Electric valve

Abstract

The utility model belongs to the technical field of valves, and discloses an electric valve. The electric valve comprises an actuator and a valve body, a valve rod protrudes out of the valve body, the actuator comprises a base, a first boss is formed outside the base in a protruding mode, the valve rod penetrates through the first boss to be connected with a rotating shaft of the actuator, the electric valve further comprises a connecting structure, the connecting structure comprises a pressing sleeve, the first boss is sleeved with the pressing sleeve, and the pressing sleeve is matched with the valve body in a clamped mode. The pressing sleeve arranged outside the first boss in a sleeving mode is matched with the valve body in a clamping mode, so that connection between the actuator and the valve body is achieved, the clamping connection mode is simple, operation is convenient, and disassembly and assembly between the actuator and the valve body are convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to an electric valve. Background Art

[0002] In some hydraulic systems, an electric valve is an essential valve fitting, mainly playing a role in controlling the on-off of fluid. The electric valve includes an actuator and a valve body. A valve stem and a valve core are arranged in the valve body. The actuator drives the valve stem to rotate, driving the valve core to rotate, so as to realize the on-off control of the fluid. In the prior art, the connection mode between the actuator and the valve body is usually a threaded connection. When connecting, the nut on the actuator is rotated to be connected with the thread on the valve body. However, the position is relatively narrow when the nut rotates, and the rotation is difficult, resulting in inconvenient disassembly and assembly.

[0003] Therefore, there is an urgent need to provide an electric valve to solve the above problems. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an electric valve, in which the connection mode between the actuator and the valve body is simple and convenient for disassembly and assembly.

[0005] To achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An electric valve, including an actuator and a valve body. A valve stem protrudes from the valve body. The actuator includes a base. A first boss protrudes from the outside of the base. The valve stem passes through the first boss and is connected to the rotating shaft of the actuator. The electric valve further includes a connection structure. The connection structure includes a bushing. The bushing is sleeved outside the first boss, and the bushing is in clamping fit with the valve body.

[0007] As an optional solution, the connection structure further includes an elastic member. The elastic member is accommodated between the bushing and the first boss. The bushing can slide relative to the first boss and compress the elastic member.

[0008] As an optional solution, the bushing includes a cylinder body and a convex edge. The convex edge is vertically connected to one end of the cylinder body far from the valve body and extends towards the inside of the cylinder body. An annular groove for accommodating the elastic member is formed between the cylinder body and the first boss. One end of the elastic member abuts against the convex edge.

[0009] As an optional solution, the connection structure further includes a pressing plate. The pressing plate is detachably arranged at one end of the first boss close to the valve body and is located inside the circumference of the bushing. One end of the elastic member abuts against the bushing, and the other end abuts against the pressing plate.

[0010] As an alternative solution, the valve body includes a valve body main body and a connection disk detachably connected to the valve body main body. The valve stem protrudes outside the valve body main body. The connection disk is disposed around the valve stem, and the pressing sleeve is in snap-fit connection with the connection disk.

[0011] As an alternative solution, a plurality of hooks are provided on one side of the pressing sleeve close to the connection disk, and a plurality of slots are formed on one side of the connection disk close to the pressing sleeve. Each hook is in snap-fit connection with a corresponding slot.

[0012] As an alternative solution, the hook includes a connecting portion and a snap-fitting portion. One end of the connecting portion is connected to the pressing sleeve, and the other end is connected to the snap-fitting portion at an angle. The slot includes a communicating channel section and a snap-fitting section. Along the circumferential direction of the connection disk, the snap-fitting section is located on one side of the channel section, and the snap-fitting portion can slide into the snap-fitting section from the channel section and engage with the snap-fitting section.

[0013] As an alternative solution, a positioning post is provided on one of the side of the pressing plate facing the connection disk and the side of the connection disk facing the pressing plate, and a positioning hole is provided on the other of them. The positioning post is in plug-in connection with the positioning hole.

[0014] As an alternative solution, a plurality of buckles are provided on one of the side of the pressing plate facing the first boss and the side of the first boss facing the pressing plate, and a plurality of card holes are provided on the other of them. The buckle can be snapped into the corresponding card hole.

