A MBR membrane rack device

Abstract

The application provides a MBR membrane frame device, which comprises a square frame, a plurality of MBR curtain membrane assemblies arranged on the square frame, and an aeration assembly arranged below the MBR curtain membrane assemblies. The square frame is provided with two water collecting pipes and two first cross beams. The MBR curtain membrane assembly comprises two water production pipes arranged above and below, and an MBR membrane curtain connected between the two water production pipes. The water production pipe is open at one end and closed at the other end. The open end of the water production pipe is communicated with the water collecting pipe at the corresponding position through a water production joint. The closed end of the water production pipe is installed on the first cross beam at the corresponding position through a first anti-rotation fixing structure. In the application, the water production pipe in the MBR membrane assembly is fixed on the square frame through the first anti-rotation fixing structure, which effectively prevents the water production pipe from rotating in the circumferential direction and prevents the MBR membrane from being wound on the water production pipe due to shaking, thereby protecting the MBR membrane.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of MBR membrane rack, in particular to a kind of MBR membrane rack device. BACKGROUND

[0002] MBR is a new type of high-efficiency sewage treatment process combining high-efficiency membrane separation technology with traditional activated sludge process, and MBR system is a hollow fiber ultrafiltration membrane as the center processing unit. MBR membrane rack assembly is placed in the aeration tank, and the treatment liquid passes through the membrane surface at a certain flow rate. Water molecules pass through the membrane under the driving of a certain suction force, while suspended solids, colloids, macromolecular organic matter and microorganisms are intercepted, so as to achieve the purpose of purification and separation. In combination with the oxygen supply of aeration system, the biological reaction efficiency of MBR membrane is improved.

[0003] However, the existing MBR membrane rack device still has some shortcomings in actual use, such as:

[0004] 1. The membrane connecting assembly of the existing MBR membrane rack is exposed outside the membrane rack, and is easily damaged by collision during transportation and frequent lifting out for maintenance

[0005] 2. The existing MBR membrane rack assembly has a complex structure, and each membrane needs to be provided with corresponding fasteners, so that the installation of MBR membrane on the membrane rack is more cumbersome, not only time-consuming and laborious, but also the fasteners are too tight or too loose during the installation of MBR membrane by workers, causing local stress concentration or ineffective fastening of the assembly, and the membrane sheet is easy to fall off or be damaged.

[0006] 3. In the existing MBR membrane rack, the two ends of MBR membrane are mostly fastened by friction between the two ends and the membrane connecting assembly, which cannot guarantee that the circumference of the water production pipe at the two ends of MBR membrane is completely limited, and the membrane will physically shake during operation. After a long time, the membrane wire will roll on the water production pipe, causing the membrane surface tension to be too large, and the membrane wire to be broken, resulting in membrane failure.

[0007] 4. The existing MBR membrane rack needs to design a special fastening mechanism for fastening, and the fastening does not utilize the characteristics of the section steel used in the membrane rack itself, so the cost is high.

[0008] Therefore, it is urgent to provide a membrane rack device which is convenient to assemble and disassemble, low in cost and can effectively fix the MBR membrane rack assembly. SUMMARY

[0009] Therefore, the present application aims to provide a kind of MBR membrane rack device, to realize the effective fixation of MBR membrane rack assembly.

[0010] To achieve the above-mentioned purpose, the technical scheme of the present application is as follows:

[0011] A kind of MBR membrane rack device, comprising:

[0012] The square frame is provided with two water collecting pipes on one side and on the upper and lower sides, and the two water collecting pipes are connected to water outlet through a water collecting main pipe.

[0013] The MBR curtain type membrane assembly is provided in the square frame, each of the MBR curtain type membrane assembly comprises two water outlet pipes arranged on the upper and lower sides, and an MBR membrane curtain connected between the two water outlet pipes, the water outlet pipe is open at one end and closed at the other end, the open end of the water outlet pipe is communicated with the corresponding water collecting pipe through a water outlet joint, and the closed end of the water outlet pipe is installed on the first cross beam at the corresponding position through the first anti-rotation fixing structure.

[0014] The aeration assembly comprises an air inlet and a plurality of aeration pipes arranged below the MBR curtain type membrane assembly, the aeration pipe is open at one end and closed at the other end, one side of the square frame is provided with a corresponding air supply cross pipe of the aeration assembly, and the other side is provided with a second cross beam, the open end of the aeration pipe is communicated with the air supply cross pipe, the air supply cross pipe is communicated with the air inlet through an air supply main pipe, and the closed end of the aeration pipe is installed on the second cross beam.

