CN100430633C

CN100430633C - Four-way reversing valve

Info

Publication number: CN100430633C
Application number: CNB2007100690134A
Authority: CN
Inventors: 景昱东
Original assignee: Ningbo AAA Group Electric Appliance Co Ltd
Current assignee: Ningbo AAA Group Electric Appliance Co Ltd
Priority date: 2007-05-25
Filing date: 2007-05-25
Publication date: 2008-11-05
Anticipated expiration: 2027-05-25
Also published as: CN101059179A

Abstract

A four-way change-over valve includes valve body(1), spool components (2) and commutator (5), the spool components (2) includes columnar spool (21), spool spring (22), the first sealing sleeve (23) and the second sealing sleeve (24), the spool spring (22) is nested on said spool (21), one end is contacted with the step surface of said spool (21) and another end is contacted with the inner step surface of valve body(1), the commutator (5) is rotary-installed on the end surface of valve body(1) and near the rear end of said columnar spool (21), and it is equipped with end surface cam (51) which can drive spool move when rotates. Compared with the prior technology, the advantages of the invention is: it realizes the swift switching over between the fluid circuit and gas circuit through the open and close of commutator driving spool, the manipulation is simple and portable, the assemblage is swift and the cost is low.

Description

Four-way change-over valve

Technical field

The present invention relates to a kind of selector valve, relate in particular to a kind of four-way change-over valve that is applied to the inner liquid of coffee machine, gas circuit switching.

Background technique

Existing selector valve is of a great variety, use very wide, control mode is also various, common just have solenoid valve, ceramic valve or the like, with reference to Chinese model utility: ZL00218792.2, a kind of " four-way electromagnetic reversing valve " (publication number: CN2434494Y), with reference to Chinese utility model patent: ZL99244498.5, disclosed a kind of " porcelain core four-way valve " (publication number: CN2389274Y) again that is applied to air conditioner is disclosed.

Be applied to the selector valve in coffee machine boiler internal outlet port, the hot water that produces in the boiler can be derived and make coffee, perhaps the steam that produces in the boiler is derived and infuse coffee and milk, discharge again or with the waste water, the waste gas that produce in the boiler.The selector valve of existing application in this field generally also adopts ceramic valve core or electromagnetism to control, though the overall applicability effect can also be accepted, but be still waiting to improve, as: the selector valve operating force that ceramic valve core is made is very big, parts is various, preparation process is loaded down with trivial details, and the solenoid valve fabricating cost is very expensive, is difficult for promoting.

Summary of the invention

Technical problem to be solved by this invention is to provide a kind of can realize the four-way change-over valve that switches at the above-mentioned state of the art by rotation, and operation easily can reach fast derives hot water and make coffee, derive that steam is infused coffee or milk and the purpose that derives waste water, waste gas.

The present invention solves the problems of the technologies described above the technological scheme that is adopted: this four-way change-over valve is characterized in that comprising

Valve body which is provided with import, first outlet, second outlet and the 3rd outlet, and valve inner has the path that connects above-mentioned import and export;

Three groups of mangetic core assemblies that are used for the trend of gas-liquid in the control access are located on the path of valve body and corresponding with above-mentioned outlet respectively, and mangetic core assembly comprises again and be cylindrical spool, valve core spring, first stuffing box gland and second stuffing box gland,

Valve core spring is socketed on the aforementioned spool, and the step surface of an end and aforementioned spool offsets, the other end and valve body inner side step face offset, and first stuffing box gland is embedded in the aforementioned spool front end annular groove, and second stuffing box gland is embedded in the aforementioned spool rearward end annular groove; And

Be used to rotate the commutator that drives spool commutation keying, rotatably be located on the valve body end face and and close on the rearward end of aforementioned spool, the end cam that the actuatable valve core moves when having rotation on the commutator front-end face of valve body, front-end face extend back one can be for the rotary part of operation

During the commutator rotation, the end cam of front-end face drives one of them spool and moves in valve body, corresponding path depressurization, and other two spools maintain the original state, and are in closed state.

Be convenient to produce and die sinking, described valve body comprises valve body and the valve gap that is sealed and matched with valve body, and this valve body is provided with described import, first outlet, second outlet and the 3rd outlet, and described mangetic core assembly is located on the path of valve body.

As preferably, the import of described valve body, first outlet, second outlet and the 3rd outlet are arranged in the valve body both sides in twos.

The means of fixation of commutator can adopt following structure: described commutator rotatably is fixed on the end face of valve body surely by a compressing tablet and screw, and accordingly, valve body is provided with and is suitable for the screw that aforementioned screw thread connects.

As preferably, described end cam is two, and is provided with around the front-end face center, and the two has certain intervals.

