Vacuum freeze-drying and freshness-locking equipment for Chinese wolfberry fruits

Abstract

The utility model relates to the technical field of vacuum freeze drying, in particular to vacuum freeze drying wolfberry freshness locking equipment. The device comprises a drying box and a stirring cavity formed in the drying box, a motor is fixedly installed at the top of the drying box, the output end of the motor is connected with a rotating column, the rotating column is meshed with a first bevel gear and a second bevel gear simultaneously, the first bevel gear and the second bevel gear are coaxially connected to the two ends of the same stirring shaft, and the stirring shaft penetrates through the side wall of the stirring cavity; a plurality of groups of stirring blades are arranged at the shaft end, located in the stirring cavity, of the stirring shaft, a plug pin is fixed to the tail end of the stirring shaft, the plug pin is embedded into a groove in the side wall of the bearing sleeve, a coaxial threaded hole is formed in the coincident position of the plug pin and the groove of the bearing sleeve, and the plug pin and the groove of the bearing sleeve are locked and fixed through a quick release rod. The stirring cavity is quickly disassembled and assembled, and the problems that the stirring cavity in traditional equipment is fixedly connected and residues are difficult to thoroughly remove are solved, so that the cleaning thoroughness is improved, and the equipment maintenance downtime is greatly shortened.

Description

Technical Field

[0001] This utility model relates to the field of vacuum freeze-drying technology, specifically to a vacuum freeze-drying equipment for locking in the freshness of goji berries. Background Technology

[0002] Vacuum freeze dryers are suitable for drying high-grade raw materials, traditional Chinese medicine slices, biological materials, wild vegetables, dehydrated vegetables, food, fruits, chemicals, pharmaceutical intermediates, and other materials. Freeze-vacuum drying integrates a refrigeration system, a vacuum system, a heat transfer oil heating system, and a dehumidification system into a single unit, resulting in a new type of cabinet structure that maximizes the use of the space within the cabinet for drying materials.

[0003] Vacuum freeze dryers are frequently used in the production of dried goji berries. Vacuum freeze dryers can produce goji berries in a low-temperature vacuum environment. By using freeze-drying technology, the moisture in the goji berry pulp is sublimated without damaging the original material structure of the goji berries. This allows the freeze-dried goji berries to retain the complete skeleton and shape of the fresh fruit while maximizing the preservation of various nutrients in the goji berries.

[0004] Current vacuum freeze-drying equipment for black goji berries, due to its design, allows the rotating shaft to rotate only in one direction, reducing the effectiveness of stirring the berries. To address this, Chinese Patent Publication No. CN222639612U provides a vacuum device for freeze-drying black goji berries. This device uses the output shaft of a drive motor to rotate a rotating column. The arc-shaped teeth on the outer circumference of the rotating column contact a first bevel gear and a second bevel gear. During this contact, the stirring shaft rotates twice in opposite directions, facilitating the reciprocating motion of the stirring blades and ensuring thorough stirring of the black goji berries.

[0005] In the aforementioned vacuum freeze-drying equipment for preserving the freshness of goji berries, the mixing chamber is typically fixedly connected to the drying chamber. Because goji berry raw materials have a high sugar content and strong adhesiveness, residues easily accumulate in the dead corners of the mixing chamber after drying, requiring frequent machine shutdowns and manual cleaning of the entire chamber. This process is not only cumbersome and time-consuming, but also makes it difficult to completely eliminate microbial contamination sources, affecting the hygiene and safety of subsequent batches of products. Utility Model Content

[0006] This utility model provides a vacuum freeze-drying device for locking in the freshness of goji berries. It achieves rapid assembly and disassembly of the mixing chamber by providing quick-release rods with threaded grooves at the pin locations on both sides of the mixing shaft, thereby solving the problems mentioned in the background art.

[0007] In the prior art, the mixing chamber is usually fixedly connected to the drying chamber, which makes it difficult to disassemble and clean the mixing chamber and complicates the cleaning process.

[0008] To achieve the above objectives, the vacuum freeze-drying apparatus includes a drying chamber and a stirring chamber placed inside it. A motor is fixedly installed on the top of the drying chamber, and the output end of the motor is connected to a rotating column.

[0009] The rotating column simultaneously engages the first bevel gear and the second bevel gear;

[0010] The first bevel gear and the second bevel gear are coaxially connected at both ends of the same stirring shaft;

[0011] The stirring shaft penetrates the side wall of the stirring chamber, and the shaft section of the stirring shaft located in the stirring chamber is provided with multiple sets of stirring blades;

[0012] The stirring shaft end is fixed with a pin, which is embedded in a groove in the side wall of the bearing sleeve;

[0013] A coaxial threaded hole is provided at the overlap of the pin and the bearing sleeve groove, and it is locked and fixed by a quick release rod.

