Vacuum roller electric heating dryer

Abstract

The utility model discloses a vacuum roller electric heating dryer which comprises a base, a motor and a bearing seat are fixed on the base, an output shaft of the motor is connected with a speed reducer fixed on the base, an output shaft of the speed reducer is connected with one end of a transmission shaft, the transmission shaft is movably connected with and penetrates through a hollow roller drying bin, and the other end of the transmission shaft is fixed on the bearing seat. A heat conduction pipe connected with an external power source and used for heating materials is arranged in the hollow roller drying bin, and a resistance wire for double heating of the materials is arranged in a transmission shaft movably connected with the hollow roller drying bin. The inner side of the hollow roller drying bin is provided with a plurality of limiting plates playing a role in rolling the materials, and the outer side of the transmission shaft is provided with a plurality of tooth pieces for conducting double rolling on the materials. The drying device can solve the problem of insufficient drying of materials and improve the drying efficiency.

Description

Technical Field

[0001] The utility model belongs to the technical field of drying machines, and in particular relates to a vacuum drum electric heating drying machine. Background Art

[0002] In the processing fields of grain, food, chemical industry, agricultural and sideline products, materials need to be dried under vacuum conditions. The most common dryers are heat pipe type and mesh belt type, which use heat exchangers for heat exchange. However, their heat exchangers are often large in size, small in heat exchange area, low in thermal energy utilization efficiency, and cannot utilize waste heat. The existing drum dryers on the market will result in insufficient drying of materials in the drum, and some materials will not be dried, resulting in low drying efficiency. Utility Model Content

[0003] The purpose of the utility model is to provide a vacuum drum electric heating dryer, which can solve the problem of insufficient material drying and improve the drying efficiency.

[0004] To achieve the above-mentioned purpose, the utility model provides a vacuum drum electric drying machine, comprising a base, on which a motor and a bearing seat are fixed, the output shaft of the motor is connected to a reducer fixed to the base, the output shaft of the reducer is connected to one end of a transmission shaft, the transmission shaft is movably connected and passes through a hollow drum drying bin, and the other end is fixed on the bearing seat; a heat conduction pipe connected to an external power supply for heating the material is arranged inside the hollow drum drying bin, and a resistance wire for doubly heating the material is arranged inside the transmission shaft movably connected to the hollow drum drying bin; a plurality of limit plates for tumbling the material are arranged on the inner side of the hollow drum drying bin, and a plurality of teeth for doubly tumbling the material are installed on the outer side of the transmission shaft.

[0005] Furthermore, the hollow drum drying chamber is provided with a heat insulating layer, a heat conducting layer and a material layer in sequence from the outside to the inside, and a heat conducting pipe connected to an external power supply is provided between the heat insulating layer and the heat conducting layer.

[0006] Furthermore, the base is also provided with a vacuum pump connected to an external power source and a filter connected to the vacuum pump for filtering dust or small particles entering the vacuum pump, and the filter is connected to an air pipe arranged on the hollow drum drying bin.

[0007] Furthermore, the limiting plate is arc-shaped and evenly distributed in a ring shape on the inner side of the hollow drum drying bin, and the limiting plate is fixed to the hollow drum drying bin by welding.

[0008] Furthermore, the outer side of the transmission shaft is evenly distributed with teeth in a ring shape, and a keyway is provided at the position connected to the hollow drum drying bin.

[0009] Furthermore, the reducer is connected to the motor and the transmission shaft via a first coupling and a second coupling respectively.

[0010] Compared with the prior art, the utility model has the following beneficial effects:

[0011] The utility model drives the hollow drum drying bin to dry materials through the transmission shaft, which can improve the stability of the mechanism. During the rotation process, the heat conduction pipe arranged inside the hollow drum drying bin and the resistance wire arranged inside the transmission shaft can double heat the materials, which is convenient for faster drying of the materials. In addition, a plurality of limit plates arranged on the inner side of the hollow drum drying bin and a plurality of tooth pieces installed on the outer side of the transmission shaft can double-tumble the materials, which can solve the problem of insufficient material drying and improve the drying efficiency.

[0012] Furthermore, the transmission shaft of the utility model is connected to the hollow drum by a key, and when any part fails, it can be replaced promptly and conveniently, which is convenient for maintenance.

[0013] Furthermore, the utility model provides a vacuum pump to extract the gas in the hollow drum drying chamber, so that the hollow drum drying chamber maintains a vacuum state, and the filter can filter dust or small particles entering the vacuum pump to prevent impurities from entering the vacuum pump and causing the vacuum pump to be blocked and stop working. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the cross-sectional structure of the vacuum roller of the utility model;

[0016] Figure 3 It is a structural schematic diagram of the transmission shaft of the utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the vacuum roller of the utility model;

[0018] In the figure: 1-motor; 2-first coupling; 3-reducer; 4-second coupling; 5-drive shaft; 6-hollow drum drying chamber; 7-bearing seat; 8-air pipe; 9-filter; 10-vacuum pump; 11-base; 12-tooth plate; 13-limiting plate; 14-heat pipe; 15-keyway; 16-resistance wire; 17-insulation layer; 18-heat conductive layer; 19-material layer. DETAILED DESCRIPTION

