CN215612394U

CN215612394U - Automatic starch separation centrifuge of skimming

Info

Publication number: CN215612394U
Application number: CN202122233850.4U
Authority: CN
Inventors: 朱小龙; 王学明
Original assignee: Zhangjiagang Jinmaisui Centrifuge Co ltd
Current assignee: Zhangjiagang Jinmaisui Centrifuge Co ltd
Priority date: 2021-09-15
Filing date: 2021-09-15
Publication date: 2022-01-25
Anticipated expiration: 2031-09-15

Abstract

The utility model relates to the technical field of deep processing of wheat, in particular to an automatic skimming centrifuge for starch separation, which comprises the following components: a housing having a cylindrical space therein; a drive member fixed to the housing; and the centrifugal cylinder is fixed at the driving end of the driving part, is positioned in the cylindrical space in the shell and can be driven by the driving part to rotate relative to the shell. The utility model is provided with the first material level device for detecting liquid phase materials in the centrifuge cylinder and the second material level device for detecting solid phase materials in the centrifuge cylinder, the thicknesses of the solid phase materials and the liquid phase materials can be detected after liquid is fed, the liquid skimming device moves to the position capable of contacting the surface of the solid phase materials, viscous mixtures on the surface of the solid phase materials are automatically scraped, the solid phase materials after liquid skimming are guaranteed to be dry powder, the quality of products is improved, and compared with manual material skimming in the prior art, the starch separation efficiency and the quality of finished products can be greatly improved.

Description

Automatic starch separation centrifuge of skimming

Technical Field

The utility model relates to the technical field of deep processing of wheat, in particular to an automatic skimming centrifugal machine for starch separation.

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

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provides an automatic skimming centrifugal machine for starch separation, which comprises:

a housing having a cylindrical space therein;

a drive member fixed to the housing;

the centrifugal cylinder is fixed at the driving end of the driving part, is positioned in the cylindrical space in the shell and can be driven by the driving part to rotate relative to the shell;

the rotating axis of the centrifugal cylinder is vertical to the ground, a gap is formed between the centrifugal cylinder and the shell to form an interlayer, an opening is formed in the upper part of the centrifugal cylinder, and the diameter of the opening is smaller than that of the centrifugal cylinder;

the shell is provided with a feed pipe extending from the opening of the centrifugal cylinder to the interior of the centrifugal cylinder and used for inputting slurry into the centrifugal cylinder, and a discharge port of the feed pipe radially extends to the inner side of the opening;

the bottom of the shell is also provided with a liquid outlet communicated with the interlayer;

a discharge opening is arranged below the centrifugal cylinder;

the centrifugal cylinder is characterized in that the shell is also provided with a first material level indicator and a second material level indicator, the first material level indicator extends from the opening of the centrifugal cylinder to the inside of the centrifugal cylinder, the first material level indicator is used for obtaining the distance between a liquid-phase material in the centrifugal cylinder and the side wall, when the first material level indicator reaches a preset value, the centrifugal cylinder is increased from a first rotating speed to a second rotating speed, and the second material level indicator is used for obtaining the distance between a solid-phase material in the centrifugal cylinder and the side wall;

the liquid supplementing pipe is arranged to continuously supplement liquid into the centrifugal cylinder when the centrifugal cylinder is at a second rotating speed and the second material level indicator does not reach a preset value;

the washing device also comprises a washing pipe which is set to input washing liquid with preset duration into the centrifugal cylinder when the centrifugal cylinder is at a second rotating speed and the second material level indicator reaches a preset value;

the centrifugal cylinder is arranged at a first rotating speed, and the centrifugal cylinder is arranged at a second rotating speed.

Preferably, the skimming device is fixed to the shell and comprises a skimming knife and a driving part, the skimming knife can be driven by the driving part to rotate relative to the shell and reciprocate to a first position and a second position, and in the second position, the skimming knife is close to the combined surface of the solid-phase material and the liquid-phase material detected by the second material level device.

