Fresh-keeping method for raw beef

Abstract

The invention relates to the technical field of food preservation, in particular to a raw beef preservation method. The storage mechanism comprises a storage box, drawing boxes are slidably connected into a plurality of grooves of the storage box, and sealing mechanisms and fixing mechanisms are arranged at the grooves of the storage box. The fixing mechanism elastically moves to fix the drawing box or release the fixation of the drawing box, when the fixing mechanism fixes the drawing box, the sealing mechanism is driven to move to achieve double sealing, and when the fixation is released, the fixing mechanism drives the sealing mechanism to contract. According to the beef storage device, the drawing boxes are manually pushed into the storage box, the clamping mechanisms move, when the drawing boxes move into the grooves, clamping blocks in the clamping mechanisms are clamped into the drawing boxes, the drawing boxes are fixed, the situation that the drawing boxes slide out of the storage box due to vibration or inclination in the carrying or transporting process is avoided, the safety of beef storage is guaranteed, and the service life of the beef storage device is prolonged. And cold air leakage in the storage box caused by shifting of the drawing box is effectively avoided, and the sealing effect of the sealing mechanism is improved.

Description

Technical Field

[0001] The invention relates to the technical field of food preservation, in particular to a method for preserving raw beef. Background Art

[0002] Beef is rich in high-quality protein, which is a nutrient necessary for human growth, development and tissue repair. As people's quality of life improves, the requirements for food quality are also getting higher and higher. The preservation of raw beef is crucial to maintaining its quality and extending its shelf life.

[0003] Currently, most raw beef is preserved by refrigeration, that is, the raw beef is placed in a storage box of a refrigerator. However, during the transportation or handling of the raw beef, the refrigerator will inevitably shake. At this time, the raw beef will have an impact force on the inner wall of the storage box due to inertia. If the raw beef is heavy, the impact force will be greater. When the raw beef rushes forward due to inertia, it will press against the inner wall of the storage box. The force generated may push the storage box to move, which may cause the storage box to shift, and further may cause the seal to loosen, thereby impairing the preservation effect of the raw beef. In view of this, we propose a method for preserving raw beef. Summary of the invention

[0004] The object of the present invention is to provide a method for preserving raw beef to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides a method for preserving raw beef, comprising the following steps:

[0006] S1. Pressing the unlocking mechanism to release the fixing mechanism from the storage mechanism and open the storage mechanism;

[0007] S2. Place the food in multiple storage mechanisms by category, and then close the storage mechanisms. When the storage mechanisms are closed, the fixing mechanisms are driven to clamp and fix the storage mechanisms, wherein:

[0008] The storage mechanism comprises a storage box, wherein a plurality of grooves of the storage box are all slidably connected with drawers, and a sealing mechanism and a fixing mechanism are provided at the grooves of the storage box;

[0009] The fixing mechanism elastically moves to fix or release the drawer box. When the fixing mechanism fixes the drawer box, it drives the sealing mechanism to move to achieve double sealing. When the fixing mechanism releases the drawer box, the fixing mechanism drives the sealing mechanism to contract.

[0010] As a further improvement of the present technical solution, the sealing mechanism includes a No. 1 sealing ring fixedly connected to one side of the drawer box, a movable plate is slidably connected in the groove of the storage box, and a No. 2 sealing ring is fixedly connected to the side of the movable plate close to the No. 1 sealing ring.

[0011] As a further improvement of the present technical solution, the fixing mechanism includes at least two mounting blocks slidably connected in the groove of the storage box, and the two mounting blocks are symmetrically arranged on both sides of the drawer, one side of the mounting block is fixedly connected to the side of the movable plate away from the No. 2 sealing ring, and a clamping block is rotatably connected inside the rectangular groove of the mounting block, and clamping slots are provided on both sides of the drawer, and the clamping slots are clamped and adapted to the clamping blocks.

[0012] As a further improvement of the technical solution, one side of the clamping block is fixedly connected to a support plate, one side of the support plate is fixedly connected to a No. 1 return spring, and the side of the No. 1 return spring away from the support plate is fixedly connected to one side of the mounting block.

