CN217634143U

CN217634143U - Device for improving maneuverability and sealing performance of electric valve

Info

Publication number: CN217634143U
Application number: CN202121660900.0U
Authority: CN
Inventors: 陈华军; 何孝水; 陈雨龙
Original assignee: Zhuji Yiba Electronic Valve Co ltd
Current assignee: Zhuji Yiba Electronic Valve Co ltd
Priority date: 2021-07-21
Filing date: 2021-07-21
Publication date: 2022-10-21
Anticipated expiration: 2031-07-21

Abstract

The utility model discloses a device for improving maneuverability and sealing performance of an electric valve, which comprises a valve seat and an execution assembly, wherein the execution assembly comprises a screw rod, a magnetic rotor and a bearing valve core, the screw rod is fixed, the position of the screw rod is coaxial with the magnetic rotor, the center of the magnetic rotor is provided with an internal thread section matched with the screw rod, and the lower part of the magnetic rotor is connected with the bearing valve core; a valve cavity matched with the bearing valve core is arranged in the valve seat; the magnetic rotor drives the bearing valve core to move up and down under the electromagnetic induction action of the motor stator and the transmission action of the threads. The electric device has the advantages of high maneuverability, good internal sealing property, long service life and the like.

Description

Device for improving mobility and sealing performance of electric valve

Technical Field

The utility model relates to an improve device of motorised valve mobility and leakproofness.

Background

The electric valve is used as an important component for forming a refrigerating system and is widely applied to refrigerating units, cold storages, supermarket refrigerators and the like. The electric valve has a main function of realizing the refining adjustment and opening and closing actions of the flow.

At present, the main structure of electric valves at home and abroad is a needle valve structure, and most of torque is lost on threads in the ascending process under the influence of axial pressure of a valve core and system pressure, so that great torque of a motor needs to be consumed, and the maneuverability of the valve is reduced; the valve core is in a cantilever state due to the structure of the valve, so that the valve core is easy to wear in the opening and closing processes of the valve, the internal leakage rate is increased, and the flow control of a refrigerating system is unstable.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome above-mentioned prior art not enough, provide one kind and provide the device of optimizing motorised valve mobility and leakproofness.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a device for improving mobility and sealing performance of an electric valve comprises a valve seat and an executing assembly, wherein the executing assembly comprises a screw rod, a magnetic rotor and a bearing valve core, the screw rod is fixed and is coaxial with the magnetic rotor, an internal thread section matched with the screw rod is arranged at the center of the magnetic rotor, and the lower part of the magnetic rotor is connected with the bearing valve core; a valve cavity matched with the bearing valve core is arranged in the valve seat; the magnetic rotor drives the bearing valve core to move up and down under the electromagnetic induction action of the motor stator and the transmission action of the threads.

In the above device for improving the maneuverability and sealing performance of the electric valve, the screw rod comprises an external thread section matched with an internal thread section of the magnetic rotor, and a handle is arranged above the external thread section and is fixed, so as to prevent the magnetic rotor from radial deviation.

In the above device for improving the maneuverability and sealing performance of the electric valve, the outer wall of the valve seat is formed with a first flow valve port and a second flow valve port which are communicated with the valve cavity, and the first flow valve port and the second flow valve port are symmetrical in position and have the same shape, so that the forward flow characteristic and the reverse flow characteristic are equivalent.

In the device for optimizing the maneuverability and the sealing performance of the electric valve, a rotating shaft column is formed outside the internal thread section of the magnetic rotor, and a fixed shaft column matched with the bearing valve core is arranged below the rotating shaft column.

In the above device for improving the maneuverability and the sealing performance of the electrically operated valve, the bearing valve core comprises a bearing inner sleeve, a rolling part and a valve core sleeve, the bearing inner sleeve is fixed on the fixed shaft column of the magnetic rotor, and the rolling part is located between the bearing inner sleeve and the valve core sleeve; the outer wall of the valve core sleeve is matched with the inner wall of the valve cavity.

In the device for improving the maneuverability and the sealing performance of the electric valve, the height of the valve core sleeve is larger than that of the first flow valve port, so that the flow of the fluid is not leaked when the electric valve is in the closed position.

Compared with the prior art, the utility model discloses following profitable effect has:

firstly, through the precise matching of the bearing valve core and the valve cavity in the valve seat, on one hand, the bearing valve core is always in the valve cavity under the action of the axial limiting device, and the bearing valve core cannot shake under the action of fluid, so that the bearing valve core is abraded; on the other hand, the motor-operated valve does not leak in the closed state.

