Quick response stop valve

Abstract

The utility model relates to the technical field of stop valves, in particular to a quick response stop valve which comprises a stop valve body and a water outlet valve pipe, one side of the stop valve body is fixedly connected with the water outlet valve pipe, one side of the stop valve body is fixedly connected with a water inlet valve pipe, the upper end of the stop valve body is fixedly connected with a hydraulic cylinder, and the bottom end of the hydraulic cylinder is fixedly connected with a second lug seat. The inner side of the second lug seat is rotatably connected with a spring telescopic rod, the lower end of the spring telescopic rod is rotatably connected with the second lug seat, the outer side of the lower end of the spring telescopic rod is fixedly connected with a limiting ring, the bottom end of the second lug seat is fixedly connected with a column check block, and the inner side of the stop valve body is fixedly connected with a water retaining hole ring. According to the device, the hydraulic cylinder and the thrust of water flow can be used for quickly plugging the valve, the valve can be buffered in the plugging process, a water outlet valve pipe and the valve are prevented from being damaged when the valve is quickly plugged, and meanwhile, normal use of a sealing concentric-square-shaped air bag of the valve can be ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of stop valves, in particular to a quick-response 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 core to force the sealing surface to prevent leakage. The closing speed of the existing fast stop valve is generally less than 0.5s.

[0003] The existing quick stop valve is not provided with a closing buffer mechanism. The too fast closing speed will cause huge impact and vibration when the valve disc and the valve seat come into contact at the moment of closing. Under the action of the impact force, the valve sealing surface is easily damaged, thereby affecting the service life of the valve. Therefore, a quick response stop valve is proposed to address the above problems. Utility Model Content

[0004] The utility model aims to provide a quick response stop valve to solve the problem that the existing quick stop valve is not provided with a closing buffer mechanism, and the excessively fast closing speed will cause a huge impact and vibration when the valve disc and the valve seat come into contact at the moment of closing. Under the action of the impact force, the valve sealing surface is easily damaged, thereby affecting the service life of the valve.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A quick response stop valve comprises a stop valve body and a water outlet valve pipe, one side of the stop valve body is fixedly connected to the water outlet valve pipe, one side of the stop valve body is fixedly connected to the water inlet valve pipe, the upper end of the stop valve body is fixedly connected to a hydraulic cylinder, the bottom end of the hydraulic cylinder is fixedly connected to a first ear seat, the inner side of the first ear seat is rotatably connected to a spring telescopic rod, the lower end of the spring telescopic rod is rotatably connected to a second ear seat, the outer side of the lower end of the spring telescopic rod is fixedly connected to a limiting ring, the bottom end of the second ear seat is fixedly connected to a column stopper, and the stop valve body A water retaining hole ring is fixedly connected on the inner side, a folding plate is fixedly connected to the inner side of the stop valve body, the folding plate is rotatably connected to the third ear seat, a valve is fixedly connected to the bottom end of the column stop block, an air flow channel is opened on the inner side of the water outlet valve pipe, a column sliding hole is opened on the inner side of the water outlet valve pipe, a multi-column slider is slidably connected to the inner side of the column sliding hole, a sealing ring is fixedly connected to the outer side of the multi-column slider, a reset spring is fixedly connected to one side of the multi-column slider, a constant pressure air hole is opened on the inner side of the water outlet valve pipe, and a sealed round-shaped air bag is fixedly connected to one side of the water outlet valve pipe.

[0007] As a further optimization of the present invention, the shut-off valve body, the water outlet valve pipe and the water inlet valve pipe are internally connected, the shape of the water retaining hole ring is a hollow cylinder, and a cylindrical groove is provided on the inner side of the rear end of the water outlet valve pipe.

[0008] As a further optimized content of the present invention, wherein: the lower end of the water retaining hole ring is fitted with the upper end of the column stop block, the column stop block moves inside the stop valve body, and the column stop block is cylindrical in shape.

[0009] As a further optimization of the present invention, the diameter of the column stopper is the same as the diameter of the middle end of the water outlet valve pipe, the shape of the valve is cylindrical, and the diameter of the valve is the same as the diameter of the cylindrical groove inside the rear end of the water outlet valve pipe.

[0010] As a further optimization of the present invention, a limited rotation hole is opened on the inner side of the first ear seat, a rotating rod is arranged on the upper end of the spring telescopic rod, the rotating rod of the spring telescopic rod rotates on the inner side of the limited rotation hole of the first ear seat, the second ear seat has the same shape as the first ear seat, and a rotating rod is arranged on the lower end of the spring telescopic rod.

