Device for purifying and recycling water film dedusting wastewater of coal-fired boiler of thermal power plant

Abstract

The embodiment of the invention provides a thermal power plant coal-fired boiler water film dedusting wastewater purifying and recycling device which comprises a filter box, a filter frame is fixedly mounted in the filter box, a filter screen is fixedly mounted in the filter frame, a motor box is fixedly mounted on one side of the filter box, and a water outlet is formed in the other side of the motor box. And a material cleaning assembly is fixedly installed in the motor box, and a sliding groove is formed in one side in the filtering box. According to the water film dedusting wastewater purifying and recycling device for the coal-fired boiler of the thermal power plant, through the arrangement of the material clearing assembly, when impurities on the surface of a filter screen need to be cleared away, a first servo motor is started and drives a first transmission rod and a threaded rod to rotate, and under the action of a sliding block, a scraping plate and a scraping knife move on the surface of the filter screen; therefore, impurities are pushed to one side, the filter screen is guaranteed to be in a circulating state, and the situation that the filter screen is blocked to cause use faults of the device is avoided.

Description

Technical Field

[0001] The embodiment of the present invention relates to the technical field of wastewater utilization, and in particular to a wastewater purification and reuse device for water film dust removal of coal-fired boilers in thermal power plants. Background Art

[0002] When the coal-fired boiler of a thermal power plant is working, a certain amount of waste gas will be generated. These waste gases usually need to be purified. Usually, water film dust removal is used. Water film dust removal is a method of air filtration and purification using water film technology. It is an efficient, economical and environmentally friendly dust removal technology. The main principle of water film dust removal is to filter the pollutant-containing gas through the water film, capture and adsorb the pollutants in the water film, and then discharge the purified gas into the atmosphere. In this process, the water film plays a physical and chemical adsorption role, and water film dust removal has many advantages. Water film dust removal equipment has the advantages of high purification efficiency, low operating cost, long service life, easy maintenance and management. The purification efficiency of water film dust removal technology can reach more than 99%, and the purified gas will not affect the environment. Water film dust removal equipment has a wide range of applications and can be used to treat industrial waste gas and atmospheric pollutants, etc. However, water film dust removal produces a large amount of wastewater, which usually needs to be recycled. Therefore, a thermal power plant coal-fired boiler water film dust removal wastewater purification and reuse device is needed to recycle the wastewater.

[0003] However, the existing water film dust removal wastewater purification and reuse device for coal-fired boilers in thermal power plants has the following disadvantages:

[0004] (1) If the filter is used for a long time, impurities may accumulate on the surface of the filter, causing the filter to become clogged;

[0005] (2) When disinfecting wastewater, it needs to be mixed with disinfectant water. Usually, it is directly left to mix statically. The mixing speed is low and uneven mixing may occur.

[0006] Therefore, the present invention provides a device for purifying and recycling wastewater from a coal-fired boiler water film dust removal in a thermal power plant. Summary of the invention

[0007] The present invention provides a water film dust removal wastewater purification and reuse device for a coal-fired boiler in a thermal power plant, which has high practicality, can be easily operated and has a relatively simple structure. It solves the problems proposed in the above background technology that long-term filtering of the filter may cause impurities to accumulate on the surface of the filter and that the wastewater needs to be mixed with the disinfectant water at a low speed when being disinfected, and uneven mixing may occur.

[0008] To achieve the above objectives, the present invention is implemented through the following technical solutions: a water film dust removal wastewater purification and reuse device for a coal-fired boiler in a thermal power plant, comprising a filter box, a filter frame is fixedly installed inside the filter box, a filter net is fixedly installed inside the filter frame, a motor box is fixedly installed on one side of the filter box, a cleaning component is fixedly installed inside the motor box, a slide groove is opened on one side of the interior of the filter box, one side of the cleaning component is slidably connected to the interior of the slide groove, and the bottom of the cleaning component slides on the surface of the filter net, a mixing box is fixedly installed on the top of the filter box, a control valve is installed at the edge of the surface of the mixing box, a protective box is fixedly installed on the top of the mixing box, and a mixing component is fixedly installed inside the protective box.

[0009] In some possible embodiments, a water inlet pipe is fixedly installed on one side of the top of the mixing box, and a drug inlet pipe is fixedly installed on the other side of the top of the mixing box, and the drug inlet pipe is provided for adding disinfectant.

[0010] In some possible embodiments, a secondary filter barrel is fixedly installed at the bottom of the filter box, a multi-layer filter assembly is fixedly installed inside the secondary filter barrel, a water outlet pipe is fixedly installed at the bottom of the secondary filter barrel, a water outlet valve is fixedly installed on the surface of the water outlet pipe, and the water outlet pipe is set to release filtered and purified water.

