CN212403915U

CN212403915U - Sludge drying machine

Info

Publication number: CN212403915U
Application number: CN202020787932.6U
Authority: CN
Inventors: 胡露露; 谌伟艳; 李宗春; 高埜夫
Original assignee: Nanjing Zhongsheng Hongxin Environmental Protection Engineering Co ltd
Current assignee: Nanjing Zhongsheng Hongxin Environmental Protection Engineering Co ltd
Priority date: 2020-05-13
Filing date: 2020-05-13
Publication date: 2021-01-26
Anticipated expiration: 2030-05-13

Abstract

The utility model relates to a sludge drying machine, including the mummification room, the outer wall of mummification room is equipped with the frame, first conveying mesh belt is installed on the upper portion of mummification room, second conveying mesh belt is installed on the upper portion of mummification room, be equipped with wind face adjusting device between second conveying mesh belt and the first conveying mesh belt, install the forced draught blower in the middle of the bottom of mummification room, the forced draught blower passes through induced air pipeline and air intake connection, one side of forced draught blower is equipped with the drive forced draught blower moving motor. The utility model discloses an installation wind face adjusting device between second conveying mesh belt and first conveying mesh belt, wind face adjusting device sets up at the inside level of mummification room for adjust the air inlet area of from bottom to top transport, the wind speed wind pressure through on the first conveying mesh belt can increase substantially, makes the mud surface can be dried more rapidly, thereby improves the efficiency that mud was dried.

Description

Sludge drying machine

Technical Field

The utility model relates to an environmental protection equipment technical field especially relates to a sludge drying machine.

Background

In recent years, the yield of domestic sewage and sludge is continuously increased, the current policies of environmental protection, energy conservation and emission reduction are stricter, and the reasonable and effective treatment of sludge becomes a key task to be solved urgently. In the process of sludge resource treatment, sludge drying is a crucial link.

The sludge drying is to transfer heat to sludge through a medium to evaporate water in the sludge so as to complete a drying process, the process mainly comprises evaporation and diffusion, the evaporation mainly comprises the migration and gasification of surface water so as to remove the water, the diffusion mainly depends on the temperature gradient between the inside of the sludge and the outside so as to enable the water in the sludge to move to the surface under the drive of the heat, and the two processes are continuously and alternately carried out until the sludge is completely dried.

Chinese patent application No. CN 110526546 a discloses a sludge drying apparatus and a sludge drying treatment method, in which: the sludge is conveyed into a blanking hopper of the drying chamber through a screw conveyor, enters the drying chamber and falls on a transmission mesh belt; under the drive of the roller, the transmission mesh belt stably and continuously operates at a certain speed, and the sludge moves along with the transmission mesh belt; the lower end of the transmission mesh belt continuously enters dry hot air, passes through the transmission mesh belt and moves towards the upper end; the dry hot air is contacted with the sludge in the process of passing through the transmission mesh belt to exchange heat, and the moisture in the sludge is evaporated and enters the dry hot air, so that the moisture content of the sludge is reduced; wet and cold air with moisture after heat exchange with the sludge comes out from the top of the drying chamber, one path of the wet and cold air is conveyed to a heat pump system through a pipeline, and finally the wet and cold air is treated and circulated back to the lower surface of the transmission mesh belt through the pipeline to heat the sludge again.

Above-mentioned patent and current sludge drying equipment, the air-out on the air inlet down all in the mummification room, and the moist air that goes out is heated after the heat pump dehumidification part dehumidifies, reentrant drying house, and the circulation is reciprocal, reaches the purpose of drying to mud. Two layers of mesh belts for transporting sludge are generally arranged in the drying chamber, and the whole dry hot air dries the sludge from bottom to top. In the drying process, the upper and lower layers of mesh belts make the time for the sludge to pass through the air different by adjusting the speed. Because the upper layer sludge just enters the drying chamber, the water content of the upper layer sludge and the lower layer sludge are different, the lower layer sludge is relatively dry and light in weight after passing through the double-layer mesh belt, the lower layer sludge needs relatively high temperature and moderate wind speed, and the last time sludge of the mesh belt is relatively wet and heavy in weight.

