Pneumatic control hydraulic valve

Abstract

The utility model relates to the technical field of pneumatic control hydraulic valves and discloses a pneumatic control hydraulic valve which comprises a valve body, a supporting plate is fixedly installed at the bottom of one end of the valve body, an air cylinder is fixedly installed on the upper surface of the supporting plate, one end of a piston rod of the air cylinder is fixedly connected with a limiting plate, and one side of the limiting plate is fixedly connected with a connecting rod. The air cylinder is used for controlling the valve element, in the actual use process, the air cylinder pushes the valve element to move in the valve body, the purpose of adjusting a flow channel is achieved, compared with a traditional mechanical transmission structure, the structure is higher in response speed, the valve element is not prone to falling off, and the service life of the valve element is prolonged. The power source of the piston rod in the air cylinder is provided by high-pressure air, and the piston rod can move quickly, so that the hysteresis problem of a mechanical mechanism is solved.

Description

Technical Field

[0001] This utility model relates to the field of pneumatic hydraulic valve technology, and in particular to a pneumatic hydraulic valve. Background Technology

[0002] A hydraulic valve is an automated component operated by pressurized oil. It is controlled by the pressurized oil of a pressure regulating valve and is usually used in combination with a solenoid pressure regulating valve. It can be used for remote control of the on / off of oil, gas and water pipeline systems in hydropower stations.

[0003] For example, CN218717826U discloses a hydraulic valve, including a valve body. A valve head and a valve tail are movably connected to both sides of the valve body, and the inner wall of the valve body is in contact with the outer walls of the valve head and valve tail. A set of positioning holes is provided at both ends of the valve body. Each set of positioning holes has four holes, which are arranged in a rectangular array about the central axis of the valve body. Positioning screws are threaded into the interior of both sets of positioning holes, and the positioning screws pass through the valve head and valve tail respectively. A valve core passes through the interior of the valve body. One end of the valve core extends into the interior of the valve head, and the other end extends into the interior of the valve tail. A valve stem is movably connected to the end of the valve core, and the valve stem is movably connected to the valve head. A telescopic spring is provided on the outer wall of both ends of the valve core.

[0004] However, in the existing technology, the valve core inside the hydraulic valve is mainly controlled by a mechanical structure. In actual operation, because the mechanical mechanism has a long transmission process, there will be a certain lag. Furthermore, the stability of the mechanical mechanism cannot be guaranteed during use. When the mechanical mechanism has structural errors, it will directly affect the normal use of the hydraulic valve. Utility Model Content

[0005] The purpose of this utility model is to solve the problem of lag caused by the long transmission process of mechanical mechanisms in the prior art, and to propose a pneumatically controlled hydraulic valve.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a pneumatically controlled hydraulic valve, comprising a valve body, a support plate fixedly installed at the bottom of one end of the valve body, a cylinder fixedly installed on the upper surface of the support plate, a limit plate fixedly connected to one end of the piston rod of the cylinder, a connecting rod fixedly connected to one side of the limit plate, a valve core slidably installed inside the valve body, an extension rod fixedly connected to one end of the valve core, and a fixed connection between one end of the extension rod and one end of the connecting rod.

[0007] Preferably, the valve body has a flow divider hole at the top, and the valve core is located at the inlet of the flow divider hole.

[0008] Preferably, a main channel is provided in the middle of the valve body, and the main channel is connected to the diversion hole through a cavity inside the valve body.

[0009] Preferably, the valve core is located between the main channel and the diversion hole, and the valve core is used to adjust the connection state between the main channel and the diversion hole.

[0010] Preferably, a receiving chamber is fixedly installed at the other end of the valve body, and one end of the valve core is slidably connected inside the receiving chamber.

[0011] Preferably, a partition block is fixedly installed at the junction of the valve body and the valve core, and the valve core passes through the partition block.

[0012] Preferably, a guide hole is provided at the junction of the separator block and the valve core.

[0013] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0014] 1. In this utility model, a cylinder is used to control the valve core. In actual use, the cylinder pushes the valve core to move inside the valve body to adjust the flow channel. Compared with the traditional mechanical transmission structure, this structure has a faster response speed. The piston rod in the cylinder is powered by high-pressure air, which can move quickly, thereby solving the lag problem of mechanical mechanism. At the same time, the stability of high-pressure air can be monitored in real time, and an alert can be issued immediately when air leakage occurs. It is easier to detect than mechanical mechanism.

[0015] 2. In this utility model, the movement path of the valve core and the valve core are determined by setting a partition block and a receiving chamber, which improves the stability of the valve core inside the valve body and ensures that the valve core will not deviate during movement, thus preventing channel leakage. Attached Figure Description

[0016] Figure 1 This utility model provides a three-dimensional structural diagram of one end of a pneumatically controlled hydraulic valve;

[0017] Figure 2 A schematic diagram of the planar structure of a pneumatically controlled hydraulic valve is provided for this utility model;

[0018] Figure 3 This utility model provides a three-dimensional structural diagram of the other end of a pneumatically controlled hydraulic valve;

[0019] Figure 4 This utility model provides a schematic diagram of the connection and structure of the cylinder and extension rod of a pneumatically controlled hydraulic valve.

[0020] Legend: 1. Valve body; 2. Diverter hole; 3. Main channel; 4. Reception chamber; 5. Support plate; 6. Cylinder; 7. Separator block; 8. Extension rod; 9. Limiting plate; 10. Connecting rod; 11. Guide hole; 12. Valve core. Detailed Implementation

[0021] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0022] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0023] Example 1: As Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, this utility model provides a pneumatically controlled hydraulic valve, including a valve body 1. A support plate 5 is fixedly installed at the bottom of one end of the valve body 1. A cylinder 6 is fixedly installed on the upper surface of the support plate 5. A limit plate 9 is fixedly connected to one end of the piston rod of the cylinder 6. A connecting rod 10 is fixedly connected to one side of the limit plate 9. A valve core 12 is slidably installed inside the valve body 1. An extension rod 8 is fixedly connected to one end of the valve core 12. One end of the extension rod 8 is fixedly connected to one end of the connecting rod 10.

[0024] A diversion hole 2 is provided at the top of the valve body 1, and the valve core 12 is located at the entrance of the diversion hole 2. A main channel 3 is provided in the middle of the valve body 1. The main channel 3 is connected to the diversion hole 2 through the cavity inside the valve body 1. The valve core 12 is located between the main channel 3 and the diversion hole 2. The valve core 12 is used to adjust the connection state between the main channel 3 and the diversion hole 2.

[0025] The specific settings and functions of this embodiment are described below. The valve core 12 is movably installed inside the valve body 1. The valve body 1 has a cavity inside to accommodate the valve core 12 and provide space for the flow of liquid. The main channel 3 is located on the front of the valve body 1. There are two diversion holes 2, which are symmetrically distributed on the top of the valve body 1. When in use, the valve core 12 controls one of the diversion holes 2 to connect with the main channel 3. The purpose of switching channels can be achieved by moving the valve core 12.

[0026] A support plate 5 is provided at the bottom of one end of the valve body 1 to determine the position of the cylinder 6. The cylinder 6 is connected to an external air source. When the control console sends a control signal, the cylinder 6 immediately pushes the piston rod to drive the valve core 12. A limit plate 9 is provided at one end of the piston rod to determine the maximum stroke of the piston rod. An extension rod 8 is provided at the end of the valve core 12 to connect with the connecting rod 10 on the side of the limit plate 9 to ensure that the original airtightness of the valve body 1 is not affected.

[0027] by Figure 2For example, when the valve core 12 moves to the left, the main channel 3 is connected to the left diversion hole 2, and when the valve core 12 moves to the right, the main channel 3 is connected to the right diversion hole 2.

[0028] Example 2: Figure 2 and Figure 4 As shown, a receiving chamber 4 is fixedly installed at the other end of the valve body 1, and one end of the valve core 12 is slidably connected inside the receiving chamber 4. A partition block 7 is fixedly installed at the junction of the valve body 1 and the valve core 12, and the valve core 12 passes through the partition block 7. A guide hole 11 is provided at the junction of the partition block 7 and the valve core 12.

[0029] The overall effect of this embodiment is that the receiving chamber 4 is used to receive the valve core 12, ensuring that there is enough space for the valve core 12 to move. A partition block 7 is provided at the end of the valve body 1 to contact the limiting plate 9. When the limiting plate 9 is attached to the partition block 7, the valve core 12 is at the leftmost end, and at this time the valve core 12 cannot continue to move to the left. The guide hole 11 is used to determine the movement path of the valve core 12, and a sealing ring is provided at the edge of the guide hole 11.

[0030] The usage and working principle of this device: The main channel 3 is located on the front of the valve body 1. There are two diversion holes 2, which are symmetrically distributed on the top of the valve body 1. When in use, the cylinder 6 is connected to the external air source. When the control console sends a control signal, the cylinder 6 immediately drives the valve core 12 through the piston rod. When the valve core 12 moves to the left, the main channel 3 is connected to the diversion hole 2 on the left. When the limit plate 9 is attached to the partition block 7, the valve core 12 is at the leftmost end, and at this time the valve core 12 cannot continue to move to the left.

[0031] When the valve core 12 moves to the right, the main channel 3 connects with the diversion hole 2 on the right. The purpose of switching channels can be achieved by moving the valve core 12. The cylinder 6 is installed on the support plate 5 at the bottom of one end of the valve body 1, and works with the guide hole 11 to determine the movement path of the valve core 12.

[0032] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A pneumatic-hydraulic valve comprising a valve body (1), characterized in that: The bottom of one end of the valve body (1) is fixedly provided with a supporting plate (5), the upper surface of the supporting plate (5) is fixedly provided with a cylinder (6), the piston rod of the cylinder (6) is fixedly connected with a limiting plate (9), one side of the limiting plate (9) is fixedly connected with a connecting rod (10), the inside of the valve body (1) is slidably provided with a valve core (12), one end of the valve core (12) is fixedly connected with an extension rod (8), and one end of the extension rod (8) is fixedly connected with one end of the connecting rod (10).

2. A gas controlled hydraulic valve according to claim 1, wherein: The top of the valve body (1) is provided with a shunt hole (2), and the valve core (12) is located at the inlet of the shunt hole (2).

3. A gas controlled hydraulic valve according to claim 2, wherein: The middle of the valve body (1) is provided with a main channel (3), and the main channel (3) is communicated with the shunt hole (2) through the cavity in the valve body (1).

4. A gas controlled hydraulic valve according to claim 3, wherein: The valve core (12) is located between the main channel (3) and the shunt hole (2), and the valve core (12) is used for adjusting the communication state of the main channel (3) and the shunt hole (2).

5. A pneumatic-hydraulic valve according to claim 1, characterized in that: The other end of the valve body (1) is fixedly provided with a containing chamber (4), and one end of the valve core (12) is slidably connected in the containing chamber (4).

6. A gas controlled hydraulic valve according to claim 5, wherein: The intersection of the valve body (1) and the valve core (12) is fixedly provided with a partition block (7), and the valve core (12) penetrates through the partition block (7).

7. A gas controlled hydraulic valve according to claim 6, wherein: The intersection of the partition block (7) and the valve core (12) is provided with a guide hole (11).

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