Circulation shear type sludge reinforced screening tank

Abstract

The invention relates to the technical field of sludge screening, in particular to a circulation shearing type sludge reinforced screening tank which comprises a filtering mechanism, and the filtering mechanism comprises a tank body a, a filter screen assembly, a supporting part, a plate a and a plate b; the filter screen assembly is arranged in the tank body a; an opening a is formed in the top end of the tank body a; a plate a is slidably arranged in the opening a; an opening b is formed in the bottom end of the tank body a; a plate b is slidably arranged in the opening b; the filter screen assembly comprises a shell, an equidistant change unit and a filter screen rod; the equidistant changing unit is arranged on the inner side of the shell, the two groups of filter screen rods are arranged, and each group comprises a plurality of filter screen rods which are parallel to one another; the two groups of filter screen rods are respectively connected with the two groups of equidistant change units, are perpendicular to each other and are in contact with each other to form a net-shaped structure; and a filtering opening is formed in the shell. Sludge is equally divided into a plurality of parts, and each part of sludge is separately sheared and crushed, so that the shearing and crushing sufficiency of the sludge is ensured; and meanwhile, the workload of workers is reduced, and the sludge screening efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of sludge screening, and particularly relates to a circulating shear type sludge enhanced screening tank. Background Art

[0002] The circulating shear type sludge enhanced screening tank is an efficient device for sludge treatment, mainly used for sludge screening, separation and pretreatment.

[0003] When the existing circulating shear type sludge enhanced screening tank is working, through the internal circulating flow design, the sludge forms a circular flow in the tank body. The tank body is equipped with a high-speed rotating shear blade to break and disperse the fixed particles in the sludge. At the same time, different aperture sieves are arranged in the tank body to realize the function of classifying solid particles according to size.

[0004] However, the existing circulating shear type sludge enhanced screening tank has the following defects: In order to filter particles of different sizes, multiple filters with different precisions need to be set inside the tank body. During the use of the filter, it is easy to be blocked. Especially for the sludge with a high content of fixed particles, fibers and hairs, it is most likely to block the filter. At this time, only the machine can be stopped to clean the sieve. Since the number of sieves is large, the cleaning time is long, which not only leads to heavy work for maintenance personnel but also seriously affects the screening efficiency. In addition, the amount of sludge treated at one time in the existing tank body is large, so that the blade cannot fully break the solid particles in the sludge. Summary of the Invention

[0005] The purpose of the present invention is to propose a circulating shear type sludge enhanced screening tank for the problems existing in the background art.

[0006] The technical solution of the present invention: A circulating shear type sludge enhanced screening tank, comprising: A filtering mechanism, which includes a tank body a, a filter screen assembly, a support part, a plate a and a plate b; the tank body a is arranged on the ground through the support part; the filter screen assembly is arranged inside the tank body a; an opening a is opened at the top end of the tank body a; a plate a is slidably arranged in the opening a; an opening b is opened at the bottom end of the tank body a; a plate b is slidably arranged in the opening b; The filter screen assembly includes a shell, an equidistant change unit and filter screen rods; the shell is detachably connected to the tank body a; the equidistant change unit is arranged inside the shell, and there are two groups of equidistant change units arranged vertically; there are two groups of filter screen rods, each group has multiple filter screen rods and they are parallel to each other; the two groups of filter screen rods are respectively connected to the two groups of equidistant change units, and the two groups of filter screen rods are perpendicular to each other and contact to form a mesh structure; a filtering port is opened on the shell; The circulation mechanism comprises a tank body b, a plate c, a circular cutting assembly and a motor a; the tank body b is rotatably arranged on the outer peripheral surface of the tank body a; a plurality of plates c are provided and are circumferentially distributed on the inner wall of the tank body b, the plates c are tightly fitted to the outer peripheral surface of the tank body a, and the plates c divide the internal space of the tank body b into a plurality of crushing chambers; the circular cutting assembly is arranged on the inner side of the crushing chamber; and the motor a is drivingly connected to the tank body b.

[0007] Preferably, one end of the tank body a is provided with a door a and a door b to facilitate opening the tank body a.

