CN112816633A - Portable detection equipment based on food safety - Google Patents

Abstract

The invention discloses a portable detection device based on food safety, which comprises an upper box body, a cleaning device and a sample rack which are positioned in the upper box body, a refrigerating chamber connected with the upper box body, an instrument chamber positioned at one side of the refrigerating chamber, an ultraviolet lamp and a plurality of emulsion tapes which are fixed in the upper box body, a plurality of support frames positioned outside the refrigerating chamber, and an electric control box arranged at one side of the refrigerating chamber; the cleaning device comprises a water supply assembly, a middle cavity, a plurality of cleaning assemblies, a water outlet cavity and a cooling fan; the cleaning assembly comprises an upper clamping, a cleaning column, a lower clamping and a water valve assembly; the portable detection equipment based on food safety is light in structural design and convenient to carry, improves the maneuverability and flexibility of the detection box, and can clean and disinfect the test tube at any time by arranging the cleaning device in the detection box; a test tube rack is arranged for sealing and storing a liquid sample which needs to be further detected in a laboratory; the cold storage chamber is arranged to store the detection reagent and the fresh sample which need to be in a low-temperature environment, and the practicability of the detection box is enhanced.

Description

Portable detection equipment based on food safety

Technical Field

The invention belongs to the technical field of food safety detection, and particularly relates to portable detection equipment based on food safety.

Background

Food safety is more and more widely valued by the nation and the society, in recent years, food safety problems caused by factors such as environmental pollution, excessive pesticide and animal residues, additive abuse and improper storage are widely concerned by people, food safety detection plays a greater and greater role in guaranteeing food safety, existing food detection facilities are generally carried out in laboratories, laboratory analysis detection technologies relying on large instruments such as mass spectrums and chromatographs are accurate and reliable, but the defects of long period, high cost and the like exist, detection maneuverability, timeliness and matching performance are poor, rapid detection is often required to be carried out in the market under specific conditions, and large detection equipment in the laboratories is difficult to achieve. The detection box in the prior art is often unreasonable in design and poor in tightness, tightness and mobility; the current detection case does not have special washing degassing unit, and used sample test tube need externally wash and dry, and the sample scene often does not have special equipment to supply to dry and disinfect, can't guarantee the cleanness of sample test tube, influences the detection precision, can't perfectly play a role in the occasion that needs survey the sample detection more.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention provides the portable detection equipment which has the functions of cleaning and disinfection and is more practical and based on food safety.

