CN1470788A - Conical-core rotary multi-ported valve - Google Patents
Conical-core rotary multi-ported valve Download PDFInfo
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- CN1470788A CN1470788A CNA031387012A CN03138701A CN1470788A CN 1470788 A CN1470788 A CN 1470788A CN A031387012 A CNA031387012 A CN A031387012A CN 03138701 A CN03138701 A CN 03138701A CN 1470788 A CN1470788 A CN 1470788A
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- main valve
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Abstract
The invented valve comprises columnar main valve body, the bottom cap of the main valve body, the liquid tube in the main valve body, cone-column shaped valve core connected to the cavity of the communicating tube, the valve bush and the drive components for rotating the valve core. The feed liquor tube or the out liquor tube is setup on the bottom cap. The columned cavity of the valve core is connected to the said feed liquor tube or the out liquor tube and the cavity of the communicating tube. The liquor tubes on the main valve body are setup on two paralleled planes at least. The invented valve can realize multiple channel or multi way switching, and can replace cams and crankshafts in engines for realizing air in/out.
Description
Technical field
The invention belongs to multiple-way valve and selector valve, is the rotary multiple-way valve of a kind of awl core specifically.
Technical background
At present, existing multiple-way valve and selector valve all adopt the column type straight line motion to commutate.Its operating principle: at first, drag the big four selector valve then, can realize the air conditioner cold-warm commutation function by electromagnetic priority valve work (promptly being commonly called as little four-way change-over valve action).Processing technology complexity such as this valve body welding, component many (about 50), the processing technology difficulty is big, and parts such as valve bowl are easy to wear, cause the sealability variation, and the cost of production height, and volume is big.Chinese patent discloses " a kind of awl core rotary type four-way selector valve " (patent No.: ZL01268889.4), its technological scheme is: a kind of awl core rotary type four-way selector valve, comprise main valve body and valve gap, advancing on the main valve body, drain pipe and two commutation liquid pipes, pilot valve, the pilot valve coil, the pilot valve capillary tube, movable part commutates in the main valve body by pilot valve control, it is characterized in that described main valve body is a round barrel shape, the conical cavity that its inner chamber diminishes for diameter from top to bottom, the commutation movable part is the identical awl cylindrical valve spool with the main valve body cavity shape of a profile in the main valve body, offer three at spool middle part sidewall and pass to the pipeline that the center of circle becomes the Y type, sidewall is offered the U-shaped chamber that is communicated with three external port in Y-piece road at the spool middle part, on relative another sidewall middle part of spool, U-shaped chamber, offer the semilune chamber, advance, drain pipe and two commutation liquid pipes are arranged on the main valve body circular side wall, and four pilot valve capillary tubies are received main valve body respectively and advanced, the main valve of drain pipe and corresponding spool end face re-entrant portion covers.Its advantage is: the valve body component are few, and compact structure has saved complicated processing technologys such as welding, and processing and assembling is simple, and manufacturing efficiency improves the cost reduction.But its structure still is a four-way valve, current also do not have the above transform type multiple-way valve of four-way or lead to selector valve more, realize that more multichannel conversion or commutation need plural four-way valve series connection, complex structure, poor synchronization, the cost height can not satisfy the special requirement of fields such as multichannel fuel feeding, heating system to multiplex.
The present inlet and outlet of motor car engine are all adopted main crankshaft to drive cam crank and are realized inlet and outlet, its complex structure, and power consumption is big, the cost height.But this method has not still changed since motor comes out so far, utilizes existing four-way valve can not substitute cam crank and realizes accurately inlet and outlet.
Summary of the invention
The present invention be directed to the deficiencies in the prior art, and provide a kind of awl core rotary multiple-way valve, its valve body structure is reasonable, compact, is convenient to realize many logical or multi-way reversings, can also substitute the motor car engine cam crank and realize inlet and outlet, and is of many uses.
