A circulating shear enhanced sludge selection tank

Abstract

The application relates to a sludge screening technical field, in particular to a circulating shear type sludge reinforced screening tank, which comprises a filtering mechanism, 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 inside of the tank body a; an opening a is arranged at the top end of the tank body a; the plate a is slidably arranged in the opening a; an opening b is arranged at the bottom end of the tank body a; the plate b is slidably arranged in the opening b; the filter screen assembly comprises a shell, an equidistance change unit and filter screen rods; the equidistance change unit is arranged on the inside of the shell; the filter screen rods are provided in two groups; each group is provided with a plurality of filter screen rods and is parallel to each other; the two groups of filter screen rods are connected with the two groups of equidistance change units respectively; the two groups of filter screen rods are perpendicular to each other and contact to form a mesh structure; and a filtering opening is arranged on the shell. The sludge is equally divided into multiple parts, each part of the sludge is separately sheared and broken, so that the sufficiency of sludge shearing and breaking is ensured; meanwhile, the work load of the staff is reduced, and the sludge screening efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sludge screening, in particular to a circulating shear type sludge reinforced screening tank. BACKGROUND

[0002] The circulating shear type sludge reinforced screening tank is a high-efficiency device for sludge treatment, mainly used for sludge screening, separation and pretreatment.

[0003] The existing circulating shear type sludge reinforced screening tank, when working, forms a circular flow of sludge in the tank body through the internal circulation flow design, and the tank body is equipped with high-speed rotating shear blades to break and disperse the fixed particles in the sludge, and the tank body is provided with screens of different hole diameters to realize the function of grading the solid particles by size.

[0004] However, the existing circulating shear type sludge reinforced screening tank has the following defects: In order to filter particles of different sizes, multiple filters of different precision need to be arranged inside the tank body, and the filters are prone to clogging during use, especially the sludge with high content of fixed particles, fibers and hair is most likely to clog the filter, at which time the machine needs to be stopped for cleaning the filter, and the large number of filters results in a long cleaning time, which not only causes the maintenance personnel to work hard but also seriously affects the screening efficiency; in addition, the existing tank body can handle a large amount of sludge at a time, so that the blades cannot fully break the solid particles in the sludge. SUMMARY

[0005] The present application aims to solve the problems in the background art and provides a circulating shear type sludge reinforced screening tank.

[0006] The technical scheme of the present application is as follows: a circulating shear type sludge reinforced screening tank, comprising:

[0007] A filtering mechanism, comprising a tank body a, a filter 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 assembly is arranged inside the tank body a; an opening a is formed at the top end of the tank body a; the plate a is slidably arranged in the opening a; an opening b is formed at the bottom end of the tank body a; the plate b is slidably arranged in the opening b;

[0008] The filter assembly comprises a shell, an equidistant change unit and a filter rod; the shell is detachably connected with the tank body a; the equidistant change unit is arranged on the inner side of the shell and has two groups arranged vertically; the filter rod has two groups, each group has multiple filter rods arranged parallel to each other; the two groups of filter rods are connected with the two groups of equidistant change units respectively, and the two groups of filter rods are perpendicular to each other and in contact to form a mesh structure; a filtering port is formed on the shell;

[0009] The circulating mechanism comprises a tank body b, a plate c, a ring cutting assembly and a motor a; the tank body b is rotationally arranged on the outer circumferential surface of the tank body a; the plate c is arranged with a plurality of plates which are circumferentially distributed on the inner wall of the tank body b, the plate c is tightly attached to the outer circumferential surface of the tank body a, and the plate c equally divides the internal space of the tank body b into a plurality of crushing cavities; the ring cutting assembly is arranged inside the crushing cavity; and the motor a is in transmission connection with the tank body b.

[0010] Preferably, one end of the tank body a is provided with doors a and b, so as to facilitate opening of the tank body a.

[0011] Preferably, the equidistance changing unit comprises a motor b, a mounting seat, a screw rod, a guide rod, a nut block, an extension part and a sliding block a; the mounting seat is provided with two mounting seats which are symmetrically arranged, the screw rod is rotationally arranged on the mounting seat; the motor b is arranged on the mounting seat and its output end is connected with the screw rod; the guide rod is connected with the mounting seat; the sliding block a is provided with a plurality of sliding blocks which are in sliding connection with the guide rod; the nut block is in threaded connection with the screw rod and is in sliding connection with the guide rod; and the filter screen rod is rotationally connected with the sliding block a or the nut block.

