Gas removal controlled atmosphere fresh-keeping storehouse

Abstract

The utility model discloses a gas removal controlled atmosphere fresh-keeping storehouse, which belongs to the technical field of carbon dioxide removal, and comprises a controlled atmosphere storehouse, a drying pipe communicated and connected with the controlled atmosphere storehouse, a flow storehouse air pipe communicated and connected with the drying pipe, and a carbon dioxide concentration sensor arranged on the inner side of the controlled atmosphere storehouse, an air extracting pump is installed on the outer side, away from the drying pipe, of the air-conditioned cold store through a support, the input end of the air extracting pump is connected with the air-conditioned cold store in a communicating mode, and the output end of the air extracting pump is connected with the flow store air pipe in a communicating mode. The carbon dioxide in the gas is continuously desorbed by utilizing the collection solution in the second collection box, and meanwhile, the collection solution in the first collection box is replaced, so that the carbon dioxide contained in the gas in the air-conditioned cold store can be continuously desorbed.

Description

Technical Field

[0001] The utility model relates to the technical field of carbon dioxide removal, and more specifically to a gas removal and atmosphere-controlled fresh-keeping warehouse. Background Art

[0002] The atmosphere-controlled fresh-keeping warehouse is the most commonly used cold storage for storing fruits and vegetables. In the atmosphere-controlled fresh-keeping warehouse, the oxygen content is reduced to 1% to 10%, and the carbon dioxide content is increased to 1% to 10%. Such a storage environment can maintain the freshness of fruits and vegetables when they are picked, reduce losses, and have a long shelf life without pollution. Because fresh fruits and vegetables still undergo vigorous respiration and evaporation after being picked, they absorb oxygen from the air, decompose and consume their own nutrients, and produce carbon dioxide, water and heat. Respiration consumes the nutrients of fruits and vegetables after they are picked, so the key to extending the storage period of fruits and vegetables is to reduce the respiration rate. To a certain extent, evaporation is reduced and microbial growth is prevented; appropriately high concentrations of carbon dioxide can slow down respiration, and have the effect of delaying the start of respiratory climacteric fruits and vegetables, thereby delaying the ripening and aging of fruits and vegetables.

[0003] Therefore, the concentration and content of carbon dioxide in the controlled atmosphere fresh-keeping warehouse are controlled, and the carbon dioxide removal machine is a common equipment to achieve this function. The common carbon dioxide removal machine is installed in the controlled atmosphere fresh-keeping warehouse to control the carbon dioxide concentration in the controlled atmosphere fresh-keeping warehouse; however, this installation method greatly reduces the internal space. The existing patent is a carbon dioxide removal machine for the controlled atmosphere fresh-keeping warehouse. The patent authorization number CN217287829U is practical in design and can achieve the maximum utilization space of the controlled atmosphere fresh-keeping warehouse. The three-sided connection design adopted can fully absorb carbon dioxide gas and is suitable for industry promotion.

[0004] However, the mid-flow storage air duct of patent authorization number CN217287829U also has a liquid extension section, which is located on one side of the combined pipe section and extends into the collection solution cavity. In actual use, this design ensures that the carbon dioxide gas coming out of the controlled atmosphere fresh-keeping storage is fully absorbed by the collection solution cavity. Since the collection solution needs to be replaced after saturation, the carbon dioxide cannot be continuously removed during the replacement process. Therefore, we propose a gas removal controlled atmosphere fresh-keeping storage to solve the above-mentioned problems. Utility Model Content

[0005] 1. Technical problems to be solved

[0006] In view of the problems existing in the prior art, the purpose of the utility model is to provide a gas removal and controlled atmosphere preservation warehouse, which can adjust the first airtight valve and the second airtight valve after the solution in the first collecting box is saturated, and use the collection solution in the second collecting box to continuously desorb the carbon dioxide in the gas, and replace the collection solution in the first collecting box at the same time, so as to continuously remove the carbon dioxide contained in the gas in the controlled atmosphere warehouse.

[0007] 2. Technical solution

[0008] To solve the above problems, the utility model adopts the following technical solutions.

