Spring limiting mechanism of high-speed valve actuator

Abstract

The utility model discloses a spring limiting mechanism of a high-speed valve actuator, which relates to the field of valve actuators and comprises an actuator body, a mounting plate is arranged in the actuator body, and a motor is arranged at one end of the mounting plate. The top of the valve rotating shaft is connected with one end of a limiting check block, limiting switches are arranged on the two sides of the valve rotating shaft and located at the top end of the mounting plate, and spring pieces are arranged on the two sides of the end, away from the valve rotating shaft, of the limiting check block. The valve actuator is simple in structure, high in installation efficiency and convenient to replace and maintain, the limiting switch can make contact with the limiting check block in advance, so that the motor stops rotating, the spring structure plays a certain buffering role, the situation that the limiting check block moving at a high speed makes direct contact with the limiting switch and consequently the limiting switch is damaged is avoided, and the service life of the valve actuator is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of valve actuators, in particular to a spring limiting mechanism of a high-speed valve actuator. Background Art

[0002] High-speed valve actuators are devices used to control the opening and closing of valves. They are designed to achieve fast response and high-precision control. They are often used in industrial systems that require rapid switching of fluid flow, such as petrochemical, power, natural gas transmission and water treatment.

[0003] The current valve actuator switching time is mostly more than ten seconds, and the motor speed is about one revolution per minute, so the inertia is very small, there is no overshoot and collision with the limit switch, and no spring buffer is required. However, according to actual applications, when fast switching is required, the switching time needs to be less than 3 seconds. In this case, the valve switching speed needs to be more than 5 revolutions per minute. At this time, the rotation inertia is very large, and the limit switch will be damaged due to excessive inertia during switching, reducing the service life.

[0004] Currently, no effective solution has been proposed for the problems in the related technologies. Utility Model Content

[0005] In view of the problems in the related technology, the utility model proposes a spring limiting mechanism of a high-speed valve actuator to overcome the above technical problems existing in the existing related technology.

[0006] To this end, the specific technical solutions adopted by the utility model are as follows:

[0007] According to one aspect of the utility model, a spring limit mechanism of a high-speed valve actuator is provided, including an actuator body, a mounting plate is arranged inside the actuator body, a motor is arranged at one end of the mounting plate; a valve shaft is arranged at the other end of the mounting plate, the top of the valve shaft is connected to one end of a limit block, limit switches are arranged on both sides of the valve shaft and at the top of the mounting plate, and spring sheets are arranged on both sides of the end of the limit block away from the valve shaft.

[0008] Furthermore, in order to stably connect the spring sheet and the limit block, a first slot is provided inside the limit block, a second slot is provided at one end of the first slot and located inside the limit block, and the first slot is perpendicular to and connected to the second slot, and the second slot extends from one end of the first slot to the outside of the limit block.

[0009] Furthermore, in order to prevent the limit block from directly hitting the limit switch, the spring sheet includes a clamping section arranged in the first clamping groove, a first elastic section connected to the clamping section is arranged in the second clamping groove, and a second elastic section is arranged at one end of the first elastic section close to the limit switch; a V-shaped structure is formed between the first elastic section and the second elastic section.

[0010] According to another aspect of the utility model, a spring limit mechanism of a high-speed valve actuator is also provided, including an actuator body, a mounting plate is arranged inside the actuator body, a motor is arranged at one end of the mounting plate; a valve shaft is arranged at the other end of the mounting plate, the top of the valve shaft is connected to one end of a limit block, limit switches are arranged on both sides of the valve shaft and at the top of the mounting plate, and a spring sheet is arranged at the end of the limit switch away from the motor.

[0011] Furthermore, in order to prevent the limit block from directly hitting the limit switch, the spring sheet includes a connecting section arranged at the end of the limit switch away from the motor, a first elastic section is arranged at the end of the connecting section, and a second elastic section is arranged at the end of the first elastic section away from the connecting section; a V-shaped structure is formed between the first elastic section and the second elastic section.

[0012] The beneficial effects of the utility model are:

[0013] (1) The utility model has a simple structure, high installation efficiency, and is easy to replace and maintain. The limit switch will contact the limit block in advance to stop the motor from rotating. The spring structure plays a certain buffering role, avoiding the limit switch being damaged by the high-speed moving limit block directly contacting the limit switch, thereby increasing the service life of the valve actuator.

