A chemical production wastewater treatment device

Abstract

The present invention discloses a chemical production wastewater treatment device, which relates to the technical field of sewage treatment equipment. A fixing component is arranged in the reaction tank. The fixing component includes an upper fixing plate and a lower fixing plate arranged side by side up and down. Both the first membrane bundle and the second membrane bundle are composed of a plurality of membrane filaments arranged in parallel. The two ends of the first membrane bundle and the second membrane bundle are respectively fixed to the upper fixing plate and the lower fixing plate, and at least one cross-contact point exists in the part between the upper fixing plate and the lower fixing plate of the first membrane bundle and the second membrane bundle. By arranging the fixing component, the constraining component and the driving mechanism, the driving component drives the constraining component to act, so that the position of the cross-contact point is continuously changed, and the adjacent first membrane bundle and the second membrane bundle rub against each other, thereby comprehensively realizing self-cleaning of the membrane filaments.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment equipment, and specifically relates to a chemical production wastewater treatment device. Background Technique

[0002] At present, many wastewater treatment projects aim at "zero discharge". However, the water quality components of coal tar wastewater are complex, with the characteristics of high ammonia nitrogen, high oil content, high toxicity, and low B / C ratio. It belongs to high-difficulty industrial wastewater. The current main treatment process for such wastewater is pretreatment, physico-chemical treatment, biochemical treatment, and advanced treatment. Among them, biochemical treatment is mainly achieved through A / O and AA / O processes or MBR membrane bioreactors.

[0003] Among them, the MBR membrane bioreactor has high-efficient water quality treatment ability and less production of surplus sludge. However, the service life of the membrane module is limited and needs to be replaced when it expires. In the patent with the patent number CN117185475B, a sewage treatment device for an MBR membrane bioreactor is proposed. The reciprocating toothed plate moves reciprocally. The reciprocating toothed plate slides on the sliding seat through the sliding groove. The reciprocating toothed plate contacts the gear, and the gear rotates. By using the centrifugal force generated when the gear rotates, the dirt adsorbed on the MBR membrane tube is shaken off, thereby reducing the stains adsorbed on the MBR membrane tube. A brush is also provided to clean the surface of the MBR membrane tube to prevent impurities from condensing on the surface of the MBR membrane tube, thereby improving the treatment efficiency of the MBR membrane and extending the replacement cycle.

[0004] However, when this device is in use, the cleaning component can only clean the MBR membrane tubes on the outer side of the transmission mechanism. For the inner membrane tubes, the membrane tubes are close to each other, and the sludge cannot be shaken off the surface of the MBR membrane tube by centrifugal force, and the brush cannot play a cleaning role on the inner MBR membrane tubes either. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides a chemical production wastewater treatment device, which solves the problems raised in the background technique.

[0006] To achieve the above object, the present invention is realized through the following technical solutions: A chemical production wastewater treatment device includes a base and membrane filaments. A reaction tank is provided in the base, and it further includes: a fixing component, which is arranged in the reaction tank, and the fixing component includes an upper fixing plate and a lower fixing plate arranged side by side up and down; a first membrane bundle and a second membrane bundle, both the first membrane bundle and the second membrane bundle are composed of a plurality of membrane filaments arranged in parallel. The two ends of the first membrane bundle and the second membrane bundle are respectively fixed to the upper fixing plate and the lower fixing plate, and at least one cross-contact point exists in the part between the first membrane bundle and the second membrane bundle between the upper fixing plate and the lower fixing plate; a driving mechanism, which is arranged between the upper fixing plate and the lower fixing plate, and the driving mechanism is used to drive the first membrane bundle and the second membrane bundle to move, so as to continuously change the position of the cross-contact point, and make the first membrane bundle and the second membrane bundle rub against each other to remove impurities on their own surfaces.

[0007] Further, it further includes a constraint component, which is arranged between the upper fixing plate and the lower fixing plate. The constraint component includes: a constraint disk, which is arranged between the upper fixing plate and the lower fixing plate. A connecting rod is also fixed between the upper fixing plate and the lower fixing plate, and the connecting rod passes through the constraint disk and is fixedly connected to the constraint disk; a sliding groove, which is opened on the constraint disk. There are a plurality of sliding grooves, and the plurality of sliding grooves are arranged in a circular array about the axis of the constraint disk; a constraint ring sleeve, and a constraint ring sleeve is slidably arranged in each sliding groove. Adjacent two constraint ring sleeves are respectively at one end close to the axis of the constraint disk and one end far from the axis of the constraint disk in the sliding groove; the adjacent first membrane bundle and the second membrane bundle respectively pass through the adjacent two sliding grooves, and the parts of the first membrane bundle and the second membrane bundle located in the sliding grooves are fixedly connected to the constraint ring sleeve; each of the first membrane bundle and the second membrane bundle has a cross-contact point on both sides in the vertical direction of the constraint disk.

[0008] Further, the driving mechanism includes: a sliding shaft disposed in the reaction tank, and the upper fixing plate, the lower fixing plate and the restraint disc are all rotatably disposed on the outer peripheral surface of the sliding shaft; a fixing block disposed in the sliding groove and fixedly connected to the restraint disc, and the fixing block is located at one end of the sliding groove away from the corresponding restraint ring sleeve, and a clearance space is left between the fixing block and the inner wall of the sliding groove; a spring disposed in the sliding groove, with one end of the spring fixedly connected to the restraint ring sleeve and the other end fixedly connected to the fixing block; a through groove opened on the side wall of the sliding groove and used to communicate two adjacent sliding grooves; a pulling rope disposed on the restraint disc, the pulling rope having a fixed end and a free end, the fixed end being fixedly connected to the fixing block or the restraint ring sleeve, and the free end sequentially passing through one restraint ring sleeve, the through groove, the adjacent restraint ring sleeve, the fixing block, the adjacent through groove and the adjacent fixing block, and repeating this process until passing through all the restraint ring sleeves, and then the free end is led out towards the axis of the sliding shaft; a winding assembly disposed between the restraint disc and the sliding shaft, the free end of the pulling rope being fixedly connected to the winding assembly, and the winding assembly being used to wind or unwind the pulling rope to enable the restraint ring sleeve to slide in the sliding groove.

