CN108644092A - A kind of reciprocating air compressor of hydraulic-driven - Google Patents

A kind of reciprocating air compressor of hydraulic-driven Download PDF

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Publication number
CN108644092A
CN108644092A CN201810479865.9A CN201810479865A CN108644092A CN 108644092 A CN108644092 A CN 108644092A CN 201810479865 A CN201810479865 A CN 201810479865A CN 108644092 A CN108644092 A CN 108644092A
Authority
CN
China
Prior art keywords
hydraulic fluid
fluid ports
spool
cylinder
hydraulic
Prior art date
Application number
CN201810479865.9A
Other languages
Chinese (zh)
Inventor
邵玉刚
Original Assignee
东莞海特帕沃液压科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 东莞海特帕沃液压科技有限公司 filed Critical 东莞海特帕沃液压科技有限公司
Priority to CN201810479865.9A priority Critical patent/CN108644092A/en
Publication of CN108644092A publication Critical patent/CN108644092A/en

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B27/00Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
    • F04B27/005Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders with two cylinders
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B35/00Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/10Adaptations or arrangements of distribution members
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/002Hydraulic systems to change the pump delivery

Abstract

The invention discloses a kind of reciprocating air compressor of hydraulic-driven, including link block, the left and right ends of the link block are separately installed with the first cylinder body and the second cylinder body;It is slidably connected in the link block and piston rod, the left end of the piston rod is located in first cylinder body, right end is located in second cylinder body;The first piston being connected with the piston rod left end is slidably connected in first cylinder body, and the second piston being connected with the right end of the piston rod is slidably connected in second cylinder body;The link block is equipped with the reversal valve for controlling the piston rod bilateral reciprocation;The left end of first cylinder body is equipped with the first check valve and the second check valve for controlling air discharge, and the right end of second cylinder body is equipped with the third check valve for controlling air entrance and the 4th check valve for controlling air discharge;First cylinder body of the air compressor machine and the second cylinder body Integral connection structure are compacter, and the reciprocating motion of piston is without automatically controlled.

Description

A kind of reciprocating air compressor of hydraulic-driven

Technical field

The present invention relates to air compressor machine technical field, specially a kind of reciprocating air compressor of hydraulic-driven.

Background technology

With the large-scale application of heavy mechanical equipment, hydraulic-driven obtains extensively as a kind of critically important type of drive Using hydraulic system and its relevant technologies also reach its maturity.Especially in air compressor machine applied technical field, traditional air compressor machine is It realizes that piston moves back and forth in cylinder body using toggle in turn to compress air, the air compressor machine of this mode exports arteries and veins It rushes big, unstable, and is easy to block under bad working environments, in addition realizes reciprocating motion of the pistons in current hydraulic air compressor Reversal valve, mostly use solenoid directional control valve greatly and displacement sensor match control commutation, all by controlling sensor close to switch, It is unstable, unreliable to commutate, complicated, and it is inconvenient to replace;The control circuit part of reversing arrangement is using circuit board control System, because wiring board is non-standard, and making processing is relatively difficult, and repair is just extremely difficult after damage, while if there is Also be inconvenient to search reason after problem, greatly reduce production efficiency;Existing reversing arrangement, if long-term lasting energization, very It is easily damaged gadget, the requirement being electrified for a long time can be met, also influenced production efficiency to a certain extent.And certain fields There is extremely stringent requirement of explosion proof, it is desirable that simplification system as possible is intervened without extraneous, is such as applied in oil mine, coal filling Air compressor machine (having requirement of explosion proof) in the fields such as note, natural gas compressing station, a kind of reciprocating pneumatics of hydraulic-driven of desirability Machine can voluntarily commutate come the intervention for meeting without personnel's short distance but also meet the needs of explosion-proof.

Invention content

(1) technical problems to be solved

It is an object of the invention to overcome the defect in the prior art, provide it is a kind of it is simple in structure, easy to process, without electricity The reciprocating air compressor of the hydraulic-driven of control.