[0009] A gas removal and air conditioning fresh-keeping warehouse, comprising an air conditioning warehouse, a drying pipe conductively connected to the air conditioning warehouse, a flow warehouse air duct conductively connected to the drying pipe, and a carbon dioxide concentration sensor installed inside the air conditioning warehouse, wherein an air extraction pump is installed on the outside of the air conditioning warehouse away from the drying pipe through a bracket, the input end of the air extraction pump is conductively connected to the air conditioning warehouse, and the output end of the air extraction pump is conductively connected to the flow warehouse air duct;

[0010] A first collecting box and a second collecting box are placed below the flow storage air duct respectively;

[0011] The first collection box and the second collection box are both provided with a collection solution;

[0012] The top of the first collection box and the top of the second collection box are both equipped with an air inlet pipe and an air outlet pipe which are in communication with the flow storage air duct, and the air inlet pipe and the air outlet pipe are both equipped with a first airtight valve;

[0013] A second airtight valve is installed on the flow storage air duct at a position corresponding to the position between the air inlet pipe and the air outlet pipe;

[0014] The top edges of the first collecting box and the second collecting box are both provided with liquid filling ports, the side walls of the first collecting box and the second collecting box are both provided with liquid level windows, and a discharge pipe is provided below the liquid level window, and a stop valve is provided at the discharge pipe.

[0015] Furthermore, the bottom end of the air inlet pipe is located below the liquid level of the collected solution, and the bottom end of the air outlet pipe is located above the liquid level of the collected solution.

[0016] Furthermore, the collection solution is a sodium hydroxide solution.

[0017] Furthermore, a pH detector is installed on both the first collection box and the second collection box;

[0018] The pH detector comprises a detection rod and a digital display.

[0019] Furthermore, the detection rod is located between the air inlet pipe and the air outlet pipe, the digital display is located on one side of the top end of the detection rod, and the detection rod is electrically connected to the digital display;

[0020] The bottom end of the detection rod is located below the liquid surface of the collection solution.

[0021] Furthermore, a plug is detachably connected to the liquid filling port.

[0022] Furthermore, a through hole is provided on the top of the controlled atmosphere storage, and a negative pressure relief valve is installed on the inner side of the through hole.

[0023] 3. Beneficial effects

[0024] Compared with the prior art, the advantages of the present invention are:

[0025] (1) In this scheme, the gas in the gas conditioning tank is extracted by turning on the vacuum pump, the first airtight valve at the first collection box is opened, the first airtight valve at the second collection box is closed at the same time, the second airtight valve corresponding to the first collection box is closed, and the second airtight valve corresponding to the second collection box is opened, the extracted gas is transported to the first collection box through the flow tank air duct through the air inlet pipe, and the carbon dioxide contained in the gas is removed by using the collection solution;

[0026] When the solution in the first collecting box is saturated, the first airtight valve and the second airtight valve are adjusted to continuously desorb the carbon dioxide in the gas using the collecting solution in the second collecting box, while the collecting solution in the first collecting box is replaced, thereby continuously removing the carbon dioxide contained in the gas in the controlled atmosphere storage.

[0027] (2) In this solution, the pH value of the collected solution is continuously detected by a detection rod. When the pH value of the collected solution reaches neutral, the working states of the first collection box and the second collection box need to be rotated to ensure the removal effect of carbon dioxide in the gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0029] Figure 2 This is a schematic diagram of the inner structure of the gas conditioning storage of the utility model;

[0030] Figure 3 It is a side view schematic diagram of a first collection box of the utility model;

[0031] Figure 4 It is a schematic cross-sectional view of the AA portion of the first collection box of the present invention.

[0032] Description of the numbers in the figure:

[0033] 1. Controlled atmosphere storage; 2. Drying pipe; 3. Flow storage air duct; 4. Carbon dioxide concentration sensor; 5. Vacuum pump; 6. First collecting box; 7. Second collecting box; 8. Inlet pipe; 9. Outlet pipe; 10. First airtight valve; 11. Plug; 12. Liquid level window; 13. Discharge pipe; 14. Detection rod; 15. Digital display; 16. Negative pressure relief valve; 17. Second and first airtight valves. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work are within the scope of protection of the utility model.

