Target flow valve mounting structure and air conditioner water machine

Abstract

The utility model provides a target flow valve mounting structure and an air conditioner water machine, and relates to the technical field of air conditioners. The target flow valve mounting structure comprises a pipe body and a target flow valve, the pipe wall of the pipe body communicates with a connector, the end face, away from the pipe body, of the connector serves as a first limiting end face, and the first limiting end face is provided with a first limiting part; the target flow valve comprises a valve body and a rotating sleeve rotationally connected to the valve body, the end face, facing a sleeve opening of the rotating sleeve, of the valve body serves as a second limiting end face, the second limiting end face is provided with a second limiting part, the rotating sleeve is in threaded connection with the connector, and the first limiting part and the second limiting part are in inserted fit in the axial direction of the rotating sleeve and relatively fixed in the circumferential direction. The air conditioner water machine comprises the pipe body and the target flow valve, and the pipe body and the target flow valve are connected through the installation structure. According to the target flow valve installation structure, the connection structure of the target flow valve and the pipe body is simple, installation and operation are convenient and fast, and the monitoring sensitivity and accuracy of the target flow valve on fluid in the pipe body can be guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioners, and more specifically, to an installation structure of a target flow valve and an air-conditioning water machine. Background Art

[0002] A target flow valve (also known as a target type flow switch) monitors the flow state of fluids such as water, gas, and oil by adopting the working principle of a strain target type flowmeter. Specifically, the target flow piece of the target flow valve is inserted into the pipe body and interacts with the fluid, and different interaction states can make its micro switch reach different trigger states, so as to realize the monitoring of the fluid state; among them, the relative orientation between the target flow piece and the fluid directly affects their interaction state, and further affects the monitoring sensitivity and accuracy of the target flow valve to the fluid state.

[0003] However, the existing structure for installing the target flow valve on the pipe body is relatively complex and the installation orientation still cannot be guaranteed, resulting in cumbersome installation operations of the target flow valve and the pipe body and unable to ensure the monitoring sensitivity and accuracy of the target flow valve to the fluid in the pipe body. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an installation structure of a target flow valve and an air-conditioning water machine to solve the technical problems that the installation operation of the existing target flow valve and the pipe body is cumbersome and the monitoring sensitivity and accuracy of the target flow valve to the fluid in the pipe body cannot be guaranteed.

[0005] To solve the above problems, the utility model provides an installation structure of a target flow valve, including a pipe body and a target flow valve. A connection joint is communicated with the pipe wall of the pipe body. The end surface of the connection joint facing away from the pipe body is used as a first limiting end surface, and a first limiting portion is arranged on the first limiting end surface.

[0006] The target flow valve includes a valve body and a rotating sleeve rotatably connected to the valve body. The end surface of the valve body facing the sleeve opening of the rotating sleeve is used as a second limiting end surface, and a second limiting portion is arranged on the second limiting end surface. The rotating sleeve is threadedly connected to the connection joint, and the first limiting portion and the second limiting portion are inserted and matched along the axial direction of the rotating sleeve and relatively fixed in the circumferential direction.

[0007] In the target flow valve installation structure provided by the utility model, on the one hand, by connecting a threaded connection joint on the outside of the pipe body and rotating a rotating sleeve in the threaded connection on the valve body, during assembly, it is only necessary to thread the rotating sleeve into the connecting joint to achieve the connection between the valve body and the pipe body, and the structure is simple and the installation operation is convenient; on the other hand, by providing a first limiting portion on the first limiting end face of the connecting joint and a second limiting portion on the second limiting end face of the valve body, during assembly, it is only necessary to align the first limiting portion and the second limiting portion and make the two be plugged and matched along the axial direction, and on the basis of ensuring that the threaded connection between the rotating sleeve and the connecting joint is normal, the circumferential limiting mechanism formed by the first limiting portion and the second limiting portion can limit the relative position of the valve body and the connecting joint along the circumferential direction, play a fool-proof role, thereby limiting the orientation of the target flow sheet inserted into the pipe body, and correspondingly ensuring the relative orientation of the target flow sheet when the fluid flows through the target flow sheet along the axial direction of the pipe body, thereby ensuring the effective interaction between the fluid and the target flow sheet, and correspondingly ensuring the monitoring sensitivity and accuracy of the valve body to the fluid.

