Vacuum feeding device for processing effervescent tablets

Abstract

The invention solves the problem that intercepted caked raw materials cannot actively flow back in a vacuum feeding device for processing effervescent tablets, relates to the technical field of feeding devices, and particularly relates to a vacuum feeding device for processing effervescent tablets, which comprises a feeding bin, a stirrer is arranged in the feeding bin, the discharging end of the feeding bin is connected with a filter, and the discharging end of the feeding bin is connected with a vacuum pump. The filter is used for separating effervescent tablet powder raw materials and caking raw materials, the bottom of the filter is connected with a vacuum pump, one side of the feeding bin is connected with a spiral feeding frame, the spiral feeding frame is used for feeding the caking raw materials reserved in the filter into the feeding bin again, and the filter comprises a corrugated telescopic pipe connected to the discharging end of the feeding bin; a hopper is connected to the bottom of the corrugated telescopic pipe, and an intercepting net plate is arranged on the inner wall of the hopper. On the basis of separating agglomerated raw materials and powdery raw materials of the effervescent tablets, the agglomerated raw materials can automatically flow back to the feeding bin and be retreated, the manual cleaning frequency is reduced, and meanwhile the raw material utilization rate is increased.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of feeding device, in particular to a vacuum feeding device for effervescent tablet processing. BACKGROUND

[0002] As a special dosage form, the production process of effervescent tablets has very high requirements on the uniformity and flowability of the particle size of raw materials. If the raw materials are caked, it will cause the subsequent tabletting process to appear loose tablets, mottling, or "undissolved particles" when dissolving, which seriously affects the product quality. At the same time, the raw materials of effervescent tablets are mostly powdery, easy to absorb moisture and dust, and the traditional mechanical feeding method is easy to cause raw material loss or environmental pollution, so the vacuum feeding device has become the mainstream equipment for the conveying of effervescent tablet raw materials.

[0003] During storage and transportation, effervescent tablet raw materials are easy to form caked due to moisture absorption and compaction. Although the existing vacuum feeding device is equipped with a basic combination of a filter and a stirrer, the filter can only passively intercept caked raw materials, and the intercepted caked raw materials need to be cleaned regularly by manual, which requires stopping the machine and causes production interruption, and manual cleaning is easy to cause secondary pollution of raw materials. SUMMARY

[0004] In view of the deficiencies of the prior art, the purpose of the present application is to provide a vacuum feeding device for effervescent tablet processing to solve the problem that the intercepted caked raw materials cannot be actively returned in the vacuum feeding device for effervescent tablet processing as described in the background.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a vacuum feeding device for effervescent tablet processing, comprising a feeding bin, a stirrer is arranged in the feeding bin, a filter is connected to the discharge end of the feeding bin, the filter is used to separate effervescent tablet powder raw materials and caked raw materials, a vacuum pump is connected to the bottom of the filter, a spiral feeding frame is connected to one side of the feeding bin, and the spiral feeding frame is used to re-feed the caked raw materials reserved in the filter into the feeding bin. The filter comprises a corrugated expansion pipe connected to the discharge end of the feeding bin, the bottom of the corrugated expansion pipe is connected with a hopper, the inner wall of the hopper is provided with an intercepting net plate, an electric telescopic rod is installed between the bottom of the feeding bin and the hopper, a telescopic hose is connected between one side of the hopper and the spiral feeding frame, the bottom wall of the end of the telescopic hose facing the hopper is located below the intercepting net plate, and the telescopic hose is arranged in a downward inclined manner from the side facing the hopper to the side facing the spiral feeding frame.

[0006] As a preferred, the inner walls of the telescopic hose on both sides are provided with inclined arranged collision pieces, and the collision pieces on the inner walls of both sides of the telescopic hose are staggered.

[0007] Preferably, a return hose is connected between the bottom of the telescopic hose and the hopper, a mesh is arranged on the inner wall of one end of the telescopic hose, and the top surface of the mesh is consistent with the path of the bottom wall of the telescopic hose.

[0008] Preferably, the mesh is located on the side of the impact sheet away from the hopper, and the return hose is arranged in a downward inclined manner from the side facing the telescopic hose to the side facing the hopper.

[0009] Preferably, the intercepting mesh plate is arranged in an inclined manner, the inclination angle is in the range of 3°-5°, and the lowest part of the intercepting mesh plate faces the side of the telescopic hose.

