Anti-seepage stop valve

Abstract

The anti-seepage stop valve comprises a valve body, a round opening is formed in the valve body, a vertical pipe is installed in the round opening, a threaded groove is formed in the vertical pipe, a threaded rod is connected in the threaded groove in a sleeved mode, and a water inlet is formed in the valve body; a valve clack is installed on the threaded rod, a sealing gasket is installed on the valve clack, and the valve clack seals the lower portion of the water inlet. When an external medium enters from the left side of the valve body, the threaded rod is rotated to rotate in the threaded groove in the vertical pipe and move downwards at the moment, the threaded rod drives the sealing gasket on the valve clack to leave the annular groove, the water inlet is opened, and the medium flows out from the right side of the valve body; and when the valve is closed, the threaded rod drives the valve clack to move upwards, and the valve clack seals the lower portion of the water inlet and abuts against the lower portion of the valve body. Meanwhile, the sealing gasket is plugged into the annular groove to seal the water inlet, the pressure of the medium entering the valve body acts on the valve clack, and due to blocking of the valve body, the valve clack is prevented from leaving the water inlet, and the medium is prevented from seeping out.

Description

Technical Field

[0001] This patent relates to the technical field of stop valves, specifically an anti-seepage stop valve. Background Art

[0002] The stop valve, also known as the gate valve, is a forced sealing valve. Therefore, when the valve is closed, pressure must be applied to the valve disc to force the sealing surface to prevent leakage. When the medium enters the valve from below the valve disc, the resistance that the operating force needs to overcome is the friction between the valve stem and the packing and the thrust generated by the pressure of the medium. The force to close the valve is greater than the force to open the valve, so the diameter of the valve stem must be larger, otherwise the valve stem will bend. The opening and closing parts of the current stop valve are plug-shaped valve discs, and the sealing surface is a flat surface or a sea cone surface. The pressure of the entering medium is given to the bottom of the valve disc. The larger medium pressure will cause the valve disc to leave the entrance, causing the problem of medium leakage. Utility Model Content

[0003] The purpose of this patent is to provide an anti-seepage stop valve.

[0004] To achieve the above purpose, the present invention provides the following technical solutions: an anti-seepage stop valve, comprising a valve body, a round opening is provided on the valve body, a vertical pipe is installed in the round opening, a threaded groove is provided on the vertical pipe, a threaded rod is sleeved in the threaded groove, and a water inlet is provided in the valve body;

[0005] A valve flap is installed on the threaded rod, a sealing gasket is installed on the valve flap, the valve flap seals the lower part of the water inlet, an annular groove is opened in the valve body, and the sealing gasket is placed in the annular groove.

[0006] Preferably, a sealing plate is installed in the vertical pipe, a threaded hole is opened on the sealing plate, and the threaded rod is sleeved in the threaded hole;

[0007] A circular plate is placed in the vertical tube, a rubber pad is installed on the circular plate, a through hole is opened on the circular plate, a through hole is opened on the rubber pad, and the threaded rod is installed in the through hole.

[0008] Preferably, the valve flap is mounted on the threaded rod via a connecting structure;

[0009] The connection structure includes bolts and threaded ports;

[0010] The bolt is installed on the valve disc, the threaded opening is opened on the threaded rod, and the bolt is sleeved in the threaded opening.

[0011] Preferably, the valve body is provided with a take-in and put-out port, a thread is processed inside the take-in and put-out port, a threaded cover is sleeved inside the take-in and put-out port, and a straight groove is provided on the threaded cover.

[0012] Preferably, a flange is installed on the valve body, the number of the flanges is two, and the flanges are symmetrically distributed on both sides with the center line of the valve body as the center;

[0013] Each of the flanges is provided with mounting holes, the number of the mounting holes is not less than four, and the mounting holes are distributed in an annular shape and at equal distances on the flange.

[0014] Preferably, a handle is installed on the threaded rod.

[0015] Compared with the prior art, the beneficial effects of this patent are: the anti-seepage stop valve has the following advantages compared with the traditional technology:

[0016] 1. External media enters through the left side of the valve body. At this time, the threaded rod rotates in the threaded groove on the vertical pipe and moves downward. The threaded rod drives the sealing gasket on the valve disc to leave the annular groove, so that the water inlet is opened, and the medium flows out through the right side of the valve body. When closing, the threaded rod drives the valve disc to move upward, and the valve disc seals the bottom of the water inlet and presses against the bottom of the valve body. At the same time, the sealing gasket is inserted into the annular groove to seal the water inlet. The pressure of the medium entering the valve body acts on the valve disc. Due to the obstruction of the valve body, the valve disc is prevented from leaving the water inlet, preventing the medium from leaking out;

[0017] 2. When the threaded rod moves downward in the valve body to open the water inlet, the threaded rod rotates and moves downward in the threaded hole on the sealing plate. At the same time, the threaded rod drives the rubber pad to move downward through the circular plate. The rubber pad presses on the sealing plate to prevent the medium from leaking upward.

