CN115479013A

CN115479013A - Dry-type oilless air compressor adopting high-speed direct drive

Info

Publication number: CN115479013A
Application number: CN202211220929.6A
Authority: CN
Inventors: 程红星; 张清源; 程志华; 林军普; 梁志齐
Original assignee: Seize Compressor Shanghai Co ltd
Current assignee: Seize Compressor Shanghai Co ltd
Priority date: 2022-10-08
Filing date: 2022-10-08
Publication date: 2022-12-16
Anticipated expiration: 2042-10-08
Also published as: CN115479013B; WO2024074050A1

Abstract

The invention belongs to the technical field of air compressors and discloses a high-direct-drive dry-type oilless air compressor which comprises a left cylinder body, wherein one end of the left cylinder body is fixedly connected with an intermediate cylinder body, and one end, far away from the left cylinder body, of the intermediate cylinder body is fixedly connected with a right cylinder body. According to the invention, through the arrangement of the piston body, the first partition plate, the second partition plate and the control device, the control device can be used for controlling the opening or closing of the electromagnetic valve on one corresponding side in the process of moving the piston body leftwards and rightwards, so that the piston body can compress air in the motion direction and the air can be supplemented on the reverse side of the piston body in time, the air on the two sides of the piston body can be compressed once each time the piston body moves backwards and forwards, namely the piston body is ensured to be always in a compressed air working state in the process of reciprocating left and right in the piston cylinder through the adjustment of the control device and the matching of the piston body, and the compression efficiency is improved.

Description

Dry-type oilless air compressor adopting high-speed direct drive

Technical Field

The invention belongs to the technical field of air compressors, and particularly relates to a high-speed direct-driven dry-type oilless air compressor.

Background

The dry oil-free air compressor belongs to a miniature reciprocating piston compressor, and has the advantages of simple structure, long service life and easy realization of high-capacity and high-pressure output. The driving modes of the air compressor are generally divided into motor driving and gas turbine driving, wherein the compressor driven by the high-speed direct-drive motor has the characteristics of high efficiency and convenience in operation and is widely applied, the volume of the cylindrical cylinder is periodically changed by the reciprocating motion of a crank rocker of the dry-type oilless air compressor, the air is simply sucked from the outside by the reciprocating motion of a piston in a piston cylinder, and then the sucked air is pushed and extruded into high-pressure air by the piston to work.

The existing dry-type oilless air compressor also has the following defects in the working process: firstly, due to the working principle of the traditional oil-free piston type air compressor, when the piston does reciprocating motion in the cylinder, the piston moves back and forth once in the cylinder, and the piston can only complete one-time suction and compression of air, namely, the piston moves back and forth once and only can do work once, so that the mechanical efficiency is lower; secondly, because in order to guarantee better leakproofness between the inside piston of air compressor machine and the cylinder body, prevent that the air from revealing, lead to the frictional force between piston and the compression cylinder big, cause the damage to piston seal ring and piston body after the repetitious usage easily.

Disclosure of Invention

The invention aims to provide a dry oil-free air compressor adopting high-speed direct drive to solve the problems in the background technology.

In order to achieve the above purpose, the invention provides the following technical scheme: the utility model provides an adopt high-speed dry-type oilless air compressor who directly drives, includes left cylinder body, cylinder body in the middle of the one end fixedly connected with of left cylinder body, the one end fixedly connected with right cylinder body that left cylinder body was kept away from to middle cylinder body, the middle part fixedly connected with first division board of cylinder body one end in the middle of left cylinder body orientation, the upper and lower both sides at first division board middle part all are provided with first check valve, first high pressure air cavity has been seted up to the inside of left cylinder body, the middle part fixedly connected with second division board of cylinder body one end in the middle of right cylinder body orientation, the upper and lower both sides at second division board middle part all are provided with the second check valve, second high pressure air cavity has been seted up to the inside of right cylinder body, piston body has been cup jointed in the inside activity in piston cavity, the both ends of piston body side all are provided with seal ring, and the cavity has been seted up to the inside of piston body, the cavity is provided with two sets of upper and lower two sets of first solenoid valves towards one side of first division board, one side of cavity orientation second partition board is provided with two sets of upper and lower two sets of second solenoid valves, be provided with the annular air inlet channel that runs through the piston body, the piston rod that the other end of piston body runs through the annular air cavity and the piston rod control piston rod of piston rod is linked together the piston rod the piston body the piston rod is seted up the annular inlet channel of the annular inlet of the piston rod.

