JPH043748Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a belt press type filtration device used for dehydration and filtration of muddy water, various waste liquids, etc.

BACKGROUND TECHNOLOGY A belt press type filtration device generally consists of at least two endless filter cloths running opposite each other with a predetermined distance between them, and the liquid to be treated is directly applied to the gap between the opposing endless filter cloths. is supplied and squeezed between both filter cloths to perform filtration.

Problems to be solved by the invention As mentioned above, in the conventional belt press type filtration device, the liquid to be treated is directly compressed and filtered between a pair of endless filter cloths that run opposite each other. Since the filter cloth is easily clogged, it is necessary to constantly wash it with high-pressure water, etc., which makes the equipment complicated and requires treatment of the washing water.
In addition, it is necessary to select a filter cloth depending on the properties such as the particle size of the liquid to be treated, but some types of filter cloth may not be strong enough to be used continuously in the form of an endless belt. There are many problems that need to be solved, such as the difficulty of increasing work efficiency.

The present invention is an attempt to solve the above-mentioned problems in belt press type filtration devices.

Means for Solving the Problems The belt press type filtration device of the present invention consists of a pair of endless belts that run opposite each other while maintaining a predetermined interval, and a continuous belt press on the opposing running surfaces of both endless belts. It is characterized by comprising a fiber sheet that is supplied to the fiber sheet, travels together with each of the running surfaces, sandwiches and filters the liquid to be treated that is fed therebetween, and is discharged together with the filter dregs.

Function In the present invention, two fiber sheets are continuously supplied between a pair of endless belts running opposite each other as the endless belts run, and the liquid to be treated is passed between the two fiber sheets. is squeezed and filtered by a pair of running endless belts, and the filter dregs are
It is sandwiched between two non-woven fiber sheets and discharged, and can be disposed of as is, such as by being dumped or incinerated.

Example An embodiment of the present invention will be described based on the drawings.

Reference numerals 1 and 2 denote endless belts, in which the lower surface 1a of the upper endless belt 1 and the lower surface 2a of the lower endless belt 2 face each other at a predetermined interval that gradually decreases from the top to the bottom. It is provided. 3 and 4 are support rollers that support the endless belts 1 and 2, respectively; 5 and 6 are drive rollers; 7,
Reference numeral 8 denotes a driven roller, and the opposing surfaces 1a and 2a are set to run downward. 9 and 10 are the endless belts 1 and 2, respectively.
a fibrous sheet running along opposite surfaces 1a and 2a of, together with said surfaces 1a, 1b;
It is continuously supplied from roll packages 11, 12 installed near the upper ends of the endless belts 1, 2. 13 and 14 are tension adjustment devices for the supplied fiber sheets 9 and 10, respectively. 15 is a storage tank for the liquid to be treated, 16 is a feed port for the liquid to be treated, 17 is the liquid to be treated, 18 is the filter dregs sandwiched between the fiber sheets 9 and 10, and 19 is a conveyor for transporting the filter dregs. be.

The endless belts 1 and 2 are made of fiber sheets 9 and 10.
It has the function of supporting the fiber sheets 9 and 10 and compressing and filtering the liquid to be treated between the two fiber sheets 9 and 10, and can be made of highly water-permeable, high-strength, corrosion-resistant material such as wire mesh or thick coarse woven fabric. Preferably, also the facing surface 1
The distance between a and 2a is set so that it gradually decreases from the top to the bottom as described above, but it can be adjusted depending on various conditions such as the properties of the liquid to be treated. It is set up so that they can be in close contact with each other. Furthermore, although the endless belts 1 and 2 are inclined in FIG. 1, they may be installed at any angle from horizontal to vertical as necessary, and the running route may be set arbitrarily as necessary. For example, the opposing surfaces 1a and 2a may be bent.

The fiber sheets 9 and 10 include woven fabrics, nonwoven fabrics,
Paper, etc. is used, and in most cases it is discarded together with the filter dregs after use.It is strong enough to withstand one use, and is preferably bulky and highly absorbent.Usually, filter paper is used. , nonwoven fabric, etc. are suitable.

In the filtration device configured as described above, the liquid to be treated 17 is continuously transferred from the liquid to be treated storage tank 15 through the liquid feed port 16 between the two fiber sheets 9 and 10 at the upper ends of the endless belts 1 and 2. The fed liquid 17 to be treated is sandwiched between the fiber sheets 9 and 10 and advances downward, and is supported by support rollers 3 and 4 to form endless belts 1 and 2 whose distance gradually decreases.
It is gradually squeezed by the opposing surfaces 1a and 2a, filtered, and separated into solid and liquid, and the filtrate 18 is discharged from the lower end while being sandwiched between the fiber sheets 9 and 10. The discharged filter dregs 18 can be disposed of by incineration or dumping while being sandwiched between the fiber sheets.

Effects of the invention In the belt press type filtration device of the invention, two fiber sheets are used as filter media, and compression and filtration are performed while supported by a pair of endless belts between them, and the filter dregs are sandwiched between the fiber sheets. Since the filter material can be disposed of by incineration, dumping, etc., any filter material with high water absorption can be selected depending on the properties of the liquid to be treated, there is no need for cleaning, etc., and the handling of filter slag is easy. It is easy to use, and when the filter dregs are earth and sand, the compaction phenomenon when dumped progresses quickly due to the water absorption action of the fiber sheet, which has a special effect. Suitable for filtering liquids to be treated.

[Brief explanation of the drawing]

FIG. 1 is a schematic side view showing an embodiment of the present invention. 1, 2... Endless belt, 9, 10... Fiber sheet.

Claims (1)

[Scope of utility model registration request] A pair of endless belts are maintained at a predetermined distance and run opposite each other. A belt press type filtration device characterized by comprising a fiber sheet that sandwiches and filters the liquid to be treated and is discharged together with the filter dregs.