Spiral conveying vacuum drying machine

Abstract

The utility model discloses a spiral conveying vacuum drying machine which comprises a drying box, two conveying stirring rods are rotatably connected in the drying box, a material blocking plate is rotatably installed in the drying box and located between the two conveying stirring rods, and gaps are formed between the two sides of the material blocking plate and the inner wall of the drying box. And a driving motor is fixedly installed on the right side of the drying box, the right ends of the two conveying stirring rods penetrate through the drying box and are fixedly provided with transmission gears, and the two transmission gears are engaged with each other. According to the drying device, heating of the drying box and heating of the conveying stirring rod are combined, the heating comprehensiveness of materials can be improved, the drying uniformity of the materials can be improved, the drying uniformity can be further improved by circularly conveying the materials in the drying box, the blocking problem is avoided, the air pressure in the drying box is reduced by connecting the exhaust pipe with the suction device, and the drying efficiency is improved. The water evaporation temperature can be reduced, and the drying effect is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a vacuum drying machine technical field, concretely relates to a spiral conveying vacuum drying machine. BACKGROUND

[0002] In many industrial production processes, such as chemical industry, food processing, pharmaceutical industry, etc., efficient drying and rapid conveying of materials are needed, which requires a drying machine to dry and convey the raw materials.

[0003] Traditional drying conveyors have some shortcomings. For example, the heating area is limited, resulting in low drying efficiency and the need for a long drying time, which reduces production efficiency in large-scale production. Moreover, the conveying cycle speed is slow, which cannot meet the needs of rapid production processes, and some materials with high viscosity or high humidity are prone to blockage and uneven drying. UTILITY MODEL CONTENT

[0004] In view of the problems in the prior art, the utility model aims to provide a spiral conveying vacuum drying machine to solve the problems in the background art.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A spiral conveying vacuum drying machine, comprising a drying box, two conveying stirring rods are rotatably connected inside the drying box, a baffle plate is rotatably installed inside the drying box, the baffle plate is located between the two conveying stirring rods, the baffle plate has a gap on both sides with the inner wall of the drying box, a drive motor is fixedly installed on the right side of the drying box, the right ends of the two conveying stirring rods each penetrate the drying box and are fixedly installed with transmission gears, the two transmission gears are engaged with each other, the output shaft of the drive motor is fixedly connected with the transmission gear in front through a shaft coupling, the top of the drying box is provided with a feeding port, the bottom of the drying box is provided with a discharging port, the top of the drying box is fixedly installed with an exhaust pipe, the left side of the drying box is rotatably installed with a connecting pipe, the two connecting pipes each are provided with two openings, the inner sides of the two conveying stirring rods each are provided with a heating channel, the two ends of the heating channel are in communication with the two openings in the adjacent connecting pipes, the left side of the drying box is provided with a first steam inlet pipe and a first steam outlet pipe, the other ends of the two openings in the connecting pipes are respectively in communication with the first steam inlet pipe and the first steam outlet pipe.

[0007] Further description of the above technical scheme:

[0008] Two filter screen covers are fixedly installed inside the exhaust pipe, the two filter screen covers are respectively located on both sides of the baffle plate, and the top of the baffle plate is in contact with the bottoms of the two filter screen covers.

[0009] As a further description of the above technical solutions:

[0010] The inner bottom wall of the inner container is provided with two arc bottoms, the bottoms of the two conveying and stirring rods are in smooth contact with the two arc bottoms respectively, and the bottom of the material blocking plate is located between the two arc bottoms and is fixedly connected with the inner container.

[0011] As a further description of the above technical solutions:

[0012] The inner bottom wall of the inner container is provided with two arc bottoms, the bottoms of the two conveying and stirring rods are in smooth contact with the two arc bottoms respectively, and the bottom of the material blocking plate is located between the two arc bottoms and is fixedly connected with the inner container.

[0013] As a further description of the above technical solutions:

[0014] The top of the drying box is provided with a manhole, and a temperature table is fixedly installed on the top of the drying box, and the temperature probe of the temperature table is located in the interior of the drying box.

[0015] Compared with the prior art, the advantages of the present application are:

[0016] The present application combines the heating of the drying box and the heating of the conveying and stirring rod, which can improve the overall heating of the material, improve the drying uniformity of the material, and further improve the drying uniformity by circulating the material in the drying box, and avoid the problem of blockage. The exhaust pipe is connected to the suction device to reduce the air pressure in the drying box, which can reduce the evaporation temperature of the moisture and improve the drying effect. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a front view of the structure of the present application.

