A sludge dehydration and drying treatment device and treatment method

Abstract

The present invention relates to the technical field of sludge dehydration and drying treatment, and in particular to a sludge dehydration and drying treatment equipment and treatment method. In the existing screw stacking machine, the overall sludge dehydration and drying treatment work is time-consuming, the work efficiency is low, and the sludge is unevenly dried. The technical implementation scheme of the present invention is: a sludge dehydration and drying treatment equipment, including a mounting frame and a cylinder; the mounting frame is equipped with a cylinder; it also includes a conical cylinder, an auger and a scraper, etc.; the mounting frame is fixedly connected to the conical cylinder; the conical cylinder is rotatably connected to the auger; the conveying part of the auger is fixedly connected to the scraper. The present invention solves the problem existing in the prior art that the sludge is squeezed in a manner of gradually reducing the volume. When the sludge reaches the minimum volume of the screw stacking machine, the water in the sludge can be effectively squeezed out, which takes a long time as a whole and has low work efficiency; and the water content of the sludge in each area is inconsistent, resulting in uneven sludge drying.

Description

Technical Field

[0001] The present invention relates to the technical field of sludge dehydration and drying treatment, and in particular to a sludge dehydration and drying treatment device and a treatment method. Background Art

[0002] Sewage snail stackers are widely used in sewage treatment. After the sludge is concentrated by gravity in the concentration section, it is transported to the dehydration section. During the forward movement, as the filter gap and the screw pitch gradually become smaller, and under the blocking effect of the back pressure plate, a huge internal pressure is generated, and the volume continues to shrink, achieving the purpose of full dehydration, and the generated sludge filter cake is discharged from the mud outlet.

[0003] However, when squeezing the sludge in a way of gradually reducing the volume, the water in the sludge can only be effectively squeezed out when the sludge reaches the minimum volume of the screw stacker, which is time-consuming and has low work efficiency.

[0004] Even at the smallest volume, the water squeezed out of the sludge in the central area needs to flow through the sludge in the edge area before it can be discharged through the drain. In this way, even if the water in the central area is effectively squeezed out, a small amount of water that has infiltrated from the central area will still remain in the sludge in the edge area, making the water content of the sludge in each area inconsistent, resulting in uneven sludge drying. Summary of the invention

[0005] In order to overcome the shortcomings of the existing screw stacking machine that uses a method of gradually reducing the volume to squeeze the sludge, which takes a long time as a whole and has low working efficiency; and the water content of the sludge in each area is inconsistent, resulting in uneven sludge drying, the present invention provides a sludge dehydration and drying treatment equipment.

[0006] The technical scheme of the present invention is: a sludge dewatering and drying treatment equipment, including a mounting frame and a cylinder; the mounting frame is equipped with a cylinder; it also includes a conical cylinder, an auger, a first motor, a first ring, a second ring, an L-shaped hollow scraper, a scraper and a power unit; the mounting frame is fixedly connected to the conical cylinder, and the conical cylinder part is located inside the cylinder, and a first cavity is formed between the cylinder and the conical cylinder; the conical cylinder is provided with a mud inlet; the conical cylinder is provided with a plurality of chute groups, and each chute group consists of three chute groups; the conical cylinder is rotatably connected with the auger, and the outer edge of the auger is in contact with the inner wall of the conical cylinder; the conveying part of the auger is fixedly connected with the scraper; the conical cylinder is equipped with the first motor, The first motor output shaft is fixedly connected to the auger; a first ring is rotatably connected inside the cylinder; a second ring is rotatably connected inside the cylinder, and the second ring is rotatably connected to the right part of the conical cylinder; the second ring and the inner right wall of the cylinder together form a second cavity; the first ring and the second ring are jointly fixedly connected to an L-shaped hollow scraper, and the lower part of the L-shaped hollow scraper is in contact with the outer wall of the conical cylinder, and the upper part of the L-shaped hollow scraper is in contact with the inner wall of the cylinder; the L-shaped hollow scraper is provided with a plurality of scraping parts, and the positions of the scraping parts correspond to the positions of the chute groups; a power unit is installed on the mounting frame, and the power unit is fixedly connected to the first ring, and the power unit is used to drive the first ring to rotate.

[0007] More preferably, the L-shaped hollow scraper is provided with a plurality of wiper parts distributed along the inclined curve array of the L-shaped hollow scraper, and the wiper parts and the mud scraper parts are alternately arranged, and the wiper parts are in contact with the outer wall of the conical tube.

