CN103791120A

CN103791120A - Rotary multi-way reversing valve

Info

Publication number: CN103791120A
Application number: CN201210430277.9A
Authority: CN
Inventors: 宋久林; 李�权
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-11-01
Filing date: 2012-11-01
Publication date: 2014-05-14
Also published as: CN103851225A

Abstract

The invention provides a valve and discloses a rotary multi-way reversing valve which comprises a valve body. Two double-channel input holes or 2N multi-way double-channel output holes are arranged on the valve body, the valve body can be formed by assembling multiple parts, channel holes are positioned on different parts, and a valve core which is axially limited and can rotate around an own axis line is arranged in the valve body, and the valve core has multiple rotating positions and can enable the double-channel input holes and selected double-channel output holes to be in a two-two parallel manner or crossed communication manner. The rotary multi-way reversing valve integrates functions of opening and closing, reversing and multi-way reversing, has the advantages of large through-flow quantity, high pressure resistance, low pressure loss, quite few internal leakage, can replace a large-drift-diameter reversing valve and a logic cartridge valve in an open-type system, can realize switching of control, on multiple execution mechanisms, of an oil pump of a closed-type system, can conveniently realize expanding of the functions according to needs of actual application, and has wide application prospect in a high-flow high-pressure system.

Description

Rotary many logical selector valves

Technical field

The present invention relates to a kind of fluid multi-channel reversing valve.

Background technique

In circulating pressure fluid system, every road fluid comes/returns all to need 2 passages to carry, and the control of flow in passage all must be carried out by 2 passages as ON/OFF, commutation and the switching between different pipelines simultaneously.The most frequently used method of people is just used on every passage in parallel 4 logical selector valves (as 34 electric change valves), any road need to just open can also controlling party to, simple in structure, application also very flexibly.But selector valve is all generally sliding valve style at present, fluid is through wherein having many pressure and flow loss, and especially, in the system of large flow, high pressure, it causes the loss of system capability obvious especially.Thereby for improving system effectiveness, in Mass flow system, people often realize the function such as switch, commutation and switching of fluid by controlling their logical relations each other with multiple two-way plug-in valves; Two-way plug-in valve through-current capacity is large, and the pressure loss is low more many than sliding valve style, also can realize zero leakage; But Twoway valves piece need to customize according to concrete demand, use object is very targeted, versatility is not strong, simultaneously Twoway valves switch can produce rapidly larger system shock, and its manufacturing cost compare is high, system energy loss or the deficiency such as bigger than normal under heavy traffic condition; Closed system is owing to there is no control valve in pipeline, its transmission efficiency is higher and become the developing direction of big-flow high-pressure system than open system, in this system, in principle, each oil pump or pump group can only be controlled a set of actuator, when there being multiple actuators, when their work is overlapping again, too much oil pump will cause the waste of resource and energy again.

Order of the present invention is to provide a kind of valve for addressing the above problem.Its volume is smaller, through-current capacity is large, internal leakage little (being zero substantially), the pressure loss are very low, and can realize 1 tunnel Twin channel and circulate to the twin-channel switch of multichannel, commutation and switching function.

Summary of the invention

Rotary many logical selector valves.

The present invention relates to a kind of rotary reversing valve, it has a valve body, on valve body with 1 tunnel Twin channel input hole (2) and 1 road or multichannel Twin channel delivery outlet (2N); Valve body also can be assembled by multi-part, and port hole is arranged on different parts; In valve body, be equipped with one by axial limiting and can be around the spool of Pivot Point Center line rotation, it is parallel or intersect connection between two that spool has multiple rotational position 1 tunnel Twin channel input hole and selected Yi road Twin channel delivery outlet can be carried out.

accompanying drawing explanation,below in conjunction with accompanying drawing, the present invention is described in further details.

The fundamental diagram of the many way rotary valves of Fig. 1 the present invention.

Fig. 2 the present invention 4/6/8 way rotary valve is connected schematic diagram at diverse location passage.

The structure principle chart of Fig. 3 first embodiment of the invention.

Fig. 4 first embodiment of the invention 6 way rotary valve core sectional views.

