Full-automatic drying box device for coal sampling and sample preparation

Abstract

The invention discloses a full-automatic drying box device for coal sampling and sample preparation, and relates to the technical field of drying, the full-automatic drying box device comprises an equipment shell, six door body structures are mounted on one side of the equipment shell, heating boxes and pressure sensors are arranged on the sides, close to the equipment shell, of the six door body structures, exhaust valves are fixedly mounted on the heating boxes, and the exhaust valves are connected with the pressure sensors. A plurality of first air guide pipes are rotationally installed in the heating box, a plurality of exhaust holes are formed in the outer sides of the first air guide pipes, and a flow dividing box is arranged between the first air guide pipes, so that the first air guide pipes rotate in a reciprocating mode within a certain angle, and high-temperature airflow exhausted by the exhaust holes formed in the first air guide pipes rotates in a reciprocating mode within a certain angle; the high-temperature airflow discharge angle is changed, the contact area of the high-temperature airflow and the coal sample is increased, and the drying efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of drying, in particular to a full-automatic drying box device for coal sampling. Background Art

[0002] In the process of industrial silicon production, due to the characteristics of the production process of the submerged arc furnace, the raw silicon coal has high quality requirements and high detection frequency during the production process. Traditional silicon coal sampling is manually ground and dried before testing. In addition, the equipment is manually operated throughout the drying process. There are safety hazards in the manual operation of the oven, which greatly increases the labor cost. In addition, the airflow direction in the oven is fixed, which is prone to uneven drying, affecting the final quality of the coal-based samples. Summary of the invention

[0003] The object of the present invention is to provide a fully automatic drying box device for coal sampling and preparation, so as to solve the problems raised in the prior art.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a fully automatic drying box device for coal sampling and preparation, comprising an equipment shell, six door structures are installed on one side of the equipment shell, and a heating box and a pressure sensor are arranged on the side of the six door structures close to the equipment shell, an exhaust valve is fixedly installed on the heating box, a plurality of air guide pipes are rotatably installed inside the heating box, a plurality of air guide pipes are provided on the outer sides of the plurality of air guide pipes, a shunt box is arranged between the plurality of air guide pipes, a gear transmission structure is arranged inside the shunt box, a transmission frame is installed on the gear transmission structure, a junction box is fixedly connected to the top of the inner cavity of the heating box, a humidity sensor is fixedly connected to the junction box, a filter box is connected to the junction box, a water collecting box is fixedly connected to the bottom of the filter box, two water-absorbing sponges are arranged inside the filter box, a metal mesh is arranged on one side of one of the water-absorbing sponges, a mounting frame four and a mounting frame three are arranged between the metal mesh and the transmission frame, and a heating structure is arranged between the filter box and the shunt box.

[0005] Preferably, the door structure includes a mounting frame six, a lamp is fixedly installed inside the mounting frame six, the mounting frame six is ​​rotatably connected to a door shaft, a door panel is rotatably sleeved on the outer side of the door shaft, and a sealing strip is fixedly connected to one side of the door panel.

[0006] Preferably, a guide rail is fixedly connected to one side of the door panel close to the equipment housing, a sliding frame is slidably mounted on the guide rail, and a pneumatic cylinder is fixedly connected between one end of the sliding frame and the equipment housing.

[0007] Preferably, a side of the door panel close to the device housing is fitted with a pressure sensor, two dampers are fixedly installed between the pressure sensor and the device housing, and the pressure sensor is electrically connected to the PLC controller.

[0008] Preferably, a mounting frame five is fixedly connected to the inside of the equipment casing, one end of the six heating boxes are arranged inside the mounting frame five, a plurality of air inlet holes are opened at the bottom of the junction box, and the plurality of air inlet holes are arranged at the top of the inner cavity of the heating box, two support seats are fixedly connected to the bottom of the inner cavity of the heating box, and a reserved groove is opened at the top of the support seat.

