An electric valve device

Abstract

The object of the present invention is to provide an electric valve device, comprising a valve body assembly and a valve body assembly, wherein the valve body assembly is fixedly connected or limit-connected to the valve body assembly; the valve body assembly comprises a valve body and a valve core component, the valve body is provided with inlet and outlet pipes, at least part of the valve core component is located in the valve body, the valve body assembly is transmission-connected to the valve core component, and the valve body assembly can drive the valve core component to rotate; the valve core component includes a sealing column surface portion, the sealing column surface portion is a surface formed by an arc segment moving in a direction parallel to the axis of the valve core component, the valve core component can block the inlet and outlet pipes, and the valve core component has a better use effect.

Description

Technical Field

[0001] The present invention relates to the technical field of fluid control, and in particular to an electric valve device. Background Art

[0002] An electric valve device usually includes a valve body assembly and a valve body assembly. The valve body assembly and the valve body assembly can be connected in a detachable manner. The motor of the valve body assembly is transmission-connected to the valve core component of the valve body assembly. When the motor rotates, the valve core component can be driven to rotate to achieve fluid switching, on-off or flow regulation. Summary of the Invention

[0003] The object of the present invention is to provide an electric valve device comprising a valve body assembly and a valve body assembly, wherein the valve body assembly is fixedly connected or limit-connected to the valve body assembly;

[0004] The valve body assembly includes a valve body and a valve core component. The valve body is provided with an inlet and outlet pipes. At least part of the valve core component is located in the valve body. The valve body assembly is in transmission connection with the valve core component. The valve body assembly can drive the valve core component to rotate.

[0005] The valve core component includes a sealing column surface portion, which is a surface formed by an arc segment moving in a direction parallel to the axis of the valve core component. The valve core component can block the inlet and outlet pipes.

[0006] The electric valve adopts a new valve core component structure, which has a better use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 A split structural diagram of a specific embodiment of the electric valve device provided by the present invention;

[0008] Figure 2 This is a split structural diagram of the valve body assembly;

[0009] Figure 3 It is a cross-sectional view of the valve body assembly in one direction;

[0010] Figure 4 is a cross-sectional view of the valve body assembly in another direction;

[0011] Figure 5 It is a structural diagram of the valve body excluding the valve cover;

[0012] Figure 6 A top view of the valve body excluding the valve cover;

[0013] Figure 7 It is a structural schematic diagram of a specific implementation of the valve core component;

[0014] Figure 8 It is a structural schematic diagram of another specific embodiment of the valve core component;

[0015] Figure 9 Schematic diagram of the structure of the valve cover;

[0016] Figure 10 It is a partial cross-sectional schematic diagram of the valve body assembly;

[0017] Figure 11 This is the front view of the Driving Base;

[0018] Figure 12 It is a cross-sectional schematic diagram of the electric valve device.

[0019] Figure 1-12 The reference numerals in the figures are described as follows:

[0020] 1 valve body assembly, 11 valve body, 111 valve cavity, 112 valve port, 113 mounting port, 114 valve cover, 114b sealing ring, 114c screw, 114d valve cover matching hole, 1141 valve body connecting portion, 11411 valve body connecting groove portion, 11412 valve body connecting matching portion, 11413 protruding portion, 115 annular boss portion, 115a transition slope, 116 valve bottom, 116a valve bottom matching hole portion, 12 inlet and outlet pipes, 13 valve core component, 131 valve core portion, 131a sealing column portion, 131b pit, 1311 core layer, 1312 rubber layer, 132 power input shaft portion, 132a mounting groove, 133 support shaft portion, 14 friction protection component;

[0021] 2 valve body assembly, 21 drive housing, 211 housing sealing portion, 22 drive base, 221 base sealing portion, 222 sealing ring accommodating portion, 223 base through-hole portion, 23 motor, 231 lead, 232 motor connecting portion, 233 motor shaft, 24 sealing ring, 25 lead through-hole portion, 26 transmission member, 261 first transmission hole portion, 262 second transmission hole portion, 27 drive assembly connecting portion, 271 drive assembly groove portion, 272 drive assembly through-hole portion, 2721 first drive assembly through-hole portion, 2722 second drive assembly through-hole portion, 273 recessed portion;

[0022] 3 fasteners, 31 penetration portion, 32 clamping portion, 321 clamping matching portion, 322 clamping limiting portion, 33 connecting portion. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] Please refer to Figure 1-12 , Figure 1This is a split structure diagram of a specific embodiment of the electric valve device provided by the present invention. Figure 2 This is the split structure diagram of the valve body assembly. Figure 3 It is a cross-sectional view of the valve body assembly in one direction. Figure 4 It is a cross-sectional view of the valve body assembly in another direction. Figure 5 This is a schematic diagram of the structure of the valve body without the valve cover. Figure 6 This is a top view of the valve body without the valve cover. Figure 7 It is a structural diagram of a specific implementation of the valve core component. Figure 8 FIG. 1 is a structural diagram of another specific embodiment of the valve core component. Figure 9 It is the structural diagram of the valve cover. Figure 10 It is a partial cross-sectional diagram of the valve body assembly. Figure 11 This is the front view of the Driving Base. Figure 12 It is a cross-sectional schematic diagram of the electric valve device.

