CN220378438U

CN220378438U - Case cover structure of piston compressor

Info

Publication number: CN220378438U
Application number: CN202321814347.0U
Authority: CN
Inventors: 郭峰; 庞小伟
Original assignee: Guangdong Xinren Technology Co ltd
Current assignee: Guangdong Xinren Technology Co ltd
Priority date: 2023-07-11
Filing date: 2023-07-11
Publication date: 2024-01-23
Anticipated expiration: 2033-07-11

Abstract

The utility model provides a box cover structure of a piston compressor, which is formed by two opposite arrangement, wherein each box cover is provided with a groove, a limiting column and a pressing column which extend downwards are arranged on the top wall of the groove, connectors are mutually extended in the circumferential directions of the two box covers, each connector is provided with an air outlet channel communicated with the groove, and the limiting column is positioned between the air outlet channel and the pressing column; the valve plate is arranged at the opening of each groove, the upper end of the valve plate is provided with a pressing groove corresponding to the position of the limiting column, the valve plate is provided with an air inlet in a penetrating mode, the air inlet is located on one side of the pressing groove, the upper surface of the valve plate is fixedly provided with a valve plate covering the air inlet, and the valve plate is located between the pressing column and the air inlet. According to the utility model, the opening angle of the valve plate is limited by arranging the limiting column, so that the valve plate is abutted against the limiting column by the air flow with unstable pressure, the same-frequency resonance of the valve plate and the air flow with unstable pressure is reduced, the working noise of the compressor is reduced, and the compressor is beneficial to improving the use experience of a user.

Description

Case cover structure of piston compressor

Technical Field

The utility model relates to the technical field of compressors, in particular to a box cover structure of a piston compressor.

Background

The piston compressor mainly comprises a machine body, a crankshaft, a connecting rod, a piston group, a valve, a shaft seal, and the like. The motor drives the crankshaft to rotate after being started, the piston reciprocates through the transmission of the connecting rod, and the working volume formed by the inner wall of the cylinder, the cylinder cover and the top surface of the piston can be periodically changed. When the piston starts to move from the cylinder cover, the working volume in the cylinder is gradually increased, at the moment, the gas pushes the air inlet valve along the air inlet pipe to enter the cylinder, and the air inlet valve is closed until the working volume is maximum; when the piston moves reversely, the working volume in the cylinder is reduced, the gas pressure is increased, when the pressure in the cylinder reaches and is slightly higher than the exhaust pressure, the exhaust valve is opened, the gas is discharged out of the cylinder until the piston moves to the limit position, and the exhaust valve is closed. The above process is repeated when the piston is again moved in the reverse direction. In short, the crankshaft rotates once, the piston reciprocates once, and the processes of air intake, compression and exhaust are sequentially realized in the cylinder, so that one working cycle is completed.

The inventor researches find that the existing compressor has the following technical defects:

when the connecting rod drives the piston to do exhaust motion in the cylinder, the air pressure of the air chamber rises to force the valve plate on the valve plate to be opened, and the valve plate is unfavorable for quick reset due to overlarge opening angle and large viscous resistance, so that the next compressed air work is influenced, and the work energy efficiency is reduced; and because the valve block is not reset, the connecting rod drives the piston to do compressed gas work, gas can be discharged from the exhaust hole, and because the unrestricted valve block is not in a reset state, the pressure of the air flow is in an unstable state and the valve block generates resonance noise, so that the use experience of a user is reduced.

Accordingly, the applicant has made intensive studies and has made an effort to solve the above-mentioned problems in combination with the application of the theories, which is the object of improvement by the applicant.

Disclosure of Invention

In order to solve the above problems, the present utility model provides a cover structure of a piston compressor, which is beneficial to quick resetting and noise reduction of a valve plate.

In order to achieve the above object, the present utility model provides a cover structure of a piston compressor, comprising:

the box covers are arranged in a two-phase manner, grooves are formed in the box covers, limiting columns and pressing columns extending downwards are arranged on the top walls of the grooves, connectors are formed in the circumferential directions of the two box covers in an extending mode, air outlet channels communicated with the grooves are formed in the connectors, and the limiting columns are located between the air outlet channels and the pressing columns;

the valve plates are arranged at the openings of the grooves, pressing grooves corresponding to the positions of the limiting columns are formed in the upper ends of the valve plates, air inlets are formed in the valve plates in a penetrating mode, the air inlets are located on one sides of the pressing grooves, valve plates which cover the air inlets are fixedly arranged on the upper surfaces of the valve plates, and the valve plates are located between the pressing columns and the air inlets.