[0008] Preferably, the equidistant variation unit comprises a motor b, a mounting seat, a screw, a guide rod, a nut block, an extension portion and a slider a; two mounting seats are provided and are symmetrically arranged, and the screw is rotatably arranged on the mounting seat; the motor b is provided on the mounting seat and its output end is connected to the screw; the guide rod is connected to the mounting seat; a plurality of sliders a are provided and are slidably connected to the guide rod; the nut block is threadedly connected to the screw and slidably connected to the guide rod; the filter rod is rotatably connected to the slider a or the nut block.

[0009] Preferably, the extending portion includes a cross portion and a V-shaped portion; a plurality of cross portions are provided and correspond one to one with the slider a, the cross portion includes a rod a and a rod b, the rod a and the rod b are cross-arranged and rotatably connected at the intersection by a rotating shaft, the rotating shaft is rotatably connected to the slider a; the rod a and the rod b are rotatably connected between adjacent cross portions; two groups of V-shaped portions are provided and are located at the outermost cross portions, the V-shaped portion includes two rods c, the two rods c are hinged to each other and the hinge is rotatably connected to the nut block or the mounting seat; the two rods c are rotatably connected to the rod a and the rod b, respectively.

[0010] Preferably, a laser distance measuring sensor is provided on the nut block for accurately controlling the moving distance of the filter rod.

[0011] Preferably, one end of the filter rod is rotatably connected to a slider b, and the slider b is slidably connected to the shell.

[0012] Preferably, the output end of the motor a is connected to a gear a; and the outer peripheral surface of the tank body b is connected to a gear ring a meshing with the gear a.

[0013] Preferably, a gear ring b is provided on the outer peripheral surface of the tank body a; the ring cutting assembly includes a main shaft, a blade and a gear b; the main shaft is rotationally connected to the tank body b; the gear b is connected to one end of the main shaft and meshes with the gear ring b; a plurality of blades are provided and connected to the main shaft.

[0014] Compared with the prior art, the above technical solution of the present invention has the following beneficial technical effects: By providing the ring cutting assembly, the tank body b and the plate c, the plate c divides the tank body b into a plurality of crushing chambers, and divides the sludge into a plurality of portions, and each portion of the sludge is sheared and crushed separately, thereby ensuring the adequacy of the sludge shearing and crushing.

[0015] By providing a filtering mechanism, the filtering precision can be changed. Through a single-layer filter screen assembly, the filtering and screening functions for solid particles of various particle sizes can be achieved. At the same time, the functions of automatic dredging and self-cleaning of the surface residual sludge can be realized, eliminating the need for manual cleaning of the filter screen by staff. This not only reduces the workload of the staff but also, since there is only one filter screen assembly in the screening tank of this patent, the small number significantly improves the cleaning efficiency, reduces the cleaning time, and enhances the screening efficiency of the sludge. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A three-dimensional view of an embodiment proposed by the present invention Figure 1 ; Figure 2 A three-dimensional view of an embodiment proposed by the present invention Figure 2 ; Figure 3 A three-dimensional view of plates a and b and doors a and b in an open state in an embodiment proposed by the present invention; Figure 4 A structural schematic diagram of the separation of tank a and tank b in an embodiment proposed by the present invention; Figure 5 An external structural schematic diagram of the filter screen assembly in an embodiment proposed by the present invention; Figure 6 An internal structural schematic diagram of the filter screen assembly in an embodiment proposed by the present invention; Figure 7 For Figure 6 The enlarged structural schematic diagram at position A in; Figure 8 A structural schematic diagram of the equidistant change unit in an embodiment proposed by the present invention.

