A pipe fitting connection device

Abstract

This application provides a pipeline connection device. When the first connector assembly and the second connector assembly are connected, the first valve core assembly abuts against the second valve core assembly, and the first valve port and the second valve port are in a conductive state. When the first connector assembly and the second connector assembly are disconnected, the first valve core assembly abuts against the first valve port, and the second valve core assembly abuts against the second valve port.

Description

[Technical Field]

[0001] This application relates to the field of refrigeration control technology, and in particular to a pipe connection device. [Background Technology]

[0002] Household air conditioners consist of an indoor unit and an outdoor unit, which are connected by a connecting pipe. The indoor unit is usually connected using a connector with a flared end. For those skilled in the art, it is necessary to provide a new type of pipe fitting connection device to facilitate the quick assembly and disassembly of the pipes connecting to the indoor unit. [Summary of the Invention]

[0003] The purpose of this invention is to provide a new type of pipe fitting connection device to facilitate quick assembly and disassembly of the pipes connected to the indoor unit.

[0004] To achieve the above objectives, the present invention provides a pipeline connection device, including a first connector assembly and a second connector assembly. The first connector assembly includes a first body assembly, a first valve core assembly, a first limiting seat, and a first elastic element. The second connector assembly includes a second body assembly, a second valve core assembly, a second limiting seat, and a second elastic element. The first connector assembly and the second connector assembly are detachably connected. The first body assembly is provided with a first valve port, and the second body assembly is provided with a second valve port. The first valve core assembly can approach or move away from the first valve port, and the second valve core assembly can approach or move away from the second valve port.

[0005] The first body assembly includes a first connector body and a first connecting portion, and a first limiting seat is limited or fixed between the first connecting portion and the first connector body. The second body assembly includes a second connector body and a second connecting portion, and a second limiting seat is limited or fixed between the second connector body and the second connecting portion. The first elastic member directly or indirectly abuts against the first limiting seat and the first valve core assembly, and the second elastic member directly or indirectly abuts against the second limiting seat and the second valve core assembly.

[0006] When the first connector assembly and the second connector assembly are connected, the first valve core assembly and the second valve core assembly directly or indirectly abut against each other, and the first valve port and the second valve port are in a conductive state; when the first connector assembly and the second connector assembly are disconnected, the first valve core assembly directly or indirectly abuts against the first valve port, and the second valve core assembly directly or indirectly abuts against the second valve port.

[0007] This invention optimizes the design of the pipe connection device. When the first connector assembly and the second connector assembly are connected, the first valve core assembly and the second valve core assembly directly or indirectly abut against each other, and the first valve port and the second valve port are in a conductive state. When the first connector assembly and the second connector assembly are disconnected, the first valve core assembly directly or indirectly abuts against the first valve port, and the second valve core assembly directly or indirectly abuts against the second valve port, which can facilitate the quick assembly and disassembly of the pipe connection to the indoor unit. [Attached Image Description]

[0008] Figure 1 A three-dimensional structural diagram of the pipe fitting connection device provided in this application in a disengaged state;

[0009] Figure 2 A cross-sectional schematic diagram of the first connector assembly of the pipe fitting connection device provided in this application;

[0010] Figure 3 A cross-sectional schematic diagram of the second connector assembly of the pipe fitting connection device provided in this application;

[0011] Figure 4 A cross-sectional view of the pipe fitting connection device provided in this application after connection;

[0012] Figure 5 A three-dimensional schematic diagram of the structure of a portion of the first valve core assembly of the pipeline connection device provided in this application;

