Sludge drying reduction device

Abstract

The utility model relates to the technical field of sludge drying, in particular to a sludge drying reduction device which comprises a drying cylinder, a driving assembly for continuously turning and stirring sludge is arranged at the right end of the drying cylinder, and a purification assembly for discharging and filtering internally heated tail gas is arranged at the top of the left end of the drying cylinder. An air blowing assembly used for internal ventilation is arranged above the right end of the drying cylinder, and a first heating rod is arranged in the heating cabin; according to the sludge drying reduction device, the inclined drying cylinder is arranged, the interior of the drying cylinder is preliminarily heated under the cooperation of a first heating rod, sludge adding is facilitated under the cooperation of a feeding hopper, under the cooperation of a ventilation box and a fan, a second heating rod is started to heat air conveyed into the interior, and drying of the internal sludge is accelerated through hot air; the main shaft rotates to realize synchronous rotation of the main shaft and the fan under the cooperation of the toothed belt, the master-slave fluted disc and the driven fluted disc, and activated carbon filter cotton is matched in the filter box to filter and intercept discharged air, so that particulate matters are prevented from being discharged to pollute the surroundings.

Description

Technical Field

[0001] This utility model relates to the field of sludge drying technology, specifically a sludge drying and volume reduction device. Background Technology

[0002] Sludge is a byproduct of wastewater treatment. It is a solid, semi-solid, and liquid waste. Direct discharge of sludge causes significant pollution. Furthermore, its semi-solid state and heavy weight make it inconvenient to transport and discharge. Therefore, it needs to be dried and reduced in volume.

[0003] The utility model CN219792788U discloses a drying cylinder, wherein a purification box is provided on one side of the drying cylinder, a screen is provided between the purification box and the drying cylinder, an exhaust fan is provided inside the purification box near the drying cylinder, an exhaust fan is provided at the upper end of the purification box, a plate frame is provided between the exhaust fan and the exhaust fan, a filter screen is provided on the plate frame, and a notch is provided on the purification box to cooperate with the plate frame.

[0004] The above-mentioned technical solution dries the sludge in a drying drum. The sludge is moved by an auger, which accelerates the drying process. The gas generated during drying enters the purification chamber through a screen, is filtered by a filter screen, and is finally discharged through an exhaust fan. When the filter screen needs to be cleaned or replaced, the rotating wheel moves the base upward, lifting the plate frame to be flush with the notch, and the plate frame can be removed from the notch, which facilitates the cleaning or replacement of the filter screen and ensures the filtration effect of the filter screen during long-term use. However, hot air cannot be continuously introduced into the drying drum. Hot air accelerates the drying of the sludge, which is not conducive to shortening the drying time, and the dried sludge is not convenient to collect and discharge in a centralized manner. Summary of the Invention

[0005] The purpose of this invention is to provide a sludge drying and volume reduction device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A sludge drying and volume reduction device includes a drying cylinder with support columns at both ends. A drive assembly for continuous sludge stirring is provided at the right end of the drying cylinder. A purification assembly for filtering exhaust gas after internal heating is provided at the top left end of the drying cylinder. A blower assembly for internal ventilation is provided above the right end of the drying cylinder. A hollow area is provided between the inner and outer walls of the drying cylinder, which is a heating chamber. A first heating rod is provided in the heating chamber.

[0008] The drive assembly includes a motor and a main shaft coaxially connected to the motor output shaft. The main shaft extends into the drying cylinder, and an auger blade is provided on the outer wall of the main shaft. Several scrapers are provided on the auger blade, and the bottom of the scrapers and the outer wall of the auger blade are in close contact with the inner wall of the drying cylinder.

[0009] The purification assembly includes a filter box and activated carbon filter cotton inserted inside the filter box. The top of the filter box has a storage compartment, which is connected to the inside of the drying cylinder through a connection hole. The top of the filter box has a sealing cover, and the top of the sealing cover has an exhaust pipe that communicates with the inside of the storage compartment.

