CN220054656U

CN220054656U - Sampling and preserving device for food detection

Info

Publication number: CN220054656U
Application number: CN202223069888.3U
Authority: CN
Inventors: 李子玲
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-11-18
Filing date: 2022-11-18
Publication date: 2023-11-21
Anticipated expiration: 2032-11-18

Abstract

The utility model discloses a sampling and retaining device for food detection, which comprises a retaining box with an opening at the top, wherein a cover plate is movably contacted with the top of the retaining box, a U-shaped handle is fixedly connected with the top of the cover plate, and a support plate is fixedly connected between the front inner wall and the rear inner wall of the retaining box. According to the utility model, the cover plate can be quickly and automatically lifted and opened by the arrangement of the linkage type thread driving assembly and the supporting and ejecting assembly, a plurality of food storage pipes can be automatically pushed out when the cover plate is opened, manual pulling and inserting are not needed, labor saving and convenient taking and placing are facilitated, the plurality of food storage pipes can be automatically clamped when the cover plate is closed, the phenomenon that the plurality of food storage pipes shake, collide and damage during carrying is avoided, the stability during carrying is improved, the air blowing and cooling assembly is arranged, air blowing and cooling can be carried during carrying by hands, favorable conditions for food retention are provided, and the phenomenon that food deterioration is influenced by high temperature is reduced.

Description

Sampling and preserving device for food detection

Technical Field

The utility model relates to the technical field of food retention equipment to be detected, in particular to a sampling retention device for food detection.

Background

The food safety detection is to detect harmful substances in food according to national indexes, mainly detecting indexes of some harmful and toxic substances, such as heavy metals, aflatoxins and the like; before food detection, a storage device is needed to temporarily hold a food sample to be detected; the existing retention device is a small portable storage box and a large wheeled mobile retention cabinet (for this purpose, a sampling retention device for food detection is disclosed in publication number CN115140399a, which is a large food retention tool); for some mobile sampling and retaining works, a large-sized retaining device is inconvenient to carry, and a small-sized portable hand-held retaining box is often adopted at the moment;

the existing small portable food retention box usually adopts a mode of placing a plurality of small storage pipes into the retention box for separating and retaining various food samples; it has the following disadvantages; 1. the small storage pipes are directly inserted into the storage box, so that the phenomenon that the storage pipes are easy to shake, collide and damage to each other during carrying, and the carrying stability is affected; 2. when opening the storage box, need the manual work to stretch into alone and pull out a plurality of storage tubes, waste time and energy, the operation is inconvenient, synthesizes above phenomenon, consequently we have proposed a sample storage device for food detection for solve above-mentioned problem.

Disclosure of Invention

The utility model aims to provide a sampling and retaining device for food detection, which is used for solving the problems in the background art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a sample deposit device for food detection, includes the deposit box that the top is the opening setting, the top movable contact of deposit box has the apron, the top fixedly connected with U-shaped handle of apron, fixedly connected with extension board between the front side inner wall and the rear side inner wall of deposit box, the top bonding of extension board is fixed with the shock insulation cushion, and the top of shock insulation cushion inlays and is fixed with a plurality of cutting ferrule, all movable sleeve is equipped with the food storage tube that the bottom is the shutoff structure in a plurality of cutting ferrule;

the inner wall of the bottom of the clamping sleeve is embedded with a supporting and ejecting assembly which is in movable contact with the bottom of the corresponding food storage tube, and the supporting and ejecting assembly is used for automatically pushing the food storage tube upwards when the cover plate is opened, so that people can conveniently take and put the food storage tube;

the bottom of the cover plate is fixedly adhered with a rubber press block, the bottom of the rubber press block is movably contacted with the top ends of the food storage pipes, the arranged rubber press block is used for pressing and fixing the food storage pipes, a linkage type thread driving assembly is arranged between the bottom of the cover plate and the bottom inner wall of the retaining box, a support plate is movably sleeved on the linkage type thread driving assembly, a driving motor fixedly connected with the output shaft and the linkage type thread driving assembly is embedded and fixed on the bottom inner wall of the retaining box, and the linkage type thread driving assembly is used for driving the cover plate to lift;

fixedly connected with cooling module that bloies between the both sides inner wall of deposit box, the outside fixed connection of cooling module that bloies and extension board, the bottom of cooling module that bloies extends to the below of deposit box, fixedly connected with air-cooler on the bottom inner wall of deposit box, the end of giving vent to anger of air-cooler extends to the below of deposit box and is fixed with cooling module intercommunication that bloies, and cooling module that bloies is used for the cooling of blowing to the food storage tube.

