CN112295745A - Horizontal screw machine feed arrangement structure - Google Patents
Horizontal screw machine feed arrangement structure Download PDFInfo
- Publication number
- CN112295745A CN112295745A CN202011009107.4A CN202011009107A CN112295745A CN 112295745 A CN112295745 A CN 112295745A CN 202011009107 A CN202011009107 A CN 202011009107A CN 112295745 A CN112295745 A CN 112295745A
- Authority
- CN
- China
- Prior art keywords
- pipeline
- feeding
- horizontal screw
- pipe
- flocculation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000005189 flocculation Methods 0.000 claims abstract description 20
- 230000016615 flocculation Effects 0.000 claims abstract description 20
- 239000007788 liquid Substances 0.000 claims description 11
- 238000005192 partition Methods 0.000 claims description 10
- 239000010410 layer Substances 0.000 claims description 7
- 239000011229 interlayer Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 abstract description 16
- 239000008394 flocculating agent Substances 0.000 abstract description 7
- 238000000926 separation method Methods 0.000 description 9
- 239000007787 solid Substances 0.000 description 7
- 239000002245 particle Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
- B04B1/20—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/01—Separation of suspended solid particles from liquids by sedimentation using flocculating agents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B11/00—Feeding, charging, or discharging bowls
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5281—Installations for water purification using chemical agents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Treatment Of Sludge (AREA)
Abstract
The utility model provides a spiral shell machine feed arrangement structure crouches, including inlet pipe and the coaxial spiral mandrel that cup joints in the rotary drum, divide into flocculation district and feeding district in the spiral mandrel, the inlet pipe is by the coaxial double-deck pipeline structure who cup joints the constitution mutually of outside pipeline and inner tube, the flange is passed through to the one end of outside pipeline and links to each other with outside feed pipeline, the one end erection joint of flange is close to the outside pipeline, its other end evenly sets up two rows of through-holes along radial on the surface, the one end that outer pipeline was kept away from to the inner tube extends into the feeding district through the flocculation district, be equipped with the discharge gate in the circumference in feeding district, spiral mandrel installs helical blade in the circumference, be equipped with the through-hole in the circumference in flocculation district. The device can directly send the flocculating agent into the rotary drum to be fully mixed with the materials, and simultaneously adopts a concentric double-layer pipeline structure. The pipeline fracture caused by the resonance phenomenon caused by the fact that the natural frequency of the pipeline is close to the operation frequency of the horizontal screw machine is avoided.
Description
Technical Field
The invention belongs to the technical field of material transmission, and particularly relates to a feeding device structure of a horizontal screw machine.
Background
A horizontal spiral discharge settling centrifuge, called a horizontal screw machine for short, is processing equipment widely used in solid-liquid separation application. The working principle is that the rotary drum and the spiral pusher rotate at a high speed in the same direction at a certain difference of rotating speed, fluid suspended matters consisting of liquid and solid are continuously introduced into the spiral pusher through the feeding pipe, enter the rotary drum after being accelerated, heavy solid matters are deposited on the wall of the rotary drum to form a sediment layer under the action of centrifugal force, the spiral pusher continuously pushes the deposited solid matters to the conical end of the rotary drum and is discharged out of the machine through a slag outlet, and clear liquid generated along with the deposition continuously flows to the other end of the rotary drum and is discharged through an overflow port.
As a separation device, the horizontal screw relies primarily on particle size and density to achieve separation of solids from liquids. In some applications, such as sludge dewatering, the solid particles are too fine to separate by themselves, and it is necessary to add a flocculating agent to the material in order to change the electrochemical force on the surface of the particles, so that the fine solid particles agglomerate to form larger-sized flocs, thereby improving the settling performance and separation efficiency. When adding flocculants to the material, good mixing is necessary or an excess of polymer is required to ensure adequate flocculation. Typically, the flocculant is added upstream of the horizontal screw, for example, by being added to the material through a line mixer and mixed before entering the horizontal screw for separation. However, for high speed centrifuges it is often necessary to add the flocculant directly to the bowl to avoid flocculation too early which can lead to substantial breakdown of the flocs before settling begins, reducing the settling properties and separation efficiency of the material.
Disclosure of Invention
The technical problem to be solved by the invention is to overcome the defects of the prior art, and provide a horizontal screw machine feeding device structure, which can directly feed a flocculating agent into a rotary drum to be fully mixed with materials and simultaneously adopts a concentric double-layer pipeline structure. The pipeline fracture caused by the resonance phenomenon caused by the fact that the natural frequency of the pipeline is close to the operation frequency of the horizontal screw machine is avoided.
