Quantity-controlled turnover equipment for grain depot grain corrosion prevention
By adding a heat dissipation chamber and drying gas treatment in the grain warehouse turning equipment, combined with an ultrasonic vibration plate, the problem of heat dissipation and dehumidification difficulties in the grain warehouse turning is solved, and the grain warehouse turning effect and fresh preservation ability are significantly improved.
Patent Information
- Application Number
- CN202411417103.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-11
- Publication Date
- 2024-12-17
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
When handling large-scale grain warehouses, the existing grain warehouses have difficulty in effectively dissipating heat and dehumidifying, resulting in grains being prone to mold. The traditional grain warehouses cannot effectively reduce the internal temperature and humidity of the grain.
In the grain warehouse, the grain storage warehousing equipment is added, and the dry low-temperature gas is continuously introduced through the gas supply assembly, so that the grain is dehumidified and dried during the warehouse warehousing process is used to improve the dispersion of grain using ultrasonic vibration plates. degree and heat and moisture taken away by the gas.
Through the combination of the heat dissipation chamber and dry gas, the effect of turning the warehouse of the grain is significantly improved, the shelf life of the grain is extended, the temperature and humidity of the grain is reduced, and thus effectively preventing mold.
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Figure CN119142672A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of grain turnover and transportation, and more specifically to a quantity-controlled warehouse turnover device for grain anti-corrosion in a grain depot. Background Art
[0002] Grain is generally stored in grain warehouses. During the grain storage process, due to the respiration of grain, the temperature inside and at the bottom of the granary is high, the humidity is high and it is easy to mold. In order to reduce the risk of grain mold, the grain needs to be turned over. In the past, the turning over of grain storage was purely manual, with slow turning speed and waste of labor. With the emergence of grain turning machines, the problem of relying on manpower to turn over grain storage has been solved, thus saving labor, reducing labor intensity, and turning over grain quickly and with high quality.
[0003] After searching, the patent number CN111824789A discloses "A grain storage device for grain depots", which is a combination of a screw device and a screw conveying device. When the screw conveying device is working, the screw conveying device is vertically lifted and slowly inserted into the grain by rotating the rotating hand wheel in the screw device. The motor drives the auger in the feeding pipe to rotate, and the grain is slowly transported along the spiral blades on the auger to the guide hopper on the outer surface of the feeding pipe, and further discharged;
[0004] However, although the above patent realizes the conveying of grain from the lower layer of the grain pile to the upper layer of the grain pile, and the grain originally in the upper layer of the grain pile automatically collapses and falls to the lower layer, thereby achieving the purpose of overturning and mixing, the grain continuously discharged from the guide hopper soon collapses and falls to the lower layer, which only plays a short-term ventilation role to a certain extent. For grain warehouses with large inventory and deep grain piles, the temperature and humidity inside the grain are higher, and it is difficult to achieve a good heat dissipation and dehumidification effect on the grain by simply turning the warehouse.
[0005] Therefore, we proposed quantity-controlled warehouse-turning equipment for grain preservation in grain warehouses to address the above-mentioned issues. Summary of the invention
[0006] The purpose of the present invention is to solve the existing practical problems. Compared with the existing technology, it provides a quantity-controlled bin-turning equipment for grain preservation in grain depots. It improves the existing simple spiral conveying device, and adds a distribution plate rotatably installed with a feed pipe and having multiple heat dissipation chambers inside the traveling seat. The grain transported upward by the spiral feed plate is introduced into the multiple heat dissipation chambers of the distribution plate in batches through the guide port, and the dry low-temperature gas is continuously introduced into the multiple heat dissipation chambers through the air supply component. During the rotation of the distribution plate, the gas and the grain are fully mixed to dehumidify and dry the grain. The treated gas is discharged from the heat dissipation channel and the exhaust channel, taking away the heat and moisture in the grain. The treated grain is discharged from the discharge chute after rotating for nearly one circle. During the bin-turning process, the grain transported to the upper layer is cooled and dehumidified, thereby improving the effect of grain bin-turning.
