Multi-channel grain counter

Abstract

The application provides a multi-channel grain counter, belonging to the technical field of grain counters. The multi-channel grain counter comprises a grain counter, a discharging mechanism and a waste residue guiding assembly; a feed bin is installed at the front end of the grain counter; a discharging port is formed in the bottom of the feed bin; a roller is rotatably installed at the discharging port; a material pushing plate is fixed to the surface of the roller; the driving shaft of a motor is in transmission connection with the roller; screening holes are formed in the surface of the roller; one end of a guide plate is suspended in the roller; the other end of the guide plate extends to the outside of the roller; and a vibration motor is fixedly connected with the guide plate. The screening holes in the bottom of the roller feeding groove cooperate with the vibration guide plate to improve the screening efficiency of the crushed grains; the crushed grains are separated from the qualified materials, so that the material loss rate and the rework rate are reduced. The screening removes impurities, improves the grain counting accuracy, reduces the material loss, and solves the problems of the traditional grain counter, such as crushed grain interference, poor accuracy and high loss.

Description

Technical Field

[0001] This application relates to the field of pellet counters, and more specifically, to a multi-channel pellet counter. Background Technology

[0002] Currently, granule counters are "counting magic tools" in industries such as pharmaceuticals, food, and agriculture. They can accurately count and quantitatively dispense granular materials at a speed of hundreds of granules per second. They are high-tech pharmaceutical counting and filling equipment that integrates optoelectronics. Multi-channel granule counters transform the slow counting of a single channel into simultaneous counting of multiple channels, directly doubling the efficiency.

[0003] The existing technical solutions mentioned above have the following drawbacks: traditional particle counting machines lack an efficient pre-treatment screening structure. Particles in the material are mixed with qualified materials and enter the counting channel. Particles can easily trigger the counting sensor to miscount, resulting in a large deviation in counting accuracy for each batch. Utility Model Content

[0004] To overcome the above shortcomings, this application provides a multi-channel pellet counter, which aims to improve the existing pellet counters that mostly adopt a direct feeding mode using a vibrating feeder. The feeding speed depends on the single adjustment of the vibration frequency, which "cannot match the counting speed of the counting module, resulting in asynchronous feeding and counting, material accumulation or interruption, and low counting efficiency."

[0005] This application provides a multi-channel pellet counter, including a pellet counter, a discharge mechanism, and a waste guide assembly;

[0006] The front end of the counting machine is equipped with a hopper, and the bottom of the hopper has a discharge port, which is connected to the vibrating feeder of the counting machine. The discharge mechanism includes a roller, a pusher plate and a motor. The roller is rotatably installed at the discharge port, the pusher plate is fixed on the surface of the roller, and the drive shaft of the motor is connected to the roller.

[0007] The waste slag guiding assembly includes a guide plate and a vibration motor. The surface of the drum is provided with screening holes. One end of the guide plate is suspended inside the drum, and the other end of the guide plate extends to the outside of the drum. The vibration motor is fixedly connected to the guide plate.

[0008] The system uses a PLC controller and touch screen to preset parameters, monitor status, and alarm for faults (such as low material level or insufficient negative pressure). New employees can operate the system independently after 30 minutes of training, which lowers the operating threshold and reduces labor costs.

[0009] In a preferred embodiment of this utility model, multiple pusher plates are provided, and the multiple pusher plates are distributed in a ring at equal intervals on the surface of the roller. A feeding trough is formed between two adjacent pusher plates, and the screening hole is provided at the bottom of the feeding trough.

[0010] In a preferred embodiment of this utility model, the motor is fixedly connected to the counting machine, a rotating shaft is coaxially fixed to one end of the roller, a reduction gearbox is fixed to the outer wall of the hopper, one end of the rotating shaft is fixed to the output shaft of the reduction gearbox, and the drive shaft of the motor is fixed to the input shaft of the reduction gearbox.

