CN204803202U - Sludge drying device - Google Patents
Sludge drying device Download PDFInfo
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- CN204803202U CN204803202U CN201520024806.4U CN201520024806U CN204803202U CN 204803202 U CN204803202 U CN 204803202U CN 201520024806 U CN201520024806 U CN 201520024806U CN 204803202 U CN204803202 U CN 204803202U
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Abstract
The utility model provides a sludge drying device, it includes conveyor, quenching and tempering device, dewatering device and mummification machine, and the casing is drawn together to the mummification press packed bale, and the casing has the partition wall to become first drying chamber and secondary drying chamber with the space separation in the casing, and form the intercommunication mouth that is used for communicateing first drying chamber and secondary drying chamber on the partition wall. The setting is at the feed inlet on the upper portion of first drying chamber and the discharge gate on gas vent and the circumference wall of setting at first drying chamber. The air inlet of setting on the lateral wall of secondary drying chamber. The stir device of setting in first drying chamber, it includes the axis of rotation and sets up at the epaxial subassembly that stirs of rotation its mud that can strike off near intercommunication mouthful. The air -blast device, it is through air inlet and secondary drying chamber's intercommunication.
Description
Technical field
The utility model relates to sludge drying field, in particular to a kind of mud drying device, is used for the mud of dry water ratio about more than 90%, thus obtain water ratio about less than 40% mud.
Background technology
In modern city, the process of sewage is absolutely necessary, and can produce a large amount of mud along with the process of sewage.At present, sewage work generally adopts method that is concentrated or dehydration to carry out process in early stage to mud, the water ratio of mud is reduced to 60-80% from more than 90%, carries out landfill, solidification or drying and other treatment afterwards to processed mud.Landfill easily makes sludge fermentation and occurs the problem of secondary pollution environment, and existing solidification or the low and energy consumption of drying equipment usual mummification efficiency large, be difficult to realize also processing a large amount of mud while reduction moisture percentage in sewage sludge.Usually need the water ratio of mud to be reduced to 40-60% from more than 90% through multiple sludge handling process, and these sludge handling process are all unaided in each equipment.These sludge treatment devices have volume large, arrange the defects such as dispersion, function singleness and energy consumption are large.
Chinese invention patent application (CN101186422A) proposes a kind of enclosed multi-chamber fluidized bed drying method for sludge.The fluidized-bed adopted in this method not only consumes the energy and efficiency is very low, is difficult to realize continuously and large-scale sludge drying process.
Chinese utility model patent (CN203319838U) proposes a kind of sludge solidification processing agitator.This stirrer, by additive being blended in mud the water ratio reducing mud, not only increasing the amount of mud and is difficult to prevent mud after landfill from causing the problem of secondary pollution environment.Because mud has, viscosity is strong, the characteristic of easily caking, difficult fragmentation, existing sludge drying device be difficult to realize to this kind of mud carry out on a large scale drying and other treatment to reduce the water ratio of mud, and do not have a kind of equipment or device the mud of the water ratio more than 90% from sewage work can be converted into water ratio greatly about less than 40% mud.
Therefore, need to provide so a kind of mud drying device to realize above-mentioned purpose.
Summary of the invention
For the defect existed in prior art, the utility model proposes a kind of mud drying device integrated by various sludge treatment equipment.The water ratio of the mud from sewage work directly can be reduced to less than 40% from more than 90% by this mud drying device, to realize mud from liquid state, block, fragment, particle to the transformation of powder, and then improves the mummification efficiency of mud.
Utilize the e Foerderanlage in mud drying device, modifying device, dewatering unit, desiccation machine and air-blast device can carry out mummification to the liquid sludge of water ratio more than 90%, so that the water ratio of mud is reduced to about less than 40%, thus the mud that can not cause the granular of secondary sludge after landfill because of water logging can be obtained.In addition, preposition modifier treatment and concentration can be implemented in conjunction with preposition modifying device and concentrating unit with liquid towards mud in mud drying device of the present utility model, thus more moisture can be isolated from mud, carry out drying and other treatment by each device above-mentioned in mud drying device again through concentrated liquid sludge, thus the mud of granular can be obtained.
Utilize and be attached to the mud fragment that mud block that shredder assembly in mud drying device of the present utility model can be different by the size after dehydration is broken into size uniform, with the drying effect making mud reach balanced in drying process.
Utilize the blower unit, heating unit and the heat exchanger that are attached in mud drying device of the present utility model, mummification efficiency can be improved and save energy.
By be arranged on turning device in the first kiln of desiccation machine stir assembly stir and stir blade on assembly or ratchet to the shearing of mud and fragmentation, mud is contacted fully with dry gas, thus solve in mud exists in drying process, the problem that outside degree of drying is uneven, wherein, dry gas enters into the first kiln by the side opening being arranged on bridge above connected entrance or connected entrance that the partition wall for separating the first kiln and secondary drying chamber is formed and partition wall and being formed by secondary drying chamber, and, stir the blade of assembly or the front end of ratchet and the contact frequency not only increasing dry gas and mud is struck off to the mud near connected entrance or side opening, also promote mud to change from fragment to particulate state and granular, accelerate the drying of mud.
Mud drying device of the present utility model has that mummification efficiency is high, energy consumption is low, floor space is little and adaptable feature, sludge treatment equipment existing in sludge treatment equipment in mud drying device of the present utility model and sewage work can combine, to reduce costs by user as required.
