A production system for extracting brown pigment from bamboo shoot shell and preparing insoluble dietary fiber

Abstract

The utility model discloses a kind of production system of brown pigment extraction and preparation insoluble dietary fiber, it is related to bamboo shoot shell processing technical field, including bamboo shoot shell processing system, bamboo shoot residue processing system;Bamboo shoot shell processing system includes washing and draining assembly, drying assembly, crushing assembly, extraction assembly, first conveying piece, cleaning spray head, draining spray head;Second conveying piece and heating part are equipped in drying assembly inside;Extraction assembly is externally connected with first neutralizing part, concentration instrument;Bamboo shoot residue processing system includes with second neutralizing part, first stirring part, filter pressing part;Different angle washing is carried out to bamboo shoot shell by high-pressure water flow and using high-pressure airflow to blow water droplet on bamboo shoot shell away, and the bamboo shoot shell is washed and drained quickly, drying assembly carries out drying to bamboo shoot shell, after crushing, bamboo shoot shell is extracted, concentrated to obtain brown pigment, after extraction, bamboo shoot shell filter residue is treated by neutralization stirring, after filter pressing, the filter residue is washed and dried again, crushing is used for preparing insoluble dietary fiber, improve the utilization of bamboo shoot shell.

Description

Technical Field

[0001] This utility model relates to the field of bamboo shoot shell processing technology, specifically to a production system for extracting brown pigment from bamboo shoot shells and preparing insoluble dietary fiber. Background Technology

[0002] Natural pigments are food colorings obtained from natural resources. They are primarily extracted from animal and plant tissues and microorganisms (cultures), with plant-based colorants being the majority. Besides their widespread use in the food industry, these pigments are also widely used as natural dyes in the textile, clothing, and home textile industries. Natural pigments generally originate from natural ingredients, such as bamboo shoot shells, beetroot red, grapes, and chili peppers. These are all pollution-free plants, therefore, natural pigments from these sources are more appealing to consumers and are considered safer to use. Most are derived from plant pigments. Some products using natural pigments have a less artificial appearance, thus appearing closer to a natural form and attracting more consumers. Currently in the European Union, natural pigments are not only taking market share from synthetic pigments but also from some pigment extracts.

[0003] Bamboo shoot shells are rich in phenolic compounds such as brown pigments, making them a good raw material for extracting brown pigments. Brown pigments are one of the natural food colorings and are widely used as colorants in the food, chemical, and pharmaceutical industries. The main raw materials include walnut shells, chestnut shells, camellia seed shells, and hazelnut shells. Extraction methods mainly include organic solvent extraction and acid / alkali extraction. However, these methods all suffer from high costs and low pigment stability. Therefore, for the extraction of brown pigments from bamboo shoot shells, a greener and safer method should be sought. Furthermore, bamboo shoot shells are rich in insoluble dietary fiber, and currently, they are not widely utilized, resulting in a waste of bamboo shoot shell resources. Utility Model Content

[0004] The main purpose of this invention is to provide a production system for extracting brown pigment from bamboo shoot shells and preparing insoluble dietary fiber, which solves the problem of extracting brown pigment from bamboo shoot shells and preparing insoluble dietary fiber.

[0005] To achieve the above objectives, this utility model provides a production system for extracting brown pigment from bamboo shoot shells and preparing insoluble dietary fiber, comprising:

[0006] A bamboo shoot shell processing system includes a washing and draining component, a drying component located at the tail end of the washing and draining component, a pulverizing component connected to the drying component, and an extraction component connected to the pulverizing component. The washing and draining component contains a first conveying element and various washing and draining nozzles with different installation angles. The bamboo shoot shells move under the transmission of the first conveying element, and are washed by high-pressure water jets from the washing nozzles and drained by high-pressure air jets from the draining nozzles. The drying component contains a second conveying element and a heating element. The heating element heats up to dry the bamboo shoot shells under external command, and the shells are then pulverized in the pulverizing component under the transmission of the second conveying element. The extraction component is externally connected to a first neutralizing element to adjust the pH of the extract to neutral. The first neutralizing element is externally connected to a concentrator to concentrate the extract. The extraction component contains a first stirring element, and the first neutralizing element contains a second stirring element.

