A powder filtering and screening device

Abstract

This utility model relates to a powder filtration and screening device, including a funnel, a screen plate, and a grinding mechanism. A frame is fixedly installed on the surface of the funnel, and a screen plate for powder filtration is fixedly installed at the bottom of the funnel. The grinding mechanism is installed inside the funnel to break up powder clumps intercepted by the screen plate. The powder to be filtered is poured into the funnel, and the mounting frame is inclined to facilitate the pouring of powder raw materials. Clumps of powder are intercepted by the screen plate. At this time, the driver is started to drive the disc to rotate. The driver is a dustproof motor, and the output end of the motor is fixedly installed with the protrusion at the center of the disc shaft. As the disc rotates, it drives the push rod to rotate. Since one end of the push rod is hinged to one side of the disc and the other end is hinged to the end of the push rod, the push rod is pushed to rotate. The sleeve inside the push rod slides on the slide rod, and the bottom of the grinding roller is infinitely close to the top of the funnel. As the grinding roller moves, it breaks up the clumps on the top of the screen plate.

Description

Technical Field

[0001] This utility model relates to the technical field of powder filtration equipment, specifically a powder filtration and screening device. Background Technology

[0002] In pharmaceutical preparations, such as the preparation of traditional Chinese medicine powders and Western medicine raw materials, it is often necessary to filter and screen non-dust-generating powder raw materials to remove impurities and ensure uniform particle size to meet the requirements of subsequent production processes. In these scenarios, powder raw materials are prone to clumping due to changes in humidity during storage, compression during transportation, or their inherent characteristics.

[0003] Existing powder filtration and screening devices mostly rely solely on the screening function of screen plates to achieve filtration. When agglomerated powder is intercepted by the screen plate, it cannot be effectively processed, resulting in the continuous accumulation of agglomerated powder on the screen plate surface, which will block the screen holes, reduce filtration and screening efficiency, require frequent shutdowns for cleaning, and affect production continuity. Furthermore, the intercepted agglomerated powder cannot be broken up and reused for screening, resulting in raw material waste. Therefore, we need to provide a powder filtration and screening device. Utility Model Content

[0004] The purpose of this invention is to provide a powder filtration and screening device. A grinding mechanism is installed inside the funnel, which can break up agglomerated powder intercepted on the screen, effectively solving the problem of agglomeration and clogging in real time. This prevents agglomerated powder from accumulating on the screen surface, effectively preventing sieve blockage, eliminating the need for frequent shutdowns for cleaning, ensuring continuous filtration and screening, and significantly improving overall production efficiency. The broken agglomerated powder can be re-passed through the screen for screening, avoiding raw material waste and improving powder raw material utilization. In the pharmaceutical and fine chemical industries where raw material costs are high, this invention can significantly reduce production costs and solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a powder filtration and screening device, comprising:

[0006] The funnel, the screen plate, and the grinding mechanism are provided. A frame is fixedly installed on the surface of the funnel, a screen plate for powder filtration is fixedly installed at the bottom of the funnel, and the grinding mechanism is installed inside the funnel to break up powder agglomerates intercepted by the screen plate.

[0007] The grinding mechanism includes a grinding roller, a mounting frame, and a driving component. The mounting frame is located inside the funnel and the grinding roller is rotatably mounted inside it. A push plate is provided on the surface of the mounting frame through the mounting component. The driving component is installed on one side of the frame and is used to drive the push plate to move so as to realize the reciprocating motion of the grinding roller on the top of the screen.

[0008] Preferably, two sleeves are fixedly installed inside the push plate, and a sliding rod is slidably installed inside each sleeve. Both ends of the sliding rod are installed on the top of the frame through fixing blocks.

[0009] Preferably, the mounting component includes a plug rod, a mounting plate, and a nut. Two plug rods are fixedly mounted on one side of the mounting bracket. Mounting plates are slidably mounted on the surfaces of both plug rods. The two mounting plates are fixed to the bottom of the push plate. Nuts that limit the position of the mounting plates are threaded onto the surfaces of the plug rods.

[0010] Preferably, the mounting bracket is inclined and positioned inside the funnel.

[0011] Preferably, the driving component includes a driver, a disk body, and a push rod. The driver is fixed to the top of the frame, and the disk body is fixedly installed at the output end. The push rod is hinged to one side of the disk body, and the other end of the push rod is hinged to the end of the push plate.

[0012] Preferably, one side of the frame is provided with a cover to protect the disc, and one side of the cover is provided with a groove for sliding the push rod.