[0015] Further, the aeration pipe is installed on the second cross beam through the second anti-rotation fixing structure, and the second anti-rotation fixing structure comprises a second channel steel, a second outer lock head and a second inner lock head connected with the second outer lock head through a spline structure.

[0016] The second channel steel is installed on the outer side of the second cross beam.

[0017] The second outer lock head is movably arranged on the second cross beam, the end of the aeration pipe extends into the second outer lock head, the aeration pipe is provided with a circular groove at the end, the outer end of the second inner lock head is inserted into the circular groove and connected with the circular groove through the spline structure, the outer end of the second outer lock head is inserted into the second channel steel, the second outer lock head is provided with a limiting side surface corresponding to the groove wall of the second channel steel, and the limiting side surface and the groove wall of the second channel steel are in close contact to form a wedge-shaped locking structure, and the second channel steel tightly presses the second outer lock head to fix the aeration pipe.

[0018] Further, the outer end surface of the first outer lock head is provided with a limiting boss, and the web of the first channel steel is provided with a corresponding limiting hole.

[0019] Further, the outer side surface of the first cross beam is provided with a groove, and the first channel steel covers and seals the first outer lock head in the groove of the first cross beam.

[0020] Further, the first anti-rotation fixing structure comprises a first channel steel, a first outer lock head and a first inner lock head connected with the first outer lock head through a spline structure.

[0021] The first channel steel is installed on the outer side of the first cross beam.

[0022] The first outer lock head is movably installed on the first cross beam, the water production pipe is provided with a plurality of first insertion slots at the end thereof and extends into the first outer lock head, the first inner lock head is provided with a plurality of plugs at the end thereof, the first insertion slots and the plugs are inserted together, the outer end of the first outer lock head is provided with a limiting side surface matched with the groove wall of the first channel steel, the outer end of the first outer lock head is inserted into the first channel steel, the limiting side surface and the groove wall of the first channel steel are in close contact to form a wedge-shaped locking structure, and the first channel steel tightly presses the first outer lock head to fix the water production pipe.

[0023] Further, the water production joint comprises coaxially and closely arranged installation part and water production part, the diameter of the installation part is larger than that of the water production part, the large end surface of the installation part is provided with a water production hole, the water production hole is a blind hole, the hole bottom of the water production hole extends into the water production part and is provided with a fixing hole for installation, and a plurality of water outlet holes are arranged at the end position of the hole wall of the water production hole.

[0024] The water production part is inserted into the water collecting pipe and is fixed by bolts, the water production joint is communicated with the water collecting pipe through the water outlet hole, and the water production pipe is inserted into the water production hole and is sealed with the sealing ring at the end of the water production pipe.

[0025] Further, the square frame is further provided with an aeration box assembly between the aeration pipe and the MBR curtain type membrane assembly, the aeration box assembly comprises an aeration outer box, the aeration outer box is provided with a plurality of aeration chambers, the aeration chambers are downwardly provided with openings opposite to the aeration pipe, air passages are vertically arranged in the aeration chambers and extend out of the top surface of the aeration chamber, an aeration inner box is fixedly arranged in the aeration chamber, the top of the aeration inner box is open, air spaces are respectively arranged between the aeration inner box and the side surface and the top surface of the aeration chamber, and the lower end of the air passage extends into the aeration inner box and is spaced apart from the bottom of the aeration inner box.

[0026] Further, the bottom of the aeration inner box is obliquely arranged, a slag discharge port is arranged at the low end of the bottom, and the slag discharge port is arranged away from the air passage and the aeration pipe.

[0027] Further, the aeration outer box is a rectangular box structure and a plurality of aeration outer boxes are arranged side by side, the plurality of aeration outer boxes are clamped and fixed by two square frames arranged one above the other to form an installation main body, the installation main body is placed on two support beams correspondingly arranged on the square frame, one of the support beams is provided with a stop block, the other support beam is provided with a quick lock clamp, the installation main body is limited in the horizontal X direction by the quick lock clamp and the stop block, and the vertical Y axis direction of the installation main body is limited by the vertical column of the square frame 1 arranged at both ends of the support beam.

[0028] Further, the aeration holes of the aeration pipe are arranged at the left and right positions of the bottom of the pipe wall.

[0029] Further, the aeration pipe is provided with a pressure relief pipe downwardly arranged at the position close to the closed end.

