A sludge treatment and dewatering device

Abstract

The present invention belongs to the field of sludge treatment, and specifically is a sludge treatment dewatering device, comprising a dewatering tank, a rotatable central tube is arranged on the inner side of the dewatering tank, a spiral blade is fixedly connected to the outer side of the central tube, a throw-out tank for receiving squeezed sludge is arranged at one end of the dewatering tank, a collecting hood for receiving water is arranged at the other end of the dewatering tank, the inner side of the central tube is hollow, and an input pipe for injecting sludge is arranged in the middle of the inner side of the central tube. In this arrangement, since the dewatering tank body is an integrated arrangement, the squeezed liquid does not need to flow out from the gap, so there is no need to strictly control the rotation speed of the central tube, so that the rotation speed of the central tube can be set faster than the traditional rotation speed, so that the squeezed sludge solids can be squeezed and transferred faster, effectively improving the sludge squeezing and dewatering work.

Description

Technical Field

[0001] The invention belongs to the field of sludge treatment, in particular to a sludge treatment dehydration device. Background Art

[0002] Sludge is a byproduct of sewage treatment, containing a large amount of organic matter, pathogens, heavy metals and persistent organic pollutants. If it is not properly treated, direct discharge will cause serious pollution to the environment. Sludge treatment is a process of reducing, stabilizing and harmless sludge by concentrating, conditioning, dehydrating, stabilizing, drying or incinerating it. Dehydrating sludge can greatly reduce the volume and quality of sludge, making it easier for subsequent treatment.

[0003] A patent application with publication number CN104619654A discloses a sludge dewatering method and a dewatering device. In the sludge dewatering method in which sludge concentrated by a sludge thickener is dewatered by a screw press, the screw press does not have spiral blades on the periphery of a rotating shaft constituting the screw shaft at a specified axial length in the middle portion of the screw shaft, and the concentrated sludge is directly heated by heated water vapor or hot air on the sludge inlet side constituting the conveying passage of the screw press, and is dehydrated in the screw press in a heated state.

[0004] The traditional spiral extrusion sludge dewatering device needs to install a filter plate with a gap on the outside of the spiral extrusion part to allow the squeezed sludge water to leak out from the gap of the filter plate. Although this method is simple to operate and has a good dewatering effect, the processing speed is slow and the sludge can only be squeezed slowly.

[0005] To this end, the present invention provides a sludge treatment and dehydration device. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve its technical problem is: a sludge treatment and dewatering device described in the present invention comprises a dewatering tank, a rotatable central tube is arranged on the inner side of the dewatering tank, a spiral blade is fixedly connected to the outer side of the central tube, a throwing tank for receiving squeezed sludge is arranged at one end of the dewatering tank, a collecting cover for receiving water is arranged at the other end of the dewatering tank, the inner side of the central tube is hollow, an input pipe for injecting sludge is arranged at the middle part of the inner side of the central tube, a plurality of throwing outlets are opened on the surface of the central tube, and a plurality of extrusion outlets are opened on the surface of the spiral blade close to the central tube;

[0008] By setting up the dewatering tank, the sludge to be dehydrated is injected into the interior of the central tube through the input pipe. The rotating central tube causes the injected sludge to be centrifugally thrown outward and enters between the central tube and the dewatering tank through the throwing port. Under the centrifugal action, the solid part in the sludge will be separated from the liquid. The solid part fits the edge of the dewatering tank and moves continuously toward the throwing tank with the spiral conveying of the spiral blade, while the liquid part is close to the outside of the central tube and moves in the opposite direction through the extrusion port. Finally, the separated solid part will be squeezed from the end of the dewatering tank into the throwing tank, and the liquid part will be transferred to the collecting hood to complete the dewatering of the sludge. In this setting, since the dewatering tank body is an integrated setting, the squeezed liquid does not need to flow out from the gap, so there is no need to strictly control the rotation speed of the central tube, so that the rotation speed of the central tube can be set faster than the traditional rotation speed, so that the squeezed sludge solids will be squeezed and transferred faster, effectively improving the sludge extrusion and dewatering work.

