Dust collecting structure for weightlessness scale blanking bin

Abstract

The invention discloses a dust collecting structure for a weightlessness scale blanking bin. Relates to the technical field of dust collection tools and comprises a supporting frame, a tank body is arranged in the supporting frame, a tank cover is installed at the upper end of the tank body, and a dust collection assembly is installed on the tank cover; a discharging assembly is installed at the lower end of the tank body, a scattering assembly is arranged in the tank body, and the discharging assembly is arranged in a supporting frame in a suspended mode. Through the multi-channel collaborative design of the dust collection assembly, the dust collection efficiency is improved; compared with the traditional design of a single dust suction port, the structure not only improves the dust catching rate, but also can effectively prevent dust from overflowing to pollute the environment and prevent dust from being attached to influence the weighing precision of the pressure sensor, and remarkably improves the working environment and the metering accuracy of equipment; the material uniformity is guaranteed through a dynamic dispersing mechanism of the dispersing assembly; and the scattered materials uniformly fall through the gaps, so that a foundation is laid for the uniformity of subsequent spiral feeding, and the accuracy of metering and discharging control of the weightlessness scale is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of dust collecting tools, in particular to a dust collecting structure for a drop bin of a loss-in-weight scale. Background Art

[0002] In industrial production, loss-in-weight scales are often used to control the batching of fine materials such as cement and lime powder. These materials easily generate large amounts of dust during the batching process. The flying dust pollutes the workshop air environment, affecting work efficiency. Long-term exposure can also damage the respiratory system and other aspects of the operator's health. Traditional dust removal methods, such as installing a dust hood above the silo, waste energy if frequently used and also affect the dust removal efficiency of other dust removal points. The air purification systems installed in some workshops have low dust removal and filtration efficiency, require frequent filter replacement, and are costly to use, making them unable to effectively meet the dust removal needs of the loss-in-weight scale batching silo. The existing dust collection structure mostly adopts a single dust suction port design, which cannot uniformly capture dust in various areas of the discharge bin, and it is easy for local dust to accumulate and not be collected; the single dust suction path leads to uneven negative pressure distribution, and dust in areas far away from the dust suction port is difficult to be effectively sucked in. Not only is the dust capture rate low, but it is also easy to cause dust overflow and pollute the working environment; there is a lack of an effective air pressure regulation structure, and during the dust suction process, it is easy to form local excessive negative pressure or air pressure disorder in the bin, which hinders the normal falling of materials; the obstruction of material falling may cause interruption and accumulation of material dropping, affecting the continuous operation of the loss-in-weight scale, while aggravating dust raising and further increasing the dust removal burden; therefore, improvements and treatments are needed based on the above problems. Summary of the Invention

[0003] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a dust collection structure for a loss-in-weight weighing drop bin.

[0004] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solution: a dust collection structure for a loss-in-weight scale feeding hopper, comprising a support frame, a tank body is provided inside the support frame, a positioning plate is installed on the outer side of the upper end of the tank body, pressure sensors are installed at the four corners of the bottom surface of the positioning plate, the pressure sensors are installed at the four corners of the top surface of the support frame, a tank cover is installed at the upper end of the tank body, and a dust collection assembly is installed on the tank cover; a discharge assembly is installed at the lower end of the tank body, and a scattering assembly is provided inside the tank body, and the discharge assembly is placed in the support frame and suspended in the air.

[0005] Preferably, the discharging assembly includes a discharging box installed at the discharging port at the lower end of the tank body, a first supporting plate is installed on the bottom surface of the discharging box, a first motor is installed on the rear end of the top surface of the first supporting plate, a feeding rod is installed on the output shaft of the first motor through a coupling, and a discharging pipe is installed on the front end surface of the discharging box, the front end of the feeding rod passes through the discharging box and is placed in the discharging pipe, and a spiral blade is installed on the outside of the feeding rod, and the spiral blade is placed in the discharging pipe and the discharging box.

[0006] Preferably, the dust collection assembly includes an annular mounting groove provided on the outer side surface of the tank cover, a plurality of equidistant guide grooves are provided on the inner wall of the annular mounting groove, and an annular connecting plate is installed in the annular mounting groove, the annular connecting plate is provided with a plurality of equidistant guide holes, and the guide holes correspond one-to-one to the guide grooves.

