Full-automatic aperture valve with torsion compensation function

Abstract

According to the full-automatic diaphragm valve with the torsion compensation function, through the improved design of a valve plate driving mode, torsion compensation can be carried out under the conditions that parts deform and valve cloth is loosened when the diaphragm valve is used for a long time, namely, the number of rotation turns of a gear is increased, and the rotation path distance of the valve plate is increased through accurate tooth number calculation; therefore, under the controllable condition, the twisting degree of the valve cloth is properly increased, and the valve cloth can still adaptively compensate torsion under the condition of deformation of parts, so that the effect of complete sealing is achieved, and the problem of powder leakage loss is avoided.

Description

Technical Field

[0001] This utility model relates to the field of aperture valve technology, specifically to a torque-compensated fully automatic aperture valve. Background Technology

[0002] Aperture valves, also known as diaphragm valves, feature direct flow and a smooth, unobstructed orifice, facilitating unrestricted material flow. Flow control is centrally located within the valve and is used for bag feeding, with a preset, quick-locking position. Aperture valves are primarily used for controlling powder feeding; by tightening or loosening the bag opening, the feeding can be controlled to open or close, and the flow rate can also be controlled. They serve as a quantitative discharge control valve and a fragment-proof sealing valve for easily trapped or fragile materials.

[0003] The existing related technology of the aperture valve includes a valve plate, a rotating connecting plate, a top cover, a flange, a crank, a guide wheel, and a rotating disk. The top cover is connected to the flange by bolts, the guide wheel is fixed to the flange, the valve plate and the rotating disk are fixed together, the valve plate slides on the guide wheel, and the rotating disk is connected to the crank through the rotating connecting plate.

[0004] In existing technologies, the sliding position of the valve plate on the guide wheel is often controlled by pneumatic or manual means, thereby controlling the opening and closing angles of the rotating disk, rotating connecting disk, and crank.

[0005] Pneumatics is usually controlled by cylinders. The problem with pneumatic control is that the cylinder stroke is fixed. When the opening and closing angle needs to be adjusted, the adjustment is very troublesome due to the cylinder structure. In addition, the closed-loop control of the cylinder signal is not accurate, making it difficult to control the valve opening angle and speed.

[0006] The problem with manual control is that the aperture valve is usually used at the coating inlet, which is installed at a relatively high position. Personnel need to use ladders or other facilities to operate it, making installation and use inconvenient.

[0007] Moreover, after prolonged use, the aperture valve may become loose due to component deformation, resulting in powder leakage and loss even when the aperture valve is closed.

[0008] Therefore, it is necessary to improve the existing drive structure of the aperture valve to achieve high-precision closed-loop control, facilitate the control of valve opening speed, and provide real-time torque compensation for valve cloth slack. Depending on the working conditions, further torque can be applied to the closed valve cloth to ensure that the closed valve cloth is sealed and there is no powder leakage. Utility Model Content

[0009] To address the shortcomings of the aforementioned technologies, this invention provides a torque-compensated fully automatic aperture valve.

[0010] The technical solution of this utility model is as follows: A torque-compensated fully automatic aperture valve includes a valve plate, a rotating connecting piece, a top cover, a flange, a crank, a guide wheel, and a rotating disk. The guide wheel is fixed to the flange, and the valve plate and the rotating disk are fixedly connected. The valve plate slides on the guide wheel, and the rotating disk is connected to the crank through the rotating connecting piece. It also includes an arc-shaped gear ring, a gear, and a drive motor. The arc-shaped gear ring is arranged concentrically with the flange and is fixed on the outer circumference of the flange. A motor connecting seat is provided at the end of the valve plate away from the flange. The drive motor is fixedly connected to the motor connecting seat, and its output shaft is coaxially linked with the gear. The gear meshes with the arc-shaped gear and drives the valve plate to rotate to the open or closed position of the aperture valve along the arc-shaped gear.