[0007] The object of the present invention can be achieved through the following technical scheme: a quantity-controlled bin-turning device for grain storage anti-corrosion comprises a traveling seat with an operating cavity inside, a feeding pipe extending to the bottom end of the traveling seat is fixedly inserted inside the operating cavity, a spiral feeding sheet is installed in the feeding pipe through a rotating shaft, a motor for driving the rotating shaft to rotate and a control box electrically connected to the motor are fixed at the top of the traveling seat, a material guide port is opened at one side of the top of the feeding pipe, and a material discharge trough is opened at the side end of the traveling seat adjacent to the material guide port;
[0008] A material distribution plate rotatably mounted in the heat dissipation cavity and rotatably sleeved on the top end of the material delivery pipe, a linkage structure for synchronous rotation of the rotating shaft and the material distribution plate is installed at the top end of the operating cavity, a plurality of partitions are arranged in an annular manner inside the material distribution plate, and the plurality of partitions divide the interior of the material distribution plate into a plurality of heat dissipation cavities connected to the material guide port, a discharge port connected to the discharge chute is provided on the bottom end wall at the edge of each heat dissipation cavity, an air supply component extending to the top of the operating cavity is installed on the top of the walking seat, a heat dissipation channel connected to the top of the operating cavity is provided on the material distribution plate, and an exhaust channel connected to the heat dissipation channel is provided on the walking seat.
[0009] Furthermore, the travel seat is a conical structure that is narrow at the top and wide at the bottom, and the bottom end wall of the heat dissipation cavity is provided with a material guiding surface that is inclined downward from the middle to the edge.
[0010] Furthermore, the material distribution plate is also a conical structure that is narrow at the top and wide at the bottom. The bottom wall of the material distribution plate is movably fitted with the material guide surface, and the bottom wall of the heat dissipation cavity is tilted downward, which is conducive to the smooth introduction of grain into the heat dissipation cavity through the material guide port.
[0011] Furthermore, the linkage structure includes a gear 1 fixedly sleeved on the top end of the rotating shaft and a gear 2 rotatably installed on the top end wall of the operating chamber and meshing with the gear 1. The upper edge of the distribution plate is fixedly connected with an annular rack coaxially arranged and meshing with the gear 2. The linkage structure is utilized to realize that the same motor drives the spiral feed plate and the distribution plate to rotate synchronously in the opposite direction. Since the gear 1 and the gear 2 are pinions of the same size, and the annular rack is meshing with the gear 2 and has a relatively larger diameter, the rotation speed of the distribution plate is much smaller than the rotation speed of the spiral feed plate driven by the rotating shaft. In the process of rapid rotation of the spiral feed plate to feed materials, the connection time between the heat dissipation chamber and the material guide port is extended, so that the food conveyed upward by the feed pipe can be quantitatively introduced into the heat dissipation chamber of the distribution plate that rotates to one side of the material guide port.
[0012] Furthermore, the air supply assembly includes an air pump fixedly mounted on the top of the walking seat and electrically connected to the control box, and the air outlet of the air pump is connected to an air inlet pipe that runs through the top of the operating chamber.
[0013] Furthermore, the heat dissipation channel includes multiple groups of air inlet holes opened on the top wall of the material distribution tray and connected to the operating cavity, and exhaust holes opened on the outer end wall of the edge of the material distribution tray and connected to the heat dissipation cavity, and there are multiple air inlet holes and exhaust holes.
[0014] Furthermore, the exhaust channel includes an exhaust top cavity opened on the top wall of the walking seat, a pair of exhaust side cavities connected to the exhaust top cavity are opened at the bottom end of the exhaust top cavity, the two exhaust side cavities are not connected, and the bottom end of the exhaust side cavity is connected to the exhaust hole through the opened exhaust port, and a dustproof component is embedded and installed in the exhaust top cavity. During the continuous circular rotation of the distributing disc, the grains guided out from the guide port are introduced into the multiple heat dissipation cavities of the distributing disc in batches with controlled quantities, and low-temperature dry gas is introduced into the top of the operating cavity through the cooperation of the air pump and the air inlet pipe, and the gas is evenly dispersed and introduced into the heat dissipation cavity through the multiple air inlet holes to be fully mixed with the grain, thereby dehumidifying and drying the grain, and the treated gas is discharged from the walking seat through the exhaust hole and the exhaust top cavity, and the heat and moisture in the grain are taken away through continuous gas circulation.
