Cold chain transport case for milk transport

Abstract

This application discloses a cold chain transport box for transporting milk, comprising a box body and a lid covering the top of the box body. The box body includes a base plate and side walls fixed to the base plate. A milk storage box is disposed inside the box body. The milk storage box includes a buffer seat and a storage frame fixed to the buffer seat. The buffer seat includes a base that is freely placed on the base plate and a buffer spring disposed between the base and the side wall. The storage frame is fixed to the upper surface of the base, and a limit plate is fixed to the top of the storage frame. A vacuum cup made of rubber is arranged inside the storage frame. The vacuum cup is fixed to the base, and a limit hole is provided on the limit plate. Milk bottles can press against the vacuum cup through the limit hole and be attracted to the vacuum cup. This application uses a buffer spring to buffer the horizontal sway of the cold chain transport box, uses the elastic deformation of the vacuum cup to buffer the vertical bounce of the milk bottle, and uses the vacuum cup to attract the milk bottle to the base, ensuring the safety of the milk bottle.

Description

Technical Field

[0001] This utility model relates to a cold chain transport box for milk transportation. Background Technology

[0002] With the continuous expansion of online transactions, the cold chain transportation of fresh products, processed foods, and various dairy products has also expanded accordingly. In cold chain transportation, products need to be kept within a certain temperature control range to ensure product quality. Among the aforementioned products, packaged fresh milk and bottled dairy products such as yogurt have a very short shelf life and need to be transported to their destination stably and quickly under low-temperature conditions.

[0003] Although cardboard boxes are now widely used as containers for dairy products, glass bottles are still widely used for dairy products because they are stable, do not react chemically with milk, ensure the stability of milk's composition, and better preserve its various nutrients and fresh taste.

[0004] To maintain stability during refrigerated transport, bottled dairy products generally require transport boxes. However, existing transport boxes have a simple internal structure, resulting in unstable placement of milk bottles. They must be completely filled, and the inability to effectively secure the bottles compromises their stability during transport. Furthermore, during bumpy transport, the bottles are prone to breakage due to collisions or falling off the transport equipment, making existing transport boxes unsuitable for the stable transport of bottled dairy products. Utility Model Content

[0005] To address the problems of broken or spilled bottled dairy products during transportation due to collisions, this application proposes a cold chain transport box for milk transportation. The box includes a box body and a lid covering the top of the box body. The box body includes a base plate and side walls fixed to the base plate. A milk storage box is disposed inside the box body. The milk storage box includes a buffer seat and a storage frame fixed to the buffer seat. The buffer seat includes a base that rests freely on the base plate and a buffer spring disposed between the base and the side walls. The storage frame is fixed to the upper surface of the base, and a limit plate is fixed to the top of the storage frame.

[0006] Several vacuum cups made of rubber are arranged inside the storage box. The lower end of each vacuum cup is fixed to the base. Corresponding to each vacuum cup, a limiting hole is provided on the limiting plate. The milk bottle can press against the vacuum cup through the limiting hole and be attracted to the vacuum cup.

[0007] When filling the cold chain transport box with milk bottles, the bottles are inserted into the storage box through the limiting hole, ensuring a tight seal between the bottom of the bottle and the vacuum cup. Pressing the bottle then expels air from the vacuum cup, creating a vacuum that holds the bottle in place. The top of the bottle remains within the limiting hole to prevent collisions between adjacent bottles. To remove the bottles from the cold chain transport box, outside air is introduced into the vacuum cup to eliminate the vacuum, and the bottles are then pulled out of the storage box.

[0008] When the cold chain transport box vibrates due to bumps during transportation, it will cause the milk storage box to swing horizontally, bounce vertically, or both simultaneously. When it swings horizontally, the base of the milk storage box compresses the buffer spring, which cushions the impact and reduces the amplitude of the swing. When the cold chain transport box bounces vertically, the vacuum cups hold the milk bottles on the base, and the elasticity of the vacuum cups cushions the impact of the vertical movement. Because the upper part of the milk bottle is confined within the limiting hole, and the lower part is held by the vacuum cups, collisions between the milk bottles are effectively avoided, ensuring the safety of the milk bottles.

