CN209815931U

CN209815931U - Activated sludge drying device

Info

Publication number: CN209815931U
Application number: CN201920053933.5U
Authority: CN
Inventors: 李建光
Original assignee: Shenzhen Hongda Environment Technology Co Ltd
Current assignee: Shenzhen Hongda Environment Technology Co Ltd
Priority date: 2019-01-12
Filing date: 2019-01-12
Publication date: 2019-12-20
Anticipated expiration: 2029-01-12

Abstract

The utility model provides an activated sludge drying device, including feed mechanism, forming mechanism, mummification mechanism and the shedding mechanism who arranges in proper order. The forming mechanism comprises two forming hot rollers with opposite rotating directions, the two forming hot rollers are spaced at a preset distance, and the feeding mechanism conveys the activated sludge to the forming mechanism and extrudes the activated sludge through the two forming hot rollers to form flaky sludge cakes; the drying mechanism comprises a drying transmission machine and a drying hot roller which is used for heating the drying transmission machine and driving the drying transmission machine to rotate, one end of the drying transmission machine is located below the forming mechanism, the other end of the drying transmission machine corresponds to the feeding end of the discharging mechanism, the sheet mud cake is conveyed to the discharging mechanism after being dried by the drying hot roller through the drying transmission machine, and the sheet mud cake is output by the discharging end of the discharging mechanism.

Description

Activated sludge drying device

Technical Field

The utility model relates to a sludge treatment equipment field, concretely relates to active sludge drying device.

Background

In the sewage treatment process, a large amount of activated sludge is generated, and the water content of the activated sludge is more than 90 percent and even reaches as high as 99 percent. Since the activated sludge having a high water content is difficult to transport and store and further causes diffusion of pollution, the water content of the activated sludge is reduced and the volume thereof is reduced. At present, the method for batch treatment of activated sludge is generally a physical method and a biochemical method, and the physical method is generally drying treatment, namely sludge cake is formed by concentration, dehydration and drying, so as to remove most of water contained in the activated sludge, and then slag is subjected to harmless treatment or is converted into other uses. In the primary treatment process, the water content of the activated sludge is usually reduced to 96% by adopting gravity sedimentation, then the activated sludge is dehydrated to about 80% by adopting a screw-overlapping dehydration mechanism or a belt-type dehydration mechanism, and the activated sludge is required to be quenched and tempered or subjected to filter pressing by adopting a tympanic membrane type filter pressing mechanism after continuous dehydration. At present, the water content of the treated activated sludge is 50-60%, obviously, the water content is still large, and the volume reduction effect is not obvious.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at provides an activated sludge drying device to solve among the prior art to the poor problem of reduction activated sludge moisture content effect, can further reduce activated sludge's moisture content, it is obvious to subtract the volume effect.

In order to achieve the aim, the utility model provides an activated sludge drying device, which comprises a feeding mechanism, a forming mechanism, a drying mechanism and a discharging mechanism which are arranged in sequence along the conveying direction; the forming mechanism comprises two forming hot rollers with opposite rotating directions, the two forming hot rollers are spaced at a preset distance, and the feeding mechanism conveys the activated sludge to the forming mechanism and extrudes the activated sludge through the two forming hot rollers to form flaky sludge cakes; the drying mechanism comprises a drying transmission machine and a drying hot roller which is used for heating the drying transmission machine and driving the drying transmission machine to rotate, one end of the drying transmission machine is located below the forming mechanism, the other end of the drying transmission machine corresponds to the feeding end of the discharging mechanism, the flaky mud cake is transmitted to the discharging mechanism after being dried by the drying hot roller through transmission of the drying transmission machine, and the flaky mud cake is output by the discharging end of the discharging mechanism.

Further, the feeding mechanism comprises a feeding transmission machine and a sludge collecting tank, and the low-level end of the feeding transmission machine is positioned in the sludge collecting tank to excavate and convey activated sludge in the sludge collecting tank.

Further, it is characterized in that the two shaping hot rolls are spaced apart by a predetermined distance in the range of 0.1 to 10mm and at a temperature in the range of 30 to 60 ℃.

Furthermore, the discharging mechanism comprises a discharging driver and a receiving groove, one end of the discharging driver corresponds to the receiving groove, and the other end of the discharging driver corresponds to a discharging port of the drying mechanism.