[0008] Optionally, the first limiting portion includes a limiting groove provided on the first limiting end surface, and the second limiting portion includes a limiting protrusion provided on the second limiting end surface;

[0009] Alternatively, the first limiting portion includes a limiting protrusion provided on the first limiting end surface, and the second limiting portion includes a limiting groove provided on the second limiting end surface.

[0010] Optionally, the extension length of the limiting protrusion along the plugging direction is a, the axial length of the rotating sleeve extending out of the second limiting end face is b, and the depth of the limiting groove is c, wherein a>b, c>ab.

[0011] Optionally, the extension length of the limiting protrusion along the plugging direction is a, the depth of the limiting groove is c, and c≥a.

[0012] Optionally, an outer side wall of the connecting joint is provided with an external thread, and an inner side wall of the rotating sleeve is provided with an internal thread, and the internal thread is meshed with the external thread.

[0013] Optionally, the annular edge area of ​​the first limiting end face is convex outward to form an annular convexity, and a limiting convexity is provided on the inner side of the annular convexity as the first limiting portion; the end face of the valve body located in the rotating sleeve and facing the sleeve opening of the rotating sleeve includes a central area and an annular area surrounding the central area, the annular area is concave relative to the central area to form an annular groove, and a limiting groove is provided in the edge area of ​​the central area as the second limiting portion; the limiting convexity is inserted into the limiting groove, and the annular convex is inserted into the annular groove in a matching manner.

[0014] Optionally, the limiting groove is open on a side away from the midpoint of the central area.

[0015] Optionally, a sealing ring is clamped between the bottom of the annular groove and the annular protrusion.

[0016] Optionally, the limiting protrusion is an arc-shaped protrusion coaxial with the connecting joint, and the extending length of the limiting protrusion along the insertion direction is 1-5 mm, and the extending length along the circumferential direction is 1-10 mm.

[0017] The present utility model also provides an air-conditioning water machine, including a pipe body and a target flow valve, and the pipe body and the target flow valve are connected by the above installation structure.

[0018] The pipe body and the target flow valve in the air-conditioning water machine provided by the present utility model adopt the above installation structure, and have all the beneficial effects of this installation structure, which will not be elaborated here. Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the provided drawings.

[0020] Figure 1 It is the front view of the target flow valve installation structure provided by the present utility model;

[0021] Figure 2 It is the sectional view of the target flow valve installation structure provided by the present utility model;

[0022] Figure 3 It is the first perspective split view of the target flow valve and the pipe body in the target flow valve installation structure provided by the present utility model;

[0023] Figure 4 It is the second perspective split view of the target flow valve and the pipe body in the target flow valve installation structure provided by the present utility model;

[0024] Figure 5 It is the third perspective split view of the target flow valve and the pipe body in the target flow valve installation structure provided by the present utility model.

[0025] Description of the Reference Numerals:

[0026] 100 - pipe body; 110 - connecting joint; 111 - first limiting end face; 11a - limiting protrusion; 11b - annular protrusion; 200 - target flow valve; 210 - valve body; 211 - second limiting end face; 21a - limiting groove; 21b - annular groove; 21c - central boss; 212 - target flow piece; 220 - rotating sleeve; 221 - sleeve opening. Detailed Embodiments

[0027] To make the above objects, features, and advantages of the present utility model more obvious and understandable, the following detailed description will be given of the specific embodiments of the present utility model with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0028] This embodiment provides a target flow valve installation structure, as Figures 1-5 shown, which includes a pipe body 100 and a target flow valve 200. A connection joint 110 is communicated with the pipe wall of the pipe body 100. The end face of the connection joint 110 facing away from the pipe body 100 serves as a first limiting end face 111, and a first limiting portion is provided on the first limiting end face 111. The target flow valve 200 includes a valve body 210 and a rotating sleeve 220 rotatably connected to the valve body 210. The end face of the valve body 210 facing the socket 221 of the rotating sleeve 220 serves as a second limiting end face 211, and a second limiting portion is provided on the second limiting end face 211. The rotating sleeve 220 is threadedly connected to the connection joint 110, and the first limiting portion and the second limiting portion are inserted and matched along the axial direction of the rotating sleeve 220 and are relatively fixed in the circumferential direction.

[0029] In the target flow valve installation structure provided by this embodiment, the pipe body 100 is used for fluid passage, and the connection joint 110 provided on the pipe wall of the pipe body 100 is communicated with the pipe body 100; the valve body 210 of the target flow valve 200 is used for fluid monitoring, and the rotating sleeve 220 of the target flow valve 200 surrounds the target flow plate 212 of the valve body 210 and can rotate relative to the valve body 210.

