CN217207955U - Sealing connection structure and four-way valve - Google Patents

Abstract

The embodiment of the utility model discloses a sealing connection structure and four-way valve, the sealing connection structure includes the joint and the sealing member, the joint includes the first screw thread portion and the second screw thread portion, the first screw thread portion is used for connecting with the end cover screw thread, the second screw thread portion is used for connecting with the signal pipe screw thread; a seal is sealed between the fitting and the end cap. The utility model discloses sealing connection structure, joint adopt threaded connection with end cover and signal pipe respectively to still be equipped with the sealing member between joint and end cover, make the sealing member realize sealedly between joint and end cover, further promoted the reliability sealed between joint and the end cover, effectively solved the problem that the refrigerant leaked.

Description

Sealing connection structure and four-way valve

Technical Field

The utility model relates to a valve structure technical field particularly, relates to a sealing connection structure and cross valve.

Background

The four-way valve is widely applied to an air conditioning system and comprises a main valve body and a pilot valve, wherein end covers are arranged at two ends of the main valve body. The pilot valve is connected with the end cover through a signal tube. However, in the related art, the signal tube and the end cover are connected and sealed by adopting the joint and the end cover to be directly screwed and locked, and sealing is realized by the sealant, but due to the processing problem of the joint or the end cover and the use timeliness problem of the sealant, sealing failure often occurs in the practical application process, the problem of leakage of the hollow refrigerant during the use process exists, and the normal use of a user is influenced.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a can improve the sealing connection structure and the cross valve of leakproofness between signal pipe and the end cover.

The sealing connection structure provided by the embodiment of the utility model is applied to a four-way valve and is used for connecting a signal pipe and an end cover of the four-way valve, the sealing connection structure comprises a joint and a sealing element, the joint comprises a first thread part and a second thread part, the first thread part is used for being in threaded connection with the end cover, and the second thread part is used for being in threaded connection with the signal pipe; a seal is sealed between the fitting and the end cap.

According to some embodiments of the invention, the joint and/or the end cap has a groove, the sealing member being arranged in the groove.

According to some embodiments of the invention, the joint further comprises an intermediate portion disposed between the first threaded portion and the second threaded portion;

the middle part comprises a first end face and a second end face which are arranged oppositely and a side face which is connected with the first end face and the second end face, the first thread part is convexly arranged on the first end face, the second thread part is convexly arranged on the second end face, and the first end face is used for abutting against the end cover.

According to some embodiments of the invention, the groove opens at the first end face of the intermediate portion; and/or the presence of a gas in the gas,

the groove is formed in one side surface, facing the joint, of the end cover.

According to some embodiments of the invention, the groove is annular and the sealing element is annular;

an orthographic projection of the first threaded portion on the first end face is located inside the groove.

According to some embodiments of the invention, the first end surface is circular in shape.

According to some embodiments of the invention, the end cap has a bore extending through opposite sides thereof, an inner wall surface of the bore having an internal thread structure;

the first thread part is provided with an external thread structure in threaded fit with the internal thread structure, and the groove is formed in the periphery of the first thread part.

According to some embodiments of the present invention, the end cap has a through-hole passing through opposite side surfaces thereof, an inner wall surface of the through-hole having an internal thread structure;

the first thread part is provided with an external thread structure in threaded fit with the internal thread structure, and the groove is formed in the hole wall of the through hole.

According to some embodiments of the invention, the intermediate portion is hexagonal prism shaped, the first end face is a bottom face of the intermediate portion, and the second end face is a top face of the intermediate portion; the joint has a through hole penetrating the first threaded portion, the intermediate portion, and the second threaded portion, the through hole communicating with the signal pipe.

According to some embodiments of the invention, the signal pipe is screwed to the second threaded portion through a nut.

The utility model discloses cross valve, including above-mentioned arbitrary sealing connection structure.