The utility model the utility model provides a kind of mud drying device, and described mud drying device comprises the e Foerderanlage for receiving and carry mud; Modifying device, described modifying device is positioned at the downstream of described e Foerderanlage, and wherein in the future the described mud of self-conveying apparatus mix with adjusting material, to improve the dehydration property of described mud; Dewatering unit, the described mud from upstream dewaters by described dewatering unit, to reduce the water ratio of described mud; Desiccation machine, described desiccation machine comprises housing, and wherein, described housing has partition wall, so that the separated by spaces in described housing is become the first kiln and secondary drying chamber, and on described partition wall, form at least one connected entrance for being communicated with described first kiln and described secondary drying chamber; Be arranged on the opening for feed of the mud for wanting mummification and the venting port for the dry gas after dewatered sludge on the top of described first kiln, and be arranged on the discharge port for the mud after mummification on the circumferential wall of described first kiln; Be arranged at least one on the sidewall of described secondary drying chamber for wanting the inlet mouth of the dry gas of sludge-drying; Be arranged on the turning device for stirring mud in described first kiln, described turning device comprises rotation axis and at least one being arranged on described rotation axis stirs assembly, wherein, described at least one stir mud near at least one connected entrance described in assembly scraped; And air-blast device, wherein, described air-blast device is communicated with described secondary drying chamber through at least one inlet mouth described.
According to such scheme, mud drying device also comprises shredder assembly, and described shredder assembly is positioned at the downstream of described dewatering unit and is positioned at the upstream of described desiccation machine, wherein, the mud through dehydration from upstream is carried out fragmentation by described shredder assembly, is beneficial to the drying and other treatment of described mud.
According to each scheme above-mentioned, the end wall that mud drying device is also included in described secondary drying chamber arranges at least one clean-up port.
According to each scheme above-mentioned, mud drying device also comprises the discharge device be arranged in described secondary drying chamber, for discharging described clean-up port by from the described first kiln mud leaked in described secondary drying chamber.
According to each scheme above-mentioned, described modifying device comprises mixing tank, is mixed by adjusting material in described mixing tank with mud, to improve the dehydration property of mud.
According to each scheme above-mentioned, mud drying device also comprises preposition modifying device, and described preposition modifying device is positioned at the downstream of described e Foerderanlage, and is mixed with adjusting material by mud wherein, to promote the precipitation of mud; And concentrating unit, described concentrating unit is positioned at the upstream of described modifying device, for being separated with water by preposition modified mud, to reduce the water ratio of mud.
According to each scheme above-mentioned, described dewatering unit comprises plate-and-frame filter press, by modified mud pressure filtration in described plate-and-frame filter press, to obtain the sludge solids of low-water-content.
According to each scheme above-mentioned, mud drying device also comprises the heating unit for heat drying gas, and wherein, described heating unit is positioned at upstream or the downstream of described air-blast device.
According to each scheme above-mentioned, mud drying device also comprises blower unit, and wherein, described blower unit is communicated with described first kiln through described venting port.
According to each scheme above-mentioned, described desiccation machine is equipped with heat exchanger, and the cold junction of described heat exchanger is communicated with described blower unit, and its hot junction is communicated with described air-blast device, in order to exchange from the heat described venting port tail gas out.
According to each scheme above-mentioned, at least one mud turning device described described at least one stir assembly there is at least one blade or ratchet of extending radially outwardly from described rotation axis, wherein, the front end that described in when described rotation axis rotates, at least one stirs at least one blade or ratchet described in assembly or the scraping member of front end being arranged on blade or ratchet can strike off or part is struck off at least one connected entrance described or near mud.
According to each scheme above-mentioned, mud drying device also comprises the bridge be arranged on above at least one connected entrance described, wherein, between described bridge and described partition wall, form side opening, to form the crooked route from least one connected entrance described to described side opening.
According to each scheme above-mentioned, described at least one to stir assembly corresponding with described bridge, so that at least one lateral edges of front end stirring at least one blade described of assembly or the front end of ratchet or be arranged on the scraping member on blade or ratchet described can strike off or part strikes off mud near described side opening.
According to each scheme above-mentioned, described partition wall has recessed upper surface.
According to each scheme above-mentioned, described at least one comprise at least two mud turning devices, wherein each mud turning device comprises and multiplely stirs assembly, and at least one connected entrance described in the scraping member scraped of described multiple front end stirring each at least one blade described in assembly or ratchet or the front end being arranged at least one blade described or ratchet or neighbouring mud, wherein, one of them the mud turning device in described at least two mud turning devices described multiple stir assembly and the described multiple of another stir assembly layout interlaced with each other.
Accompanying drawing explanation
The structure of preferred embodiment of the present utility model, advantage and technique effect is described in detail below in conjunction with accompanying drawing and specific embodiment, wherein:
Fig. 1 is the schematic diagram of mud drying device of the present utility model;
Fig. 2 is the longitudinal sectional view of the desiccation machine in the mud drying device shown in Fig. 1;
Fig. 3 is the transverse sectional view of sludge drying machine in Fig. 2;
Fig. 4 is the in-built schematic perspective view of the desiccation machine in Fig. 2;
Fig. 5 is the stereographic map of the bridge amplification in a part for the partition wall of the curved surface of the part A of irising out in Fig. 2;
Fig. 6 is the enlarged view of the part A of irising out in Fig. 2;
Fig. 7 is the left sectional view of partition wall of the Fig. 6 got at the longitudinal direction being transverse to housing;
Fig. 8 is the schema of mud drying process of the present utility model; And
Fig. 9 is the schematic diagram of the mummification step in the mud drying process of Fig. 8.
Embodiment
Fig. 1 shows the preferred embodiment of mud drying device of the present utility model, and wherein, the water ratio of mud can be reduced to about less than 40% from about more than 90% by mud drying device 1, thus obtains the mud of granular.
Mud drying device 1 comprises e Foerderanlage, modifying device (or secondary is modified), dewatering unit, desiccation machine and air-blast device generally, and also comprises preposition modified (or once modified) device and concentrating unit, shredder assembly etc.Mud drying device 1 of the present utility model can also comprise blower unit, heating unit and heat exchanger.
Usually the water ratio from the liquid sludge of sewage disposal device is more than 90%.After receiving liquid sludge, liquid sludge can be transported in modifying device or secondary modifying device 104 by the pipeline that represented by two-wire of the direction as followed the arrow by e Foerderanlage 101.Mixed with mud by adjusting material in modifying device 104, to improve the dehydration property of mud, wherein, adjusting material can be placed in modifying device 104 in advance, also or can throw in afterwards mud enters modifying device 104 while.Such as, mud is transported in the mixing tank of modifying device 104, also adds inorganic adjusting material subsequently, and this inorganic adjusting material is conducive to carrying out mechanical dehydration to mud.