[0007] Preferably, a plurality of equidistant flange tubes are installed on the outer side surface of the annular connecting plate, the flange tubes correspond one-to-one to the guide holes, and a first connecting tube is installed on the other end of the flange tube, the first connecting tube is L-shaped, and the other ends of the plurality of first connecting tubes are connected to the same second connecting tube, the second connecting tube is annular, and the rear end of the second connecting tube is connected to a third connecting tube, and the other end of the third connecting tube is connected to the air pump.

[0008] Preferably, a feed port is provided on the top surface of the tank cover, an electronic valve is installed on the upper end of the feed port, a feed hopper is installed on the upper end of the electronic valve, and a guide plate is installed on the inner top surface of the tank cover, the guide plate is funnel-shaped, and a plurality of equidistant air holes are provided on the inclined surface of the guide plate.

[0009] Preferably, the breaking up assembly includes a protective plate arranged inside the tank body, the protective plate is ring-shaped, and a plurality of equidistant connecting rods are installed on the lower end of the outer side of the protective plate, and the other end of the connecting rod is fixedly connected to the inner wall of the tank body; a dividing plate is provided on the upper end of the protective plate, the cross-section of the dividing plate is trapezoidal, and a plurality of equidistant dividing rods are installed on the inclined surface of the outer side of the dividing plate.

[0010] Preferably, the lower end of the dividing plate is rotatably connected to the upper end of the protective plate, a second supporting plate is horizontally fixed inside the protective plate, a second motor is installed on the top surface of the second supporting plate, and the output shaft of the second motor is fixed to the inner top surface of the dividing plate.

[0011] Preferably, the dividing plate is placed directly below the discharge port of the guide plate.

[0012] Compared with the prior art, the present invention has the following beneficial effects: The present invention improves dust collection efficiency through the multi-channel collaborative design of the dust collection assembly. The air pump drives the system to generate negative pressure, and the dust in the tank is collected centrally through the vent holes of the guide plate, the guide grooves of the tank cover, the guide holes of the annular connecting plate, and the multi-stage connecting pipe. The annular layout of the second connecting pipe and the multiple equidistant guide holes ensure that dust in all areas of the tank is evenly sucked in. The vent holes also balance the air pressure in the tank to prevent material from falling obstructed. Compared with the traditional single dust suction port design, this structure not only improves the dust capture rate, but also effectively prevents dust from overflowing and polluting the environment, and prevents dust adhesion from affecting the weighing accuracy of the pressure sensor, significantly improving the working environment and equipment measurement accuracy. The present invention ensures material uniformity through the dynamic dispersion mechanism of the breaking component. A second motor drives the distribution plate to rotate. The trapezoidal distribution plate cooperates with the inclined distribution rod to continuously cut and break up the material falling from the guide plate. The protective plate prevents unbroken agglomerates from entering the discharge system. The broken material falls evenly through the gap, avoiding discharge blockage or metering errors caused by material agglomeration. Compared with the traditional static dropping method, this design greatly improves the material dispersion effect, lays the foundation for the uniformity of subsequent spiral feeding, and ensures the accuracy of loss-in-weight scale measurement and discharge control. This invention utilizes an integrated structure to achieve multifunctional coordinated operation of the loss-in-weight scale and discharge hopper. Real-time weighing by a pressure sensor is linked to the electronic valve feed control, enabling precise control of material quantity. A spiral feeder discharge assembly ensures stable material output, while a breakup assembly and dust collection assembly address material agglomeration and dust contamination, respectively. These systems are integrated into the tank body and lid, forming a continuous "feed-weigh-breakup-discharge-dust removal" process. Compared to traditional decentralized equipment, this integrated design reduces inter-device connection losses, shortens the material handling path, and improves overall operational efficiency. It also saves installation space and reduces system maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings: Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the overall cross-sectional three-dimensional structure of the present invention; Figure 3 This is a schematic diagram of the connection between the support frame and the tank body of the present invention; Figure 4 This is a schematic diagram of the connection between the tank body and the discharge assembly of the present invention; Figure 5 It is a schematic diagram of the three-dimensional structure of the disintegration component of the present invention; Figure 6 This is a schematic diagram of the connection between the tank cover and the dust collection assembly of the present invention; Figure 7 This is a schematic diagram of the connection between the tank cover and the guide plate of the present invention; Figure 8 For the present invention Figure 2 A magnified schematic diagram of the structure of part A in the middle; Figure 9 For the present invention Figure 7 Enlarged schematic diagram of the structure of part B in the middle.