[0008] More preferably, it also includes a water vapor removal mechanism; the water vapor removal mechanism includes a hot air box and a ventilation pipe; the hot air box is installed inside the cylinder; the hot air box is provided with a ventilation pipe, and the ventilation pipe passes through the second ring and is connected to the first cavity.

[0009] More preferably, the L-shaped hollow scraper is provided with a water absorbing portion, and the water absorbing portion is in contact with the inner wall of the cylinder.

[0010] More preferably, the water vapor removal mechanism also includes a storage box; the first ring and the second ring are jointly fixed with the storage box, and the storage box is connected to the rear of the L-shaped hollow scraper; the storage box is provided with a drain pipe, and the drain pipe passes through the second ring and is connected to an external drainage device.

[0011] More preferably, it also includes a secondary dehydration and drying mechanism; a discharge frame, a pump, an air inlet pipe and an air outlet pipe; the mounting frame and the cylinder are jointly fixed with the discharge frame, and the upper part of the discharge frame is connected with the lower part of the cylinder; the discharge frame is provided with a third cavity and a fourth cavity; the third cavity is installed with a pump; the pump is connected with the air inlet pipe, and the air inlet pipe is connected with the second cavity; the pump is connected with the air outlet pipe, and the air outlet pipe is connected with the fourth cavity.

[0012] More preferably, the secondary dehydration and drying mechanism also includes a roller, a second gear and a second gear ring; the fourth cavity is rotatably connected to two rollers; each of the two rollers is fixed with a second gear ring, and the rear second gear ring is meshed with the first gear; the discharge frame is rotatably connected to the second gear through a rotating shaft, and the second gear is meshed with the first gear, and the second gear is meshed with the front second gear ring.

[0013] More preferably, it also includes a residue scraping unit; the residue scraping unit includes a cleaning rope; the fourth cavity is provided with two cleaning ropes, and the front cleaning rope is located on the front side of the front roller, and the rear cleaning rope is located on the rear side of the rear roller, and the two cleaning ropes are respectively contacted and connected with the rollers on the corresponding sides.

[0014] More preferably, the residual scraping unit also includes a guide block and a toggle plate; the inner left wall and the inner right wall of the fourth cavity are each equipped with two guide blocks distributed front and back; the two front guide blocks are commonly connected to the front cleaning rope, and the two rear guide blocks are commonly connected to the rear cleaning rope; the left and right ends of the rotating roller are each connected to a toggle plate through a torsion spring, and all the toggle plates are commonly connected to the discharge frame for rotation.

[0015] A sludge dehydration and drying treatment method, specifically comprising the following steps:

[0016] Step 1: Sludge dehydration and drying operation, the sludge in the conical cylinder is intermittently squeezed out from the chute by the scraper, and the sludge exposed in the chute is dried by the hot air in the first cavity; then the sludge exposed in the chute and dried is scraped off by the L-shaped hollow scraper;

[0017] Step 2: water vapor removal operation, removing the water vapor generated when the sludge is dried in the first cavity through the scraping part, the water absorbing part and the storage box;

[0018] Step 3: Secondary dehydration and drying of sludge. Two rollers rotate in opposite directions to squeeze the sludge, transforming it from the original long strip into a sheet, so that it has a larger contact area with the hot air, and the sludge is dehydrated and dried twice;

[0019] Step 4: Residual cleaning operation. When the roller rotates, the side of the roller is constantly in contact with the cleaning rope, and the cleaning rope is used to scrape off the residual sludge on the roller.

[0020] Compared with the prior art, the present invention has the following advantages: First, when the auger of the present invention rotates, the scraper blade is driven to rotate. When the scraper blade rotates to contact the chute, the scraper blade will squeeze the sludge in the conical cylinder out of the chute, so that the sludge is exposed in the chute and is in the first cavity, and the sludge exposed in the chute is dried by the hot air in the first cavity; when the scraping part rotates to contact the chute, the L-shaped hollow scraper will scrape off the sludge exposed in the chute and dried, so that the long strip of sludge falls downward along the lower opening of the cylinder into the external sludge collecting device, thus completing the dehydration and drying operation of the sludge; the problem existing in the prior art that the sludge is squeezed in a gradually reducing volume manner, and the moisture in the sludge can only be effectively squeezed out when the sludge reaches the minimum volume of the screw stacker, which takes a long time as a whole and has low work efficiency; and the moisture content of the sludge in each area is inconsistent, resulting in uneven sludge drying.

