Stop valve and air conditioner

Abstract

The stop valve comprises a valve body, a first valve seat and a valve element assembly, and a valve cavity is formed in the valve body; the first valve seat and the valve body are arranged in a split mode, at least part of the first valve seat is arranged in the valve cavity, a valve chamber is defined by the first valve seat and the valve body, the first valve seat is fixedly connected with the valve body, and the side, away from the valve chamber, of the first valve seat is connected with a first pipe; the valve element assembly is arranged in the valve chamber and comprises a static valve element and a movable valve element, the static valve element is arranged on the first valve seat, the static valve element is provided with a valve port communicating with the valve chamber and the first pipe, and the movable valve element can move relative to the static valve element so as to open or close the valve port. According to the stop valve, the first valve seat and the valve body are arranged in a split mode, the valve body and the first valve seat are simple in structure, flaws are not prone to occurring in the production process, the defective rate is low, and then the production cost of the stop valve can be reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of valves, in particular to a stop valve and an air conditioner. BACKGROUND

[0002] The stop valve is widely used in the pipeline of the air conditioning system for controlling the opening and closing of the pipeline. In order to solve the problems existing in the traditional stop valve (the valve core is axially moved to open the valve port through the thread, so the traditional stop valve has the problems of low opening and closing efficiency and easy damage of the thread), the inventor knows that a stop valve with a static valve core and a dynamic valve core arranged in the valve body appears, the dynamic valve core abuts against the static valve core, and is driven to rotate relative to the static valve core through the rotation of the valve rod, so that the dynamic valve core is switched between the valve ports exposed or blocked by the static valve core, so as to open or close the stop valve. The valve core under this structure no longer needs to be axially moved through the thread, so the problems of low opening and closing efficiency and easy damage of the thread existing in the traditional stop valve are solved.

[0003] However, in order to fixedly connect the static valve core on the valve body of this kind of stop valve, the mounting position of the static valve core needs to be arranged on the valve body, so that the valve body is a special-shaped structure, and the valve body is often produced in an integral molding manner, which not only makes the design and production of the valve body difficult, but also the special-shaped valve body is prone to defects in the production process, resulting in a high rate of defective valve bodies, thereby increasing the production cost of the stop valve. CONTENT OF THE UTILITY MODEL

[0004] Therefore, it is necessary to provide a stop valve with low defective rate and an air conditioner.

[0005] A stop valve comprises:

[0006] A valve body, a valve cavity is arranged in the valve body;

[0007] A first valve seat, the first valve seat is arranged separately from the valve body, the first valve seat is at least partially arranged in the valve cavity, and a valve chamber is formed by the first valve seat and the valve body, the first valve seat is fixedly connected with the valve body, and a first pipe is connected to the side of the first valve seat away from the valve chamber;

[0008] A valve core assembly is arranged in the valve chamber, the valve core assembly comprises a static valve core and a dynamic valve core, the static valve core is arranged in the first valve seat, and the static valve core is provided with a valve port capable of communicating the valve chamber and the first pipe, and the dynamic valve core is capable of rotating relative to the static valve core to open or close the valve port.

[0009] In one of the embodiments, the first valve seat comprises a ring-shaped main body and a supporting portion protruding from the inner circumferential wall of the main body, the outer circumferential wall of the main body is attached to the inner circumferential wall of the valve body, and the inner circumferential wall of the main body and the supporting portion jointly define a first channel which is in communication with the valve port; the outer circumferential wall of the first pipe is attached to the inner circumferential wall of the main body, and the first pipe abuts against the side of the supporting portion away from the valve chamber, and the first channel is in communication with the first pipe.

[0010] In one of the embodiments, the static valve core is at least partially located in the space defined by the inner circumferential wall of the main body, the outer lateral wall of the static valve core is provided with a protruding portion or a recessed portion, and the inner circumferential wall of the main body is provided with a recessed portion or a protruding portion which is in rotational stop cooperation with the protruding portion or the recessed portion.

[0011] In one of the embodiments, the stop valve further comprises a first sealing member, the supporting portion is a ring-shaped flange extending along the inner circumferential wall of the main body, and a first groove extending along the circumference of the ring-shaped flange is formed in the side of the ring-shaped flange away from the valve chamber,

[0012] The first sealing member is arranged in the first groove, and the first sealing member is in pressing cooperation with the static valve core to seal the static valve core and the ring-shaped flange.