[0014] Serial numbers in the figure: 1. Support frame; 2. Tank body; 3. Tank cover; 4. Discharge box; 5. First supporting plate; 6. First motor; 7. Discharge pipe; 8. Feed rod; 9. Positioning plate; 10. Pressure sensor; 11. Guide groove; 12. Ring-shaped connecting plate; 13. Guide hole; 14. First connecting pipe; 15. Second connecting pipe; 16. Third connecting pipe; 17. Air pump; 18. Guide plate; 19. Vent; 20. Electronic valve; 21. Feed hopper; 22. Connecting rod; 23. Protective plate; 24. Second supporting plate; 25. Second motor; 26. Distribution plate; 27. Distribution rod. DETAILED DESCRIPTION

[0015] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0016] Example 1: See Figures 1-9The dust collection structure for the drop bin of a loss-in-weight scale in the present invention comprises a support frame 1, a tank body 2 is arranged inside the support frame 1, a positioning plate 9 is installed on the outer side of the upper end of the tank body 2, pressure sensors 10 are installed at the four corners of the bottom surface of the positioning plate 9, and the pressure sensors 10 are installed at the four corners of the top surface of the support frame 1, a tank cover 3 is installed on the upper end of the tank body 2, and a dust collection assembly is installed on the tank cover 3; a discharge assembly is installed at the lower end of the tank body 2, and a scattering assembly is provided inside the tank body 2, and the discharge assembly is placed in the support frame 1 and suspended in the air; the support frame 1 is convenient for providing a stable installation platform for the upper structure such as the tank body 2 and the positioning plate 9 to ensure the stability of the overall structure; the tank 2 is convenient for The material to be processed is stored, and at the same time, a mounting carrier is provided for the internal scattering component, the external discharging component and the tank cover 3; the weight of the tank body 2 is evenly transferred to the pressure sensor 10 through the positioning plate 9 to ensure the stability of the weighing signal; the pressure sensor 10 is convenient for detecting the total weight change of the tank body 2 and the internal material, realizing the weighing function of the loss-in-weight scale, and providing a data basis for material flow control, and the tank cover 3 is convenient for preventing material splashing and dust overflow; at the same time, a mounting base is provided for the dust collection component and the guide plate 18; the discharging component includes a discharging box 4 installed at the discharging port at the lower end of the tank body 2, and the bottom of the discharging box 4 is installed with a first supporting plate 5, and the second supporting plate 5 is installed with a second supporting plate 6. A first motor 6 is installed on the rear end of the top surface of a supporting plate 5, and a feeding rod 8 is installed on the output shaft of the first motor 6 through a coupling, and a discharging pipe 7 is installed on the front end surface of the discharging box 4. The front end of the feeding rod 8 passes through the discharging box 4 and is placed in the discharging pipe 7, and a spiral blade is installed on the outside of the feeding rod 8, and the spiral blade is placed in the discharging pipe 7 and the discharging box 4; the discharging box 4 facilitates the transition of materials from the tank body 2 to the discharging pipe 7, and temporarily stores the materials to be discharged; the first supporting plate 5 facilitates the provision of stable support for the first motor 6, ensuring the stability of the first motor 6 when working; the first motor 6 facilitates the driving of the feeding rod 8 to rotate, providing power for material transportation; The feeding rod 8 and the spiral blade facilitate the continuous and uniform pushing of the material in the discharge box 4 to the discharge pipe 7 for discharge, thus avoiding material blockage and ensuring the stability and continuity of the discharge. The discharge pipe 7 facilitates the coordinated use of the spiral blade to achieve directional conveying and deliver the processed material to the next process. The support frame 1 is welded with Q235B steel, and adjustable feet are set at the four corners of the bottom surface. The foot height adjustment range is ±50mm, and the installation flatness can be achieved with a spirit level ≤0.2mm / m. A reinforcing rib plate is set on the top of the support frame, which is rigidly connected to the positioning plate 9 by M16 bolts to ensure that the flatness of the mounting surface of the pressure sensor 10 is ≤0.1mm. The tank body 2 is rolled from SUS304 stainless steel sheet with a wall thickness of 6 mm and an inner wall polished to Ra ≤ 0.8 μm. A lifting lug with a load capacity of ≥ 2 tons is provided on the top of the tank body to facilitate overall lifting. The pressure sensor 10 is a Siemens QBE9000-P model with a measuring range of 0-500 kg, an accuracy of ±0.05% FS, a protection grade of IP67, and an output signal of DC0-10 V. The sensor is connected to the positioning plate 9 via a spherical washer to eliminate the influence of installation stress.

