Spraying mechanism of spray drying tower

Abstract

The utility model discloses a spraying mechanism of a spray drying tower, which belongs to the technical field of spray drying towers and comprises a tower top, a support is fixedly connected to the top of the tower top, a reciprocating screw rod is rotatably connected between the support and the tower top, and a first motor is fixedly mounted at the top end of the support. An output shaft of the first motor is connected with the top end of a reciprocating lead screw, the outer side of the reciprocating lead screw is sleeved with a lifting base in a threaded mode, and the bottom face of the lifting base is fixedly connected with two sliding rods. The first motor is used for driving the reciprocating lead screw to rotate, the reciprocating lead screw and the lifting base are matched to drive the lifting base and the centrifugal disc to move up and down in a reciprocating mode, the height of the centrifugal disc spraying outwards is changed, and therefore the contact area of liquid mist and hot gas is changed. The problem that liquid mist is just dried by hot air and then is soaked by subsequent liquid mist is solved, and the working quality of the spraying mechanism of the spray drying tower is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of spray drying towers, and more specifically to a spray drying tower spray mechanism. Background Art

[0002] The spray drying tower is a device used for drying biological pesticides, medicines, and food microorganisms. Spray drying is a drying process in which a raw material liquid is placed in an atomizer and separated into droplets, and a powder-shaped product is obtained by directly contacting the droplets with hot air or other gases. In the process of producing feed additives, drying is also carried out through a spray drying tower. After searching, the patent with the authorization publication number of CN212548331U discloses a centrifugal spray mechanism of a spray drying tower, including a main centrifugal disk and an auxiliary centrifugal disk. The main centrifugal disk is funnel-shaped and can be rotatably installed in the spray drying tower around its own rotation center; the auxiliary centrifugal disk is coated on the outside of the main centrifugal disk at intervals, and its lower edge portion is fixedly connected to the main centrifugal disk, and a liquid channel is formed between the main centrifugal disk and the auxiliary centrifugal disk; a plurality of through holes are opened on the main centrifugal disk within the coating range of the auxiliary centrifugal disk, and the inner surface of the main centrifugal disk and the liquid channel are connected through the plurality of through holes. The utility model arranges the main and auxiliary centrifugal disks at intervals inside and outside, and connects the main and auxiliary centrifugal disks, so that the feed liquid is separated into two parts and centrifuged by the main and auxiliary centrifugal disks; at the same time, the centrifugal disks are set in a funnel shape, the path of the feed liquid is extended, the liquid film area is increased, the feed liquid is dispersed and atomized at the upper edges of the main and auxiliary centrifugal disks, and is fully in contact with the hot air in the drying tower, thereby improving the working efficiency of the spray drying tower.

[0003] However, the above patent solution has the following shortcomings: the centrifugal disc in the spray drying tower has a fixed height, and the liquid mist is always at the same height in contact with the hot air during centrifugal spraying. There is a possibility that the liquid mist is just dried by the hot air and then soaked by the subsequent liquid mist, which affects the drying efficiency; in addition, there is only two dispersion ports on the sides of the main and auxiliary centrifugal discs to make the dispersed liquid continuous, which affects its contact with the hot air. For this reason, we proposed a spray drying tower spray mechanism. Utility Model Content

[0004] In view of the problems existing in the prior art, the utility model aims to provide a spray mechanism for a spray drying tower.

[0005] In order to solve the above problems, the utility model adopts the following technical solutions:

[0006] A spray mechanism of a spray drying tower comprises a tower top, the top of the tower top is fixedly connected with a bracket, a reciprocating screw is rotatably connected between the bracket and the tower top, a first motor is fixedly installed on the top of the bracket, the output shaft of the first motor is connected to the top of the reciprocating screw, a lifting seat is threadedly sleeved on the outer side of the reciprocating screw, two sliding rods are fixedly connected to the bottom surface of the lifting seat, the bottom ends of the two sliding rods extend to the bottom of the tower top and are fixedly connected to an installation box, a second motor is fixedly installed in the inner cavity of the installation box, the output shaft of the second motor extends to the bottom of the installation box and is provided with a spray unit, and a cross-cutting mechanism is provided on the outer side of the installation box.