Detailed Implementation Methods

[0013] To enable those skilled in the art to better understand the technical solutions provided in this application, the technical solutions of this application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0014] Reference Figure 1-4 As shown, this application provides a pipe fitting connection device structure, including a first connector assembly A1 and a second connector assembly A2. The first connector assembly A1 and the second connector assembly A2 are detachably connected. The first connector assembly A1 and the second connector assembly A2 can be connected by a threaded connection using a nut 13, or the first connector assembly A1 and the second connector assembly A2 can also be directly connected by an insertion method. The pipe fitting connection device structure provided in this application is described in detail using the connection of the first connector assembly and the second connector assembly via a nut 13. Refer to... Figure 2 and Figure 4As shown, the first connector assembly A1 includes a first body assembly 10, a first valve core assembly 30, a first limiting seat 36, a first elastic element 35, and a sealing element 101. The first body assembly 10 includes a first connector body 11 and a first connecting portion 12. The first connecting portion 12 includes a pipe connecting portion 121 and a connecting pipe 122. The pipe connecting portion 121 and the connecting pipe 122 can be fixed by welding. The first connector body 11 is provided with a first receiving cavity 14. Part of the pipe connecting portion 121 is located in the first receiving cavity 14, and part of the pipe connecting portion 121 is connected to the first connector body. 11. Fixed connection to achieve a fixed connection between the first connecting part 12 and the first connector body 11. The first connector body 11 is provided with a first valve port 15 and a groove. Part of the sealing element 101 is embedded in the groove. The nut 13 can be sleeved on the outer periphery of the first connector body 11. The first connector body 11 is also provided with a limiting protrusion and a sealing protrusion 111. The limiting protrusion limits the nut 13. The nut 13 is provided with an internal thread 131. The internal thread 131 of the nut forms a gap with part of the outer surface of the first connector body 11. At least part of the first... The valve core assembly 30 is located in the first receiving cavity 14. The first valve core assembly 30 can approach or move away from the first valve port 15. The first limiting seat 36 is fixed or limited between the pipe connection portion 121 and the first connector body 11. The first limiting seat 36 includes a body portion 361 and fins 362. The fins 362 extend outward from the circumference of the body portion 361. A notch is formed between two adjacent fins 362 to form a flow channel for media such as refrigerant. The body portion 361 protrudes from the fins 362 in a direction away from the first valve port 15. Specifically, several fins 362 The fin 362 is confined or fixed between the pipe connection 121 and the first connector body 11 to limit its radial movement. It should be noted that the confining or fixing described in this application includes both direct confining between two components and indirect confining, for example, by adding an additional component. The first valve core assembly 30 includes a first valve core 31 and a first seal 32. A portion of the first elastic member 35 is located within the first valve core 31, and the first elastic member 35 abuts against the first limiting seat 36 between the first valve core 31. The first seal 32 is disposed on the first valve core 31. Figure 2 The first connector assembly A1, after being disengaged from the second connector assembly A2, is subjected to the restoring force of the first elastic member 35 on the first valve core 31. The first valve core assembly 30 closes the first valve port 15, and the first sealing member 32 abuts against the first valve port 15. Figure 4 As shown, the first connector assembly A1 is in the state after being connected to the second connector assembly A2. At this time, the first valve port 15 is open and the first seal 32 is relatively far away from the first valve port.

[0015] Reference Figure 3 and Figure 4As shown, the second connector assembly A2 includes a second body assembly 20, a second valve core assembly 40, a second elastic element 45, and a second limiting seat 46. The second body assembly 20 includes a second connector body 21 and a second connecting portion 22. The second connector body 21 is provided with an external threaded portion 211 and a sealing conical portion 212. The external threaded portion 211 can be threadedly engaged with the internal threaded portion 131 of the nut 13, and the sealing conical portion 212 can abut against the sealing protrusion 111. Part of the second connecting portion forms a threaded pair B1 with the second connector body 21, and another part of the second connecting portion 22 is fixedly connected to the second connector body 21. The second body assembly 20 also includes a sealing element 300, which is embedded in the second connecting portion 22. An external connecting pipe can pass through the second connecting portion 22. The channel of part 22 is inserted into the second connecting part 22. The second connector body 21 is provided with a second receiving cavity 24 and a third receiving cavity 25, and also has a second valve port 26. Part of the second valve core assembly 40 is located in the third receiving cavity 25. The second valve core assembly 40 can approach or move away from the second valve port 26. The second limiting seat 46 is directly or indirectly limited or fixed between the second connecting part 22 and the second connector body 21. The structure of the second limiting seat 46 can be set with reference to the first limiting seat 36. The second valve core assembly 40 includes a second valve core 41 and a second sealing member 42. The second sealing member is disposed on the second valve core 41. Part of the second elastic member 45 is located in the second valve core 41. The second elastic member 45 abuts against the second valve core 41 and the second limiting seat 46. Figure 3 The second connector assembly A2, after being disengaged from the first connector assembly A1, is subjected to the restoring force of the second elastic element 45. The second valve core assembly 40 closes the second valve port 26, and the second sealing element 42 abuts against the second valve port 26. Figure 4 As shown, the first connector assembly A1 is in the state after being connected to the second connector assembly A2. At this time, the second valve port 26 is open, the second seal 42 is relatively far away from the second valve port 26, and the second valve port 26 and the first valve port 15 are in a conductive state.

