Scanner for food safety tracing labels

Abstract

The invention relates to the field of food traceability scanning equipment, in particular to a scanner for food safety traceability labels, which comprises a scanner main body, a lens and a shell, the lens is connected below the scanner main body, the shell is positioned below the lens and connected with the scanner main body, and the scanner further comprises a power assembly, an air inlet assembly, a defrosting assembly and an air outlet. The problems that large refrigerated food package surface unevenness and surface frosting are inconvenient to handle through single-person operation, and the scanning effect is affected are solved, a to-be-scanned object is pressed by one hand, then the scanner is held by the other hand to be placed on the left side of a bar code, a packaging bag is adsorbed through cooperation of the air suction assembly and the power assembly, and the scanning effect is improved. And then the scanner main body is held by hand to move rightwards to flatten the packaging bag, and the surface of the flattened packaging bag is defrosted, so that the problem that large refrigerated food is inconvenient to scan during single-person operation is solved, the labor cost is reduced, and the scanning effect is ensured.

Description

Technical Field

[0001] The invention relates to the field of food traceability scanning equipment, in particular to a scanner for food safety traceability labels. Background Art

[0002] The food safety information traceability platform uses blockchain and other technologies to write food information through QR codes or barcodes, including but not limited to food raw materials, procurement, production and flow, etc. In order to identify this information, corresponding scanning equipment is required. The scanner scans the traceability code on the surface of the food packaging through laser or infrared to view the traceability results.

[0003] Plastic packaging bags used for refrigerated food are a material that many food packaging uses nowadays. They are moisture-proof, waterproof and wear-resistant, and can maintain the taste and freshness of the food in the packaging bags. However, the surface of this type of packaging is prone to wrinkles, resulting in an uneven barcode area. In addition, due to the cold storage environment, the surface of the packaging is prone to frost, which makes it difficult to identify the barcode information, making it very inconvenient to scan it for traceability.

[0004] In order to solve this problem, people usually manually stretch and smooth the barcode area of ​​the packaging bag and wipe the frost on its surface, and then scan it with a scanner. However, when dealing with some products with relatively large packaging bags, such as rice and flour packaging bags, since the volume of rice and flour packaging bags is usually relatively large, the range of its barcode area will also increase accordingly, and human hands are usually unable to complete the coverage of the entire barcode area. At this time, one person is often required to wipe the package with both hands, stretch it open and hold it down, and then another person holds a scanner to scan the product barcode. The operation is relatively cumbersome and greatly wastes manpower. However, when operated by one person, it is difficult to cover and stretch the packaging bag in the barcode area with one hand, and the operation is extremely inconvenient. When faced with a large number of products that need to be scanned, it will seriously affect work efficiency.

[0005] Therefore, a scanner for food safety traceability labels is proposed. Summary of the invention

[0006] The purpose of the present invention is to provide a scanner for food safety traceability labels, which solves the problem that it is inconvenient to smooth and defrost some refrigerated foods with relatively large packages and uneven surfaces when operated by a single person. The uneven area is gradually smoothed along the forward direction by suction, and the inhaled air is heated by compression, and then the heated air is blown onto the surface of the package to stop frosting in a short time, and the defrosting component is driven by the flow of the exhausted air to defrost the smoothed package.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A scanner for food safety traceability labels comprises a scanner body, a lens and a shell, wherein the lens is connected below the scanner body, and the shell is located below the lens and connected to the scanner body. The scanner also comprises a power assembly, an air intake assembly, a defrost assembly and an air outlet, wherein the power assembly is connected to the rear side of the shell, the air intake assembly is connected to the left side of the shell and communicates with the power assembly, the defrost assembly is connected to the lower side of the shell, and the air outlet is arranged on the shell. The power assembly operates and inhales air through the air intake assembly to generate negative pressure to suck up a packaging bag, and the inhaled air enters the power assembly, is compressed and heated, and is blown out through the air outlet, and the air passing through the air outlet drives the defrost assembly to scrape off the frost on the surface of the packaging bag that has been adsorbed and leveled.

