CN215886761U - Automatic mud self-cleaning's sludge sheet frame dehydration mummification set composite of falling of filter cloth - Google Patents

Automatic mud self-cleaning's sludge sheet frame dehydration mummification set composite of falling of filter cloth Download PDF

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CN215886761U
CN215886761U CN202121399219.5U CN202121399219U CN215886761U CN 215886761 U CN215886761 U CN 215886761U CN 202121399219 U CN202121399219 U CN 202121399219U CN 215886761 U CN215886761 U CN 215886761U
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filter
filter cloth
plate
sludge
drying
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石文政
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Abstract

The utility model relates to the technical field of sludge dewatering and drying, in particular to a sludge plate frame dewatering and drying composite device capable of automatically cleaning filter cloth falling mud. The sludge plate-frame dehydration and drying compound device and the sludge plate-frame dehydration and drying technology for automatically cleaning filter cloth falling mud provided by the utility model can directly dehydrate and dry the water content of the sludge from about 90-99% to about 30%, and have the characteristics of automatically falling mud of a mud cake (without manual assistance) and synchronously cleaning the filter cloth.

Description

Automatic mud self-cleaning's sludge sheet frame dehydration mummification set composite of falling of filter cloth
Technical Field
The utility model relates to the technical field of sludge dewatering and drying, in particular to a sludge plate-frame dewatering and drying composite device with automatic filter cloth dropping and automatic cleaning functions.
Background
With the progress of society, the environmental protection is in depth. The sewage treatment amount is increasing, the sludge amount generated in the sewage treatment process is also increasing, and the sludge amount generated in the current sewage treatment every year can reach more than 5000 million tons. The sludge can not be well treated, and secondary pollution is easy to form. But the operation cost of the existing sludge treatment is too high, and the social and economic pressure brought to sludge treatment is also very huge. This is a troublesome contradiction. The method is continuously practiced in the field of sludge treatment and disposal, and a sludge treatment and disposal technology with low operation cost is always explored.
The most important link in the sludge treatment is reduction, the link occupies the largest investment proportion and has the highest operation cost. At present, mechanical equipment such as a centrifuge, a plate frame machine and the like is mainly used for dehydrating sludge until the water content is 70-80%, then the sludge enters a heat drying device, and the water content is reduced to about 30%, so that the weight of the sludge is reduced by 60-70% compared with that of the sludge directly dehydrated. The reduction of the sludge is realized. However, the traditional reduction technology is often a scheme of dehydration and drying, and generally comprises dehydration equipment and drying equipment, the system composition is relatively complex, and the occupied area and the investment are large.
In the prior art, although the device integrating the dewatering and drying equipment is also provided, the filter cake has adhesion, so that the filter cake needs to be removed after dewatering and drying, meanwhile, the filter cloth needs to be cleaned to ensure permeability, the integrated dewatering and drying device is designed compactly, and the workload of manually removing the filter cake and cleaning the filter cloth is large.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the defects of the prior art and provides a sludge plate-frame dehydration and drying composite device for automatically cleaning filter cloth by automatically dropping sludge, which can automatically drop a treated filter cake from the filter cloth and clean the filter cloth while realizing sludge dehydration and drying.
In order to achieve the purpose, the sludge plate-frame dehydration and drying composite technology for automatically cleaning filter cloth by automatically dropping sludge is designed, and comprises a plurality of filter pressing units which are sequentially arranged in parallel, wherein each filter pressing unit comprises a first filter plate (3) and a second filter plate (4) which are oppositely arranged, a filter pressing cavity is formed between the first filter plate (3) and the second filter plate (4), and filter cloth (6) is arranged in each filter pressing unit;