[0011] In some possible embodiments, a support plate is fixedly mounted on the surface of the secondary filter barrel, and support columns are fixedly mounted on both sides of the bottom of the support plate, so that the device is supported and fixed by the setting of the support plate.

[0012] In some possible embodiments, the material cleaning component includes a first servo motor fixed inside the motor box, the output end of the first servo motor is splined to a first transmission rod, one end of the first transmission rod is fixedly mounted with a threaded rod, the surface of the threaded rod is threaded with a connecting plate, a scraper is fixedly mounted on the surface of the connecting plate, a scraper is fixedly mounted on the bottom of the scraper, and a slider is fixedly mounted on one side of the scraper. The material cleaning component is configured to remove impurities on the surface of the filter screen.

[0013] In some possible embodiments, the mixing assembly includes a second servo motor fixed inside the protective box, the output end of the second servo motor is splined to a second transmission rod, a stirring rod is fixedly installed at one end of the second transmission rod, and mixing rods are evenly distributed and fixedly installed on the surface of the stirring rod from top to bottom, and the mixing assembly is used to mix the disinfectant and wastewater.

[0014] The present invention provides a device for purifying and recycling wastewater from a coal-fired boiler in a thermal power plant, which has the following beneficial effects:

[0015] 1. The water film dust removal wastewater purification and reuse device of the coal-fired boiler in the thermal power plant, through the setting of the cleaning component, when it is necessary to remove impurities on the surface of the filter, start the first servo motor, the first servo motor drives the first transmission rod and the threaded rod to rotate, under the action of the slider, the scraper and the scraper move on the surface of the filter, and then push the impurities to one side, to ensure that the filter is in a flow state, to avoid the filter clogging caused by the use of the device malfunction.

[0016] 2. The water film dust removal wastewater purification and reuse device for the coal-fired boiler in the thermal power plant, through the setting of the mixing component, when the disinfectant and wastewater enter the mixing box at the same time, the second servo motor is started, and the second servo motor drives the second transmission rod and the stirring rod to rotate, and then drives the mixing rod to rotate, so as to fully stir and mix the internal mixed liquid, thereby improving the uniformity of mixing between the disinfectant and the wastewater. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 It is a schematic diagram of the structure of the material cleaning component of the present invention;

[0020] Figure 3 It is a schematic diagram of the structure of the mixing assembly of the present invention;

[0021] Figure 4 This is a structural diagram of Embodiment 1 of the present invention.

[0022] In the figure: 1. filter box; 2. filter frame; 3. filter screen; 4. cleaning component; 401. first servo motor; 402. first transmission rod; 403. threaded rod; 404. scraper; 405. scraper; 5. mixing box; 6. mixing component; 601. second servo motor; 602. second transmission rod; 603. stirring rod; 604. mixing rod; 7. water inlet pipe; 8. agent inlet pipe; 9. secondary filter barrel; 10. multi-layer filter component; 1001. activated carbon layer; 1002. sand and gravel layer; 1003. ceramic filter element layer; 1004. polymer resin layer; 1005. ultrafiltration membrane layer; 11. support plate; 12. water outlet pipe. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work are within the scope of protection of the present invention.

[0024] Unless otherwise specified, the technical terms or scientific terms used in the embodiments of the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. "Including" or "comprising" used in the embodiments of the present invention neither limit the shapes, numbers, steps, actions, operations, components, originals and / or their groups mentioned, nor exclude the appearance or addition of one or more other different shapes, numbers, steps, actions, operations, components, originals and / or their groups, or the addition of these. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number and order of the indicated technical features. Thus, the features defined as "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the embodiments of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0025] Unless otherwise specifically stated, the relative arrangement of the components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship, and the techniques, methods and devices known to ordinary technicians in the relevant fields may not be discussed in detail, but where appropriate, the techniques, methods and devices shown should be considered as part of the authorized specification. In all examples shown and discussed here, any specific other examples may have different values. It should be noted that similar symbols and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0026] In the description of the embodiments of the present invention, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In the embodiments of the present invention, the schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in the embodiments of the present invention and the features of the different embodiments or examples, without contradiction.

[0027] The present invention uses a flow chart to illustrate the operations performed by the system according to an embodiment of the present invention. It should be understood that the preceding or following operations are not necessarily performed precisely in order. On the contrary, various steps may be processed in reverse order or simultaneously as required. At the same time, other operations may also be added to these processes, or one or more operations may be removed from these processes.

[0028] Below, the exemplary embodiments according to the present invention will be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments of the present invention, and it should be understood that the present invention is not limited to the exemplary embodiments described here.

