Anti-blocking pulverizing device for production of freeze-dried fruit and vegetable powder

Abstract

The application relates to a kind of anti-blocking crushing devices for freeze-dried fruit and vegetable powder production, relating to the field of food processing machinery, including crushing cylinder, which is provided with feed inlet and discharge outlet, and screen is horizontally installed in the crushing cylinder, the upper part of the screen is provided with a scraper with bristles, the center of the scraper is connected with driving shaft, the driving shaft is driven to rotate by the driving motor at the top of the crushing cylinder, which drives the scraper to reciprocate on the upper surface of the screen, and the bristles continuously clean the screen aperture to prevent fruit and vegetable powder from blocking. The inner wall of the crushing cylinder is provided with an annular limiting groove, and the limiting rods at both ends of the scraper are embedded therein to ensure stable operation of the scraper. The device is also provided with a detachable arc-shaped disconnection plate to facilitate installation and cleaning of the screen. The application realizes automatic cleaning of the screen through a mechanical linkage structure, effectively avoids screen blocking, improves crushing efficiency and continuous production capacity, and is suitable for fine crushing of high-humidity fruit and vegetable raw materials.

Description

Technical Field

[0001] This utility model relates to the field of food processing machinery, and in particular to an anti-clogging pulverizing device for the production of freeze-dried fruit and vegetable powder. Background Technology

[0002] Freeze-dried fruit and vegetable powder is a powdered product obtained by freeze-drying fresh fruits and vegetables and then ultra-finely pulverizing them. It has advantages such as high nutrient retention, good solubility, and easy storage and transportation, and is widely used in health products, infant food, baking, and seasonings. In the production process of freeze-dried fruit and vegetable powder, pulverization is one of the key steps, and its effect directly affects the particle size distribution, flowability, and subsequent application performance of the product.

[0003] In actual production, freeze-dried fruits and vegetables still contain trace amounts of moisture and have a loose, porous structure, making them prone to fine powder adhesion and agglomeration during the pulverizing process. This leads to clogging of the screen pores inside the pulverizer, severely impacting pulverizing efficiency and continuous production capacity. Currently, most common pulverizing equipment uses fixed screens in conjunction with high-speed rotating blades. When the screen becomes clogged, the machine must be stopped for manual cleaning, which is not only cumbersome but also poses a risk of dust explosion, affecting production safety and efficiency.

[0004] Although some equipment has attempted to incorporate vibrating screens or airflow-assisted screen cleaning technology, the vibrating structures are complex, energy-intensive, and require strict equipment sealing; airflow cleaning, on the other hand, may introduce moisture, causing the product to absorb moisture and clump. Furthermore, existing equipment generally presents inconvenience in screen replacement and maintenance, making rapid disassembly and thorough cleaning difficult, which is detrimental to multi-product rotation production. Therefore, how to effectively prevent screen clogging while ensuring pulverization efficiency and achieving convenient maintenance has become a pressing technical challenge in this field. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides an anti-clogging pulverizing device for the production of freeze-dried fruit and vegetable powder.

[0006] This utility model provides an anti-clogging pulverizing device for the production of freeze-dried fruit and vegetable powder, which adopts the following technical solution:

[0007] A clog-resistant pulverizing device for producing freeze-dried fruit and vegetable powder includes a pulverizing cylinder. A feed inlet is located on one side of the pulverizing cylinder, and a discharge outlet is located at the bottom of the pulverizing cylinder. A screen is installed inside the pulverizing cylinder and is horizontally positioned. A scraper is located directly above the screen, and the scraper has evenly distributed bristles for cleaning the screen. A drive motor is located on the upper surface of the pulverizing cylinder. The output shaft of the drive motor passes through the pulverizing cylinder and is coaxially and fixedly connected to a drive shaft. The drive shaft is fixedly connected to the center of the scraper.

[0008] Preferably, the end of the drive shaft away from the scraper is provided with a plurality of fan blades, and the horizontal plane of the fan blades is higher than the horizontal plane of the feed inlet.

[0009] Preferably, a limiting groove is formed on the inner wall of the crushing cylinder, the limiting groove is arranged circumferentially, and both ends of the scraper are fixedly connected to limiting rods, which are located at the limiting grooves.