[0017] Reference numerals: 1, tank b; 101, ring gear a; 102, plate c; 2, tank a; 201, plate a; 202, plate b; 203, door a; 204, door b; 205, ring gear b; 3, support part; 4, motor a; 5, gear a; 6, housing; 601, filtering port; 7, gear b; 8, blade; 9, filter screen rod; 10, lead screw; 11, mounting seat; 12, guide rod; 13, nut block; 14, slider a; 15, rod a; 16, motor b; 17, laser distance sensor; 18, main shaft; 19, rod b; 20, rod c. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] Embodiment 1, as Figures 1 - 6 shown, a circulation shear type sludge enhanced screening tank proposed by the present invention includes a filtering mechanism, a filter screen assembly, and a circulation mechanism; The filtering mechanism comprises a tank body a2, a filter assembly, a support part 3, a plate a201 and a plate b202; the tank body a2 is arranged on the ground through the support part 3, and one end of the tank body a2 is provided with a door a203 and a door b204, so as to facilitate opening the tank body a2. By opening the door b204, the sludge to be treated can be poured into the tank body a2, and the filter assembly can be maintained by opening the door a203; the filter assembly is arranged inside the tank body a2; an opening a is provided at the top of the tank body a2; a plate a201 is slidably provided in the opening a; an opening b is provided at the bottom of the tank body a2; a plate b202 is slidably provided in the opening b; The filter assembly includes a shell 6, an equidistant variable unit and a filter rod 9; the shell 6 is detachably connected to the tank a2, so that the filter assembly can be disassembled, which is convenient for replacing or repairing the filter assembly; the equidistant variable unit is arranged inside the shell 6, and two groups of equidistant variable units are arranged vertically; there are two groups of filter rods 9, each group is provided with a plurality of filter rods 9 and are parallel to each other; the two groups of filter rods 9 are respectively connected to the two groups of equidistant variable units, and the two groups of filter rods 9 are perpendicular to each other and contact to form a mesh structure; a filter port 601 is opened on the shell 6; In this embodiment, two groups of filter rods 9 are perpendicular to each other to form a mesh structure, which can filter and screen solid particles in the sludge; the equidistant change unit can equidistantly change the spacing between adjacent filter rods 9, realize the function of changing the accuracy of the filter assembly, and facilitate the filtering of solid particles of different particle sizes; and realize the screening function of solid particles of different particle sizes.

[0019] It is worth noting that the area of ​​the filter port 601 on the shell 6 is smaller than the area of ​​the mesh structure composed of the filter rods 9, ensuring that when the filter rods 9 become the mesh structure with the highest accuracy under the control of the equidistant change unit, the mesh area is still larger than the area of ​​the filter port 601.

[0020] It should be noted that a detachable cover is provided on the housing 6, so that the housing 6 can be disassembled for inspection and repair of its internal structure (see Figure 6 ).

[0021] The circulation mechanism includes a tank body b1, a plate c102, a circular cutting assembly and a motor a4; the tank body b1 is rotatably arranged on the outer peripheral surface of the tank body a2; the plate c102 is provided with multiple pieces and is circumferentially distributed on the inner wall of the tank body b1, and the plate c102 is tightly fitted with the outer peripheral surface of the tank body a2 to prevent the sludge between the plates c102 from leaking through the gap between the plate c102 and the outer peripheral surface of the tank body a2; the plate c102 divides the internal space of the tank body b1 into multiple crushing chambers; the circular cutting assembly is arranged on the inner side of the crushing chamber; the motor a4 is transmission-connected to the tank body b1, and the motor a4 includes but is not limited to being installed on the support part 3.

[0022] In this embodiment, the motor a4 drives the tank body b1 to rotate intermittently, each time rotating by an angle of 1 / N, where N is the number of crushing chambers; the number of crushing chambers is even and only half of the crushing chambers contain the sludge to be treated; when the door b204 is opened, the motor a4 can be controlled to work so that the crushing chamber rotates to the position of the opening b. At this time, the staff can pour the sludge to be treated into the crushing chamber; after sludge is poured into half of the crushing chambers, the door b204 is closed and the motor a4 is controlled to drive the gear a5 to rotate continuously, and then drive the tank body b1 to rotate continuously through the tooth ring a101. Under the action of the circumcision component, the sludge floc structure is destroyed, the bound water is released, the separation of fine structures is promoted, and the solid particles bound together are separated from each other; then the motor a4 is controlled to rotate intermittently, and at the same time the plate a201 and the plate b202 are opened. When the tank body b1 drives the sludge in the crushing chamber to rotate to the opening a, the rotation of the tank body b1 stops, and the sludge in the crushing chamber will fall into the tank body a2 under the action of its own gravity, and then pass through the filter screen component to realize the filtering and screening function of the solid particles in the sludge. The filtered sludge falls into the empty crushing chamber below, and then under the rotation of the tank body b1, it is transported back to the opening a again and falls into the tank body a2 again for secondary filtration. Repeating the above operations realizes the multiple filtration function of the sludge.

[0023] It should be noted that when the space above the filter screen component in the tank body a2 is funnel-shaped and the area of its bottom opening is smaller than the area of the filter opening 601, it is ensured that all the sludge in the tank body a2 can pass through the filter screen component, avoiding the accumulation of sludge in the tank body a2.