[0011] By employing the above technical solution, the path constraint of the arc-shaped gear ring, combined with the forward and reverse drive of the drive motor, guides the gear along its path to form a trajectory that rotates the valve plate to the open and closed positions of the aperture valve. Under this design, manual control of the flapper is unnecessary. Instead, the required number of motor revolutions for the valve plate's rotation angle is preset using a PLC controller or other controller for automated control. Compared to the difficult-to-adjust stroke of a cylinder, this application utilizes the more precise and controllable connection method of gear meshing for drive.

[0012] Meanwhile, this driving method can compensate for torque when the components of the aperture valve deform or the valve cloth loosens after long-term use. This is achieved by increasing the number of gear rotations and calculating the number of teeth precisely to increase the rotation path distance of the valve plate. Under controllable conditions, this moderately increases the degree of twisting of the valve cloth, allowing it to adaptively compensate for torque even when the components are deformed, thus achieving a completely sealed effect and avoiding powder leakage.

[0013] A further feature of this invention is that the arc-shaped gear ring is provided with a detection piece B and a detection piece A in the open and closed positions, respectively. A proximity switch is provided on the motor connector. The drive motor starts and stops in conjunction with the signal from the proximity switch as it moves with the motor connector to contact the detection piece B or the detection piece A.

[0014] By adopting the above technical solution, by setting detection piece B and detection piece A in the open and closed positions respectively, when the motor connecting seat moves with the valve plate to the designated position, the contact switch triggers a signal to control the start and stop of the drive motor.

[0015] A further feature of this invention is that, in the closed position, the arc-shaped toothed ring is provided with an arc-shaped elongated groove, and the detection piece A is provided with a positioning screw hole that matches the arc-shaped elongated groove, and is fixed to the arc-shaped elongated groove by a wing screw.

[0016] Using the above technical solution, in the case of deformation of the aperture valve, after the deformed valve cloth loosens, the original closing position is no longer accurate. The staff can recalculate the closing position required for the valve cloth to be completely sealed according to the current working conditions, and adjust the position of the detection piece A by using the displacement of the screw on the arc-shaped long groove, thereby correcting the triggering timing of the contact switch.

[0017] A further feature of this invention is as follows: the outer circumferential surface of the flange is provided with a connecting flange, the connecting flange is provided with a first screw hole, the arc-shaped toothed ring is provided with an overlapping groove adapted to the contour of the connecting flange, the overlapping groove is provided with a screw countersunk hole corresponding to the position of the first screw hole, the arc-shaped toothed ring and the connecting flange are fixedly connected by screws, and the radially outer end face of the arc-shaped toothed ring is provided with several teeth.

[0018] Using the above technical solution, the arc-shaped gear ring and gears are made of high-strength nylon to reduce weight, and are fixedly connected by screws for easy replacement of parts.

[0019] A further feature of this invention is that the drive motor is a stepper brake motor, and the motor connector is provided with a motor cover that covers the stepper brake side motor.

[0020] By adopting the above technical solution and using a servo or stepper motor, a high-precision closed-loop control is provided, and the valve opening speed can be controlled by any curve. This application prefers a stepper brake motor.

[0021] The beneficial effects of this application are as follows: This application introduces a new design for the valve plate drive method. A high-strength nylon gear ring is screwed onto the valve body, and the valve plate is replaced with a reducer bracket for mounting a high-precision motor. The motor is equipped with a nylon gear that matches the gear ring. By driving the gear to rotate through the motor, and since the gear ring is fixed, the valve plate will rotate, and the cloth bag will twist, thereby forming a ring shape and sealing it. Attached Figure Description

[0022] Figure 1 The structure of this utility model embodiment Figure 1 ;

[0023] Figure 2 for Figure 1 Enlarged view of a portion of point A in the middle;

[0024] Figure 3 The structure of this utility model embodiment Figure 2 .

[0025] The labels in the attached diagram are as follows: 1-valve plate, 11-motor connector, 2-flange, 21-connecting flange, 3-arc gear ring, 31-arc elongated groove, 4-gear, 5-drive motor, 51-motor cover, 6-detection piece B, 7-detection piece A, 8-proximity switch.