(2) technical solution

To achieve the above object, described the present invention provides a kind of reciprocating air compressor of hydraulic-driven, including link block The left and right ends of link block are separately installed with the first cylinder body and the second cylinder body;It is slidably connected in the link block and piston rod, institute The left end for stating piston rod is located in first cylinder body, and right end is located in second cylinder body;Sliding connects in first cylinder body It is connected to the first piston being connected with the piston rod left end, the right end with the piston rod is slidably connected in second cylinder body Connected second piston;The link block is equipped with the reversal valve for controlling the piston rod bilateral reciprocation;Described The left end of one cylinder body is equipped with the first check valve for controlling air entrance and the second check valve for controlling air discharge, The right end of second cylinder body is equipped with the third check valve for controlling air entrance and for controlling air discharge the 4th Check valve;It is compacter by the first cylinder body and the second cylinder body Integral connection structure of the above-mentioned setting air compressor machine, and first The reciprocating motion of piston and second piston is without automatically controlled.The reversal valve includes being internally provided with P hydraulic fluid ports, A hydraulic fluid ports, B hydraulic fluid ports, T oil The valve body of mouth, the left and right ends of the valve body are separately installed with the first screw plug and the second screw plug, are slidably connected in the valve body Spool for control port break-make;Its axial direction of the side upper edge of the spool is equipped with first shoulder, second successively from left to right Shoulder, third shoulder, form the first control chamber between the first shoulder and first screw plug, the third shoulder and described The second control chamber is formed between second screw plug, and the first flow communicated with the first control chamber is equipped in the spool and is controlled with second The second flow channel that chamber processed communicates;When the spool is located at location right, the P hydraulic fluid ports are communicated with the B hydraulic fluid ports, the A hydraulic fluid ports It is communicated with the T hydraulic fluid ports;When the spool is located at left position, the P hydraulic fluid ports are communicated with the A hydraulic fluid ports, the B hydraulic fluid ports and institute T hydraulic fluid ports are stated to communicate;The spool is equipped with the first through flow hole of connection first flow and A hydraulic fluid ports;Second shoulder and third The second through flow hole communicated with second flow channel and third through flow hole are respectively equipped on the side of shoulder;The spool moves left and right The break-make of second through flow hole and the break-make and the third through flow hole and T hydraulic fluid ports of P hydraulic fluid ports can be changed;It is also set in the valve body It is useful for the spring centralising device that control spool is in initial position.

In further technical solution, when the spool is in initial position, second through flow hole and the P hydraulic fluid ports phase Logical, the third through flow hole is communicated with the T hydraulic fluid ports;When the spool is moved downward by initial position, second through flow hole Holding is communicated with the P hydraulic fluid ports, and the third through flow hole gradually separates with T hydraulic fluid ports;The spool is moved right by initial position When, second through flow hole gradually separates with P hydraulic fluid ports, and the third through flow hole holding is communicated with T hydraulic fluid ports.

In further technical solution, the spring centralising device includes the first spring being located in the first control chamber and the One gasket and the second spring in the second control chamber and the second gasket;First gasket is set in the path of spool left end On, first spring one end is against on first gasket, and the other end is against on first screw plug;The second gasket set It is located on the path of spool right end, described second spring one end is against on second gasket, and the other end is against second spiral shell It blocks.

In further technical solution, it is equipped with the first damper in the spool first flow, on first damper Equipped with the first damping hole;The second damper is equipped in the spool second flow channel, second damper is equipped with the second damping Hole.

In further technical solution, the link block is equipped with for being connected to the A hydraulic fluid ports and second cylinder body Second flow channel, and the first flow for being connected to the B hydraulic fluid ports and first cylinder body.