[0021] 2. The present invention scrapes the water droplets formed on the outer wall of the conical cylinder by the scraping part, and at the same time, the water absorption part scrapes the water droplets formed on the inner wall of the cylinder, so that the water droplets flow backward along the L-shaped hollow scraper to the storage box, and are discharged to the external drainage equipment through the drainage pipe provided in the storage box. In this way, the drying effect of the sludge in the first cavity can be ensured not to be affected.

[0022] 3. The present invention uses two rollers to rotate towards each other to squeeze the sludge, so that it is transformed from the original long strip into a sheet, so that it has a larger contact area with the hot air; in this way, a better drying effect is achieved for the sludge, and the sludge is dried twice, which greatly reduces the water content of the sludge.

[0023] 4. When the roller of the present invention rotates, the side surface of the roller is constantly in contact with the cleaning rope, and the sludge remaining on the roller is scraped off through the cleaning rope; when the roller rotates, the cleaning rope blocks the toggle plate, making it unable to rotate, and the roller continues to rotate, driving the torsion spring connected between the roller and the toggle plate to deform. When the torsion spring is twisted to the limit and can no longer be deformed, the roller drives the toggle plate to rotate through the torsion spring that can no longer be deformed, so that the toggle plate toggle the cleaning rope to make it vibrate, preventing the sludge from remaining on the cleaning rope and being unable to fall off smoothly, and at the same time releasing the torque accumulated in the torsion spring until the toggle plate is blocked by the cleaning rope again, and the cycle is repeated, so that the sludge cannot remain on the cleaning rope. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the structure disclosed by the sludge dehydration and drying treatment equipment of the present invention;

[0025] Figure 2 A cross-sectional view of the structure disclosed by the sludge dehydration and drying treatment equipment of the present invention;

[0026] Figure 3It is a structural schematic diagram of the primary dehydration and drying treatment mechanism disclosed by the sludge dehydration and drying treatment equipment of the present invention;

[0027] Figure 4 It is a partial structural schematic diagram of the primary dehydration and drying treatment mechanism disclosed by the sludge dehydration and drying treatment equipment of the present invention;

[0028] Figure 5 An exploded view of the conical cylinder, the auger, the first circular ring, the second circular ring, and the L-shaped hollow scraper disclosed in the sludge dewatering and drying treatment equipment of the present invention;

[0029] Figure 6 It is a schematic structural diagram of an L-shaped hollow scraper disclosed in the sludge dehydration and drying treatment equipment of the present invention;

[0030] Figure 7 It is a schematic structural diagram of an L-shaped hollow scraper and a storage box disclosed in the sludge dehydration and drying treatment equipment of the present invention;

[0031] Figure 8 It is a schematic structural diagram of the water vapor removal mechanism and the secondary dehydration and drying mechanism disclosed in the sludge dehydration and drying treatment equipment of the present invention;

[0032] Fig. 9 The sludge dehydration and drying treatment equipment disclosed by the present invention Figure 8 Enlarged view of point A.

[0033] Among them, the above-mentioned drawings include the following figure marks: 1-mounting frame, 2-cylinder, 3-conical cylinder, 4-auger, 5-first motor, 6-first ring, 7-second ring, 8-L-shaped hollow scraper, 9-scraper, 101-second motor, 102-first gear, 103-first gear ring, 201-hot air box, 202-ventilation pipe, 203-storage box, 301-discharge frame, 302-pump, 303-inlet pipe, 304-outlet pipe, 305-roller, 306-second gear, 307-second gear ring, 401-cleaning rope, 402-guide block, 403-dial plate, 001-first cavity, 002-second cavity, 003-third cavity, 004-fourth cavity, 3a-mud inlet, 3b-chute, 8a-mud scraping part, 8b-water scraping part, 8c-water absorption part. DETAILED DESCRIPTION

[0034] First of all, it should be pointed out that in the different described embodiments, the same parts are provided with the same reference numerals or the same component names, wherein the disclosure contained in the entire description can be transferred to the same parts with the same reference numerals or the same component names. Selected positional descriptions in the description, such as top, bottom, lateral, etc., also refer to the directly described and shown figures and are transferred to the new positions in the case of a change in position.