[0013] As a further improvement of the present technical solution, the side of the mounting block away from the movable plate is fixedly connected to a limiting rod, the side of the mounting block away from the movable plate is fixedly connected to a No. 2 return spring, and the side of the No. 2 return spring away from the mounting block is fixedly connected to the inner wall of the groove of the storage box.

[0014] As a further improvement of the technical solution, a limiting groove is provided on one side of the storage box groove close to the limiting rod, an extrusion block is slidably connected in the limiting groove, a sliding groove is obliquely provided on the limiting groove, and the extrusion block is slidably connected to the sliding groove.

[0015] As a further improvement of the present technical solution, the unlocking mechanism includes a pressing rod slidably connected to the inner wall of the storage box, one side of the pressing rod passes through the storage box, and the other side of the pressing rod is located directly below the support plate, and the side of the pressing rod close to the support plate is fixedly connected to a connecting plate, and the height of the connecting plate is greater than the spacing between the support plate and the rectangular groove.

[0016] As a further improvement of the present technical solution, a fixing ring is fixedly connected to the outer wall of the storage box, and the pressing rod is located inside the fixing ring, a positioning rod is slidably connected to the connecting plate, and one side of the positioning rod passes through the through hole of the fixing ring and the pressing rod, a No. 3 return spring is fixedly connected to the outer wall of the fixing ring, and the side of the No. 3 return spring away from the fixing ring is fixedly connected to one side of the positioning rod.

[0017] As a further improvement of the technical solution, both sides of the inner walls of the grooves of the multiple storage boxes are fixedly connected with fixed blocks, both sides of the multiple drawer boxes are fixedly connected with sliders, and the sliders are slidably connected to the fixed blocks.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. In the raw beef preservation method, the drawer box is manually pushed into the storage box, and the latching mechanism moves. When the drawer box moves into the groove, the latching block in the latching mechanism is latched into the drawer box to fix the drawer box, thereby preventing the drawer box from sliding out of the storage box due to vibration or tilt during handling or transportation. This not only ensures the safety of beef storage, but also effectively prevents cold air leakage inside the storage box due to displacement of the drawer box, thereby improving the sealing effect of the sealing mechanism.

[0020] 2. In the method for preserving raw beef, when the clamping mechanism and the drawer box are clamped, the second sealing ring is driven to abut against the first sealing ring to form a double seal, thereby improving the sealing effect of the device;

[0021] When the clamping mechanism and the drawer box are released, the No. 2 sealing ring is driven to move toward the inside of the storage box, effectively preventing the No. 2 sealing ring from approaching the outer wall of the storage box and preventing foreign impurities from adhering to the No. 2 sealing ring and affecting the sealing effect of the No. 2 sealing ring, thereby increasing the service life of the No. 2 sealing ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the overall cross-sectional structure of the present invention;

[0024] Figure 3 It is a schematic diagram of the overall side section structure of the present invention;

[0025] Figure 4 It is a schematic diagram of the sealing mechanism, the fixing mechanism and the drawer assembly of the present invention;

[0026] Figure 5 It is a schematic diagram of the sealing mechanism and the fixing mechanism structure of the present invention;

[0027] Figure 6 It is a structural schematic diagram of the fixing mechanism of the present invention;

[0028] Figure 7 It is a schematic diagram of the enlarged structure of point A of the present invention;

[0029] Figure 8 It is a cross-sectional schematic diagram of the extrusion block of the present invention;

[0030] Fig. 9 It is a plan view of the extrusion block in the first state and the extrusion block in the second state of the present invention.

[0031] The meaning of each number in the figure is:

[0032] 100, storage box; 110, drawer box; 120, fixing block; 121, slider;

[0033] 200, sealing mechanism; 210, No. 1 sealing ring; 211, moving plate; 212, No. 2 sealing ring;

[0034] 300, fixing mechanism; 310, mounting block; 311, clamping block; 312, supporting plate; 313, No. 1 return spring; 320, limiting rod; 321, No. 2 return spring; 330, extrusion block; 331, slide groove; 340, pressing rod; 341, connecting plate; 342, fixing ring; 343, positioning rod; 344, No. 3 return spring. DETAILED DESCRIPTION

[0035] The following will be combined with the accompanying drawings in the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] See also Figure 1-Figure 9 As shown, this embodiment provides a method for preserving raw beef, comprising the following steps:

[0037] S1, by pressing the unlocking mechanism, the fixing mechanism 300 is released from the storage mechanism, and the storage mechanism is opened;

[0038] S2. Place the food in multiple storage mechanisms by category, and then close the storage mechanisms. When the storage mechanisms are closed, the fixing mechanisms 300 are driven to clamp and fix the storage mechanisms, wherein:

[0039] The storage mechanism includes a storage box 100, wherein multiple grooves of the storage box 100 are slidably connected with drawers 110, which can be classified and stored according to the parts or production dates of raw beef, so as to facilitate and quickly locate the required beef. The grooves of the storage box 100 are provided with a sealing mechanism 200 and a fixing mechanism 300;

[0040] The fixing mechanism 300 elastically moves to fix or release the drawer box 110. When the fixing mechanism 300 fixes the drawer box 110, it drives the sealing mechanism 200 to move to achieve double sealing, thereby improving the sealing effect of the device. When releasing the fixation, the fixing mechanism 300 drives the sealing mechanism 200 to contract, thereby preventing foreign impurities from adhering to the sealing mechanism 200 and affecting the sealing effect of the sealing mechanism 200.

[0041] The present invention takes into account that most of the existing methods for preserving raw beef are refrigeration methods (the compressor first compresses the low-pressure, low-temperature refrigerant gas to increase its pressure and temperature, and the high-temperature and high-pressure refrigerant gas then enters the condenser, where the refrigerant releases the heat it carries to the external environment, thereby cooling and liquefying into a liquid. The liquefied refrigerant passes through the expansion valve, the pressure drops suddenly, and it expands and evaporates rapidly. In this process, the refrigerant absorbs a large amount of heat, thereby lowering the temperature of the surrounding environment, thereby lowering the temperature around the drawer box 110 to preserve the raw beef. This is easily understood by those skilled in the art and will not be elaborated here), that is, the raw beef is placed in the storage box of the refrigerator. However, during the transportation or handling of the raw beef, the refrigerator will inevitably shake. At this time, the raw beef will shake due to habituation. The force generated may push the storage box to move, which may cause the storage box to shift, and further may cause the seal to loosen, so that the fresh-keeping effect of raw beef is damaged. Therefore, a fixing mechanism 300 is provided. When the drawer box 110 moves into the storage box 100, the fixing mechanism 300 is squeezed, so that the fixing mechanism 300 elastically moves and engages with the card slot of the drawer box 110, thereby ensuring the stability of the drawer box 110 in the storage box 100, and preventing the drawer box 110 from sliding out of the storage box 100 due to vibration or tilt during handling or transportation. This not only ensures the safety of beef storage, but also effectively prevents the cold air inside the storage box 100 from leaking due to the displacement of the drawer box 110, thereby improving the sealing effect of the device.

[0042] In addition, when the fixing mechanism 300 moves, it can drive the sealing mechanism 200 to fit together, thereby achieving double sealing, further improving the sealing effect of the device;

[0043] Furthermore, when the drawer 110 is pulled out from the storage box 100, the fixing mechanism 300 drives the sealing mechanism 200 to move toward the storage box 100, effectively preventing the sealing mechanism 200 from approaching the outer wall of the storage box 100 and preventing foreign impurities from adhering to the sealing mechanism 200 and affecting the sealing effect of the sealing mechanism 200.

[0044] Considering the need to ensure the sealing effect of the storage box 100, such as Figure 3-Figure 5 As shown, the specific structure of the sealing mechanism 200 is further disclosed. The sealing mechanism 200 includes a No. 1 sealing ring 210 fixedly connected to one side of the drawer 110, a movable plate 211 is slidably connected in the groove of the storage box 100, and a No. 2 sealing ring 212 is fixedly connected to the side of the movable plate 211 close to the No. 1 sealing ring 210. The drawer 110 moves toward the inside of the storage box 100, driving the No. 1 sealing ring 210 to move, so that the No. 1 sealing ring 210 and the No. 2 sealing ring 212 are offset from each other to form a double seal, thereby improving the sealing effect of the storage box 100.

