Energy-saving sand-water separation device

Abstract

The application discloses an energy-saving sand-water separation device, which comprises a sedimentation mechanism, a separation mechanism and a filtering mechanism. The sedimentation mechanism comprises a water tank and a water inlet pipe. The separation mechanism comprises a water tank, a shaftless screw, a lining plate and a driving element. The filtering mechanism comprises a filtering tank and a first filtering element. Compared with the prior art, the application has the following advantages: a drain port is arranged at the lower end of the water tank, so that the sewage after separating sand particles can be discharged from the drain port into the filtering tank, and then discharged after being filtered by the filtering mechanism. The opening degree of the water outlet is controlled by the water outlet valve, so that the sewage flow entering the water outlet is approximately equal to the sewage flow discharged from the drain port. Therefore, although the height of the sand discharge port is lower than the height of the center of the water tank, the water tank will not be filled with sewage. Therefore, the sand particles in the sewage do not need to be transported to a high place, and the length of the water tank and the shaftless screw can be greatly shortened, so that the conveying distance and the height difference of the sand particles and the water can be reduced, and the energy consumption of sand-water separation can be reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the sewage treatment technical field, especially to an energy-saving sand-water separation device. BACKGROUND

[0002] In sewage treatment, sand-water separation is needed. The main process of sand-water separation is to pump the sand particles in the sand collecting hopper of the sand trap together with sewage to the sand-water separator by the sand pump, and then discharge the sand particles from the top outlet of the shaftless screw in the sand-water separator, and the sewage is returned to the grid well through the overflow port.

[0003] In the existing sand-water separator (such as the Chinese utility model patent with the application number CN200910172226.9), the sand particles need to be transported to the upper end of the U-shaped groove body by the shaftless screw. In order to prevent the water tank from being filled with water, the length of the U-shaped groove body and the shaftless screw is large, usually about 3 meters, so that the sand particles can be transported from the lower end of the water tank to the upper end of the U-shaped groove body and then discharged.

[0004] Since the existing sand-water separator needs to transport the sand particles to a high position and then discharge them, the U-shaped groove body must reach a certain length. In this process, the gravity and frictional resistance of the sand particles and water need to be overcome, and the energy consumption is large. SUMMARY

[0005] Therefore, it is necessary to provide an energy-saving sand-water separation device to solve the technical problem of large energy consumption of the existing sand-water separator.

[0006] In order to achieve the above-mentioned purpose, the present application provides an energy-saving sand-water separation device, which comprises a sedimentation mechanism, a separation mechanism and a filtering mechanism.

[0007] The sedimentation mechanism comprises a water tank and a water inlet pipe. The water tank has a sedimentation cavity. The lower end of the water tank is provided with a water outlet, and the water outlet is provided with a water outlet valve. The upper end of the water tank is provided with a first overflow port. The water inlet pipe is in communication with the sedimentation cavity.

[0008] The separation mechanism comprises a water tank, a shaftless screw, a lining plate and a driving member. The water tank is inclined. The middle part of the water tank is in communication with the water outlet. The lower end surface of the upper end of the water tank is provided with a sand discharge port. The height of the sand discharge port is lower than the height of the center of the water tank. The lower end of the water tank is provided with a water discharge port. The shaftless screw is coaxially arranged in the water tank and is rotatably connected with the water tank. The lining plate is fixedly arranged on the inner wall of the water tank. The upper end surface of the lining plate is in gap cooperation with the shaftless screw. The driving member is connected with the shaftless screw and is used for driving the shaftless screw to rotate.

[0009] The filtering mechanism comprises a filtering box and a first filtering piece, the first filtering piece is arranged in the filtering box and separates the filtering box into a first filtering cavity and a second filtering cavity, a second overflow opening is arranged on a side wall of the filtering box and communicates with the second filtering cavity, and the first filtering cavity is located below the water outlet.

[0010] 5In some embodiments, the driving member comprises a driving motor and a speed reducer, an output shaft of the driving motor is connected with an input end of the speed reducer, and an output end of the speed reducer is fixedly connected with the shaftless screw.

