Environment-friendly self-cleaning boiling dryer for production of medical intermediates

Abstract

The utility model discloses an environment-friendly self-cleaning boiling dryer for producing medical intermediates, and relates to the technical field of medical manufacturing equipment, in particular to an environment-friendly self-cleaning boiling dryer for producing medical intermediates, which comprises a boiling bed and a feeding bin positioned at the bottom of the boiling bed, an exhaust inlet is fixed to the right side of the heating bin, air can enter the boiling bed through the exhaust inlet, a filter layer is arranged in the heating bin, a dehumidification plate is arranged on the left side of the filter layer, and a heater which is located in an inner cavity of the heating bin and controlled by a control panel is installed on one side of the dehumidification plate. According to the environment-friendly self-cleaning type boiling dryer for medical intermediate production, water mist sprayed by a water mist atomizer arranged in the treatment layer is combined with impurities and dust in hot air to be treated, so that the impurities and the dust are gathered, then the gathered objects are adsorbed by a dust collection plate in the recycling barrel, and the impurities contained in air are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of pharmaceutical manufacturing equipment, in particular to an environmentally friendly self-cleaning boiling dryer for the production of pharmaceutical intermediates. Background Art

[0002] Pharmaceutical intermediates are primarily chemical raw materials or products used in the synthesis of drugs. This process involves sequentially passing pharmaceutical intermediates containing 1% to 25% salt through microfiltration and ultrafiltration membranes to remove macromolecular particles, organic matter, and colloids. Nanofiltration constant-volume desalination technology is then used to desalinate and concentrate the pharmaceutical intermediates. During this process, economically valuable substances in the permeate can be selectively recovered.

[0003] In the pharmaceutical production process, the boiling dryer is an indispensable part. After the wet material of the pharmaceutical intermediate is added to the feeding hopper, the boiling dryer uses the hot air and wind pressure of the heating layer to dry the wet material into powder, and finally takes out the processed material. However, in this process, the hot air produced by the boiling dryer will contain certain impurities. Expelling this hot air will pollute the working environment of the boiling dryer. The discharge of hot air will also cause a decrease in the surrounding air quality and cause harm to the operator. Based on this, we propose an environmentally friendly self-cleaning boiling dryer for the production of pharmaceutical intermediates. Utility Model Content

[0004] The utility model provides an environmentally friendly self-cleaning boiling dryer for producing pharmaceutical intermediates, which solves the problems raised by the above-mentioned background technology.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: an environmentally friendly self-cleaning fluidized bed dryer for the production of pharmaceutical intermediates, comprising a fluidized bed and a feeding bin located at the bottom of the fluidized bed, the bottom of the feeding bin being connected to a heating bin, an air intake being fixed on the right side of the heating bin, and air entering the fluidized bed through the air intake, a filter layer being provided inside the heating bin, a dehumidification plate being provided on the left side of the filter layer, and a heater being installed on one side of the dehumidification plate and being located in the inner cavity of the heating bin and controlled by a control panel;

[0006] An air guide sleeve connected to the interior of the fluidized bed is installed at the hot air outlet of the fluidized bed, and the interior of the air guide sleeve is provided with an insulation pipe wrapped around the fluidized bed. A connector is fixedly connected to the end of the insulation pipe, and a treatment layer arranged on the side of the air guide sleeve is installed at one end of the connector. A water mist atomizer spraying downward is installed inside the treatment layer, and a recovery cylinder is fixedly installed below the treatment layer. A dust collection plate inserted through a groove is provided inside the recovery cylinder, and an exhaust fan connected to the interior of the recovery cylinder is provided on the outside of the recovery cylinder.

[0007] Optionally, a motor is fixed inside the feeding bin through a bracket, a main rotating shaft is fixedly connected to the output shaft of the motor, a secondary rotating shaft that can rotate along with the main rotating shaft is connected to the bottom of the main rotating shaft, a stirring blade is fixed on the surface of the main rotating shaft, and a scraper is fixed on the surface of the secondary rotating shaft.

[0008] Optionally, a support frame for supporting the feeding bin is fixedly connected to the outside of the feeding bin, and a universal wheel is installed at the bottom of the support frame. A pin is installed at the top of the feeding bin for contacting the bottom of the boiling bed to limit and fix the boiling bed.

[0009] Optionally, a peephole for observing the internal situation is provided on the outside of the boiling bed.

