CN104088793A - Air intake control valve assembly of air compressor - Google Patents
Air intake control valve assembly of air compressor Download PDFInfo
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- CN104088793A CN104088793A CN201410328491.2A CN201410328491A CN104088793A CN 104088793 A CN104088793 A CN 104088793A CN 201410328491 A CN201410328491 A CN 201410328491A CN 104088793 A CN104088793 A CN 104088793A
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Abstract
The invention discloses an air intake control valve assembly of an air compressor. The air intake control valve assembly comprises an air intake valve, a releasing valve and an electromagnetic valve, wherein the air intake valve comprises an air intake valve body, a top cap assembly and a cylinder assembly; the top cap assembly comprises a cap body, a pallet and a combined cap; an air intake adjusting hole is formed in the cap body; the lower end of the air intake adjusting hole is expanded so as to form a containing cavity; a rubber ball, a compressed spring and a spring seat are arranged in the containing cavity from top to bottom; the cylinder assembly comprises a cylinder body, a guide plate, a piston, an ejector rod, a first spring and a second spring; the releasing valve comprises a releasing valve body and a piston assembly; an air inlet hole, a flow diversion hole, an exhaust hole, a control input hole and a control output hole are formed in the releasing body. According to the air intake control valve assembly of the air compressor, the rubber ball and the air intake adjusting hole are matched to adjust the air intake of the top cap assembly, the sealing performance is good; the service life is prolonged; the releasing valve is simple in structure and stable and reliable in operation.
Description
Technical field
The present invention relates to air compressor technical field, especially relate to a kind of air compressor air intake control valve assembly.
Background technique
The inlet valve complement of screw air compressor is made up of suction valve, bleeder valve and solenoid valve etc., thereby is controlled suction valve action and realized the function such as startup, loading, unloading and shutdown of inlet valve complement by solenoid valve.Referring to the disclosed a kind of air compressor of patent announcement CN202326110U be combined into air valve and patent announcement CN202326136U is disclosed a kind of for automatically controlling the air valve that is combined into of air compressor.
There is following problem in existing air compressor air intake control valve assembly, 1, the cap assembly of suction valve inside adopts diaphragm type structure, referring to the cooperating structure of the disclosed air compressor gas valve of patent announcement CN203516013U and top cover, its cap assembly comprise lid, shell fragment, diaphragm and and cap, the edge of lid is provided with the seal ring mating with the suction port of suction valve, lid is provided with the air inlet adjustment hole of vertical perforation, and the be spirally connected lower end of lid of cap, diaphragm and shell fragment from be sheathed on successively under upper lid and and cap between.Under unloading running state, the required oily circulating pressure of system when a small amount of air inlet in air inlet adjustment hole unloads with guarantee air compressor, diaphragm coordinates for adjusting air inflow quantity with air inlet adjustment hole, because diaphragm structure is under the working environment of High Temperature High Pressure oil gas, after repeatedly air inlet is impacted, easily producing distortion can not reset, and can not play the effect of effective adjusting air inflow quantity, need to often safeguard and change diaphragm.2, bleeder valve structure is comparatively complicated, and the valve body of bleeder valve need to be processed many gas channels, be difficult to processing, and processing cost is higher.Therefore be necessary existing air compressor air intake control valve assembly to be improved.
Summary of the invention
The deficiency existing for above-mentioned prior art, the object of this invention is to provide a kind of air compressor air intake control valve assembly, what the cap assembly of its suction valve adopted rubber ball and air inlet adjustment hole coordinates to come adjusting air inflow quantity, better tightness, can adapt to the working environment of air compressor High Temperature High Pressure oil gas, longer service life.Further, also optimize the structure of bleeder valve, made it to be easy to processing, improved the pipeline jointing construction between suction valve, bleeder valve and solenoid valve simultaneously, made the operation of inlet valve complement more reliable and more stable.
