• 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:
    The device (10) includes a housing (12) defining a primary chamber (26). The primary chamber (26) has a first end (28), a second end (30) and an axis (32) extending between the two ends. A movable member (34, 62) is supported in the primary chamber (26) for motion therein. The movable member has a first side disposed in the primary chamber (26) and a second side disposed outside the primary chamber (26). A first aperture mechanism (118) provides fluid communication between the primary chamber (26) and the exterior of the housing (12). A coil spring (84) biases the movable member toward the first end of the primary chamber. An indicator mechanism (86, 208) is coupled to the movable member for motion therewith to indicate the position of the movable member within the primary chamber in response to fluid pressure applied to at least one of the sides of the movable member. The indicator means is visible from a viewing face (14) of the housing. The viewing face is transverse to the primary chamber axis (32). A releasable locking means (152, 226) locks the movable member and the indicator mechanism against the biasing force of the spring (84) at a plurality of positions along the path of travel of the movable member toward the second end of the primary chamber. A release mechanism (168, 220) is provided for releasing the locking mechanism to allow the movable member to move toward the first end of the primary chamber under the biasing force of the biasing means. The release mechanism extends generally transverse to the axis of the primary chamber and is actuatable from the viewing face of the housing.
    公开号:SU991959A3
    申请号:SU802973548
    申请日:1980-08-12
    公开日:1983-01-23
    发明作者:Дж. Томас Тимоти；А. Мангусон Гарольд
    申请人:Дональдсон Компани,Инк (Фирма)；
    IPC主号:
    专利说明:

    (54) PRESSURE INDICATOR
    This invention relates to fluid pressure sensitive indicator devices that can react to negative or positive pressure, or to a differential pressure. More specifically, the invention relates to a mechanical pressure indicator with a constant locking capacity and can be used as a restrictive indicator to indicate accumulation of air in the air cleaner of the internal combustion engine. 15
    Restrictive continuous read indicators are known that show data only when vacuum is applied or can be equipped with a continuous 2G locking mechanism for locking the indicator at multiple points. A continuous locking device allows the operator to determine the condition of the air filter environment without. 25 switching on the internal combustion engine
    However, the locking indicators of continuous readout do not allow turning off the locking mechanism with the same 30
    indicator plane from which the reading is carried out.
    A pressure indicator is also known, comprising a housing in which two cavities for measuring pressure are made, a spring-loaded sensitive element kinematically connected with an arrow, a viewing plane with a scale, fixing means of positioning the sensitive element and means for returning it to its original position 2.
    The disadvantage of this pressure indicator is that the locking means for moving the sensitive element of this device are not protected from the effects of a contaminated environment. This reduces the reliability of the device.
    The purpose of the invention is to increase the reliability of the device.
    This goal is achieved by the fact that in the pressure indicator the elastic sensing element is designed as a bellows, the cavity of which is closed by a cap element with openings, and is placed in the housing so that the axis of the bellows is parallel to the viewing plane, and in the cavity of the housing between the bottom of the bellows and the end of the spring is installed a cup-shaped element with a main L-shaped lever and extension guides of the L-shaped levers, under which the guide grooves are made in the body, while the main lever has a thread, and the arrow contains IT connector (Nyi pin that engages with a slot, mainly L-shaped lever on the side surface performs a series of first ratchet teeth, and in the cavity in which the spring is placed, there is a spring-loaded sliding element with a pair of second ratchet teeth, matching first, made with an inclined section, the means for returning the sensitive element to the initial position is made in the form of a figured rod with an inclined section, which is conjugated with the inclined section of the sliding element, and the rod is installed with the possibility of Aulnay first movement and the end of the observation plane withdrawn outwardly, and is coupled to a sealed flexible envelope. Figure 1 shows the pressure indicator, front view; figure 2 is the same, rear view; in FIG. 3, the same, side view) in FIG. 4, a variant of the pressure indicator, side view; in fig. section aa in figure 4; on figb section BB in figure 1; figure 7 is a section bb In figure 6; on Fig - section GG on fig.Z; figure 9 is a section dD in figure 6; Fig. 10 is a section bb of fig 1; (an embodiment of the pressure