• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    For injecting substances into a liquid e.g. molten metal, a nozzle block (21) is mounted in the wall of a vessel (13) containing the liquid. Initially, an injection passage (11) extending through the block is closed by a plug (22) to prevent ingress of liquid, and only when injection is to commence, is the plug (22) thrust aside by a delivery pipe (24) movable in the passage (11), the pipe (24) forming part of an injection lance assembly. The positions of the lance assembly before and after injection are determined by a safety stop arrangement for example comprising a detent in the form of a spring-loaded plunger (60) housed in a fixed part (32) of the apparatus; the plunger coacts with front and rear ramps (65, 66) of an abutment (64) which is fast with part (25) of the lance assembly, to govern the positions of the lance assembly before and after injection.
    公开号:SU1697592A3
    申请号:SU884355442
    申请日:1988-02-24
    公开日:1991-12-07
    发明作者:Вильям Бейтс Кеннет
    申请人:Инджектол Лимитед (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to devices for blowing molten metal with gas, powder and solid reagents.
    The purpose of the invention is to increase reliability.
    FIG. 1 shows the device, a general view; in fig. 2 - the same, partial end view; in fig. 3 shows section A-A in FIG. 2; in fig. 4 is a view B in FIG. 2; in fig. 5 is a tuyere head attached to a feed pipe installed in the device of FIG. one; in fig. 6 is a vertical projection of the tuyere head shown in FIG. five; in fig. 7 - the same, view from the right end of the head; in fig. 8 - device option; in fig. 9 - 11 - tuyere head, attached to the feed pipe installed in the device according to FIG.
    8, and also shown are safety stops and their action during operation,
    Device 1 and 8 are equipped to provide flexibility in the operation of several injection channels 2. Using this device, various substances and substances of various physical types can be introduced simultaneously or in any chosen sequence into a high-temperature fluid, such as molten metal. A device may have four or more or less than four channels, for example, eight and fifteen channels.
    Device 1 can be used to inject substances, such as reagents. in any liquid, potentially dangerous, for example, due to elevated temperature.
    ABOUT
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    But it is mainly used in metallurgical processes, and more specifically in ferrous metallurgy processes, where the liquid is a molten metal or alloy. The melt temperature can be up to 1600 ° C or higher and depending on the metal,
    The device 1 is installed in the bottom or in the side wall 3 of the vessel 4, for example a bucket. Wall 3 contains a metal body 5 and an insulating inner lining 6. Device 1 is positioned to allow substances to be introduced deep into the melt that is in vessel 4, for example, at a level blu more deep than the melt surface. Wall 3 is provided with a suitably positioned opening 7 with which the device 1 is aligned. The surrounding transition hole 7 of the annular transition disk 8 with which the device 1 is attached to the vessel is welded to the body 5.
    To ensure proper positioning of the refractory block 9 in the hole 7 to the adapter disk 8, an annular mounting disk 10 is attached by means of bolts. The block 9 is attached in the hole to the Lining 6 with cement. The refractory block is permeated by several inspection channels 2, forming a multi-jet joint. There are four channels. Prior to the introduction, the channels 2 are closed at the inner, melt-facing end by means of sealing elements, the blocking elements 11 are dilated channels, but they can be attached with cement to the end surface of block 9 across their channels. The sealing lugs 11 11 are made with refractory material and are fitted to the block so that the mx can be ejected from the channels 2 t-. crush them when needed on. -, be the introduction of substances. If the episodes are attached with a cementing agent across the outlet end of the channels, then either a cementing agent is selected that gives an adherent bond that allows the elements to be torn off, or the elements are made of a brittle material,
    Each channel 2 is connected with a lance. Each lance contains a feed pipe 12 and an inlet head GZ. The feed pipes are installed in the channels 2 with the possibility of moving in the longitudinal direction, and the inlet heads are located outside the block 9. Means 14 are provided for forcing the lance to move towards the inner space of the vessel in order to remove or destroy the blocking tubes by means of pipes 12
    elements 11 to start the introduction. Said means 14 can be actuated pneumatically or hydraulically, Pipes 12 are made of metal, for example stainless or aluminized steel, or made of metal and refractory material.
