Sewage treatment tank for water pollution prevention and control

Abstract

The invention relates to the technical field of sewage treatment, and discloses a sewage treatment tank for water pollution control, which comprises a sedimentation tank, a blow-off pipe and a clean water tank, a storage bin is arranged on the outer side of the blow-off pipe, a precipitant is arranged in the storage bin, a water outlet is arranged between the sedimentation tank and the clean water tank, and an adjusting plate for sealing the water outlet is arranged on the side part of the sedimentation tank. A floating block is arranged in the sedimentation tank, the end part of the first water pipe is inserted into the inner side of the floating block, the floating block comprises a floating plate floating on the water surface and a sinking block submerged in the water, a through hole is formed in the side part of the sinking block, the lower end of the first water pipe is communicated with the through hole, and the water outlet end of the water pump is connected with a second water pipe; the end of the second water pipe is arranged in the clean water tank. The precipitant is continuously mixed and discharged into the wastewater in the sedimentation tank, clear water after sedimentation is discharged into the clear water tank through the water outlet, and the water pump continuously discharges the residual clear water into the clear water tank, so that solid-liquid separation of the wastewater is completed.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment, in particular to a sewage treatment pool for water pollution prevention and control. Background Art

[0002] Sewage treatment pools play a vital role in water pollution prevention and control. They are widely used in the treatment of urban domestic sewage, industrial wastewater and other fields. Through reasonable process design and equipment selection, efficient and stable sewage treatment effects can be achieved.

[0003] The following are some types of sewage treatment tanks: 1. Sedimentation tank: uses the natural sedimentation of water or the effect of coagulation and sedimentation to remove suspended solids in the water; 2. Secondary sedimentation tank: located behind the biological treatment structure (activated sludge method or biofilm method), used to precipitate and remove activated sludge or humic sludge (referring to the biofilm detached by the biofilm method); regulating tank: preliminary sedimentation and separation; regulating water quality and water quantity; achieving buffering; biochemical tank: including anaerobic tank (also called hydrolysis acidification tank), aerobic tank (also called aeration tank), facultative anaerobic tank (aerobic, anoxic, and anaerobic coexist), contact oxidation tank (also called oxidation tank), and biological adsorption tank, using microbial degradation to decompose organic matter in sewage; secondary sedimentation tank: separates sludge, clarifies, concentrates and returns the activated sludge to the mixed liquor; in addition, there are disinfection tanks for sterilization and disinfection after biochemical treatment, oil separation regulating tanks for treating oily sewage, and homogenization return tanks.

[0004] At present, when the existing technology treats wastewater containing sludge, it is usually necessary to pour the wastewater into a sedimentation tank, and then add a precipitant to the wastewater so that the sludge contained in the wastewater gathers and settles to the bottom. However, it is generally necessary to manually spread the precipitant, and after the sedimentation is completed, the supernatant is led out of the sedimentation tank, which consumes a lot of manpower and is not convenient for separating the sludge in the wastewater; therefore, it does not meet the existing needs. In this regard, we propose a sewage treatment tank for water pollution prevention and control. Summary of the invention

[0005] The present invention provides a sewage treatment pool for water pollution prevention and control, which has the beneficial effect of automatically adding a precipitant when wastewater is poured into a sedimentation tank, so as to facilitate the separation of sludge in the wastewater. The invention solves the problem that when treating wastewater containing sludge in the prior art mentioned in the above background technology, it is usually necessary to pour the wastewater into a sedimentation tank, and then add a precipitant to the wastewater, so that the sludge contained in the wastewater is aggregated and precipitated to the bottom. However, it is generally necessary to manually sprinkle the precipitant, and after the precipitation is completed, the supernatant is led out of the sedimentation tank, which consumes a lot of manpower and is not convenient for separating the sludge in the wastewater.

