CN219809488U

CN219809488U - Hand valve

Info

Publication number: CN219809488U
Application number: CN202322338943.2U
Authority: CN
Inventors: 蒋建勇
Original assignee: Ningbo City Airtop Pneumatic & Hydraulic Co ltd
Current assignee: Ningbo City Airtop Pneumatic & Hydraulic Co ltd
Priority date: 2023-08-30
Filing date: 2023-08-30
Publication date: 2023-10-10
Anticipated expiration: 2033-08-30

Abstract

The utility model discloses a hand operated valve, which comprises a valve body, wherein the valve body is provided with an air inlet and an air outlet, the upper end of the valve body is connected with a valve cover, a movable block and a deflector rod are arranged on the valve cover, the lower end of the deflector rod is connected with the movable block, the upper end of the deflector rod is fixedly connected with a handle, jackscrews and rotating shafts are arranged in the movable block, jackscrews are symmetrically arranged on two sides of the movable block, a pressing column is arranged in the valve cover, the pressing column is in sliding connection with the valve cover, two valve cavities are arranged in the valve body, a base and a valve rod are arranged in the valve cavity, a diaphragm is arranged at the upper end of the base, an elastic component is propped between the diaphragm and the pressing column, a pagoda spring is arranged in the base, a damping spring is propped between the lower end of the valve rod and the valve body, the upper end of the valve rod is connected with the diaphragm, and when the handle is pulled, the movable block rotates around the center of the rotating shaft to drive the jackscrews to drive the pressing column to move to change the flow direction of fluid, the diaphragm and the valve rod are automatically reset, time and labor are saved, and fatigue of operators are reduced, and noise is reduced.

Description

Hand valve

Technical Field

The utility model relates to the technical field of machinery, in particular to a hand operated valve.

Background

The hand valve is a reversing valve for achieving gas path switching by manually controlling the action of a valve rod, is widely applied to the pneumatic field, and is an important component part on a plurality of machines such as a crane, an excavator, a bulldozer, a feller, a processor and the like.

For example, a manual valve disclosed in Chinese patent application (publication No. CN 206190964U) comprises a valve body, a valve rod, a valve seat and a rear cover, wherein a control handle is hinged in the valve seat, and a dust cover is coated outside the control handle; the wall of the valve seat is provided with a mounting hole, a plug, a spring and a steel ball are sequentially arranged in the mounting hole, and the front end wall of the valve rod is axially provided with a first positioning groove and a second positioning groove; the radial depth of the first positioning groove and the radial depth of the second positioning groove are half of the diameter of the steel ball, and the axial width of the first positioning groove and the axial width of the second positioning groove are equal to the diameter of the steel ball; the dust cover comprises a cover body, a first shrinkage part and a second shrinkage part which are respectively arranged at two ends of the cover body, and an annular bulge which is in locking fit with the first shrinkage part extends from the outer edge of the valve seat port. However, in the above-mentioned hand valve, the operator is required to frequently pull the handle to realize the resetting and the switching of the control air path, the fatigue of the operator is easily increased during the long-time operation, and the hand valve generates larger noise during the operation, so that the improvement is needed.

Disclosure of Invention

Aiming at the defects and shortcomings of the prior art, the utility model provides the hand valve which is simple and reasonable in structure, convenient to operate, capable of automatically resetting the inside, time-saving and labor-saving, capable of reducing fatigue of operators, damping in design and noise in design.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the utility model discloses a hand-operated valve, which comprises a valve body, wherein the valve body is provided with an air inlet and an air outlet, the upper end of the valve body is fixedly connected with a valve cover, a movable block and a deflector rod are movably arranged on the valve cover, the lower end of the deflector rod is fixedly connected with the movable block through threads, the upper end of the deflector rod extends out of the valve cover and is fixedly connected with a handle, jackscrews and rotating shafts are arranged in the movable block, the jackscrews are symmetrically arranged on two sides of the movable block, pressing columns which are in one-to-one correspondence with the jackscrews are arranged in the valve cover, the pressing columns are in sliding connection with the valve cover, two valve cavities are arranged in the valve body, a base and a valve rod are arranged in the valve cavity, a diaphragm is arranged at the upper end of the base, an elastic component is propped between the diaphragm and the pressing columns, a pagoda spring is arranged in the base, a damping spring is propped between the lower end of the valve rod and the valve body, the upper end of the valve rod stretches into the base and is connected with the diaphragm, and when the handle is pulled, the movable block rotates around the rotating shaft to drive the jackscrews to move up and down, so that the diaphragm and the valve rod moves around the rotating shaft to change the flow direction of fluid.