[0030] Compared with the prior art, the MBR membrane rack device has the following advantages:

[0031] (1) In the present application, the water production pipe in the MBR membrane assembly is fixed to the square frame by the first anti-rotation fixing structure, effectively preventing the water production pipe from rotating in the circumferential direction and preventing shaking from causing the MBR membrane to roll on the water production pipe, thereby protecting the MBR membrane.

[0032] (2) In the present application, the inner groove of the first channel steel is matched with the first outer lock head of the MBR curtain membrane assembly to form the first anti-rotation fixing structure, and only a small number of bolts are used to fasten the channel steel and the frame, thereby fixing the MBR curtain membrane assembly, improving the rigidity of the entire membrane rack, improving the assembly efficiency, reducing the assembly workload, reducing the installation error, solving the problem of local stress concentration or ineffective fastening caused by directly fixing the MBR curtain membrane assembly, and preventing the membrane from falling off or being damaged. At the same time, in the present application, the channel steel fixes the MBR curtain membrane assembly while wrapping, covering, and not exposing the corresponding parts, preventing collision damage.

[0033] (3) In the present application, the water production pipe of the MBR curtain membrane assembly is inserted and anti-rotated with the first inner lock head, the first inner lock head is inserted and anti-rotated with the first outer lock head, the first outer lock head is inserted and anti-rotated with the square frame, and the first outer lock head is locked by the wedge-shaped structure with the first channel steel, and the first channel steel tightly fixes the first outer lock head. This structure improves the convenience of disassembly and assembly. BRIEF DESCRIPTION OF DRAWINGS

[0034] The accompanying drawings, which form a part of the present application, are used to provide a further understanding of the present application, and the illustrative embodiments thereof and their descriptions serve to explain the present application, and do not constitute an improper limitation thereof. In the drawings:

[0035] Figure 1 A three-dimensional schematic view of the MBR membrane rack device according to the present application;

[0036] Figure 2 A three-dimensional schematic view of the square frame in the present application;

[0037] Figure 3 A schematic view of the water production pipe corresponding to the first anti-rotation fixing structure in the present application;

[0038] Figure 4 A three-dimensional schematic view of the first outer lock head in the present application;

[0039] Figure 5 A schematic view of the internal structure of the first outer lock head in the present application;

[0040] Figure 6 A three-dimensional schematic view of the first inner lock head in the present application;

[0041] Figure 7It is a structure diagram of water production pipe in the embodiment;

[0042] Figure 8 It is a three-dimensional diagram of the second inner lock head in the embodiment;

[0043] Figure 9 It is a three-dimensional diagram of the water production joint in the embodiment;

[0044] Figure 10 It is a structure diagram of the internal structure of the water production joint in the embodiment;

[0045] Figure 11 It is a structure diagram of the connection between the water production pipe and the water production joint in the embodiment;

[0046] Figure 12 It is a three-dimensional diagram of the aeration pipe in the embodiment;

[0047] Figure 13 It is a bottom view of the aeration pipe in the embodiment;

[0048] Figure 14 It is a structure diagram of the aeration box assembly in the embodiment;

[0049] Figure 15 It is Figure 14 A-A sectional view.

[0050] Explanation of reference signs:

[0051] 1-square frame; 101-collector pipe; 102-collector main pipe; 103-water production port; 104-aeration cross pipe; 105-aeration main pipe; 106-air inlet; 107-first cross beam; 108-second cross beam; 109-stop block; 2-water production joint; 21-mounting part; 22-water production part; 23-ring-shaped sealing groove; 24-water outlet hole; 25-fixing hole; 26-water production hole; 3-aeration pipe; 31-aeration hole; 32-pressure relief pipe; 33-circular groove; 4-first outer lock head; 41-insertion part; 42-limiting side surface; 44-limiting part; 5-first channel steel; 6-first inner lock head; 61-plug; 7-MBR curtain type membrane assembly; 73-MBR membrane curtain; 74-water production pipe; 8-second inner lock head; 9-aeration outer box; 91-aeration chamber; 911-aeration passage; 92-aeration inner box; 921-slag discharge port; 93-square frame; 10-second outer lock head; 11-second channel steel; 13-limiting boss; 14-limiting hole; 15-quick lock clamp. DETAILED DESCRIPTION

[0052] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0053] The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0054] An MBR membrane frame device, as Figure 1 described, comprising a square frame 1, a sewage treatment unit arranged in the square frame 1, and an aeration unit arranged below the sewage treatment unit, wherein the sewage treatment unit comprises a plurality of MBR curtain membrane assemblies, and the aeration unit comprises a plurality of aeration pipes 3.

