CN209974588U

CN209974588U - Energy-saving sludge drying device

Info

Publication number: CN209974588U
Application number: CN201920672061.0U
Authority: CN
Inventors: 薛惠忠; 董世翔
Original assignee: WUXI AIMUDI ENVIRONMENTAL PROTECTION TECHNOLOGY Co Ltd
Current assignee: WUXI AIMUDI ENVIRONMENTAL PROTECTION TECHNOLOGY Co Ltd
Priority date: 2019-05-10
Filing date: 2019-05-10
Publication date: 2020-01-21
Anticipated expiration: 2029-05-10

Abstract

The utility model discloses an energy-saving sludge drying device belongs to drying equipment technical field. The utility model comprises a mesh belt sludge dryer and a tube type heat exchanger; the mesh belt sludge dryer comprises a frame body, a mesh belt transmission mechanism and a transmission mechanism; the top of the tube type heat exchanger is provided with a waste heat outlet; the area between the waste heat inlet and the top end of the heat exchanger is provided with a fresh air inlet and a fresh air outlet, and the inside of the heat exchanger is provided with a tube nest. The utility model adopts an internal circulation drying mode, has high heat utilization rate, saves energy and floor area; through setting up the shell and tube heat exchanger that has solar energy collection coating, greatly alleviateed the dependence to the fuel type energy, increased the utilization ratio of heat source, it is energy-concerving and environment-protective more.

Description

Energy-saving sludge drying device

Technical Field

The utility model relates to an energy-saving sludge drying device belongs to drying equipment technical field.

Background

The industrial sludge refers to sludge generated by an industrial wastewater treatment station, and the drying of the industrial sludge mainly comprises modes of percolation or evaporation and the like. The common sludge drying equipment can achieve a certain drying effect, but has the defects of long sludge drying time, large equipment floor area and the like. The traditional sludge drying equipment adopts hot air generated by a coal-fired hot air furnace as a drying heat source, and has higher cost. In the process of drying the sludge, hot air for drying the sludge can take away moisture and leave the drying equipment with heat, and introduced fresh air needs heat energy to heat the hot air. If the waste heat energy source of the drying device is not fully utilized, a large amount of energy is wasted.

SUMMERY OF THE UTILITY MODEL

The above-mentioned problem to prior art exists, the utility model provides an energy-saving sludge drying device to solve traditional dry energy utilization rate low, drying effect is poor, the easy adhesion scheduling problem of mud.

The energy-saving sludge drying device of the utility model comprises a mesh belt sludge dryer and a tubular heat exchanger; the mesh belt sludge dryer comprises a frame body, a mesh belt transmission mechanism and a transmission mechanism; the frame body is of a cubic support structure of the energy-saving sludge drying device, and a steel plate is arranged on the frame body; the transmission mechanism is fixed on the frame body through a fixing piece and drives the mesh belt transmission mechanism to move; the mesh belt transmission mechanism is provided with a plurality of groups, and each group of mesh belt transmission mechanism comprises a mesh belt, a bearing rod and a chain; two sides of the mesh belt are respectively fixed with the chains, and the bearing rods are vertically arranged between the opposite chains and used for supporting the mesh belt; two ends of each two adjacent mesh belt transmission mechanisms are staggered and have opposite movement directions; the shell and tube heat exchanger comprises a waste heat inlet arranged on the side wall near the bottom and connected with an air outlet of the mesh belt sludge dryer; the top of the tube type heat exchanger is provided with a waste heat outlet; the area between waste heat import and heat exchanger top sets up new trend import and new trend export, and the inside tubulation that sets up of heat exchanger, the tubulation sets up along vertical direction, and the top flushes with the highest position department of new trend export, and the below flushes with the highest position of waste heat import.

The utility model discloses an among the embodiment, new trend import and new trend export set up on same lateral wall.

The utility model discloses an in an embodiment, shell and tube heat exchanger lateral wall coating solar energy collection coating, solar energy collection coating includes but not limited to black chromium coating, black nickel coating, can high-efficient environmental protection utilize natural energy to carry out the hot-air heating.

In one embodiment of the present invention, the transmission mechanism includes a driving sprocket and a driven sprocket; the driving chain wheel and the driven chain wheel are arranged on the same horizontal plane and are connected through a chain; the driving chain wheel drives the driven chain wheel to rotate under the driving of the motor; a guide wheel is arranged between the driving chain wheel and the frame body; a slag trap is arranged above the driving chain wheel.

