An anti-clogging forced discharge valve for tubular chain conveying devices

Abstract

An anti-clogging forced discharge valve for a tubular chain conveyor belongs to agricultural machinery. A C-shaped inner tube is rotatably installed within a fixed, inverted, grooved valve body. A C-shaped outer tube is fixedly fitted onto the outside of the inner tube. A C-shaped air passage is provided between the inner and outer tubes. A flexible air inlet pipe connects to the air passage via an air inlet nozzle. A rotating air nozzle is fitted at the lower part of the outer tube. A servo motor is connected to the rotating air nozzle. A stepper motor drives the inner tube to rotate via a drive gear and a driven gear. The automatic controller consists of a button module, a microcontroller, a servo motor drive module, a stepper motor drive module, a voltage linear amplifier, a D / A converter, and a display screen. The pneumatic transmission system includes a pressure sensor, an air compressor, an air tank, a filter, and an electro-proportional valve. This invention achieves air-assisted forced discharge and air-blowing anti-clogging at the discharge point of the tubular chain conveyor, featuring a reasonable structure, stable discharge, thorough discharge, and resistance to clogging.

Description

Technical Field

[0001] This invention belongs to the field of agricultural machinery and mainly relates to an anti-blocking forced discharge valve for tubular chain conveying devices. Background Technology

[0002] In the application of agricultural materials such as solid soil conditioners, granular fertilizers, and organic fertilizers, tubular chain conveyors are often used as material conveying and distribution components of application machinery to transport materials from the hopper to the unloading or discharging point. The continuity and stability of the tubular chain conveyor operation are crucial indicators for evaluating its quality. Continuous and stable material conveying and thorough unloading ensure that materials are transported and discharged under optimal working conditions, thus improving the operational quality and effectiveness of the tubular chain conveyor. However, due to the complex shapes of materials, varying particle sizes, and differences in moisture content, coupled with long conveying distances, complex pipeline structures, and the tendency for residue to accumulate at the unloading outlet, currently used tubular chain conveyors are prone to problems such as conveying blockages, incomplete unloading, unstable discharge, and accumulation of residual material at the outlet. These issues reduce the quality of the tubular chain conveyor operation, hinder the smooth completion of subsequent operations, and ultimately affect the overall conveying effect. Summary of the Invention

[0003] The purpose of this invention is to address the problems existing in the prior art and, in combination with the actual needs of agricultural production operations, to design and provide an anti-blocking forced discharge valve for tubular chain conveying devices, so as to achieve continuous and stable conveying of tubular chain conveying devices, forced discharge at the discharge point, timely removal of residual materials at the outlet, and less clogging during operation.

[0004] The purpose of this invention is achieved as follows: A C-shaped inner tube is rotatably installed in a fixed, inverted slotted valve body. A C-shaped outer tube is fixedly fitted onto the outside of the C-shaped inner tube. A C-shaped air passage is provided between the outer wall of the C-shaped inner tube and the inner wall of the C-shaped outer tube. The outlet end of a flexible air inlet pipe is connected to the C-shaped air passage through an air inlet nozzle. A sealing ring is installed in the lower port of the C-shaped air passage. A rotating air nozzle is rotatably installed in the through hole at the lower part of the C-shaped outer tube. A servo motor shaft, fixed to the outside of the C-shaped inner tube, is coaxially connected to the rotating air nozzle. A stepper motor is fixed to the outer wall of the slotted valve body. A drive gear is fixed to the stepper motor shaft. A driven gear is fixed to the C-shaped inner tube, and the driven gear meshes with the drive gear. A front end cover is rotatably installed on the front side of the slotted valve body. The front end cover is hinged to the slotted valve body, and a locking buckle is installed on the front end cover and the slotted valve body.

[0005] The automatic controller consists of a button module, a microcontroller, a servo motor drive module, a stepper motor drive module, a voltage linear amplifier, a D / A converter, and a display screen. The microcontroller is connected to the button module, the servo motor drive module, the stepper motor drive module, the D / A converter, and the display screen via wires. The wires also connect the servo motor and the stepper motor to the servo motor drive module and the stepper motor drive module, respectively.

[0006] The pneumatic transmission system includes a pressure sensor, an air compressor, an air tank, a filter, and an electro-proportional valve. The electro-proportional valve is connected to the air compressor via the filter and the air tank, the air tank is connected to the pressure sensor, and the electro-proportional valve is connected to the flexible air inlet pipe. The electro-proportional valve of the pneumatic transmission system is connected to the voltage linear amplifier of the automatic controller. In use, this valve is fixed on the unloading part of the tubular chain conveyor, thus forming an anti-clogging forced discharge unloading valve for the tubular chain conveyor.

