Sludge resource recycling and granulating device

Abstract

The present application relates to sludge resource utilization technical field, specifically disclose a kind of sludge resource recycling granulating device, including mixing conveying unit and extrusion granulating unit, extrusion granulating unit includes vertically arranged feeding cylinder, the inside of feeding cylinder is provided with second auger blade shaft, the bottom directly below feeding cylinder is provided with conical material guiding hopper, conical material guiding hopper is provided with rotating motor, the upper end of rotating motor is connected with granulating die, conical material guiding hopper is installed with the cutter that is attached with the outer circle surface of granulating die;The outer circle surface of feeding cylinder that extends into granulating die is provided with fixed ring, and the lower surface of fixed ring is provided with guide protruding portion;Sludge resource recycling granulating device disclosed in the application realizes sludge and combustion-supporting material online proportioning adjustment, stirring mixing and extrusion granulation, realizes the efficient operation of sludge resource recycling treatment, and can make the size of the biomass fuel particle prepared finally almost identical, improves the granulation uniformity and granulating effect.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sludge resource utilization, and specifically discloses a sludge resource recycling and granulating device. BACKGROUND

[0002] Sludge, as a common industrial waste, can be converted into valuable resources through specific treatment methods. Some sludge with high organic matter content can be mixed with carbon powder, coke powder and other combustion-supporting materials, extruded and granulated, and then dried to obtain an environmentally friendly solid fuel. However, in the process of preparing a solid fuel from sludge, the sludge and combustion-supporting materials need to be stirred first, and then extruded and granulated by a granulator, which requires the use of a stirring device in conjunction with the granulator. A large amount of sludge and combustion-supporting materials are mixed together and need to be stirred for a long time. In addition, the ratio of sludge to combustion-supporting materials cannot be adjusted in real time.

[0003] An invention with application number 2010101959262 discloses a vertical spiral pressure sludge granulator, which is composed of a support, a granulator device, a belt conveyor, and a scraper. The granulator device is composed of a motor, a coupling, a main thrust bearing, a pressure screw, a main working cylinder, a particle throwing head bearing, a shaft seal nut, a rotary particle throwing head, and a speed reduction rotary disc. The granulator adopts a screw pressure and a double-screw stator to increase the extrusion pressure of sludge extrusion molding, improve the strength of sludge molded particles, and increase the continuous operation efficiency and the sludge molding output. However, the vertical spiral pressure sludge granulator cannot accurately control the extrusion amount of sludge when extruding the sludge, which leads to inconsistent particle size of the cut-off sludge and affects the uniformity and effect of granulation. Therefore, the present application proposes a sludge resource recycling and granulating device to effectively solve the above technical problems. SUMMARY

[0004] The present application aims to provide a sludge resource recycling and granulating device to solve the technical problems and deficiencies in the process of preparing an environmentally friendly solid fuel from sludge and combustion-supporting materials using a sludge granulator.

[0005] The present application is achieved by the following technical solutions:

[0006] The application discloses a sludge resource recycling and granulating device, which comprises a mixing and conveying unit and an extruding and granulating unit arranged at the upper and lower ends of a rack respectively, and the discharging part of the mixing and conveying unit is connected with the extruding and granulating unit.

[0007] The upper surface of the granulating die cylinder is provided with a round opening for extending into the feeding cylinder, the outer surface of the feeding cylinder extending into the granulating die cylinder is provided with a fixing ring, the lower surface of the fixing ring is provided with a guide protruding part, the feeding cylinder below the fixing ring is provided with an extruding ring plate, the extruding ring plate is connected with the upper end of the granulating die cylinder through a guide rod and a spring, and the upper surface of the extruding ring plate is provided with an extruding guide wheel acting with the guide protruding part.

[0008] As a further arrangement of the above scheme, the mixing and conveying unit comprises an outer cylinder fixed at the upper end of the rack, the two ends of the outer cylinder are respectively provided with a sludge feeding part and a discharging part, a inner cylinder body is concentrically arranged in the outer cylinder and extends out of one end of the outer cylinder, the end of the inner cylinder body extending out of the outer cylinder is provided with a material storage hopper, the lower surface of the inner end of the inner cylinder body is provided with a discharging port, the inner cylinder body is provided with a first auger shaft, the outer end surface of the inner cylinder body is provided with a first motor connected with the first auger shaft, the outer surface of the inner cylinder body is rotatably connected with a hollow rotating cylinder extending out of the other end of the outer cylinder, the outer end of the hollow rotating cylinder is connected with a driving assembly, the hollow rotating cylinder is provided with a through port aligned with the discharging port, the hollow rotating cylinder on the two sides of the through port is respectively provided with a spiral blade and a stirring part, and the spiral blade is arranged at one end close to the sludge feeding part.

