Electric stop valve

Abstract

The utility model provides an electric stop valve which comprises a valve body component and a driving component, the valve body component comprises a valve seat and a valve core structure rotatably arranged in the valve seat, a valve port is arranged in the valve seat, the valve core structure opens and closes the valve port through rotation, the driving component comprises a driving shell, the driving shell is welded with the valve seat, and the driving component drives the valve core structure to rotate. According to the scheme, the valve element structure is arranged in the valve seat, the driving component drives the valve element structure to rotate, and therefore opening and closing of the valve port are achieved. According to the scheme, the valve seat in the valve body part and the driving shell in the driving part are directly connected in a welding mode, and compared with the mode that direct connection is conducted through threads or indirect connection is conducted through other shell structures, the direct welding mode is good in sealing performance, the leakage risk is reduced, implementation is easy, and the manufacturing cost is low.

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, and the valve port is controlled by electric drive mode to open and close, to realize the on-off of pipeline.Electric stop valve mainly includes valve body component and drive component two parts, in relevant technology, the shell of valve body component and the shell of drive component are directly connected by thread, or indirectly connected by other shell structure.

[0003] In these connection modes, there is a risk of leakage at the position of shell connection.In order to avoid leakage, special sealing structure needs to be designed at the connection position, resulting in high manufacturing cost. UTILITY MODEL CONTENT

[0004] The utility model provides a kind of electric stop valve to reduce the leakage risk of electric stop valve, and reduce manufacturing cost.

[0005] In order to achieve the above purpose, the utility model provides a kind of electric stop valve, including valve body component and drive component, valve body component includes valve seat and valve core structure rotatingly arranged in valve seat, valve seat is provided with valve port, valve core structure is opened and closed by rotating valve port, drive component includes drive shell, drive shell and valve seat are welded, and drive component drives valve core structure to rotate.

[0006] Further, the outer periphery of the valve seat has an annular matching step, and the annular matching step has a step peripheral surface and a step bottom surface, wherein the inner wall of the drive shell matches the step peripheral surface, and the end surface of the drive shell matches and is welded with the step bottom surface.

[0007] Further, the outer periphery of the drive shell has an annular matching step, and the annular matching step has a step peripheral surface and a step bottom surface, wherein the inner wall of the valve seat matches the step peripheral surface, and the end surface of the valve seat matches and is welded with the step bottom surface.

[0008] Further, the drive component includes a drive output shaft, the drive output shaft drives the valve core structure to rotate, and the valve body component further includes a positioning bearing, the outer ring of the positioning bearing matches the inner wall of the valve seat, and the inner ring of the positioning bearing matches the outer wall of the drive output shaft.

[0009] 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 positioning bearing facing the valve port.

[0010] Further, the outer wall of the drive output shaft has an output shaft limiting surface, and the output shaft limiting surface matches and limits the side of the inner ring of the positioning bearing away from the valve port.

[0011] Further, the valve body component further comprises a pre-tightening sleeve, the pre-tightening sleeve is installed in the valve seat, the pre-tightening sleeve has an assembly hole, two ends of the valve core structure are a rotating end and a sealing end respectively, the rotating end is rotatably matched with the assembly hole, the pre-tightening sleeve and the valve core structure are axially limited and matched, the sealing end opens and closes the valve port through rotation, and the driving component drives the rotating end to rotate.

[0012] Further, the valve body component further comprises a pre-tightening sleeve, the pre-tightening sleeve is installed in the valve seat, the pre-tightening sleeve has an assembly hole, two ends of the valve core structure are a rotating end and a sealing end respectively, the rotating end is rotatably matched with the assembly hole, the pre-tightening sleeve and the valve core structure are axially limited and matched, the sealing end opens and closes the valve port through rotation, and the driving component drives the rotating end to rotate.

[0013] Further, the valve seat has a valve body sealing block, the valve body sealing block forms the valve port through 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, an end surface of the valve core sealing block is in abutment with an end surface of the valve body sealing block, and the valve core sealing block has a solid structure and an avoiding gap in the circumferential direction; 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.

[0014] Further, the driving component further comprises a driving rotor, a planetary reduction assembly and a driving output shaft, the driving rotor and the planetary reduction assembly are drivingly connected, and the planetary reduction assembly drives the valve core structure to rotate through the driving output shaft.

[0015] In the scheme, the valve seat is provided with the valve core structure, and the valve core structure is driven to rotate by the driving component, so that the opening and closing of the valve port are realized. In the scheme, the valve seat in the valve body component and the driving shell in the driving component are directly connected through welding, compared with the direct connection through threads or the indirect connection through other shell structures, the direct welding has good sealing performance, reduces the risk of leakage, and is easy to implement and has low manufacturing cost. BRIEF DESCRIPTION OF DRAWINGS

[0016] The drawings accompanying the specification of this application form a part thereof, serve to provide further understanding of the present application, and together with the specification explain the application. The use of these drawings in explaining the application is in no way intended as a limitation on the full scope of the present application, and the drawings are instead merely utilized to exemplify one or more embodiments of the present application.

