WO2022217970A1

WO2022217970A1 - Screw compressor host having valve seats integrated and integrally arranged

Info

Publication number: WO2022217970A1
Application number: PCT/CN2021/141511
Authority: WO
Inventors: 钟仁志; 袁军; 林晓健
Original assignee: 鑫磊压缩机股份有限公司
Priority date: 2021-04-15
Filing date: 2021-12-27
Publication date: 2022-10-20
Also published as: CN113090523B; CN113090523A

Abstract

A screw compressor host having valve seats integrated and integrally arranged, comprising a housing (8). The housing (8) is provided with valve seats (1). The valve seats (1) are integral to the housing (8). Valve cavities (2) are arranged in the valve seats (1). A valve pipe (11) is arranged in the valve cavity (2). A valve hole pipe is arranged on the wall surface of the valve seat (1). A reinforcing part (7) is arranged between the valve hole pipe and the valve seat (1). The valve seats (1) are integral to the housing (8) for integrating valves on a shell of the host. The overall structure of a machine body is more compact, the occupied space of an air compressor is reduced, the adaptability of the air compressor in the narrow environment is improved, and the production cost is reduced. The reinforcing part (7) uses a reinforcing block structure attached to the outer side of the valve seat (1). The lower end of the reinforcing part (7) extends to the housing. A through hole matching the valve hole pipe is arranged in the reinforcing part (7) to reinforce the valve hole pipe. The valve seat (1) has good anti-vibration capability.

Description

A screw compressor host with an integrated valve seat

technical field

The present application relates to the technical field of air compressors, and in particular, to a screw compressor main engine with an integrated valve seat.

Background technique

An air compressor is a device used to compress gas. The air compressor is similar in construction to the water pump. Most air compressors are reciprocating piston, rotary vane or rotary screw. The shell of the screw air compressor is usually provided with a cavity that matches the screw, the end face of the shell is provided with a flange seal, and the upper end of the shell is connected to the outside world through a pipeline.

In the prior art, the casing of the air compressor is usually connected with an air inlet pipe, an air outlet pipe, etc., and various valves are arranged on the pipes. Since the air compressor driven by the air will generate a large impact force, the pipes on the casing are usually easy. damaged point. The shortcomings of the existing air compressors are: the pipeline between the air compressor and the valve has poor seismic resistance, and it often falls off or is damaged, which affects the overall service life of the air compressor and the valve, and the relationship between the air compressor and the valve. They are connected by pipelines, occupying a large space, which is not conducive to the application and installation of air compressors in small occasions such as car bodies, and affects the commercial value of air compressors.

SUMMARY OF THE INVENTION

In order to overcome the above deficiencies in the prior art, the present invention provides a screw compressor main engine with an integrated valve seat, which integrates a shell and a valve seat, so that the valve of the air compressor can be directly integrated on the shell, thereby The occupied space of the air compressor is reduced, the compactness of the structure is improved, the service life of the valve and the whole air compressor is improved, and the production cost is reduced.

Another object of the present invention is to improve the shock resistance of the valve seat.

A screw compressor main engine with an integrated valve seat is characterized in that it comprises a shell, the shell is provided with a valve seat, the valve seat and the shell are integrally formed, the valve seat is provided with a valve cavity, and the valve cavity is provided with a valve seat. The valve pipe, the valve seat wall is provided with a valve hole pipe, and a reinforcing part is arranged between the valve hole pipe and the valve seat.

The valve seat and the casing are integrally formed, and the valve is integrated into the casing of the main engine. The overall structure of the body is more compact, which reduces the space occupied by the air compressor, improves the adaptability of the air compressor in a narrow environment, and reduces the production cost. The reinforcing part adopts a reinforcing block structure that fits the outside of the valve seat, the lower end of the reinforcing part extends to the shell, and the reinforcing part is provided with a through hole matching the valve hole pipe to realize the reinforcement of the valve hole pipe.

Preferably, several valve seats are provided on one side of the housing, and connecting portions are provided between the valve seats. Several valve seats are arranged corresponding to the screws, and the connection parts between the valve seats strengthen the integrity between the valve seats and improve the overall structural strength of the casing.

Preferably, a reinforcing rib is provided between the valve seat and the housing. Improve the connection strength between the valve seat and the housing.

