Drip-proof device for water mist nozzle

Abstract

The utility model belongs to the technical field of water mist spray nozzles, and discloses a water mist spray nozzle drip-proof device which comprises a pipe fitting connected with a water supply pipeline, a valve body assembly is arranged in the pipe fitting, a water delivery channel is formed in the valve body assembly and fixed in the pipe fitting, the valve body assembly is provided with a liquid inlet end and a liquid outlet end, a movable valve element part is arranged in the valve body assembly, and the valve element part is fixed in the pipe fitting. The valve element part comprises a connecting pipe, one side of the connecting pipe is connected with a sealing valve seat, the peripheral face of the connecting pipe is provided with a second annular groove, the second annular groove is sleeved with a second sealing ring, and by moving the connecting pipe, the sealing valve seat and the second sealing ring can be separated from or blocked from the liquid outlet end and the liquid inlet end respectively. The liquid inlet end and the liquid outlet end of the valve body assembly are blocked by moving the connecting pipe and the sealing valve seat back to the original position, so that the device does not leak water, waste of water resources is avoided, adverse effects on the surrounding environment and used equipment are avoided, and equipment damage or short circuit is avoided.

Description

Technical Field

[0001] This utility model belongs to the field of water mist nozzle technology, specifically relating to a drip-proof device for a fine water mist nozzle. Background Technology

[0002] Fine water mist nozzles, as a key component of sprinkler systems, are widely used in firefighting, agricultural irrigation, and industrial cooling. During normal use, fine water mist nozzles atomize water into tiny droplets, achieving a uniform and efficient spraying effect. However, in practical applications, such as emergency training or actual use, dripping occurs because personnel often need to spray water intermittently. This dripping not only wastes water resources but can also adversely affect the surrounding environment and the equipment. In firefighting, dripping can lead to equipment damage or short circuits, thus reducing the reliability of the fire protection system. Utility Model Content

[0003] The purpose of this invention is to provide a drip-proof device for a fine water mist nozzle to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a fine water mist nozzle anti-drip device, comprising a pipe fitting connected to a water supply pipeline, wherein a valve body assembly is installed inside the pipe fitting, a water conveying channel is formed inside the valve body assembly, and the valve body assembly is fixed inside the pipe fitting, wherein the valve body assembly has an inlet end and an outlet end, and a valve core portion that can move relative to the inlet end and the outlet end is installed inside the valve body assembly;

[0005] The valve core includes a coaxially arranged connecting pipe. A sealing valve seat is fixedly connected to the side of the connecting pipe facing the liquid outlet end of the pipe fitting. The circumferential surface of the connecting pipe is recessed to form a second annular groove. A second sealing ring is sleeved inside the second annular groove. By moving the connecting pipe, the sealing valve seat and the second sealing ring are separated from the discharge end and the inlet end, respectively, or the discharge end and the inlet end are blocked.

[0006] Preferably, the pipe fitting includes a housing, and a connecting flange is fixedly connected to the liquid inlet end of the housing.

[0007] Preferably, the valve body assembly includes a conical cover, which is coaxially fixedly connected to the interior of the housing, and the diameter of the conical cover gradually decreases from one side near the liquid outlet end of the housing to the other side. The conical cover forms a liquid guide hole on the side facing the connecting flange, and the interior of the housing has a through mounting cavity extending axially.

[0008] Preferably, the connecting pipe is disposed inside the conical cover, and a piston rod is fixedly connected to the side of the connecting pipe facing the liquid guide hole. The free end of the piston rod passes through the liquid guide hole and is fixedly connected to a sealing plate. Side plates are symmetrically fixedly connected to the outer periphery of the conical cover, and a spring is fixedly connected between the sealing plate and the side plate.

[0009] Preferably, the connecting pipe is disposed inside the conical cover, and the connecting pipe has an inner cavity and a through side hole on its circumference. A movable piston rod is disposed inside the connecting pipe. The free end of the piston rod moves through the connecting pipe and the liquid guide hole and is fixedly connected to a sealing plate. A side plate is symmetrically fixedly connected to the outer circumference of the conical cover. A spring is fixedly connected between the sealing plate and the side plate. The distance between the side hole and the sealing valve seat is less than the distance between the side hole and the sealing plate.

