Regulation and storage tank for flushing by emptying and replenishing water of submersible sewage pump

Abstract

The utility model discloses a regulation and storage tank for flushing by emptying and replenishing water through a submersible sewage pump. The regulation and storage tank comprises a regulation and storage tank body, a water inlet pipe; the water storage chamber is formed in the center of the bottom of the regulation and storage pond body and is defined by a plurality of water storage weir walls which are arranged in the circumferential direction; the flap valve type flushing door is arranged in each water storage weir wall; the submersible sewage pump is arranged in the pump pit of the regulation and storage tank body; a drainage connecting pipe, a drainage pressure pipe, a backflow flushing pipe and a three-way joint; the emptying stop valve and the water replenishing stop valve are mounted on the drainage pressure pipe and the backflow flushing pipe; the liquid level sensor is arranged in the regulation and storage tank body; the flushing control system is respectively connected with each submersible sewage pump, each flap valve type flushing door, the emptying stop valve, the water replenishing stop valve and the liquid level sensor. The emptying and water replenishing functions of the submersible sewage pump are combined, and the functions of supplying water to the water storage chamber when the rainfall is small and draining water during emptying are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of regulating and storing ponds, in particular to a regulating and storing pond which is emptied, replenished and flushed by a submersible sewage pump. Background Art

[0002] The initial rainwater stays in the regulating reservoir and will settle and accumulate mud in the regulating reservoir. Therefore, the regulating reservoir needs to be flushed. The net depth of the regulating reservoir currently implemented is large, and it is impossible to use manual cleaning methods. An automatic flushing water system needs to be designed. At present, the commonly used automatic flushing method for regulating reservoirs is gate-type self-flushing. When the regulating reservoir is storing water, the water storage chamber of the flap gate is storing water at the same time. When the rainwater regulating reservoir is emptied and the bottom of the pool needs to be cleaned, the flap gate is instantly opened to automatically flush the bottom of the reservoir or the downstream main canal. However, during flushing, it is necessary to ensure that the water volume in the water storage chamber meets the flushing water volume requirements. When the rainfall is small, the water storage chamber cannot store enough flushing water and the flushing task cannot be completed.

[0003] Submersible sewage pumps are widely used in regulating and storage tank projects. They are widely used and mostly use coupled submersible sewage pumps to empty the initial rainwater into the sewage system. The submersible sewage pump draws the initial rainwater from the system pump pit into the pump chamber through the suction pipe, and lifts the initial rainwater through the centrifugal pressurization of the impeller. The traditional design of submersible sewage pumps for regulating and storage tanks only uses its drainage and emptying function, and does not fully utilize its outlet pressure to achieve other functions.

[0004] Therefore, the applicant has found a solution to the above-mentioned problem through beneficial exploration and research, and the technical solution to be introduced below is produced in this context. Utility Model Content

[0005] The technical problem to be solved by the utility model is: to address the deficiencies in the prior art and to provide a regulating reservoir for emptying, replenishing and flushing using a submersible sewage pump, fully utilizing the outlet pressure head of the submersible sewage pump, and combining the regulating reservoir flushing system to improve the flushing function, which not only maximizes the economic benefits of the submersible sewage pump, but also ensures that the regulating reservoir still has enough water storage capacity to complete the flushing action when there is less rainfall.

[0006] The technical problem to be solved by the present invention can be achieved by adopting the following technical solutions:

[0007] A storage tank for emptying, replenishing and flushing by using a submersible sewage pump, comprising:

[0008] A regulating and storing tank body, wherein a top plate is arranged on the top of the regulating and storing tank body, an annular water collecting trough is formed at the periphery of the bottom thereof, and a pump pit connected to the annular water collecting trough is formed at the side edge of the bottom of the regulating and storing tank body;

[0009] A water inlet pipe, the water inlet pipe is arranged on the upper part of the regulating reservoir body;

[0010] A water storage chamber is formed at the central position of the bottom of the regulating reservoir body, and the water storage chamber is surrounded by a plurality of circumferentially arranged water storage weir walls;

[0011] Flush gates of the flap type installed in the wall of each water storage weir;

[0012] At least one submersible sewage pump disposed in the pump pit of the regulating and storage tank;

