Wastewater treatment device for coal-fired power plant

Abstract

The coal-fired power plant wastewater treatment device comprises a box body and a fixing ring, the upper surface of the box body is fixedly connected with a purification box and a main motor respectively, the top of the box body is movably connected with a transmission shaft through a sealing bearing, the upper end of the transmission shaft is connected with the main motor through a coupler, and the lower end of the transmission shaft is fixedly connected with a rotating plate; cleaning blocks are symmetrically connected to the lower surface of the rotating plate, meanwhile, a filtering assembly is fixedly connected to the bottom in the box body, the fixing ring is fixedly connected to a groove formed in the inner side face of the box body, positioning blocks are symmetrically connected to the inner side face of the fixing ring, and positioning grooves are correspondingly formed in the positions, opposite to the positioning blocks, of the lower surface of the mounting ring. Through cooperation of the filter assembly, the main filter plate, the auxiliary filter plate, the electric rod, the rotating plate and the cleaning block, the device can circularly filter wastewater for multiple times, the problem that sediment generated by quick lime blocks the main filter plate can be effectively avoided, and it is ensured that the wastewater can smoothly flow circularly.

Description

Technical Field

[0001] The utility model relates to the technical field of wastewater treatment, in particular to a wastewater treatment device for a coal-fired power plant. Background Art

[0002] As a key enterprise for pollution control and emission reduction, coal-fired power plants need to optimize and transform their desulfurization wastewater equipment under the wastewater treatment technology, and solve existing problems in a timely manner to ensure good desulfurization effects. At present, the main wastewater zero-emission treatment processes include chemical softening, membrane salt separation, membrane concentration, electrodialysis, evaporation concentration and other categories, but most of these process methods have complex treatment processes, long processes, high investments, and high wastewater treatment costs. There is no circulation device and the descaling is not thorough.

[0003] After searching, a coal-fired power plant wastewater treatment device disclosed in the prior art (application number: CN202223537066.3) records in the text that "it includes a treatment tower, a circulation device arranged on the treatment tower, a sewage discharge device arranged on the treatment tower, a neutralization device arranged in the treatment tower, a liquid inlet arranged on the treatment tower and located below the neutralization device, and a liquid outlet arranged at the lower end of the treatment tower, and a liquid outlet valve is arranged on the liquid outlet." When the device is used, the drain valve and the water pump are opened, and the water pump transports the wastewater below the inclined filter plate to the top of the hollow filter plate, and the wastewater contacts with the quicklime in the hollow filter plate through the nozzle and undergoes a neutralization reaction. The generated wastewater is then filtered through the inclined filter plate, and the dirt generated by the filtration is in the wastewater. Under the scouring, it gradually gathers in the sewage pipe; observe through the glass observation window, after the quicklime disappears completely and the reaction is sufficient, open the liquid outlet valve, and the reacted wastewater is transported through the liquid outlet. After completion, open the sewage valve to complete the discharge of dirt. However, the quicklime of the device is placed in the hollow filter plate, and a large amount of heat will be generated in the process of contact between quicklime and wastewater, and corresponding precipitate will be generated, and the heat can turn the liquid into steam. Therefore, in the process of quicklime and wastewater, the air pressure in the treatment tower will gradually increase, which will increase the probability of expansion and deformation of the treatment tower. At the same time, the precipitate generated in the hollow filter plate will gradually block the filter holes, thereby affecting the circulation of wastewater, and the precipitate in the hollow filter plate cannot be cleaned conveniently. Utility Model Content

[0004] In order to overcome the defects of the prior art, a coal-fired power plant wastewater treatment device is now provided to solve the problems raised in the above background technology.