The invention provides a horizontal screw feeder structure, which comprises a feed pipe (8) and a spiral mandrel (2) coaxially sleeved in a rotary drum (1), wherein the spiral mandrel (2) is internally divided into a flocculation zone (15) and a feed zone (16), the feed pipe (8) is a concentric double-layer pipeline structure formed by coaxially sleeving an external pipeline (11) and an internal pipeline (14), one end of the external pipeline (11) is connected with the external feed pipeline through a flange (10), one end of the external pipeline (11), which is close to the flange (10), is provided with a joint (9), the other end of the external pipeline (11) is uniformly provided with two rows of through holes (13) along the radial surface, one end of the internal pipeline (14), which is far away from the external pipeline (11), extends into the feed zone (16) through the flocculation zone (15), a discharge hole (5) is arranged in the circumferential direction of the feed zone (16), and spiral blades are arranged in the circumferential direction of the, through holes (7) are formed in the circumferential direction of the flocculation area (15), and the through holes (7) are connected with a liquid pool (6) arranged between the rotary drum (1) and the spiral mandrel (2).
As a further technical scheme of the invention, a partition plate (3) is arranged in the feeding area (16), a group of accelerating blades (4) are radially and symmetrically arranged on the partition plate (3), and the accelerating blades (4) and the radial direction of the spiral mandrel (2) form an angle of 45 degrees.
Furthermore, an interlayer (12) is arranged between the outer pipeline (11) and the inner pipeline (14) which are coaxially sleeved.
Further, the outer pipe (11) is shorter in length than the inner pipe (14), and the outer pipe (11) is aligned with one end of the inner pipe (14) and connected to the outer feed pipe through the flange (10).
Furthermore, a partition plate is arranged between the flocculation area (15) and the feeding area (16).
The invention has the advantages that the flocculating agent is directly fed into the rotary drum to be fully mixed with the materials, so that the flocculation is prevented from being too early to cause a great amount of breakage of flocculates before the precipitation starts, and the sedimentation performance and the separation effect of the materials are influenced. The feeding pipe adopts a concentric double-layer pipeline structure, so that the natural frequency of the pipeline is improved, and the phenomenon that the feeding pipe is resonated to cause fracture and damage due to the fact that the operating frequency of the horizontal screw machine is close to the operating frequency of the horizontal screw machine is avoided.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Detailed Description
Referring to fig. 1, the present embodiment provides a horizontal screw feeder structure, which includes a feeding pipe 8 and a spiral mandrel 2 coaxially sleeved in a rotary drum 1, the spiral mandrel 2 is divided into a flocculation zone 15 and a feeding zone 16, the feeding pipe 8 is a concentric double-layer pipe structure formed by coaxially sleeving an external pipe 11 and an internal pipe 14, one end of the external pipe 11 is connected to the external feeding pipe through a flange 10, one end of the external pipe 11 close to the flange 10 is provided with a joint 9, the other end of the spiral mandrel is uniformly provided with two rows of through holes 13 on the surface along the radial direction, one end of the inner pipeline 14, which is far away from the outer pipeline 11, extends into a feeding area 16 through a flocculation area 15, a discharging hole 5 is arranged in the circumferential direction of the feeding area 16, spiral blades are arranged in the circumferential direction of the spiral mandrel 2, through holes 7 are arranged in the circumferential direction of the flocculation area 15, and the through holes 7 are connected with a liquid pool 6 arranged between the rotary drum 1 and the spiral mandrel 2.
A partition plate 3 is arranged in the feeding area 16, a group of accelerating blades 4 are radially and symmetrically arranged on the partition plate 3, and the angle between the accelerating blades 4 and the radial direction of the spiral spindle 2 is 45 degrees.
An interlayer 12 is arranged between the outer pipe 11 and the inner pipe 14 which are coaxially sleeved.
The outer pipe 11 is shorter in length than the inner pipe 14, and the outer pipe 11 is aligned with one end of the inner pipe 14 and connected to the outer feed pipe by the flange 10.
A partition plate is arranged between the flocculation zone 15 and the feeding zone 16.
The material to be separated enters an inner pipeline 14 from the outside through a flange 10 and enters a feeding area 16 in the spiral mandrel 2 along the inner pipeline 14, a group of accelerating blades 4 which are radially and symmetrically arranged on the partition plate 3 accelerate the material entering the feeding area 16 to the rotating speed of the rotary drum 1, and then the material enters a liquid pool 6 through a discharge hole 5 on the spiral mandrel 2. At the same time, the flocculant is passed from the joint 9 on the outer pipe 11 into the interlayer 12 between the outer pipe 11 and the inner pipe 14 and through two rows of radial through holes 13 on the outer pipe 11 into the flocculation zone 15 inside the spiral mandrel 2 and then through the through holes 7 on the spiral mandrel 2 into the liquid bath 6. The materials and the flocculating agent are fully mixed after entering the liquid pool 6, and fine solid particles in the materials form flocs with larger sizes, can quickly settle down and are pushed out of the machine by the spiral pusher, so that solid-liquid separation is completed.
The flocculating agent is directly sent into the rotary drum inside and fully mixes with the material, avoids mixing before entering the horizontal screw machine, and flocculation too early leads to a large amount of fractures just take place for the flocculate before the beginning of the sediment, influences the settlement performance and the separation effect of material. The feeding pipe adopts a concentric double-layer pipeline structure, so that the natural frequency of the pipeline is improved, and the phenomenon that the feeding pipe is resonated to cause fracture and damage due to the fact that the operating frequency of the horizontal screw machine is close to the operating frequency of the horizontal screw machine is avoided.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are intended to further illustrate the principles of the invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention, which is intended to be protected by the appended claims. The scope of the invention is defined by the claims and their equivalents.