(3) advantageous effect

Compared with prior art, technical scheme of the present invention has the following advantages:The reciprocating air compressor of the hydraulic-driven The first cylinder body and the second cylinder body Integral connection structure it is compacter, and the reciprocating motion of first piston and second piston is not necessarily to It is automatically controlled;In addition the reversal valve makes spool be in initial position, the second through flow hole before P hydraulic fluid port oil inlets by spring centralising device It is communicated with P hydraulic fluid ports, third through flow hole is communicated with T hydraulic fluid ports;When P hydraulic fluid port oil inlets, fluid enters through the second through flow hole, second flow channel The fluid of second control chamber, the first control chamber flows into A hydraulic fluid ports by first flow, and spool is opened under the pressure difference of P hydraulic fluid ports and A hydraulic fluid ports Beginning is moved to the left, and third through flow hole and T mouthfuls of gradually partitions, when valve core movement is to left limit, P hydraulic fluid ports are communicated with A hydraulic fluid ports, B hydraulic fluid ports It is communicated with T hydraulic fluid ports, external hydraulic cylinder starts to move;When external hydraulic cylinder to the end after, fluid no longer flows, P hydraulic fluid ports Pressure differential collapses between A hydraulic fluid ports, spool start to move right under the action of spring centralising device, and in the process of moving right In, third through flow hole is connected to the pressure for making the pressure of the second control chamber be less than the first control chamber with T mouthfuls, and spool continues to be shifted to the right to the right side Limit, at this time the second through flow hole separate with P mouthful, the second control chamber is equal with T hydraulic fluid port pressure, and P hydraulic fluid ports communicate with B hydraulic fluid ports, A hydraulic fluid ports It is communicated with T hydraulic fluid ports, the pressure difference between A hydraulic fluid ports and T hydraulic fluid ports makes spool be maintained at right limit position, and hydraulic cylinder starts to move to reversed It is dynamic;After hydraulic cylinder moves backward to the end, fluid no longer flows the pressure differential collapses between A hydraulic fluid ports and T hydraulic fluid ports, and spool is in spring pair Be moved to the left to initial position under the action of middle device, so far form cycle, be not necessarily to automatically controlled control, and the valve arrangement it is simple, It is easy to process.

Description of the drawings

Fig. 1 is the structural schematic diagram of the reciprocating air compressor of hydraulic-driven in the present embodiment;

Fig. 2 is the structural schematic diagram of reversal valve in the present embodiment;

Fig. 3 is the hydraulic schematic diagram of reversal valve in the present embodiment.

Specific implementation mode

- 3 are please referred to Fig.1, the present invention provides a kind of reciprocating air compressor of hydraulic-driven, including link block 9, the connection The left and right ends of block 9 are separately installed with the first cylinder body 10 and the second cylinder body 11;It is slidably connected in the link block 9 and piston rod 12, the left end of the piston rod 12 is located in first cylinder body 10, and right end is located in second cylinder body 11;First cylinder The first piston 13 being connected with 12 left end of the piston rod is slidably connected in body 10, is slidably connected in second cylinder body 11 The second piston 14 being connected with the right end of the piston rod 12;The link block 9 is equipped with left for controlling the piston rod 12 The reversal valve 15 of right reciprocating motion;The left end of first cylinder body 10 is equipped with enters first cylinder body 10 for controlling air The first check valve 16 in rodless cavity and the second check valve 17 that 10 rodless cavity of the first cylinder body is discharged for controlling air, institute The right end for stating the second cylinder body 11 is equipped with for controlling air into the third check valve 18 and use in 11 rodless cavity of the second cylinder body The 4th check valve 19 in control air discharge 11 rodless cavity of the second cylinder body;Pass through the first cylinder body of the above-mentioned setting air compressor machine 10 and 11 Integral connection structure of the second cylinder body it is compacter, and the reciprocating motion of first piston 13 and second piston 14 without electricity Control.The reversal valve 15 includes the valve body 1 for being internally provided with P hydraulic fluid ports, A hydraulic fluid ports, B hydraulic fluid ports, T hydraulic fluid ports, the left and right ends difference of valve body 1 First screw plug 7a and the second screw plug 7b are installed, is slidably connected in valve body 1 and is useful for the spool 3 of control port break-make;Spool 3 Side upper edge its axial be equipped with first shoulder 3a, the second shoulder 3b, third shoulder 3c, first shoulder 3a and the successively from left to right The first control chamber 1a is formed between one screw plug 7a, and the second control chamber 1b, spool 3 are formed between third shoulder 3c and the second screw plug 7b The interior second flow channel 3.5 for being equipped with and the first control chamber 1a the first flows 3.1 communicated and being communicated with the second control chamber 1b;Spool 3 When positioned at location right, P hydraulic fluid ports are communicated with B hydraulic fluid ports, and A hydraulic fluid ports are communicated with T hydraulic fluid ports;When spool 3 is located at left position, P hydraulic fluid ports and A Hydraulic fluid port communicates, and B hydraulic fluid ports are communicated with the T hydraulic fluid ports;Spool 3 is equipped with the first through flow hole of connection first flow 3.1 and A hydraulic fluid ports 3.2;Be respectively equipped on the side of second shoulder 3b and third shoulder 3c the second through flow hole 3.3 communicated with second flow channel 3.5 and Third through flow hole 3.4;The break-make and third through flow hole 3.4 for moving left and right changeable second through flow hole 3.3 and P hydraulic fluid ports of spool 3 With the break-make of T hydraulic fluid ports;The spring centralising device that initial position is in for controlling spool 3 is additionally provided in valve body 1.

