Device for modularly treating waste gas containing metal dust

Abstract

The utility model discloses a device for modularly treating waste gas containing metal dust, relates to the technical field of waste gas treatment, and aims to solve the technical problem that the current device for modularly treating waste gas containing metal dust is inconvenient to discharge ash without shutdown. Through the design of the collection box, the interior of the collection box is divided into three groups of cavities through two groups of separation plates, then circular pipes of ash hoppers at the bottoms of the baffling settling chamber, the electrostatic dust collection chamber and the filter bag dust collection chamber are connected with the corresponding cavities, and a blocking structure is arranged in each circular pipe, so that when ash needs to be discharged, the blocking structures can be controlled to seal the circular pipes, and the dust is discharged conveniently. At the moment, metal dust and other particles filtered by the baffling settling chamber, the electrostatic dust collection chamber and the filter bag dust collection chamber are directly stored in the dust hopper, then personnel can directly discharge dust in a cavity of the collection box, and in the process, the device works normally, so that the effect of discharging dust without shutdown can be achieved.

Description

Technical Field

[0001] This utility model relates to the field of waste gas treatment technology, and more specifically, to a modular device for treating waste gas containing metal dust. Background Technology

[0002] In many industrial production processes, such as metal smelting, machining, and electronics manufacturing, a large amount of waste gas containing metal dust is generated. If this waste gas is discharged directly without effective treatment, it will cause serious harm to the environment and human health, such as causing air pollution, soil pollution, and respiratory diseases. Therefore, the waste gas containing metal dust needs to be treated before it can be discharged. This requires the use of modular devices for treating waste gas containing metal dust.

[0003] A search revealed a Chinese utility model with publication number "CN209287514U" that discloses a modular device for treating exhaust gas containing metal dust. It achieves three-step dust removal of exhaust gas containing metal dust through three sets of processing modules: a baffle settling chamber, an electrostatic dust removal chamber, and a filter bag dust removal chamber. This results in good dust removal effect and ease of use.

[0004] Although the baffle settling chamber, electrostatic precipitator, and bag filter chamber mentioned in the above documents achieve automatic unloading through the ash discharge valves at their bottoms, the device needs to be shut down during unloading, which causes the device to stop treating the exhaust gas containing metal dust and affects the device's working efficiency. In view of this, we propose a modular device for treating exhaust gas containing metal dust. Utility Model Content

[0005] The purpose of this utility model is to overcome the shortcomings of the existing technology, adapt to the needs of reality, and provide a modular device for treating exhaust gas containing metal dust, so as to solve the technical problem that the current modular device for treating exhaust gas containing metal dust is not convenient for ash discharge without stopping the machine.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a modular device for treating exhaust gas containing metal dust, comprising a support frame, wherein a baffle settling chamber, an electrostatic precipitator chamber, and a bag filter chamber are arranged side by side from left to right on the top of the support frame, and ash hoppers are arranged at the bottom of the baffle settling chamber, the electrostatic precipitator chamber, and the bag filter chamber, and a collection box is arranged at the bottom of the support frame, and a circular pipe is connected between the collection box at the bottom of the ash hoppers of the baffle settling chamber, the electrostatic precipitator chamber, and the bag filter chamber, and a sealing structure is arranged inside the circular pipe, and the inside of the collection box is divided into three cavities by two sets of partition plates, and the three cavities correspond to the baffle settling chamber, the electrostatic precipitator chamber, and the bag filter chamber;

[0007] The sealing structure consists of a control structure and a sealing component. The sealing component is located at the top opening inside the circular tube, and the control structure is located at the bottom opening inside the ash hopper.