[0010] Preferably, a rubber ring is provided on the side of the piston rod facing the sealing valve seat.

[0011] Preferably, a first annular groove is formed by recessing the circumferential surface of the sealing valve seat, and a first sealing ring is fitted on the first annular groove.

[0012] Preferably, a sealing ring is coaxially fixedly connected inside the mounting cavity. The top of the sealing ring is open to form a through hole, and the bottom of the sealing ring forms a sealing groove that matches the sealing plate. The diameter of the sealing groove is larger than the diameter of the through hole.

[0013] Preferably, a handle is fixedly connected to the outer peripheral surface of the housing.

[0014] Preferably, a diffuser is fixedly connected to the end of the housing away from the connecting flange.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] (1) This utility model sets up a valve body assembly and a connecting pipe and a sealing valve seat that move back and forth relative to the valve body assembly. Water is sprayed out between the valve body assembly and the sealing valve seat by the movement of the connecting pipe and the sealing valve seat. When the device stops spraying water, the connecting pipe and the sealing valve seat move back to their original positions to block the liquid inlet and liquid outlet of the valve body assembly, so that the device will not leak water, avoid waste of water resources, and will not have an adverse impact on the surrounding environment and the equipment, and avoid equipment damage or short circuit.

[0017] (2) Based on the above-mentioned beneficial effects, when the sealing plate is moved back to its original position by the spring, the piston rod is moved in the inner cavity by the sealing plate, so that the side hole draws in the gas in the conical hood, so that the temporal part of the conical hood is relatively negatively pressured, further reducing the probability of water leakage from the device. Attached Figure Description

[0018] Figure 1 This is one of the perspective views of this utility model;

[0019] Figure 2 This is a second perspective view of the present invention;

[0020] Figure 3 This is one of the perspective views of the sealing valve seat of this utility model after it has been moved;

[0021] Figure 4 This is the second perspective view of the sealing valve seat of this utility model after it has been moved;

[0022] Figure 5 This is a front view of the present invention after the handle and diffuser have been connected;

[0023] Figure 6 This is a cross-sectional view of the present invention;

[0024] Figure 7 This is one of the three-dimensional sectional views of the sealing ring of this utility model;

[0025] Figure 8 This is the second sectional view of the sealing ring of this utility model.

[0026] Figure 9 This is a cross-sectional view of the present invention with the housing and sealing ring removed;

[0027] Figure 10 This is a perspective view of the present invention with the housing and sealing ring removed.

[0028] In the diagram: 1. Shell; 2. Connecting flange; 3. Sealing valve seat; 4. Side plate; 5. Handle; 6. Sealing ring; 7. Sealing groove; 8. Mounting cavity; 9. Sealing plate; 10. Conical cover; 11. First sealing ring; 12. First annular groove; 13. Through hole; 14. Connecting pipe; 15. Second sealing ring; 16. Liquid guide hole; 17. Piston rod; 18. Second annular groove; 19. Inner cavity; 20. Side hole; 21. Spring; 22. Flow diffuser. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Please see Figures 1-10 As shown, this utility model provides the following technical solution:

[0031] A fine water mist nozzle anti-drip device includes a pipe fitting connected to a water supply pipeline, a valve body assembly installed inside the pipe fitting, a water conveying channel formed inside the valve body assembly, and the valve body assembly fixed inside the pipe fitting. The valve body assembly has an inlet end and an outlet end, and a valve core portion that can move relative to the inlet end and the outlet end is installed inside the valve body assembly.

[0032] The valve core includes a coaxially arranged connecting pipe 14. A sealing valve seat 3 is fixedly connected to the side of the connecting pipe 14 facing the liquid outlet end of the pipe fitting. The circumferential surface of the connecting pipe 14 is recessed to form a second annular groove 18. A second sealing ring 15 is sleeved inside the second annular groove 18. By moving the connecting pipe 14, the sealing valve seat 3 and the second sealing ring 15 are separated from the discharge end and the inlet end, respectively, or the discharge end and the inlet end are blocked.