[0011] In a preferred embodiment of this utility model, a worm gear and a worm are rotatably mounted inside the gearbox. The worm gear is coaxially fixed to the rotating shaft, and the worm is coaxially fixed to the drive shaft of the motor. The worm gear meshes with the worm.

[0012] In a preferred embodiment of this utility model, the guide plate is inclined outward from the inside of the roller, one end of the guide plate is detachably snapped into the support frame, and the lower end of the support frame is fixed to the counting machine.

[0013] In a preferred embodiment of this utility model, the vibration motor is fixed to the upper end of the support frame, and a slag discharge hopper is fixed to the upper end of the support frame, the slag discharge hopper receiving the end of the guide plate.

[0014] In a preferred embodiment of this utility model, a negative pressure pump is fixedly installed in the silo, the air outlet of the negative pressure pump is connected to a guide pipe, one end of the guide pipe extends into the drum, and a removable filter bag is fitted onto the air outlet of the negative pressure pump.

[0015] In a preferred embodiment of this invention, a frame is installed at the bottom of the counting machine. A shock-absorbing mechanism is provided between the upper end of the frame and the lower surface of the counting machine. The shock-absorbing mechanism includes a shock-absorbing spring and a damper. The upper end of the damper is connected to the bottom of the counting machine, and the lower end of the damper is connected to the frame. The upper end of the shock-absorbing spring is connected to the lower surface of the counting machine, and the lower end of the shock-absorbing spring is connected to the frame. The shock-absorbing mechanism between the frame and the machine body absorbs more than 90% of the vibration, reduces the detection error of the counting sensor by 30%, and extends the life of transmission components (gears, bearings) from 2 years to 5 years. The operating noise of the equipment is reduced from the traditional 75dB to below 60dB, meeting the environmental protection standards of the workshop. Vibration isolation protection solves the problems of vibration interference, short life, and expensive maintenance of traditional counting machines.

[0016] Beneficial effects:

[0017] 1. The screening holes at the bottom of the drum feed trough, combined with the vibrating guide plate, improve the screening efficiency of broken particles, reduce the miscounting rate of the counting channel, and improve the counting accuracy; the separation of broken particles from qualified materials reduces material loss and rework rates, saving costs. Screening and impurity removal improve counting accuracy and reduce material loss, solving the problems of broken particle interference, poor accuracy, and high loss in traditional particle counters;

[0018] 2. A servo motor, in conjunction with a worm gear reducer, achieves dynamic matching between the drum speed and the counting speed, resulting in minimal synchronization error and significantly reduced feeding accumulation and interruption rates. Multi-channel parallel operation further enhances efficiency, making it suitable for mass production needs in the pharmaceutical and food industries. This solves the problems of asynchronous feeding and low efficiency in traditional pellet counters. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a three-dimensional structural diagram of the multi-channel grain counter provided in the embodiments of this application;

[0021] Figure 2 A second-view perspective three-dimensional structural diagram provided for embodiments of this application;

[0022] Figure 3 A three-dimensional structural diagram of the material discharge mechanism provided for the embodiments of this application;

[0023] Figure 4 A three-dimensional structural diagram of the waste slag guiding component provided in the embodiments of this application.

[0024] In the diagram: 100, Counting machine; 110, Hopper; 130, Frame; 300, Discharge mechanism; 310, Drum; 311, Screening hole; 330, Pusher plate; 350, Motor; 500, Waste slag guiding assembly; 510, Guide plate; 530, Vibration motor; 550, Support frame; 551, Slag discharge hopper; 570, Negative pressure pump. Detailed Implementation

[0025] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0026] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0027] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings.

