Express scanning equipment

Abstract

The invention relates to express scanning equipment, and relates to the field of logistics equipment, the express scanning equipment comprises a conveying belt, a portal frame, a scanning device, a fan, a non-rigid connecting structure and a flexible air inlet pipe, the portal frame comprises a square mounting frame and four supporting legs mounted at the four top corners of the mounting frame correspondingly, and the conveying belt is located under the mounting frame; the scanning device comprises a mounting support, a shell, a circuit board, a camera and an annular light supplementing lamp, an upper cover is fixed to the upper portion of the shell, the upper portion and the lower portion of the mounting support are fixedly connected with the middle of the mounting frame and the shell respectively, the light supplementing lamp is mounted at the bottom of the shell, and the camera is mounted in the center of the light supplementing lamp; the draught fan is installed on the portion, close to the supporting legs, of the installation frame through the non-rigid connecting structure, the air outlet end of the draught fan is communicated with an inner cavity of the shell through an air inlet pipe, and an air exhaust hole is formed in the upper cover or the bottom of the shell. The method has the effect of improving the scanning precision.

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: 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.

[0006] 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.

[0007] Optionally, the non-rigid connection structure includes a vertical tube, a vertical rod and a spring, the upper end of the vertical tube is fixed to the mounting frame, a flange is fixed to the lower end of the vertical tube, the vertical rod passes through the vertical tube, the lower end of the vertical rod is fixed to the fan, and a rubber slider that fits the inner wall of the vertical tube is fixed to the upper end of the vertical rod, and both ends of the spring are respectively abutted against the flange and the rubber slider.

[0008] By adopting the above technical solution, the spring will buffer the vibration transmitted to the vertical rod by the fan, and the reciprocating rubber slider due to the vibration will rub against the inner wall of the vertical tube, 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.

[0009] Optionally, an air inlet and a filter are provided on a side wall of the installation frame, and the air inlet end of the fan is connected to the air inlet via a rubber tube.

[0010] By adopting the above technical solution, a rubber cylinder and a filter screen are provided to guide and filter the airflow, so as to reduce dust accumulation in the shell.

[0011] Optionally, a partition plate is provided at the bottom of the upper cover, and the partition plate is conical, and the diameter of the outer circumferential surface of the partition plate gradually decreases from top to bottom, and the circuit board is located between the partition plate and the upper cover; a spiral fin coaxially arranged with the fill light is fixed to the bottom of the partition plate, and the spiral fin divides the space between the partition plate and the fill light into a spiral air duct, the air inlet pipe is connected to the outer air inlet end of the spiral air duct, the exhaust hole is provided at the bottom of the shell, the exhaust hole is connected to the central air outlet end of the spiral air duct, and the exhaust holes are provided in plurality and are arranged around the circumference of the camera.

[0012] By adopting the above technical solution, the spiral air duct formed by the spiral fins is used to guide the cold air sucked in by the fan, thereby prolonging the contact time between the cold air and the fill light, thereby improving the heat dissipation effect.

[0013] Optionally, a guide tube mounted on the camera is fixed to the bottom of the shell, the guide tube is coaxially arranged with the camera, the lower end of the guide tube is conical, and a plurality of air guide holes corresponding to the exhaust holes are penetrated by the guide tube, the air guide holes are connected with the exhaust holes, the path direction of the air guide holes is the busbar direction of the guide tube, and the airflow discharged from each of the air guide holes converges directly below the lens of the camera.

[0014] By adopting the above technical solution and setting 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, which not only takes away the heat of the fill light, but also is finally ejected from the exhaust holes and the air guide holes at high speed in sequence. The airflows discharged from the air guide holes converge directly under the camera lens to form an air curtain to block the invasion of external dust, thereby reducing dust accumulation on the camera lens and further improving scanning accuracy.

