CN101082348A

CN101082348A - Leading type 2 or 3 position four-way integrated change valve

Info

Publication number: CN101082348A
Application number: CN 200610031741
Authority: CN
Inventors: 刘建辉
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-05-31
Filing date: 2006-05-31
Publication date: 2007-12-05

Abstract

The invention introduces a guide type four pass integration commutation valve which belongs to combination valve. It's suitable for diverse transmission of various fluids. Is the working valve making up with four unidirectional cutoff valves F1, F2, F3, F4 by working valve body. And also a composite valve making up with four unidirectional cutoff valves F1, F2, F3, F4 by control valve body and passing screw group. In four unidirectional cutoff valves, F1 and F4 are downstream valve, F2 and F3 are reflux valve, they are cross connected and distribute plane. The control valve and working valve are distributed in the same type. Commutation action of control valve is complete by pendulum arm promoting ejector pins. Commutation of working valve is complete by controlling of control valve. Realize the commutation function by cycle controlling on those eight unidirectional cutoff valves. There is no relative slip between seal surface of commutation valve. It can be automatic compensated after wearing. Service life can reach over to 20 million times.

Description

Leading type two (three) position four-way integrated change valves

Technical field

The four-way integrated change valve that the present invention relates to is a kind of fluid diverter valve that adopts new fluid transmission reversing principle to realize its function, belongs to the combination brake switch and proporting class, is applicable to that the commutation of various fluids is carried; Be particularly suitable for the usefulness of gas-pressure inner circulation linear reciprocating compressor transmission commutation.

Technical background

Selector valve is the basic component in the transmission fluid, and improving its working life is the target that the valve design producer pursues, and the convection cell transmission field is significant.

The selector valve of circulation can reduce following three kinds of forms in the world at present: guiding valve, cone rotary valve and plane rotary valve.Their common feature is: its function all realizes by the relative slippage between the functor sealing surface.The sealing face is an important structure face of realizing valve closing or unlatching, is again inevitably main wear surface in the action, is again simultaneously the main interface of causing selector valve to leak.

Therefore, be the important topic of fluid transmission field the working life of raising selector valve always.The past people realize by improving material and process means always.Though constantly make progress, never got the breakthrough of essence.So, how to improve and innovate from structure, be a kind of expectation of valve design developer and production firm the working life of fundamentally improving selector valve always.

Technology contents

The leading type four-way change-over valve that the present invention relates to, its basic design philosophy be with several independently stop valve be combined into a selector valve, realize commutation function by the switch of stop valve is controlled in proper order.

The major character of this leading type four-way change-over valve is: it is by four unidirectional stop valve F ₁, F ₂, F ₃, F ₄By the work operating valve that combines of valve body 2.1 and by other four unidirectional stop valve f ₁, f ₂, f ₃, f ₄Two overcurrent screws among two flowing hole A, the B connect the combination brake switch and proporting that forms for 1.3 groups to the control valve that combines by control valve body 4.1 on the control valve through being located at.Control valve 1.2 is provided with operation swing arm 4.3, and operating valve is provided with and starts joint 2.3 and one-way valve 2.4.

Described operating valve structure is shown in accompanying drawing 2a～e.It mainly is made up of valve seat 2.1, valve core 2.2, unlatching piston 2.3, startup valve 2.4, one-way valve 2.5 etc.Described four valve cores (unidirectional stop valve) are contained in the same plane of valve seat and are divided into two groups, F ₁, F ₂Be first group, F ₃, F ₄It is second group; At valve core F ₂, F ₃And F ₁, F ₄Between, be equipped with respectively and open piston H ₁And H ₂, open piston H ₁The piston rod end face at two ends respectively with valve core F ₂And F ₃Valve block contact (or close), open piston H ₂The piston rod end face at two ends respectively with valve core F ₁And F ₄Valve block contact (or close).Between four valve cores, use grate flow channel L ₂₂With valve core F ₂, F ₃Low-pressure cavity O ₂₂And O ₂₃Be communicated with, use air inlet runner L ₂₁With valve core F ₁And F ₄Hyperbaric chamber P ₂₁And P ₂₄Be communicated with, use runner L ₂₃With valve core F ₂Hyperbaric chamber P ₂₂With valve core F ₄Low-pressure cavity O ₂₄Be communicated with, use runner L ₂₄With valve core F ₃Hyperbaric chamber P ₂₃With valve core F ₁Low-pressure cavity O ₂₁Be communicated with.Runner L ₂₅And L ₂₆An end open piston H with two respectively ₁And H ₂Two ends Q ₁, Q ₂Communicate, the other end is respectively equipped with the screw that is connected with overcurrent screw 1.3 and is communicated with.Operating valve valve core structure as shown in Figure 3.Form by interior cover 3.1, plug 3.2, guide pin bushing 3.3, this special envelope 3.5, valve seat 3.9, valve block 3.11, spring 3.12, overcoat 3.13, valve block cover 3.15 etc.

