Anti-explosion angle valve

Abstract

The utility model discloses an anti-explosion angle valve which comprises an angle valve shell, a lower valve rod, an upper valve rod and a locking seat. The angle valve shell is provided with a water inlet, a water outlet and a mounting opening for mounting the locking seat; the locking seat is mounted in the mounting opening, and the upper valve rod penetrates through the locking seat from bottom to top and is rotatably connected with the locking seat; the lower valve rod penetrates through the water inlet and is in sliding connection with the water inlet, a water sealing pad located on the outer side of the water inlet is arranged on the lower portion of the lower valve rod, and a water passing channel is formed in the lower valve rod above the water sealing pad. The upper valve rod is in threaded connection with the lower valve rod, and the lower valve rod moves up and down relative to the angle valve shell along with rotation of the upper valve rod. Compared with the prior art, the angle valve has the advantages that the upper valve rod and the lower valve rod are in threaded connection in the angle valve shell, and the lower valve rod moves in the axial direction along with rotation of the upper valve rod, so that the distance between the water sealing pad and the water inlet is changed. The structure is simple, the cost is low, and the market competitiveness is better.

Description

Technical Field

[0001] This utility model relates to the field of sanitary ware, specifically to an explosion-proof angle valve. Background Technology

[0002] Angle valves are common water valves in kitchens and bathrooms. They are used to connect concealed water pipes inside the wall to external water-using appliances. The most common failure scenario for angle valves after prolonged use is bursting, causing the valve stem to fly off and resulting in uncontrolled water flow.

[0003] Existing explosion-proof angle valves on the market, such as CN221704488U, use a sleeve with a piston inside to achieve water blocking. However, this type of angle valve has a complex structure and high cost.

[0004] In view of this, the inventor conducted in-depth research on the aforementioned deficiencies in the prior art, which led to the creation of this case. Utility Model Content

[0005] The main objective of this invention is to provide an explosion-proof angle valve that overcomes the shortcomings of existing explosion-proof angle valves mentioned in the background art, such as complex structure and high cost, and provides a low-cost explosion-proof angle valve.

[0006] To achieve the above objectives, the solution of this utility model is:

[0007] An explosion-proof angle valve includes a valve housing, a lower valve stem, an upper valve stem, and a locking seat. The valve housing has an inlet, an outlet, and a mounting opening for mounting the locking seat. The locking seat is installed in the mounting opening. The upper valve stem passes through the locking seat from bottom to top and is rotatably connected to the locking seat. The lower valve stem passes through the inlet and is slidably connected to the inlet. A water-sealing pad is provided at the lower part of the lower valve stem outside the inlet, and a water passage is provided in the lower valve stem above the water-sealing pad. The upper valve stem is threadedly connected to the lower valve stem, and the lower valve stem moves up and down relative to the valve housing as the upper valve stem rotates.

[0008] Furthermore, the lower valve stem above the sealing pad has an anti-rotation section, which cooperates with the inner wall of the inner cavity inside the water inlet to restrict the relative rotation between the lower valve stem and the water outlet.

[0009] Furthermore, the outer periphery of the anti-rotation segment is square or hexagonal.

[0010] Furthermore, the water passage includes a central passage formed at the center of the lower valve stem, and several side passages connecting the central passage and the outer wall of the lower valve stem; the side passages are formed on the corresponding sides of the outer periphery of the anti-rotation section.

[0011] Furthermore, a limiting ring is formed on the outer wall of the upper valve stem, the locking seat has a limiting groove facing the locking position, and the limiting ring is rotatably connected to the limiting groove; a handle is connected to the top of the upper valve stem.

[0012] Furthermore, a spring is provided on the outer sleeve of the lower valve stem, the upper end of the spring abutting against the abutment seat on the lower valve stem, and the lower end of the spring abutting against the inner cavity of the angle valve housing.

[0013] Furthermore, the lower valve stem has an annular groove at its lower part, and the sealing pad is annularly sleeved on the annular groove.

[0014] Furthermore, the angle valve housing is provided with one water outlet; or, the angle valve housing is provided with at least two water outlets.

[0015] Furthermore, the locking seat is threadedly connected to the mounting port of the angle valve housing.

[0016] Furthermore, the lower outer wall of the upper valve stem has an external thread, and the upper part of the lower valve stem has an internal thread seat. The external thread of the upper valve stem is threadedly connected to the internal thread seat of the lower valve stem.

[0017] With the above structure, the explosion-proof angle valve of this utility model has at least the following beneficial effects:

[0018] 1. The upper valve stem is threadedly connected to the lower valve stem, and the lower valve stem is slidably connected to the inlet. Rotating the upper valve stem allows the lower valve stem to move axially relative to the upper valve stem and the angle valve housing, thus opening or closing the inlet. This also allows for adjustment of the inlet's flow rate. If the locking seat ruptures and the angle valve housing, and the locking seat flies out, the lower and upper valve stems will move upwards together, and the sealing gasket will seal the inlet, maintaining a continuous seal under water pressure.

