CN210484235U

CN210484235U - Seal assembly structure of balance valve and cylinder cover

Info

Publication number: CN210484235U
Application number: CN201921538622.4U
Authority: CN
Inventors: 李伟
Original assignee: Zhongjie Jieding Industrial Co ltd
Current assignee: Zhongjie Jieding Industrial Co ltd
Priority date: 2019-09-17
Filing date: 2019-09-17
Publication date: 2020-05-08
Anticipated expiration: 2029-09-17

Abstract

The utility model relates to a not only the gas tightness is good, and 1.0 MPa's atmospheric pressure minimum just can realize normally starting moreover, and the effectual balanced valve of buffering and the sealed assembly structure of cylinder head simultaneously, including balanced valve and cylinder cap, projection in the balanced valve and the cooperation of pegging graft of the through-hole in the cylinder cap, open the internal face of through-hole has and is equipped with O type sealing washer in annular groove and the annular groove, O type sealing washer cover is established on the projection. The advantages are that: firstly, the sealing assembly structure layout of the balance valve and the cylinder cover is more reasonable, and the normal starting can be realized by the lowest air pressure of 1.0 MPa; and secondly, the arrangement of a balance valve flat gasket in the seal assembly structure of the balance valve and the cylinder cover can greatly enhance the buffering effect.

Description

Seal assembly structure of balance valve and cylinder cover

Technical Field

The utility model relates to a not only the gas tightness is good, and the atmospheric pressure of minimum 1.0MPa just can realize normally starting moreover, and the balanced valve that the buffering effect is good simultaneously and cylinder head seal assembly structure belong to nail nipping rifle and make the field.

Background

CN 202878250U, title "a pneumatic nail puller", including the casing that has cylinder and inlet channel, it still includes nail puller and connects in the casing outer end and the nail section of thick bamboo subassembly that corresponds with the cylinder, nail puller's one end is located the casing, and the other end is located the nail section of thick bamboo subassembly. The nail nipping mechanism comprises a piston arranged in the cylinder, a balance valve, a pressure spring and a valve sleeve which are corresponding to the piston and are arranged in the shell in sequence, and a nail nipping rod with a nail nipping head at one end, wherein the other end of the nail nipping rod penetrates the valve sleeve, the pressure spring and the balance valve in sequence to be connected with the piston, and an air outlet of the air inlet channel is arranged between the piston and the balance valve. The nail barrel assembly comprises a base, a connecting sleeve and a nail barrel which are sequentially arranged on the nail pulling rod, the connecting sleeve is connected with the base, the nail barrel is connected to the outer wall of the connecting sleeve, the base is connected with the shell through a screw, and the nail pulling head is located in the nail barrel. And an anti-splash sleeve connected with the base through a screw is arranged on the outer edge of the base and faces the nail nipping direction. The disadvantages are that: firstly, the balance valve and cylinder cover sealing assembly structure in the pneumatic nail gun, the ring groove provided with the O-shaped sealing ring is arranged on the balance valve, when the high pressure of the nail gun is within the range of 1.0-1.2MPa (namely the lowest air pressure of 1.0 MPa), the structure can be started to work only by increasing the diameter of the balance valve (increasing the product weight) or increasing the spring force (increasing the low-pressure starting pressure); secondly, two O-shaped sealing rings are arranged on the upper end face of the balance valve in the pneumatic nail gun for buffering, and the buffering effect is poor.

SUMMERY OF THE UTILITY MODEL

The design purpose is as follows: in order to avoid the defects in the background technology, the sealing assembly structure of the balance valve and the cylinder cover is designed, wherein the sealing assembly structure has good air tightness, can realize normal starting by the lowest air pressure of 1.0MPa, and has good buffering effect.

The design scheme is as follows: the design purpose is realized.

1. The internal face of through-hole is opened there is annular groove and is equipped with O type sealing washer in the annular groove, the design on the projection is established to O type sealing washer cover, is one of the technical characteristics of the utility model. The purpose of this design is: firstly, an O-shaped sealing ring groove is arranged in a through hole of the cylinder cover, and the sealing performance of the splicing position of the O-shaped sealing ring and the through hole is realized by arranging the O-shaped sealing ring, so that the diameter of the balance valve is favorably reduced under the same area and air pressure, and the weight and the volume of a gun body are reduced; secondly, the design of the structure is more reasonable, so that the nail pulling gun can be easily started and normally work within the range of 1.0-1.2MPa of high pressure (namely the lowest air pressure of 1.0 MPa).

