High-efficiency microwave-assisted hot air circulation drying equipment for refractory material

Abstract

The invention relates to the technical field of drying equipment, and discloses refractory material efficient microwave-assisted hot air circulation drying equipment which comprises a microwave drying hole, a plurality of microwave generators are installed in the microwave drying hole, and a dehumidification branch pipe is installed on one side of the outer wall of the microwave drying hole; and one end of each moisture removal branch pipe is fixedly connected with a moisture removal fan, the lower surface of each moisture removal fan is installed on the upper surface of the corresponding microwave drying hole, the output end of each moisture removal fan is fixedly connected with a chimney, and the lower surface of each chimney is fixedly connected to the upper surface of the corresponding microwave drying hole. A plurality of microwave generators in the microwave drying hole are started to generate a microwave field, internal water molecules are polarized to generate violent collision and friction, so that a refractory material is heated by itself to realize drying, and then a moisture removal fan is started to extract moisture in the microwave drying hole through a moisture removal branch pipe and convey the moisture into a chimney, so that the drying effect is improved. Therefore, the generated moisture is discharged, and the effect of improving the drying efficiency is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of drying equipment, in particular to a high-efficiency microwave-assisted hot air circulation drying equipment for refractory materials. Background Art

[0002] In the production process of refractory materials, drying is an indispensable link, its purpose is to gradually remove the moisture in the bricks to prepare for the subsequent firing process. The traditional method of drying large and special semi-finished refractory materials is to use the residual heat from firing to dry them in a tunnel-type drying cave.

[0003] The drying temperature in the tunnel drying cave using waste heat is low and the heat distribution is uneven. Not only is the cycle long, but the scrap rate is also high, especially in winter, when the thermal energy utilization rate is low and the heat loss is large. The problems of semi-finished products such as water immersion, black core, deformation, brick bursting and cracks caused by insufficient waste heat source are becoming more and more serious. Additional heat source is required to supplement the waste heat, resulting in high energy consumption and greatly affecting production efficiency and product quality. If the large amount of moisture generated during the drying process cannot be discharged in time, the humidity in the drying environment will increase, which is not conducive to the further evaporation of moisture and may cause moisture regain in the bricks. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention provides a high-efficiency microwave-assisted hot air circulation drying equipment for refractory materials, which solves the problems of long drying cycle, high energy consumption, uneven drying and incomplete moisture discharge that reduces drying efficiency in refractory material drying methods.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a high-efficiency microwave-assisted hot air circulation drying equipment for refractory materials, comprising a microwave drying cave, wherein a plurality of microwave generators are installed inside the microwave drying cave, a dehumidification branch pipe is installed on one side of the outer wall of the microwave drying cave, one end of the dehumidification branch pipe is fixedly connected to a dehumidification fan, the lower surface of the dehumidification fan is installed on the upper surface of the microwave drying cave, the output end of the dehumidification fan is fixedly connected to a chimney, and the lower surface of the chimney is fixedly connected to the upper surface of the microwave drying cave.

[0006] Preferably, a hot air pipe is installed on the upper surface of the microwave drying hole, and one end of two hot air pipes is fixedly connected to a waste heat pipeline.

[0007] Preferably, regulating valves are installed on the two hot air pipes near the waste heat pipe.

[0008] Preferably, one end of the hot air pipe is fixedly connected to a hot air branch pipe, and the outer wall of the hot air branch pipe is installed inside the microwave drying hole.

[0009] Preferably, a front kiln door is installed on a side of the microwave drying hole close to the dehumidification fan, and a rear kiln door is installed on a side of the microwave drying hole close to the hot air pipe.

[0010] Preferably, electric trailers are installed on both sides of the microwave drying hole.

[0011] Preferably, a drying vehicle is provided on the upper surface of the electric trailer.

[0012] Preferably, semi-finished bricks are provided on the upper surface of the drying vehicle.

[0013] The present invention provides a high-efficiency microwave-assisted hot air circulation drying device for refractory materials. It has the following beneficial effects: 1. The present invention generates a microwave field by starting multiple microwave generators inside the microwave drying hole. The polarization of internal water molecules produces violent collisions and frictions, causing the refractory material to heat itself to achieve drying. Then, the moisture inside the microwave drying hole is extracted through the moisture removal branch pipe by starting the moisture removal fan and transported to the inside of the chimney, thereby discharging the generated moisture and achieving the effect of improving the drying efficiency.

