CN216407107U

CN216407107U - Profile sealing compressor air valve

Info

Publication number: CN216407107U
Application number: CN202123266124.9U
Authority: CN
Inventors: 常海城
Original assignee: Wuxi Kangzi Compressor Fittings And Systems Co ltd
Current assignee: Wuxi Kangzi Compressor Fittings And Systems Co ltd
Priority date: 2021-12-23
Filing date: 2021-12-23
Publication date: 2022-04-29
Anticipated expiration: 2031-12-23

Abstract

The utility model discloses a profile sealing compressor air valve, and relates to the field of design, processing and manufacturing of reciprocating high-speed compressor air valves. The technical scheme is characterized by comprising a valve seat, a valve cover and a sealing valve ring arranged between the valve seat and the valve cover, wherein a spring acting on the sealing valve ring is arranged in the valve cover; the spring is embedded in the spring inner sleeve, one end of the spring is in contact with the inner end wall of the spring inner sleeve, and the other end of the spring is in contact with the inner end wall of the spring outer sleeve. The utility model can avoid the fatigue damage of the spring due to abrasion, thereby improving the service performance of the air valve, prolonging the service life and improving the sealing effect.

Description

Profile sealing compressor air valve

Technical Field

The utility model relates to the field of design, processing and manufacturing of reciprocating high-speed compressor air valves, in particular to a profile sealing compressor air valve.

Background

The compressor air valve comprises an air inlet valve and an air outlet valve which are arranged in a valve hole on the outer side of a compressor cylinder, the valve hole is respectively connected with an air inlet cavity and an air outlet cavity of the compressor, when a compressor piston reciprocates, air is sucked in through the air inlet valve in an air inlet stroke, when the pressure in the cylinder is close to the pressure of a suction pipeline, a sealing element of the air inlet valve, generally called a valve plate, is pushed towards a valve seat under the action of a spring placed on a valve cover or an opening limiter, and the valve plate theoretically should be closed before the end of the air inlet stroke. In the exhaust stroke, when the gas pressure in the cylinder is compressed to be higher than the pressure of the exhaust pipeline, the exhaust valve opens for exhaust, and when the gas pressure in the cylinder approaches the pressure of the exhaust pipeline after the exhaust is finished, the valve plate of the exhaust valve is pushed towards the valve seat under the action of the closing spring, and the valve plate should be closed before the end of the exhaust stroke theoretically. The closing springs are arranged on the intake valve and the exhaust valve, so that the timing function is realized on the opening and closing of the valve plate on one hand, and the movement buffering function is realized on the other hand. The gas valve is a key component of the reciprocating compressor, and the design and the use performance of the spring directly influence the efficiency and the reliability of the gas valve.

Chinese patent No. CN101275681B discloses an automatic suction and discharge valve including a valve seat, a valve opening limiter, and a sealing member reciprocatingly movable between the valve seat and the valve opening limiter, wherein at least one spring pot is provided in the valve opening limiter, a valve spring is provided in the spring pot, and the valve spring loads the sealing member toward the valve seat.

The valve spring in the above patent is usually a coil spring wound by a spring wire, the top of the coil spring is in direct contact with the sealing element, when the sealing element is a set of valve rings concentric with respect to the center line of the gas valve, because the valve rings are usually not positioned in the circumferential direction, during the movement of the valve rings, the valve rings generate circular movement under the action of gas flow, and then the valve rings and the spring rub against each other, resulting in the abrasion of the spring.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model aims to provide a profile sealing compressor air valve which can avoid fatigue damage of a spring due to abrasion, so that the service performance of the air valve can be improved, and the service life of the air valve can be prolonged.

In order to achieve the purpose, the utility model provides the following technical scheme:

a profile sealing compressor air valve comprises a valve seat, a valve cover and a sealing valve ring arranged between the valve seat and the valve cover, wherein a spring acting on the sealing valve ring is arranged in the valve cover; the spring is embedded in the spring inner sleeve, one end of the spring is in contact with the inner end wall of the spring inner sleeve, and the other end of the spring is in contact with the inner end wall of the spring outer sleeve.

Furthermore, a mounting hole matched with the spring outer sleeve is formed in the valve cover.

Furthermore, a first through hole is formed in the inner end wall of the spring outer sleeve, and a second through hole communicated with the first through hole is formed in the inner end wall of the mounting hole.

Furthermore, the inner end wall of the spring inner sleeve is provided with a third through hole.

Further, the number of the sealing valve rings is multiple, and the sealing valve rings are arranged in the radial direction; the valve cover is internally provided with a guide ring used for positioning the sealing valve ring at the inner side, and the guide ring and the valve cover are integrally formed.

