Motorized valve

Abstract

The application relates to an electric valve, which comprises a valve body, a cavity formed in the valve body, a first pipe hole and a second pipe hole arranged on the valve body, a valve port arranged in the cavity and communicated with a pipe in the second pipe hole, a valve core arranged in the cavity and rotationally connected with the valve body through a mounting shaft, a flow channel of the valve core communicated with the pipe in the first pipe hole, the flow channel having a first opening facing the valve port, a driving mechanism comprising a driver and a transmission assembly, at least part of the driver being arranged outside the valve body and fixedly connected with the valve body, a driving shaft of the driver being at an angle with the mounting shaft and drivingly connected with the valve core through the transmission assembly, the valve core being driven to rotate around the axis of the mounting shaft, so that the first opening is in an open valve position communicated with the valve port or in a closed valve position not communicated with the valve port. More mounting space is reserved for the driver, the installation of the driver is facilitated, and the overall length of the electric valve is reduced.

Description

Technical Field

[0001] This application relates to the technical field of valves, and in particular to an electric valve. Background Technology

[0002] Existing electric valves typically include a valve body, a drive mechanism, and a valve core housed in the valve body cavity. The valve core rotates under the drive mechanism, thereby connecting or disconnecting the pipeline, thus changing the direction of fluid flow or the fluid flow rate.

[0003] However, in current electric valves, the actuator and valve body in the drive mechanism are arranged sequentially along the length of the valve body. This increases the overall length of the electric valve, and the installation space for the actuator is limited, making the installation of the actuator more difficult. Utility Model Content

[0004] Therefore, it is necessary to provide an electric valve that increases installation space.

[0005] This application provides an electric valve, including a valve body with a cavity formed inside. The valve body has a first connecting pipe hole and a second connecting pipe hole. The cavity has a valve port communicating with the connecting pipe in the second connecting pipe hole. A valve core is disposed in the cavity and located between the valve port and the first connecting pipe hole. The valve core is rotatably connected to the valve body via a mounting shaft. The valve core has a flow channel communicating with the connecting pipe in the first connecting pipe hole. The flow channel has a first opening facing the valve port. A drive mechanism includes a driver and a transmission assembly. At least part of the driver is located outside the valve body and is fixedly connected to the valve body. The drive shaft of the driver is at an angle to the mounting shaft and is drivenly connected to the valve core via the transmission assembly to drive the valve core to rotate around the axis of the mounting shaft, thereby placing the first opening in an open position communicating with the valve port, or placing the first opening in a closed position not communicating with the valve port.

[0006] In one embodiment, the drive shaft is perpendicular or substantially perpendicular to the mounting shaft.

[0007] In one embodiment, the transmission assembly is located within the cavity and includes a gear and a transmission part for driving the gear to rotate about the axis of the mounting shaft. The gear is sleeved on the outer peripheral wall of the valve core and is fixedly connected to the valve core. At least a portion of the drive shaft is located within the cavity, and the transmission part is disposed on the drive shaft and engages with the gear in a transmission cooperation.

[0008] In one embodiment, the transmission part is a threaded part formed on the outer peripheral wall of the drive shaft.

[0009] In one embodiment, the actuator is a motor, which includes a rotor that is welded to the drive shaft. In another embodiment, the actuator includes a connecting seat with a through-channel for the drive shaft to pass through, and the connecting seat is welded to the outer wall of the valve body. Thus, the actuator is fixedly connected to the outer wall of the valve body by welding.

[0010] In one embodiment, the valve body includes a valve seat and a cover connected in sequence. A first connecting pipe hole is provided on the valve seat, and a second connecting pipe hole is provided on the cover. The cavity includes a valve cavity located in the valve seat and a valve chamber located in the cover. The valve port is located in the valve chamber. The valve cavity includes a first cavity and a second cavity located beside the first cavity. The second cavity is connected to the first cavity. The valve core is located in the first cavity, and at least a portion of the drive shaft is located in the second cavity. The connecting seat is welded and fixed to the valve seat at the position corresponding to the second cavity.

[0011] In one embodiment, the cover is provided with a covering part located next to the valve port. When the first opening is in the valve closed position, the first opening is arranged opposite to the covering part and is blocked by the covering part. The side wall of the covering part facing the first pipe hole is defined as the first side wall. The first side wall and the valve port are located on the rotation path of the first opening.

