An energy-saving dry ice manufacturing and feeding device

Abstract

This utility model provides an energy-saving dry ice manufacturing and feeding device, relating to the field of dry ice feeding devices. It includes a storage tank, a first pipe at the bottom of the tank, a heat exchanger at one end of the first pipe, a flow meter on the surface of the first pipe, a second pipe on the side of the heat exchanger, an exhaust gas pipe on the surface of the heat exchanger, and a dry ice manufacturing machine at one end of the second pipe. The exhaust gas pipe 5 recovers the exhaust gas emitted by the dry ice manufacturing machine 6 and guides it into the heat exchanger 3 to pre-cool carbon dioxide, reducing refrigeration energy consumption. A flow meter 17 accurately measures the carbon dioxide flow rate to avoid over-cooling, thereby significantly reducing energy consumption in the dry ice manufacturing process, improving production efficiency, and lowering production costs.

Description

Technical Field

[0001] This utility model relates to the field of dry ice feeding devices, and in particular to an energy-saving dry ice manufacturing feeding device. Background Technology

[0002] According to Chinese Patent No. CN218596132U, this utility model belongs to the field of dry ice production technology and discloses a feeding structure for dry ice production. The key technical points include a compression cylinder, with a connecting cylinder fixedly connected to its bottom end. Feeding mechanisms are installed on both sides of the connecting cylinder, and a guide pipe is installed between the bottom ends of the two feeding mechanisms. A pressure measuring mechanism is installed inside the connecting cylinder, and a guide rod is fixedly connected to its bottom end. This utility model uses the compression cylinder as a liquid carbon dioxide storage and output device, connected to two feeding mechanisms via the connecting cylinder. The pressure inside the compression cylinder causes the liquid carbon dioxide to be discharged. Then, one of the feeding mechanisms is activated to feed the material through the guide pipe. As the efficiency of the feeding mechanism gradually decreases, the pressure inside the connecting cylinder gradually increases. This achieves the advantages of easy replacement of the feeding valve, uninterrupted delivery, improved efficiency, and convenient observation of the ball valve's throughput efficiency.

[0003] The aforementioned comparative documents and existing technologies have the following technical problems: the existing devices use a dual feeding mechanism and a rotary joint to improve the feeding speed and adaptability, but the feeding pipeline has heat loss problems, which causes the temperature of liquid carbon dioxide to rise during transportation, increasing the energy consumption of subsequent refrigeration. The structure is relatively complex, resulting in increased maintenance costs. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the existing technology and propose an energy-saving dry ice manufacturing and feeding device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an energy-saving dry ice manufacturing and feeding device, comprising a storage tank, a first pipe at the bottom of the storage tank, a heat exchanger at one end of the first pipe, a flow meter on the surface of the first pipe, a second pipe on the side of the heat exchanger, an exhaust gas pipe on the surface of the heat exchanger, and a dry ice manufacturing machine at one end of the second pipe.

[0006] Preferably, the surface of the first pipe is provided with a first temperature sensor, the surface of the second pipe is provided with a second temperature sensor, and the surface of the second pipe is provided with a control valve.

[0007] Preferably, a discharge port is provided between the first pipeline and the storage tank, and a first inlet of the heat exchanger is provided between the first pipeline and the heat exchanger.

[0008] Preferably, the second pipe has an exchanger outlet on the side of the heat exchanger, and the second pipe has a manufacturing machine inlet between it and the dry ice manufacturing machine.

[0009] Preferably, a second inlet for the heat exchanger is provided between the exhaust gas duct and the heat exchanger, and a machine outlet is provided between the exhaust gas duct and the dry ice making machine.

[0010] Preferably, the first pipe, the second pipe, and the exhaust gas pipe are vacuum-insulated pipe structures, and a vacuum layer is provided inside the first pipe, the second pipe, and the exhaust gas pipe. Furthermore, the first pipe and the exhaust gas pipe are arranged side-by-side.

[0011] Preferably, the heat exchanger has a cylindrical structure and the interior of the heat exchanger has a microchannel structure.

