Exhaust gas treatment system

Abstract

The application discloses a waste gas treatment system, comprising: a wet dust collector, provided with a drain pipe and a backwater pipe, the drain pipe is arranged at the bottom of the wet dust collector, and the backwater pipe is arranged on the upper side wall of the wet dust collector; a sedimentation device connected with the drain pipe, the sedimentation device is provided with a first water outlet pipe and a second water outlet pipe; a pump group comprising a first water pump and a second water pump, the first water pump is provided with a first water inlet end and a first water outlet end, the second water pump is provided with a second water inlet end and a second water outlet end, the first water inlet end and the second water inlet end are connected with the first water outlet pipe and the second water outlet pipe respectively, the first water outlet end and the second water outlet end are connected with the backwater pipe respectively, and the first water outlet end and the second water outlet end are respectively provided with a first valve and a second valve; a controller connected with the first water pump, the second water pump, the first valve and the second valve.

Description

Technical Field

[0001] This application relates to the field of waste gas treatment technology, and in particular to a waste gas treatment system. Background Technology

[0002] The production process of the thermally sprayed iron layer on the bottom of aluminum alloy cookware generates dust and exhaust gas, which is collected and treated outdoors using a wet scrubber. The wet scrubber's spray tower is placed above a water tank, with spray water flowing directly into the tank. A water pump then supplies water to the spray tower, creating a circulating water system. Inside the spray tower, the atomized water mixes with the exhaust gas to settle the dust. However, a large amount of iron powder flows with the spray water into a water tank below the tower, forming sediment. This necessitates frequent manual tank cleaning and can easily clog and wear down the circulating water pump. Furthermore, if the pump malfunctions, water can overflow from the water tank, affecting the stability and reliability of production. Utility Model Content

[0003] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes an exhaust gas treatment system that not only reduces the water pump failure rate and maintenance costs, but also ensures normal water circulation through a backup water pump when the main pump malfunctions. Furthermore, it eliminates the need for frequent tank cleaning, reducing the labor intensity of sludge removal operations and improving work efficiency.

[0004] The waste gas treatment system according to the embodiments of this application includes: a wet scrubber for connecting to an inlet pipe, the wet scrubber being provided with a drain pipe and a return water pipe, the drain pipe being located at the bottom of the wet scrubber and the return water pipe being located on the upper side wall of the wet scrubber; a sedimentation device connected to the drain pipe, the sedimentation device being provided with a first outlet pipe and a second outlet pipe; a pump set including a first water pump and a second water pump, the first water pump being provided with a first inlet end and a first outlet end, the second water pump being provided with a second inlet end and a second outlet end, the first inlet end and the second inlet end being respectively connected to the first outlet pipe and the second outlet end, the first outlet end and the second outlet end being respectively connected to the return water pipe, the first outlet end and the second outlet end being respectively provided with a first valve and a second valve; and a controller connected to the first water pump, the second water pump, the first valve and the second valve.

[0005] The waste gas treatment system according to the embodiments of this application has at least the following beneficial effects: During operation, the controller drives the first water pump to move and the first valve is opened; dusty waste gas enters the wet scrubber from the inlet pipe, and the spray atomized water of the wet scrubber mixes with the dusty waste gas. At this time, the dust and water form a mixed water that is discharged from the drain pipe; the mixed water is filtered and settled by the sedimentation device to obtain filtered water, and the filtered water flows into the first water pump from the first water inlet through the first water outlet pipe, and then enters the return water pipe from the first water inlet to return to the wet scrubber, thereby realizing water circulation; wherein, when the first water pump stops abnormally, the controller drives the second water pump, which is used as a backup water pump, to run, and the second valve is opened, and the filtered water flows into the second water pump from the second water inlet through the second water outlet pipe, and then enters the return water pipe from the second water inlet to return to the wet scrubber, thereby ensuring the smooth operation of water circulation. The exhaust gas treatment system described in this application not only reduces the failure rate and maintenance costs of water pumps, but also ensures normal water circulation by using a backup water pump when the water pump malfunctions. Furthermore, it eliminates the need for frequent tank cleaning, reducing the labor intensity of sludge removal operations and improving work efficiency.

[0006] According to the waste gas treatment system described in the embodiments of this application, the return water pipe is equipped with a third valve, and the third valve is connected to the controller.

[0007] According to the waste gas treatment system described in the embodiments of this application, the return water pipe is provided with a first branch pipe and a second branch pipe, and the wet dust collector is provided with a first return water port and a second return water port arranged vertically. The first return water port and the second return water port are respectively connected to the first branch pipe and the second branch pipe. The first branch pipe and the second branch pipe are respectively provided with a fourth valve and a fifth valve, and the fourth valve and the fifth valve are respectively connected to the controller.

[0008] According to the waste gas treatment system described in the embodiments of this application, multiple wet dust collectors are provided, and multiple first water pumps are provided accordingly. The first water pumps correspond one-to-one with the wet dust collectors, and the multiple wet dust collectors are respectively connected to the second water pumps.