In order to achieve the purpose, the invention adopts the following technical scheme: a portable detection device based on food safety comprises an upper box body, a cleaning device, a sample rack, a refrigerating chamber, an instrument chamber, an ultraviolet lamp, a plurality of latex tapes, a plurality of support frames and an electric control box, wherein the cleaning device is positioned in the upper box body; the cleaning device comprises a water supply assembly, a middle cavity connected with the water supply assembly, a plurality of cleaning assemblies connected with the middle cavity, a water outlet cavity connected with the cleaning assemblies, a cooling fan fixed on the cleaning assemblies, an air inlet connector positioned on the middle cavity and a water outlet connector connected with the water outlet cavity; the cleaning assembly comprises an upper clamp, a cleaning column positioned below the upper clamp, a lower clamp connected with the cleaning column, and a water valve assembly positioned on one side of the lower clamp; the cleaning column comprises a hollow rod piece inserted in the lower clamp, a plurality of separation blades arranged on the side wall of the hollow rod piece and an annular boss arranged on the hollow rod piece; a direct-current power supply is arranged in the electric control box and used for supplying electric power to various electric appliances in the detection box, a semiconductor refrigerating sheet and a cooling fan are further arranged in the electric control box, the semiconductor refrigerating sheet is used for refrigerating the interior of the refrigerating chamber, the cooling fan is used for conveying heat displaced by the refrigerating sheet to the interior of the cleaning device through a pipeline, and the cleaned test tube is heated and dried; the detection articles such as an enzyme detection agent, a buffer reagent, a substrate, pesticide residue rapid detection test paper, a quantitative suction tube and the like which need to be stored at low temperature are stored in the refrigerating chamber, and through the refrigerating effect of the semiconductor refrigerating sheet, a low-temperature pollution-free environment is provided, the service life of the articles is prolonged, and the practicability of the invention is improved; the latex belt is used for fixing sampling devices such as scissors, tweezers and the like, so that the latex belt can be firmly fixed in the upper box body; hard cotton is filled in the instrument chamber, an opening is formed in the hard cotton, and the instrument chamber is used for placing detection equipment such as a PH instrument, an electronic balance and a mixer and avoiding the detection equipment from being damaged; the cleaning device is fixed in the upper box body, the periphery of the cleaning device is sealed, and the sealing plate positioned above the cleaning device is made of light-transmitting materials so as to facilitate the ultraviolet lamp to disinfect the test tube; the upper sealing plate is provided with an opening, the opening is filled with non-woven fabrics which are breathable and waterproof, so that damp and hot steam in the cleaning device can be discharged when the cooling fan works, and meanwhile, the detection box is prevented from being polluted due to the fact that the detection box is horizontally placed and water in the detection box leaks out when the detection box is laterally placed or shaken; during cleaning, the water supply assembly sends water into the hollow rod piece, the water is sprayed from the small hole in the top of the cleaning column and the side opening, the water sprayed from the side impacts the baffle plate firstly, the recoil force of the water enables the cleaning column to rotate, and the water continuously impacts the inner wall of the test tube in the rotating process, so that all parts of the test tube are cleaned, and the cleaning effect is strong.

The lower clamp comprises a perforated pipe connected with the intermediate pipe; the elastic support is arranged above the perforated pipe, and the spring is fixed on the perforated pipe; the elastic support is in a pagoda shape, the side surface of the elastic support is provided with a notch, and water flows out of the notch after washing the test tube and then flows into the water outlet cavity through the water outlet joint through a pipeline to avoid water accumulation in the test tube; the cleaning column is inserted in the perforated pipe and the elastic support; the upper end of the perforated pipe is connected with the elastic support, and the lower end of the perforated pipe is provided with an opening and is inserted into the middle cavity; the middle cavity is of a double-layer structure, the lower layer is connected with the water supply assembly, and the upper layer is connected with the water outlet joint through a pipeline; when the test tube needs to be cleaned, the test tube is reversely buckled on the elastic support, and the elasticity of the elastic support stably supports the test tube, so that the test tube cannot break away from the elastic support and be broken when the detection box shakes; pressing the test tube to enable the elastic support and the perforated tube to move downwards, enabling the lower opening of the perforated tube to be located in the lower layer space of the middle cavity, injecting water into the middle cavity by the water supply assembly, and further introducing the water into the test tube to finish cleaning; after the cleaning is finished, the hole pipe moves upwards to enable the opening of the hole pipe to be positioned at the upper layer of the middle cavity, water is prevented from continuously entering the test tube, meanwhile, water in the cleaning column falls onto the upper layer of the middle cavity and flows into the water outlet cavity through the water outlet joint by the water pipe, meanwhile, hot air sent by the cooling fan enters the upper layer of the middle cavity through the air inlet joint and further enters the test tube, and the test tube is dried; the test tube is kept stable by arranging the lower clamping, so that the test tube is prevented from being broken due to the fact that the test tube shakes and impacts a hard part in the process of moving the detection box; meanwhile, only the cleaning assembly inserted into the test tube can be used for supplying water, so that the waste of water is reduced.