[0015] Optionally, an upper partition and a lower partition are provided at the bottom of the upper cover, the upper partition and the lower partition are coaxially arranged, the upper partition and the lower partition are both conical, the outer peripheral surface diameters of the upper partition and the lower partition gradually decrease from top to bottom, the circuit board is located between the upper partition and the upper cover, there is a gap between the upper partition and the lower partition, a coaxially arranged spiral sheet is fixed between the outer peripheral surface of the upper partition and the inner peripheral surface of the lower partition, the spiral sheet divides the gap between the upper partition and the lower partition into a cyclone separation chamber; a spiral fin coaxially arranged with the fill light is fixed at the bottom of the lower partition, the spiral fin divides the space between the lower partition and the fill light into a spiral air duct, the air inlet pipe is connected to the outer side of the spiral air duct The spiral fins are made of a folded and bent strip of copper foil, a spiral evaporation chamber is formed symmetrically on the spiral fins, a first through hole is provided on the side wall of the spiral fins located at the center of the spiral air duct, the spiral air duct is connected 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-absorbing cloth layer, the outer air outlet end of the spiral evaporation chamber is connected 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 connected with the central air outlet end of the cyclone separation chamber, the lower partition is penetrated by densely arranged conical holes, the conical holes are connected with the spiral evaporation chamber; the outer peripheral surface of the lower partition is covered with a hollow glass bead coating.

[0016] By adopting the above technical solution, the cold air sucked by the fan enters the spiral air duct through the air inlet pipe, and the cold air moves in the spiral and moves toward the central air outlet end of the spiral air duct. In this process, the cold air not only takes away the heat of the fill light, but also continuously accelerates in the spiral. The high-speed airflow 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-absorbing cloth layer absorbs and stores water. During the high-speed airflow in the spiral evaporation chamber and moving toward the outer air outlet end of the spiral evaporation chamber, the high-speed airflow will accelerate the kinetic energy of the water on the surface of the first water-absorbing cloth to evaporate the water, and the evaporated water absorbs the heat dissipation fins. The heat of the plate is absorbed by the heat dissipation fins, thereby cooling the heat dissipation fins and the airflow in the spiral air duct, further improving the heat dissipation effect of the fill light, and the airflow 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 of the airflow carrying water vapor in the cyclone separation chamber and moving toward the central air outlet end of the cyclone separation chamber, the water vapor is blocked and stuck by the inner peripheral surface of the lower partition under the action of centrifugal force, and condenses to form droplets, which fall into the spiral evaporation chamber through the tapered holes under the action of gravity to replenish water for the first water absorption cloth layer, and the airflow is discharged from the shell through the exhaust pipe.

[0017] In addition, the hollow glass microsphere coating has a good heat insulation effect, which makes it difficult for the heat in the spiral air duct to be transferred to the lower partition, so that the temperature of the lower partition itself is lower than that of the spiral air duct, so as to facilitate the liquidification of water vapor.

[0018] Optionally, the upper cover is provided with densely distributed hollow holes.

[0019] By adopting the above technical solution, the upper baffle and the lower baffle are in contact with the external air to reduce the temperature of the upper baffle and the lower baffle, thereby improving the condensation effect of the cyclone separation chamber.

[0020] Optionally, the inner circumferential surface of the lower partition is covered with a glass wool layer, and the glass wool layer covers the hole wall of the tapered hole.

[0021] By adopting the above technical solution, the glass wool layer has a capillary effect, which can improve the effect of the inner surface of the lower partition plate in capturing water vapor in the airflow. After the water adsorbed by the glass wool layer gathers into droplets with larger mass, and under the action of gravity, the droplets can more easily pass through the conical holes into the spiral evaporation chamber to replenish the first water-absorbing cloth layer.

[0022] Optionally, the upper baffle plate is penetrated by a water replenishment hole connected to the cyclone separation chamber, the inner circumferential surface of the upper baffle plate is covered with a second water-absorbing cloth layer, and the second water-absorbing cloth layer covers the opening of the water replenishment hole.

[0023] By adopting the above technical solution, when the water loss in the spiral evaporation chamber is large, water can be added to the second water absorption cloth layer. After the second water absorption cloth layer absorbs water, under the action of gravity, the water enters the cyclone separation chamber and the spiral evaporation chamber in turn through the water replenishment hole to replenish the first water absorption cloth layer; and the second water absorption cloth layer covers the orifice of the water replenishment 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 replenishment hole has a negative pressure, so as to further guide the water in the second water absorption cloth layer to quickly enter the cyclone separation chamber, thereby further improving the water replenishment efficiency.