When the spool 3 is in initial position, the second through flow hole 3.3 is communicated with P hydraulic fluid ports, third through flow hole 3.4 and T hydraulic fluid ports It communicates;When spool 3 is moved downward by initial position, the holding of the second through flow hole 3.3 is communicated with P hydraulic fluid ports, third through flow hole 3.4 and T Hydraulic fluid port gradually separates;When spool 3 is moved right by initial position, the second through flow hole 3.3 and P hydraulic fluid ports gradually separate, and third is through-flow Hole 3.4 keeps communicating with T hydraulic fluid ports.

The spring centralising device includes the first spring 6a being located in the first control chamber 1a and the first gasket 2a and is located at The second spring 6b of 1b and the second gasket 2b in second control chamber;First gasket 2a is set on the path of 3 left end of spool, and first The one end spring 6a is against on the first gasket 2a, and the other end is against on the first screw plug 7a;Second gasket 2b is set in 3 right end of spool On path, the one end second spring 6b is against on the second gasket 2b, and the other end is against on the second screw plug 7b.

It is equipped with the first damper 4a, the first damper 4a in 3 first flow 3.1 of the spool and is equipped with the first damping hole 4a1;It is equipped with the second damper 4b, the second damper 4b in 3 second flow channel 3.5 of spool and is equipped with the second damping hole 4b1.

The link block 9 is equipped with the second flow channel for being connected to the A hydraulic fluid ports and 11 rod chamber of the second cylinder body 902, and the first flow 901 for being connected to the B hydraulic fluid ports and 10 rod chamber of the first cylinder body.

P hydraulic fluid ports and T hydraulic fluid ports are connected with hydraulic oil source when use, A hydraulic fluid ports and B hydraulic fluid ports have bar with the second cylinder body 21 respectively The rod chamber of chamber and the first cylinder body 20 is connected to, and before P hydraulic fluid port oil inlets, the reversal valve 15 makes spool 3 by spring centralising device In initial position, the second through flow hole 3.3 is communicated with P hydraulic fluid ports, and third through flow hole 3.4 is communicated with T hydraulic fluid ports;When P hydraulic fluid port oil inlets, Fluid enters the second control chamber 1b through the second through flow hole 3.3, the second damping hole 4b1, and the fluid of the first control chamber 1a passes through first Damping hole 4a1 flows into A hydraulic fluid ports, and spool 3 starts to be moved to the left under the pressure difference of P hydraulic fluid ports and A hydraulic fluid ports, third through flow hole 3.4 with T mouthfuls Gradually partition causes the higher and higher final and P hydraulic fluid port pressure of the pressure of the second control chamber 1b equal, when spool 3 moves to left limit When P hydraulic fluid ports communicated with A hydraulic fluid ports, B hydraulic fluid ports are communicated with T hydraulic fluid ports so that in the rod chamber of the second cylinder body 11 pressure rise so that drive Second piston 14, which is moved right, to be compressed the air in 11 rodless cavity of the second cylinder body and is discharged, while passing through piston rod 12 Drive the first piston 13 being located in first cylinder body 10 to move right so that formed in 10 rodless cavity of the first cylinder body negative pressure into And it draws air into.After second piston 14 moves right to the end, fluid no longer flows, and the pressure difference between P hydraulic fluid ports and A hydraulic fluid ports disappears Lose, spool 3 starts to move right under the action of spring centralising device, and during moving right, third through flow hole 3.4 with The connection of T hydraulic fluid ports makes the pressure that the pressure of the second control chamber 1b is less than the first control chamber 1a, spool 3 continue to be shifted to the right to right limit, this When the second through flow hole 3.3 separate with P hydraulic fluid ports, the second control chamber 1b is equal with T hydraulic fluid port pressure, and P hydraulic fluid ports communicate with B hydraulic fluid ports, A hydraulic fluid ports It is communicated with T hydraulic fluid ports, the pressure difference between A hydraulic fluid ports and T hydraulic fluid ports makes spool 3 be maintained at right limit position so that the first cylinder body 10 has Bar cavity pressure, which rises and then first piston 13 is driven to move downward, is compressed the air in 10 rodless cavity of the first cylinder body simultaneously And be discharged, while driving the second piston 14 being located in second cylinder body 11 to move downward by piston rod 12 so that second Negative pressure is formed in 11 rodless cavity of cylinder body and then is drawn air into.After first piston 13 moves downward to the end, fluid no longer flows A Pressure differential collapses between hydraulic fluid port and T hydraulic fluid ports, spool 3 are moved to the left to initial position under the action of spring centralising device, so far Cycle is formed, the automatic movement back and forth under the control of the present invention of piston rod 12 is not necessarily to automatically controlled control.