Mud after modified, filters modified mud in dewatering unit 105 to the dewatering unit 105 being positioned at modifying device downstream through Cemented filling, to isolate a large amount of water and to form solid-state mud or the mud of dehydration.Preferably, in the utility model, such as adopt pressurization to be isolated by the water in mud with the method for filtering, usually plate-and-frame filter press is utilized to make modified sludge dewatering, the mud that water ratio is about 40-60% can be obtained thus, and the mud obtained is essentially pie or bulk, the blocks be also namely shaped.
Through the block mud of dehydration by transport unit as pipeline, funnel or travelling belt etc. are transported to the desiccation machine 107 in downstream.In desiccation machine 107, block mud by the stirring of turning device, shear with broken and with fully contacting of dry gas and be able to drying, finally become the mud of the granular of water ratio less than 40%.Mud is after drying discharged by the discharge port 9 being arranged on desiccation machine.After landfill, the secondary pollution problem to environment is there will not be, and if for fattening, making the recycling that material of construction etc. can also realize resource through this mud of drying treatment.
In order to play the effect of desiccation machine better, also shredder assembly can be set in the downstream of dewatering unit 105.Block mud after dehydration is transported to shredder assembly 106 by transport unit.The block sludge crushing of the dewatering unit from upstream is become small blocks or fragment by shredder assembly 106, is beneficial to drying.Because the block size of the block mud after dehydration is uneven, thus in drying process, the block mud of different size may cause the degree of drying of each block different.Although existing shredder assembly also can carry out fragmentation to block mud, but because the dehydration of mud is insufficient, cause the water ratio of mud higher, so this shredder assembly not only can not obtain the roughly uniform small blocks of particle diameter, and it is agglomerating to be difficult to avoid the small blocks after fragmentation or agglomerate again to bond.In mud drying device 1 of the present utility model, the shredder assembly that have employed can eliminate above-mentioned defect effectively, the fragment that namely can size be become close block sludge crushing.Shredder assembly of the present utility model comprises material controlling parts and disruption elements, wherein, adjusted by material controlling parts and control to enter the speed of the mud of shredder assembly, the speed that disruption elements can be predetermined is made to carry out fragmentation to block mud, thus the small blocks of the roughly uniform mud of size desired by obtaining or fragment.
As shown in Figure 1, in mud drying device 1, except said apparatus, preposition modifying device 102 and concentrating unit 103 is also provided with.Mud is transported to the preposition modifying device (or a modifying device) 102 on the left of accompanying drawing by the pipeline that received mud can be represented by two-wire as the direction of following the arrow by e Foerderanlage 101.Being undertaken mixing by organic adjusting material and liquid sludge in preposition modifying device 102 makes mud form larger flocs unit, to improve the settleability of mud.By through preposition modified after mud by the concentrating unit 103 of Cemented filling to preposition modifying device downstream, in concentrating unit, by subsidence style, activated sludge floc is separated with water, thus the liquid sludge after concentrated is transported to the modifying device in downstream.Concentrating unit also can be the device of the forms such as gravity thickener, centrifugal concentrator or belt thickener machine.Concentrated mud is implemented follow-up sludge handling process according to order above-mentioned by modifying device (or secondary modifying device) 104 subsequently in each device.
The form cut open with vertical and horizontal respectively in figs 2 and 3 shows a preferred embodiment of the desiccation machine 107 in the mud drying device 1 shown in Fig. 1.Desiccation machine 107 is bottom drying type sludge drying machines of a kind of monomeric form, and the partition wall 4 comprising the first kiln 6a, secondary drying chamber 6b and the first kiln 6a and secondary drying chamber 6b is separated.Partition wall 4 is formed the connected entrance 5 of connection first kiln 6a and secondary drying chamber 6b, enters in the first kiln 6a through connected entrance 5 to make dry gas and drying is carried out to mud wherein.
Fig. 2 shows a preferred embodiment of bottom of the present utility model drying type sludge drying machine, and Fig. 3 is the transverse sectional view of sludge drying machine in Fig. 1, wherein schematically illustrates a kind of sludge drying machine of monomeric form.Bottom drying type sludge drying machine 107 comprises housing, and housing comprises upper housing 2, lower housing 4a and upper cover (or lid) 3.The bottom of upper housing 2 is used as the partition wall 4 internal space of housing being separated into the first kiln 6a and secondary drying chamber 6b.Wherein, upper housing 2 and upper cover 3 form the first kiln 6a, and the bottom of lower housing 4a and upper housing 2 and partition wall form secondary drying chamber 6b.Partition wall 4 being formed the connected entrance 5 for being communicated with the first kiln 6a and secondary drying chamber 6b, entering into the first kiln 6a to enable dry gas from secondary drying chamber 6b.As shown in the figure, although the first kiln 6a and secondary drying chamber 6b arranges also can have other arrangement form up and down.But, housing can be formed by multiple parts or constructed in various ways, such as, the sidewall of the upper housing 2 illustrated can separate with partition wall 4 and manufactures, wherein, plate-shaped member can be used as division plate with alternative partition wall, division plate to be arranged on sidewall, and also sidewall, division plate and lower housing 4a can be fitted together.In addition, lower housing 4a and partition wall 4 can also be integrally formed, and cancel the bottom of lower housing, lower housing 4a is arranged on the B of ground etc.The shape of housing is rectangular, but also can be square, Polygons, ellipse or other shape.