Optionally, the overall dimension of the limiting column is larger than the radial dimension of the air inlet, and the lower end of the limiting column is provided with an inclined surface inclined towards the direction of the air outlet channel;

the cross section of the limiting column is rectangular/cross-shaped/square/T-shaped/D-shaped.

Optionally, the lower end of the pressing post abuts against the bottom wall of the pressing groove.

Optionally, the fixing point of the valve plate and the valve plate is closer to the pressing post.

Optionally, the valve plate is located in the air chamber and is closer to the air outlet of the cylinder sleeve, and the pressing column leans against the valve plate.

Optionally, a plurality of heat dissipation ribs are distributed on the peripheral wall of each cylinder sleeve at intervals along the axial direction of the peripheral wall, and the plurality of heat dissipation ribs are arranged around the case cover.

Optionally, an ear plate extends outwards from the periphery of each case cover, a through hole is formed in each ear plate, and the through hole is located between two heat dissipation ribs;

the compressor further comprises a fastener, and the fastener penetrates through the through hole to be in threaded connection with the box body of the compressor.

Optionally, the inner wall of the cylinder sleeve is in a stepped hole shape;

the valve plate is in a boss shape, and one end with the larger outer diameter of the valve plate is placed on the step surface of the stepped hole of the cylinder sleeve;

the novel valve plate is characterized by further comprising a sealing ring, wherein a convex ring extends towards the valve plate from the lower end of the valve plate, the outer diameter of the convex ring is adapted to one end with a large inner wall of the cylinder sleeve, and the sealing ring is arranged between the convex ring and the step surface of the valve plate.

Optionally, the three-way pipe is connected to the two connectors and is positioned between the two box covers and used for communicating the two air outlet channels.

Optionally, the inner diameter dimension of the air outlet channel is greater than 4mm.

Compared with the prior art, the utility model has the beneficial effects that:

through setting up spacing post and having restricted the opening angle of valve block, let the air current of unsteady pressure support the valve block on spacing post, reduce the same frequency resonance of valve block and unsteady pressure air current to let this compressor reduce operating noise, do benefit to and promote user's use experience.

For a better understanding and implementation, the present utility model is described in detail below with reference to the drawings.

Drawings

FIG. 1 is a schematic diagram of the overall construction assembly of the present utility model;

FIG. 2 is a schematic view of the utility model in section within its overall structure;

FIG. 3 is an enlarged schematic view of the structure shown at A in FIG. 2;

FIG. 4 is a schematic view of the overall structure of the case cover of the present utility model;

FIG. 5 is a schematic view of the overall structure of the valve plate of the present utility model;

FIG. 6 is a schematic view of the overall structure of the cylinder liner of the present utility model;

FIG. 7 is a schematic view of the interior of the cylinder liner in section of the present utility model;

fig. 8 is a schematic view of another overall structure of the novel middle case cover.

In the figure:

1. a case cover; 1A, grooves; 11. a limit column; 11A, inclined surface; 12. a pressing column; 13. a connector; 13A, an air outlet channel; 14. ear plates; 15. a convex ring;

2. a valve plate; 2A, pressing the groove; 2B, an air inlet;

3. cylinder sleeve; 3A, an air chamber; 3B, an air inlet; 3C, an air outlet; 31. a heat dissipation rib;

4. a connecting rod;

5. a piston;

6. a fastener;

7. a three-way pipe;

8. a case;

9. and (3) sealing rings.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that all directional indications (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship between the components, the movement condition, etc. in a specific posture, and if the specific posture is changed, the directional indication is changed accordingly.

It will also be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or be indirectly connected to the other element through intervening elements.

Furthermore, the description of "first," "second," etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

Referring to fig. 1 to 8, a cover structure of a piston compressor includes:

the box covers 1 are arranged in a two-to-two mode, grooves 1A are formed in each box cover 1, limiting columns 11 and pressing columns 12 which extend downwards are arranged on the top wall of each groove 1A, connectors 13 are formed in the circumferential directions of the two box covers 1 in an extending mode, air outlet channels 13A communicated with the grooves 1A are formed in each connector 13, and the limiting columns 11 are located between the air outlet channels 13A and the pressing columns 12;

the valve plate 2 is arranged at the opening of each groove 1A, the upper end of the valve plate 2 is provided with a pressing groove 2A corresponding to the position of the limiting column 11, the valve plate 2 is provided with an air inlet 2B in a penetrating way, the air inlet 2B is positioned at one side of the pressing groove 2A, the upper surface of the valve plate 2 is fixedly provided with a valve plate (not disclosed in the figure) covering the air inlet 2B, and the valve plate is positioned between the pressing column 12 and the air inlet 2B.

