CN204401774U - Underground open type storage pond - Google Patents

Abstract

The utility model discloses an underground open storage pool, which comprises a pool body, one end of the pool body is connected with a water inlet box culvert, and the other end is connected with a water outlet box culvert. The body is divided into two parts, the rainwater pump catchment area and the regulation and storage area. Close to one end of the water outlet box culvert, the sewage pumps are respectively arranged on both sides of one end close to the water inlet box culvert, and the inner bottom surface of the pool body is provided with a water inlet trough, and the The water inlet trough is arranged by sloping down from the rainwater pump to the sewage pump, and the sewage and its sediment in the pool are discharged to the outside through the sewage pump. The utility model can intercept the initial rainwater without increasing the maintenance workload of the original operation management of the rainwater pumping station, and further effectively reduces the degree of pollutant deposition at the bottom of the pool and the difficulty of cleaning operation.

Description

Underground open storage tank

technical field

The utility model relates to the technical field of underground sewage discharge process design, in particular to an underground open storage pool.

Background technique

At present, the management unit is very troubled by the management and operation of the storage tanks that have been built. The storage tanks of several pumping stations that are in operation have not been maintained so far. During the flood season, the storage tanks are often full of water and cannot be used anymore. Intercept initial rainwater. At present, most of the storage tanks under construction are underground closed storage tanks, and the main disadvantages are as follows:

1. There are many equipments, and the maintenance management is difficult;

2. The underground space is seriously polluted, and maintenance personnel cannot go down to check and repair the storage tanks that are already in operation;

3. The water quality of combined system is complicated. Although the automatic flushing water system can be used for the sludge at the bottom of the storage tank, auxiliary manual cleaning is still required.

Therefore, the applicant is committed to developing an underground open storage tank that can intercept the initial rainwater without increasing the maintenance workload of the original operation and management of the rainwater pumping station, and further effectively reduce the degree of pollutant deposition at the bottom of the tank and The cleaning operation is difficult.

Utility model content

In view of the above-mentioned deficiencies of the prior art, the utility model proposes an underground open storage tank that can intercept the initial rainwater without increasing the maintenance workload of the original operation and management of the rainwater pumping station, and further effectively reduces the pool bottom. The degree of pollutant deposition and the difficulty of cleaning operations.

In order to achieve the above purpose, the utility model provides an underground open storage tank, which includes a pool body, one end of the pool body is provided with a water inlet box culvert, and the other end is connected with a water outlet box culvert.

The pool body is divided into two parts: a rainwater pump catchment area and a regulation and storage area. The rainwater pump catchment area is above the regulation and storage area. A rainwater pump and a sewage pump are arranged in the pool body.

The rainwater pump is arranged on one end of the pool body provided with the outlet culvert, and is used to lift the rainwater in the pool body into the outlet box culvert for discharge.

At least two of the sewage pumps are respectively arranged on both sides of the pool body provided with one end of the water inlet box culvert, and the inner bottom surface of the pool body is provided with a water inlet flow groove, and the water inlet flow groove It is arranged to descend from the rainwater pump to the sewage pump, and the sewage and its sediment in the pool are discharged to the outside through the sewage pump.

Preferably, a first water inlet grill is provided at the conduction position between the pool body and the water inlet box culvert, and a water retaining plate is erected on both sides of the first water inlet grill, A second water inlet grille is respectively arranged between the two water baffles and the adjacent side walls of the pool body, and the sewage pump is covered by the ends and side walls of the pool body and the second inlet grille. The water grid and the water retaining plate are surrounded by a corner of the pool body.

Preferably, the sewage pump is a water pump equipped with a flushing valve. When the sewage pump is started, the sludge deposited on the bottom of the pool is stirred and pumped out through the flushing valve.

Preferably, there are 2-6 sets of sewage pumps, which are divided into two groups, and one set of sewage pumps is set corresponding to a corner of the pool body.

Preferably, the number of the sewage pumps is 4, the type is a submersible centrifugal pump, and the flow rate of each sewage pump is Q=0.2m ³ /s.

Preferably, there are 2-6 rainwater pumps, which are evenly arranged on one end of the pool body, and diversion ribs are arranged between the water inlets of adjacent rainwater pumps.