Preferably, the supporting and ejecting assembly comprises an outer tube with the bottom being a plugging structure, an inner rod, a compression spring and a push block, wherein the compression spring and the push block are in a compressed state, the outer tube is embedded and fixed on the inner wall of the bottom of the clamping sleeve, the inner rod is slidably sleeved in the corresponding outer tube, the top end and the bottom end of the compression spring are respectively fixedly connected with the bottom end of the corresponding inner rod and the inner wall of the bottom end of the outer tube, the top end of the inner rod is fixedly connected with the bottom of the corresponding push block, the top of the push block is in movable contact with the bottom end of the corresponding food storage tube, the outer tube, the inner rod, the compression spring and the push block which are in the compressed state are matched, and when the cover plate is lifted and opened, the push block is driven to push the food storage tube upwards by the elasticity of the compression spring in the compressed state.

Preferably, the linkage screw thread drive assembly includes two montants, two screws, two sprockets and chain, two the top of montant all with the bottom fixed connection of apron, the extension board movable sleeve is established on two montants, montant thread bush is established on corresponding screw rod, the bottom that is located the screw rod on right side is rotated with the bottom inner wall of deposit box and is connected, two sprockets are fixed the cover respectively and are established on corresponding screw rod, chain drive connects on two sprockets, the bottom that is located left screw rod and driving motor's output shaft top fixed connection, two montants, two screws, two sprockets and chain cooperation of setting, when driving motor starts, can drive two screw rods rotation, and then realize driving two montants and go up and down, so realize that the drive apron goes up and down and opens.

Preferably, the cooling subassembly of blowing includes U-shaped pipe, two fixing bases and two fixed braces, two the one side that the fixing base is repulsed respectively with the both sides inner wall fixed connection of retaining box, U-shaped pipe top both ends respectively with the bottom fixed connection of corresponding fixing base, two fixed braces are all fixed to be overlapped and are established on the U-shaped pipe, two fixed braces are close one side respectively with the both sides fixed connection of extension board, the bottom of U-shaped pipe extends to the below of retaining box, the U-shaped pipe communicates with the end of giving vent to anger of air-cooler and is fixed, a plurality of air-out holes have all been seted up to the inside both sides of U-shaped pipe, the air-out hole is with a plurality of food deposit the pipe cooperatees, the U-shaped pipe that sets up, two fixing bases and two fixed braces cooperate, can be to a plurality of food deposit the pipe cooling of blowing when the air-cooler starts.

Preferably, the four corners of the bottom of the retaining box are fixedly connected with supporting legs, and a plurality of exhaust holes are formed in the inner wall of the right side of the retaining box.

Preferably, a storage battery is fixedly connected to the inner wall of the bottom of the storage box, and the storage battery is electrically connected with the driving motor and the air cooler.

Preferably, the bottom end of the vertical rod is provided with a thread groove in threaded connection with a corresponding screw rod.

Preferably, two movable perforations which are respectively in movable contact with the outer sides of the corresponding vertical rods are formed in the top of the support plate.

Compared with the prior art, the utility model has the beneficial effects that:

1. the sampling and retaining device for food detection is convenient for personnel to carry by hand through the U-shaped handle, and in addition, the driving motor, the linkage type thread driving assembly, the supporting and ejecting assembly, the cover plate and the rubber pressing block are arranged to be matched, so that the cover plate can be automatically and rapidly driven to lift and open and close when the driving motor is started, a plurality of food storage pipes can be automatically pushed out in an elastic pushing mode when the cover plate is opened, personnel are not required to manually pull and insert, labor saving and convenient taking and placing are facilitated, the rubber pressing block can be driven to downwards and automatically clamp the plurality of food storage pipes when the cover plate is closed, the phenomenon that the plurality of food storage pipes shake and collide and are damaged when the cover plate is carried is avoided, and the stability when the cover plate is carried is improved;

2. this a sample deposit device for food detection through the air-cooler that sets up and the cooperation of cooling subassembly that bloies, can deposit the pipe cooling of blowing cold wind to a plurality of foods when opening the air-cooler to this can blow the cooling work when carrying in the hand, provides the favorable condition that food remains.