[0019] Second, the angle valve involved in this utility model has fewer components and a simpler structure, which greatly reduces production costs. The sliding connection between the lower valve stem and the water inlet is achieved by the anti-rotation section cooperating with the inner cavity of the water inlet. Only the shape needs to be changed, and no new components need to be added.

[0020] Third, the use of a central channel for water flow maintains a large flow rate and reduces pressure loss when water passes through the angle valve. The side channels correspond to the outer periphery of the anti-rotation section, allowing water to pass through without affecting the function of the anti-rotation section.

[0021] Fourth, the spring provides an upward restoring force to the lower valve stem, which, in conjunction with the water pressure, enables the lower valve stem to seal the water, while keeping the upper valve stem rotating at its upper limit position.

[0022] Compared with existing technologies, this invention uses a threaded connection between the upper and lower valve stems inside the angle valve housing. As the upper valve stem rotates, the lower valve stem moves axially to change the distance between the sealing pad and the inlet. This design is simple in structure, low in cost, and has better market competitiveness. Attached Figure Description

[0023] Figure 1 This is a cross-sectional structural diagram of an explosion-proof angle valve that relates to this utility model.

[0024] Figure 2 This is a three-dimensional sectional view of an explosion-proof angle valve.

[0025] Figure 3 This is a three-dimensional exploded view of the explosion-proof angle valve.

[0026] Figure 4 This is an exploded three-dimensional sectional view of the explosion-proof angle valve.

[0027] In the picture:

[0028] Angle valve body 1; Inlet 11; Outlet 12; Mounting port 13; Lower valve stem 2; Annular groove 21; Sealing pad 211; Water passage 22; Center passage 221; Side passage 222; Internal thread seat 23; Anti-rotation section 24; Abutment seat 25; Upper valve stem 3; External thread 31; Limiting ring 32; Handle 33; Locking seat 4; Limiting groove 41; Spring 5. Detailed Implementation

[0029] To further explain the technical solution of this utility model, the following detailed description is provided through specific embodiments.

[0030] like Figures 1 to 4 As shown, this utility model relates to an explosion-proof angle valve, which includes an angle valve housing 1, a lower valve stem 2, an upper valve stem 3, and a locking seat 4. The angle valve housing 1 has an inlet 11, an outlet 12, and a mounting port 13 for installing the locking seat 4. The locking seat 4 is installed in the mounting port 13. The upper valve stem 3 passes through the locking seat 4 from bottom to top and is rotatably connected to the locking seat 4. The lower valve stem 2 passes through the inlet 11 and is slidably connected to the inlet 11. A water-sealing pad 211 is provided at the lower part of the lower valve stem 2 outside the inlet 11. A water passage 22 is provided in the lower valve stem 2 above the water-sealing pad 211. The upper valve stem 3 is threadedly connected to the lower valve stem 2. The lower valve stem 2 moves up and down relative to the angle valve housing 1 as the upper valve stem 3 rotates. Specifically, the lower outer wall of the upper valve stem 3 has an external thread 31, and the upper part of the lower valve stem 2 has an internal thread seat 23. The external thread 31 of the upper valve stem 3 is threadedly connected to the internal thread seat 23 of the lower valve stem 2.

[0031] Thus, the explosion-proof angle valve of this utility model is connected by a threaded connection between the upper valve stem 3 and the lower valve stem 2, and a slidable connection between the lower valve stem 2 and the inlet 11. Rotating the upper valve stem 3 allows the lower valve stem 2 to move axially relative to the upper valve stem 3 and the angle valve housing 1, thereby opening or closing the inlet 11 via the sealing gasket 211. It can also regulate the flow rate through the inlet 11. Since the connection between the locking seat 4 and the angle valve housing 1 is a weak point in the angle valve housing 1, most breakages occur here. If the locking seat 4 and the angle valve housing 1 burst, and the locking seat 4 flies out, the lower valve stem 2 and the upper valve stem 3 can move upwards together, and the sealing gasket 211 seals the inlet 11, maintaining a continuous seal under water pressure.

[0032] Specifically, the lower valve stem 2 above the sealing pad 211 has an anti-rotation section 24, which cooperates with the inner wall of the cavity inside the inlet 11 to restrict the relative rotation between the lower valve stem 2 and the outlet 12. This utility model involves fewer angle valve components and a simpler structure, significantly reducing production costs. The sliding connection between the lower valve stem 2 and the inlet 11 is achieved through the cooperation of the anti-rotation section 24 with the inner cavity of the inlet 11; only a change in shape is needed, without adding new components. Furthermore, the outer periphery of the anti-rotation section 24 is square or hexagonal.