The structure of control valve is shown in accompanying drawing 4a～e.It mainly is made up of valve seat 4.1, valve core 4.2 and swing arm 4.3.Four valve cores are contained in the same plane of valve seat and are divided into two groups, f ₁, f ₂Be first group, f ₃, f ₄It is second group; Between two groups of valve cores swing arm is housed.Placement and operating valve between four valve cores are identical.

Control valve valve core structure is shown in (accompanying drawing 5).Form by plug 5.1, push rod 5.2, guide pin bushing 5.3, this special envelope 5.4, valve seat 5.7, valve block 5.8, spring 5.9, shell 5.10, valve block cover 2.15, cushion cover 5.15, packing ring 5.16 etc.

This integrated change valve according to above-mentioned design proposal design, owing to adopt unidirectional stop valve to combine, control effectively in proper order by switch and to realize commutation function unidirectional stop valve, discarded traditional selector valve and can only realize unique classical mode of commutating, thereby made because the leakage problem that the wearing and tearing of sealing surface cause fundamentally is resolved by the relative slippage between the sealing surface.

Marginal data

Accompanying drawing 1-overall structure schematic representation of the present invention;

Accompanying drawing 2a～e-operating valve structural representation;

Accompanying drawing 3-operating valve valve core structural representation;

Accompanying drawing 4a～e-control valve structural representation;

Accompanying drawing 5-control valve valve core structural representation;

Accompanying drawing 6-swing arm assembly structural representation;

Sequence number among the figure: 1.1-operating valve 1.2-control valve 1.3-overcurrent screw M ₁, M ₂2.1-operating valve valve seat 2.2-valve core F ₁, F ₂, F ₃, F ₄2.3-open piston H ₁, H ₂2.4-start the special envelope of cover 3.2-plug 3.3-guide pin bushing 3.5-Si 3.9-valve seat 3.11-valve block 3.12-spring 3.13-overcoat 3.15-valve block cover 3.4,3.6-packing ring 3.7,3.8,3.10,3.14-O type circle 4.1-control valve valve seat 4.2-valve core f in the joint 2.5-one-way valve 3.1- ₁, f ₂, f ₃, f ₄4.3-the special envelope of swing arm assembly 5.1-plug 5.2-push rod 5.3-guide pin bushing 5.4-Si 5.7-valve seat 5.8-valve block 5.9-spring 5.10-shell 2.15-valve block cover 5.15-cushion cover 5.16-packing ring 5.5,5.7,5.11,5.13, wheel 6.3-top, 5.14-O type circle 6.1-swing arm 6.2-top wheel shaft 6.4-arm shaft 6.5-push boat 6.6-push boat axle

Code name among the figure: A, B-flowing hole D ₁, D ₂, D ₃, D ₄-control valve valve mandril K ₁-operating valve intake interface K ₂-operating valve exhaust port K ₃, K ₄-operating valve working interface k ₁-control valve intake interface k ₂-control valve exhaust port k ₃, k ₄-control valve working interface L ₂₁-operating valve air inlet runner L ₂₂-operating valve grate flow channel L ₂₃, L ₂₄-operating valve work runner L ₄₁-control valve air inlet runner L ₄₂-control valve grate flow channel L ₄₃, L ₄₄-control valve work runner O _IjThe low-pressure cavity P of the corresponding valve core of-corresponding figure number _IjThe hyperbaric chamber Q of the corresponding valve core of-corresponding figure number ₁-startup piston left end Q ₁-startup piston right-hand member

Embodiment

The general structure of the leading type two-position four-way integrated change valve shown in Fig. 1～5 as shown in Figure 1.It mainly is made up of operating valve 1.1 and control valve 1.2 two-part; Be connected with overcurrent screw 1.3 between operating valve and the control valve.