[0009] Further, the winding assembly includes: a mounting disc, the axis of which is fixedly connected to the sliding shaft, and the mounting disc is disposed at a position close to the restraint disc; a winding column rotatably mounted on the surface of the restraint disc, and the free end of the pulling rope is fixedly connected to the winding column; a winding gear fixedly provided on the surface of the winding column on the side away from the restraint disc, and a sliding column is fixedly provided on the surface of the winding gear on the side away from the winding column; a ring groove opened on the surface of the mounting disc on the side close to the restraint disc, and the sliding column can slide in the ring groove; an inner ring arc gear fixedly provided on the surface of the mounting disc on the side close to the restraint disc, and the inner ring arc gear is located on one side of the ring groove close to the axis of the mounting disc, and the inner ring arc gear can be internally meshed with the winding gear; an outer ring arc gear fixedly provided on the surface of the mounting disc on the side close to the restraint disc, the outer ring arc gear is located on one side of the ring groove away from the axis of the mounting disc, and the outer ring arc gear can be externally meshed with the winding gear; the winding gear disengages from the inner ring arc gear and meshes with the outer ring arc gear, and when the winding gear disengages from the outer ring arc gear, it meshes with the inner ring arc gear.

[0010] Further, the restraint ring sleeve is composed of an adhesive layer, a sleeve layer and a through hole; the adhesive layer is used to fix a plurality of membrane filaments, and the adhesive layer is made of a flexible material; the sleeve layer is sleeved in the middle of the restraint ring sleeve, and the sleeve layer is made of a rigid material; the diameter of the sleeve layer is smaller than the diameter of the first membrane bundle or the second membrane bundle outside the sliding groove, so that stepped portions are formed on both sides of the restraint ring sleeve in the sliding groove; the through hole is opened on the sleeve layer and penetrates through the restraint ring sleeve.

[0011] Furthermore, a central column is fixedly installed at the center of the reaction tank. There are multiple sets of the fixing assembly, the constraining assembly, and the driving mechanism, which are arranged in an annular array about the axis of the central column.

[0012] Furthermore, a planetary gear is fixedly connected to the upper surface of each upper fixing plate. A sun gear is fixedly installed on the outer peripheral surface of the central column, and the planetary gear meshes with the sun gear. An external gear ring is arranged on the side of the planetary gear away from the sun gear, and the planetary gear meshes with the external gear ring. A driving device is arranged on the base, and the driving device is used to drive the external gear ring to rotate.

[0013] Furthermore, a rotating disk is arranged below the lower fixing plate. The lower fixing plate is rotatably installed on the rotating disk, and the rotating disk is rotatably connected to the central column. The bottom end of the sliding shaft passes through the rotating disk. A ring rail is fixedly installed at the bottom of the reaction tank. An arc groove is formed at the bottom end of the sliding shaft, and the arc groove can slide on the ring rail.

[0014] Furthermore, at least one reaction tank is provided. A water passing groove is formed between two adjacent reaction tanks, and the water outlet area of the water passing groove is smaller than the water inlet area. A water baffle is fixedly installed in the reaction tank, and the distance between the water baffle and the inner wall of the reaction tank gradually increases along the rotation direction of the external gear ring.

[0015] Furthermore, a second connecting water pipe is fixedly installed on the planetary gear. The first membrane bundle and the second membrane bundle are communicated with the second connecting water pipe. A second annular water pipe is rotatably arranged at the top end of the sliding shaft, and the second annular water pipe is communicated with the second connecting water pipe. A first annular water pipe is rotatably arranged at the top end of the central column. A first connecting water pipe is communicated with the second annular water pipe, and the first connecting water pipe is communicated with the first annular water pipe. The first annular water pipe is communicated with the water collecting pipe.

[0016] The present invention has the following beneficial effects:

[0017] (1) For this chemical production wastewater treatment device, by arranging the fixing assembly, the constraining assembly, and the driving mechanism, the first membrane bundle and the second membrane bundle are installed on the fixing assembly, and through the constraining assembly, the first membrane bundle and the second membrane bundle are arranged in a crosswise manner between the upper fixing assemblies, so that there is at least one cross contact point between the first membrane bundle and the second membrane bundle at the part between the upper fixing plate and the lower fixing plate. Then, by driving the constraining assembly to act through the driving assembly, the position of the cross contact point is continuously changed, so that the adjacent first membrane bundle and the second membrane bundle rub against each other, thereby comprehensively realizing self-cleaning of the membrane filaments and also being able to clean the inner membrane filaments.

[0018] (2) In this chemical production wastewater treatment device, the fixing components, restraining components, and driving mechanism are arranged in an annular array around the axis of the central column, and an external gear ring is set to drive the planet gears to rotate, thereby driving all the membrane filaments to rotate around the central column, so as to form a cross flow on the surface of the membrane filaments, generating shear force and disturbing force, enabling macromolecules such as biological aggregates to detach from the surface of the membrane filaments, and further extending the operation cycle of the membrane filaments.

[0019] Of course, it is not necessary for any product implementing the present invention to simultaneously achieve all the above-mentioned advantages. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 is a top view of a single reaction tank of the present invention;

[0022] Figure 3 is a structural diagram of the interior of the reaction tank of the present invention;

[0023] Figure 4 is a schematic diagram of the installation positions of the fixing components and the restraining disc of the present invention;

[0024] Figure 5 is a schematic diagram of the layout of the first membrane bundle and the second membrane bundle of the present invention;

[0025] Figure 6 is a schematic diagram of the structure of the driving mechanism and the restraining components of the present invention;

[0026] Figure 7 is a top view of the driving mechanism and the restraining components of the present invention;

[0027] Figure 8 is a schematic diagram of the layout of the pull rope, the fixing block, and the restraining ring sleeve of the present invention;

[0028] Figure 9 is a schematic diagram of the cooperation between the pull rope, the restraining ring sleeve, and the restraining disc of the present invention;

[0029] Figure 10 is a cross-sectional view of the sliding groove structure of the present invention;

[0030] Figure 11 is for the present invention Figure 7 enlarged schematic diagram of area A in;

[0031] Figure 12 is a schematic diagram of the cooperation between the winding gear, the inner ring arc gear, and the outer ring arc gear of the present invention;

[0032] Figure 13 is a cross-sectional view of the restraining ring sleeve structure of the present invention;

[0033] Figure 14Front elevation sectional view of the lower fixing plate and the rotating disc of the present invention;

[0034] Figure 15 Schematic sectional view of the reaction tank structure of the present invention;

[0035] Figure 16 Schematic layout view of the reaction tank of the present invention;

[0036] Figure 17 Schematic top view of the top structure of the central column of the present invention.

