A self-cleaning and self-scraping aggregate hopper for multi-head combination weigher

Abstract

The present application relates to the technical field of aggregate hoppers, and in particular to a self-cleaning and self-scraping aggregate hopper for a multi-head combination weigher, which comprises a primary aggregate hopper, a secondary aggregate hopper and a tertiary aggregate hopper which are sequentially arranged at the discharge end of the multi-head combination weigher from top to bottom, a primary cleaning module is arranged at the connection between the primary aggregate hopper and the multi-head combination weigher, a secondary cleaning module is arranged at the connection between the primary aggregate hopper and the secondary aggregate hopper, and a tertiary cleaning module is arranged at the connection between the secondary aggregate hopper and the tertiary aggregate hopper. The present application has the effect of reducing the adhesion of materials to the inner wall of the aggregate hopper.

Description

Technical Field

[0001] The present application relates to the technical field of aggregate hoppers, and in particular to a self-cleaning and self-scraping aggregate hopper for a multi-head combination weigher. Background Art

[0002] The multi-head combination weigher is a high-precision weighing device that weighs through multiple independent weighing units and processes the data through a computer control system to ultimately obtain accurate weight data. This type of equipment is widely used in many industries, especially in the field of food processing.

[0003] The current multi-head combination weigher includes a feed end and a discharge end, wherein the discharge end is fixedly connected to a discharge hopper, and the discharge hopper is provided with an opening and closing assembly for opening and closing the discharge port. After the material is weighed by the multi-head combination weigher, the material is collected from the discharge end into the discharge hopper, and then the discharge hopper is opened by the opening and closing assembly, at which time the material falls from the discharge hopper, completing the collection of the material.

[0004] Some existing materials are highly viscous and easily adhere to the inner wall of the discharge hopper, resulting in large errors in the weight of the final collected materials. In practice, the material adhering to the inner wall of the discharge hopper is often knocked off by knocking, but the noise caused by the knocking process is large, and the uneven knocking points often result in poor separation of the material from the inner wall of the discharge hopper. Summary of the invention

[0005] In order to reduce the adhesion of materials to the inner wall of the collecting hopper, the present application provides a self-cleaning and self-scraping collecting hopper for a multi-head combination weigher.

[0006] The present application provides a self-cleaning and self-scraping aggregate hopper for a multi-head combination weigher, which adopts the following technical solution:

[0007] A self-cleaning and self-scraping aggregate hopper for a multi-head combination weigher comprises a first-stage aggregate hopper, a second-stage aggregate hopper and a third-stage aggregate hopper which are arranged in sequence from top to bottom at the discharge end of the multi-head combination weigher, a first-stage cleaning module is arranged at the connection between the first-stage aggregate hopper and the multi-head combination weigher, a second-stage cleaning module is arranged at the connection between the first-stage aggregate hopper and the second-stage aggregate hopper, and a third-stage cleaning module is arranged at the connection between the second-stage aggregate hopper and the third-stage aggregate hopper.

[0008] By adopting the above technical scheme, the multi-head combination scale is used to weigh the materials quantitatively. When the materials are fed into the feeding end of the multi-head combination scale, the materials are output from the discharging end of the multi-head combination scale after being weighed by the multiple heads, and are first collected in the primary aggregate hopper, and then collected from the primary aggregate hopper to the secondary aggregate hopper, and then collected from the secondary aggregate hopper to the tertiary aggregate hopper, and finally sent out from the tertiary aggregate hopper. By means of multi-stage aggregation, the processing volume of the aggregate hopper is reduced, and the situation that the materials are difficult to clean after sticking to the wall is also reduced. When the materials stick to the wall, the materials adhered to the inner wall of the primary aggregate hopper are scraped off by the primary cleaning module, the materials adhered to the inner wall of the secondary aggregate hopper are scraped off by the secondary cleaning module, and the materials adhered to the inner wall of the tertiary aggregate hopper are scraped off by the tertiary cleaning module, which is conducive to reducing the adhesion of materials to the inner wall of the aggregate hopper and improving the stability of material aggregation.

[0009] Optionally, the first-level cleaning module includes an air blowing ring pipe, which is arranged at the feed hopper port of the first-level collecting hopper, the air blowing ring pipe is connected to a first air supply component, a plurality of air holes are opened on the side wall of the air blowing ring pipe, and the first-level collecting hopper is provided with an auxiliary cleaning mechanism.

