Vacuum freeze-drying equipment for low-GI freeze-dried tremella aurantialba crisp chips

Abstract

The invention is applicable to the technical field of food processing, and provides vacuum freeze-drying equipment for low-GI freeze-dried tremella aurantialba crisp chips, which comprises a box body, the motor is assembled in the box body, a disc is fixed to the output end of the motor, and an inclined block is fixedly connected to the top of the disc. According to the vacuum freeze-drying equipment for the low-GI freeze-dried tremella aurantialba crisp chips, the motor is used for driving the disc, under traction of the inclined block and the supporting rod, the fixing table can be driven to swing, acting force generated by the fixing table can drive tremella aurantialba in the food-grade plastic woven barrel to topple and roll continuously, the drying uniformity and efficiency of the tremella aurantialba are guaranteed, and the drying quality of the tremella aurantialba is improved. And meanwhile, the tremella aurantialba is prevented from caking or adhering to the wall, the moving track of the fixing table can be limited through mutual cooperation of an arc-shaped frame, an arc-shaped sliding block, a sleeve and a connecting rod, fan blades are driven to rotate through a transmission assembly under driving of a motor, cold air can be guided to be blown to the food-grade plastic woven barrel, and the drying effect of the tremella aurantialba is improved.

Description

Technical Field

[0001] This invention belongs to the field of food processing technology, and in particular relates to a vacuum freeze-drying device for low-GI freeze-dried golden ear fungus crisps. Background Technology

[0002] Low-GI freeze-dried golden ear fungus crisps are a low-GI snack made from golden ear fungus. They have a crispy texture and are considered healthy. They are digested slowly and have a gradual rise in blood sugar, which helps control blood sugar and increase satiety. They are very suitable for diabetics and people who pursue a healthy diet. Freeze-drying technology is a process that preserves the nutrients in food through low-temperature freezing and vacuum dehydration. It can retain the color, aroma, taste and nutrients of the ingredients to the greatest extent. Vacuum freeze-drying equipment is an advanced drying equipment that removes moisture from materials through the principle of sublimation. Its core workflow includes three stages: pre-freezing, sublimation drying and desorption drying.

[0003] A search revealed an existing technology (publication number: CN222165484U) for a low-energy-consumption low-temperature vacuum freeze-drying device. The technology describes a device that "includes a shell, a drying chamber installed on the front side of the shell, a working chamber installed on the front side of the shell, and a protective assembly installed on the right side of the shell and inside the working chamber; the protective assembly includes a mounting plate, screws, drive wheels, a cleaning plate, an exhaust port, a dustproof net, a mounting frame, and a semiconductor cooler; the right side of the shell has a mounting plate with two screws connected to its top, each screw having a drive wheel mounted on its top; a cleaning plate is connected to the outer surface of the two screws; an exhaust port is located between the inner right wall of the working chamber and the right side of the shell, and a dustproof net is installed inside the exhaust port." However, this existing technology does not allow for material turning during vacuum freeze-drying, which can easily lead to uneven drying and low drying efficiency, affecting the quality of the processed material. Therefore, designing a vacuum freeze-drying device for low-GI freeze-dried golden ear crisps is essential. Summary of the Invention

[0004] This invention provides a vacuum freeze-drying device for low-GI freeze-dried golden ear fungus chips, aiming to solve the problem that in the existing technology, the material cannot be turned over during the vacuum freeze-drying process, which easily leads to uneven drying and low drying efficiency, thus affecting the quality of material processing.

[0005] This invention is implemented as follows: a vacuum freeze-drying device for low-GI freeze-dried golden ear fungus chips includes a housing; a motor assembled inside the housing, with a disc fixed to the output end of the motor, an inclined block fixedly connected to the top of the disc, and a support rod connected to the top of the inclined block via a shaft; a fixed platform fixedly connected to the end of the support rod away from the inclined block, with an food-grade plastic woven bucket placed on the fixed platform; an arc-shaped frame fixedly connected inside the housing, with an arc-shaped slider slidably mounted on the arc-shaped frame; a sleeve fixedly connected to the outer wall of the support rod, with a connecting rod inserted into the inside of the sleeve, and one end of the connecting rod fixedly connected to the arc-shaped slider; and a transmission assembly fixedly mounted at the output end of the motor, with fan blades detachably mounted on the transmission assembly.

