A courier scanning device

Abstract

This application relates to an express delivery scanning device, belonging to the field of logistics equipment. It includes a conveyor belt, a gantry, a scanning device, a fan, a non-rigid connection structure, and a flexible air inlet pipe. The gantry includes a square installation frame and four support legs respectively installed at the four top corners of the installation frame. The conveyor belt is located directly below the installation frame. The scanning device includes an installation bracket, a housing, a circuit board, a camera, and an annular fill light. An upper cover is fixed to the upper part of the housing. The upper and lower parts of the installation bracket are respectively fixedly connected to the middle part of the installation frame and the housing. The fill light is installed at the bottom of the housing, and the camera is installed at the center of the fill light. The fan is installed at a position of the installation frame close to the support leg through the non-rigid connection structure, and the air outlet end of the fan is communicated with the inner cavity of the housing through the air inlet pipe. An exhaust hole is provided on the upper cover or the bottom of the housing. This application has the effect of improving the scanning accuracy.

Description

Technical Field

[0001] The present application relates to the field of logistics equipment, and in particular to an express scanning device. Background Art

[0002] The loading and unloading operations of postal express require the assistance of express scanning equipment. The existing express scanning equipment includes a conveyor belt, a gantry and a scanning device. The conveyor belt passes through the gantry, and the scanning device is installed on the gantry. The scanning device is used to scan the barcode of the express on the conveyor belt. If an express that is not in the direction of this conveyor belt is found, the conveyor belt will be stopped immediately and an audible and visual alarm will be issued so that the material personnel can remove the express in time.

[0003] The existing scanning device includes a housing, a camera and a fill light. Under long-term or high-temperature conditions, the fill light generates severe heat, which affects the working stability of the fill light and thus affects the scanning accuracy of the camera. Summary of the invention

[0004] In order to improve scanning accuracy, the present application provides a courier scanning device.

[0005] The present application provides a courier scanning device, which adopts the following technical solution:

[0006] A courier scanning device comprises a conveyor belt, a gantry, a scanning device, a fan, a non-rigid connection structure and a flexible air inlet duct, wherein the gantry comprises a square mounting frame and four supporting legs respectively mounted at four top corners of the mounting frame, the conveyor belt is located directly below the mounting frame, the scanning device comprises a mounting bracket, a shell, a circuit board, a camera and a ring-shaped fill light, an upper cover is fixed to the upper part of the shell, the upper and lower parts of the mounting bracket are respectively fixedly connected to the middle part of the mounting frame and the shell, the fill light is mounted on the bottom of the shell, the camera is mounted at the center of the fill light, the fan is mounted on the mounting frame near the supporting legs through the non-rigid connection structure, the air outlet of the fan is connected to the inner cavity of the shell through the air inlet duct, and the upper cover or the bottom of the shell is provided with exhaust holes.

[0007] By adopting the above technical scheme, the cold air sucked by the fan enters the inner cavity of the shell through the air inlet pipe and is discharged from the exhaust hole. During this period, the cold air takes away the heat emitted by the fill light to cool the fill light. In addition, the fan is installed at a position of the installation frame close to the supporting legs. The fan is far away from the scanning device, and the operating vibration of the fan is difficult to be transmitted to the scanning device, thereby reducing the vibration of the scanning device and further improving the scanning accuracy. In addition, a non-rigid connection structure is provided to reduce the direct transmission of the fan vibration, thereby further reducing the vibration of the scanning device.

[0008] Optionally, the non-rigid connection structure includes a vertical pipe, a vertical rod and a spring. The upper end of the vertical pipe is fixed to the mounting frame, a flange is fixed at the lower port of the vertical pipe, the vertical rod passes through the vertical pipe, the lower end of the vertical rod is fixed to the fan, the upper end of the vertical rod is fixed with a rubber slider that fits against the inner wall of the vertical pipe, and the two ends of the spring respectively abut against the flange and the rubber slider.

[0009] By adopting the above technical solution, the spring will buffer the vibration transmitted from the fan to the vertical rod, and the rubber slider that reciprocates due to the vibration will rub against the inner wall of the vertical pipe, converting the vibration kinetic energy into frictional heat energy to play a shock-absorbing role, thereby reducing the vibration transmission of the fan to the scanning device.

[0010] Optionally, an air inlet and a filter screen are provided on the side wall of the mounting frame, and the air inlet end of the fan is communicated with the air inlet through a rubber cylinder.

[0011] By adopting the above technical solution, by providing a rubber cylinder and a filter screen, the air flow is guided and filtered to reduce the dust accumulation in the housing.

