A showerhead

Abstract

The application relates to the technical field of spray heads, in particular to a spray head which comprises a frame, a cavity and a containing cavity are sequentially and communicatively arranged in the frame, the inner diameter of the cavity is smaller than that of the containing cavity, so that a first cavity surface is formed at the transition of the cavity and the containing cavity; a sealing piece is arranged on the first cavity surface; a pressing plate module comprises a pressing plate, the pressing plate is located in the containing cavity, and the pressing plate covers and abuts against the sealing piece; and a trigger module is detachably connected with the containing cavity, the trigger module abuts against the pressing plate, and the pressing plate is pressed against the sealing piece through the trigger module; the technical problem of how to improve the relationship among the modules of the spray head is solved, and the technical effect of quick response is achieved.

Description

Technical Field

[0001] This application relates to the field of nozzle technology, and in particular to a nozzle. Background Technology

[0002] In existing technologies, sprinkler head sealing is achieved by using a plug with a sealing ring and a frame. Furthermore, in existing technologies, the resistance of the plug with the sealing ring is provided by a temperature-sensitive glass bulb vertically pressing against the center of the plug.

[0003] The solution in this application employs a new trigger module, which is no longer a simple temperature-sensing glass ball, but a module composed of two blocks and a temperature-sensing glass ball. In conventional combinations of such trigger modules, a balancing module is needed between the trigger module and the sealing module to stably transfer the contact force of the trigger module to the sealing module, ensuring a tight seal between the sealing module and the first cavity surface in the frame. A typical sealing module, designed to seal the cavity of the frame, includes a sealing element and a cover plate that defines the position of the sealing element and covers the first cavity surface. In other words, the conventional balancing module is only responsible for transmitting the contact force supporting the seal, and the sealing module is only responsible for sealing the first cavity surface. The applicant further innovates upon its novel nozzle by improving the balancing module and the sealing module.

[0004] Therefore, the technical problem with existing technologies lies in how to improve the relationship between the various modules of the nozzle. Summary of the Invention

[0005] This application provides a printhead that solves the technical problem of how to improve the relationship between the various modules of the printhead, thereby achieving a rapid response effect.

[0006] This application provides a nozzle, comprising: a frame, wherein a cavity and a receiving cavity are sequentially connected in the frame, the inner diameter of the cavity being smaller than the inner diameter of the receiving cavity, such that a first cavity surface is formed at the transition between the cavity and the receiving cavity; a sealing element disposed on the first cavity surface; a pressure plate module, the pressure plate module including a pressure plate located in the receiving cavity, and the pressure plate covering and abutting against the sealing element; and a trigger module, the trigger module being detachably connected to the receiving cavity, the trigger module abutting against the pressure plate, and the trigger module causing the pressure plate to press the sealing element tightly.

[0007] Preferably, the trigger module includes a rolling element, which is movably disposed on one side of the trigger module corresponding to the pressure plate, and the rolling element abuts against the pressure plate.

[0008] Preferably, the contact position between the pressure plate and the seal is the first position, and the contact position between the pressure plate and the trigger module is the second position; wherein the first position and the second position are directly corresponding to each other on both sides of the pressure plate.

[0009] Preferably, the contact area between the trigger module and the pressure plate is a first area, and the contact area between the seal and the pressure plate is a second area; wherein the projection of the first area along the axial direction of the pressure plate is located in the second area.

[0010] Preferably, the pressure plate module further includes a guide member, which is disposed on the first plate surface of the pressure plate and is located in the cavity; the guide member allows the pressure plate module to detach from the frame after being impacted by the water flow from the fire pipeline.

[0011] Preferably, the guide member has an inclined surface relative to the axial direction of the cavity.

[0012] Preferably, a recessed sealing groove is provided on the first cavity surface, a part of the sealing element is located in the sealing groove, and another part of the sealing element is located in the sealing groove and in contact with the pressure plate.

[0013] Preferably, the sealing groove is provided with a first groove surface, a second groove surface and a third groove surface, and the sealing element is in contact with at least one of the aforementioned three groove surfaces and is in contact with the first plate surface of the pressure plate.

