CN111617526A - Rotary drum type solid-liquid separator - Google Patents
Rotary drum type solid-liquid separator Download PDFInfo
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- CN111617526A CN111617526A CN202010333205.7A CN202010333205A CN111617526A CN 111617526 A CN111617526 A CN 111617526A CN 202010333205 A CN202010333205 A CN 202010333205A CN 111617526 A CN111617526 A CN 111617526A
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- drum
- rotary
- rotary drum
- type solid
- liquid separator
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D25/00—Filters formed by clamping together several filtering elements or parts of such elements
- B01D25/12—Filter presses, i.e. of the plate or plate and frame type
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- Chemical Kinetics & Catalysis (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses a drum-type solid-liquid separator, which comprises a frame, a rotary drum group, a feeding mechanism, a discharging mechanism and a driving mechanism, wherein the rotary drum group comprises at least two rotary drums which have different diameters and are sequentially sleeved from inside to outside, at least one of the two adjacent rotary drums is used for filtering liquid, a plurality of rotary drums can be respectively rotated, the two adjacent rotary drums rotate around different circle centers and form a gradually contracted ox-horn-shaped channel so as to form a liquid removal interval with gradually increased pressure intensity, at least one of the rotary drums is fixed on the frame, at least one feeding mechanism and one discharging mechanism are arranged in each ox-horn-shaped channel, the number of the discharging mechanism and the number of the driving mechanisms in the whole drum-type solid-liquid separator are at least one, the rotary directions of the rotary drums are consistent, and forced pressure filtration and variable volume filtration can be simultaneously carried out, and the solid content of the filter cake can be conveniently adjusted.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of solid-liquid separators, in particular to the technical field of a rotary drum type solid-liquid separator.
[ background of the invention ]
A drum type dehydrator is a filtering device widely used in the field of solid-liquid separation, and comprises a drum filter, a vacuum drum filter, a centrifugal drum filter and the like. The rotary drum filter has the advantages of compact equipment, good operating environment, no need of manual intervention and the like, but the problems of small filtering pressure and high water content of filter cakes of the dehydration filtering equipment generally exist at the same time.
In order to increase the dewatering pressure of the drum, an involute drum eccentric extrusion filter press is disclosed in the Chinese patent application No. 201710341223.8. The involute type drum eccentric extrusion filter press can perform pressurization feeding, vacuum suction and mechanical extrusion on slurry, the moisture content of discharged filter cakes is low, the filter cakes can be conveniently subjected to back blowing and self-discharging, and the work efficiency is improved. However, in the invention, only the rotary drum rotates, and the lower shell is fixed, so that the adhesion force of the filter cake on the surface of the static lower shell is improved along with the gradual increase of the concentration of the filter cake, so that the resistance of the filter cake to advance is gradually increased, and finally, a large amount of power is used for overcoming the advancing resistance instead of pressing, the pressing effect is influenced, and the energy consumption is high. In addition, another drawback of the invention is the presence of only one dewatering drum, which has a small filtering area and limits the processing capacity.
In order to increase the filtering area of the rotary drum, a double-drum rotary drum filter is disclosed in chinese patent application No. 201910516619.0. The patent has the advantage of improving the single-layer metal net covered on the rotary drum into a double-layer metal net with different meshes so as to increase the filtering area. However, since the filter screen of the present invention is fixed to the same rotating member, it is impossible to perform forced dehydration with a variable volume, and therefore, this apparatus can be applied only under conditions of high water content in concentration filtration, and cannot satisfy the requirement of high-pressure deep dehydration.
[ summary of the invention ]
The invention aims to solve the problems in the prior art and provides a drum type solid-liquid separator which can simultaneously carry out forced pressure filtration and variable volume filtration and can conveniently adjust the solid content of a filter cake.
In order to achieve the purpose, the invention provides a rotary drum type solid-liquid separator which comprises a rack, a rotary drum set, a feeding mechanism, a discharging mechanism and a driving mechanism, wherein the rotary drum set comprises at least two rotary drums which are different in diameter and are sequentially sleeved from inside to outside, at least one of the two adjacent rotary drums is used for filtering liquid, the rotary drums can rotate respectively, the two adjacent rotary drums rotate around different circle centers and form a gradually contracted ox-horn-shaped channel so as to form a liquid removal interval with gradually increased pressure, at least one of the rotary drums is fixed on the rack, at least one feeding mechanism and one discharging mechanism are arranged in each ox-horn-shaped channel, the number of the discharging mechanism and the number of the driving mechanisms in the whole rotary drum type solid-liquid separator are at least one, and the rotating directions of the rotary drums are consistent.
