Pressure spray drying tower

Abstract

The utility model discloses a pressure spray drying tower which comprises a tower body, the top of the tower body is connected with a pressure box through an ingress pipe, an annular blade is arranged close to the upper end in the tower body, an air blowing box is arranged on the outer side of the tower body, an arc-shaped blade is connected in the air blowing box through a second motor, and a heat conduction head is arranged at the end of the air blowing box in the tower body. A heating plate is arranged on the side, close to the heat conduction head, of the air blowing box, a screen is arranged in the tower body and close to the lower end, a soaking part is arranged in the tower body, the middle of the soaking part protrudes towards one side of the center of the tower body, a soaking cavity is formed in the soaking part, the heat conduction head is communicated with the soaking cavity, and a plurality of nozzles are arranged on the side wall, close to the center of the tower body, of the soaking part. By arranging the soaking piece in the tower body and arranging the spray heads on the soaking piece, the air spraying area of raw materials is greatly increased, the heating area of the raw materials is increased, the drying effect and uniformity of the raw materials are improved, in addition, the soaking piece can play a role in flow guiding, the raw materials can be prevented from flowing down from the side deviating from the spray heads, and the drying and heating effect is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of drying, in particular to a pressure spray drying tower. Background Art

[0002] A pressure spray drying tower is a kind of drying tower, mainly used for drying biological pesticides, medicines, and food microorganisms. Spray drying is a drying process in which the raw material liquid is put into an atomizer and separated into droplets, and the droplets are directly contacted with hot air or other gases to obtain a powdery product. For example, in a seasoning powder production factory, a pressure spray drying tower is generally equipped. The raw material liquid is input into the spray drying tower and then dried into powdery seasonings.

[0003] For a pressure spray drying tower, in the prior art, after retrieval, the Chinese patent publication number is a pressure spray drying tower for powdery seasonings, as Figure 1 shown, which mainly includes a tower body a. The top of the tower body a is connected to a pressure box through a conduit. An annular air blade b is arranged near the upper end inside the tower body a. The annular air blade b is connected to a motor c. A blower box d is arranged outside the tower body a on the lower side of the annular air blade b. An arc-shaped air blade e is arranged inside the blower box d. The arc-shaped air blade e is connected to a second motor f. An electric heating plate g is arranged inside the blower box d on the side close to the center of the tower body a. A heat transfer head h is arranged inside the tower body a on the side close to the center of the tower body a. A screen k is arranged inside the tower body a on the lower side of the blower box.

[0004] In the prior art, for a pressure spray drying tower with a technical solution similar to the above, it is found that there are areas to be improved during actual implementation: the contact area between the air outlet of the heat transfer head and the raw material is small. In addition, a considerable part of the raw material passes through the back side or the edge side of the air outlet of the heat transfer head, resulting in less heat absorption of the raw material and uneven heat absorption, thereby reducing the drying and powdering effect of the raw material. Summary of the Utility Model

[0005] In view of the deficiencies and defects existing in the prior art, the purpose of the present utility model is to provide a pressure spray drying tower, which solves the problems existing in the pressure spray drying tower in the prior art, that is, the contact area between the air outlet of the heat transfer head and the raw material is small. In addition, a considerable part of the raw material passes through the back side or the edge side of the air outlet of the heat transfer head, resulting in less heat absorption of the raw material and uneven heat absorption, thereby reducing the drying and powdering effect of the raw material.

[0006] To solve the above technical problems, the present utility model adopts the following technical solutions: A pressure spray drying tower, comprising a tower body. The top of the tower body is connected to a pressure box through an inlet pipe. An annular blade is provided near the upper end inside the tower body, and the annular blade is connected to a first motor. A blower box communicating with the tower body is provided outside the tower body. An arc-shaped wind blade is connected in the blower box through a second motor. A heat conduction head is provided at the end of the blower box inside the tower body. A heating plate is provided on one side of the blower box close to the heat conduction head. A screen is provided near the lower end inside the tower body. A heat equalizing member is provided inside the tower body. The heat equalizing member is annular, and the middle part of the heat equalizing member protrudes towards the center of the tower body. A heat equalizing cavity is provided inside the heat equalizing member. The heat conduction head communicates with the heat equalizing cavity. A plurality of nozzles communicating with the heat equalizing cavity are provided on one side wall of the heat equalizing member close to the center of the tower body. A stirring member is provided above the screen at the center of the tower body.

