CN113695094A - Liquid skimming device, liquid skimming method and centrifugal machine - Google Patents
Liquid skimming device, liquid skimming method and centrifugal machine Download PDFInfo
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- CN113695094A CN113695094A CN202111082776.9A CN202111082776A CN113695094A CN 113695094 A CN113695094 A CN 113695094A CN 202111082776 A CN202111082776 A CN 202111082776A CN 113695094 A CN113695094 A CN 113695094A
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- scraper
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- phase material
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- 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
- B04B11/08—Skimmers or scrapers for discharging ; Regulating thereof
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Abstract
The invention relates to the technical field of wheat deep processing, in particular to a liquid skimming device, a liquid skimming method and a centrifugal machine, which comprise the following steps: a mount provided on a cover of the centrifuge; the rotating shaft is rotatably connected to the inner wall of the mounting seat; and the driving part is arranged on the mounting seat and can drive the rotating shaft to rotate. According to the scraper, the scraper is arranged to be elastically attached to the surface of the solid-phase material in a rotating mode, when the scraper rotates to be gradually close to the surface of the solid-phase material, the side face of the scraper is in contact with the solid-phase material, the pressure of the solid-phase material to the side face of the scraper is larger than the torsion of the spring through the arrangement of a reasonable contact area, the pressure of the viscous material to the side face of the scraper is smaller than the torsion of the spring, the scraper is enabled to just invade into a viscous material layer to scrape the material, the scraper plays a role in automatic limiting and plays a role in scraping and throwing out the viscous material, and automatic material skimming is achieved.
Description
Technical Field
The invention relates to the technical field of wheat deep processing, in particular to a liquid skimming device, a liquid skimming method and a centrifugal machine.
Background
Starch is mainly composed of amylopectin and amylose. The ratio of amylose to amylopectin determines the structure of the starch granules, which in turn affects the quality, function and application area of the starch. The straight/branch ratio of wheat A-, B-type starch is greatly different, and the gelatinization characteristics of the wheat A-, B-type starch are obviously different. The A-type starch granule has high amylose content, and the B-type starch granule has higher gelatinization temperature and lower peak viscosity, relaxation value and retrogradation value. Therefore, the ideal combination can be recombined by adjusting the proportion of starch with different grain sizes in the starch, the wheat starch has wider application value by subdividing the grain size of the wheat starch, and the economic benefit of wheat is improved.
In the traditional starch production, flour is used as a raw material to produce 62% of wheat starch and 13.5% of wheat gluten, the comprehensive utilization rate only reaches 75.5%, and most of the rest 24.5% except a small part of the wheat starch and the wheat gluten are used for raising pigs by farmers and discharged with water, and meanwhile, a great problem is caused to the sewage treatment problem of enterprises. The separation of A-type and B-type starch begins with the appearance of a precise particle size analyzer, and although the separation is in a development stage, the separation is applied to a plurality of fields, for example, A-type starch grains are one of raw materials for producing carbon paper, B-type starch grains can be used as fillers of film, and B-type starch grains can also be used in aerospace materials due to the superfine size of the B-type starch grains, so that the separation has high economic and technological values.
In the prior art, the dehydration separation of the wheat A, B starch is usually performed manually, the thickness of a solid-phase material is not easy to distinguish, the separation time is inaccurate, the single separation amount is small, and the process of skimming and liquid supplementing needs to be repeated, so the continuity and the production efficiency of the starch separation operation are low.