[0010] By adopting the above technical solution, when air is blown into the blowing ring tube through the first air supply part, the gas enters the blowing ring tube and is blown out from multiple air holes respectively. The gas blown out from the air holes is blown toward the inner wall of the first-level collecting hopper. At this time, the gas will blow off the material adhering to the inner wall of the first-level collecting hopper, which is beneficial to improve the stability of the material passing through the first-level collecting hopper.

[0011] Optionally, the auxiliary cleaning mechanism includes at least two scraping rods, the inner wall of the first-level collecting hopper is rotatably provided with a swivel, at least two of the scraping rods are respectively arranged on the bottom surface of the swivel, at least two of the scraping rods are both attached to the inner wall of the first-level collecting hopper, and the first-level collecting hopper is provided with a driving assembly for driving the swivel to rotate.

[0012] By adopting the above technical solution, when the driving assembly drives the swivel to rotate, the swivel simultaneously drives at least two scraper rods to rotate. At this time, at least two hanging rods scrape the inner wall of the primary collecting hopper at the same time, thereby assisting the air blowing to scrape off the material with strong adhesion, which is beneficial to further improve the stability of the material passing through the primary collecting hopper.

[0013] Optionally, the driving assembly includes a rotating fan, the side wall of the blowing ring tube is fixedly connected to a connecting pipe, the rotating fan is arranged in the connecting pipe, the rotating fan is coaxially connected to a gear, the inner wall of the rotating ring is provided with internal teeth, and the gear is meshed with the internal teeth.

[0014] By adopting the above technical solution, when gas is filled into the blowing ring tube, the gas is blown into the connecting tube through the blowing ring tube. Under the action of the airflow, the airflow drives the rotating fan to rotate, the rotating fan drives the gear to rotate coaxially, and the gear then drives the swivel to rotate through the internal teeth. The swivel is finally driven to rotate by the airflow, thereby reducing the use of electrical equipment and thus facilitating improving the stability of the rotation of the swivel.

[0015] Optionally, the secondary cleaning module includes multiple air seats, the side walls of the secondary collecting hopper are provided with multiple fixed frames, the multiple air seats are respectively rotatably arranged on one side of the multiple fixed frames, the top surfaces of the multiple air seats are respectively connected with a first air connecting head, the first air connecting head is connected with a second air supply part, one side of the multiple air seats is opened with an air port, the air seat is provided with a first adjusting component for adjusting the aperture of the air port, and the fixed frame is provided with a fixing component for fixing the rotation angle of the air seat.

[0016] By adopting the above technical scheme, the rotation angle of the air seat is adjusted and fixed by the fixing component, and the diameter of the air port is adjusted by the first adjusting component. When gas is filled into the first air connecting head through the second air supply part, the air flow first enters the air seat and then sprays out from the air port into the secondary collecting hopper. Since the air seat is set at an angle, the air flow rotates in a spiral shape along the inner wall of the secondary collecting hopper, thereby blowing off the material adhering to the inner wall of the secondary collecting hopper, which is beneficial to improve the stability of the material passing through the secondary collecting hopper.

[0017] Optionally, the first adjustment assembly includes a cover plate and a first bolt, the cover plate is arranged on one side of the gas seat, the cover plate covers the gas port, the first bolt passes through the cover plate, and the first bolt is threadedly connected to the gas seat.

[0018] By adopting the above technical solution, when the first bolt is tightened, the first bolt drives the cover plate to press against one side of the air seat. At this time, the cover plate covers the air port. When the first bolt is loosened, the cover plate is separated from the air port. Under the action of the air flow, the air flow blows the cover plate outward and sprays out from the air port, which is beneficial to improve the stability of opening and closing the air port and adjusting the caliber.

[0019] Optionally, the fixing assembly includes an insert rod, a bracket is provided on the side wall of the fixing frame, the insert rod is slidably arranged in the bracket, one end of the insert rod passes through the fixing frame, a plurality of slots are provided on the side wall of the air seat, one end of the insert rod is respectively plugged into the plurality of slots, a spring is sleeved on the side wall of the insert rod, one end of the spring is fixedly connected to the side wall of the insert rod, and the other end of the spring is fixedly connected to the inner wall of the bracket.

