Chemical adding device for waste gas treatment

Abstract

The utility model discloses a dosing device for waste gas treatment, which relates to the field of waste gas treatment and comprises a spray tower body, a plurality of filler layers are uniformly arranged on the upper half section of an inner cavity of the spray tower body, a spray frame is arranged on the upper side of each filler layer, a waste gas inlet is arranged in the middle of the side wall of each filler layer, and a water inlet is formed in the middle of the side wall of each filler layer. A demisting net is arranged in the exhaust end of the spraying tower body, a centrifugal filtering seat is rotatably mounted on the lower half section of the inner wall of the spraying tower body, water mist pumped out from the liquid medicine atomizing nozzle pushes the mist catching net to rotate, so that the centrifugal filtering seat is driven to continuously rotate, and when the centrifugal filtering seat rotates, water mist of waste liquid and neutralization liquid is adsorbed and gathered through the mist catching net; after the waste liquid and the neutralization liquid react, precipitates are centrifugally separated through rotation of the centrifugal filtering seat, the separated waste liquid falls into the inner bottom of the filler layer and can be sprayed again for use, the waste liquid does not need to be conveyed out for treatment, and the water consumption during waste gas treatment is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas treatment, in particular to a chemical dosing device for waste gas treatment. Background Art

[0002] A spray tower is a device used for environmentally treating waste gas. Dust-containing waste gas, oil-containing waste gas, and toxic gas generated during the process of factory production and manufacturing of products are introduced into the spray tower. Inside the spray tower, circulating water, alkali solution, or acid solution is provided to filter, adsorb, neutralize, and wash the waste gas. After the waste gas contacts the liquid medium inside the spray tower, toxic and harmful substances are left behind, and non-toxic, harmless, and pollution-free gas is discharged. In the existing environmentally friendly spray tower for waste gas treatment, waste gas is introduced at the bottom for packing filtration. After multi-layer spray treatment reaches the national standard, it is discharged upward, and the treated liquid is recycled and reprocessed.

[0003] During waste gas spray treatment, harmful impurities in the waste gas are washed and adsorbed by the spray tower, and the harmful substances are dissolved in the treatment liquid. The waste liquid adsorbed with harmful substances needs to be neutralized and filtered before it can be reused. When the waste liquid is exported for reprocessing, an adsorption liquid also needs to be continuously supplied, requiring a large amount of adsorption liquid, which increases the water consumption for waste gas treatment. For this reason, we propose a chemical dosing device for waste gas treatment. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the problem that during waste gas spray treatment, harmful impurities in the waste gas are washed and adsorbed by the spray tower, the harmful substances are dissolved in the treatment liquid, the waste liquid adsorbed with harmful substances needs to be neutralized and filtered before it can be reused, when the waste liquid is exported for reprocessing, an adsorption liquid also needs to be continuously supplied, requiring a large amount of adsorption liquid, which increases the water consumption for waste gas treatment. The utility model provides a chemical dosing device for waste gas treatment.

[0005] The utility model specifically adopts the following technical solutions to achieve the above purpose:

[0006] A chemical dosing device for waste gas treatment includes a spray tower body. In the upper half of the inner cavity of the spray tower body, there are multiple layers of packing layers evenly arranged, and a spray rack is arranged on the upper side of each packing layer. In the middle of the side wall of the packing layer, there is a waste gas inlet, and a demisting net is arranged inside the exhaust end of the spray tower body. A centrifugal filter seat is rotatably installed on the lower half of the inner wall of the spray tower body, and a central liquid delivery pipe is fixedly connected to the center of the centrifugal filter seat. A plurality of demisting nets are fixedly connected to the outer wall of the central liquid delivery pipe in a circular array, and a plurality of liquid medicine atomizing nozzles are arranged on the counterclockwise side of the outer walls of the plurality of demisting nets. The bottom of the central liquid delivery pipe is connected to a chemical dosing pump through a rotary joint.

[0007] Further, one side of the spray tower body is fixedly connected with a neutralizing liquid storage tank, and the dosing pump is fixedly installed at the upper end of the neutralizing liquid storage tank. The liquid inlet pipe of the dosing pump penetrates through the neutralizing liquid storage tank and is arranged close to the bottom of the inner cavity of the neutralizing liquid storage tank. The output pipeline of the dosing pump penetrates through the side wall of the packing layer and is communicated with the liquid inlet end of the rotary joint.

[0008] Further, the centrifugal filtration seat is in a funnel-shaped structure with a large opening facing upwards. A waste filtration ring groove is fixedly connected to the inner wall of the packing layer corresponding to the upper edge of the centrifugal filtration seat. A large-diameter bearing is fixedly connected between the upper end of the outer wall of the centrifugal filtration seat and the upper end of the inner wall of the waste filtration ring groove.

