JPH0350976Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention is a filtration device using hollow fiber membranes, in particular, a large number of hollow fiber elements can be reliably and easily attached to a partition plate provided in a closed container. can,
Furthermore, the present invention relates to a device that can be easily removed from the partition plate.

(Prior art) Conventionally, a filtration device in which a plurality of hollow fiber elements using hollow fiber membranes (including hollow fiber membranes formed in a U-shape) with one end sealed is housed in a container has been used to store water, aqueous solutions, organic It is widely used for liquids, etc.

By the way, as the overtreatment time increases, a large amount of suspended matter adheres to the surface of the hollow fiber membrane, and the overcapacity gradually decreases, so backwashing and washing are performed as appropriate to maintain the overcapacity. If repeated, the hollow fiber membrane will deteriorate and must be replaced at an appropriate time. Conventionally, as shown in FIGS. 6 and 7, a large number of mounting holes 32 are bored in a partition plate 31 provided in a closed container 30 in an equilateral triangular arrangement, and hollow fiber elements 33 are inserted into the mounting holes. Focusing fixing part 34 of
The flange 35 provided in
was held down from three directions and fixed with bolts (Japanese Patent Application Laid-open No. 145380/1983).

(Problems to be Solved by the Invention) In the method of fixing the hollow fiber elements to the mounting holes, the arrangement pitch between the hollow fiber elements becomes larger than necessary, and as a result, the diameter of the closed container has to be increased. Furthermore, because it is difficult to insert and remove the hollow fiber element into the mounting hole by remote control, it has not been possible to apply it to applications that require remote control, such as the treatment of radioactive waste liquid.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a fiber filter device in which the hollow fiber elements can be easily replaced and the pitch between the hollow fiber elements can be reduced to reduce the size of the entire device.

(Means for Solving the Problems) The filtration device according to the present invention has a large-diameter partition plate that divides the inside of the closed container into a liquid chamber to be treated and a liquid chamber to be treated, which has a female thread on the small-diameter portion and the inner periphery. A plurality of stepped mounting holes are formed, and the stepped mounting holes are fixed together with adhesive so that one end is sealed and the other end is open.
A hollow fiber element provided with a flange is inserted into the focusing fixing part, and the flange of the hollow fiber element is locked at the step of the stepped mounting hole, and at the same time, the large diameter part of the stepped mounting hole is This device is characterized in that a cylindrical fixture with a male thread provided on the outer periphery is screwed to fluid-tightly press the collar of the hollow fiber element into the stepped portion of the stepped mounting hole.

(Function) The device of the present invention uses a cylindrical fixture to clamp the flange provided on the focusing and fixing part of the hollow fiber element, so the arrangement pitch of the hollow fiber elements is adjusted to the minimum necessary pitch so that the fixture does not touch. The diameter of the sealed container can be reduced compared to conventional devices. Furthermore, since the cylindrical fixture that clamps the hollow fiber element can be rotated by remote control, it can be applied to applications that require remote control, such as the treatment of radioactive waste liquid.

(Embodiment) Next, an embodiment of the overlay device of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of a hollow fiber element used in the device of the present invention, and the hollow fiber element 3
connects the upper part of a large number of hollow fiber membranes 7 to the end portion 16 of the hollow fiber membrane.
The hollow fiber membranes are bundled and fixed with an adhesive (the bundle fixing part 4) so that they are open, and the lower end opening of each hollow fiber membrane is sealed with an adhesive. The lower end of the hollow fiber membrane may be formed into a U-shape. Further, the lower ends of the hollow fiber membranes may be formed as free ends without being fixed to each other, or the hollow fiber membranes may be fixed at their lower ends. At the upper end of the focusing fixing part 4 of the hollow fiber membrane, there is a first flange part for remotely inserting and removing the hollow fiber element 3 into a mounting hole drilled in a partition plate provided in the closed container. 6 is formed. The first flange 6 may have any shape as long as it can be held by a hollow fiber element gripper (not shown), for example, a shape obtained by cutting off both sides of a disk shown in FIG. 1, a disk shape, or an elliptical disk shape. It can be made into various shapes such as. Further, a second flange 5 is provided in the convergence fixing part, spaced apart from the first flange 6, for clamping the hollow fiber element 3 into the mounting hole. The second flange 5 is clamped from above to the partition plate with a cylindrical fixture (not shown) at its peripheral edge through the first flange 6 to liquid-tightly place the hollow fiber element inside the container. The first flange 6 is attached to the
must be larger than the diameter of In FIG. 1, the first flange 6 and the second flange 5 are integrally formed on the convergence and fixation part 4 of the hollow fiber membrane using an adhesive that converges and fixes the hollow fiber membrane 7.