Claims (5)
1. The horizontal screw machine feeding device structure is characterized by comprising a feeding pipe (8) and a spiral mandrel (2) coaxially sleeved in a rotary drum (1), wherein the spiral mandrel (2) is internally divided into a flocculation zone (15) and a feeding zone (16), the feeding pipe (8) is a concentric double-layer pipeline structure formed by coaxially sleeving an external pipeline (11) and an internal pipeline (14), one end of the external pipeline (11) is connected with the external feeding pipeline through a flange (10), one end of the external pipeline (11), which is close to the flange (10), is provided with a joint (9), the other end of the external pipeline (11) is uniformly provided with two rows of through holes (13) on the surface along the radial direction, one end of the internal pipeline (14), which is far away from the external pipeline (11), extends into the feeding zone (16) through the flocculation zone (15), and a discharge hole (5) is formed in the circumferential direction of the feeding zone (16), spiral blades are arranged on the circumferential direction of the spiral mandrel (2), through holes (7) are formed in the circumferential direction of the flocculation area (15), and the through holes (7) are connected with a liquid pool (6) arranged between the rotary drum (1) and the spiral mandrel (2).
2. A horizontal screw feeder structure according to claim 1, characterized in that a partition plate (3) is arranged in the feeding area (16), a group of accelerating blades (4) are radially and symmetrically arranged on the partition plate (3), and the accelerating blades (4) form an angle of 45 degrees with the radial direction of the spiral mandrel (2).
3. A horizontal screw feeder structure according to claim 1, characterized in that an interlayer (12) is provided between the outer pipe (11) and the inner pipe (14) which are coaxially sleeved.
4. A horizontal screw feeder structure according to claim 1, characterized in that the outer pipe (11) is shorter in length than the inner pipe (14), the outer pipe (11) being aligned with one end of the inner pipe (14) and connected to the outer feed pipe by a flange (10).
5. A horizontal screw feeder structure according to claim 1, characterized in that a partition is provided between the flocculation zone (15) and the feeding zone (16).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202011009107.4A CN112295745A (en) | 2020-09-23 | 2020-09-23 | Horizontal screw machine feed arrangement structure |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202011009107.4A CN112295745A (en) | 2020-09-23 | 2020-09-23 | Horizontal screw machine feed arrangement structure |
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Publication Number | Publication Date |
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CN112295745A true CN112295745A (en) | 2021-02-02 |
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ID=74489000
Family Applications (1)
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CN202011009107.4A Pending CN112295745A (en) | 2020-09-23 | 2020-09-23 | Horizontal screw machine feed arrangement structure |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114054220A (en) * | 2021-10-21 | 2022-02-18 | 上海亭博分离技术有限公司 | Glufosinate-ammonium slurry dewatering centrifugal machine |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01189358A (en) * | 1988-01-25 | 1989-07-28 | Pennwalt Corp | Sludge dehydration method and apparatus using decanter type centrifugal separator |
US5935425A (en) * | 1996-09-05 | 1999-08-10 | Sortwell & Co. | Centrifuge with rotatable scroll and means to mix flocculant with feed slurry |
CN106669987A (en) * | 2016-11-30 | 2017-05-17 | 济南汇川硅溶胶厂 | Horizontal spiral sedimentation centrifuge |
CN110142152A (en) * | 2019-05-29 | 2019-08-20 | 浙江工业大学 | Decanter centrifuge feed pipe |
CN110586343A (en) * | 2019-08-30 | 2019-12-20 | 浙江工业大学 | Horizontal screw centrifuge |
CN214416700U (en) * | 2020-09-23 | 2021-10-19 | 南京中船绿洲机器有限公司 | Horizontal screw machine feed arrangement structure |
-
2020
- 2020-09-23 CN CN202011009107.4A patent/CN112295745A/en active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01189358A (en) * | 1988-01-25 | 1989-07-28 | Pennwalt Corp | Sludge dehydration method and apparatus using decanter type centrifugal separator |
US5935425A (en) * | 1996-09-05 | 1999-08-10 | Sortwell & Co. | Centrifuge with rotatable scroll and means to mix flocculant with feed slurry |
CN106669987A (en) * | 2016-11-30 | 2017-05-17 | 济南汇川硅溶胶厂 | Horizontal spiral sedimentation centrifuge |
CN110142152A (en) * | 2019-05-29 | 2019-08-20 | 浙江工业大学 | Decanter centrifuge feed pipe |
CN110586343A (en) * | 2019-08-30 | 2019-12-20 | 浙江工业大学 | Horizontal screw centrifuge |
CN214416700U (en) * | 2020-09-23 | 2021-10-19 | 南京中船绿洲机器有限公司 | Horizontal screw machine feed arrangement structure |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114054220A (en) * | 2021-10-21 | 2022-02-18 | 上海亭博分离技术有限公司 | Glufosinate-ammonium slurry dewatering centrifugal machine |
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