CN111282912B - High-efficient ultrasonic cleaner for agricultural product - Google Patents

High-efficient ultrasonic cleaner for agricultural product Download PDF

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CN111282912B
CN111282912B CN202010085378.1A CN202010085378A CN111282912B CN 111282912 B CN111282912 B CN 111282912B CN 202010085378 A CN202010085378 A CN 202010085378A CN 111282912 B CN111282912 B CN 111282912B
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parts
cleaning
cleaning tank
layer
agricultural products
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CN111282912A (en
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刘顺字
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    • 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
    • B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
    • B08B3/12—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration by sonic or ultrasonic vibrations
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
    • A23L5/00—Preparation or treatment of foods or foodstuffs, in general; Food or foodstuffs obtained thereby; Materials therefor
    • A23L5/20—Removal of unwanted matter, e.g. deodorisation or detoxification
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23N—MACHINES OR APPARATUS FOR TREATING HARVESTED FRUIT, VEGETABLES OR FLOWER BULBS IN BULK, NOT OTHERWISE PROVIDED FOR; PEELING VEGETABLES OR FRUIT IN BULK; APPARATUS FOR PREPARING ANIMAL FEEDING- STUFFS
    • A23N12/00—Machines for cleaning, blanching, drying or roasting fruits or vegetables, e.g. coffee, cocoa, nuts
    • A23N12/02—Machines for cleaning, blanching, drying or roasting fruits or vegetables, e.g. coffee, cocoa, nuts for washing or blanching
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B13/00—Accessories or details of general applicability for machines or apparatus for cleaning
    • 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
    • B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
    • B08B3/14—Removing waste, e.g. labels, from cleaning liquid; Regenerating cleaning liquids
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00—Multistage treatment of water, waste water or sewage
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F1/00—General methods for the manufacture of artificial filaments or the like
    • D01F1/02—Addition of substances to the spinning solution or to the melt
    • D01F1/10—Other agents for modifying properties
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
    • D01F8/02—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from cellulose, cellulose derivatives, or proteins
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
    • D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
    • D01F8/06—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyolefin as constituent
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
    • D01F8/18—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from other substances
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/28—Treatment of water, waste water, or sewage by sorption
    • C02F1/288—Treatment of water, waste water, or sewage by sorption using composite sorbents, e.g. coated, impregnated, multi-layered
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
    • C02F2001/425—Treatment of water, waste water, or sewage by ion-exchange using cation exchangers
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
    • C02F5/08—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
    • C02F5/10—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/90—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in food processing or handling, e.g. food conservation

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Textile Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Polymers & Plastics (AREA)
  • Health & Medical Sciences (AREA)
  • Food Science & Technology (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Nutrition Science (AREA)
  • Toxicology (AREA)
  • Manufacturing & Machinery (AREA)
  • Water Treatment By Sorption (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)

Abstract

The invention discloses an efficient ultrasonic cleaning machine for agricultural products, which comprises a cleaning bin and a water storage bin communicated with the cleaning bin, wherein the cleaning bin comprises a cleaning tank, a jet device arranged in the middle of the interior of the cleaning tank, a high-pressure pump arranged below the cleaning tank and connected with the jet device, an ultrasonic device arranged at the bottom of the cleaning tank and an ultraviolet sterilizer arranged at the top of the cleaning tank; a filtering cavity is arranged at the communication position of the water storage bin and the cleaning bin, and an active carbon filtering layer, an HEPA filtering layer, a PP cotton filtering layer and a cation exchange resin layer are arranged in the filtering cavity; this ultrasonic cleaner simple structure, convenient to use can fully the efficient clear away agricultural product surface filth and pesticide residue, and the disinfection of disinfecting especially is good to the inconvenient agricultural product cleaning performance of washing such as leafy vegetable, cherry tomato, strawberry, dipper, can also the using water wisely simultaneously, and is safe environmental protection.

Description

High-efficient ultrasonic cleaner for agricultural product
Technical Field
The invention relates to an efficient ultrasonic cleaning machine for agricultural products.
Background
The agricultural products refer to agricultural primary products, namely, plants, animals, microorganisms and products thereof obtained in agricultural activities, and when many agricultural products are processed, the agricultural products need to be cleaned firstly, and dust and soil attached to the surfaces of the agricultural products need to be cleaned. The existing agricultural product cleaning is usually carried out by manual cleaning or large-scale cleaning equipment, but the cleaning by the means has the following defects that the manual cleaning efficiency is low, a large amount of manpower and material resources are needed, and the pesticide residues on the surfaces of agricultural products such as leaf vegetables, cherry tomatoes, strawberries, grapes and the like cannot be thoroughly removed manually; the large-scale cleaning equipment has a complex structure and high cost, is not suitable for being used by farmers and families, is easy to damage the surfaces of agricultural products such as leafy vegetables, cherry tomatoes, strawberries and grapes during cleaning, and is not thorough enough to clean both by adopting manual cleaning and large-scale cleaning equipment, so that water waste is easily caused.
In view of this, it is necessary to provide a cleaning machine for agricultural products, which has a simple structure, is convenient to use, can sufficiently and efficiently remove dirt and pesticide residues on the surfaces of the agricultural products, particularly has a good cleaning effect on agricultural products such as leafy vegetables, cherry tomatoes, strawberries and grapes, which are inconvenient to clean, and can save water.
Disclosure of Invention
In view of the above, the invention aims to provide an ultrasonic cleaner for agricultural products, which has a simple structure, is convenient to use, can fully and efficiently clean dirt and pesticide residues on the surfaces of the agricultural products, sterilize and disinfect the agricultural products, particularly has a good cleaning effect on the agricultural products inconvenient to clean such as leafy vegetables, cherry tomatoes, strawberries and grapes, can save water, and meets the requirements of safety and environmental protection.
In order to solve the technical problems, the technical scheme of the invention is as follows:
an efficient ultrasonic cleaning machine for agricultural products comprises a cleaning bin and a water storage bin communicated with the cleaning bin, wherein the cleaning bin comprises a cleaning tank, a jet device arranged in the middle of the interior of the cleaning tank, a high-pressure pump arranged below the cleaning tank and connected with the jet device, an ultrasonic device arranged at the bottom of the cleaning tank and an ultraviolet sterilizer arranged at the top of the cleaning tank; the water storage bin is provided with the filter chamber with washing storehouse intercommunication department, be provided with active carbon filter layer, HEPA filter layer, the cotton filter core layer of PP and cation exchange resin layer in the filter chamber.
Preferably, the side wall of the interior of the cleaning tank is provided with a cleaning brush, the cleaning brush is made of a soft material, the cleaning brush can clean stains on the agricultural products, and the soft material cannot damage the surfaces of the agricultural products.
Preferably, a base is arranged below the cleaning tank, and the high-pressure pump and the ultrasonic device at the bottom of the cleaning tank are fixedly arranged in the base.
Preferably, a sealing cover is arranged above the cleaning tank, the sealing cover is of a hollow cavity structure, the ultraviolet sterilizer is fixedly arranged on the sealing cover, the sealing cover is movably connected with the cleaning tank, and the surface of the agricultural product in the cleaning tank is sterilized and disinfected through the ultraviolet sterilizer.
As preferred, be close to bottom department joint in the washing tank and have the filter screen, the filter screen can filter the large granule filth, can not let large granule thing get into the water storage storehouse.
Preferably, the jet flow device is a cylindrical water spraying device with water spraying openings uniformly formed in the surface, and the surface of the agricultural product can be efficiently washed.
Preferably, the water storage bin is connected with a high-pressure pump through a conduit, and the high-pressure pump can recycle the filtered water in the water storage bin.
Preferably, the activated carbon layer is prepared from the following raw materials in parts by weight: 30-40 parts of charcoal powder, 20-30 parts of porous ceramic, 8-10 parts of sepiolite, 14-15 parts of sodium styrene sulfonate, 10-12 parts of coconut shell, 10-12 parts of oil rice dumpling leaf, 5-7 parts of graphite, 1-3 parts of zeolite, 1-3 parts of bentonite, 2-4 parts of carboxymethyl cellulose, 3-4 parts of aluminum sulfate, 1-3 parts of citric acid, 2-4 parts of quaternary ammonium salt bactericide and 3-5 parts of sodium acetate; the PP cotton filter core layer is prepared from the following raw materials in parts by weight: 40-50 parts of polypropylene, 10-15 parts of anion powder, 8-10 parts of dibutyl hydroxy toluene, 8-10 parts of sodium carboxymethyl cellulose and 5-7 parts of chitosan.
Another technical problem to be solved by the present invention is to provide a method for manufacturing a filter cavity, comprising the following steps:
1) putting 20-30 parts of porous ceramic, 8-10 parts of sepiolite, 10-12 parts of coconut shell, 10-12 parts of oil rice dumpling leaf, 1-3 parts of zeolite and 1-3 parts of bentonite into a ball mill, starting the ball mill, ball-milling for 20-30 minutes at the speed of 600-plus-material 800r/min, respectively sieving the ball-milled powder, 30-40 parts of charcoal powder and 5-7 parts of graphite through a 100-plus-material 200-mesh sieve, and uniformly mixing the sieved powder for later use;
2) sealing the mixed powder obtained in the step 1) in a carbonization furnace, heating and carbonizing at 400 ℃ of about 300-
3) Putting 14-15 parts of sodium styrene sulfonate, 3-5 parts of sodium acetate and the carbide obtained in the step 1) into a stirrer, sequentially adding 2-4 parts of carboxymethyl cellulose, 3-4 parts of aluminum sulfate, 1-3 parts of citric acid and 2-4 parts of quaternary ammonium salt bactericide, starting the stirrer, and stirring at the speed of 100-120r/min for 10-15 minutes to obtain a mixed material for later use;
4) pressing the mixed material obtained in the step 3) by using a thermal laminating machine, and pressing for 1-2 hours under the pressure of 0.8-1MPA to obtain an activated carbon layer for later use;
5) putting 40-50 parts of polypropylene into a double-screw extruder, melting at the temperature of 190 ℃ below zero and 170 ℃, then sequentially adding 10-15 parts of negative ion powder, 8-10 parts of dibutyl hydroxy toluene, 8-10 parts of sodium carboxymethyl cellulose and 5-7 parts of chitosan, and rotationally stirring at the speed of 80-100r/min to uniformly mix the polypropylene melt with the negative ion powder, the dibutyl hydroxy toluene, the sodium carboxymethyl cellulose and the chitosan to obtain a mixed glue solution for later use;
6) extruding the mixed glue solution obtained in the step 5) into a spinning machine, uniformly extruding the mixed glue solution through a spinneret orifice of the spinning machine at a speed of 4-6m/s, and cooling the extruded filaments in water bath for 10-15 minutes by using water at the temperature of 20-30 ℃ for later use;
7) cutting the cooled filaments in the step 6), then putting the cut filaments into a mould, pressing the cut filaments for 2 to 3 hours under the pressure of 0.5 to 0.8MPA, and then demoulding to obtain a PP cotton filter element layer for later use;
8) and (3) sequentially laminating the activated carbon layer prepared in the step (4), the HEPA filter layer, the PP cotton filter core layer prepared in the step (7) and the cation exchange resin layer by adopting a laminating machine, and then placing the laminated material in a filter cavity to obtain the PP cotton filter core-shell fabric.
The technical effects of the invention are mainly reflected in the following aspects: because the jet flow device is arranged in the cleaning tank and connected with the high-pressure pump, the agricultural products can be washed by the impact force of high-pressure water flow; because the ultrasonic device is arranged at the bottom of the cleaning tank, and the ultraviolet sterilizer is arranged at the top of the cleaning tank, the surface of the agricultural product can be cleaned, sterilized and disinfected by utilizing ultrasonic and ultraviolet sterilizing equipment; the side wall of the cleaning tank is also provided with the soft cleaning hairbrush, so that the agricultural products are cleaned by the soft cleaning hairbrush under the impact force of high-pressure water flow and ultrasonic cleaning, the surface of the agricultural products cannot be damaged, particularly the agricultural products such as leaf vegetables, cherry tomatoes, strawberries and grapes are easily damaged, and the agricultural products can be safely eaten by four functions of cleaning away pesticide residues on the agricultural products, sterilizing and disinfecting; an active carbon filter layer, an HEPA filter layer, a PP cotton filter core layer and a cation exchange resin layer are arranged in a filter cavity at the communication part of the cleaning bin and the water storage bin, the active carbon layer adopts charcoal powder with strong adsorption capacity, porous ceramic, sepiolite, coconut shell, oil rice dumpling leaf, zeolite, bentonite and graphite, and is matched with aluminum sulfate with flocculation effect, sodium styrene sulfonate with scale inhibition effect and sodium acetate buffer are adopted, meanwhile, the active carbon layer prepared by adding citric acid with antibacterial and antivirus effects and quaternary ammonium salt bactericide has excellent adsorption and filtration effects on sewage, meanwhile, the PP cotton filter core layer is prepared by polypropylene, anion powder with good antibacterial effect, antioxidant dibutyl hydroxy toluene, adhesive carboxymethyl cellulose sodium and chitosan with good microbial degradation effect, and can well filter and resist bacteria on the clean water of agricultural products, the water in the water storage bin can be recycled repeatedly, so that the secondary water can be cleaned while the water is saved, and the water storage bin is safe and environment-friendly.
Drawings
FIG. 1 is a schematic structural view of an ultrasonic cleaning machine for high-efficiency agricultural products according to the present invention;
fig. 2 is a schematic structural diagram of a filter cavity in the ultrasonic cleaning machine for high-efficiency agricultural products of the invention.
Detailed Description
The following detailed description of the present invention, taken in conjunction with the accompanying fig. 1-2, is provided to facilitate the understanding and appreciation of the present invention.
In the present embodiment, it should be understood that the terms "middle", "upper", "lower", "top", "right", "left", "above", "back", "middle", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention, and do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the present embodiment, if the connection or fixing manner between the components is not specifically described, the connection or fixing manner may be a bolt fixing manner, a pin connecting manner, or the like, which is commonly used in the prior art, and therefore, details thereof are not described in the present embodiment.
Example 1
An ultrasonic cleaning machine for high-efficiency agricultural products, as shown in fig. 1-2, comprises a cleaning bin 1 and a water storage bin 2 communicated with the cleaning bin 1, wherein the cleaning bin 1 comprises a cleaning tank 11, a jet device 12 arranged at the middle position inside the cleaning tank 11, a high-pressure pump 13 arranged below the cleaning tank 11 and connected with the jet device 12, an ultrasonic device 14 arranged at the bottom of the cleaning tank 11, and an ultraviolet sterilizer 18 arranged at the top of the cleaning tank 11; the water storage bin 2 is provided with filter chamber 3 with 1 intercommunication department in washing storehouse, be provided with active carbon filter layer 31, HEPA filter layer 32, the cotton filter core layer 33 of PP and cation exchange resin layer 34 in the filter chamber 3. The side wall of the interior of the cleaning tank 11 is provided with a cleaning hairbrush 111, the cleaning hairbrush 111 is made of soft materials, the cleaning hairbrush 111 can clean residual pesticide on the agricultural products, and the cleaning hairbrush made of soft materials cannot damage the surfaces of the agricultural products. A base 15 is arranged below the cleaning tank 11, and the high-pressure pump 13 and the ultrasonic device 14 at the bottom of the cleaning tank 11 are both fixedly arranged in the base 15. A sealing cover 16 is arranged above the cleaning tank 11, the sealing cover 16 is of a hollow cavity structure, the ultraviolet sterilizer 18 is fixedly arranged on the sealing cover 16, the sealing cover 16 is movably connected with the cleaning tank 11, the surface of the agricultural product in the cleaning tank 11 is sterilized and disinfected by the ultraviolet sterilizer 18, and the ultraviolet sterilizer 18 is UV-I000 in the embodiment. Be close to the bottom joint in the washing tank 11 and have filter screen 17, filter screen 17 can filter the large granule filth, can not let large granule thing get into in the reservoir 2, and filter screen 17 can be torn open and wash. The jet flow device 12 is a cylindrical water spraying device with water spraying nozzles uniformly formed on the surface, and can efficiently wash the surface of agricultural products. The water storage bin 2 is connected with the high-pressure pump 13 through a conduit, and the high-pressure pump 13 can recycle the filtered water in the water storage bin 2.
The activated carbon layer 31 is prepared from the following raw materials in parts by weight: 40 parts of charcoal powder, 30 parts of porous ceramic, 10 parts of sepiolite, 15 parts of sodium styrene sulfonate, 12 parts of coconut shell, 12 parts of oil rice dumpling leaf, 7 parts of graphite, 3 parts of zeolite, 3 parts of bentonite, 4 parts of carboxymethyl cellulose, 4 parts of aluminum sulfate, 3 parts of citric acid, 4 parts of quaternary ammonium salt bactericide and 5 parts of sodium acetate; the PP cotton filter core layer 33 is prepared from the following raw materials in parts by weight: 50 parts of polypropylene, 15 parts of anion powder, 10 parts of dibutyl hydroxy toluene, 10 parts of sodium carboxymethyl cellulose and 7 parts of chitosan.
A method for manufacturing a filter cavity comprises the following steps:
1) putting 30 parts of porous ceramic, 10 parts of sepiolite, 12 parts of coconut shells, 12 parts of oil rice dumpling leaves, 3 parts of zeolite and 3 parts of bentonite into a ball mill, starting the ball mill, carrying out ball milling for 30 minutes at the speed of 800r/min, respectively sieving the powder subjected to ball milling, 40 parts of charcoal powder and 7 parts of graphite by a 200-mesh sieve, and uniformly mixing the sieved powder for later use;
2) sealing the mixed powder obtained in the step 1) in a carbonization furnace, heating and carbonizing, wherein the carbonization temperature is about 400 ℃, carbonizing for 60min, preserving heat for 2 hours, then raising the temperature to 700 ℃, continuously carbonizing for 30min to obtain carbide, washing the carbide with clear water, drying the cleaned object at the temperature of 40 ℃ for 4 hours to obtain dried carbide, and reserving the dried carbide for later use
3) Putting 15 parts of sodium styrene sulfonate, 5 parts of sodium acetate and the carbide obtained in the step 1) into a stirrer, sequentially adding 4 parts of carboxymethyl cellulose, 4 parts of aluminum sulfate, 3 parts of citric acid and 4 parts of quaternary ammonium salt bactericide, starting the stirrer, and stirring at the speed of 120r/min for 15 minutes to obtain a mixed material for later use;
4) pressing the mixed material obtained in the step 3) by using a thermal bonding machine, and pressing for 2 hours under the pressure of 1MPA to obtain an activated carbon layer for later use;
5) putting 50 parts of polypropylene into a double-screw extruder, melting at 190 ℃, then sequentially adding 15 parts of anion powder, 10 parts of dibutyl hydroxy toluene, 10 parts of sodium carboxymethyl cellulose and 7 parts of chitosan, and rotationally stirring at the speed of 100r/min to uniformly mix the polypropylene melt with the anion powder, the dibutyl hydroxy toluene, the sodium carboxymethyl cellulose and the chitosan to obtain a mixed glue solution for later use;
6) extruding the mixed glue solution obtained in the step 5) into a spinning machine, uniformly extruding the mixed glue solution through a spinneret orifice of the spinning machine at the speed of 6m/s, and cooling the extruded filaments in water bath for 15 minutes by using water at the temperature of 30 ℃ for later use;
7) cutting the cooled filaments obtained in the step 6), then putting the cut filaments into a mould, pressing the cut filaments for 3 hours under the pressure of 0.8MPA, and then demoulding to obtain a PP cotton filter element layer for later use;
8) and (3) sequentially laminating the activated carbon layer prepared in the step (4), the HEPA filter layer, the PP cotton filter core layer prepared in the step (7) and the cation exchange resin layer by adopting a laminating machine, and then placing the laminated material in a filter cavity to obtain the PP cotton filter core-shell fabric.
Example 2
An ultrasonic cleaning machine for high-efficiency agricultural products, as shown in fig. 1-2, comprises a cleaning bin 1 and a water storage bin 2 communicated with the cleaning bin 1, wherein the cleaning bin 1 comprises a cleaning tank 11, a jet device 12 arranged at the middle position inside the cleaning tank 11, a high-pressure pump 13 arranged below the cleaning tank 11 and connected with the jet device 12, an ultrasonic device 14 arranged at the bottom of the cleaning tank 11, and an ultraviolet sterilizer 18 arranged at the top of the cleaning tank 11; the water storage bin 2 is provided with filter chamber 3 with 1 intercommunication department in washing storehouse, be provided with active carbon filter layer 31, HEPA filter layer 32, the cotton filter core layer 33 of PP and cation exchange resin layer 34 in the filter chamber 3. The side wall of the interior of the cleaning tank 11 is provided with a cleaning hairbrush 111, the cleaning hairbrush 111 is made of soft materials, the cleaning hairbrush 111 can clean residual pesticide on the agricultural products, and the cleaning hairbrush made of soft materials cannot damage the surfaces of the agricultural products. A base 15 is arranged below the cleaning tank 11, and the high-pressure pump 13 and the ultrasonic device 14 at the bottom of the cleaning tank 11 are both fixedly arranged in the base 15. A sealing cover 16 is arranged above the cleaning tank 11, the sealing cover 16 is of a hollow cavity structure, the ultraviolet sterilizer 18 is fixedly arranged on the sealing cover 16, the sealing cover 16 is movably connected with the cleaning tank 11, the surface of the agricultural product in the cleaning tank 11 is sterilized and disinfected by the ultraviolet sterilizer 18, and the ultraviolet sterilizer 18 is UV-I000 in the embodiment. Be close to the bottom joint in the washing tank 11 and have filter screen 17, filter screen 17 can filter the large granule filth, can not let large granule thing get into in the reservoir 2, and filter screen 17 can be torn open and wash. The jet flow device 12 is a cylindrical water spraying device with water spraying nozzles uniformly formed on the surface, and can efficiently wash the surface of agricultural products. The water storage bin 2 is connected with the high-pressure pump 13 through a conduit, and the high-pressure pump 13 can recycle the filtered water in the water storage bin 2.
The activated carbon layer 31 is prepared from the following raw materials in parts by weight: 30 parts of charcoal powder, 20 parts of porous ceramic, 8 parts of sepiolite, 14 parts of sodium styrene sulfonate, 10 parts of coconut shell, 10 parts of oil rice dumpling leaf, 5 parts of graphite, 1 part of zeolite, 1 part of bentonite, 2 parts of carboxymethyl cellulose, 3 parts of aluminum sulfate, 1 part of citric acid, 2 parts of quaternary ammonium salt bactericide and 3 parts of sodium acetate; the PP cotton filter core layer 33 is prepared from the following raw materials in parts by weight: 40 parts of polypropylene, 10 parts of anion powder, 8 parts of dibutyl hydroxy toluene, 8 parts of sodium carboxymethyl cellulose and 5 parts of chitosan.
A method for manufacturing a filter cavity comprises the following steps:
1) putting 20 parts of porous ceramic, 8 parts of sepiolite, 10 parts of coconut shells, 10 parts of oil rice dumpling leaves, 1 part of zeolite and 1 part of bentonite into a ball mill, starting the ball mill, carrying out ball milling for 20 minutes at the speed of 600r/min, respectively sieving the powder subjected to ball milling, 30 parts of charcoal powder and 5 parts of graphite by a 100-mesh sieve, and uniformly mixing the sieved powder for later use;
2) sealing the mixed powder obtained in the step 1) in a carbonization furnace, heating and carbonizing, wherein the carbonization temperature is about 300 ℃, carbonizing for 30min, preserving heat for 1 h, then raising the temperature to 600 ℃, continuously carbonizing for 20min to obtain carbide, washing the carbide with clear water, drying the washed matter for 2 h at the temperature of 30 ℃ to obtain dried carbide, and reserving the dried carbide for later use
3) Putting 14 parts of sodium styrene sulfonate, 3 parts of sodium acetate and the carbide obtained in the step 1) into a stirrer, sequentially adding 2 parts of carboxymethyl cellulose, 3 parts of aluminum sulfate, 1 part of citric acid and 2 parts of quaternary ammonium salt bactericide, starting the stirrer, and stirring at the speed of 100r/min for 10 minutes to obtain a mixed material for later use;
4) pressing the mixed material obtained in the step 3) by using a thermal laminating machine, and pressing for 1 hour under the pressure of 0.8MPA to obtain an activated carbon layer for later use;
5) putting 40 parts of polypropylene into a double-screw extruder, melting at 170 ℃, then sequentially adding 10 parts of anion powder, 8 parts of dibutyl hydroxy toluene, 8 parts of sodium carboxymethyl cellulose and 5 parts of chitosan, and rotationally stirring at the speed of 80r/min to uniformly mix the polypropylene melt with the anion powder, the dibutyl hydroxy toluene, the sodium carboxymethyl cellulose and the chitosan to obtain a mixed glue solution for later use;
6) extruding the mixed glue solution obtained in the step 5) into a spinning machine, uniformly extruding the mixed glue solution at the speed of 4m/s through a spinneret orifice of the spinning machine, and cooling the extruded filaments in water bath for 10 minutes by using water at the temperature of 20 ℃ for later use;
7) cutting the cooled filaments obtained in the step 6), then placing the cut filaments into a mold, pressing the cut filaments for 2 hours under the pressure of 0.5MPA, and then demolding to obtain a PP cotton filter element layer for later use;
8) and (3) sequentially laminating the activated carbon layer prepared in the step (4), the HEPA filter layer, the PP cotton filter core layer prepared in the step (7) and the cation exchange resin layer by adopting a laminating machine, and then placing the laminated material in a filter cavity to obtain the PP cotton filter core-shell fabric.
Example 3
An ultrasonic cleaning machine for high-efficiency agricultural products, as shown in fig. 1-2, comprises a cleaning bin 1 and a water storage bin 2 communicated with the cleaning bin 1, wherein the cleaning bin 1 comprises a cleaning tank 11, a jet device 12 arranged at the middle position inside the cleaning tank 11, a high-pressure pump 13 arranged below the cleaning tank 11 and connected with the jet device 12, an ultrasonic device 14 arranged at the bottom of the cleaning tank 11, and an ultraviolet sterilizer 18 arranged at the top of the cleaning tank 11; the water storage bin 2 is provided with filter chamber 3 with 1 intercommunication department in washing storehouse, be provided with active carbon filter layer 31, HEPA filter layer 32, the cotton filter core layer 33 of PP and cation exchange resin layer 34 in the filter chamber 3. The side wall of the interior of the cleaning tank 11 is provided with a cleaning hairbrush 111, the cleaning hairbrush 111 is made of soft materials, the cleaning hairbrush 111 can clean residual pesticide on the agricultural products, and the cleaning hairbrush made of soft materials cannot damage the surfaces of the agricultural products. A base 15 is arranged below the cleaning tank 11, and the high-pressure pump 13 and the ultrasonic device 14 at the bottom of the cleaning tank 11 are both fixedly arranged in the base 15. A sealing cover 16 is arranged above the cleaning tank 11, the sealing cover 16 is of a hollow cavity structure, the ultraviolet sterilizer 18 is fixedly arranged on the sealing cover 16, the sealing cover 16 is movably connected with the cleaning tank 11, the surface of the agricultural product in the cleaning tank 11 is sterilized and disinfected by the ultraviolet sterilizer 18, and the ultraviolet sterilizer 18 is UV-I000 in the embodiment. Be close to the bottom joint in the washing tank 11 and have filter screen 17, filter screen 17 can filter the large granule filth, can not let large granule thing get into in the reservoir 2, and filter screen 17 can be torn open and wash. The jet flow device 12 is a cylindrical water spraying device with water spraying nozzles uniformly formed on the surface, and can efficiently wash the surface of agricultural products. The water storage bin 2 is connected with the high-pressure pump 13 through a conduit, and the high-pressure pump 13 can recycle the filtered water in the water storage bin 2.
The activated carbon layer 31 is prepared from the following raw materials in parts by weight: 35 parts of charcoal powder, 25 parts of porous ceramic, 9 parts of sepiolite, 14.5 parts of sodium styrene sulfonate, 11 parts of coconut shell, 11 parts of oil rice dumpling leaf, 6 parts of graphite, 2 parts of zeolite, 2 parts of bentonite, 3 parts of carboxymethyl cellulose, 3.5 parts of aluminum sulfate, 2 parts of citric acid, 3 parts of quaternary ammonium salt bactericide and 4 parts of sodium acetate; the PP cotton filter core layer 33 is prepared from the following raw materials in parts by weight: 45 parts of polypropylene, 13 parts of anion powder, 9 parts of dibutyl hydroxy toluene, 9 parts of sodium carboxymethyl cellulose and 6 parts of chitosan.
A method for manufacturing a filter cavity comprises the following steps:
1) putting 25 parts of porous ceramic, 9 parts of sepiolite, 11 parts of coconut shells, 11 parts of oil rice dumpling leaves, 2 parts of zeolite and 2 parts of bentonite into a ball mill, starting the ball mill, carrying out ball milling at the speed of 700r/min for 25 minutes, respectively sieving the powder subjected to ball milling, 35 parts of charcoal powder and 6 parts of graphite through a 150-mesh sieve, and uniformly mixing the sieved powder for later use;
2) sealing the mixed powder obtained in the step 1) in a carbonization furnace, heating and carbonizing, wherein the carbonization temperature is about 350 ℃, carbonizing for 50min, preserving heat for 1.5 h, then raising the temperature to 650 ℃, continuously carbonizing for 25min to obtain carbide, washing the carbide with clear water, drying the cleaned object at 35 ℃ for 3 h to obtain dried carbide, and keeping for later use
3) Putting 14.5 parts of sodium styrene sulfonate, 4 parts of sodium acetate and the carbide obtained in the step 1) into a stirrer, sequentially adding 3 parts of carboxymethyl cellulose, 3.5 parts of aluminum sulfate, 2 parts of citric acid and 3 parts of quaternary ammonium salt bactericide, starting the stirrer, and stirring at the speed of 110r/min for 13 minutes to obtain a mixed material for later use;
4) pressing the mixed material obtained in the step 3) by using a thermal laminating machine, and pressing for 1.5 hours under the pressure of 0.9MPA to obtain an activated carbon layer for later use;
5) putting 45 parts of polypropylene into a double-screw extruder, melting at 180 ℃, then sequentially adding 13 parts of anion powder, 9 parts of dibutyl hydroxy toluene, 9 parts of sodium carboxymethyl cellulose and 6 parts of chitosan, and rotationally stirring at the speed of 90r/min to uniformly mix the polypropylene melt with the anion powder, the dibutyl hydroxy toluene, the sodium carboxymethyl cellulose and the chitosan to obtain a mixed glue solution for later use;
6) extruding the mixed glue solution obtained in the step 5) into a spinning machine, uniformly extruding the mixed glue solution at a speed of 5m/s through a spinneret orifice of the spinning machine, and cooling the extruded filaments in water bath for 13 minutes by using water at the temperature of 25 ℃ for later use;
7) cutting the cooled filaments obtained in the step 6), then putting the cut filaments into a mould, pressing the cut filaments for 2.5 hours under the pressure of 0.7MPA, and then demoulding to obtain a PP cotton filter element layer for later use;
8) and (3) sequentially laminating the activated carbon layer prepared in the step (4), the HEPA filter layer, the PP cotton filter core layer prepared in the step (7) and the cation exchange resin layer by adopting a laminating machine, and then placing the laminated material in a filter cavity to obtain the PP cotton filter core-shell fabric.
The working principle is as follows: the invention adopts the mutual cooperation of the high-pressure pump 13 and the jet flow device 12, utilizes the impact force of high-pressure water flow, the ultrasonic device 14 at the bottom of the cleaning groove 11 and the ultraviolet sterilizer 18 at the top to sterilize and disinfect the surface of the agricultural product in the cleaning groove 11, and simultaneously cooperates with the cleaning hairbrush 111 on the side wall of the cleaning groove 11 to wash the agricultural product in the cleaning groove 11, thereby having the four functions of ensuring the clean cleaning, sterilization and disinfection of pesticide residues on the agricultural product and being safe to eat; be close to the bottom joint in the washing tank 11 and have filter screen 17, filter screen 17 can filter the large granule filth, can not let large granule thing get into in the aqua storage storehouse 2, filter screen 17 can be torn down and wash, the large granule thing can not block up the delivery port, and wash storehouse 1 and be linked together with aqua storage storehouse 2, activated carbon filter layer 31 through setting up in the filter chamber 3 of washing storehouse 1 and 2 intercommunication departments of aqua storage storehouse, HEPA filter layer 32, the cotton filter layer 33 of PP filters the water in the storehouse 11 with cation exchange resin layer 34, disinfect and clean, can get rid of various harmful substance in the aquatic, then utilize high-pressure pump 13 to the interior water high pressure blowout once more of filtered in the aqua storage storehouse 2, the recycle of water has been realized, can guarantee the cleanliness of reuse water when using water wisely, safety ring protects.
Examples of the experiments
First, activated carbon experiment
Subject: common fiber activated carbon in the market is used as a first control group, coal-based activated carbon is used as a second control group, and the activated carbon prepared in experimental example 3 of the invention is used as an experimental group.
The experimental requirements are as follows: the weight of the three groups of active carbon is consistent, and 5g of active carbon is taken.
The experimental method comprises the following steps: the iodine adsorption value, methylene blue decolouring power, wear-resisting strength, drying decrement and filling specific gravity of the three groups of active carbon are tested, and the conditions are recorded.
The specific results are shown in the following table:
Figure BDA0002381852920000131
Figure BDA0002381852920000141
TABLE 1
Second, PP Cotton Filter core experiment
Subject: the PP cotton filter element prepared in the experimental example 3 of the invention.
The experimental method comprises the following steps: the PP cotton filter element prepared in the experimental example 3 of the invention was tested and the conditions were recorded.
The specific results are shown in the following table:
escherichia coli killing rate (%) 98.9
Bacteriostatic ratio (%) 99
Water flux (L/min) 2.62
TABLE 2
By combining table 1 and comparing results obtained by common fiber activated carbon, coal activated carbon and the activated carbon in the market under the same experimental method, the activated carbon has obvious advantages in test data of iodine value, methylene blue decolorization, abrasion resistance, drying decrement and filling specific gravity, and table 2 shows that the PP cotton filter core has high Escherichia coli killing rate and bacteriostasis rate, and a filter cavity made of the activated carbon and the PP cotton filter core has good filtering effect on sewage and can realize cyclic recycling of water.
The technical effects of the invention are mainly reflected in the following aspects: because the jet flow device is arranged in the cleaning tank and connected with the high-pressure pump, the agricultural products can be washed by the impact force of high-pressure water flow; because the ultrasonic device is arranged at the bottom of the cleaning tank, and the ultraviolet sterilizer is arranged at the top of the cleaning tank, the surface of the agricultural product can be cleaned, sterilized and disinfected by utilizing ultrasonic and ultraviolet sterilizing equipment; the side wall of the cleaning tank is also provided with the soft cleaning hairbrush, so that the agricultural products are cleaned by the soft cleaning hairbrush under the impact force of high-pressure water flow and ultrasonic cleaning, the surface of the agricultural products cannot be damaged, particularly the agricultural products such as leaf vegetables, cherry tomatoes, strawberries and grapes are easily damaged, and the agricultural products can be safely eaten by four functions of cleaning away pesticide residues on the agricultural products, sterilizing and disinfecting; an active carbon filter layer, an HEPA filter layer, a PP cotton filter core layer and a cation exchange resin layer are arranged in a filter cavity at the communication part of the cleaning bin and the water storage bin, the active carbon layer adopts charcoal powder with strong adsorption capacity, porous ceramic, sepiolite, coconut shell, oil rice dumpling leaf, zeolite, bentonite and graphite, and is matched with aluminum sulfate with flocculation effect, sodium styrene sulfonate with scale inhibition effect and sodium acetate buffer are adopted, meanwhile, the active carbon layer prepared by adding citric acid with antibacterial and antivirus effects and quaternary ammonium salt bactericide has excellent adsorption and filtration effects on sewage, meanwhile, the PP cotton filter core layer is prepared by polypropylene, anion powder with good antibacterial effect, antioxidant dibutyl hydroxy toluene, adhesive carboxymethyl cellulose sodium and chitosan with good microbial degradation effect, and can well filter and resist bacteria on the clean water of agricultural products, the water in the water storage bin can be recycled repeatedly, so that the secondary water can be cleaned while the water is saved, and the water storage bin is safe and environment-friendly.
The above are only typical examples of the present invention, and besides, the present invention may have other embodiments, and all the technical solutions formed by equivalent substitutions or equivalent changes are within the scope of the present invention as claimed.

Claims (7)

1. The utility model provides a high-efficient ultrasonic cleaner for agricultural product, including the washing storehouse, reaches the water storage storehouse that is linked together with the washing storehouse, its characterized in that: the cleaning bin comprises a cleaning tank, a jet flow device arranged in the middle of the interior of the cleaning tank, a high-pressure pump arranged below the cleaning tank and connected with the jet flow device, an ultrasonic device arranged at the bottom of the cleaning tank, and an ultraviolet sterilizer arranged at the top of the cleaning tank; a filtering cavity is arranged at the communication position of the water storage bin and the cleaning bin, and an activated carbon layer, an HEPA filtering layer, a PP cotton filtering layer and a cation exchange resin layer are arranged in the filtering cavity; the activated carbon layer is prepared from the following raw materials in parts by weight: 30-40 parts of charcoal powder, 20-30 parts of porous ceramic, 8-10 parts of sepiolite, 14-15 parts of sodium styrene sulfonate, 10-12 parts of coconut shell, 10-12 parts of oil rice dumpling leaf, 5-7 parts of graphite, 1-3 parts of zeolite, 1-3 parts of bentonite, 2-4 parts of carboxymethyl cellulose, 3-4 parts of aluminum sulfate, 1-3 parts of citric acid, 2-4 parts of quaternary ammonium salt bactericide and 3-5 parts of sodium acetate; the PP cotton filter core layer is prepared from the following raw materials in parts by weight: 40-50 parts of polypropylene, 10-15 parts of anion powder, 8-10 parts of dibutyl hydroxy toluene, 8-10 parts of sodium carboxymethyl cellulose and 5-7 parts of chitosan; the preparation method of the filter cavity comprises the following steps:
1) putting 20-30 parts of porous ceramic, 8-10 parts of sepiolite, 10-12 parts of coconut shell, 10-12 parts of oil rice dumpling leaf, 1-3 parts of zeolite and 1-3 parts of bentonite into a ball mill, starting the ball mill, ball-milling for 20-30 minutes at the speed of 600-plus-material 800r/min, respectively sieving the ball-milled powder, 30-40 parts of charcoal powder and 5-7 parts of graphite through a 100-plus-material 200-mesh sieve, and uniformly mixing the sieved powder for later use;
2) sealing the mixed powder obtained in the step 1) in a carbonization furnace, heating and carbonizing at 400 ℃ for 300-;
3) putting 14-15 parts of sodium styrene sulfonate, 3-5 parts of sodium acetate and the carbide obtained in the step 1) into a stirrer, sequentially adding 2-4 parts of carboxymethyl cellulose, 3-4 parts of aluminum sulfate, 1-3 parts of citric acid and 2-4 parts of quaternary ammonium salt bactericide, starting the stirrer, and stirring at the speed of 100-120r/min for 10-15 minutes to obtain a mixed material for later use;
4) pressing the mixed material obtained in the step 3) by using a thermal laminating machine, and pressing for 1-2 hours under the pressure of 0.8-1MPA to obtain an activated carbon layer for later use;
5) putting 40-50 parts of polypropylene into a double-screw extruder, melting at the temperature of 190 ℃ below zero and 170 ℃, then sequentially adding 10-15 parts of negative ion powder, 8-10 parts of dibutyl hydroxy toluene, 8-10 parts of sodium carboxymethyl cellulose and 5-7 parts of chitosan, and rotationally stirring at the speed of 80-100r/min to uniformly mix the polypropylene melt with the negative ion powder, the dibutyl hydroxy toluene, the sodium carboxymethyl cellulose and the chitosan to obtain a mixed glue solution for later use;
6) extruding the mixed glue solution obtained in the step 5) into a spinning machine, uniformly extruding the mixed glue solution through a spinneret orifice of the spinning machine at a speed of 4-6m/s, and cooling the extruded filaments in water bath for 10-15 minutes by using water at the temperature of 20-30 ℃ for later use;
7) cutting the cooled filaments in the step 6), then putting the cut filaments into a mould, pressing the cut filaments for 2 to 3 hours under the pressure of 0.5 to 0.8MPA, and then demoulding to obtain a PP cotton filter element layer for later use;
8) and (3) sequentially laminating the activated carbon layer prepared in the step (4), the HEPA filter layer, the PP cotton filter core layer prepared in the step (7) and the cation exchange resin layer by adopting a laminating machine, and then placing the laminated material in a filter cavity to obtain the PP cotton filter core-shell fabric.
2. An ultrasonic cleaning machine for high efficiency agricultural products as set forth in claim 1, wherein: the side wall of the inner part of the cleaning tank is provided with a cleaning brush which is made of soft materials.
3. An ultrasonic cleaning machine for high efficiency agricultural products as set forth in claim 2, wherein: the lower part of the cleaning tank is provided with a base, and the high-pressure pump and the ultrasonic device at the bottom of the cleaning tank are fixedly arranged in the base.
4. An ultrasonic cleaning machine for high efficiency agricultural products as set forth in claim 3, wherein: the cleaning tank is characterized in that a sealing cover is arranged above the cleaning tank and is of a hollow cavity structure, the ultraviolet sterilizer is fixedly arranged on the sealing cover, and the sealing cover is movably connected with the cleaning tank.
5. An ultrasonic cleaning machine for high efficiency agricultural products as set forth in claim 4, wherein: a filter screen is clamped in the cleaning tank close to the bottom.
6. An ultrasonic cleaning machine for high efficiency agricultural products as set forth in claim 5, wherein: the jet flow device is a cylindrical water spraying device with water spraying nozzles uniformly arranged on the surface.
7. An ultrasonic cleaning machine for high efficiency agricultural products as set forth in claim 6, wherein: the water storage bin is connected with the high-pressure pump through a conduit.
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