[0028] Please see Figures 1-4 This utility model provides a multi-channel pellet counter, including a pellet counter 100, a discharge mechanism 300, and a waste slag guiding component 500;

[0029] The counting machine 100 has a hopper 110 installed at the front end, and a discharge port is opened at the bottom of the hopper 110. The discharge port is connected to the vibrating feeder of the counting machine 100. The counting machine 100 adopts a fully enclosed stainless steel body and has 4-8 sets of counting channels (channel diameter 5-20mm adjustable to adapt to different particle sizes). Each set of channels is equipped with a high-precision photoelectric sensor (model KeyenceIV2, detection speed 500 frames / second, accuracy ±1 particle / 1000 particles). The bottom frame 130 is welded from Q235 steel (load capacity ≥200kg). The shock absorption mechanism between the frame 130 and the body (shock absorption spring stiffness 50N / mm, damper damping coefficient 100N・s / m) can absorb more than 90% of the vibration energy (amplitude ≤0.2mm) to ensure the stable operation of the counting sensor. The hopper 110 is injection molded from food-grade PP material, with a bottom discharge port diameter of 100mm, which is precisely connected to the roller 310. A material level sensor (model E2E-X10ME1) is installed on the outer wall of the hopper 110 to monitor the material level in real time. It will automatically alarm when the material level is low to avoid supply interruption.

[0030] The discharge mechanism 300 includes a roller 310, a pusher plate 330, and a motor 350. The roller 310 is rotatably mounted at the discharge port, the pusher plate 330 is fixed on the surface of the roller 310, and the drive shaft of the motor 350 is connected to the roller 310 for transmission.

[0031] The roller 310 is machined from 45# steel (120mm in diameter, 300mm in length, and polished to Ra≤0.8μm). Eight pusher plates 330 (stainless steel, 3mm thick, and 20mm high) are welded at equal intervals along the circumference of the surface. Adjacent pusher plates 330 form four independent feeding troughs (10mL in volume, suitable for the number of particles per batch). Screening holes 311 (2-5mm in diameter, 3mm in diameter for capsule materials) are opened at the bottom of the feeding troughs to accurately screen broken particles (particle passing rate ≥95%).

[0032] Motor 350 is a servo motor (Panasonic A6 model, power 0.75kW, speed adjustable from 0-100r / min), which drives the shaft of roller 310 to rotate through a worm gear reducer (transmission ratio 20:1, self-locking torque ≥50N・m); the worm gear in the reducer is made of 20CrMnTi material (carburized and quenched HRC58-62), with a transmission efficiency ≥90%, and the speed of roller 310 can be precisely controlled by the servo motor (speed accuracy ±0.1r / min), so as to achieve dynamic matching between feeding speed and counting speed.

[0033] The waste slag guiding assembly 500 includes a guide plate 510 and a vibrating motor 530. Screening holes 311 are provided on the surface of the drum 310. One end of the guide plate 510 is suspended inside the drum 310, and the other end extends to the outside of the drum 310. The vibrating motor 530 is fixedly connected to the guide plate 510. The guide plate 510 is made of stainless steel (2mm thick, 400mm long, 30° inclination angle), with one end suspended inside the drum 310 (5mm from the inner wall of the drum 310), and the other end resting above the slag discharge hopper 551. The vibrating motor 530 (model MVE200, vibration frequency 50Hz, amplitude 0.5mm) is fixed to the upper end of the support frame 550. Vibration causes the particles on the guide plate 510 to slide down rapidly (sliding speed 1.2m / s, no accumulation). The slag discharge hopper 551 is made of PP material (5L volume) for easy collection and centralized processing.

[0034] In a specific embodiment of this utility model, multiple pusher plates 330 are provided, and the multiple pusher plates 330 are evenly spaced and distributed in a ring on the surface of the roller 310. A feeding groove is formed between two adjacent pusher plates 330, and the screening hole 311 is provided at the bottom of the feeding groove.

[0035] In a specific embodiment of this utility model, the motor 350 is fixedly connected to the counting machine 100, a rotating shaft is coaxially fixed to one end of the roller 310, a reduction gearbox is fixed to the outer wall of the hopper 110, one end of the rotating shaft is fixed to the output shaft of the reduction gearbox, and the drive shaft of the motor 350 is fixed to the input shaft of the reduction gearbox.

