JP2591683Y2 - Structure of membrane separation unit - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a membrane separation unit, and more particularly to a structure for connecting individual membrane modules constituting a membrane separation unit to a main body frame.

[0002]

2. Description of the Related Art A conventional membrane separation unit is, for example, as shown in FIG. 4 (a) and has a structure in which it is immersed in a reaction tank. In FIG. 4A, the main casing 1 is composed of an upper casing 1a and a lower casing 1
b, so that the raw water 2 in the tank flows through the inside of the main casing 1 from the lower opening of the lower casing 1b toward the upper opening of the upper casing 1a.

[0003] A plurality of membrane modules 3 are inserted and arranged inside the upper casing 1a while forming appropriate gaps between the membrane surfaces of the respective membrane modules 3 so that the membrane surfaces are arranged vertically. A diffuser 5 for aerating the air 4 is disposed inside the lower casing 1b.

[0004] As shown in FIG. 4 (b), each membrane module 3 is obtained by covering the front and back of a filter plate 6 with a filtration membrane 7 such as an ultrafiltration membrane or a microfiltration membrane. A permeate flow path 8 is provided in the filter plate 6, and a gap forming material 9 such as a nonwoven fabric for forming a flow path is interposed between the filter plate 6 and the filtration membrane 7.

As shown in FIG. 5, when inserted into the main body casing 1, the permeated liquid passage 8 of each membrane module 3 communicates with a suction pipe 11 by a tube 10, and the tube 10 of each membrane module 3 is suctioned. It is formed detachably with respect to the tube 11.

[0006]

However, in the above-described conventional configuration, the membrane separation unit requires regular maintenance for removing a cake layer attached to the membrane surface of the membrane module 3. At that time, prior to pulling out the membrane modules 3 from the main casing 1, it is necessary to remove the tubes 10 of the respective membrane modules 3 from the suction pipe 11 one by one, and since there are many membrane modules 3,
The work was cumbersome.

An object of the present invention is to solve the above-mentioned problems, and an object of the present invention is to provide a structure of a membrane separation unit in which a membrane module can be easily attached to and detached from a main body casing.

[0008]

In order to solve the above-mentioned problems, the present invention provides a structure of a membrane separation unit in which a plurality of membrane modules are arranged in a main body casing in a vertical direction with an appropriate gap therebetween. A suction channel communicating with the suction channel and the suction channel is provided in the casing, and a suction port communicating with the internal permeate flow channel is provided in the membrane module so as to face the suction port, and the suction port and the suction port are provided. The structure is such that the portion is formed in a detachable fitting structure.

[0009]

According to the above construction, the membrane module is inserted into the main casing, and the suction port of the membrane module is fitted into the suction port of the main casing. Is connected.

Further, when the membrane module is removed from the main casing, the suction port is separated from the suction port of the main casing only by pulling out the membrane module, and the permeated liquid flow path of the membrane module and the suction flow path of the main casing are shut off. .

Therefore, when the membrane module is attached to and detached from the main body casing, the membrane module is inserted and removed without the troublesome operation of attaching and detaching the tube that connects the permeated liquid flow path of the membrane module and the suction flow path of the main body casing. By simply doing so, the connection / blocking of the permeate flow path of the membrane module and the suction flow path of the main casing can be performed, and maintenance work can be easily performed.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. 1 to 3, a plurality of guide grooves 23 for inserting the membrane module 22 are provided in a comb shape on the inner surface of the main body casing 21, and the guide grooves 23 extend in the up-down direction and are adjacent to each other. A predetermined gap is formed between the guide grooves 23. On both sides of the upper portion of the guide groove 23, a stepped portion 2 recessed along the surface direction of the membrane module 22.
The suction port 2 is provided on the bottom surface 24a of the step portion 24.
5 is open. The suction port 25 communicates with a suction channel 26 provided in the main body casing 21.

