CN216284545U

CN216284545U - Food heavy metal detects uses sample pretreatment device

Info

Publication number: CN216284545U
Application number: CN202121608401.7U
Authority: CN
Inventors: 巩志国; 苏敏; 魏哲文; 夏凌荣; 朱奕璇; 李雪蔚
Original assignee: Urumqi Customs Technical Center
Current assignee: Urumqi Customs Technical Center
Priority date: 2021-07-15
Filing date: 2021-07-15
Publication date: 2022-04-12
Anticipated expiration: 2031-07-15

Abstract

The utility model provides a sample pretreatment device for food heavy metal detection in the technical field of food detection, which comprises a crushing box, wherein two compression rollers are arranged in the crushing box, one sides of the two compression rollers, which are far away from each other, are provided with a scraping component and a drainage component, the press roller is scraped by the front end of the scraper, the adhesive under the press roller is heated, dried and dispersed by the drainage assembly, the front end of the scraper is detachably connected with the rear end of the scraper, so that the scraper can be conveniently maintained or replaced by opening the cover plate, the outer surface of the compression roller is detected by the laser sensor, the front end of the scraper blade and the compression roller are prevented from continuously scraping and accelerating the abrasion of the scraper blade when no attachments exist on the surface of the compression roller, the problems that the sample crushing device for detecting the heavy metal in the food in the prior art is not ideal in cleaning effect and small in application range are solved, and the scraper is easy to wear and not easy to maintain and replace, and has wide popularization and application values in the technical field of food detection.

Description

Food heavy metal detects uses sample pretreatment device

Technical Field

The utility model relates to the technical field of food detection, in particular to a sample pretreatment device for food heavy metal detection.

Background

With the continuous and deep development of economic globalization, people have increasingly diversified food culture, food sanitation and safety problems are also paid high attention to, air pollution, water pollution and soil pollution in the environment are increasingly serious, and heavy metal pollution seriously threatens food safety in a concealed mode.

Heavy metal means a density of greater than 5g/cm³The metal(s) of (1) comprises 45 elements such as gold, silver, copper, lead, zinc, nickel, cobalt, cadmium, chromium, mercury and the like, heavy metal pollution refers to pollution caused by heavy metals and compounds thereof, and mainly refers to pollution caused by heavy metals and compounds thereof such as mercury (mercury), cadmium, lead, chromium, metalloid arsenic and the like with remarkable biological toxicity. Because heavy metals cannot be biodegraded but can be concentrated hundreds of times under the action of biological amplification of food chains and finally enter a human body, the heavy metals can strongly interact with protein, enzyme and the like in the human body to cause the heavy metals to lose activity, and can also accumulate in certain organs of the human body to cause chronic poisoning.

The current common heavy metal detection rapid pretreatment technology in food mainly comprises solvent extraction, microwave technology, direct sample injection technology without pretreatment and the like, advanced crushing or homogenization and other pretreatment operations are generally required for facilitating extraction, for example, Chinese patent CN202020304016.2 discloses a sample crushing device for food heavy metal detection, a crushing roller is used for crushing food, the crushed food enters a material conveying cylinder along a material guide plate, a scraper is used for cleaning the food adhered to the crushing roller, the material conveying cylinder conveys the crushed food to the bottom of a rack by a screw shaft, an electric heating wire heats and dries the food fragment, generated hot air is emitted out of a vent hole, the food fragment is conveyed out of a discharge hole, the collection is convenient and rapid, but when the device is used for treating food with larger viscosity, the requirement for cleaning the food sample adhered to the crushing roller cannot be achieved by only one scraper, application scope is little, and scraper blade and crushing roller be the physical contact, and easy wearing and tearing are changed also inconvenient, secondly, is not stained with food sample on the crushing roller always, and crushing roller scraper blade also is in always scraping off the state under cleaner circumstances, has further accelerated scraper blade degree of wear.