Because the sludge belongs to the porous medium, the effect of continuous air passing is surface drying and internal moisture, so the effect of drying the sludge flowing out of the sludge drying device is poor, and the sludge drying device is not beneficial to complete drying of the sludge.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a sludge drying machine to solve the problem that meets among the above-mentioned background art.

In order to achieve the above purpose, the technical scheme of the utility model is as follows:

the utility model provides a sludge drying machine, includes the mummification room, the outer wall of mummification room is equipped with the frame, top one side of mummification room is equipped with the feed inlet, the top opposite side of mummification room is equipped with the return air inlet, first conveyer belt is installed on the upper portion of mummification room, second conveyer belt is installed on the upper portion of mummification room, be equipped with wind face adjusting device between second conveyer belt and the first conveyer belt, bottom one side of mummification room is equipped with the air intake, the bottom opposite side of mummification room is equipped with the discharge gate, install the forced draught blower in the middle of the bottom of mummification room, the forced draught blower passes through induced air pipeline and air intake connection, one side of forced draught blower is.

In the above scheme, wind face adjusting device sets up at the inside level of mummification room, wind face adjusting device includes movable plate, fixed plate and step motor, the movable plate is located the top of fixed plate, the both sides level of fixed plate is fixed in the frame inboard, step motor passes through the support to be fixed in frame outer wall middle part, step motor with the movable plate transmission is connected.

In the scheme, the movable plate is internally provided with the air isolation areas and the ventilation areas which are arranged in a staggered mode, and the ventilation areas are of rectangular frame-shaped structures.

In the above scheme, the moving plate and the fixed plate have the same structure.

In the above scheme, the two sides of the belt body of the first conveying mesh belt and the two sides of the belt body of the second conveying mesh belt are both provided with the outer guard plates.

In the above scheme, the fixed bearing is arranged at the transmission roller on one side of the first transmission mesh belt, the movable bearing is arranged at the transmission roller on the other side of the first transmission mesh belt and used for horizontally adjusting the distance between the transmission rollers on two sides of the first transmission mesh belt, and the transmission rollers on two sides of the second transmission mesh belt have the same structure as the transmission rollers on two sides of the first transmission mesh belt.

In the above scheme, the internally mounted of feed inlet has the slitter, the blanking mouth of feed inlet is located directly over the feed end of first conveying mesh belt.

In the above scheme, a first inclined plate is fixed below the first conveying mesh belt discharging end in an inclined manner, two sides of the first inclined plate are fixed on the outer wall of the frame, the first inclined plate is inclined downwards by 45-60 degrees, and the inclined surface of the first inclined plate faces the feeding end of the second conveying mesh belt.

In the above scheme, a second inclined plate is fixed below the discharge end of the second conveying net belt, two sides of the second inclined plate are fixed on the outer wall of the frame, the second inclined plate inclines downwards by 45-60 degrees, and the inclined plane of the second inclined plate faces the discharge hole.

In the above scheme, the frame is formed by violently managing, standpipe and axial pipe welding, the outer wall of frame is fixed with the heated board, the observation window is installed near the top of discharge gate in the frame bottom.

Compared with the prior art, the beneficial effects of the utility model are that:

1. an air surface adjusting device is arranged between the second conveying mesh belt and the first conveying mesh belt, and the air surface adjusting device is horizontally arranged in the drying chamber and used for adjusting the air inlet area conveyed from bottom to top. The forced draught blower of mummification room bottom is dried mud from up down with the mode of convection current, and when mud moisture content is great, the wind speed wind pressure is big more, and drying efficiency is high more, so after wind face adjusting device adjusts the air inlet area, the wind speed wind pressure through on the first conveying mesh belt can increase substantially, makes the mud surface can be dried more rapidly to improve the efficiency that mud was dried. When the sludge serving as the porous medium is blocked by the wind-isolating partition plate in a windless time period, the water inside the sludge can permeate to the surface, and when the sludge passes through the lower part of the wind, the water is taken away better.