[0035] Example 1

[0036] A sludge dewatering and drying treatment equipment, such as Figure 1-7 As shown, it includes a mounting frame 1 and a cylinder 2; the mounting frame 1 is bolted to the cylinder 2, and the cylinder 2 is set to have an open left end and a closed right end structure, and a feed opening is set at the lower part of the cylinder 2;

[0037] It also includes a conical cylinder 3, a screw dragon 4, a first motor 5, a first ring 6, a second ring 7, an L-shaped hollow scraper 8, a scraper 9 and a power unit; the mounting frame 1 is fixedly connected to the conical cylinder 3, and the conical cylinder 3 is partially located inside the cylinder 2, and a first cavity 001 is formed between the cylinder 2 and the conical cylinder 3; the conical cylinder 3 is provided with a mud inlet 3a, and the mud inlet 3a is located outside the cylinder 2, and sludge is injected into the left part of the conical cylinder 3 through the mud inlet 3a; the conical cylinder 3 is provided with a plurality of inclined grooves 3b groups distributed along the inclined curve array of the conical cylinder 3, and each inclined groove 3b group is divided into three circular arrays with the center point of the conical cylinder 3 The conical cylinder 3 is composed of an inclined groove 3b, and the inclined groove 3b penetrates the outer wall of the cylinder 2, and the cross-section of the inclined groove 3b is rectangular; the conical cylinder 3 is rotatably connected to the auger 4, and the outer edge of the auger 4 is in contact with the inner wall of the conical cylinder 3, and the sludge in the conical cylinder 3 is transported from left to rear through the auger 4; each conveying part of the auger 4 is fixedly connected to a scraper 9, and the sludge in the conical cylinder 3 is squeezed out of the inclined groove 3b through the scraper 9 and is in a long strip shape; a first motor 5 is installed at the left end of the conical cylinder 3, and the output shaft of the first motor 5 is fixedly connected to the auger 4; the left part of the cylinder 2 is rotatably connected to the first ring 6; the right part of the cylinder 2 is rotatably connected to the second ring 7, and the first motor 5 is fixedly connected to the output shaft of the first motor 5; The second ring 7 is rotatably connected to the right part of the conical cylinder 3; the second ring 7 and the inner right wall of the cylinder 2 jointly form a second cavity 002; the first ring 6 and the second ring 7 are jointly fixed with an L-shaped hollow scraper 8, and the lower part of the L-shaped hollow scraper 8 is in contact with the outer wall of the conical cylinder 3, and the upper part of the L-shaped hollow scraper 8 is in contact with the inner wall of the cylinder 2; the L-shaped hollow scraper 8 is provided with a plurality of scraping parts 8a distributed along the inclined curve array of the L-shaped hollow scraper 8, and the position of the scraping part 8a corresponds to the position of the inclined groove 3b group, and the scraping part 8a is used to scrape off the dried sludge exposed at the inclined groove 3b; the mounting frame 1 is equipped with a movable The power unit is fixedly connected to the first ring 6, and the power unit is used to drive the first ring 6 to rotate; the sludge in the conical cylinder 3 is intermittently squeezed out from the chute 3b by the scraper 9, so that the sludge is exposed in the chute 3b and is in the first cavity 001, and the sludge exposed in the chute 3b is dried by the hot air in the first cavity 001; when the scraping part 8a rotates to contact the chute 3b, the L-shaped hollow scraper 8 will scrape off the sludge exposed in the chute 3b and dried, so that the long strip of sludge falls downward along the lower opening of the cylinder 2 into the external sludge collecting device.

[0038] The power unit includes a second motor 101, a first gear 102, and a first gear ring 103; the second motor 101 is installed on the mounting frame 1; the first gear 102 is fixedly connected to the output shaft of the second motor 101; the first gear ring 103 is fixedly connected to the left side of the first ring 6, and the first gear ring 103 is meshed with the first gear 102.

[0039] The sludge dehydration and drying treatment process of the present invention is specifically as follows:

[0040] Prior to this, the external heating device is controlled to introduce hot air into the first cavity 001, so that the first cavity 001 is filled with high-temperature hot air for drying;

[0041] Then, the sludge to be dehydrated and dried is injected into the inner left part of the conical cylinder 3 from the sludge inlet 3a, and then the auger 4 is used to transport the sludge from left to right;

[0042] During this process, the rotation of the auger 4 drives the scraper 9 to rotate. When the scraper 9 rotates to contact the chute 3b, the scraper 9 squeezes the sludge in the conical cylinder 3 out of the chute 3b, so that the sludge is exposed in the chute 3b and is in the first cavity 001. The hot air in the first cavity 001 dries the sludge exposed in the chute 3b.

[0043] Subsequently, the output shaft of the second motor 101 is controlled to drive the first gear 102 to rotate, so that the first gear 102 drives the first gear ring 103 to rotate, and the first gear ring 103 drives the first ring 6, the second ring 7 and the L-shaped hollow scraper 8 to rotate clockwise from left to right. When the scraping portion 8a rotates to contact the inclined groove 3b, the L-shaped hollow scraper 8 will scrape off the dried sludge exposed in the inclined groove 3b, so that the long strips of sludge fall downward along the lower opening of the cylinder 2 into the external sludge collection equipment, thereby completing the sludge dehydration and drying operation.

