Electric valve

Abstract

The utility model relates to an electric valve which comprises a valve body, a moving part and a movable structure, the movable structure comprises a movable part arranged in the moving part in an internally-sleeved and externally-sleeved mode, a valve cavity is defined in the valve body, the valve body is provided with a first valve port communicating with the valve cavity, and at least part of the movable structure is located in the valve cavity. A spiral sliding groove is formed in the circumferential wall of one of the moving part and the movable part, the other one of the moving part and the movable part is provided with a sliding part located in the sliding groove, the movable structure is arranged to be limited in the circumferential direction and can slide in the axial direction, the moving part is arranged to be limited in the axial direction and can rotate in the circumferential direction, and when the moving part moves, the sliding part can slide in the sliding groove. And the movable structure is driven to move in the direction close to the first valve port to close the first valve port or move in the direction away from the first valve port to open the first valve port. The whole process of opening and closing the first valve port is simple and convenient, the screw pitch is increased through the spiral sliding groove, the transmission efficiency is improved, and the valve opening and closing time can be greatly shortened.

Description

Technical Field

[0001] The present application relates to the field of valve technology, and in particular to an electric valve. Background Art

[0002] Existing electric valves are used to control the connection or disconnection of pipelines, thereby changing the direction of fluid movement or the flow rate of the fluid.

[0003] The axial movement of the moving parts in the current electric valve is achieved through thread transmission. However, due to the limitation of the outer diameter of the thread and the small pitch, the transmission efficiency is low and cannot meet the demand for products with high transmission efficiency. Utility Model Content

[0004] Based on this, it is necessary to provide an electric valve that improves transmission efficiency.

[0005] The present application provides an electric valve, which includes a valve body, a moving part and a movable structure, the movable structure including a movable part arranged inside and outside the moving part, the interior of the valve body defines a valve cavity, the valve body is provided with a first valve port connected to the valve cavity, the movable structure and the moving part are at least partially located in the valve cavity, the moving part and one of the movable parts are provided with a spiral groove on the peripheral wall, the moving part and the other of the movable parts are provided with a sliding part located in the groove, the movable structure is arranged to be circumferentially limited and axially slidable, the moving part is arranged to be axially limited and circumferentially rotatable, and when the moving part rotates, it drives the movable structure to move toward the first valve port to close the first valve port, or to move away from the first valve port to open the first valve port.

[0006] In one embodiment, the moving part is a rotating rod, the movable part is a movable sleeve sleeved around the rotating rod, and the movable structure further includes a piston for opening and closing the first valve port, and the piston is connected to the movable sleeve.

[0007] In one embodiment, the sliding member is provided on the rotating rod, and the sliding groove is located on the movable sleeve.

[0008] In one embodiment, the sliding member is a latch, and the rotating rod is provided with a socket for plugging with the latch.

[0009] In one embodiment, there are two slide grooves, which are staggered in the circumferential direction of the movable sleeve, and both ends of the latch are respectively located in the two slide grooves.

[0010] In one embodiment, a partition is provided in the valve cavity, and the partition divides the valve cavity into a first valve chamber and a second valve chamber. The first valve chamber and the second valve chamber are arranged in sequence along the movement direction of the movable structure. A second valve port connecting the first valve chamber and the second valve chamber is opened on the partition. The first valve port is located on the side wall of the second valve chamber and is arranged opposite to the second valve port. The piston is located in the second valve chamber, and a connecting rod is provided on the piston and passes through the second valve port. The part of the connecting rod located in the first valve chamber is connected to the movable sleeve. When the first valve port is blocked by the piston, the second valve port is in an open state. When the second valve port is blocked by the piston, the first valve port is in an open state.

[0011] In one embodiment, a first connecting hole is formed on the side wall of the first valve chamber and passes through the first valve chamber along the direction of its wall thickness, and a second connecting hole is formed on the side wall of the second valve chamber and passes through the second valve chamber along the direction of its wall thickness. When the first valve port is in an open state, the second connecting hole is connected to the first valve port; when the second valve port is in an open state, the first connecting hole is connected to the second connecting hole through the second valve port.

[0012] In one embodiment, the end walls at both ends of the sliding groove are defined as groove end walls, and when the first valve port or the second valve port is in a closed state, a gap is left between the sliding member and the corresponding groove end wall.