To achieve these goals, the technical solution adopted in the present invention is:
A kind of air compressor air intake control valve assembly, comprise suction valve, bleeder valve and solenoid valve, solenoid valve is connected with bleeder valve, bleeder valve is connected with suction valve, suction valve comprises suction valve valve body, cap assembly and cylinder assembly, suction valve valve body is provided with suction port, release input interface and cylinder control interface, suction valve valve inner is provided with suction valve valve pocket, cap assembly and cylinder assembly are located in this suction valve valve pocket, cylinder control interface is for the running of control cylinder assembly, cap assembly coordinates and is used to open or close suction port with suction valve valve body under cylinder assembly drives, described cap assembly comprise lid, supporting plate and and cap, lid is provided with the air inlet adjustment hole being communicated with suction port, supporting plate by and cap be installed on the lower end of lid, the lower end reaming in air inlet adjustment hole forms holding cavity, holding cavity is equiped with successively rubber ball, Compress Spring and spring seat under upper, rubber ball is by the shutoff of air inlet adjustment hole under the resilient force of Compress Spring, and spring seat is folded between lid and supporting plate, and spring seat and supporting plate are provided with the gas-entered passageway with the lower end conducting of described holding cavity, described cylinder assembly comprises cylinder body, guide plate, piston, push rod, the first spring and the second spring, piston is located at cylinder interior, guide plate is located on cylinder body, push rod lower end is fixedly connected with piston, push rod upper end is through in insertion cap after guide plate, the first spring be located at guide plate and and cap between, the second spring is located between piston and guide plate, cylinder control interface is communicated with the cavity being positioned at below piston in cylinder body, bleeder valve comprises bleeder valve valve body and piston assembly, bleeder valve valve body is provided with inlet hole, tap hole, escape orifice, exhaust port, control inputs hole and control delivery outlet, bleeder valve valve inner is provided with " work " shape valve pocket, piston assembly can be located in this " work " shape valve pocket up or down, inlet hole and tap hole are communicated with the upper chamber of " work " shape valve pocket respectively, escape orifice is communicated with the middle part cavity of " work " shape valve pocket, exhaust port, control inputs hole and control delivery outlet are communicated with the lower cavity of " work " shape valve pocket respectively, escape orifice is connected with the input interface of releasing of suction valve by safety check, controlling delivery outlet is connected with the cylinder control interface of suction valve, the input end of solenoid valve is connected with the tap hole of bleeder valve, and the output terminal of solenoid valve is connected with the control inputs hole of bleeder valve.
Wherein, described suction valve valve body is provided with the throttling passage that is communicated with described suction port and described cylinder control interface, and this throttling passage is provided with adjusting bolt.
Adopt after technique scheme, the advantage that compared to the prior art the present invention had is:
When inlet valve complement is during in unloaded state, solenoid valve is opened, the pressurized gas of the upper chamber of bleeder valve valve body enter into the lower cavity of bleeder valve valve body through solenoid valve, promote to move on piston assembly, make inlet hole and escape orifice conducting, pressurized gas enter in suction valve valve pocket from the input interface of releasing of suction valve through safety check, the pressurized gas of the lower cavity of bleeder valve valve body enter in the cylinder body of described cylinder assembly from the cylinder control interface of suction valve simultaneously, promote to move on piston, on piston driving push rod, move, push rod drives on cap assembly and moves and cut out described suction port, compressor head running makes suction valve valve pocket pressure decreased, the elastic force that the rubber ball of cap assembly overcomes Compress Spring under the suction function of suction valve valve pocket moves down, thereby by the air inlet adjustment hole of cap assembly and gas-entered passageway conducting, the air of suction port enters in suction valve valve pocket from air inlet adjustment hole, the required oily circulating pressure of system when a small amount of air inlet in air inlet adjustment hole unloads with guarantee air compressor.When inlet valve complement is during in loaded state, closed electromagnetic valve, the gas circuit of the lower cavity of the upper chamber of bleeder valve valve body and bleeder valve valve body disconnects, promotion piston assembly moves down, make inlet hole and escape orifice blocking-up, the vacuum that compressor head running produces suction valve valve pocket, and then cap assembly moves down described air inlet open.