[0008] This invention features a collection box designed to divide the interior into three chambers via two sets of partitions. The circular tubes of the bottom ash hoppers in the baffled settling chamber, electrostatic precipitator, and bag filter chamber are connected to their respective chambers. A sealing structure is installed within these circular tubes. Therefore, when treating exhaust gas containing metal dust, the sealing structure can be opened, connecting the ash hopper to the internal chambers of the collection box. Metal dust particles filtered by the baffled settling chamber, electrostatic precipitator, and bag filter chamber will then fall directly into the internal chambers of the collection box for storage. When ash discharge is required, the sealing structure can be closed to shut off the circular tubes. In this case, the metal dust particles filtered by the baffled settling chamber, electrostatic precipitator, and bag filter chamber are directly stored in the ash hopper, and personnel can then directly discharge the dust from the internal chambers of the collection box. During this process, the device operates normally, thus achieving the effect of continuous ash removal and avoiding interruption of the treatment of metal dust-containing waste gas due to device shutdown during ash removal. The sealing structure of this utility model consists of a control structure and a sealing component. The lower part of the sealing block in the sealing component is a frustum, and the inner hole of the mating ring is also frustum-shaped. Both the frustum inner hole and the frustum of the mating ring are set with the larger end facing up and the smaller end facing down. Therefore, when the frustum of the sealing block is inserted into the inner hole of the frustum of the mating ring to seal the circular tube, the sealing block is pushed by the airflow, which can make the sealing block press more tightly into the inner hole of the frustum of the mating ring, thereby better ensuring the sealing performance of the sealing structure on the circular tube and preventing dust leakage from the circular tube when the device is discharging ash without stopping the machine. Therefore, it can further ensure the effect of continuous ash removal.

[0009] Preferably, an air inlet is arranged at the top of one side of the baffle settling chamber, the outlet of the baffle settling chamber opposite to the air inlet is connected to the electrostatic precipitator, the outlet of the electrostatic precipitator opposite to the baffle settling chamber is connected to the bag filter chamber, and an air outlet is arranged at the top of the bag filter chamber opposite to the electrostatic precipitator.

[0010] Preferably, the top of the collection box has docking holes corresponding to the three sets of cavities, a sealing door is hinged to the front of the collection box, a first sealing strip is arranged around the sealing door, a second sealing strip corresponding to the isolation plate is arranged on the inner side of the sealing door, two sets of symmetrical latches are arranged on the top of the front of the sealing door, and a buckle block corresponding to the latches is arranged on the top of the front of the collection box.

[0011] Preferably, each of the three cavities inside the collection box contains a storage box, and the front side of the storage box is provided with a snap-fit ​​groove.

[0012] Preferably, the sealing assembly includes a sealing block and a mating ring. The mating ring is arranged at the top of the inner opening of the circular tube, and the sealing block is inserted into the mating ring. The top of the sealing block is a conical part, and the bottom of the sealing block is a frustum part. A sealing sleeve is arranged around the frustum part. The inner hole of the mating ring is frustum-shaped. Both the frustum inner hole and the frustum part of the mating ring are arranged with the larger end facing up and the smaller end facing down.

[0013] Preferably, the control structure includes a cross, which is arranged inside a circular tube. An electric push rod is arranged at the center of the top of the cross. A spring is arranged between the piston end at the bottom of the electric push rod and the top of the conical part. Four sets of limiting rods are arranged at equal intervals around the conical part, and the limiting rods pass through the corresponding side rods of the cross.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. This utility model features a collection box designed with three internal chambers divided by two sets of partitions. The circular pipes of the bottom ash hoppers in the baffle settling chamber, electrostatic precipitator, and bag filter chamber are connected to the corresponding chambers. A sealing structure is installed within these circular pipes. Therefore, when treating exhaust gas containing metal dust, the sealing structure can be opened, connecting the ash hopper to the internal chambers of the collection box. Metal dust particles filtered by the baffle settling chamber, electrostatic precipitator, and bag filter chamber will then fall directly into the internal chambers of the collection box through the circular pipes for storage. When ash discharge is required... The device can control the sealing structure to close the circular tube. At this time, the metal dust and other particles filtered by the baffle settling chamber, electrostatic dust removal chamber and filter bag dust removal chamber are directly stored in the ash hopper. Then, personnel can directly discharge the dust inside the collection box. During this process, the device works normally, thus achieving the effect of ash discharge without stopping the machine. This avoids the interruption of the treatment of waste gas containing metal dust caused by the machine stopping when discharging ash. It solves the technical problem that current modular devices for treating waste gas containing metal dust are not convenient for ash discharge without stopping the machine. Therefore, this utility model has the advantage of ash discharge without stopping the machine.

[0016] 2. The sealing structure of this utility model consists of a control structure and a sealing component. The lower part of the sealing block in the sealing component is a frustum, and the inner hole of the mating ring is also frustum-shaped. Both the frustum inner hole and the frustum of the mating ring are arranged with the larger end facing up and the smaller end facing down. Therefore, when the frustum of the sealing block is inserted into the inner hole of the frustum of the mating ring to seal the round pipe, the sealing block is pushed by the airflow, which can make the sealing block press more tightly into the inner hole of the frustum of the mating ring. This better ensures the sealing performance of the sealing structure on the round pipe and avoids dust leakage from the round pipe when the device is discharging ash without stopping the machine. Therefore, it can further ensure the effect of ash discharge without stopping the machine. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the cross-sectional structure of the ash hopper and circular tube of this utility model;

[0019] Figure 3 This is a schematic diagram of the sealing structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the first structure of the collection box of this utility model;

[0021] Figure 5 This is a schematic diagram of the second structure of the collection box of this utility model.

