KR101202195B1 - Sludge tanks for gutter dredging vehicle having a filtering function using the buoyancy - Google Patents

Abstract

PURPOSE: A sludge tank for a dredging vehicle with a filtering function using buoyancy is provided to prevent environmental contamination by maximizing filtering effects. CONSTITUTION: A sludge tank(A) for a dredging vehicle with a filtering function using buoyancy comprises a main body(1), a floating body(2), and a filter(3). The main body has an inner space(1a) for temporarily storing a specific amount of sewage. The floating body automatically floats on the sewage stored in the main body. The filter floats on the sewage with the floating body and filters foreign materials and sludge from the sewage.

Description

SLUDGE TANKS FOR GUTTER DREDGING VEHICLE HAVING A FILTERING FUNCTION USING THE BUOYANCY}

The present invention relates to a sludge tank for a sewer dredging vehicle, and more particularly, buoyancy to filter and drain only the sewage of the upper layer having the lowest sludge concentration among sewage stored temporarily as a sludge tank for sewer dredging. The present invention relates to a sludge tank for a sewer dredging vehicle having a filtration function.

Before and after the Seoul Olympics in 1988, we have been carrying out the sewage treatment facility construction project and sewage pipe maintenance project, including the Han River Integrated Development Project. Will not.

On the one hand, sewage pipes are designed and installed in the infrastructure such as houses and roads to ensure the proper flow rate of sewage, but excavation depth is also used. In the stagnant section of the flow velocity due to the increase, sludge generated in the sewage treatment process along with concrete decay and various dirt coming off the inner wall of the pipeline is gradually sedimented over time. It blocks the sewer pipes and obstructs the flow of fluid.

Moreover, in the case of sediment reduction of sewage pipes due to sediments, sewage flows out of pipe joints or gaps due to the pressure rise in the pipes, or overflows from the earthenware to public waters during rainfall, as well as polluting rainwater. It acts as a source of odors in manholes, which can give citizens great discomfort and distrust in sewerage.

In order to solve this problem to some extent, through the domestic registered patent No. 10-0674138, the sludge is separated from the recovered sewage, filtered and then supplied to the cleaning water spray pump to reuse the water of the manhole cleaning car to be reused as washing water Sewage treatment apparatus has been disclosed.

1 is a system diagram of a sewage treatment apparatus mounted in a sewer dredging vehicle, the conventional sewage treatment apparatus is a sludge tank 910 to receive the sewage through the suction hose 911 by making a vacuum inside the vacuum suction device; )Wow; A primary filtration filter 920 configured to first filter wastewater in a state in which the sludge tank 910 is installed as a partition wall; A secondary filtration filter 930 for further filtering filthy water filtered through the primary filtration filter 920; A first pump pump 940 pumping the sewage filtered by the secondary filtration filter 930 to the outside of the sludge tank 910; A filter tank (950) for finally filtering the sewage pumped by the first pump (940) using a fiber filter (951); A second pump pump (960) for pumping the sewage into the fiber filter (951) and pumping the filtered sewage (hereinafter referred to as "filtration water"); And a washing water tank 970 for storing the filtered water pumped by the second pump pump 960 as recycled washing water.

According to the sewage treatment apparatus for water reuse of a manhole cleaning vehicle according to the prior art, the inside of the sewer pipe and the manhole (h) is cleaned through high-pressure injection of the washing water pre-filled in the washing water tank 970 at the work site.

At this time, the internal space of the sludge tank 910 is made into a vacuum state by using a vacuum device (not shown), to a portion of the hatch door 910-1 for opening and closing the rear end of the sludge tank 910. Forced recovery of sewage may be achieved through the penetrating suction hose 911.

Therefore, the filthy water stored in the sludge tank 910 is first filtered by the primary filtration filter 920, and various foreign substances and sludge having large particles are filtered first, and then, the secondary filtration filter 930. Is further filtered out.

Then, by driving the first pump pump 940, the sewage of fresh water in the sludge tank 910 passing through the secondary filtration filter 930 is supplied to the filter tank 950, the fiber The final filter is filtered by the filter 951, and is stored as the wash water tank 970 through the second pump 960, and is recycled as wash water for washing the sewer (and manhole).

However, since the first and second filtration filters 920 and 930 each simply partition the internal space of the sludge tank 910 and are simply fixed to the tip of the drain pipe, the water level and the depth of the sewage. Regardless of water, only the purpose of filtration to filter out impurities is carried out.