[0007] The bamboo shoot residue processing system includes a second neutralizing unit connected to the extraction component; the second neutralizing unit is connected to the drying component, and a third stirring component and a filter press are provided inside the second neutralizing unit. A water injection component is provided outside the second neutralizing unit to cooperate with the third stirring component and the filter press to clean the bamboo shoot residue, and the bamboo shoot residue is processed by the drying component and the crushing component for the preparation of insoluble dietary fiber.

[0008] As a further improvement of this utility model, the cleaning and draining assembly includes a support frame and a support shell disposed on the support frame; the first conveying component is disposed inside the support shell; the cleaning nozzle; and the draining nozzle is installed on the inner wall of the support shell.

[0009] As a further improvement of this utility model, the first conveying member is inclinedly disposed in the support shell, and the plane of the end of the first conveying member near the drying component is higher than the plane of the end of the first conveying member away from the drying component, so as to form an immersion zone in the support shell.

[0010] As a further improvement of this utility model, the first conveying member is provided with feeding plates at intervals; the feeding plates are provided with through holes.

[0011] As a further improvement of this utility model, the drying assembly includes a drying chamber communicating with the support shell; the drying chamber is communicating with the pulverizing assembly, and a sealing valve plate is provided between the drying chamber and the support shell and the pulverizing assembly respectively.

[0012] As a further improvement of this utility model, a storage tank is provided between the crushing component and the extraction component; a third conveying component is provided on the storage tank and communicates with the extraction component.

[0013] As a further improvement of this utility model, the first neutralization component includes a first neutralization tank and a pH concentration sensing device disposed inside the first neutralization tank; a first storage tank is disposed outside the first neutralization tank.

[0014] As a further improvement of this utility model, the second neutralization component includes a second neutralization tank and a filter screen disposed on the second neutralization tank; the second neutralization tank is connected to the extraction component, and a sealing ring is provided on the inner wall of the second neutralization tank; the filter press component includes a pushing component disposed on the second neutralization tank and a sealing plate disposed inside the second neutralization tank; a first sealing rubber ring is provided on the sealing plate, and a pressure-applying component is provided on the sealing plate; the pushing component drives the sealing plate to move and abut against the sealing ring under the action of external force; the third stirring component passes through the sealing plate and is located inside the second neutralization tank, and a second sealing rubber ring is provided between the third stirring component and the sealing plate.

[0015] The beneficial effects of this utility model are reflected in:

[0016] By using high-pressure water jets to clean bamboo shoot shells at different angles and using high-pressure airflow to blow away water droplets, the bamboo shoot shells are cleaned and drained quickly. The shells are then dried using a drying assembly. After being crushed, the shells are extracted and concentrated to obtain brown pigment. The extracted bamboo shoot shell residue is then neutralized and stirred. After being pressed, washed, dried, and crushed, the residue is used to prepare insoluble dietary fiber, thereby improving the utilization rate of bamboo shoot shells and reducing resource waste. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a production system for extracting brown pigment from bamboo shoot shells and preparing insoluble dietary fiber according to the present invention.

[0018] Figure 2 This is a schematic diagram of the cleaning and draining component for extracting brown pigment from bamboo shoot shells and preparing insoluble dietary fiber according to the present invention.

[0019] Figure 3 This is a schematic diagram of the extraction component structure for extracting brown pigment from bamboo shoot shells and preparing insoluble dietary fiber according to the present invention.

[0020] Figure 4 This is a schematic diagram of the first neutralizing element for extracting brown pigment from bamboo shoot shells and preparing insoluble dietary fiber according to the present invention.

[0021] Figure 5 This is a schematic diagram of the second neutralizing element for extracting brown pigment from bamboo shoot shells and preparing insoluble dietary fiber according to the present invention.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Cleaning and draining assembly; 101. Support frame; 102. Support shell; 2. Drying assembly; 3. Crushing assembly; 4. Extraction assembly; 401. Extraction tank; 402. Reagent tank; 403. First stirring component; 5. First conveying component; 6. Cleaning nozzle; 7. Draining nozzle; 8. Second conveying component; 9. Heating component; 10. First neutralization component; 1001. First neutralization tank; 1002. pH concentration sensing device; 1003. First storage tank; 11. Concentrator; 12. Second neutralization component; 1201. Second neutralization tank; 1202. Filter screen; 203. Drain pipe; 13. Second agitator; 14. Filter press; 1401. Pusher; 1402. Sealing plate; 15. Water injection component; 1501. Water injection pipe; 1502. Feeding pipe; 16. Feed inlet; 17. Soaking zone; 18. Feeding plate; 19. Third agitator; 20. Drying chamber; 21. Sealing valve plate; 22. Groove; 23. Storage tank; 24. Third conveyor; 25. First liquid storage tank; 26. Sealing ring; 27. First sealing rubber ring; 28. Pressurizing component; 29. ​​Second sealing rubber ring; 30. Mounting hole; 31. Sealing sleeve. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the described embodiments are merely some, not all, of the embodiments of this utility model. Unless otherwise specified, the embodiments and features described in this application can be combined with each other. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0025] In one embodiment, see Figure 1 This utility model discloses a production system for extracting brown pigment from bamboo shoot shells and preparing insoluble dietary fiber, including a bamboo shoot shell processing system and a bamboo shoot residue processing system.

