Valve body of pressure regulating valve

Abstract

The utility model relates to the technical field of pressure regulating valves, in particular to a pressure regulating valve body which comprises a valve body, a communicating pipe, a partition plate, a piston, an opening spring, a regulating spring, a regulating sliding plate, a regulating rod and a mesh sliding plate. A communicating pipe is arranged on the outer side of the valve body, a partition plate is arranged in the valve body, a piston is arranged on the inner side of the partition plate, an opening spring is arranged above the piston, an adjusting spring is arranged above the opening spring, an adjusting sliding plate is arranged above the adjusting spring, an adjusting rod is arranged above the adjusting sliding plate, and a mesh sliding plate is arranged at the bottom of the piston. By adding a buffer structure, the mesh sliding plate is added in the moving path of the piston, a damper structure is formed by using the resistance generated by buffer liquid contained in the valve body through the mesh sliding plate, and the movement of the piston is damped and buffered, so that the piston is prevented from moving violently and colliding with the partition plate when the water pressure change is large, and the service life of the piston is prolonged. Therefore, the stable operation of the valve body is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure regulating valves, in particular to a pressure regulating valve body. Background Art

[0002] A pressure regulating valve is an automatic control valve that can automatically adjust the valve opening according to the pressure change of the system or a preset pressure value to maintain the pressure stability in a pipeline or a container. This kind of valve usually does not require external energy, but uses the energy of the controlled medium itself to drive the valve to act.

[0003] When the water pressure changes greatly in the existing pressure regulating valve, the piston in the pressure regulating valve will move reciprocally quickly and collide with the pressure regulating valve, which easily damages the pressure regulating valve and the piston and affects the normal operation of the pressure regulating valve.

[0004] Therefore, in view of the situation that when the water pressure changes greatly in the existing pressure regulating valve, the rapid movement of the piston easily damages the pressure regulating valve and the piston and affects the normal operation of the pressure regulating valve, a pressure regulating valve body can be designed. A buffer structure is added to the pressure regulating valve to buffer the movement of the piston and ensure the long-term operation of the pressure regulating valve. Summary of the Utility Model

[0005] In order to overcome the problem that in most pressure regulating valves, when the water pressure changes greatly, the piston in the pressure regulating valve will move reciprocally quickly and collide with the pressure regulating valve, which easily damages the pressure regulating valve and the piston and affects the normal operation of the pressure regulating valve.

[0006] The technical solution of the utility model is: a pressure regulating valve body, which includes a valve body, a connecting pipe, a partition plate, a piston, an opening spring, an adjusting spring, an adjusting slide plate, an adjusting rod and a mesh slide plate; a connecting pipe is arranged on the outer side of the valve body, a partition plate is arranged inside the valve body, a piston is arranged inside the partition plate, an opening spring is arranged above the piston, an adjusting spring is arranged above the opening spring, an adjusting slide plate is arranged above the adjusting spring, an adjusting rod is arranged above the adjusting slide plate, and a mesh slide plate is arranged at the bottom of the piston.

[0007] Preferably, the inner space of the valve body is isolated into an inlet end and an outlet end by setting a partition plate. The partition plate channel is opened by driving the piston to move with the opening spring. The adjusting slide plate is pushed by the adjusting rod to compress the adjusting spring to adjust the movement sensitivity of the piston. The connecting pipe is connected to the valve body to play a role in pressure regulation. The rapid movement of the piston is buffered by the mesh slide plate.

[0008] Preferably, a signboard is provided on one side of the valve body, a first connector is provided above the inlet end of the valve body, and connecting flanges are provided at the inlet end and the outlet end of the valve body; the installation direction of the valve body is indicated by the signboard, the installation pipeline is conveniently connected through the connecting flanges, and the connecting pipe is connected through the first connector.

[0009] Preferably, an activity chamber is provided above the valve body, a threaded hole is provided above the activity chamber, a second connector is provided on one side of the activity chamber, and a buffer chamber is provided at the bottom of the valve body, and the buffer chamber is filled with damping oil; an activity space is established for the piston, the opening spring, the adjusting spring, the adjusting slide plate and the adjusting rod through the activity chamber, the connecting pipe is connected through the second connector, and an activity space is established for the mesh slide plate through the buffer chamber.