[0009] Preferably, the heating structure includes a fan, a heater and an air duct three, one end of the junction box away from the door body structure extends to the outside of the heating box, and an air duct two is fixedly connected between the bottom of one end of the junction box and the filter box, and the filter box and the diversion box are both fixedly installed on the side of the heating box away from the door body structure. The air inlet end of the fan is fixedly connected to the side of the bottom of the filter box away from the air duct two, the air outlet end of the fan is fixedly connected to the air inlet end of the heater, and the air outlet end of the heater is fixedly connected to the diversion box.

[0010] Preferably, filter screen 2 and filter screen 1 are arranged between the air duct 2 and the air inlet end of the fan, and filter screen 2 and filter screen 1 are both fixedly installed inside the filter box, and two mounting frames 1 are arranged between filter screen 1 and filter screen 2, and the two mounting frames 1 are both fixedly connected to the filter box, and the two absorbent sponges are respectively fixedly connected to one side of the two mounting frames 1 close to the air duct 2.

[0011] Preferably, the mounting frame three is fixedly sleeved on the outside of the metal mesh, the metal mesh is arranged on the side of the water-absorbing sponge close to the air duct two, the mounting frame four is fixedly connected between the mounting frame three and the transmission frame, and the transmission frame part passes through the filter screen two and the filter box.

[0012] Preferably, the gear transmission structure includes a rack and multiple gears fixedly installed on the outside of the air duct, and the ends of the multiple air ducts away from the door structure all pass through the heating box and extend to the inside of the diversion box. The air duct is rotatably connected to the heating box and the diversion box. The gear is arranged inside the diversion box, and the rack is meshed with multiple gears. A fixed vertical plate is fixedly connected to one side of the top of the rack, and a pneumatic cylinder is fixedly installed between the fixed vertical plate and the top wall of the inner cavity of the diversion box, and a fixed vertical plate is fixedly connected between the other side of the top of the rack and the transmission frame.

[0013] The automatic drying box temperature control system includes a PLC controller fixedly installed on one side of the equipment housing, the PLC controller includes an operation panel, the operation panel is electrically connected to a PLC program storage module, the PLC program storage module is electrically connected to a processing simulation module, the processing simulation module is electrically connected to an instruction generation module, and the instruction generation module is electrically connected to a data feedback module and a time control module

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. When the present application is used, the air cylinder 2 is controlled to reciprocate and extend and contract, driving the rack to reciprocate and multiple gears to rotate reciprocatingly, so that the air guide tube 1 can reciprocate within a certain angle, and the high-temperature airflow discharged from the exhaust hole opened in the air guide tube 1 can reciprocate within a certain angle, thereby changing the discharge angle of the high-temperature airflow, increasing the contact area between the high-temperature airflow and the coal sample, and improving the drying effect.

[0016] 2. The present application sets filter screen 1, filter screen 2 and two water-absorbing sponges inside the filter box, so that the heating structure can utilize the hot air that enters the heating box to perform the drying effect, thereby reducing the airflow heating time. The transmission frame drives the installation frame 3 and the metal mesh to move through the installation frame 4. The metal mesh squeezes the water-absorbing sponge to squeeze out the water inside the water-absorbing sponge near the air guide pipe 2, thereby ensuring the efficiency of the water-absorbing sponge in intercepting water in the airflow.

[0017] 3. The instruction generation module in this application generates control instructions according to the working simulation steps to control the working mode of the heating structure, the working time of each working mode, and the temperature of the airflow heated by the heating structure; the instruction generation module generates control instructions according to the working simulation steps to control the working time and working interval of the gear transmission structure, thereby realizing automated drying of six coal samples and reducing labor costs. Only one person is needed to patrol and observe abnormal conditions. At the same time, it improves equipment utilization and reduces equipment depreciation and maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention;

[0019] Figure 2 For the present invention Figure 1 A magnified structural diagram of part A;

[0020] Figure 3 It is a schematic diagram of the structure of the sealing strip of the present invention;

[0021] Figure 4 For the present invention Figure 3 An enlarged view of the structure of the C part;

[0022] Figure 5 It is a schematic diagram of the partial structure of the guide rail of the present invention;

[0023] Figure 6 It is a structural schematic diagram of the mounting frame 5 of the present invention;

[0024] Figure 7 It is a structural schematic diagram of the combiner box of the present invention;

[0025] Figure 8 It is a partial structural schematic diagram of the filter box of the present invention;

[0026] Fig. 9 For the present invention Figure 8 An enlarged structural diagram of the D portion;

[0027] Fig.10 It is a partial structural schematic diagram of the diverter box of the present invention;

[0028] Fig.11 It is a structural schematic diagram of the housing of the device of the present invention;

[0029] Fig.12 For the present invention Figure 1 A magnified structural diagram of part B;

[0030] Fig.13 It is a schematic diagram of the temperature control system of the automatic drying box of the present invention.