Preferably, the centrifugal machine further comprises a discharging scraper, and the discharging scraper is used for scraping solid-phase materials on the inner wall of the centrifugal cylinder when the centrifugal cylinder is at a third rotating speed, so that the solid-phase materials are discharged from the discharge opening and the discharge groove.

Preferably, the axis of the discharge scraper is parallel to the axis of the centrifugal cylinder.

Preferably, the discharge scraper is arranged to include a first position and a second position, and can be adjacent to the inner wall of the centrifuge cylinder in the second position.

Preferably, the discharge scraper can be driven by the driving part to move along the axial direction when in the second position so as to scrape the material on the inner wall.

Preferably, first material level ware includes first arc blade, pivot, torsional spring and switch part, first arc blade is fixed to the pivot outer wall, the pivot pass through the torsional spring with shell elastic connection, first arc blade is set to and is exerted the trend that has to the inner wall motion of centrifuge bowl by the spring to be set to, first arc blade is promoted when contacting with centrifuge bowl inner wall liquid phase material and is overcome spring pressure to can rotate along with centrifuge bowl inner wall liquid phase material thickness increases, work as after first arc blade rotates predetermined angle, trigger switch part.

Preferably, the second material level indicator includes second arc blade, pivot, torsional spring and switch part, second arc blade is fixed to the pivot outer wall, the pivot pass through the torsional spring with shell elastic connection, second arc blade is set to and is exerted the trend that has to the motion of centrifuge bowl inner wall by the spring to be pressed, second arc blade is promoted when contacting with centrifuge bowl inner wall solid phase material and is overcome spring pressure to can rotate along with centrifuge bowl inner wall solid phase material thickness increases, work as after second arc blade rotates predetermined angle, trigger switch part.

Preferably, the discharge opening is annular, and the outer diameter of the discharge opening is smaller than the diameter of the opening.

The utility model provides another technical scheme, and a wheat separation method using the full-automatic unloading centrifuge in the scheme comprises the following steps:

step 1, feeding: controlling the centrifugal cylinder to be at a first rotating speed, adding A, B starch mixed liquor into the centrifugal cylinder from the bottom by using a feeding pipe, and stopping feeding when a first material level device detects that the liquid-phase material reaches a preset thickness;

step 2, feeding: after feeding is stopped, the centrifugal cylinder is increased from the first rotating speed to the second rotating speed, and material is supplemented by using a material supplementing pipe until a second material level device detects that the solid-phase material reaches a preset thickness, and material supplementing is stopped;

step 3, washing: washing the surface of the solid-phase material by using a washing solution at a second rotating speed by using the centrifugal cylinder;

step 4, liquid skimming: moving the liquid skimming device to be in contact with the surface of the solid-phase material, scraping off the viscous material on the surface of the solid-phase material, and remaining dry solid-phase material;

step 5, unloading: and moving the scraper to contact with the surface of the solid-phase material and continuously moving downwards to scrape the solid-phase material.

Compared with the prior art, the utility model has the advantages that:

the utility model is provided with a first material level device for detecting liquid phase materials in the centrifugal cylinder and a second material level device for detecting solid phase materials in the centrifugal cylinder, and the thicknesses of the solid phase materials and the liquid phase materials can be detected after liquid is fed, so that liquid supplement can be automatically completed, the solid phase materials are continuously accumulated and are detected in real time by the second material level device until the thickness is preset, then the liquid skimming device is moved to the position capable of contacting the surface of the solid phase materials, viscous mixtures on the surface of the solid phase materials are automatically scraped, the solid phase materials after liquid skimming are guaranteed to be dry powder, the quality of products is improved, and compared with manual material skimming in the prior art, the starch separation efficiency and the quality of finished products can be greatly improved.

The scraper in the liquid skimming device is arranged to be elastically attached to the surface of a 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, the material is scraped, and the scraper plays a role in automatic limiting and plays a role in scraping and throwing out the viscous material.

