CN202451894U

CN202451894U - One-way valve

Info

Publication number: CN202451894U
Application number: CN2011204808828U
Authority: CN
Inventors: 王定军; 王鑫楠
Original assignee: Zhejiang Dunan Machinery Co Ltd
Current assignee: Zhejiang Dunan Machinery Co Ltd
Priority date: 2011-11-28
Filing date: 2011-11-28
Publication date: 2012-09-26
Anticipated expiration: 2021-11-28

Abstract

The utility model discloses a one-way valve, which comprises an outer tube, a valve seat and a movable valve core, wherein the valve seat is fixedly arranged in the outer tube and is provided with an axial through hole; the movable valve is slidably arranged in the axial through hole of the valve seat; the front section of the valve seat is provided with a valve port; the wall face of the axial through hole behind the valve port is provided with a flow-out hole; the rear end of the valve seat is fixedly provided with a buffer end cover; and the buffer end cover is provided with a circulating hole. The one-way valve has the advantages that a refrigerant enters from the circulating hole to push the valve core to move, the direct effect of the back-flush refrigerant on the valve core is reduced, the acting force on the valve core is reduced, the space between the valve core and the buffer end cover is gradually increased along with movement of the valve core towards the valve port, further the acting force of the back-flush refrigerant on the valve core is reduced to enable the valve core to slowly move, the impact force of the valve core to the valve seat is effectively reduced, the noise during work of the one-way valve is reduced, and the service life of the one-way valve is prolonged.

Description

A kind of one-way valve

Technical field

The utility model relates to a kind of one-way valve.

Background technique

In air-conditioning system, heat pump type air conditioning system particularly, high pressure refrigerant adverse current improves cold medium flux at heating condition simultaneously when compressor stops in the anti-locking system, reaches the purpose that heats fast, and one-way valve need be installed on refrigeration system.China national Department of Intellectual Property discloses one-way control valve on September 2nd, 2009; Wherein the closed end of shock absorber has an overflow hole, and shock absorber can cooperate in the axial hole of valve seat, is installed between spool and the baffle ring; Can in the axial hole of valve seat, endwisely slip; Shock absorber also can move to valve port when having anti-stream refrigerant logical, and its buffer cavity changes and be not obvious, and is still very big to the impact force of valve seat.

The model utility content

The purpose of the utility model is to provide a kind of one-way valve, can effectively solve existing one-way valve shock absorber and be movably arranged in the spool, and when the refrigerant recoil was arranged, spool was excessive to the valve seat impact force, causes one-way valve shorter problem in working life.

In order to solve the problems of the technologies described above; The utility model is realized through following technological scheme: a kind of one-way valve; Comprise outer tube, be fixed on the valve seat with axial hole in the outer tube, be slidingly arranged in the movable spool in the axial hole of valve seat, the leading portion of said valve seat is provided with valve port, on the axial hole wall of valve port rear side, has outflow opening; The rear end of said valve seat is fixed with the buffering end cap, has overflow hole on the said buffering end cap.

Preferably, said movable spool comprises the mouth-sealed portion of sealing valve port, and mouth-sealed portion is extended with the guide portion that cooperates with the axial hole internal face of valve seat towards the direction of buffering end cap; The weight of reduction activity spool, the area of contact of take in sail spool and valve base inner wall, thus reduce noise.

Preferably, the inner side surface of said buffering end cap is provided with at least two boss that cooperate with movable spool ear end face, is formed with the groove that is communicated with overflow hole between the boss; Reduce the surface of contact between movable spool and the buffering end cap, provided buffer space for anti-stream refrigerant enters between buffering end cap and the movable spool simultaneously.

Further, the middle part of said boss periphery has the closing in groove, and the rear end of said valve seat is provided with conical contraction flow region, and said contraction flow region is stuck in the closing in groove; Cooperate with the closing in groove through contraction flow region and will cushion end cap and fix fixation.

Optional, the root of said boss periphery has the closing in groove, and the rear end of said valve seat is provided with conical contraction flow region, and said contraction flow region is stuck in the closing in groove, is provided with the retaining eaves that blocks contraction flow region between said buffering end cap and the closing in groove; Another kind is fixed on the structure on the valve seat with end cap.

Preferably, said buffering end cap is the plane towards the end face of movable spool, and said movable spool is provided with the craspedodrome groove towards the end face of buffering end cap.

Optional, said buffering end cap is the plane towards the end face of movable spool, said movable spool also is the plane towards the end face of buffering end cap.

Further, the rear end of said valve seat is provided with the step hole port and shrinks the conical contraction flow region that forms, and said buffering end cap is fixed in the contraction flow region; Simple to operate in the time of fixedly, fixing reliable.

Preferably, said valve port is provided with ring rib towards the end face of movable spool, and said movable spool has the annular groove suitable with ring rib on the end face of valve port, be provided with sealing gasket in the said annular groove; Simple in structure, easy to process, the sealing gasket through movable spool cooperates with the ring rib of valve seat and seals, and reliability is high, good sealing effect, and long service life, and effectively reduce noise.