[0009] Because the vacuum cup can also deform in the vertical direction, it reduces the amplitude of the milk bottle's bounce caused by vibration, thus giving the vacuum cup the dual function of fixing the milk bottle and reducing the amplitude of the milk bottle's bounce.

[0010] Specifically, to improve the stability of the milk storage box in the cold chain transport box, several damping holes are evenly distributed around the base. A piston is slidably installed within each damping hole, and a buffer spring is installed at both ends of the piston. The outer buffer spring extends outward from the damping hole and inserts into a limiting hole on the side wall. The buffer springs are compression springs; when the base is stationary, all buffer springs are in a compressed state. When the cold chain transport box vibrates due to road bumps, the buffer springs drive the piston to reciprocate within the damping hole, thereby compressing the air between the piston and the bottom of the damping hole, converting the external impact into heat energy, and reducing the swaying amplitude of the milk storage box. Because the outer buffer spring is inserted into the limiting hole on the side wall, the limiting effect of the limiting hole reduces the amplitude of the milk storage box's vertical movement.

[0011] Specifically, the vacuum cup includes a cylindrical body with an inner cavity forming a vacuum chamber. The body extends vertically, with its lower end forming a connecting end and its upper end forming a bottle holder. The vacuum cup is sealed and mounted on the base via the connecting end, allowing the bottom of the milk bottle to be pressed tightly against the bottle holder. This sealing contact between the milk bottle and the bottle holder creates a sealed cavity within the vacuum cup, enabling a vacuum to be successfully generated inside.

[0012] Furthermore, to improve the seal between the vacuum cup and the milk bottle, the bottle holder has a receiving cavity for accommodating the bottom of the milk bottle. This receiving cavity is formed at the upper end of the inner cavity of the main body and has an annular stepped surface and an inner peripheral wall. When the bottom of the milk bottle is inserted into the receiving cavity, the bottom surface of the milk bottle can press against the stepped surface, and the outer peripheral surface of the bottom of the milk bottle makes sealing contact with the inner peripheral wall. By utilizing the sealing contact between the stepped surface and the inner peripheral wall with the bottom and outer peripheral surfaces of the milk bottle, a double sealing effect is formed.

[0013] Furthermore, in order to enable the vacuum cup to undergo more regular deformation during compression to expel internal air, the center of the body is radially recessed to form a deformation groove.

[0014] Furthermore, for ease of operation, a one-way valve is installed on the main body, which only allows the air inside the vacuum cup to flow outward.

[0015] Furthermore, to facilitate the release of vacuum inside the vacuum cup, an air passage is provided in the base. One end of the air passage is closed, and the other end of the air passage passes through the base and is fitted with an air valve. Corresponding to each vacuum cup, a connecting hole is provided in the base, and the two ends of the connecting hole are respectively connected to the air passage and the inner cavity of the vacuum cup.

[0016] Furthermore, the lid includes an outer frame and a metal support plate disposed on the lower side of the outer frame. The metal support plate is recessed downwards to form a refrigerant cavity. A door for closing the refrigerant cavity is installed at the edge of the refrigerant cavity, which is used to place ice packs. This application places ice packs on top of the cold chain transport box, utilizing the downward flow of cold air to improve the temperature uniformity inside the cold chain transport box.

[0017] Furthermore, a rubber sealing ring is embedded in the inner wall of the limiting hole. The elasticity of the rubber sealing ring ensures that the upper end of the milk bottle can be stably held within the limiting hole, preventing the milk bottle from colliding with the inner wall of the limiting hole due to shaking. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of an embodiment of this application.

[0019] Figure 2 yes Figure 1 A view from the center AA direction.

[0020] Figure 3 yes Figure 1 Enlarged view of section B.