[0005] In order to achieve the above-mentioned purpose, a coal-fired power plant wastewater treatment device is provided, comprising: a box body and a fixed ring, a circulation component is arranged on the outer side of the box body, the liquid inlet end of the circulation component is connected to the lower end of the box body, and the liquid outlet end of the circulation component is connected to the upper end of the box body, the upper surface of the box body is fixedly connected to the purification box and the main motor, and the top of the box body is movably connected to the transmission shaft through a sealed bearing, the upper end of the transmission shaft is connected to the main motor through a coupling, and the lower end of the transmission shaft is fixedly connected to a rotating plate, and the lower surface of the rotating plate is symmetrically connected to a cleaning block, and at the same time, the bottom of the box body is fixedly connected to the filter component, and the lower surface of the box body is fixedly connected to the filter component. Connect the discharge pipe, the fixing ring is fixedly connected in the groove opened on the inner side of the box body, and the inner side of the fixing ring is symmetrically connected to the positioning block, and a positioning groove is opened on the lower surface of the mounting ring corresponding to the position of the positioning block, the mounting ring is fixedly connected to the box body through the positioning block, and the lower end of the inner side of the mounting plate is fixedly connected to the main filter plate, and at the same time, a slag discharge port is opened on the surface of the main filter plate, and the position of the lower surface of the main filter plate near the slag discharge port is fixedly connected to the guide rod and the electric rod respectively, and the auxiliary filter plate is slidably connected to the lower surface of the main filter plate through the guide rod, and the telescopic rod of the electric rod is fixedly connected to the auxiliary filter plate.

[0006] Preferably, the filter assembly is composed of a horizontal plate and a vertical plate, and the horizontal plate is a truncated cone structure, while the vertical plate is a cylindrical structure, and the axial cross-section of the filter assembly is a Y-shaped structure, while the inner cavity of the vertical plate is connected to the discharge pipe.

[0007] Preferably, the purification box has a square structure, the inner cavity of the purification box is connected to the inner cavity of the box through the exhaust hole, and three groups of adsorption plates are opened in parallel and equidistantly along the vertical direction in the purification box, and the three groups of mounting grooves are fixedly connected to each other. At the same time, the cross-section formed by the combination of the purification box and the adsorption plates is in the shape of a U-shaped structure.

[0008] Preferably, the fixing ring is in a circular ring structure, the size of the fixing ring and the corresponding groove are matched, and the inner arc surface of the fixing ring is circumferentially surrounded by multiple groups of positioning blocks fixedly connected at equal intervals, and the positioning blocks are in a rectangular structure.

[0009] Preferably, the mounting ring is cylindrical in structure, the positioning groove corresponding to the lower end of the outer arc surface of the mounting plate is rectangular in structure, the sizes of the positioning groove and the positioning block are matched, and the length of the positioning groove is smaller than the axial length of the mounting ring.

[0010] Preferably, the main filter plate has a circular structure, the axial cross-section formed by the combination of the main filter plate and the mounting ring has a U-shaped structure, and the slag discharge port is opened on the surface of the main filter plate and has a rectangular structure, and the two groups of guide rods fixedly connected to the lower surface of the main filter plate are both cylindrical structures. At the same time, the auxiliary filter plate has a rectangular structure, the size of the auxiliary filter plate is larger than the size of the slag discharge port, and the two ends of the auxiliary filter plate are slidably connected to the two groups of guide rods through guide holes.

[0011] Preferably, the rotating plate is in the shape of an elongated strip, the end faces of the rotating plate at both ends are arc-shaped protrusions, and the sizes of the rotating plate and the inner arc surface of the mounting ring are adapted to each other, and the two ends of the lower surface of the rotating plate are respectively and parallelly fixedly connected with multiple groups of cleaning blocks at equal intervals, and at the same time, the cleaning blocks at both ends of the lower surface of the rotating plate are staggered and distributed, and the cleaning blocks are in a right-angled trapezoidal structure.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows: through the cooperation of the purification box and the adsorption plate, the gas in the box can be connected with the external gas, thereby ensuring the air pressure balance in the box, and through the cooperation of the main motor, the transmission shaft, the rotating plate, the cleaning block, the electric rod and the auxiliary filter plate, the device can clean the precipitate generated by quicklime accordingly, reduce the probability of the precipitate clogging the filter holes, thereby improving the cleaning efficiency inside the device, and ensuring that the wastewater can circulate accordingly through the circulation component. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a front view schematic diagram of an embodiment of the utility model.