[0035] Example:

[0036] See also Figure 1-4 A gas removal and air conditioning fresh-keeping warehouse, comprising an air conditioning warehouse 1, a drying pipe 2 conductively connected to the air conditioning warehouse 1, a flow warehouse air duct 3 conductively connected to the drying pipe 2, and a carbon dioxide concentration sensor 4 installed inside the air conditioning warehouse 1, an air extraction pump 5 is installed on the outside of the air conditioning warehouse 1 away from the drying pipe 2 through a bracket, an input end of the air extraction pump 5 is conductively connected to the air conditioning warehouse 1, and an output end of the air extraction pump 5 is conductively connected to the flow warehouse air duct 3;

[0037] A first collection box 6 and a second collection box 7 are placed below the flow storage air duct 3;

[0038] The first collection box 6 and the second collection box 7 are both provided with a collection solution;

[0039] The tops of the first collection box 6 and the second collection box 7 are both equipped with an air inlet pipe 8 and an air outlet pipe 9 which are in communication with the flow storage air duct 3, and the air inlet pipe 8 and the air outlet pipe 9 are both equipped with a first airtight valve 10;

[0040] A second airtight valve 17 is installed at the position between the air inlet pipe 8 and the air outlet pipe 9 corresponding to the flow storage air duct 3;

[0041] The top edge of the first collecting box 6 and the second collecting box 7 are both provided with a liquid filling port, the side walls of the first collecting box 6 and the second collecting box 7 are both provided with a liquid level window 12, and a discharge pipe 13 is provided below the liquid level window 12, and a stop valve is provided at the discharge pipe 13;

[0042] It should be noted that when the gas removal and gas conditioning storage is in use, the gas in the gas conditioning storage 1 is extracted by turning on the vacuum pump 5, the first airtight valve 10 at the first collection box 6 is opened, and the first airtight valve 10 at the second collection box 7 is closed at the same time, the second airtight valve 17 corresponding to the first collection box 6 is closed, and the second airtight valve 17 corresponding to the second collection box 7 is opened, and the extracted gas is transported to the first collection box 6 through the flow storage air duct 3 through the air inlet pipe 8, and the carbon dioxide contained in the gas is removed by using the collection solution, and then the gas is sent to the flow storage air duct 3 again by using the air outlet pipe 9, and after being dried by the drying pipe 2, it is sent to the gas conditioning storage 1;

[0043] When the solution in the first collecting box 6 is saturated, the first airtight valve 10 and the second airtight valve 17 are adjusted to continuously desorb the carbon dioxide in the gas using the collecting solution in the second collecting box 7, and at the same time replace the collecting solution in the first collecting box 6, so that the carbon dioxide contained in the gas in the controlled atmosphere storage 1 can be continuously removed.

[0044] like Figure 4 As shown, the bottom end of the air inlet pipe 8 is located below the liquid level of the collected solution, and the bottom end of the air outlet pipe 9 is located above the liquid level of the collected solution, and the collected solution is a sodium hydroxide solution;

[0045] It should be noted that the extracted gas is transported to the first collecting box 6 through the flow storage air duct 3 via the air inlet pipe 8, and the carbon dioxide contained in the gas is removed using the collecting solution, and then the gas is sent back to the flow storage air duct 3 via the air outlet pipe 9.

[0046] like Figure 4 As shown, a pH detector is installed on both the first collection box 6 and the second collection box 7;

[0047] The pH detector includes a detection rod 14 and a digital display 15 .

[0048] The detection rod 14 is located between the air inlet pipe 8 and the air outlet pipe 9, the digital display 15 is located on one side of the top end of the detection rod 14, and the detection rod 14 is electrically connected to the digital display 15;

[0049] The bottom end of the detection rod 14 is located below the liquid level of the collected solution;

[0050] It should be noted that the pH value of the collected solution is continuously detected by the detection rod 14. When the pH value of the collected solution reaches neutral, the working states of the first collection box 6 and the second collection box 7 need to be rotated to ensure the removal effect of carbon dioxide in the gas.

[0051] The model of the pH detector is AE8601.

[0052] like Figure 1As shown, a plug 11 is detachably connected to the liquid filling port;

[0053] It should be noted that the plug 11 is provided to prevent impurities from entering the first collection box 6 and the second collection box 7 through the liquid filling port.

[0054] like Figure 1 As shown, a through hole is opened on the top of the gas conditioning storage 1, and a negative pressure relief valve 16 is installed inside the through hole;

[0055] It should be noted that, by installing a sealing rubber ring between the through hole and the negative pressure relief valve 16 , the negative pressure relief valve 16 is used to maintain the balance of the air pressure inside the controlled atmosphere storage 1 .