[0006] Preferably, the transmission assembly includes a first synchronous pulley, a second synchronous pulley, a first synchronous belt, a transmission rod, a third synchronous pulley, a support, a fourth synchronous pulley, a second synchronous belt, a fifth synchronous pulley, a sixth synchronous pulley, a third synchronous belt, and a linkage rod. The first synchronous pulley is fixedly connected to the output end of the motor. The second synchronous pulley is connected to the inside of the housing via a shaft, and a first synchronous belt is sleeved between the second synchronous pulley and the first synchronous pulley. A transmission rod is fixedly connected to the second synchronous pulley, and a third synchronous pulley is fixedly connected to the end of the transmission rod away from the second synchronous pulley. A support is fixedly connected to the inside of the housing, and a fourth synchronous pulley is connected to the support via a shaft. A second synchronous belt is sleeved between the fourth synchronous pulley and the second synchronous belt. A fifth synchronous pulley is fixedly connected to the bottom of the fourth synchronous pulley. A sixth synchronous pulley is connected to the support via a shaft, and a third synchronous belt is sleeved between the sixth synchronous pulley and the fifth synchronous pulley. A linkage rod is fixedly connected to the bottom of the sixth synchronous pulley, and the fan blade is mounted on the linkage rod.

[0007] Preferably, the third synchronous pulley is larger than the fourth synchronous pulley, the fifth synchronous pulley is larger than the third synchronous pulley, the fourth synchronous pulley is larger than the sixth synchronous pulley, a limiting ring is sleeved on the transmission rod, and the other end of the limiting ring is fixedly connected to the inner wall of the housing. A pair of limiting plates are fixed on the transmission rod, and the two limiting plates are located at the top and bottom of the limiting ring, respectively.

[0008] Preferably, the electric heating tube is installed at the bottom of the fixed platform, and the bottom of the fixed platform is provided with several ventilation holes at equal intervals. The inner wall of the fixed platform is made of rubber material, and the food-grade plastic woven bucket is designed to fit snugly against the inner wall of the fixed platform.

[0009] Preferably, the top of the food-grade plastic woven bucket is hinged with a perforated plate, the fan blade is located above the top of the food-grade plastic woven bucket, and the inner contour of the sleeve is larger than the outer contour of the connecting rod.

[0010] Preferably, two spring telescopic rods are fixedly connected to the top of the support. The telescopic ends of the spring telescopic rods are fixedly connected to tension rollers, and the two tension rollers are respectively designed to fit against the second synchronous belt and the third synchronous belt. The inside of the housing is connected to a tension wheel through a shaft, and the tension wheel is designed to fit against the first synchronous belt.

[0011] Preferably, a vacuum pump is mounted on the housing, the housing is equipped with a main body of a compression refrigeration device, an evaporator is mounted inside the housing, and the evaporator is connected to the main body of the compression refrigeration device via a connecting pipe.

[0012] Preferably, the cabinet door is hinged to the cabinet body and a sealing strip is glued to the door. The cabinet body is provided with a control panel, which consists of a display screen, a controller and a brake switch.

[0013] Compared with related technologies, the vacuum freeze-drying equipment for low-GI freeze-dried golden ear fungus crisps provided by this invention has the following beneficial effects:

[0014] 1. By pouring golden ear fungus into a food-grade plastic woven bucket and placing the bucket on a fixed platform, a motor-driven disc, along with the traction of inclined blocks and support rods, causes the fixed platform to swing. The force generated by the fixed platform causes the golden ear fungus inside the bucket to continuously tumble and roll, ensuring uniform and efficient drying while preventing clumping or sticking to the walls. The coordinated movement of the arc-shaped frame, arc-shaped slider, sleeve, and connecting rod restricts the platform's trajectory. A transmission component, driven by the motor, rotates the fan blades, guiding cold air towards the bucket, further improving the drying effect. The transmission component also provides secondary acceleration, increasing the fan blade speed. Compared to traditional stirring methods, this method avoids direct contact between the stirring structure and the golden ear fungus, preventing damage. Turning the fungus ensures more uniform drying, improving processing quality. Simultaneously, the fan blades deliver cold air to the fungus during the turning process, enhancing drying efficiency.