[0014] Figure 2 It is a side view schematic diagram of an embodiment of the utility model.

[0015] Figure 3 It is a top view schematic diagram of an embodiment of the utility model.

[0016] Figure 4 This is a schematic diagram of the structure of the rotating plate and the cleaning block according to an embodiment of the utility model.

[0017] In the figure: 1. Box body; 2. Filter assembly; 3. Auxiliary filter plate; 4. Electric rod; 5. Main filter plate; 6. Fixed ring; 7. Positioning block; 8. Mounting ring; 9. Purification box; 10. Main motor; 11. Transmission shaft; 12. Rotating plate; 13. Cleaning block; 14. Slag discharge port; 15. Guide rod; 16. Circulation assembly; 17. Discharge pipe. DETAILED DESCRIPTION

[0018] Reference Figures 1 to 4As shown, the utility model provides a wastewater treatment device for a coal-fired power plant, comprising: a box body 1 and a fixed ring 6, a circulation component 16 is arranged on the outer side of the box body 1, a liquid inlet end of the circulation component 16 is connected to the lower end of the box body 1, and a liquid outlet end of the circulation component 16 is connected to the upper end of the box body 1, the upper surface of the box body 1 is respectively fixedly connected to a purification box 9 and a main motor 10, and the top of the box body 1 is movably connected to a transmission shaft 11 through a sealed bearing, the upper end of the transmission shaft 11 is connected to the main motor 10 through a coupling, and the lower end of the transmission shaft 11 is fixedly connected to a rotating plate 12, and the lower surface of the rotating plate 12 is symmetrically connected to a cleaning block 13, and at the same time, the bottom of the box body 1 is fixedly connected to a filter component 2, and the lower surface of the box body 1 The surface is fixedly connected to the discharge pipe 17, the fixing ring 6 is fixedly connected to the groove opened on the inner side of the box body 1, and the inner side of the fixing ring 6 is symmetrically connected to the positioning block 7, and the positioning groove is opened on the lower surface of the mounting ring 8 corresponding to the position of the positioning block 7, the mounting ring 8 is fixedly connected to the box body 1 through the positioning block 7, and the lower end of the inner side of the mounting plate is fixedly connected to the main filter plate 5, and at the same time, a slag discharge port 14 is opened on the surface of the main filter plate 5, and the position of the lower surface of the main filter plate 5 near the slag discharge port 14 is fixedly connected to the guide rod 15 and the electric rod 4 respectively, and the auxiliary filter plate 3 is slidably connected to the lower surface of the main filter plate 5 through the guide rod 15, and the telescopic rod of the electric rod 4 is fixedly connected to the auxiliary filter plate 3.