[0024] It is worth noting that a vibration motor is provided in the filter screen component, and the vibration motor drives the filter screen component to vibrate, which can accelerate the speed of the sludge passing through the filter screen component and improve the sludge filtration and screening efficiency.

[0025] It should be noted that by closing the plate a201 and the plate b202, the accuracy of the filter screen component is minimized (when the mesh aperture is the largest) by using the equidistant change unit. The solid particles filtered on the filter screen component will all pass through the mesh holes and fall on the plate b202. By pulling out the plate b202, the screened solid particles can be recycled. Then the plate a201 and the plate b202 are opened again to restore the accuracy of the filter screen component. After repeating the above filtration operation for a period of time, the plate a201 and the plate b202 are closed again to minimize the accuracy of the filter screen component, and then the plate b202 is pulled out. If there are still solid particles on the plate b202, continue to repeat the above filtration operation until there are no solid particles on the plate b202 when it is pulled out, indicating that the filtration of the solid particles of this particle size is completed; thus, the filtration operation of the next particle size of solid particles can be carried out.

[0026] Embodiment 2, as Figures 6 - 8As shown in the figure, a circulation shear type sludge enhanced screening tank proposed by the present invention, compared with the first embodiment, this embodiment also details the structure of the equidistant change unit. The equidistant change unit includes motor b16, mounting seat 11, lead screw 10, guide rod 12, nut block 13, extension part and slider a14; there are two mounting seats 11 and they are symmetrically arranged, and the lead screw 10 is rotatably arranged on the mounting seat 11; the motor b16 is arranged on the mounting seat 11 and its output end is connected to the lead screw 10; the guide rod 12 is connected to the mounting seat 11; there are multiple slider a14 and they are slidably connected to the guide rod 12; the nut block 13 is threadedly connected to the lead screw 10 and at the same time is slidably connected to the guide rod 12, and the guide rod 12 can play a role in limiting and guiding the movement of the slider a14 and the nut block 13; the filter screen rod 9 is rotatably connected to the slider a14 or the nut block 13. When the two groups of filter screen rods 9 move, the filter screen rods 9 rotate under the frictional force between the two groups of filter screen rods 9, and at the same time, the filter screen rods 9 rub against each other, which can play a certain role in cleaning the sludge on the surface of the filter screen rods 9; the extension part includes a cross part and a V-shaped part; there are multiple cross parts and they correspond to the slider a14 one by one. The cross part includes rod a15 and rod b19. The rod a15 and the rod b19 are crossly arranged and are rotatably connected at the intersection point through a rotating shaft. The rotating shaft is rotatably connected to the slider a14; the rod a15 and the rod b19 between adjacent cross parts are rotatably connected; there are two V-shaped parts and they are located at the outermost cross parts. The V-shaped part includes two rod c20. The two rod c20 are hinged to each other and the hinge point is rotatably connected to the nut block 13 or the mounting seat 11 (the mounting seat 11 with the motor b16 installed); the two rod c20 are respectively rotatably connected to the rod a15 and the rod b19; a laser distance sensor 17 is arranged on the nut block 13, which is used to accurately control the moving distance of the filter screen rod 9; one end of the filter screen rod 9 is rotatably connected to a slider b, and the slider b is slidably connected to the housing 6.

[0027] In this embodiment, the motor b16 is used to drive the lead screw 10 to rotate, so that the nut block 13 moves in the direction of the motor b16. At this time, the included angle between the rod c20 rotatably connected to the nut block 13 increases, and the rod c20 drives the rod a15 and the rod b19 rotatably connected to it to rotate, so that the included angle between the two increases, causing the slider a14 to approach each other, realizing the function of equidistant movement of each slider a14, and further realizing the function of equidistant movement of each filter screen rod 9, reducing the area of the mesh structure composed of the filter screen rods 9, and at the same time reducing the mesh holes of the mesh structure, increasing the filtering accuracy of the mesh structure; conversely, when the nut block 13 moves in the direction away from the motor b16, the area of the mesh structure composed of the filter screen rods 9 increases, and at the same time the mesh holes of the mesh structure increase, reducing the filtering accuracy of the mesh structure; by changing the accuracy of the mesh structure, it is convenient to filter and screen solid particles with different particle sizes in the sludge.

