Tail gas self-purification type boiling granulation drying device

Abstract

The utility model discloses a tail gas self-purification type boiling granulation drying device. The fluidized bed granulator comprises a fluidized bed granulator and a cleaning structure, wherein the fluidized bed granulator comprises a tail gas pipe welded at the top of the fluidized bed granulator; the cleaning structure is arranged on the inner wall of the boiling granulator, the cleaning structure is provided with fan blades which are pushed by tail gas flow to rotate, and the fan blades rotate to drive the cleaning rod and the cleaning brush to rotate through the rotating rod. Tail gas generated in the fluidized bed granulator is discharged from the tail gas pipe, powerful tail gas flow can drive the fan blades and the rotating rod to rotate rapidly, the rotating rod can drive the cleaning brush to rotate rapidly at the bottom of the filter plate together to clean materials on the filter plate in real time, the number of the materials attached to the filter plate due to continuous blowing wind force is reduced, and the working efficiency is improved. The exhaust efficiency during tail gas filtration is improved, and the probability of wall sticking during granulation and drying is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of fluidized granulators, in particular to a tail gas self-purifying type fluidized granulation and drying device. Background Technique

[0002] A fluidized granulator is a machine mainly used for pharmaceutical granulation and coating. It is characterized by safe operation and high automation. Powdered materials are put into a closed container of a hopper. Due to the action of hot air flow, the powder is suspended and circulated in a fluidized state to achieve uniform mixing. At the same time, atomized binder is sprayed to wet the powder in the container, causing the powder to coagulate into loose small particles. During granulation, due to the efficient drying of the hot air flow on it, water is continuously evaporated and the powder is continuously solidified. This process is repeated to form ideal and uniform multi-porous spherical particles, completing the three processes of mixing, granulation, and drying in the container at one time;

[0003] During the granulation process, a large amount of continuous tail gas will be generated. Usually, a self-purifying tail gas structure is installed at the top of the fluidized granulator to purify the tail gas and discharge it without pollution. The purification structure can perform a series of treatments such as filtering internal raw material particles, absorbing toxic gases, and recovering heat, ensuring that while reducing raw material loss, the tail gas can also be fully purified and discharged.

[0004] A current fluidized granulator for pharmaceutical production, as described in the patent with the publication number CN220003939U, its composition includes: an equipment main body and a mixing box. An arc-shaped frame is arranged on the outer side of the lower end of the equipment main body. A mixing cylinder that can be conveniently replaced is arranged inside the mixing box. A base is arranged at the bottom of the mixing cylinder. A guiding slope is arranged on the outer side of the upper end of the base. Multiple die rollers are arranged circumferentially on the upper end of the base.

[0005] Regarding the above related technology, the applicant believes that when a fluidized granulator for pharmaceutical production is working, an electric telescopic rod is installed to drive an inner baffle to vibrate up and down through an arc-shaped plate, knocking down the materials blocked and adsorbed by the inner baffle, so that the hot air can smoothly discharge outward through the exhaust holes and the cloth bag. Although this structure can make the baffle vibrate and drop materials, in actual use, a large amount of hot air inside blows from the bottom to the top. Although the baffle can vibrate and drop materials, some materials will continuously be blown by the wind and stick to the baffle and cannot fall, resulting in a reduction in the tail gas emission efficiency, thereby increasing the probability of uneven drying of the materials and causing wall sticking. Content of the Utility Model

[0006] The purpose of the utility model is to provide a tail gas self-purifying type fluidized granulation and drying device to solve the problem that some materials will continuously be blown by the wind and stick to the baffle and cannot fall, resulting in a reduction in the tail gas emission efficiency as proposed in the above background technique.

[0007] To achieve the above object, the present utility model provides the following technical solutions: A tail gas self-purifying fluidized granulation drying device, comprising: a fluidized granulator and a cleaning structure. The fluidized granulator includes a tail gas pipe welded to the top of the fluidized granulator; the cleaning structure is disposed on the inner wall of the fluidized granulator. The cleaning structure has a fan blade driven to rotate by the tail gas airflow. The rotation of the fan blade drives the cleaning rod and the cleaning brush to rotate via a rotating rod. It also includes a feeding structure disposed on the main body of the fluidized granulator. The feeding structure includes a raw material container snap-connected to the fluidized granulator by a buckle, a circular ring groove opened at the bottom of the raw material container, a ventilation plate disposed inside the circular ring groove, a spring welded to the inner wall of the circular ring groove, and a lifting ring welded to the upper surface of the ventilation plate. The outer wall of the ventilation plate is closely attached to the bottom inner wall of the raw material container. Eight groups of springs are uniformly fixed to the inner wall of the circular ring groove. The ventilation holes on the ventilation plate are only opened on the ventilation plate within the range of the inner wall of the lifting ring. This structure enables the hot air at the bottom to enter the fluidized granulator only through the ventilation plate within a specified range, preventing the hot air from entering the circular ring groove and affecting the sealing performance of the ventilation plate and the lifting ring.