[0006] The present invention provides the following technical solution: a sewage treatment tank for water pollution prevention and control, comprising a sedimentation tank, a sewage discharge pipe connected to the sedimentation tank, and a clean water tank arranged at the side of the sedimentation tank, a partition is arranged between the sedimentation tank and the clean water tank, a connecting pipe is connected to the outside of the sewage discharge pipe, a storage bin is installed at the upper end of the connecting pipe, a precipitant is arranged in the storage bin, a drainage port for connecting the sedimentation tank and the clean water tank is opened in the middle of the partition, an adjusting plate for closing the drainage port is slidably arranged on the inner side of the partition, a water pump is installed on the upper side of the partition, a first water pipe is connected to the water inlet end of the water pump, a floating block is arranged in the sedimentation tank, the end of the first water pipe is inserted inside the floating block, the floating block comprises a floating plate floating on the water surface and a sinker submerged in the water, the floating plate is connected to the sinker, a through hole is opened on the side of the sinker, the lower end of the first water pipe is connected to the through hole, a second water pipe is connected to the water outlet end of the water pump, and the end of the second water pipe is arranged in the clean water tank.

[0007] As an optional solution for a sewage treatment pool for water pollution prevention and control described in the present invention, wherein: a countercurrent sheet is arranged inside the connecting pipe, the countercurrent sheet is connected to the inner wall of the connecting pipe, the countercurrent sheet is arranged as an arc-shaped sheet, the number of the countercurrent sheets is arranged as several, and the countercurrent sheet is used to prevent the wastewater in the sewage pipe from entering the connecting pipe.

[0008] As an optional solution for a sewage treatment tank for water pollution control described in the present invention, wherein: a first rotating shaft is rotatably installed on the side wall of the sedimentation tank, an impeller is sleeved in the middle of the first rotating shaft, and the impeller is arranged below the outlet end of the sewage pipe, a first bevel gear is installed at the end of the first rotating shaft, a second rotating shaft is rotatably installed at the bottom of the sedimentation layer, a second bevel gear is sleeved in the middle of the second rotating shaft, the second bevel gear is meshed with the first bevel gear, and a first pulley is installed at the top of the second rotating shaft.

[0009] As an optional solution of a sewage treatment pool for water pollution prevention and control described in the present invention, wherein: the bottom of the storage bin is connected to the top of the connecting pipe, the bottom of the storage bin is connected to a baffle, the side of the baffle is provided with a first discharge hole, the number of the first discharge holes is set to a plurality, and the plurality of first discharge holes are evenly arranged on the side of the baffle in an annular direction, a second pulley is arranged on the lower side of the baffle, the second pulley is arranged inside the connecting pipe, a transmission belt is commonly sleeved between the first pulley and the second pulley, a bearing is sleeved on the end of the plug shaft of the second pulley, and the bearing is installed on the inner side of the baffle; The side wall of the connecting pipe is provided with a notch, the transmission belt passes through the notch provided in the side wall of the connecting pipe, and the transmission belt is plugged into the side wall of the connecting pipe.

[0010] As an optional solution of a sewage treatment pool for water pollution control described in the present invention, wherein: a second discharge hole is opened on the side of the second pulley, the number of the second discharge holes is the same as the number of the first discharge holes, and a plurality of the second discharge holes are evenly arranged in an annular direction on the side of the second pulley, and in the initial state: the first discharge hole and the second discharge hole are staggered with each other.

[0011] As an optional solution for a sewage treatment pool for water pollution control described in the present invention, a sealing piece is slidably arranged on the inner side of the second pulley, the number of the sealing pieces is the same as the number of the second discharge holes, the sealing piece blocks the second discharge holes, and a spring is installed on the outer side of the sealing piece, one end of the spring is connected to the sealing piece, and the other end of the spring is connected to the inner wall of the second pulley.

[0012] As an optional solution for a sewage treatment pool for water pollution prevention and control described in the present invention, the adjustment plate includes a flat plate and a mesh plate connected to the flat plate, a telescopic part is installed on the inner side of the partition, and the telescopic end of the telescopic part is connected to the flat plate. In the initial state, the flat plate is located in the middle of the drain outlet to close the drain outlet.

[0013] As an optional solution for a sewage treatment tank for water pollution control described in the present invention, a slider is installed on the outside of the floating block, a groove body used in conjunction with the slider is opened on the side wall of the sedimentation tank, and the slider is slidably inserted in the groove body on the side wall of the sedimentation tank.

[0014] As an optional solution for a sewage treatment tank for water pollution control described in the present invention, a connecting rod is installed on the outside of the floating block, a tooth segment is arranged on the side of the connecting rod, a third rotating shaft is rotatably installed on the side wall of the sedimentation tank, the third rotating shaft and the sedimentation tank are sealed, a gear is installed at one end of the third rotating shaft, and the gear is intermittently meshed with the tooth segment.