[0015] 2. The electric heating tube can appropriately increase the temperature inside the vacuum chamber, which is conducive to accelerating the sublimation of water. The ventilation holes can help heat enter the food-grade plastic woven bucket. The food-grade plastic woven bucket has poor thermal conductivity, which can prevent the temperature of the golden ear fungus from rising rapidly. The inner wall made of rubber material can increase the friction between the food-grade plastic woven bucket and the fixed platform, which can prevent the food-grade plastic woven bucket from falling off when the fixed platform swings. Attached Figure Description

[0016] Figure 1 This is an overall isometric view of the present invention;

[0017] Figure 2 This is a schematic diagram of the overall structure of the present invention;

[0018] Figure 3 This is a schematic diagram of the internal structure of the housing of the present invention;

[0019] Figure 4 This is an overall sectional view of the present invention;

[0020] Figure 5 This is a cross-sectional view of the housing of the present invention;

[0021] Figure 6 This is a schematic diagram of the back structure of the present invention.

[0022] In the diagram: 1. Housing; 2. Motor; 3. Disc; 4. Inclined block; 5. Support rod; 6. Fixing platform; 7. Food-grade plastic woven bucket; 8. Arc-shaped frame; 9. Arc-shaped slider; 10. Sleeve; 11. Connecting rod; 12. Transmission assembly; 121. First synchronous pulley; 122. Second synchronous pulley; 123. First synchronous belt; 124. Transmission rod; 125. Third synchronous pulley; 126. Support platform; 127. Fourth synchronous pulley; 128. Second synchronous belt; 129. Fifth synchronous pulley; 1210. Sixth synchronous pulley. Synchronous pulley; 1211, Third synchronous belt; 1212, Linkage rod; 1213, Limit ring; 1214, Limit plate; 13, Fan blade; 14, Electric heating element; 15, Ventilation hole; 16, Perforated plate; 17, Tensioning pulley; 18, Spring telescopic rod; 19, Tensioning roller; 20, Vacuum pump; 21, Main body of compression refrigeration equipment; 22, Evaporator; 23, Connecting pipe; 24, Box door; 25, Sealing strip; 26, Control panel; 261, Display screen; 262, Controller; 263, Brake switch. Detailed Implementation

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, not to describe a particular order.

[0024] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0025] Example 1

[0026] A preferred embodiment of the vacuum freeze-drying apparatus for low-GI freeze-dried golden ear fungus crisps provided by the present invention is as follows: Figures 1 to 6 As shown: A vacuum freeze-drying device for low-GI freeze-dried golden ear fungus crisps includes a housing 1; a motor 2 assembled inside the housing 1, a disc 3 fixed to the output end of the motor 2, an inclined block 4 fixedly connected to the top of the disc 3, and a support rod 5 connected to the top of the inclined block 4 via a shaft, a fixed platform 6 fixedly connected to the end of the support rod 5 away from the inclined block 4, an food-grade plastic woven bucket 7 placed on the fixed platform 6, an arc-shaped frame 8 fixedly connected inside the housing 1, an arc-shaped slider 9 slidably arranged on the arc-shaped frame 8, a sleeve 10 fixedly connected to the outer wall of the support rod 5, a connecting rod 11 inserted into the inside of the sleeve 10, and one end of the connecting rod 11 fixedly connected to the arc-shaped slider 9, a transmission assembly 12 fixedly arranged at the output end of the motor 2, and a fan blade 13 detachably arranged on the transmission assembly 12.

[0027] In this embodiment, the golden ear fungus is poured into the food-grade plastic woven bucket 7 and placed on the fixed platform 6. The motor 2 drives the disc 3, which, under the traction of the inclined block 4 and the support rod 5, can drive the fixed platform 6 to swing. The force generated by the fixed platform 6 can cause the golden ear fungus in the food-grade plastic woven bucket 7 to continuously bounce and roll, ensuring the uniformity and efficiency of the drying of the golden ear fungus, while preventing the golden ear fungus from clumping or sticking to the wall. The movement trajectory of the fixed platform 6 can be restricted by the cooperation of the arc frame 8, the arc slider 9, the sleeve 10 and the connecting rod 11. When driven by the motor 2, the transmission component 12 drives the fan blade 13 to rotate, which can guide the cold air to blow towards the food-grade plastic woven bucket 7, which is beneficial to improving the drying effect of the golden ear fungus. In addition, the transmission component 12 has a secondary acceleration function, which is beneficial to increasing the rotation speed of the fan blade 13.