[0011] As a further optimization of the present invention, the diameter of the valve is the same as the diameter of the sealed circular airbag, the inner side of the sealed circular airbag is hollow, the inner side of the sealed circular airbag is connected to the inner side of the airflow channel, the number of the airflow channels is several, and the airflow channels, column sliding holes and constant pressure air holes correspond one to one.

[0012] As a further optimization of the present invention, the multi-column slider is composed of two cylindrical ends, the outer front end of the multi-column slider is fitted with the inner side of the column sliding hole, the outer side of the sealing ring is fitted with the inner side of the column sliding hole, the front end of the return spring is fixedly connected to the front end of the column sliding hole, and the column sliding hole is opened in the shape of a cylinder.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] In the utility model, by arranging the hydraulic cylinder, the spring telescopic rod, the column block, the valve, the sealing return-shaped airbag, the multi-column slider, the sealing ring and the reset spring, the device can utilize the thrust of the hydraulic cylinder and the water flow to quickly seal the valve. During the sealing process, the valve can be buffered to prevent damage to the outlet valve pipe and the valve itself when the valve is quickly sealed, and at the same time, the normal use of the sealing return-shaped airbag of the valve can be ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the hydraulic cylinder of the utility model;

[0017] Figure 3 For this utility model Figure 2 A schematic diagram of the structure at A;

[0018] Figure 4 This is a schematic diagram of the column stopper structure of the utility model.

[0019] In the figure: 1. stop valve body; 2. water outlet valve pipe; 3. water inlet valve pipe; 4. hydraulic cylinder; 5. first ear seat; 6. spring telescopic rod; 7. limit ring; 8. second ear seat; 9. column stopper; 10. water retaining hole ring; 11. folding plate; 12. third ear seat; 13. valve; 14. air flow channel; 15. multi-column slider; 16. sealing ring; 17. reset spring; 18. constant pressure air hole; 19. column slide hole; 20. sealed circular air bag. DETAILED DESCRIPTION

[0020] 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.

[0021] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0022] See also Figure 1-4 , the utility model provides a technical solution:

[0023] A quick response stop valve comprises a stop valve body 1 and a water outlet valve pipe 2, one side of the stop valve body 1 is fixedly connected to the water outlet valve pipe 2, one side of the stop valve body 1 is fixedly connected to the water inlet valve pipe 3, the upper end of the stop valve body 1 is fixedly connected to a hydraulic cylinder 4, the bottom end of the hydraulic cylinder 4 is fixedly connected to a first ear seat 5, the inner side of the first ear seat 5 is rotatably connected to a spring telescopic rod 6, the lower end of the spring telescopic rod 6 is rotatably connected to a second ear seat 8, the outer side of the lower end of the spring telescopic rod 6 is fixedly connected to a limiting ring 7, the bottom end of the second ear seat 8 is fixedly connected to a column stopper 9, the inner side of the stop valve body 1 is fixedly connected to a stopper A water hole ring 10, a folding plate 11 is fixedly connected to the inner side of the stop valve body 1, the folding plate 11 is rotatably connected to the third ear seat 12, a valve 13 is fixedly connected to the bottom end of the column stopper 9, an air flow channel 14 is opened on the inner side of the water outlet valve pipe 2, a column sliding hole 19 is opened on the inner side of the water outlet valve pipe 2, a multi-column slider 15 is slidably connected to the inner side of the column sliding hole 19, a sealing ring 16 is fixedly connected to the outer side of the multi-column slider 15, a reset spring 17 is fixedly connected to one side of the multi-column slider 15, a constant pressure air hole 18 is opened on the inner side of the water outlet valve pipe 2, and a sealing round-shaped air bag 20 is fixedly connected to one side of the water outlet valve pipe 2.