[0025] like Figure 1-6 As shown, the present invention provides an electric valve device, including a valve body assembly 1 and a valve body assembly 2. The valve body assembly 1 includes a valve body 11 and an inlet and outlet pipes 12 arranged on the valve body 11. The inlet and outlet pipes 12 and the valve body 11 can be an integrated structure, such as being integrally formed during injection molding, or the inlet and outlet pipes 12 and the valve body 11 can also be manufactured separately and then assembled into one by welding, flange connection, etc.; the valve body 11 has a valve cavity 111, and the cavity wall of the valve body 11 is provided with a valve port 112 for connecting the inlet and outlet pipes 12.

[0026] Here, the embodiment of the present invention does not limit the number of inlet and outlet pipes 12, and can be designed according to actual needs. Generally speaking, the number of inlet and outlet pipes 12 can be two or more, and the number of valve ports 112 can be consistent with the number of inlet and outlet pipes 12, and they can be arranged in a one-to-one correspondence. It can be understood that the number of inlet and outlet pipes 12 actually determines the type of electric valve device provided by the present invention. If the number of inlet and outlet pipes 12 is only two, the valve device can be a two-way guide valve. If the number of inlet and outlet pipes 12 is three or more, the valve device can be a multi-way valve.

[0027] The valve body assembly 1 also includes a valve core component 13, at least a portion of which is disposed within the valve body 11. The valve body assembly 2 is in driving connection with the valve core component 13, for driving the valve core component 13 to rotate within the valve body 11. The valve core component 13 has a sealing cylindrical portion 131a, which is a surface formed by an arc segment moving along a set direction. The set direction is a direction parallel to the axis of the valve core component, which is the axis of a power input shaft 132 (described below).

[0028] The extension line of the center of the arc segment in the set direction is the central axis of the sealing cylindrical portion 131a, which is coaxial with the rotation center line of the valve core component 13, and the central axis corresponding to the sealing cylindrical portion 131a is coplanar with the central axis of the inlet and outlet pipes 12; it should be noted that the coplanarity of the central axis corresponding to the sealing cylindrical portion 131a and the central axis of the inlet and outlet pipes 12 here means that the central axis of any inlet and outlet pipe 12 is coplanar with the central axis of the sealing cylindrical portion 131a, but this does not necessarily mean that the central axes of the inlet and outlet pipes 12 are also coplanar.

[0029] When the sealing column surface 131a rotates to an area where it overlaps with the valve port 112, the sealing column surface 131a has a set compression amount. In an embodiment of the present invention, the central axis corresponding to the sealing column surface 131a is coaxial with the rotation centerline of the valve core component 13, and the central axis corresponding to the sealing column surface 131a is coplanar with the central axis of the inlet and outlet pipes 12, so that as long as the sealing column surface 131a rotates to an area where it overlaps with the valve port 112, the sealing column surface 131a can be compressed, which can actually partially seal the valve port 112. As the overlapping area between the sealing column surface 131a and the valve port 112 increases, the sealing amount will continue to increase until it is completely sealed. In this type of valve device, the sealing performance of the valve core component 13 and the valve port 112 is less related to the positioning accuracy of the valve body assembly 2, which can greatly reduce the manufacturing difficulty of the valve body assembly 2.

[0030] Here, the embodiment of the present invention does not limit the above-mentioned set compression amount. During specific implementation, technical personnel in this field can set it according to actual needs, as long as it can meet the sealing requirements during use. On the premise of meeting the sealing requirements, the above-mentioned compression amount can be appropriately reduced to reduce the rotational torque of the valve core component 13.

[0031] Combine Figure 7 、 Figure 8 The valve core component 13 may include a valve core portion 131 and a power input shaft portion 132 and a support shaft portion 133 connected to the valve core portion 131 and coaxially arranged. The power input shaft portion 132 and the support shaft portion 133 are both coaxially arranged with the rotation center line of the valve core component 13. The valve core portion 131 has the aforementioned sealing cylindrical surface 131a. The power input shaft portion 132 and the support shaft portion 133 can be rotatably mounted on the valve body 11, and the power input shaft portion 132 can be transmission-connected to the valve body assembly 2 to receive the driving force of the valve body assembly 2.