[0009] Preferably, the dewatering tank is arranged at an angle, the height of the ejection tank is higher than the height of the collecting hood, the diameter of the central tube near the ejection tank is smaller than the diameter of the central tube near the collecting hood, and the inclined dewatering tank allows the liquid near the central tube to be transferred downward from the extrusion port more easily, effectively transferring with the help of gravity, and the closer to the ejection tank, the smaller the space between the central tube and the dewatering tank, and with the transfer of the spiral blades, the closer to the ejection tank, the more solid sludge is concentrated, basically filling the space between the central tube and the dewatering tank, and then because the space is reduced, the sludge can be further squeezed to squeeze the liquid inside, and the liquid is discharged to the rear end through the extrusion port and finally recovered by the collecting hood. Through this arrangement, the water content of the sludge after dewatering is ensured to be low.

[0010] Preferably, the input pipe passes through the middle of one end of the dewatering tank close to the ejection tank, and the end of the input pipe away from the dewatering tank is fixedly connected to a mixing box. The sludge generally needs to be mixed with a flocculant before dewatering. The mixing box is provided with a stirring part, which can be used to mix the sludge and flocculant. The mixed sludge is then discharged into the interior of the central tube through the input pipe.

[0011] Preferably, a plurality of notched grooves are provided on the outer side of the spiral blade near the edge, and the plurality of notched grooves are arranged equidistantly in a spiral shape. A steel cable is provided inside the spiral blade, and the steel cable passes through the notched groove. The outer edge of the spiral blade is in contact with the inner wall of the dewatering tank. In traditional spiral extrusion, the edge of the spiral blade is subjected to a large extrusion force and is easily damaged after long-term use. By providing the notched grooves, when the spiral blade is extruding sludge solids, the sludge solids will move backward along the notched grooves. However, the sludge itself has adhesion, and the steel cable is firmly provided in the notched grooves, so that the sludge is more easily fixed in the notched grooves. When the sludge is fixed in the notched grooves, the carrier for squeezing the sludge becomes the sludge itself. Through this arrangement, the pressure borne by the spiral blade will be greatly reduced, thereby reducing damage to the spiral blade and improving the service life of the spiral blade.

[0012] Preferably, a transmission roller is fixedly connected to one end of the center tube close to the collecting cover, and the transmission roller extends to the outside of the dewatering tank. A driving motor is provided on the outside of the center tube for driving the transmission roller and the dewatering tank to rotate. The driving motor drives the transmission roller and the dewatering tank to rotate at the same time, and the transmission roller drives the center tube to rotate to complete the sludge dewatering work. At the same time, the dewatering tank also rotates, but there is a speed difference with the center tube. Since the dewatering tank itself rotates, the problem of sludge sticking to the inner wall of the dewatering tank can be reduced, thereby assisting the transfer work of the spiral blades.

[0013] Preferably, a protection box is provided on the outside of the dewatering tank, the driving motor is fixedly connected in the protection box, an output roller is fixedly connected to the output end of the driving motor, a driving gear is fixedly connected to the outside of the output roller, a gear plate is fixedly connected to the end of the dewatering tank close to the driving motor, the gear plate is meshed with the driving gear, a belt is sleeved between the outside of the output roller and the outside of the transmission roller, the belt, output roller and transmission roller are all sleeved inside the protection box, the output roller and the driving gear are driven to rotate by the driving motor, and then the gear plate and the dewatering tank are driven to rotate, and at the same time, the output roller drives the transmission roller and the center tube to rotate through the belt, and since the diameter of the gear plate is much larger than the diameter of the driving gear, the speed of the transmission roller is much larger than the speed of the dewatering tank, thereby ensuring the normal operation of the sludge dewatering work, and the differential rotation of the two components is completed by using one power source, reducing the difficulty of operation.

