JPS6134004Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a frame used in a dual filter for solid-liquid separation.

In the conventional plate-type filtration machine, the stock solution is forced into all the sieve chambers at the same time, and the filtration is performed only by the injection pressure of the stock solution, resulting in a long overtreatment time. Therefore, the applicant of this application is
In No. 57-60883, they provided a new filtration method and an invention that could accelerate filtration and shorten the filtration time. That is, the plate is made of a flexible material, and by flexing the plate by alternately pressurizing the stock solution into each overchamber, the adjacent overchambers are repeatedly compressed, thereby making it possible to speed up the overheating process. However, due to the method of alternately pressurizing the stock solution into the overchamber,
Since it is necessary to provide two stock solution supply pipes in each frame, a problem arises in that the structure of the frame and the stock solution supply device become complicated.

Therefore, the present invention provides a framework that can overcome these drawbacks, and the details of the present invention will be described below with reference to illustrated embodiments.

The frame Sa shown in FIG. 1 has a core frame 1 covered with a thick rubber elastic material 2, a stopper 3 for regulating the compression of the elastic material 2, and an arm 4 equipped with moving rollers. It makes up the body. The inner circumferential surface of the elastic member 2 is formed into an inclined surface shape, and seal pieces are provided protruding from both side peripheries. Reference numeral 5 denotes a passage projecting member made of an elastic body having approximately the same width as the elastic member 2, and is baked and welded to a flat portion provided at the upper center end of the elastic member 2. The passage projecting member 5 has a pair of independent stock solution supply holes 6 and 7 formed in parallel in the horizontal direction, and a through hole 6a that communicates with one of the supply holes 6 and opens toward the inner periphery of the frame. (See Figures 2 and 3). The inner periphery of the lower end of the protruding member 5 also has an inclined surface shape 5a, and thin seal pieces 5 are provided on both sides of the inner periphery.
b, 5c are provided protrudingly and are formed to have the same shape as the inner peripheral surface of the elastic member 2 of the frame. In addition, thin pieces 6b and 7
It is surrounded by b. The frame Sa formed in this way
and a frame Sb which is the same as the frame Sa but has a through hole 7a communicating with the other supply hole 7 as shown in FIG.
It constitutes two types of frames. In addition, board K
As shown in Figure 5, the supply holes 6 and 7 of the frames Sa and Sb are
The stock solution passage holes Ka and Kb are transparently provided at positions corresponding to the holes Ka and Kb, and the plate portion forming the overchamber is formed of a flexible member. Next, an explanation will be given of overaction using a frame with such a configuration. By interposing two kinds of frames Sa and Sb alternately between the plates K equipped with a water passage network and cloth E, each plate K can be closed under pressure as shown in Figs. 6 and 7. The passage holes Ka and Kb of the cloth E and the plate K communicate with the supply holes 6 and 7 of the respective frames, forming two independent stock solution holes Na and Nb. At this time, since the protruding member 5 is an elastic body and the thin pieces 6b and 7b are used, the respective supply holes 6 and 7 are
is completely sealed to plate K. Furthermore, since the stopper 3 prevents the elastic material 2 and the protruding member 5 from being extremely compressed when the plate K is pressurized, they are not damaged, and the stock solution holes Na and Nb are also maintained in good condition. It is. With two independent stock solution holes Na and Nb formed in this way, each stock solution hole is
By injecting the stock solution into Na and Nb at the same time, the stock solution flows through the respective through holes 6a and 7a into all the overchambers Pa and Pb.
It is press-fitted at the same time and begins to overflow. After a certain period of time has elapsed, the supply of the stock solution is continued to only one stock solution hole Na, and the stock solution supply to the other stock solution hole Nb is stopped. This allows the stock solution to pass only through the through hole 6a and
Only Pa will be press-fitted. Since this over-chamber Pa is formed and arranged every other time, the over-chamber Pa
The plate K bends and presses the adjacent overchamber Pb, thereby promoting the overflow of the overchamber Pb. Next, the supply of the stock solution to one stock solution hole Na is stopped, and the stock solution is supplied to the other stock solution hole Nb, thereby forcing the stock solution into only the excess chamber Pb from the through hole 7a. As a result, the plate K of the over-chamber Pb is bent and presses the adjacent over-chamber Pa, thereby promoting over-chamber. By alternating the supply of the stock solution to the stock solution holes Na and Nb in this way, the stock solution is alternately forced into every other overchamber and a strong overaction can be achieved. Note that this alternating supply of the stock solution may be performed using a device that supplies the stock solution individually to each of the stock solution holes Na and Nb, or may be performed using a single supply device and a switching valve. In addition, in order to prevent the stock solution from flowing back out of the overchamber compressed by the bent plate, a backflow prevention valve B may be provided at the openings of the through holes 6a and 7a of the frame (Fig. 2, virtual (see line). However, if the stock solution is supplied alternately when the slag is about to harden, there will be less stock solution flowing back, so a backflow prevention valve or the like is not necessarily required. In this way, according to this example, there is no need to provide stock solution supply pipes that are conventionally connected to all the frames, and the frame has a simple configuration, and the supply holes 6, 7
Since it is formed on the overchamber side, the supply hole 6,
Even if the undiluted solution leaks from 7, it can reduce the amount of the leaked undiluted solution spouting out.