Cap assembly of the present invention, what adopt rubber ball and air inlet adjustment hole coordinates to come adjusting air inflow quantity, when air compressor is during in unloaded state, negative pressure is formed at the bottom that is positioned at cap assembly in suction valve, make rubber ball depress Compress Spring and move down, thereby air inlet adjustment hole is communicated with holding cavity, play the effect of air inlet compensation, the upper end of holding cavity is the spherical crown surface coordinating with rubber ball, under air inlet is impacted, can not damage rubber ball.In the time that the pressure drop of oil-air pressure tank arrives setup pressure value, motor stopping, air compressor inside no longer forms negative pressure, and now rubber ball resets under the resilient force of Compress Spring, by the shutoff of air inlet adjustment hole.Compared with the top cover that the top cover of rubber ball sealed type of the present invention seals with existing diaphragm type, first its better tightness, under High Temperature High Pressure gas-oil ring border, the more resistance to air inlet of rubber ball is impacted, do not exist diaphragm easily to produce distortion and irreducible problem, can adapt to the working environment under air compressor High Temperature High Pressure oil gas, longer service life.
Bleeder valve of the present invention, its bleeder valve valve body adopts " work " shape valve pocket, bleeder valve valve body two ends are provided with end cap, piston assembly is " work " shape piston mating with " work " shape valve pocket, the top of " work " shape piston is vertically provided with through hole, make upper and lower those two ends of " work " shape piston form pressure reduction, and then when solenoid valve is during by the blocking-up of the upper chamber of " work " shape valve pocket and lower cavity, piston assembly moves down under the pressurized gas effect of bleeder valve inlet hole, and by the upper chamber of bleeder valve and the blocking-up of middle part cavity, by inlet hole and the escape orifice blocking-up of bleeder valve, when solenoid valve is during by the upper chamber of " work " shape valve pocket and lower cavity conducting, under the differential pressure action that piston assembly forms at the upper and lower two ends of " work " shape piston, move up, and the top through hole that passes through " work " shape piston is by the upper chamber of bleeder valve and middle part cavity conducting, by inlet hole and the escape orifice conducting of bleeder valve.Compared with the bleeder valve of existing inlet valve complement, bleeder valve of the present invention is simple in structure, moves more stablely and reliable, and is easy to processing, and cost is lower.
Brief description of the drawings
Below in conjunction with drawings and Examples, the present invention is further described:
Fig. 1 is sectional structure schematic diagram of the present invention.
Fig. 2 is backsight structural representation of the present invention.
Fig. 3 is the structural representation of cap assembly of the present invention.
In figure, 1: suction valve; 2: bleeder valve; 3: solenoid valve; 4: suction valve valve body; 5: cap assembly; 6: cylinder assembly; 7: suction port; 8: the input interface of releasing; 9: cylinder control interface; 10: suction valve valve pocket; 11: lid; 12: supporting plate; 13: and cap; 14: air inlet adjustment hole; 15: holding cavity; 16: rubber ball; 17: Compress Spring; 18: spring seat; 19: gas-entered passageway; 20: cylinder body; 21: guide plate; 22: piston; 23: push rod; 24: the first springs; 25: the second springs; 26: bleeder valve valve body; 27: piston assembly; 28: inlet hole; 29: tap hole; 30: escape orifice; 31: exhaust port; 32: control inputs hole; 33: control delivery outlet; 34: upper chamber; 35: middle part cavity; 36: lower cavity; 37: safety check; 38: throttling passage; 39: adjusting bolt.
Embodiment
The following stated is only preferred embodiment of the present invention, does not therefore limit protection scope of the present invention.
