CN113028790A

CN113028790A - Pharmaceutical machinery medicine drying equipment of fast drying

Info

Publication number: CN113028790A
Application number: CN202110314061.5A
Authority: CN
Inventors: 谷志阳; 周少余
Original assignee: Wenzhou Polytechnic
Current assignee: Wenzhou Polytechnic
Priority date: 2021-03-24
Filing date: 2021-03-24
Publication date: 2021-06-25

Abstract

The invention discloses a pharmaceutical machinery medicine drying device capable of drying quickly, and particularly relates to the field of pharmaceutical machinery medicine drying devices. According to the invention, the communicating pipe is driven to rotate by the cooperation of the positive and negative motors, the gear and the main gear, the communicating pipe drives the ring plate and the output pipe to rotate, the ring plate also drives the annular fixing plate and the filter screen barrel which are limited by the positioning groove and the positioning rod to rotate through the L-shaped rod, meanwhile, the hot air blower conveys hot air to the communicating pipe and the hot air pipe through the air supply pipe to dry medicinal materials in the filter screen barrel, and the whole structure can heat and dry the medicinal materials from inside to outside in the overturning process, and the medicinal materials are not damaged by external impact in the overturning process, so that the integrity of the medicinal materials is ensured.

Description

Pharmaceutical machinery medicine drying equipment of fast drying

Technical Field

The invention relates to the field of pharmaceutical machinery medicine drying equipment, in particular to pharmaceutical machinery medicine drying equipment capable of drying quickly.

Background

In the preparation process of the Chinese herbal medicines, in order to store the Chinese herbal medicines for a long time, the picked Chinese herbal medicines are required to be placed into medicine drying equipment for drying, and the moisture in the Chinese herbal medicines is dried, so that the Chinese herbal medicines are prevented from being mildewed and deteriorated due to the fact that the medicines are damped when being stored.

The traditional medicine drying equipment is characterized in that the picked Chinese herbal medicines contain sticky soil, the Chinese herbal medicines need to be washed firstly, then the washed Chinese herbal medicines are poured into the drying equipment for drying, the Chinese herbal medicines poured into the drying equipment are stuck together under the viscosity of water on the surfaces of the Chinese herbal medicines, so that the Chinese herbal medicines are heated to different degrees in the drying process, the Chinese herbal medicines stuck in the middle are difficult to dry, and in the stirring and washing process, the Chinese herbal medicines can be damaged, so that the efficacy of the Chinese herbal medicines is influenced.

Disclosure of Invention

In order to overcome the above defects in the prior art, embodiments of the present invention provide a pharmaceutical machinery drug drying device with rapid drying, wherein a communicating pipe is driven to rotate by a positive and negative motor in cooperation with a gear and a main gear, the communicating pipe drives a ring plate and an output pipe to rotate, the ring plate also drives an annular fixing plate and a filter screen barrel to rotate, the annular fixing plate and the filter screen barrel are limited by a positioning groove and a positioning rod, and a hot air blower delivers hot air to the communicating pipe and the hot air pipe via an air supply pipe to dry the drug inside the filter screen barrel.

