CN113720628A

CN113720628A - Food detection sampling device

Info

Publication number: CN113720628A
Application number: CN202111133996.XA
Authority: CN
Inventors: 张继辉; 彭常安; 徐迪; 纪承慧; 宋青聘
Original assignee: Wuhu Institute of Technology
Current assignee: Wuhu Institute of Technology
Priority date: 2021-09-27
Filing date: 2021-09-27
Publication date: 2021-11-30

Abstract

The invention discloses a food detection sampling device, which relates to the technical field of food detection and comprises a rack, a sample collection box and a sampling mechanism, wherein a surrounding light source is arranged at the upper end of the rack, an electric cylinder is arranged at the upper end of the rack, and the output end of the electric cylinder is connected with a lifting frame. According to the invention, the sampling mechanism is arranged on the lifting frame, and the rapid vibration formed by the two samplers can effectively eliminate particle gaps of solid food or air bubbles accumulated in non-solid food entering the samplers, so that the sampling accuracy is ensured; under the effect that two guide rails are wide in the middle and narrow in two ends, the sliding paths of the two samplers at the same depth are not straight, so that the food at the same depth position in the sample collection box can not flow and cover on the moving trajectory of the samplers, the sampling of the edge and the middle of the same depth position can be completed, and the authenticity of a detection result is improved.

Description

Food detection sampling device

Technical Field

The invention relates to the technical field of food detection, in particular to a food detection sampling device.

Background

The food detection mainly comprises quality detection, safety detection and the like, namely, the physical and chemical indexes of the content of components in the food are detected, whether the food contains toxic substances and the content indexes of the toxic substances or not is detected, the detection process is usually carried out in a laboratory, the types of the food to be detected are various, such as solid particle food, solid-liquid coexisting food, semi-solid gel food and the like, and a plurality of sets of sampling devices matched with the corresponding types of the food need to be arranged in the prior art.

However, the existing sampling device still has certain disadvantages in the long-time use process: for solid granular food, gaps exist among food in a sampling space, so that the sampling quantity of each time is different, and when non-solid food enters a sampler, air in the non-solid food cannot be emptied in time, so that bubbles are often accumulated on the inner wall of the sampler after the sample is filled, and the sampling quantity of each time is also different; two, directly carry out the horizontal multiple spot sampling of same high position at the food of waiting to examine in collection appearance container, there is the condition that the sample flows and covers, the sample at next sampling point is along with sampling device's removal, it is great to receive the influence of last sampling point sample, and to the take up utensil of food, especially printing opacity material utensil such as glass, the food at its utensil edge is compared with the food of utensil middle part position, its physical and chemical index receives external environment factor to influence greatly, if directly stretch into the collection appearance container but can't gather the food of waiting to examine of border position, can influence the authenticity of testing result.

Disclosure of Invention

The invention aims to provide a food detection sampling device to solve the defects caused in the prior art.

The utility model provides a food detection sampling device, includes frame, collection appearance case and sampling mechanism, the upper end of frame sets up around the light source, and the electric jar is installed to the upper end of frame, the output of electric jar is connected with the crane, the other end of crane passes through the guide post and slides and set up in the frame, collection appearance case sets up inside encircling the light source, sampling mechanism installs on the crane to wait to examine food to carry out the same degree of depth sampling at edge and middle part to gathering appearance incasement.

Preferably, the sampling mechanism comprises a driving motor, a sliding part and a sampler, the driving motor is arranged on the lifting frame, the output end of the driving motor is provided with a crank, the sliding part is arranged on the lifting frame in a sliding manner through two guide rails which are symmetrically arranged, the sliding part is provided with an arc-shaped guide opening, the lower end of the crank is arranged in the guide opening in a sliding manner through a pulley, the middle part of the sliding part is provided with a rotating shaft through threads, the upper end of the rotating shaft is provided with a stirring part through a torsion spring, the lower end of the rotating shaft is rotatably connected with a sliding plate, the guide rails are provided with idler wheels through sliding seats, the two sides of the guide rails are fixedly connected with baffle plates, the side ends of the sliding seats are fixedly connected with fixed rods, the lower end of the sliding plate is slidably connected with two mounting plates which are symmetrically arranged, the mounting plates are provided with sliding openings, and the fixed rods are slidably arranged in the sliding openings, the fixed rod is sleeved with a spring between the mounting plate and the sliding seat, the sampler is fixedly mounted at the lower end of the mounting plate, a push rod is slidably arranged at the side end of the mounting plate, and the lower end of the push rod is abutted to the sampler.

