A powder filling apparatus that is easy to clean

Abstract

The utility model relates to powder filling equipment technical field, and disclose a kind of powder filling equipment convenient to clean, including workbench, the upper end of workbench is fixedly installed with vertical rod, the outside cooperation of vertical rod is installed with connecting ring, the middle part of connecting ring is fixedly installed with hopper, hopper includes one upper sleeve and two symmetrical lower conical shell, and the end of two lower conical shell is hinged to each other.The utility model hopper design is upper and lower split type, its lower part is formed by two conical shell connected by hinge, and fast release locking is realized by fixed structure, operator only needs simple pressing and pulling, the opening and locking of hopper can be completed, so that the inside of hopper, scraper and auger and all material contact surface are completely exposed, so that the visual operation of no dead angle is realized, every surface is easily touched and cleaned, cross contamination and quality hidden danger caused by residual material are prevented, and the high purity and safety of every batch of products are guaranteed.

Description

Technical Field

[0001] This utility model relates to the technical field of powder filling equipment, specifically to a powder filling device that is easy to clean. Background Technology

[0002] Powder filling equipment is a specialized device for precisely dispensing powdered, granular, or micro-particulate materials (such as milk powder, protein powder, coffee powder, pharmaceuticals, seasonings, and chemical raw materials) into containers (such as cans, bottles, bags, and tins). Existing powder filling equipment typically includes a conical hopper with a lid mounted on top. A drive motor is located at the top of the lid, and its output is connected to a rotating shaft via a coupling. The rotating shaft extends downwards into the hopper and has a scraper mounted on its outer side. During operation, the drive motor drives the rotating shaft and scraper to rotate via the coupling, thereby discharging the powder material from the hopper through a bottom discharge pipe.

[0003] When processing highly viscous powder materials, the material tends to adhere to the inner wall of the hopper and the surface of the scraper. After discharge, these residual materials accumulate inside the hopper, not only wasting raw materials but also affecting the accuracy and hygiene of subsequent filling. Currently, cleaning these residual materials mainly relies on manual operation, requiring the hopper cover to be opened first, and then workers to manually clean the inner wall of the hopper, scraper, and rotating shaft. This cleaning method has obvious drawbacks. Because the hopper structure is mostly deep conical with narrow internal space, blind spots are easily formed around the scraper and rotating shaft, making it difficult for manual workers to fully reach and thoroughly remove the adhered materials. The residual powder not only becomes a source of pollution, affecting the purity and hygiene of the next batch of products, but long-term accumulation may also harden and clump, interfering with the normal operation of the equipment and even leading to a decrease in metering accuracy. Utility Model Content

[0004] The purpose of this invention is to provide a powder filling device that is easy to clean, thereby solving the problem that existing powder filling devices are not easy to clean.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model relates to a powder filling device that is easy to clean. It includes a workbench with a vertical rod fixedly installed at its upper end. A connecting ring is fitted onto the outer side of the vertical rod, and a hopper is fixedly installed in the middle of the connecting ring. The hopper includes an upper sleeve and two symmetrically arranged lower conical shells. One end of each of the two lower conical shells is hinged to the other, and the other end of each shell has a connecting block with a mounting hole. A fixing structure for fixing the two connecting blocks is provided inside the mounting hole. An annular groove is formed on the outer side of the lower end of the upper sleeve. A sealing strip is provided on the upper inner side of each of the two lower conical shells. When the two lower conical shells are closed, the two sealing strips are interference-fitted into the annular groove to achieve a seal. The lower inner side of the outer casing has mounting grooves, and a ring is installed in both mounting grooves. A discharge pipe is provided in the middle of the ring. A cover is fixedly installed on the upper end of the upper sleeve. The upper end of the cover is connected to a feed pipe and a support is fixedly installed. A motor is fixedly installed on the upper end of the support. The output end of the motor is connected to a rotating shaft through a coupling. The lower end of the rotating shaft extends into the interior of the lower conical outer casing. A first scraper set for scraping the inner wall of the upper sleeve and a second scraper set for scraping the inner wall of the lower conical outer casing are installed on the outer wall of the rotating shaft. A connecting rod is detachably connected to the lower end of the rotating shaft through a thread. The lower end of the connecting rod extends into the interior of the discharge pipe and an auger is installed on its outer side.

