Vacuum drying stock bin

Abstract

The utility model discloses a vacuum drying stock bin, which relates to the technical field of material drying equipment and comprises a rack, a heating bin is fixedly arranged in the rack, an end cover is fixedly arranged at the top end of the heating bin, and a feeding port and a vacuum port are arranged at one end of the upper surface of the end cover in a penetrating manner. A nitrogen inlet is formed in the bottom end of the heating bin in a penetrating mode, an electromagnetic valve is arranged at one end of the nitrogen inlet, and the nitrogen inlet is of an inclined structure. The vertical heating bin is arranged, the nitrogen inlet is formed in the bottom end of the heating bin, nitrogen can be introduced into the nitrogen inlet to reduce the humidity in the bin, the heating bin can directly heat materials, and redundant evaporated water vapor is pumped out through the vacuum pump connected with the vacuum port; and the problems of low material filling rate and low heating and drying efficiency of equipment are solved while the material drying efficiency is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of material drying equipment, in particular to a vacuum drying silo. Background Art

[0002] Vacuum drying is to heat and dry the dried material under vacuum conditions. It uses a vacuum pump to evacuate air and moisture, making the studio in a vacuum state, which greatly speeds up the drying rate of the material and also saves energy. Vacuum drying equipment is divided into static dryers and dynamic dryers. YZG cylindrical and FZG square vacuum dryers are static vacuum dryers, and SZG double cone rotary vacuum dryer is a dynamic dryer.

[0003] For example, a vacuum dryer with publication number CN201926257U includes a tank body, which is mounted on a support, and the side wall of the tank body is provided with a hollow interlayer, which is respectively provided with a steam inlet and a condensed water outlet, and a safety valve is provided on the tank body; the hollow interlayer is provided with an exhaust port and a steam sterilization port. The utility model solves the problem of low material drying efficiency, has a simple structural design, is easy to manufacture, and is suitable for large-scale drying production.

[0004] The above technical solution adopts a horizontal pressure vessel and steam jacket heating, which will cause difficulties in feeding and discharging materials, low heating efficiency, low pressure vessel material filling rate and other problems. Therefore, it is necessary to invent a vacuum drying silo to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a vacuum drying silo to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a vacuum drying silo, comprising a frame, a heating bin is fixedly arranged inside the frame, an end cover is fixedly arranged on the top of the heating bin, a feed port and a vacuum port are penetrated at one end of the upper surface of the end cover, a nitrogen inlet is penetrated at the bottom of the heating bin, and a solenoid valve is arranged at one end of the nitrogen inlet, the nitrogen inlet is arranged as an inclined structure, and one end of the nitrogen inlet is arranged inside the heating bin, a fixed cover is fixedly arranged on the top of the nitrogen inlet, and the fixed cover is arranged inside the heating bin, a plurality of air inlet holes are penetrated on the lower surface of the fixed cover, a plurality of air guide grooves of annular structure are opened on the inner side wall of the heating bin, and connecting grooves are arranged between the plurality of air guide grooves, a plurality of connecting grooves are arranged, and a plurality of connecting grooves are surrounded and arranged inside the heating bin, and a plurality of connecting air nozzles are penetrated on the outer side wall of the air guide groove.

[0007] Preferably, a cooling pipe with an annular structure is fixedly provided at the inner bottom end of the frame, and a plurality of fixed air nozzles are penetrated through the outer side wall of the cooling pipe.

[0008] Preferably, an air guide pipe is provided between the plurality of fixed air nozzles and the plurality of connecting air nozzles, and an air inlet pipe is fixedly provided at the bottom end of the outer wall of the cooling pipe.

[0009] Preferably, a stirring motor is fixedly provided on the top end of the end cover, and a reducer is fixedly provided on the output shaft of the stirring motor.

[0010] Preferably, a stirring rod is movably provided at the middle part of the lower surface of the end cover via a bearing, and the top end of the stirring rod is fixedly provided at the output end of the reducer.

[0011] Preferably, a plurality of heating plates are fixedly provided on the inner side wall of the heating chamber.