According to the utility model, the cover plate can be quickly and automatically lifted and opened by the arrangement of the linkage type thread driving assembly and the supporting and ejecting assembly, a plurality of food storage pipes can be automatically pushed out when the cover plate is opened, manual pulling and inserting are not needed, labor saving and convenient taking and placing are facilitated, the plurality of food storage pipes can be automatically clamped when the cover plate is closed, the phenomenon that the plurality of food storage pipes shake, collide and damage during carrying is avoided, the stability during carrying is improved, the air blowing and cooling assembly is arranged, air blowing and cooling can be carried during carrying by hands, favorable conditions for food retention are provided, and the phenomenon that food deterioration is influenced by high temperature is reduced.

Drawings

FIG. 1 is a schematic overall perspective view of the present utility model;

FIG. 2 is a schematic view of a front cross-sectional structure of the present utility model;

fig. 3 is an enlarged schematic view of the portion a in fig. 2 according to the present utility model.

In the figure: 100. a food storage tube; 1. a retention box; 2. a cover plate; 3. a rubber briquetting; 4. a support plate; 5. shock insulation rubber cushion; 6. a cutting sleeve; 7. a vertical rod; 8. a screw; 9. a chain; 10. a sprocket; 11. a driving motor; 12. a pushing block; 13. an inner rod; 14. an outer tube; 15. a compression spring; 16. a U-shaped tube; 17. fixing the support sleeve; 18. an air outlet hole; 19. an air cooler.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific direction, be configured and operated in the specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "provided," "connected," and the like are to be construed broadly, and may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 1 to 3, the sampling retention device for food detection provided in this embodiment includes a retention box 1 with an opening at the top, a cover plate 2 movably contacting the top of the retention box 1, a U-shaped handle fixedly connected to the top of the cover plate 2, legs fixedly connected to four corners of the bottom of the retention box 1, a plurality of exhaust holes formed on the right inner wall of the retention box 1, a support plate 4 fixedly connected between the front inner wall and the rear inner wall of the retention box 1 for ventilation in the retention box 1, a shock insulation rubber cushion 5 fixedly adhered to the top of the support plate 4, a plurality of cutting ferrule 6 fixedly embedded in the top of the shock insulation rubber cushion 5, a plurality of embedding grooves respectively adhered to the outer sides of the corresponding cutting ferrule 6, the cutting ferrule 6 fixedly embedded in the top of the shock insulation rubber cushion 5 through the corresponding embedding grooves, and a food storage tube 100 with a plugging structure at the bottom end in each of the plurality of cutting ferrule 6;

the bottom inner wall of the clamping sleeve 6 is embedded with a supporting and ejecting assembly which is in movable contact with the bottom of the corresponding food storage tube 100, the supporting and ejecting assembly is used for automatically pushing the food storage tube 100 upwards when the cover plate 2 is opened so as to facilitate taking and placing by personnel, the supporting and ejecting assembly comprises an outer tube 14 with the bottom end being a plugging structure, an inner rod 13, a compression spring 15 and a push block 12 in a compressed state, the outer tube 14 is embedded and fixed on the bottom inner wall of the clamping sleeve 6, a first embedded hole is formed in the bottom inner wall of the clamping sleeve 6, a plurality of second embedded holes are formed in the top of the support plate 4, the inner wall of the first embedded hole and the inner wall of the second embedded hole are fixedly connected with the outer side of the corresponding outer tube 14, the inner rod 13 is sleeved in the corresponding outer tube 14 in a sliding manner, the top end and the bottom end of the compression spring 15 are fixedly connected with the bottom end of the corresponding inner rod 13 and the bottom end inner wall of the outer tube 14 respectively, the top of the push block 12 is fixedly connected with the bottom of the corresponding push block 12, the top of the push block 12 is in movable contact with the bottom end of the corresponding food storage tube 100, the arranged outer tube 14, the inner rod 13, the compression spring 15 in a compressed state and the push block 12 in a compressed state is matched with the bottom of the push block 12 in the compressed state is in the compressed state, and the push block 14 in the compressed state is driven by the push block 12 to be in the compressed state, and the food is driven to be lifted up and lifted by the push tube 12 and pushed out of the food 100;