[0020] By adopting the above technical solution, when the insertion rod is driven to move in a direction away from the fixing frame, the insertion rod squeezes the spring and the insertion rod is separated from the slot. At this time, the angle of the air seat is adjusted according to actual needs. When the angle adjustment of the air seat is completed, the insertion rod is released, the spring releases the elastic force, and drives the insertion rod to move in a direction close to the fixing frame. At this time, the insertion rod is inserted into the slot, and the air seat is fixed at the current angle, which is beneficial to improve the stability of the air seat angle adjustment and fixation.

[0021] Optionally, the three-stage cleaning module includes a plurality of second air connecting heads, which are respectively fixedly connected to the side walls of the three-stage collecting hopper, and a third air supply part is connected to the plurality of second air connecting heads. The discharge ring of the secondary collecting hopper is provided with a guide ring, and the three-stage collecting hopper is sleeved on the outer wall of the guide ring, and an air collecting groove is provided between the guide ring and the inner wall of the three-stage collecting hopper, and the three-stage collecting hopper is provided with a second adjustment component for adjusting the aperture of the air collecting groove.

[0022] By adopting the above technical solution, when air is inflated into the second air connecting head through the third air supply part, the air flow is filled into the air collecting groove. Under the action of the guide ring, the air flow flows along the air collecting groove toward the inner wall of the three-stage collecting hopper, thereby scraping off the material adhering to the inner wall of the three-stage collecting hopper, which is beneficial to improve the stability of the material passing through the three-stage collecting hopper.

[0023] Optionally, the second adjustment component includes a plurality of retaining ring plates, which are respectively arranged on the bottom surface of the guide ring, and the angle between the retaining ring plate and the guide ring is a positive angle. The outer wall sliding sleeve of the three-stage aggregate hopper is provided with an adjustment ring, and the inner side of the adjustment ring is provided with an extrusion rod. The side wall of the three-stage aggregate hopper is provided with an adjustment hole, and the extrusion rod slides and passes through the adjustment hole. The three-stage aggregate hopper is provided with a fixing part for fixing the adjustment ring.

[0024] By adopting the above technical solution, when it is necessary to adjust the slot diameter of the air collecting trough, the adjustment ring is driven to move downward, and the adjustment ring drives the extrusion rod to move downward. At this time, the extrusion rod squeezes the baffle ring inward, and the baffle ring swings away from the inner wall of the third-level hopper, thereby increasing the slot of the air collecting trough, which is beneficial to improving the convenience of adjusting the slot diameter of the air collecting trough.

[0025] Optionally, the fixing member is a second bolt, which is arranged on the outer wall of the adjusting ring, and the side wall of the three-stage collecting hopper is provided with a thread groove group, and the second bolt passes through the adjusting ring, and the second bolt is threadedly connected to the thread groove group.

[0026] By adopting the above technical solution, when the position of the adjusting ring is determined and needs to be fixed, the second bolt is threadedly tightened and the second bolt is threadedly connected to the thread groove group. At this time, the adjusting ring is fixed to the outer wall of the three-stage aggregate hopper by the second bolt, which is beneficial to improve the stability of the adjustment and fixation of the adjusting ring.

[0027] In summary, this application includes the following beneficial technical effects:

[0028] The multi-head combination scale is used to weigh materials quantitatively. When the materials are fed into the feed end of the multi-head combination scale, the materials are output from the discharge end of the multi-head combination scale after multi-head weighing, and are first collected in the first-level aggregate hopper, and then collected from the first-level aggregate hopper to the second-level aggregate hopper, and then collected from the second-level aggregate hopper to the third-level aggregate hopper, and finally sent out from the third-level aggregate hopper. Through the multi-stage aggregation method, the processing volume of the aggregate hopper is reduced, and the situation that the materials are difficult to clean after sticking to the wall is also reduced. When the materials stick to the wall, the materials adhering to the inner wall of the first-level aggregate hopper are scraped off by the first-level cleaning module, the materials adhering to the inner wall of the second-level aggregate hopper are scraped off by the second-level cleaning module, and the materials adhering to the inner wall of the third-level aggregate hopper are scraped off by the third-level cleaning module, which is conducive to reducing the adhesion of materials to the inner wall of the aggregate hopper and improving the stability of material aggregation. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the self-cleaning and self-scraping aggregate hopper for a multi-head combination weigher of the present application;

[0030] Figure 2 It is a structural schematic diagram of the primary collecting hopper and the primary cleaning module of the present application;

[0031] Figure 3 is a cross-sectional view of one of the air outlet ring pipes of the present application;

[0032] Figure 4 It is a schematic diagram of the connection between the secondary and tertiary aggregate hoppers of the present application;

[0033] Figure 5 It is a structural schematic diagram of the secondary cleaning module of the present application;

[0034] Figure 6 is a cross-sectional view of the secondary and tertiary aggregate hoppers of the present application;

[0035] Figure 7 yes Figure 6 Magnified view of part A.

