Plate-type diffuser

Abstract

The present invention relates to a plate-type diffuser that is coupled to a membrane The plate-type diffuser according to one aspect of the present invention comprises: a lower plate; an upper plate having air discharge holes and coupled to the lower plate; side plates covering both ends when the upper plate and the lower plate are coupled together; and a membrane which covers the air discharge holes while surrounding the outer surface of the upper plate, and has widthwise ends pressed by the lower plate, wherein the side plates press the membrane toward the ends of the upper plate.

Description

Plate-type air diffuser

[0001] The present invention relates to a plate-shaped air diffuser combined with a membrane.

[0002] Biological wastewater treatment methods operate by using microorganisms within a treatment tank to remove nitrogen and phosphorus, which are problematic constituents of wastewater. Aeration devices are used to nitrify the wastewater and supply oxygen to the microorganisms. Aeration devices are common in that they discharge air through a membrane, and come in various shapes, including circular, rod-shaped, and plate-shaped.

[0003] The circular diffuser is a round, synthetic resin frame that holds the membrane in place, and comes in an open top and a support type. The rod-shaped diffuser is a long rod-shaped structure that holds the membrane at both ends. The plate-shaped diffuser is a long, square plate-shaped structure that holds the membrane in place by fixing the side portions to the frame, forming it into the plate, or pressing and fixing the upper side edge with numerous bolts.

[0004] Accordingly, the present invention has been developed to solve the problems of conventional plate-type air diffusers, and aims to provide a plate-type air diffuser that allows air to be discharged only through a membrane.

[0005] Other objects of the present invention will become more apparent through the embodiments described below.

[0006] A plate-shaped air diffuser according to one aspect of the present invention comprises a lower plate, an upper plate having an air discharge hole and coupled to the lower plate, a side plate covering both ends when the upper plate and the lower plate are coupled, and a membrane covering the air discharge hole while wrapping the outer surface of the upper plate, the widthwise end of which is pressed by the lower plate, wherein the side plate presses the membrane toward the end of the upper plate.

[0007] The plate-shaped air diffuser according to the present invention may have one or more of the following embodiments. For example, the longitudinal end of the membrane may be folded and inserted into the upper plate.

[0008] The longitudinal end of the membrane can be pressed toward the upper plate by the sealing member.

[0009] An additional sealing reinforcing member is provided to be fastened to the lower plate, and the side plate can be fastened to the sealing reinforcing member at a certain interval.

[0010] An air exhaust pipe may be additionally included to supply air to the air exhaust hole in combination with the upper plate.

[0011] The air discharge pipe is detachably connected to the air intake pipe, and a sealing member may be interposed at the joint portion of the air discharge pipe and the air intake pipe.

[0012] A check valve can be coupled to the air discharge hole. The air discharge hole may have a valve coupling hole, and the check valve may have an insertion portion inserted into the valve coupling hole, a catch formed around the insertion portion and having a larger diameter to be caught in the valve coupling hole, and a shielding surface formed at the end of the insertion portion and covering the valve coupling hole.

[0013] The upper plate has a mating surface that comes into contact with the lower plate, and a number of mating projections are formed in the longitudinal direction on the mating surface, and the widthwise end of the membrane can be caught on the mating projections.

[0014] The upper plate and the lower plate are connected to each other by a connecting member, and the connecting member may include a connecting bolt penetrating the lower plate, a connecting plate connected to the connecting bolt and positioned at the bottom of the lower plate, and a cylindrical support into which the connecting bolt is inserted.

[0015] As discussed above, the problem-solving means of the present invention can be expected to produce various effects, including the following. However, the present invention is not established unless all of the following effects are achieved.

[0016] The present invention can provide a plate-type air diffuser that can increase the air diffusion efficiency by preventing air from being discharged through a path other than a membrane.

[0017] FIG. 1 and FIG. 2 are perspective views illustrating a plate-shaped acid generator according to one embodiment of the present invention.

[0018] Fig. 3 is an exploded perspective view of the plate-shaped acid generator illustrated in Fig. 1.

[0019] Figure 4 is a drawing illustrating a portion of the upper plate.

[0020] Figure 5 is a drawing illustrating a state before a check valve is coupled to an air exhaust hole of an upper plate.

