Automatic reset check valve

Abstract

The utility model discloses an automatic reset check valve which comprises a valve body, connecting pipes are installed on the two sides of the valve body, a water inlet is formed in one side of each connecting pipe, an installing frame is fixedly installed in each connecting pipe, a sealing device is arranged on one side of each installing frame, and a water outlet is formed in the other side of each installing frame. And the outer wall of the valve body is fixedly connected with a mounting plate through two fixing rods, the mounting plate is connected with a reset device, and the output end of the reset device penetrates through the mounting plate and extends into the valve body. By arranging the sealing device and the resetting device, the phenomenon that after the water inlet is opened, due to the fact that the liquid backflow pressure is small, the spherical plug cannot abut against the water inlet immediately, and liquid flows back can be effectively prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of check valves, in particular to an automatic reset check valve. Background Art

[0002] A check valve is a valve whose opening and closing part is a circular valve disc and which relies on its own weight and medium pressure to produce a movement to block the backflow of the medium. It is an automatic valve and is also called a non-return valve, one-way valve, reflux valve or isolation valve. Check valves are often used as bottom valves of pumping devices to prevent water backflow.

[0003] The working principle of the check valve is to automatically open and close the valve disc based on the force of the medium's own flow to prevent the medium from flowing back. Although the existing device can prevent the liquid from flowing back into the valve body, when the pressure of the returning water source is low, some liquid can still flow back into the valve body through the pipeline. Therefore, it is necessary to redesign an automatic reset check valve to address the above problem. Utility Model Content

[0004] The purpose of the utility model is to solve the problems in the background technology and to propose an automatic reset check valve.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] An automatic reset check valve comprises a valve body, connecting pipes are installed on both sides of the valve body, a water inlet is opened on one side of each connecting pipe, a mounting bracket is fixedly installed in each connecting pipe, a sealing device is provided on one side of each mounting bracket, and the output ends of the two sealing devices are respectively abutted against the water inlets at corresponding positions, the outer wall of the valve body is fixedly connected to a mounting plate by two fixing rods, the mounting plate is connected to a reset device, and the output end of the reset device passes through the mounting plate and extends into the valve body.

[0007] Preferably, the sealing device includes a telescopic rod, and the telescopic rod is fixedly mounted on one side of the mounting frame. A spherical plug is fixedly mounted on the end of the telescopic rod away from the mounting frame, and the spherical plug is abutted against the water inlet at the corresponding position. A spring is installed between the spherical plug and the mounting frame, and the spring is sleeved on the outer wall of the telescopic rod.

[0008] Preferably, a sealing gasket is fixedly connected to the outer wall of each spherical plug, and the sealing gasket abuts against the water inlet at the corresponding position.

[0009] Preferably, the reset device includes a valve stem, and the valve stem is rotatably connected to one side of the mounting plate. One end of the valve stem passes through the outer wall of the valve body and extends into the valve body to be installed with two connecting rods, and each connecting rod is fixedly installed with a top block at one end away from the valve stem.

[0010] Preferably, a rotating wheel is fixedly mounted on one end of the valve stem away from the connecting rod, and a torsion spring is installed between the rotating wheel and the mounting plate.

[0011] Preferably, the center line of the spherical plug and the center line of the water inlet are on the same horizontal line.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. By setting up a sealing device, the sealing device can be used to prevent the phenomenon that after the water inlet is opened, the spherical plug cannot immediately contact the water inlet due to the low pressure of the reflux liquid, and the liquid enters the valve body through the water inlet.

[0014] 2. By setting up a reset device, the top block can be used to push open the spherical plug by rotating the reset device. The flow rate of the liquid can be controlled by the distance that the top block pushes out of the spherical plug. The runner and the valve stem can be reset by the torsion spring, thereby ensuring the normal reset of the spherical plug.

[0015] In summary, the present invention can effectively prevent the phenomenon of liquid reflux caused by the spherical plug not being able to immediately contact the water inlet due to the low liquid reflux pressure after the water inlet is opened by providing a sealing device and a reset device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural diagram of an automatic reset check valve proposed by the utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the valve body of an automatic reset check valve proposed by the utility model;

[0018] Figure 3 The present invention is a partial structural diagram of a sealing device of an automatic reset check valve proposed by the present invention.

[0019] In the figure: 1 valve body, 2 connecting pipe, 3 mounting plate, 4 runner, 5 valve stem, 6 torsion spring, 7 mounting frame, 8 fixing rod, 9 anti-slip groove, 10 top block, 11 connecting rod, 12 spring, 13 sealing gasket, 14 spherical plug, 15 telescopic rod, 16 water inlet. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0021] Reference Figure 1-3, an automatic reset check valve, including a valve body 1, with connecting pipes 2 installed on both sides of the valve body 1, a water inlet 16 opened on one side of each connecting pipe 2, a mounting bracket 7 fixedly installed in each connecting pipe 2, a sealing device provided on one side of each mounting bracket 7, and the output ends of the two sealing devices respectively abut against the water inlets 16 at corresponding positions, the outer wall of the valve body 1 is fixedly connected to a mounting plate 3 by two fixing rods 8, the mounting plate 3 is connected to a reset device, and the output end of the reset device passes through the mounting plate 3 and extends into the valve body 1.

