Hydrated sludge dry-wet separation process and device based on municipal sweeping soil

Abstract

The invention discloses a hydrated sludge dry-wet separation process and device based on municipal street sweeping soil. The hydrated sludge dry-wet separation process comprises the following steps: receiving a stock bin and removing impurities; carrying out a material pouring synchronous dry-wet filtrate separation process on the pug subjected to the impurity removal process; carrying out a filtrate lifting process on the pug subjected to the material pouring synchronous dry-wet separation filtrate process; and carrying out a spiral extrusion process on the pug subjected to the filtrate lifting process. The technical problems that in the prior art, street sweeping soil with the too high water content is difficult to fully dehydrate before the transferring process, secondary pollution is caused by garbage falling to the ground, and the overall collecting and transporting efficiency of the street sweeping soil is not high are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of sludge treatment, and in particular, to a wet-dry separation process and device for hydrated sludge based on municipal street-sweeping soil. Background Art

[0002] Currently, to improve the quality of sanitation operations, the road sweeping operation has changed from mainly dry sweeping to mainly washing and sweeping. While ensuring high-quality operation, new problems have emerged, namely that the water content of street-sweeping soil is too high. A large amount of water will be contained in the street-sweeping soil collected by the road washing and sweeping operation, and a large amount of sewage will be mixed in again during the unloading and flushing process, resulting in the dry component's water content being too high to meet the receiving requirements of the transfer station. At the same time, the street-sweeping soil with too high a water content is also prone to clogging the mesh in the sorting equipment, and there is an easy potential for secondary pollution during the transfer to the sorting station, which in turn affects the service life of the transfer vehicle and other issues.

[0003] In the prior art, the treatment operation framework for street-sweeping soil with too high a water content usually only involves single draining without dehydration. The water content of the street-sweeping soil treated in this mode is still too high, and there are problems of leakage during the transfer of the materials transported to the transfer station, which cannot meet the receiving standards of the transfer station; or after the operation is completed, the collected street-sweeping soil is directly dumped at the soil unloading point or garbage bin, and then the method of air-drying is used to control the water content before collection and transfer. This mode has the drawback of garbage exposure, serious environmental pollution on-site, and the overall treatment takes a long time, occupies a large site area, and seriously affects the collection and transportation efficiency of street-sweeping soil. Summary of the Invention

[0004] Therefore, the present invention provides a wet-dry separation process and device for hydrated sludge based on municipal street-sweeping soil to solve the technical problems in the prior art that it is difficult to fully filter and dehydrate the street-sweeping soil with too high a water content before the transfer process, and it is easy to cause environmental pollution on-site and the overall collection and transportation efficiency of street-sweeping soil is not high.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A wet-dry separation process for hydrated sludge based on municipal street-sweeping soil, comprising the following steps:

[0007] The hopper receiving and impurity removal process;

[0008] For the mud material that has completed the impurity removal process, a process of simultaneous wet-dry separation and filtrate during dumping;

[0009] For the mud material that has completed the process of simultaneous wet-dry separation and filtrate during dumping, a process of lifting the filtrate;

[0010] For the mud material that has completed the process of lifting the filtrate, a screw extrusion process.

[0011] On the basis of the above technical solutions, the present invention is further described as follows:

[0012] As a further solution of the present invention,

[0013] The bin receiving and impurity removing process specifically includes:

[0014] The street sweeping soil receiving bin is arranged in a sunken manner based on the ground, and the top grid inlet of the receiving bin is lower than the pre-sewage outlet of the sweeper, so as to facilitate the sweeper to directly discharge sludge;

[0015] The effective storage volume of the receiving bin is set to be not less than 4m 3 , which has the functions of storing materials, rough separation and water drainage. During the sludge discharging process, the top grid inlet of the receiving bin intercepts large impurities, and the intercepted large impurities are cleaned and then transported away for treatment.

