A contactless material delivery device

Abstract

The present invention belongs to the technical field of material transportation, and specifically discloses a contactless material distribution device, which includes a transportation channel. At the inner bottom of the transportation channel, there are two parallel tracks, and a movable storage trolley is slidably fitted on the tracks; at the inner top of the transportation channel, multiple ultraviolet lamps are fixed; at the outer top of the transportation channel, an air inlet pipeline is installed, and a rain-proof cap is fixed above the top of the air inlet pipeline. An air filter and a first electric valve are fixed on the air inlet pipeline; at the outer top of the transportation channel and at a corresponding position close to the isolation area, an exhaust pipeline is installed, and a fan and a second electric valve are connected to the exhaust pipeline. While ensuring the normal transportation of materials, the present invention ventilates the inside of the transportation channel to prevent aerosol and virus-carrying air in the isolation area from entering the clean area through the transportation channel, causing infection to the staff in the clean area.

Description

Technical Field

[0001] The present invention relates to the field of material transportation technology, and specifically to a contactless material distribution device for places such as isolation wards or isolation rooms in square cabin hospitals or non-square cabin hospitals. Background Art

[0002] For Fangcang hospitals or non-Fangcang hospitals, since the wards, treatment rooms, warehouses, isolation wards or isolation wards in the isolation area need to be completely isolated from the outside, entry and exit must strictly follow the procedures for disinfection, putting on and taking off protective clothing, etc. If medical staff are required to enter and exit to transport supplies, it will greatly consume the medical staff's energy, and repeatedly putting on and taking off protective clothing also increases the risk of infection for medical staff; and if conventional cargo robots are used for transportation, they are also easily affected by normally closed doors, thresholds, etc. and cannot be used normally.

[0003] CN2022109847840 discloses a material transport device for square cabin hospitals, which integrates a transport mechanism into the interior of a central isolation cabinet for isolating beds, and moves a storage box with a top-mounted hoisting rack along the top hanging rail in the central isolation cabinet, and then accurately locates the material placement position inside the storage box by infrared positioning. This method can accurately locate the material placement position without occupying external space, but the materials are only transported inside the square cabin hospital cabin, and when taking and placing materials, there is cross infection between the isolation cabinet and the ward, and between the isolation cabinet and the outside world. In addition, the use of a hoisting method to transport materials poses a safety hazard when large items need to be transported. Summary of the Invention

[0004] In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide a contactless material delivery device with a reasonable structural design and no infection risk.

[0005] To achieve the above object, the technical solution adopted by the present invention is:

[0006] A contactless material distribution device includes a conveying channel, characterized in that one end of the conveying channel is located in a clean area and the other end is located in an isolation area, doors with electromagnetic locks are installed at both ends of the conveying channel and are respectively called the clean area outer door and the isolation area inner door, and the contact parts between the clean area outer door and the conveying channel, as well as the contact parts between the isolation area inner door and the conveying channel are all provided with sealing strips; two parallel tracks are provided at the bottom of the conveying channel, and a mobile storage trolley is slidably fitted on the tracks, and the mobile storage trolley is driven by a driving mechanism to slide back and forth on the tracks; in the conveying channel Multiple ultraviolet lamps are fixed on the top; an air inlet duct is installed at a suitable position on the top outside the conveying channel and close to the clean area, the bottom of the air inlet duct is connected with the conveying channel, a rain cap is fixed on the top, and a distance is left between the rain cap and the top opening of the air inlet duct, an air filter and a first electric valve are fixed on the air inlet duct, and the first electric valve is located below the air filter; an exhaust duct is installed at a suitable position on the top outside the conveying channel and close to the isolation area, a fan and a second electric valve are connected to the exhaust duct, and the second electric valve is located above the fan.

[0007] Preferably, the mobile storage trolley has four rectangularly arranged shock-absorbing pulleys fixed to its bottom. A tray is fixed to its top, and its surface is frosted to prevent slipping when transporting items. A slot is provided at the top of the tray, near each of the four corners, into which a storage box or a barrier rod can be inserted. The barrier rod can be vertical or curved. The storage box is used to transport small items, while the barrier rod can be inserted after the storage box is removed to transport large items.

