JPH0725927U - Concentrator using filtration membrane - Google Patents

Abstract

(57) [Abstract] [Purpose] To obtain a concentrating device that constitutes a high-pressure filtration chamber that can be easily sealed and opened, and that can easily regenerate or replace the filter medium charged inside. [Structure] Frame-shaped filter frames are movably arranged side by side on a pair of horizontal rods, and a cylindrical filtration membrane is vertically installed in a hollow portion of these filter frames. A fluid passage communicating with the hollow portion of the frame and a fluid passage communicating with the inner space of the filtration membrane were provided, and a flexible tube was connected to the fluid passage communicating with the inner space. By closely adhering each filter frame, a filtration chamber that can withstand high pressure can be configured, and by dissociating each filter frame, the filtration chamber can be opened and replacement and regeneration of the filtration membrane can be facilitated.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to the improvement of a concentrating device using a cylindrical filtration membrane composed of a ceramic membrane, etc., and a concentrating chamber can be simply constructed, the concentration efficiency per installation area is high, and the operating operation and maintenance are still possible. It provides a device that is easy to operate.

[0002]

[Prior art]

 Conventionally, it is known to filter and concentrate food waste water, sewage treated water, etc. using a hollow fiber membrane composed of a ceramic membrane or a high molecular weight material. JP-A-2-307504 and JP-A-4-135632 are examples thereof, in which a filter medium made of a ceramic membrane and a hollow fiber membrane are suspended in a closed tank.

[0003]

[Problems to be solved by the device]

 However, in the conventional device as described above, the filter medium (filtration membrane) used for concentration is provided in the closed tank, and it is troublesome to attach it, and it is not necessary to regenerate or replace it when it is clogged. In addition, since high pressure is used for operation, the closed tank must be constructed robustly and is expensive.

[0004]

[Means for Solving the Problems]

 This invention can solve the above-mentioned problems, and the gist of the invention is that a number of frame-shaped hollow filter frames are arranged in parallel on a pair of horizontal rods, and these hollow filter frames are closely attached. By doing so, a concentrating chamber is formed, and a large number of cylindrical filtration membranes are arranged in parallel in the hollow part of each filter frame, while on the other hand, in each filter frame, they are connected to the hollow part of the filter frame. In addition, a fluid passage that forms a communication pipe when the filter frames are brought into close contact with each other and a fluid flow passage that communicates with the inner space of the filtration membrane are provided, and the flow passage is opened outside the filtration frame, and the opening portion is provided. The filtrate extraction pipe was connected, and a backwash fluid pipe was connected to this extraction pipe via a valve. The cylindrical filtration membrane provided in the hollow portion of the filter frame may be a ceramic membrane or a hollow fiber membrane module composed of a high molecular weight material.

[0005]

[Action]

 The device according to the present invention is configured as described above, and if each filter frame is closed and adhered to each other, a large high-pressure concentrating chamber in which many filtration membranes are arranged in parallel is formed. be able to. Therefore, when the stock solution to be concentrated is supplied from the flow path provided in the filter frame, the stock solution is dispersed throughout the concentration chamber and filtered and concentrated by a large number of filtration membranes arranged in parallel. That is, the filtrate separated by filtration is taken out of the machine from the inner space of the filtration membrane through the fluid flow path provided in the filter frame, and the filtrate is separated in the concentration chamber. It is what collects the liquid. When the amount of filtrate discharged decreases in such an operation, the stock solution in the concentrating chamber is sufficiently concentrated, and at the same time, the filtration membrane is also clogged, so the filter frame is opened to concentrate it. The liquid can be dropped and taken out of the machine. On the other hand, for the clogged filtration membrane, the backwash fluid is sent from the flow path for removing the filtrate, so that the clogging can be blown out and the clogging can be eliminated. In this backwashing, since a filtration membrane made of ceramic or the like is used as a filter medium in this invention, the backwashing fluid can be uniformly washed and regenerated without short circuit. Also, when clogging remains on the surface of the filtration membrane, the filter frame is opened so that it can be easily removed by applying high pressure washing water from the outside. In addition, to construct or open the concentrating chamber, the present invention requires only a simple operation of opening and closing the filter frame, and by increasing or decreasing the number of filter frames, a concentrating chamber having a desired capacity can be easily constructed. Can be set to. The present invention will be specifically described below with reference to the drawings.

[0006]

【Example】

 FIG. 1 is a side view of the outline of a concentrating device according to the present invention. In the figure, reference numeral 1 is a frame arranged on the left and right, 2 is a pair of guide rails bridged between the frames, 3 is a guide rail. It is a filter frame that is movably arranged on the upper part of the table 2. Reference numeral 4 is a movable head for tightening the filter frame 3, 5 is a fixed head, 6 is a tightening cylinder provided integrally with the movable head 4, and 7 is an opening device for the filter frame 3, and its upper part. A cleaning nozzle 7a is provided on the rail so that the chain 8 can move on the rail 9. Reference numeral 10 is a stock solution supply pipe, 11 is a filtrate (separated liquid) take-out pipe, and a flexible pipe 12 is connected to a filtrate take-out flow path of each filter frame via a valve 14. is there.