[0009] The waste gas treatment system according to the embodiments of this application further includes an open channel, which is set on the ground, and the drain pipe is connected to the open channel and the open channel is connected to the sedimentation device.

[0010] According to the waste gas treatment system described in the embodiments of this application, the sedimentation device includes a primary sedimentation tank, a secondary sedimentation tank, and a tertiary sedimentation tank connected in sequence. The primary sedimentation tank is connected to the open channel, and the first effluent pipe and the second effluent pipe are respectively installed in the tertiary sedimentation tank.

[0011] According to the waste gas treatment system described in the embodiments of this application, the inlets and outlets of the primary sedimentation tank and the secondary sedimentation tank are staggered.

[0012] According to the waste gas treatment system described in the embodiments of this application, the sedimentation device is configured as an open-air structure, and a detachable fence is provided around the sedimentation device.

[0013] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0014] The present application will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 This is a schematic diagram of the structure of the waste gas treatment system according to an embodiment of this application.

[0015] Figure label: 100 wet dust collector; 110 air inlet pipe; 120 drain pipe; 130 return water pipe; 140 third valve; 150 first branch pipe; 160 second branch pipe; 170 fourth valve; 180 fifth valve; 200 sedimentation device; 210 first outlet water pipe; 220 second outlet water pipe; 230 primary sedimentation tank; 240 secondary sedimentation tank; 250 tertiary sedimentation tank; 310 first water pump; 320 second water pump; 330 first valve; 340 second valve; 400 open channel. Detailed Implementation

[0016] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0017] In the description of this application, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0018] In the description of this application, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0019] In the description of this application, unless otherwise expressly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly. Those skilled in the art can reasonably determine the specific meaning of these terms in this application based on the specific content of the technical solution. In the description of this application, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples. In the description of this specification, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0020] Reference Figure 1This application provides a waste gas treatment system, including: a wet scrubber 100 for connecting to an inlet pipe 110, the wet scrubber 100 being provided with a drain pipe 120 and a return water pipe 130, the drain pipe 120 being located at the bottom of the wet scrubber 100 and the return water pipe 130 being located on the upper side wall of the wet scrubber 100; a sedimentation device 200 connected to the drain pipe 120, the sedimentation device 200 being provided with a first outlet water pipe 210 and a second outlet water pipe 220; and a pump set including a first water pump 310 and a second water pump 320. 20. The first water pump 310 is provided with a first water inlet and a first water outlet, and the second water pump 320 is provided with a second water inlet and a second water outlet. The first water inlet and the second water inlet are respectively connected to the first water outlet pipe 210 and the second water outlet. The first water outlet and the second water outlet are respectively connected to the return water pipe 130. The first water outlet and the second water outlet are respectively provided with a first valve 330 and a second valve 340. A controller is connected to the first water pump 310, the second water pump 320, the first valve 330 and the second valve 340.

[0021] During operation, the controller drives the first water pump 310 to operate, and the first valve 330 is opened. Dust-laden exhaust gas enters the wet scrubber 100 through the inlet pipe 110. The sprayed atomized water from the wet scrubber 100 mixes with the dust-laden exhaust gas. At this time, the dust and water form a mixed water that is discharged from the drain pipe 120. The mixed water is filtered and settled by the sedimentation device 200 to obtain filtered water. The filtered water flows from the first inlet end into the first water pump 310 through the first outlet pipe 210, and then enters the return water pipe 130 from the first inlet end to return to the wet scrubber 100, thereby realizing water circulation. When the first water pump 310 stops abnormally, the controller drives the second water pump 320, which serves as a backup water pump, to operate, and the second valve 340 is opened. The filtered water then flows from the second inlet end into the second water pump 320 through the second outlet pipe 220, and then enters the return water pipe 130 from the second inlet end to return to the wet scrubber 100, thereby ensuring the smooth operation of water circulation. The exhaust gas treatment system described in this application not only reduces the failure rate and maintenance costs of water pumps, but also ensures normal water circulation by using a backup water pump when the water pump malfunctions. Furthermore, it eliminates the need for frequent tank cleaning, reducing the labor intensity of sludge removal operations and improving work efficiency.

[0022] It should be noted that the wet dust collector 100 uses existing equipment and belongs to existing technology, which will not be elaborated upon in this application.

[0023] It should also be noted that the controller's control method is simply trigger control. Therefore, the controller's control method is not within the scope of protection of this application and belongs to the prior art. This application mainly protects the connection relationship between the various components.

[0024] Reference Figure 1Furthermore, the exhaust gas treatment system also includes an open channel 400, which is located on the ground. A drain pipe 120 connects to the open channel 400, and the open channel 400 is connected to a sedimentation device 200. The width and depth of the open channel 400 are designed to allow the spray water from the wet scrubber 100 to flow smoothly into the sedimentation device 200. It is conceivable that the side walls of the open channel 400 are equipped with water-retaining barriers, and the height of these barriers is at least 100 mm above the ground, thereby preventing water from overflowing from the open channel 400.