[0024] Optionally, it also includes a display, a control host and an audible and visual alarm device.

[0025] In summary, the present application includes at least one of the following beneficial technical effects: 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 improving the scanning accuracy. In addition, by setting a non-rigid connection structure, the direct transmission of the fan vibration is reduced, thereby further reducing the vibration of the scanning device. By setting 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 fill light, but also finally ejected at high speed from the exhaust hole and the air guide hole in sequence. The airflow discharged from each air guide hole converges just below the camera lens 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. By arranging the spiral air duct, the spiral evaporation chamber and the cyclone separation chamber, when the high-speed airflow moves in the spiral evaporation chamber and toward the air outlet end outside the spiral evaporation chamber, the high-speed airflow will accelerate the kinetic energy of the water on the surface of the first water-absorbing cloth to evaporate the water, and the evaporated water absorbs the heat of the heat dissipation fins, thereby cooling the heat dissipation fins and the airflow in the spiral air duct, further improving the heat dissipation effect of the fill light, and the airflow carrying water vapor passes through the cyclone separation chamber to separate water from liquid, and the droplets fall into the spiral evaporation chamber through the conical holes under the action of gravity to replenish water for the first water-absorbing cloth layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of Example 1.

[0027] Figure 2 It is a partial cross-sectional view of the mounting frame of Example 1.

[0028] Figure 3It is a schematic diagram of the scanning device of Example 1.

[0029] Figure 4 yes Figure 3 Cross-sectional view along the AA direction.

[0030] Figure 5 This is a cross-sectional view of the scanning device of Example 1.

[0031] Figure 6 yes Figure 5 A partial enlarged view of point B in the middle.

[0032] Figure 7 It is a partial cross-sectional view of Example 1 for demonstrating the connection method between the fan and the mounting frame.

[0033] Figure 8 It is a cross-sectional view of the scanning device of Example 2.

[0034] Fig. 9 yes Figure 8 A partial enlarged view of point C in the middle.

[0035] Fig.10 It is a schematic diagram of Example 3 for illustrating the relative position relationship among the spiral fins, the upper partition and the lower partition.

[0036] Fig.11 This is a cross-sectional view of the scanning device of Example 3.

[0037] Fig.12 yes Fig.11 A partial enlarged view of point D in the middle.

[0038] Fig.13 yes Fig.11 A partial enlarged view of point E in the middle.

[0039] Fig.14 It is a partial cross-sectional view of Example 4, which is used to reflect the relative positional relationship between the spiral fins, the upper partition and the lower partition.

[0040] Fig.15 It is a partial cross-sectional view of Example 5, which is used to reflect the relative position relationship between the spiral fins, the upper partition and the lower partition.

[0041] 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

[0042] The following is combined with Figure 1 -Attached Fig.15 This application is described in further detail.

[0043] 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.

[0044] 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 .

[0045] 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, and 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.

[0046] As Figure 3 , Figure 4 , Figure 5 , Figure 6 shown ( Figure 4 the arrow direction in [reference numeral] is the cold air spiral movement direction, Figure 6 and the arrow direction in [reference numeral] 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 diameter of the outer peripheral surface 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 electric wires (not shown in the figure).

[0047] 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 formed 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 distribution around the camera 12.

[0048] A connection hole 13 is provided on the outside of the housing 1. The connection hole 13 is used 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.

[0049] The air inlet pipe 22 can be made of rubber material. The cold air sucked in by the fan 3 enters the outer air inlet end of the spiral air duct 150 through the flexible air inlet pipe 22, the connecting hole 13, and the transfer pipe 131 in sequence. The cold air moves in the spiral air duct 150 and toward the central air outlet end of the spiral air duct 150. The cold air spiral accelerates to quickly and stably take away the heat emitted by the fill light 11, thereby dissipating the heat of the fill light 11 to improve the working stability of the fill light 11. Finally, the airflow in the spiral air duct 150 is discharged downward from the exhaust hole 111.