[0008] By adopting the above technical solutions, the tail gas generated by the fluidized granulator is utilized to drive the cleaning rod to rotate by the fan blade to clean the adsorbed materials, thereby achieving self-cleaning using the power of the tail gas of the fluidized granulator itself, reducing the number of materials sticking to the filter plate by the continuously blowing wind, improving the exhaust efficiency during tail gas filtration, reducing the probability of wall sticking during granulation drying. At the same time, the device reforms the original fixed welded ventilation plate structure at the bottom of the raw material container. After the raw material container is removed and moved to the elevator, it needs to be rotated 180 degrees. The ventilation plate will rotate to the top. Then, the ventilation plate is slapped, enabling the ventilation plate to vibrate up and down in the circular ring groove under the action of the spring, thereby shaking off the materials adhered to the ventilation plate and transferring the materials by the elevator, improving the convenience of the materials detaching from the ventilation plate.

[0009] Preferably, the cleaning structure includes a cross welded to the inner wall of the tail gas pipe, a rotating rod rotatably connected to the middle of the cross, a fan blade welded to the top of the rotating rod, a retaining ring welded to the inner wall of the fluidized granulator, a filter plate bolted to the bottom of the retaining ring, a plug welded to the bottom end of the rotating rod, a cleaning rod inserted into the bottom of the plug, and a cleaning brush disposed on the upper surface of the cleaning rod. The top of the cleaning brush presses against the bottom of the filter plate.

[0010] By adopting the above technical solutions, the tail gas generated in the fluidized granulator is discharged from the tail gas pipe. The strong tail gas airflow will drive the fan blade and the rotating rod to rotate rapidly. The rotating rod will drive the cleaning brush to rotate rapidly at the bottom of the filter plate to clean the materials on the filter plate in real time, reducing the number of materials sticking to the filter plate by the continuously blowing wind, improving the exhaust efficiency during tail gas filtration, and reducing the probability of wall sticking during granulation drying.

[0011] Preferably, a rectangular slot is formed at the top end of the rotating rod, and the top of the plug connector is a rectangular plug block, which is inserted into the slot and fixed by bolts.

[0012] By adopting the above technical solution, by designing a rectangular slot and a plug block for the rotating rod and the plug connector, the random rotation of the plug connector can be restricted after combination. After being fixed by bolts, the integrity of the connection between the plug connector and the rotating rod can be ensured, and the problem of incomplete cleaning by the cleaning brush due to rotational slippage during long-term rotational use can be avoided.

[0013] Preferably, screw holes are formed in the retaining ring, and the filter plate is fixed by tightening and pressing with bolts, and a sealing gasket is provided between the filter plate and the retaining ring.

[0014] By adopting the above technical solution, the filter plate is detachably fixed to the retaining ring by using bolts, which improves the convenience of subsequent cleaning and maintenance of the filter plate. At the same time, the sealing gasket provided between them can improve the sealing performance therebetween and enhance the effect during tail gas filtration.

[0015] Preferably, a bearing with the same diameter is clamped at the middle position of the filter plate, and the bottom of the rotating rod is inserted into the inner ring of the bearing.

[0016] By adopting the above technical solution, by installing a bearing on the filter plate and then cooperating with the bearing on the cross, the resistance during the rotation of the rotating rod is reduced, the efficiency of the wind power driving the fan blade to rotate is improved, and the speed of the fan blade driving the cleaning brush to rotate is increased.

[0017] Preferably, the cleaning brush is made of silica gel material, and the top of the cleaning brush abuts against the bottom of the filter plate and is slightly bent.

