Pilot control handle valve group for high-pressure oil cylinder

Abstract

The utility model relates to the technical field of valves, in particular to a pilot control handle valve group for a high-pressure oil cylinder, which comprises a valve body and a filter mechanism, an oil inlet and an oil outlet are arranged on the surface of the valve body, the filter mechanism comprises a shell, one side of the shell is fixedly connected with the oil inlet, a square groove is arranged on the surface of the shell, and the valve body is fixedly connected with the square groove. And a notch is formed in the bottom of the square groove, and a fine filtering plate is inserted into the notch. The filtering mechanism is arranged on one side of the valve body, impurities in oil can be effectively filtered out, the cleanliness of the oil entering the valve body is improved, abrasion and blockage of the impurities to components in the valve body are avoided, the service life of the valve set is prolonged, the rotary knob is rotated to drive the screw to rotate in the fixing block, and the valve set is convenient to use. The screw rod rotates to drive the clamping block to move upwards, so that the fine filter plate can be unfixed, the fine filter plate can be conveniently disassembled and replaced, and the maintenance cost and difficulty are reduced.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and in particular to a pilot control handle valve assembly for a high-pressure hydraulic cylinder. Background Technology

[0002] High-pressure hydraulic cylinders are widely used as crucial actuators in numerous industrial applications, engineering machinery, and agricultural machinery. Pilot control valve assemblies play a vital role in precisely regulating key parameters such as working pressure and flow rate of these cylinders. However, existing pilot control valve assemblies for high-pressure hydraulic cylinders often lack effective filtration structures. During actual use, impurities and particulate matter in the hydraulic oil can easily enter the valve assembly, leading to oil circuit blockage, accelerated wear of critical components like the valve core, and impacting the valve assembly's normal regulating function and lifespan. This increases equipment maintenance costs and downtime, and reduces the overall efficiency and stability of the hydraulic system. Therefore, it is necessary to design a high-pressure hydraulic cylinder pilot control valve assembly with filtration capabilities to address these issues. Utility Model Content

[0003] The purpose of this utility model is to solve the problems mentioned in the background art and to propose a pilot control handle valve group for high-pressure oil cylinders.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a pilot control handle valve assembly for a high-pressure hydraulic cylinder, comprising a valve body and a filter mechanism. The valve body has an oil inlet and an oil outlet on its surface. The filter mechanism includes a housing, one side of which is fixedly connected to the oil inlet. A square groove is formed on the surface of the housing, and a slot is formed at the bottom of the square groove. A fine filter plate is inserted inside the slot, and a connecting plate is fixedly connected to the top of the fine filter plate. A fixing block is fixedly connected to the surface of the housing, and a screw is threadedly connected to the inside of the fixing block. A locking block is rotatably connected to the surface of the screw, and the locking block abuts against the connecting plate. A knob is fixedly connected to the top of the screw, and an oil inlet connector is provided on the surface of the housing.

[0005] Preferably, the valve body is internally threaded with three adjusting bolts: adjusting bolt one, adjusting bolt two, and adjusting bolt three. The thread density of adjusting bolt one, adjusting bolt two, and adjusting bolt three increases sequentially. The bottom of adjusting bolt one, adjusting bolt two, and adjusting bolt three are respectively rotatably connected to a first blocking block, a second blocking block, and a third blocking block. The top of adjusting bolt one, adjusting bolt two, and adjusting bolt three are all fixedly connected to a handwheel.

[0006] Preferably, a limiting rod is fixedly connected to the surface of the card block, and a limiting groove is formed on the surface of the connecting plate, with the limiting rod inserted inside the limiting groove.

[0007] Preferably, there are two sets of the card blocks, and the two sets of card blocks are symmetrically distributed on both sides of the middle part of the surface of the connecting plate.

[0008] Preferably, a sealing gasket is provided inside the square groove, and the sealing gasket is made of elastic rubber.

[0009] Preferably, the bottom of the outer casing is fixedly connected to the discharge pipe and a sealing cap is provided at the bottom.

[0010] Preferably, an electric push rod is fixedly connected to the surface of the housing, the output end of the electric push rod extends into the interior of the housing, and a scraper is fixedly connected to the output end, the edge of the scraper abutting against the fine filter plate.