[0008] Preferably, the driving mechanism includes two parallel chains, sprockets, a gear transmission, and a driving motor; the two sides of the mobile storage cart are respectively fixed on a chain, each chain is wound around its own driving sprocket and driven sprocket to form a ring-shaped chain, and the two driving sprockets are ultimately driven by the same driving motor or by their own driving motors; the driving motor is a brake motor.

[0009] Preferably, a disinfectant spray line is fixed to the inner wall of the delivery channel, located between the air inlet line and the ultraviolet lamp. The disinfectant spray line is distributed on the top, left, and right sides of the inner wall of the delivery channel. Multiple nozzles are fixed to the disinfectant spray line, which are connected to the disinfectant spray line. The disinfectant spray line is ultimately connected to a disinfectant container located outside the delivery channel. A booster pump and a third electric valve are installed on the line connecting the disinfectant spray line and the disinfectant container. The disinfectant container contains a conventional disinfectant such as 75% alcohol or 84 disinfectant, and a liquid level sensor is provided in the disinfectant container to monitor the disinfectant level in the disinfectant container.

[0010] Preferably, multiple position detection switches are installed in the conveying channel, specifically, a position detection switch is provided at each end position near the track, a position detection switch is provided at a corresponding position near the disinfection spray pipeline, and a position detection switch is provided at a corresponding position below the ultraviolet lamp.

[0011] Preferably, lighting is installed at the top of the conveying channel and at appropriate positions near the clean area outer door and the isolation area inner door. The lighting is lit when the door is opened and turned off when the door is closed, making it convenient to place and take the materials to be transported.

[0012] Preferably, the above-mentioned contactless material distribution device also includes a clean area outer door main board and an isolation area inner door main board, wherein the clean area outer door main board is fixed on the clean area outer door, and a display screen I, a first keypad, and an intercom are also fixed on the outside of the clean area outer door, and the clean area outer door main board is respectively electrically connected to the display screen I, the intercom, the electronic door lock on the clean area outer door, the first keypad, the ultraviolet lamp, the drive motor, the position detection switch, the lighting lamp near the clean area outer door, the first electric valve, the third electric valve, the liquid level sensor, and the booster pump; the isolation area inner door main board is fixed on the isolation area inner door, and a display screen II, a second keypad, and an intercom are also fixed on the outside of the isolation area inner door, and the isolation area inner door main board is respectively electrically connected to the display screen II, the corresponding intercom, the lighting lamp near the isolation area inner door, the second electric valve, the second keypad, the fan, and the electronic door lock on the isolation area inner door; the clean area outer door main board and the isolation area inner door main board are connected via a communication signal line.

[0013] Preferably, mechanical anti-collision assemblies are installed within the conveying channel and at both ends of the track. These assemblies include upright posts, buffer springs, and rubber baffles. A vertical upright post is fixedly attached to the top of each end of each track, a buffer spring is fixedly attached to the inner side of each upright post, and a rubber baffle is fixedly attached to the other end of each buffer spring. The mechanical anti-collision assemblies prevent the mobile storage trolley from derailing or damaging the isolation zone inner door or clean zone outer door if the detection switch fails.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. By installing sealing doors on both sides of the conveying channel and setting up air inlet and exhaust ducts in the conveying channel, while ensuring the normal transportation of materials, the conveying channel is ventilated so that the conveying channel is filled with clean air, preventing aerosols and virus-carrying air in the isolation area from entering the clean area through the conveying channel and causing infection to the clean area staff;

[0016] 2. Through the installation of ultraviolet lamps, disinfectant spray pipelines, etc., the materials entering the conveying channel and the mobile storage carts, tracks and other devices in the conveying channel can be sterilized and disinfected;