[0021] Figure 6 is a cross-sectional view illustrating a joint of an upper plate, an air exhaust pipe, an air inlet pipe, and a clamp.

[0022] Figures 7 and 8 are exploded perspective views and combined cross-sectional views of the upper plate, sealing reinforcing member, and side plate.

[0023] Figure 9 is a perspective view of the combination of the upper plate, the sealing reinforcing member, and the side plate.

[0024] Figure 10 is a drawing illustrating a state in which a membrane is bonded to an upper plate.

[0025] Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings. In describing with reference to the attached drawings, identical or corresponding components are given the same reference numerals regardless of the drawing symbols, and redundant descriptions thereof will be omitted.

[0026] FIG. 1 and FIG. 2 are perspective views illustrating a plate-shaped air diffuser (100) according to one embodiment of the present invention. FIG. 3 is an exploded perspective view of the plate-shaped air diffuser (100) illustrated in FIG. 1, and FIG. 4 is a view illustrating a portion of the upper plate (110). In addition, FIG. 5 is a view illustrating a state before a check valve (140) is coupled to an air exhaust hole (114) of the upper plate (110), and FIG. 6 is a cross-sectional view illustrating a combination of the upper plate (110), an air exhaust pipe (200), an air inlet pipe (210), and a clamp (220). In addition, FIGS. 7 and 8 are exploded perspective views and combined cross-sectional views of the upper plate (110), the sealing reinforcement member (170), and the side plate (180), and FIG. 9 is a combined perspective view of the upper plate (110), the sealing reinforcement member (170), and the side plate (180).

[0027] For reference, in the plate-shaped acid generator (100) of FIGS. 1 to 9, the illustration of the membrane is omitted.

[0028] Referring to FIGS. 1 to 9, a plate-shaped air diffuser (100) according to one embodiment of the present invention includes an upper plate (110), a lower plate (150), a sealing reinforcing member (170), a side plate (180), a joining member (190), an air discharge pipe (200), an air inlet pipe (210), a clamp (220), a sealing member (230), and a membrane (not shown). The membrane is joined to surround the upper surface of the upper plate (110).

[0029] In the plate-shaped air diffuser (100) according to the present embodiment, air discharged through the air discharge pipe (200) is discharged through the air discharge hole (114) of the upper plate (110) and then passes through the membrane to be discharged to the outside. The membrane covers the air discharge hole (114) and has fine pores so that the air can be discharged to the outside of the plate-shaped air diffuser (100). In addition, the membrane may have elasticity, and due to this, when air is supplied, the membrane slightly swells, and the air is drawn into the space formed between the membrane and the upper surface of the upper plate (110), and then the air is discharged through the entire surface of the membrane.

[0030] The plate-shaped air diffuser (100) according to the present embodiment is characterized in that it can increase the air diffuser efficiency by providing a strong sealing force to prevent the injected air from leaking through the joint portion of the membrane and the upper plate (110).

[0031] The upper plate (110) forms the outer body of the plate-shaped air diffuser (100), and its entire upper part is covered by a membrane. The upper plate (110) has a first surface (112) formed in the center, a second surface (124) formed by bending at both ends of the first surface (112), and a third surface (126) formed by bending at each end of the second surface (124). In this way, the upper plate (110) has a symmetrical structure in which the height gradually decreases from the center toward the edge due to the first surface (112), the second surface (124), and the third surface (126).

[0032] The upper plate (110) can be formed of metal or plastic material.

[0033] The first surface (112) corresponds to the surface formed highest in the upper plate (110), and an air discharge hole (114) is formed in the center of its length. An air discharge pipe (200) is coupled to the lower portion of the air discharge hole (114), and air is discharged through the air discharge hole (114). Referring to Fig. 5, a valve coupling hole (116) is formed in the center of the air discharge hole (114). A catch (146) of a check valve (140) passes through and is caught in the valve coupling hole (116), so that the check valve (140) is positioned above the air discharge hole (114) and does not come off despite the inflow of air.

[0034] A plurality of exhaust pipe connecting holes (118) are formed around the air exhaust hole (114). A fastening member (not shown), such as a bolt, is inserted into the exhaust pipe connecting hole (118) and connected to the upper flange (202) of the air exhaust pipe (200). By connecting the fastening member and the upper flange (202), the air exhaust pipe (200) can be firmly connected to the upper plate (110).

