A preservative powder screw feeding device

Abstract

The utility model relates to spiral feeding device technical field, concretely is a kind of preservative powder spiral feeding device, including bottom plate, shell is supported and fixed on the bottom plate by support, grinding assembly is provided in the shell, the primary crushing assembly bottom end is linked with grinding assembly, a plurality of hollow grinding rods are slidably arranged on the filter cartridge inner wall, heating ring is fixed on the feeding cylinder outer wall, in the utility model, the preservative powder that is input is primary crushed by two crushing rollers, hollow shaft rotates and can drive hollow grinding rod to slide on the filter cartridge inner wall by hollow connecting rod, during turning, the arc edge in its direction of rotation is used to grind the agglomerated preservative powder, play the role of secondary crushing, and preservative powder can be evenly heated and dried when turning, and the powder in its inside is transported when auger rotates, and is heated and dried again using heating ring during conveying.

Description

Technical Field

[0001] This utility model relates to the technical field of spiral feeding devices, specifically a spiral feeding device for preservative powder. Background Technology

[0002] In the production processes of food, chemical, and pharmaceutical industries, the precise and stable delivery of preservative powders is a key link in ensuring the quality of subsequent processes. Currently, the industry generally uses screw feeders to transfer such powders. Due to their advantages such as simple structure, small footprint, and flexible conveying direction, screw feeders have become the mainstream equipment for powder material conveying.

[0003] Currently, screw conveyors mainly consist of a drive motor, a screw shaft, a feeding cylinder, and inlet and outlet ports. They move materials along the feeding cylinder by rotating the screw blades to achieve the conveying function. For example, a Chinese patent with publication number CN215709401U discloses a screw conveyor device. In this device, a first air inlet is set on the feeding cylinder and connected to the inner cavity of the feeding cylinder. The first air inlet is inclined towards the conveying direction of the feeding cylinder and is located between the inlet and outlet ports in the conveying direction of the feeding cylinder. Gas can enter the feeding cylinder through the first air inlet and blow the powder in the feeding cylinder to the outlet port. The screw conveyor device of this application can reduce the residue of powder in the feeding cylinder, thereby making the output powder closer to the theoretical value and thus improving the quality of the slurry.

[0004] In the aforementioned literature, because preservative powder has strong hygroscopic properties, it easily absorbs moisture from the air during storage and transportation, leading to increased moisture content and easy agglomeration. Existing feeding mechanisms cannot dry and pulverize the damp and agglomerated powder, which can easily cause blockage of the feeding mechanism and affect the conveying efficiency. Therefore, a preservative powder spiral feeding device is proposed to address the above problems. Utility Model Content

[0005] To overcome the shortcomings of existing technologies, and addressing the problem that existing technologies cannot dry and pulverize powders that have become damp and clump together, which easily leads to blockage of the feeding mechanism and affects feeding efficiency, this utility model proposes a spiral feeding device for preservative powders.

[0006] The technical solution adopted by this utility model to solve its technical problem is: the preservative powder spiral feeding device of this utility model includes a base plate, a shell is fixed on the base plate by a bracket, a grinding component is provided inside the shell, a primary crushing component is provided through the top of the base plate, and the bottom end of the primary crushing component is connected to the grinding component.

[0007] The grinding assembly includes a filter cartridge fixed inside the housing. Multiple hollow grinding rods are slidably arranged on the inner wall of the filter cartridge. The side walls of the multiple hollow grinding rods that are in contact with the filter cartridge and are provided with arc edges facing the sliding direction. The hollow grinding rods are provided with evenly distributed No. 2 air outlet holes.

[0008] A feeding cylinder is fixed to the bottom of the housing, and a heating ring is fixed to the outer wall of the feeding cylinder. An inclined surface is provided at the connection between the housing and the feeding cylinder. Multiple triangular hollow tubes are fixed through the side of the housing, and the multiple triangular hollow tubes are distributed outside the filter cartridge. The triangular hollow tubes have evenly distributed No. 1 air outlets. A hot air blower is fixed to the outer wall of the housing, and the air outlet of the hot air blower is connected to the No. 2 air outlet and the multiple triangular hollow tubes.

[0009] Preferably, a hollow shaft is provided inside the filter cartridge and is colinear with it. The end of the hollow shaft passes through and is rotatably mounted on the outside of the housing. An end cap is rotatably mounted on the end of the hollow shaft located outside the feeding hopper, and the end cap is fixed on the outer wall of the housing. The air outlet of the hot air blower is connected to the end cap.

[0010] Preferably, a plurality of hollow connecting rods are fixedly connected between the hollow shaft and the plurality of hollow grinding rods, and the plurality of hollow connecting rods are also provided with evenly distributed second air outlet holes.