[0014] Preferably, a plurality of discharge pipes are fixedly connected to one end of the dewatering tank close to the throwing-out tank, a plurality of metal rods for lateral interception are fixedly connected to the inside of the discharge pipes, the end of the dewatering tank is rotatably connected to the throwing-out tank, and a recovery box is fixedly connected to the bottom of the throwing-out tank. In the later stage of extrusion, as the sludge is squeezed to the top, it will eventually be squeezed into the discharge pipe. The metal rods in the discharge pipe will block and eventually squeeze the sludge, so that the sludge finally thrown out to the throwing-out tank can be fully dehydrated and finally collected by the recovery box.

[0015] Preferably, the collecting hood is fixedly connected to the protection box, and the collecting hood is slidably engaged with the gear plate. A water outlet for drainage is provided on the surface of the gear plate, and the water outlet is located in the middle of the gear plate, so that sludge close to the edge is difficult to be discharged from the water outlet. The collecting hood can collect sewage discharged from multiple water outlets and discharge it from the bottom.

[0016] Preferably, two winding rollers are provided at the end of the output roller, and the steel cable passes through the notch grooves on both sides. Both ends of the steel cable are located at the ends of the output roller, and the two ends of the steel cable are respectively fixed to the two winding rollers. A reduction motor for driving the winding roller to rotate is provided on the outer side of the winding roller. Through the two winding rollers, one is used to wind up the steel cable, and the other is used to release the steel cable. In this way, after long-term use, the steel cable on the outer side of the spiral blade can be replaced to reduce the problem of steel cable breakage due to long-term use.

[0017] Preferably, a linkage gear is fixedly connected to one end of the winding roller, and the two linkage gears are meshed with each other. A support frame is installed on the outer side of the linkage gear. The reduction motor is fixedly connected to one of the winding rollers, and a support frame is also installed between the outer side of the reduction motor and the winding roller. The reduction motor is used to drive one of the winding rollers to rotate. Since the two linkage gears are meshed with each other, the two winding rollers rotate in the same direction, completing the effect of one releasing the steel cable and the other winding the steel cable, thereby realizing the effect of replacing the outer steel cable of the spiral blade.

[0018] The beneficial effects of the present invention are as follows:

[0019] 1. A sludge treatment and dewatering device according to the present invention, through the setting of a dewatering tank, the sludge to be dehydrated is injected into the interior of the central tube through the input pipe, and the rotating central tube causes the injected sludge to be centrifugally thrown outward and enters between the central tube and the dewatering tank through the throwing port. Under the centrifugal action, the solid part in the sludge will be separated from the liquid, and the solid part will fit with the edge of the dewatering tank and continuously move toward the throwing tank with the spiral conveying of the spiral blade, while the liquid part is close to the outside of the central tube and will move in the opposite direction through the extrusion port. Finally, the separated solid part will be squeezed from the end of the dewatering tank into the throwing tank, and the liquid part will be transferred to the collecting hood to complete the dewatering treatment of the sludge. In this setting, since the dewatering tank body is an integrated setting, the squeezed liquid does not need to flow out from the gap, so there is no need to strictly control the rotation speed of the central tube, so that the rotation speed of the central tube can be set faster than the traditional rotation speed, so that the squeezed sludge solids will be squeezed and transferred faster, effectively improving the sludge extrusion and dewatering work.

[0020] 2. The sludge treatment and dewatering device described in the present invention has an inclined dewatering tank, which allows the liquid close to the central tube to be transferred downward from the extrusion port more easily, and the transfer is effectively carried out with the help of gravity. The closer to the ejection tank, the smaller the space between the central tube and the dewatering tank. As the spiral blades are transferred, the closer to the ejection tank, the more solid sludge is concentrated, basically filling the space between the central tube and the dewatering tank. After that, as the space is reduced, the sludge can be further squeezed to squeeze the liquid inside. The liquid is discharged to the rear end through the extrusion port and is finally recovered by the collecting hood. Through this arrangement, the water content of the sludge after dewatering is ensured to be low. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below in conjunction with the accompanying drawings.