[0035] A plurality of fastening holes (120) are formed in the longitudinal direction on the first surface (112). A fastening bolt (192) of a fastening member (190) is screwed into the fastening holes (120), thereby causing the upper plate (110) and the lower plate (150) to be mutually fastened.

[0036] The upper plate (110) has a pair of left and right joining surfaces (128). The joining surfaces (128) are formed by being bent inward, and can come into surface contact with the lower plate (150) when the upper plate (110) and the lower plate (150) are joined. In addition, a plurality of joining protrusions (130) are formed at regular intervals on the joining surfaces (128). The widthwise ends of the membrane are caught on the joining protrusions (130) (see FIG. 10), and as a result, the membrane can be stably joined to the upper plate (110).

[0037] The widthwise end of the membrane in contact with the bonding surface (128) is pressurized while making surface contact with the lower plate (150), thereby preventing air from leaking through a path other than the membrane in the space formed between the membrane and the upper plate (110).

[0038] The connecting protrusion (130) may have any shape as long as it can penetrate the membrane. For example, the connecting protrusion (130) may have a shape tapered toward the end to facilitate penetration of the membrane. In addition, the number and spacing of the connecting protrusions (130) may vary depending on the material, thickness, and length of the membrane.

[0039] The check valve (140) covers the air discharge hole (114), and when air is injected, it opens elastically due to the pressure, thereby allowing the air to be discharged. In addition, when air is not injected, the air discharge hole (114) is closed. The check valve (140) is provided with a shielding surface (142), an insertion portion (144), and a catch (146).

[0040] The shielding surface (142) may have a shape corresponding to the air exhaust hole (114) and may be manufactured from a material having elastic restoring force (e.g., silicone, plastic resin, etc.). Accordingly, when an external force is applied, it deforms to open the air exhaust hole (114), and when an external force is not applied, it returns to its original shape to close the air exhaust hole (114). In addition, the shielding surface (142) may be formed to be larger than the diameter of the air exhaust hole (114) so ​​as to completely cover the air exhaust hole (114).

[0041] An insertion portion (144) protrudes downward from the lower portion of the shielding surface (142). The insertion portion (144) is a portion inserted into a valve engaging hole (116) formed in an air discharge hole (114), and a catch (146) having a larger diameter is formed around the insertion portion. The catch (146) has elasticity so that it can pass through the valve engaging hole (116), and prevents the insertion portion (144) from easily falling out after passing through the valve engaging hole (116).

[0042] The check valve (140) can be replaced as needed or due to aging.

[0043] The lower plate (150) has the same length and width as the upper plate (110). In addition, the lower plate (150) has a structure in which a pair of lower rails (152) are formed longitudinally on a flat surface. The lower rails (152) are formed to protrude from the lower plate (150), thereby improving the strength of the lower plate (150). In addition, side surfaces (154) that protrude vertically upward are formed at both ends of the lower plate (150). The upper plate (110) is accommodated on the inside of the side surfaces (154).

[0044] A plurality of discharge holes (156) may be formed in the lower plate (150). Although the plate-shaped air diffuser (100) according to the present embodiment is exemplified as having rectangular discharge holes (156), the present invention is not limited by the shape, arrangement interval, and number of the discharge holes (156). The discharge holes (156) may correspond to passages through which water that has entered the space formed between the upper plate (110) and the lower plate (150) may be discharged.

[0045] An insertion hole (158) is formed in the center of the width and length directions of the lower plate (150). An air discharge pipe (200) is inserted into the insertion hole (158). The upper portion of the air discharge pipe (200) is inserted into the space formed between the upper plate (110) and the lower plate (150) through the insertion hole (158), and the lower portion protrudes outward from the lower plate (150) and is detachably connected to the air inlet pipe (210) by a clamp (220).

[0046] The diameter of the insertion hole (158) can be formed to a size that allows the upper flange (202) of the air discharge pipe (200) to pass through. Accordingly, the air discharge pipe (200) can be easily removed from the upper plate (110) by separating the air inlet pipe (210) from the air discharge pipe (200) and removing the fastening member fastened to the discharge pipe joining hole (118).

[0047] The upper plate (110) and the lower plate (150) are mutually connected by a plurality of connecting members (190). Referring to FIGS. 7 and 8, the connecting members (190) include connecting bolts (192), connecting plates (194), and cylindrical supports (196).

