Smashing and mixing device for dried stevioside material

Abstract

The utility model discloses a crushing and mixing device for dried stevioside materials, and relates to the technical field of stevioside production, blocky stevioside materials are crushed into small sizes in a crusher, enter a crushing surge bin and then enter a filter sieve under the suction force of a second vacuum feeding machine, and small-particle materials enter an undersize material surge bin for temporary storage; the stevioside enters the first feeding buffering bin under the action of the first vacuum feeding machine, then enters the second feeding buffering bin under the action of the third vacuum feeding machine and falls into the mixing machine below under the action of gravity, the uniformity of products is improved through secondary crushing and mixing of the mixing machine, and finally mixed stevioside materials enter the buffering tank to be temporarily stored and used for subsequent packaging and delivery. The whole process is operated in a closed mode, the possibility that stevioside dust enters air is greatly reduced, the device is friendly to the environment and the human body, meanwhile, continuous operation is achieved, production efficiency is improved, manual intervention is little, and productivity is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of stevioside production, in particular to a device for crushing and mixing stevioside materials after drying. Background Art

[0002] Stevioside, also known as stevioside, has a chemical formula of C 38 H 60 O 18 , is a glycoside extracted from the leaves of Stevia, a plant of the Asteraceae family. Stevia is native to Paraguay and Brazil. It has the characteristics of high sweetness and low caloric energy. Its sweetness is 200-300 times that of sucrose, and its calorific value is only 1 / 300 of that of sucrose.

[0003] The solid product obtained by spray drying stevia produced by corn soaking water is usually in block form and needs to be crushed before packaging. Stevia particles are brittle and fragile, and a large amount of dust is generated during the crushing process, causing great harm to the environment and personnel. In particular, most of the current crushing devices need to be frequently switched on and off to take and discharge materials. The amount of dust in the air at the operation site is particularly large, and the safety factor is poor. Summary of the invention

[0004] The technical problem to be solved by the utility model is: in view of the deficiencies in the prior art, a device for crushing and mixing stevioside materials after drying is provided, which greatly reduces the possibility of stevioside dust entering the air and has high safety.

[0005] In order to solve the above technical problems, the technical solution of the utility model is:

[0006] A device for crushing and mixing stevioside materials after drying, comprising a first vacuum feeder connected to a stevioside dry material feeding pipeline, wherein the discharge port of the first vacuum feeder is connected to a first feeding buffer bin through a pipeline, the outlet of the first feeding buffer bin is connected to a crusher through a pipeline, the outlet of the crusher is connected to a crushing buffer bin through a pipeline, the outlet of the crushing buffer bin is connected to a second vacuum feeder through a pipeline, the outlet of the second vacuum feeder is connected to a filter screen through a pipeline, and the outlet of the filter screen at the lower end of the screen is connected to a screened material buffer bin through a pipeline;

[0007] The outlet of the undersize material buffer bin is connected to the third vacuum loader through a pipeline, the outlet of the third vacuum loader is connected to the second feeding buffer bin through a pipeline, the outlet of the second feeding buffer bin is connected to a mixer through a pipeline, and the outlet of the mixer is connected to a cache tank through a pipeline.

[0008] As an improved technical solution, the stevioside dry material feeding pipeline is connected to an intermediate tank, and the outlet of the intermediate tank is connected to the first vacuum feeder through a pipeline.

[0009] As an improved technical solution, the crusher is a hammer crusher, and a plurality of cross-vertical blade crushing blade heads are provided along the axial direction of the rotating shaft.

[0010] As an improved technical solution, a plurality of serrated protrusions are provided on both sides of the cross-vertical plate crushing blade head.

[0011] As an improved technical solution, the filter screen is an air flow screen, and the upper outlet of the filter screen is connected to a screen material buffer bin through a pipeline, and the outlet of the screen material buffer bin is connected to the inlet of the first vacuum loader through a pipeline.

[0012] As an improved technical solution, the outlet of the mixer is connected to a suction hopper via a pipeline, and the outlet of the suction hopper is connected to the buffer tank via a pipeline.

[0013] As a preferred technical solution, the mixer is a horizontal paddle mixer, and the mixer is provided with a plurality of stirring paddles along the axial direction of the stirring shaft, and the stirring paddles include a plurality of stirring rods arranged circumferentially, and the free ends of the plurality of stirring rods are provided with stirring rake teeth.

[0014] As a preferred technical solution, four stirring rods are provided, and adjacent stirring rods are vertically arranged, wherein three stirring rake teeth are fixedly connected to the inner sides of the corresponding stirring rods, and the remaining stirring rake teeth are fixedly connected to the outer sides of the corresponding stirring rods.