[0018] By adopting the above technical solution, the silica gel material has high temperature resistance and chemical stability, and can stably clean the materials in the high-temperature environment of the fluidized bed granulator, reducing the pollution to the internal materials. And the silica gel material is relatively soft and can fit well against the bottom of the filter plate, improving the cleaning effect of the cleaning brush on the filter plate.

[0019] Compared with the prior art, the beneficial effects of the present utility model are:

[0020] (1) By discharging the tail gas generated in the fluidized bed granulator from the tail gas pipe, the strong tail gas airflow will drive the fan blade and the rotating rod to rotate rapidly. The rotating rod will drive the cleaning brush to rotate rapidly at the bottom of the filter plate to clean the materials on the filter plate in real time, reducing the number of materials sticking to the filter plate by the continuous blowing wind power, improving the exhaust efficiency during tail gas filtration, and reducing the probability of wall sticking during granulation and drying;

[0021] (2) By transforming the original fixed welded ventilation plate structure at the bottom of the raw material container, after the raw material container is removed and moved to the elevator, it needs to be rotated 180 degrees. The ventilation plate will rotate and change to the top, and then the ventilation plate is slapped so that the ventilation plate can vibrate up and down in the circular ring groove under the action of the spring, so as to shake off the materials adhered to the ventilation plate and transfer the materials by the elevator, improving the convenience of the materials detaching from the ventilation plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Schematic diagram of the overall structure of the device of the present utility model;

[0023] Figure 2 Cross-sectional view of the filter plate structure of the present utility model;

[0024] Figure 3 Schematic diagram of the connection structure between the cleaning rod and the rotating rod of the present utility model;

[0025] Figure 4 Cross-sectional view of the internal structure of the raw material container of the present utility model.

[0026] In the figure: 1, fluidized bed granulator; 2, tail gas pipe; 3, cleaning structure; 301, cross; 302, rotating rod; 303, fan blade; 304, retaining ring; 305, filter plate; 306, socket; 307, cleaning rod; 308, cleaning brush; 4, loading structure; 401, raw material container; 402, circular ring groove; 403, ventilation plate; 404, spring; 405, lifting ring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0028] The following is a further detailed description of the present utility model in conjunction with the attached Figures 1-4 drawings.

[0029] Embodiment 1

[0030] Please refer to Figures 1 to 3, an embodiment provided by the present utility model: a tail gas self-purifying type fluidized granulation drying device, comprising: a fluidized granulation machine 1 and a cleaning structure 3. Using the tail gas generated by the fluidized granulation machine 1 as power, the cleaning structure 3 can utilize the tail gas to self-clean the adsorbed matter physically. The fluidized granulation machine 1 includes a tail gas pipe 2 welded to the top of the fluidized granulation machine 1. The tail gas pipe 2 can narrow the flow range of the tail gas and enhance the cleaning effect of the cleaning structure 3. The cleaning structure 3 is arranged on the inner wall of the fluidized granulation machine 1. The cleaning structure 3 has a fan blade 303 driven to rotate by the tail gas airflow. The rotation of the fan blade 303 drives the cleaning rod 307 and the cleaning brush 308 to rotate through the rotating rod 302. The tail gas is transported to the tail gas pipe 2. The flowing tail gas will cause the fan blade 303 to rotate rapidly. The rotation of the cleaning brush 308 is driven by the rotating rod 302, and the adsorbed materials can be cleaned to ensure the ventilation effect of the tail gas.

