阅读说明：本技术 一种麦芽糊精制备工艺及设备 (Maltodextrin preparation process and equipment ) 是由 李会强 于 2021-08-18 设计创作，主要内容包括：本发明涉及麦芽糊精制备技术领域,提出了一种麦芽糊精制备工艺及设备,包括以下步骤：制浆、喷射液化、冷却、除杂脱色、浓缩提纯和干燥；包括以下设备：速混调浆机、蒸汽喷射液化器、闪蒸罐、搅拌处理器、加压分离罐和喷雾干燥器。通过上述技术方案,解决了相关技术中由于酶法工艺生产中单位重量的麦芽糊精的能量消耗高的问题。(The invention relates to the technical field of maltodextrin preparation, and provides a maltodextrin preparation process and equipment, which comprise the following steps: pulping, spray liquefying, cooling, removing impurities, decolorizing, concentrating, purifying and drying; the device comprises the following equipment: the system comprises a quick-mixing paste mixer, a steam jet liquefier, a flash tank, a stirring processor, a pressurizing separation tank and a spray dryer. Through the technical scheme, the problem of high energy consumption of the maltodextrin per unit weight in the production of the enzyme method process in the related art is solved.)

1. A maltodextrin preparation process is characterized by comprising the following steps:

s10, pulping: fully stirring and mixing clean starch and distilled water to form starch milk with the mass fraction of 40-50%, adding alpha-amylase, and adjusting the pH value of the starch milk to 4.2-5.6;

s20, injection liquefaction: carrying out three times of spraying by adopting a gradient heating mode, wherein each time at an interval of 15 ℃, heating the slurry obtained at the last time to 210-230 ℃ to realize enzyme deactivation;

s30, cooling: cooling the slurry after enzyme deactivation by using a flash tank, and collecting redundant heat in the flash tank;

s40, impurity removal and decoloration: decoloring the slurry after cooling and enzyme deactivation by means of activated carbon particles in a stirring manner;

s50, concentration and purification: adding the slurry obtained in the step S40 into a pressure separation tank with a semipermeable membrane, and pressurizing the liquid in the pressure separation tank to enable water molecules in the slurry to penetrate through the semipermeable membrane to obtain high-concentration slurry in the pressure separation tank;

s60, drying: the high-concentration slurry is preheated by the heat collected in step S30, and then spray-dried to obtain maltodextrin.

2. A process according to claim 1, wherein in step S20, the injection temperature is 95-105 ℃ and the liquefaction temperature is 77-83 ℃ in the first injection liquefaction; in the second injection liquefaction, the injection temperature is 110-120 ℃, and the liquefaction temperature is 82-88 ℃; in the third time of spray liquefaction, the spray temperature is 125-135 ℃, and the liquefaction temperature is 87-93 ℃.

3. A process according to claim 2, wherein in step S40, the activated carbon particles are rotated with stirring at a speed of 30-60 r/min.

4. A process according to claim 3, wherein the pressure in the pressure separation tank is 0.3-0.7MPa in step S50.

5. An apparatus for applying the maltodextrin production process according to any one of claims 1 to 4, comprising a flash mixer (1), a steam jet liquefier (2), a flash tank (3), an agitation processor (4), a pressurized separation tank (5) and a spray dryer (6), characterized in that said flash mixer (1) has a mixing chamber (7), a driving member (8), a transmission member (9) and an agitation assembly, said driving member (8) powers said agitation assembly by means of said transmission member (9), said agitation assembly is disposed in said mixing chamber (7), said agitation assembly has a first agitation plate (10), a second agitation plate (11), a third agitation plate (12) and a fourth agitation plate (13) coaxially disposed, said first agitation plate (10) and said fourth agitation plate (13) rotate at the same speed but rotate in opposite directions, the second stirring plate (11) and the third stirring plate (12) have the same rotating speed but opposite rotating directions, the first stirring plate (10) and the second stirring plate (11) have the same rotating direction but different rotating speeds, and the third stirring plate (12) and the fourth stirring plate (13) have the same rotating direction but different rotating speeds.

