Throttling stop valve and air conditioning system
By using detachable connector assemblies and limiting components, the problem of difficult disassembly of throttling elements is solved, thus achieving the stability and safety of the throttling shut-off valve and reducing production and maintenance costs.
Patent Information
- Application Number
- CN202520680196.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-11
- Publication Date
- 2026-02-13
- Estimated Expiration
- 2035-04-11
AI Technical Summary
The throttling element of existing throttling shut-off valves is not easy to disassemble and cannot be reconnected after damage, which increases production costs.
The design employs detachable connector assemblies and limiting components, allowing the throttling assembly to be detachably connected to the valve body. The limiting components prevent detachment, ensuring the stability and safety of the throttling assembly and facilitating disassembly and replacement.
It reduces the production and maintenance costs of throttling valves, saves the cost of replacing the entire valve, and improves the convenience of connection and sealing performance.
Smart Images
Figure CN223908970U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of valves, in particular to a throttling stop valve and an air conditioning system. BACKGROUND
[0002] The throttling stop valve is a device capable of throttling and fluid on-off, which controls the on-off of fluid through the movement of the valve core, and sets a throttling element to achieve throttling. In order to avoid the blockage of the throttling element by impurities in the fluid, a filter screen is usually provided to filter the fluid passing through the throttling element.
[0003] In the related art, when the throttling stop valve is assembled, the throttling element is first installed in the valve body, and then the filter screen and the connecting pipe are sequentially installed, and then fixed by welding. However, the connecting pipe is fixed after being welded with the valve body, if the internal throttling element needs to be replaced due to damage, the welded part must be damaged (such as cutting the connecting pipe), but it cannot be reconnected after being damaged, and the entire throttling stop valve can only be scrapped in the end, thereby increasing the production cost. CONTENT OF THE UTILITY MODEL
[0004] Therefore, it is necessary to provide a throttling stop valve and an air conditioning system to solve the problem that the throttling element in the existing throttling stop valve is not easy to disassemble, cannot be reconnected after being damaged, and the production cost is increased.
[0005] The present application provides a throttling stop valve, which comprises a valve body, a joint assembly, a first limiting piece and a throttling assembly, the valve body has a valve cavity and a first opening, the first opening is arranged at one end of the valve cavity along the axial direction of the valve cavity; the throttling assembly is installed in the valve cavity through the first opening, the joint assembly is sleeved on the outer periphery of the first opening and is detachably connected with the valve body, and the first limiting piece is detachably connected with the valve body and abuts against one end of the throttling assembly close to the first opening along the axial direction of the valve cavity.
[0006] In one of the embodiments, the joint assembly comprises a connecting head and a first connecting pipe, the inner wall of the connecting head is provided with a limiting portion, and the limiting portion divides the inner part of the connecting head into a first assembly cavity and a second assembly cavity, the first assembly cavity is sleeved and threadedly connected with the valve body, and the second assembly cavity is sleeved and connected with the first connecting pipe; wherein the limiting portion forms the first limiting piece.
[0007] In one of the embodiments, one of the end of the valve body and the inner wall of the connecting head is provided with a sealing conical surface, and the other is provided with a sealing step, the sealing step and the sealing conical surface are in abutting connection to realize linear sealing.
[0008] In one of the embodiments, a gap is formed between the limiting part and the throttling assembly in the axial direction; and / or, a gap is formed between the outer wall of the throttling assembly and the inner wall of the valve cavity.
[0009] In one of the embodiments, the throttling stop valve further comprises a first filter structure, at least a portion of the first filter structure is arranged between the first connecting pipe and the limiting part in the axial direction, and the connecting head, the first connecting pipe and the first filter structure are welded and fixed.
[0010] In one of the embodiments, the inner wall of the valve cavity is recessed to form a first clamping groove, the first limiting part is installed in the first clamping groove and at least partially protrudes from the first clamping groove, so that the first limiting part can be stopped in the axial direction at one end of the throttling assembly close to the first opening.
[0011] In one of the embodiments, the throttling stop valve further comprises a first filter structure, at least a portion of the first filter structure is arranged between the throttling assembly and the first limiting part in the axial direction.