[0006] Furthermore, the fixing structure includes a first cylinder installed in the mounting hole, a second cylinder at one end of the first cylinder, a sliding rod slidably connected inside the first cylinder, a pressing block fixedly installed at one end of the sliding rod, a fixing cylinder sleeved on the outer side of the first cylinder, and a plurality of through holes opened on the cylinder wall of the first cylinder, each through hole being provided with a ball bearing, one end of the ball bearing abutting against the inner wall of the fixing cylinder, and the other end abutting against the outer side of the pressing block.

[0007] Furthermore, a pressing block is threaded to the other end of the slide rod, the pressing block is slidably connected to the second cylinder, and a first spring is sleeved on the outside of the slide rod, one end of the first spring is fixed to the first cylinder, and the other end is fixed to the pressing block.

[0008] Furthermore, the end of the extrusion block near the slide bar is provided with a tapered guide surface, and the end of the extrusion block away from the slide bar is provided with a baffle.

[0009] Furthermore, a horizontal plate is provided on the outer side of the discharge pipe, and a housing is installed at the lower end of the horizontal plate. A through hole is opened on the horizontal plate, and a limit rod is slidably connected in the through hole. A connecting plate located inside the housing is fixedly connected to the lower end of the limit rod. The upper end of the connecting plate abuts against the lower end of the horizontal plate. The upper end of the limit rod can be inserted into a limit groove opened on the outer side of the lower conical housing. A moving rod is fixedly connected to the lower end of the connecting plate. The lower end of the moving rod passes through the housing and is equipped with a pull block. A second spring is sleeved on the moving rod. The upper end of the second spring is fixed to the connecting plate, and the lower end is fixed to the inner bottom surface of the housing.

[0010] Furthermore, an anti-slip pad is installed on the upper end of the workbench, located directly below the discharge pipe.

[0011] Furthermore, the two lower conical shells are hinged together by hinges.

[0012] Furthermore, the outer contour of the first scraper group matches the inner wall contour of the upper sleeve, and the outer contour of the second scraper group matches the inner wall contour of the lower conical shell.

[0013] This utility model has the following beneficial effects: (1) The hopper of this utility model is designed as an upper and lower split type. Its lower part consists of two conical shells connected by hinges and is fastened by a fixed structure. Operators only need to press and pull to open and lock the hopper, so that all material contact surfaces such as the hopper, scraper and auger can be fully exposed, thus realizing a visual operation without dead angles, easily touching and cleaning every surface, eliminating cross-contamination and quality hazards caused by residual materials, ensuring the high purity and safety of each batch of products, and simplifying the originally tedious and time-consuming manual cleaning process into a fast standardized operation, significantly reducing equipment downtime and improving the overall operating efficiency of the production line.

[0014] (2) The anti-slip mat of this utility model is fixed on the workbench and located directly below the discharge pipe. Before the filling operation, the operator places the empty can to be filled directly on the anti-slip mat, which effectively avoids the problem of the container sliding, tilting or even tipping over due to equipment vibration or discharge impact. This ensures the accurate alignment of the discharge pipe and the empty can, which not only prevents the waste and pollution caused by powder spillage, but also ensures the stability of the filling process.

