Leak-proof stop valve

Abstract

The utility model discloses an anti-leakage stop valve which comprises a connecting pipe, a valve body and a valve body. A filtering mechanism is arranged on the lower side of the connecting pipe and comprises a filtering net, a water outlet and a water inlet, the water outlet and the water inlet are both formed in the lower side of the connecting pipe, and the lower sides of the water outlet and the water inlet are both located on the upper side of the interior of the filtering box; a flow guide mechanism is arranged in the connecting pipe and comprises a spherical valve, a direct flow pipeline and an L-shaped pipeline, and the direct flow pipeline and the L-shaped pipeline are both arranged in the spherical valve. According to the anti-leakage stop valve, impurities in the filter box are removed, the filter screen is prevented from being blocked, the flow speed is reduced, and the transmission efficiency is affected, the filter screen can filter liquid, the risk of leakage caused by the influence of the impurities on the valve in the cut-off process is prevented, the spherical valve is rotated, the directions of the spherical valve and the direct-flow pipeline are changed, and the leakage is prevented. And therefore, the liquid flowing path is changed, and the deslagging operation is convenient to adjust.

Description

Technical Field

[0001] The utility model relates to the technical field of stop valves, in particular to a leakage-proof stop valve. Background Art

[0002] The stop valve, also known as the gate valve, is a forced sealing valve. When the valve is closed, pressure must be applied to the valve disc to force the sealing surface to prevent leakage. Its basic structure consists of a valve body, a valve core, a sealing device and an operating device. The materials used can be selected according to the application and needs. The opening and closing of the valve can be achieved through manual, electric or pneumatic operation. The stop valve has a very reliable cut-off function. The change of its valve seat opening is directly proportional to the stroke of the valve disc. It is suitable for flow regulation. The stop valve should be checked frequently during use to prevent leakage accidents.

[0003] Referring to the Chinese patent authorization announcement number CN217328492U, the authorization announcement date is 2022.08.30, which discloses a leak-proof stop valve. The utility model enables the connecting sleeve assembly to seal the inside of the valve body and the valve seat through the sealing device, so that the entire valve has good sealing performance;

[0004] However, during the use of the utility model, the liquid in the pipeline will inevitably carry impurities. When these impurities are transported through the pipeline, when the stop valve cuts off the liquid, if they happen to come into contact with the impurities, the impurities will be crushed, but the stop valve will be irreversibly damaged, affecting its service life.

[0005] Therefore, we propose a leakage-proof stop valve to solve the above-mentioned problems. Utility Model Content

[0006] The purpose of the utility model is to provide a leak-proof stop valve to solve the problem raised in the above-mentioned background technology that during the use of the utility model, the liquid in the pipeline will inevitably carry impurities. When these impurities are transported through the pipeline, when the stop valve cuts off the liquid, if they happen to come into contact with the impurities, the impurities will be crushed, but irreversible damage will be caused to the stop valve, affecting the service life.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an anti-leakage stop valve, comprising: a connecting pipe;

[0008] Also includes:

[0009] A filter mechanism is provided on the lower side of the connecting pipe, wherein the filter mechanism includes a filter screen, a water outlet and a water inlet, the water outlet and the water inlet are both opened on the lower side of the connecting pipe, and the lower sides of the water outlet and the water inlet are both located on the upper side of the inner part of the filter box;

[0010] The connecting pipe is provided with a flow guiding mechanism inside, wherein the flow guiding mechanism comprises a spherical valve, a direct current pipeline and an L-shaped pipeline, wherein the direct current pipeline and the L-shaped pipeline are both opened inside the spherical valve, and the direct current pipeline and the L-shaped pipeline are vertically arranged.

[0011] Preferably, a lower connecting sleeve of the stop valve is fixedly connected to the upper side of the connecting pipe, and an upper connecting sleeve of the stop valve is arranged on the upper side of the lower connecting sleeve of the stop valve.

[0012] Preferably, a filter box is fixedly connected to the lower side of the connecting pipe, and a hinge is fixedly connected to the left side of the lower side of the filter box, and the filter box is rotatably connected to the box door through the hinge.

[0013] Preferably, a sealing gasket is fixedly connected to the upper side of the box door, and the upper side of the sealing gasket is tightly fitted to the lower side of the filter screen.

[0014] Preferably, the right side of the filter box is threadedly connected to the connecting stud, and the connecting stud is threadedly connected to the right side of the box door.

[0015] Preferably, a filter screen is fixedly connected to the lower side of the connecting pipe, and the filter screen is located inside the filter box.

[0016] Preferably, the outer side of the ball valve is tightly fitted with the inner side of the connecting pipe, and a rotating handle is fixedly connected to the front side of the ball valve.

