Mud screening and conveying device

Abstract

The utility model discloses a mud screening and conveying device which comprises a machine frame and a screen drum arranged on the machine frame in a rotating mode, one end of the screen drum is provided with a feeding port, the other end of the screen drum is provided with a discharging port, the feeding port is higher than the discharging port, the screen drum comprises a plurality of sub screen drums which are in butt joint in sequence, and the sub screen drums are arranged on the machine frame. And the apertures of the sieve pores of the sub-sieve drums are sequentially increased along the direction from the feed port to the discharge port. The mud screening and conveying device has the advantages that the structure is simple, mud with different particle sizes can be screened out in a classified mode, and the applicability is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to a sludge treatment technical field especially relates to a mud dirt screening conveyor. BACKGROUND

[0002] The dredging sludge is a common mud dirt, is the deposit dredged in the drainage pipeline maintenance, and its composition is complex, including domestic waste, slag, sand, organic sludge and sewage mixture. At present, the process of washing and screening is usually used to treat the dredging sludge.

[0003] The Chinese patent document with the publication number CN211570438U discloses a drum type sludge dewatering machine, the sludge enters the roller through the feed pipe, the roller is driven to rotate through the transmission of the rotating shaft, the sludge in the roller moves along the inner side wall of the roller, the free water in the sludge is discharged into the lower end position of the dehydration tank through the water outlet hole and is discharged from the water outlet pipe in the process of moving, the sludge in the roller slides to the downward one end of the roller under the action of gravity, and is discharged into the discharge plate from the first discharge port, and finally is discharged through the second discharge port. The applicant finds that there are some deficiencies in the technical scheme:

[0004] 1) The cylinder can only screen the mud dirt of a single particle size, cannot grade screen the mud dirt, the particle size range of the screened mud dirt is large, is difficult to reuse, and has poor applicability.

[0005] 2) The cylinder is inclined, the mud dirt is discharged under the action of gravity, the mud dirt stays in the cylinder for a short time under the double action of the inclination angle of the cylinder and the rotating speed, the screening effect is poor, and the mud dirt at the feed end is easy to accumulate, so the screening efficiency is low.

[0006] 3) Only flushing water is used to flush to reduce the mud dirt residue on the cylinder wall, and the cleaning effect is poor. UTILITY MODEL CONTENT

[0007] The utility model solves the technical problem that the prior art is overcome, provides a mud dirt screening conveyor device that can grade screen mud dirt of different particle sizes and has strong applicability.

[0008] To solve the above technical problems, the utility model adopts the following technical scheme:

[0009] A mud dirt screening conveyor device, comprising a rack and a screen cylinder rotatably arranged on the rack, one end of the screen cylinder is provided with a feed inlet, the other end is provided with a discharge port, the height of the feed inlet is higher than that of the discharge port, the screen cylinder comprises a plurality of sequentially connected sub-screen cylinders, and the screen hole diameters of the sub-screen cylinders sequentially increase in the direction from the feed inlet to the discharge port.

[0010] As a further improvement of the above technical scheme:

[0011] The inner periphery of the screen cylinder is provided with a plurality of material blocking assemblies arranged in an axial direction, and the material blocking assembly comprises a plurality of baffles arranged in a circumferential direction.

[0012] The baffles of each material blocking assembly are arranged in an interlaced manner.

[0013] A gap is formed between two adjacent baffles, and the baffle of the material blocking assembly and the gap of the adjacent material blocking assembly overlap in an axial projection.

[0014] The lower portion of the screen cylinder is provided with a plurality of screening hoppers, and each screening hopper corresponds to each sub-screen cylinder.

[0015] The screen cylinder is provided with a flushing pipe on each side, and a plurality of cleaning brushes are arranged on the flushing pipe in an interval.

[0016] One end of the screen cylinder is provided with a brake, the rotating end of the brake is connected with a driving mechanism, the fixed end is connected with a rack through a fixed shaft, and the fixed shaft penetrates through the screen cylinder and is rotationally connected with the screen cylinder.

