Supporting and fixing structure for membrane stack

Abstract

The utility model provides a supporting and fixing structure for a membrane stack, which is used for supporting a flexible membrane and a water collecting pipe and fixing the flexible membrane and a water collecting spacing plate, and comprises an outer clamping plate, an inner clamping plate and a plurality of fixing rods for connecting the outer clamping plate and the inner clamping plate, the inner clamping plate is provided with a water collecting pipe hole allowing the water collecting pipe to penetrate through, one end of the water collecting pipe penetrates through the water collecting pipe hole to be connected with a water collecting connector, the other end of the water collecting pipe is connected with the outer clamping plate, and the multiple fixing rods penetrate through the flexible diaphragm and the water collecting partition plate respectively to be connected with the outer clamping plate and the inner clamping plate at the two ends. According to the supporting and fixing structure for the membrane stack, supporting of the front side and the rear side is achieved through the inner clamping plate and the outer clamping plate, the fixing rods penetrate through the flexible membranes and the water collecting partition plates from the two sides, reliable fixing of the two sides is achieved, and the reliability of supporting and fixing is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of membrane bioreactors, and in particular relates to a supporting and fixing structure for a membrane stack. Background Art

[0002] The submerged membrane bioreactor (MBR) is an organic combination of membrane separation technology and biotechnology. It uses ultrafiltration or microfiltration membrane separation technology to replace the secondary sedimentation tank and conventional filtration unit of the traditional activated sludge method, so that the hydraulic retention time (HRT) and sludge age (STR) are completely separated. This is an efficient and economical sewage resource technology with efficient solid-liquid separation capabilities. Not only is the effluent water quality good, the suspended solids and turbidity are close to zero, but it can also intercept biological pollutants such as Escherichia coli. And because the effluent water quality is significantly better than the traditional sewage treatment process, the treated water can be directly reused, and it has a wide range of application prospects.

[0003] The existing standard modular membrane module has a stainless steel bracket and two membrane stacks installed therein in an integrated manner. Card plates are fixedly installed on the front and rear sides of the stainless steel bracket. A card slot is provided on the surface of each card plate. The diaphragm of the membrane stack is adapted to the card slot, so that the membrane stack is plugged between multiple card plates through the card slot. The diaphragm may bulge during water production or chemical cleaning, causing the diaphragm to move, and the reliability of the plug-in fixation of the diaphragm and the card plate is insufficient.

[0004] Therefore, it is necessary to provide a supporting and fixing structure for a membrane stack to solve or at least partially solve the above problems. Utility Model Content

[0005] The utility model provides a supporting and fixing structure for a membrane stack, wherein inner and outer clamping plates realize the support of the front and rear sides, and a plurality of fixing rods pass through the flexible membrane and the water collecting spacer on both sides to realize the reliable fixation of the two sides and improve the reliability of the supporting and fixing.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A supporting and fixing structure for a membrane stack, used to provide support for a flexible diaphragm and a water collecting pipe and to fix the flexible diaphragm and the water collecting spacer, comprising an outer plywood, an inner plywood and a plurality of fixing rods connecting the outer plywood and the inner plywood, the inner plywood being provided with a water collecting pipe hole allowing the water collecting pipe to pass through, one end of the water collecting pipe passing through the water collecting pipe hole to be connected to a water collecting joint, and the other end being connected to the outer plywood, a plurality of fixing rods respectively passing through the flexible diaphragm and the water collecting spacer to connect the outer plywood and the inner plywood at both ends.

[0008] Optionally, a positioning plate is provided at one end of the water collecting pipe connected to the water collecting joint, a positioning protrusion is provided on the positioning plate, and a positioning groove matching the positioning plate is provided on the outer side of the inner clamping plate. When the water collecting pipe is installed to the inner clamping plate, the positioning plate is provided in the positioning groove to limit the circumferential position of the water collecting pipe.

[0009] Optionally, the inner clamping plate is provided with a first fixing hole allowing the fixing rod to pass through, and a nut hole is provided at the first fixing hole on the outside of the inner clamping plate, one end of the fixing rod is connected to a fixing nut, and the other end passes through the first fixing hole, so that the fixing nut is inserted into the nut hole to position the fixing rod.