Technological scheme of the present invention is: the rotary multiple-way valve of a kind of awl core, comprise liquid pipe on round barrel shape main valve body, main valve bottom, the main valve body, have the awl cylindrical valve spool, valve bush, the spool rotary transmission part that are communicated with the liquid tube cavity, it is characterized in that described main valve bottom is provided with liquid inlet pipe or drain pipe, the inner chamber that is provided with in the middle of the awl cylindrical valve spool respectively with the main valve bottom on liquid inlet pipe or drain pipe and sidewall thereof on connect fluid-through tube inner chamber communicate.
Inner chamber in the middle of the described awl cylindrical valve spool is the cylindrical orthogonal cavity along the connection main valve bottom liquid inlet pipe of spool axle center setting, vertical cavity is communicated with the horizontal tube chamber of the in-line on the sidewall, and the horizontal tube chamber external port of in-line can be communicated with any main valve body fluid pipe.
Inner chamber in the middle of the described awl cylindrical valve spool is the cylindrical orthogonal cavity along the connection main valve bottom liquid inlet pipe of spool axle center setting, the horizontal tube chamber intermediate connection of Y shape on cylindrical orthogonal cavity and the spool sidewall, three external port of the horizontal tube chamber of Y shape can be communicated with three main valve body fluid pipes.
Inner chamber in the middle of the described awl cylindrical valve spool is the cylindrical orthogonal cavity along the connection main valve bottom liquid inlet pipe of spool axle center setting, inner chamber on the sidewall is the horizontal tube chamber of in-line that two-port can be communicated with arbitrarily relative two liquid pipes on the main valve body, be communicated with vertical cavity in the middle of the horizontal tube chamber of in-line, on the awl cylindrical valve spool sidewall of in-line tube chamber both sides, respectively be provided with one and connect the semilune breach that can be communicated with adjacent liquid pipe.
The horizontal tube chamber corresponding with the liquid pipe is divided into two-layer setting at least on liquid pipe on the described main valve body and the awl cylindrical valve spool.
Inner chamber in the middle of the described awl cylindrical valve spool is the stepped vertical tube chamber of more piece along the connection main valve bottom liquid inlet pipe of spool axle center setting, the vertical tube chamber of corresponding every joint is provided with the sector notch that is communicated with it on awl cylindrical valve spool sidewall, the projection of sector notch differs several angle up and down, each sector notch can with the corresponding connection of a liquid pipe on the main valve body.
The upwardly extending one section rotating shaft in described awl cylindrical valve spool top is stretched out from valve body and valve bush end face, the rotating shaft extending port of valve body end face is an inner thread mouth, and match with the sleeve pipe outside thread of kink in rotating shaft, one thrust bearing is housed on the valve core shaft in valve body, the valve core shaft upper end of stretching out valve body be equipped with one can with motor main crankshaft actuation gear meshed gears.
Described valve bush is the graphite die cast.
One confined bed is arranged in the middle of in the described main valve body cavity, spool is enclosed in the bottom, the cylinder moving up and down that one sidewall has spiral chute and vertical groove is set in the tube chamber at an upper portion thereof, the cylinder upper end is connected with a two-way piston, the upwardly extending column of spool end face stretches out from confined bed, in the spiral chute or vertical groove on the pin insertion cylinder side wall of its upper end, the sidewall on valve body top inserts a latch and passes vertical groove or spiral chute on the cylinder side wall, and two commutation capillary tubies of pilot valve feed respectively in the cavity of upper part of the main valve body bidirectional piston upper and lower.
The present invention compared with prior art has many advantages and good effect:
1, liquid inlet pipe of the present invention is arranged on the main valve bottom, and the inner chamber that is provided with in the middle of the awl cylindrical valve spool respectively with the main valve bottom on liquid inlet pipe and sidewall on connect fluid-through tube inner chamber communicate.In addition, the horizontal tube chamber corresponding with the liquid pipe is divided into two-layer setting at least on liquid pipe on the main valve body and awl cylindrical valve spool.Like this, drain pipe on the main valve body sidewall and commutation liquid pipe can be provided with more, realize how logical a valve is, and satisfy the purpose of main valve body compact structure, the special requirement in applicable some field.
