Vacuum freeze-drying system comprising multiple vacuum units

Abstract

The utility model discloses a vacuum freeze-drying system comprising multiple vacuum units, and relates to the freeze-drying processing field, the vacuum freeze-drying system comprises a freeze-drying machine main body, the freeze-drying machine main body comprises a vacuum making box shell, the interior of the vacuum making box shell is provided with two symmetrical slots, the interiors of the two slots are respectively provided with a support arm in a sliding clamping manner, and the support arms are connected with the vacuum making box shell. A plurality of trays which are evenly distributed from top to bottom are arranged in the middle of the two supporting arms, sliding rods are fixedly installed at the four corners of the two sides of each tray, and leakage holes which are evenly distributed are formed in the bottoms of the trays. The multiple trays are arranged, so that products are evenly laid on the trays during processing, ice blocks in the products can be better sublimated, the heat convection effect between the products can be accelerated through the leaking holes, the freeze-drying efficiency of the products is higher, the situation that the middle products are not completely processed due to stacking is avoided, and the product freeze-drying efficiency is improved. The freeze-drying efficiency is improved, and the processing time is shortened.

Description

Technical Field

[0001] The utility model relates to the field of freeze-drying treatment, in particular to a vacuum freeze-drying system comprising multiple vacuum units. Background Art

[0002] Patent application number CN216481863U discloses a vacuum freeze-drying device, including a vacuum production box, two fixed frames are symmetrically fixedly installed at the bottom of the vacuum production box, a feeding pipe is fixedly installed at the top of the vacuum production box, a discharge port is opened at the bottom of the vacuum production box, a shielding device is movably installed at the bottom of the vacuum production box, two inclined plates are symmetrically fixedly installed on the inner wall of the bottom of the vacuum production box, and a double-axis motor is slidably installed on the inner wall of the top of the vacuum production box;

[0003] However, the above scheme has the following shortcomings: 1. During the freeze-drying process, the materials are piled up inside the vacuum production box, and the heat convection effect is poor at the location where the pile is thicker, which easily causes incomplete processing of the products in the middle and bottom; 2. The texture of the freeze-dried product is brittle and easy to powder, so the stirring rod will cause the product to break when working, affecting the quality of the final production and subsequent sales. Therefore, it is necessary to propose a vacuum freeze-drying system including multiple vacuum units to solve the above problems. Utility Model Content

[0004] The utility model aims to provide a vacuum freeze-drying system comprising multiple vacuum units to solve the above-mentioned problem of incomplete processing and damaged products affecting subsequent sales.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a vacuum freeze-drying system including multiple vacuum units, including a freeze-drying machine body, the freeze-drying machine body including a vacuum production box shell, the interior of the vacuum production box shell is provided with two symmetrical slots, the interiors of the two slots are slidably provided with support arms, a plurality of trays evenly distributed from top to bottom are provided in the middle positions of the two support arms, sliding rods are fixedly installed at the four corners on both sides of the plurality of trays, the bottoms of the plurality of trays are provided with evenly distributed leakage holes, a first slide groove corresponding to the slide rod is provided on the support arm, and the slide rod is slidably provided in the corresponding first slide groove.

[0006] Preferably, a low vacuum unit and a high vacuum unit are respectively provided on both sides of the freeze dryer body, the low vacuum unit includes a low vacuum pump, a first dust collector, a first drying trap, and a first water vapor separator, and the high vacuum unit includes a high vacuum pump, a second dust collector, a second drying trap, and a second water vapor separator.

[0007] Preferably, the first dust collector and the second dust collector are both connected to the interior of the vacuum production box shell, the first dust collector is connected to the first drying trap through a pipeline, the second dust collector is connected to the second drying trap through a pipeline, the first water vapor separator is installed on the exhaust pipeline of the low vacuum pump, and the second water vapor separator is installed on the exhaust pipeline of the high vacuum pump.

[0008] Preferably, a plurality of heating wires are fixedly installed inside the vacuum production box shell, and the heating wires and the tray are alternately arranged from top to bottom.

[0009] Preferably, a plurality of limit blocks corresponding to the slide bars are fixedly installed inside the first slide groove, and the limit blocks are fitted with the corresponding lower surfaces of the slide bars.