the bottom of the cover plate 2 is fixedly adhered with a rubber pressing block 3, the bottom of the rubber pressing block 3 is movably contacted with the top ends of a plurality of food storage pipes 100, the arranged rubber pressing block 3 is used for pressing and fixing the food storage pipes 100, a linkage type thread driving component is arranged between the bottom of the cover plate 2 and the bottom inner wall of the retaining box 1, a support plate 4 is movably sleeved on the linkage type thread driving component, a driving motor 11 with an output shaft fixedly connected with the linkage type thread driving component is fixedly embedded on the bottom inner wall of the retaining box 1, the linkage type thread driving component is used for driving the cover plate 2 to lift and open and close, the linkage type thread driving component comprises two vertical rods 7, two screw rods 8, two chain wheels 10 and a chain 9, the top ends of the two vertical rods 7 are fixedly connected with the bottom of the cover plate 2, the support plate 4 is movably sleeved on the two vertical rods 7, the top of the support plate 4 is provided with two movable perforations which are respectively in movable contact with the outer sides of the corresponding vertical rods 7 to play the effect of movably passing through the vertical rods 7, wherein the top of the shock insulation rubber cushion 5 is provided with two through holes which are respectively in movable contact with the outer sides of the corresponding vertical rods 7 to play the effect of passing through the vertical rods 7, the vertical rods 7 are sleeved on the corresponding screw rods 8 in a threaded manner, the bottom ends of the vertical rods 7 are provided with thread grooves which are in threaded connection with the corresponding screw rods 8, the effect of driving the corresponding vertical rods 7 to lift when the screw rods 8 rotate is played by utilizing the threaded connection relation between the screw rods 8 and the thread grooves, the bottom ends of the screw rods 8 positioned on the right side are in rotary connection with the bottom inner wall of the retention box 1, a support bearing is fixedly connected on the bottom inner wall of the retention box 1, the inner side of an inner ring of the support bearing is fixedly connected with the outer sides of the screw rods 8 on the right side, the screw rods 8 on the right side are in rotary connection with the bottom inner wall of the retention box 1 through the support bearing, the two chain wheels 10 are respectively fixedly sleeved on the corresponding screw rods 8, the chain 9 is connected to the two chain wheels 10 in a transmission manner, the bottom end of the screw rod 8 positioned at the left side is fixedly connected with the top end of an output shaft of the driving motor 11, the two vertical rods 7, the two screw rods 8, the two chain wheels 10 and the chain 9 are matched, and when the driving motor 11 is started, the two screw rods 8 can be driven to rotate, so that the two vertical rods 7 are driven to lift, and the lifting and the opening of the driving cover plate 2 are realized;

fixedly connected with cooling module of blowing between the inner wall of both sides of the deposit box 1, cooling module of blowing and outside fixedly connected with of the extension board 4, the bottom of cooling module of blowing extends to the below of deposit box 1, fixedly connected with air-cooler 19 on the inner wall of the bottom of deposit box 1, fixedly connected with battery on the inner wall of the bottom of deposit box 1, battery and driving motor 11 and air-cooler 19 electric connection play the effect for driving motor 11 and air-cooler 19 power supply, the end of giving vent to anger of air-cooler 19 extends to the below of deposit box 1 and is fixed with cooling module of blowing intercommunication, cooling module of blowing is used for cooling to food storage tube 100, wherein cooling module of blowing includes U-shaped pipe 16, two fixing bases and two fixed braces 17, one side that two fixing bases repel each other is fixedly connected with the inner wall of both sides of deposit box 1 respectively, the two ends of the top of the U-shaped pipe 16 are fixedly connected with the bottoms of the corresponding fixing seats respectively, two fixing support sleeves 17 are fixedly sleeved on the U-shaped pipe 16, one side, close to the two fixing support sleeves 17, of each fixing support sleeve is fixedly connected with two sides of the support plate 4 respectively, the bottom of the U-shaped pipe 16 extends to the lower part of the retaining box 1, two penetrating through holes for the U-shaped pipe 16 to pass upwards are formed in the inner wall of the bottom of the retaining box 1, the U-shaped pipe 16 is communicated and fixed with the air outlet end of the air cooler 19, a plurality of air outlet holes 18 are formed in two inner sides of the U-shaped pipe 16, the air outlet holes 18 are matched with the plurality of food storage pipes 100, and the U-shaped pipe 16, the two fixing seats and the two fixing support sleeves 17 are matched, so that when the air cooler 19 is started, the air can be blown to the plurality of food storage pipes 100, and temporary retention of foods to be detected is facilitated; according to the utility model, the cover plate 2 can be quickly and automatically lifted and opened by the arrangement of the linkage type thread driving assembly and the supporting and ejecting assembly, a plurality of food storage pipes 100 can be automatically pushed out when the cover plate 2 is opened, manual pulling and inserting of personnel are not needed, labor saving and convenient taking and placing are facilitated, the plurality of food storage pipes 100 can be automatically clamped when the cover plate 2 is closed, the phenomenon that the plurality of food storage pipes 100 shake, collide and damage during carrying is avoided, the stability during carrying is improved, the air blowing and cooling assembly is arranged, air blowing and cooling can be carried out during carrying by hands, favorable conditions for food retention are provided, and the phenomenon that food deterioration is influenced by high temperature is reduced.