2, the upwardly extending one section rotating shaft in awl cylindrical valve spool top of the present invention is stretched out from valve body and valve bush end face, the rotating shaft extending port of valve body end face is an inner thread mouth, and match with the sleeve pipe outside thread of kink in rotating shaft, one thrust bearing is housed on the valve core shaft in valve body, the valve core shaft upper end of stretching out valve body be equipped with one can with motor main crankshaft actuation gear meshed gears.Valve of the present invention can substitute the motor car engine cam crank and realize inlet and outlet, the engine breathing cam can be saved like this, makes the motor manufacturing simple, and cost reduces, and inlet and outlet can guarantee that synchronism is good, and uses reliable.
3, the present invention is enclosed within the sealing valve bush of awl cylindrical valve spool outside, and its cavity shape is identical with awl cylindrical valve spool shape, can adopt teflon or graphite die casting to form, because of it has certain elasticity, like this, lower to the body cavity requirement on machining accuracy, as long as be processed into cylindrical.The valve bush good airproof performance of graphite die casting, resistance to high temperature is good, is used for substituting the motor car engine cam crank and realizes in the inlet and outlet valve originally.
4, spool operating movement distance of the present invention is little, only turns an angle and can play the commutation effect, and the power of valve body is big more, can embody the little advantage of its volume more, and is highly sensitive, good reliability.
5, more less than existing valve volume because of valve volume of the present invention for high-power valve, close to the small-power valve, need not change the air conditioner internal structure and all can install and use easily, be convenient on air conditioner, apply.
6, valve body structure of the present invention is various from now on liquid multiple-way valves, the developing direction of logical selector valve how, and application surface is extensive, belongs to the innovative technology of update.
Description of drawings
Fig. 1 bores core rotary seven logical selector valve cut-away views for the present invention;
Fig. 2 leads to selector valve radial section figure for the awl core rotary seven of two liquid pipes simultaneously for the present invention;
Fig. 3 supplies the rotary multiple-way valve radial section figure that do not commutate of awl core of three liquid pipes simultaneously for the present invention;
Fig. 4 supplies the rotary multiple-way valve radial section of the awl core figure of a liquid pipe simultaneously for the present invention;
Fig. 5 advances (row) air valve cut-away view for six cylinders that the present invention is used for motor car engine;
Fig. 6 is the plan view of spool among Fig. 5;
Fig. 7 is that A-A among Fig. 6 is to sectional drawing;
Fig. 8 is that B-B among Fig. 6 is to sectional drawing.
Embodiment
Referring to Fig. 1, a kind of awl core rotary seven logical selector valves, middle in main valve body 6 cavitys have a confined bed 17, and up-thin-low-thick awl cylindrical valve spool 3 is enclosed in the bottom.Described main valve body bottom 2 is installed in main valve body 6 below ports, is connected with main valve body 6 below port internal threads by its outside thread, between bottom 1 and spool 3 butterfly spring sheet 2 is set.At main valve bottom 1 the cylindrical orthogonal tube chamber of the connection main valve bottom liquid inlet pipes 19 that are provided with along the axle center in the middle of a main liquid inlet pipe 20 cylindrical valve spool 3 is set, vertical tube chamber is communicated with liquid pipe 19 on main valve body 6 sidewalls by the horizontal in-line tube chamber on awl cylindrical valve spool 3 sidewalls.
