Electric stop valve

Abstract

The utility model provides an electric stop valve which comprises a valve seat, a valve core structure, a driving part, a connecting seat and a positioning bearing, a valve port is arranged in the valve seat, the valve core structure is rotatably arranged in the valve seat to open and close the valve port, the driving part comprises a driving shell and a driving output shaft, and the valve seat and the driving shell are respectively connected with the connecting seat. The driving output shaft is connected with the valve element structure and drives the valve element structure to rotate, the driving output shaft or the valve element structure is sleeved with an inner ring of the positioning bearing, and an outer ring of the positioning bearing is in limiting fit with the inner wall of the valve seat and the inner wall of the connecting seat. The positioning bearing plays a role in positioning the driving output shaft or the valve element structure and reducing rotation resistance, due to the fact that the outer ring of the positioning bearing is matched with the inner wall of the valve seat and the inner wall of the connecting seat in a limiting mode, and due to the fact that the precision of the bearing is high, the coaxiality after the valve seat and the connecting seat are connected is improved through the outer ring of the bearing. Therefore, the coaxiality of the driving output shaft and the valve element structure is improved, and the product quality of the electric stop valve is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve technical field, specifically, relate to a kind of electric stop valve. BACKGROUND

[0002] Electric stop valve is applied to air conditioning system and other equipment, moves by driving component to drive valve core structure, to open and close valve port, realizes the on-off of pipeline. In the electric stop valve of relevant technology, in order to reduce the machining difficulty of shell structure, the shell structure is set as split valve seat and connecting seat, and the valve seat is connected with the driving component through the connecting seat. The design of this valve seat and connecting seat split, after connection, coaxiality is not easy to guarantee. SUMMARY

[0003] The utility model provides a kind of electric stop valve, to solve the problem that split valve seat and connecting seat in electric stop valve are not easy to guarantee coaxiality after connection.

[0004] In order to solve the above problems, the utility model provides a kind of electric stop valve, including valve seat, valve core structure, driving component, connecting seat and locating bearing, the valve seat is provided with valve port, and the valve core structure is rotationally arranged in the valve seat to open and close valve port, the driving component includes driving shell and driving output shaft, and the valve seat, driving shell is connected with the connecting seat respectively, and the driving output shaft is connected with the valve core structure and drives the valve core structure to rotate, the inner ring of locating bearing is sleeved on the driving output shaft or valve core structure, and the outer ring of locating bearing is limitedly matched with the inner wall of valve seat and the inner wall of connecting seat.

[0005] Further, the valve seat has a first outer ring matching hole, the connecting seat has a second outer ring matching hole, the diameters of the first outer ring matching hole and the second outer ring matching hole are the same, a part of the outer ring of the locating bearing in the axial direction is located in the first outer ring matching hole, and another part of the outer ring of the locating bearing in the axial direction is located in the second outer ring matching hole.

[0006] Further, the inner wall of the valve seat has a valve body limiting surface, and the valve body limiting surface limits the side of the outer ring of the locating bearing facing the valve port.

[0007] Further, the inner wall of the connecting seat has a connecting limiting surface, and the connecting limiting surface limits the side of the outer ring of the locating bearing away from the valve port.

[0008] Further, the inner ring of the locating bearing is sleeved on the driving output shaft, the outer wall of the driving output shaft has an output shaft limiting surface, and the output shaft limiting surface and the inner ring of the locating bearing are limitedly matched on the side away from the valve port.

[0009] Further, the connecting seat further has a first connecting hole and a third connecting hole, the first connecting hole, the second outer ring matching hole and the third connecting hole are coaxially arranged in sequence, a part of the driving shell is located in the first connecting hole and is limited and matched, and a part of the valve seat is located in the third connecting hole and is limited and matched.

[0010] Further, the driving part further comprises a driving rotor and a planetary reduction assembly, the planetary reduction assembly is matched with the inner wall of the driving shell, the driving rotor is drivingly connected with the planetary reduction assembly, and the planetary reduction assembly is connected with the driving output shaft and drives the driving output shaft to rotate.

[0011] Further, one end of the valve seat is located in the connecting seat, the connecting seat has a connecting stepped surface, and the connecting stepped surface and the end surface of the valve seat are abutted.

[0012] Further, the connecting seat has an internal thread, the valve seat has an external thread, the connecting seat and the valve seat are threadedly connected, and the inner wall of the connecting seat and the outer wall of the valve seat are sealingly matched.

[0013] Further, the inner wall of the connecting seat and the outer wall of the driving shell are sealingly matched.

