JP3122884B2 - Mobile sludge dewatering vehicle and dewatering machine for mobile sludge dewatering vehicle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a mobile sludge dewatering vehicle for dewatering sludge by circulating through small-scale sewage treatment facilities, sewage treatment facilities and the like which are dispersed.

[Conventional technology]

Recently, the sewerage business has been spreading from large cities to small and medium-sized cities, and agricultural, mountainous and fishing villages, and sewage treatment facilities and the like that are more suitable for downsizing are required. However, in small-scale facilities, the amount of generated sludge is small, so providing sludge dewatering equipment for each treatment facility will result in low operating rates, excessive equipment, and high construction and maintenance costs. . Therefore, it is conceivable to treat sludge in one place, but the problem of disposal of dewatered cake up to other facilities and the effect of filtrate on small-scale treatment facilities cannot be ignored. From the emotional point of view, bringing sludge from other districts and treating them will have challenges.

Therefore, a method of performing sludge treatment in each area by patrol processing of a mobile sludge dewatering vehicle has been considered. That is, conventionally, there is one disclosed in JP-A-58-164843. Japanese Patent Application Laid-Open No. Sho 58-164843 uses a belt press type dewatering machine in which two endless filter cloths are stretched between rolls and pressurized and dewatered, and can be operated with a normal license. This is a system that can be mounted on a tonnage wheel and obtains power by rotating a hydraulic pump using a vehicle engine as a drive source. In addition, there are mobile sludge dewatering vehicles equipped with a centrifugal dewatering type, vacuum dewatering type, etc., but all of them require a large license because the dewatering machine is large and heavy.

[Problems to be solved by the invention]

By the way, even in the conventional moving sludge dewatering vehicle disclosed in Japanese Patent Application Laid-Open No. 58-164843, the center of gravity of the vehicle is increased because a number of roll shafts are mounted on the vehicle. When the belt press type dewatering machine is reduced in weight while the running stability of the belt press type dewatering machine is reduced, there is a problem that the width of the filter cloth is necessarily reduced and the dewatering ability is reduced.

Therefore, the present applicant has conventionally manufactured and sold a multi-disc dehydrator, and has devised to manufacture a mobile sludge dehydrator by adding ancillary equipment around the multi-disc dehydrator. That is, an object of the present invention is to provide a mobile sludge dewatering vehicle that can be operated with a normal license, can drive a generator and supply power, does not decrease the dewatering ability, and has good running stability of the vehicle. And

[Means for solving the problem]

In order to solve the above-mentioned problem, in the present invention, a filter driving motor and a reducer are provided laterally to the side thereof, and the washing water unit is made independent to lower the center of gravity, and the material of the filter is reduced. A mobile sludge dewatering vehicle with a total weight of less than 8 tons equipped with a multi-disc dewatering machine that was partially made of resin, the wall structure of the casing was reduced, and the mount was reduced in size, was mounted. The vehicles were special vehicles under the Road Traffic Law. Also,
The filtrate collecting section was provided on both sides of the dehydrator as the multiple disc dehydrator.

[Action]

As a multi-disc type dehydrator, a filter driving motor and a reducer are set laterally on its side, and the washing water unit is made independent to lower the center of gravity, and the filter material is partially resinified,
In addition, if the casing is formed into a wall structure and the weight of the frame is reduced by reducing the size of the mount, a compact dehydrator can be obtained. It can be a sludge dewatering vehicle. In addition, if the vehicle is a special vehicle under the Road Traffic Law, the procedure can be easily performed with the equipment installed even when the vehicle inspection is updated. Further, if the filtrate collecting portions are provided on both side surfaces of the dehydrator as the multiple disc type dehydrator, water from the washing nozzle passes through the filter to further prevent clogging of the filter. be able to. If a multi-disc dehydrator driven by electric power and ancillary equipment thereof and a generator for supplying electric power to the multi-disc dehydrator and the ancillary equipment are mounted, power borrowing and power The connection work becomes unnecessary, and the dehydration processing can be performed without depending on the engine mounted on the vehicle. If the generator is driven by the engine of the vehicle,
It can be an economical mobile sludge dewatering vehicle.

〔Example〕

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

1 and 2 are a plan view and a front view, respectively, showing a mobile sludge dewatering vehicle A according to a first embodiment of the present invention.

As shown in FIGS. 1 and 2, a mobile sludge dewatering vehicle A according to the present embodiment includes a multi-disc dehydrator 1, a generator 2, a control panel 3, a sludge pump 4, a chemical dissolution tank 5, a chemical Injection pump 6
And the like are loaded on a vehicle having a gross weight of less than 8 tons (4-ton vehicle), so that the vehicle can be driven with a normal automobile license.

Further, the generator 2 is mounted on the mobile sludge dewatering vehicle A, and is used as a power source for supplying electric power to each device. Therefore, it is not necessary to borrow the power supply on site or connect the power supply, and work can be performed even in a place where the power supply capacity is small or there is no power supply.

Next, the multi-disc dehydrator 1 of the first embodiment will be described.

3 and 4 show the appearance. As shown in FIGS. 5 and 6, the multi-disc dehydrator 1 includes a control panel 3 in which an aggregating unit 11, a dehydrating unit 12, a filter washing unit 13, a driving unit 14, and an electric circuit are incorporated. It is configured. The aggregating unit 11
As shown in the figure, a stirrer blade 11b is provided in a prismatic tank 11a, and sludge and a flocculant are supplied to upper inlets 11c and 11d, respectively.
From the lower part, enters the tank 11a at the lower part, is stirred and becomes a flocculated floc, and overflows from the outlet 11e at the upper part of the tank 11a.
It is sent out to the dehydration unit 12. In addition, 11f is a motor for stirring, 11g is a lid for inspection, and 11h is a cleaning port. The dehydration unit
As shown in FIG. 5 and FIG.
Many 12b… are installed up and down. The filter is composed of a large disk 12a ', a small disk 12 "and a shaft 12a, as shown in FIG. 10, and as shown in FIGS. 8 and 9, the large disk 12a'
a ′ and the small disk 12a ″ are arranged opposite to each other, and a slit S is formed between the adjacent large disks 12a ′.
When the filter disks 12a and 12b are rotated at a low speed, the sludge is dewatered by the slits S and the outlet 12 is rotated.
It is transported to the c side. The filtrate passing through the slit S is
The liquid flows through the filtrate holes 12d of the filter discs 12a and 12b, flows into the filtrate collecting part 16 on the side surface of the dewatering part 12, and flows out of the dehydrator.
Further, as shown in FIGS. 11 and 12, the large disc 12a 'is rotated while biting into the slit S of the filtration surface, so that the slit S is continuously washed, and the new filtration surface is constantly cleaned. Reproduce. The sludge conveyed to the outlet 12c side has a compression force generated when the distance between the upper and lower filter discs 12a and 12b becomes smaller toward the outlet 12c side, and a rotation speed of the inlet side filter body, The dehydration filtration is promoted by the compression force generated by rotating faster than the rotation speed of the outlet-side filter. The dewatered sludge is carried out on the chute as dewatered sludge (cake) from the dewatering section outlet 12c. Although there is no clogging on the filtration surface due to the structure of the filter, the filtrate hole 12d may be blocked by a suspended solid component flowing out into the filtrate. For this reason, a filter washing nozzle 13e is provided for each filter as a filter washing unit 13, and the filtrate hole 12d is washed once every two to three hours by the timer and the washing pump 13a, and the dehydrator 1 is stopped. Instead, it is automatically performed during the operation of the dehydrator 1.

The filter drive unit 14 has a gantry 17 provided below the dewatering unit 12, and an inlet-side filter drive reducer 18 and an outlet-side filter drive reducer 19 are arranged in a space inside the gantry 17. In addition, each deceleration record 18,1
9 has a motor. And the respective reducers 18,19
As shown in FIGS. 13 and 14, the drive sprocket 21 of the drive shaft 20 provided on the side of the dewatering unit 12 is rotated via a sprocket and a chain, and two filter bodies are attached to a spur gear 20a of the drive shaft 20. A large number of two filter shafts 22, 23 are rotated with respect to one drive shaft 20 via the spur gears 22a, 23a. Incidentally, reference numeral 24 denotes a transmission for driving the inlet side filter, 25 denotes a converter for driving the outlet side filter, and 13b denotes a filter body washing water tank.

 Next, a second embodiment will be described.

FIGS. 15 and 16 are a plan view and a front view showing a mobile sludge dewatering vehicle B according to a second embodiment of the present invention.

As shown in FIGS. 15 and 16, the mobile sludge dewatering vehicle B of the present embodiment has a lighter weight and lower center of gravity than the mobile sludge dewatering vehicle A of the first embodiment. That is, the generator 32, the control panel 33, the sludge pump 34,
By loading the chemical dissolving tank 35, the chemical injection pump 36, etc. on a vehicle with a total weight of less than 8 tons (4-ton vehicle), it can be operated with a normal car license and the weight of the equipment such as the dehydrator 31 is reduced. It can be registered as a special vehicle (8 numbers) with a lower center of gravity and a set of equipment such as a generator 32. Therefore, even when the vehicle inspection is updated, the procedure can be easily performed with the equipment mounted.

Of course, the generator 32 is mounted on the dehydration vehicle B, and the generator 32 is driven by the engine of the vehicle to serve as a power source for supplying electric power to each device.

Next, an improvement of the multi-disc dehydrator 31 of the second embodiment will be described.

In the dehydrator 31 according to the second embodiment, the reduction devices 18 and 19 for driving the filter, which are located below the dehydrator 12 in the dehydrator 1 according to the first embodiment, are arranged as 38 and 39 beside the dehydrator 31, respectively. At the same time, the height of the dehydrator 31 was reduced by making the washing water unit 40 independent, and the center of gravity was reduced and the weight was planarly dispersed. (17th
(See FIG. 22 to FIG. 22.) In addition, while the filter material of the dehydrator 31 is being made of resin, the mount 41 of the dehydrator 31 is reduced in size, and
The weight of the model of the first embodiment was reduced by about 1 ton by partially changing the frame structure such as a wall structure. Further, by providing the filtrate collecting portions 16a and 16b on both side surfaces of the dehydrating portion 12, the washing effect of the filter body by the penetration of the filtrate and the washing water is measured, and the characteristic of the mobile sludge dewatering vehicle B is improved. The filter clogging is prevented when dealing with various types of sludge. (See FIG. 21) On the other hand, the following was performed as the resinification of the filter body. Paying attention to the fact that the small disk 42 of the filter is a component that does not cause wear and sliding, a disk made of resin (wear and corrosion resistance) was used. In addition, while reducing the dewatering load due to sludge applied to the filter disk of the first embodiment,
In order to improve the uniform dispersion effect of the sludge, a resin middle disk 43 having a thickness of about 10 mm was inserted at regular intervals into a normal filter disk. (Refer to FIGS. 23 to 26.) Other characteristics of the mobile sludge dewatering vehicle B are as follows.

-The mobile sludge dewatering vehicle was equipped with a lifting / lowering device 51 of a sludge supply pump 34, and the sludge supply pump 34 was made portable by a cart 52. (See Fig. 27) The sludge supply pump 34 is a
At the end of the loading platform to facilitate loading and unloading.

・ Sludge supply pump 34 is self-priming, and suction and pressure feeding are performed by hoses, which simplifies on-site installation and connection work. Even when dehydration truck B cannot enter near the sludge supply source The workability was improved so that dehydration work could be performed.

-The chemical dissolution tank 35 has a two-tank structure, in which the supply of the chemical and the dissolution of the chemical are alternately performed so as to have a supply capacity for the time required for the chemical dissolution. The chemical injection pump 36 is of a double-head type, and has two chemical liquid inlets in the flocculation tank 11, so that the two liquids can be injected by simple valve operation as required, such as the properties of sludge. (See FIG. 28 and FIG. 29) Next, the operation of the sludge treatment will be described with reference to FIG. After arriving at the site, the sludge supply pump 34 is lowered, moved to the vicinity of the stock solution supply location by the carriage 52 attached to the sludge supply pump 34, the suction hose is moved into the stock solution supply location, and the discharge hose is moved. Connect to supply port. Next, the water supply hose is connected to the local water supply source and the water supply port of the mobile sludge dewatering vehicle B, and the drainage hose is connected to the local drainage place and the water discharge port of the mobile sludge dewatering vehicle B. Thereafter, when the generator 32 is driven by the engine of the mobile sludge dewatering vehicle B and power is supplied to each device, the operation can be started from the chemical dissolution operation. That is, in the chemical dissolution tank 35, a suitable polymer coagulant is usually 0.1 to
Dissolve to about 0.2%. Next, the amount of sludge and the amount of chemical injection are determined according to the properties of the sludge. The injection amount of the chemical into the coagulation tank 11 is adjusted by a variable capacity type chemical injection pump 36, and the amount of sludge is adjusted by a variable capacity type sludge supply pump 34.
The chemical solution and the sludge flowing into the flocculation tank 11 are agitated to form flocs, overflow, and enter the sludge dewatering section. The floc is sent to the outlet side while being filtered by the filter. The filtrate is collected in a filtrate collecting section and drained as drain. The dewatered cake coming out of the outlet is discharged through the cake conveyor 53.

In addition, 54 is a washing water tank, 55 is a washing water pump, 56 is a sludge storage tank, and 57 is an on-site water treatment facility. The portion surrounded by the dashed line is the mobile sludge dewatering vehicle B.

The mobile sludge turbine B is composed of a dehydrator (a dehydrator, a drive unit, a coagulation tank, an inlet / outlet filter unit, a washing water unit, etc.), a generator, a chemical dissolution tank, and other heavy equipment on the dehydrator truck. The weight of the mobile sludge dewatering vehicle B is balanced, and the front and rear tire loads are averaged.

As described above, in this embodiment, the width of the filter (corresponding to the width of the filter cloth of the belt press type dewatering machine) is 1 m by setting the dewatering device mounted on the mobile sludge dewatering vehicle to the multi-circle type dewatering device 31. Model can be lightweight and low center of gravity.
Registration as a specially equipped vehicle is now possible. Sludge dewatering vehicle A,
The multi-disc dehydrator 1, 31 mounted on B is a very low-speed, quiet rotational movement of the filter (1 rpm or less) in a sealed dehydrator.
Vibrating, generating noise, odor,
It is suitable for outdoor dewatering work performed by mobile sludge dewatering vehicles A and B, without sludge scattering.

The multi-disc dehydrator with reduced weight and lower center of gravity and the auxiliary equipment of the second embodiment are each unitized and mounted on a vehicle having a total weight of less than 8 tons, and dewatering is carried out without specially equipped vehicles. Needless to say, it can be a car.

〔The invention's effect〕

As described above, according to the present invention, the following effects can be obtained.

(A) As a multi-disc type dehydrator, a motor for driving the filter and a speed reducer are provided beside the filter, and the washing water unit is made independent to lower the center of gravity, and a part of the filter material is used. If it is made into resin, and the casing is made into a wall structure, and the weight is reduced by reducing the frame, a compact dehydrator can be obtained.
A mobile sludge dewatering vehicle with excellent running stability can be provided.

(B) If the vehicle is a special vehicle under the Road Traffic Law, 8
Because registration is possible as a number, the procedure can be easily performed with the equipment installed even when updating the vehicle inspection.

(C) Further, in the multi-disc dehydrator, if the filtrate water collecting portions are provided on both side surfaces of the dehydrator, the effect of washing the filter by the penetration of the filtrate and the washing water can be improved. In addition, it is possible to prevent clogging of the filter when handling various types of sludge, which is peculiar to a mobile sludge dewatering vehicle.

In small and medium-sized urban areas, there are many cases where a house is adjacent to a treatment facility. In this case, when dehydration treatment is performed for a long time, idling of the vehicle must be avoided as much as possible from the viewpoint of noise problems. Especially when the engine mounted on the vehicle is a diesel engine, the idling noise is high and the NOx value of the exhaust gas is high, and there are many areas where the restriction on idling of truck vehicles is strengthened. Therefore,
If a configuration is provided in which a multi-disc dehydrator driven by electric power and ancillary equipment thereof and a generator for supplying electric power to the multi-disc dehydrator and the ancillary equipment are mounted, for example, driving of this generator By separately installing a small gasoline prime mover in the cargo bed as a source, it becomes possible to deal with the noise and exhaust gas problems. Therefore, it is not necessary to borrow the power supply and connect the power supply on site, and the dehydration can be performed without depending on the engine mounted on the vehicle.
A mobile sludge dewatering vehicle with excellent environmental performance is realized. In addition, when the vehicle engine is a low-noise gasoline engine that complies with the emission regulations or when the dehydration processing time is short, the generator is driven by the vehicle engine, which is economical. Mobile sludge dewatering vehicle.

[Brief description of the drawings]

1 is a plan view showing a mobile sludge dewatering vehicle according to a first embodiment of the present invention, FIG. 2 is a front view thereof, FIG. 3 is a plan view of a multi-disc dehydrator of the first embodiment, FIG. The figure is the same as the front view.
The figure is a front view showing the structure of the multi-disc dehydrator of the first embodiment, FIG. 6 is a sectional view taken along the line VI-VI of FIG. 5, and FIG. 7 is a perspective view showing the structure of the coagulation tank. FIG. 8 is an explanatory view showing a large disk of a filter, FIG. 9 is an explanatory view showing a small disk of a filter, FIG.
FIG. 11 is an explanatory view showing the assembled state of the filter body, FIG. 11 is a plan view showing the engaged state of the filter body, FIG.
FIG. 14 is a front view showing a power transmission structure to a filter, FIG. 14 is a side sectional view of the same, FIG. 15 is a plan view showing a mobile sludge dewatering vehicle of a second embodiment, FIG. The figure is a plan view of the multi-disc dehydrator of the second embodiment, FIG. 18 is a side view thereof, FIG. 19 is a rear view thereof, and FIG. 20 is a structure of the multi-disc dehydrator of the second embodiment. FIG. 21 is a sectional view taken along the line XX of FIG. 20, FIG. 22 is an explanatory view showing the power transmission structure of the second embodiment, and FIG. Illustration, No.
FIG. 24 is an explanatory view of a small disk of the filter body, FIG. 25 is an explanatory view of a middle disk of the filter body, FIG. 26 is an explanatory view showing an assembled state of the filter body, FIG.
FIG. 28 is a plan view showing the meshing state of the filter bodies, FIG. 28 is a front view showing a sludge supply pump, FIG. 29 is a front view showing a chemical liquid injection pump, and FIG. 30 is a flow sheet showing the use situation of a mobile sludge dewatering vehicle. It is. A, B ... mobile sludge dewatering vehicle 1 ... multiple disc type dehydrator, 2 ... generator 3 ... control panel 4, ... sludge pump 5 ... chemical dissolution tank, 6 ... chemical injection pump 11 ... ... Coagulation unit, 12 ... Dehydration unit 13 ... Filter washing unit, 14 ... Drive unit 12a, 12b ... Filter disc 12d ... Filtration hole 12c ... Exit 13e ... Filter washing nozzle 16 ... … Filtrate collecting unit 18… Inlet side filter drive reducer 19… Outlet filter drive reducer 20… Drive shaft, 22, 23… Filter shaft 31… Multi-disc dehydrator 32 … Generator, 33… Control panel 34… Sludge pump, 35… Chemical dissolution tank 36… Chemical injection pump 38… Inlet side filter drive reducer 39… Outlet filter drive reducer 43… … Medium disk, 55… Wash water pump

Continuation of front page (56) References JP-A-60-41599 (JP, A) JP-A-54-10271 (JP, A) JP-A-63-133308 (JP, U) (58) Fields investigated (Int) .Cl. ⁷ , DB name) E03F 7/10 C02F 11/00-11/20

Claims (4)

(57) [Claims] 1. A filter driving motor and a speed reducer are provided laterally on the side thereof, the washing water unit is made independent to lower the center of gravity, the filter material is partially made of resin, and the casing is formed. A mobile sludge dewatering vehicle with a total weight of less than 8 tons, which is equipped with a multi-disc dehydrator having a wall structure and reduced weight by reducing a frame. 2. The mobile sludge dewatering vehicle according to claim 1, wherein the vehicle is a special vehicle according to the Road Traffic Law. 3. A dehydrator for a mobile sludge dewatering vehicle, comprising the multi-disc dehydrator according to claim 1. 4. The multi-disc dehydrator according to claim 3, wherein the filtrate collecting portions are provided on both side surfaces of the dehydrator.
A dewatering machine for a mobile sludge dewatering vehicle according to the item.