[0012] Preferably, the extension part comprises a cross part and a V-shaped part; the cross part is provided with a plurality of cross parts which are in one-to-one correspondence with the sliding blocks a, the cross part comprises a rod a and a rod b, the rod a and the rod b are arranged to cross each other and are rotationally connected through a rotating shaft at the intersection, the rotating shaft is rotationally connected with the sliding block a; the rod a and the rod b are rotationally connected between adjacent cross parts; the V-shaped part is provided with two groups of V-shaped parts which are located at the outermost cross parts, the V-shaped part comprises two rods c, the two rods c are hingedly connected with each other and the hinge is rotationally connected with the nut block or the mounting seat; and the two rods c are rotationally connected with the rod a and the rod b respectively.

[0013] Preferably, the nut block is provided with a laser ranging sensor, which is used for accurately controlling the moving distance of the filter screen rod.

[0014] Preferably, one end of the filter screen rod is rotationally connected with a sliding block b, and the sliding block b is in sliding connection with the shell.

[0015] Preferably, the output end of the motor a is connected with a gear a; and the outer circumferential surface of the tank body b is connected with a gear ring a which is in meshing connection with the gear a.

[0016] Preferably, the outer circumferential surface of the tank body a is provided with a gear ring b; the ring cutting assembly comprises a main shaft, a blade and a gear b; the main shaft is rotationally connected with the tank body b; the gear b is connected with one end of the main shaft and is in meshing connection with the gear ring b; and the blade is provided with a plurality of blades which are connected with the main shaft.

[0017] Compared with the prior art, the above technical scheme of the present application has the following beneficial technical effects:

[0018] By arranging the ring cutting assembly, the tank body b and the plate c, the plate c equally divides the tank body b into a plurality of crushing cavities, and the sludge is equally divided into a plurality of parts, so that each part of the sludge is independently sheared and crushed, thereby ensuring the sufficiency of the sludge shearing and crushing.

[0019] By incorporating a filtration mechanism, the filtration precision can be adjusted. A single filter assembly can filter and screen solid particles of various sizes. It also features automatic unclogging and self-cleaning of surface sludge, eliminating the need for manual cleaning of the filter. This not only reduces the workload of staff but also significantly improves cleaning efficiency and reduces cleaning time due to the small number of filter assemblies in the screening tank of this patent, thereby increasing the sludge screening efficiency. Attached Figure Description

[0020] Figure 1 A three-dimensional representation of an embodiment of the present invention Figure One ;

[0021] Figure 2 A three-dimensional representation of an embodiment of the present invention Figure Two ;

[0022] Figure 3 This is a perspective view of plate a, plate b, and doors a and b in an open state according to an embodiment of the present invention.

[0023] Figure 4 This is a schematic diagram of the structure when tank a and tank b are separated in one embodiment of the present invention;

[0024] Figure 5 This is a schematic diagram of the external structure of the filter assembly in one embodiment of the present invention;

[0025] Figure 6 This is a schematic diagram of the internal structure of the filter assembly in one embodiment of the present invention;

[0026] Figure 7 for Figure 6 Enlarged structural diagram at point A in the middle;

[0027] Figure 8 This is a schematic diagram of the structure of the equidistant variation unit in one embodiment of the present invention.

[0028] Reference numerals: 1. Tank body b; 101. Gear ring a; 102. Plate c; 2. Tank body a; 201. Plate a; 202. Plate b; 203. Door a; 204. Door b; 205. Gear ring b; 3. Support part; 4. Motor a; 5. Gear a; 6. Housing; 601. Filter port; 7. Gear b; 8. Blade; 9. Filter rod; 10. Lead screw; 11. Mounting seat; 12. Guide rod; 13. Nut block; 14. Slider a; 15. Rod a; 16. Motor b; 17. Laser rangefinder sensor; 18. Main shaft; 19. Rod b; 20. Rod c. Detailed Implementation

[0029] Example 1, as Figures 1-6The application provides a circulating flow shearing type sludge reinforced screening tank.

[0030] The filtering mechanism comprises a tank body a2, a filter screen assembly, a supporting part 3, a plate a201 and a plate b202; the tank body a2 is arranged on the ground through the supporting part 3, one end of the tank body a2 is provided with a door a203 and a door b204, the tank body a2 is convenient to open, the sludge to be treated can be poured into the tank body a2 by opening the door b204, and the filter screen assembly can be maintained by opening the door a203; the filter screen assembly is arranged in the tank body a2; an opening a is formed in the top end of the tank body a2; the plate a201 is slidably arranged in the opening a; an opening b is formed in the bottom end of the tank body a2; and the plate b202 is slidably arranged in the opening b.