[0026] To better illustrate this embodiment, some parts in the accompanying drawings may be omitted, enlarged, or reduced, and do not represent the actual size of the product. Furthermore, the accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. Detailed Implementation

[0027] To make the technical solution and advantages of this application clearer, the technical solution of this application will be described in a clearer and more complete manner below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some embodiments of this application, and are only used to explain this application, not to limit this application. It should be noted that, for ease of description, only the parts related to this application are shown in the accompanying drawings. Other related parts can be referred to the general design. In the absence of conflict, the embodiments and technical features in the embodiments of this application can be combined with each other to obtain new embodiments.

[0028] The following is a detailed description of the infeed of this utility model with reference to the accompanying drawings, such as... Figure 1-3 As shown, a torque-compensated fully automatic aperture valve includes a valve plate 1, a rotating connecting piece, a top cover, a flange 2, a crank rod, a guide wheel, and a rotating disk. The guide wheel is fixed to the flange 2. The valve plate 1 and the rotating disk are fixedly connected, and the valve plate 1 slides on the guide wheel. The rotating disk is connected to the crank rod through the rotating connecting piece. The valve plate also includes an arc-shaped gear ring 3, a gear 4, and a drive motor 5. The arc-shaped gear ring 3 is concentrically arranged with the flange 2 and fixed to the outer circumference of the flange 2. A motor connecting seat 11 is provided at the end of the valve plate 1 away from the flange 2. The drive motor 5 is fixedly connected to the motor connecting seat 11, and its output shaft is coaxially linked with the gear 4. The gear 4 meshes with the arc-shaped gear 4 and drives the valve plate 1 to rotate to the open or closed position of the aperture valve along the arc-shaped gear 4.

[0029] By constraining the path of the arc-shaped gear ring 3 and coordinating with the forward and reverse drive of the drive motor 5, the gear 4 is guided along its path to form a trajectory that drives the valve plate 1 (valve plate 1) to rotate to the open and closed positions of the aperture valve. With this design, there is no need for manual control of the flapper; instead, the required number of motor rotations for the valve plate 1's rotation angle is preset using a PLC controller or other controller for automated control. Compared to the difficult-to-adjust stroke of a cylinder, this application utilizes the more precise and controllable connection method of gear 4 meshing for drive.

[0030] Meanwhile, using this driving method, when the components of the aperture valve deform after long-term use and the valve cloth becomes loose, torque compensation can be performed. That is, the number of rotations of gear 4 is increased. Through precise tooth count calculation, the rotation path distance of valve plate 1 is increased. Thus, under controllable conditions, the degree of twisting of valve cloth is moderately increased, so that even under the condition of component deformation, it can still adaptively compensate for torque, thereby achieving a completely sealed effect and avoiding the problem of powder leakage and loss.

[0031] The arc-shaped gear ring is equipped with a detection piece B6 and a detection piece A7 in the open and closed positions, respectively. A proximity switch 8 is provided on the motor connector 11. The drive motor 5 starts and stops in conjunction with the signal from the proximity switch 8 as it moves with the motor connector 11 to contact the detection piece B6 or the detection piece A7.

[0032] By setting detection plates B6 and A7 in the open and closed positions respectively, when the motor connecting seat 11 moves with the valve plate 1 to the designated position, the contact switch triggers a signal to control the start and stop of the drive motor 5.

[0033] The arc-shaped toothed ring 3 is provided with an arc-shaped elongated groove 31 in the closed position. The detection piece A7 is provided with a positioning screw hole that matches the arc-shaped elongated groove 31 and is fixed to the arc-shaped elongated groove 31 by a wing screw.

[0034] In response to the deformation of the aperture valve, after the deformed valve cloth loosens, the original closing position is no longer accurate. The staff can recalculate the closing position required for the valve cloth to be completely sealed according to the current working conditions. By using the displacement of the screw on the arc-shaped elongated groove 31, the position of the detection piece A7 is adjusted, thereby correcting the triggering timing of the contact switch.