An embodiment of the above utility model has at least the following advantages or beneficial effects:

the utility model discloses sealing connection structure, joint adopt threaded connection with end cover and signal pipe respectively to still be equipped with the sealing member between joint and end cover, make the sealing member realize sealedly between joint and end cover, further promoted the reliability sealed between joint and the end cover, effectively solved the problem that the refrigerant leaked.

Drawings

Fig. 1 shows a schematic diagram of a four-way valve according to an embodiment of the present invention.

Fig. 2 shows a top view of the four-way valve according to the embodiment of the present invention.

Fig. 3 shows a cross-sectional view of a joint according to an embodiment of the invention.

Fig. 4 is a cross-sectional view of the joint and the end cap after being screwed together according to the embodiment of the present invention.

Fig. 5 is a cross-sectional view showing the connection between the joint and the end cap when the groove of the present invention is provided in the end cap.

Fig. 6 is a cross-sectional view showing the connection between the joint and the end cap when the groove of the present invention is formed in the first threaded portion.

Fig. 7 shows a cross-sectional view of the connection between the joint and the end cap when the groove of the present invention is disposed in the through hole of the end cap.

Wherein the reference numerals are as follows:

100. four-way valve

1. Main valve body

11. Barrel body

111. Connecting pipe

12. End cap

121. Perforation

2. Guide valve

3. Joint

31. First screw thread part

32. Intermediate section

321. First end face

322. Side surface

323. Second end face

324. Gap

33. Second screw part

34. Groove

35. Through hole

4. Signal tube

5. Sealing element

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed description will be omitted.

As shown in fig. 1 and fig. 2, fig. 1 is a schematic diagram of a four-way valve 100 according to an embodiment of the present invention. Fig. 2 is a top view of the four-way valve 100 according to the embodiment of the present invention. The utility model discloses cross valve 100 includes the main valve body 1 and pilot valve 2, and pilot valve 2 passes through signal pipe 4 and is connected with the main valve body 1. The main valve body 1 comprises a cylinder body 11 and end covers 12, and the two ends of the cylinder body 11 are respectively covered with the end covers 12. The end cap 12 and the cylinder 11 may be connected by bolts, but not limited thereto.

It is to be understood that the terms "comprises" and "comprising," and any variations thereof, in the embodiments of the present invention, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or may alternatively include other steps or elements inherent to such process, method, article, or apparatus.

The periphery of barrel 11 is equipped with a plurality of takeovers 111, and a plurality of takeovers 111 communicate with the inner chamber of barrel 11 respectively. In the present embodiment, the number of the adapter tubes 111 is four, and the adapter tubes are uniformly arranged along the outer circumference of the cylinder 11 to form a cross shape, but not limited thereto.

The pilot valve 2 is connected via a signal line 4 to a cover 12 of the main valve body 1, so that via the cover 12 the signal line 4 can communicate with the interior of the main valve body 1. In the present embodiment, the pilot valve 2 is connected to the two end caps 12 of the main valve body 1 through the two signal pipes 4, respectively.

As shown in fig. 3 and 4, fig. 3 is a cross-sectional view of a joint 3 according to an embodiment of the present invention. Fig. 4 is a cross-sectional view of the joint 3 and the end cap 12 after being screwed according to the embodiment of the present invention. As described in the background art, the connection between the signal tube and the end cap in the related art is not good in sealing performance, and the problem of leakage of the refrigerant in the main valve body is likely to occur. The utility model discloses sealing connection structure is applied to cross valve 100 for connect the signal pipe 4 and the end cover 12 of cross valve 100, can ensure the leakproofness between signal pipe 4 and the end cover 12 like this, avoid the refrigerant in the main valve body 1 to leak.

The utility model discloses sealing connection structure includes joint 3 and sealing member 5, and joint 3 includes first screw thread portion 31 and second screw thread portion 33, and first screw thread portion 31 is used for with end cover 12 threaded connection, and second screw thread portion 33 is used for with signal pipe 4 threaded connection. The seal 5 seals between the joint 3 and the end cap 12.