[0009] The scanner traces food safety by identifying the information stored on the barcode. However, some refrigerated food packaging bags are prone to wrinkles. In addition, frost is easy to form on the plastic packaging bags of refrigerated foods, which will block the barcode information, affect the scanning effect, and reduce work efficiency. At this time, it is necessary to wipe the frost on the surface of the packaging, and then smooth the packaging in the barcode area to facilitate scanning of the barcode with the scanner. However, when faced with a large number of foods that need to be scanned, if it is only operated manually, the following situation will be faced. First, one hand is needed to hold the scanner, and then the other hand must complete the smoothing of the packaging and wipe off the frost on the surface of the packaging with a rag. However, after smoothing the packaging by hand, it is necessary to continue to press the packaging with the hand to prevent it from becoming uneven again. At this time, it is very inconvenient to take a rag and In addition to wiping the package, usually, when wiping an item, in addition to holding the rag with one hand, you also need to hold the item to be wiped with the other hand, otherwise as the rag wipes, the item will move with the movement of the rag, which will not only affect the wiping effect but also reduce the wiping efficiency. Therefore, when faced with a large number of refrigerated foods that need to be scanned, relying solely on manual work to smooth out, wipe and scan barcodes on the package is very inefficient. Through the above scheme, suction is generated by the power component to suck up the wrinkled package and then flatten it, and the flattened package is defrosted by the defrost component, and the inhaled air is pressurized, heated and blown out, so that the surface of the defrosted package is briefly heated up, thereby suspending frosting and temporarily suppressing frosting of the packaging bag, thereby ensuring the scanning effect and scanning efficiency of the scanner.

[0010] Preferably, the air intake assembly includes an air inlet, an air cavity and an air intake pipe, the air inlet and the air cavity are both arranged on the left side of the shell and are interconnected, the air intake pipe is arranged on the rear side of the shell and is connected to the air cavity, and the opening direction of the air inlet is inclined and opposite to the forward direction. On the one hand, the air suction direction is coordinated with the forward direction to better achieve the effect of flattening the package during movement. On the other hand, since the shape of the air inlet is not a straight channel, it can effectively prevent frost, plastic or other debris from being sucked into the air cavity along the air inlet.

[0011] Preferably, a partition is provided between the air inlet and the air cavity, and a plurality of air holes are opened on the partition, and the air holes are circular holes. Since the air inlet pipe is located on the upper side of the air cavity, the suction generated by the air inlet pipe will gradually decrease from top to bottom. Therefore, in order to achieve similar suction effects at different positions, the diameter of the air holes is gradually increased from back to front, thereby balancing the suction and making the adsorption forces at different positions similar.

[0012] Preferably, the air intake assembly also includes an air supply port, which is opened on the left side of the shell and connected to the air inlet. The air supply port is inclined and the slope is the same as the inclination angle of the air inlet opening. The setting of the air supply port can prevent the packaging bag from completely blocking the air inlet while the internal air is continuously sucked out, causing damage to internal parts. It can also prevent excessive suction from damaging food packaging. In addition, the design of the air supply port enables the device to provide appropriate adsorption force, which can facilitate the movement of the device during the adsorption process.

[0013] Preferably, the air intake assembly also includes a baffle, which is connected to the air inlet and located inside the air inlet, and the baffle is connected and located on the upper side of the air supply port. The baffle is inclined and the slope is the same as the inclination angle of the air inlet opening, so as to block the inhaled frost, plastic particles and other debris, and prevent the debris from blocking the air holes or entering the air cavity.

