A device for resource utilization of water conservancy construction sludge carbon

Abstract

The application discloses a water conservancy construction sludge carbon resource utilization device, and relates to the technical field of sludge resource treatment, which comprises a filter cartridge, a cover shell and a heat exchanger. The filter cartridge is internally provided with heat exchange pipes. The cover shell is coaxially and sealingly sleeved outside the filter cartridge and forms an annular space. The annular space is provided with an air inlet pipe and an air outlet pipe at two ends. The two groups of pipelines of the heat exchanger are heat-coupled. One group of pipelines is connected with the heat exchange pipes to form a heat exchange loop, and the other group of pipelines is connected with the waste gas pipeline of a carbonization furnace and the air inlet pipe. After waste gas of the carbonization furnace is recycled by the heat exchanger, the waste gas is introduced into the annular space to form annular airflow, which can break the water film on the surface of the filter cartridge, increase the pressure difference between the inside and outside of the filter hole, improve the sludge dewatering efficiency, and remove the waste gas particulate matter carried by the airflow. The carbonization furnace waste heat resource utilization, sludge efficient dewatering and waste gas purification integrated operation can save energy and reduce emissions, and has remarkable environmental protection benefits.

Description

Technical Field

[0001] This invention relates to the field of sludge treatment technology, and in particular to a device for the resource utilization of sludge carbon from water conservancy construction. Background Technology

[0002] Sludge generated during water conservancy construction is often utilized as a resource by carbonizing it into sludge carbon.

[0003] Currently, the carbonization process for sludge mainly involves the following steps: First, the sludge undergoes dewatering pretreatment, then it is fed into a carbonization furnace. Under oxygen-free conditions, the sludge is decomposed and carbonized through high-temperature heating, ultimately yielding sludge charcoal, which can be used for soil improvement and pollutant adsorption. The sludge dewatering pretreatment process can be carried out using equipment such as screw press dewatering machines and plate and frame filter presses. Screw press dewatering machines are commonly used; during operation, they dewater the sludge by squeezing it through a screw, causing the water within the sludge to pass through the filter cartridge. However, in practical applications, it has been found that as the water is squeezed out of the filter holes on the filter cartridge, the filtrate flows down the outer wall of the filter cartridge and is then discharged through a collection tank at the bottom of the cartridge. However, as the filtrate flows down the surface of the filter cartridge, a continuous water film and filter layer form on the surface of the lower filter holes, resulting in a smaller pressure difference between the inside and outside of the lower filter holes and a weakened permeation force; this leads to a decrease in the filtrate discharge efficiency of the lower filter holes. Although the prior art, patent application number CN202511205331.3, discloses a scheme that achieves centrifugation by rotating the filter cylinder to quickly throw the filtrate away from the filter cylinder, the rotation speed of the filter cylinder is limited in actual application, and the centrifugation effect is also limited.

[0004] Furthermore, to meet environmental protection requirements and energy utilization efficiency, the exhaust gas emitted from the sludge carbonization furnace needs to be treated to recover energy and particulate matter. In response to this problem, invention patent application number 202511309202.9 provides a pyrolysis carbonization treatment system and method for sludge, which treats the exhaust gas using a waste heat boiler and a bag filter. This requires additional dust removal equipment and a waste heat boiler, and these methods are currently commonly used in the field.

[0005] However, in the actual sludge treatment process, the sludge extrusion and dewatering step often involves adding a sludge heating device to improve the dewatering effect. Furthermore, wastewater is generated after sludge dewatering, and using the water flow to filter particulate matter in the exhaust gas is an effective method for removing particulate matter. Therefore, how to organically combine the waste heat generated by the carbonization furnace with the sludge dewatering device, effectively utilizing the waste heat to heat the sludge dewatering device, and using the wastewater generated during dewatering to filter particulate matter in the exhaust gas, is of great significance for environmental friendliness and energy conservation and emission reduction. Summary of the Invention

[0006] The purpose of this invention is to solve the above-mentioned problems by providing a device for the resource utilization of sludge from water conservancy construction.

[0007] To achieve the above objectives, the technical solution of the present invention is: a device for the resource utilization of sludge from water conservancy construction, comprising: The filter cartridge is equipped with heat exchange tubes inside; The cover is coaxially disposed outside the filter cartridge, and its two ends are sealed to the two ends of the filter cartridge. An annular space is formed between the inner circumferential surface of the cover and the outer circumferential surface of the filter cartridge. Along the axial direction, an air inlet pipe and an air outlet pipe are provided at both ends of the annular space. The heat exchanger includes two thermally coupled pipes. The beginning and end of one pipe are connected to both ends of the heat exchange tube, and one end of the other pipe is connected to the exhaust gas discharge pipe of the carbonization furnace, and the other end is connected to the inlet pipe. After the airflow flows into the annular space through the air inlet pipe, it can form a rotating airflow around its axis within the annular space. The rotating airflow can flow from one end of the air inlet pipe to one end of the air outlet pipe.