Further, the deflector rod is fixedly connected with the movable block through a hexagonal nut.

Further, the valve cover is provided with a containing groove, the movable block is movably arranged in the containing groove, and the valve cover is also provided with a through hole for the rotating shaft to pass through.

Further, the rotating shaft is provided with an opening check ring.

Further, the pressing column is provided with an annular protrusion which is abutted against and matched with the elastic component.

Further, a spacer bush is arranged between the valve cover and the diaphragm, and the elastic component is arranged in the spacer bush.

Further, the elastic assembly comprises a large spring and a small spring, and the large spring is sleeved outside the small spring.

Further, a dustproof sleeve is sleeved between the valve body and the deflector rod, and a small hole for the deflector rod to penetrate out is formed in the top of the dustproof sleeve.

Further, the valve cover is provided with a mounting groove, and the dust cover is provided with a clamping part matched with the mounting groove in a clamping way.

Further, the mounting groove is an annular groove.

The beneficial effects of the utility model are as follows: according to the hand-operated valve, when no operation is performed, the elastic component, the pagoda spring and the damping spring have certain pretightening force at the initial position, and the deflector rod is kept in the middle position, so that the deflector rod is prevented from moving automatically due to vibration; meanwhile, the restoring force of the spring has initial force during operation, so that the spring is prevented from being sensitive during operation, the impact is reduced, and after the operation is finished, the spring is automatically restored to achieve a labor-saving design, and the fatigue of an operator is reduced; when the hand operated valve is operated, the handle at the upper end is pulled back and forth, so that the jackscrew is controlled to downwards, the internal diaphragm and the valve rod are moved to change the direction, and fluid can flow to one party to be used.

The damping spring has the dual advantages of low frequency and large damping, can eliminate the inherent resonance amplitude phenomenon of the spring, has good damping effect and reduces noise; the valve body is made of aluminum, the aluminum is light, the valve body made of aluminum has good oxidation resistance and sound absorption performance, is not easy to leak, is light in weight and good in quality, and can reduce noise generated when the hand operated valve works; a dustproof sleeve is sleeved between the valve body and the deflector rod, so that the valve body can be protected, and impurities such as dust are prevented from entering the valve body through the deflector rod.

Drawings

FIG. 1 is an overall schematic of the present utility model;

FIG. 2 is an exploded schematic view of the present utility model;

fig. 3 is a schematic representation of the utility model in semi-section.

In fig. 1-3: 1. a valve body; 2. a valve cover; 3. a movable block; 4. a deflector rod; 5. a handle; 6. a jackscrew; 7. a rotating shaft; 8. pressing a column; 9. a valve cavity; 10. a base; 11. a valve stem; 12. a membrane; 13. a pagoda spring; 14. a damping spring; 15. a hexagonal nut; 16. a through hole; 17. a split retainer ring; 18. a spacer bush; 19. a large spring; 20. a small spring; 21. a dust cover; 22. a small hole; 23. a mounting groove; 24. a clamping part; 25. a receiving groove; 26. a first seal ring; 27. a second seal ring; 28. a third seal ring; 29. a fourth seal ring; 30. an annular protrusion.

Detailed Description

The utility model is further described below with reference to the accompanying drawings.