6. A maltodextrin production process equipment according to claim 5, wherein said driving member (8) comprises two coaxially arranged first driving gear (14) and second driving gear (15), said transmission member (9) comprises coaxially arranged first driven gear (16), second driven gear (17), third driven gear (18) and fourth driven gear (19), said first driven gear (16) and said fourth driven gear (19) are all engaged with said first driving gear (14), said second driven gear (17) and said third driven gear (18) are all engaged with said second driving gear (15), said first driven gear (16) rotates synchronously with said first agitating plate (10), said second driven gear (17) rotates synchronously with said second agitating plate (11), said third driven gear (18) rotates synchronously with said third agitating plate (12), the fourth driven gear (19) and the fourth stirring plate (13) rotate synchronously.

7. An apparatus for a maltodextrin production process according to claim 5, wherein said stirring processor (4) comprises:

a fading bin (20);

the stirring main shaft (21) is rotatably arranged on the fading bin (20), the end part of the stirring main shaft is inserted into the fading bin (20), a groove is formed in the outer surface of the stirring main shaft (21), and the groove is spirally wound on the stirring main shaft (21);

the sliding rod (22) is arranged in the fading bin (20) in a sliding mode along the vertical direction, the top end of the sliding rod (22) is in contact with the groove, and the groove drives the sliding rod (22) to slide;

the storage cage (23) is arranged at the bottom end of the sliding rod (22) and is used for storing activated carbon particles;

and the stirring rod (24) is arranged at the end part of the stirring main shaft (21) and is positioned below the storage cage (23).

8. A maltodextrin manufacturing process equipment according to claim 7, wherein said stirring processor (4) further comprises a roller (25), said roller (25) is rolling arranged in said groove and is rotatably connected with the top end of said sliding bar (22).

9. A process and apparatus for the preparation of maltodextrin according to claim 8, wherein said stirring rod (24) is provided with a plurality of air holes (26).

10. A maltodextrin production process equipment according to claim 9, wherein said stirring processor (4) further comprises a turning plate (27), said turning plate (27) being rotatably disposed in said storage cage (23).

Technical Field

The invention relates to the technical field of maltodextrin preparation, in particular to a maltodextrin preparation process and equipment.

Background

Maltodextrin is a starch hydrolysate with a DE value of less than 20, which is intermediate between starch and starch sugar, and is a nutritious polysaccharide that is inexpensive, smooth in mouthfeel, and free of any taste. Maltodextrin is generally a mixture of various DE values, and can be a white powder or a concentrated liquid. The maltodextrin series products are prepared by taking starch as a raw material and performing hydrolysis conversion by an enzymatic process under the control of an enzymatic process, and the maltodextrin produced by the enzymatic process is the biggest difference from the maltodextrin produced by an acid process in that a long-chain amylose component cannot be separated out, so that a white precipitate cannot be generated, and the commercial value of the maltodextrin is greatly improved. However, in the existing enzymatic process, the steps of temperature adjustment, purification, drying and the like are required, so that the problem of excessive heat consumption is caused, the energy consumption for producing the maltodextrin per unit weight is high, and the production of enterprises is undoubtedly caused with serious cost burden.

Disclosure of Invention

The invention provides a maltodextrin preparation process and equipment, which solve the problem of high energy consumption of maltodextrin per unit weight in the production of an enzyme process in the related technology.

The technical scheme of the invention is as follows: a preparation process of maltodextrin comprises the following steps:

s10, pulping: fully stirring and mixing clean starch and distilled water to form starch milk with the mass fraction of 40-50%, adding alpha-amylase, and adjusting the pH value of the starch milk to 4.2-5.6;

s20, injection liquefaction: carrying out three times of spraying by adopting a gradient heating mode, wherein each time at an interval of 15 ℃, heating the slurry obtained at the last time to 210-230 ℃ to realize enzyme deactivation;

s30, cooling: cooling the slurry after enzyme deactivation by using a flash tank, and collecting redundant heat in the flash tank;

s40, impurity removal and decoloration: decoloring the slurry after cooling and enzyme deactivation by means of activated carbon particles in a stirring manner;

s50, concentration and purification: adding the slurry obtained in the step S40 into a pressure separation tank with a semipermeable membrane, and pressurizing the liquid in the pressure separation tank to enable water molecules in the slurry to penetrate through the semipermeable membrane to obtain high-concentration slurry in the pressure separation tank;

s60, drying: the high-concentration slurry is preheated by the heat collected in step S30, and then spray-dried to obtain maltodextrin.