indicator)} of fig. 11 a section ee of fig. ten; on .12 section Ж-Ж on figure 10; FIG. 13 shows section 3-3 of FIG. 10; on Fig - section And-And on figure 10. The Pressure indicator includes a housing 1 inside which two cavities are made — cavity 2 with a spring-loaded sensor element 3, made in the form of bellows, and cavity 4 with arrow 5, kinematically connected with the bellows 3, in the bellows 3 there is a hole 6. The bellows 3 is attached to the housing 1 by means of a locking ring 7, a filter element 8 and a cap 9. The filter element 8 closes the opening 6 of the bellows 3. In cavity 2, a follower element 10 is installed, made in the form of a bowl-shaped element with the main L-shaped lever 11 and an accessory GOVERNMENTAL guide levers 12-14. In the next element 10, a gap 15 is formed. The main lever 11 is slidably mounted in the guide slot of the housing 1 formed by a pair of ribs 16, and each additional lever 12-14 is slidably mounted in the guide slot between the king edges 17 and 18. Ribs 16-18 are integrally formed with the housing 1. The spiral spring 19 is installed inside the cavity 2. The transparent cover 20 is attached to the housing 1. The crumb 20 is hermetically glued to the annular edge 21. A plate 22 is inserted inside the transparent cover 20, onto which a scale is applied or calibrated graduation made on its outer surface. For mounting the device, an I K-shaped mounting bracket 23 is provided. (24). The device is installed in a hole in the wall 25. For supplying a den: a dry pressure in the tube 26 is provided with an opening 27, the constricted portion 28 of which is intended to relieve any sudden pressure change. To register a positive pressure applied to the cavity of the bellows 3, or to register a pressure difference between the cavity 2 and the cavity of the bellows 3, the cap 9 is replaced by the cap 29 .. The cap 29 has a tube 30. The connecting tube 31 is connected to a negative pressure source. The indicator arrow 5 is rigidly connected to the connecting pin 32 and the cylindrical element 33. In the cavity 2 a plug 34 is installed with a curvilinear section 35. The connecting pin 32 passes through a groove 36 made in the housing 1 and is placed in the slot 37 made in the main lever 11 of the follower element 10. In the main lever 11, a series of first ratchet teeth 38 is made, and in cavity 2 a spring-loaded sliding element 39 is fitted with a pair of second ratchet teeth 40, matches the first ratchet teeth 38, the slide element 39 shifts up x spring 41 placed in the groove 42. To return the sensing element 3 to its original position in the housing 1, a shaped rod 43 is installed with an inclined section 44 mating with the inclined section 45 of the sliding element 39. The end 46 of the rod 43 is led outside of the housing 1 and a transparent cap 20 and is connected to the sealed elastic sheath 47. The figured rod 43 passes through the groove 48 in the sliding element 39 and is placed in the groove 49. The rod 43 also passes through the openings 50 of the plug 34. The rod 43 has a square cross section at the inclined a section 44, which is aligned with a rectangular section of the groove 8 to hold the rod 43 in the centered position of rotation. An embodiment of the indicator device is shown in FIGS. 10-14. The follower element 51 comprises a first lever 52. The first lever 52 is provided with a groove 53, but does not have snoring teeth. Indicator means contain an indicator-arrow 54 and a connecting pin 55, of which YOU are fuller In one piece with each other. The plug 56 is rigidly fixed inside the housing 57. The plug 56 has a curved section 58 around which the indicator arrow 54 is rotatably mounted. The adjusting rod 59 protrudes from the inside of the housing 57 to the outside relative to the housing 54 and the transparent cap 60. The indicator arrow 59 is fixed to the mounting rod 59 in such a way that the indicator arrow 54 and the rod 59 can be rotated together. The connecting pin 55 passes through the arched groove 61 and is located in the groove 53. The linear movement of the follower 51 is transmitted in the form of a pivoting movement to the indicator arrow 54 through the connecting pin 55. The arrow 54 rotates around the axis of the rod 59. The mounting rod 59 projects outwardly relative to the cap 60 and is air-tightly attached to the cap 62. The follower element 51 is connected to the coil spring 63 .. A number of first ratchet teeth 64 protrudes from the head or element .65 and a series of matching second ratchet teeth 66 protrudes from The second disk or element 6 Disk 67 has a pair of lugs 68 that are placed inside mated in the container in the housing 57. The disk 67 is thus secured against rotational motion relative to the housing 57. The rod 59 is directed inward from the cap 60 and passes through the hole 69 in the stopper 56 and through the opening 70 in the disk 67. The disk 65 is rigidly attached to the rod 59. The disk 65 is thus rotated together with the rod 59. The cap 62 shifts the disk 65 outwards. The pressure indicator is barely working. The negative pressure source in tube 26 is formed from an air