    As shown in FIG. 1, the lid 15 is detachably attached to the mounting disk 10 so that its holes coincide with the corresponding holes of the injection channels 2. The lid 15 is clamped; the mounting unit 9 is in its place in the hole 7. On the lid 15 there are installed pins 16 and a central nut 17. The said pins enter with correspondingly arranged receiving openings in the mounting plate 18, which is attached to the cover by means of a bolt 19 screwed into the nut 17, For a four / channel design (Fig. 2) the mounting plate has figured shape with four protrusions and provided with four holes 20 located relative to the projections, as shown in Fig. 2. The holes 20 of the fixed mounting plate 18 are suitably aligned with the channels 2 and the corresponding holes in the cover; diameter. In combination with the cover, the holes 20 in the mounting plate form sockets into which the inlet heads 13 are inserted with a sliding contact,
    A feature of the present invention is the design of the parts used to ensure proper tuyere control before and during insertion and after stopping the insertion.
    To the mounting plate 18 at the end of each of its protrusions attach, -; en supporting element 21 having an opening for the axis 22. By means of this axis, the tuyere advancement means 14 and the tuyere clips 23, which are installed instead of each other, are hinged to the mounting plate 18. The tuyere clips 23 are shown in FIG. 4. Their purpose is to clamp the tuyeres for safety in the proper positions until v- after the substances are injected. If it is necessary to carry out an insertion cycle, the clamps 23 are disconnected from the element 21 to o-them by means of continuation means 14. The device 1 can have two tuyeres 23 two advance means 14, whereby the device can be prepared for the introduction of substances through two channels 7. simultaneously or s of a quick succession. If required, it is necessary to have three clips 23 and one advance means 4,
    However, the clips 23 can be omitted. In this case, four advancement means 14 containing hydraulic ram cylinders can be used instead of clamps to securely clamp all tuyeres in their proper positions before and after insertion.
    As shown in FIG. 2 and 4, each clamp 23 comprises a rigid clamp member 24 having two levers 25. resting on the tuyere inlet head and holding it in the desired position. A manually adjustable stop screw 26 is screwed into the clamp 23, abutting against the support element 21. By means of the screw 26, it is possible to rotate the clamping element 24 on the axis 22 and thereby change the position of the levers supported on the inlet head 13, resulting in a clip 23 can be brought to the holding position of the tuyere in the selected position. The selected position prior to insertion is determined by the stopper. After insertion, the position may correspond to the position of the tuyere, when its inlet head rests on the bottom of the seat formed by the hole 20 in the mounting plate 18.
    The advancement means 14 also has a rigid part, namely an actuating (driving) element 27 having two spaced arms 28 extending from it, resting on the tuyere inlet head 13. A hydraulic actuator housing is attached to the element 27, i.e. a power cylinder 29, the plunger of which can be extended before contact with the anvil 30 on the supporting member 21. When actuating the cylinder, the plunger, abutting against the anvil 30, causes the cylinder body to move away from it. Consequently, the drive element 27 is forced to rotate around the axis 22, moving the levers 28 towards the vessel wall. If the power cylinder 29 is suitably actuated, the levers 28 of the advancement means 14 can hold the lance in position prior to insertion, advance the lance to release the channel from the closure means 11 before starting the insertion and hold the lance in position after insertion.
    Each of the intake heads 13 is made of two parts. Of these two parts, the outer part can be offset relative to the other part for a quick end to the introduction. To effect the displacement, on the same drive element 27 of the advancement means 14, a second hydraulic cylinder 31 is mounted so that its plunger can abut against an abutment 32 attached to the outside of the tuyere head.
    Some benefits come from the formation of a composite (single) structure from a drive element 27 and two power cylinders 23. 30 and the creation of a single
    the fasteners (axles 22) to the mounting plate 18 After insertion, the feed pipes and the nozzle block 9 usually need to be replaced. The ease of assembly and disassembly of a single structure simplifies such conventional maintenance, due to the fact that disassembly is minimized. In addition, it is easy to remove a single structure from one insertion point in the device and quickly install it at another insertion point, replacing
    5 she is a simple tuyere clip. This avoids the need to have your own permanent drive design for each injection point, which reduces costs and simplifies the overall assembly.
    0 Inlet head 13 is shown more
    The detail in FIG. 5, where it can be seen that its inner and outer portions 33, 34 are mated along the joint plane and fastened to each other by a combination of 35 of a rigid rod and a spring. Each part has a through channel 36 and 37, and before and during the introduction of the substance these channels are aligned with each other. In the combined channels transport injected substances
    0 ie gas. gas and POWDER or wire, from supply pipe 38 to supply pipe 12. When it is necessary to finish the insertion, the plunger of the hydraulic ring 313 is brought into contact with the abutment 32 attached with the disconnection power (for the purpose which does not need to be explained here ) to the outer part 34. When casting (ililtsilmndra 31 into action, the stop 32 moves and together with it the outer part 34 of the head moves. This
    The 0 portion is rotated relative to the inner portion 33 on the stem, which serves as an axis. Part 33 cannot be rotated because it is seated in the socket formed by the hole 20.
