Self-operated balance valve

Abstract

The utility model discloses a self-operated balance valve which comprises a balance valve body, a water inlet flange is fixedly installed at the water inlet position of the balance valve body, a water outlet flange is fixedly installed at the water outlet position of the balance valve body, meanwhile, a water inlet retarding assembly is installed at the end of the water inlet flange, and the water inlet retarding assembly comprises a butt joint flange matched with the water inlet flange in size. According to the self-operated balance valve, high-speed and high-pressure flow enters the buffer pipe from the pipeline flange and can sequentially and correspondingly enter the upper retarding branch pipe and the lower retarding branch pipe, the fluid impacts the surfaces of the pistons in the upper retarding branch pipe and the lower retarding branch pipe, the two sets of pistons are stressed to transversely move, and the buffer spring is compressed; through compression deformation of the buffer spring, fluid about to be impacted on the balance valve body is retarded, so that the balance valve body is protected, and the service life of the balance valve body is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of balance valves, and particularly to a self-acting balance valve. Background Technique

[0002] A self-acting balance valve is a valve that uses the pressure change of the medium itself for self-regulation to maintain the flow balance of the controlled system; the self-acting balance valve does not require an external power supply, has a flow indication, can be adjusted online, and is suitable for the flow control of non-corrosive media such as heating and air-conditioning systems; it can automatically eliminate the hydraulic imbalance phenomenon caused by various factors in the water system, maintain the required flow of users, overcome "uneven heating and cooling", improve the room temperature qualification rate of heating and air-conditioning, and at the same time is an ideal supporting product for the "metering and charging" of heating and air-conditioning systems, and can achieve a certain degree of energy-saving effect;

[0003] When the self-acting balance valve is actually in use, when the fluid in the self-acting balance valve has a relatively high flow rate, it will generate an impact force on the internal structure of the valve body, which is likely to cause damage to the valve body and reduce the service life of the self-acting balance valve. To solve the above problems, after retrieval, the Chinese patent with the publication number CN217736474U discloses a self-acting balance valve with stable operation; it includes that when water flows through the flow retarder plate during use, the water is dispersed through the action of the first flow retardation hole and the second flow retardation hole, and the flow retardation function of the water is improved under the action of the wave shape of the second flow retardation hole. At the same time, the flow retarder plate contacts the water and drives the flow retarder rod and the flow retarder block to move in the flow retarder seat under the force, and the flow retarder block drives the flow retarder spring to expand and contract. Under the elastic action of the flow retarder spring, the impact force can be absorbed and weakened to improve the protection effect on the main body of the self-acting balance valve; although the flow retarder plate and the flow retarder spring can weaken the flow rate of the water flowing through the balance valve, it will greatly reduce the flow rate of the balance valve during use, easily cause the balance valve to be blocked by pressure, and greatly reduce the service life of the balance valve. Content of the Utility Model

[0004] The purpose of the utility model is to provide a self-acting balance valve to solve the defects mentioned in the above background technique.

[0005] To achieve the above purpose, a self-acting balance valve is provided, which includes a balance valve body. An inlet flange is fixedly installed at the water inlet of the balance valve body, and an outlet flange is fixedly installed at the water outlet of the balance valve body. At the same time, an inlet flow retardation component is installed at the end of the inlet flange. The inlet flow retardation component includes a docking flange adapted to the size of the inlet flange, and the end of the docking flange is fixedly welded to a buffer pipe. At the same time, a pipe flange is fixedly welded to the end of the buffer pipe away from the docking flange, and an upper flow retardation branch pipe is installed on the upper side of the buffer pipe, and a lower flow retardation branch pipe is installed on the lower side of the buffer pipe.

[0006] Preferably, the internal structures of the lower slow-down branch pipe and the upper slow-down branch pipe are the same, and the lower slow-down branch pipe and the upper slow-down branch pipe are symmetrical structures with respect to the central axis of the buffer pipe.

[0007] Preferably, the included angle between the upper slow-down branch pipe and the buffer pipe is 45°, and a piston is movably installed inside the upper slow-down branch pipe. The piston and the axial section of the upper slow-down branch pipe are concentric circle structures.

[0008] Preferably, the piston is cylindrical, and a sealing gasket is fixedly installed on the outer side of the piston. At the same time, the piston is movably arranged inside the upper slow-down branch pipe through the sealing gasket on the outer side.