[0030] When assembling the target flow valve 200 and the pipe body 100, the rotating sleeve 220 is coaxially aligned with the connecting joint 110, the first limiting portion is axially aligned with the second limiting portion, and the target flow piece 212 extends into the connecting joint 110; then the rotating sleeve 220 is rotated to be threadedly connected to the connecting joint 110. The first limiting portion and the second limiting portion are axially inserted and matched to form a circumferential limiting mechanism. As the rotating sleeve 220 continues to rotate, the depth of the threaded connection between the rotating sleeve 220 and the connecting joint 110 continuously increases, and the axial insertion depth of the first limiting portion and the second limiting portion also increases accordingly. Moreover, the first limiting portion and the second limiting portion are axially stopped relative to each other and cannot move relative to each other. Then, under the limiting action of the circumferential limiting mechanism, the valve body 210 can continuously approach the connecting joint 110 axially along with the rotating sleeve 220, while remaining stationary relative to the connecting joint 110 circumferentially, thereby limiting the relative circumferential position between the valve body 210 and the connecting joint 110, playing an anti-misassembly role, enabling the valve body 210 and the pipe body 100 to have a unique circumferential installation position, correspondingly limiting the orientation of the target flow piece 212 inserted into the pipe body 100, ensuring the relative orientation between the fluid flowing axially along the pipe body 100 and the target flow piece 212, further ensuring the effective interaction between the fluid and the target flow piece 212, as well as the sensitive and accurate feedback of the target flow piece 212 to the fluid; until the depth of the threaded connection between the rotating sleeve 220 and the connecting joint 110 reaches the target depth. Correspondingly, the length of the target flow piece 212 extending into the pipe body 100 through the connecting joint 110 reaches the target length, and the assembly of the target flow valve 200 and the pipe body 100 is completed.

[0031] In the target flow valve installation structure provided in this embodiment, on the one hand, by connecting the connecting joint 110 in the form of an external connecting thread on the pipe body 100 and rotating the rotating sleeve 220 in the form of a connecting thread on the valve body 210, during assembly, only by threadedly connecting the rotating sleeve 220 to the connecting joint 110 can the connection between the valve body 210 and the pipe body 100 be realized. The structure is simple and the installation operation is convenient; on the other hand, by providing the first limiting portion on the first limiting end face 111 of the connecting joint 110 and the second limiting portion on the second limiting end face 211 of the valve body 210, during assembly, only by aligning the first limiting portion and the second limiting portion and axially inserting and matching them, on the basis of ensuring the normal threaded connection between the rotating sleeve 220 and the connecting joint 110, the circumferential limiting mechanism formed by the first limiting portion and the second limiting portion can limit the relative circumferential position between the valve body 210 and the connecting joint 110, playing an anti-misassembly role, thereby limiting the orientation of the target flow piece 212 inserted into the pipe body 100, correspondingly ensuring the relative orientation between the fluid flowing axially along the pipe body 100 and the target flow piece 212, further ensuring the effective interaction between the fluid and the target flow piece 212, and correspondingly ensuring the monitoring sensitivity and accuracy of the valve body 210 to the fluid.

[0032] Specifically, in this embodiment, the first limiting portion includes a limiting groove 21a provided on the first limiting end face 111, and the second limiting portion includes a limiting protrusion 11a provided on the second limiting end face 211; the limiting groove 21a is concave relative to the first limiting end face 111, and the limiting protrusion 11a protrudes relative to the second limiting end face 211. When assembling the target flow valve 200 and the pipe body 100, the limiting protrusion 11a is axially inserted into the limiting groove 21a, and the insertion depth of the limiting protrusion 11a into the limiting groove 21a changes with the depth of the rotation sleeve 220 screwed onto the connection joint 110. At the same time, the limiting protrusion 11a is restricted by the side wall of the groove of the limiting groove 21a and cannot rotate circumferentially relative to the limiting groove 21a, thereby realizing the axial connection between the valve body 210 and the connection joint 110, and at the same time limiting the circumferential relative position between the valve body 210 and the connection joint 110, correspondingly realizing the limitation of the orientation of the target flow plate 212 extending into the pipe body 100, and further ensuring the interaction between the target flow plate 212 and the fluid in the pipe body 100, and ensuring the sensitive and accurate monitoring of the fluid by the valve body 210.

