A refrigeration fan exhaust gas purification device

Abstract

This utility model discloses a refrigeration fan exhaust gas purification device, belonging to the field of environmental engineering technology. Its key technical features include an exhaust pipe with a gas collection and purification mechanism movably connected to its outer side. The bottom of the gas collection and purification mechanism is equipped with an emission pretreatment mechanism. A barrier cover can be added to the outer side of both exhaust pipe sections as secondary protection. When the seal ages and breaks, the leaked exhaust gas is trapped by the barrier cover and guided to the purification tank by a top reversible centrifugal fan. Clean cold air input through the cold air inlet is used to exchange heat and cool the exhaust gas through a reciprocating pressurized nozzle, causing dust, oil, and other impurities to condense into waste liquid and fall off. Simultaneously, the turbulent airflow generated by the oscillating airflow accelerates heat exchange and the reaction with the exhaust gas. This not only prevents leaked exhaust gas from directly polluting the workshop environment but also eliminates personnel safety hazards through purification treatment, effectively solving the leakage problem caused by traditional single-protection seals and significantly improving the efficiency and effect of exhaust gas purification.

Description

Technical Field

[0001] This utility model relates to the field of environmental engineering technology, and in particular to a refrigeration fan exhaust gas purification device. Background Technology

[0002] During the operation of refrigeration fans, exhaust gas containing pollutants such as dust and oil mist is generated. Traditional purification technologies suffer from problems such as low efficiency, high energy consumption, or poor adaptability. Moreover, existing devices are often not well matched with the operating conditions of the refrigeration system. There is an urgent need for a technical solution that balances efficient purification with system synergy.

[0003] In the existing technology, during the exhaust process of industrial refrigeration fans, exhaust pipes carry waste gas rich in pollutants such as dust and oil. Since the two exhaust pipes rely solely on seals without secondary protection, waste gas leaks and pollutes the workshop when the seals age and break, causing environmental pollution and safety hazards to personnel.

[0004] Therefore, a refrigeration fan exhaust gas purification device is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a refrigeration fan exhaust gas purification device that can solve the problem of uncontrollable exhaust gas leakage after existing seal failure.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a refrigeration fan exhaust gas purification device, including an exhaust pipe, a gas collection and purification mechanism is movably connected to the outside of the exhaust pipe, and an emission pretreatment mechanism is provided at the bottom of the gas collection and purification mechanism.

[0007] The gas collection and purification mechanism includes a barrier cover fixedly connected to the outside of the exhaust pipe. A reversible centrifugal fan is fixedly connected to the top of the barrier cover, and a gas supply pipe is fixedly connected to the bottom of the barrier cover. A purification tank is fixedly connected to the bottom of the gas supply pipe. Cold air inlets are fixedly connected to both sides of the purification tank. A cold air sweeping assembly is movably connected to the side of each cold air inlet closest to the purification tank. A pressurizing nozzle is movably connected to the inner side of the cold air sweeping assembly.

[0008] Preferably, the emission pretreatment mechanism includes a temporary storage tank located at the bottom of the purification tank, and a drain port is fixedly connected to the bottom of the temporary storage tank.

[0009] Preferably, the top and bottom of the inner side of the temporary storage tank are fixedly connected to support rings, and telescopic pillars are fixedly connected to the opposite sides of the two support rings. A honeycomb carbon adsorption plate is fixedly connected to the opposite sides of the two telescopic pillars.

[0010] Preferably, a return spring is fixedly connected to the inner side of the telescopic support.

[0011] Preferably, the cold air sweeping assembly includes two support plates disposed on the side of the two cold air inlets near the purification tank, and the two support plates are respectively fixedly connected to the two sides of the inner side of the purification tank. Each of the two cold air inlets is fixedly connected to an elastic hose on the side near the purification tank. The elastic hose is disposed on the inner side of the support plate, and the pressurizing nozzle is fixedly connected to the side of the two elastic hoses near the purification tank.

[0012] Preferably, a rotating bracket is rotatably connected to the outer side of the pressurizing nozzle. The rotating bracket is fixedly connected to one side of the two support plates near the purification tank. An extension shaft is rotatably connected to the rear side of the rotating bracket. The extension shaft is fixedly connected to the rear side of the pressurizing nozzle. A linkage tooth is fixedly connected to the rear side of the extension shaft. A torsion spring is fixedly connected to the side of the linkage tooth opposite to the rotating bracket. A servo motor is fixedly connected to the rear side of the rotating bracket. A drive residual tooth is fixedly connected to the output end of the servo motor. The drive residual tooth is movably connected to the bottom of the linkage tooth.