Operating valve 1.1 mainly is made up of valve seat 2.1, valve core 2.2, unlatching piston 2.3 etc.Valve core is by opening the unidirectional stop valve that piston promotes unlatching, spring return.Four valve cores are divided into two groups, F ₁And F ₂Be one group, F ₃And F ₄Be another group.A following current valve and a reflux valve are all arranged, F in each group ₁And F ₄Be following current valve, F ₂And F ₃Be reflux valve.Open piston H ₁An end and H ₂An equidirectional end is interconnected with pore, and this makes F ₁And F ₂Switch is synchronous, F ₃And F ₄Switch is synchronous.Valve seat 1.1 is provided with four interface K ₁, K ₂, K ₃, K ₄, K ₁Be intake interface, K ₂Be exhaust port, K ₃, K ₄Be working interface.Intake interface K ₁With unidirectional stop valve F ₁And F ₄" P " (high pressure) chamber between use pipeline L ₂₁Be communicated with exhaust port K ₂With unidirectional stop valve F ₂And F ₃" O " (low pressure) chamber between use pipeline L ₂₂Be communicated with working interface K ₃With unidirectional stop valve F ₄" O " chamber and F ₂" P " chamber between use pipeline L ₂₃Be communicated with working interface K ₄With unidirectional stop valve F ₁" O " chamber and F ₃" P " chamber between use pipeline L ₂₄Be communicated with.Startup joint 2.4 and one-way valve 2.5 are housed on the valve body 2.1, are used for starting first.

The structural type of control valve 1.2 is shown in Fig. 4 a～e.Its structural principle is all identical with operating valve with spread pattern, and the unidirectional stop valve valve of different is operating valve is opened by opening piston 2.3, and the valve of control valve is opened by swing arm 4.3.Two working interface k of control valve ₃And k ₄Lay respectively among flowing hole A and the B, this makes the working air current of control valve to introduce operating valve by the overcurrent screw and promotes to open piston.