[0013] In one embodiment, the movable structure further includes a valve sleeve arranged on the periphery of the movable rod, the connecting rod is fixedly connected to the valve sleeve, a limiting cavity is formed in the valve sleeve, and one end of the movable sleeve close to the second valve port is constrained in the limiting cavity.

[0014] In one embodiment, a flange is provided on the outer peripheral wall of the movable sleeve, a first spring and a second spring are provided in the limiting cavity, and the flange is located between the first spring and the second spring.

[0015] It can be understood that the presence of the first spring and the second spring prevents direct hard collision contact between the movable sleeve and the valve sleeve and the inserting portion.

[0016] In one embodiment, the valve body further comprises an accommodating chamber, wherein the accommodating chamber is at least partially located in the valve chamber, and the movable member and the moving member are both located in the accommodating chamber.

[0017] In one embodiment, a sleeve is provided in the valve cavity and is sleeved on the periphery of the movable sleeve. A limiting structure for limiting the circumferential rotation of the movable sleeve is provided between the sleeve and the movable sleeve.

[0018] In one embodiment, the inner peripheral wall of the sleeve includes a first plane extending along the movement direction of the movable sleeve, the outer peripheral wall of the movable sleeve has a second plane parallel to the first plane at a position corresponding to the first plane, and the limiting structure includes the first plane and the second plane.

[0019] In one embodiment, there are two first planes, which are spaced apart along the circumference of the sleeve, and each first plane corresponds to one second plane.

[0020] Compared with the prior art, in the electric valve provided by the present application, when the moving part rotates around its own axis, the movable parts and the moving parts arranged on each other realize the sliding cooperation between the sliding part and the spiral slide groove to realize the movable structure approaching or moving away from the first valve port to open and close the first valve port. The entire process of opening and closing the first valve port is simple and convenient, and the spiral slide groove increases the pitch, improves the transmission efficiency, and can greatly shorten the time for opening and closing the valve. For products with low transmission accuracy requirements, it is more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the conventional technology, the following briefly introduces the drawings required for use in the embodiments or the conventional technology descriptions. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 This is a cross-sectional view of an electric valve according to an embodiment of the present application in a state where the first valve port is closed;

[0023] Figure 2 This is a cross-sectional view of the electric valve according to one embodiment of the present application in a state where the second valve port is closed;

[0024] Figure 3 This is a schematic diagram of the assembly structure of the rotating rod and the movable structure in the electric valve according to one embodiment of the present application;

[0025] Figure 4 This is a schematic structural diagram of a rotating rod of an electric valve according to an embodiment of the present application;

[0026] Figure 5 A three-dimensional diagram of a movable sleeve in an electric valve according to an embodiment of the present application;

[0027] Figure 6 A top view of a sleeve in an electric valve according to an embodiment of the present application;

[0028] Figure 7 for Figure 1 The diagram shows a partial structure of the electric valve after the rotating rod and the movable sleeve are assembled;

[0029] Figure 8 for Figure 2 The diagram shows a partial structure diagram of the assembled rotating rod and movable sleeve of the electric valve.

[0030] Reference numerals: 1, valve body; 10, valve cavity; 101, first valve chamber; 1011, first pipe connection hole; 102, second valve chamber; 1021, first valve port; 1022, second pipe connection hole; 11, valve housing; 12, valve cover; 121, accommodating chamber; 13, partition; 131, second valve port; 2, moving part; 21, sliding part; 22, socket; 3, movable structure; 31, movable part; 311, slide groove; 311a, upper groove end wall ; 311b, lower groove end wall; 3111, first sliding section; 3112, second sliding section; 3113, first slide; 3114, second slide; 3115, gap; 312, second plane; 313, flange; 32, piston; 33, connecting rod; 331, insert; 34, valve sleeve; 35, limiting cavity; 36, first spring; 37, second spring; 38, sealing ring; 4, sleeve; 41, first plane; 5, limiting structure. DETAILED DESCRIPTION

[0031] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0032] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it may be directly on the other component or there may be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of this application are for illustrative purposes only and do not represent the only implementation method.

[0033] 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 the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0034] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it can mean that the first feature is directly in contact with the second feature, or the first feature and the second feature are indirectly in contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it can mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is higher in level than the second feature. When a first feature is "below," "below," or "below" a second feature, it can mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is lower in level than the second feature.