As shown in the figure, the upper cover 3 of housing is respectively equipped with for making to be dried or wanting dry mud to enter the opening for feed 8 of the first kiln and the venting port 10 for the tail gas after discharging sludge-drying or dry gas, and on the end wall away from the upper housing 2 near the partition wall 4 of opening for feed 8, is provided with the discharge port 9 for dried mud.In a further embodiment, can as required by be arranged on for the opening for feed 8 of the first kiln and venting port 10 upper housing 2 and upper cover 3 one of them on optional position, the also optional position of the i.e. upper part of the first kiln 6a.Equally, discharge port 9 can be arranged on the optional position comprising the circumferential wall of sidewall and end wall of upper housing 2, is also the optional position of the circumferential wall of the first kiln 6a.
Fig. 4 shows the internal structure of the sludge drying machine of Fig. 1.The bottom and partition wall 4 of the first kiln 6a are formed two row's connected entrances 5 and have multiple connected entrance 5 arranged spaced apart in that, in each row, but is provided with bridge 401 above each connected entrance of multiple connected entrances of a row wherein.Except the rectangle illustrated, connected entrance 5 can have various different shape, such as trapezoidal, rectangle, trilateral, arch, circular etc.The length direction X of each connected entrance 5 intersects with the longitudinal direction G of housing, preferably mutually vertical, and therefore, multiple connected entrances 5 of each row intersect with the longitudinal direction G of housing or almost parallel.
Two are be arranged in parallel for stirring turning device 7a, 7b of mud along the longitudinal direction G of housing in the first kiln.Because two turning devices 7a, 7b have same or similar structure, therefore, only to one of them turning device as turning device 7a is described in detail.See Fig. 2-4 turning device 7a, there is rotation axis 701a and be fixed on rotation axis 701a and stir assembly 702a for what stir mud.Stir assembly 702a and include four blades or ratchet 703a, and each blade or ratchet 703a radially stretch out from rotation axis 701a.But, each stir assembly 702a multiple blade or ratchet 703a can be differing from each other from the length that rotation axis 701a extends, and at least one stirring in assembly 702a multiple is stirred assembly and can be had the blade or ratchet that length is longer, and other stirs blade or ratchet that assembly can have length shorter.Preferably, multiple each assemblies that stir stirring assembly 702a on rotation axis 701a correspond to each other with each connected entrance in multiple connected entrance 5 respectively, and the top end face of the blade usually stirred on assembly or ratchet 703a is to connected entrance 5, and the length of blade or ratchet 703a is configured to the front end that makes it or top can strike off mud in connected entrance or neighbouring, so that the dry gas in secondary drying chamber 6b can move smoothly through connected entrance 5 enter the first kiln 6a.
Although dry gas (as shown by arrows) enters the first kiln 6a by the connected entrance 5 on partition wall 4 from secondary drying chamber 6b, and is discharged by venting port 10 after interacting with mud, to increase the chance that dry gas contacts with mud.But, when mud to be dried to be rendered in the first kiln 6a and after being deposited on partition wall 4 through opening for feed 8, stir stirring and the effect of dry gas of assembly 702a, 702b along with turning device 7a, 7b, a part of mud can be dropped from the first kiln 6a by connected entrance 5 or leak into secondary drying chamber 6b.In order to reduce the leakage of mud, bridge 401 is arranged on the top of connected entrance 5, to utilize bridge 401 to stop that mud is through the leakage of connected entrance to secondary drying chamber 6b.As shown in the figure, another row multiple connected entrances each above be provided with bridge 401.The length direction X that bridge 401 is arranged in connected entrance strides across connected entrance 5, and almost parallel with the length direction of connected entrance 5.The length of bridge 401 is longer than the length of connected entrance 5, thus bridge 401 can bridge above connected entrance 5 as bridge on the length direction of connected entrance 5, and its two ends be separately fixed at connected entrance end margin near partition wall 4 on.Interlude due to bridge 401 is positioned at the top of connected entrance 5, thus forms side opening 402 between bridge 401 and partition wall 4, and can form side opening 402 in the side of bridge 401 or form a side opening 402 in its every side.Therefore, the longitudinal direction G of the opening direction of side opening 402 and the axial direction due of rotation axis or housing is almost parallel.The bridge 401 of the top of connected entrance 5 is conducive to reducing mud and drops from the first kiln 6a or leak into secondary drying chamber 6b, but the mud be deposited near side opening also disturbs dry gas enters in the first kiln 6a from secondary drying chamber 6b.In order to promote the flowing of dry gas, each lateral edges being configured to its blade or the front end of ratchet 703b or front end stirring assembly 702b of turning device 7b can strike off the mud near the side opening 402 of bridge 401.Can determine that turning device 7a, 7b's stirs assembly 702a, 702b interval on rotation axis 701a, 701b according to the multiple connected entrance on partition wall 4 often in row or the distance that is spaced of bridge, so as when rotation axis to rotate near each connected entrance or bridge mud can be struck off by the front end of the blade or ratchet that stir assembly.In a word, connected entrance or the bridge position on partition wall with stir assembly position on the rotating shaft and be associated, but the quantity of the quantity and connected entrance 5 or the bridge on it 401 of stirring assembly 702a, 702b need not one_to_one corresponding.
As shown in Figure 3, the partition wall 4 between the first kiln 6a and secondary drying chamber 6b has recessed upper surface.Look up in the side of the longitudinal direction G being transverse to housing, the upper surface of partition wall 4 has recessed shape, and the segment of curve on also namely recessed surface is given prominence to downwards from the first kiln 6a towards secondary drying chamber 6b, and in other words, the first kiln 6a has the bottom of indent.Therefore, partition wall is shown as recessed area at the longitudinal direction G of housing.As shown in the figure, the partition wall 4 of curved surface is recessed towards the region of each turning device of two turning devices 7a, 7b, and preferably each recessed area is corresponding with stirring assembly 702a or 702b, and recessed area can be circular arc.The bridge being arranged on the top of connected entrance can be plate, wherein, comprises flat board, twisted plate, herring-bone plate etc.
