CN112090156A - Filtering device for corn starch sugar production and using method - Google Patents
Filtering device for corn starch sugar production and using method Download PDFInfo
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- CN112090156A CN112090156A CN202010992278.7A CN202010992278A CN112090156A CN 112090156 A CN112090156 A CN 112090156A CN 202010992278 A CN202010992278 A CN 202010992278A CN 112090156 A CN112090156 A CN 112090156A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D36/00—Filter circuits or combinations of filters with other separating devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D36/00—Filter circuits or combinations of filters with other separating devices
- B01D36/003—Filters in combination with devices for the removal of liquids
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D36/00—Filter circuits or combinations of filters with other separating devices
- B01D36/003—Filters in combination with devices for the removal of liquids
- B01D36/006—Purge means
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- C—CHEMISTRY; METALLURGY
- C13—SUGAR INDUSTRY
- C13B—PRODUCTION OF SUCROSE; APPARATUS SPECIALLY ADAPTED THEREFOR
- C13B20/00—Purification of sugar juices
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- C—CHEMISTRY; METALLURGY
- C13—SUGAR INDUSTRY
- C13B—PRODUCTION OF SUCROSE; APPARATUS SPECIALLY ADAPTED THEREFOR
- C13B20/00—Purification of sugar juices
- C13B20/12—Purification of sugar juices using adsorption agents, e.g. active carbon
- C13B20/123—Inorganic agents, e.g. active carbon
Abstract
The invention discloses a filtering device for producing corn starch sugar and a using method thereof, wherein the filtering device comprises a stirring tank, a first filter, a second filter and an activated carbon filter which are sequentially communicated; at least two conical filter screens are arranged in the first filter from top to bottom; the conical filter screens can be detachably arranged in the first filter; a metal filter cylinder is rotatably arranged in the second filter; the metal filter cylinder is detachable; the bottom end of the liquid inlet pipe C extends into the metal filter cylinder; in the activated carbon filter, at least two filtering layers are arranged from top to bottom. The invention has simple structure and convenient operation; the filter cone net, the metal filter cylinder and the active carbon are convenient to replace, the influence on the production efficiency is small, the efficient filtering efficiency can be kept in the filtering process, and the problem of low filtering efficiency caused by the blockage of the filter cone net or the metal filter cylinder is reduced.
Description
Technical Field
The invention belongs to the technical field of starch sugar production, and particularly relates to a filtering device for corn starch sugar production and a using method thereof.
Background
The starch sugar is prepared from grain containing starch, potatoes and the like serving as raw materials by an acid method, an acid enzyme method or an enzyme method, and comprises maltose, glucose, high fructose syrup and the like, which are collectively called starch sugar. Corn starch sugar is produced by using corn as a raw material.
In the production process of the corn starch sugar, the finished product of the corn starch sugar is obtained by the processes of raw material impurity removal, crushing, size mixing, acidification, enzymolysis liquefaction, saccharification, filtration, purification, drying and the like. Because raw materials, auxiliary materials and production water all contain a certain amount of impurities, and impurities such as organic acid, pigments and the like can be generated due to the complex and decomposition reaction of glucose in the hydrolysis process, the impurities contained in saccharified sugar liquor can be filtered to obtain pure syrup, and the pure syrup can be purified and dried to obtain a finished product. The filtration of syrup is carried out to often use plate and frame filter press among the prior art, but in actual use, the discharge opening blocks up easily, destroys the continuity of work, under the work of lasting big intensity, various troubles appear easily, and need often artifical clearance filter residue, and it is long to consume time.
Disclosure of Invention
The invention aims to overcome the technical problems in the prior art and provides a filtering device for producing corn starch sugar and a using method thereof.