[0013] A sewage connection pipe, a drainage pressure pipe, a reflux flushing pipe and a three-way joint, wherein one end of the sewage connection pipe is respectively connected to the sewage outlet of each submersible sewage pump, and the other end thereof is connected to the liquid inlet of the three-way joint; the drainage pressure pipe is arranged at the upper part of the regulating storage tank body, and one end thereof is connected to a liquid outlet of the three-way joint; one end of the reflux flushing pipe is connected to the other liquid outlet of the three-way joint, and the other end thereof extends to the upper part of the water storage chamber;

[0014] A vent stop valve and a water supply stop valve installed on the drainage pressure pipe and the reflux flushing pipe;

[0015] A liquid level sensor installed in the reservoir; and

[0016] A flushing control system is respectively connected with each submersible sewage pump, each flap-type flushing door, a venting stop valve, a water supply stop valve and a liquid level sensor.

[0017] In a preferred embodiment of the present invention, the regulating reservoir body is a circular regulating reservoir body structure, which is in a fully underground form or a semi-underground form.

[0018] In a preferred embodiment of the present utility model, the water storage weir wall adopts a reinforced concrete structure, and the bottom slope of the water storage chamber is 15% to 25%.

[0019] In a preferred embodiment of the utility model, a plurality of flushing gallery partition walls are circumferentially arranged on the bottom surface of the regulating tank body, one end of each flushing gallery partition wall extends to the outer circumferential surface of the water storage chamber, and the other end thereof extends to the inner edge of the annular water collecting trough, and a fan-shaped flushing gallery is formed between two adjacent flushing gallery partition walls, and the plurality of fan-shaped flushing galleries are in a one-to-one correspondence with the plurality of flap-type flushing doors.

[0020] In a preferred embodiment of the present utility model, the bottom surface slope of the fan-shaped flushing corridor is 1% to 2%.

[0021] In a preferred embodiment of the utility model, the width of the annular water collection tank is 0.5m to 1.5m, the depth is designed according to the water collection requirements, and the bottom slope is 3% to 5%, so that the water volume between the stop water level of the submersible sewage pump and 0.2m to 0.3m below the top elevation of the annular water collection tank meets the requirements of one flushing.

[0022] In a preferred embodiment of the utility model, the venting stop valve and the water supply stop valve are hand-operated and electric dual-purpose gate valves, and the flushing control system is a PLC control system.

[0023] In a preferred embodiment of the present utility model, the reflux flushing pipe is arranged below the top plate of the regulating tank body through a double-rod hanger.

[0024] In a preferred embodiment of the utility model, the sewage connection pipe is provided with a sewage stop valve, a sewage check valve and an expansion joint.

[0025] Due to the adoption of the above technical solution, the beneficial effect of the utility model is that the utility model is combined with the emptying and water replenishing functions of the submersible sewage pump, and is suitable for regulating and storing pools that do not have sufficient water storage for flushing due to small rainfall. When the regulating and storing pool is emptied, the submersible sewage pump is used to discharge the regulating and storing water in the pool into the nearby sewage inspection well. When flushing, the water in the annular water collection tank is discharged into the water storage chamber by the submersible sewage pump, and then the flap-type flushing door is opened to complete the flushing action, realizing the function of supplying water to the water storage chamber when the rainfall is small and draining water when emptying. The utility model has the advantages of not needing to introduce an external water source separately for flushing when the rainfall is small, circulating the sludge at the bottom of the pool, effectively utilizing the submersible sewage pump, not adding manual flushing equipment, reducing energy consumption, being economical and effective, and being convenient for daily flushing and maintenance of the regulating and storing pool, and solves the flushing problem of the regulating and storing pool when the rainfall is small and there is not enough water storage. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 It is a schematic diagram of the bottom structure of the utility model.

[0028] Figure 2 yes Figure 1 AA section view.

[0029] Figure 3 yes Figure 2 A partial enlarged schematic diagram of point B. DETAILED DESCRIPTION

[0030] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below with reference to specific illustrations.