[0050] In order to reduce the impact of the running vibration of the fan 3 on the scanning device, the installation method of the fan 3 is also optimized as follows: Figure 5 , Figure 6 , Figure 7 As shown, the fan 3 is located at a position of the installation frame 101 close to the support leg 102, and the fan 3 is installed in the installation frame 101 through a 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. In addition, 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.

[0051] Specifically, the non-rigid connection structure 5 includes a vertical tube 51, a vertical rod 52 and a spring 53. The upper end of the vertical tube 51 is fixed to the mounting frame 101, and an annular flange 55 is fixed to the lower end of the vertical tube 51. The vertical rod 52 passes through the vertical tube 51, and the lower end of the vertical rod 52 is fixed to the fan 3. The upper end of the vertical rod 52 is fixed to a rubber slider 54 that fits the inner wall of the vertical tube 51. The spring 53 is sleeved on the outer side of the vertical rod 52, and the two ends of the spring 53 are respectively abutted against the flange 55 and the rubber slider 54.

[0052] When the fan 3 generates vibration during operation, the spring 53 will cushion the vibration transmitted to the vertical rod 52 by the fan 3, and the rubber slider 54 that moves back and forth due to the vibration will rub against the inner wall of the vertical tube 51, converting the vibration kinetic energy into frictional heat energy to achieve shock absorption, thereby reducing the vibration transmission from the fan 3 to the scanning device.

[0053] Furthermore, in order to ensure that the cold air sucked in 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, and a filter screen 32 is installed on the air inlet 1011. The air inlet end of the fan 3 is connected to the air inlet 1011 through a rubber tube 31. The rubber tube 31 is used to guide the airflow, and the filter screen 32 is used to filter the airflow to reduce dust accumulation in the shell 1. At the same time, the rubber tube 31 is a flexible structure to reduce the vibration transmission of the fan 3.

[0054] Embodiment 2, embodiment 2 is different from embodiment 1 in that, Figure 8 , Fig. 9As shown, a guide cylinder 17 is fixed to the bottom of the shell 1, and the guide cylinder 17 is coaxially arranged with the camera 12. The guide cylinder 17 is hollowly sleeved on the outside of the camera 12, and the lower end of the guide cylinder 17 is conical. The guide cylinder 17 is penetrated by a plurality of air guide holes 171 corresponding to the exhaust holes 111 one by one. The air guide holes 171 are connected with the exhaust holes 111, and the path direction of the air guide holes 171 is the generatrix direction of the guide cylinder 17, so that the lower end of the air guide holes 171 is inclined, so that the airflow discharged from each air guide hole 171 converges directly below the lens of the camera 12.

[0055] By setting a conical partition plate 16, the cross-section of the spiral air duct 150 is gradually reduced. Therefore, the cold air is continuously accelerated during the spiral movement, not only taking away the heat of the fill light 11, but also finally ejected at high speed from the exhaust hole 111 and the air guide hole 171 in sequence. The high-speed airflows discharged from the air guide holes 171 converge directly under the lens of the camera 12 to form an air curtain to block the invasion of external dust, thereby reducing the dust accumulation on the lens of the camera 12 and further improving the scanning accuracy.

[0056] Embodiment 3, embodiment 3 is different from embodiment 1 in that, Fig.10 , Fig.11 As shown, an upper partition 181 and a lower partition 182 are provided at the bottom of the upper cover 2, and the upper partition 181 and the lower partition 182 are coaxially arranged, and there is a vertical gap between the upper partition 181 and the lower partition 182, and the upper partition 181 and the lower partition 182 are both conical, and the outer peripheral surface diameters of the upper partition 181 and the lower partition 182 gradually decrease from top to bottom, and the outer edges of the upper partition 181 and the lower partition 182 are fixedly connected to the inner wall of the sealing tube 14, and the upper partition 181 and the lower partition 182 divide the inner cavity of the shell 1 into an upper cavity, a middle cavity and a lower cavity.