[0012] In one of the embodiments, the joint assembly comprises a connecting head and a first connecting pipe, one of the end of the valve body and the inner wall of the connecting head is provided with a first sealing surface, and the other is provided with a second sealing surface; the connecting head is sleeved and threadedly connected to the valve body, and the first connecting pipe penetrates through the connecting head, wherein, one end of the first connecting pipe close to the valve body is provided with a connecting section, and the first sealing surface and the second sealing surface can abut and clamp the connecting section with the movement of the connecting head towards the valve body.
[0013] In one of the embodiments, the throttling stop valve further comprises a second filter structure, the valve body is further provided with a second opening, the second opening is arranged on the peripheral side of the valve cavity and communicates with the valve cavity, wherein, the second filter structure is interference press-fitted in the second opening; or, the inner wall of the valve cavity is provided with a limiting step, the limiting step is arranged at one end of the throttling assembly away from the joint assembly in the axial direction, wherein, at least a portion of the second filter structure is arranged between the limiting step and the throttling assembly in the axial direction.
[0014] In one of the embodiments, the inner wall of the valve cavity is recessed to form a first sealing groove, a first sealing part is installed in the first sealing groove, and the first sealing part at least partially protrudes from the first sealing groove and abuts against the throttling assembly.
[0015] In one of the embodiments, the throttling stop valve further comprises a stop valve core, a second limiting member and a valve cap, the stop valve core is movably installed in the valve cavity, and a second sealing groove is recessed on the outer wall of the stop valve core, a second sealing member is installed in the second sealing groove, and the stop valve core movably seals with the inner wall of the valve cavity through the second sealing member; the inner wall of the valve cavity is recessed to form a second clamping groove, the second limiting member is installed in the second clamping groove and at least partially protrudes from the second clamping groove, so that the second limiting member can be axially stopped at one end of the stop valve core away from the first opening; the valve cap is sleeved on the end of the valve body away from the first opening and connected with the valve body.
[0016] The application also provides an air conditioning system comprising the throttling stop valve of any one of the above embodiments.
[0017] Compared with the prior art, the throttling stop valve and the air conditioning system provided by the application can prevent the throttling assembly from being separated from the valve body during use by using the first limiting member to limit the throttling assembly, thereby ensuring the stability and safety of the throttling assembly. At the same time, the joint assembly and the valve body are detachably connected, which is not only convenient to connect, but also allows the first limiting member to be disassembled when the joint assembly is disassembled, thereby releasing the limitation on the throttling assembly, which is conducive to the disassembly of the throttling assembly. In this way, compared with the traditional structure, if the throttling assembly has quality problems, only the throttling assembly needs to be replaced, and the entire valve does not need to be scrapped, thereby greatly reducing the production and maintenance cost of the throttling stop valve. BRIEF DESCRIPTION OF DRAWINGS
[0018] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of these drawings.
[0019] Figure 1 A sectional view of the throttling stop valve of Embodiment One provided by the application;
[0020] Figure 2 A sectional view of the throttling stop valve of Embodiment Two provided by the application; Figure 1 An enlarged view of position A in FIG. 4;
[0021] Figure 3 A sectional view of the throttling stop valve of Embodiment Two provided by the application;
[0022] Figure 4 An enlarged view of position B in FIG. 6; Figure 3
[0023] Figure 5 A sectional view of a throttle stop valve according to an embodiment of the present application.
[0024] The symbols in the drawings represent the following meanings:
[0025] 100, throttle stop valve; 10, valve body; 101, valve cavity; 102, first opening; 103, second opening; 104, first clamping groove; 105, second clamping groove; 106, first sealing groove; 11, sealing cone surface; 12, first sealing surface; 13, limiting step; 14, second limiting member; 15, first sealing member; 16, bonnet; 17, nut; 20, joint assembly; 21, connecting head; 2101, first assembly cavity; 2102, second assembly cavity; 211, sealing step; 212, second sealing surface; 213, limiting portion; 22, first connecting pipe; 221, connecting section; 30, first limiting member; 40, throttling assembly; 401, accommodating cavity; 41, throttle valve seat; 42, throttle valve core; 50, first filtering structure; 60, second filtering structure; 70, stop valve core; 701, second sealing groove; 71, second sealing member. DETAILED DESCRIPTION
[0026] In order to make the above objectives, features and advantages of the present application more clear and easily understood, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a number of different ways from those described herein without departing from the spirit of the present application. It is therefore intended that the present application is not limited by the specific embodiments disclosed below.