2. The heat insulation plate is fixed on the outer wall of the frame, so that the heat inside the drying chamber cannot leak to the external environment, unnecessary energy loss is avoided, and the sludge inside the drying chamber is dried conveniently; through the internally mounted at the feed inlet has the slitter, cuts into the strip with the sludge piece through the slitter, and the mud of bar form can increase the area of contact of mud strip surface and outside air, continuous output bar form mud like this, and the inside moisture of the mud of being convenient for exposes at the mud surface, also improves the mummification efficiency of mud greatly.

3. The two sides of the belt body of the first conveying net belt and the two sides of the belt body of the second conveying net belt are respectively provided with the outer guard plates, so that the sludge is prevented from being scattered from the side in the transverse movement process. Through set up the adjustable bearing in first conveying guipure and second conveying guipure, can adjust the distance between conveying guipure driving shaft and the driven shaft, be for conveniently adjusting the distance between the transmission roller bearing of both sides, can adjust conveying guipure in the production process of reality at moderate elasticity degree, avoid too loose and too tight local atress too big or motor overload that leads to. The top of the air feeder is provided with the opening, so that an airflow field in the drying chamber is more uniform, and sludge at two ends of the conveying net belt can also obtain a better drying effect.

Drawings

FIG. 1 is a schematic view of the overall internal structure of the present invention;

fig. 2 is a schematic structural view of the middle moving plate of the present invention;

reference numbers in the figures: 1-a frame; 11-a drying chamber; 12-a feed inlet; 121-a slitter; 13-air return; 14-a wind surface adjusting device; 141-a moving plate; 142-a fixed plate; 143-step motor; 144-a wind-insulated zone; 145-a ventilation zone; 15-air inlet; 151-a draught duct; 16-a blower; 161-motor; 162-open mouth; 17-a discharge hole; 171-a viewing window; 18-a first transport web; 181-a first sloping plate; 182-outer guard plate; 183-fixed bearing; 184-a live bearing; 19-a second conveyor belt; 191-a second sloping plate.

Detailed Description

The technical solution of the present invention will be further described in detail with reference to the accompanying drawings and embodiments.

As shown in figure 1, a sludge drying machine, including drying chamber 1, the frame 11 has been installed to drying chamber 1's outer wall, and the inside of frame 11 has just also constituted this drying chamber 1 who is used for the sludge drying, and frame 11 is formed by violently managing, standpipe and axial pipe welding, and these steel pipes also are convenient for at the equipment of 11 internally mounted other mummification mud of frame. The outer wall of the frame 11 is fixed with a heat insulation board, the heat insulation board is wrapped on the outer wall of the frame 11 to wrap the drying chamber 1, so that a heat insulation environment is provided for the drying chamber 1, and drying of sludge in the drying chamber 1 is facilitated. The outer wall of the whole sludge drying machine can adopt a polyurethane foaming heat-insulating flat plate, so that the heat inside the drying chamber 1 cannot be leaked to the external environment, and unnecessary energy loss is avoided.

A first conveying mesh belt 18 is arranged at the upper part of the drying chamber 1, a second conveying mesh belt 19 is arranged at the lower part of the drying chamber 1, and sludge to be dried is conveyed back and forth through the two layers of conveying mesh belts. The motors and the speed reducers for driving the first conveying mesh belt 18 and the second conveying mesh belt 19 are arranged on the outer wall of the drying room in a suspension mode, so that the problem that the failure rate is increased in a high-temperature and humid environment for long-term operation is avoided.

