Flue gas purification equipment for processing circuit breaker shell

Abstract

The invention provides flue gas purification equipment for processing a circuit breaker shell, and relates to the technical field of air pollution prevention and control. The flue gas purification equipment for processing the circuit breaker shell comprises a heat exchanger arranged at the inner upper part of a cabinet body, and an injection mold arranged at the inner middle part of the cabinet body; and the blocking mechanism is arranged in the sub-pipeline, when the injection mold is closed, the blocking mechanism is used for blocking the sub-pipeline, and when the injection mold is opened, the blocking mechanism relieves blocking of the sub-pipeline so that the top of the inner cavity of the cabinet body can communicate with the branch pipeline, and the smoke inlet of the heat exchanger is formed downwards and communicates with the top of the inner cavity of the cabinet body. During mold closing, air pressure in the main pipeline can be distributed to other injection molds which are being opened, so that smoke enters the activated carbon filter pipe through the smoke inlet to be filtered and adsorbed, the filtered and adsorbed smoke is discharged into the main pipeline through the smoke outlet, pollution of the smoke to air in an injection molding workshop is avoided, and the service life of the injection molding workshop is prolonged. The air pollution is prevented, and the purpose of protecting the atmospheric environment is achieved.

Description

Technical Field

[0001] This invention relates to the field of air pollution control technology, and more specifically, to flue gas purification equipment for processing circuit breaker housings. Background Technology

[0002] In the field of plastic injection molding, especially in the manufacturing of small plastic products such as circuit breaker housings, the mold closing and opening stages of injection molding generate process waste gases with significantly different characteristics. The mold closing stage (injection molding stage) mainly involves the release of trace amounts of volatiles from plastic particles in a high-temperature molten state; the amount of flue gas generated is relatively low and its composition is relatively simple. However, the mold opening stage (demolding stage) is characterized by a surge in flue gas volume due to the negative pressure effect caused by the cooling and shrinkage of the plastic, the high-temperature volatilization of the release agent, and the backflow of air carried by residual volatiles. Furthermore, the flue gas composition is complex (containing pollutants such as non-methane hydrocarbons and silicon-based compounds). Traditional injection molding workshop flue gas treatment systems typically employ a fixed airflow design, directly extracting waste gas from the cabinet through centralized pipelines.

[0003] However, due to the intermittent nature of the injection molding process, most existing flue gas purification equipment has significant limitations when dealing with parallel production at multiple workstations: when some workstations are in the mold closing stage with low flue gas volume, the air volume distribution of centralized pipelines lacks a dynamic adjustment mechanism, resulting in high-concentration flue gas in the mold opening stage not being given priority treatment. Some flue gas may remain in the cabinet or leak directly into the workshop environment due to insufficient air pressure, causing local air pollution. At the same time, the underutilized air volume resources also increase the system's energy consumption. Summary of the Invention

[0004] To address the above problems, the present invention provides a flue gas purification device for processing circuit breaker housings.

[0005] This invention provides a flue gas purification device for processing circuit breaker housings, comprising: a heat exchanger disposed in the upper inner part of a cabinet, and an injection mold disposed in the middle inner part of the cabinet; a sub-pipe, one end of which is connected to the top of the inner cavity of the cabinet; a branch pipe disposed between two adjacent cabinets, with both ends of the branch pipe connected to the other ends of the sub-pipes on the two cabinets respectively; an activated carbon filter pipe connected to the middle of the branch pipe, the two ends of the activated carbon filter pipe being designated as smoke inlets and the middle as smoke outlets, the smoke inlets being connected to the smoke outlets; a main pipe connected to the smoke outlets; and a sealing mechanism disposed within the sub-pipes. When the injection mold is closed, the sealing mechanism is used to seal the sub-pipes; when the injection mold is opened, the sealing mechanism releases the seal on the sub-pipes, thereby allowing the top of the inner cavity of the cabinet to connect with the branch pipes.

[0006] Optionally, the activated carbon filter tube is provided with two sets of activated carbon filter components, and the two sets of activated carbon filter components are respectively located near the two smoke inlets.