[0032] The connections between the power input shaft 132, the support shaft 133 and the valve body 11 can be provided with friction protection components 14 to provide friction protection for the two shafts and reduce the rolling friction between the shafts and the valve body 11. In this way, when the sealing column surface 131a rotates to an overlapping area with the valve port 112, the friction between the valve core component 13 and the valve body 11 can be mainly concentrated between the sealing column surface 131a and the valve port 112, which can greatly reduce the rotational torque of the valve core component 13. Accordingly, the driving force required to be provided by the valve body assembly 2 can be reduced, the power requirement for the valve body assembly 2 can be reduced, and it is also beneficial to reduce costs.

[0033] The friction protection component 14 can be any one of a bearing, a sleeve, a bushing, a rubber ring, etc. Specifically, in the embodiment of the present invention, flexible components such as a flexible sleeve and a rubber ring can be used to achieve the above functions. In this case, the friction protection component 14 also has a certain elastic deformation ability in the radial direction of the corresponding shaft part, which can better absorb friction and help eliminate vibration noise. Figure 7 、 Figure 8 , mounting grooves 132a can be provided on the power input shaft 132 and the support shaft 133, which can be used to accommodate the installation of the above-mentioned friction protection component 14; it can be understood that the mounting groove 132a is not necessarily provided on the shaft portion, and can also be provided at the connection between the valve body 11 and the corresponding shaft portion, or, can also be provided on the corresponding shaft portion and the valve body 11 at the same time. In addition, the above-mentioned mounting groove 132a is actually not necessary, and it is actually related to the type of friction protection component 14. If the friction protection component 14 in the form of a bearing is used, the above-mentioned mounting groove 132a may not be provided.

[0034] Here, this embodiment does not limit the installation positions of the power input shaft 132 and the support shaft 133 on the valve body 11. The specific positions can be set according to actual conditions as long as they can meet the use requirements.

[0035] In an exemplary scheme, as shown in the accompanying drawings, the valve body 11 can be provided with a mounting port 113, and the valve core component 13 can be installed in the valve cavity 111 through the mounting port 113. After the valve core component 13 is installed in place, the valve cover 114 can be fixed by connecting parts in the form of screws 114c to seal the above-mentioned mounting port 113. A sealing component in the form of a sealing ring 114b can also be provided between the valve cover 114 and the mounting port 113 to seal the connection between the two; the part where the valve body 11 and the valve cover 114 are opposite to each other is the valve bottom 116, the support shaft portion 133 can be installed on the valve bottom 116, and the power input shaft portion 132 can be installed on the valve cover 114.

[0036] Specifically, the valve cover 114 is provided with a valve body connecting portion 1141, which is roughly a hollow cylindrical structure protruding from the upper end of the valve cover 114 (excluding the portion of the valve body connecting portion 1141). The valve body connecting portion 1141 includes a valve cover matching hole portion 114d, and at least part of the power input shaft portion 132 can be located in the valve cover matching hole portion 114d. The valve bottom 116 can be provided with a valve bottom matching hole portion 116a, and at least part of the support shaft portion 133 can be located in the valve bottom matching hole portion 116a. The aforementioned friction protection component 14 can be arranged between the power input shaft portion 132 and the valve cover matching hole portion 114d, and between the support shaft portion 133 and the valve bottom matching hole portion 116a.

[0037] In each of the above-described embodiments, the valve core component 13 is provided with both a power input shaft portion 132 and a support shaft portion 133. Both shaft portions are mounted on the valve body 11, thereby forming a fixed-end beam structure with both ends fixed. This provides a high degree of reliability in the installation of the valve core component 13 within the valve body 11. Alternatively, the valve core component 13 may employ a cantilever beam structure, i.e., the valve core component 13 may be provided with only the power input shaft portion 132 and then be mounted and fixed to the valve body 11 solely via the power input shaft portion 132. This type of valve device can have a relatively simple structure.

[0038] Combine Figure 4 The valve core 131 can include a core layer 1311 made of a hard material such as metal and an outer rubber coating 1312. The core layer 1311 can be connected to the power input shaft 132 and the support shaft 133. In practice, the core layer 1311, the power input shaft 132, and the support shaft 133 can be an integrated structure. The rubber coating 1312 is a flexible layer with a certain degree of elasticity, which can ensure sealing performance with the valve port 112. Preferably, the rubber coating 1312 can be made of wear-resistant rubber to increase the service life of the valve core component 13.