[0011] In some embodiments, a second filtering piece is arranged in the first overflow opening.

[0012] In some embodiments, a turbidity detection piece is arranged in the precipitation cavity.

[0013] 0In some embodiments, the water outlet valve comprises a sealing plate and a hydraulic cylinder, the sealing plate is slidingly arranged at the water outlet, and the hydraulic cylinder is connected with the sealing plate and used for driving the sealing plate to move.

[0014] In some embodiments, the water outlet valve further comprises a fixing block, a plurality of guide rods and a connecting block, the fixing block is fixed on the sink, a plurality of guide holes are arranged on the fixing block, each guide rod is slidingly inserted into a corresponding guide hole, one end of each guide rod is fixedly connected with the sealing plate, the other end of each guide rod is fixedly connected with the connecting block, and the connecting block is fixedly connected with an output shaft of the hydraulic cylinder.

[0015] In some embodiments, the separation mechanism further comprises a liquid level detection piece, and the liquid level detection piece is used for detecting the liquid surface height in the sink.

[0016] In some embodiments, a first water leakage hole and a second water leakage hole are arranged on a lower end surface of the sink, a third filtering piece is arranged in the first water leakage hole, and a fourth filtering piece is arranged in the second water leakage hole; the liquid level detection piece comprises a first vertical pipe, a second vertical pipe, a connecting pipe and a liquid level sensor, an upper end of the first vertical pipe communicates with the first water leakage hole, a lower end of the first vertical pipe communicates with a lower end of the second vertical pipe, an upper end of the second vertical pipe communicates with the second water leakage hole, and the liquid level sensor is used for detecting the liquid surface height in the first vertical pipe.

[0017] In some embodiments, the liquid level sensor is a laser liquid level sensor.

[0018] In some embodiments, the filtering box is conical, a sludge outlet is arranged on a lower end of the filtering box, and a sludge outlet valve is arranged on the sludge outlet.

[0019] Compared with the prior art, the beneficial effects of the technical scheme provided by the present application are: in use, first, the water outlet valve is closed, the sand-containing sewage is introduced into the sedimentation cavity through the water pipe, the sand particles with a larger specific gravity in the sewage are deposited downward and gradually converge to the lower end of the water tank, and the clean water in the upper part is continuously discharged from the first overflow port and flows back to the well, when the sedimentation reaches a certain degree, the water outlet valve is opened, the sand-containing sewage enters the middle part of the water tank, and the driving member drives the shaftless screw to rotate, the shaftless screw conveys the sand particles and the sewage upward, under the action of gravity, the sewage flows down from the small gap between the shaftless screw and the lining plate, and most of the sand particles have a particle size larger than the gap, so they gradually rise with the rotation of the shaftless screw and are finally discharged from the sand discharge port, the water flowing down from the small gap between the shaftless screw and the lining plate flows out from the water discharge port of the water tank and falls into the first filter cavity, then passes through the first filter element, enters the second filter cavity, and is finally discharged from the second overflow port, so that the separation of the sand particles in the sewage is realized.

[0020] In the present application, by opening the water discharge port at the lower end of the water tank, the sewage after separating the sand particles can be discharged from the water discharge port into the filter box, filtered by the filtering mechanism, and then discharged, and the opening degree of the water outlet port is controlled by the water outlet valve, so that the flow of the sewage entering the water outlet port is approximately equal to the flow of the sewage discharged from the water discharge port, therefore, although the height of the sand discharge port is lower than the height of the center of the water tank, the water tank will not be filled with sewage, therefore, the sand particles in the sewage do not need to be conveyed to a high place, and the length of the water tank and the shaftless screw can be greatly shortened, so that the conveying distance and the height difference of the sand particles and the water can be reduced, and the energy consumption of sand-water separation can be reduced. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a structural schematic view of an embodiment of the energy-saving sand-water separation device provided by the present application;