[0011] Preferably, the hollow shaft is fixedly connected to a drive shaft at its end inside the housing, the drive shaft is rotatably mounted through and on the outside of the housing, and a third pulley is fixedly connected to the end of the drive shaft on the outside of the housing.

[0012] Preferably, the primary crushing assembly includes a feeding bin that is fixed through the top of the housing, the bottom end of the filter cylinder is connected to the side curved surface of the filter cylinder, two crushing rollers are rotatably installed inside the feeding bin, one end of each of the two crushing rollers is disposed through the outside of the housing and is fixedly connected to a meshing gear, and a second motor is drivenly connected to the end of the rotation center shaft of one of the feeding bins, and the second motor is fixed to the outer wall of the feeding bin.

[0013] Preferably, two guide plates are symmetrically and inclinedly fixed on the inner wall of the feeding bin, and the inclined ends of the two guide plates face downwards and are directly opposite the meshing gap of the two crushing rollers. A closed cover plate is rotatably hinged at the top opening of the feeding bin.

[0014] Preferably, an auger is rotatably installed inside the feeding cylinder. The end of the auger's rotation center shaft passes through and is rotatably disposed outside the feeding cylinder. A first pulley is fixedly connected to the end of the auger's rotation center shaft outside the feeding cylinder. A first motor is fixed on the outer wall of the housing. A second pulley is fixedly connected to the end of the first motor. A second transmission belt and a first transmission belt are respectively configured to drive the second pulley, the first transmission belt, and the third transmission belt.

[0015] The advantages of this utility model are:

[0016] This invention uses two crushing rollers to perform primary crushing of the added preservative powder. When the hollow shaft rotates, it drives the hollow grinding rod to slide on the inner wall of the filter cylinder through the hollow connecting rod, so as to turn the preservative powder in the filter cylinder. During the turning process, the arc edge in the direction of rotation is used to grind the clumped preservative powder, which plays a secondary crushing role. At the same time, the preservative powder can be evenly heated and dried during the turning process. When the auger rotates, it will transport the powder that has entered into the filter cylinder, and the heating ring will reheat and dry it during the transport process. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the first three-dimensional structure in this embodiment;

[0019] Figure 2 This is an enlarged schematic diagram of the main shell structure in this embodiment;

[0020] Figure 3 This is an enlarged schematic diagram of the main structure of the grinding assembly in this embodiment;

[0021] Figure 4 This is a cross-sectional enlarged schematic diagram of the main structure of the grinding assembly in this embodiment;

[0022] Figure 5 This is an enlarged schematic diagram of area A in the cross-sectional view of the main structure of the grinding component in this embodiment;

[0023] Figure 6 This is an enlarged schematic diagram of area B in the cross-sectional view of the main structure of the grinding component in this embodiment.

[0024] In the diagram: 1. Base plate; 11. Support frame; 12. Shell; 13. Feed cylinder; 14. Hot air blower; 15. Triangular hollow tube; 16. Screwdriver; 17. Pulley No. 1; 18. Drive belt No. 1; 19. Pulley No. 2; 110. Air outlet No. 1; 111. Motor No. 1; 112. Drive belt No. 2; 113. Heating ring;

[0025] 2. Primary crushing assembly; 21. Feeding bin; 22. Crushing roller; 23. Gear; 24. Guide plate; 25. No. 2 motor;

[0026] 3. Grinding assembly; 31. Filter cartridge; 32. Hollow shaft; 33. Hollow connecting rod; 34. No. 2 air outlet; 35. Drive shaft; 36. No. 3 pulley; 37. Hollow grinding rod; 38. End cap. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0028] Please see Figure 1-6 As shown, a preservative powder spiral feeding device includes a base plate 1, on which a housing 12 is supported and fixed by a bracket 11. A grinding component 3 is disposed inside the housing 12. A primary crushing component 2 is disposed through the top of the base plate 1, and the bottom end of the primary crushing component 2 is connected to the grinding component 3.

[0029] The grinding assembly 3 includes a filter cylinder 31 fixed inside the housing 12. Multiple hollow grinding rods 37 are slidably arranged on the inner wall of the filter cylinder 31. The side walls of the multiple hollow grinding rods 37 that are in contact with the filter cylinder 31 and are provided with arc edges facing the sliding direction. The hollow grinding rods 37 are provided with evenly distributed second air outlet holes 34.