Only it is the preferred embodiment of the present invention described in top, it is noted that for the ordinary skill people of the art For member, without departing from the technical principles of the invention, several improvements and modifications can also be made, these improvements and modifications Also it should be regarded as protection scope of the present invention.

Claims (5)

1. a kind of reciprocating air compressor of hydraulic-driven, which is characterized in that including link block, the left and right ends point of the link block First cylinder body and the second cylinder body are not installed;It is slidably connected in the link block and piston rod, the left end of the piston rod is located at In first cylinder body, right end is located in second cylinder body;It is slidably connected in first cylinder body and a piston rod left side Connected first piston is held, the second piston being connected with the right end of the piston rod is slidably connected in second cylinder body;Institute Link block is stated equipped with the reversal valve for controlling the piston rod bilateral reciprocation;The left end of first cylinder body is equipped with The first check valve for controlling air entrance and the second check valve for controlling air discharge, the right end of second cylinder body Third check valve for controlling air entrance and the 4th check valve for controlling air discharge are installed;The reversal valve packet The valve body for being internally provided with P hydraulic fluid ports, A hydraulic fluid ports, B hydraulic fluid ports, T hydraulic fluid ports is included, the left and right ends of the valve body are separately installed with the first screw plug With the second screw plug, it is slidably connected in the valve body and is useful for the spool of control port break-make;Its axis of the side upper edge of the spool To from left to right successively be equipped with first shoulder, the second shoulder, third shoulder, shape between the first shoulder and first screw plug At the first control chamber, the second control chamber is formed between the third shoulder and second screw plug, be equipped in the spool and the The first flow and the second flow channel communicated with the second control chamber that one control chamber communicates;When the spool is located at location right, institute It states P hydraulic fluid ports to communicate with the B hydraulic fluid ports, the A hydraulic fluid ports are communicated with the T hydraulic fluid ports;When the spool is located at left position, the P Hydraulic fluid port is communicated with the A hydraulic fluid ports, and the B hydraulic fluid ports are communicated with the T hydraulic fluid ports;
The spool is equipped with the first through flow hole of connection first flow and A hydraulic fluid ports;The side of second shoulder and third shoulder The second through flow hole communicated with second flow channel and third through flow hole are respectively equipped on face;The spool moves left and right changeable institute State the break-make of the break-make and the third through flow hole and T hydraulic fluid ports of the second through flow hole and P hydraulic fluid ports;
The spring centralising device that initial position is in for controlling spool is additionally provided in the valve body.
2. a kind of reciprocating air compressor of hydraulic-driven according to claim 1, which is characterized in that the spool is in just When beginning position, second through flow hole is communicated with the P hydraulic fluid ports, and the third through flow hole is communicated with the T hydraulic fluid ports;The spool When being moved downward by initial position, the second through flow hole holding is communicated with the P hydraulic fluid ports, the third through flow hole and T hydraulic fluid ports Gradually partition;When the spool is moved right by initial position, second through flow hole gradually separates with P hydraulic fluid ports, the third Through flow hole holding is communicated with T hydraulic fluid ports.
3. a kind of reciprocating air compressor of hydraulic-driven according to claim 2, which is characterized in that the spring centering dress It sets including the first spring and the first gasket and the second spring in the second control chamber and second in the first control chamber Gasket;First gasket is set on the path of spool left end, and first spring one end is against on first gasket, separately One end is against on first screw plug;Second gasket is set on the path of spool right end, and described second spring one end is supported On second gasket, the other end is against on second screw plug.
4. a kind of reciprocating air compressor of hydraulic-driven according to claim 1, which is characterized in that the spool is first-class The first damper is equipped in road, first damper is equipped with the first damping hole;Second is equipped in the spool second flow channel Damper, second damper are equipped with the second damping hole.
5. a kind of reciprocating air compressor of hydraulic-driven according to claim 1, which is characterized in that set on the link block It is useful for being connected to the second flow channel of the A hydraulic fluid ports and second cylinder body, and for being connected to the B hydraulic fluid ports and first cylinder The first flow of body.
CN201810479865.9A 2018-05-18 2018-05-18 A kind of reciprocating air compressor of hydraulic-driven CN108644092A (en)