The water valve component comprises a return block which is in clamping contact with the lower part, an electromagnet which is positioned on one side of the return block, and a second spring is also arranged between the return block and the electromagnet; when the test tube is cleaned, the hole tube moves downwards by pressing the test tube, and the return blocking block is clamped into the cylindrical groove on the side surface of the hole tube under the action of the second spring to prevent the hole tube from moving, so that the opening at the lower part of the hole tube is always positioned in the lower layer space of the middle cavity in the cleaning process, and the cleaning effect is ensured; after cleaning, the electromagnet is electrified, the return-resistant block is attracted to enable the return-resistant block to be separated from the cylindrical groove, the perforated pipe is reset, cleaning is completed, then the electromagnet is powered off, and the return-resistant block is attached to the side wall of the perforated pipe under the action of a second spring; through setting up water valve unit spare, the washing and disinfection process of test tube has realized automatic control, makes the detection case all can accomplish the washing and disinfection to the test tube under use and standby state to accomplish and get promptly and use to the test tube.

The upper clamp comprises an end cover and a plurality of rubber sheets fixed at the bottom of the end cover; the open end is inserted on elastic support when test tube cleaning and fixed, and the other end is inserted in end cover and rubber piece, and end cover internally mounted has the sealing washer, and water can not spill from belt cleaning device inside when making the detection case rock, also plays certain fixed action to the test tube simultaneously, and the rubber piece further supports the test tube with fixed its position when the test tube inserts, avoids the test tube to break away from control and breaks into pieces when the detection case rocks.

The sample rack comprises a sliding chute fixed in the upper box body, a plurality of sealing covers connected with the sliding chute, a test tube support positioned below the sealing covers, and a base fixed in the upper box body; the sealing cover consists of a pressing rod and a test tube plug, one end of the pressing rod is inserted into the chute, the bottom of the pressing rod is provided with a spring, and the other end of the spring is fixedly connected with the test tube plug; the test tube support comprises a plurality of elastic blocks inserted in the base and annular springs inserted in the elastic blocks; in practical use, because of the limitation of equipment, some harmful substances must be detected by high-precision equipment in a laboratory, and a sample rack is arranged for the detection; the pressure bar can slide left and right in the chute, so that the test tube can be conveniently inserted into the test tube holder without blocking the movement of the test tube holder; the sample rack can be directly used as a test tube rack at ordinary times, when in use, the test tube is inserted between the elastic blocks, and the annular spring extrudes the elastic blocks to fix the test tube; when the sample needs to be stored, the sample tube is inserted between the elastic blocks, and then the test tube plug is buckled in the sample tube to support and seal the sample tube, so that the sample can be conveniently carried to a laboratory for further detection.

The support frame comprises a rod piece connected with the upper box body, a sliding piece connected with one end of the rod piece, and a support plate connected with the sliding piece; when the detection box is closed, the support plate and the rod piece are parallel to the bottom surface of the upper box body, when the detection box is opened, the rod piece drives the support plate to rotate, so that the support plate is in a horizontal state, the rod piece is supported at the bottom of the upper box body, the support plate and the rod piece jointly support the upper box body, the detection box is stable and does not shake, and a sample placed on a sample rack is prevented from being spilled due to shaking during detection; meanwhile, the instrument equipment in the instrument room is in a stable working environment.

The air inlet joint comprises an air inlet, an air sealing plate arranged above the air inlet and a spring fixedly connected with the air sealing plate; the hot gas generated in the refrigerating process of the refrigerating sheet is transmitted to the air inlet joint through the pipeline, the upper part of the air inlet joint is provided with a plurality of small holes, the bottom of the air inlet joint is inserted into the upper layer of the middle cavity, when the test tube is cleaned, the hole opening tube moves downwards, the upper layer of the middle cavity is in a sealed state, the air pressure pushes the air sealing plate to move upwards, and the hot gas is discharged from the small holes; after the washing, inside steam got into the test tube by trompil pipe and washing post, dried the test tube. Through setting up air inlet joint, get up the waste heat utilization that the refrigeration produced, realize the stoving effect to the test tube.