[0012] In one embodiment, the drive shaft is fitted with at least two bearings, which are spaced apart axially along the drive shaft and are respectively located in the connecting seat and the valve body. In one embodiment, a gasket is fixed in the through channel, which abuts against the corresponding bearing and limits the axial movement of the bearing.

[0013] In one embodiment, there is one first pipe hole and one second pipe hole, and the first pipe hole and the second pipe hole are coaxially arranged.

[0014] Compared with the prior art, in the electric valve provided in this application, the drive mechanism drives the valve core to rotate to switch the first opening between the open and closed positions, and the drive shaft of the actuator is at an angle to the mounting shaft. At this time, the actuator is located on the side of the valve body, which provides more installation space for the actuator and facilitates the installation of the actuator. In addition, it reduces the overall length of the electric valve. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a perspective view of a valve device according to an embodiment of this application;

[0017] Figure 2 for Figure 1 A cross-sectional view of the first opening in the closed valve position;

[0018] Figure 3 for Figure 2 A magnified view of a section at point I;

[0019] Figure 4 for Figure 1 A cross-sectional view of the first opening in the valve open position;

[0020] Figure 5 This is a schematic diagram of the valve cover structure according to an embodiment of this application;

[0021] Figure 6 for Figure 5 A sectional view;

[0022] Figure 7 for Figure 2 A cross-sectional view along the AA direction.

[0023] Reference numerals: 1. Valve body; 10. Cavity; 11. Valve seat; 110. Valve cavity; 1101. First cavity; 1102. Second cavity; 111. First connecting hole; 12. Cover; 120. Valve chamber; 121. Second connecting hole; 122. Valve port; 123. First part; 1231. Extension; 124. Second part; 13. Cover; 131. First sidewall; 14. Valve cover; 2. Valve core ; 21, flow channel; 210, first opening; 3, mounting shaft; 4, drive mechanism; 41, driver; 41a, housing; 410, connecting seat; 4101, through channel; 411, drive shaft; 4111, threaded part; 4112, limiting step; 4113, stepped part; 4114, gasket; 412, rotor; 42, transmission assembly; 421, gear; 61, first bearing; 62, second bearing. Detailed Implementation

[0024] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0025] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," "side," "top," "bottom," and similar expressions used in this application's specification are merely for describing various exemplary structural parts and elements of this application. However, their use herein is for illustrative purposes only and is determined based on the exemplary orientations shown in the accompanying drawings, and does not represent the only possible implementation. Since the embodiments disclosed in this application can be arranged in different orientations, these terms indicating orientation are for illustrative purposes only and should not be considered as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0027] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0028] It should be noted that "axial arrangement" means that the overall arrangement direction is along the axial direction, including but not limited to axial extension, and may be at an angle to the axial direction.

[0029] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used in this application includes any and all combinations of one or more of the associated listed items.

[0030] like Figures 1-7 As shown, this application discloses an electric valve. The electric valve includes a valve body 1, a valve core 2, and a drive mechanism 4. The valve body 1 has a cavity 10 formed inside, and the valve body 1 has a first connecting hole 111 and a second connecting hole 121. The cavity 10 has a valve port 122 that communicates with the connecting pipe in the second connecting hole 121. In this embodiment, the valve port 122 is located between the first connecting hole 111 and the second connecting hole 121.

[0031] like Figures 2-4 As shown, the valve core 2 is disposed in the cavity 10 and located between the valve port 122 and the first connecting pipe hole 111. The valve core 2 is rotatably connected to the valve body 1 through the mounting shaft 3. The valve core 2 is provided with a flow channel 21 that communicates with the connecting pipe in the first connecting pipe hole 111. The flow channel 21 has a first opening 210 facing the valve port 122.

[0032] In this embodiment, both the first opening 210 and the valve port 122 are semi-circular holes.

[0033] Specifically, such as Figures 2-4 As shown, the valve body 1 is provided with a cover portion 13 located beside the valve port 122. When the first opening 210 is in the closed position, the first opening 210 and the cover portion 13 are arranged opposite to each other and are blocked by the cover portion 13. The side wall of the cover portion 13 facing the valve core 2 is defined as the first side wall 131. The first side wall 131 and the valve port 122 are located on the rotation path of the first opening 210. When the first opening 210 is in the closed position, the first side wall 131 covers the first opening 210.