[0018] 3. When it is found that the valve body is not sealed tightly and the medium stops flowing, you can use an external tool to reach into the slot to unscrew the threaded cover from the access port on the valve body. At this time, you can unscrew the bolts on the valve disc from the threaded port on the threaded rod, take out the valve disc, and replace the sealing gasket on the valve disc. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of this patent;

[0020] Figure 2 It is a schematic diagram of the structure of the cross-sectional view of this patent;

[0021] Figure 3 This is a schematic diagram of the structure of the valve disc, sealing gasket and bolts of this patent;

[0022] Figure 4 This is a schematic diagram of the structure of the circular plate, rubber pad and through hole of this patent.

[0023] In the figure: 1, valve body, 2, flange, 3, mounting hole, 4, connection structure, 401, bolt, 402, threaded mouth, 5, round mouth, 6, vertical pipe, 7, threaded groove, 8, threaded rod, 9, handle, 10, water inlet, 11, valve disc, 12, sealing gasket, 13, annular groove, 14, sealing plate, 15, threaded hole, 16, round plate, 17, rubber gasket, 18, through hole, 19, access port, 20, threaded cover, 21, slot. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of this patent to clearly and completely describe the technical solutions in the embodiments of this patent. Obviously, the described embodiments are only part of the embodiments of this patent, not all of them. Based on the embodiments in this patent, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this patent.

[0025] See also Figure 1-4 This patent provides a technical solution: an anti-seepage stop valve, including a valve body 1, a round opening 5 is opened on the valve body 1, a vertical pipe 6 is installed in the round opening 5, the vertical pipe 6 is connected to the valve body 1, a threaded groove 7 is opened on the vertical pipe 6, a threaded rod 8 is sleeved in the threaded groove 7, and a water inlet 10 is opened in the valve body 1;

[0026] A valve disc 11 is installed on the threaded rod 8, and a sealing gasket 12 is installed on the valve disc 11. The sealing gasket 12 is made of fluororubber. The valve disc 11 seals the lower part of the water inlet 10. An annular groove 13 is opened in the valve body 1. The sealing gasket 12 is placed in the annular groove 13, and the sealing gasket 12 is tightly fitted with the annular groove 13.

[0027] The external medium enters through the left side of the valve body 1. At this time, the threaded rod 8 is rotated in the threaded groove 7 on the vertical pipe 6 and moves downward. The threaded rod 8 drives the sealing gasket 12 on the valve disc 11 to leave the annular groove 13, so that the water inlet 10 is opened, and the medium flows out through the right side of the valve body 1. When closing, the threaded rod 8 drives the valve disc 11 to move upward, and the valve disc 11 seals the bottom of the water inlet 10 and presses against the bottom of the valve body 1. At the same time, the sealing gasket 12 is inserted into the annular groove 13 to seal the water inlet 10, and the medium pressure entering the valve body 1 acts on the valve disc 11. Due to the obstruction of the valve body 1, the valve disc 11 is prevented from leaving the water inlet 10 to prevent the medium from seeping out.

[0028] A sealing plate 14 is installed in the vertical pipe 6, and a threaded hole 15 is opened on the sealing plate 14, and the threaded rod 8 is sleeved in the threaded hole 15;

[0029] A circular plate 16 is placed in the vertical pipe 6, and a rubber pad 17 is installed on the circular plate 16. The rubber pad 17 is made of fluororubber. A through hole 18 is opened on the circular plate 16, and a through hole 18 is opened in the middle of the rubber pad 17. The threaded rod 8 is installed in the through hole 18, and the threaded rod 8 is connected to the through hole 18 without processing threads. When the threaded rod 8 moves downward in the valve body 1 to open the water inlet 10, the threaded rod 8 rotates and moves downward in the threaded hole 15 on the sealing plate 14. At the same time, the threaded rod 8 drives the rubber pad 17 to move downward through the circular plate 16, and the rubber pad 17 is pressed on the sealing plate 14 to prevent the medium from seeping upward.

[0030] The valve flap 11 is mounted on the threaded rod 8 through the connecting structure 4;

[0031] The connection structure 4 includes a bolt 401 and a threaded opening 402;

[0032] The bolt 401 is installed on the valve disc 11, and the threaded opening 402 is provided on the threaded rod 8. The bolt 401 is sleeved in the threaded opening 402. The valve body 1 is provided with a take-in and release opening 19, and a thread is processed in the take-in and release opening 19. A threaded cover 20 is sleeved in the take-in and release opening 19, and a slot 21 is provided on the threaded cover 20. When it is found that the valve body 1 is not sealed tightly, the medium stops, and an external tool can be used to reach into the slot 21 to unscrew the threaded cover 20 from the take-in and release opening 19 on the valve body 1. At this time, the bolt 401 on the valve disc 11 can be unscrewed from the threaded opening 402 on the threaded rod 8, the valve disc 11 can be taken out, and the sealing gasket 12 on the valve disc 11 can be replaced.