[0010] Preferably, a second slide groove is opened in the middle position of the inner bottom surface of the vacuum production box shell, and a push plate is provided on the inner sliding card of the second slide groove. A motor is provided under the push plate, and the motor is fixedly installed inside the vacuum production box shell. A Z-shaped connecting rod is fixedly installed on the driving end of the motor, and a transmission connecting rod is rotatably installed on the end of the Z-shaped connecting rod away from the motor, and the end of the transmission connecting rod away from the Z-shaped connecting rod is rotatably installed in the middle of the push plate.

[0011] Preferably, a support rod is provided between each of the trays, the support rod is fixedly installed in the middle of the tray, and the push plate is in contact with the lower surface of a tray at the lower end.

[0012] Preferably, an observation dome is fixedly installed on the top of the vacuum production box shell, a sealing door is hinged on one side of the vacuum production box shell, and a sealing gate is installed on the sealing door.

[0013] Technical effects and advantages of the utility model:

[0014] Setting up multiple trays allows the products to be evenly laid on the trays during processing, so that the ice inside the products can be better sublimated. The leak holes can accelerate the heat convection effect between the products, making the freeze-drying efficiency of the products higher. There will be no stacking that causes the middle product to not be fully processed, which improves the freeze-drying efficiency and reduces the processing time required;

[0015] By inserting heating wires, the heating wires can supply the heat required for ice crystal sublimation. The heat emitted by the heating wires is absorbed by the sublimation of ice crystals, achieving a dynamic balance of heat, which will not cause the temperature of the product to rise too much. Because frozen food will deteriorate when it is suddenly heated, the heating wires are set to ensure the quality of the product while speeding up the reaction rate.

[0016] By setting up low vacuum units and high vacuum units and using different units in different states, the air absorption rate can be accelerated, further speeding up the processing efficiency of the device and increasing the output of the enterprise;

[0017] By controlling the rotation rate of the motor to change the frequency of vibration and adapting different vibration speeds to different products, it can not only prevent adhesion between products, but also ensure the integrity of the product and will not affect subsequent sales. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The utility model is a structural schematic diagram of a vacuum freeze-drying system including multiple vacuum units.

[0019] Figure 2 It is a structural schematic diagram of the freeze dryer main body in the utility model.

[0020] Figure 3 It is a schematic diagram of the structure inside the vacuum box shell in the utility model.

[0021] Figure 4 It is a structural schematic diagram of the vacuum box shell in the utility model.

[0022] Figure 5 It is a structural schematic diagram of the push plate and the motor in the utility model.

[0023] Figure 6 The utility model is a work flow chart of a vacuum freeze-drying system including multiple vacuum units.

[0024] In the figure: 1. freeze dryer body; 2. low vacuum unit; 3. high vacuum unit; 4. support arm; 5. tray; 6. heating wire; 7. observation dome; 8. sealing door; 9. push plate; 10. motor; 11. Z-type connecting rod; 12. transmission connecting rod; 21. low vacuum pump; 31. high vacuum pump; 41. first slide groove; 51. slide rod; 52. leakage hole; 53. support rod; 81. sealing gate; 101. vacuum production box shell; 102. slot. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] The utility model provides Figure 1-6A vacuum freeze-drying system including multiple vacuum units is shown, including a freeze-drying machine body 1, the freeze-drying machine body 1 includes a vacuum production box shell 101, an observation dome 7 is fixedly installed on the top of the vacuum production box shell 101, a sealing door 8 is hinged on one side of the vacuum production box shell 101, and a sealing gate 81 is installed on the sealing door 8. When using the device for a freeze-drying process, the real-time status of the internal product can be observed through the observation dome 7. The provision of the sealing door 8 and the sealing gate 81 makes the device not an integrated design, which can facilitate the cleaning of the interior.

[0027] Two symmetrical slots 102 are provided inside the vacuum production box shell 101, and support arms 4 are slidably mounted inside the two slots 102. A plurality of trays 5 evenly distributed from top to bottom are provided in the middle of the two support arms 4, and slide bars 51 are fixedly mounted at the four corners on both sides of the plurality of trays 5. Evenly distributed leakage holes 52 are provided at the bottom of the plurality of trays 5, and a first slide groove 41 corresponding to the slide bar 51 is provided on the support arm 4. The slide bar 51 is slidably mounted inside the corresponding first slide groove 41, and a plurality of limit blocks corresponding to the slide bar 51 are fixedly mounted inside the first slide groove 41, and the limit blocks fit the corresponding lower surfaces of the slide bars 51.

