Combined oil seal for adjusting screw

Abstract

The combined oil seal comprises a hydraulic part and an oil seal body, the oil seal body comprises a supporting end cover and a sealing part, the supporting end cover is of a hard plate-shaped structure, a through hole is formed in the center of the supporting end cover, the sealing part is made of plastic nonmetal materials, a through hole is formed in the center of the sealing part, and the sealing part comprises an upper section and a lower section. The supporting end cover wraps the outer surface of the upper section of the sealing piece, the lower section of the supporting end cover is of a conical structure, the oil seal is arranged at the connecting position of the adjusting screw rod and the valve body in the hydraulic piece, and the adjusting screw rod and the valve body are assembled in an adjustable mode.

Description

Technical Field

[0001] This utility model is a combined oil seal for adjusting screws. Background Technology

[0002] Combination oil seals primarily seal the end faces of hydraulic components. During operation, the upper and lower parts of the combination oil seal are compressed together, causing the compressed rubber component to fill the gaps in the inner wall as much as possible, thus achieving a sealing effect. However, this type of combination oil seal has high requirements for the end faces and cannot seal dynamically adjusting screws. When the adjusting screw needs to be adjusted during operation, if the tightening nut is loosened, hydraulic oil will quickly leak out from the gaps in the combination oil seal, causing hydraulic oil leakage. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a combined oil seal for adjusting screws.

[0004] A combined oil seal for adjusting a screw includes a hydraulic component and an oil seal. The oil seal includes a support end cap and a sealing element. The support end cap is a rigid plate-like structure with a through hole in its center. The sealing element is made of a malleable non-metallic material and also has a through hole in its center. It includes an upper section and a lower section. The support end cap covers the outer surface of the upper section of the sealing element, and the lower section has a conical structure. The oil seal is located at the connection position between the adjusting screw and the valve body in the hydraulic component, and the adjusting screw and the valve body are adjustablely assembled.

[0005] Furthermore, the hydraulic components include a valve body, a valve core, and a screw. The valve body has an oil chamber, an oil inlet passage, and an oil outlet passage inside. One end of the oil outlet passage is connected to the outside of the valve body, and the other end is connected to the oil chamber. The oil inlet passage is located below the oil chamber, and the oil inlet passage and the oil chamber are connected by a transition oil passage. The upper and lower sections of the valve core have an outer circular step at the junction. The upper section is fitted with a spring, and the lower section slides in cooperation with the transition oil passage. The oil chamber has a mounting hole above it, and a screw passes through the mounting hole. The part of the screw extending out of the mounting hole is fitted with an oil seal and a nut. The oil seal is located between the nut and the valve body. The two ends of the spring abut against the outer circular step and the bottom surface of the screw, respectively.

[0006] Furthermore, the lower section of the valve core has a tapered structure.

[0007] Furthermore, the mounting hole has a chamfered edge at its port.

[0008] Furthermore, the upper end face of the lower section of the seal is connected to the lower end face of the upper section, the width of the upper end of the lower section is smaller than the width of the lower section of the upper section, and a circumferential V-shaped notch is provided on the outer side of the edge at the connection between the upper and lower sections.

[0009] Furthermore, the upper section of the seal is a stepped structure, and the support end cap is fitted onto the stepped structure.

[0010] Furthermore, the support end cap has a downward-facing flange at its edge, and the inner wall of the flange is connected to the outer wall of the upper section of the seal.

[0011] Beneficial effects: Compared with the prior art, this utility model, by using a supporting end cap and a sealing element made of malleable non-metallic material to form an oil seal, can better adapt to hydraulic structures with adjusting screws. Specific advantages are as follows:

[0012] An oil seal consists of a rigid support end cap and a malleable sealing element. This combination design ensures the stability and sealing performance of the oil seal in its installation position. The malleable material of the sealing element can adapt to different assembly gaps and pressure variations, providing a long-lasting seal.

[0013] The oil seal is positioned at the connection point between the adjusting screw and the valve body in the hydraulic components, allowing for greater flexibility in the assembly of the entire system. This design allows for fine-tuning according to actual needs, improving the system's adaptability and functionality.

