CN115213977A - High-temperature-resistant beet red pigment preparation equipment and process - Google Patents

Abstract

The invention discloses a high temperature-resistant beet red pigment preparation equipment and process, relates to the technical field of beet red pigment preparation, and aims at the production efficiency of beet red pigment under the environment that the existing biological and chemical means are difficult to break through temporarily. To improve the problem, the following solution is now proposed, which includes a slicing mechanism for beetroot slices, a material tank for acid treatment of beetroot slices, and a material frame for the transfer of beetroot slices, and also includes a drive for raising and lowering the material frame. The lifting mechanism and the servo electric sliding table that drives the material frame to move horizontally, the servo electric sliding table is provided with three groups in parallel, and the two groups of the material cylinder and the material frame are respectively arranged between the adjacent two groups of the servo electric sliding table. The invention has a novel structure, and the equipment and technological means effectively solve the problem that the production efficiency of beet red pigment is difficult to improve under the environment that the existing biological and chemical means are temporarily difficult to break through.

Description

A kind of high temperature resistant beet red pigment preparation equipment and process

technical field

The invention relates to the technical field of beet red pigment preparation, in particular to a high temperature resistant beet red pigment preparation equipment and process.

Background technique

Beetroot is used to prepare beet red pigment. The preparation method of beet red pigment is very mature. The basic process is washing, slicing, extracting, filtering, purifying and drying beetroot into powder. The red pigment of beet will change at high temperature. Failure to decompose, so the general extraction temperature is about 20 degrees Celsius. In addition to physical cooling to help improve the extraction efficiency of red pigment, acid solution is used to pretreat the raw material of beetroot, so that the pH value is around 4.5, and the red pigment is thermally stable at this time. Higher, can accept higher extraction temperature than other pH values;

To sum up, in the current high temperature beet extraction process, the direction of improvement is more inclined to biological and chemical processes, such as selecting acidic chemical solvents with better extraction effect and safer, but ignoring the impact of production equipment technology on beet red pigment. The impact of production efficiency, in the environment where biological and chemical means are temporarily difficult to break through, it is a better choice to improve the production efficiency of equipment. Therefore, we propose a high temperature resistant beet red pigment preparation equipment and process.

SUMMARY OF THE INVENTION

The high temperature resistant beet red pigment preparation equipment and process provided by the invention solves the problem that the beet red pigment production efficiency is difficult to improve under the environment where the existing biological and chemical means are temporarily difficult to break through.

In order to achieve the above object, the present invention adopts the following technical solutions:

A high temperature resistant beet red pigment preparation equipment, comprising a slicing mechanism for beetroot slices, a material tank for acid treatment of beetroot slices, a material frame for transferring beetroot slices, and a Lifting mechanism, servo electric sliding table that drives the horizontal movement of the material frame;

The servo electric sliding table is provided with three groups in parallel, the two groups of the material cylinder and the material frame are respectively arranged between the adjacent two groups of the servo electric sliding table, and the three groups of the lifting mechanisms are respectively vertically installed on the three servo electric sliding tables. The top of the sliding table of the table is arranged in parallel, and the material frame is connected with the lifting mechanism;

In the slicing mechanism: the feed is slid through the chute, the end of the chute is provided with a cutter and a pushing impeller for slicing the beetroot, both sides of the end of the chute are provided with a casing with a knife edge at the bottom, and all The casing is provided with a push plate that rotates and pushes the beetroot slices.

Preferably, each set of the lifting mechanism is composed of four sets of telescopic guide rods, a set of hydraulic cylinders and a mounting plate, and the guide rods are distributed at four corners of the sliding table, the hydraulic cylinders are arranged between the guide rods, and all the guide rods are arranged between the guide rods. The mounting plate is fixedly connected with the top end of the guide rod, and the piston rod of the hydraulic cylinder is connected with the mounting plate.

Preferably, the size of the material frame can be matched and sleeved in the material cylinder, and the edge of the frame mouth of the material frame is set in eversion, and a collar is rotatably connected between the mounting plates of the adjacent two groups of the lifting mechanism. , and the cross section of the collar is L-shaped, and the edge of the frame mouth of the material frame is hung with the collar.