As a result, the lower layer of sewage close to the sludge accumulated on the inner bottom of the sludge tank 910 due to the force of gravity, the filtration effect by the first and second filtration filters 920, 930 is very minimal, and the sludge tank ( Excessive sludge content (concentration) of the freshwater contained in the 910 leads to a decrease in filtration power, which eventually leads to different ends of different filtration effects each time a sewage dredging operation is performed using the conventional sewage treatment apparatus. .

In addition, even if the filtration process using the filter tank 950, there is no limit to completely filtering the sludge contained in the sewage, so if the sludge is not completely filtered, it is recycled as washing water for cleaning the sewer and manhole It has been pointed out as an inadequate problem below.

An object of the present invention is to solve the above problems, by linking to the upper part of the filtration filter that can achieve a flotation action corresponding to the change in the fresh water of the sewage is forced into the sludge tank and stored. The present invention provides a sludge tank for a dredging dredging vehicle having a buoyancy filtration function to effectively filter only sewage of the upper layer having a low sludge concentration as the filtration filter maintains a submerged state close to the water by the floating body.

The present invention to achieve the above object,
A main body capable of temporarily storing a predetermined amount of sewage, a floating body provided inside the main body and automatically floating in response to a change in the fresh water amount of the sewage stored and sucked into the main body, and further coupled to the lower side of the floating body. A sewage tank for a dredging dredging vehicle having a buoyancy filtration function comprising a filtration filter for simultaneously lifting up and down along a floating body and maintaining a submersible state close to the surface of the sewage, while filtering foreign substances and sludge from the sewage;
The filtration filter,
A parallelepiped or cylindrical structure with a mesh or net that is easy to filter foreign matter and sludge from sewage,
The discharge pipe for draining the filtered sewage to the outside of the main body is connected to one end, the sludge tank for sewer dredging vehicle having a filtration function using a buoyancy, characterized in that the flexible pipe is possible to extend the length corresponding to the lifting trajectory of the filtration filter. .

In addition, the inside of the main body, the lifting guide for raising and lowering the filtration filter is characterized in that it is further provided.

In addition, the floating body is characterized in that the air or a gas lighter than the air is injected to the buoyancy to be floating in the middle or the surface of the liquid.

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In addition, the elevating guide is characterized in that it is combined with a hook which protrudes from the inner wall surface of the main body and one side of the filtration filter, and a wire rope connecting the hooks.

In addition, the elevating guider is characterized in that it is combined with the rail provided in the upward direction from the bottom surface inside the main body, and a rotating roll that can ride up and down the rail in a state assembled to one side of the filter filter.

As can be clearly seen from the above description, the sludge tank for sewer dredging vehicles having a filtration function using buoyancy of the present invention excludes sewage filtration of the lower layer adjacent to the sludge accumulated on the bottom of the sludge tank, and only the sewage of the upper layer with low sludge concentration is low. As it can be filtered, most of the sludge is filtered only by the filtration filter provided in the sludge tank, so that it can be recycled as an optimal washing water for cleaning the sewers and manholes as clean water that is completely purified during further filtration. Will be exercised.

In addition, according to the increase in the filtration effect described above, due to the inclusion of sewage in the process of waterproofing for recycling into the wash water brings about the effect that can be inherently blocked the cause of environmental pollution.

In addition, by maximizing the filtration capacity by filtering only the sewage of the upper layer with low sludge concentration by the floating body, it is possible to omit multiple filter structures such as the existing primary and secondary filtration filters and to apply the corresponding after dredging. It is a very useful invention that can simplify filter cleaning while maximizing the reduction of equipment manufacturing cost and maintenance cost by achieving simplified device configuration.

1 is a system diagram of a sewage treatment apparatus mounted on a sewer dredging vehicle.
Figure 2 is a main sectional view showing the internal structure of the sludge tank for sewer dredging vehicle having a filtration function using buoyancy according to the present invention.
Figure 3 is a sectional view showing the main relationship between the filtration filter and the lifting guider in the sludge tank for sewer dredging vehicle having a filtration function using buoyancy according to the present invention.
4 is an exemplary view illustrating a process of forcibly suctioning sewage using a sewer dredging vehicle equipped with a sludge tank according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings such that those skilled in the art may easily implement the present invention.