[0010] The blower assembly includes a ventilation box and a fan mounted on a fixed frame inside the ventilation box. The fan's shaft has a driven gear at its end. The top of the ventilation box has a slot with a frame plate inside. The frame plate has several second heating rods inside.

[0011] Furthermore, the top of the support column is welded and fixed to the end of the drying cylinder, the drying cylinder is inclined, the left end of the drying cylinder is higher than the right end, an observation window is provided in the middle of the outer wall of the drying cylinder, and the first heating rod is fixedly connected to the heating chamber by screws.

[0012] In this invention, the drying cylinder is tilted, which helps the dried sludge to be discharged from the bottom right end under the action of gravity and with the cooperation of the drive component. The observation window is made of tempered glass and is glued and fixed to the drying cylinder around the perimeter, allowing real-time observation of the drying status of the sludge inside.

[0013] Specifically, a feeding hopper is provided on the upper middle part of the outer wall of the drying cylinder, and the inside of the feeding hopper is connected to the inside of the drying cylinder. A top cover is provided on the top of the feeding hopper, and a discharge pipe is provided on the lower right end of the outer wall of the drying cylinder. A sealing bolt is provided at the bottom of the discharge pipe.

[0014] In this invention, the feeding hopper facilitates the addition of dried sludge, and the top cover is plugged into the feeding hopper to prevent internal air from escaping through the feeding hopper during internal ventilation, thus avoiding interference with the filtration of the escaping air. The opening of the sealing bolts on the discharge pipe facilitates the discharge and centralized collection of the dried sludge. During drying, the sealing bolts are threadedly connected to the discharge pipe to increase internal sealing.

[0015] It should be noted that the motor is fixedly connected to the right end of the drying cylinder by screws, the output shaft of the motor is connected to the main shaft by a coupling, the output shaft of the motor is also provided with a drive gear plate, and a toothed belt is provided between the drive gear plate and the driven gear plate.

[0016] In this invention, the motor is electrically connected to an external power source via a wire. When the control switch is activated, the output shaft drives the main shaft to rotate. One end of the toothed belt meshes with the driving toothed disc, and the other end meshes with the driven toothed disc. The rotation of the main shaft drives the rotating shaft on the fan to rotate in coordination.

[0017] Furthermore, the main shaft is rotatably connected to the drying cylinder, the two ends of the auger blade are welded and fixed to the main shaft through connecting plates, the scrapers are distributed in a ring at equal intervals, and the scrapers are welded and fixed to the auger blade.

[0018] In this invention, the sludge adhering to the inner wall of the drying cylinder is scraped by the scraper blades. With the rotation of the auger blades, the sludge inside is turned over and guided to the bottom. While the sludge is continuously turned over, it is convenient to collect and discharge the sludge from the bottom.

[0019] Furthermore, the bottom of the ventilation box is fixedly connected to the drying cylinder by screws, the fan is rotatably connected to the fixing frame by a rotating shaft, the second heating rods are evenly distributed, and the second heating rods are fixedly connected to the frame plate by screws, and a protective net is also provided at the right end of the ventilation box.

[0020] In this invention, the second heating rod is connected to an external power source via a wire. When the control switch is activated, the second heating rod heats up the air drawn into the drying cylinder, increasing the temperature of the air. The hot air accelerates the drying of the sludge inside. With the help of the protective net, impurities in the air entering the cylinder are intercepted, reducing damage to the second heating rod and the fan.

[0021] It is worth noting that the bottom of the filter box is fixedly connected to the drying cylinder by screws, the width of the inner wall of the storage chamber is adapted to the width of the outer wall of the activated carbon filter cotton, the width of the outer wall of the sealing cover is adapted to the width of the outer wall of the filter box, a rubber pad is provided at the bottom of the sealing cover, the width of the outer wall of the rubber pad is adapted to the width of the inner wall of the storage chamber, the sealing cover is fixedly connected to the filter box by screws, and the bottom of the exhaust pipe is bonded and fixed to the sealing cover.