Therefore, a sample pretreatment device for detecting heavy metal in food, which has a good cleaning effect and is easy to maintain and replace, is needed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems of poor cleaning effect, small application range, easy abrasion of a scraper and inconvenient replacement and maintenance of the conventional sample crushing device for detecting heavy metal in food, the utility model aims to provide a sample pretreatment device for detecting heavy metal in food, which comprises a crushing box, wherein two compression rollers are arranged in the crushing box, one sides of the two compression rollers, which are far away from each other, are provided with a scraping component and a drainage component, the compression rollers are scraped through the front ends of the scrapers, the drainage component is used for heating, drying and dispersing adhesive substances below the compression rollers, the front ends of the scrapers are detachably connected with the rear ends of the scrapers, the maintenance or the replacement is convenient by opening a cover plate, the outer surfaces of the compression rollers are detected through a laser sensor, the front ends of the scrapers and the compression rollers continuously scrape to accelerate the abrasion of the scrapers when the surfaces of the compression rollers have no adhesive substances, and the problem that the cleaning effect of the conventional sample crushing device for detecting heavy metal in food in the prior art is not ideal is solved, the scraper blade has the advantages of small application range, easy abrasion, difficult maintenance and replacement, and wide popularization and application value in the technical field of food detection.

The utility model is realized by the following technical scheme:

the utility model provides a sample crushing device for detecting heavy metal in food, which comprises a crushing box, wherein two crushing rollers, two scraping components and a controller are arranged in the crushing box, the two crushing rollers are symmetrically arranged about the center of the crushing box and are respectively arranged in the crushing box in a self-rotating manner around the axis of the two crushing rollers, the rotating directions of the two crushing rollers are opposite, the two scraping components are symmetrically arranged about the center of the crushing box, each scraping component is arranged at the side of one crushing roller, each scraping component comprises a supporting plate, a scraper front end, a scraper rear end and a torsion spring, the side wall of the supporting plate is fixedly connected with the side wall of the crushing box, one end of the supporting plate, which is close to the crushing rollers, is hinged with one end of the rear end of the scraper, one end of the front end of the scraper is detachably connected with one end of the rear end of the scraper, which is far away from the supporting plate, through a bolt, and the torsion spring is arranged between the rear end of the scraper and the supporting plate, the rear end of the scraper is in hinged fit with the support plate through a torsion spring.

According to the utility model, drainage assemblies are arranged below the two scraping assemblies, each drainage assembly comprises a drainage plate and a disturbance part, the side wall of each drainage plate is fixedly installed with the side wall of the crushing box, the disturbance parts are connected with one ends, close to the crushing rollers, of the drainage plates, and gaps are reserved between the disturbance parts and the crushing rollers; the disturbing part and the drainage plate are both of hollow structures, and the disturbing part is communicated with the hollow structures in the drainage plate; the outer surface of the disturbing part is provided with disturbing holes arranged in a matrix manner, the disturbing holes are communicated with the inside of the disturbing part, and the air outlet of the air pump is communicated with the drainage plate through an air path.

In the utility model, one end of the drainage plate, which is close to the outer wall of the crushing box, is arranged in a downward inclined manner.

According to the utility model, the air injection plates are arranged below the drainage assemblies, each air injection plate is provided with an air inlet and an air outlet, the air inlets of the air injection plates are connected with the air pump through air paths, and the air outlets of the air injection plates are arranged in a downward inclined manner.

According to the utility model, two laser sensors are further arranged in the crushing box, the laser sensors are fixedly arranged on the side wall of the crushing box, the detection ends of the laser sensors correspond to the outer contour of the crushing roller, the laser sensors are arranged between the scraping assembly and the drainage assembly, and the two laser sensors are electrically connected with the controller.

According to the utility model, a feed inlet is formed in the top of the crushing box, the lower end of the feed inlet is of a funnel structure and extends to a position between two crushing rollers, two maintenance holes are formed in two sides of the feed inlet in the top of the crushing box, each maintenance hole is arranged above the corresponding scraping component, a cover plate is arranged above each maintenance hole, the cover plate is rotatably connected with the crushing box, and a discharge outlet is formed in the bottom of the crushing box.

In the utility model, an electromagnet is fixedly arranged above the supporting plate, a magnet is arranged at the rear end of the scraping plate, and the magnet at the rear end of the scraping plate is matched with the electromagnet above the supporting plate.

Compared with the prior art, the sample pretreatment device for detecting the heavy metal in the food can obtain the following beneficial effects:

(1) the hot air flow sprayed out from the output end of the air injection pipe is in a radial shape, the radial hot air flow is tangent to the outer surface of the compression roller, the adhered substance below the compression roller can be better subjected to heat treatment, the hot air flow has a drying effect, the effect of scattering the adhered substance by the air flow can be achieved, and the five samples with large viscosity can be crushed, so that the five samples are cleaned for the first time.