[0018] Figure 2 It is a right view of the structure of the present application.

[0019] Figure 3 It is a top view of the structure of the present application.

[0020] Figure 4 It is an enlarged structure diagram of part A of the present application. Figure 1

[0021] Explanation of figure numbers:

[0022] ​1. Drying box; 101. Inner tank; 102. Insulation layer; 103. Second steam inlet pipe; 104. Second steam outlet pipe; 2. Conveying stirring rod; 21. Heating channel; 3. Material baffle; 4. Drive motor; 5. Transmission gear; 6. Feed port; 7. Discharge port; 8. Exhaust pipe; 81. Filter screen; 9. Connecting pipe; 91. Through port; 10. First steam inlet pipe; 11. First steam outlet pipe; 12. Manhole; 13. Thermometer. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0024] See also Figures 1-4 In the utility model, a spiral conveying vacuum dryer includes a drying box 1. The interior of the drying box 1 is connected to two conveying stirring rods 2 for rotation. A material baffle 3 is installed in the interior of the drying box 1 for rotation. The material baffle 3 is located between the two conveying stirring rods 2. There is a gap between the two sides of the material baffle 3 and the inner wall of the drying box 1. A driving motor 4 is fixedly installed on the right side of the drying box 1. The right ends of the two conveying stirring rods 2 pass through the drying box 1 and are fixedly installed with a transmission gear 5. The two transmission gears 5 are meshed with each other. The output shaft of the driving motor 4 is fixedly connected to the transmission gear 5 on the front through a coupling. 1 is provided with a feed port 6 at the top, a discharge port 7 is provided at the bottom of the drying box 1, an exhaust pipe 8 is fixedly installed on the top of the drying box 1, a connecting pipe 9 is rotatably installed on the left side of the drying box 1, and the two connecting pipes 9 are provided with two through openings 91. A heating channel 21 is opened on the inner side of the two conveying and stirring rods 2, and the two ends of the heating channel 21 are connected to the two through openings 91 in the adjacent connecting pipe 9. A first steam inlet pipe 10 and a first steam outlet pipe 11 are provided on the left side of the drying box 1, and the other ends of the two through openings 91 in the connecting pipe 9 are respectively connected to the first steam inlet pipe 10 and the first steam outlet pipe 11.

[0025] The utility model discloses, through feeding inlet 6, the raw material of required drying is put in, then drive motor 4 is electrified work, drives two conveying stirring rod 2 rotation, wherein because the transmission of two transmission gear 5, so two conveying stirring rod 2's rotation direction is opposite, through first steam inlet pipe 10 input high temperature steam, via two connecting pipes 9 one of the passageways 91 input to heating channel 21, to conveying stirring rod 2 heating, utilize conveying stirring rod 2 transmission process to the heating drying of material, then steam passes through heating channel 21 another end conveying connecting pipe 9 another passageway 91 and leads into first steam outlet pipe 11, after the drying of material can be discharged through discharge gate 7, because two conveying stirring rod 2's rotation direction is opposite, so two conveying stirring rod 2 to the direction of material conveying is opposite, and is limited by the baffle plate 3, can let material in drying box 1 circulation dry, improve drying effect, and the circulation process can avoid that the material with greater viscosity is jammed drying box, guarantee conveying dry smooth.

[0026] Please refer to Figure 2 Wherein: the inside fixed mounting of exhaust pipe 8 has two filter screen covers 81, two filter screen covers 81 are located at the both sides of baffle plate 3 respectively, and the top of baffle plate 3 is in contact with the bottom of two filter screen covers 81.

[0027] In the utility model, through exhaust pipe 8, the gas generated in the drying process of material in drying box 1 can be conveniently discharged, and the material dust in the discharged gas is filtered through two filter screen covers 81, to avoid the floating of material after drying from being discharged by exhaust pipe 8.

[0028] Please refer to Figure 2 Wherein: the inside fixed mounting of drying box 1 has inner bag 101, the gap between drying box 1 and inner bag 101 is heat preservation layer 102, second steam inlet pipe 103 and second steam outlet pipe 104 are fixedly installed on drying box 1, and second steam inlet pipe 103 and second steam outlet pipe 104 are both connected with the inside of heat preservation layer 102.