[0031] Referring to the attached drawings, a regulating reservoir is shown which utilizes a submersible sewage pump for emptying, replenishing and flushing, including a regulating reservoir body 100, a water inlet pipe 200, a water storage chamber 300, four flap-type flushing doors 400, three submersible sewage pumps 500, a sewage connection pipe 610, a drainage pressure pipe 620, a backflow flushing pipe 630, a three-way joint 640, a drain stop valve 710, a water replenishment stop valve 720, a liquid level sensor 800 and a flushing control system (not shown in the drawings).

[0032] The regulating and storing tank body 100 adopts a circular regulating and storing tank body structure, which adopts a fully underground form or a semi-underground form. A top plate 110 is arranged on the top of the regulating and storing tank body 100, and an annular water collecting trough 120 is formed at the periphery of the bottom thereof, and a pump pit 130 connected to the annular water collecting trough 120 is formed at the side edge of the bottom of the regulating and storing tank body 100. The pump pit 130 is located at the bottom of the regulating and storing tank body 100, which is the lowest point of the entire tank and is used to collect rainwater in the tank. The bottom elevation thereof needs to meet the water pump installation requirements.

[0033] The water inlet pipe 200 is arranged at the upper part of the regulating reservoir body 100, and is mainly used for the initial rainwater inlet during rainfall.

[0034] The water storage chamber 300 is formed at the central position of the bottom of the regulating and storage tank body 100. It is surrounded by a number of circumferentially arranged water storage weir walls 310 and is used to store flushing water. The flushing water level is the same as the height of the water storage weir wall 310. When water is inflowing, the water level in the regulating and storage tank body 100 rises with the increase of rainwater in the initial stage of water inflow. After rising to the height of the water storage weir wall 310, it climbs over the water storage weir wall 310 and enters the water storage chamber 300 to store water; when replenishing water, the reflux flushing pipe 630 above the water storage chamber 300 directly discharges the water in the annular water collection tank 120 into the water storage chamber 300 through the submersible sewage pump 500 as flushing replenishment water. In this embodiment, the water storage weir wall 310 is four pieces, which adopts a reinforced concrete structure. The water storage chamber 300 is a cube structure with a bottom slope of 15% to 25%, which is convenient for the flushing water stored in the water storage chamber 300 to be discharged from the flap-type flushing door 400.

[0035] Four flap-type flushing doors 400 are correspondingly installed in four water storage weir walls 310. The flap-type flushing door 400 is a device installed in a rainwater storage tank to automatically flush the bottom sediment, which usually includes a door panel assembly (including a sealing strip), a frame weldment, a transmission shaft, a proximity switch, and a hydraulic cylinder.

[0036] Four flushing gallery partitions 140 are arranged circumferentially at intervals on the bottom surface of the regulating reservoir body 100. One end of each flushing gallery partition extends to the outer circumference of the water storage chamber 300, and the other end extends to the inner edge of the annular water collecting tank 120. A fan-shaped flushing gallery 150 is formed between two adjacent flushing gallery partitions 140. The four fan-shaped flushing galleries 150 correspond to the four flap-type flushing doors 400. The bottom surface slope of the fan-shaped flushing gallery 150 is 1% to 2%. When flushing water flows and draining the initial rain, the pool water flows into the surrounding annular water collecting tank 120 through the fan-shaped flushing gallery 150.

[0037] Three submersible sewage pumps 500 are arranged at intervals in the pump pit 130 of the regulating reservoir body 100. Of course, the number of submersible sewage pumps 500 is not limited to the number in this embodiment, and it should be set according to the sewage discharge requirements. In this embodiment, the width of the annular sump 120 is 0.5m to 1.5m, and its depth is designed according to the water collection requirements, so that the water volume between the stop water level of the submersible sewage pump 500 and 0.2m to 0.3m below the top elevation of the annular sump 120 meets the requirements of one flushing. The bottom slope of the annular sump 120 is 3% to 5%, which is convenient for the water body to flow to the pump pit 130. 0.2m to 0.3m below the top elevation of the annular sump 120 is an overheight part, which is used to prevent the water level from rising instantly during flushing, causing the fan-shaped flushing corridor 150 to flow back, affecting the flushing water flow and flushing effect.

[0038] One end of the sewage connection pipe 610 is connected to the sewage outlet of each submersible sewage pump 500, and the other end is connected to the liquid inlet of the three-way joint 640. The upper part of the sewage connection pipe 610 is also provided with a sewage stop valve 611, a sewage check valve 612 and an expansion joint 613, which are in a normally open state. The normally open state is mainly used to cut off the water flow and prevent the backflow of pressure water during daily maintenance.