[0037] In the figure, 1, base; 2, reaction tank; 3, gas transmission pipe; 4, aeration pipe; 5, water collecting pipe; 6, first annular water pipe; 61, first connecting water pipe; 7, second annular water pipe; 71, second connecting water pipe; 8, driving device; 9, external gear ring; 10, planet gear; 11, sun gear; 12, upper support platform; 13, central column; 14, water baffle; 15, water through groove; 16, upper fixing plate; 17, lower fixing plate; 18, restraint disc; 181, sliding groove; 182, through groove; 183, clearance space; 19, connecting rod; 20, membrane filament; 201, first membrane bundle; 202, second membrane bundle; 21, restraint ring sleeve; 211, bonding layer; 212, sleeve layer; 213, through hole; 214, stepped part; 22, rotating disc; 23, mounting disc; 231, ring groove; 24, sliding shaft; 241, arc groove; 25, pull rope; 26, first guide block; 261, second guide block; 27, fixed block; 28, spring; 29, inner ring arc gear; 30, outer ring arc gear; 31, winding gear; 311, sliding column; 32, winding column; 33, elastic rod; 34, ring track. Detailed implementation manners

[0038] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0039] Next, according to Figure 1 - Figure 17 Describe a chemical production wastewater treatment device provided by an embodiment of the present invention.

[0040] Please refer to Figure 1 - Figure 6 , an embodiment of the present invention provides a technical solution: a chemical production wastewater treatment device, including a base 1 and a membrane filament 20. The base 1 can be fixed or mobile. The membrane filament 20 is the membrane filament used in the MBR membrane. A reaction tank 2 is provided in the base 1, and the reaction tank 2 is used to temporarily store the sewage to be treated.

[0041] It further includes a fixing component which is arranged inside the reaction tank 2. The fixing component includes an upper fixing plate 16 and a lower fixing plate 17 arranged side by side vertically. The meaning of arranged side by side vertically is that the axes of the upper fixing plate 16 and the lower fixing plate 17 are located on the same vertical line. The fixing component is used to fix the position of the membrane filaments 20.

[0042] In addition, it further includes a first membrane bundle 201 and a second membrane bundle 202. Both the first membrane bundle 201 and the second membrane bundle 202 are composed of a plurality of membrane filaments 20 arranged in parallel. The diameters of the combined first membrane bundle 201 and second membrane bundle 202 are preferably between 1 cm and 3 cm. And both ends of the first membrane bundle 201 and the second membrane bundle 202 are respectively fixed to the upper fixing plate 16 and the lower fixing plate 17. And there are multiple groups of the first membrane bundle 201 and the second membrane bundle 202 arranged in an array around the axis of the upper fixing plate 16. The lengths of the first membrane bundle 201 and the second membrane bundle 202 are greater than the distance between the upper fixing plate 16 and the lower fixing plate 17, so that the first membrane bundle 201 and the second membrane bundle 202 have length margins, and there is at least one cross-contact point at the part of the first membrane bundle 201 and the second membrane bundle 202 between the upper fixing plate 16 and the lower fixing plate 17. In fact, the structures of the first membrane bundle 201 and the second membrane bundle 202 are exactly the same, but there are differences in their spatial arrangement positions.

[0043] Specifically, the fixing points of the first membrane bundle 201 and the second membrane bundle 202 with the upper fixing plate 16 can be arranged in a staggered manner, that is, the distance between the fixing point of the first membrane bundle 201 and the upper fixing plate 16 and the axis of the upper fixing plate 16 is less than the distance between the fixing point of the second membrane bundle 202 and the upper fixing plate 16 and the axis of the upper fixing plate 16. The fixing points of both with the lower fixing plate 17 are also arranged in a staggered manner, that is, the distance between the fixing point of the first membrane bundle 201 and the lower fixing plate 17 and the axis of the lower fixing plate 17 is greater than the distance between the fixing point of the second membrane bundle 202 and the lower fixing plate 17 and the axis of the lower fixing plate 17. Thus, the first membrane bundle 201 and the second membrane bundle 202 are distributed in an "X" shape in space. This description is only exemplary and does not limit the specific positions of the first membrane bundle 201 and the second membrane bundle 202.

[0044] Moreover, it further includes a driving mechanism which is arranged between the upper fixing plate 16 and the lower fixing plate 17. And the driving mechanism plays a pulling role on the first membrane bundle 201 and the second membrane bundle 202 in the horizontal direction respectively, so as to drive the first membrane bundle 201 and the second membrane bundle 202 to move, continuously change the position of the cross-contact point, and then make the first membrane bundle 201 and the second membrane bundle 202 rub against each other to achieve the effect of removing the sludge on their own surfaces. And because the first membrane bundle 201 and the second membrane bundle 202 are in contact and move with each other, it can also prevent sludge from accumulating on the surface of the membrane filaments 20.

[0045] CombinedFigure 4 - Figure 7 , in order to ensure that there is at least one cross - contact point between the first membrane bundle 201 and the second membrane bundle 202 between the upper fixing plate 16 and the lower fixing plate 17, a constraint component is also provided, and the constraint component is arranged in the part between the upper fixing plate 16 and the lower fixing plate 17.

[0046] The constraint component includes a constraint disk 18. The constraint disk 18 is arranged between the upper fixing plate 16 and the lower fixing plate 17. A connecting rod 19 is fixedly arranged between the upper fixing plate 16 and the lower fixing plate 17, and the connecting rod 19 passes through the constraint disk 18 and is fixedly connected to the constraint disk 18, so that the constraint disk 18, the upper fixing plate 16 and the lower fixing plate 17 rotate together as a whole.