[0027] It should be noted that when an element is referred to as being "on" or "fixed to" another element, it can be directly on or fixed to the other element or intervening elements can also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements can also be present. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions as used in the description of the specification are for the purpose of illustration only and do not indicate the only position of the elements.
[0028] In addition, the terms "first", "second", and the like, are used only for descriptive purposes and do not indicate or imply relative importance or a quantity of the indicated features. Thus, a feature defined with "first" or "second" can include at least one of the features explicitly or implicitly. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.
[0029] In the present application, unless specifically defined and limited otherwise, the first feature is "on", "under", "above" or "over" the second feature can be that the first feature is in direct contact with the second feature, or the first feature and the second feature are indirectly in contact through an intermediate medium. Moreover, the first feature is "on", "above" and "over" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the first feature is higher than the second feature in horizontal height. The first feature is "under", "below" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the first feature is lower than the second feature in horizontal height.
[0030] Unless otherwise defined, all technical and scientific terms used in the specification of the present application have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application. The term "and / or" used in the specification of the present application includes any and all combinations of one or more related listed items.
[0031] The throttling stop valve is a device capable of realizing throttling and fluid on-off at the same time. The on-off of fluid is controlled by the movement of the valve core, and the throttling element is arranged to realize throttling. In order to avoid the blockage of the throttling element by impurities in the fluid, a filter screen is usually arranged to filter the fluid passing through the throttling element.
[0032] In the related art, when assembling the throttling stop valve, the throttling element is first installed in the valve body, and then the filter screen and the connecting pipe are sequentially installed, and then fixed by welding. However, the connecting pipe is fixed after being welded with the valve body. If the internal throttling element needs to be replaced due to damage, the welding part must be damaged (such as cutting the connecting pipe), but it cannot be reconnected after being damaged, and finally the entire throttling stop valve can only be scrapped, thereby increasing the production cost.
[0033] Please refer to Figures 1-5To solve the problem that the throttling element in the existing throttling stop valve is not easy to disassemble, cannot be reconnected after being damaged, and leads to increased production cost, the application provides a throttling stop valve 100, which comprises a valve body 10, a joint assembly 20, a first limiting piece 30, and a throttling assembly 40. The valve body 10 has a valve cavity 101, a first opening 102, and a second opening 103. Along the axial direction of the valve cavity 101, the first opening 102 is arranged at one end of the valve cavity 101 and communicates with the valve cavity 101, and the second opening 103 is arranged at the circumferential side of the valve cavity 101 and communicates with the valve cavity 101. The throttling assembly 40 is installed in the valve cavity 101 through the first opening 102. The joint assembly 20 is sleeved on the outer periphery of the first opening 102 and is detachably connected with the valve body 10. Here, the joint assembly 20 and the valve body 10 can be detachably connected through threads or buckles. Moreover, the first limiting piece 30 is detachably connected with the valve body 10 and abuts against one end of the throttling assembly 40 close to the first opening 102 along the axial direction of the valve cavity 101.
[0034] It can be understood that the application can prevent the throttling assembly 40 from being separated from the valve body 10 during use by limiting the throttling assembly 40 with the first limiting piece 30, thereby ensuring the stability and safety of the throttling assembly 40. At the same time, the joint assembly 20 is detachably connected with the valve body 10, which is not only convenient to connect, but also allows the first limiting piece 30 to be disassembled when the joint assembly 20 is disassembled, thereby releasing the limitation on the throttling assembly 40, which is conducive to the disassembly of the throttling assembly 40. In this way, compared with the traditional structure, if the throttling assembly 40 has quality problems, only the throttling assembly 40 needs to be replaced, and the entire valve does not need to be scrapped, thereby greatly reducing the production and maintenance cost of the throttling stop valve 100.
[0035] Specifically, the joint assembly 20 comprises a connecting head 21 and a first connecting pipe 22. The connecting head 21 is sleeved on the outer periphery of the valve body 10 and is threadedly connected with the valve body 10. The first connecting pipe 22 is connected to the valve body 10 through the connecting head 21. Further, the throttling stop valve 100 further comprises a second connecting pipe (not shown in the figure). The first connecting pipe 22 communicates with the first opening 102, and the second connecting pipe communicates with the second opening 103. Here, the second connecting pipe can be locked to the second opening 103 of the valve body 10 through a nut 17.