Secondly, through the matching of the outer wall of the valve core sleeve and the inner wall of the valve cavity, when the electric valve is in a closed state, when a first flow valve port or a second flow valve port in fluid enters, in the ascending process, the valve core sleeve generates downward linear sliding friction under the action of the lateral pressure of the fluid on the valve core sleeve; therefore, the sliding friction force is overcome, large motor torque is not needed, and the maneuverability of the electric valve is further improved.

Drawings

The utility model is further explained with the attached drawings:

fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of the valve seat of the present invention;

FIG. 3 is a schematic sectional view of the valve seat of the present invention

FIG. 4 is a schematic view of the structure of the lead screw of the present invention;

fig. 5 is a schematic structural view of the middle magnetic rotor of the present invention;

fig. 6 is a schematic structural view of the middle bearing valve core of the present invention;

in the figure, 1-valve seat, 11-valve cavity, 12-first flow valve port, 13-second flow valve port; 2-screw rod, 21-external thread section, 22-handle; 3-magnetic rotor, 31-internal thread section, 32-rotating shaft column, 33-fixed shaft column, 34-magnetic pole part; 4-bearing valve core, 41-bearing inner sleeve, 42-rolling part and 43-valve core sleeve.

Detailed Description

The technical solution of the present invention is further described in detail by the following embodiments.

Referring to fig. 1, a device for improving the maneuverability and sealing of an electric valve comprises a valve seat and an actuating assembly,

the executing assembly comprises a screw rod 2, a magnetic rotor 3 and a bearing valve core 4, wherein the screw rod 2 is fixed and is coaxial with the magnetic rotor 3, an internal thread section 31 matched with the screw rod 2 is arranged at the center of the magnetic rotor 3, and the lower part of the magnetic rotor 3 is connected with the bearing valve core 4; a valve cavity 11 matched with the bearing valve core 4 is arranged in the valve seat 1;

the action principle is as follows: the magnetic rotor 3 drives the bearing valve core 4 to move up and down under the electromagnetic induction action of the motor stator and the transmission action of the screw thread; when the bearing valve core 4 is under the action of the radial pressure of the fluid, the outer wall of the valve core sleeve 43 on the bearing valve core 4 is matched with the inner wall of the valve cavity 11.

The flow regulation function of the electric valve is explained in further detail: when the position of the movable spring 8 is between the lower stop portion and the upper stop portion of the guide spring 7, the position of the bearing valve body 6 changes with the position of the magnetic rotor 5, and the flow area changes accordingly, thereby realizing the flow rate regulation function.

Referring to fig. 2 and 3, the valve seat 1 of the present invention will be further specifically described as follows:

the outer wall of the valve seat 1 is provided with a first flow valve port 12 and a second flow valve port 13 which are communicated with the valve cavity 11, and the first flow valve port 12 and the second flow valve port 13 are symmetrical in position and identical in shape.

Through the symmetrical arrangement and the same shape of the two flow valve ports, the two-way flow equality is realized, and the flow characteristic curves are the same, so that the control program design of the refrigerating system unit is facilitated.

Referring to fig. 4, the screw rod 2 of the actuator assembly of the present invention is further specifically described as follows:

the screw rod 2 comprises an external thread section 21 matched with an internal thread section 31 of the magnetic rotor 3, a handle part 22 is arranged above the external thread section 21, and the handle part 22 is fixed. In the utility model, the fixing mode of the screw rod 1 is preferably selected; and (4) resistance welding.

With reference to fig. 5, the magnetic rotor 3 of the actuator assembly of the present invention is further specifically described as follows:

wherein, the external part of the internal thread section 31 of the magnetic rotor 3 forms a rotating shaft column 32, a fixed shaft column 33 matched with the bearing valve core 4 is arranged below the rotating shaft column 32, a magnetic pole part 34 is formed outside the rotating shaft column 52, and a magnetic field generated by the magnetic pole part 34 can interact with a magnetic field generated when the motor stator is electrified.

