CN217351156U

CN217351156U - Continuous sludge drying box

Info

Publication number: CN217351156U
Application number: CN202221361701.4U
Authority: CN
Inventors: 柳延日; 张菊平; 张铭尹
Original assignee: Jiangsu Tongyong Environmental Protection Group Co ltd
Current assignee: Jiangsu Tongyong Environmental Protection Group Co ltd
Priority date: 2022-06-02
Filing date: 2022-06-02
Publication date: 2022-09-02
Anticipated expiration: 2032-06-02

Abstract

The utility model discloses a continuous sludge drying box, wherein a feed inlet, a plurality of air outlets and a discharge port are arranged on a box body, a plurality of layers of conveyor belts are arranged in the box body, the circulating rotating directions of the adjacent two layers of conveyor belts are opposite, an air equalizing channel is arranged above the conveyor belts, and a plurality of air blowing ports are arranged on the air equalizing channel; a mud receiving plate is arranged below the lowermost conveyer belt, and a space is reserved between the mud receiving plate and the conveyer belt; a plurality of mud scrapers are arranged on the surface of the lowermost conveyor belt at intervals. The utility model discloses a mud scraper has utilized the conveying power of conveyer belt indirectly as dust clearance piece, in sludge drying process, automatic dust that continuously docks on the mud scraper is cleared up, after sludge drying accomplishes, the dust is also cleared up together, need not clear up the drying cabinet through cleaning device by the manual work again, this drying cabinet need not be equipped with dust cleaning device again alone promptly, equipment cost and cost of labor have been practiced thrift, the energy consumption has also been practiced thrift, the drying cabinet is more intelligent, it is more convenient to operate.

Description

Continuous sludge drying box

Technical Field

The utility model belongs to the technical field of sludge treatment equipment technique and specifically relates to a continuous type sludge drying case.

Background

Sludge heat drying is a safe and reliable way for treating sludge in large cities. It refers to a process of removing most of the water content from the sludge by percolation or evaporation, etc. After the sludge is subjected to heat drying, energy and substances can be recycled, and the possibility of returning harmful substances into the environment is reduced to the minimum extent.

Hot air of the existing sludge belt type drying box is usually fed from the bottom of a mesh belt, the hot air passes through the mesh belt layer by layer to heat sludge, and generated damp and hot steam is discharged from the top. Because the wet sludge has high water content and is not easy to form, the viscosity of the wet sludge is gradually increased along with the evaporation of water in the sludge, so that the hot air is difficult to pass through due to great wind resistance, a large amount of hot air can slip away from gaps at two sides of a mesh belt, the sludge does not fully and effectively exchange heat with the hot air due to the existence of the condition, and the drying efficiency is low; and moreover, because the wind resistance is high, the wind resistance also has great influence on the fan, so the mesh belt layer is generally provided with 1-3 layers, the drying amount is smaller, the relative drying area of the sludge is smaller, the drying time is shorter, and the requirement of drying to low water content cannot be met.

The existing sludge belt type drying box is usually required to be provided with a dust cleaning device independently, after the sludge drying is completed, the dust in the drying box is cleaned manually through the cleaning device, the equipment cost and the labor cost are high, and the energy consumption is high.

SUMMERY OF THE UTILITY MODEL

The applicant provides a rational in infrastructure continuous type sludge drying case to the shortcoming that above-mentioned current mud belt drying case exists, and mud fully produces the heat exchange with hot-blast effectively, and drying efficiency is high, and the stoving volume is big, and the stoving area is big, and the stoving time is long, can satisfy the requirement of drying to low moisture content, practices thrift equipment cost, cost of labor, practices thrift the energy consumption.

The utility model discloses the technical scheme who adopts as follows:

a continuous sludge drying box is provided with a feed inlet, a plurality of air outlets and a discharge outlet, wherein a plurality of layers of conveyor belts are arranged in the box body, the circulating rotation directions of the two adjacent layers of conveyor belts are opposite, an air equalizing channel is arranged above the conveyor belts, and a plurality of air blowing ports are arranged on the air equalizing channel; a mud receiving plate is arranged below the lowermost conveyer belt, and a space is reserved between the mud receiving plate and the conveyer belt; a plurality of mud scrapers are arranged on the surface of the lowermost conveyor belt at intervals.