The water outlet joint comprises a connector connected with the water outlet cavity, a pipe orifice connected with the connector and a floating ball positioned in the pipe orifice; go out water joint horizontal installation and link to each other at a play water cavity side, the mouth of pipe passes through the pipeline and links to each other with middle cavity and belt cleaning device delivery port, and the floater can roll in the mouth of pipe, when the detection case rocks or inclines, the floater rolls and seals the mouth of pipe, avoids the water refluence of play water intracavity to advance the test tube, influences the stoving effect.

In summary, the invention has the following advantages: the cleaning device and the ultraviolet lamp are arranged, so that the test tube for sampling can be cleaned and disinfected at any time, the adaptability of the detection box to the detection environment is enhanced, the practicability of the detection box is improved, and the detection box is convenient to carry; the cold storage chamber is arranged for storing the reagents and detection articles needing low-temperature sterile storage at low temperature, so that the detection result is more reliable.

Drawings

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

FIG. 2 is a schematic view of another embodiment of the present invention.

Fig. 3 is a schematic structural view of the cleaning apparatus in fig. 1.

Fig. 4 is a left side view of the cleaning apparatus of fig. 1.

Figure 5 is an isometric cross-sectional view taken along line D-D of figure 4.

Fig. 6 is a front view of the cleaning apparatus of fig. 1.

Fig. 7 is an isometric cross-sectional view taken along line E-E of fig. 6.

Fig. 8 is a partially enlarged view of a portion a in fig. 7.

Fig. 9 is a partially enlarged view of a portion C in fig. 7.

Fig. 10 is a front view of the upper clamp of fig. 7.

Fig. 11 is an isometric cross-sectional view taken along line F-F of fig. 10.

FIG. 12 is a broken away cross-sectional view of the wash column of FIG. 7.

Fig. 13 is a partially enlarged view of a portion B in fig. 12.

Fig. 14 is a front view of the lower clamp of fig. 7.

Fig. 15 is an isometric cross-sectional view taken along line G-G of fig. 14.

Fig. 16 is a front view of the sample holder of fig. 1.

Fig. 17 is an isometric cross-sectional view taken along line H-H of fig. 16.

Figure 18 is a front view of the seal cap of figure 17.

Fig. 19 is an isometric cross-sectional view taken along line J-J of fig. 18.

Fig. 20 is a schematic structural view of the test tube holder of fig. 17.

Fig. 21 is an exploded view of the support bracket of fig. 2.

Fig. 22 is a schematic structural view of the refrigerating chamber in fig. 1.

FIG. 23 is a front view of the intake adapter of FIG. 5.

Figure 24 is an isometric cross-sectional view taken along line K-K of figure 23.

Fig. 25 is a right side view of the water outlet fitting of fig. 5.

Fig. 26 is an isometric cross-sectional view taken along line L-L of fig. 25.

Detailed Description

In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention.