[0017] Example 2: The technical solution is basically the same as that of Example 1, except that Figure 6 、 Figure 7 、 Figure 9 As shown, the dust collecting assembly includes an annular mounting groove provided on the outer side of the tank cover 3, the inner wall of the annular mounting groove is provided with a plurality of equidistant guide grooves 11, and an annular connecting plate 12 is installed in the annular mounting groove, and the annular connecting plate 12 is provided with a plurality of equidistant guide holes 13, and the guide holes 13 correspond to the guide grooves 11 one by one; the annular mounting groove facilitates providing installation space for the annular connecting plate 12 to ensure stable connection between the dust collecting structure and the tank cover 3; the guide groove 11 facilitates the passage of dust; the annular connecting plate 12 facilitates the connection of the flange pipe and the tank cover 3; the guide holes 13 facilitate the passage of dust; a plurality of equidistant flange pipes are installed on the outer side of the annular connecting plate 12, and the flange pipes correspond to the guide holes 13 one by one, and a first connecting pipe 14 is installed at the other end of the flange pipe, and the first connecting pipe 14 is L-shaped, and the other ends of the plurality of first connecting pipes 14 are connected to the same A second connecting pipe 15 is provided, which is annular and has a third connecting pipe 16 connected to the rear end of the second connecting pipe 15, and the other end of the third connecting pipe 16 is connected to the air pump 17; a flange pipe is used to connect the annular connecting plate 12 and the first connecting pipe 14; the first connecting pipe 14 is used to guide the dust collected by the flange pipe to the second connecting pipe 15, changing the direction of the airflow to adapt to the overall structural layout; the second connecting pipe 15 is used to aggregate the dust airflows of multiple first connecting pipes 14, so that the airflow is concentrated and then transported to the air pump 17 through the third connecting pipe 16 to ensure dust collection efficiency; the third connecting pipe 16 is used to connect the second connecting pipe 15 and the air pump 17 as the final conveying channel for the dust airflow, and the concentrated dust is introduced into the air pump 17; the air pump 17 is used to reduce dust overflow, improve the working environment, and prevent dust adhesion from affecting the weighing accuracy; The annular mounting groove is 30mm wide and 20mm deep, with 12 evenly distributed guide grooves 11 on the inner wall, 5mm wide and 8mm deep, with a clearance of ≤0.1mm between the guide holes 13 of the annular connecting plate 12. The flange pipe is made of φ25mm stainless steel pipe, with a total of 8 groups, each group spaced 45° apart. Rubber sealing rings are installed at the flange interface, with a sealing pressure ≥0.3MPa. Air pump 17: A high-pressure vortex air pump, model B&R BT-20, is used. 0, flow rate 120m³ / h, wind pressure 460mbar, power 2.2kW, equipped with a silencer to ensure operating noise ≤75dB; air flow path: dust passes through the guide groove 11 → guide hole 13 → flange pipe → L-shaped first connecting pipe 14 (curvature radius R50) → annular second connecting pipe 15 (inner diameter φ100mm) → third connecting pipe 16 (inner diameter φ80mm) → air pump 17. The overall pipeline wind speed is controlled at 18-22m / s to ensure that dust does not settle.

