WO2021078158A1 - 一种高效节水淀粉浆渣分离筛及分离方法 - Google Patents

一种高效节水淀粉浆渣分离筛及分离方法 Download PDF

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Publication number
WO2021078158A1
WO2021078158A1 PCT/CN2020/122507 CN2020122507W WO2021078158A1 WO 2021078158 A1 WO2021078158 A1 WO 2021078158A1 CN 2020122507 W CN2020122507 W CN 2020122507W WO 2021078158 A1 WO2021078158 A1 WO 2021078158A1
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Prior art keywords
screen
starch
extrusion rod
residue
sieve
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PCT/CN2020/122507
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English (en)
French (fr)
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海子彬
郑西强
匡武
黄志�
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安徽省环境科学研究院
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Publication of WO2021078158A1 publication Critical patent/WO2021078158A1/zh
Priority to US17/374,032 priority Critical patent/US11311910B2/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/18—Drum screens
    • B07B1/22—Revolving drums
    • B07B1/24—Revolving drums with fixed or moving interior agitators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/42—Drive mechanisms, regulating or controlling devices, or balancing devices, specially adapted for screens
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
    • B07B1/50—Cleaning
    • B07B1/55—Cleaning with fluid jets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B2230/00—Specific aspects relating to the whole B07B subclass
    • B07B2230/01—Wet separation

Definitions

  • the invention relates to the technical field of food equipment design and processing, in particular to a high-efficiency water-saving starch slurry residue separation screen and a separation method.
  • Starch processing including potato, cereal, legume starch processing, etc.
  • the screening of pulp residue is an important link. The principle is to separate the free starch particles from the powder residue phase under the action of water flow, so that the starch particles enter the fluid phase to provide conditions for starch extraction and refining; the powder residue enters the solid phase and is collected for other purposes.
  • the difference in particle size between starch granules and powder residue is the principle basis for separating starch and powder residue using a screen.
  • the starch syrup composed of the ground starch granules and powder residue has a high viscosity, and it can be sieved under the action of hydraulic power.
  • the traditional starch slurry residue curved screen separation screen requires a large amount of clean water to wash the starch slurry residue on the screen surface, and the clean water is sieved into the screen at a time, lacking repeated elutriation process, and low water utilization rate.
  • the horizontal high-speed centrifugal cone screen used in the starch production line with a higher degree of automation can use the centrifugal force generated by the high-speed rotation to improve the screening efficiency and reduce the amount of clean water.
  • the high centrifugal force makes the potato residues and other substances attached to the screen need to be backwashed regularly, otherwise the screening efficiency will gradually decrease due to the clogging of the screen.
  • the conical screen is generally of steel structure and screen, which is relatively large in quality and inconvenient to replace and maintain. Drive the cone screen to rotate at a high speed and consume a lot of energy.
  • the purpose of the present invention is to overcome the shortcomings of the prior art, provide a high-efficiency water-saving starch slurry residue separation screen and separation method, and solve the problems of large water consumption and large starch waste water produced by the existing starch slurry residue screening device .
  • a high-efficiency water-saving starch slurry separation screen including a horizontal screen bucket, a screen, a spiral propelling extrusion rod, a rotating drive unit, and a flushing spray pipe;
  • the horizontal screen barrel is provided with a feed inlet on one side, and a slurry outlet and a slag outlet on the other side;
  • the screen is arranged in the horizontal screen barrel and has a cone shape.
  • the cross-sectional diameter of the screen gradually decreases from the side of the feed port to the side of the slag outlet; the screen can go around its center
  • the shaft (coaxial with the screw push rod) rotates;
  • the spirally propelled extrusion rod is arranged in the screen and coaxially arranged with the screen;
  • the spirally propelled extrusion rod includes a spirally propelled extrusion rod shaft and a spiral blade, and the size of the spiral blade is the same as The size of the cross-section of the screen is compatible;
  • the rotation driving unit is used to drive the screen and the screw propelling extrusion rod to rotate in reverse;
  • the flushing spray pipe is used to flush the slurry on the sieve barrel.
