CN219345536U

CN219345536U - Direct-acting electric valve

Info

Publication number: CN219345536U
Application number: CN202320550808.1U
Authority: CN
Inventors: 戴保平; 石珞家; 戴雪媛; 石和平
Original assignee: Wuxi Zitu Medical Technology Co ltd
Current assignee: Wuxi Zitu Medical Technology Co ltd
Priority date: 2023-03-20
Filing date: 2023-03-20
Publication date: 2023-07-14
Anticipated expiration: 2033-03-20

Abstract

The utility model provides a direct-acting electric valve, and belongs to the technical field of valve equipment. The utility model comprises a valve body and a shell, wherein a first valve port and a second valve port which are communicated with a cavity in the valve body are respectively arranged on two adjacent sides of the valve body, a valve core capable of realizing the opening and closing of the valve body is arranged in the cavity, a motor for driving the valve core to reciprocate is arranged in the shell, the motor drives the valve core through a speed reducing mechanism, the speed reducing mechanism comprises a gear ring fixedly arranged in the shell, a planetary disc is rotatably arranged in the gear ring, at least three planetary gears meshed with the gear ring are uniformly distributed on one side of the planetary disc, a driving gear meshed with the planetary gears is arranged on an output shaft of the motor, a screw is fixedly connected in the middle of the other side of the planetary disc, and the screw is in threaded connection with the valve core.

Description

Direct-acting electric valve

Technical Field

The utility model relates to a direct-acting electric valve, and belongs to the technical field of valve equipment.

Background

In the existing direct-acting control valve, an output shaft of a motor is in transmission connection with a screw rod through a gear system, the screw rod is connected with a nut through threaded fit, the nut is connected with a valve core, and the nut is limited and can only slide along the axial direction and cannot rotate along the circumferential direction; when the valve core is in operation, the motor is started, the output shaft of the motor rotates and is transmitted to the screw rod through the gear system, and along with the rotation of the screw rod, the nut axially slides, so that the valve core is driven to axially slide, and the purpose of adjusting the opening of the valve port is achieved.

In commercial air conditioners such as multi-split air conditioners or module machines, the valve port area of the flow control valve is required to be large, so that the required driving force is large, if the direct-acting control valve is adopted, the size of a motor is inevitably increased to obtain the large driving force, the volume of the control valve is overlarge, the cost is increased, and inconvenience is brought to loading and unloading.

In the existing direct-acting control valve, a screw rod is fixed with a rotor of a motor and is connected with a nut through threaded fit, the lower end of the screw rod is directly matched with a valve core, and the nut is fixed with a valve seat; when the valve is in operation, the rotor of the motor drives the screw rod to rotate, and the screw rod is in threaded fit with the nut and the nut is fixed, so that the rotor also drives the screw rod to axially move, and the valve core is driven to open or close the valve port. However, when such a direct-acting control valve is operated, the axial center positions of the rotor and the coil member are changed due to the axial movement of the rotor, and therefore, the axial center position of the coil member cannot be always maintained, and further, the driving force is reduced, and it is also necessary to increase the size of the motor in order to open and close the valve port having a large aperture.

In view of this, it is a technical problem that a person skilled in the art needs to solve at present how to improve a direct-acting control valve, which can open and close a large-caliber valve port by a small-sized motor-driven valve element.

Disclosure of Invention

In view of the above-mentioned drawbacks of the prior art, an object of the present utility model is to provide a direct-acting type electric valve, which is used for solving the problems of complex structure, large volume, large occupied space and inconvenient assembly and disassembly of the conventional direct-acting type control valve in the prior art.

In order to achieve the above object and other related objects, the utility model provides a direct-acting electric valve, which comprises a valve body and a shell, wherein two adjacent sides of the valve body are respectively provided with a first valve port and a second valve port which are communicated with a cavity in the valve body, a valve core capable of reciprocating to open and close the valve body is arranged in the cavity, a motor for driving the valve core to reciprocate is arranged in the shell, the motor drives the valve core through a speed reducing mechanism, the speed reducing mechanism comprises a gear ring fixedly arranged in the shell, a planetary disc is rotatably arranged in the gear ring, at least three planetary gears meshed with the gear ring are uniformly distributed on one side of the planetary disc, a driving gear meshed with the planetary gears is arranged on an output shaft of the motor, and a screw is fixedly connected in the middle of the other side of the planetary disc and is in threaded connection with the valve core.

In an embodiment of the utility model, a joint of the top end of the valve core and the first valve port is conical and sleeved with a valve core sealing ring.