Preferably, the slicing mechanism further includes a bracket, and the chute is obliquely arranged at the top of the bracket, the casing is connected to both sides of the bracket, the cutting knife is arranged vertically, and the pushing impeller is rotatably connected to the bracket , and the blade of the pusher impeller is provided with a slot matched with the cutter, the bracket is located at the pusher impeller and is provided with a first motor, and the output shaft of the first motor is coaxially connected with the pusher impeller.

Preferably, the middle of the bottom end of the chute is punched and provided with material distribution protrusions, the chute is located on both sides of the material distribution protrusion with punched slopes, and the chute located at the end of the material distribution protrusion is provided with bezel.

Preferably, the top of the casing is provided with a feeding port at the slope, and the top of the casing is coaxially mounted with a second motor, the output shaft of the second motor extends into the casing, and the push plate is in the shape of a The annular array is connected to the output shaft of the second motor.

Preferably, the bottom end of the casing is provided with knife edges by punching and grinding, and the knife edges are distributed in a circular array with respect to the casing, the upper part of the push plate is vertically arranged, and the lower part is bent in a direction away from the cutting edge of the knife edge.

Preferably, one end of the servo-electric sliding table away from the slicing mechanism is provided with a top wheel for unloading the material frame, both ends of the top wheel are concavely arranged, and the concave radian of the top wheel is in line with the material frame. The shapes match each other.

Preferably, the bottom of the material frame is hollow.

A high temperature resistant beet red pigment preparation equipment, the technological process is:

S1. Wash the beetroot by ultrasonic wave or manually, and feed the beetroot into the chute through the conveyor belt. The beetroot slides along the chute and encounters the cutter. Under the action of sliding inertia, the cutter is cut into the beetroot. The motor drives the pusher impeller to rotate, and the blades of the pusher impeller push the remaining part of the beetroot to forcibly pass through the cutter, so that the beetroot is evenly divided into two halves, and the blade avoids the cutter through the notch;

S2. The beetroot that is evenly divided into two halves continues to be pushed by the blade, and smoothly transitions to the feeding bulge, and is immediately separated by the acute-angled feeding bulge at the top, and the separated beetroot petals pass through the slope and feed The mouth falls into the casing, and the second motor drives the push plate to push the beetroot flap to forcibly slide over the knife edge, and slices are cut off by the cutting edge of the knife edge;

S3. Taking a single beetroot petal as an example, in the early stage of slicing, the cut surface of the beetroot petal is attached to the bottom of the shell, and the edge part of the beetroot petal is thinner, so that the bevel edge is squeezed by the inclined surface inside the bent part of the bottom of the push plate. When the push plate is pushed flatly, the downward force is given to the beetroot petals at the same time, so that the knife edge can effectively cut the beetroot petals;

S4. When the slicing is in progress, the lifting mechanism and the material frame are on standby at the bottom of the casing, so that the slices fall into the material frame. When the material frame is loaded, the lifting mechanism and the fully loaded material frame are driven by the servo electric slide to move to the material cylinder. ;

S5. Add the acid treatment solution into the material tank, and put the fully loaded material frame into the material tank through the servo electric sliding table and the lifting mechanism, so that the acid treatment solution soaks the beetroot slices;

S6. After the acid treatment is completed, first lift the material frame, wait for a period of time to drain the acid treatment solution residue in the material frame, and move the material frame to the top wheel, so that the bottom end of the material frame contacts the concave part of the top wheel, It is gradually lifted by the top wheel. At this time, the deflection angle of the material frame can be controlled by the lifting mechanism, so that the solid residual material in the material frame is poured out, and the acid treatment solution is extracted for subsequent processes such as filtration, purification and drying of red pigment.

The beneficial effects of the present invention are:

1. The spherical beetroot slides along the chute, and under the action of inertia and the rotation of the pusher impeller, the beetroot is forcibly divided into two halves by the cutter, thus making the originally difficult spherical beetroot an easy-to-process beet. The root petals and beetroot petals continue to slide and are separated by the feeding protrusions, and then fall into the shell through the slope and the feeding port for slicing.

2. The edge part of the beetroot flap is thin, so that the beveled edge of the beetroot flap is squeezed by the inclined surface inside the bent part of the bottom of the push plate, so that when the push plate is pushed flat, it will also give the beetroot flap downward force, so that the knife edge can be effectively The continuous feeding and continuous pushing and slicing of beetroot flaps can efficiently obtain high-quality beetroot flakes, which is very beneficial to the subsequent acid treatment process.