[0017] Preferably, a limiting ring is fixedly connected to the rear of the outer side of the rotating handle, and the limiting ring is rotatably connected to the connecting pipe.

[0018] Compared with the prior art, the utility model has the following beneficial effects: the anti-leakage stop valve can remove impurities in the filter box to prevent the filter screen from being blocked, which will cause the flow rate to drop and affect the transmission efficiency; the filter screen can filter the liquid to prevent the impurities from affecting the valve during the cutoff, which will cause the risk of leakage; the ball valve can be rotated to change the direction of the ball valve and the direct current pipeline, thereby changing the path of the liquid flow and facilitating the adjustment of the slag removal operation;

[0019] 1. A filter box, box door and sealing pad are provided. By opening the box door, impurities in the filter box can be removed to prevent clogging of the filter screen, which will cause a decrease in flow rate and affect the transmission efficiency;

[0020] 2. A filter screen, a water outlet and a water inlet are provided. The liquid is transferred to the filter screen through the water inlet. After being filtered by the filter screen, it is transferred back to the connecting pipe through the water outlet to prevent the influence of impurities on the valve during cutoff, resulting in the risk of leakage;

[0021] 3. A ball valve, a direct current pipe and an L-shaped pipe are provided. By turning the handle, the ball valve rotates together, so that the directions of the ball valve and the direct current pipe change, thereby changing the flow path of the liquid, which is convenient for adjusting the slag removal operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the front view cutaway structure of the utility model;

[0023] Figure 2 This is a schematic diagram of the front view structure of the utility model;

[0024] Figure 3 This is a schematic diagram of the cross-sectional structure of the connecting pipe of the utility model;

[0025] Figure 4 This is a schematic diagram of the structure of a spherical valve of the utility model at an angle;

[0026] Figure 5 This is a schematic structural diagram of the spherical valve of the utility model from another angle.

[0027] In the figure: 1. connecting pipe; 2. lower connecting sleeve of stop valve; 3. upper connecting sleeve of stop valve; 4. filter box; 5. hinge; 6. box door; 7. sealing gasket; 8. connecting stud; 9. filter screen; 10. water outlet; 11. water inlet; 12. ball valve; 13. direct current pipeline; 14. L-shaped pipeline; 15. limit ring; 16. turning handle. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] See also Figure 1-5 The utility model provides a technical solution: a leak-proof stop valve, comprising: a connecting pipe 1, a stop valve lower connecting sleeve 2, a stop valve upper connecting sleeve 3, a filter box 4, a hinge 5, a box door 6, a sealing gasket 7, a connecting stud 8, a filter screen 9, a water outlet 10, a water inlet 11, a ball valve 12, a direct current pipeline 13, an L-shaped pipeline 14, a limit ring 15 and a rotating handle 16;

[0030] When using this anti-leakage stop valve, if Figure 1 , Figure 3 , Figure 4 and Figure 5As shown, the connecting pipe 1 is connected to the corresponding pipeline, and the handle 16 is rotated to adjust the ball valve 12 so that the direct current pipeline 13 in the ball valve 12 is perpendicular to the connecting pipe 1. The front side of the ball valve 12 is fixedly connected to the handle 16, and the outer rear of the handle 16 is fixedly connected to the limit ring 15. When the handle 16 is rotated, the limit ring 15 rotates in the connecting pipe 1, and a rubber pad is arranged on the outer side of the limit ring 15 to prevent liquid from leaking from the connection between the connecting pipe 1 and the handle 16, thereby enhancing the airtightness. At this time, the liquid in the connecting pipe 1 will flow from the filter box 4;

[0031] like Figure 1 As shown, first adjust the ball valve 12 on the left side of the connecting pipe 1 to make the L-shaped pipe 14 inside the ball valve 12 face the left side, and then adjust the ball valve 12 on the right side of the connecting pipe 1 to make the L-shaped pipe 14 inside the ball valve 12 face the right side, so that the liquid can flow from the inside of the filter box 4. The lower side of the connecting pipe 1 is provided with a water outlet 10 and a water inlet 11. When the liquid flows from the right side of the connecting pipe 1, the ball valve 12 rotates and the direct current pipe 13 is in a vertical state with the connecting pipe 1. The liquid flowing from the right side of the connecting pipe 1 will first pass through the ball valve 10 on the right side of the connecting pipe 1. shaped valve 12, and then flows from the L-shaped pipe 14 inside the ball valve 12 into the direct current pipe 13. Since the upper side of the direct current pipe 13 is tightly fitted with the upper inner side of the connecting pipe 1, the liquid will flow from the lower side of the direct current pipe 13 into the filter box 4, and then pass through the filter screen 9 and return to the ball valve 12 on the left side of the connecting pipe 1 from the water outlet 10, and then enter the direct current pipe 13. At this time, the L-shaped pipe 14 inside the ball valve 12 faces the left side, and the liquid will return to the connecting pipe 1 from the L-shaped pipe 14, reducing impurities as much as possible and directly flowing to the lower connecting sleeve 2 of the stop valve;