That is, in the present embodiment, each signal pipe 4 is connected to the end cap 12 of the main valve body 1 through the joint 3. Also, a seal 5 is provided between each joint 3 and the end cap 12.

The utility model discloses sealing connection structure, joint 3 adopt threaded connection with end cover 12 and signal pipe 4 respectively to still be equipped with sealing member 5 between joint 3 and end cover 12, make sealing member 5 realize sealedly between joint 3 and end cover 12, further promoted the reliability of sealing between joint 3 and the end cover 12, effectively solved the problem that the refrigerant leaked.

The joint 3 further comprises an intermediate portion 32, the intermediate portion 32 being arranged between the first threaded portion 31 and the second threaded portion 33. The middle portion 32 includes a first end face 321, a second end face 323, and a side face 322 connecting the first end face 321 and the second end face 323, the first end face 321 and the second end face 323 are disposed opposite to each other, the first threaded portion 31 is disposed in a protruding manner on the first end face 321, the second threaded portion 33 is disposed in a protruding manner on the second end face 323, and the first end face 321 is configured to abut against the end cover 12.

The first and second screw parts 31 and 33 may each have an external thread. The end cap 12 has a through hole 121 penetrating through opposite side surfaces 322 thereof, and an inner wall surface of the through hole 121 has an internal thread structure, and the through hole 121 communicates with an inner cavity of the main valve body 1. When the signal pipe 4, the joint 3 and the end cap 12 are connected, the joint 3 is screwed with the internal thread structure of the through hole 121 of the end cap 12 by the first screw part 31, and the signal pipe 4 is screwed with the second screw part 33. As an example, as shown in fig. 1 and 2, the signal pipe 4 may be screwed to the second screw part 33 in the following manner: one end of the signal tube 4 connected with the joint 3 is flared and movably arranged in the nut, and the nut is in threaded connection with the second thread part 33 of the joint 3.

It will be appreciated that the internal thread formation of the inner wall surface of the bore 121 may cover the entire axial length of the bore 121, i.e., both ends of the internal thread formation extend to the respective side surfaces 322 of the end cap 12. Of course, the internal thread structure may also cover only the inner wall surface of the portion of the penetration hole 121 in the axial direction.

The joint 3 has a through hole 35 penetrating the first threaded portion 31, the intermediate portion 32, and the second threaded portion 33, and the through hole 35 communicates with the signal pipe 4 and the inner cavity of the main valve body 1. That is, the signal pipe 4 communicates with the inner cavity of the main valve body 1 through the joint 3.

The fitting 3 and/or the end cap 12 have a groove 34, and the seal 5 is disposed in the groove 34. For example, the fitting 3 may be provided with a recess 34, or the end cap 12 may be provided with a recess 34, or both the fitting 3 and the end cap 12 may be provided with recesses 34.

In this embodiment, the groove 34 is provided on the joint 3. Specifically, the groove 34 opens at the first end face 321 of the intermediate portion 32 of the joint 3. The first thread part 31 of the joint 3 is connected and fastened with the internal thread structure of the through hole 121 of the end cap 12, and the first end face 321 is arranged opposite to the end cap 12. Seal 5 is disposed within groove 34 and between intermediate portion 32 and end cap 12. As the first threaded portion 31 becomes progressively tightened against the internal thread formation of the bore 121, the first end face 321 abuts the end cap 12 and the seal 5 is sandwiched between the intermediate portion 32 and the end cap 12, providing a static seal.

The groove 34 and the seal 5 are both annular. An orthogonal projection of the first threaded portion 31 on the first end face 321 is located inside the groove 34.

In the embodiment, the sealing member 5 surrounds the outer periphery of the first threaded portion 31, and when the first threaded portion 31 is screwed with the end cap 12, 360-degree sealing can be achieved.

In one embodiment, the seal 5 may be an O-ring, a Y-ring, or the like.

