Microwave continuous freeze dryer for pet food and polysaccharide material industry

Abstract

The utility model discloses a microwave continuous freeze dryer for the pet food and polysaccharide material industry. The microwave continuous freeze dryer comprises a frame body, a cavity, a cold trap, a vacuum unit, a cooling frame and a plate heat exchanger, the cavity is arranged in the frame body, and a plurality of groups of microwave generators are arranged on the outer side of the cavity and are used for performing microwave heating in the cavity; the cold trap is communicated with the cavity; the vacuum unit is communicated with the cavity through the cold trap and is used for vacuumizing the cavity; the cooling frame is movably arranged in the cavity, a plurality of cooling plates are arranged on the cooling frame, and the cooling plates are in a hollow state; the plate heat exchanger communicates with the cooling plate through a water inlet pipe and a water outlet pipe. According to the utility model, the drying is more uniform and rapid, and the drying efficiency and the drying quality are greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of microwave freeze-drying equipment technology, and in particular to a microwave continuous freeze dryer for the pet food and polysaccharide material industries. Background Technology

[0002] Vacuum freeze-drying freezes most of the water in the material into ice, and then provides a low-temperature heat source to allow the ice to sublimate directly into water vapor under vacuum, thus drying the material. Because freeze-drying is carried out at low temperatures, it avoids thermal and oxidative damage during the drying process, especially for pet food and polysaccharide materials, which may lose some of their benefits during high-temperature drying.

[0003] In existing technologies, vacuum cooling and drying methods mostly involve directly removing the air from the vacuum chamber and cooling the chamber to below zero. This is inefficient and may cause uneven temperature distribution within the chamber, resulting in some materials not reaching the predetermined temperature. Summary of the Invention

[0004] According to an embodiment of the present invention, a microwave continuous freeze dryer for the pet food and polysaccharide materials industry is provided, comprising:

[0005] Frame,

[0006] The cavity is set inside the frame, and several sets of microwave generators are set on the outside of the cavity. The microwave generators are used to microwave heat the cavity.

[0007] The cold trap is connected to the cavity;

[0008] The vacuum unit is connected to the cavity through a cold trap and is used to evacuate the cavity.

[0009] A cooling rack is movably installed inside the cavity, and several cooling plates are installed on the cooling rack. The cooling plates are hollow.

[0010] Plate heat exchangers are connected to cooling plates via inlet and outlet water pipes.

[0011] Furthermore, it also includes: a first drive cylinder, which is connected to the cavity and its output end is connected to the cooling rack, and can drive the cooling rack to reciprocate linear motion.

[0012] Furthermore, a sealing door and a first drive mechanism are provided at one end of the cavity;

[0013] The first drive mechanism is mounted on the frame and connected to the sealed door, which can drive the sealed door to open and close.

[0014] Furthermore, the first drive mechanism includes: a lead screw lifting mechanism, a pair of fixed brackets, and an air pump;

[0015] A pair of fixed brackets are installed at both ends of the sealed door and are slidably connected to the sealed door;

[0016] A pair of airbags are installed inside the fixed frame. One end of the airbag is connected to the fixed frame, and the other end is connected to the sealing door.

[0017] An air pump, which is connected to the airbag, can drive the airbag to contract and expand;

[0018] The output end of the screw lifting mechanism is connected to a pair of fixed frames, which can drive the pair of fixed frames to move up and down.

[0019] Furthermore, a number of first guide rails are provided on one side of the fixed frame. The first guide rails are fixedly connected to the frame body, and the fixed frame is slidably connected to the first guide rails.

[0020] Furthermore, the cooling plate is equipped with several guide rods, which form flow channels. The inlet and outlet pipes of the plate heat exchanger are connected to the beginning and end of the flow channels through flexible hoses.

[0021] Furthermore, several welding holes are provided at the connection between the guide rod and the cooling plate to facilitate a secure welding of the guide rod and the cooling plate.

[0022] Furthermore, several second guide rails are provided inside the cavity, and the cooling rack is slidably connected to several second guide rails through guide wheels.

[0023] The microwave continuous freeze dryer for the pet food and polysaccharide materials industry according to the present invention provides more uniform and faster drying, greatly improving drying efficiency and drying quality.

