CN206604231U - A kind of grating type desilting device - Google Patents

Abstract

The utility model provides a kind of grating type desilting device, including water inlet, settling pit and delivery port, water inlet is calibre-changeable, the big one end of bore is connected with settling pit, and grid, settling pit bottom angled are provided with settling pit, the relatively low side of settling pit is provided with sand surfing groove, the higher side of the settling pit is equipped with overflow plate, and overflow plate connection Rinsing Area, Rinsing Area is connected with delivery port.Using said structure, current containing silt enter settling pit by water inlet, by the deceleration of diffusion region and grid, water velocity is reduced, and the silt taken in husky reduced capability, current of current is settled, sand surfing groove is gathered under gravity, clear water flows into Rinsing Area by overflow plate, is discharged by discharge outlet, reaches the purpose of separation of sediment.

Description

A grill type sand settling device

technical field

The utility model belongs to the field of solid-liquid separation, and relates to a sediment separation device, in particular to a grid type sand sedimentation device.

Background technique

With the advancement of science and technology and the development of society, people's lives are greatly facilitated. The development of remote areas has attracted more and more attention from various countries. In some areas, the water flow is too sandy and the water quality is poor, which seriously restricts the development of the regional economy. How to effectively separate the sediment in the water flow has become a research hotspot. In the prior art, settling tanks are often used to settle sediment, and there are problems such as discontinuous working process and difficult sand removal in settling tanks. Some settling devices use diffusion deceleration and grid deceleration, but because they are used alone, the deceleration effect is limited, and it cannot achieve relatively high efficiency. Good for sand removal purposes.

Chinese patent document CN 103463838 A discloses a grit chamber for sewage treatment, which includes a trumpet-shaped sedimentation tank, a grid bar, a screw conveyor, a mud tank, a siphon, a sand-water separator, and a flushing device. The nozzle is in the same direction as the water flow, so it is easy to carry out the sediment in the grit chamber, and the settlement effect is reduced.

Contents of the invention

The technical problem to be solved by the utility model is to provide a grid-type desilting device, which solves the problem that the water flow in some areas contains too much sand and the drinking water quality of residents is poor.

In order to solve the above-mentioned technical problems, the technical solution adopted by the utility model is: a grid-type desilting device,

Including the water inlet, the grit chamber and the water outlet, the water inlet is a variable diameter, the end of the water inlet with a larger diameter is connected to the grit chamber, a grille is installed in the grit chamber, the bottom of the grit chamber is inclined, and the lower part of the grit chamber A sand flushing tank is provided on one side, and an overflow plate is installed on the higher side of the grit chamber, the overflow plate is connected to a clean water tank, and the clean water tank is connected to a water outlet.

In a preferred solution, the overflow plate is stepped, and the end close to the water inlet is higher.

In a preferred solution, the inclination angle of the bottom of the grit chamber is 30°.

In a preferred solution, the grid is in the shape of a semi-cylindrical or a grid with holes.

In a preferred solution, the number of the grids is 3-8.

In a preferred solution, the grid is made of stainless steel, and the grid is riveted with the grit chamber.

In a preferred solution, the sand flushing tank is arc-shaped.

In a preferred solution, the sand flushing tank is connected with a sand discharge device.

Further, the sand discharge device is a sand discharge port and a valve, and the sand flushing tank is connected to the sand discharge port through a valve.

The utility model provides a grid-type sand settling device. When the above structure is adopted, the water flow containing sediment enters the sand settling tank from the water inlet, and after passing through the diffusion zone and the deceleration of the grid, the sand in the water flow settles. The lower the velocity of the water flow, the weaker the sand-carrying capacity of the water flow. The bottom of the grit chamber is inclined at a certain angle, and the sand washing tank is located at a lower position. The sediment moves to the sand washing tank of the grit chamber under the action of gravity, and the sediment finally settles in the sand washing tank, and the clear water flows from the overflow plate. Enter the clear water tank and discharge through the drain to achieve the purpose of separating sediment. In the preferred scheme, the overflow plate is stepped, and the end away from the water inlet is lower. Under the action of the grille, the water velocity at the end far away from the water inlet is lower, and the amount of sediment carried by the water flow is less. The overflow plate is here The lower height at one end facilitates the overflow of clear water. When the inclination angle of the bottom of the grit chamber is 30°, the sediment can be well gathered to the sand flushing tank. Using multiple grids to decelerate the water flow can achieve the purpose of multi-stage deceleration. The sand flushing tank is connected with a sand discharge device, which can ensure the normal operation of the sand settling device.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described:

Fig. 1 is the structural representation of the utility model.