[0007] As a preferred embodiment of the present invention, the spray unit includes a centrifugal disk fixedly connected to the end of the second motor output shaft, a liquid inlet pipe is arranged in the middle of the centrifugal disk, a plurality of liquid separation grooves are arranged inside the centrifugal disk, a plurality of groups of external spray holes are opened on the outer side of the centrifugal disk, and the ends of the plurality of groups of external spray holes are respectively connected to the inner cavity of the liquid separation groove, an inner liquid separation hole is opened on the outer side of the liquid inlet pipe, and the inner liquid separation hole connects the liquid inlet pipe and the inner cavity of the liquid separation groove, a rotary joint is fixedly sleeved on the bottom of the liquid inlet pipe, and a liquid guide hose is fixedly connected to the bottom end of the rotary joint.

[0008] As a preferred solution of the utility model, the cross-cutting mechanism includes a fixed plate fixedly sleeved on the outside of the installation box, and a plurality of groups of cutting knives are fixedly connected to the bottom end of the fixed plate, and a cutting blade is provided at the end of the cutting knife.

[0009] As a preferred solution of the utility model, the top and bottom surfaces of the lifting seat are respectively fixedly connected with elastic tubes, the ends of the two elastic tubes are respectively connected to the top surface of the bracket inner cavity and the top surface of the tower top, and the elastic tube sleeve is arranged on the outside of the reciprocating screw.

[0010] As a preferred solution of the utility model, the side surface of the lifting seat is in contact with the inner wall of the bracket.

[0011] As a preferred solution of the utility model, the position of the outer spray hole is matched with the position of the cutting knife.

[0012] Compared with the prior art, the advantages of the present invention are:

[0013] (1) In the utility model, the first motor is used to drive the reciprocating screw to rotate, and the cooperation between the reciprocating screw and the lifting seat is used to drive the lifting seat and the centrifugal disk to move back and forth up and down, thereby changing the height of the centrifugal disk spraying outward, thereby changing the area where the liquid mist and the hot air are in contact, avoiding the problem that the liquid mist is just dried by the hot air and then soaked by the subsequent liquid mist, thereby improving the working quality of the spray mechanism of the spray drying tower.

[0014] (2) In the utility model, the liquid is introduced into the liquid inlet pipe through the liquid guiding hose and the rotary joint, and the liquid in the liquid inlet pipe is dispersed from the inner liquid separation hole to the liquid separation tank. In addition, the centrifugal force generated by the rotation of the centrifugal disk is used to make the liquid in the liquid separation tank spray out from the outer spray hole. The liquid mist sprayed from the outer spray hole is cut again by the cutting knife and the cutting edge to ensure the dispersion degree of the liquid mist, so as to ensure the contact degree between the liquid mist and the hot air. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0016] Figure 2 It is a cross-sectional schematic diagram of the installation box of the utility model;

[0017] Figure 3 It is a cross-sectional schematic diagram of the centrifugal disc of the utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the fixed disk of the utility model;

[0019] Figure 5 It is a structural schematic diagram of the cutting knife of the utility model.

[0020] Description of the numbers in the figure:

[0021] 1. Tower top; 2. Bracket; 3. Reciprocating screw; 4. First motor; 5. Lifting seat; 6. Sliding rod; 7. Mounting box; 8. Second motor; 9. Spray unit; 10. Cross-cutting mechanism; 11. Elastic tube; 12. Centrifugal disk; 13. Liquid inlet pipe; 14. Liquid separation tank; 15. External spray hole; 16. Internal liquid separation hole; 17. Rotary joint; 18. Liquid guide hose; 19. Fixed disk; 20. Cutting knife; 21. Cutting blade. DETAILED DESCRIPTION

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the utility model in conjunction with the drawings 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.