[0044] After the first layer of sludge squeezed out by the scraper 9 is scraped off, the scraper 9 squeezes out the sludge in the conical cylinder 3 from the chute 3b again, and after drying, it is scraped off by the L-shaped hollow scraper 8; in this way, the sludge in the conical cylinder 3 is intermittently squeezed out from the chute 3b by the scraper 9, so that the sludge is dried layer by layer to achieve a uniform drying effect; the problem existing in the prior art that the sludge is squeezed in a gradually reducing volume manner, and the moisture in the sludge can only be effectively squeezed out when the sludge reaches the minimum volume of the screw stacker, which takes a long time as a whole and has low work efficiency; and the moisture content of the sludge in each area is inconsistent, resulting in uneven sludge drying.

[0045] During this drying process, the sludge in the chute 3b is separated from the sludge exposed in the chute 3b and the sludge in the conical cylinder 3, so that only the sludge exposed in the chute 3b is dried, avoiding the problem that the sludge in the conical cylinder 3 is dried in advance and becomes inconvenient to squeeze out.

[0046] Example 2

[0047] On the basis of Example 1, Figure 7-8 As shown, the L-shaped hollow scraper 8 is provided with a plurality of wiper portions 8b distributed in an inclined curve array along the L-shaped hollow scraper 8, and the wiper portions 8b and the mud scraper portions 8a are alternately arranged, and the wiper portions 8b are in contact with the outer wall of the conical cylinder 3; the water droplets formed on the outer wall of the conical cylinder 3 are scraped off by the wiper portions 8b.

[0048] It also includes a water vapor removal mechanism; the water vapor removal mechanism includes a hot air box 201 and a ventilation pipe 202; the hot air box 201 is installed on the right side of the cylinder 2; the hot air box 201 is provided with a ventilation pipe 202, and the ventilation pipe 202 passes through the second ring 7 and is connected to the first cavity 001, and hot air is transported to the first cavity 001 through the hot air box 201 and the ventilation pipe 202, so that the first cavity 001 is filled with hot air for drying, and the sludge in the first cavity 001 is dried by the hot air.

[0049] The L-shaped hollow scraper 8 is provided with a water absorbing portion 8c, and the water absorbing portion 8c is in contact with the inner wall of the cylinder 2; the water drops formed on the inner wall of the cylinder 2 are scraped and absorbed by the water scraping portion 8b.

[0050] The water vapor removal mechanism also includes a storage box 203; the first ring 6 and the second ring 7 are jointly fixed with the storage box 203, and the storage box 203 is connected to the rear of the L-shaped hollow scraper 8; the storage box 203 is provided with a drain pipe, and the drain pipe passes through the second ring 7 and is connected to an external drainage device; the water droplets scraped off by the wiper part 8b and the water absorption part 8c are collected and discharged through the storage box 203.

[0051] The water vapor removal work of the present invention is specifically as follows:

[0052] The present invention delivers hot air to the first cavity 001 through the hot air box 201 and the ventilation pipe 202, so that the first cavity 001 is filled with hot air for drying, and the sludge in the first cavity 001 is dried by the hot air;

[0053] During the process of drying the sludge, the moisture in the sludge evaporates quickly and contacts the inner wall of the cylinder 2 and the outer wall of the conical cylinder 3, forming water droplets on the inner wall of the cylinder 2 and the outer wall of the conical cylinder 3; after a long period of drying operation, more and more water droplets are formed on the inner wall of the cylinder 2 and the outer wall of the conical cylinder 3, resulting in the first cavity 001 being in a relatively moist state, thus greatly reducing the drying effect of the sludge in the first cavity 001; when the L-shaped hollow scraper 8 scrapes off the dried sludge exposed in the inclined groove 3b, the present invention scrapes the water droplets formed on the outer wall of the conical cylinder 3 by the scraping part 8b, and at the same time, the water absorption part 8c scrapes the water droplets formed on the inner wall of the cylinder 2, so that the water droplets flow backward along the L-shaped hollow scraper 8 to the storage box 203, and are discharged to the external drainage equipment through the drainage pipe provided in the storage box 203, thus ensuring that the drying effect of the sludge in the first cavity 001 is not affected.

