Air heating device for spray drying tower

Abstract

An air heating device for a spray drying tower comprises a drying tower, a purification tank is arranged on the side face of the drying tower, a conveying pipe is arranged at the top of the drying tower, a hot air supply pipe is arranged on the drying tower, an auxiliary fan is arranged in the hot air supply pipe, the other end of the hot air supply pipe is connected with a heating component, and a normal-temperature air supply pipe is arranged at the other end of the heating component. A main fan is arranged in the normal-temperature air supply pipe, and an air inlet filter is arranged at the front end of the main fan; the heating component comprises a heating outer pipe, air supply pipes and a heating inner pipe, the heating outer pipe is connected between the normal-temperature air supply pipe and the hot air supply pipe, a sealing plate is arranged on the end face of the heating outer pipe, a plurality of air supply pipes penetrating through the sealing plate are arranged in the heating outer pipe, and the heating outer pipe and the heating inner pipe are arranged, so that the air supply pipes can be wrapped by the heating outer pipe; and meanwhile, the heating inner pipe located in the air supply pipe can heat the air in the center of the air supply pipe, the effect of evenly heating the air is achieved, and the drying quality of products is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to spray drying technical field, concretely to a kind of air heating device for spray drying tower. BACKGROUND

[0002] Spray drying is a method that systematization technology is applied to material drying, dilute material is atomized in drying chamber, water is rapidly vaporized in the contact with hot air, that is, dry product is obtained,

[0003] The existing air heating device for spray drying, the air near the pipe wall is faster, the air far from the pipe wall is slower, leading to uneven air heating, making the temperature of hot air entering the drying tower uneven, so that the quality of the dried product is affected. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of air heating device for spray drying tower, by setting heating outer tube and heating inner tube, heating outer tube can be wrapped with air supply pipe, so that air can be heated efficiently, while the heating inner tube located in air supply pipe can heat the air in the center position of air supply pipe, reach the effect of uniform air heating, improve the drying quality of product.

[0005] The utility model adopts the following technical scheme: an air heating device for spray drying tower, including drying tower, the side of drying tower is equipped with purification tank, top is equipped with material conveying pipe, the drying tower is equipped with hot air supply pipe, the hot air supply pipe is equipped with auxiliary fan, the other end of hot air supply pipe is connected with heating component, the other end of heating component is equipped with normal temperature air supply pipe, the normal temperature air supply pipe is equipped with main fan, the front end of main fan is equipped with air inlet filter;

[0006] The heating component includes heating outer tube, air supply pipe and heating inner tube, the heating outer tube is connected between normal temperature air supply pipe and hot air supply pipe, and the end surface of heating outer tube is provided with sealing plate, a plurality of air supply pipes penetrating the sealing plate are arranged in the heating outer tube, the heating inner tube is arranged in the air supply pipe and connected by fixing frame.

[0007] The front end of hot air supply pipe is equipped with shunt component, and the shunt component is used to divide air into drying tower evenly.

[0008] The shunt component includes shunt pipe, electric telescopic rod and conical part, the shunt pipe is connected to the end surface of hot air supply pipe, and the opening faces the inside of drying tower, the electric telescopic rod is arranged in the shunt pipe, and the conical part is connected to the lower part of electric telescopic rod.

[0009] The conical part is detachably connected with electric telescopic rod, and the surface of conical part is provided with pressure sensor.

[0010] Preferably, the heating outer tube and the air supply pipe are both arranged in a bent manner, which can increase the time length of air staying in the air supply pipe.

[0011] Preferably, a baffle is arranged at the position of the heating component end in the hot air supply pipe, which is used for buffering air and increasing the staying time of air in the heating component.

[0012] Preferably, a heat insulation lining is arranged in the hot air supply pipe, which is used for reducing the heat conduction efficiency of the hot air to the outside.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. The heating outer tube and the heating inner tube are arranged, the heating outer tube can wrap the air supply pipe, so that the air can be heated efficiently, and the heating inner tube located in the air supply pipe can heat the air at the center position of the air supply pipe, so that the air is uniformly heated, and the drying quality of the product is improved.