[0048] The cylindrical support (196) has a hollow cylindrical shape and has open structures at both the top and bottom. As a result, the connecting bolt (192) can penetrate the cylindrical support (196). In addition, the cylindrical support (196) has a height equal to the gap between the upper plate (110) and the lower plate (150), so that the height of the upper plate (110) relative to the lower plate (150) is stably maintained.

[0049] The joining plate (194) has a flat plate shape and is in close contact with the lower surface of the lower plate (150). That is, the joining bolt (192) penetrates the joining plate (194) and the cylindrical support (196) and is screw-connected to the fastening hole (120) of the upper plate (110), and the joining plate (194) is in close contact with the lower surface of the lower plate (150) by the joining bolt (192).

[0050] Referring to FIGS. 3, 7, and 10, the longitudinal end of the membrane is coupled to the inside of the upper plate (110) by a sealing member (230). The membrane may have a longer length than the upper plate (110), and the longitudinal end of the membrane exceeding the length of the upper plate (110) is folded into the inside of the upper plate (110). In addition, the longitudinal end of the membrane may be fixed by a sealing member (230) having the same shape and size as the upper portion of the upper plate (110).

[0051] The sealing member (230) can serve to increase the side sealing force of the plate-shaped air diffuser (100) by pressing upward from below the longitudinal end of the membrane folded inside the upper frame. In addition, the sealing member (230) facilitates the joining of the sealing reinforcing member (170) and the side plate (180) by finishing the longitudinal end of the membrane. The sealing member (230) can be made of metal or plastic resin, etc., and thus can have elasticity, and thus can be elastically joined to the inside of the upper plate (110).

[0052] Referring to FIGS. 3, 7, 8, and 9, a sealing reinforcing member (170) and a side plate (180) can be combined on the side of the plate-shaped air diffuser (100). The sealing reinforcing member (170) and the side plate (180) serve to increase the side sealing force of the plate-shaped air diffuser (100).

[0053] The sealing reinforcement member (170) is fixed by being screwed to both ends of the lower plate (150). That is, the sealing reinforcement member (170) is firmly connected to the lower plate (150) by the first fastening means (174) that penetrates the lower plate (150). In addition, the sealing reinforcement member (170) has two connecting grooves (172), and the lower rail (152) is inserted into the connecting grooves (172). The sealing reinforcement member (170) is firmly connected to the lower plate (150) by the connecting structure of the connecting grooves (172) and the lower rail (152).

[0054] The sealing reinforcing member (170) has an upper shape corresponding to the upper plate (110). As a result, the sealing reinforcing member (170) is firmly connected between the upper plate (110) and the lower plate (150) without shaking.

[0055] The sealing reinforcement member (170) is connected to the side plate (180) by a second fastening means (176). The second fastening means (176) may correspond to a bolt, and the second fastening means (176) passing through the side plate (180) is screw-connected to the sealing reinforcement member (170). As a result, the sealing reinforcement member (170) can firmly support the side plate (180) at a certain interval.

[0056] The side plate (180) presses the membrane, whose longitudinal end is folded into the inside of the upper plate (110) and positioned at the end of the upper plate (110), toward the sealing reinforcing member (170). As a result, the side plate (180) serves to increase the side sealing force of the plate-shaped air diffuser (100).

[0057] The side plate (180) may also have the same upper shape as the upper plate (110). Therefore, when the side plate (180) is coupled, the side plate (180) may not protrude from the upper plate (110). Of course, the side plate (180) may protrude slightly compared to the upper plate (110), and thus the side plate (180) may effectively press the membrane located at the end of the upper plate (110).

[0058] Referring to Fig. 6, the air discharge pipe (200) and the air inlet pipe (210) are mutually connected by a clamp (220). Therefore, by disassembling the clamp (220), the air discharge pipe (200) and the air inlet pipe (210) can be mutually separated. The upper part of the air discharge pipe (200) communicates with the air discharge hole (114) to discharge air in the direction of the membrane. In addition, the lower part of the air discharge pipe (200) is detachably connected to the air inlet pipe (210).

[0059] A disk-shaped upper flange (202) is attached to the upper end of the air discharge pipe (200). The upper flange (202) may be formed integrally with the air discharge pipe (200) or may be firmly attached by welding or the like. In addition, the upper flange (202) is firmly attached to the upper plate (110) by a bolt inserted into the discharge pipe attachment hole (118) after coming into contact with the lower surface of the upper plate (110).

[0060] A lower flange (204) is formed at the lower end of the air discharge pipe (200) for connection with the air inlet pipe (210). The lower flange (204) may be formed integrally with the air discharge pipe (200) or may be formed as a separate member and then connected.

[0061] The air inlet pipe (210) may be provided with a coupling flange (212) for coupling with the air exhaust pipe (200). A sealing member (222) may be inserted between the coupling flange (212) and the lower flange (204). The sealing member (222) may correspond to an O-ring-shaped rubber packing coupled to a retainer (224), and is compressed by a clamp (220) between the coupling flange (212) and the lower flange (204) to provide a sealing force.

[0062] The retainer (224) has a ring-shaped body, and the body has a constant length so that it is inserted into the lower end of the air discharge pipe (200) and the upper end of the air inlet pipe (210). In addition, a sealing groove (226) into which a sealing member (222) is inserted is formed around the retainer (224).

[0063] The clamp (220) presses the lower flange (204) and the coupling flange (212) together by interposing them therebetween. By means of the clamp (220), the air discharge pipe (200) and the air inlet pipe (210) are mutually joined together, thereby compressing the sealing member (220), thereby preventing air from leaking.

[0064] By releasing the clamp (220), the air inlet pipe (210) can be separated from the air discharge pipe (200). Therefore, when disassembling the upper plate (110) and the lower plate (150) for maintenance of the membrane, the lower part of the air inlet pipe (210) and the clamp (220) can be disassembled to disassemble the lower plate (150).

[0065] Clamps (220) can be used in various types and configurations.

[0066] Although the present invention has been described above with reference to one embodiment, it will be understood by those skilled in the art that various modifications and changes can be made to the present invention without departing from the spirit and scope of the present invention as set forth in the claims below.

Claims

1. Lower plate; An upper plate having an air exhaust hole and coupled to the lower plate; A side plate covering both ends when the upper plate and lower plate are joined; A membrane is included that covers the air exhaust hole while wrapping the outer surface of the upper plate, and the widthwise end of the membrane is pressed by the lower plate. The above side plate is a plate-shaped air diffuser that presses the membrane toward the end of the upper plate.

2. In paragraph 1, A plate-shaped diffuser in which the longitudinal end of the above membrane is folded and inserted into the upper plate.

3. In paragraph 2, A plate-shaped air diffuser in which the longitudinal end of the above membrane is pressed toward the upper plate by a sealing member.

4. In paragraph 1, In addition, a sealing reinforcing member is provided that is fastened to the lower plate, The above side plate is a plate-shaped air diffuser device that is fastened to the above sealing reinforcement member at a certain interval.

5. In paragraph 1, A plate-shaped air diffuser device additionally including an air exhaust pipe that supplies air to the air exhaust hole by being combined with the upper plate.

6. In paragraph 5, A plate-shaped air diffuser device in which the air discharge pipe is detachably connected to the air intake pipe, and a sealing member is interposed at the connection portion between the air discharge pipe and the air intake pipe.

7. In paragraph 1, A plate-shaped air diffuser device having a check valve attached to the above air discharge hole.

8. In paragraph 7, The above air exhaust hole has a valve coupling hole, The above check valve is a plate-shaped air diffuser device having an insertion part inserted into the valve coupling hole, a catch formed around the insertion part and having a larger diameter to be caught in the valve coupling hole, and a shielding surface formed at the end of the insertion part and covering the valve coupling hole.

9. In paragraph 1, The upper plate has a joining surface that contacts the lower plate, A number of bonding protrusions are formed in the longitudinal direction on the above bonding surface, A plate-shaped air diffuser in which the widthwise end of the above membrane is caught on the above-mentioned connecting projection.

10. In paragraph 1, The upper plate and the lower plate are mutually connected by a connecting member, The above-mentioned joining member is a plate-shaped air diffuser device including a joining bolt penetrating the lower plate, a joining plate joined to the joining bolt and positioned at the lower portion of the lower plate, and a cylindrical support into which the joining bolt is inserted.

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