CN213623798U - Belt type filter pressing equipment for sludge dewatering - Google Patents
Belt type filter pressing equipment for sludge dewatering Download PDFInfo
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- CN213623798U CN213623798U CN202022684285.9U CN202022684285U CN213623798U CN 213623798 U CN213623798 U CN 213623798U CN 202022684285 U CN202022684285 U CN 202022684285U CN 213623798 U CN213623798 U CN 213623798U
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Abstract
A belt type filter pressing device for sludge dewatering relates to a sludge dewatering machine. The problem of in the current belt sludge dewaterer adopt more to be less than five squeeze rolls, because pressure is not enough, lead to the dehydration incomplete is solved. A belt type filter pressing device for sludge dehydration is characterized in that an upper filter belt and a lower filter belt in a squeezing roller dehydration area sequentially bypass a first squeezing roller, a second squeezing roller and a third squeezing roller; the first squeezing roller and the third squeezing roller are both positioned at the upper end of the upper filter belt, and the second squeezing roller is positioned at the lower end of the lower filter belt; the outer surfaces of the first extrusion roll, the second extrusion roll and the third extrusion roll are provided with a plurality of arc-shaped pieces along the circumferential direction, one ends of the arc-shaped pieces are hinged with the outer surfaces of the extrusion rolls, and elastic pieces are arranged between the arc-shaped pieces and the outer surfaces of the extrusion rolls.
Description
Technical Field
The utility model relates to a sludge dewatering machine.
Background
The belt sludge dewatering equipment is an ideal sludge dewatering equipment, and has the characteristics of simple structure, convenient operation and the like, the general process is that after concentrated sludge and a flocculating agent with certain concentration are fully mixed in a static mixer and a dynamic mixer, tiny solid particles in the sludge are aggregated into flocculent lumps with larger volume, free water is separated out at the same time, the flocculated sludge is conveyed to a filter belt for concentration and gravity dewatering in the belt sludge dewatering equipment, the free water is separated under the action of gravity to form sludge in a non-flowing state, the fluidity of the sludge after gravity dewatering is almost completely lost, then the sludge is clamped between an upper mesh belt and a lower mesh belt to enter a wedge-shaped dewatering area, the distance between the upper filter belt and the lower filter belt of the wedge-shaped dewatering area is gradually reduced, materials begin to be slightly pressurized, the pressure is gradually increased along with the operation of the filter belt, and the action of the wedge-shaped area, increasing the extrusion stability of the flock in preparation for entering the pressure zone. The material breaks away from the wedge-shaped zone and gets into squeeze roll dewatering space, and the material is extruded in this district, and along the filter belt traffic direction pressure along with the reduction of squeeze roll diameter and increase, the material receives the extrusion volume shrink, and the clearance free water in the material is extruded, at this moment, forms the filter cake basically. The sludge is gradually extruded under the action of small-to-large extrusion force and shearing force in the wedge-shaped dewatering area and the extrusion roller dewatering area so as to achieve the maximum separation of sludge and water and finally form filter cakes to be discharged.
However, the existing belt type sludge dewatering machine mostly adopts less than five extrusion rollers, and the problem of incomplete dewatering is caused because of insufficient pressure.
SUMMERY OF THE UTILITY MODEL
The utility model discloses solve and to adopt more among the current belt sludge dewaterer and be less than five squeeze rolls, because pressure is not enough, lead to the incomplete problem of dehydration, and provide a belt filter pressing equipment for sludge dewatering.
A belt type filter pressing device for sludge dewatering comprises an upper filter belt, a lower filter belt, a material distributing hopper, a gravity dewatering section, a wedge-shaped dewatering area and a squeeze roll dewatering area, wherein the upper filter belt and the lower filter belt in the squeeze roll dewatering area sequentially bypass a first squeeze roll, a second squeeze roll and a third squeeze roll; the first squeezing roller and the third squeezing roller are both positioned at the upper end of the upper filter belt, and the second squeezing roller is positioned at the lower end of the lower filter belt;
a plurality of arc-shaped pieces are uniformly distributed on the outer surfaces of the first extrusion roller, the second extrusion roller and the third extrusion roller along the circumferential direction, one ends of the arc-shaped pieces are hinged with the outer surface of the extrusion roller, an elastic sheet is arranged between the arc-shaped pieces and the outer surface of the extrusion roller, and the free ends of the arc-shaped pieces are back to the rotating direction of the extrusion roller; the length of the arc-shaped part and the length of the elastic sheet are the same as the axial length of the extrusion roller.
