A mechanical cold-pressed sludge deep dehydration and drying device and drying process

Abstract

The present invention relates to the technical field of sludge treatment, specifically to a mechanical cold-pressed sludge deep dehydration and drying device and a drying process, comprising a support frame and a gantry arranged above the support frame, a plurality of dehydration bins are evenly distributed in the circumferential direction of the outer circumference of the support frame, a conveying mechanism for driving the dehydration bins to circumferentially circulate is installed on the support frame, a filter basket is installed inside the dehydration bins at the top, and a pre-dehydration mechanism and a cold-pressed dehydration mechanism located above the support frame are installed on the gantry. The present invention performs multiple extrusion dehydration with gradually increasing pressure on the sludge by setting a cold-pressed dehydration mechanism, and directly acts on the sludge particles by high pressure, so that most of the interstitial water in the wet sludge can be separated from the sludge, and at the same time, high-pressure pressing can destroy the capillary surface tension and cohesion to separate the capillary water, and no chemical agent needs to be added during operation.

Description

Technical Field

[0001] The invention relates to the technical field of sludge treatment, and in particular to a mechanical cold-pressed sludge deep dehydration and drying device and a drying process. Background Art

[0002] The main treatment processes for municipal sludge are currently sanitary landfill, composting, anaerobic fermentation, and drying and incineration. Sanitary landfill requires a large amount of land, is difficult to control odor, and is prone to secondary pollution; the use of composting is limited, the treatment cycle is long, and the odor emissions during the treatment process are large; anaerobic fermentation will produce a large amount of sludge, which requires secondary treatment; the drying and incineration process is the most thorough treatment method, with a short treatment cycle, and outstanding performance in harmlessness, reduction, and resource utilization, but the treatment cost is high.

[0003] The first step of the municipal drying and incineration process is to dry the sludge, reducing the moisture content to about 40% so that it can self-sustain combustion. The current traditional process is mechanical dehydration + thermal drying process: the moisture content is reduced as much as possible through mechanical dehydration, and the traditional process can reduce it to 60% at most. Then it enters the thermal drying equipment and uses the heat generated by the sludge incineration (auxiliary fuel needs to be added if the heat is insufficient) for thermal drying, reducing the moisture content to about 40% before entering the incinerator for combustion.

[0004] However, there is a lot of bound water between the macromolecular structure and flocs in the sludge. The traditional mechanical dehydration process can only reduce the sludge moisture content to 60% when a large amount of reagents are added. Its basic calorific value cannot sustain combustion. Therefore, a thermal drying process is required to further reduce the sludge moisture, which increases the complexity and operating costs of the system. In addition, the calorific value contained in the sludge is used for sludge thermal drying, and the sludge heat cannot be utilized as a resource. For sludge with low calorific value, it cannot even meet the thermal drying requirements of the sludge, and auxiliary fuel needs to be added, further increasing operating costs. Summary of the invention

[0005] Based on this, the present invention provides a mechanical cold-pressed sludge deep dehydration and drying device and a drying process to solve the problems of high operating cost, great safety risk, and serious secondary pollution in the prior art of sludge dehydration and drying.

[0006] The mechanical cold-pressed sludge deep dehydration and drying device comprises a supporting frame and a gantry arranged above the supporting frame, a plurality of dehydration bins are evenly distributed circumferentially on the outside of the supporting frame, a conveying mechanism for driving the dehydration bins to move circumferentially is installed on the supporting frame, a filter basket is installed inside the dehydration bins at the top, and a pre-dehydration mechanism and a cold-pressed dehydration mechanism located above the supporting frame are installed on the gantry.

[0007] The pre-dehydration mechanism includes an outer shell body fixedly installed at the bottom of the horizontal section of the gantry, two partitions are symmetrically installed in the front and back of the outer shell body, an adjusting component is installed between the two partitions, an inner shell body is fixedly connected to the outer shell body on the side of the partition body away from the adjusting component, two left and right arranged spiral conveying rollers are rotatably installed in the inner part of the outer shell body, the spiral conveying rollers pass through the adjusting component and the front and rear inner shell bodies, a feed port is fixedly connected to the top of the rear inner shell body, the feed port is communicated with the interior of the rear inner shell body, a corrugated discharge pipe is fixedly connected to the bottom of the front inner shell body, the corrugated discharge pipe is communicated with the interior of the front inner shell body, a driving motor 2 for driving the spiral conveying roller to rotate is fixedly installed on the rear side of the outer shell body, and a swinging component for driving the corrugated discharge pipe to swing left and right is installed on the front side.

[0008] The cold press dehydration mechanism includes a steering motor fixedly installed on the top of the horizontal section of the gantry, the output shaft of the steering motor rotates and passes through the bottom of the horizontal section of the gantry and is fixedly connected to a horizontal plate, a spinning component is installed at the front end of the horizontal plate, a filter press plate is installed at the bottom of the spinning component, an up and down moving component is installed at the bottom of the rear end of the horizontal plate, and a loose component is installed at the bottom of the up and down moving component.

[0009] In one possible implementation, a water collecting trough is provided on the top of the support frame, a drain pipe connected to the water collecting trough is fixedly connected to the front side of the support frame, a drain outlet is fixedly connected to the front side of the dehydration bin, the drain outlet moved to the top of the support frame is located directly above the water collecting trough, a circular protrusion is integrally formed at the center of the bottom of the filter basket, a corresponding groove is provided at the center of the inner bottom wall of the dehydration bin, the circular protrusion is inserted into the groove, a filter cloth pocket is built into the filter basket, and a plurality of limit holes are evenly provided around the top of the filter basket.

[0010] In one possible implementation, the conveying mechanism includes two transmission wheels rotatably mounted on the left and right ends of a supporting frame, a conveying chain is transmission-connected between the outsides of the two transmission wheels, the dehydration bin is arranged on the conveying chain, a driving motor 1 for driving the transmission wheel on the right side is mounted on the supporting frame, and the driving motor 1 is transmission-connected to the transmission wheel on the right side through a belt.