[0024] As a further implementation of this scheme, the stop valve body 1, the outlet valve pipe 2 and the inlet valve pipe 3 are internally connected, the water retaining hole ring 10 is in the shape of a hollow cylinder, and a cylindrical groove is provided on the inner side of the rear end of the outlet valve pipe 2 to facilitate the water flow inside the inlet valve pipe 3 to enter the outlet valve pipe 2 from the inside of the stop valve body 1;

[0025] As a further implementation of this solution, the lower end of the water retaining hole ring 10 is fitted with the upper end of the column stop block 9, and the column stop block 9 is movable inside the stop valve body 1. The column stop block 9 is cylindrical in shape, which facilitates the column stop block 9 and the valve 13 to move inside the stop valve body 1. At the same time, after the water retaining hole ring 10 contacts the column stop block 9, the water flow is blocked;

[0026] As a further implementation of this solution, the diameter of the column stopper 9 is the same as the diameter of the middle end of the water outlet valve pipe 2, the valve 13 is cylindrical, and the diameter of the valve 13 is the same as the diameter of the cylindrical groove inside the rear end of the water outlet valve pipe 2, so that the valve 13 can be moved inside the rear end of the water outlet valve pipe 2, so that the valve 13 is directly fitted with the sealing round-shaped airbag 20 to achieve a sealing effect;

[0027] As a further implementation of the present invention, a limited rotation hole is provided inside the first ear seat 5, a rotation rod is provided at the upper end of the spring telescopic rod 6, and the rotation rod of the spring telescopic rod 6 rotates inside the limited rotation hole of the first ear seat 5. The second ear seat 8 has the same shape as the first ear seat 5, and a rotation rod is provided at the lower end of the spring telescopic rod 6. The spring telescopic rod 6 can drive the column stopper 9 to rotate, and the water flow can be used to quickly rotate the column stopper 9;

[0028] As a further implementation of the present scheme, the diameter of the valve 13 is the same as the diameter of the sealed round-shaped airbag 20, the inner side of the sealed round-shaped airbag 20 is hollow, the inner side of the sealed round-shaped airbag 20 is connected to the inner side of the airflow channel 14, the number of airflow channels 14 is several, the airflow channels 14, the column sliding holes 19 and the constant pressure air holes 18 correspond one to one, which has the effect of sealing the water outlet valve pipe 2 and the valve 13 through the sealed round-shaped airbag 20, and at the same time facilitates the gas inside the sealed round-shaped airbag 20 to enter the airflow channel 14;

[0029] As a further implementation scheme of the present scheme, the multi-column slider 15 is composed of two cylindrical ends, the outer front end of the multi-column slider 15 is in contact with the inner side of the column slide hole 19, the outer side of the sealing ring 16 is in contact with the inner side of the column slide hole 19, the front end of the reset spring 17 is fixedly connected to the front end of the column slide hole 19, and the cylindrical shape of the column slide hole 19 allows the gas to be discharged from the inside of the constant pressure air hole 18 to maintain the internal air pressure balance at the front end of the column slide hole 19.