[0016] As a further solution of the present invention,

[0017] The process of synchronous dry-wet separation and filtrate for the mud after the impurity removing process specifically includes:

[0018] The mud after the impurity removing process reaches the inside of the receiving bin through the grid;

[0019] The bottom plate and both side plates of the receiving bin are provided with isolation screen meshes with a diameter range of 0.5-3 mm. During the pouring process, the isolation screen meshes of the receiving bin directly assist in the first-step dry-wet separation and filtrate, that is, the sewage in the mud is directly filtered and discharged through the mesh during the pouring process, significantly shortening the vehicle discharging time and reducing the disposal floor area;

[0020] At the same time, an anti-flushing mechanism is arranged outside the isolation screen mesh of the receiving bin, and the isolation screen mesh is regularly cleaned through the high-pressure water pump and control system of the anti-flushing mechanism to ensure the normal operation of the equipment separation function.

[0021] As a further solution of the present invention,

[0022] The process of lifting and filtrating the mud after the synchronous dry-wet separation and filtrate process specifically includes:

[0023] The mud after the synchronous dry-wet separation and filtrate process is further conveyed to the filter mud lifting structure. The filter mud lifting structure is connected by multiple keys of a reduction motor. The reduction motor drives the chains on both sides inside the receiving bin to shift synchronously. At the same time, the mud located on the isolation screen mesh in the receiving bin is scraped by the scraper between the two chains. Then, the mud located on the isolation screen mesh is obliquely lifted along the inclined surface at the output end of the receiving bin under the action of the scraper. A number of filtrate holes with an inner diameter range of 3-15 mm are arranged on the scraper, so as to complete the sufficient filtration of the obliquely lifted mud by gravity.

[0024] As a further solution of the present invention,

[0025] Performing a screw extrusion process on the mud material that has completed the filtrate lifting process specifically includes:

[0026] Further guiding the mud material that has completed the filtrate lifting process to a screw extrusion structure;

[0027] The screw extrusion structure is internally provided with a screw extrusion channel formed by a motor driving a screw blade. The motor driving the screw blade adopts a variable pitch and variable diameter design method, so that the screw extrusion channel can continuously switch the channel volume, and re-extrude the mud material that has completed the filtrate lifting process to further reduce the moisture content of the mud material.

[0028] A hydrated sludge dry-wet separation device for performing the described hydrated sludge dry-wet separation process, the hydrated sludge dry-wet separation device includes:

[0029] A guiding basic structure, including a horizontally arranged filter cavity part and a lifting filter cavity part that are communicatively arranged;

[0030] A filter impurity screen structure, correspondingly arranged at the top position of the horizontally arranged filter cavity part;

[0031] A filter mud lifting structure, which is sequentially arranged in a drivable manner between the horizontally arranged filter cavity part and the lifting filter cavity part, and the filter mud lifting structure is correspondingly located below the filter impurity screen structure.

[0032] As a further solution of the present invention,

[0033] The horizontally arranged filter cavity part is horizontally extended as a receiving bin;

[0034] The lifting filter cavity part is obliquely extended, and the bottom end part of the lifting filter cavity part is communicatively connected to one end part of the horizontally arranged filter cavity part.

[0035] As a further solution of the present invention,

[0036] The filter impurity screen structure includes a screen side baffle and a filter impurity mesh layer fixedly arranged inside the screen side baffle. The screen side baffle and the filter impurity mesh layer are both fixedly assembled and arranged at the top position of the horizontally arranged filter cavity part, and the filter impurity mesh layer is correspondingly communicatively arranged with the inside of the horizontally arranged filter cavity part.

[0037] As a further solution of the present invention,

[0038] The filter mud lifting structure includes a reduction motor, a first transmission sprocket, a second transmission sprocket, and a second transmission chain;

[0039] The first transmission sprocket is transfer-assembled inside one end of the flat filter chamber portion away from the lifting filter chamber portion, and the second transmission sprocket is transfer-assembled inside one end of the lifting filter chamber portion away from the flat filter chamber portion, and the first transmission sprocket and / or the second transmission sprocket can be rotatably driven;

[0040] The base of the reduction motor is fixedly mounted on the outer wall of the lifting filter chamber, and a first transmission chain is transmission-mounted between the rotational kinetic energy output end of the reduction motor and the second transmission sprocket;

[0041] The second transmission chain transmission assembly is arranged on the second transmission sprocket and the first transmission sprocket, and the second transmission chain is arranged along its travel path in a transmission connection with a plurality of filtrate lifting support plates in an interval manner;

[0042] The filtrate lifting support plate comprises a support plate body and a plurality of filtrate holes arranged in the support plate body.