One side of the top of the drying chamber 1 is provided with a feeding hole 12 for containing sludge to be dried. As a preferred scheme, internally mounted at feed inlet 12 has slitter 121, cuts into the strip through slitter 121 with the sludge piece, and the mud of bar form can increase the area of contact of mud strip surface and outside air, and the continuous output bar form mud like this is convenient for the inside moisture of mud to expose at the mud surface, also improves the mummification efficiency of mud greatly. The blanking port of the feeding port 12 is located right above the feeding end of the first conveying mesh belt 18, so that sludge can fall on the feeding end of the first conveying mesh belt 18, and the first conveying mesh belt 18 can transport sludge conveniently. And an air return opening 13 is formed in the other side of the top of the drying chamber 1, and the air return opening 13 is connected with an external heat pump system and used for collecting hot air transmitted from the bottom of the drying chamber 1 from bottom to top.

As a preferable scheme, the two sides of the first conveying mesh belt 18 and the two sides of the second conveying mesh belt 19 are both provided with outer guard plates 182, so that the sludge is prevented from being scattered from the side in the transverse movement process.

As a preferable scheme, a fixed bearing 183 is arranged at the driving roller on one side of the first conveying mesh belt 18, a movable bearing 184 is arranged at the driving roller on the other side of the first conveying mesh belt 18, the movable bearing 184 is used for horizontally adjusting the distance between the driving rollers on both sides of the first conveying mesh belt 18, and the structure of the driving rollers on both sides of the second conveying mesh belt 19 is the same as that of the driving rollers on both sides of the first conveying mesh belt 18. The movable bearing 184 is formed by combining a guide rail, a movable supporting block and a positioning bolt, can adjust the distance between a driving shaft and a driven shaft of the conveyer belt, namely, the distance between the transmission rollers at two sides can be conveniently adjusted, the conveyer belt can be adjusted to be in proper tightness degree in the actual production process, and the phenomenon that local stress is too large or the motor is overloaded due to too loose and too tight is avoided. The movable bearing 184 may be designed by other movable bases, and is limited by a limiting block to adjust the distance between the transmission rollers on both sides of the conveyor belt, and in practice, the distance between the transmission rollers on both sides can be adjusted.

An air surface adjusting device 14 is arranged between the second conveying mesh belt 19 and the first conveying mesh belt 18, and the air surface adjusting device 14 is horizontally arranged in the drying chamber 1 and used for adjusting the air inlet area conveyed from bottom to top. The wind surface adjusting device 14 comprises a moving plate 141, a fixed plate 142 and a stepping motor 143, wherein the moving plate 141 is located at the top of the fixed plate 142, two sides of the fixed plate 142 are horizontally fixed at the inner side of the rack 11, the stepping motor 143 can be a BYF series hybrid stepping motor, the stepping motor 143 is fixed at the middle part of the outer wall of the rack 11 through a bracket, and the stepping motor 143 is in transmission connection with the moving plate 141.

Referring to fig. 2, the moving plate 141 is provided with an air isolation area 144 and an air permeable area 145 inside, the air isolation area 144 and the air permeable area 145 are staggered, and the air permeable area 145 is a rectangular frame structure. Preferably, the moving plate 141 and the fixed plate 142 have the same structure. In the using process, the moving plate 141 is driven to move left and right in the horizontal direction by the stepping motor 143, so that the ventilating areas 145 arranged inside the moving plate 141 and the ventilating areas 145 on the fixing plate 142 are overlapped in a staggered mode, the air outlet area is reduced, the wind speed and the wind pressure in transmission are greatly improved, the sludge surface is dried more rapidly, and the sludge drying efficiency is improved.

An air inlet 15 is formed in one side of the bottom of the drying chamber 1, and in the implementation process, a connecting flange is mounted on the air return port 13 and the air inlet 15, and can be in sealing connection with an air channel of the dehumidifying dryer through the connecting flange, and is connected with an external heat pump system, so that the hot air can be enabled to perform circulating work in a closed space.