[0014] (2) By providing the first and second slots, the spring sheet can be stably connected to the limit stopper and drive the spring sheet to move; by providing the spring sheet, a buffering effect can be achieved to prevent the limit stopper from directly hitting the limit switch. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a structural schematic diagram according to the first embodiment of the utility model;

[0017] Figure 2 It is a structural schematic diagram of the limit stopper in the first embodiment of the utility model;

[0018] Figure 3 It is a structural schematic diagram of the spring sheet in the first embodiment of the utility model;

[0019] Figure 4 It is a structural schematic diagram according to the second embodiment of the utility model;

[0020] Figure 5 It is a structural schematic diagram of a spring sheet according to the second embodiment of the utility model.

[0021] In the figure:

[0022] 1. Actuator body; 2. Mounting plate; 3. Motor; 4. Valve shaft; 5. Limit stopper; 6. Limit switch; 7. Spring sheet; 701. Snap-fit ​​section; 702. First elastic section; 703. Second elastic section; 704. Connecting section; 8. First slot; 9. Second slot. DETAILED DESCRIPTION

[0023] To further illustrate each embodiment, the present invention provides drawings, which are part of the disclosure of the present invention and are mainly used to illustrate the embodiments. They can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, ordinary technicians in the field should be able to understand other possible implementation methods and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0024] According to an embodiment of the utility model, a spring limiting mechanism of a high-speed valve actuator is provided. Example

[0025] The present invention is now further described in conjunction with the accompanying drawings and specific implementation methods. Figure 1-3 As shown, the spring limit mechanism of the high-speed valve actuator according to the embodiment of the utility model includes an actuator body 1, a mounting plate 2 is arranged inside the actuator body 1, and a motor 3 is arranged at one end of the mounting plate 2; a valve shaft 4 is arranged at the other end of the mounting plate 2, and the top of the valve shaft 4 is connected to one end of a limit block 5, and limit switches 6 are arranged on both sides of the valve shaft 4 and at the top of the mounting plate 2, and spring sheets 7 are arranged on both sides of the end of the limit block 5 away from the valve shaft 4.

[0026] With the aid of the above scheme, the utility model has a simple structure, high installation efficiency, and is easy to replace and maintain. The limit switch 6 will contact the limit block 5 in advance to stop the motor 3 from rotating. The spring structure plays a certain buffering role, avoiding the high-speed moving limit block 5 from directly contacting the limit switch 6 and damaging the limit switch 6, thereby improving the service life of the valve actuator.

[0027] In one embodiment, for the above-mentioned limit stop block 5, a first card slot 8 is provided inside the limit stop block 5, and a second card slot 9 is provided at one end of the first card slot 8 and located inside the limit stop block 5, and the first card slot 8 is perpendicular to and connected to the second card slot 9, and the second card slot 9 extends from one end of the first card slot 8 to the outside of the limit stop block 5, so that the spring sheet 7 can be stably connected to the limit stop block 5 and drive the spring sheet 7 to move.

[0028] In one embodiment, for the above-mentioned spring sheet 7, the spring sheet 7 includes a clamping section 701 arranged in the first clamping groove 8, a first elastic section 702 connected to the clamping section 701 is arranged in the second clamping groove 9, and a second elastic section 703 is arranged at one end of the first elastic section 702 close to the limit switch 6; a V-shaped structure is formed between the first elastic section 702 and the second elastic section 703, so as to play a buffering role and prevent the limit block 5 from directly hitting the limit switch 6. Example

[0029] like Figure 4-5 As shown, for the spring limit mechanism of the above-mentioned high-speed valve actuator, the spring limit mechanism of the high-speed valve actuator can also adopt the following structure to achieve the advantage of improving the service life of the valve actuator. The spring limit mechanism of the high-speed valve actuator includes an actuator body 1, a mounting plate 2 is arranged inside the actuator body 1, and a motor 3 is arranged at one end of the mounting plate 2; a valve shaft 4 is arranged at the other end of the mounting plate 2, and the top of the valve shaft 4 is connected to one end of the limit stopper 5, and limit switches 6 are arranged on both sides of the valve shaft 4 and at the top of the mounting plate 2, and a spring sheet 7 is arranged at the end of the limit switch 6 away from the motor 3 (that is, installed on the spring sheet of the limit switch 6).

[0030] With the aid of the above scheme, the utility model has a simple structure, high installation efficiency, and is easy to replace and maintain. The limit switch 6 will contact the limit block 5 in advance to stop the motor 3 from rotating. The spring structure plays a certain buffering role, avoiding the high-speed moving limit block 5 from directly contacting the limit switch 6 and damaging the limit switch 6, thereby improving the service life of the valve actuator.

