CN107387778A - A kind of flow valve - Google Patents

A kind of flow valve Download PDF

Info

Publication number
CN107387778A
CN107387778A CN201710824884.6A CN201710824884A CN107387778A CN 107387778 A CN107387778 A CN 107387778A CN 201710824884 A CN201710824884 A CN 201710824884A CN 107387778 A CN107387778 A CN 107387778A
Authority
CN
China
Prior art keywords
valve
power
assisted
pot cover
jam pot
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.)
Granted
Application number
CN201710824884.6A
Other languages
Chinese (zh)
Other versions
CN107387778B (en
Inventor
李建伟
李鑫
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.)
Cixi Micro Cube Intelligent Technology Co Ltd
Original Assignee
Cixi Micro Cube Intelligent Technology Co Ltd
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 Cixi Micro Cube Intelligent Technology Co Ltd filed Critical Cixi Micro Cube Intelligent Technology Co Ltd
Priority to CN201710824884.6A priority Critical patent/CN107387778B/en
Publication of CN107387778A publication Critical patent/CN107387778A/en
Application granted granted Critical
Publication of CN107387778B publication Critical patent/CN107387778B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32Details
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00Actuating devices; Operating means; Releasing devices
    • F16K31/02Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/04Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
    • F16K31/047Actuating devices; Operating means; Releasing devices electric; magnetic using a motor characterised by mechanical means between the motor and the valve, e.g. lost motion means reducing backlash, clutches, brakes or return means
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00Actuating devices; Operating means; Releasing devices
    • F16K31/44Mechanical actuating means
    • F16K31/53Mechanical actuating means with toothed gearing

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mechanically-Actuated Valves (AREA)

Abstract

The invention discloses a kind of flow valve, the present invention is simple in construction, when big air pressure enters from air inlet, the pressure of air inlet port regions can increase rapidly, pressure is applied to all faces in air inlet port regions, and jam pot cover component and power-assisted ring assemblies all receive pressure, because valve is in close valve state, the power-assisted cavity of valve body and gas outlet region do not have gas, so without pressure.Power-assisted ring is by thrust up, if at this moment valve opening, the pressure of jam pot cover component is stressed equal to upper bracket surface subtracts the pressure on power-assisted surface, then the pressure of jam pot cover component will be reduced a lot, the resistance of valve opening can also be reduced a lot, and such valve opening is just easier.In the case where pressure is big, the time of valve opening and power consumption are but many without increase.Rear air inlet port regions are equal with the power-assisted cavity of valve body and the pressure in gas outlet region in place for valve opening, the influence so pass valve will not be stressed.