In order to achieve the purpose, the invention provides the following technical scheme: a pharmaceutical machinery drug drying device for fast drying comprises a box body, wherein two ring plates are arranged inside the box body, the two ring plates are symmetrically arranged around the central axis of the box body, a filter screen barrel is arranged between the two ring plates, annular fixing plates are fixedly arranged on two sides of the filter screen barrel, a filter screen plate is fixedly arranged inside the annular fixing plates, a hot air pipe is arranged inside the filter screen barrel, a plurality of air outlet holes are formed in the outer wall of the hot air pipe, two ends of the hot air pipe respectively penetrate through the two filter screen plates and extend to the outside of the two filter screen plates, a filter screen cover is sleeved outside the air outlet holes and is fixedly connected with the hot air pipe, a placing groove is formed in one side, close to the filter screen plate, of the ring plates, a communicating pipe is fixedly arranged inside the placing groove, one end, close to the filter screen plate, of the communicating pipe is contacted with one, a plurality of output pipes are uniformly arranged around the outer wall of the communicating pipe at intervals, one end of the communicating pipe, which is far away from the placing groove, penetrates through the annular plate and extends to the outside of the annular plate, an air heater is fixedly arranged at the top of the box body, air supply pipes are fixedly communicated with both sides of the air heater, one ends of the two air supply pipes, which are far away from the air heater, penetrate through both sides of the box body respectively and extend to the inside of the box body, one end of the communicating pipe, which is far away from the annular plate, extends to the inside of the air supply pipes, the outer wall of one end of the communicating pipe, which is far away from the annular plate, is movably connected with the inner walls of the air supply pipes through bearings, a master gear is arranged inside the box body, the master gear is fixedly sleeved on the outer wall of one communicating pipe, which is far away from the annular plate, one side that drive arrangement was kept away from to the box is equipped with out the tuber pipe, it runs through the box and extends to inside the box to go out the one end that the tuber pipe is close to the box, the outside cover of crown plate is equipped with the screwed pipe, the screwed pipe inner wall passes through bearing and crown plate outer wall connection, and the equal threaded connection of one end outer wall that two screwed pipes are close to has the screwed plate, and one side that two screwed plates are close to is all fixed and is equipped with the locating lever, annular fixed plate has seted up a plurality of constant head tanks near one side of screwed plate, and the one end that a plurality of locating levers are close.

In a preferred embodiment, the threaded plate has a top opened with a limiting groove, the limiting groove is provided with a limiting block, the threaded plate has a top provided with an L-shaped rod, the L-shaped rod is fixedly connected to the bottom of the end close to the threaded plate and the top of the limiting block, and the end of the L-shaped rod far away from the threaded plate is fixedly connected to the top of the end close to the air supply pipe.

In a preferred embodiment, the driving device is a positive and negative motor, the positive and negative motor is fixedly arranged on one side of the box body close to the slave gear, the output end of the positive and negative motor penetrates through the box body and extends into the box body, and the output end of the positive and negative motor is fixedly connected with the slave gear.

In a preferred embodiment, a rotating disc is fixedly arranged on one side of the threaded pipe away from the filter screen plate, and the rotating disc is sleeved outside the communicating pipe.

In a preferred embodiment, an exhaust funnel is fixedly arranged on one side of the output pipe close to the filter screen plate, and the section of the exhaust funnel is in a funnel shape.

In a preferred embodiment, a sealing ring is fixedly arranged at one end of the communicating pipe close to the hot air pipe, and the sealing ring is in contact with one end of the hot air pipe.

In a preferred embodiment, the plurality of outlet holes are evenly spaced around the outer wall of the hot blast pipe.

In a preferred embodiment, four corners of the bottom of the box body are fixedly provided with bases.

In a preferred embodiment, the front side of the screen bucket is hinged with a protective door.

In a preferred embodiment, the front side of the box body is hinged with two sealing doors, and the two sealing doors are symmetrically arranged about the central axis of the box body.

The invention has the technical effects and advantages that:

1. according to the invention, the communicating pipe is driven to rotate by the cooperation of the positive and negative motors, the gear and the main gear, the communicating pipe drives the ring plate and the output pipe to rotate, the ring plate also drives the annular fixing plate and the filter screen barrel which are limited by the positioning groove and the positioning rod to rotate through the L-shaped rod, meanwhile, the hot air blower conveys hot air to the communicating pipe and the hot air pipe through the air supply pipe to dry medicinal materials in the filter screen barrel, and the whole structure can heat and dry the medicinal materials from inside to outside in the overturning process, and the medicinal materials are not damaged by external impact in the overturning process, so that the integrity of the medicinal materials is ensured.

2. The threaded plate limited by the L-shaped rod, the limiting groove and the limiting block is driven to move by rotating the threaded pipe, and the positioning rod on the threaded plate is driven to be separated from or connected with the positioning groove in the moving process, so that the filter screen barrel is convenient to disassemble during separation, and the filter screen barrel is convenient to install during connection.

Drawings

Fig. 1 is a sectional view of the overall structure of the present invention.

FIG. 2 is an enlarged view of portion A of FIG. 1 according to the present invention.

Fig. 3 is an enlarged view of portion B of fig. 1 according to the present invention.