[0035] The flange 2 has a connecting flange 21 on its outer circumferential surface. The connecting flange 21 has a first screw hole. The arc-shaped toothed ring 3 has an overlapping groove that matches the contour of the connecting flange 21. The overlapping groove has a countersunk hole for screws at the position corresponding to the first screw hole. The arc-shaped toothed ring and the connecting flange 21 are fixedly connected by screws. The radially outer end face of the arc-shaped toothed ring 3 has several teeth.

[0036] The arc-shaped gear ring 3 and gear 4 are made of high-strength nylon to reduce weight, and are fixedly connected by screws for easy replacement of parts.

[0037] The drive motor 5 is a stepper brake motor, and the motor connector 11 is provided with a motor cover 51 that covers the stepper brake side motor.

[0038] By employing a servo or stepper motor, a high-precision closed-loop control is provided, allowing for arbitrary curve control of the valve opening speed. This application preferably uses a stepper brake motor.

[0039] This application introduces a new design for the driving method of valve plate 1. A high-strength nylon gear ring is screwed onto the valve body, and the valve plate 1 is replaced with a reducer bracket for mounting a high-precision motor. The motor is equipped with a nylon gear 4, which matches the gear ring. By driving the rotation of the gear 4 through the motor, and since the gear ring is fixed, the valve plate 1 will rotate, and the cloth bag will twist, thereby forming a ring shape and sealing it.

[0040] It is understood that, for those skilled in the art, any equivalent substitutions or modifications to the technical solutions and inventive concepts of this utility model should fall within the protection scope of the appended claims.

Claims

1. A torque-compensated fully automatic aperture valve, comprising a valve plate, a rotating connecting piece, a top cover, a flange, a crank, a guide wheel, and a rotating disk, wherein the guide wheel is fixed to the flange, the valve plate and the rotating disk are fixedly connected, the valve plate slides on the guide wheel, and the rotating disk is connected to the crank through the rotating connecting piece, characterized in that: It also includes an arc-shaped gear ring, a gear, and a drive motor. The arc-shaped gear ring is arranged concentrically with the flange and fixed on the outer circumference of the flange. A motor connection seat is provided at the end of the valve plate away from the flange. The drive motor is fixedly connected to the motor connection seat, and its output shaft is coaxially linked with the gear. The gear meshes with the arc-shaped gear and drives the valve plate to rotate to the open or closed position of the aperture valve along the arc-shaped gear.

2. The torque-compensated fully automatic aperture valve according to claim 1, characterized in that: The arc-shaped gear ring is equipped with a detection piece B and a detection piece A in the open and closed positions, respectively. A proximity switch is provided on the motor connector. The drive motor starts and stops in conjunction with the signal from the proximity switch as it moves with the motor connector to contact the detection piece B or the detection piece A.

3. The torque-compensated fully automatic aperture valve according to claim 2, characterized in that: When the arc-shaped toothed ring is in the closed position, it is provided with an arc-shaped elongated groove. The detection piece A is provided with a positioning screw hole that matches the arc-shaped elongated groove and is fixed to the arc-shaped elongated groove by a wing screw.

4. A torque-compensated fully automatic aperture valve according to any one of claims 1-3, characterized in that: The flange has a connecting flange on its outer circumferential surface, and the connecting flange has a first screw hole. The arc-shaped toothed ring has an overlapping groove that matches the contour of the connecting flange. The overlapping groove has a countersunk hole for screws at the position corresponding to the first screw hole. The arc-shaped toothed ring and the connecting flange are fixedly connected by screws. The outer radial end face of the arc-shaped toothed ring has several teeth.

5. The torque-compensated fully automatic aperture valve according to claim 4, characterized in that: The drive motor is a stepper brake motor, and the motor connector is provided with a motor cover that covers the stepper brake side motor.

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