3. The material frame of the device moves up and down with the lifting mechanism and translates with the servo electric sliding table, so as to flexibly transfer between the slicing station, the acid treatment station and the solid residue discharge station, which can be semi-automatic or fully automatic. The continuous realization of high-quality beetroot slicing, acid treatment and discharge.

4. The material frame of the device is sleeved with the collar of the lifting mechanism, and the collar is connected with the mounting plate of the lifting mechanism in rotation, so that the material frame moves to the top wheel. When the bottom end of the material frame contacts the concave part of the top wheel , it will be gradually lifted by the top wheel, at this time, the deflection angle of the material frame can be controlled by the lifting mechanism, and the solid residue in the material frame can be poured out.

To sum up, the equipment and technological means effectively solve the problem that the production efficiency of beet red pigment is difficult to improve in the environment where the existing biological and chemical means are temporarily difficult to break through.

Description of drawings

FIG. 1 is a schematic structural diagram of the apparatus of the present invention when it is in slicing processing.

FIG. 2 is a schematic structural diagram of the device of the present invention in a state to be extracted.

FIG. 3 is a schematic structural diagram of the device of the present invention in a solidified material discharging state.

FIG. 4 is a schematic structural diagram of the lifting mechanism of the present invention.

FIG. 5 is an enlarged view of the structure of A in FIG. 4 of the present invention.

FIG. 6 is a schematic structural diagram of the slicing mechanism of the present invention.

FIG. 7 is a structural sectional view of the slicing mechanism of the present invention.

FIG. 8 is a partial structural sectional view of the slicing mechanism of the present invention.

Numerals in the figure: 1, slicing mechanism; 101, bracket; 102, chute; 103, cutter; 104, material distribution protrusion; 105, slope; 106, baffle; 107, push impeller; 108, first motor ;109, shell; 110, feeding port; 111, knife edge; 112, push plate; 113, second motor; 2, lifting mechanism; 201, guide rod; 202, hydraulic cylinder; 203, mounting plate; 204, collar ; 3. Material cylinder; 301. Material frame; 4. Top wheel; 5. Servo electric sliding table.

Detailed ways

The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation or a specific orientation. construction and operation, and therefore should not be construed as limiting the invention. Furthermore, the terms "first", "second", and "third" are used for descriptive purposes only and should not be construed to indicate or imply relative importance.

In the description of the present invention, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense, unless otherwise expressly specified and limited, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; it can be mechanical connection or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.

1-8, a high temperature resistant beet red pigment preparation equipment, including a slicing mechanism 1 for beetroot slices, a material tank 3 for acid treatment of beetroot slices and a material frame 301 for beetroot slice transfer , and also includes a lifting mechanism 2 for driving the material frame 301 to rise and fall, and a servo electric sliding table 5 for driving the material frame 301 to move horizontally. Between the adjacent two sets of servo electric slide tables 5, three sets of lifting mechanisms 2 are respectively vertically installed on the top of the slide tables of the three sets of servo electric slide tables 5 and are arranged in parallel. Inside: sliding feed through the chute 102, the end of the chute 102 is provided with a cutter 103 and a pushing impeller 107 for cutting beetroot, both sides of the end of the chute 102 are provided with a casing 109 with a knife edge 111 at the bottom, and A push plate 112 that rotates and pushes the beetroot slices is provided in the casing 109 .

Each set of lifting mechanisms 2 is composed of four sets of telescopic guide rods 201, a set of hydraulic cylinders 202 and a mounting plate 203, and the guide rods 201 are distributed at the four corners of the slide table, and the hydraulic cylinders 202 are arranged between the guide rods 201 and installed The plate 203 is fixedly connected with the top of the guide rod 201, the piston rod of the hydraulic cylinder 202 is connected with the mounting plate 203, the size of the material frame 301 can be matched and sleeved in the material cylinder 3, and the edge of the frame mouth of the material frame 301 is set in eversion. A collar 204 is rotatably connected between the mounting plates 203 of the adjacent two sets of lifting mechanisms 2, and the section of the collar 204 is L-shaped, the edge of the frame mouth of the material frame 301 is hooked to the collar 204, and the bottom of the material frame 301 is in the shape of an L. Openwork set.

