Electric valve

Abstract

The invention provides an electric valve which comprises a valve body provided with a valve cavity, a first communicating hole and a second communicating hole, and the first communicating hole and the second communicating hole communicate with the valve cavity; the valve element assembly comprises a connecting rod component and a valve element component, and the connecting rod component is movably arranged in the valve cavity; the valve element component is installed on the connecting rod component and moves in the valve cavity along with the connecting rod component so that the first communicating hole and the second communicating hole can be communicated or separated. The rotor part is located at the end, away from the valve element part, of the connecting rod part, and the rotor part is rotationally arranged in the valve cavity; one end of the connecting piece is fixedly arranged on the rotor component, the other end of the connecting piece is in threaded fit with the connecting rod component so as to drive the connecting rod component to move in the valve cavity, and the connecting piece is limited in the axis direction of the valve cavity relative to the valve body. By means of the scheme, the problems that in the prior art, when the valve element assembly is driven through a piston component, the structure of the piston component is complex, and operation convenience is poor can be solved.

Description

Technical Field

[0001] The present invention relates to the technical field of electric valves, and more particularly, to an electric valve. Background Art

[0002] An electric valve generally includes a valve body, a piston component and a valve core assembly. The valve body is provided with a valve cavity, a first communication hole and a second communication hole. The first communication hole and the second communication hole are respectively communicated with the valve cavity. The valve core assembly is movably arranged in the valve cavity to communicate or cut off the first communication hole and the second communication hole. The piston component is arranged in the valve cavity, and the piston component is in driving cooperation with the valve core component to drive the valve core assembly to move.

[0003] To drive the valve core assembly to move through the piston component, it is necessary to introduce a high-pressure medium to one side of the piston component and form a pressure difference on both sides of the piston component to drive the valve core assembly to move. However, the structural design of the piston component is relatively cumbersome, and the driving method of driving the valve core assembly to move by forming a pressure difference has poor convenience. Summary of the Invention

[0004] The present invention provides an electric valve to solve the problem of poor convenience of the driving method of the valve core assembly in the prior art.

[0005] The present invention provides an electric valve, which includes: a valve body provided with a valve cavity, a first communication hole and a second communication hole, and the first communication hole and the second communication hole are respectively communicated with the valve cavity; a valve core assembly including a connecting rod component and a valve core component, the connecting rod component is movably arranged in the valve cavity; the valve core component is installed on a guide frame, and the valve core component moves in the valve cavity along with the connecting rod component to communicate or cut off the first communication hole and the second communication hole; a rotor component located at one end of the connecting rod component away from the valve core component, the rotor component is rotatably arranged in the valve cavity; a connecting piece, one end of the connecting piece is fixedly arranged on the rotor component, and the other end of the connecting piece is in threaded cooperation with the connecting rod component to drive the connecting rod component to move in the valve cavity, and the connecting piece is limited in the axial direction of the valve cavity relative to the valve body.

[0006] Further, the connecting rod component includes a connecting rod and a guide frame sequentially arranged in the direction from the rotor component to the valve core component. The connecting rod and the guide frame are fixedly connected. The connecting rod is in threaded cooperation with the connecting piece, and the valve core component is installed on the guide frame.

[0007] Further, the electric valve further includes: a valve cover arranged in the valve cavity, and the connecting rod is in guiding cooperation with the valve cover.

[0008] Further, the valve cover is provided with a through hole, the through hole penetrates the valve cover along the axial direction of the valve cavity, and the connecting rod is movably arranged in the through hole, and the connecting rod is in guiding cooperation with the through hole.

[0009] Further, a first anti-rotation structure is provided on the side wall of the through hole, and a second anti-rotation structure is provided on the side wall of the connecting rod. The first anti-rotation structure and the second anti-rotation structure are in anti-rotation cooperation.

[0010] Further, the valve cover divides the valve cavity into a first chamber and a second chamber distributed along the axial direction. The rotor component is located in the first chamber, and the valve core component is located in the second chamber.

[0011] Further, a first balance passage is formed between the connecting rod and the through hole. Both ends of the first balance passage are communicated with the first chamber and the second chamber respectively.

[0012] Further, a second balance passage is provided on the valve cover. The second balance passage is eccentrically arranged with respect to the through hole. Both ends of the second balance passage are communicated with the first chamber and the second chamber respectively.

[0013] Further, the through hole includes a guiding hole and an avoidance hole that are sequentially communicated in the direction from the connecting rod to the connecting member. The aperture size of the guiding hole is smaller than that of the avoidance hole. The guiding hole is in guiding cooperation with the connecting rod. One end of the connecting member away from the rotor component passes through the avoidance hole into the guiding hole and is in threaded cooperation with the connecting rod.

