An electronically controlled hydraulic servo valve

Abstract

The utility model discloses an electronically controlled hydraulic servo valve, which relates to the technical field of servo valves, comprising an electronically controlled hydraulic servo valve, which is used for controlling flow and pressure; an oil inlet pipe, which is symmetrically arranged on the electronically controlled hydraulic servo valve, and is used for the introduction of oil; a connecting component, which is arranged on the oil inlet pipe, and is used for the connection and positioning of the pipeline; an oil guide pipe, which is arranged at the liquid inlet end of the connecting component, and plays a role of guiding flow; a filtering component, which is arranged at the liquid inlet end of the oil guide pipe, and is used for filtering oil; an oil outlet pipe, which is arranged on the electronically controlled hydraulic servo valve, and is used for regulating the output of the rear oil. In the utility model, the connecting component, the oil guide pipe, the filtering component and the connecting pipe are arranged to avoid clogging of the filter plate during long-term use, and the scraped impurities will enter the collecting bucket for collection, and the two positioning clamps move mutually in the positioning frame and approach each other to clamp the pipe wall of the oil guide pipe, so that the oil guide pipe can be positioned.

Description

Technical Field

[0001] The utility model relates to the technical field of servo valves, in particular to an electronically controlled hydraulic servo valve. Background Art

[0002] The electronically controlled hydraulic servo valve is a control valve that converts electrical signals into hydraulic energy. It controls the oil flow and pressure in the hydraulic system by receiving electronic control signals, thereby achieving precise control of the working mechanism.

[0003] At present, when the oil is regulated by an electric-controlled hydraulic servo valve, the oil cannot be pre-filtered. When there are too many impurities in the oil, it will cause great pressure on the filtration inside the electric-controlled hydraulic servo valve, which may easily cause blockage inside the electric-controlled hydraulic servo valve. Therefore, an electric-controlled hydraulic servo valve is needed to meet the usage requirements. Utility Model Content

[0004] The purpose of the utility model is to provide an electronically controlled hydraulic servo valve to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an electronically controlled hydraulic servo valve, comprising an electronically controlled hydraulic servo valve, for controlling flow and pressure;

[0006] The oil inlet pipe is symmetrically arranged on the electronically controlled hydraulic servo valve and is used for the introduction of oil;

[0007] A connecting assembly, arranged on the oil inlet pipe, used for connecting and positioning the pipeline;

[0008] The oil guide pipe is arranged at the liquid inlet end of the connecting component to guide the flow;

[0009] A filter assembly is arranged at the liquid inlet end of the oil guide pipe and is used for filtering the oil;

[0010] A connecting pipe, arranged at the liquid inlet end of the connecting pipe and connected to the external oil pipe;

[0011] The oil outlet pipe is arranged on the electronically controlled hydraulic servo valve and is used to regulate the output of the rear oil.

[0012] Furthermore, the connecting assembly includes a connecting sleeve, the connecting sleeve is fixedly sleeved on the oil inlet pipe, and a sealing gasket is fixedly installed on the inner wall of the connecting sleeve.

[0013] Furthermore, the connection assembly also includes a connection frame, which is fixedly mounted on the connection sleeve, a positioning frame is fixedly mounted on the connection frame, a positioning clamp is movably arranged in the positioning frame, and a contact pad is fixedly mounted on the positioning clamp.

[0014] Furthermore, the connecting assembly also includes a double-headed screw, which is rotatably installed in the positioning frame, the positioning clamping plate is threadedly sleeved on the positioning frame, a guide rod is fixedly installed in the positioning frame, a guide hole is opened on the positioning clamping plate, and the guide rod is inserted into the guide hole.

[0015] Furthermore, the filter assembly includes a filter box, which is fixedly installed at the liquid inlet end of the oil guide pipe, and a filter plate is fixedly installed in the filter box.

[0016] Furthermore, the filter assembly also includes a rotating shaft, which is rotatably mounted on the filter plate, and on which scraping strips and blades are fixedly mounted.

[0017] Furthermore, the filter assembly also includes a collecting hopper, which is fixedly installed at the bottom of the filter box. A through pipe is fixedly installed at the bottom of the collecting hopper, and a sealing valve is provided on the through pipe.