  • a spiral propelling brush is installed on the outside of the screen, and the spiral propelling brush can rotate synchronously with the screen.
  • the screw propelling brush is used to push the starch slurry in the sieve bucket to the discharge port.
  • the rotation driving unit is fixed outside the wall of the horizontal screen barrel at the end of the feed inlet, and the rotation driving unit includes two coaxial parallel driving wheels, which are respectively connected to the driven wheels of the spirally advancing extrusion rod through a belt. It is connected with a screen driven wheel sleeved on the screw propulsion extruding rod shaft.
  • the screen is supported by a number of rings with different diameters and a cross bar connecting the rings, and is connected to a bearing sleeved on the screw propulsion extruder shaft through a plurality of spokes, and the bearing is connected by a plurality of spokes.
  • the rotation driving unit drives rotation.
  • the material of the screen is high-strength nylon or steel wire or alloy steel wire, and the pore size of the screen is between 120 mesh and 140 mesh.
  • the spacing of the spiral blades gradually becomes smaller, and the space between the spirally advancing extrusion rod and the screen is continuously reduced, and the wet potato residue is squeezed by the spiral blades, the screen and the screen barrel wall. , Reduce the water content of the discharged potato residue and improve the yield of starch.
  • flushing spray pipe is arranged on the top of the horizontal screen barrel, and the flushing spray pipe is provided with a spray nozzle. The closer to the discharge port, the greater the density of the spray nozzle.
  • the main body of the spiral blade is made of steel and covered with a wear-resistant rubber layer.
  • a complete emptying valve is provided at the bottom of one end of the slurry outlet of the horizontal screen barrel.
  • the level of the slurry outlet is between the highest level and the lowest level of the screen, and the feed inlet is located in the middle and upper part of the horizontal screen barrel.
  • the horizontal screen barrel is installed on the base.
  • the present invention also provides a method for separating high-efficiency water-saving starch slurry residue, using the above-mentioned high-efficiency water-saving starch slurry residue separation screen, and the method specifically includes:
  • the starch slurry enters the screen of the horizontal screen barrel from the feed port, and the screen and the screw propelling extrusion rod rotate in opposite directions under the action of the driving unit;
  • the starch with smaller granules in the starch slurry residue is screened under the screen with the water flow, and the potato residue remains in the screen. Under the combined action of the rolling of the screen and the screw-propelled extrusion rod, the starch is continuously screened under the screen. ;
  • the sifted potato residues are continuously moved toward the slag outlet under the push of the screw push rod; as the horizontal position of the cone-shaped screen surface rises, the potato residues on the screen leave the starch liquid surface and are cleaned
  • the spray pipe leaches the slurry residue on the screen, and further screens the starch particles in the slurry residue under the screen;
  • the potato residue in the screen is squeezed by the shrinking spiral blades and the screen, and the moisture in the potato residue is reduced, and finally discharged from the residue outlet of the sieve barrel; the starch is discharged from the slurry outlet.
  • the complete drain valve is opened to drain all the starch milk and potato residues.
  • the present invention adopts screw propeller blades instead of hydraulic action to make the pulp residue move relative to the screen, which solves the problems of large water consumption in traditional curved screens and high production of starch wastewater.
  • the slurry cleaning water can fully interact with the slurry slag, which overcomes the problem of the traditional screening device.
  • starch milk such as low Baume degree, alleviate the burden of subsequent starch extraction.
  • the screw-propelled extrusion blades and sieve barrels used in the present invention can squeeze the wet potato residue, greatly reduce the moisture content of the potato residue, and reduce the amount of starch lost with the potato residue. Improve the starch extraction rate of sweet potato starch processing.
  • Fig. 1 is a schematic structural diagram of a high-efficiency water-saving starch slurry separation screen according to an embodiment of the present invention.