[0036] Exemplarily, the throttling assembly 40 comprises a throttling valve seat 41 and a throttling valve core 42, the throttling valve seat 41 is detachably mounted in the valve cavity 101, and the throttling valve seat 41 is provided with a receiving cavity 401, and the throttling valve core 42 is movably mounted in the receiving cavity 401, so as to realize the adjustment of the flow by the sliding of the throttling valve core 42 in the receiving cavity 401. Since the throttling valve core 42 moves and frequently collides with the throttling valve seat 41, wear may occur at the joint of the two, which reduces the throttling effect. Therefore, the detachable connection of the joint assembly 20 and the first limiting piece 30 can facilitate the maintenance and replacement of the throttling assembly 40, thereby reducing the cost.
[0037] In order to facilitate the disassembly and assembly of the throttling assembly 40, in an embodiment, a gap is formed between the outer wall of the throttling assembly 40 and the inner wall of the valve cavity 101, that is, the throttling assembly 40 and the valve cavity 101 are in clearance fit, so as to reduce the contact area between the throttling assembly 40 and the valve cavity 101, thereby effectively reducing the moving resistance.
[0038] Further, as shown in Figure 2 and Figure 4 , the inner wall of the valve cavity 101 is recessed to form a first sealing groove 106, the first sealing groove 106 is provided with a first sealing piece 15, and the first sealing piece 15 at least partially protrudes out of the first sealing groove 106 and abuts against the throttling assembly 40. In this way, the first sealing piece 15 can seal the flow path formed by the gap between the outer wall of the throttling assembly 40 and the inner wall of the valve cavity 101, so as to ensure the flow of the fluid from the passage on the throttling assembly 40, thereby effectively improving the sealing performance of the throttling stop valve 100.
[0039] It should be noted that the gap between the outer wall of the throttling assembly 40 and the inner wall of the valve cavity 101 can be reasonably set according to the needs, so as to reduce the moving resistance of the throttling assembly 40 during disassembly and assembly, while avoiding shaking.
[0040] In an embodiment, as shown in Figure 1 , Figure 3 and Figure 5 , the throttling stop valve 100 further comprises a stop valve core 70, the stop valve core 70 is movably mounted in the valve cavity 101, and the outer wall of the stop valve core 70 is recessed to form a second sealing groove 701, the second sealing groove 701 is provided with a second sealing piece 71, and the stop valve core 70 is movably sealed with the inner wall of the valve cavity 101 through the second sealing piece 71. In this way, the sealing performance of the stop valve core 70 during movement can be ensured, and the stop valve core 70 can realize the cutting or communication of the flow path between the first opening 102 and the second opening 103 with the axial movement of the stop valve core 70.
[0041] In order to avoid the disengagement between the stop valve core 70 and the valve body 10 when the stop valve core 70 moves, in an embodiment, the throttling stop valve 100 further comprises a second limiting member 14 and a valve cap 16. The inner wall of the valve cavity 101 is recessed to form a second clamping groove 105, and the second limiting member 14 is installed in the second clamping groove 105 and at least partially protrudes from the second clamping groove 105, so that the second limiting member 14 can be axially stopped at the end of the stop valve core 70 away from the first opening 102. The valve cap 16 is sleeved on the end of the valve body 10 away from the first opening 102 and connected with the valve body 10. Here, the second limiting member 14 can adopt a clamping ring structure. In this way, after the stop valve core 70 is installed in the valve cavity 101, the movement of the stop valve core 70 is limited by the second limiting member 14, and the valve cap 16 can prevent foreign matter from entering the valve cavity 101, thereby ensuring the reliability of the throttling stop valve 100 during long-term use.
[0042] In order to filter the fluid flowing to the throttling assembly 40 at the second opening 103, in an embodiment, as shown in Figure 5 , the throttling stop valve 100 further comprises a second filter structure 60, and the second filter structure 60 is press-fitted in the second opening 103. In this way, the installation and cooperation of the throttling assembly 40 are simpler, and the throttling assembly 40 only needs to be inserted into the valve cavity 101 from the first opening 102.