[0009] As a further arrangement of the above scheme, the end surface of the hollow rotating cylinder extending out of the outer cylinder is provided with a through hole, and a heating rod extending into the hollow rotating cylinder and fixed relative to the hollow rotating cylinder is arranged in the through hole.

[0010] As a further arrangement of the above scheme, the upper end of the outer cylinder is provided with an exhaust hole, the upper end of the outer cylinder is provided with a gas collecting box covering the exhaust hole, and the gas collecting box is sequentially connected with a filtering box and a negative pressure air suction device through an air pipe.

[0011] As a further arrangement of the above scheme, the driving assembly comprises a driving motor, a motor shaft of the driving motor and the outer end of the hollow rotating cylinder are respectively provided with a belt pulley, and a transmission belt is arranged between the two belt pulleys.

[0012] As a further arrangement of the above-mentioned scheme, the outer circumferential surface of the top end of the feeding cylinder is fixedly connected with the frame through the wing plate, and a material receiving hopper connected with the discharging part is arranged on one side of the upper end of the feeding cylinder.

[0013] As a further arrangement of the above-mentioned scheme, the guide protrusion, the extrusion guide wheel and the cutter are uniformly provided with a plurality of circumferential arrangements.

[0014] As a further arrangement of the above-mentioned scheme, the frame is composed of a plurality of support columns and a top plate, the mixing and conveying unit is arranged on the upper surface of the top plate, the extrusion and granulation unit is fixedly arranged at the lower end of the top plate, and a control box is arranged on the support column.

[0015] The sludge resource recycling and granulation device disclosed in the application realizes online proportioning, mixing and stirring, and extrusion and granulation of the sludge and the combustion-supporting material, realizes efficient operation of sludge resource recycling and treatment, and has good use effect.

[0016] Subsequently, the granulation slurry enters the feeding cylinder and is fed into the granulation die cylinder by the second auger shaft, and fills the space of the granulation die cylinder below the extrusion ring plate. Then, the granulation die cylinder is driven to rotate at a set speed by the rotating motor, and in the rotating process, on the one hand, the granulation die cylinder and the cutter act to complete the cutting of the extruded material, and on the other hand, the extrusion ring plate rotates synchronously with the granulation die cylinder, so that the extrusion guide wheel and the guide protrusion intermittently act, and the extrusion ring plate is pushed downward by a certain distance each time the two act. In this process, the space filled with the granulation slurry in the granulation die cylinder is compressed, so that the granulation slurry is uniformly extruded from the forming die holes on all sides and is cut off by the cutter. At the same time, the granulation slurry filled in the granulation die cylinder is compressed by an equal space each time, so that the size of the biomass fuel particles cut off by the cutter is almost uniform. The biomass fuel particles falling after being cut off are finally concentrated and discharged by the conical material guide hopper. Advantages

[0017] The sludge resource recycling and granulation device disclosed in the application realizes online proportioning, mixing and stirring, and extrusion and granulation of the sludge and the combustion-supporting material, realizes efficient operation of sludge resource recycling and treatment, and has good use effect.

[0018] The extrusion granulation unit in the application changes the traditional spiral blade extrusion mode, the rotation of the granulation die cylinder drives the synchronous rotation of the extrusion ring plate, then the intermittent action of the extrusion guide wheel and the guide convex part in the rotation process of the extrusion ring plate makes the granulation slurry filled in the granulation die cylinder each time be compressed by an equal volume, so that it can be uniformly extruded from the surrounding forming die holes, and finally it is cut off under the action of the cutter, so that the size of the finally prepared biomass fuel particles is almost uniform, and the granulation uniformity and granulation effect are improved.

[0019] The mixing and conveying unit in the application can on-line quantitative mixing and stirring with the combustion-supporting material during conveying the sludge, so as to ensure that the granulation slurry ratio can be adjusted in real time; in addition, the mixed material can be dried to a certain extent through the heating action of the heating rod, so as to effectively control the viscosity of the mixed material before granulation, and the hot and humid gas generated by drying can be effectively treated before being discharged; the whole mixing and conveying unit not only realizes on-line mixing and proportioning, but also can adjust the water content of the mixed material through pre-drying, so as to effectively ensure the granulation effect, and the functions are various and the use effect is excellent. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor.