[0043] As a further solution of the present invention, it also includes:

[0044] The spiral extrusion structure comprises a spiral extrusion shell and a motor-driven spiral blade which is connected and mounted at the center of the spiral extrusion shell;

[0045] A spiral extrusion channel is formed between the motor-driven spiral blade and the spiral extrusion housing, and the blade spacing of the motor-driven spiral blade is gradually reduced so that the spiral extrusion channel gradually forms an extrusion effect;

[0046] The spiral extrusion channel is connected to the output end of the filter mud lifting structure;

[0047] The spiral extrusion shell and the motor-driven spiral blades are arranged vertically or obliquely.

[0048] The present invention has the following beneficial effects:

[0049] 1. The process has the function of automatic continuous transmission dry-wet separation, which can significantly improve the removal rate and efficiency of water in the street-sweeping soil through multi-stage process integrated design, thereby effectively shortening the overall transportation operation cycle, reducing secondary pollution to the environment, and enhancing the practicality of the overall process function;

[0050] 2. The device can effectively serve as the basis for the conveying route of sludge filtration through the conveying infrastructure. At the same time, it can use the impurity filtering screen structure to correspond to the conveying infrastructure to achieve the first step of filtering out sundries such as sand blocks or branches, and can rely on the sludge lifting structure to correspond to the conveying infrastructure to further lift and convey the filtered sludge after the first step of impurity filtering. In this way, the separation and filtration of mud and liquid are achieved by relying on the self-weight of the water body, and the mud body after water filtration can be conveyed to an external container for reprocessing, improving the overall filtration efficiency and its functional practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. The structures, ratios, sizes, etc. shown in this specification are only used to cooperate with the content disclosed in the specification for those familiar with this technology to understand and read. Any modification of the structure, change in the ratio relationship, or adjustment of the size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should still fall within the scope that can be covered by the technical content disclosed in the present invention.

[0052] Figure 1 It is a schematic diagram of the overall process of the wet-dry separation process of hydrated sludge based on municipal street sweeping soil provided by an embodiment of the present invention.

[0053] Figure 2 It is an axonometric structure diagram of the wet-dry separation device for hydrated sludge based on municipal street sweeping soil provided by an embodiment of the present invention.

[0054] Figure 3 It is a top view structure diagram of the wet-dry separation device for hydrated sludge based on municipal street sweeping soil provided by an embodiment of the present invention.

[0055] Figure 4 It is a schematic diagram of the internal structure of the side view in one direction of the wet-dry separation device for hydrated sludge based on municipal street sweeping soil provided by an embodiment of the present invention.

[0056] Figure 5 It is a side view structure diagram in the other direction of the wet-dry separation device for hydrated sludge based on municipal street sweeping soil provided by an embodiment of the present invention.

[0057] Figure 6 It is a schematic diagram of the overall application state structure of the wet-dry separation device for hydrated sludge based on municipal street sweeping soil provided by an embodiment of the present invention.

[0058] Figure 7 It is an axonometric structure diagram of the screw extrusion structure in the wet-dry separation device for hydrated sludge based on municipal street sweeping soil provided by an embodiment of the present invention.

[0059] Figure 8Schematic diagram of the internal structure of the screw extrusion structure in the hydrated sludge dry-wet separation device based on municipal street-sweeping soil provided by the embodiment of the present invention.

[0060] In the drawings, the list of components represented by each reference numeral is as follows:

[0061] Conducting basic structure 1: horizontal filter cavity part 11, lifting filter cavity part 12, filter cavity outlet 13;

[0062] Filter impurity screen structure 2: screen side baffle 21, filter impurity mesh layer 22, dumping side baffle 23;

[0063] Filter mud lifting structure 3: reduction motor 31, first driving sprocket 32, second driving sprocket 33, steering tensioning sprocket 34, first driving chain 35, second driving chain 36, filtrate lifting support plate 37;

[0064] Screw extrusion structure 4: screw extrusion housing 41, motor-driven screw blade 42, screw extrusion inlet 43, screw extrusion outlet 44, screw extrusion channel 45. Specific implementation mode

[0065] The following specific embodiments illustrate the implementation manners of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope protected by the present invention.

