CN113144802A - Compressed air source processing device - Google Patents

Compressed air source processing device Download PDF

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Publication number
CN113144802A
CN113144802A CN202110374868.8A CN202110374868A CN113144802A CN 113144802 A CN113144802 A CN 113144802A CN 202110374868 A CN202110374868 A CN 202110374868A CN 113144802 A CN113144802 A CN 113144802A
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CN
China
Prior art keywords
channel
compressed air
liquid
valve
drying
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
CN202110374868.8A
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Chinese (zh)
Inventor
赵仁华
查单婷
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhejiang Kunbo Precision Technology Co ltd
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Zhejiang Kunbo Precision Technology Co ltd
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Priority to CN202110374868.8A priority Critical patent/CN113144802A/en
Publication of CN113144802A publication Critical patent/CN113144802A/en
Pending legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D50/00Combinations of methods or devices for separating particles from gases or vapours
    • B01D50/20Combinations of devices covered by groups B01D45/00 and B01D46/00
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D45/00Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
    • B01D45/12Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces
    • B01D45/16Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces generated by the winding course of the gas stream, the centrifugal forces being generated solely or partly by mechanical means, e.g. fixed swirl vanes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D46/00Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/0002Casings; Housings; Frame constructions
    • B01D46/0005Mounting of filtering elements within casings, housings or frames
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D46/00Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/24Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
    • B01D46/2403Particle separators, e.g. dust precipitators, using rigid hollow filter bodies characterised by the physical shape or structure of the filtering element
    • B01D46/2411Filter cartridges
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/26Drying gases or vapours
    • 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
    • F04B39/04Measures to avoid lubricant contaminating the pumped fluid
    • 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
    • F04B39/16Filtration; Moisture separation

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)

Abstract

The invention discloses a compressed air source processing device which comprises a purifier, a ventilation main body, an air flow regulating valve and an oil mist generator, wherein the purifier, the air flow regulating valve and the oil mist generator are respectively arranged on the ventilation main body, the purifier comprises a shell, a filter element, a liquid isolating plate and an end cover, the filter element is concentrically arranged in the shell, the top edges of the filter element are mutually connected to form a ring wall, an air inlet is formed in the ring wall, the liquid isolating plate is fixed in the shell and positioned below the filter element, a liquid leakage port is formed in the center of the liquid isolating plate, and a liquid discharge port is formed in the bottom of the shell and is sealed by the end cover. According to the invention, the spiral air flow and the waste liquid are separated by arranging the night partition plate in the shell and positioning the liquid partition plate below the filter element, so that the waste liquid is prevented from being rewound and splashed by the spiral air flow, the contact between the waste liquid and the new inlet air flow is effectively reduced, and the impurity removal effect of the new inlet air flow is ensured.