[0036] Explanation of the reference numerals in the accompanying drawings: 1. first-stage collecting hopper; 2. second-stage collecting hopper; 3. third-stage collecting hopper; 4. multi-head combination weigher; 5. blowing ring tube; 6. air hole; 7. scraper rod; 8. swivel; 9. rotating fan; 10. connecting pipe; 11. gear; 12. inner gear; 13. air seat; 14. fixing frame; 15. first air connection head; 16. air port; 17. cover plate; 18. first bolt; 19. plug rod; 20. bracket; 21. slot; 22. spring; 23. second air connection head; 24. guide ring; 25. air collecting groove; 26. baffle ring; 27. adjusting ring; 28. extrusion rod; 29. ​​adjusting hole; 30. second bolt. DETAILED DESCRIPTION

[0037] The following is combined with Figure 1-7 This application is described in further detail.

[0038] Example:

[0039] See also Figure 1 A self-cleaning and self-scraping aggregate hopper for a multi-head combination weigher includes a primary aggregate hopper 1, a secondary aggregate hopper 2 and a tertiary aggregate hopper 3. The primary aggregate hopper 1, the secondary aggregate hopper 2 and the tertiary aggregate hopper 3 are respectively fixedly installed from top to bottom at the discharge end of the multi-head combination weigher 4. The primary aggregate hopper 1 and the secondary aggregate hopper 2 are both in the shape of a frustum, and the tertiary aggregate hopper 3 is in the shape of a column. Among them, a primary cleaning module is installed at the connection between the primary aggregate hopper 1 and the multi-head combination weigher 4, a secondary cleaning module is installed at the connection between the secondary aggregate hopper 2 and the primary aggregate hopper 1, and a tertiary cleaning module is installed at the connection between the tertiary aggregate hopper 3 and the secondary aggregate hopper 2.

[0040] The collecting hopper is composed of a primary collecting hopper 1, a secondary collecting hopper 2 and a tertiary collecting hopper 3, which is not only conducive to reducing the volume of the collecting hopper, but also improves the convenience of cleaning the materials adhering to the inner wall of the collecting hopper by grading the collecting hopper.

[0041] The multi-head combination weigher 4 is used to quantitatively weigh the materials. When the materials are fed from the feeding end of the multi-head combination weigher 4, the materials are output from the discharging end of the multi-head combination weigher 4 after being weighed, and are first collected in the primary collecting hopper 1, and then collected from the primary collecting hopper 1 in the secondary collecting hopper 2, and then collected from the secondary collecting hopper 2 in the tertiary collecting hopper 3, and finally sent out from the tertiary collecting hopper 3 and packaged. Since some materials have strong adhesion and are easy to adhere to the inner wall of the collecting hopper, the materials adhering to the inner wall of the primary collecting hopper 1 are scraped off by the primary cleaning module, the materials adhering to the inner wall of the secondary collecting hopper 2 are scraped off by the secondary cleaning module, and the materials adhering to the inner wall of the tertiary collecting hopper 3 are scraped off by the tertiary cleaning module.

[0042] For details, see Figure 2The primary cleaning module includes a blowing ring pipe 5, and the number of the blowing ring pipes 5 is three. The three blowing ring pipes 5 are evenly distributed at the feed hopper opening of the primary collecting hopper 1 in a circular array. One end of the blowing ring pipe 5 is an air inlet end, and the other end is an air outlet end. The air inlet end of the blowing ring pipe 5 is fixedly connected to a first air supply member (not shown in the figure), and the side wall of the blowing ring pipe 5 is also provided with a plurality of air holes 6, and the plurality of air holes 6 are all facing the inner wall of the primary collecting hopper 1.

