Stacked spiral sludge dewatering device and process

Abstract

The invention discloses a stacked spiral sludge dewatering device and process, and belongs to the technical field of sludge treatment.The device comprises a dewatering cylinder, a rotating roller and a filter screen, and the left side of the dewatering cylinder is fixedly connected with a sludge discharging bin; the rotating roller is located in the center of the dewatering cylinder and driven by a motor, the outer wall of the rotating roller is fixedly connected with a spiral blade, the screw pitch of the spiral blade is gradually decreased from right to left, and the rotating roller comprises a thick roller, a thin roller and a gradual change roller; the sludge dewatering device disclosed by the invention has the beneficial effects that 1, the gradual change roller and the screw pitch gradual change type spiral blade are arranged, so that the volume of sludge is continuously reduced in the sludge conveying process, and the dewatering effect is improved; bristles are arranged to clean the filter screen, so that the filter screen is prevented from being blocked to affect the dewatering effect; and 3, a back pressure ring is arranged, and the pre-pressure of the back pressure ring can be adjusted, so that the pre-pressure of the back pressure plate can be adjusted as required, and the sludge dewatering degree is further adjusted.

Description

Technical Field

[0001] The invention relates to the technical field of sludge treatment, and in particular to a screw stack type sludge dewatering device and process. Background Art

[0002] Sludge is the sedimentation product of sewage. It is a thick substance between liquid and solid. It has great fluidity. If it is not dehydrated, it will not only occupy a large area but also be inconvenient to transport.

[0003] In the prior art, sludge is generally dehydrated by a spiral dewatering machine, the pitch of the spiral blades and the diameter of the conveying cylinder are fixed. During the dehydration process, the sludge extrusion effect is poor, resulting in a poor dehydration effect. A filter is generally provided at the bottom of the conveying cylinder for dehydration. The filter is prone to clogging during use, and a back pressure plate is generally provided at the dry mud outlet of the conveying cylinder to achieve sludge extrusion dehydration. The pressure of the back pressure plate is constant, resulting in the inability to adjust the degree of dehydration as needed. Summary of the invention

[0004] In order to solve the above problems, the present invention provides a screw stack type sludge dewatering device and process, and the present invention is achieved through the following technical solutions.

[0005] A screw stack type sludge dewatering device, comprising:

[0006] A dehydration cylinder, wherein the dehydration cylinder is arranged transversely, a feed bin is fixedly connected to the upper right side of the dehydration cylinder, a drainage bin is fixedly connected to the bottom of the dehydration cylinder, a drainage port is fixedly connected to the bottom of the right side plate of the drainage bin, a mud discharge bin is fixedly connected to the left side of the dehydration cylinder, and the bottom of the mud discharge bin is open;

[0007] A rotating roller, wherein the rotating roller is located at the center of the dewatering cylinder, a mounting shaft is fixedly connected to the left end of the rotating roller, and the other end of the mounting shaft is rotatably connected to the inner wall of the left side plate of the mud discharge bin, a motor is fixedly connected to the right side of the dewatering cylinder through a frame, and the output shaft of the motor is butted with the right end of the rotating roller, a spiral blade is fixedly connected to the outer periphery of the rotating roller, and the pitch of the spiral blade decreases from right to left, the rotating roller comprises a coarse roller, a fine roller and a gradient roller, and the diameter of the gradient roller increases from right to left, and the coarse roller and the fine roller are respectively fixed to the left and right ends of the gradient roller;

[0008] The filter screen is arranged at the bottom of the dehydration cylinder and is evenly arranged horizontally.

[0009] Preferably, a screen is fixedly connected in the feed bin, and the screen is in an upwardly arched arc shape.

[0010] Preferably, a material guide seat is fixedly connected to the bottom of the drainage bin, and the upper surface of the material guide seat is inclined downward from left to right.

[0011] Preferably, a rotating sleeve is fixedly connected to the right end of the fine roller, the rotating sleeve is rotatably connected to the center of the right side plate of the dewatering roller, and the output shaft of the motor is connected to the fine roller.

[0012] Preferably, an axle is rotatably connected between the front and rear side plates of the drainage bin, and track rods are fixedly connected to the front and rear sides of the axle, a transmission wheel is fixedly connected to the right end of the axle and the output shaft of the motor, and the two transmission wheels are linked by belts, a filter port is provided at the bottom of the dehydration cylinder, sliding cavities are provided on both sides of the filter port, the filter screen is fixedly connected to the filter plate, and the two ends of the filter plate are slidably connected in the sliding cavity, a drive plate is fixedly connected to the bottom of the filter plate through front and rear symmetrical support rods, the drive plate is slidably connected to the track rod, a reciprocating thread groove is provided at a position corresponding to the drive plate on the axle, and the drive plate engages with the reciprocating thread groove.