[0066] Terms such as "upper", "lower", "left", "right", "middle", etc. cited in this specification are only for the convenience of description and are not used to limit the scope of implementation of the present invention. The change or adjustment of their relative relationships shall also be regarded as the scope of implementation of the present invention without substantial change in the technical content.

[0067] As Figure 1 shown, the embodiment of the present invention provides a dry-wet separation process for hydrated sludge based on municipal street-sweeping soil, which has an automatic continuous conduction type dry-wet separation function, can significantly improve the removal rate and efficiency of the moisture in the street-sweeping soil through multi-stage process integrated design, and can effectively shorten the overall transportation operation cycle, reduce secondary pollution to the environment, and enhance the practicality of the overall process function. The specific steps are as follows:

[0068] S1: Hopper receiving and impurity removal process;

[0069] The specific process is as follows: The street-sweeping soil receiving hopper is arranged based on ground sinking, and the top grid inlet of the receiving hopper is lower than the pre-sewage discharge port of the sweeper, so as to facilitate the sweeper to directly discharge the sludge;

[0070] The effective storage volume of the receiving bin is set to be not less than 4 m³ 3 , which has the functions of storing materials, rough separation, and water drainage. During the sludge discharging process, large impurities are intercepted by the top grid inlet of the receiving bin, and the intercepted large impurities are cleaned and then transported away for treatment;

[0071] S2: Perform the process of synchronously separating wet and dry filtrate during the dumping of the mud material that has completed the impurity removal process;

[0072] The specific process is as follows: The mud material that has completed the impurity removal process passes through the grid and reaches the inside of the receiving bin;

[0073] The bottom plate and both side plates of the receiving bin are provided with isolation screens with a diameter range of 0.5 - 3 mm. During the dumping process, the isolation screens of the receiving bin directly assist in the first-step wet and dry separation of the filtrate, that is, the sewage in the mud material is directly filtered and discharged through the screen during the dumping process, significantly shortening the vehicle unloading time and reducing the disposal floor area;

[0074] Meanwhile, an anti-flushing mechanism is provided outside the isolation screen of the receiving bin, and the isolation screen is regularly cleaned by the high-pressure water pump and control system of the anti-flushing mechanism to ensure the normal operation of the equipment's separation function;

[0075] S3: Perform the process of lifting the filtrate for the mud material that has completed the process of synchronously separating wet and dry filtrate during the dumping;

[0076] The specific process is as follows: The mud material that has completed the process of synchronously separating wet and dry filtrate during the dumping is further conveyed to the filter mud lifting structure. The filter mud lifting structure is connected by multiple keys of a reduction motor. The reduction motor drives the chains on both sides inside the receiving bin to shift synchronously. At the same time, the mud material located on the isolation screen in the receiving bin is scraped by the scraper between the two chains. Then, the mud material located on the isolation screen is obliquely lifted along the inclined plane at the output end of the receiving bin by the action of the scraper. A number of filtrate holes with an inner diameter range of 3 - 15 mm are provided on the scraper, so as to complete the full filtration of the obliquely lifted mud material by gravity;

[0077] S4: Perform the spiral extrusion process for the mud material that has completed the process of lifting the filtrate;

[0078] The specific process is as follows: The mud material that has completed the process of lifting the filtrate is further conveyed to the spiral extrusion structure;

[0079] The spiral extrusion structure is internally provided with a spiral extrusion channel formed by a motor-driven spiral blade. The motor-driven spiral blade adopts a design method of variable pitch and variable diameter, so that the spiral extrusion channel can continuously switch the channel volume to perform secondary extrusion on the mud material that has completed the process of lifting the filtrate, in order to further reduce the moisture content of the mud material, and that's it.

