JPH038330Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a precoating device for a cartridge type precoating device, which is designed to uniformly precoat an element to be precoated with a precoating agent.

In recent years, as various industrial fields have become more sophisticated, there has been an increasing demand for high-quality industrial water, especially water that does not contain colloidal components, suspended matter, fine particles, bacteria, etc.

In order to produce water that does not contain such harmful contaminants, contaminants have traditionally been removed by passing the raw water through a precision filtration device. Because of the phenomenon in which the pores of the membrane are clogged, the overspeed has been gradually reduced. As a result, it is necessary to frequently replace the overheating device, which is both troublesome and economically disadvantageous.

The present invention was developed in response to the above problems, and the conventional precision filter is replaced with a cartridge-type element (superdevice), and this element is configured to be pre-coated with a pre-coating agent. It is an object of the present invention to provide a precoat device for a cartridge type precoat vessel which removes .

The precoat filtration method has been known for a long time and has been used, for example, in condensate treatment. This method uses a pre-coating agent such as diatomaceous earth, perlite, cellulose, powdered activated carbon, powdered ion exchange resin, etc. on a wire ring type element or a porous perforated element made of stainless steel wire wrapped at intervals of 80 to 100 μm. This slurry is made into a slurry with water, which is then precoated and passed while being circulated by a pump, and was used in applications that require large amounts of water treatment with large equipment.

However, the pre-coating equipment used in such pre-coating methods is large in size, resulting in poor pre-coating efficiency and the pre-coating agent is often not uniformly pre-coated on the element, making it easy for the suspensions mentioned above to leak. Therefore, high overefficiency could not be obtained.

In this regard, in the present invention, such a problem does not occur because the element is of a cartridge type (small container) and the precoating agent is precoated onto the cartridge type element.

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a cross-sectional view showing a cartridge-type precoating device for a precoating vessel according to an embodiment of the present invention. 1 is a main body of the precoating device, and drain ports 2, 3, and 4 are provided with valves at the bottom and side of the main body 1, respectively.
Provided together with V ₁ , V ₂ , and V ₃ . 5 is a cartridge type pre-coated element that can be used for carbon, porcelain,
It is formed into a porous cylindrical shape from sintered metal, synthetic resin, etc., and the pore diameter is selected to be 10 to 0.2 μm, for example. Alternatively, it can be made of synthetic fiber. A protective cloth 6 is made of natural or synthetic fiber and covers the surface of the element 5 to prevent damage to the precoating agent. 7 is element 5
This is the slurry inlet provided at the top of the.

Reference numeral 8 denotes a cylindrical holding device which has a drain port 9 and a water supply port 10 at the bottom and top, and serves to hold down the element 5 in order to locate it in the center of the main body 1 and fix it to the bottom. Numerals 11 and 12 are gaskets for tightly fixing the elements, which are tightened by a tightening fitting 14 provided on the lid 13 of the main body 1.

15 is a precoat guide provided around the presser device 8, 16 is a lever that engages with the precoat guide 16, and 17 is a pressure gauge port.

In the above configuration, diatomaceous earth, perlite, cellulose, powdered activated carbon, powdered ion exchange resin, etc. are used as a pre-coat agent, and made into a slurry with water, and while this slurry is circulated by a pump, it is passed from the water supply port 10 to the presser device. Supply within 8 days.

The slurry in the holding device 8 is injected into the element 5 from the drain port 9 through the slurry inlet 7.

As a result, the element 5 is pre-coated with the pre-coating agent, and the water after pre-coating penetrates the element 5 or the protective cloth 6 and is stored inside the main body 1. Thereafter, as necessary, the water is applied to the valves V ₁ and V ₃ . Water is drained from the drain ports 2 and 4 by adjustment.

FIG. 2 shows a coating device incorporating a precoat device according to the present invention, in which 20 is a precoat device, 30 is a precoat agent tank, P is a pump, T is a pipe, and PG is a pressure gauge.

First, the precoat agent and water prepared in the precoat agent tank 30 are stirred to form a slurry, and then the slurry is supplied into the precoat device 20 by the pump P. The slurry passed through the elements in the precoat device 20 becomes water and returns to the precoat agent tank 30 via the pipe T.
It is returned to the inside, and the same circulatory action is repeated thereafter.

The slurry is adjusted into the presser device 8 by moving the precoat guide 15 up and down. In addition, by appropriately adjusting the valves V ₁ and V ₃ , it is possible to supply a slurry that corresponds to the type of precoat agent having different particle size, specific gravity, etc.

The precoat agent used should preferably have a small apparent specific gravity, be bulky, have good dispersion and suspension properties, and have uniform particles. If these are precoated and passed through the filter, suspended matter can also be efficiently removed.

In particular, when a powdered ion exchange resin is used, desalination is also performed at the same time, and colloidal components, fine particles, bacteria, etc., which are particularly difficult to remove, can be easily removed. As the ion exchange resin, the permeability can be further improved by using a so-called mixed bed type in which both positive and negative ion exchange resins are mixed, or by changing the mixing ratio of both resins.

Pre-coated cartridge style element (
The precoated portion of the container will disappear when it dries, so it is necessary to store it in a moist state.

It is also effective to preserve it in formalin to prevent bacterial growth.

When attaching and detaching the cartridge type filter after precoating, its surface is covered with a protective cloth, so it can be handled with confidence.

As is clear from the above description, according to the present invention, there is provided a main body of the precoat device having drainage ports at the bottom and sides, a cartridge-type precoat element located at the center of the main body and installed at the bottom, and and a cylindrical presser device having a drainage port and a water supply port at the top for fixing the element, and a precoat guide installed around the presser device, and water supply to the presser device by moving the precoat guide up and down. Since the slurry for pre-coating is supplied from the port and injected into the element through the drain port, the pre-coating agent can be uniformly pre-coated onto the element, thereby improving overefficiency. .

As a result, it has become possible to prevent clogging of the pores, making it easier to remove suspended solids, and in addition, the removal efficiency of other harmful mixtures, including suspended solids, can be greatly improved. Now I can do it.

In addition, since the pores are not clogged, the overlife can be increased, and even if the element needs to be replaced, it can be done easily since it is a cartridge type, making it easier to use.

Note that the specifications of the elements shown in the embodiments of the text are merely examples, and are not limited thereto. For example, it is also possible to use elements used in conventional precoating devices depending on the purpose and use.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing an embodiment of the present invention, and FIG. 2 is a schematic diagram for explaining the present invention. 1... Precoating device main body, 2, 3, 4, 9...
...Drain port, 5...Cartridge type element, 6
... Protective cloth, 7 ... Inlet, 8 ... Holding device, 1
0...Water inlet, 11, 12...Packkin, 13...
... Lid, 14 ... Tightening metal fittings, 15 ... Precoat guide, 16 ... Lever, 17 ... Pressure gauge port.

Claims (1)

[Scope of utility model registration request] A precoat device main body having drainage ports at the bottom and sides, a cartridge type precoating element located in the center of the main body and installed at the bottom, and the element having a drainage port and a water supply port at the bottom and top. It includes a cylindrical presser for fixing the presser and a precoat guide installed around the presser, and by moving the precoat guide up and down, precoat slurry is supplied from the water supply port of the presser and the drain port is 1. A precoat device for a cartridge type precoat vessel, characterized in that the precoat device is configured to inject into the element through the cartridge.