Multi-stage adjustable oil pressure valve

Abstract

The utility model relates to the technical field of oil pressure valves, and discloses a multistage adjustable oil pressure valve which comprises a filtering mechanism, a valve body, a sealing disc, six butt joint holes, six oil leakage holes, an upper cavity and a lower cavity, an oil outlet pipe is fixedly arranged on the upper side of the end face of one side of the valve body, and an oil inlet pipe is fixedly arranged on the lower side of the end face of the other side of the valve body. Two first oil cabins, two second oil cabins and two third oil cabins are symmetrically formed in the valve body. According to the oil pressure valve, the through hole can be aligned with different butt-joint holes and the oil leakage hole can be aligned with different oil holes by rotating the lower rotating rod, the oil outlet quantity of the oil pressure valve can be adjusted through different numbers of oil holes, the oil pressure valve is more convenient to adjust, multi-stage control is achieved, and the oil pressure valve is simple in structure, easy to manufacture and low in cost. Oil entering the valve main body can be filtered through the filter plate, so that the influence of impurities on normal use of the valve main body is effectively avoided.

Description

Technical Field

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

[0002] A hydraulic valve is a device used to control the flow, pressure, or direction of hydraulic fluid in a hydraulic system. Hydraulic valves are key components in hydraulic systems, achieving precise control of machines or equipment by controlling various parameters of the hydraulic fluid. Among them, a multi-stage adjustable hydraulic valve is a type of valve that can adjust the hydraulic pressure in multiple stages, and this valve can be set with multiple different pressure levels.

[0003] Existing multi-stage adjustable hydraulic valves typically employ complex internal structures, including multiple valve cores, valve seats, and control elements. Such complex structures are inconvenient to manufacture, and these valves lack a filtration system, making it impossible to effectively filter impurities in the oil. Therefore, those skilled in the art have provided a multi-stage adjustable hydraulic valve to address the problems mentioned in the background section. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a multi-stage adjustable hydraulic valve. By rotating the lower rotating rod, the through hole can be aligned with different mating holes, and the oil leakage hole can be aligned with different oil holes. The oil output of the hydraulic valve can be adjusted by using different numbers of oil holes, making the adjustment of the hydraulic valve more convenient.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a multi-stage adjustable hydraulic valve, comprising a filter mechanism, a valve body, a sealing disc, six docking holes, six oil leakage holes, an upper chamber, and a lower chamber. An oil outlet pipe is fixedly installed on the upper side of one end face of the valve body, and an oil inlet pipe is fixedly installed on the lower side of the other end face of the valve body. Two first oil chambers, two second oil chambers, and two third oil chambers are symmetrically opened inside the valve body. A first oil hole is opened in the middle of the top surface of each of the two first oil chambers. Two second oil holes are opened in the top surface of each of the two second oil chambers. Three third oil holes are opened in the top surface of each of the two third oil chambers. A lower rotating rod is fixedly installed in the middle of the lower end face of the sealing disc, and a through hole is opened in the middle of the front end face of the lower rotating rod.

[0006] The filtration mechanism includes a fixed ring and a filter plate. A housing is fixedly installed on one side of the top and bottom surfaces of the fixed ring. An obstruction block is slidably installed inside each of the two housings. Limiting blocks are fixedly installed on the front and rear inner walls of the fixed ring.

[0007] Furthermore, a top cover is fixedly mounted on the upper end face of the valve body by bolts, a power structure is fixedly mounted on the upper end face of the top cover, an upper rotating rod is fixedly mounted at the middle position of the upper end face of the sealing disc, the upper rotating rod is rotatably mounted on the inner wall of the top cover, and the power structure is connected to the upper end face of the upper rotating rod.

[0008] Furthermore, the sealing disc is rotatably disposed on the bottom surface of the upper cavity, the lower rotating rod is rotatably disposed on the inner wall of the valve body, and the filter mechanism is fixedly disposed on the inner wall of the oil inlet pipe on the side away from the valve body.

[0009] Furthermore, the six docking holes are respectively located between the two first oil tanks, the two second oil tanks, the two third oil tanks and the inner wall of the valve body, and the six oil leakage holes are symmetrically opened in groups of three on the upper end face of the sealing plate.

[0010] Furthermore, the upper cavity is located on the upper side of the valve body, the lower cavity is located on the lower side of the valve body, and the through hole is arranged parallel to the six mating holes.