[0013] Preferably, mounting rods are evenly fixed longitudinally in the drainage bin above the shaft rod, and a group of brush plates are fixedly connected to the positions of the mounting rods corresponding to the filter screens, and the brush plates are densely covered with bristles.

[0014] Preferably, a back pressure ring is slidably connected to the coarse roller, a first groove is provided on the outer ring of the back pressure ring, a second groove is provided on the left end of the dewatering cylinder, a cover cylinder is fixedly connected to the left side of the mud discharge bin, an adjusting screw is rotatably connected to the center of the cover cylinder, a guide rod is evenly fixedly connected to the left circumference of the back pressure ring, the guide rod is slidably connected to the left plate of the mud discharge bin, a vibrating disk is fixedly connected to the left end of the guide rod, a avoidance hole is provided in the center of the vibrating disk, a limiting rod is evenly fixedly connected to the left circumference of the vibrating disk, a limiting block is fixedly connected to the left end of the limiting rod, an adjusting disk is slidably connected to the limiting rod, the adjusting disk is meshed with the adjusting screw, a spring is sleeved on the limiting rod between the adjusting disk and the vibrating disk.

[0015] Preferably, a driving bin is fixedly connected to the left side of the cover cylinder, a driven bevel gear is fixedly connected to the left end of the adjusting screw, a rotating shaft is rotatably connected to the top plate of the driving bin, a knob and a driving bevel gear are respectively fixedly connected to the upper and lower ends of the rotating shaft, the driving bevel gear is meshed with the driven bevel gear, and the number of teeth of the driving bevel gear is less than the number of teeth of the driven bevel gear.

[0016] A screw stacking sludge dewatering process comprises the following steps:

[0017] S1, adjust the position of the adjusting disk to adjust the pre-pressure of the back pressure ring;

[0018] S2, the sludge to be dehydrated is input through the feed bin, and the screen filters the stones in the sludge;

[0019] S3, start the motor to drive the roller and spiral blades to rotate, and drive the filter to move back and forth.

[0020] The beneficial effects of the present invention are as follows:

[0021] 1. The present invention is provided with a gradually changing roller and a spiral blade with a gradually changing pitch. During the sludge transportation process, the volume of the sludge is continuously reduced, thereby achieving progressive extrusion dehydration of the sludge and improving the dehydration effect;

[0022] 2 The present invention is provided with bristles, and the filter screen can be reciprocated left and right. During the movement of the filter screen, the filter screen is cleaned by the bristles to avoid clogging of the filter screen and affecting the dehydration effect;

[0023] 3. The present invention is provided with a back pressure ring, and the pre-pressure of the back pressure ring can be adjusted, so that the pre-pressure of the back pressure plate can be adjusted as needed, thereby adjusting the degree of sludge dehydration. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the description of the specific implementation methods will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 : An axonometric view of a screw stack type sludge dewatering device according to the present invention;

[0026] Figure 2 : A cross-sectional view of a screw stack type sludge dewatering device according to the present invention;

[0027] Figure 3 : Figure 2 A partial enlarged view of point A shown;

[0028] Figure 4 : Figure 2 A partial enlarged view of point B shown;

[0029] Figure 5 : A schematic diagram of the internal structure of the drainage bin of the present invention;

[0030] Figure 6 : Schematic diagram of the installation of the driving board of the present invention;

[0031] Figure 7 : Figure 2 A local enlarged view of point C shown;

[0032] Figure 8 : A half-section view of the mud discharge bin, cover tube and drive bin described in the present invention.

[0033] The reference numerals are as follows:

[0034] 1-dewatering cylinder, 11-feeding bin, 12-drainage bin, 13-drainage port, 14-mud discharge bin, 15-screen, 16-material guide seat, 17-rotating sleeve, 2-roller, 201-coarse roller, 202-fine roller, 203-gradient roller, 21-installation shaft, 22-frame, 23-motor, 24-spiral blade, 3-filter screen, 31-shaft rod, 32-track rod, 33-drive wheel, 34-belt, 35-filter port, 36-sliding cavity, 37-filter plate, 38-support rod, 39- Driving plate, 310-reciprocating thread groove, 311-mounting rod, 312-brush plate, 313-brush hairs, 41-back pressure ring, 42-first groove, 43-second groove, 44-cover tube, 45-adjusting screw, 46-guide rod, 47-vibration plate, 48-avoidance hole, 49-limiting rod, 410-limiting block, 411-adjusting plate, 412-spring, 413-driving bin, 414-driven bevel gear, 415-rotating shaft, 416-knob, 417-driving bevel gear. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] like Figure 1-8 As shown, a screw stack type sludge dewatering device comprises:

[0037] The dehydration cylinder 1 is arranged horizontally, a feed bin 11 is fixedly connected to the upper right of the dehydration cylinder 1, a drainage bin 12 is fixedly connected to the bottom of the dehydration cylinder 1, a drainage port 13 is fixedly connected to the bottom of the right side plate of the drainage bin 12, a mud discharge bin 14 is fixedly connected to the left side of the dehydration cylinder 1, and the bottom of the mud discharge bin 14 is open;

[0038] The roller 2 is located at the center of the dewatering cylinder 1. The left end of the roller 2 is fixedly connected with a mounting shaft 21. The other end of the mounting shaft 21 is rotatably connected to the inner wall of the left side plate of the mud discharge bin 14. The right side of the dewatering cylinder 1 is fixedly connected with a motor 23 through a frame 22. The output shaft of the motor 23 is connected to the right end of the roller 2. The outer periphery of the roller 2 is fixedly connected with a spiral blade 24. The pitch of the spiral blade 24 decreases from right to left. The roller 2 includes a coarse roller 201, a fine roller 202 and a gradient roller 203. The diameter of the gradient roller 203 increases from right to left. The coarse roller 201 and the fine roller 202 are respectively fixedly connected to the left and right ends of the gradient roller 203.

[0039] The filter screen 3 is arranged at the bottom of the dehydration cylinder 1 and is evenly arranged in the horizontal direction.

[0040] Furthermore, a screen 15 is fixedly connected in the feed bin 11, and the screen 15 is in an arc shape that arches upward.

[0041] Furthermore, a material guide seat 16 is fixedly connected to the bottom of the drainage bin 12 , and an upper surface of the material guide seat 16 is tilted downward from left to right.

[0042] Furthermore, a rotating sleeve 17 is fixedly connected to the right end of the fine roller 202 , and the rotating sleeve 17 is rotatably connected to the center of the right side plate of the dewatering roller, and the output shaft of the motor 23 is connected to the fine roller 202 .

[0043] Furthermore, an axle rod 31 is rotatably connected between the front and rear side plates of the drainage bin 12, and track rods 32 are fixedly connected to the front and rear sides of the axle rod 31. A transmission wheel 33 is fixedly connected to the right end of the axle rod 31 and the output shaft of the motor 23, and the two transmission wheels 33 are linked by a belt 34. A filter port 35 is provided at the bottom of the dehydration cylinder 1, and sliding cavities 36 are provided on both sides of the filter port 35. The filter screen 3 is fixedly connected to the filter plate 37, and the two ends of the filter plate 37 are slidably connected in the sliding cavity 36. The bottom of the filter plate 37 is fixedly connected to a drive plate 39 through front and rear symmetrical support rods 38. The drive plate 39 is slidably connected to the track rod 32, and a reciprocating thread groove 310 is provided at a position corresponding to the drive plate 39 on the axle rod 31, and the drive plate 39 engages with the reciprocating thread groove 310.

[0044] Furthermore, a mounting rod 311 is evenly fixed longitudinally in the drainage bin 12 above the shaft rod 31 , and a group of brush plates 312 are fixed at positions of the mounting rod 311 corresponding to the filter screen 3 , and the brush plates 312 are densely covered with bristles 313 .

[0045] Furthermore, a back pressure ring 41 is slidably connected to the coarse roller 201, a first groove 42 is provided on the outer ring of the back pressure ring 41, a second groove 43 is provided on the left end of the dewatering cylinder 1, a cover cylinder 44 is fixedly connected to the left side of the mud discharge bin 14, an adjusting screw 45 is rotatably connected to the center of the cover cylinder 44, a guide rod 46 is evenly fixedly connected to the left circumference of the back pressure ring 41, the guide rod 46 is slidably connected to the left side plate of the mud discharge bin 14, a vibrating disk 47 is fixedly connected to the left end of the guide rod 46, a avoidance hole 48 is provided in the center of the vibrating disk 47, a limiting rod 49 is evenly fixedly connected to the left circumference of the vibrating disk 47, a limiting block 410 is fixedly connected to the left end of the limiting rod 49, an adjusting disk 411 is slidably connected to the limiting rod 49, the adjusting disk 411 is meshed with the adjusting screw 45, a spring 412 is sleeved on the limiting rod 49 between the adjusting disk 411 and the vibrating disk 47.

