CN217898964U

CN217898964U - Four-way valve

Info

Publication number: CN217898964U
Application number: CN202122384863.1U
Authority: CN
Inventors: 张飞; 杜飞龙
Original assignee: Zhejiang Dunan Artificial Environment Co Ltd
Current assignee: Zhejiang Dunan Artificial Environment Co Ltd
Priority date: 2021-09-28
Filing date: 2021-09-28
Publication date: 2022-11-25
Anticipated expiration: 2031-09-28

Abstract

The utility model provides a four-way valve, include: a pilot valve; the main valve, the sidewall of the main valve has mounting holes; the connecting pipe, at least one part of the connecting pipe is set in the mounting hole; long capillary, long capillary includes interconnect's first pipeline section and second pipeline section, the contained angle has between first pipeline section and the second pipeline section, the one end and the pilot valve of first pipeline section are connected, the one end and the connecting pipe welding of second pipeline section, the angle between the axis of connecting pipe and the axis of second pipeline section is A,1 ≦ A ≦ 5, in this scheme, when welding long capillary's second pipeline section and connecting pipe, through the injecing to angle A, make the second pipeline section insert and formed certain frictional force behind the connecting pipe, and the bending type stress release that the second pipeline section that has reduced long capillary produced when the welding is heated, prevent that long capillary's second pipeline section from taking place to kick-back in welding process, avoid long capillary to take place to weld stifled.

Description

Four-way valve

Technical Field

The utility model relates to a cross valve technical field particularly, relates to a cross valve.

Background

At present, a long capillary tube and a main valve are generally welded together through a connecting tube, a side wall of the main valve is provided with a mounting hole, at least one part of the connecting tube is arranged in the mounting hole, and one end of the long capillary tube extends into the connecting tube and is welded with the connecting tube.

The first pipe section and the second pipe section of the conventional long capillary bending type are perpendicular to each other, when the capillary pipe of the structure is inserted into the connecting pipe for welding, the long capillary bending type stress release can be generated, the long capillary pipe rebounds, the distance of the long capillary pipe inserted into the connecting pipe is shortened, the welding wire feeding amount is unchanged, the welding material at the welding position is excessive, and the risk of welding and blocking the long capillary pipe is caused.

SUMMERY OF THE UTILITY MODEL

The utility model provides a cross valve to solve among the prior art long capillary welding resilience of cross valve, lead to long capillary to weld stifled problem.

In order to solve the problem, the utility model provides a four-way valve, include: a pilot valve; the main valve, the sidewall of the main valve has mounting holes; the connecting pipe, at least one part of the connecting pipe is set in the mounting hole; the long capillary comprises a first pipe section and a second pipe section which are connected with each other, an included angle is formed between the first pipe section and the second pipe section, one end of the first pipe section is connected with the pilot valve, one end of the second pipe section is welded with the connecting pipe, the angle between the axis of the connecting pipe and the axis of the second pipe section is A, and A is larger than or equal to 1 degree and smaller than or equal to 5 degrees.

Furthermore, the length of the connecting pipe is L, the length of the long capillary inserted into the connecting pipe is E, and E is less than or equal to L.

Furthermore, the main valve comprises a valve body and an annular flange, the inner wall of the annular flange is connected with the inner wall of the valve body, the outer wall of the annular flange is connected with the outer wall of the valve body, a hole in the annular flange is a mounting hole, the mounting hole is communicated with the cavity of the valve body, and one end of the connecting pipe is arranged in the annular flange in a penetrating mode.

Furthermore, the length of the annular flanging protruding out of the side wall of the valve body is C which is more than or equal to 0.7mm and less than or equal to 0.8mm, the length of one end of the connecting pipe penetrating into the mounting hole is D which is more than or equal to 1.0mm and less than or equal to 1.6mm.

Furthermore, annular turn-ups, connecting pipe and long capillary are two, and two annular turn-ups set up respectively at the both ends of valve body, and the one end of two connecting pipes corresponds the setting respectively in two annular turn-ups, and the one end of two long capillaries all is connected with the pilot valve, and the other end of two long capillaries welds with two connecting pipes respectively.