[0011] In one possible implementation, the adjustment assembly includes a plurality of fixed rods fixedly connected between two front and rear partitions and arranged in a rectangular shape, a plurality of fixed rings equally spaced front and rear are commonly fixedly connected between the plurality of fixed rods, a through opening having the same size as the inner ring surface of the fixed ring is opened on the partition, a guide groove located above the through opening is opened on opposite sides of the two partitions, a movable rod is slidably installed up and down between the insides of the two guide grooves, a plurality of movable rings equally spaced front and rear are rotatably installed on the movable rod, the fixed rings and the movable rings are alternately distributed front and rear, and a transmission assembly for driving the movable ring to swing up and down is also installed between the two partitions.

[0012] In one possible implementation, the transmission assembly includes a first turntable rotatably installed on opposite sides of the two partitions, a first push rod is fixedly connected between the edges of the front and rear first turntables, the bottom end of the movable ring is rotatably connected to the first push rod, a transmission shaft is rotatably installed on the rear side of the outer shell, the front end of the transmission shaft rotates through the partition on the rear side and is coaxially fixedly connected to the first turntable on the rear side, the transmission shaft is connected to the spiral conveying roller on the right side by a belt drive, and the two spiral conveying rollers are connected by a gear set arranged on the outside of the outer shell.

[0013] In one possible implementation, the swing assembly includes a second turntable rotatably mounted on the front side of the outer shell, the outer ring surface of the second turntable is integrally formed with teeth, the edge of the front side of the second turntable is rotatably connected to a second push rod, a round rod located below the second turntable is fixedly mounted on the front side of the outer shell, a rocker arm is rotatably mounted on the round rod, a slide groove is provided at the top of the rocker arm, the second push rod is slidably mounted in the slide groove, the bottom end of the rocker arm is fixedly connected to the bottom end of the corrugated discharge pipe through a connecting rod, the connecting rod is rotatably connected to the rocker arm, the front end of the spiral conveying roller on the left side passes through the front of the outer shell and is coaxially fixedly connected to a transmission gear, and the transmission gear is meshed with the second turntable.

[0014] In one possible implementation, the spinning assembly includes a hydraulic rod fixedly mounted on the front end of the cross plate, the bottom of the telescopic section of the hydraulic rod is fixedly connected to a fixed frame, the bottom of the fixed frame is rotatably connected to a rotating rod, the bottom end of the rotating rod is fixedly mounted on the top of the filter press plate, the bottom of the filter press plate is fixedly connected to a second filter cloth, a driving motor three for driving the rotating rod to rotate is fixedly mounted on the inner side of the fixed frame, wing plates are symmetrically fixedly connected on the left and right sides of the rotating rod, an insert rod is slidably mounted on one end of the wing plate away from the rotating rod, a baffle located below the wing plate is fixedly mounted on the insert rod, and a return spring sleeved on the outside of the insert rod is fixedly connected between the baffle and the wing plate.

[0015] In one possible implementation, the up and down moving component includes an outer sleeve located below the horizontal plate, an inner sleeve is installed on the top of the outer sleeve for sliding up and down, the top of the inner sleeve is fixedly connected to the bottom of the rear end of the horizontal plate, a threaded rod is rotatably installed inside the outer sleeve, and the threaded rod is threadedly connected to the inner sleeve.

[0016] In one possible implementation, the loose component includes a drive motor four fixedly connected to the rear side of the outer sleeve, the bottom end of the threaded rod rotates and passes through the bottom of the outer sleeve and is connected to the output shaft of the drive motor four through a gear set, the bottom of the output shaft of the drive motor four is fixedly connected to a cross bar through a connecting shaft, and loose parts are installed on the cross bar. The loose parts include a scraper fixedly connected to the end of the cross bar, a number of tilling shovels are installed at equal intervals at the bottom of the cross bar, a rotating rod is symmetrically fixedly connected to the middle of the cross bar, and a number of cutting discs are distributed at equal intervals on the left and right of the rotating rod.

[0017] Beneficial effects of the present invention: 1. The present invention performs pre-dehydration treatment on the sludge by arranging a pre-dehydration mechanism. When the spiral conveying roller conveys the sludge, the adjusting component can change the size of the cavity between the spiral conveying roller and the spiral conveying roller, so that the spiral conveying roller squeezes the sludge during the conveying process to achieve the effect of preliminary dehydration. When the corrugated discharge pipe discharges the sludge, the spiral conveying roller can drive the swinging component to swing left and right, so that the swinging component drives the corrugated discharge pipe to swing left and right, which is conducive to laying the sludge more evenly in the filter basket and improving the effect of subsequent cold pressure dehydration.

[0018] 2. The present invention performs multiple extrusion dehydration with gradually increasing pressure on the sludge by setting a cold-pressing dehydration mechanism. By directly acting on the sludge particles with high pressure, most of the interstitial water in the wet sludge can be separated from the sludge. At the same time, high-pressure pressing can destroy the capillary surface tension and cohesion to separate the capillary water. No chemical agents need to be added during operation. Moreover, when the sludge is pressurized, the spinning component can also drive the filter basket to rotate, and use centrifugal force to throw out the water, further improving the effect of extrusion dehydration.

[0019] 3. The present invention uses a spinning component and a loosening component in coordination. After the spinning component pushes the filter press plate to extrude the sludge once, the loosening component is used to loosen and crush the extruded agglomerated sludge, so that the sludge can form a new dehydration surface, which is beneficial to the subsequent further extrusion and dehydration treatment. In addition, the sludge on the surface of the filter cloth bag can be scraped off during the loosening process to prevent the compacted sludge from clogging the filter cloth bag, which is beneficial to the discharge of the squeezed sewage. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The present invention is a flow chart for deep dehydration and drying of sludge.