Preferably, the sample thief is flat cavity structure, and the introduction port has been seted up to the side of sample thief, the inboard of introduction port is provided with keeps off the material switch, the lower extreme butt of push rod is on keeping off the lateral wall of material switch, and the appearance mouth has been seted up to the bottom of sample thief, appearance mouth department sets up the start-stop valve head.

Preferably, both ends of the guide opening are in a groove transition structure.

Preferably, the toggle piece is matched with the crank in the horizontal direction.

Preferably, when the crank is not in contact with the toggle piece, a projection of an end of the toggle piece is intersected with a projection of the guide opening in the vertical direction.

Preferably, the upper end of the push rod and the side end of the baffle are both inclined end faces, and the end faces of the push rod and the baffle are inclined to the same extent.

Preferably, the sample collection box is made of transparent materials.

The invention has the advantages that: the sampling mechanism is arranged on the lifting frame, the output end of the driving motor drives the pulley to slide in the guide opening through the crank so as to drive the sliding part to slide on the guide rail in a reciprocating manner, the sliding plate can be driven to move downwards through the rotating shaft along with the pushing of the crank to the stirring part when the sampling point is positioned, the sampling device is further driven to move downwards through the mounting plate, the two sampling devices quickly rise under the elastic action of the torsional spring after the crank is separated from the stirring part, and the quick vibration formed in the process can effectively eliminate particle gaps of solid food or air bubbles accumulated and hung in the sampling device when non-solid food enters the sampling device, so that the sampling accuracy is ensured;

under the effect that two guide rails are wide in the middle and narrow in both ends, make two samplers not straight line at the glide path of same degree of depth, the cooperation sampler sets up at the flat structure of moving direction, make the food to same depth position in the collection appearance incasement, flow cover can not appear on the trajectory that the sampler removed, make non-solid food receive minimum vortex interference, reduce the cross influence of sampling point, and stir the piece rotation along with the crank promotion, and drive the sliding plate and move down, make the mounting panel move down along the intraoral dead lever of sliding opening, and then make the baffle promote the push rod to remove to the direction that is close to the sampler passively, drive the switching that the sampler kept off the material switch, in order to accomplish the edge sampling, and the sliding part is to the right side direction slip process, accomplish the middle part sampling of same depth position, improve the authenticity of testing result.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural diagram of the sampling mechanism of the present invention.

Fig. 3 is a schematic structural diagram of a sampling mechanism from another view angle in the present invention.

Fig. 4 is an internal schematic view of a partial structure of the sampling mechanism of the present invention.

Fig. 5 is a schematic diagram illustrating the state of the edge sampling process in the present invention.

Fig. 6 is an enlarged view of a portion a in fig. 5.

Fig. 7 is an assembly view showing a partial structure of the sampling mechanism according to the present invention.

The device comprises a rack 1, a sample collection box 2, a sampling mechanism 3, a surrounding light source 4, an electric cylinder 5, a lifting frame 6, a guide column 7, a driving motor 301, a sliding part 302, a sampler 303, a sampler 304, a crank 305, a guide rail 306, a guide opening 307, a pulley 308, a rotating shaft 309, a torsion spring 310, a stirring part 311, a sliding plate 312, a sliding seat 312, a roller 313, a baffle 314, a fixed rod 315, a mounting plate 316, a sliding opening 317, a spring 318, a push rod 319, a sample inlet 3031, a material blocking switch 3032, a sample outlet 3033 and a valve head 3034.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in figures 1 to 7, a food detection sampling device, including frame 1, collection appearance case 2 and sampling mechanism 3, the upper end of frame 1 sets up around light source 4, and electric jar 5 is installed to the upper end of frame 1, the output of electric jar 5 is connected with crane 6, crane 6's the other end slides through guide post 7 and sets up in frame 1, collection appearance case 2 sets up inside around light source 4, sampling mechanism 3 installs on crane 6 to it carries out the same degree of depth sampling at edge and middle part to wait to examine food to collection appearance case 2 in.