[0046] Furthermore, a driving bin 413 is fixedly connected to the left side of the cover cylinder 44, a driven bevel gear 414 is fixedly connected to the left end of the adjusting screw 45, a rotating shaft 415 is rotatably connected to the top plate of the driving bin 413, a knob 416 and a driving bevel gear 417 are respectively fixedly connected to the upper and lower ends of the rotating shaft 415, the driving bevel gear 417 is meshed with the driven bevel gear 414, and the number of teeth of the driving bevel gear 417 is less than the number of teeth of the driven bevel gear 414.

[0047] A screw stacking sludge dewatering process comprises the following steps:

[0048] S1, adjusting the position of the adjusting disk 411 to adjust the pre-pressure of the back pressure ring 41.

[0049] like Figure 2 as well as Figure 7-Figure 8 As shown, the adjusting disk 411 can be driven to move to the right by rotating the adjusting screw 45 until the first groove 42 and the second groove 43 are fitted together. At this time, when the adjusting disk 411 continues to move, the back pressure ring 41 and the vibration disk 47 remain stationary, and the spring 412 is compressed. The compression reaction force of the spring 412 is transmitted to the back pressure ring 41 through the vibration disk 47 and the limit rod 49, thereby providing pre-pressure to the back pressure ring 41. The greater the compression degree of the spring 412, the greater the pre-pressure of the back pressure ring 41, so that the sludge squeezed out through the back pressure ring 41 is more thoroughly dehydrated, that is, the dehydration degree of the sludge can be adjusted.

[0050] The rotating shaft 415 and the active bevel gear 417 can be driven to rotate by the knob 416, thereby driving the driven bevel gear 414 and the adjusting screw 45 to rotate. Since the number of teeth of the active bevel gear 417 is smaller than that of the driven bevel gear 414, it can achieve a labor-saving effect, and the vibration plate 47 can be driven to move with less force.

[0051] S2, the sludge to be dehydrated is input through the feed bin 11, and the screen 15 filters the stones in the sludge.

[0052] like Figure 1-Figure 2 As shown, sludge is added into the dewatering cylinder 1 through the feed bin 11, and the screen 15 intercepts hard objects such as stones in the sludge.

[0053] S3, start the motor 23, drive the roller 2 and the spiral blade 24 to rotate, and drive the filter screen 3 to move back and forth.

[0054] like Figure 2As shown, when the motor 23 is working, it drives the roller 2 and the spiral blade 24 to rotate through the output shaft, and the sludge is transported from left to right. Since the pitch of the spiral blade 24 decreases from left to right, and the gap between the gradient roller 203 and the dewatering cylinder 1 decreases from left to right, the space becomes smaller during the sludge transportation process, thereby squeezing and dehydrating the sludge, and the sewage is discharged through the filter screen 3 and enters the drainage bin 12, and slides down through the guide seat 16, and is finally discharged from the drainage port 13.

[0055] like Figure 3 As shown, the roller 2 is rotatably connected to the right side plate of the dehydration cylinder 1 through the rotating sleeve 17, and is Figure 3 It can be seen that an annular sealing ring is fixed on the rotating sleeve 17, and a through hole for the rotating sleeve 17 to pass through is opened on the right side plate of the dehydration cylinder 1, and an annular groove corresponding to the sealing ring is opened on the inner wall of the through hole. Compared with the traditional bearing-type rotating connection structure, it can be better waterproof.

[0056] The sludge after extrusion and dehydration is discharged from the left end of the dehydration cylinder 1 , and the sludge squeezes the back pressure ring 41 , and the back pressure ring 41 further extrudes and dehydrates the sludge, and the dry sludge is discharged from the bottom of the sludge discharge bin 14 .

[0057] like Figure 2 as well as Figure 4-Figure 6 As shown, the output shaft of the motor 23 drives the shaft 31 to rotate through the transmission wheel 33 and the belt 34. Since the drive plate 39 is engaged with the reciprocating thread groove 310 on the shaft 31, the drive plate 39 drives the filter plate 37 and the filter screen 3 to move back and forth left and right. During this process, the bristles 313 brush the filter screen 3, which can keep the filter screen 3 clean and improve the water filtering effect.