The hand valve comprises a valve body 1, wherein the valve body 1 is provided with an air inlet and an air outlet, the upper end of the valve body 1 is fixedly connected with a valve cover 2, a movable block 3 and a deflector rod 4 are movably arranged on the valve cover 2, the lower end of the deflector rod 4 is fixedly connected with the movable block 3 through threads, the upper end of the deflector rod 4 extends out of the valve cover 2 and is fixedly connected with a handle 5, a jackscrew 6 and a rotating shaft 7 are arranged in the movable block 3, the jackscrew 6 is symmetrically arranged on two sides of the movable block 3, press columns 8 which are in one-to-one correspondence with the jackscrew 6 are arranged in the valve cover 2, the press columns 8 are in sliding connection with the valve cover 2, two valve cavities 9 are arranged in the valve body 1, a base 10 and a valve rod 11 are arranged in the valve cavity 9, a diaphragm 12 is arranged at the upper end of the base 10, an elastic component is propped between the diaphragm 12 and the press columns 8, a damping spring 14 is propped between the lower end of the valve rod 11 and the valve body 1, the upper end of the valve rod 11 is connected with the base 10, when the handle 5 is rotated, the movable block 3 rotates around the rotating shaft 7 to drive the jack screw 6 to drive the diaphragm 12 to move upwards, and the diaphragm 11 moves around the valve rod 12.

Specifically, the air inlet and the air outlet are arranged at the bottom of the valve body 1, the damping spring 14 has the dual advantages of low frequency and large damping, can eliminate the inherent resonance amplitude phenomenon of the spring, has good damping effect and reduces noise; the pagoda spring 13 has large load and is widely used in occasions with small space and large load and damping devices.

According to the hand-operated valve, when no operation is performed, the elastic component, the pagoda spring 13 and the damping spring 14 have certain pretightening force at the initial position, the deflector rod 4 is kept in the middle position, and the deflector rod 4 is prevented from moving automatically due to vibration; meanwhile, the reset force of the spring provides initial force for operation, so that the operation is prevented from being sensitive at the initial time, the impact is reduced, and after the operation is finished, the spring is automatically reset to achieve a labor-saving design, and the fatigue of an operator is reduced; during operation, the handle 5 at the upper end is pulled back and forth, so that the jackscrew 6 is controlled to downwards move the internal diaphragm 12 and the valve rod 11 to change the direction, and fluid can flow to one side to be used.

Specifically, the valve body 1 is made of aluminum, the aluminum is light, the oxidation resistance and the sound absorption performance are good, the valve body 1 made of aluminum is not easy to leak, the weight is light, the quality is good, and the noise generated when the hand valve works can be reduced.

Preferably, in this embodiment, the driving lever 4 is fixedly connected with the movable block 3 through the hexagonal nut 15, so that the connection relationship between the driving lever 4 and the movable block 3 is stable, and detachment is not easy to occur.

Preferably, in this embodiment, the valve cover 2 is provided with a receiving groove 25, the movable block 3 is movably disposed in the receiving groove 25, and the valve cover 2 is further provided with a through hole 16 through which the rotating shaft 7 passes. The movable block 3 can rotate around the center of the rotating shaft 7 to drive the jackscrew 6 to move up and down.

Specifically, a shaft sleeve is further arranged between the jackscrew 6 and the movable block 3, friction of the jackscrew 6 can be reduced by the shaft sleeve, abrasion is reduced, and service life of the jackscrew 6 is prolonged.

Preferably, in this embodiment, the rotating shaft 7 is provided with a split ring 17 for defining the axial position of the rotating shaft 7.

Preferably, in this embodiment, the pressing post 8 is provided with an annular protrusion 30 that abuts against an elastic component, one end of the elastic component abuts against the annular protrusion 30, and the other end of the elastic component abuts against the membrane 12.

Preferably, in this embodiment, a spacer 18 is further disposed between the valve cover 2 and the diaphragm 12, and the elastic component is disposed in the spacer 18, where the spacer 18 can reduce noise generated when the hand operated valve works. The diaphragm 12 is also forced relatively uniformly by the spacer 18.

Preferably, in this embodiment, the elastic assembly includes a large spring 19 and a small spring 20, and the large spring 19 is sleeved outside the small spring 20.