[0025] It is conceivable that the return water pipe 130 is equipped with a third valve 140, which is connected to the controller. The third valve 140 allows for control of the flow of the return water pipe 130, resulting in a simple structure and easy operation. Furthermore, the return water pipe 130 is equipped with a first branch pipe 150 and a second branch pipe 160. The wet scrubber 100 has a first return water inlet and a second return water inlet arranged vertically, connected to the first branch pipe 150 and the second branch pipe 160 respectively. The first branch pipe 150 and the second branch pipe 160 are each equipped with a fourth valve 170 and a fifth valve 180, which are also connected to the controller. By sending water back to the wet scrubber 100 through the first branch pipe 150 and the second branch pipe 160, dust removal efficiency, stability, and reliability can be improved.

[0026] In this embodiment, multiple wet scrubbers 100 are provided, and multiple first water pumps are correspondingly provided. Each first water pump corresponds to one wet scrubber 100, and each of the multiple wet scrubbers 100 is connected to a second water pump. By using multiple wet scrubbers 100 to perform dust removal simultaneously, the dust removal efficiency can be improved.

[0027] Reference Figure 1 In some embodiments of this application, the sedimentation device 200 includes a primary sedimentation tank 230, a secondary sedimentation tank 240, and a tertiary sedimentation tank 250 connected in sequence. The primary sedimentation tank 230 is connected to an open channel 400, and the first outlet pipe 210 and the second outlet pipe 220 are respectively installed in the tertiary sedimentation tank 250. By performing three-stage sedimentation filtration on the mixed water, the sedimentation effect can be improved, the water pump failure rate and maintenance costs can be reduced, and the working efficiency can be improved. The inlets and outlets of the primary sedimentation tank 230 and the secondary sedimentation tank 240 are staggered to further improve the sedimentation efficiency.

[0028] In this embodiment, the sedimentation device 200 is designed as an open-air structure, and a removable fence is installed around it. The height of the removable fence is at least 100 mm above the ground to prevent water from overflowing the sedimentation device 200. A easily removable fence is also built outside the water-retaining enclosure. The removable fence provides a certain level of protection, and when cleaning the sedimentation device 200, simply removing the removable fence allows a mini excavator to quickly remove the sediment, saving manpower and improving efficiency.

[0029] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application.

Claims

1. A waste gas treatment system, characterized in that, include: A wet scrubber is used to connect to an air inlet pipe. The wet scrubber is equipped with a drain pipe and a return water pipe. The drain pipe is located at the bottom of the wet scrubber, and the return water pipe is located on the upper side wall of the wet scrubber. A sedimentation device is connected to the drain pipe, and the sedimentation device is provided with a first outlet pipe and a second outlet pipe; The pump set includes a first water pump and a second water pump. The first water pump is provided with a first water inlet and a first water outlet. The second water pump is provided with a second water inlet and a second water outlet. The first water inlet and the second water inlet are respectively connected to the first water outlet pipe and the second water outlet. The first water outlet and the second water outlet are respectively connected to the return water pipe. The first water outlet and the second water outlet are respectively provided with a first valve and a second valve. The controller is connected to the first water pump, the second water pump, the first valve, and the second valve.

2. The waste gas treatment system according to claim 1, characterized in that, The return water pipe is equipped with a third valve, which is connected to the controller.

3. The waste gas treatment system according to claim 2, characterized in that, The return water pipe is provided with a first branch pipe and a second branch pipe. The wet dust collector is provided with a first return water port and a second return water port arranged vertically. The first return water port and the second return water port are respectively connected to the first branch pipe and the second branch pipe. The first branch pipe and the second branch pipe are respectively provided with a fourth valve and a fifth valve. The fourth valve and the fifth valve are respectively connected to the controller.

4. The waste gas treatment system according to claim 1, characterized in that, Multiple wet dust collectors are provided, and multiple first water pumps are provided accordingly. Each first water pump corresponds to one of the wet dust collectors, and each of the multiple wet dust collectors is connected to the second water pump.

5. The waste gas treatment system according to claim 1, characterized in that, It also includes an open channel, which is set on the ground, and the drain pipe is connected to the open channel, which is connected to the sedimentation device.

6. The waste gas treatment system according to claim 5, characterized in that, The sedimentation device includes a primary sedimentation tank, a secondary sedimentation tank, and a tertiary sedimentation tank connected in sequence. The primary sedimentation tank is connected to the open channel, and the first effluent pipe and the second effluent pipe are respectively installed in the tertiary sedimentation tank.

7. The waste gas treatment system according to claim 6, characterized in that, The inlets and outlets of the primary sedimentation tank and the secondary sedimentation tank are staggered.

8. The waste gas treatment system according to claim 5, characterized in that, The sedimentation device is designed as an open-air structure, and a removable fence is installed around the sedimentation device.

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