(2) When the scraper blade front end and the compression roller laminating, the scraper blade front end strikes off the compression roller, and this is the clearance of second time, and the clearance effect is better, prevents to attach and pollutes kibbling sample next time.

(3) The front end of the scraper is in physical contact with the compression roller, the front end of the scraper can be damaged after long-term use, and the scraping assembly stops working when no crushed substances are attached to the surface of the scraper through the matching of the laser sensor and the scraping assembly, so that the abrasion of a pipe is reduced; the scraper blade front end can be dismantled with the scraper blade rear end and be connected, and the apron of the crushing case top both sides of accessible conveniently maintains or changes the scraper blade front end, and the clearance is effectual, and convenient to use is convenient for maintain or change vulnerable part, has improved life, has extensive popularization and application and worth in food detection technology field.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 shows a cross-sectional view of the present invention;

figure 3 shows a cross-sectional view of the scraper assembly of the present invention in a shutdown state;

FIG. 4 is a partial perspective view of the present invention;

FIG. 5 is a schematic perspective view of the gas injection plate according to the present invention;

FIG. 6 is a perspective view of a drainage plate according to the present invention.

Reference numerals: 1-crushing box, 2-crushing roller, 3-scraping component, 4-support plate, 5-scraper front end, 6-scraper rear end, 7-torsion spring, 8-drainage component, 9-drainage plate, 10-disturbance part, 11-gas-injection plate, 12-gas inlet, 13-gas outlet, 14-laser sensor, 15-material inlet, 16-maintenance hole, 17-cover plate, 18-material outlet, and 19-electromagnet.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to fig. 1 to 6, and it is obvious that the described embodiments are some, not all embodiments of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

For convenience and convenience of description, the description of the relative position relationship of each component in a sample pretreatment device for detecting heavy metal in food is described according to the layout mode of the attached figure 1, such as: the positional relationship of up, down, left, right, etc. is determined according to the layout direction of fig. 1.

Referring to fig. 1 to 6, an embodiment of the present invention provides a sample crushing device for detecting heavy metal in food, including a crushing box 1, two crushing rollers 2, two scraping assemblies 3 and a controller are arranged in the crushing box 1, the two crushing rollers 2 are arranged symmetrically with respect to the center of the crushing box 1 and are respectively arranged in the crushing box 1 in a manner capable of rotating around their own axes, the two crushing rollers 2 are opposite in rotation direction, the two scraping assemblies 3 are arranged symmetrically with respect to the center of the crushing box 1, each scraping assembly 3 is arranged beside one crushing roller 2, each scraping assembly 3 includes a support plate 4, a scraper front end 5, a scraper rear end 6 and a torsion spring 7, the side wall of the support plate 4 is fixedly connected with the side wall of the crushing box 1, one end of the support plate 4 close to the crushing roller 2 is hinged with one end of the scraper rear end 6, one end of the scraper front end 5 is detachably connected with one end of the scraper rear end 6 far from the support plate 4 through a bolt, the torsional spring 7 is arranged between the scraper rear end 6 and the support plate 4, and the scraper rear end 6 is in hinged fit with the support plate 4 through the torsional spring 7.

In the utility model, the drainage assemblies 8 are arranged below the two scraping assemblies 3, each drainage assembly 8 comprises a drainage plate 9 and a disturbance part 10, the side wall of each drainage plate 9 is fixedly installed with the side wall of the crushing box 1, the disturbance parts 10 are connected with one ends, close to the crushing rollers 2, of the drainage plates 9, and gaps are reserved between the disturbance parts 10 and the crushing rollers 2; the disturbing part 10 and the drainage plate 9 are both hollow structures, and the disturbing part 10 is communicated with the hollow structures in the drainage plate 9; the outer surface of the disturbing part 10 is provided with disturbing holes arranged in a matrix, the disturbing holes are communicated with the inside of the disturbing part 10, and the air outlet 13 of the air pump is communicated with the drainage plate 9 through an air path.

In the utility model, one end of the drainage plate 9, which is close to the outer wall of the crushing box 1, is arranged in a downward inclined manner.

In the utility model, the air injection plates 11 are arranged below the drainage components 8, each air injection plate 11 is provided with an air inlet 12 and an air outlet 13, the air inlets 12 of the air injection plates 11 are connected with an air pump through air channels, and the air outlets 13 of the air injection plates 11 are arranged in a downward inclined mode.

Preferably, in the utility model, the heating wire is arranged in the air injection plate, so that air flow in the air injection plate can be heated, the food sample can be conveniently dried and heated while being dispersed, and the cleaning effect is further improved.