FIG. 4 is a side view of the ring plate, threaded pipe, and threaded plate of the present invention.

FIG. 5 is a front view of the hot air duct and the outlet of the present invention.

Fig. 6 is a front view of the screen cylinder, annular retaining plate and L-shaped rod of the present invention.

Fig. 7 is a perspective view of the overall structure of the present invention.

The reference signs are: 1. a box body; 2. a ring plate; 3. a screen barrel; 4. an annular fixed plate; 5. a filter screen plate; 6. a hot air pipe; 7. an air outlet; 8. a filter screen cover; 9. a placement groove; 10. a communicating pipe; 11. an output pipe; 12. a hot air blower; 13. an air supply pipe; 14. a main gear; 15. a slave gear; 16. an air outlet pipe; 17. a threaded pipe; 18. a thread plate; 19. positioning a rod; 20. positioning a groove; 21. a limiting groove; 22. a limiting block; 23. an L-shaped rod; 24. a positive and negative motor; 25. a turntable; 26. an exhaust funnel; 27. and (5) sealing rings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to the attached drawings 1-7 of the specification, the pharmaceutical machinery drug drying device for fast drying of the embodiment comprises a box body 1, two ring plates 2 are arranged inside the box body 1, the two ring plates 2 are symmetrically arranged about the central axis of the box body 1, a filter screen barrel 3 is arranged between the two ring plates 2, annular fixing plates 4 are fixedly arranged on both sides of the filter screen barrel 3, a filter screen plate 5 is fixedly arranged inside the annular fixing plates 4, a hot air pipe 6 is arranged inside the filter screen barrel 3, a plurality of air outlet holes 7 are formed in the outer wall of the hot air pipe 6, so that drug inside the filter screen barrel 3 can be dried conveniently, both ends of the hot air pipe 6 respectively penetrate through the two filter screen plates 5 and extend to the outside of the two filter screen plates 5, a filter screen cover 8 is sleeved outside the air outlet holes 7, so that drug particles inside the hot air pipe 6 are prevented from entering, and the filter screen cover 8 is fixedly connected with the, a placing groove 9 is formed in one side of the ring plate 2 close to the filter screen plate 5, communicating pipes 10 are fixedly arranged in the placing groove 9, one end of each communicating pipe 10 close to the filter screen plate 5 is in contact with one end of each hot air pipe 6, the outer wall of each communicating pipe 10 is fixedly communicated with a plurality of output pipes 11, the output pipes 11 are uniformly arranged around the outer wall of each communicating pipe 10 at intervals, one end of each communicating pipe 10 far away from the placing groove 9 penetrates through the ring plate 2 and extends to the outside of the ring plate 2, a hot air blower 12 is fixedly arranged at the top of the box body 1, air supply pipes 13 are fixedly communicated with two sides of each hot air blower 12, one ends of the two air supply pipes 13 far away from the hot air blower 12 respectively penetrate through two sides of the box body 1 and extend to the inside of the box body 1, one end of each communicating pipe 10 far away from the ring plate 2 extends to, a main gear 14 is arranged inside the box body 1, the main gear 14 is fixedly sleeved on the outer wall of one end of one communicating pipe 10 far away from the annular plate 2, a secondary gear 15 is meshed at the bottom of the main gear 14, the secondary gear 15 is connected with the inner wall of one side of the bottom of the box body 1 through a rotating shaft, a driving device is fixedly arranged on one side of the box body 1 close to the secondary gear 15, the driving device is arranged at the bottom of an air supply pipe 13, an air outlet pipe 16 is arranged on one side of the box body 1 far away from the driving device, one end of the air outlet pipe 16 close to the box body 1 penetrates through the box body 1 and extends into the box body 1, a threaded pipe 17 is sleeved outside the annular plate 2, the inner wall of the threaded pipe 17 is connected with the outer wall of the annular plate 2 through a bearing, threaded plates 18 are in threaded connection with the outer walls of one ends close to the two threaded pipes 17, positioning rods 19 are fixedly, inside a plurality of locating levers 19 are close to the one end of threading board 18 and extend to a plurality of constant head tanks 20 respectively, through the setting of locating lever 19 and constant head tank 20, can restrict annular fixed plate 4, make annular fixed plate 4 can rotate along with communicating pipe 10 through L shape pole 23, dry the inside medicinal material of filter screen bucket 3.