2 is a sectional view showing the internal structure of the sludge tank for sewer dredging vehicle having a filtration function using buoyancy according to the present invention, Figure 3 is a sludge tank for sewer dredging vehicle having a filtration function using buoyancy according to the present invention. Fig. 4 is a schematic sectional view showing the relationship between the filtration filter and the elevating guider, and FIG. 4 is an exemplary view illustrating a process of forcibly suctioning sewage using a sewer dredging vehicle equipped with a sludge tank according to the present invention.

As shown in FIG. 2, the sludge tank A for sewer dredging vehicle having a filtration function using buoyancy according to the present invention includes a main body 1 capable of temporarily storing a predetermined amount of sewage, and stored into the main body 1. In response to the change in the freshwater amount of sewage is automatically buoyant floating body (2), and filtration filter capable of simultaneously lifting and descending along the floating body (2) to filter foreign matter and sludge while maintaining a submerged state close to the surface of the sewage ( 3) consists of.

The main body 1 is for initial suction and preferential filtration of sewage during dredging of sewers or manholes, and includes an internal space 1a for sewage storage, and various foreign substances deposited on the bottom surface of the internal space 1a. And the hatch door 11 for opening and closing one end opening for the purpose of sludge discharge is hinged.

In the lower portion of the hatch door 11, it is preferable that the additional suction pipe 12 is further penetrated insert coupled to the forced suction of the sewage into the inner space (1a).

On the other hand, the suction pipe 12, the hatch door 11 in order to allow the various foreign matter and sludge introduced into the main body 1 with the sewage to quickly settle to the bottom surface of the interior space (1a). The penetrating insert is inserted into the vertical structure from the lower side of the lower part, and the sewage is dropped and stored as the tip portion forms a downward curved curve.

The floating body 2 is for keeping the filtration filter 3 always in a submerged state close to the surface of the sewage which is sucked and stored into the main body 1, and is buoyant to float in the middle or surface of the liquid. Air bladder is preferably injected with air or a gas (nitrogen or helium) that is lighter than air, but styrofoam having excellent flotation ability may be used.

The filtration filter 3 is for first filtering various foreign matters and sludges from the wastewater temporarily stored in the internal space 1a, and is easily meshed or meshed to filter foreign matters and sludges from the wastewater. It is preferable that this formed parallelepiped or cylindrical structure.

In addition, one end of the filtration filter 3 is further connected to the discharge pipe 31 having the purpose of draining the filtered sewage to the outside of the main body 1, and the opposite end of the filtration filter 3 is connected to one end of the main body 1. It is provided to penetrate the lower part of the tip.

In addition, the discharge pipe 31 is preferably a flexible pipe (flexible pipe) that can be made elastically elongated in accordance with the track during the lifting action of the filter (3).

On the other hand, Figure 3 is a sectional view showing the main relationship between the filtration filter and the lift guider in the sludge tank for sewer dredging vehicle having a filtration function using buoyancy according to the present invention, as shown in Figure 3, the filtration filter (3) It may further include a lift guider (4) for the control of the rise and fall of).

This is to prevent the lifting operation of the filtration filter 3 is not smooth due to the interference by the discharge pipe 31, for this purpose, the lifting guide 4 is, the inside of the main body (1) It is preferable to combine the hooks 41 protruding from one side of the wall surface and the filtration filter 3, and wire ropes 42 connected to the hooks 41, respectively.

In addition, unlike the hook 41 and the wire rope 42, a combination of pulleys and wires, or a rail provided in the main body 1 in the upward direction, and a rotating roll up and down the rails are described above. It may be configured as a combination coupled to one side of the filtration filter (3).

Referring to the action of the sludge tank (A) for sewer dredging vehicle having a filtration function using the buoyancy according to the present invention having the above configuration as follows.

First, the dredging vehicle equipped with the sludge tank (A) according to the present invention is moved to the work site, and the washing water tank 970 is pre-filled with the washing water before, as shown in Figure 4, the washing water tank The dredging operation of the sewer or manhole (h) is started by cleaning the sewer or the manhole (h) by high pressure spraying the washing water stored in 970.

At the same time, the internal space 1a of the main body 1 is made in a vacuum state, so that forced suction of sewage through the suction pipe 12 inserted into the hatch door 11 is performed. Here, a separate suction hose 911 having a predetermined length at the tip of the suction pipe 12 is further connected and then introduced into the sewer or the manhole (h), and the sewer pipe together with the sewage inside the sewer or the manhole (h). In addition to the foreign matter deposited inside, it is possible to inhale the sludge (s).

Subsequently, the sewage forcedly sucked into the main body 1 and temporarily stored through the suction pipe 12 is first filtered by the above-described filtration filter 2 so that foreign particles and sludge s having relatively large particles are filtered out.