[0023] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" 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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0025] Example:

[0026] See also Figure 1-5 A spray mechanism of a spray drying tower comprises a tower top 1, a bracket 2 is fixedly connected to the top of the tower top 1, a reciprocating screw rod 3 is rotatably connected between the bracket 2 and the tower top 1, a first motor 4 is fixedly installed on the top of the bracket 2, the output shaft of the first motor 4 is connected to the top of the reciprocating screw rod 3, a lifting seat 5 is threadedly sleeved on the outer side of the reciprocating screw rod 3, two sliding rods 6 are fixedly connected to the bottom surface of the lifting seat 5, the bottom ends of the two sliding rods 6 extend to the bottom of the tower top 1 and are fixedly connected to an installation box 7, a second motor 8 is fixedly installed in the inner cavity of the installation box 7, the output shaft of the second motor 8 extends to the bottom of the installation box 7 and is provided with a spray unit 9, and a cross-cutting mechanism 10 is provided on the outer side of the installation box 7.

[0027] For details, please refer to Figure 1 and Figure 3 The spray unit 9 includes a centrifugal disc 12 fixedly connected to the end of the output shaft of the second motor 8, a liquid inlet pipe 13 is arranged in the middle of the centrifugal disc 12, a plurality of liquid separation grooves 14 are arranged inside the centrifugal disc 12, a plurality of groups of external spray holes 15 are arranged on the outer side of the centrifugal disc 12, and the ends of the plurality of groups of external spray holes 15 are respectively connected to the inner cavity of the liquid separation groove 14, an inner liquid separation hole 16 is arranged on the outer side of the liquid inlet pipe 13, and the inner liquid separation hole 16 communicates with the inner cavity of the liquid inlet pipe 13 and the liquid separation groove 14, and a rotary joint 17 is fixedly sleeved at the bottom of the liquid inlet pipe 13, and a liquid guide hose 18 is fixedly connected to the bottom end of the rotary joint 17.

[0028] In this embodiment, the end of the liquid guiding hose 18 is fixedly sleeved to the outside of the drying tower so as to guide the liquid to be dried into the centrifugal disk 12 .

[0029] For details, please refer to Figure 1 , Figure 4 and Figure 5 The cross-cutting mechanism 10 includes a fixed plate 19 fixedly sleeved on the outside of the installation box 7, and a plurality of groups of cutting knives 20 are fixedly connected to the bottom end of the fixed plate 19, and a cutting blade 21 is provided at the end of the cutting knife 20.

[0030] In this embodiment, the cutting blade 20 is located on the side of the centrifugal disc 12 .

[0031] For details, please refer to Figure 1 and Figure 2 The top and bottom surfaces of the lifting seat 5 are respectively fixedly connected with elastic tubes 11, and the ends of the two elastic tubes 11 are respectively connected to the top surface of the inner cavity of the bracket 2 and the top surface of the tower top 1, and the elastic tubes 11 are sleeved on the outside of the reciprocating screw rod 3.

[0032] In this embodiment, the reciprocating screw rod 3 is protected by an elastic tube 11 .

[0033] For details, please refer to Figure 2 , the side surface of the lifting seat 5 and the inner wall of the bracket 2 are in contact with each other.

[0034] In this embodiment, the inner wall of the bracket 2 is used to limit the lifting seat 5 so that the lifting seat 5 can only move along the axial direction of the reciprocating screw rod 3 .

[0035] For details, please refer to Figure 1 , Figure 3 and Figure 4 The position of the outer spray hole 15 is matched with the position of the cutting knife 20.

[0036] In this embodiment, it is ensured that the liquid mist sprayed out of the outer spray hole 15 can be chopped up by the cutting edge 21 at the front end of the cutting knife 20 .