Furthermore, the outer diameter of the long capillary tube is d, the joint of the first tube section and the second tube section is a bending section, the radius of the inner circular arc of the bending section is R, and R is larger than or equal to 2d.

Further, at least a part of the first pipe section is an arch section, and the arch direction of the arch section faces the main valve.

Further, the four-way valve further comprises an E connection pipe, a C connection pipe, an S connection pipe and a D connection pipe which are communicated with the cavity of the main valve, the four-way valve further comprises an S capillary pipe and a D capillary pipe, one end of the S capillary pipe and one end of the D capillary pipe are both connected with the pilot valve, the other end of the S capillary pipe is connected with the S connection pipe, and the other end of the D capillary pipe is connected with the D connection pipe.

Furthermore, the axis of the S connecting pipe, the axis of the C connecting pipe and the axis of the E connecting pipe are arranged on the same plane in parallel, the S connecting pipe, the C connecting pipe and the E connecting pipe are all arranged on the same side of the main valve, and the length of the S connecting pipe is greater than that of the C connecting pipe and that of the E connecting pipe.

Further, the four-way valve further comprises a sliding block, and the sliding block is movably arranged in the cavity of the main valve to communicate at least two of the connection pipe E, the connection pipe S and the connection pipe C.

Use the technical scheme of the utility model, a cross valve is provided, include: a pilot valve; the main valve is provided with a mounting hole on the side wall; the connecting pipe, at least a part of the connecting pipe is set in the mounting hole; the long capillary comprises a first pipe section and a second pipe section which are connected with each other, an included angle is formed between the first pipe section and the second pipe section, one end of the first pipe section is connected with the pilot valve, one end of the second pipe section is welded with the connecting pipe, the angle between the axis of the connecting pipe and the axis of the second pipe section is A, and A is larger than or equal to 1 degree and smaller than or equal to 5 degrees. By adopting the scheme, when the second pipe section of the long capillary pipe is welded with the connecting pipe, the angle A is limited, so that the second pipe section forms a certain friction force after being inserted into the connecting pipe, the resilience resistance of the long capillary pipe is increased, and the resilience of the long capillary pipe is prevented; and the angle A is limited, the bending stress release generated when the second pipe section of the long capillary is welded and heated is reduced, the second pipe section of the long capillary is further prevented from rebounding in the welding process, the distance that the second pipe section of the long capillary is inserted into the connecting pipe is ensured to be unchanged, the condition that welding solders enter the long capillary due to the fact that the distance that the second pipe section is inserted into the connecting pipe is reduced is further prevented, welding blockage of the long capillary is avoided, and the reliability of the four-way valve is improved.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows a schematic structural diagram of a four-way valve provided in an embodiment of the present invention;

FIG. 2 shows an enlarged view of selected locations of the four-way valve of FIG. 1;

FIG. 3 shows a side view of the four-way valve of FIG. 1.

Wherein the figures include the following reference numerals:

10. a pilot valve; 20. a main valve; 21. a valve body; 22. annular flanging; 23. mounting holes; 30. a connecting pipe; 41. a long capillary tube; 411. a first tube section; 412. a second tube section; 42. an S capillary tube; 43. a capillary tube D; 51. e, taking over a pipe; 52. c, taking over a pipe; 53. s, taking over a pipe; 54. and D, taking over.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.

As shown in fig. 1 to 3, an embodiment of the utility model provides a four-way valve, include: a pilot valve 10; a main valve 20, a sidewall of the main valve 20 having a mounting hole 23; a connection pipe 30, at least a portion of the connection pipe 30 being disposed in the mounting hole 23; the long capillary 41 comprises a first pipe section 411 and a second pipe section 412 which are connected with each other, an included angle is formed between the first pipe section 411 and the second pipe section 412, one end of the first pipe section 411 is connected with the pilot valve 10, one end of the second pipe section 412 is welded with the connecting pipe 30, the angle between the axis of the connecting pipe 30 and the axis of the second pipe section 412 is A, and A is larger than or equal to 1 degree and smaller than or equal to 5 degrees.