[0007] This invention employs a structure that utilizes a C-shaped inner tube for circumferential rotation and unloading, a C-shaped airway for pressure-assisted discharge, a rotating air nozzle for reciprocating cleaning and blowing, and an automatic controller for coordinated control. This solves the technical problems of easy clogging and incomplete unloading in existing tubular chain conveying devices during operation. It can control the unloading opening, blowing direction, and air supply pressure in real time according to operational needs, achieving continuous, stable, and complete material discharge. It features a reasonable structure, convenient control, stable discharge, thorough discharge, and good anti-clogging effect. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the overall structure of an anti-clogging forced discharge valve used in a tubular chain conveyor system.

[0009] Figure 2 yes Figure 1 Sectional view along line A-A;

[0010] Figure 3 This is a schematic diagram of the rotating air nozzle structure;

[0011] Figure 4 yes Figure 3 Sectional view along line B-B;

[0012] Figure 5 This is a schematic diagram of the installation state of an anti-clogging forced discharge valve for a tubular chain conveying device and the conveying pipeline of the tubular chain conveying device.

[0013] Part number description in the image:

[0014] 1. Grooved valve body; 2. Stepper motor; 3. Drive gear; 4. Driven gear; 5. C-shaped inner tube; 6. Rotary air nozzle; 7. Servo motor; 8. C-shaped outer tube; 9. Flexible air inlet pipe; 10. Air inlet; 11. Sealing ring; 12. Pneumatic transmission system; 12-1. Air pressure sensor; 12-2. Air compressor; 12-3. Air tank; 12-4. Filter; 12-5. Electro-proportional valve; 13. Automatic controller; 13-1. Voltage linear amplifier; 13-2. Button module; 13-3. D / A converter; 13-4. Display screen; 13-5. Microcontroller; 13-6. Servo motor drive module; 13-7. Stepper motor drive module; 14. Front cover; 15. Locking buckle; 16. Circular chain; 17. Scraper; 18. Connecting pipe. Detailed Implementation

[0015] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. A clog-resistant, forced-discharge valve for a tubular chain conveyor includes a C-shaped inner tube 5 rotatably mounted within a fixed, inverted, grooved valve body 1. A C-shaped outer tube 8 is fixedly fitted onto the outside of the C-shaped inner tube 5. A C-shaped air passage is provided between the outer wall of the C-shaped inner tube 5 and the inner wall of the C-shaped outer tube 8. The outlet end of a flexible air inlet pipe 9 communicates with the C-shaped air passage via an air inlet nozzle 10. A sealing ring 11 is installed in the lower port of the C-shaped air passage. A rotating air nozzle 6 is rotatably mounted in the through hole at the lower part of the C-shaped outer tube 8. The servo motor 7, mounted on the outside of the C-shaped inner tube 5, is coaxially connected to the rotating air nozzle 6. The stepper motor 2 is fixedly mounted on the outer wall of the side wall of the slotted valve body 1. The drive gear 3 is fixedly mounted on the motor shaft of the stepper motor 2. The driven gear 4 is fixedly mounted on the C-shaped inner tube 5. The driven gear 4 meshes with the drive gear 3. The front end cover 14 is closable and mounted on the front side of the slotted valve body 1. The front end cover 14 is hinged to the slotted valve body 1, and a locking buckle 15 is installed on the front end cover 14 and the slotted valve body 1.

[0016] The automatic controller 13 consists of a voltage linear amplifier 13-1, a button module 13-2, a D / A converter 13-3, a display screen 13-4, a microcontroller 13-5, a servo motor drive module 13-6, and a stepper motor drive module 13-7. The microcontroller 13-5 is connected to the button module 13-2, the servo motor drive module 13-6, the stepper motor drive module 13-7, the D / A converter 13-3, and the display screen 13-4 via wires. The servo motor 7 and the stepper motor 2 are connected to the servo motor drive module 13-6 and the stepper motor drive module 13-7, respectively, via wires.

[0017] The pneumatic transmission system 12 includes a pressure sensor 12-1, an air compressor 12-2, an air tank 12-3, a filter 12-4, and an electro-proportional valve 12-5. The electro-proportional valve 12-5 is connected to the air compressor 12-2 in sequence through the filter 12-4 and the air tank 12-3. The air tank 12-3 is connected to the pressure sensor 12-1. The electro-proportional valve 12-5 is connected to the flexible air inlet pipe 9. The electro-proportional valve 12-5 of the pneumatic transmission system 12 is connected to the voltage linear amplifier 13-1 of the automatic controller 13. Thus, it constitutes an anti-blocking forced discharge valve for a tubular chain conveying device.