[0022] In this invention, the sealing cover is tightly fitted and fixed to the filter box by a rubber gasket, and the installation stability is increased with the help of screws. The activated carbon filter cotton filters and intercepts the air discharged from the inside of the drying cylinder, reducing the discharge of particulate matter and the pollution impact on the surrounding environment. The exhaust pipe guides the internal air out.

[0023] Compared with the prior art, the beneficial effects of this utility model are:

[0024] 1. This utility model features an inclined drying cylinder with a first heating rod for initial heating of the interior. A hopper facilitates sludge addition, and a second heating rod, activated by a ventilation box and fan, heats the air supplied to the interior. This hot air accelerates the drying of the sludge and removes moisture. A motor in the drive assembly provides power, and the main shaft rotates synchronously with the fan via a toothed belt, master-slave gear disc, and driven gear disc. Activated carbon filter cotton in the filter box filters and intercepts the exhaust air, preventing particulate matter from polluting the surrounding environment. The drying process reduces moisture content and sludge weight, achieving volume reduction.

[0025] This invention, with the addition of an observation window, facilitates real-time monitoring of the internal sludge drying status. The top cover seals the top of the feed hopper, reducing the amount of internal air escaping from the hopper. With the addition of the discharge pipe, the sealing bolts can be removed, facilitating the discharge of the dried sludge. The combination of the auger blades and scraper helps to agitate and dry the internal sludge, reducing the impact of sludge adhesion to the inner wall of the drying cylinder. The protective net further reduces the amount of lint and dust carried by the air entering the cylinder, minimizing damage to the second heating rod and fan. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0027] Figure 2 This is a schematic diagram of the exploded structure of the purification component of this utility model;

[0028] Figure 3 This is a schematic diagram of the drying cylinder structure of this utility model;

[0029] Figure 4 This is a schematic diagram of the blower assembly structure of this utility model;

[0030] Figure 5 This is a schematic diagram of the drive component structure of this utility model;

[0031] Figure 6 This is a schematic diagram of the overall cross-sectional structure of this utility model.

[0032] The meanings of the labels in the diagram are as follows:

[0033] 1. Drying drum; 10. Support column; 11. Observation window; 12. Feed hopper; 120. Top cover; 13. First heating rod; 14. Discharge pipe; 140. Sealing bolt; 15. Heating chamber;

[0034] 2. Drive assembly; 20. Motor; 200. Drive gear; 21. Main shaft; 210. Screwdriver blade; 211. Scraper;

[0035] 3. Blower assembly; 30. Ventilation box; 300. Slot; 301. Fan; 302. Driven gear plate; 31. Frame plate; 310. Second heating rod; 32. Protective net; 33. Toothed belt;

[0036] 4. Purification components; 40. Filter box; 400. Storage compartment; 41. Activated carbon filter cotton; 42. Sealing cover; 420. Rubber gasket; 421. Exhaust pipe. Detailed Implementation

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0038] Please see Figures 1-6 This embodiment provides a technical solution:

[0039] A sludge drying and volume reduction device includes a drying cylinder 1, with support columns 10 at both ends of the drying cylinder 1. The top of the support columns 10 is welded and fixed to the corresponding end of the drying cylinder 1. The drying cylinder 1 is inclined, with the left end of the drying cylinder 1 being higher than the right end. An observation window 11 is provided in the middle of the outer wall of the drying cylinder 1. A first heating rod 13 is fixedly connected to the heating chamber 15 by screws.

[0040] In this invention, the drying cylinder 1 is inclined, which helps the dried sludge to be discharged from the bottom right end under the action of gravity and with the cooperation of the drive component 2. The observation window 11 is made of tempered glass and is glued and fixed to the drying cylinder 1 around the perimeter, so that the drying status of the sludge inside can be observed in real time through the observation window 11.