[0055] The square frame 1 has a structure as Figure 2 shown, comprising an upper layer and a lower layer of square frames, and four vertical columns connecting the two layers of square frames. One upper and one lower of one side of the square frame 1 are provided with two water collecting pipes 101, both of which are connected to a water collecting main pipe 102, which is matched with a water outlet 103. The two water collecting pipes 101 are used to connect with the MBR curtain membrane assemblies. After sewage is treated by the MBR curtain membrane assemblies, it enters the water collecting pipes 101, then flows into the water collecting main pipe 102, and finally is discharged through the water outlet. One upper and one lower of the other side of the square frame 1 are provided with two first cross beams 107, which correspond to the two water collecting pipes 101 respectively, and are used to install the MBR curtain membrane assemblies. The bottom of the square frame 1 is provided with a ventilation cross pipe 104 corresponding to the aeration pipe 3 and a second cross beam 108. The ventilation cross pipe 104 and the second cross beam 108 are opposite to each other. The ventilation cross pipe 104 is connected to a ventilation main pipe 105, which is matched with an air inlet 106. Through this structure, gas is introduced into the aeration pipe 3 and aerated from the bottom of the MBR curtain membrane assemblies.

[0056] As a preferred embodiment, one cross beam in the upper layer of square frames is the first cross beam 107, and the remaining three cross beams in the upper layer of square frames are hollow structures. The water outlet 103 is arranged on one of the hollow cross beams, the air inlet is arranged on another hollow cross beam, and the remaining hollow cross beam is the water collecting pipe 101. The cross beam used as the water collecting pipe and the first cross beam 107 are opposite to each other. Similarly, one cross beam in the lower layer of square frames is hollow and used as the water collecting pipe 101, and the cross beam opposite to it is the first cross beam 107. One vertical column of the square frame 1 is hollow and communicates with the cross beam on which the water outlet 103 is arranged to form the water collecting main pipe 102, which connects the two water collecting pipes 101. Another vertical column of the square frame 1 is hollow and communicates with the cross beam on which the air inlet 106 is arranged to form the ventilation main pipe 105, which communicates with the ventilation cross pipe 104. The gas supply channel and the water flow channel simplify the structure of the device itself and improve the convenience of installation of the device.

[0057] The MBR curtain membrane module 7 includes two permeate pipes 74 arranged one above the other, and an MBR membrane curtain 73 connecting the two permeate pipes 74. One end of the permeate pipe 74 is open and the other end is closed. The permeate pipe 74 has a groove for installing the MBR membrane curtain 73 with its wall facing downward. The closed end of the permeate pipe 74 is installed on the first crossbeam 107 at the corresponding position through the first anti-rotation fixing structure. The open end of the permeate pipe 74 is connected and communicated with the corresponding water collection pipe 101 through the permeate connector 2. The water filtered by the MBR membrane curtain 73 flows into the water collection pipe 101 through the permeate pipe 74 and the permeate connector 2, then enters the main water collection pipe 102, and is finally discharged from the permeate outlet 103.

[0058] The number of aeration pipes 3 ensures that there is at least one aeration pipe 3 under each MBR curtain membrane module. One end of the aeration pipe 3 is open and the other end is closed. The open end of the aeration pipe 3 is connected to the ventilation horizontal pipe 104, and the closed end of the aeration pipe 3 is installed on the second crossbeam 108 through the second anti-rotation fixing structure.

[0059] The first anti-rotation fixing structure is as follows: Figure 1 , Figure 3 As shown, the device includes a first channel steel 5, a first outer lock head 4, and a first inner lock head 6. A groove is provided on the outer side of the first crossbeam 107. The first channel steel 5 covers the groove and is connected to the first crossbeam 107 by bolts. The first crossbeam 107 has a through hole corresponding to the first outer lock head 4. The first outer lock head 4 passes through the through hole. The first inner lock head 6 is splinedly connected to the first outer lock head 4. The end of the water production pipe 74 is inserted into the first outer lock head 4 and connected to the first inner lock head 6. The outer end of the first outer lock head 4 extends into the first channel steel 5. The first channel steel 5 presses the first outer lock head 4 tightly to fix the water production pipe 74.

[0060] The structure of the first external lock head 4 is as follows: Figure 4 , Figure 5 As shown, the device includes an adjacent insertion part 41 and a limiting part 44. The limiting part 44 has a limiting side 42 at its upper and lower ends, and both limiting side 42 are inclined planar structures with an inclination angle corresponding to the channel wall of the first channel steel 5. A limiting boss 43 is provided on the outer end face of the limiting part 44. The inner end face of the first outer lock head 4 (the end face facing the inside of the square frame) has an insertion hole. The insertion hole is a blind hole and includes a smooth hole and a spline hole. The smooth hole is located outside the spline hole. The diameter of the smooth hole corresponds to the diameter of the water production pipe 74 and is larger than the diameter of the spline hole. The spline hole has a spline groove.