[0043] In another embodiment, as shown in Figure 1 , the inner wall of the valve cavity 101 is protruded to form a limiting step 13, and the limiting step 13 is located at the end of the throttling assembly 40 axially away from the joint assembly 20. At least part of the second filter structure 60 is clamped between the limiting step 13 and the throttling assembly 40 in the axial direction. In this way, the installation of the second filter structure 60 is also facilitated, and the traditional welding or other fixing methods can be cancelled. The second filter structure 60 can be limited only by extruding the throttling assembly 40, which is conducive to subsequent replacement.
[0044] It should be noted that when the second filter structure 60 is installed in the second opening 103, the throttling assembly 40 can directly abut against the above-mentioned limiting step 13 to achieve axial limitation.
[0045] Embodiment one
[0046] In this embodiment, as shown in Figure 1 and Figure 2As shown, the inner wall of the connecting head 21 is protruded to form a limiting part 213, and the limiting part 213 separates the inner part of the connecting head 21 into a first assembly cavity 2101 and a second assembly cavity 2102, the first assembly cavity 2101 is sleeved and threadedly connected to the valve body 10, and the second assembly cavity 2102 is sleeved and connected to the first connecting pipe 22, wherein the limiting part 213 forms the first limiting part 30. In this way, the connecting head 21 and the first limiting part 30 are simple in structure, and with the locking of the connecting head 21 and the valve body 10, the axial limiting of the throttling assembly 40 can be realized at the same time, which greatly improves the installation efficiency.
[0047] In order to ensure the sealing between the connecting head 21 and the valve body 10, in an embodiment, one of the end of the valve body 10 and the inner wall of the connecting head 21 is provided with a sealing taper surface 11, and the other is provided with a sealing step 211, the sealing step 211 is in abutting cooperation with the sealing taper surface 11 to realize linear sealing. In this way, the sealing structure between the connecting head 21 and the valve body 10 is simple and easy to process, and the sealing effect can be effectively guaranteed.
[0048] Optionally, as shown, Figure 2 In this embodiment, the sealing taper surface 11 is arranged on the end of the valve body 10, and the sealing step 211 is arranged on the inner wall of the connecting head 21. Of course, in other embodiments, sealing pads or sealing rings can also be used to realize the sealing connection between the valve body 10 and the connecting head 21.
[0049] Further, there is a gap between the limiting part 213 and the throttling assembly 40 in the axial direction, so that when the connecting head 21 is installed on the valve body 10, the sealing taper surface 11 cannot be in close contact with the sealing step 211 to realize linear sealing due to the abutting of the limiting part 213 with the throttling assembly 40 first, thereby avoiding the occurrence of the situation that the sealing is not strict.
[0050] In an embodiment, as shown, Figure 2 The throttling stop valve 100 further comprises a first filtering structure 50 for filtering the fluid flowing into the throttling assembly 40 from the first connecting pipe 22 to prevent impurities from blocking the small holes on the throttling assembly 40.
[0051] Specifically, at least part of the first filter structure 50 is arranged axially between the first connecting pipe 22 and the limiting portion 213, and the connecting head 21, the first connecting pipe 22 and the first filter structure 50 are welded and fixed. That is, in the embodiment, the outer periphery of the first filter structure 50 is clamped between the first connecting pipe 22 and the limiting portion 213 and is fixed by welding, thereby effectively ensuring the stability of the connection of the three. Moreover, since the connecting head 21 and the valve body 10 are arranged separately, when assembling, the first connecting pipe 22 and the first filter structure 50 can be welded on the connecting head 21 first, and then the threaded connection of the connecting head 21 and the valve body 10 is performed. On the one hand, the welding high temperature can be avoided to have adverse effects on the valve body 10 and the internal components (such as the throttling assembly 40) of the valve body 10, so that the throttling assembly 40 and the like do not need to be limited to high-temperature-resistant materials when manufactured, thereby expanding the selection range of materials and facilitating the reduction of production cost. On the other hand, if there is a quality problem such as welding defects, the entire body of the connecting head 21, the first connecting pipe 22 and the first filter structure 50 can be replaced, without the need to scrap the entire throttling stop valve 100.