[0041] Furthermore, a feed hopper 12 is provided on the upper middle part of the outer wall of the drying cylinder 1. The inside of the feed hopper 12 is connected to the inside of the drying cylinder 1. A top cover 120 is provided on the top of the feed hopper 12. A discharge pipe 14 is provided on the lower right end of the outer wall of the drying cylinder 1. A sealing bolt 140 is provided at the bottom of the discharge pipe 14.

[0042] In this invention, the feeding hopper 12 facilitates the addition of dried sludge, and the top cover 120 is inserted into the feeding hopper 12, which helps to prevent internal air from being discharged from the feeding hopper 12 during internal ventilation, thus affecting the filtration of the discharged air. The sealing bolt 140 on the discharge pipe 14 is opened to facilitate the discharge and centralized collection of the dried sludge. During drying, the sealing bolt 140 is threadedly connected to the discharge pipe 14 to increase internal sealing.

[0043] Specifically, the right end of the drying cylinder 1 is provided with a drive assembly 2 for continuous sludge stirring. The drive assembly 2 includes a motor 20 and a main shaft 21 coaxially connected to the output shaft of the motor 20. The main shaft 21 extends into the interior of the drying cylinder 1, and an auger blade 210 is provided on the outer wall of the main shaft 21. Several scrapers 211 are provided on the auger blade 210. The bottom of the scraper 211 and the outer wall of the auger blade 210 are close to the inner wall of the drying cylinder 1.

[0044] It should be noted that the motor 20 is fixedly connected to the right end of the drying cylinder 1 by screws, the output shaft of the motor 20 is connected to the main shaft 21 by a coupling, the output shaft of the motor 20 is also provided with a drive gear 200, and a toothed belt 33 is provided between the drive gear 200 and the driven gear 302.

[0045] In this utility model, the motor 20 is electrically connected to an external power source through a wire. When the control switch is activated, the output shaft drives the main shaft 21 to rotate. One end of the toothed belt 33 meshes with the driving toothed disc 200, and the other end meshes with the driven toothed disc 302. The rotation of the main shaft 21 drives the rotating shaft on the fan 301 to rotate.

[0046] Furthermore, the main shaft 21 is rotatably connected to the drying cylinder 1, and the two ends of the auger blade 210 are welded and fixed to the main shaft 21 through connecting plates. The scraper blades 211 are distributed in a ring at equal intervals and are welded and fixed to the auger blades 210.

[0047] In this invention, the scraper 211 scrapes the sludge adhering to the inner wall of the drying cylinder 1. With the rotation of the auger blade 210, the sludge inside is turned over and guided to the bottom. While the sludge is continuously turned over, it is convenient to collect the sludge and discharge it from the bottom.

[0048] It is worth adding that a purification component 4 for filtering the exhaust gas after internal heating is provided at the top left end of the drying cylinder 1. The purification component 4 includes a filter box 40 and an activated carbon filter cotton 41 inserted inside the filter box 40. A storage compartment 400 is opened at the top of the filter box 40. The storage compartment 400 is connected to the inside of the drying cylinder 1 through a connecting hole. A sealing cover 42 is provided at the top of the filter box 40. An exhaust pipe 421 connected to the inside of the storage compartment 400 is provided at the top of the sealing cover 42.

[0049] Furthermore, the bottom of the filter box 40 is fixedly connected to the drying cylinder 1 by screws. The width of the inner wall of the storage chamber 400 is adapted to the width of the outer wall of the activated carbon filter cotton 41. The width of the outer wall of the sealing cover 42 is adapted to the width of the outer wall of the filter box 40. A rubber pad 420 is provided at the bottom of the sealing cover 42. The width of the outer wall of the rubber pad 420 is adapted to the width of the inner wall of the storage chamber 400. The sealing cover 42 is fixedly connected to the filter box 40 by screws. The bottom of the exhaust pipe 421 is bonded and fixed to the sealing cover 42.