[0017] 3. Through the arrangement of tracks, mobile storage trolleys, drive mechanisms, etc., the mobile storage trolleys with materials can be transported relatively smoothly without any safety hazards;

[0018] 4. Through the settings of multiple position detection switches, it is possible to well grasp several key positions of the mobile storage trolley in the conveying channel, and control the mobile storage trolley to pause at these key positions and start the ultraviolet lamp, fan, disinfectant spraying and other devices in time through position detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the external three-dimensional structure of the overall structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the back structure of the clean area outer door of the present invention;

[0021] Figure 3 This is a front view of the structure in the delivery channel of the present invention;

[0022] Figure 4 Schematic diagram of the positional connection relationship between the mobile storage trolley and the driving mechanism of the present invention;

[0023] Figure 5 This is a control principle diagram of the present invention;

[0024] Figure 6 A schematic diagram of a specific area where the position detection switch of the present invention is set;

[0025] Among them, 1. Conveying channel, 2. Clean area outer door, 3. Isolation area inner door, 4. Track, 5. Mobile storage trolley, 6. Shock-absorbing pulley, 7. Pallet, 7.1. Jack, 8. Storage box, 9. Chain, 10. Drive motor, 11. Air inlet pipe, 12. Air filter, 13. First electric valve, 14. Rainproof cap, 15. Exhaust pipe, 16. Fan, 17. Second electric valve, 18. Lighting, 19. Ultraviolet lamp, 20. Display screen, 21. Keypad, 22. Intercom, 23. Position detection switch, 24. Disinfection spray pipe, 25. Nozzle, 26. Disinfectant container, 27. Booster pump, 28. Third electric valve, 29. Sensor, 30. Column, 31. Buffer spring, 32. Rubber baffle. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings 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 in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0027] In this document, terms related to connection relationships, such as "fixed connection" and "connection" are all carried out in a conventional manner, such as bolt connection, welding or circuit connection.

[0028] like Figure 1-6 As shown, the contactless material distribution device of the present invention includes a conveying channel 1, which has a square, circular, or other cross-sectional shape. This conveying channel 1 is installed in a buffer corridor or somewhere on the exterior wall of a makeshift or non-makeshift hospital (preferably near the exterior wall of a warehouse or nurse station within an isolation area), with the outer end of the conveying channel 1 located in a ventilated clean area and the inner end located within the isolation area. The conveying channel 1 is made of metal or other materials and has good sealing properties. A shell is fixed to the outer wall of the conveying channel 1, leaving a gap between the shell and the outer wall of the conveying channel 1. This gap is filled with sound insulation cotton to soundproof the sound generated by the movement of the mobile storage cart 5 and the rotation of the drive motor.

[0029] A door with an electronic lock (referred to as the clean area outer door 2) is located at the outer end of conveyor channel 1, and a door with an electronic lock (referred to as the isolation area inner door 3) is located at the inner end of conveyor channel 1. Conventional sealing strips are installed on the inner sides of both the clean area outer door 2 and the isolation area inner door 3. These seals effectively prevent the escape of virus-laden air and aerosols from the isolation area, potentially infecting clean area personnel. Sensors 29 (conventional sensors such as contact sensors or photoelectric sensors) are affixed to both the clean area outer door 2 and the isolation area inner door 3 to detect door open / close status. These sensors transmit signals to the corresponding mainboards of the clean area outer door and the isolation area inner door, enabling real-time detection of whether the corresponding door is open or closed. In addition to conventional electronic locks, both the clean area outer door 2 and the isolation area inner door 3 are equipped with conventional mechanical emergency door opening mechanisms. This allows for emergency door opening in the event of electronic lock failure or power outage, allowing for the removal of supplies or maintenance. The outer door 2 of the clean area and the inner door 3 of the isolation area are both opened sideways, with an opening angle greater than 90°, which is convenient for loading and unloading materials.