[0061] The structure of the water production pipe 74 is as follows Figure 7As shown, the outer circumferential surface of the open end (and the end connected to the water collecting pipe) of the water production pipe 74 is provided with a sealing groove, and the end surface of the closed end (and the end connected to the first cross beam) is provided with four first insertion grooves 741 around the axis, which are evenly distributed. The cross section of the first insertion groove 741 is a right-angled sector. This structure connects the adjacent first insertion grooves 741 through the connecting plate, ensuring the stability and strength of the connection of the water production pipe 74.

[0062] The structure of the first inner lock head 6 is as shown in Figure 6 As shown, the front end of the first inner lock head 6 is provided with a plug 61 corresponding to the first insertion groove 741, and the rear end of the inner lock head 3 is provided with a spline tooth corresponding to the spline hole of the outer lock head 4.

[0063] The assembly structure is as shown in Figure 3 As shown, the first inner lock head 6 is inserted into the first outer lock head 4 and connected by spline, the first outer lock head 4 is inserted into the perforation of the first cross beam 107, the water production pipe 74 is inserted into the first outer lock head 4, the first insertion groove 741 and the plug 61 of the first inner lock head 6 are matched and inserted, the plug 61 abuts against the bottom of the first insertion groove 741, the first inner lock head 6 and the first outer lock head 4 are connected by spline, and the inner end (the end away from the plug) of the first inner lock head 6 abuts against the bottom of the insertion hole of the first lock head 4. In this structure, the insertion structure between the water production pipe 74 and the first inner lock head 6, and the spline connection structure between the first inner lock head 6 and the first outer lock head 4, effectively prevent the water production pipe 74 from rotating relative to the first outer lock head 4. The limiting part 44 of the first outer lock head 4 is inserted into the first channel steel 5, the limiting boss 43 is inserted out of the limiting hole 14 of the first channel steel 5, at this time the first outer lock head 4 is covered by the first channel steel 5 in the groove of the first cross beam 107, the limiting side surface 42 is in close contact with the groove wall of the first channel steel 5 and is locked by wedge, preventing the first outer lock head 4 from rotating, and further preventing the water production pipe 74 from rotating relative to the first cross beam 107, the first channel steel 5 tightly presses the first outer lock head 4 and is connected and fixed with the first cross beam 107 through bolts, and further fixes the water production pipe 74.

[0064] The first anti-rotation fixing structure realizes stable connection of the water production pipe 74, effectively prevents the water production pipe 74 from rotating, and prevents the MBR membrane from being wound on the water production pipe due to shaking, thereby protecting the MBR membrane. At the same time, in this structure, only a small number of bolts are used to fasten the channel steel and the frame, thereby fixing the MBR curtain type membrane assembly, improving the assembly efficiency, reducing the assembly workload, reducing the installation error, and the MBR membrane curtain fixing assembly is wrapped by the frame and the first channel steel without being exposed, thereby improving the firmness of the whole membrane rack.

[0065] The structure of the water production joint 2 is as shown in Figure 9 、 10As shown, the installation part 21 and the water production part 22 are coaxial and arranged adjacent to each other, the diameter of the installation part 21 is larger than that of the water production part 22, the small end surface of the installation part 21, i.e. the end surface adjacent to the water production part 22, is provided with an annular sealing groove 23, and the large end surface of the installation part 21, i.e. the end surface away from the water production part 22, is provided with a water production hole 26, the water production hole 26 is a blind hole, the hole bottom of the water production hole 26 extends into the water production part 22, and a plurality of water outlet holes 24 are uniformly arranged in the circumferential direction of the hole wall of the water production hole 26 at a position close to the hole bottom, i.e. the water outlet holes 24 are arranged on the circumferential surface of the water production part 22, and the hole bottom of the water production hole 26 is provided with a fixing hole 25 corresponding to the bolt, and the fixing hole 25 is preferably a countersunk hole.