[0057] The upper cover 2 is penetrated by hollow holes 200 that are densely arranged. The circuit board 23 is located in the upper cavity. The circuit board 23 is higher than the upper partition 181. In order to better protect the circuit board 23, a waterproof and dustproof cover can be provided on the outside of the circuit board 23 or it can be covered with a plastic film.

[0058] The outer peripheral surface of the lower partition 182 is covered with a hollow glass bead coating 185 , which acts as a heat-insulating coating, thereby making it difficult for the heat in the spiral air duct 150 to be transferred to the lower partition 182 , so that the temperature of the lower partition 182 itself is lower than that of the spiral air duct 150 .

[0059] In this embodiment, the upper surface of the lower partition 182 has a rough surface.

[0060] like Fig.11 , Fig.12 , Fig.13 As shown ( Fig.10The solid arrow in the figure indicates the moving direction of the airflow in the spiral air duct 150, and the dotted arrow indicates the moving direction of the airflow in the spiral evaporation chamber 152). In this embodiment, the spiral fin 15 is located in the lower chamber. The spiral fin 15 is made of a strip of copper foil folded in half and spirally bent. The spiral fin 15 has a symmetrical gap, which forms a spiral evaporation chamber 152. Both ends of the spiral fin 15 are welded and closed. The upper opening of the spiral fin 15 abuts against the lower surface of the lower partition 182, and the upper opening of the spiral fin 15 is welded and fixed to the lower surface of the lower partition 182, and the lower surface of the spiral fin 15 is attached to the upper surface of the fill light 11.

[0061] The inner wall of the spiral evaporation chamber 152 is covered with a first water-absorbing cloth layer 154, which can be directly laid or glued, and the first water-absorbing cloth layer 154 absorbs 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 provided on the side wall of the spiral fin 15 located at the center of the spiral air duct 150, so that the airflow in the spiral air duct 150 can enter the spiral evaporation chamber 152 through the first through hole 151 and move outward in a spiral along the spiral evaporation chamber 152. A second through hole 188 is provided on the outer edge of the lower partition 182, and the second through hole 188 is connected to the outer air outlet end of the spiral evaporation chamber 152, so that the airflow in the spiral evaporation chamber 152 can enter the middle cavity.

[0062] A coaxially arranged spiral sheet 183 is fixed between the outer circumference of the upper partition 181 and the inner circumference of the lower partition 182, and the spiral sheet 183 divides the middle cavity into a cyclone separation chamber 184. The air inlet end of the cyclone separation chamber 184 is located on its outside, that is, the airflow in the spiral evaporation chamber 152 can enter the cyclone separation chamber 184 through the second through hole 188, and the air outlet end of the cyclone separation chamber 184 is located at its center. Specifically, the exhaust hole 111 is opened at the center position of the upper partition 181, and the exhaust hole 111 is fixed with an exhaust pipe 186. The exhaust pipe 186 passes through the upper cover 2 upward, and the lower end of the exhaust pipe 186 is connected to the central air outlet end of the cyclone separation chamber 184.

[0063] The lower partition plate 182 is penetrated by densely arranged conical holes 187 , the lower opening diameter of the conical holes 187 is smaller than the upper opening diameter of the conical holes 187 , and the cyclone separation chamber 184 is connected with the spiral evaporation chamber 152 through the conical holes 187 .

[0064] The cold air sucked by the fan 3 enters the spiral air duct 150 through the air inlet pipe, and the cold air moves in a spiral and moves toward the central air outlet end of the spiral air duct 150. In this process, the cold air not only takes away the heat of the fill light 11, but also continues to accelerate in the spiral. The high-speed airflow located 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 absorbs and stores water. During the high-speed airflow in the spiral evaporation chamber 152 and moving toward the outer air outlet end of the spiral evaporation chamber 152, the high-speed airflow will increase the kinetic energy of the water on the surface of the first water-absorbing cloth to evaporate the water. The evaporated water absorbs the heat of the heat dissipation fins, thereby heat dissipation. The fins cool the air flow in the spiral air duct 150, further improving the heat dissipation effect of the fill light 11, and 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 movement of the air flow carrying water vapor in the cyclone separation chamber 184 and toward the central air outlet end of the cyclone separation chamber 184, under the action of centrifugal force, the water vapor is blocked by the inner peripheral surface of the lower partition 182 and condensed to form droplets. The droplets gather and fall into the spiral evaporation chamber 152 through the conical hole 187 under the action of gravity to replenish water for the first water-absorbing cloth layer 154, and the air flow is discharged from the shell 1 through the exhaust pipe 186.