As a further improvement of the above technical solution:

one end of the mud receiving plate is connected with the discharge port, the other end of the mud receiving plate is provided with an arc plate section, and the arc plate section is coated outside the driven end of the lowermost conveyor belt; the free end edge of the arc plate segment is higher than the upper side surface of the conveyor belt.

A gap is arranged between the mud scraping plate and the mud receiving plate.

An air equalizing channel is arranged above each layer of conveyor belt.

The air blowing port of the air equalizing channel is provided with a closing section, and the caliber of the closing section gradually shrinks along the air supply direction.

One end of each layer of conveying belt is provided with a driving speed reducer, and the other end of each layer of conveying belt is provided with a tensioning roller; the driving ends of two adjacent layers of conveying belts are arranged on two opposite sides, and the driving speed reducer of each layer of conveying belt is arranged at the beginning of the sludge conveying advancing direction of each layer.

The feeding hole is positioned above the driven end of the uppermost layer of the conveying belt, and the discharging hole is positioned obliquely below the driving end of the lowermost layer of the conveying belt; the adjacent two layers of conveyor belts are arranged in a staggered manner, and the driven end of the next layer of conveyor belt is horizontally and outwards deviated relative to the driving end of the adjacent upper layer of conveyor belt.

A mudguard is arranged between the two adjacent layers of conveyor belts and above the driven end of the lower layer of conveyor belt.

The discharge gate downward sloping sets up, and the discharge gate inboard is provided with the weather strip.

The periphery of the box body is wrapped with an insulation board.

The utility model has the advantages as follows:

the utility model discloses a mud scraper has utilized the conveying power of conveyer belt indirectly as dust clearance piece, in sludge drying process, automatic dust that continuously docks on the mud scraper is cleared up, after sludge drying accomplishes, the dust is also cleared up together, need not clear up the drying cabinet through cleaning device by the manual work again, this drying cabinet need not be equipped with dust cleaning device again alone promptly, equipment cost and cost of labor have been practiced thrift, the energy consumption has also been practiced thrift, the drying cabinet is more intelligent, it is more convenient to operate.

The utility model discloses the free end edge of the arc board section that connects the mud board is a little higher than the conveyer belt on the side surface, does benefit to the dust that connects on the mud board on all being scraped the area to the conveyer belt by the mud board, prevents that the dust from running out from connecing the mud board, and the dust clearance effect is better.

The utility model discloses all be provided with an air-equalizing channel above every layer of conveyer belt respectively, mud on every layer of conveyer belt is by corresponding air-equalizing channel directly from last to blowing hot-blast drying down, the hot-blast temperature that every layer of air-equalizing channel was blown is unanimous, the difference in temperature of hot-blast and mud is big, wet mud directly contacts with the hot-blast of blowing fast, the heat exchange efficiency between mud and the hot-blast is high, mud is heated and is heated up more fast, especially the mud of upper conveyer belt, mud has just come in from the feed inlet, the temperature is lower, the difference in temperature is bigger, heat exchange efficiency is higher; moreover, because each layer of conveying belt is provided with the air equalizing channel, hot air is directly supplied from the upper part of the sludge and the conveying belt, the wind resistance of the sludge and the conveying belt to the hot air is small, the design of the layer number of the conveying belt is not limited by the wind resistance, more layers of conveying belts can be designed, larger sludge drying amount can be obtained in unit time, larger drying area and longer relative drying time of the sludge in the drying box can be obtained, and the requirement of drying to low water content can be met; for traditional bottom air supply, the single heat transfer of top air-out, the wind that every layer of equal wind passageway blew out forms the circulated air in the box, and the mud that can many each layer conveyer belt carries out layering cross drying, and hot-blast manifold cycles and mud heat transfer in the box, the heat transfer is more abundant, and heat exchange efficiency is higher.

The utility model discloses an oral area of mouth of blowing has the closing section, produces the throttle when hot-blast flow through the closing section, and at the wind pressure effect, the air-out speed of mouth of blowing is accelerated, and on the mud was sent with higher speed to hot-blast blowing, the evaporation rate of mud surface moisture had been speeded up more, and drying efficiency is higher.