[0022] Figure 1 is a stereogram of the present invention;

[0023] Figure 2 is a cross-sectional view of the present invention;

[0024] Figure 3 is a cross-sectional view of a dehydration tank of the present invention;

[0025] Figure 4 is a stereoscopic diagram of the central tube and spiral blades of the present invention;

[0026] Figure 5 is a three-dimensional diagram of the gear plate of the present invention;

[0027] Figure 6 is a three-dimensional diagram of the output roller of the present invention;

[0028] Figure 7 It is a three-dimensional diagram of the throw-out tank of the present invention;

[0029] In the figure: 1. dewatering tank; 2. throwing tank; 3. protection box; 5. recovery box; 6. mixing box; 7. center tube; 8. spiral blade; 9. throwing outlet; 10. discharge pipe; 11. input pipe; 12. gear plate; 13. notch groove; 14. steel cable; 15. water outlet; 16. collecting cover; 17. transmission roller; 18. belt; 19. output roller; 20. driving gear; 21. driving motor; 22. linkage gear; 23. winding roller; 24. reduction motor; 25. extrusion port. DETAILED DESCRIPTION

[0030] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0031] like Figures 1 to 6As shown, a sludge treatment and dehydration device according to an embodiment of the present invention comprises a dehydration tank 1, a rotatable central tube 7 is arranged on the inner side of the dehydration tank 1, a spiral blade 8 is fixedly connected to the outer side of the central tube 7, a discharge tank 2 for receiving squeezed sludge is arranged at one end of the dehydration tank 1, a collection cover 16 for receiving water is arranged at the other end of the dehydration tank 1, the inner side of the central tube 7 is hollow, an input pipe 11 for injecting sludge is arranged at the middle part of the inner side of the central tube 7, a plurality of discharge ports 9 are opened on the surface of the central tube 7, and a plurality of extrusion ports 25 are opened on the surface of the spiral blade 8 close to the central tube 7;

[0032] When working, the traditional spiral extrusion sludge dewatering device needs to install a filter sheet with a gap on the outside of the spiral extrusion part to allow the squeezed sludge water to leak out from the gap of the filter sheet. Although this method is simple to operate and has a good dewatering effect, the processing speed is slow and the sludge can only be squeezed slowly.

[0033] By setting the dewatering tank 1, the sludge to be dehydrated is injected into the interior of the central tube 7 through the input pipe 11. The rotating central tube 7 causes the injected sludge to be centrifugally thrown outward and enters between the central tube 7 and the dewatering tank 1 through the throwing port 9. Under the centrifugal action, the solid part in the sludge will be separated from the liquid. The solid part fits the edge of the dewatering tank 1 and moves continuously toward the throwing tank 2 with the spiral conveying of the spiral blade 8, while the liquid part is close to the outside of the central tube 7 and moves in the opposite direction through the extrusion port 25. Finally, the separated solid part will be squeezed from the end of the dewatering tank 1 into the throwing tank 2, and the liquid part will be transferred to the collecting cover 16 to complete the dewatering of the sludge. In this setting, since the dewatering tank 1 body is an integrated setting, the squeezed liquid does not need to flow out from the gap, so there is no need to strictly control the rotation speed of the central tube 7, so that the rotation speed of the central tube 7 can be set faster than the traditional rotation speed, so that the squeezed sludge solids will be squeezed and transferred faster, effectively improving the sludge extrusion dewatering work.

[0034] like Figures 1 to 6 As shown, the dehydration tank 1 is inclined, the height of the ejection tank 2 is higher than the height of the collecting cover 16, and the diameter of the central tube 7 near the ejection tank 2 is smaller than the diameter of the central tube 7 near the collecting cover 16;

[0035] During operation, the inclined dewatering tank 1 allows the liquid near the central tube 7 to be transferred downward from the extrusion port 25 more easily, and the transfer is effectively carried out with the help of gravity. The closer to the ejection tank 2, the smaller the space between the central tube 7 and the dewatering tank 1. As the spiral blades 8 are transferred, the closer to the ejection tank 2, the more solid sludge is concentrated, basically filling the space between the central tube 7 and the dewatering tank 1. After that, as the space is reduced, the sludge can be further squeezed to squeeze the liquid inside. The liquid is discharged to the rear end through the extrusion port 25 and is finally recovered by the collecting hood 16. Through this arrangement, the water content of the sludge after dehydration is ensured to be low.

