CN211436921U - Efficient water-saving starch slurry residue separating screen - Google Patents
Efficient water-saving starch slurry residue separating screen Download PDFInfo
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- CN211436921U CN211436921U CN201921799624.9U CN201921799624U CN211436921U CN 211436921 U CN211436921 U CN 211436921U CN 201921799624 U CN201921799624 U CN 201921799624U CN 211436921 U CN211436921 U CN 211436921U
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Abstract
The utility model relates to the technical field of food equipment design and processing, and provides a high-efficiency water-saving starch slurry residue separating sieve which comprises a horizontal sieve barrel, a sieve mesh, a spiral pushing extrusion rod, a rotary driving unit and a flushing spray pipe; one side of the horizontal screen barrel is provided with a feed inlet, and the other side is provided with a slurry outlet and a slag outlet; the screen is arranged in a cone barrel shape, and the diameter of the cross section of the screen is gradually reduced from the feed inlet to the slag outlet; the spiral propelling extrusion rod is arranged in the screen and comprises a spiral propelling extrusion rod shaft and a spiral blade; the rotation driving unit respectively drives the screen and the spiral propelling extrusion rod to rotate reversely; the flushing spray pipe is used for flushing the pulp residue on the sieve barrel. The utility model simultaneously plays the synergistic effect of mechanical disturbance and hydraulic overflow elutriation and screening, and compared with the traditional curved mesh screen and high-speed centrifugal screen, the utility model can save the use amount of clear water and the production amount of waste water, and the concentration of the obtained starch milk is improved; the potato residue squeezed and separated by the sieve has low water content and is beneficial to subsequent utilization.
Description
Technical Field
The utility model relates to the technical field of food equipment design and processing, in particular to a high-efficient water conservation starch slurry-residue separating screen.
Background
Starch processing, including potato, cereal, legume starch processing, and the like. In the technical process of starch processing, the screening of pulp slag is an important link. The principle is that the starch granules are separated from the powder slag under the action of water flow, so that the starch granules enter a fluid phase to provide conditions for extraction and refining of starch; the powder slag enters a solid phase and is collected for other purposes.
The difference between the particle sizes of the starch granules and the powder slag is the basis of the principle of separating the starch from the powder slag by utilizing a screen. Meanwhile, the starch milk slurry formed by the ground starch granules and the powder residues has high viscosity and can be screened only under the action of water force.
The traditional starch pulp residue curved net separating screen needs to use a large amount of clear water to wash the starch pulp residue on the screen surface, the clear water is screened at one time and enters the screen below, the repeated elutriation process is lacked, and the water utilization rate is low.
The horizontal high-speed centrifugal conical screen adopted by the starch production line with higher automation degree can improve the screening efficiency by utilizing the centrifugal force generated by high-speed rotation and reduce the using amount of clear water. But the higher centrifugal force causes substances such as potato dregs and the like attached on the screen to need regular back washing, otherwise, the screen is blocked to cause the gradual reduction of the screening efficiency. In addition, the conical screen is generally of a steel structure and a screen mesh, so that the conical screen is large in mass and inconvenient to replace and maintain. The energy consumption for driving the conical screen to rotate at high speed is large.
Therefore, the low-speed rotating type screening equipment which is designed with the mechanical brush to disturb the screen and simultaneously can repeatedly elutriate starch slurry residues on the screen surface has important significance for saving water and reducing the discharge of starch processing wastewater in the starch processing industry.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the defects of the prior art, providing a high-efficiency water-saving starch slurry-residue separating screen, solving the problems of large water consumption, large starch wastewater generation amount and the like of the existing starch slurry-residue screening device.
The utility model adopts the following technical scheme:
an efficient water-saving starch slurry residue separating screen comprises a horizontal screen barrel, a screen, a spiral pushing extrusion rod, a rotary driving unit, a flushing spray pipe and a base;
a feed inlet is formed in one side of the horizontal screen barrel, and a pulp outlet and a slag outlet are formed in the other side of the horizontal screen barrel; the horizontal height of the pulp outlet is between the highest horizontal position and the lowest horizontal position of the screen, and the feed inlet is positioned at the middle upper part of the horizontal screen barrel;
the screen is arranged in the horizontal screen barrel and is in a cone barrel shape, and the section diameter of the screen is gradually reduced from one side of the feed inlet to one side of the slag outlet; the screen can rotate around the central shaft (coaxial with the spiral propelling extrusion rod);
the spiral propelling extrusion rod is arranged in the screen and is coaxial with the screen; the spiral propelling extrusion rod comprises a spiral propelling extrusion rod shaft and a spiral blade, and the size of the spiral blade is matched with the size of the cross section of the screen;
the rotation driving unit is used for respectively driving the screen and the spiral propelling extrusion rod to rotate reversely;
and the flushing spray pipe is used for flushing the pulp residue on the sieve barrel.