[0015] 2. The electric telescopic rod and the conical part are arranged, the conical part can disperse and deliver the air discharged from the shunt pipe into the drying tower, so that the air can be evenly distributed, and the height of the conical part can be adjusted by the electric telescopic rod, so that the gap between the conical part and the shunt pipe can be adjusted, and the wind speed and the air volume can be controlled. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structural schematic view of the utility model;

[0017] Figure 2 It is a structural schematic view of the drying tower in the utility model;

[0018] Figure 3 It is a structural schematic view of the heating component in the utility model;

[0019] Figure 4 It is a structural schematic view of the shunt component in the utility model.

[0020] In the drawing: 1, drying tower; 2, purification tank; 3, air inlet filter; 4, normal-temperature air supply pipe; 5, main air blower; 6, heating component; 601, heating outer tube; 602, air supply pipe; 603, fixing frame; 604, heating inner tube; 7, shunt component; 701, shunt pipe; 702, electric telescopic rod; 703, pressure sensor; 704, conical part; 8, material conveying pipe; 9, auxiliary air blower; 10, hot air supply pipe; 11, baffle; 12, heat insulation lining. DETAILED DESCRIPTION

[0021] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described, obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0022] Please refer to Figures 1-4 The utility model provides an air heating device for spray drying tower, including drying tower 1, the side of drying tower 1 is equipped with the purification jar 2, is equipped with the material conveying pipe 8 at the top, is equipped with hot -blast air supply pipe 10 on drying tower 1, is equipped with auxiliary fan 9 in hot -blast air supply pipe 10, and the other end of hot -blast air supply pipe 10 is connected with heating component 6, and the other end of heating component 6 is equipped with normal temperature air supply pipe 4, and is equipped with main fan 5 in normal temperature air supply pipe 4, and the front end of main fan 5 is equipped with air inlet filter 3;

[0023] Heating component 6 includes heating outer tube 601, air supply pipe 602 and heating inner tube 604, heating outer tube 601 is connected between normal temperature air supply pipe 4 and hot -blast air supply pipe 10, and the end face of heating outer tube 601 is equipped with the sealing plate, and heating outer tube 601 is equipped with a plurality of air supply pipes 602 that pass through the sealing plate, and air supply pipe 602 is equipped with heating inner tube 604, and heating inner tube 604 is connected through fixing frame 603;

[0024] In the utility model, heating outer tube 601 and heating inner tube 604 are arranged, heating outer tube 601 can wrap air supply pipe 602, so that the heating medium can be filled in the outside of air supply pipe 602, air supply pipe 602 is heated from the outside, so that the air close to the inner wall of air supply pipe 602 can be quickly heated, and heating inner tube 604 can heat the air in the center of air supply pipe 602, so that the air far away from the inner wall of air supply pipe 602 can also be uniformly heated.

[0025] Heating outer tube 601 and air supply pipe 602 are both arranged in a bent manner, which can increase the residence time of air in air supply pipe 602.

[0026] By arranging air supply pipe 602, air supply pipe 602 can divide the air into multiple streams and pass through heating component 6, so that a small amount of air can be quickly heated, and the heating can be uniform, and air supply pipe 602 can buffer the air by the design of bending, which can improve the residence time of air in air supply pipe 602 and further improve the heating efficiency.

[0027] The position of the end of heating component 6 in hot -blast air supply pipe 10 is provided with baffle 11, and baffle 11 is used for buffering air and improving the residence time of air in heating component 6.

[0028] By setting the baffle 11, the air discharged by the heating component 6 is blocked and buffered, and the flow rate of the air is further reduced, so that the residence time of the air in the heating component 6 is increased.

[0029] The hot air supply pipe 10 is provided with a heat insulation lining 12, which can buffer the impact of the air on the pipe wall and reduce heat loss.