The utility model discloses a theory of operation:
because the elastic sheet is arranged between the arc-shaped piece and the outer surface of the extrusion roller, when the filter belt is not contacted with the arc-shaped piece of the extrusion roller, the elastic sheet supports the arc-shaped piece to form the maximum angle with the outer surface of the extrusion roller. Because the direction of rotation of the free end dorsad squeeze roll of arc (follow the arc open end promptly and the direction of rotation of squeeze roll is the same with the arc hinged end), consequently, when the filter belt along with the motion with the arc on the squeeze roll contact, the hinged end of arc and filter belt contact at first, along with rotatory, the filter belt extrudees the arc gradually, and make the flexure strip warp, the reaction force is applyed to the flexure strip for the filter belt this moment, and then increased the pressure of squeeze roll to mud, make the dehydration effect more complete.
The utility model has the advantages that:
the utility model discloses among sludge dewatering's belt filter-pressing equipment dehydration, filter belt extrusion arc to make the flexure strip warp, the reaction force is applyed for the filter belt to the flexure strip, has increased the pressure of squeeze roll to mud, makes dehydration effect more complete, has solved and has adopted more in the current belt sludge dewaterer to be less than five squeeze rolls, because pressure is not enough, leads to the incomplete problem of dehydration.
Drawings
FIG. 1 is a schematic structural view of a belt type filter pressing device for sludge dewatering according to the present invention;
FIG. 2 is a schematic structural view of a first squeeze roll of the present invention;
fig. 3 is a schematic structural view of the second squeeze roll of the present invention.
Detailed Description
The first embodiment is as follows: the embodiment is specifically described with reference to fig. 1 to 3, and the embodiment is a belt type filter pressing device for sludge dewatering, which comprises an upper filter belt 1-1, a lower filter belt 1-2, a distribution hopper 2, a gravity dewatering section 3, a wedge-shaped dewatering area 4 and a squeeze roll dewatering area 5, wherein the upper filter belt 1-1 and the lower filter belt 1-2 in the squeeze roll dewatering area 5 sequentially bypass a first squeeze roll 6, a second squeeze roll 7 and a third squeeze roll 8; the first squeezing roller 6 and the third squeezing roller 8 are both positioned at the upper end of the upper filter belt 1-1, and the second squeezing roller 7 is positioned at the lower end of the lower filter belt 1-2;
a plurality of arc-shaped pieces 6-1 are uniformly distributed on the outer surfaces of the first extrusion roller 6, the second extrusion roller 7 and the third extrusion roller 8 along the circumferential direction, one end of each arc-shaped piece 6-1 is hinged with the outer surface of each extrusion roller, an elastic sheet 6-2 is arranged between each arc-shaped piece 6-1 and the outer surface of each extrusion roller, and the free end of each arc-shaped piece 6-1 is back to the rotation direction of each extrusion roller; the length of the arc-shaped part 6-1 and the length of the elastic sheet 6-2 are the same as the axial length of the extrusion roll.
The free end of the first press roll 6 is in the same orientation as the third press roll 8 and opposite to the second press roll 7 in this embodiment.
The beneficial effects of the embodiment are as follows:
in the dehydration process of the belt type filter pressing equipment for sludge dehydration in the specific embodiment, the filter belt extrudes the arc-shaped piece 6-1, the elastic sheet 6-2 is deformed, the elastic sheet 6-2 applies a reaction force to the filter belt, the pressure of the squeeze rollers to sludge is increased, the dehydration effect is more complete, and the problem of incomplete dehydration caused by insufficient pressure due to the fact that less than five squeeze rollers are adopted in the conventional belt type sludge dehydrator is solved.