Prior art documents:
patent document 1: separation and purification process of CN101418048A wheat flour starch grains
Patent document 2: CN109530098A flat plate sedimentation type centrifuge capable of skimming automatically
Disclosure of Invention
The invention aims to provide a liquid skimming device, which comprises:
a mount provided on a cover of the centrifuge;
the rotating shaft is rotatably connected to the inner wall of the mounting seat;
the driving part is arranged on the mounting seat and can drive the rotating shaft to rotate;
the sleeve is sleeved on the outer wall of the rotating shaft and is positioned inside the centrifugal cylinder;
wherein the outer wall of the sleeve is provided with a scraper which is configured to have a slope extending upwards and inclining around the outer wall of the sleeve, the bottom end of the slope has a first edge, the top end of the slope has a second edge, the first edge inclines upwards relative to the horizontal plane, the second edge inclines downwards relative to the horizontal plane, the side edge of the slope has a third edge, and the third edge is configured to be a curve upwards in a spiral direction;
the scraper can be driven by the driving part to move from a first position to a second position, when the scraper is at the second position, one part of a third edge of the inclined surface is contacted with the solid-phase material to form a contact area, the inclined surface comprises a first area immersed into the viscous material layer and a second area positioned outside the viscous material layer, and the second area extends to the inner edge of a liquid baffle plate of the centrifuge cylinder in the radial direction;
the sleeve and the rotating shaft are elastically connected through a torsion spring, so that the scraper can rotate anticlockwise when the contact area is in contact with the solid-phase material.
Preferably, the scraper is arranged at the upper part of the sleeve and is positioned below a liquid baffle plate of the centrifugal cylinder.
Preferably, the area of the contact region is 100-120m2。
Preferably, the first edge is located at the second edge in the counterclockwise direction, and when the sleeve rotates clockwise relative to the rotating shaft, the torsion spring provides an elastic force to the sleeve, so that when the scraper touches the solid-phase material, the scraper rotates clockwise, and has a tendency of rebounding in the counterclockwise direction.
Preferably, the inclined plane and the horizontal plane form an included angle of 45 degrees and incline upwards, so that the viscous materials scraped by the first area move upwards to the second area and are thrown out.
Preferably, the sleeve is provided with three scrapers which are distributed at equal intervals along the axial direction, and the three scrapers are all positioned on the upper half part of the centrifugal cylinder.
Preferably, the driving part comprises an air cylinder, and a driving end of the air cylinder is in transmission connection with the rotating shaft through a connecting rod or a gear.
The invention provides another technical scheme, and the liquid skimming method using the liquid skimming device comprises the following steps:
and 3, driving the rotating shaft to rotate clockwise by the driving part, so that the scraper moves from the second position to the first position.
Preferably, in step 1, in the first position, the scraper is retracted within the inner diameter of the liquid baffle of the centrifuge cylinder, the second position is determined by the thickness layer of the solid-phase material detected by the solid-phase material detection device, and the second position is at the circumferential position of the solid-phase material layer.
The invention provides another technical scheme, and the centrifugal machine comprises the liquid skimming device in the scheme, and further comprises a shell and a centrifugal cylinder, wherein the automatic liquid skimming device is installed on the shell and extends to the inner side of the centrifugal cylinder.
Compared with the prior art, the invention has the advantages that:
according to the invention, the scraper is arranged to be elastically attached to the surface of the solid-phase material in a rotating manner, when the scraper rotates to be gradually close to the surface of the solid-phase material, the side surface of the scraper is in contact with the solid-phase material, the pressure of the solid-phase material to the side surface of the scraper is greater than the torsion of the spring by setting a reasonable contact area, and the pressure of the viscous material to the side surface of the scraper is smaller than the torsion of the spring, so that the scraper just invades into a viscous material layer to scrape the material, and the scraper plays a role in automatic limiting and scraping and throwing out the viscous material.
The invention can automatically adjust the scraping thickness according to the thickness of the sticky material, so that the sticky material on the surface of the solid-phase material is scraped, the automatic skimming is realized, the quality of the remained solid-phase material is kept good, the sticky material on the inner wall is remained, the automatic starch separation operation is completed by matching with a centrifugal machine, and the automatic starch separation device can adapt to the automatic production with large yield and high quality.
It should be understood that all combinations of the foregoing concepts and additional concepts described in greater detail below can be considered as part of the inventive subject matter of this disclosure unless such concepts are mutually inconsistent. In addition, all combinations of claimed subject matter are considered a part of the presently disclosed subject matter.
The foregoing and other aspects, embodiments and features of the present teachings can be more fully understood from the following description taken in conjunction with the accompanying drawings. Additional aspects of the present invention, such as features and/or advantages of exemplary embodiments, will be apparent from the description which follows, or may be learned by practice of specific embodiments in accordance with the teachings of the present invention.
