Stacked spiral sludge thickener

Abstract

The utility model relates to a stacked spiral type sludge thickener, which comprises a sludge inlet pipe, a spiral main body, a sludge discharge component and a sludge pressing plate component, the spiral main body comprises a spiral conveying mechanism and a drainage mechanism positioned around the spiral conveying mechanism, the sludge inlet pipe leads to the feeding end of the spiral conveying mechanism, and the sludge pressing plate component is arranged on the sludge discharge component. The mud pressing plate assembly is arranged at the discharging end of the spiral conveying mechanism, and the mud discharging assembly is arranged on the outer side of the mud pressing plate assembly. The mud pressing plate assembly comprises a first end plate, a second end plate and an adjusting piece, the first end plate is connected to the discharging end of the spiral conveying mechanism, the second end plate is connected to the outer side of the first end plate, a first through hole is formed in the first end plate, a second through hole is formed in the second end plate, and the adjusting piece is connected to the adjusting piece. The adjusting piece is used for enabling the first end plate to move relative to the second end plate so that the overlapping area of the first through hole and the second through hole can be changed. The stacked spiral sludge thickener can conveniently adjust the water content of discharged sludge.

Description

TECHNICAL FIELD

[0001] The utility model relates to a sludge treatment technical field, concretely relates to a stacked screw type sludge thickener. BACKGROUND

[0002] With the further renewal of sludge dewatering market, the demand of sludge deep treatment is increasing, and in the whole sludge deep treatment process, sludge thickening pre-dewatering is an indispensable link, sludge thickening is the pretreatment process of sludge dewatering, generally requires that the solid content of sludge is concentrated from 1% to 5%, and the volume of sludge can be reduced by nearly 5 times or more, which greatly reduces the load of sludge conveying equipment, and is favored by users. At present, the sludge thickening process is mainly belt type sludge thickening, drum sludge thickening and stacked screw type sludge thickening, wherein the belt type sludge thickener and the drum type sludge thickener have the disadvantages of large occupied area, unstable solid content of discharged sludge and high recovery rate, and the stacked screw type sludge thickener has the advantages of small occupied area, large treatment capacity and stable solid content of discharged sludge. The subsequent treatment process or subsequent application of sludge puts forward different requirements for the solid content or water content of the sludge thickening treatment, and the current stacked screw type sludge thickener cannot conveniently adjust the solid content or water content of the discharged sludge. SUMMARY

[0003] In view of the defects of the prior art, the utility model aims at providing a stacked screw type sludge thickener which can conveniently adjust the water content of the discharged sludge.

[0004] To achieve the utility model's purpose, the utility model provides a stacked screw type sludge thickener, which comprises a sludge inlet pipe, a spiral main body, a sludge discharge assembly and a sludge pressing plate assembly, the spiral main body comprises a spiral conveying mechanism and a drainage mechanism located around the spiral conveying mechanism, the sludge inlet pipe is connected to the feeding end of the spiral conveying mechanism, the sludge pressing plate assembly is arranged at the discharging end of the spiral conveying mechanism, and the sludge discharge assembly is arranged outside the sludge pressing plate assembly; the sludge pressing plate assembly comprises a first end plate, a second end plate and an adjusting piece, the first end plate is connected to the discharging end of the spiral conveying mechanism, the second end plate is connected to the outside of the first end plate, the first end plate is provided with a first through hole, the second end plate is provided with a second through hole, and the adjusting piece is used for moving the first end plate relative to the second end plate to change the overlapping area of the first through hole and the second through hole.

[0005] In some embodiments of the utility model, the first end plate and the second end plate are both circular, the center of the first end plate is aligned with the center of the second end plate, and the adjusting member is used to rotate the first end plate relative to the second end plate, the first through hole and the second through hole are both arc-shaped strip holes, and the distance between the first through hole and the center of the first end plate is equal to the distance between the second through hole and the center of the second end plate.

[0006] In some embodiments of the utility model, the spiral body further comprises a mounting plate arranged at the discharging end of the spiral conveying mechanism, the mounting plate is provided with a third through hole, the edge of the second end plate is fixed around the third through hole by a first fastener, and the third through hole is connected to the second through hole; the first end plate is rotatably arranged between the mounting plate and the second end plate.

[0007] In some embodiments of the utility model, the adjusting member comprises an adjusting bolt, the first end plate is provided with a fourth through hole extending in the circumferential direction, and the adjusting bolt passes through the second end plate and cooperates with the fourth through hole.

[0008] In some embodiments of the utility model, the mud pressing plate assembly further comprises a discharging chute, and the discharging chute is connected to the second end plate and arranged around the second through hole.

[0009] In some embodiments of the utility model, the mud pressing plate assembly further comprises a spacer, and the spacer is arranged between the mounting plate and the edge of the second end plate.