[0013] Preferably, the driver is configured as a dustproof driver.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This invention features a grinding mechanism inside the funnel, which can break up agglomerated powder intercepted on the screen, solving the problem of agglomeration and clogging in real time. It prevents agglomerated powder from accumulating on the screen surface, effectively preventing sieve hole blockage, eliminating the need for frequent shutdowns for cleaning, ensuring continuous filtration and screening, and significantly improving overall production efficiency. The broken agglomerated powder can be re-passed through the screen for screening, avoiding raw material waste and improving the utilization rate of powder raw materials. In the fields of pharmaceutical preparations and fine chemicals where raw material costs are high, it can significantly reduce production costs. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0017] Figure 2 This is a three-dimensional sectional view of the frame of this utility model;

[0018] Figure 3 This is a perspective view of the driving component of this utility model;

[0019] Figure 4 This is a perspective view of the mounting component of this utility model.

[0020] In the diagram: 1. Funnel; 2. Mesh plate; 3. Grinding mechanism; 31. Grinding roller; 32. Mounting frame; 33. Driving component; 331. Driver; 332. Disc; 333. Push rod; 4. Frame; 5. Push plate; 6. Sleeve; 7. Slide rod; 8. Mounting component; 81. Insert rod; 82. Mounting plate; 83. Nut; 9. Cover. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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.

[0022] Please see Figure 1-4 This utility model provides a technical solution: a powder filtration and screening device, comprising:

[0023] The funnel 1, the screen plate 2, and the grinding mechanism 3 are provided. A frame 4 is fixedly installed on the surface of the funnel 1, and a screen plate 2 for powder filtration is fixedly installed at the bottom of the funnel 1. The grinding mechanism 3 is installed inside the funnel 1 to break up the powder agglomerates intercepted by the screen plate 2.

[0024] The grinding mechanism 3 includes a grinding roller 31, a mounting frame 32 and a driving component 33. The mounting frame 32 is located inside the funnel 1 and the grinding roller 31 is rotatably mounted inside it. A push plate 5 is provided on the surface of the mounting frame 32 through the mounting component 8. The driving component 33 is mounted on one side of the frame 4 and is used to drive the push plate 5 to move so as to realize the reciprocating motion of the grinding roller 31 on the top of the screen plate 2.

[0025] Specifically, the grinding mechanism 3 is set inside the funnel 1, which can crush the agglomerated powder intercepted on the screen plate 2. It can solve the problem of agglomeration and blockage in real time, prevent the agglomerated powder from accumulating on the surface of the screen plate 2, effectively prevent the screen holes from clogging, eliminate the need for frequent shutdowns for cleaning, ensure the continuous operation of the filtration and screening process, and significantly improve the overall production efficiency. The crushed agglomerated powder can be re-passed through the screen plate 2 for screening, avoiding raw material waste and improving the utilization rate of powder raw materials. In the fields of pharmaceutical preparations and fine chemicals where raw material costs are high, it can significantly reduce production costs. The grinding mechanism 3 is integrated with the funnel 1 and the screen plate 2, eliminating the need to build an additional independent crushing device, simplifying the overall structure of the device, reducing the space occupied by the equipment, and eliminating the process of transferring agglomerated powder to an external crushing site, reducing operational complexity and better adapting to the compact layout requirements of the production line.

[0026] Two sleeves 6 are fixedly installed inside the push plate 5. Slide rods 7 are slidably installed inside both sleeves 6. Both ends of the slide rods 7 are installed on the top of the frame 4 through fixing blocks.

[0027] Furthermore, two sleeves 6 are symmetrically distributed inside the push plate 5, and the inner wall of the sleeve 6 is fitted against the outer wall of the slide rod 7 to ensure that the sleeve 6 can slide stably along the axis of the slide rod 7. Both ends of the slide rod 7 are fixedly connected to the top of the frame 4 through fixing blocks. The fixing blocks are made of metal and are fastened to the top of the frame 4 by welding. The slide rod 7 and the fixing blocks are integrally formed or connected by interference fit to form a support structure for the push plate 5. When the drive component 33 drives the push plate 5 to move, the sleeve 6 slides synchronously along the slide rod 7. Through the sliding cooperation between the sleeve 6 and the slide rod 7, the push plate 5 is guided to avoid deviation during the movement of the push plate 5. At the same time, the large-area contact between the sleeve 6 and the slide rod 7 can disperse the force when the push plate 5 moves, prevent local jamming, and ensure that the grinding roller 31 can move smoothly back and forth along the top of the screen plate 2.

[0028] Mounting component 8 includes a plug rod 81, a mounting plate 82, and a nut 83. Two plug rods 81 are fixedly mounted on one side of the mounting bracket 32. Mounting plates 82 are slidably mounted on the surfaces of the two plug rods 81. The two mounting plates 82 are fixed to the bottom of the push plate 5. Nuts 83 that limit the mounting plates 82 are threaded onto the surfaces of the plug rods 81.