[0066] Figure 1 As shown, the installation part 21 and the water production part 22 are coaxial and arranged adjacent to each other, the diameter of the installation part 21 is larger than that of the water production part 22, the small end surface of the installation part 21, i.e. the end surface adjacent to the water production part 22, is provided with an annular sealing groove 23, and the large end surface of the installation part 21, i.e. the end surface away from the water production part 22, is provided with a water production hole 26, the water production hole 26 is a blind hole, the hole bottom of the water production hole 26 extends into the water production part 22, and a plurality of water outlet holes 24 are uniformly arranged in the circumferential direction of the hole wall of the water production hole 26 at a position close to the hole bottom, i.e. the water outlet holes 24 are arranged on the circumferential surface of the water production part 22, and the hole bottom of the water production hole 26 is provided with a fixing hole 25 corresponding to the bolt, and the fixing hole 25 is preferably a countersunk hole. Figure 11 As shown, the installation part 21 and the water production part 22 are coaxial and arranged adjacent to each other, the diameter of the installation part 21 is larger than that of the water production part 22, the small end surface of the installation part 21, i.e. the end surface adjacent to the water production part 22, is provided with an annular sealing groove 23, and the large end surface of the installation part 21, i.e. the end surface away from the water production part 22, is provided with a water production hole 26, the water production hole 26 is a blind hole, the hole bottom of the water production hole 26 extends into the water production part 22, and a plurality of water outlet holes 24 are uniformly arranged in the circumferential direction of the hole wall of the water production hole 26 at a position close to the hole bottom, i.e. the water outlet holes 24 are arranged on the circumferential surface of the water production part 22, and the hole bottom of the water production hole 26 is provided with a fixing hole 25 corresponding to the bolt, and the fixing hole 25 is preferably a countersunk hole.

[0067] The second anti-rotation fixing structure between the aeration pipe 3 and the second cross beam 108 is as shown in Figure 1 The second anti-rotation fixing structure includes the second channel steel 11, the second outer lock head 10, and the second inner lock head 8 connected with the second outer lock head through internal splines. The second cross beam 108 is provided with a groove on the outer side surface, and the second channel steel 11 is opposite to the groove and is fixed to the second cross beam 108 through bolts.

[0068] The structure of the second outer lock head 10 is the same as that of the first outer lock head 4, including the plug-in part and the limiting part arranged adjacent to each other, and the upper end and the lower end of the limiting part are respectively provided with a limiting side surface, both of which are inclined planar structures, and the inclination angle corresponds to the groove wall of the second channel steel 11. The second outer lock head 10 is movably arranged in the second cross beam 108. Figure 12 、 Figure 13As shown, the left and right sides of the lower tube wall of the aeration pipe 3 are provided with aeration holes 31, and preferably, the aeration holes 31 on the left and right sides of the aeration pipe 3 are staggered. The aeration pipe 3 is connected downward at a position close to the closed end and is provided with a pressure relief pipe 32. The closed end of the aeration pipe 3 is provided with a circular groove 33, and the groove wall of the circular groove 33 is uniformly provided with a plurality of insertion slots in the circumferential direction. The insertion slot structure is preferably the same as the spline groove in the second inner lock head 10, and the insertion slot penetrates the groove wall of the circular groove 33. The structure of the second inner lock head 8 is as follows Figure 8 As shown, the spline on the second inner lock head 8 extends to the front end, and when the circular groove 33 is inserted, it forms a spline connection structure with the insertion slot on the groove wall of the circular groove 33. The open end of the aeration pipe 3 is connected and communicated with the air pipe 104, and the closed end extends into the second inner lock head 10 and is spline connected with the second inner lock head 8. The outer end of the second outer lock head 10 is inserted into the second channel steel 11, and the limiting side surface on the second outer lock head 10 corresponding to the groove wall of the second channel steel 11 is in close contact with the groove wall of the second channel steel 11 to form a wedge-shaped locking structure, and the second channel steel 11 tightly presses the second outer lock head 10 to fix the aeration pipe 3.

[0069] In the present application, the aeration pipe 3 is upwardly aerated, and when the aeration hole 31 is blocked by impurities in the sewage, the air pressure in the aeration pipe 3 increases, and when the air pressure increases to a certain critical value, it can be quickly relieved through the pressure relief pipe 32. At the moment of pressure relief, the pressure in the aeration pipe 3 rapidly decreases, and the sewage impacts the blocked aeration hole 31, removing the impurities in the aeration hole 31, and unblocking the blocked aeration hole 31.

[0070] The second anti-rotation fixing structure realizes anti-rotation of the aeration pipe 3 without exposed fixing and installation, improves the assembly efficiency, reduces the assembly workload, reduces the installation error, and improves the firmness of the entire membrane frame.