[0043] See also Figure 2 and Figure 3 In order to cooperate with the air blowing ring tube 5 to scrape off the materials strongly adhering to the inner wall of the primary collecting hopper 1, the primary collecting hopper 1 is also equipped with an auxiliary cleaning mechanism, which includes a scraping rod 7. A swivel 8 is rotatably installed on the inner wall of the primary collecting hopper 1. There are at least two scraping rods 7, at least two scraping rods 7 are closely attached to the inner wall of the primary collecting hopper 1, at least two scraping rods 7 are evenly distributed in a circular array with the center of the swivel 8, and one end of the at least two scraping rods 7 is fixedly connected to the bottom surface of the swivel 8 respectively.

[0044] In addition, in order to facilitate the rotation of the rotating ring 8, the primary collecting hopper 1 is also equipped with a driving assembly, and the driving assembly includes a rotating fan 9. The side wall of one of the air blowing ring pipes 5 is fixedly connected with a connecting pipe 10, and the connecting pipe 10 is vertically arranged. The rotating fan 9 is rotatably installed at the bottom end of the connecting pipe 10, and the bottom end of the rotating fan 9 is also coaxially fixedly connected with a gear 11. The inner wall of the rotating ring 8 is fixedly installed with an internal tooth 12, and the gear 11 is meshed with the rotating ring 8 through the internal tooth 12.

[0045] When air is blown into the blowing ring tube 5 through the first air supply member, the airflow passes through the blowing ring tube 5 and is ejected from the air holes 6. Since the air holes 6 face the inner wall of the primary collecting hopper 1, the airflow blows downward along the inner wall of the primary collecting hopper 1, thereby blowing off the materials adhering to the inner wall of the primary collecting hopper 1. In addition, after passing through the blowing ring tube 5, part of the airflow also flows into the connecting pipe 10, and the airflow then drives the rotating fan 9 to rotate, the rotating fan 9 coaxially drives the gear 11 to rotate, the gear 11 drives the rotating ring 8 to rotate, and the rotating ring 8 simultaneously drives at least two scraping rods 7 to rotate, and the at least two scraping rods 7 scrape the inner wall of the inner wall of the primary collecting hopper 1, thereby scraping off the materials with high adhesion strength.

[0046] For details, see Figure 4 The secondary cleaning module includes an air seat 13, and a fixing frame 14 is fixedly installed on the side wall of the secondary collecting hopper 2. The number of fixing frames 14 is provided, and the multiple fixing frames 14 are respectively distributed in a circular array along the vertical center axis of the secondary collecting hopper 2. The number of air seats 13 is the same as the number of fixing frames 14, and each air seat 13 is rotatably installed on one side of each fixing frame 14. The top surface of the air seat 13 is fixedly connected to a first air connection head 15, and the first air connection head 15 is fixedly connected to a second air supply member.

[0047] See also Figure 5 A gas port 16 is provided on one side of the gas seat 13. To facilitate adjusting the size of the aperture of the gas port 16, the gas seat 13 is provided with a first adjustment component, which includes a cover plate 17 and a first bolt 18. The cover plate 17 is located on one side of the gas seat 13, and the cover plate 17 covers the gas port 16. There are two first bolts 18. The two first bolts 18 respectively penetrate the cover plate 17 and extend outside the cover plate 17, and the two first bolts 18 are respectively threadedly connected to the gas seat 13.

[0048] In addition, in order to facilitate the fixing of the rotation angle of the air seat 13, the fixing frame 14 is installed with a fixing assembly, and the fixing assembly includes an insertion rod 19. A bracket 20 is fixedly installed on the side of the fixing frame 14 facing away from the air seat 13, and the insertion rod 19 is slidably installed in the bracket 20. A slot 21 is provided on the side of the air seat 13 facing the bracket 20, and the number of slots 21 is set to be multiple. One end of the insertion rod 19 passes through the bracket 20, and one end of the insertion rod 19 is respectively plugged into the slot 21. The side wall of the insertion rod 19 is sleeved with a spring 22, one end of the spring 22 is fixedly connected to the side wall of the insertion rod 19, and the other end of the spring 22 is fixedly connected to the inner wall of the bracket 20.

[0049] When it is necessary to clean the material adhering to the inner wall of the secondary collecting hopper 2, the jet angle of the air seat 13 is adjusted in advance. At this time, the insertion rod 19 is pulled first, the insertion rod 19 is separated from the slot 21, and the insertion rod 19 compresses the spring 22. Then the jet angle of the air seat 13 is adjusted, and finally the airflow is sprayed along the tangential direction of the inner wall of the secondary collecting hopper 2, thereby forming a surrounding airflow and scraping the material on the inner wall of the secondary collecting hopper 2.