In one embodiment of the utility model, a flapping mechanism is arranged in the area between the upper and lower layers of chains of the first group of mesh belt transmission mechanism, and comprises a flapping plate and a rotating shaft; the rotating shaft is parallel to the bearing rod and is fixed on the frame body, and the rotating shaft is driven by a variable frequency motor; the beating plate is fixed on the rotating shaft and swings along the rotating shaft, and the swinging amplitude of the beating plate does not exceed the vertical distance between the upper layer of chain and the lower layer of chain of the mesh belt transmission mechanism.

The utility model discloses an among the embodiment, the length that sets up at the guipure transmission device of below is not less than all guipure transmission device along the projected length of vertical direction in the length of horizontal direction, still has the L shaped steel parallel with the bearing pole on the guipure, and the L shaped steel that is located on the guipure of lower floor does not just contact with the bottom.

In one embodiment of the present invention, the mesh belt transmission mechanism is provided with at least 5 sets; the projections of the two ends of the first group of mesh belt transmission mechanism and the third group of mesh belt transmission mechanism along the vertical direction are overlapped, and the projections of the two ends of the second group of mesh belt transmission mechanism and the fourth group of mesh belt transmission mechanism along the vertical direction are overlapped.

In an embodiment of the present invention, the chain is a ball chain.

The utility model has the advantages of as follows:

1. an internal circulation drying mode is adopted, so that the heat utilization rate is high, and energy and occupied area are saved;

2. by arranging the tube type heat exchanger, the heat of the damp and hot air is utilized to heat the fresh air, so that the utilization rate of energy is improved;

3. the solar heat collecting coating is arranged, so that solar energy is converted into heat energy, and the dependence on fuel type energy is greatly reduced;

4. the sludge is transmitted through the mesh belt with good air permeability, so that the materials do not move violently and are not easy to break;

5. the beating plate is arranged to peel off the sludge falling on the mesh belt from the mesh belt, so that the problem of adhesion of the sludge and the mesh belt is solved;

6. by improving the structure of the transmission mechanism and additionally arranging the guide wheel and the slag baffle, the problem that the chain wheel is easy to wear is solved; and the chain is replaced by a ball chain, so that the load of the motor is reduced, and the abrasion of the chain wheel is reduced.

Drawings

FIG. 1 is a schematic structural view of the energy-saving sludge drying device of the present invention,

FIG. 2 is a schematic structural view of a mesh belt transmission mechanism in the energy-saving sludge drying apparatus of the present invention;

FIG. 3 is a schematic structural view of a beating plate in the energy-saving sludge drying apparatus of the present invention;

FIG. 4 is a partial enlarged view of part A of the energy-saving sludge drying apparatus of the present invention;

FIG. 5 is a front view of the tube type heat exchanger of the energy-saving sludge drying apparatus of the present invention;

FIG. 6 is a left side view of the tube type heat exchanger of the energy-saving sludge drying apparatus of the present invention;

FIG. 7 is a cross-sectional view of the tube type heat exchanger of the energy-saving sludge drying device of the present invention;

wherein, 1, a frame body; 2, a mesh belt transmission mechanism; 3, a transmission mechanism; 4, a flapping mechanism; 5, a shell and tube heat exchanger; 11, an air outlet; 12, an air inlet; 21, a mesh belt; 22, a support rod; 23, a chain; 31, a drive sprocket; 32, a driven sprocket; 33, a motor; 34, a slag trap; 35, a guide wheel; 41, a rotating shaft; 42, beating the plate; 51, a fresh air outlet; 52, a waste heat inlet; 53, a waste heat outlet; 54, a fresh air inlet, 55 and a tube array.

Detailed Description

To achieve the above objects, features and advantages and in accordance with the purpose of the invention, as embodied and broadly described herein, the present invention will be described in detail with reference to the accompanying drawings.