In this embodiment, when the second pipe section 412 of the long capillary 41 and the connecting pipe are welded, the angle a is limited, so that the second pipe section 412 forms a certain friction force after being inserted into the connecting pipe 30, and the resilience resistance of the long capillary 41 is increased, thereby preventing the long capillary 41 from resilience; and the angle A is limited, so that the bending stress release generated when the second pipe section 412 of the long capillary 41 is welded and heated is reduced, the springback of the second pipe section 412 of the long capillary 41 in the welding process is further prevented, the distance that the second pipe section 412 of the long capillary 41 is inserted into the connecting pipe 30 is ensured to be unchanged, the condition that the welding solder enters the long capillary 41 due to the fact that the distance that the second pipe section 412 is inserted into the connecting pipe 30 is reduced is further prevented, the welding blockage of the long capillary 41 is avoided, and the reliability of the four-way valve is improved.

Specifically, the connecting position of the first pipe section 411 and the second pipe section 412 is a bending section, and the stress generated by the bending section is bending type stress.

As shown in FIG. 2, the length of the connection pipe 30 is L, the length of the long capillary 41 inserted into the connection pipe 30 is E, and E is less than or equal to L. By the arrangement, the length of the long capillary 41 inserted into the connecting pipe 30 is not more than the length of the connecting pipe 30, so that the long capillary 41 is prevented from penetrating through the connecting pipe 30 and entering the cavity of the main valve 20, interference between the long capillary 41 and other structures in the cavity is avoided or fluid circulation in the cavity is influenced, and the reliability of the four-way valve is ensured.

As shown in fig. 1, the main valve 20 includes a valve body 21 and an annular flange 22, an inner wall of the annular flange 22 is connected to an inner wall of the valve body 21, an outer wall of the annular flange 22 is connected to an outer wall of the valve body 21, a hole in the annular flange 22 is a mounting hole 23, the mounting hole 23 is communicated with a cavity of the valve body 21, and one end of the connecting pipe 30 is inserted into the annular flange 22.

With such an arrangement, compared with the prior art in which the connecting pipe 30 is directly installed and the hole is opened on the side wall of the valve body 21, the connecting length of the connecting pipe 30 is increased by providing the annular flange 22, and the reliability of connection is ensured.

Specifically, the inner wall of the annular flange 22 is the cylindrical hole surface in limit fit with the connecting pipe 30.

As shown in FIG. 2, the length of the annular flange 22 protruding out of the side wall of the valve body 21 is C, C is more than or equal to 0.7mm and less than or equal to 0.8mm, the length of one end of the connecting pipe 30 penetrating into the mounting hole 23 is D, and D is more than or equal to 1.0mm and less than or equal to 1.6mm.

By the arrangement, one end of the connecting pipe 30 penetrating into the mounting hole 23 cannot enter the cavity of the valve body 21, interference between the connecting pipe 30 and other structures inside the cavity of the valve body 21 is prevented, or interference caused by the end of the connecting pipe 30 entering the cavity of the valve body 21 on flowing of fluid in the cavity is prevented, and reliability of the four-way valve is improved.

Specifically, the side wall of the valve body 21 is 0.8mm, the length C of the annular flange 22 protruding out of the side wall of the valve body 21 is limited, and the annular flange 22 is prevented from protruding too high to cause cracking. The length D of the connecting pipe 30 penetrating into the annular flange 22 is smaller than the sum of the length C of the annular flange 22 protruding out of the side wall of the valve body 21 and the wall thickness of the side wall of the valve body 21.

As shown in fig. 1 and fig. 3, the annular flanging 22, the connecting pipes 30 and the long capillary 41 are two, the two annular flanging 22 are respectively disposed at two ends of the valve body 21, one end of each of the two connecting pipes 30 is correspondingly disposed in the two annular flanging 22, one end of each of the two long capillaries 41 is connected to the pilot valve 10, and the other end of each of the two long capillaries 41 is welded to the two connecting pipes 30.