Preferably, the number of the rainwater pumps is four, and the type is a submersible axial flow pump, and the flow rate of each rainwater pump is Q=2.0m ³ /s.

The beneficial effects of the underground open storage pool of the present utility model are as follows:

1. In the utility model, the rainwater pump catchment area and the storage area are arranged in the same pool body, which is divided into upper and lower layers. The upper layer of water is the water body of the sump pool of the rainwater pump station, and the lower layer of water is the volume of the storage tank. The rain and sewage pumps are set separately and arranged relative to each other, which can effectively intercept the initial rainwater without increasing the maintenance workload of the original operation and management of the rainwater pumping station. The utility model combines the rainwater pump catchment area and the regulation and storage area into one pool body, which can skillfully realize that in the dry season, the rainwater pump does not drive, and only the sewage pump pre-empts the accumulated water in the pool body. Evacuate the operation to reduce the water level in the pool and make room to accept the original pollutants in the combined pipeline and the arrival of initial rainwater.

2. The utility model effectively reduces the degree of pollutant deposition at the bottom of the pool, the difficulty of cleaning operation, and the pollution degree of the rainwater pump directly discharged into the river. The utility model can discharge the pollutants deposited in the lower part of the general conventional rainwater pump, that is, more than 60% of the pipeline sediments are pumped and discharged by the sewage pump to the external sewage well, which is convenient for the management personnel of the pump station to carry out the cleaning operation on the ground, and some pollution The waste is brought into the sewage interception system by the sewage pump to reduce the pollution caused by the rainwater pump discharged into the river in rainy days. Since the water collection area of the rainwater pump of the utility model is above the regulation and storage area, the sediments in the water collection area of the rainwater pump directly fall into the regulation and storage area, and finally deposit on the water inlet flow groove on the bottom surface of the pool body. The design of the tank is inclined to the sewage pump. During the working process of the sewage pump, the sediment will automatically accumulate towards the sewage pump, which is very conducive to the centralized cleaning and discharge of the sediment, and at the same time avoids the rainwater pump from being blocked. Reduce pollutants caused by direct discharge of rainwater pumps.

3. The utility model can start the number of rainwater pumps and sewage pumps according to the amount of incoming water, which not only solves the outlet for dry sewage on non-rainfall days, but also can be used as a pumping pool by the sewage pump (including the rainwater pump catchment area and storage area) Sewage in the area) uses the free capacity of the interception main pipe in sunny days to pump the sedimented sewage on the bottom surface of the tank body to the sewage interception main pipe, and then sends it to the sewage treatment system for treatment after being discharged, which effectively improves the rainwater pump catchment area and Deteriorating water quality in storage areas.

4. The first water inlet grid, the water retaining plate and the second water inlet grid added by the utility model further improve the cleaning effect of the utility model on sediments. The water grid is automatically cleaned of slag, without the need for personnel to go deep into the storage tank for cleaning.

5. The utility model does not need to install a lot of mechanical washing, deodorizing and other equipment in the pool body, and the mechanical equipment is less and the management is simple.

6. Compared with the split-type lower storage tank, the utility model has a shallower embedding depth of the upper rainwater pump house.

The conception, specific structure and technical effects of the present utility model will be further described below in conjunction with the accompanying drawings, so as to fully understand the purpose, characteristics and effects of the present utility model.

Description of drawings

Fig. 1 is a schematic plan layout diagram of an underground open storage tank in a specific embodiment.

FIG. 2 is a schematic cross-sectional view of A-A in FIG. 1 .

FIG. 3 is a schematic cross-sectional view of B-B in FIG. 1 .

FIG. 4 is a schematic cross-sectional view of C-C in FIG. 3 .

Detailed ways

As shown in Figure 1, an underground open storage tank in this embodiment includes a pool body 100, one end of the pool body 100 is provided with an inlet tank culvert 200, and the other end is provided with an outlet tank. Water tank culvert 300.

As shown in FIG. 2 and FIG. 3 , the pool body 100 of this embodiment is divided into two parts: a rainwater pump catchment area 110 and a regulation and storage area 120. The rainwater pump catchment area 110 is located above the regulation and storage area 120. A rainwater pump 130 and a sewage pump 140 are provided.