[0010] Preferably, the stirrer comprises a driving structure mounted on the top wall of the feeding bin, the output end of the driving structure is drivingly connected with a stirring shaft, a plurality of stirring blades are mounted on the surface of the stirring shaft, and a transmission structure is mounted between the stirring shaft and the shaft body of the screw feeding frame.

[0011] Preferably, the stirring blade comprises a bottom support plate fixed to the surface of the stirring shaft, a rectangular sheet is arranged above the bottom support plate, and a spring is connected between the rectangular sheet and the bottom support plate.

[0012] Preferably, a guide pipe is connected between the outlet end of the screw feeding frame and the feeding bin, a dispersion guide plate is connected to the end of the guide pipe facing the inside of the feeding bin, the side of the dispersion guide plate away from the guide pipe is arranged in an inclined manner, and a plurality of separation strips are arranged on the top surface of the dispersion guide plate.

[0013] By means of the above technical scheme, the present application provides a vacuum feeding device for effervescent tablet processing, which has at least the following beneficial effects: 1. The present application utilizes the combination of the filter and the screw feeding frame to realize the automatic return of the caked material to the feeding bin for reprocessing on the basis of separating the caked material and the powder material, thereby reducing the cleaning frequency and improving the utilization rate of the material.

[0014] 2. When the caked material intercepted in the filter is guided into the screw feeding frame through the telescopic hose along the inclined pipeline, the caked material will repeatedly impact the impact sheets arranged in a staggered manner under the action of gravity, thereby achieving the preliminary crushing in the return stage.

[0015] 3. The mesh and the return hose arranged in the area where the caked material continues to travel after impacting the bottom of the telescopic hose can guide the powder material with a qualified particle size after crushing into the lower part of the intercepting mesh plate in the hopper, so that the powder material after preliminary crushing in the return stage is quickly separated from the caked material.

[0016] 4、 The present application utilizes the dispersion guide plate to uniformly disperse the caked raw materials into the feeding bin, when the caked raw materials drop on the rectangular piece with spring, the impact force promotes the slight vibration of the spring to separate the particle adhesion inside the caked material, the disperse qualified rate is higher, and the compression buffer of the spring can also avoid the direct fracture of the bottom supporting plate, only causing the slight deformation of the spring. BRIEF DESCRIPTION OF DRAWINGS

[0017] The drawings described herein are used to provide further understanding of the present application, and form a part of the present application, the illustrative embodiments of the present application and the description thereof are used to explain the present application, and do not constitute improper limitation to the present application. In the drawings: Figure 1 It is the overall structure schematic diagram of the present application; Figure 2 It is the structure schematic diagram of the stirrer of the present application; Figure 3 It is the position schematic diagram of the feeding bin and the dispersion guide plate of the present application; Figure 4 It is the structure schematic diagram of the stirring blade of the present application; Figure 5 It is the partial cut structure schematic diagram of the filter of the present application; Figure 6 It is the installation structure schematic diagram of the flexible hose and the collision piece of the present application; Figure 7 It is the plane structure schematic diagram of the filter of the present application.

[0018] In the drawings: 1, feeding bin; 2, stirrer; 201, driving structure; 202, stirring shaft; 203, stirring blade; 2031, bottom supporting plate; 2032, rectangular piece; 2033, spring; 204, transmission structure; 3, filter; 301, corrugated flexible tube; 302, hopper; 303, intercepting mesh plate; 304, electric telescopic rod; 305, flexible hose; 3051, collision piece; 3052, backflow hose; 3053, mesh; 4, vacuum pump; 5, spiral feeding frame; 501, guide pipe; 502, dispersion guide plate; 503, partition strip. DETAILED DESCRIPTION

[0019] Clearly, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0020] Referring to Figures 1-7 The embodiment provides a vacuum feeding device for effervescent tablet processing. The intercepted caked effervescent tablet raw materials can be guided to flow back and participate in agitation and crushing again. The feeding device specifically comprises a feeding bin 1 for temporarily storing effervescent tablet powdery raw materials and a stirrer 2 arranged in the feeding bin 1. A filter 3 is connected to the discharge end of the feeding bin 1. The filter 3 is used for separating effervescent tablet powdery raw materials and caked raw materials. A vacuum pump 4 is connected to the bottom of the filter 3. The effervescent tablet powdery raw materials are guided into the feeding bin 1 for temporary storage. When the processing equipment of the effervescent tablet needs to be fed, the vacuum pump 4 is operated to perform a suction action, and the raw materials in the feeding bin 1 are allowed to naturally drop down, so that the raw materials meeting the standard can quickly pass through the filter 3 and be transferred to the processing equipment through a conveying pipeline, thereby achieving feeding of the raw materials. In the process, the caked raw materials are intercepted by the filter 3, so that the caked raw materials are prevented from being fed into the processing equipment together, thereby affecting the quality of the processed products.