[0013] In one of the embodiments, the stop valve further comprises a mounting plate, and the one end of the valve body provided with the first valve seat and the end of the first valve seat away from the static valve core are fixedly connected to the mounting plate.

[0014] In one of the embodiments, the stop valve further comprises a valve rod, the valve rod is at least partially arranged in the valve chamber, the valve rod is connected with the dynamic valve core, and the valve rod can rotate around its own axis to drive the dynamic valve core to rotate to open or close the valve port.

[0015] In one of the embodiments, the valve rod comprises a first segment and a second segment which are connected in sequence along the axial direction of the valve rod, the first segment is connected with the dynamic valve core, and the second segment is provided with a lap portion at the end close to the first segment;

[0016] The valve body is provided with a first end and a second end which are oppositely distributed, and the first valve seat is located at the first end of the valve body.

[0017] The stop valve further comprises a fastening connecting member and a second valve seat,

[0018] The second valve seat is at least partially located in the valve chamber and is fixedly connected to the second end of the valve body, the fastening connecting member is mounted on the second valve seat, the fastening connecting member is sleeved on the outer periphery of the second segment, and the fastening connecting member abuts against the lap portion.

[0019] In one of the embodiments, the valve stem further comprises a third section connected with the second section, the second section being located between the first section and the third section,

[0020] The stop valve further comprises a limiting member limiting the rotation angle of the valve stem, the second valve seat being sleeved on the periphery of the limiting member and fixedly connected with the limiting member,

[0021] The fastening member is located between the limiting member and the overlapping portion, and the side of the fastening member away from the overlapping portion is in abutment with the limiting member;

[0022] The limiting member comprises a limiting sleeve sleeved on the periphery of the third section and in a ring shape, and a stop portion provided on the inner circumferential wall of the limiting sleeve, the stop portion being two in number and arranged in a circumferential direction of the limiting sleeve, and at least part of the third section being located between the two stop portions.

[0023] In one of the embodiments, the stop valve further comprises a flexible adjusting member, the flexible adjusting member being sleeved on the periphery of the second section, and the flexible adjusting member being in abutment between the fastening member and the overlapping portion.

[0024] The application further provides an air conditioner comprising the stop valve according to any one of the above embodiments.

[0025] Compared with the prior art, the stop valve provided by the application uses a valve body and a first valve seat arranged in a split manner, and the valve body and the first valve seat have simple structures, are not prone to defects in the production process, have a low rate of defective products, and can further reduce the production cost of the stop valve. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only show some of the embodiments of the application, and for those skilled in the art, other drawings can also be obtained from these drawings without any creative effort.

[0027] Figure 1 It is an exploded view of the stop valve according to an embodiment of the application;

[0028] Figure 2 It is a perspective view of the stop valve according to an embodiment of the application;

[0029] Figure 3 It is Figure 2 It is a sectional view of A in FIG. 4.

[0030] REFERENCE SIGNS:

[0031] 10. Valve body; 101. Valve cavity; 102. Opening; 103. Valve chamber; 104. First end; 105. Second end; 106. Flaring; 107. First space; 110. First pipe; 120. Second pipe; 130. Mounting plate; 131. Mounting hole; 20. First valve seat; 210. Main body; 211. Recess; 220. Support; 221. First channel; 222. First groove; 223. 30. First sealing element; 310. Valve core assembly; 311. Static valve core; 320. Protrusion; 321. Moving valve core; 40. Valve port; 410. Valve stem; 420. First section; 421. Second section; 422. Overlap section; 430. Third section; 510. Fastening connection; 520. Second valve seat; 530. Limiting element; 531. Limiting sleeve; 532. Stop; 60. Wear-resistant element; 70. Flexible adjusting element. Detailed Implementation

[0032] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0033] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application's specification are for illustrative purposes only and do not represent the only possible implementation.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0035] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0036] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used in this application includes any and all combinations of one or more of the associated listed items.