[0036] like Figures 1 to 6 As shown, the input pipe 11 passes through the middle of one end of the dehydration tank 1 close to the throwing tank 2, and the end of the input pipe 11 away from the dehydration tank 1 is fixedly connected to the mixing box 6;

[0037] During operation, the sludge generally needs to be mixed with a flocculant before dehydration. The mixing box 6 is provided with a stirring component, which can be used to mix the sludge and the flocculant. The mixed sludge is then discharged into the center tube 7 through the input pipe 11.

[0038] like Figures 1 to 7 As shown, a plurality of notched grooves 13 are provided on the outer side of the spiral blade 8 near the edge, and the plurality of notched grooves 13 are arranged in a spiral and equidistant manner. A steel cable 14 is provided inside the spiral blade 8, and the steel cable 14 passes through the notched grooves 13, and the outer edge of the spiral blade 8 is in contact with the inner wall of the dehydration tank 1;

[0039] During operation, in conventional spiral extrusion, the edge of the spiral blade 8 is subjected to greater extrusion force, and is easily damaged after long-term use. By providing the notch groove 13, the spiral blade 8 will move backward along the notch groove 13 during the process of extruding sludge solids. However, the sludge itself has adhesion, and a steel cable 14 is arranged in the notch groove 13 to make it easier for the sludge to be fixed in the notch groove 13. When the sludge is fixed in the notch groove 13, the carrier for squeezing the sludge becomes the sludge itself. Through this arrangement, the pressure borne by the spiral blade 8 will be greatly reduced, thereby reducing damage to the spiral blade 8 and increasing the service life of the spiral blade 8.

[0040] like Figures 1 to 7 As shown, a transmission roller 17 is fixedly connected to one end of the central tube 7 close to the collecting cover 16, and the transmission roller 17 penetrates the outside of the dehydration tank 1. A driving motor 21 for driving the transmission roller 17 and the dehydration tank 1 to rotate is arranged on the outside of the central tube 7;

[0041] During operation, the driving motor 21 drives the transmission roller 17 and the dewatering tank 1 to rotate at the same time, and the transmission roller 17 drives the central tube 7 to rotate to complete the sludge dewatering work. At the same time, the dewatering tank 1 also rotates, but there is a speed difference with the central tube 7. Since the dewatering tank 1 rotates itself, the problem of sludge sticking to the inner wall of the dewatering tank 1 can be reduced, and the transfer work of the spiral blade 8 can be assisted.

[0042] like Figures 1 to 7 As shown, a protection box 3 is provided on the outside of the dehydration tank 1, the driving motor 21 is fixedly connected in the protection box 3, an output roller 19 is fixedly connected to the output end of the driving motor 21, a driving gear 20 is fixedly connected to the outside of the output roller 19, a gear plate 12 is fixedly connected to one end of the dehydration tank 1 close to the driving motor 21, the gear plate 12 is meshed with the driving gear 20, a belt 18 is sleeved between the outside of the output roller 19 and the outside of the transmission roller 17, and the belt 18, the output roller 19 and the transmission roller 17 are all sleeved inside the protection box 3;

[0043] During operation, the output roller 19 and the driving gear 20 are driven to rotate by the driving motor 21, thereby driving the gear plate 12 and the dewatering tank 1 to rotate. At the same time, the output roller 19 drives the transmission roller 17 and the central tube 7 to rotate through the belt 18. Since the diameter of the gear plate 12 is much larger than the diameter of the driving gear 20, the speed of the transmission roller 17 is much larger than the speed of the dewatering tank 1, thereby ensuring the normal operation of the sludge dewatering work, and the differential rotation of the two components is completed using one power source, reducing the difficulty of operation.

