CN214577626U

CN214577626U - Starting pressure reducing valve of air compressor

Info

Publication number: CN214577626U
Application number: CN202120518602.1U
Authority: CN
Inventors: 艾利; 朱佩林; 聂颖
Original assignee: Chongqing Cameo Gasoline Engine Co ltd
Current assignee: Chongqing Camel Power Machinery Co ltd
Priority date: 2021-03-11
Filing date: 2021-03-11
Publication date: 2021-11-02
Anticipated expiration: 2031-03-11

Abstract

The utility model discloses an air compressor starts relief pressure valve, which comprises a valve body, the valve body is equipped with the through-hole, through-hole one end is the air inlet, and the other end is the gas outlet, the inside plunger that is equipped with of through-hole follows the direction of gas outlet to air inlet is equipped with the spacing space of first spacing space and second that is linked together in proper order, the diameter in the spacing space of second is greater than the diameter in first spacing space, the plunger is including the first post and the second post that are connected, the diameter of first post is less than the diameter in first spacing space, the diameter of second post is located between the diameter in first spacing space and the diameter in the spacing space of second. The utility model discloses need not the manual work and can accomplish opening and closing of pressure release automatically, eliminated the risk of gas leakage, and then improved air compressor's work efficiency.

Description

Starting pressure reducing valve of air compressor

Technical Field

The utility model relates to the field of machinary, concretely relates to air compressor starts relief pressure valve.

Background

The air compressor is a device for compressing gas, wherein the pump head of the air compressor is a core component, a piston capable of reciprocating is arranged in the pump head, and further the pressure in a cylinder changes, so that if the pressure in the pump head is too high when the air compressor is started, the resistance of the start is too high, and the pressure of the pump head needs to be relieved when the air compressor is started.

Among the prior art, the mode commonly used is manual pressure release, perhaps sets up the pressure release hole in pump head department, however, to manual pressure release, the operation is not convenient, has the risk of hindering the people by mistake moreover, and the pressure release hole makes the pump head be in the state of gas leakage for a long time, has reduced air compressor's work efficiency.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an it is inconvenient to the pressure release mode operation of pump head among the prior art, has the risk of hindering the people and reduces air compressor work efficiency's problem, provides air compressor start-up relief pressure valve.

In order to realize the purpose of the utility model, the utility model provides a following technical scheme:

air compressor starts relief pressure valve, including the valve body, the valve body is equipped with the through-hole, through-hole one end is the air inlet, and the other end is the gas outlet, the inside plunger that is equipped with of through-hole, follow in the through-hole gas outlet and the spacing space of second that is linked together are equipped with first spacing space and the spacing space of second in proper order to the direction of air inlet, the diameter in the spacing space of second is greater than the diameter in first spacing space, the plunger is including first post and the second post that is connected, the diameter of first post is less than the diameter in first spacing space, the diameter of second post is located between the diameter in first spacing space and the diameter in the spacing space of second. Automatic opening and closing pressure relief is realized.

Furthermore, a sealing element is attached to the surface, close to the first column, of the second column, the length of the sealing element in the radial direction of the plunger is smaller than the diameter of the first limiting space, and the thickness of the sealing element is smaller than the length of the second limiting space in the axial direction. Through setting up sealed the pad, when the second post was laminated with the upper surface in the spacing space of second, improved sealed effect, played the effect that prevents gas leakage.

Further, be equipped with the spacing space of third between the spacing space of first spacing space and the spacing space of second, the diameter in the spacing space of third is located between the diameter in the spacing space of first spacing space and the diameter in the spacing space of second, the cover is equipped with the spring on the first post, the diameter of spring is located between the diameter in the spacing space of first spacing space and the diameter in the spacing space of third. The plunger piston is favorable for resetting after the air compressor is closed through the elasticity of the spring. Further, be equipped with the third post between first post and the second post, the diameter of third post is located between the diameter of first post and the diameter of second post, the diameter of third post is greater than the diameter of spring.

Furthermore, one end of the spring is attached to the upper surface of the third column, and the other end of the spring is attached to the top surface of the second limiting space.

Further, the sealing member is a sealing ring, and the sealing member is sleeved on the third column and attached to the end part of the second column.

Further, the diameter of the air inlet is smaller than that of the second column. The falling off of the plunger can be avoided.

Further, the outer wall of the valve body is provided with threads. The valve body is convenient to mount and dismount, and the axial length of the plunger is smaller than that of the through hole. The use of material and space is reduced. Further, the valve body is arranged at the position where a pump head of the air compressor is communicated with the air outlet cavity.