Preferably, the bottom surface of the valve cavity is arranged in cooperation with the casing. The setting of the valve will not interfere with the internal structure of the casing, ensure the strength of the casing, and ensure the reliable rotation of the screw inside the air compressor.

Preferably, the valve seat is provided with a first valve hole tube whose outer end coincides with the outer end face of the casing, and a number of flange holes are arranged on the outer end face of the casing. After the end cover or flange connection is installed on the outer end face of the shell, it can cooperate with the pipe or other parts against the outer end of the first valve hole pipe to realize the support and positioning of the valve assembly in the valve seat, so that the valve seat and the casing are jointly stressed. Improve seat reliability.

Preferably, the valve tube and the valve seat are coaxially arranged, the shell is provided with a step surface formed relative to the outer end, and the wall surface of the valve tube intersects the end face of the step surface. The contact area between the valve tube and the shell is large, the reliability and integrity of the two are high, and the stability of the valve tube is improved.

Preferably, the outer periphery of the valve seat is provided with a shock-absorbing elastic member, and the casing is provided with two valve seats. The elastic plate is provided with a rolling groove matching the ball, the upper end of the valve seat is provided with a limit ring matching the elastic plate, and a return spring is arranged between the elastic plate and the housing. When the air compressor is vibrated, the vibration is transmitted to the elastic plate, the elastic plate slides up and down along the axial direction of the valve seat, and the elastic force of the elastic plate itself also produces a small deformation to cope with the vibration, and converts the vibration into kinetic energy for release, which can not only deal with external vibration, but also It can feedback the self-vibration generated by the air compressor when supplying and sucking air, and improve the stability of the air compressor, especially the valve connection of the body; during the installation process, the elastic plate can also be used as a support to facilitate the installation of parts such as pipes and valve cores; The traditional valve is connected with the body through the pipeline, and the vibration received is absorbed by the pipeline, which affects the life and stability of the pipeline, while the valve of the present application is integrated with the body, which has good integrity and is more stable than traditional air compressors when subjected to vibration. The elastic shock-absorbing effect of the elastic plate has the stability that is difficult to achieve in the prior art.

Preferably, the elastic plates on the two valve seats are fixedly connected, a thickening block is provided at the joint of the two elastic plates on the two valve seats, and the return spring is connected to the lower side of the thickening block. The elastic plates on the two valve seats work together to enhance the integrity of the two valve seats. The vibration of the two valve seats acts on the elastic plates. Due to the existence of the thickened plate, the feedback of the vibration at the thickened plate is more Obviously, for example, when the valve seat is vibrated, the thickened plate first falls, and the thickened plate compresses the return spring. Because the mass of the opposite section of the two elastic plates is small, the feedback lags, and the outer end of the thickened plate and the elastic plate A stretching effect is formed, so that the axis of the elastic plate deviates from the axis of the valve seat, the elastic plate deforms to generate elastic force, and cooperates with the return spring to play a reliable shock absorption effect.

Preferably, the edge of the elastic plate is provided with a sealing lip whose clearance contacts the outer periphery of the valve seat. It plays the role of dust and dust prevention; when the elastic plate is deformed and moved by vibration, the sealing lip will expand the friction effect with the outer wall of the valve, and accelerate the release of vibration energy.

The invention has the following beneficial effects: the valve seat and the valve body are integrally formed, the valve is integrated into the casing of the main engine, the overall structure of the body is more compact, the occupied space of the air compressor is reduced, and the performance of the air compressor in a narrow environment is improved. The adaptability reduces the production cost; the valve and the body are integrated, the integrity is good, and it is more stable than the traditional air compressor when subjected to vibration, and with the elastic shock absorption effect of the elastic plate, it has the stability that is difficult to achieve in the existing technology.

Description of drawings

FIG. 1 is a schematic structural diagram of a first embodiment of the present invention.

FIG. 2 is a left side view of the embodiment shown in FIG. 1 .

FIG. 3 is a schematic structural diagram of a second embodiment of the present invention.

FIG. 4 is a schematic structural diagram of the shock-absorbing elastic member in the embodiment shown in FIG. 3 .

In the figure: Valve seat 1 Valve cavity 2 First valve hole tube 3 Second valve hole tube 4 Step surface 5 Flange hole 6 Reinforcing part 7 Shell 8 Reinforcing rib 9 Connection part 10 Valve tube 11 Damping elastic piece 12 Elastic plate 13 Sealing lip 14 Rolling groove 15 Limit ring 16 Return spring 17 Thickened plate 18.