[0008] Furthermore, the air outlet pipe is connected to an air pump, and an air-water separator is installed between the air pump and the air outlet pipe.

[0009] Furthermore, multiple manifolds are connected around the outer circumference of the casing along its own axis, and the other end of the manifolds is connected to the air intake pipe. The axis of the manifolds does not intersect with the axis of the filter cartridge.

[0010] Furthermore, along the material feeding direction inside the filter cartridge, the air outlet pipe is located downstream of the air inlet pipe.

[0011] Furthermore, it also includes a flow guiding component, the flow guiding component comprising: A plurality of spiral blades are provided, which are spaced apart around the axis of the annular space and are coaxially arranged within the annular space; Ring plate one and ring plate two are respectively located at both ends of the spiral blade, and their outer and inner circumferential surfaces are respectively circumferentially sliding and sealingly fitted with the inner circumferential surface of the cover and the outer circumferential surface of the filter cartridge. Both ring plate one and ring plate two are provided with channels corresponding to the spiral blade. The air inlet pipe and air outlet pipe are respectively located on opposite sides of ring plate one and ring plate two.

[0012] Furthermore, the channels provided on the first and second ring plates correspond to the blade surfaces of the guide vanes.

[0013] Furthermore, on the opposite sides of the first and second ring plates, cylindrical bodies are coaxially arranged. The cylindrical bodies are slidably sealed to the outer circumferential surface of the filter cylinder, and the opposite end faces of the two cylindrical bodies are slidably sealed to the two end faces of the cover respectively. The filter holes on the filter cylinder are arranged in the area between the two cylindrical bodies.

[0014] Furthermore, it also includes a driving device, which is drivenly connected to the flow guiding assembly and is used to drive the flow guiding assembly to rotate around the axis of the filter cartridge. The rotation direction of the flow guiding assembly is from the back of the spiral blade towards the surface of the blade.

[0015] Furthermore, along the material feeding direction inside the filter cartridge, the first ring plate is located upstream of the second ring plate. The opposite sides of the first and second ring plates form an annular flow space between the inner sidewall of the cover and the corresponding outer peripheral surface of the cartridge. The air inlet pipe is connected to the flow space corresponding to the first ring plate. The cylinder connected to the ring plate is provided with an annular folding plate coaxial with the filter cartridge. The other end of the annular folding plate abuts against the inner side of the cover to form a sliding seal fit, so that the annular folding plate divides the flow space corresponding to the ring plate into two non-communicating spaces: space one and space two. Located within the second space, the outer side of the cylinder is coaxially provided with a transmission surface that is driven and connected to the driving device.

[0016] Furthermore, along the radial direction of the filter cartridge, a ring plate three is coaxially arranged in the middle region of the ring plate two. The ring plate three includes two ends respectively disposed on both sides of the ring plate two, and the ring plate three divides the channel two on the ring plate two into two parts. One end of the ring plate three, away from the ring plate one, is bent away from the axis to form a folded plate two. The folded plate two slides and seals with the inner circumferential surface of the cover, thereby dividing the flow space corresponding to the ring plate two into space three and space four. The air outlet pipe includes pipe one and pipe two, which are connected to space three and space four respectively.

[0017] The resource utilization device for sludge from water conservancy construction disclosed in this invention has the following advantages compared with the prior art: 1. This device fully recovers and utilizes the waste heat from the sludge carbonization furnace, replacing the traditional dedicated heating equipment for sludge dewatering, significantly reducing the energy consumption cost of sludge pretreatment, and realizing the resource-based reuse of industrial waste heat.

[0018] 2. The water film on the surface of the filter cartridge is broken by the high-speed annular centrifugal airflow, which increases the pressure difference between the inside and outside of the filter holes and improves the dewatering efficiency.

[0019] 3. Combined with a spiral blade mechanical scraping anti-clogging structure, multiple methods work together to improve the sludge dewatering rate.

[0020] 4. By utilizing the wastewater generated from sludge dewatering to carry away particulate matter in the exhaust gas from the carbonization furnace, the exhaust gas dust removal and purification and wastewater recovery are completed simultaneously. There is no need to add separate dust removal and waste heat recovery equipment, which simplifies the overall structure of the equipment, reduces equipment investment and operation and maintenance costs, and reduces the emission of pollutants in exhaust gas and wastewater. Attached Figure Description

[0021] Figure 1This is a schematic diagram of the overall structure of a device for the resource utilization of sludge from water conservancy construction according to the present invention.

[0022] Figure 2 This is a schematic diagram of the sludge dewatering device in the present invention. Figure 1 .

[0023] Figure 3 This is a schematic diagram of the sludge dewatering device in the present invention. Figure 2 .

