Sand-water separation device

Abstract

The application discloses a sand-water separation device, which comprises a sedimentation mechanism and a separation 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 water tank is arranged obliquely. The lower end 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 outlet. The upper end surface of the lining plate is gap-fitted with the shaftless screw. The upper end surface of the lining plate is provided with a plurality of arc-shaped grooves. Each of the arc-shaped grooves is rotationally provided with a roller. When the roller is blocked by sand particles, the shaftless screw applies a force to the sand particles during rotation, the sand particles apply a force to the roller, the roller rotates, the sand particles are removed, the frictional resistance of the shaftless screw during rotation is reduced, and the load and energy consumption of the driving element are reduced.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, and in particular to a sand-water separation device. Background Technology

[0002] The main process of sand-water separation is to pump sand particles along with sewage from the sedimentation tank sludge collection hopper to the sand-water separator using a sand pump. The sand particles are discharged through the top outlet of the shaftless spiral in the sand-water separator, while the sewage flows back to the grit chamber through the overflow outlet.

[0003] In existing sand-water separators (such as Chinese invention patent application number CN200910172226.9), there is a tiny gap between the shaftless spiral and the liner for water to flow down. However, this gap is easily clogged by sand particles of just the right size, which increases the resistance to the rotation of the shaftless spiral, thereby increasing the load on the drive components and energy consumption. Summary of the Invention

[0004] In view of this, it is necessary to provide a sand-water separation device to solve the technical problem that the gap between the shaftless screw and the liner of the existing sand-water separator is easily blocked by sand particles, which leads to increased resistance to the rotation of the shaftless screw, increased load on the drive components and energy consumption.

[0005] To achieve the above objectives, the present invention provides a sand-water separation device, including a sedimentation mechanism and a separation mechanism;

[0006] The sedimentation mechanism includes a water tank and an inlet pipe. The water tank has a sedimentation chamber, an outlet is provided at the lower end of the water tank, an overflow outlet is provided at the upper end of the water tank, and the inlet pipe is connected to the sedimentation chamber.

[0007] The separation mechanism includes a water tank, a shaftless spiral, a liner, and a driving component. The water tank is inclined and its lower end is connected to the water outlet. A sand discharge port is provided on the lower end face of the upper end of the water tank. The shaftless spiral is coaxially built into the water tank and rotatably connected to it. The liner is fixedly laid on the inner wall of the water tank, and its upper end face is in clearance fit with the shaftless spiral. Several arc-shaped grooves are provided on the upper end face of the liner, and a roller is rotatably installed in each arc-shaped groove. The roller is parallel to the axial direction of the water tank. The driving component is connected to the shaftless spiral and is used to drive the shaftless spiral to rotate.

[0008] In some embodiments, there are multiple lining plates, and each lining plate is sequentially and fixedly laid on the inner wall of the water tank along the length direction of the water tank, and the length of the roller is not greater than the length of the lining plate.

[0009] In some embodiments, the driving component includes a drive motor and a reducer, the output shaft of the drive motor is connected to the input end of the reducer, and the output end of the reducer is fixedly connected to the shaftless screw.

[0010] In some embodiments, the drive unit further includes a torque sensor, the output shaft of the drive motor is fixedly connected to one end of the torque sensor, and the other end of the torque sensor is fixedly connected to the input end of the reducer; when the torque sensor detects that the torque value is lower than a preset torque value, the output power of the drive motor is reduced to the preset power.

[0011] In some embodiments, the sedimentation mechanism further includes a plurality of baffles, each of which is fixed inside the sedimentation chamber and is arranged at an angle and in an alternating manner.

[0012] In some embodiments, the cross-sectional area of ​​the precipitation chamber decreases sequentially from top to bottom.

[0013] In some embodiments, the water tank is provided with a cover plate, and the cover plate has an inlet that communicates with the sedimentation chamber and is connected to the inlet pipe; the sedimentation mechanism further includes a liquid level sensor and an inlet valve, the liquid level sensor is used to detect the liquid level in the sedimentation chamber, and the inlet valve is located at the inlet. When the liquid level sensor detects that the liquid level reaches a preset height, the inlet valve is closed, and when the liquid level sensor detects that the liquid level is lower than the preset height, the inlet valve is opened.

[0014] In some embodiments, the liquid level sensor is a laser rangefinder, which is disposed on the lower end surface of the cover plate.

[0015] In some embodiments, the sedimentation mechanism further includes a water distributor fixed to the lower end of the water inlet.

[0016] In some embodiments, the sedimentation mechanism further includes an overflow pipe and a filter, one end of the overflow pipe being located inside the sedimentation chamber, the other end of the overflow pipe being connected to the overflow outlet, and the filter being disposed at one end of the overflow pipe.