Detailed ways

The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

Example 1,

A screw compressor main engine with an integrated valve seat, as shown in Figures 1 to 2, includes a casing, a valve seat 1 is provided on the casing 8, the valve seat 1 and the casing 8 are integrally formed, and the valve seat 1 and Reinforcing ribs 9 are arranged between the shells 8 . The valve seat 1 is provided with a valve cavity 2 , and the bottom surface of the valve cavity 2 is arranged in cooperation with the outer surface of the casing 8 . The valve cavity 2 is provided with a valve tube 11 , which is coaxial with the valve seat 1 . The valve seat 1 is provided with a valve hole pipe on the wall, the valve seat 1 is provided with a first valve hole pipe 3 whose outer end coincides with the outer end face of the casing 8, and the outer end face of the casing 8 is provided with a number of flange holes 6 . After the end cap or flange connection is installed on the outer end face of the housing 8, it can cooperate with the pipe or other parts against the outer end of the first valve hole pipe 3 to realize the support and positioning of the valve assembly in the valve seat 1, so that the valve seat 1 and the machine can be supported and positioned. The shells are stressed together to improve the reliability of the valve seat 1 . A reinforcement portion 7 is provided between the valve hole tube and the valve seat 1 . The reinforcing part 7 adopts a reinforcing block structure that fits the outside of the valve seat 1 . The lower end of the reinforcing part 7 extends to the casing 8 , and the reinforcing part 7 is provided with a through hole for matching the valve hole pipe to strengthen the valve hole pipe. Two valve seats 1 are provided on the upper side of the housing 8 , and a connecting portion 10 is provided between the valve seats 1 . The connecting portion 10 is a convex block arranged on the housing 8 , and two valve seats 1 are respectively connected on both sides of the convex block. The opposite positions of the two valve seats 1 are respectively provided with a second valve hole pipe 4 , the first valve hole pipe 3 is connected to the space of the valve cavity 2 outside the valve pipe 11 , and the second valve hole pipe 4 is connected to the inner side of the valve pipe 11 . Space, convenient on-off control of the valve.

The valve seat 1 and the shell 8 are integrally formed, and the valve is integrated into the casing of the main engine. The overall structure of the body is more compact, which reduces the space occupied by the air compressor, improves the adaptability of the air compressor in a narrow environment, and reduces the Cost of production.

