CN111765285B

CN111765285B - Electric valve

Info

Publication number: CN111765285B
Application number: CN201910258195.2A
Authority: CN
Inventors: 宋治国; 许学飞
Original assignee: Zhejiang DunAn Hetian Metal Co Ltd
Current assignee: Zhejiang DunAn Hetian Metal Co Ltd
Priority date: 2019-04-01
Filing date: 2019-04-01
Publication date: 2022-08-16
Anticipated expiration: 2039-04-01
Also published as: CN111765285A

Abstract

The present invention provides an electrically operated valve comprising: the bottom end of the sleeve is fixedly sleeved on the valve seat, and the sleeve and the valve seat are enclosed to form a closed space; the stop block is fixedly arranged at the top of the sleeve; the two ends of the central shaft are respectively arranged on the stop block and the valve seat; and the rotor is sleeved on the central shaft. When the coil is electrified to drive the rotor to rotate, because the two ends of the central shaft are respectively fixed on the stop block and the valve seat, and the stop block and the valve seat are respectively and fixedly arranged at the two ends of the sleeve, the rotor cannot swing when rotating, and the rotor cannot collide with the inner wall of the sleeve, so that the noise is avoided. In addition, the stop block is arranged at the top of the sleeve, so that the rotor can be installed relatively lower during actual installation, the center of gravity of the rotor is reduced, and the collision energy of the rotor is further reduced.

Description

Electric valve

Technical Field

The invention relates to the technical field of control devices, in particular to an electric valve.

Background

At present, an electric valve utilizes the working principle of a stepping motor, a coil is utilized to drive a magnetic rotor component to rotate, the rotation operation of the magnetic rotor component is converted into the up-and-down motion of a screw rod, and a valve needle connected with the screw rod is driven by the screw rod to ascend or descend, so that the flow of the electric valve is controlled.

The magnetic rotor stopping structure of the existing electric valve is usually arranged at the lower part of a rotor, when the magnetic rotor rotates, the rotor is easy to swing, and when the magnetic rotor rotates and swings, the magnetic rotor is easy to collide with the wall surface of the electric valve to generate noise.

Disclosure of Invention

The invention mainly aims to provide an electric valve to solve the problem that a rotor of the electric valve in the prior art is easy to swing.

In order to achieve the above object, the present invention provides an electric valve comprising: the bottom end of the sleeve is fixedly sleeved on the valve seat, and the sleeve and the valve seat are enclosed to form a closed space; the stop block is fixedly arranged at the top of the sleeve; the two ends of the central shaft are respectively arranged on the stop block and the valve seat; and the rotor is sleeved on the central shaft.

Furthermore, the stopping block partially protrudes downwards along the inner side of the sleeve to form a stopping part, and the rotor partially extends upwards to form a stopping part in a protruding mode.

Furthermore, a first groove is formed in the outer side of the stop block, and a first protrusion matched with the first groove is arranged on the inner wall of the sleeve.

Furthermore, a second groove is formed in the top of the stop block, and a second protrusion matched with the second groove is arranged on the inner wall of the top end of the sleeve.

Furthermore, a third bulge is arranged at the top of the stop block, and a third groove matched with the third bulge is arranged on the inner wall of the top end of the sleeve.

Further, the center of gravity of the rotor is located below the center point of the central shaft.

Furthermore, the electric valve further comprises an elastic element, the elastic element is sleeved on the central shaft, and two ends of the elastic element respectively abut against the stop block and the rotor.

Further, the electric valve further comprises a sliding block, and the sliding block is installed at the bottom of the rotor.

Furthermore, the valve seat protrudes upwards to extend to form a boss, a valve port is arranged on the boss, the valve port is opened or closed under the rotation of the sliding block, and the boss extends into the rotor.

By applying the technical scheme of the invention, when the coil is electrified to drive the rotor to rotate, because the two ends of the central shaft are respectively fixed on the stop block and the valve seat which are respectively fixedly arranged at the two ends of the sleeve, the rotor cannot swing when rotating, the rotor cannot collide with the inner wall of the sleeve, and the generation of noise is avoided. In addition, the stop block is arranged at the top of the sleeve, so that the rotor can be installed relatively lower during actual installation, the center of gravity of the rotor is reduced, and the collision energy of the rotor is further reduced.

