Dry ice tail gas recycling device
Through the automated design of the lifting mechanism and conveyor belt, combined with the spiral air pipe and cooling system, the problem of inaccurate manual filling is solved, and efficient and safe automatic recycling of dry ice exhaust is achieved, which is suitable for batch processing of dry ice exhaust.
Patent Information
- Application Number
- CN202422291041.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-20
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-09-20
AI Technical Summary
The existing dry ice exhaust gas recovery device requires operators to manually align the liquid tank with the compressor's liquid filling head for filling, resulting in inaccurate operation, high safety risks, low efficiency and high cost.
Automatic fluid filling is achieved by using lifting mechanism and transmission belt and clamping hands, and the spiral air pipe and cooling system are used to cool the gas. The transmission and clamping of the liquid tank is accurately controlled through the servo motor and the transmission motor to ensure filling accuracy and safety.
It realizes automatic filling and transmission of dry ice exhaust, improves recycling efficiency, reduces safety risks, ensures the stability and service life of the equipment, and is suitable for batch recycling.
Smart Images
Figure CN223090426U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of dry ice tail gas recovery and utilization, and particularly relates to a dry ice tail gas recovery and utilization device. Background Technique
[0002] The recovery and utilization of dry ice tail gas is an important environmental protection and resource conservation technology. During the production and application of dry ice, a large amount of carbon dioxide tail gas will be generated. By recovering and utilizing this tail gas, not only can carbon dioxide emissions be reduced and the greenhouse effect be mitigated, but also the tail gas can be converted into liquid or solid dry ice and reused in industrial production and applications, improving resource utilization efficiency. The main links of dry ice tail gas recovery mainly include tail gas collection, cooling, compression and liquefaction, and storage and utilization. First, the carbon dioxide tail gas generated during the production process is collected into a tail gas tank. Then, the gaseous carbon dioxide is cooled by a cooling system, and part of it is converted into liquid. Next, the cooled carbon dioxide is compressed under high pressure by a compressor to convert it into liquid or solid dry ice. Finally, the recovered dry ice is stored in a liquid tank for subsequent use.
[0003] At present, the existing dry ice tail gas recovery devices on the market require operators to manually align the liquid tank with the liquid filling head of the compressor for filling operations. When the operator aligns the liquid filling head and the tank mouth, the position of the liquid tank needs to be adjusted repeatedly, which is likely to cause inaccurate alignment and result in leakage of liquid dry ice; during the manual alignment process, the operator needs to directly contact the low-temperature liquid dry ice, increasing the operation difficulty and safety risk; the low-temperature liquid dry ice can cause frostbite, affecting the health and safety of the operator; the efficiency of manual operation is low, increasing the labor cost and operation time. The operator needs to spend a lot of time and energy on alignment and filling operations, affecting the overall recovery and utilization efficiency; manual operation is prone to errors, and it is inevitable that there will be problems such as inaccurate alignment or inconsistent filling volume, resulting in unsatisfactory recovery effect of liquid dry ice.
[0004] Therefore, there is an urgent need for a dry ice tail gas recovery and utilization device to solve the deficiencies in the prior art. Content of the Utility Model
[0005] The purpose of the utility model is to provide a dry ice tail gas recovery and utilization device to solve the problem that operators need to manually align the liquid tank with the liquid filling head of the compressor for filling operations as mentioned in the above background technique.
[0006] To achieve the above object, the present utility model provides the following technical solutions: A dry ice tail gas recovery and utilization device, including a device body and a cylinder. A cylinder is installed on the right side of the outer wall of the device body. At the bottom of the cylinder, there is a lifting mechanism for lifting a liquid tank. The lifting mechanism includes a fixing plate fixedly connected to the bottom end of the piston rod of the cylinder. On each of the left and right sides of the device body, a set of side grooves is opened. The fixing plate extends across the side grooves into the device body. Inside the part of the fixing plate extending into the device body, a servo motor is installed. At the end of the fixing plate, a fixing seat is fixedly connected. Inside the fixing seat, a central gear is installed. The output shaft of the servo motor is fixedly connected to the central gear. The upper and lower ends of the central gear are respectively engaged with a first rack and a second rack. A fixing frame is fixedly connected to the outside of each of the first rack and the second rack. At the fixing frame, a clamping hand is welded respectively.