[0031] Embodiment Two

[0032] Please refer to Figure 2 and Figure 3, the cleaning structure 3 includes a cross 301 welded to the inner wall of the tail gas pipe 2. The four horizontal bars of the cross 301 are welded to the inner wall of the tail gas pipe 2. A bearing is embedded in the middle position of the cross 301, and a rotating rod 302 rotatably connected to the middle of the cross 301. One end of the rotating rod 302 is fixed to the bearing in the cross 301 by means of insertion. The rotation of the rotating rod 302 can be achieved by using the bearing to reduce the resistance during the rotation of the rotating rod 302. A fan blade 303 welded to the top of the rotating rod 302. When the fan blade 303 is subjected to the tail gas blowing from the lower part to the higher part, the blades of the fan blade 303 will be pushed by the wind force to rotate. The rotation of the fan blade 303 can drive the rotating rod 302 to rotate together, so that the cleaning brush 308 rotates together to clean the material. A retaining ring 304 welded to the inner wall of the fluidized bed granulator 1 and a filter plate 305 bolted to the bottom of the retaining ring 304. The bolt is inserted into the fixing hole of the filter plate 305 and tightened into the threaded hole of the retaining ring 304. The filter plate 305 can be pressed and fixed on the retaining ring 304 by using the bolt, so that the filter plate 305 can be disassembled for easy maintenance. A plug joint 306 inserted at the bottom end of the rotating rod 302. The plug joint 306 can be inserted into the bottom end of the rotating rod 302 and is in line with it. The rotating rod 302 and the plug joint 306 are connected and fixed by a threaded bolt. A cleaning rod 307 welded to the outer wall of the plug joint 306. There are two cleaning rods 307 symmetrically welded to the plug joint 306 and can rotate together with the plug joint 306. A cleaning brush 308 arranged on the upper surface of the cleaning rod 307. The cleaning brush 308 can be fixed to the top of the cleaning rod 307 by screwing on a bolt, which is convenient for replacement after being damaged during long-term use. The top of the cleaning brush 308 presses against the bottom of the filter plate 305. By using the rotating cleaning brush 308 to contact the bottom of the filter plate 305, the material adsorbed on the bottom of the filter plate 305 can be cleaned in real time. It also includes a loading structure 4 arranged on the main body of the fluidized bed granulator 1. The loading structure 4 includes a raw material container 401 snap-connected to the fluidized bed granulator 1 by a buckle. The main body of the fluidized bed granulator 1 has an existing buckle locking structure, which can snap and fix the raw material container 401 placed on the fluidized bed granulator 1.

[0033] The circular groove 402 is opened at the bottom of the raw material container 401. The circular groove 402 is opened inward from the inner wall at the bottom end of the raw material container 401. The ventilation plate 403 is arranged inside the circular groove 402. The size of the ventilation plate 403 is the same as the diameter of the circular groove 402, so that the outer wall of the ventilation plate 403 can fit with the inner wall of the circular groove 402 to ensure its tightness. The spring 404 is welded to the inner wall of the circular groove 402. The top end of the spring 404 is welded to the inner wall of the circular groove 402, and the bottom end of the spring 404 is welded to the ventilation plate 403. The lifting ring 405 is welded to the upper surface of the ventilation plate 403. The outer wall of the ventilation plate 403 fits tightly with the bottom inner wall of the raw material container 401. After the raw material container 401 is filled, it needs to be removed and moved to the elevator to rotate 180 degrees for transfer. By patting the ventilation plate 403, the ventilation plate 403 can vibrate up and down in the circular groove 402 under the elastic force of the spring 404, so as to shake off the materials adhered to the ventilation plate 403 and improve the convenience of the materials detaching from the ventilation plate 403.

[0034] Embodiment III

[0035] Please refer to Figure 3 and Figure 4 As shown in, eight groups of springs 404 are evenly fixed on the inner wall of the circular groove 402. The ventilation holes on the ventilation plate 403 are only opened on the ventilation plate 403 within the range of the inner wall of the lifting ring 405. This structure enables the hot air at the bottom to enter the fluid-bed granulator 1 only through the ventilation plate 403 within the specified range, avoiding the hot air entering the circular groove 402 and affecting the tightness of the ventilation plate 403 and the lifting ring 405. A rectangular slot is opened at the top end of the rotating rod 302, and the top of the plug connector 306 is a rectangular plug block. The plug block is inserted into the slot and fixed by a bolt. By designing the rectangular slot and plug block for the rotating rod 302 and the plug connector 306, the random rotation of the plug connector 306 can be restricted after combination. After being fixed by the bolt, the integrity of the connection between the plug connector 306 and the rotating rod 302 can be ensured, and the problem that the cleaning brush 308 fails to clean properly due to rotation slippage during long-term rotation use can be avoided.