[0033] The valve body 1 is provided with two flanges 2, which are symmetrically distributed on both sides with the center line of the valve body 1 as the center.

[0034] Each flange 2 is provided with a mounting hole 3, the number of which is not less than four, and the mounting holes 3 are equidistantly distributed in a circular shape on the flange 2. The valve body 1 can be installed between pipes through the mounting holes 3 on the flange 2. A handle 9 is installed on the threaded rod 8, and turning the handle 9 drives the threaded rod 9 to rotate.

[0035] When using the anti-seepage stop valve, firstly, the valve body 1 can be installed between the pipelines through the installation hole 3 on the flange 2 manually. When it is necessary to transport the medium, the handle 9 is turned to drive the threaded rod 8 to rotate in the threaded groove 7 on the vertical pipe 6 and move downward. The threaded rod 8 drives the sealing gasket 12 on the valve disc 11 to leave the annular groove 13, so that the water inlet 10 is opened. At this time, the medium in the pipeline enters through the left side of the valve body 1, and the medium flows out through the right side of the valve body 1. When closing, the threaded rod 8 drives the valve disc 11 to move upward, and the valve disc 11 seals the bottom of the water inlet 10 and presses against the bottom of the valve body 1. At the same time, the sealing gasket 12 is inserted into the annular groove 13 to seal the water inlet 10, and the medium pressure entering the valve body 1 acts on the valve disc 11. The valve body 1 is blocked to prevent the valve disc 11 from leaving the water inlet 10 and prevent the medium from seeping out. When the valve disc 11 moves downward to open the water inlet 10, the threaded rod 8 rotates and moves downward in the threaded hole 15 on the sealing plate 14. At the same time, the threaded rod 8 drives the rubber pad 17 to move downward through the circular plate 16. The rubber pad 17 is pressed on the sealing plate 14 to prevent the medium from seeping upward. When it is found that the valve body 1 is not sealed tightly, the medium stops, and an external tool can be used to reach into the slot 21 to unscrew the threaded cover 20 from the access port 19 on the valve body 1. At this time, the bolt 401 on the valve disc 11 can be unscrewed from the threaded port 402 on the threaded rod 8, the valve disc 11 can be taken out, and the sealing pad 12 on the valve disc 11 can be replaced.

[0036] Although the embodiments of the present patent have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present patent, and the scope of the present patent is defined by the appended claims and their equivalents.

Claims

1. An anti-seepage stop valve, comprising a valve body (1), characterized in that: The valve body (1) is provided with a circular opening (5), a vertical pipe (6) is installed in the circular opening (5), a threaded groove (7) is provided on the vertical pipe (6), a threaded rod (8) is sleeved in the threaded groove (7), and a water inlet (10) is provided in the valve body (1); A valve flap (11) is installed on the threaded rod (8), a sealing gasket (12) is installed on the valve flap (11), the valve flap (11) seals the lower part of the water inlet (10), an annular groove (13) is provided in the valve body (1), and the sealing gasket (12) is placed in the annular groove (13).

2. The anti-seepage stop valve according to claim 1, characterized in that: A sealing plate (14) is installed in the vertical pipe (6), a threaded hole (15) is provided on the sealing plate (14), and the threaded rod (8) is sleeved in the threaded hole (15); A circular plate (16) is placed in the vertical pipe (6), a rubber pad (17) is installed on the circular plate (16), a through hole (18) is opened on the circular plate (16), a through hole (18) is opened on the rubber pad (17), and the threaded rod (8) is installed in the through hole (18).

3. The anti-seepage stop valve according to claim 1, characterized in that: The valve flap (11) is mounted on the threaded rod (8) via a connecting structure (4); The connection structure (4) comprises a bolt (401) and a threaded opening (402); The bolt (401) is installed on the valve disc (11), the threaded opening (402) is opened on the threaded rod (8), and the bolt (401) is sleeved in the threaded opening (402).

4. The anti-seepage stop valve according to claim 1, characterized in that: The valve body (1) is provided with a take-in / take-out opening (19), a thread is processed inside the take-in / take-out opening (19), a threaded cover (20) is sleeved inside the take-in / take-out opening (19), and a straight groove (21) is provided on the threaded cover (20).

5. The anti-seepage stop valve according to claim 1, characterized in that: The valve body (1) is provided with a flange (2), the number of the flanges (2) being two, and the flanges (2) being symmetrically distributed on both sides with the center line of the valve body (1) as the center; Each of the flanges (2) is provided with a mounting hole (3), the number of the mounting holes (3) is not less than four, and the mounting holes (3) are distributed in an annular shape and at equal distances on the flange (2).

6. The anti-seepage stop valve according to claim 1, characterized in that: A handle (9) is mounted on the threaded rod (8).

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