[0035] Unless otherwise defined, all technical and scientific terms used in the specification of this application have the same meaning as commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in the specification of this application includes any and all combinations of one or more of the relevant listed items.

[0036] To solve the problem of low transmission efficiency, please refer to Figures 1 to 8 The present application provides an electric valve including a valve body 1, a moving part 2 and an active structure 3. Figure 1 and Figure 2 As shown, the interior of the valve body 1 defines a valve cavity 10. The valve body 1 is provided with a first valve port 1021 communicating with the valve cavity 10 at a position corresponding to the valve cavity 10.

[0037] The valve body 1 can be arranged in the up-down direction, or in the front-back direction or in the left-right direction.

[0038] like Figure 1 and Figure 2 As shown, in one embodiment, the valve body 1 includes a valve housing 11 and a valve cover 12. The top of the valve housing 11 is open, and the valve cover 12 blocks the top opening of the valve housing 11 and, together with the valve housing 11, encloses a valve cavity 10. The interior of the valve cover 12 defines an accommodating cavity 121, which is at least partially located within the valve cavity 10.

[0039] like Figures 1 to 3As shown, the movable structure 3 includes a movable part 31, a piston 32 and a valve sleeve 34. The movable part 31 is arranged together with the movable part 2 inside and outside, and both the movable part 2 and the movable part 2 are located in the accommodating chamber 121. A spiral groove 311 is provided on the circumferential wall of one of the movable part 2 and the movable part 31, and the other of the movable part 2 and the movable structure 3 is provided with a sliding part 21 located in the groove 311. The movable structure 3 is arranged to be circumferentially limited and axially slidable, that is, the movable structure 3 cannot rotate around the central axis, but can slide axially. The movable part 2 is arranged to be axially limited and circumferentially rotatable, that is, the movable part 2 cannot move axially, but can rotate around the central axis. Specifically, the movable part 2 is rotatably connected to the valve cover 12 through a bearing component, and the bearing component axially limits the movable part 2, so that the movable part 2 cannot move axially. When the moving part 2 rotates, it drives the movable structure 3 to move in the up and down direction toward the first valve port 1021 to close the first valve port 1021 , or drives the movable structure 3 to move away from the first valve port 1021 to open the first valve port 1021 .

[0040] The spiral chute 311 increases the pitch, thereby improving the movement stroke and transmission efficiency.

[0041] There are many driving methods to realize the rotation of the moving part 2. The moving part 2 can be driven directly by a motor or by combining a motor and a transmission structure. As long as the rotation of the moving part 2 can be realized, it will not be described in detail in this embodiment.

[0042] like Figures 1 to 3 As shown, the moving part 2 is a rotating rod, and the movable part 31 is a movable sleeve arranged on the outer periphery of the rotating rod. The piston 32 is connected to the movable sleeve to open and close the first valve port 1021. In this embodiment, the sliding part 21 is arranged on the rotating rod, and the sliding groove 311 is located on the movable sleeve. There are many structures and arrangements of the sliding part 21. In one embodiment, as shown in FIG. Figure 3 and Figure 4 As shown, the sliding member 21 is a latch, and the rotating rod is provided with a socket 22 for plugging with the latch. In another embodiment, the sliding member 21 is a convex portion integrally formed on the rotating rod.

[0043] In another embodiment, the sliding member 21 is located on the movable sleeve, while the chute 311 is located on the rotating rod. Furthermore, in other embodiments, the movable member 31 is a plunger, and the moving member 2 is a rotating sleeve that fits around the plunger. In this case, the piston 32 is connected to the plunger. In this embodiment, the sliding member 21 is located on the plunger, and the chute 311 is located on the rotating sleeve. Alternatively, a configuration may be employed where the sliding member 21 is located on the rotating sleeve, while the chute 311 is located on the rotating rod.

[0044] It is understandable that when the moving part 2 rotates, the spiral groove 311 cooperates with the sliding part 21 to drive the movable structure 3 to move as a whole. When the movable structure 3 moves, the piston 32 opens or closes the first valve port 1021.