Drawings
The drawings are not intended to be drawn to scale. In the drawings, each identical or nearly identical component that is illustrated in various figures may be represented by a like numeral. For purposes of clarity, not every component may be labeled in every drawing. Embodiments of various aspects of the present invention will now be described, by way of example, with reference to the accompanying drawings, in which:
FIG. 1 is a schematic view of the location of a skimmer apparatus of the present invention in a centrifuge;
FIG. 2 is a schematic structural view of a liquid skimming device according to the present invention;
FIG. 3 is a top view of a doctor blade of the present invention;
Detailed Description
In order to better understand the technical content of the present invention, specific embodiments are described below with reference to the accompanying drawings.
In this disclosure, aspects of the present invention are described with reference to the accompanying drawings, in which a number of illustrative embodiments are shown. Embodiments of the present disclosure are not necessarily intended to include all aspects of the invention. It should be understood that the various concepts and embodiments described above, as well as those described in greater detail below, may be implemented in any of numerous ways with any skimmer apparatus and centrifuge, as the disclosed concepts and embodiments are not limited to any embodiment. In addition, some aspects of the present disclosure may be used alone, or in any suitable combination with other aspects of the present disclosure.
As shown in fig. 1, after the liquid is replenished, the solid-phase material still contains some impurities, etc., and the surface of the material needs to be cleaned, and the inner wall of the washed solid-phase material has a viscous material layer, which needs to be scraped, otherwise, in the subsequent material scraping step, wet adhesive particles exist in the finished starch.
Therefore, the automatic liquid skimming device 9 is used to scrape off the viscous material layer on the inner layer of the solid material, and as shown in fig. 2, the automatic liquid skimming device 9 comprises a mounting seat 911, a rotating shaft 92, a driving part 91, a sleeve 93 and a scraper 94.
The mounting seat 911 is provided on the cover 31 of the centrifuge; the rotating shaft 92 is rotatably connected to the inner wall of the mounting seat 911; the driving part 91 is arranged on the mounting seat 911 and can drive the rotating shaft 92 to rotate; the sleeve 93 is sleeved on the outer wall of the rotating shaft 92 and is located inside the centrifugal cylinder 93.
Referring to fig. 3, wherein the outer wall of the sleeve 93 is provided with a scraper 94 (the skimmer comprises the sleeve 93 and the scraper 94), the scraper 94 is configured to have a slope inclined around the outer wall of the sleeve 93 and extending upward, the bottom end of the slope has a first edge 941, the top end has a second edge 942, the first edge 941 is inclined upward with respect to the horizontal plane, the second edge 942 is inclined downward with respect to the horizontal plane, the side edge of the slope has a third edge 943, and the third edge 943 is configured to be a curve spiraling upward. The inclined plane and the horizontal plane form an included angle of 45 degrees and incline upwards.
Further, the sleeve 93 and the rotating shaft 92 are elastically connected by a torsion spring 95.
Referring to fig. 1, the sleeve 93 can be driven by the driving device to rotate relative to the housing 3 to reciprocate between a first position and a second position, wherein the scraper 94 is close to the bonding surface of the solid phase material and the liquid phase material detected by the second level indicator 6.
In the second position, a portion of the third edge 943 of the ramp contacts the solid material, forming a contact zone, the ramp including a first zone immersed in the layer of viscous material and a second zone located outside the layer of viscous material, the second zone extending in the radial direction inside the inner edge of the baffle 22 of the centrifuge bowl 2.
Thus, as shown in fig. 1, when liquid skimming is performed, the rotating shaft 92 is driven by the driving member 91 to rotate counterclockwise, the sleeve 93 rotates counterclockwise, when the scraper 94 rotates to contact with the viscous material on the surface of the solid phase material, the scraper 94 continues to rotate inward until the scraper rotates to an angle exceeding the surface of the solid phase material, when the scraper 94 contacts with the surface of the solid phase material, the contact surface of the third edge 943 with the solid phase material prevents the scraper 94 from continuously intruding inward, and the torsional spring 95 between the rotating shaft 92 and the sleeve 93 provides elastic connection to rotate relatively, so that the third edge 943 only contacts with the surface of the solid phase material without intruding, and the inclined surface guides and scrapes the viscous material, so that the viscous material is discharged from the opening 201 of the inner edge of the liquid baffle plate 22.