[0050] The flow path of the surrounding airflow is finer than that of the vertical airflow, thereby improving the quality of the material scraped off the inner wall of the secondary collecting hopper 2 .

[0051] When the size of the air port 16 needs to be opened or adjusted, the first bolt 18 is loosened, and then the cover plate 17 is driven to move away from the air seat 13, so as to open the air port 16 and adjust the size of the air port 16.

[0052] For details, see Figure 6 The three-stage cleaning module includes a second air connection head 23, and the number of the second air connection heads 23 is multiple. The multiple second air connection heads 23 are respectively fixedly connected to the outer wall of the three-stage collecting hopper 3, and the multiple second air connection heads 23 are respectively distributed in a ring array with the vertical center axis of the three-stage collecting hopper 3. The multiple second air connection heads 23 are respectively fixedly connected to a third air supply member (not shown in the figure). The discharge port fixing ring of the secondary collecting hopper 2 is provided with a guide ring 24, and the three-stage collecting hopper 3 is sleeved on the outer wall of the guide ring 24, and a gas collecting groove 25 is reserved between the guide ring 24 and the inner wall of the three-stage collecting hopper 3.

[0053] See also Figure 6 and Figure 7 , the airflow passes through the air collecting groove 25 and blows toward the inner wall of the three-stage hopper 3, thereby blowing off the materials adhering to the inner wall of the three-stage hopper 3. In order to facilitate the adjustment of the size of the notch of the air collecting groove 25, the three-stage hopper 3 is equipped with a second adjustment component, which includes a baffle plate 26, and the baffle plates 26 are provided with multiple pieces, and the multiple baffle plates 26 are respectively fixedly connected to the bottom surface of the guide ring 24. Among them, the baffle plates 26 are made of metal materials, the baffle plates 26 have metal toughness, and the baffle plates 26 and the guide ring 24 are arranged at a positive angle. The sliding sleeve of the three-stage hopper 3 is provided with an adjustment ring 27, and the inner wall of the adjustment ring 27 is fixedly connected with an extrusion rod 28, and the number of the extrusion rods 28 is the same as the number of the baffle plates 26. The outer wall of the three-stage hopper 3 is penetrated with an adjustment hole 29, and the extrusion rod 28 penetrates and is slidably connected with the adjustment hole 29, and the end of the extrusion rod 28 away from the adjustment ring 27 abuts against the side wall of the baffle plate 26.

[0054] See also Figure 7 In order to facilitate the fixing of the adjustment ring 27, the three-stage collecting hopper 3 is equipped with a fixing part, which is a second bolt 30. The second bolt 30 is installed on the outer wall of the adjustment ring 27, and the outer wall of the three-stage collecting hopper 3 is provided with a thread groove group, which is distributed along the vertical direction of the three-stage collecting hopper 3, and the second bolt 30 is threadedly connected with the thread groove group respectively.

[0055] When it is necessary to clean the materials adhering to the inner wall of the tertiary hopper 3, first adjust the notch size of the gas collecting groove 25 according to the demand, and then drive the adjustment ring 27 to move downward, and the adjustment ring 27 drives the extrusion rod 28 to move downward, and the extrusion rod 28 squeezes the baffle ring 26 inward, and the notch of the gas collecting groove 25 is enlarged. Then the adjustment ring 27 is fixed to the current position by the second bolt 30. Then the second gas connection head 23 is inflated through the third gas supply part, and the gas is ejected from the notch of the gas collecting groove 25, and vertically cuts into the inner wall of the tertiary hopper 3, so as to blow off the materials adhering to the inner wall of the tertiary hopper 3.

[0056] It is worth mentioning that, in the present embodiment, the first air supply component, the second air supply component and the third air supply component are all air pumps, and the air pumps are connected and fixed via soft air pipes.

[0057] Working principle of a self-cleaning and self-scraping aggregate hopper for multi-head combination weighers:

[0058] The multi-head combination weigher 4 is used to quantitatively weigh the materials. When the materials are fed in from the feeding end of the multi-head combination weigher 4, the materials are weighed and then output from the discharging end of the multi-head combination weigher 4, and first collected in the primary collecting hopper 1, then collected from the primary collecting hopper 1 to the secondary collecting hopper 2, then collected from the secondary collecting hopper 2 to the tertiary collecting hopper 3, and finally sent out from the tertiary collecting hopper 3 and packaged. Some materials have strong adhesion and are easy to adhere to the inner wall of the collecting hopper.