[0007] Optionally, the activated carbon filter component includes a partition and a spiral adsorption unit. The partition is connected to the inner middle of the activated carbon filter tube so that the inner cavity of the activated carbon filter tube forms two cavities. The partition is located in the middle of the exhaust port. The ends of the two cavities that are far apart from each other are set as the exhaust port. Each cavity is provided with a spiral adsorption unit.

[0008] Optionally, the spiral adsorption unit includes spiral blades, filter screens, a shaft, and a rubber ball. The shaft is coaxially disposed within the cavity. The inner circumference of the spiral blades is connected to the shaft, and the outer circumference of the spiral blades abuts against the inner circumferential surface of the cavity. Two filter screens are respectively connected to the two ends of the spiral blades, and the filter screens abut against the inner circumferential surface of the cavity. Activated carbon particles are filled between the two filter screens. The rubber ball is connected to the shaft. The smoke inlet is funnel-shaped, and the small-diameter end of the smoke inlet communicates with the cavity. When the sealing mechanism seals the sub-pipe, the rubber ball seals the small-diameter end of the smoke inlet.

[0009] Optionally, the outer periphery of the spiral blade is slidably connected to the inner periphery of the cavity, and the outer periphery of the filter screen is slidably connected to the inner periphery of the cavity. When the sealing mechanism releases the seal on the sub-pipe, the spiral blade moves toward the end away from the exhaust port.

[0010] Optionally, the sealing mechanism includes a blocking ball, a spring plate, and a push-pull mechanism. The lower part of the sub-pipe is set as a fume hood. The large-diameter end of the fume hood is located above the heat exchanger. The two ends of the spring plate slide out of the two sides of the fume hood. The push-pull mechanism is driven to connect with the spring plate. The blocking ball is fixed in the middle of the spring plate. When the injection mold is closed, the plug ball abuts against the inner wall of the sub-pipe; When the injection mold opens, the push-pull mechanism causes the middle part of the spring to be recessed downwards, so that the spring is away from the inner wall of the sub-channel.

[0011] Optionally, the activated carbon filter tube is further provided with a steel wire and a spring. One end of the steel wire is connected to the stop ball, and the other end of the steel wire is connected to the shaft. One end of the spring is connected to the partition plate, and the other end of the spring is connected to the corresponding filter screen.

[0012] Optionally, the flue gas purification equipment for processing circuit breaker housings further includes a smoke extraction pipe, one end of which is connected to the small-diameter end of the smoke inlet, and the other end of which is connected to the corresponding fume hood.

[0013] Optionally, the ball blocker includes a metal ball and a rubber layer, with the rubber layer covering the metal ball.

[0014] Optionally, the flue gas purification equipment for processing the circuit breaker housing further includes a fan, the air inlet of which is connected to the main pipeline.

[0015] The beneficial effects of the flue gas purification equipment for circuit breaker housing processing of the present invention are as follows: By dividing multiple cabinets in the injection molding workshop into pairs, each pair of cabinets is connected to a branch pipe via a sub-pipe, and multiple branch pipes are connected to a main pipe. By setting a sealing mechanism in the sub-pipes, since the amount of flue gas generated when the injection mold is closed is minimal, while the amount of flue gas generated when the mold is opened increases dramatically, the sealing mechanism can block the corresponding sub-pipe when the mold is closed. Under the condition that the air pressure in the main pipe remains constant, the air pressure in the main pipe can be distributed to other injection molds that are currently opening. A dynamic adjustment mechanism is implemented to prioritize the treatment of high-concentration flue gas during the mold opening stage. This prevents some flue gas from remaining inside the cabinet or leaking directly into the workshop environment due to insufficient air pressure, thus avoiding local air pollution. This allows for full utilization of air volume resources and reduces system energy consumption. The flue gas then enters the branch pipe through the sub-pipe, and then enters the activated carbon filter tube through the flue gas inlet for filtration and adsorption. The filtered and adsorbed flue gas is discharged into the main pipe through the flue gas outlet, preventing the flue gas from polluting the air in the injection molding workshop, preventing air pollution, and achieving the goal of atmospheric environmental protection. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a flue gas purification device for processing circuit breaker housings according to an embodiment of the present invention; Figure 2 This is a schematic diagram showing that both injection molds in the flue gas purification equipment for processing circuit breaker housings are in the closed state, according to an embodiment of the present invention. Figure 3 In this embodiment of the invention, the two injection molds in the flue gas purification equipment for processing circuit breaker housings are in the mold-opening state, which is the mold-closed state and the mold-opening state respectively. Figure 4 In this embodiment of the invention, both injection molds in the flue gas purification equipment for processing circuit breaker housings are in the open state. Figure 5 This is a diagram showing the position switching of the ball plug in the flue gas purification equipment for processing circuit breaker housings according to an embodiment of the present invention.