[0029] See also Figures 1 to 4The present invention provides a technical solution: a water film dust removal wastewater purification and reuse device for a coal-fired boiler in a thermal power plant, comprising a filter box 1, a filter frame 2 is fixedly installed inside the filter box 1, a filter screen 3 is fixedly installed inside the filter frame 2, a motor box is fixedly installed on one side of the filter box 1, a cleaning component 4 is fixedly installed inside the motor box, and through the setting of the cleaning component 4, when it is necessary to remove impurities on the surface of the filter screen 3, the first servo motor 401 is started, the first servo motor 401 drives the first transmission rod 402 and the threaded rod 403 to rotate, and under the action of the slider, the scraper 404 and the scraper 405 move on the surface of the filter screen 3, and then push the impurities to one side, so as to ensure that the filter screen 3 is in a flow state, and avoid the filter screen 3 from being blocked and causing the device to be used. In case of a fault, a slide groove is provided on one side of the inside of the filter box 1, one side of the cleaning component 4 is slidably connected to the inside of the slide groove, and the bottom of the cleaning component 4 slides on the surface of the filter screen 3, and a mixing box 5 is fixedly installed on the top of the filter box 1, and a control valve is installed at the edge of the surface of the mixing box 5. A protection box is fixedly installed on the top of the mixing box 5, and a mixing component 6 is fixedly installed inside the protection box. Through the setting of the mixing component 6, when the disinfectant and wastewater enter the mixing box 5 at the same time, the second servo motor 601 is started, and the second servo motor 601 drives the second transmission rod 602 and the stirring rod 603 to rotate, and then drives the mixing rod 604 to rotate, so that the internal mixed liquid is fully stirred and mixed, thereby improving the uniformity of mixing between the disinfectant and the wastewater.

[0030] A water inlet pipe 7 is fixedly installed on one side of the top of the mixing box 5, and a drug inlet pipe 8 is fixedly installed on the other side of the top of the mixing box 5. The setting of the drug inlet pipe 8 plays a role in adding disinfectant.

[0031] A secondary filter barrel 9 is fixedly installed at the bottom of the filter box 1, a multi-layer filter assembly 10 is fixedly installed inside the secondary filter barrel 9, a water outlet pipe 12 is fixedly installed at the bottom of the secondary filter barrel 9, and a water outlet valve is fixedly installed on the surface of the water outlet pipe 12. The setting of the water outlet pipe 12 plays a role in releasing filtered and purified water.

[0032] A support plate 11 is fixedly mounted on the surface of the secondary filter barrel 9, and support columns are fixedly mounted on both sides of the bottom of the support plate 11. The arrangement of the support plate 11 serves to support and fix the device.

[0033] The cleaning component 4 includes a first servo motor 401 fixed inside the motor box, the model is SGM7G-13AFC6S and the rated power is 100W, the output end of the first servo motor 401 is splinedly connected to the first transmission rod 402, one end of the first transmission rod 402 is fixedly installed with a threaded rod 403, the surface thread of the threaded rod 403 is penetrated by a connecting plate, the surface of the connecting plate is fixedly installed with a scraper 404, the bottom of the scraper 404 is fixedly installed with a scraper 405, and one side of the scraper 404 is fixedly installed with a slider, and the setting of the cleaning component 4 plays a role in clearing impurities on the surface of the filter screen 3.

[0034] The mixing component 6 includes a second servo motor 601 fixed inside the protective box. The model is SGM7G-13AFC6S and the rated power is 100W. The output end of the second servo motor 601 is spline-connected to the second transmission rod 602. A stirring rod 603 is fixedly installed at one end of the second transmission rod 602. Mixing rods 604 are evenly distributed and fixedly installed on the surface of the stirring rod 603 from top to bottom. The setting of the mixing component 6 plays a role in mixing the disinfectant and the wastewater.

[0035] In the present invention, the working steps of the device are as follows:

[0036] The first step: After fixing the device in the working area, connect various pipelines and external equipment.

[0037] The second step: when the disinfectant and wastewater enter the mixing box 5 at the same time, start the second servo motor 601, the second servo motor 601 drives the second transmission rod 602 and the stirring rod 603 to rotate, and then drives the mixing rod 604 to rotate, so as to fully stir and mix the internal mixed liquid, thereby improving the uniformity of mixing between the disinfectant and the wastewater.

[0038] The third step: when it is necessary to remove impurities on the surface of the filter 3, start the first servo motor 401, the first servo motor 401 drives the first transmission rod 402 and the threaded rod 403 to rotate, and under the action of the slider, the scraper 404 and the scraper 405 move on the surface of the filter 3, and then push the impurities to one side, ensuring that the filter 3 is in a flow state.