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

the utility model discloses a cooperation in first post, second post and first spacing space, the spacing space of second, when the air compressor starts, can accomplish the pressure release automatically, reduced air compressor's starting resistance, when the air compressor during operation, utilize the change of the pressure that flows in the valve body, cut off gaseous pressure release passageway through the sealing member, and then realized closing the pressure release automatically, consequently, the utility model discloses need not the people and can accomplish opening and closing of pressure release automatically for controlling, eliminated the risk of gas leakage, and then improved air compressor's work efficiency.

Description of the drawings:

FIG. 1 is a front view of the present invention;

FIG. 2 is a schematic cross-sectional view taken along line A-A of FIG. 1, and is also a schematic view illustrating the pressure relief state of the pressure reducing valve, wherein the direction of the arrow is the air inlet direction;

FIG. 3 is a schematic cross-sectional view taken along line A-A of FIG. 1, illustrating a pressure relief state of the pressure relief valve in a closed state, wherein the direction of the arrow is the direction of air intake;

fig. 4 is a schematic view of the valve body assembly position and the assembly relationship.

The labels in the figure are: 1-valve body, 2-plunger, 3-air outlet, 4-air inlet, 5-sealing element, 6-through hole, 7-thread, 8-spring, 9-air outlet pipeline, 21-first column, 22-second column, 23-third column, 61-first limit space, 62-third limit space and 63-second limit space.

Detailed Description

The present invention will be described in further detail with reference to test examples and specific embodiments. However, it should not be understood that the scope of the above-mentioned subject matter is limited to the following embodiments, and all the technologies realized based on the present invention are within the scope of the present invention.

The present embodiment proposes a pressure reducing valve, as shown in fig. 1 to 3, comprising a valve body 1, a plunger 2, an air outlet 3, an air inlet 4, a sealing member 5, a through hole 6, a thread 7 and a spring 8.

The through hole 6 is arranged in the valve body 1, penetrates through the valve body 1, the through hole 6 is a stepped hole, the part of the through hole 6 coinciding with the upper surface of the valve body 1 is the gas outlet 3, the part of the through hole 6 coinciding with the lower surface of the valve body 1 is the gas inlet 4, the through hole 6 sequentially comprises a second limiting space 63, a third limiting space 62 and a first limiting space 61 which are communicated with each other from the gas inlet 4 to the gas outlet 3, and the diameters of the three are sequentially reduced.

The plunger 2 is arranged in the through hole 6, is in clearance fit with the through hole 6, and can reciprocate in the axial direction of the through hole 6 under the action of gas pressure.

The plunger 2 comprises a second column 22, a third column 23 and a first column 21 which are connected in sequence from the air inlet 4 to the air outlet 3, and the diameters of the three columns are gradually reduced.

The diameter of the second column 22 is between the diameter of the second limit space 63 and the diameter of the third limit space 62, so that the second column 22 is positioned in the second limit space 63, the limit positions of the second column 22 are the upper plane and the lower plane of the second limit space 63, and in order to prevent the plunger 2 from falling off, the diameter of the air inlet 4 is smaller than that of the second column 22, and the plunger 2 can be held in the through hole 6.

Third post 23 cover is equipped with sealing member 5, and sealing member 5 and second post 22 are laminated for when second post 22 moves to extreme position, when the top plane of second spacing space 63 promptly, the top plane of upper and lower two sides and second spacing space 63 of sealing member 5 and the top plane of third post 23 all closely laminate, make gas can't pass through and get into gas outlet 3 in the clearance of plunger 2 and through-hole 6.

The third column 23 is provided between the first column 21 and the second column 22, and has a diameter larger than the diameter of the first stopper space 61 and smaller than the diameter of the third stopper space 62, so that at least a part of the third column 23 can reciprocate in the third stopper space 62 and the second stopper space 63, the upper limit position of the third column 23 being the top surface of the third stopper space 62, and the lower limit position thereof being the bottom surface of the second stopper space 63.

The diameter of the first column 21 is smaller than that of the first limiting space 61, and the length of the plunger 2 is smaller than that of the through hole 6, so that materials and space are saved.

The structure of the plunger 2 and the through hole 6 is not limited to that shown in the drawings, wherein the plunger 2 may include only the first and

second posts

21 and 22 connected to each other, and meanwhile, the through hole 6 includes only the first and

second spacing spaces

61 and 63 communicating with each other, the sealing member 5 is fitted over the first post 21, and the length of the sealing member 5 in the radial direction of the plunger 2 is greater than the diameter of the first spacing space 61. In this embodiment, the sealing member is an O-ring.

