Negative-pressure dry ice storage box

Abstract

The utility model discloses a negative pressure dry ice storage box which comprises a protective shell, a shell is installed in the protective shell, an air bag is installed between the shell and the protective shell, an exhaust mechanism is fixedly connected to the inner bottom of the shell and comprises an air pump, the air pump is installed at the inner bottom of the shell, and the side wall of the exhaust mechanism is fixedly connected with an air suction pipe. The bottom of the air pump is fixedly connected with an exhaust pipe, the end, away from the air pump, of the exhaust pipe is fixedly connected with a one-way valve, the interior of the one-way valve is fixedly connected with an air inlet pipe, the end, away from the one-way valve, of the air inlet pipe is fixedly connected with the side wall of the air bag, the other side wall of the air bag is fixedly connected with an air outlet pipe, and a pressure valve is installed in the air outlet pipe. The dry ice storage box is reasonable in structure, air in the box body is pumped out and exhausted into the air bag, so that when the dry ice storage box is moved, taken and placed, internal negative pressure is kept stable, generated vibration is dissipated due to buffering of the air bag, and damage caused by moving or placing is further reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of edible gas, in particular to a negative pressure dry ice storage box. Background Art

[0002] Dry ice is a solid gas, the main component of which is carbon dioxide. Dry ice is widely used in modern life, especially in the food industry, where a large amount of dry ice is needed to preserve food and prevent it from spoiling and deteriorating. This part of dry ice is also called edible dry ice. Since dry ice has a low vaporization temperature and evaporates quickly, an insulated box is used in the prior art to store dry ice. The insulated box generally includes a box body, an inner cover, an outer cover and a handle. The box body has a heat preservation and heat insulation function. Dry ice can be stored in the box body. The box body has an access port for storing and accessing dry ice. The inner cover is detachably fitted on the access port. A pressure relief hole for releasing pressure is provided on the inner cover. The outer cover is covered on the outside of the inner cover, and the handle is fixed to the outer wall of the box body. This insulated bucket can store dry ice for a long time. Since the pressure relief hole is provided, the pressure in the box body can be released in time through the pressure relief hole, which provides great convenience for the storage of dry ice.

[0003] When applying for this utility model, the applicant found through search that a Chinese patent disclosed "a shock-absorbing dry ice storage barrel", and its application number is "202020177740.3". This patent mainly provides a shock-absorbing space between the bottom of the protective shell and the barrel body, and multiple shock-absorbing springs are installed in the shock-absorbing space. One end of the shock-absorbing spring is against the bottom of the lower protective shell, and the other end is against the bottom of the barrel body. When the dry ice storage barrel of this application is moved or placed, the vibration generated by the movement or placement is dissipated due to the vibration of the shock-absorbing spring, thereby further reducing the damage caused by the movement or placement.

[0004] The above-mentioned shock-absorbing dry ice storage barrel is provided with a shock-absorbing space, and a plurality of shock-absorbing springs are installed in the shock-absorbing space for shock absorption. However, since the shock-absorbing springs will generate elastic force after being compressed, the shock-absorbing and buffering effect is poor, resulting in that the shock-absorbing and buffering effect cannot be better played when the dry ice storage barrel is moved or placed. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes a negative pressure dry ice storage box.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a negative pressure dry ice storage box, comprising a protective shell, an outer shell is installed inside the protective shell, an air bag is installed between the outer shell and the protective shell, the inner bottom of the outer shell is fixedly connected to an exhaust mechanism, the exhaust mechanism comprises an air pump, the air pump is installed on the inner bottom of the outer shell, the side wall of the exhaust mechanism is fixedly connected to an air intake pipe, the bottom of the air pump is fixedly connected to an exhaust pipe, the exhaust pipe is fixedly connected to the inside of the exhaust pipe away from the air pump with a one-way valve, one end of the one-way valve is fixedly connected to an air inlet pipe, one end of the air inlet pipe away from the one-way valve is fixedly connected to the side wall of the air bag, the other side wall of the air bag is fixedly connected to an air outlet pipe, and a pressure valve is installed inside the air outlet pipe.

[0007] As a further description of the above technical solution:

[0008] The top of the shell is movably connected to a box cover, the upper surface of the box cover is fixedly connected to a handle, and the size of the box cover is equal to that of the shell.

[0009] As a further description of the above technical solution:

[0010] The lower surface of the box cover is provided with a bulge, the top of the shell is provided with a groove, and the bulge is located inside the groove.

[0011] As a further description of the above technical solution:

[0012] The inner wall of the shell is fixedly connected with a breathable plate, and the breathable plate is located above the exhaust mechanism.

[0013] As a further description of the above technical solution:

[0014] The inner wall of the shell is fixedly connected to the heat-insulating layer, and the heat-insulating layer is located above the air-permeable plate.

[0015] As a further description of the above technical solution:

[0016] The four corners of the bottom of the protective shell are fixedly connected with rollers, and the number of the rollers is four.

[0017] As a further description of the above technical solution:

[0018] The outer walls on the left and right sides of the shell are both fixedly connected with a fixing block, and the outer walls on the left and right sides of the protective shell are both provided with a limiting groove, and the fixing block is located inside the limiting groove.

[0019] The utility model has the following beneficial effects:

[0020] 1. Compared with the prior art, this negative pressure dry ice storage box is equipped with an exhaust mechanism and an air bag. When in use, the air pump draws out the gas inside the box through the suction pipe, and then discharges it into the intake pipe through the exhaust pipe. A one-way valve is installed on the intake pipe to prevent gas backflow, so that the negative pressure inside the box is kept stable, and the gas enters the air bag through the intake pipe to inflate the air bag. When encountering vibration, relative displacement will occur between the protective shell and the outer shell, squeezing the air bag. At this time, the pressurized gas inside the air bag will be discharged from the exhaust pipe, thereby reducing vibration and preventing the dry ice stored in the outer shell from shaking. Compared with the existing shock-absorbing dry ice storage barrel, the shock-absorbing spring will generate elastic force after compression, resulting in poor shock-absorbing and buffering effect, resulting in the inability to play a good shock-absorbing and buffering role when the dry ice storage barrel is moved or placed. Under the action of the air bag, this negative pressure dry ice storage box can produce a shock-absorbing and buffering effect on the box, reducing the damage caused by moving or placing.

[0021] 2. Compared with the prior art, this negative pressure dry ice storage box has fixed blocks on both sides of the box body. When in use, the fixed blocks are located in the limit grooves on both sides of the protective shell, so that when the device is moved or placed, the box body and the protective shell remain stable, avoiding the occurrence of phenomena such as tipping over or displacement of the box body, and further reducing the damage caused by movement or placement. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall structure of a negative pressure dry ice storage box proposed by the utility model;

[0023] Figure 2 This is a front view of the overall structure of a negative pressure dry ice storage box proposed by the utility model;

[0024] Figure 3 This is a front view of the internal structure of a negative pressure dry ice storage box proposed by the utility model;

[0025] Figure 4 The utility model is a cross-sectional view of the internal structure of a negative pressure dry ice storage box.

[0026] Legend:

[0027] 1. Shell; 2. Breathable plate; 3. Exhaust mechanism; 301. Air pump; 302. Intake pipe; 303. Exhaust pipe; 4. Fixing block; 5. Limiting groove; 6. Protective shell; 7. Intake pipe; 8. One-way valve; 9. Air bag; 10. Exhaust pipe; 11. Pressure valve; 12. Roller; 13. Box cover; 14. Bump; 15. Groove; 16. Insulation layer; 17. Handle. DETAILED DESCRIPTION

[0028] Reference Figure 1-4The utility model provides a negative pressure dry ice storage box: comprising a protective shell 6, an outer shell 1 is installed inside the protective shell 6, the outer shell 1 can move vertically in the protective shell 6, an air bag 9 is installed between the outer shell 1 and the protective shell 6, the air bag 9 plays a shock absorbing and buffering role for the outer shell 1, an exhaust mechanism 3 is fixedly connected to the inner bottom of the outer shell 1, the exhaust mechanism 3 maintains a negative pressure in the outer shell 1 by exhausting air, the exhaust mechanism 3 includes an air pump 301, the side wall of the exhaust mechanism 3 is fixedly connected to the suction pipe 302, and the bottom of the air pump 301 is fixedly connected to the exhaust pipe 30 3. One end of the exhaust pipe 303 away from the air pump 301 is fixedly connected with a one-way valve 8, which controls the one-way movement of the gas. One end of the one-way valve 8 is fixedly connected with an intake pipe 7, and one end of the intake pipe 7 away from the one-way valve 8 is fixedly connected to the side wall of the airbag 9. The other side wall of the airbag 9 is fixedly connected to the outlet pipe 10. A pressure valve 11 is installed inside the outlet pipe 10. The pressure valve 11 is a spring-loaded regulating valve with an elastic element in its structure. When the internal pressure of the airbag 9 reaches a certain level, the elastic element will be pushed open to discharge part of the gas inside the airbag 9.