[0010] Optionally, a plurality of the water collecting spacers are arranged in sequence, a plurality of the flexible diaphragms are respectively arranged between adjacent water collecting spacers, the flexible diaphragms and the water collecting spacers are respectively provided with through holes and fixing rod holes for allowing the fixing rod to pass through, and the outer periphery of the fixing rod hole of the water collecting spacer is provided with a through hole boss; the outer clamping plate is provided with a second fixing hole allowing the fixing rod to pass through, and the second fixing hole on the inner side of the outer clamping plate is provided with a mounting hole matching the through hole boss, and the through hole boss of the water collecting spacer arranged adjacent to the outer clamping plate is arranged in the mounting hole.

[0011] Optionally, a nut screw-in hole is provided at the second fixing hole on the outside of the outer clamping plate, the end of the fixing rod passes through the second fixing hole, and a locking nut provided on the outside of the outer clamping plate is screwed into the nut screw-in hole to connect the fixing rod to fix the outer clamping plate.

[0012] Optionally, a receiving hole for receiving a hexagonal nut is provided on the inner side of the outer clamping plate; the hexagonal nut is connected to the end of the water collecting pipe away from the water collecting joint, and when the outer clamping plate is connected to the fixing rod, the hexagonal nut is arranged in the receiving hole and fixed.

[0013] Compared with the prior art, the technical solution of the utility model has beneficial effects.

[0014] For example, the utility model provides a support and fixing structure for the membrane stack, in which the inner and outer clamping plates realize the support of the front and rear sides, and multiple fixing rods pass through the flexible membrane and the water collecting spacer on the left and right sides to realize reliable fixation of the left and right sides, thereby improving the reliability of the support and fixation.

[0015] For another example, the support and fixing structure for the membrane stack provided by the utility model has a nut hole on the outer side of the inner clamping plate to accommodate and position the fixing nut, and a nut screw-in hole on the outer side of the outer clamping plate to accommodate the locking nut, so that there is no protrusion on the outer side of the inner clamping plate and the outer clamping plate, and the surface is smooth, which is conducive to the subsequent installation of the membrane stack. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the installation of a supporting and fixing structure for a membrane stack in an embodiment of the utility model;

[0017] Figure 2 This is a top view of the installation of the supporting and fixing structure for the membrane stack in the embodiment of the utility model;

[0018] Figure 3 This is a schematic diagram of the inner splint structure in the embodiment of the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the inner clamping plate at another angle in the embodiment of the utility model;

[0020] Figure 5 This is a schematic diagram of the internal and external clamping plate structure in an embodiment of the utility model;

[0021] Figure 6 It is a schematic structural diagram of the inner and outer clamping plates at another angle in an embodiment of the utility model.

[0022] Description of reference numerals:

[0023] 11. Flexible diaphragm;

[0024] 211, water collecting pipe; 212, water collecting joint;

[0025] 22. water collecting spacer; 226. through-hole boss;

[0026] 31, inner clamping plate; 311, water collecting pipe hole; 312, positioning groove; 313, first fixing hole; 314, nut hole;

[0027] 32, outer clamping plate; 321, second fixing hole; 322, mounting hole; 323, nut screwing hole; 324, receiving hole;

[0028] 33. Fixed rod. DETAILED DESCRIPTION

[0029] In order to make the purpose, features and beneficial effects of the present invention more obvious and understandable, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. It is understood that the specific embodiments described below are only used to explain the present invention, rather than to limit the present invention. In addition, the same or similar reference numerals may be used in the drawings to refer to the same or similar elements in different embodiments, and the description of the same or similar elements in different embodiments and the description of the prior art elements, features, effects, etc. may be omitted.

[0030] Figure 1 This is a schematic diagram of the installation of a supporting and fixing structure for a membrane stack in an embodiment of the utility model; Figure 2This is a top view of the installation of the supporting and fixing structure for the membrane stack in the embodiment of the utility model; Figure 3 This is a schematic diagram of the inner splint structure in the embodiment of the utility model; Figure 4 This is a schematic diagram of the structure of the inner clamping plate at another angle in the embodiment of the utility model; Figure 5 This is a schematic diagram of the internal and external clamping plate structure in an embodiment of the utility model; Figure 6 It is a schematic structural diagram of the inner and outer clamping plates at another angle in an embodiment of the utility model.

[0031] Reference Figure 1-Figure 6 , an embodiment of the utility model provides a supporting and fixing structure for a membrane stack.