[0033] Of course, in addition to the above form, the circumferential limiting mechanism, such as Figure 4 and Figure 5 shown, the first limiting portion may also include a limiting protrusion 11a provided on the first limiting end face 111, and the second limiting portion includes a limiting groove 21a provided on the second limiting end face 211. The circumferential limiting principle is similar to the above description and will not be elaborated here.

[0034] In this embodiment, the extension length of the limiting protrusion 11a in the insertion direction is a, the axial length of the rotation sleeve 220 extending out of the second limiting end face 211 is b, and the groove depth of the limiting groove 21a is c, where a > b and c > a - b. When the limiting protrusion 11a is located on the first limiting end face 111 and the limiting groove 21a is located on the second limiting end face 211, the length of the limiting protrusion 11a protruding axially from the first limiting end face 111 is a, and the axial extension length of the limiting protrusion 11a is greater than the axial length b of the rotation sleeve 220 extending out of the second limiting end face 211. Then, during assembly, when the rotation sleeve 220 is coaxially aligned with the connection joint 110 and the limiting protrusion 11a is axially aligned with the limiting groove 21a, move the rotation sleeve 220 and the connection joint 110 axially towards each other, and the limiting protrusion 11a is first inserted into the limiting groove 21a, so as to conveniently and accurately complete the axial insertion of the limiting protrusion 11a and the limiting groove 21a under the condition of being externally visible and recognizable.

[0035] Wherein, a - c < b, that is, when the limiting protrusion 11a is inserted into the bottom of the limiting groove 21a, the axial length of the limiting protrusion 11a exposed outside the limiting groove 21a is less than the axial length b of the rotating sleeve 220 extending out of the second limiting end face 211. Then s = b - a + c is the axial depth allowing the rotating sleeve 220 to be screwed onto the connecting joint 110, thereby ensuring the threaded connection between the rotating sleeve 220 and the connecting joint 110, and correspondingly ensuring the connection between the valve body 210 and the pipe body 100. Specifically, when s ≥ b, that is, c ≥ a, when the limiting protrusion 11a can be completely inserted into the limiting groove 21a, the rotating sleeve 220 can be screwed onto the connecting joint 110 at any axial depth as needed, thereby ensuring the connection firmness and sealing performance between the rotating sleeve 220 and the connecting joint 110, and being able to adjust the depth of the target flow plate 212 extending into the pipe body 100. Then the rotating sleeve 220 is screwed onto the connecting joint 110, the depth adaptability of the limiting protrusion 11a inserted into the limiting groove 21a increases, and the target flow plate 212 extends into the pipe body 100 to the target depth for highly sensitive and highly accurate monitoring of the fluid.

[0036] Similarly, when the limiting protrusion 11a is located at the first limiting end face 111, a > b, then the limiting protrusion 11a axially extends out of the rotating sleeve 220, so that the axial plug connection between the limiting protrusion 11a and the limiting groove 21a can be conveniently and accurately completed under the condition of being externally visible and recognizable; a - c < b, then the threaded connection between the rotating sleeve 220 and the connecting joint 110 can be ensured, and correspondingly the connection between the valve body 210 and the pipe body 100 can be ensured.

[0037] Wherein, when a ≤ b, setting c ≥ a can ensure that the limiting protrusion 11a is completely plugged into the limiting groove 21a, thereby allowing the rotating sleeve 220 and the connecting joint 110 to have the maximum axial connection depth, correspondingly ensuring the threaded connection firmness and sealing performance between the rotating sleeve 220 and the connecting joint 110, and ensuring the connection stability between the valve body 210 and the pipe body 100.

[0038] For the threaded connection form between the connecting joint 110 and the rotating sleeve 220, the present embodiment can specifically adopt the following form: the outer side wall of the connecting joint 110 is provided with an external thread, and the inner side wall of the rotating sleeve 220 is provided with an internal thread, and the internal thread is meshed and matched with the external thread. When threaded connection is performed, the rotating sleeve 220 is sleeved outside the connecting joint 110, and the first limiting portion located at the end face of the connecting joint 110 is covered inside the rotating sleeve 220. Correspondingly, the second limiting portion is located inside the rotating sleeve 220, then the circumferential limiting mechanism formed by the plug-in cooperation between the first limiting portion and the second limiting portion is completely covered inside the rotating sleeve 220 in an internal state, improving the appearance neatness and use stability of the target flow valve 200 connected to the pipe body 100 while realizing the circumferential limitation of the valve body 210 and the connecting joint 110.