[0014] 2. The present invention allows the waste heat generated in the microwave drying hole to enter the interior of the hot air pipe through the waste heat pipeline. The waste heat entering is controlled by the regulating valve, and the waste heat enters the interior of the hot air branch pipe through the hot air pipe, thereby allowing the waste heat to enter the interior of the microwave drying hole. The hot air generated by the waste heat is kept fluid by starting the dehumidification fan, thereby achieving the effect of conveniently discharging moisture. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A perspective view of the present invention; Figure 2 A cross-sectional view of a microwave drying hole of the present invention; Figure 3 It is a schematic diagram of the moisture removal branch pipe of the present invention; Figure 4 It is a schematic diagram of the hot air branch pipe of the present invention.

[0016] Among them, 1. Electric trailer; 2. Drying car; 3. Semi-finished bricks; 4. Front kiln door; 5. Dehumidification fan; 6. Chimney; 7. Microwave drying hole; 8. Hot air pipe; 9. Control valve; 10. Rear kiln door; 11. Microwave generator; 12. Hot air branch pipe; 13. Dehumidification branch pipe; 14. Waste heat pipe. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the specification 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.

[0018] Please see attached Figure 1 -Attached Figure 4 The embodiment of the present invention provides a high-efficiency microwave-assisted hot air circulation drying device for refractory materials, comprising a microwave drying cavity 7, a plurality of microwave generators 11 are installed inside the microwave drying cavity 7, a dehumidification branch pipe 13 is installed on one side of the outer wall of the microwave drying cavity 7, one end of the dehumidification branch pipe 13 is fixedly connected to a dehumidification fan 5, the lower surface of the dehumidification fan 5 is installed on the upper surface of the microwave drying cavity 7, the output end of the dehumidification fan 5 is fixedly connected to a chimney 6, and the lower surface of the chimney 6 is fixedly connected to the upper surface of the microwave drying cavity 7; Specifically, by starting up a plurality of microwave generators 11 inside the microwave drying cavity 7, a microwave field is generated, and the polarization of the internal water molecules produces violent collisions and frictions, causing the refractory material itself to heat up and thus achieve drying. Then, by starting up the dehumidification fan 5, the moisture inside the microwave drying cavity 7 is extracted through the dehumidification branch pipe 13 and transported to the inside of the chimney 6, thereby discharging the generated moisture, thereby achieving the effect of improving the drying efficiency.

[0019] A hot air pipe 8 is installed on the upper surface of the microwave drying hole 7, and one end of the two hot air pipes 8 is fixedly connected to a waste heat pipe 14; a regulating valve 9 is installed at a position of the two hot air pipes 8 near the waste heat pipe 14; one end of the hot air pipe 8 is fixedly connected to a hot air branch pipe 12, and the outer wall of the hot air branch pipe 12 is installed inside the microwave drying hole 7; Specifically, the waste heat generated in the microwave drying hole 7 enters the hot air pipe 8 through the waste heat pipe 14, and the waste heat entering is controlled by the regulating valve 9, and the waste heat enters the hot air branch pipe 12 through the hot air pipe 8, thereby allowing the waste heat to enter the microwave drying hole 7, and the hot air generated by the waste heat is kept fluid by starting the dehumidification fan 5 to facilitate the discharge of moisture.

[0020] A front kiln door 4 is installed on the side of the microwave drying hole 7 close to the dehumidification fan 5, and a rear kiln door 10 is installed on the side of the microwave drying hole 7 close to the hot air pipe 8; Specifically, the opening and closing of the microwave drying cavity 7 is controlled by starting the front kiln door 4 and the rear kiln door 10 , and the loss of internal heat is prevented by closing the front kiln door 4 and the rear kiln door 10 .

[0021] Electric trailers 1 are installed on both sides of the microwave drying hole 7; a drying car 2 is arranged on the upper surface of the electric trailer 1; and semi-finished bricks 3 are arranged on the upper surface of the drying car 2.