[0010] Preferably, a connecting rod is provided above the piston, an opening slide plate is provided above the connecting rod, the opening slide plate is located between the opening spring and the adjusting spring, the connecting rod penetrates through the bottom of the activity chamber, and the connecting rod and the opening slide plate are slidably connected to the activity chamber, and the diameter of the opening slide plate is equal to the inner diameter of the activity chamber; the force of the opening spring is conveniently received through the opening slide plate, and the piston is driven to move through the connecting rod.

[0011] Preferably, the adjusting rod penetrates through the top of the activity chamber, the adjusting rod is threadedly connected to the activity chamber, and a rotating wheel is provided above the adjusting rod; the adjusting rod is rotated through the rotating wheel, so that the adjusting rod moves to push the adjusting slide plate to move.

[0012] Preferably, the diameter of the adjusting slide plate is equal to the inner diameter of the activity chamber, and the adjusting slide plate is slidably connected to the activity chamber; through the sliding connection between the adjusting slide plate and the activity chamber, the adjusting slide plate and the activity chamber are conveniently hermetically slid.

[0013] Preferably, the diameter of the mesh slide plate is equal to the inner diameter of the activity chamber, the mesh slide plate is slidably connected to the activity chamber, a buffer rod is provided above the mesh slide plate, and the buffer rod is connected to the piston; the piston and the mesh slide plate are connected through the buffer rod, and the mesh slide plate and the activity chamber are hermetically slid driven by the movement of the piston.

[0014] The beneficial effects of the present utility model:

[0015] 1. Compared with the traditional pressure regulating valve, when the water pressure changes greatly, the piston in the pressure regulating valve will move reciprocally quickly and collide with the pressure regulating valve, which is easy to damage the pressure regulating valve and the piston, and affect the normal operation of the pressure regulating valve. By adding a buffer structure, a mesh slide plate is added to the movement path of the piston, and the resistance generated by the damping liquid contained in the valve body through the mesh slide plate is used to form a damper structure to damp and buffer the movement of the piston, preventing the piston from violently moving and colliding with the partition plate when the water pressure changes greatly, causing damage to the piston and the partition plate, and ensuring the stable operation of the valve body;

[0016] 2. When the pressure changes rapidly, the piston moves rapidly, driving the buffer rod to push the mesh slide plate to slide. The buffer chamber is filled with damping fluid, and the mesh slide plate is provided with multiple groups of fine micropores. When the mesh slide plate slides rapidly, the resistance of the damping fluid passing through the fine micropores will increase, buffering and decelerating the rapid movement of the piston, so as to solve the problem that most pressure regulating valves will cause the piston in the pressure regulating valve to move rapidly back and forth and collide with the pressure regulating valve when the water pressure changes greatly, which is likely to damage the pressure regulating valve and the piston and affect the normal operation of the pressure regulating valve;

[0017] 3. When the pressure regulating valve operates, the valve body is installed and fixed to the pipeline through the connecting flange. The indicator plate can indicate the installation direction of the valve body. The fluid enters the valve body from the inlet end of the valve body, the opening spring supports the opening slide plate, the piston is separated from the partition plate through the connecting rod, the fluid flows through the partition plate and flows out from the other end of the valve body. At the same time, the fluid flows into the connecting pipe from the first connection head and into the activity chamber from the second connection head. The change in water pressure can push the opening slide plate to move up and down, thereby driving the piston to move up and down, changing the flow rate of the fluid, and thus realizing the pressure inside the pressure regulating valve. The regulating wheel can be rotated to make the regulating rod rotate. Through the threaded connection between the regulating rod and the threaded hole, the regulating slide plate is pushed to slide up and down, and by compressing or releasing the regulating spring, the sliding sensitivity of the opening slide plate is adjusted. Description of the Drawings

[0018] Figure 1 Shown is a three-dimensional structural schematic diagram of a pressure regulating valve body of the present utility model;

[0019] Figure 2 Shown is a three-dimensional structural schematic diagram of the valve body of a pressure regulating valve body of the present utility model;

[0020] Figure 3 Shown is a three-dimensional structural schematic diagram of the piston of a pressure regulating valve body of the present utility model;

[0021] Figure 4 Shown is a three-dimensional structural schematic diagram of the mesh slide plate of a pressure regulating valve body of the present utility model.