[0039] Embodiment 1:

[0040] See also Figure 4As shown, the multi-layer filtration component 10 includes a secondary filtration barrel 9 with an activated carbon layer 1001 fixedly installed inside, a sand and gravel layer 1002 fixedly installed at the bottom of the activated carbon layer 1001, a ceramic filter element layer 1003 fixedly installed at the bottom of the sand and gravel layer 1002, a polymer resin layer 1004 fixedly installed at the bottom of the ceramic filter element layer 1003, and an ultrafiltration membrane layer 1005 fixedly installed at the bottom of the polymer resin layer 1004. The wastewater is filtered and purified by a multi-layer purification device, and is fully filtered for the second time to ensure the cleanliness of the purified water.

[0041] It should be noted that the equipment structure and drawings of the present invention mainly describe the principle of the present invention. In terms of the technology of the design principle, the settings of the power mechanism, power supply system and control system of the device are not fully described. On the premise that the technical personnel in the field understand the principle of the above invention, the specific power mechanism, power supply system and control system can be clearly known. The control method of the application document is to automatically control through a controller, and the control circuit of the controller can be realized by simple programming by the technical personnel in the field. The standard parts used can be purchased from the market, and can be customized according to the description and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. Machinery, parts and equipment all adopt conventional models in the prior art, and the components known to the technical personnel in the field, their structures and principles are all known to the technical personnel in the field through technical manuals or conventional experimental methods.

[0042] It is to be understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present invention, but the present invention is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A device for purifying and recycling wastewater from a coal-fired boiler in a thermal power plant by using a water film to remove dust, comprising a filter box (1), characterized in that: A filter frame (2) is fixedly installed inside the filter box (1), a filter screen (3) is fixedly installed inside the filter frame (2), a motor box is fixedly installed on one side of the filter box (1), a cleaning component (4) is fixedly installed inside the motor box, a slide groove is opened on one side of the filter box (1), one side of the cleaning component (4) is slidably connected to the inside of the slide groove, and the bottom of the cleaning component (4) slides on the surface of the filter screen (3), a mixing box (5) is fixedly installed on the top of the filter box (1), a control valve is installed at the edge of the surface of the mixing box (5), a protection box is fixedly installed on the top of the mixing box (5), and a mixing component (6) is fixedly installed inside the protection box.

2. According to claim 1, a thermal power plant coal-fired boiler water film dust removal wastewater purification and reuse device is characterized by: A water inlet pipe (7) is fixedly installed on one side of the top of the mixing box (5), and a reagent inlet pipe (8) is fixedly installed on the other side of the top of the mixing box (5).

3. The device for purifying and recycling wastewater from coal-fired boiler water film dust removal in a thermal power plant according to claim 1 is characterized by: A secondary filter barrel (9) is fixedly mounted on the bottom of the filter box (1), a multi-layer filter assembly (10) is fixedly mounted inside the secondary filter barrel (9), a water outlet pipe (12) is fixedly mounted on the bottom of the secondary filter barrel (9), and a water outlet valve is fixedly mounted on the surface of the water outlet pipe (12).

4. A device for purifying and recycling wastewater from a coal-fired boiler in a thermal power plant according to claim 3, characterized in that: A support plate (11) is fixedly mounted on the surface of the secondary filtering barrel (9), and support columns are fixedly mounted on both sides of the bottom of the support plate (11).

5. The device for purifying and recycling wastewater from coal-fired boiler water film dust removal in a thermal power plant according to claim 1, characterized in that: The material cleaning component (4) comprises a first servo motor (401) fixedly mounted inside the motor box, the output end of the first servo motor (401) being spline-connected to a first transmission rod (402), one end of the first transmission rod (402) being fixedly mounted with a threaded rod (403), a surface of the threaded rod (403) being threadedly penetrated by a connecting plate, a surface of the connecting plate being fixedly mounted with a scraper (404), a scraper (405) being fixedly mounted at the bottom of the scraper (404), and a slider being fixedly mounted on one side of the scraper (404).

6. The device for purifying and recycling wastewater from coal-fired boiler water film dust removal in a thermal power plant according to claim 1, characterized in that: The mixing assembly (6) comprises a second servo motor (601) fixedly mounted inside the protection box, the output end of the second servo motor (601) being spline-connected to a second transmission rod (602), one end of the second transmission rod (602) being fixedly mounted with a stirring rod (603), and the surface of the stirring rod (603) being evenly distributed and fixedly mounted with mixing rods (604) from top to bottom.

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