[0014] Further, the electric shut-off valve further comprises a pre-tightening nut, the connecting seat has an internal thread, the pre-tightening nut has an external thread, the connecting seat and the pre-tightening nut are threadedly connected, and the pre-tightening nut is sleeved on the driving shell and is limited and matched with the driving shell.

[0015] Further, the valve seat has a valve body sealing block, the valve body sealing block forms a valve port at a circumferential gap, the valve core structure comprises a valve core main body, a connecting rod and a valve core sealing block connected in sequence, the end surface of the valve core sealing block is abutted with the end surface of the valve body sealing block, the valve core sealing block has a solid structure and an avoiding gap in the circumferential direction, and the driving output shaft drives the valve core main body to rotate; wherein the valve port is closed when the solid structure of the valve core sealing block corresponds to the valve port, and the valve port is opened when the avoiding gap of the valve core sealing block corresponds to the valve port.

[0016] In the scheme, the valve seat is provided with a valve core structure, the valve core structure is driven to rotate by the driving output shaft of the driving part, so as to open and close the valve port. The valve seat is connected with the driving shell of the driving part through the connecting seat, the connecting seat and the valve seat are arranged as a split structure, and the machining difficulty is reduced. The positioning bearing plays a role in positioning the driving output shaft or the valve core structure and reducing the rotation resistance. Since the outer ring of the positioning bearing is limited and matched with the inner wall of the valve seat and the inner wall of the connecting seat, and the bearing has high precision, the coaxiality of the valve seat and the connecting seat after being connected is improved through the outer ring of the bearing, so as to improve the coaxiality of the driving output shaft and the valve core structure, and the product quality of the electric shut-off valve is improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] The drawings constituting a part of the specification of the application are used to provide further understanding of the present application, the schematic embodiments of the present application and the description thereof are used to explain the present application, and do not constitute improper limitation on the present application. In the drawings:

[0018] Figure 1 A structure schematic view of the electric stop valve provided by the embodiment of the present application is shown;

[0019] Figure 2 A schematic view of the valve seat in Figure 1 is shown;

[0020] Figure 3 A schematic view of the connecting seat in Figure 1 is shown;

[0021] Figure 4 A sectional view of the connecting seat in Figure 3 is shown.

[0022] Among them, the above drawings include the following reference signs:

[0023] 150, positioning bearing;

[0024] 202, valve port; 210, valve seat; 211, valve body limiting surface; 214, first outer ring matching hole; 230, valve body sealing block;

[0025] 300, valve core structure; 310, valve core main body; 320, connecting rod; 330, valve core sealing block;

[0026] 400, driving component; 410, driving output shaft; 420, driving rotor; 430, planetary reduction assembly; 412, output shaft limiting surface; 440, driving shell;

[0027] 500, connecting seat; 502, second outer ring matching hole; 503, connecting limiting surface; 504, connecting step surface; 531, first connecting hole; 542, third connecting hole;

[0028] 610, pre-tightening nut. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. The description of the at least one exemplary embodiment is actually only illustrative, and by no means constitutes any limitation on the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts fall within the scope of protection of the present application.

[0030] As Figures 1 to 4 shown, the utility model discloses an electric stop valve, including valve seat 210, valve core structure 300, drive component 400, connecting seat 500 and locating bearing 150, be provided with valve port 202 in valve seat 210, valve core structure 300 rotation is arranged in valve seat 210 to open and close valve port 202, drive component 400 includes drive housing 440 and drive output shaft 410, valve seat 210, drive housing 440 is connected with connecting seat 500 respectively, drive output shaft 410 is connected with valve core structure 300 and drives valve core structure 300 to rotate, the inner ring of locating bearing 150 is sleeved in drive output shaft 410 or valve core structure 300, the outer ring of locating bearing 150 is all limitedly matched with the inner wall of valve seat 210, the inner wall of connecting seat 500.

[0031] In the scheme, valve seat 210 is provided with valve core structure 300, and valve core structure 300 is driven to rotate by the drive output shaft 410 of drive component 400, to open and close valve port 202. Valve seat 210 is connected with the drive housing 440 of drive component 400 through connecting seat 500, and connecting seat 500 and valve seat 210 are arranged as a split structure, reducing the processing difficulty. Among them, locating bearing 150 plays a role of positioning and reducing the rotating resistance to drive output shaft 410 or valve core structure 300, since the outer ring of locating bearing 150 is limitedly matched with the inner wall of valve seat 210 and the inner wall of connecting seat 500, and since the bearing precision is high, the coaxiality after valve seat 210 and connecting seat 500 are connected is improved through the outer ring of the bearing, thereby facilitating to improve the coaxiality of drive output shaft 410 and valve core structure 300, and improving the product quality of the electric stop valve.