[0031] The filter screen assembly comprises a shell 6, an equidistant change unit and filter screen rods 9; the shell 6 is detachably connected with the tank body a2, so that the filter screen assembly can be disassembled, and the filter screen assembly is convenient to replace or overhaul; the equidistant change unit is arranged on the inner side of the shell 6, the equidistant change unit is provided with two groups and is arranged vertically; the filter screen rods 9 are provided with two groups, each group is provided with a plurality of filter screen rods 9 and is parallel to each other; the two groups of filter screen rods 9 are connected with the two groups of equidistant change units respectively, and the two groups of filter screen rods 9 are perpendicular to each other and contact to form a mesh structure; and a filtering port 601 is formed in the shell 6.

[0032] In the embodiment, the two groups of filter screen rods 9 are perpendicular to each other to form a mesh structure, and can filter and screen the solid particles in the sludge; the equidistant change unit can change the distance between adjacent filter screen rods 9 at equal intervals, realizes the change function of the precision of the filter screen assembly, and is convenient to filter the solid particles with different particle sizes; and the screening function of the solid particles with different particle sizes is realized.

[0033] It is worth noting that the area of the filtering port 601 in the shell 6 is smaller than the area of the mesh structure formed by the filter screen rods 9, so that when the filter screen rods 9 become the mesh structure with the maximum precision under the control of the equidistant change unit, the mesh area is still larger than the area of the filtering port 601.

[0034] It should be noted that the shell 6 is provided with a detachable cover plate, so that the shell 6 can be disassembled to overhaul the structure in the shell 6 (refer to Figure 6 ).

[0035] The circulating mechanism comprises a tank body b1, a plate c102, a ring cutting assembly and a motor a4; the tank body b1 is rotatably arranged on the outer circumferential surface of the tank body a2; the plate c102 is arranged in multiple pieces and circumferentially distributed on the inner wall of the tank body b1, and the plate c102 is tightly attached to the outer circumferential surface of the tank body a2 to avoid leakage of sludge between the plates c102 through the gap between the plate c102 and the outer circumferential surface of the tank body a2; the plate c102 equally divides the internal space of the tank body b1 into multiple crushing cavities; the ring cutting assembly is arranged inside the crushing cavities; the motor a4 is in driving connection with the tank body b1, and the motor a4 includes but is not limited to being mounted on the support part 3.

[0036] In this embodiment, the motor a4 intermittently drives the tank body b1 to rotate by an angle of 1 / N each time, where N is the number of the crushing cavities; the number of the crushing cavities is even and only half of the crushing cavities contain sludge to be treated; when the door b204 is opened, the motor a4 can be controlled to work so that the crushing cavities are rotated to the position of the opening b, at which time the worker can pour the sludge to be treated into the crushing cavities; after the sludge is poured into half of the crushing cavities, the door b204 is closed and the motor a4 is controlled to continuously rotate the gear a5, which in turn continuously rotates the tank body b1 through the gear ring a101, and under the action of the ring cutting assembly, the sludge floc structure is destroyed, the bound water is released, the separation of small structures is promoted, and the solid particles combined together are separated from each other; then the motor a4 is controlled to intermittently rotate, and the plate a201 and the plate b202 are opened, when the tank body b1 drives the sludge in the crushing cavities to rotate to the opening a, the tank body b1 stops rotating, and the sludge in the crushing cavities falls into the tank body a2 under the action of its own gravity, and then passes through the filter screen assembly to realize the filtering and screening function of the solid particles in the sludge, and the filtered sludge falls into the empty crushing cavities below, and then is transported to the opening a again under the rotating action of the tank body b1 and falls into the tank body a2 again to be filtered for the second time, and the above operation is repeated to realize the multiple filtering function of the sludge.

[0037] It should be noted that when the space above the filter screen assembly in the tank body a2 is funnel-shaped and the bottom opening area is smaller than the area of the filtering port 601, it is ensured that the sludge in the tank body a2 can pass through the filter screen assembly, and accumulation of sludge in the tank body a2 is avoided.