[0014] Further, the electric valve further includes a bearing disposed in the avoidance hole. The connecting member is rotatably disposed in the bearing, and the outer peripheral surface of the connecting member is connected to the inner ring of the bearing.

[0015] Further, a limiting portion is provided on the connecting member. The electric valve further includes: an elastic member disposed on the connecting member. The bearing is located between the elastic member and the limiting portion. The elastic member and the limiting portion respectively abut against the bearing. The elastic member is used to apply an elastic force to the connecting member so that the limiting portion on the connecting member contacts the bearing.

[0016] Further, the electric valve further includes: a valve seat disposed in the valve cavity. The valve seat is in guiding cooperation with the valve core component.

[0017] Further, an installation opening is provided on the guiding frame. The valve core component includes a first valve core and a second valve core that are independent of each other. The first valve core and the second valve core are respectively installed in the installation opening. The first valve core and the second valve core abut against each other. The first valve core is correspondingly arranged with the first communication hole, and the second valve core is correspondingly arranged with the second communication hole.

[0018] Further, the connecting rod component is in limiting cooperation with the valve cover to limit the displacement stroke of the connecting rod component in the axial direction of the valve cavity.

[0019] Further, a stepped surface is provided on the side wall of the connecting rod component. The stepped surface is used for limiting cooperation with the valve cover.

[0020] Further, the first communication hole and the second communication hole are respectively communicated with the side part of the valve cavity. Along the axial direction of the valve cavity, the end of the guide frame far from the connecting rod protrudes from the valve core component, and the end of the guide frame far from the connecting rod is used for limiting cooperation with the end of the valve cavity far from the rotor component.

[0021] Applying the technical solution of the present invention, the connecting piece is limited in the axial direction of the valve cavity relative to the valve body. The rotation of the rotor component drives the connecting piece to rotate, that is, the connecting piece does not move in the axial direction of the valve cavity relative to the valve body. The connecting piece drives the connecting rod component to move in the axial direction of the valve cavity while rotating. During the movement of the connecting rod component, the valve core component is driven to move in the axial direction of the valve cavity so that the valve core component connects or disconnects the first communication hole and the second communication hole. In the traditional technical solution, it is necessary to introduce a high-pressure medium to one side of the piston component and form a pressure difference on both sides of the piston component to drive the valve core assembly to move. However, the structural design of the piston component is relatively cumbersome, and the driving method of driving the valve core assembly to move by forming a pressure difference has poor convenience. Compared with the traditional technical solution, the setting of this solution drives the valve core component to move in the axial direction of the valve cavity through the rotor component and the connecting piece, realizes the connection or disconnection of the first communication hole and the second communication hole, can realize a zero-pressure-difference switching valve, and has a relatively simple structure and strong operation convenience. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The specification drawings forming a part of this application are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0023] Figure 1 The structural schematic diagram when the first communication hole and the second communication hole of the electric valve provided by the embodiment of the present invention are connected is shown;

[0024] Figure 2 The structural schematic diagram when the first communication hole and the second communication hole of the electric valve provided by the embodiment of the present invention are disconnected is shown;

[0025] Figure 3 The structural schematic diagram of the connecting rod component provided by the embodiment of the present invention is shown;

[0026] Figure 4 The sectional view of the connecting rod component provided by the embodiment of the present invention is shown;

[0027] Figure 5 The side view of the connecting rod component provided by the embodiment of the present invention is shown;

[0028] Figure 6 The top view of the connecting rod component provided by the embodiment of the present invention is shown;

[0029] Figure 7Shows a schematic structural diagram of a guide frame provided by an embodiment of the present invention;

[0030] Figure 8 Shows a front view of the guide frame provided by an embodiment of the present invention;

[0031] Figure 9 Shows a cross-sectional view of one of the valve covers provided by an embodiment of the present invention;

[0032] Figure 10 Shows Figure 9 the top view of the valve cover in

[0033] Figure 11 Shows a cross-sectional view of another valve cover provided by an embodiment of the present invention;

[0034] Figure 12 Shows Figure 11 the top view of the valve cover in

[0035] Among them, the above-mentioned drawings include the following reference numerals:

[0036] 01, valve body;

[0037] 0111, first chamber; 0112, second chamber;

[0038] 012, first communication hole; 013, second communication hole;

[0039] 014, first sleeve; 015, second sleeve;

[0040] 10, connecting rod; 1001, second anti-rotation surface;