[0033] With the above technical solution, when personnel need to spray water for emergency treatment, the pipe fitting is connected to the water supply pipeline. After the pipe fitting is connected to the water supply pipeline, when personnel need to spray water through the device, water is transported through the water supply pipeline and then delivered to the inside of the pipe fitting. When the water enters the inside of the pipe fitting, it pushes the valve core part, causing the connecting pipe 14 to move towards the outlet end of the pipe fitting. When the connecting pipe 14 moves, it will drive the second sealing ring 15 and the sealing valve seat 3 to move synchronously, so that the second sealing ring 15 and the sealing valve seat 3 are separated from the inlet end and the outlet end of the valve body assembly, respectively, and the water is sprayed out through the valve body assembly. When personnel no longer need the device to spray water, the water supply pipeline stops transporting water, the valve core part moves back, and the connecting pipe 14 drives the second sealing ring 15 and the sealing valve seat 3 to move back synchronously, so that the second sealing ring 15 and the sealing valve seat 3 block the inlet end and the outlet end of the valve body assembly, respectively, thereby preventing water from dripping from the outlet end of the pipe fitting.

[0034] Specifically, in one embodiment, regarding the above-mentioned pipe fittings:

[0035] like Figures 1-4 As shown, the pipe fitting includes a housing 1, a connecting flange 2 is fixedly connected to the liquid inlet end of the housing 1, a handle 5 is fixedly connected to the outer circumference of the housing 1, and a diffuser 22 is fixedly connected to the end of the housing 1 away from the connecting flange 2.

[0036] In this embodiment, when personnel need to connect the pipe fittings to the water supply pipe, the water supply pipe is connected to the connecting flange 2, thereby fixing the water supply pipe to the housing 1. When personnel need to spray water through the housing 1, the housing 1 can be moved easily by the handle 5, and the angle of the water sprayed by the device can be increased by the diffuser 22.

[0037] Furthermore, in this utility model, regarding the aforementioned valve body assembly, as follows: Figure 4 , Figure 6 , Figures 9-10As shown, the valve body assembly includes a conical cover 10, which is coaxially fixedly connected to the inside of the housing 1. The diameter of the conical cover 10 gradually decreases from one side near the liquid outlet end of the housing 1 to the other side. A liquid guide hole 16 is formed on the side of the conical cover 10 facing the connecting flange 2. A through mounting cavity 8 is provided in the inside of the housing 1 along its axial direction.

[0038] In this embodiment, after the water supply pipe is fixedly connected to the housing 1, water is transported through the water supply pipe and then transported into the housing 1. When the water enters the housing 1, it pushes the valve core, causing the connecting pipe 14 to move toward the liquid outlet of the conical cover 10. When the connecting pipe 14 moves, it will drive the second sealing ring 15 and the sealing valve seat 3 to move synchronously, so that the second sealing ring 15 and the sealing valve seat 3 are separated from the liquid guide hole 16 and the liquid outlet of the conical cover 10, respectively, and the water is sprayed out through the gap between the conical cover 10 and the sealing valve seat 3. When the personnel do not need the device to spray water, the water supply pipe stops transporting water, the valve core moves back, and the connecting pipe 14 drives the second sealing ring 15 and the sealing valve seat 3 to move back synchronously, so that the second sealing ring 15 and the sealing valve seat 3 block the liquid guide hole 16 and the liquid outlet of the conical cover 10, respectively, thereby preventing water from dripping from the liquid outlet of the housing 1.

[0039] Regarding how to move connecting pipe 14, as follows: Figure 6 , Figures 9-10 As shown, the present invention provides the following embodiments:

[0040] Implementation Method 1

[0041] The connecting pipe 14 is located inside the conical cover 10, and a piston rod 17 is fixedly connected to the side of the connecting pipe 14 facing the liquid guide hole 16. The free end of the piston rod 17 passes through the liquid guide hole 16 and is fixedly connected to a sealing plate 9. A side plate 4 is symmetrically fixedly connected to the outer periphery of the conical cover 10, and a spring 21 is fixedly connected between the sealing plate 9 and the side plate 4.

