JP4967022B2 - Waste water treatment equipment for cleaning trucks - Google Patents

Description

  The present invention relates to a vacuum suction vehicle for cleaning a manhole or a sewage pipe. More specifically, the present invention relates to a water reuse sewage treatment apparatus for a cleaning vehicle, which sucks sewage containing sludge from the manhole or sewage pipe, Cleaning that enables water reuse in a manner that collects in the sludge tank, separates the sludge from the collected sewage, filters the sewage and supplies reusable water to the spray pump for cleaning operations The present invention relates to a car water reuse sewage treatment apparatus.

  In general, facilities such as manholes and sewer pipes for electrical or communication facilities require regular cleaning due to corrosion, inflow of foreign matter, and the like. When cleaning a manhole or a sewage pipe, a conventional vacuum suction wheel generally sprays water at a high pressure and sucks sewage together with sludge after cleaning.

  A conventional vacuum suction vehicle has two tanks divided into a water tank containing water sprayed at a high pressure for cleaning sludge and dust and a sludge tank for collecting sludge containing dirt and dust. And a high-pressure pump and nozzle for spraying water from the water tank at high pressure, and a suction pump for sucking sewage containing sludge and dust.

  As mentioned above, when cleaning a manhole or sewage pipe using such a conventional sweeper, the water in the water tank is sprayed through the nozzle by a high pressure pump to perform the cleaning operation, and the sewage remaining after cleaning Is sucked by a suction pump and collected in a sludge tank together with sludge.

  Here, when the sludge tank is filled with sewage, the sewage must be drained from the sludge tank for the next cleaning work, and when the water in the water tank runs out, the water must be refilled to the water tank. Don't be.

  Therefore, the conventional cleaning vehicle has a disadvantage that it takes a long time to carry out the cleaning work because it has to move to another place for discharging or replenishing the sewage during the cleaning work. Since sludge is contained in the sludge tank in a mixed state, further cost is required for the treatment of the mixture, and there is a drawback that the economic efficiency of the conventional cleaning vehicle is impaired.

  The present invention has been made in view of the problems of the prior art, and an object of the present invention is a sewage treatment apparatus for a cleaning vehicle, which separates sludge from sewage generated by cleaning and sucked into the apparatus. To provide a sewage treatment system for a cleaning vehicle that enables efficient reuse of water in a manner that improves cleaning efficiency by filtering sewage and supplying reusable water for cleaning There is.

  Another object of the present invention is a sewage treatment apparatus for a cleaning vehicle, which is separated from a sludge tank disposed at the center of the apparatus, at least one water tank disposed around the sludge tank, The filter tank is equipped with a fiber filter that purifies the sewage filtered by the filter mesh of the sludge tank, and a separate tank containing more efficient sludge separation and allocation of capacity to individual tanks and vehicles An object of the present invention is to provide a sewage treatment apparatus for a cleaning vehicle that enables effective use of the mounting space.

  According to one aspect of the present invention, the above and other objects of the present invention are to clean manholes or sewer pipes by spraying high pressure water from a water tank and drawing sewage and sludge into the sludge tank by vacuum suction. A sewage treatment apparatus for a vacuum suction vehicle for providing a sewage treatment apparatus for filtering dust or foreign matter having a large volume from sewage provided as a partition inside the sludge tank and sucked into the sludge tank through a suction port of the sludge tank. No. 1 filter, a second filter that is disposed at the discharge port of the sludge tank and performs secondary filtration of the sewage that has passed through the first filter, and a second filter for sending the sewage from the sludge tank to the outside through the discharge port. In order to receive the sewage supplied from the sludge tank by the first water pump and the first water pump and separate the sludge from the sewage A filter tank for filtering sewage using the rotary filter unit, a second water pump for feeding the filtered and sludge-free water through the filter tank, and supplying this water to the water tank; This can be achieved by providing a sewage treatment apparatus for a vacuum suction vehicle.

The filter unit is provided outside the filter tank and generates a clockwise or counterclockwise rotational force. The filter unit is provided inside the filter tank and transmits the rotational force of the power generator while processing. A power transmission unit that defines a discharge path for discharging the subsequent water, and a guide for discharging treated water to the outside of the filter tank along the discharge path, connected to the discharge path of the power transmission unit A rotary joint member having a hollow space that is rotated by a rotational force from the power transmission unit and defined inside, and a cylindrical filter cylinder having a plurality of water passage holes formed therein, orienter a connecting cylinder which is connected through a hollow hole of the rotating joint member for guiding the treated water to flow into the discharge path to the discharge path of the power transmission portion from one end of the filter tube And, a filter tube which is closed at the other end, a plurality of fiber holder that is fixed radially to the closed end of the bracket of rotary joint member and the filter tube in one side of the filter tube, the filter a plurality of fiber filters fixedly connected between the both sides of the fiber holder of the cylinder, the rotary joint member on one side, is connected to a rotating shaft of the filter tube in the other side, of the filter tube while maintaining the filter unit It includes a holding frame that keeps rotating, a rotation preventing member provided on the holding frame, and a latch protrusion (holding protrusion) formed on the bracket, and allows rotation in the opposite direction while restricting rotation in one direction. A rotation preventing mechanism.

  Further, the apparatus is defined between the second water pump and the water tank to return reusable water from the second water pump to the filter tank for a predetermined time of initial operation of the filter unit. An on / off valve for opening and closing a reusable water path and a return valve for opening and closing a return path defined between the second water pump and the filter tank may be further provided.

  According to the present invention, a sewage treatment apparatus for a vacuum suction vehicle uses a filter unit and other components to filter sewage collected after cleaning by water spray, thereby reusing sewage as cleaning water. By independently installing at least one water tank, sludge tank and filter tank, efficient use of the vehicle mounting space is achieved, and the water tank and sludge tank can be Capacity is optimized.

It is a figure of the water reuse sewage treatment apparatus of the cleaning vehicle by one Embodiment of this invention. It is a block diagram explaining the structure of the independent tank of the apparatus by this invention. It is a figure explaining the structure of the filter tank and filter unit of the apparatus by this invention. FIG. 3 is a structural diagram of a filter unit of an apparatus according to the present invention. It is a figure of the rotation prevention mechanism of the filter unit by this invention. It is a figure of the water reuse sewage treatment apparatus of the cleaning vehicle by another embodiment of this invention.

  Exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

  FIG. 1 is a diagram of a water reuse sewage treatment apparatus for a cleaning vehicle according to an embodiment of the present invention.

According to the present invention, the sewage treatment apparatus is mounted on a cleaning vehicle in order to perform a cleaning operation by spraying high-pressure water and collect sewage generated by the cleaning operation. This apparatus includes a sludge tank 10 that is evacuated to a vacuum by a vacuum suction device (not shown ) for sucking sewage through a sewage suction hose 11 (11a, 11b) , and for primary filtration of the sewage sucked. A first filter 20 provided as a partition inside the sludge tank 10, a second filter 30 for secondary filtration of sewage filtered by the first filter 20 , and filtration by the second filter 30 The first water pump 40 for sending the treated sewage from the sludge tank 10 to the outside and the sewage sent by the first water pump 40 are filtered using the filter unit 60, and the purified water is recycled. Filter tank 50 supplied as available water, and sludge can be separated from sewage by fiber filter of filter tank 50 , A suction force is generated and applied to the filter unit 60 of the filter tank 50, and the second water pump 70 for sending the purified water and the purified water sent by the second water pump 70 A water tank 80 to be supplied. Water is sprayed from the water tank 80 at high pressure through a high pressure nozzle (not shown) for cleaning. In the device according to the invention, a controller is usually placed in the cab of the vehicle to control motors, valves and other components. Here, the controller monitors the operation of these components in response to signals sent from sensors that detect the operating state of each component, and has the same configuration as the controller of a conventional vacuum suction cleaning vehicle. . The controller has a program connection and a signal connection for controlling the operation. A detailed description of the controller and program is omitted herein.

The sludge tank 10 is a typical sludge tank that can be mounted on a vehicle and configured to collect sewage in a vacuum suction manner. For vacuum suction, the sludge tank 10 has a cylindrical body and a boom arranged at the top of the tank 10 to allow movement of the hatch 10a and suction hose (not shown). 13. The sludge tank 10 is defined by a first suction hose 11a detachably connected to the boom 13 and a second suction hose 11b detachably connected to the valve 12 through the hatch 10a. Has a suction path. In FIG. 1, reference numeral 10 b indicates a vacuum suction connection device connected to a high vacuum device. Here, the sludge tank 10 is the same as or similar to the sludge tank of a conventional cleaning vehicle, and the configurations of the suction hose connection device, hatch, vacuum suction device, nozzle, and the like are well known in the art. Detailed description is omitted in this specification. In the present invention, a first filter 20 is provided as a partition, and a second filter 30 is provided for secondary filtration of the sewage filtered through the first filter 20 in the sludge tank 10. It has the feature of being.

After being filtered by the first and second filters of the sludge tank 10, the sewage is sent to the filter tank 50 through the valve 51 by the first water pump 40. When supplied to the filter tank 50 through the valve 51 by the first water pump 40, the sewage separates the sludge from the sewage and produces reusable water, so that the filter unit 60 inside the filter tank 50 is reusable. The reusable water thus purified and supplied in this manner is supplied to the second water pump 70 through the valve 53 for reuse as cleaning water. Reference numeral 52 indicates a drain valve for discharging the sludge inside the filter tank 50.

  The water tank 80 may comprise only one tank or, as shown in FIG. 2, two separate tanks arranged on both sides of the sludge tank 10 and communicated with each other by a communication pipe (not shown). Tanks 80a and 80b may be provided. The water tank 80 includes a water supply device for supplying water from the outside of the water tank 80, a high-pressure pump for spraying water at a high pressure, a hose equipped with a high-pressure nozzle, and the like. These are not shown in the drawing, but have the same configuration as that of a conventional garbage truck.

  In addition, the apparatus may include a second water pump 70 and a water tank 80 to return reusable water from the second water pump 70 to the filter tank 50 for a predetermined time in the initial stage of the filter unit. And an on / off valve 72 for opening and closing a reusable water path defined between and a return valve 71 for opening and closing a return path defined between the second water pump 70 and the filter tank 50. be able to.

  FIG. 3 is a diagram illustrating the configuration of the filter tank and the filter unit of the device according to the present invention, FIG. 4 is a structural diagram of the filter unit of the device of the present invention, and FIG. 5 is the structure of the filter unit according to the present invention. It is a figure of a rotation prevention mechanism.

  In the filter tank, a hydraulic motor 61 is provided as a power generation unit, a swivel joint 62 having a rotary shaft 62b rotatably inserted into the case 62a is provided as a power transmission unit, and a rotary coupler 62c is provided. , Provided as a rotation connecting member.

Specifically, the filter unit 60 is provided outside the filter tank 50, and has a rotating shaft inserted into the filter tank 50 through the bush to generate a clockwise or counterclockwise rotational force. A hydraulic motor 61 and a rotary shaft 62b having a hollow space connected to the rotary shaft of the hydraulic motor 61 for transmitting the rotational force from the hydraulic motor 61 to the inside of the filter tank 50 and through which purified water passes. The rotary shaft 62b is rotatably inserted into a case (stationary member) 62a having a purified water discharge port, and a rotary joint 62 for transmitting rotational force. A rotary coupler 62c having a hollow space therein and a cylindrical filter cylinder 63 in which a plurality of water passage holes are formed. The connecting cylinder 63a inserted into the hollow space of the rotary coupler is extended from one end of the filter cylinder 63, and the rotation support shaft 63b is extended from the other end. The connecting cylinder 63a is treated water. The rotation support shaft 63b is a closed filter cylinder 63 and a bracket 66d into which the rotation support shaft 63b of the filter cylinder 63 is inserted, and a plurality of latch protrusions 66c are formed on the bracket 66d. A bracket 66d formed circumferentially at a predetermined distance from the center, and a plurality of fiber holders 66a and 66b fixed radially to the rotary coupler 62c and the bracket 66d, respectively, on both sides of the filter cylinder at both ends. Connected to the fiber holders 66a and 66b located by hooks That a plurality of fiber filters 65, connected to the rotational coupler 62c and rotation support shaft 63 b, the holding frame 67 for holding the filter unit while rotatably supporting the rotational coupler 62c and rotation support shaft 63 b, the holding frame 67 In order to enable rotation in only one direction by the action of the bracket 66d and the latch projection 66c, the rotation prevention member 67a is folded by a spring in one direction and the action in the opposite direction is performed. A discharge hose 68 connected to a discharge port formed in the case 62 a of the swivel joint 62 and guiding the processed water to be discharged to the second water pump 70 through the valve 53 outside the filter tank 50. And can be provided. Reference numeral 54 refers to an air safety valve.

  In the cleaning operation by the cleaning vehicle equipped with the sewage treatment apparatus of the present invention, after the water tank 80 (80a, 80b) is filled with water, the cleaning vehicle moves to the target position, and the high-pressure injection device (not shown) To clean the manhole or sewage pipe by spraying high pressure water from the water tank 80 toward the manhole or sewage pipe. During cleaning, the sludge tank 10 can collect high water in the sludge tank 10 by one or both of the suction hose 11a connected to the boom 13 and the suction hose 11b connected to the hatch 10a. It is evacuated to a vacuum state by a vacuum device (not shown).

  After being collected in the sludge tank 10, the sewage is filtered by the first filter 20 that separates the large volume of debris or foreign matter from the sewage and then filtered again by the second filter 30. At this time, by operating the first water pump 40, the sewage filtered by the second filter 30 is supplied from the sludge tank 10 to the filter tank 50 as treated water.

  In the filter tank 50, the treated water is purified by the filter unit 60 to generate reusable water, which is sent to the water tank 80 by the second water pump 70. Here, when the second filter 30 is blocked by sludge and the first water pump 40 cannot send the treated water, the treated water is removed using the first pump 40. By returning to the second filter 30, sludge can be removed from the second filter 30.

  The filter unit 60 of the filter tank 50 uses a hydraulic motor 61 that can rotate clockwise / counterclockwise and can rotate at a lower speed when the filter tank is filled with treated water. To do. The rotational force of the motor 61 is transmitted to rotate the rotary coupler 62c by the rotating shaft 62b of the swivel joint 62 that functions as a power transmission unit.

The fiber holder 66a is fixed to the rotary coupler 62c to hold one side of each fiber filter 65 and is rotated to rotate the fiber filter 65. As the fiber filters 65 rotate, a rotational force is applied from the fiber filters 65 to the fiber holders 66b holding the other side of each fiber filter 65. Therefore, when the latch protrusion 66c of the bracket 66d is subjected to the action applied by the rotation preventing member 67a , the rotation of the fiber filter 65 is limited, and this functions to assist the one-way rotation of the filter unit.

  In other words, the fiber holder 66a on one side is rotated by the clockwise rotation, while the fiber holder 66b on the opposite side is stopped by the restriction of the rotation preventing member. As a result, the fiber filter 65 is tightly twisted. At this time, the hydraulic motor 61 is controlled to generate a rotational force until a predetermined load is applied, and to maintain the predetermined load.

As described above, the second water pump 70 is operated to send the purified water to the filter cylinder 63 while operating the motor 61 to rotate and twist the fiber filter 65. As a result, when the sewage passes through the fiber filter 65 twisted by the rotational force as described above, the sludge is separated from the sewage, and the filtered sewage passes through the water passage holes of the outer cylinder 64 and the filter cylinder 63. When the sludge is further separated from the sewage.

When the second water pump 70 is driven by the fiber filter 65, the outer cylinder 64 and the filter cylinder 63 and is driven to send the purified water, the purified water passes through the connection cylinder 63 a of the filter cylinder 63. The rotary joint 62 is sucked into the rotary shaft 62 b, passes through the rotary shaft 62 b to the drain water hose 68 , and finally passes through the second water pump 70 via the valve 53 and is sent to the outside.

  Here, in an initial stage of operation, a return valve which functions to close the valve 72 disposed between the outlet pipe of the second water pump 70 and the water tank 80 while returning water to the filter tank 50. By opening 71, water is returned to the filter tank 50. That is, in the initial stage, since the water containing sludge is sucked before the fiber filter 65 is twisted to a desired density, the treatment of the second water pump 70 is typically performed for 1 to 2 minutes. The later water is returned to the filter tank 50.

  As described above, in the normal mode after such a return mode, the return valve 71 is closed, while the valve 72 is opened, and the purified water can flow into the water tank 80.

In the process as described above, sewage is collected, filtered and processed through a filter tank or the like, and finally supplied to the water tank 80. Purified water is supplied from the water tank 80 as cleaning water. be able to. Then, if the sludge is trapped between the fibers of the fiber filter 65 and the water is not sucked well, that is, if the second water pump 70 is overloaded with lack of water, the second The water pump 70 is stopped and the motor 61 is driven counterclockwise.

Next, the rotational force of the motor 61 is transmitted to the rotary coupler 62c via the swivel 62, and the rotary coupler 62c is rotated to rotate the fiber holder 66a counterclockwise, thereby the fiber filter 65. Torsion is returned. At this time, since the twist of the fiber filter 65 is returned, the rotational force of the fiber filter 65 in the counterclockwise direction is applied to the fiber holder 66b on the opposite side of the filter cylinder , and the fiber holder 66b engages the latch protrusion 66c with the rotation preventing member 67a. Rotate while sliding along an oblique plane. Specifically, when the fiber holder 66b is rotated counterclockwise, each of the rotation preventing members 67a elastically supported by a spring (not shown) causes the latch protrusion 66c to be connected to each rotation preventing member. It is possible to rotate while sliding along an oblique plane of 67a, and thus the clockwise rotation of the latch projection 66c is restricted, while its counterclockwise rotation is allowed.

  Accordingly, when the fiber filter 65 is rotated by the rotational force of the fiber holder 66a on one side and the twist is returned, the fiber holder 66b on the opposite side is also rotated by the rotational force transmitted to the fiber holder 66b via the fiber filter 65. Thus, the fiber filter 65 is not twisted during counterclockwise rotation.

  In this manner, the sludge trapped between the fibers is separated from the fiber by returning the twist of the fiber filter 65 by counterclockwise rotation. Next, the apparatus is operated in a normal mode after being operated in an initial return mode when the motor is rotated clockwise.

Here, sludge accumulated at the bottom of the filter tank 50 can be removed by opening the drain valve 52. Further, sludge and foreign matter accumulated in the sludge tank 10 can be removed by opening the sludge tank 10 (hatch 10a) and tilting the sludge tank 10.

FIG. 6 shows a sewage treatment apparatus according to another embodiment of the present invention. The apparatus of this embodiment is different from the apparatus of FIG. 1 in that a third filter 45 having a screen filter shape is disposed between the first water pump 40 and the filter tank 50. The other configuration of this embodiment is the same as the configuration of the above embodiment, and the description below is omitted.

  Although the present invention has been described with reference to the embodiments and the accompanying drawings, the present invention is not limited to these embodiments and drawings. It should be understood by those skilled in the art that various modifications and changes can be made without departing from the spirit and scope of the invention as defined by the appended claims.

10 sludge tank, 10a hatch, 10b vacuum suction connection device, 11a first suction hose, 11b second suction hose, 12, 41, 51, 53 valve, 13 boom, 20 first filter, 30 second filter , 40 1st water pump, 45 3rd filter, 50 filter tank, 52 drain valve, 54 air safety valve, 60 filter unit, 61 hydraulic motor, 62 swivel joint, 62a stationary member, 62b rotating shaft, 62c rotating coupler , 63 filter cylinder , 63a connection cylinder, 63b rotation support shaft, 64 outer cylinder , 65 fiber filter, 66a, 66b fiber holder, 66c latch projection, 66d bracket, 67 holding frame, 67a rotation prevention member, 70 second water pump , 71 Return valve, 72 On / off bar Lub, 80, 80a, 80b Water tank.