[0010] In some embodiments of the utility model, the fourth through hole is at least two and uniformly arranged in the circumferential direction relative to the circular shape of the first end plate, the number of adjusting bolts is the same as the number of fourth through holes, the adjusting bolts are arranged one by one corresponding to the fourth through holes, and the adjusting bolt is a butterfly bolt.

[0011] In some embodiments of the utility model, the discharging chute is fixed on the second end plate by a second fastener, the bottom of the discharging chute is closer to the center of the second end plate relative to the opening of the discharging chute, and the size of the discharging chute gradually increases in the direction from the bottom to the opening.

[0012] In some embodiments of the utility model, the mud discharging assembly comprises a mud discharging opening, the spiral body comprises an end seat arranged at the discharging end of the spiral conveying mechanism, and the mud pressing plate assembly is located in the end seat; the upper end of the mud discharging opening is provided with a rectangular opening, the lower end of the end seat is also provided with a rectangular opening, the end seat and the mud discharging opening are connected, the rectangular opening at the upper end of the mud discharging opening is aligned with the rectangular opening at the lower end of the end seat; the lower end of the mud discharging opening is provided with a circular opening; and the size of the mud discharging opening gradually decreases from the upper end to the lower end.

[0013] In some embodiments of the utility model, the sludge discharge port includes the connecting portion, the reducing portion and the port which are sequentially arranged from top to bottom, the connecting portion is connected with the end seat, the reducing portion includes two opposite narrow side ends and two opposite flat side ends between the two opposite narrow side ends, the flat side end opposite to the spiral conveying mechanism is provided with a detachable cover.

[0014] In some embodiments of the utility model, the spiral conveying mechanism includes a mandrel and a blade spirally wound on the mandrel, the pitch of the blade gradually decreases along the direction from the feeding end to the discharging end of the spiral conveying mechanism.

[0015] In some embodiments of the utility model, the spiral body further includes a tail seat, an intermediate support, an end seat and a connecting rod, the tail seat is arranged at the feeding end of the spiral conveying mechanism and connected with the sludge inlet pipe, the end seat is arranged at the discharging end of the spiral conveying mechanism and connected with the sludge pressing plate assembly, the intermediate support is at least one, and the intermediate support is arranged between the feeding end and the discharging end of the spiral conveying mechanism, and the connecting rod is connected between adjacent tail seats and intermediate supports, between adjacent end seats and intermediate supports, and between two adjacent intermediate supports.

[0016] In some embodiments of the utility model, the drainage mechanism includes a plurality of dynamic rings, a plurality of static rings and a plurality of grid gap gaskets, the grid gap gasket has a water passage hole allowing water to pass through, the static ring outer side edge and the grid gap gasket are alternately arranged and connected to the connecting rod, and the dynamic ring is arranged in the gap between the inner side edges of two adjacent static rings and can move in the gap.

[0017] In some embodiments of the utility model, the spiral type sludge thickener further includes a conditioning tank, the conditioning tank includes a filtering cavity and a stirring cavity in communication with each other, and the stirring cavity is connected with the sludge inlet pipe.

[0018] In some embodiments of the utility model, the conditioning tank further includes a sludge inlet pipe, an overflow pipe and a filter screen, the outlet of the sludge inlet pipe, the inlet of the overflow pipe and the filter screen are arranged in the filtering cavity, the outlet of the sludge inlet pipe is lower than the inlet of the overflow pipe, and the filter screen is arranged between the outlet of the sludge inlet pipe and the stirring cavity.

[0019] In some embodiments of the utility model, the conditioning tank further includes a stirring shaft in the stirring cavity and a stirring paddle arranged on the stirring shaft.

[0020] In some embodiments of the utility model, the conditioning tank further includes a discharge pipe, and the discharge pipe is connected to the overflow pipe and communicates with the bottom of the stirring cavity.

[0021] In some embodiments of the utility model, the inlet pipe is a hose.

[0022] In some embodiments of the utility model, the stacked spiral sludge thickener further comprises a cleaning assembly, the cleaning assembly comprises a water inlet pipe, a water spraying pipe and a plurality of nozzles, the water inlet pipe is connected to the conditioning tank, the water spraying pipe is connected to the water inlet pipe, the water spraying pipe is arranged above the drainage mechanism, and the nozzles are arranged on the water spraying pipe and face the drainage mechanism.

[0023] In some embodiments of the utility model, a dosing opening is further arranged on the stirring cavity.

[0024] In some embodiments of the utility model, the conditioning tank further comprises a first driving mechanism, the first driving mechanism is arranged above the stirring cavity and is connected to the stirring shaft.

[0025] In some embodiments of the utility model, the stacked spiral sludge thickener further comprises a rack, the rack comprises a base, a support frame and a water collecting groove, the base is connected to the support frame, the conditioning tank is arranged on the base, the top end of the support frame is provided with an inclined support structure, the spiral main body is arranged on the support structure, and the discharge end of the spiral conveying mechanism is higher than the feeding end of the spiral conveying mechanism, and the water collecting groove is arranged in the support frame and below the drainage mechanism.