[0017] At least one sub-screen cylinder near the feed inlet is provided with a stirring rod, and the stirring rod is connected with the fixed shaft.

[0018] The rack is provided with a height adjusting seat, and one end of the fixed shaft away from the brake is arranged on the height adjusting seat.

[0019] The rotating end of the brake is provided with a rotating shaft, and the rotating shaft is connected with the output shaft of the driving mechanism through a universal joint.

[0020] Compared with the prior art, the advantages of the present application are:

[0021] The mud screening and conveying device can classify and screen mud of different particle sizes, is beneficial to the classification and utilization of mud of different particle sizes, can meet the different use requirements of mud of different particle sizes, and has high applicability.

[0022] The mud screening and conveying device is provided with a plurality of material blocking assemblies along the axial direction of the screen cylinder, the material blocking assembly comprises a plurality of baffles arranged in a circumferential direction of the screen cylinder, the baffles can block the mud when the mud is transported in the screen cylinder, the residence time of the mud in the screen cylinder is prolonged, the mud is fully separated, and the screening effect is good.

[0023] The mud screening and conveying device is provided with a plurality of material blocking assemblies along the axial direction of the screen cylinder, the material blocking assembly comprises a plurality of baffles arranged in a circumferential direction of the screen cylinder, the baffles can block the mud when the mud is transported in the screen cylinder, the residence time of the mud in the screen cylinder is prolonged, the mud is fully separated, and the screening effect is good.

[0024] The mud screening and conveying device has the advantages that the two flushing pipes are symmetrically arranged on the two sides of the screen cylinder, the flushing pipe can brush off the mud and sand adhered on the screen cylinder, and the flushing and brushing are performed by the flushing brush, the fixed flushing pipe and the flushing brush can continuously brush the different parts of the screen cylinder due to the rotation of the screen cylinder, the mud and sand washing rate is high, the cleaning efficiency is high, the conveying pressure of the mud in the screen cylinder is reduced, and the cleaning frequency of the screen cylinder is reduced.

[0025] The mud screening and conveying device has the advantages that the two flushing pipes are symmetrically arranged on the two sides of the screen cylinder, the flushing pipe can brush off the mud and sand adhered on the screen cylinder, and the flushing and brushing are performed by the flushing brush, the fixed flushing pipe and the flushing brush can continuously brush the different parts of the screen cylinder due to the rotation of the screen cylinder, the mud and sand washing rate is high, the cleaning efficiency is high, the conveying pressure of the mud in the screen cylinder is reduced, and the cleaning frequency of the screen cylinder is reduced.

[0026] The mud screening and conveying device has the advantages that the two flushing pipes are symmetrically arranged on the two sides of the screen cylinder, the flushing pipe can brush off the mud and sand adhered on the screen cylinder, and the flushing and brushing are performed by the flushing brush, the fixed flushing pipe and the flushing brush can continuously brush the different parts of the screen cylinder due to the rotation of the screen cylinder, the mud and sand washing rate is high, the cleaning efficiency is high, the conveying pressure of the mud in the screen cylinder is reduced, and the cleaning frequency of the screen cylinder is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0027] Fig. 1 It is a front view of the mud screening and conveying device.

[0028] Fig. 2 It is an isometric view of the screen cylinder in the mud screening and conveying device.

[0029] Fig. 3 It is a front view of the screen cylinder in the mud screening and conveying device.

[0030] The numbers in the drawing represent: 1, screen cylinder; 11, feed inlet; 12, discharge outlet; 13, sub-screen cylinder; 14, material blocking assembly; 141, baffle; 142, gap; 15, fixed shaft; 16, rotating shaft; 161, stirring rod; 17, universal coupling; 18, feed hopper; 2, rack; 3, screening hopper; 4, brake; 5, driving mechanism; 6, height adjusting seat; 7, flushing pipe; 8, cleaning brush. DETAILED DESCRIPTION

[0031] The utility model will be made further detailed description in combination with drawing and specific embodiment of specification.