[0015] Due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0016] The utility model discloses a device for crushing and mixing stevia materials after drying, comprising a first vacuum feeder connected with a feeding pipeline of the stevia dried materials, a discharge port of the first vacuum feeder connected with a first feeding buffer bin through a pipeline, an outlet of the first feeding buffer bin connected with a crusher through a pipeline, an outlet of the crusher connected with a crushing buffer bin through a pipeline, an outlet of the crushing buffer bin connected with a second vacuum feeder through a pipeline, an outlet of the second vacuum feeder connected with a filter screen through a pipeline, an outlet of the filter screen at the lower end of the screen mesh connected with a screen underflow buffer bin through a pipeline; an outlet of the screen underflow buffer bin connected with a third vacuum feeder through a pipeline, an outlet of the third vacuum feeder connected with a second feeding buffer bin through a pipeline, an outlet of the second feeding buffer bin connected with a mixer through a pipeline, and an outlet of the mixer connected with a buffer tank through a pipeline. The spray-dried stevia material enters the first feeding buffer bin under the negative pressure of the first vacuum feeder, and then enters the crusher under the action of gravity. The blocky stevia material is broken into small sizes and enters the crushing buffer bin, and then enters the filter screen under the suction of the second vacuum feeder. The small particles enter the undersize buffer bin for temporary storage, and then enter the second feeding buffer bin under the action of the third vacuum feeder, and fall into the mixer below under the action of gravity. The uniformity of the product is improved through the re-crushing and mixing of the mixer. Finally, the mixed stevia material enters the buffer tank for temporary storage for subsequent packaging and delivery. The whole process is closed operation, which greatly reduces the possibility of stevia dust entering the air, is friendly to the environment and human body, and realizes continuous operation, improves production efficiency, reduces manual intervention, and saves productivity.

[0017] The stevioside dry material feed pipeline is connected to an intermediate tank, and the outlet of the intermediate tank is connected to the first vacuum feeder through a pipeline. The dried stevioside material is temporarily stored in the intermediate tank, which increases the inclusiveness of the overall process. When the back-end equipment such as crushing and mixing needs to be repaired, the drying process can be ensured to proceed normally, and the equipment has a stronger anti-interference ability.

[0018] The crusher is a hammer crusher, and a plurality of cross-vertical blade crushing heads are arranged along the axial direction of the rotating shaft. The crushing effect of the hammer crusher is better, and the production capacity of the product is improved. At the same time, the cross-vertical blade crushing head is light in weight and fast in rotation, and less dust is generated during the crushing process, which reduces the possibility of dust escape.

[0019] Both sides of the cross-shaped vertical plate crushing blade are provided with a plurality of sawtooth-shaped protrusions, which have a better crushing effect on block materials and improve the crushing efficiency.

[0020] The filter screen is an airflow screen, and the upper outlet of the filter screen is connected to the screen material buffer bin through a pipeline, and the outlet of the screen material buffer bin is connected to the inlet of the first vacuum feeder through a pipeline. Compared with the commonly used vibrating screen, the airflow screen has a better sealing effect, and the possibility of material dust escaping into the air is small. In addition, by sucking the larger stevia material into the first vacuum feeder again and crushing it, the difficulty of subsequent processing is reduced.

[0021] The outlet of the mixer is connected to a suction hopper through a pipeline, and the outlet of the suction hopper is connected to the buffer tank through a pipeline. The mixed stevia material is temporarily stored in the suction hopper, and a manhole sight glass is arranged on the suction hopper to observe the particle size and uniformity of the material in the suction hopper. If unqualified materials are found, they are reworked in time to avoid entering the buffer tank and subsequent packaging, which increases the difficulty of processing.

[0022] The mixer is a horizontal paddle mixer, wherein a plurality of stirring paddles are arranged along the axial direction of the stirring shaft, wherein the stirring paddles include a plurality of stirring rods arranged circumferentially, and a plurality of stirring rods are provided with stirring rake teeth at their free ends. The horizontal paddle mixer has a fast mixing speed and improves the mixing efficiency. In addition, the structure of the plurality of stirring rake teeth increases the contact area with the material, and the mixing effect is better.

