Electric control speed change valve

Abstract

The utility model relates to the technical field of valves, in particular to an electric control speed change valve which comprises a valve body, a valve seat is installed on the outer wall of the valve body, a reduction gearbox is installed on the top of the valve seat, and a servo motor is installed on the top of the reduction gearbox. The servo motor serves as a power source, stable driving force is provided for the speed change valve, accurate control over the position of the speed change valve rod and the position of the valve element can be achieved by accurately controlling output of the servo motor, and therefore accurate adjustment of the flow speed is achieved, and the service life of the speed change valve is prolonged. The reduction gearbox is installed so that high-speed rotation of the servo motor can be converted into slow and stable movement of the speed change valve rod, the speed change valve rod is connected with the output shaft of the reduction gearbox, it is ensured that the speed change valve rod can rotate along with rotation of the output shaft of the reduction gearbox, then the valve element is driven to move in the valve body, and a valve hole formed in the valve element can be used for controlling the valve element to move. The flow velocity of the fluid can be accurately adjusted by changing the angle and the position of the valve hole.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to an electric-controlled speed-changing valve. Background Art

[0002] The electronically controlled variable speed valve uses an electric actuator to control the valve opening, thereby changing the flow rate of a fluid (such as liquid, gas or powder). Electronically controlled flow rate valves are widely used in many fields. In automated control systems, electronically controlled variable speed valves are often used to control the flow and pressure of liquids, gases, steam and other media. Their self-control performance and accuracy can meet the needs of various automated control systems. Today's electronically controlled variable speed valves have a complex structure, are inconvenient to operate, and have imprecise control, which cannot meet the needs. Utility Model Content

[0003] The utility model aims to provide an electronically controlled speed-changing valve to solve the problems in the above-mentioned background technology that the electronically controlled speed-changing valve has a complex structure, is inconvenient to operate, and has imprecise control and cannot meet the needs.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] An electrically controlled speed-changing valve comprises a valve body, an outer wall of the valve body is provided with a valve seat, a reduction box is provided on the top of the valve seat, and a servo motor is provided on the top of the reduction box;

[0006] A fixed valve seat is installed between the valve body and the valve seat, a variable speed valve rod is installed on the fixed valve seat, a valve core for adjusting the flow rate is installed on the variable speed valve rod, a valve hole is opened on the valve core, and the diameter of the valve core is adapted to the inner diameter of the valve body;

[0007] The output shaft of the reduction box is connected to the top of the speed change valve rod, and the output end of the servo motor is connected to the input end of the reduction box.

[0008] Preferably, connectors connected to external pipelines are coaxially mounted at both ends of the valve body.

[0009] Preferably, a fixed socket which is adapted to the size of the output shaft and is plug-fitted therewith is provided at the top center of the shift valve rod.

[0010] Preferably, the cross-sections of the output shaft and the fixing socket are square.

[0011] Preferably, a mounting seat is provided at the bottom of the reduction box, and the mounting seat is connected to the top of the valve seat by at least three groups of fixing bolts.

[0012] Preferably, a power switch and a speed regulating knob are installed on the top of the servo motor.

[0013] Preferably, the valve core is spherical, and a sealing ring with a thickness of 1-2 mm is installed on the outer wall of the valve core.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. In this electronically controlled speed-changing valve, the servo motor is used as the power source to provide a stable driving force for the speed-changing valve. By accurately controlling the output of the servo motor, the position of the speed-changing valve stem and the valve core can be accurately controlled, thereby realizing accurate adjustment of the flow rate. The installation of the reduction box enables the high-speed rotation of the servo motor to be converted into the slow and stable movement of the speed-changing valve stem. The speed-changing valve stem is connected to the output shaft of the reduction box, ensuring that the speed-changing valve stem can rotate with the rotation of the output shaft of the reduction box, thereby driving the valve core to move in the valve body. The valve hole opened on the valve core can realize accurate adjustment of the fluid flow rate by changing the angle and position of the valve hole. The design of the valve hole enables the fluid to be subjected to different degrees of resistance when passing through the valve body, thereby realizing accurate control of the flow rate.