[0037] Working principle: When in use, first start the second motor 8 to drive the centrifugal disc 12 to rotate, and at the same time, the feed liquid is introduced into the liquid inlet pipe 13 through the liquid guide hose 18. When the centrifugal disc 12 rotates, the feed liquid in the liquid inlet pipe 13 enters the liquid separation tank 14 from the inner liquid separation hole 16. In addition, the centrifugal force of the rotation of the centrifugal disc 12 moves the feed liquid to the side of the liquid separation tank 14, so that the feed liquid is sprayed outward from the outer spray hole 15, and then the liquid mist sprayed from the outer spray hole 15 is cut by the outer cutting knife 20 and the cutting edge 21. Cutting makes the liquid mist sprayed from the outer spray hole 15 more dispersed so as to contact the hot air in the drying tower. Finally, the first motor 4 is started to drive the reciprocating screw 3 to rotate. The cooperation between the reciprocating screw 3 and the lifting seat 5 drives the lifting seat 5, the slide bar 6, the installation box 7, the second motor 8 and the centrifugal disk 12 to move back and forth up and down, thereby changing the height of the centrifugal disk 12 spraying outwards, and then changing the area where the liquid mist and the hot air are in contact, so as to avoid the problem that the liquid mist is just dried by the hot air and then soaked by the subsequent liquid mist.

[0038] The above is only a preferred specific implementation method of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes within the technical scope disclosed by the utility model according to the technical solution and improved ideas of the utility model, which should be included in the protection scope of the utility model.

Claims

1. A spray drying tower spray mechanism, comprising a tower top (1), characterized in that: The top of the tower top (1) is fixedly connected with a bracket (2), a reciprocating screw (3) is rotatably connected between the bracket (2) and the tower top (1), a first motor (4) is fixedly installed at the top of the bracket (2), the output shaft of the first motor (4) is connected to the top of the reciprocating screw (3), the outer side of the reciprocating screw (3) is threadedly sleeved with a lifting seat (5), the bottom surface of the lifting seat (5) is fixedly connected with two sliding rods (6), the bottom ends of the two sliding rods (6) both extend to the bottom of the tower top (1) and are fixedly connected with an installation box (7), the inner cavity of the installation box (7) is fixedly installed with a second motor (8), the output shaft of the second motor (8) extends to the bottom of the installation box (7) and is provided with a spray unit (9), and the outer side of the installation box (7) is provided with a cross-cutting mechanism (10).

2. A spray drying tower spray mechanism according to claim 1, characterized in that: The spray unit (9) comprises a centrifugal disc (12) fixedly connected to the end of the output shaft of the second motor (8); a liquid inlet pipe (13) is arranged in the middle of the centrifugal disc (12); a plurality of liquid separation grooves (14) are arranged inside the centrifugal disc (12); a plurality of groups of external spray holes (15) are arranged on the outer side surface of the centrifugal disc (12); the ends of the plurality of groups of external spray holes (15) are respectively connected to the inner cavity of the liquid separation groove (14); an inner liquid separation hole (16) is arranged on the outer side of the liquid inlet pipe (13); the inner liquid separation hole (16) communicates with the liquid inlet pipe (13) and the inner cavity of the liquid separation groove (14); a rotary joint (17) is fixedly sleeved at the bottom of the liquid inlet pipe (13); and a liquid guide hose (18) is fixedly connected to the bottom end of the rotary joint (17).

3. A spray drying tower spray mechanism according to claim 2, characterized in that: The cross-cutting mechanism (10) comprises a fixed plate (19) fixedly sleeved on the outside of the installation box (7), a plurality of groups of cutting knives (20) are fixedly connected to the bottom end of the fixed plate (19), and a cutting blade (21) is provided at the end of the cutting knife (20).

4. A spray drying tower spray mechanism according to claim 1, characterized in that: The top and bottom surfaces of the lifting seat (5) are respectively fixedly connected with elastic tubes (11), the ends of the two elastic tubes (11) are respectively connected to the top surface of the inner cavity of the bracket (2) and the top surface of the tower top (1), and the elastic tubes (11) are sleeved on the outside of the reciprocating screw rod (3).

5. A spray drying tower spray mechanism according to claim 1, characterized in that: The side surface of the lifting seat (5) is in contact with the inner wall of the bracket (2).

6. A spray drying tower spray mechanism according to claim 3, characterized in that: The position of the outer spray hole (15) matches the position of the cutting knife (20).

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