[0028] It should be noted that the laser distance sensor 17 can measure the distance between the nut block 13 and the mounting base 11 (the mounting base 11 without the motor b16 installed). In the initial state, the distance between the nut block 13 and the mounting base 11 is the smallest, and this distance is the initial distance. At this time, the area of the mesh structure formed by the filter rod 9 is the largest, and at the same time, the mesh holes of the mesh structure are the largest, so that the filtering accuracy of the mesh structure is the smallest. The laser distance sensor 17 determines whether the moving distance of the filter rod 9 meets the standard by monitoring whether the distance between the nut block 13 and the mounting base 11 reaches the initial distance + the input distance (i.e., the input filtering accuracy), so as to realize the function of controlling the filtering accuracy of the filter screen assembly (i.e., controlling the filtering accuracy of the filter screen assembly). The filtering accuracy refers to the distance that the nut block 13 needs to move compared to the initial state.

[0029] Embodiment 3, as Figures 2 - 3 shown, a circulation shear type sludge enhanced screening tank proposed by the present invention. Compared with Embodiment 2, this embodiment further includes that the output end of the motor a4 is connected with a gear a5; a gear ring a101 meshing with the gear a5 is connected to the outer peripheral surface of the tank body b1; a gear ring b205 is provided on the outer peripheral surface of the tank body a2; the circumcision assembly includes a main shaft 18, a blade 8 and a gear b7; the main shaft 18 is rotationally connected to the tank body b1; the gear b7 is connected to one end of the main shaft 18 and meshes with the gear ring b205; a plurality of blades 8 are provided and connected to the main shaft 18.

[0030] In this embodiment, the motor a4 drives the gear a5 to rotate. The gear a5 drives the tank body b1 to rotate through the gear ring b205. The tank body b1 drives the plate c102 to rotate. The plate c102 drives the sludge in the crushing chamber to rotate, so that the sludge in the crushing chamber circulates through the tank body a2, realizing the function of the circulating flow of the sludge; during the rotation of the tank body b1, it will drive the circumcision assembly to do a circular motion, so that the gear b7 rolls along the gear ring b205, and then the gear b7 drives the main shaft 18 to rotate. The main shaft 18 drives the blade 8 to rotate, which can play a role in stirring and shearing the sludge, destroying the sludge floc structure, releasing the bound water, promoting the separation of fine structures, and separating the solid particles combined together.

[0031] It should be noted that the motors a4 and b16 in this device are both controlled by an external controller, and a control panel is provided on the external controller.

[0032] In summary, when the present invention is in use, open the door b204, input the "loading" instruction through the control panel. At this time, the external controller turns on the motor a4, and the motor a4 drives the gear a5 to rotate. The gear a5 drives the tank body b1 to rotate through the toothed ring a101, so that the crushing chamber rotates to the position of the opening b. At this time, the staff can pour the sludge to be processed into the crushing chamber. After half of the crushing chamber is filled with sludge, close the door b204 and control the motor a4 at the same time to drive the gear a5 to continue rotating, and then drive the tank body b1 to continue rotating through the toothed ring a101. During the rotation process, the gear b7 rolls on the surface of the toothed ring b205, so that the main shaft 18 drives the blade 8 to rotate rapidly to shear and crush the sludge, destroy the sludge floc structure, release the bound water, promote the separation of fine structures, and separate the solid particles combined together. Since the screening tank in this patent divides the sludge into multiple equal parts and each part of the sludge is sheared and crushed separately, the sufficiency of the sludge shearing and crushing is ensured.

[0033] Then input the filtration accuracy (the distance that the nut block 13 needs to move compared to the initial state) through the control panel. The external controller controls the motor b16 to drive the lead screw 10 to rotate, so that the nut block 13 moves towards the direction of the motor b16 and drives the laser distance sensor 17 to move at the same time (the laser distance sensor 17 determines whether the movement distance of the filter screen rod 9 meets the standard by monitoring whether the distance between the nut block 13 and the mounting seat 11 reaches the initial distance + the input filtration accuracy, realizing the function of controlling the filtration accuracy of the filter screen assembly). At this time, the included angle between the rod c20 rotatably connected to the nut block 13 increases, and the rod c20 drives the rod a15 and the rod b19 rotatably connected to it to rotate, so that the included angle between the two increases, causing the slider a14 to move closer to each other, realizing the function of equidistant movement of each slider a14, and further realizing the function of equidistant movement of each filter screen rod 9, reducing the area of the mesh structure composed of the filter screen rods 9, and at the same time reducing the mesh holes of the mesh structure, increasing the filtration accuracy of the mesh structure, and ensuring that the filtration accuracy of the filter screen assembly can just filter the solid particles with the largest particle size (the filter screen assembly is in the initial state, that is, when the mesh holes are the largest at the beginning).