[0023] There are four stirring rods, and the adjacent stirring rods are arranged vertically, wherein three stirring rake teeth are fixedly connected to the inner side of the corresponding stirring rods, and the remaining stirring rake teeth are fixedly connected to the outer side of the corresponding stirring rods. The stirring rake teeth arranged in different directions continuously turn the materials during the mixing process, so that the mixing uniformity of the materials is better and the stirring dead angle is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0025] Figure 1 It is a structural schematic diagram of an embodiment of the utility model;

[0026] Figure 2 yes Figure 1 Schematic diagram of the internal structure of the medium crusher;

[0027] Figure 3 yes Figure 1 Schematic diagram of the internal structure of the medium mixer;

[0028] Among them: 1. Stevia dry material feeding pipeline; 2. First vacuum feeder; 3. First feeding buffer bin; 4. Crusher; 5. Crushing buffer bin; 6. Second vacuum feeder; 7. Filter screen; 8. Screen under buffer bin; 9. Third vacuum feeder; 10. Second feeding buffer bin; 11. Mixer; 12. Buffer tank; 13. Intermediate tank; 14. Cross vertical plate crushing blade; 15. Serrated protrusion; 16. Screen over buffer bin; 17. Suction hopper; 18. Stirring rod; 19. Stirring rake teeth. DETAILED DESCRIPTION

[0029] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0030] like Figure 1-3 As shown, a device for crushing and mixing stevia materials after drying comprises a first vacuum feeder 2 connected to a stevia dry material feeding pipeline 1, the discharge port of the first vacuum feeder 2 is connected to a first feeding buffer bin 3 through a pipeline, the outlet of the first feeding buffer bin 3 is connected to a pulverizer 4 through a pipeline, the outlet of the pulverizer 4 is connected to a crushing buffer bin 5 through a pipeline, the outlet of the crushing buffer bin 5 is connected to a second vacuum feeder 6 through a pipeline, the outlet of the second vacuum feeder 6 is connected to a filter screen 7 through a pipeline, the outlet of the filter screen 7 is connected to a screen buffer bin 8 through a pipeline; the outlet of the screen buffer bin 8 is connected to a third vacuum feeder 9 through a pipeline, the outlet of the third vacuum feeder 9 is connected to a second feeding buffer bin 10 through a pipeline, the outlet of the second feeding buffer bin 10 is connected to a mixer 11 through a pipeline, and the outlet of the mixer 11 is connected to a cache tank 12 through a pipeline. The spray-dried stevioside material enters the first feeding buffer bin 3 under the negative pressure of the first vacuum feeder 2, and then enters the crusher 4 under the action of gravity. The blocky stevioside material is broken into small sizes and enters the crushing buffer bin 5, and then enters the filter screen 7 under the suction of the second vacuum feeder 6. The small particles enter the undersize buffer bin 8 for temporary storage, and then enter the second feeding buffer bin 10 under the action of the third vacuum feeder 9, and fall into the mixer 11 below under the action of gravity. The uniformity of the product is improved by the re-crushing and mixing of the mixer 11. Finally, the mixed stevioside material enters the buffer tank for temporary storage for subsequent packaging and delivery. The whole process is closed operation, which greatly reduces the possibility of stevioside dust entering the air, is friendly to the environment and human body, and at the same time realizes continuous operation, improves production efficiency, reduces manual intervention, and saves productivity.

[0031] The stevioside dry material feed pipeline 1 is connected to an intermediate tank 13, and the outlet of the intermediate tank 13 is connected to the first vacuum feeder 2 through a pipeline. The dried stevioside material is temporarily stored in the intermediate tank 13, which increases the inclusiveness of the overall process. When the back-end equipment such as crushing and mixing needs to be repaired, the drying process can be ensured to proceed normally, and the anti-interference ability of the equipment is stronger. For ease of use, multiple intermediate tanks 13 and cache tanks 12 are provided, which can be switched according to production conditions.

[0032] The crusher 4 is a hammer crusher 4, and a plurality of cross-vertical blade crushing heads 14 are provided along the axial direction of the rotating shaft. The crushing effect of the hammer crusher 4 is better, and the production capacity of the product is improved. At the same time, the cross-vertical blade crushing heads 14 are light in weight and fast in rotation. Less dust is generated during the crushing process, which reduces the possibility of dust escape.

[0033] A plurality of sawtooth-shaped protrusions 15 are provided on both sides of the cross-shaped vertical blade crushing blade head 14. The sawtooth-shaped protrusions 15 have a better crushing effect on block materials, thereby improving the crushing efficiency.

[0034] The filter screen 7 is an airflow screen, and the outlet of the filter screen 7 is connected to the screen material buffer bin 16 through a pipeline, and the outlet of the screen material buffer bin 16 is connected to the inlet of the first vacuum feeder 2 through a pipeline. Compared with the commonly used vibrating screen, the airflow screen has a better sealing effect, and the possibility of material dust escaping into the air is small. In addition, by sucking the larger stevia material into the first vacuum feeder 2 again and crushing it, the difficulty of subsequent processing is reduced.