[0017] Explanation of reference numerals in the attached drawings: 1. Branch pipe; 2. Sub-pipe; 21. Fume hood section; 3. Activated carbon filter tube; 31. Cavity; 32. Spiral blade; 33. Baffle plate; 34. Filter screen; 35. Shaft; 36. Rubber ball; 37. Steel wire; 38. Spring; 4. Main pipe; 5. Fan; 6. Heat exchanger; 7. Sealing mechanism; 71. Blocking ball; 72. Spring; 73. Push-pull mechanism; 8. Smoke extraction pipe; 100. Cabinet; 200. Injection mold. Detailed Implementation

[0018] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0019] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0020] In the description of this specification, the references to terms such as "embodiment," "one embodiment," "some implementations," "exemplary," and "one implementation," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or implementation is included in at least one embodiment or implementation of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or implementation. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or implementations.

[0021] The terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature.

[0022] This invention provides a flue gas purification device for processing circuit breaker housings, comprising: a heat exchanger 6 disposed in the upper inner part of a cabinet 100; an injection mold 200 disposed in the middle inner part of the cabinet 100; a sub-pipe 2, one end of which is connected to the top of the inner cavity of the cabinet 100; a branch pipe 1 disposed between two adjacent cabinets 100, with both ends of the branch pipe 1 connected to the other ends of the sub-pipe 2 on the two cabinets 100 respectively; and an activated carbon filter pipe 3 connected to the middle of the branch pipe 1, with both ends of the activated carbon filter pipe 3 having... The system includes a smoke inlet and a smoke exhaust outlet in the middle, which are connected to each other. A main pipe 4 is connected to the smoke exhaust outlet. A sealing mechanism 7 is located inside the sub-pipe 2. When the injection mold 200 closes, the sealing mechanism 7 seals the sub-pipe 2. When the injection mold 200 opens, the sealing mechanism 7 releases the seal on the sub-pipe 2, allowing the top of the inner cavity of the cabinet 100 to connect with the branch pipe 1. The flue gas inlet of the heat exchanger 6 is positioned downwards and connected to the top of the inner cavity of the cabinet 100.

[0023] Specifically, the circuit breaker housing is made of plastic, and the housing of a conventional circuit breaker is not large in size. In the injection molding workshop, the injection mold 200 is installed in a closed cabinet 100 for automated injection molding. After injection molding is completed, the injection mold 200 is opened, the fumes are extracted from the cabinet 100, and the cabinet 100 is opened to remove the circuit breaker housing from the injection mold 200.

[0024] It should be noted that during the mold closing stage (injection molding), the plastic granules are heated and melted in the injection molding machine barrel (temperature 180-300℃), and a small amount of low-molecular-weight volatiles (such as monomers and additives) are released due to heat. Local overheating may lead to thermal decomposition, producing trace amounts of fumes (mainly non-methane hydrocarbons). At the moment the molten plastic is injected into the cavity, the gas (air, volatiles) is compressed under high pressure, and a small amount of gas escapes from the parting surface or venting grooves. When the mold closes, there is a small gap (0.02-0.05mm) between the moving mold and the fixed mold, and some gas is discharged from here. Venting grooves with a depth of 0.01-0.03mm are provided around the mold cavity, and there is a gap (0.01-0.02mm) between the ejector pins and the mold hole wall, where a small amount of gas may leak. During the demolding stage (ejection), when the plastic cools and solidifies from the molten state, the volume shrinkage causes a negative pressure to form in the cavity. External air flows back through the venting channel, carrying residual volatiles. If a silicone-based release agent is used, the high temperature during ejection causes the release agent to evaporate rapidly, forming visible fumes.

