Environment-friendly treatment and drying equipment for mud

Abstract

The application relates to the technical field of mud drying equipment, and discloses a mud environment-friendly treatment drying equipment which comprises a positioning drying device composed of a drying cylinder and an inner container, a first rotating drying device composed of a first rotating cylinder, a first rotating plate and a first inner container, and a first rotating drying device composed of a second rotating plate and a second inner container; the internal diameters of the positioning inner container and the second inner container increase uniformly from one end to the other end; the internal diameter of the first inner container decreases uniformly from one end to the other end; and the internal diameters of the positioning inner container, the first inner container and the second inner container are in communication. When the mud in the mud is dried, the mud to be dried is added into the positioning drying cylinder from one end at the top of the positioning drying cylinder; the rotating directions of the second rotating cylinder and the first rotating cylinder are opposite; and hot air flows into the other end of the second rotating cylinder, so that the contact distance of the mud to be dried and the hot air is increased, the drying of the mud is not limited to the bottom of the inner cavity of the rotating cylinder, and the drying effect and the drying efficiency are improved.

Description

Technical Field

[0001] This application relates to the field of mud drying equipment technology, and in particular to a mud environmentally friendly treatment and drying equipment. Background Technology

[0002] In critical and specialized fields such as industrial wastewater treatment, river dredging, mining, and construction (e.g., pile foundations, tunnel boring machines), the removal of water from mud in an energy-saving, environmentally friendly, and economical manner achieves reduction, stabilization, harmlessness, and resource recovery. The process of mud environmental treatment and drying includes basic steps such as concentration, conditioning, dehydration, thermal drying, and exhaust gas treatment. Among these, thermal drying is the core step. Existing drying equipment commonly used is the rotary drum dryer, which uses a slightly inclined and rotating cylinder. The mud enters from the upper end, and hot air enters from the other end (or flows in parallel / counter-current with the mud). The inner wall of the cylinder has baffles that continuously lift and scatter the mud, increasing the contact area with the hot air.

[0003] However, although existing rotary drum dryers have lifting plates on the inner wall, the slurry to be dried is still concentrated on one side of the bottom of the drum cavity during drum rotation. This limits the drying area of ​​the slurry in the drum cavity to one side, resulting in low drying efficiency. Moreover, due to the influence of actual environment, the length of the drum is often insufficient, resulting in a short heat exchange distance of the slurry in the drum, which easily leads to the problem of insufficient drying. Summary of the Invention

[0004] This application proposes an environmentally friendly mud drying equipment, which has the advantages of high drying efficiency and good effect, and solves the problems of low drying efficiency and poor effect caused by the limited drying area of ​​the existing rotary drum dryer, which is limited to one side of the bottom of the drum cavity and the length limitation.

[0005] To achieve the above objectives, this application adopts the following technical solution: a mud environmental protection treatment and drying device, comprising:

[0006] A positioning drying device includes a positioning drying cylinder fixedly mounted on a support platform, a positioning inner liner fixedly installed inside the positioning drying cylinder, and an inlet opening at one end of the top of the positioning drying cylinder and the positioning inner liner.

[0007] The first rotary drying device includes a first rotary cylinder that is rotatably sleeved with a positioning drying cylinder. Several first rotating plates that are movably connected to the inner wall of the positioning inner liner are fixedly installed on the outer side of the first rotary cylinder. A first inner liner is fixedly installed inside the first rotary cylinder.

[0008] The second rotary drying device includes a second rotary cylinder that is rotatably sleeved with the first rotary cylinder. Several second rotating plates that are movably connected to the inner wall of the first inner liner are fixedly installed on the outer side of the second rotary cylinder. A second inner liner is fixedly installed inside the second rotary cylinder. A discharge port is opened at the other end of the second inner liner and the second rotary cylinder. A support assembly is fixedly installed inside the second inner liner.

[0009] The internal diameters of the positioning inner liner and the second inner liner increase uniformly from one end to the other, while the internal diameter of the first inner liner decreases uniformly from one end to the other, and the positioning inner liner, the first inner liner, and the second inner liner are internally connected.