[0024] Figure 4 This is a cross-sectional view of the sludge dewatering device in this invention.

[0025] Figure 5 This is a schematic diagram of the structure of the hidden outer shell of the sludge dewatering device in this invention. Figure 1 .

[0026] Figure 6 This is a schematic diagram of the structure of the hidden outer shell of the sludge dewatering device in this invention. Figure 2 .

[0027] Figure 7 This is a schematic diagram of the flow guiding and scraping assembly in this invention.

[0028] Figure 8 This is a cross-sectional view of the hidden outer shell of the sludge dewatering device in this invention.

[0029] Figure 9 for Figure 8 The diagram shows a partially enlarged structural schematic at point A in this invention.

[0030] Figure 10 for Figure 8 The diagram shows a partially enlarged structural schematic at point B in this invention.

[0031] Figure 11 This is a schematic diagram of the axial structure of the hidden outer shell of the sludge dewatering device in this invention.

[0032] Figure 12 This is a schematic diagram of the hidden outer shell and partial cover of the sludge dewatering device in this invention.

[0033] Figure 13 for Figure 12 The diagram shows a partially enlarged structural schematic at point C in this invention.

[0034] Figure 14 for Figure 12 The diagram shows a partially enlarged structural schematic at point D in this invention.

[0035] Figure 15 This is a schematic diagram of the axial structure of the flow guiding and scraping assembly in this invention.

[0036] In the diagram: 1. Dehydration device; 10. Feed inlet; 102. Power shaft; 1020. Screwdriver blades; 103. Outer shell; 104. Filter cartridge; 105. Discharge outlet; 11. Water tank; 12. Air inlet pipe; 120. Manifold; 13. Air outlet pipe; 130. Pipe 1; 131. Pipe 2; 14. Protective casing; 17. Support plate; 2. Heat exchange tube; 20. Drive unit; 201. Transmission belt; 202. Tensioner; 3. First air-water separator; 4. Air pump; 5. Second air-water separator 6. Heat exchanger; 7. Carbonization furnace; 8. Cover; 80. Annular space; 81. Flow guide assembly; 810. Spiral blade; 811. Annular plate one; 8110. Channel one; 812. Cylinder one; 8120. Transmission surface; 8121. Annular folding plate one; 813. Cylinder two; 814. Annular plate two; 8140. Channel two; 815. Annular plate three; 8150. Folding plate two; 82. Transmission shaft; a. Space one; b. Space two; c. Space three; d. Space four; 9. Airflow. Detailed Implementation

[0037] The present invention will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic diagrams, illustrating only the basic structure of the invention in a schematic manner, and therefore only show the components relevant to the invention. Example

[0038] This embodiment discloses a resource utilization device for sludge carbon from water conservancy construction, referring to... Figures 1 to 4 The core structure of this device includes three main components: a filter cartridge 104, a housing 8, and a heat exchanger 6. An outer shell 103 is provided externally. The filter cartridge includes an inlet 10 and an outlet 105. The filter cartridge 104 is the core filtration component of the screw extrusion dewatering machine. A power shaft 102 is coaxially arranged inside the filter cartridge 104, and auger blades 1020 are arranged on the outer circumference of the power shaft 102. The heat exchange tube 2 can be arranged inside the filter cartridge 104. In this application, a cavity is provided inside the power shaft 102, and the heat exchange tube 2 extends into the cavity to achieve heat exchange with the power shaft 102. The heat exchange tube 2 is made of high-temperature resistant metal tubing. The housing 8 is coaxially fitted onto the outside of the filter cartridge 104 and can be divided into two detachably connected parts. The two ends of the housing 8 are sealed to the outer walls of the two ends of the filter cartridge 104, specifically using commonly used sealing fillers and sliding sealing rings. This creates a closed annular space 80 between the inner circumference of the housing 8 and the outer circumference of the filter cartridge 104.

[0039] Along the axial direction of the filter cartridge 104, the two ends of the annular space 80 are respectively connected to the air inlet pipe 12 and the air outlet pipe 13, forming an inlet and outlet channel for rotating airflow. The heat exchanger 6 is a dual-pipe thermal coupling structure, with two sets of pipes closely fitted for heat exchange and independent medium flow. One set of pipes is sealed and connected to the two ends of the heat exchange tube 2 inside the filter cartridge 104, forming a closed-loop heat exchange circuit, and the circulation power can be provided by the air pump 4 in the middle; the other set of pipes is connected to the exhaust pipe of the sludge carbonization furnace 7 at one end and connected to the air inlet pipe 12 of the cover 8 at the other end.