[0050] In this utility model, the sealing cover 42 is tightly fitted and fixed to the filter box 40 by the rubber gasket 420, and the installation stability is increased with the help of screws. The activated carbon filter cotton 41 filters and intercepts the air discharged from the inside of the drying cylinder 1, reducing the discharge of particulate matter and the pollution impact on the surrounding environment. The exhaust pipe 421 guides the internal air to be discharged.

[0051] Specifically, a blower assembly 3 for internal ventilation is provided at the upper right end of the drying cylinder 1. The blower assembly 3 includes a ventilation box 30 and a fan 301 installed on the fixing frame inside the ventilation box 30. The end of the rotating shaft of the fan 301 is provided with a driven gear 302. A slot 300 is opened at the top of the ventilation box 30. A frame plate 31 is provided in the slot 300. Several second heating rods 310 are provided in the frame plate 31.

[0052] Secondly, the bottom of the ventilation box 30 is fixedly connected to the drying cylinder 1 by screws, the fan 301 is rotatably connected to the fixed frame by a rotating shaft, the second heating rods 310 are evenly distributed, and the second heating rods 310 are fixedly connected to the frame plate 31 by screws. The right end of the ventilation box 30 is also provided with a protective net 32.

[0053] In this invention, the second heating rod 310 is connected to an external power source via a wire. When the control switch is activated, the second heating rod 310 heats and increases the temperature of the air pumped into the drying cylinder 1. The hot air accelerates the drying of the sludge inside. With the help of the protective net 32, impurities in the air entering the cylinder are intercepted, reducing damage to the second heating rod 310 and the fan 301.

[0054] In addition, a hollow area is provided between the inner wall and the outer wall of the drying cylinder 1. The hollow area is the heating chamber 15, and the heating chamber 15 is provided with a first heating rod 13.

[0055] The first heating rod 13 is connected to an external power source via a wire and the control switch is activated. This initial heating of the bottom of the drying cylinder 1 helps to continuously heat and dry the added sludge.

[0056] In this embodiment of the sludge drying and reduction device, the first heating rod 13 is first fixed in the heating chamber 15 on the drying cylinder 1 with the observation window 11. The feed hopper 12 with the top cover 120 is combined and fixed with the drying cylinder 1. The discharge pipe 14 with the sealing bolt 140 is fixed at the bottom of the drying cylinder 1. The output shaft of the motor 20 is connected to the main shaft 21, and the main shaft 21 extends into the interior of the drying cylinder 1. The auger blade 210 with the scraper 211 is connected to the main shaft 21. Then, the frame plate 31 with the second heating rod 310 is inserted into the slot 300. The fan 301 is combined and fixed with the internal fixing frame of the ventilation box 30. Then, the activated carbon filter cotton 41 is inserted into the storage compartment 400 of the filter box 40. The sealing cover 42 with the exhaust pipe 421 is inserted into the filter box 40 through the rubber gasket 420 and fixed with screws.

[0057] When sludge needs to be added for drying, the sludge is added into the drying cylinder 1 from the feed hopper 12. Then, the top cover 120 is inserted into the feed hopper 12, and the sealing bolt 140 is threaded into the discharge pipe 14. The first heating rod 13 is started, the second heating rod 310 is started, the control switch of the motor 20 is started, the output shaft rotates and drives the main shaft 21 to rotate continuously, the toothed belt 33 drives the main shaft 21 and the fan 301 to rotate synchronously, and the air heated by the ventilation box 30 is continuously delivered to the drying cylinder 1. With the cooperation of the screw conveyor blade 210 and the scraper 211, the sludge inside the drying cylinder 1 is continuously stirred, increasing the contact area between the air and the sludge, heating and drying the sludge, and at the same time reducing the sludge from sticking to the inside of the drying cylinder 1. The internal air is filtered and discharged through the filter box 40 to reduce the discharge of mixed particulate matter in the air and reduce environmental pollution.