[0026] The bamboo shoot shell processing system includes a washing and draining component 1, a drying component 2 located at the tail end of the washing and draining component 1, a crushing component 3 connected to the drying component 2, and an extraction component 4 connected to the crushing component 3. The washing and draining component 1 contains a first conveying element 5 and various washing nozzles 6 and draining nozzles 7 with different installation angles. The bamboo shoot shells move under the transmission of the first conveying element 5, and are washed by high-pressure water jets sprayed from the washing nozzles 6 and drained by high-pressure air jets sprayed from the draining nozzles 7. The drying component 2 contains a second conveying element 8 and a heating element 9. The heating element 9 heats up under external command to dry the bamboo shoot shells, and the bamboo shoot shells are then transported into the crushing component 3 by the second conveying element 8. The extraction component 4 is pulverized; a first neutralizing element 10 is connected to the outside of the extraction component 4 to adjust the pH value of the extract to be neutral, and a concentrator 11 is connected to the outside of the first neutralizing element 10 to concentrate the extract. The extraction component 4 is equipped with a first stirring element 403, and the first neutralizing element 10 is equipped with a second stirring element 13. The bamboo shoot residue treatment system includes a second neutralizing element 12 connected to the extraction component 4. The second neutralizing element 12 is connected to the drying component 2. The second neutralizing element 12 is equipped with a third stirring element 19 and a filter press 14. A water injection element 15 is provided outside the second neutralizing element 12 to cooperate with the third stirring element 19 and the filter press 14 to clean the bamboo shoot residue. The bamboo shoot residue is then processed by the drying component 2 and the pulverizing component 3 to prepare insoluble dietary fiber.

[0027] Further, see Figure 1 , 2 The cleaning and draining assembly 1 includes a support frame 101, a support shell 102 disposed on the support frame 101, a first conveying member 5 disposed inside the support shell 102, and a cleaning nozzle 6 and a draining nozzle 7 installed on the inner wall of the support shell 102.

[0028] Preferably, the first conveyor 5 adopts a belt conveyor structure, and the drain nozzle 7 is located behind the cleaning nozzle 6.

[0029] Preferably, the cleaning nozzle 6 is connected to an external high-pressure water pump, and the drain nozzle is connected to an external high-pressure air pump; the cleaning nozzle 6 and the drain nozzle 7 are respectively installed on the top inner wall and the two inner walls of the support shell 102, with the cleaning nozzle 6 and the drain nozzle 7 facing the first conveying member 5. The cleaning nozzle 6 and the drain nozzle 7 located at the top of the support shell 102 are installed vertically downwards, and the cleaning nozzle 6 and the drain nozzle 7 located on the two inner walls of the support shell 102 are installed at a 45° angle to the inner wall of the support shell 102.

[0030] Preferably, the support shell 102 is provided with a feed inlet 16.

[0031] Further, see Figure 1 , 2The first conveyor 5 is inclinedly disposed inside the support shell 102. The plane of the end of the first conveyor 5 near the drying component 2 is higher than the plane of the end of the first conveyor 5 away from the drying component 2, so as to form an immersion zone 17 inside the support shell 102.

[0032] Preferably, the height of the plane at the end of the support shell 102 near the feed inlet 16 is lower than the height of the plane at the end of the support shell 102 near the drying component 2, forming an soaking zone 17. After water is injected from the feed inlet 16, the water is stored in the soaking zone 17 because the plane of the support shell 102 below the feed inlet 16 is lower. After the bamboo shoot shells are placed into the support shell 102 from the feed inlet 16, the bamboo shoot shells can be soaked.