As shown in FIG. 6 , FIG. 7 and FIG. 8 , the slicing mechanism 1 further includes a bracket 101 , and the chute 102 is obliquely arranged at the top of the bracket 101 , the housing 109 is connected to both sides of the bracket 101 , the cutter 103 is vertically arranged, and pushes the The impeller 107 is rotatably connected with the bracket 101, and the blade of the impeller 107 is provided with a slot that matches the cutter 103. The bracket 101 is located at the impeller 107 with a first motor 108, and the output shaft of the first motor 108 It is coaxially connected with the pusher impeller 107. The middle of the bottom end of the chute 102 is stamped with a material distribution protrusion 104. The chute 102 is located on both sides of the material distribution protrusion 104 and is stamped with slopes 105, and the chute 102 is located in the material distribution protrusion. The end of the protrusion 104 is provided with a baffle 106;

The spherical beetroot slides along the chute 102, and under the action of inertia and the rotation of the pushing impeller 107, the beetroot is forcibly divided into two halves by the cutter 103, thereby making the originally difficult spherical beetroot easy to process. Beetroot petals, the beetroot petals continue to slide and are separated by the material distributing protrusion 104 and then fall into the casing 109 through the slope 105 and the feeding port 110 for slicing.

The top of the casing 109 is located at the slope 105 with a feeding port 110, and the top of the casing 109 is coaxially mounted with a second motor 113, the output shaft of the second motor 113 extends into the casing 109, and the push plate 112 is in a circular array with The output shaft of the second motor 113 is connected, the bottom end of the casing 109 is punched and ground with knife edges 111 , and the knife edges 111 are distributed in a circular array with respect to the casing 109 , the upper part of the push plate 112 is vertically arranged, and the lower part faces away from the cutting edge of the knife edge 111 . bend;

The edge portion of the beetroot petal is relatively thin, so that the inclined surface inside the bent portion at the bottom of the push plate 112 squeezes the edge of the beetroot petal, so that when the push plate 112 is pushed flat, a downward force is given to the beetroot petal at the same time, so that the knife edge 111 can be Effectively cutting beetroot flaps, continuous feeding and continuous pushing and slicing can efficiently obtain high-quality beetroot flakes.

As shown in FIG. 3 , one end of the servo-electric sliding table 5 away from the slicing mechanism 1 is provided with a top wheel 4 for discharging the material frame 301 . Both ends of the top wheel 4 are concavely arranged, and the concave radian of the top wheel 4 The shape of the material frame 301 is matched with each other, and the material frame 301 is moved to the top wheel 4, so that the bottom end of the material frame 301 contacts the concave part of the top wheel 4, and is gradually lifted by the top wheel 4. At this time, the lifting mechanism 2 The deflection angle of the material frame 301 is controlled, so that the solid residual material in the material frame 301 is poured out.

A process for preparing high temperature resistant beet red pigment, the process flow is:

S1. Wash the beetroot by ultrasonic waves or manually, and feed the beetroot into the chute 102 through the conveyor belt. The beetroot slides along the chute 102 and encounters the cutter 103, and the cutter 103 is cut into the beetroot under the action of sliding inertia. , the pusher impeller 107 is driven to rotate by the first motor 108, and the blade of the pusher impeller 107 pushes the remaining part of the beetroot to forcibly pass through the cutter 103, so that the beetroot is evenly divided into two halves, and the blade avoids the cutter 103 through the notch;

S2. The beetroot that has been divided into two halves continues to be pushed by the blade, and smoothly transitions to the material distribution protrusion 104, and is immediately separated by the acute-angled material distribution protrusion 104 at the top, and the separated beetroot petals pass through the slope. 105 and the feeding port 110 fall into the housing 109, and the second motor 113 drives the push plate 112 to push the beetroot petals to forcibly slide over the knife edge 111, and slices are cut off by the edge part of the knife edge 111;

S3. Taking a single beetroot petal as an example, in the early stage of slicing, the cut surface of the beetroot petal is fitted with the bottom of the shell 109, and the edge part of the beetroot petal is relatively thin, so that the inclined surface inside the bent part at the bottom of the push plate 112 squeezes the beetroot petal edge, so that when the push plate 112 is pushed flatly, a downward component force is given to the beetroot petals at the same time, so that the knife edge 111 can effectively cut the beetroot petals;