[0045] like Figures 5 to 8 As shown, a sleeve 4 is provided in the accommodating cavity 121 and is sleeved around the outer periphery of the movable sleeve. A limiting structure 5 is provided between the sleeve 4 and the movable sleeve to limit the circumferential rotation of the movable sleeve. The valve sleeve 34 and the sleeve 4 are arranged in sequence along the axial direction of the rotating rod.

[0046] In one embodiment, if Figure 6 As shown, the inner circumferential wall of the sleeve 4 has a first plane 41 extending along the direction of movement of the movable sleeve, and the outer circumferential wall of the movable sleeve has a second plane 312 parallel to the first plane 41 at a position corresponding to the first plane 41. The above-mentioned limiting structure 5 includes the above-mentioned first plane 41 and the second plane 312. Specifically, there are two first planes 41, which are arranged at intervals along the circumference of the sleeve 4, and each first plane 41 corresponds to a second plane 312. The presence of the two first planes 41 not only limits the circumferential rotation of the movable sleeve, but also better guides the movable sleeve as it moves along its own axial direction.

[0047] In addition, the inner circumferential wall of the sleeve 4 includes a first non-circular surface. If the cross-section of the outer circumferential wall of the sleeve 4 is non-circular, the first non-circular surface extends along the length direction of the sleeve 4, and the outer circumferential wall of the movable sleeve has a second non-circular surface matching the first non-circular surface. In another embodiment, the limiting structure 5 includes the above-mentioned first non-circular surface and the second non-circular surface.

[0048] The electric valve may be a three-way valve, a four-way valve or a five-way valve, etc. The following description will take a three-way valve as an example.

[0049] like Figure 1 and Figure 2 As shown, a partition 13 is provided in the valve cavity 10, and the partition 13 divides the valve cavity 10 into a first valve chamber 101 and a second valve chamber 102. The first valve chamber 101 and the second valve chamber 102 are arranged in sequence along the movement direction of the movable structure 3, that is, the first valve chamber 101 and the second valve chamber 102 are arranged in sequence from top to bottom. The above-mentioned accommodating cavity 121 is partially located in the first valve chamber 101. A second valve port 131 connecting the first valve chamber 101 and the second valve chamber 102 is opened on the partition 13. The first valve port 1021 is located on the side wall of the second valve chamber 102 and is arranged opposite to the second valve port 131. In this embodiment, the first valve port 1021 is located on the bottom wall of the second valve chamber 102 and is located below the second valve port 131.

[0050] In addition, a first connecting hole 1011 is formed on the side wall of the first valve chamber 101 and penetrates along the direction of its wall thickness, and a second connecting hole 1022 is formed on the side wall of the second valve chamber 102 and penetrates along the direction of its wall thickness. In one embodiment, the first connecting hole 1011 and the second connecting hole 1022 are arranged opposite each other. In another embodiment, the first connecting hole 1011 and the second connecting hole 1022 are arranged on the same side. Figure 2 As shown, when the first valve port 1021 is in the open state, the second connecting hole 1022 is connected to the first valve port 1021. Figure 1 As shown, when the second valve port 131 is in the open state, the first connecting hole 1011 is connected to the second connecting hole 1022 through the second valve port 131 .

[0051] The inner end walls at both ends of the chute 311 are defined as chute end walls. When the first valve port 1021 or the second valve port 131 is in the closed state, a gap 3115 is left between the latch and the corresponding chute end wall. The upper and lower chute end walls of the chute 311 are respectively the upper chute end wall 311a and the lower chute end wall 311b. In this embodiment, there are two chute 311s, defined as the first chute and the second chute. The first chute includes a first slide section 3111 and a second slide section 3112 arranged sequentially from top to bottom, while the second chute includes a first slide 3113 and a second slide 3114 arranged sequentially from top to bottom. In the vertical direction, a portion of the first slide 3113 is located between the first slide section 3111 and the second slide section 3112. With this arrangement, the two chute 311s are staggered in the circumferential direction of the movable sleeve and staggered in the axial direction of the movable sleeve.