Priority Applications (1)

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CN201810479865.9A CN108644092A (en) 2018-05-18 2018-05-18 A kind of reciprocating air compressor of hydraulic-driven

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Application Number Priority Date Filing Date Title
CN201810479865.9A CN108644092A (en) 2018-05-18 2018-05-18 A kind of reciprocating air compressor of hydraulic-driven

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110242537A (en) * 2019-06-27 2019-09-17 张谭伟 A kind of feed screw nut's air compressor machine

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Publication number Priority date Publication date Assignee Title
CN201396327Y (en) * 2009-05-07 2010-02-03 刘常芝 Self control positioning two-directional hydraulic reversing valve
CN102287407A (en) * 2011-09-19 2011-12-21 宁波汉商液压有限公司 Double-action reciprocating hydraulic booster
CN203717519U (en) * 2013-12-18 2014-07-16 湖南特力液压有限公司 Supercharging oil cylinder, supercharging system and sealing performance experiment table
CN106523335A (en) * 2016-08-25 2017-03-22 湖南莫尔顿智能勘探机器人有限公司 Automatic reversing water pump
US20170167478A1 (en) * 2015-12-10 2017-06-15 Southwest Research Institute Reciprocating Compressor With Integral Engine and With Linear Cylinders
DE202017004509U1 (en) * 2017-08-26 2017-10-02 Anatolij Bolenko Compress air with a heavy falling piston in a cylinder
CN206943121U (en) * 2017-07-14 2018-01-30 南通理工智能制造技术有限公司 A kind of integral type automatic reciprocating air cylinder device

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201396327Y (en) * 2009-05-07 2010-02-03 刘常芝 Self control positioning two-directional hydraulic reversing valve
CN102287407A (en) * 2011-09-19 2011-12-21 宁波汉商液压有限公司 Double-action reciprocating hydraulic booster
CN203717519U (en) * 2013-12-18 2014-07-16 湖南特力液压有限公司 Supercharging oil cylinder, supercharging system and sealing performance experiment table
US20170167478A1 (en) * 2015-12-10 2017-06-15 Southwest Research Institute Reciprocating Compressor With Integral Engine and With Linear Cylinders
CN106523335A (en) * 2016-08-25 2017-03-22 湖南莫尔顿智能勘探机器人有限公司 Automatic reversing water pump
CN206943121U (en) * 2017-07-14 2018-01-30 南通理工智能制造技术有限公司 A kind of integral type automatic reciprocating air cylinder device
DE202017004509U1 (en) * 2017-08-26 2017-10-02 Anatolij Bolenko Compress air with a heavy falling piston in a cylinder

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110242537A (en) * 2019-06-27 2019-09-17 张谭伟 A kind of feed screw nut's air compressor machine

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Application publication date: 20181012