[0039] like Figure 8 As shown, the sealing column surface portion 131a can be an incomplete cylinder, and one or more pits 131b can be provided in the central area thereof. Without affecting the sealing performance, these pits 131b can reduce the friction area of ​​the sealing column surface portion 131a, thereby reducing the friction force and reducing the rotational torque of the valve core component 13 to a greater extent.

[0040] The cavity wall of the valve cavity 111 may be provided with an annular boss portion 115, which may enclose and form the valve port 112. In practice, when the valve core component 13 rotates until the sealing column portion 131a thereof overlaps with the valve port 112, the annular boss portion 115 is actually used to squeeze the sealing column portion 131a, thereby achieving a close seal between the sealing column portion 131a and the valve port 112.

[0041] Moreover, by arranging the above-mentioned annular boss portion 115 at the valve port 112, it is also possible to ensure that the sealing column surface portion 131a will only be squeezed and deformed when there is an overlapping area with the valve port 112. That is to say, there may be no squeezing force between the sealing column surface portion 131a and the other part of the cavity wall of the valve cavity 111 (the cavity wall where the annular boss portion 115 is not arranged), which can further reduce the torque requirement of the valve core component 13 during the rotation process.

[0042] In fact, the sealing column surface portion 131a and the other parts of the cavity wall of the valve cavity 111 can also be clearance-fitted. In this way, there can be no friction between the sealing column surface portion 131a and the other parts of the cavity wall. Under the premise that the compression between the sealing column surface portion 131a and the annular boss portion 115 remains unchanged, the rotational torque of the valve core component 13 can be minimized. In addition, this design can also facilitate installation. Figure 4 For reference, the valve core component 13 can be installed with the valve core portion 131 of the valve core component 13 facing the cavity wall where the annular boss portion 115 is not provided, so there is basically no installation resistance.

[0043] Combine Figure 6 The annular boss portion 115 may also be provided with a transition slope 115a, which can guide and reduce resistance to the rotation of the valve core component 13, so that the valve core component 13 can be rotated onto the annular boss portion 115 more smoothly, thereby sealing the valve port 112.

[0044] When there are multiple valve ports 112, the annular boss portions 115 at the valve ports 112 may be separated from each other, such as Figure 4 Alternatively, the annular boss portion 114 at each valve port 112 may also be connected to each other to form an integral annular boss portion 115, such as Figure 6 shown.

[0045] The valve body assembly 2 can specifically be an electric drive component such as an electric actuator, which can be fixedly connected to the valve body assembly 1 or can be limitedly connected. For example, the valve body assembly 2 can be clamped on the valve body assembly 1.

[0046] For details, please refer to Figure 1 The electric valve device provided in this embodiment includes a valve body assembly 1 and a valve body assembly 2, and the valve body assembly 1 and the valve body assembly 2 are mainly connected by a snap-fit ​​component 3.

[0047] Please refer to Figure 10The valve body assembly 2 includes a drive housing 21, a drive base 22, and a motor 23. Specifically, the motor 23 includes a lead 231 and a motor connection portion 232. The motor connection portion 232 is provided with a connecting plate through-hole. The motor is placed on the drive base 22. A threaded hole is provided at a position corresponding to the connecting plate through-hole. A bolt passes through the connecting plate through-hole and is threadedly connected to the threaded hole of the drive base 22, thereby pressing the motor 23 against the drive base 22.

[0048] In addition, please refer to Figure 10 、 Figure 11 The driving base 22 is provided with a base sealing portion 221, and the driving housing 21 is provided with a housing sealing portion 211. When the driving housing 21 is connected to the driving base 22, the housing sealing portion 211 can be pressed against the base sealing portion 221. The driving housing 21 is provided with a driving housing through hole, and a threaded hole is provided at a corresponding position of the driving base 22 relative to the housing through hole. The bolt passes through the driving housing through hole and is threadedly connected to the above-mentioned threaded hole, and the driving housing 21 is axially pressed against the driving base 22.

[0049] In order to increase the sealing effect at the connection between the driving base 22 and the driving shell 21, the driving base 22 provided in this embodiment also includes a sealing ring accommodating portion 222, which is roughly a structure formed by being recessed along the base sealing portion 221. A sealing ring 24 is placed in the sealing ring accommodating portion 222. When the driving shell 21 and the driving base 22 are connected, the sealing ring 24 can be squeezed by the driving base 22 and the driving shell 21, so that the sealing ring 24 can simultaneously axially abut the driving base 22 and the driving shell 21, thereby improving the sealing effect between the driving base 22 and the driving shell 21. Of course, the sealing ring accommodating portion 222 can also be formed in the driving shell 21. In this case, the sealing ring accommodating portion 222 is roughly a structure formed by being recessed along the shell sealing portion 211; or both the driving shell 21 and the driving base 22 are formed with a sealing ring accommodating portion 222.