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 flow diagram of a fully automatic drop discharge centrifuge of the present invention;

FIG. 2 is a schematic structural view of the feed process of the full automatic unloading centrifuge of the present invention;

FIG. 3 is a schematic view of a first level indicator according to the present invention;

FIG. 4 is a schematic structural diagram of a feeding process of the full-automatic discharging centrifuge of the present invention;

FIG. 5 is a schematic view of a second level indicator according to the utility model;

FIG. 6 is a schematic diagram of the washing process of the fully automatic unloading centrifuge of the present invention;

FIG. 7 is a schematic structural view of a skimming process of the fully automatic drop discharge centrifuge of the present invention;

FIG. 8 is a schematic view of the construction of a liquid skimmer apparatus of the present invention;

FIG. 9 is a schematic view of the construction of the doctor blade of the utility model

FIG. 10 is a schematic structural view of the discharge process of the full automatic downdraft centrifuge of the present invention;

FIG. 11 is a schematic top view of the fully automatic unloading centrifuge of the present invention;

FIG. 12 is a graph illustrating the operation of the fully automatic drop discharge centrifuge 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 utility model. 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 using a centrifuge for automatic skimming, 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.

In the prior art, the centrifugal separation of starch is usually high-speed feeding, the high-speed feeding can cause uneven distribution of materials, irregular solid-liquid phase material separation surfaces are generated on the inner wall of a centrifugal cylinder, the thickness of the solid phase materials cannot be detected, liquid skimming is usually carried out manually, the quality of the solid phase materials is easily uneven, sticky particles exist during discharging, the starch is impure, and the high-quality and high-yield starch separation operation cannot be met.

Referring to fig. 2, the present invention aims to overcome the defects of the prior art, and provides an automatic skimming centrifuge for starch separation, which mainly comprises a housing 3, a driving part 1, a centrifuge drum 2, a feeding pipe 4, a liquid supplementing pipe, a first material level device 5, a second material level device 6, a skimming device 9 and a discharging scraper 10.

Centrifugal cylinder

Referring to fig. 2, the housing 3 has a cylindrical space therein, a cover 31 at an upper portion thereof, and a driving member at a bottom portion thereof, wherein the driving member 1 includes a discharge pipe and a driving motor.

The driving end of the driving motor is connected to the centrifugal cylinder 2, and the centrifugal cylinder 2 is located in a cylindrical space in the housing 3 and can be driven by the driving motor to rotate relative to the housing 3.

Furthermore, the rotation axis of the centrifuge bowl 2 is perpendicular to the ground, a gap is formed between the centrifuge bowl 2 and the casing 3 to form an interlayer, an opening 201 is arranged at the upper part of the centrifuge bowl 2, the diameter of the opening 201 is smaller than that of the centrifuge bowl 2, and correspondingly, a discharge port 202 is arranged at the lower part of the centrifuge bowl 2.

Furthermore, the casing 3 is provided with a feeding pipe 4 extending from the opening 201 of the centrifuge bowl 2 to the inside of the centrifuge bowl 2 for feeding slurry into the centrifuge bowl 2, the discharge port 41 of the feeding pipe 4 extends radially to the inside of the opening 201, and the discharge port 41 is located at the bottom of the centrifuge bowl 2, so that feeding is performed from the bottom, and feeding is performed at a medium speed during feeding, solid-phase and liquid-phase materials are not separated, and the materials can be uniformly spread over the side wall 21 of the centrifuge bowl 2.

Furthermore, a first level indicator 5 and a second level indicator 6 are further disposed on the casing 3, the first level indicator 5 is used for obtaining a distance between a liquid phase material in the centrifuge bowl 2 and the side wall 21, when the first level indicator 5 reaches a preset value, the centrifuge bowl 2 is increased from a first rotation speed to a second rotation speed, and the second level indicator 6 is used for obtaining a distance between a solid phase material in the centrifuge bowl 2 and the side wall 21.