[0009] Further, a connecting convex edge is fixedly connected to the upper end of the outer wall of the centrifugal filtration seat, and the connecting convex edge extends towards the center of the upper end of the waste filtration ring groove.

[0010] Further, a liquid guiding hopper is fixedly connected to the middle part inside the packing layer, and the small end of the liquid guiding hopper faces downwards. The radius of the small end of the liquid guiding hopper is smaller than the radius of the upper end of the centrifugal filtration seat.

[0011] Further, medicine atomizing discharge seats are fixedly connected to the upper side and the middle part of the counterclockwise side of the mist-catching net. A plurality of liquid medicine atomizing nozzles are equally spaced on the clockwise side of the liquid medicine atomizing nozzles. A plurality of medicine atomizing discharge seats are all communicated with the inner cavity of the central liquid delivery pipe, and a plurality of liquid medicine atomizing nozzles are communicated with the inner cavities of the corresponding medicine atomizing discharge seats.

[0012] Further, a waste cleaning port is opened at the middle part of the side wall of the packing layer corresponding to the upper edge of the waste filtration ring groove, and a waste discharge door is fixedly connected to the waste cleaning port through a hinge.

[0013] The beneficial effects of the present utility model are as follows:

[0014] 1. Through the provided spray tower body, the packing layer and the spray rack inside the spray tower body can cooperate to wash the waste gas, adsorb and remove harmful substances in the waste gas. Through the provided dosing pump, the dosing pump can continuously pump in high-pressure neutralizing liquid. The neutralizing liquid is sent into a plurality of liquid medicine atomizing nozzles through the central liquid delivery pipe and pumped out. The water mist pumped out at the liquid medicine atomizing nozzles pushes the mist-catching net to rotate, thereby driving the centrifugal filtration seat to continuously rotate. When the centrifugal filtration seat rotates, it adsorbs and accumulates the water mist of the waste liquid and the neutralizing liquid through the mist-catching net. The precipitate after the reaction of the waste liquid and the neutralizing liquid is centrifugally separated by the rotation of the centrifugal filtration seat. The separated waste liquid falls into the inner bottom of the packing layer and can be used for spraying again without being transported out for treatment, reducing the water consumption during waste gas treatment. And the separation of the precipitate is driven by the push of the medicine spraying, without the need to additionally increase driving equipment and driving energy, which is more energy-saving and environmentally friendly.

[0015] 2. The utility model is provided with a waste filtering ring groove. The waste filtering ring groove can be rotationally matched with the outer wall of the centrifugal filtering seat. At the same time, the funnel-shaped structure of the centrifugal filtering seat can throw the sediment out along the inner side wall of the centrifugal filtering seat and fall into the waste filtering ring groove for collection. While ensuring the smoothness of the centrifugal filtering seat, it is convenient for the subsequent treatment of the sediment.

[0016] 3. The utility model is provided with a medicine atomizing discharge seat. The medicine atomizing discharge seat can facilitate the installation of the liquid medicine atomizing nozzle and improve the structural strength of the mist-catching net at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a three-dimensional view of the utility model;

[0018] Figure 2 is a front cross-sectional view of the utility model;

[0019] Figure 3 is the utility model Figure 2 an enlarged view of part A in;

[0020] Figure 4 is a top cross-sectional view of the utility model.

[0021] REFERENCE SIGNS: 1. Spray tower body; 2. Packing layer; 3. Spray rack; 4. Demisting net; 5. Exhaust gas inlet; 6. Neutralizing liquid storage tank; 7. Chemical dosing pump; 8. Waste filtering ring groove; 9. Centrifugal filtering seat; 10. Central liquid delivery pipe; 11. Mist-catching net; 12. Medicine atomizing discharge seat; 13. Liquid medicine atomizing nozzle; 14. Rotary joint; 15. Liquid guiding hopper; 16. Waste discharge door. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] In order to make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.

[0023] Please refer to Figure 1 - Figure 4 , the present utility model provides a chemical dosing device for waste gas treatment, including a spray tower body 1. There are multiple layers of packing layers 2 evenly arranged in the upper half of the inner cavity of the spray tower body 1, and a spray rack 3 is arranged on the upper side of each packing layer 2. An exhaust gas inlet 5 is arranged in the middle of the side wall of the packing layer 2, and a demisting net 4 is arranged in the exhaust end of the spray tower body 1. A centrifugal filtering seat 9 is rotatably installed on the lower half of the inner wall of the spray tower body 1, and a central liquid delivery pipe 10 is fixedly connected to the center of the centrifugal filtering seat 9. A plurality of mist-catching nets 11 are fixedly connected to the outer wall of the central liquid delivery pipe 10 in an annular array, and a plurality of liquid medicine atomizing nozzles 13 are arranged on the counterclockwise side of the outer walls of the plurality of mist-catching nets 11. The bottom of the central liquid delivery pipe 10 is connected to a chemical dosing pump 7 through a rotary joint 14.