[0021] Figure 2 It is a three-dimensional structural schematic diagram of the present invention.

[0022] Figure 3 It is a partial cross-sectional view of the dehydration mechanism of the present invention.

[0023] Figure 4 It is a schematic diagram of the three-dimensional structure of the fixed ring and the movable ring when they are matched with each other.

[0024] Figure 5 It is a schematic diagram of the three-dimensional structure of the first turntable of the present invention.

[0025] Figure 6 It is a three-dimensional structural schematic diagram of the swing assembly of the present invention.

[0026] Figure 7 It is a three-dimensional structural schematic diagram of the outer shell, the second driving motor and the corrugated discharge pipe of the present invention.

[0027] Figure 8 It is a left sectional view of the dehydration bin of the present invention.

[0028] Fig. 9 It is a three-dimensional structural schematic diagram of the cold pressing and dehydrating mechanism of the present invention.

[0029] Fig.10 It is a schematic diagram of the three-dimensional structure of the spinning assembly of the present invention.

[0030] Fig.11 It is a partial cross-sectional view of the up and down moving assembly of the present invention.

[0031] In the figure: 1, support frame; 11, water collecting trough; 12, drain pipe 1; 2, dehydration bin; 21, drain outlet; 3, conveying mechanism; 31, transmission wheel; 32, conveying chain belt; 33, driving motor 1; 4, filter basket; 41, filter cloth bag; 42, limit hole; 5, gantry; 6, pre-dehydration mechanism; 61, outer shell; 611, drain pipe 2; 62, partition; 63, adjustment component; 631, fixed rod; 632, fixed ring; 633, guide groove; 634, movable rod; 635, movable ring; 636, first turntable; 637, first push rod; 638, transmission shaft; 64, inner shell; 65, spiral conveying roller; 66, feed inlet; 67, corrugated discharge pipe; 68, driving motor 2; 69, swing component; 691, second turntable; 692, second push rod; 693, round rod ;694, rocker arm;695, slide;696, transmission gear;7, cold press dehydration mechanism;71, steering motor;72, cross plate;73, spinning assembly;731, hydraulic rod;732, fixed frame;733, rotating rod;734, driving motor three;735, wing plate;736, plug rod;737, baffle;738, return spring;74, filter plate;741, second filter cloth;75, up and down moving assembly;751, outer sleeve;752, inner sleeve;753, threaded rod;76, loose assembly;761, driving motor four;762, cross bar;763, scraper;764, soil shovel;765, rotating rod;766, cutting disc;81, sludge tank;82, electric gate valve;83, sludge conveying pump;91, continuous unloading and cleaning system;92, belt sludge conveyor. DETAILED DESCRIPTION

[0032] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described below, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0033] See also Figure 1 and Figure 2 A mechanical cold-pressed sludge deep dehydration and drying device comprises a support frame 1 and a gantry 5 arranged above the support frame 1, a plurality of dehydration bins 2 are evenly distributed circumferentially on the outside of the support frame 1, a conveying mechanism 3 for driving the dehydration bins 2 to move circumferentially is installed on the support frame 1, a filter basket 4 is installed inside the top dehydration bin 2, and a pre-dehydration mechanism 6 and a cold-pressed dehydration mechanism 7 located above the support frame 1 are installed on the gantry 5.

[0034] See also Figure 2-Figure 7The pre-dehydration mechanism 6 includes an outer shell 61 fixedly installed at the bottom of the horizontal section of the gantry 5, two partitions 62 are symmetrically installed in the front and rear of the outer shell 61, an adjusting component 63 is installed between the two partitions 62, an inner shell 64 is fixedly connected between the side of the partition 62 away from the adjusting component 63 and the outer shell 61, two left and right arranged spiral conveying rollers 65 are rotatably installed inside the outer shell 61, the spiral conveying rollers 65 pass through the adjusting component 63 and the front and rear inner shells 64, a feed port 66 is fixedly connected to the top of the rear inner shell 64, the feed port 66 is communicated with the interior of the rear inner shell 64, a corrugated discharge pipe 67 is fixedly connected to the bottom of the front inner shell 64, the corrugated discharge pipe 67 is communicated with the interior of the front inner shell 64, a driving motor 2 68 for driving the spiral conveying roller 65 to rotate is fixedly installed on the rear side of the outer shell 61, and a swinging component 69 for driving the corrugated discharge pipe 67 to swing left and right is installed on the front side.

[0035] See also Figure 2 and Figure 9-11 The cold pressing and dehydration mechanism 7 includes a steering motor 71 fixedly mounted on the top of the horizontal section of the gantry 5. The output shaft of the steering motor 71 rotates and passes through the bottom of the horizontal section of the gantry 5 and is fixedly connected to a horizontal plate 72. A spinning assembly 73 is installed at the front end of the horizontal plate 72, and a filter press plate 74 is installed at the bottom of the spinning assembly 73. An up-and-down moving assembly 75 is installed at the bottom of the rear end of the horizontal plate 72, and a loose assembly 76 is installed at the bottom of the up-and-down moving assembly 75.

[0036] See also Figure 2-Figure 11 A water collecting trough 11 is provided on the top of the supporting frame 1, and a drainage pipe 12 connected to the water collecting trough 11 is fixedly connected to the front side of the supporting frame 1. A drainage port 21 is fixedly connected to the front side of the dehydration bin 2. The drainage port 21 moved to the top of the supporting frame 1 is located directly above the water collecting trough 11. A circular protrusion is integrally formed at the center of the bottom of the filter basket 4, and a corresponding groove is provided at the center of the inner bottom wall of the dehydration bin 2. The circular protrusion is inserted into the groove. A filter cloth pocket 41 is built into the filter basket 4. A plurality of limiting holes 42 are evenly provided circumferentially on the top of the filter basket 4, and a plurality of balls are installed circumferentially on the bottom of the filter basket 4.