S4. When the slicing is in progress, the lifting mechanism 2 and the material frame 301 are on standby at the bottom of the housing 109, so that the slices fall into the material frame 301. When the material frame 301 is loaded, the lifting mechanism 2 and the full load are driven by the servo electric sliding table 5. The material frame 301 moves to the material cylinder 3;

S5, add the acid treatment solution into the material tank 3, and put the fully loaded material frame 301 into the material tank 3 through the servo electric sliding table 5 and the lifting mechanism 2, so that the acid treatment solution soaks the beetroot slices;

S6. After the acid treatment is completed, first lift the material frame 301, wait for a period of time to drain the acid treatment solution remaining in the material frame 301, and move the material frame 301 to the top wheel 4, so that the bottom end of the material frame 301 contacts the top wheel The concave part of 4 is gradually lifted by the top wheel 4. At this time, the deflection angle of the material frame 301 can be controlled by the lifting mechanism 2, so that the solid residue in the material frame 301 is poured out, and the acid treatment solution is extracted for subsequent follow-up. The red pigment is filtered, purified and dried.

The above are only the preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, some improvements and modifications can be made without departing from the principles of the present invention, and these improvements and modifications should also be regarded as In the protection scope of the present invention, other parts not described in detail in the present invention belong to the prior art, so they will not be repeated here. Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, not to Its limitation; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that it is still possible to modify the technical solutions described in the foregoing embodiments, or to modify some or all of the technical features. Equivalent replacements are made; and these modifications or replacements do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. A high temperature resistant beet red pigment preparation device, comprising a slicing mechanism (1) for beetroot slices, a material tank (3) for acid treatment of beetroot slices and a material frame (301) for beetroot slice transfer ), characterized in that it further comprises a lifting mechanism (2) for driving the material frame (301) up and down, and a servo electric sliding table (5) for driving the material frame (301) to move horizontally; The servo electric sliding table (5) is provided with three groups in parallel, and the material cylinders (3) and the material frame (301) of the two groups are respectively arranged between the adjacent two groups of the servo electric sliding table (5). The lifting mechanisms (2) are respectively vertically installed on the tops of the sliding tables of the three sets of servo electric sliding tables (5) and are arranged in parallel, and the material frame (301) is connected with the lifting mechanism (2); In the slicing mechanism (1): the feed is slid through the chute (102), and the end of the chute (102) is provided with a cutter (103) and a pushing impeller (107) for slicing the beetroot. Both sides of the end of the groove (102) are provided with a casing (109) with a knife edge (111) at the bottom, and a push plate (112) for rotating and pushing beetroot slices is arranged in the casing (109). 2. A kind of high-temperature resistant beet red pigment preparation equipment according to claim 1, characterized in that, each group of the lifting mechanism (2) is composed of four groups of retractable guide rods (201), a group of hydraulic cylinders (202) ) and a mounting plate (203), and the guide rods (201) are distributed at the four corners of the sliding table, the hydraulic cylinder (202) is arranged between the guide rods (201), and the mounting plate (203) is connected to the guide rod (201) The top end is fixedly connected, and the piston rod of the hydraulic cylinder (202) is connected with the mounting plate (203). 3. The high temperature resistant beet red pigment preparation equipment according to claim 2, wherein the size of the material frame (301) can be matched and sleeved in the material tank (3), and the material frame (301) ), the edge of the frame mouth is set in eversion, and a collar (204) is rotatably connected between the mounting plates (203) of the adjacent two groups of the lifting mechanism (2), and the cross-section of the collar (204) is L-shaped, the edge of the frame opening of the material frame (301) is hooked to the collar (204). 4. A kind of high temperature resistant beet red pigment preparation equipment according to claim 1, is characterized in that, described slicing mechanism (1) also comprises support (101), and described chute (102) is inclined and arranged on support (102) 101), the casing (109) is connected to both sides of the bracket (101), the cutter (103) is vertically arranged, the pushing impeller (107) is rotatably connected to the bracket (101), and the The blade of the pusher impeller (107) is provided with a notch matching the cutter (103), the bracket (101) is located at the pusher impeller (107) with a first motor (108), and the first motor (108) The output shaft of the motor (108) is coaxially connected with the pushing impeller (107). 