CN108253147A - A kind of combination throttle valve - Google Patents

A kind of combination throttle valve Download PDF

Info

Publication number
CN108253147A
CN108253147A CN201810209980.4A CN201810209980A CN108253147A CN 108253147 A CN108253147 A CN 108253147A CN 201810209980 A CN201810209980 A CN 201810209980A CN 108253147 A CN108253147 A CN 108253147A
Authority
CN
China
Prior art keywords
valve
fluid line
groove
gear ring
throttle valve
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
CN201810209980.4A
Other languages
Chinese (zh)
Inventor
刘忠林
毕凯
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.)
Jiaxing Daiyuan Vacuum Technology Co Ltd
Original Assignee
Jiaxing Daiyuan Vacuum 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 Jiaxing Daiyuan Vacuum Technology Co Ltd filed Critical Jiaxing Daiyuan Vacuum Technology Co Ltd
Priority to CN201810209980.4A priority Critical patent/CN108253147A/en
Publication of CN108253147A publication Critical patent/CN108253147A/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
    • F16K3/029—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with two or more gates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/04—Construction of housing; Use of materials therefor of sliding valves
    • F16K27/044—Construction of housing; Use of materials therefor of sliding valves slide valves with flat obturating members
    • F16K27/045—Construction of housing; Use of materials therefor of sliding valves slide valves with flat obturating members with pivotal obturating members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
    • F16K3/0254—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor being operated by particular means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
    • F16K3/0281—Guillotine or blade-type valves, e.g. no passage through the valve member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
    • F16K3/03—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with a closure member in the form of an iris-diaphragm
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
    • F16K31/041—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor for rotating valves
    • F16K31/043—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor for rotating valves characterised by mechanical means between the motor and the valve, e.g. lost motion means reducing backlash, clutches, brakes or return means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/44—Mechanical actuating means
    • F16K31/53—Mechanical actuating means with toothed gearing
    • F16K31/535—Mechanical actuating means with toothed gearing for rotating valves

Abstract

A kind of combination throttle valve, including gate valve and pivoting leaf plate valve, the gate valve has valve plate and the driving device for drive valve plate movement, the pivoting leaf plate valve includes motor, worm screw, gear ring, several blades and several pinion gears, when driving device drive valve plate is moved to the second state, motor driving worm screw rotation, worm screw drives gear ring rotation, so as to drive several pinion mates that should rotate, so that center position of the stub end of blade far from or close to fluid line moves, the openings of sizes at fluid line center can so be adjusted, so as to adjust the fluid flow of fluid line, adapt to different operating mode needs.