[0009] Preferably, a guide rod is fixedly installed on the top of the piston, and the guide rod is movably inserted into the guide hole opened at the top of the upper slow-down branch pipe. At the same time, the cross section of the upper slow-down branch pipe is arranged in a "T" shape.

[0010] Preferably, a buffer spring is installed inside the upper slow-down branch pipe, and the buffer spring is sleeved inside the guide rod. At the same time, the buffer spring is arranged between the top plate of the upper slow-down branch pipe and the piston.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] 1. In the present utility model, the high-speed and high-pressure fluid flows into the inside of the buffer pipe from the pipe flange, and can sequentially enter the inside of the upper slow-down branch pipe and the lower slow-down branch pipe in turn. The fluid impacts on the surface of the pistons inside the upper slow-down branch pipe and the lower slow-down branch pipe. The two groups of pistons are forced to move horizontally and compress the buffer springs. Through the compression deformation of the buffer springs, the fluid about to impact on the balance valve body is slowed down, so as to protect the balance valve body and improve the service life of the balance valve body;

[0013] 2. In the present utility model, the upper slow-down branch pipe and the lower slow-down branch pipe are respectively installed on the upper and lower sides of the buffer pipe. In the way of flow splitting, deceleration and buffering by the two groups of branch pipes, the water impact on the inside of the balance valve body is reduced, and at the same time, the flow rate flowing inside the balance valve body will not be significantly reduced, and the situation of blockage inside the balance valve body can be avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a front view schematic diagram of the structure of the present utility model;

[0015] Figure 2 is Figure 1 the bottom view of

[0016] Figure 3 is Figure 1 the top view of

[0017] Figure 4Schematic diagram of the water inlet slow-down component.

[0018] Reference numerals in the figure: 1, balance valve body; 2, water inlet flange; 3, water inlet slow-down component; 31, docking flange; 32, buffer pipe; 33, lower slow-down branch pipe; 34, upper slow-down branch pipe; 341, piston; 342, gasket; 343, guide rod; 344, buffer spring; 35, pipe flange. Specific implementation mode

[0019] Please refer to Figures 1-4 , the present utility model provides a self-acting balance valve, which includes a balance valve body 1. An inlet water flange 2 is fixedly installed at the water inlet of the balance valve body 1, and an outlet water flange is fixedly installed at the water outlet of the balance valve body 1. At the same time, a water inlet slow-down component 3 is installed at the end of the inlet water flange 2. The water inlet slow-down component 3 includes a docking flange 31 adapted to the size of the inlet water flange 2, and the end of the docking flange 31 is fixedly welded to the buffer pipe 32. At the same time, a pipe flange 35 is fixedly welded to the end of the buffer pipe 32 away from the docking flange 31. And an upper slow-down branch pipe 34 is installed on the upper side of the buffer pipe 32, and a lower slow-down branch pipe 33 is installed on the lower side of the buffer pipe 32.

[0020] Working principle: When in use, first install this device on the pipeline that needs to be used. When the balance valve body 1 circulates the fluid, at this time, the high-speed and high-pressure fluid flows into the inside of the buffer pipe 32 from the pipe flange 35, and can sequentially enter the inside of the upper slow-down branch pipe 34 and the lower slow-down branch pipe 33 respectively. The fluid impacts on the surface of the piston 341 inside the upper slow-down branch pipe 34 and the lower slow-down branch pipe 33. The two pistons 341 are forced to move horizontally and compress the buffer spring 344. Through the compression deformation of the buffer spring 344, the fluid about to impact on the balance valve body 1 is slowed down, so as to protect the balance valve body 1 and improve the service life of the balance valve body 1; at the same time, the upper slow-down branch pipe 34 and the lower slow-down branch pipe 33 are respectively installed on the upper and lower sides of the buffer pipe 32. In the way of flow splitting, deceleration and buffering of the two branch pipes, the water flow impact on the inside of the balance valve body 1 is reduced, and at the same time, the flow rate flowing inside the balance valve body 1 will not be greatly reduced, and at the same time, the situation of blockage inside the balance valve body 1 can be avoided; when the piston 341 moves inside the upper slow-down branch pipe 34, the guide rod 343 on it is movably inserted into the guide hole opened at the top of the upper slow-down branch pipe 34, which can limit and guide the piston 341 during the movement process, ensure the stability of the piston 341 during movement and prevent it from tilting. At the same time, the piston 341 and the upper slow-down branch pipe 34 are sealed by a gasket 342 to prevent the fluid inside the buffer pipe 32 from overflowing from the gap between the piston 341 and the upper slow-down branch pipe 34. At the same time, the guide hole opened at the top of the upper slow-down branch pipe 34 can conduct exhaust work.