[0032] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0034] In this utility model, unless otherwise explicitly specified and limited, the terms "assembly," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0035] like Figs. 1 to 3 As shown, the sludge screening and conveying device of this embodiment includes a frame 2 and a screen cylinder 1 rotatably mounted on the frame 2. One end of the screen cylinder 1 has a feed inlet 11, and the other end has a discharge outlet 12. The height of the feed inlet 11 is higher than the height of the discharge outlet 12. The screen cylinder 1 includes multiple sub-screen cylinders 13 connected sequentially. The aperture of the screen holes in each sub-screen cylinder 13 increases sequentially along the direction from the feed inlet 11 to the discharge outlet 12. In this embodiment, during sludge screening, ditch sludge enters the screen cylinder 1 from the feed inlet 11. As the screen cylinder 1 rotates, during the sludge transport from the feed inlet 11 to the discharge outlet 12, sludge of different particle sizes is screened out from the sub-screen cylinders 13 with different aperture sizes. Unscreened sludge is discharged from the discharge outlet 12. The mud screening and conveying device of this embodiment has a simple structure by setting multiple sub-screen cylinders 13 with different screen hole diameters. It can classify and screen mud of different particle sizes, which is conducive to the classification and utilization of mud of different particle sizes (for example, mud with a particle size between 20-200mm can be used as building materials; mud with a particle size less than 20mm can be used as ceramic raw materials or soil conditioners). It can meet the different application needs of mud of different particle sizes and has strong applicability.

[0036] Preferably, in the embodiment, each sub-sieve cylinder 13 is connected by buckling, convenient to disassemble and assemble.

[0037] Further, in the embodiment, the inner periphery of the sieve cylinder 1 is provided with a plurality of material blocking assemblies 14 arranged axially and spaced apart, and each material blocking assembly 14 comprises a plurality of baffle plates 141 arranged circumferentially and spaced apart. A plurality of material blocking assemblies 14 are arranged along the axial direction of the sieve cylinder 1, and each material blocking assembly 14 comprises a plurality of baffle plates 141 arranged circumferentially and spaced apart along the sieve cylinder 1. When the sludge is transported in the sieve cylinder 1, the baffle plates 141 can block the sludge, prolong the residence time of the sludge in the sieve cylinder 1, and facilitate the full separation of the sludge, thereby achieving good screening effect.

[0038] Further, in the embodiment, the baffle plates 141 of each material blocking assembly 14 are arranged staggered. The baffle plates 141 of adjacent material blocking assemblies 14 are staggered with each other, so that the sludge can collide fully in the sieve cylinder 1, further prolonging the residence time and achieving better screening effect.

[0039] Further, in the embodiment, a gap 142 is formed between adjacent two baffle plates 141, and the baffle plates 141 of the material blocking assembly 14 overlap with the gaps 142 of the adjacent material blocking assembly 14 in axial projection. Since the baffle plates 141 of the material blocking assembly 14 overlap with the gaps 142 of the adjacent material blocking assembly 14 in axial projection, when the sludge is transported in the sieve cylinder 1, the sludge just passes through the gap 142 of one material blocking assembly 14 and is blocked by the baffle plate 141 of the next material blocking assembly 14, further prolonging the residence time and achieving better screening effect.

[0040] Further, in the embodiment, a plurality of screening hoppers 3 are arranged below the sieve cylinder 1, and each screening hopper 3 corresponds to each sub-sieve cylinder 13. The plurality of screening hoppers 3 can collect the sludge of different particle sizes screened by the sieve cylinder 1, facilitating the subsequent use of the sludge of different particle sizes.