[0014] Preferably, the power assembly includes a motor, a rotor, a processing chamber and an exhaust pipe, the motor is connected to the outer wall of the rear side of the shell, the processing chamber is opened inside the rear side of the shell, the rotor is connected to the motor through an eccentric shaft and is located in the processing chamber, the rotor is in the shape of a Leno triangle, the processing chamber is divided into an intake chamber, a compression chamber and an exhaust chamber by the rotor, the intake chamber is connected to the intake pipe, the exhaust pipe is arranged in the shell and connected to the exhaust chamber, the other end of the exhaust pipe is connected to the air outlet, the motor drives the rotor to move in the processing chamber, and the process of drawing in, compressing and discharging air is realized by changing the spatial size of different areas in the processing chamber. When air is drawn into the intake chamber from the intake assembly, negative pressure is generated near the air inlet, and then suction is generated on the package near the opening of the air inlet to lift the package and level it, and then the air in the intake chamber enters the compression chamber during the movement of the rotor, and the air is compressed and heated as the rotor squeezes, and finally as the rotor moves, the compressed and heated air enters the exhaust chamber and is discharged.

[0015] Preferably, the defrost assembly includes a scraper, a wind wheel, a transmission rod, a driven wheel, a cam 1, a cam 2 and a spring, the front end of the scraper is hingedly connected to the outer shell, the cam 2 is connected to the rear end of the scraper, the spring is connected to the rear end of the scraper, and the other end of the spring is connected to the outer shell, the wind wheel and the driven wheel are both connected to the outer shell, the two ends of the transmission rod are hinged to the wind wheel and the driven wheel respectively, the wind wheel is arranged in the air outlet, and the cam 1 is connected to the driven wheel. In this scheme, the initial position of the scraper is tilted, which can make the frost on the packaging bag flow out to one side along the scraper to avoid excessive frost accumulation on the scraper, and can drive the scraper to rotate back and forth at a small angle with one end as the axis, thereby improving the scraping effect of the scraper on frost.

[0016] Preferably, the wind wheel is provided with a fan blade, and a plurality of through holes are opened on the fan blade. On the one hand, the direction setting of the fan blade helps to ensure the rotation direction of the wind wheel and thus ensure the normal operation of the scraper. On the other hand, the setting of the through holes can avoid energy loss of the circulating air and reduce flow resistance.

[0017] Preferably, the scraper is arranged at an angle, and a microfiber coating is provided at the bottom of the scraper, which can achieve a better defrosting effect on one hand, and avoid scratches on the surface of the packaging bag on the other hand.

[0018] Preferably, the air outlet is arranged on the rear side of the shell and is connected to the exhaust pipe. The air outlet opening is facing forward and is inclined, so that the compressed and heated air can be better blown to the surface of the defrosted packaging bag, causing it to heat up briefly, thereby inhibiting frost during the scanning period and ensuring the scanning efficiency.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The present invention solves the problem that it is inconvenient for a single person to handle the uneven surface of large refrigerated food packaging, and the problem that surface frost affects the scanning effect. By pressing the object to be scanned with one hand, and then holding the scanner with the other hand and placing it on the left side of the barcode, the packaging bag is adsorbed through the cooperation of the suction component and the power component, and then the packaging bag is smoothed by moving the handheld scanner body to the right, and the smoothed surface of the packaging bag is defrosted, which solves the problem that it is inconvenient to scan large refrigerated foods when a single person is operating, reduces labor costs, and finally heats the packaging surface by hot air to temporarily suppress its re-frost, thereby ensuring the scanning effect and improving the scanning efficiency.

[0021] 2. By setting up the rotor and the processing chamber, the rotor generates negative pressure and suction during rotation to achieve adsorption on the surface of the packaging bag. On the other hand, the inhaled air is compressed and heated by the rotation of the rotor in the processing chamber, and then the heated air is blown to the surface of the packaging bag. In addition to blowing away the frost remaining on the surface, it can also heat the packaging bag, thereby temporarily suppressing its frost and ensuring the scanning effect of the barcode.