[0026] In some embodiments of the utility model, the stacked spiral sludge thickener further comprises a protective cover, the protective cover covers the spiral main body.

[0027] In some embodiments of the utility model, the stacked spiral sludge thickener further comprises an electric control box, the electric control box is arranged on the base, and the electric control box is adjacent to the conditioning tank.

[0028] In some embodiments of the utility model, the support frame is provided with lifting lugs and / or square holes.

[0029] In some embodiments of the utility model, the stacked spiral sludge thickener further comprises a second driving mechanism, the second driving mechanism is arranged outside the output end of the spiral conveying mechanism and passes through the sludge pressing plate assembly, and the second driving mechanism is used for driving the spiral conveying mechanism.

[0030] In some embodiments of the utility model, the spiral main body is two and arranged side by side, the inlet pipe, the cleaning assembly and the second driving mechanism are two respectively and correspond to the spiral main body one by one.

[0031] In some embodiments of the utility model, the cleaning assembly further includes a triangular support, the triangular support is equipped with C-shaped pipe base at both ends, the water spraying pipe is located in the C-shaped pipe base.

[0032] Compared with the prior art, the utility model can achieve the following beneficial effects.

[0033] The spiral type sludge thickener of the utility model, through setting the first end plate and the second end plate which can relatively move at the discharging end of the spiral conveying mechanism, utilizing the overlapping area change of the first through hole and the second through hole caused by the relative movement of the first end plate and the second end plate, the size of the hole formed by the first through hole and the second through hole for the sludge after pre-dewatering is changed, the pressure of the sludge in the spiral conveying mechanism is also changed by the first end plate and the second end plate, and the drainage capacity is also changed when the sludge passes through the drainage mechanism, so that the solid content or water content of the discharged sludge can be adjusted. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 It is the front view structural schematic diagram of the utility model spiral type sludge thickener embodiment.

[0035] Figure 2 It is the top view structural schematic diagram of the utility model spiral type sludge thickener embodiment.

[0036] Figure 3 It is the front view structural schematic diagram of the utility model spiral type sludge thickener embodiment rack.

[0037] Figure 4 It is the top view structural schematic diagram of the utility model spiral type sludge thickener embodiment rack.

[0038] Figure 5 It is the front view structural schematic diagram of the utility model spiral type sludge thickener embodiment spiral main body.

[0039] Figure 6 It is the top view structural schematic diagram of the utility model spiral type sludge thickener embodiment spiral main body.

[0040] Figure 7 It is the front view structural schematic diagram of the utility model spiral type sludge thickener embodiment water spraying pipe and spray head cooperation.

[0041] Figure 8 It is the side view structural schematic diagram of the utility model spiral type sludge thickener embodiment water spraying pipe and spray head cooperation.

[0042] Figure 9 It is the top view structural schematic diagram of the utility model spiral type sludge thickener embodiment water spraying pipe and spray head cooperation.

[0043] Figure 10It is the main view structural schematic drawing of the conditioning tank in the embodiment of the stacked screw sludge thickener of the utility model.

[0044] Figure 11 It is the side view structural schematic drawing of the conditioning tank in the embodiment of the stacked screw sludge thickener of the utility model.

[0045] Figure 12 It is the top view structural schematic drawing of the conditioning tank in the embodiment of the stacked screw sludge thickener of the utility model.

[0046] Figure 13 It is the main view structural schematic drawing of the sludge discharging assembly in the embodiment of the stacked screw sludge thickener of the utility model.

[0047] Figure 14 It is the side view structural schematic drawing of the sludge discharging assembly in the embodiment of the stacked screw sludge thickener of the utility model.

[0048] Figure 15 It is the main view structural schematic drawing of the sludge pressing plate assembly in the embodiment of the stacked screw sludge thickener of the utility model.

[0049] Figure 16 It is the side view structural schematic drawing of the sludge pressing plate assembly in the embodiment of the stacked screw sludge thickener of the utility model.

[0050] In the drawing, 100 - sludge inlet pipe, 200 - spiral main body, 210 - spiral conveying mechanism, 211 - mandrel, 212 - blade, 220 - drainage mechanism, 221 - moving ring, 222 - static ring, 223 - gauze gap washer, 230 - tail seat, 240 - intermediate support, 250 - end seat, 251 - mounting plate, 260 - connecting rod, 300 - sludge discharging assembly, 310 - connecting part, 320 - reducing part, 321 - narrow side end, 322 - flat plate side end, 323 - cover, 330 - port, 400 - sludge pressing plate assembly, 410 - first end plate, 411 - first through hole, 412 - fourth through hole, 420 - second end plate, 421 - second through hole, 430 - adjusting piece, 440 - discharge chute, 450 - spacer, 500 - conditioning tank, 510 - filtering cavity, 511 - sludge inlet pipe, 512 - overflow pipe, 513 - filter screen, 520 - stirring cavity, 521 - stirring shaft, 522 - stirring paddle, 523 - emptying pipe, 524 - first driving mechanism, 600 - cleaning assembly, 610 - water inlet pipe, 620 - water spraying pipe, 630 - spray head, 640 - triangular support, 641 - C-shaped pipe base, 700 - rack, 710 - base, 720 - support frame, 721 - lifting lug, 722 - plug-in square hole, 730 - water receiving groove, 740 - shroud, 750 - water outlet, 800 - electric control box, 900 - second driving mechanism.