[0017] Compared with the prior art, the beneficial effects of the technical solution proposed in this invention are as follows: During use, sand-containing wastewater is introduced into the sedimentation chamber through the inlet pipe. The sand particles with a higher specific gravity in the wastewater settle downwards and gradually gather at the bottom of the tank. The drive unit drives the shaftless screw to rotate, and the shaftless screw transports the sand particles and wastewater upwards. When the height of the wastewater in the shaftless screw exceeds the liquid level in the tank, the wastewater flows down through the tiny gap between the shaftless screw and the liner under the action of gravity. Since most of the sand particles are larger than this gap, they gradually rise with the rotation of the shaftless screw and are eventually discharged from the sand discharge port. Excess water is continuously discharged from the overflow port and flows back to the grid well. In this invention, since a rotatable roller is embedded in the liner, when sand particles clog the space between the roller and the shaftless screw, the shaftless screw applies a force to the sand particles as it rotates, and the sand particles apply a force to the roller, causing the roller to rotate. This removes the sand particles, reduces the frictional resistance experienced by the shaftless screw during rotation, and lowers the load and energy consumption of the drive components. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural schematic diagram of an embodiment of the sand-water separation device provided by the present invention;

[0019] Figure 2 yes Figure 1 A bottom view;

[0020] Figure 3 yes Figure 2 Sectional view of section AA;

[0021] Figure 4 yes Figure 3 A magnified view of a portion of region B in the middle;

[0022] Figure 5 yes Figure 1 Top view of the separation mechanism in the middle;

[0023] Figure 6 yes Figure 5 Sectional view of the middle section CC;

[0024] Figure 7 yes Figure 6 A magnified view of a portion of region D in the middle;

[0025] Figure 8 yes Figure 3 A three-dimensional structural diagram of a liner plate;

[0026] Figure 9 yes Figure 3 A schematic diagram of the precipitation mechanism in the image;

[0027] In the diagram: 1-Sedimentation mechanism, 11-Water tank, 111-Outlet, 112-Overflow outlet, 12-Baffle plate, 13-Cover plate, 131-Inlet, 132-Water distributor, 14-Level sensor, 15-Inlet valve, 16-Overflow pipe, 17-Filter, 2-Separation mechanism, 21-Water tank, 211-Sand discharge port, 22-Shaftless spiral, 23-Liner, 24-Drive component, 241-Drive motor, 242-Reducer, 25-Roller. Detailed Implementation

[0028] Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which form part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0029] Please refer to Figures 1-9 The present invention provides a sand-water separation device, including a sedimentation mechanism 1 and a separation mechanism 2.

[0030] The sedimentation mechanism 1 includes a water tank 11 and an inlet pipe. The water tank 11 has a sedimentation chamber. The lower end of the water tank 11 has an outlet 111 and the upper end of the water tank 11 has an overflow outlet 112. The inlet pipe is connected to the sedimentation chamber and is used to introduce sand-containing sewage into the sedimentation chamber.

[0031] The separation mechanism 2 includes a water tank 21, a shaftless spiral 22, a liner 23, and a driving component 24. The water tank 21 is inclined and its lower end is connected to the water outlet 111. A sand discharge port 211 is provided on the lower end face of the upper end of the water tank 21. The shaftless spiral 22 is coaxially built into the water tank 21 and rotatably connected to the water tank 21. The liner 23 is fixedly laid on the inner wall of the water tank 21. The upper end face of the liner 23 is clearance-fitted with the shaftless spiral 22. Several arc-shaped grooves are provided on the upper end face of the liner 23. A roller 25 is rotatably arranged in each arc-shaped groove. The roller 25 is parallel to the axial direction of the water tank 21. The driving component 24 is connected to the shaftless spiral 22 and is used to drive the shaftless spiral 22 to rotate.

[0032] During use, sand-containing wastewater is introduced into the sedimentation chamber through the inlet pipe. The heavier sand particles in the wastewater settle downwards and gradually gather at the lower end of the water tank 21. The drive unit 24 drives the shaftless screw 22 to rotate. The shaftless screw 22 transports the sand particles and wastewater upwards. When the height of the wastewater in the shaftless screw 22 exceeds the liquid level in the water tank 11, the wastewater flows down through the tiny gap between the shaftless screw 22 and the liner 23 under the action of gravity. Since most of the sand particles are larger than this gap, they gradually rise with the rotation of the shaftless screw 22 and are eventually discharged from the sand discharge port 211. Excess water is continuously discharged from the overflow port 112 and flows back to the bar screen well. In this invention, since the liner 23 is fitted with a rotatable roller 25, when sand particles clog the space between the roller 25 and the shaftless screw 22, as the shaftless screw 22 rotates, the shaftless screw 22 applies a force to the sand particles, and the sand particles apply a force to the roller 25, causing the roller 25 to rotate. This removes the sand particles, reduces the frictional resistance experienced by the shaftless screw 22 when it rotates, and reduces the load and energy consumption of the drive component 24.