Description

A kind of flow valve
Technical field
The present invention relates to valve body structure technical field, specially a kind of flow valve.
Background technology
Flow valve is mainly used in the one kind for belonging to stop valve among natural gas line, and flow valve is usually to be carried out using screw mandrel Valve opening or closing are driven, traditional flow valve valve, it is to carry out band movable valve valve opening with the power slowed down by motor to open, this Open and be easier during sample low-pressure, but open when pressure is big just relatively difficult so that flow is obstructed, it is difficult to reaches flow valve Control purpose.
The content of the invention
It is an object of the invention to provide a kind of flow valve, to solve the problems mentioned in the above background technology.
To achieve the above object, the present invention provides following technical scheme:A kind of flow valve, including valve body, positioned at valve body bottom Air inlet on the left of portion, the gas outlet on the right side of body base, the valve seat positioned at body top, the power-assisted positioned at valve inner Group, it is characterised in that:
Valve bush is provided with the gas outlet, the valve bush is provided with jam pot cover, the jam pot cover and valve away from gas outlet side Serve as a contrast and sealed for inclined-plane, the jam pot cover is located at valve bush side and is fixedly installed jam pot cover pressing plate;Jam pot cover component seals with valve bush for inclined-plane, Rear valve air inlet and gas outlet is opened not to be obstructed into in-line, such air-flow, unlike conventional valve air inlet and outlet are at a right angle, air-flow meeting It is obstructed;
The jam pot cover fixed sleeves are provided with upper bracket, and the upper bracket is away from valve bush side integrally formed with a projection, institute State projection and be wrapped with left socle seat and right support seat, semicircle is provided with vertical direction between the left socle and right support Perforation so that form cylindrical bore after left socle and right support merging are fixed, worn in left socle and the right support horizontal direction Provided with jam pot cover locating shaft;
The power-assisted group includes assister bar, the locating rack being arranged on valve seat, and the power-assisted cavity bottom of the valve body is fixed There is locating ring, the assister bar is located in locating ring center, power-assisted ring is equipped with the assister bar, the assister bar is outer, position Spring is arranged between body top and power-assisted ring, is fixed at the top of the assister bar in horizontal direction and is welded with the transmission worn Bar, described drive link one end is located in the hollow hole on locating rack, integrally formed with bearing two on the other end;
Tooth rest, motor and lifter are welded with the valve seat, excessive gear is arranged with outside the motor output shaft, Ratchet is provided with the tooth rest.Lifter is made up of on upper surface helical form, and has bearing above drive link, this The sample bearing of drive link and helicoid in valve opening are linear contact lays, and bearing rolls on helicoid when drive link rises, this side The transmission of formula, frictional force can very littles.Also can be more reliable.
Preferably, by being disposed with sealing joint circle and valve bush O-ring within outer between the valve bush and valve body.
Preferably, the chamber and convex shape formed between the left socle seat and right support seat is in the same size, and left branch Stand is fixedly connected with right support seat by bolt and nut.
Preferably, it is integrally formed positioned at jam pot cover locating shaft both sides in the valve body fluted, and jam pot cover locating shaft is arranged on Between two grooves, for positioning jam pot cover.
Preferably, power-assisted ring sealing ring, the positioning are provided between the power-assisted cavity inner wall of the power-assisted ring and valve body Ring center is fixed with copper sheathing, and the copper sheathing overall diameter is consistent with locating ring interior diameter.
Preferably, the drive link is provided with a bearing with hollow hole contact position, and the assister bar is located at below valve seat It is outer to be arranged with linear bearing, it is provided with shaft pressuring plate below the linear bearing.
Preferably, the excessive gear and ratchet are ratcheting, and the lifter bottom is tooth form, the ratchet with Lifter bottom is ratcheting, and the lifter upper surface is screw type, and the bearing two is rolled with lifter upper surface and connected.
Compared with prior art, the beneficial effects of the invention are as follows:The present invention is simple in construction, when big air pressure enters from air inlet Enter, the pressure of air inlet port regions can increase rapidly, and pressure is applied to all faces in air inlet port regions, jam pot cover component and power-assisted ring assemblies Pressure is all received, because valve is in close valve state, the power-assisted cavity of valve body and gas outlet region do not have gas, so not having There is pressure.Power-assisted ring is by thrust up, if at this moment valve opening, the pressure of jam pot cover component is pressurized equal to upper bracket surface Power subtracts the pressure on power-assisted surface, then and the pressure of jam pot cover component will be reduced a lot, and the resistance of valve opening can also be reduced a lot, this Sample valve opening is just easier.In the case where pressure is big, the time of valve opening and power consumption are but many without increase.Valve opening is laggard in place Port region is equal with the power-assisted cavity of valve body and the pressure in gas outlet region, the influence so pass valve will not be stressed.
Brief description of the drawings
Fig. 1 is internal structure stereogram of the present invention;
Fig. 2 is internal structure schematic diagram of the present invention;
Fig. 3 is power-assisted group dimensional structure diagram;
Fig. 4 is left and right support standing valve seal structure schematic diagram;
Fig. 5 is jam pot cover structural perspective.
In figure:1- valve bodies;2- air inlets;3- gas outlets;4- valve seats;5- power-assisted groups;6- valve bushes;7- jam pot covers;8- jam pot cover pressures Plate;9- upper brackets;10- is raised;11- left socle seats;;12- right support seats;13- cylindrical bores;14- jam pot cover locating shafts;15- is helped Power bar;16- locating racks;17- power-assisted cavitys;18- locating rings;19- power-assisted rings;20- springs;21- drive links;22- hollow holes; 23- bearings two;24- tooth rests;25- motors;26- lifters;27- excessive gears;28- ratchets;29- sealing joint circles; 30- valve bush O-rings;31- grooves;32- power-assisted ring sealing rings;33- copper sheathings;34- bearings;35- linear bearings;36- shaft pressuring plates;a- Air inlet port regions;The power-assisted cavity of b- valve bodies and gas outlet region.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made Embodiment, belong to the scope of protection of the invention.