Here, in accordance with the change in the fresh water (storage amount) of the sewage temporarily stored into the main body 1, the floating body (2) has an automatic flotation action that rises above the water surface. At this time, as shown in Figure 2, the filtration filter (3) integrally coupled to the lower side of the body (2) at the same time to raise the filtration of sewage in the state of maintaining the underwater submerged state near the surface of the sewage at all times. Will be.

That is, as described above, the filtration filter 3 maintains the submerged state of the water close to the surface of the sewage, so that the sewage of the lower layer adjacent to the bottom surface of the main body 1 in which the sludge s is precipitated by gravity. It is possible to filter out only the sewage of the upper layer except the sludge (s) concentration is very low, as well as the filtration filter (3) alone can exhibit a filtering effect that can filter out most of the sludge (s) contained in the sewage. have.

On the other hand, when the water level of the sewage in the main body 1 is changed as the sewage first filtered by the discharge pipe 31 is discharged to the outside of the main body 1, the filtration filter along with the floating body 2 correspondingly lowered. (3) will also fall simultaneously.

At this time, as shown in Figure 3, the discharge pipe 31 associated with one side of the filter filter 3 is reduced in length corresponding to the downward movement trajectory of the filter filter 3, the lifting guider (4) By forming a uniform lift trajectory.

Finally, the filthy water which has undergone the first filtration process by the filtration filter 3 is drained to the outside of the sludge tank A of the present invention through the discharge pipe 31 and then by the first pump pump 940. The filter tank 950 is further subjected to further filtration, and the treated water (filtered sewage) that is completely filtered through this process is described above for recycling as wash water by the second pump pump 960. It is stored inside the wash water tank 970.

As a result, the concentration of the sludge (s) while maintaining the submerged state at all times in the underwater position close to the surface of the sewage due to the floating body (2) that performs the automatic flotation action in response to the change of the fresh water of the sewage By only filtering the sewage of the lowest upper layer, it is possible to maximize the filtration effect using the sludge tank without having to provide a plurality of filtration filters inside the sludge tank as in the conventional, and to simplify the filtration step as much as possible.

As described above, the present invention has been described in detail by using a preferred embodiment, but the scope of the present invention is not limited to the specific embodiment, it should be interpreted by the appended claims. In addition, those of ordinary skill in the art that various modifications can be made without departing from the scope and spirit of the present invention.

A: sludge tank, 1: main body, 1a: internal space
2: floating body 3: filtration filter 4: lifting guide
11: hatch door, 12: suction pipe, 31: discharge pipe

Claims (6)

A main body capable of temporarily storing a predetermined amount of sewage, a floating body provided inside the main body and automatically floating in response to a change in the fresh water amount of the sewage stored and sucked into the main body, and further coupled to the lower side of the floating body. A sewage tank for a dredging dredging vehicle having a buoyancy filtration function comprising a filtration filter for simultaneously lifting up and down along a floating body and maintaining a submersible state close to the surface of the sewage, while filtering foreign substances and sludge from the sewage;
The filtration filter,
A parallelepiped or cylindrical structure with a mesh or net that is easy to filter foreign matter and sludge from sewage,
The discharge pipe for draining the filtered sewage to the outside of the main body is connected to one end, the sludge tank for sewer dredging vehicle having a filtration function using a buoyancy, characterized in that the flexible pipe is possible to extend the length corresponding to the lifting trajectory of the filtration filter. .
The method of claim 1,
The inside of the main body, the sludge tank for sewer dredging vehicle having a filtration function using buoyancy, characterized in that the lifting guider for controlling the rise and fall of the filter filter is further provided.
The method of claim 1,
The float is a sludge tank for a dredging dredging vehicle having a buoyancy filtration function, characterized in that the buoy is buoyant buoyancy is injected into the air or lighter than air to float on the surface or the liquid received buoyancy.
delete The method of claim 2,
The elevating guider, hooks protruding from the inner wall surface of the main body and one side of the filtration filter,
Sludge tank for dredging dredging vehicle having a filtration function using buoyancy, characterized in that the hook is connected to the wire rope connected.
The method of claim 2,
The lifting guider, the rail provided in the upward direction from the bottom surface inside the main body,
Sludge tank for dredging dredging vehicle having a filtration function using buoyancy, characterized in that it is combined with a rotating roll that can be up and down the rail in the assembled state provided on one side of the filtration filter.

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