[0033] To reduce the resistance experienced by roller 25 during rotation, please refer to... Figure 8 In a preferred embodiment, there are multiple liner plates 23, and each liner plate 23 is sequentially fixedly laid on the inner wall of the water tank 21 along the length direction of the water tank 21. The length of the roller 25 is not greater than the length of the liner plate 23. In this embodiment, there are multiple liner plates 23, which can reduce manufacturing and transportation costs. At the same time, each liner plate 23 is provided with several independent rollers 25, which can ensure that the length of a single roller 25 is not too long, thereby greatly reducing the resistance encountered during rotation.

[0034] To understand the specific functions of driver 24, please refer to [link / reference]. Figures 1-3 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 further reduce operating energy consumption, please refer to Figures 1-3In a preferred embodiment, the drive unit 24 further includes a torque sensor (not shown). The output shaft of the drive motor 241 is fixedly connected to one end of the torque sensor, and the other end of the torque sensor is fixedly connected to the input end of the reducer 242. When the torque sensor detects a torque value lower than a preset torque value, it indicates that the sand content in the wastewater is relatively low. At this time, the output power of the drive motor 241 is reduced to the preset power, thereby reducing power consumption. Conversely, when the torque sensor detects a torque value higher than the preset torque value, it indicates that the sand content in the wastewater is relatively high. At this time, the output power of the drive motor 241 is increased, thereby improving sand removal efficiency.

[0036] To reduce the water flow rate in the settling chamber, please refer to... Figure 3 and Figure 9 In a preferred embodiment, the sedimentation mechanism 1 further includes a plurality of baffles 12, each of which is fixed inside the sedimentation chamber. The baffles 12 are inclined and staggered, and can block and guide the water flow, thereby reducing the flow rate of the water in the sedimentation chamber so that the sand particles in the water can settle more quickly.

[0037] To improve the sand-gathering effect, please refer to... Figure 3 and Figure 9 In a preferred embodiment, the cross-sectional area of ​​the precipitation chamber decreases sequentially from top to bottom.

[0038] To prevent the water tank 11 from filling due to excessive water inflow, please refer to... Figure 3 and Figure 9 In a preferred embodiment, the water tank 11 is provided with a cover plate 13, and the cover plate 13 has an inlet 131 communicating with the sedimentation chamber. The inlet 131 is connected to the inlet pipe. The sedimentation mechanism 1 also includes a liquid level sensor 14 and an inlet valve 15. The liquid level sensor 14 is used to detect the liquid level in the sedimentation chamber. The inlet valve 15 is located at the inlet 131. When the liquid level sensor 14 detects that the liquid level reaches a preset height, the inlet valve 15 is closed. When the liquid level sensor 14 detects that the liquid level is lower than the preset height, the inlet valve 15 is opened. This ensures that the liquid level in the water tank 11 is constant (slightly higher than the height of the overflow port 112) and prevents the water tank 11 from being filled due to excessive water intake rate.

[0039] To understand the specific functions of the liquid level sensor 14, please refer to [reference needed]. Figure 3 and Figure 9 In a preferred embodiment, the liquid level sensor 14 is a laser rangefinder, which is disposed on the lower end surface of the cover plate 13.

[0040] To reduce the water flow rate in water tank 11, please refer to... Figure 3 and Figure 9 In a preferred embodiment, the sedimentation mechanism 1 further includes a water distributor 132, which is fixed to the lower end of the water inlet 131, so that water can be evenly sprinkled to reduce the water flow velocity in the water tank 11, thereby increasing the sedimentation speed of the sand.

[0041] To prevent sand from being discharged from overflow outlet 112, please refer to... Figure 3 and Figure 9 In a preferred embodiment, the sedimentation mechanism 1 further includes an overflow pipe 16 and a filter 17. One end of the overflow pipe 16 is located in the sedimentation chamber, and the other end of the overflow pipe 16 is connected to the overflow port 112. The filter 17 is disposed at one end of the overflow pipe 16. The presence of the filter 17 can block sand particles and prevent sand particles from being discharged from the overflow port 112.

