JP2650311B2 - Diaphragm holder for membrane filter plate - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial application field) The present invention is required to have corrosion resistance such as acid resistance and chemical resistance,
The present invention also relates to a diaphragm retainer (hereinafter, abbreviated as “presser”) of a removable membrane filter plate.

(Prior art and its problems) The conventional presser, for example, if strong acid solution is passed through the supply port, both the presser and the fixing bolt are made of not only ordinary iron but also stainless steel. This has been a serious problem in terms of life.

For this reason, a titanium alloy is used, but this has a problem that it is extremely expensive.

In addition, there is a great demand for a retainer that is corrosion-resistant and that can be easily and reliably attached to and detached from a liquid supply port during replacement and replacement due to damage to the diaphragm film.

(Means for Solving the Problems) The present invention solves the above-mentioned conventional problems.

That is, a holding member for fixing the diaphragm film at the periphery of the liquid supply port of the membrane type filter plate, wherein the side cross-section that is inserted into the inner surface of the liquid supply port and sandwiches the filter plate and the diaphragm film is opened outward. And a pair of corrosion-resistant and rigid locking members each having a flange having one end protruding outward and having a threaded engagement portion formed in the cylindrical portion thereof. The main body is composed of a plurality of first fasteners having a length equal to or less than の of the entire peripheral length of the presser main body and a second fastener which codes a gap between the fasteners, and is engaged with an inner surface of the presser main body. A metal presser body, which is inserted into the stopper and is inserted into the stopper, or is inserted into the liquid supply port, and has a metal plate presser body whose side cross section that sandwiches the filter plate and the diaphragm membrane is opened outward, and one end of the cylindrical body is formed. It has a flange that protrudes outward and has a screw engaging part formed on its cylindrical part. And a pair of corrosion-resistant and rigid locking members, and the holding member body is divided into an upper holding member and a lower holding member, and the holding member is inserted into the inner surface of the holding member body. This is a holding tool that surrounds and is connected to the holding tool body.

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

FIG. 1 is a perspective view showing an example of a presser main body used in the present invention, and FIG. 2 is a cross-sectional view of a partly omitted main part showing a state in which the presser of the present invention is attached to a membrane filter plate. It is a perspective view. FIG. 3 is a partially omitted perspective view of a main part showing a state where another presser of the present invention is mounted.

As shown in FIG. 1, a retainer body 1 made of a corrosion-resistant material having a structure in which a side cross section is opened outwardly is used. As shown in FIG. And an upper member 21 of the locking tool 2 which has an flange 23 at one end and which abuts on the inner surface of the holding tool body 1.
The diaphragm membrane A is fixed to the filter plate B by engagement of the lower member 22 with the filter member B. That is, FIG.
The holding member body 1 illustrated in FIG. 2 has a first fastening member 11 or 12 having a half or less of the entire circumference of the holding member body and a second fitting member having a shape fitted and fitted in a gap between the fastening members. The fasteners 13 are set in such a manner that they abut in the circumferential direction. And these first fasteners 1
The end faces of 1, 12 and the end face of the second fastener 13 in contact therewith are
A parallel width from the outside to the inside may be used, but a trapezoidal shape whose inside is widened is preferable in order to more easily sandwich the diaphragm membrane A and the filter plate B.

The number of the first fastener is not limited to two as described above, and may be increased as necessary. However, it is important that when set, the end faces coincide with each other and have a predetermined circumference.

Next, in order to clamp and fix the diaphragm film A and the filter plate B in a state where the diaphragm body A and the filter plate B are sandwiched by the holding member main body 1, a locking member 2 is required as shown in FIG.

The locking member 2 is composed of an upper member 21 and a lower member 22 having corrosion resistance and rigidity, each having a flange 23 protruding outward at one end of a cylindrical body, and a screw formed on a cylindrical portion of both members. Using the engaging portion, the member 21 and the lower member 22 are engaged with each other, and the locking tool 2 is pushed into the inner surface of the presser body 1 and tightened. And the diaphragm membrane A and the filter plate B can be fixed at the periphery of the liquid supply port 3 by extension.