[0015] As an alternative solution, an anti-fooling post is provided on one of the side of the pressing plate facing the first boss and the side of the first boss facing the pressing plate, and an anti-fooling hole is provided on the other of them. The anti-fooling post is in plug-in connection with the anti-fooling hole.

[0016] As an alternative solution, a second boss for the valve stem to pass through is externally protruded on the valve body. The outer diameter of the second boss is smaller than the inner diameter of the first boss, and the second boss is in plug-in connection with the first boss.

[0017] Advantages of the present utility model:

[0018] The present utility model provides an electric valve, which includes an actuator and a valve body. A valve stem protrudes on the valve body. The actuator includes a base, and a first boss is externally protruded on the base. After the valve stem passes through the first boss and is connected to the rotating shaft of the actuator, a pressing sleeve sleeved outside the first boss is in snap-fit connection with the valve body, thereby realizing the connection between the actuator and the valve body. The snap-fit connection method is simple and convenient to operate, thus facilitating the disassembly and assembly between the actuator and the valve body. Description of the Drawings

[0019] Figure 1 is a schematic structural diagram of an electric valve provided by the present utility model;

[0020] Figure 2 is a cross-sectional view of an electric valve provided by the present utility model;

[0021] Figure 3 is a cross-sectional view of an exploded view of an electric valve provided by the present utility model;

[0022] Figure 4 is a schematic structural diagram of a bush provided by the present utility model;

[0023] Figure 5 is a partial sectional view of a connection plate provided by the present utility model;

[0024] Figure 6 is a schematic structural diagram of a pressing plate provided by the present utility model.

[0025] In the figure:

[0026] 10, actuator; 11, base; 12, first boss; 121, clamping hole; 13, rotating shaft;

[0027] 20, valve body; 21, valve body main body; 211, second boss; 22, connection plate; 221, clamping groove; 2211, channel section; 2212, clamping section; 222, positioning hole; 23, connecting piece; 24, liquid flow channel;

[0028] 30, connection structure; 31, bush; 311, clamping hook; 3111, connecting part; 3112, clamping part; 312, cylinder body; 313, flange; 32, pressing plate; 321, positioning column; 322, buckle; 323, anti-fooling column; 33, elastic part; 34, annular groove;

[0029] 40, valve stem; 50, valve core. Specific embodiments

[0030] The present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present utility model, rather than limiting the present utility model. In addition, it should be noted that for the convenience of description, only parts related to the present utility model rather than all structures are shown in the drawings.

[0031] In the description of the present utility model, unless otherwise clearly specified and defined, the terms "connected", "connected to", and "fixed" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0032] In the present utility model, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "over", and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "beneath", and "under" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is less than that of the second feature.

[0033] In the description of this embodiment, the orientation or positional relationships such as "above", "below", "right", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meanings.

[0034] As Figure 1 and Figure 2 shown, this embodiment provides an electric valve, which includes an actuator 10, a valve body 20, a valve stem 40, and a valve core 50. The actuator 10 includes a base 11, and a first boss 12 protrudes outward from the bottom of the base 11. A valve cavity and a liquid flow channel 24 communicating with the valve cavity are provided inside the valve body 20. The valve core 50 is hermetically installed in the valve cavity. One end of the valve stem 40 is fixedly connected to the valve core 50, and the other end protrudes out of the valve body 20 and passes through the first boss 12 to be connected to the rotating shaft 13 of the actuator 10. The rotating shaft 13 is driven to rotate by a motor inside the actuator 10. The rotating shaft 13 drives the valve stem 40 to rotate, and synchronously drives the valve core 50 inside the valve body 20 to rotate, thereby realizing the opening or closing of the liquid flow channel 24. In an optional embodiment, the electric valve is an electric ball valve, and the valve core 50 is a valve ball; in other embodiments, the electric valve can also be other valves, which are not specifically limited herein. Among them, the specific structure of the actuator 10 is the prior art and will not be elaborated herein too much.

[0035] In the prior art, the connection between the actuator 10 and the valve body 20 is usually a threaded connection. When connecting, the nut on the actuator 10 is rotated to connect with the thread on the valve body 20. However, the position is relatively narrow when the nut rotates, and the rotation is difficult, resulting in inconvenient disassembly and assembly.