[0050] Please refer to Figure 1 In this embodiment, the valve body assembly 2 further includes a lead through-hole portion 25, through which the lead 231 of the motor 23 passes, that is, one end of the lead 231 is located outside the accommodating cavity formed by the drive housing 21 and the drive base 22, and the other end is located inside the accommodating cavity formed by the drive housing 21 and the drive base 22. The lead 231 is connected to an external power supply and can transmit the electrical energy required for the rotation of the motor 23. It is worth noting that the lead through-hole portion 25 can be formed on the drive housing 21, the drive base 22, or formed by both the drive housing 21 and the drive base 22.

[0051] Please continue to refer to Figure 10The motor 23 further includes a motor shaft 233. When the motor 23 is connected to an external power source, the motor shaft 233 can rotate. In this embodiment, the outer contour of the cross section of the output end of the motor shaft 233 is not circular.

[0052] The driving base 22 further includes a base through-hole portion 223 . The base through-hole portion 223 is a through-hole structure that generally passes through the upper and lower surfaces of the driving base 22 .

[0053] The valve body assembly 2 provided in this embodiment also includes a transmission member 26, which is inserted into the base through-hole portion 223. The transmission member 26 includes a first transmission hole portion 261. The inner contour of the cross section of the first transmission hole portion 261 is not circular. The output end of the motor shaft 233 is inserted into the first transmission hole portion 261, so that at least part of the output end of the motor shaft 233 is located in the first transmission hole portion 261, and when the motor shaft 233 rotates, it can drive the transmission member 26 to rotate.

[0054] In addition, the transmission member 26 provided in this embodiment also includes a second transmission hole portion 262. The cross-section of the second transmission hole portion 262 is not circular, and the cross-section of the upper end of the power input shaft portion 132 is also not circular. After the valve body assembly 1 and the valve body assembly 2 are assembled, one end of the power input shaft portion 132 can be inserted into the second transmission hole portion 262, so that part of the power input shaft portion 132 is located in the second transmission hole portion 262. When the transmission member 26 rotates driven by the motor shaft 233, the power input shaft portion 132 can also rotate driven by the transmission member 16. Part of the transmission member 26 is located in the valve body connecting portion 1141, and part of the transmission member 26 is located in the drive assembly connecting portion 27.

[0055] Please refer to Figure 1 The driving base 22 provided in this embodiment also includes a driving component connecting portion 27, which protrudes from the lower end of the driving base 22 (excluding the portion of the driving component connecting portion 27) and is roughly a hollow cylindrical structure. It can be coaxially arranged with the base through hole portion 223.

[0056] The valve body connecting portion 1141 can be inserted into the inner hole of the driving assembly connecting portion 27 , so that at least a portion of the valve body connecting portion 1141 is located inside the driving assembly connecting portion 27 .

[0057] Please refer to Figure 11 、 Figure 12The valve body connecting part 1141 is provided with a valve body connecting groove part 11411 and a valve body connecting fitting part 11412. The valve body connecting groove part 11411 is roughly a structure formed by being recessed along the surface of the valve body connecting part 1141. The valve body connecting fitting part 11412 can be a through hole structure formed by passing through the two outer walls of the valve body connecting part 1141, or it can be a structure formed by being recessed along the surface of the valve body connecting part 1121. In this embodiment, the valve body connecting fitting part 11412 is taken as an example of a structure formed by being recessed along the surface of the valve body connecting part 1121.

[0058] In contrast, after the valve body connection portion 1141 and the drive assembly connection portion 27 are matched, the positions of the valve body connection groove portion 11411 and the valve body connection matching portion 11412 relative to the drive assembly connection portion 27 are respectively provided with a drive assembly groove portion 271 and a drive assembly through-hole portion 272. The drive assembly groove portion 271 is roughly a structure formed by a surface depression of the drive assembly connection portion 27. The drive assembly through-hole portion 272 includes a first drive assembly through-hole portion 2721 and a second drive assembly through-hole portion 2722. In the plane where the cross section of the valve body connection matching portion 11412 is located, the orthographic projection of the first drive assembly through-hole portion 2721 toward the plane and the orthographic projection of the valve body connection matching portion 11412 toward the plane have an overlapping area, and the orthographic projection of the second drive assembly through-hole portion 2722 toward the plane and the orthographic projection of the valve body connection matching portion 11412 toward the plane have an overlapping area. When the valve body connection fitting portion 11412 adopts a through-hole structure, under ideal conditions, the first drive component through-hole portion 2721 , the valve body connection fitting portion 11412 , and the second drive component through-hole portion 2722 are coaxially arranged.

