A scum removal system for a surge tank

Abstract

The utility model relates to a kind of scum removal systems of regulating and storing pond, including the traction cable (1) being set on regulating and storing pond, transmission wheel (2), intercepting net (3) and scum basket (4);The regulating and storing area of regulating and storing pond is respectively equipped with a traction cable (1) in left and right sides, and traction cable (1) is around set on multiple transmission wheel (2) arranged in up-down front-back;The intercepting net (3) is set between the two traction cables (1) of regulating and storing area left and right sides and is connected with traction cable (1);The scum basket (4) is set in the rear side of traction cable (1). Compared with prior art, the utility model has the advantages that the scum of regulating and storing pond can be removed timely and efficiently.

Description

Technical Field

[0001] This utility model relates to the field of operation and maintenance technology of rainwater storage tanks, and in particular to a scum removal system for storage tanks. Background Technology

[0002] Against the backdrop of the current vigorous promotion of sponge city construction, rainwater storage ponds are being built across the country to retain and store rainwater. As rainwater source storage structures, these ponds store large amounts of initial rainwater during the storage process. During this process, a large amount of lightweight pollutants (such as leaves, grease, hair, paper products, and plastic bags) float to the surface of the pond and cannot be discharged during the rainwater release phase. After the rainwater is released, these pollutants settle at the bottom of the pond. With each storage cycle, the silt at the bottom of the pond accumulates deeper and deeper. Besides occupying storage capacity, the high content of pollutants such as leaves and animal fats in the scum, along with the large amount of organic pollutants in the silt, can produce toxic and explosive gases such as hydrogen sulfide and methane, posing a significant safety hazard. Meanwhile, the rainwater harvesting system is a gravity-based system, and the rainwater storage tank, as the end point of the system, is typically a fully underground, sealed tank buried deep underground. Silt is difficult to remove using conventional dredging equipment. If manual dredging is used, in addition to the enormous manpower required, the sealed environment and toxic gases pose a significant threat to worker safety. Furthermore, hair and plastic bags contained in the scum can easily become entangled in the pump impeller, reducing pump efficiency or even causing damage, affecting the normal operation of the storage tank and increasing the workload of manual maintenance.

[0003] Therefore, there is an urgent need to develop a system that can remove scum from stormwater storage tanks in a timely and efficient manner. This system can remove most of the scum from the tanks after each rainfall event, thus ensuring the long-term, safe, and efficient operation and maintenance of stormwater storage tanks. Utility Model Content

[0004] The purpose of this invention is to provide a scum removal system for regulating storage tanks, which can remove scum from regulating storage tanks in a timely and efficient manner.

[0005] The purpose of this utility model can be achieved through the following technical solution: a scum removal system for a regulating tank, comprising a traction cable, a drive wheel, an interception net, and a scum basket installed on the regulating tank;

[0006] The storage tank has a traction cable on each of the left and right sides of the storage area, and the traction cable is wound around multiple transmission wheels arranged vertically and horizontally.

[0007] The interception net is set between the two traction cables on the left and right sides of the storage area and is connected to the traction cables.

[0008] The scum basket is located on the rear side of the traction cable.

[0009] Preferably, the traction cable is wound around four drive wheels arranged vertically and horizontally (i.e., including four drive wheels located at the front upper, rear upper, front lower, and rear lower respectively) to form a ring transmission structure.

[0010] More preferably, the maximum distance between the drive wheel located at the front upper part and the drive wheel located at the rear upper part does not exceed the length of the interception net.

[0011] More preferably, the axes of each transmission wheel are horizontal and parallel to each other.

[0012] More preferably, the drive wheel located at the upper front and the drive wheel located at the upper rear are at the same height.

[0013] More preferably, the drive wheel located at the upper rear is positioned further back than the drive wheel located at the lower rear.

[0014] More preferably, the scum basket is located below the rear upper drive wheel and outside the area enclosed by the traction cables on both sides.

[0015] Preferably, the length and width of the interception net are not less than the length and width of the scum area to be removed in the storage area.

[0016] Preferably, the length of the interception net does not exceed half the length of the traction cable.

[0017] Preferably, the width of the interception net does not exceed the distance between the two traction cables on the left and right sides.

[0018] Preferably, the interception net has perforations with a diameter of 2-5mm.

[0019] Preferably, the scum basket is located below the drive wheel at the rear and upper position.

[0020] Preferably, the scum basket is located outside the area enclosed by the two traction cables.