heating plates (1) are arranged on two sides of the first filter plate (3), a heating cavity (9) is arranged between the heating plates (1) and the first filter plate (3), elastic diaphragms (2) are arranged on two sides of the second filter plate (4), a liquid inlet and a liquid outlet are formed in the elastic diaphragms (2), and a squeezing cavity is formed between the elastic diaphragms (2) and the second filter plate (4);
the top of the first filter plate (3) and the top of the second filter plate (4) of each filter pressing unit are provided with a filter cloth driving device (10), the bottom of the filter cloth driving device (10) is provided with a filter cloth cleaning and spraying device, the upper end of the filter cloth driving device (10) is provided with a transmission chain (5), the upper end of the transmission chain (5) is provided with a first filter cloth traction rod (11), the lower end of the transmission chain is provided with a second filter cloth traction rod (12), the filter cloth comprises a first filter cloth (601) and a second filter cloth (602), one end of the first filter cloth (601) is fixed with the first filter cloth traction rod (11), the other end of the first filter cloth traction rod (14) is connected with the second filter cloth traction rod (12) by bypassing the second rotary rod (13), and when the transmission chain (5) is driven by the filter cloth driving device, the draw bar can be driven to move up and down, and the first filter cloth and the second filter cloth can move up and down.
The utility model also has the following preferable technical scheme:
in one embodiment, the heating plate, the elastic membrane, the first filter plate and the second filter plate are correspondingly provided with feed channels, so that materials enter the filter pressing cavity.
In one embodiment, two ends of the heating cavity between the heating plate and the first filter plate are connected with a circulating heating system.
In one embodiment, a liquid inlet and a liquid outlet at two ends of the elastic membrane are connected with a high-pressure squeezing circulating water pump.
In one embodiment, the filter press further comprises a negative pressure fan connected with the filter press cavity.
In one embodiment, the filter cloth transmission device comprises a first rotating rod and a second rotating rod, wherein a first filter cloth is wound on the first rotating rod, and a second filter cloth is wound on the second rotating rod.
In one embodiment, the filter cloth transmission device further comprises a spray rod used for cleaning the filter cloth.
In one embodiment, the filter cloth driving device is further provided with a roller for assisting the movement of the transmission chain.
In the embodiment, the filter pressing device further comprises a pressing plate and a bottom plate, wherein the pressing plate and the bottom plate are located on two sides of the filter pressing unit.
Beneficial effects of the utility model
The sludge plate-frame dehydration and drying composite device for automatically cleaning filter cloth falling mud provided by the utility model has the advantages that the device comprises the following aspects:
1. the dehydration and the drying of the sludge are realized in the same equipment, and the water content can be reduced to about 30 percent;
2. the filter cloth of the plate-and-frame dehydrator can move up and down, and mud cakes can automatically fall off without manual assistance;
3. the filter cloth of the plate-and-frame dehydrator can move up and down, and is cleaned at the same time, so that the filter cloth is not easy to block, the yield of equipment is stable, and the attenuation is slow;
4. hot water is introduced into the inner side of the stainless steel heating plate, heat is transferred to the sludge, water gasification evaporation in the sludge is promoted, and the water content of the sludge is reduced to about 30%;
5. a water passing channel is formed between the filter cloth and the stainless steel plate as well as between the filter cloth and the elastic membrane, negative pressure is formed in the water passing channel by suction of a negative pressure fan, the gasification temperature of water in sludge is reduced, the temperature of hot water for transferring heat can be reduced, and the plastic filter cloth is effectively protected from deformation and aging because the temperature of the hot water is lower by about 90 ℃.
6. The squeezing water is introduced into the elastic diaphragm, the squeezing water is at high pressure and low temperature, and is generally at normal temperature, and the low-temperature squeezing water reduces the temperature of the elastic diaphragm and protects the service life of the elastic diaphragm.
