CN217582659U - Pressure regulating device for spring type hydraulic valve - Google Patents
Pressure regulating device for spring type hydraulic valve Download PDFInfo
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- CN217582659U CN217582659U CN202221556514.1U CN202221556514U CN217582659U CN 217582659 U CN217582659 U CN 217582659U CN 202221556514 U CN202221556514 U CN 202221556514U CN 217582659 U CN217582659 U CN 217582659U
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- pressure regulating
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- end cover
- hydraulic valve
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Abstract
The utility model discloses a pressure regulating device for spring hydrovalve, include the pressure regulating end cover and establish the pressure regulating subassembly on the pressure regulating end cover. The pressure regulating end cover is used for being fixedly connected with a valve body of the hydraulic valve to be regulated, and the pressure regulating end cover is provided with a first regulating hole used for being connected with the pressure regulating assembly. The pressure regulating subassembly upper end is equipped with connecting portion, and connecting portion cooperate the pressure regulating subassembly through the screw thread with first regulation hole on the pressure regulating end cover, and connecting portion rotate for the pressure regulating end cover, can make the pressure regulating subassembly along the axis direction motion of waiting to regulate pressure hydraulic valve's pressure spring. The pressure regulating assembly lower extreme is equipped with the annular portion coaxial with connecting portion, and annular portion is used for contacting with pressure spring's up end, and pressure regulating assembly moves along pressure spring's axis direction, can adjust pressure spring's compressive capacity through annular portion. Use the utility model discloses, can solve the current mode that carries out pressure adjustment to the hydrovalve and can not take the area to operate, need the complex operation's that multiple adjustment leads to technical problem.
Description
Technical Field
The utility model belongs to the technical field of the hydraulic equipment technique and specifically relates to a pressure regulating device for spring hydrovalve.
Background
In the prior art, a hydraulic valve compresses a piston through a spring to generate pressure. Due to machining errors of parts and slight differences in spring stiffness, the actual pressure may deviate from the design value, and it is necessary to make the actual pressure coincide with the design value by finely adjusting the compression amount of the spring. The adjustment of the pressure is usually achieved by adding shims to adjust the amount of compression of the spring.
The pressure regulating gasket is installed in the hydraulic valve body, and the machine needs to be stopped to release pressure during adjustment, and the valve body is disassembled. After the gasket is added and reassembled, observation and adjustment results are started. If the pressure after one adjustment is still not consistent with the design value, the machine is stopped to release the pressure for adjustment.
The existing pressure adjusting mode is complicated, operation under pressure can not be carried out, the uncertainty of an adjusting result at each time is large, the valve body is usually required to be disassembled and assembled for many times, the quantity of pressure adjusting gaskets is increased and decreased, the pressure can be enabled to accord with a design value, and the working efficiency is low.
Disclosure of Invention
The utility model aims at providing a pressure regulating device for spring hydrovalve can solve the current mode that carries out pressure adjustment to the hydrovalve and can not take the area to operate, needs the complex operation's that multiple adjustment leads to technical problem.
In order to achieve the above purpose, the utility model adopts the following technical scheme.
A pressure regulating device for a spring type hydraulic valve comprises a pressure regulating end cover and a pressure regulating assembly arranged on the pressure regulating end cover.
The pressure regulating end cover is used for being fixedly connected with a valve body of the hydraulic valve to be regulated, and the pressure regulating end cover is provided with a first regulating hole used for being connected with the pressure regulating assembly.
The pressure regulating subassembly upper end is equipped with connecting portion, and connecting portion cooperate the pressure regulating subassembly through the screw thread with first regulation hole on the pressure regulating end cover, and connecting portion rotate for the pressure regulating end cover, can make the pressure regulating subassembly along the axis direction motion of waiting to regulate pressure hydraulic valve's pressure spring.
The pressure regulating assembly lower extreme is equipped with the annular portion coaxial with connecting portion, and annular portion is used for contacting with pressure spring's up end, and pressure regulating assembly moves along pressure spring's axis direction, can adjust pressure spring's compressive capacity through annular portion.
Further, the pressure regulating assembly comprises an outer pressure regulating rod and an inner pressure regulating rod which are coaxially arranged.