[0031] Numbers in the figure: 1. Equipment housing; 2. PLC controller; 201. Operation panel; 202. PLC program storage module; 203. Processing simulation module; 204. Instruction generation module; 205. Data feedback module; 206. Time control module; 3. Lamp; 4. Door shaft; 5. Door panel; 6. Pneumatic cylinder 1; 7. Sliding rack; 8. Guide rail; 9. Damper; 10. Pressure sensor; 11. Sealing strip; 12. Heating box; 13. Support seat; 14. Reserved slot; 15. Air guide pipe 1; 16. Exhaust hole; 17. Junction box; 1 8. Air inlet; 19. Humidity sensor; 20. Air duct 2; 21. Filter box; 22. Filter screen 1; 23. Filter screen 2; 24. Mounting frame 1; 25. Water-absorbing sponge; 26. Mounting frame 3; 27. Metal mesh; 28. Mounting frame 4; 29. ​​Transmission frame; 30. Fan; 31. Heater; 32. Air duct 3; 33. Diverter box; 34. Rack; 35. Gear; 36. Pneumatic cylinder 2; 37. Fixed vertical plate 1; 38. Fixed vertical plate 2; 39. Mounting frame 5; 40. Mounting frame 6; 41. Exhaust valve; 42. Water collecting tank. DETAILED DESCRIPTION

[0032] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0033] Example: Figure 1-Figure 3 As shown, the present invention provides a technical solution of a fully automatic drying box device for coal sampling, which is as follows:

[0034] In the present application, a mounting frame 5 39 is fixedly installed inside the device housing 1 in the automatic drying box, and the mounting frame 5 39 divides the inside of the device housing 1 into six spaces, such as Figure 6As shown, most of the six heating boxes 12 are arranged in the six spaces separated by the mounting frame 5 39, so as to avoid the situation that the six heating boxes 12 interfere with each other and affect the temperature control when heating inside, thereby improving the accuracy of the internal temperature control of the heating boxes 12.

[0035] A door structure is installed on one side of each of the six heating boxes 12. In the door structure, a mounting frame 6 40 is fixedly installed on the equipment housing 1. A door shaft 4 is rotatably connected to the mounting frame 6 40. A door plate 5 is rotatably sleeved on the outer side of the door shaft 4. The door plate 5 can rotate on one side of the heating box 12 with the door shaft 4 as the axis to seal or open the heating box 12. A guide rail 8 is fixedly connected to the side of the door plate 5 close to the equipment housing 1. One end of a sliding frame 7 slidably installed on the guide rail 8 is fixedly connected to a piston end of a pneumatic cylinder 6 fixedly installed on the equipment housing 1. Figure 5 As shown, the pneumatic cylinder 6 is controlled to work and extend, and the pneumatic cylinder 6 pushes the guide rail 8 through the sliding frame 7. The guide rail 8 drives the fixed door panel 5 to rotate with the door shaft 4 as the axis, so that the door panel 5 rotates to a state close to the vertical state of the equipment housing 1, and the door panel 5 is in an open state at this time; when the pneumatic cylinder 6 contracts, the door panel 5 rotates to be parallel to the equipment housing 1, and the door panel 5 is in a closed state. At this time, the sealing strip 11 fixedly connected to one side of the door panel 5 is in contact with the heating box 12. The sealing strip 11 that can be elastically deformed improves the sealing between the door panel 5 and the heating box 12. At this time, the side of the door panel 5 close to the equipment housing 1 is in contact with the pressure sensor 10. Since two dampers 9 are fixedly installed between the pressure sensor 10 and the equipment housing 1, during the rotation opening and closing process of the door panel 5 The pressure sensor 10 supported by the retractable damper 9 can move to prevent the pressure sensor 10 from being damaged by the door panel 5. When the door panel 5 stays in a parallel state with the equipment housing 1, the pressure sensor 10 supported by the damper 9 contacts and fits with the door panel 5. The pressure sensor 10 detects a certain pressure value. At this time, the PLC controller 2 electrically connected to the pressure sensor 10 receives feedback, and the PLC controller 2 controls the lamp 3 fixedly installed inside the mounting frame 6 40 to work and light up. The lamp 3 lights up to indicate that the door panel 5 in the door structure is in the open state. When the lamp 3 is not lit, it indicates that the door panel 5 in the door structure is in the closed state. The setting of the lamp 3 is convenient for the staff to manually inspect whether the door structure is closed and whether the automatic drying box is faulty.