[0032] As Figure 2 shown, valve seat 210 has a first outer ring matching hole 214, connecting seat 500 has a second outer ring matching hole 502, the diameters of the first outer ring matching hole 214 and the second outer ring matching hole 502 are the same, a part of the outer ring of locating bearing 150 in the axial direction is located in the first outer ring matching hole 214, and another part of the outer ring of locating bearing 150 in the axial direction is located in the second outer ring matching hole 502.

[0033] Through the above setting, after locating bearing 150 is matched with the first outer ring matching hole 214 and the second outer ring matching hole 502, the first outer ring matching hole 214 and the second outer ring matching hole 502 realize coaxiality through the limiting effect of locating bearing 150, thereby improving the coaxiality of drive output shaft 410 and valve core structure 300.

[0034] As Figure 2As shown, the inner wall of the valve seat 210 has a valve body limiting surface 211, which limits the outer ring of the positioning bearing 150 towards the valve port 202. The valve body limiting surface 211 achieves the positioning of the outer ring of the positioning bearing 150 towards the valve port 202, preventing the outer ring of the positioning bearing 150 from moving in the direction towards the valve port 202.

[0035] like Figure 4 As shown, the inner wall of the connecting seat 500 has a connecting limiting surface 503, which limits the outer ring of the positioning bearing 150 away from the valve port 202. The connecting limiting surface 503 achieves the positioning of the outer ring of the positioning bearing 150 away from the valve port 202, preventing the outer ring of the positioning bearing 150 from moving away from the valve port 202.

[0036] Specifically, the inner ring of the positioning bearing 150 is sleeved on the drive output shaft 410, and the outer wall of the drive output shaft 410 has an output shaft limiting surface 412. The output shaft limiting surface 412 and the inner ring of the positioning bearing 150 are limited and fitted on the side away from the valve port 202.

[0037] The positioning bearing 150 provides radial positioning for the drive output shaft 410 and ensures the coaxiality of the drive output shaft 410, valve seat 210, and connecting seat 500. Since the valve core structure 300 is installed inside the valve seat 210, the coaxiality of the valve core structure 300 and the drive output shaft 410 is further guaranteed, preventing significant shaking during rotation and ensuring reliable transmission.

[0038] like Figure 4 As shown, the connector 500 also has a first connector hole 531 and a third connector hole 542. The first connector hole 531, the second outer ring mating hole 502 and the third connector hole 542 are connected in sequence and coaxially arranged. A part of the drive housing 440 is located in the first connector hole 531 and is limited to fit. A part of the valve seat 210 is located in the third connector hole 542 and is limited to fit.

[0039] The above configuration ensures that the valve seat 210 and the connecting seat 500 are coaxial, and that the drive housing 440 and the connecting seat 500 are also coaxial, thus achieving coaxiality between the valve seat 210 and the drive housing 440. This improves the coaxiality between the valve core structure 300 installed in the valve seat 210 and the drive output shaft that mates with the drive housing 440, ensuring the stability of the transmission.

[0040] Further, the driving component 400 further comprises a driving rotor 420 and a planetary reduction assembly 430, the planetary reduction assembly 430 is matched with the inner wall of the driving housing 440, the driving rotor 420 and the planetary reduction assembly 430 are drivingly connected, and the planetary reduction assembly 430 is connected with the driving output shaft 410 and drives the driving output shaft 410 to rotate.

[0041] In the present scheme, the planetary reduction assembly 430 is adopted, which can realize the speed reduction of the driving rotor 420 and increase the output torque in a compact space, so that there is enough torque to drive the driving output shaft 410 and the valve core structure 300 to rotate, and the valve core structure 300 will not rotate too fast, and the rotation angle is easy to control. The above structure makes the electric shut-off valve structure compact and occupies small space.

[0042] Further, since the planetary reduction assembly 430 is matched with the inner wall of the driving housing 440, the output end of the planetary reduction assembly 430 and the driving output shaft 410 are both in high coaxiality with the driving housing 440, and further in high coaxiality with the connecting seat 500, the valve seat 210 and the valve core structure 300.

[0043] As shown in Figure 1 and Figure 4 , one end of the valve seat 210 is located in the connecting seat 500, the connecting seat 500 has a connecting stepped surface 504, and the connecting stepped surface 504 and the end surface of the valve seat 210 are in abutment. Through the cooperation of the connecting stepped surface 504 and the end surface of the valve seat 210, the axial limiting of the valve seat 210 and the connecting seat 500 is realized, and there is no gap between them, which is beneficial to the assembly of the positioning bearing 150.