[0034] Then, open plate a201 and plate b202. Input the "filter screening" instruction through the control panel. The external controller controls motor a4 to rotate intermittently. When tank b1 drives the sludge in the crushing chamber to rotate to opening a, tank b1 stops rotating. The sludge in the crushing chamber will fall onto the filter screen assembly inside tank a2 under the action of its own gravity and pass through the mesh structure composed of filter rods 9. There is a vibration motor on the filter screen assembly to accelerate the sludge passing through the filter screen assembly and prevent the sludge from accumulating on the filter screen assembly, so that the largest particle size solid particles in the sludge can be filtered out; the sludge passing through the filter screen assembly will pass through opening b and fall into the hollow crushing chamber of tank b1. Under the rotation of tank b1, it will be conveyed to opening a on tank a2 again (during the conveying process, the main shaft 18 will drive the blade 8 to rotate to shear the sludge to prevent the solid particles from accumulating and combining again), and then fall into tank a2 again for secondary filtering and screening. Repeating this process multiple times can achieve the function of multiple filtering and screening of the largest volume solid particles in the sludge and ensure the sufficiency of filtering and screening; after the processing time ends, close plate a201 and plate b202. Input the filtration accuracy "0" through the control panel (indicating that the moving distance of nut block 13 compared to the initial state is 0), so that nut block 13 returns to its initial position. At this time, the filtration accuracy of the filter screen assembly is the smallest, and the largest particle size solid particles on the filter screen assembly pass through the mesh holes and fall on plate b202. Open door b204 and pull out plate b202 at the same time to clean and recycle the solid particles; then open plate a201 and plate b202 again, adjust the filtration accuracy of the filter screen assembly to the previous state again, continue the filtration and screening operation for a period of time, and then use the above recycling method again. If there are no solid particles on plate b202, it means that the filtration and screening of the largest particle size solid particles in the sludge has ended.

[0035] Then, keep plate a201 and plate b202 open and close door b204 at the same time. Input the filtration accuracy suitable for the next particle size solid particles through the control panel and repeat the above operations to filter and screen the next particle size solid particles in the sludge, so as to achieve the function of filtering and screening the solid particles in the sludge one by one from large to small.

[0036] After all the solid particles in the sludge are screened and recycled, door b204 can be opened, plate b202 can be closed, and the recycling container can be placed on plate b202. Keep tank b1 rotating so that the sludge entering tank a2 and passing through the filter screen assembly falls into the recycling container for recycling.

[0037] During the filtration process, if a clogging phenomenon occurs, the falling sludge can be temporarily blocked by closing plate a201 first, and at the same time, closing plate b202. Then, the filtration accuracy of the filter screen assembly is adjusted to the minimum, so that the solid particles blocked on the filter screen can pass through the mesh holes and fall on plate b202, realizing the self-cleaning and dredging function of the filter screen assembly and improving the dredging efficiency. After the sludge is recovered and the filter screen assembly needs to be cleaned, the motor b16 can be controlled to rotate forward and backward intermittently, so that the nut block 13 reciprocates along the lead screw 10, and then the filter screen rod 9 reciprocates, causing the two groups of filter screen rods 9 to rub against each other. Under the action of the frictional force, the two groups of filter screen rods 9 rotate, realizing the comprehensive cleaning function of the sludge on the surface of the filter screen rod 9, and then realizing the self-cleaning function of the filter screen assembly. There is no need for staff to manually clean the filter screen, which not only reduces the workload of the staff, but also, since there is only one layer of filter screen assembly in the screening tank in this patent, the small quantity significantly improves the cleaning efficiency, reduces the cleaning time, and improves the screening efficiency of the sludge.

[0038] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made without departing from the spirit of the present invention within the knowledge scope of those skilled in the art to which the present invention pertains.

