Multi-stage hydraulic control valve structure

Abstract

The utility model discloses a multistage hydraulic control valve structure which comprises a control valve body, a filtering assembly is arranged above the control valve body, an adjusting assembly is arranged on the inner wall of the filtering assembly, and a connecting assembly is connected above the filtering assembly and the control valve body. The filtering assembly is arranged on the control valve body, granular impurities in oil can be intercepted and filtered to be prevented from entering the control valve, peculiar smell and part of harmful substances in the oil can be absorbed, and therefore abrasion of the impurities to components in the control valve is effectively reduced, and the service life is prolonged; according to the hydraulic control valve, oil leakage in the connecting or using process can be effectively prevented, the sealing performance and reliability of a hydraulic system are ensured, oil waste and environmental pollution are reduced, different adjusting requirements can be rapidly responded through the adjusting assembly arranged on the filtering assembly, the adjusting performance of the hydraulic control valve is improved, and therefore accurate adjusting of the oil flow is achieved.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic control valve technology, and more specifically, to a multi-stage hydraulic control valve structure. Background Technology

[0002] A multistage hydraulic control valve is a device used to precisely control the direction, pressure, and flow rate of hydraulic fluid in a hydraulic system. It is typically used in applications requiring high-precision control, such as industrial automation equipment and construction machinery.

[0003] However, the oil in multistage hydraulic control valves often contains impurities, which can lead to increased wear on internal components, reduced service life, and reduced system reliability and control accuracy. In addition, the connecting parts of multistage hydraulic control valves are prone to loosening due to vibration and other reasons during long-term use, which can lead to leakage, resulting in not only oil waste but also pollution of the working environment.

[0004] No effective solutions have yet been proposed to address the problems in the relevant technologies. Utility Model Content

[0005] In view of the problems in the related technologies, this utility model proposes a multi-stage hydraulic control valve structure to overcome the above-mentioned technical problems existing in the existing related technologies.

[0006] Therefore, the specific technical solution adopted by this utility model is as follows:

[0007] A multi-stage hydraulic control valve structure includes a control valve body, a filter assembly on top of the control valve body, the filter assembly including multiple inlets and outlets on top of the control valve body, an inlet pipe fixedly installed on the inner wall of the inlet, an outlet pipe fixedly installed on the inner wall of the outlet, an outlet pipe installed on the inner wall of the outlet, a filter box penetrating one end of the inlet pipe, multiple filter grooves opened on one side of the filter box, filter frames installed on the inner wall of the filter grooves, filter screens and activated carbon screens respectively installed on the inner wall of the filter frames, an adjustment assembly on the inner wall of the filter assembly, and a connection assembly connecting the filter assembly to the top of the control valve body.

[0008] Furthermore, in order to better regulate the flow of the multi-stage hydraulic control valve, the regulating component includes an regulating seat fixed to the inner wall of the filter box, an regulating cavity opened on the regulating seat, regulating plates installed on both sides of the inner wall of the regulating cavity, an regulating rod connected to one side of the regulating plate through a bearing, and an regulating handle connected to one end of the regulating rod through the regulating seat and the filter box.

[0009] Furthermore, in order to better connect the multi-stage hydraulic control valve, the connection assembly includes an input pipe that passes through the top of the filter box, a connecting cylinder that passes through the top of the input pipe and the outlet pipe, a limiting plate that is fixed to the inner wall of the connecting cylinder, a spring that is fixed to one end of the limiting plate, a sealing plate that is fixed to one end of the spring, a connector that contacts one side of the sealing plate, and a threaded connection between one end of the connector and the inner wall of the connecting cylinder.

[0010] Furthermore, in order to better improve the sealing performance of the connector joint, a sealing gasket is provided on one side of the connector, and one side of the sealing gasket contacts the inner wall of the connecting cylinder.

[0011] Furthermore, to further improve the anti-slip properties of the adjustment handle, an anti-slip sleeve is installed on the surface of the adjustment handle, which is compatible with the adjustment handle.

[0012] Furthermore, in order to better improve the tightness between the filter frame and the filter box, multiple fixing screws are threaded on the filter frame, and one end of the fixing screw is threaded to one side of the filter box.

[0013] Furthermore, in order to better install and fix the multi-stage hydraulic control valve, multiple mounting brackets are installed below the control valve body. The sides of the mounting brackets are threaded with mounting screws, one end of which is threaded to one side of the control valve body.

[0014] The beneficial effects of this utility model are as follows:

[0015] (1) By using the filter assembly installed in the control valve body, particulate impurities in the oil can be intercepted and filtered to prevent them from entering the control valve. It can also absorb odors and some harmful substances in the oil, thereby effectively reducing the wear of impurities on the internal components of the control valve and extending its service life. At the same time, the connection assembly installed between the filter assembly and the control valve body can effectively prevent oil leakage during connection or use, ensuring the sealing and reliability of the hydraulic system and reducing oil waste and environmental pollution.