Drawings
FIG. 1 is a schematic structural diagram schematically illustrating a sludge plate-frame dewatering and drying compound device with automatic filter cloth dropping and automatic cleaning functions, according to the present invention;
FIG. 2 is a schematic side view schematically illustrating a sludge plate-frame dewatering and drying compound device with automatic filter cloth dropping and cleaning functions, according to the present invention;
in the figure: 1. the filter cloth driving device comprises a metal heating plate 2, an elastic membrane 3, a first filter plate 4, a second filter plate 5, a transmission chain 6, filter cloth 601, first filter cloth 602, second filter cloth 7, a filter cloth transmission device 8, a feeding channel 9, a heating chamber 10, a filter cloth driving device 11, a first filter cloth traction rod, 12, a second filter cloth traction rod, 13, a second rotating rod, 14, a first rotating rod
Detailed Description
To facilitate an understanding of the utility model, the utility model is described more fully below with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Fig. 1 is a schematic structural diagram of a sludge plate-frame dewatering and drying composite device with automatic filter cloth dropping and cleaning functions, which comprises a plurality of filter pressing units arranged in parallel in sequence, and is characterized in that each filter pressing unit comprises a first filter plate 3 and a second filter plate 4 which are alternately arranged, each filter pressing unit is provided with one first filter plate and one second filter plate, a filter pressing cavity is formed between the first filter plate 3 and the second filter plate 4, and filter cloth 6 is arranged in each filter pressing unit; and metal heating plates 1 are arranged on two sides of the first filter plate 3.
Heating chamber 9 is equipped with between hot plate 1 and the first filter plate 3, the both sides of second filter plate 4 are equipped with elastic diaphragm 2, be equipped with inlet and liquid outlet on the elastic diaphragm.
The top of the first filter plate 3 and the second filter plate 4 of every filter pressing unit is equipped with filter cloth drive arrangement 10, and the bottom is equipped with filter cloth washing spray set 7, drive chain 5 is equipped with on the filter cloth drive arrangement 10, the upper end of drive chain 5 is equipped with first filter cloth traction lever 11, and the lower extreme is equipped with second filter cloth traction lever 12, it includes first filter cloth 601 and second filter cloth 602 to filter the filter cloth, first filter cloth 601 one end is fixed on the first filter cloth traction lever 11 in upper portion, and the other end is walked around and is linked to each other with the second filter cloth traction lever 12 of lower part behind the first rotary rod 14 in filter cloth bottom, the one end of second filter cloth 602 also is fixed on the first filter cloth traction lever 11 in upper portion, and the other end is walked around the second rotary rod 13 of bottom and is linked to each other with the second filter cloth 12 of a set of filter pressing unit lower part afterwards.
In a preferred embodiment, as shown in fig. 2 and 1, the heating plate 1, the elastic membrane 2, the first filter plate 3 and the second filter plate 4 are provided with corresponding feed channels 8 for feeding materials into the filter press chamber.
In a preferred embodiment, the two ends of the heating chamber between the heating plate 1 and the first filter plate 3 are connected to an external circulation heating system.
In a preferred embodiment, a liquid inlet and a liquid outlet at two ends of the elastic membrane 2 are connected with a high-pressure squeezing circulating water pump.
In a preferred embodiment, the filter pressing device further comprises a negative pressure fan connected with the filter pressing cavity, wherein the negative pressure fan forms negative pressure on the surface of the mud cake through the water permeable channel and the filter cloth meshes, so that the gasification temperature of water in the mud cake is reduced.
In a preferred embodiment, the filter cloth transmission device comprises an upper first filter cloth traction rod 11 and a lower second filter cloth traction rod 12, the upper first filter cloth 601 and the second filter cloth 602 are pulled by the upper filter cloth traction rod 11, the first filter cloth and the second filter cloth of the previous filter pressing unit are pulled by the lower second traction rod, and the filter cloth is alternately pulled to be driven up and down, so that mud falling and filter cloth cleaning are facilitated.