[0034] Understandably, by using the combination of valve port 122 and cover part 13, the connecting pipe in the first connecting pipe hole 111 and the connecting pipe in the second connecting pipe hole 121 can be connected to valve port 122 through flow channel 21. The valve device achieves its closing purpose by blocking the first opening 210 of flow channel 21 with cover part 13, making the valve opening and closing more reliable. Furthermore, when the valve is open, valve core 2 does not occupy the space of valve port 122, nor does it additionally occupy the radial dimension of the valve body, resulting in better flow capacity. In addition, the space of valve port 122 can be utilized to the maximum extent, resulting in a higher flow capacity than on / off valves (such as gate valves, solenoid valves, and expansion valves) using valve bodies of the same outer diameter.

[0035] like Figure 1, Figure 2 and Figure 4 As shown, there is one first connecting port 111 and one second connecting port 121, and the first connecting port 111 and the second connecting port 121 are coaxially arranged. The axis of the valve port 122 is parallel to the axis of the second connecting port 121. Thus, the electric valve is a two-way valve. It allows for straight flow of fluid, reduces the resistance encountered by the fluid during flow, and improves the flow capacity.

[0036] In this embodiment, such as Figures 1-4 As shown, the valve body 1 includes a valve seat 11 and a cover 12 connected in sequence. A first connecting pipe hole 111 is provided on the valve seat 11, and a second connecting pipe hole 121 is provided on the cover 12. The cavity 10 includes a valve cavity 110 located in the valve seat 11 and a valve chamber 120 located in the cover 12. A valve port 122 is provided in the valve chamber 120.

[0037] Furthermore, the inner peripheral wall of the cover 12 includes a first part 123 and a second part 124 connected sequentially along its circumference. The first part 123 extends toward the second part 124 to form an extension 1231. A gap is left between the extension 1231 and the second part 124 to form a valve port 122. The cover 13 includes at least the extension 1231 and together with the cover 12 forms a valve cover 14.

[0038] In other embodiments, the covering portion 13 may include only the extension portion 1231. In this embodiment, the covering portion 13 includes not only the extension portion 1231, but also a region on the cover 12 corresponding to the first portion 123. For example... Figure 2 and Figure 7 As shown, the drive mechanism 4 includes a driver 41 and a transmission assembly 42. At least part of the driver 41 is located outside the valve body 1 and is fixedly connected to the valve body 1. The drive shaft 411 of the driver 41 is at an angle to the mounting shaft 3 and is driven and connected to the valve core 2 through the transmission assembly 42 to drive the valve core 2 to rotate around the axis of the mounting shaft 3, thereby placing the first opening 210 in the open position communicating with the valve port 122, or placing the first opening 210 in the closed position not communicating with the valve port 122.

[0039] It is understandable that the drive mechanism 4 drives the valve core 2 to rotate so as to switch the first opening 210 between the open and closed positions. The drive shaft 411 of the driver 41 is at an angle to the mounting shaft 3. At this time, the driver 41 is located on the side of the valve body 1, thus reserving more installation space for the driver 41 and facilitating its installation.

[0040] In another embodiment, the drive shaft 411 and the mounting shaft 3 are not at a right angle to each other. In this embodiment, the drive shaft 411 and the mounting shaft 3 are perpendicular or substantially perpendicular.

[0041] Furthermore, the aforementioned mounting shaft 3 is located beside the first opening 210 and is coaxially arranged with the first connecting pipe hole 111 and the second connecting pipe hole 121. This avoids occupying space within the flow channel 21 while ensuring more reliable straight-line fluid flow and better flow capacity. In this embodiment, as... Figure 7 As shown, the transmission assembly 42 is located within the cavity 10 and includes a gear 421 and a transmission part for driving the gear 421 to rotate around the axis of the mounting shaft 3. The gear 421 is sleeved on the outer peripheral wall of the valve core 2 and is fixedly connected to the valve core 2. At least a portion of the drive shaft 411 is located within the cavity 10, and the transmission part is disposed on the drive shaft 411 and is in transmission cooperation with the gear 421. Thus, when the driver 41 is working, the drive shaft 411 drives the gear 421 to rotate. Since the gear 421 is fixedly connected to the outer peripheral wall of the valve core 2, it drives the valve core 2 to rotate.