[0021] Figure 4 This is a schematic diagram of the structure of a vacuum cup. Detailed Implementation

[0022] See Figures 1-3 A cold chain transport box for milk transportation includes a box body 10 and a box lid 13 covering the top of the box body 10. The box body 10 includes a bottom plate 12 and side walls 11 fixed to the bottom plate, and the box body is square. In this embodiment, the box lid 13 includes an outer frame 130 and a metal support plate 131 disposed on the lower side of the outer frame. The metal support plate 131 is recessed downward to form a refrigerant cavity 132. A hatch 133 for closing the refrigerant cavity is installed at the edge of the refrigerant cavity. The hatch is used to seal the refrigerant cavity, which is used to place ice packs (not shown in the accompanying drawings).

[0023] One side of the outer frame is hinged to the top of the box, so that the box lid is hinged to the top of the box. A latch 21 is installed at the end of the outer frame away from the hinge, and a lock lug 22 that matches the latch is installed on the top of the box. The lock lug 22 is specifically installed on the top of the side wall 11.

[0024] One side of the hatch is hinged to the edge of the refrigerant chamber, and the opposite side is fixed to the edge of the refrigerant chamber by a spring lock 14. A latch 146 is provided on the edge of the hatch, and a latch 142 is placed in the latch. A push ring 145 protrudes radially outward on the latch. A push spring 147 is installed inside the push ring, with its two ends abutting against the bottom of the latch and the push ring, respectively. The end of the latch away from the spring is a hemispherical ball head, and an externally threaded nut 148 is screwed onto the outer end of the latch. A lock hole 141 is provided on the outer frame, opposite to the latch. Under the push of the push spring, the ball head can extend outward through the center hole of the externally threaded nut and into the lock hole. The spring lock 14 is a mature existing technology and will not be described further. A handle 144 is installed on the hatch for easy access.

[0025] A milk storage box 30 is provided inside the box; the milk storage box 30 includes a buffer seat 40 and a storage frame 31 fixed on the buffer seat. The buffer seat 40 includes a base that is freely placed on the bottom plate and a buffer spring disposed between the base and the side wall.

[0026] Specifically, in this embodiment, the base 41 is a square steel block with two horizontally extending damping holes 42 on each of its four sides, meaning that a plurality of damping holes are evenly distributed around the base. Corresponding to each damping hole, a limiting hole is provided on the side wall of the housing. A piston 45 is slidably disposed within each damping hole 42, and a buffer spring is provided at both ends of the piston. For ease of description, the two buffer springs are referred to as the first buffer spring 43 and the second buffer spring 46, respectively. The second buffer spring 46 is located between the piston 45 and the bottom surface of the limiting hole, while the first buffer spring 43 is located outside the damping hole, extending outward from the damping hole and then inserted into the limiting hole. Each buffer spring is a compression spring, and when the base is stationary, each buffer spring is in a compressed state. In this embodiment, for ease of manufacturing, the depth and diameter of each damping hole are the same, and the length and type of the buffer springs are the same. Specifically, in this embodiment, the buffer springs are helical compression springs.

[0027] When the cold chain transport box vibrates due to road bumps, the buffer spring drives the piston to reciprocate within the damping hole, thereby compressing the air between the piston and the bottom of the damping hole, converting the external impact into heat energy, and reducing the swaying amplitude of the milk storage box. Since the first buffer spring is inserted into the limiting hole in the side wall, the limiting effect of the limiting hole reduces the amplitude of the milk storage box's vertical bouncing.

[0028] To improve the flexibility of the base when moving, ball bearings 44 are installed on the base plate, and the base is freely supported on the ball bearings.

[0029] The storage frame 31 is made of steel and is welded to the upper surface of the base. A limiting plate 32 is bolted to the top of the storage frame 31.

[0030] The storage compartment contains 16 vacuum-sealed rubber cups 50, arranged in a matrix of 4 rows and 4 columns. (See also...) Figure 4 In this embodiment, each vacuum cup includes a cylindrical body 51, the inner cavity of which is formed as a vacuum cavity 59. The body extends vertically, the lower end of which is formed as a connecting end, and the connecting end extends radially outward to form a flange 52. The upper end of the body is formed as a bottle holder 54. The vacuum cup is sealed on the base via the connecting end, and the bottom of the milk bottle 90 can be sealed against the bottle holder.