The upper end of the outer pressure regulating rod is provided with a first connecting part, the first connecting part and the first regulating hole are matched with each other through threads to rotatably connect the outer pressure regulating rod to the pressure regulating end cover, the lower end of the outer pressure regulating rod is provided with a first annular part coaxial with the first connecting part, and the first annular part is used for contacting with the upper end face of a large pressure spring of the hydraulic valve to be regulated.
The upper end of the inner pressure regulating rod is provided with a second connecting part, the second connecting part is matched with a second regulating hole arranged at the center of the first connecting part through threads to rotatably connect the inner pressure regulating rod with the outer pressure regulating rod, the lower end of the inner pressure regulating rod is provided with a second annular part coaxial with the second connecting part, and the second annular part is used for contacting with the upper end face of a small pressure spring of the hydraulic valve to be regulated.
Further, first connecting portion and second connecting portion top all are equipped with and are used for making things convenient for pivoted square structure.
Further, first connecting portion top is equipped with and is used for the dead first lock nut of outer pressure regulating pole and pressure regulating end cover lock, and second connecting portion top is equipped with and is used for the dead second lock nut of interior pressure regulating pole and outer pressure regulating pole lock.
Furthermore, sealing rings for sealing are arranged between the outer pressure regulating rod and the pressure regulating end cover and between the inner pressure regulating rod and the outer pressure regulating rod.
After the technical scheme is adopted, the utility model discloses following beneficial effect has:
1. the utility model can adjust the compression amount of the spring in the hydraulic valve under pressure, thereby adjusting the pressure of the spring, leading the pressure generated by the spring to be consistent with the design value, and adding the gasket with the same thickness according to the adjusted compression amount, thereby completing the pressure adjustment work at one time;
2. the utility model can independently operate the big and small pressure springs in the hydraulic valve, realize the rapid change of the pressure range by adjusting the big pressure spring, and realize the fine adjustment of the pressure by adjusting the small pressure spring;
3. the utility model discloses simple structure is compact, convenient to use.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is an enlarged schematic view at a in fig. 1.
Fig. 3 is a schematic view in the direction B-B in fig. 1.
Fig. 4 is a diagram showing a state before voltage adjustment.
Fig. 5 is a diagram showing a state after voltage adjustment.
FIG. 6 is a schematic view of the state of the replacement trim pad after pressure adjustment.
Description of the drawings: 1. pressure regulating end cover, 2, outer pressure regulating pole, 21, first connecting portion, 22, first annular portion, 23, first lock nut, 3, interior pressure regulating pole, 31, second connecting portion, 32, second annular portion, 33, second lock nut, 41, valve body, 411, oil inlet, 412, oil-out, 42, big pressure spring, 43, little pressure spring, 44, piston, 45, valve gap, 46, big gasket, 47, little gasket.
Detailed Description
In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the following description is made in detail with reference to the accompanying drawings and examples, and the features and performance of the pressure adjusting device for a spring type hydraulic valve according to the present invention are further described.
Referring to fig. 1 to 3, a pressure regulating device for a spring type hydraulic valve includes a pressure regulating end cover 1 and a pressure regulating assembly disposed on the pressure regulating end cover 1.
The pressure regulating end cover 1 is used for being fixedly connected with a valve body 41 of a hydraulic valve to be regulated, and the pressure regulating end cover 1 is provided with a first regulating hole used for being connected with a pressure regulating assembly.
The pressure regulating subassembly upper end is equipped with connecting portion, and connecting portion cooperate through the screw thread with first regulation hole, connects the pressure regulating subassembly on pressure regulating end cover 1, and connecting portion rotate for pressure regulating end cover 1, can make the pressure regulating subassembly along the axis direction motion of waiting to regulate pressure hydraulic valve's pressure spring.
The pressure regulating assembly lower extreme is equipped with the annular portion coaxial with connecting portion, and annular portion is used for contacting with pressure spring's up end, and pressure regulating assembly moves along pressure spring's axis direction, can adjust pressure spring's compressive capacity through annular portion.
Further, the pressure regulating assembly comprises an outer pressure regulating rod 2 and an inner pressure regulating rod 3 which are coaxially arranged.