Preferably, the drum for filtering liquid is provided with a plurality of through holes, a liquid permeable liner is laid on the drum surface, the liquid permeable liner is covered with a filter medium, and the liquid permeable liner and the filter medium are fixed on the drum through hoops.
Preferably, the drum has an opening ratio of the through holes of 0.5 to 25%, and further, an opening ratio of 20 to 25%.
Preferably, the liquid permeable liner is a grating with a gap width of 0.1-10 mm or a metal or nonmetal net with a mesh number of 4-40 meshes, further, the grating gap width is 2-5 mm, the metal or nonmetal net with a mesh number of 8-16 meshes, the filter medium is a metal or nonmetal liquid permeable filter material, the filter medium is a polyester woven net, a non-woven fabric, a felt, a filter cloth, a metal wire mesh, a metal pore plate or a metal slit sieve plate, further, the filter cloth is selected for municipal sludge, the metal sieve plate is selected for papermaking sludge, and the polyester woven net is selected for building sludge.
Preferably, the feeding mechanism is a pump or a screw conveyor, and the feeding mechanism uniformly conveys the materials to be separated along the axial direction of the rotary drum.
Preferably, the feeding mechanism conveys the materials to be separated to the middle of the liquid removing interval.
Preferably, the discharging mechanism is a contact scraper or a non-contact airflow scraper for stripping the filter cake from the rotary drum, and further, the contact scraper is selected for inorganic mineral sludge, and the non-contact airflow scraper is selected for viscous materials such as municipal sludge.
Preferably, the discharging mechanism is a spiral output machine or a belt conveyor for filtering the filter cake discharged by the discharging mechanism out of the rotary drum group.
Preferably, the discharging mechanism is a spiral output machine or a belt conveyor which conveys from the center of the rotary drum to two ends.
Preferably, the driving mechanism comprises a shaft driving unit and a roller driving unit, the innermost rotating drum is driven to rotate by the shaft driving unit or the roller driving unit when driven to rotate, the other rotating drums are driven to rotate by the roller driving unit when driven to rotate, the shaft driving unit comprises a central shaft, a shaft speed reducer and a shaft motor, the shaft motor drives the central shaft to rotate through the shaft speed reducer, the roller driving unit comprises a roller speed reducer, a roller motor and a plurality of carrier rollers, and the roller motor drives one of the carrier rollers to rotate through the roller speed reducer. Further, the drum located at the innermost side is driven to rotate by the shaft driving unit when driven to rotate.
The invention has the beneficial effects that: the invention forms a rotary drum group by overlapping a plurality of rotary drums, and enables adjacent rotary drums in the rotary drum group to rotate around different circle centers in the same direction of rotation, and separates into a horn-shaped channel between the adjacent rotary drums by utilizing the eccentricity of the center of rotation, so that a dehydrated material is clamped by two surfaces of the adjacent rotary drums and moves forward along the channel, thereby gradually narrowing the channel to form volume deformation squeezing, and achieving the purpose of drying the material.
The features and advantages of the present invention will be described in detail by embodiments in conjunction with the accompanying drawings.
[ description of the drawings ]
FIG. 1 is a front view of a drum type solid-liquid separator of the present invention with a discharge mechanism omitted;
FIG. 2 is a sectional view taken along line A-A of FIG. 1
FIG. 3 is a schematic structural diagram according to the first embodiment;
FIG. 4 is a left side view of the drum according to the first embodiment;
FIG. 5 is a schematic structural view of the second embodiment;
FIG. 6 is a schematic connection diagram of the drum set, the feeding mechanism and the discharging mechanism of the second embodiment.
In the figure: 1-frame, 2-drum group, 3-feeding mechanism, 4-discharging mechanism, 5-discharging mechanism, 6-driving mechanism, 61-central shaft and 62-carrier roller.
[ detailed description ] embodiments
The first embodiment is used for sludge dewatering at a piling site:
referring to fig. 3 and 4, the invention relates to a rotary drum type solid-liquid separator, which comprises a frame 1, a rotary drum set 2, a feeding mechanism 3, a discharging mechanism 4, a discharging mechanism 5 and a driving mechanism 6, wherein the rotary drum set 2 comprises an inner rotary drum 22 and an outer rotary drum 21 which have different diameters and are sequentially sleeved from inside to outside, the inner rotary drum 22 and the outer rotary drum 21 both filter liquid, the inner rotary drum 22 and the outer rotary drum 21 are respectively and rotatably fixed on the frame 1 and rotate around different circle centers to form a gradually contracted ox horn-shaped channel so as to form a liquid removal interval with gradually increased pressure, and the feeding mechanism 3, the discharging mechanism 4 and the discharging mechanism 5 are arranged in the ox-horn-shaped channel.