The activated sludge drying device is further characterized by also comprising baffles, wherein the baffles comprise a first baffle and a second baffle; the first baffle is arranged between the high-position end of the feeding transmission machine and the forming mechanism, and the first baffle forms a conveying channel for conveying the activated sludge from the feeding transmission machine to the forming mechanism; the second baffle is arranged between the drying mechanism and the feeding end of the discharging transmission machine, and the second baffle forms a conveying channel for conveying the flaky mud cakes from the drying mechanism to the discharging transmission machine.

Furthermore, the feeding transmission machine, the drying transmission machine and the discharging transmission machine respectively comprise a driving motor and a track, the driving motor drives the track to circularly operate, and a plurality of conveying pieces for conveying activated sludge are arranged on a belt body of the track.

Furthermore, a plurality of drying hot rollers are provided, and the track of the drying transmission machine is sleeved on the plurality of drying hot rollers in a tensioning manner.

Furthermore, the drying mechanism also comprises a temperature control room, and the drying transmission machine penetrates through the temperature control room.

Further, the drying hot roller comprises a front drying hot roller and a rear drying hot roller, the front drying hot roller is positioned outside the temperature control room, the rear drying hot roller is positioned in the temperature control room, the temperature range of the front drying hot roller is 40-80 ℃, and the temperature range of the rear drying hot roller is 40-60 ℃.

Use the technical scheme of the utility model, the active sludge who the staff will collect is thrown and is thrown to the mud collecting vat, opens the feed driving machine, and driving motor drives the track circulation and rotates, and the conveying piece conveys active sludge to forming mechanism along with the rotation of track and carries out through the slice mud cake that shaping hot-roll extrusion formed thickness scope is 0.1-10 mm. The flaky mud cake is heated and dried through a drying hot roller under the belt transmission action of a drying transmission machine, and finally is transmitted to a receiving tank through an unloading transmission machine. It is right the utility model discloses an in the application of technical scheme, forming process, mummification process make the moisture in the activated sludge form gas evaporation through the input heat to this moisture content with activated sludge falls to below 30%, by a wide margin reduced activated sludge's volume.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic view showing the overall structure of an embodiment of the activated sludge drying apparatus of the present invention.

Wherein the figures include the following reference numerals:

10. a feeding mechanism; 11. a feeding transmission machine; 12. a sludge collection tank; 20. a molding mechanism; 30. a drying mechanism; 31. a drying transmission machine; 32. drying the hot roller; 33. a temperature control room; 40. a discharge mechanism; 41. a discharging transmission machine; 42. a receiving groove; 51. a first baffle plate; 52. a second baffle; 61. a drive motor; 62. a crawler belt; 63. a conveying member.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

Exemplary embodiments according to the present application will now be described in more detail with reference to the accompanying drawings. Referring to fig. 1, the present invention provides an activated sludge drying apparatus, including: the feeding mechanism 10, the forming mechanism 20, the drying mechanism 30 and the discharging mechanism 40 are arranged in sequence; the forming mechanism 20 comprises two forming hot rollers which are spaced by a preset distance and rotate in opposite directions, and the feeding mechanism 10 conveys the activated sludge to the forming mechanism 20 and extrudes the activated sludge through the two forming hot rollers to form a flaky mud cake; the drying mechanism 30 comprises a drying transmission machine 31 and a drying hot roller 32, the drying transmission machine 31 is heated and drives the drying transmission machine 31 to rotate, one end of the drying transmission machine 31 is located below the forming mechanism 20, the other end of the drying transmission machine 31 corresponds to the feeding end of the discharging mechanism 40, the flaky mud cake is dried through the drying hot roller 32 by transmission of the drying transmission machine 31 and then conveyed to the discharging mechanism 40, and the flaky mud cake is output by the discharging end of the discharging mechanism 40.

Specifically, the feeding mechanism 10 includes a feeding driving machine 11 and a sludge collecting tank 12, a low end of the feeding driving machine 11 is located in the sludge collecting tank 12 to excavate and convey the activated sludge in the sludge collecting tank 12, and a high end corresponds to the forming mechanism. The sludge collection tank 12 is in any shape which is stably placed on a horizontal plane, and preferably, the sludge collection tank 12 is provided as a groove with a rectangular cross section. The sludge collected by the sludge collection tank 12 is block-shaped or granular sludge with the water content of below 60%, namely activated sludge with high water content after gravity settling, dehydration, filter pressing and other actions.