As shown in FIG. 3, the membrane module 22 has a filtration membrane 28 attached to the front and back of a filter plate 27, and has a permeated liquid passage 29 provided therein. The filtration membrane 28 is obtained by forming an ultrafiltration membrane on the surface of a nonwoven fabric. Further, on both upper sides of the membrane module 22, ear portions 30 projecting sideways are provided, and the ear portions 30 are formed so as to engage with the step portions 24 of the guide grooves 23. The lower surface 30a of the ear portion 30 that contacts the bottom surface of the step portion 24 is provided with a suction port 31 that is detachably fitted to the suction port 25, and the suction port 31 communicates with the permeate flow path 29 of the membrane module 22. doing.

If necessary, the membrane module 22 is fixed to the main casing 21 by fixing bolts 33 via the holding frame 32. Hereinafter, the operation of the above configuration will be described. At the time of mounting, the membrane module 22 is
The membrane module 22 can be arranged at a predetermined position with an appropriate gap only by inserting the membrane module 22 into the main body casing 21 along the line. In addition, the guide groove 23 is
The suction port 31 of the main body casing 21 is guided to a position facing the suction port 25, so that the suction section 31 and the suction port 25 are smoothly fitted together with the insertion operation of the membrane module 22, and the transmission of the membrane module 22 is prevented. The liquid flow path 29 and the suction flow path 26 of the main body casing 21 are connected.

When the membrane module 22 is to be removed from the main casing 21, only by pulling out the membrane module 22, the suction port 31 is moved to the suction port 2 of the main casing 21.
5, the permeate flow path 29 of the membrane module 22 and the suction flow path 26 of the main casing 21 are shut off.

Therefore, the membrane module 22 can be simply inserted and removed along the guide groove 23 without the troublesome attachment / detachment operation of the tube connecting the permeated liquid flow path of the membrane module and the suction flow path of the main casing as in the conventional case. The connection and cutoff of the permeated liquid flow path 29 of the membrane module 22 and the suction flow path 26 of the main body casing 21 can be performed, and maintenance work can be easily performed.

In this embodiment, the membrane module 2
2 shows the configuration in which the ear portion 30 is formed and the ear portion 30 is provided with the mouth portion 31. However, the positions where the mouth portion 31 and the suction port portion 25 are provided are not limited to those described above. It is also possible to provide 31 at the lower edge or side edge of the membrane module 22, and the suction port 25 may be provided at a position facing the suction port 31.

[0018]

As described above, according to the present invention, the suction port provided on the membrane module and the suction port provided on the main casing are fitted to each other. It is possible to connect / disconnect the permeated liquid flow path of the membrane module and the suction flow path of the main body casing simply by inserting and removing the module, and maintenance work can be easily performed.

[Brief description of the drawings]

FIG. 1 is a perspective view of a membrane separation unit according to an embodiment of the present invention.

FIG. 2 is a longitudinal sectional view of the membrane separation unit in the embodiment.

FIG. 3 is a longitudinal sectional view of the membrane module in the embodiment.

FIGS. 4A and 4B are perspective views of a conventional membrane separation unit and a conventional membrane module, respectively.

FIG. 5 is a perspective view showing a main part of a conventional membrane separation unit.

[Explanation of symbols]

 21 Body Casing 22 Membrane Module 23 Guide Groove 24 Step 25 Suction Port 26 Suction Channel 27 Filter Plate 28 Filtration Membrane 29 Permeate Flow Channel 30 Ear 31 31 Suction Port

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-63-65931 (JP, A) JP-A-6-210142 (JP, A) JP-A-2-59098 (JP, A) 115027 (JP, U) (58) Fields surveyed (Int. Cl. ⁶ , DB name) B01D 63/08

Claims (1)

(57) [Scope of request for utility model registration] In a structure of a membrane separation unit in which a plurality of membrane modules are arranged in an up-down direction in a main body casing at an appropriate gap, a suction flow path and a suction port communicating with the suction flow path are provided in the main body casing. Wherein a suction port communicating with the internal permeate flow path in the membrane module is provided opposite to the suction port, and the suction port and the suction port are formed in a detachable fitting structure. Structure of membrane separation unit.