[0016] Reference Figure 2-4As shown, after the first connector assembly A1 and the second connector assembly A2 are connected, a pipeline connection device is formed. At this time, the internal thread 131 of the nut 13 is threadedly connected to the external thread 211. Part of the first connector body 11 is located in the second receiving cavity 24, and part of the second connector body 21 is located at the gap formed between the internal thread 131 and the outer surface of part of the first connector body 11. The sealing member 101 abuts against the first connector body 11 and the second connector body 21 to form a first soft seal between the first connector assembly and the second connector assembly. The sealing protrusion 111 and the sealing conical part 212 abut against each other to form a second soft seal. A hard-seal structure prevents refrigerant leakage from between the first connector assembly and the second connector assembly. It should be noted that one of the first connector body and the second connector body may be provided with a sealing protrusion 111, and the other with a sealing conical portion 212. The first elastic element 35 abuts against the first valve core assembly 30 and the first limiting seat 36, and the second elastic element 45 abuts against the second valve core assembly 40 and the second limiting seat 46. The first push rod portion 311 of the first valve core 31 and the second push rod portion 411 of the second valve core 41 abut against each other and push open, causing the first valve port portion 15 to contact the second valve port. When part 26 is in the conductive state, the first elastic element 35 is further compressed, the second elastic element 45 is further compressed, and the entire pipe connection device is in the conductive state. Refrigerant enters the first receiving cavity 14 from the connecting pipe 122 of the first connecting part 12 through the notch of the first limiting seat 36, flows into the third receiving cavity 25, and exits outwards through the hole of the second connecting part. Alternatively, refrigerant can also enter from the hole of the second connecting part and exit outwards through the hole of the first connecting part 12. This application, through optimized design of the pipe connection device structure, enables better connection during installation with the indoor unit's connecting pipes. It allows for quick assembly and disassembly. When connection to the connecting pipe is required, the first connector assembly and the second connector assembly are threaded together, and the first valve core assembly and the second valve core assembly push against each other to allow refrigerant to flow. When connection is not required, simply disconnect the first connector assembly and the second connector assembly, the first valve core assembly closes the first valve port, and the second valve core assembly closes the second valve port. Compared with traditional flared connector devices, the pipe fitting connection device provided in this application can achieve quick assembly and disassembly. The overall operation is relatively simple and convenient, and even non-professionals can operate it easily, which can relatively reduce labor installation costs.