[0037] Please see Figures 1 to 3 This application provides a shut-off valve, including a valve body 10, a first valve seat 20, and a valve core assembly 30. The valve body 10 contains a valve chamber 101. The first valve seat 20 is separately disposed from the valve body 10, and is at least partially located within the valve chamber 101, forming a valve chamber 103 with the valve body 10. The first valve seat 20 is fixedly connected to the valve body 10, and a first pipe 110 is connected to the side of the first valve seat 20 away from the valve chamber 103. The valve core assembly 30 is disposed within the valve chamber 103 and includes a stationary valve core 310 and a moving valve core 320. The stationary valve core 310 is located on the first valve seat 20 and has a valve port 321 that connects the valve chamber 103 and the first pipe 110. The moving valve core 320 can move relative to the stationary valve core 310 to open or close the valve port 321.

[0038] In this embodiment, by using a separate valve body 10 and a first valve seat 20, the stationary valve core 310 is directly placed on the first valve seat 20, and then the first valve seat 20 is fixedly connected to the valve body 10. The stationary valve core 310, the first valve seat 20 and the valve body 10 can be directly installed. Moreover, since the structure of the valve body 10 and the first valve seat 20 is simple, there are not many defects during the production process, the defect rate is low, and the production cost of the gate valve can be reduced.

[0039] Furthermore, the valve body 10 is cylindrical with a circular cross-section, which facilitates the production of the valve body 10 and makes the installation of the valve core assembly 30, valve stem 40, etc., easier, thus simplifying the installation of the shut-off valve. In another embodiment, the valve body can also be a conical cylinder, in which case the longitudinal section of the valve body is trapezoidal. In other embodiments, the valve body can also be a square prism, frustum, or other cylindrical shape, which is not limited in this application. It should be explained that, in this embodiment, "cylindrical" means having an internal cavity and at least one opening communicating with that cavity.

[0040] Understandably, the valve body 10 is also provided with an opening 102, and the opening 102 is connected to the valve cavity 101. The first valve seat 20 can extend into the opening 102, and the outer peripheral wall of the first valve seat 20 is fixedly connected to the inner peripheral wall of the opening 102 of the valve body 10. In this way, the connection between the first valve seat 20 and the valve body 10 can be made more stable.

[0041] Furthermore, the valve cavity 101 extends through the valve body 10, which has a first end 104 and a second end 105 distributed opposite to each other. A first valve seat 20 is disposed at the first end 104, and a sealing assembly for sealing the valve cavity 101 is provided at the second end 105 to prevent fluid leakage from the shut-off valve. This application does not limit the sealing assembly.

[0042] Furthermore, a flared end 106 is provided on the side wall of the valve body 10, that is, the flared end 106 is located between the first end 104 and the second end 105. The flared end 106 is connected to the valve chamber 103 and is used to connect the second pipe 120. The second pipe 120 is connected to the valve chamber 103 through the flared end 106, so that fluid flows into or out of the valve chamber 103 from the flared end 106. When the valve port 321 is in the open state, the first pipe 110, the valve chamber 103, and the second pipe 120 are connected; when the valve port 321 is in the closed state, the valve chamber 103 is disconnected from the first pipe 110, or the valve chamber 103 is disconnected from the second pipe 120.

[0043] Understandably, one of the first pipe 110 and the second pipe 120 serves as the inlet for fluid entering the shut-off valve, and the other serves as the outlet for fluid exiting the shut-off valve. Illustratively, when the shut-off valve is applied in an air conditioner, and the air conditioner is in cooling mode, the first pipe 110 serves as the inlet for fluid entering the shut-off valve, while the second pipe 120 serves as the outlet for fluid exiting the shut-off valve; when the air conditioner is in heating mode, the second pipe 120 serves as the inlet for fluid entering the shut-off valve, while the first pipe 110 serves as the outlet for fluid exiting the shut-off valve.

[0044] Furthermore, the movable valve core 320 can move relative to the stationary valve core 310 to open or close the valve port 321. Optionally, the movable valve core can open or close the valve port 321 by moving along the height direction of the valve cavity 101, or the movable valve core 320 can open or close the valve port 321 by rotating relative to the stationary valve core 310. This application does not limit this.