[0018] Example 3: The technical solution is basically the same as that of Example 1, except that Figure 2 、 Figure 4 、 Figure 5As shown, a feed port is provided on the top surface of the tank cover 3, an electronic valve 20 is installed on the upper end of the feed port, a feed hopper 21 is installed on the upper end of the electronic valve 20, and a guide plate 18 is installed on the inner top surface of the tank cover 3, the guide plate 18 is funnel-shaped, and a plurality of equidistant air holes 19 are provided on the inclined surface of the guide plate 18; the electronic valve 20 is used to facilitate accurate control of the feed amount and feed timing, and automatic feed adjustment is achieved in conjunction with the weighing system; the feed hopper 21 facilitates external materials to enter the tank body 2; the guide plate 18 facilitates the material entering the feed port to be guided to the dividing plate 26 below, so as to prevent the material from directly impacting the inner wall of the tank body 2 or scattering, thereby ensuring centralized material processing; the air holes 19 facilitate the air flow inside the tank body 2 The dust provides a flow channel so that the dust can be smoothly sucked into the dust collection component, and at the same time balances the air pressure in the tank body 2 to avoid the material falling due to excessive negative pressure. The scattering component includes a protective plate 23 arranged inside the tank body 2, the protective plate 23 is annular, and a plurality of equidistant connecting rods 22 are installed at the lower end of the outer side of the protective plate 23, and the other end of the connecting rod 22 is fixed to the inner wall of the tank body 2; a dividing plate 26 is provided at the upper end of the protective plate 23, the cross section of the dividing plate 26 is trapezoidal, and a plurality of equidistant dividing rods 27 are installed on the inclined surface of the outer side of the dividing plate 26; the lower end of the dividing plate 26 is rotatably connected to the upper end of the protective plate 23, and a second supporting plate 24 is fixed horizontally inside the protective plate 23, and a second supporting plate 24 is installed on the top surface of the second supporting plate The output shaft of the motor 25 and the second motor 25 is fixedly connected to the inner top surface of the dividing plate 26; the protective plate 23 is used to provide a rotation support point for the dividing plate 26, and at the same time isolates the dividing plate 26 from the lower space of the tank body 2; the connecting rod 22 is used to fix the protective plate 23 inside the tank body 2 to ensure its stability when the dividing plate 26 rotates; the dividing plate 26 is used to receive and disperse the material dropped from the guide plate 18; the dividing rod 27 is used to knock out the dust on the surface of the material; the dividing plate 26 is placed directly below the discharge port of the guide plate 18; the guide plate 18 is stamped and formed from SUS304 stainless steel, with a funnel cone angle of 60°, and φ5mm vent holes 19 evenly distributed on the inclined surface, with a hole spacing of 15m m, the total area of ​​the vents accounts for 30% of the inclined surface, and a gradual expansion design is adopted (φ5mm at the inlet end → φ8mm at the outlet end) to balance the air pressure; the trapezoidal cross-section of the dividing plate 26 is 30mm high, the bevel angle is 45°, and the dividing rods 27 are made of φ8mm stainless steel round steel with a spacing of 20mm. They are distributed radially and there are 12 of them; the speed of the dividing plate is driven by the second motor 25 (power 0.75kW, speed 960r / min), and the gear reducer is used to achieve stepless speed regulation of 0-20r / min; the protective plate 23: It adopts SUS304 stainless steel plate with a thickness of 4mm, and is connected to the inner wall of the tank body 2 by M8 bolts. A silicone sealing gasket is installed at the connection to prevent dust leakage.