[0022] Explanation of the labels in the diagram:

[0023] 1. Support frame; 2. Baffle settling chamber; 201. Air inlet; 3. Electrostatic precipitator chamber; 4. Bag filter chamber; 401. Air outlet; 5. Dust hopper; 6. Circular tube; 7. Sealing structure; 8. Control structure; 801. Cross-shaped component; 802. Electric push rod; 803. Spring; 804. Limiting rod; 9. Sealing assembly; 10. Sealing block; 1001. Frustum; 1002. Conical part; 1003. Sealing sleeve; 11. Mating ring; 12. Collection box; 1201. Isolation plate; 1202. Docking hole; 1203. Storage box; 1204. Locking groove; 1205. Sealing door; 1206. Locking block; 1207. Lock; 1208. First sealing strip; 1209. Second sealing strip. Detailed Implementation

[0024] like Figures 1 to 5 As shown, this utility model relates to a modular device for treating exhaust gas containing metal dust, comprising a support frame 1. Inside the support frame 1, from left to right, are arranged a baffled settling chamber 2, an electrostatic precipitator 3, and a bag filter chamber 4. At the bottom of each of the baffled settling chamber 2, electrostatic precipitator 3, and bag filter chamber 4, there is a dust hopper 5. At the bottom of the support frame 1, a collection box 12 is arranged. A circular pipe 6 connects the collection boxes 12 at the bottom of the dust hoppers 5 of the baffled settling chamber 2, electrostatic precipitator 3, and bag filter chamber 4. A sealing element is arranged inside the circular pipe 6. Structure 7: The inside of the collection box 12 is divided into three cavities by two sets of isolation plates 1201, and the three cavities correspond to the baffle settling chamber 2, the electrostatic precipitator 3, and the filter bag dust collector 4. An air inlet 201 is arranged on the top of one side of the baffle settling chamber 2, and the outlet of the baffle settling chamber 2 on the side away from the air inlet 201 is connected to the electrostatic precipitator 3. The outlet of the electrostatic precipitator 3 on the side away from the baffle settling chamber 2 is connected to the filter bag dust collector 4. An air outlet 401 is arranged on the top of the side of the filter bag dust collector 4 on the side away from the electrostatic precipitator 3.

[0025] When treating exhaust gas containing metal dust, the exhaust gas enters the baffle settling chamber 2 through the inlet 201. In the baffle settling chamber 2, baffle collisions occur, and small particles in the exhaust gas collide and adhere to form large particles. The gas separates from the larger particles and continues to fall under the action of gravity. The larger particles fall into the ash hopper 5 below the baffle settling chamber 2. After the gas enters the electrostatic precipitator 3, the air molecules are ionized into positive ions and electrons. When the electrons encounter dust particles on their way to the positive electrode, the dust particles become negatively charged and are adsorbed onto the positive electrode and collected. Then the air enters the filter bag dust collector 4. After the filter bags filter and trap the remaining dust, the purified air is discharged through the outlet 401.

[0026] During normal operation, the sealing structure 7 is in the open state. Dust inside the baffle settling chamber 2, electrostatic precipitator 3, and filter bag dust collector 4 hopper 5 falls into the corresponding cavity of the collection box 12 through the circular pipe 6. When ash discharge is required, the sealing structure 7 can be controlled to close the circular pipe 6. At this time, the dust filtered by the baffle settling chamber 2, electrostatic precipitator 3, and filter bag dust collector 4 is directly stored in the ash hopper 5. Then, personnel can directly discharge the dust inside the cavity of the collection box 12. During this process, the device works normally, thus achieving the effect of ash discharge without stopping the machine and avoiding the interruption of the treatment of metal dust-containing waste gas when the device stops during ash discharge.