The barrel-shaped seal valve lining 4 of the inversion that also has a teflon to make in main valve body 6 lower cavity is enclosed within the outside of awl cylindrical valve spool 3, covers spool 3 end faces and sidewall, and between sealing valve bush 4 and awl cylindrical valve spool 3 end faces a pad 5 is set.Sealing valve bush 4 inner chambers are the awl cylindrical cavity identical with spool 3 profiles, and its sidewall and end face have the hole that penetrates of main valve body fluid pipe 19 and spool column 18.In valve pipe 7 chambeies on confined bed 17 tops the cylinder moving up and down 10 that a sidewall has spiral chute and vertical groove is set, the bidirectional piston bowl 13 that cylinder 10 upper ends and a teflon are made is connected as a single entity by screw 12, packing ring 15 and piston tray 11.Upwardly extending column 18 stretches out from confined bed 17 in the middle of spool 3 end faces, and in two spiral chutes that the horizontal pin 8 that install its upper end inserts on cylinders 10 sidewalls, the sidewall on main valve body 6 tops inserts a latch 9 and passes two vertical groove on cylinder 10 sidewalls.Described main valve top cover 14 is installed in main valve body 6 the tops, a commutation capillary tube of pilot valve 16 feeds in the cavity of bidirectional piston bowl 13 tops, main valve body 6 top from main valve top cover 14, and another root commutation capillary tube of pilot valve 16 feeds in the cavity of bidirectional piston bowl 13 belows from main valve body 6 upper portion side wall.By different spiral fluted angle of swing are set, to be suitable for the needs of various multidirectional selector valves.
Referring to Fig. 2, for supplying two liquid Guan Qitong selector valves simultaneously, among the figure, the inner chamber that described awl cylindrical valve spool is 3 is the cylindricality vertical cavity along the connection main valve bottom liquid inlet pipe 20 of spool axle center setting, inner chamber on the sidewall is the horizontal tube chamber of in-line that two-port can be communicated with arbitrarily relative two liquid pipes 19 on the main valve body 6, be communicated with vertical cavity in the middle of the horizontal tube chamber of in-line, on the awl cylindrical valve spool sidewall of in-line tube chamber both sides, respectively be provided with one and connect the semilune breach that can be communicated with adjacent liquid pipe.When spool with C1, when C2 communicates, the direction of flow operation point, worked the back flow back to by S1, S2, enter E1, E2 by semilune breach inner chamber and outwards flow out in the fluid pool, squeeze in the working room by pump body compression again.After turning an angle, compressed fluid flows into reversing mechanism by pump (compressor) by S1, S2, and work is over and flows into spool by C1, C2, carries in the pond by E1, E2 incoming fluid again, makes equipment work reverse.
Referring to Fig. 3, inner chamber in the middle of the described awl cylindrical valve spool 3 is the cylindrical orthogonal cavity along the connection main valve bottom liquid inlet pipe 20 of spool axle center setting, the horizontal tube chamber intermediate connection of Y shape on cylindrical orthogonal cavity and the spool 3, three external port of the horizontal tube chamber of Y shape can be communicated with three main valve body fluid pipes 19.Among the figure, communicate with K1, K2, K3 earlier, turn an angle, communicate with H1, H2, H3 again.The moving several angle of revolution is formed one group of multiple-way valve.
Referring to Fig. 4, a kind of seven logical valves, inner chamber in the middle of the awl cylindrical valve spool 3 is the cylindrical orthogonal cavity along liquid inlet pipe 20 on the connection main valve bottom 1 of spool axle center setting, vertical cavity is communicated with the horizontal tube chamber of the in-line on the sidewall, and the horizontal tube chamber external port of in-line can be communicated with any main valve body fluid pipe 19 (C1, C2, C3, C4, C5, C6).The moving several angle of awl cylindrical valve spool 3 revolutions, the pipeline connection of a direction of formation is to be communicated with C1 liquid pipe among Fig. 4.