[0036] To solve the above problems, as Figure 1 and Figure 2 shown, in this embodiment, the electric valve further includes a connection structure 30. The connection structure 30 includes a bushing 31. The bushing 31 is sleeved outside the first boss 12, and the bushing 31 is in snap-fit with the valve body 20. When the valve stem 40 passes through the first boss 12 and is connected to the rotating shaft 13 of the actuator 10, the bushing 31 sleeved outside the first boss 12 is in snap-fit with the valve body 20, thereby realizing the connection between the actuator 10 and the valve body 20. The snap-fit connection method is simple and reliable, and the operation is convenient, thus facilitating the disassembly and assembly between the actuator 10 and the valve body 20.

[0037] In an alternative embodiment, as Figure 2 shown, the connection structure 30 further includes an elastic member 33. The elastic member 33 is accommodated between the bushing 31 and the first boss 12, and the bushing 31 can slide relative to the first boss 12 and compress the elastic member 33. Among them, the elastic member 33 can be selected as a spring. When connecting the bushing 31 and the valve body 20, press down the bushing 31 to compress the elastic member 33, and snap the bushing 31 onto the valve body 20; when disassembling the actuator 10 and the valve body 20, just release the snap-fit of the bushing 31 from the valve body 20. Under the elastic force of the elastic member 33, the bushing 31 will automatically bounce back to its original position. At this time, just take away the actuator 10. By providing the elastic member 33, it is possible to prevent the actuator 10 from shaking after snap-fitting.

[0038] In an alternative embodiment, as Figure 2 shown, the connection structure 30 further includes a pressing plate 32. The pressing plate 32 is detachably arranged at one end of the first boss 12 close to the valve body 20 and is located inside the circumference of the bushing 31. One end of the elastic member 33 abuts against the bushing 31, and the other end abuts against the pressing plate 32. During assembly, first sleeve the bushing 31 on the first boss 12, then place the elastic member 33 between the bushing 31 and the first boss 12, and finally compress the elastic member 33 and connect the pressing plate 32 to one end of the first boss 12 close to the valve body 20. One end of the elastic member 33 abuts against the bushing 31, and the other end abuts against the pressing plate 32. Under the pressing action of the elastic member 33, the bushing 31 can be fixed on the first boss 12, and under the supporting action of the pressing plate 32, it is possible to prevent the elastic member 33 from coming out, so that the actuator 10 and the connection structure 30 form an integral structure, and the integral structure can be sold separately.

[0039] Specifically, as Figure 2 and Figure 4As shown in the figure, the compression sleeve 31 includes a cylinder body 312 and a flange 313. The flange 313 is vertically connected to one end of the cylinder body 312 away from the valve body 20 and extends toward the inside of the cylinder body 312. An annular groove 34 for accommodating the elastic member 33 is formed between the cylinder body 312 and the first boss 12. One end of the elastic member 33 abuts against the flange 313, and the other end abuts against the pressure plate 32. When the compression sleeve 31 moves downward, the flange 313 abuts against the elastic member 33 and compresses the elastic member 33. The end of the cylinder body 312 away from the flange 313 can be snap-connected to the valve body 20. The structure of the compression sleeve 31 is simple, which is convenient for processing and assembly. By arranging the elastic member 33 in the annular groove 34, the situation that the compression sleeve 31 shakes can also be prevented, ensuring the stability and firmness of the snap connection.

[0040] Specifically, in combination with Figure 1 and Figure 2 , the valve body 20 includes a valve body main body 21 and a connection disk 22 detachably connected to the valve body main body 21. The valve stem 40 protrudes outside the valve body main body 21, and the connection disk 22 is disposed around the valve stem 40. The compression sleeve 31 is snap-connected to the connection disk 22. The valve body main body 21 and the connection disk 22 are separately manufactured, which is convenient for processing, and are detachably connected through a connecting member 23. Among them, the connecting member 23 can be selected as a pin, a screw or a rivet.