[0007] As a further improvement of the present utility model, the stirring member includes a stirring shaft, and stirring blades are provided on the stirring shaft. The bottom of the stirring shaft is connected to a third motor, and the third motor is connected to the tower body through a lower support rod.

[0008] As a further improvement of the present utility model, the upper end of the stirring shaft is rotatably connected to an upper support rod, and the upper support rod is fixed on the tower body.

[0009] As a further improvement of the present utility model, a deflector plate is provided on the lower support rod, and the deflector plate inclines towards the side away from the tower body from top to bottom.

[0010] Compared with the prior art, the present utility model has the following advantages:

[0011] 1. By providing a heat equalizing member inside the tower body, a heat equalizing cavity is provided inside the heat equalizing member. The heat conduction head communicates with the heat equalizing cavity. A plurality of nozzles communicating with the heat equalizing cavity are provided on one side wall of the heat equalizing member close to the center of the tower body. Then the hot air in the heat conduction head is introduced into the heat equalizing cavity and sprayed out from the plurality of nozzles by the heat equalizing cavity, greatly increasing the air spraying area for the raw materials, improving the heat receiving area of the raw materials, thereby improving the drying effect and uniformity of the raw materials. In addition, the heat equalizing member is annular, and the middle part of the heat equalizing member protrudes towards the center of the tower body. Then the heat equalizing member can play a certain guiding role, enabling the raw materials to be guided towards the side of the nozzles. While increasing the contact area between the raw materials and the heat equalizing member, it can prevent the raw materials from flowing down from the side away from the nozzles, improving the drying and heating effect.

[0012] 2. By providing a stirring member and setting the stirring member as a structure of a stirring shaft and stirring blades, the raw materials can be stirred and flipped, improving the drying uniformity of the raw materials. In addition, the rotation of the stirring blades can increase the air flow and improve the drying effect of the hot air.

[0013] 3. By providing a deflector plate on the lower support rod, the raw materials gathering towards the center can be dispersed and guided outwards, facilitating the spreading of the raw materials for the filtration of the screen. Brief Description of the Drawings

[0014] The present utility model will be further described below in conjunction with the accompanying drawings:

[0015] Figure 1 is a schematic structural diagram of the prior art;

[0016] Figure 2 is a schematic structural diagram of the present utility model;

[0017] In the figure: 1, tower body; 2, pressure box; 3, inlet pipe; 4, annular blade; 5, first motor; 6, air blower box; 7, arc-shaped air blade; 8, heat conduction head; 9, second motor; 10, heating plate; 11, screen; 12, heat equalizing member; 13, heat equalizing cavity; 14, spray head; 15, stirring shaft; 16, stirring blade; 17, third motor; 18, lower support rod; 19, upper support rod; 20, flow guiding plate. Detailed Description of the Preferred Embodiment

[0018] The following further describes the present utility model in detail in conjunction with the attached Figure 2 drawings. For clearer illustration, only the structures related to the innovative points of the present utility model are shown in the figures.

[0019] For the convenience of description, a coordinate system is now defined as Figure 2 shown, with the left-right direction as the horizontal direction, the front-back direction as the longitudinal direction, and the up-down direction as the vertical direction.