[0012] Optionally, a partition plate is provided at the bottom of the upper cover. The partition plate is conical, and the diameter of the outer peripheral surface of the partition plate gradually decreases from top to bottom. The circuit board is located between the partition plate and the upper cover; a spiral fin coaxial with the supplementary light is fixed at the bottom of the partition plate. The spiral fin divides the space between the partition plate and the supplementary light into a spiral air duct. The air inlet pipe is communicated with the outer air inlet end of the spiral air duct. The exhaust hole is provided at the bottom of the housing. The exhaust hole is communicated with the central air outlet end of the spiral air duct, and a plurality of exhaust holes are arranged in a circumferential arrangement around the camera.

[0013] By adopting the above technical solution, through the spiral air duct formed by the spiral fins, the cold air inhaled by the fan is guided to extend the contact time between the cold air and the supplementary light, thereby improving the heat dissipation effect.

[0014] Optionally, a guiding cylinder sleeving the camera is fixed at the bottom of the housing. The guiding cylinder is coaxial with the camera, and the lower end of the guiding cylinder is conical. A plurality of air guiding holes corresponding to the exhaust holes one by one penetrate through the guiding cylinder. The air guiding holes are communicated with the exhaust holes, and the path direction of the air guiding holes is the generatrix direction of the guiding cylinder. The air flows discharged from the air guiding holes converge directly below the lens of the camera.

[0015] By adopting the above technical solution, by providing a conical partition plate, the cross-section of the spiral air duct is gradually reduced. Therefore, the cold air is continuously accelerated during the spiral movement, not only taking away the heat of the supplementary light, but also finally shooting out from the exhaust holes and the air guide holes at high speed in sequence. The air flows discharged from the air guide holes converge directly below the lens of the camera to form an air curtain, blocking the intrusion of external dust, thereby reducing the dust accumulation on the camera lens and further improving the scanning accuracy.

[0016] Optionally, an upper partition plate and a lower partition plate are provided at the bottom of the upper cover. The upper partition plate and the lower partition plate are coaxially arranged. Both the upper partition plate and the lower partition plate are conical, and the outer peripheral diameters of the upper partition plate and the lower partition plate gradually decrease from top to bottom. The circuit board is located between the upper partition plate and the upper cover. There is a gap between the upper partition plate and the lower partition plate. A coaxially arranged spiral fin is fixed between the outer peripheral surface of the upper partition plate and the inner peripheral surface of the lower partition plate. The spiral fin divides the gap between the upper partition plate and the lower partition plate into a cyclone separation chamber; a spiral fin coaxial with the supplementary light is fixed at the bottom of the lower partition plate. The spiral fin divides the space between the lower partition plate and the supplementary light into a spiral air duct. The air inlet pipe is communicated with the outer air inlet end of the spiral air duct. The spiral fin is made by folding and bending a strip of copper foil in half. A spiral evaporation chamber is formed at the symmetrical part of the spiral fin. A first through hole is opened on the side wall of the spiral fin at the center of the spiral air duct. The spiral air duct is communicated with the central air inlet end of the spiral evaporation chamber through the first through hole. The inner wall of the spiral evaporation chamber is covered with a first water absorption cloth layer. The outer air outlet end of the spiral evaporation chamber is communicated with the outer air inlet end of the cyclone separation chamber. A vertical exhaust pipe is provided at the center of the upper cover. The lower end of the exhaust pipe is communicated with the central air outlet end of the cyclone separation chamber. The lower partition plate is penetrated with a densely arranged conical hole, and the conical hole is communicated with the spiral evaporation chamber; the outer peripheral surface of the lower partition plate is covered with a hollow glass microsphere coating.

[0017] By adopting the above technical solution, the cold air inhaled by the fan enters the spiral air duct through the air inlet pipe. The cold air moves spirally and towards the central air outlet end of the spiral air duct. During this process, the cold air not only takes away the heat of the supplementary light, but also continuously accelerates spirally. The high-speed air flow located at the center of the spiral air duct enters the central air inlet end of the spiral evaporation chamber through the first through hole. The first water absorption cloth layer stores water. During the process that the high-speed air flow moves in the spiral evaporation chamber and towards the outer air outlet end of the spiral evaporation chamber, the high-speed air flow will accelerate the kinetic energy of the water on the surface of the first water absorption cloth, so that the water evaporates. The evaporation of the water absorbs the heat of the heat dissipation fins, thereby cooling the heat dissipation fins and the air flow in the spiral air duct, and further improving the heat dissipation effect on the supplementary light. The air flow carrying water vapor enters the outer air inlet end of the cyclone separation chamber through the outer air inlet end of the spiral evaporation chamber. During the process that the air flow carrying water vapor moves in the cyclone separation chamber and towards the central air outlet end of the cyclone separation chamber, under the action of centrifugal force, the water vapor is blocked and viscous by the inner peripheral surface of the lower partition plate and condenses to form a liquid drop. The liquid drop falls into the spiral evaporation chamber through the conical hole under the action of gravity to supplement water for the first water absorption cloth layer, and the air flow is discharged from the housing through the exhaust pipe.

[0018] Moreover, the hollow glass microsphere coating has a good heat insulation effect, so that the heat in the spiral air duct is difficult to transfer to the lower partition plate, making the temperature of the lower partition plate itself lower than that of the spiral air duct, which is convenient for the formation of liquid of water vapor.

[0019] Optionally, the upper cover is provided with a plurality of densely arranged hollow holes in a penetrating manner.

[0020] By adopting the above technical solution, the upper partition plate and the lower partition plate are in contact with the external air to reduce the temperature of the upper partition plate and the lower partition plate, thereby improving the condensation effect of the cyclone separation chamber.

[0021] Optionally, the inner peripheral surface of the lower partition plate is covered with a glass wool layer, and the glass wool layer covers the hole wall of the conical hole.

[0022] By adopting the above technical solution, the glass wool layer has a capillary effect, which can improve the capture effect of the inner peripheral surface of the lower partition plate on the water vapor in the air flow. After the water adsorbed by the glass wool layer converges into a liquid drop with a larger mass, and under the action of gravity, the liquid drop is more likely to enter the spiral evaporation chamber through the conical hole to replenish water for the first water absorption cloth layer.

[0023] Optionally, the upper partition plate is provided with a water replenishing hole communicating with the cyclone separation chamber. The inner peripheral surface of the upper partition plate is covered with a second water absorption cloth layer, and the second water absorption cloth layer covers the orifice of the water replenishing hole.

[0024] By adopting the above technical solution, when there is a large amount of water loss in the spiral evaporation chamber, water can be added to the second water-absorbing cloth layer. After the second water-absorbing cloth layer absorbs water, under the action of gravity, the water enters the cyclone separation chamber and the spiral evaporation chamber in sequence through the water replenishing holes to replenish water for the first water-absorbing cloth layer; and the second water-absorbing cloth layer covers the orifice of the water replenishing hole to reduce the water vapor loss in the cyclone separation chamber; secondly, according to Bernoulli's principle, the fluid flow rate in the cyclone separation chamber is relatively fast, and the water replenishing hole has negative pressure to further guide the water in the second water-absorbing cloth layer to quickly enter the cyclone separation chamber, further improving the water replenishing efficiency.

[0025] Optionally, it further includes a display, a control host and an audible and visual alarm device.

[0026] In summary, the present application includes at least one of the following beneficial technical effects:

[0027] The cold air inhaled by the fan enters the inner cavity of the housing through the air inlet pipe and is discharged from the air exhaust hole. During this period, the cold air takes away the heat dissipated by the supplementary light, cooling the supplementary light; and the fan is installed at a position of the installation frame close to the support leg. The fan is far away from the scanning device, and the running vibration of the fan is difficult to be transmitted to the scanning device, thereby reducing the vibration of the scanning device and further improving the scanning accuracy; and by setting a non-rigid connection structure to reduce the direct transmission of the fan vibration, thereby further reducing the vibration of the scanning device.

[0028] By setting a conical partition plate, the cross-sectional area of the spiral air duct gradually decreases. Therefore, the cold air continuously accelerates during the spiral movement, not only taking away the heat of the supplementary light, but also finally shooting out from the air exhaust hole and the air guide hole at high speed. The air flows discharged from each air guide hole converge directly below the lens of the camera to form an air curtain to block the intrusion of external dust, thereby reducing the dust accumulation on the camera lens and further improving the scanning accuracy.

[0029] By setting a spiral air duct, a spiral evaporation chamber and a cyclone separation chamber, during the movement of the high-speed air flow in the spiral evaporation chamber and towards the air outlet end on the outside of the spiral evaporation chamber, the high-speed air flow will accelerate the kinetic energy of the water on the surface of the first water-absorbing cloth, enabling the water to evaporate. The evaporation of the water absorbs the heat of the heat dissipation fins, thereby cooling the heat dissipation fins and the air flow in the spiral air duct, further improving the heat dissipation effect on the supplementary light, and the air flow carrying water vapor undergoes water-liquid separation through the cyclone separation chamber, and the dripping liquid falls into the spiral evaporation chamber under the action of gravity to replenish water for the first water-absorbing cloth layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is the overall structural schematic diagram of Embodiment 1.

[0031] Figure 2 is the partial cross-sectional view of the installation frame of Embodiment 1.

[0032] Figure 3 It is a schematic diagram of the scanning device of Embodiment 1.

[0033] Figure 4 It is Figure 3 a sectional view taken along the A-A direction in

[0034] Figure 5 a sectional view of the scanning device of Embodiment 1.

[0035] Figure 6 It is Figure 5 a partial enlarged view at B in

[0036] Figure 7 a partial sectional view of Embodiment 1 for showing the connection mode between the fan and the mounting frame.

[0037] Figure 8 a sectional view of the scanning device of Embodiment 2.

[0038] Figure 9 It is Figure 8 a partial enlarged view at C in

[0039] Figure 10 a schematic diagram of Embodiment 3 for reflecting the relative positional relationship among the spiral fins, the upper partition plate and the lower partition plate.

[0040] Figure 11 a sectional view of the scanning device of Embodiment 3.

[0041] Figure 12 It is Figure 11 a partial enlarged view at D in

[0042] Figure 13 It is Figure 11 a partial enlarged view at E in

[0043] Figure 14 a partial sectional view of Embodiment 4 for reflecting the relative positional relationship among the spiral fins, the upper partition plate and the lower partition plate.

[0044] Figure 15 a partial sectional view of Embodiment 5 for reflecting the relative positional relationship among the spiral fins, the upper partition plate and the lower partition plate.

[0045] Explanation of reference numerals: 1, housing; 2, upper cover; 3, fan; 5, non-rigid connection structure; 10, gantry; 101, mounting frame; 1011, air inlet; 102, supporting leg; 11, fill light; 111, exhaust hole; 12, camera; 13, connecting hole; 131, transfer pipe; 14, sealing cylinder; 15, spiral fin; 150, spiral air duct; 151, first through hole; 152, spiral evaporation chamber; 153, waterproof breathable membrane; 154, first water-absorbing cloth layer; 16, partition plate; 17, guide cylinder; 171, air guide hole ; 181. upper partition; 1811. second water-absorbing cloth layer; 1812. water supply hole; 182. lower partition; 183. spiral blade; 184. cyclone separation chamber; 185. hollow glass bead coating; 186. exhaust pipe; 187. conical hole; 188. second through hole; 189. glass wool layer; 20. conveyor belt; 200. hollow hole; 21. mounting bracket; 22. air inlet pipe; 23. circuit board; 31. rubber cylinder; 32. filter screen; 51. vertical pipe; 52. vertical rod; 53. spring; 54. rubber slider; 55. flange. DETAILED DESCRIPTION

[0046] The following is combined with Figure 1 -Attached Figure 15 This application is described in further detail.

[0047] Embodiment 1, Embodiment 1 discloses a courier scanning device. Figure 1 and Figure 2 The express scanning equipment includes a conveyor belt 20, a gantry 10, a scanning device, a fan 3, a non-rigid connection structure 5, an air inlet pipe 22, a display, a control host and an audible and visual alarm device (not shown in the figure), wherein the display, the control host and the audible and visual alarm device are all installed on the gantry 10, and the scanning device is installed on the gantry 10. The conveyor belt 20 is located directly below the scanning device. The conveyor belt 20 is used to transport express delivery. The scanning device is used to scan the barcode of the express delivery on the conveyor belt 20. If an express delivery that is not in the direction of the conveyor belt 20 is found, the conveyor belt 20 is stopped immediately and an audible and visual alarm is issued so that the material personnel can remove the express delivery in time.

[0048] The gantry 10 includes a square installation frame 101 and four supporting legs 102 . The four supporting legs 102 are respectively installed at four corners of the installation frame 101 . The conveyor belt 20 is located directly below the installation frame 101 .

[0049] like Figure 2 , Figure 3As shown, the scanning device includes a mounting bracket 21, a housing 1, a circuit board 23, a camera 12, and an annular fill light 11. An upper cover 2 is fixed to the upper part of the housing 1. The mounting bracket 21 is in a "U" shape. The two ends of the mounting bracket 21 are respectively fixed to the opposite sides of the housing 1. The upper part of the mounting bracket 21 is fixedly connected to the middle part of the mounting frame 101.

[0050] As Figure 3 , Figure 4 , Figure 5 , Figure 6 shown ( Figure 4 In the figure, the arrow direction is the cold air spiral movement direction, Figure 6 In the figure, the arrow direction is the direction in which the cold air is discharged from the spiral air duct 150), a circular sealing cylinder 14 is provided inside the housing 1. The fill light 11 is installed at the bottom of the housing 1, and the camera 12 is installed at the center of the fill light 11; a partition plate 16 is provided at the bottom of the upper cover 2. The partition plate 16 is conical, and the outer peripheral diameter of the partition plate 16 gradually decreases from top to bottom. The outer edge of the partition plate 16 is fixedly connected to the inner wall of the sealing cylinder 14. The partition plate 16 divides the inner cavity of the housing 1 into an upper cavity and a lower cavity. The circuit board 23 is installed in the upper cavity, and the circuit board 23 is respectively connected to the camera 12 and the fill light 11 through wires (not shown in the figure).