[0022] Figure 2 is Figure 1 a structural schematic view of the sedimentation mechanism and the separation mechanism in

[0023] Figure 3 is Figure 2 a partial enlarged view of region A in

[0024] Figure 4 is Figure 2 a partial enlarged view of region B in

[0025] Figure 5 is Figure 1 a structural schematic view of the filtering mechanism in

[0026] In the figure: 1 - sedimentation mechanism, 11 - water tank, 111 - water outlet, 112 - first overflow, 113 - second filter, 12 - water inlet pipe, 13 - water outlet valve, 131 - sealing plate, 132 - hydraulic cylinder, 133 - fixed block, 134 - guide rod, 135 - connecting block, 14 - turbidity detection element, 2 - separation mechanism, 21 - water tank, 211 - sand outlet, 212 - water outlet, 213 - first water leakage hole, 214 - second water leakage hole, 22 - shaftless screw, 23 - lining plate, 24 - driving element, 241 - driving motor, 242 - speed reducer, 25 - liquid level detection element, 251 - first vertical pipe, 252 - second vertical pipe, 253 - connecting pipe, 254 - liquid level sensor, 3 - filtration mechanism, 31 - filter box, 311 - first filter cavity, 312 - second filter cavity, 313 - second overflow, 314 - mud outlet, 315 - mud outlet valve, 32 - first filter element. DETAILED DESCRIPTION

[0027] The preferred embodiments of the present application will be described in detail below with reference to the drawings, which form a part of this application. The drawings illustrate embodiments of the application and, together with the description, serve to explain the principles of the application, and are not intended to limit the scope of the application.

[0028] Please refer to Figure 1 and Figure 2 The present application provides an energy-saving sand-water separation device, which comprises a sedimentation mechanism 1, a separation mechanism 2 and a filtration mechanism 3.

[0029] The sedimentation mechanism 1 comprises a water tank 11 and a water inlet pipe 12. The water tank 11 has a sedimentation cavity. A water outlet 111 is formed at the lower end of the water tank 11. A water outlet valve 13 is arranged on the water outlet 111. The water outlet valve 13 is used to control the opening degree of the water outlet 111. A first overflow 112 is formed at the upper end of the water tank 11. The water inlet pipe 12 is in communication with the sedimentation cavity.

[0030] The separation mechanism 2 comprises a water tank 21, a shaftless screw 22, a lining plate 23 and a driving element 24. The water tank 21 is arranged obliquely. The middle part of the water tank 21 is in communication with the water outlet 111. A sand outlet 211 is formed on the lower end face of the upper end of the water tank 21. The height of the sand outlet 211 is lower than the height of the center of the water tank 11. A water outlet 212 is formed at the lower end of the water tank 21. The shaftless screw 22 is coaxially arranged in the water tank 21 and is rotationally connected with the water tank 21. The lining plate 23 is fixedly arranged on the inner wall of the water tank 21. The upper end face of the lining plate 23 is in clearance fit with the shaftless screw 22. The driving element 24 is connected with the shaftless screw 22 and is used to drive the shaftless screw 22 to rotate.

[0031] The filtration mechanism 3 includes a filter box 31 and a first filter element 32. The first filter element 32 is disposed inside the filter box 31 and divides the filter box 31 into a first filter chamber 311 and a second filter chamber 312. A second overflow port 313 communicating with the second filter chamber 312 is provided on the side wall of the filter box 31. The first filter chamber 311 is located below the drain port 212.