[0036] Two support seats 13 are fixedly connected to the bottom of the inner cavity of the heating box 12. The two support seats 13 are used to support the coal sample tray. A reserved groove 14 is opened on the top of the support seat 13. Figure 4 As shown, when the coal sample tray is placed inside the heating box 12, the reserved groove 14 reserves space for the movement of the robot arm gripper or the forklift fork.

[0037] A junction box 17 is fixedly connected to the top of the inner cavity of the heating box 12, and a plurality of air inlet holes 18 are opened at the bottom of the junction box 17. The plurality of air inlet holes 18 are all arranged at the top of the inner cavity of the heating box 12. The plurality of air inlet holes 18 fully cover the top of the inner cavity of the heating box 12, which is conducive to extracting air from various positions of the top of the coal sample tray and the top of the coal sample; because the end of the junction box 17 away from the door structure extends to the outside of the heating box 12, an air guide pipe 20 is fixedly connected between the bottom of one end of the junction box 17 and the filter box 21, and the heating structure The air inlet end of the fan 30 in the structure is fixedly connected to the side of the bottom of the filter box 21 away from the air guide pipe 20, so when the heating structure is working, the fan 30 draws air from various positions on the top of the coal sample through the filter box 21, the air guide pipe 20, the junction box 17 and the multiple air inlet holes 18 opened on the junction box 17; the air outlet end of the fan 30 is fixedly connected to the air inlet end of the heater 31, and the air guide pipe 32 is fixedly connected between the air outlet end of the heater 31 and the diverter box 33, and the airflow output by the fan 30 is heated by the heater 31 After that, a high-temperature airflow is formed, which enters the inside of the diversion box 33 through the air guide pipe 32, and a plurality of air guide pipes 15 are rotatably installed inside the heating box 12. The ends of the plurality of air guide pipes 15 away from the door structure all penetrate the heating box 12 and extend to the inside of the diversion box 33. Under the action of the diversion box 33, the high-temperature airflow enters the interior of the plurality of air guide pipes 15, and the high-temperature airflow is discharged into the bottom of the inner cavity of the heating box 12 through a plurality of exhaust holes 16 provided on the outside of the plurality of air guide pipes 15. At this time, the high-temperature airflow enters the bottom of the inner cavity of the heating box 12, and the airflow at the top of the inner cavity of the heating box 12 is extracted, so that the high-temperature airflow flows from the bottom to the top to dry the coal-based sample. An exhaust valve 41 is fixedly connected to the heating box 12, and the exhaust valve 41 can be controlled to open at a fixed time to allow external airflow to enter the heating box 12 to balance the internal air pressure of the heating box 12, thereby avoiding the situation in which the air pressure increases due to high-temperature expansion of the gas in the heating box 12 and gasification of the liquid as the heating structure works, thereby increasing the workload of the door structure, thereby ensuring the service life of the door structure.

[0038] The six heating boxes 12 are all equipped with independently working heating structures, door structures and exhaust valves 41, forming six regional drying boxes, which work independently without interfering with each other, and realize the drying requirements of coal samples with different processing requirements.