Fig. 5 shows the preferred embodiment of the bridge on partition wall.Dull and stereotyped bridge 401 is positioned at the top of connected entrance 5 and is parallel to each other with connected entrance in the longitudinal direction, thus forms side opening 402 between bridge 401 and partition wall 4.If when the recessed area of partition wall 4 is circular arc, so the shape of side opening 402 just presents crescent.Therefore, the shape of side opening 402 depends on the shape of the recessed area of bridge 401 and partition wall.
Fig. 6 shows the amplification view of the part A of irising out in Fig. 2, and wherein, the assembly that stirs showing turning device is near a side opening.Dull and stereotyped bridge 401 is positioned at the top of connected entrance 5 and its both sides and partition wall define two side openings 402.Dry gas as shown by arrows enters connected entrance 5 just to be needed to turn to could arrive the first kiln 6a through left or right side opening 402 from the below of partition wall 4 and secondary drying chamber 6b.Therefore, between the first kiln and secondary drying chamber, there is at least one crooked route from connected entrance to side opening, to reduce mud from the first kiln to the leakage of secondary drying chamber.Mud near one of them side opening 402 that the position stirring assembly 702b of turning device 7b makes its blade or the front end of ratchet strike off between bridge 401 and partition wall 4, and the leakage being not only conducive to reducing mud of striking off to the mud near side opening, and contribute to dry gas from the first kiln to the flowing of secondary drying chamber.In another embodiment, on the blade stirring assembly or ratchet, scraped parts can be installed, strike off mud near side opening to utilize the front end of scraped parts.In another embodiment, side shield can be set to be blocked by one of them side opening in the side of bridge 401, and only retain opposite side opening, enter the first kiln 6a to allow dry gas along a direction.Side shield is arranged in side opening 402 along the length direction of bridge 401, to stop dry gas to pass therethrough, the assembly 702 that stirs of turning device 7 can be made so only to strike off mud near opposite side opening 402.This set of baffle plate is to make dry gas only enter the first kiln 6a towards outflow side, direction opening 402, and prevents dry gas from entering the first kiln from contrary other direction and mud therefrom leaks.
Shown in Fig. 2-4, in turning device 7a, 7b of two staggered arrangement each other, on first rotation axis 701a first stirs the blade of assembly 702a or the scraped front end of ratchet close to the second rotation axis 701b stirs between assembly 702b at two adjacent second, otherwise and also like this.So both shorten the between centers between the first rotation axis 701a and the second rotation axis 701b, it also avoid first stir assembly 702a and second stir between assembly 702b occur interfere.In another embodiment, partition wall 4 can be configured to and only form multiple connected entrance 5 thereon, and each turning device 7a, 7b multiple to stir assembly 702a, 702b mutually corresponding with multiple connected entrance 5 respectively, so that the interior or neighbouring mud of connected entrance 5 can be struck off in the scraped front end of the blade or ratchet 703a, 703b that stir assembly 702a, 702b.Also bridge 401 can be set above connected entrance 5, and each turning device 7a, 7b multiple to stir assembly 702a, 702b mutually corresponding with multiple bridge 401 respectively, so that the lateral edges stirring the blade of assembly 702a, 702b or the scraped front end of ratchet 703a, 703b can strike off the mud near the side opening 402 of bridge 401, flow into the first kiln 6a swimmingly to make dry gas.Except the effect of striking off, blade or ratchet 703a, 703b of stirring assembly 702a, 702b also play shearing, fragmentation and stir the effect of mud.In another embodiment, the scraped parts can installed on blade or ratchet, so that the mud near connected entrance or side opening can be struck off in the front end of scraped parts.
See Fig. 2, one end of rotation axis 701a, 701b of two turning devices 7a, 7b can be respectively equipped with and power input.By external impetus device drives transmission mechanism, and transmission mechanism drives rotation axis 701a, 701b to rotate successively, one that makes that the power input on rotation axis 701a, 701b such as gear or belt pulley 18a drive in two rotation axiss 701a, 701b, thus another rotation axis is rotated.First rotation axis 701a and the second rotation axis 701b both can rotate relative to each other in the opposite direction, also can rotate in the same direction together.
Fig. 7 shows the preferred embodiment of top through the rotational trajectory of the lower concave part office of the partition wall 4 of curved surface stirring blade on assembly or ratchet of turning device.Blade or ratchet 703b have circular rotational trajectory, and when the top of blade or ratchet 703b is inswept along the curved surfaces of partition wall 4, near connected entrance 5, the distance of the top of blade or ratchet 703b and the internal surface of partition wall 4 is roughly equal.The lateral edges that this arcuate shape contributes to when stir the blade of assembly or the scraped front end of ratchet or the front end that is arranged on the scraped parts on blade or ratchet skims over side opening 402, after removing the mud near it, the mud being struck off and dig the also easier recessed curved profile along partition wall falls back to the lower position in the first kiln 6a, thus improves the contact frequency of dry gas and mud.Preferably, the skeletal lines of the recessed area internal surface in the horizontal of partition wall 4 and the blade stirring assembly 702a, 702b of each turning device 7a, 7b or the scraped top of ratchet 703a, 703b or the rotational trajectory on the top of scraped parts that it is installed similar, also namely the radius R of the division plate of curved surface in the face of the recessed circular arc region of turning device slightly larger than the axis of rotation axis to the distance r on top stirring assembly.