Further, the liquid supplementing pipe 7 is configured to continuously supplement liquid into the centrifugal cylinder 2 when the centrifugal cylinder 2 is at the second rotating speed and the second material level indicator 6 does not reach the preset value; the washing pipe 8 is set to input washing liquid into the centrifugal cylinder 2 for a preset time when the centrifugal cylinder 2 is at a second rotating speed and the second material level indicator 6 reaches a preset value; the skimmer unit 9 is arranged to skim a predetermined thickness layer of the inner layer of solid phase material in the centrifuge bowl 2 at a second rotational speed of the centrifuge bowl 2.

During the feeding process, a first level gauge 5 is arranged in the centrifuge tube 2 to detect the thickness of the feed.

First level indicator

Referring to fig. 2-3, the first level indicator 5 comprises a first curved blade 51, a rotating shaft a52, a torsion spring and a switch member 53, the first curved blade 51 is fixed to the outer wall of the rotating shaft, the rotating shaft is elastically connected with the housing 3 through the torsion spring, the first curved blade 51 is arranged to be spring-biased with a tendency to move towards the inner wall 21 of the centrifuge bowl 2, the first curved blade 51 is pushed against the spring pressure when contacting the liquid phase material in the inner wall 21 of the centrifuge bowl 2 and can rotate as the thickness of the liquid phase material in the inner wall 21 of the centrifuge bowl 2 increases, and the switch member is triggered when the first curved blade 51 rotates a predetermined angle.

In particular, as shown in connection with fig. 2-3, attachment seat a54 is mounted to the centrifuge lid 31; the rotating shaft a52 is rotatably connected with the connecting seat a 54; the first arc-shaped blade 51 is connected to the bottom end of the rotating shaft a 52; the driving part is fixed on the connecting seat a54 and can drive the rotating shaft a52 to rotate by a preset angle, so that the first arc-shaped blade 51 is in a first position (the position that the liquid phase material is close to the inner wall 21 of the centrifugal cylinder 2) or a second position (the position inside the opening 201 of the centrifugal cylinder 2);

wherein, when the liquid phase material is increased from the first thickness to the second thickness, the first arc-shaped blade 51 is moved from the first position to the third position (the position where the liquid phase material approaches the opening 201 of the centrifugal cylinder 2) and triggers the switch part 53 installed on the connection seat a54, and when the liquid phase material is decreased from the second thickness to the first thickness, the first arc-shaped blade 51 is rebounded to the first position by the torsion spring, wherein the third position is located between the first position and the second position.

So, first arc blade 51 is when contacting with the liquid phase material, is exerted pressure by the liquid phase material, through the moment of torsion of selecting suitable contact surface and spring, can realize when the thickness of liquid phase material increases, and the arc blade rotates certain angle thereupon, consequently, realizes the detection to liquid phase material thickness, establishes the basis for the thickness of the interior liquid phase material of automated inspection centrifuge tube.

As shown in fig. 3, preferably, the first arc-shaped blade 51 is provided with an arc-shaped contact plate 511, and the arc-shaped contact plate 511 has an arc-shaped contact surface for contacting the liquid phase material. The arc-shaped contact surface is arranged to be always tangent to the liquid phase material when the liquid phase material rises from the first thickness to the second thickness. In this way, the pressure exerted by the liquid phase material can be kept constant or increased without the first arc-shaped blade 51 being immersed in the liquid phase material.

In a preferred example, the area of the arc-shaped contact surface is 2-2.4cm²。

In an alternative embodiment, the driving part comprises a cylinder, and the driving end of the cylinder is in transmission connection with the rotating shaft a52 through a connecting rod or a gear. To move the first arc-shaped blade 51 to the first position or the second position.