[0038] It is worth noting that a vibration motor is arranged in the filter screen assembly, and the vibration motor drives the filter screen assembly to vibrate, which can accelerate the speed of the sludge passing through the filter screen assembly and improve the filtering and screening efficiency of the sludge.

[0039] It should be noted that by closing plates a201 and b202, the filter assembly's precision is minimized (when the mesh size is at its maximum) using the equidistant changing unit. All solid particles filtered by the filter assembly will pass through the mesh and fall onto plate b202. The filtered solid particles can be recovered by removing plate b202. Then, plates a201 and b202 are reopened to restore the filter assembly's precision. This filtration process is repeated for a period of time. Then, plates a201 and b202 are closed again to minimize the filter assembly's precision. Plate b202 is then removed. If solid particles still remain on plate b202, the filtration process is repeated until no solid particles remain on plate b202 when it is removed, indicating that the filtration of solid particles of that size is complete. The filtration of solid particles of the next size can then proceed.

[0040] Example 2, as Figures 6-8 As shown, this invention proposes a circulating shear-type sludge enhanced screening tank. Compared to Embodiment 1, this embodiment further details the structure of the equidistant changing unit. The equidistant changing unit includes a motor b16, a mounting base 11, a lead screw 10, a guide rod 12, a nut block 13, an extension part, and a slider a14. Two mounting bases 11 are provided and symmetrically arranged. The lead screw 10 is rotatably mounted on the mounting base 11. The motor b16 is mounted on the mounting base 11, and its output end is connected to the lead screw 10. The guide rod 12 is connected to the mounting base 11. Multiple sliders a14 are provided and 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. The guide rod 12 can limit and guide the movement of the sliders a14 and the nut block 13. Filter rods 9 are rotatably connected to the sliders a14 or the nut block 13. When the two sets of filter rods 9 move, the filter rods 9 rotate under the action of friction between the two sets of filter rods 9, and the filter screen... The rods 9 rub against each other, which can help clean the sludge on the surface of the filter rods 9. The extension part includes a cross part and a V part. There are multiple cross parts, each corresponding to a slider a14. The cross part includes rods a15 and b19. The rods a15 and b19 are arranged to cross each other and are rotatably connected at the intersection point by a rotating shaft. The rotating shaft is rotatably connected to the slider a14. The rods a15 and b19 are rotatably connected between adjacent cross parts. There are two sets of V parts, located at the outermost cross part. The V part includes two rods c20. The two rods c20 are hinged to each other and the hinge point is rotatably connected to the nut block 13 or the mounting base 11 (the mounting base 11 with the motor b16 installed). The two rods c20 are rotatably connected to rods a15 and b19 respectively. The nut block 13 is equipped with a laser range sensor 17 for precise control of the movement distance of the filter rods 9. One end of the filter rod 9 is rotatably connected to a slider b, and the slider b is slidably connected to the housing 6.

[0041] In this embodiment, the motor b16 drives the lead screw 10 to rotate, causing the nut block 13 to move towards the motor b16. At this time, the included angle between the rod c20 rotatably connected to the nut block 13 increases. The rod c20 drives the rods a15 and b19 rotatably connected to it to rotate, increasing the included angle between them. This causes the sliders a14 to move closer together, realizing the function of equal distance movement of the sliders a14 at all points. This, in turn, realizes the function of equal distance movement of the filter rods 9 at all points, reducing the area of ​​the mesh structure formed by the filter rods 9 and the mesh size of the mesh structure, thus increasing the filtration accuracy of the mesh structure. Conversely, when the nut block 13 moves away from the motor b16, the area of ​​the mesh structure formed by the filter rods 9 increases, and the mesh size of the mesh structure increases, thus reducing the filtration accuracy of the mesh structure. By changing the accuracy of the mesh structure, it is convenient to filter and screen solid particles of different sizes in the sludge.

[0042] It should be noted that the laser rangefinder 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, which is the initial distance. At this time, the area of ​​the mesh structure formed by the filter rods 9 is the largest, and the mesh size of the mesh structure is the largest, resulting in the minimum filtration accuracy of the mesh structure. The laser rangefinder 17 determines whether the movement distance of the filter rods 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 filtration accuracy), thereby realizing the function of controlling the filtration accuracy of the filter assembly (i.e., controlling the filtration accuracy of the filter assembly). The filtration accuracy refers to the distance that the nut block 13 needs to move compared to the initial state.