Refer to shown in accompanying drawing, the present invention provides a kind of technical scheme:A kind of flow valve, including valve body 1, positioned at valve body 1 The air inlet 2 of bottom left, the valve seat 4 positioned at the gas outlet 3 of the bottom right of valve body 1, positioned at the top of valve body 1, in valve body 1 The power-assisted group 5 in portion, it is characterised in that:
Valve bush 6 is provided with the gas outlet 2, the valve bush 6 is provided with jam pot cover 7, the jam pot cover away from the side of gas outlet 2 7 and valve bush 6 be inclined-plane sealing, the jam pot cover 7 is located at the side of valve bush 6 and is fixedly installed jam pot cover pressing plate 8;Jam pot cover component and valve bush 6 Sealed for inclined-plane, open rear valve air inlet and gas outlet and be not obstructed into in-line, such air-flow, unlike conventional valve air inlet and outlet into Right angle, air-flow can be obstructed;
The fixed sleeves of jam pot cover 7 are provided with upper bracket 9, and the upper bracket 9 is raised integrally formed with one away from the side of valve bush 6 10, described raised 10 are wrapped with left socle seat 11 and right support seat 12, vertical side between the left socle 11 and right support 12 Semicircle perforation 13 is provided with upwards so that forms cylindrical bore 13, the left side after left socle 11 and the merging of right support 12 are fixed Jam pot cover locating shaft 14 is equipped with support 11 and the horizontal direction of right support 12;
The power-assisted group 5 includes assister bar, the locating rack being arranged on valve seat, and the bottom of power-assisted cavity 17 of the valve body is consolidated Surely there is locating ring 18, the assister bar 15 is located in locating ring center, and power-assisted ring 19 is equipped with the assister bar 15, described to help Power bar is outer, spring 20 is arranged between the top of valve body 1 and power-assisted ring 19, in the fixed horizontal direction in the top of assister bar 15 The drive link 21 worn is welded with, described one end of drive link 21 is located in the hollow hole 22 on locating rack 16, one on the other end It is body formed to have bearing 2 23;
Tooth rest 24, motor 25 and lifter 26 are welded with the valve seat 4, was arranged with outside the motor output shaft Gear 27 is spent, ratchet 28 is provided with the tooth rest 24.Lifter 26 is made up of on upper surface helical form, and drive link 15 have bearing 2 23 again above, and the bearing 2 23 of drive link 15 and helicoid are linear contact lays so in valve opening, on drive link 15 Bearing 2 23 rolls on helicoid when rising, the transmission of this mode, and frictional force can very little.Also can be more reliable.
Further, by being disposed with sealing joint circle 29 within outer and valve bush is O-shaped between the valve bush 6 and valve body 1 Circle 30, the chamber formed between the left socle seat 11 and right support seat 12 is consistent with raised 10 shape sizes, and left socle seat 11 with right support 12 be fixedly connected by bolt and nut, be integrally formed positioned at jam pot cover locating shaft both sides in the valve body fluted 31, and jam pot cover locating shaft 14 is arranged between two grooves 31, for positioning jam pot cover 7, the power-assisted of the power-assisted ring 19 and valve body 1 It is provided with power-assisted ring sealing ring 32 between the inwall of cavity 17, the center of locating ring 18 is fixed with copper sheathing 33, outside the copper sheathing 33 Diameter is consistent with the interior diameter of locating ring 18, and the drive link 15 is provided with a bearing 34 with the contact position of hollow hole 22, described to help Power bar 15, which is located at outside the lower section of valve seat 4, is arranged with linear bearing 35, and the lower section of linear bearing 35 is provided with shaft pressuring plate 36, the mistake Spend gear 27 and ratchet 28 is ratcheting, the bottom of lifter 26 is tooth form, the ratchet 28 and the bottom of lifter 26 Ratcheting, the upper surface of lifter 26 is screw type, and the bearing 2 23 is rolled with the upper surface of lifter 26 and connected.
When the present invention comes into operation:When being powered to motor 25, after ratchet 28 engages with the gear of lifter, The gear of lifter 26 with the drive link 21 in power-assisted group 5 toward up moving clockwise, due to power-assisted group 5 and jam pot cover component It is connected, jam pot cover component also can up move and realize valve opening, and gas can flows to gas outlet 3 from air inlet 2.
When valve is in valve opening, because spring 20 compresses, while energy storage.When motor 25 rotates counterclockwise, unidirectional tooth Take turns the 28 past gears with lifter to be separated from, due to spring-compressed, counter can push away power-assisted group 5, power-assisted group 5 can be rapid past with jam pot cover 7 Under fall, realize close valve.
The present invention principle be:When big air pressure enters from air inlet 2, air inlet port regions a pressure can increase rapidly, pressure Power is applied to all faces of air inlet port regions a, and jam pot cover component and power-assisted ring 19 all receive pressure, and valve shape is closed because valve is in State, the power-assisted cavity and gas outlet region b of valve body do not have gas, so without pressure.Power-assisted ring 19 by thrust up, If at this moment valve opening, the pressure of jam pot cover component is stressed equal to the surface of upper bracket 9 subtracts the pressure on power-assisted surface, then valve The pressure of sealing assembly will be reduced a lot, and the resistance of valve opening can also be reduced a lot, and such valve opening is just easier.Big in pressure In the case of valve opening time and power consumption it is but many without increase.Valve opening in place after air inlet port regions and valve body power-assisted cavity and Gas outlet region b pressure is equal, the influence so pass valve will not be stressed.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with A variety of changes, modification can be carried out to these embodiments, replace without departing from the principles and spirit of the present invention by understanding And modification, the scope of the present invention is defined by the appended.