[0024] It should be understood that both the foregoing general description and the following detailed description are exemplary and intended to provide further illustration of the claimed technology. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure according to an embodiment of the present utility model;

[0026] Figure 2 for Figure 1 Enlarged view of point A;

[0027] Figure 3 This is a left view according to an embodiment of the present utility model;

[0028] Figure 4 This is a partial structural diagram of the cavity and frame according to an embodiment of the present utility model;

[0029] Figure 5 for Figure 4 The main view;

[0030] Figure 6This is a schematic diagram of the internal structure of the cooling plate according to an embodiment of the present utility model;

[0031] Figure 7 for Figure 6 Enlarged view of point B. Detailed Implementation

[0032] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, further illustrating the present invention.

[0033] First, combine Figures 1-7 This invention describes a microwave continuous freeze dryer for the pet food and polysaccharide materials industry, which is widely used in the microwave freeze drying industry.

[0034] like Figures 1-7 As shown in the figure, the microwave continuous freeze dryer for the pet food and polysaccharide material industry according to an embodiment of the present invention includes:

[0035] Frame 1,

[0036] The cavity 2 is located inside the frame 1, and several sets of microwave generators 21 are arranged on the outside of the cavity 2. The microwave generators 21 are used to microwave heat the cavity 2.

[0037] Cold trap 3 is connected to cavity 2 and is used to condense and discharge water vapor inside cavity 2.

[0038] Vacuum unit 4 is connected to cavity 2 via cold trap 3 and is used to evacuate cavity 2.

[0039] Cooling rack 5 is movably disposed inside cavity 2. Several cooling plates 51 are provided on cooling rack 5. Cooling plates 51 are hollow.

[0040] Plate heat exchanger 6 is connected to cooling plate 51 through inlet pipe 61 and outlet pipe 62, and is used to rapidly cool down cooling plate 51.

[0041] Furthermore, such as Figure 4 As shown, in this embodiment, it also includes: a first driving cylinder 22, which is connected to the cavity 2 and its output end is connected to the cooling rack 5, and can drive the cooling rack 5 to reciprocate linearly.

[0042] Furthermore, such as Figures 1-2 As shown, in this embodiment, a sealing door 23 and a first driving mechanism 7 are provided at one end of the cavity 2;

[0043] The first drive mechanism 7 is mounted on the frame 1 and connected to the sealing door 23, which can drive the sealing door 23 to open and close.

[0044] Furthermore, such as Figures 1-2 As shown, in this embodiment, the first drive mechanism 7 includes: a lead screw lifting mechanism 71 (prior art), a pair of fixing frames 72, and an air pump (not shown).

[0045] A pair of fixing brackets 72 are installed at both ends of the sealing door 23 and are slidably connected to the sealing door 23 via a slide rail;

[0046] A pair of airbags 721 are installed inside the fixed frame 72. One end of the airbag 721 is connected to the fixed frame 72, and the other end is connected to the sealing door 23.

[0047] An air pump is connected to an airbag 721 and can drive the airbag 721 to contract and expand. The airbag 721 drives the sealing door 23 to approach and seal the cavity 2, thus improving the sealing effect.

[0048] The output end of the lead screw lifting mechanism 71 is connected to a pair of fixed frames 72, which can drive the pair of fixed frames 72 to move up and down.

[0049] Furthermore, such as Figure 1 As shown, in this embodiment, a plurality of first guide rails 74 are provided on one side of the fixed frame 72. The first guide rails 74 are fixedly connected to the frame body 1, and the fixed frame 72 is slidably connected to the first guide rails 74.

[0050] Furthermore, such as Figures 6-7 As shown, in this embodiment, the cooling plate 51 is provided with a plurality of guide rods 511, and the guide rods 511 form a flow channel 512. The coolant passes through the flow channel 512 to make the cooling temperature of the entire cooling plate 51 more uniform. The inlet pipe 61 and outlet pipe 62 of the plate heat exchanger 6 are connected to the beginning and end of the flow channel 512 through flexible hoses.

[0051] Furthermore, such as Figure 7 As shown, in this embodiment, a plurality of welding holes 513 are provided at the connection between the guide rod 511 and the cooling plate 51 to make the welding between the guide rod 511 and the cooling plate 51 more secure.

[0052] Furthermore, such as Figure 5 As shown, in this embodiment, a plurality of second guide rails 24 are provided inside the cavity 2, and the cooling rack 5 is slidably connected to the plurality of second guide rails 24 through guide wheels. The second guide rails 24 make the sealing door 23 more stable during the rising or falling process.