[0080] Such asFigures 2 to 8 As shown in the figure, an embodiment of the present invention further provides a hydrated sludge dry-wet separation device for performing a hydrated sludge dry-wet separation process, including a conveying basic structure 1, a filtering impurity screen structure 2, and a filter sludge lifting structure 3, which can effectively serve as the conveying route basis for sludge filtration through the conveying basic structure 1. At the same time, the filtering impurity screen structure 2 can be used to filter out sundries such as sand blocks or branches corresponding to the conveying basic structure 1 in the first step, and the filter sludge lifting structure 3 can be used to further lift and convey the filter sludge after the first-step impurity filtration corresponding to the conveying basic structure 1, so as to realize mud-liquid separation filtration by means of the self-weight of the water body, and the mud body after water filtration can be conveyed to an external container, improving the overall filtration efficiency. The specific settings are as follows:

[0081] Please refer to Figures 2 to 4 , the conveying basic structure 1 includes a horizontally placed filter cavity part 11 and a lifting filter cavity part 12 that are integrally and fixedly connected; wherein, the horizontally placed filter cavity part 11 is horizontally extended as a receiving bin, the lifting filter cavity part 12 is obliquely extended, and the bottom end part of the lifting filter cavity part 12 is connected and communicated with one side end part of the horizontally placed filter cavity part 11, and a filter cavity outlet 13 is opened below the top end of the lifting filter cavity part 12, so as to form a lifting conveying and discharging route for sludge filtration.

[0082] Please continue to refer to Figures 2 to 4 , the filtering impurity screen structure 2 includes a screen side baffle 21 and a filtering impurity mesh layer 22 fixedly arranged inside the screen side baffle 21. The screen side baffle 21 and the filtering impurity mesh layer 22 are both fixedly assembled on the top of the horizontally placed filter cavity part 11, and the filtering impurity mesh layer 22 is correspondingly communicated with the inside of the horizontally placed filter cavity part 11, so as to effectively filter out sundries such as sand blocks or branches corresponding to the conveying basic structure 1 by using the filtering impurity mesh layer 22.

[0083] As a preferred solution of this embodiment, the screen side baffle 21 is formed with a mud placement port, and the outer edge height of the screen side baffle 21 gradually increases from the side of the mud placement port to its opposite side, so as to improve the blocking effect of the opposite side of the mud placement port through the screen side baffle 21, thereby reducing overflow during mud pouring.

[0084] More preferably, please refer to Figure 6 , the screen side baffle 21 is also fixedly provided with a pouring side baffle 23 corresponding to both sides of the mud placement port, so as to further improve the anti-overflow property of pouring blocking through the pouring side baffle 23.

[0085] Please refer to Figure 4 and Figure 5The filter mud lifting structure 3 includes a reduction motor 31, a first transmission sprocket 32, a second transmission sprocket 33, a direction-adjusting tensioning sprocket 34, a first transmission chain 35, a second transmission chain 36 and a filtrate lifting support plate 37; wherein the base of the reduction motor 31 is fixedly mounted on the outer wall of the lifting filter chamber 12; the first transmission sprocket 32, the second transmission sprocket 33 and the direction-adjusting tensioning sprocket 34 are each provided with two groups, and the two groups of the first transmission sprockets 32 are respectively and one-to-one correspondingly transferred and mounted on both sides of one end of the flat filter chamber 11 away from the lifting filter chamber 12, and the two groups of the second transmission sprockets 33 are respectively and one-to-one correspondingly transferred and mounted on both sides of one end of the lifting filter chamber 12 away from the flat filter chamber 11, and the two groups of the direction-adjusting tensioning sprockets 34 are both transferred and mounted at the connection position of the flat filter chamber 11 and the lifting filter chamber 12; the first transmission chain 35 is respectively connected to the reduction motor 3 1 and the two groups of second transmission sprockets 33 are connected by transmission assembly; the second transmission chain 36 is provided with two groups, and the two groups of second transmission chains 36 are respectively and one by one correspondingly and sequentially transmission-assembled on the two groups of second transmission sprockets 33, the two groups of the adjustment tensioning sprockets 34 and the two groups of the first transmission sprockets 32, and a plurality of filtrate lifting support plates 37 are arranged between the two groups of the second transmission chains 36 along their travel paths in an interval transmission-connected manner, so as to drive the second transmission chain 36 through the first transmission chain 35 by outputting the rotational kinetic energy through the reduction motor 31, and the second transmission chain 36 cooperates with the filtrate lifting support plate 37 to further lift and guide the filtrate along the bottom inner wall of the lifting filter chamber part 12 after the first step of filtering impurities, so that the filtrate can be further separated and filtered automatically by the dead weight of the water body and discharged through the filter chamber outlet 13, thereby significantly improving the overall filtration efficiency.