It should be noted that the sample collection box 2 is made of transparent material, and the side end of the sample collection box 2 and the lifting frame 6 can be guided and limited.

In this embodiment, the sampling mechanism 3 includes a driving motor 301, a sliding part 302 and a sampler 303, the driving motor 301 is installed on the lifting frame 6, a crank 304 is installed at an output end of the driving motor 301, the sliding part 302 is slidably installed on the lifting frame 6 through two symmetrically-arranged guide rails 305, an arc-shaped guide opening 306 is opened on the sliding part 302, a lower end of the crank 304 is slidably installed in the guide opening 306 through a pulley 307, a rotating shaft 308 is installed at a middle part of the sliding part 302 through a thread, a toggle member 310 is installed at an upper end of the rotating shaft 308 through a torsion spring 309, a sliding plate 311 is rotatably connected to a lower end of the rotating shaft 308, a roller 313 is arranged on the guide rail 305 through a sliding seat 312, a baffle 314 is fixedly connected to two sides of the guide rail 305, a fixing rod 315 is fixedly connected to a side end of the sliding seat 312, two symmetrically-arranged mounting plates 316 are slidably connected to a lower end of the sliding plate 311, the utility model discloses a sampler, including mounting panel 316, dead lever 315, sample ware 303, the last slip opening 317 of having seted up of mounting panel 316, dead lever 315 slides and sets up in slip opening 317, and the cover is equipped with spring 318 between mounting panel 316 and the seat 312 that slides on the dead lever 315, sample ware 303 fixed mounting is in the lower extreme of mounting panel 316, and the side of mounting panel 316 slides and is provided with push rod 319, the lower extreme butt of push rod 319 is on sample ware 303.

It should be mentioned that the sampler 303 is a flat cavity structure, a sample inlet 3031 is formed at a side end of the sampler 303, a material blocking switch 3032 is arranged inside the sample inlet 3031, a lower end of the push rod 319 abuts against a side wall of the material blocking switch 3032, a sample outlet 3033 is formed at the bottom of the sampler 303, and an opening and closing valve head 3034 is arranged at the sample outlet 3033.

It should be noted that the lower ends of the two guide rails 305 are configured to have a wide middle part and narrow ends, and the rollers 313 are always arranged on the side ends of the guide rails 305 in a rolling manner, and the two fixing rods 315 are not at the same height.

In this embodiment, two ends of the guide opening 306 are in a groove transition structure, and an end of the toggle member 310 is disposed at a corner position of the groove transition structure.

In the present embodiment, the toggle member 310 is engaged with the crank 304 in the horizontal direction, and when the crank 304 is not in contact with the toggle member 310, the projection of the end of the toggle member 310 intersects with the projection of the guide opening 306 in the vertical direction.

In addition, the upper end of the push rod 319 and the side end of the baffle 314 are both provided with inclined end surfaces, and the inclination degrees of the end surfaces of the push rod 319 and the baffle 314 are matched.