[0021] Preferably, the bottom of the scum basket is hollowed out and fitted with pulleys, and a lifting ring is installed on the rear side.

[0022] More preferably, the scum basket is arranged on a scum basket placement platform, and an inclined surface is provided on the upper rear side of the scum basket placement platform for cooperating with the bottom pulley of the scum basket to guide the placement of the scum basket.

[0023] More preferably, the diameter of the perforated hole at the bottom of the scum basket is 2-5 mm.

[0024] Preferably, flushing nozzles are provided within the area surrounded by traction cables on both the left and right sides of the storage area.

[0025] More preferably, the flushing nozzle is positioned toward the scum basket.

[0026] Preferably, the transmission wheel is connected to a rotary motor for driving its rotation.

[0027] More preferably, the rotating motor is located at the top of the storage tank.

[0028] More preferably, the rotating motor is connected to the transmission wheel via a chain.

[0029] More preferably, the rotating motor is connected to a drive wheel located at the front and upper part.

[0030] More preferably, the rotating motor is connected to a control assembly.

[0031] More preferably, the control component can start the rotating motor to unfold the intercepting net above the upper drive wheel when the liquid level in the storage area reaches the storage level, can start the rotating motor to move the intercepting net to the scum basket to discharge scum when the liquid level in the storage area reaches the venting level, and can reset the intercepting net to the front side of the storage area after the scum discharge is completed.

[0032] More preferably, the control component includes a PLC controller.

[0033] More preferably, the control component is connected to the flushing nozzle.

[0034] More preferably, the control component is connected to a liquid level sensor, which is located within the storage area and is used to detect the liquid level height within the storage area.

[0035] Preferably, the upper drive wheel is installed at a height 1-1.5m below the storage tank level, and the lower drive wheel is installed at a height 1-1.5m above the bottom of the storage tank.

[0036] Preferably, the storage tank includes multiple parallel storage zones, with a lifting and cleaning platform at the rear of each storage zone.

[0037] Compared with the prior art, the present invention has the following beneficial effects:

[0038] 1. This utility model, through the coordinated arrangement of traction cable, transmission wheel, interception net and scum basket, can remove scum from the stormwater storage tank in a timely and efficient manner. After each rainfall storage, most of the scum in the storage tank can be removed in time, thereby achieving long-term, safe and efficient operation and maintenance conditions for the stormwater storage tank.

[0039] 2. This utility model has a simple structure, stable and reliable operation, and can intercept scum in the storage tank over a wide area;

[0040] 3. When the interception net of this utility model is retracted, it does not affect the rainwater entering the storage tank. When it is unfolded, it can intercept scum and can also be used with scum baskets and flushing nozzles to clean scum.

[0041] 4. This utility model, through the coordinated design of control components, liquid level sensors, rotating motors, and flushing nozzles, can automatically, promptly, and efficiently remove scum from regulating tanks, reducing labor costs and maintenance workload.

[0042] 5. By placing the rotating motor on the top of the storage tank, this utility model can save the space occupied by the system in the storage tank, and also avoid damage to the rotating motor caused by floating scum, thereby improving the safety, reliability and service life of the system. Attached Figure Description

[0043] Figure 1 This is a top plan view of the scum removal system for the regulating reservoir of this utility model;

[0044] Figure 2 This is a lower plan view of the scum removal system for the regulating reservoir of this utility model;

[0045] Figure 3 This is a flowchart illustrating the scum interception process of the scum removal system for regulating storage tanks according to this utility model.

[0046] In the diagram: 1-traction cable, 2-drive wheel, 3-interception net, 4-scum basket, 5-flushing nozzle, 6-rotating motor. Detailed Implementation

[0047] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. This embodiment is based on the technical solution of the present invention and provides detailed implementation methods and specific operating procedures; however, the scope of protection of the present invention is not limited to the following embodiments.

[0048] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0049] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0050] Example 1

[0051] A scum removal system for a storage tank includes a traction cable 1, a drive wheel 2, an interception net 3, and a scum basket 4 installed on the storage tank.

[0052] The storage tank contains multiple parallel storage zones. Each storage zone has a traction cable 1 on its left and right sides. The traction cable 1 is wound around four transmission wheels 2 arranged vertically and horizontally, forming a ring transmission structure.

[0053] The interception net 3 is set between the two traction cables 1 on the left and right sides of the storage area and connected to the traction cables 1. Its length is less than that of the traction cables 1, and it can rotate in a circle along the area enclosed by the traction cables 1 under the drive of the traction cables 1.

