CN112717446A

CN112717446A - Closed cycle spray dryer

Info

Publication number: CN112717446A
Application number: CN201910971863.6A
Authority: CN
Inventors: 钱东明
Original assignee: Wuxi Lisheng Powder Technology Co ltd
Current assignee: Wuxi Lisheng Powder Technology Co ltd
Priority date: 2019-10-14
Filing date: 2019-10-14
Publication date: 2021-04-30

Abstract

The invention discloses a closed-loop circulating spray dryer which comprises a drying box, wherein the drying box is of a hollow cylindrical structure, a first mounting plate is fixed on the side surface of the drying box, a cyclone separator is fixed on the top of the first mounting plate, a connecting pipe is installed on the side surface of the cyclone separator and inserted into the drying box, and a first shell is installed on the top of the cyclone separator. The drying device has the advantages that the raw materials are dried by the aid of the jet disk, the heating wires and the second fan, the raw materials are atomized by the jet disk and are fully contacted with hot air, drying effect is good, gas-solid and gas-liquid separation is carried out on the heated air in the drying device by the aid of the cyclone separator and the first fan, clean air is fed into the drying box again, waste of heat energy is avoided, drying effect is further improved, pressure balance in the drying device is kept by the aid of the second shell, the sliding block and the spring, and safety is improved.

Description

Closed cycle spray dryer

Technical Field

The invention relates to the technical field of spray dryers, in particular to a closed-cycle spray dryer.

Background

The spray dryer is one of continuous normal pressure dryers. The liquid material is atomized by special equipment and is dried by contacting with hot air. For drying liquids, suspensions and viscous liquids which are somewhat heat sensitive, but also for drying fuels, intermediates, soap powders and inorganic salts, etc.

The existing spray dryer is not enough when in use, heated air is discharged by the draught fan after being dried, so that the pressure in the device is kept stable, the safety of the device is kept, the heated air is continuously lost, a large amount of energy is wasted, and the use cost is high.

Disclosure of Invention

The invention aims to solve the defects in the prior art and provides a closed-cycle spray dryer.

In order to achieve the purpose, the invention adopts the following technical scheme:

a closed cycle spray dryer comprises a drying box, wherein the drying box is of a hollow cylinder structure, a first mounting plate is fixed on the side face of the drying box, a cyclone separator is fixed on the top of the first mounting plate, a connecting pipe is installed on the side face of the cyclone separator and inserted into the drying box, a first shell is installed on the top of the cyclone separator, the bottom of the first shell is communicated with the cyclone separator, a first fan is installed inside the first shell, a first air pipe is installed on the side face of the first shell and inserted into the drying box, a second shell penetrates through the top of the first shell, a pressure relief opening is formed in the side face of the second shell, a sliding block is movably connected inside the second shell, and a spring is installed between the sliding block and the top inside the second shell, the top of the drying box is fixed with a raw material barrel through a support, the top of the raw material barrel is provided with a motor, an output shaft of the motor is inserted into the raw material barrel and connected with a rotating shaft, the rotating shaft is connected with a connecting sleeve through a spline, the bottom of the side surface of the raw material barrel penetrates through a first conveying pipeline, one end, far away from the raw material barrel, of the first conveying pipeline is provided with a material suction pump, the bottom of the material suction pump is provided with a second conveying pipeline, the second conveying pipeline is inserted into the drying box and connected with a jet flow disc, one side, far away from the cyclone separator, of the drying box is provided with a second mounting plate, the top of the second mounting plate is fixed with a third shell, one side, far away from the electric heating wire, of the inside of the third shell is provided with an electric heating wire, one side, far away from the electric heating wire, of the inside of the third shell is provided with a, and dustproof cotton is adhered to one side of the third shell, which is far away from the second air pipe.

Preferably, the bottom of drying cabinet is installed the landing leg, the quantity of landing leg is three, three the landing leg is located the bottom of drying cabinet and is the distribution of circumference array.

Preferably, a feeding pipe penetrates through the top of the side surface of the raw material barrel.

Preferably, the side of the connecting sleeve is welded with a stirring rod, and the bottom of the jet flow plate is provided with a nozzle.

Preferably, the air outlet of the first fan is parallel to the first air pipe, and the air outlet of the second fan is parallel to the electric heating wire.

Preferably, the bottom of drying cabinet is for leaking hopper-shaped, the bottom of drying cabinet is provided with the discharging pipe.

Compared with the prior art, the invention has the beneficial effects that:

according to the invention, the raw materials are dried by arranging the jet disk, the heating wire and the second fan, the raw materials are atomized by the jet disk and are fully contacted with hot air, the drying effect is good, the gas-solid and gas-liquid separation is carried out on the heated air in the device by arranging the cyclone separator and the first fan, clean air is input into the drying box again, the waste of heat energy is avoided, the drying effect is further improved, and the pressure balance in the device is kept by arranging the second shell, the sliding block and the spring, so that the safety is improved.

Drawings

FIG. 1 is a schematic structural view of a closed cycle spray dryer according to the present invention;

fig. 2 is an enlarged schematic view of part a of a closed cycle spray dryer according to the present invention.

In the figure: the device comprises a drying box 1, a cyclone separator 2, a connecting pipe 3, a first shell 4, a first fan 5, a first air pipe 6, a second shell 7, a sliding block 8, a spring 9, a raw material barrel 10, a motor 11, a rotating shaft 12, a connecting sleeve 13, a first material conveying pipe 14, a material suction pump 15, a second material conveying pipe 16, a jet flow disc 17, a second air pipe 18, a third shell 19, an electric heating wire 20, a second fan 21 and dustproof cotton 22.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1-2, a closed cycle spray dryer comprises a drying box 1, the drying box 1 is a hollow cylinder structure, a first mounting plate is fixed on the side surface of the drying box 1, a cyclone separator 2 is fixed on the top of the first mounting plate, a connecting pipe 3 is installed on the side surface of the cyclone separator 2, the connecting pipe 3 is inserted into the drying box 1, a first casing 4 is installed on the top of the cyclone separator 2, the bottom of the first casing 4 is communicated with the cyclone separator 2, a first fan 5 is installed inside the first casing 4, a first air pipe 6 is installed on the side surface of the first casing 4, the first air pipe 6 is inserted into the drying box 1, a second casing 7 penetrates through the top of the first casing 4, a pressure relief opening is formed on the side surface of the second casing 7, a sliding block 8 is movably connected inside the second casing 7, a spring 9 is installed between the sliding block 8 and the top inside the second casing 7, a raw material barrel 10 is fixed on the top of a drying box 1 through a support, a motor 11 is installed on the top of the raw material barrel 10, an output shaft of the motor 11 is inserted into the raw material barrel 10 and connected with a rotating shaft 12, a connecting sleeve 13 is connected on the rotating shaft 12 through a spline, a first material conveying pipe 14 penetrates through the bottom of the side surface of the raw material barrel 10, a material suction pump 15 is installed at one end, away from the raw material barrel 10, of the first material conveying pipe 14, a second material conveying pipe 16 is installed at the bottom of the material suction pump 15, the second material conveying pipe 16 is inserted into the drying box 1 and connected with a jet disc 17, a second mounting plate is installed on one side, away from a cyclone separator 2, of the drying box 1, a third shell 19 is fixed on the top of the second mounting plate, an electric heating wire 20 is arranged on one side, away from the electric heating wire 20, a second fan 21 is installed on one side, away from, the second air pipe 18 is inserted into the side of the drying box 1, and the dust cotton 22 is adhered to one side of the third shell 19 far away from the second air pipe 18.

Wherein, the landing leg is installed to the bottom of drying cabinet 1, and the quantity of landing leg is three, and three landing leg is located the bottom of drying cabinet 1 and is the circumference array distribution.

Wherein, the top of the side of the raw material barrel 10 is penetrated with a feeding pipe.

Wherein, the side of the connecting sleeve 13 is welded with a stirring rod, and the bottom of the jet flow plate 17 is provided with a nozzle.

Wherein, the air outlet of the first fan 5 is parallel to the first air pipe 6, and the air outlet of the second fan 21 is parallel to the electric heating wire 20.

Wherein, the bottom of drying cabinet 1 is for leaking hopper-shaped, and the bottom of drying cabinet 1 is provided with the discharging pipe.