[0030] A feeding cylinder 13 is fixed to the bottom of the housing 12. A heating ring 113 is fixed to the outer wall of the feeding cylinder 13. An inclined surface is provided at the connection between the housing 12 and the feeding cylinder 13. Multiple triangular hollow tubes 15 are fixed through the side of the housing 12, and the multiple triangular hollow tubes 15 are distributed outside the filter cartridge 31. The triangular hollow tubes 15 are provided with uniformly distributed first air outlet holes 110. A hot air blower 14 is fixed to the outer wall of the housing 12. The air outlet of the hot air blower 14 is connected to the second air outlet hole 34 and the multiple triangular hollow tubes 15.

[0031] The filter cartridge 31 is provided with a hollow shaft 32 that is colinear with it. The end of the hollow shaft 32 passes through and is rotatably mounted on the outside of the housing 12. The end of the hollow shaft 32 located outside the feeding bin 21 is rotatably mounted with an end cover 38, and the end cover 38 is fixed on the outer wall of the housing 12. The air outlet of the hot air blower 14 is connected to the end cover 38.

[0032] Multiple hollow connecting rods 33 are fixedly connected between the hollow shaft 32 and multiple hollow grinding rods 37, and the multiple hollow connecting rods 33 are also provided with evenly distributed second air outlet holes 34.

[0033] The hollow shaft 32 is fixedly connected to a drive shaft 35 at its end inside the housing 12. The end of the drive shaft 35 passes through and is rotatably mounted on the outside of the housing 12. The end of the drive shaft 35 located on the outside of the housing 12 is fixedly connected to a third pulley 36.

[0034] The primary crushing assembly 2 includes a feeding bin 21 that is fixed through the top of the housing 12. The bottom end of the filter cylinder 31 is connected to the side curved surface of the filter cylinder 31. Two crushing rollers 22 are rotatably installed inside the feeding bin 21. One end of each of the two crushing rollers 22 is disposed through the outside of the housing 12 and is fixedly connected to a meshing gear 23. A second motor 25 is drivenly connected to the end of the rotation center shaft of one of the feeding bins 21, and the second motor 25 is fixed to the outer wall of the feeding bin 21.

[0035] Two guide plates 24 are symmetrically and inclinedly fixed on the inner wall of the feeding bin 21, and the inclined ends of the two guide plates 24 face downwards and are directly opposite the meshing gap of the two crushing rollers 22. A closed cover plate is rotatably hinged at the top opening of the feeding bin 21.

[0036] An auger 16 is rotatably installed inside the feeding cylinder 13. The end of the rotation center shaft of the auger 16 passes through and is rotatably positioned outside the feeding cylinder 13. A first pulley 17 is fixedly connected to the end of the rotation center shaft of the auger 16 outside the feeding cylinder 13. A first motor 111 is fixedly mounted on the outer wall of the housing 12. A second pulley 19 is fixedly connected to the end of the first motor 111. A second transmission belt 112 and a first transmission belt 18 are respectively arranged to drive the second pulley 19, the first transmission belt 18, and the third pulley 36.

[0037] During operation, the preservative powder is highly hygroscopic, easily absorbing moisture from the air during storage and transportation, leading to increased moisture content and clumping. Existing feeding mechanisms cannot dry and pulverize the damp and clumped powder, which can easily cause blockages and affect conveying efficiency. In this solution, the preservative powder is poured into the feed hopper 21 from the top. At this time, the second motor 25 is controlled to operate. When the second motor 25 operates, it drives one of the crushing rollers 22 to rotate, and the two gears... Under the meshing transmission action of 23, the inner sides of the two crushing rollers 22 rotate downwards simultaneously, thereby performing primary crushing of the input preservative powder to initially disperse the damp and agglomerated preservative powder. The preservative powder that has undergone primary crushing then enters the filter cartridge 31. This, combined with the operation of the hot air blower 14, allows hot air to be delivered into the housing 12 through the second air outlet 34 and the first air outlet 110, thus drying the damp preservative powder. This also controls the operation of the second drive belt 11. 2. During operation, the second drive belt 112 drives the third pulley 36 and the first pulley 17 to rotate, which in turn drives the auger 16 to rotate inside the feeding cylinder 13. This rotation, via the drive shaft 35, drives the hollow shaft 32 to rotate inside the filter cylinder 31. As the hollow shaft 32 rotates, it drives the hollow grinding rod 37 to slide on the inner wall of the filter cylinder 31 via the hollow connecting rod 33. This agitates the preservative powder inside the filter cylinder 31, and during the agitation, the arc-shaped edge of the grinding rod grinds the agglomerated preservative powder. It serves as a secondary crusher, and the tumbling process ensures that the preservative powder is heated and dried evenly. After grinding and drying, the preservative powder becomes less sticky and leaks out through the filter holes on the filter cylinder 31. Guided by the inclined surface at the bottom of the shell 12, it enters the feeding cylinder 13. When the auger 16 rotates, it conveys the powder that has entered the cylinder. During the conveying process, the heating ring 113 is heated by the control equipment to reheat and dry the powder, thereby ensuring the drying effect of the powder and the conveying efficiency of the powder.

