Waste gas treatment device for cast iron production

Abstract

The utility model discloses a waste gas treatment device for cast iron production, and belongs to the technical field of waste gas treatment. The device comprises a reaction box; the partition plate is arranged in the reaction box, the side wall of the partition plate is connected with the inner wall of the reaction box, the partition plate divides the reaction box into a second cavity and a first cavity which are arranged up and down, and a fifth through hole for communicating the first cavity with the second cavity is formed in the partition plate; the first cavity is filled with reaction liquid; the air inlet pipe is communicated with the first cavity; the stirring assembly is used for enabling the waste gas and the reaction liquid to fully react; the adsorption assembly is used for purifying waste gas; the air exhauster is arranged in the second cavity, and the air outlet end of the air exhauster is communicated with an exhaust pipe used for exhausting air into air. According to the waste gas treatment device, the stirring assembly is arranged to stir reaction liquid, so that the reaction rate of harmful substances in waste gas and treatment liquid is increased, and meanwhile, dust and particulate matters in the waste gas are retained in the reaction liquid.

Description

Technical Field

[0001] This utility model relates to the field of waste gas treatment technology, and in particular to a waste gas treatment device for cast iron production. Background Technology

[0002] Currently, foundries generate a large amount of industrial waste gas during the casting process. This waste gas includes: carbon dioxide, carbon disulfide, hydrogen sulfide, fluorides, nitrogen oxides, chlorine, hydrogen chloride, carbon monoxide, sulfuric acid (mist), lead, mercury, beryllium compounds, smoke, and industrial dust. Directly releasing these industrial waste gases into the air will severely pollute the surrounding environment and cause irreversible damage.

[0003] Chinese patent CN208436637U discloses a waste gas treatment device for injection molding machine template ductile iron parts production. In this device, a rotating motor drives a connecting rod to rotate, causing the gas to rotate within a conical shell. Large particles of impurities are separated from the airflow due to centrifugal force and gravity generated by the rotating airflow. The waste gas then passes through a coarse grid filter layer and an activated carbon filter layer to absorb medium-sized particles such as iron oxide. A main filter layer removes small particles such as metal oxides. The waste gas, after the second reaction, enters a chemical tank where toxic gases are completely reacted. However, this waste gas treatment method is cumbersome, structurally complex, time-consuming, and inefficient.

[0004] Therefore, it is necessary to develop a waste gas treatment device for cast iron production to address the aforementioned shortcomings. Utility Model Content

[0005] The purpose of this invention is to provide a waste gas treatment device for cast iron production, so as to solve the problems of cumbersome steps, complex structure, long time consumption and low efficiency in the existing waste gas treatment methods.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] This utility model discloses a waste gas treatment device for cast iron production, comprising:

[0008] reaction chamber;

[0009] A partition is installed inside the reaction chamber, the side wall of which is connected to the inner wall of the reaction chamber. The partition divides the reaction chamber into a second chamber and a first chamber arranged vertically. A fifth through hole is provided on the partition to connect the first chamber and the second chamber. The first chamber is filled with a reaction liquid.

[0010] An air inlet pipe in communication with the first cavity, an end of the air inlet pipe extending into the first cavity and bending downward to extend into the reaction liquid;

[0011] A stirring assembly for fully reacting the exhaust gas with the reaction liquid, the stirring assembly being arranged in the first cavity and rotationally connected to the bottom of the reaction tank;

[0012] An adsorption assembly for purifying the exhaust gas, the adsorption assembly being arranged in the second cavity and slidingly and sealingly connected to the inner wall of the second cavity;

[0013] An air extractor arranged in the second cavity, the air extractor being arranged at one side of the adsorption assembly, an air inlet end of the air extractor being in communication with an air outlet end of the adsorption assembly through an air guide pipe, and an air outlet end of the air extractor being in communication with an air outlet pipe for discharging the gas into the air.

[0014] Further, the reaction tank is provided with a first through hole for the air inlet pipe to enter at one side close to the air inlet pipe, a third through hole for rotationally connecting the stirring assembly at one side close to the stirring assembly at the bottom of the reaction tank, a second through hole for the air outlet pipe to extend out at one side close to the air outlet pipe, and a fourth through hole for the adsorption assembly to enter the second cavity at one side close to the adsorption assembly.