In order to achieve the purpose, the invention is implemented according to the following technical scheme:
a filtering device for producing corn starch sugar comprises a stirring tank, a first filter, a second filter and an activated carbon filter which are sequentially communicated; a stirring paddle is arranged in the stirring tank, and the stirring tank is provided with a feeding pipe, a liquid inlet pipe A and a liquid outlet pipe A; the top of the first filter is provided with a liquid inlet pipe B, and the bottom of the first filter is provided with a liquid outlet pipe B; the top of the second filter is provided with a liquid inlet pipe C, and the bottom of the right side of the second filter is provided with a liquid discharge pipe C; the top of the activated carbon filter is provided with a liquid inlet pipe D, and the bottom of the activated carbon filter is provided with a liquid outlet pipe D;
at least two conical filter screens are arranged in the first filter from top to bottom; the conical filter screens can be detachably arranged in the first filter;
a metal filter cylinder is rotatably arranged in the second filter; the metal filter cylinder is detachable; the bottom end of the liquid inlet pipe C extends into the metal filter cylinder;
in the activated carbon filter, at least two filtering layers are arranged from top to bottom; active carbon is filled in the filter layer; the left side of the filter layer is lower than the right side and is obliquely arranged; the right side of the filter layer is provided with a feeding flange, and the left side is provided with a discharging flange; a back flushing inlet pipe is arranged below the right side of the activated carbon filter, and a back flushing discharge pipe is arranged on the left side of the activated carbon filter;
the liquid discharge pipe A is communicated with the liquid inlet pipe B through a pipeline; the liquid inlet pipe C is provided with a rotary joint, and the liquid outlet pipe B is communicated with the rotary joint through a pipeline; the liquid discharge pipe C is communicated with the liquid inlet pipe D through a pipeline.
Preferably, the opening of the conical filter screen is upwards arranged in the first filter, and the aperture of the filtering holes of the conical filter screen from top to bottom is reduced in sequence; the upper end face of the conical filter screen is welded with a support ring.
Preferably, the first filter comprises a liquid inlet flange cover, a filter screen flange pipe and a liquid discharge flange cover which are sequentially connected through flanges; the liquid inlet flange cover, the filter screen flange pipe and the liquid discharge flange cover are coaxial and have the same inner diameter; the number of the filter screen flange pipes is the same as that of the conical filter screens; the liquid inlet flange cover and the liquid discharge flange cover have the same structure and are symmetrically positioned at the upper end and the lower end of the first filter; the upper end surface of the liquid inlet flange cover is closed, and the center of the liquid inlet flange cover is fixedly communicated with a liquid inlet pipe B; the lower end surface of the liquid discharge flange cover is closed, and the center of the liquid discharge flange cover is fixedly communicated with a liquid discharge pipe B.
Preferably, the upper end surface of the filter screen flange pipe is provided with a supporting step; the size and the height of the supporting step are matched with the supporting ring; the outer diameter of the support ring is larger than the inner diameter of the filter screen flange pipe; the outer diameter of the upper end surface of the conical filter screen is smaller than the inner diameter of the flange pipe of the filter screen; the support ring is placed in the support step; the conical filter screen at the top is pressed in the supporting step by the lower end face of the liquid inlet flange cover, and the rest conical filter screens are pressed in the supporting step by the lower end face of the filter screen flange pipe above the supporting step.
Preferably, the metal filter cartridge comprises a filter cartridge body, an upper bottom and a lower bottom; the upper bottom and the lower bottom are respectively fixed on the upper end surface and the lower end surface of the filter cylinder body; the upper bottom and the lower bottom are both disc-shaped with notches at the edges; the center of the upper bottom is provided with a through hole matched with the liquid inlet pipe C; the filter cartridge body is provided with filter holes.
Preferably, the second filter comprises an upper cover body, a lower tank body, a motor, an upper gland, a lower gland and a rotating shaft, wherein the upper gland, the lower gland and the rotating shaft are arranged in the lower tank body; the upper cover body is connected with the lower tank body through a flange; the upper gland and the lower gland are both provided with side walls; the side wall of the upper gland is provided with a bulge matched with the notch of the upper bottom; the side wall of the lower gland is provided with a bulge matched with the notch of the lower bottom;
the liquid inlet pipe C penetrates through the upper cover body and is rotationally connected with the upper cover body; the liquid inlet pipe C penetrates through the upper gland and is fixedly connected with the upper gland; the bottom surface of the lower gland is fixedly provided with a rotating shaft; the rotating shaft penetrates through the bottom of the lower tank body and is driven by a motor;
the opening of the upper gland is downward, and the opening of the lower gland is upward; the upper pressing cover and the lower pressing cover clamp the metal filter cylinder; the motor drives the rotating shaft to drive the lower pressing cover to rotate; the lower gland drives the metal filter cylinder, the upper gland and the liquid inlet pipe C to rotate; the bottom end of the liquid inlet pipe C extends into the metal filter cylinder; an elastic gasket is arranged between the upper gland and the upper bottom.