[0039] Of course, in some other embodiments, external threads may be provided on the outer sidewall of the rotating sleeve, and internal threads may be provided on the inner sidewall of the connecting joint. At this time, the second limiting portion is located outside the rotating sleeve.

[0040] Optionally, in this embodiment, as Figure 4 and Figure 5 shown, an annular protrusion 11b is formed by outwardly protruding the annular edge area of the end face of the connecting joint 110 facing away from the pipe body 100. A limiting protrusion 11a is provided on the inner side of the ring of the annular protrusion 11b as the first limiting portion; the valve body 210 is located inside the rotating sleeve 220, and the end face facing the sleeve opening 221 of the rotating sleeve 220 includes a central area and an annular area surrounding the central area. The annular area is recessed inward relative to the central area to form an annular groove 21b, and a limiting groove 21a is provided in the edge area of the central area as the second limiting portion; the limiting protrusion 11a is inserted into the limiting groove 21a, and the annular protrusion 11b is inserted into the annular groove 21b in a matching manner. The limiting protrusion 11a protrudes outward along the axial direction relative to the annular protrusion 11b. During assembly, when the limiting protrusion 11a is inserted into the limiting groove 21a, the annular protrusion 11b is also inserted into the annular groove 21b in a matching manner. On the basis of ensuring the circumferential limiting effect of the circumferential limiting mechanism composed of the limiting protrusion 11a and the limiting groove 21a on the valve body 210 relative to the connecting joint 110, as well as the connection firmness and sealing performance between the rotating sleeve 220 and the connecting joint 110, the connection sealing performance and stability between the valve body 210 and the connecting joint 110 are further improved; preferably, a sealing ring is embedded in the annular groove 21b. After the connecting joint 110 and the rotating sleeve 220 are screwed together, the annular protrusion 11b is inserted into the annular groove 21b and presses the sealing ring, thereby further improving the sealing performance of the valve body 210 connected to the connecting joint 110 and the pipe body 100, and reducing the occurrence of fluid leakage from the pipe body 100.

[0041] Specifically, in this embodiment, as Figure 2 and Figure 5 shown, one side of the limiting groove 21a away from the midpoint of the central area is open. The central area protrudes outward relative to the annular area to form a central boss 21c. The limiting groove 21a is located in the edge area of the circular central boss 21c and its outer side is open and communicates with the annular groove 21b. On the one hand, the limiting groove 21a and the annular groove 21b communicate to form an integral body, and during processing, the annular groove 21b and the limiting groove 21a can be processed in a single time, with higher processing convenience; on the other hand, as Figure 2 shown, the circumferential limiting mechanism formed by the limiting protrusion 11a being inserted into the limiting groove 21a is used for circumferential limiting, so that a certain insertion depth exists between the limiting protrusion 11a and the limiting groove 21a along the radial direction, thereby reducing the precise dimensional requirements of the limiting protrusion 11a and the limiting groove 21a along the radial direction, and correspondingly further improving the processing convenience.

[0042] Specifically, in this embodiment, as Figure 2 andFigure 4 As shown, the limiting convex 11a is an arc convex coaxial with the connecting joint 110, and the extending length of the limiting convex 11a along the insertion direction is 1 - 5 mm, and the extending length along the circumferential direction is 1 - 10 mm.

[0043] This embodiment also provides a chilled water unit for air conditioners, including a pipe body 100 and a target flow valve 200, and the pipe body 100 and the target flow valve 200 are connected by the above installation structure. The target flow valve 200 in the chilled water unit for air conditioners is used to monitor the water flow state in the pipe body 100. Among them, the pipe body 100 and the target flow valve 200 are connected by the above installation structure. On the one hand, by connecting a connecting joint 110 in the form of a communicating thread outside the pipe body 100 and a rotating sleeve 220 in the form of a rotating connection thread on the valve body 210, during assembly, only by threadedly connecting the rotating sleeve 220 to the connecting joint 110 can the connection between the valve body 210 and the pipe body 100 be realized, with a simple structure and convenient installation operation; on the other hand, by providing a first limiting portion on the first limiting end face 111 of the connecting joint 110 and a second limiting portion on the second limiting end face 211 of the valve body 210, during assembly, only by aligning the first limiting portion and the second limiting portion and making them axially inserted and matched, on the basis of ensuring the normal threaded connection between the rotating sleeve 220 and the connecting joint 110, the circumferential limiting mechanism formed by the first limiting portion and the second limiting portion can limit the relative circumferential position between the valve body 210 and the connecting joint 110, playing an anti-mistake role, making the valve body 210 and the pipe body 100 have a unique circumferential installation position, thereby limiting the orientation of the target flow piece 212 inserted into the pipe body 100, correspondingly ensuring the relative orientation between the fluid and the target flow piece 212 when the fluid flows axially along the pipe body 100 through the target flow piece 212, and further ensuring the effective interaction between the fluid and the target flow piece 212, and correspondingly ensuring the monitoring sensitivity and accuracy of the valve body 210 to the fluid.