[0018] In use, the anti-blocking forced discharge valve is fixed on the discharge part of the tubular chain conveyor, and the front cover 14 is closed on the front side of the trough valve body 1 and locked and fixed by the locking buckle 15. The circumferentially rotatable C-shaped inner tube 5 is connected to the conveying pipeline of the tubular chain conveyor through the connecting pipe 18 of the tubular chain conveyor. The ring chain 16 of the tubular chain conveyor drives the scraper 17 to run through the cavity of the connecting pipe 18 and the C-shaped inner tube 5. The ring chain 16, the scraper 17 and the connecting pipe 18 are all components of the tubular chain conveyor. Before operation, based on the material conveying capacity and unloading requirements of the tubular chain conveyor, the operation parameters are input through the button module 13-2 of the automatic controller 13. The microcontroller 13-5 outputs pulse signals through the stepper motor drive module 13-7 according to the input parameters, driving the stepper motor 2 to rotate. The stepper motor 2 drives the C-shaped inner tube 5 to rotate through the meshing transmission of the drive gear 3 and the driven gear 4, so that the opening of the C-shaped inner tube 5 is rotated to the set angle to complete the unloading opening adjustment. At the same time, the microcontroller 13-5 outputs control signals to the electro-proportional valve 12-5 through the D / A converter 13-3 and the voltage linear amplifier 13-1 to adjust the airflow into the flexible air inlet pipe 9. The display screen 13-4 displays the operation setting parameters and working status.

[0019] During operation, the tubular chain conveyor transports the material into the cavity of the C-shaped inner tube 5. Under the set opening angle of the C-shaped inner tube 5 and the force of gravity, the material is discharged from the lower opening of the fixed inverted trough valve body 1. At this time, the pressurized airflow generated by the air compressor 12-2 passes sequentially through the air tank 12-3, filter 12-4, electro-proportional valve 12-5, flexible air inlet pipe 9, and air inlet nozzle 10 into the C-shaped air passage between the C-shaped inner tube 5 and the C-shaped outer tube 8. The upper end of the C-shaped air passage is guided by the end of the C-shaped outer tube 8 to the lower end of the C-shaped inner tube 5, allowing the material to be discharged smoothly and removing residual material at the outlet. Simultaneously, the rotating air nozzle 6 blows towards the discharge outlet, providing air-assisted forced discharge of the discharged material. After being controlled by the servo motor drive module 13-6, the servo motor 7 drives the rotating air nozzle 6 to oscillate back and forth in the circumferential direction within the through hole at the lower part of the C-shaped outer tube 8, so that the pressurized airflow continuously acts on the unloading outlet and the inner wall of the grooved valve body 1, clearing the residual material at the outlet and preventing the material from accumulating and clogging at the unloading part.

Claims

1. A blockage-resistant forced discharge valve for a tubular chain conveyor, characterized in that: A C-shaped inner tube (5) is rotatably installed inside a fixed inverted slotted valve body (1). A C-shaped outer tube (8) is fixedly fitted onto the outside of the C-shaped inner tube (5). A C-shaped air passage is provided between the outer wall of the C-shaped inner tube (5) and the inner wall of the C-shaped outer tube (8). The outlet end of the flexible air inlet pipe (9) is connected to the C-shaped air passage through an air inlet nozzle (10). A sealing ring (11) is installed in the lower port of the C-shaped air passage. A rotating air nozzle (6) is installed in the through hole at the lower part of the C-shaped outer tube (8) and can reciprocate circumferentially. A servo motor is fixed on the outside of the C-shaped inner tube (5). The motor shaft of the machine (7) is coaxially connected with the rotating air nozzle (6). The stepper motor (2) is fixed on the outer wall of the side wall of the slotted valve body (1). The driving gear (3) is fixed on the motor shaft of the stepper motor (2). The driven gear (4) is fixed on the C-shaped inner tube (5). The driven gear (4) meshes with the driving gear (3). The front end cover (14) is installed on the front side of the slotted valve body (1) in an openable and closable manner. The front end cover (14) is hinged to the slotted valve body (1). Locking buckles (15) are installed on the front end cover (14) and the slotted valve body (1).

2. The anti-blocking forced discharge valve for a tubular chain conveying device according to claim 1, characterized in that: The automatic controller (13) consists of a button module (13-2), a microcontroller (13-5), a servo motor drive module (13-6), a stepper motor drive module (13-7), a voltage linear amplifier (13-1), a D / A converter (13-3), and a display screen (13-4). The microcontroller (13-5) is connected to the button module (13-2), the servo motor drive module (13-6), the stepper motor drive module (13-7), the D / A converter (13-3), and the display screen (13-4) via wires. The servo motor (7) and the stepper motor (2) are connected to the servo motor drive module (13-6) and the stepper motor drive module (13-7) via wires.

3. The anti-blocking forced discharge valve for a tubular chain conveying device according to claim 1, characterized in that: The pneumatic transmission system (12) includes a pressure sensor (12-1), an air compressor (12-2), an air tank (12-3), a filter (12-4), and an electro-proportional valve (12-5). The electro-proportional valve (12-5) is connected to the air compressor (12-2) in sequence through the filter (12-4) and the air tank (12-3). The air tank (12-3) is connected to the pressure sensor (12-1). The electro-proportional valve (12-5) is connected to the flexible air inlet pipe (9). The electro-proportional valve (12-5) of the pneumatic transmission system (12) is connected to the voltage linear amplifier (13-1) of the automatic controller (13).

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