  • Figure 2 shows a schematic side view of the embodiment (feeding port end).
  • an embodiment of the present invention is a high-efficiency water-saving starch slurry separation screen, which includes a horizontal screen barrel 1, a screen 2, a screw-propelled extrusion rod 3, a rotating drive unit 9, a flushing spray pipe 11, Base
  • the horizontal screen barrel 1 is installed on a base.
  • the horizontal screen barrel 1 has a feed inlet 16 on one side, and a slurry outlet 15 and a slag outlet 14 on the other side.
  • the slurry outlet 15 has a horizontal height between the highest level and the lowest level of the screen 2.
  • the feed inlet 16 is located in the upper middle part of the horizontal screen barrel 1.
  • a complete emptying valve 17 is provided, as shown in FIG. 3.
  • the screen 2 is in the shape of a conical barrel.
  • the screen 2 is supported by a plurality of rings of different diameters and a cross bar connecting the rings.
  • the support ring passes through a plurality of spokes 6 and a screw propelling extrusion rod.
  • the bearing on the upper part is connected, and the bearing is connected to the rotating drive unit 9.
  • the connection between the screen 2 and the screw-propelled extrusion rod 4 can be in various ways, and is not limited to this preferred embodiment. As long as it can achieve the coaxial and reverse rotation of the screen 2 and the screw propelling extrusion rod shaft 4.
  • the diameter of the screen 2 close to the slag outlet 14 is continuously reduced, and a spiral propelling brush 3 is installed on the outside of the screen 2 to push the starch slurry in the horizontal screen barrel 1 to the slurry outlet 15.
  • the slurry on the screen 2 is washed by the flushing spray pipe 11 on the top of the horizontal screen barrel 1.
  • the flushing spray pipe 11 can be fixed on the top of the horizontal sieve barrel 1 by fixing 12, and communicates with the interior of the horizontal sieve barrel 1 through the clear water inlet hole 13.
  • the material of the screen 2 is preferably high-strength nylon or steel wire or alloy steel wire, and the aperture of the screen 2 is between 120 mesh and 140 mesh.
  • the screw-propelled extrusion rod is connected with the rotating drive unit 9 and the rotating direction is opposite to that of the screen 2 to push the potato residue in the screen 2 and squeeze out the residue outlet 14.
  • the screw-propelled extrusion rod 4 is close to the end of the slag outlet 14, the distance between the spiral blades 5 is gradually reduced, and the space between the screw-propelled extrusion rod 4 and the screen 2 is continuously reduced, passing through the spiral blade 5 and the screen 2 and the horizontal
  • the squeezing of the wet potato residue by the wall of the sieve barrel 1 reduces the water content of the discharged potato residue and improves the yield of starch.
  • the main body of the spiral blade 5 is made of steel, preferably covered with a wear-resistant rubber layer.
  • the rotating drive unit 9 is used to drive the screen 2 and the screw-propelled extrusion rod 4, which can be driven in a variety of ways, and is preferably fixed outside the wall of the horizontal screen barrel 1 at the end of the feed inlet 16.
  • An embodiment of the present invention is a method for separating high-efficiency water-saving starch slurry residue, using the above-mentioned high-efficiency water-saving starch slurry residue separating screen, and the method specifically includes:
  • part of the starch with smaller particles in the starch slurry enters under the screen 2 with the water flow, and the remaining slurry remains on the screen 2, and then rolls on the screen 2 and propels the extrusion rod 4 in a spiral. Under the joint action, the starch is continuously sieved to the bottom of the sieve 2.
  • the starch emulsion level keeps rising until the liquid level reaches the level of the slurry outlet 15, and the starch emulsion begins to overflow and discharge.
  • the starch emulsion level is the highest, it can submerge a section of the screen 2 at the end of the feed inlet 16.
  • the starch slurry residue on the submerged screen 2 can be washed repeatedly to separate most of the starch particles from the potato residue.