[0014] Preferably, the first cavity surface is provided with a protrusion that protrudes from the sealing film, and the protrusion is a continuous circumferential structure;

[0015] The sealing element is a sealing membrane, the first end face of which is fixedly disposed on the first plate surface of the pressure plate, and the second end face of which is in contact with the protrusion.

[0016] Preferably, the nozzle further includes a water splashing module, the water splashing module comprising:

[0017] A splash plate is disposed in the outer region of the frame on the side where the receiving cavity is located, and the central axis of the splash plate and the central axis of the cavity are collinear.

[0018] A connecting rod, the two ends of which are respectively connected to the splash plate and the frame, so that the position of the splash plate relative to the cavity is fixed.

[0019] Preferably, the connection method between the connecting rod and the frame is one or a combination of welding, threaded connection, snap-fit, riveting, bonding, pin connection, and key connection.

[0020] Unlike existing technologies, the advantages of this application are: by optimizing the conventional sealing module, only the core sealing element is retained; the conventional balancing module is redesigned as a pressure plate module to cooperate with the sealing element, and the pressure plate module stably transmits the force from the trigger module to achieve uniform pressure on the sealing element, thereby achieving stable sealing of the first cavity surface after the pressure plate and the sealing element are combined; the technical problem of how to improve the relationship between the modules of the nozzle is solved, achieving the technical effect of rapid response. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the isometric structure of the nozzle in this application;

[0022] Figure 2 This is a schematic diagram of the main view cross-sectional structure of the nozzle in this application;

[0023] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0024] Figure 4 yes Figure 3 A schematic diagram of another implementation method;

[0025] Figure 5 yes Figure 3 A schematic diagram of another embodiment;

[0026] Figure 6 This is a front-view exploded structural diagram of the trigger module, pressure plate module, and seal in this application.

[0027] Explanation of reference numerals in the attached figures:

[0028] 100. Frame; 11. Cavity; 12. Sealing groove; 12a. First groove surface; 12b. Second groove surface; 12c. Third groove surface; 13. Receiving cavity; 13a. First cavity surface; 14. Protrusion; 200. Trigger module; 21. Seat; 211. Rolling element; 22. Temperature sensing element; 23. First retaining ring; 24. Second retaining ring; 25. Snap ring; 300. Pressure plate module; 31. Pressure plate; 31a. First plate surface; 32. Guide element; 400. Sealing element; 500. Splashing module; 51. Splashing plate; 52. Connecting rod; X. Central axis of the cavity. Detailed Implementation

[0029] The serial numbers assigned to components in this document, such as "first" and "second," are used solely to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages). It should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are used solely for the convenience of describing this application and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0030] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0031] To better understand the above technical solutions, a detailed description of the technical solutions will be provided below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit the scope of this application.

[0032] This application provides a nozzle, with reference to... Figure 1 and Figure 2The nozzle includes a frame 100, a trigger module 200, a pressure plate module 300, a seal 400, and a splashing module 500. The seal 400, pressure plate module 300, and trigger module 200 are stacked sequentially in the receiving cavity 13 of the frame 100. The insertion depth of the trigger module 200 in the receiving cavity 13 can be adjusted. By adjusting the position of the trigger module 200 in the receiving cavity 13, the seal 400 is pressed by the pressure plate module 300. The deformed seal 400, together with the pressure plate 31, seals the end face of the cavity 11, preventing water in the fire protection pipe network from moving from the cavity 11 of the frame 100 into the receiving cavity 13. Understandably, when the sprinkler head is triggered, the trigger module 200 disintegrates / retracts due to the breakage of the temperature sensing element 22 to release its connection with the receiving cavity 13. After the aforementioned connection is released, the trigger module 200 is dislodged from the receiving cavity 13 by the water pressure of the fire pipeline, and the pressure plate module 300 is dislodged from the receiving cavity 13 by the water pressure, thereby causing the sealing measures of the originally sealed cavity 11 to fail, allowing the sprinkler head to perform normal water spraying and fire extinguishing work.