[0054] Example 3

[0055] On the basis of Example 2, Figure 2 , Figure 8-Figure 9 As shown, it also includes a secondary dehydration and drying mechanism; a discharge frame 301, a pump 302, an air inlet pipe 303 and an air outlet pipe 304; the mounting frame 1 and the cylinder 2 are fixedly connected with the discharge frame 301, and the upper part of the discharge frame 301 is connected with the lower part of the cylinder 2; the discharge frame 301 is provided with a third cavity 003 and a fourth cavity 004; the third cavity 003 is installed with a pump 302; the pump 302 is connected with the air inlet pipe 303, and the air inlet pipe 303 is connected with the second cavity 002; the pump 302 is connected with the air outlet pipe 304, and the air outlet pipe 304 is connected with the fourth cavity 004; the hot air in the third cavity 003 is transported to the fourth cavity 004 through the pump 302, the air inlet pipe 303 and the air outlet pipe 304, so that the fourth cavity 004 is filled with hot air for drying.

[0056] The secondary dehydration and drying mechanism also includes a roller 305, a second gear 306 and a second gear ring 307; the fourth cavity 004 is rotatably connected to two rollers 305 distributed front and back; the left end of each of the two rollers 305 is fixedly connected to a second gear ring 307, and the rear second gear ring 307 is meshed with the first gear 102; the left side of the discharge frame 301 is rotatably connected to the second gear 306 through a rotating shaft, and the second gear 306 is meshed with the first gear 102, and the second gear 306 is meshed with the front second gear ring 307; the rotation of the second gear ring 307 drives the roller 305 to rotate.

[0057] The secondary drying process of the present invention is as follows:

[0058] Prior to this, the hot air in the second cavity 002 is extracted through the pump 302 and the air inlet pipe 303, and sent to the fourth cavity 004 through the air outlet pipe 304, so that the fourth cavity 004 is filled with dry hot air, and the sludge passing through the fourth cavity 004 is dried by this part of hot air;

[0059] The dried sludge in the form of long strips falls downward from the lower opening of the cylinder 2 into the discharge frame 301 and is located between the two rollers 305; when the first gear 102 rotates, it drives the second gear 306 and the second gear ring 307 at the rear to rotate, and the rotation of the second gear 306 drives the second gear ring 307 at the front to rotate, so that the two second gear rings 307 rotate in opposite directions. In this way, the two second gear rings 307 drive the two rollers 305 to rotate in opposite directions, squeezing the sludge, transforming it from the original long strips into sheets, so that it has a larger contact area with the hot air; in this way, a better drying effect is achieved for the sludge, and the sludge is dehydrated and dried twice, which greatly reduces the water content of the sludge.

[0060] Example 4

[0061] On the basis of Example 3, Figure 8-Figure 9 As shown, it also includes a residual scraping unit; the residual scraping unit includes a cleaning rope 401; the fourth cavity 004 is provided with two cleaning ropes 401 symmetrically distributed front and back, and the front cleaning rope 401 is located on the front side of the front roller 305, and the rear cleaning rope 401 is located on the rear side of the rear roller 305, and the two cleaning ropes 401 are respectively contacted and connected with the rollers 305 on the corresponding sides, and the residual sludge on the rollers 305 is scraped by the cleaning ropes 401.

[0062] The residual scraping unit also includes a guide block 402 and a toggle plate 403; the inner left wall and the inner right wall of the fourth cavity 004 are each equipped with two guide blocks 402 distributed front and back; the two front guide blocks 402 are commonly connected to the front cleaning rope 401, and the two rear guide blocks 402 are commonly connected to the rear cleaning rope 401; the cleaning rope 401 is adjusted into a "U" shape through the guide block 402, so that the cleaning rope 401 is closer to the roller 305; the left and right ends of the roller 305 are each connected to a toggle plate 403 through a torsion spring, and all the toggle plates 403 are commonly connected to the discharge frame 301 for rotation.

[0063] The residual scraping work of the present invention is specifically as follows:

[0064] When the roller 305 rotates, the side of the roller 305 is constantly in contact with the cleaning rope 401, and the cleaning rope 401 is used to scrape off the residual sludge on the roller 305, that is, the scraping work of the residual sludge on the roller 305 is completed, so that the normal work of the roller 305 is not affected.

[0065] When the roller 305 rotates, the cleaning rope 401 blocks the toggle plate 403 and prevents it from rotating. The roller 305 continues to rotate, causing the torsion spring connected between the roller 305 and the toggle plate 403 to deform. When the torsion spring is twisted to the limit and can no longer be deformed, the roller 305 drives the toggle plate 403 to rotate through the torsion spring that can no longer be deformed, so that the toggle plate 403 toggle the cleaning rope 401 to make it vibrate, preventing sludge from remaining on the cleaning rope 401 and being unable to fall off smoothly, and at the same time releasing the torque accumulated in the torsion spring until the toggle plate 403 is blocked by the cleaning rope 401 again, and the cycle is repeated, so that sludge cannot remain on the cleaning rope 401.

[0066] A sludge dehydration and drying treatment method, specifically comprising the following steps:

[0067] Step 1: Sludge dehydration and drying operation, the sludge in the conical cylinder 3 is intermittently squeezed out from the chute 3b by the scraper 9, and the sludge exposed in the chute 3b is dried by the hot air in the first cavity 001; then the sludge exposed in the chute 3b and dried is scraped off by the L-shaped hollow scraper 8;

[0068] Step 2: water vapor removal operation, the water vapor generated when the sludge is dried in the first cavity 001 is removed by the water scraping part 8b, the water absorbing part 8c and the storage box 203;

[0069] Step 3: Secondary dehydration and drying of the sludge. The two rollers 305 rotate in opposite directions to squeeze the sludge, so that it changes from the original long strip to a sheet, so that it has a larger contact area with the hot air, and the sludge is dehydrated and dried twice.

[0070] Step 4: Residue cleaning operation. When the roller 305 rotates, the side of the roller 305 is constantly in contact with the cleaning rope 401 , and the cleaning rope 401 is used to scrape off the residual sludge on the roller 305 .

[0071] Those skilled in the art should understand that the above embodiments do not limit the present invention in any form, and any technical solutions obtained by equivalent replacement or equivalent transformation shall fall within the protection scope of the present invention.

Claims

1. A sludge dehydration and drying treatment device, comprising a mounting frame (1) and a cylinder (2); the mounting frame (1) is mounted with the cylinder (2); the characteristics are: It also comprises a conical cylinder (3), an auger (4), a first motor (5), a first circular ring (6), a second circular ring (7), an L-shaped hollow scraper (8), a scraper blade (9) and a power unit; the mounting frame (1) is fixedly connected to the conical cylinder (3), and the conical cylinder (3) is partially located inside the cylinder (2), and a first cavity (001) is formed between the cylinder (2) and the conical cylinder (3); the conical cylinder (3) is provided with a mud inlet (3a); the conical cylinder (3) is provided with a plurality of inclined groove groups, and each inclined groove group is composed of three inclined grooves; the conical cylinder (3) is rotatably connected to the auger (4), and the outer edge of the auger (4) is in contact with the inner wall of the conical cylinder (3); the conveying portion of the auger (4) is fixedly connected to the scraper blade (9); the conical cylinder (3) is installed with the first motor (5), and the output shaft of the first motor (5) is fixedly connected to the auger (4); A first circular ring (6) is rotatably connected inside the cylinder (2); a second circular ring (7) is rotatably connected inside the cylinder (2), and the second circular ring (7) is rotatably connected to the right part of the conical cylinder (3); the second circular ring (7) and the inner right wall of the cylinder (2) together form a second cavity (002); an L-shaped hollow scraper (8) is fixedly connected to the first circular ring (6) and the second circular ring (7), and the lower part of the L-shaped hollow scraper (8) is in contact with the outer wall of the conical cylinder (3), and the upper part of the L-shaped hollow scraper (8) is in contact with the inner wall of the cylinder (2); the L-shaped hollow scraper (8) is provided with a plurality of scraping parts (8a), and the positions of the scraping parts (8a) correspond to the positions of the chute groups; a power unit is installed on the mounting frame (1), and the power unit is fixedly connected to the first circular ring (6), and the power unit is used to drive the first circular ring (6) to rotate; Each chute group consists of three chute arrays distributed in a circular array around the center point of the conical cylinder (3).

2. The sludge dehydration and drying treatment equipment according to claim 1, characterized in that: The L-shaped hollow scraper (8) is provided with a plurality of water scraping portions (8b) distributed in an array along an inclined curve of the L-shaped hollow scraper (8), the water scraping portions (8b) and the mud scraping portions (8a) are arranged alternately, and the water scraping portions (8b) are in contact with the outer wall of the conical cylinder (3).

3. The sludge dehydration and drying treatment equipment according to claim 1, characterized in that: It also includes a water vapor removal mechanism; the water vapor removal mechanism includes a hot air box (201) and a ventilation pipe (202); the hot air box (201) is installed inside the cylinder (2); the hot air box (201) is provided with a ventilation pipe (202), and the ventilation pipe (202) passes through the second ring (7) and is connected to the first cavity (001).