[0015] Further, the stirring assembly comprises:

[0016] A driving motor fixedly connected to the bottom of the reaction tank;

[0017] A stirring shaft rotationally connected to the third through hole through a bearing, a driving end of the driving motor extending into the third through hole and drivingly connected to the stirring shaft, and a plurality of stirring paddles being arranged on the stirring shaft at intervals.

[0018] Further, the stirring assembly further comprises a fixing member arranged between the partition plate and the air inlet pipe, one end of the fixing member being fixedly connected to the partition plate, and the other end of the fixing member being connected to the bent portion of the air inlet pipe.

[0019] Further, the stirring shaft and the stirring paddles are hollow structures, one end of the stirring shaft away from the driving motor being rotationally connected to the end of the air inlet pipe through a bearing, and a plurality of air outlet holes being arranged on the stirring paddles in an array; the air inlet pipe, the stirring shaft and the stirring paddles being in communication with each other, respectively.

[0020] Further, a plurality of first baffles and second baffles are arranged in the first cavity; the first baffles are vertically arranged at the bottom of the reaction box, the bottom end and the two side walls of the first baffles are respectively connected with the reaction box in a sealing mode, the top end of the first baffles is a free end and extends into the reaction liquid; the second baffles are vertically arranged on the partition plate, the top end of the second baffles is connected with the partition plate in a sealing mode, the two side walls of the second baffles are respectively connected with the reaction box in a sealing mode, the bottom end of the second baffles is a free end and extends into the reaction liquid; the first baffles and the second baffles are arranged in parallel and spaced from each other; the length of the first baffles and the second baffles is less than the height of the first cavity.

[0021] Further, the adsorption assembly comprises:

[0022] An adsorption box is arranged in the second cavity, the side wall of the adsorption box is connected with the side wall of the reaction box in a sliding sealing mode, the size of the adsorption box is matched with the size of the fourth through hole, a sixth through hole for allowing gas to enter is arranged on the side upper end of the adsorption box close to the fifth through hole, and a seventh through hole for allowing gas to discharge is arranged on the side lower end of the adsorption box away from the fifth through hole; a continuous bending filter layer is arranged in the adsorption box, the end part and the plurality of bending parts of the filter layer are respectively connected with the inner wall of the adsorption box; a handle is connected with the top of the adsorption box.

[0023] The utility model has the advantages of:

[0024] The utility model discloses a stirring assembly is set up to the reaction liquid is stirred, has improved the reaction rate of harmful substance in waste gas and treatment liquid, makes dust, particulate matter in waste gas to stay in the reaction liquid simultaneously, through setting up adsorption assembly, can further adsorb the harmful gas of remaining, has guaranteed that the gas of no pollution is discharged to the air finally. BRIEF DESCRIPTION OF DRAWINGS

[0025] The utility model will be further described below in combination with the drawings.

[0026] Figure 1 It is the main view structure inside schematic diagram for cast iron production waste gas treatment device of the utility model;

[0027] Figure 2 It is the enlarged structure section schematic diagram for A place in cast iron production waste gas treatment device of the utility model;

[0028] Figure 3 It is the three-dimensional structure schematic diagram for filter layer in cast iron production waste gas treatment device of the utility model.

[0029] Label: 1. Reaction box; 101. First through hole; 102. Second through hole; 103. Third through hole; 104. Fourth through hole; 2. Gas inlet pipe; 3. Fixing piece; 4. Stirring assembly; 401. Stirring shaft; 402. Stirring paddle; 403. Exhaust hole; 404. Driving motor; 5. First baffle; 6. Partition; 601. Fifth through hole; 7. Adsorption assembly; 701. Adsorption box; 7011. Sixth through hole; 7012. Seventh through hole; 702. Filter layer; 703. Handle; 8. Gas guide pipe; 9. Air extractor; 10. Exhaust pipe; 11. First cavity; 12. Second cavity; 13. Second baffle. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0031] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0032] Embodiment one

[0033] Please refer to Figure 1 The present application provides a technical scheme: a waste gas treatment device for cast iron production, comprising: a reaction box 1; a partition 6 arranged in the reaction box 1, the side wall of the partition 6 is connected with the inner wall of the reaction box 1, the partition 6 divides the reaction box 1 into a second cavity 12 and a first cavity 11 arranged in an upper and lower manner, a fifth through hole 601 for connecting the first cavity 11 and the second cavity 12 is formed in the partition 6; the first cavity 11 is filled with a reaction liquid; a gas inlet pipe 2 communicated with the first cavity 11, the end of the gas inlet pipe 2 extends to the inside of the first cavity 11 and bends downward to extend into the reaction liquid.