Embodiment, is shown in shown in Fig. 1 to Fig. 3:
A kind of air compressor air intake control valve assembly, comprises suction valve 1, bleeder valve 2 and solenoid valve 3, and solenoid valve 3 is connected with bleeder valve 2, and bleeder valve 2 is connected with suction valve 1.
Suction valve 1 comprises suction valve valve body 4, cap assembly 5 and cylinder assembly 6, suction valve valve body 4 is provided with suction port 7, release input interface 8 and cylinder control interface 9, suction valve valve body 4 inside are provided with suction valve valve pocket 10, cap assembly 5 and cylinder assembly 6 are located in this suction valve valve pocket 10, cylinder control interface 9 operates for control cylinder assembly 6, and cap assembly 5 coordinates and is used to open or close suction port 7 with suction valve valve body 4 under cylinder assembly 6 drives.
Described cap assembly 5 comprises lid 11, supporting plate 12 and also cap 13, lid 11 is provided with the air inlet adjustment hole 14 being communicated with suction port 7, supporting plate 12 by and cap 13 be installed on the lower end of lid 11, the lower end reaming in air inlet adjustment hole 14 forms holding cavity 15, holding cavity 15 is equiped with successively rubber ball 16 under upper, Compress Spring 17 and spring seat 18, rubber ball 16 under the resilient force of Compress Spring 17 by 14 shutoff of air inlet adjustment hole, the upper end of holding cavity 15 is the spherical crown surface coordinating with rubber ball 16, under impacting, air inlet can not damage rubber ball 16, spring seat 18 is folded between lid 11 and supporting plate 12, and cap 13 is bolted in the lower end of lid 11, for spring seat 18 is clamped, spring seat 18 and supporting plate 12 are provided with the gas-entered passageway 19 with described holding cavity 15 lower end conductings.When suction port 7 is in closed condition, and the pressure of lid 11 tops is while being greater than the pressure of lid 11 belows, and the elastic force that rubber ball 16 overcomes Compress Spring 17 moves down, thereby by air inlet adjustment hole 14, holding cavity 15 and gas-entered passageway 19 conductings.
Described cylinder assembly 6 comprises cylinder body 20, guide plate 21, piston 22, push rod 23, the first spring 24 and the second spring 25, piston 22 is located at cylinder body 20 inside, guide plate 21 is located on cylinder body 20, push rod 23 lower ends are fixedly connected with piston 22, push rod 23 upper ends are through described in the rear insertion of guide plate 21 and in cap 13, the first spring 24 be located at guide plate 21 and and cap 13 between, the second spring 25 is located between piston 22 and guide plate 21, and cylinder control interface 9 is communicated with the cavity that is positioned at piston 22 belows in cylinder body 20.Cylinder body 20 is inserted in air valve valve pocket 10 from the lower end of suction valve valve body 4, guide plate 21 is fixedly installed on the casing wall of cylinder body 20, guide plate 21 is provided with vent inner cylinder body 20 and 10 conductings of suction valve valve pocket, to make pressure and 10 pressure balances of suction valve valve pocket in cylinder body 20, guide plate 21 plays leading role to moving up and down of push rod 23, piston 22 under the resilient force of the second spring 25 in the bottom to cylinder body 20, the first spring 24 is for by upwards jack-up coordinate and make suction port 7 in closed condition with suction valve valve body 4 of cap assembly 5, in the upper end insertion of push rod 23 through hole of cap 13, cap assembly 5 can be moved up and down by relative push rod 23.