[0017] The following reference Figure 2-4 Combination Figure 5This paper describes the structure of the first valve core assembly 30, the first valve core limiting member 37, the second valve core assembly 40, and the second valve core limiting member 47, as well as the mating relationship between the first valve core assembly and the first valve core limiting member, and the mating relationship between the second valve core assembly and the second valve core limiting member. The first valve core assembly 30 provided in this application includes a first valve core 31, a first sealing member 32, a first gasket 33, and a first stop member 34. The first valve core 31 includes a first push rod portion 311, a first wing portion 312, a small diameter portion 313b, a large diameter portion 313a, a base portion 31a, and a first conical portion 314. The small diameter portion 313b is located between the first push rod portion 311 and the large diameter portion 313a. The first push rod portion 311 protrudes from the small diameter portion 313b. The base portion 31a and the first wing portion are connected by the first conical portion 314. The face 314 transitions, and several first wings 312 extend axially from the large-diameter portion 313a along the first valve core assembly. The first wings 312 can slide and engage with the inner peripheral wall of a portion of the first connector body 11. A flow channel for refrigerant flow is provided between two adjacent first wings 312. The bottom walls of the first wings 312 and the large-diameter portion 313a substantially define the first valve core receiving cavity of the first valve core. A portion of the first elastic member 35 is located in the first valve core receiving cavity. The first elastic member 35 abuts against the first limiting seat 36 and the bottom wall of the large-diameter portion 313a. The first valve core assembly also includes a first valve core groove 315, which is recessed inward from the outer surface of the small-diameter portion 313b. A portion of the first stop member 34 is limited to the first valve core groove 315. In this embodiment... The first stop 34 can be a snap ring, which expands and deforms to limit its position in the first valve core groove 315. Alternatively, the first stop 34 can be directly welded to the first valve core 31. The installation method of the first stop 34 and the first valve core 31 is not limited. The first seal 32 and the first stop 34 are located on different sides of the first gasket 33. The first gasket 33 undergoes relative displacement relative to the first valve core 31 along the axial direction. The first seal 32 is located between the base 31a and the first gasket 33. The first connector body 11 also includes a first flange 16 and a second conical portion 11a. The first flange 16 is farther from the first limiting seat 36 relative to the first valve port 15. The wall surface of the first flange 16 forms an abutment portion 161. The first valve port... Part 15 is located between the first flange part 16 and the second conical part 11a. The second conical part 11a is adjacent to the first valve port part. When the first connector assembly A1 and the second connector assembly A2 are disengaged, the first sealing member 32 abuts against the first valve port part 15 under the force of the first elastic member 35, and the abutting part 161 abuts against the first gasket 33. The first sealing member 32 is directly or indirectly pressed between the base 31a and the first gasket 33. A gap is formed between the first gasket 33 and the first stop member. The first conical part 314 and the second conical part 11a abut against each other to control the amount of compression of the first sealing member 32 and prevent deformation of the first sealing member. Through the above structural arrangement, the sealing performance between the first valve core and the first connector body can be relatively guaranteed. By adding a gasket component,After the seal is installed into the valve port channel, the compression of the seal is controlled by the gasket and the base. Installation of the seal is relatively convenient. The fact that the seal does not directly contact the valve body reduces wear. When the first connector assembly and the second connector assembly are connected, i.e., when the pipeline connection device is in a conductive state, the first seal 32 is in a free state, or the compression of the first seal 32 is much less than the compression when the first seal is in contact with the first valve port.

[0018] The corresponding second valve core assembly 40 includes a second valve core 41, a second seal 42, a second gasket 43, a second stop 44, a second wing 412, a third conical part 414, and a base 41a. The second connector body has a fourth conical part 21a, which is adjacent to the second valve port 26. The base 41a and the second wing 412 are transitioned through the third conical part 414. The second wing 412 can slide against part of the inner peripheral wall of the second connector body 21. The second connector body also includes a second flange, which has a second valve core 412. The second abutment portion, after the first connector assembly and the second connector assembly are disengaged, abuts against the second gasket 43. The second gasket 43 and the second stop 44 form a gap. The second seal 42 abuts against the second gasket 43 between the base 41a. Part of the second valve core 41 extends into the second receiving cavity 24. The third conical part 414 abuts against the fourth conical part 21a to control the amount of compression of the second seal 42. The specific structure of each component of the second valve core assembly is described in detail with reference to the first valve core assembly, and will not be repeated here.