As shown in fig. 1-7, the energy-saving sludge drying device of the present invention comprises a mesh belt sludge dryer and a tubular heat exchanger; the mesh belt sludge dryer comprises a frame body 1, a mesh belt transmission mechanism 2, a transmission mechanism 3 and a beating mechanism 4; the frame body 1 is of a cubic support structure of the energy-saving sludge drying device, and a steel plate is arranged on the frame body 1 to integrally seal the energy-saving sludge drying device; a plurality of parallel air outlets 51 are arranged at the upper part of the frame body 1, and an air inlet 52 is arranged right below each air outlet and near the bottom of the frame body; the transmission mechanism 3 comprises a driving chain wheel 31 and a driven chain wheel 32; the driving sprocket 31 and the driven sprocket 32 are arranged on the same horizontal plane and connected through a chain, and the driving sprocket 31 drives the driven sprocket 32 to rotate under the driving of a motor; a bracket of the shaft of the driving sprocket 31 is fixed on the frame body 1, and a guide wheel 35 is arranged between the driving sprocket 31 and the frame body 1, so that the abrasion and deviation of the driving sprocket 31 are avoided; a slag trap is arranged above the driving chain wheel 31, so that mud slag falling from the mud in the upper layer movement process is prevented from clamping the chain wheel or the chain; the flapping mechanism 4 comprises a flapping plate 42 and a rotating shaft 41; the rotating shaft 41 is parallel to the supporting rod 22 and fixed on the frame body 1; the beating plate 42 is fixed on the rotating shaft 41 and swings along the rotating shaft 41, and the swinging amplitude of the beating plate does not exceed the vertical distance between the upper layer of chain and the lower layer of chain of the mesh belt transmission mechanism; the side wall of the shell and tube heat exchanger 5 near the bottom is provided with a waste heat inlet 52 which is connected with the air outlet 12 of the mesh belt sludge dryer through a pipeline; the top of the tubular heat exchanger 5 is provided with a waste heat outlet 53 which can be connected with pipelines of subsequent process equipment such as a dust remover, a spray tower and the like; the fresh air inlet 54 and the fresh air outlet 51 are arranged in the area between the waste heat inlet 52 and the top end of the heat exchanger, the heat exchanger is internally provided with a tube array 55, the tube array 55 is arranged along the vertical direction, and the top of the tube array is flush with the highest position of the fresh air outlet 51; the lowermost of the tubes is flush with the uppermost position of the waste heat inlet 52.

Further, the fresh air inlet 54 and the fresh air outlet 51 are provided on the same side wall.

Further, the outer side wall of the tubular heat exchanger 5 is coated with a solar heat collecting coating, the solar heat collecting coating comprises but is not limited to a black chromium coating and a black nickel coating, and the hot air heating can be carried out by utilizing natural energy in an efficient and environment-friendly manner.

Further, the mesh belt transmission mechanisms 2 are arranged in a plurality of groups, and each group of mesh belt transmission mechanisms 2 comprises a mesh belt 21, a supporting rod 22 and a chain 23; two sides of the mesh belt 21 are respectively fixed with chains 23, and the supporting rods 22 are vertically arranged in the middle of the opposite chains 23 and used for supporting the mesh belt 21; two ends of every two adjacent mesh belt transmission mechanisms are staggered and have opposite movement directions, so that the projection of the sludge along the movement path of the mesh belts in the direction vertical to the transmission direction of the chain wheel is S-shaped.

Furthermore, the length of the mesh belt transmission mechanism arranged at the lowest position in the horizontal direction is not less than the length of the projection of all mesh belt transmission mechanisms above in the vertical direction, the mesh belt is also provided with L-shaped steel parallel to the bearing rod, and the L-shaped steel on the mesh belt positioned at the lower layer is just not contacted with the bottom.

Furthermore, the projections of the two ends of the first group of mesh belt transmission mechanisms and the projections of the two ends of the third group of mesh belt transmission mechanisms along the vertical direction are overlapped, and the projections of the two ends of the second group of mesh belt transmission mechanisms and the projections of the two ends of the fourth group of mesh belt transmission mechanisms along the vertical direction are overlapped.

Further, the chain is a ball chain, and compared with a traditional annular chain, the wear of the chain wheel is reduced, and the load of the motor is reduced.

Furthermore, the motor can be a variable frequency motor or connected with a speed reducer, so that the running speed of the mesh belt is realized by adjusting the running frequency of the motor.

Further, the rotating shaft is driven by a variable frequency motor.

The utility model discloses a theory of operation does: in a mesh belt dryer of the energy-saving sludge drying device, a chain wheel is driven by a motor 23 to rotate so as to drive a mesh belt 21 to move along the horizontal direction; the sludge falls onto the first group of mesh belt transmission mechanisms 2 from the material distributor, the beating plate 42 swings back and forth under the rotation of the rotating shaft 42, and the mesh belt 21 of the first group of mesh belt transmission mechanisms 2 is beaten, so that the sludge adhered to the mesh belt 21 is separated from the mesh belt 21; the sludge moves from the feed port to the tail end of the first group of mesh belt transmission mechanisms, falls on the second group of mesh belt transmission mechanisms under the action of gravity, moves to the tail end along with the second group of mesh belt transmission mechanisms, falls on the third group of mesh belt transmission mechanisms under the action of gravity, moves to the mesh belt transmission mechanism at the lowest layer according to the S-shaped path and is conveyed to the sludge outlet along with the mesh belt transmission mechanism at the lowest layer. The L-shaped steel arranged on the mesh belt at the lowest layer pushes small-particle sludge or sludge on the ground to move towards the discharge hole, and the sludge falling to the bottom is cleaned. In the process that the sludge moves along with the mesh belt, hot air is introduced from the air inlet 12 at the lower part, the hot air exchanges heat with wet sludge moving along with the mesh belt transmission mechanism to take away moisture of the wet sludge, and the wet air containing the moisture is discharged from the air outlet 11 at the upper part of the drying device under the action of the fan. The exhausted damp and hot air enters from a waste heat inlet 52 at the bottom of the heat exchanger, passes through the tubes and heats the tubes, and finally is exhausted from a waste heat outlet 53. Fresh air enters from the fresh air inlet 54 under the action of the pump, passes through the area where the tubes are located, and exits from the fresh air outlet 51. The side surface of the tube type heat exchanger is provided with a solar heat collecting coating, so that solar energy is absorbed and converted into heat energy, and the whole heat exchanger is kept at a higher temperature.