[0019] Working Principle: In this embodiment, the present invention also proposes a method for using the dust collection structure for the drop bin of a loss-in-weight scale, comprising the following steps: Step 1: First, according to the requirements of the assembly drawing, accurately install the tank body 2, tank cover 3, discharge box 4 and other structural components on the support frame 1; during the installation process, special attention should be paid to the pressure sensor 10 (model QBE9000-P) on the bottom of the positioning plate 9 to ensure that it is completely aligned and tightly connected with the four corners of the top surface of the support frame 1 to ensure the accuracy of subsequent weighing data; then, carefully connect the wires of the first motor 6, second motor 25, air pump 17 and electronic valve 20 and other electrical equipment to ensure that each line is firmly connected and not loose. Then, turn on the main power supply to complete all preparations before starting the equipment. At this time, it is necessary to check whether each device is in the initial standby state; Step 2: After power is turned on, the control system sends a command to open the electronic valve 20, and the external material to be processed enters the feed port on the tank cover 3 through the feed hopper 21; the funnel-shaped guide plate 18 installed on the top surface of the tank cover 3 will play a role, and smoothly guide the incoming material to the dividing plate 26 below, avoiding the material from directly impacting the inner wall of the tank body 2, reducing the loss of the material to the tank body; in this process, part of the material will collide with the guide plate 18 when falling, thereby separating some dust on the surface of the material; at the same time, the pressure sensor 10 under the positioning plate 9 starts to move in real time Monitor the total weight changes of the tank body 2 and the material inside, and accurately transmit the continuously collected weight signals to the control system; the electronic valve 20 will flexibly adjust its opening according to the weight data fed back by the pressure sensor 10: when the weight of the material in the tank body 2 is lower than the set lower limit threshold, the electronic valve 20 increases the opening to speed up the material feeding speed; when the material weight approaches the set upper limit threshold, the electronic valve 20 decreases the opening or even closes, thereby ensuring that the material amount in the tank body 2 is always within a reasonable range, providing a stable material basis for subsequent weight loss measurement and discharge control; The second motor 25 is driven by the second motor 26 to rotate stably on the upper end of the protective plate 23, wherein the protective plate 23 is annular, and its outer lower end is fixedly connected to the inner wall of the tank body 2 by a plurality of equidistant connecting rods 22. This structural design provides a stable support for the rotation of the dividing plate 26 to ensure that the dividing plate 26 will not deviate during high-speed rotation; since the cross section of the dividing plate 26 is trapezoidal and is located just below the discharge port of the guide plate 18, the material falling from the guide plate 18 will fall accurately on the dividing plate 26; as the dividing plate 26 rotates, a plurality of equidistant dividing rods 27 installed on its outer inclined surface will fully stir and disperse the material, further knock out the dust attached to the surface of the material, and make the material more dispersed; the scattered material falls evenly to the lower part of the tank body 2 through the gap between the dividing plate 26 and the protective plate 23, preparing for subsequent uniform discharge; Step 4: During the entire process of feeding and breaking up the materials, a large amount of dust will be generated in the tank body 2. At this time, the air pump 17 is started, and the air pump 17 forms a stable negative pressure environment in the dust collection assembly through the third connecting pipe 16, the annular second connecting pipe 15 and the multiple L-shaped first connecting pipes 14; part of the dust in the tank body 2 will enter the gap between the tank cover 3 and the tank body 2 through the multiple equidistant air holes 19 opened on the inclined surface of the guide plate 18, and the rest of the dust will pass through the inner wall of the annular mounting groove on the outer side of the tank cover 3. Multiple equidistant guide grooves 11, multiple equidistant guide holes 13 on the annular connecting plate 12 (the guide holes 13 correspond one-to-one to the guide grooves 11), and multiple equidistant flange pipes installed on the outer side of the annular connecting plate 12 enter the connecting pipeline. Ultimately, all dust is sucked into a dedicated collection device by the air pump 17. It is worth noting that the vent holes 19 on the guide plate 18 not only provide a flow channel for the dust, but also effectively balance the air pressure in the tank body 2, preventing the normal fall of the material from being affected by excessive negative pressure generated by the air pump 17. Step five, when the discharging operation is required, the control system issues a command to start the first motor 6 installed at the rear end of the top surface of the first supporting plate 5; the output shaft of the first motor 6 drives the feeding rod 8 to rotate through the coupling, and the spiral blade installed on the outside of the feeding rod 8 will rotate synchronously with the feeding rod 8 in the discharging box 4 and the discharging pipe 7; the material in the tank body 2 will fall into the discharging box 4, and the spiral blade will push the material in the discharging box 4 forward continuously and evenly, and finally stably transport the material to the next process through the discharging pipe 7; during the entire discharging process, the pressure sensor 10 always monitors the total weight change of the tank body 2 and the remaining material inside in real time, and the control system calculates the material discharge flow rate according to the rate of change of weight; if the calculated discharge flow rate deviates from the set value, the control system will adjust the speed of the first motor 6 in time, thereby changing the pushing speed of the spiral blade to achieve precise control of the discharge flow rate; Step six, when the discharge is completed, the control system first sends a command to close the electronic valve 20 and stop the material feeding operation; then, wait for all the remaining materials in the tank body 2 to be emptied through the discharge pipe 7. During this period, the pressure sensor 10 will continue to monitor the weight of the tank body 2. When the weight is stable in the no-load state, it means that the material has been emptied; then, turn off the first motor 6, the second motor 25 and the air pump 17 in sequence, and finally disconnect the main power supply, completely cut off the power supply of all electrical devices, and complete the entire operation process; after the operation is completed, a simple inspection of the equipment is also required, such as cleaning the discharge pipe 7 and the discharge box 4. Any residual materials may be cleaned to prepare for the next operation. The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A dust collection structure for a weight loss scale drop bin, comprising a support frame (1), characterized in that: A tank body (2) is provided inside the support frame (1), a positioning plate (9) is installed on the outer side of the upper end of the tank body (2), pressure sensors (10) are installed at the four corners of the bottom surface of the positioning plate (9), and the pressure sensors (10) are installed at the four corners of the top surface of the support frame (1), a tank cover (3) is installed on the upper end of the tank body (2), and a dust collection component is installed on the tank cover (3); a discharge component is installed at the lower end of the tank body (2), and a scattering component is provided inside the tank body (2), and the discharge component is placed in the support frame (1) and suspended in the air.