[0010] When drying the mud in the mud, the mud to be dried is added into the positioning drying cylinder from one end of the top of the positioning drying cylinder. The second rotating cylinder rotates in the opposite direction to the first rotating cylinder, and the hot air enters from the other end of the second rotating cylinder.

[0011] Furthermore, the positioning drying cylinder is fixedly installed on the support frame, which is fixedly installed on the support platform. Positioning side covers are fixedly installed at both ends of the positioning drying cylinder. The inner side of the positioning side cover is rotatably connected to the outer side of the first rotating cylinder, and a sealing ring is provided at the connection between the positioning side cover and the first rotating cylinder. The inner side of the first rotating cylinder and the outer side of the positioning side cover are rotatably connected through bearings, so that the first rotating cylinder can rotate relative to the positioning side cover, the positioning inner liner, and the positioning drying cylinder. Thus, the mud to be dried inside the positioning inner liner is turned over by several first rotating plates fixedly installed on the outer side of the first rotating cylinder, so that the mud to be dried can be easily broken and can fully contact the hot airflow for drying. At the same time, the setting of the sealing ring does not affect the hot airflow or mudflow entering the connection between the first rotating cylinder and the positioning side cover.

[0012] Furthermore, a second side cover is fixedly installed at each end of the second rotating drum. An annular flow equalization box is fixedly installed on the outer side of one of the second side covers. A hot air inlet pipe is connected to the side of the annular flow equalization box away from the second side cover. An annular return box is fixedly installed on the outer side of one positioning side cover. A hot air outlet pipe is connected to the side of the annular return box away from the positioning side cover. The hot air for drying the mud enters the annular flow equalization box through the hot air inlet pipe, and after being evenly distributed by the annular flow equalization box, it enters the second inner liner, and then sequentially enters the first inner liner and the positioning inner liner, and is discharged by the hot air outlet pipe. This ensures that the flow direction of the hot air in the second inner liner, the first inner liner, and the positioning inner liner is always opposite to the rolling direction of the mud to be dried, which is conducive to the hot air coming into full contact with the mud to be dried and carrying away the moisture in the mud to be dried.

[0013] Furthermore, a second gear is fixedly installed on the outer side of the second side cover, and a second motor is fixedly installed on the top of the support platform. A second gear is fixedly installed on the output shaft of the second motor, and the second gear meshes with the first gear. The output shaft is driven by the second motor to rotate the first gear, thereby causing the second gear, the second side cover, the second drum, and the second rotating plate to rotate in the opposite direction relative to the first drum. The rotation of the second rotating plate relative to the first inner liner causes the slurry to be dried in the cavity between the first inner liner and the second drum to be turned over, which is conducive to the slurry to be dried coming into full contact with the hot airflow in the cavity between the first inner liner and the second drum.

[0014] Furthermore, a support assembly is movably fitted between the two second side covers. The support assembly includes a support shaft that is movably fitted with the two second side covers. A sealing ring is provided between the connection between the support shaft and the two second side covers for sealing. The two ends of the support shaft extend out of the outside of the second rotating drum and are fixedly connected to the support plate. The support plate is fixedly installed on both sides of the top of the support platform. The fixed support shaft and the two second side covers are rotatably fitted together by bearings, thereby forming a stable support for the second rotating drying device. When the second inner liner rotates together with the second gear, the second side covers and the second rotating drum, causing the mud inside the second inner liner to roll, the scraper cleans the mud adhering to the inner wall of the second inner liner in real time.

[0015] Furthermore, a first side cover is fixedly installed at each end of the first rotating drum. The inner side of the first side cover is rotatably connected to the outer side of the second rotating drum through a bearing, and a sealing ring is provided at the connection between the first side cover and the second rotating drum. A first gear is fixedly installed on the outer edge of the first side cover away from the first rotating drum. A first motor is fixedly installed on the top of the support platform. A first gear that meshes with the outer side of the first gear is fixedly installed on the output shaft of the first motor. The first gear is driven to rotate by the output shaft driven by the first motor. By utilizing the meshing action between the first gear and the first inner liner, the first gear, the first side cover, the first rotating drum, and the first rotating plate are driven to rotate together relative to the positioning drying drum. By utilizing the blocking effect of the first rotating plate in the cavity between the positioning inner liner and the first rotating drum, the slurry to be dried that has entered the cavity between the positioning inner liner and the first rotating drum can be turned over, which is conducive to the slurry to be dried coming into full contact with the hot airflow in the cavity between the positioning inner liner and the first rotating drum.