The application method of the embodiment is as follows: the U-shaped handle is convenient for people to carry the device, when a plurality of food storage pipes 100 are taken and placed, the driving motor 11 is started positively to drive the left screw rod 8 to rotate, the left screw rod 8 drives the left chain wheel 10 to rotate, the left chain wheel 10 drives the right chain wheel 10 to rotate through the chain 9, the right chain wheel 10 drives the right screw rod 8 to rotate, the two screw rods 8 rotate to drive the two vertical rods 7 to move upwards, the two vertical rods 7 drive the cover plate 2 to move upwards, and the cover plate 2 drives the rubber press block 3 to move upwards, so that the cover plate 2 can be quickly and automatically lifted and opened;

the rubber pressing block 3 gradually releases the pressure on the food storage tubes 100 and is separated from the food storage tubes, at the moment, the elastic force of the compression spring 15 in a compressed state drives the corresponding inner rod 13 to slide upwards in the outer tube 14, the inner rod 13 drives the corresponding pushing block 12 to move upwards, and the pushing block 12 pushes the corresponding food storage tubes 100 upwards to lift and move out, so that the food storage tubes 100 can be automatically pushed out when the cover plate 2 is opened, and labor saving and convenient taking and placing are facilitated for personnel;

after food samples to be detected are placed in the food storage tubes 100 respectively, and when temporary storage is needed, the driving motor 11 is started in the reverse direction, and the movement direction of the driving motor 11 is completely opposite to that of the driving motor 11 started in the forward direction, at the moment, the cover plate 2 is converted into downward movement and drives the rubber press block 3 to move downwards, the rubber press block 3 starts to press downwards when being moved downwards to be in contact with the plurality of food storage tubes 100, under the pressing force, the food storage tubes 100 slide downwards in the corresponding clamping sleeves 6 and press the push blocks 12, so that the push blocks 12 move downwards and drive the corresponding inner rods 13 to compress the compression springs 15, the clamping of the plurality of food storage tubes 100 is realized under the upward tightening force generated by the compression of the compression springs 15 and the pressure of the rubber press block 3, the operation is simple and convenient in a mode of synchronously clamping the plurality of food storage tubes 100, the phenomenon that the plurality of food storage tubes 100 shake, collide and break during carrying can be avoided, and the stability during carrying is improved;

when the portable food storage tube is carried, a person can start the air cooler 19 to blow cold air into the U-shaped tube 16, and the cold air is blown out through the air outlet holes 18 to blow and cool the food storage tubes 100, so that favorable conditions for food storage can be provided through cooling, and the phenomenon that food deterioration is influenced by high temperature is reduced.

Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A sample retention device for food detection, is the deposit case (1) of opening setting including the top, its characterized in that: the top movable contact of the retaining box (1) is provided with a cover plate (2), the top of the cover plate (2) is fixedly connected with a U-shaped handle, a support plate (4) is fixedly connected between the front side inner wall and the rear side inner wall of the retaining box (1), the top of the support plate (4) is fixedly adhered with a shock insulation rubber mat (5), the top of the shock insulation rubber mat (5) is embedded and fixed with a plurality of cutting sleeves (6), and food storage pipes (100) with the bottom of a plugging structure are movably sleeved in the cutting sleeves (6);

the bottom inner wall of the cutting sleeve (6) is embedded with a supporting and ejecting assembly which is movably contacted with the bottom of the corresponding food storage pipe (100);