[0021] In the conventional operation, the filter 3 can only realize the function of screening according to the particle size of the raw materials. The intercepted raw materials can only be temporarily stored in the filter 3 and wait for subsequent centralized processing. In the embodiment, the intercepted caked raw materials can be sent to the inside of the feeding bin 1 again through the combination structure of the spiral feeding frame 5 connected to one side of the feeding bin 1 and the filter 3, and be repeatedly dispersed by the stirrer 2.

[0022] Specifically, the filter 3 comprises a corrugated telescopic pipe 301 connected to the discharge end of the feeding bin 1. A hopper 302 is connected to the bottom of the corrugated telescopic pipe 301. An intercepting mesh plate 303 is arranged on the inner wall of the hopper 302. An electric telescopic rod 304 is installed between the bottom of the feeding bin 1 and the hopper 302. A telescopic hose 305 is connected between one side of the hopper 302 and the spiral feeding frame 5. The telescopic hose 305 also has the characteristic of changing length by stretching. The bottom wall of one end of the telescopic hose 305 towards the hopper 302 is located below the intercepting mesh plate 303. The telescopic hose 305 is arranged in a downward inclined manner from the side towards the hopper 302 to the side towards the spiral feeding frame 5.

[0023] It is worth mentioning that in the present fact, when the raw materials fall into the filter 3, the raw materials first contact the upper surface of the intercepting mesh plate 303, at the moment of contact, most of the powdered raw materials are directly sucked down along the mesh holes of the intercepting mesh plate 303, and the caked raw materials are reserved on the upper surface of the intercepting mesh plate 303, realizing the basic separation. In addition, the electric telescopic rod 304 is operated in cooperation, which repeatedly extends outward and shrinks inward, generating upward pulling force and downward pushing force on the hopper 302, and the force is transmitted to the corrugated telescopic pipe 301, which can promote the corrugated telescopic pipe 301 to follow the contraction and stretching. Because the caked raw materials are heavier than the powdered raw materials, therefore, when the raw materials on the surface of the intercepting mesh plate 303 follow the rising and then falling, the granular raw materials contact the intercepting mesh plate 303 earlier than the powdered raw materials, and under the action of their own inertia, they have a greater probability of rolling to the side where the telescopic hose 305 is located, and then being introduced into the spiral feeding frame 5 through the telescopic hose 305, and then cooperating with the spiral feeding frame 5 to re-put the part of the caked raw materials into the inside of the feeding bin 1.

[0024] As can be seen, compared with the function of the traditional filter 3 which can only temporarily store the intercepted materials, the present embodiment realizes the automatic backflow and reprocessing of the effervescent tablet caked raw materials through the combination of the filter 3 related structure and the spiral feeding frame 5, reduces the frequency of manual cleaning, and improves the utilization rate of raw materials.

[0025] Embodiment two The present embodiment is based on the structure extension of embodiment one, as shown in Figure 1 , Figures 5-6 The two sides of the inner wall of the telescopic hose 305 are both provided with impact plates 3051 arranged obliquely, and the impact plates 3051 on the two sides of the inner wall of the telescopic hose 305 are staggered. The application of multiple impact plates 3051 can force the caked raw materials to collide multiple times during the falling process along the obliquely arranged inner wall of the telescopic hose 305, realizing the preliminary crushing of the caked raw materials.

[0026] As described above, the bottom of the telescopic hose 305 is connected with a backflow hose 3052 between the telescopic hose 305 and the hopper 302, and the backflow hose 3052 is arranged in a downward inclined manner from the side of the telescopic hose 305 to the side of the hopper 302, and the backflow hose 3052 also has the characteristic of changing length by stretching. The inner wall of the end of the backflow hose 3052 close to the telescopic hose 305 is provided with a mesh 3053, and the top surface of the mesh 3053 is consistent with the path of the bottom wall of the telescopic hose 305, and the mesh 3053 is located on the side away from the hopper 302 of the impact plate 3051, ensuring that the caked raw materials pass through the area range of the mesh 3053 after colliding with the impact plate 3051. The mesh 3053 is used to prevent the undispersed caked raw materials from entering the backflow hose 3052.