Description

Compressed air source processing device
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of air sources, in particular to the technical field of a compressed air source processing device.
[ background of the invention ]
After the atmospheric air is compressed in a large proportion by the air compressor station, liquid water and impurities are often generated due to the change of pressure and temperature. Therefore, in order to prevent the liquid water and impurities from rusting the inner wall of the pipeline of the pneumatic element and the air control valve, before the compressed air source enters the pneumatic control system, the compressed air source needs to be subjected to purification and filtration treatment.
[ summary of the invention ]
The invention aims to solve the problems in the prior art, and provides a compressed air source treatment device which can separate spiral airflow from waste liquid, avoid the waste liquid from being rewound and splashed by the spiral airflow, effectively reduce the contact between the waste liquid and new inlet airflow, and ensure the impurity removal effect of the new inlet airflow.
In order to achieve the purpose, the invention provides a compressed air source processing device which comprises a purifier, a ventilation main body, an air flow regulating valve and an oil mist generator, wherein the purifier, the air flow regulating valve and the oil mist generator are respectively arranged on the ventilation main body, the purifier comprises a shell, a filter element, a liquid separation plate and an end cover, the filter element is concentrically arranged in the shell, the top edges of the filter element are mutually connected to form a ring wall, an air inlet is formed in the ring wall, the liquid separation plate is fixed in the shell and positioned below the filter element, a liquid leakage port is formed in the center of the liquid separation plate, and a liquid discharge port is formed in the bottom of the shell and is sealed by the end cover.
Preferably, the filter element is in an inverted cone shape.
Preferably, an air guide cylinder is obliquely arranged at the air inlet, and an outlet of the air guide cylinder faces the filter element.
Preferably, the liquid leakage opening is provided with a liquid outlet cylinder.
Preferably, the liquid separation plate is provided with a plurality of air holes.
As preferred, be equipped with intake duct, ventiduct and valve way in the main part of taking a breath respectively, the intake duct is linked together with the air inlet, airflow regulating valve includes valve rod and rod seat, the rod seat is fixed and is equipped with the inside pedestal through-hole of intercommunication ventiduct and filter core at the entrance and the central authorities of ventiduct, the valve way is linked together with the ventiduct, thereby the valve rod is located the valve way and can reciprocate and seal or open the pedestal through-hole.
Preferably, the valve rod includes the body of rod, stopper, valve head and handle, the upper and lower both ends of the body of rod are connected with stopper and valve head respectively, the top at the stopper is fixed to the handle, the valve way includes upper and lower way, be equipped with the internal thread on the inner wall of upper way, stopper threaded connection just highly is less than the height of upper way in the upper way, be equipped with the lower seal circle on the inner wall of lower way.
Preferably, the air conditioner further comprises a drying element, the drying element comprises a drying bag filled with a drying agent and a sealing cover, a drying channel communicated with the air outlet channel is arranged in the air exchange main body, the drying bag is placed in the drying channel, an inlet of the drying channel is sealed by the sealing cover, and an upper sealing ring is arranged at the joint of the air exchange main body and the sealing cover.
Preferably, a test channel communicated with the air outlet channel is arranged in the ventilation main body, and a moisture detector is inserted in the test channel.
Preferably, the moisture detector is located between the outlet of the air outlet channel and the drying channel.
The invention has the beneficial effects that: according to the invention, the night partition plate is arranged in the shell, and the liquid partition plate is positioned below the filter element, so that the spiral airflow is separated from the waste liquid, the waste liquid is prevented from being rewound and splashed by the spiral airflow, the contact between the waste liquid and the new inlet airflow is effectively reduced, and the impurity removal effect of the new inlet airflow is ensured; the air holes are formed in the liquid separation plate, so that air flow is prevented from being stored at the bottom of the shell; the air guide cylinder is arranged at the air inlet, so that the auxiliary air flow spirally rotates along the filter element; by arranging the drying unit, secondary drying is carried out on the air flow after impurity removal, so that a series of negative effects of moisture on a subsequent pneumatic unit are further avoided; the moisture detector is arranged between the outlet of the air outlet channel and the drying channel, so that the moisture content of the air flow after impurity removal is detected in real time.
The features and advantages of the present invention will be described in detail by embodiments in conjunction with the accompanying drawings.
[ description of the drawings ]
FIG. 1 is a front elevational view of a compressed air source treatment apparatus of the present invention;
FIG. 2 is a front view of a compressed air source treatment apparatus of the present invention with the mist generator removed;
FIG. 3 is a front cross-sectional view of a compressed air source treatment apparatus of the present invention with the mist generator and moisture detector removed;
FIG. 4 is a front cross-sectional view of a purifier of a compressed air supply treatment device of the present invention;
FIG. 5 is a front cross-sectional view of a breather body of a compressed air source treatment device in accordance with the present invention;
FIG. 6 is a front cross-sectional view of an air flow adjustment valve of a compressed air source treatment device of the present invention.