[0016] 2. In the electric control speed change valve, a fixed socket that matches the size of the output shaft and is plug-fitted is opened at the top center of the speed change valve stem. The cross-sections of the output shaft and the fixed socket are square, so that the output shaft can be firmly inserted into the fixed socket, achieving a firm connection with the speed change valve stem, and preventing loosening or falling off during operation.

[0017] 3. In this electronically controlled variable speed valve, a power switch and a speed knob are installed on the top of the servo motor, so that the user can easily control the switch and speed of the servo motor. The setting of the power switch allows the user to easily start or close the variable speed valve, while the speed knob allows the user to adjust the flow rate according to actual needs, achieving precise control of the flow rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, further detailed explanation is provided, but the accompanying drawings do not constitute a limitation to the present invention.

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] Figure 2 It is a schematic diagram of the cross-sectional structure of the speed change valve rod of the utility model;

[0021] Figure 3 It is a schematic diagram of the exploded structure of the power mechanism and the speed change valve rod of the utility model.

[0022] The meaning of the symbols in the figure:

[0023] 10. Valve body; 11. Connector; 12. Fixed valve seat; 13. Valve core; 14. Valve hole; 15. Variable speed valve stem; 16. Fixed socket;

[0024] 20. Valve seat;

[0025] 30. reduction box; 31. mounting seat; 32. output shaft;

[0026] 40. Servo motor; 41. Power switch; 42. Speed ​​control knob. DETAILED DESCRIPTION

[0027] The following will combine the embodiments of the utility model and the drawings of the specification to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] In the description of the present invention, it should be understood that the terms "center", "vertical", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0029] An electronically controlled speed-changing valve, such as Figure 1-Figure 3As shown, it includes a valve body 10, a valve seat 20 is installed on the outer wall of the valve body 10, a reduction box 30 is installed on the top of the valve seat 20, and a servo motor 40 is installed on the top of the reduction box 30; a fixed valve seat 12 is installed between the valve body 10 and the valve seat 20, a variable speed valve stem 15 is installed on the fixed valve seat 12, a valve core 13 for adjusting the flow rate is installed on the variable speed valve stem 15, a valve hole 14 is opened on the valve core 13, and the diameter of the valve core 13 is adapted to the inner diameter of the valve body 10; the output shaft 32 of the reduction box 30 is connected to the top of the variable speed valve stem 15, and the output end of the servo motor 40 is connected to the input end of the reduction box 30. By using the servo motor 40 as a power source, the variable speed valve stem 15 can be used to adjust the flow rate. The speed valve provides a stable driving force. By precisely controlling the output of the servo motor 40, the position of the speed change valve rod 15 and the valve core 13 can be precisely controlled, thereby realizing precise adjustment of the flow rate. The installation of the reduction box 30 enables the high-speed rotation of the servo motor 40 to be converted into the slow and stable movement of the speed change valve rod 15. The speed change valve rod 15 is connected to the output shaft 32 of the reduction box 30, ensuring that the speed change valve rod 15 can rotate with the rotation of the output shaft 32 of the reduction box 30, thereby driving the valve core 13 to move in the valve body 10. The valve hole 14 opened on the valve core 13 can realize precise adjustment of the fluid flow rate by changing the angle and position of the valve hole 14. The design of the valve hole 14 enables the fluid to be subjected to different degrees of resistance when passing through the valve body 10, thereby realizing precise control of the flow rate.

[0030] Furthermore, connectors 11 connected to external pipelines are coaxially mounted on both ends of the valve body 10, so that the electronically controlled speed-changing valve can be conveniently connected to external pipelines to achieve smooth transmission of the fluid.