[0011] Furthermore, the front and rear faces of the filter plate are provided with limiting grooves, the upper and lower faces of the filter plate are provided with locking grooves, the inner walls of the front and rear sides of the fixing ring are fixedly provided with limiting blocks, the limiting blocks are slidably disposed in the inner wall of the limiting grooves, and the filter plate is slidably disposed in the inner wall of the fixing ring.

[0012] Furthermore, a rear block is fixedly installed on the other side of the inner bottom surface and inner top surface of the fixing ring, and two push springs are fixedly installed between the two blocking blocks and the two outer shells. The filter plate is installed between the two outer shells and the two rear blocks.

[0013] This utility model has the following beneficial effects:

[0014] 1. This utility model proposes a multi-stage adjustable hydraulic valve. A sealing disc drives a lower rotating rod to rotate, aligning the through hole with the mating hole and the oil drain hole with the first oil hole. Oil enters the through hole and mating hole from the lower rotating rod, and the oil in the mating hole enters the first oil chamber. The oil in the first oil chamber is discharged into the upper chamber through the first oil hole and the oil drain hole. By rotating the lower rotating rod, the through hole can be aligned with different mating holes, and the oil drain hole with different oil holes. The oil output of the hydraulic valve can be adjusted by using different numbers of oil holes, making the hydraulic valve easier to adjust and enabling multi-stage control. Furthermore, this structure is simple and easy to manufacture.

[0015] 2. The multi-stage adjustable oil pressure valve proposed in this utility model pushes the filter plate towards the center of the fixed ring. The upper groove squeezes the blocking block, causing the blocking block to retract into the outer shell. The upper groove reaches between the outer shell and the rear block, and the blocking block pops out without obstruction to block the filter plate, making the filter plate easier to install. Moreover, during disassembly, the filter plate can be removed simply by pressing the blocking block into the outer shell, facilitating filter plate replacement. Furthermore, the filter plate can filter the oil entering the valve body, effectively preventing impurities from affecting the normal operation of the valve body. Attached Figure Description

[0016] Figure 1 This is an isometric schematic diagram of the present invention;

[0017] Figure 2 This is a cross-sectional view of the present invention;

[0018] Figure 3 This is a top sectional view of the valve body of this utility model;

[0019] Figure 4 This is a top sectional view of the valve body of this utility model;

[0020] Figure 5 This is a bottom view of the sealing disc of this utility model;

[0021] Figure 6 This is an isometric schematic diagram of the filtration mechanism of this utility model;

[0022] Figure 7 This is an isometric view of the fixing ring of this utility model;

[0023] Figure 8 This is an isometric view of the filter plate of this utility model;

[0024] Figure 9 This is a frontal cross-sectional view of the fixing ring of this utility model.

[0025] Legend:

[0026] 1. Filtering mechanism; 2. Oil inlet pipe; 3. Valve body; 4. Top cover; 5. Power structure; 6. Oil outlet pipe; 7. Upper rotating rod; 8. Sealing disc; 9. Lower rotating rod; 10. Upper chamber; 11. Lower chamber; 12. Through hole; 13. First oil tank; 14. First oil hole; 15. Second oil tank; 16. Second oil hole; 17. Third oil tank; 18. Third oil hole; 19. Connecting hole; 20. Oil leakage hole; 101. Fixing ring; 102. Filter plate; 103. Outer shell; 104. Limiting block; 105. Blocking block; 106. Push spring; 107. Rear block; 108. Limiting groove; 109. Slot. Detailed Implementation

[0027] 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.

[0028] Reference Figure 1 - Figure 5 An embodiment of this utility model provides a multi-stage adjustable oil pressure valve, including a filter mechanism 1, a valve body 3, a sealing plate 8, six docking holes 19, six oil leakage holes 20, an upper chamber 10 and a lower chamber 11. An oil outlet pipe 6 is fixedly installed on the upper side of one end face of the valve body 3, and an oil inlet pipe 2 is fixedly installed on the lower side of the other end face of the valve body 3. Two first oil chambers 13, two second oil chambers 15 and two third oil chambers 17 are symmetrically opened inside the valve body 3. A first oil hole 14 is opened in the middle of the top surface of each of the two first oil chambers 13. Two second oil holes 16 are opened in the top surface of each of the two second oil chambers 15. Three third oil holes 18 are opened in the top surface of each of the two third oil chambers 17. A lower rotating rod 9 is fixedly installed in the middle of the lower end face of the sealing plate 8. A through hole 12 is opened in the middle of the front end face of the lower rotating rod 9.