[0033] In one embodiment, reference Figure 3 A cavity 11 and a receiving cavity 13 are sequentially connected in the frame 100. The inner diameter of the cavity 11 is smaller than the inner diameter of the receiving cavity 13, so that a first cavity surface 13a is formed at the transition between the cavity 11 and the receiving cavity 13 (i.e., a stepped surface is formed at the transition between the cavity 11 and the receiving cavity 13; the sealing concept of this application is to achieve the sealing of the cavity 11 by setting a pressure plate module and a sealing element on the stepped surface); the sealing element 400 is disposed on the first cavity surface 13a (at this time, the sealing element 400 is disposed in the cavity 11 near the receiving cavity). The outer periphery of one end face, or the seal 400 covering the end face of the cavity 11 near the receiving cavity); the pressure plate module 300 includes a pressure plate 31, which is located in the receiving cavity 13 and covers and abuts against the seal 400 (i.e., the pressure plate 31 and the seal 400 together cover the end face of the cavity 11 near the receiving cavity); and a trigger module 200 is detachably connected to the receiving cavity 13, the trigger module 200 abuts against the pressure plate 31, and the trigger module 200 causes the pressure plate 31 to press the seal 400.

[0034] Frame 100, Reference Figure 1 and Figure 3 This serves as the structural foundation for the fire sprinkler head. A cavity 11 and a receiving cavity 13 are sequentially connected within the frame 100. The inner diameter of the cavity 11 is smaller than the inner diameter of the receiving cavity 13, so that a first cavity surface 13a is formed at the transition between the cavity 11 and the receiving cavity 13. (Reference) Figure 3In one embodiment, a recessed sealing groove 12 is provided on the first cavity surface 13a. A portion of the sealing member 400 is located in the sealing groove 12, and another portion of the sealing member 400 is located in the sealing groove 12 and contacts the pressure plate 31. By providing the sealing groove 12, it is beneficial to limit the position of the sealing member 400, so that when the pressure plate 31 abuts against the sealing member 400, the tendency of the sealing member 400 to deform is limited to a certain range, ensuring that the deformation of the sealing member 400 is conducive to sealing the first cavity surface 13a. For example, the sealing groove 12 is a rectangular groove or a round-bottomed groove, and a first groove surface 12a, a second groove surface 12b, and a third groove surface 12c are provided in the sealing groove 12. The sealing member 400 is in contact with at least one of the aforementioned three groove surfaces, and the sealing member 400 is in contact with the first plate surface 31a of the pressure plate 31. In another embodiment, refer to Figure 4 No sealing groove 12 is provided on the first cavity surface 13a. The sealing element 400 determines its position on the first cavity surface 13a by its own annular shape and the force of the pressure plate 31.

[0035] Trigger module 200, see reference Figure 2 The trigger module 200 acts as a temperature-triggered actuator to support the pressure plate module 300 and the seal 400. The trigger module 200 and the receiving cavity 13 are detachably connected. The trigger module 200 abuts against the pressure plate 31, causing the pressure plate 31 to press against the seal 400. For an exemplary view of the structure of the trigger module 200, refer to [reference needed]. Figure 6 The trigger module 200 includes a base 21, a temperature sensing element 22, a first retaining ring 23, a second retaining ring 24, and a retaining spring 25. There are two bases 21. The temperature sensing element 22 is located between the middle of the two bases 21. The first retaining ring 23 and the second retaining ring 24 are respectively secured at the upper and lower ends of the two bases 21. The temperature sensing element 22 limits the gap between the two bases 21 from decreasing, and the first retaining ring 23 and the second retaining ring 24 limit the gap between the two bases 21 from increasing. Ultimately, the gap between the two bases 21 is limited to a fixed value. That is, the outer contour dimension between the two bases 21 is fixed by the temperature sensing element 22, the first retaining ring 23, and the second retaining ring 24, making the trigger module 200 a pre-assembled unit. In other words, by using the temperature sensing element 22 to define the outer contour of the trigger module 200, the outer contour of the trigger module 200 may shrink after the temperature sensing element 22 breaks, thus releasing the support of the pressure plate 31 by allowing the trigger module 200 to disengage from the receiving cavity 13 after triggering. It should be emphasized that the retaining spring 25 is deformed and locked between the two seats 21, so that the two seats 21 tend to move closer to each other (i.e., the outer contour of the trigger module 200 tends to shrink); specifically, the retaining spring 25 can be locked at the upper part of the two seats 21, or it can be locked at the lower part of the two seats 21.