  • the spiral propelling brush (propeller blade) 3 on the periphery of the screen 2 pushes the starch milk to move to the pulp outlet 15 to prevent the starch milk from depositing.
  • the potato residue on the screen 2 is squeezed by the continuously shrinking spiral blade 5 and the screen 2, and the water in the potato residue is reduced, and is finally discharged from the residue outlet 14 of the screen bucket 1.
  • the invention uses the rotation of the screen and the screw to push the extrusion rod to push the starch mash under the screen and the potato residue on the screen to move to the discharge port (dregs outlet, slurry outlet), and exert mechanical disturbance and hydraulic overflow to wash the screen.
  • the synergy of points Compared with traditional curved mesh screens and high-speed centrifugal screens, the separating screen can save the consumption of clean water and the amount of waste water produced, and the obtained starch milk concentration is improved. At the same time, the water content of the potato residue separated by extrusion through the sieve is low, which is conducive to subsequent resource utilization.

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  • Combined Means For Separation Of Solids (AREA)
  • Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)

Abstract

一种淀粉浆渣分离筛，包括：卧式筛桶（1）、筛网（2）、螺旋推进挤压杆（4）、转动驱动单元（9）以及冲洗喷淋管（11）。卧式筛桶（1）一侧设置进料口（16），另一侧设置出浆口（15）与出渣口（14）；筛网（2）设置在卧式筛桶内，呈锥桶状且截面直径自进料口至出渣口逐渐减小；螺旋推进挤压杆（4）设置在筛网内，包括螺旋推进挤压杆轴和螺旋叶片；转动驱动单元（9）分别驱动筛网（2）、螺旋推进挤压杆（4）反向旋转；冲洗喷淋管（11）用于冲洗卧式筛桶（1）上的浆渣。还提供了使用这种分离筛的分离方法。这种分离筛同时发挥机械扰动与水力溢流淘洗筛分的协同作用，相比于传统的曲网筛和高速离心筛，能节约清水使用量、减少废水产生量，获得的淀粉乳浓度提高；经挤压分离出的薯渣含水率较低，有利后续利用。

Description

一种高效节水淀粉浆渣分离筛及分离方法 技术领域
本发明涉及食品设备设计加工技术领域，特别涉及一种高效节水淀粉浆渣分离筛及分离方法。
背景技术
淀粉加工，包括薯类、谷类、豆类淀粉加工等。淀粉加工技术工艺中，浆渣筛分是一个重要的环节。其原理在于通过在水流作用下将游离出的淀粉颗粒与粉渣相分离，使淀粉颗粒进入流体相，为淀粉的提取和精制提供条件；粉渣则进入固体相，收集后另作他用。
淀粉颗粒与粉渣粒径存在的差异，是利用筛网对淀粉和粉渣进行分离的原理基础。同时，经磨碎后的淀粉颗粒及粉渣构成的淀粉乳浆的黏度较高，需要在水力的作用下，才可以被筛分。
传统的淀粉浆渣曲网分离筛，需要使用大量清水冲洗筛面上的淀粉浆渣，清水一次性过筛进入筛下，缺少反复淘洗过程，水利用率低。
自动化程度较高的淀粉生产线采用的卧式高速离心锥形筛，虽然可以利用高速旋转产生的离心力提高筛分效率，减少清水用量。但较高的离心力使得筛网上附着的薯渣等物质需要定时反向冲洗，否则筛网堵塞导致筛分效率逐渐下降。此外，锥形筛一般是钢质结构及筛网，质量较大，更换维护不方便。驱动锥形筛高速旋转能耗较大。
因此，设计一种机械刷扰动筛网，同时淀粉浆渣可在筛面上反复淘洗的低速转动型筛分设备，对于淀粉加工行业节约用水，减少淀粉加工废水排放具有重要的意义。
发明内容
本发明的目的就是克服现有技术的不足，提供了一种高效节水淀粉浆渣分离筛及分离方法，解决了现有淀粉浆渣筛分装置耗水量大、产生淀粉废水量较大等问题。
本发明采用如下技术方案：
一种高效节水淀粉浆渣分离筛，包括卧式筛桶、筛网、螺旋推进挤压杆、转 动驱动单元、冲洗喷淋管；
所述卧式筛桶一侧设置进料口，另一侧设置出浆口与出渣口；
所述筛网设置在所述卧式筛桶内，呈锥桶状，所述筛网的截面直径自进料口一侧至出渣口一侧逐渐减小；所述筛网能绕其中心轴(与螺旋推进挤压杆同轴)旋转；
所述螺旋推进挤压杆设置在所述筛网内，且与所述筛网同轴设置；所述螺旋推进挤压杆包括螺旋推进挤压杆轴和螺旋叶片，所述螺旋叶片的尺寸与所述筛网的横截面尺寸相适应；
所述转动驱动单元，用于分别驱动所述筛网、所述螺旋推进挤压杆反向旋转；
所述冲洗喷淋管，用于冲洗所述筛桶上的浆渣。
进一步的，所述筛网外侧安装有螺旋推进刷，所述螺旋推进刷能与所述筛网同步旋转。螺旋推进刷用于将筛桶内的淀粉浆推至出料口。
进一步的，所述转动驱动单元固定在进料口端的卧式筛桶桶壁外，所述转动驱动单元包括两个同轴平行驱动轮，通过皮带分别与所述螺旋推进挤压杆的从动轮及套在所述螺旋推进挤压杆轴上的筛网从动轮连接。
进一步的，所述筛网由若干个不同直径的圆环及连接各圆环的横杆支撑，并通过多根辐条与套装在所述螺旋推进挤压杆轴上的轴承连接，所述轴承由所述转动驱动单元驱动旋转。
进一步的，所述筛网材质为高强度尼龙或钢丝或合金钢丝，筛网孔径在120目至140目之间。
进一步的，靠近出料口端，所述螺旋叶片的间距逐渐变小，螺旋推进挤压杆与筛网之间空间不断缩小，通过螺旋叶片与筛网和筛桶壁对湿薯渣的挤压，减少排出薯渣的含水量，提高淀粉的产率。
进一步的，所述冲洗喷淋管设置在所述卧式筛桶的顶部，所述冲洗喷淋管设置喷淋嘴，越靠近出料口，喷淋嘴的密度越大。
进一步的，所述螺旋叶片主体由钢材制成，包覆耐磨橡胶层。
进一步的，所述卧式筛桶出浆口一端的最底部设置完全排空阀门。