[0045] Understandably, the shut-off valve also includes a valve stem 40, which is at least partially located in the valve chamber 103. The valve stem 40 is connected to the movable valve core 320, and the valve stem 40 can drive the movable valve core 320 to move, thereby opening or closing the valve port 321. This ensures that the movable valve core 320 moves along a preset path, preventing the movable valve core 320 from deflecting and thus preventing internal leakage of the shut-off valve.

[0046] Taking a shut-off valve that opens or closes the valve port 321 by rotating the moving valve core 320 relative to the stationary valve core 310 as an example, the working principle of this shut-off valve is as follows: the valve stem 40 can rotate around its own axis, thereby driving the moving valve core 320 to rotate relative to the stationary valve core 310, thus opening or closing the valve port 321. When the valve stem 40 drives the moving valve core 320 to rotate to a position that avoids blocking the valve port 321 on the stationary valve core 310, the valve port 321 is in the open state, and the first pipe 110, valve chamber 103, and second pipe 120 are connected, allowing fluid to flow from the first pipe 110 to the valve chamber 103 and then out through the second pipe 120; when the valve stem 40 drives the moving valve core 320 to rotate to a position that blocks the valve port 321 on the stationary valve core 310, the valve port 321 is in the closed state, the first pipe 110, valve chamber 103, and second pipe 120 are disconnected, and the fluid stops flowing.

[0047] Schematic illustration: The movable valve core 320 has a snap-fit ​​groove. The end of the valve stem 40 near the movable valve core 320 can be inserted into the snap-fit ​​groove and engaged with it, thus allowing the valve stem 40 to rotate and drive the movable valve core 320 to rotate. In other embodiments, the valve stem 40 can also drive the movable valve core 320 in other ways, such as by integrally forming the valve stem 40 and the movable valve core 320, or by welding the valve stem 40 and the movable valve core 320. This application does not limit this, as long as the valve stem 40 can drive the movable valve core 320 to rotate when it rotates. Specifically, the movable valve core 320 has two mating grooves spaced apart along the circumferential direction. The end of the valve stem 40 can connect to both of these mating grooves simultaneously, thereby achieving a more stable snap-fit ​​and rotation between the two.

[0048] Furthermore, the number of valve ports 321 can be set to one or more. Preferably, two are used, and the two valve ports 321 are rotationally symmetrical about the center of the stationary valve core 310. This effectively increases the flow area and the flow efficiency of the shut-off valve. Since the shut-off valve opens and closes the valve ports 321 through the relative rotation between the moving valve core 320 and the stationary valve core 310, the rotational symmetrical arrangement of the valve ports 321 about the center of the stationary valve core 310 facilitates the opening and closing of the valve ports 321 by the rotating moving valve core 320.

[0049] Specifically, the valve port 321 is configured as a fan shape, and the portion of the moving valve core 320 that blocks the valve port 321 is also configured as a fan shape. Thus, the fan-shaped valve port 321 is more suitable for the circular stationary valve core 310, maximizing the flow area of ​​the valve port 321 within the same size constraints. In other embodiments, the valve port 321 can also be circular, triangular, or rectangular, as long as it can be covered and blocked by the passive valve core 320; this application does not impose any limitations on this.

[0050] Furthermore, both the valve body 10 and the first valve seat 20 are made of stainless steel. This ensures the mechanical strength of the gate valve, and when the fluid in the valve chamber 103 is corrosive, the stainless steel material prevents the valve body 10 and the first valve seat 20 from being corroded by the fluid in the valve chamber 103. In other embodiments, the valve body and the first seat can also be made of other materials, and this application does not limit this. Both the stationary valve core 310 and the moving valve core 320 are made of ceramic material. Ceramic material has high hardness, is not easily deformed, has a smooth surface, and low friction, allowing the valve stem 40 to rotate the moving valve core 320 relative to the stationary valve core 310 with minimal torque, thereby closing the valve port 321. In other embodiments, the stationary valve core 310 and the moving valve core 320 can also be made of other materials, such as brass, to reduce costs. Brass also has good sealing performance due to its low hardness. This application does not limit this.