The retainer body 1 is made of a synthetic resin such as polypropylene, polyethylene, or polyvinyl chloride, and the locking member is made of a synthetic resin of the same material as the retainer body 1 or a material having a metal surface coated with a corrosion-resistant coating. There may be.

On the other hand, the present invention shown in FIG. 3 has a metal retainer body 4 having a side cross section opened outwardly, and a flange 53 having one end of the cylindrical body projecting outward. And a pair of corrosion-resistant and rigid locking members 5 formed with the above. That is, the presser body 4 is made of a metal upper presser 41 and a lower presser 42.
The diaphragm A holding the filter plate B is sandwiched between the shoulders of the upper holding tool 41 and the lower holding tool 42, and the upper holding tool 41 and the lower holding tool 42 are
And fixed in the vertical direction.

Next, the entire surface of the metal holding member body 4 fastened as described above is covered and fastened using the corrosion-resistant and rigid locking member 5.

That is, the locking member 5 is composed of an upper member 51 and a lower member 52, and is fitted by being engaged with a screw engaging portion provided on the cylindrical portion thereof, and by flanges 53, 53 protruding outward from both members. The metal holding member body 4 is held and completely surrounded.

The locking member 5 may be made of a synthetic resin such as polypropylene, polyethylene, polyvinyl chloride, or the like, or may be one in which the metal surface is coated with a corrosion-resistant film except for the screw engagement portion.

(Effects of the Invention) The present invention has the above configuration, and thus has the following effects.

That is, according to the present invention, the attachment of the filter plate and the diaphragm membrane by the holding member main body and the fastening and fixing of the holding member by the locking member are simple and reliable, and the holding member, ie, the holding member body and the holding member The replacement is easy and convenient when the diaphragm membrane is damaged or when renewing, and the present invention is also corrosion resistant for both the stopper and the stopper on the periphery of the liquid supply port. It is made of a rigid material, or the metal presser body is surrounded by a corrosion-resistant lock to prevent corrosion, so it does not corrode even if strong acid or chemicals are passed through the supply port. It has excellent mechanical strength and can withstand use for a long period of time.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an example of a presser body used in the present invention, and FIG. 2 is a cross-sectional oblique view of a partially omitted main part showing a state in which the presser of the present invention is attached to a membrane filter plate. FIG. FIG. 3 is a cross-sectional perspective view of a partially omitted main part showing a state where another presser of the present invention is mounted. A: Diaphragm membrane, B: Filter plate, 1,4 ... Holder body, 11, 12: First fastening tool, 13: Second fastening tool, 2,5 ... Locking tool, 21 ... upper member, 22 ... lower member 23, 53 ... flange, 3 ... liquid supply port, 41 ... upper retainer, 42 ... lower retainer, 6 ... tightening screw

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁶ Identification code Agency reference number FI Technical indication F16J 3/02 B01D 29/34 520Z

Claims (2)

(57) [Claims] 1. A holding member for fixing a diaphragm membrane at a periphery of a liquid supply port of a membrane filter plate, wherein the filter plate is inserted into a liquid supply port (3) and a filter plate (B) and a diaphragm film (A). Holder body (1) made of a corrosion-resistant material having a lateral cross-section opening outwardly and a flange (23) having one end protruding outwardly, and a screw engaging portion is formed in the cylindrical portion. And a pair of corrosion-resistant and rigid locking members (2), and the presser body (1) has the entire circumference of the presser body.
It is composed of a plurality of first fasteners of 1/2 or less and a second fastener corresponding to a gap between the fasteners, and the fastener (2) is pushed into the inner surface of the presser body (1). Diaphragm holder of membrane type filter plate which is combined. 2. A holding member for fixing a diaphragm membrane at a peripheral edge of a liquid supply port of a membrane type filter plate, which is inserted into a liquid supply port (3), and includes a filter plate (B) and a diaphragm film (A). A metal presser body (4) having a lateral cross-section opening outward and a flange (53) projecting outward at one end of a cylindrical body, and forming a screw engaging portion in the cylindrical portion thereof And a pair of corrosion-resistant and rigid locking members (5). The holding member body (4) is divided into an upper holding member (41) and a lower holding member (42). A diaphragm presser of a membrane type filter plate, wherein a stopper (5) is inserted into an inner surface of a tool body (4) and surrounds and is connected to the presser body (4).