The outer rotating drum 21 is made of a 25 MM-thick A3 steel plate with the diameter of 2.5M and is provided with a plurality of through holes with the diameter of D10 and the opening rate of 25 percent. The inner rotary drum 22 is made of a 25 MM-thick A3 steel plate with the diameter of 2M and is provided with a plurality of through holes with the diameter of D10 and the aperture ratio of 25 percent. 8-mesh stainless steel lining nets are paved on the outer rotary drum 21 and the inner rotary drum 22, and polyester woven nets are wrapped outside the stainless steel lining nets.
The feeding mechanism 3 is a pump which uniformly conveys the materials to be separated in the middle of the dewatering area along the axial direction of the rotary drum through a mud inlet pipe with the wall thickness of D125 being 5MM so as to ensure that the filter cake is uniform along the axial direction.
The discharging mechanism 4 is a non-contact airflow scraper for stripping the filter cake from the filter medium on the surface of the rotary drum.
The discharging mechanism 5 is a D150 bidirectional spiral output machine which is conveyed from the center of the rotary drum to two ends, so that the transverse pressing force of the rotary drum is ensured to be consistent.
The driving mechanism 6 comprises a shaft driving unit and a roller driving unit, the shaft driving unit comprises a central shaft 61, a shaft speed reducer and a shaft motor, the shaft motor drives the central shaft 61 to rotate through the shaft speed reducer, the central shaft 61 is connected with the inner rotary drum 22, the roller driving unit comprises a roller speed reducer, a roller motor and a plurality of carrier rollers 62, the carrier rollers 62 are evenly arranged at the outer edge of the outer rotary drum 21, and the roller motor drives one of the carrier rollers 62 to rotate through the roller speed reducer. Idler 62 is a D350 roller.
During operation, the material is transferred to the middle of the ox horn shaped passage nip between the inner and outer drums 22, 21, the inner and outer drums 22, 21 rotating in the same direction of rotation, thereby gradually clamping the material into the ox horn shaped press zone. The liquid flows out through the filtering medium fixed on the rotary drum under the action of the extrusion force of the rotary drum, and the materials are discharged through the airflow scraper after being squeezed and dehydrated and then fall into the discharge screw conveyor for output. The water content of the sludge feed is 82 percent, and the water content of the discharged material after squeezing and dewatering is 33 percent.
Example two, use for river sludge dewatering:
referring to fig. 5 and 6, the invention relates to a rotary drum type solid-liquid separator, which comprises a frame 1, a rotary drum set 2, a feeding mechanism 3, a discharging mechanism 4, a discharging mechanism 5 and a driving mechanism 6, wherein the rotary drum set 2 comprises an inner rotary drum 22, a rotary drum 23 and an outer rotary drum 21 which are different in diameter and are sequentially sleeved from inside to outside, the inner rotary drum 22 and the outer rotary drum 21 are used for filtering liquid, the middle rotary drum 23 is not used for filtering liquid, the inner rotary drum 22, the rotary drum 23 and the outer rotary drum 21 are respectively rotatably fixed on the frame 1 and rotate around different circle centers, adjacent rotary drums form a gradually contracted ox horn-shaped channel so as to form a liquid removal interval with gradually increased pressure, and a plurality of feeding mechanisms 3, discharging mechanisms 4 and discharging mechanisms 5 are arranged in each ox horn-shaped channel.
The outer rotating drum 21 is made of a 25 MM-thick A3 steel plate with the diameter of 2.5M and is provided with a plurality of through holes with the diameter of D8 and the aperture ratio of 20%. The diameter of the transfer drum is 2M, no hole is formed, the function of the transfer drum is to strengthen the structural strength of the equipment, and high-strength pressing force support is provided for the compression dehydration of the inner transfer drum 22 and the outer transfer drum 21. The inner rotary drum 22 is made of a 25 MM-thick A3 steel plate with the diameter of 1.5M and is provided with a plurality of through holes with the diameter of D8 and the aperture ratio of 20 percent. 8-mesh stainless steel lining nets are paved on the outer rotary drum 21 and the inner rotary drum 22, and polyester woven nets are wrapped outside the stainless steel lining nets.