The working process and principle are as follows: before the sampling device is used, firstly, food to be detected is put in a sample collection box 2 and sealed, then a surrounding light source 4 around the sample collection box 2 is started to irradiate strong light to the sample collection box 2 so as to achieve the simulation effect under the food illumination condition, after the irradiation is carried out for a certain time, the sealing structure of the sample collection box 2 is opened, an electric cylinder 5 is started to enable the output end of the electric cylinder to move downwards, a lifting frame 6 and a sampling mechanism 3 on the lifting frame are driven to synchronously move downwards until the height position to be sampled, then a driving motor 301 is started to enable the output end of the electric cylinder to rotate anticlockwise, a pulley 307 is driven by a crank 304 to slide in a guide opening 306 so as to drive a sliding part 302 to slide on a guide rail 305 in a reciprocating mode (taking the sliding in the left side direction as an example), in the process, a sliding part 302 drives two mounting plates 316 to slide leftwards through a rotating shaft 308 and a sliding plate 311, at the moment, a sliding seat 312 is positioned at the wider position of the lower end of the guide rail 305, two samplers 303 at the lower end of the mounting plate 316 are pulled to the farthest state through a fixing rod 315, when the roller 313 rolls to the narrow end of the guide rail 305, the two samplers 303 are in a nearest state and are matched with the flat structure arrangement of the samplers 303 in the moving direction, so that the food at the same depth position in the sample collection box 2 cannot flow and cover on the moving trajectory of the samplers 303, and the non-solid food is disturbed by the lowest turbulence;

at this time, the push rod 319 contacts with the oblique end face of the baffle 314, and the pulley 307 slides in the arc-shaped guide opening 306, so that the sliding portion 302 achieves the purpose of temporary storage, before the pulley 307 enters into the side end groove structure of the guide opening 306, because the side end of the sample collection box 2 and the lifting frame 6 can be guided and limited, so that the sampler 303 can be located at the edge of the inner wall of the sample collection box 2, as the crank 304 pushes the toggle member 310 to rotate, the rotating shaft 308 can be driven to rotate in the middle of the sliding portion 302, and the sliding plate 311 is driven to move down, so that the mounting plate 316 moves down along the fixed rod 315 in the sliding opening 317, further, the baffle 314 passively pushes the push rod 319 to move in the direction close to the sampler 303, the sampler stop switch 3032 is pushed by the lower end of the push rod 319 to open from the sample inlet 3031, and the sample to be detected in the sample collection box 2 is rapidly collected into the sampler 303, after the pulley 307 enters the side end groove structure of the guide opening 306, under the action of the self elasticity of the torsion spring 309, the toggle member 310 is restored to the original position, and then the two samplers 303 are driven to rise rapidly, the formed rapid vibration can effectively eliminate the particle gaps of the solid food, or the non-solid food enters the accumulated bubbles in the sampler 303, finally the material blocking switch 3032 on the sampler 303 is closed to complete edge sampling, and similarly, the process is performed along with the sliding process of the sliding part 302 towards the right side direction, and the above process is performed in a reverse direction to complete middle sampling at the same depth position, after sampling is completed, the electric cylinder 5 is started again to lift the output end of the electric cylinder, the two samplers 303 are driven to be separated from the sample to be detected in the sample collection box 2, and finally the opening and closing valve head 3034 of the sampler 303 is opened to complete sampling taking out.

Based on the above, the sampling mechanism 3 is arranged on the lifting frame 6, the output end of the driving motor 301 drives the pulley 307 to slide in the guide opening 306 through the crank 304, so as to drive the sliding part 302 to slide on the guide rail 305 in a reciprocating manner, when the sampling point is located, the crank 304 pushes the stirring part 310, the sliding plate 311 can be driven to move downwards through the rotating shaft 308, the sampler 303 is further driven to move downwards through the mounting plate 316, and after the crank 304 is separated from the stirring part 310, the two samplers 303 rapidly rise under the elastic force of the torsion spring 309, the rapid vibration formed in the process can effectively eliminate the particle gaps of solid food, or bubbles accumulated in the sampler 303 when non-solid food enters, so as to ensure the sampling accuracy;

under the action of the two guide rails 305, which are wide in the middle and narrow at the two ends, the sliding paths of the two samplers 303 at the same depth are not straight, and the flat-shaped structure of the samplers 303 in the moving direction is matched, so that the food at the same depth position in the sample collection box 2, no flow coverage occurs on the moving trajectory of the sampler 303, so that the non-solid food is disturbed by the lowest turbulence, the cross influence of the sampling point is reduced, and as the crank 304 pushes the toggle 310 to rotate, and drives the sliding plate 311 to move down, so that the mounting plate 316 moves down along the fixing bar 315 in the sliding opening 317, so that the baffle 314 passively pushes the push rod 319 to move towards the direction close to the sampler 303, and drives the sampler stop switch 3032 to open and close to complete edge sampling, and the sliding part 302 slides towards the right direction, so that the middle sampling of the same depth position is completed, and the authenticity of the detection result is improved.

It will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of or equivalence to the invention are intended to be embraced therein.

Claims

1. The utility model provides a food detects sampling device, its characterized in that, includes frame (1), collection appearance case (2) and sampling mechanism (3), the upper end of frame (1) sets up around light source (4), and electric jar (5) are installed to the upper end of frame (1), the output of electric jar (5) is connected with crane (6), the other end of crane (6) slides through guide post (7) and sets up on frame (1), collection appearance case (2) set up inside around light source (4), sampling mechanism (3) are installed on crane (6) to wait to examine food to gather in appearance case (2) and carry out edge and middle part with the degree of depth sampling.

2. The food detection and sampling device of claim 1, wherein: the sampling mechanism (3) comprises a driving motor (301), a sliding part (302) and a sampler (303), the driving motor (301) is installed on the lifting frame (6), a crank (304) is installed at the output end of the driving motor (301), the sliding part (302) is arranged on the lifting frame (6) in a sliding mode through two guide rails (305) which are symmetrically arranged, an arc-shaped guide opening (306) is formed in the sliding part (302), the lower end of the crank (304) is arranged in the guide opening (306) in a sliding mode through a pulley (307), a rotating shaft (308) is installed in the middle of the sliding part (302) in a threaded mode, a stirring part (310) is installed at the upper end of the rotating shaft (308) through a torsion spring (309), the lower end of the rotating shaft (308) is rotatably connected with a sliding plate (311), rollers (313) are arranged on the guide rails (305) through a sliding seat (312), and baffles (314) are fixedly connected to the two sides of the guide rails (305), the side end fixedly connected with dead lever (315) of seat (312) slides, the lower extreme sliding connection of sliding plate (311) has two mounting panel (316) that the symmetry set up, slip opening (317) have been seted up on mounting panel (316), dead lever (315) slide to set up in slip opening (317), and the cover is equipped with spring (318) between mounting panel (316) and seat (312) slides on dead lever (315), sample thief (303) fixed mounting is in the lower extreme of mounting panel (316), and the side of mounting panel (316) slides and is provided with push rod (319), the lower extreme butt of push rod (319) is on sample thief (303).

3. The food detection and sampling device of claim 2, wherein: the sampler (303) is of a flat cavity structure, a sample inlet (3031) is formed in the side end of the sampler (303), a material blocking switch (3032) is arranged on the inner side of the sample inlet (3031), the lower end of the push rod (319) abuts against the side wall of the material blocking switch (3032), a sample outlet (3033) is formed in the bottom of the sampler (303), and an opening and closing valve head (3034) is arranged at the sample outlet (3033).

4. The food detection and sampling device of claim 2, wherein: the two ends of the guide opening (306) are in groove transition structures.

5. The food detection and sampling device of claim 2, wherein: the toggle piece (310) is matched with the crank (304) in the horizontal direction.

6. The food detection and sampling device of claim 2, wherein: when the crank (304) is not in contact with the toggle piece (310), the projection of the end part of the toggle piece (310) and the projection of the guide opening (306) have intersection in the vertical direction.

7. The food detection and sampling device of claim 2, wherein: the upper end of the push rod (319) and the side end of the baffle (314) are both arranged in an inclined end face, and the inclination degrees of the end faces of the push rod and the baffle are matched.

8. The food detection and sampling device of claim 1, wherein: the sample collection box (2) is made of transparent materials.