As a further technical scheme, in the step S20, in the first injection liquefaction, the injection temperature is 95-105 ℃, and the liquefaction temperature is 77-83 ℃; in the second injection liquefaction, the injection temperature is 110-120 ℃, and the liquefaction temperature is 82-88 ℃; in the third time of spray liquefaction, the spray temperature is 125-135 ℃, and the liquefaction temperature is 87-93 ℃.

As a further technical proposal, in step S40, the activated carbon particles rotate along with the stirring motion, and the rotating speed is 30-60 r/min.

As a further technical proposal, in step S50, the pressure in the pressure separation tank is 0.3-0.7 MPa.

The process provided by the invention has the beneficial effects that: in pulping, distilled water and starch are mixed to prepare starch milk, so that the content of impurities in the starch milk can be reduced; in the jet liquefaction, the jet liquefaction is carried out by adopting a gradient temperature rise mode, so that the protein in the starch can be inactivated and further aggregated together; in the cooling process, the heat exchanged in the flash tank is collected for the subsequent process, so that the energy consumption is reduced; in the impurity removal and decoloration, the activated carbon particles can move in the slurry by stirring, so that the decoloration efficiency can be greatly improved; in the concentration and purification, a semi-permeable membrane and a liquid pressurization mode are adopted to discharge a part of water to form high-concentration slurry, so that the concentration efficiency is improved; during drying, the heat exchanged in the flash tank is used for preheating the slurry, so that the energy consumption can be reduced again. The preparation process of maltodextrin greatly improves the efficiency in the processes of decoloring and concentrating, and further integrally realizes a process for efficiently producing maltodextrin.

The invention also provides equipment for a maltodextrin preparation process, which comprises a quick-mixing pulping machine, a steam jet liquefier, a flash tank, a stirring processor, a pressurizing separation tank and a spray dryer, wherein the quick-mixing pulping machine is provided with a mixing cavity, a driving part and a stirring component, the driving part supplies power to the stirring component by means of the driving part, the stirring component is arranged in the mixing cavity, the stirring component is provided with a first stirring plate, a second stirring plate, a third stirring plate and a fourth stirring plate which are coaxially arranged, the first stirring plate and the fourth stirring plate have the same rotating speed but opposite rotating directions, the second stirring plate and the third stirring plate have the same rotating speed but opposite rotating directions, the first stirring plate and the second stirring plate have the same rotating speed but different rotating speeds, and the third stirring plate and the fourth stirring plate have the same rotating directions but different rotating speeds.

As a further technical scheme, the driving piece comprises a first driving gear and a second driving gear which are coaxially arranged, the transmission piece comprises a first driven gear, a second driven gear, a third driven gear and a fourth driven gear which are coaxially arranged, the first driven gear and the fourth driven gear are both meshed with the first driving gear, the second driven gear and the third driven gear are both meshed with the second driving gear, the first driven gear and the first stirring plate synchronously rotate, the second driven gear and the second stirring plate synchronously rotate, the third driven gear and the third stirring plate synchronously rotate, and the fourth driven gear and the fourth stirring plate synchronously rotate.

As a further technical solution, the agitation processor includes:

a fading bin;

the stirring main shaft is rotatably arranged on the fading bin, the end part of the stirring main shaft extends into the fading bin, a groove is formed in the outer surface of the stirring main shaft, and the groove is spirally wound on the stirring main shaft;

the sliding rod is arranged in the fading bin in a sliding mode along the vertical direction, the top end of the sliding rod is in contact with the groove, and the groove drives the sliding rod to slide;

the storage cage is arranged at the bottom end of the sliding rod and is used for containing activated carbon particles;

the stirring rod is arranged at the end part of the stirring main shaft and is positioned below the storage cage.

As a further technical scheme, the stirring processor also comprises a roller, and the roller is arranged in the groove in a rolling manner and is rotationally connected with the top end of the sliding rod.

As a further technical scheme, the stirring rod is provided with a plurality of air holes.

As a further technical scheme, the stirring processor also comprises a turnover plate, and the turnover plate is rotatably arranged in the storage cage.