Claims (7)

1. a kind of flow valve, including valve body, the air inlet on the left of body base, the gas outlet on the right side of body base, Valve seat positioned at body top, the power-assisted group positioned at valve inner, it is characterised in that:
Valve bush is provided with the gas outlet, the valve bush is provided with jam pot cover away from gas outlet side, and the jam pot cover and valve bush are Inclined-plane seals, and the jam pot cover is located at valve bush side and is fixedly installed jam pot cover pressing plate;
The jam pot cover fixed sleeves are provided with upper bracket, and the upper bracket is raised integrally formed with one away from valve bush side, described convex Rise and be wrapped with left socle seat and right support seat, being provided with semicircle on vertical direction between the left socle and right support wears Hole so that form cylindrical bore after left socle and right support merging are fixed, worn in left socle and the right support horizontal direction There is jam pot cover locating shaft;
The power-assisted group includes assister bar, the locating rack being arranged on valve seat, and the power-assisted cavity bottom of the valve body, which is fixed with, to be determined Position ring, the assister bar is located in locating ring center, is equipped with power-assisted ring on the assister bar, and the assister bar is outer, positioned at valve Spring is arranged between body top and power-assisted ring, is fixed at the top of the assister bar in horizontal direction and is welded with the drive link worn, Described drive link one end is located in the hollow hole on locating rack, integrally formed with bearing two on the other end;
Tooth rest, motor and lifter are welded with the valve seat, excessive gear is arranged with outside the motor output shaft, it is described Ratchet is provided with tooth rest.
A kind of 2. flow valve according to claim 1, it is characterised in that:Between the valve bush and valve body by within outer successively It is provided with sealing joint circle and valve bush O-ring.
A kind of 3. flow valve according to claim 1, it is characterised in that:Formed between the left socle seat and right support seat Chamber and convex shape it is in the same size, and left socle seat is fixedly connected with right support seat by bolt and nut.
A kind of 4. flow valve according to claim 1, it is characterised in that:It is located at jam pot cover locating shaft both sides one in the valve body It is body formed fluted, and jam pot cover locating shaft is arranged between two grooves, for positioning jam pot cover.
A kind of 5. flow valve according to claim 1, it is characterised in that:The power-assisted cavity inner wall of the power-assisted ring and valve body Between be provided with power-assisted ring sealing ring, the locating ring center is fixed with copper sheathing, the copper sheathing overall diameter and locating ring interior diameter Unanimously.
A kind of 6. flow valve according to claim 1, it is characterised in that:The drive link is set with hollow hole contact position There is a bearing, the assister bar, which is located at outside valve seat lower section, is arranged with linear bearing, and shaft pressuring plate is provided with below the linear bearing.
A kind of 7. flow valve according to claim 1, it is characterised in that:The excessive gear and ratchet are ratcheting, institute It is tooth form to state lifter bottom, and the ratchet and lifter bottom are ratcheting, and the lifter upper surface is screw type, described Bearing two is rolled with lifter upper surface and connected.
CN201710824884.6A 2017-09-14 2017-09-14 A kind of flow valve Active CN107387778B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710824884.6A CN107387778B (en) 2017-09-14 2017-09-14 A kind of flow valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710824884.6A CN107387778B (en) 2017-09-14 2017-09-14 A kind of flow valve

Publications (2)