[0014] In the above technical solution, when the rotating column drives the coaxially connected first and second bevel gears to achieve forward and reverse rotation of the stirring shaft, the pin fixed at the end of the stirring shaft transmits torque by embedding it into the bearing sleeve groove; and the coaxial threaded hole at the point where the pin coincides with the bearing sleeve is locked by a quick-release rod, so that the pin can be slid out of the bearing sleeve groove simply by removing the quick-release rod, thereby pulling the entire stirring chamber along with the stirring shaft out of the drying box for cleaning, achieving rapid separation of the stirring chamber, and completely solving the problem of difficult cleaning of residual goji berry residue in the dead corner of the fixed chamber.

[0015] Based on this, the outside of the mixing chamber is provided with an openable and closable feed chamber door, and the side of the drying box is provided with an openable and closable sealing plate. When the sealing plate is fully opened, the mixing chamber is exposed. During use, the operator can open the sealing plate to disassemble the internal mixing chamber, add wolfberry raw materials by opening the feed chamber door, and remove the materials after drying.

[0016] In another technical solution, the arc-shaped teeth of the rotating column cover half of the arc surface of the rotating column. When the motor drives the rotating column to rotate, the half arc-shaped teeth alternately mesh with the first bevel gear and the second bevel gear, so that the entire stirring shaft rotates periodically in both directions, thereby achieving complete stirring of the goji berries.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] By making the mixing chamber detachable, and using pins and quick-release rods, the mixing chamber can be quickly disassembled and assembled, avoiding the problem of fixed connection of the mixing chamber in traditional equipment, which makes it difficult to completely remove residues. This significantly improves cleanliness, reduces the risk of microbial contamination, and greatly shortens equipment maintenance downtime, while ensuring that the core sealing performance of the drying process is not affected. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a partial structural schematic diagram of the present invention;

[0021] Figure 3 This is a cross-sectional structural diagram of the present invention;

[0022] Figure 4 This is a cross-sectional view of the stirring chamber structure of this utility model;

[0023] Figure 5 This is a schematic diagram of the quick-release lever of this utility model;

[0024] Figure 6 This is a schematic diagram of the structure at point A of this utility model.

[0025] The meanings of the labels in the diagram are as follows:

[0026] 100. Drying oven; 101. Motor; 102. Rotating column; 103. First bevel gear; 104. Second bevel gear; 105. Bearing sleeve; 106. Sealing plate;

[0027] 200. Mixing chamber; 201. Feed chamber door; 202. Mixing shaft; 203. Mixing blades; 204. Pin; 205. Quick release lever. Detailed Implementation

[0028] 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 protection scope of the present utility model.

[0029] Currently, in existing technologies, the stirring chamber 200 is typically fixedly connected to the drying chamber 100, making it difficult to disassemble and clean, and complicating the cleaning process. This invention provides a vacuum freeze-drying device for locking in the freshness of goji berries. (See [reference]). Figures 1-6 As shown, it includes a drying box 100 and a stirring chamber 200 placed inside it. A motor 101 is fixedly installed on the top of the drying box 100, and the output end of the motor 101 is connected to a rotating column 102.

[0030] The rotating column 102 simultaneously engages the first bevel gear 103 and the second bevel gear 104;

[0031] The first bevel gear 103 and the second bevel gear 104 are coaxially connected to both ends of the same stirring shaft 202;

[0032] The stirring shaft 202 penetrates the side wall of the stirring chamber 200, and the shaft section of the stirring shaft 202 located in the stirring chamber 200 is provided with multiple sets of stirring blades 203;

[0033] A fixing pin 204 is attached to the end of the stirring shaft 202, and the pin 204 is embedded in the groove of the side wall of the bearing sleeve 105;

[0034] A coaxial threaded hole is provided at the overlap of the pin 204 and the groove of the bearing sleeve 105, and it is locked and fixed by the quick release rod 205.

[0035] During operation, the goji berry raw material is added by opening the feed door 201 on one side of the mixing chamber 200. Then, the mixing chamber 200 is placed into the drying box 100 through the sealing plate 106. At the same time, the pins 204 at both ends of the mixing shaft 202 inside the mixing chamber 200 are engaged with the rectangular slots of the bearing sleeve 105. Then, the quick release rod 205 is installed in the coaxial threaded hole. By rotating the handle of the quick release rod 205 clockwise, the pins 204 are securely installed with the bearing sleeve 105. Finally, the handle of the quick release rod 205 is fastened to achieve complete fixation. In this solution, the structure of the quick release rod 205 is the same as that of the quick release rod 205 of the bicycle wheel hub in the prior art. The specific principle will not be described in detail.

[0036] See Figures 2-3 As shown, the mixing chamber 200 is provided with an openable and closable feed door 201 on the outside, and the drying box 100 is provided with an openable and closable sealing plate 106 on one side. When the sealing plate 106 is fully opened, the mixing chamber 200 is exposed. The sealing plate 106 achieves the sealing effect of the drying box 100 by cooperating with the sealing ring in the prior art. When opened, the opening range is larger than the mixing chamber 200. The operator can take out the internal mixing chamber 200 through the opening of the sealing plate 106 for cleaning.