[0013] Preferably, an arc-shaped liquid collection pipe is fixedly connected to the bottom of the purification tank, and a duckbill valve is movably connected to the inner side of the arc-shaped liquid collection pipe. The temporary storage tank is fixedly connected to the bottom of the arc-shaped liquid collection pipe.

[0014] Preferably, a sensing valve is movably connected to the inner side of the drain port.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. This application, by setting up a gas collection and purification mechanism, can add a barrier cover on the outside of the two exhaust pipes as a secondary protection. When the seals age and break, the leaked exhaust gas is trapped by the barrier cover and guided to the purification tank by the top reversible centrifugal fan. The clean cold air input by the cold air inlet is used to exchange heat and cool the exhaust gas through the reciprocating oscillating pressurized air nozzle, causing dust, oil and other impurities to condense into waste liquid and fall off. At the same time, the gas turbulence formed by the oscillating air supply accelerates the heat exchange and reaction with the exhaust gas. This not only avoids the direct pollution of the workshop environment by the leaked exhaust gas, but also eliminates the safety hazards of personnel through purification treatment. It effectively solves the leakage problem caused by the single protection of traditional seals and significantly improves the efficiency and effect of exhaust gas purification.

[0017] 2. This application, by setting up a pretreatment mechanism for emissions, can install a honeycomb carbon adsorption plate in the middle section of the temporary storage tank. The elastic potential energy generated by the telescopic support and the return spring when the waste liquid falls and impacts the plate will cause it to vibrate up and down, thereby achieving dynamic adsorption and enhancing the purification effect on impurities in the waste liquid. At the same time, the bottom sensing valve intelligently selects the discharge path according to the waste liquid content. This not only improves the purification efficiency of the waste liquid through dynamic adsorption, but also ensures that waste liquids with different levels of pollution are properly disposed of through intelligent discharge paths. This effectively solves the problems of incomplete purification and lack of flexibility in subsequent treatment paths caused by simple static adsorption. Attached Figure Description

[0018] Figure 1 This is an overall structural diagram of the refrigeration fan exhaust gas purification device of this utility model;

[0019] Figure 2 This is an internal structural diagram of the refrigeration fan exhaust gas purification device of this utility model;

[0020] Figure 3 This is an overall structural diagram of the gas collection and purification mechanism of this utility model;

[0021] Figure 4 This is an overall structural diagram of the air-cooled sweeping assembly of this utility model;

[0022] Figure 5 This is an overall structural diagram of the emission pretreatment mechanism of this utility model.

[0023] In the diagram, 1. Exhaust pipe; 2. Gas collection and purification mechanism; 21. Barrier cover; 22. Reversible centrifugal fan; 23. Gas delivery pipe; 24. Purification tank; 25. Cold air inlet; 26. Cold air sweeping assembly; 26a. Support plate; 26b. Flexible hose; 26c. Rotating bracket; 26d. Extension shaft; 26e. Linkage gear; 26f. Torsion spring; 26g. Servo motor; 26h. Drive residual gear; 27. Pressurized air nozzle; 3. Emission pretreatment mechanism; 31. Temporary storage tank; 32. Drain outlet; 33. Support ring; 34. Telescopic support column; 35. Honeycomb carbon adsorption plate; 36. Return spring; 4. Arc-shaped liquid collection pipe; 5. Duckbill valve; 6. Sensing valve. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-5 The present invention provides the following technical solution:

[0026] A refrigeration fan exhaust gas purification device includes an exhaust pipe 1, an exhaust gas collection and purification mechanism 2 is movably connected to the outside of the exhaust pipe 1, and an exhaust pretreatment mechanism 3 is provided at the bottom of the exhaust gas collection and purification mechanism 2.

[0027] The gas collection and purification mechanism 2 includes a barrier cover 21 fixedly connected to the outside of the exhaust pipe 1. A reversible centrifugal fan 22 is fixedly connected to the top of the barrier cover 21. An air supply pipe 23 is fixedly connected to the bottom of the barrier cover 21. A purification tank 24 is fixedly connected to the bottom of the air supply pipe 23. Cold air inlets 25 are fixedly connected to both sides of the purification tank 24. A cold air sweeping assembly 26 is movably connected to the side of the two cold air inlets 25 closest to the purification tank 24. A pressurizing nozzle 27 is movably connected to the inner side of the cold air sweeping assembly 26.