[0007] Further, the clamping hands are symmetrically distributed, and the clamping hands are semi-circular arc plates.
[0008] Further, fixing screws are respectively fixedly connected between the fixing frames and the first rack and the second rack. The first rack and the second rack are respectively fixedly connected to the inner wall of the fixing seat.
[0009] Preferably, in the upper left of the inside of the device body is a dry ice tail gas tank, in the upper right of the inside of the device body is a compressor. Between the dry ice tail gas tank and the compressor, there is a cooling cavity. Inside the cooling cavity, a spiral air pipe is installed. The input end of the spiral air pipe is connected to the dry ice tail gas tank, and the output end of the spiral air pipe is connected to the compressor.
[0010] Further, an electromagnetic valve is installed at the output end of the compressor. At the bottom of the electromagnetic valve, a liquid filling head is installed. On the left side of the inner wall of the device body, a water tank is installed. The water tank is connected to the cooling cavity through a pipeline. The bottom end of the cooling cavity is connected with a drainage pipeline extending outside the device body. At the top of the wall of the cooling cavity, a temperature detector is installed.
[0011] Preferably, a bottom frame is installed at the bottom end of the inside of the device body. A conveyor belt is supported at the bottom frame. A conveyor motor is installed on the left side of the bottom frame. The conveyor belt extends across the side grooves to the outside of the device body from left to right.
[0012] Further, a plurality of limit seats are arranged on the outer surface of the conveyor belt. The limit seats are evenly distributed outside the conveyor belt. A liquid tank is placed at each set of limit seats.
[0013] Further, the limit seats are made of silica gel material, and their sizes match the liquid tanks.
[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows: This dry ice tail gas recovery and utilization device not only realizes automatic liquid filling, cooling of the dry ice tail gas and then compression, but also realizes automatic transmission and batch recovery and utilization;
[0015] (1) By providing a lifting mechanism, a lifting mechanism is provided at the bottom end of the compressor. When the liquid tank reaches the bottom end of the filling head under the conveyance of the conveyor belt, the cylinder pulls the fixed plate upward, thereby driving the fixed seat to lift. The servo motor drives the central gear to rotate, and the two racks move in opposite directions at the same time, driving the clamping hands to move relatively and clamp the liquid tank from the front and back directions. The cylinder pulls the fixed plate upward again, aligns the liquid tank opening with the filling head, and makes the filling head extend into the tank opening. The dry ice tail gas compressed by the compressor forms a liquid state and is poured into the liquid tank. After filling, the cylinder lowers the fixed plate until the liquid tank falls back onto the limit seat, and the conveyor belt conveys the liquid tank away. This lifting mechanism realizes automatic liquid filling, avoids the contact caused by manual alignment of the filling head with the tank opening and handling of the liquid tank by personnel, avoids the errors and losses brought by manual operation, and eliminates potential safety hazards;
[0016] (2) By providing a spiral air pipe, a compressor, a temperature detector, and a water tank, after the dry ice tail gas enters the spiral air pipe, the cooling water is pumped out by the water tank to fill the accommodation cavity where the spiral air pipe is located. When the dry ice tail gas starts from the gaseous state and flows through the spiral air pipe, it exchanges heat with the cooling water outside the spiral air pipe, gradually reducing its temperature. The spiral air pipe increases the path and time of gas flow, enhancing the cooling effect. As the temperature of the dry ice tail gas decreases, part of the gaseous carbon dioxide begins to condense into a liquid state. Through further cooling, finally under the high pressure of the compressor, the liquid carbon dioxide is compressed into solid dry ice, and the temperature in the detection cavity is detected by the temperature detector. The dry ice tail gas can be fully cooled before entering the compressor, ensuring the stability and efficiency of the compression process. It not only improves the stability of the dry ice tail gas recovery process, but also prevents the damage of high-temperature waste gas to the equipment, extends the service life of the equipment, and ensures the consistency and efficiency of the dry ice tail gas during the compression process by reducing temperature fluctuations;
[0017] (3) By providing a conveyor belt, a conveyor motor, and a limit seat, multiple groups of liquid tanks are conveyed by the conveyor belt. The conveying speed of the conveyor belt can be controlled by the conveyor motor. Each group of liquid tanks is placed on the limit seat to maintain the stability of movement and the movement spacing. The size of the limit seat is set according to the specifications of the liquid tank, and the conveyor motor precisely controls the conveying speed, avoiding the problems of tank tipping or stacking caused by being too fast or too slow, and is suitable for batch recovery and utilization. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 is a front sectional structure schematic diagram of the present utility model;
[0019] Figure 2Schematic side sectional structure diagram of the fixing base of the present utility model;
[0020] Figure 3 Front view structure diagram of the spiral air pipe of the present utility model;
[0021] Figure 4 Front view structure diagram of the conveyor belt of the present utility model.