5. A kind of high temperature resistant beet red pigment preparation equipment according to claim 4, is characterized in that, the bottom end middle part of described chute (102) is punched and provided with distribution protrusion (104), described chute (102) 102) Slopes (105) are punched and provided on both sides of the material distribution protrusion (104), and a baffle plate (106) is provided at the end of the chute (102) at the material distribution protrusion (104). 6. A kind of high temperature resistant beet red pigment preparation equipment according to claim 5, is characterized in that, the top end of described shell (109) is located in slope (105) and is provided with feeding port (110), and described A second motor (113) is coaxially mounted on the top of the housing (109), the output shaft of the second motor (113) extends into the housing (109), and the push plate (112) is in an annular array with the second motor (113) output shaft connection. 7. A kind of high temperature resistant beet red pigment preparation equipment according to claim 6, is characterized in that, described casing (109) bottom end is punched and polished to be provided with knife edge (111), and described knife edge (111) is about shell (111) 109) distributed in an annular array, the upper part of the push plate (112) is vertically arranged, and the lower part is bent in a direction away from the cutting edge of the knife edge (111). 8. A high temperature resistant beet red pigment preparation device according to claim 1, wherein one end of the servo-electric slide table (5) away from the slicing mechanism (1) is provided with a material frame (301) for unloading The top wheel (4), both ends of the top wheel (4) are arranged in a concave shape, and the concave radian of the top wheel (4) matches the shape of the material frame (301). 9 . The high temperature resistant beet red pigment preparation equipment according to claim 8 , wherein the bottom of the material frame ( 301 ) is hollow. 10 . 10. a high temperature resistant beet red pigment preparation technology, is characterized in that, according to a kind of high temperature resistant beet red pigment preparation equipment described in any one of claim 1-9, technological process is: S1. Wash the beetroot by ultrasonic waves or manually, and feed the beetroot into the chute (102) through the conveyor belt. The beetroot slides along the chute (102) and encounters the cutter (103), and under the action of sliding inertia, the beetroot is cut into the chute (102). The knife (103) cuts into the beetroot, and the pusher impeller (107) is driven to rotate by the first motor (108), and the blade of the pusher impeller (107) pushes the remaining part of the beetroot to forcibly pass through the cutter (103), so that the beetroot is cut off. Evenly divided into two halves, and the blade avoids the cutter (103) through the notch; S2. The beetroot that is evenly divided into two halves continues to be pushed by the leaves, and smoothly transitions to the material distribution protrusion (104), and is immediately separated by the acute-angled material distribution protrusion (104) at the top. The root petals fall into the casing (109) through the slope (105) and the feeding port (110), and the second motor 113 drives the push plate (112) to push the beetroot petals to forcibly slide over the knife edge (111), and is pushed by the knife edge (111) The cutting edge part of the cutting edge is cut into thin slices; S3. Taking a single beetroot petal as an example, in the early stage of slicing, the cut surface of the beetroot petal fits with the bottom of the shell (109), and the edge part of the beetroot petal is thinner, so that the inclined surface inside the bent part at the bottom of the push plate (112) squeezes Pressing the edge of the beetroot flap, so that when the push plate (112) is pushed flat, a downward force is applied to the beetroot flap at the same time, so that the knife edge (111) can effectively cut the beetroot flap; S4. When slicing is in progress, the lifting mechanism (2) and the material frame (301) are on standby at the bottom of the casing (109), so that the slices fall into the material frame (301). The electric sliding table (5) drives the lifting mechanism (2) and the fully loaded material frame (301) to move toward the material cylinder (3); S5. Add the acid treatment solution into the material tank (3), and put the fully loaded material frame (301) into the material tank (3) through the servo electric slide table (5) and the lifting mechanism (2), so that the acid treatment solution is soaked sliced beetroot; S6. After the acid treatment is completed, first lift the material frame (301), wait for a period of time to drain the acid treatment solution remaining in the material frame (301), and move the material frame (301) to the top wheel (4), so that the material The bottom end of the frame (301) contacts the concave part of the top wheel (4), and is gradually lifted by the top wheel (4). The solid residual material in the frame (301) is poured out, and the acid treatment solution is extracted to carry out subsequent processes such as filtration, purification and drying of the red pigment.

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