[0018] The beneficial effects of the utility model are:

[0019] In the utility model, the end of the oil guide pipe is inserted into the oil inlet pipe through the arrangement of the connecting component and the oil guide pipe, and the sealing gasket can play a sealing role in the joint between the connecting sleeve and the wall of the oil guide pipe. The rotation of the double-headed screw will drive the two sets of positioning clamps to move on the double-headed screw and approach each other. The two positioning clamps move and approach each other in the positioning frame to clamp the wall of the oil guide pipe, so as to position the oil guide pipe. The filtered oil will enter the oil inlet pipe through the oil guide pipe, and enter the electronically controlled hydraulic servo valve through the oil inlet pipe. After the pressure and flow of the oil are adjusted by the electronically controlled hydraulic servo valve, it is discharged into the oil delivery pipeline through the oil outlet pipe.

[0020] In the utility model, through the arrangement of the filter assembly and the connecting pipe, the oil enters the filter box through the connecting pipe. When the oil enters the filter box, the blades will drive the rotating shaft to rotate under the impact of the oil, and the rotation of the rotating shaft will drive the scraper to rotate. The rotation of the scraper will scrape off the impurities accumulated on the filter plate to avoid clogging of the filter plate during long-term use. The scraped impurities will enter the collecting bucket for collection. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A three-dimensional structural schematic diagram of an electronically controlled hydraulic servo valve proposed by the utility model;

[0022] Figure 2 This is a three-dimensional structural schematic diagram from another angle of an electronically controlled hydraulic servo valve proposed by the utility model;

[0023] Figure 3 This is a schematic diagram of the structure of a positioning clamping plate, a double-ended screw rod, etc. of an electric-controlled hydraulic servo valve proposed by the utility model;

[0024] Figure 4 This is a schematic diagram of the structure of a connecting sleeve, a sealing gasket, etc. of an electric-controlled hydraulic servo valve proposed by the utility model;

[0025] Figure 5 The utility model is a schematic diagram of the structure of a filter component of an electronically controlled hydraulic servo valve.

[0026] In the figure: 1. electronically controlled hydraulic servo valve; 2. oil inlet pipe; 3. connecting assembly; 31. connecting sleeve; 32. sealing gasket; 33. connecting frame; 34. positioning frame; 35. positioning clamping plate; 36. contact pad; 37. double-headed screw; 38. guide rod; 39. guide hole; 4. oil guide pipe; 5. filter assembly; 51. filter box; 52. filter plate; 53. rotating shaft; 54. scraper; 55. blade; 56. collecting bucket; 57. through pipe; 58. sealing valve; 6. connecting pipe; 7. oil outlet pipe. DETAILED DESCRIPTION

[0027] 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 of the embodiments.

[0028] Example:

[0029] like Figure 1-5 As shown, this embodiment provides an electronically controlled hydraulic servo valve, including an electronically controlled hydraulic servo valve 1 for controlling flow and pressure; an oil inlet pipe 2, symmetrically arranged on the electronically controlled hydraulic servo valve 1, for introducing oil; a connecting component 3, arranged on the oil inlet pipe 2, for connecting and positioning the pipeline; an oil guide pipe 4, arranged at the liquid inlet end of the connecting component 3, for guiding the flow; a filter component 5, arranged at the liquid inlet end of the oil guide pipe 4, for filtering the oil; a connecting pipe 6, arranged at the liquid inlet end of the connecting pipe 6, connected to an external oil pipe; an oil outlet pipe 7, arranged on the electronically controlled hydraulic servo valve 1, for regulating the output of the rear oil;

[0030] When in use, connect the connecting pipe 6 to the external oil pipe, and connect the oil outlet pipe 7 to the external oil pipeline, connect the oil guide pipe 4 to the oil inlet pipe 2 through the connecting component 3, and the external oil will enter the filter component 5 through the connecting pipe 6, and the impurities in the oil will be filtered and cleaned by the filter component 5 to prevent excessive impurities from entering the electronically controlled hydraulic servo valve 1 and causing blockage of the electronically controlled hydraulic servo valve 1. The filtered oil will enter the oil inlet pipe 2 through the oil guide pipe 4, and enter the electronically controlled hydraulic servo valve 1 through the oil inlet pipe 2. After the electronically controlled hydraulic servo valve 1 adjusts the pressure and flow of the oil, it is discharged into the oil pipeline through the oil outlet pipe 7.