[0030] Two parallel rails 4 are fixedly connected at the bottom of the conveying channel 1. A mobile storage trolley 5 is slidably fitted on the two rails 4, and the bottom of the mobile storage trolley 5 is provided with four shock-absorbing pulleys 6 distributed in a rectangular shape. The use of the shock-absorbing pulleys 6 can prevent damage to materials when fragile materials are transported. The shock-absorbing pulleys 6 are limited on the rails 4 and the two are slidably fitted. A tray 7 is fixedly connected to the top of the mobile storage trolley 5. The upper surface of the tray 7 is frosted, and the transported materials placed on it can play an anti-slip role. A socket 7.1 is provided on the top of the tray 7 and near the four corners, and a storage box 8 or a blocking rod is inserted into each socket 7.1. The storage box 8 is used to transport small items, and when the storage box is removed and the blocking rod is inserted, it is used to transport large items. A chain 9 is fixedly connected to each side of the mobile storage trolley 5. Each chain 9 is wound around its own driving sprocket and driven sprocket to form a ring-shaped chain. The two driving sprockets can be fixedly connected to the same drive shaft, and a drive gear is coaxially fixed on each drive shaft. Finally, a drive motor 10 is connected to the drive gear in a conventional manner through a gear transmission, or the two driving sprockets are coaxially fixed to a drive motor in a conventional manner. At this time, the two drive motors move synchronously in the same direction. The drive motor 10 specifically adopts a conventional brake motor. Under the action of the brake motor, the mobile storage trolley 5 is driven to slide back and forth along the track 4 between the outer door of the clean area and the inner door 3 of the isolation area. Because a brake motor is used, the mobile storage trolley 5 can be stopped steadily when needed without sliding.

[0031] The present application also provides a mechanical anti-collision component in the conveying channel 1 and at both ends of the track 4. The mechanical anti-collision component includes a column 30, a buffer spring 31, and a rubber baffle 32. A vertically arranged column 30 is fixedly connected to the top of each left and right end of each track 4. All columns 30 are located in the conveying channel 1. A laterally extended or compressed buffer spring 31 is fixedly connected to the inner side of each column 30 (the position close to the center of the conveying channel 1 is called the inner side, and the opposite is called the outer side). A rubber baffle 32 is fixedly connected to the other end of each buffer spring 31. The mechanical anti-collision component is arranged on the outside of the corresponding position detection switch 23. The function of the mechanical anti-collision component is to prevent the mobile storage trolley 5 from derailing or damaging the inner door 3 of the isolation area or the outer door 2 of the clean area when the corresponding position detection switch fails.

[0032] An air inlet duct (i.e., a vertically mounted rigid tube) 11 is fixedly connected to the top of the conveying passage 1 near the clean area's outer door 2. The lowest end of this duct 11 is fixed to the conveying passage 1, connecting it to the inner cavity of the conveying passage 1. The main body of the air inlet duct 11 is located at the ventilation area outside the conveying passage 1. Conventionally, an air filter 12 and a first electric valve 13 are attached to the duct 11. The air filter 12 is used to filter out dust and other particulate matter from the air entering the duct, ensuring the cleanliness of the air entering the passage. The first electric valve 13 is located below the air filter 12 and is used to open and close the air inlet duct 11. The top of the air inlet duct 11 is open, and a rain cap 14 is fixed to it via a support rod. A distance is provided between the rain cap 14 and the top opening of the air inlet duct 11 to facilitate ventilation. This prevents rainwater, leaves, and other debris from entering the duct while ensuring air flow.

[0033] An exhaust duct 15 (i.e., a vertically mounted rigid tube) is secured to the top of the conveying channel 1 near the isolation zone's inner door 3. The bottom end of the exhaust duct 15 is fixed to the conveying channel 1 and communicates with the inner cavity of the conveying channel 1. The main body of the exhaust duct 15 is located outside the conveying channel 1. A fan 16 and a second electric valve 17 are conventionally secured to the exhaust duct 15, with the fan 16 positioned below the second electric valve 17. When the fan 16 is not operating, both the first electric valve 13 and the second electric valve 17 are closed, effectively maintaining a sealed environment within the conveying channel 1 and preventing virus-laden air and aerosols from entering the isolation zone. Through the air inlet duct 11 and exhaust duct 15, clean outdoor air is supplied to the conveying channel 1, ensuring clean air within the conveying channel 1. This prevents air from entering the isolation zone, thus preventing infection among clean area workers operating this equipment.