Example 2,

A screw compressor main engine with an integrated valve seat, as shown in Figures 3 and 4, the difference between Embodiment 2 and Embodiment 1 is that the outer periphery of the valve seat 1 is provided with a shock-absorbing elastic member 12, and the There are two valve seats 1 on the shell, and the shock-absorbing elastic member 12 includes an elastic plate 13 sleeved on the outer periphery of the valve seat 1. The cross-sectional shape of the elastic plate 13 on a single valve seat 1 is a "C" shape, and the elastic plate 13 The central angle of the inner circumference of the cross section is between 200 degrees and 250 degrees, which ensures the reliability of the elastic plate 13 in the radial direction of the valve seat 1 . The elastic plate 13 is provided with openings for matching the outer end reinforcements 7 of the first valve hole tube 3 and the second valve hole tube 4 . The elastic plate 13 is provided with balls matching the outer peripheral side of the valve seat 1, and the elastic plate 13 is provided with rolling grooves 15 for matching the balls. 15 is annular, and the two ends of the rolling groove 15 correspond to the two ends of the elastic plate 13 to ensure the reliability of the ball sliding. The upper end of the valve seat 1 is provided with a limit ring 16 matching the elastic plate 13 , and a return spring 17 is provided between the elastic plate 13 and the housing 8 . The housing 8 is provided with a horizontal block that matches the return spring 17, and the lower end of the return spring 17 is fixedly connected to the horizontal block. The elastic plates 13 on the two valve seats 1 are fixedly connected, the connection between the two elastic plates 13 on the two valve seats 1 is provided with a thickening block, and the edge of the elastic plates 13 is provided with a sealing lip that contacts the outer periphery of the valve seat 1 with a gap 14. Ensure the rolling ability of the ball, that is, the up and down sliding ability of the elastic plate. The sealing lip 14 is made of wear-resistant high temperature resistant rubber material. The return spring 17 is connected to the underside of the thickened block, and the upper end of the return spring 17 is fixedly connected to the thickened plate 18 . When the air compressor is vibrated, the vibration is transmitted to the elastic plate 13, the elastic plate 13 slides up and down along the axial direction of the valve seat 1, and the elastic force of the elastic plate 13 also produces a small deformation to cope with the vibration, and converts the vibration into kinetic energy to release, not only can cope with External vibration can also feed back the self-vibration generated by the air compressor when supplying air and sucking air, improving the stability of the air compressor, especially the valve connection of the body; during the installation process, the elastic plate 13 can also be used as a support to facilitate the installation of pipes and Valve core and other parts; the traditional valve is connected with the body through the pipeline, and the vibration received is absorbed by the pipeline, which affects the life and stability of the pipeline, while the valve of this application is integrated with the body, and the integrity is better. The machine is more stable, and with the elastic shock absorption effect of the elastic plate 13, it has the stability that is difficult to achieve in the prior art. The elastic plates 13 on the two valve seats 1 work together to enhance the integrity of the two valve seats 1. The vibrations received by the two valve seats 1 act on the elastic plates 13. Due to the existence of the thickened plate 18, the thickened plate The feedback of vibration at 18 is more obvious. For example, when the valve seat 1 is vibrated, the thickened plate 18 first descends, and the thickened plate 18 compresses the return spring 17. Since the mass of the opposite section of the two elastic plates 13 is small, There is a hysteresis in the feedback, the thickening plate 18 and the outer end of the elastic plate 13 form a stretching effect, so that the axis of the elastic plate 13 deviates from the axis of the valve seat 1, the elastic plate 13 deforms to generate elastic force, and cooperates with the return spring 17 to play a reliable shock absorption effect . The sealing lip 14 plays the role of dust and dust prevention; when the elastic plate 13 is deformed and moved by vibration, the sealing lip 14 will expand the friction effect with the outer wall of the valve, and accelerate the release of vibration energy.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which the present invention pertains can make various modifications or additions to the described specific embodiments or substitute in similar manners, but will not deviate from the spirit of the present invention or go beyond the definition of the appended claims range.

Claims

A screw compressor main engine with an integrated valve seat is characterized in that it comprises a shell, the shell is provided with a valve seat, the valve seat and the shell are integrally formed, the valve seat is provided with a valve cavity, and the valve cavity is provided with a valve seat. The valve pipe, the valve seat wall is provided with a valve hole pipe, and a reinforcing part is arranged between the valve hole pipe and the valve seat.
The screw compressor main engine with integrated valve seats according to claim 1, characterized in that, several valve seats are provided on one side of the casing, and connecting parts are provided between the valve seats.
The screw compressor main engine with integrated valve seat according to claim 1 or 2 is characterized in that a reinforcing rib is arranged between the valve seat and the casing.
The screw compressor main engine with integrated valve seat according to claim 1, wherein the bottom surface of the valve cavity is arranged in cooperation with the casing.
The screw compressor main engine with integrated valve seat according to claim 1, wherein the valve seat is provided with a first valve hole pipe whose outer end coincides with the outer end face of the casing, and the outer end face of the casing is provided with a first valve hole pipe. There are several flange holes on it.
The screw compressor main engine with integrated valve seat according to claim 1 or 4, wherein the valve tube and the valve seat are arranged coaxially, and the shell is provided with a step surface formed relative to the outer end, The wall surface of the valve tube intersects the end surface of the step surface.
The screw compressor main engine with integrated valve seat according to claim 1, characterized in that the outer periphery of the valve seat is provided with a shock-absorbing elastic member, and the casing is provided with two valve seats, which can dampen shock absorption. The elastic piece includes an elastic plate sleeved on the outer circumference of the valve seat, the elastic plate is provided with balls matching the outer peripheral side of the valve seat, the elastic plate is provided with rolling grooves matching the balls, and the upper end of the valve seat is provided with a limit ring matching the elastic plate, A return spring is arranged between the elastic plate and the housing.
A screw compressor main engine with integrated valve seats according to claim 7, wherein the elastic plates on the two valve seats are fixedly connected, and the connection between the two elastic plates on the two valve seats A thickening block is provided, and the return spring is connected to the underside of the thickening block.
The screw compressor main engine with integrated valve seat according to claim 7 or 8, wherein the edge of the elastic plate is provided with a sealing lip that contacts the outer periphery of the valve seat with a gap.