Therefore, the electric valve solves the problem of rotor swing caused by lower stop; the problem of wall collision noise caused by overlarge rotor swing is solved; the center of gravity of the rotor is lowered, and the collision energy of the rotor is lowered.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

figure 1 schematically shows a cross-sectional view of an electrically operated valve of a first embodiment of the invention;

figure 2 schematically shows a cross-sectional view of the bushing and stop block of an electrically operated valve of a first embodiment of the invention;

figure 3 schematically shows a cross-sectional view of the bushing and stop block of an electrically operated valve of a second embodiment of the invention;

figure 4 schematically shows a cross-sectional view of the bushing and stop block of an electrically operated valve of a third embodiment of the invention.

Wherein the figures include the following reference numerals:

10. a sleeve; 11. a first protrusion; 12. a second protrusion; 13. a third groove; 20. a valve seat; 201. a boss; 30. a stop block; 301. a stopper portion; 31. a first groove; 32. a second groove; 33. a third protrusion; 40. a rotor; 401. a resisting part; 50. an elastic element; 60. a central shaft; 70. a slide block.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

Referring to fig. 1 to 4, according to an embodiment of the present invention, there is provided an electric valve, which includes a sleeve 10, a valve seat 20, a stopper 30, a central shaft 60, and a rotor 40.

The bottom end of the sleeve 10 is fixedly sleeved on the valve seat 20, and the sleeve 10 and the valve seat 20 enclose to form a closed space; the stop block 30 is fixedly arranged at the top of the sleeve 10; both ends of the central shaft 60 are respectively installed on the stopper 30 and the valve seat 20; the rotor 40 is fitted over the central shaft 60.

When the coil is electrified to drive the rotor 40 to rotate, because the two ends of the central shaft 60 are respectively fixed on the stop block 30 and the valve seat 20, and the stop block 30 and the valve seat 20 are respectively and fixedly arranged at the two ends of the sleeve 10, the rotor 40 cannot swing when rotating, the rotor 40 cannot collide with the inner wall of the sleeve 10, and the generation of noise is avoided. In addition, in the present embodiment, since the stopper 30 is disposed at the top of the casing 10, the rotor 40 can be installed relatively lower during actual installation, which lowers the center of gravity of the rotor 40, and thus lowers the collision energy of the rotor 40.

Preferably, the stop block 30 in this embodiment is fixed on the top of the sleeve 10 by injection molding, and the structure is stable and reliable. Of course, in other embodiments of the present invention, the stop block 30 may be fixed on the top of the sleeve 10 by a screw or rivet, and other modifications within the spirit of the present invention are within the scope of the present invention.

The stopping block 30 is provided with a stopping portion 301 which partially protrudes downwards along the inner side of the sleeve 10, the rotor 40 is provided with a stopping portion 401 which partially extends upwards and protrudes upwards, and the stopping portion 401 is matched with the stopping portion 301, so that stopping of the rotor 40 is facilitated. The center of gravity of the rotor 40 is located below the center point of the central shaft 60, thereby reducing the collision energy of the rotor 40. Referring to fig. 1 and 2, in the first embodiment of the present invention, the outer side of the stopper 30 is provided with at least one first groove 31 asymmetrically arranged with respect to the axis of the stopper 30, and correspondingly, the inner wall of the sleeve 10 is provided with a first protrusion 11 adapted to the first groove 31. The fitting stability of the stop block 30 and the sleeve 10 in the present embodiment can be effectively improved by the fitting fixation of the first groove 31 and the first protrusion 11, and at the same time, a necessary reference point can be provided for the design of the electric valve.

Referring to fig. 3, according to the second embodiment of the present invention, an electric valve is provided, the electric valve in this embodiment has a structure substantially identical to that of the electric valve in the first embodiment, except that the top of the stop block 30 of the electric valve in this embodiment is provided with at least one second groove 32 asymmetrically arranged with respect to the axis of the stop block 30, and the inner wall of the top end of the sleeve 10 is provided with a second protrusion 12 matching with the second groove 32.

Referring to fig. 4, according to a third embodiment of the present invention, an electric valve is provided, which is substantially identical to the electric valve of the first embodiment, except that the top of the stop block 30 is provided with at least one third protrusion 33 asymmetrically arranged with respect to the axis of the stop block 30, and the inner wall of the top end of the sleeve 10 is provided with a third groove 13 matching with the third protrusion 33.