[0029] A top cover 4 is fixedly mounted on the upper end face of the valve body 3 by bolts. A power structure 5 is fixedly mounted on the upper end face of the top cover 4. An upper rotating rod 7 is fixedly mounted at the middle position of the upper end face of the sealing disc 8. The upper rotating rod 7 is rotatably mounted on the inner wall of the top cover 4. The power structure 5 is connected to the upper end face of the upper rotating rod 7. The sealing disc 8 is rotatably mounted on the bottom surface of the upper cavity 10. The lower rotating rod 9 is rotatably mounted on the inner wall of the valve body 3. The filter mechanism 1 is fixedly mounted on the inner wall of the oil inlet pipe 2 on the side away from the valve body 3.

[0030] Six docking holes 19 are respectively located between the two first oil tanks 13, the two second oil tanks 15, the two third oil tanks 17 and the inner wall of the valve body 3. Six oil leakage holes 20 are symmetrically opened in groups of three on the upper end face of the sealing plate 8. The upper cavity 10 is opened on the upper side of the valve body 3, and the lower cavity 11 is opened on the lower side of the valve body 3. The through hole 12 is arranged parallel to the six docking holes 19.

[0031] Specifically, the pipeline is connected to the inlet pipe 2 and the outlet pipe 6. The oil pumped into the inlet pipe 2 is filtered by the filter mechanism 1, ensuring that the oil entering the valve body 3 is free of impurities. The oil enters the lower chamber 11, and the upper rotating rod 7 is rotated by the power structure 5. The upper rotating rod 7 drives the lower rotating rod 9 to rotate through the sealing plate 8. The rotating lower rotating rod 9 aligns the through hole 12 with the docking hole 19 and the oil leakage hole 20 with the first oil hole 14. The oil inside the lower chamber 11 enters the through hole 12 through the lower rotating rod 9, and then enters the docking hole 19 through the through hole 12. Oil from the docking hole 19 enters the first oil tank 13. Oil from the first oil tank 13 is discharged into the upper cavity 10 through the first oil hole 14 and the oil drain hole 20, and finally discharged from the oil outlet pipe 6. By rotating the lower rotating rod 9, the through hole 12 can be aligned with different docking holes 19, so that oil enters the second oil tank 15 or the third oil tank 17. The oil drain hole 20 is aligned with the second oil hole 16 or the third oil hole 18. The oil output of the oil pressure valve can be adjusted by using different numbers of oil holes, making the adjustment of the oil pressure valve more convenient.

[0032] Reference Figure 6 - Figure 9 The filter mechanism 1 includes a fixed ring 101 and a filter plate 102. A housing 103 is fixedly installed on one side of the inner top surface and inner bottom surface of the fixed ring 101. A blocking block 105 is slidably installed inside the two housings 103. A limit block 104 is fixedly installed on the front inner wall and the rear inner wall of the fixed ring 101.

[0033] Both the front and rear faces of the filter plate 102 have limiting grooves 108, and both the upper and lower faces of the filter plate 102 have slots 109. Both the front and rear inner walls of the fixing ring 101 are fixedly provided with limiting blocks 104. The limiting blocks 104 are slidably disposed on the inner wall of the limiting grooves 108. The filter plate 102 is slidably disposed on the inner wall of the fixing ring 101. Both the bottom and top inner surfaces of the fixing ring 101 are fixedly provided with rear blocks 107. Both the two blocking blocks 105 and the two outer shells 103 are fixedly provided with two push springs 106. The filter plate 102 is disposed between the two outer shells 103 and the two rear blocks 107.

[0034] Specifically, align the limiting groove 108 on the filter plate 102 with the limiting block 104 on the fixing ring 101, push the filter plate 102 towards the middle of the fixing ring 101, and the limiting block 104 slides into the limiting groove 108. The upper groove presses against the blocking block 105, causing the blocking block 105 to retract into the inner wall of the outer shell 103. The upper groove reaches between the outer shell 103 and the rear block 107. The blocking block 105 is pushed out by the spring 106 without any obstruction. The blocking block 105 blocks the front of the upper groove, making it easier to install the filter plate 102. Moreover, when disassembling, simply press the blocking block 105 into the outer shell 103 to remove the filter plate 102, making it convenient to replace the filter plate 102.