[0042] In this embodiment, when water enters the housing 1, it pushes the sealing plate 9, causing the sealing plate 9 to move the piston rod 17 and the connecting pipe 14 toward the liquid outlet of the conical cover 10. When the connecting pipe 14 moves, it causes the second sealing ring 15 and the sealing valve seat 3 to move synchronously, causing the second sealing ring 15 and the sealing valve seat 3 to separate from the liquid guide hole 16 and the liquid outlet of the conical cover 10, respectively. This allows the water to spray out through the gap between the conical cover 10 and the sealing valve seat 3. When the sealing plate 9 moves, it compresses the spring 21. When the water is no longer needed, the water supply pipe stops supplying water. The spring 21 rebounds, causing the spring 21 to push the sealing plate 9 back, causing the connecting pipe 14 to move the second sealing ring 15 and the sealing valve seat 3 back synchronously. This causes the second sealing ring 15 and the sealing valve seat 3 to block the liquid guide hole 16 and the liquid outlet of the conical cover 10, respectively, thus preventing water from dripping from the liquid outlet of the housing 1.

[0043] Implementation Method 2

[0044] The connecting pipe 14 is located inside the conical cover 10, and the connecting pipe 14 has an inner cavity 19. The connecting pipe 14 has a through side hole 20 on its circumference. The connecting pipe 14 has a movable piston rod 17 inside. The free end of the piston rod 17 moves through the connecting pipe 14 and the liquid guide hole 16 and is fixedly connected to a sealing plate 9. The outer circumference of the conical cover 10 is symmetrically fixedly connected to a side plate 4. A spring 21 is fixedly connected between the sealing plate 9 and the side plate 4. The distance between the side hole 20 and the sealing valve seat 3 is less than the distance between the side hole 20 and the sealing plate 9.

[0045] A rubber ring is provided on the side of the piston rod 17 facing the sealing valve seat 3.

[0046] In this embodiment, when water enters the housing 1, it pushes the sealing plate 9, causing the sealing plate 9 to move the piston rod 17 and the connecting pipe 14 toward the liquid outlet of the conical cover 10. As the connecting pipe 14 moves, it causes the second sealing ring 15 and the sealing valve seat 3 to move synchronously, separating them from the liquid guide hole 16 and the liquid outlet of the conical cover 10, respectively. This allows water to spray out through the gap between the conical cover 10 and the sealing valve seat 3. Furthermore, the movement of the sealing plate 9 compresses the spring 21. When the water is no longer needed, the water supply pipe stops supplying water. The body, through the spring 21, rebounds, causing the spring 21 to push the sealing plate 9 back, causing the connecting pipe 14 to drive the second sealing ring 15 and the sealing valve seat 3 to move back synchronously, so that the second sealing ring 15 and the sealing valve seat 3 block the liquid guide hole 16 and the liquid outlet of the conical cover 10 respectively, thereby preventing water from dripping from the liquid outlet of the housing 1. When the piston rod 17 moves back, it will draw the air inside the inner cavity 19, and through the cooperation of the side hole 20, the air inside the conical cover 10 will be discharged, thereby creating a negative pressure inside the conical cover 10, further reducing the probability of water dripping from the liquid outlet of the housing 1.

[0047] To improve the sealing performance when the sealing valve seat 3 blocks the housing 1, such as Figures 1-6 , Figures 9-10 As shown, a first annular groove 12 is formed by recessing on the circumferential surface of the sealing valve seat 3, and a first sealing ring 11 is fitted on the first annular groove 12.

[0048] In this embodiment, when the sealing valve seat 3 blocks the conical cover 10, the sealing performance between the sealing valve seat 3 and the conical cover 10 is increased by the cooperation of the first annular groove 12 and the first sealing ring 11.

[0049] To further improve the airtightness of the device when water supply is stopped, such as Figures 6-9 As shown, a sealing ring 6 is coaxially fixedly connected inside the mounting cavity 8. The top of the sealing ring 6 is open to form a through hole 13, and the bottom of the sealing ring 6 forms a sealing groove 7 that matches the sealing plate 9. The diameter of the sealing groove 7 is larger than the diameter of the through hole 13.

[0050] In this embodiment, when the sealing plate 9 moves back to its original position, the sealing groove 7 on the sealing ring 6 cooperates with the sealing plate 9 to further improve the airtightness of the device when it stops transporting water.