[0020] The embodiment of the present utility model discloses a pressure spray drying tower. Refer to Figure 2, A pressure spray drying tower, comprising a tower body 1. The top of the tower body 1 is connected to a pressure tank 2 through an inlet pipe 3. An annular blade 4 is provided near the upper end inside the tower body 1, and the annular blade 4 is connected to a first motor 5. A blower box 6 communicating with the tower body 1 is provided outside the tower body 1. An arc-shaped wind blade 7 is connected to the blower box 6 through a second motor 9. A heat conduction head 8 is provided at the end of the blower box 6 inside the tower body 1. A heating plate 10 is provided on one side of the blower box 6 close to the heat conduction head 8. A screen 11 is provided near the lower end inside the tower body 1. A heat equalizing member 12 is provided inside the tower body 1. The heat equalizing member 12 is annular, and the middle part of the heat equalizing member 12 protrudes towards the center of the tower body 1. A heat equalizing cavity 13 is provided inside the heat equalizing member 12. The heat conduction head 8 communicates with the heat equalizing cavity 13. A plurality of nozzles 14 communicating with the heat equalizing cavity 13 are provided on the side wall of the heat equalizing member 12 close to the center of the tower body 1. A stirring member is provided above the screen 11 at the center of the tower body. The stirring member includes a stirring shaft 15. Stirring blades 16 are provided on the stirring shaft 15. The bottom of the stirring shaft 15 is connected to a third motor 17. The third motor 17 is connected to the tower body 1 through a lower support rod 18. Then the stirring member can stir and turn the raw materials, improving the drying uniformity of the raw materials. In addition, the rotation of the stirring blades 16 can increase the air flow and improve the drying effect of the hot air. In addition, the upper end of the stirring shaft 15 is rotatably connected to an upper support rod 19, and the upper support rod 19 is fixed on the tower body 1.

[0021] In addition, a flow guiding plate 20 is provided on the lower support rod 18. The flow guiding plate 20 inclines away from the tower body 1 from top to bottom, so that the raw materials gathering towards the center can be dispersed and guided outwards, facilitating the spreading of the raw materials for the filtration of the screen 11.

[0022] In the present utility model, a heat equalizing member 12 is provided inside the tower body 1. A heat equalizing cavity 13 is provided inside the heat equalizing member 12. The heat conduction head 8 communicates with the heat equalizing cavity 13. A plurality of nozzles 14 communicating with the heat equalizing cavity 13 are provided on the side wall of the heat equalizing member 12 close to the center of the tower body 1. Then the hot air in the heat conduction head 8 is introduced into the heat equalizing cavity 13 and sprayed out from the plurality of nozzles 14 by the heat equalizing cavity 13, greatly increasing the air spraying area for the raw materials, increasing the heat receiving area of the raw materials, thereby improving the drying effect and uniformity of the raw materials. In addition, the heat equalizing member 12 is annular, and the middle part of the heat equalizing member 12 protrudes towards the center of the tower body 1. Then the heat equalizing member 12 can play a certain flow guiding role, enabling the raw materials to flow towards one side of the nozzles 14. While increasing the contact area between the raw materials and the heat equalizing member 12, it can prevent the raw materials from flowing down from the side away from the nozzles 14, improving the drying and heating effect.

[0023] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. It should be understood that the specific embodiments described herein are only for understanding the present utility model and are not used to limit the present utility model. All other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present utility model.

Claims

1. A pressure spray drying tower, comprising a tower body, the top of the tower body is connected to a pressure box through an inlet pipe, an annular blade is provided near the upper end of the tower body, the annular blade is connected to a first motor, a blower box connected to the tower body is provided outside the tower body, the blower box is connected to an arc-shaped fan blade through a second motor, a heat conducting head is provided at the end of the blower box in the tower body, a heating plate is provided on the side of the blower box close to the heat conducting head, and a screen is provided near the lower end of the tower body, characterized in that: A heat equalizing element is provided in the tower body, the heat equalizing element is annular, the middle part of the heat equalizing element protrudes toward the center of the tower body, a heat equalizing cavity is provided in the heat equalizing element, the heat conductive head is connected with the heat equalizing cavity, a plurality of nozzles connected with the heat equalizing cavity are provided on a side wall of the heat equalizing element close to the center of the tower body, and a stirring element is provided on the upper side of the screen in the center of the tower body.

2. A pressure spray drying tower according to claim 1, characterized in that: The stirring member comprises a stirring shaft, on which stirring blades are arranged, the bottom of the stirring shaft is connected to a third motor, and the third motor is connected to the tower body through a lower support rod.

3. A pressure spray drying tower according to claim 2, characterized in that: The upper end of the stirring shaft is rotatably connected to an upper support rod, and the upper support rod is fixed on the tower body.

4. A pressure spray drying tower according to claim 2, characterized in that: The lower support rod is provided with a guide plate, and the guide plate is inclined from top to bottom toward a side away from the tower body.

Images