[0037] When the conveying mechanism 3 drives the dehydration bin 2 to move to the top of the right end of the supporting frame 1, the filter basket 4 is placed in the dehydration bin 2. When placed, the circular protrusion at the bottom of the filter basket 4 is inserted into the groove inside the dehydration bin 2, so that the filter basket 4 can rotate stably inside the dehydration bin 2. The ball bearings at the bottom of the filter basket 4 can reduce the resistance to the rotation of the filter basket 4. The limiting hole 42 is used to cooperate with the spinning component 73, so that the spinning component 73 can drive the filter basket 4 to rotate.

[0038] See also Figure 2-Figure 11The conveying mechanism 3 includes two transmission wheels 31 rotatably installed at the left and right ends of the supporting frame 1, and a conveying chain belt 32 is transmission-connected between the outsides of the two transmission wheels 31. The dehydration bin 2 is arranged on the conveying chain belt 32. A driving motor 33 for driving the right transmission wheel 31 is installed on the supporting frame 1. The driving motor 33 is transmission-connected to the right transmission wheel 31 through a belt. The horizontal distance between two adjacent dehydration bins 2 on the same horizontal plane is equal to the distance between the pre-dehydration mechanism 6 and the cold pressure dehydration mechanism 7.

[0039] The driving motor 33 drives the transmission wheel 31 to rotate counterclockwise, and then the transmission wheel 31 drives the conveyor chain 32 to rotate counterclockwise, so that the conveyor chain 32 drives the dehydration bin 2 to move, and then the dehydration bin 2 drives the filter basket 4 to move leftward to the bottom of the corrugated discharge pipe 67 and the filter press plate 74 in turn, so as to continuously transport the sludge to the cold press dehydration mechanism 7 for extrusion.

[0040] See also Figure 2-Figure 7 The adjustment component 63 includes a plurality of fixed rods 631 fixedly connected between the front and rear partitions 62 and arranged in a rectangular shape, a plurality of fixed rings 632 equally spaced front and rear are commonly fixedly connected between the plurality of fixed rods 631, a through opening having the same size as the inner ring surface of the fixed ring 632 is provided on the partition 62, a guide groove 633 located above the through opening is provided on the opposite sides of the two partitions 62, a movable rod 634 is slidably installed up and down between the insides of the two guide grooves 633, a plurality of movable rings 635 equally spaced front and rear are rotatably installed on the movable rod 634, the fixed rings 632 and the movable rings 635 are alternately distributed front and rear, and a transmission component for driving the movable ring 635 to swing up and down is also installed between the two partitions 62.

[0041] See also Figure 2-Figure 7 The transmission assembly includes a first turntable 636 rotatably installed on the opposite sides of the two partitions 62, a first push rod 637 is fixedly connected between the edges of the front and rear first turntables 636, the bottom end of the movable ring 635 is rotatably connected to the first push rod 637, a transmission shaft 638 is rotatably installed on the rear side of the outer shell 61, the front end of the transmission shaft 638 rotates and passes through the rear partition 62 and is coaxially fixedly connected with the rear first turntable 636, the transmission shaft 638 is connected to the right side of the spiral conveying roller 65 through a belt drive, the two spiral conveying rollers 65 are connected through a gear set arranged on the outside of the outer shell 61, and the output shaft of the driving motor 2 68 is fixedly connected to the left side of the spiral conveying roller 65.

[0042] See also Figure 2-Figure 7 The bottom of the outer shell 61 is fixedly connected to a drain pipe 2 611 which is in communication therewith. The drain pipe 2 611 is located between the front and rear partitions 62 .

[0043] The sludge is added to the inner shell 64 at the rear side from the feed inlet 66, and the left spiral conveying roller 65 is driven to rotate by the driving motor 2 68. The left spiral conveying roller 65 drives the right spiral conveying roller 65 to rotate through the gear set, so that the two spiral conveying rollers 65 cooperate to convey the sludge forward. The right spiral conveying roller 65 will drive the transmission shaft 638 to rotate during the rotation, and then the transmission shaft 638 drives the first turntable 636 and the first push rod 637 to rotate. The first push rod 637 is used to drive the movable ring 635 to swing up and down in a cycle, thereby continuously changing the distance between the movable ring 635 and the spiral conveying roller 65. The movable ring 635 and the spiral conveying roller 65 cooperate to continuously squeeze the sludge during the sludge transportation process, and preliminarily dehydrate the sludge. The squeezed sewage falls to the bottom of the outer shell 61 through the gap between the fixed ring 632 and the movable ring 635, and is finally discharged outward from the drain pipe 2 611.

[0044] See also Figure 2-Figure 8 The swing assembly 69 includes a second turntable 691 rotatably mounted on the front side of the outer shell 61, and teeth are integrally formed on the outer ring surface of the second turntable 691. The edge of the front side of the second turntable 691 is rotatably connected to the second push rod 692. A round rod 693 located below the second turntable 691 is fixedly mounted on the front side of the outer shell 61, and a swing rod 694 is rotatably mounted on the round rod 693. A slide groove 695 is provided at the top of the swing rod 694, and the second push rod 692 is slidably mounted in the slide groove 695. The bottom end of the swing rod 694 is fixedly connected to the bottom end of the corrugated discharge pipe 67 through a connecting rod, and the connecting rod is rotatably connected to the swing rod 694. The front end of the left spiral conveying roller 65 passes through the front of the outer shell 61 and is coaxially fixedly connected to a transmission gear 696, which meshes with the second turntable 691.

[0045] After the sludge is transported to the inner shell 64 on the front side, it is discharged from the corrugated discharge pipe 67. At the same time, the transmission gear 696 is driven to rotate through the spiral conveying roller 65 on the left side, and then the transmission gear 696 drives the second turntable 691 and the second push rod 692 to rotate in a circle. During the rotation, the second push rod 692 will push the swing rod 694 to swing left and right, and then the swing rod 694 drives the corrugated discharge pipe 67 to swing left and right, so that the sludge is more evenly laid in the filter cloth bag 41 in the filter basket 4.