stream passing through the air filter of an internal combustion engine. As dirt accumulates in the air filter, more force is required to push air through the filter, therefore, the air flow creates a higher negative pressure in the pipe 26. This higher negative pressure moves the tracking element 10 against the bias force of the spring 19 and registers indicator arrow 5. on the other hand, one source of fluid pressure can be connected to the tube 31 for supplying negative pressure to the bellows cavity 3, and the second source of pressure can be connected A tube 26 is used to supply pressure to chamber 2. Thus, indicator means will show a pressure differential between the pressure applied to pipelines 26 and 3.1. Removable locking means containing ratchet teeth 38 and 40 lock the next element in the set positions along the trajectory of its movement from the hole 6 along the longitudinal axis of the bellows 3. Thus, the indicator arrow 5 is locked in the maximum position to which it moves after relieving pressure from one of the cavities 2 or the bellows 3. Sliding element The nt 39 is displaced upward by the spring 41 to a position in which the second ratchet teeth .40. enter into engagement with the first ratchet teeth 38. When using the sliding element 39 shifted upward, the first 38 and second 40 ratchet teeth allow the next element 10 move against the bias force of the spring 19, i.e. 7 in the right. However, the first 38 and second 40 ratchet teeth in the engaged position do not allow movement of the follower 10 under the action of the bias force of the coil spring 19. This is achieved by positioning the curved and perpendicular surfaces of the ratchet teeth 38, 40 in the direction shown in FIG. Figured rod 43 is designed to remove the second ratchet teeth 40 from engagement with the first ratchet teeth 38 so that the follower 10 can move under the action of the bias force of the coil spring 19. In FIG. the rod 43 adjacent to the inclined section 44 is in contact with a portion of the plug .32 in the extreme position of the rod 43. In this extreme position, the inclined section 44 is brought out of contact with the inclined section 45, although it remains in close proximity to it. To remove the second ratchet teeth 40 from engaging with the first ratchet teeth 38, the shaped rod 43 pushes inward against the bias force of the cap 47. The curvilinear surface of the inclined section 44 contacts the curved surface of the inclined section 45 and guides the slider 39 downwards against the bias force of the flexible rod 41. Thus, the follower element 10 can be freely moved by the biasing force of the coil spring 19.
    When the indicator device 10 is used to indicate the engine air filter pollution is internal combustion, the indicator arrow 5 will turn clockwise (Fig.) A stronger negative pressure will be fed to the main chamber 2. The maximum negative pressure in chamber 2 will be shown on a calibrated face plate 22, even when the internal combustion engine is shut off, by means of a decoupling locking mechanism. When the maximum value of the contamination is shown and the air fi / liter is to be replaced, the shaped rod 43 is clamped so that the arrow 5 can turn counterclockwise by moving the tracking element 10 under the action of the bias force of the coil spring 19. A continuous locking reading of the negative the pressure applied to the main chamber 2 may begin again. In other applications, continuous locking of the follower 10 and the indicator arrow 5 can be used to indicate the maximum pressure drop or the maximum positive pressure in the bellows cavity 3.
    In another embodiment, the disc 65 rotates with the rod 59, the cap 62 shifts the disc 65 outwardly. Thus, the first ratchet teeth 64 are displaced and brought into engagement with the second ratchet teeth 66. The snoring teeth B64 and .66 are designed to lock the tracking element 51. By pressing the rod 59 against the biasing force of the cap 62, the first teeth 64 can be removed from engagement with the second teeth 66. Such disengagement is shown in FIG. When the first 64 and second 66 ratchet teeth are disengaged, the follower 51 can move under the action of the bias:: spring force 63. This device can also be used to measure positive and negative pressure and pressure drop.
    Indicator devices have many advantages. The moving parts of the device, for example tracking elements, indicating means and locking means, are located on the sealed side of the clean air of the diaphragm, i.e. inside the main chamber and thus closed from outside contamination. The use of a long-path diaphragm with a calibrated spring ensures read accuracy. An infinite number of read ranges can be obtained by a simple one.
    replace the calibrated spring and scale on the plate. The use of constricted holes in the pressure and vacuum inlets softens the pulsating action of a pressure source or vacuum. The indicator device can be easily adapted for use as a pressure gauge, vacuum sensor or pressure differential sensor by using a cap that can be attached to the body with appropriate means, including a threaded nozzle.