The structure principle chart of Fig. 5 second embodiment of the invention.

Fig. 6 second embodiment of the invention 6 way rotary valve cored structure figure.

The outlet sealing device sectional drawing that Fig. 7 the present invention is installed additional on spool.

Fig. 1 is the fundamental diagram of rotary valve of the present invention, and A/B is and 2 input channels of fluid, and C/D/E/F/G/H is output channel hole, and its quantity can be any even number (optimum is 4).A1/b1 is the opening that A/B is connected with output channel, it two be mutually 180 degree arrange (uniform) on same circumference; C1/d1/e1/f1/h1/g1 is the opening of output channel hole and spool cooperation place, and wherein bilateral road junction, every road is between two 180 degree it is separately arranged in (also can be uniform) on the circumference identical with a1/b1.Work as Spool rotating, a1/b1 just can be 180 degree with c1/d1/e1/f1/h1/g1 and be communicated with between two.

Fig. 2 is that 4/6/8 way rotary valve spool is connected schematic diagram at diverse location passage, and wherein 6,8 way rotary valves are the same with 4 logical valves, can also have a neutral position that makes each passage cut-off between each commutation position.

Consider that the connection that has (flow face) on a variety of surface of revolution can realize Kong Yukong coordinates, it can be cylndrical surface, conical surface, sphere, plane, shaped face etc., below just take typical cylndrical surface and plane as the first embodiment and the second embodiment the invention will be further described.

The first embodiment (Fig. 3) is using the cylndrical surface of spool as flow face; In figure: 1 is rotary spool, 2 is valve body, and 3 is device for driving valve body, and 4 is end cap, and 5 is rotating seal, and 6 is outlet sealing device, and 7 is bearing; A/B is input Twin channel hole, and C/D/E/F/G/H is output channel hole; K-K sectional view has been enumerated respectively 2,4, sectional view when 6 output channel holes, also illustrates that accordingly it is feasible that multiple-way valve of the present invention connects more multichannel dual output passage; In this example, be the normal open that guarantees 2 guide holes (Ta/Tb) and A/B aqueduct hole in spool, on the running shaft of 2 connectivity parts (a1 b1), have annular diversion trench, this guiding gutter also can be opened on valve body certainly; Rotating seal (5) is in order to eliminate leakage axial between spool and spool bore; Outlet sealing device (6) is the leakage being communicated with between rear intercommunicating pore in order to reduce as far as possible.Bearing (7) plays axial limiting and supporting role to spool and can make the less power of drive unit (3) accurately move between each position with regard to actuatable valve core; Drive unit (3) can comprise manually, reducing motor, liquid hole motor, oil cylinder etc.

The second embodiment (Fig. 5) is using the end face (plane) of spool as flow face, in figure: 1 for rotary spool, and 2 is valve body, and 3 is device for driving valve body, and 4 is end cap, and 5 is rotating seal, and 6 is outlet sealing device, and 7 is bearing; 8 is selecting side cover plate, and 9 is cover plate for sealing circle, and 10 is spring, and 11 is connecting sleeve; The second embodiment is the same with first embodiment's principle, but because the connection fitting surface of the second example is in axle head plane, and the thrust that fluid produces in passway has and makes to connect the trend that fitting surface separates along axially pushing away spool; For guaranteeing closely cooperating of junction surface, in example two, add spring (9), it will apply certain precompression to connecting fitting surface, moreover on running shaft, with A/B input channel joint, 2 step surfaces (Za/Zb) are respectively set, utilize input channel A/B mouth pressure step surface form active force auto-alignment to pipeline power compensate.For the convenience of processing, installing, this embodiment's valve body structure has changed into split type, and input channel mouth is positioned on different parts from output channel mouth, and after assembling, both are fixedly connected with use.

Fig. 4 is valve first embodiment's 6 way rotary valve spool sectional views of the present invention, and on its sectional view K-K, its effect of duct (TX) of lateral direction penetrating is between two passages of same road, to be interconnected.Fig. 6 is the logical valve core structure figure of the second embodiment 6, and it also has the passage that same paths is communicated with; In the time having more multichannel Twin channel output, between each paths, also have more Placement, it need to combine according to concrete actual demand.