[0059] Therefore, when it is necessary to clean the material adhering to the inner wall of the primary collecting hopper 1, air is blown into the blowing ring tube 5 through the first air supply part, and the airflow is ejected from the air holes 6 after passing through the blowing ring tube 5. Since the air holes 6 are facing the inner wall of the primary collecting hopper 1, the airflow blows downward along the inner wall of the primary collecting hopper 1, thereby blowing off the material adhering to the inner wall of the primary collecting hopper 1. In addition, after passing through the blowing ring tube 5, part of the airflow also flows into the connecting pipe 10, and the airflow then drives the rotating fan 9 to rotate, and the rotating fan 9 coaxially drives the gear 11 to rotate, and the gear 11 drives the rotating ring 8 to rotate, and the rotating ring 8 simultaneously drives at least two scraping rods 7 to rotate, and the at least two scraping rods 7 scrape the inner wall of the inner wall of the primary collecting hopper 1, thereby scraping off the material with strong adhesion strength.

[0060] When it is necessary to clean the material adhering to the inner wall of the secondary collecting hopper 2, the jet angle of the air seat 13 is adjusted in advance. At this time, the insertion rod 19 is pulled first, the insertion rod 19 is separated from the slot 21, and the insertion rod 19 compresses the spring 22. Then the jet angle of the air seat 13 is adjusted. Under the inflation action of the second air supply part, the airflow is finally sprayed in along the tangential direction of the inner wall of the secondary collecting hopper 2, thereby forming a surrounding airflow and scraping the material on the inner wall of the secondary collecting hopper 2.

[0061] When it is necessary to clean the materials adhering to the inner wall of the tertiary hopper 3, first adjust the size of the notch of the gas collecting groove 25 according to the demand, and then drive the adjustment ring 27 to move downward, and the adjustment ring 27 drives the extrusion rod 28 to move downward, and the extrusion rod 28 squeezes the baffle ring 26 inward, and the notch of the gas collecting groove 25 is enlarged. Then the adjustment ring 27 is fixed to the current position by the second bolt 30. Then the third gas supply part is used to inflate the second gas connection head 23, and the gas is ejected from the notch of the gas collecting groove 25, and vertically cuts into the inner wall of the tertiary hopper 3, so as to blow off the materials adhering to the inner wall of the tertiary hopper 3.

[0062] In summary, the aggregate hopper is composed of a primary aggregate hopper 1, a secondary aggregate hopper 2 and a tertiary aggregate hopper 3, which is not only conducive to reducing the volume of the aggregate hopper, but also improves the convenience of cleaning the materials adhering to the inner wall of the aggregate hopper by grading the aggregate hopper. Under the action of the primary cleaning module, the secondary cleaning module and the tertiary cleaning module respectively, it is conducive to reducing the adhesion of materials to the inner wall of the aggregate hopper and improving the stability of material aggregation.

[0063] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A self-cleaning and self-scraping aggregate hopper for a multi-head combination weigher, characterized in that: The invention comprises a first-stage collecting hopper (1), a second-stage collecting hopper (2) and a third-stage collecting hopper (3) which are arranged at the discharge end of a multi-head combination weigher (4) in sequence from top to bottom, wherein a first-stage cleaning module is arranged at the connection between the first-stage collecting hopper (1) and the multi-head combination weigher (4), a second-stage cleaning module is arranged at the connection between the first-stage collecting hopper (1) and the second-stage collecting hopper (2), and a third-stage cleaning module is arranged at the connection between the second-stage collecting hopper (2) and the third-stage collecting hopper (3); The primary cleaning module comprises an air blowing ring tube (5), the air blowing ring tube (5) is arranged at the feed hopper port of the primary collecting hopper (1), the air blowing ring tube (5) is connected to a first air supply member, a side wall of the air blowing ring tube (5) is provided with a plurality of air holes (6), and the primary collecting hopper (1) is provided with an auxiliary cleaning mechanism; The secondary cleaning module comprises a plurality of air seats (13), a plurality of fixing frames (14) are provided on the side wall of the secondary collecting hopper (2), the plurality of air seats (13) are respectively rotatably provided on one side of the plurality of fixing frames (14), the top surfaces of the plurality of air seats (13) are respectively connected with a first air connection head (15), the first air connection head (15) is connected with a second air supply member, an air port (16) is provided on one side of the plurality of air seats (13), the air seats (13) are provided with a first adjusting component for adjusting the aperture of the air port (16), and the fixing frame (14) is provided with a fixing component for fixing the rotation angle of the air seat (13); The three-stage cleaning module comprises a plurality of second air connection heads (23), and the plurality of second air connection heads (23) are respectively fixedly connected and arranged on the side wall of the three-stage collecting hopper (3); the plurality of second air connection heads (23) are connected and arranged with a third air supply part; the discharge ring of the two-stage collecting hopper (2) is provided with a guide ring (24); the three-stage collecting hopper (3) is sleeved on the outer wall of the guide ring (24); an air collecting groove (25) is provided between the guide ring (24) and the inner wall of the three-stage collecting hopper (3); the three-stage collecting hopper (3) is provided with a second adjustment component for adjusting the aperture of the groove of the air collecting groove (25).