[0022] In the figure: 1, device body; 2, compressor; 3, cylinder; 4, fixing plate; 5, servo motor; 6, fixing base; 7, clamping hand; 8, liquid filling head; 9, solenoid valve; 10, side groove; 11, chassis; 12, conveyor belt; 13, limit seat; 14, conveyor motor; 15, spiral air pipe; 16, water tank; 17, dry ice tail gas tank; 18, temperature detector; 19, first rack; 20, fixing frame; 21, second rack; 22, fixing screw; 23, central gear. Specific embodiments
[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.
[0024] Embodiment 1: Please refer to Figures 1-4 , a dry ice tail gas recycling device, including a device body 1 and a cylinder 3. A cylinder 3 is installed on the right side of the outer wall of the device body 1. A lifting mechanism for lifting the liquid tank is provided at the bottom end of the cylinder 3. The lifting mechanism includes a fixing plate 4 fixedly connected to the bottom end of the piston rod of the cylinder 3. A set of side grooves 10 are opened on each of the left and right sides of the device body 1. The fixing plate 4 extends across the side grooves 10 into the device body 1. A servo motor 5 is installed inside the part of the fixing plate 4 extending into the device body 1. A fixing base 6 is fixedly connected to the end of the fixing plate 4. A central gear 23 is installed inside the fixing base 6. The output shaft of the servo motor 5 is fixedly connected to the central gear 23. The upper and lower ends of the central gear 23 are respectively engaged with a first rack 19 and a second rack 21. A set of fixing frames 20 are respectively fixed outside the first rack 19 and the second rack 21. Clamping hands 7 are respectively welded at the fixing frames 20. The clamping hands 7 are symmetrically distributed. The clamping hands 7 are semi-circular arc plates. Fixing screws 22 are respectively fixedly connected between the fixing frames 20 and the first rack 19 and the second rack 21. The first rack 19 and the second rack 21 are respectively fixedly connected to the inner wall of the fixing base 6;
[0025] Specifically, as Figure 1 and Figure 2As shown in the figure, a lifting mechanism is provided at the bottom end of the compressor 2. When the liquid tank arrives at the bottom end of the filling head 8 under the conveyance of the conveyor belt 12, the cylinder 3 pulls the fixed plate 4 upward, thereby driving the fixed seat 6 to lift. The servo motor 5 drives the central gear 23 to rotate, and the two sets of racks move in opposite directions simultaneously, driving the grippers 7 to move relatively to clamp the liquid tank from the front and back directions. The cylinder 3 pulls the fixed plate 4 upward again, aligns the liquid tank opening with the filling head 8, and inserts the filling head 8 into the tank opening. The dry ice tail gas compressed by the compressor 2 forms a liquid state and is poured into the liquid tank. After filling, the cylinder 3 lowers the fixed plate 4 until the liquid tank falls back onto the limit seat 13, and then the conveyor belt 12 conveys the liquid tank away. This lifting mechanism realizes automatic liquid filling, avoids the contact caused by personnel's hands aligning the filling head 8 with the tank opening and taking the liquid tank, avoids the errors and losses brought by manual operation, and eliminates potential safety hazards.