2. The design that is equipped with balanced valve flat pad in the ring channel is the second technical characteristic of the utility model. The purpose of this design is: set up the flat pad of balanced valve in the ring channel, because the effective buffering area of the flat pad of balanced valve is bigger, the flat pad of balanced valve's setting not only can improve the buffering effect of structure greatly like this, can reduce the noise that the nail rifle that pulls out that is equipped with this structure produced moreover.

3. The design of annular spacing groove and the unsmooth complex of annular flange when the flat pad of balanced valve is installed in the ring channel is the utility model discloses a three technical characteristic. The purpose of this design is: when the balance valve flat gasket is installed in the annular groove, the annular limiting groove is matched with the annular flange in a concave-convex mode, so that the balance valve flat gasket cannot shift in the using process, and even breaks away from the balance valve.

4. The design that the outer disc of balanced valve was equipped with first annular groove is the technical characteristic of the utility model four. The purpose of this design is: the outer circular surface of the balance valve is provided with a first annular groove, the first annular groove is used for accommodating an O-shaped rubber ring, and the sealing performance of an annular cavity between the balance valve and the cylinder cover is guaranteed after the balance valve and cylinder cover sealing assembly structure and the cylinder body are assembled.

5. The outer disc of cylinder head is equipped with the design of second annular groove, is the technical characteristics of the utility model fifth. The purpose of this design is: and a second annular groove is formed in the outer circular surface of the cylinder cover and used for accommodating an O-shaped rubber ring, and the sealing performance of an annular cavity between the balance valve and the cylinder cover is ensured after the balance valve and cylinder cover seal assembly structure and the cylinder body are assembled.

6. The lower terminal surface of cylinder head is equipped with the design that a plurality of rectangles sealed stopper of filling up, is the utility model discloses a technical characteristic is six. The purpose of this design is: the lower end face of the cylinder cover is provided with a plurality of rectangular sealing gasket limiting blocks, and the rectangular sealing gaskets arranged in the gun head groove are limited and fixed by the rectangular sealing gasket limiting blocks after the balance valve and cylinder cover sealing assembly structure and the gun head of the nail-pulling gun are assembled.

The technical scheme is as follows: the utility model provides a balanced valve and cylinder head seal assembly structure, includes balanced valve and cylinder head, projection in the balanced valve and the cooperation of pegging graft of through-hole in the cylinder head, the internal face of through-hole is opened and is equipped with O type sealing washer in annular groove and the annular groove, O type sealing washer cover is established on the projection.

Compared with the background technology, the utility model has the advantages that firstly, the sealing assembly structure layout of the balance valve and the cylinder cover is more reasonable, and the normal start can be realized by the lowest air pressure of 1.0 MPa; and secondly, the arrangement of a balance valve flat gasket in the seal assembly structure of the balance valve and the cylinder cover can greatly enhance the buffering effect.

Drawings

Fig. 1 is a front view structural schematic diagram of a seal assembly structure of a balance valve and a cylinder head.

Fig. 2 is a cross-sectional structural schematic view of a seal assembly structure of the balancing valve and the cylinder head.

Fig. 3 is a schematic perspective view of the balanced valve.

Fig. 4 is a schematic perspective view of the cylinder head.

Detailed Description

Example 1: reference is made to figures 1-4 of the drawings. The utility model provides a balanced valve and cylinder head seal assembly structure, includes balanced valve 1 and cylinder head 2, projection 11 in the balanced valve 1 and the cooperation of pegging graft of through-hole 21 in the cylinder head 2, the internal face of through-hole 21 is opened and is equipped with O type sealing washer 3 in annular groove 22 and the annular groove 22, the symmetry center line of annular groove 22 and the coincidence of the symmetry center line of through-

hole

21, 3 covers of O type sealing washer are established on projection 11. The O-shaped sealing ring 3 is a rubber ring. An annular cavity 5 is formed between the balance valve 1 and the cylinder cover 2 after the balance valve 1 and the cylinder cover 2 are in splicing fit, a pressure spring 6 is arranged between the balance valve 1 and the cylinder cover 2, and the pressure spring 6 is located in the annular cavity 5. The rivet rod through hole 13 in the balance valve 1 penetrates through the upper end face of the balance valve 1 and the lower end face of the convex column 11. The diameter of the through hole 21 is matched with that of the convex column 11.