[0043] Example 3, as Figures 2-3 As shown, the present invention proposes a circulating shear-type sludge enhanced screening tank. Compared with Embodiment 2, this embodiment further includes a gear a5 connected to the output end of a motor a4; a gear ring a101 that meshes with the gear a5 is connected to the outer circumferential surface of the tank body b1; a gear ring b205 is provided on the outer circumferential surface of the tank body a2; the ring cutting assembly includes a main shaft 18, blades 8 and gear b7; the main shaft 18 is rotatably 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; multiple blades 8 are provided and connected to the main shaft 18.

[0044] In the embodiment, the motor a4 drives the gear a5 to rotate, the gear a5 drives the tank b1 to rotate through the gear ring b205, the tank b1 drives the plate c102 to rotate, the plate c102 drives the sludge in the crushing cavity to rotate, so that the sludge in the crushing cavity circulates through the tank a2, and the circulation flow function of the sludge is realized; in the rotating process of the tank b1, the ring cutting assembly is driven to make 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, and the main shaft 18 drives the blade 8 to rotate, so that the sludge can be stirred and sheared, the sludge flocculation structure is destroyed, the combined water is released, the separation of small structures is promoted, and the solid particles combined together are separated from each other.

[0045] It should be noted that the motor a4 and the motor b16 in the device are controlled by an external controller, and the external controller is provided with a control panel.

[0046] As described above, when the present application is used, the door b204 is opened, and the "loading" instruction is input through the control panel, at this time, the external controller starts the motor a4, the motor a4 drives the gear a5 to rotate, the gear a5 drives the tank b1 to rotate through the gear ring a101, so that the crushing cavity rotates to the position of the opening b, at this time, the worker can pour the sludge to be treated into the crushing cavity; after half of the crushing cavity is poured with the sludge, the door b204 is closed, and the motor a4 is controlled to drive the gear a5 to continuously rotate, and then the tank b1 is continuously rotated through the gear ring a101, in the rotating process, the gear b7 rolls on the surface of the gear ring b205, so that the main shaft 18 drives the blade 8 to rotate rapidly to shear and crush the sludge, destroy the sludge flocculation structure, release the combined water, promote the separation of small structures, and separate the solid particles combined together from each other, since the screening tank in the present application divides the sludge into multiple parts, and each part of the sludge is sheared and crushed separately, so that the sufficiency of sludge shearing and crushing is ensured.

[0047] After that, the filtering precision (the distance that the nut block 13 needs to move compared to the initial state) is input 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 while driving the laser ranging sensor 17 to move (the laser ranging sensor 17 monitors whether the distance between the nut block 13 and the mounting seat 11 reaches the initial distance + the input filtering precision, to judge whether the moving distance of the filter screen rod 9 meets the standard, to realize the function of controlling the filtering precision of the filter screen assembly), at this time, the included angle between the rod c20 rotatingly connected with the nut block 13 increases, the rod c20 drives the rod a15 and the rod b19 rotatingly connected therewith to rotate, so that the included angle between the two increases, the sliders a14 move towards each other, the function of moving the sliders a14 at a distance is realized, and the function of moving the filter screen rods 9 at a distance is realized, so that the area of the mesh structure composed of the filter screen rods 9 decreases, and the mesh of the mesh structure decreases, so that the filtering precision of the mesh structure increases, to ensure that the filtering precision of the filter screen assembly can just filter the solid particles with the largest particle size (when the filter screen assembly starts, it is in the initial state, that is, the mesh is the largest).

[0048] Then open the plate a201 and plate b202, through the control panel input "filtering" instruction, the external controller controls the motor a4 to make its intermittent rotation, when the tank b1 drives the sludge in the crushing cavity to rotate to the opening a, the tank b1 stops rotating, the sludge in the crushing cavity will fall on the filter screen assembly inside the tank a2 under the action of its own gravity and pass through the mesh structure composed of filter screen rod 9, the filter screen assembly is provided with a vibration motor, which accelerates the sludge to pass through the filter screen assembly to avoid the sludge accumulation on the filter screen assembly, so that the solid particles with the largest particle size in the sludge can be filtered out; the sludge passing through the filter screen assembly will fall in the hollow crushing cavity of the tank b1, under the rotating action of the tank b1, it will be transported to the opening a on the tank a2 again (the main shaft 18 will drive the blade 8 to rotate to shear the sludge during the transportation process, to avoid the accumulation of solid particles again), and then fall into the tank a2 again for secondary filtering and screening, so that the solid particles with the largest volume in the sludge can be filtered and screened multiple times, to ensure the sufficiency of the filtering and screening; after the treatment time is over, close the plate a201 and plate b202, input the filtering precision "0" through the control panel (which means that the moving distance of the nut block 13 is 0 compared with the initial state), so that the nut block 13 returns to the initial state position, at this time, the filtering precision of the filter screen assembly is the smallest, and the solid particles with the largest particle size on the filter screen assembly fall on the plate b202 through the mesh, open the door b204 and take out the plate b202 at the same time, to clean and recycle the solid particles; then open the plate a201 and plate b202 again, adjust the filtering precision of the filter screen assembly to the previous state again, continue the filtering and screening operation for a period of time, and then recycle again through the above-mentioned method, if there is no solid particle on the plate b202, it means that the solid particles with the largest particle size in the sludge have been filtered and screened.