[0065] Furthermore, in order to reduce the diffusion of water vapor in the spiral evaporation chamber 152 into the spiral air duct 150 , the first through hole 151 may be covered with a waterproof breathable membrane 153 . If the fill light 11 itself has strong sealing properties, there is no need to add a waterproof breathable membrane 153 .

[0066] Embodiment 4, embodiment 4 is different from embodiment 3 in that, Fig.14 As shown, the inner circumference of the lower partition 182 is covered with a glass wool layer 189 , and the glass wool layer 189 covers the hole wall of the tapered hole 187 .

[0067] The glass wool layer 189 has a capillary effect, which can improve the effect of the inner surface of the lower partition 182 in capturing water vapor in the airflow. After the water adsorbed by the glass wool layer 189 gathers into droplets with larger mass, and under the action of gravity, the droplets can more easily pass through the conical holes 187 into the spiral evaporation chamber 152 to replenish the first water-absorbing cloth layer 154.

[0068] Embodiment 5, embodiment 5 is different from embodiment 4 in that, Fig.15 As shown, the upper partition 181 is penetrated by multiple water replenishment holes 1812, which are respectively connected to the cyclone separation chamber 184 and the upper chamber. The inner circumferential surface of the upper partition 181 is covered with a second water absorbent cloth layer 1811, and the second water absorbent cloth layer 1811 covers the openings of the water replenishment holes 1812.

[0069] When the water loss in the spiral evaporation chamber 152 is large, water can be added to the second water absorption cloth layer 1811. After the second water absorption 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 turn through the water replenishment hole 1812 to replenish the first water absorption cloth layer 154. And because the second water absorption cloth layer 1811 covers the opening of the water replenishment hole 1812, the water vapor loss in the cyclone separation chamber 184 will also be reduced to a certain extent.

[0070] Secondly, according to Bernoulli's principle, since the fluid flow rate in the cyclone separation chamber 184 is relatively fast, the water replenishment hole 1812 has a negative pressure, which further guides the water in the second water-absorbing fabric layer 1811 to quickly enter the cyclone separation chamber 184, further improving the water replenishment efficiency.

[0071] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A courier scanning device, characterized in that: The invention comprises a conveyor belt (20), a gantry (10), a scanning device, a fan (3), a non-rigid connection structure (5) and a flexible air inlet pipe (22); the gantry (10) comprises a square mounting frame (101) and four supporting legs (102) respectively mounted at four corners of the mounting frame (101); the conveyor belt (20) is located directly below the mounting frame (101); the scanning device comprises a mounting bracket (21), a housing (1), a circuit board (23), a camera (12) and a ring-shaped 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 fixedly connected to the middle part of the mounting frame (101) and the shell (1), respectively; the fill light (11) is mounted on the bottom of the shell (1); the camera (12) is mounted at the center of the fill light (11); the fan (3) is mounted on a portion of the mounting frame (101) close to the supporting leg (102) through the non-rigid connection structure (5); the air outlet end of the fan (3) is connected to the inner cavity of the shell (1) through an air inlet pipe (22); and an exhaust hole (111) is provided at the bottom of the upper cover (2) or the shell (1).

2. The express scanning device according to claim 1, characterized in that: The non-rigid connection structure (5) comprises a vertical tube (51), a vertical rod (52) and a spring (53); the upper end of the vertical tube (51) is fixed to the installation frame (101); a flange (55) is fixed to the lower end of the vertical tube (51); the vertical rod (52) passes through the vertical tube (51); the lower end of the vertical rod (52) is fixed to the fan (3); a rubber slider (54) is fixed to the upper end of the vertical rod (52) and is in contact with the inner wall of the vertical tube (51); and the two ends of the spring (53) are respectively in contact with the flange (55) and the rubber slider (54).