Bleeder valve 2 comprises bleeder valve valve body 26 and piston assembly 27, bleeder valve valve body 26 is provided with inlet hole 28, tap hole 29, escape orifice 30, exhaust port 31, control inputs hole 32 and control delivery outlet 33, bleeder valve valve body 26 inside are provided with " work " shape valve pocket, piston assembly 27 can be located in this " work " shape valve pocket up or down, inlet hole 28 and tap hole 29 are communicated with the upper chamber 34 of " work " shape valve pocket respectively, escape orifice 30 is communicated with the middle part cavity 35 of " work " shape valve pocket, exhaust port 31, control inputs hole 32 and control delivery outlet 33 are communicated with the lower cavity 36 of " work " shape valve pocket respectively, escape orifice 30 by safety check 37 with described in the input interface 8 of releasing be connected, controlling delivery outlet 33 is connected with described cylinder control interface 9.
The input end of solenoid valve 3 is connected with the tap hole 30 of bleeder valve 2, and the output terminal of solenoid valve 3 is connected with the control inputs hole 32 of bleeder valve 2.
When inlet valve complement is during in unloaded state, solenoid valve 3 is opened, the pressurized gas of the upper chamber 34 of bleeder valve valve body 26 enter into the lower cavity 36 of bleeder valve valve body 26 through solenoid valve 3, promote to move on piston assembly 27, make inlet hole 28 and escape orifice 30 conductings, pressurized gas enter in suction valve valve pocket 10 from the input interface 8 of releasing of suction valve 1 through safety check 37, simultaneously the pressurized gas of the lower cavity 36 of bleeder valve valve body 26 enter into the piston 22 lower end cavitys in the cylinder body 20 of described cylinder assembly 6 from the cylinder control interface 9 of suction valve 1, promote to move on piston 22, piston 22 drives on push rod 23 and moves, push rod 23 drives and on cap assembly 5, moves and cut out described suction port 7, compressor head running makes suction valve valve pocket 10 pressure decreaseds, the elastic force that the rubber ball 16 of cap assembly 5 overcomes Compress Spring 17 under the suction function of suction valve valve pocket 10 moves down, thereby by the air inlet adjustment hole of cap assembly 5 14 and gas-entered passageway 19 conductings, the air of suction port 7 enters in suction valve valve pocket 10 from air inlet adjustment hole 14, the required oily circulating pressure of system when a small amount of air inlet in air inlet adjustment hole 14 unloads with guarantee air compressor.When inlet valve complement is during in loaded state, solenoid valve 3 cuts out, the upper chamber 34 of bleeder valve valve body 26 disconnects with the gas circuit of the lower cavity 36 of bleeder valve valve body 26, promoting piston assembly 27 moves down, inlet hole 28 and escape orifice 30 are blocked, the compressor head vacuum that suction valve valve pocket 10 is produced that turns round, and then cap assembly 5 moves down described suction port 7 is opened.
Described suction valve valve body 4 is provided with the throttling passage 38 that is communicated with described suction port 7 and described cylinder control interface 9, and this throttling passage 38 is provided with adjusting bolt 39.Adjusting bolt 39 is for the uninterrupted of adjusting joint circulation road 38.
Wherein, what described cap assembly 5 adopted rubber ball 16 and air inlet adjustment hole 14 coordinates to come adjusting air inflow quantity, when air compressor is during in unloaded state, negative pressure is formed at the bottom that is positioned at cap assembly 5 in suction valve 1, make rubber ball 16 depress Compress Spring 17 and move down, thereby air inlet adjustment hole 14 is communicated with holding cavity 15, play the effect of air inlet compensation, the upper end of holding cavity 15 is the spherical crown surface coordinating with rubber ball 16, under air inlet is impacted, can not damage rubber ball 16.In the time that the pressure drop of oil-air pressure tank arrives setup pressure value, motor stopping, air compressor inside no longer forms negative pressure, and now rubber ball 16 resets under the resilient force of Compress Spring 17, by 14 shutoff of air inlet adjustment hole.Compared with the top cover that the top cover of rubber ball 16 sealed types of the present invention seals with existing diaphragm type, first its better tightness, under High Temperature High Pressure gas-oil ring border, the more resistance to air inlet of rubber ball 16 is impacted, do not exist diaphragm easily to produce distortion and irreducible problem, can adapt to the working environment under air compressor High Temperature High Pressure oil gas, longer service life.