[0021] Figure 1 It is a first angle three-dimensional structure schematic diagram of the application;

[0022] Figure 2 It is a second angle three-dimensional structure schematic diagram of the application;

[0023] Figure 3 It is an internal three-dimensional structure schematic diagram of the mixing and conveying unit in the application;

[0024] Figure 4 It is a three-dimensional structure schematic diagram of the spiral blade, hollow rotating cylinder, stirring part and the like in the application;

[0025] Figure 5 It is a three-dimensional structure schematic diagram of the extrusion granulation unit in the application;

[0026] Figure 6 It is an internal three-dimensional structure schematic diagram of the extrusion granulation unit in the application;

[0027] Figure 7 It is a three-dimensional structure schematic diagram of the conical material guide hopper, cutter and the like in the application. DETAILED DESCRIPTION

[0028] In order for those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work should fall within the scope of protection of the present application.

[0029] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments. Figures 1-7 The present application will be described in detail below with reference to the drawings and in combination with the embodiments. Embodiment 1

[0030] Embodiment 1 discloses a sludge resource recycling and granulating device, referring to the drawings Figure 1 and the drawings Figure 2 , the main body includes a rack 1, a control box 2, a mixing and conveying unit 3 and an extrusion and granulating unit 4. Among them, the rack 1 is composed of a plurality of supporting columns 101 and a top plate 102, the control box 2 is installed at the side end of the supporting column 101, the mixing and conveying unit 3 is arranged on the upper surface of the top plate 102, and the extrusion and granulating unit 4 is arranged below the top plate 102 and connected with the discharge end of the mixing and conveying unit 3.

[0031] Referring to the drawings Figure 3 and the drawings Figure 4 , the mixing and conveying unit 3 includes an outer cylinder 301 fixed horizontally on the upper surface of the top plate 102, a sludge feeding part 302 is arranged on the upper surface of one end of the outer cylinder 301, and a discharge part 303 is arranged on the lower surface of the other end of the outer cylinder 301. An inner cylinder 304 is arranged concentrically inside the outer cylinder 301, and one end of the inner cylinder 304 extends out of the outer cylinder 301 near the sludge feeding part 302, and then a material storage hopper 305 is arranged on the upper end of the inner cylinder 304 extending out of the outer cylinder 301. A first auger shaft 306 is arranged rotatably inside the inner cylinder 304, a first motor 307 for driving the first auger shaft 306 is arranged on the outer end surface of the inner cylinder 304, and finally a discharge port 3041 is arranged on the lower end of the end of the inner cylinder 304 located inside the outer cylinder 301.

[0032] A hollow rotating cylinder 308 is arranged on the outer surface of the inner cylinder 304, one end of the hollow rotating cylinder 308 extends out of the end face of the outer cylinder 301 from the side away from the sludge adding part 302, and a driving assembly 309 connected to the outer end of the hollow rotating cylinder 308 is arranged on the top plate 102, the hollow rotating cylinder 308 can be actively controlled to rotate at a certain speed on the outer surface of the hollow rotating cylinder 308 through the driving assembly 309, and the specific driving assembly 309 can adopt the form of a driving motor, a belt pulley and a transmission belt. Finally, a through hole 3081 is formed on the outer surface of the hollow rotating cylinder 308, which is in the same axial position as the discharge port 3041 on the inner cylinder 304, so that when the through hole 3081 is rotated to be circumferentially aligned with the discharge port 3041, the ingredients sent into the inner cylinder 304 can fall into the outer cylinder 301 through the discharge port 3041 and the through hole 3081.

[0033] In addition, the discharge port 3041 and the through hole 3081 are separation points, the outer surface of the hollow rotating cylinder 308 on the side close to the sludge adding part 302 is provided with a spiral blade 310, and the outer surface of the hollow rotating cylinder 308 on the side away from the sludge adding part 302 is provided with a plurality of stirring parts 311. The specific stirring part 311 can be a stirring rod, a stirring blade or a stirring tooth, and is uniformly distributed along the axial direction of the hollow rotating cylinder 308.

[0034] Referring to the accompanying drawings Figure 2 , the accompanying drawings Figure 5 , the accompanying drawings Figure 6 and the accompanying drawings Figure 7 , the extrusion granulation unit 4 includes a vertically arranged feeding cylinder 401, the top end outer surface of the feeding cylinder 401 is fixedly connected with the top plate 102 through a wing plate 402, and then a receiving hopper 403 connected with the discharging part 303 is arranged on one side of the upper end of the feeding cylinder 401. A second auger shaft 404 is arranged in the feeding cylinder 401, and a second motor 405 for driving the second auger shaft 405 is arranged on the top surface of the feeding cylinder 401.