[0016] Furthermore, the first rotating drum and the first inner liner are provided with a plurality of first side covers at the end away from the inlet, and the first side covers are located between two adjacent first rotating plates. The second rotating drum and the second inner liner are provided with a second through groove at the end near the inlet, and the second through groove is located between two adjacent second rotating plates. Through the opening of the inlet and the second through groove, the chamber between the positioning inner liner and the first rotating drum, the chamber between the first inner liner and the second rotating drum, and the internal chamber of the second inner liner are connected, so that the slurry to be dried can move sequentially in the chamber between the positioning inner liner and the first rotating drum, the chamber between the first inner liner and the second rotating drum, and the internal chamber of the second inner liner, thereby increasing the contact distance between the slurry to be dried and the hot airflow, and thus improving the drying effect.

[0017] The beneficial effects of this invention are as follows:

[0018] 1. The mud environmental treatment and drying equipment provided in this application consists of a first rotating cylinder rotatably connected inside a fixed positioning drying cylinder, and a second rotating cylinder rotatably connected inside the first rotating cylinder, with the first and second rotating cylinders rotating in opposite directions. Utilizing a structural design where the diameters of the positioning inner liner, the first inner liner, and the second inner liner are uniformly varied, along with a first rotating plate on the outside of the first rotating cylinder and a second rotating plate on the outside of the second rotating cylinder, the mud to be dried can sequentially pass through the interiors of the positioning inner liner, the first inner liner, and the second inner liner. This increases the contact distance between the mud to be dried and the hot airflow, and the drying of the mud is not limited to the bottom of the rotating cylinder's inner cavity, thereby improving the drying effect and efficiency.

[0019] 2. The mud environmental treatment and drying equipment provided in this application, through the opposite rotation directions of the first and second rotating drums, and the structural design of the first rotating plate on the outside of the first rotating drum and the second rotating plate on the outside of the second rotating drum, can continuously tumble the mud in the positioning inner liner and the first inner liner by utilizing the rotation of the first rotating plate relative to the positioning inner liner and the rotation of the second rotating plate relative to the first inner liner. This makes the mud to be dried easier to break up and can fully contact the hot airflow for drying, further improving the drying effect, while avoiding the problem of the mud to be dried adhering to the inner wall of the positioning inner liner and the first inner liner. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort:

[0021] Figure 1 This is a schematic diagram of the structure of the present invention;

[0022] Figure 2for Figure 1 A cross-sectional schematic diagram of the intermediate drying unit;

[0023] Figure 3 for Figure 1 Schematic diagram of the structure of the centrally positioned drying cylinder;

[0024] Figure 4 for Figure 3 A schematic diagram of the cross-sectional structure;

[0025] Figure 5 for Figure 1 A schematic diagram of the first rotating drum structure in the middle;

[0026] Figure 6 for Figure 5 A schematic diagram of the cross-sectional structure;

[0027] Figure 7 for Figure 1 A schematic diagram of the first rotating drum structure in the middle;

[0028] Figure 8 for Figure 7 A schematic diagram of the cross-sectional structure.