[0036] In a specific embodiment of this utility model, a worm gear and a worm are rotatably installed inside the gearbox. The worm gear is coaxially fixed with the rotating shaft, and the worm is coaxially fixed with the drive shaft of the motor 350. The worm gear meshes with the worm.

[0037] In a specific embodiment of this utility model, the guide plate 510 is inclined outward from the inside of the roller 310, and one end of the guide plate 510 is detachably snapped into the support frame 550. The lower end of the support frame 550 is fixed to the counting machine 100.

[0038] In a specific embodiment of this utility model, the vibration motor 530 is fixed to the upper end of the support frame 550, and a slag discharge hopper 551 is fixed to the upper end of the support frame 550. The slag discharge hopper 551 receives the end of the guide plate 510.

[0039] In a specific embodiment of this utility model, a negative pressure pump 570 is fixedly installed in the hopper 110. The exhaust port of the negative pressure pump 570 is connected to a guide pipe, one end of which extends into the drum 310. A removable filter bag is fitted over the exhaust port of the negative pressure pump 570. The negative pressure pump 570 (model VAY8828, vacuum degree -0.08MPa, pumping speed 80L / min) is fixed to the side wall of the hopper 110. One end of the guide pipe (PU material, diameter 20mm) extends into the drum 310 (5mm from the feeding trough), and the other end is connected to the exhaust port of the negative pressure pump 570. The exhaust port of the negative pressure pump 570 is fitted with a filter bag (filtration accuracy 10μm, reusable, service life ≥50 times), which can collect dust generated during material conveying (dust collection rate ≥95%), preventing pollution of equipment and the environment.

[0040] In a specific embodiment of this utility model, a frame 130 is installed at the bottom of the counting machine 100. A shock-absorbing mechanism is provided between the upper end of the frame 130 and the lower surface of the counting machine 100. The shock-absorbing mechanism includes a shock-absorbing spring and a damper. The upper end of the damper is connected to the bottom of the counting machine 100, and the lower end of the damper is connected to the frame 130. The upper end of the shock-absorbing spring is connected to the lower surface of the counting machine 100, and the lower end of the shock-absorbing spring is connected to the frame 130.

[0041] The working principle of this multi-channel grain counter:

[0042] Synchronous feeding and screening for impurities

[0043] Pour the material to be counted into the hopper 110. The material level sensor monitors the material level and maintains it at 1 / 2-2 / 3 of the height (to avoid uneven feeding due to the material level being too low). Start the motor 350, which drives the roller 310 to rotate at the set speed through the gearbox. The pusher plate 330 rotates synchronously with the roller 310 to scoop up the material from the discharge port of the hopper 110, forming an independent feeding trough.

[0044] As the feeding trough rotates with the drum 310, the broken particles (particle size ≤ 3mm) in the material fall into the guide plate 510 inside the drum 310 through the bottom screening hole 311; at the same time, the vibration motor 530 is started, and the guide plate 510 generates high-frequency micro-vibration (amplitude 0.5mm). The broken particles slide quickly into the slag discharge hopper 551 along the 30° inclined surface, completing the screening and impurity removal (screening efficiency ≥ 95%). The qualified material (particle size > 3mm) continues to rotate with the feeding trough to the discharge end.

[0045] Negative pressure dust removal and precise particle counting

[0046] Start the negative pressure pump 570 to extract dust (such as capsule shell fragments and material powder) inside the roller 310 through the guide pipe. The dust enters the filter bag for collection through the guide pipe to ensure that there is no dust contamination inside the roller 310 and the particle channel.

[0047] Qualified materials rotate with the roller 310 to the discharge end and fall naturally into the multi-channel inlet of the counting machine 100 (4-8 channels feed simultaneously); the photoelectric sensor of each channel detects the amount of material in real time (detection speed 500 frames / second) and transmits the data to the PLC controller. The controller controls the pneumatic valve at the channel outlet according to the preset quantity (e.g., 100 capsules per bottle) to achieve quantitative dispensing.