[0058] The drying status of the sludge inside can be observed through the observation window 11. After drying is completed, the sealing bolt 140 is opened, and the dried sludge is guided to be discharged from the discharge pipe 14 under the continuous rotation of the auger blade 210.

Claims

1. A sludge drying and volume reduction device, comprising a drying cylinder, characterized in that: Both ends of the drying cylinder are equipped with support columns. The right end of the drying cylinder is equipped with a drive assembly for continuous sludge stirring. The top of the left end of the drying cylinder is equipped with a purification assembly for filtering the exhaust gas after internal heating. The upper right end of the drying cylinder is equipped with a blower assembly for internal ventilation. A hollow area is provided between the inner and outer walls of the drying cylinder. The hollow area is a heating chamber, and a first heating rod is provided in the heating chamber. The drive assembly includes a motor and a main shaft coaxially connected to the motor output shaft. The main shaft extends into the drying cylinder, and an auger blade is provided on the outer wall of the main shaft. Several scrapers are provided on the auger blade, and the bottom of the scrapers and the outer wall of the auger blade are in close contact with the inner wall of the drying cylinder. The purification assembly includes a filter box and activated carbon filter cotton inserted inside the filter box. The top of the filter box has a storage compartment, which is connected to the inside of the drying cylinder through a connection hole. The top of the filter box has a sealing cover, and the top of the sealing cover has an exhaust pipe that communicates with the inside of the storage compartment. The blower assembly includes a ventilation box and a fan mounted on a fixed frame inside the ventilation box. The fan's shaft has a driven gear at its end. The top of the ventilation box has a slot with a frame plate inside. The frame plate has several second heating rods inside.

2. The sludge drying and volume reduction device according to claim 1, characterized in that: The top of the support column is welded and fixed to the end of the drying cylinder. The drying cylinder is inclined, with the left end of the drying cylinder higher than the right end. An observation window is provided in the middle of the outer wall of the drying cylinder. The first heating rod is fixedly connected to the heating chamber by screws.

3. The sludge drying and reduction device according to claim 1, characterized in that: The drying cylinder has a feed hopper located at the upper middle position on the outer wall. The inside of the feed hopper is connected to the inside of the drying cylinder. The top of the feed hopper is covered. The drying cylinder has a discharge pipe located at the lower right end on the outer wall. The bottom of the discharge pipe is equipped with a sealing bolt.

4. The sludge drying and volume reduction device according to claim 1, characterized in that: The motor is fixedly connected to the right end of the drying cylinder by screws. The output shaft of the motor is connected to the main shaft by a coupling. The output shaft of the motor is also provided with a drive gear plate, and a toothed belt is provided between the drive gear plate and the driven gear plate.

5. The sludge drying and volume reduction device according to claim 1, characterized in that: The main shaft is rotatably connected to the drying cylinder, and the two ends of the auger blade are welded and fixed to the main shaft through connecting plates. The scrapers are distributed in a ring with equal spacing, and the scrapers are welded and fixed to the auger blade.

6. The sludge drying and volume reduction device according to claim 1, characterized in that: The bottom of the ventilation box is fixedly connected to the drying cylinder by screws. The fan is rotatably connected to the fixed frame by a rotating shaft. The second heating rods are evenly distributed and fixedly connected to the frame plate by screws. A protective net is also provided at the right end of the ventilation box.

7. The sludge drying and volume reduction device according to claim 1, characterized in that: The bottom of the filter box is fixedly connected to the drying cylinder by screws. The width of the inner wall of the storage chamber is adapted to the width of the outer wall of the activated carbon filter cotton. The width of the outer wall of the sealing cover is adapted to the width of the outer wall of the filter box. A rubber pad is provided at the bottom of the sealing cover. The width of the outer wall of the rubber pad is adapted to the width of the inner wall of the storage chamber. The sealing cover is fixedly connected to the filter box by screws. The bottom of the exhaust pipe is bonded and fixed to the sealing cover.

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