[0015] As an optional solution for a sewage treatment pool for water pollution control described in the present invention, wherein: a knife switch is arranged on the outside of the third rotating shaft, the knife switch includes a base, and an electric contact foot rotatably arranged on the side of the base, the side of the base is electrically connected to a first cable, the end of the first cable is electrically connected to the water pump, the side of the electric contact foot is electrically connected to a second cable, the end of the second cable is electrically connected to an external power supply, a lever is installed on the outside of the third rotating shaft, the lever is arranged below the electric contact foot, and in an initial state: the electric contact foot is away from the base, and the circuit between the electric contact foot and the base is broken.

[0016] The present invention has the following beneficial effects: 1. In the sewage treatment pool for water pollution prevention and control, wastewater containing a large amount of sludge is discharged into the sedimentation tank through the sewage pipe. At the same time, the precipitant in the storage bin continuously falls into the sewage pipe through the connecting pipe and mixes with the wastewater therein and is discharged into the sedimentation tank together, so that the precipitant promotes the rapid aggregation of sludge in the wastewater, thereby gradually clarifying the wastewater, and the sludge is settled at the bottom of the sedimentation tank; The telescopic member pulls up the adjusting plate, replaces the flat plate with the mesh plate, releases the blockage of the drain port by the flat plate, and allows the clean water in the sedimentation tank to be discharged into the clean water tank through the drain port and the mesh plate until the water surface in the sedimentation tank is flush with the drain port, and resets the adjusting plate through the telescopic member so that the flat plate blocks the drain port again, starts the water pump, and allows the remaining clean water in the sedimentation tank to continue to be discharged into the clean water tank through the through hole, the first water pipe and the second water pipe until the clean water in the sedimentation tank is completely extracted, the sedimentation blocks float on the sludge, the through hole is exposed to the air, and the water pump stops working, thereby facilitating the solid-liquid separation of the wastewater.

[0017] 2. In the sewage treatment pool for water pollution prevention and control, wastewater impacts the impeller, so that the impeller drives the first bevel gear to rotate through the first rotating shaft, and the second rotating shaft and the first pulley are driven to rotate through the meshing of the first bevel gear and the second bevel gear, and then the second pulley is driven to rotate through the setting of the transmission belt; Due to the centrifugal force generated by the rotation of the second pulley, the blocking piece slides outward, and the spring is compressed, thereby releasing the blocking of the second discharge hole by the blocking piece. Moreover, the second discharge hole rotates together with the second pulley, so that the second discharge hole and the first discharge hole are continuously overlapped and connected, so that the precipitant in the storage bin continuously falls into the wastewater, which makes it easy for the sludge in the wastewater to gather and precipitate, thereby facilitating the effective solid-liquid separation of the wastewater. When the wastewater is discharged, the impeller stops rotating, causing the second pulley to stop rotating, so that the centrifugal force generated by the rotation of the second pulley disappears, and under the rebound force of the spring, the blocking piece resets to block the second discharge hole again, thereby stopping the addition of the precipitant.

[0018] 3. In the sewage treatment tank for water pollution prevention and control, the clean water in the sedimentation tank is poured into the clean water tank through the drain port, and the floating block drives the connecting rod to drop as the water level in the sedimentation tank drops. When the water level in the sedimentation tank is about to be level with the drain port, the gear drives the lever to rotate through the third shaft through the meshing of the tooth segment and the gear, so that the lever pushes the electric contact foot upward, so that the electric contact foot contacts the base to generate an electrical connection, thereby forming a complete circuit loop between the water pump and the external power supply. At this time, the water pump is started, so that it is convenient to continue to pour the remaining clean water in the sedimentation tank into the clean water tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0020] Figure 2 It is a schematic diagram of the local three-dimensional structure of the present invention.

[0021] Figure 3 It is a schematic diagram of the local explosion structure of the present invention.

[0022] Figure 4 It is a schematic diagram of the cross-section structure of the connecting pipe of the present invention in the first state.

[0023] Figure 5 It is a schematic diagram of the cross-section structure of the connecting pipe of the present invention in the second state.

[0024] Figure 6 It is a schematic diagram of the partial cutaway structure of the present invention.