Further, a spiral propelling brush is installed on the outer side of the screen, and the spiral propelling brush can rotate synchronously with the screen. The spiral propelling brush is used for pushing the starch slurry in the sieve barrel to the discharge hole.
Furthermore, the rotation driving unit is fixed outside the wall of the horizontal sieve barrel at the inlet end and comprises two coaxial parallel driving wheels which are respectively connected with a driven wheel of the spiral pushing extrusion rod and a screen mesh driven wheel sleeved on the shaft of the spiral pushing extrusion rod through belts.
Furthermore, the screen is supported by a plurality of rings with different diameters and a cross rod connected with the rings, and is connected with a bearing sleeved on the shaft of the spiral propulsion extrusion rod through a plurality of spokes, and the bearing is driven to rotate by the rotation driving unit.
Furthermore, the screen is made of high-strength nylon or steel wires or alloy steel wires, and the aperture of the screen is 120-140 meshes.
Further, be close to the discharge gate end, helical blade's interval diminishes gradually, and the space between screw propulsion extrusion pole and the screen cloth constantly dwindles, through helical blade and screen cloth and sieve barrel wall to the extrusion of wet potato sediment, reduces the water content of discharge potato sediment, improves the productivity of starch.
Furthermore, the flushing spray pipe is arranged at the top of the horizontal sieve barrel, the flushing spray pipe is provided with a spray nozzle, and the closer to the discharge port, the higher the density of the spray nozzle is.
Further, the spiral blade main body is made of steel and is coated with a wear-resistant rubber layer.
Furthermore, a complete emptying valve is arranged at the bottommost part of one end of the slurry outlet of the horizontal screen barrel.
Further, the horizontal screen barrel is arranged on the base.
The method for using the high-efficiency water-saving starch slurry residue separation sieve comprises the following steps:
starch slurry slag enters a screen mesh of the horizontal screen barrel from the feeding hole, and the screen mesh and the spiral propelling extrusion rod rotate in opposite directions under the action of the driving unit;
the starch with smaller particles in the starch slurry residue is screened to the position below the screen mesh along with water flow, the potato residue is left in the screen mesh, and the starch is continuously screened to the position below the screen mesh under the combined action of the rolling of the screen mesh and the spiral pushing extrusion rod;
the screened potato dregs are pushed by a spiral pushing extrusion rod to continuously move towards a dreg outlet; with the rising of the horizontal position of the conical barrel-shaped screen surface, potato residues on the screen leave the liquid level of the starch solution, and the pulp residues on the screen are leached by the cleaning spray pipe, so that starch particles in the pulp residues are further screened below the screen;
the potato residue in the screen mesh is extruded by the continuously contracted helical blades and the screen mesh, so that the moisture in the potato residue is reduced, and finally the potato residue is discharged from a residue outlet of the screen barrel; the starch is discharged from the starch outlet.
And further, when the screening work is finished, opening a complete emptying valve to completely discharge all starch milk and potato residues.
The utility model has the advantages that:
(1) the utility model discloses a screw propulsion blade replaces hydraulic action, makes thick liquid sediment make relative motion on the screen cloth, and it is big to have solved traditional bent sieve water consumption, and starch waste water production height scheduling problem.
(2) Adopt the utility model discloses a device is eluriated in horizontal sieve bucket overflow, thick liquid sediment wash water can be abundant with thick liquid sediment effect, overcome traditional screening plant and washed water and only play once sieving effect, the washing water consumption is big, and starch milk baume degree low grade shortcoming under the sieve draws and alleviates the burden for follow-up starch.