Preferably, the number of backflushing pipes is the same as the number of filter layers, and one backflushing pipe is arranged above the left side of each filter layer.
A use method of a filtering device for producing corn starch sugar comprises the following steps:
s1, feeding the saccharified syrup into a stirring tank through a liquid inlet pipe A; putting the filter aid into a stirring tank through a feeding pipe, and uniformly stirring the syrup and the filter aid to obtain a mixed solution;
s2, discharging the mixed liquor from the liquor discharge pipe A, feeding the mixed liquor into a second filter from the liquor inlet pipe B, and filtering the mixed liquor by a conical filter screen of the second filter to obtain primary filtrate;
s3, discharging the primary filtrate from the liquid discharge pipe B, entering the metal filter cylinder from the liquid inlet pipe C, and filtering by the metal filter cylinder to obtain secondary filtrate;
and S4, discharging the secondary filtrate from the liquid discharge pipe C, feeding the secondary filtrate into the activated carbon filter from the liquid inlet pipe D, filtering by the filter layer to obtain a tertiary filtrate, and finishing the filtering.
Preferably, the method also comprises a method for cleaning or replacing the activated carbon in the activated carbon filter;
the cleaning method of the activated carbon in the activated carbon filter comprises the following steps:
after the liquid in the activated carbon filter is emptied, the liquid inlet pipe D and the liquid outlet pipe D are closed, cleaning liquid is flushed from the backflushing inlet pipe, the activated carbon in the filter layer is cleaned, and the cleaned liquid is discharged from the backflushing discharge pipe;
the method for replacing the activated carbon in the activated carbon filter comprises the following steps:
after the liquid in the activated carbon filter is emptied, the discharging flange is opened, and the activated carbon in the filter layer is discharged under the action of gravity; then opening a feeding flange, and flushing residual activated carbon in the filter layer; after cleaning, the material discharging flange is closed, and new active carbon is filled into the filter layer from the material feeding flange.
The invention has the following action principle:
the invention uses the first filter, the second filter and the activated carbon filter to replace a plate frame filter. Firstly, a filter aid is put into the syrup, so that the filtration is easier; and then the liquid is filtered gradually by a first filter, a second filter and an active carbon filter to finally obtain the filtered liquid.
The conical filter screen in the first filter is convenient to replace. And filter residues can be firstly accumulated at the bottom of the conical filter screens in the using process, the service time of each conical filter screen is prolonged, and the conical filter screens are cleaned and replaced at regular intervals.
The second filter adopts a metal filter cylinder, and the metal filter cylinder throws out the liquid through centrifugal force generated by rotation of the metal filter cylinder, so that the filtering is rapid. And the metal filter screen is detachable, can change after using for a certain time.
The activated carbon filter filters by using activated carbon in the filter layer, the activated carbon can be backwashed or replaced, the activated carbon can be replaced or cleaned regularly according to the use requirement, and the activated carbon filter is simple in operation.
The three filtering devices of the invention mainly relate to that all parts for filtering are convenient to disassemble, can be reused after being rapidly disassembled and replaced, and has high replacement efficiency and small influence on production efficiency. And for the replacement of the filtering conical net, the metal filter cylinder and the active carbon, the high-efficiency filtering efficiency can be kept in the filtering process, and the problem of low filtering efficiency caused by the blockage of the filter screen or the filter cylinder is reduced.
The invention achieves the following beneficial effects:
the invention has simple structure and convenient operation; the filter cone net, the metal filter cylinder and the active carbon are convenient to replace, the influence on the production efficiency is small, the efficient filtering efficiency can be kept in the filtering process, and the problem of low filtering efficiency caused by the blockage of the filter cone net or the metal filter cylinder is reduced.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the first filter of FIG. 1;
FIG. 3 is a schematic view of the second filter of FIG. 1;
fig. 4 is a cross-sectional view taken along line E-E of fig. 2.