[0031] In this embodiment, an adhesive is used to directly bond the flange at the lower end of the vacuum cup to the base, thereby sealing the vacuum cup securely to the base. It can be understood that in another embodiment, a flange can be fitted onto the vacuum cup, with the flange pressing against the flange, and then bolts are passed through the flange and screwed onto the base, thus sealing the vacuum cup onto the base.

[0032] The bottle holder 54 has a receiving cavity 55 for accommodating the bottom of a milk bottle. The receiving cavity 55 is formed from the upper end of the inner cavity of the body. The receiving cavity has an annular stepped surface 551 and an inner peripheral wall 552. When the bottom of the milk bottle is inserted into the receiving cavity 55, the bottom surface of the milk bottle can press against the stepped surface 551, and the outer peripheral surface of the bottom of the milk bottle is in sealed contact with the inner peripheral wall.

[0033] To facilitate the compression and deformation of the vacuum cup, a deformation groove 53 is formed by a radial inward indentation in the middle of the main body. When the milk bottle is pressed down or a vacuum is drawn into the inner cavity of the genuine leather cup, the main body can be bent based on the deformation groove, preventing the vacuum cup from bending irregularly. For ease of operation, a one-way valve 56 is installed on the main body. This one-way valve only allows air inside the vacuum cup to flow outward. Using this one-way valve, a vacuum can be created in the inner cavity of the vacuum cup by directly pressing the milk bottle, causing the milk bottle to adhere to the vacuum cup.

[0034] To facilitate the release of vacuum inside the vacuum cup, an air passage 61 is provided inside the base. One end of the air passage 61 is closed, and the other end of the air passage 61 passes through the base and is fitted with an air valve 64. Corresponding to each vacuum cup 50, a connecting hole 62 is provided inside the base, and the two ends of the connecting hole connect the air passage 61 and the inner cavity of the vacuum cup, respectively.

[0035] To facilitate operation of the air valve, a bellows 63 is installed at one end of the air passage extending from the base, and a short pipe 65 is installed at the other end of the bellows 63. The air valve 64 is installed after the short pipe 65 extends out of the side wall of the housing, thus allowing the air valve to be opened and closed from outside the housing. This air passage can be used to evacuate the vacuum cup, or to allow outside air to enter the vacuum cup to eliminate the vacuum inside the vacuum cup.

[0036] For each vacuum cup 50, a limiting hole 33 is provided on the limiting plate 32, through which the milk bottle can be pressed against the vacuum cup and adsorbed onto it. To improve the stability of the milk bottle, a rubber sealing ring 34 is embedded in the inner wall of the limiting hole.

[0037] It is understood that in another embodiment, a one-way valve may also be required, and an external vacuum device may be used to evacuate the vacuum cup through the air passage 61.

[0038] When loading milk bottles 90 into the cold chain transport box, the air valve must first be closed. Then, insert the milk bottle 90 into the milk storage box through the limiting hole 33, ensuring the bottom of the bottle is inserted into the receiving cavity 55. Press the milk bottle to expel air from the vacuum cup through the one-way valve. Utilizing the elasticity of the vacuum cup, a vacuum is created inside, adhering the milk bottle to the vacuum cup. The upper end of the milk bottle remains within the limiting hole 33, and a rubber sealing ring is used to restrain the upper end of the milk bottle to prevent collisions between adjacent milk bottles. When it is necessary to remove the milk bottle from the cold chain transport box, the air valve must first be opened to allow outside air to enter the vacuum cup to eliminate the vacuum. Then, the milk bottle is pulled out of the milk storage box.

[0039] When no one-way valve is installed, and a milk bottle is inserted into each vacuum cup, a vacuum device is used to evacuate the vacuum cup through the air passage.