[0019] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] like Figure 1As shown, a vacuum drum electric drying machine described in this embodiment includes a base 11, on which a motor 1 and a bearing seat 7 are fixed. The motor 1 adopts a rotary motor, which has a high conversion efficiency and can effectively convert electrical energy into mechanical energy to reduce energy waste; the output shaft of the motor 1 is connected to the input shaft of the reducer 3 fixed on the base 11 through a first coupling 2, and the reducer 3 selects a gear reducer with a large transmission ratio. The output shaft of the reducer 3 is connected to one end of the transmission shaft 5 through a second coupling 4. The transmission shaft 5 is movably connected and passes through the hollow drum drying chamber 6, and the other end is fixed on the bearing seat 7. A vacuum pump 10 connected to an external power supply and a filter 9 connected to the vacuum pump 10 are also provided on the base 11. The filter 9 is connected to an air pipe 8 provided on the hollow drum drying bin 6. The gas in the hollow drum drying bin 6 can be extracted through the vacuum pump 10 to keep the hollow drum drying bin 6 in a vacuum state and slow down the discharge of heat; and the filter 9 can filter dust or small particles entering the vacuum pump 10 to prevent impurities from entering the vacuum pump 10 and causing the vacuum pump 10 to be blocked and stop working.

[0021] like Figure 2 As shown, the hollow drum drying chamber 6 is provided with a heat insulating layer 17, a heat conducting layer 18 and a material layer 19 from the outside to the inside in sequence, and a heat conducting pipe 14 connected to an external power source is provided between the heat insulating layer 17 and the heat conducting layer 18. The heat conducting pipe 14 transfers heat to the material layer 19 through the heat conducting layer 18 to heat and dry the material in the material layer 19. Figure 3 , 4 As shown, the transmission shaft 5 includes a keyway 15, a plurality of tooth pieces 12 evenly distributed in a ring shape on the outside of the transmission shaft 5, and a resistance wire 16 arranged inside the transmission shaft 5. The transmission shaft 5 is connected to the hollow drum drying bin 6 through the keyway 15. The transmission shaft 5 drives the hollow drum drying bin 6 to rotate. The tooth pieces 12 can roll the material when the hollow drum drying bin 6 is working. In addition, the heat pipe 14 arranged in the hollow drum drying bin 6 and the resistance wire 16 arranged in the transmission shaft 5 perform double heating on the material in the hollow drum drying bin 6, thereby improving the drying efficiency of the material and allowing the material to be further fully dried.

[0022] A plurality of arc-shaped limit plates 13 are welded and fixed to the inner side of the hollow drum drying bin 6, and are evenly distributed in a ring shape on the inner side of the hollow drum drying bin 6. The limit plates 13 can roll the material when the hollow drum drying bin 6 is working, so that the material can be fully dried.

[0023] Working principle: When using a vacuum drum electric drying machine, the motor 1 drives the reducer 3 to rotate through the input shaft of the reducer 3, thereby driving the transmission shaft 5 connected to the output shaft of the reducer 3 to rotate, and then driving the hollow drum drying bin 6 to rotate through the transmission shaft 5. During the operation of the hollow drum drying bin 6, the vacuum pump 10 draws humid air from the hollow drum drying bin 6 through the air pipe 8, and filters out small impurity particles in the air through the filter 9. Then, the heat conduction pipe 14 in the hollow drum drying bin 6 and the resistance wire 16 in the transmission shaft 5 perform double heating on the material in the material layer 9, and the limit plate 13 and the tooth plate 12 arranged on the transmission shaft 5 perform double tumbling on the material, thereby improving the drying efficiency of the material and making the material drying more sufficient.

Claims

1. A vacuum drum electric drying machine, characterized in that: The invention comprises a base (11), a motor (1) and a bearing seat (7) are fixed on the base (11), the output shaft of the motor (1) is connected to a reducer (3) fixed on the base (11), the output shaft of the reducer (3) is connected to one end of a transmission shaft (5), the transmission shaft (5) is movably connected and passes through a hollow drum drying chamber (6), and the other end is fixed on the bearing seat (7); A heat conducting pipe (14) connected to an external power source for heating the material is disposed inside the hollow drum drying bin (6), and a resistance wire (16) for doubly heating the material is disposed inside the transmission shaft (5) movably connected to the hollow drum drying bin (6); A plurality of limit plates (13) for causing the material to tumble are arranged on the inner side of the hollow drum drying bin (6), and a plurality of tooth plates (12) for causing the material to tumble double are installed on the outer side of the transmission shaft (5).

2. A vacuum drum electric drying machine according to claim 1, characterized in that: The hollow drum drying chamber (6) is provided with a heat insulating layer (17), a heat conducting layer (18) and a material layer (19) in sequence from the outside to the inside, and a heat conducting pipe (14) connected to an external power source is provided between the heat insulating layer (17) and the heat conducting layer (18).

3. The vacuum drum electric drying machine according to claim 1, characterized in that: The base (11) is also provided with a vacuum pump (10) connected to an external power source and a filter (9) connected to the vacuum pump (10) for filtering dust or small particles entering the vacuum pump (10); the filter (9) is connected to an air delivery pipe (8) provided on the hollow drum drying chamber (6).

4. The vacuum drum electric drying machine according to claim 1, characterized in that: The limiting plate (13) is arc-shaped and evenly distributed in a ring shape on the inner side of the hollow drum drying bin (6). The limiting plate (13) is fixed to the hollow drum drying bin (6) by welding.

5. The vacuum drum electric drying machine according to claim 1, characterized in that: The outer side of the transmission shaft (5) is evenly distributed with teeth (12) in a ring shape, and a keyway (15) is provided at the position connected with the hollow drum drying bin (6).

6. The vacuum drum electric drying machine according to claim 1, characterized in that: The reducer (3) is connected to the motor (1) and the transmission shaft (5) respectively via a first coupling (2) and a second coupling (4).

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