[0024] In this embodiment, preferably, a neutralizing liquid storage tank 6 is fixedly connected to one side of the spray tower body 1, and a dosing pump 7 is fixedly installed at the upper end of the neutralizing liquid storage tank 6. The liquid inlet pipe of the dosing pump 7 penetrates through the neutralizing liquid storage tank 6 and is arranged close to the bottom of the inner cavity of the neutralizing liquid storage tank 6. The output pipeline of the dosing pump 7 penetrates through the side wall of the packing layer 2 and is communicated with the liquid inlet end of the rotary joint 14; by providing the neutralizing liquid storage tank 6, the neutralizing liquid storage tank 6 can store the neutralizing liquid medicine.

[0025] In this embodiment, preferably, the centrifugal filter base 9 is in the shape of a bucket with a large opening facing upwards. A waste filter ring groove 8 is fixedly connected to the inner wall of the packing layer 2 corresponding to the upper edge of the centrifugal filter base 9. A large-diameter bearing is fixedly connected between the upper end of the outer wall of the centrifugal filter base 9 and the upper end of the inner wall of the waste filter ring groove 8; by providing the waste filter ring groove 8, the waste filter ring groove 8 can be rotationally matched with the outer wall of the centrifugal filter base 9. At the same time, the bucket-shaped structure of the centrifugal filter base 9 can throw the sediment along the inner side wall of the centrifugal filter base 9 and fall into the waste filter ring groove 8 for collection. While ensuring the smoothness of the centrifugal filter base 9, it is convenient for the subsequent treatment of the sediment.

[0026] In this embodiment, preferably, a connecting convex edge is fixedly connected to the upper end of the outer wall of the centrifugal filter base 9, and the connecting convex edge extends towards the center of the upper end of the waste filter ring groove 8; by providing the connecting convex edge, the connecting convex edge can limit the position of the upper end of the centrifugal filter base 9, making the rotation of the centrifugal filter base 9 more stable. At the same time, setting it towards the upper side of the waste filter ring groove 8 can prevent sediment from entering the bearing and jamming the bearing.

[0027] In this embodiment, preferably, a liquid guide hopper 15 is fixedly connected to the middle part inside the packing layer 2, and the small end of the liquid guide hopper 15 faces downwards. The radius of the small end of the liquid guide hopper 15 is smaller than the radius of the upper end of the centrifugal filter base 9; by providing the liquid guide hopper 15, the liquid guide hopper 15 can guide the waste liquid dripping from the upper side into the centrifugal filter base 9, reducing the waste liquid entering the waste filter ring groove 8 and ensuring the treatment effect of the waste liquid.

[0028] In this embodiment, preferably, medicine atomizing discharge seats 12 are fixedly connected to the upper side and the middle part of the counterclockwise side of the mist-catching net 11, and a plurality of liquid medicine atomizing nozzles 13 are equally spaced on the clockwise side of the liquid medicine atomizing nozzles 13. A plurality of medicine atomizing discharge seats 12 are all communicated with the inner cavity of the central liquid delivery pipe 10, and a plurality of liquid medicine atomizing nozzles 13 are communicated with the inner cavity of the corresponding medicine atomizing discharge seat 12; by providing the medicine atomizing discharge seats 12, the medicine atomizing discharge seats 12 can facilitate the installation of the liquid medicine atomizing nozzles 13 while improving the structural strength of the mist-catching net 11.

[0029] In this embodiment, preferably, a waste cleaning port is provided in the middle of the side wall of the packing layer 2 corresponding to the upper edge of the waste filtering annular groove 8, and a waste discharging door 16 is fixedly connected to the waste cleaning port through a hinge; by providing the waste discharging door 16, the waste discharging door 16 can be regularly opened to clean the sediment in the waste filtering annular groove 8, facilitating waste discharging treatment.