[0025] In this optional embodiment, combined with Figure 1 , Figure 2 , Figure 3 and Figure 4By dividing multiple cabinets 100 in the injection molding workshop into pairs, with each pair of cabinets 100 connected to a branch pipe 1 via a sub-pipe 2, and multiple branch pipes 1 connected to a main pipe 4, and by installing a sealing mechanism 7 in the sub-pipe 2, the amount of smoke generated when the injection mold 200 closes is minimal, while the amount of smoke generated when the mold opens is greatly increased. When the mold closes, the sealing mechanism 7 can seal the corresponding sub-pipe 2. With the air pressure in the main pipe 4 remaining constant, the air pressure in the main pipe 4 can be distributed to other injection molds 200 that are currently opening, thus achieving dynamic... The air conditioning mechanism prioritizes the treatment of high-concentration fumes during the mold-opening stage, preventing some fumes from remaining inside the cabinet 100 due to insufficient air pressure or leaking directly into the workshop environment, causing local air pollution. This fully utilizes the air volume resources and reduces system energy consumption. The fumes then enter the branch pipe 1 through the sub-pipe 2, and then enter the activated carbon filter pipe 3 through the smoke inlet for filtration and adsorption. The filtered and adsorbed fumes are discharged into the main pipe 4 through the exhaust port, preventing fumes from polluting the air in the injection molding workshop, thus preventing air pollution and achieving the goal of atmospheric environmental protection.

[0026] Furthermore, the activated carbon filter tube 3 is equipped with two sets of activated carbon filter components, which are respectively located near the two smoke inlets.

[0027] In this optional embodiment, combined with Figure 2 As shown, the flue gas generated in the two cabinets 100 is adsorbed and filtered by two sets of activated carbon filter components.

[0028] Optionally, the activated carbon filter component includes a partition 33 and a spiral adsorption unit. The partition 33 is connected to the inner middle of the activated carbon filter tube 3 so that the inner cavity of the activated carbon filter tube 3 forms two cavities 31. The partition 33 is located in the middle of the exhaust port. The ends of the two cavities 31 that are far apart from each other are set as the exhaust port. Each cavity 31 is provided with a spiral adsorption unit.

[0029] Optionally, the spiral adsorption unit includes a spiral blade 32, a filter screen 34, a shaft 35, and a rubber ball 36. The shaft 35 is coaxially disposed in the cavity 31. The inner circumference of the spiral blade 32 is connected to the shaft 35, and the outer circumference of the spiral blade 32 abuts against the inner circumferential surface of the cavity 31. Two filters 34 are respectively connected to the two ends of the spiral blade 32, and the filters 34 abut against the inner circumferential surface of the cavity 31. Activated carbon particles are filled between the two filters 34. The rubber ball 36 is connected to the shaft 35. The smoke inlet is funnel-shaped, and the small diameter end of the smoke inlet is connected to the cavity 31. When the sealing mechanism 7 seals the sub-pipe 2, the rubber ball 36 seals the small diameter end of the smoke inlet.

[0030] Furthermore, the outer periphery of the spiral blade 32 is slidably connected to the inner periphery of the cavity 31, and the outer periphery of the filter screen 34 is slidably connected to the inner periphery of the cavity 31. When the sealing mechanism 7 releases the seal on the sub-pipe 2, the spiral blade 32 moves toward the end away from the exhaust port.

[0031] In this optional embodiment, combined with Figure 2 and Figure 3 As shown, the pore size of filter screen 34 is smaller than the particle size of activated carbon particles, thus preventing activated carbon particles from leaking out. When the spiral blade 32 moves, the two filter screens 34 can push the activated carbon particles to move together, thereby allowing some activated carbon particles to flow to a certain extent. The flow of activated carbon particles can effectively avoid caking. During static adsorption, activated carbon particles are prone to forming a caking layer due to compaction and impurity accumulation, which leads to a decrease in adsorption efficiency. However, by pushing the particles to flow through the spiral blade 32, the formation of the caking layer can be broken, maintaining the loose structure of the activated carbon bed, thereby ensuring sufficient contact between flue gas and activated carbon particles and improving the overall adsorption efficiency.