[0040] Through the above-described configuration, this application achieves secondary utilization of the waste heat from the carbonization furnace 7 via a dual-pipe heat exchanger 6. An independent annular airflow chamber is constructed through the coaxial sealing structure of the casing 8 and the filter cartridge 104, limiting the axial flow path of the airflow. The high-temperature waste gas discharged from the carbonization furnace 7 first enters the heat exchanger 6 for heat exchange, and the cooled waste gas then enters the annular space 80. Firstly, the waste heat from the carbonization furnace 7 is used to heat the entire filter cartridge 104 via the heat exchanger 6, increasing the sludge temperature and improving the evaporation efficiency of water within the sludge. This enhances dewatering efficiency through the dual effects of evaporation and pressure filtration, and directly utilizes the waste heat within the entire resource utilization device for heating, eliminating the need for additional waste heat recovery equipment. Secondly, the heat-exchanged waste gas enters the annular space 80, forming an axially rotating airflow around the filter cartridge 104. The rapid flow of this rotating airflow breaks down the water film and filter layer formed on the outer wall of the filter cartridge 104. Furthermore, under the centrifugal force of the annular airflow, a pressure difference is created radially within the annular space 80, which, in turn, reduces the sludge temperature. A negative pressure is formed on the outer surface of the filter cylinder 104, thereby increasing the pressure difference between the inside and outside of the filter cylinder 104, improving the permeation power of the filter holes, and thus improving the dewatering efficiency of the filter press; thirdly, when the exhaust gas flows into the annular space 80, the dewatering device 1 works simultaneously to perform filter press, and the filtrate can flow together with the rotating airflow in the annular space 80. The exhaust gas and filtrate are mixed, and the particulate matter in the exhaust gas can come into contact with the filtrate, thereby effectively removing the particulate matter in the exhaust gas and achieving the effect of removing particulate matter in the exhaust gas; fourthly, the waste heat of the carbonization furnace 7 is utilized as a resource, replacing the traditional additional heating device, which meets the operational requirements of energy conservation, emission reduction, environmental protection and resource utilization. Example

[0041] In this embodiment, an air pump 4 is connected to the end of the air outlet pipe 13 of the cover 8 to provide negative pressure power for the rotating airflow inside the annular space 80, thereby accelerating the discharge of airflow, filtrate and impurities. At the same time, a gas-liquid separator is installed in series between the negative pressure air pump 4 and the air outlet pipe 13. The gas-liquid separator adopts a cyclone gas-liquid separation structure, which is suitable for the separation of mixed fluids of waste gas and sludge filtrate.

[0042] This embodiment adds a negative pressure drive and gas-liquid separation component to the end of the basic airflow circuit in embodiment one. The air pump 4 provides a stable negative pressure suction for the entire rotating airflow channel, ensuring that the exhaust gas flows into the annular space 80 through the air inlet pipe 12 and that the airflow is high-speed. The gas-liquid separator, as a post-purification and separation component, separates the gas-liquid mixture from the annular space 80. The separated filtrate is returned to the water tank 11 for collection. After the exhaust gas is de-particulate, it can be directly discharged. The suction force provided by the air pump 4 can further increase the airflow velocity in the annular space 80, enhance the water film breaking effect on the outer wall of the filter cartridge 104, and continuously maintain the high pressure difference inside and outside the filter holes, further optimizing the dehydration effect. At the same time, the high-speed negative pressure airflow can strongly carry the filtrate and fine sludge impurities precipitated on the surface of the filter cartridge 104, preventing impurities from adhering to the filter holes and causing blockage. The gas-liquid separator can separate the exhaust gas and sludge wastewater in the mixed fluid. The separated wastewater can be recycled, and the exhaust gas can be discharged after the particulate matter is removed, achieving the dual environmental protection effect of exhaust gas purification and wastewater recycling.

[0043] As one specific implementation method, refer to Figure 10 , Figure 11 In this embodiment, multiple manifolds 120 are evenly distributed around the outer periphery of the casing 8 along its own annular axis. All manifolds 120 are arranged in a ring array, and the outer ends of the multiple manifolds 120 converge and connect to the air intake pipe 12 to achieve air intake diversion. The axis of each manifold 120 does not intersect with the central axis of the filter cartridge 104. Specifically, the axis of the manifold 120 is tangent to the mid-diameter surface of the annular space 80, so that the airflow can enter the internal chamber along the tangential direction of the annular space 80. Moreover, the end of the manifold 120 away from the casing 8 is deflected at a certain angle away from the air outlet pipe 13, so that after the airflow flows into the annular space 80 through the manifold 120, the airflow can rotate around the axis of the annular space 80 and flow towards the side closer to the air outlet pipe 13, thereby forming an axial rotating airflow 9 in the annular space 80.

[0044] Furthermore, the multiple manifolds 120 split air intake can evenly distribute the airflow throughout the circumference of the annular space 80, avoiding the problems of local airflow concentration and local airflow gaps, and ensuring that the entire outer circumference of the filter cartridge 104 is covered by high-speed rotating airflow; the tangential air intake can automatically form a rotating airflow around the filter cartridge 104, generating a stable centrifugal effect. Example

[0045] In this embodiment, along the feeding and conveying direction of the sludge material inside the filter cartridge 104, the air outlet pipe 13 is set downstream of the air inlet pipe 12, so that the airflow direction inside the annular space 80 is in the same direction as the sludge material feeding direction, forming a forward airflow path.