[0041] 101, mounting groove; 102, clamping portion; 103, first limiting structure;

[0042] 11, connecting rod;

[0043] 12, connecting block;

[0044] 20, guide frame; 201, mounting port; 202, clamping hole; 203, second limiting structure;

[0045] 21, first plate body; 22, second plate body;

[0046] 30, valve core component;

[0047] 31, first valve core; 32, second valve core; 33, elastic portion;

[0048] 40, rotor component;

[0049] 50, connecting member; 501, limiting portion;

[0050] 60, valve cover;

[0051] 601, through hole; 6010, first anti-rotation surface; 6011, guiding hole; 6012, avoidance hole; 6013, groove structure;

[0052] 602, second balance channel;

[0053] 70, bearing;

[0054] 80, elastic component;

[0055] 90, valve seat. Specific embodiments

[0056] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually illustrative only and in no way constitutes a limitation on the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present invention.

[0057] As Figures 1 to 3 shown, the embodiment of the present invention provides an electric valve, which includes a valve body 01, a valve core assembly, a rotor component 40, and a connecting member 50. The valve body 01 is provided with a valve cavity, a first communication hole 012, and a second communication hole 013. The first communication hole 012 and the second communication hole 013 are respectively communicated with the valve cavity. The valve core assembly includes a connecting rod component and a valve core component 30. The connecting rod component is movably arranged in the valve cavity. The valve core component 30 is installed on the connecting rod component. The valve core component 30 moves in the valve cavity along with the connecting rod component to connect or disconnect the first communication hole 012 and the second communication hole 013. The rotor component 40 is located at one end of the connecting rod component away from the valve core component 30. The rotor component 40 is rotatably arranged in the valve cavity. One end of the connecting member 50 is fixedly arranged on the rotor component 40. The other end of the connecting member 50 is in threaded cooperation with the connecting rod component to drive the connecting rod component to move in the valve cavity. The connecting member 50 does not move relative to the valve body 01 in the axial direction of the valve cavity.

[0058] Applying the technical solution of the present invention, the connecting member 50 is limited in the axial direction of the valve cavity relative to the valve body 01, that is, the connecting member 50 does not move in the axial direction of the valve cavity relative to the valve body 01. The rotation of the rotor member 40 drives the connecting member 50 to rotate. While the connecting member 50 rotates, it drives the connecting rod member to move in the axial direction of the valve cavity. During the movement of the connecting rod member, it drives the valve core member 30 to move in the axial direction of the valve cavity, so that the valve core member 30 connects or disconnects the first communication hole 012 and the second communication hole 013. In the traditional technical solution, it is necessary to introduce a high-pressure medium to one side of the piston member and form a pressure difference on both sides of the piston member to drive the movement of the valve core assembly. However, the structural design of the piston member is relatively cumbersome, and the driving method of driving the valve core assembly to move by forming a pressure difference has poor convenience. Compared with the traditional technical solution, in this solution, the rotation of the rotor member 40 and the connecting member 50 drives the connecting rod member to drive the valve core member 30 to move in the axial direction of the valve cavity, realizing the connection or disconnection of the first communication hole 012 and the second communication hole 013. Its structure is relatively simple and the operation is more convenient.

[0059] Further, the connecting rod member includes a connecting rod 10 and a guide frame 20 arranged in sequence from the rotor member 40 to the valve core member 30, and the connecting rod 10 and the guide frame 20 are fixedly connected. The connecting rod 10 is in threaded cooperation with the connecting member 50, and the valve core member 30 is installed on the guide frame 20. The specific connection method of the connecting rod 10 and the guide frame 20 in this solution is not limited, and the fixed connection can be realized by fasteners, clamping, welding and other methods. In the connecting rod member of this embodiment, one end of the connecting rod 10 is injection-molded on the guide frame 20. In this way, the possibility of loosening of the connection between the connecting rod 10 and the guide frame 20 can be reduced, the stability of the connection between the connecting rod 10 and the guide frame 20 can be improved, and the stability of the valve core member 30 during movement can be improved. In the traditional technical solution, the connecting rod is connected to the guide frame by fasteners. After long-term use, the fasteners are likely to loosen, affecting the stability of the connection between the connecting rod and the guide frame. Compared with the traditional technical solution, in this solution, the stability of the connection between the connecting rod 10 and the guide frame 20 can be improved, and the connecting rod 10 is injection-molded on the guide frame 20, making its assembly more convenient.