[0028] In this embodiment: instead of relying solely on seals, a barrier cover 21 is installed on the outside of every two exhaust pipe sections 1 to completely cover the connection. When exhaust gas leaks, the reversible centrifugal fan 22 at the top of the barrier cover 21 guides the gas to the bottom purification tank 24. At the same time, the cold air inlets 25 on both sides of the purification tank 24 are connected to the cold air supply structure, and clean cold air is delivered to the pressurized nozzle 27 through the elastic hose 26b for heat exchange and cooling, so that harmful impurities in the exhaust gas condense into waste liquid and fall off. The cold air sweeping assembly 26 drives the pressurized nozzle 27 to swing back and forth to sweep the air, forming gas turbulence in the purification tank 24, thereby promoting heat exchange and exhaust gas reaction to improve purification efficiency and effect.

[0029] Specifically, such as Figure 1 , Figure 2 , Figure 5 As shown, the emission pretreatment mechanism 3 includes a temporary storage tank 31 located at the bottom of the purification tank 24, and a drain port 32 is fixedly connected to the bottom of the temporary storage tank 31.

[0030] Specifically, such as Figure 1 , Figure 2 , Figure 5 As shown, support rings 33 are fixedly connected to the top and bottom of the inner side of the temporary storage tank 31. Telescopic support columns 34 are fixedly connected to the opposite side of the two support rings 33. Honeycomb carbon adsorption plates 35 are fixedly connected to the opposite side of the two telescopic support columns 34.

[0031] Specifically, such as Figure 1 , Figure 2 , Figure 5 As shown, a return spring 36 is fixedly connected to the inner side of the telescopic support column 34.

[0032] In this embodiment: after the waste liquid enters the temporary storage tank 31, due to its own gravitational potential energy and falling inertia, it will impact the honeycomb carbon adsorption plate 35 located in the middle section of the temporary storage tank 31 to adsorb and purify the impurities in the waste liquid. After the honeycomb carbon adsorption plate 35 is impacted, the telescopic support column 34 between its top and bottom and the support ring 33 will stretch or contract accordingly. At the same time, the reset spring 36 inside the telescopic support column 34 will also stretch or contract and generate elastic potential energy. When the elastic potential energy is released, it will drive the honeycomb carbon adsorption plate 35 to vibrate up and down slightly, thereby achieving dynamic adsorption and further improving the adsorption effect. In addition, after a certain amount of waste liquid is stored in the temporary storage tank 31, the bottom sensing valve 6 will select the drainage path according to the waste liquid content, and directly discharge the waste liquid or carry out subsequent in-depth treatment.

[0033] Specifically, such as Figure 3 , Figure 4 As shown, the cold air sweeping assembly 26 includes two support plates 26a disposed on the side of the two cold air inlets 25 near the purification tank 24, and the two support plates 26a are respectively fixedly connected to the two sides of the inner side of the purification tank 24. Each of the two cold air inlets 25 is fixedly connected to the side of the purification tank 24 with an elastic hose 26b disposed on the inner side of the support plate 26a. A pressurizing nozzle 27 is fixedly connected to the side of the two elastic hoses 26b near the purification tank 24.

[0034] Specifically, such as Figure 3 , Figure 4 As shown, a rotating bracket 26c is rotatably connected to the outer side of the pressurized air nozzle 27. The rotating bracket 26c is fixedly connected to the side of the two support plates 26a near the purification tank 24. An extension shaft 26d is rotatably connected to the rear side of the rotating bracket 26c. The extension shaft 26d is fixedly connected to the rear side of the pressurized air nozzle 27. A linkage tooth 26e is fixedly connected to the rear side of the extension shaft 26d. A torsion spring 26f is fixedly connected to the side of the linkage tooth 26e opposite to the rotating bracket 26c. A servo motor 26g is fixedly connected to the rear side of the rotating bracket 26c. A drive residual tooth 26h is fixedly connected to the output end of the servo motor 26g. The drive residual tooth 26h is movably connected to the bottom of the linkage tooth 26e.

[0035] In this embodiment: by activating the servo motor 26g on the outside of the rotating bracket 26c, the drive tooth 26h at the output end of the servo motor 26g rotates. When the toothed surface of the drive tooth 26h contacts the linkage tooth 26e, on the one hand, the linkage tooth 26e engages and, because it is coaxial with the rotation point of the extension shaft 26d, the pressurized nozzle 27, and the rotating bracket 26c, it drives the pressurized nozzle 27 to swing to one side. On the other hand, the rotation of the linkage tooth 26e will tighten the torsion spring 26f between it and the outer wall of the rotating bracket 26c to generate a rotational force. When the drive tooth 26h rotates to the point where the toothless surface disengages, the pressurized nozzle 27 swings to the same amplitude on the other side under the rotational force of the torsion spring 26f and then resets. Thus, the pressurized nozzle 27 is reciprocated in a swinging motion rather than apical air delivery, which creates gas turbulence inside the purification tank 24, thereby promoting heat exchange and waste gas reaction to accelerate purification efficiency and enhance purification effect.