The other side of the bottom of the drying chamber 1 is provided with a discharge hole 17, and the top of the bottom of the rack 11 close to the discharge hole 17 is provided with an observation window 171 which can be used for observing the transfer condition of sludge during operation, thereby ensuring the quality and quantity of the dried sludge. The middle of the bottom of the drying chamber 1 is provided with a blower 16, the blower 16 is connected with the air inlet 15 through an air guide pipeline 151, one side of the blower 16 is provided with a motor 161 for driving the blower 16 to operate, the motor 161 can be selected according to the output power of the blower 16, and the top of the blower 16 is provided with an opening 162. The shape of the outlet of the blower 16 is modified, and the opening 162 is additionally arranged, so that the airflow field in the drying chamber 1 is more uniform, and the sludge at the two ends of the conveying mesh belt can be dried better.

In this embodiment, the blower 16, the motor 161 and the induced air duct 151 are disposed at the bottom of the drying chamber 1 and below all the conveying mesh belts, and the blower 16 continuously operates to drive the high-temperature and low-humidity air from below to above and pass through each conveying mesh belt to take away the moisture in the sludge, thereby achieving the effect of drying the sludge.

In the above scheme, as a preferable scheme, a first inclined plate 181 is fixed obliquely below the discharge end of the first conveying mesh belt 18, two sides of the first inclined plate 181 are fixed on the outer wall of the frame 11, the first inclined plate 181 is inclined downward by 45-60 degrees, and the inclined surface of the first inclined plate 181 faces the feed end of the second conveying mesh belt 19. The first inclined plate 181 is used to block the moving direction of the sludge, so that the sludge falling from the discharge end of the first conveyor belt 18 is guided to the feed end of the second conveyor belt 19.

In the above-mentioned scheme, as a preferable scheme, a second inclined plate 191 is fixed obliquely below the discharge end of the second conveying net belt 19, both sides of the second inclined plate 191 are fixed on the outer wall of the frame 11, the second inclined plate 191 inclines downward by 45-60 degrees, and the inclined surface of the second inclined plate 191 faces the discharge port 17. The second sloping plate 191 is used for blocking the movement direction of the sludge, so that the sludge falling from the discharge end of the second conveying mesh belt 19 is guided to the discharge port 17, and the dried sludge is conveniently collected in a centralized manner.

The utility model discloses an installation wind face adjusting device 14 between second conveying mesh belt 19 and first conveying mesh belt 18, wind face adjusting device 14 sets up at the inside level of mummification room 1 for adjust the air inlet area of carrying from bottom to top. The forced draught blower 16 of drying chamber 1 bottom is dried sludge from up down with the mode of convection current, and when mud moisture content was great, the wind speed wind pressure was big more, and drying efficiency is higher, so after wind face adjusting device 14 adjusted the air inlet area, the wind speed wind pressure through on first conveying mesh belt 18 can increase substantially, makes the mud surface can be dried more rapidly to improve the efficiency of mud stoving. When the sludge serving as the porous medium passes through the period of no wind blocked by the partition board of the wind isolation area 144, the water inside the sludge can permeate to the surface, and when the sludge passes through the lower part of the wind, the water is taken away better.

The utility model discloses in adopted two-layer conveying mesh belt, of course also can adopt multilayer conveying mesh belt, as long as violently manage and standpipe installation wind level adjusting device 14 through frame 11 between adjacent two-layer conveying mesh belt, alright with mummification conveying in-process mud with more limit. The blower 16, the motor 161 and the induced air pipeline 151 are arranged at the bottom of the drying chamber 1 and are positioned below all the conveying mesh belts, and the blower 16 continuously operates to drive high-temperature low-humidity air from the lower part to the upper part, so that the high-temperature low-humidity air passes through all the conveying mesh belts to take away moisture in sludge, and the sludge is dried.