[0015] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the hopper structure after an explosion. Figure 3 This is a partial cross-sectional view of the hopper structure; Figure 4 for Figure 3 Enlarged schematic diagram of the structure at point A in the middle; Figure 5 for Figure 3 Enlarged schematic diagram of the structure at point B; Figure 6 This is a cross-sectional view of the hopper structure; The attached diagram lists the components represented by each number as follows: In the diagram: 1. Workbench; 2. Vertical rod; 3. Connecting ring; 401. Upper sleeve; 402. Lower conical shell; 403. Connecting block; 404. Sealing strip; 405. Cover; 406. Feed pipe; 5. Fixing structure; 501. First cylinder; 502. Second cylinder; 503. Slide rod; 504. Extrusion block; 505. Fixed cylinder; 506. Ball bearing; 507. Pressing block; 508. First spring; 6. Ring body; 7. Discharge pipe; 701. Horizontal plate; 8. Support base; 9. Motor; 10. Rotating shaft; 11. First scraper assembly; 12. Second scraper assembly; 13. Connecting rod; 14. Screwdriver; 15. Shell; 16. Limiting rod; 17. Connecting plate; 18. Moving rod; 19. Pulling block; 20. Second spring; 21. Anti-slip pad. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] This utility model discloses a powder filling device that is easy to clean, including a workbench 1, a vertical rod 2 fixedly installed on the upper end of the workbench 1, a connecting ring 3 installed on the outer side of the vertical rod 2, and a hopper fixedly installed inside the connecting ring 3.