[0051] The utility model will be explained further in detail in combination with the drawings and specific embodiment. DETAILED DESCRIPTION

[0052] As Figures 1 to 16 shown, the embodiment of the present application provides a stacked screw sludge thickener, which is a device for sludge dewatering pretreatment and belongs to the technical field of resources and environment. The stacked screw sludge thickener can be used as a pre-dewatering equipment in a sludge treatment process to provide sludge with a specific stable solid content rate for a sludge deep dewatering machine at the back end.

[0053] Specifically, the stacked screw sludge thickener comprises a sludge inlet pipe 100, a screw body 200, a sludge discharge assembly 300 and a sludge pressing plate assembly 400, wherein the sludge inlet pipe 100 is used for inputting sludge, the screw body 200 is used for conveying and compressing sludge, the sludge discharge assembly 300 is used for outputting sludge, and the sludge pressing plate assembly 400 is used for providing pressure.

[0054] The screw body 200 comprises a screw conveying mechanism 210 and a drainage mechanism 220 located around the screw conveying mechanism 210, sludge is moved by the screw conveying mechanism 210, and water in the sludge is drained through the drainage mechanism 220. The sludge inlet pipe 100 is connected to the feeding end of the screw conveying mechanism 210, and sludge is input to the feeding end of the screw conveying mechanism 210. The sludge pressing plate assembly 400 is arranged at the discharging end of the screw conveying mechanism 210 to provide pressure for the sludge conveyed by the screw conveying mechanism 210 for dewatering. The sludge discharge assembly 300 is arranged outside the sludge pressing plate assembly 400 to receive the sludge discharged from the sludge pressing plate assembly 400 and output to downstream equipment. The sludge pressing plate assembly 400 comprises a first end plate 410, a second end plate 420 and an adjusting member 430, the first end plate 410 is connected to the discharging end of the screw conveying mechanism 210, the second end plate 420 is connected to the outside of the first end plate 410, the first end plate 410 is provided with a first through hole 411, the second end plate 420 is provided with a second through hole 421, and the adjusting member 430 is used to move the first end plate 410 relative to the second end plate 420 to change the overlapping area of the first through hole 411 and the second through hole 421, so that the blocking area of the sludge pressing plate assembly 400 to the sludge at the discharging end of the screw conveying mechanism 210 and the hole diameter for discharging change, thereby adjusting the solid content rate or water content rate of the sludge.

[0055] As can be seen from the above, the sludge pressing plate assembly of the stacked screw sludge thickener of the embodiment adopts two dynamic and static end plates, i.e., the first end plate 410 and the second end plate 420, to form holes of different sizes by adjusting the position relationship of the two through the adjusting member, so as to realize the structural design of adjustable sludge discharge diameter, and the size of the through diameter can be adjusted according to different sludge discharge water content requirements.

[0056] In some examples, the first end plate 410 and the second end plate 420 are both circular, the centers of the circles of the first end plate 410 and the second end plate 420 are aligned, and the adjusting member 430 is used to rotate the first end plate 410 about the center of the circle, and the change in the overlapping area of the first through hole 411 and the second through hole 421 is achieved by rotating the first end plate 410. In other embodiments, the first end plate can be moved linearly relative to the second end plate to achieve the change in the diameter of the discharge opening.

[0057] In some examples, the first through hole 411 and the second through hole 421 are both arc-shaped strip holes, the distance between the first through hole 411 and the center of the circle of the first end plate 410 is equal to the distance between the second through hole 421 and the center of the circle of the second end plate 420, and the overlapping area of the first through hole 411 and the second through hole 421 is easy to control.

[0058] In some examples, the screw body 200 further comprises a mounting plate 251 provided at the discharge end of the screw conveying mechanism 210, the mounting plate 251 has a third through hole allowing the sludge to pass through, the edge of the second end plate 420 is fixed around the third through hole by the first fastener, and the area of the third through hole is greater than the area of the second through hole 421. The third through hole is open to the second through hole 421, so that the sludge is guided to the second through hole 421. The first end plate 410 is rotatably provided between the mounting plate 251 and the second end plate 420, and the mounting plate 251 and the second end plate 420 limit the first end plate 410. The mounting plate 251 and the second end plate 420 can have a circular space to accommodate the first end plate 410.