[0086] The filtrate lifting support plate 37 includes a support plate body and a plurality of filtrate holes provided in the support plate body, so as to lift the filter mud through the support plate body and further enhance the overall filtrate effect with the help of the filtrate holes.

[0087] Please refer to Figures 6 to 8 The hydrated sludge conveying and filtering device also includes a spiral extrusion structure 4, which includes a spiral extrusion shell 41 and a motor-driven spiral blade 42 connected and mounted at the center position inside the spiral extrusion shell 41. A spiral extrusion channel 45 is formed between the motor-driven spiral blade 42 and the spiral extrusion shell 41, and the blade spacing of the motor-driven spiral blade 42 is gradually reduced so that the spiral extrusion channel 45 gradually forms an extrusion effect.

[0088] A spiral extrusion inlet 43 is formed at the top of one end of the spiral extrusion housing 41 corresponding to the spiral extrusion channel 45, and a spiral extrusion outlet 44 is formed at the bottom of the other end of the spiral extrusion housing 41 corresponding to the spiral extrusion channel 45. The spiral extrusion inlet 43 and the filter chamber outlet 13 are connected in series and communicated to drive the rotation of the spiral blade 42 by a motor to drive the mud body after the filtrate is lifted, so that the mud body is spirally extruded through the spiral extrusion channel 45, further improving the mud-liquid separation effect.

[0089] It should be noted that the spiral extrusion housing 41 and the motor-driven spiral blade 42 are arranged vertically or obliquely to complete the lifting type extrusion and conduction, further enhancing the overall filtrate effect.

[0090] Although the present invention has been described in detail with general descriptions and specific embodiments above, on the basis of the present invention, some modifications or improvements can be made, which are obvious to those skilled in the art. Therefore, these modifications or improvements made without departing from the spirit of the present invention all fall within the scope of protection required by the present invention.

Claims

1. A wet-dry separation process for hydrated sludge based on municipal street sweeping soil, characterized in that, It includes the following steps: The bin receiving and impurity removal process; The process of pouring the mud that has completed the impurity removal process and synchronously separating the filtrate by wet and dry methods; The process of lifting the filtrate for the mud that has completed the process of pouring and synchronously separating the filtrate by wet and dry methods; The process of screw extrusion for the mud that has completed the process of lifting the filtrate.

2. The wet and dry separation process of hydrated sludge based on municipal street sweeping soil according to claim 1, characterized in that The bin receiving and impurity removal process specifically includes: Based on the ground sinking layout, a street sweeping soil receiving bin is arranged, and the top grid inlet of the receiving bin is lower than the pre-sewage outlet of the street sweeper, so as to facilitate the street sweeper to directly unload the sludge; The effective storage volume of the receiving bin is set to be not less than 4 m 3 , which has the functions of storing materials, rough separation and water drainage. During the sludge discharging process, the top grid inlet of the receiving bin intercepts large impurities, and the intercepted large impurities are cleaned and then transported away for treatment.

3. The wet and dry separation process of hydrated sludge based on municipal street sweeping soil according to claim 2, characterized in that The process of pouring the mud that has completed the impurity removal process and synchronously separating the filtrate by wet and dry methods specifically includes: The mud that has completed the impurity removal process reaches the inside of the receiving bin through the grid; The bottom plate and both side plates of the receiving bin are provided with isolation screen meshes with a diameter range of 0.5 - 3 mm. When pouring the material, the isolation screen meshes of the receiving bin directly assist in the first step of wet and dry separation of the filtrate, that is, the sewage in the mud is directly filtered and discharged through the mesh during pouring, significantly shortening the vehicle unloading time; At the same time, an anti-flushing mechanism is arranged outside the isolation screen mesh of the receiving bin, and the high-pressure water pump and control system of the anti-flushing mechanism regularly clean the isolation screen mesh to ensure the normal operation of the equipment separation function.