[0039] The drainage pressure pipe 620 is arranged at the upper part of the regulating reservoir 100, one end of which is connected to a liquid outlet of the three-way joint 640, and the other end of which is used to discharge the water into the municipal sewage system. The drainage pressure pipe 620 can be made of a steel pipe or a ductile iron pipe for drainage, and is usually laid underground.

[0040] One end of the backwash pipe 630 is connected to the other liquid outlet of the three-way joint 640, and the other end thereof extends to the top of the water storage chamber 300. The backwash pipe 630 can be made of a steel pipe or a ductile iron pipe for drainage, and is anti-corrosive inside and outside. The backwash pipe 630 is set below the top plate 110 of the regulating reservoir body 100 through a double-rod hanger 640, and its end is connected to the water storage chamber 300, and the bottom of the pipe is higher than the top elevation of the water storage weir wall 310. The double-rod hanger 640 is made of Q235A material, and its installation method and requirements are in accordance with the standard of "Indoor Pipe Brackets and Hangers".

[0041] The vent stop valve 710 is installed on the drainage pressure pipe 620, and is used to control the on and off of the drainage pressure pipe 620. The water supply stop valve 720 is installed on the backflow flushing pipe 630, and is used to control the on and off of the backflow flushing pipe 630. In this embodiment, the vent stop valve 710 and the water supply stop valve 720 are hand-operated dual-purpose gate valves, which have a hand-operated dual-purpose mode and can transmit signals and control opening and closing through a remote PLC control system.

[0042] The liquid level sensor 800 is installed in the regulating reservoir body 100, and is used to collect the water level changes in the regulating reservoir body 100 and the annular water collecting tank 120. In this embodiment, the liquid level sensor 800 is a radar level gauge.

[0043] The flushing control system is respectively connected to each submersible sewage pump 500, each flap-type flushing door 400, the venting stop valve 710, the water replenishment stop valve 720 and the liquid level sensor 800, and is used to control these devices or components to work together to complete the work of draining or replenishing water. In this embodiment, the flushing control system preferably adopts a PLC control system.

[0044] The flushing control system controls the flap-type flushing gate 400, the submersible sewage pump 500, the venting stop valve 710 and the water supply stop valve 720 in conjunction with the liquid level sensor 800. When the regulating reservoir body 100 stores water, the water storage chamber 300 stores water at the same time. At this time, the flap-type flushing gate 400 is in a closed state, and the data monitored on site (water quality, water level, etc.) can be transmitted and analyzed through the flushing control system. When the rainwater regulating reservoir is emptied and the bottom of the reservoir needs to be cleaned, the flap-type flushing gate 400 is controlled to open by the flushing control system. Due to the water pressure, the flap-type flushing gate 400 is opened instantly (the opening value can also be pre-set for the water level. When the water level reaches the set value, the bottom of the reservoir or the downstream main channel is automatically flushed by the flushing control system). All flap-type flushing gates 400 can be opened at the same time to complete the flushing of multiple sectors, or a flap-type flushing gate 400 can be opened separately to flush a fixed sector (with a large amount of sediment) with a large flow rate. When the flushing is completed, the flap-type flushing door 400 returns to the open position and is closed by the oil cylinder, waiting for the next flushing process. When there is less rainfall and the water volume in the water storage chamber is insufficient, resulting in insufficient water for flushing, the flushing control system controls the submersible sewage pump 500 to open, the water replenishment stop valve 720 to open, and the venting stop valve 710 to close, so as to lift the water in the annular water collection tank 120 to the water storage chamber 300 for replenishment.

[0045] The working process of the storage tank for emptying, replenishing and flushing by using a submersible sewage pump is as follows:

[0046] When the regulating reservoir is emptied, the flushing control system controls the venting stop valve 710 to open and the water supply stop valve 720 to close, and uses the submersible sewage pump 500 to lift the initial rainwater to the drainage pressure pipe 620 and discharge it into the municipal sewage system;

[0047] When the regulating reservoir is replenished and flushed, the flushing control system controls the drain stop valve 710 to close and the replenishment stop valve 720 to open, and uses the submersible sewage pump 500 to lift the initial rainwater from the annular sump 120 and discharge it into the water storage chamber 300 through the reflux flushing pipe 630 to replenish water. When the water level reaches the flushing requirement, the flushing control system controls the flap-type flushing door 400 to open and complete the flushing action.