[0038] It effectively conveys preservative powder and dries and pulverizes damp and clump-forming powder, thus preventing blockage of the conveying mechanism and ensuring conveying efficiency.

[0039] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A screw feeder for preservative powder, characterized in that: Includes a base plate (1), on which a housing (12) is fixed by a bracket (11), and a grinding assembly (3) is provided inside the housing (12). A primary crushing assembly (2) is provided through the top of the base plate (1), and the bottom end of the primary crushing assembly (2) is connected to the grinding assembly (3). The grinding assembly (3) includes a filter cylinder (31) fixed inside the housing (12). Multiple hollow grinding rods (37) are slidably arranged on the inner wall of the filter cylinder (31). The multiple hollow grinding rods (37) have arc edges that fit against the side wall of the filter cylinder (31) and face the sliding direction. The hollow grinding rods (37) are provided with evenly distributed second air outlet holes (34). A feeding cylinder (13) is fixed at the bottom of the housing (12). A heating ring (113) is fixed on the outer wall of the feeding cylinder (13). An inclined surface is provided at the connection between the housing (12) and the feeding cylinder (13). Multiple triangular hollow tubes (15) are fixed through the side of the housing (12). The multiple triangular hollow tubes (15) are distributed outside the filter cylinder (31). The triangular hollow tubes (15) are provided with uniformly distributed first air outlets (110). A hot air blower (14) is fixed on the outer wall of the housing (12). The air outlet of the hot air blower (14) is connected to the second air outlet (34) and the multiple triangular hollow tubes (15).

2. The preservative powder screw feeding device according to claim 1, characterized in that: The filter cartridge (31) is provided with a hollow shaft (32) that is colinear with it. The end of the hollow shaft (32) passes through and is rotatably installed on the outside of the housing (12). The end of the hollow shaft (32) located outside the feeding bin (21) is rotatably installed with an end cover (38), and the end cover (38) is fixed on the outer wall of the housing (12). The air outlet of the hot air blower (14) is connected to the end cover (38).

3. The preservative powder screw feeding device according to claim 2, characterized in that: Multiple hollow connecting rods (33) are fixedly connected between the hollow shaft (32) and multiple hollow grinding rods (37), and multiple hollow connecting rods (33) are also provided with evenly distributed second air outlet holes (34).

4. The preservative powder screw feeding device according to claim 2, characterized in that: The hollow shaft (32) is fixed to a drive shaft (35) at its end inside the housing (12). The drive shaft (35) is mounted through and rotatably on the outside of the housing (12). The drive shaft (35) is fixed to a third pulley (36) at its end outside the housing (12).

5. The preservative powder screw feeding device according to claim 1, characterized in that: The primary crushing assembly (2) includes a feeding bin (21) that is fixed through the top of the housing (12). The bottom end of the filter cylinder (31) is connected to the side curved surface of the filter cylinder (31). Two crushing rollers (22) are rotatably installed inside the feeding bin (21). One end of one of the two crushing rollers (22) is disposed through the outside of the housing (12) and is fixedly connected with a gear (23) that meshes with each other. A second motor (25) is connected to the end of the rotation center shaft of one of the feeding bins (21), and the second motor (25) is fixed on the outer wall of the feeding bin (21).

6. The preservative powder screw feeding device according to claim 5, characterized in that: Two guide plates (24) are symmetrically and inclinedly fixed on the inner wall of the feeding bin (21), and the inclined ends of the two guide plates (24) face downwards and are directly opposite the meshing gap of the two crushing rollers (22). A closed cover plate is rotatably hinged at the top opening of the feeding bin (21).

7. The preservative powder screw feeding device according to claim 1, characterized in that: An auger (16) is rotatably installed inside the feeding cylinder (13). The end of the rotation center shaft of the auger (16) passes through and is rotatably disposed outside the feeding cylinder (13). A first pulley (17) is fixedly connected to the end of the rotation center shaft of the auger (16) outside the feeding cylinder (13). A first motor (111) is fixed on the outer wall of the housing (12). A second pulley (19) is fixedly connected to the end of the first motor (111). The second pulley (19) is connected to the first transmission belt (18) and the third pulley (36) respectively by the second transmission belt (112) and the first transmission belt (18).

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