[0025] Figure 7 It is a schematic diagram of the three-dimensional structure of the adjustment plate of the present invention.

[0026] Figure 8 It is a schematic diagram of the three-dimensional structure of the knife switch of the present invention.

[0027] In the figure: 100, sedimentation tank; 110, sewage pipe; 120, clean water tank; 130, partition; 140, connecting pipe; 141, countercurrent sheet; 150, storage bin; 160, precipitant; 170, first rotating shaft; 171, impeller; 172, first bevel gear; 173, second rotating shaft; 174, second bevel gear; 175, first belt pulley; 180, baffle; 181, first discharge hole; 182, second belt pulley; 183, transmission belt; 184, bearing; 185, second discharge hole; 190, blocking sheet; 19 1. Spring; 200. Drain outlet; 210. Adjustment plate; 211. Flat plate; 212. Mesh plate; 213. Telescopic member; 220. Water pump; 221. First water pipe; 222. Float; 2221. Float plate; 2222. Sinking block; 223. Through hole; 230. Slider; 240. Connecting rod; 241. Tooth segment; 242. Third rotating shaft; 243. Gear; 250. Knife switch; 251. Base; 252. Electric contact foot; 253. First cable; 254. Second cable; 255. Lever; 256. Second water pipe. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] Example 1: This example aims to solve the problem that in the prior art, when treating wastewater containing sludge, it is usually necessary to pour the wastewater into a sedimentation tank, and then add a precipitant to the wastewater so that the sludge contained in the wastewater is aggregated and precipitated to the bottom. However, it is generally necessary to manually sprinkle the precipitant, and then lead the supernatant out of the sedimentation tank after the sedimentation is completed, which consumes a lot of manpower and is not convenient for separating the sludge in the wastewater. Please refer to Figure 1 , Figure 4 , Figure 6 , Figure 7 and Figure 8 A sewage treatment tank for water pollution prevention and control includes a sedimentation tank 100, a sewage pipe 110 connected to the sedimentation tank 100, and a clean water tank 120 arranged on the side of the sedimentation tank 100. A partition 130 is arranged between the sedimentation tank 100 and the clean water tank 120 to separate the sedimentation tank 100 from the clean water tank 120. The sewage pipe 110 is used to discharge wastewater containing a large amount of sludge into the sedimentation tank 100.

[0030] See Figure 2 A connecting pipe 140 is fixedly connected to the upper side of the sewage pipe 110, and a countercurrent sheet 141 is arranged inside the connecting pipe 140. The countercurrent sheet 141 is fixedly connected to the inner wall of the connecting pipe 140. The countercurrent sheet 141 is arranged as an arc-shaped sheet. The number of the countercurrent sheets 141 is arranged as a plurality of countercurrent sheets 141, and the plurality of countercurrent sheets 141 are staggeredly arranged on both sides of the connecting pipe 140. The countercurrent sheets 141 are used to prevent the wastewater in the sewage pipe 110 from entering the connecting pipe 140.

[0031] A storage bin 150 is fixedly mounted on the upper end of the connecting pipe 140, and a precipitant 160 is stored in the storage bin 150. Figure 6 A drain port 200 for connecting the sedimentation tank 100 and the clean water tank 120 is provided in the middle of the partition 130. An adjusting plate 210 for closing the drain port 200 is slidably provided on the inner side of the partition 130. The adjusting plate 210 includes a flat plate 211 and a mesh plate 212 fixedly connected to the flat plate 211. A telescopic member 213 is installed on the inner side of the partition 130. The telescopic member 213 is configured as an electric lifting rod or a hydraulic cylinder, and the telescopic end of the telescopic member 213 is in an extended state. The telescopic end of the telescopic member 213 is fixedly connected to the flat plate 211. In the initial state, the flat plate 211 is located in the middle of the drain port 200 to close the drain port 200.

[0032] A water pump 220 is fixedly installed on the upper side of the partition 130, and the water inlet end of the water pump 220 is connected to the first water pipe 221, which is configured as a corrugated pipe or a hose. A floating block 222 is provided in the sedimentation tank 100, and the lower end of the first water pipe 221 is inserted into the inner side of the floating block 222. The floating block 222 includes a floating plate 2221 floating on the water surface and a sinker 2222 submerged in the water. The floating plate 2221 is fixedly connected to the sinker 2222, and a through hole 223 is opened on the side of the sinker 2222. The lower end of the first water pipe 221 is communicated with the through hole 223, and the water outlet end of the water pump 220 is connected to the second water pipe 256, and the end of the second water pipe 256 is arranged in the clear water tank 120.