[0029] It is worth noting that the insertion rod 81 and the mounting bracket 32 ​​are welded or integrally formed, and the outer wall of the insertion rod 81 is provided with external threads; two mounting plates 82 are vertically fixed to the bottom of the push plate 5, and the mounting plates 82 are provided with through holes that are adapted to the insertion rod 81. The insertion rod 81 passes through the through holes to achieve a sliding fit between the mounting plate 82 and the insertion rod 81; the nut 83 is adapted to the external threads of the insertion rod 81. After tightening the nut 83, the end face of the nut 83 is tightly fitted with the surface of the mounting plate 82, forming an axial limit on the mounting plate 82, thereby fixing the mounting bracket 32 ​​and the push plate 5; when it is necessary to disassemble or adjust the mounting bracket 32, the mounting plate 82 can be separated from the insertion rod 81 by unscrewing the nut 83, so as to realize convenient maintenance or replacement of the grinding mechanism 3. Moreover, by adjusting the position of the nut 83 on the insertion rod 81, the relative height between the mounting bracket 32 ​​and the push plate 5 can be finely adjusted to adapt to the crushing requirements of powder agglomerates of different thicknesses.

[0030] The mounting bracket 32 ​​is inclined and set inside the funnel 1;

[0031] Specifically, the tilt direction of the mounting frame 32 is consistent with the tilt direction of the inner wall of the funnel 1, and the grinding roller 31 at the bottom of the mounting frame 32 maintains a suitable distance from the surface of the screen plate 2. This tilted structure can, on the one hand, prevent the mounting frame 32 from obstructing the falling of powder in the funnel 1, ensuring that the powder can flow smoothly to the screen plate 2 for filtration; on the other hand, when the grinding roller 31 reciprocates on the top of the screen plate 2, the tilted mounting frame 32 can make the grinding roller 31 generate oblique squeezing and rolling force on the agglomerated powder, improve the agglomeration and break-up effect, and at the same time facilitate the broken powder to slide along the tilt direction to the screen holes of the screen plate 2 and participate in screening again.

[0032] The driving component 33 includes a driver 331, a disk body 332 and a push rod 333. The driver 331 is fixed on the top of the frame 4 and the disk body 332 is fixedly installed at the output end. The push rod 333 is hinged to one side of the disk body 332 and the other end of the push rod 333 is hinged to the end of the push plate 5.

[0033] It should be noted that the output shaft of the driver 331 is fixed to the axis of the disc 332 by a key connection or welding to ensure that the driver 331 can drive the disc 332 to rotate synchronously. The disc 332 has a hinge seat on the side away from the axis. One end of the push rod 333 is hinged to the hinge seat by a pin, and the other end of the push rod 333 is hinged to the connecting lug at the end of the push plate 5 by the same hinge method. When the driver 331 is started, the disc 332 rotates around the output shaft, which drives one end of the push rod 333 to make a circular motion. Since the other end of the push rod 333 is hinged to the push plate 5, and the push plate 5 is guided and restricted by the sleeve 6 and the slide rod 7, the circular motion is converted into the reciprocating linear motion of the push plate 5 along the slide rod 7, which in turn drives the mounting frame 32 and the grinding roller 31 to achieve reciprocating crushing action on the top of the screen plate 2. This transmission structure does not require complex gear or chain components, has high transmission efficiency and low failure rate.

[0034] The frame 4 has a cover 9 on one side to protect the disc 332, and the cover 9 has a groove on one side for the push rod 333 to slide.

[0035] The cover 9 is made of metal or high-strength plastic and is fixed to the side of the frame 4 with bolts. The cover 9 completely encloses the disc 332, leaving only space for the push rod 333 to move. One side of the cover 9 has a groove for the push rod 333 to slide. The length of the groove is adapted to the stroke of the push rod 333's reciprocating motion. The inner wall of the groove is smooth to avoid wear when the push rod 333 slides. The cover 9 can effectively protect the hinge part between the disc 332 and the push rod 333, preventing the transmission parts from jamming or wearing due to accidental contact, thus improving the safety of the device. The groove ensures that the push rod 333 is not obstructed by the cover 9 during reciprocating motion, ensuring smooth transmission.

[0036] Drive 331 is configured as a dustproof drive 331;

[0037] The housing of the driver 331 adopts a sealed structure, and a dustproof sealing ring is provided at the connection between the housing and the output shaft to prevent powder particles in the funnel 1 from entering the interior of the driver 331. This dustproof structure is highly compatible with the powder filtration scenario of the device, avoiding powder from entering the interior of the driver 331 and causing faults such as short circuit of motor coil and bearing wear, thus extending the service life of the driver 331.