[0028] In a further preferred embodiment of the present invention, the transmission assembly 12 includes a first synchronous pulley 121, a second synchronous pulley 122, a first synchronous belt 123, a transmission rod 124, a third synchronous pulley 125, a support 126, a fourth synchronous pulley 127, a second synchronous belt 128, a fifth synchronous pulley 129, a sixth synchronous pulley 1210, a third synchronous belt 1211, and a linkage rod 1212. The first synchronous pulley 121 is fixedly connected to the output end of the motor 2. The second synchronous pulley 122 is connected to the inside of the housing 1 via a shaft, and the first synchronous belt 123 is sleeved between the second synchronous pulley 122 and the first synchronous pulley 121. The transmission rod 124 is fixedly connected to the second synchronous pulley 122 for transmission. A third synchronous pulley 125 is fixedly connected to the end of rod 124 away from the second synchronous pulley 122. A support 126 is fixedly connected inside the housing 1. A fourth synchronous pulley 127 is connected to the support 126 via a shaft. A second synchronous belt 128 is sleeved between the fourth synchronous pulley 127 and the second synchronous belt 128. A fifth synchronous pulley 129 is fixedly connected to the bottom of the fourth synchronous pulley 127. A sixth synchronous pulley 1210 is connected to the support 126 via a shaft. A third synchronous belt 1211 is sleeved between the sixth synchronous pulley 1210 and the fifth synchronous pulley 129. A linkage rod 1212 is fixedly connected to the bottom of the sixth synchronous pulley 1210. The fan blade 13 is assembled on the linkage rod 1212.

[0029] In this embodiment, the first synchronous belt 123 can drive the second synchronous pulley 122 to rotate synchronously when the first synchronous pulley 121 is driven. The transmission rod 124 can drive the third synchronous pulley 125 to rotate synchronously when the second synchronous pulley 122 rotates. The second synchronous belt 128 can drive the fourth synchronous pulley 127 when the third synchronous pulley 125 rotates. Since the fifth synchronous pulley 129 is fixedly connected to the fourth synchronous pulley 127, when the fourth synchronous pulley 127 rotates, the fifth synchronous pulley 129 can drive the sixth synchronous pulley 1210 to rotate through the third synchronous belt 1211. Under the transmission of the linkage rod 1212, the fan blade 13 can rotate.

[0030] In a further preferred embodiment of the present invention, the size of the third synchronous pulley 125 is larger than that of the fourth synchronous pulley 127, the size of the fifth synchronous pulley 129 is larger than that of the third synchronous pulley 125, the size of the fourth synchronous pulley 127 is larger than that of the sixth synchronous pulley 1210, a limiting ring 1213 is sleeved on the transmission rod 124, and the other end of the limiting ring 1213 is fixedly connected to the inner wall of the housing 1, and a pair of limiting plates 1214 are fixed on the transmission rod 124, and the two limiting plates 1214 are respectively located at the top and bottom of the limiting ring 1213.

[0031] In this embodiment, due to the different sizes of the synchronous pulleys, a two-stage acceleration effect can be achieved during the transmission process. Even if the swing rate of the fixed platform 6 is low, the normal rotation of the fan blade 13 can be guaranteed. The limiting ring 1213 and the limiting plate 1214 can provide good stability when the transmission rod 124 rotates.

[0032] Example 2

[0033] Based on Example 1, a preferred embodiment of the vacuum freeze-drying apparatus for low-GI freeze-dried golden ear fungus crisps provided by the present invention is as follows: Figures 1 to 6 As shown: an electric heating tube 14 is mounted on the bottom of the fixed platform 6. Several ventilation holes 15 are equidistantly opened on the bottom of the fixed platform 6. The inner wall of the fixed platform 6 is made of rubber material, and the food-grade plastic woven bucket 7 is designed to fit snugly against the inner wall of the fixed platform 6.

[0034] In this embodiment, the temperature inside the vacuum chamber 1 can be appropriately increased by the electric heating tube 14, which is beneficial to accelerate the sublimation of water. The ventilation hole 15 can help heat enter the food-grade plastic woven bucket 7. The food-grade plastic woven bucket 7 has poor thermal conductivity, which can prevent the temperature of the golden ear fungus from rising rapidly. The inner wall made of rubber material can increase the friction between the food-grade plastic woven bucket 7 and the fixed platform 6.

[0035] In a further preferred embodiment of the present invention, a perforated plate 16 is hinged to the top of the food-grade plastic woven bucket 7, the fan blade 13 is located above the top of the food-grade plastic woven bucket 7, and the inner contour of the sleeve 10 is larger than the outer contour of the connecting rod 11.