Referring to Fig. 5-Fig. 8, a kind of six cylinders that are used for motor car engine advance (row) air valve, mainly are made up of the liquid pipe 19 on round barrel shape main valve body 4, main valve bottom 1, the main valve body, the awl cylindrical valve spool 3 with company's fluid-through tube 19 inner chambers, valve bush 4, the spool rotary transmission part that graphite is cast into.Main valve body bottom 1 is installed in main valve body 6 below ports, is connected with main valve body 6 below port internal threads by its outside thread, between bottom 1 and spool 3 butterfly spring sheet 2 is set.In the middle of the described main valve bottom 1 main liquid inlet pipe 20 is set, the stepped vertical tube chamber lower end mouth of 6 joints that spool 3 axle center are provided with is communicated with the liquid inlet pipe 20 on the main valve bottom 1.The vertical tube chamber of corresponding every joint is provided with the sector notch that is communicated with it on awl cylindrical valve spool 3 sidewalls, and sector notch outer rim circular arc is 230 °-290 °, and the projection of neighbouring sector notch all differs 60 °.Six roots of sensation liquid pipe 19 is arranged on main valve body 6 sidewalls, be divided into six layers of setting, the shaft axis projection of upper and lower layers liquid pipe 19 overlaps consistent.Have liquid pipe 19 intercommunicating pores on the sidewall of main valve body 6 and valve bush 4 corresponding every liquid pipes 19.Awl cylindrical valve spool 3 each sector notch can with a corresponding liquid pipe 19 connections on the main valve body 6.Solid arrow is represented the flow direction of air inlet connection among Fig. 5, and dotted arrow is represented the flow direction of exhaust connection.
The upwardly extending one section rotating shaft 24 in described awl cylindrical valve spool 3 tops is stretched out from valve body 6 and valve bush 4 end faces, the rotating shaft extending port of valve body 6 end faces is an inner thread mouth, and match with sleeve pipe 22 outside threads of kink in rotating shaft 24, one thrust bearing 21 is housed on the valve core shaft 24 in valve body 6, valve core shaft 24 upper ends of stretching out valve body 6 be equipped with one can with motor main crankshaft actuation gear meshed gears 23, and fixing by pivot pin 25.By the sleeve pipe 22 of kink in the rotating shaft 24 and relatively rotating of valve body 6, withstand on the thrust bearing 21 by sleeve pipe 22 lower ends, acting in conjunction by the butterfly spring sheet 2 under thrust bearing 21 and the spool 3, can regulation valve body 6 inner spools 3 and the tightness of 4 of valve bushes suitable, make good seal performance, and spool 3 can be not stuck, regulates easily.
Multiple-way valve of the present invention can be applicable to fuel feeding, heating system, can supply certain several pipeline simultaneously, after turning an angle, can supply certain several pipeline in addition simultaneously.
Many logical selector valves of the present invention can be applicable to that hydraulic pressure advances back in the multifunction machine; Advance, return hydraulic oil in the multi-functional mechanical; Commutation in the air conditioner etc.
Claims (10)
1, the rotary multiple-way valve of a kind of awl core, comprise liquid pipe on round barrel shape main valve body, main valve bottom, the main valve body, have the awl cylindrical valve spool, valve bush, the spool rotary transmission part that are communicated with the liquid tube cavity, it is characterized in that described main valve bottom is provided with liquid inlet pipe or drain pipe, the inner chamber that is provided with in the middle of the awl cylindrical valve spool respectively with the main valve bottom on liquid inlet pipe or drain pipe and sidewall thereof on connect fluid-through tube inner chamber communicate.
2, according to the rotary multiple-way valve of the described awl core of claim 1, it is characterized in that the middle inner chamber of described awl cylindrical valve spool is the cylindrical orthogonal cavity along the connection main valve bottom liquid inlet pipe of spool axle center setting, vertical cavity is communicated with the horizontal tube chamber of the in-line on the sidewall, and the horizontal tube chamber external port of in-line can be communicated with any main valve body fluid pipe.