[0038] The driver 331 involved in this application is implemented using existing mature technology and is connected to an external PLC controller and power supply. This is a conventional technical means in this field, so its specific circuit connection, control logic and working process will not be described in detail.

[0039] All threaded mounting surfaces in this application utilize a modified triangular thread with a self-locking function. The thread helix angle is designed to be 1.5°-2.5° to enhance the anti-loosening effect. After phosphating, the thread surface is coated with an 8-12μm Dacromet coating and impregnated with silicone sealant to form a sealing layer, resulting in excellent corrosion resistance. In addition, the thread can effectively expel dust, and it can still be used normally even if a small amount of dust adheres to it.

[0040] The device pours the powder to be filtered into the funnel 1, where the mounting bracket 32 ​​is inclined to facilitate the pouring of the powder. Guided by the side wall of the funnel 1, the powder is filtered and sieved through the mesh plate 2. The filtered powder is discharged through the bottom of the mesh plate 2. A collection device can be installed at the bottom of the funnel 1 to collect the filtered powder. Clumps of powder are intercepted by the mesh plate 2. At this time, the driver 331 is started to drive the disc 332 to rotate. The driver 331 is a dustproof motor, and the motor output end is fixedly installed with the protrusion at the axis of the disc 332. As the disc 332 rotates, it drives the push rod 333 to rotate. Since one end of the push rod 333 is hinged to one side of the disc 332 and the other end is hinged to the end of the push rod 333, from The push rod 333 is rotated, and the sleeve 6 inside the push rod 333 slides on the slide rod 7. Due to the setting of the sleeve 6, the contact surface between the sleeve 6 and the rod body is larger than that between the push rod 333 and the rod body. At this time, only one end of the push rod 333 is pushed, which can also realize the movement of the push rod 333 without causing jamming. The push rod 333 will drive the mounting frame 32 and the grinding roller 31 to move. The bottom of the grinding roller 31 is infinitely close to the top of the funnel 1. As the grinding roller 31 moves, it breaks up the clumps on the top of the mesh plate 2. The two insert rods 81 on one side of the mounting frame 32 are respectively inserted into the two mounting plates 82 and are threadedly installed with the insert rods 81 by the nuts 83, which can separate the grinding roller 31 from the push rod 333.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A powder filtration and screening device, characterized in that, include: The funnel (1), the screen plate (2), and the grinding mechanism (3) are provided. A frame (4) is fixedly installed on the surface of the funnel (1). A screen plate (2) for powder filtration is fixedly installed at the bottom of the funnel (1). The grinding mechanism (3) is installed inside the funnel (1) and is used to break up the powder agglomerates intercepted by the screen plate (2). The grinding mechanism (3) includes a grinding roller (31), a mounting frame (32) and a driving component (33). The mounting frame (32) is located inside the funnel (1) and the grinding roller (31) is rotatably mounted inside it. The surface of the mounting frame (32) is provided with a push plate (5) through the mounting component (8). The driving component (33) is installed on one side of the frame (4) and is used to drive the push plate (5) to move so as to realize the reciprocating motion of the grinding roller (31) on the top of the screen plate (2).

2. The powder filtration and screening device according to claim 1, characterized in that: Two sleeves (6) are fixedly installed inside the push plate (5), and a slide rod (7) is slidably installed inside each of the two sleeves (6). Both ends of the slide rod (7) are installed on the top of the frame (4) through fixing blocks.

3. The powder filtration and screening device according to claim 1, characterized in that: The mounting component (8) includes a plug rod (81), a mounting plate (82), and a nut (83). Two plug rods (81) are fixedly installed on one side of the mounting bracket (32). The mounting plates (82) are slidably installed on the surfaces of the two plug rods (81). The two mounting plates (82) are fixed to the bottom of the push plate (5). Nuts (83) that limit the mounting plates (82) are threaded onto the surfaces of the plug rods (81).

4. The powder filtration and screening device according to claim 3, characterized in that: The mounting bracket (32) is inclined and set inside the funnel (1).

5. The powder filtration and screening device according to claim 1, characterized in that: The drive unit (33) includes a driver (331), a disk body (332) and a push rod (333). The driver (331) is fixed on the top of the frame (4), and the disk body (332) is fixedly installed at the output end. The push rod (333) is hinged to one side of the disk body (332), and the other end of the push rod (333) is hinged to the end of the push plate (5).

6. The powder filtration and screening device according to claim 5, characterized in that: The frame (4) has a cover (9) on one side to protect the disc (332), and the cover (9) has a groove on one side for sliding the push rod (333).

7. A powder filtration and screening device according to claim 5, characterized in that: The driver (331) is configured as a dustproof driver (331).

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