4. The wet and dry separation process of hydrated sludge based on municipal street sweeping soil according to claim 3, characterized in that The process of lifting the filtrate for the mud that has completed the process of pouring and synchronously separating the filtrate by wet and dry methods specifically includes: The mud that has completed the process of pouring and synchronously separating the filtrate by wet and dry methods is further conveyed to the filter mud lifting structure. The filter mud lifting structure is connected by multiple keys of a reduction motor. Through the drive of the reduction motor, the chains on both sides inside the receiving bin are synchronously shifted. At the same time, the mud located on the isolation screen mesh in the receiving bin is scraped by the scraper between the two chains. Then, the mud located on the isolation screen mesh is obliquely lifted along the inclined plane at the output end of the receiving bin under the action of the scraper. A number of filtrate holes with an inner diameter range of 3 - 15 mm are provided on the scraper, so as to complete the sufficient filtration of the obliquely lifted mud by gravity.

5. The wet and dry separation process of hydrated sludge based on municipal street sweeping soil according to claim 4, characterized in that The process of screw extrusion for the mud that has completed the process of lifting the filtrate specifically includes: The mud that has completed the process of lifting the filtrate is further conveyed to the screw extrusion structure; The screw extrusion structure is internally provided with a screw extrusion channel formed by a motor-driven screw blade. The motor-driven screw blade adopts a design method of variable pitch and variable diameter, so that the screw extrusion channel can continuously switch the channel volume, and the mud that has completed the process of lifting the filtrate is extruded again to further reduce the moisture content of the mud.

6. A hydrated sludge dry-wet separation device for performing the hydrated sludge dry-wet separation process as described in claim 5, characterized in that, The wet and dry separation device for hydrated sludge includes: The conveying basic structure includes a horizontally arranged filter cavity part and a lifting filter cavity part that are connected and communicated; The filter impurity screen structure is correspondingly arranged at the top position of the horizontally arranged filter cavity part; The filter mud lifting structure can be drivably arranged in sequence at the horizontal filter chamber part and the lifting filter chamber part, and the filter mud lifting structure is correspondingly located below the filter screen structure.

7. The hydrated sludge dry-wet separation device based on municipal street sweeping soil according to claim 6 is characterized in that: The flat filter chamber portion is arranged to extend horizontally as a receiving silo; The lifting filter chamber portion is arranged to extend obliquely, and the bottom end portion of the lifting filter chamber portion is connected to one side end portion of the flat filter chamber portion.

8. The hydrated sludge dry-wet separation device based on municipal street sweeping soil according to claim 6 is characterized in that: The filter screen structure includes a screen side baffle and a filter screen layer fixedly arranged on the inner side of the screen side baffle. The screen side baffle and the filter screen layer are both fixedly assembled at the top position of the horizontal filter chamber, and the filter screen layer is correspondingly connected to the inside of the horizontal filter chamber.

9. The hydrated sludge dry-wet separation device based on municipal street sweeping soil according to claim 6 is characterized in that: The filter mud lifting structure includes a reduction motor, a first transmission sprocket, a second transmission sprocket and a second transmission chain; The first transmission sprocket is transfer-assembled inside one end of the flat filter chamber portion away from the lifting filter chamber portion, and the second transmission sprocket is transfer-assembled inside one end of the lifting filter chamber portion away from the flat filter chamber portion, and the first transmission sprocket and / or the second transmission sprocket can be rotatably driven; The base of the reduction motor is fixedly mounted on the outer wall of the lifting filter chamber, and a first transmission chain is transmission-mounted between the rotational kinetic energy output end of the reduction motor and the second transmission sprocket; The second transmission chain transmission assembly is arranged on the second transmission sprocket and the first transmission sprocket, and the second transmission chain is arranged along its travel path in a transmission connection with a plurality of filtrate lifting support plates in an interval manner; The filtrate lifting support plate comprises a support plate body and a plurality of filtrate holes arranged in the support plate body.

10. The hydrated sludge dry-wet separation device based on municipal street sweeping soil according to claim 6, characterized in that, Also includes: The spiral extrusion structure comprises a spiral extrusion shell and a motor-driven spiral blade which is connected and mounted at the center of the spiral extrusion shell; A spiral extrusion channel is formed between the motor-driven spiral blade and the spiral extrusion shell, and the blade spacing of the motor-driven spiral blade is gradually reduced, and the diameter of the motor-driven spiral blade and the diameter of the spiral extrusion shell are also gradually reduced synchronously, so that the spiral extrusion channel gradually forms an extrusion effect; The spiral extrusion channel is connected to the output end of the filter mud lifting structure; The spiral extrusion shell and the motor-driven spiral blades are arranged vertically or obliquely.

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