[0049] Then keep the plate a201 and plate b202 open and close the door b204, input the filtering precision of the next particle size solid particle through the control panel, repeat the above operation, to filter and screen the next particle size solid particle in the sludge, so as to realize the function of filtering and screening the solid particles in the sludge from large to small one by one.

[0050] After all the solid particles in the sludge are screened and recycled, the door b204 can be opened, the plate b202 is closed to place the recycling container on the plate b202, and the tank b1 is kept rotating, so that the sludge entering the tank a2 and passing through the filter screen assembly falls into the recycling container for recycling.

[0051] In the filtering process, if the blockage phenomenon occurs, the plate a 201 can be temporarily closed to block the falling sludge, and the plate b 202 is closed, and then the filtering accuracy of the filter screen assembly is adjusted to the minimum, so that the solid particles blocked on the filter screen pass through the mesh hole and fall on the plate b 202, realizing the self-cleaning and dredging function of the filter screen assembly, and improving the dredging efficiency; after the sludge is recovered, the filter screen assembly needs to be cleaned, the motor b 16 can be controlled to be intermittently forward and reverse rotated, so that the nut block 13 reciprocates along the screw rod 10, and then the filter screen rod 9 reciprocates, the two groups of filter screen rods 9 rub against each other, under the action of friction, 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 realizing the self-cleaning function of the filter screen assembly, without the need for workers to manually clean the filter screen, not only reducing the workload of workers, but also because the screening tank in the patent has only one layer of filter screen assembly, so the number is small, which significantly improves the cleaning efficiency, reduces the cleaning time, and improves the screening efficiency of the sludge.

[0052] The embodiments of the application are described in detail above in combination with the drawings, but the application is not limited thereto, and various changes can be made within the knowledge of those skilled in the art without departing from the purpose of the application.