[0071] In the present application, the square frame 1 is also provided with an aeration box assembly between the aeration pipe 3 and the MBR curtain type membrane assembly, as shown in Figure 14 , Figure 15As shown, the aeration box assembly comprises a plurality of aeration outer boxes 9, which are rectangular box structures arranged in the same direction as the aeration pipe 3, each of the aeration outer boxes 9 is provided with a plurality of aeration chambers 91, the aeration chambers 91 are downwardly provided with openings opposite to the aeration pipe 3, a ventilation passage 911 is vertically arranged in the aeration chamber 91 and penetrates the top surface of the aeration chamber 91, and an aeration inner box 92 is fixedly arranged in the aeration chamber 91, in the present application, the aeration inner box 92 is a square box body with an open top, the aeration chamber 91 is also a square structure, one side surface of the aeration inner box 92 is bonded and fixed with one side surface of the aeration chamber 91, and the other side surfaces of the aeration inner box 92 are respectively provided with ventilation spaces with the side surfaces and the top surface of the aeration chamber 91, and the lower end of the ventilation passage 911 extends into the aeration inner box 92 and is spaced from the bottom of the aeration inner box 92, the gas flowing out of the aeration hole enters the aeration inner box 92 through the ventilation space, and is finally upwardly aerated through the ventilation passage 911.

[0072] The bottom of the aeration inner box 92 is obliquely arranged, and a residue discharge port 921 is arranged at the low end of the bottom, the residue discharge port 921 is arranged away from the ventilation passage 911, and the residue discharge port 921 is arranged away from the aeration pipe 3.

[0073] In the present application, the plurality of aeration outer boxes 9 are clamped by two square frames 93 arranged one above the other and are fixed by bolts to form a mounting body, the mounting body is placed on two support beams arranged correspondingly on the square frame 1, as an option, the ventilation cross pipe 104 and the second cross beam 108 are used as the two support beams, one of the support beams is provided with a stop block 109, and the other support beam is provided with a quick-lock clamp 15, the mounting body is limited in the horizontal X direction by the quick-lock clamp 15 and the stop block 109, and the vertical columns of the square frame 1 located at the two ends of the support beam limit the mounting body in the horizontal Y direction. This structure limits the mounting body in the horizontal direction, and does not completely limit the mounting body in the vertical direction, when the impact force of the sewage is large, the whole mounting body can be slightly displaced upward and downward, so as to release the local stress and improve the shock absorption and impact resistance of the mounting body. At the same time, the aeration outer boxes can be assembled into the mounting body and then loaded into the membrane rack, without the need to squat on the ground to install them one by one, thereby reducing the difficulty of loading and unloading.

[0074] The above only describes the preferred embodiments of the present application and should not be used to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. An MBR membrane frame device, characterized in that: include: A square frame (1) has two water collection pipes (101) on one side, one above the other. Both water collection pipes (101) are connected to the water outlet (103) through the main water collection pipe (102). Two first crossbeams (107) are provided on the other side of the square frame (1). Several MBR curtain membrane modules are set in a square frame (1). Each MBR curtain membrane module (7) includes two permeate pipes (74) arranged one above the other, and an MBR membrane curtain (73) connecting the two permeate pipes (74). One end of the permeate pipe (74) is open and the other end is closed. The open end of the permeate pipe (74) is connected to the corresponding water collection pipe (101) through the permeate connector (2). The closed end of the permeate pipe (74) is installed on the first crossbeam (107) at the corresponding position through the first anti-rotation fixing structure. The aeration assembly includes an air inlet (106) and several aeration pipes (3) arranged below the MBR curtain membrane assembly. One end of the aeration pipe (3) is open and the other end is closed. The square frame (1) has a ventilation horizontal pipe (104) corresponding to the aeration assembly on one side and a second crossbeam (108) corresponding to the other side. The open end of the aeration pipe (3) is connected to the ventilation horizontal pipe (104). The ventilation horizontal pipe (104) is connected to the air inlet (106) through the ventilation main pipe (105). The closed end of the aeration pipe (3) is installed on the second crossbeam (108). The first anti-rotation fixing structure includes a first channel steel (5), a first outer lock head (4), and a first inner lock head (6) connected by an inner spline; The first channel steel (5) is installed on the outside of the first crossbeam (107); The first outer lock head (4) is movably mounted on the first crossbeam (107). The end of the water production pipe (74) is provided with multiple first slots (741) and extends into the first outer lock head (4). The end of the first inner lock head (6) is provided with multiple plugs (61). The first slots (741) and plugs (61) are inserted into each other. The outer end of the first outer lock head (4) is provided with a limiting side (42) that matches the groove wall of the first channel steel (5). The outer end of the first outer lock head (4) is inserted into the first channel steel (5). The limiting side (42) and the groove wall of the first channel steel (5) are attached to form a wedge-shaped locking structure. The first channel steel (5) presses the first outer lock head (4) to fix the water production pipe (74).