[0044] Further, the connecting seat 500 has an internal thread, the valve seat 210 has an external thread, the connecting seat 500 and the valve seat 210 are threadedly connected, and the threaded connection is convenient to disassemble and assemble. The inner wall of the connecting seat 500 and the outer wall of the valve seat 210 are sealingly matched, so as to avoid leakage at the threaded connection position and ensure the sealing performance and long-term use reliability of the electric shut-off valve.

[0045] Further, the inner wall of the connecting seat 500 and the outer wall of the driving housing 440 are sealingly matched. In this way, leakage of the electric shut-off valve between the inner wall of the connecting seat 500 and the outer wall of the driving housing 440 is avoided. Specifically, one or more sealing rings can be arranged between the inner wall of the connecting seat 500 and the outer wall of the driving housing 440.

[0046] As shown in Figure 1 , the electric shut-off valve further comprises a pre-tightening nut 610, the connecting seat 500 has an internal thread, the pre-tightening nut 610 has an external thread, the connecting seat 500 and the pre-tightening nut 610 are threadedly connected, and the pre-tightening nut 610 is sleeved on the driving housing 440 and is in limiting cooperation with the driving housing 440.

[0047] After the pre-tightening nut 610 is installed, the pre-tightening nut 610 is fixedly connected with the connecting seat 500, and the pre-tightening nut 610 limits the driving shell 440, thereby defining the relative position of the driving shell 440 and the connecting seat 500, and achieving the installation of the driving shell 440.

[0048] Further, the valve body sealing block 230 is arranged in the valve seat 210, the valve body sealing block 230 forms the valve port 202 through a circumferential gap, the valve core structure 300 comprises a valve core main body 310, a connecting rod 320 and a valve core sealing block 330 connected in sequence, the end surface of the valve core sealing block 330 abuts against the end surface of the valve body sealing block 230, the valve core sealing block 330 has a solid structure and an avoiding gap in the circumferential direction, and the driving output shaft 410 drives the valve core main body 310 to rotate; wherein the valve port 202 is closed when the solid structure of the valve core sealing block 330 corresponds to the valve port 202, and the valve port 202 is opened when the avoiding gap of the valve core sealing block 330 corresponds to the valve port 202.

[0049] With the above arrangement, the valve core sealing block 330 is driven to rotate through the rotation of the valve core main body 310 and the connecting rod 320, thereby changing the circumferential position of the solid structure and the avoiding gap of the valve core sealing block 330, the valve port 202 is closed when the solid structure of the valve core sealing block 330 corresponds to the valve port 202, and the valve port 202 is disconnected from the cavity of the valve seat 210; the valve port 202 is connected with the avoiding gap when the avoiding gap of the valve core sealing block 330 corresponds to the valve port 202, and the valve port 202 is connected with the cavity of the valve seat 210.

[0050] The above only describes optional embodiments of the present application and is not intended to limit the present application. The present application can have various modifications and changes for those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

[0051] It should be noted that the terms used herein are only intended to describe specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise, and it should be understood that when the term "comprising" and / or "including" is used in the specification, it means that the features, steps, operations, devices, components and / or their combinations are present.

[0052] The foregoing is considered as illustrative only of the principles of the application. Further, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the application to the exact construction and operation described. Accordingly, all such variations are intended to be included within the scope of the present application as defined in the claims. The application is also not limited to the details of the foregoing embodiment.

[0053] In the description of the present application, it is to be understood that the orientation or positional relationships indicated by terms such as "front", "back", "up", "down", "left", "right", "lateral", "vertical", "horizontal", "top", "bottom", and the like are generally based on the orientation or positional relationships shown in the drawings, and are merely intended to facilitate the description and simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore cannot be construed as limiting the scope of protection of the present application. The orientation terms "inner", "outer" refer to the inner and outer relative to the contour of the components themselves.

[0054] For the convenience of description, spatial relative terms such as "over", "above", "upper surface", "upper", and the like can be used herein to describe the spatial positional relationship of one device or feature with respect to other devices or features as shown in the drawings. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the devices described in the drawings. For example, if the devices in the drawings are inverted, the device described as "above" or "over" other devices or structures will be positioned "below" or "under" the other devices or structures. Thus, the exemplary term "above" can include both "above" and "below" orientations. The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein are interpreted accordingly.

[0055] In addition, it should be noted that the use of the terms "first", "second", and the like do not have a special meaning, and therefore cannot be construed as limiting the scope of protection of the present application, unless otherwise stated.