Furthermore, the end part of the guide ring is provided with a sealing step, the valve seat is provided with a sealing sinking groove matched with the sealing step, and the outer side wall of the sealing step is in sealing contact fit with the inner side wall of the sealing sinking groove.

Furthermore, a sealing conical surface is arranged on the valve seat, and a linear seal is arranged between the sealing valve ring and the sealing conical surface.

Furthermore, a sealing arc surface matched with the sealing conical surface is arranged on the sealing valve ring, and the sealing arc surface is composed of a section of combined arc surface formed by at least two inscribed circles.

Furthermore, the sealing arc surface is composed of a section of combined arc surface formed by two inscribed circles, and the contact position of the sealing arc surface and the sealing conical surface is the inscribed point of the two inscribed circles.

Furthermore, in the two inscribed circles, the radius of the excircle is 10-15mm, and the radius of the inner circle inscribed with the excircle is 2-5 mm.

In conclusion, the utility model has the following beneficial effects:

1. the spring is covered in the spring inner sleeve and the spring outer sleeve, and the spring inner sleeve can slide relative to the spring outer sleeve, so that the spring can be protected, the fatigue damage of the spring due to abrasion is avoided, the service performance of the air valve can be improved, and the service life of the air valve is prolonged;

2. the combined arc surface of the sealing valve ring is matched with the sealing conical surface, so that linear sealing can be formed, and the sealing effect is improved; and the combination circular arc surface has better adaptability to the sealing conical surface, because the movement of the sealing valve ring relative to the valve seat is not completely concentric, so that the sealing compensation can be carried out through the tangential circular arc surface.

Drawings

FIG. 1 is a schematic view of an embodiment of a profile seal compressor valve;

FIG. 2 is a schematic structural diagram of the under-spring protection case, the coil spring and the over-spring protection case in the embodiment;

fig. 3 is a schematic structural diagram of a sealing valve ring in the embodiment.

In the figure: 1. a valve seat; 2. a center bolt; 3. a sealing valve ring; 4. a valve cover; 5. a spring housing; 6. a spring; 7. a spring inner sleeve; 8. and locking the nut.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.

Example (b):

a profile sealing compressor air valve, refer to fig. 1 and 2, which comprises a valve seat 1, a valve cover 4 and a sealing valve ring 3 arranged between the valve seat 1 and the valve cover 4, wherein a spring 6 acting on the sealing valve ring 3 is arranged in the valve cover 4; a central bolt 2 penetrating through the valve cover 4 is arranged in the middle of the valve seat 1, and a locking nut 8 in contact with the outer end face of the valve cover 4 is screwed on the central bolt 2; the spring protection sleeve comprises a spring outer sleeve 5 and a spring inner sleeve 7 which is movably embedded in the spring outer sleeve 5; the spring 6 is embedded in the spring inner sleeve 7, one end of the spring 6 is contacted with the inner end wall of the spring inner sleeve 7, and the other end of the spring 6 is contacted with the inner end wall of the spring outer sleeve 5; utilize spring endotheca 7 and spring overcoat 5 in this embodiment with spring 6 cover wherein, and spring endotheca 7 can slide for spring overcoat 5 to can play the guard action to spring 6, avoid spring 6 because of wearing and tearing fatigue damage, thereby can improve the performance of pneumatic valve, and increase of service life.

Referring to fig. 1 and 2, specifically, in the present embodiment, a mounting hole matched with the outer spring sleeve 5 is formed in the valve cover 4, and the outer end surface of the inner spring sleeve 7 contacts with the sealing valve ring 3; preferably, in this embodiment, the inner end wall of the spring housing 5 is provided with a first through hole, and the inner end wall of the mounting hole is provided with a second through hole communicated with the first through hole; air in the spring protection sleeve is exhausted through the first through hole and the second through hole, so that positive pressure is prevented from being formed in the spring protection sleeve, and smooth movement of the spring protection sleeve 7 and the sealing valve ring 3 can be guaranteed; preferably, in this embodiment, the inner end wall of the spring inner sleeve 7 is provided with a third through hole.