[0031] In one embodiment, specifically, the connection assembly 3 includes a connection sleeve 31, the connection sleeve 31 is fixedly sleeved on the oil inlet pipe 2, and a sealing gasket 32 ​​is fixedly installed on the inner wall of the connection sleeve 31;

[0032] When the oil guide pipe 4 and the oil inlet pipe 2 need to be connected, the oil guide pipe 4 can be inserted into the connecting sleeve 31, and the end of the oil guide pipe 4 can enter the oil inlet pipe 2. The sealing gasket 32 ​​can seal the joint between the connecting sleeve 31 and the wall of the oil guide pipe 4.

[0033] In one embodiment, specifically, the connection assembly 3 further includes a connection frame 33, the connection frame 33 is fixedly mounted on the connection sleeve 31, a positioning frame 34 is fixedly mounted on the connection frame 33, a positioning clamping plate 35 is movably arranged in the positioning frame 34, and a contact pad 36 is fixedly mounted on the positioning clamping plate 35;

[0034] When the oil guide pipe 4 needs to be positioned, the two positioning clamps 35 move toward each other in the positioning frame 34 and clamp the pipe wall of the oil guide pipe 4, so as to position the oil guide pipe 4 and prevent the oil guide pipe 4 from falling off. The contact pad 36 directly contacts the pipe wall of the oil guide pipe 4, which can increase the friction during contact and improve the positioning effect of the oil guide pipe 4.

[0035] In one embodiment, specifically, the connecting assembly 3 further includes a double-ended screw 37, which is rotatably mounted in the positioning frame 34, a positioning clamp 35 is threadedly sleeved on the positioning frame 34, a guide rod 38 is fixedly mounted in the positioning frame 34, a guide hole 39 is opened on the positioning clamp 35, and the guide rod 38 is inserted into the guide hole 39;

[0036] When the two sets of positioning clamps 35 need to be brought closer to each other, the double-headed screw 37 can be rotated. Under the guidance of the guide rod 38 and the guide hole 39, the rotation of the double-headed screw 37 will drive the two sets of positioning clamps 35 to move on the double-headed screw 37 and approach each other to clamp the oil guide pipe 4 in place.

[0037] In one embodiment, specifically, the filter assembly 5 includes a filter box 51, which is fixedly mounted at the liquid inlet end of the oil guide pipe 4, and a filter plate 52 is fixedly mounted in the filter box 51;

[0038] The oil enters the filter box 51 through the connecting pipe 6 , and the oil in the filter box 51 is filtered through the filter plate 52 , so that impurities in the oil can be filtered out to avoid clogging in the electronically controlled hydraulic servo valve 1 .

[0039] In one embodiment, specifically, the filter assembly 5 further includes a rotating shaft 53, which is rotatably mounted on the filter plate 52, and a scraper bar 54 and a blade 55 are fixedly mounted on the rotating shaft 53;

[0040] When the oil enters the filter box 51, the blades 55 will drive the shaft 53 to rotate under the impact of the oil, and the rotation of the shaft 53 will drive the scraper 54 to rotate. The rotation of the scraper 54 will scrape off the impurities accumulated on the filter plate 52 to avoid clogging of the filter plate 52 during long-term use.

[0041] In one embodiment, the filter assembly 5 further includes a collecting hopper 56, which is fixedly mounted at the bottom of the filter box 51, and a through pipe 57 is fixedly mounted at the bottom of the collecting hopper 56, and a sealing valve 58 is disposed on the through pipe 57;

[0042] The scraped impurities will enter the collecting bucket 56 for collection. The sealing valve 58 can be opened to release the impurities in the collecting bucket 56 through the through pipe 57.