[0012] Technical effects and advantages of the utility model:

[0013] 1. The utility model sets a vertical heating bin, and a nitrogen inlet is set at the bottom of the heating bin. The nitrogen inlet can be introduced into the nitrogen to reduce the humidity in the bin, and the heating bin can directly heat the material, and the excess evaporated water vapor is extracted by a vacuum pump connected to the vacuum port, which ensures the material drying efficiency and solves the problems of low material filling rate and low heating and drying efficiency of the equipment;

[0014] 2. The utility model arranges a plurality of air guide grooves on the inner wall of the heating bin, and connecting grooves are arranged between the plurality of air guide grooves. When the material is dried, cold air can be input into the air guide grooves and the connecting grooves, and the temperature of the material can be controlled through the heat exchange between the cold air and the heating bin, thereby ensuring the drying effect of the material. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0016] Figure 2 This is a schematic diagram of the heating chamber structure of the present utility model.

[0017] Figure 3 It is a schematic cross-sectional view of the heating chamber structure of the present utility model.

[0018] In the figure: 1. frame; 2. heating chamber; 3. end cover; 4. feed port; 5. vacuum port; 6. nitrogen inlet; 7. fixed cover; 8. air inlet hole; 9. air guide groove; 10. connecting groove; 11. connecting air nozzle; 12. cooling pipe; 13. fixed air nozzle; 14. air inlet pipe; 15. stirring motor; 16. stirring rod. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] The utility model provides Figure 1-3 A vacuum drying silo shown in the figure comprises a frame 1, a heating silo 2 is fixedly arranged inside the frame 1, an end cover 3 is fixedly arranged on the top of the heating silo 2, a feed port 4 and a vacuum port 5 are penetrated at one end of the upper surface of the end cover 3, the feed port 4 can be inserted into the hopper of the material through the feed pipe, the vacuum port 5 can be connected to a vacuum pump, and the vacuum pump creates a vacuum environment inside the heating silo 2 through the vacuum port 5. In this process, the material is sucked into the heating silo 2 under the action of the vacuum environment;

[0021] Specifically, a nitrogen inlet 6 is provided through the bottom end of the heating bin 2, and a solenoid valve is provided at one end of the nitrogen inlet 6. The nitrogen inlet 6 is provided in an inclined structure, and one end of the nitrogen inlet 6 is provided inside the heating bin 2. A fixed cover 7 is fixedly provided at the top end of the nitrogen inlet 6, and the fixed cover 7 is provided inside the heating bin 2. A plurality of air inlet holes 8 are provided through the lower surface of the fixed cover 7, and the air inlet holes 8 are provided at the bottom end of the fixed cover 7, and the position design thereof can reduce the influence of the material on the air inlet holes 8.

[0022] More specifically, the inner wall of the heating bin 2 is provided with a plurality of air guide grooves 9 of an annular structure, and connecting grooves 10 are provided between the plurality of air guide grooves 9, and a plurality of connecting grooves 10 are provided, and the plurality of connecting grooves 10 are arranged around the interior of the heating bin 2, and a plurality of connecting air nozzles 11 are arranged through the outer wall of the air guide groove 9, and a plurality of cooling pipes 12 of an annular structure are fixedly provided at the inner bottom end of the frame 1, and a plurality of fixed air nozzles 13 are arranged through the outer wall of the cooling pipe 12, and an air guide pipe is arranged between the plurality of fixed air nozzles 13 and the plurality of connecting air nozzles 11, and an air inlet pipe 14 is fixedly provided at the bottom end of the outer wall of the cooling pipe 12, and the air inlet pipe 14 can be connected to an air pump to realize the input of external cold air, and the cold air enters the connecting groove 10 through the air guide groove 9, and is discharged through the connecting air nozzle 11 at the top of the air guide groove 9, so that the circulation of air can be realized, and the air exchanges heat with the heating bin 2 during the circulation process to realize the control of the material temperature;

[0023] Moreover, a stirring motor 15 is fixedly provided on the top of the end cover 3, and a reducer is fixedly provided on the output shaft of the stirring motor 15. A stirring rod 16 is movably provided on the middle part of the lower surface of the end cover 3 through a bearing, and the top end of the stirring rod 16 is fixedly provided on the output end of the reducer. A plurality of heating plates are fixedly provided on the inner wall of the heating bin 2, and the heating plates are configured as electric heating plates, which can realize direct heating of the material.

