Sludge drying banded extruder

Abstract

The utility model discloses a sludge drying banded extruder. The sludge drying banded extruder comprises a belt type scraper and a banded extruder body, the sludge drying banded extruder is mounted on the drying machine and is positioned right above the first layer of mesh belt conveyor at the sludge inlet of the drying machine; the banded extruder body comprises a shell, a hopper, a material uniformizing device, a plurality of material extruding screws, a pore plate and a material uniformizing motor; the bottom of the shell is provided with a pore plate; the top of the shell is provided with a hopper; extrusion screws are mounted in the shell, the tops of the extrusion screws are communicated with the hopper, and the bottoms of the extrusion screws are in one-to-one correspondence with the round holes machined in the pore plate; a material uniformizing device is mounted in the hopper, and when the material uniformizing device rotates, wet sludge is uniformly distributed on the upper side of the material extruding screw; the outlet end of the belt scraper is positioned right above the hopper of the banded extruder body and is used for conveying wet sludge into the hopper of the banded extruder body; according to the utility model, not only can the strip extrusion of wet sludge with the moisture content lower than 60% be realized, but also the strip extruder can be prevented from being blocked by mixed hard substances.

Description

Technical Field

[0001] The utility model belongs to the technical field of sludge drying, and particularly relates to a sludge drying extruder. Background Art

[0002] Before drying, the sludge needs to be cut into strips to make it spread evenly, thinly and loosely to achieve the best drying state;

[0003] However, in the actual treatment process, we found that the sludge characteristics are complex. Ordinary slitting machines are difficult to use for sludge with low moisture content or sludge with hard inclusions, and will cause the following hazards:

[0004] 1. Sludge with a moisture content of less than 60% is not easy to cut into strips or become clogged;

[0005] 2. The sludge is mixed with hard materials (such as metal, ceramics, glass, etc.), which will damage the slitting machine during the slitting process.

[0006] For sludge containing hard impurities, the current methods are: adding a slag remover before the sludge enters the strip cutter, or manually cleaning the strip cutter when it gets stuck; however, these two solutions are cumbersome to operate and inefficient. Utility Model Content

[0007] In view of this, the utility model provides a sludge drying extruder, which can not only realize the extrusion of wet sludge with a moisture content lower than 60%, but also prevent the included hard materials from clogging the extruder.

[0008] The utility model is realized through the following technical solutions:

[0009] A sludge drying extruder comprises: a belt scraper and an extruder body;

[0010] The sludge drying extruder is installed on the dryer and is located just above the first layer of mesh belt conveyor at the sludge inlet of the dryer;

[0011] The extruder body includes: a shell, a hopper, a material-splitting device, a plurality of extrusion screws, a perforated plate and a material-splitting motor;

[0012] A perforated plate is installed at the bottom of the shell, and a hopper is installed at the top of the shell; an extrusion screw is installed in the shell, and a plurality of extrusion screws are arranged in parallel along the width direction of the mesh belt conveyor, and the tops of the plurality of extrusion screws are all connected to the hopper, and the bottoms of the plurality of extrusion screws are respectively opposite to the circular holes processed on the perforated plate;

[0013] A material leveling device is installed in the hopper, the length direction of the material leveling device is arranged along the width direction of the mesh belt conveyor, and the material leveling device is driven to rotate by a material leveling motor installed outside the housing; when the material leveling device rotates, it is used to evenly distribute the wet sludge on the upper side of the extrusion screw;

[0014] The outlet end of the belt scraper is located directly above the hopper of the extruding machine body, and is used to convey wet sludge into the hopper of the extruding machine body.

[0015] Furthermore, the extruding machine body further includes an anti-arching device, which is installed in the hopper.

[0016] Furthermore, the distance between two adjacent extrusion screws is 5 mm to 80 mm.

[0017] Furthermore, the extrusion screws are made of anti-corrosion and wear-resistant materials.

[0018] Furthermore, each extrusion screw is perpendicular to the mesh belt conveyor.