[0039] In addition, filter screen 23 and filter screen 1 22 are arranged between air guide pipe 20 and air inlet end of fan 30, and filter screen 23 and filter screen 1 22 are fixedly installed inside filter box 21, and filter screen 1 22 and filter screen 23 play the role of filtering impurities, so as to prevent impurities and debris from entering the heating structure during the drying process of coal sample, thereby ensuring the service life of the heating structure; two mounting frames 1 24 are arranged between filter screen 1 22 and filter screen 23, and both mounting frames 1 24 are fixedly connected to filter box 21, such as Figure 8As shown, two mounting frames 1 24 are fixedly mounted with absorbent sponges 25 on one side close to the air duct 20. The absorbent sponges 25 remove moisture from the airflow drawn from the inside of the heating box 12. By setting the filter screen 1 22, the filter screen 23 and the two absorbent sponges 25 inside the filter box 21, the heating structure utilizes the hot air after entering the heating box 12 to perform the drying effect, thereby reducing the heating time of the airflow.

[0040] The air guide tube 15 is rotatably connected to the heating box 12 and the diversion box 33. The gear 35 in the gear transmission structure corresponds to the multiple air guide tubes 15 one by one, and the gear 35 is fixedly installed on the outside of the air guide tube 15 and arranged inside the diversion box 33, and the rack 34 is meshed with the multiple gears 35. Fig.10 As shown, because a fixed vertical plate 37 is fixedly connected to one side of the top of the rack 34, and a pneumatic cylinder 36 is fixedly installed between the fixed vertical plate 37 and the top wall of the inner cavity of the diverter box 33, when the pneumatic cylinder 36 is extended, the pneumatic cylinder 36 drives the rack 34 to move through the metal mesh 27, the rack 34 drives the meshing gear 35 to rotate, and the gear 35 drives the air guide tube 15 to rotate, and the pneumatic cylinder 36 is controlled to extend and contract reciprocally, driving the rack 34 to reciprocate, and multiple gears 35 reciprocate, so that the air guide tube 15 can reciprocate within a certain angle, and the high-temperature airflow discharged from the exhaust hole 16 opened in the air guide tube 15 can reciprocate within a certain angle, thereby changing the discharge angle of the high-temperature airflow, increasing the contact area between the high-temperature airflow and the coal sample, and improving the drying effect.

[0041] A second fixed vertical plate 38 is fixedly connected between the other side of the top of the rack 34 and the transmission frame 29, so the rack 34 drives the transmission frame 29 to reciprocate through the second fixed vertical plate 38. Since the mounting frame 36 is fixedly sleeved on the outside of the metal mesh 27, the metal mesh 27 is arranged on the side of the water-absorbing sponge 25 close to the second air guide tube 20, the mounting frame 4 28 fixedly connected to the mounting frame 36 is fixedly connected to the transmission frame 29, as shown in FIG. Fig. 9 As shown, when the transmission frame 29 partially penetrating the filter screen 23 and the filter box 21 reciprocates, the transmission frame 29 drives the mounting frame 3 26 and the metal mesh 27 to move through the mounting frame 4 28, and the metal mesh 27 squeezes the water-absorbing sponge 25, squeezes out the water inside the water-absorbing sponge 25 near the air guide pipe 20, and a water collecting box 42 is fixedly connected at the bottom of the filter box 21, and the water collecting box 42 collects the squeezed water flow to ensure the efficiency of the water-absorbing sponge 25 in intercepting the water in the air flow;

[0042] The PLC controller 2 fixedly installed on one side of the equipment housing 1 stores a temperature control system inside and is used to control the door structure, heating structure, gear transmission structure and exhaust valve 41 installed on the six heating boxes 12 to work;