[0014] The meticulous design of the internal oil chamber, inlet, and outlet channels of the valve component ensures smooth oil flow and effective control. The transition channel allows the valve core to move smoothly within the oil chamber while maintaining the dynamic balance of the oil.

[0015] The spring fitted on the upper part of the valve core provides stable support for the valve core, ensuring its stability and response speed during movement. The two ends of the spring abut against the outer circular step and the bottom surface of the screw, respectively, forming an effective path for force transmission.

[0016] The lower section of the valve core and the lower section of the seal adopt a tapered structure design. This design helps to reduce fluid resistance, improve the flow efficiency of the oil, and help to form a tighter seal during assembly.

[0017] The chamfered edge of the mounting hole makes the installation of the screw and oil seal easier, reducing friction and damage during assembly. The V-shaped notch design at the connection between the upper and lower sections of the seal enhances the seal's elasticity and adaptability.

[0018] The flanged structure at the edge of the support end cap not only enhances the overall stability of the oil seal, but also ensures a tight connection between the seal and the support end cap, further improving the sealing performance. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the oil seal assembly;

[0020] Figure 2This is an assembly drawing of an oil seal in a hydraulic component with a non-chamfered mounting hole;

[0021] Figure 3 yes Figure 2 A schematic diagram of the central sealing component after it has been deformed by compression.

[0022] Figure 4 This is an assembly drawing of an oil seal in a hydraulic component with a chamfered mounting hole;

[0023] Figure 5 yes Figure 4 A schematic diagram of the central sealing component after it has been deformed by compression.

[0024] Figure 6 This is a schematic diagram of a valve body without chamfered edges;

[0025] Figure 7 This is a schematic diagram of a valve body with a chamfered structure;

[0026] In the diagram, 1 is the seal, 2 is the support end cap, 3 is the notch, 4 is the screw, 5 is the nut, 6 is the valve body, 7 is the spring, 8 is the valve core, 9 is the oil chamber, 10 is the mounting hole, 11 is the oil inlet passage, 12 is the oil outlet passage, 13 is the transition oil passage, and 14 is the chamfer. Detailed Implementation

[0027] To enhance understanding of this utility model, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. These embodiments are only used to explain the present utility model and do not constitute a limitation on the scope of protection of the present utility model.

[0028] like Figure 1-7 As shown, the components are: 1. Seal; 2. Support end cap; 3. Notch; 4. Screw; 5. Nut; 6. Valve body; 7. Spring; 8. Valve core; 9. Oil chamber; 10. Mounting hole; 11. Oil inlet passage; 12. Oil outlet passage; 13. Transition oil passage; 14. Chamfer.

[0029] A combined oil seal for adjusting a screw includes a hydraulic component and an oil seal. The oil seal includes a support end cap 2 and a sealing element 1. The support end cap 2 is a rigid plate-like structure with a through hole in its center. The sealing element 1 is made of a malleable non-metallic material with a through hole in its center. It includes an upper section and a lower section. The support end cap 2 covers the outer surface of the upper section of the sealing element 1, and its lower section is a conical structure. The oil seal is located at the connection position between the adjusting screw 4 and the valve body 6 in the hydraulic component. The adjusting screw 4 and the valve body 6 are adjustablely assembled.

[0030] In this example, the hydraulic components include a valve body, a valve core 8, and a screw 4. The valve body has an oil chamber 9, an oil inlet passage 11, and an oil outlet passage 12. One end of the oil outlet passage 12 is connected to the outside of the valve body, and the other end is connected to the oil chamber 9. The oil inlet passage 11 is located below the oil chamber 9 and is connected to the oil chamber 9 through a transition oil passage 13. The valve core 8 has an outer circular step at the junction of its upper and lower sections. The upper section is fitted with a spring 7, and the lower section slides in cooperation with the transition oil passage 13. The oil chamber 9 has a mounting hole 10 above it. The screw 4 passes through the mounting hole 10. The part of the screw 4 extending out of the mounting hole 10 is fitted with an oil seal and a nut 5. The oil seal is located between the nut 5 and the valve body. The two ends of the spring 7 abut against the outer circular step and the bottom surface of the screw 4, respectively.