[0033] Further, see Figure 2 The first conveyor 5 is provided with feeding plates 18 at intervals, and the feeding plates 18 are provided with through holes.

[0034] Preferably, the two sides of the first conveying member 5 are fitted with the inner wall of the support shell 102 with a clearance, so that the bamboo shoot shell is prevented from falling off the first conveying member 5 by the restriction of the inner walls on both sides of the support shell 102.

[0035] In the above setup, the bamboo shoot shells to be processed enter the support shell 102 through the feed inlet 16 and are then soaked in the soaking zone 17. After soaking, the bamboo shoot shells are conveyed by the first conveyor 5 and move axially along the support shell 102. The bamboo shoot shells first pass through the area where the cleaning nozzle 6 is located. The cleaning nozzle 6 performs high-pressure rinsing on the soaked bamboo shoot shells to remove impurities from the outer wall of the bamboo shoot shells. As the first conveyor 5 moves, the cleaned bamboo shoot shells enter the area where the draining nozzle 7 is located. At this time, the water droplets on the bamboo shoot shells are partially drained by the action of the first conveyor 5, and high-pressure gas is sprayed out by the draining nozzle 7 to blow off the water droplets on the bamboo shoot shells, accelerating the draining of the bamboo shoot shells. After draining, the bamboo shoot shells enter the drying assembly 2 with the first conveyor 5 for drying.

[0036] Further, see Figure 1 , 2 The drying assembly 2 includes a drying chamber 20 that communicates with the support shell 102. The drying chamber 20 is also connected to the crushing assembly 3. A sealing valve plate 21 is provided between the drying chamber 20 and the support shell 102, and between the crushing assembly 3.

[0037] Preferably, the internal space of the drying chamber 20 is larger than the internal space of the support shell 102, and the bottom of the drying chamber 20 is lower than the bottom of the support shell 102.

[0038] Preferably, the second conveyor 8 adopts the conveyor belt structure in the prior art, and the second conveyor 8 is located at the bottom end of the drying chamber 20.

[0039] Preferably, the drying chamber 20 is provided with slots 22 near the top of the support shell 102 and the crushing component 3, respectively. The sealing valve plate 21 is slidably installed in the slots 22, and the drying chamber 20 is provided with an electric push rod connected to the sealing valve plate 21. The electric push rod drives the sealing valve plate 21 to move in the slots 22, thereby realizing the connection or closure between the drying chamber 20 and the support shell 102 and the crushing component 3.

[0040] Preferably, the heating element 9 uses a hot air blower from an existing structure, and the hot air temperature is controlled to be 70℃-90℃ by the hot air blower.

[0041] In the above configuration, the bamboo shoot shells are conveyed to the drying chamber 20 by the first conveyor 5. Inside the drying chamber 20, the electric push rod drives the sealing valve plate 21 to close the drying chamber 20. The hot air blower sends hot air into the drying chamber 20 to dry for 24 hours, thereby drying the bamboo shoot shells. The hot air sent into the drying chamber 20 can also carry the hot air inside the drying chamber 20 out through the gap between the sealing valve plate 21 and the slot 22.

[0042] Further, see Figure 1 A storage tank 23 is provided between the crushing component 3 and the extraction component 4. A third conveying component 24 is provided on the storage tank 23 and is connected to the extraction component 4.

[0043] Preferably, the crushing component 3 adopts an ultrasonic crushing device in the existing structure. After the dried bamboo shoot shells are conveyed into the ultrasonic crushing device by the second conveyor 8, the bamboo shoot shells are crushed into powder, and the powder particle size is controlled to be 80-100 mesh. The material enters the storage tank 23.

[0044] Preferably, the third conveying component 24 adopts a negative pressure suction pump in the existing structure, which conveys the bamboo shoot shell powder in the storage tank 23 to the extraction component 4.

[0045] Preferred, see Figure 3 The extraction component 4 includes an extraction tank 401 and a reagent tank 402 connected to the extraction tank 401. The extraction tank 401 uses existing equipment, and the reagent tank 402 stores sodium hydroxide solution. Meanwhile, the first stirring component 403 includes a stirring rod disposed in the extraction tank 401 and a drive motor disposed on the extraction tank 401. The structure and connection method of the drive motor and the stirring rod are existing technologies. The internal temperature is controlled at 80℃-90℃ through the heating structure inside the extraction tank 401, and the stirring extraction is carried out for 1-2 hours.