[0010] Preferably, a disassembly interface is provided on one side of the crushing cylinder, and a disassembly plate is installed at the disassembly interface of the crushing cylinder. The disassembly plate is an arc-shaped plate, and movable grooves are provided on both sides of the disassembly plate. Two snap-fit ​​plates are provided in the movable grooves, and the two snap-fit ​​plates are connected by a connecting spring. The disassembly interface of the crushing cylinder is connected to a snap-fit ​​groove. When the disassembly plate is located at the disassembly interface, the snap-fit ​​plate is located at the snap-fit ​​groove.

[0011] Preferably, a sliding plate is fixedly connected to one end of the snap-fit ​​plate near the connecting spring, and a sliding groove is provided on the disassembly plate. The sliding groove extends along the width direction of the disassembly plate, and the sliding plate is located at the sliding groove, and the sliding plate is slidably connected to the disassembly plate.

[0012] Preferably, the inner wall of the crushing cylinder has two slots, which are respectively set on the disassembly plate and the crushing cylinder. A locking block is fixedly connected to the screen, and when the screen is inside the crushing cylinder, the locking block is located in the slot.

[0013] In summary, this utility model has at least one of the following beneficial technical effects:

[0014] 1. By using a rotating scraper in conjunction with brushes to clean the screen in real time, the accumulation and clogging of fruit and vegetable powder on the screen surface is effectively prevented, significantly improving the continuity and stability of the crushing process;

[0015] 2. By adopting a detachable arc-shaped disassembly plate and elastic snap-fit ​​structure, the screen can be quickly installed and disassembled without tools, greatly improving the maintainability and production efficiency of the equipment. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of an anti-clogging pulverizing device for the production of freeze-dried fruit and vegetable powder.

[0017] Figure 2 This is a cross-sectional structural diagram of an anti-clogging pulverizing device for the production of freeze-dried fruit and vegetable powder.

[0018] Figure 3 This is a schematic diagram of the overall structure of an anti-clogging pulverizing device for the production of freeze-dried fruit and vegetable powder after removing the pulverizing cylinder.

[0019] Explanation of reference numerals in the attached drawings: 1. Crushing cylinder; 11. Feed inlet; 12. Discharge outlet; 13. Screen; 14. Scraper; 15. Brush bristles; 16. Drive shaft; 17. Drive motor; 18. Limiting groove; 19. Limiting rod; 2. Disassembly interface; 21. Disassembly plate; 22. Clip plate; 23. Clip groove; 24. Connecting spring; 25. Sliding groove; 26. Clip block. Detailed Implementation

[0020] The present invention will be further described in detail below with reference to all the accompanying drawings.

[0021] This utility model discloses an anti-clogging pulverizing device for the production of freeze-dried fruit and vegetable powder.

[0022] Reference Figure 1 , Figure 2 and Figure 3 A clog-resistant pulverizing device for producing freeze-dried fruit and vegetable powder includes a vertically arranged cylindrical pulverizing cylinder 1. A feed inlet 11 is located on the upper part of one side of the pulverizing cylinder 1, and a discharge outlet 12 is located at the center of the bottom end. A circular screen 13 is horizontally installed inside the pulverizing cylinder 1, with the edge of the screen 13 fitting against the inner wall of the cylinder.

[0023] Reference Figure 1 , Figure 2 and Figure 3 A scraper 14 is positioned directly above the screen 13. Nylon bristles 15 are evenly distributed on the surface of the scraper 14, with the lower ends of the bristles 15 making slight contact with the upper surface of the screen 13. The center of the scraper 14 is coaxially and fixedly connected to the output shaft of the drive motor 17 at the top of the crushing cylinder 1 via a drive shaft 16. The speed of the drive motor 17 is controlled by a PLC controller. The drive shaft 16 extends above the scraper 14, and a fan blade is fixedly connected to its top end. The plane of the fan blade is higher than the feed inlet 11.

[0024] Reference Figure 1 , Figure 2 and Figure 3 The inner wall of the crushing cylinder 1 is provided with an annular limiting groove 18. The limiting rods 19 at both ends of the scraper 14 are inserted into the limiting groove 18 to ensure that the scraper 14 rotates smoothly. The side wall of the crushing cylinder 1 is also provided with an arc-shaped disassembly interface 2. An arc-shaped disassembly plate 21 is installed at the disassembly interface 2. Two locking plates 22 are provided in the movable grooves on both sides of the disassembly plate 21. The two locking plates 22 are connected by a connecting spring 24. The corresponding position of the disassembly interface 2 of the crushing cylinder 1 is provided with a locking groove. When the disassembly plate 21 is installed in place, the locking plate 22 is locked into the locking groove. The disassembly plate 21 is provided with a sliding groove 25. The locking plate 22 slides in cooperation with the sliding groove 25 through a sliding plate. The edge of the screen 13 is provided with a locking block 26. The inner wall of the crushing cylinder 1 and the disassembly plate 21 are provided with corresponding locking grooves 23. When the screen 13 is installed, the locking block 26 is embedded into the locking groove 23 to achieve positioning and fixation.