[0032] Optionally, the sealing mechanism 7 includes a blocking ball 71, a spring plate 72, and a push-pull mechanism 73. The lower part of the sub-pipe 2 is set as a fume hood 21. The large-diameter end of the fume hood 21 is located above the heat exchanger 6. The two ends of the spring plate 72 slide out of the two sides of the fume hood 21. The push-pull mechanism 73 is driven to connect with the spring plate 72. The blocking ball 71 is fixed in the middle of the spring plate 72. When the injection mold 200 is closed, the plug ball 71 abuts against the inner wall of the sub-pipe 2; When the injection mold 200 opens, the push-pull mechanism 73 causes the middle part of the spring piece 72 to be recessed downwards, so that the spring piece 72 is away from the inner wall of the sub-pipe 2.

[0033] Optionally, the activated carbon filter tube 3 is also provided with a steel wire 37 and a spring 38. One end of the steel wire 37 is connected to the ball stopper 71, and the other end of the steel wire 37 is connected to the shaft 35. One end of the spring 38 is connected to the partition plate 33, and the other end of the spring 38 is connected to the corresponding filter screen 34.

[0034] Specifically, in combination Figure 2 , Figure 3 and Figure 4 As shown, in order to avoid the steel wire 37 from contacting the inner wall of the branch pipe 1 and causing wear on the steel wire 37, a guide wheel can be installed in the branch pipe 1 to allow the steel wire 37 to transition. When the plug ball 71 moves down, it will drag the shaft 35 through the steel wire 37, thereby moving the entire activated carbon filter component and forcing the spring 38 to be stretched. When the plug ball 71 moves up, the spring 38 returns to its original state, which can reset the activated carbon filter component.

[0035] Optionally, the flue gas purification equipment for circuit breaker housing processing also includes a smoke extraction pipe 8, one end of which is connected to the small-diameter end of the smoke inlet, and the other end of which is connected to the corresponding smoke hood 21.

[0036] In this optional embodiment, combined with Figure 2 As shown, taking one set of cabinets 100 as an example, the injection molds 200 in both cabinets 100 are in the closed state. Since the amount of smoke generated when the mold is closed is very small, the two blocking balls 71 block the sub-pipes 2 respectively. At this time, the two rubber balls 36 also block the small diameter end of the smoke inlet respectively. In other words, there is no gas flow in the entire branch pipe 1. The main pipe 4 can draw the smoke generated by the injection molds 200 in the open state in other sets of cabinets 100. Combination Figure 3 As shown, assuming that there are two cabinets 100 in this group, one injection mold 200 is in the closed state and the other injection mold 200 is in the open state, for example, the injection mold 200 on the left is in the open state while the injection mold 200 on the right is in the closed state. When the injection mold 200 on the left is opened, the push-pull mechanism 73 causes the blocking ball 71 to move down, so that the flue gas can enter the branch pipe 1. The blocking ball 71 is pulled to the left by the steel wire 37, which pulls the shaft 35 to the left, so that the rubber ball 36 moves to the left, and then the flue gas enters the spiral adsorption unit for full filtration and adsorption. The filtered flue gas enters the main pipe 4 through the exhaust port. At the same time, since the inlet is funnel-shaped, the flow rate of the flue gas increases when it passes through the inlet, thus forming a negative pressure zone at the small diameter end of the inlet. Then, the exhaust pipe 8 will also extract a certain amount of the flue gas generated by the injection mold 200 on the right that is in the closed state, thereby reducing the flue gas treatment pressure when the injection mold 200 on the right is opened. Combination Figure 4 As shown, the injection molds 200 inside both cabinets 100 are in the open state, and their working principle is the same as... Figure 3 The same applies to the injection mold on the left side of the middle section when it is opened (200), so I won't go into details here.