In the figure: 1. a stirring tank; 2. a first filter; 3. a second filter; 4. an activated carbon filter; 5. a feed pipe; 6. a liquid inlet pipe A; 7. a liquid discharge pipe A; 8. a liquid inlet pipe B; 9. a liquid discharge pipe B; 10. a liquid inlet pipe C; 11. a liquid discharge pipe C; 12. a liquid inlet pipe D; 13. a liquid discharge pipe D; 14. a conical filter screen 15 and a support ring; 16. a liquid inlet flange cover; 17. a filter screen flange pipe; 18. a drain flange cover; 19. supporting a step; 20. a metal filter cartridge; 21. a filter cartridge body; 22. a bottom is arranged; 23. a lower bottom; 24. a notch; 25. an upper cover body; 26. a tank body is arranged; 27. a motor; 28. a gland is arranged; 29. a lower gland; 30. a rotating shaft; 31. a protrusion; 32. a filter layer; 33. activated carbon; 34. a feed flange; 35. a discharge flange; 36. back flushing the pipe; 37. back flushing the pipe; 38. a rotary joint; 39. an elastic pad.
Detailed Description
The invention will be further described with reference to the drawings and specific embodiments, which are illustrative of the invention and are not to be construed as limiting the invention.
Example 1
As shown in fig. 1 to 4, the filtering device for producing corn starch sugar comprises a stirring tank 1, a first filter 2, a second filter 3 and an activated carbon filter 4 which are communicated in sequence; a stirring paddle is arranged in the stirring tank 1, and a feeding pipe 5, a liquid inlet pipe A6 and a liquid outlet pipe A7 are arranged on the stirring tank 1; the top of the first filter 2 is provided with a liquid inlet pipe B8 and the bottom is provided with a liquid outlet pipe B9; the top of the second filter 3 is provided with a liquid inlet pipe C10, and the bottom of the right side is provided with a liquid outlet pipe C11; the top of the activated carbon filter 4 is provided with a liquid inlet pipe D12, and the bottom is provided with a liquid outlet pipe D13.
In the first filter 2, two conical screens 14 are installed from top to bottom. The opening of the conical filter screen 14 is upwards arranged in the first filter 2, and the aperture of the filtering holes of the conical filter screen 14 from top to bottom is sequentially reduced; the upper end face of the conical filter screen 14 is welded with a support ring 15.
The first filter 2 comprises a liquid inlet flange cover 16, two filter screen flange pipes 17 and a liquid discharge flange cover 18 which are sequentially connected through flanges; the liquid inlet flange cover 16, the two filter screen flange pipes 17 and the liquid discharge flange cover 18 are coaxial and have the same inner diameter; the liquid inlet flange cover 16 and the liquid discharge flange cover 18 have the same structure and are symmetrically positioned at the upper end and the lower end of the first filter 2; the upper end surface of the liquid inlet flange cover 16 is closed, and the center of the liquid inlet flange cover is fixedly communicated with a liquid inlet pipe B8; the lower end surface of the drainage flange cover 18 is closed, and a drainage pipe B8 is fixedly communicated with the center.
The upper end surface of the filter screen flange pipe 17 is provided with a supporting step 19; the size and height of the supporting step 19 are matched with those of the supporting ring 15; the outer diameter of the support ring 15 is larger than the inner diameter of the filter screen flange pipe 17; the outer diameter of the upper end surface of the conical filter screen 14 is smaller than the inner diameter of the filter screen flange pipe 17; the support ring 15 is placed in the support step 19; the uppermost conical screen 14 is pressed into the support step 19 by the lower end face of the feed flange cover 16, and the remaining conical screens 14 are pressed into the support step 19 by the lower end face of the screen flange pipe 17 above the support step.