进一步的，出浆口的水平高度处于筛网的最高水平位置与最低水平位置之间，进料口位于卧式筛桶的中上部。
进一步的，所述卧式筛桶安装在底座上。
本发明还提供了一种高效节水淀粉浆渣分离方法，使用上述的高效节水淀粉浆渣分离筛，该方法具体包括：
淀粉浆渣从进料口进入卧式筛桶的筛网内，筛网与螺旋推进挤压杆在驱动单元的作用下呈相互反向转动；
淀粉浆渣中颗粒较小的淀粉随水流筛至筛网下，薯渣留在筛网内，在筛网的滚动及螺旋推进挤压杆的共同作用下，不断地将淀粉筛至筛网下；
被筛分的薯渣在螺旋推进挤压杆的推动下，不断朝出渣口运动；随着锥桶状筛网面水平位置的升高，筛网上的薯渣离开淀粉液液面，通过清洗喷淋管对筛网上的浆渣进行淋洗，进一步使浆渣中的淀粉颗粒筛至筛网下；
筛网内的薯渣被不断收缩的螺旋叶片及筛网挤压，薯渣中的水份减少，最终从筛桶的出渣口处被排出；淀粉从出浆口排出。
进一步的，结束筛分工作时，打开完全排空阀门，将全部淀粉乳及薯渣排尽。
本发明的有益效果为：
(1)本发明采用螺旋推进叶片代替水力作用，使浆渣在筛网上作相对运动，解决了传统曲筛用水量大，淀粉废水产生量高等问题。
(2)采用本发明的卧式筛桶溢流淘洗装置，浆渣清洗水可以充分与浆渣作用，克服了传统筛分装置清洗水仅发挥一次过筛作用，清洗用水量大，筛下淀粉乳波美度低等缺点，为后续淀粉提取减轻负担。
(3)本发明采用的螺旋推进挤压叶片与筛桶可以对湿薯渣进行挤压，大幅降低薯渣的含水率，使随薯渣流失的淀粉量降低。提高红薯淀粉加工的淀粉出粉率。
附图说明
图1所示为本发明实施例一种高效节水淀粉浆渣分离筛的结构示意图。
图2所示为实施例的侧视示意图(进料口端)。
图3所示实施例的侧视示意图(出浆口端)。
图中，1.卧式筛桶，2.筛网，3.螺旋推进刷(筛网外桨叶)，4.螺旋推进挤压杆，5.螺旋叶片，6.筛网支撑圆环辐条，7.挤压杆从动轮，8.筛网从动轮，9.转动驱动单元，10.皮带，11.冲洗喷淋管(清水管)，12.固定柱，13.清水进水孔，14. 出渣口，15.出浆口，16.进料口，17.完全排空阀门。
具体实施方式
下文将结合具体附图详细描述本发明具体实施例。应当注意的是，下述实施例中描述的技术特征或者技术特征的组合不应当被认为是孤立的，它们可以被相互组合从而达到更好的技术效果。在下述实施例的附图中，各附图所出现的相同标号代表相同的特征或者部件，可应用于不同实施例中。
如图1所示，本发明实施例一种高效节水淀粉浆渣分离筛，包括卧式筛桶1、筛网2、螺旋推进挤压杆3、转动驱动单元9、冲洗喷淋管11、底座；
优选的，所述卧式筛桶1安装在底座上。所述卧式筛桶1一侧为进料口16，另一侧为出浆口15与出渣口14，出浆口15水平高度处于筛网2的最高水平位置与最低水平位置之间，进料口16位于卧式筛桶1的中上部。在出浆口15的下部，卧式筛桶1的最底部，设置一个完全排空阀门17，如图3所示。
优选的，所述筛网2呈锥桶状，筛网2靠多个不同直径的圆环及连接各圆环的横杆支撑，支撑圆环通过多根辐条6与套在螺旋推进挤压杆上的轴承相连，轴承与转动驱动单元9相连。需要说明的是，筛网2与螺旋推进挤压杆4的连接方式可采用多种方式，并不限定于本优选实施例。只要能达到筛网2与螺旋推进挤压杆轴4同轴反向旋转即可。
所述筛网2靠近出渣口14直径不断缩小，筛网2外侧安装有螺旋推进刷3，可以将卧式筛桶1内淀粉浆推进至出浆口15。通过卧式筛桶1顶部的冲洗喷淋管11对筛网2上的浆渣进行冲洗，越靠近出渣口14，喷淋管嘴的密度越大。冲洗喷淋管11可通过固定住12规定在卧式筛桶1的顶部，通过清水进水孔13与卧式筛桶1内部连通.