2. The dust collection structure for the drop bin of a loss-in-weight scale according to claim 1, characterized in that: The discharging assembly comprises a discharging box (4) mounted at the discharging port at the lower end of the tank body (2), a first supporting plate (5) being mounted on the bottom surface of the discharging box (4), a first motor (6) being mounted on the rear end of the top surface of the first supporting plate (5), a feeding rod (8) being mounted on the output shaft of the first motor (6) via a coupling, and a discharging pipe (7) being mounted on the front end surface of the discharging box (4), a front end of the feeding rod (8) passing through the discharging box (4) and being placed in the discharging pipe (7), and a spiral blade being mounted on the outer side of the feeding rod (8), and the spiral blade being placed in the discharging pipe (7) and the discharging box (4).

3. The dust collection structure for a loss-in-weight scale drop bin according to claim 1, characterized in that: The dust collection assembly comprises an annular mounting groove provided on the outer side of the tank cover (3), a plurality of equally spaced guide grooves (11) being provided on the inner wall of the annular mounting groove, and an annular connecting plate (12) being installed in the annular mounting groove, the annular connecting plate (12) being provided with a plurality of equally spaced guide holes (13), the guide holes (13) corresponding one to one with the guide grooves (11).

4. The dust collection structure for a loss-in-weight weighing feed bin according to claim 3, characterized in that: The outer side surface of the annular connecting plate (12) is provided with a plurality of equidistant flange pipes, the flange pipes corresponding to the guide holes (13) one by one, and a first connecting pipe (14) is provided at the other end of the flange pipe, the first connecting pipe (14) being L-shaped, the other ends of the plurality of first connecting pipes (14) being connected to the same second connecting pipe (15), the second connecting pipe (15) being annular, and the rear end of the second connecting pipe (15) being connected to a third connecting pipe (16), the other end of the third connecting pipe (16) being connected to an air pump (17).

5. The dust collection structure for a loss-in-weight scale drop bin according to claim 1, characterized in that: A feed port is provided on the top surface of the tank cover (3), an electronic valve (20) is installed on the upper end of the feed port, a feed hopper (21) is installed on the upper end of the electronic valve (20), and a guide plate (18) is installed on the inner top surface of the tank cover (3), the guide plate (18) is funnel-shaped, and a plurality of equidistant vent holes (19) are provided on the inclined surface of the guide plate (18).

6. The dust collection structure for a loss-in-weight scale drop bin according to claim 1, characterized in that: The breaking up assembly comprises a protective plate (23) arranged inside the tank body (2), the protective plate (23) being annular, and a plurality of equidistant connecting rods (22) being installed at the lower end of the outer side of the protective plate (23), and the other end of the connecting rod (22) being fixedly connected to the inner wall of the tank body (2); a material dividing plate (26) is provided at the upper end of the protective plate (23), the cross section of the material dividing plate (26) being trapezoidal, and a plurality of equidistant material dividing rods (27) being installed on the outer inclined surface of the material dividing plate (26).

7. The dust collection structure for a loss-in-weight weighing feed bin according to claim 6, characterized in that: The lower end of the material dividing plate (26) is rotatably connected to the upper end of the protective plate (23); a second supporting plate (24) is horizontally fixed inside the protective plate (23); a second motor (25) is installed on the top surface of the second supporting plate (24); and an output shaft of the second motor (25) is fixed to the inner top surface of the material dividing plate (26).

8. The dust collection structure for a loss-in-weight weighing feed bin according to claim 6, characterized in that: The material distribution plate (26) is placed directly below the discharge port of the guide plate (18).

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