By adopting the technical scheme: the joint of the top end of the valve core and the first valve port is conical and sleeved with a valve core sealing ring, so that the sealing performance of the valve core is improved, and the accuracy of valve flow control is improved.

In an embodiment of the utility model, a sealing guide seat is arranged at the joint of the valve core and the valve body, a first sealing ring is arranged between the sealing guide seat and the valve body, and a second sealing ring is arranged between the valve core and the sealing guide seat.

By adopting the technical scheme: the sealing performance of the connection between the valve core and the valve body is improved by arranging the sealing guide seat, the first sealing ring and the second sealing ring.

In an embodiment of the utility model, a bearing is arranged between the planetary disc and the gear ring.

In an embodiment of the utility model, the housing is formed by combining and connecting a first housing and a second housing which are matched.

By adopting the technical scheme: the shell is formed by combining and connecting the first shell and the second shell which are matched, so that the shell is convenient to assemble and disassemble.

In an embodiment of the utility model, a control panel electrically connected to the motor is disposed inside the housing.

As described above, the direct-acting electric valve of the present utility model has the following advantages:

the valve core is connected with the motor through the screw rod and the planetary reduction mechanism, the planetary reduction mechanism is compact in structure and small in occupied space, the whole size of the electric valve is small, the electric valve is convenient to assemble and disassemble, the planetary reduction mechanism can reduce the rotating speed output by the motor to increase the output driving force, accurate control on opening and closing of the valve is effectively realized, the accuracy of valve flow control is improved, and the electric valve is simple in whole structure and convenient to assemble, disassemble and maintain.

Drawings

Fig. 1 is a schematic diagram of an overall structure of a direct-acting electric valve according to an embodiment of the utility model.

Fig. 2 is an exploded view of a direct-acting electric valve according to an embodiment of the present utility model.

Fig. 3 is a schematic front view of a direct-acting electric valve according to an embodiment of the utility model.

Fig. 4 is a schematic left-view structure of a direct-acting electric valve according to an embodiment of the utility model.

FIG. 5 is a schematic view showing the cross-sectional structure of the straight-acting type electric valve shown in FIG. 4 according to an embodiment of the present utility model.

Fig. 6 is a schematic view showing a sectional E-E structure of fig. 3 of a direct-acting type electric valve according to an embodiment of the present utility model.

Wherein, 1, the valve body; 2. a first housing; 3. a second housing; 4. a first valve port; 5. a second valve port; 6. a first seal ring; 7. sealing the guide seat; 8. a second seal ring; 9. a valve core sealing ring; 10. a valve core; 11. a control panel; 12. a screw; 13. a bearing; 14. a gear ring; 15. a motor; 16. a planet wheel; 17. a cavity; 18. a planetary disc; 19. and a drive gear.

Detailed Description

Further advantages and effects of the present utility model will become apparent to those skilled in the art from the disclosure of the present utility model, which is described by the following specific examples.

Please refer to fig. 1 to 6. It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for illustration purposes only and should not be construed as limiting the utility model to the extent that it can be practiced, since modifications, changes in the proportions, or otherwise, used in the practice of the utility model, are not intended to be critical to the essential characteristics of the utility model, but are intended to fall within the spirit and scope of the utility model. Also, the terms such as "upper," "lower," "left," "right," "middle," and "a" and the like recited in the present specification are merely for descriptive purposes and are not intended to limit the scope of the utility model, but are intended to provide relative positional changes or modifications without materially altering the technical context in which the utility model may be practiced.

Referring to fig. 1 to 6, the utility model provides a direct-acting electric valve, which comprises a valve body 1 and a housing, wherein the housing is formed by combining and connecting a first housing 2 and a second housing 3 which are matched with each other, two adjacent sides on the valve body 1 are respectively provided with a first valve port 4 and a second valve port 5 which are communicated with a cavity 17 in the valve body 1, the cavity 17 is internally provided with a valve core 10 which can reciprocate to realize opening and closing of the valve body 1, the joint of the top end of the valve core 10 and the first valve port 4 is conical and sleeved with a valve core sealing ring 9, the joint of the valve core 10 and the valve body 1 is provided with a sealing guide seat 7, a first sealing ring 6 is arranged between the sealing guide seat 7 and the valve body 1, a second sealing ring 8 is arranged between the valve core 10 and the sealing guide seat 7, a motor 15 for driving the valve core 10 to reciprocate is arranged in the housing, a control panel 11 electrically connected with the motor 15 is arranged in the housing, the motor 15 drives the valve core 10 through a speed reducing mechanism, the speed reducing mechanism comprises a gear ring 14 fixedly arranged in the housing, the gear ring 14 is internally rotatably provided with a planetary disc 18, a bearing 13 is arranged between the planetary disc 18 and the gear 14, one side of the planetary disc 18 is provided with at least three gear wheels 14 meshed with an output shaft 16, and a screw 12 is uniformly arranged on the other side of the planetary disc 18 and is fixedly meshed with the planetary wheel 12, and is fixedly connected with a screw 12, which is meshed with the planetary wheel 16, and is fixedly connected with the planetary wheel 18.