Referring to fig. 6, the bearing cartridge 4 of the actuator assembly of the present invention will be further specifically described as follows:

the bearing valve core 4 comprises a bearing inner sleeve 41, a rolling part 42 and a valve core sleeve 43,

wherein, the bearing inner 41 is fixed on the fixed shaft column 33 of the magnetic rotor 3, the rolling part 42 is located between the bearing inner 41 and the valve core 43; the outer wall of the valve core sleeve 43 is matched with the inner wall of the valve cavity 11; the utility model discloses in, case cover 43 can be under fluid pressure, can elastic deformation and can not receive under the influence of pressure, can resume original shape.

The rolling part 42 is preferably a ball, which is beneficial to further reducing the radial friction resistance and improving the mobility of the electric valve;

the height of the valve core sleeve 43 is greater than that of the first flow valve port 12, so that on one hand, when the electric valve is in a closed position, the flow of fluid is not leaked, and on the other hand, the valve core sleeve 43 is always in the valve cavity 11 and always precisely matched with the valve cavity 11, so that the valve core sleeve 43 is not easy to wear, the service life of the electric valve is prolonged, and the flow control of the refrigeration system is stable.

According to the detailed description of the external thread section 21 of the screw rod 2 and the internal thread section 31 of the magnetic rotor 3, the transmission function of the electric valve is realized.

According to the above specific explanation, how the electric valve of the present invention improves its maneuverability is further specifically explained:

the surfaces of the middle valve cavity 11 and the bearing valve core 4 of the utility model are both subjected to surface finish treatment;

through the utility model discloses the outer wall of well bearing case 4 cooperatees with the inner wall of valve pocket 11, when the motorised valve is in the closed condition, when first flow valve mouth 12 or second flow valve mouth 13 entered in the fluid, in the opening process, magnetic rotor 3 drove bearing inner race 41 synchronous revolution, and case cover 43 does not follow magnetic rotor 3 and makes rotary motion under the effect of roll portion 42, only makes axial displacement motion; a downward sliding friction force is generated under the action of the lateral pressure of the fluid on the valve core sleeve 63; during the transmission process, the direct influence of the fluid pressure on the threads is eliminated. Therefore, the sliding friction force is overcome, the large motor torque is not required to be consumed, and the maneuverability of the electric valve is further improved.

The above embodiments are only for illustrating the technical conception and the characteristics of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention, and accordingly, the present invention is not limited by the embodiments. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims

1. The device for improving the mobility and the sealing performance of the electric valve comprises a valve seat (1) and an execution assembly, and is characterized in that: the executing assembly comprises a screw rod (2), a magnetic rotor (3) and a bearing valve core (4), the screw rod (2) is fixed, the position of the screw rod is coaxial with the magnetic rotor (3), an internal thread section (31) matched with the screw rod (2) is arranged in the center of the magnetic rotor (3), and the lower part of the magnetic rotor (3) is connected with the bearing valve core (4); and a valve cavity (11) matched with the bearing valve core (4) is arranged in the valve seat (1).

2. The apparatus of claim 1, wherein the means for enhancing maneuverability and sealing of the motorized valve comprises: the screw rod (2) comprises an external thread section (21) matched with an internal thread section (31) of the magnetic rotor (3), and a handle part (22) is arranged above the external thread section (21).

3. The device of claim 1, wherein the means for improving the maneuverability and sealing of the electrically actuated valve comprises: the outer wall of the valve seat (1) is provided with a first flow valve port (12) and a second flow valve port (13) which are communicated with the valve cavity (11), and the first flow valve port (12) and the second flow valve port (13) are symmetrical in position and identical in shape.

4. The device of claim 1, wherein the means for improving the maneuverability and sealing of the electrically actuated valve comprises: and a rotating shaft column (32) is formed outside the internal thread section (31) of the magnetic rotor (3), and a fixed shaft column (33) matched with the bearing valve core (4) is arranged below the rotating shaft column (32).

5. An arrangement for improving the maneuverability and sealing of an electrically operated valve according to claim 1 or 4, wherein: the bearing valve core (4) comprises a bearing inner sleeve (41), a rolling part (42) and a valve core sleeve (43), the bearing inner sleeve (41) is fixed on a fixed shaft column (33) of the magnetic rotor (3), and the rolling part (42) is positioned between the bearing inner sleeve (41) and the valve core sleeve (43); the outer wall of the valve core sleeve (43) is matched with the inner wall of the valve cavity (11).

6. The device of claim 5, wherein the means for improving the maneuverability and sealing of the electrically actuated valve comprises: the height of the valve core sleeve (43) is greater than that of the first flow valve port (12).