2. The MBR membrane frame device according to claim 1, characterized in that: The outer end face of the first outer lock head (4) is provided with a limiting boss (13), and the web of the first channel steel (5) is provided with a corresponding limiting hole (14). The limiting boss (13) is inserted into the limiting hole (14).

3. The MBR membrane frame device according to claim 1, characterized in that: The outer side of the first crossbeam (107) has a groove, and the first channel steel (5) covers the first outer lock head (4) in the groove of the first crossbeam (107).

4. The MBR membrane frame device according to claim 1, characterized in that: The aeration pipe (3) is installed on the second crossbeam (108) through the second anti-rotation fixing structure. The second anti-rotation fixing structure includes a second channel steel (11), a second outer lock head (10) and a second inner lock head (8) connected by an inner spline. The second channel steel (11) is installed on the outside of the second crossbeam (108); The second outer locking head (10) is movably mounted on the second crossbeam (108). The end of the aeration pipe (3) extends into the second outer locking head (10). The aeration pipe (3) has a circular groove (33) at this end. The outer end of the second inner locking head (8) is inserted into the circular groove and connected to the circular groove through a spline structure. The outer end of the second outer locking head (10) is inserted into the second channel steel (11). The second outer locking head (10) has a limiting side corresponding to the groove wall of the second channel steel (11). The limiting side and the groove wall of the second channel steel (11) are attached to form a wedge-shaped locking structure. The second channel steel (11) presses the second outer locking head (10) tightly to fix the aeration pipe (3).

5. An MBR membrane frame device according to claim 1, characterized in that: The water production connector (2) includes a coaxial and adjacent mounting part (21) and a water production part (22). The diameter of the mounting part (21) is larger than the diameter of the water production part (22). A water production hole (26) is provided on the large end face of the mounting part (21). The water production hole (26) is a blind hole. Its bottom extends into the water production part (22) and is provided with a mounting fixing hole (25). Several water outlet holes (24) are provided at the end of the hole wall of the water production hole (26). The water production part (22) is inserted into the water collection pipe (101) and connected through the water outlet (24). The water production pipe (74) is inserted into the water production hole (26) and sealed with the water production hole (26) through the sealing ring at the end of the water production pipe (74).

6. An MBR membrane frame device according to claim 1, characterized in that: The square frame (1) is further provided with an aeration box assembly between the aeration pipe (3) and the MBR curtain membrane assembly. The aeration box assembly includes an outer aeration box (9), which has several aeration chambers (91). Each aeration chamber (91) has an opening facing downwards, which is directly opposite to the aeration pipe (3). A vertical ventilation channel (911) is provided inside the aeration chamber (91), which extends out of the top surface of the aeration chamber (91). An inner aeration box (92) is fixedly provided inside the aeration chamber (91). The top of the inner aeration box (92) is open. Ventilation spaces are left between the inner aeration box (92) and the sides and top of the aeration chamber (91). The lower end of the ventilation channel (911) extends into the inner aeration box (92) and is separated from the bottom of the inner aeration box (92). The bottom of the aeration inner box (92) is inclined, and a slag discharge port (921) is opened at the lower end of the bottom of the box. The slag discharge port (921) is offset from the air passage (911) and offset from the aeration pipe (3).

7. An MBR membrane frame device according to claim 6, characterized in that: The aeration outer box (9) is a rectangular box structure, and multiple aeration outer boxes (9) are arranged side by side. Multiple aeration outer boxes (9) are clamped and fixed by two square frames (93) one above and one below to form the installation body. The installation body is placed on two support beams corresponding to the square frame (1). One of the support beams is equipped with a stop block (109), and the other support beam is equipped with a quick-lock clamp (15). The quick-lock clamp (15) and the stop block (109) limit the horizontal X direction of the installation body. The columns of the square frame (1) located at both ends of the support beam limit the horizontal Y direction of the installation body.

8. An MBR membrane frame device according to claim 1, characterized in that: The aeration holes (31) of the aeration pipe (3) are staggered at the bottom left and right sides of the pipe wall.

9. An MBR membrane frame device according to claim 1, characterized in that: The aeration pipe (3) has a pressure relief pipe (32) facing downward near the closed end.

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