In this embodiment, long capillary 41 is two, and the annular turn-ups 22 and the connecting pipe 30 that correspond also are two, and two sets of long capillary 41, annular turn-ups 22 and connecting pipe 30 symmetry set up, and the qualification homonymy is the same to the qualification, sets up like this, has reduced the processing cost of cross valve, has improved the production efficiency of cross valve.

As shown in FIG. 2, the outer diameter of the long capillary 41 is d, the joint of the first tube segment 411 and the second tube segment 412 is a curved segment, the radius of the inner circular arc of the curved segment is R, and R ≧ 2d.

With the arrangement, the bending section at the joint of the first pipe section 411 and the second pipe section 412 is prevented from being bent, so that the flow capacity of the long capillary 41 is reduced or the long capillary 41 is damaged, and the reliability of the four-way valve is ensured.

Specifically, the axis of the mounting hole 23 and the axis of the main valve 20 are on the same plane of projection plane, the curved section has a certain thickness, the curved section includes a large curved radius and a small curved radius, and the inner circular radius is the minimum curved radius of the upper half diameter of the curved section.

Further, at least a part of the first pipe section 411 is an arch-shaped section, the arch direction of which is towards the main valve 20. Specifically, the arcuate segment is formed for a reason related to angle A. When the included angle between the first pipe section 411 and the second pipe section 412 is a right angle, the first pipe section 411 and the second pipe section 412 are perpendicular to each other; when the second pipe section 412 is disposed in an inclined manner, that is, the axis of the second pipe section 412 forms an angle a with the axis of the connection pipe 30, the first pipe section 411 connected to the second pipe section 412 moves in the inclined direction of the second pipe section 412, but the connection position of the other end of the first pipe section 411 is unchanged, which results in that the distance between the connection position of the first pipe section 411 and the second pipe section 412 and the connection position of the other end of the first pipe section 411 is reduced, but the overall length of the first pipe section 411 is unchanged, thereby forming an arched section. By providing the arch section, the structural strength of the long capillary 41 can be increased, and the deformation can be reduced.

Specifically, the four-way valve further includes an E connection pipe 51, a C connection pipe 52, an S connection pipe 53, and a D connection pipe 54 which are communicated with the cavity of the main valve 20, the four-way valve further includes an S capillary tube 42 and a D capillary tube 43, one end of each of the S capillary tube 42 and the D capillary tube 43 is connected to the pilot valve 10, the other end of the S capillary tube 42 is connected to the S connection pipe 53, and the other end of the D capillary tube 43 is connected to the D connection pipe 54. In this way, the pilot valve 10 adjusts the pressure in the main valve 20 by the long capillary 41, the S capillary 42, and the D capillary 43, so that the communication conditions of the E connection pipe 51, the C connection pipe 52, the S connection pipe 53, and the D connection pipe 54 are adjusted, and the adjustment mode is simple and reliable.

Further, the axis of the S connection pipe 53, the axis of the C connection pipe 52, and the axis of the E connection pipe 51 are disposed in parallel on the same plane, the S connection pipe 53, the C connection pipe 52, and the E connection pipe 51 are all disposed on the same side of the main valve 20, and the length of the S connection pipe 53 is greater than the length of the C connection pipe 52 and the length of the E connection pipe 51. By the arrangement, the installation positions of the S connecting pipe 53, the C connecting pipe 52 and the E connecting pipe 51 are determined, interference among the S connecting pipe 53, the C connecting pipe 52 and the E connecting pipe 51 is avoided, or interference among the three connecting pipes and other structures is avoided, and the reliability of the four-way valve is ensured.

Specifically, the four-way valve further includes a slider movably disposed in the cavity of the main valve 20 to communicate at least two of the E connection pipe 51, the S connection pipe 53, and the C connection pipe 52. The arrangement is that the connection condition of the E connecting pipe 51, the S connecting pipe 53 and the C connecting pipe 52 is controlled and adjusted through the slide block, so that the adjustment is quick and reliable, and the operation is convenient.