3. The express scanning device according to claim 1 or 2, characterized in that: An air inlet (1011) and a filter (32) are provided on the side wall of the installation frame (101), and the air inlet end of the fan (3) is connected to the air inlet (1011) via a rubber tube (31).

4. The express scanning device according to claim 1, characterized in that: A partition plate (16) is provided at the bottom of the upper cover (2), the partition plate (16) is conical, and the outer diameter of the partition plate (16) gradually decreases from top to bottom. The circuit board (23) is located between the partition plate (16) and the upper cover (2); a spiral fin (15) coaxially arranged with the fill light (11) is fixed at the bottom of the partition plate (16), and 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 pipe (22) is connected to the outer air inlet end of the spiral air duct (150); the exhaust hole (111) is provided at the bottom of the shell (1), and the exhaust hole (111) is connected to the central air outlet end of the spiral air duct (150), and the exhaust hole (111) is provided in plurality and is arranged around the circumference of the camera (12).

5. The express scanning device according to claim 4, characterized in that: A guide tube (17) sleeved on the camera (12) is fixed at the bottom of the housing (1). The guide tube (17) is coaxially arranged with the camera (12). The lower end of the guide tube (17) is conical. The guide tube (17) is penetrated by a plurality of air guide holes (171) corresponding to the exhaust holes (111) one by one. The air guide holes (171) are connected to the exhaust holes (111). The path direction of the air guide holes (171) is the generatrix direction of the guide tube (17). The airflow discharged from each of the air guide holes (171) converges directly below the lens of the camera (12).

6. The express scanning device according to claim 1, characterized in that: 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. The upper partition (181) and the lower partition (182) are both conical. The diameters of the outer peripheral surfaces of the upper partition (181) and the lower partition (182) gradually decrease 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). The outer peripheral surface of the upper partition (181) is A coaxially arranged spiral sheet (183) is fixed between the upper and lower baffles (181) and the inner circumference of the lower baffle (182), and the spiral sheet (183) divides the gap between the upper baffle (181) and the lower baffle (182) into a cyclone separation chamber (184); a spiral fin (15) coaxially arranged with the fill light (11) is fixed at the bottom of the lower baffle (182), and the spiral fin (15) divides the space between the lower baffle (182) and the fill light (11) into a spiral air duct (150); the air inlet pipe (22) and the fill light (11) are connected to each other. The spiral fin (15) is made of a strip of copper foil folded in half, and a spiral evaporation chamber (152) is formed symmetrically on the spiral fin (15). A first through hole (151) is provided on the side wall of the spiral fin (15) located at the center of the spiral duct (150). The spiral duct (150) is connected to the central air inlet end of the spiral evaporation chamber (152) through the first through hole (151). The inner wall of the spiral evaporation chamber (152) is covered with a first water-absorbing cloth layer (154). The outer air outlet end of the evaporation chamber (152) is connected to the outer air inlet end of the cyclone separation chamber (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 connected to the central air outlet end of the cyclone separation chamber (184); the lower partition plate (182) is penetrated by densely arranged conical holes (187); the conical holes (187) are connected to the spiral evaporation chamber (152); and the outer peripheral surface of the lower partition plate (182) is covered with a hollow glass bead coating (185).

7. The express scanning device according to claim 6, characterized in that: The upper cover (2) is provided with densely distributed hollow holes (200) running through it.

8. The express scanning device according to claim 6, characterized in that: The inner circumferential surface of the lower partition (182) is covered with a glass wool layer (189), and the glass wool layer (189) covers the hole wall of the tapered hole (187).

9. The express scanning device according to claim 7, characterized in that: The upper baffle plate (181) is penetrated by a water replenishment hole (1812) connected to the cyclone separation chamber (184); the inner circumferential surface of the upper baffle plate (181) is covered with a second water-absorbing cloth layer (1811), and the second water-absorbing cloth layer (1811) covers the opening of the water replenishment hole (1812).

10. The express scanning device according to claim 1, characterized in that: It also includes a display, a control host and an audible and visual alarm device.

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