[0051] A spiral fin 15 is provided in the lower cavity. The spiral fin 15 is made of copper. The spiral fin 15 is coaxial with the fill light 11. The lower side edge of the spiral fin 15 is attached to the bottom surface of the partition plate 16, and the lower side edge of the spiral fin 15 is attached to the upper surface of the fill light 11. The spiral fin 15 divides the space between the partition plate 16 and the fill light 11 into a spiral air duct 150. The air inlet end of the spiral air duct 150 is located on the outside, and the air outlet end of the spiral air duct 150 is located at the center. Specifically, in this embodiment, a plurality of exhaust holes 111 are opened at the center position of the bottom of the housing 1, and the exhaust holes 111 are communicated with the central air outlet end of the spiral air duct 150. Each exhaust hole 111 is arranged in a circumferential arrangement around the camera 12.

[0052] A connection hole 13 is provided on the outside of the housing 1 for connecting an external air inlet pipe 22. A transfer pipe 131 is fixed inside the housing 1. One end of the transfer pipe 131 is communicated with the connection hole 13, and the other end of the transfer pipe 131 passes through the sealing cylinder 14, and this end of the transfer tank is communicated with the outer air inlet end of the spiral air duct 150.

[0053] The air inlet pipe 22 can be made of rubber material. The cold air inhaled by the fan 3 sequentially passes through the flexible air inlet pipe 22, the connection hole 13, and the transfer pipe 131 and enters the outer air inlet end of the spiral air duct 150. The cold air moves in the spiral air duct 150 and towards the central air outlet end of the spiral air duct 150. The cold air moves in a spiral and accelerates, so as to quickly and stably take away the heat dissipated by the supplementary light 11, thereby dissipating heat from the supplementary light 11 to improve the working stability of the supplementary light 11. Finally, the air flow in the spiral air duct 150 is discharged downward from the air exhaust hole 111.

[0054] In order to reduce the influence of the operation vibration of the fan 3 on the scanning device, the installation method of the fan 3 is further optimized as follows. Figure 5 、 Figure 6 、 Figure 7 As shown in the figure, the fan 3 is located at a position close to the support leg 102 of the installation frame 101, and the fan 3 is installed in the installation frame 101 through the non-rigid connection structure 5. That is, the fan 3 is far away from the scanning device, and the operation vibration of the fan 3 is difficult to be transmitted to the scanning device, thereby reducing the vibration of the scanning device and further improving the scanning accuracy. Moreover, by setting the non-rigid connection structure 5, the direct transmission of the vibration of the fan 3 is reduced, thereby further reducing the vibration of the scanning device.

[0055] Specifically, the non-rigid connection structure 5 includes a vertical pipe 51, a vertical rod 52, and a spring 53. The upper end of the vertical pipe 51 is fixed to the installation frame 101. A ring-shaped flange 55 is fixed to the lower port of the vertical pipe 51. The vertical rod 52 passes through the vertical pipe 51. The lower end of the vertical rod 52 is fixed to the fan 3. A rubber slider 54 that fits the inner wall of the vertical pipe 51 is fixed to the upper end of the vertical rod 52. The spring 53 is sleeved outside the vertical rod 52, and both ends of the spring 53 are respectively abutted against the flange 55 and the rubber slider 54.

[0056] When the fan 3 operates and generates vibration, the spring 53 will buffer the vibration transmitted to the vertical rod 52 by the fan 3. Due to the vibration, the reciprocating movement of the rubber slider 54 will cause friction with the inner wall of the vertical pipe 51, converting the vibration kinetic energy into frictional heat energy to play a shock-absorbing role, thereby reducing the vibration transmission of the fan 3 to the scanning device.

[0057] Moreover, in order to ensure that the cold air inhaled by the fan 3 is relatively clean, the following settings can also be made. An air inlet 1011 is opened on the side wall of the installation frame 101. A filter net 32 is installed at the air inlet 1011. The air inlet end of the fan 3 is communicated with the air inlet 1011 through a rubber cylinder 31. The rubber cylinder 31 is used to guide the air flow, and the filter net 32 is used to filter the air flow to reduce the dust accumulation in the housing 1. At the same time, the rubber cylinder 31 is a flexible structure to reduce the vibration transmission of the fan 3.

[0058] Embodiment 2. The difference between Embodiment 2 and Embodiment 1 is that Figure 8 、 Figure 9As shown, a guiding cylinder 17 is fixed to the bottom of the housing 1. The guiding cylinder 17 is coaxially arranged with the camera 12. The guiding cylinder 17 is sleeved loosely outside the camera 12. The lower end of the guiding cylinder 17 is conical. A plurality of air guiding holes 171 corresponding to the exhaust holes 111 one by one penetrate through the guiding cylinder 17. The air guiding holes 171 communicate with the exhaust holes 111. The path direction of the air guiding holes 171 is the generatrix direction of the guiding cylinder 17, so that the lower end of the air guiding holes 171 is inclined, and the air flows discharged from the air guiding holes 171 converge directly below the lens of the camera 12.