According to the case cover 1 structure of the piston 5 type compressor, when the pressure between the valve plate 2 and the case cover 1 is smaller than the pressure outside the valve plate 2, air flows into the air inlet 2B, so that the valve plate is forced to be opened by air pressure difference, the opening angle of the valve plate is limited by the pressing column 12 above the valve plate, the valve plate cannot be completely opened by taking the fixed point between the valve plate 2 as the axis, and the valve plate is facilitated to reset. And the opening angle of the valve block is limited, the valve block is propped against the limiting column 11 by the air flow with unstable pressure, the same-frequency resonance of the valve block and the air flow with unstable pressure is reduced, so that the working noise of the compressor is reduced, and the use experience of a user is improved.

In more detail, the valve plate can be quickly reset, so that the working energy efficiency of the compressor can be improved, and the phenomenon that the valve plate is not reset in time to cause leakage energy efficiency is avoided.

Further, the external dimension of the limiting column 11 is larger than the radial dimension of the air inlet 2B, and the lower end of the limiting column 11 is provided with an inclined surface 11A inclined towards the direction of the air outlet channel 13A;

the cross section of the limiting post 11 is rectangular/cross-shaped/square/T-shaped/D-shaped.

Specifically, the overall dimension of the limiting post 11 is set to be larger than the radial dimension of the air inlet 2B, so that the valve plate is effectively rigidly limited in the opening direction.

Illustratively, the lower end of the limiting post 11 is provided with an inclined surface 11A inclined towards the direction of the air outlet channel 13A, so that the valve plate is forced to be opened towards the direction of the air outlet channel 13A, and a certain guiding effect is provided for air flow. The valve plate is opened at an acute angle, so that the flow speed of the air flow is increased, the quick exhaust effect of the compressor is improved, the air flow is prevented from stagnating in the groove 1A, the heat generated by increasing the pressure intensity due to untimely air discharge in the groove 1A is reduced, and the service life of the compressor is effectively prolonged.

In specific implementation, the inclination angle of the inclined surface 11A towards the direction of the air outlet channel 13A is 5-15 degrees; the distance between the vertex of the lower end of the limiting column 11 and the upper end face of the valve plate 2 is 0.5mm-2mm, and the thickness of the valve plate is smaller than the distance between the vertex of the lower end of the limiting column 11 and the upper end face of the valve plate 2.

In some embodiments, referring to fig. 8 for example, the cross-sectional shape of the limiting post 11 is cross-shaped, and the contact area between the limiting post 11 and the valve plate is reduced while the valve plate is effectively rigidly restrained in the opening direction, thereby achieving the noise reduction effect.

The cross-sectional shape of the above-mentioned stopper post 11 includes the above-mentioned cross shape but is not limited thereto; the cross section of the limiting post 11 may be rectangular/square/T-shaped/D-shaped, etc., and will not be described in detail herein.

Further, the lower end of the pressing post 12 abuts against the bottom wall of the pressing groove 2A.

In particular, the reliability of the assembly of the valve plate 2 with other components is facilitated.

Further, the fixing point of the valve plate and the valve plate 2 is closer to the pressing post 12.

Specifically, the valve plate is opened at an acute angle by taking the fixed point of the valve plate and the valve plate 2 as an axial point.

Further, the novel valve plate structure further comprises cylinder sleeves 3 which are matched with the number of the box covers 1, air chambers 3A for the connecting rod 4 and the piston 5 to reciprocate along the axial direction of the cylinder sleeves 3 are formed in each cylinder sleeve 3, each cylinder sleeve 3 is provided with an air inlet 3B and an air outlet 3C which are communicated with the air chamber 3A, a box cover 1 is detachably arranged at the position, close to the air outlet 3C, of each cylinder sleeve 3, a valve plate 2 is located in the air chamber 3A and is closer to the air outlet 3C of the cylinder sleeve 3, and a pressing column 12 abuts against the valve plate 2.

Specifically, the connecting rod 4 drives the piston 5 to compress the gas between the piston 5 and the valve plate 2, so that the pressure between the piston 5 and the valve plate is higher than the pressure between the case cover 1 and the valve plate 2, namely, it can be understood that the connecting rod 4 drives the piston 5 to move towards the valve plate 2, and the valve plate is forced to be opened.

In addition, the pressing column 12 is pressed against the valve plate 2, namely when the pressure between the piston 5 and the valve plate 2 is higher than the pressure between the case cover 1 and the valve plate 2, so that the valve plate 2 does not generate displacement, and the scientific and reasonable design of the structure is embodied.