    5 in the mounting plate 18. With the relative rotation of part 34, channel 37 leaves the position of alignment with channel 36 and, therefore, blocks the path from the power source by the substance (s) injected to
    0 feed pipe 12. When the tuyere is used to transport the injected substance in the form of a wire strand, parts 33 and 34 contain cutting sleeves acting in the joint plane, cutting the straps at
    5 actuating the hydraulic cylinders 31. The stopper is a latch acting between the tuyere or each tuyere and some suitable fixed part of the device 1. For each tuyere, the latch in its simplest form contains a spring-loaded pin and an emphasis, one of which is attached to tuyere, in the other - to the fixed part of the device. As shown, the spring-loaded pin 39 is installed in the socket.40, which is formed jointly by the mounting plate 18 and the supporting element 21 (the fixed part of the device). The nest 40 is located near the corresponding hole 20 in the installation IDMT 18 and connected to it by means of drilled holes. Through this drilled hole go through the rod 41 of the pin ZE, Located spring i, nest 40 spring, act on the enlarged head of the pin 33, withdraws the rod 41 from the hole 20, Tip
    rod 41 interacts with. focus, npw-upe-gshennym to the tuyere head 13, and more specifically to the inner part 32
    head, when the tuyere head is installed in the hole 20, the Stop 42 has an inclined front -l back surface (or
    slopes) 43 and 44, which can enter 1 and contact with pin 39. Pin 39 and front slope 43 form a stopper that determines the position of the tuyeres; prior to the introduction. In this position, the delivery pipe 12 is located at some distance from the channel blocking element 11. By properly designing and selecting the spring, it is possible to make the moving tuyeres forward past the stopper by hand, for example, a force of about 1/2 ton (500 kg) can be used to move the stoppers with tuyeres, i.e. to advance (and incline 4Я by the latch pin, C. ate the tool, causing the uncoupling or blocking device to prevent the blocking element 11 s from breaking.
    The advancement means 14 is fully capable of expanding the force required to move the furoy and overcome the effects of: said stopper. With such a mixed incline, the slope 43 biases the pin 39 inward relative to the socket 40, overcoming the spring action, and reaches the point DG.-D the tip of the pin is on the 45 EXTUP surface on the stop 42, With the further movement of the tuyere using the advance tool 14 there is an opportunity to start the insertion. Finally, the lance comes to a fully advanced position, in which the pin 39 and the back surface 44, interacting with each other, form a second stopper and prevent uchnom OTIS od tuyeres of administration veschest- position: and. The second stopper interferes with
    reverse ejection of the tuyere under the influence of melt pressure,
    After all the air conditioning has been completed, the feed pipes 12 are tightly welded in the forward position to their channels 2 by metal, solidified gaps between the feed pipes and the channels.
    When the tuyere heads 13 are in the forward position, the rear oblique
    0, the surfaces 44 are located on the front side of the pins 39. In this case, the mounting plate 18 can be removed, unscrewing the bolt 19 unhindered, and the tuyere heads 13 can be removed from the feed pipes 12 13. With suitable tools attached to the feed pipes 12, you can remove pipe and refractory nozzle unit 3 for replacement.
    A definite advantage of the sludge / retractable latch is its ability to help cleanly remove the closure element 11 from the end of the injection channel 2. As the tuyere advances to remove the closure element 11, a moment comes when the rear slope 44 approaches the pin 30. At. the pin comes into contact with the rear bias 44 and the spring acting on the pin 39 abruptly pushes the stop 42 forward and with it
    0 lance, and a sharp advance, g, s-. called the cam action of the podrukhinenny pin nz rear bias 44, leads to the fact that the supply pipe sharply pushes the sealing element 11,
    5 Kack is described; it is possible to have only one - a latch acting between the tuyere i / shea and each tuyere and fixed part of the device. However, it is preferable to use two together
    0 active latches. Therefore, two diametrically opposed stops 42 are installed in each tuyere, and therefore two spring-loaded pins 39 are installed in the mounting plate 18.