[0012] Beneficial effects

[0013] This invention employs vacuum insulated pipe technology within the pipeline, effectively reducing heat loss during the feeding process, lowering the temperature rise of liquid carbon dioxide during transport, reducing subsequent refrigeration energy consumption, lowering production costs, and solving the energy waste problem caused by pipeline heat loss. Adding a heat exchanger at the feeding mechanism inlet utilizes the waste gas generated during dry ice manufacturing to preheat the liquid carbon dioxide, further reducing its temperature and the energy required for subsequent refrigeration. This achieves effective recycling of waste gas resources, improving overall economic and environmental benefits. Attached Figure Description

[0014] Figure 1 This is an isometric view of the present invention;

[0015] Figure 2 This is a front view of the present invention;

[0016] Figure 3 This is a front view of the pipe of this utility model;

[0017] Figure 4 This is a cross-sectional view of the pipe of this utility model.

[0018] Legend:

[0019] 1. Storage tank; 2. First pipeline; 3. Heat exchanger; 4. Second pipeline; 5. Exhaust gas pipeline; 6. Dry ice making machine; 7. First temperature sensor; 8. Second temperature sensor; 9. Control valve; 10. Discharge port; 11. First inlet of heat exchanger; 12. Heat exchanger outlet; 13. Making machine inlet; 14. Second inlet of heat exchanger; 15. Making machine outlet; 16. Vacuum layer; 17. Flow meter. Detailed Implementation

[0020] To make the technical means, creative features, and achieved objectives and effects of this utility model easier to understand, the present utility model is further described below with reference to specific embodiments and accompanying drawings. However, the following embodiments are merely preferred embodiments of this utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described in the implementation plan without creative effort are all within the protection scope of this utility model.

[0021] The specific embodiments of this utility model are described below with reference to the accompanying drawings. Specific Implementation Example 1:

[0023] Reference Figure 1-4This embodiment provides an energy-saving dry ice manufacturing and feeding device, including a storage tank 1. A first pipe 2 is located at the bottom of the storage tank 1. A high-efficiency plate heat exchanger 3 is located at one end of the first pipe 2. A second pipe 4 is located on the side of the heat exchanger 3. An exhaust gas pipe 5 is located on the surface of the heat exchanger 3. A dry ice manufacturing machine 6 is located at one end of the second pipe 4. The exhaust gas pipe 5 is used to recover the exhaust gas emitted by the dry ice manufacturing machine 6 and guide it into the heat exchanger 3 to pre-cool the carbon dioxide in the first pipe 2, thereby reducing refrigeration energy consumption and achieving energy saving. A flow meter 17 is located on the surface of the first pipe 2 to accurately measure the flow rate of carbon dioxide entering the heat exchanger 3. The flow meter 17 is connected to a control system to automatically adjust the carbon dioxide flow rate and avoid excessive cooling that would waste energy. A first temperature sensor 7 is located on the surface of the first pipe 2, and a second temperature sensor 8 is located on the surface of the second pipe 4. A control valve 9 is located on the surface of the second pipe 4. The first temperature sensor 7 and the second temperature sensor 8 are used to monitor the inlet and outlet temperatures of carbon dioxide in the heat exchanger 3, respectively, and feed the temperature signals back to the control system. The control system automatically adjusts the control valve 9 according to the temperature difference to accurately control the flow rate of the cooling medium, ensuring that the carbon dioxide is cooled to the optimal temperature and avoiding excessive cooling that would waste energy. A discharge port 10 is provided between the first pipe 2 and the storage tank 1. A first heat exchange inlet 11 is provided between the first pipe 2 and the heat exchanger 3. The first heat exchange inlet 11 is connected to a cooling medium pipe for introducing the cooling medium into the heat exchanger 3 for heat exchange. A heat exchange outlet 12 is provided on the side of the second pipe 4 and the heat exchanger 3. The heat exchange outlet 12 is connected to a cooling medium discharge pipe for discharging the cooled medium after heat exchange. A dry ice making machine inlet 13 is provided between the second pipe 4 and the dry ice making machine 6. The dry ice making machine inlet 13 is connected to a carbon dioxide inlet pipe for introducing cooled carbon dioxide into the dry ice making machine 6 for dry ice making. A second heat exchange inlet 14 is provided between the exhaust gas pipe 5 and the heat exchanger 3. The second heat exchange inlet 14 is connected to the exhaust gas pipe 5 and is used to guide the exhaust gas emitted by the dry ice making machine 6 into the heat exchanger 3. A machine outlet 15 is provided between the exhaust gas pipe 5 and the dry ice making machine 6. The machine outlet 15 is connected to the exhaust gas discharge pipe and is used to guide the exhaust gas emitted by the dry ice making machine 6 into the exhaust gas pipe 5, realizing the recovery and utilization of exhaust gas and improving energy utilization. The first pipe 2, the second pipe 4, and the exhaust gas pipe 5 are vacuum-insulated tube structures. The first pipe 2, the second pipe 4, and the exhaust gas pipe 5 are equipped with a vacuum layer 16 and multiple layers of insulation material inside. The first pipe 2 and the exhaust gas pipe 5 are arranged side by side. The vacuum-insulated tube structure can effectively reduce heat loss in the pipes and reduce energy consumption. The heat exchanger 3 is a cylindrical structure, and the internal channel size of the heat exchanger 3 is a microchannel structure. The microchannel structure can increase the heat exchange area, improve the heat exchange efficiency, reduce the amount of cooling medium used, and achieve energy-saving effect. Specific embodiment two:

[0024] Reference Figure 1-4The control valve 9 in the device is replaced with a cooling pump and controller. The cooling pump enables more precise control of the cooling medium flow rate. Based on data from the first temperature sensor 7 and the second temperature sensor 8, the controller adjusts the cooling pump speed in real time to ensure that the carbon dioxide is cooled to the optimal temperature and to prevent overcooling.

[0025] In summary:

[0026] 1. Waste gas from the dry ice making machine 6 is recovered through exhaust pipe 5 and introduced into heat exchanger 3 to pre-cool carbon dioxide, reducing refrigeration energy consumption. Flow meter 17 accurately measures the carbon dioxide flow rate to avoid over-cooling. The flow rate of the cooling medium is precisely controlled by the first temperature sensor 7, the second temperature sensor 8, and the control valve 9 to avoid over-cooling. Vacuum insulated tube structure is used to reduce heat loss. Heat exchanger 3 adopts a microchannel structure to increase the heat exchange area, which helps to reduce the cost of dry ice manufacturing, improve energy utilization, and achieve energy saving and environmental protection.

[0027] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An energy-saving dry ice manufacturing and feeding device, comprising a storage tank (1), characterized in that: The storage tank (1) has a first pipe (2) at the bottom, a heat exchanger (3) at one end of the first pipe (2), a flow meter (17) on the surface of the first pipe (2), a second pipe (4) on the side of the heat exchanger (3), an exhaust gas pipe (5) on the surface of the heat exchanger (3), and a dry ice making machine (6) at one end of the second pipe (4).

2. The energy-saving dry ice manufacturing and feeding device according to claim 1, characterized in that: The surface of the first pipe (2) is provided with a first temperature sensor (7), the surface of the second pipe (4) is provided with a second temperature sensor (8), and the surface of the second pipe (4) is provided with a control valve (9).

3. The energy-saving dry ice manufacturing and feeding device according to claim 1, characterized in that: A discharge port (10) is provided between the first pipe (2) and the storage tank (1), and a heat exchange first inlet (11) is provided between the first pipe (2) and the heat exchanger (3).

4. The energy-saving dry ice manufacturing and feeding device according to claim 1, characterized in that: The second pipe (4) is provided with a heat exchange outlet (12) on the side of the heat exchanger (3), and the second pipe (4) is provided with a manufacturing machine inlet (13) between it and the dry ice manufacturing machine (6).

5. The energy-saving dry ice manufacturing feeding device according to claim 1, characterized in that: A second heat exchange inlet (14) is provided between the exhaust gas pipe (5) and the heat exchanger (3), and a manufacturing machine outlet (15) is provided between the exhaust gas pipe (5) and the dry ice manufacturing machine (6).

6. The energy-saving dry ice manufacturing and feeding device according to claim 1, characterized in that: The first pipe (2), the second pipe (4) and the exhaust pipe (5) are vacuum insulated pipe structures. The first pipe (2), the second pipe (4) and the exhaust pipe (5) are provided with a vacuum layer (16) inside, and the first pipe (2) and the exhaust pipe (5) are arranged side by side.

7. The energy-saving dry ice manufacturing and feeding device according to claim 1, characterized in that: The heat exchanger (3) has a cylindrical structure and a microchannel structure inside.

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