• 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 invention relates to a self-cleaning nozzle. Self-cleaning nozzle for spraying a fluid with a nozzle housing (1) and arranged therein, a multi-part nozzle head, which includes a flow channel (4) with an outlet opening (5) for the fluid. In this case, the production cost is to be reduced by the fact that the nozzle head has at least one fixed (2) and at least one displaceable (3) mounted head element, each forming a portion of the outlet opening (5), wherein the displaceable head element (3) during normal operation of Fluid pressure against a lying in the flow direction (6) of the fluid stop (7) and during the self-cleaning at a reduced fluid pressure by a spring (8) against the flow direction (6) is pressed.
    公开号:AT14487U1
    申请号:TGM9009/2012U
    申请日:2012-07-13
    公开日:2015-12-15
    发明作者:
    申请人:Voith Patent Gmbh；
    IPC主号:
    专利说明:

    description
    SELF-CLEANING NOZZLE
    The invention relates to a self-cleaning nozzle for spraying a fluid with a nozzle housing and arranged therein, a multi-part nozzle head, which includes a flow channel with an outlet opening for the fluid.
    It has long been known to design nozzles so that a self-cleaning process can be brought about by reducing the fluid pressure. For this purpose, the nozzle head is slidably mounted in the nozzle housing and pressed by the fluid pressure against the force of a spring in the working position relative to a spray head. When the fluid pressure is reduced, the spring presses the nozzle head counter to the flow direction away from the spray head, which leads to an enlargement of the outlet opening and to the removal of foreign substances from this area.
    Since this usually does not meet the requirements, it is proposed in DE 691 11 555 T2 to perform the nozzle head in two parts and to ensure that during self-cleaning, the two nozzle halves are withdrawn, thereby unfolding. This is very effective but also prone to failure.
    The object of the invention is therefore to develop a self-cleaning nozzle, which is as reliable as possible and associated with the lowest possible manufacturing cost.
    According to the invention this object is achieved in that the nozzle head has at least one fixed and at least one displaceably mounted head element, each forming a portion of the outlet opening, wherein the displaceable head element during normal operation of the fluid pressure against a lying in the flow direction of the fluid stop and during self-cleaning at reduced fluid pressure by a spring against the flow direction is pressed.
    Characterized in that not all elements of the nozzle head are displaced, simplifies the structure significantly. In addition, so the susceptibility can be significantly reduced.
    By pushing back the displaceable head element during self-cleaning, i. At reduced fluid pressure, the outlet opening increases, since the displaceable head element forms a portion of the outlet opening. The size and shape of this section but also the shape of the flow channel affect the extent of the enlargement and thus the quality of self-cleaning significantly.
    In order to ensure a defined position of the displaceable head element even when self-cleaning, the displaceable head element should be pressed during the self-cleaning of the spring against a counter to the flow direction stop.
    For a high fluid pressure at the outlet from the nozzle, it is beneficial if the cross section of the flow channel in the nozzle head to the outlet opening at least partially reduced, preferably continuously reduced. This reduction in the direction of the outlet simultaneously increases the degree of enlargement of the outlet opening when pushing back the head element during self-cleaning.
    The production is simplified here, if the cross section of the flow channel in the nozzle head is round, in particular oval or circular. For the same reason, the fixed head should be attached to the nozzle housing, preferably formed integrally with this.
    Furthermore, the construction can be further simplified in that the stops are formed by the nozzle housing and / or the spring is housed in a recess of the nozzle housing and / or the displaceable head element.
    In order to ensure the displaceability of the head element and at the same time to form a guide, a parting plane between the two head elements should be parallel or inclined to the flow direction.
    For most applications, it is sufficient if the nozzle head is formed in two parts. In particular, in this case, the dividing plane should run between the two header elements for simplicity through the middle of the flow channel, so that the displaceable head element has a sufficient size for influencing the outlet opening during self-cleaning.
    If necessary, however, more than two head elements can be provided without problems and accordingly also a plurality of head elements can be arranged displaceably or fixedly.
    In addition, the nozzle can be further improved by the fact that the fixed head element protrudes with a beam guide over the outlet opening and changes the emerging from the outlet fluid jet with respect to beam direction and / or beam shape. This can be used in particular for a laterally inclined radiation of the fluid jet.
    However, if special jet shapes are to be formed, then the outlet opening of the nozzle head should open into a preferably releasably attachable to the nozzle housing spray head.
    In this case, the spray head have only one or more channels, which distribute the fluid on several sides, preferably on all sides.
    In the interest of cost-effective production and sealing against the nozzle housing, it is advantageous if at least the displaceable head element and / or the spray head made of plastic.
    The invention will be explained in more detail in several embodiments.