3, according to the rotary multiple-way valve of the described awl core of claim 1, it is characterized in that the middle inner chamber of described awl cylindrical valve spool is the cylindrical orthogonal cavity along the connection main valve bottom liquid inlet pipe of spool axle center setting, the horizontal tube chamber intermediate connection of Y shape on cylindrical orthogonal cavity and the spool sidewall, three external port of the horizontal tube chamber of Y shape can be communicated with three main valve body fluid pipes.
4, according to the rotary multiple-way valve of the described awl core of claim 1, it is characterized in that the middle inner chamber of described awl cylindrical valve spool is the cylindrical orthogonal cavity along the connection main valve bottom liquid inlet pipe of spool axle center setting, inner chamber on the sidewall is the horizontal tube chamber of in-line that two-port can be communicated with arbitrarily relative two liquid pipes on the main valve body, be communicated with vertical cavity in the middle of the horizontal tube chamber of in-line, on the awl cylindrical valve spool sidewall of in-line tube chamber both sides, respectively be provided with one and connect the semilune breach that can be communicated with adjacent liquid pipe.
5, according to the rotary multiple-way valve of the described awl core of the arbitrary claim of claim 1-4, it is characterized in that on the described main valve body the liquid pipe and the awl cylindrical valve spool on the horizontal tube chamber corresponding with the liquid pipe be divided into two-layer setting at least.
6, according to the rotary multiple-way valve of the described awl core of claim 5, it is characterized in that the middle inner chamber of described awl cylindrical valve spool is the stepped vertical tube chamber of more piece along the connection main valve bottom liquid inlet pipe of spool axle center setting, the vertical tube chamber of corresponding every joint is provided with the sector notch that is communicated with it on awl cylindrical valve spool sidewall, the projection of sector notch differs several angle up and down, each sector notch can with the corresponding connection of a liquid pipe on the main valve body.
7, according to the rotary multiple-way valve of the described awl core of claim 1, it is characterized in that the upwardly extending one section rotating shaft in described awl cylindrical valve spool top stretches out from valve body and valve bush end face, the rotating shaft extending port of valve body end face is an inner thread mouth, and match with the sleeve pipe outside thread of kink in rotating shaft, one thrust bearing is housed on the valve core shaft in valve body, the valve core shaft upper end of stretching out valve body be equipped with one can with motor main crankshaft actuation gear meshed gears.
8, according to the rotary multiple-way valve of the described awl core of claim 6, it is characterized in that the upwardly extending one section rotating shaft in described awl cylindrical valve spool top stretches out from valve body and valve bush end face, the rotating shaft extending port of valve body end face is an inner thread mouth, and match with the sleeve pipe outside thread of kink in rotating shaft, one thrust bearing is housed on the valve core shaft in valve body, the valve core shaft upper end of stretching out valve body be equipped with one can with motor main crankshaft actuation gear meshed gears.
9,, it is characterized in that described valve bush is the graphite die cast according to the rotary multiple-way valve of the described awl core of claim 8.