[0034] Lighting lamps 18 are installed at corresponding positions on the top of the conveying channel 1 near the outer door 2 of the clean area and the inner door 3 of the isolation area. The lighting lamps are turned on when the corresponding doors are opened and turned off when the corresponding doors are closed, which makes it convenient to place and take the required transport materials and saves electricity.

[0035] A plurality of ultraviolet lamps 19 are fixed on the top of the conveying channel 1 between the lighting lamps 18 on both sides. Figure 3 There are three in the middle), which are used to disinfect the conveying channel 1 and objects entering the conveying channel (such as mobile storage carts, supplies, etc.). A transparent protective cover is fixed outside each ultraviolet lamp 19, which ensures that ultraviolet rays can pass through while effectively protecting the ultraviolet lamp line tube from the risk of being broken.

[0036] A disinfection spray pipeline 24 is fixed in the area on the inner wall of the conveying channel 1 and between the air inlet pipeline 11 and the ultraviolet lamp 19. The disinfection spray pipeline 24 is distributed on the top, left and right sides of the inner wall of the conveying channel 1 (that is, the disinfection spray pipeline 24 is a "冂" shaped rigid pipe). A plurality of nozzles 25 are fixed on the disinfection spray pipeline 24. The nozzles 25 are connected to the disinfection spray pipeline 24. The disinfection spray pipeline 24 is finally connected and communicated with a disinfectant solution container 26 located outside the conveying channel 1. A booster pump 27 and a third electric valve 28 are installed on the pipeline connecting the disinfection spray pipeline 24 and the disinfectant solution container 26 in a conventional manner. The disinfectant solution container 26 contains conventional disinfectants such as 75% alcohol and 84 disinfectant solution. A liquid level sensor is fixedly connected at a suitable position on the inner wall of the disinfectant solution container 26 and near the top for monitoring the liquid level of the disinfectant solution in the disinfectant solution container. The function of the booster pump 27 is to be used in combination with the nozzles 25 to spray the disinfectant solution in a mist form, which can not only achieve a good disinfection effect but also relatively save the consumption of the disinfectant solution. The third electric valve 28 is usually in a closed state to prevent the disinfectant solution from flowing out and is opened when the booster pump 27 is working.

[0037] A plurality of position detection switches 23 are installed in the conveying channel 1. Specifically, a position detection switch 23 is provided at each of the two ends of the inner wall of the conveying channel 1 and near the track 4 (the position detection switch on the left is called detection switch 1, and the position detection switch on the left is called detection switch 2), a position detection switch 23 (called detection switch 4) is fixed at a suitable position on the right side of the disinfection spray pipeline 24 and near the disinfection spray pipeline, and a position detection switch 23 (called detection switch 3) is provided at a suitable position under the rightmost ultraviolet lamp 19. The position detection switch 23 is used to detect the position of the movable storage trolley 5. Once it detects that the movable storage trolley 5 is close to the two ends of the track 4, the driving motor 10 stops rotating, and at this time, materials can be loaded and unloaded from the movable storage trolley 5. When it detects that the movable storage trolley 5 transports materials from the isolation area to the clean area and is close to the disinfection spray pipeline 24, the movable storage trolley 5 starts to decelerate, the booster pump 27 is started, and the movable storage trolley and the like are sprayed with disinfectant solution for disinfection, which better protects the safety of the staff in the clean area.