[0030] The working principle and usage process of the present utility model: When the device is in use, through the provided spray tower body 1, the packing layer 2 and the spray rack 3 in the spray tower body 1 can cooperate to wash the waste gas, adsorbing and removing harmful substances in the waste gas. Through the provided chemical dosing pump 7, the chemical dosing pump 7 can continuously pump in high-pressure neutralizing liquid, and the neutralizing liquid is sent into a plurality of liquid medicine atomizing nozzles 13 through the central liquid delivery pipe 10 and pumped out. The water mist pumped out at the liquid medicine atomizing nozzle 13 drives the mist-catching net 11 to rotate, thereby driving the centrifugal filtering seat 9 to continuously rotate. When the centrifugal filtering seat 9 rotates, it adsorbs and accumulates the water mist of the waste liquid and the neutralizing liquid through the mist-catching net 11. After the waste liquid and the neutralizing liquid react, the sediment is centrifugally separated by the rotation of the centrifugal filtering seat 9. The separated waste liquid falls into the inner bottom of the packing layer 2 and can be sprayed again for use without being transported out for treatment, reducing the water consumption during waste gas treatment. Moreover, the separation of the sediment is driven by the push of the chemical dosing spray, without the need to additionally increase driving equipment and driving energy, which is more energy-saving and environmentally friendly.

[0031] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present utility model. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present utility model. Therefore, the present utility model will not be limited to these embodiments shown herein, but rather will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A dosing device for waste gas treatment, comprising a spray tower body (1), wherein the upper half of the inner cavity of the spray tower body (1) is evenly provided with multiple packing layers (2), and a spray rack (3) is arranged on the upper side of each packing layer (2), a waste gas inlet (5) is arranged in the middle of the side wall of the packing layer (2), and a demisting net (4) is arranged in the exhaust end of the spray tower body (1), characterized in that: A centrifugal filter seat (9) is rotatably mounted on the lower half of the inner wall of the spray tower body (1), and a central infusion pipe (10) is fixedly connected to the center of the centrifugal filter seat (9), and a plurality of mist catching nets (11) are fixedly connected to the outer wall of the central infusion pipe (10) in a circular array, and a plurality of liquid medicine atomizing nozzles (13) are arranged on the counterclockwise side of the outer walls of the plurality of mist catching nets (11), and a dosing pump (7) is connected to the bottom of the central infusion pipe (10) via a rotating joint (14).

2. A dosing device for waste gas treatment according to claim 1, characterized in that: A neutralizing liquid storage tank (6) is fixedly connected to one side of the spray tower body (1), and a dosing pump (7) is fixedly installed at the upper end of the neutralizing liquid storage tank (6). The liquid inlet pipe of the dosing pump (7) passes through the neutralizing liquid storage tank (6) and is arranged near the bottom of the inner cavity of the neutralizing liquid storage tank (6). The output pipe of the dosing pump (7) passes through the side wall of the packing layer (2) and is connected to the liquid inlet end of the rotary joint (14).

3. The dosing device for waste gas treatment according to claim 1, characterized in that: The centrifugal filter seat (9) is a bucket-shaped structure with a large mouth facing upwards; the inner wall of the packing layer (2) is fixedly connected to a waste filter annular groove (8) corresponding to the upper edge of the centrifugal filter seat (9); and a large-diameter bearing is fixedly connected between the upper end of the outer wall of the centrifugal filter seat (9) and the upper end of the inner wall of the waste filter annular groove (8).

4. A dosing device for waste gas treatment according to claim 3, characterized in that: A connecting convex edge is fixedly connected to the upper end of the outer wall of the centrifugal filter seat (9), and the connecting convex edge is extended toward the center of the upper end of the waste filter ring groove (8).

5. The dosing device for waste gas treatment according to claim 1, characterized in that: A liquid guide hopper (15) is fixedly connected to the middle of the inner portion of the packing layer (2), and the small end of the liquid guide hopper (15) is arranged downward, and the radius of the small end of the liquid guide hopper (15) is smaller than the radius of the upper end of the centrifugal filter seat (9).

6. The dosing device for waste gas treatment according to claim 1, characterized in that: The upper side and the middle part of the counterclockwise side of the mist catching net (11) are fixedly connected to a medicine atomization row seat (12), and a plurality of medicine liquid atomization nozzles (13) are evenly spaced and distributed on the clockwise side of the medicine liquid atomization nozzles (13). The plurality of medicine atomization rows (12) are all connected to the inner cavity of the central infusion tube (10), and the plurality of medicine liquid atomization nozzles (13) are connected to the inner cavities of the corresponding medicine atomization rows (12).

7. The dosing device for waste gas treatment according to claim 3, characterized in that: A waste removal opening is provided in the middle of the side wall of the packing layer (2) corresponding to the upper edge of the waste filtering ring groove (8), and a waste discharge door (16) is fixedly connected to the waste removal opening via a hinge.

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