The junction between the first end 321 and the side 322 of the middle portion 32 further has a notch 324, and the notch 324 is annular, so that the first end 321 is circular. By designing the first end surface 321 to be circular, the processing burr of the intermediate portion 32 can be reduced as much as possible, and the adhesion between the first end surface 321 and the end cap 12 can be enhanced to ensure the sealing property.

The intermediate portion 32 has a hexagonal prism shape with a through hole in the axial direction, i.e., in a cross section perpendicular to the axial direction, the side surfaces 322 are formed in a hexagonal shape, which facilitates the operator's handling of the joint 3 and facilitates the attachment of the first threaded portion 31 to the end cap 12. The first end surface 321 is a bottom surface of a hexagonal prism, and the second end surface 323 is a top surface of the hexagonal prism.

The utility model discloses sealing connection structure still includes sealed glue (not shown in the figure), and sealed glue coating is between joint 3 and end cover 12.

As an example, a sealant is coated between the first threaded portion 31 of the joint 3 and the penetration hole 121 of the end cap 12.

Of course, in other embodiments, sealant can be applied between the intermediate portion 32 and the end cap 12, such as between the first end 321 of the intermediate portion 32 and the end cap 12, and/or between the side 322 of the intermediate portion 32 and the end cap 12.

In one embodiment, the sealant may be a screw locking sealant, but is not limited thereto.

As shown in fig. 5, fig. 5 is a cross-sectional view of the joint 3 and the end cap 12 when the groove 34 of the present invention is disposed on the end cap 12. The sealing connection structure of the present embodiment is the same as the above embodiments and is not described again, but the differences are as follows: a groove 34 is provided in the end cap 12.

Specifically, as an example, the end cap 12 is provided with a groove 34 on a side thereof facing the intermediate portion 32 of the joint 3, and the seal 5 is disposed in the groove 34. When the first threaded portion 31 of the joint 3 is screwed into the through hole 121 of the end cap 12, the first end face 321 is disposed opposite to the end cap 12. Seal 5 is disposed within groove 34 and between intermediate portion 32 and end cap 12. As the first threaded portion 31 is progressively locked with the through hole 121, the first end face 321 abuts the end cap 12, and the seal 5 is sandwiched between the intermediate portion 32 and the end cap 12, achieving a static seal.

As shown in fig. 6, fig. 6 is a cross-sectional view of the joint 3 and the end cap 12 when the groove 34 of the present invention is disposed on the first threaded portion 31. The sealing connection structure of this embodiment is the same as that of the above embodiments, and the differences are as follows: the groove 34 is provided at the outer periphery of the first screw part 31.

Specifically, as an example, the groove 34 is opened on the outer periphery of the first threaded portion 31. The groove 34 may have a ring shape and surround the outer circumference of the first screw part 31. When the first threaded portion 31 of the joint 3 is screwed into the through hole 121 of the end cap 12, the sealing member 5 is located between the first threaded portion 31 and the wall of the through hole 121. As the first threaded portion 31 is gradually locked with the through hole 121, the sealing member 5 is interposed between the first threaded portion 31 and the hole wall of the through hole 121, and static sealing is achieved.

As shown in fig. 7, fig. 7 is a cross-sectional view of the joint 3 and the end cap 12 when the groove 34 of the present invention is disposed in the through hole 121 of the end cap 12. The sealing connection structure of the present embodiment is the same as the above embodiments and is not described again, but the differences are as follows: the groove 34 is arranged on the hole wall of the through hole 121 of the end cover 12, that is, the groove 34 is arranged on the end cover 12, the notch of the groove 34 is positioned on the hole wall of the through hole 121, and the groove 34 is in a ring shape matched with the sealing element 5.

When the first threaded portion 31 of the joint 3 is screwed into the through hole 121 of the end cap 12, the sealing member 5 is located between the first threaded portion 31 and the wall of the through hole 121. As the first threaded portion 31 is gradually locked with the through hole 121, the sealing member 5 is interposed between the first threaded portion 31 and the hole wall of the through hole 121, and static sealing is achieved.