In the utility model, two laser sensors 14 are further arranged in the crushing box 1, the laser sensors 14 are fixedly arranged on the side wall of the crushing box 1, the detection ends of the laser sensors 14 correspond to the outer contour of the crushing roller 2, the laser sensors 14 are arranged between the scraping component 3 and the drainage component 8, and the two laser sensors 14 are electrically connected with the controller.

According to the utility model, the top of the crushing box 1 is provided with a feed inlet 15, the lower end of the feed inlet 15 is of a funnel structure and extends to a position between two crushing rollers 2, two maintenance holes 16 are arranged on two sides of the feed inlet on the top of the crushing box 1, each maintenance hole 16 is arranged above the corresponding scraping component 3, a cover plate 17 is arranged above each maintenance hole 16, the cover plate 17 is rotatably connected with the crushing box 1, and the bottom of the crushing box 1 is provided with a discharge outlet 18.

In the utility model, an electromagnet 19 is fixedly arranged above the supporting plate 4, a magnet is arranged at the rear end 6 of the scraper, and the magnet at the rear end 6 of the scraper is arranged corresponding to the electromagnet 19 above the supporting plate 4.

When the device is used, the two crushing rollers 2 are started to enable the two crushing rollers 2 to rotate oppositely, so that a food sample is fed from the feed port 15, falls between the two crushing rollers 2 rotating oppositely, is extruded and crushed, falls into the discharge port 18 and is discharged, and the subsequent detection of the food sample is facilitated; when food with high viscosity is processed, food can remain on the crushing roller 2, when the crushing roller 2 rotates, the food sample crushing roller 2 rotates to the air injection plate 11, the air inlet 12 on the air injection plate 11 heats air flow conveyed from the air pump, the air flow is discharged from the air outlet 13 and is sprayed to the surface of the crushing roller 2, the food sample adhered to the crushing roller 2 is dried and blown away, and the adhered food sample is prevented from influencing the detection result of the subsequent crushed sample; if the food sample plate has high viscosity and cannot be blown away by the air jet plate 11, the adhered food sample continues to rotate along with the crushing roller 2 to the scraping component 3, the front end 5 of the scraper on the scraping component 3 is attached to the crushing roller 2 under the action of the torsion spring 7, the crushing roller 2 is cleaned again by the front end 5 of the scraper, the cleaned food sample residue falls to the position above the disturbing part 10, the disturbing part 10 and the drainage plate 9 are both of hollow structures, the disturbing part 10 is mutually communicated with the hollow structure in the drainage plate 9, the disturbing holes are arranged in the matrix on the outer surface of the disturbing part 10, the drainage plate 9 is communicated with the air outlet of the air pump, so that the air flow is sprayed out from the disturbing part to blow the food sample residue scraped off by the scraping component 3 to prevent accumulation, the blown food sample residue falls onto the drainage plate 9 and falls off through the inclined plane of the drainage plate 9 to be discharged from the discharge port 18 to prevent the food sample residue from remaining in an included angle in the crushing box 1, the crushing roller 2 is cleaned twice every time the crushing roller 2 rotates for one circle, so that the cleaning effect is improved; the side wall of the crushing box 1 is provided with a laser sensor 14, the detection end of the laser sensor 14 corresponds to the outer contour of the crushing roller 2, the laser sensor 14 is arranged between the scraping component 3 and the drainage component 8, the laser sensor 12 is matched with the scraping component 3, when the laser sensor 14 detects that no food sample is attached to the surface of the crushing roller 2, the controller controls the electromagnet 19 to be electrified, so that the electromagnet 19 is attached to a magnet on the rear end of the scraper, the front end 5 of the scraper is separated from the outer surface of the crushing roller 2, and the scraping component 3 is prevented from being unintentionally operated to cause abrasion of the front end 5 of the scraper; when the cleaning effect is reduced due to abrasion of the front end 5 of the scraper blade after long-term use, the cover plate 17 at the top of the crushing box 1 can be opened, the front end of the scraper blade is maintained and/or replaced from the maintenance hole 16, the maintenance or the replacement of a wearing part is facilitated, the cleaning effect is improved through twice cleaning, the service life is prolonged, the phenomenon that the adhesion objects on the surface of the crushing roller pollute food samples at the next time is prevented, the use is convenient, and the wide popularization and application value is realized in the technical field of food detection.