Further, drive arrangement is positive and negative motor 24, positive and negative motor 24 is fixed to be set up in the box 1 and is close to the one side from gear 15, positive and negative motor 24 output runs through box 1 and extends to the box 1 inside, positive and negative motor 24 output with from gear 15 fixed connection, drive from gear 15 by positive and negative motor and rotate, then drive main gear 14 by following gear 15 and rotate, main gear 14 drives communicating pipe 10 again and rotates.

Further, the fixed hopper 26 that is equipped with of one side that output tube 11 is close to filter screen plate 5, the hopper 26 cross-section that exhausts sets up to the infundibulate fixed hopper 26 that is equipped with of one side that communicating pipe 10 is close to filter screen plate 5, the hopper 26 cross-section that exhausts sets up to the infundibulate, through the infundibulate setting of the hopper that exhausts, makes output tube 11's the area of airing exhaust bigger, has improved the heated area of medicinal material, can dry 3 inside medicinal materials of more effectual filter screen bucket.

Further, the fixed sealing washer 27 that is equipped with of one end that is close to hot-blast main 6 communicating pipe 10, sealing washer 27 contacts with hot-blast main 6 one end, and through the setting of sealing washer 27, makes communicating pipe 10 and hot-blast main 6 contact inseparabler, lets hot-blast can direct supply hot-blast main 6, exports the medicinal material for filter screen bucket 3 inside by hot-blast main 6.

Further, a plurality of exhaust vents 7 encircle the even interval distribution of 6 outer walls of hot-blast main, and the even setting of exhaust vent makes the hot-blast ability in the hot-blast main 6 evenly export for the inside medicinal material of filter screen bucket 3, can make the even being heated of medicinal material.

Furthermore, the four corners of the bottom of the box body 1 are fixedly provided with bases, so that the stability of the whole structure is improved.

Further, 3 front sides of filter screen bucket are articulated to have a guard gate, are convenient for place 3 insides of filter screen bucket with the medicinal material and take out filter screen bucket 3 with the medicinal material, and through the setting of guard gate, have strengthened the protection to 3 inside medicinal materials of filter screen bucket.

Further, 1 front side of box articulates there are two sealing door, and two sealing door set up about 1 center axis symmetry of box, are convenient for dry the medicinal material of inside, and through the setting of sealing door, make the inside heat of box can not be excessive, guarantee the inside temperature of box.

The implementation scenario is specifically as follows: the user puts the medicinal material into the filter screen barrel 3 by opening the protective door on the filter screen barrel 3, then the user closes the protective door, then the user starts the hot air blower 12 and the positive and negative motor 24, the positive and negative motor 24 drives the communicating pipe 10 to rotate by meshing the gear 15 and the master gear 14, the communicating pipe 10 drives the ring plate 2 to rotate while rotating, the ring plate 2 drives the filter screen barrel 3 to rotate by matching the L-shaped rod 23, the positioning rod 19 and the positioning groove 20, the filter screen barrel 3 also drives the medicinal material inside to roll positively and negatively while rotating, in the rotating process, the hot air blower 12 conveys the hot air into the communicating pipe 10 through the air supply pipe 13, then the communicating pipe 10 conveys the hot air into the output pipes 11 in turn, the medicinal material is dried by the output pipes 11 from the side of the filter screen plate 5, the communicating pipe 10 also conveys the hot air into the hot air pipe 6, and then outputs the hot air into the filter screen barrel 3 through the air outlet 7, carry out drying process to the inside medicinal material of filter screen bucket 3, overall structure enables the medicinal material and dries from inside to outside being heated at the in-process of upset to at the in-process of upset, can not receive external striking and take place to damage, guaranteed the integrality of medicinal material.

