CN106015150A - Two-position four-way turntable type reversing valve - Google Patents
Two-position four-way turntable type reversing valve Download PDFInfo
- Publication number
- CN106015150A CN106015150A CN201610652637.8A CN201610652637A CN106015150A CN 106015150 A CN106015150 A CN 106015150A CN 201610652637 A CN201610652637 A CN 201610652637A CN 106015150 A CN106015150 A CN 106015150A
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- Prior art keywords
- valve body
- hydraulic fluid
- fluid port
- groove
- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/021—Valves for interconnecting the fluid chambers of an actuator
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- 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
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- 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
- F16K3/04—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 pivoted closure members
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- 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
- F16K3/30—Details
- F16K3/314—Forms or constructions of slides; Attachment of the slide to the spindle
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Multiple-Way Valves (AREA)
Abstract
The invention provides a two-position four-way turntable type reversing valve and belongs to the field of hydraulic driving. A main structure comprises an upper valve body, a valve plate and a lower valve body, wherein the upper valve body and the lower valve body are connected through a bolt and a nut to form a whole and are fixed to a base. The valve plate is installed in a cavity formed by the upper valve body and the lower valve body, a driving shaft of the valve plate extends out of the upper valve body, and the valve plate is driven to rotate by external power. The upper valve body is provided with an oil port C and an oil port D, and the lower valve body is provided with an oil port A and an oil port B. During rotation of the valve plate, communication between the oil port A and the oil port C and communication between the oil port B and the oil port D are achieved in a front semi-cycle, and communication between the oil port A and the oil port D and communication between the oil port B and the oil port C are achieved in a rear semi-cycle. The valve plate constantly rotates to achieve a working mode of the two-position four-way reversing valve. The two-position four-way turntable type reversing valve breaks the working mode that a valve element performs reciprocating motion for reversing of a traditional two-position four-way magnetic reversing valve, has the advantages of being compact in structure, easy to machine, stable in work and operation, small in noise and the like, meets the application demand and is wide in industrialized prospect.
Description
Technical field
The invention belongs to hydraulic drive field, be specifically related to a kind of two-position four-way rotating disc type reversal valve.
Background technology
Hydraulic drive application in modern industry is extremely wide, and switch valve is a kind of important control valve in hydraulic system,
The quality of its service behaviour has highly important impact to whole hydraulic system.The two-position four-way that hydraulic system is commonly used at present is opened
Closing valve is slide-valve structure mostly, valve body has four hydraulic fluid ports: hydraulic fluid port A, hydraulic fluid port B, hydraulic fluid port C, hydraulic fluid port D.Spool has two
Station, one of them station makes hydraulic fluid port A connect with hydraulic fluid port C, hydraulic fluid port B connects with hydraulic fluid port D, another station make hydraulic fluid port A with
Hydraulic fluid port D connection, hydraulic fluid port B connect with hydraulic fluid port C.So can realize the leaning out and reclaiming of piston rod of the right cylinder of double acting hydraulic
Control, or hydraulic motor forward and reverse.But because valve body and valve core structure are complex-shaped, quality of fit requires height, thus leads
Cause process for machining and manufacturing cost height, seal the problems such as difficult, loosely organized, simultaneously because valve core moves back and forth relative to valve body,
Inertia is relatively big, and switching frequency is difficult to improve, and impulsive force is big, work noise is big, reliability is low.
Summary of the invention
It is an object of the invention to overcome that tradition two-position four-way switch valve structure is complicated, processing and manufacturing difficulty, seal difficulty,
High in cost of production problem, seeks a kind of compact conformation, easily seals, the switch valve that work noise is little.In order to realize above-mentioned functions,
The present invention designs a kind of two four-way rotating disc type reversal valves, and spool is disc-shaped, and external force drives it to rotate, in rotation process, up and down
Arcuate groove on end face is at two stations corresponding to front half cycle, second half, and station makes hydraulic fluid port A connect with hydraulic fluid port C, hydraulic fluid port
B connects with hydraulic fluid port D, and another station makes hydraulic fluid port A connect with hydraulic fluid port D, hydraulic fluid port B connects with hydraulic fluid port C.The present invention and other
Two four-way cock valves are compared, and prominent feature is that anufacturability is good, additionally have simple and compact for structure, reliability is high, work
The advantages such as working frequency is high, be prone to seal and noise is little, can be widely applied in the hydraulic system of speed-sensitive switch, high speed exciting.
