Sand-water separator

Abstract

The utility model provides a sand-water separator, which is characterized in that the lower parts of the side surfaces of a separation box are folded inwards to form a bottom surface with a narrowed lower part and an upward inclination, a spiral conveying device is arranged on the bottom surface of the separation box, the front part of the spiral conveying device is provided with a slag discharge pipe, and the slag discharge pipe is higher than a top plate of the separation box; an opening in the rear end of the spiral conveying device is communicated with the interior of the separation box and provided with a short pipe, and a filter screen cylinder is arranged at the upper end of the short pipe; a water inlet pipe is arranged on the top plate, a filter screen cylinder is arranged under the water inlet pipe, and the lower end of the water inlet pipe is inserted into the upper portion of the filter screen cylinder. According to the device, solid particles are discharged upwards through the spiral conveying device, it is ensured that water and the solid particles cannot be discharged together, meanwhile, the filter screen cylinder is installed below the water inlet pipe and directly communicates with the lower portion of the shell, and the solid particles are effectively prevented from falling into other areas to be accumulated due to water flow fluctuation.

Description

Technical Field

[0001] The utility model relates to the field of sewage treatment, and more specifically, to a sand-water separator. Background Art

[0002] With the rapid development of industrialization and urbanization, the problem of water resource pollution has become increasingly prominent. Many industrial processes, such as mineral processing, oil extraction, and urban sewage treatment, will produce sewage rich in solid particles. If these particles are directly discharged without treatment, it will not only seriously pollute the environment but also may damage subsequent treatment equipment.

[0003] Currently, for the problem of solid particles in sewage treatment, a sand-water separator is mostly used. The sand-water separators on the market currently include sedimentation type, filtration type, centrifugal type, etc. Among them, the sedimentation type sand-water separator mainly relies on the action of gravity to make solid particles settle to the bottom of the container and discharge through the sewage outlet.

[0004] However, there are some problems with the existing sedimentation type sand-water separators. For example, it is necessary to regularly open the sewage outlet to remove the settled solid particles, and some water is often discharged during this process. In addition, when a large amount of solid particles accumulate, there is a risk of entering the return pipe, which will interfere with the subsequent treatment process. Summary of the Utility Model

[0005] Based on the above technical problems, the utility model proposes a sand-water separator.

[0006] A sand-water separator includes a separation tank and a screw conveyor. The bottom of the separation tank is an inclined plane that slopes upward. The lower parts of the sides of the separation tank are all converged inward to form a bottom surface that is narrowed at the bottom and slopes upward. The screw conveyor is installed at the bottom of the separation tank. A slag discharge pipe is provided in front of the screw conveyor, and the height of the slag discharge pipe is higher than the top plate of the separation tank. The rear end opening of the screw conveyor is communicated with the inside of the separation tank. A short pipe is provided at the opening, and the short pipe is communicated with the screw conveyor. A filter screen cylinder is provided at the upper end of the short pipe. An overflow tank is provided at the upper part of the rear wall of the separation tank. A return pipe is provided on the side wall of the separation tank at one end of the overflow tank. An inlet pipe is provided on the top plate of the separation tank. The filter screen cylinder is directly below the inlet pipe, and the lower end of the inlet pipe is inserted into the upper part of the filter screen cylinder.

[0007] In a possible implementation, the screw conveyor device includes a housing, a core shaft, a driving device, and screw blades. The housing is a hollow tube. The core shaft is axially installed rotatably inside the housing. A driving device is installed at the upper end of the housing, and the driving device drives the core shaft to rotate. Screw blades are provided on the core shaft. The housing is fixedly installed at the middle of the bottom of the separation box, and both the short pipe and the filter mesh cylinder are arranged vertically.

[0008] In a possible implementation, an observation window with a transparent glass plate installed is provided on the rear wall of the separation box.

[0009] In a possible implementation, a normally closed sewage pipe is provided at the lowest point of the rear part of the separation box.

[0010] Advantageous effects: The device realizes the upward discharge of solid particles through the screw conveyor device and can operate continuously. Its design feature is that the upper end is higher than the separation box to ensure that water will not be discharged together with the solid particles. In addition, a filter mesh cylinder is installed below the water inlet pipe of the device, and the cylinder leads directly to the lower part of the housing, effectively preventing solid particles from falling into other areas and accumulating due to water flow fluctuations. Description of the Drawings

[0011] Figure 1 Shows the structural schematic diagram of the present utility model;

[0012] Figure 2 Shows the front view of the present utility model;

[0013] Figure 3 Shows the rear view of the present utility model;

[0014] Figure 4 Shows Figure 3 the sectional view taken along the line A-A of Detailed Embodiments