The working principle of the direct-acting electric valve is as follows: when the direct-acting electric valve is used, the first valve port 4 and the second valve port 5 are respectively communicated with a pipeline, when the valve is closed, the motor 15 is started, the motor 15 drives the planet wheel 16 to rotate through the driving gear 19 on the output shaft, the planet wheel 16 is matched with the driving gear 19 and the gear ring 14 to drive the planet disc 18 to rotate, the rotating speed of the planet disc 18 is reduced by adopting the planetary reduction mechanism, the torque is increased, the driving screw 12 is rotated when the planet disc 18 rotates, the screw 12 is in threaded connection with the valve core 10, the valve core 10 is driven to move towards the first valve port 4 through the rotation of the screw 12, the valve core 10 is closed, so that the valve is closed, when the valve is opened, the control panel 11 controls the motor 15 to reversely rotate, the screw 12 is driven by adopting the transmission of the planetary reduction mechanism to drive the valve core 10 to move rightwards, the valve core 10 is separated from the cavity 17, the first valve port 4 is communicated with the second valve port 5, the valve is opened, the rotating speed of the planet disc 18 is reduced by adopting the planetary reduction mechanism, the torque is increased, when the pipeline inside which is communicated with the first valve port 4 and the second valve port 5, the pressure is increased, the whole volume of the electric valve is increased, the small-size can be adjusted, the small-size of the valve can be accurately adjusted, and the small volume can be conveniently and the valve is convenient.

In summary, the valve core is connected with the motor through the screw and the planetary reduction mechanism, the planetary reduction mechanism is compact in structure and small in occupied space, the whole size of the electric valve is small, disassembly and assembly are convenient, the planetary reduction mechanism can reduce the rotation speed output by the motor to increase the output driving force, accurate control on opening and closing of the valve is effectively realized, the accuracy of valve flow control is improved, and the electric valve is simple in integral structure and convenient to disassemble, assemble and maintain. Therefore, the utility model effectively overcomes various defects in the prior art and has high industrial utilization value.

The above embodiments are merely illustrative of the principles of the present utility model and its effectiveness, and are not intended to limit the utility model. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the utility model. Accordingly, it is intended that all equivalent modifications and variations of the utility model be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.

Claims

1. The utility model provides a direct-acting type electric valve, includes valve body (1) and casing, and adjacent both sides set up first valve port (4) and second valve port (5) of intercommunication valve body (1) inside cavity (17) respectively on valve body (1), but cavity (17) inside sets up reciprocating motion in order to realize case (1) case (10) of opening and close, and the inside motor (15) that drive case (10) reciprocating motion that set up of casing, a serial communication port, motor (15) drive through reduction gears case (10), reduction gears is including fixed ring gear (14) that set up in the casing inside, the inside rotation of ring gear (14) is provided with planetary dish (18), one side equipartition has at least three planetary gear (16) with ring gear (14) engaged with on planetary dish (18), set up on the output shaft of motor (15) with planetary gear (16) engaged with drive gear (19), fixedly connected with screw rod (12) in the middle of planetary dish (18) opposite side, screw rod (12) with case (10) threaded connection.

2. A direct-acting electrically operated valve as set forth in claim 1 wherein: the joint of the top end of the valve core (10) and the first valve port (4) is conical and sleeved with a valve core sealing ring (9).

3. A direct-acting electrically operated valve as set forth in claim 1 wherein: the valve core (10) and the valve body (1) are connected, a sealing guide seat (7) is arranged at the joint, a first sealing ring (6) is arranged between the sealing guide seat (7) and the valve body (1), and a second sealing ring (8) is arranged between the valve core (10) and the sealing guide seat (7).

4. A direct-acting electrically operated valve as set forth in claim 1 wherein: a bearing (13) is arranged between the planetary plate (18) and the gear ring (14).

5. A direct-acting electrically operated valve as set forth in claim 1 wherein: the shell is formed by combining and connecting a first shell (2) and a second shell (3) which are matched.

6. A direct-acting electrically operated valve as set forth in claim 1 wherein: the shell is internally provided with a control panel (11) electrically connected with the motor (15).