Fig. 2 is the sectional view of the utility model along A-A.

Fig. 3 is the sectional view of the utility model along B-B.

Among the figure: water inlet 1, grit chamber 2, water outlet 3, grille 4, overflow plate 5, clear water tank 6, sand washing tank 7, sand discharge device 8, sand discharge port 81, valve 82.

detailed description

As shown in Figures 1 and 2, a grid-type desilting device includes a water inlet 1, a desilting tank 2, and a water outlet 3. The water inlet 1 has a variable diameter, and the cross-sectional size gradually increases. The specific size is determined by the water flow rate. Water inlet 1 is made of concrete. The large end of the water inlet 1 is connected to the grit chamber 2, the grit chamber 2 is provided with a grid 4, the number of the grate is 7, and the grate 4 is made of stainless steel. riveted. The bottom of the grit chamber 2 is inclined, and the inclination angle is set to 30°. The lower side of the grit chamber 2 is provided with a sand washing tank 7, which is arc-shaped, and the higher side of the grit chamber 2 is provided with an overflow The plate 7 and the overflow plate 5 are connected to the clean water tank 6, and the clean water tank 6 is connected to the water outlet 3.

The high-speed water flow enters from the narrow end of the water inlet 1, passes through the diffusion zone, the cross-sectional area of the water inlet 1 gradually increases, the flow velocity of the water flow slows down, and the low-speed water flow enters the grit chamber 2, and under the action of the grille 4, the water flow further reduces the flow velocity and promotes Sedimentation. Under the action of gravity, the settled silt accumulates in the sand flushing tank 7 and is discharged through the sand discharge device 8;

In a preferred solution, as shown in FIG. 3 , the overflow plate 5 is stepped, and the end close to the water inlet 1 is high. Under the action of the grille 4, the water velocity at the end away from the water inlet 1 is relatively low, and the amount of sediment carried by the water flow is relatively small. The height of the overflow plate 5 at this end is relatively low, which is conducive to the overflow of clear water.

Further, the sand discharge device 8 can use a sand discharge port 81 and a valve 82 , and the sand flushing tank 8 is connected to the sand discharge port 81 through the valve 82 . Open the valve 82, the water level in the grit chamber 2 is higher, and the high-speed water impacts the sediment in the sand washing tank 7, and the sediment flows out from the sand washing tank 7, and finally gets rid of by the sand discharge port 81. After the sand washing is finished, close the valve 82.

Above-mentioned embodiment is only the preferred technical scheme of the present utility model, and should not be considered as the restriction to the present utility model, and the protection scope of the present utility model should be the technical solution described in the claims, including the technology in the technical solution described in the claims. An equivalent alternative to the feature is the scope of protection. That is, equivalent replacement and improvement within this scope are also within the protection scope of the present utility model.

Claims (9)

1. a kind of grating type desilting device, it is characterised in that：Including water inlet（1）, settling pit（2）And delivery port（3）, it is described enter The mouth of a river（1）For calibre-changeable, the water inlet（1）The big one end of bore and settling pit（2）Connection, the settling pit（2）It is interior to install There is grid（4）, the settling pit（2）Bottom angled, the settling pit（2）Low side is provided with sand surfing groove（7）, the settling pit （2）High side is equipped with overflow plate（5）, the overflow plate（5）Connect Rinsing Area（6）, the Rinsing Area（6）With delivery port（3） Connection.

2. a kind of grating type desilting device according to claim 1, it is characterised in that：The overflow plate（5）It is stepped, Close to water inlet（1）One end it is high.

3. a kind of grating type desilting device according to claim 1, it is characterised in that：The settling pit（2）Bottom angled Angle is 30 °.

4. a kind of grating type desilting device according to claim 1, it is characterised in that：The grid（4）For semi-cylindrical Shape or the screen with hole.

5. a kind of grating type desilting device according to claim 1, it is characterised in that：The grid（4）Quantity is 3~8 It is individual.

6. a kind of grating type desilting device according to claim 1, it is characterised in that：The grid（4）Using stainless steel Material, grid（4）With settling pit（2）Riveting.

7. a kind of grating type desilting device according to any one of claim 1 or 2, it is characterised in that：The sand surfing groove（7） For circular arc.

8. a kind of grating type desilting device according to any one of claim 1 or 2, it is characterised in that：The sand surfing groove（7） It is connected with sand discharge apparatus（8）.

9. a kind of grating type desilting device according to claim 8, it is characterised in that：The sand discharge apparatus（8）For sand discharge Mouthful（81）And valve（82）, the sand surfing groove（7）Pass through valve（82）With sediment ejection opening（81）Connection.