[0043] The staff sets the parameters for automatic drying of the coal sample inside each heating box 12 on the operation panel 201, and the parameters are composed of data such as the opening and closing time of the door structure, the working mode, working time and working temperature of the heating structure, the working time and working interval of the gear transmission structure, and the humidity value inside the heating box 12; the PLC program storage module 202 electrically connected to the operation panel 201 generates a PLC numerical control program after receiving the parameters, the processing simulation module 203 electrically connected to the PLC program storage module 202 generates a working simulation step according to the PLC numerical control program, and the instruction generation module 204 electrically connected to the processing simulation module 203 generates a corresponding control instruction at a preset time point according to the working simulation step, and controls the door panel 5 in the door structure It is turned on and off at preset time points. The heating structure has a heating mode in which the fan 30 and the heater 31 work synchronously, and a circulating air-drying mode in which the fan 30 works and the heater 31 stops working. The instruction generation module 204 generates control instructions according to the working simulation steps to control the working mode of the heating structure, the working time of each working mode, and the temperature at which the heating structure heats the airflow; the instruction generation module 204 generates control instructions according to the working simulation steps to control the working time and working interval of the gear transmission structure, so as to realize automatic drying of six coal samples and reduce labor costs. Only one person is needed to patrol and observe abnormal conditions. At the same time, equipment utilization is improved and equipment depreciation and maintenance costs are reduced.

[0044] The time control module 206 is used to monitor the working time of the heating structure, the door structure, the gear transmission structure, and the exhaust valve 41, and the monitoring results are fed back to the instruction generation module 204, so that the instruction generation module 204 generates corresponding control instructions at a preset time point to achieve automatic control.

[0045] The humidity sensor 19 fixedly installed on the junction box 17 is used to detect the humidity of the air flow inside the junction box 17, the heater 31 controls the air flow temperature, and the pressure sensor 10 is used to detect whether the door structure is closed. The detection results of the pressure sensor 10, the humidity sensor 19, and the heater 31 are fed back to the electrically connected data feedback module 205. When the instruction generation module 204 sends the door structure closing instruction, the pressure sensor 10 detection data does not change. At this time, the instruction generation module 204 controls the instruction to control the door shaft 4 to flash, reminding the inspection personnel of the door structure failure; in the last working time of the heating structure, the humidity inside the junction box 17 detected by the humidity sensor 19 is still not lower than the preset humidity value, and the PLC controller 2 marks the coal sample inside the heating box 12 corresponding to the humidity sensor 19 to facilitate subsequent repeated structures.

[0046] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A fully automatic drying box device for coal sampling, comprising a device housing (1), six door structures being installed on one side of the device housing (1), characterized in that: A heating box (12) and a pressure sensor (10) are provided on one side of the six door structures close to the device housing (1); an exhaust valve (41) is fixedly installed on the heating box (12); a plurality of air guide pipes (15) are rotatably installed inside the heating box (12); a plurality of exhaust holes (16) are provided on the outside of the plurality of air guide pipes (15); a shunt box (33) is provided between the plurality of air guide pipes (15); a gear transmission structure is provided inside the shunt box (33); a transmission frame (29) is installed on the gear transmission structure; the top of the inner cavity of the heating box (12) is fixedly connected to the gear transmission frame (29); A junction box (17) is connected, the junction box (17) is fixedly connected to a humidity sensor (19), the junction box (17) is connected to a filter box (21), the bottom of the filter box (21) is fixedly connected to a water collecting box (42), two water-absorbing sponges (25) are arranged inside the filter box (21), one side of one of the water-absorbing sponges (25) is provided with a metal mesh (27), a mounting frame four (28) and a mounting frame three (26) are arranged between the metal mesh (27) and the transmission frame (29), and a heating structure is arranged between the filter box (21) and the diversion box (33).

2. The fully automatic drying box device for coal sampling and preparation according to claim 1 is characterized in that: The door structure comprises a mounting frame six (40), a lamp (3) is fixedly mounted inside the mounting frame six (40), the mounting frame six (40) is rotatably connected to a door shaft (4), a door panel (5) is rotatably sleeved on the outer side of the door shaft (4), and a sealing strip (11) is fixedly connected to one side of the door panel (5).

3. The fully automatic drying box device for coal sampling and preparation according to claim 2 is characterized in that: A guide rail (8) is fixedly connected to one side of the door panel (5) close to the device housing (1); a sliding frame (7) is slidably mounted on the guide rail (8); and a pneumatic cylinder (6) is fixedly connected between one end of the sliding frame (7) and the device housing (1).