[0025] The implementation principle of the anti-clogging pulverizing device for freeze-dried fruit and vegetable powder production according to this utility model embodiment is as follows: During operation, freeze-dried fruit and vegetable particles enter the pulverizing cylinder 1 through the feed inlet 11. After being initially pulverized by the internal blades, they fall above the screen 13. The drive motor 17 starts, driving the drive shaft 16 to rotate, which in turn drives the scraper 14 to make a circular motion above the screen 13. The bristles 15 on the scraper continuously sweep across the surface of the screen 13, pushing the adhering fine powder into the screen holes or scraping it to the edge to prevent clogging. The fan blades rotate synchronously with the drive shaft 16, generating an airflow from top to bottom, which helps the material move downward and cools the inside of the equipment. When it is necessary to clean or replace the screen 13, the sliding plate is manually pushed to disengage the locking plate 22 from the locking groove, and the disassembly plate 21 can be removed. Then, the screen 13 can be taken out for maintenance. The operation is simple and quick.

[0026] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A clog-resistant pulverizing device for producing freeze-dried fruit and vegetable powder, comprising a pulverizing cylinder (1), characterized in that, The crushing cylinder (1) has a feed inlet (11) on one side and a discharge outlet (12) at the bottom. A screen (13) is installed inside the crushing cylinder (1). The screen (13) is horizontally arranged. A scraper (14) is provided directly above the screen (13). Brush bristles (15) are evenly provided on the scraper (14) for cleaning the screen (13). A drive motor (17) is provided on the upper end face of the crushing cylinder (1). The output shaft of the drive motor (17) passes through the crushing cylinder (1) and is coaxially fixedly connected to a drive shaft (16). The drive shaft (16) is fixedly connected to the center of the scraper (14).

2. The anti-clogging pulverizing device for freeze-dried fruit and vegetable powder production according to claim 1, characterized in that, The drive shaft (16) has several fan blades at one end away from the scraper (14), and the horizontal plane of the fan blades is higher than the horizontal plane of the feed inlet (11).

3. The anti-clogging pulverizing device for freeze-dried fruit and vegetable powder production according to claim 1, characterized in that, The inner wall of the crushing cylinder (1) is provided with a limiting groove (18), which is arranged circumferentially. Both ends of the scraper (14) are fixedly connected with limiting rods (19), which are located at the limiting groove (18).

4. The anti-clogging pulverizing device for freeze-dried fruit and vegetable powder production according to claim 1, characterized in that, The crushing cylinder (1) has a disassembly interface (2) on one side. A disassembly plate (21) is installed at the disassembly interface (2) of the crushing cylinder (1). The disassembly plate (21) is an arc-shaped plate. Movable grooves are provided on both sides of the disassembly plate (21). Two snap-fit ​​plates (22) are provided in the movable grooves. The two snap-fit ​​plates (22) are connected by a connecting spring (24). The disassembly interface (2) of the crushing cylinder (1) is connected to a snap-fit ​​groove. When the disassembly plate (21) is located at the disassembly interface (2), the snap-fit ​​plate (22) is located at the snap-fit ​​groove.

5. The anti-clogging pulverizing device for freeze-dried fruit and vegetable powder production according to claim 4, characterized in that, The snap-fit ​​plate (22) is fixedly connected to a sliding plate at one end near the connecting spring (24). The disassembly plate (21) is provided with a sliding groove (25). The sliding groove (25) extends along the width direction of the disassembly plate (21). The sliding plate is located at the sliding groove (25) and is slidably connected to the disassembly plate (21).

6. The anti-clogging pulverizing device for freeze-dried fruit and vegetable powder production according to claim 1, characterized in that, The inner wall of the crushing cylinder (1) is provided with two slots (23). The two slots (23) are respectively set on the disassembly plate (21) and the crushing cylinder (1). A locking block (26) is fixedly connected to the screen (13). When the screen (13) is inside the crushing cylinder (1), the locking block (26) is located in the slot (23).

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