Preferably, the control device comprises an annular sleeve fixedly connected with the middle part of the inner wall of the two sides of the annular groove, and the annular sleeve is two groups of annular sleeves, wherein a reset spring is fixedly mounted in the annular sleeve, annular sleeve plates are respectively sleeved with the two ends of one end of the reset spring in a movable mode, a plurality of groups of support springs are arranged on the outer side of each annular sleeve plate in a uniform circumferential mode, one end of each support spring is far away from a base, balls are sleeved on the base in a movable mode, one end of each support spring is far away from the base, the other end of each middle fixedly connected with is provided with a guide rod, the other end of each support spring is sleeved with the guide rod in a movable mode, the guide rods are two groups of contact switches, and a group of ejector rods matched with the contact switches are fixedly connected with the two sides of each annular sleeve plate.

Preferably, lubricating oil is filled in the annular groove, and through holes with two ends respectively communicated with the inside of the base and the inside of the annular groove are formed in the guide rod.

Preferably, the first check valve is a pressure type check valve with a one-way flow direction from the interior of the piston cavity to the interior of the first high-pressure air cavity, and the second check valve is a pressure type check valve with a one-way flow direction from the interior of the piston cavity to the interior of the second high-pressure air cavity.

Preferably, the supporting spring is in a compressed state, the first electromagnetic valve is electrically connected with the contact switch close to one side of the left cylinder body, and the second electromagnetic valve is electrically connected with the contact switch close to one side of the right cylinder body.

Preferably, the through hole is filled with sponge.

The invention has the following beneficial effects:

1. according to the invention, through the arrangement of the piston body, the first partition plate, the second partition plate and the control device, the ball and the annular sleeve plate can relatively move leftwards in the process that the piston body moves rightwards, so that the ejector rod on the left side touches the contact switch, the first electromagnetic valve electrically connected with the left contact switch is opened, and the second electromagnetic valve is in a closed state, so that air between the second partition plate and the piston cavity can be compressed rightwards, external air can enter between the first partition plate and the piston cavity along the air inlet, the air inlet channel and the cavity, and air is supplemented between the first partition plate and the piston cavity. Similarly, at the in-process that the piston body moved to the left, can close first solenoid valve through controlling means, open the second solenoid valve, accomplish to supplementary air between right side second division board and the piston chamber when first division board and the inside air compression of piston chamber, realize that the piston body is once going, the anti-motion, can be once to each compression of air, through controlling means's regulation and the cooperation of piston body promptly, guarantee the piston body at the inside in-process of reciprocating motion about of piston cylinder, be in the compressed air state of doing work all the time, improve compression efficiency.

2. According to the invention, through the lubricating oil, the ball and the through hole, the lubricating oil can be slowly transferred to the surface of the ball from the through hole in an infiltration mode, so that the lubricating oil is coated on the inner wall of the piston cavity, the friction between the sealing washer and the cylinder body can be effectively reduced, and the using effect of the sealing washer is ensured.

Drawings

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

FIG. 2 is a schematic view of the internal structure of the intermediate cylinder body according to the present invention;

FIG. 3 is a schematic view of the present invention;

FIG. 4 is an enlarged view of the structure at A in FIG. 3;

FIG. 5 is a schematic cross-sectional view taken along line B-B of FIG. 3;

fig. 6 is an enlarged view of the structure at C in fig. 5.