A metal filter cartridge 20 is rotatably mounted in the second filter 3; the metal filter cartridge 20 is detachable; the bottom end of the liquid inlet pipe C10 extends into the metal filter cartridge 20. The metal filter cartridge 20 comprises a filter cartridge body 21, an upper bottom 22 and a lower bottom 23; the upper bottom 22 and the lower bottom 23 are respectively fixed on the upper end surface and the lower end surface of the filter cartridge body 21; the upper bottom 22 and the lower bottom 23 are both disc-shaped with a gap 24 at the edge; the center of the upper bottom 22 is provided with a through hole matched with the liquid inlet pipe C10; the filter cartridge body 21 has filter holes.
The second filter 3 comprises an upper cover 25, a lower tank 26, a motor 27, an upper gland 28, a lower gland 29 and a rotating shaft 30, wherein the upper gland 28, the lower gland 29 and the rotating shaft 30 are arranged in the lower tank 26; the upper cover body 25 is connected with the lower tank body 26 through a flange; the upper gland 28 and the lower gland 29 both have side walls; the side wall of the upper gland 28 is provided with a bulge 31 matched with the notch of the upper bottom 22; the side wall of the lower gland 28 is provided with a projection 31 which is matched with the notch 24 of the lower bottom 23.
The liquid inlet pipe C10 penetrates through the upper cover body 25 and is rotationally connected with the upper cover body 25; the liquid inlet pipe C10 penetrates through the upper gland 28 and is fixedly connected with the upper gland 28; a rotating shaft 30 is fixedly arranged on the bottom surface of the lower gland 29; the rotating shaft 30 penetrates through the bottom of the lower tank 26 and is driven by the motor 27.
The upper gland 28 opens downwards and the lower gland 29 opens upwards; the upper pressing cover 28 and the lower pressing cover 29 clamp the metal filter cylinder 20; the motor 27 drives the rotating shaft 30 to drive the lower gland 29 to rotate; the lower gland 29 drives the metal filter cylinder 20, the upper gland 28 and the liquid inlet pipe C10 to rotate; the bottom end of the liquid inlet pipe C10 extends into the metal filter cartridge 20. An elastic gasket 39 is arranged between the upper gland 28 and the upper bottom 22.
In the activated carbon filter 4, two filtering layers 32 are arranged from top to bottom; the filter layer 32 is filled with active carbon 33; the left side of the filter layer 32 is lower than the right side and is obliquely arranged; the right side of the filter layer 32 is provided with a feeding flange 34, and the left side is provided with a discharging flange 35; the back flush inlet pipe 36 is arranged below the right side of the activated carbon filter 4, and the back flush drain pipe 37 is arranged above the left side of each filter layer 32.
The liquid discharge pipe A7 is communicated with the liquid inlet pipe B8 through a pipeline; the liquid inlet pipe C10 is provided with a rotary joint 38, and the liquid outlet pipe B9 is communicated with the rotary joint 38 through a pipeline; the liquid discharge pipe C11 is communicated with the liquid inlet pipe D12 through a pipeline.
Example 2
A use method of a filtering device for producing corn starch sugar comprises the following steps:
s1, feeding the saccharified syrup into a stirring tank through a liquid inlet pipe A; putting the filter aid into a stirring tank through a feeding pipe, and uniformly stirring the syrup and the filter aid to obtain a mixed solution;
s2, discharging the mixed liquor from the liquor discharge pipe A, feeding the mixed liquor into a second filter from the liquor inlet pipe B, and filtering the mixed liquor by a conical filter screen of the second filter to obtain primary filtrate;
s3, discharging the primary filtrate from the liquid discharge pipe B, entering the metal filter cylinder from the liquid inlet pipe C, and filtering by the metal filter cylinder to obtain secondary filtrate;
and S4, discharging the secondary filtrate from the liquid discharge pipe C, feeding the secondary filtrate into the activated carbon filter from the liquid inlet pipe D, filtering by the filter layer to obtain a tertiary filtrate, and finishing the filtering.