[0059] By providing the conical partition plate 16, the cross-section of the spiral air duct 150 gradually decreases. Therefore, the cold air is continuously accelerated during the spiral movement, which not only takes away the heat of the supplementary light 11, but also the cold air finally shoots out from the exhaust holes 111 and the air guiding holes 171 at high speed. The high-speed air flows discharged from the air guiding holes 171 converge directly below the lens of the camera 12 to form an air curtain to block the intrusion of external dust, thereby reducing the dust accumulation on the lens of the camera 12 and further improving the scanning accuracy.

[0060] Embodiment 3. The difference between Embodiment 3 and Embodiment 1 is that, as Figure 10 、 Figure 11 shown, an upper partition plate 181 and a lower partition plate 182 are provided at the bottom of the upper cover 2. The upper partition plate 181 and the lower partition plate 182 are coaxially arranged. There is a vertical gap between the upper partition plate 181 and the lower partition plate 182. Both the upper partition plate 181 and the lower partition plate 182 are conical. The outer peripheral surface diameters of the upper partition plate 181 and the lower partition plate 182 gradually decrease from top to bottom. The outer edges of the upper partition plate 181 and the lower partition plate 182 are fixedly connected to the inner wall of the sealing cylinder 14. The upper partition plate 181 and the lower partition plate 182 divide the inner cavity of the housing 1 into an upper cavity, a middle cavity and a lower cavity.

[0061] The upper cover 2 is provided with a densely arranged plurality of hollow holes 200. The circuit board 23 is located in the upper cavity. The circuit board 23 is higher than the upper partition plate 181. And in order to better protect the circuit board 23, a waterproof and dustproof cover can be provided outside the circuit board 23 or it can be covered with a plastic film.

[0062] The outer peripheral surface of the lower partition plate 182 is covered with a hollow glass microsphere coating 185. The hollow glass microsphere coating 185 plays a heat insulation role, so that the heat in the spiral air duct 150 is difficult to transfer to the lower partition plate 182, making the temperature of the lower partition plate 182 itself lower than the temperature of the spiral air duct 150.

[0063] In this embodiment, the upper surface of the lower partition plate 182 has a rough surface.

[0064] As Figure 11 、 Figure 12 、 Figure 13 shown ( Figure 10The solid arrows therein indicate the moving direction of the air flow within the spiral air duct 150, and the dashed arrows indicate the moving direction of the air flow within the spiral evaporation chamber 152). In this embodiment, the spiral fin 15 is located in the lower chamber. The spiral fin 15 is made by folding a strip of copper foil in half and spirally bending it. The spiral fin 15 has a symmetrical gap, and this symmetrical gap forms the spiral evaporation chamber 152. The two ends of the spiral fin 15 are welded and sealed. The upper opening of the spiral fin 15 abuts against the lower surface of the lower partition plate 182, and the upper opening of the spiral fin 15 is welded and fixed to the lower surface of the lower partition plate 182. The lower surface of the spiral fin 15 fits against the upper surface of the supplementary light 11.

[0065] The inner wall of the spiral evaporation chamber 152 is covered with a first water-absorbing cloth layer 154. The first water-absorbing cloth layer 154 can be directly laid flat or bonded by dotting. The first water-absorbing cloth layer 154 adsorbs water. The air inlet end of the spiral evaporation chamber 152 is located at the center, and the air outlet end of the spiral evaporation chamber 152 is located on the outside. Specifically, a first through hole 151 is opened on the side wall of the spiral fin 15 located at the center of the spiral air duct 150, so that the air flow in the spiral air duct 150 can enter the spiral evaporation chamber 152 through this first through hole 151 and move spirally outward along the spiral evaporation chamber 152. A second through hole 188 is opened at the outer edge portion of the lower partition plate 182, and the second through hole 188 communicates with the outer air outlet end of the spiral evaporation chamber 152, so that the air flow in the spiral evaporation chamber 152 can enter the middle chamber.

[0066] A coaxially arranged spiral sheet 183 is fixed between the outer peripheral surface of the upper partition plate 181 and the inner peripheral surface of the lower partition plate 182. The spiral sheet 183 divides the middle chamber into a cyclone separation chamber 184. The air inlet end of the cyclone separation chamber 184 is located on its own outside, that is, the air flow in the spiral evaporation chamber 152 can enter the cyclone separation chamber 184 through the second through hole 188. The air outlet end of the cyclone separation chamber 184 is located at its own center. Specifically, an exhaust hole 111 is opened at the center position of the upper partition plate 181, and an exhaust pipe 186 is fixed to the exhaust hole 111. The exhaust pipe 186 passes upward through the upper cover 2, and the lower end of the exhaust pipe 186 communicates with the central air outlet end of the cyclone separation chamber 184.