(3) The utility model discloses a spiral propulsion extrusion blade and sieve bucket can extrude wet potato sediment, reduce the moisture content of potato sediment by a wide margin, make the starch volume along with potato sediment loss reduce. The starch yield of sweet potato starch processing is improved.
Drawings
Fig. 1 is a schematic structural diagram of a high-efficiency water-saving starch slurry residue separating screen according to an embodiment of the present invention.
Fig. 2 shows a schematic side view (feed port end) of an embodiment.
Fig. 3 shows a schematic side view of the embodiment (grout outlet end).
In the figure, 1, a horizontal screen barrel, 2, a screen, 3, a spiral propelling brush (a paddle outside the screen), 4, a spiral propelling extrusion rod, 5, a spiral blade, 6, a screen supporting circular ring spoke, 7, an extrusion rod driven wheel, 8, a screen driven wheel, 9, a rotation driving unit, 10, a belt, 11, a flushing spray pipe (a clear water pipe), 12, a fixed column, 13, a clear water inlet hole, 14, a slag outlet, 15, a pulp outlet, 16, a feed inlet and 17 are provided with a complete emptying valve.
Detailed Description
Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that technical features or combinations of technical features described in the following embodiments should not be considered as being isolated, and they may be combined with each other to achieve better technical effects. In the drawings of the embodiments described below, the same reference numerals appearing in the respective drawings denote the same features or components, and may be applied to different embodiments.
As shown in fig. 1, the high-efficiency water-saving starch slurry and residue separating sieve of the embodiment of the utility model comprises a horizontal sieve barrel 1, a sieve mesh 2, a spiral pushing extrusion rod 3, a rotary driving unit 9, a flushing spray pipe 11 and a base;
preferably, the horizontal screen bucket 1 is installed on a base. One side of the horizontal screen barrel 1 is provided with a feeding hole 16, the other side of the horizontal screen barrel is provided with a slurry outlet 15 and a slag outlet 14, the horizontal height of the slurry outlet 15 is between the highest horizontal position and the lowest horizontal position of the screen 2, and the feeding hole 16 is positioned at the middle upper part of the horizontal screen barrel 1. At the lower part of the outlet 15, the lowest part of the horizontal screen bucket 1, a complete emptying valve 17 is arranged, as shown in fig. 3.
Preferably, the screen 2 is in a cone barrel shape, the screen 2 is supported by a plurality of rings with different diameters and cross rods for connecting the rings, the supporting rings are connected with bearings sleeved on the spiral propelling extrusion rods through a plurality of spokes 6, and the bearings are connected with the rotation driving unit 9. The connection between the screen 2 and the screw-pushing ram 4 may be made in various ways, and is not limited to the preferred embodiment. As long as the coaxial and reverse rotation of the screen 2 and the screw propulsion extrusion rod shaft 4 can be achieved.
The diameter of the screen 2 close to the slag hole 14 is continuously reduced, the spiral propelling brush 3 is arranged on the outer side of the screen 2, and starch slurry in the horizontal screen barrel 1 can be propelled to the slurry outlet 15. The pulp slag on the screen mesh 2 is washed by a washing spray pipe 11 at the top of the horizontal screen barrel 1, and the closer to the slag outlet 14, the higher the density of the spray pipe nozzle. The washing spray pipe 11 can be fixed at the top of the horizontal screen barrel 1 through a fixing part 12 and is communicated with the inside of the horizontal screen barrel 1 through a clean water inlet hole 13.
The material of the screen 2 is preferably high-strength nylon or steel wires or alloy steel wires, and the aperture of the screen 2 is 120-140 meshes.
The screw propulsion extrusion rod is connected with a rotation driving unit 9, the rotation direction is opposite to that of the screen 2, and the screw propulsion extrusion rod propels and extrudes the potato dregs in the screen 2 to form a dreg outlet 14.
The spiral impels the extrusion pole 4 to be close to 14 ends in slag notch, and 5 intervals of helical blade diminish gradually, and the space constantly dwindles between spiral impels extrusion pole 4 and the screen cloth 2, through helical blade 5 and screen cloth 2 and the extrusion of horizontal sieve bucket 1 wall to wet potato sediment, reduces the water content of discharge potato sediment, improves the productivity of starch. The main body of the helical blade 5 is made of steel and is preferably coated with a wear-resistant rubber layer.