21 the cover is equipped with spring 8 on first post, spring 8's diameter is less than the diameter of third post 23, is greater than the diameter of first spacing space 61, make spring 8 can keep inside third spacing space 62, the length under the spring 8 natural state equals with the distance between the top surface of third post 23 and the top surface of third spacing space 62, make in the valve body 1 when not getting into gas, spring 8's one end and the laminating of the top surface of third spacing space 62, the other end and the laminating of the top surface of third post 23.

Valve body 1 sets up the position of air compressor's pump head and play air cavity intercommunication, specifically is on going out pipeline 9, check valve or off-load control valve, as shown in fig. 4, this embodiment sets up on going out pipeline 9 to through screw 7 and go out pipeline threaded connection, this device embodiment specifically as follows, when air compressor opens the pressure release state:

when the air compressor does not start, spring 8 is in the nature or the micro-compression state, when the air compressor starts, go out the air cavity and rise to P1 gradually with pressure in the gas circuit that is linked together with it, consequently, the bottom plane of second post 22 receives the direction slow motion of flow towards gas under the effect of pressure P1, and then compression spring 8, sealing member 5 has not laminated with the top surface of the spacing space 63 of second this moment, because plunger 2 is clearance fit with through-hole 6, gaseous clearance department of following plunger 2 and through-hole 6 and enclosing, flow to gas outlet 3 from air inlet 4, and then play the effect of starting the pressure release, consequently, reduce starting pressure, be convenient for start the air compressor smoothly.

When the air compressor is in a closed continuous pressure state:

when the air compressor further starts to normal operating condition, the gas pressure of pump head inside risees gradually to P2, and spring 8 compresses completely this moment for sealing member 5 closely laminates with the top surface of the spacing space 63 of second, and under the effect of sealing member 5, gaseous unable gas outlet that gets into has further cut off gaseous pressure release route, and the relief pressure valve is in the closed condition, no longer the pressure release, and after the air compressor stop work, spring 8 resumes to natural state.

Claims

1. The air compressor starts relief pressure valve, its characterized in that: including valve body (1), valve body (1) is equipped with through-hole (6), through-hole (6) one end is air inlet (4), and the other end is gas outlet (3), through-hole (6) inside is equipped with plunger (2), follow in through-hole (6) gas outlet (3) are equipped with the spacing space of first spacing space (61) and the spacing space of second (63) that are linked together in proper order to the direction of air inlet (4), the diameter of the spacing space of second (63) is greater than the diameter of first spacing space (61), plunger (2) are including first post (21) and the second post (22) that are connected, the diameter of first post (21) is less than the diameter of first spacing space (61), the diameter of second post (22) is located between the diameter of the spacing space of first spacing space (61) and the diameter of the spacing space of second (63).

2. The air compressor activation pressure relief valve of claim 1, wherein: the sealing element (5) is attached to the surface, close to the first column (21), of the second column (22), the length of the sealing element (5) in the radial direction of the plunger (2) is smaller than the diameter of the first limiting space (61), and the thickness of the sealing element (5) is smaller than the length of the second limiting space (63) in the axial direction.

3. The air compressor activation pressure relief valve of claim 2, wherein: be equipped with spacing space of third (62) between spacing space of first (61) and the spacing space of second (63), the diameter in spacing space of third (62) is located between the diameter in the spacing space of first (61) and the diameter in the spacing space of second (63), the cover is equipped with spring (8) on first post (21), the diameter of spring (8) is located between the diameter in the spacing space of first (61) and the diameter in the spacing space of third (62).

4. The air compressor start-up pressure relief valve of claim 3, wherein: a third column (23) is arranged between the first column (21) and the second column (22), the diameter of the third column (23) is located between the diameter of the first column (21) and the diameter of the second column (22), and the diameter of the third column (23) is larger than the diameter of the spring (8).

5. The air compressor start-up pressure relief valve of claim 4, wherein: one end of the spring (8) is attached to the upper surface of the third column (23), and the other end of the spring is attached to the top surface of the second limiting space (63).

6. The air compressor activation pressure relief valve of claim 5, wherein: sealing member (5) are the sealing washer, sealing member (5) cover is established on third post (23), and with the tip of second post (22) is laminated mutually.

7. The air compressor activation pressure relief valve of claim 6, wherein: the diameter of the air inlet (4) is smaller than that of the second column (22).

8. The air compressor activation pressure relief valve of claim 1, wherein: the outer wall of the valve body (1) is provided with threads (7).

9. The air compressor activation pressure relief valve of claim 1, wherein: the axial length of the plunger (2) is smaller than that of the through hole (6).

10. The air compressor activation pressure relief valve of claim 1, wherein: the valve body (1) is arranged at the position where a pump head of the air compressor is communicated with the air outlet cavity.