In the figure: 1-purifier, 11-shell, 12-filter element, 13-liquid separation plate, 131-liquid outlet cylinder, 132-air vent, 14-end cover, 15-air guide cylinder, 2-air exchange main body, 21-air inlet channel, 22-air outlet channel, 23-lower channel, 24-upper channel, 25-lower sealing ring, 26-drying channel, 27-upper sealing ring, 28-testing channel, 3-air flow regulating valve, 31-rod body, 32-limiting block, 33-valve head, 34-handle, 35-rod seat, 351-seat body through hole, 4-oil mist generator, 5-drying element, 51-drying bag, 52-sealing cover and 6-moisture detector.
[ detailed description ] embodiments
Referring to fig. 1 to 6, the compressed air source processing device of the present invention includes a purifier 1, a ventilation main body 2, an air flow regulating valve 3, and an oil mist generator 4, wherein the purifier 1, the air flow regulating valve 3, and the oil mist generator 4 are respectively installed on the ventilation main body 2, the purifier 1 includes a housing 11, a filter element 12, a liquid barrier 13, and an end cover 14, the filter element 12 is concentrically installed in the housing 11, top edges of the filter element 12 are connected to each other to form a circular wall, an air inlet is formed on the circular wall, the liquid barrier 13 is fixed in the housing 11 and located below the filter element 12, a liquid leakage port is formed in a center of the liquid barrier 13, and a liquid discharge port is formed at a bottom of the housing 11 and sealed by the end cover 14.
The filter element 12 is in the shape of an inverted cone.
An air guide cylinder 15 is obliquely arranged at the air inlet, and the outlet of the air guide cylinder 15 faces the filter element 12.
A liquid outlet cylinder 131 is arranged at the liquid leakage opening.
The liquid separation plate 13 is provided with a plurality of air holes 132.
Be equipped with intake duct 21, ventiduct 22 and valve way in the main part 2 of taking a breath respectively, intake duct 21 is linked together with the air inlet, airflow regulating valve 3 includes valve rod and rod seat 35, rod seat 35 is fixed and is equipped with the inside pedestal through-hole 351 of intercommunication ventiduct 22 and filter core 12 at the entrance and the central authorities of ventiduct 22, the valve rod is linked together with ventiduct 22, thereby the valve rod is located the valve way and can reciprocate to seal or open pedestal through-hole 351.
The valve rod includes the body of rod 31, stopper 32, valve head 33 and handle 34, the upper and lower both ends of the body of rod 31 are connected with stopper 32 and valve head 33 respectively, handle 34 is fixed on the top of stopper 32, the valve way includes upper track 24 and lower 23, be equipped with the internal thread on the inner wall of upper track 24, stopper 32 threaded connection just highly is less than the height of upper track 24 in upper track 24, be equipped with lower sealing washer 25 on the inner wall of lower 23.
The drying device further comprises a drying element 5, wherein the drying element 5 comprises a drying bag 51 filled with a drying agent and a sealing cover 52, a drying channel 26 communicated with the air outlet channel 22 is arranged in the ventilation main body 2, the drying bag 51 is placed in the drying channel 26, the inlet of the drying channel 26 is sealed by the sealing cover 52, and an upper sealing ring 27 is arranged at the joint of the ventilation main body 2 and the sealing cover 52.
A test channel 28 communicated with the air outlet channel 22 is arranged in the ventilation main body 2, and a moisture detector 6 is inserted in the test channel 28.
The moisture detector 6 is located between the outlet of the outlet channel 22 and the drying channel 26.
The working process of the invention is as follows:
the atmospheric air, after being compressed, enters the ventilating body 2 along the air inlet passage 21, enters the inner cavity of the housing 11 along the air inlet port, and is guided by the air guide tube 15 to spirally move downward around the filter element 12. The water drops and impurities are thrown to the inner wall of the shell 11 under the action of centrifugal force, and finally pass through the liquid separation plate 13 along the liquid leakage opening to enter the bottom of the shell 11. And the gas after impurity removal passes through the filter element 12, enters the gas outlet channel 22 along the seat body through hole 351, is secondarily dried by the drying bag 51, enters the oil mist generator 4, is mixed with the atomized lubricating oil and is discharged.
During the period, the handle 34 can be held and rotated to make the limiting block 32 move up and down on the upper channel 24 by the thread, so that the valve head 33 is close to or far away from the rod seat 35, the opening and closing size of the through hole 351 of the seat body is controlled, and the air flow outlet size is controlled.
After a period of operation, the end cap 14 may be opened to allow waste liquid located within the housing 11 to escape. In addition, the cover 52 may be opened and the drying bag 51 may be replaced with a new one.
According to the invention, the night partition plate is arranged in the shell, and the liquid partition plate is positioned below the filter element, so that the spiral airflow is separated from the waste liquid, the waste liquid is prevented from being rewound and splashed by the spiral airflow, the contact between the waste liquid and the new inlet airflow is effectively reduced, and the impurity removal effect of the new inlet airflow is ensured; the air holes are formed in the liquid separation plate, so that air flow is prevented from being stored at the bottom of the shell; the air guide cylinder is arranged at the air inlet, so that the auxiliary air flow spirally rotates along the filter element; by arranging the drying unit, secondary drying is carried out on the air flow after impurity removal, so that a series of negative effects of moisture on a subsequent pneumatic unit are further avoided; the moisture detector is arranged between the outlet of the air outlet channel and the drying channel, so that the moisture content of the air flow after impurity removal is detected in real time.
The above embodiments are illustrative of the present invention, and are not intended to limit the present invention, and any simple modifications of the present invention are within the scope of the present invention.