[0059] The valve device provided in this embodiment further includes a fastener 3 , which includes a penetrating portion 31 and a fastening portion 32 .

[0060] Specifically, the penetration portion 31 is roughly a straight columnar structure. When installed, it will pass through the first drive component through-hole portion 2721, the valve body connection fitting portion 11412 and the second drive component through-hole portion 2722 in sequence (the above statement only applies to the first drive component through-hole portion 2721, the valve body connection fitting portion 11412 and the second drive component through-hole portion 2722), that is, part of the penetration portion 31 is located in the first drive component through-hole portion 2721, part is located in the valve body connection fitting portion 11412, and part is located in the second drive component through-hole portion 2722. The insertion end of the penetration portion 31 may or may not pass through the second drive component through-hole portion 2722.

[0061] This embodiment adopts a solution in which the insertion end of the penetration portion 31 penetrates through the through hole portion 2722 of the second drive component and then exits, which can increase the matching length between the penetration portion 31 and the through hole portion 2722 of the second drive component, thereby improving the connection reliability of the valve body component 1 and the valve body component 2.

[0062] On the other hand, the snap-fit ​​part 3 is made of elastic metal material, and also includes a snap-fitting portion 32, which includes a snap-fitting portion 321. Specifically, the snap-fitting portion 321 cooperates with the valve body connecting groove portion 11411, that is, at least part of the snap-fitting portion 321 is located in the valve body connecting groove portion 11411, and the snap-fitting portion 321 cooperates with the drive component groove portion 271, that is, the snap-fitting portion 321 is located in the drive component groove portion 271.

[0063] In the plane where the cross-section of the electric valve device is located, there is an overlapping part between the orthographic projection of the snap-fitting part 321 on the plane and the orthographic projection of the valve body connection groove part 11411 on the plane. In the axial direction where the motor shaft 233 of the electric valve device is located, there is an overlapping area between the orthographic projection of the snap-fitting part 321 on the axis and the orthographic projection of the valve body connection groove part 11411 on the axis.

[0064] Through the above arrangement, when an external force drives the valve body assembly 1 and the valve body assembly 2 to separate, if the direction of the external force on the valve body assembly 1 is vertically downward and the direction of the external force on the valve body assembly 2 is vertically upward, then due to the existence of the penetration portion 31, and the penetration portion 31 passes through the valve body connection mating portion 11412 of the valve body connection portion 1141 and the drive assembly connection through hole portion 272 of the drive assembly connection portion 27, the external force cannot generally separate the valve body assembly 1 and the valve body assembly 2 (unless the penetration portion 31 of the fastener 3 or the drive assembly through hole portion 272 is damaged).

[0065] The snap-fitting portion 32 provided in this embodiment also includes a snap-fitting limiting portion 322. Specifically, the snap-fitting limiting portion 322 is formed at both ends of the snap-fitting portion 321, and the end of the snap-fitting limiting portion 322 away from the snap-fitting portion 321 is closer to the insertion portion 31 than the end close to the snap-fitting portion 321, and the snap-fitting limiting portion 322 can be abutted against the drive assembly connecting portion 27. It is worth noting that only one snap-fitting limiting portion 322 can be provided, and the snap-fitting limiting portion 322 is located on the side of the snap-fitting portion 321 that is relatively away from the insertion portion 31.

[0066] The snap-fit ​​limit portion 322 can be abutted against the drive component connection portion 27, which means that the snap-fit ​​limit portion 322 can abut against the drive component connection portion 27, or when the penetration portion 31 of the fastener 3 penetrates into or out of the valve body connection fitting portion 11412, the snap-fit ​​limit portion 322 can abut against the drive component connection portion 27.

[0067] Through the above settings, when the snap-fitting portion 321 is matched with the valve body connecting groove portion 11411, the snap-fitting limit portion 321 can be against the drive assembly connection portion 27. At this time, if an external force is applied to the snap fastener 3 (the direction of the external force is the direction in which the penetration portion 31 penetrates the valve body connecting fitting portion 11412), the external force must cause the snap-fitting limit portion 322 located on the side relatively away from the penetration portion 31 to deform and the snap-fitting portion 321 to separate from the valve body connecting groove portion 11411 before the snap fastener can be disengaged. Compared with the snap fastener 3 without the snap-fitting limit portion 322, the setting of the snap-fitting limit portion 322 makes the external force required to separate the valve body assembly 1 and the valve body assembly 2 greater, thereby making the connection between the valve body assembly 1 and the valve body assembly 2 more reliable.