[0052] In other embodiments, the connecting head 21 and the first connecting pipe 22 can be welded and fixed, and the first filter structure 50 can be interference-fitted in the first connecting pipe 22. The specific arrangement can be reasonably set according to actual needs.
[0053] Embodiment Two
[0054] In the embodiment, as shown in Figure 3 and Figure 4 , the inner wall of the valve cavity 101 is recessed to form a first clamping groove 104, and the first limiting member 30 is installed in the first clamping groove 104 and at least partially protrudes from the first clamping groove 104, so that the first limiting member 30 can be axially stopped at one end of the throttling assembly 40 close to the first opening 102. In this way, the installation of the first limiting member 30 is facilitated, and the first limiting member 30 can also adopt a clamping ring structure.
[0055] Further, in the embodiment, at least part of the first filter structure 50 is clamped axially between the throttling assembly 40 and the first limiting member 30. That is, the throttling assembly 40 and the first filter structure 50 are installed in the valve cavity 101 through the first opening 102 in sequence, and then are clamped in the first clamping groove 104 through the first limiting member 30, and cooperate with the limiting step 13 in the valve cavity 101 to simultaneously achieve the axial limiting of the throttling assembly 40 and the first filter structure 50, thereby ensuring the stability and safety of the installation of the two.
[0056] In an embodiment, one of the end of the valve body 10 and the inner wall of the connecting head 21 is provided with the first sealing surface 12, and the other is provided with the second sealing surface 212. For the convenience of description, it is defined herein that the first sealing surface 12 is arranged on the end of the valve body 10, and the second sealing surface 212 is arranged on the inner wall of the connecting head 21. In this embodiment, the connecting head 21 is sleeved and threadedly connected to the valve body 10, and the first connecting pipe 22 is arranged through the connecting head 21, wherein the first connecting pipe 22 is provided with a connecting section 221 at the end close to the valve body 10, and the first sealing surface 12 and the second sealing surface 212 can abut and clamp the connecting section 221 with the movement of the connecting head 21 towards the valve body 10, so as to realize the surface sealing.
[0057] It can be understood that, in this way, with the tightening of the connecting head 21, not only the installation of the first connecting pipe 22 can be directly realized, but also the sealing cooperation among the first connecting pipe 22, the connecting head 21 and the valve body 10 can be realized, and the overall connection efficiency is higher. Moreover, the structure does not need to use the welding process, avoids the heat influence caused by welding, and prevents the generation of welding defects, further reducing the production cost.
[0058] Optionally, the first sealing surface 12, the second sealing surface 212 and the connecting section 221 can be arranged in a conical shape, and of course, can also be arranged in a planar structure perpendicular to the axial direction of the valve cavity 101.
[0059] The application also provides an air conditioning system, which comprises the throttling stop valve 100.
[0060] The technical features of the above embodiments can be combined in any manner. In order to make the description simple, all possible combinations of the technical features in the above embodiments are not described, but as long as the combinations of the technical features do not exist, they should be considered as the scope of the description.
[0061] The above embodiments only express several implementation manners of the application, and the description is more specific and detailed, but it should not be understood as a limitation on the patent scope of the application. It should be pointed out that, for ordinary skilled persons in the art, some modifications and improvements can be made without departing from the concept of the application, and these all belong to the protection scope of the application. Therefore, the patent protection scope of the application should be subject to the appended claims.
Claims
1. A throttling stop valve, characterized by, The valve body (10) has a valve cavity (101) and a first opening (102) arranged at one end of the valve cavity (101) along the axial direction of the valve cavity (101); The throttling assembly (40) is installed in the valve cavity (101) through the first opening (102), the joint assembly (20) is sleeved on the outer periphery of the first opening (102) and detachably connected with the valve body (10), and the first limiting piece (30) is detachably connected with the valve body (10) and axially stopped at one end of the throttling assembly (40) close to the first opening (102).
2. The throttling stop valve according to claim 1, characterized in that The joint assembly (20) comprises a connecting head (21) and a first connecting pipe (22), the inner wall of the connecting head (21) is provided with a limiting portion (213), and the limiting portion (213) divides the inner part of the connecting head (21) into a first assembly cavity (2101) and a second assembly cavity (2102), the first assembly cavity (2101) is sleeved and threadedly connected with the valve body (10), and the second assembly cavity (2102) is sleeved and connected with the first connecting pipe (22). The limiting portion (213) forms the first limiting piece (30).