Claims

1. A circulating shear type sludge enhanced screening tank, characterized in that, Comprising: A filtering mechanism, which includes a tank a (2), a filter screen assembly, a support part (3), a plate a (201) and a plate b (202); the tank a (2) is arranged on the ground through the support part (3); the filter screen assembly is arranged inside the tank a (2); an opening a is provided at the top end of the tank a (2); a plate a (201) is slidably arranged in the opening a; an opening b is provided at the bottom end of the tank a (2); a plate b (202) is slidably arranged in the opening b; The filter screen assembly includes a housing (6), an equidistant change unit and a filter screen rod (9); the housing (6) is detachably connected to the tank a (2); the equidistant change unit is arranged inside the housing (6), and there are two groups of equidistant change units arranged vertically; there are two groups of filter screen rods (9), and each group has multiple filter screen rods (9) arranged parallel to each other; the two groups of filter screen rods (9) are respectively connected to the two groups of equidistant change units, and the two groups of filter screen rods (9) are perpendicular to each other and contact to form a net structure; a filter port (601) is provided on the housing (6); A circulation mechanism, which includes a tank b (1), a plate c (102), a circumcision assembly and a motor a (4); the tank b (1) is rotatably arranged on the outer peripheral surface of the tank a (2); there are multiple plates c (102) arranged circumferentially on the inner wall of the tank b (1), the plate c (102) is in close fit with the outer peripheral surface of the tank a (2), and the plate c (102) divides the inner space of the tank b (1) into multiple crushing chambers; the circumcision assembly is arranged inside the crushing chamber; the motor a (4) is drivingly connected to the tank b (1).

2. The enhanced screening tank for sludge by circulating shear according to claim 1, wherein One end of the tank a (2) is provided with a door a (203) and a door b (204), which is convenient for opening the tank a (2).

3. The enhanced screening tank for sludge by circulation shearing according to claim 1, characterized in that, The equidistant change unit includes a motor b (16), a mounting seat (11), a lead screw (10), a guide rod (12), a nut block (13), an extension part and a slider a (14); there are two mounting seats (11) arranged symmetrically, the lead screw (10) is rotatably arranged on the mounting seat (11); the motor b (16) is arranged on the mounting seat (11) and its output end is connected to the lead screw (10); the guide rod (12) is connected to the mounting seat (11); there are multiple sliders a (14) slidably connected to the guide rod (12); the nut block (13) is threadedly connected to the lead screw (10) and slidably connected to the guide rod (12) at the same time; the filter screen rod (9) is rotatably connected to the slider a (14) or the nut block (13).

4. The enhanced screening tank for sludge with circulating shear according to claim 3, characterized in that The extension part includes a cross part and a V-shaped part; there are multiple cross parts corresponding to the sliders a (14) one by one, the cross part includes a rod a (15) and a rod b (19), the rod a (15) and the rod b (19) are arranged crosswise and are rotatably connected at the cross point through a rotating shaft, and the rotating shaft is rotatably connected to the slider a (14); the rod a (15) and the rod b (19) between adjacent cross parts are rotatably connected; there are two groups of V-shaped parts located at the outermost cross parts, the V-shaped part includes two rod c (20), the two rod c (20) are hinged to each other and the hinged part is rotatably connected to the nut block (13) or the mounting seat (11); the two rod c (20) are respectively rotatably connected to the rod a (15) and the rod b (19).

5. A circulation shear type sludge enhanced screening tank according to claim 3, characterized in that A laser distance sensor (17) is provided on the nut block (13) for precisely controlling the moving distance of the filter screen rod (9).

6. The enhanced screening tank for sludge with circulation shearing according to claim 1, characterized in that, One end of the filter screen rod (9) is rotatably connected with a slider b, and the slider b is slidably connected with the housing (6).

7. A circulation shear type sludge enhanced screening tank according to claim 1, characterized in that, The output end of the motor a (4) is connected with a gear a (5); a tooth ring a (101) meshing with the gear a (5) is connected to the outer peripheral surface of the tank b (1).

8. A circulation shear type sludge enhanced screening tank according to claim 1, characterized in that, A tooth ring b (205) is provided on the outer peripheral surface of the tank a (2); the cutting ring assembly includes a main shaft (18), a blade (8) and a gear b (7); the main shaft (18) is rotatably connected with the tank b (1); the gear b (7) is connected to one end of the main shaft (18) and meshes with the tooth ring b (205); a plurality of blades (8) are provided and connected with the main shaft (18).

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