[0036] In this embodiment, the perforated plate 16 can ensure ventilation inside the food-grade plastic woven bucket 7. The sleeve 10 is larger than the connecting rod 11, so that when the fixed platform 6 swings, the connecting rod 11 can move to a certain extent without coming out of the sleeve 10, thus avoiding jamming.

[0037] In a further preferred embodiment of the present invention, two spring telescopic rods 18 are fixedly connected to the top of the support 126. The telescopic ends of the spring telescopic rods 18 are fixedly connected to tension rollers 19, and the two tension rollers 19 are respectively designed to fit against the second synchronous belt 128 and the third synchronous belt 1211. The inside of the housing 1 is connected to a tension wheel 17 through a shaft, and the tension wheel 17 is designed to fit against the first synchronous belt 123.

[0038] In this embodiment, the tensioning wheel 17 is used to tension the first synchronous belt 123 to ensure the transmission effect of the first synchronous belt 123. The spring telescopic rod 18 can be contracted to pull the tensioning roller 19 to fit with the second synchronous belt 128 and the third synchronous belt 1211, which can tension the second synchronous belt 128 and the third synchronous belt 1211.

[0039] In a further preferred embodiment of the present invention, a vacuum pump 20 is mounted on a housing 1, a compression refrigeration equipment body 21 is provided on the housing 1, an evaporator 22 is mounted inside the housing 1, and the evaporator 22 and the compression refrigeration equipment body 21 are connected by a connecting pipe 23.

[0040] In this embodiment, the main body 21 of the compression refrigeration equipment and the evaporator 22 are used to cool the internal space of the box 1. By lowering the temperature to -30℃ to -40℃, the free water and some bound water in the ear freeze to form solid ice crystals. When the ear remains frozen, the vacuum pump 20 is started to reduce the pressure inside the box 1 and form a vacuum environment. The ice crystals in the ear sublimate directly into water vapor under vacuum conditions. The main body 21 of the compression refrigeration equipment continues to maintain the low temperature environment to ensure that the ice crystals do not melt during the sublimation process.

[0041] In a further preferred embodiment of the present invention, a door 24 is hinged to the housing 1, and a sealing strip 25 is glued to the door 24. A control panel 26 is provided on the housing 1. The control panel 26 consists of a display screen 261, a controller 262 and a brake switch 263.

[0042] In this embodiment, the sealing strip 25 can improve the sealing performance of the cabinet door 24, the display screen 261 is used to view the operation status of the electrical equipment on the cabinet 1, the controller 262 can control the operation of the electrical equipment, and the brake switch 263 can perform emergency braking in special circumstances.

[0043] It is worth noting that the circuits, electronic components, and modules involved in this invention are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this invention does not involve improvements to the software and methods.

[0044] It should be understood that the disclosed apparatus can be implemented in other ways, given the several embodiments provided in this application. For example, the apparatus embodiments described above are merely illustrative; the division of units described above is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or communication connections shown or discussed may be through some interfaces; the indirect coupling or communication connections between devices or units may be telecommunications or other forms.

[0045] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit the scope of protection of the invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art can still combine, add, delete, or otherwise adjust the features of the various embodiments of the present invention according to the circumstances without conflict or creative effort, thereby obtaining different technical solutions that do not fundamentally depart from the concept of the present invention. These technical solutions also fall within the scope of protection of the present invention.

Claims

1. A vacuum freeze-drying apparatus for low-GI freeze-dried golden ear fungus crisps, characterized in that, include: Box (1); A motor (2) is assembled inside the housing (1). A disc (3) is fixed to the output end of the motor (2). An inclined block (4) is fixedly connected to the top of the disc (3). A support rod (5) is connected to the top of the inclined block (4) via a shaft. A fixed platform (6) is fixedly connected to the end of the support rod (5) away from the inclined block (4). A food-grade plastic woven bucket (7) is placed on the fixed platform (6). An arc frame (8) is fixedly connected inside the housing (1). An arc slider (9) is slidably arranged on the arc frame (8). A sleeve (10) is fixedly connected to the outer wall of the support rod (5). A connecting rod (11) is inserted into the inside of the sleeve (10). One end of the connecting rod (11) is fixedly connected to the arc slider (9). A transmission assembly (12) is fixedly arranged at the output end of the motor (2). A fan blade (13) is detachably arranged on the transmission assembly (12).