[0022] 3. By setting up the defrost component, on the one hand, the scraper is tilted in the initial state, so that the frost scraped by the scraper can flow out to one side along the scraper, which can avoid excessive frost accumulation on the scraper and affect the scraping effect of the scraper. On the other hand, the scraper can rotate at a small angle, and the scraper can adjust the scraping frequency of the scraper according to the flow rate of the blown air, thereby improving the scraping effect of the scraper on frost, thereby ensuring the scanning effect of the barcode. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 It is a schematic structural diagram of the outer shell part of the present invention;

[0025] Figure 3 A partial cross-sectional view of an air intake assembly of the present invention;

[0026] Figure 4 A partial cross-sectional view of the air intake assembly of the present invention from another perspective;

[0027] Figure 5 It is a partial cross-sectional view of the power assembly of the present invention;

[0028] Figure 6 is an enlarged view of the defrost assembly of the present invention;

[0029] Figure 7 For the present invention Figure 6 A magnified view of point A;

[0030] Figure 8 The figure is a schematic cross-sectional view of the shape of the air outlet of the present invention.

[0031] In the figure: 1. Scanner body; 2. Lens; 3. Shell; 4. Power assembly; 401. Motor; 402. Rotor; 403. Processing chamber; 4031. Intake chamber; 4032. Compression chamber; 4033. Exhaust chamber; 404. Exhaust pipe; 5. Air intake assembly; 501. Air inlet; 502. Air cavity; 503. Intake pipe; 504. Partition; 505. Air hole; 506. Air supply port; 507. Baffle; 6. Defrost assembly; 601. Scraper; 602. Wind wheel; 6021. Fan blade; 6022. Through hole; 603. Transmission rod; 604. Driven wheel; 605. Convex plate 1; 606. Convex plate 2; 607. Spring; 7. Air outlet. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] See also Figures 1 to 8 The present invention provides a scanner for food safety traceability labels, and the technical solution is as follows:

[0034] For details, please refer to Figure 1 and Figure 2 A scanner for food safety traceability labels includes a scanner body 1, a lens 2 and a shell 3. The handle of the scanner body 1 is provided with a control button, which can control the internal circuit board, and then control the device to perform scanning and other actions. The lens 2 is connected to the bottom of the scanner body 1. Above the lens 2, that is, inside the scanner body 1, a scanning device is installed, which can be an infrared scanner or a laser scanner. The shell 3 is located below the lens 2 and connected to the scanner body 1. It also includes a power component 4, an air intake component 5, a defrost component 6 and an air outlet 7. The power component 4 is connected to the rear side of the shell 3. The air intake component 5 It is connected to the left side of the housing 3 and is connected to the power assembly 4. After the power assembly 4 is running, air is sucked in through the air intake assembly 5 to generate negative pressure to suck up the packaging bag, and then the wrinkled packaging is sucked up to make it flat; the defrost assembly 6 is connected to the lower side of the housing 3, and the air passing through the air outlet 7 drives the defrost assembly 6 to scrape off the frost on the surface of the packaging bag that has been adsorbed and flattened. At the same time, the inhaled air enters the power assembly 4, is compressed and heated, and is blown out through the air outlet 7, so that the surface of the defrosted packaging is temporarily heated, so that it stops frosting and temporarily suppresses frosting of the packaging bag, thereby ensuring the scanning effect and scanning efficiency of the scanner;

[0035] The air outlet 7 is arranged at the rear side of the shell 3 and is connected to the exhaust pipe 404. The air outlet 7 opens forward, and the upper side of the air outlet 7 is inclined so that the compressed and heated air is blown to the surface of the defrosted packaging bag, causing it to heat up briefly, thereby inhibiting frost during the scanning period and ensuring the scanning efficiency.

[0036] like Figure 3 and Figure 4 As shown, the air intake assembly 5 includes an air inlet 501, an air cavity 502 and an air intake pipe 503. The air inlet 501 and the air cavity 502 are both arranged on the left side of the housing 3 and are interconnected. The air inlet 501 is in an inclined L-shape, and the opening direction of the air inlet 501 is inclined and opposite to the forward direction. The main part of the air cavity 502 is a square chamber, and an arc chamfer is arranged at the front end thereof, which plays a certain role in guiding the air inhaled by the air intake pipe 503. The air intake pipe 503 is arranged at the rear side of the housing 3 and is connected with the air cavity 502. The other end of the air intake pipe 503 is connected to the power assembly 4 to deliver the inhaled air into the power assembly 4.

[0037] A partition 504 is provided between the air inlet 501 and the air cavity 502, which can prevent larger foreign objects from being sucked into the device and causing damage to the device. A plurality of air holes 505 are provided on the partition 504, and gas is sucked through the air holes 505 with smaller openings to avoid sucking in larger foreign objects. The air pressure and air flow rate can also be increased through a relatively narrow passage. The air holes 505 are circular holes. Since the air inlet pipe 503 is located on the upper side of the air cavity 502, the suction force generated by the air inlet pipe 503 will gradually decrease from top to bottom. Therefore, in order to achieve a similar suction effect at different positions, the diameter of the air holes 505 is gradually increased from back to front, thereby balancing the suction force and making the adsorption force at different positions similar in magnitude.

[0038] The air inlet component 5 also includes an air supply port 506, which is opened on the left side of the shell 3 and is connected to the air inlet 501. The air supply port 506 is set as a square hole, the number of which is less than the number of air holes 505. The air supply port 506 is tilted and the slope is the same as the tilt angle of the opening of the air inlet 501. The setting of the air supply port 506 can avoid damage to internal parts after the air inlet 501 is blocked, and can also avoid damage to food packaging due to excessive suction; a baffle 507 is set on the upper side of the air supply port 506. The baffle 507 is a square plate and is set at the middle node of the "L" shape of the air inlet 501. The baffle 507 is connected to the air inlet 501 and is located inside the air inlet 501. The baffle 507 is tilted and the slope is the same as the tilt angle of the opening of the air inlet 501, which can block the inhaled frost, plastic particles and other debris, and prevent the debris from blocking the air holes 505 or entering the air cavity 502.

[0039] like Figure 5 As shown, the power assembly 4 includes a motor 401, a rotor 402, a processing chamber 403 and an exhaust pipe 404. The motor 401 is connected to the outer wall of the rear side of the housing 3, and the processing chamber 403 is opened inside the rear side of the housing 3. The overall shape of the processing chamber 403 is a long waist hole. The rotor 402 is connected to the motor 401 through an eccentric shaft and is located in the processing chamber 403. The shape of the rotor 402 is a Leno triangle. The processing chamber 403 is divided into an intake chamber 4031, a compression chamber 4032 and an exhaust chamber 4033 by the rotor 402. 4031 is connected to the air inlet pipe 503. After the air is drawn into the suction chamber 4031 from the air inlet assembly 5, the air is sent to the compression chamber 4032 and compressed as the rotor 402 rotates. Finally, as the rotor 402 moves, the compressed and heated air enters the exhaust chamber 4033 and is discharged. The exhaust pipe 404 is arranged in the outer shell 3 and is connected to the exhaust chamber 4033. The other end of the exhaust pipe 404 is connected to the air outlet 7. Therefore, the hot air sent out from the exhaust chamber 4033 passes through the exhaust pipe 404 and is blown toward the surface of the packaging bag from the air outlet 7.

[0040] like Figure 6 and Figure 7 As shown, the defrosting assembly 6 includes a scraper 601, a wind wheel 602, a transmission rod 603, a driven wheel 604, a convex plate 1 605, a convex plate 2 606 and a spring 607. The front end of the scraper 601 is hingedly connected to the housing 3. The initial position of the scraper 601 is tilted, which can drain the frost scraped from the packaging bag and make it flow out to one side along the scraper 601 to avoid excessive frost accumulation on the scraper 601; at the same time, the front end of the scraper 601 is hinged to the housing 3, and the other end is a free end, so that it can be rotated back and forth at a small angle with its front end as the axis, thereby improving the scraping effect of the scraper 601 on frost. The bottom of the scraper 601 is provided with a microfiber coating, which is similar to the effect of using a relatively rough rag to wipe the frost on the packaging surface. On the one hand, it can make the defrosting effect better, and on the other hand, it can also avoid scratches on the surface of the packaging bag.