The standard parts used in the present application document can be purchased from the market, and can be customized according to the description of the specification and the accompanying drawings, the specific connection mode of each part adopts the conventional means of mature bolt, rivet, welding and the like in the prior art, the machines, parts and equipment adopt the conventional models in the prior art, the control mode is automatically controlled by a controller, the control circuit of the controller can be realized by simple programming of technicians in the field, the control circuit belongs to the common knowledge in the field, and the present application document is mainly used for protecting mechanical devices, so the control mode and the circuit connection are not explained in detail in the present application.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. The utility model provides a food heavy metal detects uses sample pretreatment device, includes crushing case (1), its characterized in that: smash be provided with two crushing roller (2), two in case (1) scrape subassembly (3) and controller, two crushing roller (2) set up and can be respectively around the setting of self axis rotation in smashing case (1) about smashing case (1) central symmetry, two scrape subassembly (3) and set up about smashing case (1) central symmetry, and every scrapes subassembly (3) and all sets up the side at one crushing roller (2), every scrape subassembly (3) including backup pad (4), scraper blade front end (5), scraper blade rear end (6) and torsional spring (7), the lateral wall of backup pad (4) and the lateral wall fixed connection who smashes case (1), backup pad (4) be close to the one end of smashing roller (2) with the one end of scraper blade rear end (6) are articulated, the one end of scraper blade front end (5) and the one end that backup pad rear end (6) kept away from backup pad (4) are through dismantling the connection The scraper blade hinge device is characterized in that the torsion spring (7) is arranged between the scraper blade rear end (6) and the support plate (4), and the scraper blade rear end (6) is in hinged fit with the support plate (4) through the torsion spring (7).

2. The sample pretreatment device for detecting heavy metal in food according to claim 1, characterized in that: drainage assemblies (8) are arranged below the two scraping assemblies (3), each drainage assembly (8) comprises a drainage plate (9) and a disturbance part (10), the side wall of each drainage plate (9) is fixedly mounted with the side wall of the crushing box (1), the disturbance parts (10) are connected with one ends, close to the crushing rollers (2), of the drainage plates (9), and gaps are reserved between the disturbance parts (10) and the crushing rollers (2); the disturbing part (10) and the drainage plate (9) are both hollow structures, and the disturbing part (10) is communicated with the hollow structures in the drainage plate (9); disturbing holes arranged in a matrix manner are formed in the outer surface of the disturbing part (10), and the disturbing holes are communicated with the inside of the disturbing part (10); the air pump is characterized in that an air injection plate (11) is arranged below the drainage assembly (8), the air injection plate (11) is provided with an air inlet (12) and an air outlet (13), the air inlet (12) of the air injection plate (11) is connected with the air pump through an air passage, the air outlet (13) of the air injection plate (11) is arranged in a downward inclined mode, and the air outlet (13) of the air pump is communicated with the drainage plate (9) through the air passage.

3. The sample pretreatment device for detecting heavy metal in food according to claim 2, characterized in that: the one end that drainage plate (9) are close to crushing case (1) outer wall sets up that slopes down.

4. The sample pretreatment device for detecting heavy metal in food according to claim 2, characterized in that: still be provided with two laser sensor (14) in smashing case (1), laser sensor (14) are fixed to be set up on the lateral wall of smashing case (1), and the outline and laser sensor (14) that the sense terminal of laser sensor (14) corresponds crushing roller (2) set up between scraping subassembly (3) and drainage subassembly (8), two laser sensor (14) and controller electric connection.

5. The sample pretreatment device for detecting heavy metal in food according to claim 2, characterized in that: the top of smashing case (1) is equipped with feed inlet (15), the lower extreme of feed inlet (15) is the funnel structure and extends to between two crushing roller (2), and the top feed inlet both sides of smashing case (1) are equipped with two maintenance holes (16), every maintenance hole (16) all set up in the top of scraping subassembly (3) that corresponds, and the top of maintenance hole (16) is equipped with apron (17), and apron (17) rotate with smashing case (1) to be connected, and the bottom of smashing case (1) is equipped with discharge gate (18).

6. The sample pretreatment device for detecting heavy metal in food according to claim 1, characterized in that: an electromagnet (19) is fixedly arranged above the supporting plate (4), a magnet is arranged at the rear end (6) of the scraper, and the magnet at the rear end (6) of the scraper is matched with the electromagnet (19) above the supporting plate (4).