Two position four-way integrated change valves when original state, two groups of valve core F of modus operandi ₁, F ₂And F ₃, F ₄Valve all be in opening state (shown in Fig. 2 c), two groups of valve core f of control valve ₁, f ₂And f ₃, f ₄Valve all be in closed condition (shown in Fig. 4 b).Two groups of valve core f of control valve ₁, f ₂And f ₃, f ₄Valve can back down by swing arm top wheel.When promoting the swing arm push boat to the right, valve core f ₁, f ₂Valve opening (shown in Fig. 4 c).Pressurized gas is from valve core f ₁P ₄₁Hyperbaric chamber flows to O ₄₁Low-pressure cavity is then through runner L ₄₄Flow into working interface k ₄, again through overcurrent screw M ₂Enter the control runner L of operating valve ₂₆, flow into and open piston H ₁And H ₂The air cavity of right-hand member promotes H ₁And H ₂Back down operating valve valve core F left, ₁And F ₂Valve block (shown in Fig. 2 d), and F ₃, F ₄Valve block then because H ₁And H ₂Left lateral and closing.Meanwhile, open piston H ₁And H ₂Pressurized gas in the left end air cavity is through control runner L ₂₅With overcurrent screw M ₁Enter control valve runner L ₄₃Inflow control valve valve core f ₂Hyperbaric chamber P ₄₂Because valve core f ₂Valve block backed down P ₄₂And O ₄₂Communicate, gas is just from control valve relief opening k ₂Discharge.And at operating valve valve core F ₁And F ₂Valve block backed down after, from operating valve suction port K ₁The pressurized gas that flows into is through valve core F ₁P ₂₁The chamber flows into O ₂₁, then through runner L ₂₄Flow to working interface K ₄Simultaneously, from working interface K ₃The gas that flows into is through runner L ₂₃Enter valve core F ₂Hyperbaric chamber P ₂₂Because valve core F ₂The valve block piston that has been unlocked back down, enter valve core F ₂Pressurized gas just by P ₂₂Flow into O ₂₂And from K ₂Discharge.Otherwise, when promoting the swing arm push boat left, valve core f ₃, f ₄Valve opening (shown in Fig. 4 d).Pressurized gas is from valve core f ₄P ₄₄Hyperbaric chamber flows to O ₄₄Low-pressure cavity is then through runner L ₄₃Flow into working interface k ₃, again through overcurrent screw M ₁Enter the control runner L of operating valve ₂₅, flow into and open piston H ₁And H ₂The air cavity of left end promotes H ₁And H ₂Back down operating valve valve core F to the right, ₃And F ₄Valve block (shown in Fig. 2 e), and F ₁, F ₂Valve block then because H ₁And H ₂Right lateral and closing.Meanwhile, open piston H ₁And H ₂Pressurized gas in the right-hand member air cavity is through control runner L ₂₆With overcurrent screw M ₂Enter control valve runner L ₄₄Inflow control valve valve core f ₃Hyperbaric chamber P ₄₃Because valve core f ₃Valve block backed down P ₄₃And O ₄₃Communicate, gas is just from control valve relief opening k ₂Discharge.And at operating valve valve core F ₃And F ₄Valve block backed down after, from operating valve suction port K ₁The pressurized gas that flows into is through valve core F ₄P ₂₄The chamber flows into O ₂₄, then through runner L ₂₃Flow to working interface K ₃Simultaneously, from working interface K ₄The gas that flows into is through runner L ₂₄Enter valve core F ₃Hyperbaric chamber P ₂₃Because valve core F ₃The valve block piston that has been unlocked back down, enter valve core F ₃Pressurized gas just by P ₂₃Flow into O ₂₃And from K ₂Discharge.

Within the specific limits, as the unlatching piston H of operating valve ₁, H ₂The total length of (together with piston rod) is during greater than certain size, four unidirectional stop valve F of operating valve ₁, F ₂, F ₃, F ₄Valve

The unlatching piston H of operating valve ₁, H ₂Piston rod have a critical length, under free state, work as H ₁, H ₂The length of piston rod during greater than its critical length, four unidirectional stop valve F of operating valve ₁, F ₂, F ₃, F ₄Valve all open, at this moment operating valve is a normally open valve; Work as H ₁, H ₂The length of piston rod less than when its critical length, four unidirectional stop valve F of operating valve ₁, F ₂, F ₃, F ₄Valve all close, at this moment operating valve is a normally close valve; Work as H ₁The length of piston rod greater than its critical length, H ₂The length of piston rod during less than its critical length, at four unidirectional stop valve F of operating valve ₁, F ₂, F ₃, F ₄In, following current valve F ₁, F ₄Normally closed, reflux valve F ₂, F ₃Often open; And work as H ₁The length of piston rod less than its critical length, H ₂The length of piston rod during greater than its critical length, at four unidirectional stop valve F of operating valve ₁, F ₂, F ₃, F ₄In, following current valve F ₁, F ₄Often open reflux valve F ₂, F ₃Normally closed.Same situation also exists in control valve.In actual applications, use operating valve often made and open, control valve is made normally closed method integrated change valve is made two-position four way change valve; Normally closed with operating valve is made, the following current valve f of control valve ₁, f ₄Make normally closed, reflux valve f ₂, f ₃Make the method for often opening integrated change valve is made three position four-way directional control valve.

By projected life of the above integrated change valve that manufactures and designs more than 2,000 ten thousand times, be suitable for pressure and surpass 40MPa.This valve has been successfully applied in the driving gas circuit of gas-pressure inner circulation linear reciprocating compressor, has reached desirable effect.