Wherein, the bleeder valve valve body 26 of described bleeder valve 3 adopts " work " shape valve pocket, bleeder valve valve body 26 two ends are provided with end cap, piston assembly 27 is " work " shape piston mating with " work " shape valve pocket, the top of " work " shape piston is vertically provided with through hole, make upper and lower those two ends of " work " shape piston form pressure reduction, and then in the time that solenoid valve 3 is blocked the upper chamber of " work " shape valve pocket 34 and lower cavity 36, piston assembly 27 moves down under the pressurized gas effect of bleeder valve 3 inlet holes 28, and the upper chamber of bleeder valve 3 34 and middle part cavity 35 are blocked, inlet hole 28 by bleeder valve 3 is blocked with escape orifice 30, when solenoid valve 3 is by the upper chamber of " work " shape valve pocket 34 during with lower cavity 36 conducting, under the differential pressure action that piston assembly 27 forms at the upper and lower two ends of " work " shape piston, move up, and the top through hole that passes through " work " shape piston is by the upper chamber of bleeder valve 3 34 and 35 conductings of middle part cavity, by inlet hole 28 and escape orifice 30 conductings of bleeder valve 3.Compared with the bleeder valve of existing inlet valve complement, the bleeder valve 3 of this inlet valve complement is simple in structure, moves more stablely and reliable, and is easy to processing, and cost is lower.
The above is preferred embodiments of the present invention, and the equivalence of doing according to structure, feature and principle described in patent claim of the present invention therefore all changes or modifies, and is included in patent claim of the present invention.
Claims (2)
1. an air compressor air intake control valve assembly, comprise suction valve (1), bleeder valve (2) and solenoid valve (3), solenoid valve (3) is connected with bleeder valve (2), bleeder valve (2) is connected with suction valve (1), it is characterized in that:
Suction valve (1) comprises suction valve valve body (4), cap assembly (5) and cylinder assembly (6), suction valve valve body (4) is provided with suction port (7), release input interface (8) and cylinder control interface (9), suction valve valve body (4) inside is provided with suction valve valve pocket (10), cap assembly (5) and cylinder assembly (6) are located in this suction valve valve pocket (10), cylinder control interface (9) operates for control cylinder assembly (6), cap assembly (5) coordinates and is used to open or close suction port (7) with suction valve valve body (4) under cylinder assembly (6) drives,
Described cap assembly (5) comprises lid (11), supporting plate (12) and also cap (13), lid (11) is provided with the air inlet adjustment hole (14) being communicated with suction port (7), supporting plate (12) by and cap (13) be installed on the lower end of lid (11), the lower end reaming in air inlet adjustment hole (14) forms holding cavity (15), holding cavity (15) is equiped with successively rubber ball (16) under upper, Compress Spring (17) and spring seat (18), rubber ball (16) under the resilient force of Compress Spring (17) by air inlet adjustment hole (14) shutoff, spring seat (18) is folded between lid (11) and supporting plate (12), spring seat (18) and supporting plate (12) are provided with the gas-entered passageway (19) with described holding cavity (15) lower end conducting,
Described cylinder assembly (6) comprises cylinder body (20), guide plate (21), piston (22), push rod (23), the first spring (24) and the second spring (25), piston (22) is located at cylinder body (20) inside, guide plate (21) is located on cylinder body (20), push rod (23) lower end is fixedly connected with piston (22), push rod (23) upper end is through inserting after guide plate (21) in described and cap (13), the first spring (24) be located at guide plate (21) and and cap (13) between, the second spring (25) is located between piston (22) and guide plate (21), cylinder control interface (9) is communicated with the cavity that is positioned at piston (22) below in cylinder body (20),
Bleeder valve (2) comprises bleeder valve valve body (26) and piston assembly (27), bleeder valve valve body (26) is provided with inlet hole (28), tap hole (29), escape orifice (30), exhaust port (31), control inputs hole (32) and control delivery outlet (33), bleeder valve valve body (26) inside is provided with " work " shape valve pocket, piston assembly (27) can be located in this " work " shape valve pocket up or down, inlet hole (28) and tap hole (29) are communicated with the upper chamber (34) of " work " shape valve pocket respectively, escape orifice (30) is communicated with the middle part cavity (35) of " work " shape valve pocket, exhaust port (31), control inputs hole (32) and control delivery outlet (33) are communicated with the lower cavity (36) of " work " shape valve pocket respectively, escape orifice (30) by safety check (37) with described in the input interface (8) of releasing be connected, controlling delivery outlet (33) is connected with described cylinder control interface (9),
The input end of solenoid valve (3) is connected with the tap hole (30) of bleeder valve (2), and the output terminal of solenoid valve (3) is connected with the control inputs hole (32) of bleeder valve (2).
