JPS6117982B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a sludge treatment vehicle capable of sucking up a mixture of sludge and sewage accumulated in roadside gutters and separating it into sludge and sewage. Conventionally, this type of sludge treatment vehicle uses a vacuum pump to create a low pressure inside the tank mounted on the vehicle body.
Sludge and sewage are sucked into the tank, and then the sludge is allowed to settle naturally within the tank to separate the sludge and sewage. However, with the above structure, the water content in the separated sludge (approximately 40 to 70
%) was very large, and solid matter in the sludge with a light specific gravity was mixed in the separated sewage without settling, making it impossible to reliably separate the sludge and sewage.

In order to solve the above-mentioned drawbacks, the present invention uses a vibration dewatering device to reliably separate the mixture of sludge and sewage into sludge and sewage. , 1 is an airtight storage tank mounted on the front part of the vehicle body 2, and a suction hose 4 of an appropriate length is connected to the top of the storage tank 1, with a suction section 3 at the tip extending to the side ditch of the road. ing.

Reference numeral 7 denotes a vacuum pump that lowers the pressure inside the storage tank 1. By operating the vacuum pump 7, the mixture of sludge and sewage accumulated in the road gutter can be sucked up into the storage tank 1. .

Reference numeral 5 denotes a slurry pump interposed in the middle of a discharge hose 6 connected to the lower part of the storage tank 1. The slurry pump 5 quantitatively pumps the mixture in the storage tank 1 through the discharge hose 6 onto a vibration dewatering device 11, which will be described later. It is now possible to transport it under pressure.

8 is a sewage tank mounted on the middle part of the vehicle body 2. A sludge container 9 is mounted on the rear part of the vehicle body 2 so as to be tilted rearward by a hydraulic cylinder 10, and this container 9 receives sludge separated by a vibration dewatering device 11, which will be described later, from an upper opening. It is designed to be able to accommodate 9
A discharge door 12 that can be opened and closed in conjunction with the dumping operation of the container 9 is attached to the rear opening of the container.

The vibration dehydrator 11 includes a pair of sieve frames 13 and sieve frames 13
It consists of a screen 14 stretched over the bottom of the sieve frame 13 and a vibrator 15 attached to the outer surface of the sieve frame 13, and is attached to the upper part of the sewage tank 8 via a support member 16 such as a spring in the front-rear direction of the sewage tank 8. .

The vibration dewatering device 11 separates the mixture sucked into the storage tank 1 by a screen 14, and the sewage that has passed through the screen 14 is led to the lower sewage tank 8, and the sludge left on the screen 14 is vibrated. The sludge is moved on the screen 14 and guided to the sludge container 9 at the rear.

17 is a water pump installed at the bottom of the sewage tank 8.
A water injection hose 18 is connected to the water pump 17, which extends to the tip of the suction hose 4 and injects the sewage in the sewage tank 8 to the suction section 3 at the tip of the suction hose 4.

Reference numeral 19 denotes an overflow hose that discharges the sewage in the sewage tank 8 into the road gutter when the sewage level in the sewage tank 8 reaches a certain level or higher.

The present invention has the above-described configuration. Next, the operation will be explained. First, when the suction part 3 at the tip of the suction hose 4 is inserted into the road gutter and the vacuum pump 7 is activated, the pressure inside the storage tank 1 becomes low, and the pressure inside the road gutter becomes low. A mixture of sewage and sludge is sucked into a storage tank 1.

The mixture sucked into the storage tank 1 is discharged in a fixed amount by the slurry pump 5 through the discharge hose 6 to the vibration dewatering device 11, and the wastewater in the mixture discharged onto the screen 14 of the vibration dehydration device 11 is discharged onto the screen 14. The sludge that passes through the sewage tank 8 and is stored in the lower sewage tank 8 and remains on the screen 14 is guided rearward by the vibrating action of the vibrator 15,
It is discharged into a container 9 mounted at the rear. By continuously performing the above operations, it is possible to continuously separate sewage and sludge, and the sewage can be separately stored in the sewage tank 8 and the sludge in the container 9.

After the work is completed, the sewage in the sewage tank 8 is discharged into the road gutter through a drain hose (not shown), and sludge with a very low moisture content (approximately 10 to 30%) is stored in the container 9 at a high density. The sludge can then be transported to a disposal site, where the sludge can be discharged and disposed of by dumping the container 9.

In addition, the sewage stored in the sewage tank 8 is transferred to the water pump 1.
7, the suction hose 4 is passed through the water injection hose 18.
If it is injected into the suction part 3 at the tip, it is possible to break up solid matter such as earth and sand in the sludge, and it is possible to increase the suction effect.

As described above, the present invention can reliably separate sewage and sludge, so the water content in the sludge becomes extremely small, and a large amount of sludge can be stored in a small container at high density. Since the storage tank has a smaller volume compared to conventional tanks, it takes less time to bring the pressure inside the tank to a low level, allowing for quick collection work, and it also takes less time than conventional natural sedimentation separation. Since wastewater and sludge can be separated, treatment efficiency is also greatly improved.

In addition, since the mixture in the storage tank can be supplied to the vibration dewatering device in a fixed amount, the amount of the mixture released will not exceed the processing capacity of the vibration dewatering device, thereby ensuring that sewage and sludge are separated. be able to.

[Brief explanation of the drawing]

FIG. 1 is an overall front view of the present invention, and FIG. 2 is a plan view. 1 is a storage tank, 2 is a vehicle body, 4 is a suction hose, 6 is a discharge hose, 7 is a vacuum pump, 8 is a sewage tank, 9 is a sludge container, and 11 is a vibration dewatering device.

Claims (1)

[Claims] 1 A storage tank that uses a vacuum pump to lower the internal pressure to suck up a mixture of sludge and sewage, a slurry pump that pumps out the mixture in the storage tank in a fixed amount, and a slurry pump that separates the mixture pumped into sludge and sewage. A sludge treatment vehicle equipped with a vibration dewatering device, a sewage tank and a sludge container for storing sludge and sewage separated by the vibration dewatering device, respectively, on the vehicle body.