[0034] A stirring assembly 4 for making the waste gas and the reaction liquid fully react, the stirring assembly 4 is arranged in the first cavity 11, and the stirring assembly 4 is rotationally connected with the bottom of the reaction box 1.

[0035] An adsorption assembly 7 for purifying waste gas, the adsorption assembly 7 is inserted into the second cavity 12 and is in sliding sealing connection with the inner wall of the second cavity 12.

[0036] The air extractor 9 is arranged in the second cavity 12, and the air extractor 9 is arranged on one side of the adsorption assembly 7; the air inlet end of the air extractor 9 is communicated with the air outlet end of the adsorption assembly 7 through the air guide pipe 8; and the air outlet end of the air extractor 9 is communicated with the air exhaust pipe 10 for exhausting the gas into the air.

[0037] Compared with the prior art, the reaction liquid is stirred by the stirring assembly 4, so that the reaction rate of the harmful substances in the waste gas and the treatment liquid is improved, and the dust and particulate matters in the waste gas are retained in the reaction liquid; the residual harmful gas is further adsorbed by the adsorption assembly 7, so that the finally emitted gas is pollution-free.

[0038] Embodiment two

[0039] Please refer to Figures 1-3 On the basis of the embodiment one, the utility model provides a technical scheme: the first through hole 101 for making the air inlet pipe 2 enter is seted to the side of the reaction box 1 close to the air inlet pipe 2;The third through hole 103 for being rotatably connected with the stirring assembly 4 is seted to the bottom of the reaction box 1 close to the stirring assembly 4;The second through hole 102 for making the air exhaust pipe 10 extend is seted to the side of the reaction box 1 close to the air exhaust pipe 10;The fourth through hole 104 for making the adsorption assembly 7 enter the second cavity 12 is seted to the side of the reaction box 1 close to the adsorption assembly 7.

[0040] In this embodiment, the stirring assembly 4 comprises: the driving motor 404 fixedly connected with the bottom of the reaction box 1;The stirring shaft 401 rotatably connected with the third through hole 103 through the bearing, and the driving end of the driving motor 404 is inserted into the third through hole 103 and drivingly connected with the stirring shaft 401;A plurality of stirring paddles 402 are arranged on the stirring shaft 401 at intervals.

[0041] Compared with the prior art, the stirring shaft 401 is driven to rotate by the driving motor 404, and the plurality of stirring paddles 402 are driven to stir the reaction liquid, so that the reaction rate of the harmful substances in the waste gas and the treatment liquid is improved, and the dust and particulate matters in the waste gas are retained in the reaction liquid.

[0042] Embodiment three

[0043] Please refer to Figures 1-3 On the basis of the embodiment one and the embodiment two, the utility model provides a technical scheme: the waste gas treatment device for cast iron production further comprises the fixing piece 3, the fixing piece 3 is arranged between the partition plate 6 and the air inlet pipe 2, one end of the fixing piece 3 is fixedly connected with the partition plate 6, and the other end of the fixing piece 3 is connected with the bent part of the air inlet pipe 2, so that the structure of the air inlet pipe 2 is stable.

[0044] In the embodiment, the stirring shaft 401 and the stirring paddle 402 are hollow structures, the end of the stirring shaft 401 away from the driving motor 404 is rotatably connected with the end of the air inlet pipe 2 through a bearing, and a plurality of exhaust holes 403 are arranged on the stirring paddle 402 in an array; the air inlet pipe 2, the stirring shaft 401 and the stirring paddle 402 are in communication with each other. The waste gas enters the hollow stirring shaft 401 and the stirring paddle 402 in sequence through the air inlet pipe 2, and is finally discharged into the reaction liquid through the exhaust holes 403, and meanwhile the driving motor 404 drives the stirring shaft 401 to rotate to drive the plurality of stirring paddles 402 to stir the reaction liquid, thereby improving the reaction rate of the harmful substances in the waste gas and the treatment liquid, and at the same time, the dust and particulate matters in the waste gas are retained in the reaction liquid.