[0010] Optionally, the bottom of the recovery cylinder is fixed to the top of the heating chamber, and the dust collected inside the recovery cylinder can be cleaned by disassembling the exhaust fan.

[0011] Optionally, the insulation pipe is flat, and the insulation pipe is in full contact with the side of the boiling bed, and an insulation layer is provided on the outside of the insulation pipe.

[0012] Optionally, there are no less than three dust collection plates, and the dust collection plates are arranged at an angle, and adhesive sheets for absorbing dust are provided on the dust collection plates.

[0013] The utility model has the following beneficial effects:

[0014] 1. This environmentally friendly, self-cleaning fluidized bed dryer for the production of pharmaceutical intermediates stores hot air through an air guide sleeve connected to one side of the fluidized bed. The heat-insulating pipe connected to the air guide sleeve transports the hot air to the processing layer. The flat design of the heat-insulating pipe increases the contact area. During the transmission process, the heat of the hot air is transferred to the interior of the fluidized bed through the contact between the heat-insulating pipe and the fluidized bed, slowing down the temperature drop inside the fluidized bed. At the same time, it reduces the use of heaters inside the heating layer and reduces the power consumption of the fluidized bed dryer.

[0015] 2. This environmentally friendly self-cleaning boiling dryer for the production of pharmaceutical intermediates combines the water mist sprayed by the water mist atomizer inside the treatment layer with the impurities and dust inside the hot air to be treated, causing the impurities and dust to accumulate. These aggregates are then adsorbed by the dust collection plates inside the recovery tube. The dust collection plates have a certain inclination angle inside the recovery tube, which increases the contact area between the dust collection plates and the air. The internal treatment of the recovery tube is composed of three dust collection plates in opposite directions, which can repeatedly contact the air and reduce the impurities contained in the air.

[0016] 3. The environmentally friendly self-cleaning boiling dryer for the production of pharmaceutical intermediates uses a scraper installed inside the feeding bin to treat the feeding bin and complete self-cleaning. At the same time, it plays the role of stirring the material during the processing of pharmaceutical intermediates, so that the material is fully in contact with the hot air. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the utility model;

[0018] Figure 2 This is a structural diagram of the feeding bin of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the heating chamber of the utility model;

[0020] Figure 4 This is a structural diagram of the air guide sleeve of the utility model;

[0021] Figure 5 This is a schematic structural diagram of the processing layer of the utility model;

[0022] Figure 6 This is a schematic structural diagram of the recycling cylinder layer of the utility model.

[0023] In the figure: 1. Boiling bed; 2. Feeding bin; 3. Heating bin; 4. Air intake; 5. Filter layer; 6. Dehumidification plate; 7. Heater; 8. Air guide sleeve; 9. Insulation pipe; 10. Connector; 11. Treatment layer; 12. Water mist atomizer; 13. Recovery cylinder; 14. Dust collection plate; 15. Exhaust fan; 16. Motor; 17. Main rotating shaft; 18. Secondary rotating shaft; 19. Stirring blade; 20. Scraper; 21. Support frame; 22. Pin; 23. Sight glass. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] See also Figures 1 to 3 The utility model provides a technical solution: an environmentally friendly self-cleaning fluidized bed dryer for the production of pharmaceutical intermediates, comprising a fluidized bed 1 and a feeding bin 2 located at the bottom of the fluidized bed 1. The bottom of the feeding bin 2 is connected to a heating bin 3 for heating the externally inhaled gas. An air inlet 4 for inhaling external air is fixed on the right side of the heating bin 3. Air can enter the fluidized bed 1 for the drying process of the main pharmaceutical intermediates through the air inlet 4. A filter layer 5 for filtering impurities in the air is provided inside the heating bin 3. A dehumidification plate 6 for dehumidifying the moisture in the air is provided on the left side of the filter layer 5. A heater 7 for heating the air, which is controlled by a control panel and located in the inner cavity of the heating bin 3, is installed on one side of the dehumidification plate 6.

[0026] See also Figures 1 to 4 5. An air guide sleeve 8 is installed at the hot air outlet of the boiling bed 1 and is interconnected with the interior thereof for temporarily storing the hot air inside the boiling bed 1. An insulation pipe 9 is provided inside the air guide sleeve 8 and wrapped around the boiling bed 1. The insulation pipe 9 is flattened to increase the contact area with the boiling bed 1, and the insulation pipe 9 wraps the boiling bed 1 to increase the time for the hot air to be transported in the insulation pipe 9, which also keeps the boiling bed 1 warm for a long time. A connector 10 is fixedly connected to the end of the insulation pipe 9, and a processing layer 11 is installed on one end of the connector 10 and is arranged on the side of the air guide sleeve 8 for storing the hot air to be processed.