[0060] As Figure 3 and Figure 4 shown, specifically, the guide frame 20 is a plate-like structure. The length direction of the guide frame 20 is the same as the length direction of the connecting rod 10, and the width direction of the guide frame 20 is perpendicular to the length direction of the connecting rod 10. Figure 3 In, the Z direction is the length direction of the connecting rod 10 and the guide frame 20, the X direction is the width direction of the connecting rod 10 and the guide frame 20, and the Y direction is the thickness direction of the connecting rod 10 and the guide frame 20.

[0061] As Figures 3 to 5As shown, in this embodiment, an installation groove 101 is provided on the end face of the first end of the connecting rod 10, and one end of the guide frame 20 is inserted into the installation groove 101 and connected to the connecting rod 10. With this arrangement, the contact area between the connecting rod 10 and the guide frame 20 can be increased, further enhancing the connection stability between the connecting rod 10 and the guide frame 20.

[0062] Furthermore, a clamping structure is provided between the connecting rod 10 and the guide frame 20, and the connecting rod 10 and the guide frame 20 are clamped and matched through the clamping structure. The setting of the clamping structure can further reduce the possibility of the connecting rod 10 and the guide frame 20 separating, and further increase the connection stability between the connecting rod 10 and the guide frame 20.

[0063] This solution does not limit the specific form of the clamping structure.

[0064] In the embodiment of this solution, the clamping structure includes a clamping hole 202 and a clamping portion 102 that are clamped and matched with each other. The shape of the clamping portion 102 is adapted to the shape of the clamping hole 202. The clamping hole 202 is provided at one end of the guide frame 20 that is inserted into the installation groove 101. The clamping portion 102 is provided in the installation groove 101 and is integrally formed with the connecting rod 10. The clamping portion 102 is inserted into the clamping hole 202 and is clamped with the clamping hole 202.

[0065] In other embodiments of this solution, the clamping hole 202 is provided on the side wall of the installation groove 101, the clamping portion 102 is provided on the side wall of one end of the guide frame 20 that is inserted into the installation groove 101, the clamping portion 102 is integrally formed with the guide frame 20, and the clamping portion 102 is clamped and matched with the clamping hole 202.

[0066] This solution does not limit the specific shape of the clamping hole 202. Among them, it can be set as a circular hole, a special-shaped hole, a polygonal hole or other structures.

[0067] As Figure 4 、 Figure 7 and Figure 8 shown, in this embodiment, the clamping hole 202 is an oval hole. The length direction of the oval hole is the same as the length direction of the connecting rod component. The dimension A of the oval hole along the length direction of the connecting rod component is greater than the dimension B of the oval hole along the width direction of the connecting rod component. With this arrangement, the tensile resistance of the pull rod component can be increased. Moreover, the dimension of the oval hole along the length direction of the connecting rod component is greater than the dimension along the width direction of the connecting rod component. With this arrangement, a greater tensile resistance can be provided on the premise of saving space.

[0068] Furthermore, this solution does not limit the specific number of the clamping structures. In this embodiment, two sets of clamping structures are provided, and the two sets of clamping structures are spaced apart along the width direction of the guide frame 20.

[0069] AsFigures 3 to 6 As shown in the figure, in this embodiment, the connecting rod 10 includes a connecting rod 11 and a connecting block 12 arranged in sequence along the length direction. The cross-sectional area of the connecting block 12 in the transverse direction is larger than that of the connecting rod 11. The mounting groove 101 is arranged on the end face of the connecting block 12 away from the connecting rod 11. With such a setting, the structural strength of the connecting block 12 can be ensured, and the stability of the connection between the connecting rod 10 and the guide frame 20 can be improved.

[0070] As Figures 3 to 5 shown in the figure, further, along the width direction of the connecting rod component, both ends of the mounting groove 101 extend to the two end faces of the connecting block 12 respectively. The guide frame 20 includes a first plate body 21 and a second plate body 22 arranged in sequence along the length direction. The width of the first plate body 21 is smaller than that of the second plate body 22. The clamping hole 202 is arranged on the first plate body 21. The first plate body 21 is inserted into the mounting groove 101. Along the width direction of the guide frame 20, both ends of the first plate body 21 are located outside the mounting groove 101. With such a setting, the convenience of injection molding the connecting rod 10 can be improved.

[0071] As Figure 1 and Figure 3 shown in the figure, in this embodiment, an installation opening 201 is arranged on the guide frame 20. The installation opening 201 is a circular hole. The installation opening 201 penetrates through the guide frame 20 along the perpendicular direction to the extension direction of the connecting rod component. The installation opening 201 is used for installing the valve core component 30. In this embodiment, the installation opening 201 penetrates through the guide frame 20 along the thickness direction of the guide frame 20. With the setting of the installation opening 201, its structure is simple, and it is convenient to realize the assembly of the valve core component 30.