[0011] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0012] 1. In this utility model, by setting a filter mechanism on one side of the valve body, impurities in the oil can be effectively filtered, improving the cleanliness of the oil entering the valve body, avoiding wear and blockage of the internal components of the valve body caused by impurities, and extending the service life of the valve assembly. By rotating the knob, the knob drives the screw to rotate inside the fixed block. The rotation of the screw drives the locking block to move upward, which can release the fixation of the fine filter plate, making it easy to disassemble and replace the fine filter plate, reducing maintenance costs and difficulty.

[0013] 2. In this utility model, the output end of the electric push rod pushes the scraper to move downward on the surface of the fine filter plate, which can scrape off the impurities attached to the fine filter plate, prevent impurities from clogging the fine filter plate, ensure the filtration efficiency of the fine filter plate, extend the service life of the fine filter plate, and reduce the frequency of replacing the fine filter plate. Attached Figure Description

[0014] Figure 1 This utility model provides a schematic diagram of a pilot control handle valve assembly for a high-pressure hydraulic cylinder;

[0015] Figure 2 This utility model provides an exploded view of a pilot control handle valve assembly for a high-pressure hydraulic cylinder.

[0016] Figure 3 This utility model provides a schematic diagram of the components of a pilot control handle valve assembly for a high-pressure hydraulic cylinder.

[0017] Figure 4 This utility model provides a cross-sectional view of the valve body of a pilot control handle valve assembly for a high-pressure hydraulic cylinder;

[0018] Figure 5 This utility model provides a cross-sectional view of the housing of a pilot control handle valve assembly for a high-pressure hydraulic cylinder.

[0019] Legend:

[0020] 1. Valve body; 2. Filtering mechanism; 201. Outer shell; 202. Square groove; 203. Groove opening; 204. Fine filter plate; 205. Connecting plate; 206. Fixing block; 207. Screw; 208. Locking block; 209. Knob; 3. Sealing gasket; 4. Limiting groove; 5. Limiting rod; 6. Discharge pipe; 7. Sealing cover; 8. Electric push rod; 9. Scraper; 10. Pressure adjusting bolt one; 11. Pressure adjusting bolt two; 12. Pressure adjusting bolt three; 13. Handwheel; 14. First block; 15. Second block; 16. Third block; 17. Oil inlet; 18. Oil outlet; 19. Oil inlet connector. 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 5As shown, this utility model provides a technical solution: a pilot control handle valve assembly for a high-pressure hydraulic cylinder, including a valve body 1 and a filter mechanism 2. The surface of the valve body 1 is provided with an oil inlet 17 and an oil outlet 18. The filter mechanism 2 includes a housing 201, one side of which is fixedly connected to the oil inlet 17. A square groove 202 is formed on the surface of the housing 201, and a slot 203 is formed at the bottom of the square groove 202. A fine filter plate 204 is inserted inside the slot 203. A connecting plate 205 is fixedly connected to the top of the fine filter plate 204. A fixing block 206 is fixedly connected to the surface of the housing 201. A screw 207 is threadedly connected inside the fixing block 206. A locking block 208 is rotatably connected to the surface of the screw 207, and the locking block 208 abuts against the connecting plate 205. A knob 209 is fixedly connected to the top of the screw 207. An oil inlet connector 19 is provided on the surface of the housing 201. The internal thread of the valve body 1 is connected to... There are three adjusting bolts: one (10), one (11), and one (12). The thread density of the adjusting bolts increases sequentially. The bottom of the adjusting bolts is rotatably connected to the first block (14), the second block (15), and the third block (16). The top of each adjusting bolt is fixedly connected to a handwheel (13). The surface of the locking block (208) is fixedly connected to a limit rod (5). The surface of the connecting plate (205) is provided with a limit groove (4). The limit rod (5) is inserted into the limit groove (4). There are two sets of locking blocks (208). The two sets of locking blocks (208) are symmetrically distributed on both sides of the middle of the surface of the connecting plate (205). A sealing gasket (3) is provided inside the square groove (202). The sealing gasket (3) is made of elastic rubber. The bottom of the outer shell (201) is fixedly connected to the discharge pipe (6). The bottom of the discharge pipe (6) is provided with a sealing cover (7).