[0042] In other embodiments, the transmission part may be a gear assembly. In this embodiment, the transmission part is a threaded portion 4111 formed on the outer peripheral wall of the drive shaft 411, and the threaded portion 4111 engages with the gear 421 for transmission.

[0043] If the driver 41 is a motor, then the drive shaft 411 of the motor is perpendicular or substantially perpendicular to the mounting shaft 3. Therefore, sufficient space is reserved for the motor coil to facilitate coil installation and avoid interference between the coil and the valve body 1.

[0044] It should be noted that "basically perpendicular" means "close to perpendicular, that is, the angle between them is close to 90°".

[0045] The aforementioned motor includes a rotor 412, which is connected to the drive shaft 411 by welding. This increases the connection strength and reliability between the rotor 412 and the drive shaft 411.

[0046] Furthermore, the actuator 41 is fixedly connected to the outer wall of the valve body 1 by welding. This avoids the risk of fastener loosening that can occur with fastener connections, increases the strength and reliability of the connection between the actuator 41 and the valve body 1, and reduces processing costs.

[0047] In this embodiment, such as Figure 7 As shown, the valve chamber 110 includes a first cavity 1101 and a second cavity 1102 located beside the first cavity 1101. The second cavity 1102 is connected to the first cavity 1101, and the valve core 2 is located in the first cavity 1101. At least a portion of the drive shaft 411 is located in the second cavity 1102.

[0048] Specifically, such as Figure 7As shown, the actuator 41 also includes a housing 41a, with the rotor 412 located inside the housing 41a. The housing 41a includes a connecting seat 410, which has a through channel 4101 through which the drive shaft 411 passes. The connecting seat 410 is welded and fixed to the outer wall of the valve body 1. Specifically, the connecting seat 410 is welded and fixed to the valve seat 11 at the position corresponding to the second cavity 1102. Because the connecting seat 410 is welded and fixed to the valve seat 11, the gap between the contact surfaces of the connecting seat 410 and the valve seat 11 is reduced. Vibration energy can be absorbed through the connecting seat 410, noise can be reduced, and sealing performance can be increased.

[0049] The drive shaft 411 is fitted with at least two bearings, which are spaced apart along the axial direction of the drive shaft 411. It is understood that the arrangement of at least two bearings on the drive shaft 411 improves the concentricity of the drive shaft 411's rotation, while reducing the friction and increasing transmission efficiency. The at least two bearings are located respectively within the connecting seat 410 and the valve body 1. This separate arrangement facilitates the installation and positioning of the bearings when both are of the same specification; otherwise, it would be difficult to install and position two bearings of the same specification within the valve body.

[0050] Furthermore, at least one bearing is located within the through channel 4101 of the connecting seat 410, and at least one bearing is located within the cavity 10 of the valve body 1. The bearing located within the through channel 4101 is defined as the first bearing 61. A gasket 4114 is fixed within the through channel 4101, abutting against the first bearing 61 and limiting its axial movement. A limiting step 4112 is located on the outer peripheral wall of the drive shaft 411, with the first bearing 61 positioned between the gasket 4114 and the limiting step 4112. Thus, the axial limitation of the first bearing 61 is achieved through the limiting step 4112 and the gasket 4114.

[0051] The gasket 4114 is fixedly connected to the inner circumferential wall of the valve body 1 by welding or riveting. The gasket 4114 and the valve body 1 are separate parts, which facilitates processing and installation.

[0052] The bearing located within the cavity 10 is defined as the second bearing 62. Specifically, the second cavity 1102 extends axially along the drive shaft 411, and the second bearing 62 is located within the second cavity 1102. A stepped portion 4113 is also formed on the drive shaft 411. The end wall of the second cavity 1102 away from the first bearing 61 is the first end wall, and the second bearing 62 is located between the stepped portion 4113 and the first end wall. In this way, the axial positioning of the second bearing 62 is achieved. It should be noted that the aforementioned positioning step 4112 and stepped portion 4113 can be protrusions on the outer peripheral wall of the drive shaft 411, or they can be end walls of grooves, that is, the drive shaft 411 is recessed inward at the position corresponding to the bearing to form a groove.