Compared with prior art, the utility model has the advantages that: refrigerant gets into from overflow hole and promotes valve core movement, has reduced the direct effect of recoil refrigerant to spool; Reduced active force to spool; Along with spool moves to the valve port direction, the space between spool and the buffering end cap increases gradually, has further reduced the active force of anti-stream refrigerant to spool again; Make spool to move slowly; Effectively reduce the impact force of spool, reduced the noise when one-way valve is worked, prolonged the working life of one-way valve valve seat.

Description of drawings

Structural representation when Fig. 1 is the circulation of a kind of one-way valve refrigeration agent of the utility model forward;

Structural representation when Fig. 2 is a kind of one-way valve refrigeration agent of the utility model reverse circulated;

Fig. 3 is the structural representation of buffering end cap among a kind of one-way valve embodiment one of the utility model;

Fig. 4 is for cushioning the structural representation of end cap, valve seat, the combination of movable spool among a kind of one-way valve embodiment one of the utility model;

Fig. 5 is for cushioning the structural representation of end cap, valve seat, the combination of movable spool among a kind of one-way valve embodiment two of the utility model;

Fig. 6 is the structural representation of movable spool among a kind of one-way valve embodiment two of the utility model;

Fig. 7 is the structural representation of buffering end cap among a kind of one-way valve embodiment three of the utility model;

Fig. 8 is for cushioning the structural representation of end cap, valve seat, the combination of movable spool among a kind of one-way valve embodiment three of the utility model;

Fig. 9 is the structural representation of movable spool among a kind of one-way valve embodiment five of the utility model.

Embodiment

Embodiment one:

Consult Fig. 3, Fig. 4 embodiment one for a kind of one-way valve of the utility model; A kind of one-way valve comprises outer tube 1, is fixed on the valve seat with axial hole 2 in the outer tube 1, is slidingly arranged in the movable spool 3 in the axial hole of valve seat 2, and the leading portion of said valve seat 2 is provided with valve port 22; On the axial hole wall of valve port 22 rear sides, have outflow opening 23; The rear end of said valve seat 2 is fixed with buffering end cap 5, has overflow hole 51 on the said buffering end cap 5, and said movable spool 3 is the plane with the surface of contact of buffering end cap 5; The inner side surface of said buffering end cap 5 is provided with at least two boss 53 that cooperate with movable spool 3 ear end faces; Be formed with the groove 6 that is communicated with overflow hole 51 between the boss 53, be provided with the buffer cavity 34 towards buffering end cap 5 in the said mouth-sealed portion, the rear end of said valve seat 2 is provided with the step hole port and shrinks the conical contraction flow region 21 that forms; Said buffering end cap 5 is fixed in the contraction flow region 21; Said valve port 22 is provided with ring rib 31 towards the end face of movable spool 3, and said movable spool 3 has the annular groove suitable with ring rib 31 on the end face of valve port 22, be provided with sealing gasket 4 in the said annular groove.

Buffering end cap 5 can adopt with valve seat 2 interference fit or in valve seat 2, open the front portion that a step blocks buffering end cap 5, blocks the rear portion of cushioning end cap 5 through contraction flow region 21, fixes thereby will cushion end cap 5.

Embodiment two:

Consult Fig. 5, Fig. 6; To be to cushion contact with movable spool 3 structure of part of end cap 5 different with embodiment one difference; Concrete structure is: said buffering end cap 5 is the plane towards the end face of movable spool 3, and said movable spool 3 is provided with craspedodrome groove 35 towards the end face of buffering end cap 5.

Can adopt with embodiment's one identical mode and fix buffering end cap 5.

Embodiment three:

Consult Fig. 7, Fig. 8; The means of fixation that is to cushion end cap 5 with embodiment one difference is different: the root of said boss 53 peripheries has closing in groove 52; The rear end of said valve seat 2 is provided with conical contraction flow region 21; Said contraction flow region 21 is stuck in the closing in groove 52, is provided with the retaining eaves 55 that blocks contraction flow region 21 between said buffering end cap 5 and the closing in groove 52.

As long as contraction flow region 21 is snapped in the reducing groove 54 on boss 53 circular arc wall, can will cushion end cap 5 and fix.

Embodiment four:

The means of fixation that is to cushion end cap 5 with embodiment one difference is different: the middle part of said boss 53 peripheries has closing in groove 52, and the rear end of said valve seat 2 is provided with conical contraction flow region 21, and said contraction flow region 21 is stuck in the closing in groove 52.

Embodiment five:

Consult Fig. 9; Be that with embodiment one difference the structure of movable spool 3 is different; Said movable spool 3 comprises the mouth-sealed portion 32 of sealing valve port 22; Mouth-sealed portion 32 is extended with the guide portion 33 that cooperates with the axial hole internal face of valve seat 2 towards the direction of buffering end cap 5, is provided with the buffer cavity 34 towards buffering end cap 5 in the said mouth-sealed portion.The means of fixation of buffering end cap 5 is identical with embodiment one.