[0022] Description of the Reference Numerals: 1. Valve body; 101. Indicator plate; 102. Connecting flange; 103. First connection head; 104. Second connection head; 105. Threaded hole; 106. Activity chamber; 107. Buffer chamber; 2. Connecting pipe; 3. Partition plate; 401. Piston; 402. Connecting rod; 403. Opening slide plate; 5. Opening spring; 6. Regulating spring; 7. Regulating slide plate; 801. Regulating rod; 802. Regulating wheel; 901. Buffer rod; 902. Mesh slide plate. Detailed Embodiments

[0023] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0024] Please refer to Figures 1-4 , the present utility model provides an embodiment: a pressure regulating valve body, including a valve body 1, a connecting pipe 2, a partition plate 3, a piston 401, an opening spring 5, an adjusting spring 6, an adjusting slide plate 7, an adjusting rod 801, and a mesh slide plate 902; a connecting pipe 2 is arranged on the outer side of the valve body 1, a partition plate 3 is arranged inside the valve body 1, a piston 401 is arranged inside the partition plate 3, an opening spring 5 is arranged above the piston 401, an adjusting spring 6 is arranged above the opening spring 5, an adjusting slide plate 7 is arranged above the adjusting spring 6, an adjusting rod 801 is arranged above the adjusting slide plate 7, and a mesh slide plate 902 is arranged at the bottom of the piston 401.

[0025] Please refer to Figures 1-2 , in this embodiment, a sign 101 is arranged on one side of the valve body 1, a first connector 103 is arranged above the inlet end of the valve body 1, and connecting flanges 102 are arranged at the inlet end and the outlet end of the valve body 1; the installation direction of the valve body 1 is displayed through the sign 101, the installation pipeline is conveniently connected through the connecting flange 102, the connecting pipe 2 is connected through the first connector 103, an activity chamber 106 is arranged above the valve body 1, a threaded hole 105 is opened above the activity chamber 106, a second connector 104 is arranged on one side of the activity chamber 106, and a buffer chamber 107 is arranged at the bottom of the valve body 1, and the buffer chamber 107 is filled with damping oil; an activity space is provided for the piston 401, the opening spring 5, the adjusting spring 6, the adjusting slide plate 7, and the adjusting rod 801 through the activity chamber 106, the connecting pipe 2 is connected through the second connector 104, and an activity space is provided for the mesh slide plate 902 through the buffer chamber 107.

[0026] Please refer to Figure 3 , in this embodiment, a connecting rod 402 is arranged above the piston 401, an opening slide plate 403 is arranged above the connecting rod 402, the opening slide plate 403 is located between the opening spring 5 and the adjusting spring 6, the connecting rod 402 penetrates the bottom of the activity chamber 106, the connecting rod 402 and the opening slide plate 403 are slidably connected to the activity chamber 106, and the diameter of the opening slide plate 403 is equal to the inner diameter of the activity chamber 106; the force of the opening spring 5 is conveniently received through the opening slide plate 403, and the piston 401 is driven to move through the connecting rod 402, the adjusting rod 801 penetrates the top of the activity chamber 106, the adjusting rod 801 is threadedly connected to the activity chamber 106, and a runner 802 is arranged above the adjusting rod 801; the adjusting rod 801 is rotated through the runner 802 to make the adjusting rod 801 move so as to push the adjusting slide plate 7 to move, the diameter of the adjusting slide plate 7 is equal to the inner diameter of the activity chamber 106, and the adjusting slide plate 7 is slidably connected to the activity chamber 106; through the sliding connection between the adjusting slide plate 7 and the activity chamber 106, the adjusting slide plate 7 and the activity chamber 106 are conveniently hermetically slid.

[0027] Please refer to Figure 4 Figure 4 , in this embodiment, the diameter of the mesh slide plate 902 is equal to the inner diameter of the activity room 106. The mesh slide plate 902 is slidably connected to the activity room 106. A buffer rod 901 is arranged above the mesh slide plate 902, and the buffer rod 901 is connected to the piston 401; the piston 401 and the mesh slide plate 902 are connected by the buffer rod 901, and the movement of the piston 401 drives the mesh slide plate 902 to slide sealingly with the activity room 106.