[0045] When the storage box 100 is shaken during handling or transportation, in order to prevent the shaking of the drawer box 110 from affecting the sealing effect of the No. 1 sealing ring 210, as shown in FIG. Figure 4-Figure 6 As shown, the specific structure of the fixing mechanism 300 is further disclosed. The fixing mechanism 300 at least includes two mounting blocks 310 slidably connected to the groove of the storage box 100, and the two mounting blocks 310 are symmetrically arranged on both sides of the drawer 110. One side of the mounting block 310 is fixedly connected to the side of the movable plate 211 away from the second sealing ring 212. A clamping block 311 is rotatably connected inside the rectangular groove of the mounting block 310. Clamping grooves are provided on both sides of the drawer 110, and the clamping grooves are clamped and adapted with the clamping blocks 311. When the mounting block 310 moves, the clamping block 311 is driven to move. When the drawer 110 moves toward the inside of the groove, the drawer 110 is The outer wall of 10 abuts against the block 311, and the force generated drives the block 311 to rotate. When the slot of the drawer box 110 moves to the position of the block 311, the block 311 can be snapped into the slot of the drawer box 110 to fix the drawer box 110, so as to prevent the drawer box 110 from sliding out of the storage box 100 due to vibration or tilt during handling or transportation. This not only ensures the safety of beef storage, but also effectively prevents the shift of the drawer box 110 from causing a gap between the second sealing ring 212 and the first sealing ring 210, which causes the cold air inside the storage box 100 to leak, thereby further improving the sealing effect of the device.

[0046] When the block 311 is squeezed, it rotates so that the block 311 can be reset later. Figure 6 As shown, one side of the block 311 is fixedly connected to a support plate 312, one side of the support plate 312 is fixedly connected to a No. 1 return spring 313, and the side of the No. 1 return spring 313 away from the support plate 312 is fixedly connected to one side of the mounting block 310. When the block 311 is squeezed by the outer wall of the drawer 110, the block 311 is driven to rotate, thereby driving the support plate 312 to rotate. At this time, the No. 1 return spring 313 is deformed by the force. When the block 311 is not squeezed, the support plate 312 can be driven to reset and move under the force of the No. 1 return spring 313 to restore the deformation, thereby driving the block 311 to reset and move.

[0047] After the installation block 310 moves, in order to drive the installation block 310 to reset, as shown in FIG. Figure 5 As shown, the side of the mounting block 310 away from the movable plate 211 is fixedly connected to the limiting rod 320, and the side of the mounting block 310 away from the movable plate 211 is fixedly connected to the No. 2 return spring 321, and the side of the No. 2 return spring 321 away from the mounting block 310 is fixedly connected to the inner wall of the groove of the storage box 100. When the limiting rod 320 is squeezed, the mounting block 310 is driven to move, and the No. 2 return spring 321 is deformed under the force. When the limiting rod 320 is not squeezed, the force of the No. 2 return spring 321 to restore the deformation drives the No. 2 return spring 321 to return and move.

[0048] In order to drive the limiting rod 320 to move, Figure 8-Figure 9 As shown, a limiting groove is provided on one side of the groove of the storage box 100 near the limiting rod 320, and an extrusion block 330 is slidably connected in the limiting groove. A slide groove 331 is obliquely provided on the limiting groove, and the extrusion block 330 is slidably connected to the slide groove 331. When the drawer 110 moves into the groove of the storage box 100, the rear end of the drawer 110 abuts against the extrusion block 330. Since the slide groove 331 is obliquely arranged, as shown in FIG. Fig. 9 As shown by arrow a, the drawer 110 squeezes the squeezing block 330, driving the squeezing block 330 to move along the direction of the slide slot 331, so that the squeezing block 330 moves backward while moving closer to the limit rod 320, so that the squeezing block 330 squeezes the limit rod 320, as shown by arrow b, driving the limit rod 320 to move.

[0049] When the drawer box 110 is pulled out from the storage box 100, it is necessary to first unlock the fixing mechanism 300 for the drawer box 110. Figure 5-Figure 7 As shown, the specific structure of the unlocking mechanism is further disclosed, and the unlocking mechanism includes a pressing rod 340 slidably connected to the inner wall of the storage box 100, one side of the pressing rod 340 passes through the storage box 100, and the other side of the pressing rod 340 is located directly below the support plate 312, and the side of the pressing rod 340 close to the support plate 312 is fixedly connected with a connecting plate 341, and the height value of the connecting plate 341 is greater than the spacing value between the support plate 312 and the rectangular groove. The pressing rod 340 is manually pulled outward to drive the connecting plate 341 to move, so that the connecting plate 341 is against the support plate 312, and the support plate 312 is driven to rotate, thereby driving the card block 311 to rotate, so that the card block 311 is moved out of the card slot of the drawer 110, and the drawer 110 is not clamped and fixed.