所述筛网2材质优选为高强度尼龙或钢丝或合金钢丝，筛网2孔径在120目至140目之间。
所述螺旋推进挤压杆与转动驱动单元9相连，转动方向与筛网2的相反，对筛网2内薯渣推进并挤压出出渣口14。
所述螺旋推进挤压杆4靠近出渣口14端，螺旋叶片5间距逐渐变小，螺旋推进挤压杆4与筛网2之间空间不断缩小，通过螺旋叶片5与筛网2和卧式筛桶1壁对湿薯渣的挤压，减少排出薯渣的含水量，提高淀粉的产率。所述螺旋叶片 5主体由钢材制成，优选包覆耐磨橡胶层。
如图2所示，所述转动驱动单元9用于驱动筛网2和螺旋推进挤压杆4，可采用多种驱动方式，优选为固定在进料口16端卧式筛桶1壁外，有两个同轴平行驱动轮，通过皮带10分别与螺旋推进挤压杆从动轮7及套在螺旋推进挤压杆轴上的筛网从动轮8连接。
本发明实施例一种高效节水淀粉浆渣分离方法，使用上述的高效节水淀粉浆渣分离筛，该方法具体包括：
1、开机，完全排空阀门17关闭，淀粉浆渣从进料口16进入筛桶1，筛网2与螺旋推进挤压杆4在驱动单元9的作用下开始转动。
2、筛网2上，淀粉浆渣中部分颗粒较小的淀粉随水流进入筛网2下，其余浆渣留在筛网2上，进而在筛网2的滚动及螺旋推进挤压杆4的共同作用下，不断地将淀粉筛至筛网2下。
3、筛网2下，淀粉乳液位不断升高，直至液位达到出浆口15的水平位置，淀粉乳开始溢流排出。淀粉乳液位最高时，可淹没进料口16端的一段筛网2。被淹没筛网2上的淀粉浆渣可以反复被淘洗，使大部分淀粉颗粒与薯渣分离。筛网2外围的螺旋推进刷(螺旋桨叶)3推动淀粉乳向出浆口15运动，防止淀粉乳的沉积。
4、被筛分的薯渣，在螺旋推进挤压杆4的推动下，不断朝出渣口运动。随着锥桶状筛网面水平位置的升高，筛网2上的薯渣离开乳液液面，此时通过冲洗喷淋管(清水管)11喷淋口，对筛网2上的浆渣进行淋洗，进一步使浆渣中的淀粉颗粒通过筛网2。
5、筛网2上的薯渣被不断收缩的螺旋叶片5及筛网2挤压，薯渣中的水份减少，最终从筛桶1的出渣口14处被排出。
6、结束筛分工作时，打开完全排空阀门17，待全部淀粉乳及薯渣排尽时，关机。
下表示出了本发明与传统曲网筛的对比结果：
项目 本发明分离筛 传统曲网筛
清洗用水量(吨清水/吨鲜薯) ≤0.8 ≥1.5
淀粉乳波美度(°Bé) ≥6.5 ≤3.5
薯渣含水率(％) ≤89 ≥94
本发明通过筛网和螺旋推进挤压杆的转动，推进筛下淀粉乳浆和筛上薯渣向出料口(出渣口、出浆口)移动，发挥机械扰动与水力溢流淘洗筛分的协同作用。该分离筛相比于传统曲网筛和高速离心筛，能节约清水使用量及废水产生量，所获得的淀粉乳浓度提高。同时，该筛经挤压分离出的薯渣含水率较低，有利于后续资源化利用。
本文虽然已经给出了本发明的几个实施例，但是本领域的技术人员应当理解，在不脱离本发明精神的情况下，可以对本文的实施例进行改变。上述实施例只是示例性的，不应以本文的实施例作为本发明权利范围的限定。

Claims (10)

  1. 一种高效节水淀粉浆渣分离筛，其特征在于，包括卧式筛桶、筛网、螺旋推进挤压杆、转动驱动单元、冲洗喷淋管；
    所述卧式筛桶一侧设置进料口，另一侧设置出浆口与出渣口；
    所述筛网设置在所述卧式筛桶内，呈锥桶状，所述筛网的截面直径自进料口一侧至出渣口一侧逐渐减小；
    所述螺旋推进挤压杆设置在所述筛网内，且与所述筛网同轴设置；所述螺旋推进挤压杆包括螺旋推进挤压杆轴和螺旋叶片，所述螺旋叶片的尺寸与所述筛网的横截面尺寸相适应；
    所述转动驱动单元，用于分别驱动所述筛网、所述螺旋推进挤压杆反向旋转；