[0072] In this embodiment, the first communication hole 012 and the second communication hole 013 are respectively communicated with the side part of the valve cavity. The valve core component 30 includes a first valve core 31, a second valve core 32 and an elastic part 33. The first valve core 31 and the second valve core 32 are in mutual contact. The elastic part 33 is arranged between the first valve core 31 and the second valve core 32 and provides a force for the first valve core 31 and the second valve core 32 to move away from each other. With such a setting, it is convenient to realize the assembly of the valve core component 30, and the sealing effect of the first valve core 31 and the second valve core 32 on the communication hole of the electric valve can be ensured.

[0073] As Figure 1 and Figure 2 shown in the figure, further, the electric valve further includes a valve cover 60. The valve cover 60 is arranged in the valve cavity. The connecting rod 10 is in guiding cooperation with the valve cover 60. The setting of the valve cover 60 can guide the movement of the connecting rod 10, reduce the possibility of the connecting rod 10 shaking during the movement, improve the smoothness of the movement process of the connecting rod 10, improve the smoothness of the connecting rod component driving the valve core component 30 to move, and improve the stability during valve opening and closing.

[0074] In this embodiment, the valve cover 60 is provided with a through hole 601 which penetrates the valve cover 60 along the axis direction of the valve cavity. The connecting rod 10 is movably inserted into the through hole 601, and the connecting rod 10 is in guiding cooperation with the through hole 601. The structure of the through hole 601 is simple and the guiding effect is excellent.

[0075] In this embodiment, a first anti-rotation structure is provided on the side wall of the through hole 601, and a second anti-rotation structure is provided on the side wall of the connecting rod 10. The first anti-rotation structure and the second anti-rotation structure are in anti-rotation cooperation. The settings of the first anti-rotation structure and the second anti-rotation structure can ensure that the connecting rod component can only move along the axis direction of the valve cavity, avoiding the situation that the connecting rod component rotates during the movement, and improving the stability of the connecting rod component during the movement.

[0076] This solution does not limit the specific forms of the first anti-rotation structure and the second anti-rotation structure.

[0077] As Figure 1 , Figure 3 , Figure 9 and Figure 10 shown, in this embodiment, a first anti-rotation surface 6010 is provided on the side wall of the through hole 601. The first anti-rotation surface 6010 is a plane, and the extending direction of the first anti-rotation surface 6010 is the same as the extending direction of the through hole 601; a second anti-rotation surface 1001 is provided on the side wall of the connecting rod 11. The extending direction of the second anti-rotation surface 1001 is the same as the extending direction of the connecting rod 10. The first anti-rotation surface 6010 and the second anti-rotation surface 1001 are in anti-rotation cooperation.

[0078] In this embodiment, the shape of the through hole 601 is adapted to the shape of the connecting rod 11. Specifically, the outer contour shape of the cross section of the connecting rod 11 is a polygon, and multiple outer side walls of the connecting rod 11 respectively form multiple first anti-rotation surfaces. With such a setting, the structure is simple and it is convenient to realize the guiding and anti-rotation of the through hole 601 to the connecting rod 11.

[0079] Further, the valve body 01 includes a first sleeve 014 and a second sleeve 015. The open ends of the first sleeve 014 and the second sleeve 015 are arranged opposite to each other, and a valve cavity is formed between the first sleeve 014 and the second sleeve 015. The valve cover 60 is an integral structure. The valve cover 60 is located between the first sleeve 014 and the second sleeve 015. One end of the valve cover 60 is inserted into the opening of the first sleeve 014 and connected to the first sleeve 014, and the other end of the valve cover 60 is inserted into the opening of the second sleeve 015 and connected to the second sleeve 015. The valve cover 60 divides the valve cavity into a first chamber 0111 and a second chamber 0112 distributed along the axis direction.

[0080] In this embodiment, along the axial direction of the valve cover 60, first stepped structures and second stepped structures are arranged at intervals on the outer side wall of the valve cover 60. The first stepped structure is in end face limiting fit with the end face of the open end of the first sleeve 014, and the second stepped structure is in end face limiting fit with the end face of the open end of the second sleeve 015. With such an arrangement, the assembly accuracy between the first sleeve 014 and the valve cover 60 can be improved, and the assembly accuracy between the second sleeve 015 and the valve cover 60 can be improved.