As shown in fig. 2, the rotary driving unit 9 is used for driving the screen 2 and the screw pushing extrusion rod 4, and can adopt various driving modes, preferably two coaxial parallel driving wheels are fixed outside the wall of the horizontal screen barrel 1 at the end of the feeding port 16, and are respectively connected with a screw pushing extrusion rod driven wheel 7 and a screen driven wheel 8 sleeved on the shaft of the screw pushing extrusion rod through a belt 10.
The method using the high-efficiency water-saving starch slurry residue separating screen comprises the following steps:
1. and starting the machine, closing the complete emptying valve 17, feeding starch slurry residues into the sieve barrel 1 from the feeding hole 16, and starting the rotation of the sieve mesh 2 and the spiral propelling extrusion rod 4 under the action of the driving unit 9.
2. On the screen 2, part of starch with smaller particles in starch slurry slag enters the screen 2 along with water flow, the rest of the slurry slag is remained on the screen 2, and the starch is continuously screened below the screen 2 under the combined action of the rolling of the screen 2 and the spiral propelling extrusion rod 4.
3. Under the screen 2, the liquid level of the starch milk is continuously raised until the liquid level reaches the horizontal position of the starch outlet 15, and the starch milk starts to overflow and is discharged. When the level of the starch milk is the highest, a section of the screen 2 at the end of the feed inlet 16 can be submerged. The starch slurry residue on the submerged screen 2 can be repeatedly elutriated to separate most starch particles from the potato residue. The spiral propelling brush (propeller blade) 3 at the periphery of the screen 2 pushes the starch milk to move towards the starch outlet 15, so that the starch milk is prevented from depositing.
4. The screened potato dregs are pushed by the screw pushing extrusion rod 4 to move towards the slag outlet continuously. Along with the rising of the horizontal position of the conical barrel-shaped screen surface, the potato residues on the screen 2 leave the liquid level of the emulsion, and at the moment, the pulp residues on the screen 2 are leached through a spraying opening of a flushing spraying pipe (clear water pipe) 11, so that starch particles in the pulp residues further pass through the screen 2.
5. The potato residue on the screen 2 is extruded by the continuously contracted helical blades 5 and the screen 2, the moisture in the potato residue is reduced, and finally the potato residue is discharged from a residue outlet 14 of the screen barrel 1.
6. When the screening work is finished, the complete emptying valve 17 is opened, and the machine is shut down when all the starch milk and the potato residues are drained.
The following table shows the use comparison result of the utility model with the traditional curved mesh screen:
| item | The utility model discloses separating screen | Traditional curved mesh screen |
| Water consumption for cleaning (ton clean water/ton fresh potato) | ≤0.8 | ≥1.5 |
| Baume degree (° Bee) | ≥6.5 | ≤3.5 |
| Moisture content of potato residue (%) | ≤89 | ≥94 |
The utility model discloses a rotation of screen cloth and spiral propulsion extrusion pole impels starch milk under the screen cloth and potato dregs on the screen to remove to discharge gate (slag notch, play thick liquid mouth), and the synergistic action of screening is eluriated with the water conservancy overflow in performance mechanical disturbance. Compared with the traditional curved mesh sieve and high-speed centrifugal sieve, the separating sieve can save the use amount of clear water and the generation amount of waste water, and the concentration of the obtained starch milk is improved. Meanwhile, the potato residue separated by the screen through extrusion has low water content, and is beneficial to subsequent resource utilization.
While several embodiments of the present invention have been presented herein, it will be appreciated by those skilled in the art that changes can be made to the embodiments herein without departing from the spirit of the invention. The above-described embodiments are merely exemplary and should not be taken as limiting the scope of the invention.