[0059] In some examples, the adjusting member 430 comprises an adjusting bolt, the first end plate 410 is provided with a fourth through hole 412 extending in the circumferential direction, the adjusting bolt passes through the second end plate 420 and cooperates with the fourth through hole 412, when the first end plate 410 rotates, the fourth through hole 412 moves along the mounting position of the adjusting bolt, and the first end plate 410 is loosened or locked relative to the second end plate 420 by adjusting the tightness of the adjusting bolt, so as to achieve the adjustment and locking of the diameter of the discharge opening. In some examples, the fourth through hole 412 has an internal thread cooperating with the adjusting bolt, and when the adjusting bolt is detached from the fourth through hole 412, the first end plate 410 is allowed to move, and when the adjusting bolt is threadedly cooperated with the fourth through hole 412, the first end plate 410 is locked.

[0060] In some examples, the sludge pressing plate assembly 400 further comprises a discharge chute 440 connected to the second end plate 420 and arranged around the second through hole 421, the discharge chute 440 is used to guide the discharged sludge, so as to avoid the sludge from adhering to the adjusting member 430 and other components.

[0061] In some examples, the mud pressing plate assembly 400 further comprises a gasket 450 arranged between the mounting plate 251 and the edge of the second end plate 420, which can be a silica gel pad for example, and used to improve the sealing between the mud pressing plate assembly 400 and the mounting plate 251.

[0062] In some examples, the fourth through holes 412 are at least two and arranged uniformly in the circumferential direction relative to the circular shape of the first end plate 410, and the number of the adjusting bolts is the same as that of the fourth through holes 412, and the adjusting bolts are arranged one-to-one corresponding to the fourth through holes 412, so as to better rotate and position the first end plate 410 and lock more stably.

[0063] In some examples, the adjusting bolt is a butterfly bolt, which is convenient for manual operation for adjustment.

[0064] In some examples, the discharge chute 440 is fixed on the second end plate 420 by the second fastener, and the bottom of the discharge chute 440 is closer to the center of the second end plate 420 relative to the opening, and the size of the discharge chute 440 gradually increases in the direction from the bottom to the opening, so as to facilitate the discharge of sludge.

[0065] In some examples, the sludge discharging assembly 300 comprises a sludge discharging port, the spiral body 200 comprises an end seat 250 arranged at the discharge end of the spiral conveying mechanism 210, and the mounting plate 251 can be the part of the end seat 250 connected with the spiral conveying mechanism 210. The mud pressing plate assembly 400 is located in the end seat 250, which can avoid the sludge discharged from the mud pressing plate assembly 400 from splashing. The upper end of the sludge discharging port has a rectangular opening, and the lower end of the end seat 250 also has a rectangular opening. The end seat 250 and the sludge discharging port are connected, the rectangular opening at the upper end of the sludge discharging port is aligned with the rectangular opening at the lower end of the end seat 250, and the sludge is collected conveniently. The lower end of the sludge discharging port has a circular opening, and the size of the sludge discharging port gradually decreases from the upper end to the lower end. It can be seen that the sludge discharging port adopts a closed structure of the square mud discharging end into a circular pipe opening, which is beneficial for the connection of external pipelines and the collection of odor, and prevents the splashing of concentrated sludge.

[0066] In some examples, the sludge discharging port comprises a connecting part 310, a variable-diameter part 320 and a port 330 arranged in sequence from top to bottom, the connecting part 310 is connected with the end seat 250, the connecting part 310 has the above-mentioned rectangular opening, and the port 330 has a circular opening. The variable-diameter part 320 comprises two opposite narrow side ends 321 and two opposite flat side ends 322 located between the two opposite narrow side ends 321, and a detachable cover 323 is arranged on the flat side end 322 away from the spiral conveying mechanism 210 among the two opposite flat side ends 322, so as to facilitate the disassembly of the cover 323 for cleaning the sludge discharging port.

[0067] In some examples, the screw conveying mechanism 210 includes a mandrel 211 and a blade 212 spirally wound on the mandrel 211, the pitch of the blade 212 gradually decreases in the direction from the feed end to the discharge end of the screw conveying mechanism 210, thereby achieving the conveying and a certain degree of compression of the sludge.

[0068] In some examples, the screw body 200 further includes tail seats 230, intermediate supports 240, end seats 250 and connecting rods 260, the tail seats 230 are arranged at the feed end of the screw conveying mechanism 210 and connected with the sludge inlet pipe 100, the outer side of the tail seat 230 can be provided with a bearing for bearing the mandrel 211. The end seats 250 are arranged at the discharge end of the screw conveying mechanism 210 and connected with the sludge pressing plate assembly 400. The intermediate supports 240 are at least one, and the intermediate supports 240 are arranged between the feed end and the discharge end of the screw conveying mechanism 210. The connecting rods 260 are connected between adjacent tail seats 230 and intermediate supports 240, between adjacent end seats 250 and intermediate supports 240, and between two adjacent intermediate supports 240. The above structure is used to support the screw body 200 and improve the structural stability of the screw body 200.