Description

A kind of combination throttle valve
Technical field
The present invention relates to nano material production field, particularly a kind of combination throttle valve.
Background technology
The mode that sputtering method makes nano material has：Magnetron sputtering, bias sputtering and reactive sputtering etc..Wherein magnetron sputtering Principle be：Electronics collides during accelerating to fly to substrate under the action of electric field with ar atmo, ionizes out a large amount of Argon ion and electronics, electronics fly to substrate.Argon ion accelerates to bombard target under the action of electric field, and it is former to sputter a large amount of target Son, the target atom being in neutrality are deposited on substrate and form a film.Secondary electron is during accelerating to fly to substrate by magnetic field Lip river logical sequence The influence of magnetic force is bound in the heating region of target surface, and plasma density is very high in the region, secondary electron It is circled under the influence of a magnetic field around target surface.
In the manufacturing process of nano material, need to supply argon gas and cooling fluid etc..Argon gas or cooling fluid are in the duct Break-make is by throttle valve control.Existing throttle valve using gate valve, can only generally switch in standard-sized sheet and fully closed two states, it is impossible to Enough adjust the uninterrupted of argon gas or cooling fluid.And different operating modes needs the argon gas or cooling fluid of different flow, the prior art In, it is needed under different operating modes using different nano material making apparatus, different nano material making apparatus has difference The fluid line and gate valve of specification.
Invention content
In view of this, the present invention provides the combination throttlings of a kind of adjustable flow, the adjustable flow for being adapted to different operating modes Valve, to solve the above problems.
A kind of combination throttle valve, for adjusting the fluid flow in fluid line, including gate valve and pivoting leaf plate valve, institute It states gate valve to set with pivoting leaf plate valve parallel interval and be vertically positioned in fluid line at least partly, the gate valve tool Have valve plate and a driving device moved for drive valve plate, the valve plate have the first state that is fully located in fluid line and The second state of fluid line is opened completely, and the pivoting leaf plate valve includes motor, worm screw, gear ring, several blades and several Pinion gear, the peripheral surface of the gear ring are equipped with turbine, and inner peripheral surface is equipped with the output shaft company of tooth socket, the worm screw and motor It connects, and is engaged with the turbine of gear ring, the pinion rotation is set on fluid line, the tooth of the pinion gear and gear ring Slot engages, and the blade has stub end and small head end, and small head end is connect with pinion gear, and stub end is free end.
Further, the fluid line has outer tube and inner tube, the hollow formation fluid channel of inner tube, and the pinion gear turns Dynamic to be set in the inner tube of fluid line, the outer tube coats gear ring from outside.
Further, the pinion gear is connect by fixed plate with fluid line, and the pinion rotation is connected to fixation On plate, the fixed plate is connect with the inner tube of fluid line or fluid line.
Further, maximum rotation angle any one or more in the gear ring, pinion gear or blade is 50-70 Degree.
Further, maximum rotation angle any one or more in the gear ring, pinion gear or blade is 62 degree.
Further, a side of the gear ring offers the first groove of annular, and several swivel bearings are located at should In groove, the gear ring is rotatablely connected by groove and swivel bearing, and the swivel bearing passes through fixing axle and fluid line Connection.
Further, the bottom of first groove is further opened with the second groove with the first texturearunaperpendicular, the second groove Width be more than the width of the first groove, the swivel bearing is located in the second groove, and the diameter of swivel bearing is more than first The width of groove.
Compared with prior art, combination throttle valve of the invention includes gate valve and pivoting leaf plate valve, the gate valve tool There are valve plate and the driving device moved for drive valve plate, if the pivoting leaf plate valve includes motor, worm screw, gear ring, cured leaf Piece and several pinion gears, when driving device drive valve plate is moved to the second state, motor driving worm screw rotation, worm screw band moving teeth Torus rotates, so as to drive several pinion mates that should rotate, so that the stub end of blade is separate or close to fluid line Center position moves, and can so adjust the openings of sizes at fluid line center, so as to adjust the fluid flow of fluid line, fits Answer different operating mode needs.
Description of the drawings
The embodiment of the present invention is described below in conjunction with attached drawing, wherein：
Fig. 1 is the side sectional view of combination throttle valve provided in an embodiment of the present invention.
Fig. 2 is along the sectional view of I-I lines in Fig. 1.