In the radial direction, the first edge 941 is at least partially within the coverage of the liquid guard 22, and the second edge 942 is outside the coverage of the liquid guard 22, so that the inclined surface portion is within the coverage of the liquid guard 22, that is, the portion contacting with the viscous material on the inner layer of the solid-phase material, and aims to scrape the viscous material onto the inclined surface, and the portion extending continuously on the inclined surface plays a role in guiding the material, and at the end of the inclined surface, the portion is outside the coverage of the liquid guard 22, and when the material slips to the end of the inclined surface, the material flies upwards and slides between the centrifuge tube 2 and the housing 3.
In connection with fig. 1, a scraper 94 is arranged in the upper part of the sleeve 93 below the baffle 22 of the centrifuge bowl 2, whereby material thrown upwards during rotation of the centrifuge bowl 2 is scraped off the centrifuge bowl 2 when passing the scraper 94.
In a preferred example, the third rim 943 has a fastening surfaceA contact area contacted with the phase material, the area of the contact area is 100-120m2。
Further, as shown in fig. 3, the first edge 941 is located at the counterclockwise direction of the second edge 942, and when the sleeve 93 rotates clockwise relative to the rotating shaft 92, the torsion spring 95 provides an elastic force to the sleeve 93, so that when the scraper 94 contacts the solid phase material, the sleeve rotates clockwise and tends to rebound counterclockwise.
Thus, the third edge 943 is under the contact pressure of the solid-phase material when contacting the solid-phase material and is larger than the torsion of the spring, and the third edge 943 is in non-rigid contact with the solid-phase material, so that the third edge 943 can be prevented from being immersed in the solid-phase material, and the solid-phase material layer is prevented from being peeled off.
Preferably, three scrapers 94 are arranged on the sleeve 93 at equal intervals along the axial direction, and the three scrapers 94 are all positioned on the upper half part of the centrifugal cylinder, so that the liquid skimming range and the liquid skimming efficiency can be increased through the three scrapers 94.
In an alternative embodiment, the driving part 91 comprises a cylinder, and the driving end of the cylinder is in transmission connection with the rotating shaft 92 through a connecting rod or a gear.
The invention provides another technical scheme, and the liquid skimming method using the liquid skimming device comprises the following steps:
and 3, driving the rotating shaft 92 to rotate clockwise by the driving part, so that the scraper 94 moves from the second position to the first position.
Preferably, in step 1, in the first position, the scraper 94 is retracted within the inner diameter of the liquid baffle 22 of the centrifuge cylinder 2, the second position is determined by the thickness layer of the solid phase material detected by the solid phase material detection device, and the second position is at the circumferential position of the solid phase material layer.
The invention provides another technical scheme, and the centrifugal machine comprises the liquid skimming device in the scheme, and further comprises a shell and a centrifugal cylinder, wherein the automatic liquid skimming device is installed on the shell and extends to the inner side of the centrifugal cylinder.
By combining the above embodiments, the invention can be automatically driven to move to the combined surface of the solid-phase material and the sticky material, and can automatically adjust the scraping thickness according to the thickness of the sticky material, so that the sticky material on the surface of the solid-phase material is scraped, the automatic material skimming is realized, the quality of the remained solid-phase material is kept good, the sticky material on the inner wall is remained, and the automatic starch separation operation is completed by matching with a centrifugal machine, so that the invention can adapt to the automatic production with large yield and high quality.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention. Therefore, the protection scope of the present invention should be determined by the appended claims.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention. Therefore, the protection scope of the present invention should be determined by the appended claims.