[0019] In this embodiment, the wastewater to be treated in the coal-fired power plant is first injected into the box body 1 through the injection pipe, and the liquid pump switch in the circulation component 16 is started. The liquid pump moves the wastewater at the bottom of the box body 1 to the upper end of the box body 1 through the liquid inlet end, and the wastewater can be sprayed out from the liquid outlet end of the circulation component 16. In the process of the wastewater flowing to the liquid inlet end, the impurities in the wastewater will be filtered by the filter component 2 first, which can reduce the probability of damage to the liquid pump and can also help improve the neutralization effect of quicklime and wastewater. After the wastewater is sprayed into the mounting ring 8, the wastewater will contact the quicklime on the upper surface of the main filter plate 5, so the quicklime and the wastewater will undergo a neutralization reaction, thereby enhancing the treatment effect of the wastewater. The steam generated by the heat release of the quicklime will be discharged from the box body 1 through the adsorption purification of the purification box 9, ensuring the air pressure balance inside the box body 1. At the same time, when the quicklime generates a lot of sediment on the upper surface of the main filter plate 5, the switch of the main motor 10 is started, and the main motor 1 The transmission shaft 11 is driven to rotate through the coupling, and the transmission shaft 11 drives the fixedly connected rotating plate 12 and the cleaning block 13 to rotate synchronously, so the cleaning block 13 can stir the quicklime and sediment on the upper surface of the main filter plate 5 accordingly, which can not only enhance the neutralization effect of quicklime and waste liquid, but also reduce the probability of sediment blocking the filter hole. Then, after the wastewater treatment is completed and there are many sediments on the upper surface of the main filter plate 5, the switch of the electric rod 4 is first started, and the electric rod 4 pushes the auxiliary filter plate 3 to move through the telescopic rod, and then opens the slag discharge port 14 opened on the main filter plate 5, so that the sediment on the upper surface of the main filter plate 5 can fall from the slag discharge port 14 under the push of the cleaning block 13, thereby improving the cleaning efficiency of the surface of the main filter plate 5, and opens the valve of the drain pipe to discharge the treated wastewater in the box body 1, and then opens the valve of the discharge pipe 17, and then the filtered debris and sediment in the box body 1 can be smoothly discharged through the discharge pipe 17.

[0020] As a preferred embodiment, the filter assembly 2 is composed of a horizontal plate and a vertical plate, and the horizontal plate is a truncated cone structure, while the vertical plate is a cylindrical structure, and the axial cross-section of the filter assembly 2 is a Y-shaped structure, and the inner cavity of the vertical plate is connected to the discharge pipe 17.

[0021] In this embodiment, if Figure 1 and Figure 2 The structural setting of the filter assembly 2 can help improve the discharge efficiency of debris and sediment, and the inclined structure of the horizontal plate cooperates with the inner cavity of the vertical plate, so that debris and sediment can be accumulated at the discharge pipe 17, which is convenient for subsequent cleaning.

[0022] As a preferred embodiment, the purification box 9 has a square structure, the inner cavity of the purification box 9 is connected to the inner cavity of the box body 1 through the exhaust hole, and three groups of parallel and equidistantly spaced grooves are opened in the purification box 9 along the vertical direction, and three groups of adsorption plates are fixedly connected in the three groups of mounting grooves. At the same time, the cross-section formed by the combination of the purification box 9 and the adsorption plates is a mesh-shaped structure.

[0023] In this embodiment, if Figure 1 and Figure 2 The adsorption plate is made of activated carbon, which can then perform corresponding adsorption and purification treatment on the gas flowing through the purification box 9, thereby reducing the probability of harmful gases being accidentally discharged. At the same time, the air outlet holes on the upper surface of the purification box 9 can also be fixedly connected to other pipelines, thereby facilitating the treatment of the discharged gas.

[0024] As a preferred embodiment, the fixing ring 6 is in an annular structure, the size of the fixing ring 6 and the corresponding groove are matched, and the inner arc surface of the fixing ring 6 is circumferentially surrounded by multiple groups of positioning blocks 7 with equal intervals, and the positioning blocks 7 are in a rectangular structure.

[0025] In this embodiment, if Figure 1 and Figure 3 The sizes of the fixing ring 6 and the corresponding groove are matched, thereby ensuring that the inner arc surface of the fixing ring 6 and the inner side surface of the box body 1 are in the same vertical plane, and the setting of the positioning block 7 can assist in enhancing the fixing effect of the box body 1 on the mounting ring 8.

[0026] As a preferred embodiment, the mounting ring 8 has a cylindrical structure, and the positioning groove corresponding to the lower end of the outer arc surface of the mounting plate has a rectangular structure. The sizes of the positioning groove and the positioning block 7 are matched, and the length of the positioning groove is smaller than the axial length of the mounting ring 8.