[0046] Further, see Figure 1 , 4 The first neutralization unit 10 includes a first neutralization tank 1001, a pH concentration sensing device 1002 disposed inside the first neutralization tank 1001, and a first storage tank 1003 disposed outside the first neutralization tank 1001.

[0047] Preferably, the second stirring element 13 includes a stirring rod disposed in the first neutralization tank 1001 and a drive motor disposed on the first neutralization tank 1001. The drive motor rotates the stirring rod, thereby causing the extract in the first neutralization tank 1001 and the citric acid stored in the first storage tank 1003 to enter the first neutralization tank 1001 for stirring and mixing. The pH value of the extract is monitored by the pH concentration sensing device 1002 and is found to be neutral.

[0048] Preferably, the pH concentration sensing device 1002 and the concentrator 11 are existing structures. The bottom of the first neutralization tank 1001 is provided with a first storage tank 25. In this application, only the functions of the tank itself are used, and no improvement is made to its structure. After the extract is neutral, the extract is concentrated by the concentrator 11 to obtain brown pigment and stored in the first storage tank 25.

[0049] In the above setup, the bamboo shoot shell powder, after being ultrasonically pulverized, enters the storage tank 23 and is transferred to the extraction tank 401 by a negative pressure suction pump. After adding sodium hydroxide solution to the extraction tank 401, the bamboo shoot shell powder is stirred by a stirring rod to accelerate the extraction process. After extraction, the extract is filtered using existing filtration equipment or by setting a filter screen 1202 at the outlet of the extraction tank 401. After filtration, the extract enters the first neutralization tank 1001, where citric acid is added and stirred to make the extract neutral. The extract is then concentrated to obtain brown pigment.

[0050] It should be noted that, in order to ensure the total amount of sodium hydroxide solution added, a flow meter is installed at reagent tank 402 to control the amount of sodium hydroxide solution added.

[0051] Further, see Figure 1 , 5 The second neutralizing component 12 includes a second neutralizing tank 1201 and a filter screen 1202 disposed on the second neutralizing tank 1201. The second neutralizing tank 1201 is connected to the extraction component 4. A sealing ring 26 is provided on the inner wall of the second neutralizing tank 1201. The filter press component 14 includes a pushing component 1401 disposed on the second neutralizing tank 1201 and a sealing plate 1402 disposed inside the second neutralizing tank 1201. A first sealing rubber ring 27 is provided on the sealing plate 1402. A pressurizing component 28 is provided on the sealing plate 1402. The pushing component 1401 drives the sealing plate 1402 to move and abut against the sealing ring 26 under the action of external force. The third stirring component 19 passes through the sealing plate 1402 and is located inside the second neutralizing tank 1201. A second sealing rubber ring 29 is provided between the third stirring component 19 and the sealing plate 1402.

[0052] Preferably, the sealing plate 1402 has a disc-shaped structure, and the outer diameter of the sealing plate 1402 is larger than the inner diameter of the sealing ring 26 but smaller than the inner diameter of the second neutralization tank 1201.

[0053] Preferably, the pusher 1401 is an electric push rod, and the pushing end of the electric push rod is located inside the second neutralization tank 1201 and connected to the sealing plate 1402. Two sets of pushers 1401 are symmetrically arranged to balance the pushing force on the sealing plate 1402.

[0054] Preferably, the pressurizing component 28 includes a pressurizing pipe disposed on the sealing plate 1402, the pressurizing pipe being connected to a high-pressure air pump and the interior of the second neutralization tank 1201.

[0055] Preferably, the water injection component 15 includes a water injection pipe 1501 and a feeding pipe 1502 disposed on the outer wall of the second neutralization tank 1201. The connection positions of the water injection pipe 1501 and the feeding pipe 1502 with the second neutralization tank 1201 are located below the sealing ring 26. The bottom end of the second neutralization tank 1201 is provided with a drain pipe 1203, which is equipped with a solenoid valve and a filter screen.