    5The support can be made part of the fixed mounting plate, and the spring-loaded pins can be attached to the lance or embedded into it.
    In device 1 (Fig. 8) to the installation
    0 disk 10 is attached with the possibility of disconnecting the circular mounting disk 15 so that the holes in the mounting disk are aligned with the injection. Opal 2, Disk 15 also clamps the nozzle block 9 in its place
    5 and the hole 7, the central nut or sleeve 46, provided with an internal thread, is mounted on the disk 15 and the installation plate 1B is attached to this disk, so that its annular part 47 is t-eslescopically connected to the socket 46. The Uston plate has a figured a profile with a plurality of protrusions, the number of which is equal to the number of channels 2 and tuyeres, and the protrusions are suitably aligned with channels 2 and holes in the disk 15. Cutouts 48 (not indicated) s the periphery of the mounting plate 18 form sockets into which with the possibility of sliding movement inlet heads 13.
    A cover 49, consisting of a circular disk 50 and a bowl 51, is attached to the device 1 by means of a nut 52 screwed onto a central threaded rod BZ, which is screwed into the sleeve 46. The rod 53 has an expanded part, which is pinched in contact with the mounting plate 18 and presses it to the mounting disk when the rod is screwed into the sleeve 46.
    A feature of the invention is to use c. the design of the parts intended to ensure proper control over the positioning of the tuyere before and during insertion and after stopping the collapse.
    To hold the tuyeres, each mz is provided with a stop element interacting with fixed stops on the fixed parts of the device 1. The stop element on the tuyeres is a shear pin54 protruding from the furry head 13, in which it is fixed. The shear pin enters into the groove 55 in the mounting plate 18. The pin extends rgdp inwardly towards the central mounting means 46, 52 and 53, with the groove 55 open radially outward to ensure that the pin enters into it. The groove 55 ends with the stop surface 56. The shear pin 54 and the stop surface 56 on the fixed mounting plate 18 prevent the lance from moving prematurely towards the inner cavity of the vessel 4 and the blocking element (not shown. They provide the location of the outlet tuyere pipe) In order to move the tuyere forward in order to destroy or remove the channel that closes the corresponding channel of the medium / - va. f / rm, it must be pushed forward with an effort to sufficient to cut shear pin 54. This force is much and more than the force that can be practically applied to the tuyere by hand.The force is applied by means of a pnavma to a - or hydraapic receiver (not shown) that acts 57, installed between the tuyere head 13 and the pipeline,
    leading to the source of the injected substance. The drive may be similar or equivalent to advancement means 21 and 29.
    The shear pin 54 may also interact with the inner surface of the cover 50 to prevent the tuyere installed in the device 1 from being pulled out before the introduction.
    The tuyere (FIG. 1) is in a position prior to insertion, while the shear pin 54 is in a groove 55 in contact with a stop surface 56 defining the desired position of the tuyere.
    The mounting plate 18 additionally contains a second chuck 58. Located closer to the mounting disk 15 than the groove 55, the groove 53 is also radially open on the outside, and at its far end from the disk 15, the pee ends with a second thrust surface 59. The thrust surface 59 interacts with a stop made in or attached to the tuyere head 13 prevents the tuyere from being pulled or ejected after insertion.
    The tuyere head 13 has a particularly simple structure. It consists of two parts. The first 60 is a cylindrical metal rod, which is drilled with a hearth; an axial axle 61 for transporting the injected spring from the supply line to the ayu-a.t- pipe and 12 kb opposite ends of the 60 gelg:: 1. : from pazzeikoan and in zenks- Vomnikh; naughty ": Ё2. 53;: resena thread for plc. / Eii with its own supply pipe and pipe and feed pipe 12 to part 60; A shear pin is fixed in the radial hole in the head part 60; which may be a small rod of brass rod.
    . In part 60 of the holoek, a transverse hole 64 is also drilled; Om 66. To v, and, the time of the introduction of the part 60, 65 knobs olo.zhen. Since the channels 61 and 66 are aligned with each other to enable the flow of the injected substance e to the feed pipe. In this position, one end of the 57 h fly & 5 protrudes in the radial pressure from part 60, and the opposite end does not protrude.
    Incidentally, after the start of insertion, the protruding end 57 may be reciprocating with a lid. 50, hold the tuyere in usgsoyslss 1, -5 in a far-off manner in the event of the destruction of a hydraulic or pneumatic drive acting on a pusher
    57, the pressure of the melt will be able to push the lance in the direction of the ng-spout only for a short distance, until the lid 30 of the head 65 is prevented by the displacement of the fuma.