Furthermore, an arc-shaped groove 541 is arranged on the connecting seat a54, a limiting rod connected to the arc-shaped groove 541 is arranged on the rotating shaft a52, and one end of the limiting rod is slidably connected in the arc-shaped groove 541. In an alternative embodiment, the switch means comprises a proximity switch such that when the first arcuate blade 51 is in the third position, the proximity switch is triggered by the stop lever.

In other embodiments, the switch component may also be a sensor capable of sensing the position state or the rotation angle of the rotating shaft a52, such as an infrared sensor or a light sensor.

Second level indicator

Referring to fig. 4, during the high-speed fluid infusion process, the solid phase material will stick to the sidewall 21 and the liquid phase material is located in the inner layer according to the centrifugal force during the feeding process, when the liquid phase material increases gradually and the thickness of the liquid phase material increases to the inner edge of the liquid baffle plate 22, the liquid phase material is discharged into the interlayer between the centrifuge tube 2 and the casing 3 through the opening 201 and is discharged from the liquid outlet 32 at the bottom, the solid phase material also becomes thicker, and in order to detect the thickness of the solid phase material, the second material level indicator 6 is arranged inside the centrifuge tube 2.

Referring to FIG. 5, the second level indicator 6 comprises a second arc-shaped blade 61, a rotating shaft b62, a torsion spring and a switch component, the second arc-shaped blade 61 is fixed on the outer wall of the rotating shaft, the second arc-shaped blade 61 is arranged to be pressed by the spring and has a tendency to move towards the inner wall 21 of the centrifuge bowl 2, the second arc-shaped blade 61 is pushed to overcome the spring pressure when contacting with the solid phase material on the inner wall 21 of the centrifuge bowl 2 and can rotate along with the increase of the thickness of the solid phase material on the inner wall 21 of the centrifuge bowl 2, and the switch component is triggered when the second arc-shaped blade 61 rotates a predetermined angle.

In an alternative embodiment, connection mount b64 is mounted to the centrifuge lid 31; the rotating shaft b62 is rotatably connected with the connecting seat b 64; the second arc-shaped blade 61 is connected to the bottom end of the rotating shaft b 62; the driving member is fixed to the connecting seat b64 and can drive the rotating shaft b62 to rotate by a predetermined angle so as to enable the second arc-shaped blade 61 to be in the first position or the second position.

Wherein, through torsional spring elastic connection between second arc blade 61 and the pivot b62, when solid phase material risen to the second thickness (the position that solid phase material is close to centrifuge tube 2 opening 201) by first thickness (the position that solid phase material is close to centrifuge tube 2 inner wall 21), the arc detects the piece and moves to the third position (the position within centrifuge tube 2 opening 201) by first position (the position that solid phase material is close to centrifuge tube 2 inner wall 21), and trigger the switch part of installing on connecting seat b64, and when solid phase material reduced to first thickness by the second thickness, second arc blade 61 is rebounded to the first position by the torsional spring, wherein, the third position is located between first position and the second position.

In an alternative embodiment, the second arc-shaped blade 61 is a curved thin plate having an arc-shaped contact surface on its outer arc surface, and the thickness of the second arc-shaped blade 61 is 2 mm.

Preferably, the arc-shaped contact surface is arranged to be always tangent to the solid phase material when the solid phase material rises from the first thickness to the second thickness, and forms a contact area which is not fixed, the contact area can be shifted along with the change of the thickness of the material, and the contact area cannot be reduced in the process of increasing the material.

Preferably, the area of the contact area is 100-120mm²。

In an alternative embodiment, the driving part 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.

Preferably, be equipped with the arc wall on connecting seat b64, be equipped with the gag lever post that is connected to the arc wall on the pivot b62, the one end sliding connection of gag lever post is in the arc wall. To limit the rotation angle of the rotation shaft b62 to a range between the first position and the second position.

In an alternative embodiment, the switch means comprises a proximity switch such that when the second arcuate blade 61 is in the third position, the proximity switch is triggered by the stop lever.