The feeding mechanism 3 is a pump which uniformly conveys the materials to be separated in the middle of the dewatering area along the axial direction of the rotary drum through a mud inlet pipe with the wall thickness of D125 being 5MM so as to ensure that the filter cake is uniform along the axial direction.
The discharging mechanism 4 is a non-contact airflow scraper for stripping the filter cake from the filter medium on the surface of the rotary drum.
The discharging mechanism 5 is a D150 bidirectional spiral output machine which is conveyed from the center of the rotary drum to two ends, so that the transverse pressing force of the rotary drum is ensured to be consistent.
The driving mechanism 6 comprises a shaft driving unit and a roller driving unit, the shaft driving unit comprises a central shaft 61, a shaft speed reducer and a shaft motor, the shaft motor drives the central shaft 61 to rotate through the shaft speed reducer, the central shaft 61 is connected with the inner rotating drum 22, the roller driving unit comprises a roller speed reducer, a roller motor and a plurality of carrier rollers 62, the plurality of carrier rollers 62 are uniformly arranged at the outer edges of the rotating drum 23 and the outer rotating drum 21, and the roller motor drives one of the carrier rollers 62 positioned at the outer edge of the outer rotating drum 21 to rotate through the roller speed reducer. Idler 62 is a D350 roller. The intermediate drum 23 is rotated by the friction of the filter cake.
During operation, the material is transferred to the middle of the ox horn shaped passage nip between the inner drum 22 and the middle drum 23 and between the middle drum 23 and the outer drum 21, and the inner drum 22, the middle drum 23 and the outer drum 21 rotate in the same direction of rotation, thereby gradually clamping the material into the ox horn shaped press zone. The liquid flows out through the filtering medium fixed on the rotary drum under the action of the extrusion force of the rotary drum, and the materials are discharged through the airflow scraper after being squeezed and dehydrated and then fall into the discharge screw conveyor for output. The water content of the sludge feed is 90 percent, and the water content of the discharged material after squeezing and dewatering is 55 percent.
The invention forms a rotary drum group by overlapping a plurality of rotary drums, and enables adjacent rotary drums in the rotary drum group to rotate around different circle centers in the same direction of rotation, and separates into a horn-shaped channel between the adjacent rotary drums by utilizing the eccentricity of the center of rotation, so that a dehydrated material is clamped by two surfaces of the adjacent rotary drums and moves forward along the channel, thereby gradually narrowing the channel to form volume deformation squeezing, and achieving the purpose of drying the material.
The above embodiments are illustrative of the present invention, and are not intended to limit the present invention, and any simple modifications of the present invention are within the scope of the present invention.
Claims (10)
1. A rotary drum type solid-liquid separator is characterized in that: the rotary drum type solid-liquid separator comprises a rack (1), a rotary drum group (2), a feeding mechanism (3), a discharging mechanism (4), a discharging mechanism (5) and a driving mechanism (6), wherein the rotary drum group (2) comprises at least two rotary drums which are different in diameter and are sequentially sleeved from inside to outside, at least one of the two adjacent rotary drums is used for filtering liquid, the rotary drums can rotate respectively, the two adjacent rotary drums rotate around different circle centers and form a gradually contracted ox-horn-shaped channel so as to form a liquid removal interval with gradually increased pressure, at least one of the rotary drums is fixed on the rack (1), at least one feeding mechanism (3) and one discharging mechanism (4) are arranged in each ox-horn-shaped channel, and the number of the discharging mechanism (5) and the number of the driving mechanism (6) in the whole rotary drum type solid-liquid separator is at least one, the rotating directions of the rotary drums are consistent.
2. A drum type solid-liquid separator as set forth in claim 1, wherein: the drum for filtering liquid is provided with a plurality of through holes, a liquid permeable liner is paved on the drum surface, a filter medium covers the liquid permeable liner, and the liquid permeable liner and the filter medium are fixed on the drum through hoops.
3. A drum type solid-liquid separator as set forth in claim 2, wherein: the aperture ratio of the through holes on the rotary drum is 0.5-25%.
4. A drum type solid-liquid separator as set forth in claim 2, wherein: the liquid permeable liner is a grid with the gap width of 0.1-10 mm or a metal or nonmetal net with the mesh number of 4-40 meshes, the filter medium is a metal or nonmetal liquid permeable filter material, and the filter medium is a polyester woven mesh, a non-woven fabric, a felt, a filter cloth, a metal wire mesh, a metal pore plate or a metal seam sieve plate.