[0029] In the diagram: 1. Support platform; 2. Support frame; 3. Positioning drying device; 301. Positioning drying cylinder; 302. Positioning inner liner; 303. Inlet; 304. Positioning side cover; 4. First rotating drying device; 401. First rotating cylinder; 402. First rotating plate; 403. First side cover; 404. First gear; 405. First inner liner; 406. First through groove; 5. Second rotating drying device; 501. Second rotating cylinder; 502. Second rotating plate; 503. Second side cover; 504. Second gear; 505. Second inner liner; 506. Second through groove; 507. Discharge port; 6. First motor; 7. Second motor; 8. Support assembly; 801. Support shaft; 802. Scraper; 9. Support plate; 10. Annular flow equalization box; 11. Hot air inlet pipe; 12. Annular return box; 13. Hot air outlet pipe. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Examples, such as Figures 1-2A mud environmental protection treatment and drying equipment includes a support platform 1, two support frames 2 are fixedly installed on the top of the support platform 1, a positioning drying device 3 is fixedly installed on the two support frames 2, a first rotating drying device 4 is rotatably sleeved inside the positioning drying device 3, and a second rotating drying device 5 is rotatably sleeved inside the first rotating drying device 4.

[0032] Please see Figures 1-4 The positioning drying device 3 includes a positioning drying cylinder 301 fixedly installed on two support frames 2. A positioning inner liner 302 is fixedly installed inside the positioning drying cylinder 301. The inner diameter of the positioning inner liner 302 increases uniformly from one end to the other end. An inlet 303 is provided on one side of the top of the positioning inner liner 302 and the positioning drying cylinder 301. The inlet 303 is located at the end of the positioning inner liner 302 with a smaller inner diameter. Positioning side covers 304 are flanged to both ends of the positioning drying cylinder 301.

[0033] Please see Figures 1-6The first rotating drying device 4 includes a first rotating cylinder 401 that is rotatably connected to the positioning side cover 304 via bearings. Both ends of the first rotating cylinder 401 extend beyond the outer sides of the positioning drying cylinder 301. A sealing ring is provided at the connection between the first rotating cylinder 401 and the positioning side cover 304, allowing the first rotating cylinder 401 to rotate relative to the positioning side cover 304 and the positioning drying cylinder 301 while simultaneously forming an effective seal between the two ends of the cavity between the first rotating cylinder 401 and the positioning inner liner 302. Several first rotating plates 402 arranged in a circular array are fixedly installed on the outer wall of the first rotating cylinder 401. The number of first rotating plates 402 is not less than three, and the first rotating plates 402 are located inside the positioning drying cylinder 301. The side of the first rotating plate 402 away from the first rotating cylinder 401 is movably fitted against the inner wall of the positioning inner liner 302. First side covers 403 are fixedly installed at both ends of the first rotating cylinder 401. A first side cover 403 is fixedly installed on the outer edge of the side of the first side cover 403 away from the first rotating cylinder 401. A gear 404 is fixedly mounted on the top of the support platform 1. A first motor 6 is fixedly mounted on the output shaft of the first motor 6, meshing with the outer side of the first gear 404. The first motor 6 drives the output shaft to rotate the first gear. The meshing action of the first gear with the first inner liner 405 causes the first gear 404, the first side cover 403, the first rotating drum 401, and the first rotating plate 402 to rotate relative to the positioning drying cylinder 301. The blocking effect of the first rotating plate 402 in the cavity between the positioning inner liner 302 and the first rotating drum 401 can cause the slurry to be dried to be turned over in the cavity between the positioning inner liner 302 and the first rotating drum 401. This facilitates the slurry to be dried to fully contact the hot airflow in the cavity between the positioning inner liner 302 and the first rotating drum 401, so that the slurry to be dried is not confined to the bottom of the inner cavity of the positioning inner liner 302 during the drying process, thereby improving the drying efficiency and preventing the slurry from adhering to the inner wall of the positioning inner liner 302.

[0034] A first inner liner 405 is fixedly installed inside the first rotating drum 401. The inner diameter of the first inner liner 405 decreases uniformly from one end to the other. A first through groove 406 is opened at one end of the first inner liner 405 and the first rotating drum 401, which is connected and located between two adjacent first rotating plates 402. The first through groove 406 is located at the end of the first rotating drum 401 away from the inlet 303. The slurry to be dried in the cavity between the inner liner 302 and the first rotating drum 401 rolls from the inlet 303 to the first through groove 406 and then falls into the interior of the first inner liner 405 through the first through groove 406.