[0027] The caked raw materials fall along the inclined pipeline under the action of gravity after entering the telescopic hose 305, repeatedly impacting the staggered impact plates 3051, and are preliminarily crushed in the reflux stage. And in the process of moving the hopper 302 upward driven by the electric telescopic rod 304, the telescopic hose 305 is subjected to an upwardly inclined tension, which, while extending its length, also increases the inclination angle. In this stage, the impact force of the caked raw materials falling back is stronger.

[0028] The powder with a qualified particle size after crushing enters the reflux hose 3052 through the mesh 3053, is directly introduced into a lower position of the hopper 302 via the reflux hose 3052, and is then transferred by the vacuum pump 4; the still larger caked materials continue to fall into the spiral feeding frame 5.

[0029] As can be seen, the raw materials are preliminarily crushed and secondarily screened before entering the spiral feeding frame 5, which reduces the working load of the stirrer 2, further improves the first pass rate of the raw materials, and reduces the number of circulation treatments.

[0030] Example Three As shown in Figure 7 , the intercepting mesh plate 303 is arranged obliquely, with an inclination angle ranging from 3° to 5°, and the lowest part of the intercepting mesh plate 303 faces the side of the telescopic hose 305. The intercepted caked raw materials automatically slide along the slightly inclined intercepting mesh plate 303 toward the entrance of the telescopic hose 305 under the action of gravity, without the need for additional power to realize directional conveying of the caked raw materials. This avoids the accumulation of caked raw materials on the intercepting mesh plate 303, reduces the risk of blockage, and improves the efficiency of interception and reflux. At the same time, compared with a horizontal mesh plate, the cleaning frequency can be reduced.

[0031] Example Four Please refer to Figures 1-2 - Figure 4 , the stirrer 2 includes a driving structure 201 installed on the top wall of the feeding bin 1, the output end of the driving structure 201 is drivingly connected with a stirring shaft 202, and the surface of the stirring shaft 202 is installed with a plurality of stirring blades 203. These three are the basic components of the stirrer 2, and the driving structure 201 is used as a driving source to drive the stirring shaft 202 to rotate at a high speed to stir the raw materials in the feeding bin 1. On this basis, a transmission structure 204 is installed between the stirring shaft 202 and the shaft body of the spiral feeding frame 5, so that the spiral feeding frame 5 and the stirrer 2 share one driving source, realizing linkage driving, reducing the number of power sources, and reducing equipment cost and energy consumption.

[0032] The spiral feeding frame 5 further comprises a guide pipe 501 connected between the outlet end of the spiral feeding frame 5 and the feeding bin 1, and a dispersing guide plate 502 is connected to the end of the guide pipe 501 facing the inside of the feeding bin 1. The side of the dispersing guide plate 502 away from the guide pipe 501 is arranged in a bevelled manner, and the top surface of the dispersing guide plate 502 is provided with a plurality of separation strips 503. The bevelled arrangement and the separation strips 503 make the backflow of the raw materials uniformly fall into the feeding bin 1.

[0033] According to the above embodiment one, after the caked raw materials are fed upward by the spiral feeding frame 5 into the guide pipe 501, the caked raw materials automatically slide down along the inclined dispersing guide plate 502 and fall into the inside of the feeding bin 1, and the bevelled arrangement and the separation strips 503 make the caked raw materials fall apart. During the falling process of the caked raw materials, the caked raw materials will contact the upper surface of the high-speed rotating stirring blade 203.