[0051] In one embodiment, the first valve seat 20 includes an annular main body 210 and a support portion 220 protruding from the inner peripheral wall of the main body 210. The support portion 220 is disposed on the inner peripheral wall of the main body 210 and is used to support the stationary valve core 310. The outer peripheral wall of the main body 210 is attached to the inner peripheral wall of the valve body 10. The inner peripheral wall of the main body 210 and the support portion 220 together define a first channel 221, which communicates with the valve port 321. The outer peripheral wall of the first pipe 110 is attached to the inner peripheral wall of the main body 210, and the first pipe 110 abuts against the side of the support portion 220 away from the valve chamber 103. The first channel 221 communicates with the first pipe 110. Thus, the support portion 220 can assist in the positioning of the stationary valve core 310 on the first valve seat 20, simplify the assembly of the shut-off valve, and better support the stationary valve core 310.

[0052] Furthermore, when valve port 321 is in the closed state, the first channel 221 is still connected to the first pipe 110. In this way, the flow of fluid in the shut-off valve will not be affected.

[0053] It should be noted that when the valve body 10 is cylindrical, the main body 210 is an annular shape. When the valve body 10 is rectangular, the main body 210 is a square annular shape. In other embodiments, the main body can also be an annular shape of other shapes, as long as the annular shape can fit the inner wall of the valve body, and this application does not impose any restrictions on this.

[0054] In one embodiment, the stationary valve core 310 is at least partially located within the space defined by the inner peripheral wall of the main body 210. The outer peripheral wall of the stationary valve core 310 is provided with a protrusion 311 or a recess, and the inner peripheral wall of the main body 210 is provided with a recess 211 or a protrusion that mates with the protrusion 311 or the recess. This prevents the stationary valve core 310 from rotating relative to the valve body 10, thereby preventing fluid leakage from the connection between the stationary valve core 310 and the first valve seat 20 and improving the stability of the shut-off valve.

[0055] like Figure 1 As shown, in this embodiment, the outer wall of the stationary valve core 310 is provided with a protrusion 311, and the inner peripheral wall of the main body 210 is provided with a recess 211 that mates with the protrusion 311. Furthermore, there are two protrusions 311 and two recesses 211 to improve the anti-rotation effect. In other embodiments, the number of protrusions 311 and recesses 211 may be other than those specified in this application.

[0056] In one embodiment, the shut-off valve further includes a first sealing element 223. The support portion 220 is an annular flange extending along the inner peripheral wall of the main body portion 210. A first groove 222 extending circumferentially along the annular flange is formed on the side of the annular flange opposite to the valve chamber 103. The first sealing element 223 is disposed in the first groove 222 and is press-fitted with the stationary valve core 310 to seal the stationary valve core 310 and the annular flange. This improves the sealing degree between the stationary valve core 310 and the first valve seat 20, prevents fluid leakage from the connection between the stationary valve core 310 and the first valve seat 20, and thus improves the stability of the shut-off valve.

[0057] In one embodiment, the shut-off valve further includes a mounting plate 130, with one end of the valve body 10 having a first valve seat 20 and the end of the first valve seat 20 away from the stationary valve core 310 both fixedly connected to the mounting plate 130. This facilitates the installation of the shut-off valve on other equipment.

[0058] Furthermore, a notch is provided at the end where the first valve seat 20 connects to the mounting plate 130. This notch, together with the inner peripheral wall of the mounting plate 130 and the valve body 10, forms a first space 107. A welding ring is housed in the first space 107. After the welding ring melts, it can weld the first valve seat 20, the valve body 10, and the mounting plate 130 together. This improves the mechanical strength and stability of the shut-off valve. On the other hand, using a single welding ring to achieve the interconnection of the three components improves welding efficiency.

[0059] Furthermore, the mounting plate 130 is provided with mounting holes 131, which are correspondingly arranged with the first channel 221. In the circumferential direction of the valve body 10, the inner circumferential wall of the mounting hole 131 is attached to the outer circumferential wall of the end of the first valve seat 20 away from the stationary valve core 310. In the axial direction of the valve body 10, the first end 104 of the valve body 10 abuts against the edge of the mounting hole 131. In this way, the welding ring can be attached to the mounting plate 130, the inner circumferential wall of the valve body 10, and the outer circumferential wall of the first valve seat 20 at the same time.

[0060] In one embodiment, the valve stem 40 includes a first segment 410 and a second segment 420 connected sequentially along its own axial direction. The first segment 410 is connected to the movable valve core 320, and the end of the second segment 420 near the first segment 410 has a protruding overlapping portion 421. The valve body 10 has a first end 104 and a second end 105 that are distributed opposite to each other, and the first valve seat 20 is located at the first end 104 of the valve body 10.