[0033] The sedimentation tank 100 and the clean water tank 120 are the same in length, width and depth. The drain outlet 200 is located at half the depth of the sedimentation tank 100, and the highest liquid level of the wastewater is also lower than the tank outlet of the sedimentation tank 100. Therefore, when the clarified liquid after sedimentation in the sedimentation tank 100 is poured into the clean water tank 120 through the drain outlet 200: the lowest water level in the sedimentation tank 100 is level with the drain outlet 200, and the highest water level in the clean water tank 120 is also lower than the drain outlet 200. Therefore, the clean water in the clean water tank 120 will not flow back into the sedimentation tank 100 through the drain outlet 200.

[0034] After sedimentation, the wastewater is separated into clean water and sludge, so that a large amount of sludge contained therein gathers and settles at the bottom of the sedimentation tank 100. The density of the sedimentation block 2222 is greater than the density of the clean water, so that the sedimentation block 2222 and the through hole 223 are submerged in the clean water, so that the first water pipe 221 is connected to the clean water through the through hole 223. Moreover, the density of the sedimentation block 2222 is less than the density of the sludge, so that the sedimentation block 2222 floats above the sludge, thereby exposing the through hole 223 to the air.

[0035] In this embodiment, wastewater containing a large amount of sludge is discharged into the sedimentation tank 100 through the sewage pipe 110. At the same time, the precipitant 160 in the storage bin 150 continuously falls into the sewage pipe 110 through the connecting pipe 140 and is mixed with the wastewater therein and discharged into the sedimentation tank 100 together, so that the precipitant 160 promotes the rapid aggregation of sludge in the wastewater, thereby gradually clarifying the wastewater, and the sludge is precipitated at the bottom of the sedimentation tank 100. The telescopic member 213 pulls up the adjusting plate 210, replaces the flat plate 211 with the mesh plate 212, releases the sealing of the drain port 200 by the flat plate 211, and discharges the clean water in the sedimentation tank 100 into the clean water tank 120 through the drain port 200 and the mesh plate 212, until the water surface in the sedimentation tank 100 is flush with the drain port 200, the adjusting plate 210 is reset by the telescopic member 213, so that the flat plate 211 seals the drain port 200 again, and the water pump 220 is started, so that the remaining clean water in the sedimentation tank 100 continues to be discharged to the clean water tank 120 through the through hole 223, the first water pipe 221 and the second water pipe 256. The water tank 120 is kept clean until the clean water in the sedimentation tank 100 is completely extracted, the sedimentation block 2222 floats on the sludge, the through hole 223 is exposed to the air, and the water pump 220 stops working, so as to facilitate the solid-liquid separation of the wastewater and solve the problem that when treating wastewater containing sludge in the prior art, it is usually necessary to pour the wastewater into the sedimentation tank, and then add a precipitant to the wastewater so that the sludge contained in the wastewater gathers and settles to the bottom. However, it is generally necessary to manually spread the precipitant, and after the precipitation is completed, the supernatant is led out of the sedimentation tank, which consumes a lot of manpower and is not convenient for separating the sludge in the wastewater.

[0036] Embodiment 2: This embodiment is intended to promote the solution of the problem that it is inconvenient to continuously add the precipitant 160 to the wastewater, which easily affects the precipitation of the wastewater and is inconvenient to effectively separate the solid and liquid of the wastewater. This embodiment is an improvement made on the basis of Embodiment 1. For details, please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 A first rotating shaft 170 is rotatably installed on the side wall of the sedimentation tank 100, and an impeller 171 is fixedly sleeved in the middle of the first rotating shaft 170. The impeller 171 is arranged below the water outlet end of the sewage pipe 110. A first bevel gear 172 is fixedly installed on the end of the first rotating shaft 170. A second rotating shaft 173 is rotatably installed at the bottom of the sedimentation layer. A second bevel gear 174 is fixedly sleeved in the middle of the second rotating shaft 173. The second bevel gear 174 is meshed with the first bevel gear 172, and a first pulley 175 is fixedly installed on the top of the second rotating shaft 173.