[0036] Specifically, such as Figure 1 , Figure 2 As shown, the bottom of the purification tank 24 is fixedly connected to the arc-shaped liquid collection pipe 4, and the inner side of the arc-shaped liquid collection pipe 4 is movably connected to the duckbill valve 5. The temporary storage tank 31 is fixedly connected to the bottom of the arc-shaped liquid collection pipe 4.

[0037] Specifically, such as Figure 2 As shown, a sensing valve 6 is movably connected to the inner side of the drain port 32.

[0038] In this embodiment: after the waste liquid is generated, it gains acceleration downward along the bottom arc-shaped collection pipe 4, which opens the duckbill valve 5 and enters the inner side of the temporary storage tank 31. After being impacted, the duckbill valve 5 closes quickly to prevent the purified gas from overflowing. The sensing valve 6 selects the discharge path of direct discharge or further in-depth treatment according to the waste liquid content.

[0039] Working Principle: In the exhaust process of industrial refrigeration fans, exhaust pipe 1 carries waste gas rich in pollutants such as dust and oil. Traditionally, exhaust pipe 1 only uses seals such as flange seals or simple gaskets between each two exhaust pipe sections for sealing. When the seals age or break, waste gas may leak through the seals, causing pollution to the workshop environment and posing safety risks to personnel. Now, instead of relying solely on seals, a barrier cover 21 is installed on the outside of each two exhaust pipe sections to completely cover the connection between the two exhaust pipe sections. This prevents waste gas from being directly discharged into the workshop environment when it leaks, instead trapping it inside the barrier cover 21. In this case, a reversible centrifugal fan 22 at the top of the barrier cover 21... 1. The internal gas is guided downwards and enters the purification tank 24 at the bottom through the gas supply pipe 23. Two sets of cold air inlets 25 are provided on both sides of the purification tank 24. The cold air inlets 25 are connected to the cold air supply structure from the outside to supply clean cold air, which is then delivered to the inside of the cold air inlets 25. The cold air is then supplied to two sets of pressurized air nozzles 27 through the flexible hose 26b, so that the internal heat exchange of the purification tank 24 is carried out and cooled. Affected by the cold air, the harmful impurities in the exhaust gas will condense and react into waste liquid and fall downwards, thus completing the purification of the exhaust gas. In order to further improve the purification efficiency and enhance the purification effect, when the pressurized air nozzles 27 deliver cold air, the servo motor 26 located on the outside of the rotating bracket 26c is activated. g causes the drive tooth 26h at the output of the servo motor 26g to rotate. When the drive tooth 26h rotates, its toothed surface contacts the linkage tooth 26e, achieving the following effects: First, it engages with the linkage tooth 26e, causing it to rotate to one side. Since the linkage tooth 26e, the extension shaft 26d, the pressurized air nozzle 27, and the rotating bracket 26c are coaxial, their unidirectional rotation causes the pressurized air nozzle 27 to swing to one side. Second, when the linkage tooth 26e rotates, it tightens the torsion spring 26f between itself and the outer wall of the rotating bracket 26c, generating a rotational force. When the drive tooth 26h rotates to the toothless surface, it disengages from the linkage tooth 26e, and under the rotation of the torsion spring 26f, the pressurized air nozzle 27 swings to the same amplitude on the other side. After resetting, the pressurized nozzle 27 reciprocates and swings, rather than delivering air at its apex, creating turbulent airflow inside the purification tank 24. This further promotes heat exchange and waste gas reaction, accelerating purification efficiency and enhancing purification effect. When waste liquid is generated, it flows downwards along the bottom arc-shaped collection pipe 4 with a certain acceleration, allowing it to open the duckbill valve 5 and enter the inner side of the temporary storage tank 31. The duckbill valve 5 closes quickly after impact to prevent purified gas from overflowing. When the waste liquid enters the temporary storage tank 31, due to its own gravitational potential energy and falling inertia, it impacts the honeycomb carbon adsorption plate 35 located in the middle section of the temporary storage tank 31 after entering, adsorbing and purifying the impurities inside. After the honeycomb carbon adsorption plate 35 is impacted...The telescopic support column 34 between the top and bottom of the column and the support ring 33 will stretch and contract accordingly. The return spring 36 inside the telescopic support column 34 will also stretch and contract accordingly, generating elastic potential energy. After the elastic potential energy is released, it will drive the honeycomb carbon adsorption plate 35 to vibrate slightly up and down, thereby completing dynamic adsorption and further enhancing the adsorption effect. After temporarily storing a certain amount of waste liquid, the bottom sensing valve 6 selects the discharge path according to the waste liquid content, either directly discharging or undergoing further treatment. The reversible centrifugal fan 22 starts in reverse to export and discharge the gas in the purification tank 24. After the exhaust pipe 1 stops venting, it is maintained to address any leakage issues. In summary, this achieves timely purification of waste gas leakage in the industrial refrigeration fan exhaust process.