[0046] See also Figure 2-Figure 11The spinning assembly 73 includes a hydraulic rod 731 fixedly installed at the front end of the cross plate 72, the bottom of the telescopic section of the hydraulic rod 731 is fixedly connected to a fixed frame 732, the bottom of the fixed frame 732 is rotatably connected to a rotating rod 733, the bottom end of the rotating rod 733 is fixedly installed on the top of the filter press plate 74, and the bottom of the filter press plate 74 is fixedly connected to a second filter cloth 741, and a driving motor 3 734 for driving the rotating rod 733 to rotate is fixedly installed on the inner side of the fixed frame 732, and the left and right sides of the rotating rod 733 are symmetrically fixedly connected with wing plates 735, and an insertion rod 736 is slidably installed up and down at one end of the wing plate 735 away from the rotating rod 733, and a blocking piece 737 located below the wing plate 735 is fixedly installed on the insertion rod 736, and a return spring 738 arranged on the outside of the insertion rod 736 is fixedly connected between the blocking piece 737 and the wing plate 735, and two telescopic rods symmetrically arranged on the left and right are fixedly connected between the upper end of the fixed frame 732 and the lower end of the cross plate 72.

[0047] When the filter press plate 74 is moved downward by the hydraulic rod 731, the filter press plate 74 is pushed downward by the hydraulic rod 731. The telescopic rod can guide the filter press plate 74, improve the stability of the filter press plate 74, and make the filter press plate 74 squeeze and dehydrate the sludge in the corresponding filter basket 4. When the filter press plate 74 moves downward, the insertion rod 736 will be pressed against the top of the side wall of the corresponding filter basket 4, and the return spring 738 will contract. The overdrive motor 734 drives the rotating rod 733 and the filter press plate 74 to rotate, and then the rotating rod 733 drives the insertion rod 736 to rotate along the top circumference of the side wall of the filter basket 4 through the wing plate 735. When the insertion rod 736 is aligned with the limiting hole 42, the rebound force of the reset spring 738 is used to insert the bottom end of the insertion rod 736 into the limiting hole 42, and then the insertion rod 736 drives the filter basket 4 to rotate together, and the centrifugal force generated by the rotation assists in dehydrating the sludge, thereby improving the sludge dehydration effect.

[0048] See also Figure 2 , Fig. 9 and Fig.11 The up-and-down moving component 75 includes an outer sleeve 751 located below the horizontal plate 72, an inner sleeve 752 is slidably installed on the top of the outer sleeve 751, the top of the inner sleeve 752 is fixedly connected to the bottom of the rear end of the horizontal plate 72, and a threaded rod 753 is rotatably installed inside the outer sleeve 751, and the threaded rod 753 is threadedly connected to the inner sleeve 752.

[0049] See also Figure 2-Figure 11The loose component 76 includes a drive motor 4 761 fixedly connected to the rear side of the outer sleeve 751, a telescopic connecting rod is connected between the upper end of the drive motor 4 761 and the lower end of the cross plate 72, the bottom end of the threaded rod 753 rotates and passes through the bottom of the outer sleeve 751 and is connected to the output shaft of the drive motor 4 761 through a gear set, the bottom of the output shaft of the drive motor 4 761 is fixedly connected to a cross bar 762 through a connecting shaft, and loose parts are installed on the cross bar 762, the loose parts include a scraper 763 fixedly connected to the end of the cross bar 762, a plurality of tilling shovels 764 are installed at equal intervals at the bottom of the cross bar 762, a rotating rod 765 is fixedly connected to the middle of the cross bar 762 symmetrically on the left and right, and a plurality of cutting discs 766 are distributed on the rotating rod 765 at equal intervals on the left and right.

[0050] After the sludge is squeezed and dehydrated once, the steering motor 71 drives the cross plate 72 to rotate 180 degrees, so that the loose component 76 and the filter plate 74 are interchanged, and the loose component 76 is moved to the top of the corresponding filter basket 4, and then the drive motor 4 761 cooperates with the gear set to drive the threaded rod 753 to rotate. When the position of the inner sleeve 752 is fixed, the threaded rod 753 moves downward while rotating, so that the threaded rod 753 drives the outer sleeve 751 to move downward relatively, and the outer sleeve 751 drives the drive motor 4 761 to move downward at the same time. The motor 4 761 also drives the cross bar 762 and the rotating rod 765 to rotate, and then the turning shovel 764 turns the sludge from top to bottom to loosen the sludge that has been squeezed and compacted. When the turning shovel 764 turns the sludge, the cutting disc 766 can continuously break up the sludge that has become lumps after turning, making the sludge looser, so as to provide a new dehydration surface, which is beneficial to the subsequent squeezing and dehydration of the sludge. The scraper 763 and the turning shovel 764 can also scrape off the sludge adhered to the filter cloth bag 41, which is beneficial to the discharge of the sewage squeezed out during the subsequent squeezing.

[0051] See also Figure 1-Figure 11 The mechanical cold-pressed sludge deep dehydration and drying device also includes a sludge collection and storage system and a sludge unloading system. The sludge collection and storage system includes a sludge pool 81. The bottom of the sludge pool 81 is connected to an electric gate valve 82. The electric gate valve 82 is connected to a sludge conveying pump 83 through a pipeline. The output port of the sludge conveying pump 83 is connected to the feed port 66 through a pipeline. The sludge unloading system includes a continuous unloading and cleaning system 91 located on the left side of the supporting frame 1. A belt sludge conveyor 92 is installed on the left side of the continuous unloading and cleaning system 91.