[0068] In addition, the snap fastener 3 provided in this embodiment also includes a connecting portion 33, which directly or indirectly connects the penetration portion 31 and the clamping portion 32. When the valve body assembly 1 and the valve body assembly 2 need to be separated, an external force can be applied to the connecting portion 33, so that the penetration portion 31 passes through the valve body connection fitting portion 11412 and the drive assembly through-hole portion 272, and at the same time, the clamping fitting portion 321 is separated from the valve body connection groove portion 11411, thereby separating the snap fastener 3 from the valve body assembly 1 and the valve body assembly 2, so as to carry out the subsequent separation of the valve body assembly 1 and the valve body assembly 2.

[0069] In addition, the valve body connection portion 1141 provided in this embodiment also includes a protrusion 11413, which radially protrudes from the remaining portion of the valve body connection portion 1141. In addition, the drive assembly connection portion 27 also includes a recessed portion 273, which is recessed in the remaining portion of the drive assembly connection portion 27. When the valve body connection portion 1141 is matched with the drive assembly connection portion 27, the protrusion 11413 is matched with the recessed portion 273, so that at least part of the protrusion 11413 is located in the recessed portion 273.

[0070] The protrusion 11413 and the recess 273 cooperate so that the outer contour of the valve body connection portion 1141 is not circular, and the inner contour of the drive assembly connection portion 27 is also not circular, thereby preventing the valve body assembly 1 and the valve body assembly 2 from rotating relative to each other.

[0071] In this embodiment, the number of the protrusions 11413 and the number of the recesses 273 are both 3. Of course, it can be understood that the number of the protrusions 11413 and the recesses 273 can be set to any other number.

[0072] It is worth noting that the valve body connection mating portion 11412 can be formed on the protrusion 11413, and the valve body connection groove portion 11411 can also be formed on the protrusion 11413. In this embodiment, the valve body connection mating portion 11412 and the valve body connection groove portion 11411 are formed on two different protrusions 11413. The valve body connection mating portion 11412 and the valve body connection groove portion 11411 are formed on the protrusion 11413, which helps save space and cleverly integrates the functions of preventing relative rotation of the valve body assembly 1 and the valve body assembly 2 and positioning the valve body assembly 1 and the valve body assembly 2.

[0073] The snap fastener 3 used in this embodiment has one side bent and the other side straight. Compared with the solution with bent sides, the structure of the snap fastener 3 is simplified, and the production efficiency of the snap fastener 3 can be improved; if the snap fastener 3 does not adopt the structure of the penetration portion 31 but adopts a structure with clamping portions 32 on both sides, when force is applied to the valve body assembly 1 and the valve body assembly 2 away from each other, the clamping fitting portion 321 easily slides out in the direction away from the outside of the axis and thus disengages from the valve body connection groove portion 11411, and the force is relatively small; in this solution, since the drive assembly through hole portion 272 is not a groove structure, the penetration portion 31 cannot slide out away from the outside of the axis toward the valve body connection fitting portion 11412, so it is necessary to destroy at least one of the snap fastener 3 and the drive assembly through hole portion 272 to separate the valve body assembly 1 and the valve body assembly 2, so that the connection between the valve body assembly 1 and the valve body assembly 2 is more reliable.

[0074] Specifically, the electric valve device provided in this embodiment, without damaging its components, only applies force to the fastener 3 in the direction of the penetration portion 31 disengaging from the valve body connection fitting portion 11412, so that the fastener 3 is first separated from the valve body assembly 1 and the valve body assembly 2, and then the valve body assembly 1 and the valve body assembly 2 are further separated. If both sides of the fastener 3 adopt the method of a clamping portion 32, then when the valve body assembly 1 and the valve body assembly 2 simultaneously apply a pulling force away from each other, there is also a possibility that the fastener 3 will be separated from the valve body connection groove portion 11411, thereby separating the valve body assembly 1 and the valve body assembly 2.

[0075] When assembling the valve body assembly 1 and the valve body assembly 2, first insert the valve body connecting part 1141 into the drive assembly connecting part 27. At the same time, it is necessary to ensure that the motor shaft 233 is inserted into the first transmission hole part 261 and the power input shaft part 132 is inserted into the second transmission hole part 262. Then align the penetration part 31 with the drive assembly through-hole part 272 and the valve body connection matching part 11412, and at the same time ensure that the snap-fit ​​part 32 can be snapped into the direction of the valve body connection groove part 11411 to press the fastener 3 in. In the process of pressing the fastener 3, the snap-fitting part 322 away from the penetration part 31 relative to the snap-fitting part 321 can be deformed under the action of this force. As the snap-fitting part 3 is pressed in, the snap-fitting part 321 can pass through the drive assembly groove part 271 and abut against the valve body connection groove part 11411, and the snap-fitting part 322 can abut against the drive assembly connecting part 27, thereby realizing the connection between the valve body assembly 1 and the valve body assembly 2.