Fig. 3 is the stereoscopic schematic diagram of the pivoting leaf plate valve in Fig. 2.
Fig. 4 is another visual angle schematic diagram of the pivoting leaf plate valve in Fig. 2.
Fig. 5 is in the schematic diagram of closed state for each blade in Fig. 2.
Fig. 6 is the schematic diagram that each blade in Fig. 2 is gradually opened.
Specific embodiment
Specific embodiments of the present invention are further elaborated below based on attached drawing.It should be understood that herein The protection domain being not intended to limit the present invention to the explanation of the embodiment of the present invention.
It please refers to Fig.1, is combination throttle valve provided in an embodiment of the present invention, for adjusting the stream in fluid line 100 Body flow, including gate valve 200 and pivoting leaf plate valve 300.
Gate valve 200 sets with 300 parallel interval of pivoting leaf plate valve and is vertically positioned at fluid line 100 at least partly In.
Gate valve 200 has driving device 210 and valve plate 220, and valve plate 220 is movably located in fluid line 100, and It is vertically arranged with fluid line 100.210 actuatable valve plate 220 of driving device moves up and down, and the mobile status of valve plate 220 has two A, first state is entirely located in fluid line 100, and fluid line 100 is completely enclosed, and the second state is to leave stream completely Body pipeline 100, fluid line 100 are opened completely.
It please refers to Fig.2, fluid line 100 has outer tube 110 and inner tube 120, and inner tube is hollow to form fluid channel 130.
Please continue to refer to Fig. 3 and Fig. 4, if pivoting leaf plate valve 300 includes motor 310, worm screw 320, gear ring 330, cured leaf Piece 340 and several pinion gears 350.
The peripheral surface of gear ring 330 is equipped with turbine, and inner peripheral surface is equipped with tooth socket 332.
Worm screw 320 and the output axis connection of motor 310, and engaged with the turbine of gear ring 330.
Blade 340 has stub end and small head end, and small head end is connect with pinion gear 350, and stub end is free end.Pinion gear 350 are rotatably dispose in the inner tube 120 of fluid line 100, and pinion gear 350 is engaged with the tooth socket 332 of gear ring 330.Pivoting leaf The original state of plate valve 300 is closed state, and even cured leaf piece 340 is snugly into each other so as to which fluid line 100 be completely enclosed.Stream The outer tube 110 of body pipeline 100 coats gear ring 330 from outside.
In present embodiment, pinion gear 350 is connect by a fixed plate 350 with the inner tube 120 of fluid line 100, i.e., small Gear 350 is rotationally connected in fixed plate 350, and fixed plate 350 is connect with the inner tube 120 of fluid line 100.
In present embodiment, the first groove 332 of annular, several rotary shafts are offered on a side of gear ring 330 It holds 372 to be located in the groove 332, gear ring 330 is rotatablely connected by groove 332 and swivel bearing 372, and swivel bearing 372 is logical The outer tube 110 or inner tube 120 for crossing fixing axle 370 and fluid line 100 are fixedly connected.
Further, the bottom of the first groove 332 is further opened with second groove vertical with the first groove 332, and second is recessed The width of slot is more than the width of the first groove 332, and swivel bearing 372 is located in the second groove.The diameter of swivel bearing 372 is more than The width of first groove 332.
When 210 drive valve plate 220 of driving device is moved upward to the second state, motor can drive worm screw 320 to rotate, snail Bar 320 drives gear ring 330 to rotate, and such as the counter clockwise direction of Fig. 5 and Fig. 6, turns so as to which several pinion gears 350 be driven also to correspond to It is dynamic, so that center position movement of the stub end of blade 340 far from fluid line 100, so in fluid line 100 Gradually increased opening 400 is formed centrally, as shown in state a, b, c in Fig. 6, so as to adjust the fluid stream in fluid line 100 Amount, adapts to different operating mode needs.When opening 400 is maximum, fluid line 100 is in larger open state.
, whereas if to turn the flow of fluid line 100 down, motor can drive worm screw 320 to rotate, and worm screw 320 is with moving teeth Torus 330 rotates, and such as the clockwise direction of Fig. 5 and Fig. 6, is rotated so as to which several pinion gears 350 be driven also to correspond to, so that leaf The stub end of piece 340 is moved close to the center position of fluid line 100, so that opening 400 is gradually reduced.
Further, maximum rotation angle any one or more in gear ring 330, pinion gear 350 or blade 340 is 50-70 degree in this angular range, can adjust the flow of fluid line 100, if more than this angle, to fluid reliablely The flow effect of pipeline 100 is smaller；If less than this angle, fluid line 100 is difficult to reach larger open state, i.e., significantly subtracts The small maximum adjustable flow value of fluid line 100.The maximum rotation angle of blade 340 is 62 degree in present embodiment.
The foregoing is merely a prefered embodiment of the invention, is not used to limitation protection scope of the present invention, any in the present invention Modification, equivalent replacement or improvement in spirit etc., all cover in scope of the presently claimed invention.