[0026] Embodiment 2: Inside the device body 1, there is a dry ice tail gas tank 17 in the upper left corner, and a compressor 2 is arranged in the upper right corner of the device body 1. A cooling cavity is provided between the dry ice tail gas tank 17 and the compressor 2. A spiral gas pipe 15 is installed in the cooling cavity. The input end of the spiral gas pipe 15 is connected to the dry ice tail gas tank 17, and the output end of the spiral gas pipe 15 is connected to the compressor 2. An electromagnetic valve 9 is installed at the output end of the compressor 2, and a filling head 8 is installed at the bottom end of the electromagnetic valve 9. A water tank 16 is installed on the left side of the inner wall of the device body 1. The water tank 16 is connected to the cooling cavity through a pipeline. The bottom end of the cooling cavity is connected to a drainage pipeline extending outside the device body 1. A temperature detector 18 is installed on the top of the cooling cavity wall.
[0027] Specifically, as Figure 1 and Figure 3 shown, after the dry ice tail gas enters the spiral gas pipe 15, cooling water is drawn out from the water tank 16 to fill the accommodating cavity where the spiral gas pipe 15 is located. When the dry ice tail gas starts from the gaseous state and flows through the spiral gas pipe 15, it exchanges heat with the cooling water outside the spiral gas pipe 15, gradually reducing its temperature. The spiral gas pipe 15 increases the gas flow path and time, enhancing the cooling effect. As the temperature of the dry ice tail gas decreases, some gaseous carbon dioxide begins to condense into a liquid state. Through further cooling, finally under the high pressure of the compressor 2, the liquid carbon dioxide is compressed into solid dry ice, and the temperature in the detection cavity is detected by the temperature detector 18. The dry ice tail gas can be fully cooled before entering the compressor 2, ensuring the stability and efficiency of the compression process. This not only improves the stability of the dry ice tail gas recovery process but also prevents the damage of high-temperature waste gas to the equipment, extends the service life of the equipment, and ensures the consistency and efficiency of the dry ice tail gas during the compression process by reducing temperature fluctuations.
[0028] Embodiment 3: A chassis 11 is installed at the bottom end inside the device body 1. A conveyor belt 12 is supported at the chassis 11. A conveyor motor 14 is installed on the left side of the chassis 11. The conveyor belt 12 extends horizontally across the side groove 10 to the outside of the device body 1. A plurality of limit seats 13 are arranged on the outer surface of the conveyor belt 12. The limit seats 13 are evenly distributed outside the conveyor belt 12. A liquid tank is placed at each group of limit seats 13. The limit seats 13 are made of silica gel and their sizes match those of the liquid tanks.
[0029] Specifically, as Figure 1 and Figure 4 shown, multiple groups of liquid tanks are conveyed by the conveyor belt 12. The conveying speed of the conveyor belt 12 can be controlled by the conveyor motor 14. Each group of liquid tanks is placed on the limit seats 13 to maintain moving stability and moving spacing. The sizes of the limit seats 13 are set according to the specifications of the liquid tanks. The conveyor motor 14 precisely controls the conveying speed, avoiding problems such as the tipping or piling up of the tanks caused by being too fast or too slow, and is suitable for batch recycling.
[0030] Working principle: Multiple groups of liquid tanks are conveyed by the conveyor belt 12. The conveying speed of the conveyor belt 12 can be controlled by the conveyor motor 14. Each group of liquid tanks is placed on the limit seats 13 to maintain moving stability and moving spacing. When the liquid tank arrives at the bottom end of the filling head 8 under the conveyance of the conveyor belt 12, the air cylinder 3 pulls the fixed plate 4 upward, thereby driving the fixed seat 6 to lift. The servo motor 5 drives the central gear 23 to rotate, and the two second racks 21 move in opposite directions at the same time, driving the clamping hands 7 to move relatively to clamp the liquid tank from the front and back directions. The air cylinder 3 pulls the fixed plate 4 upward again to align the liquid tank opening with the filling head 8 and make the filling head 8 extend into the tank opening. After the dry ice exhaust gas enters the spiral air pipe 15, the cooling water is pumped out by the water tank 16 to fill the accommodation cavity where the spiral air pipe 15 is located. When the dry ice exhaust gas starts from the gaseous state and flows through the spiral air pipe 15, it exchanges heat with the cooling water outside the spiral air pipe 15, gradually reducing its temperature. The spiral air pipe 15 increases the path and time of gas flow, enhancing the cooling effect. As the temperature of the dry ice exhaust gas decreases, part of the gaseous carbon dioxide begins to condense into a liquid state. Through further cooling, finally under the high pressure of the compressor 2, the liquid carbon dioxide is compressed into solid dry ice and the temperature inside the cavity is detected by the temperature detector 18. The dry ice exhaust gas can be fully cooled before entering the compressor 2. The dry ice exhaust gas compressed by the compressor 2 forms a liquid state and is then poured into the liquid tank. After filling, the air cylinder 3 lowers the fixed plate 4 until the liquid tank falls back onto the limit seat 13, and then the conveyor belt 12 conveys the liquid tank away.