[0016] (2) By setting the adjustment component in the filter component, different adjustment requirements can be responded to quickly, improving the adjustment performance of the hydraulic control valve, thereby achieving precise adjustment of oil flow. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1This is a schematic diagram of the main structure of a multi-stage hydraulic control valve according to an embodiment of the present utility model;

[0019] Figure 2 This is a schematic diagram of a filter assembly part of a multi-stage hydraulic control valve structure according to an embodiment of the present utility model;

[0020] Figure 3 This is a schematic diagram of the filter assembly and regulating assembly structure of a multi-stage hydraulic control valve according to an embodiment of the present utility model;

[0021] Figure 4 This is a schematic diagram of the connection component structure of a multi-stage hydraulic control valve structure according to an embodiment of the present utility model.

[0022] In the picture:

[0023] 1. Control valve body; 2. Filter assembly; 201. Inlet pipe; 202. Outlet pipe; 203. Filter box; 204. Filter frame; 205. Filter screen; 206. Activated carbon screen; 3. Adjustment assembly; 301. Adjustment seat; 302. Adjustment plate; 303. Adjustment rod; 304. Adjustment handle; 4. Connection assembly; 401. Input pipe; 402. Connecting cylinder; 403. Limiting plate; 404. Spring; 405. Sealing plate; 406. Connector; 5. Sealing gasket; 6. Anti-slip sleeve; 7. Fixing screw; 8. Mounting bracket; 9. Mounting screw. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example 1:

[0026] like Figures 1-4As shown, a multi-stage hydraulic control valve structure according to an embodiment of the present utility model includes a control valve body 1, which is a multi-stage control valve body 1. The multi-stage control valve body 1 is the prior art and will not be described in detail. A filter assembly 2 is provided above the control valve body 1. The filter assembly 2 includes multiple liquid inlets and liquid outlets provided above the control valve body 1. There are two liquid inlets and two liquid outlets. A liquid inlet pipe 201 is fixedly provided on the inner wall of the liquid inlet. A liquid outlet pipe 202 is fixedly provided on the inner wall of the liquid outlet. A liquid outlet pipe 202 is installed on the inner wall of the liquid outlet. One end of the liquid inlet pipe 201 passes through a filter box 203. Multiple filter grooves are opened on one side of the filter box 203. There are two filter grooves. A filter frame 204 is installed on the inner wall of the filter groove. A filter screen plate 205 and an activated carbon screen plate 206 are respectively installed on the inner wall of the filter frame 204.

[0027] The filter frame 204 is threaded with multiple fixing screws 7, two in number. One end of the fixing screw 7 is threaded to one side of the filter box 203. Multiple mounting brackets 8 are installed below the control valve body 1, two in number. The side of the mounting bracket 8 is threaded with mounting screws 9, one end of which is threaded to one side of the control valve body 1.

[0028] Example 2:

[0029] like Figures 1-4 As shown, according to an embodiment of the present utility model, a multi-stage hydraulic control valve structure is provided with an adjustment component 3 on the inner wall of the filter assembly 2. The adjustment component 3 includes an adjustment seat 301 fixed to the inner wall of the filter box 203. An adjustment cavity is provided on the adjustment seat 301. Adjustment plates 302 are installed on both sides of the inner wall of the adjustment cavity. An adjustment rod 303 is connected to one side of the adjustment plate 302 through a bearing. One end of the adjustment rod 303 passes through the adjustment seat 301 and the filter box 203 and is connected to an adjustment handle 304. An anti-slip sleeve 6 is installed on the surface of the adjustment handle 304. The anti-slip sleeve 6 is adapted to the adjustment handle 304.

[0030] A connecting assembly 4 is connected above the filter assembly 2 and the control valve body 1. The connecting assembly 4 includes an input pipe 401 that passes through the top of the filter box 203. A connecting cylinder 402 passes through the top of the input pipe 401 and the outlet pipe 202. A limiting plate 403 is fixed to the inner wall of the connecting cylinder 402. A spring 404 is fixed to one end of the limiting plate 403. A sealing plate 405 is fixed to one end of the spring 404. A connector 406 is in contact with one side of the sealing plate 405. A delivery pipe (not shown in the figure) is connected to one end of the connector 406 in actual use. One end of the connector 406 is threaded to the inner wall of the connecting cylinder 402. A sealing gasket 5 is provided on one side of the connector 406. One side of the sealing gasket 5 is in contact with the inner wall of the connecting cylinder 402.