[0028] Multiple trays 5 are provided so that the products can be evenly laid on the trays 5 during processing, so that the ice cubes inside the products can be better sublimated. The leakage holes 52 can accelerate the heat convection effect between the products, so that the freeze-drying efficiency of the products is higher, and there will be no stacking that causes the middle product to not be completely processed, thereby improving the freeze-drying efficiency and reducing the processing time.

[0029] A plurality of heating wires 6 are fixedly installed inside the vacuum manufacturing box housing 101 , and the heating wires 6 and the trays 5 are alternately arranged from top to bottom.

[0030] Because the ice crystals in the product will directly sublime into water vapor under vacuum conditions without going through the intermediate liquefaction stage, and the sublimation of ice crystals requires the absorption of a large amount of heat, but the temperature of the product itself is already very low after pretreatment. At this time, the heat absorption rate of the ice crystals is limited, which may reduce the overall efficiency of the product. In addition, a heating wire 6 is interspersed, which can supply the heat required for the sublimation of the ice crystals. The heat emitted by the heating wire 6 is absorbed by the sublimation of the ice crystals, achieving a dynamic balance of heat and preventing the temperature of the product from rising too much. Because frozen food will deteriorate internally when it is heated suddenly, the heating wire 6 is provided to ensure the quality of the product while also accelerating the reaction rate.

[0031] A low vacuum unit 2 and a high vacuum unit 3 are respectively provided on both sides of the freeze dryer body 1. The low vacuum unit 2 includes a low vacuum pump 21, a first dust collector, a first drying trap, and a first water vapor separator. The high vacuum unit 3 includes a high vacuum pump 31, a second dust collector, a second drying trap, and a second water vapor separator. The first dust collector and the second dust collector are both connected to the interior of the vacuum making box shell 101. The first dust collector is connected to the first drying trap through a pipeline, and the second dust collector is connected to the second drying trap through a pipeline. The first water vapor separator is installed on the exhaust pipeline of the low vacuum pump 21, and the second water vapor separator is installed on the exhaust pipeline of the high vacuum pump 31.

[0032] When the low vacuum pump 21 is working, it can quickly and massively exhaust the air inside the vacuum production box shell 101. However, the low vacuum pump 21 can only form a low vacuum state inside the vacuum production box shell 101, which is far from meeting the vacuum degree required for freeze drying. The high vacuum pump 31 can increase the vacuum degree to the state required for production. Due to the law of conservation of momentum, the relatively high vacuum pump 31 has a small amount of air suction and a low air suction speed. When the product is just placed inside the freeze dryer body 1, the low vacuum pump 21 can quickly suck out the air inside the vacuum production box shell 101. The gas, at this time, the heating wire 6 does not work. When the interior of the vacuum manufacturing box shell 101 reaches the maximum vacuum degree of the low vacuum pump 21, the high vacuum pump 31 is turned on and the low vacuum pump 21 is turned off. At this time, the heating wire 6 works, and the high vacuum pump 31 forms the vacuum degree required for processing inside the vacuum manufacturing box shell 101. At this time, the ice crystals inside the product undergo sublimation reaction. Therefore, by setting up a low vacuum unit 2 and a high vacuum unit 3, using different units in different states can speed up the air absorption rate, further speed up the processing efficiency of the device, and improve the output of the enterprise.

[0033] It should be noted that the drying trap can capture the sublimated water vapor and re-condense it into liquid or solid state. Because the water vapor generated by the sublimation of ice crystals will reduce the vacuum degree inside the vacuum production box shell 101, the water vapor is captured to ensure that the inside of the vacuum production box shell 101 is under a stable pressure. The dust collector can separate the dust in the air to prevent the dust from damaging the vacuum pump. The water vapor separator can prevent the reflux of liquefied liquid from causing damage to the vacuum pump.

[0034] A second slide groove is provided in the middle of the inner bottom surface of the vacuum production box shell 101, and a push plate 9 is provided on the inner sliding card of the second slide groove. A motor 10 is provided below the push plate 9, and the motor 10 is fixedly installed inside the vacuum production box shell 101. A Z-shaped connecting rod 11 is fixedly installed on the driving end of the motor 10, and a transmission connecting rod 12 is rotatably installed on the end of the Z-shaped connecting rod 11 away from the motor 10. The end of the transmission connecting rod 12 away from the Z-shaped connecting rod 11 is rotatably installed in the middle of the push plate 9. A support rod 53 is provided between each pair of trays 5, and the support rod 53 is fixedly installed in the middle of the tray 5. The push plate 9 fits against the lower surface of a tray 5 at the lower end.