A method for using the filtering device for producing corn starch sugar, which also comprises a method for cleaning or replacing active carbon in an active carbon filter;
the cleaning method of the activated carbon in the activated carbon filter comprises the following steps:
after the liquid in the activated carbon filter is emptied, the liquid inlet pipe D and the liquid outlet pipe D are closed, cleaning liquid is flushed from the backflushing inlet pipe, the activated carbon in the filter layer is cleaned, and the cleaned liquid is discharged from the backflushing discharge pipe;
the method for replacing the activated carbon in the activated carbon filter comprises the following steps:
after the liquid in the activated carbon filter is emptied, the discharging flange is opened, and the activated carbon in the filter layer is discharged under the action of gravity; then opening a feeding flange, and flushing residual activated carbon in the filter layer; after cleaning, the material discharging flange is closed, and new active carbon is filled into the filter layer from the material feeding flange.
The technical solution of the present invention is not limited to the limitations of the above specific embodiments, and all technical modifications made according to the technical solution of the present invention fall within the protection scope of the present invention.
Claims (9)
1. A filtering device for producing corn starch sugar comprises a stirring tank, a first filter, a second filter and an activated carbon filter which are sequentially communicated; a stirring paddle is arranged in the stirring tank, and the stirring tank is provided with a feeding pipe, a liquid inlet pipe A and a liquid outlet pipe A; the method is characterized in that: the top of the first filter is provided with a liquid inlet pipe B, and the bottom of the first filter is provided with a liquid outlet pipe B; the top of the second filter is provided with a liquid inlet pipe C, and the bottom of the right side of the second filter is provided with a liquid discharge pipe C; the top of the activated carbon filter is provided with a liquid inlet pipe D, and the bottom of the activated carbon filter is provided with a liquid outlet pipe D;
at least two conical filter screens are arranged in the first filter from top to bottom; the conical filter screens can be detachably arranged in the first filter;
a metal filter cylinder is rotatably arranged in the second filter; the metal filter cylinder is detachable; the bottom end of the liquid inlet pipe C extends into the metal filter cylinder;
in the activated carbon filter, at least two filtering layers are arranged from top to bottom; active carbon is filled in the filter layer; the left side of the filter layer is lower than the right side and is obliquely arranged; the right side of the filter layer is provided with a feeding flange, and the left side is provided with a discharging flange; a back flushing inlet pipe is arranged below the right side of the activated carbon filter, and a back flushing discharge pipe is arranged on the left side of the activated carbon filter;
the liquid discharge pipe A is communicated with the liquid inlet pipe B through a pipeline; the liquid inlet pipe C is provided with a rotary joint, and the liquid outlet pipe B is communicated with the rotary joint through a pipeline; the liquid discharge pipe C is communicated with the liquid inlet pipe D through a pipeline.
2. The filter device for corn starch sugar production according to claim 1, wherein: the opening of the conical filter screen is upwards arranged in the first filter, and the aperture of the filtering holes of the conical filter screen from top to bottom is sequentially reduced; the upper end face of the conical filter screen is welded with a support ring.
3. The filter device for corn starch sugar production according to claim 2, wherein: the first filter comprises a liquid inlet flange cover, a filter screen flange pipe and a liquid discharge flange cover which are sequentially connected through flanges; the liquid inlet flange cover, the filter screen flange pipe and the liquid discharge flange cover are coaxial and have the same inner diameter; the number of the filter screen flange pipes is the same as that of the conical filter screens; the liquid inlet flange cover and the liquid discharge flange cover have the same structure and are symmetrically positioned at the upper end and the lower end of the first filter; the upper end surface of the liquid inlet flange cover is closed, and the center of the liquid inlet flange cover is fixedly communicated with a liquid inlet pipe B; the lower end surface of the liquid discharge flange cover is closed, and the center of the liquid discharge flange cover is fixedly communicated with a liquid discharge pipe B.
4. The filter equipment for corn starch sugar production according to claim 3, wherein: the upper end surface of the filter screen flange pipe is provided with a supporting step; the size and the height of the supporting step are matched with the supporting ring; the outer diameter of the support ring is larger than the inner diameter of the filter screen flange pipe; the outer diameter of the upper end surface of the conical filter screen is smaller than the inner diameter of the flange pipe of the filter screen; the support ring is placed in the support step; the conical filter screen at the top is pressed in the supporting step by the lower end face of the liquid inlet flange cover, and the rest conical filter screens are pressed in the supporting step by the lower end face of the filter screen flange pipe above the supporting step.