The upper end face of the balance valve 1 is provided with an annular groove 12, the symmetrical center line of the annular groove 12 coincides with the symmetrical center line of a rivet rod through hole 13 in the balance valve 1, and a balance valve flat gasket 4 is arranged in the annular groove 12. The outer disc of the balance valve flat gasket 4 is provided with an annular flange 41, the annular flange 41 and the balance valve flat gasket 4 are of an integral structure, the balance valve flat gasket 4 is made of rubber, the outer side wall surface of the annular groove 12 is provided with an annular limiting groove 14, and the annular limiting groove 14 is matched with the annular flange 41 in a concave-convex mode when the balance valve flat gasket 4 is installed in the annular groove 12. The balance valve flat gasket 4 can be pulled out of the balance valve 1 by pulling an external force.

The outer circular surface of the balance valve 1 is provided with a first annular groove 15. The outer circumferential surface of the cylinder head 2 is provided with a second annular groove 23. The lower end face of the cylinder cover 2 is provided with a plurality of rectangular sealing gasket limiting blocks 24, and the rectangular sealing gasket limiting blocks 24 are distributed in a circular shape. After the balance valve and cylinder cover seal assembly structure and the gun head of the nail pulling gun are assembled, the rectangular sealing gasket limiting blocks 24 play a role in limiting and fixing the rectangular sealing gasket arranged in the gun head groove, and meanwhile, the rectangular sealing gasket is limited and clamped by the rectangular sealing gasket limiting blocks 24, so that the requirement on the size precision of the rectangular sealing gasket limiting blocks 24 can be reduced.

It is to be understood that: although above-mentioned embodiment is right the utility model discloses a design has done more detailed word description, but these word descriptions, are only right the utility model relates to a simple word description of idea, rather than right the utility model relates to a restriction of idea, any do not surpass the utility model relates to a combination, increase or the modification of idea all fall into the utility model discloses a within the protection scope.

Claims

1. The utility model provides a balanced valve and cylinder head seal assembly structure, includes balanced valve (1) and cylinder head (2), projection (11) in balanced valve (1) and through-hole (21) grafting cooperation in cylinder head (2), characterized by: an annular groove (22) is formed in the inner wall surface of the through hole (21), an O-shaped sealing ring (3) is arranged in the annular groove (22), and the O-shaped sealing ring (3) is sleeved on the convex column (11).

2. The seal-fitting structure of the balance valve and the cylinder head as set forth in claim 1, wherein: the O-shaped sealing ring (3) is a rubber ring.

3. The seal-fitting structure of the balance valve and the cylinder head as set forth in claim 1, wherein: the upper end face of the balance valve (1) is provided with an annular groove (12), the symmetrical center line of the annular groove (12) coincides with the symmetrical center line of a rivet rod through hole (13) in the balance valve (1), and a balance valve flat gasket (4) is arranged in the annular groove (12).

4. The seal-fitting structure of the balance valve and the cylinder head as set forth in claim 3, wherein: the balance valve is characterized in that an annular flange (41) is arranged on the outer circular surface of the balance valve flat gasket (4), the annular flange (41) and the balance valve flat gasket (4) are of an integral structure, an annular limiting groove (14) is formed in the outer side wall surface of the annular groove (12), and the annular limiting groove (14) is matched with the annular flange (41) in a concave-convex mode when the balance valve flat gasket (4) is installed in the annular groove (12).

5. The seal-fitting structure of the balance valve and the cylinder head as set forth in claim 1, wherein: the outer circular surface of the balance valve (1) is provided with a first annular groove (15).

6. The seal-fitting structure of the balance valve and the cylinder head as set forth in claim 1, wherein: and a second annular groove (23) is formed in the outer circular surface of the cylinder cover (2).

7. The seal-fitting structure of the balance valve and the cylinder head as set forth in claim 1, wherein: the lower end face of the cylinder cover (2) is provided with a plurality of rectangular sealing gasket limiting blocks (24) and the rectangular sealing gasket limiting blocks (24) are distributed in a circular shape.