[0032] In use, first close the outlet valve 13. Sand-containing wastewater is introduced into the sedimentation chamber through the inlet pipe 12. The heavier sand particles in the wastewater settle downwards and gradually accumulate at the bottom of the tank 21. The clear water at the top is continuously discharged from the first overflow port 112 and flows back to the grit chamber. After settling to a certain extent, open the outlet valve 13, allowing the sand-containing wastewater to enter the middle of the tank 21. Simultaneously, the drive unit 24 drives the shaftless screw 22 to rotate. The shaftless screw 22 transports the sand particles and wastewater upwards. Under gravity, the wastewater flows from the shaftless screw... The water flows down through the tiny gap between the spiral 22 and the liner 23. Since most of the sand particles are larger than this gap, they gradually rise as the shaftless spiral 22 rotates and eventually exit from the sand discharge port 211. The water flowing down through the tiny gap between the shaftless spiral 22 and the liner 23 flows out from the drain port of the water tank 21 and falls into the first filter chamber 311. After being filtered by the first filter element 32, it enters the second filter chamber 312 and is finally discharged from the second overflow port 313, thus achieving the separation of sand particles in the sewage.

[0033] In this invention, by opening a drain outlet 212 at the lower end of the water tank 21, the wastewater after sand separation can be discharged from the drain outlet 212 into the filter box 31, filtered by the filter mechanism 3, and then discharged. The opening degree of the water outlet 111 is controlled by the water outlet valve 13, so that the flow rate of wastewater entering the water outlet 111 is approximately equal to the flow rate of wastewater discharged from the drain outlet 212. Therefore, although the height of the sand discharge outlet 211 is lower than the height of the center of the water tank 11, the wastewater will not fill the water tank 21. Thus, the sand particles in the wastewater do not need to be transported to a high place, and the length of the water tank 21 and the shaftless spiral 22 can be greatly shortened, thereby reducing the transport distance and height difference of sand and water, and reducing the energy consumption of sand-water separation.

[0034] To understand the specific functions of driver 24, please refer to [link / reference]. Figure 1 and Figure 2 In a preferred embodiment, the driving component 24 includes a drive motor 241 and a reducer 242. The output shaft of the drive motor 241 is connected to the input end of the reducer 242, and the output end of the reducer 242 is fixedly connected to the shaftless screw 22.

[0035] To prevent sand particles from being discharged from the first overflow outlet 112, please refer to... Figure 2In a preferred embodiment, a second filter element 113 is provided inside the first overflow outlet 112.

[0036] To facilitate determining the sediment content in water tank 11, please refer to... Figure 2 In a preferred embodiment, a turbidity detection element 14 is provided in the sedimentation chamber. The turbidity of the sewage at the lower end of the sedimentation chamber is detected by the turbidity detection element 14. If the turbidity is large, it indicates that a large amount of mud and sand has accumulated at the lower end of the sedimentation chamber. At this time, the outlet valve 13 can be opened to allow the sewage to enter the water tank 21 below and achieve sand-water separation by the rotation of the shaftless spiral 22.

[0037] To understand the specific functions of outlet valve 13, please refer to [the relevant documentation / reference]. Figure 1 and Figure 2 In a preferred embodiment, the water outlet valve 13 includes a sealing plate 131 and a hydraulic cylinder 132. The sealing plate 131 is slidably disposed at the water outlet 111. The hydraulic cylinder 132 is connected to the sealing plate 131 and is used to drive the sealing plate 131 to move, so as to adjust the opening degree of the water outlet 111.

[0038] For details on how to connect the hydraulic cylinder 132 to the sealing plate 131, please refer to... Figure 1 and Figure 2 In a preferred embodiment, the water outlet valve 13 further includes a fixing block 133, a plurality of guide rods 134, and a connecting block 135. The fixing block 133 is fixed to the water tank 21. The fixing block 133 has a plurality of guide holes. Each guide rod 134 is slidably inserted into the corresponding guide hole. One end of each guide rod 134 is fixedly connected to the sealing plate 131, and the other end of each guide rod 134 is fixedly connected to the connecting block 135. The connecting block 135 is fixedly connected to the output shaft of the hydraulic cylinder 132.