[0052] When the sludge is to be dehydrated, the electric gate valve 82 is opened, and then the sludge is transported to the feed port 66 through the sludge conveying pump 83, so that the pre-dehydration mechanism 6 pre-dehydrates the sludge, and then the sludge pre-treated by the pre-dehydration mechanism 6 is discharged into the filter basket 4, and the conveying mechanism 3 conveys the filter basket 4 with sludge to the cold pressure dehydration mechanism 7 for extrusion dehydration, and the sludge after extrusion dehydration is conveyed by the filter basket 4 to the left end of the top of the support frame 1, and then the external hoisting machine lifts the filter basket 4 to the mud unloading station in the continuous unloading and cleaning system 91, and the sludge is unloaded from the filter basket 4 through the continuous unloading and cleaning system 91, and the unloaded sludge falls onto the belt sludge conveyor 92, and then the belt sludge conveyor 92 conveys the sludge to the subsequent treatment process.

[0053] The present invention also provides a mechanical cold-pressed sludge deep dehydration and drying process, which specifically includes the following steps: S1: the sludge is discharged into the sludge pool 81 after being measured, and then the electric gate valve 82 is opened, and the sludge is transported to the feed port 66 through the sludge transport pump 83.

[0054] S2: Place the filter basket 4 into the dehydration bin 2 at the top right end of the support frame 1, and the circular protrusion at the bottom of the filter basket 4 is inserted into the groove inside the dehydration bin 2. The driving motor 33 drives the transmission wheel 31 to rotate counterclockwise, and then the transmission wheel 31 drives the conveyor chain 32 to rotate counterclockwise, so that the conveyor chain 32 drives the top dehydration bin 2 to move to the left, and then the dehydration bin 2 drives the filter basket 4 to move to the left in sequence to the bottom of the corrugated discharge pipe 67.

[0055] S3: The spiral conveying roller 65 is driven to rotate by the second driving motor 68 to convey the sludge forward. At the same time, the spiral conveying roller 65 drives the transmission shaft 638 through the belt, and then the transmission shaft 638 drives the first turntable 636 and the first push rod 637 to rotate. The first push rod 637 is used to drive the movable ring 635 to swing up and down in a circle, thereby continuously changing the distance between the movable ring 635 and the spiral conveying roller 65. The movable ring 635 and the spiral conveying roller 65 can cooperate to continuously squeeze the sludge during the sludge conveying process, and perform preliminary dehydration on the sludge. The squeezed sewage falls to the bottom of the outer shell 61 through the gap between the fixed ring 632 and the movable ring 635, and is finally discharged outward from the second drain pipe 611.

[0056] S4: The sludge is transported by the spiral conveying roller 65 to the corrugated discharge pipe 67 and discharged downward. The transmission gear 696 is driven to rotate by the spiral conveying roller 65 on the left, and then the transmission gear 696 drives the second turntable 691 and the second push rod 692 to rotate in a circle. During the rotation, the second push rod 692 will push the swing rod 694 to swing left and right, and then the swing rod 694 drives the corrugated discharge pipe 67 to swing left and right, so that the sludge is more evenly laid in the first filter cloth bag 41 in the filter basket 4, and then the conveying chain belt 32 drives the dehydration bin 2 and the filter basket 4 to continue to move to the left to the bottom of the filter press plate 74.

[0057] S5: The filter press plate 74 is pushed downward by the hydraulic rod 731, so that the filter press plate 74 squeezes and dehydrates the sludge in the corresponding filter basket 4. When the filter press plate 74 moves downward, the insertion rod 736 will be pressed against the top of the corresponding filter basket 4 side wall. The return spring 738 contracts. While the filter press plate 74 squeezes the sludge, the driving motor 3 734 drives the rotating rod 733 and the filter press plate 74 to rotate. Then the rotating rod 733 drives the insertion rod 736 to rotate along the top circumference of the side wall of the filter basket 4 through the wing plate 735. When the insertion rod 736 is aligned with the limiting hole 42, the rebound force of the return spring 738 is used to insert the bottom end of the insertion rod 736 into the limiting hole 42. Then the insertion rod 736 drives the filter basket 4 to rotate together, and the centrifugal force generated by the rotation assists in dehydrating the sludge.

[0058] S6: After one dehydration is completed, the hydraulic rod 731 drives the filter press plate 74 to move upward, and then drives the threaded rod 753 to rotate through the driving motor 4 761, and uses the threaded rod 753 to drive the inner sleeve 752 to extend upward, thereby pushing the outer sleeve 751 and the driving motor 4 761 to move downward. At the same time, the driving motor 4 761 also drives the cross bar 762 and the rotating rod 765 to rotate, and then the soil turning shovel 764 turns the sludge from top to bottom to loosen the squeezed and compacted sludge again, and at the same time, the cutting disc 766 continuously cuts the sludge into blocks after turning.

[0059] S7: After the primary loosening is completed, the driving motor 4 761 drives the threaded rod 753 to rotate in the opposite direction, so that the up and down moving assembly 75 drives the loosening assembly 76 to move upward, and then the steering motor 71 drives the cross plate 72 to rotate 180 degrees, so that the loosening assembly 76 and the filter press plate 74 are exchanged, and the filter press plate 74 is moved back to the top of the filter basket 4, and then S5 is repeated to perform secondary extrusion and dehydration on the sludge, and the downward pressure of the hydraulic rod 731 on the sludge is increased during the secondary dehydration.

[0060] S8: After the secondary dehydration is completed, S6 is repeated to loosen the sludge for the second time. After the secondary loosening is completed, the loosening component 76 and the filter press plate 74 are swapped again to move the filter press plate 74 back to the top of the filter basket 4. Then S5 is repeated to squeeze and dehydrate the sludge three times. During the third dehydration, the downward pressure of the hydraulic rod 731 on the sludge is increased again.

[0061] S9: After three dehydration steps are completed, the hydraulic rod 731 drives the filter press plate 74 to move upward, and then the conveyor chain 32 drives the dehydration bin 2 and the filter basket 4 to continue to move left to the top of the left end of the support frame 1, and then the external hoisting machine lifts the filter basket 4 to the mud unloading station in the continuous unloading and cleaning system 91, and the sludge is unloaded from the filter basket 4 through the continuous unloading and cleaning system 91, and the unloaded sludge falls onto the belt sludge conveyor 92, and then the belt sludge conveyor 92 transports the sludge to the subsequent treatment process.