[0044] like Figures 1 to 7 As shown, a plurality of discharge pipes 10 are fixedly connected to one end of the dehydration tank 1 close to the throwing tank 2, a plurality of metal rods for lateral interception are fixedly connected to the inside of the discharge pipe 10, the end of the dehydration tank 1 is rotatably connected to the throwing tank 2, and a recovery box 5 is fixedly connected to the bottom of the throwing tank 2;

[0045] During operation, in the later stage of squeezing, as the sludge is squeezed to the top, it will eventually be squeezed into the discharge pipe 10. The metal rod in the discharge pipe 10 will block and eventually squeeze the sludge, so that the sludge finally thrown out to the throwing tank 2 can be fully dehydrated and finally collected by the recovery box 5.

[0046] like Figures 1 to 7 As shown, the collecting cover 16 is fixedly connected to the protection box 3, and the collecting cover 16 is slidably engaged with the gear plate 12, and a water outlet 15 for drainage is provided on the surface of the gear plate 12;

[0047] During operation, the water outlet 15 is opened in the middle of the gear plate 12, so that the sludge near the edge is difficult to be discharged from the water outlet 15, and the collecting cover 16 can collect the sewage discharged from multiple water outlets 15 and discharge it from the bottom.

[0048] like Figures 1 to 7 As shown, two winding rollers 23 are provided at the end of the output roller 19, and the two sides of the steel cable 14 pass through the notch groove 13. Both ends of the steel cable 14 are located at the end of the output roller 19, and the two ends of the steel cable 14 are respectively fixed to the two winding rollers 23. The outer side of the winding roller 23 is provided with a reduction motor 24 for driving the winding roller 23 to rotate;

[0049] During operation, two winding rollers 23 are used, one for winding up the steel cable 14 and the other for releasing the steel cable 14. Thus, after long-term use, the steel cable 14 on the outer side of the spiral blade 8 can be replaced, thereby reducing the problem of the steel cable 14 breaking due to long-term use.

[0050] like Figures 1 to 7 As shown, one end of the winding roller 23 is fixedly connected to a linkage gear 22, the two linkage gears 22 are meshed with each other, a support frame is installed on the outer side of the linkage gear 22, the reduction motor 24 is fixedly connected to one of the winding rollers 23, and a support frame is also installed between the outer side of the reduction motor 24 and the winding roller 23;

[0051] During operation, a reduction motor 24 is used to drive one of the winding rollers 23 to rotate. Since the two linkage gears 22 are meshed with each other, the two winding rollers 23 rotate in the same direction, completing the effect of releasing one steel cable 14 and winding the other steel cable 14, thereby achieving the effect of replacing the outer steel cable 14 of the spiral blade 8.

[0052] During operation, through the setting of the dewatering tank 1, the sludge to be dehydrated is injected into the interior of the central tube 7 through the input pipe 11, and the rotating central tube 7 causes the injected sludge to be centrifugally thrown outward and enter between the central tube 7 and the dewatering tank 1 through the throwing port 9. Under the centrifugal action, the solid part of the sludge will be separated from the liquid, and the solid part will fit with the edge of the dewatering tank 1 and continuously move toward the throwing tank 2 with the spiral conveying of the spiral blade 8, while the liquid part is close to the outer side of the central tube 7 and will move in the opposite direction through the extrusion port 25. Finally, the separated solid part will be squeezed from the end of the dewatering tank 1 into the throwing tank 2, and the liquid part will be transferred to the collecting cover 16 to complete the dewatering of the sludge. In this setting, since the dewatering tank 1 body is an integrated setting, the squeezed liquid does not need to flow out from the gap, so there is no need to strictly control the rotation speed of the central tube 7, so that the rotation speed of the central tube 7 can be set faster than the traditional rotation speed, so that the squeezed sludge solids will be squeezed and transferred faster, effectively improving the sludge extrusion and dewatering work;