[0046] It is understandable that, along the material conveying direction within the filter cartridge 104, the upstream filtrate is squeezed and flows out in large quantities, while the downstream sludge is continuously squeezed, reducing its moisture content and thus decreasing the filtrate outflow. In this embodiment, by having the airflow and sludge feed flow in the same direction, a larger amount of filtrate in the upstream section can flow from upstream to downstream along with the rotating airflow. The filtrate can obtain better rotational flow power with the airflow, ensuring sufficient centrifugal force. Under the action of centrifugal force, it is located on the outer layer of the rotating airflow, which can prevent the filtrate from contacting the outer wall of the downstream filter cartridge 104, reducing the risk of filtrate contamination on the side wall of the downstream filter cartridge 104. The probability of blockage; at the same time, the forward-flowing airflow can gradually carry the separated filtrate towards the outlet pipe 13, shortening the residence time of the upstream filtrate on the surface of the filter cylinder 104, which can improve the filtration effect of the upstream section filtrate and improve the discharge efficiency of the filtrate. In addition, the large amount of upstream filtrate flows a long distance with the airflow 9 in the annular space 80, so that the filtrate can be in the outer layer of the annular space 80 under the action of centrifugal force, and can be organically combined with the subsequent annular plate 3 815. This is beneficial for the subsequent entry into space 3c after being isolated by the annular plate 3 815, and improves the dehydration effect of setting the annular plate 3 815. Example

[0047] As another feasible implementation, this embodiment provides another way to form an axially rotating airflow within the annular space 80, see reference. Figure 7 , Figure 8 In this embodiment, the device is equipped with a flow guiding component 81, which includes a spiral blade 810, a first annular plate 811, and a second annular plate 814. Several spiral blades 810 are provided. In this embodiment, three spiral blades 810 are evenly spaced. All spiral blades 810 are equally spaced around the axis of the annular space 80 and are coaxially arranged inside the annular space 80 with the annular space 80 and the filter cartridge 104. The first annular plate 811 and the second annular plate 814 are respectively fixedly installed at both ends of all the spiral blades 810, forming an integral flow guiding frame structure.

[0048] The outer circumferential surfaces of annular plates 811 and 814 slide and seal against the inner circumferential surface of the housing 8, and their inner circumferential surfaces slide and seal against the outer circumferential surface of the filter cartridge 104, achieving segmented sealing and isolation of the annular space 80. Simultaneously, both annular plates 811 and 814 have channels corresponding to the number and position of the spiral blades 810, allowing airflow 9 to pass through. Specifically, the channel on annular plate 811 is channel 8110, and the channel on annular plate 814 is channel 8140. The inlet pipe 12 is correspondingly positioned on the opposite sides of annular plates 811 and 814, and the outlet pipe 13 is correspondingly positioned on the opposite side of annular plate 814 and annular plate 811.

[0049] This embodiment defines the overall assembly structure and sealing relationship of the flow guiding component 81, and achieves segmented closure of the annular space 80 through the two end ring plates. It relies on the spiral blades 810 and the corresponding channels to form a regular spiral airflow channel, thereby achieving spiral flow guidance. The flow guiding stroke of the spiral blades 810 has the effect of axially rotating the airflow.

[0050] refer to Figures 8 to 10 , Figure 13 , Figure 14 With the above configuration, after the airflow 9 enters the annular space 80, it can flow through the channel 8110 on the first ring plate 811, and then be guided by the blade surface of the spiral blade 810. The airflow 9 flows along the blade surface to the other end and then flows out through the channel 8140 on the second ring plate 814, achieving the effect of forming an axial rotating airflow. The integral guide component 81 can regulate the intake airflow into a spiral propulsion airflow, extend the flow path of the airflow in the annular space 80, and enhance the water film breaking and impurity entrainment effect. The sealed ring plate structure can avoid airflow short circuit and leakage, ensure that the airflow flows at a uniform speed along the path of the spiral blade 810, stably maintain the negative pressure and centrifugal effect in the annular space 80, and further improve the dehydration efficiency and the removal effect of exhaust gas particulate matter. Example

[0051] Based on Example 4, and referring to Figure 13 In this embodiment, the channel ports opened on the first ring plate 811 and the second ring plate 814 are precisely aligned with the blade surface of the corresponding spiral blade 810. The opening angle and size of the channel are matched with the air guiding angle and blade width of the spiral blade 810, so that the airflow 9 passing through the channel can directly conform to the blade surface of the spiral blade 810.