[0050] Consider that when the pressing rod 340 is not in use, it is necessary to avoid accidentally touching the pressing rod 340, which may cause the block 311 to deviate. Figure 7 The cam 343 is engaged with the first and second cams 344a and 345b, respectively, and the cam 344b is engaged with the first and second cams 344a and 345b, respectively.

[0051] It is convenient for the drawer 110 to be accurately snapped into the storage box 100. Figure 2 As shown, both sides of the inner wall of the groove of multiple storage boxes 100 are fixedly connected with fixed blocks 120, and both sides of multiple drawers 110 are fixedly connected with sliders 121, and the sliders 121 are slidably connected to the fixed blocks 120. The sliders 121 and the fixed blocks 120 are provided to provide guidance for the movement of the drawers 110.

[0052] Working principle: After the packaged raw beef is placed in the drawer 110, the drawer 110 is manually pushed. When the drawer 110 gradually moves toward the inside of the groove of the storage box 100, the rear end of the drawer 110 abuts against the squeezing block 330. Since the slide slot 331 is inclined, the drawer 110 squeezes the squeezing block 330, driving the squeezing block 330 to move along the direction of the slide slot 331, so that the squeezing block 330 moves backward while moving close to the limit rod 320, so that the squeezing block 330 squeezes the limit rod 320, driving the limit rod 320 to move, thereby driving the installation block 310 to move, and then driving the moving plate 211 to move. The movement of the moving plate 211 drives the No. 2 sealing ring 212 to move, so that the No. 2 sealing ring 212 abuts against the No. 1 sealing ring 210, forming a double seal, thereby improving the sealing effect;

[0053] When the mounting block 310 moves, the clamping block 311 is driven to move. When the drawer box 110 moves toward the inside of the groove, the clamping block 311 is clamped into the clamping groove of the drawer box 110 to fix the drawer box 110, so as to prevent the drawer box 110 from sliding out of the storage box 100 due to vibration or tilting when the device is carried or adjusted. This not only ensures the safety of beef storage, but also effectively prevents the gap between the second sealing ring 212 and the first sealing ring 210 caused by the displacement of the drawer box 110, so as to leak the cold air inside the storage box 100, thereby further improving the sealing effect of the device;

[0054] When it is necessary to draw the drawer 110 from the storage box 100, first pull the positioning rod 343 so that the positioning rod 343 does not limit the pressing rod 340. Then, manually pull the pressing rod 340 outward to drive the connecting plate 341 to move, so that the connecting plate 341 is against the support plate 312, driving the support plate 312 to rotate. At this time, the No. 1 return spring 313 is deformed, and the support plate 312 moves to drive the card block 311 to rotate, so that the card block 311 moves out of the card slot of the drawer 110 without clamping and fixing the drawer 110. Then, manually loosen the positioning rod 343 so that the positioning rod 343 is inserted into the through hole of the pressing rod 340. The same as the above operation, unlock the card block on the other side of the drawer 110 again. 311 fixes the card slot of the drawer box 110, and then manually pulls the drawer box 110 out of the storage box 100, places the food in the drawer box 110, and then pulls the positioning rod 343 out of the pressing rod 340 again. At this time, the positioning rod 343 does not limit the pressing rod 340, and under the force of the No. 1 return spring 313 to restore the deformation, the card block 311 is driven to reset, and under the force of the No. 2 return spring 321 to restore the deformation, the mounting block 310, the moving plate 211 and the No. 2 sealing ring 212 are driven to move toward the inside of the storage box 100, effectively preventing the No. 2 sealing ring 212 from approaching the outer wall of the storage box 100, and external impurities adhere to the No. 2 sealing ring 212, affecting the sealing effect of the No. 2 sealing ring 212.