The above-mentioned embodiments further explain in detail the objects, technical solutions and advantages of the present invention, and it should be understood that the above-mentioned embodiments are only the embodiments of the present invention, and are not intended to limit the scope of the present invention, any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the scope of the present invention.

Claims

1. The utility model provides a sludge drying machine, includes mummification room (1), its characterized in that: the outer wall of the drying chamber (1) is provided with a frame (11), one side of the top of the drying chamber (1) is provided with a feeding hole (12), an air return opening (13) is formed in the other side of the top of the drying chamber (1), a first conveying mesh belt (18) is installed on the upper portion of the drying chamber (1), a second conveying mesh belt (19) is arranged at the upper part of the drying chamber (1), an air passing surface adjusting device (14) is arranged between the second conveying mesh belt (19) and the first conveying mesh belt (18), an air inlet (15) is formed in one side of the bottom of the drying chamber (1), a discharge hole (17) is formed in the other side of the bottom of the drying chamber (1), a blower (16) is arranged in the middle of the bottom of the drying chamber (1), the blower (16) is connected with an air inlet (15) through an air guide pipeline (151), and a motor (161) for driving the blower (16) to operate is arranged on one side of the blower (16).

2. The sludge drying machine according to claim 1, characterized in that: wind face adjusting device (14) sets up at the inside level of mummification room (1), wind face adjusting device (14) are including movable plate (141), fixed plate (142) and step motor (143), movable plate (141) are located the top of fixed plate (142), the both sides level of fixed plate (142) is fixed in frame (11) inboardly, step motor (143) are fixed in frame (11) outer wall middle part through the support, step motor (143) with movable plate (141) transmission is connected.

3. The sludge drying machine according to claim 2, characterized in that: the movable plate (141) is internally provided with an air isolation area (144) and an air permeable area (145), the air isolation area (144) and the air permeable area (145) are arranged in a staggered mode, and the air permeable area (145) is of a rectangular frame-shaped structure.

4. The sludge drying machine according to claim 2, characterized in that: the moving plate (141) and the fixed plate (142) have the same structure.

5. The sludge drying machine according to claim 1, characterized in that: outer guard plates (182) are arranged on two sides of the belt body of the first conveying mesh belt (18) and two sides of the belt body of the second conveying mesh belt (19), and an opening (162) is formed in the top of the air feeder (16).

6. The sludge drying machine according to claim 1, characterized in that: the transmission roller department of first conveying guipure (18) one side is equipped with fixing bearing (183), the transmission roller department of first conveying guipure (18) opposite side is equipped with movable bearing (184), movable bearing (184) are used for the level (l) ing distance between the transmission roller of first conveying guipure (18) both sides, the structure of second conveying guipure (19) both sides transmission roller is the same with the structure of first conveying guipure (18) both sides transmission roller.

7. The sludge drying machine according to claim 1, characterized in that: the inside mounting of feed inlet (12) has slitter (121), the blanking mouth of feed inlet (12) is located directly over the feed end of first conveying mesh belt (18).

8. The sludge drying machine according to claim 1, characterized in that: the inclined lower side of the discharge end of the first conveying mesh belt (18) is fixed with a first inclined plate (181), two sides of the first inclined plate (181) are fixed on the outer wall of the rack (11), the first inclined plate (181) inclines downwards by 45-60 degrees, and the inclined plane of the first inclined plate (181) faces the feed end of the second conveying mesh belt (19).

9. The sludge drying machine according to claim 1, characterized in that: the oblique below of second conveying guipure (19) discharge end is fixed with second swash plate (191), the both sides of second swash plate (191) are fixed on frame (11) outer wall, second swash plate (191) downward sloping 45 ~ 60 degrees, the inclined plane of second swash plate (191) towards discharge gate (17).

10. The sludge drying machine according to claim 1, characterized in that: frame (11) are formed by violently managing, standpipe and axial pipe welding, the outer wall of frame (11) is fixed with the heated board, observation window (171) are installed near the top of discharge gate (17) in frame (11) bottom.