[0019] When the first connector assembly and the second connector assembly are connected, the first push rod portion 311 of the first valve core of the first valve core assembly 30 and the second push rod portion 411 of the second valve core 41 of the second valve core assembly 40 abut against each other and push open to open the first valve port 15 and the second valve port 26. The first valve port 15 and the second valve port 26 are in a conductive state. In order to better limit the first valve core assembly and the second valve core assembly and prevent the first valve core and the second valve core from moving along the axial direction of the pipeline connection device, a first valve core limiter is also provided. Positioning member 37 and second valve core limiting member 47: The first valve core limiting member 37 is closer to the first valve port 15 relative to the first limiting seat 36, and directly or indirectly abuts against the first limiting seat 36 and the first connector body 21. The second valve core limiting member 47 is closer to the second valve port 26 relative to the second limiting seat 46, and directly or indirectly abuts against the second limiting seat 46 and the second connector body 21. The first valve core limiting member 37 can abut against the end of the first valve core 31 that is away from the first valve port. With or with a small clearance fit, the second valve core limiting member 47 can abut against or have a small clearance fit with the end of the second valve core 41 away from the second valve port. It should be noted that the small clearance fit here means that when the first connector assembly and the second connector assembly are connected, the first valve core 31 and the second valve core 41 are limited between the first valve core limiting member 37 and the second valve core limiting member 47, which can prevent the first valve core and the second valve core from moving axially, but does not exclude the possibility of slight displacement. Specifically, the first valve core limiting member 37 includes a first flange portion 371 and a first abutting portion. 372, the first abutting part protrudes from the first flange part toward the first valve port part 15, the first flange part 371 is limited or fixed between the body part 361 and the first connector body 21, the first abutting part 372 abuts against the end of the first wing part, the second valve core limiting member 47 includes a second flange part and a second abutting part, the second abutting part protrudes from the second flange part toward the second valve port part 26, the second abutting part abuts against the end of the second wing part, so as to realize the axial limiting of the first valve core and the second valve core when the pipeline connection device is in the conducting state.

[0020] The purpose of this application is to provide a new type of pipeline connection device, including a first connector assembly and a second connector assembly. The first connector assembly includes a first body assembly, a first valve core assembly, a first limiting seat, and a first elastic element. The second connector assembly includes a second body assembly, a second valve core assembly, a second limiting seat, and a second elastic element. The first connector assembly and the second connector assembly are detachably connected. The first body assembly is provided with a first valve port, and the second body assembly is provided with a second valve port. The first valve core assembly can approach or move away from the first valve port, and the second valve core assembly can approach or move away from the second valve port.

[0021] The first body assembly includes a first connector body and a first connecting part, and a first limiting seat is limited or fixed between the first connecting part and the first connector body. The second body assembly includes a second connector body and a second connecting part, and a second limiting seat is limited or fixed between the second connector body and the second connecting part. A first elastic member directly or indirectly abuts against the first limiting seat and the first valve core assembly, and a second elastic member directly or indirectly abuts against the second limiting seat and the second valve core assembly.

[0022] When the first connector assembly and the second connector assembly are connected, the first valve core assembly and the second valve core assembly directly or indirectly abut against each other, and the first valve port and the second valve port are in a conductive state; when the first connector assembly and the second connector assembly are disconnected, the first valve core assembly directly or indirectly abuts against the first valve port, and the second valve core assembly directly or indirectly abuts against the second valve port.

[0023] This application optimizes the design of the pipe fitting connection device structure, enabling quick assembly and disassembly during installation with the indoor unit's connecting pipes. When connection to the connecting pipe is required, the first connector assembly and the second connector assembly are threaded together, and the first valve core assembly and the second valve core assembly push against each other to allow refrigerant to flow. When connection is not required, simply detach the first connector assembly and the second connector assembly, and the first valve core assembly closes the first valve port, and the second valve core assembly closes the second valve port. Compared to traditional flared connector devices, the pipe fitting connection device provided in this application enables quick assembly and disassembly, and the overall operation is simple and convenient, even for non-professionals, thus reducing labor installation costs.