As shown in fig. 1-26, a portable detection device based on food safety comprises an upper box body 3, a cleaning device 1 positioned in the upper box body, a sample rack 2 positioned in the upper box body, a refrigerating chamber 4 connected with the upper box body, an instrument chamber 5 positioned at one side of the refrigerating chamber, an ultraviolet lamp 6 fixed in the upper box body, a plurality of milk adhesive tapes 7 arranged on the upper box body, a plurality of support frames 9 positioned outside the refrigerating chamber, and an electric control box 10 arranged at one side of the refrigerating chamber; the cleaning device 1 comprises a water supply assembly 11, a middle cavity 15 connected with the water supply assembly, a plurality of cleaning assemblies 13 connected with the middle cavity, a water outlet cavity 12 connected with the cleaning assemblies, a heat radiation fan 14 fixed on the cleaning assemblies, an air inlet connector 16 positioned on the middle cavity and a water outlet connector 17 connected with the water outlet cavity; the cleaning assembly 13 comprises an upper clamp 131, a cleaning column 132 positioned below the upper clamp, a lower clamp 133 connected with the cleaning column, and a water valve assembly 134 positioned on one side of the lower clamp; the upper clamp 131 comprises an end cover 1311 and a plurality of rubber sheets 1312 fixed at the bottom of the end cover; the cleaning column 132 comprises a hollow rod 1321 inserted in the lower clamp, a plurality of baffle pieces 1322 arranged on the side wall of the hollow rod, and an annular boss 1323 arranged on the hollow rod; lower clamp 133 includes a perforated tube 1334 connected to the middle cavity; an elastic support 1331 arranged above the perforated pipe and a spring 1333 fixed at the bottom of the perforated pipe; the water valve assembly 134 comprises a blocking block 1341 in contact with the lower clamp 133, an electromagnet 1342 positioned on one side of the blocking block, and a second spring 1343 arranged between the blocking block and the electromagnet; the water supply component 11 is a combination of a small water pump and a water tank, can be directly purchased from the market, and the structure and the principle of the water supply component are not described in detail herein; a direct-current power supply is arranged in the electric control box 10 and used for supplying power to various electric appliances in the detection box, a semiconductor refrigerating sheet and a cooling fan are further arranged in the electric control box, the refrigerating end of the semiconductor refrigerating sheet refrigerates the interior of the refrigerating chamber 4, and the cooling fan sends heat displaced by the refrigerating sheet to the air inlet joint 16 through a pipeline; the instrument chamber 5 is filled with hard cotton, and is provided with an opening for placing detection equipment such as a PH instrument, an electronic balance, a mixer and the like, so that the detection equipment is prevented from being damaged; the cleaning device 1 is fixed in the upper box body 3 and sealed at the periphery, the upper sealing plate 136 is made of a light-transmitting acrylic plate, and an opening 1361 is formed in the upper sealing plate; the openings are filled with non-woven fabrics which are breathable and waterproof, so that damp and hot steam in the cleaning device can be discharged when the cooling fan 14 works, the cooling fan is arranged on the upper sealing plate 136, the air outlet of the cooling fan faces the inside of the cleaning device 1, and the non-woven fabrics are arranged at the air outlet, so that the air circulation in the cleaning device is enhanced, and meanwhile, the water in the cleaning device is prevented from leaking; the cleaning column 132 is inserted into the elastic support 1331 and the perforated pipe 1334, the side surface and the side surface of the perforated pipe are sealed, and a plurality of rolling bodies 135 are respectively arranged between the annular boss 1323 and the elastic support and the perforated pipe, so that the resistance of the lower clamp 133 to the cleaning column during rotation is reduced, and the cleaning effect is enhanced; the elastic support 1331 is made of rubber material, and has a pagoda-shaped surface and a slot on the side surface, and the test tube is pressed when placed thereon, and due to the slot, the elastic support can slightly contract inwards and apply a reaction force to the test tube, so as to stably hold the test tube on the elastic support, and the slot can also guide water in the test tube to be discharged; the middle cavity is of a double-layer structure, the lower layer is connected with the water supply assembly, and the upper layer is connected with the water outlet joint through a pipeline; the upper clamp 131 is fixed on the upper sealing plate 136, a sealing ring is arranged in the end cover 1311, and the interior of the cleaning device 1 is sealed after the test tube is inserted, so that water is prevented from leaking out; the rubber piece 1312 is attached to the test tube, the test tube is kept stable under the action of the elastic support, and the rubber piece can follow the shaking of the test tube when the detection box shakes, so that the test tube is prevented from being broken due to separation control; during cleaning, the test tube passes through the upper clamp 131 and is placed on the elastic support 1331, the test tube is continuously pressed to enable the perforated tube 1334 to move downwards, and the blocking block 1341 is clamped into the cylindrical groove 1332 on the side surface of the lower clamp 133 under the action of the second spring 1343 in the downward movement process to enable the perforated tube to stop moving; at the moment, the opening on the side surface of the perforated pipe is positioned in the lower layer space of the middle cavity 15, the water supply assembly supplies water to the middle cavity, the water is further guided into the hollow rod 1321, the top of the hollow rod is provided with a plurality of small holes, the water is sprayed out from the small holes to clean the bottom of the test tube, two openings are symmetrically arranged on the side surface of the cleaning column 132, the water is sprayed out from the openings and impacts a baffle 1322 arranged beside the opening, the cleaning column is rotated by the recoil force of the water to the baffle, the water is sprayed to the inner wall of the test tube along the trend to wash the inner wall of the test tube, and the washed water flows out from the open slot on; after cleaning, the electromagnet 1342 is powered on to separate the blocking block 1341 from the cylindrical groove 1332, the lower clamp 133 is moved upwards to the original position under the action of the spring 1333, the side opening of the perforated pipe 1334 is positioned in the upper space of the middle cavity 15, the residual water in the cleaning column 132 falls to the upper layer of the middle cavity, and the water in the cleaning device 1 and the water in the middle cavity flow into the water outlet cavity 12 through the pipeline and the water outlet joint 17; after a period of time, the electromagnet 1342 loses power, and the return resistance block 1341 resets under the action of the second spring 1343, so that the cleaning process is completed; furthermore, one side of the water outlet cavity is provided with an opening which can be used for discharging water in the water outlet cavity; the number of cleaning assemblies is 6 to meet the detection requirement.