In the figure: 1. a left cylinder body; 2. an intermediate cylinder; 3. a right cylinder body; 4. a first partition plate; 5. a first check valve; 6. a first high pressure air chamber; 7. a second partition plate; 8. a second check valve; 9. a second high-pressure air cavity; 10. a piston cavity; 11. a piston body; 12. a cavity; 13. a first solenoid valve; 14. a second solenoid valve; 15. a connecting channel; 16. a piston rod; 17. an air intake passage; 18. an air inlet; 19. an annular groove; 20. a control device; 201. an annular sleeve; 202. a return spring; 203. an annular race plate; 204. a support spring; 205. a base; 206. a ball bearing; 207. a guide bar; 208. a contact switch; 209. a top rod; 21. lubricating oil; 22 through holes.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 3, an embodiment of the present invention provides a high-speed direct-drive dry oil-free air compressor, which comprises a left cylinder body 1, wherein one end of the left cylinder body 1 is fixedly connected with an intermediate cylinder body 2, one end of the intermediate cylinder body 2 away from the left cylinder body 1 is fixedly connected with a right cylinder body 3, the middle part of one end of the left cylinder body 1 facing the intermediate cylinder body 2 is fixedly connected with a first partition plate 4, the upper and lower sides of the middle part of the first partition plate 4 are both provided with a first check valve 5, the inside of the left cylinder body 1 is provided with a first high-pressure air chamber 6, the middle part of one end of the right cylinder body 3 facing the intermediate cylinder body 2 is fixedly connected with a second partition plate 7, the upper and lower sides of the middle part of the second partition plate 7 are both provided with a second check valve 8, the inside of the right cylinder body 3 is provided with a second high-pressure air chamber 9, the inside of the intermediate cylinder body 2 is provided with a piston chamber 10, and the inside of the piston chamber 10 is movably sleeved with a piston body 11, both ends of piston body 11 side all are provided with seal ring, and cavity 12 has been seted up to piston body 11's inside, cavity 12 is provided with upper and lower two sets of first solenoid valve 13 towards one side of first division board 4, cavity 12 is provided with upper and lower two sets of second solenoid valve 14 towards one side of second division board 7, be provided with between first high-pressure air cavity 6 and the second high-pressure air cavity 9 and run through left cylinder body 1 in proper order, middle cylinder body 2, the connecting channel 15 of right cylinder body 3, the one end threaded connection of piston body 11 has the piston rod 16 that the middle part runs through second division board 7 and right cylinder body 3, inlet channel 17 that is linked together with cavity 12 has been seted up to the inside of piston rod 16, air inlet 18 has been seted up to inlet channel 17's the other end, annular groove 19 has been seted up to the middle part of piston body 11 side, the inside of annular groove 19 is provided with controlling means 20.

As shown in fig. 4 to 5, the control device 20 includes annular sleeves 201 fixedly connected to the middle portions of the inner walls of the two sides of the annular groove 19, return springs 202 are fixedly mounted inside the two groups of annular sleeves 201, annular sleeve plates 203 movably sleeved with the annular sleeves 201 on the two sides at both ends of one end of each return spring 202, a plurality of groups of support springs 204 arranged in an equal circumference are fixedly connected to the middle portions of the outer sides of the annular sleeve plates 203, one end of each support spring 204 far away from the annular sleeve plate 203 is fixedly connected to a base 205, one end of each base 205 far away from the support springs 204 is movably sleeved with balls 206, the base 205 is provided with a guide rod 207 movably sleeved with the other end of the middle portion of one end of each support spring 204 and the annular sleeve plate 203, a group of contact switches 208 is fixedly mounted inside the two groups of annular sleeves 201, and a group of ejector rods 209 matched with the contact switches 208 are fixedly connected to both sides of the annular sleeve plates 203.

As shown in fig. 4 to 5, the inside of the annular groove 19 is filled with lubricating oil 21, and the inside of the guide rod 207 is opened with a through hole 22 having two ends respectively communicated with the inside of the base 205 and the inside of the annular groove 19.

Wherein, first check valve 5 is the one-way circulation direction from the piston chamber 10 inside to the pressure type check valve of first high-pressure air chamber 6 inside, and second check valve 8 is the one-way circulation direction from the piston chamber 10 inside to the pressure type check valve of second high-pressure air chamber 9 inside, avoids high-pressure air to get into piston chamber 10 inside from first high-pressure air chamber 6, second high-pressure air chamber 9 under self air pressure effect.