[0038] In addition, the spray disinfection function and ultraviolet disinfection function in this application can also be started and stopped in a conventional manual manner. Specifically, the button for starting / stopping the spray disinfection function is designed on the first keypad on the outer door 2 of the clean area and the second keypad on the inner door 3 of the isolation area. By pressing the corresponding button, the key signal is transmitted to the corresponding main board, and the main board controls the ultraviolet lamp and the spray disinfection function. By manually starting and stopping ultraviolet disinfection, the ultraviolet disinfection time can be controlled, so that disinfection can be carried out for a longer time at night or during rest time, achieving a better disinfection effect. Of course, the transportation function of this device can also be stopped or started at any time during the ultraviolet disinfection process, thereby improving the use efficiency of this application.

[0039] A display screen 20, a keypad 21, and an intercom 22 are conventionally mounted on the outside of the clean area outer door 2 and the isolation area inner door 3. The display screen 20 is used to display the position of the mobile storage cart, the operating status of the mobile storage cart, the door opening status of the clean area outer door and the isolation area inner door, the operating time of the ultraviolet lamp, the real-time updated date and time, fault information, etc. The keys on the keypad 21 are used to start and stop the device, start and stop the mobile storage cart transport, start and stop the intercom, manually start and stop the fan, manually start and stop the ultraviolet lamp, manually start and stop the disinfectant spray booster pump, and return the mobile storage cart to its original position. The intercom 22 is used for communication between the isolation area and the clean area personnel. For example, after the clean area personnel have delivered supplies to the isolation area, they can provide prompts or voice conversations to the isolation area personnel. When supplies are lacking in the isolation area or when supplies are being delivered from the isolation area to the clean area, the intercom can also be used to notify the clean area personnel.

[0040] The display screen and keypad on the clean area outer door 2 are referred to as display screen I and the first keypad, respectively. The display screen and keypad on the isolation area inner door 3 are referred to as display screen II and the second keypad, respectively. The clean area outer door 2 is also secured with a main clean area door panel, while the isolation area inner door 3 is also secured with an inner isolation area door panel. The main board of the clean area outer door is electrically connected to the display screen I, the intercom 22 on the clean area outer door, the electronic door lock on the clean area outer door, the sensor 29 on the clean area outer door, the first keypad, the ultraviolet lamp 19, the drive motor 10, the position detection switch 23, the lighting lamp 18 near the clean area outer door 2, the first electric valve 13, the third electric valve 28, the liquid level sensor, and the booster pump 27; the main board of the isolation area inner door is electrically connected to the display screen II, the intercom 22 on the isolation area inner door 3, the lighting lamp 18 near the isolation area inner door 3, the second electric valve 17, the second keypad, the fan 16, the electronic door lock on the isolation area inner door 3, and the sensor on the isolation area inner door 3; and the main board of the clean area outer door and the main board of the isolation area inner door are electrically connected through a communication signal line. When the clean area outer door 2 is open, the first electric valve 13 is closed, the second electric valve 17 is opened, and the fan 16 is activated, creating a negative pressure in the conveying channel 1 of the device. Air flows in from the clean area outer door 2, better protecting the personnel in the outdoor clean area. When the clean area outer door 2 is closed, the fan 16 stops operating and the second electric valve 17 closes. The clean area outer door mainboard also counts the cumulative operating time of the ultraviolet lamp 19, which can be queried using the corresponding button on the first keypad. This facilitates the calculation of the cumulative operating time of the ultraviolet lamp and facilitates its timely replacement. When the cumulative operating time reaches a certain value, an alarm will appear on the display, prompting the replacement of a new ultraviolet lamp. After the new ultraviolet lamp is replaced, the original cumulative operating time can be reset. Signals are transmitted between the clean area outer door mainboard and the isolation area inner door mainboard via a signal line, controlling the simultaneous opening of the clean area outer door and the isolation area inner door to prevent infection of personnel in the clean area. The electronic components of this device are primarily powered by a power board, which comes with its own power plug.