[0031] In one embodiment, for the above-mentioned spring sheet 7, the spring sheet 7 includes a connecting section 704 arranged at the end of the limit switch 6 away from the motor 3, a first elastic section 702 is arranged at the end of the connecting section 704, and a second elastic section 703 is arranged at the end of the first elastic section 702 away from the connecting section 704; a V-shaped structure is formed between the first elastic section 702 and the second elastic section 703, so as to play a buffering role and prevent the limit block 5 from directly hitting the limit switch 6.

[0032] In order to facilitate understanding of the above technical solution of the present invention, the working principle or operation method of the present invention in the actual process is described in detail below.

[0033] In actual application, the motor 3 drives the valve shaft 4 to rotate through a set of gears, thereby opening and closing the valve. The valve is opened and closed at an angle of about 90 degrees. It is positioned by two limit switches 6 on the left and right. The limit stopper 5 is fixed on the valve shaft 4. When the valve rotates, the limit stopper 5 rotates left and right and stops at the limit switch 6, indicating that the valve is opened and closed.

[0034] The spring sheet 7 plays a buffering role, and the spring sheet 7 can be replaced by other spring mechanisms, and is not limited to the spring sheet 7.

[0035] In summary, the utility model has a simple structure, high installation efficiency, and is easy to replace and maintain. The limit switch 6 will contact the limit block 5 in advance to stop the motor 3 from rotating. The spring structure plays a certain buffering role, avoiding the limit block 5 moving at high speed from directly contacting the limit switch 6 and damaging the limit switch 6, thereby improving the service life of the valve actuator. By setting the first card slot 8 and the second card slot 9, the spring sheet 7 can be stably connected to the limit block 5 and drive the spring sheet 7 to move; by setting the spring sheet 7, a buffering effect can be played to prevent the limit block 5 from directly hitting the limit switch 6.

[0036] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0037] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A spring limit mechanism for a high-speed valve actuator, comprising an actuator body (1), characterized in that: A mounting plate (2) is arranged inside the actuator body (1), and a motor (3) is arranged at one end of the mounting plate (2); A valve shaft (4) is arranged at the other end of the mounting plate (2); the top of the valve shaft (4) is connected to one end of a limit stopper (5); limit switches (6) are arranged on both sides of the valve shaft (4) and at the top of the mounting plate (2); and spring sheets (7) are arranged on both sides of an end of the limit stopper (5) away from the valve shaft (4).

2. The spring limiting mechanism of a high-speed valve actuator according to claim 1, characterized in that: A first card slot (8) is provided inside the limit stopper (5), a second card slot (9) is provided at one end of the first card slot (8) and is located inside the limit stopper (5), the first card slot (8) is perpendicular to and connected to the second card slot (9), and an end of the second card slot (9) away from the first card slot (8) extends to the outside of the limit stopper (5).

3. The spring limiting mechanism of a high-speed valve actuator according to claim 2, characterized in that: The spring sheet (7) comprises a clamping section (701) arranged in the first clamping slot (8), a first elastic section (702) connected to the clamping section (701) is arranged in the second clamping slot (9), and a second elastic section (703) is arranged at one end of the first elastic section (702) close to the limit switch (6).

4. The spring limiting mechanism of a high-speed valve actuator according to claim 3, characterized in that: A V-shaped structure is formed between the first elastic section (702) and the second elastic section (703).

5. A spring limit mechanism for a high-speed valve actuator, comprising an actuator body (1), characterized in that: A mounting plate (2) is arranged inside the actuator body (1), and a motor (3) is arranged at one end of the mounting plate (2); A valve shaft (4) is arranged at the other end of the mounting plate (2), the top of the valve shaft (4) is connected to one end of a limit stopper (5), limit switches (6) are arranged on both sides of the valve shaft (4) and at the top of the mounting plate (2), and a spring sheet (7) is arranged at one end of the limit switch (6) away from the motor (3).

6. The spring limiting mechanism of a high-speed valve actuator according to claim 5, characterized in that: The spring sheet (7) comprises a connecting section (704) arranged at an end of the limit switch (6) away from the motor (3), a first elastic section (702) being arranged at the end of the connecting section (704), and a second elastic section (703) being arranged at an end of the first elastic section (702) away from the connecting section (704).

7. The spring limiting mechanism of a high-speed valve actuator according to claim 6, characterized in that: A V-shaped structure is formed between the first elastic section (702) and the second elastic section (703).

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