Of course, in other embodiments of the present invention, at least one fourth protrusion asymmetrically arranged with respect to the axis of the stopper 30 may be further provided on the outer side of the stopper 30, and a fourth groove adapted to the fourth protrusion may be provided on the inner wall of the sleeve 10.

Referring to fig. 1 again, the electric valve in this embodiment further includes an elastic element 50, the elastic element 50 is sleeved on the central shaft 60, and two ends of the elastic element 50 respectively abut against the stop block 30 and the rotor 40, so as to enable the rotor 40 to be reset after rotating on the rotor 40. Preferably, the elastic element 50 in this embodiment is a spring. Of course, in other embodiments of the present invention, the elastic element 50 may be a rubber pad or a rubber sleeve, and other modifications within the spirit of the present invention are within the scope of the present invention.

The electric valve further comprises a slider 70, which slider 70 is mounted at the bottom of the rotor 40. When the rotor 40 rotates, the sliding block 70 can be moved to rotate, and then the air inlet on the valve seat 20 is opened or closed, so that the structure is simple and the realization is convenient.

The valve seat 20 in this embodiment protrudes upward to be provided with a boss 201, the boss 201 is provided with a valve port, the valve port is opened or closed under the rotation of the slider 70, and the boss 201 extends into the rotor 40.

From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects: when the coil is electrified to drive the rotor to rotate, because the two ends of the central shaft are respectively fixed on the stop block and the valve seat, and the stop block and the valve seat are respectively and fixedly arranged at the two ends of the sleeve, the rotor cannot swing when rotating, and the rotor cannot collide with the inner wall of the sleeve, so that the noise is avoided. In addition, in the embodiment, the stop block is arranged at the top of the sleeve, so that the rotor can be installed relatively lower during actual installation, the gravity center of the rotor is reduced, and the collision energy of the rotor is further reduced.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and if not stated otherwise, the terms have no special meaning, and therefore, the scope of the present invention should not be construed as being limited.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An electrically operated valve, comprising:

the sealing device comprises a sleeve (10) and a valve seat (20), wherein the bottom end of the sleeve (10) is fixedly sleeved on the valve seat (20), and the sleeve (10) and the valve seat (20) enclose to form a closed space;

a stop block (30), wherein the stop block (30) is fixedly arranged at the top of the sleeve (10);

a central shaft (60), both ends of the central shaft (60) are respectively installed on the stop block (30) and the valve seat (20);

the rotor (40), the said rotor (40) is fitted over the said central shaft (60); the center of gravity of the rotor (40) is located below the center point of the central shaft (60);

the electric valve further comprises: a slider (70), wherein the slider (70) is installed at the bottom of the rotor (40);

the stopping block (30) is partially provided with a stopping part (301) in a downward protruding mode along the inner side of the sleeve (10), the rotor (40) is partially provided with a resisting part (401) in an upward extending and protruding mode, and the resisting part (401) is matched with the stopping part (301) to facilitate stopping of the rotor (40);

the valve seat (20) is provided with a valve port which is opened or closed under the rotation of the sliding block (70).

2. Electric valve according to claim 1, characterized in that the stop block (30) is provided with a first groove (31) on the outside and the sleeve (10) is provided with a first protrusion (11) on the inner wall adapted to the first groove (31).

3. The electric valve according to claim 2, characterized in that the top of the stop block (30) is provided with a second groove (32), and the inner wall of the top end of the sleeve (10) is provided with a second protrusion (12) matched with the second groove (32).

4. The electric valve according to claim 2, characterized in that the top of the stop block (30) is provided with a third protrusion (33), and the inner wall of the top end of the sleeve (10) is provided with a third groove (13) matched with the third protrusion (33).

5. Electric valve according to any one of claims 1 to 4, characterized in that it further comprises an elastic element (50), said elastic element (50) being fitted over said central shaft (60), the two ends of said elastic element (50) being in abutment against said stop block (30) and said rotor (40), respectively.

6. The electric valve according to claim 5, characterized in that the valve seat (20) is provided with a boss (201) protruding upwards, and the boss (201) extends into the rotor (40).