    Invention Formula
    "
    The pressure indicator, comprising a housing, fe of which is made up of pressure measuring cavities — a cavity with a spring-loaded sensitive element and a cavity with an arrow kinematically connected with a spring-loaded sensitive element, and containing a viewing plane with a scale, means for fixing the cavities of the sensitive element, and means for returning its initial position, distinguished by the fact that, in order to increase the reliability of the indicator; in it the elastic sensing element is designed as a bellows. the cavity of which is closed by a cap element with holes. and placed in the housing so that the axis of the bellows is parallel to the viewing plane, and in the cavity of the housing between the bottom of the bellows and the end of the springs) A cup-shaped element with a main L-shaped lever and additional guides L-shaped levers are installed, under which guide grooves are made in the body , at the same time, a slot is made in the main lever, and the arrow contains a connecting pin, which is in engagement with the slot, the main L-shaped lever on the side surface is made of a series of first ratchet teeth, and in the cavity in which spring mounted spring loaded sliding element with a pair of second ratchet teeth mated to the first, made with an inclined section, the affinity of returning the sensitive element to its original position is made in the form of a figured rod with an inclined section coupled to the inclined section of the sliding element, and the rod is installed with the possibility of longitudinal movement, and its end is led outside the viewing plane and is connected to a sealed elastic sheath.
    Sources of information taken into account in the examination
    1..Patent SZPA 3.939.457, cl. 340-239.
    2. USSR author's certificate 691704, cl. 6 01 D 19/12, 05.01.78 (prototype).
    sixteen
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    1
    权利要求:
    Claims (1)
    [1]
    Claim
    15 a pressure indicator, comprising a housing, te of which there are cavities for measuring pressure — a cavity with a spring-loaded sensing element and a cavity with an arrow kinematically connected to the spring-loaded sensing element, and containing a viewing plane with a scale, means fixing the position of the sensitive element, and
    25 means of returning it to its original position. Characterized in that, in order to increase the reliability of the indicator; therein elastic sensitive element is a bellows cavity is closed by the cap member with holes and arranged in the housing so that the axis of the bellows is parallel to the observation plane, and in the body cavity between the bottom of the bellows and the spring tang ^ hundred Oe Credited chasheobrazshly element to the main T -shaped lever and additional guiding L-shaped levers, under which guide grooves are made in the housing, while
    40, the main lever is made a slot, and the arrow contains a connecting pin that engages with the slot, in the main L-shaped lever on the side surface a number of first
    45 ratchet teeth, and in the cavity in which the spring is placed, a spring-loaded sliding element is installed with a pair of second ratchet teeth mated with the first, made with a 50 inclined section, the means for returning the sensitive element to its original position is made in the form of a fixture rod with an inclined section coupled to the inclined section of the sliding element, and the rod is mounted with the possibility of longitudinal movement and its end is brought out of the viewing plane and connected to a sealed elastic shell.
    类似技术:
    公开号 | 公开日 | 专利标题
    SU991959A3|1983-01-23|Pressure indicator
    US4338722A|1982-07-13|Optoelectronic displacement sensor
    US4100878A|1978-07-18|Vacuum cleaner dust container filling indicator device
    US4369728A|1983-01-25|Air filter restriction indicating device
    US5253651A|1993-10-19|Ventilatory instrument for measuring peak expiratory flow
    CN100374813C|2008-03-12|Adjustable probe
    US2948151A|1960-08-09|Differential pressure gauge
    US8336386B2|2012-12-25|Air pump pressure gauge
    US8495916B2|2013-07-30|Mounting apparatus for a pressure gage
    US4095903A|1978-06-20|Measuring apparatus
    US4966035A|1990-10-30|Tire pressure gauge
    US6594915B2|2003-07-22|Caliper and caliper grip
    US4468969A|1984-09-04|Pressure indicator particularly for respirators
    GB2192990A|1988-01-27|Measuring instrument
    SE410702B|1979-10-29|SIGNAL DEVICE FOR VACUUM CLEANERS
    US3094876A|1963-06-25|Differential pressure gauge
    US4970899A|1990-11-20|Pressure gauge
    US2207747A|1940-07-16|Velocity meter
    US5136128A|1992-08-04|Hydraulically-piloted switch
    TWM565300U|2018-08-11|Pressure gauge
    US4873864A|1989-10-17|Pressure gauge with a movable interior scale
    US1276899A|1918-08-27|Pressure-gage.