[0033] Preferably, the water passage 22 includes a central passage 221 formed at the center of the lower valve stem 2, and several side passages 222 connecting the central passage 221 and the outer wall of the lower valve stem 2; the side passages 222 are formed on the corresponding sides of the outer periphery of the anti-rotation section 24. Using the central passage 221 for water passage maintains a large flow rate and reduces pressure loss when water flows through the angle valve. The side passages 222 correspond to the outer periphery of the anti-rotation section 24, allowing water passage without affecting the function of the anti-rotation section 24. When the cross-sectional shape of the anti-rotation section 24 is square, four planes are formed on its outer periphery, and the side passages 222 are correspondingly positioned on these planes, making processing very convenient and without affecting the anti-rotation and sliding guiding functions of the anti-rotation section 24.

[0034] Preferably, a limiting ring 32 is formed on the outer wall of the upper valve stem 3, and the locking seat 4 has a limiting groove 41 facing the locking seat 4. The limiting ring 32 is rotatably connected to the limiting groove 41. A handle 33 is connected to the top of the upper valve stem 3. The upper valve stem 3, which is inserted into the locking seat 4 from bottom to top, is limited by the limiting ring 32 to restrict the maximum upward movement of the upper valve stem 3 relative to the locking seat 4.

[0035] Preferably, a spring 5 is sleeved on the lower valve stem 2. The upper end of the spring 5 abuts against the abutment seat 25 on the lower valve stem 2, and the lower end of the spring 5 abuts against the inner cavity of the angle valve housing 1. The spring 5 provides an upward restoring force to the lower valve stem 2, thus cooperating with water pressure to seal the lower valve stem 2, while keeping the upper valve stem 3 always rotating at its upper limit position.

[0036] Preferably, the lower valve stem 2 has an annular groove 21 at its lower part, and the sealing pad 211 is annularly sleeved on the annular groove 21. This facilitates the connection between the sealing pad 211 and the lower valve stem 2.

[0037] Preferably, the angle valve housing 1 is provided with one water outlet 12; or, the angle valve housing 1 is provided with at least two water outlets 12. The number of water outlets 12 on the angle valve housing 1 can be designed as needed to connect one or more water-using devices.

[0038] Preferably, the locking seat 4 is threadedly connected to the mounting port 13 of the angle valve housing 1. The threaded connection method is simple and easy to install.

[0039] Compared with the prior art, this utility model uses an upper valve stem 3 and a lower valve stem 2 connected by threads inside the angle valve housing 1. As the upper valve stem 3 rotates, the lower valve stem 2 moves axially to change the distance between the sealing pad 211 and the water inlet 11. This design is simple in structure, low in cost, and has better market competitiveness.

[0040] The above embodiments and figures are not intended to limit the product form and style of this utility model. Any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of this utility model.

Claims

1. An explosion-proof angle valve characterized by comprising: The valve includes an angle valve housing, a lower valve stem, an upper valve stem, and a locking seat. The angle valve housing has an inlet, an outlet, and a mounting opening for installing the locking seat. The locking seat is installed in the mounting opening. The upper valve stem passes through the locking seat from bottom to top and is rotatably connected to the locking seat. The lower valve stem passes through the inlet and is slidably connected to the inlet. A water-sealing pad is provided at the lower part of the lower valve stem outside the inlet. A water passage is provided in the lower valve stem above the water-sealing pad. The upper valve stem is threadedly connected to the lower valve stem. The lower valve stem moves up and down relative to the angle valve housing as the upper valve stem rotates.

2. An explosion-proof angle valve as defined in claim 1, characterized in that The lower valve stem above the sealing pad has an anti-rotation section, which cooperates with the inner wall of the inner cavity inside the water inlet to restrict the relative rotation between the lower valve stem and the water outlet.

3. An explosion-proof angle valve as defined in claim 2, characterized in that The outer periphery of the anti-rotation section is square or hexagonal.

4. A flameproof angle valve as claimed in claim 3, characterized in that The water passage includes a central passage formed at the center of the lower valve stem, and several side passages connecting the central passage and the outer wall of the lower valve stem; the side passages are formed on the corresponding sides of the outer periphery of the anti-rotation section.

5. A flameproof angle valve as defined in claim 1, wherein The outer wall of the upper valve stem forms a limiting ring, the locking seat has a limiting groove facing the locking position, and the limiting ring is rotatably connected to the limiting groove; a handle is connected to the top of the upper valve stem.

6. The explosion-proof angle valve as described in claim 1, characterized in that, The lower valve stem is fitted with a spring, the upper end of which abuts against the abutment seat on the lower valve stem, and the lower end of which abuts against the inner cavity of the angle valve housing.

7. An explosion-proof angle valve as defined in claim 1, wherein The lower valve stem has an annular groove at its lower part, and the sealing pad is annularly sleeved on the annular groove.

8. A flameproof angle valve as defined in claim 1, wherein The angle valve housing is provided with one water outlet; or, the angle valve housing is provided with at least two water outlets.

9. A flameproof angle valve as defined in claim 1, wherein The locking seat is threadedly connected to the mounting port of the angle valve housing.

10. A flameproof angle valve as defined in claim 1, wherein The lower outer wall of the upper valve stem has an external thread, and the upper part of the lower valve stem has an internal thread seat. The external thread of the upper valve stem is threadedly connected to the internal thread seat of the lower valve stem.

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