[0069] In some examples, the drainage mechanism 220 includes a plurality of dynamic rings 221, a plurality of static rings 222 and a plurality of grid gap gaskets 223, the static rings 222 do not allow water to pass through, the grid gap gaskets 223 have water passing holes that allow water to pass through, and the outer side edges of the static rings 222 and the grid gap gaskets 223 are arranged alternately and connected to the connecting rods 260. The dynamic rings 221 are arranged in the gap between the inner side edges of the two adjacent static rings 222 and can move in the gap, and the dynamic rings 221 are located on the inner side of the grid gap gaskets 223. When the mandrel 211 and the blade 212 rotate, the blade 212 will push the dynamic ring 221 to move between the two adjacent static rings 222, so that the water can be squeezed into the gap and discharged through the grid gap gasket 223. The pitch of the screw blade 212, the outer diameter of the mandrel 211 and the thickness of the grid gap gasket 223 can be selected according to the characteristics of the sludge and the design parameter requirements.

[0070] In some examples, the stacked screw sludge thickener further includes a conditioning tank 500, which has the functions of sludge filtration and stirring. The conditioning tank 500 includes a filtration chamber 510 and a stirring chamber 520 that are in communication with each other, and the sludge can enter the stirring chamber 520 from the filtration chamber 510. The stirring chamber 520 is connected with the sludge inlet pipe 100, and the sludge inlet pipe 100 sends the sludge in the stirring chamber 520 into the screw body 200.

[0071] In some examples, the conditioning tank 500 further comprises a sludge inlet pipe 511, an overflow pipe 512 and a filter screen 513, the outlet of the sludge inlet pipe 511, the inlet of the overflow pipe 512 and the filter screen 513 are arranged in the filter cavity 510, the outlet of the sludge inlet pipe 511 is lower than the inlet of the overflow pipe 512, the sludge inlet pipe 511 can input sludge from bottom to top, the overflow pipe 512 can output sludge from top to bottom, when the amount of sludge entering the filter cavity 510 from the sludge inlet pipe 511 is too much, the excessive sludge flows out from the overflow pipe 512 and returns to a sludge storage device, for example, a sludge storage device of a previous process. The filter screen 513 is arranged between the outlet of the sludge inlet pipe 511 and the stirring cavity 520 for filtering the sludge. The sludge inlet pipe 511 can be connected with a pump.

[0072] In some examples, the conditioning tank 500 further comprises a stirring shaft 521 arranged in the stirring cavity 520 and a stirring paddle 522 arranged on the stirring shaft 521 for uniformly stirring the sludge in the stirring cavity 520.

[0073] In some examples, the conditioning tank 500 further comprises a discharge pipe 523 which is communicated with the bottom of the stirring cavity 520 and connected to the overflow pipe 512, the discharge pipe 523 is used for discharging the sludge in the stirring cavity 520.

[0074] In some examples, the stacked screw sludge thickener further comprises a cleaning assembly 600, the cleaning assembly 600 comprises a water inlet pipe 610, a water spraying pipe 620 and a plurality of spray heads 630, the water inlet pipe 610 is connected to the conditioning tank 500, and the conditioning tank 500 also serves as a support for the water inlet pipe 610. One end of the water inlet pipe 610 can be connected to a water source, for example, tap water or recycled water. The water spraying pipe 620 is connected to the other end of the water inlet pipe 610, for example, through a flexible water pipe. The water spraying pipe 620 is arranged above the drainage mechanism 220, the spray heads 630 are arranged on the water spraying pipe 620 and face the drainage mechanism 220. The cleaning assembly 600 is used for backwashing the screw body 200, and has a simple structure and stable backwashing effect.

[0075] In some examples, a dosing port is further arranged on the stirring cavity 520, and a flocculating agent or the like can be added to the stirring cavity 520 through the dosing port, and flocculation or the like can be achieved in the stirring cavity 520.

[0076] In some examples, the conditioning tank 500 further comprises a first driving mechanism 524 arranged above the stirring cavity 520 and connected to the stirring shaft 521, and the first driving mechanism 524 can be a speed reducer motor.

[0077] In some examples, the stacked screw sludge thickener further comprises a rack 700, the rack 700 comprises a base 710, a support frame 720 and a water collecting tank 730, the base 710 and the support frame 720 are connected, the conditioning tank 500 is arranged on the base 710, the support frame 720 has an inclined support structure at the top end, and the screw body 200 is arranged on the support structure. The rack 700 adopts an integrated structure, which provides guarantee for the stability of the relative position between the conditioning tank 500 and the screw body 200. The discharge end of the screw conveying mechanism 210 is higher than the feeding end of the screw conveying mechanism 210, which facilitates the discharge of water upstream of the discharge end. The water collecting tank 730 is arranged in the support frame 720 and below the drainage mechanism 220, and is used for collecting water discharged by the drainage mechanism 220. The bottom of the water collecting tank is provided with a water outlet 750 for water output.