In order to realize foregoing invention purpose, the agent structure of the present invention includes upper valve body, valve disc, lower valve body, upper valve body with
Lower valve body connects as one and is fixed on pedestal.Upper valve body forms plate-like cavity with lower valve inner, is used for accommodating valve disc, valve disc
Coordinate for small-gap suture with between upper valve body, lower valve body, can be around axis flexible rotating.
Described upper valve body is seen the most disc-shaped from the outside, inside has cylindrical cavity, upper surface to have hydraulic fluid port C and hydraulic fluid port D two
Individual liquid stream mouth, comes in and goes out for fluid；Upper surface shaft core position has turret apertures, and the rotating shaft of valve disc leans out from turret apertures；Upper valve body
Lower surface opening is relative with the opening of lower valve body upper surface, and periphery has adpting flange, and flange has multiple hole.
Described lower valve body is seen the most disc-shaped from the outside, inside has cylindrical cavity, lower surface to have hydraulic fluid port A and hydraulic fluid port B two
Individual liquid stream mouth, comes in and goes out for fluid；Lower valve body upper surface is that opening is corresponding with the opening of upper valve body lower surface, and periphery has connection
Flange, flange has multiple hole, corresponding with the hole on the adpting flange of upper valve body lower surface, can be by upper by bolts and nuts
Valve body couples together with lower valve body.
Certainly upper valve body and lower valve body can have multiple connected mode, and its external shape also determines depending on concrete application scenario.
The upper and lower both ends of the surface of described valve disc all have the symmetrical arc groove of relative axis, outer arcuate groove, the offered arc in upper surface
Shape groove is arc shaped groove, upper left arc groove, the offered arcuate groove in lower surface outside upper right arc groove, upper right outer arcuate groove, upper left
For bottom right outer arcuate groove, bottom right arc groove, lower-left arc groove, lower-left outer arcuate groove.The radial position of upper valve body hydraulic fluid port C
Radial position with valve disc upper surface outer arcuate groove is identical, the radial position of upper valve body hydraulic fluid port D and valve disc upper surface arc groove
Radial position is identical, and two hydraulic fluid ports are on same half warp of cylindrical cavity；The radial position of lower valve body hydraulic fluid port A and valve disc lower end
The radial position of face outer arcuate groove is identical, the radial position of lower valve body hydraulic fluid port B and the radial position phase of valve disc lower surface arc groove
With, circumferential position is identical with hydraulic fluid port C, hydraulic fluid port D, i.e. in terms of end face of the present invention, and hydraulic fluid port C, hydraulic fluid port D, hydraulic fluid port A, hydraulic fluid port B
The same being projected in cylindrical cavity half through upper.
Described valve disc institute open arc shape slot cross-section shape can be rectangle, semicircle, U-shaped etc.；The central angle of all arcuate grooves is all
Less than 180 degree, the diameter more than hydraulic fluid port D of the circumferential distance between the arc groove of upper surface two, the circumference between two outer arcuate grooves
The distance diameter more than hydraulic fluid port C；The circumferential distance between the arc groove of lower surface two diameter more than hydraulic fluid port B, two outer arcuate grooves
Between circumferential distance more than the diameter of hydraulic fluid port A.
When valve disc rotates, the upper left arc groove of front half cycle upper and lower end face, lower-left arc groove are interconnected mutually by oil circuit therebetween
Logical, outside upper left, arc shaped groove, lower-left outer arcuate groove are interconnected by oil circuit therebetween；The upper right outer arcuate groove of second half upper and lower end face
Being interconnected by oil circuit therebetween with the bottom right arc groove of lower surface, upper right arc groove and bottom right outer arcuate groove are by oil therebetween
Road is interconnected；Seal groove can be set inside and outside upper and lower end face between arcuate groove, be used for accommodating sealing ring, stop inside and outside arcuate groove it
Between the internal leak of fluid.