Claims (10)

1. A compressed air source treatment device, characterized in that: including clarifier (1), main part (2) of taking a breath, air current regulating valve (3) and oil mist generator (4), install respectively on main part (2) of taking a breath clarifier (1), air current regulating valve (3) and oil mist generator (4), clarifier (1) is including casing (11), filter core (12), liquid barrier (13) and end cover (14), install with one heart filter core (12) in casing (11) and top edge interconnect and form the rampart, be equipped with the air inlet on the rampart, liquid barrier (13) are fixed in casing (11) and are located under filter core (12), the central authorities of liquid barrier (13) are equipped with the weeping mouth, the bottom of casing (11) is equipped with the leakage fluid dram and is sealed by end cover (14).
2. A compressed air supply treatment unit as claimed in claim 1 wherein: the filter element (12) is in an inverted cone shape.
3. A compressed air supply treatment unit as claimed in claim 2 wherein: an air guide cylinder (15) is obliquely arranged at the air inlet, and the outlet of the air guide cylinder (15) faces the filter element (12).
4. A compressed air supply treatment unit as claimed in claim 1 wherein: and a liquid outlet cylinder (131) is arranged at the liquid leakage opening.
5. A compressed air supply treatment unit as claimed in claim 4 wherein: the liquid separation plate (13) is provided with a plurality of air holes (132).
6. A compressed air supply treatment unit as claimed in claim 1 wherein: be equipped with intake duct (21), ventiduct (22) and valve way in the main part of taking a breath (2) respectively, intake duct (21) are linked together with the air inlet, air flow control valve (3) are including valve rod and rod seat (35), rod seat (35) are fixed and are equipped with intercommunication ventiduct (22) and the inside pedestal through-hole (351) of filter core (12) at the entrance and the central authorities of ventiduct (22), the valve way is linked together with ventiduct (22), thereby the valve rod is located the valve way and can reciprocate to seal or open pedestal through-hole (351).
7. A compressed air supply treatment unit as claimed in claim 6 wherein: the valve rod comprises a rod body (31), a limiting block (32), a valve head (33) and a handle (34), the upper end and the lower end of the rod body (31) are connected with the limiting block (32) and the valve head (33) respectively, the top end of the limiting block (32) is fixed on the handle (34), the valve channel comprises an upper channel (24) and a lower channel (23), inner threads are arranged on the inner wall of the upper channel (24), the limiting block (32) is in threaded connection with the upper channel (24) and is highly smaller than the height of the upper channel (24), and a lower sealing ring (25) is arranged on the inner wall of the lower channel (23).
8. A compressed air supply treatment unit as claimed in claim 6 wherein: the ventilating device is characterized by further comprising a drying element (5), the drying element (5) comprises a drying bag (51) filled with a drying agent and a sealing cover (52), a drying channel (26) communicated with the air outlet channel (22) is arranged in the ventilating main body (2), the drying bag (51) is placed in the drying channel (26), an inlet of the drying channel (26) is sealed by the sealing cover (52), and an upper sealing ring (27) is arranged at the connecting position of the ventilating main body (2) and the sealing cover (52).
9. A compressed air supply treatment unit as claimed in claim 8 wherein: a testing channel (28) communicated with the air outlet channel (22) is arranged in the air exchange main body (2), and a moisture detector (6) is inserted in the testing channel (28).
10. A compressed air supply treatment unit as claimed in claim 9 wherein: the moisture detector (6) is positioned between the outlet of the air outlet channel (22) and the drying channel (26).
CN202110374868.8A 2021-04-08 2021-04-08 Compressed air source processing device Pending CN113144802A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110374868.8A CN113144802A (en) 2021-04-08 2021-04-08 Compressed air source processing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110374868.8A CN113144802A (en) 2021-04-08 2021-04-08 Compressed air source processing device

Publications (1)

Publication Number Publication Date
CN113144802A true CN113144802A (en) 2021-07-23

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CN202110374868.8A Pending CN113144802A (en) 2021-04-08 2021-04-08 Compressed air source processing device

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CN (1) CN113144802A (en)

Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2897398Y (en) * 2006-03-17 2007-05-09 孙光锋 Air-source treater
CN201030280Y (en) * 2007-04-20 2008-03-05 陈红球 Novel compressed air dehydrator
CN201389398Y (en) * 2009-04-06 2010-01-27 竺开明 Compressed air purifying filter
CN101670530A (en) * 2009-09-24 2010-03-17 玉环县坎门机床厂 Adjustable dry cutting swirl pneumatic cooler
CN201610878U (en) * 2010-03-29 2010-10-20 北京岳能科技有限公司 Precision filter of compressed air
CN201701853U (en) * 2010-06-19 2011-01-12 奉化市盛灵气动机电有限公司 Compressed air purifying and conditioning device
CN201701837U (en) * 2010-06-19 2011-01-12 奉化市盛灵气动机电有限公司 Pressure-adjustable purifier for high-flow air source
CN201748131U (en) * 2010-06-19 2011-02-16 奉化市盛灵气动机电有限公司 Continuous oil mist generator
CN201747704U (en) * 2010-06-19 2011-02-16 奉化市盛灵气动机电有限公司 Combination type compressed air regulating device
CN202909596U (en) * 2012-11-13 2013-05-01 昆山盛鸿大业数控有限公司 Air drying device
CN204201211U (en) * 2014-11-04 2015-03-11 浙江百灵气动科技有限公司 Filtering pressure reducing valve
CN105221759A (en) * 2015-10-23 2016-01-06 苏州金纬化纤工程技术有限公司 For the stop valve of Spinning Equipments
CN205109306U (en) * 2015-11-11 2016-03-30 中山市凌宇机械有限公司 Cyclone type high-efficiency oil-water separator
CN207333735U (en) * 2017-09-15 2018-05-08 抚顺华兴石油化工有限公司 A kind of novel pneumatic regulating valve
CN207697002U (en) * 2018-01-02 2018-08-07 合肥市丽红塑胶材料有限公司 A kind of injection molding machine temperature control device
CN210738811U (en) * 2019-11-08 2020-06-12 湖北安亿压缩机有限公司 Plate-changing dryer of double-screw air compressor

Patent Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2897398Y (en) * 2006-03-17 2007-05-09 孙光锋 Air-source treater
CN201030280Y (en) * 2007-04-20 2008-03-05 陈红球 Novel compressed air dehydrator
CN201389398Y (en) * 2009-04-06 2010-01-27 竺开明 Compressed air purifying filter
CN101670530A (en) * 2009-09-24 2010-03-17 玉环县坎门机床厂 Adjustable dry cutting swirl pneumatic cooler
CN201610878U (en) * 2010-03-29 2010-10-20 北京岳能科技有限公司 Precision filter of compressed air
CN201701853U (en) * 2010-06-19 2011-01-12 奉化市盛灵气动机电有限公司 Compressed air purifying and conditioning device
CN201701837U (en) * 2010-06-19 2011-01-12 奉化市盛灵气动机电有限公司 Pressure-adjustable purifier for high-flow air source
CN201748131U (en) * 2010-06-19 2011-02-16 奉化市盛灵气动机电有限公司 Continuous oil mist generator
CN201747704U (en) * 2010-06-19 2011-02-16 奉化市盛灵气动机电有限公司 Combination type compressed air regulating device
CN202909596U (en) * 2012-11-13 2013-05-01 昆山盛鸿大业数控有限公司 Air drying device
CN204201211U (en) * 2014-11-04 2015-03-11 浙江百灵气动科技有限公司 Filtering pressure reducing valve
CN105221759A (en) * 2015-10-23 2016-01-06 苏州金纬化纤工程技术有限公司 For the stop valve of Spinning Equipments
CN205109306U (en) * 2015-11-11 2016-03-30 中山市凌宇机械有限公司 Cyclone type high-efficiency oil-water separator
CN207333735U (en) * 2017-09-15 2018-05-08 抚顺华兴石油化工有限公司 A kind of novel pneumatic regulating valve
CN207697002U (en) * 2018-01-02 2018-08-07 合肥市丽红塑胶材料有限公司 A kind of injection molding machine temperature control device
CN210738811U (en) * 2019-11-08 2020-06-12 湖北安亿压缩机有限公司 Plate-changing dryer of double-screw air compressor

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Application publication date: 20210723