[0037] See Figure 4 and Figure 5The bottom of the storage bin 150 is connected to the top of the connecting pipe 140, and a baffle 180 is fixedly connected to the bottom of the storage bin 150. A first discharge hole 181 is opened on the side of the baffle 180. The number of the first discharge holes 181 is set to be several, and the several first discharge holes 181 are evenly arranged on the side of the baffle 180 in an annular direction. A second pulley 182 is rotatably arranged on the lower side of the baffle 180, and the second pulley 182 is arranged inside the connecting pipe 140. A transmission belt 183 is commonly sleeved between the first pulley 175 and the second pulley 182, and a bearing is sleeved on the end of the plug shaft of the second pulley 182 184, bearing 184 is installed on the inner side of baffle 180, a notch is opened on the side wall of connecting pipe 140, transmission belt 183 passes through the notch opened on the side wall of connecting pipe 140, transmission belt 183 is plugged into the side wall of connecting pipe 140, impeller 171 is at the upper end of sedimentation tank 100, when the water level in sedimentation tank 100 is the highest, the lower edge of impeller 171 is submerged, at this time, the impact force of discharged sewage on the upper side of impeller 171 is greater than the resistance of sewage on the lower side of impeller 171, therefore, when wastewater is discharged through sewage pipe 110, impeller 171 is always driven to rotate by the impact force of wastewater.

[0038] See Figure 3 A second discharge hole 185 is opened on the side of the second pulley 182, the number of the second discharge holes 185 is the same as the number of the first discharge holes 181, and several second discharge holes 185 are evenly arranged in an annular direction on the side of the second pulley 182. In the initial state: the first discharge hole 181 and the second discharge hole 185 are staggered with each other, so that the first discharge hole 181 and the second discharge hole 185 are not connected.

[0039] See Figure 4 A blocking piece 190 is slidably provided on the inner side of the second pulley 182. The number of the blocking pieces 190 is the same as the number of the second discharge holes 185. The blocking pieces 190 block the second discharge holes 185. A spring 191 is installed on the outer side of the blocking pieces 190. One end of the spring 191 is fixedly connected to the blocking piece 190, and the other end of the spring 191 is fixedly connected to the inner wall of the second pulley 182.

[0040] In this embodiment: wastewater impacts the impeller 171, so that the impeller 171 drives the first bevel gear 172 to rotate through the first rotating shaft 170, and the second rotating shaft 173 and the first pulley 175 are driven to rotate through the meshing of the first bevel gear 172 and the second bevel gear 174, and then the second pulley 182 is driven to rotate through the setting of the transmission belt 183; Due to the centrifugal force generated by the rotation of the second pulley 182, the blocking piece 190 slides outward, and the spring 191 is compressed, thereby releasing the blocking of the second discharge hole 185 by the blocking piece 190. Moreover, the second discharge hole 185 rotates together with the second pulley 182, so that the second discharge hole 185 and the first discharge hole 181 are constantly overlapped and connected, so that the precipitant 160 in the storage bin 150 continuously falls into the wastewater, which makes it easy for the sludge in the wastewater to gather and precipitate, thereby facilitating the effective solid-liquid separation of the wastewater. When the wastewater is discharged, the impeller 171 stops rotating, causing the second pulley 182 to stop rotating, so that the centrifugal force generated by the rotation of the second pulley 182 disappears, and under the rebound force of the spring 191, the blocking piece 190 resets to block the second discharge hole 185 again, thereby stopping the addition of the precipitant 160.

[0041] Embodiment 3: This embodiment is intended to solve the problem that it is inconvenient to start the water pump 220 at an appropriate time, thereby inconvenient to continue to pour the remaining clean water in the sedimentation tank 100 into the clean water tank 120. This embodiment is an improvement made on the basis of Embodiment 1. For details, please refer to Figure 1 , Figure 6 and Figure 8 A slider 230 is fixedly installed on the outside of the floating block 222, and a groove body used in conjunction with the slider 230 is opened on the side wall of the sedimentation tank 100. The slider 230 is slidably inserted in the groove body on the side wall of the sedimentation tank 100. A connecting rod 240 is also fixedly installed on the outside of the floating block 222. A tooth segment 241 is arranged on the side of the connecting rod 240. A third rotating shaft 242 is rotatably installed on the side wall of the sedimentation tank 100. The third rotating shaft 242 and the sedimentation tank 100 are sealed by conventional technical means. This is a technical means well known to technicians in this field and will not be elaborated here. A gear 243 is fixedly installed on one end of the third rotating shaft 242, and the gear 243 is intermittently meshed with the tooth segment 241.