The drive shaft of valve disc for external impetus drive valve disc rotate, type of drive can manually, electrically, surge.
When the present invention works external impetus by drive shaft drive valve disc be rotated about axis, when before valve disc the arcuate groove of half cycle with
Upper valve body, lower valve body hydraulic fluid port connection time, arc shaped groove upper left outside, lower-left outer arcuate groove and between oil circuit by hydraulic fluid port A with oily
Mouthful C connection, upper left arc groove, lower-left arc groove and between oil circuit hydraulic fluid port B is connected with hydraulic fluid port D；Along with valve disc
Rotation, when hydraulic fluid port C, hydraulic fluid port D are respectively between upper surface two outer arcuate groove, two arc grooves, hydraulic fluid port A, hydraulic fluid port B are respectively
Time between lower surface two outer arcuate groove, two arc grooves, the inside connection between all hydraulic fluid ports is all turned off, and the present invention is in
Cut-off state；Along with the rotation of valve disc, when arcuate groove and the upper valve body of valve disc second half, the hydraulic fluid port of lower valve body connect, upper right
Outer arcuate groove, bottom right arc groove and between oil circuit hydraulic fluid port C is connected with hydraulic fluid port B, upper right arc groove, bottom right outer arc
Shape groove and between oil circuit hydraulic fluid port D is connected with hydraulic fluid port A；Valve disc constantly rotates, and said process is the most repeatedly, it is achieved two
The mode of operation of four-way change-over valve, cut-off state that the most relatively conventional two-position four way change valve is many.
Present invention achieves the commutation function of two-position four way change valve, working media can also be other liquid such as water, air,
Have compact conformation, to be prone to feature, application demand and the industrialization prospects such as processing, work smooth running, noise be little wide.
Accompanying drawing explanation
Fig. 1 is partial sectional view of the present invention；
Fig. 2 is the top view of valve disc of the present invention；
Fig. 3 is the axis side view such as grade of valve disc of the present invention；
Fig. 4 is the outline drawing of upper valve body of the present invention；
Fig. 5 is the outline drawing of valve body under the present invention.
Reference: 1-upper valve body；2-valve disc；3-sealing ring；4-bolt；5-nut；Valve body under 6-；7-hydraulic fluid port A；
8-hydraulic fluid port B；9-hydraulic fluid port C；10-hydraulic fluid port D；11-upper right arc groove；12-upper right outer arcuate groove；13-bottom right outer arcuate groove；
14-bottom right arc groove；15-lower-left arc groove；16-lower-left outer arcuate groove；Arc shaped groove outside 17-upper left；18-upper left arc
Groove
Detailed description of the invention
Below by specific embodiment, and combine accompanying drawing and be described further.
During the present invention implements, agent structure includes upper valve body 1, valve disc 2, lower valve body 6, and upper valve body 1 is with lower valve body 6 even
Connect to be integrated and be fixed on pedestal.Upper valve body 1 and lower valve body 6 are internally formed plate-like cavity, are used for accommodating valve disc 2, valve disc 2
Coordinate for small-gap suture with between upper valve body 1, lower valve body 6, can be around axis flexible rotating.
Described upper valve body 1 is seen the most disc-shaped from the outside, inside has cylindrical cavity, upper surface to have hydraulic fluid port C9 and hydraulic fluid port
Two liquid stream mouths of D10, come in and go out for fluid；Upper surface shaft core position has turret apertures, and the rotating shaft of valve disc 2 leans out from turret apertures；
Upper valve body 1 lower surface opening is relative with the opening of lower valve body 6 upper surface, and periphery has adpting flange, and flange has multiple hole.
Described lower valve body 6 is seen the most disc-shaped from the outside, inside has cylindrical cavity, lower surface to have hydraulic fluid port A7 and hydraulic fluid port
Two liquid stream mouths of B8, come in and go out for fluid；Lower valve body 6 upper surface is that opening is corresponding with the opening of upper valve body 1 lower surface, week
While there is adpting flange, flange has multiple hole, corresponding with the hole on the adpting flange of upper valve body 1 lower surface, by bolt 4 with
Upper valve body 1 can be coupled together by nut 5 with lower valve body 6.