[0035] Please see Figures 1-8The second rotary drying device 5 includes a second rotating cylinder 501 rotatably sleeved with the first side cover 403, and a sealing ring is provided at the connection between the second rotating cylinder 501 and the first side cover 403 for sealing. Both ends of the second rotating cylinder 501 extend beyond the outside of the first rotating cylinder 401. Several second rotating plates 502 arranged in a circumferential array are fixedly installed on the outer side of the second rotating cylinder 501. The number of second rotating plates 502 does not exceed the number of first rotating plates 402. The side of the second rotating plates 502 away from the second rotating cylinder 501 is movably fitted against the inner wall of the first inner liner 405. Second side covers 503 are fixedly installed at both ends of the second rotating cylinder 501, and a second gear 504 is fixedly installed on the outer side of one of the second side covers 503. Support platform 1 A second motor 7 is fixedly installed on the top of the device. A second gear is fixedly installed on the output shaft of the second motor 7, and the second gear meshes with the second gear 504. The second motor 7 drives the output shaft to rotate the first gear, thereby causing the second gear 504, the second side cover 503, the second rotating drum 501, and the second rotating plate 502 to rotate in the opposite direction to the first rotating drum 401. Similarly, the rotation of the second rotating plate 502 relative to the first inner liner 405 causes the slurry to be dried in the cavity between the first inner liner 405 and the second rotating drum 501 to be turned over, which is conducive to the slurry to be dried coming into full contact with the hot airflow in the cavity between the first inner liner 405 and the second rotating drum 501, further improving the drying effect and efficiency.

[0036] A second inner liner 505 is fixedly installed inside the second rotating drum 501. The inner diameter of the second inner liner 505 increases uniformly from one end to the other. A second through groove 506 is opened on the second inner liner 505 and the second rotating drum 501, which is connected and located between two adjacent second rotating plates 502. The second through groove 506 is located on the second rotating drum 501 at the end away from the first through groove 406. By rotating the second rotating plate 502 on the outside of the second rotating drum 501 relative to the first inner liner 405, the slurry between the second rotating drum 501 and the first inner liner 405 is dried by heat exchange with the hot airflow and then enters the interior of the second inner liner 505 through the second through groove 506. A discharge port 507 with several circumferential arrays is opened at the end of the second rotating drum 501 away from the second through groove 506, and the discharge port 507 is located outside the first rotating drum 401.

[0037] A support assembly 8 is movably fitted between the two second side covers 503. The support assembly 8 includes a support shaft 801 that is movably fitted with the two second side covers 503. A sealing ring is provided between the connection between the support shaft 801 and the two second side covers 503 for sealing. The two ends of the support shaft 801 extend out of the outside of the second rotating drum 501 and are fixedly connected to the support plate 9. The support plate 9 is fixedly installed on both sides of the top of the support platform 1. A scraper 802 is fixedly installed on the outside of the support assembly 8. The side of the scraper 802 away from the support shaft 801 is movably fitted with the inner wall of the second inner liner 505. When the second inner liner 505 rotates with the second rotating drum 501, the mud in the second inner liner 505 rolls toward the discharge port 507 and is collected at the discharge port 507 (a dry mud conveyor belt or collection box is placed below the discharge port 507, not shown in the figure).

[0038] An annular flow equalization box 10 is fixedly installed on the outer side of another second side cover 503. A hot air inlet pipe 11 is connected to the side of the annular flow equalization box 10 away from the second side cover 503. An annular return box 12 is fixedly installed on the outer side of one of the positioning side covers 304. A hot air outlet pipe 13 is connected to the side of the annular return box 12 away from the positioning side cover 304. The hot air flows into the annular flow equalization box 10 through the hot air inlet pipe 11, and then flows evenly into the interior of the second inner liner 505. It flows through the second through groove 506, the chamber between the first inner liner 405 and the second rotating cylinder 501, the first side cover 403, the chamber between the first rotating cylinder 401 and the positioning inner liner 302, and the annular return box 12, and then exits from the hot air outlet pipe 13.

