A valve core structure of a reversing valve

Abstract

The application relates to the field of reversing valve spools, and discloses a reversing valve spool structure. In the application, the outer surface of a valve body is provided with a side sealing block, the outer surfaces of the two sides of the valve body corresponding to the side sealing block are welded with inner protective rings, the outer surfaces of the inner protective rings are welded with adjusting pieces, the outer surface of the side sealing block is welded with an outer filtering ring, the outer surface of the outer side of the valve body corresponding to the inner protective ring is provided with a threaded groove, and the outer surface of the valve body corresponding to the threaded groove is provided with a clamping piece. A filtering space is formed by the outer filtering ring, the adjusting piece and the inner protective ring on the two sides of the side sealing block, the outer side is closed by the clamping piece, the recess groove corresponding to the clamping piece is rotated to make the clamping piece displace inward and outward, the adjusting piece made of an aluminum alloy material has good deformation and resilience, thereby the inclination angle of the adjusting piece is adjusted, when the oil way of the spool is converted, the impact force generated by the pressure of the oil way is buffered to a certain extent by the adjusting piece at the clamping piece, and when there are impurities in the oil way, the impact force can clamp the impurities in the filtering space.

Description

Technical Field

[0001] This application belongs to the field of directional valve core technology, specifically a directional valve core structure. Background Technology

[0002] The directional control valve spool is a crucial control element in a hydraulic system, primarily used to control the direction, flow rate, and pressure changes of hydraulic fluid. It switches the direction of hydraulic oil flow by altering the fluid passage layout at different operating positions. Directional control valve spools are typically used in conjunction with valve bodies and come in various structural forms, such as check valves and two-way valves, to suit different operational requirements. Their working principle involves using electromagnetic, mechanical, or hydraulic actuators to cause the spool to move axially or rotate within the valve body, thereby changing the flow path and controlling the hydraulic system's operation.

[0003] For example, application CN212536297U discloses a directional valve core structure, including a cylinder 1, with cylinders 2 and 3 respectively on the left and right sides of cylinder 1, and cylinders 4 and 5 respectively between cylinders 2 and 3 and cylinder 1. A section of cylinder 6 and cylinder 7 protrudes outward from the end faces of cylinders 2 and 3 respectively. Radial through oil holes 1 and 2 are respectively provided on the left and right sides of cylinder 1. Cylinder 3 has radially penetrating oil holes 3 and 4, cylinder 6 has an axially arranged oil hole 5, and cylinder 7 has an axially arranged oil hole 6. Four annular oil grooves are provided at the junction of oil holes 1, 2, 3, and 4 with the cylindrical surfaces of cylinders 1, 2, and 3. This invention can prevent hydraulic oil from leaking from the high-pressure oil port to the working oil port, so that the actuator connected to the working oil port will not be affected by internal hydraulic oil leakage.

[0004] However, this application lacks a suitable buffer structure, and the impact force in the valve body oil circuit can easily flush oil and corrosive impurities into the valve core, resulting in frequent replacement and maintenance and poor durability. Utility Model Content

[0005] The purpose of this application is to provide a valve core structure for a directional valve, in order to solve the problem that the impact force of the valve body oil circuit can easily flush oil and corrosive impurities into the valve core, resulting in frequent replacement and maintenance and poor durability.

[0006] The technical solution adopted in this application is as follows: a reversing valve core structure, including a valve body, a side sealing block is provided on the outer surface of the valve body, an inner protective ring is welded on both sides of the outer surface of the valve body corresponding to the side sealing block, an adjusting plate is welded on the outer surface of the inner protective ring, an outer filter ring is welded on the outer surface of the side sealing block, a threaded groove is provided on the outer surface of the valve body corresponding to the inner protective ring, and a clamping plate is provided on the outer surface of the valve body corresponding to the threaded groove.