Certainly upper valve body 1 and lower valve body 6 can have multiple connected mode, and its external shape also determines depending on concrete application scenario.
Described valve disc 2 upper and lower end face all has the inside and outside arcuate groove that relative axis is symmetrical, and the offered arcuate groove in upper surface is right
Arc shaped groove 17, upper left arc groove 18, the offered arc in lower surface outside upper arc groove 11, upper right outer arcuate groove 12, upper left
Groove is bottom right outer arcuate groove 13, bottom right arc groove 14, lower-left arc groove 15, lower-left outer arcuate groove 16.Upper valve body 1 oil
The radial position of mouth C9 is identical with the radial position of valve disc 2 upper surface outer arcuate groove 17,12, the radial direction of upper valve body 1 hydraulic fluid port D10
Position is identical with the radial position of valve disc 2 upper surface arc groove 18,11, and two hydraulic fluid ports are on same half warp of cylindrical cavity；
The radial position of lower valve body 6 hydraulic fluid port A7 is identical with the radial position of valve disc 2 lower surface outer arcuate groove 16,13, lower valve body hydraulic fluid port
The radial position of B8 is identical with the radial position of valve disc lower surface arc groove 15,14, circumferential position and hydraulic fluid port C9, hydraulic fluid port D10
Identical, i.e. in terms of end face of the present invention, hydraulic fluid port C9, hydraulic fluid port D10, hydraulic fluid port A7, hydraulic fluid port B8 be projected in the same of cylindrical cavity
One and half through upper.
2 open arc shape slot cross-section shapes of described valve disc can be rectangle, semicircle, U-shaped etc.；The central angle of all arcuate grooves
Both less than 180 degree, the diameter more than hydraulic fluid port D10 of the circumferential distance between the arc groove of upper surface two, between two outer arcuate grooves
The circumferential distance diameter more than hydraulic fluid port C9；The circumferential distance between the arc groove of lower surface two diameter more than hydraulic fluid port B8, outside two
The circumferential distance between the arcuate groove diameter more than hydraulic fluid port A7.
When valve disc rotates, the upper left arc groove 18 of front half cycle upper and lower end face, lower-left arc groove 15 are by oil circuit therebetween
Being interconnected, outside upper left, arc shaped groove 17, lower-left outer arcuate groove 16 are interconnected by oil circuit therebetween；Second half upper and lower end face
Upper right outer arcuate groove 12 is interconnected by oil circuit therebetween with the bottom right arc groove 14 of lower surface, and upper right arc groove 11 is with right
Lower outer arcuate groove 13 is interconnected by oil circuit therebetween；Seal groove can be set inside and outside upper and lower end face between arcuate groove, be used for accommodating close
Seal, stops the internal leak of fluid between inside and outside arcuate groove.
The drive shaft of valve disc 2 for external impetus drive valve disc 2 rotate, type of drive can manually, electrically, surge.
When the present invention works, external impetus drives valve disc 2 to be rotated about axis, when the arc of half cycle before valve disc 2 by drive shaft
When groove connects with the hydraulic fluid port of upper valve body 1, lower valve body 6, arc shaped groove 17 outside upper left, lower-left outer arcuate groove 16 and between oil circuit
Hydraulic fluid port A7 is connected with hydraulic fluid port C9, upper left arc groove 18, lower-left arc groove 15 and between oil circuit by hydraulic fluid port B8 with
Hydraulic fluid port D10 connects；Along with the rotation of valve disc 2, when hydraulic fluid port C9, hydraulic fluid port D10 are respectively at upper surface two outer arcuate groove, two inner arcs
Between shape groove, when hydraulic fluid port A7, hydraulic fluid port B8 are respectively between lower surface two outer arcuate groove, two arc grooves, between all hydraulic fluid ports
Inside connection be all turned off, the present invention is in cut-off state；Along with the rotation of valve disc 2, when the arcuate groove of valve disc 2 second half
When connecting with the hydraulic fluid port of upper valve body 1, lower valve body 6, upper right outer arcuate groove 12, bottom right arc groove 14 and between oil circuit will
Hydraulic fluid port C9 connects with hydraulic fluid port B8, upper right arc groove 11, bottom right outer arcuate groove 13 and between oil circuit by hydraulic fluid port D10 with
Hydraulic fluid port A7 connects；Valve disc 2 constantly rotates, and said process is the most repeatedly, it is achieved the mode of operation of two-position four way change valve, certainly
Cut-off state that relatively conventional two-position four way change valve is many.