As shown in Figures 2 and 3, secondary drying chamber 6b comprises the inlet mouth 15 on the sidewall being arranged on lower housing 4a, also namely inlet mouth 15 is positioned on the sidewall of secondary drying chamber 6b, enter into secondary drying chamber 6b, and inlet mouth can be one or more with the dry gas being used in mud to be dried.Although the strike off mud that contributes to minimizing first kiln 6a in of front end to the mud near the side opening 402 of the bridge 401 above connected entrance 5 or connected entrance stirring the blade of assembly 702a, 702b or the scraped front end of ratchet 703a, 703b or be fixed on the scraped parts on blade or ratchet drops in secondary drying chamber 6b, but still some mud may be had to be leaked in secondary drying chamber 6b by connected entrance 5 or the crooked route from side opening to connected entrance.In order to remove the mud leaked in secondary drying chamber 6b, the end wall of lower housing 4a is provided with clean-up port 15a, wherein, clean-up port 15a is used for discharging the mud of alluvial in secondary drying chamber 6b.In addition, discharge device can be set the position near bottom in secondary drying chamber 6b, mud be sent to the clean-up port 15a of one end of secondary drying chamber 6b and discharge housing.Secondary drying chamber 6b is transversely roughly in doline, its sidewall is also that the sidewall of lower housing 4a narrows from partition wall gradually towards bottom, and the shape that also namely bottom is located at the position of narrowing is arc or semicircular, thus form the vertical passage of an arc section in the bottom of secondary drying chamber 6b.The mud leaked by the first kiln 6a by the crooked route from side opening to connected entrance can be pooled in the vertical passage of arc section, to be discharged to easily outside housing by the discharge device be arranged in vertical passage.Leaking into mud in secondary drying chamber 6b can by the dry gas entered in secondary drying chamber 6b dry or redrying again, to reduce the water ratio of mud further.In order to keep the opposing seal of secondary drying chamber 6b, movable baffle plate can being set at 15a place, clean-up port, to make dry gas not leak, and when discharging mud, shifting board being opened.
Mud drying device 1 also comprises air-blast device 12.As the connecting tube by being represented by two-wire in the direction of the arrow, desiccation machine 107 is communicated with air-blast device 12 by inlet mouth 15, and wherein, air-blast device 12 dry gas of sludge-drying can be blown into the secondary drying chamber 6b of desiccation machine 107.
Mud drying device 1 can also comprise blower unit 13, heating unit 108 or heat exchanger 109.As shown in Figure 1, if need the hot drying gas blowed in secondary drying chamber 6b, heating unit 108 can be set at the downstream position of air-blast device 12, to provide the dry gas of heating to desiccation machine 107.Blower unit 13 can be arranged on the downstream position of desiccation machine 107, flows out as early as possible from the first kiln 6a to make the tail gas after sludge-drying or dry gas.Heat exchanger 109 can be associated with air-blast device 12 and blower unit 13, and wherein, the hot junction of heat exchanger 109 is connected with air-blast device 12, and its cold junction is connected with blower unit 13.Like this, tail gas from blower unit 13 passes through the cold junction of heat exchanger 109, and the hot junction of dry gas by heat exchanger 109 of the outside of air-blast device 12 will be entered, heat exchanger 109 is made to reclaim the heat in tail gas by heat-exchanging part and transfer heat to the dry gas for mud to be dried that will enter air-blast device 12, to improve thermo-efficiency.
See Fig. 1 and 3, air-blast device 12 is communicated with secondary drying chamber 6b with inlet mouth 15 through pipeline, to be blown in secondary drying chamber 6b by dry gas.Blower unit 13 is communicated with the first kiln 6a with venting port 10 through pipeline.The dry gas be transported in secondary drying chamber 6b can be as the drying medium such as hot gas, gas, warm air, gas at normal temperature or frozen gas containing chemical substance, also can be the drying medium of formulated.Air-blast device 12 can be used for improving the speed in dry gas inflow secondary drying chamber 6b, and blower unit 13 can accelerate the outflow of tail gas from the first kiln 6a.Typically, air-blast device can be gas blower or fan, and blower unit can be induced draft fan.In addition, also can substitute air-blast device 12 with supercharging device, so that dry gas is transported to secondary drying chamber 6b with certain pressure, thus make dry gas accelerate inflow first kiln 6a.Blower unit 13 can be substituted with reliever equally, to accelerate the flowing of tail gas, thus improve sludge drying efficiency.Heating unit (not shown) can be arranged separately, also can integrate with air-blast device.In addition, the dry gas through heating is transported in secondary drying chamber 6b can carries out dry to mud wherein again by air-blast device or supercharging device.At the dry gas of heating to drop or while the mud leaked in secondary drying chamber 6b carries out redrying, the upper housing 2 that a part of heat wherein also can be made by metallic substance and partition wall 4 are delivered to the mud be laid on partition wall 4, to play auxiliary mummification to the mud in the first kiln 6a.
Fig. 8 shows sludge drying flow process of the present utility model.As mentioned above, received water ratio can directly be obtained the mud of water ratio about less than 40% by about mud of more than 90% by mud drying device 1 of the present utility model after a series of sludge treatment and mummification, and in mud drying process, the water ratio of mud at each treatment stage by reduction gradually.Mud drying device 1 is utilized to carry out the liquid sludge that sludge drying is applicable to the different water cut of process more than 90%, such as, implement supplying step 101a after having detected the water ratio of mud, e Foerderanlage 101 can be utilized liquid sludge to be delivered to modifying device or secondary modifying device 104 carries out modifier treatment.At modified step 104a, mixed by organic adjusting material with mud, to make liquid sludge be applicable to mechanical dehydration, and the mud after modified is transported to the dewatering unit 105 in downstream.At dehydrating step 105a, dewatering unit is utilized to carry out mechanical dehydration process to modified mud, the moisture therefrom leached to be emitted and the mud stayed becomes solid-state block, wherein, the water ratio of this block mud is approximately 40-60%, and the block mud after dehydration is transported to desiccation machine and carries out drying and other treatment.At mummification step 107a, block mud is transported in the first kiln of desiccation machine 107, by turning device stir assembly mud is sheared, broken and stir, through connected entrance or side opening, from secondary drying chamber, the dry gas entered in the first kiln contacts and stirs the blade of assembly or scraped front end the striking off the mud near connected entrance or side opening of ratchet with mud, mud obtains sufficient drying.Dry complete mud is discharged desiccation machine by implementing discharging step 9a.If needed, by e Foerderanlage 101, liquid sludge can be transported to preposition modifying device 102 and concentrating unit 103, to implement preposition modified step 102a and enrichment step 103a.Organic adjusting material mixed the generation to promote mud flock with mud at preposition modified step 102a, and at enrichment step 103a, mud flock be separated with moisture and reduce the water ratio of mud.Afterwards concentrated mud is transported to modified step 104a as above, to implement follow-up drying and other treatment process.In addition, obtaining sufficient drying to make mud can carry out fragmentation to the block mud after dehydration, therefore, can implement destruction step 106a before mummification step 107a.Destruction step 106a is the small blocks or the fragment that in shredder assembly 106, the block sludge crushing after dehydration are become similar size, so that each fragment is heated evenly in drying process.In addition, need to implement aeration step 12b at the drying process of mud, wherein, make dry gas enter air-blast device 12, and dry gas is blown into the inlet mouth 15 of secondary drying chamber 6b by air-blast device 12.In another embodiment, air inducing step 13b can be implemented, by blower unit 13, the venting port 10 of tail gas from the first kiln be reclaimed, to flow to follow-up treatment facility.Also can implement heating steps 108a, make outside dry gas flow through heating unit 108 so that dry gas is heated to desired temperature.Heat recovery step 109a can also be implemented, the tail gas reclaimed by blower unit 13 is transported to the cold junction of heat exchanger 109, by heat exchanging process, the heat in tail gas is passed to the dry gas in the hot junction flowing through heat exchanger 109, thus the utilization ratio of used heat can be improved.