It is understood that in each of the above embodiments, the number of the sealing member 5 may be one or more. When the number of the sealing members 5 is plural, the plural grooves 34 corresponding to the plural sealing members 5 may be provided in one of the intermediate portion 32, the first screw portion 31, and the end cap 12, or may be provided in two or more of the intermediate portion 32, the first screw portion 31, and the end cap 12, respectively.

For example, when the sealing members 5 are two, two grooves 34 corresponding to the two sealing members 5 may be provided at the first end face 321 of the intermediate portion 32. The two grooves 34 may each be annular and arranged in concentric circles. Of course, both grooves 34 may be provided on the end cap 12 or the first threaded portion 31.

Further, one of the two grooves 34 may be provided on the first end face 321 of the intermediate portion 32, and the other groove 34 may be provided on the first end face 321 of the intermediate portion 32, the first threaded portion 31, or the end cap 12.

It is understood that the various embodiments/implementations provided by the present invention can be combined without contradiction, and are not illustrated herein.

In the embodiments of the present invention, the terms "first", "second", "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless expressly limited otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meaning of the above terms in the embodiments of the present invention can be understood by those skilled in the art according to specific situations.

In the description of the embodiments of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the device or unit indicated must have a specific direction, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the embodiments of the present invention.

In the description of the present specification, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of an embodiment of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

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 to the present invention by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the embodiments of the present invention should be included in the scope of the embodiments of the present invention.

Claims (11)

1. A sealing connection structure applied to a four-way valve for connecting a signal pipe and an end cover of the four-way valve, the sealing connection structure comprising:

the connector comprises a first threaded part and a second threaded part, the first threaded part is used for being in threaded connection with the end cover, and the second threaded part is used for being in threaded connection with the signal pipe; and

a seal sealed between the fitting and the end cap.

2. The sealing connection of claim 1, wherein the fitting and/or the end cap has a groove, the seal being disposed within the groove.

3. The sealed connection of claim 2, wherein the fitting further comprises an intermediate portion disposed between the first threaded portion and the second threaded portion;

the middle part comprises a first end face and a second end face which are arranged oppositely and a side face which is connected with the first end face and the second end face, the first thread part is convexly arranged on the first end face, the second thread part is convexly arranged on the second end face, and the first end face is used for abutting against the end cover.

4. The sealed connection of claim 3, wherein said groove opens at said first end face of said intermediate portion; and/or the presence of a gas in the gas,

the groove is formed in the surface, facing the joint, of one side of the end cover.

5. The sealing attachment of claim 4 wherein said groove is annular and said seal is annular;

an orthographic projection of the first threaded portion on the first end face is located inside the groove.

6. The sealing attachment structure of claim 3 wherein said first end surface is circular in shape.

7. The sealing attachment structure of claim 3 wherein said end cap has a bore extending through opposite sides thereof, an inner wall surface of said bore having an internal thread formation;

the first thread part is provided with an external thread structure in threaded fit with the internal thread structure, and the groove is formed in the periphery of the first thread part.

8. The sealing attachment of claim 3 wherein said end cap has a bore extending through opposite sides thereof, an inner wall surface of said bore having an internal thread formation;

the first thread part is provided with an external thread structure in threaded fit with the internal thread structure, and the groove is formed in the hole wall of the through hole.

9. The sealed connection structure according to claim 3, wherein the intermediate portion is hexagonal prism-shaped, the first end face is a bottom face of the intermediate portion, and the second end face is a top face of the intermediate portion; the joint has a through hole penetrating the first threaded portion, the intermediate portion, and the second threaded portion, the through hole communicating with the signal pipe.

10. The sealing connection according to claim 1, wherein one end of the signal pipe is screwed with the second threaded portion by a nut.

11. A four-way valve characterized by comprising the hermetic connecting structure according to any one of claims 1 to 10.

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