[0031] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-described exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model. Any reference signs in the claims should not be construed as limiting the claims involved.
Claims
1. A dry ice tail gas recovery and utilization device, comprising a device body (1) and a cylinder (3), characterized in that: On the right side of the outer wall of the device body (1), a cylinder (3) is installed, and a lifting mechanism for lifting the liquid tank is arranged at the bottom end of the cylinder (3). The lifting mechanism includes a fixed plate (4) fixedly connected to the bottom end of the piston rod of the cylinder (3). A set of side grooves (10) are respectively opened on the left and right sides of the device body (1). The fixed plate (4) extends through the side grooves (10) into the device body (1). A servo motor (5) is installed inside the part of the fixed plate (4) extending into the device body (1). A fixed seat (6) is fixedly connected to the end of the fixed plate (4). A central gear (23) is installed inside the fixed seat (6). The output shaft of the servo motor (5) is fixedly connected to the central gear (23). A first rack (19) and a second rack (21) are respectively meshed with the upper and lower ends of the central gear (23). A set of fixed frames (20) are respectively fixed outside the first rack (19) and the second rack (21). Clamping hands (7) are respectively welded at the fixed frames (20).
2. The dry ice tail gas recycling device according to claim 1, characterized in that: The clamping hands (7) are symmetrically distributed, and the clamping hands (7) are semi-circular arc plates.
3. The dry ice tail gas recycling device according to claim 1, wherein: Fixed screws (22) are respectively fixedly connected between the fixed frames (20) and the first rack (19) and the second rack (21). The first rack (19) and the second rack (21) are respectively fixedly connected to the inner wall of the fixed seat (6).
4. A dry ice tail gas recycling device according to claim 1, characterized in that: In the upper left of the device body (1) is a dry ice tail gas tank (17). A compressor (2) is arranged in the upper right of the device body (1). A cooling cavity is arranged between the dry ice tail gas tank (17) and the compressor (2). A spiral air pipe (15) is installed in the cooling cavity. The input end of the spiral air pipe (15) is connected to the dry ice tail gas tank (17), and the output end of the spiral air pipe (15) is connected to the compressor (2).
5. The dry ice tail gas recycling device according to claim 4, characterized in that: An electromagnetic valve (9) is installed at the output end of the compressor (2). A liquid filling head (8) is installed at the bottom end of the electromagnetic valve (9). A water tank (16) is installed on the left inner wall of the device body (1). The water tank (16) is connected to the cooling cavity through a pipeline. A drainage pipeline extending to the outside of the device body (1) is connected to the bottom end of the cooling cavity. A temperature detector (18) is installed at the top of the cooling cavity wall.
6. The dry ice tail gas recycling device according to claim 1, characterized in that: A bottom frame (11) is installed at the bottom end inside the device body (1). A conveyor belt (12) is supported at the bottom frame (11). A conveyor motor (14) is installed on the left side of the bottom frame (11). The conveyor belt (12) extends through the side grooves (10) horizontally to the outside of the device body (1).
7. The dry ice tail gas recycling device according to claim 6, characterized in that: A plurality of limiting seats (13) are arranged on the outer surface of the conveyor belt (12). The limiting seats (13) are evenly distributed outside the conveyor belt (12). A liquid tank is placed at each group of limiting seats (13).
8. A dry ice tail gas recycling device according to claim 7, characterized in that: The limiting seats (13) are made of silica gel, and their sizes match those of the liquid tanks.