[0034] In addition, the specific structure of the stirring blade 203 comprises a bottom support plate 2031 fixed to the surface of the stirring shaft 202, a rectangular piece 2032 arranged above the bottom support plate 2031, and a spring 2033 connected between the rectangular piece 2032 and the bottom support plate 2031. When the caked raw materials fall onto the upper surface of the rectangular piece 2032, the spring 2033 will be elastically deformed and reset, and will act on the caked raw materials in a flexible pressing manner, gradually rubbing and crushing the loose and adhered structure of the caked raw materials, rather than directly dispersing them. At the same time, the impact force acting on the rectangular piece 2032 will cause the spring 2033 to vibrate slightly, which can separate the adhered particles inside the caked raw materials, and the dispersing rate is relatively high. The contact between the rectangular piece 2032 and the caked raw materials is a flexible contact, and the contact angle can be adjusted and the vibration can assist in crushing, which can meet the dispersing requirements of all scenes from low-hardness loose caked raw materials to high-hardness dense caked raw materials. In addition, the spring 2033 can buffer most of the impact load, and the compression of the spring 2033 can also avoid the direct fracture of the bottom support plate 2031, and only cause slight deformation of the spring 2033.

[0035] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can make equivalent replacements or changes to the technical solutions and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A vacuum feeding device for effervescent tablet processing, comprising a feeding bin (1), characterized in that: The feeding bin (1) is provided with a stirrer (2), the discharge end of the feeding bin (1) is connected with a filter (3), the filter (3) is used for separating effervescent tablet powder raw materials and caked raw materials, the bottom of the filter (3) is connected with a vacuum pump (4), one side of the feeding bin (1) is connected with a spiral feeding frame (5), and the spiral feeding frame (5) is used for re-feeding the caked raw materials reserved in the filter (3) into the feeding bin (1); The filter (3) comprises a corrugated expansion pipe (301) connected to the discharge end of the feeding bin (1), the bottom of the corrugated expansion pipe (301) is connected with a hopper (302), the inner wall of the hopper (302) is provided with an intercepting mesh plate (303), an electric telescopic rod (304) is installed between the bottom of the feeding bin (1) and the hopper (302), a telescopic hose (305) is connected between one side of the hopper (302) and the spiral feeding frame (5), and the bottom wall of one end of the telescopic hose (305) towards the hopper (302) is located below the intercepting mesh plate (303), and the telescopic hose (305) is arranged in a downward inclined manner from the side towards the hopper (302) to the side towards the spiral feeding frame (5).

2. The vacuum feed device for effervescent tablet processing according to claim 1, characterized by: The inner walls of the telescopic hose (305) are provided with the obliquely arranged impact plates (3051) on both sides.

3. The vacuum feed device for effervescent tablet processing according to claim 1, characterized by: The bottom of the telescopic hose (305) and the hopper (302) are connected with a backflow hose (3052), the inner wall of one end of the backflow hose (3052) close to the telescopic hose (305) is provided with a mesh (3053), and the top surface of the mesh (3053) is consistent with the path of the bottom wall of the telescopic hose (305).

4. The vacuum feed device for effervescent tablet processing according to claim 3, characterized by: The mesh (3053) is located on the side of the impact plate (3051) away from the hopper (302), and the backflow hose (3052) is arranged in a downward inclined manner from the side towards the telescopic hose (305) to the side towards the hopper (302).

5. The vacuum feed device for effervescent tablet processing according to claim 1, characterized by: The intercepting mesh plate (303) is arranged in an inclined manner, the inclination angle of the intercepting mesh plate (303) ranges from 3° to 5°, and the lowest part of the intercepting mesh plate (303) faces the side of the telescopic hose (305).

6. The vacuum feed device for effervescent tablet processing according to claim 1, characterized by: The stirrer (2) comprises a driving structure (201) installed on the top wall of the feeding bin (1), the output end of the driving structure (201) is transmissionally connected with a stirring shaft (202), a plurality of stirring blades (203) are mounted on the surface of the stirring shaft (202), and a transmission structure (204) is mounted between the shaft body of the stirring shaft (202) and the spiral feeding frame (5).

7. The vacuum feed device for effervescent tablet processing according to claim 6, characterized by: The stirring blade (203) comprises a bottom supporting plate (2031) fixed on the surface of the stirring shaft (202), a rectangular plate (2032) is arranged above the bottom supporting plate (2031), and a spring (2033) is connected between the rectangular plate (2032) and the bottom supporting plate (2031).

8. The vacuum feed device for effervescent tablet processing according to claim 1, characterized by: The outlet end of the spiral feeding frame (5) is connected with a guide pipe (501), one end of the guide pipe (501) towards the inside of the feeding bin (1) is connected with a dispersing guide plate (502), one side of the dispersing guide plate (502) away from the guide pipe (501) is arranged in a beveling manner, and the top surface of the dispersing guide plate (502) is provided with a plurality of separation strips (503).

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