[0052] After the airflow 9 flows out through the channel, it can directly conform to the blade surface for guidance and propulsion, without airflow turbulence or dead corners, which greatly reduces airflow resistance and improves airflow stability and velocity. At the same time, it can specifically remove the filtrate and impurities attached to the blade surface, preventing impurities from accumulating at the blade root, continuously ensuring the guiding performance of the flow guiding component 81 and extending the service life of the equipment. Example

[0053] refer to Figure 9 , Figure 10 , Figure 12 , Figure 14 In this embodiment, cylindrical bodies are coaxially fixedly installed on opposite sides of annular plate 111 and annular plate 214. The inner circumferential surfaces of the two cylindrical bodies are slidably sealed to the outer circumferential surface of filter cylinder 104. The opposite end faces of the two cylindrical bodies are slidably sealed to the inner end faces of the two ends of the cover 8. All filter holes on the surface of filter cylinder 104 are concentrated in the annular area between the two cylindrical bodies, and there are no filter holes in the area covered by the cylindrical bodies.

[0054] Specifically, for ease of distinction, the cylinder connected to the first ring plate 811 is called cylinder 812, and the cylinder connected to the second ring plate 814 is called cylinder 813. By setting the sealing shields of cylinder 1 and cylinder 2 at both ends of the flow guiding assembly 81, the working area of ​​the filter hole of the filter cylinder 104 is precisely defined, and the rotating airflow and the dehydration working area of ​​the filter hole are sealed between the two cylinders, avoiding the problem of air leakage and liquid leakage at both ends. Example

[0055] refer to Figure 5 , Figure 6 , Figure 11 , Figure 13 In this embodiment, a drive device 20 is added to the device. The power output end of the drive device 20 is connected to the flow guide assembly 81 for transmission, which can drive the entire flow guide assembly 81 to rotate around the central axis of the filter cartridge 104. The rotation direction of the flow guide assembly 81 is limited to rotating from the back of the spiral blade 810 toward the surface of the blade.

[0056] Specifically, a support plate 17 is provided in the dehydration device 1, and a drive device 20 is provided on the support plate 17. Three drive shafts 82 are provided around the axis on the end face of the cover 8. One end of the drive shaft 82 extends into the cover 8 and is driven and connected to the cylinder 812. The other end extends out of the cover 8 and is provided with a pulley. The drive device 20 can be a drive motor. The output shaft of the drive motor is provided with a pulley. The drive motor and the three drive shafts 82 are driven and connected through the drive belt 201. Two tensioning members 202 for tensioning the drive belt 201 are provided on the support plate 17, thereby achieving the effect of driving the flow guiding component 81 to rotate.

[0057] In this embodiment, reference Figure 12 When the flow guiding component 81 is driven to rotate in the direction shown in the figure, the spiral blades 810 can continuously and uniformly scrape the outer circumferential surface of the filter cartridge 104, scraping off the attached water droplets and sludge impurities precipitated from the filter holes onto the blade surface, preventing the impurities from solidifying and clogging the filter holes; at the same time, the rotation direction from the back of the blade to the front of the blade can scrape the filtrate and impurities onto the side of the blade surface, which can work in conjunction with the airflow guiding direction, using the filtrate and impurities to flow together with the airflow to detach from the filter cartridge 104, enhancing the entrainment capacity of the rotating airflow flowing on the side of the blade surface, and quickly carrying away the scraped water droplets and impurities. Under the dual action, the probability of clogging of the filter cartridge 104 is greatly reduced, and the filtrate detachment effect and dewatering efficiency are continuously and stably improved. Example

[0058] refer to Figures 12 to 15In this embodiment, along the material feeding direction of the filter cartridge 104, annular plate 811 is designated as the upstream end and annular plate 814 as the downstream end. The opposite sides of annular plate 811 and annular plate 814, together with the inner wall of the cover 8 and the corresponding outer peripheral surface of the cartridge, form annular flow spaces. The air inlet pipe 12 is connected to the upstream flow space corresponding to annular plate 811. Annular folding plate 8121 is coaxially fixed on the cartridge connected to annular plate 811. The outer end of annular folding plate 8121 slides and seals against the inner side of the cover 8, dividing the upstream flow space into two independent and non-communicating spaces, space 1a and space 2b. Annular transmission surface 8120 is provided on the outer wall of the cartridge inside space 2b. The drive device 20 is driven and cooperates with the transmission surface 8120 through a transmission structure to realize the drive control of the flow guiding component 81.

[0059] This embodiment uses an annular folding plate 8121 to achieve partitioning and isolation of the upstream air intake space, independently dividing the air intake flow space and the drive installation space. This can prevent airflow containing particulate matter from entering space a through the air intake pipe 12, and prevent the transmission surface 8120 from being contaminated by particulate matter. This achieves partitioned operation of air intake guidance and power drive, avoiding structural interference. As a specific implementation, the transmission surface 8120 can be a friction surface, in which case the transmission shaft 82 is provided with a roller that rolls and frictionally engages with the transmission surface 8120. The transmission surface 8120 can also be an external tooth surface, in which case the transmission shaft 82 is provided with a gear that meshes with the external tooth surface. In this application, the transmission surface 8120 is preferably a friction surface.