[0039] To avoid the situation where excessive sewage flow from outlet 111 causes sewage to fill tank 21, please refer to... Figures 1-4In a preferred embodiment, the separation mechanism 2 further includes a liquid level detection element 25, which is used to detect the liquid level height in the water tank 21. During use, the liquid level detection element 25 detects the liquid level height in the water tank 21. When the liquid level height in the water tank 21 exceeds a certain height (for example, 20cm below the sand discharge port 211), the opening degree of the outlet valve 13 is reduced, thereby reducing the flow rate of sewage entering the water tank 21. This makes the flow rate of sewage entering the outlet 111 less than the flow rate of sewage discharged from the drain port 212. At this time, the liquid level in the water tank 21 will drop. When it drops to a certain level, the opening degree of the outlet valve 13 is increased, thereby keeping the liquid level in the water tank 21 approximately stable, to avoid the situation where the sewage discharge from the outlet 111 is too large, causing the water tank 21 to fill with sewage.

[0040] To understand the specific functions of the liquid level detection element 25, please refer to... Figures 1-4 In a preferred embodiment, a first drain hole 213 and a second drain hole 214 are provided on the lower end face of the water tank 21. A third filter element is provided in the first drain hole 213, and a fourth filter element is provided in the second drain hole 214. The liquid level detection device 25 includes a first vertical pipe 251, a second vertical pipe 252, a connecting pipe 253, and a liquid level sensor 254. The upper end of the first vertical pipe 251 is connected to the first drain hole 213, the lower end of the first vertical pipe 251 is connected to the lower end of the second vertical pipe 252, and the upper end of the second vertical pipe 252 is connected to the second drain hole 214. The liquid level sensor 254 is used to detect the liquid level height in the first vertical pipe 251. In this embodiment, the first drain hole 213 is located at a higher position. (Slightly lower than the sand discharge port 211), the second drain hole 214 is set at a lower position. Therefore, the water in the water tank 21 will enter the second vertical pipe 252 through the second drain hole 214, and then enter the first vertical pipe 251 through the connecting pipe 253. According to the principle of connecting pipes, the liquid level in the first vertical pipe 251 is equal to the liquid level in the water tank 21. Therefore, the liquid level in the water tank 21 can be obtained by detecting the liquid level in the first vertical pipe 251, which solves the problem that it is not convenient to detect the liquid level in the water tank 21 due to the presence of the shaftless spiral 22. It should be noted that the liquid level in the water tank 21 is not allowed to exceed the position of the first drain hole 213. At the same time, the presence of the third filter and the fourth filter can prevent mud and sand from entering the first drain hole 213 and the second drain hole 214.

[0041] To implement the specific functions of the liquid level sensor 254, please refer to... Figure 3 In a preferred embodiment, the liquid level sensor 254 is a laser liquid level sensor.

[0042] To facilitate the cleaning of the sludge deposited in filter box 31, please refer to... Figure 1 andFigure 5 In a preferred embodiment, the filter box 31 is conical, and a sludge discharge port 314 is provided at the lower end of the filter box 31. A sludge discharge valve 315 is provided on the sludge discharge port 314. During use, the sludge in the sludge discharge port 314 needs to be cleaned regularly.

[0043] To better understand this invention, the following is combined with... Figures 1-5 The working process of the energy-saving sand-water separation device provided by the present invention will be described in detail below: In use, firstly, the outlet valve 13 is closed, and the sand-containing wastewater is introduced into the sedimentation chamber through the inlet pipe 12. The heavier sand particles in the wastewater settle downwards and gradually gather at the lower end of the water tank 21. The clear water at the top is continuously discharged from the first overflow port 112 and flows back to the grit chamber. When the sedimentation reaches a certain level, the outlet valve 13 is opened, and the sand-containing wastewater enters the middle of the water tank 21. At the same time, the drive component 24 drives the shaftless screw 22 to rotate, and the shaftless screw 22 transports the sand particles and wastewater upwards. Under the influence of gravity, the sewage flows down through the tiny gap between the shaftless spiral 22 and the liner 23. Since most of the sand particles are larger than this gap, they gradually rise as the shaftless spiral 22 rotates and eventually exit from the sand discharge port 211. The water flowing down through the tiny gap between the shaftless spiral 22 and the liner 23 flows out from the drain port of the water tank 21 and falls into the first filter chamber 311. After being filtered by the first filter element 32, it enters the second filter chamber 312 and is finally discharged from the second overflow port 313, thus achieving the separation of sand particles in the sewage.