[0036] Please refer to Figure 2 and Figure 3, screw holes are provided on the retaining ring 304, and the filter plate 305 is tightened and fixed by bolts. By using bolts, the filter plate 305 is detachably fixed on the retaining ring 304, which improves the convenience of subsequent cleaning and maintenance of the filter plate 305. Moreover, a sealing gasket is padded between the filter plate 305 and the retaining ring 304. Padding the sealing gasket can improve the sealing performance between them and enhance the effect during tail gas filtration. A bearing with the same diameter is clamped at the middle position of the filter plate 305, and the bottom of the rotating rod 302 is inserted into the inner ring of the bearing. By installing a bearing on the filter plate 305 and then cooperating with the bearing on the cross 301, the resistance during the rotation of the rotating rod 302 is reduced, the efficiency of the wind power driving the fan blade 303 to rotate is improved, and the speed of the fan blade 303 driving the cleaning brush 308 to rotate is increased. The cleaning brush 308 is made of silica gel material. By adopting silica gel material, it has high temperature resistance and chemical stability, and can stably clean the materials in the high-temperature environment of the fluidized bed granulator 1, reducing the pollution to the internal materials. Moreover, the top of the cleaning brush 308 abuts against the bottom of the filter plate 305 and is slightly bent. The silica gel material is relatively soft and can fit well on the bottom of the filter plate 305, improving the effect of the cleaning brush 308 cleaning the filter plate 305.

[0037] Working principle: During operation, the tail gas generated in the fluidized bed granulator 1 is discharged from the tail gas pipe 2. The powerful tail gas airflow will drive the fan blade 303 and the rotating rod 302 to rotate rapidly. The rotating rod 302 will drive the cleaning brush 308 to rotate rapidly at the bottom of the filter plate 305 to clean the materials on the filter plate 305 in real time. After granulation, the buckle on the fluidized bed granulator 1 is opened, and the raw material container 401 is moved to the elevator by the mobile rack and fixed and sealed by the buckle with the same structure at the top of the raw material container 401. The elevator will rotate 180 degrees and then pat the ventilation plate 403, so that the ventilation plate 403 can vibrate up and down in the circular groove 402 under the action of the spring 404, thereby shaking off the materials adhered to the ventilation plate 403 and transferring the materials by the elevator.

[0038] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model.

Claims

1. A tail gas self-purification type boiling granulation drying device, characterized in that: include: A fluidized bed granulator, the fluidized bed granulator comprising an exhaust pipe welded to the top of the fluidized bed granulator; A cleaning structure, wherein the cleaning structure is arranged on the inner wall of the boiling granulator, the cleaning structure has fan blades that are driven to rotate by the exhaust gas flow, and the rotation of the fan blades drives the cleaning rod and the cleaning brush to rotate via the rotating rod, and also includes a loading structure arranged on the main body of the boiling granulator, the loading structure includes a raw material container that is clamped on the boiling granulator by a buckle, an annular groove opened at the bottom of the raw material container, a ventilation plate arranged inside the annular groove, a spring welded to the inner wall of the annular groove and a lifting ring welded to the upper surface of the ventilation plate, the outer wall of the ventilation plate is tightly fitted with the bottom inner wall of the raw material container, eight groups of springs are evenly fixed on the inner wall of the annular groove, and the ventilation holes on the ventilation plate are only opened on the ventilation plate within the range of the inner wall of the lifting ring.

2. The tail gas self-purification boiling granulation drying device according to claim 1, characterized in that: The cleaning structure includes a cross welded to the inner wall of the exhaust pipe, a rotating rod rotatably connected to the middle of the cross, fan blades welded to the top of the rotating rod, a retaining ring welded to the inner wall of the boiling granulator, a filter plate connected to the bottom of the retaining ring by bolts, a plug connector plugged into the bottom end of the rotating rod, a cleaning rod welded to the outer wall of the plug connector and a cleaning brush arranged on the upper surface of the cleaning rod, and the top of the cleaning brush is pressed against the bottom of the filter plate.

3. The tail gas self-purification boiling granulation drying device according to claim 2 is characterized in that: The top of the rotating rod is provided with a rectangular slot, and the top of the plug connector is a rectangular plug block, which is plugged into the slot and fixed by bolts.

4. The tail gas self-purification boiling granulation drying device according to claim 2, characterized in that: The retaining ring is provided with screw holes for tightening and crimping the filter plate with bolts, and a sealing gasket is provided between the filter plate and the retaining ring.

5. The tail gas self-purification boiling granulation drying device according to claim 2, characterized in that: A bearing with the same diameter is clamped at the middle position of the filter plate, and the bottom of the rotating rod is plugged into the inner ring of the bearing.

6. The tail gas self-purification boiling granulation drying device according to claim 2, characterized in that: The cleaning brush is made of silica gel material, and the top of the cleaning brush is slightly bent against the bottom of the filter plate.

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