[0044] Finally, it should also be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of another identical element in the process, method, article or device including the said element.

[0045] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present utility model. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present utility model. Therefore, the present utility model will not be limited to the embodiments shown herein, but rather to the broadest scope consistent with the principles and novel features disclosed herein.

Claims

1. A target flow valve installation structure, characterized in that: It comprises a tube body (100) and a target flow valve (200), wherein the tube wall of the tube body (100) is connected to a connecting joint (110), an end face of the connecting joint (110) facing away from the tube body (100) serves as a first limiting end face (111), and the first limiting end face (111) is provided with a first limiting portion; The target flow valve (200) comprises a valve body (210) and a rotating sleeve (220) rotatably connected to the valve body (210); the end face of the valve body (210) facing the sleeve opening (221) of the rotating sleeve (220) serves as a second limiting end face (211); the second limiting end face (211) is provided with a second limiting portion; the rotating sleeve (220) is threadedly connected to the connecting joint (110); the first limiting portion and the second limiting portion are plug-fitted along the axial direction of the rotating sleeve (220) and relatively fixed in the circumferential direction.

2. The target flow valve installation structure according to claim 1, characterized in that: The first limiting portion comprises a limiting groove (21a) provided on the first limiting end surface (111), and the second limiting portion comprises a limiting protrusion (11a) provided on the second limiting end surface (211); Alternatively, the first limiting portion comprises a limiting protrusion (11a) provided on the first limiting end surface (111), and the second limiting portion comprises a limiting groove (21a) provided on the second limiting end surface (211).

3. The target flow valve installation structure according to claim 2, characterized in that: The extension length of the limiting protrusion (11a) along the plugging direction is a, the axial length of the rotating sleeve (220) extending from the second limiting end surface (211) is b, and the groove depth of the limiting groove (21a) is c, wherein a>b, c>ab.

4. The target flow valve installation structure according to claim 2, characterized in that: The extension length of the limiting protrusion (11a) along the plugging direction is a, and the depth of the limiting groove (21a) is c, where c≥a.

5. The target flow valve installation structure according to any one of claims 1 to 4, characterized in that: The outer wall of the connecting joint (110) is provided with an external thread, and the inner wall of the rotating sleeve (220) is provided with an internal thread, and the internal thread is meshed with the external thread.

6. The target flow valve installation structure according to claim 5, characterized in that: The annular edge area of ​​the first limiting end face (111) is convex outward to form an annular convexity (11b), and the inner side of the annular convexity (11b) is provided with a limiting convexity (11a) as the first limiting portion; the valve body (210) is located in the rotating sleeve (220) and the end face of the sleeve opening (221) facing the rotating sleeve (220) includes a central area and an annular area surrounding the central area, the annular area is concave relative to the central area to form an annular groove (21b), and the edge area of ​​the central area is provided with a limiting groove (21a) as the second limiting portion; the limiting convexity (11a) is inserted into the limiting groove (21a), and the annular convexity (11b) is inserted into the annular groove (21b) in a matching manner.

7. The target flow valve installation structure according to claim 6, characterized in that: The limiting groove (21a) is arranged to be open on a side away from the midpoint of the central area.

8. The target flow valve installation structure according to claim 6, characterized in that: A sealing ring is sandwiched between the groove bottom of the annular groove (21b) and the annular protrusion (11b).

9. The target flow valve installation structure according to claim 6, characterized in that: The limiting protrusion (11a) is an arc-shaped protrusion coaxial with the connecting joint (110), and the extending length of the limiting protrusion (11a) along the plugging direction is 1-5 mm, and the extending length along the circumferential direction is 1-10 mm.

10. An air conditioning water machine, characterized in that: It comprises a pipe body (100) and a target flow valve (200), and the pipe body (100) and the target flow valve (200) are connected by using the mounting structure according to any one of claims 1 to 9.

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