[0007] By adopting the above technical solution, based on the main function, a filtration space is formed by the outer filter ring, adjusting plate, and inner protective ring on both sides of the side sealing block. The outer side is sealed by clamps. The rotation of the groove and thread groove corresponding to the clamps causes the clamps to move inward and outward. The aluminum alloy material of the adjusting plate has good deformation and resilience, thereby adjusting the tilt angle of the adjusting plate. When the valve core oil circuit is switched, the impact force generated by the oil circuit pressure is buffered to a certain extent by the adjusting plate at the clamp. At the same time, when there are impurities in the oil circuit, the impact force will trap the impurities with large mass and hardness in the filtration space. After continuous filtration, the oil overflows through the outer filter ring. The clamps move inward and outward, adjusting the gap between the outer filter ring and the clamps to leave impurities in the adjusting plate, reducing the frequency of valve core replacement, and adjusting the buffering effect of the oil circuit to ensure the durability of the equipment.

[0008] In a preferred embodiment, the clamping piece is provided with a reinforcing ring on its inner outer surface, and a force-bearing groove is provided on the outer surface of the clamping piece away from the threaded groove.

[0009] By adopting the above technical solution, the reinforcing ring provides better physical performance for the connection of the clips, and the force groove makes it convenient for users to apply force to the clips using screwdrivers or other tools.

[0010] In a preferred embodiment, a reference force ring is movably sleeved on the outer surface of the valve body near the adjusting plate.

[0011] By adopting the above technical solution, the reference force ring can more easily and evenly compress the adjusting plate, which can ensure the stable fixation of the adjusting plate.

[0012] In a preferred embodiment, a gasket is movably fitted onto the outer surface of the valve body between the adjusting plate and the clamping plate.

[0013] By adopting the above technical solution, the gasket is multi-layered, which facilitates good contact between the reference force ring and the adjusting plate, making pressure adjustment convenient.

[0014] In a preferred embodiment, the outer filter ring has filter holes on its outer surface between the corresponding adjustment plates.

[0015] By adopting the above technical solution, the impurities collected by the pressure regulating plate and the oil in the pipeline are easily overflowed by the filter hole, further reducing waste.

[0016] In a preferred embodiment, a central sealing block is provided on the outer surface of the valve body.

[0017] By adopting the above technical solution, the central sealing block, as the sealing part in the middle of the valve core, is the main functional part of the valve core.

[0018] In a preferred embodiment, displacement force-bearing blocks are provided on the outer surfaces of both ends of the valve body, and anti-displacement gaskets are welded to the outer surfaces of both ends of the valve body.

[0019] By adopting the above technical solution, the valve core is subjected to force by the displacement force blocks on both sides to complete the corresponding displacement, thereby achieving the required pipeline switching. The anti-displacement gasket facilitates the force on the reset spring.

[0020] In a preferred embodiment, the adjusting plate is made of aluminum alloy, and the middle of the adjusting plate is filled with glass wool.

[0021] By adopting the above technical solutions, the aluminum alloy material has high elasticity and corrosion resistance, which facilitates the adjustment of the adjustment plate, while the glass wool material has high temperature resistance and porous properties, which facilitates the adhesion of impurities.

[0022] In summary, due to the adoption of the above technical solution, the beneficial effects of this application are: In this application, the directional valve core is constructed entirely of tungsten steel. Tungsten steel is renowned for its excellent hardness and wear resistance, maintaining its strength and hardness at high temperatures. It is particularly suitable for applications requiring high pressure and frequent friction. The main body is consistent with traditional valve cores, with the valve body, side sealing block, center sealing block, and displacement force-bearing block integrated into one unit to achieve the main function. Furthermore, a filtration space is formed by the outer filter rings, adjusting plates, and inner protective rings on both sides of the side sealing block. The outer side is sealed by clamping plates. The rotation of the corresponding grooves and threads on the clamping plates causes them to move inward and outward. The aluminum alloy adjusting plate has good deformation and resilience, which allows for adjustment of the plate's tilt angle. When the valve core oil circuit switches, the impact force generated by the oil circuit pressure is buffered to a certain extent by the adjusting plate at the clamping plate. At the same time, when there are impurities in the oil circuit, the impact force traps the large and hard impurities in the filter space. After continuous filtration, the oil overflows through the outer filter ring, and the clamping plate moves inward and outward. On the one hand, it adjusts the gap between the outer filter ring and the clamping plate, leaving impurities in the adjusting plate and reducing the frequency of valve core replacement. On the other hand, it adjusts the buffering effect of the oil circuit, ensuring the durability of the equipment. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall shape of the valve core in this application; Figure 2 This is a schematic diagram showing the adjusted shape in this application; Figure 3 This is a schematic diagram of the structural disassembly in this application; Figure 4 This is a frontal view of the adjusted structure in this application; Figure 5 This is a schematic diagram of the internal structure of the adjusted structure in this application.