Referring to the attached

drawings

1, 3, 4 and 6 of the specification, the pharmaceutical machinery medicine drying device for fast drying of the embodiment is characterized in that a limiting groove 21 is formed in the top of the threaded plate 18, a limiting block 22 is arranged in the limiting groove 21, an L-shaped rod 23 is arranged at the top of the threaded plate 18, the bottom of one end, close to the threaded plate 18, of the L-shaped rod 23 is fixedly connected with the top of the limiting block 22, the threaded plate can be limited through the limiting block, the limiting groove and the L-shaped rod, linear motion of the threaded plate is enabled to be achieved, one end, far away from the threaded plate 18, of the L-shaped rod 23 is fixedly connected with the top of one end, close to the air supply pipe 13, of the communicating pipe 10, the threaded plate 18 is limited, the locating rod 19 on the threaded plate is enabled to move linearly, and is embedded into the.

Further, the fixed carousel 25 that is equipped with in one side that filter plate 5 was kept away from to screwed pipe 17, the outside of communicating pipe 10 is located to carousel 25 cover, and the user of being convenient for operates, drives screwed pipe 17 and rotates, and the screwed plate 18 on it is driven by screwed pipe 17 again removes easy operation, convenient to use.

The implementation scenario is specifically as follows: the user drives the threaded pipe 17 to rotate by rotating the turntable 25, the threaded pipe 17 drives the threaded plate 18 limited by the L-shaped rod 23 to move outwards when rotating, and drives the positioning rod 19 on the threaded pipe to be separated from the positioning groove 20 on the annular fixing plate 4 in the moving process, so that the annular fixing plate 4 is not limited, the user can take down the filter screen barrel 3 at the moment, then open the protective door to take down the internal medicinal materials, and simultaneously can clean the filter screen barrel 3 to avoid influencing the drying of the next batch of medicines, after the cleaning is finished, the user places the filter screen barrel 3 between the two annular plates 2, then drives the threaded pipe 17 to rotate by the turntable 25, the threaded pipe 17 drives the threaded plate 18 limited by the L-shaped rod 23, the limiting block 22 and the limiting groove 21 to move inwards, and drives the positioning rod 19 on the threaded pipe to be embedded into the positioning groove 20 in the moving process, carry out spacing fixed to annular fixed plate 4, its setting through L shape pole 23 makes communicating pipe 10 also can drive L shape pole 23 and rotate, and L shape pole 23 drives annular fixed plate 4 through spacing groove 21 and stopper 22's cooperation and rotates, and overall structure is convenient for install and dismantle filter screen bucket 3.

The points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed;

secondly, the method comprises the following steps: in the drawings of the disclosed embodiments of the invention, only the structures related to the disclosed embodiments are referred to, other structures can refer to common designs, and the same embodiment and different embodiments of the invention can be combined with each other without conflict;

and finally: the above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that are within the spirit and principle of the present invention are intended to be included in the scope of the present invention.