Claims (9)
1. A high-efficiency water-saving starch slurry residue separating sieve is characterized by comprising a horizontal sieve barrel, a sieve mesh, a spiral propelling extrusion rod, a rotary driving unit, a flushing spray pipe and a base;
the horizontal screen barrel is arranged on the base; a feed inlet is formed in one side of the horizontal screen barrel, and a pulp outlet and a slag outlet are formed in the other side of the horizontal screen barrel; the horizontal height of the pulp outlet is between the highest horizontal position and the lowest horizontal position of the screen, and the feed inlet is positioned at the middle upper part of the horizontal screen barrel;
the screen is arranged in the horizontal screen barrel and is in a cone barrel shape, and the section diameter of the screen is gradually reduced from one side of the feed inlet to one side of the slag outlet;
the spiral propelling extrusion rod is arranged in the screen and is coaxial with the screen; the spiral propelling extrusion rod comprises a spiral propelling extrusion rod shaft and a spiral blade, and the size of the spiral blade is matched with the size of the cross section of the screen;
the rotation driving unit is used for respectively driving the screen and the spiral propelling extrusion rod to rotate reversely;
and the flushing spray pipe is used for flushing the pulp residue on the sieve barrel.
2. The high-efficiency water-saving starch slurry-residue separating screen as claimed in claim 1, wherein a spiral propelling brush is mounted on the outer side of the screen mesh, and the spiral propelling brush can rotate synchronously with the screen mesh.
3. The high-efficiency water-saving starch slurry-residue separating screen as claimed in claim 1, wherein the rotary driving unit is fixed outside the horizontal screen barrel wall at the feed inlet end, and the rotary driving unit comprises two coaxial parallel driving wheels which are respectively connected with the driven wheel of the screw propulsion extrusion rod and the screen mesh driven wheel sleeved on the shaft of the screw propulsion extrusion rod through belts.
4. The efficient water-saving starch slurry-residue separating screen as claimed in claim 1, wherein the screen is supported by a plurality of rings with different diameters and cross bars connecting the rings, and is connected with a bearing sleeved on the shaft of the screw propulsion extrusion rod through a plurality of spokes, and the bearing is driven to rotate by the rotation driving unit.
5. The efficient water-saving starch slurry residue separation sieve of any one of claims 1 to 4, wherein the sieve mesh is made of high-strength nylon or steel wire or alloy steel wire, and the aperture of the sieve mesh is between 120 meshes and 140 meshes.
6. The high-efficiency water-saving starch slurry residue separating screen as claimed in any one of claims 1 to 4, wherein the distance between the helical blades is gradually reduced near the discharge port end, and the space between the helical propelling extrusion rod and the screen mesh is continuously reduced.
7. The high-efficiency water-saving starch slurry-residue separation sieve of claim 6, wherein the flushing spray pipe is arranged at the top of the horizontal sieve barrel, the flushing spray pipe is provided with spray nozzles, and the closer to the discharge port, the higher the density of the spray nozzles is.
8. The efficient water-saving starch slurry residue separation sieve of any one of claims 1-4 and 7, wherein the spiral blade body is made of steel and is coated with a wear-resistant rubber layer.
9. The high-efficiency water-saving starch slurry-residue separating screen as claimed in claim 1, wherein a complete emptying valve is arranged at the bottommost part of one end of the slurry outlet of the horizontal screen barrel.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921799624.9U CN211436921U (en) | 2019-10-24 | 2019-10-24 | Efficient water-saving starch slurry residue separating screen |
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| CN201921799624.9U CN211436921U (en) | 2019-10-24 | 2019-10-24 | Efficient water-saving starch slurry residue separating screen |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021078158A1 (en) * | 2019-10-24 | 2021-04-29 | 安徽省环境科学研究院 | Efficient water-saving starch slurry and residue separation sieve and separating method |
| CN115069749A (en) * | 2022-06-01 | 2022-09-20 | 中科信宇环境科技(宁波)有限公司 | High-efficiency municipal greening soil treatment device and treatment method thereof |
-
2019
- 2019-10-24 CN CN201921799624.9U patent/CN211436921U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021078158A1 (en) * | 2019-10-24 | 2021-04-29 | 安徽省环境科学研究院 | Efficient water-saving starch slurry and residue separation sieve and separating method |
| US11311910B2 (en) | 2019-10-24 | 2022-04-26 | Anhui Academy of Environmental Science Research | High-efficiency water-saving separation screen for starch slurry and residue and separation method |
| CN115069749A (en) * | 2022-06-01 | 2022-09-20 | 中科信宇环境科技(宁波)有限公司 | High-efficiency municipal greening soil treatment device and treatment method thereof |
| CN115069749B (en) * | 2022-06-01 | 2023-11-14 | 中科信宇环境科技(宁波)有限公司 | Efficient municipal greening soil treatment device and treatment method thereof |
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