Further, as shown in FIG. 2, a cylindrical body 37 having a first flange 6 at the upper end is glued or screwed into the focusing fixing part 4 of the hollow fiber element having a second flange 6 at the end. may be converted into In that case, the first flange 6 for hanging may be provided either on the outside or inside of the cylindrical body 37. It can also be provided on both sides. FIG. 2 shows an example in which it is provided on both sides. When remote control is not performed, the first flange 6 does not necessarily need to be provided. In that case, the second flange 5 is preferably provided at the end of the focusing and fixing part 4. It is preferable to use an adhesive with relatively high hardness for binding and fixing a large number of hollow fibers. Suitable adhesives include those having a Rockwell hardness (M scale) of 60 or higher at room temperature, such as epoxy resins, unsaturated epoxy resins,
Plastics such as unsaturated polyester resins, phenolic resins, urea resins, and polyurethanes, as well as inorganic substances such as talc, titanium, and silica added to these plastics as fillers, and composites in which fibers such as glass and vinylon are dispersed. can be used.

Further, as the hollow fiber membrane, a precision membrane or an ultrafiltration membrane is used. Such hollow fiber membranes are made of polymeric materials such as polyvinyl alcohol, cellulose acetate, polyamide, polyolefin, polyacrylonitrile, and polysulfone, or inorganic materials such as glass and ceramic, formed into a hollow shape.

The hollow fiber element 3 is inserted into a plurality of stepped mounting holes drilled in a partition plate 2 that divides the inside of the closed container 1 into a liquid chamber B to be treated and a liquid chamber A to be treated, as shown in FIG. It will be worn. The liquid to be treated containing suspended matter is then introduced from the stock solution introduction pipe 10 into the liquid to be treated chamber B in the container, and the hollow fiber membrane 7 forming the hollow fiber element 3 is introduced into the liquid to be treated chamber B in the container.
The suspension is blocked by. The filtrate that has passed through the hollow fiber membrane is led to the processing liquid chamber A and the processing liquid outlet pipe 1.
1 and taken out of the sealed container. 12 is a residual liquid discharge pipe, and 13, 14, and 15 are valves.
17 is a protective net that prevents entanglement of the hollow fiber membrane during backwashing and the like.

The hollow fiber element 3 is attached to the partition plate 2 that divides the inside of the closed container into two parts, as shown in FIG. After inserting it into the mounting hole 18 and locking the second flange 5 to the stepped part of the mounting hole,
A cylindrical fixture 9 having a handle 20 on the upper part is screwed into the large diameter part formed in the mounting hole, and the peripheral edge of the second collar part 5 of the hollow fiber element is pressed through the packing 8. It is press-fitted to the partition plate 2 in a liquid-tight manner. When replacing the hollow fiber element, after removing the fixture 9 by rotating the member (not shown) that holds the handle 20 by remote control, attach the handle 20 to the tip of the hollow fiber element 3 as shown in FIG. By gripping the provided first flange 6 with the gripper 21 and lifting the gripper, the hollow fiber element can be lifted up and taken out from the attachment hole 18 of the partition plate 2. At this time, if the packing 8 (flat packing, O-ring, etc.) is adhesively fixed to the second flange 5 of the hollow fiber element 3, the packing can also be removed at the same time.

(Effects of the invention) The filtering device of the present invention locks the second flange formed on the convergence fixing part of the hollow fiber element to the stepped part of the stepped mounting hole drilled in the partition plate, thereby forming a cylindrical shape. Since the second flange is clamped to the partition plate using the fixing device, the arrangement pitch of the hollow fiber elements can be set to such a pitch that the fixing device does not come into contact with each other, and the diameter of the sealed container can be reduced.

Furthermore, since the hollow fiber element is clamped with a cylindrical fixture, remote control is possible, and it can be applied to applications that require remote control, such as the treatment of radioactive waste liquid.

[Brief explanation of drawings]

Fig. 1 is a perspective view of a hollow fiber element used in the device of the present invention, Fig. 2 is a sectional view showing another embodiment of the hollow fiber element, and Fig. 3 is a sectional view of the device of the present invention. 4 and 5 are sectional views showing how the hollow fiber element is attached to and removed from the apparatus, and FIGS. 6 and 7 are a plan view and a sectional view of the conventional fiber apparatus. DESCRIPTION OF SYMBOLS 1... Airtight container, 2... Partition plate, 3... Hollow fiber element, 4... Focusing fixing part, 5... Second collar part, 6... First collar part.

Claims (1)

[Scope of utility model registration request] A plurality of stepped mounting holes consisting of a small diameter part and a large diameter part with a female thread on the inner periphery are bored in the partition plate that divides the inside of the sealed container into a liquid chamber to be processed and a liquid chamber to be processed. Insert into the mounting hole a hollow fiber element that is bundled and fixed with an adhesive so that one end is sealed and the other end is open, and a flange is provided in the bundled and fixed part, and the hollow fiber element is inserted into the stepped part of the stepped mounting hole. At the same time as locking the flange of the hollow fiber element, a cylindrical fixture with a male thread on the outer periphery is screwed into the large diameter part of the stepped mounting hole to mount the flange of the hollow fiber element in a stepped manner. A device that is characterized by being fluid-tightly clamped onto the stepped portion of a hole.