[0081] Specifically, the rotor component 40 is located in the first chamber 0111, and the valve core component 30 is located in the second chamber 0112. In this embodiment, the rotor component 40 is located in the first sleeve 014, and the valve core component 30 is located in the second sleeve 015. With such an arrangement, the structure is simple, and the number of components of the electric valve can be reduced as much as possible, and the assembly convenience is relatively strong.

[0082] Furthermore, a first balance channel is formed between the connecting rod 10 and the through hole 601. The two ends of the first balance channel are respectively communicated with the first chamber 0111 and the second chamber 0112. The setting of the first balance channel can prevent the situation that the rotor component 40 is airtight in the first chamber 0111 and generates a pressure difference, and improve the rotation flexibility of the rotor component 40.

[0083] This solution does not limit the specific formation method of the first balance channel.

[0084] Such as Figure 1 、 Figure 9 and Figure 10 As shown, in the embodiment of this solution, a groove structure 6013 is arranged on the side wall of the through hole 601. The groove structure 6013 corresponds to the first anti-rotation surface 6010. The extending direction of the groove structure 6013 is the same as the extending direction of the through hole 601. One end of the groove structure 6013 is communicated with the first chamber 0111, and the other end is communicated with the second chamber 0112. The groove structure 6013 forms the first balance channel.

[0085] In other embodiments of this solution, a diversion groove is arranged on the side wall of the connecting rod 11. The diversion groove corresponds to the second anti-rotation surface 1001. The extending direction of the diversion groove is the same as the extending direction of the connecting rod 11. One end of the diversion groove is communicated with the first chamber 0111, and the other end is communicated with the second chamber 0112. The diversion groove forms the first balance channel.

[0086] Such as Figure 11 and Figure 12As shown, in some other embodiments of this solution, a second balance channel 602 is further provided on the valve cover 60. The second balance channel 602 is eccentrically arranged with respect to the through hole 601. The two ends of the second balance channel 602 are respectively communicated with the first chamber 0111 and the second chamber 0112. The provision of the second balance channel 602 can prevent the situation where the rotor component 40 is airtight in the first chamber 0111 and a pressure difference is generated, improving the flexibility of the rotation of the rotor component 40. And the above arrangement facilitates the processing and forming of the second balance channel 602.

[0087] As Figure 1 and Figure 2 shown, in this embodiment, the through hole 601 includes a guiding hole 6011 and an avoiding hole 6012 that are sequentially communicated in the direction from the connecting rod 10 to the connecting member 50. The aperture size of the guiding hole 6011 is smaller than that of the avoiding hole 6012. The guiding hole 6011 is in guiding fit with the connecting rod 10. One end of the connecting member 50 away from the rotor component 40 passes through the avoiding hole 6012 and extends into the guiding hole 6011 and is in threaded fit with the connecting rod 10.

[0088] Furthermore, the electric valve further includes a bearing 70. The bearing 70 is arranged in the avoiding hole 6012. The connecting member 50 is rotatably arranged in the bearing 70, and the outer peripheral surface of the connecting member 50 is connected to the inner ring of the bearing 70. The provision of the bearing 70 can realize the connection of the connecting member 50, reduce the possibility of the connecting member 50 shaking, and improve the stability of the rotation process of the connecting member 50. And it can reduce the rotational friction of the connecting member 50 and improve the transmission efficiency.

[0089] Specifically, the valve cover 60 includes a first section and a second section that are connected to each other along the axial direction. The diameter of the first section is smaller than that of the second section. The first section is arranged in the first sleeve 014, and one end of the first section away from the second section is arranged in the rotor component 40. The open end of the first sleeve 014 is sleeved on one end of the second section connected to the first section, and the open end of the second sleeve 015 is sleeved on one end of the second section away from the first section. Such an arrangement can further reduce the number of components of the electric valve and improve the structural compactness of the electric valve.

[0090] As Figure 1 and Figure 2As shown, in this embodiment, a limiting portion 501 is provided on the connecting member 50. The electric valve further includes an elastic member 80. The elastic member 80 is arranged on the connecting member 50. The bearing 70 is located between the elastic member 80 and the limiting portion 501. The elastic member 80 and the limiting portion 501 are respectively in contact with the bearing 70. The elastic member 80, the bearing 70 and the limiting portion 501 are sequentially distributed along the direction from the connecting member 50 to the connecting rod 10. The elastic member 80 is used to apply an elastic force to the connecting member 50 so that the limiting portion 501 on the connecting member 50 contacts the bearing 70. With such an arrangement, the elastic member 80 is used to apply a force to the bearing 70, so that the bearing 70 is always in contact and cooperation with the limiting portion 501, eliminating the gap between the bearing 70 and the limiting portion 501, and restricting and limiting the connecting member 50 in the axial direction, that is, the connecting member 50 only has freedom of movement in the rotational direction, reducing or avoiding the possibility of the connecting member 50 moving in the axial direction.

[0091] Specifically, the elastic member 80 includes a spring and a snap ring member connected to each other. The spring is sleeved on the connecting member 50. One end of the spring abuts against the end face of the bearing 70 away from the connecting rod 10. The snap ring member is arranged at the end of the spring away from the bearing 70. The snap ring member is snap-connected to the connecting member 50 and abuts against the end of the spring away from the bearing 70.

[0092] Further, the first communication hole 012 and the second communication hole 013 are respectively communicated with the side portion of the second chamber 0112. The electric valve further includes a valve seat 90. The valve seat 90 is arranged in the second chamber 0112. The valve seat 90 is in guiding cooperation with the valve core component 30. The arrangement of the valve seat 90 can guide the movement of the valve core component 30 and further improve the smoothness of the valve core component 30.

[0093] In this embodiment, the valve seat 90 is arranged in the second chamber 0112. The valve seat 90 includes a first seat body and a second seat body. The first seat body and the second seat body are respectively arranged corresponding to the first communication hole 012 and the second communication hole 013. A first opening is provided on the first seat body, and a second opening is provided on the second seat body. The first opening and the second opening are respectively communicated with the first communication hole 012 and the second communication hole 013.

[0094] Further, the connecting rod component is in limiting cooperation with the valve cover 60 to limit the displacement stroke of the connecting rod component in the axial direction of the valve cavity.

[0095] As Figures 1 to 3 shown, specifically, the stepped surface between the connecting rod 11 and the connecting block 12 forms a first limiting structure 103. The first limiting structure 103 is used to abut and cooperate with the end face of the valve cover 60 close to the valve core component 30 to limit the displacement stroke of the connecting rod component in the axial direction of the valve cavity. With such an arrangement, the structure is simple and no additional limiting structure needs to be provided.

[0096] Further, along the axial direction of the valve cavity, the end of the guide frame 20 away from the connecting rod 10 protrudes from the valve core component 30, and the end face of the end of the guide frame 20 away from the connecting rod 10 forms a second limiting structure 203 and is used for limiting cooperation with the end of the valve cavity away from the rotor component 40. With such a setting, it is possible to avoid the situation where the end face of the valve core component 30 contacts the end of the valve cavity away from the rotor component 40, and avoid the situation where the valve core component 30 is deformed due to extrusion.

[0097] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0098] Unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components and steps set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for the sake of convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods, and devices should be regarded as part of the specification. In all the examples shown and discussed herein, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0099] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal", and "top, bottom" is usually based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description. Without contrary description, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and thus cannot be construed as limiting the protection scope of the present invention; the orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0100] For ease of description, spatial relative terms, such as "above", "over", "on the upper surface", "upper", etc., may be used herein to describe the spatial positional relationship of one device or feature to other devices or features as shown in the figures. It should be understood that the spatial relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is inverted, the device described as "above" or "over" other devices or structures will then be positioned "below" or "under" the other devices or structures. Thus, the exemplary term "above" can include both the orientations of "above" and "below". The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the corresponding explanations for the spatial relative descriptions used herein will be made accordingly.

[0101] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Without additional statements, the above terms have no special meanings, and thus should not be construed as limiting the protection scope of the present invention.

[0102] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various modifications and variations. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An electric valve, characterized in that, Comprising: A valve body (01) provided with a valve cavity, a first communication hole (012) and a second communication hole (013), the first communication hole (012) and the second communication hole (013) are respectively communicated with the valve cavity; A valve core assembly including a connecting rod component and a valve core component (30), the connecting rod component is movably arranged in the valve cavity; the valve core component (30) is installed on the connecting rod component, and the valve core component (30) moves in the valve cavity along with the connecting rod component to connect or cut off the first communication hole (012) and the second communication hole (013); A rotor component (40) located at an end of the connecting rod component away from the valve core component (30), the rotor component (40) is rotatably arranged in the valve cavity; A connecting piece (50), one end of the connecting piece (50) is fixedly arranged on the rotor component (40), the other end of the connecting piece (50) is in threaded cooperation with the connecting rod component to drive the connecting rod component to move along the axial direction of the valve cavity in the valve cavity, and the connecting piece (50) is limited in the axial direction of the valve cavity relative to the valve body (01).