The protection scope of the present invention is not limited to the above embodiments, and any modifications, equivalent replacements, and improvements that can be made by a person skilled in the art within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The energy-saving sludge drying device is characterized by comprising a mesh belt sludge dryer and a tube type heat exchanger; the mesh belt sludge dryer comprises a frame body, a mesh belt transmission mechanism and a transmission mechanism; the frame body is of a cubic support structure of the energy-saving sludge drying device, and a steel plate is arranged on the frame body; the transmission mechanism is fixed on the frame body through a fixing piece and drives the mesh belt transmission mechanism to move; the mesh belt transmission mechanism is provided with a plurality of groups, and each group of mesh belt transmission mechanism comprises a mesh belt, a bearing rod and a chain; two sides of the mesh belt are respectively fixed with the chains, and the bearing rods are vertically arranged between the opposite chains and used for supporting the mesh belt; two ends of each two adjacent mesh belt transmission mechanisms are staggered and have opposite movement directions; the shell and tube heat exchanger comprises a waste heat inlet arranged on the side wall near the bottom and connected with an air outlet of the mesh belt sludge dryer; the top of the tube type heat exchanger is provided with a waste heat outlet; the area between waste heat import and heat exchanger top sets up new trend import and new trend export, and the inside tubulation that sets up of heat exchanger, the tubulation sets up along vertical direction, and the top flushes with the highest position department of new trend export, and the below flushes with the highest position of waste heat import.

2. The energy-saving sludge drying device of claim 1, wherein the fresh air inlet and the fresh air outlet are arranged on the same side wall.

3. The energy-saving sludge drying device according to claim 1, wherein the outer side wall of the tubular heat exchanger is coated with a solar heat collecting coating.

4. The energy saving sludge drying apparatus of claim 3 wherein the solar heat collecting coating comprises a black chrome coating or a black nickel coating.

5. The energy-saving sludge drying apparatus according to claim 1, wherein the transmission mechanism comprises a driving sprocket and a driven sprocket; the driving chain wheel and the driven chain wheel are arranged on the same horizontal plane and are connected through a chain; the driving chain wheel drives the driven chain wheel to rotate under the driving of the motor; a guide wheel is arranged between the driving chain wheel and the frame body; a slag trap is arranged above the driving chain wheel.

6. The energy-saving sludge drying device as claimed in claim 1, wherein a beating mechanism comprising a beating plate and a rotating shaft is arranged in the area between the upper and lower layers of chains of the first group of mesh belt transmission mechanism; the rotating shaft is parallel to the bearing rod and is fixed on the frame body, and the rotating shaft is driven by a variable frequency motor; the beating plate is fixed on the rotating shaft and swings along the rotating shaft, and the swinging amplitude of the beating plate does not exceed the vertical distance between the upper layer of chain and the lower layer of chain of the mesh belt transmission mechanism.

7. The energy-saving sludge drying device according to claim 1, wherein the mesh belt conveying mechanism is provided with at least 5 groups; the projections of the two ends of the first group of mesh belt transmission mechanism and the third group of mesh belt transmission mechanism along the vertical direction are overlapped, and the projections of the two ends of the second group of mesh belt transmission mechanism and the fourth group of mesh belt transmission mechanism along the vertical direction are overlapped.

8. The energy-saving sludge drying device according to claim 1 or 7, wherein the length of the mesh belt transmission mechanism arranged at the lowest position in the horizontal direction is not less than the length of the projection of all mesh belt transmission mechanisms arranged above in the vertical direction, the mesh belt is further provided with L-shaped steel parallel to the supporting rod, and the L-shaped steel on the mesh belt positioned at the lower layer is just not contacted with the bottom.

9. The energy-saving sludge drying apparatus according to claim 1, wherein the chain is a ball chain.