Claims (4)

A sludge tank 10 evacuated to a vacuum by a vacuum suction device in order to suck sewage through the sewage suction hoses 11a, 11b ;
A first filter 20 provided as a partition inside the sludge tank 10 for primary filtration of the sucked sewage,
A second filter 30 for secondary filtration of sewage filtered by the first filter 20;
A first water pump 40 for sending the sewage filtered by the second filter 30 from the sludge tank 10 to the outside;
A filter tank 50 for filtering sewage sent by the first water pump 40 using a filter unit 60 and supplying purified water as reusable water;
A second water pump 70 for generating suction and applying it to the filter unit 60 of the filter tank 50 so that the sludge can be separated from the sewage by the fiber filter of the filter tank 50;
A water tank 80 to which the purified water sent by the second water pump 70 is supplied;
A sewage treatment apparatus that is mounted on a cleaning vehicle, performs a cleaning operation by spraying high-pressure water from a water tank 80 through a high-pressure nozzle, and collects sewage generated by the cleaning operation,
The filter unit 60 includes:
A hydraulic motor 61 provided outside the filter tank 50 and having a rotating shaft inserted into the filter tank 50 through a bush to generate a clockwise or counterclockwise rotational force;
In order to transmit the rotational force of the hydraulic motor 61 to the inside of the filter tank 50, a rotary shaft 62b connected to the rotary shaft of the hydraulic motor 61 and having a hollow space through which purified water passes is provided. A swivel joint 62 that is rotatably inserted into a stationary member 62a having a water discharge port after purification;
A rotary coupler 62c connected to the rotary shaft 62b of the swivel joint to transmit the rotational force, and having a hollow space formed therein;
A cylindrical filter cylinder 63 in which a plurality of water passage holes are formed, and a connection cylinder 63a inserted into the hollow space of the rotary coupler is extended from one end of the filter cylinder 63, and the rotation support shaft 63b is connected to the other end. A cylindrical filter cylinder 63 in which the connection cylinder 63a can pass treated water and the rotation support shaft 63b is closed;
A bracket 66d into which the rotation support shaft 63b of the filter cylinder 63 is inserted, wherein the plurality of latch protrusions 66c are formed circumferentially at a predetermined distance from the center of the bracket 66d;
A plurality of fiber holders 66a and 66b, respectively, radially fixed to the rotary coupler 62c and the bracket 66d;
A plurality of fiber filters 65 each connected by a hook to fiber holders 66a and 66b, which are located on opposite sides of the filter barrel at both ends;
Is connected to the rotational coupler 62c and rotation support shaft 63 b, the holding frame 67 for holding the filter unit while rotatably supporting the rotational coupler 62c and rotation support shaft 63 b,
In order to allow rotation in only one direction by the action of being fixed to the holding frame 67 and engaging with the latch projection 66c of the bracket 66d, it is folded by a spring in one direction and the action in the opposite direction is performed. a rotation preventing member 67a and dividing,
A discharge hose 68 is connected to a discharge port formed in the stationary member 62a of the swivel joint 62, and guides the discharged water to be discharged to the second water pump 70 via a valve outside the filter tank 50. Equipped with a sewage treatment device.   The apparatus according to claim 1, wherein the water tank (80) comprises two separate water tanks (80a and 80b) arranged on both sides of the sludge tank (10) and connected to each other by connecting pipes. An on / off valve 72 for opening and closing a reusable water path defined between the second water pump 70 and the water tank 80;
A return valve 71 for opening and closing a return path defined between the second water pump 70 and the filter tank 50;
The apparatus according to claim 1, further comprising: returning the treated water from the second water pump to the filter tank. The apparatus of claim 1, further comprising a third filter 45 between the first water pump 40 and the filter tank 50 .

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