[0062] It should be noted that the specific number of pressing and dehydration can be selected according to actual needs, but the downward pressure exerted by the filter press plate 74 on the sludge increases with the number of pressing times.

[0063] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connect", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, an integral connection, or a sliding connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0064] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, all equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A mechanical cold-pressing sludge deep dehydration and drying device, comprising a support frame (1) and a gantry (5) arranged above the support frame (1), characterized in that: A plurality of dehydration bins (2) are evenly distributed around the outside of the support frame (1); a conveying mechanism (3) is installed on the support frame (1) to drive the dehydration bins (2) to move in a circumferential manner; a filter basket (4) is installed inside the top of the dehydration bins (2); and a pre-dehydration mechanism (6) and a cold pressure dehydration mechanism (7) located above the support frame (1) are installed on the gantry (5); The pre-dehydration mechanism (6) comprises an outer shell (61) fixedly mounted on the bottom of the horizontal section of the gantry (5); two partitions (62) are symmetrically mounted in the front and rear of the outer shell (61); an adjustment component (63) is mounted between the two partitions (62); an inner shell (64) is fixedly connected to the outer shell (61) on a side of the partition (62) away from the adjustment component (63); two left-right arranged spiral conveying rollers (65) are rotatably mounted in the inner shell (61); the spiral conveying rollers (65) penetrate the adjustment component (63); 3) and two front and rear inner shells (64), the top of the rear inner shell (64) is fixedly connected with a feed port (66), the feed port (66) is communicated with the interior of the rear inner shell (64), the bottom of the front inner shell (64) is fixedly connected with a corrugated discharge pipe (67), the corrugated discharge pipe (67) is communicated with the interior of the front inner shell (64), the rear side of the outer shell (61) is fixedly installed with a second drive motor (68) for driving the spiral conveying roller (65) to rotate, and the front side is installed with a swing component (69) for driving the corrugated discharge pipe (67) to swing left and right; The cold-pressing dehydration mechanism (7) comprises a steering motor (71) fixedly mounted on the top of the horizontal section of the gantry (5); the output shaft of the steering motor (71) rotates and passes through the bottom of the horizontal section of the gantry (5) and is fixedly connected to a transverse plate (72); a spinning assembly (73) is mounted on the front end of the transverse plate (72); a filter press plate (74) is mounted on the bottom of the spinning assembly (73); an up-and-down moving assembly (75) is mounted on the bottom of the rear end of the transverse plate (72); and a loosening assembly (76) is mounted on the bottom of the up-and-down moving assembly (75); A water collecting trough (11) is provided on the top of the support frame (1), a drainage pipe (12) in communication with the water collecting trough (11) is fixedly connected to the front side of the support frame (1), a drainage port (21) is fixedly connected to the front side of the dehydration bin (2), the drainage port (21) moved to the top of the support frame (1) is located directly above the water collecting trough (11), a circular protrusion is integrally formed at the center of the bottom of the filter basket (4), a corresponding groove is provided at the center of the inner bottom wall of the dehydration bin (2), the circular protrusion is inserted into the groove, a filter cloth pocket (41) is built into the filter basket (4), and a plurality of limiting holes (42) are evenly provided around the top of the filter basket (4); The adjustment assembly (63) comprises a plurality of fixed rods (631) fixedly connected between the front and rear partitions (62) and arranged in a rectangular shape; a plurality of fixed rings (632) uniformly spaced front and rear are commonly fixedly connected between the plurality of fixed rods (631); a through opening having the same size as the inner ring surface of the fixed ring (632) is provided on the partition (62); a guide groove (633) located above the through opening is provided on opposite sides of the two partitions (62); a movable rod (634) is slidably mounted up and down between the two guide grooves (633); a plurality of movable rings (635) uniformly spaced front and rear are rotatably mounted on the movable rod (634); the fixed rings (632) and the movable rings (635) are alternately arranged front and rear; and a transmission assembly for driving the movable ring (635) to swing up and down is also mounted between the two partitions (62); The transmission assembly comprises a first rotating disk (636) rotatably mounted on opposite sides of the two partitions (62); a first push rod (637) is fixedly connected between the edges of the front and rear first rotating disks (636); the bottom end of the movable ring (635) is rotatably connected to the first push rod (637); a transmission shaft (638) is rotatably mounted on the rear side of the outer shell (61); the front end of the transmission shaft (638) rotates through the partition (62) on the rear side and is coaxially fixedly connected to the first rotating disk (636) on the rear side; the transmission shaft (638) is connected to the right spiral conveying roller (65) through a belt transmission; and the two spiral conveying rollers (65) are connected through a gear set arranged on the outside of the outer shell (61); The swing assembly (69) comprises a second rotating disk (691) rotatably mounted on the front side of the outer shell (61); teeth are integrally formed on the outer ring surface of the second rotating disk (691); a second push rod (692) is rotatably connected to the edge of the front side of the second rotating disk (691); a round rod (693) located below the second rotating disk (691) is fixedly mounted on the front side of the outer shell (61); a swing rod (694) is rotatably mounted on the round rod (693); and the swing rod (694) is rotatably mounted on the swing rod (694). ) is provided with a slide groove (695) at the top end, the second push rod (692) is slidably installed in the slide groove (695), the bottom end of the swing rod (694) is fixedly connected to the bottom end of the corrugated discharge pipe (67) through a connecting rod, the connecting rod is rotatably connected to the swing rod (694), the front end of the spiral conveying roller (65) on the left side passes through the front of the outer shell (61) and is coaxially fixedly connected with a transmission gear (696), and the transmission gear (696) is meshed with the second turntable (691); The spinning assembly (73) comprises a hydraulic rod (731) fixedly mounted on the front end of the horizontal plate (72); the bottom of the telescopic section of the hydraulic rod (731) is fixedly connected to a fixed frame (732); the bottom of the fixed frame (732) is rotatably connected to a rotating rod (733); the bottom end of the rotating rod (733) is fixedly mounted on the top of a filter press plate (74); the bottom of the filter press plate (74) is fixedly connected to a filter cloth (741); and a driving member is fixedly mounted on the inner side of the fixed frame (732). A third driving motor (734) for rotating the rotating rod (733), the left and right sides of the rotating rod (733) are symmetrically fixedly connected with wing plates (735), one end of the wing plate (735) away from the rotating rod (733) is slidably mounted with an insertion rod (736) up and down, a baffle (737) located below the wing plate (735) is fixedly mounted on the insertion rod (736), and a return spring (738) sleeved on the outside of the insertion rod (736) is fixedly connected between the baffle (737) and the wing plate (735); The up-and-down moving assembly (75) comprises an outer sleeve (751) located below the horizontal plate (72); an inner sleeve (752) is slidably mounted on the top of the outer sleeve (751); the top of the inner sleeve (752) is fixedly connected to the bottom of the rear end of the horizontal plate (72); a threaded rod (753) is rotatably mounted inside the outer sleeve (751); the threaded rod (753) is threadedly connected to the inner sleeve (752); The loose component (76) includes a fourth drive motor (761) fixedly connected to the rear side of the outer sleeve (751); the bottom end of the threaded rod (753) rotates to penetrate the bottom of the outer sleeve (751) and is then connected to the output shaft of the fourth drive motor (761) through a gear set; the bottom of the output shaft of the fourth drive motor (761) is fixedly connected to a cross bar (762) through a connecting shaft; a loose component is installed on the cross bar (762); the loose component includes a scraper (763) fixedly connected to the end of the cross bar (762); a plurality of tilling shovels (764) are installed at equal intervals at the bottom of the cross bar (762); a rotating rod (765) is fixedly connected to the middle of the cross bar (762) symmetrically on the left and right; and a plurality of cutting discs (766) are distributed on the rotating rod (765) at equal intervals on the left and right.