[0028] When the pressure regulating valve operates, the valve body 1 is installed and fixed to the pipeline through the connecting flange 102. The indicator plate 101 can indicate the installation direction of the valve body 1. The fluid enters the valve body 1 from the inlet end of the valve body 1. The opening spring 5 supports the opening slide plate 403. The piston 401 is separated from the partition plate 3 through the connecting rod 402. The fluid flows through the partition plate 3 and flows out from the other end of the valve body 1. At the same time, the fluid flows into the connecting pipe 2 from the first connector 103 and into the activity room 106 from the second connector 104. The change in water pressure can push the opening slide plate 403 to move up and down, thereby driving the piston 401 to move up and down, changing the flow rate of the fluid, and thus realizing the pressure inside the pressure regulating valve. The regulating wheel 802 can be rotated to rotate the regulating rod 801. Through the threaded connection between the regulating rod 801 and the threaded hole 105, the regulating slide plate 7 is pushed to slide up and down. By compressing or releasing the regulating spring 6, the sliding sensitivity of the opening slide plate 403 is adjusted;

[0029] When the pressure changes rapidly, the piston 401 moves rapidly, driving the buffer rod 901 to push the mesh slide plate 902 to slide. The buffer chamber 107 is filled with damping fluid. The mesh slide plate 902 is provided with multiple groups of fine micropores. When the mesh slide plate 902 slides rapidly, the resistance of the damping fluid passing through the fine micropores will increase, buffering and decelerating the rapid movement of the piston 401.

[0030] Through the above steps, the inner space of the valve body 1 is isolated into an inlet end and an outlet end by setting the partition plate 3. The opening spring 5 drives the piston 401 to move to open the channel of the partition plate 3. The regulating rod 801 pushes the regulating slide plate 7 to compress the regulating spring 6 to adjust the movement sensitivity of the piston 401. The connecting pipe 2 connects the valve body 1 to play a role in pressure regulation. The mesh slide plate 902 buffers the rapid movement of the piston 401.

[0031] The above has described in detail the embodiments of the present invention in conjunction with the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the gist of the present invention.

Claims

1. A pressure regulating valve body, comprising a valve body (1); characterized in that: It also includes a connecting pipe (2), a partition plate (3), a piston (401), an opening spring (5), an adjusting spring (6), an adjusting slide plate (7), an adjusting rod (801) and a mesh slide plate (902); a connecting pipe (2) is arranged on the outer side of the valve body (1), a partition plate (3) is arranged inside the valve body (1), a piston (401) is arranged on the inner side of the partition plate (3), an opening spring (5) is arranged above the piston (401), an adjusting spring (6) is arranged above the opening spring (5), an adjusting slide plate (7) is arranged above the adjusting spring (6), an adjusting rod (801) is arranged above the adjusting slide plate (7), and a mesh slide plate (902) is arranged at the bottom of the piston (401).

2. The pressure regulating valve body according to claim 1, characterized in that: A sign board (101) is arranged on one side of the valve body (1), a first connector (103) is arranged above the inlet end of the valve body (1), and connecting flanges (102) are arranged at the inlet end and the outlet end of the valve body (1).

3. A pressure regulating valve body according to claim 1, characterized in that: An activity chamber (106) is arranged above the valve body (1), a threaded hole (105) is opened above the activity chamber (106), a second connector (104) is arranged on one side of the activity chamber (106), and a buffer chamber (107) is arranged at the bottom of the valve body (1), and the buffer chamber (107) is filled with damping oil.

4. A pressure regulating valve body according to claim 3, characterized in that: A connecting rod (402) is arranged above the piston (401), an opening slide plate (403) is arranged above the connecting rod (402), the opening slide plate (403) is located between the opening spring (5) and the adjusting spring (6), the connecting rod (402) penetrates through the bottom of the activity chamber (106), the connecting rod (402) and the opening slide plate (403) are slidably connected to the activity chamber (106), and the diameter of the opening slide plate (403) is equal to the inner diameter of the activity chamber (106).

5. The body of a pressure regulating valve according to claim 3, wherein: The adjusting rod (801) penetrates through the top of the activity chamber (106), the adjusting rod (801) is threadedly connected to the activity chamber (106), and a runner (802) is arranged above the adjusting rod (801).

6. A pressure regulating valve body according to claim 4, wherein: The diameter of the adjusting slide plate (7) is equal to the inner diameter of the activity chamber (106), and the adjusting slide plate (7) is slidably connected to the activity chamber (106).

7. A pressure regulating valve body according to claim 4, characterized in that: The diameter of the mesh slide plate (902) is equal to the inner diameter of the activity chamber (106), the mesh slide plate (902) is slidably connected to the activity chamber (106), a buffer rod (901) is arranged above the mesh slide plate (902), and the buffer rod (901) is connected to the piston (401).

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