5. A drum type solid-liquid separator as set forth in claim 1, wherein: the feeding mechanism (3) is a pump or a screw conveyor, and the material to be separated is uniformly conveyed by the feeding mechanism (3) along the axial direction of the rotary drum.
6. A drum type solid-liquid separator as set forth in claim 5, wherein: the feeding mechanism (3) conveys the materials to be separated to the middle of the liquid removing interval.
7. A drum type solid-liquid separator as set forth in claim 1, wherein: the discharging mechanism (4) is a contact type scraper or a non-contact type airflow scraper for stripping the filter cake from the rotary drum.
8. A drum type solid-liquid separator as set forth in claim 1, wherein: the discharging mechanism (5) is a spiral output machine or a belt conveyor which filters the filter cakes discharged by the discharging mechanism (4) out of the rotary drum group (2).
9. A drum type solid-liquid separator as set forth in claim 8, wherein: the discharging mechanism (5) is a spiral output machine or a belt conveyor which is conveyed from the center of the rotary drum to two ends.
10. A drum type solid-liquid separator as set forth in claim 1, wherein: the driving mechanism (6) comprises a shaft driving unit and a roller driving unit, the rotary drum positioned at the innermost side is driven to rotate by the shaft driving unit or the roller driving unit, the other rotary drums are driven to rotate by the roller driving unit, the shaft driving unit comprises a central shaft (61), a shaft speed reducer and a shaft motor, the shaft motor drives the central shaft (61) to rotate through the shaft speed reducer, the roller driving unit comprises a roller speed reducer, a roller motor and a plurality of carrier rollers (62), and the roller motor drives one of the carrier rollers (62) to rotate through the roller speed reducer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010333205.7A CN111617526B (en) | 2020-04-24 | 2020-04-24 | Rotary drum type solid-liquid separator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010333205.7A CN111617526B (en) | 2020-04-24 | 2020-04-24 | Rotary drum type solid-liquid separator |
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| Publication Number | Publication Date |
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| CN111617526A true CN111617526A (en) | 2020-09-04 |
| CN111617526B CN111617526B (en) | 2023-04-07 |
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| CN202010333205.7A Active CN111617526B (en) | 2020-04-24 | 2020-04-24 | Rotary drum type solid-liquid separator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113712222A (en) * | 2021-09-06 | 2021-11-30 | 新疆华丹原牧农业科技有限公司 | Full-automatic dehydrated vegetable processing production line |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2328509Y (en) * | 1998-06-13 | 1999-07-14 | 陈书公 | High efficiency extruding and dehydrating machine |
| CN203853184U (en) * | 2014-03-18 | 2014-10-01 | 湘潭通用离心机有限公司 | Composite filter cloth frame type drum device for double-stage centrifugal discharge centrifuges |
| CN107115710A (en) * | 2017-07-24 | 2017-09-01 | 程慧骅 | A kind of evolvent type rotary drum bias extruding filter press |
| CN110170202A (en) * | 2019-06-14 | 2019-08-27 | 无锡市东泉环境科技有限公司 | Twin drum rotary drum filter |
| CN110304809A (en) * | 2019-07-31 | 2019-10-08 | 湖南鼎元机械有限公司 | It is a kind of to compress and centrifugal compound formula muddy water dewaterer |
-
2020
- 2020-04-24 CN CN202010333205.7A patent/CN111617526B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2328509Y (en) * | 1998-06-13 | 1999-07-14 | 陈书公 | High efficiency extruding and dehydrating machine |
| CN203853184U (en) * | 2014-03-18 | 2014-10-01 | 湘潭通用离心机有限公司 | Composite filter cloth frame type drum device for double-stage centrifugal discharge centrifuges |
| CN107115710A (en) * | 2017-07-24 | 2017-09-01 | 程慧骅 | A kind of evolvent type rotary drum bias extruding filter press |
| CN110170202A (en) * | 2019-06-14 | 2019-08-27 | 无锡市东泉环境科技有限公司 | Twin drum rotary drum filter |
| CN110304809A (en) * | 2019-07-31 | 2019-10-08 | 湖南鼎元机械有限公司 | It is a kind of to compress and centrifugal compound formula muddy water dewaterer |
Non-Patent Citations (1)
| Title |
|---|
| 中国冶金设备总公司: "《现代大型高炉设备及制造技术》", 30 April 1996, 冶金工业出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113712222A (en) * | 2021-09-06 | 2021-11-30 | 新疆华丹原牧农业科技有限公司 | Full-automatic dehydrated vegetable processing production line |
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| CN111617526B (en) | 2023-04-07 |
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