[0041] Further, in the embodiment, the sieve cylinder 1 is fixedly provided with a washing pipe 7 on each side, and a plurality of cleaning brushes 8 are arranged on the washing pipe 7 at intervals. The two washing pipes 7 are symmetrically arranged on the two sides of the sieve cylinder 1, and the washing pipe 7 can wash the adhered sludge on the sieve cylinder 1, and then the cleaning brushes 8 can be used for brushing. Since the sieve cylinder 1 rotates, the fixedly arranged washing pipe 7 and cleaning brushes 8 can continuously brush the different parts of the sieve cylinder 1, the washing rate of the sludge is high, the cleaning efficiency is high, the conveying pressure of the sludge in the sieve cylinder 1 can be reduced, and the cleaning frequency of the sieve cylinder 1 can be reduced.

[0042] Further, in the embodiment, the sieve cylinder 1 is provided with a brake 4 at one end, the rotating end of the brake 4 is connected with a driving mechanism 5 (such as a motor), the fixed end is connected with the rack 2 through a fixed shaft 15, the fixed shaft 15 penetrates the sieve cylinder 1 and is rotationally connected with the sieve cylinder 1. The sieve cylinder 1 is driven to rotate by the driving mechanism 5 to perform screening, and is braked by the brake 4 to stop screening, which is simple and reliable in structure.

[0043] Further, in the embodiment, the first sub-sieve cylinder 13 close to the feeding port 11 is provided with a stirring rod 161 connected with the fixed shaft 15. After the sludge enters the sieve cylinder 1 from the feeding port 11, it is easy to accumulate in the sub-sieve cylinder 13 close to the feeding port 11 due to the initial screening, thereby reducing the screening efficiency and possibly leading to the un-screened sludge entering the next sub-sieve cylinder 13, reducing the screening effect. By providing the first sub-sieve cylinder 13 close to the feeding port 11 with the stirring rod 161 connected with the fixed shaft 15, the stirring rod 161 is stationary and the sieve cylinder 1 rotates during the screening of the sludge, the stirring rod 161 and the sieve cylinder 1 produce relative motion, the stirring rod 161 stirs the sludge in the sieve cylinder 1, improves the screening efficiency, makes the screening more complete, and improves the screening effect. Of course, in other embodiments, a plurality of stirring rods 161 can be provided in the sub-sieve cylinder 13 or in the plurality of sub-sieve cylinders 13 according to the accumulation of the sludge to prevent the accumulation of the sludge.

[0044] Preferably, in the embodiment, the stirring rod 161 is arranged between the two adjacent material blocking assemblies 14, and the stirring effect is better.

[0045] Preferably, in the embodiment, the inner diameters of the sub-sieve cylinders 13 gradually increase in the direction from the feeding port 11 to the discharging port 12, and the gradual expansion rate of the inner diameters of the sub-sieve cylinders 13 is 5-30%, that is, the inner diameter of the first sub-sieve cylinder 13 close to the feeding port 11 is the smallest, which can reduce the length of the stirring rod 161, reduce the wear of the stirring rod 161, and make it more durable; and the gradual increase of the inner diameters of the sub-sieve cylinders 13 requires less material and has a lighter weight compared with the same size device.

[0046] Further, in the embodiment, the frame 2 is provided with a height adjusting seat 6, and the end of the fixed shaft 15 away from the brake 4 is arranged on the height adjusting seat 6. By adjusting the height of the fixed shaft 15 through the height adjusting seat 6, the inclination angle of the sieve cylinder 1 can be adjusted, thereby controlling the residence time of the sludge in the sieve cylinder 1, and the controllability is good. In the embodiment, the inclination angle of the sieve cylinder 1 can be adjusted between 0-10°.