[0015] Furthermore, the dust-proof component includes an exhaust sleeve embedded in and connected to the exhaust top cavity. A filter is installed on the top wall of the exhaust sleeve away from the control box. The filter prevents food from entering the exhaust top cavity during the movement of the device and removes dust from the discharged gas.
[0016] Furthermore, a sensor for monitoring the temperature and humidity of grain is installed in one of the heat dissipation chambers.
[0017] Furthermore, a plurality of ultrasonic vibration plates are embedded in a ring at the bottom of the walking seat, and the ultrasonic vibration plates are connected to the ultrasonic generator in the control box through wires. During the rotation of the distribution plate, the ultrasonic vibration plates cooperate to effectively improve the vibration of the grain temporarily stored in the heat dissipation cavity of the distribution plate, thereby increasing the degree of grain mixing. After the gas is introduced, it is easier to bring out the heat and moisture of the grain through the circulation of the gas, thereby further improving the grain turning effect.
[0018] Compared with the prior art, the advantages of the present invention are:
[0019] (1) This scheme improves and optimizes the existing simple spiral conveying device. A distribution plate with multiple heat dissipation chambers is added inside the traveling seat and is rotatably installed with the top end of the conveying pipe. The grain transported upward by the spiral conveying plate is not directly discharged through the discharge trough on the traveling seat, but is introduced into the multiple heat dissipation chambers of the distribution plate in batches through the guide port. At the same time, dry low-temperature gas is continuously introduced into the multiple heat dissipation chambers through the air supply component. During the rotation of the distribution plate, the gas and the grain are fully mixed, which has the effect of dehumidifying and drying the grain. The treated gas is guided out of the traveling seat through the heat dissipation channel and the exhaust channel, taking away the heat and moisture in the grain. After the treated grain rotates for nearly one circle, it is discharged from the discharge trough connected to the discharge port. Not only can the grain in the lower layer of the grain pile be transported to the upper layer of the grain pile, but the grain transported to the upper layer can also be dissipated and dehumidified, effectively improving the grain storage and anti-corrosion effect.
[0020] (2) This scheme is to add a sensor for detecting the temperature and humidity of grain in one of the heat dissipation chambers to obtain grain storage information, and adjust the grain lifting speed and ventilation volume according to the information obtained. In addition, by adding a plurality of ultrasonic vibration plates at the bottom of the walking seat, during the rotation of the distribution plate, the ultrasonic vibration plates cooperate to effectively improve the vibration of the grain temporarily stored in the heat dissipation chamber of the distribution plate, thereby increasing the degree of grain mixing. After the gas is introduced, it is easier to carry the heat and moisture of the grain out through the circulation of the gas. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 It is a schematic diagram of the external structure of the front of the present invention;
[0022] Figure 2 It is a schematic diagram of the rear external structure of the present invention;
[0023] Figure 3 is a cross-sectional view of the present invention;
[0024] Figure 4 A cross-sectional view from another perspective of the present invention;
[0025] Figure 5It is a cross-sectional view of the junction between the material distribution plate and the material delivery pipe of the present invention;
[0026] Figure 6 It is a cross-sectional view of the walking seat of the present invention;
[0027] Figure 7 It is a schematic structural diagram of the dustproof assembly of the present invention when it is detached from the traveling seat;
[0028] Figure 8 It is a top view of the material distribution tray of the present invention;
[0029] Fig. 9 It is a bottom view of the material distribution tray of the present invention;
[0030] Description of the numbers in the figure:
[0031] 1. Traveling seat; 101. Discharge chute; 102. Exhaust side cavity; 103. Exhaust top cavity; 2. Feed pipe; 3. Rotating shaft; 4. Spiral feed sheet; 5. Motor; 6. Control box; 7. Distributing plate; 701. Partition plate; 702. Discharge port; 703. Air inlet; 704. Exhaust hole; 8. Gear 1; 9. Gear 2; 10. Ring rack; 11. Air pump; 12. Inlet pipe; 13. Exhaust sleeve; 14. Filter; 15. Ultrasonic vibration plate. DETAILED DESCRIPTION
[0032] The following will combine the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all the embodiments. All other embodiments obtained by ordinary technicians in this field without creative work based on the embodiments of the present invention belong to the scope of protection of the present invention.