3. The throttling stop valve according to claim 2, characterized in that One of the end of the valve body (10) and the inner wall of the connecting head (21) is provided with a sealing conical surface (11), and the other is provided with a sealing step (211), the sealing step (211) is in abutting connection with the sealing conical surface (11) to realize linear sealing.
4. The throttling stop valve according to claim 3, characterized in that The limiting portion (213) and the throttling assembly (40) have a gap along the axial direction; And / or, a gap is formed between the outer wall of the throttling assembly (40) and the inner wall of the valve cavity (101).
5. The throttling stop valve according to claim 2, wherein The throttling stop valve further comprises a first filter structure (50), at least part of the first filter structure (50) is arranged between the first connecting pipe (22) and the limiting portion (213) along the axial direction, and the connecting head (21), the first connecting pipe (22) and the first filter structure (50) are welded and fixed.
6. The throttling stop valve according to claim 1, wherein The inner wall of the valve cavity (101) is recessed to form a first clamping groove (104), the first limiting piece (30) is installed in the first clamping groove (104) and at least partially protrudes from the first clamping groove (104), so that the first limiting piece (30) can be axially stopped at one end of the throttling assembly (40) close to the first opening (102).
7. The throttling stop valve according to claim 6, characterized in that The throttling stop valve further comprises a first filter structure (50), at least part of the first filter structure (50) is arranged between the throttling assembly (40) and the first limiting piece (30) along the axial direction.
8. The throttling stop valve according to claim 1, characterized by The joint assembly (20) comprises a connecting head (21) and a first connecting pipe (22), one of the end of the valve body (10) and the inner wall of the connecting head (21) is provided with a first sealing surface (12), and the other is provided with a second sealing surface (212); The connecting head (21) is sleeved and threadedly connected to the valve body (10), the first connecting pipe (22) penetrates the connecting head (21), and one end of the first connecting pipe (22) close to the valve body (10) is provided with a connecting section (221), the first sealing surface (12) and the second sealing surface (212) can abut and clamp the connecting section (221) with the movement of the connecting head (21) towards the valve body (10).
9. Throttle stop valve according to any of claims 1-8, characterized in that The throttling stop valve further comprises a second filter structure (60), and the valve body (10) is further provided with a second opening (103) that is arranged on the circumferential side of the valve cavity (101) and communicates with the valve cavity (101), wherein the second filter structure (60) is press-fitted in the second opening (103); Alternatively, the inner wall of the valve cavity (101) is provided with a limiting step (13), and the limiting step (13) is arranged at one end of the throttling assembly (40) away from the connector assembly (20) in the axial direction, wherein at least part of the second filter structure (60) is clamped between the limiting step (13) and the throttling assembly (40) in the axial direction.
10. The throttling stop valve according to claim 1, characterized in that, The inner wall of the valve cavity (101) is recessed to form a first sealing groove (106), the first sealing groove (106) is provided with a first sealing element (15), and the first sealing element (15) at least partially protrudes from the first sealing groove (106) and abuts against the throttling assembly (40).
11. The throttling stop valve according to claim 1, characterized in that The throttling stop valve further comprises a stop valve core (70), a second limiting element (14) and a valve cap (16), the stop valve core (70) is movably installed in the valve cavity (101), and the outer wall of the stop valve core (70) is recessed to form a second sealing groove (701), the second sealing groove (701) is provided with a second sealing element (71), and the stop valve core (70) is movably sealed with the inner wall of the valve cavity (101) through the second sealing element (71); The inner wall of the valve cavity (101) is recessed to form a second clamping groove (105), the second limiting element (14) is installed in the second clamping groove (105) and at least partially protrudes from the second clamping groove (105), so that the second limiting element (14) can be axially stopped at one end of the stop valve core (70) away from the first opening (102); The valve cap (16) is sleeved on one end of the valve body (10) away from the first opening (102) and is connected with the valve body (10).
12. An air conditioning system characterized by, The throttling stop valve comprises the throttling stop valve according to any one of claims 1-11. The throttling stop valve comprises the throttling stop valve according to any one of claims 1-11.