Frictional force when reducing rotation is convenient to switch, and described spool exposes the end that valve body contacts with end cam and is hollows, and accordingly, described end cam both sides extend to the commutator front-end face from the end cam end face and are slope shape.

Compared with prior art, the invention has the advantages that: drive the keying of spool by commutator, thereby realize the quick switching of path between liquid, gas, simple to operate light; Overall structure is simple, and assembling is quick, and is cheap, is more suitable for numerous areas such as coffee machine.

Description of drawings

Fig. 1 is present embodiment stereoscopic figure.

Fig. 2 is the stereoscopic figure at another visual angle of present embodiment.

Fig. 3 is the decomposition assembling figure of present embodiment.

Fig. 4 is another visual angle decomposition assembling figure of present embodiment.

Fig. 5 is a commutator structure for amplifying schematic representation.

Fig. 6 is the selector valve structural representation when making coffee.

Fig. 7 is the sectional view of Fig. 6 along the A-A direction.

Fig. 8 is the sectional view of Fig. 7 along the B-B direction.

Fig. 9 is the rear view of Fig. 6.

Selector valve structural representation when Figure 10 is row's steam.

Figure 11 is the sectional view of Figure 10 along the C-C direction.

Figure 12 is the sectional view of Figure 11 along the D-D direction.

Figure 13 is the rear view of Figure 10.

Selector valve structural representation when Figure 14 is pressure release.

Figure 15 is the sectional view of Figure 14 along the E-E direction.

Figure 16 is the sectional view of Figure 15 along the F-F direction.

Figure 17 is the rear view of Figure 14.

Embodiment

Embodiment describes in further detail the present invention below in conjunction with accompanying drawing.

Embodiment is with reference to figure 1, Fig. 2, Fig. 3 and shown in Figure 4.

Four-way change-over valve in the present embodiment is made up of valve body 1, mangetic core assembly 2 and commutator 5.

Valve body 1 comprises valve body 11 and the valve gap 12 that is sealed and matched with valve body 11, concrete six the confession screws 8 that pass through are finished, sealing adopts butterfly shape Sealing 9 to finish, valve body 11 is provided with import 111, first outlet 112, second outlet the 113, the 3rd outlet 114 and connects the path of above-mentioned import and export, wherein, the import 111 of valve body 11 and the 3rd outlet 114 and first outlet 112 and second outlet 113 are arranged in valve body 11 both sides in twos.

Mangetic core assembly 2 is three groups, be located at respectively on the path of valve body 11 and with export separately corresponding, it is used for gas-liquid trend in the control access, mangetic core assembly 2 comprises again and is cylindrical spool 21, valve core spring 22, first stuffing box gland 23 and second stuffing box gland 24 that are used for radial seal, the end that spool 21 exposes valve body 11 is hollows, valve core spring 22 is socketed on the spool 21, and the step surface of an end and spool 21 offsets, the other end and valve body 1 inner side step face offset, 22 pairs of spools 21 of valve body spring impose active force, guarantee all the time second stuffing box gland 24 to be remained on sealing state when spool 21 is not subjected to external force, first stuffing box gland 23 is embedded in the spool 21 front end annular grooves 211, remain the radial seal state, and second stuffing box gland 24 is embedded in the spool rearward end annular groove 212.

Commutator 5 is used for rotation and drives spool 21 commutation keyings, commutator 5 rotatably is fixed on the end face of valve body 11 by a compressing tablet 6 and screw 7 surely, and close on the rearward end of spool 21, compressing tablet 6 centers are provided with two protuberances 61, accordingly, the end face of valve body 11 is provided with the caulking groove 115 that cooperates with this protuberance 61 and is suitable for the screw that screw 7 is threaded, with reference to shown in Figure 5, have end cam 51 and end cam 52 near on the commutator front-end face 53 of valve body 1, the surface area of end cam 51 is greater than the surface area of end cam 52, end cam 51 and end cam 52 are provided with around front-end face 53 centers, and have certain intervals, end cam 51 and end cam 52 both sides extend to commutator front-end face 53 from the end cam end face and are slope shape.The effect of end cam 51 and end cam 52 is: actuatable valve core 21 up pushes up during rotation, and spool 21 moves in valve body 1, causes second stuffing box gland, 24 depressurizations, and front-end face 53 extends back and one can be used to rotate the application of force for the rotary part 54 of operation.

With reference to figure 6 to shown in Figure 9, when selector valve is contained in when being used to make coffee on the coffee machine, intake by import, vapour, end cam 51 on the commutator contacts with the spool 21 at first outlet, 112 places, spool 21 moves in valve body 11, and drive first stuffing box glands 23 and second stuffing box gland 24 is synchronized with the movement by spool 21, first stuffing box gland 23 is in sealing state, while second stuffing box gland 24 and valve body 1 depressurization, and other two spools 21 are failure to actuate, and are subjected to the reaction force of valve core spring 22, guarantee that its corresponding outlet is sealing state, so under this state, have only between the import 111 on the valve body 1 and first outlet 112 to keep unimpeded.