    The introduction of the substances is stopped by displacing the hour and 65 and opening 64 of the first head part 60 so that the canal is completely out of position with channel 31. To displace part 65, the hydraulic or pneumatic power cylinder 69 installed on the crank nt.-, O /: Ogyu zhty.y-cr
    69 has a pusher 70. races-position -sa of one line with the end of 37 parts of the smut when the lance is located and the ns are in a thinning position i.e. in position chve / zeny Toik-atel
    70 has access to the data; 1/6 -: Through the groove 71 s glass (skirt) J1 krch K. The cylinder 89 moves part 65 of the bearers: / as a result of which its end 68 pours out radially from part 60 of the bare arm.
    After shutting off the flow of the injected gaseous substances by means of cyclin.pra 39, the melt enters the delivery pipe for 12 hours and clogs it there, plugging Tpy6v. The pressure of the melt can force pegsmesh n outward. This practice reliably cuts / protrudes the protruding end of the SB part 85 of the head, which is included in the xn-tact with the thrust plate over the guest 59 on the fixed mounting plate 18.
    The tuyere shown above the center line in FIG. In the, is the position of the introduction of the center or in the position of readiness, with the tuyere head is shown (and increased with: - scale) in FIG. 9. Actuation with the pin 54 and the thrust surface 56 to install them in the desired position; 13 / i, therefore, fur.1. can be easily understood from FIG. 9.
    To start the insertion, the foot / l / with force is pushed to the left in the direction / m to the internal cavity of the vessel, while the stop 56 extends the mortise pin 51 l of the furm uncorks the channel 2. Figure 10 shows the position of the tuyere head relative to the other stops 56, 59 thereafter, to & the tuyere lance is advanced into the insertion position.
    On f lg. 1, the tuyere head is shown still in an advanced position after part 65 of the button (j is shifted to the end of the insertion, E} n "/ nod or EYT tuyere diamiamia and direction, T.R, it is g-evolutive, npens.c / Hvev
    the stop 59, into which the protrusion of the protruding end 68 of the head part 65 is raised.
    8 multi-channel injection device several tuyeres set in
    when the cover 49 is removed from the device 1, is limited to the movement of the tuyeres by means of locking means 54 and 56, which hold them in position before insertion. Then set
    0 in place of the cover 49,
    The lid 49 can be made so that at this moment it can also be moved forward and use it to introduce only one tuyere. For this purpose, drive 50
    5 has a single hole 73, giving access to the selected tuyere. A push-pull element 57 is inserted through this opening 73, up to an adapter, into the tuyere head 13 and engaged with this element 57.
    0 drive to advance the tuyere when required. The actuator 69 is fixed at a specific place on the lid 49 corresponding to the selected tuyere. After the substance is introduced through this lance, element 57 is detached from lance y, the nut 52 is loosened to the extent sufficient to allow the lid 49 to rotate. When it is necessary to loosen the lid 49, the actuators can be disengaged with the lance or removed. After that, the cover 49 is turned to those lane. until its opening 73 is aligned with the selected unused tuyere, after which the lid is clamped in this
    5 by means of a nut 52. Then, the element 57 is set in a suitable manner to engage an actuator (not shown) with it to advance the tuyere.
    After using all the tuyeres cover
    About 39 remove and unscrew the threaded rod 53 provided with an external thread from the sleeve 46, with an internal thread. Then you can remove the installation plate 18 and the head opening of the used tuyeres for repeated use.
    After disconnecting the mounting disk 15, the nozzle 5: 9 can be removed from the hole 7, for example, for replacement, if, as often happens, tuyere pipes turn out to be welded (adhered) with block 9, the latter can be removed by “drawing out .m.h. At the same time, its tuyere pipes will be equipped with a syringe from block 9, left in its hole 7. 7.
    5 remove with a suitable tool, g.:; a task of attachment, which is attached to a threaded anchor 74. flooded or opened into a block,
    8 most of the nozzles with more than one nozzle will be | f | x; n and replaced with all
    once all tuyeres have been used, so that neither the block nor the tuyere pipes will be reused.