The upper end of the outer pressure regulating rod 2 is provided with a first connecting part 21, the first connecting part 21 is matched with the first regulating hole, and the outer pressure regulating rod 2 is rotatably connected to the pressure regulating end cover 1. The lower end of the outer pressure regulating rod 2 is provided with a first annular part 22 which is coaxial with the first connecting part 21, and the first annular part 22 is used for contacting with the upper end face of a large pressure spring 42 of the hydraulic valve to be regulated.
The upper end of the inner pressure regulating rod 3 is provided with a second connecting part 31, the second connecting part 31 is matched with a second regulating hole arranged at the center of the first connecting part 21 through threads, and the inner pressure regulating rod 3 is rotatably connected with the outer pressure regulating rod 2. The lower end of the inner pressure regulating rod 3 is provided with a second annular part 32 which is coaxial with the second connecting part 31, and the second annular part 32 is used for contacting with the upper end surface of a small pressure spring 43 of the hydraulic valve to be regulated.
The outer pressure regulating rod 2 and the inner pressure regulating rod 3 can independently move along the common axis of the large pressure spring 42 and the small pressure spring 43 relative to the pressure regulating end cover 1, and the compression amount of the large pressure spring 42 or the small pressure spring 43 can be independently regulated.
Further, the top ends of the first connecting portion 21 and the second connecting portion 31 are provided with square structures for facilitating rotation.
Furthermore, a first locking nut 23 for locking the outer pressure regulating rod 2 and the pressure regulating end cover 1 is arranged at the top end of the first connecting part 21. The top end of the second connecting part 31 is provided with a second locking nut 33 used for locking the inner pressure regulating rod 3 and the outer pressure regulating rod 2.
Further, sealing rings for sealing are arranged between the outer pressure regulating rod 2 and the pressure regulating end cover 1 and between the inner pressure regulating rod 3 and the outer pressure regulating rod 2.
In specific implementation, the valve cover 45 of the hydraulic valve to be pressure-regulated is firstly detached, the pressure regulating device is installed on the valve body 41, and as shown in fig. 1, the pressure regulating end cover 1 is fixedly connected to the valve body 41, so that the first annular portion 22 and the second annular portion 32 correspond to the upper end surfaces of the large pressure spring 42 and the small pressure spring 43, respectively. And loosening the first locking nut 23 and the second locking nut 33, and rotating the outer pressure regulating rod 2 and the inner pressure regulating rod 3 through a square structure by using a wrench to enable the pressure regulating rods to rise to the highest position along the axis.
An oil inlet 411 and an oil outlet 412 on the valve body 41 are connected into a hydraulic system, hydraulic oil enters an oil cavity between the valve body 41 and the piston 44 through the oil inlet 411, the pressure of the hydraulic oil pushes the piston 44 to move upwards against the elastic forces of the large pressure spring 42 and the small pressure spring 43, when the piston 44 moves to the oil outlet 412 and is communicated with the oil cavity, the hydraulic oil flows out through the oil outlet 412, and at the moment, the spring elastic force and the hydraulic oil pressure reach dynamic balance, as shown in fig. 4.
In the pressurized state, the outer and inner pressure adjusting levers 2 and 3 are rotated by a wrench through a square structure, so that the first and second annular portions 22 and 32 compress the large and small pressure springs 42 and 43, respectively, downward. As the spring is compressed, the elastic force is increased, and the pressure of the hydraulic oil is synchronously increased to maintain a balanced state.
And continuously adjusting until the pressure displayed by the hydraulic system is the same as the designed pressure value of the hydraulic valve to be adjusted, locking the first locking nut 23 and the second locking nut 33, locking the outer pressure adjusting rod 2 and the pressure adjusting end cover 1, and locking the inner pressure adjusting rod 3 and the outer pressure adjusting rod 2, as shown in fig. 5.
And closing the hydraulic system, removing the pressure regulating end cover 1, and calculating the compressed amount of the large pressure spring 42 and the small pressure spring 43 according to the axial displacement distance of the first annular part 22 and the second annular part 23.
The number of large shims 46 and small shims 47 to be added is converted according to the amount of compression of the large pressure spring 42 and the small pressure spring 43 and the structural size of the valve cover 45, wherein the large shims 46 are used for adjusting the large pressure spring 42, and the small shims 47 are used for adjusting the small pressure spring 43. The large gasket 46 and the small gasket 47 are installed in the valve cover 45, and then the valve cover 45 is installed on the valve body 41, as shown in fig. 6, the pressure regulating work of the hydraulic valve to be regulated is completed.