Claims (10)
1. A liquid skimming device, comprising:
a mount provided on a cover of the centrifuge;
the rotating shaft is rotatably connected to the inner wall of the mounting seat;
the driving part is arranged on the mounting seat and can drive the rotating shaft to rotate;
the sleeve is sleeved on the outer wall of the rotating shaft and is positioned inside the centrifugal cylinder;
wherein the outer wall of the sleeve is provided with a scraper which is configured to have a slope extending upwards and inclining around the outer wall of the sleeve, the bottom end of the slope has a first edge, the top end of the slope has a second edge, the first edge inclines upwards relative to the horizontal plane, the second edge inclines downwards relative to the horizontal plane, the side edge of the slope has a third edge, and the third edge is configured to be a curve upwards in a spiral direction;
the scraper can be driven by the driving part to move from a first position to a second position, when the scraper is at the second position, one part of a third edge of the inclined surface is contacted with the solid-phase material to form a contact area, the inclined surface comprises a first area immersed into the viscous material layer and a second area positioned outside the viscous material layer, and the second area extends to the inner edge of a liquid baffle plate of the centrifuge cylinder in the radial direction;
the sleeve and the rotating shaft are elastically connected through a torsion spring, so that the scraper can rotate anticlockwise when the contact area is in contact with the solid-phase material.
2. The liquid skimming device of claim 1, wherein said scraper is disposed at an upper portion of said sleeve below a baffle of a centrifuge bowl.
3. The liquid skimming device of claim 1, wherein the area of the contact area is 100-120m2。
4. The skimmer device of claim 1, wherein the first edge is positioned counterclockwise relative to the second edge, and wherein the torsion spring provides a spring force to the sleeve when the sleeve is rotated clockwise relative to the shaft to rotate clockwise when the scraper contacts the solid phase material and has a tendency to spring back counterclockwise.
5. The liquid skimming device according to claim 1, wherein the inclined plane has an angle of 45 ° with the horizontal plane and is inclined upward so that the viscous material scraped off by the first region is thrown out after moving upward to the second region.
6. The liquid skimming device of claim 1, wherein said sleeve is provided with three of said scrapers axially spaced apart, and wherein said three scrapers are located in the upper half of the centrifuge cylinder.
7. The liquid skimming device of claim 1, wherein the driving member comprises a cylinder, and the driving end of the cylinder is in transmission connection with the rotating shaft through a connecting rod or a gear.
8. A liquid skimming method, characterized by comprising the steps of:
step 1, a driving part drives a rotating shaft to rotate anticlockwise, so that a scraper moves from a first position to a second position;
step 2, a scraper is immersed into the viscous material layer on the inner wall of the solid-phase material and elastically attached to the surface of the solid-phase material layer, so that the viscous material layer is guided by the inclined plane and is scraped off the centrifugal cylinder along the inclined plane;
and 3, driving the rotating shaft to rotate clockwise by the driving part, so that the scraper moves from the second position to the first position.
9. The liquid skimming method of claim 8, wherein; in the step 1, when the scraper is at the first position, the scraper is contracted to be within the inner diameter of the liquid baffle plate of the centrifuge cylinder, the second position is determined by the thickness layer of the solid-phase material detected by the solid-phase material detection device, and the second position is at the circumferential position of the solid-phase material layer.
10. A centrifuge comprising the automatic skimmer apparatus of any one of claims 1-7, further comprising a housing and a bowl, said automatic skimmer apparatus being mounted to said housing and extending inside said bowl.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111082776.9A CN113695094B (en) | 2021-09-15 | 2021-09-15 | Liquid skimming device, liquid skimming method and centrifugal machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111082776.9A CN113695094B (en) | 2021-09-15 | 2021-09-15 | Liquid skimming device, liquid skimming method and centrifugal machine |
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| CN113695094A true CN113695094A (en) | 2021-11-26 |
| CN113695094B CN113695094B (en) | 2023-05-02 |
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Cited By (1)
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| CN112871468A (en) * | 2020-12-23 | 2021-06-01 | 河北化工医药职业技术学院 | Material layer controller of centrifugal machine |
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| Publication number | Publication date |
|---|---|
| CN113695094B (en) | 2023-05-02 |
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