[0024] The markings in the diagram are: 1. Valve body; 2. Side sealing block; 3. Outer filter ring; 4. Adjusting plate; 5. Inner protective ring; 6. Threaded groove; 7. Clamping plate; 8. Reinforcing ring; 9. Force groove; 10. Gasket; 11. Reference force ring; 12. Filter hole; 13. Center sealing block; 14. Displacement force block; 15. Anti-displacement gasket. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the embodiments of this application. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. Example

[0026] Reference Figure 1-5 A directional valve core structure includes a valve body 1, a side sealing block 2 on the outer surface of the valve body 1, inner protective rings 5 ​​welded to the outer surfaces of the valve body 1 corresponding to the side sealing block 2, adjusting plates 4 welded to the outer surface of the inner protective rings 5, an outer filter ring 3 welded to the outer surface of the side sealing block 2, a threaded groove 6 on the outer side of the valve body 1 corresponding to the inner protective ring 5, and a clamping plate 7 on the outer surface of the valve body 1 corresponding to the threaded groove 6.

[0027] Based on the main function, a filtration space is formed by the outer filter ring 3, adjusting plate 4, and inner protective ring 5 on both sides of the side sealing block 2. The outer side is sealed by the clamping plate 7. The corresponding groove and threaded groove 6 of the clamping plate 7 rotates, causing the clamping plate 7 to move inward and outward. The aluminum alloy material of the adjusting plate 4 has good deformation and resilience, thereby adjusting the tilt angle of the adjusting plate 4. When the valve core oil circuit is switched, the impact force generated by the pressure of the oil circuit is buffered to a certain extent by the adjusting plate 4 at the clamping plate 7. At the same time, when there are impurities in the oil circuit, the impact force will trap the impurities with large mass and hardness in the filtration space. After continuous filtration, the oil overflows through the outer filter ring 3. The clamping plate 7 moves inward and outward, adjusting the gap between the outer filter ring 3 and the clamping plate 7 to leave impurities in the adjusting plate 4, reducing the frequency of valve core replacement, and adjusting the buffering effect of the oil circuit to ensure the durability of the equipment.

[0028] Reference Figure 1-4 The clamping piece 7 has a reinforcing ring 8 on its inner outer surface and a force-bearing groove 9 on its outer surface away from the threaded groove 6.

[0029] The reinforcing ring 8 provides better physical performance for the connection of the clip 7, and the force groove 9 makes it convenient for users to apply force to the clip 7 using screwdrivers or other tools.

[0030] Reference Figure 1-3 A reference force ring 11 is movably sleeved on the outer surface of the valve body 1 near the adjusting plate 4.

[0031] The reference force ring 11 facilitates better and more uniform compression of the adjusting plate 4, which can ensure the stable fixation of the adjusting plate 4.

[0032] Reference Figure 1-3 A gasket 10 is movably sleeved on the outer surface of the valve body 1 between the adjusting plate 4 and the clamping plate 7.

[0033] The gasket 10 is designed with multiple layers to facilitate good contact between the reference force ring 11 and the adjusting plate 4, thus facilitating pressure adjustment.

[0034] Reference Figure 1-3 The outer surface of the outer filter ring 3 is provided with filter holes 12 between the corresponding adjustment plate 4.

[0035] Because the pressure adjusts the impurities collected by the regulating plate 4 and the oil in the pipeline, the filter hole 12 facilitates the overflow of the internal oil, further reducing waste.

[0036] Reference Figure 1 A central sealing block 13 is provided on the outer surface of the valve body 1.

[0037] The central sealing block 13, as the sealing part in the middle of the valve core, is the main functional part of the valve core.