[0020] like Figures 1-4 As shown, this embodiment discloses a method for quick disassembly and installation of the hopper: The hopper includes an upper sleeve 401 and two symmetrically arranged lower conical shells 402. One end of the two lower conical shells 402 is hinged to each other by a hinge, and the other end is provided with a connecting block 403 with a mounting hole. The mounting hole is provided with a fixing structure 5 for fixing the two connecting blocks 403. An annular groove is provided on the outer side of the lower end of the upper sleeve 401, and a sealing strip 404 is provided on the upper inner side of each of the two lower conical shells 402. When the two lower conical shells 402 are closed, the two sealing strips 404 are interference-fitted into the annular groove to form a reliable seal, while preventing the two lower conical shells 402 from rotating axially and preventing powder leakage. The fixing structure 5 includes a first cylinder 501 installed in the mounting hole, a second cylinder 502 provided at one end of the first cylinder 501, a slide rod 503 slidably connected inside the first cylinder 501, a pressing block 504 fixedly installed at one end of the slide rod 503, a fixing cylinder 505 sleeved on the outside of the first cylinder 501, and several through holes opened on the cylinder wall of the first cylinder 501. Each through hole is provided with a ball bearing 506, one end of the ball bearing 506 abuts against the inner wall of the fixing cylinder 505, and the other end abuts against the outer side of the pressing block 504. The radial displacement of the ball 506 is controlled by the axial movement of the pressing block 504, thereby achieving the locking and releasing of the fixed structure 5. The other end of the slide rod 503 is threadedly connected to a pressing block 507. The pressing block 507 is slidably connected to the second cylinder 502. A first spring 508 is sleeved on the outside of the slide rod 503. One end of the first spring 508 is fixed to the first cylinder 501, and the other end is fixed to the pressing block 507. The first spring 508 provides the elastic force to reset the slide bar 503 and the pressing block 504, ensuring that the fixing structure 5 is always in a locked state when not operated manually. The end of the extrusion block 504 near the slide bar 503 has a tapered guide surface; The tapered guide surface allows the ball 506 to be smoothly pushed outward during the resetting process of the pressing block 504, so that it is locked between the fixed cylinder 505 and the inner wall of the mounting hole of the connecting block 403, thus completing the locking. A horizontal plate 701 is provided on the outside of the discharge pipe 7. A housing 15 is installed at the lower end of the horizontal plate 701. A through hole is opened on the horizontal plate 701. A limiting rod 16 is slidably connected in the through hole. A connecting plate 17 located inside the housing 15 is fixedly connected to the lower end of the limiting rod 16. The upper end of the connecting plate 17 abuts against the lower end of the horizontal plate 701. The upper end of the limiting rod 16 can be inserted into the limiting groove opened on the outside of the lower conical housing 402. A moving rod 18 is fixedly connected to the lower end of the connecting plate 17. The lower end of the moving rod 18 passes through the housing 15 and is equipped with a pull block 19. A second spring 20 is sleeved on the moving rod 18. The upper end of the second spring 20 is fixed to the connecting plate 17, and the lower end is fixed to the inner bottom surface of the housing 15. Among them, the limit rod 16 provides a locking guarantee for the closed hopper, which enhances the safety of the equipment operation. The elastic force of the second spring 20 keeps the limit rod 16 in the locked position. The two lower conical outer shells 402 are hinged together by hinges; Specifically, by pulling down the pull block 19, the pull block 19 moves downward, causing the fixed moving rod 18 to move downward together. The moving rod 18 causes the connecting plate 17 at its top to overcome the tension of the second spring 20 and move downward. The connecting plate 17 moves downward, pulling the limiting rod 16 fixed on it, causing it to slide downward along the through hole on the horizontal plate 701 until the upper end of the limiting rod 16 completely exits from the limiting groove on the outside of the lower conical shell 402. At this time, the auxiliary locking is released. The second spring 20 is stretched during this process, storing the potential energy of the rebound. Then, the pressing block 507 is pressed in the direction of the second cylinder 502 (i.e., towards the inside of the mounting hole). The pressing block 507 pushes the sliding rod 503, which is threaded to it, causing the sliding rod 503 to slide outward inside the first cylinder 501. The sliding rod 503 pushes the pressing block 504 at its end to move outward synchronously. After the pressing block 504 moves outward, its As the outer surface gradually releases the pressure on the ball 506, the ball 506, now free from pressure, moves radially outward within its through hole. Its outer end then releases from the tight contact with the inner wall of the fixed cylinder 505. At this point, the first spring 508 is compressed. Once all the balls 506 have contracted inward, the locking force between the entire fixed structure 5 and the mounting holes of the connecting block 403 disappears. The operator can then pinch the fixed cylinder 505 or the second cylinder 502 and pull the entire fixed structure 5 out of the mounting holes of the two connecting blocks 403. The two lower conical shells 402 are connected only by a hinge point and are no longer subject to fixed constraints. Finally, the operator can rotate and open any one of the lower conical shells 402 by hand, allowing it to rotate around the hinge axis. As the shell opens, the sealing strip 404 at the upper inner end disengages from the annular groove at the lower end of the upper sleeve 401, completely exposing the internal space of the hopper for easy cleaning. When installing the lower conical hopper outer shell, the operator rotates the opened lower conical outer shell 402 to close it with the other lower conical outer shell 402. During this process, ensure that the sealing strips 404 at the upper inner sides of the two lower conical shells 402 are accurately aligned and pressed into the annular groove at the lower end of the upper sleeve 401 to form an interference fit and achieve a seal. Then, align one end of the first cylinder 501 of the fixing structure 5 and insert it into the mounting holes of the two connecting blocks 403. Then, release the pressing block 507. At this time, the compressed first spring 508 releases its potential energy, and its rebound force pushes the pressing block 507 to reset outward. The pressing block 507 pulls the slide rod 503 outward through the thread, and the slide rod 503 drives the pressing block 504 at its end to move inward synchronously. The pressing block 504 moves outward. During the process, its conical guide surface gradually squeezes the ball bearings 506, forcing all the ball bearings 506 to move radially outward in their respective through holes. The outer ends of all the ball bearings 506 are tightly squeezed between the inner wall of the fixed cylinder 505 and the inner wall of the mounting hole, generating friction, thereby firmly locking the entire fixed structure 5 in the mounting hole. Finally, the pull block 19 is released. At this time, the stretched second spring 20 releases its tension, and its rebound force pulls the connecting plate 17 upward. The connecting plate 17 pushes the limit rod 16 to slide upward until the upper end of the limit rod 16 is accurately inserted into the limit groove on the outer side of the lower conical outer shell 402, completing the auxiliary locking.