[0032] Specifically, the supporting and fixing structure for the membrane stack is used to provide support for the flexible diaphragm 11 and the water collecting pipe 211 and to fix the flexible diaphragm 11 and the water collecting spacer 22. The water collecting spacer 22 connects the flexible diaphragm 11 and the water collecting pipe 211 to collect the water produced by the flexible diaphragm 11. The supporting and fixing structure includes an outer clamping plate 32, an inner clamping plate 31 and a plurality of fixing rods 33 connecting the outer clamping plate 32 and the inner clamping plate 31. The inner clamping plate 31 is provided with a water collecting pipe hole 311 allowing the water collecting pipe 211 to pass through. One end of the water collecting pipe 211 passes through the water collecting pipe hole 311 to connect to the water collecting joint 212, and the other end is connected to the outer clamping plate 32. The plurality of fixing rods 33 respectively pass through the flexible diaphragm 11 and the water collecting spacer 22 to connect the outer clamping plate 32 and the inner clamping plate 31 at both ends.

[0033] In some embodiments, a positioning plate (not shown) is provided at one end of the water collecting pipe 211 connected to the water collecting joint 212, and a positioning protrusion is provided on the positioning plate. A positioning groove 312 matching the positioning plate is provided on the outer side of the inner clamping plate 31. When the water collecting pipe 211 is installed to the inner clamping plate 31, the positioning plate is provided in the positioning groove 312 to limit the circumferential position of the water collecting pipe 211.

[0034] In some embodiments, the inner clamping plate 31 is provided with a first fixing hole 313 allowing the fixing rod 33 to pass through, and a nut hole 314 is provided at the first fixing hole 313 on the outer side of the inner clamping plate 31. One end of the fixing rod 33 is connected to a fixing nut (not shown), and the other end passes through the first fixing hole 313, so that the fixing nut is inserted into the nut hole 314 to position the fixing rod 33; while the fixing rod 33 is positioned, the nut hole 314 accommodates the fixing nut, so that there is no protrusion on the outer side of the inner clamping plate 31 and the surface is smooth, which is conducive to the subsequent installation of the membrane stack.

[0035] In some embodiments, a plurality of water collecting spacers 22 are arranged in sequence, a plurality of flexible diaphragms 11 are respectively arranged between adjacent water collecting spacers 22, the flexible diaphragms 11 and the water collecting spacers 22 are respectively provided with through holes and fixing rod holes for allowing the fixing rod 33 to pass through, and the outer periphery of the fixing rod hole of the water collecting spacer 22 is provided with a through hole boss 226; the outer clamp plate 32 is provided with a second fixing hole 321 allowing the fixing rod 33 to pass through, and the second fixing hole 321 on the inner side of the outer clamp plate 32 is provided with an installation hole 322 matching the through hole boss 226, and the through hole boss 226 of the water collecting spacer 22 arranged adjacent to the outer clamp plate 32 is arranged in the installation hole 322 to fix the water collecting spacer 22 arranged adjacent to the outer clamp plate 32.

[0036] In some embodiments, a nut screw-in hole 323 is provided at the second fixing hole 321 on the outside of the outer clamp plate 32, and the end of the fixing rod 33 passes through the second fixing hole 321, and a locking nut (not shown) provided on the outside of the outer clamp plate 32 is screwed into the nut screw-in hole 323 to connect the fixing rod 33 to fix the outer clamp plate 32; a nut screw-in hole 323 is provided on the outside of the outer clamp plate 32 to accommodate the locking nut, so that the outside of the outer clamp plate 32 has no protrusions and the surface is smooth, which is conducive to the subsequent installation of the membrane stack.

[0037] In some embodiments, a receiving hole 324 for accommodating a hexagonal nut is provided on the inner side of the outer clamping plate 32; the hexagonal nut (not shown) is connected to the end of the water collecting pipe 211 away from the water collecting joint 212, and when the outer clamping plate 32 is connected to the fixing rod 33, the hexagonal nut is fixed in the receiving hole 324 to fix the end of the water collecting pipe 211 away from the water collecting joint 212, so that the structure is more solid.

[0038] In summary, the support and fixing structure for the membrane stack provided by the utility model realizes the support of the front and rear sides by the inner and outer clamping plates, and multiple fixing rods 33 pass through the flexible membrane 11 and the water collecting spacer 22 on the left and right sides to realize reliable fixation of the left and right sides, thereby improving the reliability of the support and fixation.

[0039] Furthermore, the supporting and fixing structure for the membrane stack provided by the utility model has a nut hole 314 provided on the outer side of the inner clamping plate 31 to accommodate and position the fixing nut, and a nut screw-in hole 323 provided on the outer side of the outer clamping plate 32 to accommodate the locking nut, so that the outer sides of the inner clamping plate 31 and the outer clamping plate 32 have no protrusions and the surface is smooth, which is conducive to the subsequent installation of the membrane stack.

[0040] Although specific embodiments have been described above, these embodiments are not intended to limit the scope of the present disclosure, even when only a single embodiment is described with respect to specific features. The feature examples provided in the present disclosure are intended to be illustrative rather than limiting, unless otherwise stated. In specific implementations, the technical features of one or more dependent claims may be combined with the technical features of the independent claim, based on actual needs and where technically feasible, and may be derived from the technical features of the corresponding independent claim in any appropriate manner rather than simply through the specific combination listed in the claims.

[0041] Although the utility model is disclosed as above, the utility model is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the utility model. Therefore, the protection scope of the utility model shall be subject to the scope defined by the claims.

Claims

1. A supporting and fixing structure for a membrane stack, used to provide support for a flexible membrane and a water collecting pipe and fix the flexible membrane and the water collecting spacer, characterized in that: It includes an outer plywood, an inner plywood and a plurality of fixing rods connecting the outer plywood and the inner plywood, the inner plywood is provided with a water collecting pipe hole allowing the water collecting pipe to pass through, one end of the water collecting pipe passes through the water collecting pipe hole to connect to the water collecting joint, and the other end is connected to the outer plywood, and the plurality of fixing rods respectively pass through the flexible diaphragm and the water collecting spacer to connect the outer plywood and the inner plywood at both ends.

2. The supporting and fixing structure for a membrane stack according to claim 1, characterized in that: A positioning piece is provided at one end of the water collecting pipe connected to the water collecting joint, and a positioning protrusion is provided on the positioning piece. A positioning groove matching the positioning piece is provided on the outer side of the inner clamping plate. When the water collecting pipe is installed to the inner clamping plate, the positioning piece is provided in the positioning groove to limit the circumferential position of the water collecting pipe.

3. The supporting and fixing structure for a membrane stack according to claim 1, characterized in that: The inner clamping plate is provided with a first fixing hole allowing the fixing rod to pass through, and a nut hole is provided at the first fixing hole on the outer side of the inner clamping plate. One end of the fixing rod is connected to a fixing nut, and the other end passes through the first fixing hole, so that the fixing nut is inserted into the nut hole to position the fixing rod.

4. The supporting and fixing structure for a membrane stack according to claim 1, characterized in that: A plurality of water-collecting spacers are arranged in sequence, and a plurality of flexible diaphragms are respectively arranged between adjacent water-collecting spacers. The flexible diaphragms and the water-collecting spacers are respectively provided with through holes and fixing rod holes for allowing the fixing rod to pass through, and the outer periphery of the fixing rod hole of the water-collecting spacer is provided with a through-hole boss; the outer clamping plate is provided with a second fixing hole for allowing the fixing rod to pass through, and the second fixing hole on the inner side of the outer clamping plate is provided with a mounting hole matching the through-hole boss, and the through-hole boss of the water-collecting spacer arranged adjacent to the outer clamping plate is arranged in the mounting hole.

5. The supporting and fixing structure for a membrane stack according to claim 4, characterized in that: A nut screw-in hole is provided at the second fixing hole on the outer side of the outer clamping plate, the end of the fixing rod passes through the second fixing hole, and a locking nut provided on the outer side of the outer clamping plate is screwed into the nut screw-in hole to connect the fixing rod to fix the outer clamping plate.

6. The supporting and fixing structure for a membrane stack according to claim 1, characterized in that: The inner side of the outer clamping plate is provided with a receiving hole for accommodating a hexagonal nut; the hexagonal nut is connected to the end of the water collecting pipe away from the water collecting joint, and when the outer clamping plate is connected to the fixing rod, the hexagonal nut is arranged in the receiving hole and fixed.

Images