[0039] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A mud eco-friendly treatment drying apparatus, characterized by, The utility model relates to a mud drying device, which comprises a positioning drying device, a first rotating drying device and a second rotating drying device. The positioning drying device comprises a positioning drying cylinder fixedly arranged on a support platform, a positioning inner container fixedly arranged in the positioning drying cylinder, and an inlet arranged at one end of the top of the positioning drying cylinder. The first rotating drying device comprises a first rotating cylinder rotatably sleeved with the positioning drying cylinder, a plurality of first rotating plates fixedly arranged on the outer side of the first rotating cylinder and movably attached to the inner wall of the positioning inner container, and a first inner container fixedly arranged in the first rotating cylinder. The second rotating drying device comprises a second rotating cylinder rotatably sleeved with the first rotating cylinder, a plurality of second rotating plates fixedly arranged on the outer side of the second rotating cylinder and movably attached to the inner wall of the first inner container, a second inner container fixedly arranged in the second rotating cylinder, and a discharge port arranged at the other end of the second rotating cylinder. The inner diameters of the positioning inner container and the second inner container increase uniformly from one end to the other end, the inner diameter of the first inner container decreases uniformly from one end to the other end, and the positioning inner container, the first inner container and the second inner container are in communication. When the mud in the mud is dried, the mud to be dried is added into the positioning drying cylinder from one end of the top of the positioning drying cylinder, the rotating directions of the second rotating cylinder and the first rotating cylinder are opposite, and the hot air flows into the second rotating cylinder from the other end. The positioning drying cylinder is fixedly arranged on a support frame, the support frame is fixedly arranged on the support platform, two positioning side covers are fixedly arranged at the two ends of the positioning drying cylinder, the inner side of each positioning side cover is rotatably connected to the outer side of the first rotating cylinder, and a sealing ring is arranged at the connecting part of each positioning side cover and the first rotating cylinder. Two second side covers are fixedly arranged at the two ends of the second rotating cylinder, a support assembly is movably sleeved between the two second side covers, the support assembly comprises a support shaft movably sleeved with the two second side covers, a sealing ring is arranged between the connecting part of the support shaft and the two second side covers to seal them, the two ends of the support shaft extend out of the second rotating cylinder and are fixedly connected to support plates, and the support plates are fixedly arranged on the two sides of the top of the support platform. A scraper is fixedly arranged on the outer side of the support assembly, and the side of the scraper away from the support shaft movably attaches to the inner wall of the second inner container.

2. The mud eco-friendly treatment drying apparatus according to claim 1, wherein An annular flow uniformizing box is fixedly arranged on the outer side of one second side cover, a hot air input pipe is connected to the side of the annular flow uniformizing box away from the second side cover, an annular backflow box is fixedly arranged on the outer side of one positioning side cover, and a hot air discharge pipe is connected to the side of the annular backflow box away from the positioning side cover.

3. The mud eco-friendly treatment drying apparatus according to claim 1, wherein A second gear is fixedly arranged on the outer side of one second side cover, a second motor is fixedly arranged on the top of the support platform, a second driving gear is fixedly arranged on the output rotating shaft of the second motor, and the second driving gear is engaged with the second gear.

4. The mud eco-friendly treatment drying apparatus according to claim 1, wherein The first side cover is fixedly installed at the two ends of the first rotating drum respectively, the inner side of the first side cover is rotatably connected with the outer side of the second rotating drum through a bearing, and a sealing ring is arranged at the connecting part of the first side cover and the second rotating drum, a first gear is fixedly installed at the outer edge of the side of the first side cover away from the first rotating drum, and a first motor is fixedly installed at the top of the supporting platform, and a first driving gear meshing with the outer side of the first gear is fixedly installed on the output rotating shaft of the first motor.

5. The mud eco-friendly treatment drying apparatus according to claim 1, wherein A plurality of first through grooves are arranged at the end of the first rotating drum and the first inner container away from the inlet, and the first through grooves are located between adjacent two first rotating plates, and a second through groove is arranged at the end of the second rotating drum and the second inner container close to the inlet, and the second through groove is located between adjacent two second rotating plates.

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