Present invention achieves the commutation function of two-position four way change valve, working media can also be other liquid such as water, air,
Have compact conformation, to be prone to feature, application demand and the industrialization prospects such as processing, work smooth running, noise be little wide.
Above-described is only the preferred embodiment of the present invention, it is noted that come for those of ordinary skill in the art
Say, on the premise of the creation without departing from the present invention is conceived, it is also possible to making some deformation and improvement, these broadly fall into the present invention
Protection domain.
Claims (2)
1. a two-position four-way rotating disc type reversal valve, agent structure includes upper valve body (1), valve disc (2), lower valve body (6),
It is primarily characterized in that: upper valve body (1) and lower valve body (6) connect as one and be fixed on pedestal, upper valve body (1) and lower valve
Body (6) is internally formed plate-like cavity, is used for accommodating valve disc (2), between valve disc (2) and upper valve body (1), lower valve body (6)
Coordinate for small-gap suture；Cylindrical cavity, upper surface is had to have hydraulic fluid port C (9) and hydraulic fluid port D (10) two in described upper valve body (1)
Individual liquid stream mouth；Upper surface shaft core position has turret apertures, and the rotating shaft of valve disc (2) leans out from turret apertures；Upper valve body (1) lower surface
Opening is relative with the opening of lower valve body (6) upper surface, and periphery has adpting flange, and flange has multiple hole, described lower valve body (6)
Inside having cylindrical cavity, lower surface has hydraulic fluid port A (7) and (8) two liquid stream mouths of hydraulic fluid port B；Lower valve body (6) upper surface is
Opening is corresponding with the opening of upper valve body (1) lower surface, and periphery has adpting flange, and flange has multiple hole, with upper valve body (1)
Hole on the adpting flange of lower surface is corresponding, can be by upper valve body (1) and lower valve body (6) with nut (5) by bolt (4)
Connect；Described valve disc (2) both ends of the surface up and down all have the symmetrical arc groove of relative axis, outer arcuate groove, and upper surface is offered
Arcuate groove is arc shaped groove (17), upper left arc groove (18) outside upper right arc groove (11), upper right outer arcuate groove (12), upper left,
The offered arcuate groove in lower surface is bottom right outer arcuate groove (13), bottom right arc groove (14), lower-left arc groove (15), lower-left
Outer arcuate groove (16)；The radial position of upper valve body (1) hydraulic fluid port C (9) and valve disc (2) upper surface outer arcuate groove (17,12)
Radial position identical, the radial position of upper valve body (1) hydraulic fluid port D (10) and valve disc (2) upper surface arc groove (18,11)
Radial position identical, two hydraulic fluid ports cylindrical cavity same half through on；The radial direction position of lower valve body (6) hydraulic fluid port A (7)
Put identical with the radial position of valve disc (2) lower surface outer arcuate groove (16,13), the radial direction position of lower valve body (6) hydraulic fluid port B (8)
Put identical with the radial position of valve disc (2) lower surface arc groove (15,14), circumferential position and hydraulic fluid port C (9), hydraulic fluid port D (10)
Identical.