[0053] Working principle: First, the material tray is placed on the corresponding cooling plate 51 of the cooling rack 5. Second, the first drive mechanism 7 drives the sealing door 23 to seal the cavity 2. Then, the vacuum unit 4 starts to evacuate the vacuum, and at the same time, the plate heat exchanger 6 operates, inputting coolant into the flow channel 512 of the cooling plate 51, so that the cooling plate 51 is rapidly cooled to the specified temperature and then stops. Since the material is placed directly on the cooling plate 51 through the tray, it can be cooled more quickly. Then, the microwave starts to heat the frozen material, causing the ice in the material to sublimate. When the temperature of the cooling plate 51 is lower than the lower limit temperature, the plate heat exchanger 6 will continue to work. At the same time, the vacuum unit 4 quickly removes the water vapor in the cavity 2 and liquefies it through the cold trap 3 before discharging it. During this process, the first drive cylinder 22 repeatedly drives the cooling rack 5 to reciprocate in the cavity 2 so that the material dries more evenly.

[0054] Above, refer to Figures 1-7 A microwave continuous freeze dryer for the pet food and polysaccharide materials industry is described according to an embodiment of the present invention, which dries more evenly and quickly, greatly improving drying efficiency and drying quality.

[0055] It should be noted that, in this specification, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes that element.

[0056] Although the present invention has been described in detail through the above preferred embodiments, it should be understood that the above description should not be considered as a limitation of the present invention. Various modifications and substitutions to the present invention will be apparent to those skilled in the art after reading the above content. Therefore, the scope of protection of the present invention should be defined by the appended claims.

Claims

1. A microwave continuous freeze dryer for the pet food and polysaccharide material industries, characterized in that, Include: Frame, A cavity is disposed within the frame, and several sets of microwave generators are disposed on the outside of the cavity. The microwave generators are used to microwave heat the cavity. A cold trap, which is connected to the cavity; A vacuum unit, which is connected to the cavity via the cold trap, is used to evacuate the cavity. A cooling rack is movably disposed within the cavity, and a plurality of cooling plates are disposed on the cooling rack, wherein the cooling plates are hollow. A plate heat exchanger, wherein the plate heat exchanger is connected to the cooling plate via an inlet pipe and an outlet pipe.

2. The microwave continuous freeze dryer for the pet food and polysaccharide material industry as described in claim 1, characterized in that, It also includes: a first drive cylinder, which is connected to the cavity and its output end is connected to the cooling rack, and can drive the cooling rack to reciprocate linearly.

3. The microwave continuous freeze dryer for the pet food and polysaccharide material industry as described in claim 1, characterized in that, A sealing door and a first drive mechanism are provided at one end of the cavity; The first drive mechanism is mounted on the frame and connected to the sealing door, and can drive the sealing door to open and close.

4. The microwave continuous freeze dryer for the pet food and polysaccharide material industry as described in claim 3, characterized in that, The first drive mechanism includes: a lead screw lifting mechanism, a pair of fixed frames, and an air pump; The pair of fixing brackets are disposed at both ends of the sealing door and are slidably connected to the sealing door; The fixed frame is equipped with a pair of airbags, one end of which is connected to the fixed frame and the other end of which is connected to the sealing door; An air pump, which is connected to the airbag, can drive the airbag to contract and expand; The output end of the lead screw lifting mechanism is connected to a pair of fixed frames, which can drive the pair of fixed frames to move up and down.

5. The microwave continuous freeze dryer for the pet food and polysaccharide material industry as described in claim 4, characterized in that, A plurality of first guide rails are provided on one side of the fixed frame. The first guide rails are fixedly connected to the frame body, and the fixed frame is slidably connected to the first guide rails.

6. The microwave continuous freeze dryer for the pet food and polysaccharide material industry as described in claim 1, characterized in that, The cooling plate is provided with several guide rods, and the guide rods form a flow channel. The inlet pipe and outlet pipe of the plate heat exchanger are connected to the beginning and end of the flow channel through flexible hoses.

7. The microwave continuous freeze dryer for the pet food and polysaccharide material industry as described in claim 6, characterized in that, The connection between the guide rod and the cooling plate is provided with several welding holes to facilitate a secure welding of the guide rod to the cooling plate.

8. The microwave continuous freeze dryer for the pet food and polysaccharide material industry as described in claim 1, characterized in that, The cavity is provided with several second guide rails, and the cooling rack is slidably connected to several second guide rails via guide wheels.

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