[0061] In this embodiment, the shut-off valve further includes a fastening connector 510 and a second valve seat 520. The second valve seat 520 is at least partially located within the valve chamber 103 and is fixedly connected to the second end 105 of the valve body 10. The fastening connector 510 is installed on the second valve seat 520 and is sleeved on the second section 420, with the fastening connector 510 abutting against the overlapping portion 421. Thus, the valve stem 40 abuts against the fastening connector 510 through the overlapping portion 421. The fastening connector 510 can limit the valve stem 40 in the axial direction, preventing the valve stem 40 from moving away from the stationary valve core 310. The second valve seat 520 provides a fixed mounting point for the fastening connector 510, preventing the fastening connector 510 from moving away from the stationary valve core 310. This ensures that the stationary valve core 310 and the moving valve core 320 are always in contact, so that the fluid can only flow through the opening on the stationary valve core 310, avoiding internal leakage of the fluid.

[0062] Schematic illustration: The fastening connector 510 has external or internal threads, and the second valve seat 520 has internal or external threads that match those of the fastening connector 510. The fastening connector 510 and the second valve seat 520 are threadedly connected. This not only facilitates the installation of the fastening connector 510 and the second valve seat 520, but also provides a clamping force that allows the fastening connector 510 to press against the overlapping portion 421 on the second section 420 of the valve stem 40. In other embodiments, the fastening connector and the second valve seat can be connected in other ways, and this application does not limit this.

[0063] In one embodiment, the valve stem 40 further includes a third segment 430 connected to the second segment 420, the second segment 420 being located between the first segment 410 and the third segment 430. The shut-off valve also includes a limiting member 530 that restricts the rotation angle of the valve stem 40, a second valve seat 520 being sleeved around the limiting member 530 and fixedly connected to the limiting member 530, and a fastening connector 510 being located between the limiting member 530 and the overlapping portion 421, with the side of the fastening connector 510 away from the overlapping portion 421 abutting against the limiting member 530. Thus, the limiting member 530 can not only limit the fastening connection 510 along the axial direction of the valve stem 40, thereby indirectly limiting the valve stem 40 in its axial direction to prevent loosening between the valve stem 40 and the moving valve core 320, but also facilitates the switching of the valve stem 40 in the two states of opening and closing the valve port 321, making the switching between the two states of opening and closing the valve port 321 more precise and further preventing fluid leakage.

[0064] Furthermore, the third segment 430 extends at least partially beyond the valve body 10. That is, along the height direction of the valve body 10, the valve stem 40 is divided into an upper third segment 430, a middle second segment 420, and a lower first segment 410, with the first segment 410 and the second segment 420 both located within the valve cavity 101. The end of the third segment 430 furthest from the second segment 420 extends into the valve body 10 for connection with an external drive component, thereby driving the valve stem 40 to rotate via the drive component.

[0065] For example, the driving component can be either an external tool or a motor, i.e., manual operation and motor-driven operation are both options. In this embodiment, a motor is preferred, as it is more labor-saving and can achieve intelligent operation, enabling rapid shutdown when a leak occurs in the pipeline. The connection method between the third segment 430 and the motor can be selected at will, and this application does not impose any restrictions on it.

[0066] As a preferred option, the first segment 410, the second segment 420, and the third segment 430 are integrated into one structure, which makes the structure of the valve stem 40 more stable and easier to process.

[0067] In one embodiment, the limiting member 530 includes a ring-shaped limiting sleeve 531 sleeved around the third segment 430 and a stop portion 532 disposed on the inner peripheral wall of the limiting sleeve 531. There are two stop portions 532, which are arranged at intervals along the circumference of the limiting sleeve 531, and at least a portion of the third segment 430 is located between the two stop portions 532. Thus, the limiting member 530 has a simple structure and can effectively stop the third segment 430, preventing excessive movement of the valve stem 40 that could cause fluid leakage or affect the normal flow of fluid.