[0042] A knife switch 250 is provided at one end of the third rotating shaft 242 away from the gear 243. The knife switch 250 includes a base 251 and an electric contact foot 252 rotatably arranged on the side of the base 251. The knife switch 250 is a technical means well known to technicians in this field and will not be described in detail here. A first cable 253 is electrically connected to the side of the base 251, and the end of the first cable 253 is electrically connected to the water pump 220. A second cable 254 is electrically connected to the side of the electric contact foot 252, and the end of the second cable 254 is electrically connected to an external power supply. A lever 255 is fixedly installed on the outside of the third rotating shaft 242, and the lever 255 is arranged below the electric contact foot 252. In the initial state: the electric contact foot 252 is away from the base 251, so that the circuit between the electric contact foot 252 and the base 251 is disconnected.

[0043] In the present embodiment, the clean water in the sedimentation tank 100 is poured into the clean water tank 120 through the drain port 200, and the floating block 222 drives the connecting rod 240 to descend as the water level in the sedimentation tank 100 descends. When the water level in the sedimentation tank 100 is about to be level with the drain port 200, the gear 243 is meshed with the tooth segment 241, so that the gear 243 drives the lever 255 to rotate through the third rotating shaft 242, so that the lever 255 pushes the electric contact foot 252 upward, so that the electric contact foot 252 contacts the base to generate an electrical connection, so that the water pump 220 forms a complete circuit loop with the external power supply. At this time, the water pump 220 is started, so as to facilitate the remaining clean water in the sedimentation tank 100 to continue to be poured into the clean water tank 120.

[0044] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0045] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A sewage treatment tank for water pollution prevention and control, comprising a sedimentation tank (100), a sewage discharge pipe (110) connected to the sedimentation tank (100), and a clean water tank (120) arranged on the side of the sedimentation tank (100), characterized in that: A partition (130) is provided between the sedimentation tank (100) and the clean water tank (120); a connecting pipe (140) is connected to the outside of the sewage pipe (110); a storage bin (150) is installed at the upper end of the connecting pipe (140); a precipitant (160) is arranged in the storage bin (150); a drainage port (200) for connecting the sedimentation tank (100) and the clean water tank (120) is provided in the middle of the partition (130); an adjusting plate (210) for closing the drainage port (200) is slidably provided on the inner side of the partition (130); a water pump (220) is installed on the upper side of the partition (130); a water inlet end of the water pump (220) is connected to a A first water pipe (221) is provided. A floating block (222) is arranged in the sedimentation tank (100). The end of the first water pipe (221) is inserted into the inner side of the floating block (222). The floating block (222) comprises a floating plate (2221) floating on the water surface and a sinker (2222) submerged in the water. The floating plate (2221) is connected to the sinker (2222). A through hole (223) is provided on the side of the sinker (2222). The lower end of the first water pipe (221) is connected to the through hole (223). The water outlet of the water pump (220) is connected to a second water pipe (256). The end of the second water pipe (256) is arranged in the clean water tank (120).

2. A sewage treatment pool for water pollution prevention and control according to claim 1, characterized in that: A counterflow sheet (141) is arranged inside the connecting pipe (140); the counterflow sheet (141) is connected to the inner wall of the connecting pipe (140); the counterflow sheet (141) is arranged as an arc-shaped sheet; the number of the counterflow sheets (141) is arranged to be a plurality; the counterflow sheet (141) is used to prevent wastewater in the sewage pipe (110) from entering the connecting pipe (140).