[0041] As Figure 2 shown, a second boss 211 for the valve stem 40 to pass through is protrudingly provided outside the valve body main body 21 of the valve body 20. The second boss 211 is configured as a stepped structure. The connection disk 22 is disposed around the outer circumference of the second boss 211 and abuts against the stepped surface of the second boss 211. The outer diameter of the second boss 211 is smaller than the inner diameter of the first boss 12, and the second boss 211 is inserted and matched with the first boss 12. Through the insertion and matching of the second boss 211 and the first boss 12, the tight fit between the actuator 10 and the valve body 20 can be ensured, and the connection is more stable and reliable.

[0042] As Figures 2 to 5 shown, a plurality of hooks 311 are provided on one side of the compression sleeve 31 close to the connection disk 22, and a plurality of slots 221 for the hooks 311 to slide into are formed on one side of the connection disk 22 close to the compression sleeve 31. Each hook 311 is snap-connected to the corresponding slot 221. By rotating the compression sleeve 31, the hook 311 can be locked in the slot 221 or disengaged from the slot 221. Through the above method, the disassembly and assembly of the compression sleeve 31 and the connection disk 22 are more convenient and fast, improving the disassembly and assembly efficiency.

[0043] Specifically, as Figure 4 shown, the hook 311 includes a connecting portion 3111 and a snap-connecting portion 3112. One end of the connecting portion 3111 is connected to the compression sleeve 31, and the other end is vertically connected to the snap-connecting portion 3112. As Figure 5As shown, the card slot 221 includes a connected channel section 2211 and a clamping section 2212. Along the circumference of the connecting disk 22, the clamping section 2212 is located on one side of the channel section 2211. The clamping portion 3112 can slide from the channel section 2211 into the clamping section 2212 and engage with the clamping section 2212. When connecting, press down the pressure sleeve 31, the connecting portion 3111 and the clamping portion 3112 are simultaneously placed into the channel section 2211, and then rotate the pressure sleeve 31 clockwise to make the clamping portion 3112 slide from the channel section 2211 into the clamping section 2212. Thus, the card hook 311 is clamped in the card slot 221. If you want to disassemble the pressure sleeve 31, you can rotate the pressure sleeve 31 counterclockwise to make the clamping portion 3112 retreat from the clamping section 2212 to the channel section 2211. Subsequently, under the elastic force of the elastic member 33, the pressure sleeve 31 will automatically bounce back to its original position, and the pressure sleeve 31 and the valve body 20 are separated. Through the above method, the disassembly and assembly of the pressure sleeve 31 are convenient and fast, the connection is firm and stable and reliable.

[0044] In an alternative embodiment, as Figure 4 and Figure 5 shown, the number of card hooks 311 and card slots 221 are both set to four. The four card hooks 311 are evenly distributed at intervals along the circumference of the pressure sleeve 31, and the four card slots 221 are evenly distributed at intervals along the circumference of the connecting disk 22. Each card hook 311 can cooperate with the corresponding card slot 221, which can increase the connection stability between the pressure sleeve 31 and the connecting disk 22. Of course, in other embodiments, the number of card hooks 311 and card slots 221 can also be set to two, three, four or more. Those skilled in the art can adaptively select the number of card hooks 311 and card slots 221, and no specific limitation is made here.

[0045] In an alternative embodiment, as Figure 6 shown, two symmetrically arranged positioning posts 321 are provided on the side of the pressure plate 32 facing the connecting disk 22. As Figure 5 shown, two symmetric positioning holes 222 are provided on the side of the connecting disk 22 facing the pressure plate 32. Combining Figure 2 and Figure 3 , each positioning post 321 is inserted and matched with the corresponding positioning hole 222. When installing the actuator 10, first insert the positioning post 321 into the corresponding positioning hole 222 for pre-positioning to ensure the accurate positions of the valve stem 40 and the rotating shaft 13. Then gently rotate the actuator 10, and the rotating shaft 13 and the valve stem 40 can form a rotational limit connection to transmit torque. In addition, after pre-positioning, it can also ensure that the positions of the card hooks 311 and the card slots 221 are aligned, which is convenient for subsequent clamping cooperation. In another alternative embodiment, the positioning posts 321 are provided on the connecting disk 22, and the positioning holes 222 are provided on the pressure plate 32, which can also achieve the above effects.