[0060] With the above configuration, the spatial partition structure can prevent the intake airflow from directly impacting the drive transmission structure, protect the drive device 20 for stable operation, and reduce the probability of equipment failure; at the same time, the independent space 2b can form a rotating airflow in space 2 when the airflow enters through the manifold, ensuring that the airflow passes through multiple spiral blades evenly and stably, and improving the accuracy of rotating airflow shaping. Example

[0061] refer to Figure 10 , Figure 14 , Figure 15 In this embodiment, a ring-shaped ring plate 815 is coaxially arranged in the radial middle region of the second ring plate 814. Both ends of the third ring plate 815 extend to both sides of the second ring plate 814, radially dividing the second channel 8140 on the second ring plate 814 into inner and outer parts. The end of the third ring plate 815 away from the first ring plate 811 is bent outwards away from the axis to form a second folded plate 8150. The outer edge of the second folded plate 8150 slides and seals with the inner circumferential surface of the cover 8, dividing the downstream flow space corresponding to the second ring plate 814 into two independent spaces, third c and fourth d. The exhaust pipe 13 is divided into pipe first 130 and pipe second 131, where pipe first 130 connects to space third c, and pipe second 131 connects to space fourth d, achieving diversion and outlet.

[0062] In this embodiment, the combined structure of ring plate three 815 and folding plate two 8150 enables the stratified and zoned flow guidance of downstream airflow and gas-liquid mixture. Based on the distribution characteristics of the medium under centrifugal force, the diversion channel is specifically set.

[0063] With the above configuration, during the spiral flow of the airflow in the annular space 80, under the action of centrifugal force, denser water droplets and sludge impurities will gather on the outside of the annular space 80, while pure gas remains on the inside. The ring plate 3 815 can accurately achieve the stratified flow of the medium. The mixed fluid with a large amount of water and impurities on the outside enters the space 3c and is discharged through the pipe 130, while the pure airflow on the inside enters the space 4d and is discharged through the pipe 2 131, realizing the initial stratified separation of gas and liquid and impurities, greatly reducing the operating load of the subsequent gas-water separator, and improving the overall efficiency of waste gas purification and wastewater separation.

[0064] As another feasible approach, refer to Figure 1 The driving device 20 can be a pneumatic motor and also includes an air pump 4. The air inlet of the pneumatic motor is connected to the air outlet of the air pump 4. Pipe 130 is connected to a second air-water separator 5, and pipe 21 is connected to a first air-water separator 3. The other ends of the first and second air-water separators 5 are connected to the suction end of the air pump 4. When the air pump 4 is working, it provides negative pressure for the entire gas flow path, which facilitates the rapid flow of air through the annular space 80. The airflow mixed with water vapor and impurities is separated by the first and second air-water separators 5 and then discharged. The discharged positive pressure gas can drive the pneumatic motor to work and drive the entire flow guide assembly 81 to rotate. When the working power of the dehydration device 1 is high, the dehydration volume is large. At this time, the working power of the air pump 4 is increased accordingly, which increases the flow rate of the airflow. With the flow area of ​​the entire annular space 80 remaining unchanged, the airflow velocity increases. At this time, the flow rate and pressure of the gas pumped by the air pump 4 increase, which increases the speed of the pneumatic motor, thereby increasing the rotation speed of the flow guide assembly 81. This method can adapt the rotation speed of the flow guide component 81 to the airflow and dehydration amount by controlling the working power of the air pump 4 to match the working power of the dehydration device 1, thus simplifying the control logic for coordinated operation.

[0065] Furthermore, two separate gas-liquid separators, corresponding to pipe 130 and pipe 131, are installed to specifically separate airflows with different impurity contents, avoiding interference between mixed fluids of different concentrations and improving separation accuracy and processing efficiency. Simultaneously, the residual pressure of the discharged exhaust gas drives the pneumatic motor, eliminating the need for an additional power source for the drive unit 20, thus achieving energy recovery and utilization, reducing the overall energy consumption of the device, and improving its environmental and energy-saving performance.