Claims

1. A circulating shear enhanced sludge selection tank, characterized in that, The utility model relates to a filter mechanism, which comprises a tank body a (2), a filter screen assembly, a support part (3), a plate a (201) and a plate b (202); the tank body a (2) is arranged on the ground through the support part (3); the filter screen assembly is arranged inside the tank body a (2); an opening a is formed at the top end of the tank body a (2); the plate a (201) is slidably arranged in the opening a; an opening b is formed at the bottom end of the tank body a (2); the plate b (202) is slidably arranged in the opening b; The filter screen assembly comprises a shell (6), equidistance changing units and filter screen rods (9); the shell (6) is detachably connected with the tank body a (2); the equidistance changing units are arranged on the inner side of the shell (6) and are arranged in two groups and perpendicularly; the filter screen rods (9) are arranged in two groups, each group comprises a plurality of filter screen rods (9) and are parallel to each other; the two groups of filter screen rods (9) are connected with the two groups of equidistance changing units respectively, and the two groups of filter screen rods (9) are perpendicular to each other and contact to form a mesh structure; a filtering opening (601) is formed on the shell (6); the equidistance changing units comprise a motor b (16), mounting seats (11), lead screws (10), guide rods (12), nut blocks (13), extension parts and sliding blocks a (14); the mounting seats (11) are arranged in two groups and symmetrically; the lead screws (10) are rotatably arranged on the mounting seats (11); the motor b (16) is arranged on the mounting seat (11) and the output end thereof is connected with the lead screw (10); the guide rods (12) are connected with the mounting seats (11); the sliding blocks a (14) are arranged in a plurality of groups and are slidably connected with the guide rods (12); the nut blocks (13) are threadedly connected with the lead screws (10) and are slidably connected with the guide rods (12); the filter screen rods (9) are rotatably connected with the sliding blocks a (14) or the nut blocks (13); the nut blocks (13) are provided with laser ranging sensors (17) for accurately controlling the moving distance of the filter screen rods (9); when the two groups of filter screen rods (9) move, the filter screen rods (9) rotate under the friction between the two groups of filter screen rods (9), and the filter screen rods (9) rub against each other, which can clean the sludge on the surface of the filter screen rods (9); the laser ranging sensors (17) can measure the distance between the nut blocks (13) and the mounting seats (11); in the initial state, the distance between the nut blocks (13) and the mounting seats (11) is the smallest, which is the initial distance; at this time, the mesh structure formed by the filter screen rods (9) has the largest area and the largest mesh, so that the filtering precision of the mesh structure is the smallest; the laser ranging sensors (17) can judge whether the moving distance of the filter screen rods (9) meets the standard by monitoring whether the distance between the nut blocks (13) and the mounting seats (11) reaches the initial distance plus the input distance, so as to realize the function of controlling the filtering precision of the filter screen assembly. ​ The circulating mechanism comprises a tank body b (1), a plate c (102), a ring cutting assembly and a motor a (4); the tank body b (1) is rotationally arranged on the outer circumferential surface of the tank body a (2); the plate c (102) is arranged with a plurality of plates c (102) which are circumferentially distributed on the inner wall of the tank body b (1), the plate c (102) is tightly attached to the outer circumferential surface of the tank body a (2), and the plate c (102) equally divides the internal space of the tank body b (1) into a plurality of crushing cavities; the ring cutting assembly is arranged inside the crushing cavity; the motor a (4) is in transmission connection with the tank body b (1); when the tank body b (1) drives the sludge in the crushing cavity to rotate to the opening a, the tank body b (1) stops rotating, the sludge in the crushing cavity falls into the inside of the tank body a (2) under the action of its own gravity, then passes through the filter screen assembly to realize the filtering and screening function of the solid particles in the sludge, the filtered sludge falls into the empty crushing cavity below, then under the rotating action of the tank body b (1), is re-conveyed to the opening a and falls into the tank body a (2) again to be filtered for the second time, and the above operation is repeated to realize the multiple filtering function of the sludge.

2. The enhanced selector tank of claim 1, wherein the tank is a tank for enhancing the dewatering of sludge. One end of the tank body a (2) is provided with a door a (203) and a door b (204), so as to facilitate opening of the tank body a (2).

3. The enhanced selector tank of claim 1, wherein the tank is a tank for enhancing the dewatering of sludge. The extension part comprises a cross part and a V-shaped part; the cross part is provided with a plurality of cross parts corresponding to the sliding block a (14) one by one, the cross part comprises a rod a (15) and a rod b (19), the rod a (15) and the rod b (19) are arranged to cross each other and are rotationally connected at the intersection point through a rotating shaft, the rotating shaft is rotationally connected with the sliding block a (14); the rod a (15) and the rod b (19) are rotationally connected between adjacent cross parts; the V-shaped part is provided with two groups and is located at the outermost cross part, the V-shaped part comprises two rod c (20), the two rod c (20) are hingedly connected with each other and are rotationally connected with the nut block (13) or the mounting seat (11) at the hinged part; the two rod c (20) are rotationally connected with the rod a (15) and the rod b (19) respectively.

4. The enhanced selector tank of claim 1, wherein the tank is a tank for enhancing the dewatering of sludge. One end of the filter screen rod (9) is rotationally connected with a sliding block b, and the sliding block b is slidingly connected with the shell (6).

5. The enhanced selector tank of claim 1, wherein the tank is a tank for enhancing the dewatering of sludge. The output end of the motor a (4) is connected with a gear a (5); the outer circumferential surface of the tank body b (1) is connected with a gear ring a (101) engaged with the gear a (5).

6. The enhanced selector tank of claim 1, wherein the tank is a tank for enhancing the dewatering of sludge. The outer circumferential surface of the tank body a (2) is provided with a gear ring b (205); the ring cutting assembly comprises a main shaft (18), a blade (8) and a gear b (7); the main shaft (18) is rotationally connected with the tank body b (1); the gear b (7) is connected with one end of the main shaft (18) and is engaged with the gear ring b (205); the blade (8) is provided with a plurality of blades (8) connected with the main shaft (18).

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