As shown in FIG. 2 , the rainwater pump 130 of this embodiment is arranged on one end of the pool body 100 provided with the outlet culvert 300 , and is used to lift the rainwater in the pool body 100 into the outlet box culvert 300 for discharge.

As shown in Figure 3, at least two sewage pumps 140 in this embodiment are respectively arranged on both sides of one end of the pool body 100 provided with the water inlet box culvert 200, and the inner bottom surface of the pool body 100 is provided with a water inlet flow tank 150, The water inlet trough 150 is set downwardly from the rainwater pump 130 to the sewage pump 140, and the sewage and its sediments in the pool body 100 are discharged to the outside through the sewage pump 140.

Specifically, as shown in FIG. 4 , in this embodiment, a first water inlet grill 160 is provided at the conduction position between the pool body 100 and the water inlet box culvert 200 , and each side of the first water inlet grill 160 is erected. A water retaining plate 170 is provided, and a second water inlet grille 180 is respectively provided between the two water retaining plates 170 and the adjacent side walls of the pool body 100. The two water inlet grills 180 and the water retaining plate 170 are surrounded by a corner of the pool body 100 . That is, as shown in Figure 4, two sewage outlet wells 400 are formed by the end of the pool body 100, the side wall, the water retaining plate 170 and the second water inlet grille 180, and the sewage pumps 140 are divided into two groups respectively in the sewage In the water outlet well 400 , the water flow in the pool body 100 is filtered by the second water inlet grid 180 and enters the sewage water outlet well 400 , and is lifted by the sewage pump 140 to be discharged to the outside.

Exemplarily, as shown in the figure, in this embodiment, four submersible centrifugal pumps are selected as the sewage pump 140, the flow rate of each submersible centrifugal pump is Q=0.2m ³ /s, and the four sewage pumps are divided into 140 There are two groups, two in each group, and one group of sewage pumps 140 is set corresponding to a corner of the pool body 100 (ie, the sewage outlet well 400). Moreover, the sewage pump 140 in this embodiment is a submersible centrifugal pump equipped with a flushing valve (not shown in the figure). When the sewage pump 140 is started, the sludge deposited on the bottom of the pool is stirred and pumped out through the flushing valve. In this embodiment, four submersible axial flow pumps with a flow rate of Q=2.0m ³ /s are selected as the rainwater pumps 130. The four rainwater pumps 130 are evenly arranged on one end of the pool body 100, and the water inlets of the adjacent rainwater pumps 130 There are diversion ribs 190 between them. Three diversion ribs 190 as shown in FIG. The drainage linear channel of the rainwater pump 130.

Exemplarily, the first water inlet grill 160 and the second water inlet grill 180 of this embodiment use a mobile grill cleaning machine to intercept larger suspended or floating objects in the pool body 100 and lift them to the ground to clean up. Most of the rest of the sediment enters the sewage outlet well 400 and is lifted by the sewage pump 140 to be discharged into the external sewage collection system for treatment.

Of course, in other specific implementation modes, the underground open storage tank of the present utility model can also add other components according to actual needs, or adjust the specific setting quantity, position and model of each component, such as the rainwater pump and sewage pump. The quantity can also be 2 or 6 other types of water pumps, etc., which will not be repeated here.

Exemplarily, the specific application of the underground open storage tank in this embodiment is as follows:

According to the accompanying drawings of this embodiment and the above-mentioned descriptions, the underground open-type storage tank is built. In the dry season, the amount of sewage to be treated is not much. The rainwater pump 130 does not drive, and only the sewage pump 140 is activated as needed to complete the tank body. The stagnant water in 100 is discharged, and the whole pool body 100 mainly functions as a regulation and storage area, which can effectively reduce the silt in the pool body and the continuous deterioration of stagnant water quality, and overcome the defects of polluting rivers through the rainwater pump 130 discharge.

Before the rainy season comes, the accumulated water in the pool body 100 can be pre-evacuated by the sewage pump 140 in advance, so as to reduce the water level in the pool body 100 and make room for backup.