[0030] The front end of the hot air supply pipe 10 is provided with a flow dividing component 7, which is used for dividing the air into the drying tower 1, and the flow dividing component 7 comprises a flow dividing pipe 701, an electric telescopic rod 702 and a tapered piece 704.

[0031] By setting the electric telescopic rod 702 and the tapered piece 704, the tapered piece 704 can change the direction of the airflow, so that the air is evenly divided into the drying tower 1, and the electric telescopic rod 702 can move the tapered piece 704, so that the gap between the tapered piece 704 and the flow dividing pipe 701 can be adjusted, and the purpose of controlling the flow rate or flow of the air is achieved by adjusting the gap.

[0032] The tapered piece 704 is detachably connected with the electric telescopic rod 702, and the surface of the tapered piece 704 is provided with a pressure sensor 703.

[0033] By setting the pressure sensor 703, the air pressure blowing to the tapered piece 704 can be detected, the air supply amount can be accurately controlled, and the tapered piece 704 is detachably connected with the electric telescopic rod 702, so that the tapered piece 704 with a corresponding slope can be replaced.

[0034] The working process of the utility model is as follows:

[0035] In work, the main fan 5 draws the air into the normal temperature air supply pipe 4 through the air inlet filter 3, then the air enters the air supply pipe 602 through the normal temperature air supply pipe 4, the air is heated synchronously through the heating outer pipe 601 and the heating inner pipe 604, then enters the hot air supply pipe 10, and is sent into the flow dividing pipe 701 after being pressurized by the auxiliary fan 9, and finally is divided into the drying tower 1 through the tapered piece 704, so that the spray drying is realized.

[0036] The above is only a specific embodiment of the utility model, but the technical features of the utility model are not limited to this. Any simple change, equivalent replacement or modification made on the basis of the utility model to solve basically the same technical problem and realize basically the same technical effect is covered in the protection scope of the utility model.

Claims

1. An air heating device for a spray drying tower, comprising a drying tower (1), a purification tank (2) provided on the side of the drying tower (1), and a feed pipe (8) provided on the top, characterized in that: The drying tower (1) is provided with a hot air supply pipe (10), one end of the hot air supply pipe (10) is connected to an auxiliary fan (9), the other end of the hot air supply pipe (10) is connected to a heating component (6), the other end of the heating component (6) is connected to a normal temperature air supply pipe (4), one end of the normal temperature air supply pipe (4) is connected to a main fan (5), and the front end of the main fan (5) is connected to an air inlet filter (3); The heating component (6) comprises a heating outer tube (601), an air supply tube (602) and a heating inner tube (604); the heating outer tube (601) is connected between the normal temperature air supply tube (4) and the hot air supply tube (10); a sealing plate is provided on the end face of the heating outer tube (601); a plurality of air supply tubes (602) penetrating the sealing plate are provided in the heating outer tube (601); a heating inner tube (604) is provided in the air supply tube (602); and the heating inner tube (604) is connected via a fixing frame (603); A diversion component (7) is provided at the front end of the hot air supply pipe (10), and the diversion component (7) comprises a diversion pipe (701), an electric telescopic rod (702) and a conical member (704). The diversion pipe (701) is connected to the end face of the hot air supply pipe (10), and its opening faces the inside of the drying tower (1). The electric telescopic rod (702) is provided in the diversion pipe (701). The conical member (704) is connected under the electric telescopic rod (702). The conical member (704) and the electric telescopic rod (702) are detachably connected, and a pressure sensor (703) is provided on the surface of the conical member (704).

2. The air heating device for a spray drying tower according to claim 1, characterized in that: The outer heating tube (601) and the air supply tube (602) are both bent.

3. The air heating device for a spray drying tower according to claim 1, characterized in that: A baffle (11) is provided at the location where the hot air supply pipe (10) is connected to the heating component (6).

4. The air heating device for a spray drying tower according to claim 1, characterized in that: A heat-insulating lining (12) is provided in the hot air supply pipe (10).

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