[0027] Specifically, the top of the collection box 12 has docking holes 1202 corresponding to the three sets of cavities. A sealing door 1205 is hinged to the front of the collection box 12. A first sealing strip 1208 is arranged around the sealing door 1205. A second sealing strip 1209 corresponding to the isolation plate 1201 is arranged on the inner side of the sealing door 1205. Two sets of symmetrical latches 1207 are arranged on the top front side of the sealing door 1205. A buckle block 1206 corresponding to the latches 1207 is arranged on the top front side of the collection box 12. The docking holes 1202 are used to dock with the round tube 6. The sealing door 1205 is open to facilitate the discharge of ash. The first sealing strip 1208 and the second sealing strip 1209 ensure the sealing of the sealing door 1205 after it is closed. After the sealing door 1205 is closed, the latches 1207 are fastened to the buckle block 1206 to fix the sealing door 1205.

[0028] Furthermore, each of the three cavities inside the collection box 12 contains a storage box 1203. The front of the storage box 1203 is provided with a latch 1204. Dust that falls into the cavity will directly enter the storage box 1203. When discharging dust, the storage box 1203 can be pulled out directly by holding the latch 1204, which is convenient for discharging dust.

[0029] In this embodiment of the present invention, the sealing structure 7 consists of a control structure 8 and a sealing assembly 9. The sealing assembly 9 is arranged at the top opening inside the circular tube 6, and the control structure 8 is arranged at the bottom opening inside the ash hopper 5. The sealing assembly 9 includes a sealing block 10 and a mating ring 11. The mating ring 11 is arranged at the top opening inside the circular tube 6, and the sealing block 10 is inserted into the mating ring 11. The top of the sealing block 10 is a conical part 1002, and the bottom of the sealing block 10 is a frustum part 1001. A sealing sleeve 1003 is arranged around the frustum part 1001. The inner hole of the mating ring 11 is frustum-shaped, and both the inner hole of the frustum of the mating ring 11 and the frustum part 1001 are arranged with the larger end facing up and the smaller end facing down; the control structure 8 includes a cross 801, which is arranged inside the circular tube 6. An electric push rod 802 is arranged at the top center of the cross 801. A spring 803 is arranged between the piston end at the bottom of the electric push rod 802 and the top of the conical part 1002. Four sets of limiting rods 804 are arranged equidistantly around the conical part 1002, and the limiting rods 804 pass through the corresponding side rods of the cross 801.

[0030] During the extension and retraction of the electric push rod 802, the sealing block 10 can be raised and lowered, thereby realizing the separation and insertion of the sealing block 10 and the mating ring 11. This allows for control of the opening and closing of the circular tube 6. The limit rod 804 is used to ensure the stability of the lifting and lowering of the sealing block 10. When the frustum 1001 of the sealing block 10 is inserted into the inner hole of the frustum of the mating ring 11 to seal the circular tube 6, the sealing block 10 is pushed by the airflow. With the cooperation of the spring 803, the sealing block 10 can be pressed more tightly into the inner hole of the frustum of the mating ring 11, thereby better ensuring the sealing performance of the sealing structure 7 on the circular tube 6 and preventing dust leakage from the circular tube 6 when the device is discharging ash without stopping the machine. Therefore, the effect of discharging ash without stopping the machine can be further guaranteed.

[0031] Working principle: This embodiment provides a modular device for treating exhaust gas containing metal dust. First, when treating exhaust gas containing metal dust, the exhaust gas enters the baffle settling chamber 2 through the inlet 201. In the baffle settling chamber 2, baffle collisions occur, and small particles in the exhaust gas collide and adhere to form large particles. The gas separates from the larger particles and continues to fall under the action of gravity. The larger particles fall into the ash hopper 5 below the baffle settling chamber 2. After the gas enters the electrostatic precipitator 3, the air molecules are ionized into positive ions and electrons. When the electrons encounter dust particles on their way to the positive electrode, the dust particles become negatively charged and are adsorbed onto the positive electrode and collected. Then the air enters the filter bag dust collector 4. After the filter bag filters out the remaining dust, the purified air is obtained and discharged through the outlet 401.

[0032] Secondly, during normal operation, the sealing structure 7 is in the open state, and the dust inside the baffle settling chamber 2, electrostatic precipitator 3, and filter bag dust collector 4 ash hopper 5 falls into the corresponding cavity of the collection box 12 through the circular pipe 6. When ash discharge is required, the sealing structure 7 can be controlled to close the circular pipe 6. At this time, the dust filtered by the baffle settling chamber 2, electrostatic precipitator 3, and filter bag dust collector 4 is directly stored in the ash hopper 5, and personnel can directly discharge the dust inside the cavity of the collection box 12. During this process, the device works normally, thus achieving the effect of ash discharge without stopping the machine, avoiding the interruption of the treatment of metal dust-containing exhaust gas when the device stops during ash discharge.