This leading type four-way integrated change valve not only can be used for pneumatic circuit, also can be used for oil hydraulic circuit, is a kind of fluid diverter valve that extensively is suitable for.

Claims

1, a kind of four-way integrated change valve.It is characterized in that: operating valve 1.1 and control valve 1.2 are by four valve cores (unidirectional stop valve) F ₁, F ₂, F ₃, F ₄And f ₁, f ₂, f ₃, f ₄Combine; Use the overcurrent screw M among two flowing hole A, the B that is located on the control valve 1.2 between two valves ₁And M ₂Connect.

2, the described a kind of four-way integrated change valve of claim 1 is characterized in that: each valve core in the described operating valve 1.1 all is made up of interior cover 3.1, plug 3.2, guide pin bushing 3.3, this special envelope 3.5, valve seat 3.9, valve block 3.11, spring 3.12, overcoat 3.13, valve block cover 3.15 etc.; Described four valve cores are contained in the same plane of valve seat and are divided into two groups, F ₁, F ₂Be first group, F ₃, F ₄It is second group; At valve core F ₂, F ₃And F ₁, F ₄Between, be equipped with respectively and open piston H ₁And H ₂, open piston H ₁The piston rod end face at two ends respectively with valve core F ₂And F ₃Valve block contact, open piston H ₂The piston rod end face at two ends respectively with valve core F ₁And F ₄Valve block contact.Between four valve cores, use grate flow channel L ₂₂With valve core F ₂, F ₃Low-pressure cavity O ₂₂And O ₂₃Be communicated with, use air inlet runner L ₂₁With valve core F ₁And F ₄Hyperbaric chamber P ₂₁And P ₂₄Be communicated with, use runner L ₂₃With valve core F ₂Hyperbaric chamber P ₂₂With valve core F ₄Low-pressure cavity O ₂₄Be communicated with, use runner L ₂₄With valve core F ₃Hyperbaric chamber P ₂₃With valve core F ₁Low-pressure cavity O ₂₁Be communicated with.Runner L ₂₅And L ₂₆An end open piston H with two respectively ₁And H ₂Two ends Q ₁, Q ₂Communicate, the other end is respectively equipped with the screw that is connected with overcurrent screw 1.3.

3, the described a kind of four-way integrated change valve of claim 1, it is characterized in that: described control valve 1.2 structural principles are all identical with operating valve with spread pattern, the unidirectional stop valve valve of different is operating valve is opened by opening piston 2.3, and the valve of control valve is opened by swing arm 4.3.Two working interface k of control valve ₃And k ₄Lay respectively among flowing hole A and the B, the working air current of control valve can be introduced operating valve by the overcurrent screw and promote to open piston.

4, the described a kind of four-way integrated change valve of claim 1 is characterized in that: within the specific limits, and as the unlatching piston H of operating valve ₁, H ₂The total length of (together with piston rod) is during greater than certain size, four unidirectional stop valve F of operating valve ₁, F ₂, F ₃, F ₄Valve all open, at this moment operating valve is a normally open valve; Work as H ₁, H ₂Length during less than this size, four unidirectional stop valve F of operating valve ₁, F ₂, F ₃, F ₄Valve all close, at this moment operating valve is a normally close valve; Work as H ₁The length of piston rod greater than this size, H ₂The length of piston rod during less than this size, at four unidirectional stop valve F of operating valve ₁, F ₂, F ₃, F ₄In, following current valve F ₁, F ₄Normally closed, reflux valve F ₂, F ₃Often open; And work as H ₁The length of piston rod less than this size, H ₂The length of piston rod during greater than this size, at four unidirectional stop valve F of operating valve ₁, F ₂, F ₃, F ₄In, following current valve F ₁, F ₄Often open reflux valve F ₂, F ₃Normally closed.Same situation also exists in control valve.In actual applications, use operating valve often made and open, control valve is made normally closed method integrated change valve is made two-position four way change valve; Normally closed with operating valve is made, the following current valve f of control valve ₁, f ₄Make normally closed, reflux valve f ₂, f ₃Make the method for often opening integrated change valve is made three position four-way directional control valve.