[0029] In the utility model, the external steam source is connected through second steam inlet pipe 103 and second steam outlet pipe 104, high temperature steam is circulated and conveyed into heat preservation layer 102, then the heat is used to heat the material inside inner bag 101, to improve the heating efficiency of material and improve the drying speed of material.

[0030] Please refer to Figure 2 Wherein: the inner bottom wall of inner bag 101 is provided with two arc bottoms, the bottoms of two conveying stirring rods 2 are respectively in smooth contact with two arc bottoms, and the bottom of baffle plate 3 is located between two arc bottoms and is fixedly connected with inner bag 101.

[0031] The arc bottom of the inner container 101 can improve the adhesion with the conveying stirring rod 2, reduces the conveying stirring dead angle, thereby avoiding the problems of blockage and uneven drying.

[0032] Please refer to Figure 1 With Figure 3 Wherein: the top of the drying box 1 is provided with a manhole 12, the top of the drying box 1 is fixedly installed with a temperature table 13, and the temperature probe of the temperature table 13 is located in the inside of the drying box 1.

[0033] In the utility model, the manhole 12 is convenient to open the inside of the drying box 1 to enter the maintenance, wherein the temperature table 13 can display the heating temperature in the drying box 1 in real time, and is convenient to control.

[0034] The above is only the preferred specific implementation mode of the utility model; but the protection scope of the utility model is not limited to this. Any skilled person in the art in the technical range disclosed by the utility model, according to the technical scheme and the improvement concept of the utility model, is equivalent to replace or change, should be covered in the protection scope of the utility model.

Claims

1. A screw conveyor vacuum drier comprising a drying chamber (1), characterized in that: The inside of the drying box (1) is rotatably connected with two conveying stirring rods (2), the inside of the drying box (1) is rotatably installed with a material blocking plate (3), the material blocking plate (3) is located between the two conveying stirring rods (2), the two sides of the material blocking plate (3) have gaps with the inner wall of the drying box (1), the right side of the drying box (1) is fixedly installed with a driving motor (4), the right ends of the two conveying stirring rods (2) are both penetrated through the drying box (1) and are fixedly installed with transmission gears (5), the two transmission gears (5) are engaged with each other, the output shaft of the driving motor (4) is fixedly connected with the front transmission gear (5) through a shaft coupling, the top of the drying box (1) is provided with an inlet (6), the bottom of the drying box (1) is provided with an outlet (7), the top of the drying box (1) is fixedly installed with an exhaust pipe (8), the left side of the drying box (1) is rotatably installed with connecting pipes (9), the two connecting pipes (9) are both provided with two openings (91), the inner sides of the two conveying stirring rods (2) are both provided with heating channels (21), the two ends of the heating channels (21) are communicated with the two openings (91) in the adjacent connecting pipes (9), the left side of the drying box (1) is provided with a first steam inlet pipe (10) and a first steam outlet pipe (11), the other ends of the two openings (91) in the connecting pipes (9) are respectively communicated with the first steam inlet pipe (10) and the first steam outlet pipe (11).

2. A screw conveyor vacuum dryer according to claim 1, characterized in that: The inside of the exhaust pipe (8) is fixedly installed with two filter screen covers (81), the two filter screen covers (81) are respectively located at the two sides of the material blocking plate (3), and the top of the material blocking plate (3) is in contact with the bottoms of the two filter screen covers (81).

3. A screw conveyor vacuum dryer according to claim 1, characterized in that: The inside of the drying box (1) is fixedly installed with an inner container (101), the gap between the drying box (1) and the inner container (101) is a heat preservation layer (102), the drying box (1) is fixedly installed with a second steam inlet pipe (103) and a second steam outlet pipe (104), and the second steam inlet pipe (103) and the second steam outlet pipe (104) are both communicated with the inside of the heat preservation layer (102).

4. A screw conveyor vacuum dryer according to claim 3, characterized in that: The inner bottom wall of the inner container (101) is provided with two arc bottoms, the bottoms of the two conveying stirring rods (2) are respectively in smooth contact with the two arc bottoms, and the bottom of the material blocking plate (3) is located between the two arc bottoms and is fixedly connected with the inner container (101).

5. A screw conveyor vacuum dryer according to claim 1, characterized in that: The top of the drying box (1) is provided with a manhole (12), the top of the drying box (1) is fixedly installed with a temperature table (13), and the temperature probe of the temperature table (13) is located in the inside of the drying box (1).

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