[0046] In an alternative embodiment, as Figure 3 andFigure 6 As shown, on the side of the pressing plate 32 facing the first boss 12, there are a plurality of buckles 322, and on the side of the first boss 12 facing the pressing plate 32, there are a plurality of card holes 121. Each buckle 322 can be snapped into the corresponding card hole 121. Specifically, the notch on the side wall of the buckle 322 cooperates with the protrusion on the side wall of the card hole 121 to achieve the snap connection effect. Through the above method, the disassembly and assembly of the pressing plate 32 and the first boss 12 are more convenient and fast, and the connection is firm, stable and reliable. In another alternative embodiment, the buckle 322 is arranged on the first boss 12, and the card hole 121 is arranged on the pressing plate 32, and the above effect can also be achieved.

[0047] In an alternative embodiment, as Figure 6 shown, the number of both the buckles 322 and the card holes 121 is set to three. The three buckles 322 are evenly distributed at intervals along the circumferential direction of the pressing plate 32, and the three card holes 121 are evenly distributed at intervals along the circumferential direction of the first boss 12. Each buckle 322 can cooperate with the corresponding card hole 121, which can ensure the connection stability between the pressing plate 32 and the first boss 12. Of course, in other embodiments, the number of the buckles 322 and the card holes 121 can also be set to two, four or more. Those skilled in the art can adaptively select the number of the buckles 322 and the card holes 121, and no specific limitation is made here.

[0048] In an alternative embodiment, as Figure 6 shown, on the side of the pressing plate 32 facing the first boss 12, there is an anti-fooling post 323, and on the side of the first boss 12 facing the pressing plate 32, there is an anti-fooling hole (not shown). The anti-fooling post 323 is inserted and matched with the anti-fooling hole. When the number of the buckles 322 is three, the anti-fooling post 323 is located between any two buckles 322. When installing the pressing plate 32, first ensure that the anti-fooling post 323 is aligned with the anti-fooling hole, and then insert the anti-fooling post 323 into the anti-fooling hole. In this way, it can be ensured that each buckle 322 can cooperate with the only corresponding card hole 121, and further, the accurate cooperation between the subsequent positioning post 321 and the positioning hole 222 can be ensured, preventing the pressing plate 32 from being installed at the wrong angle, resulting in the subsequent misalignment of the positioning post 321 and the positioning hole 222 and inability to cooperate. In another alternative embodiment, the anti-fooling post 323 is arranged on the first boss 12, and the anti-fooling hole is arranged on the pressing plate 32, and the above effect can also be achieved.

[0049] Next, in combination with Figure 2 and Figure 3 , the disassembly and assembly process between the actuator 10 and the valve body 20 will be described in detail:

[0050] 1) First, insert the positioning post 321 on the lower side of the pressing plate 32 into the positioning hole 222 on the connection disk 22 for pre-positioning, and then gently rotate the actuator 10 to form a rotational restraint connection between the rotating shaft 13 and the valve stem 40;

[0051] 2) Press down the pressing sleeve 31 and compress the elastic member 33, so that the hook 311 below the pressing sleeve 31 extends into the slot 221 on the connecting plate 22. At the same time, press down the pressing plate 32 to make it in close contact with the connecting plate 22. Then rotate the pressing sleeve 31 clockwise so that the hook 311 is locked in the slot 221 and cannot rotate. After that, release the pressing sleeve 31. Under the action of the elastic member 33, the hook 311 is tightly stuck in the slot 221. Then rotate the pressing sleeve 31 left and right. If it cannot rotate, it means the connection is completed.

[0052] 3) When disassembling the actuator 10 and the valve body 20, first gently press down the pressing sleeve 31, and then rotate the pressing sleeve 31 counterclockwise. Under the elastic force of the elastic member 33, the pressing sleeve 31 will automatically bounce back to its original position. At this time, just remove the actuator 10.