[0021] The internal structures of the lower retarder branch pipe 33 and the upper retarder branch pipe 34 are identical, and the lower retarder branch pipe 33 and the upper retarder branch pipe 34 are symmetric structures with respect to the central axis of the buffer pipe 32.

[0022] As a preferred embodiment, the included angle between the upper retarder branch pipe 34 and the buffer pipe 32 is 45°, and a piston 341 is movably installed inside the upper retarder branch pipe 34. The axial section of the piston 341 and the upper retarder branch pipe 34 is a concentric circle structure.

[0023] The piston 341 is cylindrical, and a sealing gasket 342 is fixedly installed on the outer side of the piston 341. At the same time, the piston 341 is movably arranged inside the upper retarder branch pipe 34 through the sealing gasket 342 on the outer side.

[0024] As a preferred embodiment, a guide rod 343 is fixedly installed on the top of the piston 341, and the guide rod 343 is movably inserted into the guide hole opened at the top of the upper retarder branch pipe 34. At the same time, the cross-section of the upper retarder branch pipe 34 is arranged in a "T" shape.

[0025] A buffer spring 344 is installed inside the upper retarder branch pipe 34. The buffer spring 344 is sleeved inside the guide rod 343, and the buffer spring 344 is arranged between the top plate of the upper retarder branch pipe 34 and the piston 341.

Claims

1. A self-acting balancing valve, comprising a balance valve body (1), characterized in that: An inlet flange (2) is fixedly installed at the water inlet of the balance valve body (1), and an outlet flange is fixedly installed at the water outlet of the balance valve body (1). At the same time, an inlet slow-down assembly (3) is installed at the end of the inlet flange (2). The inlet slow-down assembly (3) includes a docking flange (31) adapted to the size of the inlet flange (2). The end of the docking flange (31) is fixedly welded to the buffer pipe (32). At the same time, a pipe flange (35) is fixedly welded to the end of the buffer pipe (32) away from the docking flange (31). And an upper slow-down branch pipe (34) is installed on the upper side of the buffer pipe (32), and a lower slow-down branch pipe (33) is installed on the lower side of the buffer pipe (32).

2. The self-acting balancing valve according to claim 1, characterized in that: The internal structures of the lower slow-down branch pipe (33) and the upper slow-down branch pipe (34) are the same, and the lower slow-down branch pipe (33) and the upper slow-down branch pipe (34) are symmetric structures with respect to the central axis of the buffer pipe (32).

3. The self-operated balance valve according to claim 1, characterized in that: The included angle between the upper slow-down branch pipe (34) and the buffer pipe (32) is 45°. A piston (341) is movably installed inside the upper slow-down branch pipe (34). The axial section of the piston (341) and the upper slow-down branch pipe (34) is a concentric circle structure.

4. The self-acting balancing valve according to claim 3, characterized in that: The piston (341) is cylindrical, and a sealing gasket (342) is fixedly installed on the outer side of the piston (341). At the same time, the piston (341) is movably arranged inside the upper slow-down branch pipe (34) through the sealing gasket (342) on the outer side.

5. The self-acting balance valve according to claim 3, wherein: A guide rod (343) is fixedly installed at the top of the piston (341). The guide rod (343) is movably inserted into the guide hole opened at the top of the upper slow-down branch pipe (34). At the same time, the cross section of the upper slow-down branch pipe (34) is arranged in a "T" shape.

6. The self-acting balancing valve according to claim 5, characterized in that: A buffer spring (344) is installed inside the upper slow-down branch pipe (34). The buffer spring (344) is sleeved inside the guide rod (343). At the same time, the buffer spring (344) is arranged between the top plate of the upper slow-down branch pipe (34) and the piston (341).

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