[0067] The lower partition plate 182 is penetrated with densely arranged tapered holes 187. The diameter of the lower orifice of the tapered hole 187 is smaller than the diameter of the upper orifice of the tapered hole 187. The cyclone separation chamber 184 communicates with the spiral evaporation chamber 152 through the tapered holes 187.

[0068] The cold air inhaled by the blower 3 enters the spiral air duct 150 through the air inlet pipe. The cold air moves spirally and towards the central air outlet end of the spiral air duct 150. During this process, the cold air not only takes away the heat of the supplementary light 11, but also continuously accelerates spirally. The high-speed air flow at the center of the spiral air duct 150 enters the central air inlet end of the spiral evaporation chamber 152 through the first through hole 151. The first water-absorbing cloth layer 154 stores water. During the process that the high-speed air flow moves in the spiral evaporation chamber 152 and towards the outer air outlet end of the spiral evaporation chamber 152, the high-speed air flow will increase the kinetic energy of the water on the surface of the first water-absorbing cloth, so that the water evaporates. The evaporation of water absorbs the heat of the heat dissipation fins, thereby cooling the heat dissipation fins and the air flow in the spiral air duct 150, and further improving the heat dissipation effect on the supplementary light 11. The air flow carrying water vapor enters the outer air inlet end of the cyclone separation chamber 184 through the outer air inlet end of the spiral evaporation chamber 152. During the process that the air flow carrying water vapor moves in the cyclone separation chamber 184 and towards the central air outlet end of the cyclone separation chamber 184, under the action of centrifugal force, the water vapor is blocked and viscous by the inner peripheral surface of the lower partition plate 182, and condenses to form droplets. The droplets gather and fall through the conical hole 187 under the action of gravity to the spiral evaporation chamber 152 to supplement water for the first water-absorbing cloth layer 154, and the air flow is discharged from the housing 1 through the exhaust pipe 186.

[0069] Moreover, in order to reduce the situation that the water vapor in the spiral evaporation chamber 152 diffuses into the spiral air duct 150, a waterproof and breathable membrane 153 can also be covered at the first through hole 151. If the supplementary light 11 has strong self-sealing performance, the waterproof and breathable membrane 153 can be not added.

[0070] Example 4. The difference between Example 4 and Example 3 is that, as Figure 14 shown, the inner peripheral surface of the lower partition plate 182 is covered with a glass wool layer 189, and the glass wool layer 189 covers the hole wall of the conical hole 187.

[0071] The glass wool layer 189 has a capillary effect, which can improve the capture effect of the inner peripheral surface of the lower partition plate 182 on the water vapor in the air flow. After the water adsorbed by the glass wool layer 189 converges into droplets with larger mass, and under the action of gravity, the droplets are more likely to enter the spiral evaporation chamber 152 through the conical hole 187 to replenish water for the first water-absorbing cloth layer 154.

[0072] Example 5. The difference between Example 5 and Example 4 is that, as Figure 15 shown, the upper partition plate 181 is penetrated with a plurality of water replenishing holes 1812. The water replenishing holes 1812 are respectively communicated with the cyclone separation chamber 184 and the upper chamber. The inner peripheral surface of the upper partition plate 181 is covered with a second water-absorbing cloth layer 1811, and the second water-absorbing cloth layer 1811 covers the orifice of the water replenishing hole 1812.

[0073] When there is a large amount of water loss in the spiral evaporation chamber 152, water can be added to the second water-absorbing cloth layer 1811. After the second water-absorbing cloth layer 1811 absorbs water, under the action of gravity, the water enters the cyclone separation chamber 184 and the spiral evaporation chamber 152 in sequence through the water replenishing holes 1812 to replenish water to the first water-absorbing cloth layer 154; and since the second water-absorbing cloth layer 1811 covers the orifices of the water replenishing holes 1812, it will also reduce the water vapor loss in the cyclone separation chamber 184 to a certain extent.

[0074] Secondly, according to Bernoulli's principle, since the fluid flow rate in the cyclone separation chamber 184 is relatively fast, the water replenishing holes 1812 have negative pressure to further guide the water in the second water-absorbing cloth layer 1811 to quickly enter the cyclone separation chamber 184, further improving the water replenishing efficiency.