[0022] Specifically, the semi-finished bricks 3 are placed on the drying cart 2, and the electric trailer 1 is started to drive the drying cart 2 to move the semi-finished bricks 3, so that the drying cart 2 and the semi-finished bricks 3 are moved to the entrance of the microwave drying hole 7, and the front kiln door 4 is started to drive the semi-finished bricks 3 into the interior of the microwave drying hole 7, and then the drying process is carried out. After the drying is completed, the rear kiln door 10 is opened to allow the drying cart 2 to drive the semi-finished bricks 3 to move to the electric trailer 1.

[0023] Working principle: First, the semi-finished bricks 3 are placed on the drying vehicle 2, and then the drying vehicle 2 is moved to the entrance of the microwave drying hole 7 by starting the electric trailer 1. Then, the drying vehicle 2 drives the semi-finished bricks 3 into the interior of the microwave drying hole 7 by starting the front kiln door 4. After the entrance is sealed by closing the front kiln door 4, the microwave generator 11 is started to generate a microwave field, and the polarization of the internal water molecules produces violent collision and friction, so that the semi-finished bricks 3 are heated by themselves to achieve drying. After the water in the semi-finished bricks 3 is discharged, the internal moisture is discharged through the dehumidification branch pipe 13 by starting 15. The moisture is extracted and transported to the chimney 6, thereby discharging the moisture. The waste heat of the microwave drying hole 7 enters the interior of the hot air pipe 8 through the waste heat pipe 14, and the amount of waste heat entering is adjusted and controlled by the regulating valve 9. The waste heat enters the hot air branch pipe 12 through the hot air pipe 8, and then enters the microwave drying hole 7 to form hot air. The hot air is made to flow in the microwave drying hole 7 by starting the dehumidification fan 5, thereby achieving the effect of conveniently discharging moisture. After the drying is completed, the outlet of the microwave drying hole 7 is opened by starting the rear kiln door 10, so that the drying cart 2 drives the semi-finished bricks 3 to move to the drying cart 2.

[0024] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency microwave-assisted hot air circulation drying device for refractory materials, comprising a microwave drying hole (7), characterized in that: A plurality of microwave generators (11) are installed inside the microwave drying hole (7); a dehumidification branch pipe (13) is installed on one side of the outer wall of the microwave drying hole (7); one end of the dehumidification branch pipe (13) is fixedly connected to a dehumidification fan (5); the lower surface of the dehumidification fan (5) is installed on the upper surface of the microwave drying hole (7); the output end of the dehumidification fan (5) is fixedly connected to a chimney (6); and the lower surface of the chimney (6) is fixedly connected to the upper surface of the microwave drying hole (7).

2. A refractory material high-efficiency microwave-assisted hot air circulation drying equipment according to claim 1, characterized in that: A hot air pipe (8) is installed on the upper surface of the microwave drying hole (7), and one end of each of the two hot air pipes (8) is fixedly connected to a waste heat pipe (14).

3. A refractory material high-efficiency microwave-assisted hot air circulation drying equipment according to claim 2, characterized in that: The two hot air pipes (8) are both equipped with regulating valves (9) at positions close to the waste heat pipe (14).

4. The high-efficiency microwave-assisted hot air circulation drying equipment for refractory materials according to claim 2, characterized in that: One end of the hot air pipe (8) is fixedly connected to a hot air branch pipe (12), and the outer wall of the hot air branch pipe (12) is installed inside the microwave drying hole (7).

5. The high-efficiency microwave-assisted hot air circulation drying equipment for refractory materials according to claim 1, characterized in that: A front kiln door (4) is installed on a side of the microwave drying hole (7) close to the dehumidification fan (5), and a rear kiln door (10) is installed on a side of the microwave drying hole (7) close to the hot air pipe (8).

6. The high-efficiency microwave-assisted hot air circulation drying equipment for refractory materials according to claim 1, characterized in that: Electric trailers (1) are installed on both sides of the microwave drying hole (7).

7. The high-efficiency microwave-assisted hot air circulation drying equipment for refractory materials according to claim 6, characterized in that: A drying vehicle (2) is provided on the upper surface of the electric trailer (1).

8. The high-efficiency microwave-assisted hot air circulation drying equipment for refractory materials according to claim 7, characterized in that: Semi-finished bricks (3) are arranged on the upper surface of the drying vehicle (2).

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