[0033] Example 1: The present invention discloses a quantity control and warehouse turning device for grain preservation in a grain depot, please refer to Figure 1-Figure 4 , including a traveling seat 1, an operating chamber is provided inside the traveling seat 1, a feeding pipe 2 extending to the bottom end of the traveling seat 1 is fixedly inserted inside the operating chamber, and a spiral feeding piece 4 is rotatably installed in the feeding pipe 2 through a rotating shaft 3;
[0034] A motor 5 for rotating and driving the rotating shaft 3 and a control box 6 electrically connected to the motor 5 are fixedly installed on the top of the traveling seat 1. A material guide port 201 is provided on one side of the top of the feeding pipe 2. A downwardly inclined discharge trough 101 is provided on the side end of the traveling seat 1 adjacent to the material guide port 201. This is an existing simple bin turning structure. The grain transmitted upward by the feeding pipe 2 is discharged from the material guide port 201 and discharged from the discharge trough 101.
[0035] See also Figure 3-Figure 5A distribution plate 7 is rotatably installed in the heat dissipation cavity, which is rotatably sleeved on the top end of the feed pipe 2 and has an opening on the outer wall of the feed pipe 2. A linkage structure for synchronous rotation of the rotating shaft 3 and the distribution plate 7 is installed at the top end of the operating cavity. The linkage structure includes a gear 1 8 fixedly sleeved on the top end of the rotating shaft 3 and a gear 2 9 rotatably installed on the top end wall of the operating cavity and meshing with the gear 1 8. An annular rack 10 is fixedly connected to the upper edge of the distribution plate 7, which is coaxially arranged and meshing with the gear 2 9. The linkage structure is used to achieve synchronous reverse rotation of the spiral feed sheet 4 and the distribution plate 7 driven by the same motor 5.
[0036] A plurality of partitions 701 are provided in an annular manner inside the material distribution plate 7, and the plurality of partitions 701 divide the interior of the material distribution plate 7 into a plurality of heat dissipation chambers connected to the material guide port 201. The travel seat 1 is a conical structure that is narrow at the top and wide at the bottom. The bottom end wall of the heat dissipation chamber is provided with a material guide surface that is inclined downward from the middle to the edge. The material distribution plate 7 is also a conical structure that is narrow at the top and wide at the bottom. The bottom end wall of the material distribution plate 7 is movably fitted with the material guide surface. The heat dissipation chamber is also inclined downward from the middle to the edge. A discharge port 702 connected to the discharge chute 101 is provided on the bottom end wall at the edge of each heat dissipation chamber.
[0037] During the bin turning process, the motor 5 is started, and the motor 5 drives the spiral feed sheet 4 on the rotating shaft 3 to rotate, so that the grain at the bottom of the grain warehouse is lifted upward from the feed pipe 2. Since the gear 1 8 and the gear 2 9 are small gears of the same size, and the annular rack 10 is meshed and connected with the gear 2 9 and has a relatively larger diameter, the rotation speed of the distribution plate 7 is much lower than the rotation speed of the spiral feed sheet 4 driven by the rotating shaft 3;
[0038] During the rapid rotation of the spiral feed plate 4 for feeding, the connection time between the heat dissipation cavity and the guide port 201 is extended, and the grain transported upward by the feed pipe 2 is controlled to be quantitatively introduced into the heat dissipation cavity of the distribution plate 7 that rotates to one side of the guide port 201. The bottom end wall of the heat dissipation cavity is tilted downward, which is conducive to the smooth introduction of grain into the heat dissipation cavity through the guide port 201. The grain entering the heat dissipation cavity rotates nearly one circle to the discharge trough 101 connected to the discharge port 702, and is discharged outward from the discharge trough 101, thereby realizing the upward turning of the grain at the bottom of the grain storage.