[0019] Advantageous effects:

[0020] (1) The present utility model adopts a drying and extrusion machine that feeds evenly, discharges materials in a spiral manner, and extrudes through a circular die (i.e., the round holes on the orifice plate). The drying and extrusion machine is installed at the mud inlet of the dryer. The belt scraper conveys wet sludge into the hopper of the extruding machine body. The wet sludge is evenly distributed above the extrusion screw through the material leveling device. The extrusion screw extrudes the wet sludge to the orifice plate through friction. After the wet sludge at the rear end applies an extrusion force, the wet sludge is extruded from the round holes of the orifice plate out of the extruding machine; during this extrusion process, since the wet sludge is in a semi-fluid state and there is internal friction between the wet sludge, even if there are hard substances mixed in the wet sludge, it will not cause the extrusion screw to interfere and stop. The hard substances will flow to the bottom side position with relatively small resistance under the force, and only need to open the orifice plate regularly to clean the impurities; therefore, the extrusion machine of the present utility model can not only extrude wet sludge with a water content lower than 60%, but also prevent the hard substances mixed in from blocking the extrusion machine.

[0021] (2) The extruding machine body of the present utility model further includes an anti-arching device, which can prevent sludge from blocking in the hopper.

[0022] (3) The distance between two adjacent extrusion screws of the present utility model is 5 mm to 80 mm, which can improve the efficiency of the extrusion screw in extruding wet sludge; the extrusion screws are made of anti-corrosion and wear-resistant materials, which can improve the service life of the extrusion screws. Description of the drawings

[0023] Figure 1 It is a structural composition diagram of the present utility model;

[0024] Figure 2 It is a specific structural diagram of the extruding machine body of the present utility model;

[0025] Among them, 1-belt scraper conveyor, 2-extrusion machine body, 3-dryer, 1-1-wet sludge, 2-1-material leveling device, 2-2-arch breaking device, 2-3-extrusion screw, 2-4-aperture plate, 2-5-hopper, 2-6-material leveling motor, 3-1-net belt conveyor. Specific embodiments

[0026] The following combines the accompanying drawings and gives embodiments to describe the present invention in detail.

[0027] This embodiment provides a sludge drying and extrusion machine. Refer to the attached Figure 1 , including: a belt scraper conveyor 1 and an extrusion machine body 2;

[0028] The sludge drying and extrusion machine is installed on the dryer 3 and is directly above the first net belt conveyor 3-1 at the mud inlet of the dryer 3;

[0029] Refer to the attached Figure 2 , the extrusion machine body 2 includes: a housing, a hopper 2-5, a material leveling device 2-1, an arch breaking device 2-2, a plurality of extrusion screws 2-3, an aperture plate 2-4 and a material leveling motor 2-6;

[0030] An aperture plate 2-4 is installed at the bottom of the housing, and a hopper 2-5 is installed at the top of the housing; an extrusion screw 2-3 is installed in the housing. Each extrusion screw 2-3 is perpendicular to the net belt conveyor 3-1, and a plurality of extrusion screws 2-3 are arranged side by side along the width direction of the net belt conveyor 3-1. The tops of a plurality of extrusion screws 2-3 communicate with the hopper 2-5, and the bottoms of a plurality of extrusion screws 2-3 are respectively opposite to the round holes processed on the aperture plate 2-4;

[0031] Among them, the distance between two adjacent extrusion screws 2-3 is 5 mm to 80 mm, that is, the distance between the maximum diameter of the spiral part of one extrusion screw 2-3 and the outer diameter of the rotating shaft part of an adjacent extrusion screw 2-3 (that is, the minimum diameter of the spiral part) is 5 mm to 80 mm, that is, the distance D in the figure; and the extrusion screw 2-3 is made of anti-corrosion and wear-resistant materials;