[0053] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0054] The above embodiments merely illustrate several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the patent protection scope of this application should be determined by the appended claims.

Claims

1. An electric valve, characterized in that, include: The valve body (1) has a cavity (10) inside. The valve body (1) is provided with a first connecting pipe hole (111) and a second connecting pipe hole (121). The cavity (10) is provided with a valve port (122) that communicates with the connecting pipe in the second connecting pipe hole (121). A valve core (2) is disposed in the cavity (10) and located between the valve port (122) and the first connecting pipe hole (111). The valve core (2) is rotatably connected to the valve body (1) via a mounting shaft (3). The valve core (2) is provided with a flow channel (21) communicating with the connecting pipe in the first connecting pipe hole (111). The flow channel (21) has a first opening (210) facing the valve port (122). The drive mechanism (4) includes a driver (41) and a transmission assembly (42). At least part of the driver (41) is located outside the valve body (1) and is fixedly connected to the valve body (1). The drive shaft (411) of the driver (41) is at an angle to the mounting shaft (3) and is driven to the valve core (2) through the transmission assembly (42). The drive shaft (411) drives the valve core (2) to rotate around the axis of the mounting shaft (3), thereby placing the first opening (210) in an open position communicating with the valve port (122), or placing the first opening (210) in a closed position not communicating with the valve port (122).

2. The electric valve according to claim 1, characterized in that, The drive shaft (411) is perpendicular or substantially perpendicular to the mounting shaft (3).

3. The electric valve according to claim 1, characterized in that, The transmission assembly (42) is located inside the cavity (10) and includes a gear (421) and a transmission part for driving the gear (421) to rotate around the axis of the mounting shaft (3). The gear (421) is sleeved on the outer peripheral wall of the valve core (2) and is fixedly connected to the valve core (2). At least part of the drive shaft (411) is located inside the cavity (10). The transmission part is provided on the drive shaft (411) and is in transmission cooperation with the gear (421).

4. The electric valve according to claim 3, characterized in that, The transmission part is a threaded part (4111) formed on the outer peripheral wall of the drive shaft (411).

5. The electric valve according to claim 1, characterized in that, The driver (41) is a motor, which includes a rotor (412) and is connected to the drive shaft (411) by welding.

6. The electric valve according to claim 4, characterized in that, The driver (41) includes a connecting seat (410), which has a through channel (4101) through which the drive shaft (411) passes. The connecting seat (410) is welded and fixed to the outer wall of the valve body (1).

7. The electric valve according to claim 6, characterized in that, The valve body (1) includes a valve seat (11) and a cover (12) connected in sequence. A first connecting hole (111) is provided on the valve seat (11), and a second connecting hole (121) is provided on the cover (12). The cavity (10) includes a valve cavity (110) located in the valve seat (11) and a valve chamber (120) located in the cover (12). The valve port (122) is located in the valve chamber (120). The valve cavity (110) includes a first connecting hole (121). The first cavity (1101) and the second cavity (1102) located next to the first cavity (1101) are connected to each other. The valve core (2) is located in the first cavity (1101), and at least part of the drive shaft (411) is located in the second cavity (1102). The connecting seat (410) is welded and fixed to the valve seat (11) at the position corresponding to the second cavity (1102).

8. The electric valve according to claim 7, characterized in that, The cover (12) is provided with a cover (13) located next to the valve port (122). When the first opening (210) is in the closed position, the first opening (210) is arranged opposite to the cover (13) and is blocked by the cover (13). The side wall of the cover (13) facing the first pipe hole (111) is defined as the first side wall (131). The first side wall (131) and the valve port (122) are located on the rotation path of the first opening (210).

9. The electric valve according to claim 6, characterized in that, The drive shaft (411) is fitted with at least two bearings, which are arranged at intervals along the axial direction of the drive shaft (411) and are respectively located in the connecting seat (410) and the valve body (1).

10. The electric valve according to claim 9, characterized in that, A gasket (4114) is fixed inside the through channel (4101). The gasket (4114) abuts against the corresponding bearing and limits the axial movement of the bearing.

11. The electric valve according to any one of claims 1 to 10, characterized in that, There is one first connecting hole (111) and one second connecting hole (121), and the first connecting hole (111) and the second connecting hole (121) are coaxially arranged.

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