[0054] The scum basket 4 is located behind the traction cable 1 and outside the area enclosed by the traction cable 1.

[0055] When the intercepting net 3 rotates to the front of the area surrounded by the traction cable 1, the intercepting net 3 is in a retracted state, which does not affect the rainwater entering the storage tank. When the intercepting net 3 rotates to the top of the area surrounded by the traction cable 1, the intercepting net 3 is in an extended state, which can intercept scum when the storage tank releases water. When the intercepting net 3 rotates to the scum basket 4 at the rear of the area surrounded by the traction cable 1, the scum can fall into the scum basket 4.

[0056] Example 2

[0057] A scum removal system for a storage tank also includes a flushing nozzle 5 and a rotating motor 6.

[0058] The rotating motor 6 is located at the top of the storage tank and is connected to the transmission wheel 2 located at the front and top through a transmission component. It provides power to the transmission wheel 2, thereby driving the traction cable 1 and the interception net 3 to rotate.

[0059] The flushing nozzle 5 is positioned within the area enclosed by the traction cable 1 and faces the scum basket 4. The scum basket 4 is located below the drive wheel 2 at the rear and upper position, which facilitates the intercepted scum outside the interception net 3 to fall downward into the scum basket 4 under the action of high pressure water and gravity.

[0060] The scum basket 4 is located on the lifting and cleaning platform behind the storage area. When the scum basket 4 needs to be cleaned, it can be lifted out by the lifting device, manually cleaned, and then lifted back into the storage tank.

[0061] The rest is the same as in Example 1.

[0062] Example 3

[0063] A scum removal system for a storage tank includes a rotating motor 6; a transmission wheel 2; a traction cable (traction cable 1); an interception net 3 (with a pore size of 2-5 mm); a scum basket 4 (with a pore size of 2-5 mm); and a flushing nozzle 5.

[0064] like Figure 1 As shown, a rotating motor 6 is installed on top of the rainwater storage tank, as... Figures 2-3 As shown, a drive wheel 2, a traction steel cable, an interception net 3, a flushing nozzle 5, and a scum basket 4 are installed inside the regulating tank.

[0065] The interception net 3 is installed on two sets of traction steel cables on both sides. Each set of traction steel cables is fixed to four drive wheels 2, two on the top and two on the bottom. The upper drive wheel 2 is installed 1-1.5m below the highest regulating liquid level, and the lower drive wheel 2 is installed 1-1.5m above the bottom of the regulating tank. The above forms a scum interception system. The rotating motor 6 at the top of the tank is connected to one of the drive wheels 2 through a chain. The rotating motor 6 provides power to the drive wheel 2. The interception net 3 rotates through the traction steel cables and the rotating wheels 2.

[0066] At the end of the storage tank, within the area enclosed by drive wheel 2, the position is as follows: Figure 3 As shown, flushing nozzles 5 are set up. After the interception net 3 completes the interception of scum and rotates to the end of the regulating tank, the flushing nozzles 5 are activated and spray high-pressure water to wash the scum off the interception net 3. Under the action of high-pressure water and gravity, the scum on the interception net 3 falls downward into the scum basket 4.

[0067] 5. The bottom of the scum basket 4 is hollowed out (with a gap of 2-5mm), and a pulley is installed at the bottom. A lifting ring is installed on the side near the storage tank.

[0068] Operating conditions:

[0069] 1. When rainwater enters the storage tank, scum floats on the surface and gradually rises with the tank level. During this stage, the scum removal system is not activated, and the interception net 3 remains in its initial position. Figure 3 (Top right)

[0070] 2. After the liquid level reaches the storage level (maximum water level), the rotating motor 6 at the top of the tank starts, driving the transmission wheel 2 to rotate. The traction cable is pulled by the four transmission wheels 2 and begins to rotate around the four transmission wheels 2. The interception net 3 is deployed from one side of the storage tank along with the traction cable. Figure 3 (Right center) When the interception net 3 is fully deployed (covering the two upper drive wheels 2), the scum removal system stops working.

[0071] 3. After the rainfall ends, the storage tank begins to empty. At this time, the interception net 3 is in a fully deployed planar state, and the water level gradually decreases. When the water level is lower than the interception net 3, scum larger than the gaps in the interception net 3 will be trapped by the interception net 3. Figure 3 (Bottom right) The scum interception system does not work until the water level in the regulating reservoir is 1m below the bottom of the reservoir.