[0021] like Figure 2 , Figure 3 , Figure 5 and Figure 6 As shown, this embodiment discloses an implementation method for the operation of a powder filling device: The lower inner side of each of the two lower conical shells 402 is provided with a mounting groove, and a ring 6 is installed in both mounting grooves. A discharge pipe 7 is provided in the middle of the ring 6. A cover 405 is fixedly installed on the upper end of the upper sleeve 401. The upper end of the cover 405 is connected to the feed pipe 406 and a support base 8 is fixedly installed. A motor 9 is fixedly installed on the upper end of the support base 8. The output end of the motor 9 is connected to a rotating shaft 10 through a coupling. The lower end of the rotating shaft 10 extends into the interior of the lower conical shell 402. A first scraper group 11 for scraping the inner wall of the upper sleeve 401 and a second scraper group 12 for scraping the inner wall of the lower conical shell 402 are installed on the outer wall of the rotating shaft 10. A connecting rod 13 is detachably connected to the lower end of the rotating shaft 10 through a thread. The lower end of the connecting rod 13 extends into the interior of the discharge pipe 7, and an auger 14 is installed on its outer side. The outlines of the first scraper group 11 and the second scraper group 12 are respectively matched with the inner walls of the upper sleeve 401 and the lower conical outer shell 402 to ensure that there are no dead corners in the scraping. The auger 14 is used to transport materials. The lower end of the rotating shaft 10 is detachably connected to the connecting rod 13 by a thread; The detachable connection allows the connecting rod 13 and the auger 14 to be easily unscrewed from the rotating shaft 10 after the hopper is opened for separate and thorough cleaning. An anti-slip mat 21 is installed on the upper end of the workbench 1, directly below the discharge pipe 7; Specifically, the can to be filled is first placed on the anti-slip mat 21 at the lower end of the discharge pipe 7. The powder material is fed in through the feed pipe 406, passes through the cover 405, and enters the hopper cavity composed of the upper sleeve 401 and two closed lower conical shells 402. The operator starts the motor 9, and the rotor of the motor 9 begins to rotate. Its output torque is transmitted to the rotating shaft 10 through the coupling. The rotating shaft 10 then begins to rotate around its own axis. The rotating shaft 10 drives the connecting rod 13 to rotate synchronously through the threaded interface at its lower end. The connecting rod 13 drives the auger 14 fixed to it to rotate inside the discharge pipe 7. The spiral blades of the auger 14 generate axial thrust, continuously and evenly conveying the powder material gathered at the bottom of the conical hopper downwards. Finally, it is discharged through the discharge pipe 7 and placed into the can to be filled, completing the process. During filling, as the rotating shaft 10 rotates, the first scraper group 11 and the second scraper group 12 installed on its outer wall also move in a circular motion. During the rotation, the outer edge of the first scraper group 11 always keeps in contact with the cylindrical inner wall of the upper sleeve 401, thereby scraping off any powder that may adhere to its inner wall and letting it fall into the material below. During the rotation, the outer edge of the second scraper group 12 always keeps in contact with the conical inner wall of the lower conical outer shell 402, thereby scraping off any powder that may adhere to its inner wall, preventing material accumulation or caking, and guiding the powder to the auger 14 in the center. When the filling task is completed, the motor 9 is turned off, and the rotating shaft 10, connecting rod 13, auger 14, first scraper group 11 and second scraper group 12 stop rotating. The filled can is then removed from the anti-slip mat 21, completing the filling operation.

[0022] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A powder filling device that is easy to clean, comprising a workbench (1), wherein a vertical rod (2) is fixedly installed on the upper end of the workbench (1), a connecting ring (3) is fitted on the outer side of the vertical rod (2), and a hopper is fixedly installed in the middle of the connecting ring (3), characterized in that: The hopper includes an upper sleeve (401) and two symmetrically arranged lower conical shells (402). One end of the two lower conical shells (402) is hinged to each other, and the other end is provided with a connecting block (403) with a mounting hole. The mounting hole is provided with a fixing structure (5) for fixing the two connecting blocks (403). The upper sleeve (401) has an annular groove on the outer side of its lower end, and the two lower conical shells (402) are provided with sealing strips (404) on their inner upper ends. When the two lower conical shells (402) are closed, the two sealing strips (404) are press-fitted into the annular groove to achieve a seal. The lower inner side of each of the two lower conical shells (402) is provided with a mounting groove, and a ring (6) is installed in both mounting grooves. A discharge pipe (7) is provided in the middle of the ring (6).