[0039] Embodiment 2: Based on Embodiment 1, this embodiment is provided with an air supply assembly extending to the top of the operating chamber on the top of the traveling seat 1, a heat dissipation channel connected to the top of the operating chamber is provided on the material distribution plate 7, and an exhaust channel connected to the heat dissipation channel is provided on the traveling seat 1, so as to achieve better heat dissipation and dehumidification treatment of the grain introduced into the heat dissipation chamber, as follows:
[0040] See also Figure 3-Figure 5The air supply component includes an air pump 11 fixedly mounted on the top of the walking seat 1 and electrically connected to the control box 6, and the air outlet end of the air pump 11 is connected to an air inlet pipe 12 that penetrates through the top of the operating chamber. The heat dissipation channel includes a plurality of air inlet holes 703 opened on the top wall of the distribution plate 7 and connected to the operating chamber, and exhaust holes 704 opened on the outer end wall of the edge of the distribution plate 7 and connected to the heat dissipation chamber, and a plurality of air inlet holes 703 and exhaust holes 704 are provided.
[0041] See also Figure 4-Figure 9 The exhaust passage includes an exhaust top cavity 103 opened on the top wall of the walking seat 1, a pair of exhaust side cavities 102 connected thereto are opened at the bottom of the exhaust top cavity 103, the two exhaust side cavities 102 are not connected, the bottom of the exhaust side cavity 102 is connected to the exhaust hole 704 through the exhaust port opened, a dustproof component is embedded in the exhaust top cavity 103, the dustproof component includes an exhaust sleeve 13 embedded in the exhaust top cavity 103 and connected thereto, and a filter screen 14 is installed on the top wall of the exhaust sleeve 13 away from the control box 6;
[0042] During the continuous circular rotation of the material distribution plate 7, the grains guided out from the material guide port 201 are introduced into the multiple heat dissipation chambers of the material distribution plate 7 in batches and controlled quantities, and low-temperature dry gas is introduced into the top of the operation chamber through the cooperation of the air pump 11 and the air inlet pipe 12. The gas is evenly dispersed and introduced into the heat dissipation chamber through the multiple air inlet holes 703 to fully mix with the grains, thereby dehumidifying and drying the grains.
[0043] The treated gas is discharged from the walking base 1 through the exhaust hole 704 and the exhaust top cavity 103. The heat and moisture in the grain are taken away through continuous gas circulation. The treated grain is discharged from the discharge trough 101 connected to the discharge port 702 after rotating for nearly one circle. This not only realizes the transportation of grain from the lower layer of the grain pile to the upper layer of the grain pile, but also dissipates heat and dehumidifies the grain transported to the upper layer, effectively improving the grain turning effect.
[0044] In addition, it should be added that the present invention can also install a sensor for detecting the temperature and humidity of grain in one of the heat dissipation chambers as needed. The detector is a temperature sensor and a humidity sensor. When the grain is introduced into the heat dissipation chamber, the temperature and humidity sensors are used to detect the temperature and humidity of the grain. The grain lifting speed and ventilation volume are adjusted according to the information obtained to achieve a better processing effect.
[0045] A plurality of ultrasonic vibration plates 15 are embedded in a ring at the bottom of the walking seat 1, and the ultrasonic vibration plates 15 are connected to the ultrasonic generator in the control box 6 through wires. By adding a plurality of ultrasonic vibration plates 15 at the bottom of the walking seat 1, during the rotation of the distribution plate 7, the ultrasonic vibration plates 15 cooperate to effectively improve the vibration of the grain temporarily stored in the heat dissipation cavity of the distribution plate 7, thereby improving the mixing degree of the grain. After the gas is introduced, it is easier to bring out the heat and moisture of the grain by the circulation of the gas, thereby further improving the grain turnover effect.
[0046] The above is only a preferred specific implementation manner of the present invention; but the protection scope of the present invention is not limited thereto; any technician familiar with the technical field within the technical scope disclosed by the present invention; any equivalent replacement or change based on the technical solution and improved concept of the present invention shall be covered by the protection scope of the present invention.