[0027] In this embodiment, if Figure 1 and Figure 3 The sizes of the positioning groove and the positioning block 7 are matched, which can help enhance the stability of the mounting ring 8 after installation, and a wiring groove is opened on the side of the mounting ring 8 near the slag discharge port 14, which facilitates the wiring of the electric pole 4.

[0028] As a preferred embodiment, the main filter plate 5 has a circular structure, the axial cross-section formed by the combination of the main filter plate 5 and the mounting ring 8 has a U-shaped structure, and the slag discharge port 14 is opened on the surface of the main filter plate 5 and has a rectangular structure, and the two groups of guide rods 15 fixedly connected to the lower surface of the main filter plate 5 are both cylindrical structures, and the auxiliary filter plate 3 has a rectangular structure, the size of the auxiliary filter plate 3 is larger than the size of the slag discharge port 14, and the two ends of the auxiliary filter plate 3 are slidably connected to the two groups of guide rods 15 through guide holes.

[0029] In this embodiment, if Figure 1 , Figure 2 and Figure 3The setting of the guide rod 15 enables the upper surface of the auxiliary filter plate 3 to slide against the lower surface of the main filter plate 5, thereby assisting in enhancing the filtering effect of the main filter plate 5 and the auxiliary filter plate 3 on the sediment, and also facilitating the improvement of the wastewater treatment effect. At the same time, the electric rod 4 fixedly connected to the lower surface of the main filter plate 5 adopts the waterproof and acid-resistant electric rod 4 commonly found on the market.

[0030] As a preferred embodiment, the rotating plate 12 is in the shape of an elongated strip, and the end faces of the rotating plate 12 at both ends are arc-shaped protrusions, and the sizes of the rotating plate 12 and the inner arc surface of the mounting ring 8 are adapted to each other, and the two ends of the lower surface of the rotating plate 12 are respectively and parallelly fixedly connected with multiple groups of cleaning blocks 13 at equal intervals, and the cleaning blocks 13 at both ends of the lower surface of the rotating plate 12 are staggered and distributed, and the cleaning blocks 13 are in a right-angled trapezoidal structure.

[0031] In this embodiment, if Figure 3 and Figure 4 The end faces of the rotating plate 12 fit the inner arc surface of the mounting ring 8, which can help enhance the stability of the rotating plate 12 during rotation. The cleaning blocks 13 arranged on the lower surfaces of both ends of the rotating plate 12 can not only clean the sediment, but also help enhance the reaction effect of quicklime and wastewater.

[0032] The coal-fired power plant wastewater treatment device of the utility model can perform multiple filtrations on the wastewater in a circulation manner through the cooperation of the filter component 2, the main filter plate 5, the auxiliary filter plate 3, the electric rod 4, the rotating plate 12 and the cleaning block 13, and can also effectively avoid the problem of the precipitation generated by the quicklime blocking the main filter plate 5, thereby ensuring that the wastewater can circulate smoothly. At the same time, the setting of the filter component 2 can help reduce the subsequent cleaning difficulty of the device.