Next, the configuration of the filter frame 2 will be described with reference to FIGS. 2 and 3. In the figure, reference numeral 13 is a cylindrical filtration membrane disposed in the hollow portion 3a of the filter frame 3, and in the illustrated example, a cylindrical ceramic membrane is used. The inner space of the filtration membrane 13 communicates with a filtrate flow path 3b provided in the filter frame 3 through a branch path 3c thereof. The filtrate flow path 3b is connected to the take-out pipe 11 via the flexible pipe 12 described above. The stock solution supply pipe 10 described above forms a communication pipe in the filter frame 3 by closing and closely contacting the filter frame 3 as shown in FIG. It communicates with the part 3a. In the figure, 3d indicates a sealing surface formed on the peripheral surface of the filter frame 3, and 3e indicates a support arm for suspending the filter frame 3 on the guide rail 2.

The device according to the present invention is configured as described above, and when the filter frame 3 is closed and tightened by the tightening cylinder 6, a strong concentration chamber containing a large number of filtration membranes 13 is formed. can do. Therefore, when the stock solution is supplied to the concentrating chamber through the supply pipe 10, the liquid content is separated by the filtration membrane 13 and taken out of the machine through the take-out pipe 11, and the concentrated liquid in which the liquid content is separated is collected in the concentrating chamber. Obtainable.

Next, when the concentration operation is continued and the discharge of the separated liquid from the extraction pipe 11 is reduced, the concentration chamber can be opened by opening each filter frame 3. It is possible to collect the concentrated liquid by dropping it and receiving it with a tray. Thereafter, as shown in FIG. 1, if the cleaning pipe 7a is provided in the frame opening device 7, even the solid matter adhered to the sealing surface 3d of the filter frame 3 and the outer peripheral surface of the filtration membrane 13 can be washed off.

Further, according to the present invention, when the amount of the separated liquid becomes small (when the filtration membrane is clogged), the high pressure fluid is not necessarily opened from the filter frame 3 but is closed from the extraction pipe 11 side. By press-fitting (high-pressure air or the like), the clogging of the filtration membrane 13 can be blown out and regenerated. At this time, the concentrated liquid containing the blown solid matter can be taken out of the apparatus through the stock solution supply pipe 10. During this reverse blow, since the filter medium is a filtration membrane, fine through holes are evenly formed in the filter medium surface, and unlike the conventional filter cloth, the high-pressure fluid is not short-circuited and blown out.

Further, in this invention, when the filter membrane 13 is renewed when it is clogged, the filter frame 3 is opened and the backwashing fluid is sent, so that the filter membrane 13 can be fed from the inside and outside. It is also possible to wash and regenerate at the same time. In the structure shown in FIG. 1, one filter frame 3 is opened, but a large number of filter frames can be opened at the same time.

[0012]

[Effect of device]

 As is clear from the above description, the concentrating device according to the present invention can extremely easily configure a concentrating chamber that requires a structure that can withstand high pressure, and can filter a large number of filtration membranes in parallel in the concentrating chamber. A highly efficient concentrator with a large area can be formed, and the size can be easily adjusted simply by increasing or decreasing the number of filter frames.In addition, if the filtration membrane becomes clogged, the filter frame can be opened. By doing so, the filtration membrane can be thoroughly cleaned by cleaning it from inside and outside, and the filtration membrane can be taken out of the concentrating chamber, which facilitates inspection and maintenance of the filtration membrane.

[Brief description of drawings]

FIG. 1 is a schematic side view of a concentrator to which the present invention is applied.

FIG. 2 is likewise a front view of the filter frame.

FIG. 3 is likewise a vertical side view of the filter frame.

[Explanation of symbols]

 2 Guide rail 3 Filter frame 3a Hollow part 3b Flow path 10 Supply pipe 13 Filtration membrane 14 Valve

Claims (3)

[Scope of utility model registration request] 1. A frame-shaped hollow filter frame (3) having a pair of horizontal rods (2).
A large number of the filter frames 3 are arranged side by side on top of each other, and the hollow filter frames 3 are brought into close contact with each other to form a concentrating chamber.
A large number of cylindrical filtration membranes 13 are arranged in parallel in the hollow portion 3a of
On the other hand, in each filter frame 3, a fluid passage 10 that communicates with the hollow portion 3a of the filter frame 3 and forms a communication pipe when the filter frames 3 are in close contact, and the inner space of the filtration membrane 13 Is provided with a fluid flow path 3b that communicates with, and the flow path 3b is opened outside the filter frame,
A filtrate take-out pipe 11 is connected to the opening, and the take-out pipe 1
A concentrating device using a filtration membrane 13 in which a backwashing fluid pipe is connected to 1 through a valve 14. 2. The concentrating device using a filtration membrane according to claim 1, wherein the filtration membrane 13 provided in the filter frame 3 is a cylindrical ceramic membrane. 3. The concentrating device using a filtration membrane according to claim 1, wherein the filtration membrane 13 provided in the filter frame 3 is a hollow fiber membrane module.