[0047] In addition, sliding grooves 181 are arranged on the surface of the constraint disk 18. There are multiple sliding grooves 181, and the multiple sliding grooves 181 are arranged in a circular array about the axis of the constraint disk 18. The number of sliding grooves 181 is the same as the sum of the numbers of the first membrane bundle 201 and the second membrane bundle 202, that is, each first membrane bundle 201 and second membrane bundle 202 corresponds to a sliding groove 181. The distance between the sliding grooves 181 needs to be adjusted according to the diameter of the membrane bundle. Specifically, when the membrane bundles move along the sliding grooves 181, they will neither get stuck because they are too close to each other nor fail to come into contact and friction because they are too far apart.

[0048] Moreover, a constraint ring sleeve 21 is slidably arranged in each sliding groove 181. The constraint ring sleeve 21 is used to bundle the first membrane bundle 201 or the second membrane bundle 202 passing through the sliding groove 181, so as to prevent the first membrane bundle 201 or the second membrane bundle 202 from rubbing against the inner wall of the sliding groove 181 and damaging the membrane filaments 20. Preferably, two adjacent constraint ring sleeves 21 are respectively located at one end close to the axis of the constraint disk 18 and one end far from the axis of the constraint disk 18 in the sliding groove 181, so that the adjacent first membrane bundle 201 and second membrane bundle 202 are staggered when passing through the sliding groove 181 (refer to Figure 5 shown).

[0049] Specifically, the parts of the first membrane bundle 201 and the second membrane bundle 202 located in the sliding groove 181 are fixedly connected to the constraint ring sleeve 21, so that the first membrane bundle 201 and the second membrane bundle 202 move synchronously with the constraint ring sleeve 21.

[0050] In this implementation scheme, the number of turns of the sliding groove 181 can be adjusted according to the area of the reaction tank 2. If one turn of the sliding groove 181 opened on the surface of the constraint disk 18 is regarded as one turn, when the area of the reaction tank 2 is large, multiple turns of sliding grooves 181 can be set, that is, multiple turns of sliding grooves 181 are set at different radii on the surface of the constraint disk 18, so as to achieve the purpose of increasing the number of membrane bundles and improving the sewage treatment capacity. In the illustration, two turns are set.

[0051] In addition, the number of the constraint discs 18 can be adjusted according to the depth of the reaction tank 2, and one or more constraint discs 18 can be provided. In the illustrated example, five constraint discs 18 are provided. When multiple constraint discs 18 are provided, it can be considered that each constraint disc 18 only has a change in height but no change in angle, that is, the sliding grooves 181 on each constraint disc 18 are all on the same straight line, and the membrane bundles are still arranged in a staggered "X" shape between the constraint discs 18. Exemplarily, if the first membrane bundle 201 passes through the upper constraint disc 18 and is fixedly connected to the constraint ring sleeve 21 near the axis of the constraint disc 18 in the sliding groove 181, when the first membrane bundle 201 reaches the next constraint disc 18, it is fixedly connected to the constraint ring sleeve 21 far from the axis of the constraint disc 18 in the sliding groove 181, and the constraint ring sleeve 21 minimizes the deflection angle of the first membrane bundle 201. Correspondingly, the second membrane bundle 202 closest to the first membrane bundle 201 is fixedly connected to the constraint ring sleeve 21 far from the axis of the constraint disc 18 in the sliding groove 181, and when following the first membrane bundle 201 to reach the next constraint disc 18, it is fixedly connected to the constraint ring sleeve 21 near the axis of the constraint disc 18 in the sliding groove 181. Multiple groups of the first membrane bundles 201 and the second membrane bundles 202 are arranged in this way. When reaching the next constraint disc 18, the first membrane bundle 201 is fixedly connected to the constraint ring sleeve 21 near the axis of the constraint disc 18 in the sliding groove 181, and the second membrane bundle 202 also changes accordingly. Then, as the number of the constraint discs 18 increases, the above process is repeated, so that each first membrane bundle 201 and second membrane bundle 202 has a cross-contact point on both sides in the vertical direction of the constraint disc 18.

[0052] Combined with Figure 4 - Figure 10 , the driving mechanism includes a sliding shaft 24. The sliding shaft 24 is arranged in the reaction tank 2, and the upper fixing plate 16, the lower fixing plate 17 and the constraint discs 18 are all rotatably arranged on the outer peripheral surface of the sliding shaft 24, so that the upper fixing plate 16, the lower fixing plate 17, the constraint discs 18, the first membrane bundle 201 and the second membrane bundle 202 all rotate around the sliding shaft 24.

[0053] In addition, a fixing block 27 is further arranged in the sliding groove 181. One side of the fixing block 27 is fixed on the constraint disc 18, and the fixing block 27 is located at one end of the sliding groove 181 far from the corresponding constraint ring sleeve 21, that is, a fixing block 27 and a constraint ring sleeve 21 are respectively arranged at both ends of a sliding groove 181, and a gap space 183 is left between the fixing block 27 and the inner wall of the sliding groove 181.

[0054] Moreover, a spring 28 is further arranged in the sliding groove 181. One end of the spring 28 is fixedly connected to the constraint ring sleeve 21, and the other end is fixedly connected to the fixing block 27. The spring 28 always exerts a thrust on the constraint ring sleeve 21 away from the fixing block 27.

[0055] In addition, a through groove 182 is further provided on the side wall of the sliding groove 181 , and two adjacent sliding grooves 181 can be connected through the through groove 182 .

[0056] In addition, in order to drive the restraining ring 21 to move, a pull rope 25 is further provided on the restraining disk 18. The pull rope 25 has a fixed end and a free end. The fixed end of the pull rope 25 can be fixedly connected to the fixing block 27 or the restraining ring 21, and the free end sequentially passes through a restraining ring 21, a through groove 182, an adjacent restraining ring 21, a fixing block 27, an adjacent through groove 182 and an adjacent fixing block 27, and the process is repeated until it passes through all the restraining rings 21, as an exemplary description (refer to Figure 8 As shown), the fixed end of the pull rope 25 is fixedly connected to a fixed block 27, and the free end of the pull rope 25 starts from this fixed block 27 and extends from the hollow part of the spring 28 to the constraint ring sleeve 21 in the sliding groove 181 where the fixed block 27 is located, and then the free end passes through the constraint ring sleeve 21 in the diameter direction and winds out along one side of the constraint ring sleeve 21, and then the free end passes through the through groove 182 to the adjacent sliding groove 181, and passes out from the constraint ring sleeve 21 in the sliding groove 181, and then extends along the hollow part of the spring 28 in the sliding groove 181 to the corresponding fixed block 27, and then passes from the fixed block 27 and extends through the corresponding through groove 182 to the next sliding groove 181, and then repeats this process until the pull rope 25 passes through all the constraint ring sleeves 21, and then is led out from the last sliding groove 181 and extends to the winding assembly, and is fixed to the winding assembly.

[0057] Combination Figure 7 - Figure 12 The above-mentioned winding assembly is arranged between the constraint disk 18 and the sliding shaft 24, and the free end of the pull rope 25 is fixedly connected to the winding assembly. The winding assembly is used to reel in or unreel the pull rope 25, so that all the constraint rings 21 are pulled by the pull rope 25 to move in the sliding groove 181, and then the first membrane bundle 201 and the second membrane bundle 202 are staggered and rubbed against each other. When the pull rope 25 is reeled in, the constraint ring 21 compresses the spring 28, and when the pull rope 25 is unreeled, the spring 28 drives the constraint ring 21 to reset.

[0058] Specifically, the winding assembly includes a mounting plate 23, the axis of the mounting plate 23 is fixedly connected to the sliding shaft 24, and the mounting plate 23 is located at a height close to the restraining plate 18, and the mounting plate 23 is used to install the winding assembly.

[0059] In addition, a winding column 32 is also installed on the surface of the restraint disc 18. The winding column 32 is rotatably connected to the restraint disc 18, and the free end of the pulling rope 25 is fixedly connected to the winding column 32. Preferably, the winding column 32 is arranged at a position close to the axis of the restraint disc 18 to facilitate leaving more space for installing the film bundle. To facilitate fixing the pulling rope 25 to the winding column 32, a first guiding block 26 can be fixedly arranged on the surface of the restraint disc 18 near the sliding groove 181, and a second guiding block 261 can be fixedly arranged near the winding column 32. The pulling rope 25 is passed through the first guiding block 26 and the second guiding block 261 in sequence, so as to play a role in guiding and supporting the pulling rope 25.

[0060] Moreover, a winding gear 31 is fixedly arranged on the surface of the winding column 32 on the side away from the restraint disc 18. The winding column 32 rotates together with the winding gear 31. A sliding column 311 is fixedly arranged on the surface of the winding gear 31 on the side away from the winding column 32. Correspondingly, an annular groove 231 is formed on the surface of the mounting disc 23 on the side close to the restraint disc 18, and the sliding column 311 can slide in the annular groove 231. Thus, when the restraint disc 18 rotates, the winding column 32 rotates around the sliding shaft 24. During this process, the sliding shaft 24 remains stationary relative to the mounting disc 23.

[0061] Furthermore, to drive the winding gear 31 to rotate self - sufficiently, an inner - ring arc gear 29 is fixedly arranged on the surface of the mounting disc 23 on the side close to the restraint disc 18. The inner - ring arc gear 29 can be internally meshed with the winding gear 31. Correspondingly, an outer - ring arc gear 30 is fixedly arranged on the surface of the mounting disc 23 on the side close to the restraint disc 18. The outer - ring arc gear 30 can be externally meshed with the winding gear 31. Thus, when the mounting disc 23 drives the winding gear 31 to rotate along the annular groove 231, the winding gear 31 can rotate self - sufficiently under the meshing action with the inner - ring arc gear 29 or the outer - ring arc gear 30. Since the inner - ring arc gear 29 and the outer - ring arc gear 30 are respectively located on different sides of the winding gear 31, the rotation direction of the winding gear 31 when meshing with the inner - ring arc gear 29 is opposite to the rotation direction when meshing with the outer - ring arc gear 30. And the sum of the angles occupied by the arc length of the inner - ring arc gear 29 about the axis of the sliding shaft 24 and the angle occupied by the outer - ring arc gear 30 about the axis of the sliding shaft 24 is 360°, so that the winding gear 31 disengages from the inner - ring arc gear 29 or the outer - ring arc gear 30 and just meshes with the outer - ring arc gear 30 or the inner - ring arc gear 29. Preferably, the inner - ring arc gear 29 and the outer - ring arc gear 30 have the same number of teeth, so that the rotation angle of the winding gear 31 when passing through the inner - ring arc gear 29 is the same as the rotation angle when passing through the outer - ring arc gear 30. In this way, when the mounting disc 23 rotates one week, the winding amount and the unwinding amount of the pulling rope 25 are the same, avoiding excessive stretching of the pulling rope 25.

[0062] In this embodiment, two pull ropes 25 can be provided, that is, a set of restraint ring sleeves 21 on a restraint disc 18 is divided into two groups, and each group is pulled by a pull rope 25 respectively. At this time, two sets of winding gears 31 and winding columns 32 can be symmetrically arranged about the axis of the sliding shaft 24, and the free ends of the two pull ropes 25 are fixedly connected to the two winding columns 32 respectively (refer to Figure 8 as shown), so that the pulling length of the pull rope 25 when the restraint disc 18 rotates one circle can be increased. For more accurate adjustment of the pulling length, it can be achieved by adjusting the module of the winding gear 31, the inner arc gear 29 and the outer arc gear 30.

[0063] Combined with Figure 9 and Figure 15 , in order to facilitate the sliding of the parts of the first film bundle 201 and the second film bundle 202 in the sliding groove 181 along the sliding groove 181, preferably, the restraint ring sleeve 21 is composed of a glue layer 211, a sleeve layer 212 and a through hole 213. The glue layer 211 is used to fix a plurality of film filaments 20, and the glue layer 211 is made of a flexible material, optionally, such as polyurethane glue or silicone. The sleeve layer 212 is sleeved in the middle of the restraint ring sleeve 21, and the sleeve layer 212 is made of a rigid material, optionally, such as corrosion-resistant metal or plastic, to protect the glue layer 211. The diameter of the sleeve layer 212 is smaller than the diameter of the first film bundle 201 or the second film bundle 202 outside the sliding groove 181, so that a stepped portion 214 is formed on both sides of the restraint ring sleeve 21 in the sliding groove 181. The diameter of the stepped portion 214 is larger than the diameter of the sleeve layer 212, so as to prevent the restraint ring sleeve 21 from falling off when sliding inside the sliding groove 181. A through hole 213 is also opened on the sleeve layer 212, and the through hole 213 penetrates the restraint ring sleeve 21 to facilitate the pull rope 25 to pass through the restraint ring sleeve 21.

[0064] During production, a plurality of film filaments 20 can be placed in the required positions first, and the sleeve layer 212 is sleeved at the positions where the plurality of film filaments 20 pass through the sliding groove 181. Then, a tool is used to pass through the sleeve layer 212 to form the through hole 213, and then glue filling treatment is carried out to form the glue layer 211. The stepped portion 214 can be formed by a corresponding mold, and then the tool is drawn out from the formed restraint ring sleeve 21.

[0065] Optionally, an elastic rod 33 can be provided at the central part of the plurality of film filaments 20. The elastic rod 33 is fixed between the restraint ring sleeves 21, and the elastic rod 33 is made of a flexible material and can deform, so as to improve the friction effect when the first film bundle 201 and the second film bundle 202 rub against each other.

[0066] Combined with Figure 2 and Figure 3, at the center of the reaction tank 2, multiple groups of central columns 13, fixing components, restraining components, and driving mechanisms are fixedly installed, and they are arranged in an annular array around the axis of the central column 13. The multiple groups of fixing components, restraining components, and driving mechanisms can rotate around the axis of the central column 13, thereby forming a cross-flow on the surface of the membrane filaments 20, generating shear force and disturbing force, so that macromolecules such as biological aggregates are detached from the surface of the membrane filaments 20, further extending the operation cycle of the membrane filaments 20.

[0067] Combined with Figure 2 , Figure 3 and Figure 17 , in order to drive the multiple groups of fixing components, restraining components, and driving mechanisms to rotate around the axis of the central column 13, a planetary gear 10 is fixedly connected to the upper surface of each upper fixing plate 16. A sun gear 11 is fixedly installed on the outer peripheral surface of the central column 13. The planetary gear 10 meshes with the sun gear 11, and an external gear ring 9 is provided on the side of the planetary gear 10 away from the sun gear 11, and the planetary gear 10 meshes with the external gear ring 9. In order to facilitate the installation of the external gear ring 9, an upper support platform 12 can be provided below the external gear ring 9. The upper support platform 12 is fixedly connected to the base 1, and the inner radius of the upper support platform 12 is smaller than the inner radius of the external gear ring 9, so as to facilitate the removal of the fixing components, restraining components, and driving mechanisms from the reaction tank 2. A driving device 8 is provided on the base 1. The driving device 8 is used to drive the external gear ring 9 to rotate. The driving device 8 is a combination of a motor and a gear. Thus, the driving device 8 can drive the external gear ring 9 to rotate, and the external gear ring 9 then drives the planetary gear 10 to rotate around the sun gear 11. The sun gear 11 always remains stationary, so that all the membrane filaments 20 rotate around the central column 13. By adjusting the module of the sun gear 11, the external gear ring 9, and the planetary gear 10, the smooth operation of the entire transmission mechanism can be ensured.

[0068] Combined with Figure 14 , in order to support the multiple groups of fixing components, restraining components, and driving mechanisms, a rotating disk 22 is provided below the lower fixing plate 17. The lower fixing plate 17 is rotatably installed on the rotating disk 22, and the rotating disk 22 is rotatably connected to the central column 13, so that the lower fixing plate 17 can rotate around the axis of the central column 13 while rotating on its own under the support of the rotating disk 22.

[0069] In addition, in order to keep the sliding shaft 24 and the restraining disk 18 in a stationary state relative to each other when rotating around the axis of the central column 13, the bottom end of the sliding shaft 24 passes through the rotating disk 22, and an annular rail 34 is fixedly installed at the bottom of the reaction tank 2. An arc groove 241 is opened at the bottom end of the sliding shaft 24. When the sliding shaft 24 rotates around the central column 13, the arc groove 241 at the bottom end slides on the annular rail 34, thereby restricting the self-rotation of the sliding shaft 24 through the cooperation of the annular rail 34 and the arc groove 241.

[0070] Combined with Figure 15 and Figure 16, at least one reaction tank 2 is provided. When multiple reaction tanks 2 are provided, a water passing trough 15 is provided between two adjacent reaction tanks 2. The water passing trough 15 is located on both sides of the reaction tank 2. As the outer gear ring 9 rotates, the membrane filaments 20 will cause the sewage in the reaction tank 2 to flow in the same direction as the outer gear ring 9, so that part of the sewage enters another reaction tank 2 through the water passing trough 15 in one reaction tank 2. Preferably, the water outlet area of the water passing trough 15 is smaller than the water inlet area, so as to increase the flow rate of the sewage flowing out of the water passing trough 15, thereby increasing the impact of the sewage on the membrane filaments 20.

[0071] In addition, a water baffle 14 is fixedly provided in the reaction tank 2. The distance between the water baffle 14 and the inner wall of the reaction tank 2 gradually increases along the rotation direction of the outer gear ring 9. Thus, when the sewage flows in one reaction tank 2, it will be blocked by the water baffle 14, thereby increasing the shear force and disturbing force of the cross-flow.

[0072] Combined with Figure 17 , in order to facilitate the conveyance of the treated clean water, a second connecting water pipe 71 is fixedly provided on the planet gear 10. The second connecting water pipe 71 passes downward through the planet gear 10, so that the first membrane bundle 201 and the second membrane bundle 202 are communicated with the second connecting water pipe 71. A second annular water pipe 7 is rotatably provided at the top end of the sliding shaft 24. The second annular water pipe 7 can rotate around the sliding shaft 24, and the second annular water pipe 7 is communicated with the second connecting water pipe 71. The clean water can enter the second connecting water pipe 71 from the membrane filaments 20 and then enter the second annular water pipe 7.

[0073] Moreover, a first annular water pipe 6 is rotatably provided at the top end of the central column 13. The first annular water pipe 6 can rotate around the central column 13. A first connecting water pipe 61 is communicated with the second annular water pipe 7, and the first connecting water pipe 61 is communicated with the first annular water pipe 6. The first annular water pipe 6 is also communicated with the water collecting pipe 5. Thus, the water entering the second annular water pipe 7 can enter the first annular water pipe 6 through the first connecting water pipe 61 and then enter the water collecting pipe 5. One end of the water collecting pipe 5 can be provided with a water pump for water intake.

[0074] Combined with Figure 14 , when the reaction tank 2 needs aeration, an air conveying pipe 3 can be additionally provided and extended to the bottom of the reaction tank 2. There is a certain height between the rotating disk 22 and the bottom surface of the reaction tank 2, so as to facilitate the arrangement of an air diffusing pipe 4 between the rotating disk 22 and the bottom surface of the reaction tank 2. The air diffusing pipe 4 can be arranged in a ring shape. In addition, air holes need to be provided on the rotating disk 22 to facilitate the upward flow of gas. Preferably, the air diffusing pipe 4 is provided with two layers inside and outside to increase the aeration area. When the two layers of air diffusing pipes 4 are respectively located on the inner arc surface and the outer arc surface of the ring rail 34, a communicating air pipe penetrating the ring rail 34 can be provided at the lower side of the ring rail 34, and the two layers of air diffusing pipes 4 are connected through the communicating air pipe.

[0075] When in use (working), the outer ring gear 9 is driven to rotate by the driving device 8, and the outer ring gear 9 drives the planetary gear 10 to rotate around the sun gear 11, thereby driving multiple groups of fixed components, constraint components, driving mechanisms and all membrane wires 20 to rotate around the axis of the central column 13. The bottom end of the fixed component is rotatably connected to the rotating disk 22 and is supported by the rotating disk 22.

[0076] When the outer gear ring 9 rotates, it will also drive the fixed component to rotate around the sliding shaft 24, so that the constraint disk 18 rotates around the sliding shaft 24, and the winding gear 31 rotates with the constraint disk 18 and engages with the inner ring arc gear 29 or the outer ring arc gear 30, thereby driving the pull rope 25 to be wound or unwound. When the pull rope 25 is wound, the stretching 25 will pull the first membrane bundle 201 and the second membrane bundle 202 to compress the spring 28, so that the first membrane bundle 201 and the second membrane bundle 202 move alternately and rub against each other. When the pull rope 25 is unwound, the spring 28 drives the constraint ring sleeve 21 to reset, thereby resetting the first membrane bundle 201 and the second membrane bundle 202.

[0077] The clean water filtered out from the reaction tank by the membrane fibers 20 enters the second annular water pipe 7 through the second connecting water pipe 71 , then enters the first connecting water pipe 61 , and finally enters the water collection pipe 5 through the first annular water pipe 6 .

Claims

1. A chemical production wastewater treatment device, comprising a base (1) and membrane fibers (20), wherein a reaction pool (2) is provided in the base (1), characterized in that: Also includes: A fixing assembly, the fixing assembly being arranged in the reaction tank (2), the fixing assembly comprising an upper fixing plate (16) and a lower fixing plate (17) arranged side by side in an upper and lower manner; A first membrane bundle (201) and a second membrane bundle (202), wherein the first membrane bundle (201) and the second membrane bundle (202) are each composed of a plurality of membrane filaments (20) arranged in parallel, and the two ends of the first membrane bundle (201) and the second membrane bundle (202) are respectively fixed on an upper fixed plate (16) and a lower fixed plate (17), and the first membrane bundle (201) and the second membrane bundle (202) have at least one cross contact point between the upper fixed plate (16) and the lower fixed plate (17); A driving mechanism, the driving mechanism being arranged between the upper fixed plate (16) and the lower fixed plate (17), and the driving mechanism being used to drive the first membrane bundle (201) and the second membrane bundle (202) to move, so as to continuously change the position of the cross contact point, so as to cause the first membrane bundle (201) and the second membrane bundle (202) to rub against each other to remove impurities on their own surfaces; It also includes a restraining assembly, which is arranged between the upper fixing plate (16) and the lower fixing plate (17), and includes: A restraining plate (18), the restraining plate (18) being arranged between an upper fixing plate (16) and a lower fixing plate (17), a connecting rod (19) being fixedly arranged between the upper fixing plate (16) and the lower fixing plate (17), and the connecting rod (19) passing through the restraining plate (18) and being fixedly connected to the restraining plate (18); A sliding groove (181), the sliding groove (181) being formed on the restraining disk (18), a plurality of the sliding grooves (181) being provided, and the plurality of sliding grooves (181) being arranged in a ring array about the axis of the restraining disk (18); A restraining ring sleeve (21), wherein a restraining ring sleeve (21) is slidably disposed in each of the sliding grooves (181), and two adjacent restraining ring sleeves (21) are respectively located in the sliding groove (181) at one end close to the axis of the restraining disk (18) and at one end away from the axis of the restraining disk (18); The adjacent first membrane bundle (201) and second membrane bundle (202) pass through two adjacent sliding grooves (181) respectively, and the parts of the first membrane bundle (201) and the second membrane bundle (202) located in the sliding groove (181) are fixedly connected to the restraining ring sleeve (21); Each of the first membrane bundle (201) and the second membrane bundle (202) has a cross contact point on both sides of the restraining disk (18) in the vertical direction; The driving mechanism comprises: A sliding shaft (24), the sliding shaft (24) being arranged in the reaction tank (2), the upper fixing plate (16), the lower fixing plate (17) and the restraining plate (18) being rotatably arranged on the outer peripheral surface of the sliding shaft (24); a fixed block (27), the fixed block (27) being disposed in the sliding groove (181) and being fixedly connected to the restraining plate (18), and the fixed block (27) being located at one end of the sliding groove (181) away from the corresponding restraining ring sleeve (21), and a gap space (183) being left between the fixed block (27) and the inner wall of the sliding groove (181); A spring (28), wherein the spring (28) is disposed in the sliding groove (181), and one end of the spring (28) is fixedly connected to the restraining ring sleeve (21), and the other end of the spring (28) is fixedly connected to the fixing block (27); A through groove (182), wherein the through groove (182) is formed on a side wall of the sliding groove (181), and the through groove (182) is used to connect two adjacent sliding grooves (181); A pull rope (25), the pull rope (25) being arranged on the restraining disk (18), the pull rope (25) having a fixed end and a free end, the fixed end being fixedly connected to the fixing block (27) or the restraining ring sleeve (21), the free end sequentially passing through one of the restraining ring sleeves (21), the through groove (182), the adjacent restraining ring sleeve (21), the fixing block (27), the adjacent through groove (182) and the adjacent fixing block (27), and the process is repeated until the restraining ring sleeves (21) are passed through, after which the free end is led out toward the axis of the sliding shaft (24); A winding assembly is provided between the restraining disk (18) and the sliding shaft (24); the free end of the pull rope (25) is fixedly connected to the winding assembly; the winding assembly is used to reel in or unreel the pull rope (25) so that the restraining ring sleeve (21) slides in the sliding groove (181).

2. A chemical production wastewater treatment device according to claim 1, characterized in that: The winding assembly comprises: A mounting plate (23), wherein the axis of the mounting plate (23) is fixedly connected to the sliding shaft (24), and the mounting plate (23) is arranged at a position close to the restraining plate (18); A winding column (32), the winding column (32) being rotatably mounted on the surface of the restraining disk (18), and the free end of the pull rope (25) being fixedly connected to the winding column (32); A winding gear (31), the winding gear (31) being fixedly mounted on a surface of a winding column (32) on a side away from the restraining disk (18), and a sliding column (311) being fixedly mounted on a surface of the winding gear (31) on a side away from the winding column (32); An annular groove (231), the annular groove (231) being formed on a surface of the mounting plate (23) on a side close to the restraining plate (18), and the sliding column (311) being capable of sliding in the annular groove (231); an inner arc gear (29), the inner arc gear (29) being fixedly mounted on a surface of the mounting plate (23) close to the restraining plate (18), and the inner arc gear (29) being located on a side of the annular groove (231) close to the axis of the mounting plate (23), and the inner arc gear (29) being capable of meshing with the winding gear (31); an outer ring arc gear (30), the outer ring arc gear (30) being fixedly mounted on a surface of the mounting plate (23) close to the restraining plate (18), the outer ring arc gear (30) being located on a side of the annular groove (231) away from the axis of the mounting plate (23), and the outer ring arc gear (30) being capable of externally meshing with the winding gear (31); When the winding gear (31) is separated from the inner arc gear (29), it meshes with the outer arc gear (30); when the winding gear (31) is separated from the outer arc gear (30), it meshes with the inner arc gear (29).

3. A chemical production wastewater treatment device according to claim 1, characterized in that: The restraining ring sleeve (21) is composed of a bonding layer (211), a sleeve layer (212) and a through hole (213); The adhesive layer (211) is used to fix a plurality of membrane filaments (20), and the adhesive layer (211) is made of a flexible material; The sleeve layer (212) is sleeved on the middle part of the restraining ring sleeve (21), and the sleeve layer (212) is made of a rigid material; The diameter of the sleeve layer (212) is smaller than the diameter of the first membrane bundle (201) or the second membrane bundle (202) located outside the sliding groove (181), so that the constraint ring sleeve (21) forms a step portion (214) on both sides of the sliding groove (181); The through hole (213) is opened on the sleeve layer (212) and passes through the restraining ring sleeve (21).

4. A chemical production wastewater treatment device according to claim 2, characterized in that: A central column (13) is fixedly provided at the center of the reaction pool (2), and the fixing components, the restraining components and the driving mechanism are provided in multiple groups and are arranged in a ring array about the axis of the central column (13).

5. A chemical production wastewater treatment device according to claim 4, characterized in that: A planetary gear (10) is fixedly connected to the upper surface of each upper fixed plate (16), a sun gear (11) is fixedly provided on the outer peripheral surface of the central column (13), and the planetary gears (10) are meshed with the sun gear (11); An outer gear ring (9) is provided on a side of the planetary gear (10) away from the sun gear (11), and the planetary gear (10) is meshed with the outer gear ring (9); The base (1) is provided with a driving device (8), and the driving device (8) is used to drive the outer gear ring (9) to rotate.

6. A chemical production wastewater treatment device according to claim 4, characterized in that: A rotating disk (22) is provided below the lower fixed plate (17), the lower fixed plate (17) is rotatably mounted on the rotating disk (22), and the rotating disk (22) is rotatably connected to the central column (13); The bottom end of the sliding shaft (24) passes through the rotating disk (22); A ring rail (34) is fixedly provided at the bottom of the reaction pool (2), and an arc groove (241) is provided at the bottom end of the sliding shaft (24), and the arc groove (241) is capable of sliding on the ring rail (34).

7. A chemical production wastewater treatment device according to claim 6, characterized in that: The reaction pool (2) is provided with at least one; A water channel (15) is provided between two adjacent reaction tanks (2), wherein the water outlet area of ​​the water channel (15) is smaller than the water inlet area; A water baffle (14) is fixedly provided in the reaction tank (2), and the distance between the water baffle (14) and the inner wall of the reaction tank (2) gradually increases along the rotation direction of the outer gear ring (9).

8. A chemical production wastewater treatment device according to claim 5, characterized in that: A second connecting water pipe (71) is fixedly provided on the planetary wheel (10), and the first membrane bundle (201) and the second membrane bundle (202) are in communication with the second connecting water pipe (71); A second annular water pipe (7) is rotatably provided at the top end of the sliding shaft (24), and the second annular water pipe (7) is in communication with a second connecting water pipe (71); A first annular water pipe (6) is rotatably provided at the top end of the central column (13); a first connecting water pipe (61) is connected to the second annular water pipe (7), and the first connecting water pipe (61) is connected to the first annular water pipe (6); The first annular water pipe (6) is in communication with the water collecting pipe (5).

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