In a preferred embodiment, a spray bar 7 for cleaning the filter cloth is also included in the filter cloth transmission.
In a preferred embodiment, the filter cloth driving device is further provided with a roller for assisting the movement of the transmission chain
In the above embodiment, the filter pressing device further comprises a pressing plate and a bottom plate, wherein the pressing plate and the bottom plate are located on two sides of the filter pressing unit and used for pressing the filter pressing unit.
Example 1
The operation of the sludge plate-frame dewatering and drying combined device with automatic filter cloth dropping and cleaning functions provided by the utility model is further described by the following embodiment 1, so that the skilled person can better understand the utility model.
The sludge with high water content (generally the water content is 90-99%) is pumped into the dehydrator through a high-pressure feed pump, the sludge enters a filter pressing cavity formed by oppositely clamping a first filter plate 3 and a second filter plate 4 through a feed channel 8 on the filter plates, the surfaces of the first filter plate 3 and the second filter plate 4 are provided with filter cloth structures 6, dry matters in the sludge are intercepted by the filter cloth structures 6, and a large amount of water in the sludge is discharged after being filtered out. When the sludge is continuously retained in the filter pressing cavities of the first filter plate 3 and the second filter plate 4 by the filter cloth structure 6, the pressure of feeding is increasingly higher, generally, the sludge feeding is stopped when the pressure reaches 8-16kg/cm2, at this time, the water content of a mud cake is about 80% (specifically, depending on sludge with different properties), then, water is pumped into a cavity formed by the elastic membrane 2 and the filter plates 4 through a liquid inlet by a high-pressure circulating squeezing water pump (water can be replaced by high-pressure compressed air), so that the maximum pressure of the elastic membrane 2 on the sludge is 15-25kg/cm2, depending on the type of the pump, the elastic membrane 2 squeezes the sludge due to water pressure, the water content of the sludge is reduced to about 65%, at this time, hot water with the temperature of 80-100 ℃ is pumped into a heating cavity formed between the stainless steel heating plate 1 and the filter plates 3 through the hot water pump, and the heat of the hot water is transferred to the sludge through the stainless steel plate 1, the sludge is heated, water permeable channels are formed between the stainless steel plate 1 and the filter cloth 6 and between the elastic membrane 2 and the filter cloth 6, water in the water permeable channels in the filter pressing chamber is sucked by the negative pressure fan, negative pressure (0.1-0.5 bar) is formed in the water permeable channels, and the water in the sludge is heated by the stainless steel plate to be heated, so that the heated water is gasified into steam to be pumped out of the system under the negative pressure condition. The mud cake is heated and then the moisture content is gasified, the moisture content of the mud is further reduced, and the moisture content is reduced from about 65 percent to about 30 percent. Then the hydro-cylinder of the dehydrator moves backwards to pull the filter plate to open the plate, the filter cloth driving device 10 starts to rotate, the filter cloth 6 is driven by the transmission chain 5 to move downwards, and the mud cake also moves downwards and automatically falls off. The filter cloth mud cake moves up and down after falling off, the spray head on the spray rod 7 is cleaned facing the filter cloth, and all the filter cloth is cleaned together while moving. The oil cylinder moves forwards again, and the filter plates are combined to prepare for next mud feeding.
From the above description, the utility model can directly dehydrate and dry the water content of the sludge from about 90-99% to about 30%, and the dehydrator has the characteristics of automatically dropping sludge from a sludge cake and synchronously cleaning filter cloth without manual assistance. The requirements of the industry on low water content of the sludge and unmanned automatic operation are perfectly met. Effectively solving the industrial pain point.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be within the technical scope of the present invention, and the technical solutions and novel concepts according to the present invention with the equivalent replacement or change should be covered within the scope of the present invention.