2. The powder filling equipment that is easy to clean according to claim 1, characterized in that: The fixing structure (5) includes a first cylinder (501) installed in the mounting hole. A second cylinder (502) is provided at one end of the first cylinder (501). A slide rod (503) is slidably connected inside the first cylinder (501). A pressing block (504) is fixedly installed at one end of the slide rod (503). A fixing cylinder (505) is sleeved on the outside of the first cylinder (501). A plurality of through holes are opened on the cylinder wall of the first cylinder (501). A ball bearing (506) is provided in each through hole. One end of the ball bearing (506) abuts against the inner wall of the fixing cylinder (505), and the other end abuts against the outside of the pressing block (504).

3. The powder filling equipment that is easy to clean according to claim 2, characterized in that: The other end of the slide rod (503) is threadedly connected to a pressing block (507), which is slidably connected to the second cylinder (502). A first spring (508) is sleeved on the outside of the slide rod (503). One end of the first spring (508) is fixed to the first cylinder (501), and the other end is fixed to the pressing block (507).

4. The powder filling equipment that is easy to clean according to claim 3, characterized in that: The extrusion block (504) has a tapered guide surface at one end near the slide rod (503), and a baffle is provided at the other end of the extrusion block (504) away from the slide rod (503).

5. The powder filling equipment that is easy to clean according to claim 1, characterized in that: A horizontal plate (701) is provided on the outside of the discharge pipe (7). A housing (15) is installed at the lower end of the horizontal plate (701). A through hole is provided on the horizontal plate (701). A limiting rod (16) is slidably connected in the through hole. A connecting plate (17) located in the housing (15) is fixedly connected to the lower end of the limiting rod (16). The upper end of the connecting plate (17) abuts against the lower end of the horizontal plate (701). The upper end of the limiting rod (16) can be inserted into the limiting groove opened on the outside of the lower conical outer shell (402). The lower end of the connecting plate (17) is fixedly connected to a moving rod (18). The lower end of the moving rod (18) passes through the housing (15) and is fitted with a pull block (19). A second spring (20) is sleeved on the moving rod (18). The upper end of the second spring (20) is fixed to the connecting plate (17), and the lower end is fixed to the inner bottom surface of the housing (15).

6. The powder filling equipment that is easy to clean according to claim 1, characterized in that: An anti-slip mat (21) is installed on the upper end of the workbench (1) directly below the discharge pipe (7).

7. The powder filling equipment that is easy to clean according to claim 1, characterized in that: The two lower conical shells (402) are hinged together by a hinge.

8. The powder filling equipment that is easy to clean according to claim 1, characterized in that: The upper end of the upper sleeve (401) is fixedly installed with a cover (405). The upper end of the cover (405) is connected to a feed pipe (406) and a support base (8) is fixedly installed. The upper end of the support base (8) is fixedly installed with a motor (9). The output end of the motor (9) is connected to a rotating shaft (10) through a coupling. The lower end of the rotating shaft (10) extends into the interior of the lower conical shell (402). The outer wall of the rotating shaft (10) is equipped with a first scraper group (11) for scraping the inner wall of the upper sleeve (401) and a second scraper group (12) for scraping the inner wall of the lower conical shell (402). The lower end of the rotating shaft (10) is detachably connected to a connecting rod (13) by a thread. The lower end of the connecting rod (13) extends into the interior of the discharge pipe (7) and an auger (14) is installed on its outer side.

9. The powder filling equipment that is easy to clean according to claim 8, characterized in that: The outer contour of the first scraper group (11) matches the inner wall contour of the upper sleeve (401), and the outer contour of the second scraper group (12) matches the inner wall contour of the lower conical shell (402).

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