[0036] Regarding the seat 21, it should be noted that the end face of the seat 21 relative to the pressure plate 31 is provided with a rolling element 211. The rolling element 211 abuts against the pressure plate 31 and can roll on the aforementioned end face. This is to prevent the pressure plate 31 from rotating during the threaded connection between the trigger module 200 and the receiving cavity 13, thereby affecting the contact state between the seal 400 and the pressure plate 31. It also prevents the seal 400 from being partially deformed due to the rotation of the pressure plate 31, which would affect the final sealing effect.

[0037] Regarding the force relationship between the trigger module 200, the pressure plate module 300, and the sealing element 400, it should be noted that in one embodiment, the contact position between the pressure plate 31 and the sealing element 400 is the first position, and the contact position between the pressure plate 31 and the trigger module 200 is the second position; wherein, the first position and the second position are directly corresponding on both sides of the pressure plate 31. This direct correspondence ensures that the force transmitted from the trigger module 200 to the pressure plate 31 can be stably and without deviation transmitted to the sealing element 400, making the deformation direction of the sealing element 400 controllable, ultimately resulting in a stable sealing effect. In another embodiment, the contact area between the trigger module 200 and the pressure plate 31 is the first region, and the contact area between the sealing element 400 and the pressure plate 31 is the second region; wherein, the projection of the first region along the axial direction of the pressure plate 31 lies within the second region. This configuration ensures that the force exerted by the rolling element 211 of the trigger module 200 on the pressure plate 31 allows the pressure plate 31 to stably press the sealing element 400.

[0038] Pressure plate module 300, reference Figure 2 and Figure 6 The pressure plate module 300 is used to seal the first cavity surface 13a in conjunction with the sealing element 400. The pressure plate module 300 includes a pressure plate 31 and a guide plate. The pressure plate 31 is located in the receiving cavity 13 and covers and abuts against the sealing element 400. The guide plate 32 is disposed on the first plate surface 31a of the pressure plate 31 and is located in the cavity 11. The guide plate 32 allows the pressure plate module 300 to be ejected from the frame 100 after being impacted by the water flow from the fire-fighting pipeline. In one embodiment, the guide plate 32 has an inclined surface relative to the axial direction of the cavity 11 or the guide plate 32 is offset relative to the cavity 11 so that the water flow in the pipeline can push the pressure plate module 300 out of the receiving cavity.

[0039] Seal 400, reference Figure 3 , Figure 4 as well as Figure 5The sealing is achieved through deformation. A sealing element 400 is disposed on the first cavity surface 13a, sealing the space between the pressure plate 31 and the first cavity surface 13a. The sealing element 400 can be a rubber ring or a polytetrafluoroethylene gasket / diaphragm. It is understood that the sealing element 400 and the pressure plate 31 can be pre-assembled together, or the sealing element 400 and the frame 100 can be pre-assembled together; the pre-assembly method can be adhesive bonding or snap-fit. If the sealing element 400 is a sealing membrane, refer to... Figure 5 The first cavity surface 13a may not have a sealing groove 12. The first cavity surface 13a has a protrusion 14 protruding from the sealing membrane. The protrusion 14 is a continuous ring structure. The first end face of the sealing membrane is fixedly mounted on the first plate surface 31a of the pressure plate 31, and the second end face of the sealing membrane is in contact with the protrusion 14.

[0040] Splash module 500, reference Figure 1 and Figure 2 It is used to guide the water flow from the fire protection pipe network to distribute the water evenly. The splashing module 500 includes a splashing plate 51 and a connecting rod 52. The splashing plate 51 is located in the outer area of ​​the frame 100 on the side with the receiving cavity 13, and the central axis of the splashing plate 51 and the central axis of the cavity 11 are collinear. The two ends of the connecting rod 52 are connected to the splashing plate 51 and the frame 100 respectively, so that the position of the splashing plate 51 relative to the cavity 11 is fixed.