[0017] Figure 1 A structure schematic view of an electric shut-off valve provided by an embodiment of the present application is shown in the drawings.

[0018] Figure 2 A structure schematic view of a valve seat in the electric shut-off valve is shown in the drawings. Figure 1

[0019] In the above drawings, the following reference signs are used:

[0020] ​100, valve body component; 150, locating bearing; 160, thrust bearing;

[0021] 202, valve port; 210, valve seat; 211, valve body limiting surface; 213, annular matching step; 220, pre-tightening sleeve; 221, assembly hole; 230, valve body sealing block;

[0022] 300, valve core structure; 301, thrust limiting surface; 310, valve core main body; 320, connecting rod; 330, valve core sealing block;

[0023] 400, drive component; 410, drive output shaft; 412, output shaft limiting surface; 420, drive rotor; 430, planetary reduction assembly; 440, drive housing. DETAILED DESCRIPTION

[0024] 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, but not as 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 creative labor fall within the scope of the present application.

[0025] As shown in the drawings, Figures 1 to 2 The embodiment of the present application provides an electric stop valve, which comprises a valve body component 100 and a drive component 400, the valve body component 100 comprises a valve seat 210 and a valve core structure 300 rotatably arranged in the valve seat 210, the valve seat 210 is provided with a valve port 202, the valve core structure 300 is used for opening and closing the valve port 202 by rotation, and the drive component 400 comprises a drive housing 440, the drive housing 440 is welded with the valve seat 210, and the drive component 400 drives the valve core structure 300 to rotate.

[0026] In the present scheme, the valve core structure 300 is arranged in the valve seat 210, the valve core structure 300 is driven to rotate by the drive component 400, so that the opening and closing of the valve port 202 are realized. In the present scheme, the valve seat 210 in the valve body component 100 and the drive housing 440 in the drive component 400 are directly connected by welding, compared with the direct connection by using threads or the indirect connection by other housing structures, the direct welding has good sealing performance, reduces the risk of leakage, and is easy to realize and has low manufacturing cost.

[0027] As shown in the drawings, Figure 2As shown, the outer periphery of the valve seat 210 has an annular mating step 213, which has a step peripheral surface and a step bottom surface, wherein the inner wall of the drive housing 440 mates with the step peripheral surface, thereby being radially limited, and the end surface of the drive housing 440 mates with the step bottom surface and is welded, thereby achieving reliable connection of the valve seat 210 and the drive housing 440 and achieving sealing at the connection position.

[0028] The inner wall of the drive housing 440 and the step peripheral surface of the annular mating step 213 are in interference fit, which ensures coaxiality of the valve seat 210 and the drive housing 440 after assembly, thereby ensuring high coaxiality of the valve core structure 300 and the drive component 400 installed in the valve seat 210, and ensuring reliability of transmission.

[0029] Alternatively, in an embodiment not shown, the outer periphery of the drive housing 440 has an annular mating step 213, which has a step peripheral surface and a step bottom surface, wherein the inner wall of the valve seat 210 mates with the step peripheral surface, thereby being radially limited, and the end surface of the valve seat 210 mates with the step bottom surface and is welded, thereby achieving reliable connection of the valve seat 210 and the drive housing 440 and achieving sealing at the connection position.

[0030] The inner wall of the valve seat 210 and the step peripheral surface of the annular mating step 213 are in interference fit, which ensures coaxiality of the valve seat 210 and the drive housing 440 after assembly, thereby ensuring high coaxiality of the valve core structure 300 and the drive component 400 installed in the valve seat 210, and ensuring reliability of transmission.

[0031] As shown, Figure 1 The drive component 400 includes a drive output shaft 410 that drives the valve core structure 300 to rotate, and the valve body component 100 further includes a locating bearing 150, the outer ring of which mates with the inner wall of the valve seat 210, and the inner ring of which mates with the outer wall of the drive output shaft 410.

[0032] By arranging the locating bearing 150 between the outer wall of the drive output shaft 410 and the inner wall of the valve seat 210, the drive output shaft 410 is radially positioned, and the coaxiality of the drive output shaft 410 and the valve seat 210 is ensured. Since the valve core structure 300 is installed in the valve seat 210, the coaxiality of the valve core structure 300 and the drive output shaft 410 is further ensured, so that the drive output shaft 410 and the valve core structure 300 do not significantly shake when rotating, and the transmission reliability is ensured.