4. The fully automatic drying box device for coal sampling and preparation according to claim 2 is characterized in that: The side of the door panel (5) close to the device housing (1) is fitted with a pressure sensor (10), two dampers (9) are fixedly installed between the pressure sensor (10) and the device housing (1), and the pressure sensor (10) is electrically connected to the PLC controller (2).

5. The fully automatic drying box device for coal sampling and preparation according to claim 1 is characterized in that: A mounting frame five (39) is fixedly connected to the inside of the equipment housing (1), one end of each of the six heating boxes (12) is arranged inside the mounting frame five (39), a plurality of air inlet holes (18) are provided at the bottom of the junction box (17), and the plurality of air inlet holes (18) are arranged at the top of the inner cavity of the heating box (12), two support seats (13) are fixedly connected to the bottom of the inner cavity of the heating box (12), and a reserved groove (14) is provided at the top of the support seat (13).

6. The fully automatic drying box device for coal sampling and preparation according to claim 1 is characterized in that: The heating structure comprises a fan (30), a heater (31) and an air guide pipe (32); one end of the junction box (17) away from the door structure extends to the outside of the heating box (12); an air guide pipe (20) is fixedly connected between the bottom of one end of the junction box (17) and the filter box (21); the filter box (21) and the diversion box (33) are both fixedly installed on a side of the heating box (12) away from the door structure; an air inlet end of the fan (30) is fixedly connected to a side of the bottom of the filter box (21) away from the air guide pipe (20); an air outlet end of the fan (30) is fixedly connected to an air inlet end of the heater (31); and an air guide pipe (32) is fixedly connected between the air outlet end of the heater (31) and the diversion box (33).

7. A fully automatic drying box device for coal sampling and preparation according to claim 6, characterized in that: A second filter screen (23) and a first filter screen (22) are arranged between the second air guide pipe (20) and the air inlet end of the fan (30); the second filter screen (23) and the first filter screen (22) are both fixedly installed inside the filter box (21); two first mounting frames (24) are arranged between the first filter screen (22) and the second filter screen (23); the two first mounting frames (24) are both fixedly connected to the filter box (21); and the two water-absorbing sponges (25) are respectively fixedly connected to one side of the two first mounting frames (24) close to the second air guide pipe (20).

8. The fully automatic drying box device for coal sampling and preparation according to claim 6, characterized in that: The mounting frame three (26) is fixedly sleeved on the outside of the metal mesh (27), and the metal mesh (27) is arranged on a side of the water-absorbing sponge (25) close to the air guide pipe two (20). The mounting frame four (28) is fixedly connected between the mounting frame three (26) and the transmission frame (29), and the transmission frame (29) partially penetrates the filter screen two (23) and the filter box (21).

9. The fully automatic drying box device for coal sampling and preparation according to claim 6, characterized in that: The gear transmission structure comprises a rack (34) and a plurality of gears (35) fixedly installed on the outside of an air guide tube (15); the ends of the plurality of air guide tubes (15) away from the door structure all pass through the heating box (12) and extend into the diversion box (33); the air guide tube (15) is rotatably connected to the heating box (12) and the diversion box (33); the gear (35) is arranged inside the diversion box (33); the rack (34) is meshed with the plurality of gears (35); a fixed vertical plate (37) is fixedly connected to one side of the top of the rack (34); a pneumatic cylinder (36) is fixedly installed between the fixed vertical plate (37) and the top wall of the inner cavity of the diversion box (33); and a fixed vertical plate (38) is fixedly connected to the other side of the top of the rack (34) and the transmission frame (29).

10. An automatic drying box temperature control system, applicable to a fully automatic drying box device for coal sampling and preparation as claimed in any one of claims 1 to 9, comprising a PLC controller (2) fixedly mounted on one side of a device housing (1), the PLC controller (2) comprising an operation panel (201), characterized in that: The operation panel (201) is electrically connected to a PLC program storage module (202), the PLC program storage module (202) is electrically connected to a processing simulation module (203), the processing simulation module (203) is electrically connected to an instruction generation module (204), and the instruction generation module (204) is electrically connected to a data feedback module (205) and a time control module (206).

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