[0047] Further, in the embodiment, the rotating end of the brake 4 is provided with a rotating shaft 16, and the rotating shaft 16 is connected with the output shaft of the driving mechanism 5 through a universal joint 17. When the height of the end of the fixed shaft 15 is adjusted by the height adjusting seat 6, the inclination angle of the sieve cylinder 1 changes, so that the rotating shaft 16 may be deviated from the axis of the output shaft of the driving mechanism 5. By providing the universal joint 17, the inclination angle change of the sieve cylinder 1 can be adapted, and the structure is simple, reliable and has strong adaptability.

[0048] Preferably, in the embodiment, the feeding port 11 is connected with a feeding hopper 18, and the feeding hopper 18 is located above the driving mechanism 5, and the layout is compact.

[0049] Preferably, in the embodiment, a vibrating pump is further arranged on the rack 2, and the screening efficiency is higher.

[0050] The above merely describes preferred embodiments of the present application, and is not intended to limit the present application in any form. Although the present application has been disclosed with reference to the preferred embodiments, it is not intended to limit the present application. Any person skilled in the art, without departing from the spirit and technical scheme of the present application, can make many possible changes and modifications to the technical scheme of the present application, or modify it into equivalent embodiments. Therefore, any simple modification, equivalent replacement, equivalent change and modification made to the above embodiments according to the technical essence of the present application, without departing from the technical scheme of the present application, still belongs to the protection scope of the technical scheme of the present application.

Claims

1. A slurry screening and conveying device comprising a frame (2) and a screening drum (1) rotatably arranged on the frame (2), one end of the screening drum (1) being provided with a feed inlet (11) and the other end being provided with a discharge outlet (12), the height of the feed inlet (11) being higher than the height of the discharge outlet (12), characterized in that: The screen cylinder (1) comprises a plurality of sequentially butted sub-screen cylinders (13), and the screen hole diameters of each of the sub-screen cylinders (13) sequentially increase in the direction from the feed inlet (11) to the discharge outlet (12).

2. A slurry screening conveyor according to claim 1, characterized in that: The inner periphery of the screen cylinder (1) is provided with a plurality of material blocking assemblies (14) arranged in the axial direction, and the material blocking assembly (14) comprises a plurality of baffles (141) arranged in the circumferential direction.

3. A slurry screening conveyor according to claim 2, wherein: The baffles (141) of each of the material blocking assemblies (14) are staggered.

4. A slurry screening conveyor according to claim 3, wherein: A gap (142) is formed between two adjacent baffles (141), and the baffle (141) of the material blocking assembly (14) overlaps the gap (142) of the adjacent material blocking assembly (14) in the axial projection.

5. The slurry screening conveyor of claim 1, wherein: The lower portion of the screen cylinder (1) is provided with a plurality of screening hoppers (3), and each of the screening hoppers (3) corresponds to each of the sub-screen cylinders (13).

6. The slurry screening conveyor of claim 1, wherein: Both sides of the screen cylinder (1) are fixedly provided with a plurality of flushing pipes (7), and a plurality of cleaning brushes (8) are arranged on the flushing pipes (7) in the interval.

7. A slurry screening conveyor according to any one of claims 1 to 6, characterized in that: One end of the screen cylinder (1) is provided with a brake (4), the rotating end of the brake (4) is connected with a driving mechanism (5), the fixed end is connected with a rack (2) through a fixed shaft (15), the fixed shaft (15) penetrates the screen cylinder (1) and is rotatably connected with the screen cylinder (1).

8. A slurry screening conveyor according to claim 7, characterized in that: At least one of the sub-screen cylinders (13) near the feed inlet (11) is provided with a stirring rod (161), and the stirring rod (161) is connected with the fixed shaft (15).

9. The slurry screening conveyor of claim 7, wherein: The rack (2) is provided with a height adjusting seat (6), and the end of the fixed shaft (15) away from the brake (4) is arranged on the height adjusting seat (6).

10. The slurry screening conveyor of claim 8, wherein: The rotating end of the brake (4) is provided with a rotating shaft (16), and the rotating shaft (16) is connected with the output shaft of the driving mechanism (5) through a universal joint (17).

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