The working principle is as follows: injecting raw materials into a raw material barrel 10 through a feeding pipe, starting a motor 11, driving a rotating shaft 12 by the motor 11, driving a connecting sleeve 13 by the rotating shaft 12, driving a stirring rod by the connecting sleeve 13, stirring and uniformly mixing the raw materials, starting a material suction pump 15, a first fan 5, a second fan 21 and a cyclone separator 2, injecting the raw materials into a jet flow tray 17 through a first conveying pipe 14 and a second conveying pipe 16 by the material suction pump 15, spraying the raw materials into a drying box 1 through a nozzle on the jet flow tray 17, inputting air filtered by dustproof cotton 22 into the drying box 1 through an electric heating wire 20 by the second fan 21, drying the raw materials which are jetted into the drying box 1, enabling the dried raw materials to penetrate out of the drying box 1 through a discharging pipe, enabling hot air in the drying box 1 to enter the cyclone separator 2 through the connecting pipe 3, performing gas-solid-liquid separation by the cyclone separator 2, and obtaining clean air, inputting the clean air into the drying box 1 again by the second fan 5, meanwhile, as the pressure in the device rises, after the preset pressure is reached, the sliding block 8 is jacked up by the pressure to be provided with a pressure relief opening on the second shell 7 for pressure relief, the pressure balance in the device is kept, heated air in the device is circulated to enter the drying box 1, the waste of heat is avoided, and meanwhile, the drying effect of the device is improved.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. The closed cycle spray dryer comprises a drying box (1) and is characterized in that the drying box (1) is of a hollow cylinder structure, a first mounting plate is fixed on the side face of the drying box (1), a cyclone separator (2) is fixed on the top of the first mounting plate, a connecting pipe (3) is mounted on the side face of the cyclone separator (2), the connecting pipe (3) is inserted into the drying box (1), a first shell (4) is mounted on the top of the cyclone separator (2), the bottom of the first shell (4) is communicated with the cyclone separator (2), a first fan (5) is mounted inside the first shell (4), a first air pipe (6) is mounted on the side face of the first shell (4), the first air pipe (6) is inserted into the drying box (1), a second shell (7) penetrates through the top of the first shell (4), the pressure relief port is formed in the side face of the second shell (7), a sliding block (8) is movably connected inside the second shell (7), a spring (9) is installed between the sliding block (8) and the top inside the second shell (7), a raw material barrel (10) is fixed at the top of the drying box (1) through a support, a motor (11) is installed at the top of the raw material barrel (10), an output shaft of the motor (11) is inserted into the raw material barrel (10) and is connected with a rotating shaft (12), a connecting sleeve (13) is connected onto the rotating shaft (12) through a spline, a first material conveying pipe (14) penetrates through the bottom of the side face of the raw material barrel (10), a material suction pump (15) is installed at one end, far away from the raw material barrel (10), of the first material conveying pipe (14), a second material conveying pipe (16) is installed at the bottom of the material suction pump (15), the second material conveying pipe (16) is inserted into the drying box (1) and is connected with a jet flow disc, the drying cabinet is characterized in that a second mounting plate is installed on one side, far away from the cyclone separator (2), of the drying cabinet (1), a third shell (19) is fixed to the top of the second mounting plate, a heating wire (20) is arranged on one side of the inside of the third shell (19), a second fan (21) is installed on one side, far away from the heating wire (20), of the inside of the third shell (19), a second air pipe (18) is installed on the side face of the third shell (19), the side face, far away from the second air pipe (18), of the second shell (19) is pasted with dustproof cotton (22).

2. A closed cycle spray dryer according to claim 1, characterized in that the bottom of the drying box (1) is provided with three legs, said three legs being arranged in a circumferential array at the bottom of the drying box (1).

3. A closed cycle spray dryer according to claim 1 wherein the top of the side of the raw material barrel (10) is pierced with a feed pipe.

4. The closed-cycle spray dryer according to claim 1, wherein a stirring rod is welded to the side of the connecting sleeve (13), and a spray head is opened at the bottom of the spray disk (17).

5. A closed cycle spray dryer according to claim 1, wherein the outlet of the first fan (5) is parallel to the first air duct (6) and the outlet of the second fan (21) is parallel to the heating wire (20).

6. A closed cycle spray dryer according to claim 1, characterized in that the bottom of the drying box (1) is funnel-shaped, and the bottom of the drying box (1) is provided with a discharge pipe.