The utility model discloses every layer of conveyer belt is driven by independent drive speed reducer, can adjust the circulation rotational speed of each layer alone according to the change of mud moisture evaporation capacity, and the operation is more nimble, also does benefit to the improvement stoving effect. The drive speed reducer of every layer of conveyer belt sets up at the beginning of every layer of mud conveying direction of advance, more does benefit to drive speed reducer drive conveyer belt and slowly drags mud forward, drags speed control and adjustment more easily, makes the mud on every layer of conveyer belt be in the state of relative static stoving, avoids producing the friction between conveyer belt surface and the mud as far as, avoids the production of dust, improves the life of drying cabinet.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is an enlarged view of a portion a in fig. 1.

Fig. 3 is an enlarged view of a portion B in fig. 1.

In the figure: 1. a box body; 2. a feed inlet; 3. an air outlet; 4. a discharge port; 5. a conveyor belt; 6. a wind equalizing channel; 7. an air blowing port; 71. a mouth-closing section; 8. driving a speed reducer; 9. a tensioning roller; 10. a fender; 11. a mud receiving plate; 111. an arc plate section; 12. a mud scraper; 13. a weather strip.

Detailed Description

The following describes embodiments of the present invention with reference to the drawings.

As shown in figure 1, the utility model discloses a feed inlet 2 and a plurality of air exit 3 have been seted up on 1 top surface of box, and discharge gate 4 has been seted up to 1 side of box, and the setting of discharge gate 4 downward sloping does benefit to the mud ejection of compact. A plurality of layers of conveyor belts 5 are sequentially arranged in the box body 1 from top to bottom, an air equalizing channel 6 is arranged above each layer of conveyor belt 5, a plurality of air blowing openings 7 are formed in the air equalizing channel 6, and the air equalizing channel 6 is communicated with a hot air conveying air duct (not shown in the figure).

As shown in fig. 1, one end of each layer of conveyor belt 5 is provided with a driving reducer 8 to form a driving end, the other end of each layer of conveyor belt 5 is provided with a tensioning roller 9 to form a driven end, the circular rotation of the conveyor belt 5 is driven by the driving reducer 8 at the driving end, the tensioning degree of the conveyor belt 5 is adjusted by the tensioning roller 9 at the driven end, and the circular rotation directions (i.e. sludge conveying directions) of the adjacent two layers of conveyor belts 5 are opposite; every layer of conveyer belt 5 is driven by independent drive speed reducer 8, can adjust the circulation rotational speed of each layer alone according to the change of mud moisture evaporation capacity, and the operation is more nimble, also does benefit to and improves the stoving effect. Every layer of 5 drive speed reducer 8 of conveyer belt sets up at the beginning of every layer of mud conveying direction of advance, more does benefit to 8 drive conveyer belts of drive speed reducer 5 and drags mud forward slowly, drags speed control and adjustment more easily, makes the mud on every layer of conveyer belt 5 be in the state of relative static stoving, avoids producing the friction between 5 surfaces of conveyer belt and the mud as far as, avoids the production of dust, improves the life of drying cabinet. The driving ends of two adjacent layers of conveying belts 5 are arranged on two opposite sides, the feeding port 2 is positioned above the driven end of the uppermost layer of conveying belt 5, and the discharging port 4 is positioned obliquely below the driving end of the lowermost layer of conveying belt 5. The two adjacent layers of the conveyor belts 5 are arranged in a staggered manner, and the passive end of the next layer of the conveyor belt 5 is outwards offset for a certain horizontal distance relative to the driving end of the adjacent previous layer of the conveyor belt 5, so that the next layer of the conveyor belt 5 is ensured to completely receive the sludge conveyed by the previous layer; a mudguard 10 is arranged between the two adjacent layers of conveyor belts 5 and above the passive end of the lower layer of conveyor belt 5, and the mudguard 10 can intercept all the sludge sent by the upper layer of conveyor belt 5 to the lower layer of conveyor belt 5 to prevent the sludge from falling from the conveyor belt 5 and depositing to the bottom of the box body 1.