Claims

1. A coal-fired power plant wastewater treatment device, comprising: A box body (1) and a fixing ring (6). A circulating component (16) is arranged on the outer side surface of the box body (1). The liquid inlet end of the circulating component (16) is communicated with the lower end of the box body (1), and the liquid outlet end of the circulating component (16) is communicated with the upper end of the box body (1). It is characterized in that: a purification box (9) and a main motor (10) are respectively fixedly connected to the upper surface of the box body (1), and the top of the box body (1) is movably connected with a transmission shaft (11) through a sealing bearing. The upper end of the transmission shaft (11) is connected to the main motor (10) through a coupling, and the lower end of the transmission shaft (11) is fixedly connected to a rotating plate (12). Cleaning blocks (13) are symmetrically connected to the lower surface of the rotating plate (12). At the same time, a filtering component (2) is fixedly connected to the bottom inside the box body (1), and a discharge pipe (17) is fixedly connected to the lower surface of the box body (1). The fixing ring (6) is fixedly connected to a groove formed on the inner side surface of the box body (1), and positioning blocks (7) are symmetrically connected to the inner side surface of the fixing ring (6). Positioning grooves are correspondingly formed on the lower surface of the mounting ring (8) at positions corresponding to the positioning blocks (7). The mounting ring (8) is fixedly connected to the inside of the box body (1) through the positioning blocks (7). The lower end of the inner side surface of the mounting plate is fixedly connected to a main filter plate (5). At the same time, slag discharge openings (14) are formed on the surface of the main filter plate (5). A guide rod (15) and an electric rod (4) are respectively fixedly connected to the lower surface of the main filter plate (5) near the slag discharge openings (14). The auxiliary filter plate (3) is slidably connected to the lower surface of the main filter plate (5) through the guide rod (15). The telescopic rod of the electric rod (4) is fixedly connected to the auxiliary filter plate (3).

2. A coal-fired power plant wastewater treatment device according to claim 1, characterized in that: The filtering component (2) is composed of a cross plate and a vertical plate. The cross plate has a frustum-shaped structure, the vertical plate has a cylindrical structure, the axial section of the filtering component (2) has a Y-shaped structure, and the inner cavity of the vertical plate is communicated with the discharge pipe (17).

3. A coal-fired power plant wastewater treatment device according to claim 1, characterized in that: The purification box (9) has a square structure. The inner cavity of the purification box (9) is communicated with the inner cavity of the box body (1) through exhaust holes. Three groups of mounting grooves are formed in the purification box (9) in parallel and equidistantly along the vertical direction. Three adsorption plates are fixedly connected in the three groups of mounting grooves. At the same time, the cross section formed by the combination of the purification box (9) and the adsorption plates has an eye-shaped structure.

4. A coal-fired power plant wastewater treatment device according to claim 1, characterized in that: The fixing ring (6) has a circular ring structure. The fixing ring (6) and the corresponding groove have matching dimensions. A plurality of groups of positioning blocks (7) are fixedly connected to the inner arc surface of the fixing ring (6) at equal intervals along the circumferential direction. At the same time, the positioning blocks (7) have a rectangular structure.

5. A coal-fired power plant wastewater treatment device according to claim 1, characterized in that: The mounting ring (8) has a cylindrical structure. The positioning groove correspondingly formed at the lower end of the outer arc surface of the mounting plate has a rectangular structure. The positioning groove and the positioning blocks (7) have matching dimensions, and the length of the positioning groove is less than the axial length of the mounting ring (8).

6. A coal-fired power plant wastewater treatment device according to claim 1, characterized in that: The main filter plate (5) has a circular structure. The combination of the main filter plate (5) and the mounting ring (8) forms a U-shaped cross-section structure. The slag discharge port (14) formed on the surface of the main filter plate (5) has a rectangular structure. The two guide rods (15) fixedly connected to the lower surface of the main filter plate (5) are both cylindrical structures. At the same time, the secondary filter plate (3) has a rectangular structure. The size of the secondary filter plate (3) is larger than that of the slag discharge port (14). The two ends of the secondary filter plate (3) are respectively slidably connected to the two guide rods (15) through the guide holes.

7. A coal-fired power plant wastewater treatment device according to claim 1, characterized in that: The rotating plate (12) has a strip-shaped structure. The end faces at both ends of the rotating plate (12) are arc-shaped protrusions. The size of the inner arc surface of the rotating plate (12) is adapted to that of the mounting ring (8). Multiple cleaning blocks (13) are fixedly connected to both ends of the lower surface of the rotating plate (12) in parallel and at equal intervals. At the same time, the cleaning blocks (13) at both ends of the lower surface of the rotating plate (12) are staggeredly distributed. The cleaning blocks (13) have a right trapezoidal structure.

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