Claims

1. An electric shut-off valve, characterized in that The valve seat (210) is provided with a valve port (202), the valve core structure (300) is rotationally arranged in the valve seat (210) to open and close the valve port (202), the driving component (400) comprises a driving housing (440) and a driving output shaft (410), the valve seat (210) and the driving housing (440) are connected with the connecting seat (500) respectively, the driving output shaft (410) is connected with the valve core structure (300) and drives the valve core structure (300) to rotate, and the inner ring of the locating bearing (150) is sleeved on the driving output shaft (410) or the valve core structure (300), and the outer ring of the locating bearing (150) is limitedly matched with the inner wall of the valve seat (210) and the inner wall of the connecting seat (500).

2. Motor-operated stop valve according to claim 1, characterized in that The valve seat (210) has a first outer ring matching hole (214), the connecting seat (500) has a second outer ring matching hole (502), the diameters of the first outer ring matching hole (214) and the second outer ring matching hole (502) are the same, and the outer ring of the locating bearing (150) is located on the first outer ring matching hole (214) and the second outer ring matching hole (502) in an axial direction.

3. The motor-operated globe valve of claim 1, wherein The inner wall of the valve seat (210) has a valve body limiting surface (211), the valve body limiting surface (211) limits the side of the outer ring of the locating bearing (150) facing the valve port (202).

4. The motor-operated globe valve of claim 1, wherein The inner wall of the connecting seat (500) has a connecting limiting surface (503), the connecting limiting surface (503) limits the side of the outer ring of the locating bearing (150) away from the valve port (202).

5. The motor-operated globe valve of claim 1, wherein The inner ring of the locating bearing (150) is sleeved on the driving output shaft (410), the outer wall of the driving output shaft (410) has an output shaft limiting surface (412), and the output shaft limiting surface (412) and the inner ring of the locating bearing (150) are limitedly matched on the side away from the valve port (202).

6. The motor-operated globe valve of claim 2, wherein The connecting seat (500) further has a first connecting hole (531) and a third connecting hole (542), the first connecting hole (531), the second outer ring matching hole (502) and the third connecting hole (542) are coaxially arranged in sequence, a part of the driving housing (440) is located in the first connecting hole (531) and is limitedly matched, and a part of the valve seat (210) is located in the third connecting hole (542) and is limitedly matched.

7. Motor-operated stop valve according to claim 6, characterized in that The driving component (400) further comprises a driving rotor (420) and a planetary reduction assembly (430), the planetary reduction assembly (430) is matched with the inner wall of the driving housing (440), the driving rotor (420) and the planetary reduction assembly (430) are drivingly connected, and the planetary reduction assembly (430) is connected with the driving output shaft (410) and drives the driving output shaft (410) to rotate.

8. The motor-operated globe valve of claim 1, wherein One end of the valve seat (210) is located in the connecting seat (500), and the connecting seat (500) has a connecting stepped surface (504) which abuts against the end surface of the valve seat (210).

9. The motor-operated globe valve of claim 1, wherein The connecting seat (500) has an internal thread, the valve seat (210) has an external thread, the connecting seat (500) and the valve seat (210) are threadedly connected, and the inner wall of the connecting seat (500) and the outer wall of the valve seat (210) are sealingly matched.

10. The motor-operated globe valve of claim 1, wherein The inner wall of the connecting seat (500) and the outer wall of the driving housing (440) are sealingly matched.

11. The motor-operated stop valve according to claim 1, wherein The electric shut-off valve further comprises a pre-tightening nut (610), the connecting seat (500) has an internal thread, the pre-tightening nut (610) has an external thread, the connecting seat (500) and the pre-tightening nut (610) are threadedly connected, and the pre-tightening nut (610) is sleeved on the driving housing (440) and is limitingly matched with the driving housing (440).

12. The motor-operated stop valve according to claim 1, wherein The valve seat (210) has a valve body sealing block (230) therein, the valve port (202) is formed by a circumferential notch of the valve body sealing block (230), the valve core structure (300) comprises a valve core main body (310), a connecting rod (320) and a valve core sealing block (330) which are sequentially connected, the end surface of the valve core sealing block (330) abuts against the end surface of the valve body sealing block (230), the valve core sealing block (330) has a solid structure and an avoiding notch in the circumferential direction, and the driving output shaft (410) drives the valve core main body (310) to rotate; wherein the valve port (202) is closed when the solid structure of the valve core sealing block (330) corresponds to the valve port (202), and the valve port (202) is opened when the avoiding notch of the valve core sealing block (330) corresponds to the valve port (202).

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