    In the attached drawing: FIG. 1 shows a schematic longitudinal section through a nozzle in the operating position; FIG. 2: a cross-section according to FIG. 1; and [0023] FIG. 3: a longitudinal section through another nozzle during self-cleaning.
    The nozzle is due to its high reliability and the high degree of self-cleaning especially for spraying process water of the same but also changing qualities, especially in proportions of pulps, as they are needed for the production of fibrous webs.
    As can be seen from the figures, the nozzle is essentially formed by a nozzle housing 1, which receives the two-part nozzle head.
    The nozzle head itself forms the flow channel 4, which promotes the fluid to the outlet opening 5. In this case, the flow channel 4 has a circular cross section, which gradually decreases in a section to the outlet opening 5 out. This conical narrowing of the flow channel 4 increases the pressure of the fluid at the exit from the outlet opening 5.
    The two parts of the nozzle head are formed by a fixed 2 and a parallel to the flow direction 6 of the fluid slidably mounted 3 head element. In this case, the dividing plane 11 runs between the two head elements 2, 3 essentially through the middle of the flow channel 4 parallel to the flow direction 6. Thus, both head elements 2, 3 form an approximately equal section of the outlet opening 5.
    To simplify the construction, the fixed head element 2 and the nozzle housing 1 is made in one piece.
    In normal operation according to Figure 1 and 2, the force acting on the displaceable head element 3 fluid pressure causes a pressing of this head element 3 against the force of a spring 8 against a lying in the flow direction 6 stop 7 of the nozzle housing 1. To this end to generate a sufficient force, For example, the attack surface of the displaceable head element 3 facing the flow direction 6 and exposed to the fluid pressure should be dimensioned sufficiently large. In addition, the displaceable head element 3 is sealed relative to the nozzle housing 1, so that the fluid can generate a corresponding force. For this purpose, the displaceable head element 3 at the outlet opening 5 opposite end has a circular, perpendicular to the flow direction 6 and parallel to the flow direction 6 slidably mounted in the nozzle housing 1 stabilizing ring 16. This stabilizing ring 16 forms the beginning of the flow channel 4 and has to seal against the nozzle housing. 1 a sealing bead 14, which projects into a recess 15 of the nozzle housing 1.
    The recess 15 allows the sliding of the sealing bead 14 between normal operation and self-cleaning and at the same time forms the counter to the flow direction 6 lying stop 9 for the mobile head element 3 during self-cleaning.
    For the self-cleaning of the outlet opening 5, the fluid pressure is reduced to the extent that the spring 8, the displaceable head element 3, as shown in Figure 3, against the flow direction 6 against the stop 9 in the recess 15 of the nozzle housing 1 suppressed. This displacement also causes, in conjunction with the conical shape of the flow channel 4, a considerable enlargement of the outlet opening 5, so that foreign substances are rinsed out of this area.
    The spring 8 is in this case in a recess 10 of the displaceable head element 3, wherein the counter to the flow direction 6 facing end of the spring 8 in the recess 10 of the head element 3 and the opposite end of the nozzle housing 1 is supported.
    As Figure 3 shows, the fixed head element 2 may protrude with a beam guide 12 through the outlet opening 5. In this case, this beam guide 12 is intended to deflect the fluid jet emerging from the outlet opening 5 and / or to change its shape.
    As a result, different beam shapes, such as flat fan, fan beam, etc. can be generated and deflected inclined rays to the flow direction 6.
    In order to expand the possibilities of beam design is in the solution shown in Figure 1 on the nozzle housing 1 each releasably attached to a spray head 13, in which the outlet opening 5 of the nozzle head opens. The releasable attachment can be done for example via screw or a clip closure and thus allows easy replacement of a spray head 13 in case of wear or changing requirements on the shape of the fluid jet.
    In this case, the spray head 13 according to Figure 1, the fluid also multi-sided, in particular distribute on all sides.
    To minimize the production costs, the displaceable head element 3 and the spray head 13 are made of plastic. In addition, the plastic facilitates in the head element 3, the seal against the nozzle housing 1 and the spray head 13, the formation of a clip closure.
    权利要求:
    Claims (14)
    [1]
    Claims 1. A self-cleaning nozzle for spraying a fluid with a nozzle housing (1) and a multi-part nozzle head arranged therein, which includes a flow channel (4) with an outlet opening (5) for the fluid, characterized in that the nozzle head at least one fixed (2) and at least one displaceably (3) mounted head element, each forming a portion of the outlet opening (5), wherein the displaceable head element (3) during normal operation of the fluid pressure against a lying in the flow direction (6) of the fluid stop (7 ) and during self-cleaning at a reduced fluid pressure by a spring (8) against the flow direction (6) is pressed.