[0042] To better understand this invention, the following is combined with... Figures 1-9 The working process of the sand-water separation device provided by the present invention will be described in detail below: In use, sand-containing sewage is introduced into the sedimentation chamber through the inlet pipe. The sand particles with a larger specific gravity in the sewage settle downward and gradually gather at the lower end of the water tank 21. The drive component 24 drives the shaftless screw 22 to rotate. The shaftless screw 22 transports the sand particles and sewage upward. When the height of the sewage in the shaftless screw 22 exceeds the liquid level in the water tank 11, the sewage flows down from the tiny gap between the shaftless screw 22 and the liner 23 under the action of gravity. Since most of the sand particles are larger than this gap, they will gradually rise with the rotation of the shaftless screw 22 and eventually be discharged from the sand discharge port 211. The excess water is continuously discharged from the overflow port 112 and flows back to the grid well. In this invention, since the liner 23 is fitted with a rotatable roller 25, when sand particles clog the space between the roller 25 and the shaftless spiral 22, as the shaftless spiral 22 rotates, the shaftless spiral 22 applies a force to the sand particles, and the sand particles apply a force to the roller 25, causing the roller 25 to rotate. This removes the sand particles, reduces the frictional resistance experienced by the shaftless spiral 22 when it rotates, and reduces the load and energy consumption of the drive component 24.

[0043] 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. A sand-water separation device, characterized in that, Includes sedimentation and separation mechanisms; The sedimentation mechanism includes a water tank and an inlet pipe. The water tank has a sedimentation chamber, an outlet is provided at the lower end of the water tank, an overflow outlet is provided at the upper end of the water tank, and the inlet pipe is connected to the sedimentation chamber. The separation mechanism includes a water tank, a shaftless spiral, a liner, and a driving component. The water tank is inclined and its lower end is connected to the water outlet. A sand discharge port is provided on the lower end face of the upper end of the water tank. The shaftless spiral is coaxially built into the water tank and rotatably connected to it. The liner is fixedly laid on the inner wall of the water tank. The upper end face of the liner is clearance-fitted with the shaftless spiral. Several arc-shaped grooves are provided on the upper end face of the liner. A roller is rotatably installed in each arc-shaped groove. The roller is parallel to the axial direction of the water tank. The driving component is connected to the shaftless spiral and is used to drive the shaftless spiral to rotate. When sand particles clog the space between the roller and the shaftless screw, the shaftless screw rotates and applies a force to the sand particles, which in turn applies a force to the roller, causing the roller to rotate and thus clearing the sand particles. The number of lining plates is multiple, and each lining plate is sequentially and fixedly laid on the inner wall of the water tank along the length direction of the water tank. The length of the roller is not greater than the length of the lining plate.

2. The sand-water separation device according to claim 1, characterized in that, The driving component includes a drive motor and a reducer. The output shaft of the drive motor is connected to the input end of the reducer, and the output end of the reducer is fixedly connected to the shaftless screw.

3. The sand-water separation device according to claim 2, characterized in that, The drive unit also includes a torque sensor, the output shaft of the drive motor is fixedly connected to one end of the torque sensor, and the other end of the torque sensor is fixedly connected to the input end of the reducer; When the torque sensor detects that the torque value is lower than the preset torque value, the output power of the drive motor is reduced to the preset power.

4. The sand-water separation device according to claim 1, characterized in that, The sedimentation mechanism also includes several baffles, each of which is fixed inside the sedimentation chamber and is arranged at an angle and in an alternating manner.

5. The sand-water separation device according to claim 1, characterized in that, The cross-sectional area of ​​the precipitation chamber decreases sequentially from top to bottom.

6. The sand-water separation device according to claim 1, characterized in that, The water tank is equipped with a cover plate, and the cover plate has a water inlet that communicates with the sedimentation chamber and is connected to the water inlet pipe; The sedimentation mechanism also includes a liquid level sensor and a water inlet valve. The liquid level sensor is used to detect the liquid level in the sedimentation chamber. The water inlet valve is located at the water inlet. When the liquid level sensor detects that the liquid level reaches a preset height, the water inlet valve is closed. When the liquid level sensor detects that the liquid level is lower than the preset height, the water inlet valve is opened.

7. The sand-water separation device according to claim 6, characterized in that, The liquid level sensor is a laser rangefinder, which is mounted on the lower end face of the cover plate.

8. The sand-water separation device according to claim 6, characterized in that, The sedimentation mechanism also includes a water distributor, which is fixed to the lower end of the water inlet.

9. The sand-water separation device according to claim 1, characterized in that, The sedimentation mechanism also includes an overflow pipe and a filter. One end of the overflow pipe is located inside the sedimentation chamber, and the other end of the overflow pipe is connected to the overflow outlet. The filter is disposed at one end of the overflow pipe.

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