[0053] The inclined dewatering tank 1 allows the liquid near the central tube 7 to be transferred downward from the extrusion port 25 more easily, and the transfer is effectively carried out with the help of gravity. The closer to the ejection tank 2, the smaller the space between the central tube 7 and the dewatering tank 1. As the spiral blades 8 are transferred, the more solid sludge is concentrated near the ejection tank 2, and the space between the central tube 7 and the dewatering tank 1 is basically filled. After that, as the space is reduced, the sludge can be further squeezed to squeeze the liquid inside. The liquid is discharged to the rear end through the extrusion port 25 and finally recovered by the collecting cover 16. Through this arrangement, the water content of the sludge after dehydration is ensured to be low.

[0054] Before dehydration, the sludge generally needs to be mixed with a flocculant. The mixing box 6 is provided with a stirring part, which can be used to mix the sludge and the flocculant. After that, the mixed sludge is discharged into the center tube 7 through the input pipe 11;

[0055] In traditional spiral extrusion, the edge of the spiral blade 8 is subjected to a large extrusion force and is easily damaged after long-term use. By providing the notch groove 13, the spiral blade 8 will move backward along the notch groove 13 during the process of squeezing the sludge solids. However, the sludge itself has adhesion, and a steel cable 14 is arranged in the notch groove 13 to make it easier for the sludge to be fixed in the notch groove 13. When the sludge is fixed in the notch groove 13, the carrier of the squeezed sludge becomes the sludge itself. Through this arrangement, the pressure on the spiral blade 8 will be greatly reduced, reducing the damage to the spiral blade 8 and prolonging the service life of the spiral blade 8.

[0056] The driving motor 21 drives the transmission roller 17 and the dewatering tank 1 to rotate at the same time, and the transmission roller 17 drives the central tube 7 to rotate to complete the sludge dewatering work. At the same time, the dewatering tank 1 also rotates, but there is a speed difference with the central tube 7. Since the dewatering tank 1 rotates itself, the problem of sludge always sticking to the inner wall of the dewatering tank 1 can be reduced, and the transfer work of the spiral blade 8 can be assisted;

[0057] The output roller 19 and the driving gear 20 are driven to rotate by the driving motor 21, thereby driving the gear plate 12 and the dewatering tank 1 to rotate. At the same time, the output roller 19 drives the transmission roller 17 and the central tube 7 to rotate through the belt 18. Since the diameter of the gear plate 12 is much larger than the diameter of the driving gear 20, the speed of the transmission roller 17 is much larger than the speed of the dewatering tank 1, thereby ensuring the normal operation of the sludge dewatering work, and using one power source to complete the differential rotation of the two components, reducing the difficulty of operation;

[0058] In the later stage of squeezing, as the sludge is squeezed to the top, it will eventually be squeezed into the discharge pipe 10. The metal rod in the discharge pipe 10 will block and eventually squeeze the sludge, so that the sludge finally thrown out to the throwing tank 2 can be fully dehydrated and finally collected by the recovery box 5;

[0059] The water outlet 15 is opened in the middle of the gear plate 12, so that the sludge near the edge is difficult to be discharged from the water outlet 15, and the collection cover 16 can collect the sewage discharged from multiple water outlets 15 and discharge it from the bottom;

[0060] Through two winding rollers 23, one for winding up the steel cable 14 and one for releasing the steel cable 14, the steel cable 14 on the outer side of the spiral blade 8 can be replaced after long-term use, thereby reducing the problem of the steel cable 14 breaking due to long-term use;

[0061] A reduction motor 24 is used to drive one of the winding rollers 23 to rotate. Since the two linkage gears 22 are meshed with each other, the two winding rollers 23 rotate in the same direction, completing the effect of releasing the steel cable 14 and winding the steel cable 14, thereby achieving the effect of replacing the outer steel cable 14 of the spiral blade 8.