[0048] Waste residue treatment and equipment reset

[0049] When the slag discharge hopper 551 accumulates to 2 / 3 of its volume, stop the machine, remove the slag discharge hopper 551, empty the slag (which can be collected and recycled or discarded), clean it, and reinstall it; remove the filter bag every 8 hours of operation, and clean it with compressed air to ensure dust removal efficiency.

[0050] The above description is merely an embodiment of this application and is not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application. It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

Claims

1. A multi-channel grain counter, characterized in that, include A counting machine (100) has a hopper (110) installed at the front end of the counting machine (100), and a discharge port is opened at the bottom of the hopper (110), which is connected to the vibrating feeder of the counting machine (100). The discharge mechanism (300) includes a roller (310), a pusher plate (330), and a motor (350). The roller (310) is rotatably installed at the discharge port, the pusher plate (330) is fixed on the surface of the roller (310), and the drive shaft of the motor (350) is connected to the roller (310) in a transmission manner. Waste residue guiding assembly (500), the waste residue guiding assembly (500) includes a guide plate (510) and a vibration motor (530), the surface of the drum (310) is provided with screening holes (311), one end of the guide plate (510) is suspended inside the drum (310), the other end of the guide plate (510) extends to the outside of the drum (310), and the vibration motor (530) is fixedly connected to the guide plate (510).

2. The multi-channel grain counter according to claim 1, characterized in that, Multiple pusher plates (330) are provided, and the multiple pusher plates (330) are distributed in a ring at equal intervals on the surface of the roller (310). A feeding trough is formed between two adjacent pusher plates (330), and the screening hole (311) is provided at the bottom of the feeding trough.

3. A multi-channel grain counter according to claim 1, characterized in that, The motor (350) is fixedly connected to the counting machine (100), one end of the roller (310) is coaxially fixed with a rotating shaft, the outer wall of the hopper (110) is fixed with a gearbox, one end of the rotating shaft is fixed to the output shaft of the gearbox, and the drive shaft of the motor (350) is fixed to the input shaft of the gearbox.

4. A multi-channel grain counter according to claim 3, characterized in that, The gearbox contains a worm gear and a worm shaft that are rotatably mounted. The worm gear is fixed coaxially with the shaft and the worm shaft is fixed coaxially with the drive shaft of the motor (350). The worm gear meshes with the worm shaft.

5. A multi-channel grain counter according to claim 1, characterized in that, The guide plate (510) is inclined outward from the inside of the roller (310), and one end of the guide plate (510) is detachably snapped into the support frame (550). The lower end of the support frame (550) is fixed to the counting machine (100).

6. A multi-channel grain counter according to claim 5, characterized in that, The vibration motor (530) is fixed to the upper end of the support frame (550), and a slag discharge hopper (551) is fixed to the upper end of the support frame (550). The slag discharge hopper (551) receives the end of the guide plate (510).

7. A multi-channel grain counter according to claim 1, characterized in that, The hopper (110) is fixedly equipped with a negative pressure pump (570). The air outlet of the negative pressure pump (570) is connected to a guide pipe. One end of the guide pipe extends into the drum (310). The air outlet of the negative pressure pump (570) is fitted with a removable filter bag.

8. A multi-channel grain counter according to claim 1, characterized in that, The counting machine (100) is equipped with a frame (130) at the bottom. A shock-absorbing mechanism is provided between the upper end of the frame (130) and the lower surface of the counting machine (100). The shock-absorbing mechanism includes a shock-absorbing spring and a damper. The upper end of the damper is connected to the bottom of the counting machine (100), and the lower end of the damper is connected to the frame (130). The upper end of the shock-absorbing spring is connected to the lower surface of the counting machine (100), and the lower end of the shock-absorbing spring is connected to the frame (130).

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