[0030] Working process: when the device is in use, the external power supply is energized. When the valve 13 needs to be quickly blocked, the hydraulic cylinder 4 is started, and the lower end of the hydraulic cylinder 4 is extended. The hydraulic cylinder 4 pushes the first ear seat 5 to move downward, and the first ear seat 5 pushes the spring telescopic rod 6 to move. At the same time, the spring telescopic rod 6 - the first ear seat 5 and the second ear seat 8 are rotated about the axis, and the spring telescopic rod 6 is contracted at the same time. The spring telescopic rod 6 pushes the column stopper 9 to rotate. The column stopper 9 is rotatably connected with the folding plate 11 through the third ear seat 12. One end of the folding plate 11 protrudes inside the stop valve body 1, which can control the rotation angle of the column stopper 9. When the upper end surface of the column stopper 9 contacts the flowing water, under the impact of the water flow, the column stopper 9 rotates further quickly, thereby increasing the blocking speed of the column stopper 9 and the valve 13. The column stopper 9 drives the valve 13 to rotate, and the valve 13 contacts the outer side of the sealing round-shaped airbag 20. The sealing round-shaped airbag 20 has the effect of sealing the valve 13 and the outlet valve pipe 2. The spring retractable rod 6 contracts again under the push of the hydraulic cylinder 4. The fully contracted spring retractable rod 6 pushes the column stopper 9 and the valve 13 to rotate again. At this time, the contact and adhesion effect between the valve 13 and the sealed round-shaped airbag 20 can be improved. The valve 13 squeezes the sealed round-shaped airbag 20, and the sealed round-shaped airbag 20 is deformed. The gas inside the sealed round-shaped airbag 20 enters the rear end of the column slide hole 19 from the air flow channel 14. Under the thrust of the gas, the multi-column slider 15 slides inside the column slide hole 19. The multi-column slider 15 is sealed between the sealing ring 16 and the water outlet valve pipe 2. Under the elastic force of the return spring 17, the interior of the sealed round-shaped airbag 20 is kept inflated to improve the sealing degree between the sealed round-shaped airbag 20 and the valve 13. At the same time, the return spring 17 can have a buffering effect between the sealed round-shaped airbag 20 and the valve 13. The gas at the front end of the column slide hole 19 is discharged from the constant pressure air hole 18 to keep the internal air pressure balance at the front end of the column slide hole 19.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated 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 invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A quick response stop valve, comprising a stop valve body (1) and a water outlet valve pipe (2), characterized in that: One side of the stop valve body (1) is fixedly connected to a water outlet valve pipe (2), one side of the stop valve body (1) is fixedly connected to a water inlet valve pipe (3), the upper end of the stop valve body (1) is fixedly connected to a hydraulic cylinder (4), the lower end of the hydraulic cylinder (4) is fixedly connected to a first ear seat (5), the inner side of the first ear seat (5) is rotatably connected to a spring telescopic rod (6), the lower end of the spring telescopic rod (6) is rotatably connected to a second ear seat (8), the outer side of the lower end of the spring telescopic rod (6) is fixedly connected to a limiting ring (7), the lower end of the second ear seat (8) is fixedly connected to a column stopper (9), the inner side of the stop valve body (1) is fixedly connected to a water retaining hole ring (10), and the stop valve body (1) is fixedly connected to a water retaining hole ring (10). ) is fixedly connected to the inner side of a folding plate (11), the folding plate (11) is rotatably connected to a third ear seat (12), the bottom end of the column stopper (9) is fixedly connected to a valve (13), an air flow channel (14) is provided on the inner side of the water outlet valve pipe (2), a column sliding hole (19) is provided on the inner side of the water outlet valve pipe (2), a multi-column slider (15) is slidably connected to the inner side of the column sliding hole (19), a sealing ring (16) is fixedly connected to the outer side of the multi-column slider (15), a return spring (17) is fixedly connected to one side of the multi-column slider (15), a constant pressure air hole (18) is provided on the inner side of the water outlet valve pipe (2), and a sealing round-shaped air bag (20) is fixedly connected to one side of the water outlet valve pipe (2).

2. A quick response stop valve according to claim 1, characterized in that: The stop valve body (1), the water outlet valve pipe (2) and the water inlet valve pipe (3) are internally connected, the water retaining hole ring (10) is in the shape of a hollow cylinder, and a cylindrical groove is provided on the inner side of the rear end of the water outlet valve pipe (2).

3. A quick response stop valve according to claim 1, characterized in that: The lower end of the water retaining hole ring (10) is fitted with the upper end of the column stopper (9); the column stopper (9) moves inside the stop valve body (1); and the column stopper (9) is cylindrical in shape.

4. A quick response stop valve according to claim 1, characterized in that: The diameter of the column stopper (9) is the same as the diameter of the middle end of the water outlet valve pipe (2); the valve (13) is cylindrical in shape; the diameter of the valve (13) is the same as the diameter of the cylindrical groove inside the rear end of the water outlet valve pipe (2).

5. A quick response stop valve according to claim 1, characterized in that: A limited rotation hole is provided inside the first ear seat (5), a rotation rod is provided at the upper end of the spring telescopic rod (6), and the rotation rod of the spring telescopic rod (6) rotates inside the limited rotation hole of the first ear seat (5). The second ear seat (8) has the same shape as the first ear seat (5), and a rotation rod is provided at the lower end of the spring telescopic rod (6).

6. A quick response stop valve according to claim 1, characterized in that: The diameter of the valve (13) is the same as the diameter of the sealed circular airbag (20); the inner side of the sealed circular airbag (20) is hollow and connected to the inner side of the airflow channel (14); the number of the airflow channels (14) is several, and the airflow channels (14), the column sliding holes (19) and the constant pressure air holes (18) correspond to each other one by one.

7. A quick response stop valve according to claim 1, characterized in that: The multi-column slider (15) is composed of two cylindrical bodies at both ends. The outer front end of the multi-column slider (15) fits with the inner side of the column slide hole (19). The outer side of the sealing ring (16) fits with the inner side of the column slide hole (19). The front end of the return spring (17) is fixedly connected to the front end of the column slide hole (19). The column slide hole (19) is shaped like a cylindrical body.

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