[0078] In some examples, the stacked screw sludge thickener further comprises a protective cover 740 covering the screw body 200 to prevent water splashing.

[0079] In some examples, the stacked screw sludge thickener further comprises an electric control box 800 arranged on the base 710, the electric control box 800 is adjacent to the conditioning tank 500, and the electric control box 800 is used for controlling the actions of the conditioning tank 500, the screw body 200 and the like.

[0080] In some examples, the support frame 720 is provided with lifting lugs 721 and / or plug-in square holes 722 to facilitate the installation and movement of the stacked screw sludge thickener.

[0081] In some examples, the stacked screw sludge thickener further comprises a second driving mechanism 900 arranged outside the output end of the screw conveying mechanism 210 and penetrating the mud pressing plate assembly 400, and the second driving mechanism 900 is used for driving the screw conveying mechanism 210. The second driving mechanism 900 is a speed reducer motor, which realizes slow dehydration and conveying of sludge. The second driving mechanism 900 can be arranged outside the end seat 250.

[0082] In some examples, the screw body 200 is two and arranged side by side, the sludge inlet pipe 100, the cleaning assembly 600 and the second driving mechanism 900 are two respectively and arranged one by one corresponding to the screw body, which improves the sludge treatment efficiency.

[0083] In some examples, the cleaning assembly 600 further comprises a triangular bracket 640, which can be arranged on the rack 700 or the protective cover 740 or the intermediate support 240. The triangular bracket 640 is provided with C-shaped pipe seats 641 at both ends, and the water spraying pipe 620 is located in the C-shaped pipe seats 641. The C-shaped pipe seats 641 facilitate the installation and disassembly of the water spraying pipe 620.

[0084] Finally, it needs to be emphasized that the above is only the preferred embodiment of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A volute sludge thickener characterized by The invention relates to a screw conveyor, which comprises a mud inlet pipe, a screw body, a mud discharge assembly and a mud pressing plate assembly, wherein the screw body comprises a screw conveying mechanism and a drainage mechanism surrounding the screw conveying mechanism, the mud inlet pipe is connected to the feeding end of the screw conveying mechanism, the mud pressing plate assembly is arranged at the discharging end of the screw conveying mechanism, and the mud discharge assembly is arranged outside the mud pressing plate assembly; the mud pressing plate assembly comprises a first end plate, a second end plate and an adjusting member, the first end plate is connected to the discharging end of the screw conveying mechanism, the second end plate is connected to the outside of the first end plate, the first end plate is provided with a first through hole, the second end plate is provided with a second through hole, and the adjusting member is used to move the first end plate relative to the second end plate to change the overlapping area of the first through hole and the second through hole.

2. A volute sludge concentrator according to claim 1, characterised in that The first end plate and the second end plate are both circular, the center of the first end plate is aligned with the center of the second end plate, and the adjusting member is used to rotate the first end plate around the center. The first through hole and the second through hole are both arc-shaped strip holes, and the distance between the first through hole and the center of the first end plate is equal to the distance between the second through hole and the center of the second end plate.

3. A volute sludge concentrator according to claim 2, characterised in that The screw body further comprises a mounting plate arranged at the discharging end of the screw conveying mechanism, the mounting plate is provided with a third through hole, the edge of the second end plate is fixed around the third through hole by a first fastener, the third through hole is connected to the second through hole, and the first end plate is rotatably arranged between the mounting plate and the second end plate. The adjusting member comprises an adjusting bolt, the first end plate is provided with a fourth through hole extending in the circumferential direction, and the adjusting bolt passes through the second end plate and cooperates with the fourth through hole. The mud pressing plate assembly further comprises a discharging chute, which is connected to the second end plate and arranged around the second through hole.

4. A volute sludge concentrator according to claim 3, characterised in that The mud pressing plate assembly further comprises a spacer, which is arranged between the mounting plate and the edge of the second end plate. The fourth through hole is at least two and uniformly arranged in the circumferential direction relative to the circular shape of the first end plate, the number of the adjusting bolts is the same as the number of the fourth through holes, the adjusting bolts are arranged one by one corresponding to the fourth through holes, and the adjusting bolt is a butterfly bolt. The discharging chute is fixed on the second end plate by a second fastener, the bottom of the discharging chute is closer to the center of the second end plate relative to the opening of the discharging chute, and the size of the discharging chute gradually increases in the direction from the bottom to the opening.

5. A volute sludge concentrator according to any one of claims 1 to 4, characterised in that The mud discharge assembly comprises a mud discharge port, the screw body comprises an end seat arranged at the discharging end of the screw conveying mechanism, and the mud pressing plate assembly is arranged in the end seat; the upper end of the mud discharge port has a rectangular opening, the lower end of the end seat also has a rectangular opening, the end seat and the mud discharge port are connected, the rectangular opening of the upper end of the mud discharge port is aligned with the rectangular opening of the lower end of the end seat, the lower end of the mud discharge port has a circular opening, and the size of the mud discharge port gradually decreases from the upper end to the lower end.