Fig. 9 shows and utilizes desiccation machine 107 to realize mud in the flow process of change process or method.Composition graphs 2 and 3, can implement mud drying process by each device illustrated.Dewatered sludge or broken mud are sent in the first kiln 6a of desiccation machine 107 (as is shown in phantom lines) through feed step 8a by e Foerderanlage.Stirring and curettage step 107a1, external impetus equipment (not shown) drives rotation axis 701a, 701b to rotate by transmission mechanism and power input such as power input 18b, and then assembly 702a, 702b rotation is stirred in drive.Each blade or ratchet 703a, 703b of stirring assembly constantly stir mud.Stir assembly continuous shear stress and broken while, the lateral edges of the front end stirred the blade of assembly 701a, 701b or the scraped front end of ratchet 702a, 702b or be arranged on the scraped parts on blade or ratchet strikes off mud near connected entrance 5 or side opening 402 by certain time interval.Meanwhile implement air inlet step 15b, through pipeline and inlet mouth 15, dry gas is transported to the secondary drying chamber 6b of desiccation machine 107 by air-blast device 12.The velocity of flow that dry gas enters secondary drying chamber 6b is associated with air supply velocity.The front end stirred the blade of assembly or the front end of ratchet 702a, 702b or be arranged on the scraped parts on blade or ratchet makes dry gas flow into the first kiln 6a swimmingly to striking off of the mud near connected entrance or side opening 402.Along with stir in the first kiln 6a the blade of assembly or ratchet 702a, 702b to shearing, the fragmentation of mud and stir and dry gas to the desiccation of mud; the granularity of mud diminishes and powder gradually, thus the degree of drying of mud also improves constantly.After the drying completing mud dry gas at steps of exhausting 10a by blower unit 13 through being arranged in the venting port 10 on the top of the first kiln 6a and Cemented filling to air or heat exchanger 107, and at discharging step 9a, dried mud discharge port 9 to be discharged.In addition, at redrying or the drying step 107a2 again of mud, the dry gas be transported in secondary drying chamber 6b by air-blast device 12 carries out redrying to the mud leaked in secondary drying chamber by connected entrance 5 or the crooked route from connected entrance to side opening, to reduce the water ratio of mud further.Mud after dried mud and redrying can be transported to mud collecting device respectively by the discharge port 9 of the first kiln and the clean-up port 15a of secondary drying chamber at discharging step 9a and cleanup step.In addition, feed step 8a, stir with curettage step 107a, air inlet step 15b, steps of exhausting 10a and redrying or again drying step 107a2 both can implement successively, can implement again simultaneously.
Although list preferred embodiment multiple in this application, but the utility model is not limited only to the content arrived mentioned by specification sheets, those skilled in the art completely can be changed all parts in the drying type sludge drying machine of bottom of the present utility model or device and retrofit by above-mentioned design philosophy of the present utility model, and these changes or remodeling are all within concept of the present utility model.
Claims (14)
1. a mud drying device, is characterized in that, described mud drying device comprises:
Modifying device, described modifying device is positioned at the downstream of described e Foerderanlage, and wherein in the future the described mud of self-conveying apparatus mix with adjusting material, to improve the dehydration property of described mud;
Dewatering unit, the described mud from upstream dewaters by described dewatering unit, to reduce the water ratio of described mud;
Desiccation machine, described desiccation machine comprises:
Housing, wherein, described housing has partition wall, so that the separated by spaces in described housing is become the first kiln and secondary drying chamber, and on described partition wall, forms at least one connected entrance for being communicated with described first kiln and described secondary drying chamber;
Be arranged on the opening for feed of the mud for wanting mummification and the venting port for the dry gas after dewatered sludge on the top of described first kiln, and be arranged on the discharge port for the mud after mummification on the circumferential wall of described first kiln;
Be arranged at least one on the sidewall of described secondary drying chamber for wanting the inlet mouth of the dry gas of sludge-drying;
Be arranged on the turning device for stirring mud in described first kiln, described turning device comprises rotation axis and at least one being arranged on described rotation axis stirs assembly, wherein, described at least one stir mud near at least one connected entrance described in assembly scraped; And
Air-blast device, wherein, described air-blast device is communicated with described secondary drying chamber through at least one inlet mouth described.
2. mud drying device according to claim 1, is characterized in that, the end wall that described desiccation machine is also included in described secondary drying chamber arranges at least one clean-up port.
3. mud drying device according to claim 2, it is characterized in that, described desiccation machine also comprises the discharge device be arranged in described secondary drying chamber, for discharging described clean-up port by from the described first kiln mud leaked in described secondary drying chamber.