With reference to figures 10 to shown in Figure 13, when selector valve is contained in when being used to arrange steam on the coffee machine, intake by import, vapour, end cam 51 on the commutator contacts with the spool 21 at second outlet, 113 places, spool 21 moves in valve body 11, and drive first stuffing box glands 23 and second stuffing box gland 24 is synchronized with the movement by spool 21, first stuffing box gland 23 is in sealing state, while second stuffing box gland 24 and valve body 1 depressurization, and other two spools 21 are failure to actuate, and are subjected to the reaction force of valve core spring 22, guarantee that its corresponding outlet is sealing state, so under this state, have only between the import 111 on the valve body 1 and second outlet 113 to keep unimpeded.

Shown in 17, when selector valve is contained in when being used for pressure release on the coffee machine, intake by import, vapour, end cam 52 on the commutator contacts with the spool 21 at the 3rd outlet 114 places, spool 21 moves in valve body 11, and drive first stuffing box glands 23 and second stuffing box gland 24 is synchronized with the movement by spool 21, first stuffing box gland 23 is in sealing state, while second stuffing box gland 24 and valve body 1 depressurization, and other two spools 21 are failure to actuate, and are subjected to the reaction force of valve core spring 22, guarantee that its corresponding outlet is sealing state, so under this state, have only between import 111 on the valve body 1 and the 3rd outlet 114 to keep unimpeded.

Present embodiment has provided comparatively preferred embodiment, wherein commutator 5 can not rotate by 360 degree, can only in several angle, rotate, use, export 114 spool and control the 3rd with less cam 52 than the spool 21 in large end face cam 51 controls first outlet 112 and second outlet 113.Certainly, also can adopt an end cam to design in the present embodiment, commutator 5 can be used as 360 degree Rotation Design like this, controls three spools 21 with an end cam, thereby reaches the purpose of switched path.

Claims

1, a kind of four-way change-over valve is characterized in that comprising

Valve body (1) which is provided with import (111), first outlet (112), second outlet (113) and the 3rd outlet (114), and valve body (1) inside has the path that connects above-mentioned import and export;

The three groups of mangetic core assemblies (2) that are used for gas-liquid trend in the control access, be located on the path of valve body (1) and corresponding with above-mentioned outlet respectively, mangetic core assembly (2) comprises again and is cylindrical spool (21), valve core spring (22), first stuffing box gland (23) and second stuffing box gland (24), valve core spring (22) is socketed on the aforementioned spool (21), and the step surface of an end and aforementioned spool (21) offsets, the other end and valve body (1) inner side step face offsets, first stuffing box gland (23) is embedded in aforementioned spool (21) the front end annular groove (211), and second stuffing box gland (24) is embedded in aforementioned spool (21) the rearward end annular groove (212); And

Be used for rotation and drive the commutator (5) that spool (21) commutation opens and closes, rotatably be located on valve body (1) end face and and close on the rearward end of aforementioned spool (21), the end cam (51) that actuatable valve core (21) moves when having rotation on the close commutator front-end face (53) of valve body (1), front-end face (53) extend back one can for the operation rotary part (54)

During commutator (5) rotation, the end cam (51) of front-end face (53) drives one of them spool (21) and moves in valve body (1), corresponding path depressurization, and other two spools (21) maintain the original state, and are in closed state.

2, four-way change-over valve according to claim 1, it is characterized in that described valve body (1) comprises valve body (11) and the valve gap (12) that is sealed and matched with valve body (11), this valve body (11) is provided with described import (111), first outlet (112), second outlet (113) and the 3rd outlet (114), and described mangetic core assembly (2) is located on the path of valve body (11).

3, four-way change-over valve according to claim 2 is characterized in that import (111), first outlet (112), second outlet (113) and the 3rd outlet (114) of described valve body (11) is arranged in valve body (11) both sides in twos.

4, four-way change-over valve according to claim 1, it is characterized in that described commutator (5) rotatably is fixed on the end face of valve body (1) by a compressing tablet (6) and screw (7) surely, accordingly, valve body (1) is provided with and is suitable for the screw that aforementioned screw (7) is threaded.

5, four-way change-over valve according to claim 1 is characterized in that described end cam (51,52) is two, and is provided with around front-end face (53) center, and has certain intervals.

6, four-way change-over valve according to claim 5, it is characterized in that described spool (21) exposes valve body (1) and end cam (51,52) Jie Chu a end is hollows, accordingly, described end cam (51,52) both sides extend to commutator front-end face (53) from end cam (51,52) end face and are slope shape.