    [2]
    2. Self-cleaning nozzle according to claim 1, characterized in that the displaceable head element (3) during the self-cleaning of the spring (8) against a counter to the flow direction (6) lying stop (9) is pressed.
    [3]
    3. Self-cleaning nozzle according to claim 1 or 2, characterized in that the cross-section of the flow channel (4) in the nozzle head to the outlet opening (5) down at least partially reduced, preferably continuously reduced.
    [4]
    4. Self-cleaning nozzle according to one of the preceding claims, characterized in that the cross section of the flow channel (4) in the nozzle head is round, in particular circular.
    [5]
    5. Self-cleaning nozzle according to one of the preceding claims, characterized in that the fixed head element (2) attached to the nozzle housing (1), preferably integrally formed together with this.
    [6]
    6. Self-cleaning nozzle according to one of the preceding claims, characterized in that the stops (7,9) from the nozzle housing (1) are formed.
    [7]
    7. Self-cleaning nozzle according to one of the preceding claims, characterized in that the spring (8) in a recess (10) of the displaceable head element (3) is housed.
    [8]
    8. Self-cleaning nozzle according to one of the preceding claims, characterized in that the nozzle head is formed in two parts.
    [9]
    9. Self-cleaning nozzle according to one of the preceding claims, characterized in that a parting plane (11) between the two head elements (2,3) parallel to the flow direction (6).
    [10]
    10. Self-cleaning nozzle according to claim 8 or 9, characterized in that the parting plane (11) between the two head elements (2,3) through the center of the flow channel (4) runs.
    [11]
    11. Self-cleaning nozzle according to one of the preceding claims, characterized in that the fixed head element (2) projects beyond the outlet opening (5) with a jet guide (12) and changes the fluid jet emerging from the outlet opening (5) with respect to direction and / or shape ,
    [12]
    12. Self-cleaning nozzle according to one of the preceding claims, characterized in that the outlet opening (5) of the nozzle head in a nozzle housing (1) preferably releasably attach spray head (13) opens.
    [13]
    13. Self-cleaning nozzle according to one of the preceding claims, characterized in that at least the displaceable head element (3) and / or the spray head (13) consist of plastic.
    [14]
    14. Self-cleaning nozzle according to one of the preceding claims, characterized in that the displaceable head element (3) relative to the nozzle housing (1) is sealed. For this 1 sheet drawings
    类似技术:
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    同族专利:
    公开号 | 公开日
    CN203842735U|2014-09-24|
    DE102011079304A1|2013-01-24|
    WO2013010930A1|2013-01-24|
    FI10412U1|2014-03-13|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    EP0009909A1|1978-09-18|1980-04-16|Albany International Corp.|Spray nozzle for a dual-purpose shower system|
    DE4324731A1|1992-07-23|1994-01-27|Spraying Systems Co|Self-cleaning spray nozzle|
    US3268172A|1964-01-27|1966-08-23|Lodding Engineering Corp|Shower device with shut-off means|
    US3807633A|1972-10-12|1974-04-30|Bird Machine Co|Shower apparatus|
    JP2532323Y2|1990-10-26|1997-04-16|株式会社いけうち|nozzle|
    GB9926143D0|1999-11-05|2000-01-12|Incro Ltd|Spray technology improvement|BE1021628B1|2014-10-30|2015-12-21|R.C.S. Rabotage Sprl|Lime slurry spreader and tanker truck for the application of lime milk|
    CN104624426B|2015-02-12|2016-09-07|天津成科自动化工程技术有限公司|From block clearing sprayer|
    CN106861944B|2017-04-12|2018-12-07|浙江荣林环境股份有限公司|A kind of drought spray anti-blocking sprayer|
    DE102019205737A1|2019-04-18|2020-10-22|Glatt Gesellschaft Mit Beschränkter Haftung|Method for monitoring a nozzle mouthpiece for deposits on a nozzle|
    DE102019205738A1|2019-04-18|2020-10-22|Glatt Gesellschaft Mit Beschränkter Haftung|A one-piece inner tube having a self-cleaning nozzle|
    DE102019205741A1|2019-04-18|2020-10-22|Glatt Gesellschaft Mit Beschränkter Haftung|Self-cleaning nozzle|
    DE102019205743A1|2019-04-18|2020-10-22|Glatt Gesellschaft Mit Beschränkter Haftung|Method for controlling or regulating the volume flow of a nozzle|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE102011079304A|DE102011079304A1|2011-07-18|2011-07-18|Self-cleaning nozzle|
    PCT/EP2012/063758|WO2013010930A1|2011-07-18|2012-07-13|Self-cleaning nozzle|
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