CN112156868A - Raw material extraction device and extraction method for degradable polylactic acid fiber production - Google Patents
Raw material extraction device and extraction method for degradable polylactic acid fiber production Download PDFInfo
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- CN112156868A CN112156868A CN202011093924.2A CN202011093924A CN112156868A CN 112156868 A CN112156868 A CN 112156868A CN 202011093924 A CN202011093924 A CN 202011093924A CN 112156868 A CN112156868 A CN 112156868A
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- 238000000605 extraction Methods 0.000 title claims abstract description 33
- 229920000747 poly(lactic acid) Polymers 0.000 title claims abstract description 29
- 239000004626 polylactic acid Substances 0.000 title claims abstract description 29
- 239000002994 raw material Substances 0.000 title claims abstract description 28
- 238000007380 fibre production Methods 0.000 title claims abstract description 12
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims abstract description 50
- 235000017491 Bambusa tulda Nutrition 0.000 claims abstract description 50
- 241001330002 Bambuseae Species 0.000 claims abstract description 50
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims abstract description 50
- 239000011425 bamboo Substances 0.000 claims abstract description 50
- 239000000835 fiber Substances 0.000 claims abstract description 18
- 229920002472 Starch Polymers 0.000 claims abstract description 12
- 235000019698 starch Nutrition 0.000 claims abstract description 12
- 239000008107 starch Substances 0.000 claims abstract description 12
- 238000000227 grinding Methods 0.000 claims description 75
- 238000012216 screening Methods 0.000 claims description 73
- 238000002791 soaking Methods 0.000 claims description 68
- 238000005406 washing Methods 0.000 claims description 63
- 239000000463 material Substances 0.000 claims description 62
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 36
- 239000002893 slag Substances 0.000 claims description 35
- 239000007788 liquid Substances 0.000 claims description 22
- 238000003756 stirring Methods 0.000 claims description 20
- 241001504664 Crossocheilus latius Species 0.000 claims description 19
- 230000005540 biological transmission Effects 0.000 claims description 13
- 238000007599 discharging Methods 0.000 claims description 12
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 claims description 10
- 238000011010 flushing procedure Methods 0.000 claims description 9
- 238000003860 storage Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 5
- 239000002245 particle Substances 0.000 claims description 4
- 238000007873 sieving Methods 0.000 claims description 4
- 239000006228 supernatant Substances 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 239000002002 slurry Substances 0.000 claims description 3
- 239000012634 fragment Substances 0.000 claims description 2
- 239000002699 waste material Substances 0.000 abstract description 3
- 239000000243 solution Substances 0.000 description 15
- 238000007654 immersion Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000013049 sediment Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 235000016068 Berberis vulgaris Nutrition 0.000 description 1
- 241000335053 Beta vulgaris Species 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 241000209140 Triticum Species 0.000 description 1
- 235000021307 Triticum Nutrition 0.000 description 1
- 240000008042 Zea mays Species 0.000 description 1
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 1
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 235000005822 corn Nutrition 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000004310 lactic acid Substances 0.000 description 1
- 235000014655 lactic acid Nutrition 0.000 description 1
- 238000002074 melt spinning Methods 0.000 description 1
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 238000006068 polycondensation reaction Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000012487 rinsing solution Substances 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
- B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
- B02C18/14—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within horizontal containers
- B02C18/142—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within horizontal containers with two or more inter-engaging rotatable cutter assemblies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C15/00—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs
- B02C15/14—Edge runners, e.g. Chile mills
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
- B02C23/14—Separating or sorting of material, associated with crushing or disintegrating with more than one separator
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/02—Cleaning by the force of jets or sprays
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/08—Cleaning involving contact with liquid the liquid having chemical or dissolving effect
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C15/00—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs
- B02C15/14—Edge runners, e.g. Chile mills
- B02C2015/143—Edge runners, e.g. Chile mills each runner pivot carrying more than one runner
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Processing Of Solid Wastes (AREA)
- Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
Abstract
The invention discloses a raw material extraction device and an extraction method for degradable polylactic acid fiber production. According to the invention, the treatment of bamboo shoots, tender bamboo leaves or tender bamboo branches can be effectively realized, the starch in the bamboo shoots, tender bamboo leaves or tender bamboo branches is obtained, the waste of the bamboo is convenient to utilize, the degradable polylactic acid fiber is convenient to produce subsequently, the cost is convenient to save, and the benefit is improved.
Description
Technical Field
The invention relates to the technical field of polylactic acid fibers, in particular to a raw material extraction device for producing degradable polylactic acid fibers, and simultaneously relates to an extraction method of raw materials for producing degradable polylactic acid fibers.
Background
The polylactic acid fiber is mainly prepared by taking agricultural products containing starch, such as corn, wheat, beet and the like, as raw materials, fermenting the raw materials to generate lactic acid, and then performing polycondensation and melt spinning. The polylactic acid fiber is a synthetic fiber which can be planted as a raw material and is easy to plant, and the waste can be naturally degraded in nature. It can be decomposed into carbon dioxide and water by the action of microbes in soil or seawater, and when it is burnt, it does not emit toxic gas and cause pollution, so that it is a sustainable ecological fibre. The fabric has good hand feeling and drapability, is ultraviolet resistant, has lower flammability and excellent processing performance, is suitable for various fashionable dress, leisure wear, sports goods, sanitary goods and the like, and has wide application prospect.
The bamboo shoots, the tender bamboo leaves or the tender bamboo branches contain starch, and the starch cannot be utilized generally in the bamboo processing process, and can be used as a raw material for producing polylactic acid fiber to reduce the waste of bamboo.
The existing extraction device generally carries out multiple processes such as crushing, pickling, coarse grinding, fine grinding and screening on bamboo shoots, tender bamboo leaves or tender bamboo branches in the using process, but in the extraction process, the overall extraction effect is poor, the subsequent extraction of starch is influenced, and then the production of subsequent polylactic acid fibers is influenced.
Disclosure of Invention
Technical problem to be solved
The invention can solve the problems that the prior extraction device has poor extraction effect and less starch extraction amount, and influences the production of the subsequent degradable polylactic acid fiber.
(II) technical scheme
In order to achieve the above object, the present invention adopts the following technical solutions, and a raw material extraction apparatus for producing degradable polylactic acid fibers comprises a crushing assembly, a soaking assembly, a grinding assembly and a screening assembly, wherein the crushing assembly is installed on the upper portion of the soaking assembly, the grinding assembly is connected with the soaking assembly through a belt conveyor, and the screening assembly is installed on the lower portion of the grinding assembly, wherein:
the crushing assembly comprises a storage bin, two crushing motors and two knife rolls, the two crushing motors are both arranged on the side wall of the storage bin, the two knife rolls are respectively and rotatably arranged between the inner walls of the storage bin, and the two knife rolls are respectively in transmission connection with the output ends of the two crushing motors;
the soaking assembly comprises a support frame, a soaking box, a flushing piece and a material guiding piece, a gate is installed at the lower side part of the soaking box, the soaking box is installed at the upper part of the support frame, the stock bin is installed at the upper part of the soaking box, the lower part of the stock bin is communicated with the soaking box, the flushing piece is installed at the side part of the soaking box, the material guiding piece is installed at the side part of the soaking box, and the material guiding piece is positioned at the lower part of the gate;
the grinding assembly comprises a grinding cylinder, a grinding motor, a grinding disc and a stone roller, the grinding cylinder is connected with the material guide part through a conveying belt, the grinding disc is installed in the center of the inside of the grinding cylinder, the grinding motor is installed on the upper portion of the grinding cylinder, a transmission shaft is installed at the output end of the grinding motor, a support is installed on the side portion of the transmission shaft, the stone roller is rotatably installed on the side portion of the support, and the lower wall of the stone roller is attached to the upper wall of the grinding disc;
the screening subassembly is including screening jar, first shale shaker, washing sediment spare and second shale shaker, the grinding vessel install in the upper portion of screening jar, first shale shaker install in the inside of screening jar, the second shale shaker install in the inside of screening jar, the feed end of washing sediment spare respectively with the screening jar is close to first shale shaker with the lateral part of second shale shaker links to each other, the discharge end of washing sediment spare with the screening jar is close to first shale shaker with position between the second shale shaker links to each other.
As a preferable technical scheme of the invention, the two knife rolls are oppositely arranged, and the rotating directions of the two knife rolls are opposite.
In a preferred embodiment of the present invention, a liquid supply pipe is connected to an upper portion of the immersion tank, and a liquid discharge pipe is connected to a lower portion of the immersion tank.
As a preferable technical solution of the present invention, the flushing member includes a water guide pipe, a main pipe, a branch pipe and a nozzle, the water guide pipe is connected to a side portion of the immersion tank, the main pipe is connected to a water outlet end of the water guide pipe, the branch pipe is connected to a side portion of the main pipe, the branch pipe extends into the immersion tank, and the nozzle is installed at a side portion of the branch pipe.
As a preferable technical scheme of the invention, the main pipe is arranged in a rectangular ring shape, and the outer wall of the soaking box is sleeved with the main pipe.
As a preferable technical scheme of the invention, the material guiding member comprises a material guiding plate and two limiting plates, the material guiding plate is connected to the side part of the soaking box adjacent to the gate, the two limiting plates are symmetrically arranged on the upper wall of the material guiding plate, and the material guiding plate is inclined 30-45 degrees below the horizontal plane.
As a preferable technical scheme of the invention, the lower part of the screening tank is arranged in a funnel shape, the side part of the screening tank is provided with a material level meter, the lower side part of the screening tank is provided with a material guide pipe, and the middle part of the material guide pipe is provided with an electric regulating valve.
As a preferable technical scheme of the invention, the slag washing piece comprises a slag washing tank, a first feeding pipe, a second feeding pipe, a stirring motor, a stirring blade, a water pump, a return pipe and a shower head, wherein a water inlet pipe is installed at the side part of the slag washing tank, the first feeding pipe and the second feeding pipe are both connected to the side part of the slag washing tank, the feeding end of the first feeding pipe and the screening tank are close to the side part of the first vibrating screen, the feeding end of the second feeding pipe and the screening tank are close to the side part of the second vibrating screen, the stirring motor is installed at the upper part of the slag washing tank, the stirring blade is installed at the output end of the stirring motor, the stirring blade extends into the slag washing tank, the liquid inlet end of the water pump is communicated with the slag washing tank, the return pipe is installed at the liquid outlet end of the water pump, and the return pipe is connected with the screening tank close to the position between the first vibrating screen and the second vibrating screen, the gondola water faucet install in the play liquid end of back flow, the gondola water faucet is in the inside of screening jar.
In addition, the invention also provides a device and a method for extracting the raw materials for producing the degradable polylactic acid fibers, which specifically comprise the following steps:
s1, crushing the raw materials, namely putting the bamboo shoots, the tender bamboo leaves or the tender bamboo branches into a crushing assembly, driving a knife roller to rotate by using the operation of a crushing motor, crushing the bamboo shoots, the tender bamboo leaves or the tender bamboo branches, and dropping the crushed materials into a soaking box under the dead weight;
s2, soaking, namely introducing a sulfurous acid solution with the temperature of 40-60 ℃ into a soaking box, soaking the filtered materials for 48-72 hours, then discharging the sulfurous acid solution, washing the materials by using a washing piece, discharging washing water after washing, then opening a gate, and conveying the soaked materials to a grinding assembly through a conveying belt;
s3, grinding, wherein the soaked materials fall onto the upper part of a grinding disc, a grinding motor is operated at the speed of 35r/min-60r/min, the operation of the grinding motor drives a transmission shaft and a bracket to rotate so as to drive a stone roller to rotate, the rotating stone roller is matched with the grinding disc to grind the materials and support bamboo pulp, and the bamboo pulp falls onto a sieve assembly under the dead weight;
s4, screening, namely, enabling the bamboo pulp to fall on a first vibrating screen of 15-20 meshes for primary screening, then fall on a second vibrating screen of 70-80 meshes for secondary screening, enabling large particles after screening to enter a slag washing piece for washing for at least five times, enabling liquid generated by washing to be introduced into a screening tank again, assisting the vibrating screen of the second vibrating screen, collecting slurry screened by the screening tank, standing for 12-18 h, skimming a supernatant, and drying the remainder to obtain the starch.
(III) advantageous effects
1. The crushing component of the raw material extraction device for producing the degradable polylactic acid fiber comprises a stock bin, two crushing motors and two knife rolls, the knife rolls are driven to rotate by the operation of the crushing motors, and the two knife rolls are matched to crush bamboo shoots, tender bamboo leaves or tender bamboo branches, so that the contact area of the bamboo shoots, tender bamboo leaves or tender bamboo branches with a soaking solution is increased, and the subsequent soaking is facilitated;
2. the invention provides a raw material extraction device for producing degradable polylactic acid fibers, which comprises a soaking assembly, a soaking box, a washing part and a material guiding part, wherein a sulfurous acid solution is introduced into the soaking box to soak filtered materials, then the sulfurous acid solution is discharged, the materials are washed by the washing part, the washing water is discharged after washing, then a gate is opened, the soaked materials are discharged, and the soaking by the sulfurous acid solution is used for treating chatty, so that the subsequent starch is conveniently discharged;
3. the invention provides a raw material extraction device for degradable polylactic acid fiber production, wherein a grinding assembly comprises a grinding cylinder, a grinding motor, a grinding disc and a stone roller, the grinding motor is operated to drive a transmission shaft and a bracket to rotate so as to drive the stone roller to rotate, and the rotating stone roller is matched with the grinding disc to grind materials to prepare bamboo pulp, so that subsequent starch extraction is facilitated;
4. the invention discloses a raw material extraction device for producing degradable polylactic acid fibers, which comprises a screening component, a first vibrating screen, a slag washing part and a second vibrating screen, wherein bamboo pulp falls onto the first vibrating screen firstly for primary screening, then falls onto the second vibrating screen again for secondary screening, large particles after screening enter the slag washing part for washing for at least five times, liquid generated by washing is introduced into the screening tank again to assist the vibrating screen of the second vibrating screen, pulp screened by the screening tank is collected, supernatant is skimmed after standing, and residues are dried to obtain starch.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a front cross-sectional schematic view of the present invention;
FIG. 2 is a schematic sectional top view of a portion of the construction of the crushing motor of the present invention;
FIG. 3 is a schematic sectional front view of a portion of the soaking assembly of the present invention;
FIG. 4 is a schematic sectional top view of a partial structure of the main tube of the present invention;
figure 5 is a schematic plan view of the arrangement of the baffle plate and the position limiting plate portions of the invention;
FIG. 6 is a schematic sectional front view of a portion of the abrasive assembly of the present invention;
FIG. 7 is a schematic sectional front view of the screening tank and slag washing component of the present invention.
In the figure: 100. a crushing assembly; 110. a storage bin; 120. a crushing motor; 130. a knife roll; 200. a soaking component; 210. a support frame; 220. a soaking box; 221. a liquid supplementing pipe; 222. a liquid discharge pipe; 230. a flushing member; 231. a water conduit; 232. a main pipe; 233. a branch pipe; 234. a nozzle; 240. a material guide member; 241. a material guide plate; 242. a limiting plate; 250. a gate; 300. a grinding assembly; 310. a grinding cylinder; 320. grinding the motor; 330. a grinding disc; 340. a stone roller; 350. a drive shaft; 360. a support; 400. a screen assembly; 410. a screening tank; 411. a level gauge; 412. a material guide pipe; 413. an electric control valve; 420. a first vibrating screen; 430. washing slag parts; 431. a slag washing tank; 432. a first feed tube; 433. a second feed tube; 434. a stirring motor; 435. a stirring blade; 436. a water pump; 437. a return pipe; 438. a shower head; 439. a water inlet pipe; 440. a second vibrating screen.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it is to be understood that the terms "longitudinal", "upper", "lower", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
As shown in fig. 1 to 7, a raw material extraction apparatus for producing degradable polylactic acid fiber comprises a crushing assembly 100, a soaking assembly 200, a grinding assembly 300 and a sieving assembly 400, wherein the crushing assembly 100 is installed at the upper part of the soaking assembly 200, the grinding assembly 300 is connected with the soaking assembly 200 through a belt conveyor, and the sieving assembly 400 is installed at the lower part of the grinding assembly 300, wherein:
the crushing assembly 100 comprises a bin 110, two crushing motors 120 and two knife rolls 130, wherein the two crushing motors 120 are both arranged on the side wall of the bin 110, the two knife rolls 130 are respectively rotatably arranged between the inner walls of the bin 110, and the two knife rolls 130 are respectively in transmission connection with the output ends of the two crushing motors 120;
the soaking assembly 200 comprises a supporting frame 210, a soaking box 220, a flushing piece 230 and a material guiding piece 240, wherein a gate 250 is installed at the lower side part of the soaking box 220, the soaking box 220 is installed at the upper part of the supporting frame 210, a stock bin 110 is installed at the upper part of the soaking box 220, the lower part of the stock bin 110 is communicated with the soaking box 220, the flushing piece 230 is installed at the side part of the soaking box 220, the material guiding piece 240 is installed at the side part of the soaking box 220, and the material guiding piece 240 is positioned at the lower part of the gate 250;
the grinding assembly 300 comprises a grinding cylinder 310, a grinding motor 320, a grinding disc 330 and a stone roller 340, wherein the grinding cylinder 310 is connected with the material guiding member 240 through a conveying belt, the grinding disc 330 is installed in the inner center of the grinding cylinder 310, the grinding motor 320 is installed at the upper part of the grinding cylinder 310, the output end of the grinding motor 320 is provided with a transmission shaft 350, the side part of the transmission shaft 350 is provided with a bracket 360, the stone roller 340 is rotatably installed at the side part of the bracket 360, and the lower wall of the stone roller 340 is attached to the upper wall of the grinding disc 330;
the screening assembly 400 comprises a screening tank 410, a first vibrating screen 420, a slag washing part 430 and a second vibrating screen 440, wherein the grinding cylinder 310 is installed at the upper part of the screening tank 410, the first vibrating screen 420 is installed inside the screening tank 410, the second vibrating screen 440 is installed inside the screening tank 410, the feeding end of the slag washing part 430 is respectively connected with the side part of the screening tank 410 adjacent to the first vibrating screen 420 and the second vibrating screen 440, and the discharging end of the slag washing part 430 is connected with the part of the screening tank 410 adjacent to the position between the first vibrating screen 420 and the second vibrating screen 440.
Specifically, the two knife rolls 130 are arranged oppositely, the rotating directions of the two knife rolls 130 are opposite, and the two knife rolls 130 with opposite rotating directions can effectively crush by adopting a relative extrusion crushing mode.
Specifically, a liquid replenishing pipe 221 is connected to the upper side portion of the soaking tank 220, a liquid discharging pipe 222 is connected to the lower side portion of the soaking tank 220, the liquid replenishing pipe 221 is used for replenishing the sulfurous acid solution, and the liquid discharging pipe 222 is used for discharging the soaking solution and/or the rinsing solution.
Specifically, the flushing part 230 comprises a water guide pipe 231, a main pipe 232, branch pipes 233 and nozzles 234, the water guide pipe 231 is connected to the side portion of the soaking tank 220, the main pipe 232 is connected to the water outlet end of the water guide pipe 231, the branch pipes 233 are connected to the side portion of the main pipe 232, the branch pipes 233 extend into the soaking tank 220, the nozzles 234 are installed on the side portion of the branch pipes 233, the main pipe 232 is arranged in a rectangular ring shape, the main pipe 232 is sleeved on the outer wall of the soaking tank 220, clean water is introduced through the water guide pipe 231, enters the branch pipes 233 through the main pipe 232 and is sprayed out of the nozzles 234, and then the soaked material is flushed.
Specifically, the material guiding member 240 includes a material guiding plate 241 and two position limiting plates 242, the material guiding plate 241 is connected to the side portion of the soaking tank 220 adjacent to the gate 250, the two position limiting plates 242 are symmetrically arranged on the upper wall of the material guiding plate 241, the material guiding plate 241 is inclined 30 degrees to 45 degrees below the horizontal plane, and the material guiding plate 241 is used for guiding the material.
Specifically, the lower part of screening jar 410 is the infundibulate setting, and level indicator 411 is installed to the lateral part of screening jar 410, and level indicator 411 is used for detecting the material level, and the passage 412 is installed to the lower lateral part of screening jar 410, and the electric control valve 413 is installed to the mid-mounting of passage 412, and the passage 412 is used for the discharge of the material after the screening.
Specifically, the slag washing member 430 comprises a slag washing tank 431, a first feeding pipe 432, a second feeding pipe 433, a stirring motor 434, a stirring blade 435, a water pump 436, a return pipe 437 and a shower head 438, wherein a water inlet pipe 439 is installed at the side of the slag washing tank 431, the first feeding pipe 432 and the second feeding pipe 433 are both connected to the side of the slag washing tank 431, a feeding end of the first feeding pipe 432 and a side of the screening tank 410 adjacent to the first vibrating screen 420, a feeding end of the second feeding pipe 433 and a side of the screening tank 410 adjacent to the second vibrating screen 440, the stirring motor 434 is installed at the upper part of the slag washing tank 431, the stirring blade 435 is installed at an output end of the stirring motor 434, the stirring blade 435 extends into the interior of the slag washing tank 431, a liquid inlet end of the water pump 436 is communicated with the slag washing tank 431, the return pipe 437 is installed at a liquid outlet end of the water pump 436, the return pipe 437 is connected with the screening tank, the shower head 438 is installed at the outlet end of the return pipe 437, and the shower head 438 is positioned inside the screening tank 410.
In addition, the invention also provides an extraction method of the raw material for producing the degradable polylactic acid fiber, which comprises the following steps:
s1, crushing the raw materials, namely putting the bamboo shoots, the tender bamboo leaves or the tender bamboo branches into a crushing assembly 100, driving a knife roller 130 to rotate by using the operation of a crushing motor 120, crushing the bamboo shoots, the tender bamboo leaves or the tender bamboo branches into strip-shaped fragments of 4-7 cm, and dropping the crushed materials into a soaking box 220 under the dead weight;
s2, soaking, namely introducing a sulfurous acid solution with the temperature of 40-60 ℃ into the soaking box 220, soaking the filtered materials for 48-72 h, then discharging the sulfurous acid solution, washing the materials by using the washing piece 230, discharging washing water after washing, then opening the gate 250, and conveying the soaked materials to the grinding assembly 300 through a conveying belt;
s3, grinding, wherein the soaked materials fall onto the upper part of the grinding disc 330, the grinding motor 320 is operated at the speed of 35r/min-60r/min, the transmission shaft 350 and the bracket 360 are driven to rotate by the operation of the grinding motor 320, the stone roller 340 is further driven to rotate, the rotating stone roller 340 is matched with the grinding disc 330, the materials are ground into bamboo pulp, and the bamboo pulp falls onto the screening assembly 400 under the self weight;
s4, screening, namely, falling the bamboo pulp onto a first vibrating screen 420 with 15-20 meshes for primary screening, then falling onto a second vibrating screen 440 with 70-80 meshes for secondary screening, feeding the large particles after screening into a slag washing piece 430 for washing for at least five times, feeding the liquid generated by washing into a screening tank 410 again, assisting the vibrating screen of the second vibrating screen 440, collecting the slurry screened by the screening tank 410, standing for 12-18 h, skimming the supernatant, and drying the remainder to obtain the starch.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A degradable polylactic acid fibre is raw and other materials extraction element for production, includes broken subassembly (100), soaks subassembly (200), grinding component (300) and screening subassembly (400), its characterized in that: the crushing assembly (100) is installed at the upper part of the soaking assembly (200), the grinding assembly (300) is connected with the soaking assembly (200) through a belt conveyor, the screening assembly (400) is installed at the lower part of the grinding assembly (300), wherein:
the crushing assembly (100) comprises a storage bin (110), two crushing motors (120) and two knife rolls (130), wherein the two crushing motors (120) are arranged on the side wall of the storage bin (110), the two knife rolls (130) are respectively rotatably arranged between the inner walls of the storage bin (110), and the two knife rolls (130) are respectively in transmission connection with the output ends of the two crushing motors (120);
the soaking assembly (200) comprises a supporting frame (210), a soaking box (220), a flushing piece (230) and a material guiding piece (240), a gate (250) is installed at the lower side part of the soaking box (220), the soaking box (220) is installed at the upper part of the supporting frame (210), the bin (110) is installed at the upper part of the soaking box (220), the lower part of the bin (110) is communicated with the soaking box (220), the flushing piece (230) is installed at the side part of the soaking box (220), the material guiding piece (240) is installed at the side part of the soaking box (220), and the material guiding piece (240) is located at the lower part of the gate (250);
the grinding assembly (300) comprises a grinding cylinder (310), a grinding motor (320), a grinding disc (330) and a stone roller (340), wherein the grinding cylinder (310) is connected with the material guide member (240) through a conveying belt, the grinding disc (330) is installed in the inner center of the grinding cylinder (310), the grinding motor (320) is installed on the upper portion of the grinding cylinder (310), a transmission shaft (350) is installed at the output end of the grinding motor (320), a bracket (360) is installed on the side portion of the transmission shaft (350), the stone roller (340) is rotatably installed on the side portion of the bracket (360), and the lower wall of the stone roller (340) is attached to the upper wall of the grinding disc (330);
the screening assembly (400) comprises a screening tank (410), a first vibrating screen (420), a slag washing piece (430) and a second vibrating screen (440), the grinding cylinder (310) is installed on the upper portion of the screening tank (410), the first vibrating screen (420) is installed inside the screening tank (410), the second vibrating screen (440) is installed inside the screening tank (410), the feeding end of the slag washing piece (430) is adjacent to the screening tank (410) through the first vibrating screen (420) and the side portion of the second vibrating screen (440) respectively, and the discharging end of the slag washing piece (430) is adjacent to the screening tank (410) through the first vibrating screen (420) and the second vibrating screen (440) between the positions.
2. The raw material extraction device for degradable polylactic acid fiber production according to claim 1, wherein: the two knife rollers (130) are oppositely arranged, and the rotating directions of the two knife rollers (130) are opposite.
3. The raw material extraction device for degradable polylactic acid fiber production according to claim 1, wherein: a liquid replenishing pipe (221) is connected to the upper side of the soaking tank (220), and a liquid discharging pipe (222) is connected to the lower side of the soaking tank (220).
4. The raw material extraction device for degradable polylactic acid fiber production according to claim 1, wherein: the washing part (230) comprises a water guide pipe (231), a main pipe (232), a branch pipe (233) and a nozzle (234), the water guide pipe (231) is connected to the side part of the soaking tank (220), the main pipe (232) is connected to the water outlet end of the water guide pipe (231), the branch pipe (233) is connected to the side part of the main pipe (232), the branch pipe (233) extends into the soaking tank (220), and the nozzle (234) is installed on the side part of the branch pipe (233).
5. The raw material extraction device for degradable polylactic acid fiber production according to claim 4, wherein: the main pipe (232) is arranged in a rectangular ring mode, and the outer wall of the soaking box (220) is sleeved with the main pipe (232).
6. The raw material extraction device for degradable polylactic acid fiber production according to claim 1, wherein: the material guiding member (240) comprises a material guiding plate (241) and two limiting plates (242), the material guiding plate (241) is connected to the side portion, adjacent to the gate (250), of the soaking tank (220), the two limiting plates (242) are symmetrically arranged on the upper wall of the material guiding plate (241), and the material guiding plate (241) is inclined to the position 30-45 degrees below the horizontal plane.
7. The raw material extraction device for degradable polylactic acid fiber production according to claim 1, wherein: the lower part of screening jar (410) is the infundibulate setting, charge level indicator (411) are installed to the lateral part of screening jar (410), passage (412) are installed to the lower lateral part of screening jar (410), the mid-mounting of passage (412) has electrical control valve (413).
8. The raw material extraction device for degradable polylactic acid fiber production according to claim 1, wherein: the slag washing piece (430) comprises a slag washing tank (431), a first feeding pipe (432), a second feeding pipe (433), a stirring motor (434), a stirring blade (435), a water pump (436), a return pipe (437) and a shower head (438), wherein a water inlet pipe (439) is installed at the side part of the slag washing tank (431), the first feeding pipe (432) and the second feeding pipe (433) are both connected to the side part of the slag washing tank (431), the feeding end of the first feeding pipe (432) is adjacent to the side part of the first vibrating screen (420) with the screening tank (410), the feeding end of the second feeding pipe (433) is adjacent to the side part of the second vibrating screen (440) with the screening tank (410), the stirring motor (434) is installed at the upper part of the slag washing tank (431), the stirring blade (435) is installed at the output end of the stirring motor (434), and the stirring blade (435) extends into the inside of the slag washing tank (431), the liquid inlet end of the water pump (436) is communicated with the slag washing tank (431), the return pipe (437) is installed at the liquid outlet end of the water pump (436), the return pipe (437) is connected with the sieving tank (410) at a position adjacent to the position between the first vibrating screen (420) and the second vibrating screen (440), the shower head (438) is installed at the liquid outlet end of the return pipe (437), and the shower head (438) is positioned inside the sieving tank (410).
9. A degradable polylactic acid fiber production uses raw materials extraction element and extraction method, characterized by that: the method specifically comprises the following steps:
s1, crushing the raw materials, namely putting the bamboo shoots, the tender bamboo leaves or the tender bamboo branches into a crushing assembly, driving a knife roller to rotate by using the operation of a crushing motor, crushing the bamboo shoots, the tender bamboo leaves or the tender bamboo branches into strip-shaped fragments of 4-7 cm, and dropping the crushed materials into a soaking box under the dead weight;
s2, soaking, namely introducing a sulfurous acid solution with the temperature of 40-60 ℃ into a soaking box, soaking the filtered materials for 48-72 hours, then discharging the sulfurous acid solution, washing the materials by using a washing piece, discharging washing water after washing, then opening a gate, and conveying the soaked materials to a grinding assembly through a conveying belt;
s3, grinding, wherein the soaked materials fall onto the upper part of a grinding disc, a grinding motor is operated at the speed of 35r/min-60r/min, the operation of the grinding motor drives a transmission shaft and a bracket to rotate so as to drive a stone roller to rotate, the rotating stone roller is matched with the grinding disc to grind the materials into bamboo pulp, and the bamboo pulp falls onto a sieve component under the self weight;
s4, screening, namely, enabling the bamboo pulp to fall on a first vibrating screen of 15-20 meshes for primary screening, then fall on a second vibrating screen of 70-80 meshes for secondary screening, enabling large particles after screening to enter a slag washing piece for washing for at least five times, enabling liquid generated by washing to be introduced into a screening tank again, assisting the vibrating screen of the second vibrating screen, collecting slurry screened by the screening tank, standing for 12-18 h, skimming a supernatant, and drying the remainder to obtain the starch.
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