[0041] It is important to emphasize that the connection method between the connecting rod 52 and the frame 100 is one or a combination of welding, threaded connection, snap-fit, riveting, bonding, pin connection, and key connection. In one embodiment, adhesive is applied to the connecting end of the connecting rod 52, and then the connecting end of the connecting rod 52 is threadedly connected to the frame 100. It is understood that compared to the traditional fire sprinkler frame 100, the connecting rod 52 alters the traditional integrated structural design of the frame 100 and the deflector module 500. The frame 100 and the connecting rod 52 can be manufactured separately, making the fire sprinkler frame easier to manufacture and reducing costs.

[0042] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0043] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A showerhead, characterized by, The nozzle includes: A frame (100) is provided with a cavity (11) and a receiving cavity (13) connected in sequence. The inner diameter of the cavity (11) is smaller than the inner diameter of the receiving cavity (13) so that a first cavity surface (13a) is formed at the transition between the cavity (11) and the receiving cavity (13). A sealing element (400) is disposed on the first cavity surface (13a); A pressure plate module (300) comprising a pressure plate (31) located in the receiving cavity (13) and covering and abutting the seal (400); and The trigger module (200) is detachably connected to the receiving cavity (13). The trigger module (200) abuts against the pressure plate (31), and the pressure plate (31) presses the sealing element (400) through the trigger module (200).

2. The showerhead of claim 1, wherein The trigger module (200) includes a rolling element (211), which is movably disposed on one side of the trigger module (200) corresponding to the pressure plate (31) and abuts against the pressure plate (31).

3. The showerhead of claim 1, wherein The contact position between the pressure plate (31) and the seal (400) is the first position, and the contact position between the pressure plate (31) and the trigger module (200) is the second position; wherein the first position and the second position are directly corresponding to each other on both sides of the pressure plate (31).

4. The showerhead of claim 1, wherein The contact area between the trigger module (200) and the pressure plate (31) is the first area, and the contact area between the seal (400) and the pressure plate (31) is the second area; wherein the projection of the first area along the axial direction of the pressure plate (31) is located in the second area.

5. The showerhead of claim 1, wherein The pressure plate module (300) also includes a guide (32), which is disposed on the first plate surface (31a) of the pressure plate (31) and is located in the cavity (11); the guide (32) allows the pressure plate module (300) to detach from the frame (100) after being impacted by the water flow of the fire-fighting pipeline.

6. The showerhead of claim 1, wherein A recessed sealing groove (12) is provided on the first cavity surface (13a). A part of the sealing member (400) is located in the sealing groove (12), and another part of the sealing member (400) is located in the sealing groove (12) and in contact with the pressure plate (31).

7. The showerhead of claim 6, wherein, The sealing groove (12) is provided with a first groove surface (12a), a second groove surface (12b) and a third groove surface (12c). The sealing element (400) is in contact with at least one of the aforementioned three groove surfaces and is sealed to the first plate surface (31a) of the pressure plate (31).

8. The showerhead of claim 1, wherein The first cavity surface (13a) is provided with a protrusion (14) protruding from the sealing film, and the protrusion (14) is a continuous surrounding structure; The sealing element (400) is a sealing membrane. The first end face of the sealing membrane is fixedly disposed on the first plate surface (31a) of the pressure plate (31), and the second end face of the sealing membrane is in contact with the protrusion (14).

9. The showerhead of claim 1, wherein The nozzle also includes a water splashing module (500), which includes: A splash plate (51) is provided on the outer area of ​​the frame (100) on the side where the receiving cavity (13) is located, and the central axis of the splash plate (51) and the central axis X of the cavity (11) are collinear; A connecting rod (52) is provided, with its two ends connected to the splash plate (51) and the frame (100) respectively, so that the position of the splash plate (51) relative to the cavity (11) is fixed.

10. The showerhead of claim 9, wherein, The connection method between the connecting rod (52) and the frame (100) is one or more combinations of welding, threaded connection, snap-fit, riveting, bonding, pin connection, and key connection.

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