[0037] Optionally, the push-pull mechanism 73 includes a first connecting rod, a slider, and a second connecting rod. One end of the first connecting rod is rotatably connected to the upper mold base of the injection mold 200, and the other end of the first connecting rod is rotatably connected to one end of the slider. The slider is slidably connected to the inner side wall of the cabinet 100, and the other end of the slider is rotatably connected to one end of the second connecting rod. The other end of the second connecting rod is rotatably connected to the corresponding end of the spring piece 72.

[0038] In this optional embodiment, combined with Figure 2 , Figure 3 and Figure 4As shown, when the injection mold 200 opens, the upper mold base of the injection mold 200 moves upward, the first connecting rod pushes the slider to move upward, and the second connecting rod applies pressure to the corresponding end of the spring piece 72, thereby forcing the spring piece 72 to continue to bend downward, thereby causing the blocking ball 71 to move downward and release the blockage of the sub-pipe 2.

[0039] It should be noted that the upward and downward movement of the upper mold base of the injection mold 200 can be achieved by lifting equipment installed inside the cabinet 100, such as cylinders, hydraulic cylinders, etc.

[0040] Furthermore, the ball 71 includes a metal ball and a rubber layer, with the rubber layer covering the metal ball.

[0041] In this optional embodiment, combined with Figure 5 As shown, the metal ball increases its own weight. When the ball 71 moves downward, the metal ball can pull the shaft 35 to move via the steel wire 37, thereby enabling the spiral adsorption unit to overcome the tension of the spring 38 and move as a whole. When the spring plate 72 lifts the ball 71, the spring 38 returns to its original state, thus resetting the spiral adsorption unit. The ball 71 is in... Figure 5 When the rubber layer is in the upper state, the sealing performance is better when it abuts against the inner wall of the sub-pipe 2, and the ball 71 is in... Figure 5 When the gas is in its lower state, a gap is formed between the rubber layer and the inner wall of the sub-pipe 2. After being cooled by the heat exchanger 6, the flue gas can enter the branch pipe 1 through the gap. Since the heat exchanger 6 cannot completely cool the flue gas, the flue gas will still have a certain amount of heat when it enters the branch pipe 1. When the flue gas heat is higher, according to the principle of thermal expansion and contraction, the rubber layer expands to a certain extent, making the gap d smaller, thereby reducing the amount of flue gas entering the branch pipe 1, thus reducing the thermal impact on the activated carbon particles and improving the filtration and adsorption effect of the activated carbon particles to a certain extent.

[0042] Optionally, the flue gas purification equipment for processing circuit breaker housings also includes a fan 5, the air inlet of which is connected to the main duct 4.

[0043] In this optional embodiment, combined with Figure 1 As shown, the power of the fan 5 can be selected according to the number of cabinets 100 in the injection molding workshop. An activated carbon adsorption bed can also be set up in the injection molding workshop. The air outlet of the fan 5 is connected to the activated carbon adsorption bed through a pipe to adsorb and filter the flue gas again.

[0044] While the present invention has been disclosed above, its scope of protection is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the scope of protection of the present invention.

Claims

1. A flue gas purification device for processing circuit breaker housings, characterized in that, include: A heat exchanger (6) is located in the upper part of the cabinet (100), and an injection mold (200) is located in the middle part of the cabinet (100). Sub-pipe (2), one end of which is connected to the top of the inner cavity of the cabinet (100); A branch pipe (1) is provided between two adjacent cabinets (100), and both ends of the branch pipe (1) are respectively connected to the other end of the sub-pipe (2) on the two cabinets (100); An activated carbon filter tube (3) is connected to the middle part of the branch pipe (1). The two ends of the activated carbon filter tube (3) are set as smoke inlets and the middle part is set as smoke outlets. The smoke inlets and the smoke outlets are connected. The main pipe (4) is connected to the exhaust port; A sealing mechanism (7) is provided inside the sub-pipe (2). When the injection mold (200) is closed, the sealing mechanism (7) is used to seal the sub-pipe (2). When the injection mold (200) is opened, the sealing mechanism (7) releases the seal on the sub-pipe (2) so that the top of the inner cavity of the cabinet (100) is connected to the branch pipe (1).