The sample rack 2 comprises a sliding chute 31 fixed in the upper box body 3, a plurality of sealing covers 32 connected with the sliding chute, a test tube support 33 positioned below the sealing covers, and a base 34 fixed in the upper box body; the sealing cover 32 consists of a pressing rod 321 and a test tube plug 322, one end of the pressing rod is inserted into the chute 31, the bottom of the pressing rod is provided with a spring, and the other end of the spring is fixedly connected with the test tube plug; the test tube holder 33 comprises four elastic blocks 331 inserted in the base 34 and an annular spring 332 inserted in the annular spring; the opening in the chute 31 is T-shaped, one end of the compression bar 321 inserted into the chute is also T-shaped and can slide left and right in the chute, and the compression bar is moved to one side of the chute when the test tube is inserted into the test tube holder, so that the movement of the test tube is prevented from being blocked; when the test tube fixing device is used, the test tube is inserted between the elastic blocks 331, the elastic blocks expand outwards under the limitation of the base 34, and the annular spring 332 is stressed to extrude the elastic blocks to fix the test tube; when a sample needs to be stored, a sample tube is inserted between the elastic blocks, the compression rod 321 is moved, the test tube plug 322 is lifted to be positioned right above the sample tube, the test tube plug is loosened to be plugged into the sample tube, the bottom of the test tube plug is provided with a sealing ring made of multiple layers of latex, the sample tube is sealed, meanwhile, a spring at the bottom of the compression rod compresses the test tube plug, the test tube plug is prevented from being loosened to leak the sample when the detection box is moved, and the bottom of the sample tube is stabilized by the test tube holder 33 to prevent the sample tube from shaking, so that the sample can be carried to a laboratory for further detection; sealed lid and test tube hold in the palm respectively has 6 to satisfy the sample demand.

The support frame 9 comprises a rod piece 91 connected with the upper box body 3, a sliding piece 92 connected with one end of the rod piece, and a support plate 93 connected with the sliding piece; the number of the supporting frames 9 is two, and the supporting frames are symmetrically distributed at the bottom of the upper box body 3; one end of the rod 91 is hinged to the bottom of the upper box 3, and the other end is hinged to a sliding piece 92 which is inserted into a groove in the support plate 93 and can slide in the groove; one end of the supporting plate is hinged on the outer wall of the electric control box 10; when the detection box is closed, the rod piece is attached to the bottom surface of the upper box body, and the supporting plate is parallel to the bottom surface of the upper box body; when the detection box is opened, the upper box body pushes the support plate to rotate around the hinge point, the sliding piece slides in the groove of the support plate and drives the rod piece to rotate around the hinge point; when the detection case was opened completely, going up the box and being vertical state, the backup pad rotated to the horizontality under the action of gravity, and the member plays the supporting role between backup pad and last box, avoids the detection case to rock and spills out test tube interior sample, also makes the instrument of placing in the instrument room 5 be in stable operational environment.