[0032] A material leveling device 2-1 and an arch breaking device 2-2 are installed in the hopper 2-5. The length direction of the material leveling device 2-1 is arranged along the width direction of the net belt conveyor 3-1, and the material leveling device 2-1 is driven to rotate by a material leveling motor 2-6 installed outside the housing; when the material leveling device 2-1 rotates, it is used to evenly distribute the wet sludge 1-1 on the upper side of the extrusion screw 2-3; the arch breaking device 2-2 rotates continuously to prevent the wet sludge 1-1 from blocking in the hopper 2-5;

[0033] The belt scraper 1 is installed at the feeding port of the extruding machine body 2, that is, the outlet end of the belt scraper 1 is directly above the hopper 2-5 of the extruding machine body 2, and is used to convey the wet sludge 1-1 into the hopper 2-5 of the extruding machine body 2.

[0034] The operation process of the sludge drying and extruding machine is as follows:

[0035] The wet sludge 1-1 with a water content lower than 60% or the wet sludge 1-1 mixed with hard substances is conveyed into the hopper 2-5 of the extruding machine body 2 through the scraper conveyor 1. The material leveling device 2-1 evenly distributes the wet sludge 1-1 on the upper side of the extrusion screw 2-3. Among them, the arch breaking device 2-2 rotates continuously to prevent the wet sludge 1-1 from clogging in the hopper 2-5.

[0036] The extrusion screw 2-3 extrudes the wet sludge 1-1 to the orifice plate 2-4. The wet sludge 1-1 is extruded from the round holes of the orifice plate 2-4 by the extrusion of the wet sludge 1-1 behind it, and the wet sludge 1-1 is evenly distributed on the first-layer mesh belt conveyor 3-1 in the dryer 3 for drying.

[0037] During this extrusion process, since the wet sludge 1-1 is in a semi-fluid state, the wet sludge 1-1 is subjected to internal friction force, and even if there are hard substances mixed in the wet sludge 1-1, it will not cause the extrusion screw 2-3 to interfere and stop running. The hard substances will flow to the bottom side position with relatively small resistance under the action of force, and only need to open the orifice plate 2-4 regularly to clean the impurities.

[0038] In summary, the above is only the preferred embodiment of the present invention and is not used to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A sludge drying and extrusion machine, characterized in that, Comprising: A belt scraper and an extruding machine body; The sludge drying extruding machine is installed on the dryer and is directly above the first layer of mesh belt conveyor at the sludge inlet of the dryer; The extruding machine body includes: a housing, a hopper, a material leveling device, a plurality of extrusion screws, an orifice plate and a material leveling motor; The orifice plate is installed at the bottom of the housing, and the hopper is installed at the top of the housing; extrusion screws are installed inside the housing, and a plurality of extrusion screws are arranged side by side along the width direction of the mesh belt conveyor, and the tops of the plurality of extrusion screws communicate with the hopper, and the bottoms of the plurality of extrusion screws are respectively opposite to the round holes machined on the orifice plate one by one; The hopper is internally provided with a material leveling device, the length direction of the material leveling device is arranged along the width direction of the mesh belt conveyor, and the material leveling device is driven to rotate by a material leveling motor installed outside the housing; when the material leveling device rotates, it is used to evenly distribute the wet sludge on the upper side of the extrusion screw; The outlet end of the belt scraper is directly above the hopper of the extruding machine body and is used to convey wet sludge into the hopper of the extruding machine body.

2. The sludge drying and extrusion machine according to claim 1, characterized in that, The extruding machine body further includes an anti-arching device, and the anti-arching device is installed in the hopper.

3. The sludge drying and extrusion machine according to claim 1 or 2, characterized in that, The distance between two adjacent extrusion screws is 5 mm to 80 mm.

4. A sludge drying and extrusion machine according to claim 1 or 2, characterized in that, The extrusion screw is made of anti-corrosion and wear-resistant materials.

5. A sludge drying and extrusion machine as claimed in claim 1 or 2, characterized in that Each extrusion screw is perpendicular to the mesh belt conveyor.

Images