Claims

1. The utility model provides a pharmaceutical machinery medicine drying equipment of rapid drying, includes box (1), its characterized in that: the box body (1) is internally provided with two ring plates (2), the two ring plates (2) are symmetrically arranged about a central axis of the box body (1), a filter screen barrel (3) is arranged between the two ring plates (2), both sides of the filter screen barrel (3) are fixedly provided with annular fixing plates (4), the annular fixing plates (4) are internally and fixedly provided with filter screen plates (5), the filter screen barrel (3) is internally provided with hot air pipes (6), the outer wall of each hot air pipe (6) is provided with a plurality of air outlet holes (7), both ends of each hot air pipe (6) respectively penetrate through the two filter screen plates (5) and extend to the outside of the two filter screen plates (5), the outside of each air outlet hole (7) is sleeved with a filter screen cover (8), the filter screen covers (8) are fixedly connected with the hot air pipes (6), one side of each ring plate (2), which is close to the filter screen plate (5), is, standing groove (9) inside fixed communicating pipe (10) that is equipped with, communicating pipe (10) are close to the one end of filter plate (5) and are contacted with hot-blast main (6) one end, communicating pipe (10) outer wall fixed intercommunication has a plurality of output tubes (11), and a plurality of output tubes (11) encircle even interval setting of communicating pipe (10) outer wall, the one end of keeping away from standing groove (9) of communicating pipe (10) runs through crown plate (2) and extends to crown plate (2) outside, fixed air heater (12) that is equipped with in box (1) top, air heater (12) both sides all fixed intercommunication has supply tuber pipe (13), and the one end that air heater (12) were kept away from in two supply tuber pipes (13) runs through box (1) both sides respectively and extends to inside box (1), the one end that the crown plate (2) was kept away from in communicating pipe (10) extends to inside supply tuber pipe (13), the one end outer wall that the crown plate (2) was kept away from in communicating pipe (10) passes through bearing The movable connection, the inside master gear (14) that is equipped with of box (1), master gear (14) are fixed to be cup jointed in one of them communicating pipe (10) and keep away from the one end outer wall of crown plate (2), the meshing has from gear (15) master gear (14) bottom, from gear (15) through pivot and box (1) bottom one side inner wall connection, box (1) is close to the fixed drive arrangement that is equipped with in one side from gear (15), drive arrangement sets up in air supply pipe (13) bottom, box (1) keeps away from one side of drive arrangement and is equipped with out tuber pipe (16), the one end that goes out tuber pipe (16) and is close to box (1) runs through box (1) and extends to inside box (1), crown plate (2) outside cover is equipped with screwed pipe (17), screwed pipe (17) inner wall passes through bearing and crown plate (2) outer wall connection, the equal threaded connection of one end outer wall that two screwed pipes (17) are close to has screw plate (18), and one side that two screw plate (18) are close to mutually all fixes being equipped with locating lever (19), a plurality of constant head tanks (20) have been seted up to one side that annular fixed plate (4) are close to screw plate (18), and the one end that a plurality of locating levers (19) are close to screw plate (18) extends inside a plurality of constant head tanks (20) respectively.

2. The pharmaceutical machinery drying device for pharmaceutical machinery for fast drying according to claim 1, wherein: spacing groove (21) have been seted up at thread plate (18) top, spacing groove (21) inside is equipped with stopper (22), thread plate (18) top is equipped with L shape pole (23), L shape pole (23) are close to the one end bottom and stopper (22) top fixed connection of thread plate (18), the one end that thread plate (18) were kept away from in L shape pole (23) and communicating pipe (10) are close to the one end top fixed connection of air feed pipe (13).

3. The pharmaceutical machinery drying device for pharmaceutical machinery for fast drying according to claim 1, wherein: the driving device is a positive and negative motor (24), the positive and negative motor (24) is fixedly arranged on one side of the box body (1) close to the driven gear (15), the output end of the positive and negative motor (24) penetrates through the box body (1) and extends to the inside of the box body (1), and the output end of the positive and negative motor (24) is fixedly connected with the driven gear (15).

4. The pharmaceutical machinery drying device for pharmaceutical machinery for fast drying according to claim 1, wherein: one side of the threaded pipe (17) far away from the filter screen plate (5) is fixedly provided with a turntable (25), and the turntable (25) is sleeved outside the communicating pipe (10).

5. The pharmaceutical machinery drying device for pharmaceutical machinery for fast drying according to claim 1, wherein: an exhaust funnel (26) is fixedly arranged on one side of the output pipe (11) close to the filter screen plate (5), and the section of the exhaust funnel (26) is funnel-shaped.

6. The pharmaceutical machinery drying device for pharmaceutical machinery for fast drying according to claim 1, wherein: and a sealing ring (27) is fixedly arranged at one end of the communicating pipe (10) close to the hot air pipe (6), and the sealing ring (27) is contacted with one end of the hot air pipe (6).

7. The pharmaceutical machinery drying device for pharmaceutical machinery for fast drying according to claim 1, wherein: a plurality of air outlet holes (7) are uniformly distributed at intervals around the outer wall of the hot air pipe (6).

8. The pharmaceutical machinery drying device for pharmaceutical machinery for fast drying according to claim 1, wherein: the four corners of the bottom of the box body (1) are fixedly provided with bases.

9. The pharmaceutical machinery drying device for pharmaceutical machinery for fast drying according to claim 1, wherein: the front side of the filter screen barrel (3) is hinged with a protective door.

10. The pharmaceutical machinery drying device for pharmaceutical machinery for fast drying according to claim 1, wherein: the front side of the box body (1) is hinged with two sealing doors, and the two sealing doors are symmetrically arranged about the central axis of the box body (1).