Referring to fig. 1 and 2, specifically, the number of the sealing valve rings 3 in the present embodiment is three, and the three sealing valve rings 3 are arranged in the radial direction, that is, the three sealing valve rings 3 are arranged concentrically; a guide ring for positioning the sealing valve ring 3 on the inner side is arranged in the valve cover 4, and the guide ring and the valve cover 4 are integrally formed; the inner side of the sealing valve ring 3 in the embodiment is the sealing valve ring 3 with the smallest radius, and the inner side wall of the sealing valve ring 3 is in contact with the outer side wall of the guide ring, so that the positioning function can be realized; preferably, the tip of guide ring is provided with sealed step in this embodiment, the sealed heavy groove of end face center seted up with sealed step complex, and the lateral wall of sealed step is the sealed contact cooperation with the inside wall of sealed heavy groove to can improve sealed effect, prevent that high-pressure gas from leaking along the axial through the centre bore of valve gap.

Referring to fig. 1 and 3, in the present embodiment, a sealing conical surface is disposed on the valve seat 1, and a linear seal is formed between the sealing valve ring 3 and the sealing conical surface, so that the sealing effect can be improved; preferably, in this embodiment, the sealing valve ring 3 is provided with a sealing arc surface matched with the sealing conical surface, and the sealing arc surface is composed of a section of combined arc surface formed by at least two inscribed circles; the combination arc surface and the sealed conical surface cooperation can form the line and seal to improve sealed effect, need not carry out the later stage to sealed valve ring 3 moreover and grind, can reduction in production cost, improve production efficiency. In the embodiment, the sealing arc surface is formed by a section of combined arc surface formed by two inscribed circles, namely the sealing arc surface comprises two tangent arc surfaces which are connected at an inscribed point; the inner tangent points of the two arc surfaces are in contact with the sealing conical surface to realize linear sealing, the two tangent arc surfaces have better adaptability to the sealing conical surface, and when the movement of the sealing valve ring 3 relative to the valve seat 1 is not completely concentric, the two tangent arc surfaces can perform sealing compensation, so that the sealing effect can be improved; wherein, the radius of the excircle is 10-15mm, and the radius of the inner circle internally tangent with the excircle is 2-5 mm; specifically, the radius of the outer circle in this embodiment is 10mm, and the radius of the inner circle inscribed in the outer circle is 2 mm; the center of the outer circle and the center of the inner circle can be adjusted according to needs, and are not limited herein.

Claims

1. The utility model provides a profile sealing compressor pneumatic valve, includes disk seat, valve gap and set up in sealed valve ring between disk seat and the valve gap, be provided with in the valve gap and act on the spring of sealed valve ring, its characterized in that: the spring protection sleeve comprises a spring outer sleeve and a spring inner sleeve movably embedded in the spring outer sleeve; the spring is embedded in the spring inner sleeve, one end of the spring is in contact with the inner end wall of the spring inner sleeve, and the other end of the spring is in contact with the inner end wall of the spring outer sleeve.

2. The profile seal compressor valve as defined in claim 1 wherein: and the valve cover is internally provided with a mounting hole matched with the spring outer sleeve.

3. The profile seal compressor valve as defined in claim 2 wherein: the inner end wall of the spring outer sleeve is provided with a first through hole, and the inner end wall of the mounting hole is provided with a second through hole communicated with the first through hole.

4. The profile seal compressor valve as defined in claim 3 wherein: and the inner end wall of the spring inner sleeve is provided with a third through hole.

5. The profile seal compressor valve as defined in claim 1 wherein: the number of the sealing valve rings is multiple, and the sealing valve rings are arranged in the radial direction; the valve cover is internally provided with a guide ring used for positioning the sealing valve ring at the inner side, and the guide ring and the valve cover are integrally formed.

6. The profile seal compressor valve as defined in claim 5 wherein: the end part of the guide ring is provided with a sealing step, the valve seat is provided with a sealing sinking groove matched with the sealing step, and the outer side wall of the sealing step is in sealing contact fit with the inner side wall of the sealing sinking groove.

7. The profile seal compressor valve as defined in claim 1 wherein: the valve seat is provided with a sealing conical surface, and a linear seal is arranged between the sealing valve ring and the sealing conical surface.

8. The profile seal compressor valve as defined in claim 7 wherein: the sealing valve ring is provided with a sealing arc surface matched with the sealing conical surface, and the sealing arc surface is composed of a section of combined arc surface formed by at least two inscribed circles.

9. The profile seal compressor valve as defined in claim 8 wherein: the sealing cambered surface is composed of a section of combined arc surface formed by two inscribed circles, and the contact position of the sealing cambered surface and the sealing conical surface is the inscribed point of the two inscribed circles.

10. The profile seal compressor valve as defined in claim 9 wherein: in the two inscribed circles, the radius of the excircle is 10-15mm, and the radius of the inner circle inscribed with the excircle is 2-5 mm.