[0024] It should be noted that the term "mutual abutment" as used in this application includes both direct abutment and indirect abutment by adding an additional component. For example, the first seal can directly abut between the base and the first gasket, or an additional component can be added between the base and the first gasket to allow the first seal to indirectly abut between the base and the first gasket. Similarly, the term "clamping" also includes both direct clamping between two components and indirect clamping by adding a third component. Furthermore, the statement in this application that the first connector assembly and the second connector assembly are in a connected state refers to the state after the two have been connected and installed.

[0025] It should be noted that the directional terms such as "up" and "down" or ordinal numbers such as "first" and "second" mentioned in this document are introduced for ease of description based on the accompanying drawings; they do not imply any limitation on the order of the components. Furthermore, since some parts of the components provided in the above embodiments have the same function, this specification uses a unified naming convention for these parts. The piping connection device provided by the relevant technical solution has been described in detail above. Specific embodiments have been used in this document for illustration. The description of the above embodiments is only for helping to understand the method and core idea of ​​the present invention and is not intended to limit the present invention in any way.

Claims

1. A pipe fitting connection device, characterized in that, The device includes a first connector assembly and a second connector assembly. The first connector assembly includes a first body assembly, a first valve core assembly, a first limiting seat, and a first elastic element. The second connector assembly includes a second body assembly, a second valve core assembly, a second limiting seat, and a second elastic element. The first connector assembly and the second connector assembly are detachably connected. The first body assembly is provided with a first valve port, and the second body assembly is provided with a second valve port. The first valve core assembly can approach or move away from the first valve port, and the second valve core assembly can approach or move away from the second valve port. The first body assembly includes a first connector body and a first connecting portion, and a first limiting seat is limited or fixed between the first connecting portion and the first connector body. The second body assembly includes a second connector body and a second connecting portion, and a second limiting seat is limited or fixed between the second connector body and the second connecting portion. The first elastic member directly or indirectly abuts against the first limiting seat and the first valve core assembly, and the second elastic member directly or indirectly abuts against the second limiting seat and the second valve core assembly. When the first connector assembly and the second connector assembly are connected, the first valve core assembly and the second valve core assembly directly or indirectly abut against each other, and the first valve port and the second valve port are in a conductive state; when the first connector assembly and the second connector assembly are disconnected, the first valve core assembly directly or indirectly abuts against the first valve port, and the second valve core assembly directly or indirectly abuts against the second valve port. It also includes a first valve core limiting member and a second valve core limiting member. The first valve core limiting member is directly or indirectly limited or fixed between the first limiting seat and the first connector body. The first valve core limiting member is closer to the first valve port relative to the first limiting seat. The second valve core limiting member is directly or indirectly limited or fixed between the second limiting seat and the second connector body. The second valve core limiting member is closer to the second valve port relative to the second limiting seat. The first valve core limiting member can abut against the first valve core of the first valve core assembly, and the second valve core limiting member can abut against the second valve core of the second valve core assembly. When the first connector assembly and the second connector assembly are connected, the first valve core of the first valve core assembly and the second valve core of the second valve core assembly are limited between the first valve core limiting member and the second valve core limiting member.

2. The pipe fitting connection device according to claim 1, characterized in that, The first valve core assembly includes a first valve core, the second valve core assembly includes a second valve core, the first elastic member abuts between the first valve core and the first limiting seat, and the second elastic member abuts between the second valve core and the second limiting seat.

3. A pipe fitting connection device according to claim 2, characterized in that, The first limiting seat includes a body and fins. The fins extend outward from the body in a circumferential direction. The body protrudes from the fins. A flow channel is formed between two adjacent fins. The fins are directly or indirectly limited or fixed between the first connecting part and the first connector body.

4. A pipe fitting connection device according to claim 2, characterized in that, The first valve core includes a first wing and a large-diameter portion. The first wing extends from the large-diameter portion along the axial direction of the first valve core assembly. The first wing and the large-diameter portion substantially define a first valve core receiving cavity of the first valve core. A portion of the first elastic member is located in the first valve core receiving cavity. The first elastic member abuts against the first limiting seat and the bottom wall of the large-diameter portion.