Publication Number Publication Date
CN107387778A true CN107387778A (en) 2017-11-24
CN107387778B CN107387778B (en) 2019-04-26

Family

ID=60351503

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710824884.6A Active CN107387778B (en) 2017-09-14 2017-09-14 A kind of flow valve

Country Status (1)

Country Link
CN (1) CN107387778B (en)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997030616A1 (en) * 1996-02-24 1997-08-28 Ban Sung Co., Ltd. Device for automatically controlling the steam valve in electric pressure cookers
CN2510677Y (en) * 2001-10-23 2002-09-11 朱建 Blocking-free, low-power-consumption, high-reliable, IC card gas meter motor-driving valve
JP2003166661A (en) * 2001-12-03 2003-06-13 Aichi Tokei Denki Co Ltd Opening/closing valve for gas meter
CN102313067A (en) * 2010-06-30 2012-01-11 株式会社电装 Valve control equipment
CN103511716A (en) * 2012-06-20 2014-01-15 常州乐士雷利电机有限公司 Drain valve
CN103629017A (en) * 2012-08-22 2014-03-12 株式会社电装 Exhaust control valve device for internal combustion engine
CN104455672A (en) * 2013-09-18 2015-03-25 博格华纳公司 Actuator and valve arrangement
CN206347123U (en) * 2016-12-27 2017-07-21 金卡智能集团股份有限公司 A kind of gas meter, flow meter controls valve arrangement

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997030616A1 (en) * 1996-02-24 1997-08-28 Ban Sung Co., Ltd. Device for automatically controlling the steam valve in electric pressure cookers
CN2510677Y (en) * 2001-10-23 2002-09-11 朱建 Blocking-free, low-power-consumption, high-reliable, IC card gas meter motor-driving valve
JP2003166661A (en) * 2001-12-03 2003-06-13 Aichi Tokei Denki Co Ltd Opening/closing valve for gas meter
CN102313067A (en) * 2010-06-30 2012-01-11 株式会社电装 Valve control equipment
CN103511716A (en) * 2012-06-20 2014-01-15 常州乐士雷利电机有限公司 Drain valve
CN103629017A (en) * 2012-08-22 2014-03-12 株式会社电装 Exhaust control valve device for internal combustion engine
CN104455672A (en) * 2013-09-18 2015-03-25 博格华纳公司 Actuator and valve arrangement
CN206347123U (en) * 2016-12-27 2017-07-21 金卡智能集团股份有限公司 A kind of gas meter, flow meter controls valve arrangement

Also Published As

Publication number Publication date
CN107387778B (en) 2019-04-26

Similar Documents

Publication Publication Date Title
CN201284835Y (en) Double-valve core balancing type large diameter supercritical parameter break valve
CN201141445Y (en) Bidirectional hard-sealing non-abrasion rail butterfly valve
CN202691122U (en) Top entry type online maintenance ball valve
CN201487296U (en) Automobile gearbox pneumatically-controlled reversing valve
CN107387778A (en) A kind of flow valve
CN101210632B (en) Gyration type hydraulic operated valve
CN207647771U (en) A kind of intake valve of screw-rod air compressor
CN201818810U (en) Sealing type butterfly valve at bilateral sides of shaft sleeve
CN202992251U (en) Valve seat separable ball valve
CN202597469U (en) Internal-leakage type gear motor shaft sleeve
CN201818807U (en) Anti-leak butterfly valve capable of being opened and closed flexibly
CN103939310B (en) The board-like radial plunger pump of small-power dish flow
CN207111332U (en) A kind of ship hand steering gear novel plunger-type self-lock manual pump
CN218718915U (en) Parallel electro-hydraulic gate valve
CN202834138U (en) Parallel type gate valve with balance hole
CN105156409B (en) A kind of electro-hydraulic actuator of ring taps formula
CN200999906Y (en) Rotary type hydraulic valve
CN207034199U (en) The multi-purpose double filtering stop valves of one kind
CN103470503B (en) Axial bypass regulates the sliding vane refrigeration compressor of displacement
CN203494275U (en) Online oil filter integrated machine for on-load tap switch
CN204061933U (en) The oil returning valve structure of hydraulic jack
CN111197552A (en) Plane flow distribution cycloid hydraulic motor
CN218818202U (en) High stability type stop valve
CN218267529U (en) Two-position three-way pilot valve
CN2314190Y (en) Magnetic driving ball valve

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant