JPS62176699A - Sludge dehydrating device - Google Patents

Abstract

PURPOSE:To adequately adjust the number of shearing times coping with the nature of sludge and to improve the dehydration efficiency by composing the shearing dehydrating part by a sun roller and the planet roller giving a shearing power with its outer contact with the sun roller. CONSTITUTION:The sludge is subjected to a pressure dehydration by a pressure roller part by being pinched between both filter cloth 3, 4 with its deflection by being transferred with being subjected to a gravity dehydration by being fed to a filter cloth belt 3. This sludge receive a shearing force by traveling the outside of plural planet rollers 14 by reaching to the shearing dehydrating part with being pinched by the filter cloth 3, 4. In this case the driving of the revolution speed V1 of the planet roller 14 being differed from the traveling speed of the polymer filter cloth 3, 4 is enabled by rotating the supporting member 17 by the motor. The effective hyhydration is therefore performed by increasing and decreasing the shearing times by the roller 14 with the movement of the contact part of the roller 14 and belt 3, 4 by the relative speed caused by the difference in the revolution speed V1 of the planet roller 14 and the traveling speed V2 of the belt 3, 4.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an apparatus for continuously dewatering sludge generated in the treatment of water, sewage, industrial wastewater, and other water.

[Conventional technology]

There are many types of dewatering apparatuses in which an endless filter cloth heddle is movably hung over a plurality of roller groups in a face-to-face polymerized state, and sludge is pressurized and dewatered while being held between these filter cloth belts. Among such dewatering devices, a shearing dewatering section is provided with a plurality of shearing rollers following the pressurizing dewatering section, and the shearing rollers apply shearing force to the sludge that has been pressurized and dehydrated between the filter cloth belts. A device that performs shear dewatering with improved dehydration effects is attracting attention.

[Problem that the invention seeks to solve]

However, the number of times of shearing in such a shearing dewatering section is determined by the number of shearing rollers, and depending on the properties of the sludge, the expected dewatering is not always carried out in many cases.

The present invention improves the shearing dewatering section of the sludge dewatering device, and makes it possible to adjust the number of times of shearing by the shearing roller as appropriate so as to perform accurate dewatering according to the properties of the sludge, thereby improving sludge dewatering efficiency. It is an attempt to do so.

[Means for solving problems]

In the present invention, an endless filter cloth belt is movably hung around a plurality of roller groups in a face-to-face polymerized state, and the sludge is compressed between these filter cloth healds while applying shearing force by a plurality of shearing rollers. In a sludge dewatering apparatus in which a shear dewatering section for performing shear dewatering is disposed at 01, the shearing dewatering section consists of a sun roller and a planetary roller that circumscribes the sun roller and applies the shearing force, and that revolves around the planetary roller. This is a sludge dewatering device that is characterized by the fact that it has been made possible.

〔Example〕

An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an explanatory diagram of the overall configuration, and shows an endless filter cloth belt 3 provided with a sludge l supply section 2, and a sludge l supply section 2. An endless filter cloth belt 4 that does not receive any windings is parallel to a drive roller 6.6 and a plurality of roller groups 7.7, which are connected to a drive device 5 and rotate at the same speed, in a face-to-face overlapping state. It is mounted so that it can be driven.

In addition, opposing pressure rollers 8, 8, . A shear dewatering section S consisting of a plurality of planetary rollers 14 is provided,
The polymerized filter cloth healds 3 and 4 run suspended over this shearing and dewatering section S, and then pass through a squeezing roller 9, and then the filter cloth healds 3 and 4
is dissolved, and the dehydrated cake IO is peeled and transferred to conveyor 11.
It is designed to fall upwards.

In the figure, 12. '12 indicates a cleaning device for each filter cloth heald 3, 4.

Furthermore, as shown in FIGS. 2 and 3, the structure of the shear dewatering section S includes a sun roller 13 and a plurality of planetary rollers 14 circumscribing the sun roller 13. Both ends of the rotating shaft 150 of the sun roller 13 The sun roller 13 and the i1M roller 14 are both rotatably supported by a circular support member 17 having a gear formed on its outer periphery, and the outer gear portion of the support member 17 is not shown. It is meshed with a pinion gear 20 rotated by a chain wheel 18 connected to a variable speed motor via a chain 19. That is, the support member 17 is rotated by the variable speed motor via the chain wheel 18 and the pinion gear 20, and as the support member 17 rotates, the planetary roller 14
The sun roller 13 revolves around the sun roller 13.