[0027] See also Figures 4 to 6 A water mist atomizer 12 is installed inside the processing layer 11, which sprays water mist downward to combine with the dust and impurities in the hot air, and a recovery cylinder 13 is fixedly installed below the processing layer 11. A detachable dust collection plate 14 is provided inside the recovery cylinder 13, which is inserted through a groove. The dust collection plate 14 is in contact with the processed hot air to absorb impurities processed by the water mist atomizer 12 above. An exhaust fan 15 is provided on the outside of the recovery cylinder 13, which is connected to the inside of the recovery cylinder 13 to discharge the processed hot air out of the machine body.

[0028] See also Figure 2 A motor 16 for controlling a main rotating shaft 17 and a secondary rotating shaft 18 is fixed to the inside of the feeding bin 2 through a bracket. The main rotating shaft 17 is fixedly connected to the output shaft of the motor 16. The bottom of the main rotating shaft 17 is connected to a secondary rotating shaft 18 that can rotate with the main rotating shaft 17. A stirring blade 19 that contacts the wet material during the drying process is fixed to the surface of the main rotating shaft 17. The rotation of the stirring blade 19 drives the rotation of the wet material, so that the wet material can better contact with the hot air and avoid the problem of accumulation of wet material. A scraper 20 for collecting the residue inside the feeding bin 2 is fixed to the surface of the secondary rotating shaft 18.

[0029] See also Figure 1 The outer side of the feeding bin 2 is fixedly connected to a support frame 21 for supporting it, and a universal wheel is installed at the bottom of the support frame 21 to facilitate the movement of the feeding bin 2. The top of the feeding bin 2 is installed with a pin 22 that contacts the bottom of the boiling bed 1 to limit and fix the boiling bed 1. The pin 22 is fixed by rotation, so that the boiling bed 1 and the feeding bin 2 are a closed space during the drying process, ensuring the purity of the wet material.

[0030] See also Figure 1 A peephole 23 for observing the internal situation is provided on the outside of the boiling bed 1.

[0031] See also Figures 1 to 6The bottom of the recovery tube 13 is fixed to the top of the heating chamber 3, and the dust collected inside the recovery tube 13 can be cleaned by disassembling the exhaust fan 15. The dust is processed after the boiling dryer completes the drying process.

[0032] See also Figure 1 The insulation pipe 9 is flat and is in full contact with the side of the fluidized bed 1, so that the heat of the hot air inside the insulation pipe 9 is transferred to the fluidized bed 1. At the same time, an insulation layer is provided on the outside of the fluidized bed 1.

[0033] See also Figures 1 to 6 There are no less than three dust collection plates 14, and the dust collection plates 14 are arranged at an angle to increase the contact area between the dust collection plates and the hot air to be processed, so as to better absorb impurities in the air. At the same time, an adhesive sheet for adhering dust is provided on the dust collection plates 14 to ensure the adsorption effect of the dust collection plates 14, and the dust collection plates 14 are embedded in the grooves and can be taken out from the grooves to wipe and clean the surface dust. When the dust collection plates 14 are taken out, the grooves of the dust collection plates 14 contact the surface of the dust collection plates 14 to retain the dust on the surface of the dust collection plates 14, thereby achieving the self-cleaning effect of the dust collection plates 14.

[0034] To sum up, the environmentally friendly self-cleaning boiling dryer for the production of pharmaceutical intermediates is used. When the wet material is filled into the feeding bin 2, the pin 22 is fixed to the bottom of the boiling bed 1, the air intake port 4 is opened to inhale the air, and the external air is subjected to dust removal and dehumidification treatment through the filter layer 5 and the dehumidification plate 6 inside the heating bin 3. The hot air passes through the bottom of the feeding bin 2 to dry the wet material. At the same time, the motor 16 inside the feeding bin 2 is started to drive the main rotating shaft 17 to rotate, and the stirring blade 19 of the main rotating shaft 17 starts to stir the wet material. The hot air in the production process is transported to the processing layer 11 through the insulation pipe 9 inside the air guide sleeve 8. The water mist atomizer 12 inside the processing layer 11 processes the hot air, and then the impurities are adsorbed by the dust collection plate 14 inside the recovery cylinder 13 to complete the treatment. Finally, the treated air is discharged through the exhaust fan 15 outside the recovery cylinder 13.