[0075] The above are all the preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. An express delivery scanning device, characterized in that: It includes a conveyor belt (20), a gantry (10), a scanning device, a blower (3), a non-rigid connection structure (5) and a flexible air inlet pipe (22). The gantry (10) includes a square mounting frame (101) and four support legs (102) respectively mounted at the four top corners of the mounting frame (101). The conveyor belt (20) is located directly below the mounting frame (101). The scanning device includes a mounting bracket (21), a housing (1), a circuit board (23), a camera (12) and an annular fill light (11). An upper cover (2) is fixed to the upper part of the housing (1). The upper and lower parts of the mounting bracket (21) are respectively fixedly connected to the middle of the mounting frame (101) and the housing (1). The fill light (11) is mounted at the bottom of the housing (1), and the camera (12) is mounted at the center of the fill light (11). The blower (3) is mounted on the mounting frame (101) near the support leg (102) through the non-rigid connection structure (5). The air outlet end of the blower (3) is communicated with the inner cavity of the housing (1) through the air inlet pipe (22). An exhaust hole (111) is provided at the bottom of the upper cover (2) or the bottom of the housing (1); an upper partition (181) and a lower partition (182) are provided at the bottom of the upper cover (2). The upper partition (181) and the lower partition (182) are coaxially arranged. Both the upper partition (181) and the lower partition (182) are conical, and the outer diameter of the outer peripheral surfaces of the upper partition (181) and the lower partition (182) gradually decreases from top to bottom. The circuit board (23) is located between the upper partition (181) and the upper cover (2). There is a gap between the upper partition (181) and the lower partition (182). A coaxially arranged spiral sheet (183) is fixed between the outer peripheral surface of the upper partition (181) and the inner peripheral surface of the lower partition (182). The spiral sheet (183) divides the gap between the upper partition (181) and the lower partition (182) into a cyclone separation chamber (184);A spiral fin (15) coaxial with the supplementary light (11) is fixed to the bottom of the lower partition plate (182). The spiral fin (15) divides the space between the lower partition plate (182) and the supplementary light (11) into a spiral air duct (150). The air inlet pipe (22) is communicated with the outer air inlet end of the spiral air duct (150). The spiral fin (15) is made by folding and bending a strip of copper foil. A spiral evaporation cavity (152) is formed at the symmetric part of the spiral fin (15). A first through hole (151) is formed in the side wall of the spiral fin (15) located at the center of the spiral air duct (150). The spiral air duct (150) is communicated with the central air inlet end of the spiral evaporation cavity (152) through the first through hole (151). The inner wall of the spiral evaporation cavity (152) is covered with a first water absorption cloth layer (154). The outer air outlet end of the spiral evaporation cavity (152) is communicated with the outer air inlet end of the cyclone separation cavity (184). A vertical exhaust pipe (186) is provided at the center of the upper cover (2). The lower end of the exhaust pipe (186) is communicated with the central air outlet end of the cyclone separation cavity (184). The lower partition plate (182) is provided with a densely arranged tapered hole (187) in a penetrating manner. The tapered hole (187) is communicated with the spiral evaporation cavity (152). The outer peripheral surface of the lower partition plate (182) is covered with a hollow glass microsphere coating (185).; 2. The express delivery scanning device according to claim 1, wherein: The non-rigid connection structure (5) includes a vertical pipe (51), a vertical rod (52) and a spring (53). The upper end of the vertical pipe (51) is fixed to the mounting frame (101). A flange (55) is fixed to the lower port of the vertical pipe (51). The vertical rod (52) passes through the vertical pipe (51). The lower end of the vertical rod (52) is fixed to the fan (3). A rubber slider (54) that fits against the inner wall of the vertical pipe (51) is fixed to the upper end of the vertical rod (52). The two ends of the spring (53) are respectively abutted against the flange (55) and the rubber slider (54).

3. The express delivery scanning device according to claim 1 or 2, characterized in that: An air inlet (1011) and a filter screen (32) are provided on the side wall of the mounting frame (101). The air inlet end of the fan (3) is communicated with the air inlet (1011) through a rubber cylinder (31).

4. The express delivery scanning device according to claim 1, characterized in that: The upper cover (2) is provided with a densely arranged through-hole (200).

5. The express delivery scanning device according to claim 1, wherein: The inner peripheral surface of the lower partition plate (182) is covered with a glass wool layer (189), and the glass wool layer (189) covers the hole wall of the conical hole (187).

6. The express delivery scanning device according to claim 4, wherein: The upper partition plate (181) is provided with a water replenishing hole (1812) communicating with the cyclone separation chamber (184). The inner peripheral surface of the upper partition plate (181) is covered with a second water absorption cloth layer (1811), and the second water absorption cloth layer (1811) covers the orifice of the water replenishing hole (1812).

7. The express delivery scanning device according to claim 1, wherein: It further includes a display, a control host and an audible and visual alarm device.

Images