[0035] The outlet of the mixer 11 is connected to a suction hopper 17 through a pipeline, and the outlet of the suction hopper 17 is connected to the buffer tank 12 through a pipeline. The mixed stevioside material is temporarily stored through the suction hopper 17, and a manhole sight glass is provided on the suction hopper 17 to observe the particle size and uniformity of the material in the suction hopper 17. If unqualified materials are found, they are reworked in time to avoid entering the buffer tank 12 and subsequent packaging, which increases the difficulty of processing.

[0036] The mixer 11 is a horizontal paddle mixer 11, and the mixer 11 is provided with a plurality of stirring paddles along the axial direction of the stirring shaft, and the stirring paddles include a plurality of stirring rods 18 arranged circumferentially, and a plurality of stirring rake teeth 19 are provided at the free ends of the stirring rods 18. The horizontal paddle mixer 11 has a fast mixing speed, and improves the mixing efficiency. In addition, the structure of the plurality of stirring rake teeth 19 increases the contact area with the material, and the mixing effect is better.

[0037] There are four stirring rods 18, and adjacent stirring rods 18 are arranged vertically, wherein three stirring rake teeth 19 are fixedly connected to the inner side of the corresponding stirring rods 18, and the remaining stirring rake teeth 19 are fixedly connected to the outer side of the corresponding stirring rods 18. The stirring rake teeth 19 arranged in different directions continuously turn the materials during the mixing process, so that the mixing uniformity of the materials is better and the stirring dead angle is reduced.

[0038] It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the claims attached to this application.

Claims

1. A device for crushing and mixing stevioside materials after drying, characterized in that: The invention comprises a first vacuum feeder connected to a stevioside dry material feeding pipeline, wherein the discharge port of the first vacuum feeder is connected to a first feeding buffer bin through a pipeline, the outlet of the first feeding buffer bin is connected to a pulverizer through a pipeline, the outlet of the pulverizer is connected to a pulverizing buffer bin through a pipeline, the outlet of the pulverizing buffer bin is connected to a second vacuum feeder through a pipeline, the outlet of the second vacuum feeder is connected to a filter screen through a pipeline, and the outlet of the filter screen at the lower end is connected to a screen buffer bin through a pipeline; The outlet of the undersize material buffer bin is connected to the third vacuum loader through a pipeline, the outlet of the third vacuum loader is connected to the second feeding buffer bin through a pipeline, the outlet of the second feeding buffer bin is connected to a mixer through a pipeline, and the outlet of the mixer is connected to a cache tank through a pipeline.

2. A device for crushing and mixing stevia materials after drying as claimed in claim 1, characterized in that: The stevioside dry material feeding pipeline is connected to an intermediate tank, and the outlet of the intermediate tank is connected to the first vacuum feeder through a pipeline.

3. The device for crushing and mixing stevia materials after drying according to claim 1, characterized in that: The crusher is a hammer crusher, and a plurality of cross-shaped vertical plate crushing blade heads are arranged along the axial direction of the rotating shaft.

4. A device for crushing and mixing stevia materials after drying as claimed in claim 3, characterized in that: A plurality of sawtooth-shaped protrusions are arranged on both sides of the cross-shaped vertical plate crushing blade head.

5. The device for crushing and mixing stevia materials after drying according to claim 1, characterized in that: The filter screen is an air flow screen, and the upper outlet of the filter screen is connected to a screen material buffer bin through a pipeline, and the outlet of the screen material buffer bin is connected to the inlet of the first vacuum feeder through a pipeline.

6. The device for crushing and mixing stevia materials after drying according to claim 1, characterized in that: The outlet of the mixer is connected to a suction hopper through a pipeline, and the outlet of the suction hopper is connected to the buffer tank through a pipeline.

7. The device for crushing and mixing stevia materials after drying according to claim 1, characterized in that: The mixer is a horizontal paddle mixer, and a plurality of stirring paddles are arranged along the axial direction of the stirring shaft. The stirring paddles include a plurality of stirring rods arranged circumferentially, and stirring rake teeth are arranged at the free ends of the plurality of stirring rods.

8. The device for crushing and mixing stevioside materials after drying according to claim 7, characterized in that: There are four stirring rods, and the adjacent stirring rods are vertically arranged, wherein three stirring rake teeth are fixedly connected to the inner sides of the corresponding stirring rods, and the remaining stirring rake teeth are fixedly connected to the outer sides of the corresponding stirring rods.

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