Liquid skimming device

Referring to fig. 7, the skimming device 9 is fixed to the casing 3, and the skimming device 9 includes a skimming blade and a driving member, and the skimming blade can be driven by the driving member to rotate relative to the casing 3 to reciprocate between a first position and a second position, and the skimming blade is close to the combination surface of the solid phase material and the liquid phase material detected by the second material level device 6 in the second position.

Specifically, as shown in fig. 8, the mounting seat 911 is provided on the lid 31 of the centrifuge; the rotating shaft c92 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 c92 to rotate; the sleeve 93 is sleeved on the outer wall of the rotating shaft c92 and is located inside the centrifugal cylinder 93.

Referring to fig. 9, in which the outer wall of the sleeve 93 is provided with a scraper b94 (the skimmer comprises a sleeve 93 and a scraper b94), the scraper b94 is configured to have a slope inclined and extending upward around the outer wall of the sleeve 93, 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 spirally 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 c92 are elastically connected by a torsion spring 95.

Thus, as shown in fig. 7, when liquid skimming is performed, the rotating shaft c92 is driven by the driving member 91 to rotate counterclockwise, the sleeve 93 rotates counterclockwise, when the scraper b94 rotates to contact with the viscous material on the surface of the solid phase material, the scraper b94 continues to rotate inward until the angle of the surface of the solid phase material is reached, when the scraper b94 contacts with the surface of the solid phase material, because the third edge 943 has a contact surface with the solid phase material, the scraper b94 is prevented from continuously intruding inward, and the torsion spring 95 between the rotating shaft c92 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, but does not intrude, and the slope 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.

Referring to fig. 7, a scraper b94 is arranged on the upper part of sleeve 93 below the baffle 22 of centrifuge bowl 2, and since the material is thrown upwards during the rotation of centrifuge bowl 2, the material thrown upwards is scraped off centrifuge bowl 2 by scraper b 94.

In a preferred example, the third edge 943 has a contact area with the solid phase material, the contact area having an area of 100-120m²。

Further, as shown in fig. 9, 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 c92, the torsion spring 95 provides an elastic force to the sleeve 93, so that when the scraper b94 touches the solid material, the sleeve rotates clockwise and has a tendency 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 b94 are arranged on the sleeve 93 at equal intervals along the axial direction, and three scrapers b94 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 b 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 c92 through a connecting rod or a gear.

Discharging scraper

After skimming, solid phase materials are scraped, and as shown in fig. 9-10, the discharging scraper 10 is used for scraping the solid phase materials on the inner wall 21 of the centrifuge cylinder 2 at a third rotation speed of the centrifuge cylinder 2, so that the solid phase materials are discharged from the discharge port 202 and the discharge port 41.

The tripper scraper 10 comprises a scraper a12 and a driving member 11, and a scraper a12 is configured to be driven by the driving member 11 to move to a first position (not contacting with the stationary material) or a second position (close to the inner wall of the centrifuge cylinder), and scrapes off the solid phase material during the movement of the scraper a12 from the first position to the second position.

In a preferred example, the axis of scraper a12 is parallel to the axis of centrifuge bowl 2. The scraper a12 can be driven by the driving member 11 to move axially when in the second position to scrape the material from the inner wall. Thus, the scraping surface can be kept flat.

The bottom of the centrifugal cylinder 2 is provided with a discharge opening 202 which is annular, a discharge pipe is correspondingly arranged below the discharge opening, and the discharge pipe is conical. The scraped material is discharged from the discharge opening 202.