[0062] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A sludge treatment and dehydration device, characterized in that: The invention comprises a dewatering tank (1), wherein a rotatable central tube (7) is arranged on the inner side of the dewatering tank (1), a spiral blade (8) is fixedly connected to the outer side of the central tube (7), a discharge tank (2) for receiving squeezed sludge is arranged on one end of the dewatering tank (1), a collection cover (16) for receiving water is arranged on the other end of the dewatering tank (1), the inner side of the central tube (7) is hollow, an input pipe (11) for injecting sludge is arranged in the middle of the inner side of the central tube (7), a plurality of discharge ports (9) are arranged on the surface of the central tube (7), and a plurality of extrusion ports (25) are arranged on the surface of the spiral blade (8) close to the central tube (7); The outer side of the spiral blade (8) is provided with a plurality of notched grooves (13) near the edge, and the plurality of notched grooves (13) are arranged in a spiral manner and at equal intervals. A steel cable (14) is arranged inside the spiral blade (8), and the steel cable (14) passes through the notched grooves (13). The outer edge of the spiral blade (8) is in contact with the inner wall of the dehydration tank (1); A transmission roller (17) is fixedly connected to one end of the central tube (7) close to the collecting cover (16), and the transmission roller (17) penetrates to the outside of the dehydration tank (1). A driving motor (21) is arranged on the outside of the central tube (7) for driving the transmission roller (17) and the dehydration tank (1) to rotate; A protection box (3) is arranged outside the dehydration tank (1), the drive motor (21) is fixedly connected to the protection box (3), an output roller (19) is fixedly connected to the output end of the drive motor (21), a driving gear (20) is fixedly connected to the outside of the output roller (19), a gear plate (12) is fixedly connected to one end of the dehydration tank (1) close to the drive motor (21), the gear plate (12) is meshed with the driving gear (20), a belt (18) is sleeved between the outside of the output roller (19) and the outside of the transmission roller (17), and the belt (18), the output roller (19) and the transmission roller (17) are all sleeved inside the protection box (3); Two winding rollers (23) are arranged at the end of the output roller (19), the two sides of the steel cable (14) pass through the notch groove (13), both ends of the steel cable (14) are located at the end of the output roller (19), the two ends of the steel cable (14) are respectively fixed to the two winding rollers (23), and the outer side of the winding roller (23) is provided with a reduction motor (24) for driving the winding roller (23) to rotate; One end of the winding roller (23) is fixedly connected to a linkage gear (22), the two linkage gears (22) are meshed with each other, a support frame is installed on the outside of the linkage gear (22), the reduction motor (24) is fixedly connected to one of the winding rollers (23), and a support frame is also installed between the outside of the reduction motor (24) and the winding roller (23).

2. A sludge treatment and dehydration device according to claim 1, characterized in that: The dehydration tank (1) is arranged at an angle, the height of the ejection tank (2) is higher than the height of the collecting cover (16), and the diameter of the central tube (7) close to the ejection tank (2) is smaller than the diameter of the central tube (7) close to the collecting cover (16).

3. A sludge treatment and dewatering device according to claim 2, characterized in that: The input pipe (11) passes through the middle of one end of the dehydration tank (1) close to the ejection tank (2), and the end of the input pipe (11) away from the dehydration tank (1) is fixedly connected to a mixing box (6).

4. A sludge treatment and dewatering device according to claim 3, characterized in that: A plurality of discharge pipes (10) are fixedly connected to one end of the dehydration tank (1) close to the ejection tank (2), a plurality of metal rods for lateral interception are fixedly connected inside the discharge pipes (10), the end of the dehydration tank (1) is rotatably connected to the ejection tank (2), and a recovery box (5) is fixedly connected to the bottom of the ejection tank (2).

5. A sludge treatment and dewatering device according to claim 4, characterized in that: The collecting cover (16) is fixedly connected to the protection box (3), the collecting cover (16) is slidably engaged with the gear plate (12), and a water outlet (15) for drainage is provided on the surface of the gear plate (12).

Images