[0029] The top of the shell 1 is movably connected to a box cover 13, and a handle 17 is fixedly connected to the upper surface of the box cover 13 to facilitate opening of the box cover. The size of the box cover 13 is equal to that of the shell 1. A protrusion 14 is provided on the lower surface of the box cover 13, and a groove 15 is provided on the top of the shell 1. The protrusion 14 is inside the groove 15 to keep the interior of the box sealed.

[0030] An air permeable plate 2 is fixedly connected to the inner wall of the outer shell 1 to facilitate the exhaust of the box body by the exhaust mechanism. The air permeable plate 2 is located above the exhaust mechanism 3. An insulation layer 16 is installed above the air permeable plate 2. The outer surface of the insulation layer 16 is fixedly connected to the inner wall of the outer shell 1, thereby enhancing the insulation effect inside the box body.

[0031] The four corners of the bottom of the protective shell 6 are fixedly connected with rollers 12, and there are four rollers 12 to facilitate the movement and transfer of the box. The left and right outer walls of the outer shell 1 are fixedly connected with a fixed block 4, and the left and right outer walls of the protective shell 6 are each provided with a limiting groove 5. The two fixed blocks 4 are located inside the two limiting grooves 5, which avoids the occurrence of the box body tipping over or offsetting, and enhances the stability of the storage box.

[0032] Working principle: When in use, the air pump 301 extracts part of the gas inside the box through the suction pipe 302, and then discharges it into the intake pipe 7 through the exhaust pipe 303. The intake pipe 7 is equipped with a one-way valve 8 to prevent gas backflow, so that the negative pressure inside the box remains stable. The gas enters the airbag through the intake pipe 7 to inflate the airbag. When encountering vibration, relative displacement will occur between the protective shell 6 and the outer shell 1, squeezing the airbag 9. At this time, the pressurized gas inside the airbag 9 will be discharged from the outlet pipe 10.

[0033] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A negative pressure dry ice storage box, comprising a protective shell (6), characterized in that: An outer shell (1) is installed inside the protective shell (6), an air bag (9) is installed between the outer shell (1) and the protective shell (6), an exhaust mechanism (3) is fixedly connected to the inner bottom of the outer shell (1), the exhaust mechanism (3) comprises an air pump (301), the air pump (301) is installed on the inner bottom of the outer shell (1), the side wall of the exhaust mechanism (3) is fixedly connected to an air intake pipe (302), the bottom of the air pump (301) is fixedly connected to an exhaust pipe (303), one end of the exhaust pipe (303) away from the air pump (301) is fixedly connected to a one-way valve (8), the inside of the one-way valve (8) is fixedly connected to an air intake pipe (7), one end of the air intake pipe (7) away from the one-way valve (8) is fixedly connected to the side wall of the air bag (9), the other side wall of the air bag (9) is fixedly connected to an air outlet pipe (10), and a pressure valve (11) is installed inside the air outlet pipe (10).

2. The negative pressure dry ice storage box according to claim 1, characterized in that: The top of the outer shell (1) is movably connected to a box cover (13); a handle (17) is fixedly connected to the upper surface of the box cover (13); and the size of the box cover (13) is equal to that of the outer shell (1).

3. The negative pressure dry ice storage box according to claim 2, characterized in that: The lower surface of the box cover (13) is provided with a bulge (14), the top of the housing (1) is provided with a groove (15), and the bulge (14) is inside the groove (15).

4. The negative pressure dry ice storage box according to claim 1, characterized in that: A breathable plate (2) is fixedly connected to the inner wall of the outer shell (1), and the breathable plate (2) is located above the exhaust mechanism (3).

5. The negative pressure dry ice storage box according to claim 4, characterized in that: The inner wall of the outer shell (1) is fixedly connected to a heat-insulating layer (16), and the heat-insulating layer (16) is located above the air-permeable plate (2).

6. The negative pressure dry ice storage box according to claim 1, characterized in that: Rollers (12) are fixedly connected to the four corners of the bottom of the protective shell (6), and the number of the rollers (12) is four.

7. The negative pressure dry ice storage box according to claim 1, characterized in that: The outer walls on the left and right sides of the shell (1) are both fixedly connected with fixing blocks (4), the outer walls on the left and right sides of the protective shell (6) are both provided with a limiting groove (5), and the fixing blocks (4) are located inside the limiting groove (5).

Images