[0035] A conical guide hopper 406 fixedly connected with the rack 1 is arranged directly below the feeding cylinder 401, a support 407 is arranged at the lower end of the conical guide hopper 406, a rotary motor 408 is installed on the support 407, and a granulation die cylinder 409 is fixedly connected to the upper end of the motor shaft of the rotary motor 408. A plurality of forming die holes 4091 are uniformly formed on the outer surface of the granulation die cylinder 409, and a plurality of cutters 410 are fixedly installed in the conical guide hopper 406, and the cutting edges of the cutters 410 are in close contact with the outer surface of the granulation die cylinder 409.

[0036] Furthermore, a circular opening is formed on the upper surface of the granulation die cylinder 409 for extending into the lower end of the feeding cylinder 401, and a fixing ring 411 is welded on the outer cylindrical surface of the feeding cylinder 401 extending into the granulation die cylinder 409, and a plurality of guiding protrusions 412 are uniformly arranged on the lower surface of the fixing ring 411. An extrusion ring plate 413 is arranged inside the granulation die cylinder 409 below the fixing ring 411, and the outer diameter of the extrusion ring plate 413 is equal to the inner diameter of the granulation die cylinder 409. An extrusion guide wheel 414 corresponding to each guiding protrusion 412 is arranged on the extrusion ring plate 413, and the annular surface formed by the extrusion guide wheels 414 coincides with the annular surface formed by the guiding protrusions 412. A plurality of guiding rods 415 are arranged on the upper surface of the extrusion ring plate 413 outside the extrusion guide wheels 414 and extend through the upper surface of the granulation die cylinder 409, and a plurality of springs 416 are arranged between the top wall of the granulation die cylinder 409 and the extrusion ring plate 413.

[0037] When the sludge resource recycling and granulation device disclosed in Embodiment 1 is used to granulate sludge with high organic matter content, carbon powder is first loaded into the ingredient storage hopper 305, and then the rotation speed of the first motor 307 and the driving motor is designed according to the proportioning. During operation, the sludge is first fed into the sludge feeding part 302 through the slurry pump and the pipeline, and then the sludge is gradually transported to the other end under the action of the helical blade 310, while the carbon powder is sent to the position of the discharge port 3041 by the first auger shaft 306. When the through port 3081 is rotated to be circumferentially aligned with the discharge port 3041, the internal carbon powder will be quantitatively dropped into the outer cylinder 301 and mixed with the sludge. Subsequently, the sludge and the carbon powder are fully stirred by the stirring part 311 during the continuous transportation process, so that the sludge and the carbon powder are fully mixed according to the proportioning.

[0038] The mixed material is sent into the feeding cylinder 401 by the discharge part 303, and then the feeding speed is controlled by the second auger shaft 405 to send the material into the granulation die cylinder 409 below the extrusion ring plate 413. At the same time, the granulation die cylinder 409 is driven to rotate at a set speed in the conical guide hopper 406 by the rotating motor 408. The rotation of the granulation die cylinder 409 synchronously drives the rotation of the extrusion ring plate 413, so that the relative rotation between the extrusion ring plate 413 and the fixing ring 411 occurs. When the extrusion guide wheel 414 contacts the guiding protrusion 412 each time, the extrusion ring plate 413 moves downward against the pulling force of the spring 416, so that the material originally in the granulation die cylinder 409 is extruded, and the material moves uniformly to the four directions, thereby forming columnar material through the forming die hole 4091. At the same time, the columnar material after forming is cut off by the cutter 410, so that equal-length combustion granular materials are prepared. Finally, the combustion granular materials fall from the lower end of the conical guide hopper 406 and can be used as fuel after drying. Embodiment 2

[0039] Embodiment 2 discloses a sludge resource recycling and granulation device which is further optimized based on the technical solution in Embodiment 1. The same as Embodiment 1, no further description is given.

[0040] Reference is made to the accompanying drawings Figure 1 and the accompanying drawings Figure 3 In this embodiment 2, a through hole is formed at the center of the end face of the hollow rotating drum 308 extending out of the outer cylinder 301, and a heating rod 5 extending into the hollow rotating drum 308 is arranged along the through hole. The outer end of the heating rod 5 is fixedly connected to the upper end of the frame 1, and the effective heating area of the heating rod 5 corresponds to the hollow rotating drum 308 in the stirring section 311.