[0052] like Figure 7 As shown, when the first valve port 1021 is in the closed state, one end of the latch is located in the second chute, and a gap is left between the other end of the latch and the lower end wall 311b of the first chute. Figure 8 As shown, when the second valve port 131 is in the closed state, one end of the latch pin is located in the first chute, and a gap is left between the other end of the latch pin and the upper end wall 311a of the second chute. In other words, the two ends of the latch pin are respectively located in the two chute slots 311. The presence of the above gap prevents the slider 21 from contacting the lower end wall 311b of the first chute or the upper end wall 311a of the second chute when the slider 21 slides with the chute 311, thereby preventing the slider 21 from stopping sliding by contacting the lower end wall 311b of the first chute or the upper end wall 311a of the second chute, which would affect the closing of the first valve port 1021 and the second valve port 131 and result in loose valve closure.

[0053] It can be understood that, during the rotation of the rotating rod, the two ends of the latch respectively slide in cooperation with the corresponding sliding grooves 311 , thereby making the movement of the movable structure 3 more stable and reliable.

[0054] like Figure 1 and Figure 2 As shown, the piston 32 is located in the second valve chamber 102, and the piston 32 is provided with a connecting rod 33 that passes through the second valve port 131. The part of the connecting rod 33 located in the first valve chamber 101 is connected to the movable sleeve. When the second valve port 131 is blocked by the piston 32, the first valve port 1021 is in an open state; when the first valve port 1021 is blocked by the piston 32, the second valve port 131 is in an open state.

[0055] like Figure 1 and Figure 2 As shown, the valve sleeve 34 is located within the accommodating chamber 121, below the chute 311, and sleeved around the outer periphery of the movable rod. The connecting rod 33 is fixedly connected to the valve sleeve 34, and a limiting cavity 35 is formed within the valve sleeve 34. In this embodiment, the connecting rod 33 is provided with an insert 331 embedded in the valve sleeve 34. The insert 331 and the valve sleeve 34 together enclose the limiting cavity 35. The end of the movable sleeve near the second valve port 131 is constrained within the limiting cavity 35. This arrangement effectively connects the connecting rod 33 and the movable sleeve.

[0056] In addition, a first spring 36 and a second spring 37 are arranged in sequence from top to bottom in the limiting cavity 35, and the first spring 36 and the second spring 37 are both sleeved on the periphery of the rotating rod. A flange 313 is convexly provided on the outer peripheral wall of the movable sleeve, and the flange 313 is located between the first spring 36 and the second spring 37. In one embodiment, there are at least two flanges 313, and they are arranged at intervals along the circumference of the movable sleeve. In this embodiment, the flange 313 is an annular flange extending along the circumference of the movable sleeve. It can be understood that the presence of the first spring 36 and the second spring 37 avoids direct hard collision contact between the movable sleeve and the valve sleeve 34 and the insert portion 331, and can provide a pre-tightening force for closing the valve, thereby improving the sealing effect when closing the valve.

[0057] A sealing ring 38 is provided between the outer peripheral wall of the valve sleeve 34 and the peripheral wall of the accommodating chamber 121. The sealing ring 38 forms a seal between the valve sleeve 34 and the peripheral wall of the accommodating chamber 121 to prevent the fluid in the first valve chamber 101 from contacting the slide groove 311 and affecting the sliding fit between the sliding member 21 and the slide groove 311.

[0058] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned 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.

[0059] The above-described embodiments merely represent several implementation methods of the present application. 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 a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, all of which fall within the scope of protection of the present application. Therefore, the scope of patent protection for the present application shall be determined by the appended claims.

Claims

1. An electric valve, characterized in that: The invention comprises a valve body (1), a moving part (2) and a movable structure (3), wherein the movable structure (3) comprises a movable part (31) arranged inside and outside the moving part (2), the interior of the valve body (1) defines a valve cavity (10), the valve body (1) is provided with a first valve port (1021) communicating with the valve cavity (10), the movable structure (3) and the moving part (2) are at least partially located in the valve cavity (10), and a spiral sliding groove (311) is provided on the peripheral wall of one of the moving part (2) and the movable part (31). The other of the moving part (2) and the movable part (31) is provided with a sliding part (21) located in the sliding groove (311); the movable structure (3) is arranged to be circumferentially limited and axially slidable; the moving part (2) is arranged to be axially limited and circumferentially rotatable; when the moving part (2) rotates, it drives the movable structure (3) to move in a direction close to the first valve port (1021) to close the first valve port (1021), or to move in a direction away from the first valve port (1021) to open the first valve port (1021).