[0040] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A refrigeration fan exhaust gas purification device comprising an exhaust pipe (1), characterized in that: The exhaust pipe (1) is movably connected to a gas collection and purification mechanism (2), and a pre-treatment mechanism (3) is provided at the bottom of the gas collection and purification mechanism (2). The gas collection and purification mechanism (2) includes a barrier cover (21) fixedly connected to the outside of the exhaust pipe (1). A reversible centrifugal fan (22) is fixedly connected to the top of the barrier cover (21). A gas supply pipe (23) is fixedly connected to the bottom of the barrier cover (21). A purification tank (24) is fixedly connected to the bottom of the gas supply pipe (23). Cold air inlets (25) are fixedly connected to both sides of the purification tank (24). A cold air sweeping assembly (26) is movably connected to the side of the two cold air inlets (25) near the purification tank (24). A pressurizing nozzle (27) is movably connected to the inner side of the cold air sweeping assembly (26).

2. The exhaust gas purification device for a refrigerant fan according to claim 1, characterized by: The emission pretreatment mechanism (3) includes a temporary storage tank (31) located at the bottom of the purification tank (24), and a drain port (32) is fixedly connected to the bottom of the temporary storage tank (31).

3. The exhaust gas purification device for a refrigerant fan according to claim 2, characterized in that: The top and bottom of the inner side of the temporary storage tank (31) are fixedly connected with support rings (33), and telescopic pillars (34) are fixedly connected to the opposite side of the two support rings (33). Honeycomb carbon adsorption plates (35) are fixedly connected to the opposite side of the two telescopic pillars (34).

4. The refrigeration fan exhaust gas purification device according to claim 3, characterized in that: A return spring (36) is fixedly connected to the inner side of the telescopic support (34).

5. The refrigeration fan exhaust gas purification device according to claim 1, characterized in that: The cold air sweeping assembly (26) includes two support plates (26a) disposed on the side of the two cold air inlets (25) near the purification tank (24), and the two support plates (26a) are respectively fixedly connected to the two sides of the inner side of the purification tank (24). The two cold air inlets (25) are each fixedly connected to the side of the purification tank (24) with elastic hoses (26b). The elastic hoses (26b) are disposed on the inner side of the support plates (26a). The pressurizing nozzle (27) is fixedly connected to the side of the two elastic hoses (26b) near the purification tank (24).

6. The refrigeration fan exhaust gas purification device according to claim 5, characterized in that: The outer side of the pressurized air nozzle (27) is rotatably connected to a rotating bracket (26c). The rotating bracket (26c) is fixedly connected to the side of the two support plates (26a) near the purification tank (24). An extension shaft (26d) is rotatably connected to the rear side of the rotating bracket (26c). The extension shaft (26d) is fixedly connected to the rear side of the pressurized air nozzle (27). A linkage tooth (26e) is fixedly connected to the rear side of the extension shaft (26d). A torsion spring (26f) is fixedly connected to the side opposite to the rotating bracket (26c) of the linkage tooth (26e). A servo motor (26g) is fixedly connected to the rear side of the rotating bracket (26c). A drive residual tooth (26h) is fixedly connected to the output end of the servo motor (26g). The drive residual tooth (26h) is movably connected to the bottom of the linkage tooth (26e).

7. The refrigeration fan exhaust gas purification device according to claim 2, characterized in that: The bottom of the purification tank (24) is fixedly connected to an arc-shaped liquid collection pipe (4), and a duckbill valve (5) is movably connected to the inner side of the arc-shaped liquid collection pipe (4). The temporary storage tank (31) is fixedly connected to the bottom of the arc-shaped liquid collection pipe (4).

8. The refrigeration fan exhaust gas purification device according to claim 2, characterized in that: A sensor valve (6) is movably connected to the inside of the drain port (32).

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