The second embodiment is as follows: the present embodiment differs from the first embodiment in that: the outer surfaces of the first extrusion roller 6, the second extrusion roller 7 and the third extrusion roller 8 are uniformly provided with 6-10 arc-shaped pieces 6-1 along the circumferential direction. The rest is the same as the first embodiment.
The third concrete implementation mode: the present embodiment is different from the first or second embodiment in that: the length of the upper filter belt 1-1 and the length of the lower filter belt 1-2 are both 8 m-12 m. The other is the same as in the first or second embodiment.
The fourth concrete implementation mode: the present embodiment is different from the first to third embodiments in that: the elastic sheet 6-2 is an arc elastic sheet. The others are the same as the first to third embodiments.
The fifth concrete implementation mode: the present embodiment is different from one of the first to fourth embodiments in that: the diameters of the first squeezing roller 6, the second squeezing roller 7 and the third squeezing roller 8 are reduced in sequence. The rest is the same as the first to fourth embodiments.
Claims (5)
1. A belt type filter pressing device for sludge dehydration comprises an upper filter belt (1-1), a lower filter belt (1-2), a material distributing hopper (2), a gravity dehydration section (3), a wedge-shaped dehydration area (4) and an extrusion roller dehydration area (5), and is characterized in that the upper filter belt (1-1) and the lower filter belt (1-2) in the extrusion roller dehydration area (5) jointly and sequentially bypass a first extrusion roller (6), a second extrusion roller (7) and a third extrusion roller (8); the first squeezing roller (6) and the third squeezing roller (8) are both positioned at the upper end of the upper filter belt (1-1), and the second squeezing roller (7) is positioned at the lower end of the lower filter belt (1-2);
a plurality of arc-shaped pieces (6-1) are uniformly distributed on the outer surfaces of the first extrusion roller (6), the second extrusion roller (7) and the third extrusion roller (8) along the circumferential direction, one ends of the arc-shaped pieces (6-1) are hinged with the outer surface of the extrusion roller, an elastic sheet (6-2) is arranged between the arc-shaped pieces (6-1) and the outer surface of the extrusion roller, and the free ends of the arc-shaped pieces (6-1) are back to the rotating direction of the extrusion roller; the length of the arc-shaped part (6-1) and the length of the elastic sheet (6-2) are the same as the axial length of the extrusion roll.
2. The belt type filter pressing equipment for sludge dewatering according to claim 1, characterized in that 6-10 arc-shaped pieces (6-1) are evenly distributed on the outer surface of the first squeeze roll (6), the second squeeze roll (7) and the third squeeze roll (8) along the circumferential direction.
3. The belt type filter pressing equipment for sludge dewatering according to claim 1, characterized in that the length of the upper filter belt (1-1) and the length of the lower filter belt (1-2) are both 8 m-12 m.
4. The belt filter-press apparatus for sludge dewatering according to claim 1, characterized in that the elastic sheet (6-2) is an arc-shaped elastic sheet.
5. The belt-type pressure filtration apparatus for sludge dewatering according to claim 1, characterized in that the diameters of the first squeeze roll (6), the second squeeze roll (7) and the third squeeze roll (8) are sequentially reduced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022684285.9U CN213623798U (en) | 2020-11-19 | 2020-11-19 | Belt type filter pressing equipment for sludge dewatering |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022684285.9U CN213623798U (en) | 2020-11-19 | 2020-11-19 | Belt type filter pressing equipment for sludge dewatering |
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| CN213623798U true CN213623798U (en) | 2021-07-06 |
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| CN202022684285.9U Active CN213623798U (en) | 2020-11-19 | 2020-11-19 | Belt type filter pressing equipment for sludge dewatering |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113478692A (en) * | 2021-07-20 | 2021-10-08 | 湖南安福环保科技股份有限公司 | Automatic crushed powder recovery device and recovery process |
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2020
- 2020-11-19 CN CN202022684285.9U patent/CN213623798U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113478692A (en) * | 2021-07-20 | 2021-10-08 | 湖南安福环保科技股份有限公司 | Automatic crushed powder recovery device and recovery process |
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