The working principle and the beneficial effects of the invention are as follows: compared with the prior art, the fast mixing and pulping machine is the main equipment involved in the pulping step, the steam jet liquefier is the main equipment involved in the jet liquefaction step, the flash tank is the main equipment involved in the cooling step, the stirring processor is the main equipment involved in the impurity removal and decoloration step, the pressurizing separation tank is the main equipment involved in the concentration and purification step, and the spray dryer is the main equipment involved in the drying step. The quick-mixing pulping machine is provided with a mixing cavity, a driving piece, a transmission piece and a stirring assembly, wherein the stirring assembly is arranged in the mixing cavity, the driving piece pushes the stirring assembly to stir by means of the transmission piece, and the stirring assembly stirs clean starch and distilled water in the mixing cavity; first stirring board, second stirring board, third stirring board and fourth stirring board are coaxial setting to the rotational speed with turn to respectively different, the stirring subassembly just can play the not equidirectional stirring of mixing velocity to starch milk like this, and then has carried out anomalous stirring with starch milk, has guaranteed starch and distilled water abundant mixture in the short time.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

FIG. 1 is a flow diagram of a maltodextrin production process provided by the present invention;

FIG. 2 is a schematic structural diagram of an apparatus for a maltodextrin production process according to the present invention;

FIG. 3 is a schematic structural diagram of the instant mixing pulper according to the present invention;

FIG. 4 is a schematic view of the configuration of the agitation processor of the present invention;

in the figure:

1. the fast mixing and pulping machine comprises a fast mixing and pulping machine 2, a steam jet liquefier 3, a flash tank 4, a stirring processor 5, a pressurizing separation tank 6, a spray dryer 7, a mixing cavity 8, a driving piece 9, a transmission piece 10, a first stirring plate 11, a second stirring plate 12, a third stirring plate 13, a fourth stirring plate 14, a first driving gear 15, a second driving gear 16, a first driven gear 17, a second driven gear 18, a third driven gear 19, a fourth driven gear 20, a fading bin 21, a stirring main shaft 22, a sliding rod 23, a cage 24, a stirring rod 25, a roller 26, an air hole 27 and a turnover plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any inventive step, are intended to be within the scope of the present invention.

As shown in fig. 1, the present embodiment provides a process and an apparatus for preparing maltodextrin, comprising the following steps:

s10, pulping: fully stirring and mixing clean starch and distilled water to form starch milk with the mass fraction of 40-50%, adding alpha-amylase, and adjusting the pH value of the starch milk to 4.2-5.6;

s20, injection liquefaction: carrying out three times of spraying by adopting a gradient heating mode, wherein each time at an interval of 15 ℃, heating the slurry obtained at the last time to 210-230 ℃ to realize enzyme deactivation;

s30, cooling: cooling the slurry after enzyme deactivation by using a flash tank 3, and collecting redundant heat in the flash tank 3;

s40, impurity removal and decoloration: decoloring the slurry after cooling and enzyme deactivation by means of activated carbon particles in a stirring manner;

s50, concentration and purification: adding the slurry obtained in the step S40 into a pressure separation tank 5 with a semipermeable membrane, and pressurizing the liquid in the pressure separation tank 5 to enable water molecules in the slurry to pass through the semipermeable membrane, thereby obtaining high-concentration slurry in the pressure separation tank 5;

s60, drying: the high-concentration slurry is preheated by the heat collected in step S30, and then spray-dried to obtain maltodextrin.

In the embodiment, during pulping, distilled water and starch are mixed to prepare starch milk, so that the content of impurities in the starch milk can be reduced; in the jet liquefaction, the jet liquefaction is carried out by adopting a gradient temperature rise mode, so that the protein in the starch can be inactivated and further aggregated together; in the cooling process, the heat exchanged in the flash tank 3 is collected for the subsequent process, so that the energy consumption is reduced; in the impurity removal and decoloration, the activated carbon particles can move in the slurry by stirring, so that the decoloration efficiency can be greatly improved; in the concentration and purification, a semi-permeable membrane and a liquid pressurization mode are adopted to discharge a part of water to form high-concentration slurry, so that the concentration efficiency is improved; during drying, the heat exchanged in the flash tank 3 is used to preheat the slurry, again reducing the energy consumption. The preparation process of maltodextrin greatly improves the efficiency in the processes of decoloring and concentrating, and further integrally realizes a process for efficiently producing maltodextrin.