[ wheat separation method ]

In combination with the mode of fig. 1 and fig. 12, the utility model provides another technical scheme, and a wheat separation method using the full-automatic unloading centrifuge in the scheme comprises the following steps:

step 1, feeding: controlling the centrifugal cylinder 2 to be at a first rotating speed, adding A, B starch mixed liquor into the centrifugal cylinder from the bottom by using a feeding pipe, and stopping feeding when a first material level device detects that liquid-phase materials reach a preset thickness;

Medium speed feeding

Referring to fig. 1-3, the centrifuge tube 2 is controlled to be at a first rotation speed (medium speed), the feed pipe 4 is used to inject the mixed material into the centrifuge tube 2, and the first material level indicator 5 detects the material whose inner wall 21 of the centrifuge tube 2 gradually thickens until the liquid level reaches a preset liquid level (at the liquid baffle plate 22), and the feeding is stopped.

In the process, the discharge port 41 of the feeding pipe 4 extends to the inside of the opening 201 in the radial direction, and the discharge port 41 is located at the bottom of the centrifuge tube 2, so that the feeding is performed from the bottom, and the feeding is performed at a medium speed, the solid phase material and the liquid phase material are not separated, and the material can be uniformly spread on the side wall 21 of the centrifuge tube 2.

High-speed material supplement

Referring to fig. 4-5, when the rotation speed of the centrifuge bowl 2 is increased to a second rotation speed (high speed), the fluid infusion tube 7 continuously infuses fluid into the centrifuge bowl 2 through the fluid outlet 71 when the centrifuge bowl 2 is at the second rotation speed and the second level indicator 6 does not reach a preset value, the centrifuge bowl 2 is at the second rotation speed, the solid phase material and the liquid phase material begin to be layered, the solid phase material gradually thickens, the liquid phase material is discharged from the fluid baffle plate 22 to between the centrifuge bowl 2 and the casing 3, and the fluid infusion into the centrifuge bowl 2 is stopped until the solid phase material increases to a preset thickness (increases to the inner side of the fluid baffle plate 22).

High speed washing

Referring to fig. 6, because some impurities exist in the solid-phase material, the surface of the material needs to be cleaned, and the washing pipe 8 is set to input a washing solution for a preset time into the centrifuge cylinder 2 when the centrifuge cylinder 2 is at the second rotation speed and the second material level indicator 6 reaches a preset value, so as to clean the inner layer of the solid-phase material and keep the material pure.

High speed skimming

When skimming is performed, as shown in fig. 7-9, the rotating shaft c92 is driven by the driving member 91 to rotate counterclockwise, the sleeve 93 rotates counterclockwise, when the scraper b94 rotates to contact with the viscous material on the surface of the solid phase material, the scraper b94 continues to rotate inward until the angle of rotating beyond the surface of the solid phase material, when the scraper b94 contacts with the surface of the solid phase material, because the third edge 943 has a contact surface with the solid phase material, the scraper b94 is prevented from continuously intruding inward, and the torsion spring 95 between the rotating shaft c92 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, but not intruding, and the slope guides and scrapes the viscous material, and the viscous material is discharged from the opening 201 of the inner edge of the liquid baffle plate 22.

After skimming, the inner wall of the housing 3 is cleaned.

Low speed discharge

Referring to fig. 10-11, scraper a12 is driven by driving member 11 to move to a first position (not contacting with the stationary material), scrapes the solid material during the movement of scraper a12 from the first position to a second position, and moves axially downward after moving to the second position (close to the inner wall of the centrifuge bowl) to continuously scrape the inner wall material until clean.

The next round of starch separation can then begin.

By combining the embodiment, the utility model is provided with the first material level device for detecting the liquid-phase material in the centrifuge cylinder and the second material level device for detecting the solid-phase material in the centrifuge cylinder, and the thickness of the solid-phase material and the liquid-phase material can be detected after liquid is fed, so that liquid supplementing can be automatically completed, the solid-phase material is continuously accumulated and is detected in real time through the second material level device until the solid-phase material reaches the preset thickness, then the liquid skimming device is moved to the position capable of contacting the surface of the solid-phase material, and a viscous mixture on the surface of the solid-phase material is automatically scraped, so that the solid-phase material after liquid skimming is ensured to be dry powder, the quality of a product is improved, and compared with manual skimming in the prior art, the starch separation efficiency and the quality of a finished product can be greatly improved.