5. A pipe fitting connection device according to claim 1, characterized in that, The first valve core includes a first wing, and the second valve core includes a second wing. When the pipeline connection device is in the conducting state, the end of the first wing abuts or is in clearance fit with the first valve core limiting member, and the end of the second wing abuts or is in clearance fit with the second valve core limiting member, so as to limit the first valve core and the second valve core between the first valve core limiting member and the second valve core limiting member.

6. A pipe fitting connection device according to claim 5, characterized in that, The first valve core limiting member includes a first flange and a first abutting portion. The first abutting portion protrudes from the first flange toward the first valve port. The first flange directly or indirectly limits or fixes the first connecting portion and the first connector body. The second valve core limiting member includes a second flange and a second abutting portion. The second abutting portion protrudes from the second flange toward the second valve port. The second flange directly or indirectly limits or fixes the second connecting portion and the second connector body.

7. A pipe fitting connection device according to any one of claims 1-6, characterized in that, The first valve core assembly includes a first valve core, a first seal, a first gasket, and a first stop. The first stop is limited or fixedly connected to the first valve core. The first seal and the first gasket are located on the outer periphery of the first valve core. The first stop and the first seal are located on different sides of the first gasket. The first gasket is capable of relative displacement with respect to the first valve core along the axial direction of the first valve core. The first valve core includes a base, and the first seal is located between the base and the first gasket.

8. A pipe fitting connection device according to claim 7, characterized in that, The second valve core assembly includes a second valve core. The first valve core includes a first push rod portion, and the second valve core includes a second push rod portion. When the first push rod portion and the second push rod portion abut against each other and push each other open, the first valve port portion and the second valve port portion are in a conductive state. The first valve core also includes a first wing portion, a small diameter portion, and a large diameter portion. The small diameter portion is located between the first push rod portion and the large diameter portion. The first wing portion extends from the large diameter portion approximately along the axial direction of the first valve core, and a flow channel is formed between two adjacent wings.

9. A pipe fitting connection device according to claim 8, characterized in that, The first wing slides into the inner peripheral wall of part of the first connector body. The first valve core is also provided with a first conical part. The base transitions from the first conical part to the first wing. The first connector body is provided with a second conical part. When the first connector assembly is disengaged from the second connector assembly, the first seal abuts against the first valve port. The first conical part abuts against the second conical part to control the amount of compression of the first seal.

10. A pipe fitting connection device according to claim 7, characterized in that, The first connector body further includes a flange portion, the flange portion including an abutment portion. When the first connector assembly is disengaged from the second connector assembly, the abutment portion abuts against the first gasket, a gap is formed between the first gasket and the first stop member, the first seal abuts against the space between the first gasket and the base, the first seal abuts against the first valve port, and the first seal is in a compressed state. When the first connector assembly is disengaged from the second connector assembly, the first seal is in a free state or the amount of compression of the first seal is less than the amount of compression of the first seal when it abuts against the first valve port.

11. A pipe fitting connection device according to any one of claims 1-6, characterized in that, The first connector assembly further includes a seal. When the first connector assembly and the second connector assembly are in a connected state, the seal abuts against the first connector body and the second connector body. One of the first connector body and the second connector body is provided with a sealing conical surface, and the other is provided with a sealing protrusion. The sealing protrusion can abut against the sealing conical surface to form a hard seal.

12. A pipe fitting connection device according to any one of claims 1-6, characterized in that, It also includes a nut, which is sleeved on the outer periphery of the first connector body. The nut has an internal thread, and the second connector body includes an external thread. The internal thread and the external thread are threaded together to connect the first connector assembly and the second connector assembly.

13. A pipe fitting connection device according to any one of claims 1-6, characterized in that, The first connecting part includes a pipe connecting part and a connecting pipe. The pipe connecting part is fixedly connected to the connecting pipe and the first connector body. A portion of the second connecting part is fixedly connected to the second connector body, and another portion of the second connecting part is threadedly connected to the second connector body. A sealing element is provided inside the second connecting part.

Images