Further, the embodiment also provides that in the step S20, in the first injection liquefaction, the injection temperature is 95-105 ℃, and the liquefaction temperature is 77-83 ℃; in the second injection liquefaction, the injection temperature is 110-120 ℃, and the liquefaction temperature is 82-88 ℃; in the third time of spray liquefaction, the spray temperature is 125-135 ℃, and the liquefaction temperature is 87-93 ℃. In step S40, the activated carbon particles are rotated with stirring at a rotation speed of 30 to 60 r/min. In step S50, the pressure in the pressure separation tank 5 is 0.3-0.7 MPa.

In this embodiment, the appropriate pressure is applied to the pressurizing and separating tank 5, so that the water molecules can be prevented from damaging the semipermeable membrane while passing through the semipermeable membrane rapidly and effectively. The stirring speed is limited, so that the activated carbon particles can be guaranteed to absorb the pigment efficiently.

As shown in fig. 2 to 4, the invention also provides a device for preparing maltodextrin, which comprises a quick-mixing pulper 1, a steam injection liquefier 2, a flash tank 3, a stirring processor 4, a pressurized separation tank 5 and a spray dryer 6, wherein the quick-mixing pulper 1 is provided with a mixing cavity 7, the stirring assembly is arranged in the mixing cavity 7 and comprises a first stirring plate 10, a second stirring plate 11, a third stirring plate 12 and a fourth stirring plate 13 which are coaxially arranged, the first stirring plate 10 and the fourth stirring plate 13 have the same rotating speed but opposite rotating directions, the second stirring plate 11 and the third stirring plate 12 have the same rotating speed but opposite rotating directions, the first stirring plate 10 and the second stirring plate 11 have the same rotating speed but different rotating speeds, and the third stirring plate 12 and the fourth stirring plate 13 have the same rotating speed but different rotating speeds.

In this embodiment, the rapid mixing and pulping machine 1 is a main device involved in a pulping step, the steam jet liquefier 2 is a main device involved in a jet liquefaction step, the flash tank 3 is a main device involved in a cooling step, the stirring processor 4 is a main device involved in an impurity removal and decoloration step, the pressurized separation tank 5 is a main device involved in a concentration and purification step, and the spray dryer 6 is a main device involved in a drying step. The quick-mixing pulping machine 1 is provided with a mixing cavity 7, a driving piece 8, a transmission piece 9 and a stirring component, wherein the stirring component is arranged in the mixing cavity 7, the driving piece 8 pushes the stirring component to stir by means of the transmission piece 9, and the stirring component stirs clean starch and distilled water in the mixing cavity 7; first stirring board, second stirring board, third stirring board and fourth stirring board are coaxial setting to the rotational speed with turn to respectively different, the stirring subassembly just can play the not equidirectional stirring of mixing velocity to starch milk like this, and then has carried out anomalous stirring with starch milk, has guaranteed starch and distilled water abundant mixture in the short time.

As shown in fig. 3, further, the present embodiment also proposes that the driving member 8 includes two first driving gears 14 and two second driving gears 15 which are coaxially disposed, the transmission member 9 includes a first driven gear 16, a second driven gear 17, a third driven gear 18 and a fourth driven gear 19 which are coaxially disposed, the first driven gear 16 and the fourth driven gear 19 are both engaged with the first driving gear 14, the second driven gear 17 and the third driven gear 18 are both engaged with the second driving gear 15, the first driven gear 16 rotates synchronously with the first agitating plate 10, the second driven gear 17 rotates synchronously with the second agitating plate 11, the third driven gear 18 rotates synchronously with the third agitating plate 12, and the fourth driven gear 19 rotates synchronously with the fourth agitating plate 13.