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 utility model. Therefore, the protection scope of the present invention should be determined by the appended claims.

Claims

1. An automatic skimming centrifuge for starch separation, comprising: the method comprises the following steps:

a housing having a cylindrical space therein;

a drive member fixed to the housing;

a discharge opening is arranged below the centrifugal cylinder;

the centrifugal cylinder is characterized in that the shell is also provided with a first material level indicator and a second material level indicator, the first material level indicator extends from the opening of the centrifugal cylinder to the inside of the centrifugal cylinder, the first material level indicator is used for obtaining the distance between a liquid-phase material in the centrifugal cylinder and the side wall, when the first material level indicator reaches a preset value, the centrifugal cylinder is increased from a first rotating speed to a second rotating speed, and the second material level indicator is used for obtaining the distance between a solid-phase material in the centrifugal cylinder and the side wall; the centrifugal cylinder is arranged at a first rotating speed, and the centrifugal cylinder is arranged at a second rotating speed.

2. The automatic skimming centrifuge of claim 1, wherein said skimming means is fixed to said housing, said skimming means comprising a skimming blade and a drive member, said skimming blade being capable of being rotated relative to said housing by said drive means to reciprocate between a first position and a second position in which said skimming blade is adjacent to a solid phase material to liquid phase material interface as detected by said second level detector.

3. The automatic skimming centrifuge according to claim 1, further comprising a discharging scraper for scraping solid material on the inner wall of the centrifuge tube at a third rotation speed of the centrifuge tube to discharge the solid material from the discharge opening and the discharge chute.

4. The automatic skimming starch separating centrifuge according to claim 3, wherein the axis of said discharge scraper is parallel to the axis of said centrifuge tube.

5. The automatic skimming starch separating centrifuge of claim 3, wherein said discharge scraper is configured to include a first position and a second position and to be proximate to an inner wall of said centrifuge bowl when in the second position.

6. The automatic skimming starch separating centrifuge of claim 5 wherein said discharge scraper is axially movable by a drive member in the second position to scrape material off the inner wall.

7. The automatic skimming centrifuge according to claim 1, wherein said first level indicator comprises a first arc blade, a rotating shaft, a torsion spring and a switch member, said first arc blade is fixed to the outer wall of the rotating shaft, said first arc blade is arranged to be pressed by the spring and has a tendency to move towards the inner wall of the centrifuge tube, said first arc blade is pushed to overcome the pressure of the spring when contacting the liquid material in the inner wall of the centrifuge tube and can rotate as the thickness of the liquid material in the inner wall of the centrifuge tube increases, and said switch member is triggered when said first arc blade rotates a predetermined angle.

8. The automatic skimming centrifuge according to claim 1, wherein said second level indicator comprises a second arc blade, a rotating shaft, a torsion spring and a switch member, said second arc blade is fixed to the outer wall of the rotating shaft, said second arc blade is set to be pressed by the spring and has a tendency to move toward the inner wall of the centrifuge tube, said second arc blade is pushed to overcome the spring pressure when contacting with the solid material on the inner wall of the centrifuge tube and can rotate as the thickness of the solid material on the inner wall of the centrifuge tube increases, and when said second arc blade rotates a predetermined angle, the switch member is triggered.

9. The automatic skimming centrifuge of claim 1, further comprising a fluid replenishment tube configured to continuously replenish fluid in the centrifuge bowl when the centrifuge bowl is at the second speed and the second level indicator does not reach a predetermined value;

the washing device further comprises a washing pipe which is set to input washing liquid with preset duration into the centrifugal cylinder when the centrifugal cylinder is at a second rotating speed and the second material level indicator reaches a preset value.

10. The automatic skimming starch separating centrifuge of claim 1, wherein said discharge opening is annular in shape and has an outer diameter less than the diameter of said opening.