    所述冲洗喷淋管，用于冲洗所述筛桶上的浆渣。
  2. 如权利要求1所述的高效节水淀粉浆渣分离筛，其特征在于，所述筛网外侧安装有螺旋推进刷，所述螺旋推进刷能与所述筛网同步旋转。
  3. 如权利要求1所述的高效节水淀粉浆渣分离筛，其特征在于，所述转动驱动单元固定在进料口端的卧式筛桶桶壁外，所述转动驱动单元包括两个同轴平行驱动轮，通过皮带分别与所述螺旋推进挤压杆的从动轮及套在所述螺旋推进挤压杆轴上的筛网从动轮连接。
  4. 如权利要求1所述的高效节水淀粉浆渣分离筛，其特征在于，所述筛网由若干个不同直径的圆环及连接各圆环的横杆支撑，并通过多根辐条与套装在所述螺旋推进挤压杆轴上的轴承连接，所述轴承由所述转动驱动单元驱动旋转。
  5. 如权利要求1-4所述的高效节水淀粉浆渣分离筛，其特征在于，所述筛网材质为高强度尼龙或钢丝或合金钢丝，筛网孔径在120目至140目之间。
  6. 如权利要求1-4任一项所述的高效节水淀粉浆渣分离筛，其特征在于，靠近出料口端，所述螺旋叶片的间距逐渐变小，螺旋推进挤压杆与筛网之间空间不断缩小，通过螺旋叶片与筛网和筛桶壁对湿薯渣的挤压，减少排出薯渣的含水量，提高淀粉的产率。
  7. 如权利要求6所述的高效节水淀粉浆渣分离筛，其特征在于，所述冲洗喷淋管设置在所述卧式筛桶的顶部，所述冲洗喷淋管设置喷淋嘴，越靠近出料口，喷淋嘴的密度越大。
  8. 如权利要求1-4、7任一项所述的高效节水淀粉浆渣分离筛，其特征在于， 所述螺旋叶片主体由钢材制成，包覆耐磨橡胶层。
  9. 如权利要求1所述的高效节水淀粉浆渣分离筛，其特征在于，所述卧式筛桶出浆口一端的最底部设置完全排空阀门。
  10. 一种高效节水淀粉浆渣分离方法，其特征在于，使用如权利要求1-9任一项所述的高效节水淀粉浆渣分离筛，该方法具体包括：
    淀粉浆渣从进料口进入卧式筛桶的筛网内，筛网与螺旋推进挤压杆在驱动单元的作用下呈相互反向转动；
    淀粉浆渣中颗粒较小的淀粉随水流筛至筛网下，薯渣留在筛网内，在筛网的滚动及螺旋推进挤压杆的共同作用下，不断地将淀粉筛至筛网下；
    被筛分的薯渣在螺旋推进挤压杆的推动下，不断朝出渣口运动；随着锥桶状筛网面水平位置的升高，筛网上的薯渣离开淀粉液液面，通过清洗喷淋管对筛网上的浆渣进行淋洗，进一步使浆渣中的淀粉颗粒筛至筛网下；
    筛网内的薯渣被不断收缩的螺旋叶片及筛网挤压，薯渣中的水份减少，最终从筛桶的出渣口处被排出；淀粉从出浆口排出。
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CN110721896A (zh) * 2019-10-24 2020-01-24 安徽省环境科学研究院 一种高效节水淀粉浆渣分离筛及分离方法
CN211436921U (zh) * 2019-10-24 2020-09-08 安徽省环境科学研究院 一种高效节水淀粉浆渣分离筛

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CN115350755B (zh) * 2022-08-12 2023-05-23 江苏快乐电源(涟水)有限公司 铅蓄电池回收利用装置
CN115591754A (zh) * 2022-11-28 2023-01-13 河北振兴化工橡胶有限公司（Cn） 一种磷酸酯生产用过滤系统
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