[0040] When the cold chain transport box shakes due to bumps during transportation, the milk storage box will sway horizontally, bounce vertically, or both simultaneously. When it sways horizontally, the base 41 will also sway horizontally, compressing or stretching the buffer spring, which in turn moves the piston 45 within the damping hole. The air between the piston and the bottom of the damping hole will be compressed and heated, consuming the energy from the external impact and reducing the swaying amplitude of the milk storage box. When the cold chain transport box bounces vertically, the vacuum cup keeps the milk bottle on the base, and the elasticity of the vacuum cup cushions the impact from the vertical bounce. Because the upper end of the milk bottle is confined within the limiting hole 33 and restrained by the rubber sealing ring, and the lower end is adhered to the vacuum cup, collisions between milk bottles are effectively avoided, ensuring the safety of the milk bottles.

Claims

1. A cold chain shipping case for shipping milk, characterized by, The device includes a box body and a lid that covers the top of the box body. The box body includes a base plate and side walls fixed to the base plate. A milk storage box is disposed inside the box body. The milk storage box includes a cushioning seat and a storage frame fixed to the cushioning seat. The cushioning seat includes a base that is freely placed on the base plate and a cushioning spring disposed between the base and the side wall. The storage frame is fixed to the upper surface of the base, and a limit plate is fixed to the top of the storage frame. Several vacuum cups made of rubber are arranged inside the storage box. The lower end of each vacuum cup is fixed to the base. Corresponding to each vacuum cup, a limiting hole is provided on the limiting plate. The milk bottle can press against the vacuum cup through the limiting hole and be attracted to the vacuum cup.

2. The cold chain shipping box for shipping milk of claim 1, wherein, Several damping holes are evenly distributed around the base. A piston is slidably installed in each damping hole. A buffer spring is installed at both ends of the piston. The buffer spring located on the outside extends out of the damping hole and is inserted into the limiting hole on the side wall. The buffer spring is a compression spring. When the base is in a stationary state, all buffer springs are in a compressed state.

3. The cold chain shipping box for shipping milk of claim 1, wherein, The vacuum cup includes a cylindrical body with an inner cavity forming a vacuum chamber. The body extends vertically, with a connecting end at the lower end and a bottle holder at the upper end. The vacuum cup is sealed on the base via the connecting end, and the bottom of the milk bottle can be sealed against the bottle holder.

4. The cold chain shipping box for shipping milk of claim 3, wherein, The bottle holder has a receiving cavity for accommodating the bottom of a milk bottle, which is formed at the upper end of the inner cavity of the body. The receiving cavity has an annular stepped surface and an inner peripheral wall. When the bottom of the milk bottle is inserted into the receiving cavity, the bottom surface of the milk bottle can press against the stepped surface, and the outer peripheral surface of the bottom of the milk bottle is in sealed contact with the inner peripheral wall.

5. The cold chain transport box for milk transportation according to claim 3, characterized in that, The middle part of the body is concave inward along the radial direction to form a deformation groove.

6. The cold chain shipping box for shipping milk of claim 3, wherein, A one-way valve is installed on the main body, which can only allow air inside the vacuum cup to flow outward.

7. The cold chain shipping box for shipping milk of claim 3, wherein, An air passage is provided inside the base. One end of the air passage is closed, and the other end of the air passage passes through the base and is fitted with an air valve. Corresponding to each vacuum cup, a connecting hole is provided inside the base. The two ends of the connecting hole are respectively connected to the air passage and the inner cavity of the vacuum cup.

8. The cold chain shipping box for shipping milk of claim 1, wherein, The lid includes an outer frame and a metal support plate located on the lower side of the outer frame. The metal support plate is recessed downward to form a refrigerant cavity. A door for closing the refrigerant cavity is installed at the edge of the refrigerant cavity, which is used to place ice packs.

9. The cold chain shipping box for shipping milk of claim 1, wherein, A rubber sealing ring is embedded in the inner wall of the limiting hole.

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