Although this example is configured as described above, the present invention is not limited to this. For example, regardless of the shape of the passage protruding member through which the supply hole is inserted and the position in which it protrudes into the frame, a pair of protruding members with one supply hole provided therethrough may be installed protruding from the frame as shown in Fig. 9. You can also do that. In addition, the attachment of the protruding member to the frame is also appropriate,
As shown in FIG. 8, the projecting member 9 may be attached by being locked onto a mounting piece 8 bolted to the core frame 1 of the frame body. Further, the structure of the frame body is not limited, and may be the same structure as the conventional one. Note that the configuration of the stock solution supply device is also arbitrary. Furthermore, if the shape of the inner circumferential surface of the frame and the protruding members are formed symmetrically with respect to the central vertical line, one type of frame can be used in opposite directions to make two types of frames, which can be easily manufactured.

In short, the present invention proposes a passage projecting member formed by a pair of independent stock solution supply holes opened in parallel in the frame of a duplex filtration machine in which a frame is interposed between the plates, or a pair of passage protrusions with a single stock solution supply hole opened through the frame. The passage protruding member is made to protrude toward the overchamber side, and a frame body having two stock solution supply holes is provided on the overchamber side, and the through hole opening on the overchamber side is communicated with one of the supply holes. The frame consists of two types of frames: one in which the through hole is connected to the other supply hole, and a frame in which the through hole is formed to communicate with the other supply hole, and each plate has a through hole provided at a position corresponding to the pair of supply holes. This is a frame for a dual-type filter machine, which is characterized in that the frames are used by interposing them alternately.

Therefore, according to the present invention, by using a filtration machine that accelerates filtration by supplying filtrate to alternate filtration chambers, it is possible to easily create two independent filtration holes without the need for conventional piping connections. Therefore, the configuration of the stock solution supply device is simple and the equipment is low cost.Since the stock solution hole is formed on the side of the overchamber, even if the stock solution leaks from the supply hole, it will not be removed from the overchamber. This has the advantage that there is less chance of the cloth being blown out to the outside by being guided by the cloth, and that it is extremely easy to remove and replace the cloth since it is not necessary to fix the cloth to the plate.

[Brief explanation of the drawing]

Fig. 1 is a front view showing one implementation of the present invention, Fig. 2 is an enlarged vertical sectional view of the main part thereof, Fig. 3 is an enlarged cutaway sectional perspective view of the main part, Fig. 4 is a front view of the other frame, Fig. 5 is a front view of a board using the frame, Fig. 6 is a longitudinal cross-sectional view showing its usage, Fig. 7 is a cross-sectional view taken along line A-A in Fig. 6, and Fig. 8 is a longitudinal cross-section of the main part of another example. FIG. 9 is a front view showing another example. 3... Stopper, 5, 9... Passage protrusion member,
6, 7...Stock solution supply hole, 6a, 7a...Through hole, K
...plate, Ka...stock solution passage hole, Na, Nb...stock solution hole, Pa, Pb...overchamber, Sa, Sb...frame.

Claims (1)

[Scope of utility model registration request] In the frame of a duplex filtration machine in which a frame is interposed between the plates, a passage protrusion member consisting of a pair of independent stock solution supply holes opened in parallel, or a pair of passage protrusions with one stock solution supply hole opened through the frame. The member is made to protrude toward the overchamber side, and a frame body having two stock solution supply holes is provided on the overchamber side, and a through hole that opens on the overchamber side is connected to one of the stock solution supply holes and is provided in the passage protruding member. It consists of two types of frames: a frame and a frame in which the through hole is formed to communicate with the other stock solution supply hole, and two types of frames are formed between the plates with passing holes provided at positions corresponding to the pair of stock solution supply holes. A frame for a dual-type flow machine characterized by the use of alternately interposed frames.