[0056] Preferably, the third stirring component 19 includes a stirring rod rotatably disposed inside the second neutralization tank 1201 and a drive motor disposed on the second neutralization tank 1201. The stirring structure composed of the stirring rod and the drive motor is prior art and will not be described in detail in this application. It should be noted that a mounting hole 30 is provided in the center of the sealing plate 1402, and the second sealing rubber ring 29 is installed in the mounting hole 30. At the same time, a sealing sleeve 31 with the same plane as the sealing ring 26 is provided on the outer wall of the stirring rod. The outer diameter of the sealing sleeve 31 increases from the end near the top of the second neutralization tank 1201 to the end facing the bottom of the second neutralization tank 1201. The plane where the top of the sealing sleeve 31 is located is higher than the plane where the sealing ring 26 is located. The mounting hole 30 is clearance-fitted with the stirring rod. After the pushing component 1401 provides a pushing force to the sealing plate 1402, causing the sealing plate 1402 to move down and abut against the sealing ring 26, the second sealing rubber ring 29 abuts against the sealing ring 26, thereby sealing the upper part of the second neutralization tank 1201 through the sealing plate 1402 and the sealing ring 26.

[0057] In the above setup, after the bamboo shoot residue in the extraction tank 401 enters the second neutralization tank 1201, it is connected to the first storage tank 1003 through the feeding pipe 1502, thereby adding citric acid to the second neutralization tank 1201 to adjust the pH value to neutral. To control the pH value of the bamboo shoot residue in the second neutralization tank 1201, a pH concentration sensor 1002 needs to be installed in the second neutralization tank 1201 for monitoring. The pushing component 1401 pushes the sealing plate 1402 to abut against the sealing ring 26, thereby sealing the upper end of the second neutralization tank 1201. The high-pressure air pump is turned on to push gas into the first storage tank 1003 below the sealing plate 1402. Inside the second neutralization tank 1201, as the air pressure increases, the liquid in the bamboo shoot residue is pressurized and filtered, and then discharged from the second neutralization tank 1201 through the drain pipe 1203. After there is no liquid in the second neutralization tank 1201 or the amount of liquid flowing out decreases, clean water is injected into the second neutralization tank 1201 through the water injection pipe 1501 by a high-pressure water pump, and the bamboo shoot residue is washed by the rotation of the third stirring element 19. After washing, high-pressure gas is introduced again to filter the bamboo shoot residue. The bamboo shoot residue with water discharged after washing and pressure filtration is sent to the drying component 2 for drying. The dried bamboo shoot residue is then put into the pulverizing device for pulverization to prepare insoluble dietary fiber.

[0058] In this embodiment, the specific implementation steps are as follows:

[0059] (1) After washing and draining the bamboo shoot shells, dry them at a temperature of 70℃-90℃ for 24 hours.

[0060] (2) Crush the dried bamboo shoot shells (so that the material with a particle size of 80-100 mesh enters the storage tank 23);

[0061] (3) The crushed bamboo shoot shell powder enters the storage tank 23;

[0062] (4) The bamboo shoot shell powder in storage tank 23 enters extraction tank 401, sodium hydroxide is added as the extractant, and the mixture is stirred and extracted at 80-90℃ for 1-2 hours;

[0063] (5) After extraction, separation was performed to obtain brown pigment extract and residue;

[0064] (6) The brown pigment extract enters the first neutralization tank 1001, citric acid is added, and the mixture is stirred to neutralize the filtrate until the pH value is neutral. The extract is then concentrated to obtain the brown pigment product.

[0065] (7) The residue produced in step (5) enters the second neutralization tank 1201, citric acid is added for adjustment, the pH value is adjusted to neutral and then filtered, the filter residue is washed, dried and crushed to obtain insoluble dietary fiber.

[0066] In step (1) above, the bamboo shoot shells are dried to reduce their moisture content to less than 10%.

[0067] In step (4) above, the extractant is sodium hydroxide with a mass concentration of 1-2%, and the ratio of material to extractant is 1:20-40.

[0068] In step (6) above, the treated filtrate is concentrated to 1 / 5 of its original volume.

[0069] In steps (6) and (7) above, the added citric acid is solid.