3. A sewage treatment pool for water pollution prevention and control according to claim 1, characterized in that: A first rotating shaft (170) is rotatably mounted on the side wall of the sedimentation tank (100); an impeller (171) is sleeved on the middle of the first rotating shaft (170); the impeller (171) is arranged below the water outlet of the sewage discharge pipe (110); a first bevel gear (172) is mounted on the end of the first rotating shaft (170); a second rotating shaft (173) is rotatably mounted on the bottom of the sedimentation layer; a second bevel gear (174) is sleeved on the middle of the second rotating shaft (173); the second bevel gear (174) is meshed with the first bevel gear (172); and a first pulley (175) is mounted on the top of the second rotating shaft (173).

4. A sewage treatment pool for water pollution prevention and control according to claim 3, characterized in that: The bottom of the storage bin (150) is connected to the top of the connecting pipe (140), the bottom of the storage bin (150) is connected to a baffle (180), a first discharge hole (181) is opened on the side of the baffle (180), the number of the first discharge holes (181) is set to be a plurality, and the plurality of first discharge holes (181) are evenly arranged in a circumferential direction on the side of the baffle (180), a second pulley (182) is arranged on the lower side of the baffle (180), the second pulley (182) is arranged inside the connecting pipe (140), a transmission belt (183) is sleeved between the first pulley (175) and the second pulley (182), a bearing (184) is sleeved on the end of the plug shaft of the second pulley (182), and the bearing (184) is installed on the inner side of the baffle (180); The side wall of the connecting pipe (140) is provided with a notch, the transmission belt (183) passes through the notch provided in the side wall of the connecting pipe (140), and the transmission belt (183) is plugged into the side wall of the connecting pipe (140).

5. A sewage treatment pool for water pollution prevention and control according to claim 4, characterized in that: A second discharge hole (185) is provided on the side of the second pulley (182), the number of the second discharge holes (185) is the same as the number of the first discharge holes (181), and a plurality of the second discharge holes (185) are evenly arranged in an annular direction on the side of the second pulley (182), and in an initial state: the first discharge hole (181) and the second discharge hole (185) are staggered with each other.

6. A sewage treatment pool for water pollution prevention and control according to claim 5, characterized in that: A blocking piece (190) is slidably arranged inside the second pulley (182), the number of the blocking pieces (190) being the same as the number of the second discharge holes (185), the blocking pieces (190) blocking the second discharge holes (185), a spring (191) being installed outside the blocking pieces (190), one end of the spring (191) being connected to the blocking piece (190), and the other end of the spring (191) being connected to the inner wall of the second pulley (182).

7. A sewage treatment pool for water pollution prevention and control according to claim 1, characterized in that: The adjustment plate (210) comprises a flat plate (211) and a mesh plate (212) connected to the flat plate (211); a telescopic member (213) is installed inside the partition (130); a telescopic end of the telescopic member (213) is connected to the flat plate (211); in an initial state, the flat plate (211) is located in the middle of the drain outlet (200) to close the drain outlet (200).

8. A sewage treatment pool for water pollution prevention and control according to claim 1, characterized in that: A sliding block (230) is installed outside the floating block (222), a groove body for use with the sliding block (230) is opened on the side wall of the sedimentation tank (100), and the sliding block (230) is slidably inserted in the groove body on the side wall of the sedimentation tank (100).

9. A sewage treatment pool for water pollution prevention and control according to claim 8, characterized in that: A connecting rod (240) is installed on the outside of the floating block (222), and a tooth segment (241) is arranged on the side of the connecting rod (240). A third rotating shaft (242) is rotatably installed on the side wall of the sedimentation tank (100), and the third rotating shaft (242) and the sedimentation tank (100) are sealed. A gear (243) is installed on one end of the third rotating shaft (242), and the gear (243) is intermittently meshed with the tooth segment (241).

10. A sewage treatment pool for water pollution prevention and control according to claim 9, characterized in that: A knife switch (250) is arranged outside the third rotating shaft (242), and the knife switch (250) comprises a base (251) and an electric contact foot (252) rotatably arranged on the side of the base (251); a first cable (253) is electrically connected to the side of the base (251), and an end of the first cable (253) is electrically connected to the water pump (220); a second cable (254) is electrically connected to the side of the electric contact foot (252), and an end of the second cable (254) is electrically connected to an external power supply; a lever (255) is installed outside the third rotating shaft (242), and the lever (255) is arranged below the electric contact foot (252); in an initial state, the electric contact foot (252) is away from the base (251), and the circuit between the electric contact foot (252) and the base (251) is disconnected.

Images