[0031] Specifically, a fixed socket 16 that matches the size of the output shaft 32 and is plug-fitted to the top center of the speed change valve rod 15 is provided. The cross-sections of the output shaft 32 and the fixed socket 16 are square, so that the output shaft 32 can be firmly inserted into the fixed socket 16, thereby achieving a firm connection with the speed change valve rod 15 and preventing loosening or falling off during operation.

[0032] Among them, a mounting seat 31 is provided at the bottom of the reduction box 30, and the mounting seat 31 is connected to the top of the valve seat 20 through at least three sets of fixing bolts, so that the reduction box 30 can be firmly installed on the valve seat 20, ensuring its stability and reliability during operation.

[0033] It is worth noting that a power switch 41 and a speed knob 42 are installed on the top of the servo motor 40, so that the user can conveniently control the switch and speed of the servo motor 40. The setting of the power switch 41 enables the user to easily start or close the variable speed valve, while the speed knob 42 allows the user to adjust the flow rate according to actual needs, thereby achieving precise control of the flow rate.

[0034] In addition, the valve core 13 is spherical, and a sealing ring with a thickness of 1-2 mm is installed on the outer wall of the valve core 13, which enhances the sealing between the valve core 13 and the valve body 10, prevents the occurrence of fluid leakage, and ensures the working performance and safety of the speed change valve.

[0035] The working principle of the electric control variable speed valve is as follows: the operator installs the valve body 10 at the desired position, ensures that it is stable and well connected to the pipeline system, installs the servo motor 40 on the top of the reduction box 30, and ensures that the output end of the servo motor 40 is correctly connected to the input end of the reduction box 30, starts the servo motor 40, and initializes it through the control system, including setting parameters such as the initial speed and direction. After the power of the servo motor 40 is decelerated by the reduction box 30, it is transmitted to the variable speed valve stem 15 to make it rotate slowly and steadily. The rotation of the variable speed valve stem 15 drives the valve core 13 to move in the valve body 10, thereby changing the angle and position of the valve hole 14. By changing the angle and position of the valve hole 14, the resistance of the fluid passing through the valve body 10 is adjusted, thereby accurately controlling the flow rate.

[0036] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. An electronically controlled speed-changing valve, comprising a valve body (10), characterized in that: A valve seat (20) is installed on the outer wall of the valve body (10), a reduction box (30) is installed on the top of the valve seat (20), and a servo motor (40) is installed on the top of the reduction box (30); A fixed valve seat (12) is installed between the valve body (10) and the valve seat (20), a variable speed valve rod (15) is installed on the fixed valve seat (12), a valve core (13) for adjusting the flow rate is installed on the variable speed valve rod (15), a valve hole (14) is opened on the valve core (13), and the diameter of the valve core (13) is matched with the inner diameter of the valve body (10); The output shaft (32) of the reduction box (30) is connected to the top of the speed change valve rod (15), and the output end of the servo motor (40) is connected to the input end of the reduction box (30).

2. The electronically controlled speed-changing valve according to claim 1, characterized in that: Connectors (11) connected to external pipelines are coaxially mounted on the two ends of the valve body (10).

3. The electronically controlled speed-changing valve according to claim 1, characterized in that: A fixed insertion hole (16) which matches the size of the output shaft (32) and is plug-fitted is provided at the top center of the speed change valve rod (15).

4. The electronically controlled speed-changing valve according to claim 3, characterized in that: The cross sections of the output shaft (32) and the fixing socket (16) are square.

5. The electronically controlled speed-changing valve according to claim 1, characterized in that: A mounting seat (31) is provided at the bottom of the reduction box (30), and the mounting seat (31) is connected to the top of the valve seat (20) via at least three sets of fixing bolts.

6. The electronically controlled speed-changing valve according to claim 1, characterized in that: A power switch (41) and a speed regulating knob (42) are installed on the top of the servo motor (40).

7. The electronically controlled speed-changing valve according to claim 1, characterized in that: The valve core (13) is spherical, and a sealing ring with a thickness of 1-2 mm is installed on the outer wall of the valve core (13).

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