    Thus, the present invention can be used in ferrous metallurgy to introduce gaseous, solid or granular (consisting of particles) substances into molten steel or cast iron for various purposes. Alloying elements can be added, in particular, easily evaporating elements, such as aluminum, and potentially dangerous evaporating elements, such as lead, as well as substances used to reduce the grain size or to control the formation of carbides. In addition, the invention can be used for the introduction of substances used, for example, for desulfurization, desiliconization or dephosphorization of a melt.
    权利要求:
    Claims (9)
    [1]
    1. A device for purging a molten metal gas and / or powdered and / or solid reagents, containing a refractory block with channels for injecting reagents made therein, a lance, the tuyere tube of which is placed in the channel with the ability to move in it, the plug for closing the channel , means for moving the tuyere tube through the channel, mounting elements with holes for placing the inlet head of the tuyere, mounted on the mounting plate, will accept means for moving the tuyere pipes in the channel hinged on the installation the bores and elements are driven, and the inlet head of the tuyere is made in the form of two plugs with coaxial holes with the formation of a through channel for feeding the material into the tuyere tube, with one of the sleeves hinged to the other to be displaced relative to combining with an actuator, characterized in that, in order to increase reliability, the mounting elements are made in the form of a single ustnsssschnoy plate, the device is equipped with a lance fixation mechanism, placed tuyere fur and the mounting plate.
    [2]
    2. The device according to claim 1, that is, that the mechanism for fixing the tuyere is made in the form of a spring-loaded element placed on the mounting plate and an emphasis placed on the tuyere with the formation of a latch.
    [3]
    3. The device according to claim 1, characterized in that the abutment is made with two inclined surfaces forming the stoppers during their interaction with the spring-loaded element.
    [4]
    4. The device according to claim 1, characterized by the fact that the hole in the mounting plate
    made in the form of a socket for accommodating the intake head and a spring-loaded element is placed in the wall of the socket with the possibility of interaction with the stop,
    [5]
    5. Device pop. 1, which differs from 0 to the fact that the means for moving the tuyere tube in the channel are made in the form of a double-arm lever mounted on a mounting plate that can be supported on the inlet head;
    5 is made with a stop, the drive is made in the form of a power cylinder mounted on a lever mounted with the support on the stop of the mounting plate and connected to the inlet head of the tuyere, with the lever mounted so that it can be detached from the mounting plate ..
    [6]
    6. The device is pop, 1, characterized in that it is equipped with a lid, made in the form of a circular disc and glass,
    5 mounted on the mounting shaped plate, a movable plate with a hole and a shear pin placed on the inlet head of the tuyere, and a plate placed on the figured plate, forming
    0 two stoppers, power cylinder, placed on the glass of the lid with the possibility of interaction with the plate, placed; on the figured plate.
    [7]
    7. Resistance according to claim 1, of which it is e-5 so that the movable plate placed on the inlet head of the tuyere is installed with the possibility of blocking the tuyere, cocoa in the hole made in the walls of the sleeve of the inlet head, axis
    0 which is perpendicular to the axis of the tuyere channel.
    [8]
    8. The device according to claim 1, characterized by the fact that the movable plate on the inlet head is installed with the possibility
    5 interaction with the plate fixed on the figured plate when the channel is blocked.
    [9]
    9. Turf for melt purging gas and / or powder and / or solid
    0 with reagents, containing a tuyere tube, a tuyere inlet head, mounted on one end of the tuyere tube and made at the hub of the sleeve, forming a single tuyere channel, characterized by
    On the 5th, with a chain of increased reliability, it is equipped with a movable plate installed with the possibility of blocking the tuyere channel; a hole is made in the walls of the bushing of the inlet head, the axis of which is perpendicular to the tuyere axis;
    In this case, we performed in the sliding plate, and the movable plate is placed in the hole with the formation of a fur- nium through hole in the sleeve.
    channel, and the lower end of the movable plate. Priority points
    when the channel is blocked, the slap is-25.06.86 in PP, 1-4, 6-9
    forging surface of the inlet head of fu-510.10.86 according to claim 5
    29
    FIG. 2
    22
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    sr / s with 8L
    269iG9l
    60
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    Phie. Yu
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    同族专利:
    公开号 | 公开日
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    IN166881B|1990-08-04|
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    HUT51340A|1990-04-28|
    CN1010106B|1990-10-24|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    GB868615481A|GB8615481D0|1986-06-25|1986-06-25|Injecting substances into liquids|
    GB868624322A|GB8624322D0|1986-06-25|1986-10-10|Injecting substances into liquids|
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