Claims (9)

1. A sludge plate-frame dehydration and drying composite device with automatic filter cloth falling and automatic cleaning functions comprises a plurality of filter pressing units which are sequentially arranged in parallel, and is characterized in that each filter pressing unit comprises a first filter plate (3) and a second filter plate (4) which are oppositely arranged, a filter pressing cavity is formed between the first filter plate (3) and the second filter plate (4), and filter cloth (6) is arranged in each filter pressing unit;
heating plates (1) are arranged on two sides of the first filter plate (3), a heating cavity (9) is arranged between the heating plates (1) and the first filter plate (3), elastic diaphragms (2) are arranged on two sides of the second filter plate (4), a liquid inlet and a liquid outlet are formed in the elastic diaphragms (2), and a squeezing cavity is formed between the elastic diaphragms (2) and the second filter plate (4);
the top of the first filter plate (3) and the top of the second filter plate (4) of each filter pressing unit are provided with a filter cloth driving device (10), the bottom of the filter cloth driving device (10) is provided with a filter cloth cleaning and spraying device, the upper end of the filter cloth driving device (10) is provided with a transmission chain (5), the upper end of the transmission chain (5) is provided with a first filter cloth traction rod (11), the lower end of the transmission chain is provided with a second filter cloth traction rod (12), the filter cloth comprises a first filter cloth (601) and a second filter cloth (602), one end of the first filter cloth (601) is fixed with the first filter cloth traction rod (11), the other end of the first filter cloth traction rod (14) is connected with the second filter cloth traction rod (12) by bypassing the second rotary rod (13), and when the transmission chain (5) is driven by the filter cloth driving device, the draw bar can be driven to move up and down, and the first filter cloth and the second filter cloth can move up and down.
2. The sludge plate-frame dewatering and drying composite device as claimed in claim 1, wherein the heating plate (1), the elastic membrane (2), the first filter plate (3) and the second filter plate (4) are correspondingly provided with feed channels (8) so that materials enter the filter-pressing cavity.
3. The sludge plate-frame dewatering and drying composite device as claimed in claim 2, wherein two ends of the heating cavity between the heating plate (1) and the first filter plate (3) are connected with an external circulation heating system.
4. The sludge plate-frame dewatering and drying compound device as claimed in claim 3, wherein the liquid inlet and the liquid outlet at the two ends of the elastic membrane (2) are connected with a high-pressure circulating water pump.
5. The sludge plate-frame dewatering and drying compound device as claimed in claim 4, further comprising a negative pressure fan connected with the filter pressing chamber.
6. The sludge plate-frame dewatering and drying compound device according to claim 5, further comprising a filter cloth transmission device (7), wherein the filter cloth transmission device (7) comprises a first rotating rod and a second rotating rod, the first rotating rod is wound with first filter cloth, and the second rotating rod is wound with second filter cloth.
7. The sludge plate-frame dewatering and drying compound device as claimed in claim 6, wherein the filter cloth transmission device (7) further comprises a spray rod for cleaning the filter cloth.
8. The sludge plate-frame dewatering and drying compound device as claimed in claim 7, wherein the filter cloth driving device (10) is further provided with rollers for assisting the movement of the transmission chain (5).
9. The sludge plate-frame dewatering and drying compound device as claimed in any one of claims 1 to 8, further comprising a pressing plate and a bottom plate, wherein the pressing plate and the bottom plate are located on two sides of the filter pressing unit.
CN202121399219.5U 2021-06-23 2021-06-23 Automatic mud self-cleaning's sludge sheet frame dehydration mummification set composite of falling of filter cloth Active CN215886761U (en)

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CN202121399219.5U CN215886761U (en) 2021-06-23 2021-06-23 Automatic mud self-cleaning's sludge sheet frame dehydration mummification set composite of falling of filter cloth

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CN202121399219.5U CN215886761U (en) 2021-06-23 2021-06-23 Automatic mud self-cleaning's sludge sheet frame dehydration mummification set composite of falling of filter cloth

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115282652A (en) * 2022-07-28 2022-11-04 第一环保(深圳)股份有限公司 Movable hydraulic platform traction mechanism of filter press
CN116354575A (en) * 2023-05-31 2023-06-30 长春市城建维护集团股份有限公司 Sludge treatment equipment and treatment method for cooperatively treating odor of sewage treatment plant

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115282652A (en) * 2022-07-28 2022-11-04 第一环保(深圳)股份有限公司 Movable hydraulic platform traction mechanism of filter press
CN116354575A (en) * 2023-05-31 2023-06-30 长春市城建维护集团股份有限公司 Sludge treatment equipment and treatment method for cooperatively treating odor of sewage treatment plant
CN116354575B (en) * 2023-05-31 2023-09-01 长春市城建维护集团股份有限公司 Sludge treatment equipment and treatment method for cooperatively treating odor of sewage treatment plant

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