[0045] In the embodiment, the waste gas treatment device for cast iron production further comprises a plurality of first baffles 5 and second baffles 13 arranged in the first cavity 11; the first baffles 5 are vertically arranged at the bottom of the reaction box 1 at intervals, the bottom end and the two side walls of the first baffles 5 are sealingly connected with the reaction box 1, the top end of the first baffles 5 is a free end and extends into the reaction liquid; the second baffles 13 are vertically arranged on the partition plate 6 at intervals, the top end of the second baffles 13 is sealingly connected with the partition plate 6, the two side walls of the second baffles 13 are sealingly connected with the reaction box 1, and the bottom end of the second baffles 13 is a free end and extends into the reaction liquid; the first baffles 5 and the second baffles 13 are arranged in parallel at intervals; and the lengths of the first baffles 5 and the second baffles 13 are both less than the height of the first cavity 11. Compared with the prior art, the plurality of first baffles 5 and the second baffles 13 are arranged to make the waste gas pass through the reaction liquid for filtration and purification multiple times, thereby improving the purification effect.

[0046] In the embodiment, the adsorption assembly 7 comprises an adsorption box 701 arranged in the second cavity 12, the side wall of the adsorption box 701 is slidingly and sealingly connected with the side wall of the reaction box 1, the size of the adsorption box 701 matches the size of the fourth through hole 104, the adsorption box 701 is provided with a sixth through hole 7011 for gas entering at the upper end of one side of the adsorption box 701 close to the fifth through hole 601, and the adsorption box 701 is provided with a seventh through hole 7012 for gas discharging at the lower end of the other side of the adsorption box 701 away from the fifth through hole 601; a continuously bent filter layer 702 is arranged in the adsorption box 701, the end portion and the plurality of bending portions of the filter layer 702 are connected with the inner wall of the adsorption box 701 respectively; and a handle 703 is connected with the top of the adsorption box 701. Compared with the prior art, the filter layer 702 in the utility model is preferably an activated carbon filter layer, the residual harmful gas can be further adsorbed, and the waste gas needs to pass through the filter layer 702 multiple times to be discharged from the seventh through hole 7012, thereby ensuring that the finally discharged gas is pollution-free.

[0047] Embodiment four

[0048] The embodiment provides a use method of the waste gas treatment device for cast iron production, and is the use method of the waste gas treatment device for cast iron production provided in embodiment one, embodiment two or embodiment three, and is as follows.

[0049] The waste gas enters the reaction liquid from the air inlet pipe 2, meanwhile, the driving motor 404 drives the stirring shaft 401 to rotate to drive the plurality of stirring paddles 402 to stir the reaction liquid, so that the reaction rate of the harmful substances in the waste gas and the treatment liquid is improved, and dust and particulate matters in the waste gas are retained in the reaction liquid; then the waste gas passes through the plurality of first baffles 5 and the second baffles 13, so that the waste gas passes through the reaction liquid for filtration and purification for multiple times, and the purification effect is improved; then the waste gas enters the second cavity 12 from the fifth through hole 601, and under the action of the air extractor 9, enters the adsorption box 701 from the sixth through hole 7011, is adsorbed by the continuously bent filter layer 702 in the adsorption box 701 for multiple times, and is discharged from the seventh through hole 7012 to enter the air guide pipe 8, and is finally sucked into the exhaust pipe 10 by the air extractor to be discharged into the air.

[0050] The embodiments in the specification are described in a progressive manner, and each embodiment focuses on the difference from other embodiments, and the same or similar parts between the embodiments can be referred to each other. For the device disclosed by the embodiments, since the device corresponds to the method disclosed by the embodiments, the description is relatively simple, and the related parts can be referred to the method part.

[0051] The above-described embodiments only describe preferred modes of the utility model, and do not limit the scope of the utility model, and various deformations and improvements of the technical solutions of the utility model made by those skilled in the art without departing from the design spirit of the utility model should fall within the protection scope determined by the claims of the utility model.