2. The electric valve according to claim 1, characterized in that, The connecting rod component includes a connecting rod (10) and a guide frame (20) sequentially arranged in the direction from the rotor component (40) to the valve core component (30), the connecting rod (10) and the guide frame (20) are fixedly connected, the connecting rod (10) is in threaded cooperation with the connecting piece (50), and the valve core component (30) is installed on the guide frame (20).

3. The electric valve according to claim 2, wherein The electric valve further includes: A valve cover (60) arranged in the valve cavity, the connecting rod (10) is in guiding cooperation with the valve cover (60).

4. The electric valve according to claim 3, characterized in that, The valve cover (60) is provided with a through hole (601), the through hole (601) is arranged through the valve cover (60) along the axial direction of the valve cavity, the connecting rod (10) is movably arranged in the through hole (601), and the connecting rod (10) is in guiding cooperation with the through hole (601).

5. The electric valve according to claim 4, characterized in that, A first anti-rotation structure is arranged on the side wall of the through hole (601), a second anti-rotation structure is arranged on the side wall of the connecting rod (10), and the first anti-rotation structure and the second anti-rotation structure are in anti-rotation cooperation.

6. The electric valve according to claim 4, characterized in that, The valve cover (60) divides the valve cavity into a first chamber (0111) and a second chamber (0112) distributed along the axial direction, the rotor component (40) is located in the first chamber (0111), and the valve core component (30) is located in the second chamber (0112).

7. The electric valve according to claim 6, characterized in that, A first balance channel is formed between the connecting rod (10) and the through hole (601), and both ends of the first balance channel are respectively communicated with the first chamber (0111) and the second chamber (0112).

8. The electric valve according to claim 6, wherein The valve cover (60) is provided with a second balance channel (602), the second balance channel (602) is eccentrically arranged with the through hole (601), and both ends of the second balance channel (602) are respectively communicated with the first chamber (0111) and the second chamber (0112).

9. The electric valve according to claim 4, characterized in that, The through hole (601) includes a guiding hole (6011) and an avoidance hole (6012) that are sequentially communicated in the direction from the connecting rod (10) to the connecting member (50). The aperture size of the guiding hole (6011) is smaller than that of the avoidance hole (6012). The guiding hole (6011) is in guiding cooperation with the connecting rod (10). One end of the connecting member (50) away from the rotor component (40) passes through the avoidance hole (6012) and extends into the guiding hole (6011) to be in threaded cooperation with the connecting rod (10).

10. The electric valve according to claim 9, characterized in that, The electric valve further includes: a bearing (70) disposed in the avoidance hole (6012). The connecting member (50) is rotatably disposed in the bearing (70), and the outer peripheral surface of the connecting member (50) is connected to the inner ring of the bearing (70).

11. The electric valve according to claim 10, wherein, A limiting portion (501) is provided on the connecting member (50). The electric valve further includes: an elastic member (80) disposed on the connecting member (50). The bearing (70) is located between the elastic member (80) and the limiting portion (501). The elastic member (80) and the limiting portion (501) are respectively in contact with the bearing (70). The elastic member (80) is used to apply an elastic force to the connecting member (50) so that the limiting portion (501) on the connecting member (50) abuts against the bearing (70).

12. The electric valve according to claim 1, characterized in that, The electric valve further includes: a valve seat (90) disposed in the valve cavity. The valve seat (90) is in guiding cooperation with the valve core component (30).

13. The electric valve according to claim 2, wherein, An installation opening (201) is provided on the guiding frame (20). The valve core component (30) includes an independent first valve core (31) and a second valve core (32). The first valve core (31) and the second valve core (32) are respectively installed in the installation opening (201). The first valve core (31) and the second valve core (32) are in contact with each other. The first valve core (31) is correspondingly arranged with the first communication hole (012), and the second valve core (32) is correspondingly arranged with the second communication hole (013).

14. The electric valve according to claim 3, characterized in that, The connecting rod component is in limiting cooperation with the valve cover (60) to limit the displacement stroke of the connecting rod component in the axial direction of the valve cavity.

15. The electric valve according to claim 14, wherein A stepped surface is provided on the side wall of the connecting rod component, and the stepped surface is used for limiting cooperation with the valve cover (60).

16. The electric valve according to claim 2, wherein The first communication hole (012) and the second communication hole (013) are respectively communicated with the side part of the valve cavity. Along the axial direction of the valve cavity, one end of the guiding frame (20) away from the connecting rod (10) protrudes from the valve core component (30), and one end of the guiding frame (20) away from the connecting rod (10) is used for limiting cooperation with one end of the valve cavity away from the rotor component (40).

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