It should be noted that the above embodiments are only used for illustrating the present invention, but the present invention is not limited to the above embodiments, and any simple modification, equivalent change and modification made to the above embodiments by the technical spirit of the present invention all fall into the protection scope of the present invention.
Claims (5)
1. The utility model provides a pressure regulating device for spring hydrovalve which characterized in that: comprises a pressure regulating end cover (1) and a pressure regulating component arranged on the pressure regulating end cover (1),
the pressure regulating end cover (1) is used for being fixedly connected with a valve body (41) of the hydraulic valve to be regulated, the pressure regulating end cover (1) is provided with a first regulating hole used for being connected with a pressure regulating component,
the upper end of the pressure regulating component is provided with a connecting part which is matched with the first regulating hole through threads to connect the pressure regulating component to the pressure regulating end cover (1), the connecting part rotates relative to the pressure regulating end cover (1) to enable the pressure regulating component to move along the axial direction of a pressure spring of the hydraulic valve to be regulated,
the pressure regulating assembly lower extreme is equipped with the annular portion coaxial with connecting portion, and annular portion is used for contacting with pressure spring's up end, and pressure regulating assembly moves along pressure spring's axis direction, can adjust pressure spring's compressive capacity through annular portion.
2. The pressure regulating apparatus for a spring-loaded hydraulic valve as claimed in claim 1, wherein: the pressure regulating component comprises an outer pressure regulating rod (2) and an inner pressure regulating rod (3) which are coaxially arranged,
the upper end of the outer pressure regulating rod (2) is provided with a first connecting part (21), the first connecting part (21) is matched with a first regulating hole through threads to rotatably connect the outer pressure regulating rod (2) to the pressure regulating end cover (1), the lower end of the outer pressure regulating rod (2) is provided with a first annular part (22) which is coaxial with the first connecting part (21), the first annular part (22) is used for contacting with the upper end surface of a large pressure spring (62) of a hydraulic valve to be regulated,
the upper end of the inner pressure regulating rod (3) is provided with a second connecting part (31), the second connecting part (31) is matched with a second adjusting hole arranged at the center of the first connecting part (21) through threads to rotatably connect the inner pressure regulating rod (3) and the outer pressure regulating rod (2), the lower end of the inner pressure regulating rod (3) is provided with a second annular part (32) coaxial with the second connecting part (31), and the second annular part (32) is used for contacting with the upper end face of a small pressure spring (63) of the hydraulic valve to be pressure regulated.
3. The pressure regulating apparatus for a spring-loaded hydraulic valve as set forth in claim 2, wherein: the top ends of the first connecting part (21) and the second connecting part (31) are provided with square structures for facilitating rotation.
4. The pressure regulating apparatus for a spring-loaded hydraulic valve as claimed in claim 3, wherein: first connecting portion (21) top is equipped with and is used for dead first lock nut (23) of outer pressure regulating pole (2) and pressure regulating end cover (1) lock, and second connecting portion (31) top is equipped with and is used for dead second lock nut (33) of interior pressure regulating pole (3) and outer pressure regulating pole (2) lock.
5. A pressure regulating device for a spring-loaded hydraulic valve as claimed in claim 3, characterized in that: sealing rings for sealing are arranged between the outer pressure regulating rod (2) and the pressure regulating end cover (1) and between the inner pressure regulating rod (3) and the outer pressure regulating rod (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221556514.1U CN217582659U (en) | 2022-06-21 | 2022-06-21 | Pressure regulating device for spring type hydraulic valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221556514.1U CN217582659U (en) | 2022-06-21 | 2022-06-21 | Pressure regulating device for spring type hydraulic valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217582659U true CN217582659U (en) | 2022-10-14 |
Family
ID=83531114
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221556514.1U Active CN217582659U (en) | 2022-06-21 | 2022-06-21 | Pressure regulating device for spring type hydraulic valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217582659U (en) |
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2022
- 2022-06-21 CN CN202221556514.1U patent/CN217582659U/en active Active
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