[0033] As shown, Figure 2As shown, the inner wall of the valve seat 210 has a valve body limiting surface 211, which limits the side of the outer ring of the positioning bearing 150 facing the valve port 202. Through the above cooperation, the axial limiting of the outer ring of the positioning bearing 150 is realized.

[0034] Further, the outer wall of the drive output shaft 410 has an output shaft limiting surface 412, which is in limiting cooperation with the side of the inner ring of the positioning bearing 150 away from the valve port 202. Through the above cooperation, the axial limiting of the inner ring of the positioning bearing 150 is realized, preventing the positioning bearing 150 from moving.

[0035] As shown, Figure 1 The valve body component 100 further includes a pre-tightening sleeve 220, which is installed in the valve seat 210. The pre-tightening sleeve 220 has an assembly hole 221. The two ends of the valve core structure 300 are a rotating end and a sealing end, respectively. The rotating end is in rotatable cooperation with the assembly hole 221. The pre-tightening sleeve 220 and the valve core structure 300 are in axial limiting cooperation. The sealing end drives the rotating end to rotate by rotating the opening and closing valve port 202. The drive component 400 drives the rotating end to rotate.

[0036] By setting the pre-tightening sleeve 220, the radial limiting of the valve core structure 300 is realized, ensuring the coaxiality of the valve core structure 300 and the valve seat 210, thereby further ensuring the coaxiality of the valve core structure 300 and the drive component 400, so that the valve core structure 300 will not shake when rotating. After installing the valve core structure 300, the axial limiting of the valve core structure 300 is realized by installing the pre-tightening sleeve 220, avoiding the internal leakage caused by the valve core structure 300 closing the valve port 202 not tightly due to axial movement.

[0037] Further, the valve body component 100 further includes a thrust bearing 160. The valve core structure 300 has a thrust limiting surface 301. The two ends of the thrust bearing 160 are in limiting cooperation with the thrust limiting surface 301 and the end surface of the pre-tightening sleeve 220, respectively. The pre-tightening sleeve 220 is in threaded connection with the valve seat 210. The pre-tightening sleeve 220 applies a force to the valve core structure 300 towards the valve port 202 through the thrust bearing 160.

[0038] By setting the thrust bearing 160, the pre-tightening sleeve 220 and the valve core structure 300 can be directly contacted to axially limit the valve core structure 300, thereby avoiding the wear caused by the pre-tightening sleeve 220 exerting friction force on the valve core structure 300 when rotating.

[0039] As shown, Figure 1As shown, the valve seat 210 has a valve body sealing block 230, the valve body sealing block 230 forms a valve port 202 at a circumferential gap, the valve core structure 300 includes 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 is in abutment with the end surface of the valve body sealing block 230, and the valve core sealing block 330 has a solid structure and an avoidance gap in the circumferential direction; 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 avoidance gap of the valve core sealing block 330 corresponds to the valve port 202.

[0040] With the above arrangement, the valve core sealing block 330 is rotated by 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 avoidance gap of the valve core sealing block 330, and the valve port 202 is closed when the solid structure of the valve core sealing block 330 corresponds to the valve port 202, so that the valve port 202 is disconnected from the cavity of the valve seat 210; when the avoidance gap of the valve core sealing block 330 corresponds to the valve port 202, the valve port 202 is connected to the avoidance gap, and since the avoidance gap is connected to the cavity of the valve seat 210, the valve port 202 is connected to the cavity of the valve seat 210.

[0041] As shown in the figure, Figure 1 The drive component 400 further includes a drive rotor 420, a planetary reduction assembly 430 and a drive output shaft 410, the drive rotor 420 and the planetary reduction assembly 430 are drivingly connected, and the planetary reduction assembly 430 drives the valve core structure 300 to rotate through the drive output shaft 410.

[0042] In this scheme, the planetary reduction assembly 430 is used, which can realize the speed reduction of the drive rotor 420 in a compact space and increase the output torque, so that there is enough torque to drive 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. And the above structure makes the electric shut-off valve structure compact and occupies small space.

[0043] The above is only an optional embodiment of the present scheme and is not used to limit the present scheme. For those skilled in the art, the present scheme can have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present scheme shall be included in the protection scope of the present scheme.

[0044] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, elements, components, and / or groups thereof, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof.

[0045] The relative arrangement of components and steps, numerical expressions, and numerical values set forth in the examples are not intended to limit the scope of the present application unless otherwise specifically stated. It is to be understood that the drawings are not necessarily to scale of the actual proportions used in the fabrication, assembly, and operation of the example embodiments. Techniques, methods, and apparatus known to those of ordinary skill can not be discussed in detail herein, but should be considered as part of the description unless otherwise stated. In all examples shown and discussed herein, any specific values are to be interpreted as being exemplary only and not limiting. Other examples of example embodiments can therefore have different values. It is to be noted that like numbers and letters refer to like elements throughout the several views of the drawings and, as such, no further discussion with regard thereto is deemed necessary.