[0066] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A device for the resource utilization of sludge from water conservancy construction, characterized in that, include: Filter cartridge (104); internally equipped with heat exchange tubes (2); The cover (8) is coaxially disposed outside the filter cartridge (104), and its two ends are sealed to the two ends of the filter cartridge (104). An annular space (80) is formed between the inner circumferential surface of the cover (8) and the outer circumferential surface of the filter cartridge (104). Along the axial direction, an air inlet pipe (12) and an air outlet pipe (13) are provided at both ends of the annular space (80). The heat exchanger (6) includes two thermally coupled pipes. The beginning and end of one pipe are connected to both ends of the heat exchange tube (2), and one end of the other pipe is connected to the exhaust pipe of the carbonization furnace (7), and the other end is connected to the inlet pipe (12). After the airflow flows into the annular space (80) through the air inlet pipe (12), it can form a rotating airflow around its axis in the annular space (80). The rotating airflow can flow from one end of the air inlet pipe (12) to one end of the air outlet pipe (13).

2. The device for resource utilization of sludge from water conservancy construction according to claim 1, characterized in that, The air outlet pipe (13) is connected to an air pump (4), and an air-water separator is provided between the air pump and the air outlet pipe (13).

3. The device for resource utilization of sludge from water conservancy construction according to claim 1, characterized in that, Multiple manifolds (120) are connected around their own axis on the outer circumferential surface of the cover (8). The other end of the manifold (120) is connected to the air intake pipe (12). The axis of the manifold (120) does not intersect with the axis of the filter cartridge (104).

4. The device for resource utilization of sludge from water conservancy construction according to claim 1, characterized in that, Along the material feeding direction inside the filter cartridge (104), the air outlet pipe (13) is located downstream of the air inlet pipe (12).

5. A resource utilization device for sludge from water conservancy construction according to any one of claims 1-4, characterized in that, It also includes a flow guiding component (81), which includes: A plurality of spiral blades (810) are provided, which are spaced apart around the axis of the annular space (80) and are coaxially arranged within the annular space (80); Ring plate one (811) and ring plate two (814) are respectively located at both ends of the spiral blade (810), and the outer and inner circumferential surfaces are respectively circumferentially sliding and sealingly fitted with the inner circumferential surface of the cover (8) and the outer circumferential surface of the filter cartridge (104). Both ring plate one (811) and ring plate two (814) are provided with channels corresponding to the spiral blade (810). The air inlet pipe (12) and the air outlet pipe (13) are respectively located on the opposite sides of ring plate one (811) and ring plate two (814).

6. A resource utilization device for sludge from water conservancy construction according to claim 5, characterized in that, The channels provided on the first ring plate (811) and the second ring plate (814) correspond to the blade surfaces of the guide vanes.

7. A resource utilization device for sludge peat from water conservancy construction according to claim 6, characterized in that, On opposite sides of the first ring plate (811) and the second ring plate (814), there are cylindrical bodies coaxially arranged. The cylindrical bodies are slidably sealed to the outer circumferential surface of the filter cylinder (104), and the opposite end faces of the two cylindrical bodies are slidably sealed to the two end faces of the cover (8). The filter holes on the filter cylinder (104) are arranged in the area between the two cylindrical bodies.

8. A resource utilization device for sludge from water conservancy construction according to claim 5, characterized in that, It also includes a drive device (20), which is driven to connect with the flow guide assembly (81) and is used to drive the flow guide assembly (81) to rotate around the axis of the filter cartridge (104). The rotation direction of the flow guide assembly (81) is from the back of the spiral blade (810) toward the surface of the blade.

9. A resource utilization device for sludge from water conservancy construction according to claim 8, characterized in that, Along the material feeding direction inside the filter cartridge (104), the first ring plate (811) is located upstream of the second ring plate (814). The opposite sides of the first ring plate (811) and the second ring plate (814) form an annular flow space between the inner side wall of the cover (8) and the corresponding outer peripheral surface of the cartridge. The air inlet pipe (12) is connected to the flow space corresponding to the first ring plate (811). The cylinder connected to the ring plate (811) is provided with an annular folding plate (8121) coaxial with the filter cylinder (104). The other end of the annular folding plate (8121) abuts against the inner side of the cover (8) to form a sliding seal fit, so that the annular folding plate (8121) divides the flow space corresponding to the ring plate (811) into two non-communicating spaces: space one (a) and space two (b). Located in the second space (b), the outer side of the cylinder is coaxially provided with a transmission surface (8120) that is driven and connected to the driving device (20).

10. A resource utilization device for sludge from water conservancy construction according to claim 9, characterized in that, Along the radial direction of the filter cartridge (104), a ring plate three (815) is coaxially arranged in the middle area of ​​the ring plate two (814). The ring plate three (815) includes two ends respectively disposed on both sides of the ring plate two (814). The ring plate three (815) divides the channel two (8140) on the ring plate two (814) into two parts. The end of the ring plate three (815) away from the ring plate one (811) is bent away from the axis to form a fold plate two (8150). The fold plate two (8150) slides and seals with the inner circumferential surface of the cover (8), thereby dividing the flow space corresponding to the ring plate two (814) into space three (c) and space four (d). The exhaust pipe (13) includes pipe one (130) and pipe two (131) which are connected to space three (c) and space four (d) respectively.

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