Specifically, the pilot valve 10 connected to the main valve 20 controls the movement of the slider by controlling the plurality of capillary tubes to adjust the pressure in the main valve 20, thereby controlling the communication among the E connection pipe 51, the S connection pipe 53, and the C connection pipe 52.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A four-way valve, comprising:

a pilot valve (10);

a main valve (20), a side wall of the main valve (20) having a mounting hole (23);

a connection pipe (30), at least a portion of the connection pipe (30) being disposed within the mounting hole (23);

the long capillary tube (41) comprises a first tube section (411) and a second tube section (412) which are connected with each other, an included angle is formed between the first tube section (411) and the second tube section (412), one end of the first tube section (411) is connected with the pilot valve (10), one end of the second tube section (412) is welded with the connecting tube (30), the angle between the axis of the connecting tube (30) and the axis of the second tube section (412) is A, and A is more than or equal to 1 degree and less than or equal to 5 degrees.

2. The four-way valve according to claim 1, wherein the length of the connection pipe (30) is L, the length of the long capillary (41) inserted into the connection pipe (30) is E, and E is less than or equal to L.

3. The four-way valve of claim 1,

the main valve (20) comprises a valve body (21) and an annular flange (22), the inner wall of the annular flange (22) is connected with the inner wall of the valve body (21), the outer wall of the annular flange (22) is connected with the outer wall of the valve body (21), a hole in the annular flange (22) is a mounting hole (23), the mounting hole (23) is communicated with the cavity of the valve body (21), and one end of the connecting pipe (30) is arranged in the annular flange (22) in a penetrating mode.

4. The four-way valve according to claim 3, wherein the length of the annular flanging (22) protruding out of the outer wall of the valve body (21) is C, C is more than or equal to 0.7mm and less than or equal to 0.8mm, the length of one end of the connecting pipe (30) penetrating into the mounting hole (23) is D, and D is more than or equal to 1.0mm and less than or equal to 1.6mm.

5. The four-way valve according to claim 3, wherein the number of the annular flanges (22), the connecting pipes (30) and the long capillary tubes (41) is two, the two annular flanges (22) are respectively arranged at two ends of the valve body (21), one ends of the two connecting pipes (30) are respectively and correspondingly arranged in the two annular flanges (22), one ends of the two long capillary tubes (41) are both connected with the pilot valve (10), and the other ends of the two long capillary tubes (41) are respectively welded with the two connecting pipes (30).

6. The four-way valve according to claim 1, wherein the outer diameter of the long capillary tube (41) is d, the joint of the first tube section (411) and the second tube section (412) is a curved section, the radius of the inner circular arc of the curved section is R, and R is larger than or equal to 2d.

7. The four-way valve of claim 1,

at least a part of the first pipe section (411) is an arch-shaped section, the arch direction of which faces the main valve (20).

8. The four-way valve according to claim 1, further comprising an E connection pipe (51), a C connection pipe (52), an S connection pipe (53), and a D connection pipe (54) communicating with the cavity of the main valve (20), and further comprising an S capillary pipe (42) and a D capillary pipe (43), wherein one end of each of the S capillary pipe (42) and the D capillary pipe (43) is connected to the pilot valve (10), the other end of the S capillary pipe (42) is connected to the S connection pipe (53), and the other end of the D capillary pipe (43) is connected to the D connection pipe (54).

9. Four-way valve according to claim 8, wherein the axis of the S-connection (53), the axis of the C-connection (52) and the axis of the E-connection (51) are arranged in parallel on the same plane, the S-connection (53), the C-connection (52) and the E-connection (51) are all arranged on the same side of the main valve (20), and the length of the S-connection (53) is greater than the length of the C-connection (52) and the length of the E-connection (51).

10. The four-way valve of claim 8,

the four-way valve further comprises a slider movably disposed in a cavity of the main valve (20) to communicate at least two of the E connection pipe (51), the S connection pipe (53), and the C connection pipe (52).