[0031] In this example, the lower section of the valve core 8 has a conical structure.

[0032] In this example, the mounting hole 10 has a chamfered edge 14 at its port edge.

[0033] In this example, the upper end face of the lower section of the seal 1 is connected to the lower end face of the upper section, the width of the upper end of the lower section is smaller than the width of the lower section of the upper section, and a circumferential V-shaped notch 3 is provided on the outer side of the edge where the upper and lower sections connect.

[0034] In this example, the upper section of the seal 1 is a stepped structure, and the support end cap 2 is fitted onto the stepped structure.

[0035] In this example, the support end cover 2 has a downward flange at its edge, and the inner wall of the flange is connected to the outer wall of the upper section of the seal 1.

[0036] Instructions for use: Place the oil seal on the screw 4, adjust the screw 4 to the desired position, and tighten the nut 5. The nut 5 applies pressure to the support end cap 2, which in turn applies pressure to the plastic non-metallic sealing element 1. Due to the characteristics of the material of the sealing element 1, it begins to deform laterally under pressure, gradually filling the gap between the screw 4 and the mounting hole 10, as well as the gap between the threads of the screw 4 itself. When the lower end face of the flange of the support end cap 2 contacts the surface of the valve body 6, stop tightening the nut 5, that is, stop applying pressure to the sealing element 1, limiting the degree of deformation of the sealing element 1 and preventing excessive deformation from affecting the sealing effect. During the process of applying pressure to the support end cap 2, the V-shaped notch 3 at the junction of the upper and lower sections of the sealing element 1 helps the sealing element 1 deform inward, preventing the sealing element 1 from exceeding the flange during lateral deformation. The tapered structure of the lower section of the sealing element 1 also prevents deformation from exceeding the flange range.

[0037] 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 combined oil seal for adjusting a screw, characterized in that, The system includes hydraulic components and an oil seal. The oil seal includes a support end cap and a sealing element. The support end cap is a rigid plate-like structure with a through hole in its center. The sealing element is made of a malleable non-metallic material with a through hole in its center. It includes an upper section and a lower section. The support end cap covers the outer surface of the upper section of the sealing element, and the lower section is a conical structure. The oil seal is located at the connection position between the adjusting screw and the valve body in the hydraulic components. The adjusting screw and the valve body are adjustablely assembled.

2. The combined oil seal for adjusting a screw according to claim 1, characterized in that, The hydraulic components include a valve body, a valve core, and a screw. The valve body has an oil chamber, an oil inlet passage, and an oil outlet passage inside. One end of the oil outlet passage is connected to the outside of the valve body, and the other end is connected to the oil chamber. The oil inlet passage is located below the oil chamber and is connected to the oil chamber through a transition oil passage. The valve core has an outer circular step at the junction of its upper and lower sections. A spring is fitted on the upper section, and the lower section slides in fit with the transition oil passage. The oil chamber has a mounting hole above it, and a screw passes through the mounting hole. The part of the screw extending out of the mounting hole is fitted with an oil seal and a nut. The oil seal is located between the nut and the valve body. The two ends of the spring abut against the outer circular step and the bottom surface of the screw, respectively.

3. A combined oil seal for adjusting a screw according to claim 2, characterized in that, The lower section of the valve core has a conical structure.

4. A combined oil seal for adjusting a screw according to claim 2, characterized in that, The mounting hole has a chamfered edge.

5. A combined oil seal for adjusting a screw according to claim 1, characterized in that, The upper end face of the lower section of the seal is connected to the lower end face of the upper section. The width of the upper end of the lower section is smaller than the width of the lower section. A circumferential V-shaped notch is provided on the outer side of the edge where the upper and lower sections connect.

6. A combined oil seal for adjusting a screw according to claim 1, characterized in that, The upper section of the seal is a stepped structure, and the support end cap is fitted onto the stepped structure.

7. A combined oil seal for adjusting a screw according to claim 1, characterized in that, The support end cap has a downward-facing flange at its edge, and the inner wall of the flange is connected to the outer wall of the upper section of the seal.

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