Claims

1. An exhaust gas treatment device for cast iron production, characterized by comprising: The utility model relates to a reaction box for waste gas purification, comprising: a reaction box (1); a partition plate (6) arranged in the reaction box (1), a side wall of the partition plate (6) being connected with an inner wall of the reaction box (1), the partition plate (6) separating the reaction box (1) into a first cavity (11) and a second cavity (12) arranged in a top-bottom manner, a fifth through hole (601) being formed in the partition plate (6) for communication between the first cavity (11) and the second cavity (12), and the first cavity (11) being filled with a reaction liquid; a gas inlet pipe (2) in communication with the first cavity (11), an end of the gas inlet pipe (2) extending into the first cavity (11) and then bending downward to extend into the reaction liquid; a stirring assembly (4) for fully reacting the waste gas with the reaction liquid, the stirring assembly (4) being arranged in the first cavity (11) and rotationally connected with a bottom of the reaction box (1); an adsorption assembly (7) for purifying the waste gas, the adsorption assembly (7) being inserted into the second cavity (12) and being in sliding sealing connection with an inner wall of the second cavity (12); an air extractor (9) arranged in the second cavity (12), the air extractor (9) being arranged at one side of the adsorption assembly (7), an air inlet end of the air extractor (9) being in communication with an air outlet end of the adsorption assembly (7) through a gas guide pipe (8), and an air outlet end of the air extractor (9) being in communication with an air outlet pipe (10) for discharging the gas into the air.

2. The exhaust gas treatment device for cast iron production according to claim 1, characterized by, The reaction box (1) is provided with a first through hole (101) near one side of the gas inlet pipe (2) for the gas inlet pipe (2) to enter, the reaction box (1) is provided with a third through hole (103) near one side of the stirring assembly (4) at the bottom for rotationally connecting with the stirring assembly (4), the reaction box (1) is provided with a second through hole (102) near one side of the air outlet pipe (10) for the air outlet pipe (10) to extend out, and the reaction box (1) is provided with a fourth through hole (104) near one side of the adsorption assembly (7) for the adsorption assembly (7) to enter the second cavity (12).

3. The exhaust gas treatment device for cast iron production according to claim 2, characterized by, The stirring assembly (4) comprises: a driving motor (404) fixedly connected with the bottom of the reaction box (1); a stirring shaft (401) rotationally connected with the third through hole (103) through a bearing, a driving end of the driving motor (404) extending into the third through hole (103) and being drivingly connected with the stirring shaft (401), and a plurality of stirring paddles (402) being arranged at intervals on the stirring shaft (401).

4. The exhaust gas treatment device for cast iron production according to claim 3, characterized by The utility model further comprises a fixing member (3) arranged between the partition plate (6) and the gas inlet pipe (2), one end of the fixing member (3) being fixedly connected with the partition plate (6), and the other end of the fixing member (3) being connected with a bent portion of the gas inlet pipe (2).

5. The exhaust gas treatment device for cast iron production according to claim 3, characterized by, The stirring shaft (401) and the stirring paddle (402) are both hollow structures, one end of the stirring shaft (401) away from the driving motor (404) is rotatably connected with the end of the air inlet pipe (2) through a bearing, and a plurality of exhaust holes (403) are arranged on the stirring paddle (402); the air inlet pipe (2), the stirring shaft (401) and the stirring paddle (402) are in communication with each other respectively.

6. The exhaust gas treatment device for cast iron production according to claim 1, characterized by Further comprising a plurality of first baffles (5) and second baffles (13) arranged in the first cavity (11); wherein the first baffles (5) are vertically arranged at intervals on the bottom of the reaction box (1), the bottom end and the two side walls of the first baffles (5) are respectively sealingly connected with the reaction box (1), the top end of the first baffles (5) is a free end and extends into the reaction liquid; the second baffles (13) are vertically arranged at intervals on the partition plate (6), the top end of the second baffles (13) is sealingly connected with the partition plate (6), the two side walls of the second baffles (13) are respectively sealingly connected with the reaction box (1), the bottom end of the second baffles (13) is a free end and extends into the reaction liquid; the first baffles (5) and the second baffles (13) are arranged in parallel at intervals; the length of the first baffles (5) and the second baffles (13) is less than the height of the first cavity (11).

7. The exhaust gas treatment device for cast iron production according to claim 2, characterized by, The adsorption assembly (7) comprises: An adsorption box (701) arranged in the second cavity (12), the side wall of the adsorption box (701) is slidingly and sealingly connected with the side wall of the reaction box (1), the size of the adsorption box (701) matches the size of the fourth through hole (104), a sixth through hole (7011) for allowing gas to enter is formed on the upper end of one side of the adsorption box (701) close to the fifth through hole (601), and a seventh through hole (7012) for allowing gas to exit is formed on the lower end of one side of the adsorption box (701) away from the fifth through hole (601); a continuously bent filter layer (702) is arranged in the adsorption box (701), the end portion and a plurality of bent portions of the filter layer (702) are respectively connected with the inner wall of the adsorption box (701); a handle (703) is connected to the top of the adsorption box (701).

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