4. The sludge dehydration and drying treatment equipment according to claim 2, characterized in that: The L-shaped hollow scraper (8) is provided with a water absorbing portion (8c), and the water absorbing portion (8c) is in contact with the inner wall of the cylinder (2).

5. The sludge dehydration and drying treatment equipment according to claim 3 is characterized by: The water vapor removal mechanism also includes a storage box (203); the first circular ring (6) and the second circular ring (7) are jointly fixedly connected with the storage box (203), and the storage box (203) is connected to the rear of the L-shaped hollow scraper (8); the storage box (203) is provided with a drainage pipe, and the drainage pipe passes through the second circular ring (7) and is connected to an external drainage device.

6. The sludge dehydration and drying treatment equipment according to claim 1, characterized in that: The invention also comprises a secondary dehydration and drying mechanism; the secondary dehydration and drying mechanism comprises a discharge frame (301), a pump (302), an air inlet pipe (303) and an air outlet pipe (304); the mounting frame (1) and the cylinder (2) are fixedly connected with the discharge frame (301), and the upper part of the discharge frame (301) is connected with the lower part of the cylinder (2); the discharge frame (301) is provided with a third cavity (003) and a fourth cavity (004); the third cavity (003) is installed with a pump (302); the pump (302) is connected with the air inlet pipe (303), and the air inlet pipe (303) is connected with the second cavity (002); the pump (302) is connected with the air outlet pipe (304), and the air outlet pipe (304) is connected with the fourth cavity (004).

7. The sludge dehydration and drying treatment equipment according to claim 6, characterized in that: The secondary dehydration and drying mechanism further comprises a roller (305), a second gear (306) and a second gear ring (307); the fourth cavity (004) is rotatably connected to the two rollers (305); the two rollers (305) are each fixedly connected to a second gear ring (307), and the rear second gear ring (307) is meshed with the first gear (102); the discharge frame (301) is rotatably connected to the second gear (306) via a rotating shaft, and the second gear (306) is meshed with the first gear (102), and the second gear (306) is meshed with the front second gear ring (307).

8. The sludge dehydration and drying treatment equipment according to claim 7, characterized in that: It also includes a residue scraping unit; the residue scraping unit includes a cleaning rope (401); the fourth cavity (004) is provided with two cleaning ropes (401), and the front cleaning rope (401) is located on the front side of the front rotating roller (305), and the rear cleaning rope (401) is located on the rear side of the rear rotating roller (305), and the two cleaning ropes (401) are respectively in contact with and connected to the rotating rollers (305) on the corresponding sides.

9. The sludge dehydration and drying treatment equipment according to claim 8, characterized in that: The residue scraping unit further comprises a guide block (402) and a toggle plate (403); the inner left wall and the inner right wall of the fourth cavity (004) are each installed with two guide blocks (402) distributed front and back; the two front guide blocks (402) are jointly in contact with and connected to the front cleaning rope (401), and the two rear guide blocks (402) are jointly in contact with and connected to the rear cleaning rope (401); the left end and the right end of the rotating roller (305) are each connected to a toggle plate (403) via a torsion spring, and all the toggle plates (403) are jointly rotatably connected to the discharge frame (301).

10. A sludge dehydration and drying treatment method, applicable to the sludge dehydration and drying treatment equipment according to claim 9, characterized in that: The specific steps are as follows: Step 1: Sludge dehydration and drying operation, the sludge in the conical cylinder (3) is intermittently squeezed out from the chute (3b) by a scraper (9), and the sludge exposed in the chute (3b) is dried by hot air in the first cavity (001); then the sludge exposed in the chute (3b) and dried is scraped off by an L-shaped hollow scraper (8); Step 2: a water vapor removal operation, in which the water vapor generated when the sludge is dried in the first cavity (001) is removed through the water scraping portion (8b), the water absorbing portion (8c) and the storage box (203); Step 3: secondary dehydration and drying of the sludge, wherein the two rollers (305) rotate in opposite directions to squeeze the sludge, so that the sludge is transformed from the original long strip into a sheet, so that the sludge has a larger contact area with the hot air, and the sludge is dehydrated and dried twice; Step 4: Residue cleaning operation: when the roller (305) rotates, the side surface of the roller (305) is constantly in contact with the cleaning rope (401), and the residual sludge on the roller (305) is scraped off by the cleaning rope (401).

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