Fig. 7 is valve outlet port seal arrangement sectional drawing of the present invention; 1 is valve body, the 2nd, and sealed pressing sleeve, the 3rd, O shape circle, the 4th, wavy spring; The 5th, spool; Sealed pressing sleeve (2) is cylinder type, and its material is copper, nylon or the high-intensity material of other low frictions; Can find out from its structural drawing no matter pipeline pressure is how many, spring (4) will remain closely cooperating of sealed pressing sleeve (2) and valve body (1), automatically spool (5) and the gap of valve body (1) be compensated, and prevent the leakage of fluid.

Cross the first embodiment for logical and can find out that with the second embodiment the commutation process of valve of the present invention is exactly the process of mutually sliding and contact, intersect, overlap in 2 holes on plane or surface of revolution; 2 coincidence district, holes are exactly the opening of valve flow, and its large young pathbreaker is along with the angle of swing of spool constantly increases or reduces, and that is to say that angle of swing and the speed of controlling spool can control output flow size and the increment of valve.Thereby valve of the present invention not only has little reversing impact, can also further utilize accurate drive unit as stepper motor, add the sensor such as pressure, corner, just can carry out intellectuality with software to circulation, speed, the pressure of valve output according to the actual demand of actuator controls, arrive the performance identical with high-performance ratio selector valve, meet more high-end demand.

Feature by above-mentioned chatted known valve multichannel rotary valve of the present invention:

1. can realize 1 tunnel Twin channel fluid to 1 road or the twin-channel switch of multichannel, commutation and switching;

2. be communicated with the inside duct of rear valve body by internal run-through by the various connections of 2 passage, it is withstand voltage height, through-current capacity is large, the pressure loss is very little;

3. valve inner duct adds independently Sealing or seal arrangement, and internal leakage is very little is even zero, and convection cell turbidity test require lower;

4. have can various structures mode for valve body, spool, and driving mode is flexible, and Function Extension is convenient, can be applicable to different occasions;

5. simple in structure, volume is little, easy to process.

Claims

1. rotary many logical selector valves, it is with 1 tunnel Twin channel input hole (2) and 1 road or multichannel Twin channel delivery outlet (2N), and it is parallel or intersect connection between two that valve has multiple positions 1 tunnel Twin channel input hole and selected Yi road Twin channel delivery outlet to be carried out simultaneously.

2. rotary valve according to claim 1, is characterized in that chatted valve has a valve body, has a spool bore in valve body, and all port holes are arranged on valve shell and keep being communicated with spool bore.

3. rotary valve according to claim 2, described valve body is assembled by multi-part, and described input hole is placed on different parts from delivery outlet.

4. rotary valve according to claim 1, is characterized in that, described valve further comprises a rotary spool, and it can rotate to move between described position around axis, and comprises duct and opening that described input channel hole is communicated with described output channel hole.

5. rotary valve according to claim 4, is characterized in that, described valve further comprises the drive unit that drives Spool rotating.

6. rotary valve according to claim 4, is characterized in that, described valve further comprises the rotating seal between valve body and spool.

7. rotary valve according to claim 4, is characterized in that, described spool comprises the duct being interconnected between output channel hole and opening.

8. rotary valve according to claim 4, is characterized in that, described valve further comprises the seal arrangement between spool and output channel mouth.

9. rotary valve according to claim 8, is characterized in that, the gapped automatic makeup of described valve sealing means band is tasted function.

10. rotary valve according to claim 4, is characterized in that, described spool Yu Suoxuge road output channel is communicated with on Spool rotating surface.

11. rotary valves according to claim 4, is characterized in that, described spool Yu Suoxuge road output channel is communicated with on spool one end face.

12. rotary valves according to claim 11, is characterized in that, described valve further comprises one or more springs.

13. rotary valve according to claim 11, is characterized in that, described spool is being provided with step surface with 2 input channel link positions.

14. rotary valve according to claim 4, is characterized in that, described spool is bearing on valve body by bearing.