Further, the discharging mechanism 40 includes a discharging actuator 41 and a receiving groove 42, and a discharging end of the discharging actuator 41 corresponds to the receiving groove 42, and the other end corresponds to the drying mechanism 30. The dried sheet sludge is conveyed to the feeding end of the discharge driver 41 by the drying driver 31, and then conveyed to the receiving tank 42 by the discharge driver 41. In the unloading and conveying process, the flaky sludge is contacted with the outside air for cooling so as to facilitate the subsequent treatment work of the workers.

The feeding conveyor 11, the drying conveyor 31 and the discharging conveyor 41 all comprise two driving motors 61 and one crawler belt 62, preferably, the two driving motors 61 and the one crawler belt 62 are arranged on the two driving motors 61 in a tensioning and encircling manner, the belt body of the crawler belt 62 is provided with a plurality of conveying members 63, and preferably, the plurality of conveying members 63 are uniformly arranged on the belt body of the crawler belt 62. When the activated sludge drying device works, the feeding driver 11, the drying driver 31 and the discharging driver 41 are correspondingly started, the driving motor 61 operates to drive the caterpillar belt 62 to rotate, and the conveying piece 63 carries out conveying work along with the transmission of the caterpillar belt 62, so that a series of corresponding conveying work of activated sludge from the feeding mechanism 10 to the discharging mechanism 40 is realized.

Preferably, the activated sludge drying device further comprises baffles, wherein the baffles comprise a first baffle 51 and a second baffle 52; the first baffle 51 is arranged between the high-level end of the feeding transmission machine 11 and the forming mechanism 20 to form a conveying channel of the activated sludge from the feeding transmission machine 11 to the forming mechanism 20; the second baffle plate 52 is arranged between the drying mechanism 30 and the feeding end of the discharging driver 41, and forms a conveying channel for the sheet-shaped mud cakes from the drying driver 31 to the forming mechanism 20. The arrangement of the baffle plate determines a conveying channel of the activated sludge drying device during working, and ensures accurate delivery of activated sludge among mechanisms.

The technical scheme of the utility model receiving activated sludge from the feed mechanism earlier before carrying out the mummification effect to activated sludge and extrudeing and form slice mud cake, forming mechanism 20 includes two interval predetermined distances and opposite direction of rotation's shaping hot-rollers, and the thickness of the slice mud cake that forms through the extrusion of shaping hot-rollers is 0.1-10mm, and the interval predetermined distance scope between two shaping hot-rollers is 0.1-10mm promptly. The heating area of the activated sludge with the same volume is increased, the heating thickness is reduced and the drying efficiency of the activated sludge in the drying mechanism 30 is improved by extruding the activated sludge; the forming hot roller extrudes the activated sludge into a flaky sludge cake and inputs heat to heat and evaporate part of water in the activated sludge. The drying mechanism 30 comprises a drying transmission machine 31 and a plurality of drying hot rollers 32, and the track of the drying transmission machine 31 is sleeved on the plurality of drying hot rollers 32 in a tensioning manner. Preferably, the drying heat roll 32 includes a front-end drying heat roll and a rear-end drying heat roll, the temperature range of the front-end drying heat roll is 40-80 ℃, and the temperature range of the rear-end drying heat roll is 40-60 ℃. The drying transmission machine 31 conveys the flaky mud cakes received from the forming mechanism 20 to a drying hot roller 32, the moisture contained in the flaky mud cakes is heated and evaporated through the high-temperature drying action of the front-end drying hot roller and the rear-end drying hot roller, and then the flaky mud cakes are conveyed to the discharging mechanism 40. The temperature difference of the front-end drying hot roller and the rear-end drying hot roller is set to ensure high-efficiency heat utilization rate, and the output of heat is reduced while the sheet mud cake is fully dried.

The drying mechanism 30 further comprises a temperature control room 33, preferably, the temperature control room 33 is rectangular, and the drying transmission machine 31 penetrates through the temperature control room 33. In order to smoothly carry out the conveying and drying functions of the flaky mud cakes, one end of the drying transmission machine 31 is positioned below the forming mechanism 20 to receive the flaky mud cakes, and the other end corresponds to the feeding end of the discharging mechanism 40. Preferably, the heating mode of the forming hot roller and the drying hot roller 32 is heat-conducting oil heating, the heat-conducting oil heating mode enables all the hot rollers to be heated uniformly, the heat transfer effect is good, and the heating temperature of all the hot rollers can be conveniently and accurately controlled in the temperature control room.