Except that above five kinds of embodiments, also can adopt buffering end cap 5 to be provided with groove 6 towards the end face of movable spool 3, said movable spool 3 has the structure of craspedodrome groove 35 on the end face of buffering end cap 5; Cushion perhaps that two surface of contact can both be the structure on plane between end cap 5 and the movable spool 3.

During assembling, sealing gasket 4 interference fit are pressed in the annular groove of movable spool 3, afterwards with movable spool 3 along pack into the rear portion of valve seat 2 of axial direction; And make sealing gasket 4 circles can touch the ring rib 31 of valve seat 2; Movable spool 3 can endwisely slip at the rear portion of valve seat 2, will cushion the rear end that end cap 5 is fixed on valve seat 2 again, valve seat 2 is packed in the outer tube 1 again; Through instrument spinning outer tube 1, thereby valve seat 2 is fixed in the outer tube 1.

As shown in Figure 1, during work, when the refrigeration agent forward flow; Under the effect of flow path system pressure, movable spool 3 prolongs direction and slides, and is against on the buffering end cap 5; Refrigeration agent flows through outflow opening 23 from the valve port 22 of valve seat 2 front ends, flows out through the space between valve seat 2 and the outer tube 1 again.

As shown in Figure 2, when the refrigeration agent reverse flow, under the effect of flow path system pressure, movable spool 3 reverse slide, the sealing gasket 4 of movable spool 3 props up the ring rib 31 on the valve seat 2, thereby valve port 22 and outflow opening 23 are cut off, the refrigeration agent one-way valve that can not circulate.

Refrigerant gets into from overflow hole and promotes valve core movement, has reduced the direct effect of recoil refrigerant to spool, has reduced the active force to spool; Along with spool moves to the valve port direction, the space between spool and the buffering end cap increases gradually, has further reduced the active force of anti-stream refrigerant to spool again; Make spool to move slowly; Effectively reduce the impact force of spool, reduced the noise when one-way valve is worked, prolonged the working life of one-way valve valve seat.

The above is merely the specific embodiment of the utility model; But the technical characteristics of the utility model is not limited thereto; Any those skilled in the art is in the field of the utility model, and variation of being done or modification all are encompassed among the claim of the utility model.

Claims

1. one-way valve; Comprise outer tube (1), be fixed on the valve seat with axial hole (2) in the outer tube (1), be slidingly arranged in the movable spool (3) in the axial hole of valve seat (2); The leading portion of said valve seat (2) is provided with valve port (22); On the axial hole wall of valve port (22) rear side, have outflow opening (23), it is characterized in that: the rear end of said valve seat (2) is fixed with buffering end cap (5), has overflow hole (51) on the said buffering end cap (5).

2. a kind of one-way valve as claimed in claim 1; It is characterized in that: said movable spool (3) comprises the mouth-sealed portion (32) of sealing valve port (22), and mouth-sealed portion (32) is extended with the guide portion (33) that cooperates with the axial hole internal face of valve seat (2) towards the direction of buffering end cap (5).

3. a kind of one-way valve as claimed in claim 1; It is characterized in that: the inner side surface of said buffering end cap (5) is provided with at least two boss (53) that cooperate with movable spool (3) ear end face, is formed with the groove (6) that is communicated with overflow hole (51) between the boss (53).

4. a kind of one-way valve as claimed in claim 3; It is characterized in that: the middle part of said boss (53) periphery has closing in groove (52); The rear end of said valve seat (2) is provided with conical contraction flow region (21), and said contraction flow region (21) is stuck in the closing in groove (52).

5. a kind of one-way valve as claimed in claim 3; It is characterized in that: the root of said boss (53) periphery has closing in groove (52); The rear end of said valve seat (2) is provided with conical contraction flow region (21); Said contraction flow region (21) is stuck in the closing in groove (52), is provided with the retaining eaves (55) that blocks contraction flow region (21) between said buffering end cap (5) and the closing in groove (52).

6. a kind of one-way valve as claimed in claim 1 is characterized in that: said buffering end cap (5) is the plane towards the end face of movable spool (3), and said movable spool (3) is provided with craspedodrome groove (35) towards the end face of buffering end cap (5).

7. a kind of one-way valve as claimed in claim 1 is characterized in that: said buffering end cap (5) is the plane towards the end face of movable spool (3), and said movable spool (3) also is the plane towards the end face of buffering end cap (5).

8. like claim 3 or 6 or 7 described a kind of one-way valves, it is characterized in that: the rear end of said valve seat (2) is provided with the step hole port and shrinks the conical contraction flow region (21) that forms, and said buffering end cap (5) is fixed in the contraction flow region (21).

9. like each described a kind of one-way valve in the claim 1 to 7; It is characterized in that: said valve port (22) is provided with ring rib (31) towards the end face of movable spool (3); Said movable spool (3) has on the end face of valve port (22) and the suitable annular groove of ring rib (31), is provided with sealing gasket (4) in the said annular groove.