2. The electric valve according to claim 1, characterized in that: The moving part (2) is a rotating rod, the movable part (31) is a movable sleeve arranged on the periphery of the rotating rod, and the movable structure (3) also includes a piston (32) for opening and closing the first valve port (1021), and the piston (32) is connected to the movable sleeve.

3. The electric valve according to claim 2, characterized in that: The sliding member (21) is arranged on the rotating rod, and the sliding groove (311) is located on the movable sleeve.

4. The electric valve according to claim 3, characterized in that: The sliding member (21) is a latch pin, and the rotating rod is provided with a socket (22) for plugging and cooperating with the latch pin.

5. The electric valve according to claim 4, characterized in that: There are two sliding grooves (311), and the two sliding grooves (311) are staggered in the circumferential direction of the movable sleeve. The two ends of the latch are respectively located in the two sliding grooves (311).

6. The electric valve according to claim 2, characterized in that: A partition (13) is provided in the valve cavity (10), and the partition (13) divides the valve cavity (10) into a first valve chamber (101) and a second valve chamber (102). The first valve chamber (101) and the second valve chamber (102) are arranged in sequence along the movement direction of the movable structure (3). A second valve port (131) is provided on the partition (13) for connecting the first valve chamber (101) and the second valve chamber (102). The first valve port (1021) is located on the side wall of the second valve chamber (102) and is in contact with the second valve port (131). 1) are arranged relative to each other, the piston (32) is located in the second valve chamber (102), and the piston (32) is provided with a connecting rod (33) passing through the second valve port (131), the part of the connecting rod (33) located in the first valve chamber (101) is connected to the movable sleeve, when the first valve port (1021) is blocked by the piston (32), the second valve port (131) is in an open state; when the second valve port (131) is blocked by the piston (32), the first valve port (1021) is in an open state.

7. The electric valve according to claim 6, characterized in that: The side wall of the first valve chamber (101) is provided with a first connecting hole (1011) penetrating along the direction of its wall thickness, and the side wall of the second valve chamber (102) is provided with a second connecting hole (1022) penetrating along the direction of its wall thickness. When the first valve port (1021) is in an open state, the second connecting hole (1022) is connected to the first valve port (1021); when the second valve port (131) is in an open state, the first connecting hole (1011) is connected to the second connecting hole (1022) through the second valve port (131).

8. The electric valve according to claim 6, characterized in that: The inner end walls at both ends of the sliding groove (311) are defined as groove end walls. When the first valve port (1021) or the second valve port (131) is in a closed state, a gap (3115) is left between the sliding member (21) and the corresponding groove end wall.

9. The electric valve according to claim 6, characterized in that: The movable structure (3) further comprises a valve sleeve (34) sleeved on the periphery of the movable sleeve, the connecting rod (33) is fixedly connected to the valve sleeve (34), a limiting cavity (35) is formed in the valve sleeve (34), and one end of the movable sleeve close to the second valve port (131) is constrained in the limiting cavity (35).

10. The electric valve according to claim 9, characterized in that: A flange (313) is convexly provided on the outer peripheral wall of the movable sleeve, a first spring (36) and a second spring (37) are provided in the limiting cavity (35), and the flange (313) is located between the first spring (36) and the second spring (37).

11. The electric valve according to any one of claims 2 to 10, characterized in that: It also includes an accommodating chamber (121), wherein the accommodating chamber (121) is at least partially located in the valve chamber (10), and the movable member (31) and the moving member (2) are both located in the accommodating chamber (121).

12. The electric valve according to claim 11, characterized in that: A sleeve (4) sleeved on the outer periphery of the movable sleeve is provided in the accommodating cavity (121), and a limiting structure (5) for limiting the circumferential rotation of the movable sleeve is provided between the sleeve (4) and the movable sleeve.

13. The electric valve according to claim 12, characterized in that: The inner peripheral wall of the sleeve (4) includes a first plane (41) extending along the movement direction of the movable sleeve, the outer peripheral wall of the movable sleeve has a second plane (312) parallel to the first plane (41) at a position corresponding to the first plane (41), and the limiting structure (5) includes the first plane (41) and the second plane (312).

14. The electric valve according to claim 13, characterized in that: There are two first planes (41), which are arranged at intervals along the circumference of the sleeve (4), and each first plane (41) corresponds to one second plane (312).

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