[0032] like Figure 1 As shown, the filter screen 9 is distributed in an array in the filter box 4, and the density of the mesh of the filter screen 9 decreases from right to left, which is convenient for fully filtering the liquid, and a sealing gasket 7 is fixedly connected to the upper side of the box door 6, which can prevent the liquid from flowing directly from the lower side of the filter screen 9, thereby protecting the stop valve. In addition, the lower connecting sleeve 2 of the stop valve is fixedly connected to the upper connecting sleeve 3 of the stop valve by screws, which is convenient for disassembling the stop valve for replacement and maintenance;

[0033] like Figure 1 and Figure 2As shown, after working for a period of time, the filter screen 9 needs to be cleaned, and the two handles 16 on the front side of the connecting pipe 1 are rotated in the opposite direction to make the direct current pipe 13 and the connecting pipe 1 in a horizontal state, and the L-shaped pipe 14 is directed upward. At this time, the liquid in the connecting pipe 1 will flow from the right side of the direct current pipe 13 to the ball valve 12. Because the L-shaped pipe 14 is directed upward instead of downward at this time, the liquid in the connecting pipe 1 will not flow from the filter box 4. The connecting stud 8 is rotated to make the lower side of the connecting stud 8 and the box 4. The door 6 is disconnected and is rotatably connected to the filter box 4 via the hinge 5. At this time, the door 6 rotates under the action of gravity, and then the impurities in the filter box 4 fall off. The filter screen 9 can be flushed to restore the door 6. A sealing gasket 7 is fixedly connected to the upper side of the door 6. The sealing gasket 7 can prevent liquid from leaking from the connection between the filter box 4 and the door 6, thereby playing a protective role. Finally, the ball valve 12 is adjusted so that the two L-shaped pipes 14 face outward, so that the liquid can flow through the filter screen 9 again for filtering and transmission.

[0034] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in the field. The standard parts used in the utility model can be purchased from the market, and special-shaped parts can be customized according to the records in the specification and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0035] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A leak-proof stop valve, comprising: Connecting pipe (1); It is characterized by further comprising: A filtering mechanism is provided on the lower side of the connecting pipe (1), wherein the filtering mechanism comprises a filtering net (9), a water outlet (10) and a water inlet (11), wherein the water outlet (10) and the water inlet (11) are both provided on the lower side of the connecting pipe (1), and the lower sides of the water outlet (10) and the water inlet (11) are both located on the upper side of the interior of the filtering box (4); A flow guiding mechanism is arranged inside the connecting pipe (1), wherein the flow guiding mechanism comprises a spherical valve (12), a direct current pipeline (13) and an L-shaped pipeline (14); the direct current pipeline (13) and the L-shaped pipeline (14) are both opened inside the spherical valve (12), and the direct current pipeline (13) and the L-shaped pipeline (14) are arranged vertically.

2. The anti-leakage stop valve according to claim 1, characterized in that: The upper side of the connecting pipe (1) is fixedly connected to a stop valve lower connecting sleeve (2), and the upper side of the stop valve lower connecting sleeve (2) is provided with a stop valve upper connecting sleeve (3).

3. The anti-leakage stop valve according to claim 1, characterized in that: The lower side of the connecting pipe (1) is fixedly connected to a filter box (4), and the lower left side of the filter box (4) is fixedly connected to a hinge (5), and the filter box (4) is rotatably connected to a box door (6) via the hinge (5).

4. The anti-leakage stop valve according to claim 3, characterized in that: A sealing gasket (7) is fixedly connected to the upper side of the box door (6), and the upper side of the sealing gasket (7) is tightly fitted to the lower side of the filter screen (9).

5. The anti-leakage stop valve according to claim 3, characterized in that: The right side of the filter box (4) is threadedly connected to the connecting stud (8), and the connecting stud (8) is threadedly connected to the right side of the box door (6).

6. The anti-leakage stop valve according to claim 1, characterized in that: A filter screen (9) is fixedly connected to the lower side of the connecting pipe (1), and the filter screen (9) is located inside the filter box (4).

7. The anti-leakage stop valve according to claim 1, characterized in that: The outer side of the ball valve (12) is tightly fitted to the inner side of the connecting pipe (1), and a rotating handle (16) is fixedly connected to the front side of the ball valve (12).

8. The anti-leakage stop valve according to claim 7, characterized in that: A limiting ring (15) is fixedly connected to the rear of the outer side of the rotating handle (16), and the limiting ring (15) is rotatably connected to the connecting pipe (1).

Images