[0024] In this embodiment, by setting a filter mechanism 2 on one side of the valve body 1, impurities in the oil can be effectively filtered, improving the cleanliness of the oil entering the valve body 1, preventing impurities from causing wear and blockage to the internal components of the valve body 1, and extending the service life of the valve assembly. By rotating the knob 209, the knob 209 drives the screw 207 to rotate inside the fixed block 206. The rotation of the screw 207 causes the locking block 208 to move upward, which can release the fixation of the fine filter plate 204, making it easy to disassemble and replace the fine filter plate 204, reducing maintenance costs and difficulty. By setting pressure adjusting bolts 10, 11, and 12 inside the valve body 1, with the thread density increasing sequentially, and in conjunction with different blocking blocks, the operator can select different pressure adjusting bolts to adjust the oil pressure according to actual needs. The limiting rod on the surface of the locking block 208 can be used to adjust the oil pressure. 5. Inserted into the limiting groove 4 of the connecting plate 205, it can prevent the locking block 208 from shifting or rotating during movement, ensuring that the locking block 208 can accurately abut against the connecting plate 205, thus enhancing the stability and reliability of fixing the fine filter plate 204. The sealing gasket 3 made of elastic rubber material is set inside the square groove 202, which can enhance the sealing between the outer shell 201 and the fine filter plate 204, preventing oil leakage from the square groove 202, ensuring the normal operation of the filter mechanism 2, and also avoiding pollution of the surrounding environment by oil leakage. The discharge pipe 6 and sealing cover 7 are set at the bottom of the outer shell 201. When the impurities filtered by the fine filter plate 204 accumulate to a certain extent, the sealing cover 7 can be opened and the impurities can be discharged through the discharge pipe 6, which is convenient for cleaning and maintenance of the filter mechanism 2 and maintaining the filtration performance of the filter mechanism 2.

[0025] Example 2: As Figure 5 As shown, an electric push rod 8 is fixedly connected to the surface of the housing 201. The output end of the electric push rod extends into the interior of the housing 201, and a scraper 9 is fixedly connected to the output end. The edge of the scraper 9 abuts against the fine filter plate 204.

[0026] In this embodiment, the output end of the electric push rod 8 pushes the scraper 9 to move downward on the surface of the fine filter plate 204, thereby scraping off the impurities attached to the fine filter plate 204, preventing impurities from clogging the fine filter plate 204, ensuring the filtration efficiency of the fine filter plate 204, extending the service life of the fine filter plate 204, and reducing the frequency of replacing the fine filter plate 204.

[0027] The working principle of this embodiment is as follows: During use, external hydraulic oil enters the housing 201 of the filter mechanism 2 through the oil inlet connector 19. The oil first passes through the fine filter plate 204 in the housing 201. The fine filter plate 204 filters impurities in the oil and intercepts them on its surface. The clean oil after filtration enters the valve body 1 through the oil inlet 17. During the filtration process, the electric push rod 8 will move periodically, and its output end will push the scraper 9 to move downward on the surface of the fine filter plate 204, scraping off the impurities attached to the fine filter plate 204. The scraped-off impurities will settle at the bottom of the housing 201. When impurities need to be removed, open the sealing cover 7 at the bottom of the discharge pipe 6 to discharge the impurities. When the fine filter plate 204 needs to be replaced, the operator turns the knob 209. The knob 209 drives the screw 207 to rotate inside the fixing block 206. Since the screw 207 is rotatably connected to the locking block 208, the rotation of the screw 207 will cause the locking block 208 to move upward, releasing the contact with the connecting plate 205, thereby releasing the fixation of the fine filter plate 204. At this time, the fine filter plate 204 can be pulled out from the slot 203 for replacement. After replacement, turn the knob 209 in the opposite direction to make the locking block 208 move downward and abut against the connecting plate 205, fixing the fine filter plate 204. During this process, the limiting rod 5 on the surface of the locking block 208 is inserted into the limiting groove 4 of the connecting plate 205 to ensure the accuracy of the movement of the locking block 208. The two sets of symmetrically distributed locking blocks 208 ensure that the fine filter plate 204 is subjected to uniform force. The sealing gasket 3 in the square groove 202 ensures the sealing between the outer shell 201 and the fine filter plate 204. The oil entering the valve body 1 flows from the oil outlet 18 to the high-pressure oil cylinder. The operator adjusts the oil pressure according to actual needs. When oil pressure adjustment is required, the handwheel 13 can be turned to drive the pressure adjusting bolt to rotate. If a larger oil pressure adjustment is required, the pressure adjusting bolt 10 can be turned. Due to its smaller thread density, the first block 14 moves relatively quickly when rotated, achieving coarse adjustment. If fine oil pressure adjustment is required, the pressure adjusting bolts 11 and 12 can be turned. Their larger thread density causes the second block 15 or third block 16 to move relatively slowly when rotated, achieving fine adjustment. In this way, the oil pressure entering the high-pressure cylinder can be precisely controlled to meet the needs of different working conditions.