[0070] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A production system for extracting brown pigment from bamboo shoot shells and preparing insoluble dietary fiber, characterized in that, include: The bamboo shoot shell processing system includes a washing and draining component (1), a drying component (2) located at the tail end of the washing and draining component (1), a crushing component (3) connected to the drying component (2), and an extraction component (4) connected to the crushing component (3). The washing and draining component (1) is internally equipped with a first conveying component (5) and various washing nozzles (6) and draining nozzles (7) with different installation angles. The bamboo shoot shells move under the transmission of the first conveying component (5), and are washed by high-pressure water jets sprayed from the washing nozzles (6) and drained by high-pressure air jets sprayed from the draining nozzles (7). The drying component (2) is equipped with a second conveying component (8) and a heating component (9); the heating component (9) heats up to dry the bamboo shoot shells under external command, and the bamboo shoot shells are transported into the crushing component (3) for crushing under the transmission of the second conveying component (8); the extraction component (4) is externally connected to a first neutralizing component (10) to adjust the pH value of the extract to be neutral; the first neutralizing component (10) is externally connected to a concentrator (11) to concentrate the extract; the extraction component (4) is equipped with a first stirring component (403), and the first neutralizing component (10) is equipped with a second stirring component (13) (1004); The bamboo shoot residue processing system includes a second neutralizing component (12) connected to the extraction component (4); the second neutralizing component (12) is connected to the drying component (2), and the second neutralizing component (12) is provided with a third stirring component (19) and a filter press component (14). The second neutralizing component (12) is provided with a water injection component (15) to cooperate with the third stirring component (19) and the filter press component (14) to clean the bamboo shoot residue, and the bamboo shoot residue is processed by the drying component (2) and the crushing component (3) to prepare insoluble dietary fiber.

2. The production system for extracting brown pigment from bamboo shoot shells and preparing insoluble dietary fiber according to claim 1, characterized in that: The cleaning and draining assembly (1) includes a support frame (101) and a support shell (102) disposed on the support frame (101); the first conveying component (5) is disposed inside the support shell (102); the cleaning nozzle (6); and the draining nozzle (7) is installed on the inner wall of the support shell (102).

3. The production system for extracting brown pigment from bamboo shoot shells and preparing insoluble dietary fiber according to claim 2, characterized in that: The first conveyor (5) is inclinedly disposed in the support shell (102). The plane of the end of the first conveyor (5) near the drying component (2) is higher than the plane of the end of the first conveyor (5) away from the drying component (2) so as to form an immersion zone (17) in the support shell (102).

4. The production system for extracting brown pigment from bamboo shoot shells and preparing insoluble dietary fiber according to claim 3, characterized in that: The first conveying component (5) is provided with feeding plates (18) spaced apart; the feeding plates (18) are provided with through holes.

5. The production system for extracting brown pigment from bamboo shoot shells and preparing insoluble dietary fiber according to claim 4, characterized in that: The drying assembly (2) includes a drying chamber (20) connected to the support shell (102); the drying chamber (20) is connected to the crushing assembly (3), and a sealing valve plate (21) is provided between the drying chamber (20) and the support shell (102) and between the crushing assembly (3).

6. The production system for extracting brown pigment from bamboo shoot shells and preparing insoluble dietary fiber according to claim 5, characterized in that: A storage tank (23) is provided between the crushing component (3) and the extraction component; a third conveying component (24) is provided on the storage tank (23) and is connected to the extraction component (4).

7. The production system for extracting brown pigment from bamboo shoot shells and preparing insoluble dietary fiber according to claim 6, characterized in that: The first neutralization component (10) includes a first neutralization tank (1001) and a pH concentration sensing device (1002) disposed inside the first neutralization tank (1001); a first storage tank (1003) is disposed outside the first neutralization tank (1001).

8. The production system for extracting brown pigment from bamboo shoot shells and preparing insoluble dietary fiber according to claim 7, characterized in that: The second neutralization component (12) includes a second neutralization tank (1201) and a filter screen (1202) disposed on the second neutralization tank (1201); the second neutralization tank (1201) is connected to the extraction component (4), and a sealing ring (26) is provided on the inner wall of the second neutralization tank (1201); the filter press component (14) includes a pusher (1401) disposed on the second neutralization tank (1201) and a sealing plate (140) disposed inside the second neutralization tank (1201). 2); The sealing plate (1402) is provided with a first sealing rubber ring (27) and a pressure member (28); the pushing member (1401) drives the sealing plate (1402) to move and abut against the sealing ring (26) under the action of external force; the third stirring member (19) penetrates the sealing plate (1402) and is located in the second neutralization tank (1201), and a second sealing rubber ring (29) is provided between the third stirring member (19) and the sealing plate (1402).

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