The air inlet joint 16 comprises an air inlet 161, an air sealing plate 162 arranged above the air inlet, and a third spring 163 fixedly connected with the air sealing plate; the upper part of the air sealing plate is provided with a plurality of small holes, the bottom of the air sealing plate is inserted into the upper layer of the middle cavity 15, hot gas generated in the refrigeration process of the refrigerating sheet is transmitted to the air inlet joint through a pipeline, the hole opening pipe 1334 moves downwards when a test tube is cleaned, the upper layer of the middle cavity is in a sealed state, the air pressure pushes the air sealing plate 162 to move upwards, and the hot gas is discharged from the small holes; after the washing, the trompil pipe shifts up, and inside steam got into the test tube by trompil pipe 132 and washing post, dried the test tube, and the inside atmospheric pressure of air inlet joint reduces, and air-lock board 162 resets under gravity and third spring elastic action, makes steam get into the trachea by the washing post completely to make full use of its heat dries the test tube.

The water outlet joint 17 comprises a port 173 connected with the water outlet cavity 12, a pipe orifice 171 connected with the port, and a floating ball 172 positioned inside the pipe orifice; the water outlet joint is horizontally arranged on the side surface of the water outlet cavity, the pipe orifice is connected with the water outlet of the cleaning device 1 through a pipeline, the inner diameter of the pipe orifice is gradually increased along the direction close to the interface 173, the floating ball 172 can roll in the pipe orifice, when the detection box shakes or inclines, the floating ball rolls and gradually seals the pipe orifice firmly, and the water in the water outlet cavity 12 is prevented from flowing back into the test tube to influence the drying effect; the inside cross blend stop that has of interface avoids the floater to roll to the intracavity that goes out water.

Preferably, the refrigerating chamber 4 is filled with heat insulation cotton 42 to ensure the cooling effect of the semiconductor refrigerating sheet; the heat-preservation cotton is also filled with a layer of hard cotton 41, the hard cotton is provided with a plurality of notches, and detection articles such as an enzyme detection agent, a buffer reagent, a substrate, pesticide residue rapid detection test paper, a quantitative suction tube and the like which need to be stored at low temperature are placed in the notches in a partitioning manner, so that unnecessary pollution and damage caused by mutual contact of various articles are avoided; the upper box body 3 is provided with an air outlet a and a water outlet c which are used for discharging hot air in the upper box body and water in the water outlet cavity 12; a plurality of bumps 8 are fixed in the upper box body and made of hard cotton, and when the detection box is closed, various detection instruments in the instrument chamber 5 are pressed, so that the damage caused by shaking is avoided.

The working process of the invention is as follows: opening the detection box, supporting the upper box body 3 by the support frame 9 to stabilize the box body, sampling by using scissors and tweezers, inserting the test tube added with the sample into the test tube holder 33 to fix the test tube, taking out the detection article from the refrigerating chamber 4, and detecting the sample by using an instrument in the instrument chamber 5; after detection, the test tube is inserted into the elastic support 1331 and pressed, so that water is introduced into the cleaning column 132 and the test tube is cleaned, after cleaning, the lower clamp 133 is moved upwards to reset, residual water in the cleaning column falls into the middle cavity 15, and water in the middle cavity, water after cleaning the test tube and water passing through the water pipe flow into the water outlet cavity 12 through the water outlet joint 17, so that cleaning is completed; after cleaning, heat generated by the refrigerating sheet flows into the cleaning device 1 through the pipeline through the air inlet joint 16, the test tube is dried, and the ultraviolet lamp is lightened to disinfect the test tube; if the detection is finished, inserting all the test tubes into the cleaning assembly to ensure the sealing property in the cleaning device and avoid water leakage; when the sample needs to be stored for further detection in a laboratory, the sample tube is inserted into the tube holder 33 to be fixed, and the sample tube is sealed by the sealing cover 32, so that the sample is prevented from being spilled when the detection box is moved.