the bottom of the cover plate (2) is fixedly adhered with a rubber pressing block (3), the bottom of the rubber pressing block (3) is movably contacted with the top ends of the food storage pipes (100), a linkage type thread driving assembly is arranged between the bottom of the cover plate (2) and the bottom inner wall of the storage box (1), a support plate (4) is movably sleeved on the linkage type thread driving assembly, and a driving motor (11) with an output shaft fixedly connected with the linkage type thread driving assembly is embedded and fixed on the bottom inner wall of the storage box (1);

fixedly connected with cooling module that bloies between the both sides inner wall of deposit box (1), the outside fixed connection of cooling module that bloies and extension board (4), the bottom of cooling module that bloies extends to the below of deposit box (1), fixedly connected with air-cooler (19) on the bottom inner wall of deposit box (1), the end of giving vent to anger of air-cooler (19) extends to the below of deposit box (1) and is fixed with cooling module intercommunication that bloies.

2. A sample retention device for use in food testing according to claim 1, wherein: the supporting and ejecting assembly comprises an outer tube (14) with the bottom end being of a plugging structure, an inner rod (13), a compression spring (15) and a push block (12), wherein the compression spring (15) and the push block (12) are in a compressed state, the outer tube (14) is embedded and fixed on the inner bottom wall of a clamping sleeve (6), the inner rod (13) is slidably sleeved in the corresponding outer tube (14), the top end and the bottom end of the compression spring (15) are fixedly connected with the bottom end of the corresponding inner rod (13) and the inner bottom end wall of the outer tube (14) respectively, the top end of the inner rod (13) is fixedly connected with the bottom of the corresponding push block (12), and the top of the push block (12) is in movable contact with the bottom end of the corresponding food storage tube (100).

3. A sample retention device for use in food testing according to claim 1, wherein: the linkage type screw drive assembly comprises two vertical rods (7), two screw rods (8), two chain wheels (10) and a chain (9), wherein the top ends of the vertical rods (7) are fixedly connected with the bottom of the cover plate (2), the support plate (4) is movably sleeved on the two vertical rods (7), the screw rods (7) are sleeved on the corresponding screw rods (8), the bottom ends of the screw rods (8) located on the right side are rotatably connected with the inner wall of the bottom of the storage box (1), the two chain wheels (10) are fixedly sleeved on the corresponding screw rods (8) respectively, the chain (9) is connected to the two chain wheels (10) in a transmission mode, and the bottom ends of the screw rods (8) located on the left side are fixedly connected with the top end of an output shaft of the driving motor (11).

4. A sample retention device for use in food testing according to claim 1, wherein: the air blowing cooling assembly comprises a U-shaped pipe (16), two fixing seats and two fixing support sleeves (17), wherein one repulsive side of each fixing seat is fixedly connected with the inner walls of two sides of the reserving box (1), two ends of the top of the U-shaped pipe (16) are fixedly connected with the bottoms of the corresponding fixing seats respectively, the two fixing support sleeves (17) are fixedly sleeved on the U-shaped pipe (16), one adjacent side of each fixing support sleeve (17) is fixedly connected with two sides of the support plate (4) respectively, the bottom of the U-shaped pipe (16) extends to the lower portion of the reserving box (1), the U-shaped pipe (16) is communicated and fixed with the air outlet ends of the air cooler (19), a plurality of air outlet holes (18) are formed in two sides of the inner portion of the U-shaped pipe (16), and the air outlet holes (18) are matched with the plurality of food storing pipes (100).

5. A sample retention device for use in food testing according to claim 1, wherein: the bottom four corners of the retaining box (1) are fixedly connected with supporting legs, and a plurality of exhaust holes are formed in the inner wall of the right side of the retaining box (1).

6. A sample retention device for use in food testing according to claim 1, wherein: the storage box is characterized in that a storage battery is fixedly connected to the inner wall of the bottom of the storage box (1), and the storage battery is electrically connected with a driving motor (11) and an air cooler (19).

7. A sample retention device for use in food testing according to claim 3, wherein: the bottom of the vertical rod (7) is provided with a thread groove in threaded connection with a corresponding screw rod (8).

8. A sample retention device for use in food testing according to claim 3, wherein: two movable perforations which are respectively in movable contact with the outer sides of the corresponding vertical rods (7) are formed in the top of the support plate (4).