5. The filter equipment for corn starch sugar production according to claim 4, wherein: the metal filter cylinder comprises a filter cylinder body, an upper bottom and a lower bottom; the upper bottom and the lower bottom are respectively fixed on the upper end surface and the lower end surface of the filter cylinder body; the upper bottom and the lower bottom are both disc-shaped with notches at the edges; the center of the upper bottom is provided with a through hole matched with the liquid inlet pipe C; the filter cartridge body is provided with filter holes.
6. The filter equipment for corn starch sugar production according to claim 5, wherein: the second filter comprises an upper cover body, a lower tank body, a motor, an upper gland, a lower gland and a rotating shaft, wherein the upper gland, the lower gland and the rotating shaft are arranged in the lower tank body; the upper cover body is connected with the lower tank body through a flange; the upper gland and the lower gland are both provided with side walls; the side wall of the upper gland is provided with a bulge matched with the notch of the upper bottom; the side wall of the lower gland is provided with a bulge matched with the notch of the lower bottom;
the liquid inlet pipe C penetrates through the upper cover body and is rotationally connected with the upper cover body; the liquid inlet pipe C penetrates through the upper gland and is fixedly connected with the upper gland; the bottom surface of the lower gland is fixedly provided with a rotating shaft; the rotating shaft penetrates through the bottom of the lower tank body and is driven by a motor;
the opening of the upper gland is downward, and the opening of the lower gland is upward; the upper pressing cover and the lower pressing cover clamp the metal filter cylinder; the motor drives the rotating shaft to drive the lower pressing cover to rotate; the lower gland drives the metal filter cylinder, the upper gland and the liquid inlet pipe C to rotate; the bottom end of the liquid inlet pipe C extends into the metal filter cylinder; an elastic gasket is arranged between the upper gland and the upper bottom.
7. The filter equipment for corn starch sugar production according to claim 6, wherein: the number of the backflushing pipe arrays is the same as that of the filtering layers, and one backflushing pipe array is arranged above the left side of each filtering layer.
8. The use method of the filtering device for the production of corn starch sugar according to any one of claims 1 to 7, characterized by comprising the following steps:
s1, feeding the saccharified syrup into a stirring tank through a liquid inlet pipe A; putting the filter aid into a stirring tank through a feeding pipe, and uniformly stirring the syrup and the filter aid to obtain a mixed solution;
s2, discharging the mixed liquor from the liquor discharge pipe A, feeding the mixed liquor into a second filter from the liquor inlet pipe B, and filtering the mixed liquor by a conical filter screen of the second filter to obtain primary filtrate;
s3, discharging the primary filtrate from the liquid discharge pipe B, entering the metal filter cylinder from the liquid inlet pipe C, and filtering by the metal filter cylinder to obtain secondary filtrate;
and S4, discharging the secondary filtrate from the liquid discharge pipe C, feeding the secondary filtrate into the activated carbon filter from the liquid inlet pipe D, filtering by the filter layer to obtain a tertiary filtrate, and finishing the filtering.
9. The use method of the filtering device for producing corn starch sugar according to claim 8 is characterized in that: also comprises a method for cleaning or replacing the activated carbon in the activated carbon filter;
the cleaning method of the activated carbon in the activated carbon filter comprises the following steps:
after the liquid in the activated carbon filter is emptied, the liquid inlet pipe D and the liquid outlet pipe D are closed, cleaning liquid is flushed from the backflushing inlet pipe, the activated carbon in the filter layer is cleaned, and the cleaned liquid is discharged from the backflushing discharge pipe;
the method for replacing the activated carbon in the activated carbon filter comprises the following steps:
after the liquid in the activated carbon filter is emptied, the discharging flange is opened, and the activated carbon in the filter layer is discharged under the action of gravity; then opening a feeding flange, and flushing residual activated carbon in the filter layer; after cleaning, the material discharging flange is closed, and new active carbon is filled into the filter layer from the material feeding flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010992278.7A CN112090156A (en) | 2020-09-21 | 2020-09-21 | Filtering device for corn starch sugar production and using method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010992278.7A CN112090156A (en) | 2020-09-21 | 2020-09-21 | Filtering device for corn starch sugar production and using method |
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