[0048] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A storage tank that uses a submersible sewage pump to empty, replenish and flush, characterized in that: include: A regulating and storing tank body, wherein a top plate is arranged on the top of the regulating and storing tank body, an annular water collecting trough is formed at the periphery of the bottom thereof, and a pump pit connected to the annular water collecting trough is formed at the side edge of the bottom of the regulating and storing tank body; A water inlet pipe, the water inlet pipe is arranged on the upper part of the regulating reservoir body; A water storage chamber is formed at the central position of the bottom of the regulating reservoir body, and the water storage chamber is surrounded by a plurality of circumferentially arranged water storage weir walls; Flush gates of the flap type installed in the wall of each water storage weir; At least one submersible sewage pump disposed in the pump pit of the regulating and storage tank; A sewage connection pipe, a drainage pressure pipe, a reflux flushing pipe and a three-way joint, wherein one end of the sewage connection pipe is respectively connected to the sewage outlet of each submersible sewage pump, and the other end thereof is connected to the liquid inlet of the three-way joint; the drainage pressure pipe is arranged at the upper part of the regulating storage tank body, and one end thereof is connected to a liquid outlet of the three-way joint; one end of the reflux flushing pipe is connected to the other liquid outlet of the three-way joint, and the other end thereof extends to the upper part of the water storage chamber; A vent stop valve and a water supply stop valve installed on the drainage pressure pipe and the reflux flushing pipe; A liquid level sensor installed in the storage tank; as well as A flushing control system is respectively connected with each submersible sewage pump, each flap-type flushing door, a venting stop valve, a water supply stop valve and a liquid level sensor.

2. The storage tank for emptying, replenishing and flushing by using a submersible sewage pump as claimed in claim 1, characterized in that: The regulating reservoir body is a circular regulating reservoir body structure, which is in a fully underground form or a semi-underground form.

3. The storage tank for emptying, replenishing and flushing by using a submersible sewage pump as claimed in claim 1, characterized in that: The water storage weir wall adopts a reinforced concrete structure, and the bottom slope of the water storage chamber is 15% to 25%.

4. The storage tank for emptying, replenishing and flushing by using a submersible sewage pump as claimed in claim 1, characterized in that: A plurality of flushing gallery partition walls are circumferentially arranged on the bottom surface of the regulating tank body, one end of each flushing gallery partition wall extends to the outer circumferential surface of the water storage chamber, and the other end thereof extends to the inner edge of the annular water collecting trough, and a fan-shaped flushing gallery is formed between two adjacent flushing gallery partition walls, and the plurality of fan-shaped flushing galleries are in a one-to-one correspondence with the plurality of flap-type flushing doors.

5. The storage tank for emptying, replenishing and flushing by using a submersible sewage pump as claimed in claim 4, characterized in that: The bottom surface slope of the fan-shaped flushing corridor is 1% to 2%.

6. The storage tank for emptying, replenishing and flushing by using a submersible sewage pump as claimed in claim 1, characterized in that: The width of the annular sump is 0.5m to 1.5m, its depth is designed according to the water collection requirements, and its bottom slope is 3% to 5%, so that the water volume between the stop water level of the submersible sewage pump and 0.2m to 0.3m below the top elevation of the annular sump meets the requirements of one flushing.

7. The storage tank for emptying, replenishing and flushing by using a submersible sewage pump as claimed in claim 1, characterized in that: The venting stop valve and the water supply stop valve are hand-operated and electric-operated dual-purpose gate valves, and the flushing control system is a PLC control system.

8. The storage tank for emptying, replenishing and flushing by using a submersible sewage pump as claimed in claim 1, characterized in that: The reflux flushing pipe is arranged below the top plate of the regulating tank body through a double-rod hanger.

9. The storage tank for emptying, replenishing and flushing by using a submersible sewage pump as claimed in claim 1, characterized in that: The sewage connection pipe is provided with a sewage stop valve, a sewage check valve and a telescopic joint.

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