Wherein, the supporting spring 204 is in a compressed state, the first electromagnetic valve 13 is electrically connected with the contact switch 208 close to one side of the left cylinder 1, the second electromagnetic valve 14 is electrically connected with the contact switch close to one side of the right cylinder 3, the ball 206 and the annular sleeve plate 203 can be relatively moved leftwards in the process that the piston body 11 moves rightwards, so that the ejector rod 209 at the left side is in contact with the contact switch 208, the first electromagnetic valve 13 electrically connected with the left contact switch 208 is opened, and the second electromagnetic valve 8 is in a closed state, therefore, in the process that the piston body 11 moves rightwards, air between the second partition plate 7 and the piston cavity 10 can be compressed rightwards, the high-pressure air can open the second check valve 8 to enter the second high-pressure air cavity 9, and the first electromagnetic valve 13 can be opened, so that external air can enter between the first partition plate 4 and the piston cavity 10 along the air inlet 18, the air inlet channel 17 and the cavity 12, and air can be supplemented between the first partition plate 4 and the piston cavity 10. Similarly, in the process that the piston body 11 moves leftwards, the first electromagnetic valve 13 can be closed, the second electromagnetic valve 14 can be opened, air compression inside the first partition plate 4 and the piston cavity 10 is completed, and meanwhile air is supplemented between the second partition plate 7 on the right side and the piston cavity 10, so that automatic control is achieved.

Wherein, the through-hole 22 is inside to be filled with the sponge, can make lubricating oil 21 slowly transfer to ball 206 surface from through-hole 22 through the mode of soaking to scribble lubricating oil on piston chamber 10 inner wall, and then can reduce the friction between seal ring and the cylinder body effectively, guarantee seal ring's result of use.

The working principle and the using process are as follows:

during the operation of the air compressor, when the piston rod 16 pushes the piston body 11 to move rightwards, because the ball 206 is under the supporting action of the elastic force of the supporting spring 204 and pressure exists between the ball 206 and the inner wall of the middle cylinder 2, during the process that the piston body 11 moves rightwards, the ball 206 and the annular sleeve plate 203 relatively move leftwards, so that the ejector rod 209 on the left side touches the contact switch 208, the first electromagnetic valve 13 electrically connected with the left contact switch 208 is opened, and the second electromagnetic valve 8 is in a closed state, therefore, during the process that the piston body 11 moves rightwards, air between the second partition plate 7 and the piston cavity 10 can be compressed rightwards, the high-pressure air opens the second check valve 8 and enters the second high-pressure air cavity 9, and the first electromagnetic valve 13 can be opened, so that external air can enter between the first partition plate 4 and the piston cavity 10 along the air inlet 18, the air inlet channel 17 and the cavity 12, and air is supplemented between the first partition plate 4 and the piston cavity 10. Similarly, in the process that the piston body 11 moves leftwards, the first electromagnetic valve 13 can be closed, the second electromagnetic valve 14 can be opened, air is supplemented between the second partition plate 7 on the right side and the piston cavity 10 while the air compression inside the first partition plate 4 and the piston cavity 10 is completed, and the high-pressure air extruded in the reciprocating motion process of the piston body 11 can be converged through the connecting channel 15 after respectively entering the first high-pressure air cavity 6 and the second high-pressure air cavity 9, so that the high-pressure air pipe mounted on the outer surface of the left cylinder body 1 is conveyed into the air storage tank. In the process that the ball 206 moves on the inner wall of the piston cavity 10, the lubricating oil 21 filled in the inner wall of the annular groove 19 can be soaked by the sponge in the through hole 22, and the lubricating oil is smeared on the inner wall of the piston cavity 10 from the surface of the ball 206, so that the friction between the sealing washer and the cylinder body can be effectively reduced, and the using effect of the sealing washer is ensured.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an adopt high-speed dry-type oil-free air compressor who directly drives, includes left cylinder body (1), cylinder body (2) in the middle of the one end fixedly connected with of left cylinder body (1), and the one end fixedly connected with right cylinder body (3) of left cylinder body (1), its characterized in that are kept away from in middle cylinder body (2): the middle part of one end of the middle cylinder body (2) of the left cylinder body (1) is fixedly connected with a first separating plate (4), the upper side and the lower side of the middle part of the first separating plate (4) are respectively provided with a first check valve (5), the inside of the left cylinder body (1) is provided with a first high-pressure air cavity (6), the middle part of one end of the middle cylinder body (2) of the right cylinder body (3) is fixedly connected with a second separating plate (7), the upper side and the lower side of the middle part of the second separating plate (7) are respectively provided with a second check valve (8), the inside of the right cylinder body (3) is provided with a second high-pressure air cavity (9), the inside of the middle cylinder body (2) is provided with a piston cavity (10), the inside of the piston cavity (10) is movably sleeved with a piston body (11), the two ends of the side surface of the piston body (11) are respectively provided with a sealing gasket, the inside of the piston body (11) is provided with a cavity (12), one side of the cavity (12) facing the first separating plate (4) is provided with an upper and lower two groups of first electromagnetic valves (13), one side of the cavity (12) facing the first separating plate (4) is provided with an upper and a lower group of a second high-pressure air cavity (14), the middle channel (6) and a left cylinder body (15) which penetrates through channel (1) and a right high-pressure channel (15) which are sequentially arranged between the middle cylinder body (1), one end of the piston body (11) is in threaded connection with a piston rod (16) with the middle part penetrating through the second partition plate (7) and the right cylinder body (3), an air inlet channel (17) communicated with the cavity (12) is formed in the piston rod (16), an air inlet (18) is formed in the other end of the air inlet channel (17), an annular groove (19) is formed in the middle of the side surface of the piston body (11), and a control device (20) is arranged inside the annular groove (19).