[0043] Working principle: when in use, insert the oil guide pipe 4 into the connecting sleeve 31, and make the end of the oil guide pipe 4 enter the oil inlet pipe 2. The sealing gasket 32 ​​can seal the joint between the connecting sleeve 31 and the pipe wall of the oil guide pipe 4. Rotate the double-headed screw 37. Under the guidance of the guide rod 38 and the guide hole 39, the rotation of the double-headed screw 37 will drive the two sets of positioning clamps 35 to move on the double-headed screw 37 and approach each other. The two positioning clamps 35 move and approach each other in the positioning frame 34 to clamp the pipe wall of the oil guide pipe 4, so as to position the oil guide pipe 4 and prevent it from falling off. The contact pad 36 directly contacts the pipe wall of the oil guide pipe 4, which can increase the friction during contact and improve the positioning effect of the oil guide pipe 4. Then connect the connecting pipe 6 to the external oil pipe, and connect the oil outlet pipe 7 to the external oil pipeline. The oil enters the The oil in the filter box 51 will be filtered through the filter plate 52 to remove impurities in the oil, thus avoiding blockage in the electric-controlled hydraulic servo valve 1. When the oil enters the filter box 51, the blade 55 will drive the rotating shaft 53 to rotate under the impact of the oil, and the rotation of the rotating shaft 53 will drive the scraper 54 to rotate. The rotation of the scraper 54 will scrape off the impurities accumulated on the filter plate 52, thus avoiding blockage of the filter plate 52 during long-term use. The scraped impurities will enter the collecting bucket 56 for collection, and the sealing valve 58 can be opened to release the impurities in the collecting bucket 56 through the through pipe 57. The filtered oil will enter the oil inlet pipe 2 through the oil guide pipe 4, and enter the electric-controlled hydraulic servo valve 1 through the oil inlet pipe 2. After the pressure and flow of the oil are adjusted by the electric-controlled hydraulic servo valve 1, it is discharged into the oil pipeline through the oil outlet pipe 7.

[0044] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An electronically controlled hydraulic servo valve, comprising: An electrically controlled hydraulic servo valve (1) for controlling flow and pressure; An oil inlet pipe (2) is symmetrically arranged on the electronically controlled hydraulic servo valve (1) and is used for the introduction of oil; A connecting assembly (3) is arranged on the oil inlet pipe (2) and is used for connecting and positioning the pipeline; An oil guide pipe (4) is arranged at the liquid inlet end of the connecting component (3) and plays a role of guiding the flow; A filter assembly (5) is arranged at the liquid inlet end of the oil guide pipe (4) and is used for filtering the oil; A connecting pipe (6) is arranged at the liquid inlet end of the connecting pipe (6) and is connected to an external oil pipe; The oil outlet pipe (7) is arranged on the electronically controlled hydraulic servo valve (1) and is used for regulating the output of the rear oil.

2. The electronically controlled hydraulic servo valve according to claim 1, characterized in that: The connection assembly (3) comprises a connection sleeve (31), the connection sleeve (31) is fixedly sleeved on the oil inlet pipe (2), and a sealing gasket (32) is fixedly installed on the inner wall of the connection sleeve (31).

3. The electronically controlled hydraulic servo valve according to claim 2, characterized in that: The connection assembly (3) further comprises a connection frame (33), wherein the connection frame (33) is fixedly mounted on the connection sleeve (31), a positioning frame (34) is fixedly mounted on the connection frame (33), a positioning clamping plate (35) is movably arranged in the positioning frame (34), and a contact pad (36) is fixedly mounted on the positioning clamping plate (35).

4. The electronically controlled hydraulic servo valve according to claim 3, characterized in that: The connecting assembly (3) further comprises a double-ended screw (37), wherein the double-ended screw (37) is rotatably mounted in a positioning frame (34), the positioning clamping plate (35) is threadedly sleeved on the positioning frame (34), a guide rod (38) is fixedly mounted in the positioning frame (34), a guide hole (39) is formed on the positioning clamping plate (35), and the guide rod (38) is inserted into the guide hole (39).

5. The electronically controlled hydraulic servo valve according to claim 1, characterized in that: The filter assembly (5) comprises a filter box (51), the filter box (51) is fixedly mounted on the liquid inlet end of the oil guide pipe (4), and a filter plate (52) is fixedly mounted inside the filter box (51).

6. The electronically controlled hydraulic servo valve according to claim 5, characterized in that: The filter assembly (5) further comprises a rotating shaft (53), the rotating shaft (53) being rotatably mounted on the filter plate (52), and a scraper bar (54) and a blade (55) being fixedly mounted on the rotating shaft (53).

7. The electronically controlled hydraulic servo valve according to claim 6, characterized in that: The filter assembly (5) further comprises a collecting hopper (56), wherein the collecting hopper (56) is fixedly mounted on the bottom of the filter box (51), a through pipe (57) is fixedly mounted on the bottom of the collecting hopper (56), and a sealing valve (58) is provided on the through pipe (57).

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