[0041] The convex plate 2 606 is connected to the rear end of the scraper 601, the spring 607 is connected to the rear end of the scraper 601, and the other end of the spring 607 is connected to the outer shell 3, the wind wheel 602 and the driven wheel 604 are both connected to the outer shell 3, the convex plate 1 605 is connected to the driven wheel 604, the two ends of the transmission rod 603 are respectively hinged to the wind wheel 602 and the driven wheel 604, the wind wheel 602 is arranged in the air outlet 7, and the wind wheel 602 is provided with a fan blade 6021. The direction setting of the fan blade 6021 can help ensure the rotation direction of the wind wheel 602, thereby ensuring the normal operation of the scraper 601. At the same time, a plurality of through holes 6022 are opened on the fan blade 6021, and the through hole 6022 is in the shape of a circular hole, which can avoid energy loss of circulated air and reduce flow resistance.

[0042] The specific working principle is as follows: when there are uneven areas within the barcode range, and when there is frost on the package surface. First, hold the scanner body 1, cover the shell 3 on the flat area outside the barcode range, and then start the motor 401 to generate suction to suck up the package to a certain extent, and scrape the frost on the package surface through the defrosting component 6, and at the same time pressurize and heat the inhaled air and blow it out, so that the defrosted package surface is temporarily heated up, thereby suspending the frost. In this continuous process, the handheld scanner body 1 moves continuously in the forward direction, that is, in the direction of the barcode area (due to the setting of the air supply port 506, the device can slide along the package surface during the package adsorption process to avoid adsorbing the package too tightly and making it unable to move), and then defrost after smoothing the package, and temporarily suppress the frost on the package bag. When the barcode area is smoothed and cleaned, the barcode area is completely exposed in front of the lens 2, and then the barcode is scanned and traced.

[0043] Specifically, first, the motor 401 drives the rotor 402 to move in the processing chamber 403, and realizes the process of drawing in, compressing and exhausting air by changing the size of the space in different areas of the processing chamber 403. That is, air is drawn from the air intake assembly 5 into the air suction chamber 4031. In this process, negative pressure is generated near the air inlet 501, and then suction is generated on the package near the opening of the air inlet 501, and the package is lifted and leveled by suction. In this process, the device is slightly lifted to a certain height, and then the packaging bag is also lifted to a certain height, and then a certain pulling force is provided to the nearby packaging bags to prevent the flattened package from becoming uneven again;

[0044] The air sucked into the suction chamber 4031 then enters the compression chamber 4032 during the movement of the rotor 402. As the rotor 402 is squeezed, the volume of the compression chamber 4032 gradually decreases, thereby compressing and heating the air in the compression chamber 4032.

[0045] As the rotor 402 moves, the compressed and heated air enters the exhaust chamber 4033 and moves along the exhaust pipe 404 toward the air outlet 7. In this process, the flowing air drives the wind wheel 602 to rotate, and drives the driven wheel 604 to rotate through the transmission rod 603, so that the convex plate 1 605 on the driven wheel 604 continuously hits the convex plate 2 606, thereby causing the scraper 601 to swing. At the same time, the scraper 601 will continuously rebound under the action of the spring 607, so that the scraper 601 can continuously swing within a small range, thereby defrosting the flattened packaging surface.

[0046] At the same time, the compressed and heated air is blown out from the air outlet 7 through the exhaust pipe 404. Since the air outlet 7 is arranged to the right of the air inlet 501, that is, behind the forward direction, the blown hot air can briefly heat the flattened and defrosted packaging surface, thereby temporarily suppressing frost on the packaging bag and ensuring the subsequent scanning effect.

[0047] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A food safety traceability label scanner, comprising a scanner body (1), a lens (2) and a housing (3), wherein the lens (2) is connected below the scanner body (1), and the housing (3) is located below the lens (2) and connected to the scanner body (1), characterized in that: It also comprises a power assembly (4), an air intake assembly (5), a defrost assembly (6) and an air outlet (7), wherein the power assembly (4) is connected to the rear side of the outer shell (3), the air intake assembly (5) is connected to the left side of the outer shell (3) and is in communication with the power assembly (4), the defrost assembly (6) is connected to the lower side of the outer shell (3), and the air outlet (7) is arranged on the outer shell (3). When the power assembly (4) operates, it inhales air through the air intake assembly (5) to generate negative pressure to suck up the packaging bag. After the inhaled air enters the power assembly (4), it is compressed and heated and blown out through the air outlet (7). The air passing through the air outlet (7) drives the defrost assembly (6) to scrape off the frost on the surface of the packaging bag after being adsorbed and leveled.