[0037] Figures 5-6 In the middle, the pin 204 is a rectangular protrusion, and the groove of the bearing sleeve 105 is a matching rectangular groove. When the rectangular protrusion and the rectangular groove are engaged, they together form the cylindrical shape of the stirring shaft 202. At the same time, the elastic element provided at one end of the quick release rod 205 continuously squeezes the elastic element when the handle is rotated clockwise. In addition, its handle is a cam structure. When it is fastened, it can be fixed by the cam engaging with the groove, so as to avoid the quick release rod 205 from falling off due to vibration caused by rotation.

[0038] Figures 2-3In this design, the arc-shaped teeth of the rotating column 102 cover half of the arc surface of the rotating column 102. This design uses a half-fan arc-shaped tooth. When the motor 101 drives the rotating column 102 to rotate, its arc-shaped teeth rotate periodically, first driving the first bevel gear 103 to rotate clockwise. At this time, the stirring chamber 200 rotates clockwise when viewed from the cross section, and the stirring blades 203 stir the internal goji berries. When the rotating column 102 rotates to the toothless part, the stirring chamber 200 stops rotating. When it continues to rotate, its arc-shaped teeth contact the second bevel gear 104. At this time, the stirring chamber 200 rotates counterclockwise when viewed from the cross section, thus forming a periodic forward and reverse rotation as a whole, which fully stirs the internal goji berries.

[0039] Working principle: When in use, when the operator starts the motor 101 to drive the rotating column 102 to rotate, its semi-circular arc teeth alternately mesh with the first bevel gear 103 and the second bevel gear 104 at both ends of the same stirring shaft 202, so that the stirring shaft 202 periodically rotates forward and backward, driving the stirring blades 203 to tumble the wolfberry raw material in both directions to achieve uniform drying.

[0040] After drying, open the sealing plate 106 of the drying chamber 100, loosen the quick release rod 205 between the end pin 204 of the stirring shaft 202 and the bearing sleeve 105, and the pin 204 can be slid out from the rectangular groove of the bearing sleeve 105, so that the entire stirring chamber 200 and the stirring shaft 202 can be pulled out of the drying chamber 100 as a whole, thereby thoroughly cleaning the dead corners of the chamber and solving the cleaning problem of traditional fixed structures.

[0041] 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 preferred examples and are not intended to limit the 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. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A vacuum freeze-drying device for preserving the freshness of wolfberries, comprising a drying chamber (100) and a stirring chamber (200) disposed therein, characterized in that: A motor (101) is fixedly installed on the top of the drying oven (100), and the output end of the motor (101) is connected to a rotating column (102); The rotating column (102) simultaneously meshes with the first bevel gear (103) and the second bevel gear (104); The first bevel gear (103) and the second bevel gear (104) are coaxially connected to both ends of the same stirring shaft (202); The stirring shaft (202) penetrates the side wall of the stirring chamber (200), and the shaft section of the stirring shaft (202) located in the stirring chamber (200) is provided with multiple sets of stirring blades (203); The stirring shaft (202) is fixed with a pin (204) at its end, and the pin (204) is embedded in the groove of the side wall of the bearing sleeve (105); The pin (204) and the bearing sleeve (105) groove overlap at the point where they are connected by a coaxial threaded hole, and the pin is locked in place by a quick release rod (205).

2. The vacuum freeze-drying equipment for locking in freshness of wolfberries according to claim 1, characterized in that: The mixing chamber (200) is provided with an openable and closable feed door (201) on the outside.

3. The vacuum freeze-drying equipment for locking in freshness of wolfberries according to claim 1, characterized in that: The drying oven (100) has an openable sealing plate (106) on one side, which exposes the stirring chamber (200) when the sealing plate (106) is fully opened.

4. The vacuum freeze-drying equipment for locking in freshness of wolfberries according to claim 1, characterized in that: The pin (204) is a rectangular protrusion, and the groove of the bearing sleeve (105) is a matching rectangular groove.

5. The vacuum freeze-drying equipment for locking in freshness of wolfberries according to claim 1, characterized in that: The arc-shaped teeth of the rotating column (102) cover half of the arc surface of the rotating column (102).

6. The vacuum freeze-drying equipment for locking in freshness of wolfberries according to claim 5, characterized in that: When the arc-shaped teeth of the rotating column (102) rotate, they alternately mesh with the first bevel gear (103) and the second bevel gear (104), driving the stirring shaft (202) to periodically rotate in both directions.

7. The vacuum freeze-drying equipment for locking in freshness of wolfberries according to claim 1, characterized in that: The bearing sleeves (105) are symmetrically arranged on both sides of the inner wall of the drying oven (100), and each is connected to a pin (204).

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