2. The self-cleaning and self-scraping aggregate hopper for a multi-head combination weigher according to claim 1, characterized in that: The auxiliary cleaning mechanism comprises at least two scraping rods (7); the inner wall of the primary collecting hopper (1) is rotatably provided with a rotating ring (8); at least two of the scraping rods (7) are respectively provided on the bottom surface of the rotating ring (8); at least two of the scraping rods (7) are both in contact with the inner wall of the primary collecting hopper (1); and the primary collecting hopper (1) is provided with a driving assembly for driving the rotating ring (8) to rotate.

3. The self-cleaning and self-scraping aggregate hopper for a multi-head combination weigher according to claim 2, characterized in that: The driving assembly comprises a rotating fan (9), the side wall of the blowing ring tube (5) is fixedly connected to a connecting tube (10), the rotating fan (9) is arranged in the connecting tube (10), the rotating fan (9) is coaxially connected to a gear (11), the inner wall of the rotating ring (8) is provided with internal teeth (12), and the gear (11) is meshed with the internal teeth (12).

4. The self-cleaning and self-scraping aggregate hopper for a multi-head combination weigher according to claim 1, characterized in that: The first adjustment assembly comprises a cover plate (17) and a first bolt (18); the cover plate (17) is arranged on one side of the gas seat (13); the cover plate (17) covers the gas port (16); the first bolt (18) passes through the cover plate (17); and the first bolt (18) is threadedly connected to the gas seat (13).

5. The self-cleaning and self-scraping aggregate hopper for a multi-head combination weigher according to claim 1, characterized in that: The fixing assembly comprises an insert rod (19), a bracket (20) is arranged on the side wall of the fixing frame (14), the insert rod (19) is slidably arranged in the bracket (20), one end of the insert rod (19) passes through the fixing frame (14), a plurality of slots (21) are arranged on the side wall of the air seat (13), one end of the insert rod (19) can be respectively plugged into the plurality of slots (21), a spring (22) is sleeved on the side wall of the insert rod (19), one end of the spring (22) is fixedly connected to the side wall of the insert rod (19), and the other end of the spring (22) is fixedly connected to the inner wall of the bracket (20).

6. The self-cleaning and self-scraping aggregate hopper for a multi-head combination weigher according to claim 1, characterized in that: The second adjustment component comprises a plurality of baffle plates (26), and the plurality of baffle plates (26) are respectively arranged on the bottom surface of the guide ring (24), and the angle between the baffle plates (26) and the guide ring (24) is set to be a positive angle. The outer wall sliding sleeve of the three-stage aggregate hopper (3) is provided with an adjustment ring (27), and the inner side of the adjustment ring (27) is provided with an extrusion rod (28). The side wall of the three-stage aggregate hopper (3) is provided with an adjustment hole (29), and the extrusion rod (28) slides and passes through the adjustment hole (29). The three-stage aggregate hopper (3) is provided with a fixing part for fixing the adjustment ring (27).

7. The self-cleaning and self-scraping aggregate hopper for a multi-head combination weigher according to claim 6, characterized in that: The fixing member is a second bolt (30), and the second bolt (30) is arranged on the outer wall of the adjusting ring (27). The side wall of the three-stage collecting hopper (3) is provided with a thread groove group, and the second bolt (30) passes through the adjusting ring (27). The second bolt (30) is threadedly connected to the thread groove group.

Images