[0072] 4. When the water level is 1m below the bottom of the storage tank, the rotating motor 6 at the top of the tank starts, driving the transmission wheel 2 to rotate (always in the same direction). The traction cable is pulled by the four transmission wheels 2 and begins to rotate around them. The intercepting net 3 moves to the other side of the storage tank along with the traction cable. At the same time, the flushing nozzle 5 starts. As the intercepting net 3 rotates and passes through the flushing nozzle 5, it is flushed by high-pressure water from the inside out. The intercepted scum on the outside falls into the scum basket 4 under the action of high-pressure water and gravity. Figure 3 (Lower left). After the entire interceptor net 3 has passed through the flushing nozzle 5, the flushing nozzle 5 stops working. The rotating motor 6 continues to rotate until the interceptor net 3 returns to its initial position.

[0073] 5. The scum basket 4 is lifted out of the regulating tank using a lifting device. Figure 3 After manual cleaning of the scum (left to middle), it is then hoisted into the regulating tank. The scum basket 4 is then returned to its initial position via the bottom pulleys and the inclined surface of the scum basket placement platform. Figure 3 (Top left)

[0074] 6. The initial scum interception in the regulating reservoir is completed.

[0075] The above description of the embodiments is provided to enable those skilled in the art to understand and use the utility model. It will be apparent to those skilled in the art that various modifications can be easily made to these embodiments, and the general principles described herein can be applied to other embodiments without inventive effort. Therefore, the present utility model is not limited to the above embodiments, and any improvements and modifications made by those skilled in the art based on the disclosure of the present utility model without departing from its scope should be within the protection scope of the present utility model.

Claims

1. A scum removal system for a regulating reservoir, characterized in that, It includes a traction cable (1), a drive wheel (2), an interception net (3), and a scum basket (4) installed on the storage tank; The storage tank has a traction cable (1) on each of the left and right sides of the storage area. The traction cable (1) is wound around multiple transmission wheels (2) arranged vertically and horizontally. The interception net (3) is set between the two traction cables (1) on the left and right sides of the storage area and connected to the traction cables (1); The scum basket (4) is located on the rear side of the traction cable (1).

2. The scum removal system for a regulating reservoir according to claim 1, characterized in that, The traction cable (1) is wound around four transmission wheels (2) arranged vertically and horizontally to form a ring transmission structure.

3. The scum removal system for a regulating reservoir according to claim 2, characterized in that, The furthest distance between the drive wheel (2) located at the front and the drive wheel (2) located at the rear does not exceed the length of the interception net (3).

4. The scum removal system for a regulating reservoir according to claim 1, characterized in that, The length and width of the interception net (3) are not less than the length and width of the scum area to be removed in the storage area.

5. The scum removal system for regulating storage tanks according to claim 1, characterized in that, The scum basket (4) is located below the drive wheel (2) at the rear and upper position; The bottom of the scum basket (4) is hollowed out and fitted with pulleys, and a lifting ring is installed on the rear side.

6. The scum removal system for a regulating reservoir according to claim 1, characterized in that, The storage area is surrounded by traction cables (1) on both sides, and flushing nozzles (5) facing the scum basket (4) are provided.

7. The scum removal system for a regulating reservoir according to claim 1, characterized in that, The transmission wheel (2) is connected to a rotary motor (6) for driving its rotation; The rotating motor (6) is located at the top of the storage tank; The rotating motor (6) is connected to the transmission wheel (2) located at the front and top.

8. The scum removal system for a regulating reservoir according to claim 7, characterized in that, The rotating motor (6) is connected to a control component that can start the rotating motor (6) to deploy the intercepting net (3) when the liquid level in the storage area reaches the storage level, can start the rotating motor (6) to move the intercepting net (3) to the scum basket (4) to discharge scum when the liquid level in the storage area reaches the venting level, and can reset the intercepting net (3) after the scum discharge is completed.

9. The scum removal system for a regulating reservoir according to claim 1, characterized in that, The installation height of the upper drive wheel (2) is 1-1.5m below the storage liquid level, and the installation height of the lower drive wheel (2) is 1-1.5m above the bottom of the storage tank.

10. The scum removal system for a regulating reservoir according to claim 1, characterized in that, The storage tank includes multiple parallel storage zones, with a lifting and cleaning platform at the rear of each storage zone.

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