[0053] Obviously, the above embodiments of the present invention are merely examples for clearly explaining the present invention, rather than limitations on the implementation manners of the present invention. For those of ordinary skill in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. An electric valve, comprising an actuator (10) and a valve body (20), wherein a valve stem (40) protrudes from the valve body (20), the actuator (10) comprises a base (11), the base (11) protrudes outward to form a first boss (12), the valve stem (40) passes through the first boss (12) and is connected to a rotating shaft (13) of the actuator (10), characterized in that: The electric valve further comprises a connection structure (30), wherein the connection structure (30) comprises a pressing sleeve (31), wherein the pressing sleeve (31) is sleeved outside the first boss (12), and the pressing sleeve (31) is snap-fitted with the valve body (20).

2. The electric valve according to claim 1, characterized in that: The connection structure (30) further comprises an elastic member (33), wherein the elastic member (33) is accommodated between the pressing sleeve (31) and the first boss (12), and the pressing sleeve (31) can slide relative to the first boss (12) and compress the elastic member (33).

3. The electric valve according to claim 2, characterized in that: The compression sleeve (31) comprises a cylinder (312) and a convex edge (313), wherein the convex edge (313) is vertically connected to one end of the cylinder (312) away from the valve body (20) and extends toward the inner side of the cylinder (312), and an annular groove (34) for accommodating the elastic member (33) is formed between the cylinder (312) and the first boss (12), and one end of the elastic member (33) abuts against the convex edge (313).

4. The electric valve according to claim 2, characterized in that: The connection structure (30) also includes a pressure plate (32), which is detachably arranged at one end of the first boss (12) close to the valve body (20) and is located on the inner side of the circumference of the pressing sleeve (31), and one end of the elastic member (33) abuts against the pressing sleeve (31), and the other end abuts against the pressure plate (32).

5. The electric valve according to claim 4, characterized in that: The valve body (20) comprises a valve body (21) and a connecting plate (22) detachably connected to the valve body (21); the valve stem (40) protrudes out of the valve body (21); the connecting plate (22) is arranged around the outside of the valve stem (40); and the pressing sleeve (31) is snap-fitted with the connecting plate (22).

6. The electric valve according to claim 5, characterized in that: A plurality of hooks (311) are provided on one side of the pressing sleeve (31) close to the connecting disk (22), and a plurality of slots (221) are provided on one side of the connecting disk (22) close to the pressing sleeve (31), and each of the hooks (311) is engaged with a corresponding slot (221).

7. The electric valve according to claim 6, characterized in that: The hook (311) comprises a connecting portion (3111) and a clamping portion (3112); one end of the connecting portion (3111) is connected to the pressing sleeve (31), and the other end is connected to the clamping portion (3112) at an angle; the clamping slot (221) comprises a communicating channel section (2211) and a clamping section (2212); along the circumference of the connecting disk (22), the clamping section (2212) is located on one side of the channel section (2211); the clamping portion (3112) can slide from the channel section (2211) into the clamping section (2212) and be clamped with the clamping section (2212).

8. The electric valve according to claim 5, characterized in that: One of the sides of the pressing plate (32) facing the connecting disk (22) and the side of the connecting disk (22) facing the pressing plate (32) is provided with a positioning column (321), and the other of the two is provided with a positioning hole (222), and the positioning column (321) is plugged into and matched with the positioning hole (222).

9. The electric valve according to any one of claims 4 to 8, characterized in that: One of the two sides of the pressure plate (32) facing the first boss (12) and the first boss (12) facing the pressure plate (32) is provided with a plurality of buckles (322), and the other of the two sides is provided with a plurality of clamping holes (121), and the buckles (322) can be clamped in the corresponding clamping holes (121).

10. The electric valve according to any one of claims 4 to 8, characterized in that: One of the sides of the pressure plate (32) facing the first boss (12) and the side of the first boss (12) facing the pressure plate (32) is provided with an anti-foolproof column (323), and the other of the two is provided with an anti-foolproof hole, and the anti-foolproof column (323) is plugged into and matched with the anti-foolproof hole.

11. The electric valve according to any one of claims 1 to 8, characterized in that: The valve body (20) is provided with a second boss (211) protruding outwardly for the valve stem (40) to pass through, the outer diameter of the second boss (211) is smaller than the inner diameter of the first boss (12), and the second boss (211) is plug-fitted with the first boss (12).

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