When the rainy season comes, start the rainwater pump 130 and the sewage pump 140 according to the water volume and water quality, and the whole pool body 100 can give full play to its advantages of being a rainwater pump catchment area and a regulation and storage area, which greatly improves the regulation and storage capacity. The storage capacity and flexibility of the storage tank also reduce the degree of pollution discharge. Through the ingenious structural design of this embodiment, the sewage with a high degree of pollution is collected into the sewage outlet well 400, and is mainly discharged into the pump room by the sewage pump 140. The internal and external sewage wells are discharged through DN1000 sewage pipes, and the sewage with a low degree of pollution is directly discharged into the river by the rainwater pump 130, which is mainly divided into the following two ways at the same time:

Municipal drainage pipe introduction → water inlet gate well → water inlet box culvert → pool body (rainwater pump catchment area) → rainwater pump lifting → rainwater outlet pressure well → water outlet high level gate well → outlet water tank culvert pipe → discharge into rivers;

Municipal drainage pipe introduction → water inlet gate well → water inlet tank culvert → pool body (regulation and storage area) → sewage pump lifting → water outlet well → flow meter well → discharge into municipal sewage pipe.

After the rainy season, when most of the accumulated water has been discharged, the rainwater pump 130 can be turned off, and only the sewage pump 140 can be used to discharge. Combined with the function of the water inlet flow tank 150, the sediment on the inner bottom of the pool body 100 can be collected into the sewage outlet well It is brought out by the second water inlet grid 180 or the sewage pump 140 .

The preferred specific embodiments of the present utility model have been described in detail above. It should be understood that those skilled in the art can make many modifications and changes according to the concept of the present utility model without creative efforts. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of the utility model through logical analysis, reasoning or limited experiments on the basis of the prior art should be within the scope of protection defined by the claims .

Claims (7)

1. a underground open type storage pond, comprises a pond body, and the end conducting on the body of described pond is provided with into water box culvert, and the other end conducting is provided with water outlet box culvert; It is characterized in that:

Described pond body is divided into rainwater pump catchment and the top in regulate and store district's two parts, the district that regulates and stores described in described rainwater pump catchment is in, and is provided with rainwater pump and foul water pump in the body of described pond;

Described rainwater pump is arranged in described pond body and is provided with on an end of described water outlet box culvert, discharges for being promoted in described water outlet box culvert by the rainwater in the body of described pond;

At least two described foul water pumps are arranged in described pond body and are provided with on two side positions of an end of described water inlet box culvert, the inner bottom surface of described pond body is provided with inlet duct, described inlet duct is arranged to the inclination decline of described foul water pump place by described rainwater pump, the sewage in the body of described pond and deposit thereof is externally discharged by described foul water pump.

2. underground as claimed in claim 1 open type storage pond, it is characterized in that: on the conduction position of described pond body and described water inlet box culvert, be provided with the first trash rack, respectively erect in the both sides of described first trash rack and be provided with a watertight shutter, one second trash rack is respectively provided with between the sidewall of watertight shutter described in two and close described pond body, described foul water pump by the end of described pond body and sidewall, and described second trash rack and described watertight shutter be around in a bight of described pond body.

3. underground as claimed in claim 1 or 2 open type storage pond, is characterized in that: described foul water pump is the water pump wearing flushing valve, by described flushing valve when described foul water pump starts, pumps discharge after being stirred by the mud of pond bottom sediments.

4. underground as claimed in claim 3 open type storage pond, is characterized in that: described foul water pump is 2-6 platform, is divided into two groups, and a bight of the corresponding described pond of foul water pump described in group body is arranged.

5. underground as claimed in claim 4 open type storage pond, is characterized in that: the quantity of described foul water pump is 4, and type is submerged centrifugal pump, and described in every platform, the flow of foul water pump is Q=0.2m ³/ s.

6. underground as claimed in claim 1 or 2 open type storage pond, is characterized in that: described rainwater pump is 2-6 platform, is evenly arranged on an end of described pond body, be provided with water conservancy diversion rib between the water inlet of adjacent described rainwater pump.

7. underground as claimed in claim 6 open type storage pond, is characterized in that: the quantity of described rainwater pump is 4, and type is submersible axial flow pump, and described in every platform, the flow of rainwater pump is Q=2.0m ³/ s.