6. A volute sludge concentrator according to claim 5, wherein The sludge discharge port comprises a connecting part, a reducing part and a port arranged in sequence from top to bottom, the connecting part is connected with the end seat; the reducing part comprises two opposite narrow side ends and two opposite flat side ends between the two opposite narrow side ends, the flat side end opposite to the spiral conveying mechanism is provided with a detachable cover.

7. A volute sludge concentrator according to any one of claims 1 to 4, characterised in that The spiral conveying mechanism comprises a core shaft and a blade spirally wound on the core shaft, the pitch of the blade gradually decreases in the direction from the feeding end to the discharging end of the spiral conveying mechanism; The spiral body further comprises a tail seat, an intermediate support, an end seat and a connecting rod, the tail seat is arranged at the feeding end of the spiral conveying mechanism and connected with the sludge inlet pipe, the end seat is arranged at the discharging end of the spiral conveying mechanism and connected with the sludge pressing plate assembly, the intermediate support is at least one, and the intermediate support is arranged between the feeding end and the discharging end of the spiral conveying mechanism; the connecting rod is connected between adjacent tail seats and intermediate supports, between adjacent end seats and intermediate supports, and between two adjacent intermediate supports; The drainage mechanism comprises a plurality of dynamic rings, a plurality of static rings and a plurality of grid gap gaskets, the grid gap gasket has a water passage hole allowing water to pass through, the static ring comprises a static ring outer side edge and a static ring inner side edge, the static ring outer side edge and the grid gap gasket are alternately arranged and connected to the connecting rod, and the dynamic ring is arranged in the gap between two adjacent static ring inner side edges and can move in the gap.

8. A volute sludge concentrator according to any one of claims 1 to 4, characterised in that The spiral type sludge thickener further comprises a conditioning tank, the conditioning tank comprises a filtering cavity and a stirring cavity in communication with each other; the stirring cavity is connected with the sludge inlet pipe; The conditioning tank further comprises a sludge inlet pipe, an overflow pipe and a filter screen, the outlet of the sludge inlet pipe, the inlet of the overflow pipe and the filter screen are arranged in the filtering cavity, the outlet of the sludge inlet pipe is lower than the inlet of the overflow pipe, and the filter screen is arranged between the outlet of the sludge inlet pipe and the stirring cavity; The conditioning tank further comprises a stirring shaft arranged in the stirring cavity and a stirring paddle arranged on the stirring shaft; The sludge inlet pipe is a flexible pipe.

9. A volute sludge concentrator according to claim 8, characterised in that The conditioning tank further comprises a discharge pipe, the discharge pipe is connected to the overflow pipe and communicates with the bottom of the stirring cavity; The spiral type sludge thickener further comprises a cleaning assembly, the cleaning assembly comprises a water inlet pipe, a water spraying pipe and a plurality of nozzles, the water inlet pipe is connected to the conditioning tank, the water spraying pipe is connected to the water inlet pipe, the water spraying pipe is arranged above the drainage mechanism, the nozzles are arranged on the water spraying pipe and face the drainage mechanism; A dosing port is further arranged on the stirring cavity; The conditioning tank further comprises a first driving mechanism, the first driving mechanism is arranged above the stirring cavity and connected to the stirring shaft.

10. A volute sludge concentrator according to claim 9, characterised in that The stacked screw sludge thickener further comprises a rack, the rack comprises a base, a support frame and a water collecting tank, the base and the support frame are connected, the conditioning tank is arranged on the base, the top end of the support frame is provided with an inclined support structure, the screw body is arranged on the support structure and the discharge end of the screw conveying mechanism is higher than the feeding end of the screw conveying mechanism, the water collecting tank is arranged in the support frame and below the drainage mechanism, and a drainage port is arranged at the bottom of the water collecting tank; The stacked screw sludge thickener further comprises a cover, the cover covers the screw body; The stacked screw sludge thickener further comprises an electric control box, the electric control box is arranged on the base, and the electric control box is adjacent to the conditioning tank; The support frame is provided with lifting lugs and / or plug-in square holes; The stacked screw sludge thickener further comprises a second driving mechanism, the second driving mechanism is arranged outside the output end of the screw conveying mechanism and passes through the mud pressing plate assembly, and the second driving mechanism is used for driving the screw conveying mechanism; the second driving mechanism is a speed reducer motor; The screw body is two and arranged side by side, the mud inlet pipe, the cleaning assembly and the second driving mechanism are two respectively and arranged one by one corresponding to the screw body; the cleaning assembly further comprises a triangular support, the two ends of the triangular support are provided with C-shaped pipe seats, and the water spraying pipe is arranged in the C-shaped pipe seat.

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