    US1002877A|1911-09-12|Fluid-pressure gage.
    US3446076A|1969-05-27|Manometric gauges
    SU621903A1|1978-08-30|Pneumatic follower with negative pressure shift
    同族专利:
    公开号 | 公开日
    SE8005604L|1980-08-07|
    DE2953412C2|1988-06-09|
    JPS6433636U|1989-03-02|
    US4184376A|1980-01-22|
    GB2051368A|1981-01-14|
    SE435763B|1984-10-15|
    WO1980001318A1|1980-06-26|
    DE2953412T1|1980-12-18|
    AU515221B2|1981-03-19|
    GB2051368B|1983-09-01|
    AU5067679A|1980-06-19|
    ZA794603B|1980-08-27|
    BR7908951A|1981-06-30|
    JPS55500999A|1980-11-20|
    CA1122028A|1982-04-20|
    FR2444269A1|1980-07-11|
    FR2444269B1|1984-10-12|
    JPH02671Y2|1990-01-09|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US2188177A|1937-02-23|1940-01-23|Fulton Sylphon Co|Pressure indicating device|
    US3068831A|1960-03-18|1962-12-18|Coopers Mech Joints|Pressure operated visual warning devices|
    US3258960A|1963-06-13|1966-07-05|Donaldson Co Inc|Restriction indicator for air cleaners|
    US3443365A|1967-12-06|1969-05-13|Donaldson Co Inc|Restriction indicator|
    FR2162753A5|1971-11-30|1973-07-20|Mirsky Alexander|
    GB1407125A|1973-02-22|1975-09-24|Gen Motors Ltd|Pressure responsive visual warning devices|
    FR2246856B1|1973-10-03|1978-03-17|Sofiltra Ste Indle Filtration|
    US3939457A|1974-11-07|1976-02-17|Richard Donald Nelson|Air filter restriction indicating device|
    FR2298097B3|1975-01-17|1977-10-14|Lautrette & Cie Sa|
    US4020783A|1975-06-19|1977-05-03|Donaldson Company, Inc.|Air cleaner with restriction indicator|
    US4014209A|1975-12-15|1977-03-29|Emerick Wayne L|Air filter condition indicating device|
    FR2338395B2|1976-01-19|1979-07-06|Poelman Sofiltra|
    US4033733A|1976-02-23|1977-07-05|Joseph N. Nelson|Air filter gauge|
    US4031847A|1976-04-21|1977-06-28|Donaldson Company, Inc.|Pressure ratio reversal indicator|
    DE2617972A1|1976-04-24|1977-11-10|Mann & Hummel Filter|Filter clogging indicator esp. for automobiles - has guided piston and crank lever to actuate indicator slide|AU586628B2|1984-04-10|1989-07-20|Robinhood Industries Pty. Limited|Filter clean indicator|
    GB2219044B|1988-05-24|1992-07-29|John Wang|Pressure actuated assembly extendable by fluid pressure and retractable by spring action|
    DE69330954D1|1993-12-13|2001-11-22|Unilever Plc|Stable oil-in-water emulsions and process for their preparation|
    WO1997006363A1|1995-08-04|1997-02-20|Donaldson, Company, Inc.|Restriction indicator for air cleaners|
    US5882379A|1997-09-26|1999-03-16|Donaldson Company, Inc.|Indicator arrangement for air cleaner systems and methods thereof|
    US6604486B1|1999-08-16|2003-08-12|Donaldson Company, Inc.|Restriction indicator|
    US6190442B1|1999-08-31|2001-02-20|Tishken Products Co.|Air filter gauge|
    US20030056711A1|2001-09-26|2003-03-27|Tranter Brian R.|Pressure indication device|
    US7137303B2|2004-08-31|2006-11-21|Stanadyne Corporation|Filter change indicator|
    RU199728U1|2019-12-13|2020-09-16|Федеральное государственное унитарное предприятие "Всероссийский научно-исследовательский институт автоматики им. Н.Л. Духова" |Differential pressure indicator|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    US05/969,256|US4184376A|1978-12-13|1978-12-13|Pressure sensitive indicating device|
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