[0038] Reference Figure 1 Displacement force blocks 14 are provided on the outer surfaces of both ends of valve body 1, and anti-displacement gaskets 15 are welded on the outer surfaces of both ends of valve body 1.

[0039] The valve core is subjected to force by the displacement force blocks 14 on both sides to complete the corresponding displacement, thereby achieving the required pipeline switching. The anti-displacement gasket 15 facilitates the force on the reset spring.

[0040] Reference Figure 1 , 5 The adjusting plate 4 is made of aluminum alloy and is filled with glass wool.

[0041] The aluminum alloy material has high elasticity and corrosion resistance, making it easy to adjust the adjustment plate 4. The glass wool material has high temperature resistance and porous properties, making it easy for impurities to adhere.

[0042] The implementation principle of one embodiment of the directional valve core structure in this application is as follows: The valve core of this directional valve is constructed entirely of tungsten steel. Tungsten steel is renowned for its excellent hardness and wear resistance, maintaining its strength and hardness at high temperatures. It is particularly suitable for applications requiring high pressure and frequent friction. The main body is consistent with traditional valve cores, consisting of an integrated valve body 1, side sealing block 2, center sealing block 13, and displacement force-bearing block 14, thus fulfilling the main function. Furthermore, a filtration space is formed by the outer filter ring 3, adjusting plate 4, and inner protective ring 5 on both sides of the side sealing block 2. The outer side is sealed by clamping plates 7. The rotation of the grooved threaded slot 6 corresponding to the clamping plates 7 causes them to move inward and outward. The aluminum alloy adjusting plate 4 has good deformation and resilience, thereby adjusting the tilt angle of the adjusting plate 4. When the valve core oil circuit is switched, the impact force generated by the pressure in the oil circuit is buffered to a certain extent by the adjusting plate 4 at the clamping plate 7. At the same time, when there are impurities in the oil circuit, the impact force will trap the impurities with large mass and hardness in the filter space. After continuous filtration, the oil overflows through the outer filter ring 3. The clamping plate 7 moves inward and outward, adjusting the gap between the outer filter ring 3 and the clamping plate 7 to leave impurities in the adjusting plate 4, reducing the frequency of valve core replacement, and adjusting the buffering effect of the oil circuit to ensure the durability of the equipment.

[0043] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A directional valve core structure, comprising a valve body (1), characterized in that: The valve body (1) has a side sealing block (2) on its outer surface. The valve body (1) has an inner protective ring (5) welded on both sides of the outer surface of the side sealing block (2). The inner protective ring (5) has an adjusting plate (4) welded on its outer surface. The side sealing block (2) has an outer filter ring (3) welded on its outer surface. The valve body (1) has a threaded groove (6) on its outer side of the inner protective ring (5). The valve body (1) has a clamping plate (7) on its outer side of the threaded groove (6).

2. The valve core structure of a directional valve as described in claim 1, characterized in that: The clamping piece (7) has a reinforcing ring (8) on its inner outer surface, and a force-bearing groove (9) is provided on the outer surface of the clamping piece (7) away from the threaded groove (6).

3. The valve core structure of a directional valve as described in claim 1, characterized in that: A reference force ring (11) is movably sleeved on the outer surface of the valve body (1) near the adjusting plate (4).

4. The valve core structure of a directional valve as described in claim 1, characterized in that: The valve body (1) has a gasket (10) movably sleeved on its outer surface between the adjustment plate (4) and the clamp plate (7).

5. The valve core structure of a directional control valve as described in claim 1, characterized in that: The outer surface of the outer filter ring (3) is provided with filter holes (12) between the corresponding adjustment piece (4).

6. The valve core structure of a directional control valve as described in claim 1, characterized in that: A central sealing block (13) is provided on the outer surface of the valve body (1).

7. The valve core structure of a directional valve as described in claim 1, characterized in that: The valve body (1) has displacement force blocks (14) on the outer surfaces of both ends, and anti-displacement gaskets (15) are welded on the outer surfaces of both ends.

8. The valve core structure of a directional control valve as described in claim 1, characterized in that: The adjusting plate (4) is made of aluminum alloy and is filled with glass wool in the middle.

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