Claims (7)

1. a kind of combination throttle valve, for adjusting the fluid flow in fluid line, it is characterised in that：The combination throttle valve packet Gate valve and pivoting leaf plate valve are included, the gate valve sets with pivoting leaf plate valve parallel interval and is vertically positioned at least partly In fluid line, the gate valve has valve plate and the driving device for drive valve plate movement, and the valve plate has complete position Include motor, snail in the first state in fluid line and complete the second state for opening fluid line, the pivoting leaf plate valve Bar, gear ring, several blades and several pinion gears, the peripheral surface of the gear ring are equipped with turbine, and inner peripheral surface is equipped with tooth socket, The worm screw and the output axis connection of motor, and engaged with the turbine of gear ring, the pinion rotation is set to fluid line On, the pinion gear is engaged with the tooth socket of gear ring, and the blade has stub end and small head end, and small head end connects with pinion gear It connects, stub end is free end.
2. combination throttle valve as described in claim 1, it is characterised in that：The fluid line has outer tube and inner tube, inner tube Hollow formation fluid channel, the pinion rotation are set in the inner tube of fluid line, and the outer tube coats gear from outside Ring.
3. combination throttle valve as claimed in claim 1 or 2, it is characterised in that：The pinion gear passes through fixed plate and fluid hose Road connects, and the pinion rotation is connected in fixed plate, and the fixed plate connects with the inner tube of fluid line or fluid line It connects.
4. combination throttle valve as described in claim 1, it is characterised in that：It is any one in the gear ring, pinion gear or blade A or multiple maximum rotation angle is 50-70 degree.
5. combination throttle valve as claimed in claim 4, it is characterised in that：It is any one in the gear ring, pinion gear or blade A or multiple maximum rotation angle is 62 degree.
6. combination throttle valve as described in claim 1, it is characterised in that：One side of the gear ring offers annular First groove, several swivel bearings are located in the groove, and the gear ring is rotatablely connected by groove and swivel bearing, the rotation Shaft is held to be connect by fixing axle with fluid line.
7. combination throttle valve as claimed in claim 6, it is characterised in that：The bottom of first groove is further opened with and first Second groove of texturearunaperpendicular, the width of the second groove are more than the width of the first groove, and the swivel bearing is located at the second groove In, and the diameter of swivel bearing is more than the width of the first groove.
CN201810209980.4A 2018-03-14 2018-03-14 A kind of combination throttle valve Pending CN108253147A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810209980.4A CN108253147A (en) 2018-03-14 2018-03-14 A kind of combination throttle valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810209980.4A CN108253147A (en) 2018-03-14 2018-03-14 A kind of combination throttle valve

Publications (1)

Publication Number Publication Date
CN108253147A true CN108253147A (en) 2018-07-06

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Family Applications (1)

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CN201810209980.4A Pending CN108253147A (en) 2018-03-14 2018-03-14 A kind of combination throttle valve

Country Status (1)

Country Link
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Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108535454A (en) * 2018-07-10 2018-09-14 北京师范大学 A kind of soil erosion test system and method
CN109114233A (en) * 2018-10-11 2019-01-01 银川特锐宝信息技术服务有限公司 A kind of liquefied natural gas pneumatic inflation connection protective device
CN109106196A (en) * 2018-09-25 2019-01-01 珠海格力电器股份有限公司 Steam valve and cooking apparatus
CN109351040A (en) * 2018-11-08 2019-02-19 王辉 A kind of rotating disc type sewage-treatment plant
CN110056687A (en) * 2019-05-04 2019-07-26 梁根如 A kind of bilateral adverse current resistance-shifting valve
CN110118275A (en) * 2019-05-04 2019-08-13 梁根如 A kind of unidirectional resistant-changing method of the bilateral of valve
CN110259969A (en) * 2019-07-19 2019-09-20 江苏永丰电器仪表有限公司 A kind of shut-off valve convenient for adjusting flux and flow direction
CN111503307A (en) * 2020-04-16 2020-08-07 天虹阀门科技（泉州）有限公司 Multifunctional valve special for drilling machine
CN111760688A (en) * 2020-07-10 2020-10-13 陈灿辉 Cyclone for ore dressing
CN112191379A (en) * 2020-09-22 2021-01-08 黄福仙 Multifunctional high-pressure cleaning machine spray head
CN112212022A (en) * 2020-10-27 2021-01-12 杨波 Gas cylinder valve
CN112358123A (en) * 2020-09-30 2021-02-12 四川春语环保科技有限公司 Multistage combined medical inspection wastewater treatment method and system
CN114508602A (en) * 2021-11-30 2022-05-17 山东大学 Precise flow regulating valve device
CN114542739A (en) * 2022-03-14 2022-05-27 安徽三马净化科技有限公司 Venturi air valve

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KR101173307B1 (en) * 2011-05-31 2012-08-17 동아대학교 산학협력단 Valve of aperture type
US20150041695A1 (en) * 2013-08-07 2015-02-12 Kyle P. Daniels Shutter valve
US20150060713A1 (en) * 2013-08-30 2015-03-05 Lumec Control Products, Inc. Valve apparatus
KR20150107470A (en) * 2014-03-14 2015-09-23 한화테크윈 주식회사 A vane apparatus
CN105351545A (en) * 2015-12-09 2016-02-24 长沙盛泓机械有限公司 Circular discharge valve used for koji production line
CN107076153A (en) * 2014-09-19 2017-08-18 阿特拉斯·科普柯空气动力股份有限公司 Inlet valve for compressor
CN107091336A (en) * 2017-06-29 2017-08-25 苏州知瑞光电材料科技有限公司 A kind of valve suitable for multiple fluid environment
CN206816911U (en) * 2017-06-21 2017-12-29 佛山格尼斯磁悬浮技术有限公司 Automatic flow control valve door
CN207975273U (en) * 2018-03-14 2018-10-16 嘉兴岱源真空科技有限公司 A kind of combination throttle valve