In the specific implementation, an air inlet channel corresponding to the position of the air inlet 2B is penetrated on the piston 5, and a valve plate covering the air inlet channel is fixedly installed on the upper surface of the piston 5, wherein the valve plate is located between the upper surface of the piston 5 and the lower surface of the valve plate 2.

Further, a plurality of heat dissipation ribs 31 are distributed on the peripheral wall of each cylinder sleeve 3 at intervals along the axial direction, and the plurality of heat dissipation ribs 31 are arranged around the case cover 1.

Specifically, the heat inside the cylinder liner 3 may be absorbed by the plurality of heat dissipation ribs 31 distributed at intervals, so as to achieve a heat dissipation effect.

Further, the outer peripheral sides of the case covers 1 are extended with ear plates 14, through holes (not shown) are formed in the ear plates 14, and the through holes are located between the two heat dissipation ribs 31;

the compressor further comprises a fastener 6, and the fastener 6 penetrates through the through hole to be in threaded connection with a box body 8 of the compressor.

In particular embodiments, the fastening element 6 may be a bolt, for example.

Further, the inner wall of the cylinder sleeve 3 is in a stepped hole shape; the valve plate 2 is in a boss shape, and one end of the valve plate 2 with the larger outer diameter is placed on the step surface of the stepped hole of the cylinder sleeve 3; the inner wall of the cylinder sleeve 3 is in a stepped hole shape, so that the valve plate 2 is conveniently placed on the step surface of the stepped hole, and is in threaded connection with the box body 8 through the fastener 6, and the pressing column 12 is abutted against the lower end surface of the groove 1A, so that the valve plate 2 of the air chamber 3A does not generate displacement in the pressure difference.

The sealing ring 9 is further included, a convex ring 15 extends from the lower end of the case cover 1 to the valve plate 2, the outer diameter size of the convex ring 15 is adapted to one end of the cylinder sleeve 3, which is large in inner wall size, and the sealing ring 9 is arranged between the convex ring 15 and the step surface of the valve plate 2.

Specifically, the sealing ring 9 is arranged between the convex ring 15 and the step surface of the valve plate 2, so that the assembly air tightness among the components is improved.

Further, the three-way pipe 7 is connected to the two connectors 13 and is located between the two box covers 1 and used for communicating the two air outlet channels 13A.

Specifically, the two connectors 13 are connected in the through direction of the tee 7.

Further, the inner diameter dimension of the air outlet channel 13A is greater than 4mm.

Specifically, the air flow in the groove 1A can be quickly discharged into the tee 7, so that the exhaust efficiency of the compressor is improved.

The foregoing disclosure is merely illustrative of the preferred embodiments of the present utility model and is not intended to limit the scope of the claims herein, as equivalent changes may be made in the claims herein without departing from the scope of the utility model.

Claims

1. A cover structure of a piston compressor, comprising:

2. The cover structure of a piston compressor according to claim 1, wherein: the overall dimension of the limiting column is larger than the radial dimension of the air inlet, and the lower end of the limiting column is provided with an inclined surface inclined towards the direction of the air outlet channel;

3. The cover structure of a piston compressor according to claim 1, wherein: the lower end of the pressing column is pressed against the bottom wall of the pressing groove.

4. The cover structure of a piston compressor according to claim 1, wherein: the fixed point of the valve plate and the valve plate is closer to the pressing column.

5. The cover structure of a piston compressor according to claim 1, wherein: the cylinder sleeves are respectively provided with an air inlet and an air outlet which are communicated with the air chamber, the parts, close to the air outlets, of the cylinder sleeves are respectively detachably provided with a box cover, the valve plate is positioned in the air chamber and is closer to the air outlets of the cylinder sleeves, and the pressing column leans against the valve plate.

6. The cover structure of a piston compressor according to claim 5, wherein: and a plurality of heat dissipation ribs are distributed on the peripheral wall of each cylinder sleeve at intervals along the axial direction of the cylinder sleeve, and the plurality of heat dissipation ribs are arranged around the box cover.

7. The cover structure of a piston compressor according to claim 6, wherein: the outer peripheral sides of the case covers are respectively extended with an ear plate, through holes are formed in the ear plates, and the through holes are positioned between the two radiating ribs;

8. The cover structure of a piston compressor according to claim 5, wherein: the inner wall of the cylinder sleeve is in a stepped hole shape;

9. The cover structure of a piston compressor according to claim 1, wherein: the three-way pipe is connected to the two connectors and positioned between the two box covers and used for communicating the two air outlet channels.

10. The cover structure of a piston compressor according to claim 1, wherein: the inner diameter size of the air outlet channel is larger than 4mm.