2. The mechanical cold-pressing sludge deep dehydration and drying device according to claim 1 is characterized by: The conveying mechanism (3) comprises two transmission wheels (31) rotatably mounted on the left and right ends of the support frame (1); a conveying chain belt (32) is transmission-connected between the outsides of the two transmission wheels (31); the dehydration bin (2) is arranged on the conveying chain belt (32); a driving motor (33) for driving the transmission wheel (31) on the right side is mounted on the support frame (1); the driving motor (33) is transmission-connected to the transmission wheel (31) on the right side via a belt.

3. A mechanical cold-pressed sludge deep dehydration and drying process, which is completed by using the mechanical cold-pressed sludge deep dehydration and drying device as claimed in claim 1, characterized in that: The following steps are involved: S1: placing the filter basket (4) into the dehydration bin (2) at the top right end of the support frame (1), inserting the circular protrusion at the bottom of the filter basket (4) into the groove inside the dehydration bin (2), driving the top of the dehydration bin (2) to move to the left through the conveying mechanism (3), and then the dehydration bin (2) drives the filter basket (4) to move to the left in sequence to the bottom of the corrugated discharge pipe (67); S2: driving the spiral conveying roller (65) to rotate by driving the second motor (68) to convey the sludge forward, and at the same time adjusting the component (63) to continuously change the distance between the movable ring (635) and the spiral conveying roller (65), so that the spiral conveying roller (65) can continuously squeeze the sludge during the sludge conveying process, thereby preliminarily dehydrating the sludge; S3: The sludge is transported by the spiral conveying roller (65) to the corrugated discharge pipe (67) and discharged downward. The left spiral conveying roller (65) drives the swing assembly (69) to operate. The swing assembly (69) drives the corrugated discharge pipe (67) to swing left and right, so that the corrugated discharge pipe (67) transports the sludge to the filter basket (4) more evenly. Then, the conveying chain belt (32) drives the dehydration bin (2) and the filter basket (4) to continue to move leftward to below the filter press plate (74); S4: pushing the filter press plate (74) to rotate downward through the spinning assembly (73), so that the filter press plate (74) spins and dehydrates the sludge in the corresponding filter basket (4); S5: After the primary dehydration is completed, the spinning assembly (73) drives the filter press plate (74) to move upward, and then the steering motor (71) drives the transverse plate (72) to rotate 180 degrees, so that the loosening assembly (76) and the filter press plate (74) are interchanged, and then the up-and-down moving assembly (75) pushes the loosening assembly (76) to move downward, and then the squeezed and compacted sludge is loosened again by the loosening assembly (76); S6: After the primary loosening is completed, the up-down moving assembly (75) drives the loosening assembly (76) to move upward, and then the steering motor (71) drives the horizontal plate (72) to rotate 180 degrees, so that the loosening assembly (76) and the filter press plate (74) are interchanged, and then S4 is repeated to perform secondary squeezing and dehydrating of the sludge, and the downward pressure of the spinning assembly (73) on the sludge is increased during the secondary dehydration; S7: After the secondary dehydration is completed, S5 is repeated to loosen the sludge for a second time. After the secondary loosening is completed, the loosening component (76) and the filter press plate (74) are again exchanged, so that the filter press plate (74) is moved back to the top of the filter basket (4). Then, S4 is repeated to squeeze and dehydrate the sludge for a third time. During the third dehydration, the downward pressure of the spinning component (73) on the sludge is increased again. S8: After the three dehydration steps are completed, the spinning assembly (73) drives the filter press plate (74) to move upward, and then the conveyor chain (32) drives the dehydration bin (2) and the filter basket (4) to continue to move leftward to the top of the left end of the support frame (1), and then an external lifting machine lifts the filter basket (4) to a subsequent processing step.

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