[0024] Working principle of this utility model:

[0025] When the device is in use, the feed port 4 at the top of the heating bin 2 can be inserted into the material hopper through the feed pipe, and the vacuum port 5 can be connected to the vacuum pump. The vacuum pump creates a vacuum environment inside the heating bin 2 through the vacuum port 5. During this process, the material is sucked into the heating bin 2 under the action of the vacuum environment. During this process, nitrogen is transported to the heating bin 2 through the nitrogen inlet 6 to reduce the humidity in the bin. In addition, the electric heating plate inside the heating bin 2 is powered on to generate heat, and the material is directly heated. The water vapor emitted by the material during the heating process It is drawn out under the action of the vacuum pump, so that the material can be dried. During the drying process of the material, the air inlet pipe 14 is connected to the air pump, so that the external cold air enters the cooling pipe 12 through the air inlet pipe 14, and then enters the air guide groove 9 through the fixed air nozzle 13 and the connecting air nozzle 11 at the bottom of the air guide groove 9. The cold air enters the connecting groove 10 through the air guide groove 9, and is discharged through the connecting air nozzle 11 at the top of the air guide groove 9. At this point, air circulation can be realized. During the circulation process, the air exchanges heat with the heating bin 2 to achieve control of the material temperature.

[0026] Finally, it should be noted that the above is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A vacuum drying silo, comprising a frame (1), characterized in that: A heating chamber (2) is fixedly arranged inside the frame (1), an end cover (3) is fixedly arranged at the top of the heating chamber (2), a feed port (4) and a vacuum port (5) are penetrated through one end of the upper surface of the end cover (3), a nitrogen inlet (6) is penetrated through the bottom end of the heating chamber (2), and a solenoid valve is arranged at one end of the nitrogen inlet (6), the nitrogen inlet (6) is arranged in an inclined structure, and one end of the nitrogen inlet (6) is arranged inside the heating chamber (2), and the top of the nitrogen inlet (6) is fixedly arranged. A fixed cover (7) is provided, and the fixed cover (7) is arranged inside the heating chamber (2), a plurality of air inlet holes (8) are provided through the lower surface of the fixed cover (7), a plurality of air guide grooves (9) of annular structure are opened on the inner wall of the heating chamber (2), and connecting grooves (10) are provided between the plurality of air guide grooves (9), a plurality of connecting grooves (10) are provided, and the plurality of connecting grooves (10) are arranged around the interior of the heating chamber (2), and a plurality of connecting air nozzles (11) are provided through the outer wall of the air guide groove (9).

2. A vacuum drying silo according to claim 1, characterized in that: A cooling pipe (12) with an annular structure is fixedly arranged at the inner bottom end of the frame (1), and a plurality of fixed air nozzles (13) are penetrated through the outer wall of the cooling pipe (12).

3. A vacuum drying silo according to claim 2, characterized in that: An air guide pipe is arranged between the plurality of fixed air nozzles (13) and the plurality of connecting air nozzles (11), and an air intake pipe (14) is fixedly arranged at the bottom end of the outer wall of the cooling pipe (12).

4. A vacuum drying silo according to claim 3, characterized in that: A stirring motor (15) is fixedly arranged on the top end of the end cover (3), and a speed reducer is fixedly arranged on the output shaft of the stirring motor (15).

5. A vacuum drying silo according to claim 4, characterized in that: A stirring rod (16) is movably arranged at the middle of the lower surface of the end cover (3) via a bearing, and the top end of the stirring rod (16) is fixedly arranged at the output end of the reducer.

6. A vacuum drying silo according to claim 5, characterized in that: A plurality of heating plates are fixedly arranged on the inner side wall of the heating chamber (2).

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