[0044] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. An energy saving sand water separation device, characterized by, Including the precipitation mechanism, the separation mechanism and the filter mechanism; The precipitation mechanism includes a water tank and a water inlet pipe, the water tank has a precipitation cavity, the lower end of the water tank is provided with a water outlet, the water outlet is provided with a water outlet valve, the upper end of the water tank is provided with a first overflow outlet, and the water inlet pipe is communicated with the precipitation cavity; The separation mechanism includes a water tank, an axisless screw, a lining plate and a driving piece, the water tank is inclined, the middle part of the water tank is communicated with the water outlet, the lower end surface of the upper end of the water tank is provided with a sand discharge port, the height of the sand discharge port is lower than the height of the center of the water tank, the lower end of the water tank is provided with a water outlet, the axisless screw is coaxially arranged in the water tank and is rotationally connected with the water tank, the lining plate is fixedly arranged on the inner wall of the water tank, the upper end surface of the lining plate is gap-connected with the axisless screw, and the driving piece is connected with the axisless screw and is used for driving the rotation of the axisless screw. The filter mechanism includes a filter box and a first filter, the first filter is arranged in the filter box and separates the filter box into a first filter cavity and a second filter cavity, a second overflow outlet is formed in the side wall of the filter box and is communicated with the second filter cavity, and the first filter cavity is located below the water outlet.

2. The energy-saving sand-water separation device according to claim 1, characterized in that, The driving piece includes a driving motor and a speed reducer, the output shaft of the driving motor is connected with the input end of the speed reducer, and the output end of the speed reducer is fixedly connected with the axisless screw.

3. The energy-saving sand-water separation device according to claim 1, characterized in that, The first overflow outlet is provided with a second filter.

4. The energy-saving sand-water separation device according to claim 1, characterized in that, The precipitation cavity is provided with a turbidity detection piece.

5. The energy-saving sand-water separation device according to claim 1, characterized in that, The water outlet valve includes a sealing plate and a hydraulic cylinder, the sealing plate is slidably arranged at the water outlet, the hydraulic cylinder is connected with the sealing plate and is used for driving the movement of the sealing plate.

6. The energy-saving sand-water separation device according to claim 5, characterized in that, The water outlet valve further includes a fixed block, a plurality of guide rods and a connecting block, the fixed block is fixed on the water tank, a plurality of guide holes are formed in the fixed block, each guide rod is slidably inserted into the corresponding guide hole, one end of each guide rod is fixedly connected with the sealing plate, the other end of each guide rod is fixedly connected with the connecting block, and the connecting block is fixedly connected with the output shaft of the hydraulic cylinder.

7. The energy-saving sand-water separation device according to claim 1, characterized in that, The separation mechanism further includes a liquid level detection piece, and the liquid level detection piece is used for detecting the liquid level in the water tank.

8. The energy-saving sand-water separation device according to claim 7, characterized in that, A first water leakage hole and a second water leakage hole are formed in the lower end surface of the water tank, a third filter is arranged in the first water leakage hole, and a fourth filter is arranged in the second water leakage hole. The liquid level detection piece includes a first vertical pipe, a second vertical pipe, a connecting pipe and a liquid level sensor, the upper end of the first vertical pipe is communicated with the first water leakage hole, the lower end of the first vertical pipe is communicated with the lower end of the second vertical pipe, the upper end of the second vertical pipe is communicated with the second water leakage hole, and the liquid level sensor is used for detecting the liquid level in the first vertical pipe.

9. The energy-saving sand-water separation device according to claim 8, characterized in that, The liquid level sensor is a laser liquid level sensor.

10. The energy-saving sand-water separation device according to claim 1, characterized in that, The filter box is conical, and a mud discharge port is formed in the lower end of the filter box and is provided with a mud discharge valve.

Images