Claims (10)

1. A portable detection device based on food safety comprises an upper box body (3), a cleaning device (1) positioned in the upper box body, a sample rack (2) positioned in the upper box body, a refrigerating chamber (4) connected with the upper box body, an instrument chamber (5) positioned on one side of the refrigerating chamber, an ultraviolet lamp (6) fixed in the upper box body, a plurality of emulsion tapes (7) arranged on the upper box body, a plurality of support frames (9) positioned outside the refrigerating chamber, and an electric control box (10) positioned on one side of the refrigerating chamber; the method is characterized in that: the cleaning device (1) comprises a water supply assembly (11), a middle cavity (15) connected with the water supply assembly, a plurality of cleaning assemblies (13) connected with the middle cavity, a water outlet cavity (12) connected with the cleaning assemblies, a heat dissipation fan (14) fixed on the cleaning assemblies, an air inlet joint (16) positioned on the middle cavity and a water outlet joint (17) connected with the water outlet cavity; the cleaning assembly (13) comprises an upper clamp (131), a cleaning column (132) positioned below the upper clamp, a lower clamp (133) connected with the cleaning column, and a water valve assembly (134) positioned on one side of the lower clamp; the cleaning column (132) comprises a hollow rod piece (1321) inserted in the lower clamping part, a plurality of blocking pieces (1322) arranged on the side wall of the hollow rod piece and an annular boss (1323) arranged on the hollow rod piece.

2. A portable food safety-based detection device according to claim 1, wherein: the lower clamp (133) includes a perforated tube (1334) connected to the intermediate conduit; an elastic support (1331) arranged above the perforated pipe and a spring (1333) fixed on the perforated pipe.

3. The portable food safety-based detection device of claim 1, wherein: the water valve assembly (134) comprises a blocking block (1341) in contact with the lower clamp (133), an electromagnet (1342) positioned on one side of the blocking block, and a second spring (1343) is further arranged between the blocking block and the electromagnet.

4. A portable food safety-based detection device according to claim 1, wherein: the upper clamp 131 includes an end cap 1311 and a plurality of rubber sheets 1312 fixed to the bottom of the end cap.

5. A portable food safety-based detection device according to claim 1, wherein: the sample rack (2) comprises a sliding groove (31) fixed in the upper box body (3), a sealing cover (32) connected with the sliding groove, a test tube support (33) positioned below the sealing cover, and a base (34) fixed in the upper box body.

6. The portable food safety-based detection device as recited in claim, wherein: the sealing cover (32) is composed of a pressing rod (321) and a test tube plug (322), one end of the pressing rod is inserted into the sliding groove (31), a spring is arranged at the bottom of the pressing rod, and the other end of the spring is fixedly connected with the test tube plug.

7. The portable food safety-based detection device according to claim 6, wherein: the test tube support (33) comprises a plurality of elastic blocks (331) inserted in the base (34) and annular springs (332) inserted in the elastic blocks.

8. A portable food safety-based detection device according to claim 1, wherein: the support frame (9) comprises a rod piece (91) connected with the upper box body (3), a sliding sheet (92) connected with one end of the rod piece, and a support plate (93) connected with the sliding sheet.

9. A portable food safety-based detection device according to claim 1, wherein: the air inlet joint (16) comprises an air inlet (161), an air sealing plate (162) arranged above the air inlet, and a spring (163) fixedly connected with the air sealing plate.

10. A portable food safety-based detection device according to claim 1, wherein: the water outlet joint (17) comprises a connector (173) connected with the water outlet cavity (12), a pipe orifice (171) connected with the connector, and a floating ball (173) positioned inside the pipe orifice.

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