[0033] Finally, when the frustum portion 1001 of the sealing block 10 is inserted into the inner hole of the frustum of the mating ring 11 to seal the round tube 6, the sealing block 10 is pushed by the airflow, and with the cooperation of the spring 803, the sealing block 10 can be pressed more tightly into the inner hole of the frustum of the mating ring 11, thereby better ensuring the sealing performance of the sealing structure 7 to the round tube 6 and preventing dust leakage from the round tube 6 when the device is discharging ash without stopping the machine. Therefore, the effect of discharging ash without stopping the machine can be further guaranteed.

[0034] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this utility model based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this utility model, they are all within the protection scope of this utility model.

Claims

1. A modular device for treating waste gas containing metal dust, characterized in that, The system includes a support frame (1), which has a baffle settling chamber (2), an electrostatic precipitator (3) and a bag filter chamber (4) arranged side by side from left to right at the top. Each of the baffle settling chamber (2), the electrostatic precipitator (3) and the bag filter chamber (4) has a dust hopper (5) at the bottom. A collection box (12) is arranged at the bottom of the support frame (1). A round pipe (6) is connected between the collection boxes (12) at the bottom of the dust hoppers (5) of the baffle settling chamber (2), the electrostatic precipitator (3) and the bag filter chamber (4). A sealing structure (7) is arranged inside the round pipe (6). The inside of the collection box (12) is divided into three cavities by two sets of isolation plates (1201), and the three cavities correspond to the baffle settling chamber (2), the electrostatic precipitator (3) and the bag filter chamber (4). The sealing structure (7) consists of a control structure (8) and a sealing component (9). The sealing component (9) is arranged at the top opening inside the circular tube (6), and the control structure (8) is arranged at the bottom opening inside the ash hopper (5).

2. The modular device for treating waste gas containing metal dust according to claim 1, characterized in that, An air inlet (201) is arranged on the top of one side of the baffle settling chamber (2). The outlet of the baffle settling chamber (2) on the side away from the air inlet (201) is connected to the electrostatic precipitator (3). The outlet of the electrostatic precipitator (3) on the side away from the baffle settling chamber (2) is connected to the filter bag dust collector (4). An air outlet (401) is arranged on the top of the filter bag dust collector (4) on the side away from the electrostatic precipitator (3).

3. The modular device for treating waste gas containing metal dust according to claim 1, characterized in that, The top of the collection box (12) is provided with docking holes (1202) corresponding to the three sets of cavities. A sealing door (1205) is hinged to the front side of the collection box (12). A first sealing strip (1208) is arranged around the sealing door (1205). A second sealing strip (1209) corresponding to the isolation plate (1201) is arranged on the inner side of the sealing door (1205). Two sets of symmetrical latches (1207) are arranged on the top front side of the sealing door (1205). A buckle block (1206) corresponding to the latches (1207) is arranged on the top front side of the collection box (12).

4. The modular device for treating waste gas containing metal dust according to claim 1, characterized in that, The collection box (12) contains storage boxes (1203) in each of the three cavities inside, and the storage boxes (1203) have snap-fit ​​grooves (1204) on the front side.

5. The modular device for treating waste gas containing metal dust according to claim 1, characterized in that, The sealing assembly (9) includes a sealing block (10) and a mating ring (11). The mating ring (11) is arranged inside the top opening of the circular tube (6). The sealing block (10) is inserted into the mating ring (11). The top of the sealing block (10) is a conical part (1002), and the bottom of the sealing block (10) is a frustum part (1001). A sealing sleeve (1003) is arranged around the frustum part (1001). The inner hole of the mating ring (11) is frustum-shaped. The frustum inner hole of the mating ring (11) and the frustum part (1001) are both arranged with the larger end facing up and the smaller end facing down.

6. The modular device for treating waste gas containing metal dust according to claim 5, characterized in that, The control structure (8) includes a cross (801), which is arranged inside the round tube (6). An electric push rod (802) is arranged at the top center of the cross (801). A spring (803) is arranged between the piston end at the bottom of the electric push rod (802) and the top of the conical part (1002). Four sets of limiting rods (804) are arranged at equal intervals around the conical part (1002), and the limiting rods (804) pass through the corresponding side rods of the cross (801).

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