2. The flue gas purification equipment for circuit breaker housing processing as described in claim 1, characterized in that, The activated carbon filter tube (3) is provided with two sets of activated carbon filter components, which are respectively located near the two smoke inlets.

3. The flue gas purification equipment for circuit breaker housing processing as described in claim 2, characterized in that, The activated carbon filter component includes a partition (33) and a spiral adsorption unit. The partition (33) is connected to the inner middle of the activated carbon filter tube (3) so that the inner cavity of the activated carbon filter tube (3) forms two cavities (31). The partition (33) is located in the middle of the exhaust port. The ends of the two cavities (31) that are far apart from each other are set as the exhaust port. Each cavity (31) is provided with a spiral adsorption unit.

4. The flue gas purification equipment for circuit breaker housing processing as described in claim 3, characterized in that, The spiral adsorption unit includes a spiral blade (32), a filter screen (34), a shaft (35), and a rubber ball (36). The shaft (35) is coaxially disposed in the cavity (31). The inner circumference of the spiral blade (32) is connected to the shaft (35), and the outer circumference of the spiral blade (32) abuts against the inner circumference of the cavity (31). Two filters (34) are respectively connected to the two ends of the spiral blade (32), and the filters (34) abut against the inner circumference of the cavity (31). Activated carbon particles are filled between the two filters (34). The rubber ball (36) is connected to the shaft (35). The smoke inlet is funnel-shaped, and the small diameter end of the smoke inlet is connected to the cavity (31). When the sealing mechanism (7) seals the sub-pipe (2), the rubber ball (36) seals the small diameter end of the smoke inlet.

5. The flue gas purification equipment for circuit breaker housing processing as described in claim 4, characterized in that, The outer periphery of the spiral blade (32) is slidably connected to the inner periphery of the cavity (31), and the outer periphery of the filter screen (34) is slidably connected to the inner periphery of the cavity (31). When the sealing mechanism (7) releases the sealing of the sub-pipe (2), the spiral blade (32) moves toward the end away from the exhaust port.

6. The flue gas purification equipment for circuit breaker housing processing as described in claim 5, characterized in that, The sealing mechanism (7) includes a blocking ball (71), a spring plate (72), and a push-pull mechanism (73). The lower part of the sub-pipe (2) is set as a fume hood (21). The large-diameter end of the fume hood (21) is located above the heat exchanger (6). The two ends of the spring plate (72) slide out of the two sides of the fume hood (21). The push-pull mechanism (73) is driven to connect with the spring plate (72). The blocking ball (71) is fixed in the middle of the spring plate (72). When the injection mold (200) is closed, the plug ball (71) abuts against the inner wall of the sub-pipe (2); When the injection mold (200) is opened, the push-pull mechanism (73) causes the middle part of the spring piece (72) to be recessed downward, so that the spring piece (72) is away from the inner wall of the sub-pipe (2).

7. The flue gas purification equipment for circuit breaker housing processing as described in claim 6, characterized in that, The activated carbon filter tube (3) is also provided with a steel wire (37) and a spring (38). One end of the steel wire (37) is connected to the ball stopper (71), and the other end of the steel wire (37) is connected to the shaft (35). One end of the spring (38) is connected to the partition plate (33), and the other end of the spring (38) is connected to the corresponding filter screen (34).

8. The flue gas purification equipment for circuit breaker housing processing as described in claim 6, characterized in that, The flue gas purification equipment for processing circuit breaker housings also includes a smoke extraction pipe (8), one end of which is connected to the small-diameter end of the smoke inlet, and the other end of which is connected to the corresponding smoke hood (21).

9. The flue gas purification equipment for circuit breaker housing processing as described in claim 6, characterized in that, The ball blocker (71) comprises a metal ball and a rubber layer, wherein the rubber layer covers the metal ball.

10. The flue gas purification equipment for circuit breaker housing processing as described in claim 1, characterized in that, The flue gas purification equipment for processing circuit breaker housings also includes a fan (5), the air inlet of which is connected to the main pipeline (4).

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