2. two-position four-way rotating disc type reversal valve as claimed in claim 1, it is characterised in that: described valve disc (2) institute open arc shape
Slot cross-section shape can be rectangle, semicircle, U-shaped；The central angle of all arcuate grooves is both less than 180 degree, upper surface two arc
Circumferential distance between groove (18,11) more than the diameter of hydraulic fluid port D (10), the circumference between two outer arcuate grooves (17,12) away from
From the diameter more than hydraulic fluid port C (9)；Circumferential distance between lower surface two arc groove (15,14) is straight more than hydraulic fluid port B's (8)
Footpath, the diameter more than hydraulic fluid port A (7) of the circumferential distance between two outer arcuate grooves (16,13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610652637.8A CN106015150A (en) | 2016-08-11 | 2016-08-11 | Two-position four-way turntable type reversing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610652637.8A CN106015150A (en) | 2016-08-11 | 2016-08-11 | Two-position four-way turntable type reversing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106015150A true CN106015150A (en) | 2016-10-12 |
Family
ID=57134724
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610652637.8A Pending CN106015150A (en) | 2016-08-11 | 2016-08-11 | Two-position four-way turntable type reversing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106015150A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108278235A (en) * | 2018-01-18 | 2018-07-13 | 广东机电职业技术学院 | A kind of hydraulic volume limits device with hydraulic control positioning |
| CN112432043A (en) * | 2020-11-13 | 2021-03-02 | 贵州电网有限责任公司 | Electrical equipment mechanical jam-proof device |
| CN113600888A (en) * | 2021-08-20 | 2021-11-05 | 常州市科怡机械有限公司 | End face milling cutter head |
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| US4181067A (en) * | 1977-02-17 | 1980-01-01 | Riva Calzoni S.P.A. | Distributor for hydraulic motors |
| US6058974A (en) * | 1996-07-04 | 2000-05-09 | Blomgren; Ralf | Valve for changing the direction of flow in pipes leading to/from a heat-exchanger |
| CN2826109Y (en) * | 2005-07-18 | 2006-10-11 | 宝山钢铁股份有限公司 | Switching valve |
| CN201326598Y (en) * | 2008-11-14 | 2009-10-14 | 中国航空工业第一集团公司第一飞机设计研究院 | End-face sealed manual three-position four-way reversing rotary valve |
| CN201772103U (en) * | 2010-07-08 | 2011-03-23 | 宁波光华气动工业有限公司 | Three-position four-way hand-operated rotary valve |
| CN202579460U (en) * | 2012-05-29 | 2012-12-05 | 特福隆集团有限公司 | Hydraulic emergency operation module |
| CN203718037U (en) * | 2014-01-24 | 2014-07-16 | 安徽工程大学 | Disc type rotary bi-pass and double-break valve |
-
2016
- 2016-08-11 CN CN201610652637.8A patent/CN106015150A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4181067A (en) * | 1977-02-17 | 1980-01-01 | Riva Calzoni S.P.A. | Distributor for hydraulic motors |
| US6058974A (en) * | 1996-07-04 | 2000-05-09 | Blomgren; Ralf | Valve for changing the direction of flow in pipes leading to/from a heat-exchanger |
| CN2826109Y (en) * | 2005-07-18 | 2006-10-11 | 宝山钢铁股份有限公司 | Switching valve |
| CN201326598Y (en) * | 2008-11-14 | 2009-10-14 | 中国航空工业第一集团公司第一飞机设计研究院 | End-face sealed manual three-position four-way reversing rotary valve |
| CN201772103U (en) * | 2010-07-08 | 2011-03-23 | 宁波光华气动工业有限公司 | Three-position four-way hand-operated rotary valve |
| CN202579460U (en) * | 2012-05-29 | 2012-12-05 | 特福隆集团有限公司 | Hydraulic emergency operation module |
| CN203718037U (en) * | 2014-01-24 | 2014-07-16 | 安徽工程大学 | Disc type rotary bi-pass and double-break valve |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108278235A (en) * | 2018-01-18 | 2018-07-13 | 广东机电职业技术学院 | A kind of hydraulic volume limits device with hydraulic control positioning |
| CN108278235B (en) * | 2018-01-18 | 2023-07-14 | 广东机电职业技术学院 | Hydraulic volume limiting device with hydraulic control positioning function |
| CN112432043A (en) * | 2020-11-13 | 2021-03-02 | 贵州电网有限责任公司 | Electrical equipment mechanical jam-proof device |
| CN113600888A (en) * | 2021-08-20 | 2021-11-05 | 常州市科怡机械有限公司 | End face milling cutter head |
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Application publication date: 20161012 |