Claims
1. A quantity-controlled warehouse-turning device for grain anti-corrosion in a grain depot comprises a traveling seat (1) with an operating cavity formed therein, a feeding pipe (2) extending to the bottom end of the traveling seat (1) being fixedly inserted in the operating cavity, a spiral feeding piece (4) being rotatably mounted in the feeding pipe (2) via a rotating shaft (3), and characterized in that: A motor (5) for rotating and driving the rotating shaft (3) is fixed to the top of the traveling seat (1); a material guide port (201) is provided on one side of the top of the material delivery pipe (2); and a material discharge trough (101) is provided on the side end of the traveling seat (1) adjacent to the material guide port (201); A material distribution plate (7) rotatably mounted in the heat dissipation cavity and rotatably sleeved on the top end of the material delivery pipe (2), a linkage structure for synchronous rotation of the rotating shaft (3) and the material distribution plate (7) is mounted at the top end of the operating cavity, the interior of the material distribution plate (7) is divided into a plurality of heat dissipation cavities connected to the material guide port (201) by a plurality of partition plates (701) arranged in an annular manner, a discharge port (702) connected to the discharge trough (101) is provided on the bottom end wall at the edge of each heat dissipation cavity, an air supply component extending to the top of the operating cavity is mounted at the top of the walking seat (1), a heat dissipation channel connected to the top of the operating cavity is provided on the material distribution plate (7), and an exhaust channel connected to the heat dissipation channel is provided on the walking seat (1).
2. The quantity-controlled warehouse-turning device for grain preservation in a grain depot according to claim 1 is characterized in that: The walking seat (1) is a conical structure that is narrow at the top and wide at the bottom, and the bottom end wall of the heat dissipation cavity is provided with a material guiding surface that is inclined downward from the middle to the edge.
3. The quantity-controlled warehouse-turning device for grain preservation in a grain depot according to claim 2 is characterized in that: The material distribution plate (7) is also a conical structure that is narrow at the top and wide at the bottom. The bottom end wall of the material distribution plate (7) is movably fitted with the material guiding surface.
4. The quantity-controlled warehouse-turning device for grain preservation in a grain depot according to claim 1 is characterized in that: The linkage structure comprises a gear 1 (8) fixedly sleeved on the top end of the rotating shaft (3) and a gear 2 (9) rotatably mounted on the top end wall of the operating chamber and meshingly connected with the gear 1 (8); the upper end edge of the material distribution plate (7) is fixedly connected with an annular rack (10) coaxially arranged therewith and meshingly connected with the gear 2 (9).
5. The quantity-controlled warehouse-turning device for grain preservation in a grain depot according to claim 1 is characterized in that: The air supply assembly comprises an air pump (11) fixedly mounted on the top of the walking seat (1), and the air outlet end of the air pump (11) is connected to an air inlet pipe (12) penetrating to the top of the operating chamber.
6. The quantity-controlled warehouse-turning device for grain preservation in a grain depot according to claim 5 is characterized in that: The heat dissipation channel comprises a plurality of groups of air inlet holes (703) opened on the top end wall of the material distribution plate (7) and connected to the operation chamber, and air outlet holes (704) opened on the outer end wall of the edge of the material distribution plate (7) and connected to the heat dissipation chamber, and a plurality of air inlet holes (703) and air outlet holes (704) are provided.
7. The quantity-controlled warehouse-turning device for grain preservation according to claim 6 is characterized in that: The exhaust passage comprises an exhaust top cavity (103) opened on the top wall of the walking seat (1); a pair of exhaust side cavities (102) connected to the exhaust top cavity (103) are opened at the bottom end thereof; the two exhaust side cavities (102) are not connected to each other; the bottom end of the exhaust side cavity (102) is connected to the exhaust hole (704) through the exhaust port opened therein; and a dustproof component is embedded and installed in the exhaust top cavity (103).
8. The quantity-controlled warehouse-turning device for grain preservation in a grain depot according to claim 7 is characterized in that: The dustproof component comprises an exhaust sleeve (13) embedded in and connected to the exhaust top cavity (103), and a filter screen (14) is installed on the top wall of the exhaust sleeve (13) away from the control box (6).
9. The quantity-controlled warehouse-turning device for grain preservation in a grain depot according to claim 1 is characterized in that: A sensor for detecting the temperature and humidity of grain is installed in one of the heat dissipation chambers.
10. The quantity-controlled warehouse-turning device for grain preservation in a grain depot according to claim 1 is characterized in that: A plurality of ultrasonic vibration plates (15) are embedded in a ring shape in the bottom of the walking seat (1), and the ultrasonic vibration plates (15) are connected to an ultrasonic generator in a control box (6) via a wire.
Citation Information
Patent Citations
Grain turnover equipment for grain depot
CN111824789A