[0015] In order to be able to more clearly understand the above-mentioned objects, features, and advantages of the present utility model, the present utility model will be further described in detail below with reference to the drawings and specific embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0016] Such as Figures 1 to 4A sand-water separator is shown as follows. The separation tank 1 is fixed on the ground by the support legs 3. The bottom of the separation tank 1 is designed as an upwardly inclined slope. The lower parts of the sides of the separation tank 1 are all converged inwardly, forming a bottom surface that is narrowed at the lower part and inclined upward. The screw conveyor device 2 is installed at the bottom surface of the separation tank 1. The screw conveyor device 2 includes a housing 201, a core shaft 202, a driving device 204 and screw blades 203. The housing 201 is a hollow pipe, and a lining plate 207 is provided inside the housing 201. The core shaft 202 is axially installed rotatably inside the housing 201. The driving device 204 is installed at the upper end of the housing 201. The driving device 204 drives the core shaft 202 to rotate. Screw blades 203 are provided on the core shaft 202. A slag discharge pipe 205 is provided at the lower side of the front part of the housing 201. The height of the slag discharge pipe 205 is higher than the top plate 4 of the separation tank 1. In this way, when the driving device 204 drives the screw blades 203 to rotate slowly, the water inside the housing 201 will not be brought to the slag discharge pipe 205.

[0017] The rear end opening of the screw conveyor device 2 is communicated with the inside of the separation tank 1. A short pipe 206 is provided at the opening. The short pipe 206 is communicated with the screw conveyor device 2. A filter screen cylinder 7 is provided at the upper end of the short pipe 206. A water inlet pipe 5 is provided directly above the filter screen cylinder 7. The water inlet pipe 5 is fixed on the top plate 4 of the separation tank 1, and the lower end of the water inlet pipe 5 is located in the upper part of the filter screen cylinder 7.

[0018] When the water with solid particles enters the separation tank 1 from the water inlet pipe 5, since both the short pipe 206 and the filter screen cylinder 7 are vertically arranged, the solid particles will directly enter the filter screen cylinder 7, then enter the housing 201 through the short pipe 206, and are conveyed to the upper end of the housing 201 by the screw blades 203 and discharged outward from the slag discharge pipe 205.

[0019] After the solid particles are sent out by the screw conveyor device 2, the filtered water overflows into the overflow tank 10 provided at the upper part of the rear wall of the separation tank 1, and is discharged by the return water pipe 6 provided at one end of the overflow tank 10.

[0020] In a possible implementation manner, an observation window 8 is provided on the rear wall of the separation tank 1, and a transparent glass plate is installed to observe the internal situation of the separation tank 1, such as checking whether the mesh holes of the filter screen cylinder 7 are blocked in a large area, and observing whether small particles or sludge are accumulated at the bottom of the separation tank 1 (the positions on both sides of the housing 201). If there is an accumulation phenomenon, the inside of the separation tank 1 needs to be cleaned. Two normally closed sewage discharge pipes 9 can also be provided at the lowest point of the rear part of the separation tank 1, respectively located on both sides of the housing 201. When small particles or sludge accumulate, the sewage discharge pipes 9 can be opened for discharge, thus avoiding the trouble of shutting down for cleaning.

[0021] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, the present utility model may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A sand-water separator, characterized in that: include: A separation box and a screw conveying device, wherein the bottom of the separation box is designed to be an upwardly inclined inclined surface, and the lower parts of the sides of the separation box are all gathered inwardly to form a bottom surface which is narrowed at the lower part and inclined upwardly, and the screw conveying device is installed at the bottom surface of the separation box, and a slag discharge pipe is provided at the front part of the screw conveying device, and the height of the slag discharge pipe is higher than the top plate of the separation box, and the rear end opening of the screw conveying device is connected with the interior of the separation box, and a short pipe is provided at the opening, and the short pipe is connected with the screw conveying device, and a filter mesh cylinder is provided at the upper end of the short pipe; an overflow trough is provided at the upper part of the rear wall of the separation box, and a return water pipe is provided on the side wall of the separation box at one end of the overflow trough, and an inlet pipe is provided on the top plate of the separation box, and the filter mesh cylinder is directly below the inlet pipe, and the lower end of the inlet pipe is inserted into the upper part of the filter mesh cylinder.

2. The sand-water separator according to claim 1, characterized in that: The spiral conveying device includes an outer shell, a core shaft, a driving device and spiral blades. The outer shell is a hollow tube. The core shaft is rotatably installed axially in the outer shell. The upper end of the outer shell is installed with a driving device. The driving device drives the core shaft to rotate. The core shaft is provided with spiral blades. The outer shell is fixedly installed in the middle of the bottom of the separation box, and the short tube and the filter screen cylinder are both vertically arranged.

3. The sand-water separator according to claim 1, characterized in that: An observation window with a transparent glass plate is provided on the rear wall of the separation box.

4. The sand-water separator according to claim 1, characterized in that: A normally closed sewage pipe is provided at the lowest point of the rear of the separation box.

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