As shown in FIG. 1, a mud receiving plate 11 is arranged below the lowest layer of the conveyor belt 5, a space is reserved between the mud receiving plate 11 and the conveyor belt 5, and the mud receiving plate 11 can receive dust falling from a plurality of layers of the conveyor belt 5 above the mud receiving plate 11. As shown in fig. 1 and fig. 2, a plurality of mud scrapers 12 are arranged on the surface of the lowermost conveyor belt 5 at intervals, the mud scrapers 12 are vertically arranged on the surface of the conveyor belt 5, a gap is formed between the vertical outer side edge of the mud scrapers 12 and the mud receiving plate 11, the mud scrapers 12 can scrape and bring dust on the mud receiving plate 11 onto the conveyor belt 5 in the process of circulating movement along with the layer of conveyor belt 5, and the dust slides down from the discharge port 4 along with sludge, namely the mud scrapers 12 are used as dust cleaning members, the transmission power of the conveyor belt 5 is indirectly utilized, the dust on the mud collecting plate 11 is automatically and continuously cleaned in the sludge drying process, the dust is cleaned together after the sludge drying is completed, the drying box does not need to be cleaned manually through a cleaning device, namely the drying box does not need to be provided with a dust cleaning device independently, the equipment cost and the labor cost are saved, the energy consumption is also saved, the drying box is more intelligent, and the operation is more convenient. One end of the mud receiving plate 11 is connected with the discharge hole 4, so that dust on the mud receiving plate 11 is prevented from running out of the mud receiving plate 11, falling and depositing at the bottom of the box body 1. Connect 11 other ends of mud board to bend out upwards to have arc board section 111, arc board section 111 cladding is in this layer of 5 passive ends outsides of conveyer belt, as shown in fig. 2, the free end edge of arc board section 111 is slightly higher than 5 side surfaces on the conveyer belt, does benefit to and connects the dust on the mud board 11 on whole to be scraped by mud board 12 and takes conveyer belt 5, prevents that the dust from running out on connecing mud board 11, and dust cleaning effect is better.

As shown in fig. 1, an air equalizing channel 6 is respectively arranged above each layer of conveyor belt 5, sludge on each layer of conveyor belt 5 is directly blown by hot air from top to bottom through the corresponding air equalizing channel 6 for drying, the temperature of the hot air blown by each layer of air equalizing channel 6 is consistent, the temperature difference between the hot air and the sludge is large, wet sludge is directly and quickly contacted with the blown hot air, the heat exchange efficiency between the sludge and the hot air is high, the sludge is heated and heated more quickly, particularly, the sludge of the upper layer of conveyor belt 5 just enters from a feed port 2, the temperature is lower, the temperature difference is larger, and the heat exchange efficiency is higher; moreover, because each layer of the conveyor belt 5 is provided with the air equalizing channel 6, hot air is directly supplied from the upper part of the sludge and the conveyor belt 5, the wind resistance of the sludge and the conveyor belt 5 to the hot air is small, the design of the number of layers of the conveyor belt 5 is not limited by the wind resistance, more layers of the conveyor belts 5 can be designed, larger sludge drying amount can be obtained in unit time, larger drying area and longer relative drying time of the sludge in the drying box can be obtained, and the requirement of drying to low water content can be met; for the single heat transfer of traditional bottom air supply, top air-out, the wind that every layer of equal wind passageway 6 blew out forms circulated air in box 1, can carry out layering cross drying by the mud of each layer conveyer belt 5 more, and hot-blast manifold cycles and mud heat transfer in box 1, and the heat transfer is more abundant, and heat exchange efficiency is higher.

As shown in fig. 3, the mouth of each air blowing port 7 of the air equalizing channel 6 has a closing section 71, the caliber of the closing section 71 gradually shrinks along the air supply direction, the hot air generates throttling when flowing through the closing section 71, the air outlet speed of the air blowing port 7 is accelerated under the action of the air pressure, the hot air is blown to the sludge at an accelerated speed, the evaporation rate of the moisture on the surface of the sludge is accelerated, and the drying efficiency is higher.

As shown in fig. 1, a wind shielding strip 13 is arranged inside the discharge port 4 to prevent air leakage.