Preferably, in this embodiment, a dust-proof cover 21 is further sleeved between the valve body 1 and the shift lever 4, and a small hole 22 for the shift lever 4 to pass through is provided at the top of the dust-proof cover 21. Specifically, the valve cover 2 is provided with a mounting groove 23, the dust cover 21 is provided with a clamping part 24 matched with the mounting groove 23 in a clamping manner, the dust cover 21 can play a role in protecting, and impurities such as dust are prevented from entering the valve body 1 through the deflector rod 4.

Preferably, in this embodiment, the mounting groove 23 is an annular groove.

Specifically, a first sealing ring 26 is arranged between the base 10 and the valve body 1 in a sealing manner, a second sealing ring 27 is arranged between the diaphragm 12 and the valve rod 11 in a sealing manner, and a third sealing ring 28 and a fourth sealing ring 29 are abutted between the spacer 18 and the valve body 1 to play a sealing role to prevent leakage.

The foregoing description is only of the preferred embodiments of the utility model, and all changes and modifications that come within the meaning and range of equivalency of the structures, features and principles of the utility model are therefore intended to be embraced therein.

Claims

1. The utility model provides a hand valve, includes valve body (1), and valve body (1) are provided with air inlet and gas outlet, and the upper end fixedly connected with valve gap (2) of valve body (1), activity are provided with movable block (3) and driving lever (4) on valve gap (2), the lower extreme and the movable block (3) of driving lever (4) pass through screw thread fixed connection, and the upper end of driving lever (4) stretches out in the outside and fixedly connected with handle (5) of valve gap (2), its characterized in that: the movable block (3) is internally provided with jackscrews (6) and rotating shafts (7), the jackscrews (6) are symmetrically arranged on two sides of the movable block (3), pressing columns (8) corresponding to the jackscrews (6) one by one are arranged inside the valve cover (2), the pressing columns (8) are in sliding connection with the valve cover (2), two valve cavities (9) are arranged in the valve body (1), bases (10) and valve rods (11) are arranged in the valve cavities (9), a membrane (12) is arranged at the upper end of the bases (10), an elastic component is propped between the membrane (12) and the pressing columns (8), a pagoda spring (13) is arranged in the bases (10), damping springs (14) are propped between the lower ends of the valve rods (11) and the valve body (1), the upper ends of the valve rods (11) extend into the bases (10) to be connected with the membrane (12), and when the handles (5) are pulled, the movable block (3) rotates around the centers of the rotating shafts (7) to drive the jackscrews (6) to drive the pressing columns (8) to move up and down, so that the flow directions of fluid of the membrane (12) and the valve rods (11) are changed.

2. A hand operated valve as set forth in claim 1 wherein: the deflector rod (4) is fixedly connected with the movable block (3) through a hexagonal nut (15).

3. A hand operated valve as set forth in claim 1 wherein: the valve cover (2) is provided with a containing groove (25), the movable block (3) is movably arranged in the containing groove (25), and the valve cover (2) is also provided with a through hole (16) for the rotating shaft (7) to pass through.

4. A hand operated valve as set forth in claim 1 wherein: an opening check ring (17) is arranged on the rotating shaft (7).

5. A hand operated valve as set forth in claim 1 wherein: annular protrusions (30) which are in abutting fit with the elastic components are arranged on the pressing columns (8).

6. A hand operated valve as set forth in claim 1 wherein: a spacer bush (18) is further arranged between the valve cover (2) and the membrane (12), and the elastic component is arranged in the spacer bush (18).

7. A hand operated valve as claimed in claim 1 or 6, wherein: the elastic assembly comprises a large spring (19) and a small spring (20), and the large spring (19) is sleeved outside the small spring (20).

8. A hand operated valve as set forth in claim 1 wherein: a dustproof cover (21) is also sleeved between the valve body (1) and the deflector rod (4), and a small hole (22) for the deflector rod (4) to penetrate out is formed in the top of the dustproof cover (21).

9. A hand operated valve as set forth in claim 8 wherein: the valve cover (2) is provided with a mounting groove (23), and the dust cover (21) is provided with a clamping part (24) which is matched with the mounting groove (23) in a clamping way.

10. A hand operated valve as set forth in claim 9 wherein: the mounting groove (23) is an annular groove.