[0068] Furthermore, the second segment 420 has a circular cross-section, which reduces the friction between the second segment 420 and the fastening connector 510 during rotation, resulting in less wear and making it easier to rotate the valve core 320. The third segment 430 has at least one cross-section located between the two stop portions 532, making it easier to be stopped by the stop portions 532 and stop rotation in a timely manner.

[0069] Furthermore, the gate valve also includes an anti-wear component 60, which is clamped between the fastening connector 510 and the overlapping portion 421, and the anti-wear component 60 is tightly fitted against the fastening connector 510 and the overlapping portion 421. Since the moving valve core 320 and the stationary valve core 310 are in a press-rotational engagement for opening and closing, there will be both axial rotation and axial load between the second section 420 of the valve stem 40 and the fastening connector 510. The anti-wear component 60 can bear the axial rotation and axial load between the two, eliminating direct wear between them. This prevents a decrease in the pressure applied by the valve stem 40 to the moving valve core 320 and the stationary valve core 310, ensuring that the moving valve core 320 and the stationary valve core 310 always maintain good contact, and also prevents fluid leakage, thus extending the service life of the gate valve.

[0070] For example, the wear-resistant component 60 is a bearing. The bearing ensures smooth relative rotation between the valve stem 40 and the fastening connection 510, and also prevents wear between them. Furthermore, the presence of the bearing makes the rotation between the valve stem 40 and the fastening connection 510 smoother and less strenuous, effectively reducing the torque required for the rotation of the valve stem 40 and the stationary valve core 310.

[0071] Furthermore, the bearing component is a thrust ball bearing. Ordinary deep groove ball bearings consist of an inner ring and an outer ring, and can only withstand loads in the diametrical direction. Thrust ball bearings consist of an upper ring and a lower ring, and compared to ordinary deep groove ball bearings, can better withstand axial loads.

[0072] In one embodiment, the shut-off valve further includes a flexible adjusting member 70, which is sleeved on the outer periphery of the second section 420 and abuts against the fastening connector 510 and the overlapping portion 421. It is understood that, due to the tight fit between the stationary valve core and the moving valve core, and the valve opening or closing via relative rotation, after a period of use, both the stationary and moving valve cores will wear, causing changes in their heights. This results in a height difference between the stationary valve core and the valve stem, preventing the valve stem from pressing the stationary and moving valve cores together. This loosening of the pressure between the stationary and moving valve cores leads to fluid leakage, affecting the operation of the equipment using the shut-off valve. In this embodiment, the flexible adjusting member 70 compensates for this height difference, ensuring that the valve stem 40 continuously presses the stationary valve core 310 and the moving valve core 320 together, maintaining a constant pressure between them and preventing fluid leakage.

[0073] Furthermore, the flexible adjustment element 70 is made of an elastic material, thus ensuring that it can always compensate for the aforementioned height difference. Illustratively, the elastic material may be a disc spring, compression spring, wave spring, etc., but this application does not limit this, as long as the elastic material can compensate for the aforementioned height difference.

[0074] Furthermore, the flexible adjustment member 70 can be disposed between the wear-resistant member 60 and the overlapping portion 421. In this case, the flexible adjustment member 70 abuts against the wear-resistant member 60 and the fastening connector 510. Alternatively, the flexible adjustment member 70 can be disposed between the wear-resistant member 60 and the fastening connector 510. In this case, the flexible adjustment member 70 abuts against the overlapping portion 421 through the fastening connector 510. This application does not impose any restrictions on this.

[0075] This application also provides an air conditioner including a shut-off valve as described in any of the above embodiments.

[0076] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0077] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the scope of protection of this application. Therefore, the patent protection scope of this application should be determined by the appended claims.

Claims

1. A shut-off valve, characterized in that, include: Valve body (10), wherein a valve cavity (101) is provided inside the valve body (10); A first valve seat (20) is separately disposed from the valve body (10). The first valve seat (20) is at least partially disposed in the valve cavity (101) and forms a valve chamber (103) with the valve body (10). The first valve seat (20) is fixedly connected to the valve body (10). A first pipe (110) is connected to the side of the first valve seat (20) away from the valve chamber (103). A valve core assembly (30) is disposed in the valve chamber (103). The valve core assembly (30) includes a stationary valve core (310) and a moving valve core (320). The stationary valve core (310) is disposed on the first valve seat (20), and the stationary valve core (310) has a valve port (321) that can connect the valve chamber (103) and the first pipe (110). The moving valve core (320) can rotate relative to the stationary valve core (310) to open or close the valve port (321).