2. A food safety traceability label scanner according to claim 1, characterized in that: The air intake assembly (5) comprises an air intake port (501), an air cavity (502) and an air intake pipe (503); the air intake port (501) and the air cavity (502) are both arranged on the left side of the housing (3) and are interconnected; the air intake pipe (503) is arranged on the rear side of the housing (3) and is interconnected with the air cavity (502); the opening direction of the air intake port (501) is arranged obliquely and is opposite to the forward direction.

3. A food safety traceability label scanner according to claim 2, characterized in that: A partition (504) is provided between the air inlet (501) and the air cavity (502), and a plurality of air holes (505) are provided on the partition (504). The air holes (505) are circular holes, and the diameter of the air holes (505) increases gradually from the back to the front.

4. A food safety traceability label scanner according to claim 2, characterized in that: The air intake assembly (5) further comprises an air supply port (506), wherein the air supply port (506) is disposed on the left side of the housing (3) and is connected to the air intake port (501), and the air supply port (506) is arranged at an inclination and has a slope which is the same as the inclination angle of the opening of the air intake port (501).

5. A food safety traceability label scanner according to claim 4, characterized in that: The air intake assembly (5) further comprises a baffle (507), wherein the baffle (507) is connected to the air intake port (501) and is located inside the air intake port (501), and the baffle (507) is connected and located on the upper side of the air supply port (506), and the baffle (507) is inclined and has a slope that is the same as the inclination angle of the opening of the air intake port (501).

6. A food safety traceability label scanner according to claim 2, characterized in that: The power assembly (4) comprises a motor (401), a rotor (402), a processing chamber (403) and an exhaust pipe (404); the motor (401) is connected to the outer wall of the rear side of the housing (3); the processing chamber (403) is arranged inside the rear side of the housing (3); the rotor (402) is connected to the motor (401) via an eccentric shaft and is located in the processing chamber (403); the rotor (402) is in the shape of a Lenoir triangle; the processing chamber (403) is divided by the rotor (402) into an intake chamber (4031), a compression chamber (4032) and an exhaust chamber (4033); the intake chamber (4031) is connected to an intake pipe (503); the exhaust pipe (404) is arranged in the housing (3) and is connected to the exhaust chamber (4033); the other end of the exhaust pipe (404) is connected to an air outlet (7).

7. A food safety traceability label scanner according to claim 2, characterized in that: The defrosting assembly (6) comprises a scraper (601), a wind wheel (602), a transmission rod (603), a driven wheel (604), a convex plate 1 (605), a convex plate 2 (606) and a spring (607); the front end of the scraper (601) is hingedly connected to the outer shell (3); the convex plate 2 (606) is connected to the rear end of the scraper (601); the spring (607) is connected to the rear end of the scraper (601); the other end of the spring (607) is connected to the outer shell (3); the wind wheel (602) and the driven wheel (604) are both connected to the outer shell (3); the two ends of the transmission rod (603) are hingedly connected to the wind wheel (602) and the driven wheel (604) respectively; the wind wheel (602) is arranged in the air outlet (7); and the convex plate 1 (605) is connected to the driven wheel (604).

8. The food safety traceability label scanner according to claim 7, characterized in that: The wind wheel (602) is provided with a wind blade (6021), and the wind blade (6021) is provided with a plurality of through holes (6022).

9. The food safety traceability label scanner according to claim 7, characterized in that: The scraper (601) is arranged at an angle, and a microfiber coating is arranged on the bottom of the scraper (601).

10. The food safety traceability label scanner according to claim 6, characterized in that: The air outlet (7) is arranged at the rear side of the housing (3) and is connected to the exhaust pipe (404); the air outlet (7) opens forward and is arranged obliquely.

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