2. air compressor air intake control valve assembly according to claim 1, it is characterized in that: described suction valve valve body (4) is provided with the throttling passage (38) that is communicated with described suction port (7) and described cylinder control interface (9), and this throttling passage (38) is provided with adjusting bolt (39).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410328491.2A CN104088793B (en) | 2014-07-10 | 2014-07-10 | A kind of air compressor air intake control valve assembly |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410328491.2A CN104088793B (en) | 2014-07-10 | 2014-07-10 | A kind of air compressor air intake control valve assembly |
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| CN104088793A true CN104088793A (en) | 2014-10-08 |
| CN104088793B CN104088793B (en) | 2016-03-02 |
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| CN201410328491.2A Active CN104088793B (en) | 2014-07-10 | 2014-07-10 | A kind of air compressor air intake control valve assembly |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107575610A (en) * | 2017-10-13 | 2018-01-12 | 南通市红星空压机配件制造有限公司 | Biogas air inlet valve of screw compressor |
| CN107740759A (en) * | 2017-10-27 | 2018-02-27 | 浙江精雷电器股份有限公司 | The unidirectional eduction valve of high-performance plug-in compressor |
| CN108286620A (en) * | 2018-04-09 | 2018-07-17 | 南通市红星空压机配件制造有限公司 | air inlet valve of screw compressor |
| CN108425832A (en) * | 2018-01-25 | 2018-08-21 | 温州曼哲科技有限公司 | A kind of normally closed intake valve of air compressor |
| CN109282067A (en) * | 2018-10-18 | 2019-01-29 | 奉化意格特机械制造有限公司 | A kind of vehicle-mounted intake valve |
| CN109505772A (en) * | 2018-12-24 | 2019-03-22 | 南通市红星空压机配件制造有限公司 | Dry type oil free screw air compressor machine gas control intake valve |
| CN109915379A (en) * | 2019-04-12 | 2019-06-21 | 南通市红星空压机配件制造有限公司 | A kind of intake valve open in usual |
| CN112694241A (en) * | 2021-02-26 | 2021-04-23 | 深圳市应有仁建材有限公司 | Glass blowpipe device for adjusting air intake of air pump according to air blowing amount |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109282067B (en) * | 2018-10-18 | 2023-09-22 | 浙江意格特机械制造有限公司 | Vehicle-mounted air inlet valve |
| CN109505772A (en) * | 2018-12-24 | 2019-03-22 | 南通市红星空压机配件制造有限公司 | Dry type oil free screw air compressor machine gas control intake valve |
| CN109915379A (en) * | 2019-04-12 | 2019-06-21 | 南通市红星空压机配件制造有限公司 | A kind of intake valve open in usual |
| CN112694241A (en) * | 2021-02-26 | 2021-04-23 | 深圳市应有仁建材有限公司 | Glass blowpipe device for adjusting air intake of air pump according to air blowing amount |
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|---|---|
| CN104088793B (en) | 2016-03-02 |
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