[0041] In addition, a row of exhaust holes are formed in the upper end of the outer cylinder 301 corresponding to the area of the heating rod 5, and a gas collecting box 6 is arranged above the exhaust holes. A negative pressure air extraction device 7 and a filter box 8 are arranged on the top plate 102, and a first gas pipe 9 is connected between the negative pressure air extraction device 7 and the filter box 8. A second gas pipe 10 is further arranged between the other end of the filter box 8 and the gas collecting box 6. The filter core in the filter box 8 is composed of at least a drying layer and an activated carbon adsorption layer, so that the moisture generated by drying the mixed material can be first filtered and dried by the filter core in the filter box 8, and then the odor is removed before being discharged.

[0042] When the water content of the sludge is high, the mixed material prepared by the sludge and the carbon powder cannot reach the viscosity required for granulation. In this embodiment 2, the heating rod 5 is heated by passing current through it, and the surface of the hollow rotating drum 308 is heated, so that the sludge and the carbon powder are heated and dried during stirring. The hot and humid gas generated is sucked into the filter box 8 under negative pressure, and then filtered by the filter core in the filter box 8 before being discharged, so that the viscosity of the mixed material before granulation can be effectively controlled, and the subsequent granulation effect is guaranteed.

[0043] The above is only a preferred embodiment of the present application, and is not intended to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A sludge resource recycling granulation device, comprising a mixing and conveying unit and an extrusion granulation unit respectively arranged at the upper and lower ends of a frame, and the discharge part of the mixing and conveying unit is connected with the extrusion granulation unit, characterized in that, The extrusion granulation unit comprises a vertically arranged feeding cylinder, the inside of the feeding cylinder is provided with a second auger shaft, the upper end of the feeding cylinder is provided with a second motor connected with the second auger shaft, a conical material guide hopper is fixedly arranged directly below the feeding cylinder, a rotating motor is arranged in the conical material guide hopper, the upper end of the rotating motor is connected with a granulation die cylinder, a plurality of forming die holes are formed on the outer circumferential surface of the granulation die cylinder, and a cutter is fixedly arranged on the outer circumferential surface of the granulation die cylinder. The mixing and conveying unit comprises an outer cylinder fixed to the upper end of the frame, sludge feeding portions and discharge portions are arranged at the two ends of the outer cylinder respectively, an inner cylinder body is arranged in the outer cylinder in a concentric manner, one end of the inner cylinder body extends out of the outer cylinder, a material storage hopper is arranged at the end of the inner cylinder body extending out of the outer cylinder, a discharge port is formed in the lower surface of the inner end of the inner cylinder body, a first auger shaft is arranged in the inner cylinder body, a first motor is arranged on the outer end surface of the inner cylinder body and connected with the first auger shaft, a hollow rotating cylinder extending out of the other end of the outer cylinder is rotatably connected to the outer surface of the inner cylinder body, a driving assembly is connected to the outer end portion of the hollow rotating cylinder, a through hole is formed in the hollow rotating cylinder and aligned with the discharge port, helical blades and stirring portions are arranged on the hollow rotating cylinder on the two sides of the through hole respectively, and the helical blades are arranged at one end close to the sludge feeding portion.

2. The sludge resource recycling granulation device according to claim 1, characterized in that, A through hole is formed in the end surface of the hollow rotating cylinder extending out of the outer cylinder, and a heating rod extending into the hollow rotating cylinder and fixed relative to the hollow rotating cylinder is arranged in the through hole.

3. The sludge resource recycling granulation device according to claim 2, characterized in that, An exhaust hole is formed in the upper end of the outer cylinder, a gas collecting box covering the exhaust hole is arranged at the upper end of the outer cylinder, and a filter box and a negative pressure air suction device are sequentially connected to the gas collecting box through a gas pipe.

4. The sludge resource recycling granulation device according to claim 1, characterized in that, The driving assembly comprises a driving motor, a motor shaft of the driving motor and an outer end portion of the hollow rotating cylinder are both provided with belt pulleys, and a transmission belt is arranged between the two belt pulleys.

5. The sludge resource recycling granulation device according to claim 1, characterized in that, The outer circumferential surface of the top end of the feeding cylinder is fixedly connected to the frame through a wing plate, and a material receiving hopper connected with the discharge portion is arranged at one side of the upper end of the feeding cylinder.

6. The sludge resource recycling granulation device according to claim 1, characterized in that, The guide protrusion, the extrusion guide wheel and the cutter are uniformly provided with a plurality of circumferential arrangements.

7. The sludge resource recycling granulation device according to claim 1, characterized in that, The frame is composed of a plurality of support columns and a top plate, the mixing and conveying unit is arranged on the upper surface of the top plate, the extrusion granulation unit is fixedly arranged at the lower end of the top plate, and a control box is arranged on the support column.

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