[0058] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A screw stack type sludge dewatering device, characterized in that: include: A dehydration cylinder, wherein the dehydration cylinder is arranged transversely, a feed bin is fixedly connected to the upper right side of the dehydration cylinder, a drainage bin is fixedly connected to the bottom of the dehydration cylinder, a drainage port is fixedly connected to the bottom of the right side plate of the drainage bin, a mud discharge bin is fixedly connected to the left side of the dehydration cylinder, and the bottom of the mud discharge bin is open; A rotating roller, wherein the rotating roller is located at the center of the dewatering cylinder, a mounting shaft is fixedly connected to the left end of the rotating roller, and the other end of the mounting shaft is rotatably connected to the inner wall of the left side plate of the mud discharge bin, a motor is fixedly connected to the right side of the dewatering cylinder through a frame, and the output shaft of the motor is butted with the right end of the rotating roller, a spiral blade is fixedly connected to the outer periphery of the rotating roller, and the pitch of the spiral blade decreases from right to left, the rotating roller comprises a coarse roller, a fine roller and a gradient roller, and the diameter of the gradient roller increases from right to left, and the coarse roller and the fine roller are respectively fixed to the left and right ends of the gradient roller; The filter screen is arranged at the bottom of the dehydration cylinder and is evenly arranged horizontally.

2. The screw stack sludge dewatering device according to claim 1, characterized in that: A screen is fixedly connected in the feed bin, and the screen is in an arc shape that arches upward.

3. The screw stack sludge dewatering device according to claim 1, characterized in that: A material guide seat is fixedly connected to the bottom of the drainage bin, and the upper surface of the material guide seat is inclined downward from left to right.

4. The screw stack type sludge dewatering device according to claim 1, characterized in that: The right end of the fine roller is fixedly connected with a rotating sleeve, the rotating sleeve is rotatably connected with the center of the right side plate of the dewatering roller, and the output shaft of the motor is butted against the fine roller.

5. The screw stack sludge dewatering device according to claim 4, characterized in that: An axle is rotatably connected between the front and rear side plates of the drainage bin, and track rods are fixedly connected to the front and rear sides of the axle, a transmission wheel is fixedly connected to the right end of the axle and the output shaft of the motor, and the two transmission wheels are linked by belts, a filter port is provided at the bottom of the dehydration cylinder, sliding cavities are provided on both sides of the filter port, the filter screen is fixed in the filter plate, and both ends of the filter plate are slidably connected in the sliding cavity, a driving plate is fixedly connected to the bottom of the filter plate through front and rear symmetrical support rods, the driving plate is slidably connected to the track rod, a reciprocating thread groove is provided at a position corresponding to the driving plate on the axle, and the driving plate engages with the reciprocating thread groove.

6. The screw stack sludge dewatering device according to claim 5, characterized in that: Mounting rods are evenly fixed longitudinally in the drainage bin above the shaft rod, and a group of brush plates are fixedly connected to the positions of the mounting rods corresponding to the filter screens, and the brush plates are densely covered with bristles.

7. The screw stack sludge dewatering device according to claim 1, characterized in that: A back pressure ring is slidably connected to the coarse roller, and a first groove is provided on the outer ring of the back pressure ring, and a second groove is provided on the left end of the dewatering cylinder, a cover cylinder is fixedly connected to the left side of the mud discharge bin, and an adjusting screw is rotatably connected to the center of the cover cylinder, a guide rod is evenly fixedly connected to the left circumference of the back pressure ring, and the guide rod is slidably connected to the left plate of the mud discharge bin, a vibrating disk is fixedly connected to the left end of the guide rod, and a avoidance hole is provided in the center of the vibrating disk, a limiting rod is evenly fixedly connected to the left circumference of the vibrating disk, and a limiting block is fixedly connected to the left end of the limiting rod, an adjusting disk is slidably connected to the limiting rod, the adjusting disk is meshed with the adjusting screw, and a spring is sleeved on the limiting rod between the adjusting disk and the vibrating disk.

8. The screw stack type sludge dewatering device according to claim 7, characterized in that: A driving bin is fixedly connected to the left side of the cover cylinder, a driven bevel gear is fixedly connected to the left end of the adjusting screw, a rotating shaft is rotatably connected to the top plate of the driving bin, a knob and a driving bevel gear are respectively fixedly connected to the upper and lower ends of the rotating shaft, the driving bevel gear is meshed with the driven bevel gear, and the number of teeth of the driving bevel gear is less than that of the driven bevel gear.

9. A screw stack sludge dewatering process, implemented based on a screw stack sludge dewatering device according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1, adjust the position of the adjusting disk to adjust the pre-pressure of the back pressure ring; S2, the sludge to be dehydrated is input through the feed bin, and the screen filters the stones in the sludge; S3, start the motor to drive the roller and spiral blades to rotate, and drive the filter to move back and forth.

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