[0076] The above are only preferred embodiments of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An electric valve device, characterized in that: It comprises a valve body assembly (1) and a drive assembly (2), wherein the valve body assembly (1) and the drive assembly (2) are fixedly connected or position-limitedly connected; The valve body assembly (1) comprises a valve body (11) and a valve core component (13); the valve body (11) is provided with an inlet and outlet pipes (12); at least a portion of the valve core component (13) is located within the valve body (11); the drive assembly (2) is in transmission connection with the valve core component (13); and the drive assembly (2) is capable of driving the valve core component (13) to rotate; The valve core component (13) includes a sealing column surface portion (131a), the sealing column surface portion (131a) being a surface formed by an arc segment moving in a direction parallel to the axis of the valve core component, and the valve core component (13) is capable of sealing the inlet and outlet pipes (12); The valve body (11) comprises a mounting opening (113) for mounting the valve core component (13) and a valve cover (114) for blocking the mounting opening (113); the valve cover (114) is provided with a valve body connecting portion (1141); the valve body connecting portion (1141) is provided with a valve body connecting groove portion (11411) and a valve body connecting fitting portion (11412); The driving assembly (2) includes a driving base (22), the driving base (22) further includes a driving assembly connecting portion (27), the driving assembly connecting portion (27) includes a driving assembly groove portion (271) and a driving assembly through-hole portion (272), and the driving assembly through-hole portion (272) includes a first driving assembly through-hole portion (2721) and a second driving assembly through-hole portion (2722); The drive assembly (2) is clamped to the valve body assembly (1); the valve device further comprises a snap-fit ​​member (3), the snap-fit ​​member (3) comprises a penetration portion (31) and a clamping portion (32), the clamping portion (32) comprises a clamping fitting portion (321); the penetration portion (31) sequentially passes through the first drive assembly through-hole portion (2721), the valve body connection fitting portion (11412) and the second drive assembly through-hole portion (2722), and a portion of the clamping fitting portion (321) is located in the valve body connection groove portion (11411) and the drive assembly groove portion (271).

2. The electric valve device according to claim 1, characterized in that The valve core component (13) comprises a valve core portion (131) and a power input shaft portion (132), and the power input shaft portion (132) is in transmission connection with the drive assembly (2); The valve core portion (131) includes the sealing cylindrical portion (131a), the power input shaft portion (132) is rotatable relative to the valve body (11), and the axis of the power input shaft portion (132) is coaxial with the rotation center line of the valve core component (13).

3. The electric valve device according to claim 2, characterized in that: The valve cover (114) comprises a valve cover matching hole portion (114d), and at least a portion of the power input shaft portion (132) is located in the valve cover matching hole portion (114d).

4. The electric valve device according to claim 2, characterized in that The valve core component (13) further includes a support shaft portion (133), wherein the support shaft portion (133) is rotatable relative to the valve body (11), and an axis of the support shaft portion (133) is coaxial with a rotation centerline of the valve core component (13); A friction protection component (14) is provided at the connection between the support shaft portion (133) and the valve body (11); the valve body (11) includes a valve port (112), and the friction protection component (14) can come into contact when the valve core component (13) rotates so that the sealing column portion (131a) covers at least a portion of the valve port (112).

5. The electric valve device according to claim 4, characterized in that: The valve body (11) includes a valve bottom (116), the valve bottom (116) includes a valve bottom matching hole portion (116a), and at least a portion of the support shaft portion (133) is located in the valve bottom matching hole portion (116a); When the sealing column portion (131a) covers at least a portion of the valve port (112), the friction protection component (14) can abut against the valve bottom matching hole portion (116a).

6. The electric valve device according to any one of claims 1 to 5, characterized in that: The sealing column surface portion (131a) is provided with a recess (131b).

7. The electric valve device according to any one of claims 1 to 5, characterized in that: The valve body (11) has a valve cavity (111), a cavity wall of the valve cavity (111) is provided with an annular boss portion (115), and the annular boss portion (115) encloses a valve port (112).

8. The electric valve device according to claim 7, characterized in that: The annular boss portion (115) is provided with a transition slope surface (115a).

9. The electric valve device according to claim 7, characterized in that: The sealing column surface portion (131a) is clearance-matched with the cavity wall of the valve cavity (111) not provided with the annular boss portion (115).

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