2. The shut-off valve according to claim 1, characterized in that, The first valve seat (20) includes an annular main body (210) and a support (220) protruding from the inner peripheral wall of the main body (210). The outer peripheral wall of the main body (210) is attached to the inner peripheral wall of the valve body (10), and the inner peripheral wall of the main body (210) and the support (220) together define a first channel (221), which is connected to the valve port (321). The outer peripheral wall of the first tube (110) is attached to the inner peripheral wall of the main body (210), and the first tube (110) abuts against the side of the support (220) away from the valve chamber (103), and the first channel (221) is connected to the first tube (110).

3. The shut-off valve according to claim 2, characterized in that, The stationary valve core (310) is at least partially located within the space defined by the inner peripheral wall of the main body (210). The outer peripheral wall of the stationary valve core (310) is provided with a protrusion or a recess, and the inner peripheral wall of the main body (210) is provided with a recess or a protrusion that engages with the protrusion or recess to prevent rotation.

4. The shut-off valve according to claim 2, characterized in that, The shut-off valve further includes a first sealing element (223), and the support portion (220) is an annular flange extending along the inner peripheral wall of the main body portion (210). A first groove (222) extending circumferentially along the annular flange is provided on the side of the annular flange opposite to the valve chamber (103). The first sealing element (223) is disposed in the first groove (222), and the first sealing element (223) is pressed together with the stationary valve core (310) to seal the stationary valve core (310) and the annular flange.

5. The shut-off valve according to any one of claims 1 to 4, characterized in that, The shut-off valve also includes a mounting plate (130), and the valve body (10) is fixedly connected to the mounting plate (130) at one end where the first valve seat (20) is located and at the other end of the first valve seat (20) away from the stationary valve core (310).

6. The shut-off valve according to any one of claims 1 to 4, characterized in that, The shut-off valve also includes a valve stem (40), which is at least partially located in the valve chamber (103). The valve stem (40) is connected to the moving valve core (320), and the valve stem (40) is rotatable about its own axis to drive the moving valve core (320) to rotate, thereby opening or closing the valve port (321).

7. The shut-off valve according to claim 6, characterized in that, The valve stem (40) includes a first section (410) and a second section (420) connected sequentially along its own axial direction. The first section (410) is connected to the moving valve core (320), and the second section (420) has an overlapping part (421) protruding from the end near the first section (410). The valve body (10) has a first end (104) and a second end (105) that are relatively distributed, and the first valve seat (20) is located at the first end (104) of the valve body (10); The shut-off valve also includes a fastening connector (510) and a second valve seat (520). The second valve seat (520) is at least partially located inside the valve chamber (103) and is fixedly connected to the second end (105) of the valve body (10); the fastening connector (510) is installed on the second valve seat (520) and is sleeved around the second section (420), and the fastening connector (510) abuts against the overlapping part (421).

8. The shut-off valve according to claim 7, characterized in that, The valve stem (40) further includes a third section (430) connected to the second section (420), the second section (420) being located between the first section (410) and the third section (430). The shut-off valve further includes a limiting member (530) that restricts the rotation angle of the valve stem (40). The second valve seat (520) is sleeved around the limiting member (530) and is fixedly connected to the limiting member (530). The fastening connector (510) is located between the limiting member (530) and the overlapping portion (421), and the fastening connector (510) abuts against the limiting member (530) on the side away from the overlapping portion (421). The limiting member (530) includes a limiting sleeve (531) sleeved around the third segment (430) and in an annular shape, and a stop portion (532) provided on the inner peripheral wall of the limiting sleeve (531). There are two stop portions (532) and they are arranged at intervals along the circumference of the limiting sleeve (531). At least a portion of the third segment (430) is located between the two stop portions (532).

9. The shut-off valve according to claim 7, characterized in that, The shut-off valve further includes a flexible adjusting member (70), which is sleeved on the outer periphery of the second section (420) and abuts against the fastening connector (510) and the overlapping portion (421).

10. An air conditioner, characterized in that, Includes the shut-off valve as described in any one of claims 1 to 9.

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