[0046] In the description of the present application, it is to be understood that the orientation or positional relationships indicated by orientation words such as "front, back, upper, lower, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" are generally based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Without the opposite indication, these orientation words do not indicate and imply that the indicated device or element must have a particular orientation or be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the scope of protection of the present application. The orientation words "inner, outer" refer to the inner and outer relative to the contour of each component.

[0047] For purposes of the description hereinafter, spatial relative terms, such as "above", "below", "upper", "lower", and the like, can be used to describe the relative position of one device or feature to another device or feature as illustrated in the figures. It will be understood that the spatial relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the figures. For example, if a device in the figures is inverted, then a device described as "above" or "up" of other devices or structures can be oriented "below" or "down" relative to such other devices or structures. Accordingly, the exemplary terms "above" and "below" can encompass both an orientation of above and below. The devices can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0048] In addition, it should be noted that the use of "first", "second", and the like, terminology to describe various components in the above description is used only for the convenience of the reader and is in no way intended to limit the scope of the application.

Claims

1. An electric shut-off valve, characterized in that The valve body component (100) comprises a valve seat (210) and a valve core structure (300) rotatably arranged in the valve seat (210), the valve seat (210) is provided with a valve port (202), the valve core structure (300) opens and closes the valve port (202) by rotation, and the driving component (400) comprises a driving shell (440) which is welded with the valve seat (210) and drives the valve core structure (300) to rotate.

2. Motor-operated stop valve according to claim 1, characterized in that The outer periphery of the valve seat (210) is provided with an annular matching step (213) having a step peripheral surface and a step bottom surface, the inner wall of the driving shell (440) matches the step peripheral surface, and the end surface of the driving shell (440) matches and is welded with the step bottom surface.

3. The motor-operated globe valve of claim 1, wherein The outer periphery of the driving shell (440) is provided with an annular matching step (213) having a step peripheral surface and a step bottom surface, the inner wall of the valve seat (210) matches the step peripheral surface, and the end surface of the valve seat (210) matches and is welded with the step bottom surface.

4. The motor-operated globe valve of claim 1, wherein The driving component (400) comprises a driving output shaft (410) which drives the valve core structure (300) to rotate, and the valve body component (100) further comprises a positioning bearing (150), the outer ring of the positioning bearing (150) matches the inner wall of the valve seat (210), and the inner ring of the positioning bearing (150) matches the outer wall of the driving output shaft (410).

5. The motor-operated globe valve of claim 4, wherein, The inner wall of the valve seat (210) is provided with a valve body limiting surface (211) which limits the side of the outer ring of the positioning bearing (150) towards the valve port (202).

6. The motor-operated globe valve of claim 4, wherein, The outer wall of the driving output shaft (410) is provided with an output shaft limiting surface (412) which matches and limits the side of the inner ring of the positioning bearing (150) away from the valve port (202).

7. The motor-operated globe valve of claim 1, wherein The valve body component (100) further comprises a pre-tightening sleeve (220) which is arranged in the valve seat (210), the pre-tightening sleeve (220) is provided with an assembly hole (221), the two ends of the valve core structure (300) are a rotating end and a sealing end respectively, the rotating end rotatably matches the assembly hole (221), the pre-tightening sleeve (220) and the valve core structure (300) are axially limited and matched, the sealing end opens and closes the valve port (202) by rotation, and the driving component (400) drives the rotating end to rotate.

8. Motor-operated stop valve according to claim 7, characterized in that The valve body component (100) further comprises a thrust bearing (160), the valve core structure (300) has a thrust limiting surface (301), and the two ends of the thrust bearing (160) are limited and matched with the thrust limiting surface (301) and the end surface of the pre-tightening sleeve (220) respectively, the pre-tightening sleeve (220) is threadedly connected with the valve seat (210), and the pre-tightening sleeve (220) applies a force to the valve core structure (300) towards the valve port (202) through the thrust bearing (160).

9. The motor-operated globe valve of claim 1, wherein The valve seat (210) has a valve body sealing block (230) therein, the valve port (202) is formed by a circumferential gap 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) connected in sequence, the end surface of the valve core sealing block (330) is in abutment with the end surface of the valve body sealing block (230), and the valve core sealing block (330) has a solid structure and a gap in the circumferential direction; 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 gap of the valve core sealing block (330) corresponds to the valve port (202).

10. The motor-operated globe valve of claim 1, wherein The driving component (400) further comprises a driving rotor (420), a planetary reduction assembly (430) and a driving output shaft (410), the driving rotor (420) is drivingly connected with the planetary reduction assembly (430), and the planetary reduction assembly (430) drives the valve core structure (300) to rotate through the driving output shaft (410).

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