[0035] Working principle: Align the limiting groove 108 on the filter plate 102 with the limiting block 104 on the fixing ring 101, push the filter plate 102 towards the middle of the fixing ring 101, the upper groove squeezes the blocking block 105 to retract into the inner wall of the outer shell 103, when the filter plate 102 reaches between the outer shell 103 and the rear block 107, the blocking block 105 is unobstructed and will be pushed out by the spring 106, the blocking block 105 restricts the filter plate 102, connect the pipeline to the oil inlet pipe 2 and the oil outlet pipe 6, the oil pumped into the oil inlet pipe 2 will be filtered by the filter mechanism 1, so that the oil entering the valve body 3 is free of impurities, the oil enters the lower chamber 11, and through the power structure Rotating the upper rotating rod 7 of the structure 5 causes the lower rotating rod 9 to rotate via the sealing plate 8. The rotating lower rotating rod 9 aligns the through hole 12 with the docking hole 19 and the oil leakage hole 20 with the first oil hole 14. The oil inside the lower cavity 11 enters the lower rotating rod 9 and enters the docking hole 19 through the through hole 12, and then enters the first oil tank 13 through the docking hole 19. The oil inside the first oil tank 13 is discharged into the upper cavity 10 through the first oil hole 14 and the aligned oil leakage hole 20, and finally discharged from the oil outlet pipe 6. By rotating the lower rotating rod 9, the through hole 12 can be aligned with different docking holes 19 and the oil leakage hole 20 can be aligned with different oil holes, thereby adjusting the oil output of the oil pressure valve.

[0036] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. 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 adjustable hydraulic valve, comprising a filter mechanism (1), a valve body (3), a sealing disc (8), six mating holes (19), six oil leakage holes (20), an upper chamber (10), and a lower chamber (11), characterized in that: An oil outlet pipe (6) is fixedly installed on the upper side of one end face of the valve body (3), and an oil inlet pipe (2) is fixedly installed on the lower side of the other end face of the valve body (3). Two first oil chambers (13), two second oil chambers (15) and two third oil chambers (17) are symmetrically opened inside the valve body (3). A first oil hole (14) is opened in the middle of the top surface of the two first oil chambers (13), two second oil holes (16) are opened in the top surface of the two second oil chambers (15), and three third oil holes (18) are opened in the top surface of the two third oil chambers (17). A lower rotating rod (9) is fixedly installed in the middle of the lower end face of the sealing plate (8), and a through hole (12) is opened in the middle of the front end face of the lower rotating rod (9). The filtration mechanism (1) includes a fixed ring (101) and a filter plate (102). A housing (103) is fixedly installed on one side of the inner top surface and inner bottom surface of the fixed ring (101). A blocking block (105) is slidably installed inside the two housings (103). A limit block (104) is fixedly installed on the front inner wall and the rear inner wall of the fixed ring (101).

2. The multi-stage adjustable oil pressure valve according to claim 1, characterized in that: The valve body (3) is fixed with a top cover (4) by bolts. The top cover (4) is fixed with a power structure (5). The middle position of the top surface of the sealing disc (8) is fixed with an upper rotating rod (7). The upper rotating rod (7) is rotatably mounted on the inner wall of the top cover (4). The power structure (5) is connected to the upper surface of the upper rotating rod (7).

3. The multi-stage adjustable oil pressure valve according to claim 1, characterized in that: The sealing disc (8) is rotatably disposed on the bottom surface of the upper cavity (10), the lower rotating rod (9) is rotatably disposed on the inner wall of the valve body (3), and the filter mechanism (1) is fixedly disposed on the inner wall of the oil inlet pipe (2) away from the valve body (3).

4. The multi-stage adjustable oil pressure valve according to claim 1, characterized in that: The six docking holes (19) are respectively located between the two first oil tanks (13), the two second oil tanks (15), the two third oil tanks (17) and the inner wall of the valve body (3), and the six oil leakage holes (20) are symmetrically opened in groups of three on the upper end face of the sealing plate (8).

5. A multi-stage adjustable oil pressure valve according to claim 1, characterized in that: The upper cavity (10) is located on the upper side of the valve body (3), the lower cavity (11) is located on the lower side of the valve body (3), and the through hole (12) is arranged parallel to the six docking holes (19).

6. A multi-stage adjustable oil pressure valve according to claim 1, characterized in that: The filter plate (102) has a limiting groove (108) on both the front and rear faces, and a slot (109) on both the upper and lower faces. The fixing ring (101) has a limiting block (104) fixedly installed on both the front and rear inner walls. The limiting block (104) is slidably installed on the inner wall of the limiting groove (108), and the filter plate (102) is slidably installed on the inner wall of the fixing ring (101).

7. A multi-stage adjustable oil pressure valve according to claim 1, characterized in that: The bottom and top surfaces of the fixed ring (101) are each fixedly provided with a rear block (107) on the other side. Two push springs (106) are fixedly provided between the two blocking blocks (105) and the two outer shells (103). The filter plate (102) is provided between the two outer shells (103) and the two rear blocks (107).

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