[0051] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A drip-proof device for a fine water mist nozzle, characterized in that: The device includes a pipe fitting connected to a water supply pipeline, wherein a valve body assembly is installed inside the pipe fitting, the valve body assembly forms a water conveying channel inside the valve body assembly, and the valve body assembly is fixed inside the pipe fitting. The valve body assembly has an inlet end and an outlet end, and a valve core portion that can move relative to the inlet end and the outlet end is installed inside the valve body assembly. The valve core includes a coaxially arranged connecting pipe (14). A sealing valve seat (3) is fixedly connected to the side of the connecting pipe (14) facing the liquid outlet end of the pipe fitting. The circumferential surface of the connecting pipe (14) is recessed to form a second annular groove (18). A second sealing ring (15) is sleeved inside the second annular groove (18). By moving the connecting pipe (14), the sealing valve seat (3) and the second sealing ring (15) are separated from the discharge end and the inlet end respectively, or the discharge end and the inlet end are blocked.

2. The anti-drip device for a fine water mist nozzle according to claim 1, characterized in that: The pipe fitting includes a housing (1), and a connecting flange (2) is fixedly connected to the liquid inlet end of the housing (1).

3. The anti-drip device for a fine water mist nozzle according to claim 2, characterized in that: The valve body assembly includes a conical cover (10), which is coaxially fixedly connected to the inside of the housing (1). The diameter of the conical cover (10) gradually decreases from one side near the liquid outlet end of the housing (1) to the other side. A liquid guide hole (16) is formed on the side of the conical cover (10) facing the connecting flange (2). A through mounting cavity (8) is provided in the inside of the housing (1) along its axial direction.

4. The anti-drip device for a fine water mist nozzle according to claim 3, characterized in that: The connecting pipe (14) is located inside the conical cover (10), and a piston rod (17) is fixedly connected to the side of the connecting pipe (14) facing the liquid guide hole (16). The free end of the piston rod (17) passes through the liquid guide hole (16) and is fixedly connected to a sealing plate (9). The outer circumference of the conical cover (10) is symmetrically fixedly connected to a side plate (4), and a spring (21) is fixedly connected between the sealing plate (9) and the side plate (4).

5. The anti-drip device for a fine water mist nozzle according to claim 3, characterized in that: The connecting pipe (14) is located inside the conical cover (10), and the connecting pipe (14) has an inner cavity (19) and a through side hole (20) on its circumference. A movable piston rod (17) is provided inside the connecting pipe (14). The free end of the piston rod (17) moves through the connecting pipe (14) and the liquid guide hole (16) and is fixedly connected to a sealing plate (9). A side plate (4) is symmetrically fixedly connected to the outer circumference of the conical cover (10). A spring (21) is fixedly connected between the sealing plate (9) and the side plate (4). The distance between the side hole (20) and the sealing valve seat (3) is less than the distance between the side hole (20) and the sealing plate (9).

6. The anti-drip device for a fine water mist nozzle according to claim 5, characterized in that: A rubber ring is provided on the side of the piston rod (17) facing the sealing valve seat (3).

7. The anti-drip device for a fine water mist nozzle according to claim 1, characterized in that: The sealing valve seat (3) has a first annular groove (12) recessed on its circumferential surface, and a first sealing ring (11) is fitted on the first annular groove (12).

8. A drip-proof device for a fine water mist nozzle according to claim 4 or 5, characterized in that: A sealing ring (6) is coaxially fixedly connected inside the mounting cavity (8). The top of the sealing ring (6) is open to form a through hole (13), and the bottom of the sealing ring (6) forms a sealing groove (7) that matches the sealing plate (9). The diameter of the sealing groove (7) is larger than the diameter of the through hole (13).

9. The anti-drip device for a fine water mist nozzle according to claim 2, characterized in that: A handle (5) is fixedly connected to the outer circumferential surface of the housing (1).

10. The anti-drip device for a fine water mist nozzle according to claim 2, characterized in that: A diffuser shroud (22) is fixedly connected to the end of the housing (1) away from the connecting flange (2).

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