The sludge 1 to be dewatered is supplied from the supply section 2 onto the filter cloth heald 3 running, is transported while being dehydrated by gravity, and is turned and polymerized face-to-face with the filter cloth belt 4, so that the sludge 1 is transferred to both filters. While being held between the cloth belts 3 and 4, it reaches the pressure roller 8 section and is dehydrated under pressure.

Next, this pressurized and dehydrated lη mud reaches the shear dewatering section S while being held between the filter cloth belts 3.4, runs outside of the plurality of planetary rollers 14 while being under tension, and sequentially passes through the planetary rollers 1.
At this time, by rotating the support member 17 with a motor, the polymerized filter cloth heald 3.4 is subjected to a shearing force due to the rotation speed 1 of the planetary roller 14 shown in FIG.
Driving speed different from 2 is possible. Therefore, the contact portion between the A-leg roller 14 and the polymerized filter cloth heald 3.4 moves by the relative speed caused by the difference between the revolution speed (1) of the 't1ffi roller 14 and the running speed (2) of the polymerized filter cloth belt 3.4. However, efficient dewatering is performed by increasing or decreasing the number of times of shearing by the planetary rollers 14.

The sludge that has undergone pressure dewatering and shear dewatering in this way is
The filter cloth is then compressed by a pressing roller 9 and then transferred to the filter cloth heald 3.
4 is separated, and the dehydrated cake 10 peels off and falls and is conveyed by the conveyor 11.

Although the shearing and dewatering section S is arranged at one location in the illustrated example, it can also be arranged at multiple locations along the travel path of the polymerized filter fabric belt 3.4.

Further, in the above embodiment, the planetary roller 14 is replaced by the sun roller 13.
Although this was done by driving the support member 17 to revolve around the sun roller 13, the sun roller 13 is driven to rotate, and in conjunction with this rotation, the planetary roller 14 is rotated together with the support member 17.
It is also possible to perform a revolution.

〔Effect of the invention〕

As described above, according to the present invention, the number of times of shearing in the shearing dewatering section can be adjusted without being limited by the number of shearing rollers, so that the dewatering efficiency can always be improved in accordance with the properties of the sludge. It is something that can be done.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which Fig. 1 is an explanatory view of the overall configuration, Fig. 2 is a partially cutaway front view of the shear dewatering section, Fig. 3 is a cross-sectional view taken along the line -1 in Fig. 2, and Fig. 4 The figure is an explanatory diagram of the action of the shear dewatering section. DESCRIPTION OF SYMBOLS 1... Sludge, 2... Supply part, 3.4... Filter cloth belt, 5... Drive device, 6... Drive roller, 7...
Roller group, 8...pressure roller, 9...pressure roller,
10... Dehydrated cake, 11... Conveyor, 12...
- Cleaning device, 13... Sun roller, 14... Planetary roller, 16... Frame, 17... Support member, 18
... Chain wheel, 19... Chain, 20... Pinion gear, S... Shear dewatering section. Patent applicant: Ebara Infilco Co., Ltd. Representative Patent Attorney Masayuki Takagi Representative Patent Attorney Yori 1)
Takatsugu Part Figure 2 Procedural Amendment Sheet February 1, 1988 Director-General of the Eikoh Agency Black 1) Indication of Akio Tono Incident 1986 Patent Application No. 30835
Title of invention No. 8 Relationship to the case of person who corrects mud skin dehydration equipment Patent applicant

Claims (1)

[Claims] (1) An endless filter cloth belt is movably hung over a group of rollers in a face-to-face polymerized state, and the sludge is held between these filter cloth belts and sheared while applying shearing force using a plurality of shearing rollers. In a sludge dewatering device equipped with a shear dewatering section that performs dewatering, the shear dewatering section comprises a sun roller and a planetary roller that circumscribes the sun roller and applies the shearing force, and the planetary roller is made to be able to revolve. A sludge dewatering device characterized by: