Built-in water distribution device of anaerobic jar and water distribution method

Abstract

The invention relates to the field of water treatment equipment, in particular to an anaerobic jar built-in water distribution device and a water distribution method.The anaerobic jar built-in water distribution device comprises a water collecting tank, a water outlet mechanism for evenly distributing water into an anaerobic jar in a one-way rotation mode is arranged on the water collecting tank, and the water distribution device further comprises a mixing mechanism for three-dimensionally mixing anaerobic sludge and wastewater; the moving assembly is matched with the water collecting tank, so that the multiple groups of water conveying pipes can rotate in one direction and move up and down, the water distribution direction is dynamically adjusted, and each group of water conveying pipes can deflect and extend the water distribution range through supporting universal wheels at the bottom of the anaerobic jar while the water conveying pipes move downwards; according to the invention, the push plate is cooperated with the double-spiral blade rod to realize three-dimensional mixing of anaerobic sludge and wastewater, so that the anaerobic sludge and wastewater are efficiently stirred, and the water treatment efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the field of water treatment equipment, and specifically to an internal water distribution device and method for an anaerobic tank. Background Art

[0002] The internal water distribution device of an anaerobic tank is one of the core components of a wastewater anaerobic treatment system. Its function is to evenly distribute wastewater inside the anaerobic tank and at the same time promote the full mixing of wastewater and anaerobic sludge. By optimizing the water distribution and mixing effects, the reaction efficiency of anaerobic digestion can be effectively improved, avoiding local sludge deposition or short-circuiting phenomena, thereby ensuring the stability and treatment capacity of the sewage treatment process.

[0003] Traditional anaerobic tank water distribution devices mostly adopt a fixed structure, such as the combination of a water collection tank and capillary water pipes below it. Specifically, the water collection tank is fixedly installed on the upper part of the anaerobic tank, and wastewater is introduced into the tank through downward-extending capillary water pipes. The wastewater is dispersed and flows through the capillary water pipes to achieve uniform distribution.

[0004] However, the existing water distribution devices still have deficiencies. First, both the water collection tank and the capillary water pipes are fixedly arranged and cannot dynamically adjust the water distribution direction and range, resulting in insufficient uniformity of wastewater distribution, especially prone to water distribution dead corners at the edge of the tank body or in high-viscosity wastewater. Second, the traditional device relies on the impact force of water flow to generate a self-stirring effect, and it is difficult to efficiently stir high-concentration anaerobic sludge and wastewater, with poor mixing effect, and prone to sludge caking or incomplete reaction.

[0005] The above problems ultimately lead to a reduction in the treatment efficiency of the anaerobic tank, energy waste, and unstable effluent water quality, and there is an urgent need for technical improvement to enhance the overall performance. Summary of the Invention

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: an internal water distribution device and method for an anaerobic tank, including a water collection tank, on which there is a water outlet mechanism that evenly distributes water into the anaerobic tank in a one-way rotation manner, and the water distribution device also includes a mixing mechanism that three-dimensionally stirs and mixes anaerobic sludge and wastewater.

[0007] The water outlet mechanism includes a number of groups of water pipes arranged at equal intervals along the circumference of the water collection tank on its lower side. Each group consists of multiple water pipes. The water pipes within the same group are connected end to end in sequence up and down in a hinged manner. The adjacent water pipes within the same group and between the uppermost water pipe and the water collection tank are connected through hoses.

[0008] A universal wheel is fixedly connected to the lower side of the lowermost water pipe, and a moving component for driving it to move up and down and rotate in one direction is arranged outside the water collection tank. Except for the uppermost water pipe, water outlets are equally spaced on the remaining water pipes.

[0009] The mixing mechanism includes push plates that are equidistantly arranged along the circumference of the water collecting tank through connecting components. A double-helical blade rod is fixedly installed on the lower side of the water collecting tank. When the water collecting tank rotates, the push plates cooperate with the double-helical blade rod to reciprocally push the sludge and wastewater inside the anaerobic tank.

[0010] Preferably, a hinge block is fixedly installed at the upper end of the water delivery pipe. Except for the lowermost water delivery pipe, hinge frames with a U-shaped structure are fixedly installed at the lower ends of the remaining water delivery pipes and the lower side of the water collecting tank. The hinge block is hinged to the hinge frame at the corresponding position.

[0011] Preferably, a limiting support plate is fixedly installed on the side surface of the hinge block. An arc-shaped groove is formed on the vertical section of the hinge frame on the side corresponding to the limiting support plate. The limiting support plate is slidably connected to the inside of the arc-shaped groove through a convex column at its upper end.

[0012] Preferably, the moving component includes two vertically arranged toothed groove ring plates movably arranged outside the cylindrical surface of the water collecting tank. The toothed grooves of the two toothed groove ring plates face each other and are staggeredly arranged. A connecting cylinder is fixedly installed outside the two toothed groove ring plates. Two symmetrically arranged linkage rods are fixedly installed outside the water collecting tank and are located between the two toothed groove ring plates.

[0013] Preferably, the connecting component includes a driven ring rotatably arranged outside the connecting cylinder. A plurality of connecting plate members are fixedly installed along the circumference of the lower end of the outside of the water collecting tank at equal intervals. The end of the connecting plate member far from the axis of the water collecting tank is rotatably connected to the push plate. The connecting plate member is slidably connected to the driven ring up and down.

[0014] Preferably, the part of the push plate in the same rotation direction as the water collecting tank has an arc-shaped structure, and the part of the push plate in the opposite rotation direction to the water collecting tank has an inclined plate structure that inclines towards the axis of the water collecting tank. A double-ball head rod is ball-joint connected between the upper side of the inclined plate structure of the push plate and the driven ring.

[0015] Preferably, two groups of centrally concentrated plates are symmetrically arranged up and down on the side of the push plate close to the axis of the water collecting tank. The centrally concentrated plates have a structure that gradually inclines towards the middle of the push plate along the rotation direction of the water collecting tank. When the upper and lower symmetric spiral blades of the double-helical blade rod rotate, the sludge and wastewater in the middle are pushed to the upper and lower sides and the outside.

[0016] Preferably, a fixed seat is fixedly connected inside the anaerobic tank through bolts. Two groups of upper and lower staggered rotary cutting rake blades are arranged at equal intervals in the vertical direction in the middle of the double-helical blade rod. One group is fixedly connected to the double-helical blade rod, and the other group is slidably connected to the fixed seat up and down and is rotatably connected to the double-helical blade rod.

[0017] Preferably, a ring frame is rotatably arranged on the upper part of the water collecting tank. An L-shaped water inlet pipe is fixedly installed inside the ring frame. The vertical section of the water inlet pipe is located at an eccentric position inside the water collecting tank. A filter screen is arranged on the inner side of the water collecting tank and below the water inlet pipe. A partition plate is fixedly installed above the filter screen.

[0018] Preferably, the present invention also provides an anaerobic tank water distribution method, and the steps are as follows: S1. Connect the water collecting tank to the upper part of the anaerobic tank through a moving component, so that the water delivery pipe is located inside the anaerobic tank, and introduce the wastewater into the anaerobic tank through the water collecting tank and the water delivery pipe.

[0019] S2. Drive the water collecting tank to move up and down and rotate unidirectionally through the moving component, so that while the water collecting tank drives the water delivery pipe to distribute water evenly, the anaerobic sludge and the wastewater are stirred.

[0020] S3. The water collecting tank drives the water delivery pipe to move up and down, so that the water delivery pipe is supported by the bottom of the anaerobic tank through the universal wheels, so that the water delivery pipe reciprocates radially along the anaerobic tank, increasing the water distribution uniformity.

[0021] S4. The water collecting tank drives the push plate and the double spiral leaf rod to move synchronously, so that the water collecting tank drives the push plate to push the anaerobic sludge and the wastewater to move up and down and back and forth left and right inside the anaerobic tank for mixing.

[0022] The beneficial effects of the present invention are as follows: First, the present invention adopts a moving component to cooperate with the water collecting tank, so that multiple groups of water delivery pipes can rotate unidirectionally and move up and down, thereby dynamically adjusting the water distribution direction. While the water delivery pipe moves downward, the universal wheels are supported by the bottom of the anaerobic tank, so that each group of water delivery pipes can deflect and extend the water distribution range, effectively eliminating the water distribution dead corners at the edge of the tank body and for high-viscosity wastewater, and significantly improving the water distribution uniformity.

[0023] Second, the present invention adopts the cooperation of the push plate, the double spiral leaf rod and the double ball head rod in the mixing mechanism, and can drive the anaerobic sludge and the wastewater to be pushed inward through the arc-shaped and inclined plate structures of the push plate driven by the rotation of the water collecting tank, and cooperate with the upper and lower symmetric spiral leaves of the double spiral leaf rod to push the anaerobic sludge and the wastewater outward, so as to realize the three-dimensional mixing of the anaerobic sludge and the wastewater, and then efficiently stir the anaerobic sludge and the wastewater, improving the water treatment efficiency.

[0024] Third, the present invention adopts the rotary cutting rake knives slidably connected to the fixed seat and the rotary cutting rake knives fixedly connected to the double spiral leaf rod to form an alternating shearing effect of two groups of rotary cutting rake knives, further crushing the anaerobic sludge agglomerates, and at the same time guiding the concentrated flow of the anaerobic sludge and the wastewater to the rotary cutting rake knives through the concentrating plate, strengthening the shearing effect and improving the mixing effect of the anaerobic sludge and the wastewater.

[0025] IV. The present invention uses a filter screen in the water collecting tank to filter impurities in the wastewater, preventing the impurities from clogging the water outlet of the water delivery pipe, thereby ensuring the continuity and uniformity of water distribution. Moreover, the filter screen rotates synchronously with the water collecting tank, enabling the filter screen to change to different positions in real time to filter the wastewater and ensuring the filtering effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention will be further described below in conjunction with the drawings and embodiments.

[0027] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0028] Figure 2 It is a cross-sectional view of the water collecting tank, connecting cylinder, linkage rod and toothed groove ring plate in the present invention.

[0029] Figure 3 It is a front view of the water collecting tank, hinge block, water delivery pipe and hinge frame in the present invention.

[0030] Figure 4 It is a partial cross-sectional view of the water delivery pipe, hinge block, hinge frame and limiting support plate in the present invention.

[0031] Figure 5 It is a schematic diagram of the structure of the driven ring, push plate, central plate and connecting plate member in the present invention.

[0032] Figure 6 It is a schematic diagram of the structure of the water collecting tank, double spiral leaf rod, rotary cutting harrow knife and fixed seat in the present invention.

[0033] Figure 7 It is a top view of the ring frame, connecting cylinder, connecting plate member and push plate in the present invention (the direction of the arrow in the figure is the rotation direction).

[0034] In the figure: 1. Water collecting tank; 2. Water outlet mechanism; 3. Mixing mechanism; 21. Water delivery pipe; 22. Universal wheel; 23. Moving component; 24. Ring frame; 31. Connecting component; 32. Push plate; 33. Double spiral leaf rod; 211. Hinge block; 212. Hinge frame; 213. Limiting support plate; 231. Toothed groove ring plate; 232. Connecting cylinder; 233. Linkage rod; 241. Water inlet pipe; 242. Filter screen; 243. Partition plate; 311. Driven ring; 312. Connecting plate member; 313. Double ball head rod; 321. Central plate; 331. Fixed seat; 332. Rotary cutting harrow knife. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0035] The embodiments of the present invention will be described in detail below. The embodiments described below are exemplary and are only used to explain the present invention and should not be construed as a limitation to the present invention. For those technologies or conditions not specified in the embodiments, they shall be carried out according to the technologies or conditions described in the literature in the field or according to the product instructions.

[0036] Refer to Figure 1 , an internal water distribution device for an anaerobic tank, including a water collecting tank 1, a water outlet mechanism 2 arranged on the water collecting tank 1 to evenly distribute water into the anaerobic tank in a one-way rotation manner, and the water distribution device further includes a mixing mechanism 3 for three-dimensionally stirring and mixing anaerobic sludge and wastewater.

[0037] When the wastewater needs to be introduced into the anaerobic tank, first install the water collecting tank 1 at the upper part of the anaerobic tank, and then introduce the wastewater into the water collecting tank 1. The water collecting tank 1 evenly introduces the wastewater into the anaerobic tank through the water outlet mechanism 2, so that the wastewater and the anaerobic sludge are evenly mixed. At the same time, move the water collecting tank 1 up and down, so that the water collecting tank 1 drives the water outlet mechanism 2 to dynamically adjust the water distribution direction and range, and at the same time the water collecting tank 1 drives the mixing mechanism 3 to three-dimensionally stir and mix the wastewater and the anaerobic sludge, thereby improving the treatment efficiency of the anaerobic tank for the wastewater.

[0038] Refer to Figure 1 、 Figure 3 and Figure 4 , the water outlet mechanism 2 includes several groups of water delivery pipes 21 arranged at equal intervals along the circumferential direction of the water collecting tank 1 on its lower side. Each group consists of multiple water delivery pipes 21. The water delivery pipes 21 within the same group are sequentially connected end to end in a hinged manner from top to bottom. The adjacent water delivery pipes 21 within the same group and between the uppermost water delivery pipe 21 and the water collecting tank 1 are connected through hoses.

[0039] Refer to Figure 3 and Figure 4 , a hinge block 211 is fixedly installed at the upper end of the water delivery pipe 21. Except for the lowermost water delivery pipe 21, hinge frames 212 in a U-shaped structure are fixedly installed at the lower ends of the remaining water delivery pipes 21 and the lower side of the water collecting tank 1. The hinge block 211 is hinged to the corresponding hinge frame 212.

[0040] Refer to Figure 1 and Figure 3 , a universal wheel 22 is fixedly connected to the lower side of the lowermost water delivery pipe 21. A moving component 23 for driving it to move up and down and rotate in one direction is arranged outside the water collecting tank 1. Except for the uppermost water delivery pipe 21, water outlet ports are evenly arranged on the remaining water delivery pipes 21.

[0041] Refer to Figure 1 、 Figure 2 and Figure 3 , the moving component 23 includes two vertically arranged toothed groove ring plates 231 movably arranged outside the cylindrical surface of the water collecting tank 1. The toothed groove openings of the two toothed groove ring plates 231 face each other and are arranged staggeredly. A connecting cylinder 232 is fixedly installed on the outer sides of the two toothed groove ring plates 231. Two symmetrically arranged linkage rods 233 are fixedly installed outside the water collecting tank 1 and between the two toothed groove ring plates 231.

[0042] It should be noted that, asFigure 2 As shown, the bottom of the tooth groove of the upper tooth groove ring plate 231 corresponds exactly to the middle of the inclined side of the tooth groove of the lower tooth groove ring plate 231, and the bottom of the tooth groove of the lower tooth groove ring plate 231 corresponds exactly to the middle of the inclined side of the tooth groove of the upper tooth groove ring plate 231. A flange is provided on the outer side of the upper end of the connecting cylinder 232.

[0043] Refer to Figure 1 and Figure 2 , a ring frame 24 is rotatably provided on the upper part of the water collecting tank 1. An L-shaped water inlet pipe 241 is fixedly installed inside the ring frame 24. The vertical section of the water inlet pipe 241 is located at an eccentric position inside the water collecting tank 1. A filter screen 242 is provided inside the water collecting tank 1 and below the water inlet pipe 241. A partition plate 243 is fixedly installed above the filter screen 242.

[0044] It should be noted that the upper side of the anaerobic tank drives the ring frame 24 to move up and down reciprocally through a fixedly installed reciprocating pushing structure. The reciprocating pushing structure can adopt a hydraulic cylinder in the prior art. The cylinder body of the hydraulic cylinder is fixedly installed on the upper side of the anaerobic tank, and the telescopic section of the hydraulic cylinder is fixedly connected to the upper side surface of the ring frame 24. By reciprocally telescoping the telescopic section of the hydraulic cylinder, the ring frame 24 is driven to move up and down reciprocally.

[0045] When it is necessary to introduce the wastewater into the anaerobic tank, the operator fixedly installs the flange on the connecting cylinder 232 on the upper end of the anaerobic tank by means of bolt connection. At the same time, the connecting cylinder 232 drives the water collecting tank 1 to be located at the coaxial position of the anaerobic tank through the two tooth groove ring plates 231, and the water collecting tank 1 drives the lower water delivery pipe 21 to be located inside the anaerobic tank. Each group of water delivery pipes 21 naturally hangs down under the action of gravity, so that the lowermost water delivery pipe 21 drives the universal wheel 22 to abut against the bottom wall of the anaerobic tank.

[0046] Subsequently, the wastewater is introduced into the inside of the water collecting tank 1 through the water inlet pipe 241. The wastewater falls to the eccentric position of the filter screen 242 through the water inlet pipe 241, and the filter screen 242 is separated into several filtering areas by the partition plate 243, so that the filtering area corresponding to the lower part of the vertical section of the water inlet pipe 241 filters the impurities in the wastewater, preventing the impurities from blocking the water outlet of the water delivery pipe 21 and causing uneven water distribution.

[0047] After that, the wastewater filtered in the water collecting tank 1 flows into the inside of the water delivery pipe 21. Then, the wastewater flows into the anaerobic tank through the water outlet on the water delivery pipe 21, and the wastewater is mixed with the anaerobic sludge. Through the reaction of the organic matter in the wastewater with the anaerobic sludge, the wastewater is treated.

[0048] In the initial state, the water collecting tank 1 is located at a lower position relative to the connecting cylinder 232, so that at this time, the linkage rod 233 on the water collecting tank 1 moves to the bottom position of the tooth groove of the lower tooth groove ring plate 231. The water collecting tank 1 drives the whole water delivery pipe 21 to be in a lower position. Through the support of the universal wheels 22 by the bottom of the anaerobic tank, each group of water delivery pipes 21 deflects and extends radially outward along the anaerobic tank.

[0049] Refer to Figure 4 , a limiting support plate 213 is fixedly installed on the side surface of the hinge block 211. An arc-shaped groove is formed on the vertical section of the hinge frame 212 corresponding to one side of the limiting support plate 213. The limiting support plate 213 is slidably connected to the inside of the arc-shaped groove through the protruding column at its upper end.

[0050] When the water inlet pipe 241 starts to inject water into the water collecting tank 1, the telescopic section of the reciprocating telescopic hydraulic cylinder causes the hydraulic cylinder to first drive the ring frame 24 to move upward relative to the connecting cylinder 232. The ring frame 24 drives the water delivery pipe 21 to move synchronously through the water collecting tank 1. When the water delivery pipe 21 moves upward, it deflects in the direction close to the axis of the water collecting tank 1 under the action of its own gravity, so that the whole water delivery pipe 21 contracts inward.

[0051] At the same time, the water collecting tank 1 drives the linkage rod 233 on it to move upward to contact the middle part of the hypotenuse of the tooth groove of the upper tooth groove ring plate 231. Thus, through the guidance of the hypotenuse of the tooth groove of the upper tooth groove ring plate 231, the linkage rod 233 moves along the hypotenuse of the tooth groove of the upper tooth groove ring plate 231, and then the linkage rod 233 drives the water collecting tank 1 to rotate.

[0052] When the linkage rod 233 moves upward to the bottom position of the tooth groove of the upper tooth groove ring plate 231, the telescopic section of the extended hydraulic cylinder is extended. The water collecting tank 1 drives the water delivery pipe 21 to move downward, so that the linkage rod 233 contacts the middle part of the hypotenuse of the tooth groove of the lower tooth groove ring plate 231. Thus, the linkage rod 233 drives the water collecting tank 1 to continue rotating in the same direction along the hypotenuse of the tooth groove of the lower tooth groove ring plate 231. At the same time, the water delivery pipe 21 extends outward again and rotates synchronously with the water collecting tank 1.

[0053] Through the one-way rotation, up and down movement and inside and outside contraction and expansion of multiple groups of water delivery pipes 21, the water distribution direction and range are dynamically adjusted, so as to effectively eliminate the water distribution dead corners at the edge of the tank body and for high-viscosity wastewater, significantly improve the water distribution uniformity. At the same time, the rotating water delivery pipe 21 can agitate the wastewater and anaerobic sludge to a certain extent, and effectively improve the mixing effect of the wastewater and anaerobic sludge through mechanical agitation.

[0054] When the water delivery pipe 21 deflects, it drives the hinge block 211 thereon to rotate along the axis of the hinge joint with the upper hinge frame 212. At the same time, the hinge block 211 drives the convex column to slide inside the arc-shaped groove at the corresponding position through the limit support plate 213, thereby restricting the deflection angle of the water delivery pipe 21 through the arc-shaped groove and preventing the water delivery pipe 21 from deflecting randomly.

[0055] Refer to Figure 1 , Figure 5 and Figure 6 , the mixing mechanism 3 includes push plates 32 arranged at equal intervals along the circumferential direction of the water collecting tank 1 through a connecting component 31. A double spiral blade rod 33 is fixedly installed on the lower side of the water collecting tank 1. When the water collecting tank 1 rotates, the push plates 32 and the double spiral blade rod 33 cooperate to reciprocally push the sludge and wastewater inside the anaerobic tank.

[0056] Refer to Figure 1 and Figure 5 , the connecting component 31 includes a driven ring 311 rotatably arranged outside the connecting cylinder 232. A plurality of connecting plate members 312 are fixedly installed at equal intervals along the circumferential direction on the lower end of the outer side of the water collecting tank 1. One end of the connecting plate member 312 far from the axis of the water collecting tank 1 is rotatably connected to the push plate 32, and the connecting plate member 312 is slidably connected to the driven ring 311 up and down.

[0057] Refer to Figure 1 , Figure 5 and Figure 7 , the part of the push plate 32 in the same rotation direction as the water collecting tank 1 has an arc-shaped structure, and the part of the push plate 32 in the opposite rotation direction to the water collecting tank 1 has an inclined plate structure inclined towards the axis of the water collecting tank 1. A double ball head rod 313 is ball-joint connected between the upper side of the inclined plate structure of the push plate 32 and the driven ring 311.

[0058] When the water collecting tank 1 starts to rotate, the water collecting tank 1 drives the connecting plate member 312 to rotate synchronously, and the connecting plate member 312 drives the driven ring 311 to rotate synchronously, so that the driven ring 311 cooperates with the connecting plate member 312 through the double ball head rod 313 to jointly drive the push plate 32 to rotate. The push plate 32 shovels the anaerobic sludge and wastewater outside the anaerobic tank to the side of the push plate 32 close to the axis of the water collecting tank 1 through its arc-shaped structure.

[0059] Subsequently, the rotating push plate 32 pushes the anaerobic sludge and wastewater towards the axis of the water collecting tank 1 through its inclined plate structure. During the up and down movement of the water collecting tank 1, the water collecting tank 1 drives the push plate 32 to move up and down synchronously relative to the driven ring 311 through the connecting plate member 312, so that the driven ring 311 pulls and pushes the push plate 32 to swing reciprocally through the double ball head rod 313, thereby effectively increasing the pushing and mixing effect of the push plate 32 on the anaerobic sludge and wastewater.

[0060] Refer to Figure 1 ,Figure 5 and Figure 6 On one side of the push plate 32 close to the axis of the water collecting tank 1, two sets of centrally arranged plates 321 are symmetrically arranged up and down. The centrally arranged plates 321 are structured to gradually incline towards the middle of the push plate 32 along the direction of rotation of the water collecting tank 1. Taking the upper set of centrally arranged plates 321 as an example, during the rotation process, the highest point of the centrally arranged plate 321 first contacts the wastewater and sludge. When the upper and lower symmetric spiral blades of the double spiral leaf rod 33 rotate, the sludge and wastewater in the middle are pushed towards the upper and lower sides and the outside.

[0061] When the push plate 32 pushes the anaerobic sludge and wastewater, the push plate 32 pushes the anaerobic sludge and wastewater towards the middle of the push plate 32 through the centrally arranged plates 321 thereon. Thus, the push plate 32 can not only push the anaerobic sludge and wastewater on the outside towards the middle, but also push the anaerobic sludge and wastewater at the upper and lower positions of the anaerobic tank towards the middle through the centrally arranged plates 321.

[0062] When the water collecting tank 1 starts to rotate, the water collecting tank 1 drives the double spiral leaf rod 33 to rotate synchronously. The cross-section of the spiral blade on the double spiral leaf rod 33 is in the shape of a volute line structure, so that the rotating double spiral leaf rod 33 can push the anaerobic sludge and wastewater in the middle towards the outside, and through the upper and lower symmetric spiral blades of the double spiral leaf rod 33, the anaerobic sludge and wastewater in the middle can also be pushed towards the upper and lower sides. Cooperating with the pushing of the anaerobic sludge and wastewater by the push plate 32 and the centrally arranged plates 321, the anaerobic sludge and wastewater can be three-dimensionally pushed and mixed in multiple directions, effectively improving the mixing effect.

[0063] Continue to refer to Figure 1 、 Figure 5 and Figure 6 In the anaerobic tank, a fixed seat 331 is fixedly connected by bolts. Two sets of vertically arranged and staggered rotary cutting rake knives 332 are arranged at equal intervals in the vertical direction in the middle of the double spiral leaf rod 33. Each set consists of a number of rotary cutting rake knives 332 arranged at equal intervals in the vertical direction. The middle of the rotary cutting rake knife 332 is in a ring structure, and the outside is in the structure of a plurality of curved knives arranged at equal intervals. The bending directions of the curved knife structures of the two sets of rotary cutting rake knives 332 are opposite. One set is fixedly connected to the double spiral leaf rod 33, and the other set is slidably connected to the fixed seat 331 in the vertical direction and is rotatably connected to the double spiral leaf rod 33.

[0064] When the push plate 32 and the centrally arranged plates 321 push the anaerobic sludge and wastewater inward, the anaerobic sludge and wastewater move to the position of the rotary cutting rake knife 332. The double spiral leaf rod 33 drives a set of rotary cutting rake knives 332 fixedly connected thereto to rotate synchronously, and the other set of rotary cutting rake knives 332 slidably connected to the fixed seat 331 does not rotate, so that the two sets of rotary cutting rake knives 332 shear the anaerobic sludge and wastewater alternately, breaking the anaerobic sludge mass and improving the mixing effect of the anaerobic sludge and wastewater.

[0065] When the water collecting tank 1 starts to rotate, the water collecting tank 1 drives the filter screen 242 and the partition plate 243 to rotate simultaneously, so that the filter screen 242 can replace the filtering area in real time to filter the wastewater, thereby ensuring the filtering effect and preventing blockage. The partition plate 243 is used to concentrate the wastewater in a certain filtering area above the filter screen 242 to prevent the wastewater from flowing to other filtering areas, effectively ensuring the efficiency of partition filtering.

[0066] In addition, the present invention also provides a method for distributing water in an anaerobic tank. The specific steps of the water distribution method are as follows: S1. The operator fixedly installs the flange on the connecting cylinder 232 on the upper end of the anaerobic tank by means of bolt connection, so that the water delivery pipe 21 is located inside the anaerobic tank. The wastewater is introduced into the interior of the water collecting tank 1 through the water inlet pipe 241. The wastewater flows into the interior of the water delivery pipe 21 through the filtration of the filter screen 242. Then, the wastewater flows into the anaerobic tank through the water outlet on the water delivery pipe 21, and the wastewater is mixed with the anaerobic sludge. Through the reaction of the organic matter in the wastewater with the anaerobic sludge, the wastewater is treated.

[0067] S2. The telescopic section of the reciprocating telescopic hydraulic cylinder causes the water collecting tank 1 to rotate unidirectionally. The water collecting tank 1 drives the water delivery pipe 21 to rotate synchronously and unidirectionally. The rotating water delivery pipe 21 can agitate the wastewater and the anaerobic sludge to a certain extent, and effectively improve the mixing effect of the wastewater and the anaerobic sludge through mechanical agitation.

[0068] S3. The up and down movement of the water collecting tank 1 drives the water delivery pipe 21 to move up and down and expand and contract inside and outside, thereby dynamically adjusting the water distribution direction and the water distribution range, effectively eliminating the water distribution dead corners at the edge of the tank body and for high-viscosity wastewater, and significantly improving the water distribution uniformity.

[0069] S4. The water collecting tank 1 drives the push plate 32 to rotate, so that the push plate 32 pushes the anaerobic sludge and wastewater outside towards the middle, and the concentrated plate 321 pushes the anaerobic sludge and wastewater at the upper and lower positions of the anaerobic tank towards the middle. The water collecting tank 1 drives the double spiral leaf rod 33 to rotate synchronously, pushing the anaerobic sludge and wastewater in the middle towards the outside, and pushing the anaerobic sludge and wastewater in the middle towards the upper and lower sides, so as to be able to perform three-dimensional pushing and mixing of the anaerobic sludge and wastewater in multiple directions, effectively improving the mixing effect.

[0070] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention, and still be covered by the protection scope of the present invention.

Claims

1. An anaerobic tank built-in water distribution device, including a water collecting tank, characterized in that, An outlet mechanism for evenly distributing water into the anaerobic tank by means of one-way rotation is provided on the water collecting tank. The water distribution device further includes a mixing mechanism for three-dimensionally stirring and mixing anaerobic sludge and wastewater. The outlet mechanism includes several groups of water delivery pipes arranged at equal intervals along the circumferential direction of the water collecting tank on its lower side. Each group consists of multiple water delivery pipes. The water delivery pipes within the same group are connected end to end in sequence from top to bottom by means of hinge joints. The adjacent water delivery pipes within the same group and between the uppermost water delivery pipe and the water collecting tank are connected through hoses. A universal wheel is fixedly connected to the lower side of the lowermost water delivery pipe. A moving component for driving it to move up and down and rotate in one direction is arranged outside the water collecting tank. Except for the uppermost water delivery pipe, water outlet holes are evenly arranged on the other water delivery pipes at equal intervals. The mixing mechanism includes push plates arranged at equal intervals along the circumferential direction of the water collecting tank through a connecting component. A double spiral blade rod is fixedly installed on the lower side of the water collecting tank. When the water collecting tank rotates, the push plates and the double spiral blade rod cooperate to reciprocally push the sludge and wastewater inside the anaerobic tank.

2. The built-in water distribution device in the anaerobic tank according to claim 1, characterized in that, A hinge block is fixedly installed at the upper end of the water delivery pipe. Except for the lowermost water delivery pipe, hinge brackets with a U-shaped structure are fixedly installed at the lower ends of the other water delivery pipes and the lower side of the water collecting tank. The hinge block is hinged to the corresponding hinge bracket.

3. The built-in water distribution device in the anaerobic tank according to claim 2, characterized in that, A limiting support plate is fixedly installed on the side surface of the hinge block. An arc-shaped groove is formed on the vertical section of the hinge bracket corresponding to one side of the limiting support plate. The limiting support plate is slidably connected to the inside of the arc-shaped groove through a protruding column at its upper end.

4. The built-in water distribution device in the anaerobic tank according to claim 1, characterized in that, The moving component includes two vertically arranged toothed groove ring plates movably arranged outside the cylindrical surface of the water collecting tank. The toothed grooves of the two toothed groove ring plates face each other and are staggeredly arranged. A connecting cylinder is fixedly installed outside the two toothed groove ring plates together. Two symmetrically arranged linkage rods are fixedly installed outside the water collecting tank and are located between the two toothed groove ring plates.

5. The built-in water distribution device in an anaerobic tank according to claim 4, characterized in that, The connecting component includes a driven ring rotatably arranged outside the connecting cylinder. A number of connecting plate members are fixedly installed at equal intervals along the circumferential direction at the lower end outside the water collecting tank. One end of the connecting plate member away from the axis of the water collecting tank is rotatably connected to the push plate. The connecting plate member is slidably connected to the driven ring up and down.

6. The built-in water distribution device in the anaerobic tank according to claim 5, characterized in that, The part of the push plate in the same rotation direction as the water collecting tank has an arc-shaped structure. The part of the push plate in the opposite rotation direction to the water collecting tank has an inclined plate structure inclined towards the axis of the water collecting tank. A double ball head rod is ball-hinged between the upper side of the inclined plate structure of the push plate and the driven ring.

7. The built-in water distribution device in the anaerobic tank according to claim 1, characterized in that, Two groups of centrally concentrated plates arranged symmetrically up and down are fixed on one side of the push plate close to the axis of the water collecting tank. The centrally concentrated plates have a structure that gradually inclines towards the middle of the push plate along the rotation direction of the water collecting tank. When the upper and lower symmetric spiral blades of the double spiral blade rod rotate, the sludge and wastewater in the middle are pushed to the upper and lower sides and the outside.

8. The built-in water distribution device in the anaerobic tank according to claim 1, characterized in that, A fixed seat is fixedly connected inside the anaerobic tank by bolts. Two groups of upper and lower staggered rotary cutting rake knives are arranged at equal intervals along the vertical direction in the middle of the double spiral blade rod. One group is fixedly connected to the double spiral blade rod, and the other group is slidably connected to the fixed seat up and down and is rotatably connected to the double spiral blade rod.

9. The built-in water distribution device in the anaerobic tank according to claim 1, characterized in that, A ring frame is rotatably arranged at the upper part of the water collecting tank. An L-shaped water inlet pipe is fixedly installed inside the ring frame. The vertical section of the water inlet pipe is located at an eccentric position inside the water collecting tank. A filter screen is arranged inside the water collecting tank and below the water inlet pipe. A partition plate is fixedly installed above the filter screen.

10. A method for distributing water in an anaerobic tank, which applies the in-tank water distribution device of the anaerobic tank according to any one of claims 1 to 9 above, characterized in that, The steps of its water distribution method are as follows: S1. Connect the water collecting tank to the upper part of the anaerobic tank through the moving assembly, so that the water delivery pipe is located inside the anaerobic tank, and introduce the wastewater into the anaerobic tank through the water collecting tank and the water delivery pipe. S2. Drive the water collecting tank to move up and down and rotate unidirectionally through the moving assembly, so that while the water collecting tank drives the water delivery pipe to distribute water evenly, the anaerobic sludge and wastewater are stirred. S3. The water collecting tank drives the water delivery pipe to move up and down, so that the water delivery pipe is supported by the bottom of the anaerobic tank through the universal wheels, so that the water delivery pipe reciprocates along the radial direction of the anaerobic tank, increasing the water distribution uniformity. S4. The water collecting tank drives the push plate and the double spiral leaf rod to move synchronously, so that the water collecting tank drives the push plate to push the anaerobic sludge and wastewater to move up and down and left and right reciprocally inside the anaerobic tank for mixing.

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