[0056] When in use: the gas in the gas conditioning reservoir 1 is extracted by turning on the vacuum pump 5, the first airtight valve 10 at the first collecting box 6 is opened, and the first airtight valve 10 at the second collecting box 7 is closed at the same time, the second airtight valve 17 corresponding to the first collecting box 6 is closed, and the second airtight valve 17 corresponding to the second collecting box 7 is opened, and the extracted gas is transported to the first collecting box 6 through the flow reservoir air duct 3 through the air inlet pipe 8, and the carbon dioxide contained in the gas is removed by using the collection solution, and then the gas is sent to the flow reservoir air duct 3 again by using the gas outlet pipe 9, and after being dried by the drying pipe 2, it is sent to the gas conditioning reservoir 1;

[0057] When the solution in the first collecting box 6 is saturated, the first airtight valve 10 and the second airtight valve 17 are adjusted to continuously desorb the carbon dioxide in the gas using the collecting solution in the second collecting box 7, and at the same time replace the collecting solution in the first collecting box 6, so that the carbon dioxide contained in the gas in the controlled atmosphere storage 1 can be continuously removed.

[0058] The above is only a preferred specific implementation of the utility model; however, the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and improved ideas of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model.

Claims

1. A gas removal and atmosphere conditioning fresh-keeping warehouse, comprising an atmosphere conditioning warehouse (1), a drying pipe (2) conductively connected to the atmosphere conditioning warehouse (1), a flow warehouse air duct (3) conductively connected to the drying pipe (2), and a carbon dioxide concentration sensor (4) installed inside the atmosphere conditioning warehouse (1), characterized in that: An air extraction pump (5) is installed via a bracket on the outside of the atmosphere conditioning storehouse (1) away from the drying tube (2); the input end of the air extraction pump (5) is conductively connected to the atmosphere conditioning storehouse (1), and the output end of the air extraction pump (5) is conductively connected to the flow storehouse air duct (3); A first collection box (6) and a second collection box (7) are respectively placed below the flow storage air duct (3); The first collecting box (6) and the second collecting box (7) are both provided with a collecting solution; An air inlet pipe (8) and an air outlet pipe (9) which are in communication with the flow storage air duct (3) are installed at the top of the first collection box (6) and the second collection box (7), and a first airtight valve (10) is installed at the air inlet pipe (8) and the air outlet pipe (9); A second airtight valve (17) is installed at a position of the flow storage air duct (3) corresponding to between the air inlet pipe (8) and the air outlet pipe (9); The top edge portions of the first collecting box (6) and the second collecting box (7) are both provided with liquid filling ports, the side walls of the first collecting box (6) and the second collecting box (7) are both provided with liquid level windows (12), and a discharge pipe (13) is provided below the liquid level window (12), and a stop valve is provided at the discharge pipe (13).

2. A gas removal and atmosphere conditioning fresh-keeping warehouse according to claim 1, characterized in that: The bottom end of the air inlet pipe (8) is located below the liquid level of the collected solution, and the bottom end of the air outlet pipe (9) is located above the liquid level of the collected solution.

3. A gas removal and controlled atmosphere fresh-keeping warehouse according to claim 1, characterized in that: The collection solution is a sodium hydroxide solution.

4. A gas removal and atmosphere conditioning fresh-keeping warehouse according to claim 1, characterized in that: The first collection box (6) and the second collection box (7) are both equipped with a pH detector; The pH detector comprises a detection rod (14) and a digital display (15).

5. A gas removal and atmosphere conditioning fresh-keeping warehouse according to claim 4, characterized in that: The detection rod (14) is located between the air inlet pipe (8) and the air outlet pipe (9), the digital display (15) is located on one side of the top end of the detection rod (14), and the detection rod (14) and the digital display (15) are electrically connected; The bottom end of the detection rod (14) is located below the liquid surface of the collection solution.

6. A gas removal and atmosphere conditioning fresh-keeping warehouse according to claim 1, characterized in that: The liquid filling port is detachably connected with a plug (11).

7. A gas removal and controlled atmosphere fresh-keeping warehouse according to claim 1, characterized in that: A through hole is provided on the top of the controlled atmosphere storage (1), and a negative pressure relief valve (16) is installed inside the through hole.

Images