2. The high-speed direct-drive dry oil-free air compressor as claimed in claim 1, wherein: controlling means (20) include with annular groove (19) both sides inner wall middle part fixed connection's annular sleeve (201), two sets of the equal fixed mounting in inside of annular sleeve (201) has reset spring (202), annular lagging (203) that the one end fixedly connected with both ends of reset spring (202) cup jointed with both sides annular sleeve (201) activity respectively, supporting spring (204) that the equal circumference of a plurality of groups of fixedly connected with in the middle part outside annular lagging (203) was arranged, the one end fixedly connected with base (205) of annular lagging (203) are kept away from in supporting spring (204), ball (206) have been cup jointed in the one end activity that supporting spring (204) were kept away from in base (205), guide bar (207) that the middle part fixedly connected with other end of supporting spring (204) one end and annular lagging (203) activity cup jointed are two sets of the equal fixed mounting in inside of annular sleeve (201) has a set of contact switch (208), the equal fixedly connected with ejector pin (209) of a set of contact switch (208) looks adaptation in both sides of annular lagging (203).

3. The high-speed direct-drive dry oil-free air compressor as claimed in claim 2, wherein: lubricating oil (21) is filled in the annular groove (19), and a through hole (22) with two ends respectively communicated with the inside of the base (205) and the inside of the annular groove (19) is formed in the guide rod (207).

4. The high-speed direct-drive dry-type oil-free air compressor as claimed in claim 1, wherein: the first check valve (5) is a pressure type check valve with a one-way flow direction from the interior of the piston cavity (10) to the interior of the first high-pressure air cavity (6), and the second check valve (8) is a pressure type check valve with a one-way flow direction from the interior of the piston cavity (10) to the interior of the second high-pressure air cavity (9).

5. The high-speed direct-drive dry-type oil-free air compressor as claimed in claim 2, wherein: the supporting spring (204) is in a compressed state, the first electromagnetic valve (13) is electrically connected with a contact switch (208) close to one side of the left cylinder body (1), and the second electromagnetic valve (14) is electrically connected with a contact switch close to one side of the right cylinder body (3).

6. The high-speed direct-drive dry-type oil-free air compressor as claimed in claim 3, wherein: the through hole (22) is filled with sponge.