The periphery of the box body 1 is wrapped and sealed with a heat insulation plate for heat insulation, so that heat loss is prevented.

Adopt the utility model discloses when drying to mud, the stoving process divide into two parts: a sludge action part and a hot air flowing part.

A sludge action part: wet sludge enters from the feed inlet 2, is flatly laid on the braided conveyor belt 5, the conveyor belt 5 is dragged by the driving speed reducer 8, the sludge slowly moves forwards, the driven end of the lower layer of the conveyor belt 5 falls at the drive end of the conveyor belt 5, and the sludge reciprocates and slides out from the bottom discharge port 4.

A hot air flowing part: hot air is sent into the air equalizing channel 6 through the air channel, the hot air is pressed to be uniformly dispersed and blown to the upper surface of the tiled sludge through the air blowing port 7, air flow flows transversely, the surface of wet sludge on the conveying belt 5 is heated and quickly evaporated, and generated water vapor flows along with the hot air and is discharged from the air outlet 3.

The above description is illustrative of the present invention and is not intended to limit the present invention, and the present invention may be modified in any manner without departing from the spirit of the present invention.

Claims

1. The utility model provides a continuous type sludge drying oven, sets up feed inlet (2), a plurality of air exit (3), discharge gate (4) on box (1), sets up a plurality of layers of conveyer belt (5) in box (1), and the circulation of adjacent two-layer conveyer belt (5) rotates opposite direction, its characterized in that: an air equalizing channel (6) is arranged above the conveyor belt (5), and a plurality of air blowing openings (7) are formed in the air equalizing channel (6);

a mud receiving plate (11) is arranged below the lowest layer of the conveyor belt (5), and a space is reserved between the mud receiving plate (11) and the conveyor belt (5); a plurality of mud scrapers (12) are arranged on the surface of the lowermost layer conveyor belt (5) at intervals.

2. The continuous sludge drying oven according to claim 1, wherein: one end of the mud receiving plate (11) is connected with the discharge hole (4), the other end of the mud receiving plate (11) is provided with an arc plate section (111), and the arc plate section (111) is coated on the outer side of the driven end of the lowermost conveyor belt (5); the free end edge of the arc plate segment (111) is higher than the upper side surface of the conveyor belt (5).

3. The continuous sludge drying oven according to claim 1, wherein: a gap is arranged between the mud scraping plate (12) and the mud receiving plate (11).

4. The continuous sludge drying oven according to claim 1, wherein: an air equalizing channel (6) is respectively arranged above each layer of the conveyor belt (5).

5. The continuous sludge drying oven according to claim 1, wherein: the mouth part of the air blowing port (7) of the air equalizing channel (6) is provided with a closing section (71), and the caliber of the closing section (71) gradually shrinks along the air supply direction.

6. The continuous sludge drying oven according to claim 1, wherein: one end of each layer of the conveyor belt (5) is provided with a driving speed reducer (8), and the other end is provided with a tensioning roller (9); the driving ends of two adjacent layers of conveying belts (5) are arranged on two opposite sides, and the driving speed reducer (8) of each layer of conveying belt (5) is arranged at the beginning of the conveying advancing direction of each layer of sludge.

7. The continuous sludge drying oven according to claim 1, wherein: the feeding hole (2) is positioned above the driven end of the uppermost layer of the conveyor belt (5), and the discharging hole (4) is positioned obliquely below the driving end of the lowermost layer of the conveyor belt (5); the two adjacent layers of the conveyor belts (5) are arranged in a staggered mode, and the driven end of the next layer of the conveyor belt (5) is horizontally and outwards offset relative to the driving end of the adjacent upper layer of the conveyor belt (5).

8. The continuous sludge drying box according to claim 1, wherein: a mudguard (10) is arranged between the two adjacent layers of the conveyor belts (5) and above the passive end of the lower layer of the conveyor belt (5).

9. The continuous sludge drying oven according to claim 1, wherein: the discharge port (4) is arranged in a downward inclined way, and a wind shielding strip (13) is arranged on the inner side of the discharge port (4).

10. The continuous sludge drying oven according to claim 1, wherein: the periphery of the box body (1) is wrapped with an insulation board.