[0022] The sealing device includes a telescopic rod 15, and the telescopic rod 15 is fixedly mounted on one side of the mounting frame 7. A spherical plug 14 is fixedly mounted on the end of the telescopic rod 15 away from the mounting frame 7, and the spherical plug 14 is abutted against the water inlet 16 at the corresponding position. A spring 12 is installed between the spherical plug 14 and the mounting frame 7, and the spring 12 is sleeved on the outer wall of the telescopic rod 15. The spring 12 can drive the spherical plug 14 and the telescopic rod 15 to reset.

[0023] A sealing gasket 13 is fixedly connected to the outer wall of each spherical plug 14 , and the sealing gasket 13 abuts against the water inlet 16 at the corresponding position. The sealing gasket 13 can further strengthen the sealing of the water inlet 16 .

[0024] The reset device includes a valve stem 5, and the valve stem 5 is rotatably connected to one side of the mounting plate 3. One end of the valve stem 5 passes through the outer wall of the valve body 1 and extends into the valve body 1 to be installed with two connecting rods 11. Each connecting rod 11 is fixedly installed with a top block 10 on the end away from the valve stem 5. The top block 10 and the spherical plug 14 are offset against each other to make the spherical plug 14 away from the water inlet 16, so that the liquid can flow between the two water inlets 16.

[0025] The end of the valve stem 5 away from the connecting rod 11 is fixedly mounted with a runner 4, and a torsion spring 6 is installed between the runner 4 and the mounting plate 3. When the runner 4 rotates, the torsion spring 6 can drive the runner 4 to reset.

[0026] The center line of the spherical plug 14 and the center line of the water inlet 16 are on the same horizontal line. It should be noted that this ensures that the spherical plug 14 can abut against the water inlet 16 to ensure the sealing of the water inlet 16.

[0027] When the present invention is in use, the valve stem 5 can be driven to rotate by rotating the runner 4. At this time, the torsion spring 6 will twist with the runner 4, and the valve stem 5 can drive the top block 10 to rotate through the two connecting rods 11. Then the raised end of the top block 10 will be against the spherical plug 14, and then the spherical plug 14 will move backward. The movement of the spherical plug 14 will drive the sealing gasket 13 to move synchronously. At the same time, the movement of the spherical plug 14 will compress the spring 12 and the telescopic rod 15 backward. The angle of the raised end of the top block 10 can be controlled by the valve stem 5, and the moving distance of the spherical plug 14 can be controlled, thereby controlling the flow of water through the water inlet 16. At this time, the water can flow through the two water inlets 16.

[0028] If the valve stem 5 needs to be reset, the rotation of the runner 4 can be stopped. At this time, the torsion spring 6 will be reset, and the reset of the torsion spring 6 can drive the runner 4 to reset synchronously, and then the runner 4 can drive the valve stem 5 to rotate and reset synchronously. At this time, the valve stem 5 drives the two top blocks 10 to rotate synchronously through the two connecting rods 11, and then the raised end of the top block 10 will move away from the spherical plug 14. When the spherical plug 14 no longer contacts the top block 10, the spring 12 will be reset, and the reset of the spring 12 can drive the spherical plug 14 to contact the water inlet 16 again. At the same time, the sealing gasket 13 will synchronize the spherical plug 14 to contact the water inlet 16. At the same time, the telescopic rod 15 can synchronize the spherical plug 14 to retract. When the spherical plug 14 contacts the water inlet 16, the spherical plug 14 can seal the water inlet 16.

[0029] Although the 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic reset check valve, comprising a valve body (1), characterized in that: Connecting pipes (2) are installed on both sides of the valve body (1), and a water inlet (16) is opened on one side of each connecting pipe (2). A mounting bracket (7) is fixedly installed in each connecting pipe (2), and a sealing device is provided on one side of each mounting bracket (7), and the output ends of the two sealing devices are respectively abutted against the water inlets (16) at corresponding positions. The outer wall of the valve body (1) is fixedly connected to a mounting plate (3) through two fixing rods (8), and the mounting plate (3) is connected to a reset device, and the output end of the reset device passes through the mounting plate (3) and extends into the valve body (1).

2. An automatic reset check valve according to claim 1, characterized in that: The sealing device comprises a telescopic rod (15), and the telescopic rod (15) is fixedly mounted on one side of the mounting frame (7); a spherical plug (14) is fixedly mounted on one end of the telescopic rod (15) away from the mounting frame (7), and the spherical plug (14) abuts against a water inlet (16) at a corresponding position; a spring (12) is installed between the spherical plug (14) and the mounting frame (7), and the spring (12) is sleeved on the outer wall of the telescopic rod (15).

3. The automatic reset check valve according to claim 2, characterized in that: A sealing gasket (13) is fixedly connected to the outer wall of each spherical plug (14), and the sealing gasket (13) abuts against the water inlet (16) at a corresponding position.

4. The automatic reset check valve according to claim 1, characterized in that: The reset device comprises a valve stem (5), and the valve stem (5) is rotatably connected to one side of the mounting plate (3), one end of the valve stem (5) penetrates the outer wall of the valve body (1) and extends into the valve body (1) to be installed with two connecting rods (11), and each connecting rod (11) is fixedly installed with a top block (10) at one end away from the valve stem (5).

5. The automatic reset check valve according to claim 4, characterized in that: A rotating wheel (4) is fixedly mounted on one end of the valve stem (5) away from the connecting rod (11), and a torsion spring (6) is mounted between the rotating wheel (4) and the mounting plate (3).

6. The automatic reset check valve according to claim 2, characterized in that: The center line of the spherical plug (14) and the center line of the water inlet (16) are on the same horizontal line.

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