[0035] Because the products after freeze-drying are brittle, they are easily broken or even powdered when squeezed or twisted, which will affect the subsequent sales of the products and reduce the quality of the products. Therefore, a push plate 9 is provided to control the motor 10 to work during the freeze-drying operation, drive the Z-type connecting rod 11 to rotate, and then drive the end of the transmission connecting rod 12 to produce reciprocating motion in the vertical direction. At this time, the push plate 9 is driven to move back and forth, so the push plate 9 will push all the trays 5 to reciprocate in the vertical direction. Because of the limit block, the tray 5 will not affect the heating wire 6 when moving. The frequency of vibration can be changed by controlling the rotation rate of the motor 10. Different vibration speeds can be adapted according to different products. It can not only prevent adhesion between products, but also ensure the integrity of the product and will not affect subsequent sales.

Claims

1. A vacuum freeze-drying system comprising multiple vacuum units, comprising a freeze-drying machine body (1), characterized in that: The freeze dryer body (1) comprises a vacuum making box shell (101), the interior of the vacuum making box shell (101) is provided with two symmetrical slots (102), the interiors of the two slots (102) are both slidably clamped with support arms (4), a plurality of trays (5) evenly distributed from top to bottom are provided in the middle of the two support arms (4), a plurality of slide bars (51) are fixedly installed at the four corners of both sides of the plurality of trays (5), the bottoms of the plurality of trays (5) are each provided with evenly distributed leakage holes (52), a first slide groove (41) corresponding to the slide bar (51) is provided on the support arm (4), and the slide bar (51) is slidably clamped in the corresponding first slide groove (41); A low vacuum unit (2) and a high vacuum unit (3) are respectively provided on both sides of the freeze dryer body (1); the low vacuum unit (2) comprises a low vacuum pump (21), a first dust collector, a first drying trap, and a first water-gas separator; and the high vacuum unit (3) comprises a high vacuum pump (31), a second dust collector, a second drying trap, and a second water-gas separator; A plurality of heating wires (6) are fixedly installed inside the vacuum manufacturing box shell (101), and the heating wires (6) and the tray (5) are arranged alternately from top to bottom.

2. A vacuum freeze-drying system comprising multiple vacuum units according to claim 1, characterized in that: The first dust collector and the second dust collector are both connected to the interior of the vacuum manufacturing box shell (101); the first dust collector is connected to the first drying trap via a pipeline; the second dust collector is connected to the second drying trap via a pipeline; the first water-gas separator is installed on the exhaust pipeline of the low vacuum pump (21); and the second water-gas separator is installed on the exhaust pipeline of the high vacuum pump (31).

3. The vacuum freeze-drying system comprising multiple vacuum units according to claim 1, characterized in that: A plurality of limit blocks corresponding to the slide bars (51) are fixedly installed inside the first slide groove (41), and the limit blocks are fitted with the lower surfaces of the corresponding slide bars (51).

4. The vacuum freeze-drying system comprising multiple vacuum units according to claim 1, characterized in that: A second slide groove is provided in the middle of the inner bottom surface of the vacuum production box shell (101); a push plate (9) is provided inside the second slide groove for sliding; a motor (10) is provided below the push plate (9); the motor (10) is fixedly installed inside the vacuum production box shell (101); a Z-shaped connecting rod (11) is fixedly installed at the driving end of the motor (10); a transmission connecting rod (12) is rotatably installed at one end of the Z-shaped connecting rod (11) away from the motor (10); and the transmission connecting rod (12) is rotatably installed at the middle part of the push plate (9) at one end away from the Z-shaped connecting rod (11).

5. A vacuum freeze-drying system comprising multiple vacuum units according to claim 4, characterized in that: A support rod (53) is provided between each of the trays (5), and the support rod (53) is fixedly installed in the middle of the tray (5), and the push plate (9) is in contact with the lower surface of the tray (5) at the lower end.

6. The vacuum freeze-drying system comprising multiple vacuum units according to claim 1, characterized in that: An observation dome (7) is fixedly mounted on the top of the vacuum manufacturing box shell (101), a sealing door (8) is hingedly mounted on one side of the vacuum manufacturing box shell (101), and a sealing gate (81) is mounted on the sealing door (8).

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