[0035] During self-cleaning: the motor 16 starts the auxiliary rotating shaft 18 inside the feeding bin 2 to drive the scraper 20 to clean the interior, then the feeding bin 2 is opened to remove dirt, the dust collection plate 14 is pulled out along the internal groove to wipe, the dirt inside the recovery cylinder 13 is dumped and the dust collection plate 14 is returned to its original position to complete the overall self-cleaning.

[0036] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed and operate in a specific direction. Therefore, they should not be understood as limiting the present invention. The terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. In addition, unless otherwise expressly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, they can be fixedly connected, detachably connected, or integrally connected; they can be mechanically connected or electrically connected; they can be directly connected or indirectly connected through an intermediate medium, or they can be internal communication between two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Furthermore, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0037] Although the 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An environmentally friendly self-cleaning fluidized bed dryer for producing pharmaceutical intermediates, comprising a fluidized bed (1) and a feeding bin (2) located at the bottom of the fluidized bed (1), characterized in that: The bottom of the feeding bin (2) is connected to a heating bin (3), an air inlet (4) is fixed on the right side of the heating bin (3), and air can enter the interior of the fluidized bed (1) through the air inlet (4). A filter layer (5) is provided inside the heating bin (3), a dehumidification plate (6) is provided on the left side of the filter layer (5), and a heater (7) is installed on one side of the dehumidification plate (6) and is located in the inner cavity of the heating bin (3) and is controlled by a control panel; The hot air outlet of the fluidized bed (1) is provided with an air guide sleeve (8) which is interconnected with the interior thereof, the interior of the air guide sleeve (8) is provided with an insulation pipe (9) which surrounds the fluidized bed (1), the end of the insulation pipe (9) is fixedly connected with a connector (10), one end of the connector (10) is provided with a treatment layer (11) which is arranged on the side of the air guide sleeve (8), a water mist atomizer (12) which sprays downward is provided inside the treatment layer (11), and a recovery cylinder (13) is fixedly provided below the treatment layer (11), a dust collecting plate (14) which is inserted through a groove is provided inside the recovery cylinder (13), and an exhaust fan (15) which is connected to the interior of the recovery cylinder (13) is provided on the outside of the recovery cylinder (13).

2. The environmentally friendly self-cleaning boiling dryer for producing pharmaceutical intermediates according to claim 1, characterized in that: A motor (16) is fixed inside the feeding bin (2) via a bracket, a main rotating shaft (17) is fixedly connected to the output shaft of the motor (16), a secondary rotating shaft (18) that can rotate along with the main rotating shaft (17) is connected to the bottom of the main rotating shaft (17), a stirring blade (19) is fixed on the surface of the main rotating shaft (17), and a scraper (20) is fixed on the surface of the secondary rotating shaft (18).

3. The environmentally friendly self-cleaning boiling dryer for producing pharmaceutical intermediates according to claim 1, characterized in that: The outer side of the feeding bin (2) is fixedly connected to a support frame (21) for supporting the feeding bin, and a universal wheel is installed at the bottom of the support frame (21). The top of the feeding bin (2) is installed with a pin (22) that contacts the bottom of the fluidized bed (1) to limit and fix the fluidized bed (1).

4. The environmentally friendly self-cleaning boiling dryer for producing pharmaceutical intermediates according to claim 1, characterized in that: A peephole (23) for observing the internal situation is provided on the outer side of the boiling bed (1).

5. The environmentally friendly self-cleaning boiling dryer for producing pharmaceutical intermediates according to claim 1, characterized in that: The bottom of the recovery cylinder (13) is fixed to the top of the heating chamber (3), and the dust collected inside the recovery cylinder (13) can be cleaned by disassembling the exhaust fan (15).

6. The environmentally friendly self-cleaning boiling dryer for producing pharmaceutical intermediates according to claim 1, characterized in that: The heat-insulating pipe (9) is flat, and the heat-insulating pipe (9) is in full contact with the side of the boiling bed (1), and a heat-insulating layer is provided on the outside of the boiling bed (1).

7. The environmentally friendly self-cleaning boiling dryer for producing pharmaceutical intermediates according to claim 1, characterized in that: There are no less than three dust collecting plates (14), and the dust collecting plates (14) are arranged obliquely. At the same time, adhesive sheets for adhering dust are arranged on the dust collecting plates (14).

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