In the present embodiment, the first drive gear 14 and the second drive gear 15 are in a driving type and rotate coaxially at the same angular velocity, and the first driven gear 16, the second driven gear 17, the third driven gear 18, and the fourth driven gear 19 are in a driven type. Since the second driven gear 17 and the second agitating plate 11 rotate in synchronization and the third driven gear 18 and the third agitating plate 12 rotate in synchronization, the second driving gear 15 and the second driven gear 17 and the third driven gear 18 are in a bevel gear engagement type, and similarly, the first driving gear 14 and the first driven gear 16 and the fourth driven gear 19 are in a bevel gear engagement type. Since the first agitating plate 10, the second agitating plate 11, the third agitating plate 12, and the fourth agitating plate 13 are coaxially provided, a multi-stage sleeve type may be provided, in which the first agitating plate 10 is connected to the first driven gear 16 via an outermost sleeve, the second agitating plate 11 is connected to the second driven gear 17 via a second outer sleeve, the third agitating plate 12 is connected to the third driven gear 18 via a second inner sleeve, and the fourth agitating plate 13 is connected to the fourth driven gear 19 via an innermost sleeve.

As shown in fig. 4, further, the present embodiment also proposes that the agitation processor 4 includes:

a fading bin 20;

the stirring main shaft 21 is rotatably arranged on the fading bin 20, the end part of the stirring main shaft 21 extends into the fading bin 20, a groove is formed in the outer surface of the stirring main shaft 21, and the groove is spirally wound on the stirring main shaft 21;

the sliding rod 22 is arranged in the fading bin 20 in a sliding mode along the vertical direction, the top end of the sliding rod 22 is in contact with the groove, and the groove drives the sliding rod 22 to slide;

the storage cage 23 is arranged at the bottom end of the sliding rod 22 and is used for storing activated carbon particles;

and a stirring rod 24 provided at an end of the stirring main shaft 21 and located below the storage cage 23.

In this embodiment, the fading bin 20 is used for containing a slurry to be faded, the stirring main shaft 21 is rotatably arranged on the fading bin 20, the sliding rod 22 is slidably arranged in the fading bin 20, the stirring main shaft 21 is provided with a groove, the groove spirally surrounds the outside of the stirring main shaft 21, and the end of the sliding rod 22 is always positioned in the groove, so that the sliding rod 22 can be pushed to move in the vertical direction by the active rotation of the stirring main shaft 21 through the groove; the bottom end of the sliding rod 22 is connected with the storage cage 23, the activated carbon particles are placed in the storage cage 23, the slurry can enter the storage cage 23, but the activated carbon particles cannot come out of the storage cage 23, the storage cage 23 moves up and down in the slurry along with the sliding rod 22, and under the buoyancy action of the slurry, the activated carbon particles in the storage cage 23 can be turned over, so that the effective contact area of the activated carbon particles and the slurry can be increased, and even if a large number of activated carbon particles exist in the storage cage 23, the activated carbon particles in the storage cage can be turned over to the outside; the stirring rod 24 is arranged on the stirring main shaft 21 and is positioned below the object placing cage 23, when the stirring main shaft 21 drives the stirring rod to rotate, the stirring rod can enable the slurry in the fading bin 20 to fluctuate, and the object placing cage 23 is matched to move up and down, so that the fading efficiency of the activated carbon to the slurry can be further improved.

As shown in fig. 4, further, the present embodiment also proposes that the stirring processor 4 further comprises a roller 25, and the roller 25 is rotatably disposed in the groove and is rotatably connected to the top end of the sliding rod 22.

In this embodiment, in order to ensure that the groove can be smoothly pushed to slide, the top end of the sliding rod 22 is further provided with a roller 25, the sliding rod 22 is rotatably connected with the roller 25, and the roller 25 is arranged in the groove, so that the friction force applied to the groove can be reduced.

As shown in fig. 4, in the present embodiment, a plurality of air holes 26 are further formed in the stirring rod 24.

In this embodiment, set up a plurality of gas pocket 26 on stirring rod 24, when stirring rod 24 rotated, the rivers velocity of flow in the gas pocket 26 can the grow, and then can produce the microbubble in aqueous, and the microbubble can pass in putting thing cage 23 from rising the in-process, and then can play the effect that the active carbon granule overturns in the thing cage 23 of pushing away.

As shown in fig. 4, further, the present embodiment further proposes that the stirring processor 4 further comprises a turning plate 27, and the turning plate 27 is rotatably disposed in the storage cage 23.

In this embodiment, the returning face plate 27 rotates to be set up in putting the thing cage 23, when putting the thing cage 23 and reciprocating, the returning face plate 27 can overturn under the promotion of thick liquid, and the returning face plate 27 can be pushed away the active carbon granule and remove in the upset in-process.

The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.