4. mud drying device according to claim 1, is characterized in that, described modifying device comprises mixing tank, is mixed by adjusting material in described mixing tank with mud, to improve the dehydration property of mud.
5. mud drying device according to claim 1, is characterized in that, it also comprises preposition modifying device, and described preposition modifying device is positioned at the downstream of described e Foerderanlage, and is mixed with adjusting material by mud wherein, to promote the precipitation of mud; And
Concentrating unit, described concentrating unit is positioned at the upstream of described modifying device, for being separated with water by preposition modified mud, to reduce the water ratio of mud.
6. mud drying device according to claim 1, is characterized in that, described dewatering unit comprises plate-and-frame filter press, by modified mud pressure filtration in described plate-and-frame filter press, to obtain the sludge solids of low-water-content.
7. mud drying device according to claim 1, is characterized in that, it also comprises blower unit, and wherein, described blower unit is communicated with described first kiln through described venting port.
8. the mud drying device according to claim 1 or 7, is characterized in that, it also comprises the heating unit for heat drying gas, and wherein, described heating unit is positioned at upstream or the downstream of described air-blast device.
9. the mud drying device according to claim 1 or 7, it is characterized in that, it is equipped with heat exchanger, and the cold junction of described heat exchanger is communicated with described blower unit, and its hot junction is communicated with described air-blast device, in order to exchange from the heat described venting port tail gas out.
10. mud drying device according to claim 8, it is characterized in that, described desiccation machine is equipped with heat exchanger, and the cold junction of described heat exchanger is communicated with described blower unit, and its hot junction is communicated with described air-blast device, in order to exchange from the heat described venting port tail gas out.
11. mud drying devices according to claim 1, it is characterized in that, at least one mud turning device described described at least one stir assembly there is at least one blade or ratchet of extending radially outwardly from described rotation axis, wherein, the front end that described in when described rotation axis rotates, at least one stirs at least one blade or ratchet described in assembly or the scraping member of front end being arranged on blade or ratchet can strike off or part is struck off at least one connected entrance described or near mud.
12. mud drying devices according to claim 1, it is characterized in that, described partition wall has recessed upper surface, and at least one connected entrance described comprises multiple connected entrance, wherein, described multiple connected entrance is arranged at certain intervals along the longitudinal direction of described housing in groups in described first kiln.
13. mud drying devices according to claim 12, it is characterized in that, at least one mud turning device described described at least one stir assembly and comprise and multiplely stir assembly, wherein, each assembly that stirs has at least one blade or ratchet of extending radially outwardly from described rotation axis and described multiple to stir assembly substantially corresponding with described multiple connected entrance, the front end that described in when described rotation axis rotates, at least one stirs at least one blade or ratchet described in assembly or the scraping member of front end being arranged on blade or ratchet can strike off or part is struck off in corresponding connected entrance or near mud.
14. mud drying devices according to claim 13, it is characterized in that, at least one mud turning device described comprises plural mud turning device, wherein each mud turning device comprises and multiplely stirs assembly, and in the corresponding connected entrance of scraping member scraped of described multiple front end stirring each at least one blade described in assembly or ratchet or the front end being arranged at least one blade described or ratchet or neighbouring mud, wherein, one of them mud turning device in described at least two mud turning devices described multiple stir assembly and the described multiple of another stir assembly layout interlaced with each other.
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| CN201520024806.4U CN204803202U (en) | 2015-01-07 | 2015-01-07 | Sludge drying device |
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| CN201520024806.4U CN204803202U (en) | 2015-01-07 | 2015-01-07 | Sludge drying device |
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| WO2016110212A1 (en) * | 2015-01-07 | 2016-07-14 | 广州新致晟环保科技机械设备有限公司 | Sludge drying system and method |
| WO2016110210A1 (en) * | 2015-01-07 | 2016-07-14 | 广州新致晟环保科技机械设备有限公司 | Bottom-drying sludge drying device and method |
| WO2016110221A1 (en) * | 2015-01-07 | 2016-07-14 | 广州新致晟环保科技机械设备有限公司 | Bridge-shaped member of sludge drying device for bottom ventilation and sludge drying device |
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| WO2016110213A1 (en) * | 2015-01-07 | 2016-07-14 | 广州新致晟环保科技机械设备有限公司 | Sludge drying system and method |
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| WO2016110210A1 (en) * | 2015-01-07 | 2016-07-14 | 广州新致晟环保科技机械设备有限公司 | Bottom-drying sludge drying device and method |
| WO2016110221A1 (en) * | 2015-01-07 | 2016-07-14 | 广州新致晟环保科技机械设备有限公司 | Bridge-shaped member of sludge drying device for bottom ventilation and sludge drying device |
| WO2016110222A1 (en) * | 2015-01-07 | 2016-07-14 | 广州新致晟环保科技机械设备有限公司 | Bottom-drying sludge drying device and method |
| WO2016110213A1 (en) * | 2015-01-07 | 2016-07-14 | 广州新致晟环保科技机械设备有限公司 | Sludge drying system and method |
| US10408538B2 (en) | 2015-01-07 | 2019-09-10 | Guangzhou Environmental Creative Solutions Co Ltd | Bottom-drying sludge drying device and method |
| CN105688468A (en) * | 2016-02-02 | 2016-06-22 | 耿春茂 | Drying diaphragm plate-frame pressure filtration system |
| CN105688468B (en) * | 2016-02-02 | 2018-02-06 | 耿春茂 | One kind drying diaphragm plate frame press filteration system |
| CN105776811A (en) * | 2016-05-05 | 2016-07-20 | 深圳市怡泰水处理有限公司 | Sludge dewatering method and device |
| CN109133563A (en) * | 2018-06-25 | 2019-01-04 | 王燕 | A kind of hot phase-separating device and separation method of oily waste |
| CN115321785A (en) * | 2022-06-23 | 2022-11-11 | 上海仁创环境科技有限公司 | Energy-recovery solar sludge drying technology and working method thereof |
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