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Publication number Priority date Publication date Assignee Title
KR101173307B1 (en) * 2011-05-31 2012-08-17 동아대학교 산학협력단 Valve of aperture type
US20150041695A1 (en) * 2013-08-07 2015-02-12 Kyle P. Daniels Shutter valve
US20150060713A1 (en) * 2013-08-30 2015-03-05 Lumec Control Products, Inc. Valve apparatus
KR20150107470A (en) * 2014-03-14 2015-09-23 한화테크윈 주식회사 A vane apparatus
CN107076153A (en) * 2014-09-19 2017-08-18 阿特拉斯·科普柯空气动力股份有限公司 Inlet valve for compressor
CN105351545A (en) * 2015-12-09 2016-02-24 长沙盛泓机械有限公司 Circular discharge valve used for koji production line
CN206816911U (en) * 2017-06-21 2017-12-29 佛山格尼斯磁悬浮技术有限公司 Automatic flow control valve door
CN107091336A (en) * 2017-06-29 2017-08-25 苏州知瑞光电材料科技有限公司 A kind of valve suitable for multiple fluid environment
CN207975273U (en) * 2018-03-14 2018-10-16 嘉兴岱源真空科技有限公司 A kind of combination throttle valve

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108535454A (en) * 2018-07-10 2018-09-14 北京师范大学 A kind of soil erosion test system and method
CN109106196A (en) * 2018-09-25 2019-01-01 珠海格力电器股份有限公司 Steam valve and cooking apparatus
CN109114233A (en) * 2018-10-11 2019-01-01 银川特锐宝信息技术服务有限公司 A kind of liquefied natural gas pneumatic inflation connection protective device
CN109351040A (en) * 2018-11-08 2019-02-19 王辉 A kind of rotating disc type sewage-treatment plant
CN110056687A (en) * 2019-05-04 2019-07-26 梁根如 A kind of bilateral adverse current resistance-shifting valve
CN110118275A (en) * 2019-05-04 2019-08-13 梁根如 A kind of unidirectional resistant-changing method of the bilateral of valve
CN110259969B (en) * 2019-07-19 2023-12-26 江苏永丰电器仪表有限公司 Stop valve convenient to adjust flow direction
CN110259969A (en) * 2019-07-19 2019-09-20 江苏永丰电器仪表有限公司 A kind of shut-off valve convenient for adjusting flux and flow direction
CN111503307A (en) * 2020-04-16 2020-08-07 天虹阀门科技（泉州）有限公司 Multifunctional valve special for drilling machine
CN111760688A (en) * 2020-07-10 2020-10-13 陈灿辉 Cyclone for ore dressing
CN111760688B (en) * 2020-07-10 2021-10-15 吉安县学海矿业有限公司 Cyclone for ore dressing
CN112191379B (en) * 2020-09-22 2022-03-29 柳州延龙汽车有限公司 Multifunctional high-pressure cleaning machine spray head
CN112191379A (en) * 2020-09-22 2021-01-08 黄福仙 Multifunctional high-pressure cleaning machine spray head
CN112358123A (en) * 2020-09-30 2021-02-12 四川春语环保科技有限公司 Multistage combined medical inspection wastewater treatment method and system
CN112212022A (en) * 2020-10-27 2021-01-12 杨波 Gas cylinder valve
CN114508602A (en) * 2021-11-30 2022-05-17 山东大学 Precise flow regulating valve device
CN114508602B (en) * 2021-11-30 2022-09-20 山东大学 Precise flow regulating valve device
CN114542739A (en) * 2022-03-14 2022-05-27 安徽三马净化科技有限公司 Venturi air valve
CN114542739B (en) * 2022-03-14 2024-04-16 安徽三马净化科技有限公司 Venturi air valve

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