[0031] To facilitate understanding of the above-mentioned technical solutions of this utility model, the working principle or operation method of this utility model in actual process will be described in detail below.

[0032] In summary, with the help of the above-mentioned technical solution of this utility model, when in use, the operator can fix the connector 406 to the connecting cylinder 402 by thread in advance, which is convenient for disassembly and maintenance. At the same time, one end of the connector 406 is in close contact with the sealing plate 405, which pushes the sealing plate 405 open. When the connector 406 is taken out from the connecting cylinder 402, the sealing plate 405 ensures the sealing performance and prevents leakage under the elastic force of the spring 404. After connection, the hydraulic oil flows into the filter box 203 from the delivery pipe at the inlet position.

[0033] Then, the operator drives the adjusting rod 303 to rotate by rotating the adjusting handle 304. The adjusting rod 303 drives the adjusting plate 302 to move in the adjusting cavity of the adjusting seat 301, changing the cross-sectional area of ​​the flow channel, thereby precisely controlling the flow rate or pressure of the hydraulic oil. Meanwhile, in the filter box 203, the liquid passes through the filter screen 205 in the filter frame 204 in sequence, intercepting large particulate impurities and the activated carbon screen 206, adsorbing tiny pollutants, and completing multi-stage filtration.

[0034] The filtered liquid enters the control valve body 1 through the inlet pipe 201, then flows into the connecting cylinder 402 and the connector 406 connected to the outlet pipe 202 through the outlet pipe 202, and flows out through the delivery pipe of the outlet pipe 202. The filter frame 204 is connected to the side wall of the filter box 203 by the fixing screw 7, which allows for quick disassembly and replacement of the filter media. The bottom of the control valve body 1 is fixed to the equipment base by the mounting bracket 8 and the mounting screw 9.

[0035] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A multi-stage hydraulic control valve structure, characterized by, The utility model provides a control valve body (1) is provided with the filter assembly (2) above, the filter assembly (2) includes a plurality of liquid inlet and liquid outlet that are provided with on the control valve body (1) top, the inner wall of liquid inlet is fixedly provided with liquid inlet pipe (201), the inner wall of liquid outlet is fixed with liquid outlet pipe (202), the inner wall of liquid outlet is installed with liquid outlet pipe (202), one end of liquid inlet pipe (201) is penetrated with filter box (203), a plurality of filter grooves are formed on one side of filter box (203), the inner wall of filter groove is installed with filter frame (204), the inner wall of filter frame (204) is installed with filter screen plate (205) respectively, activated carbon screen plate (206), the inner wall of filter assembly (2) is provided with adjusting assembly (3), and the upper side of filter assembly (2) is connected with connecting assembly (4) with control valve body (1).

2. The multi-stage hydraulic control valve structure according to claim 1, wherein The adjusting assembly (3) includes the adjusting seat (301) fixed in the inner wall of filter box (203), the adjusting cavity is formed on the adjusting seat (301), the adjusting plate (302) is installed on both sides of the inner wall of adjusting cavity, the adjusting rod (303) is connected on one side of adjusting plate (302) through bearing, and the adjusting handle (304) is connected on one end of adjusting rod (303) and penetrates adjusting seat (301) and filter box (203).

3. A multi-stage hydraulic control valve structure according to claim 2, characterized by The connecting assembly (4) includes the input pipe (401) penetrating above filter box (203), the connecting barrel (402) is penetrated on the upper side of input pipe (401) and liquid outlet pipe (202), the limiting plate (403) is fixed in the inner wall of connecting barrel (402), one end of limiting plate (403) is fixed with spring (404), one end of spring (404) is fixed with sealing plate (405), the connecting head (406) is contacted on one side of sealing plate (405), and one end of connecting head (406) is screwed with the inner wall of connecting barrel (402).

4. The multi-stage hydraulic control valve structure according to claim 3, wherein The connecting head (406) is provided with sealing gasket (5) on one side, and the inner wall of connecting barrel (402) is contacted on one side of sealing gasket (5).

5. A multi-stage hydraulic control valve structure according to claim 4, wherein The surface of adjusting handle (304) is installed with anti -skid cover (6), and the anti -skid cover (6) is matched with adjusting handle (304).

6. A multi-stage hydraulic control valve structure according to claim 5, wherein The filter frame (204) is screwed with a plurality of fixed screws (7), and one end of fixed screw (7) is screwed with one side of filter box (203).

7. A multi-stage hydraulic control valve structure according to claim 6, wherein The lower side of control valve body (1) is installed with a plurality of mounting racks (8), the side surface of mounting rack (8) is screwed with mounting screw (9), and one end of mounting screw (9) is screwed with one side of control valve body (1).

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