[0055] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A method for preserving raw beef, characterized in that: The following steps are involved: S1, by pressing the unlocking mechanism, the fixing mechanism (300) is released from the storage mechanism, and the storage mechanism is opened; S2. Place the food in a plurality of storage mechanisms by category, and then close the storage mechanisms. When the storage mechanisms are closed, the fixing mechanism (300) is driven to clamp and fix the storage mechanisms, wherein: The storage mechanism comprises a storage box (100), wherein a plurality of grooves of the storage box (100) are all slidably connected with drawer boxes (110), and a sealing mechanism (200) and a fixing mechanism (300) are provided at the grooves of the storage box (100); The fixing mechanism (300) elastically moves to fix or release the drawer box (110); when the fixing mechanism (300) fixes the drawer box (110), it drives the sealing mechanism (200) to move to achieve double sealing; when the fixing mechanism (300) releases the fixing, the fixing mechanism (300) drives the sealing mechanism (200) to contract.

2. The method for preserving raw beef according to claim 1, characterized in that: The sealing mechanism (200) comprises a first sealing ring (210) fixedly connected to one side of the drawer box (110), a movable plate (211) slidably connected in the groove of the storage box (100), and a second sealing ring (212) fixedly connected to the side of the movable plate (211) close to the first sealing ring (210).

3. The method for preserving raw beef according to claim 2, characterized in that: The fixing mechanism (300) comprises at least two mounting blocks (310) slidably connected in the groove of the storage box (100), and the two mounting blocks (310) are symmetrically arranged on both sides of the drawer box (110), one side of the mounting block (310) is fixedly connected to the side of the movable plate (211) away from the second sealing ring (212), a clamping block (311) is rotatably connected inside the rectangular groove of the mounting block (310), and clamping grooves are provided on both sides of the drawer box (110), and the clamping grooves are clamped and adapted to the clamping blocks (311).

4. The method for preserving raw beef according to claim 3, characterized in that: One side of the clamping block (311) is fixedly connected to a support plate (312), one side of the support plate (312) is fixedly connected to a No. 1 return spring (313), and a side of the No. 1 return spring (313) away from the support plate (312) is fixedly connected to one side of the mounting block (310).

5. The method for preserving raw beef according to claim 3, characterized in that: The side of the mounting block (310) away from the movable plate (211) is fixedly connected to a limiting rod (320), the side of the mounting block (310) away from the movable plate (211) is fixedly connected to a No. 2 return spring (321), and the side of the No. 2 return spring (321) away from the mounting block (310) is fixedly connected to the inner wall of the groove of the storage box (100).

6. The method for preserving raw beef according to claim 5, characterized in that: A limiting groove is provided on one side of the groove of the storage box (100) close to the limiting rod (320), an extrusion block (330) is slidably connected in the limiting groove, a sliding groove (331) is obliquely provided on the limiting groove, and the extrusion block (330) is slidably connected to the sliding groove (331).

7. The method for preserving raw beef according to claim 4, characterized in that: The unlocking mechanism comprises a pressing rod (340) slidably connected to the inner wall of the storage box (100), one side of the pressing rod (340) passes through the storage box (100), and the other side of the pressing rod (340) is located directly below the support plate (312), and a connecting plate (341) is fixedly connected to one side of the pressing rod (340) close to the support plate (312), and the height value of the connecting plate (341) is greater than the spacing value between the support plate (312) and the rectangular groove.

8. The method for preserving raw beef according to claim 7, characterized in that: The outer wall of the storage box (100) is fixedly connected with a fixing ring (342), and the pressing rod (340) is located inside the fixing ring (342); the connecting plate (341) is slidably connected with a positioning rod (343), and one side of the positioning rod (343) passes through the through hole of the fixing ring (342) and the pressing rod (340); the outer wall of the fixing ring (342) is fixedly connected with a No. 3 return spring (344), and the side of the No. 3 return spring (344) away from the fixing ring (342) is fixedly connected to one side of the positioning rod (343).

9. The method for preserving raw beef according to claim 1, characterized in that: Both sides of the inner walls of the grooves of the plurality of storage boxes (100) are fixedly connected with fixed blocks (120), and both sides of the plurality of drawer boxes (110) are fixedly connected with sliders (121), and the sliders (121) are slidably connected to the fixed blocks (120).

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