2. The vacuum freeze-drying equipment for low-GI freeze-dried golden ear fungus crisps as described in claim 1, characterized in that, The transmission assembly (12) includes a first synchronous pulley (121), a second synchronous pulley (122), a first synchronous belt (123), a transmission rod (124), a third synchronous pulley (125), a support (126), a fourth synchronous pulley (127), a second synchronous belt (128), a fifth synchronous pulley (129), a sixth synchronous pulley (1210), a third synchronous belt (1211), and a linkage rod (1212). A first synchronous pulley (121) is fixedly connected to the output end of the motor (2). A second synchronous pulley (122) is connected to the inside of the housing (1) via a shaft. A first synchronous belt (123) is sleeved between the second synchronous pulley (122) and the first synchronous pulley (121). A transmission rod (124) is fixedly connected to the second synchronous pulley (122). A third synchronous pulley (125) is fixedly connected to the end of the transmission rod (124) away from the second synchronous pulley (122). A support (126) is fixedly connected to the inside of the housing (1). A third synchronous pulley (125) is connected to the support (126) via a shaft. The four synchronous pulleys (127) are connected together, and the second synchronous belt (128) is sleeved between the fourth synchronous pulley (127) and the second synchronous belt (128). The bottom of the fourth synchronous pulley (127) is fixedly connected to the fifth synchronous pulley (129). The support (126) is connected to the sixth synchronous pulley (1210) by a shaft. The sixth synchronous pulley (1210) and the fifth synchronous pulley (129) are sleeved together, and the bottom of the sixth synchronous pulley (1210) is fixedly connected to the linkage rod (1212). The fan blade (13) is mounted on the linkage rod (1212).

3. The vacuum freeze-drying equipment for low-GI freeze-dried golden ear fungus crisps as described in claim 2, characterized in that, The third synchronous pulley (125) is larger than the fourth synchronous pulley (127), the fifth synchronous pulley (129) is larger than the third synchronous pulley (125), the fourth synchronous pulley (127) is larger than the sixth synchronous pulley (1210), a limiting ring (1213) is fitted on the transmission rod (124), and the other end of the limiting ring (1213) is fixedly connected to the inner wall of the housing (1). A pair of limiting plates (1214) are fixed on the transmission rod (124), and the two limiting plates (1214) are located at the top and bottom of the limiting ring (1213) respectively.

4. The vacuum freeze-drying equipment for low-GI freeze-dried golden ear fungus crisps as described in claim 1, characterized in that, An electric heating tube (14) is installed at the bottom of the fixed platform (6). Several ventilation holes (15) are equidistantly opened at the bottom of the fixed platform (6). The inner wall of the fixed platform (6) is made of rubber material, and the food-grade plastic woven bucket (7) is designed to fit the inner wall of the fixed platform (6).

5. The vacuum freeze-drying equipment for low-GI freeze-dried golden ear fungus crisps as described in claim 1, characterized in that, The top of the food-grade plastic woven bucket (7) is hinged with a perforated plate (16), the fan blade (13) is located above the top of the food-grade plastic woven bucket (7), and the inner contour of the sleeve (10) is larger than the outer contour of the connecting rod (11).

6. The vacuum freeze-drying equipment for low-GI freeze-dried golden ear fungus crisps as described in claim 2, characterized in that, Two spring telescopic rods (18) are fixedly connected to the top of the support (126). Tensioning rollers (19) are fixedly connected to the telescopic ends of the spring telescopic rods (18). The two tensioning rollers (19) are respectively designed to fit against the second synchronous belt (128) and the third synchronous belt (1211). The inside of the housing (1) is connected to a tensioning wheel (17) through a shaft. The tensioning wheel (17) is designed to fit against the first synchronous belt (123).

7. The vacuum freeze-drying equipment for low-GI freeze-dried golden ear fungus crisps as described in claim 1, characterized in that, A vacuum pump (20) is mounted on the housing (1). A compression refrigeration equipment body (21) is provided on the housing (1). An evaporator (22) is installed inside the housing (1), and the evaporator (22) is connected to the compression refrigeration equipment body (21) by a connecting pipe (23).

8. The vacuum freeze-drying equipment for low-GI freeze-dried golden ear fungus crisps as described in claim 1, characterized in that, A door (24) is hinged to the housing (1) and a sealing strip (25) is glued to the door (24). A control panel (26) is provided on the housing (1). The control panel (26) consists of a display screen (261), a controller (262) and a brake switch (263).

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