Application the technical scheme of the utility model, before carrying out the mummification to mud, extrude activated sludge through forming mechanism 20 and form slice mud cake, increased activated sludge and in the heated area under the mummification hot-rolling 32's mummification effect, reduced the thickness of being heated of mud cake, improved mummification efficiency. The utility model discloses an input heat makes the moisture in the mud be heated and evaporates, by a wide margin reduced activated sludge's moisture content, reached the effect of subtracting the volume to activated sludge.

The direction in which the respective arrows are arranged in sequence in fig. 1 is the transport direction of the activated sludge starting from the sludge collection tank 12 and proceeding backward.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An activated sludge drying device, which is characterized by comprising: the feeding mechanism (10), the forming mechanism (20), the drying mechanism (30) and the discharging mechanism (40) are sequentially arranged along the conveying direction;

the forming mechanism (20) comprises two forming hot rollers with opposite rotating directions, the two forming hot rollers are spaced by a preset distance, and the feeding mechanism (10) conveys the activated sludge to the forming mechanism (20) and extrudes the activated sludge through the two forming hot rollers to form a flaky mud cake; mummification mechanism (30) include mummification driver (31) and do mummification driver (31) heating and drive mummification driver (31) pivoted mummification hot-rolling (32), the one end of mummification driver (31) is located the below of forming mechanism (20), the other end of mummification driver (31) with the material loading end of shedding mechanism (40) is corresponding, the slice mud cake warp mummification driver (31) transmission passes through carry behind mummification hot-rolling (32) mummification unloading mechanism (40), the slice mud cake is exported by the discharge end of shedding mechanism (40).

2. The activated sludge drying device as claimed in claim 1, wherein the feeding mechanism (10) comprises a feeding driver (11) and a sludge collecting tank (12), and the lower end of the feeding driver (11) is located in the sludge collecting tank (12) to excavate and convey the activated sludge in the sludge collecting tank (12).

3. The activated sludge drying apparatus as claimed in claim 2, wherein the predetermined distance between the two shaping hot rolls is in the range of 0.1-10 mm.

4. The activated sludge drying device as claimed in claim 3, wherein the discharging mechanism (40) comprises a discharging driver (41) and a receiving groove (42), one end of the discharging driver (41) corresponds to the receiving groove (42), and the other end of the discharging driver (41) corresponds to the discharging port of the drying mechanism (30).

5. The activated sludge drying device according to claim 4, further comprising a baffle plate, wherein the baffle plate comprises a first baffle plate (51) and a second baffle plate (52);

the first baffle (51) is arranged between the high-level end of the feeding transmission machine (11) and the forming mechanism (20), and the first baffle (51) forms a conveying channel for conveying activated sludge from the feeding transmission machine (11) to the forming mechanism (20);

the second baffle (52) is arranged between the drying mechanism (30) and the feeding end of the discharging transmission machine (41), and the second baffle (52) forms a conveying channel for conveying the flaky mud cakes to the discharging transmission machine (41) from the drying mechanism (30).

6. The activated sludge drying device according to claim 5, wherein the feeding conveyor (11), the drying conveyor (31) and the discharging conveyor (41) comprise a driving motor (61) and a track (62), the driving motor (61) drives the track (62) to rotate circularly, and the body of the track (62) is provided with a plurality of conveying members (63) for conveying activated sludge.

7. The activated sludge drying device as claimed in claim 6, wherein the drying heat roller (32) is plural, and the track of the drying conveyor (31) is tightly sleeved on the drying heat roller (32).

8. The activated sludge drying device according to claim 7, wherein the drying mechanism (30) further comprises a temperature control room (33), and the drying transmission machine (31) penetrates through the temperature control room (33).

9. The activated sludge drying apparatus as claimed in claim 8, wherein the drying heat roll (32) comprises a front drying heat roll and a rear drying heat roll, the front drying heat roll is located outside the temperature control room (33) and the rear drying heat roll is located inside the temperature control room (33).