[0028] 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 pilot control handle valve assembly for a high-pressure hydraulic cylinder, comprising a valve body (1) and a filter mechanism (2), characterized in that: The valve body (1) has an oil inlet (17) and an oil outlet (18) on its surface. The filter mechanism (2) includes a housing (201). One side of the housing (201) is fixedly connected to the oil inlet (17). A square groove (202) is formed on the surface of the housing (201). A slot (203) is formed at the bottom of the square groove (202). A fine filter plate (204) is inserted into the slot (203). The top of the fine filter plate (204) is fixed. A connecting plate (205) is connected to the outer shell (201), a fixing block (206) is fixedly connected to the surface of the outer shell (201), a screw (207) is threadedly connected to the inside of the fixing block (206), a locking block (208) is rotatably connected to the surface of the screw (207), the locking block (208) abuts against the connecting plate (205), a knob (209) is fixedly connected to the top of the screw (207), and an oil inlet connector (19) is provided on the surface of the outer shell (201).

2. The pilot control handle valve assembly for high-pressure hydraulic cylinders according to claim 1, characterized in that: The valve body (1) is internally threaded with a pressure adjusting bolt one (10), a pressure adjusting bolt two (11), and a pressure adjusting bolt three (12). The thread density of the pressure adjusting bolt one (10), the pressure adjusting bolt two (11), and the pressure adjusting bolt three (12) increases sequentially. The bottom of the pressure adjusting bolt one (10), the pressure adjusting bolt two (11), and the pressure adjusting bolt three (12) is rotatably connected with a first blocking block (14), a second blocking block (15), and a third blocking block (16), respectively. The top of the pressure adjusting bolt one (10), the pressure adjusting bolt two (11), and the pressure adjusting bolt three (12) is fixedly connected with a handwheel (13).

3. The pilot control handle valve assembly for high-pressure hydraulic cylinders according to claim 1, characterized in that: The surface of the card block (208) is fixedly connected to a limiting rod (5), and the surface of the connecting plate (205) is provided with a limiting groove (4), and the limiting rod (5) is inserted into the limiting groove (4).

4. The pilot control handle valve assembly for high-pressure hydraulic cylinders according to claim 1, characterized in that: There are two sets of the card blocks (208), and the two sets of card blocks (208) are symmetrically distributed on both sides of the middle part of the surface of the connecting plate (205).

5. The pilot control handle valve assembly for high-pressure hydraulic cylinders according to claim 1, characterized in that: The inside of the square groove (202) is provided with a sealing gasket (3), which is made of elastic rubber.

6. The pilot control handle valve assembly for high-pressure hydraulic cylinders according to claim 1, characterized in that: The bottom of the outer shell (201) is fixedly connected to the discharge pipe (6) and a sealing cap (7) is provided at the bottom.

7. The pilot control handle valve assembly for high-pressure hydraulic cylinders according to claim 1, characterized in that: An electric push rod (8) is fixedly connected to the surface of the housing (201). The output end of the electric push rod extends into the interior of the housing (201) and is fixedly connected to a scraper (9). The edge of the scraper (9) abuts against the fine filter plate (204).

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