10, according to the rotary multiple-way valve of the described awl core of the arbitrary claim of claim 1-4, in the middle of it is characterized in that in the described main valve body cavity confined bed is arranged, spool is enclosed in the bottom, the cylinder moving up and down that one sidewall has spiral chute and vertical groove is set in the tube chamber at an upper portion thereof, the cylinder upper end is connected with a two-way piston, the upwardly extending column of spool end face stretches out from confined bed, in the spiral chute or vertical groove on the pin insertion cylinder side wall of its upper end, the sidewall on valve body top inserts a latch and passes vertical groove or spiral chute on the cylinder side wall, and two commutation capillary tubies of pilot valve feed respectively in the cavity of upper part of the main valve body bidirectional piston upper and lower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03138701 CN1262777C (en) | 2003-06-22 | 2003-06-22 | Conical-core rotary multi-ported valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03138701 CN1262777C (en) | 2003-06-22 | 2003-06-22 | Conical-core rotary multi-ported valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1470788A true CN1470788A (en) | 2004-01-28 |
| CN1262777C CN1262777C (en) | 2006-07-05 |
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ID=34154856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03138701 Expired - Fee Related CN1262777C (en) | 2003-06-22 | 2003-06-22 | Conical-core rotary multi-ported valve |
Country Status (1)
| Country | Link |
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| CN (1) | CN1262777C (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102401153A (en) * | 2011-07-05 | 2012-04-04 | 北京中电联环保工程有限公司 | Rotary combined valve group and reactor applying same |
| CN102966763A (en) * | 2012-12-06 | 2013-03-13 | 银川东方运输设备有限公司 | Rotary four-way fluid reversing valve with two spiral grooves |
| CN105333179A (en) * | 2015-12-16 | 2016-02-17 | 江苏南方雄狮建设工程有限公司 | Cold and hot switching type water mixing valve |
| CN106195340A (en) * | 2016-08-31 | 2016-12-07 | 上海交通大学 | Double helix static seal four-way change-over valve |
| CN107413403A (en) * | 2017-02-04 | 2017-12-01 | 青岛大学 | Constant temperature sample introduction thermal insulation converging device |
| CN108799560A (en) * | 2018-07-27 | 2018-11-13 | 中国电力工程顾问集团西北电力设计院有限公司 | A kind of blocking valve with vapour vertical shaft |
| CN112499553A (en) * | 2020-10-22 | 2021-03-16 | 王川 | Canning equipment for liquid food packaging |
| CN114180735A (en) * | 2021-11-18 | 2022-03-15 | 北京卫星制造厂有限公司 | Portable water treatment device |
-
2003
- 2003-06-22 CN CN 03138701 patent/CN1262777C/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102401153A (en) * | 2011-07-05 | 2012-04-04 | 北京中电联环保工程有限公司 | Rotary combined valve group and reactor applying same |
| CN102966763A (en) * | 2012-12-06 | 2013-03-13 | 银川东方运输设备有限公司 | Rotary four-way fluid reversing valve with two spiral grooves |
| CN102966763B (en) * | 2012-12-06 | 2015-04-15 | 银川东方气力运输设备有限公司 | Rotary four-way fluid reversing valve with two spiral grooves |
| CN105333179A (en) * | 2015-12-16 | 2016-02-17 | 江苏南方雄狮建设工程有限公司 | Cold and hot switching type water mixing valve |
| CN106195340A (en) * | 2016-08-31 | 2016-12-07 | 上海交通大学 | Double helix static seal four-way change-over valve |
| CN107413403B (en) * | 2017-02-04 | 2019-11-29 | 青岛大学 | Constant temperature sample introduction is insulated converging device |
| CN107413403A (en) * | 2017-02-04 | 2017-12-01 | 青岛大学 | Constant temperature sample introduction thermal insulation converging device |
| CN108799560A (en) * | 2018-07-27 | 2018-11-13 | 中国电力工程顾问集团西北电力设计院有限公司 | A kind of blocking valve with vapour vertical shaft |
| CN108799560B (en) * | 2018-07-27 | 2023-11-03 | 中国电力工程顾问集团西北电力设计院有限公司 | Blocking valve of steam distribution vertical shaft |
| CN112499553A (en) * | 2020-10-22 | 2021-03-16 | 王川 | Canning equipment for liquid food packaging |
| CN112499553B (en) * | 2020-10-22 | 2022-04-26 | 四川省成都红灯笼食品有限公司 | Canning equipment for liquid food packaging |
| CN114180735A (en) * | 2021-11-18 | 2022-03-15 | 北京卫星制造厂有限公司 | Portable water treatment device |
| WO2023087841A1 (en) * | 2021-11-18 | 2023-05-25 | 北京卫星制造厂有限公司 | Portable water treatment device |
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| Publication number | Publication date |
|---|---|
| CN1262777C (en) | 2006-07-05 |
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Granted publication date: 20060705 |