[0041] When working, plug in the power plug and turn on the power switch to start the device. First, the device will self-check. If the clean area outer door 2 and the isolation area inner door 3 are closed and other functions are tested normally, the self-check will pass (if any door is not closed or other components are tested abnormally, the display will show fault information and fault code to prompt the operator to close the door or perform maintenance). After the self-check is passed, if Figure 6As shown, the mobile storage cart stops at designated position 3 in the middle of the conveying channel. The fan is controlled to run for a set time (e.g., 2 minutes) and then stops, allowing the channel of the device to be filled with clean air. After the fan stops, the ultraviolet light in the conveying channel illuminates and operates for a set time (e.g., 5 minutes) to disinfect the device after self-inspection. After disinfection is complete, the mobile storage cart automatically stops at designated position 1 near the clean area outer door, allowing the operator to begin use. The clean area staff opens the clean area outer door 2 of the device, and the light near the clean area outer door automatically illuminates. The operator places the materials to be transported on the mobile storage cart in the conveying channel. The clean area outer door is closed, and the light automatically turns off. The operator presses the start transport button on the first keypad, which starts the mobile storage cart and transports the materials to designated position 2 near the isolation area inner door of the device. (If the clean area outer door is not closed after the materials are placed on the storage cart, this function will not function. Display 1 will prompt "Please close the clean area outer door!" The function will only function after the door is closed.) At this point, the display on the isolation area's inner door indicates that supplies have been delivered, and a speaker on the main panel of the isolation area door emits a voice notification. Clean area staff can also use the intercom to call medical staff inside the isolation area to retrieve or speak with them. When medical staff in the isolation area open the isolation area's inner door, the corresponding light illuminates. The light turns off when they remove the supplies and close the door. The mobile storage cart then moves to designated position 3 in the center of the conveyor channel. The fan is controlled to run for a set time (e.g., 2 minutes) and then stops, allowing the channel to be filled with clean air. After the fan stops, the ultraviolet light in the channel operates for a set time (e.g., 10 minutes) to disinfect the device. After disinfection is complete, the mobile storage cart automatically stops at designated position 1 near the clean area's outer door. The display on the clean area's outer door prompts the operator to resume delivering supplies.

[0042] When the fan is working or the ultraviolet disinfection is in progress, the outer door of the clean area cannot be opened. The outer door of the clean area can only be opened when the mobile storage trolley stops at the designated position 1 near the passage of the outer door of the clean area and is in standby state.

[0043] If personnel in the isolation area need to transport supplies, they click the transport button on the second keypad. The mobile cart automatically moves to designated position 2 at the isolation area inner door. Staff members can then open the inner door, place supplies on the cart, close the door, and click the transport button. The cart automatically moves to designated position 4 at the clean area outer door (where a position detection switch is located). It then decelerates and the automatic disinfectant spray function activates, disinfecting the outer surfaces of the transported supplies. The cart disinfects as it moves forward, achieving comprehensive disinfection of the outer surfaces of the supplies. When the cart reaches designated position 1, the drive motor stops, stopping the cart. Disinfection is complete, and a message indicating that supplies are ready for collection appears on the display at the clean area outer door. Staff members can open the clean area outer door to remove the supplies, or they can manually activate the automatic disinfectant spray function before opening the door to disinfect the supplies again. (The cart will then move to designated position 4 and then, at a lower speed, toward the clean area outer door for another application of disinfectant.) When clean area staff open the outer door, the second electric valve 17 opens and the fan operates, creating a negative pressure in the device's channel, reducing the risk of infection for clean area staff and simultaneously removing the disinfectant mist from the channel. After the clean area staff removes the supplies and closes the door, they can click the manual disinfection button. The mobile storage cart then moves to the middle of the channel, and the fan stops after a certain period of time (e.g., 2 minutes). This allows the disinfectant mist in the device's channel to be completely removed, reducing the humidity in the channel while filling it with clean air. After the fan stops, the ultraviolet lamp in the channel operates for a certain period of time (e.g., 10 minutes) to disinfect the device. After disinfection is complete, the device's storage cart automatically stops at designated location 1 in the channel near the outer door of the clean area. The display on the outer door prompts the operator that supplies can be transported again.

Claims

1. A contactless material delivery device, comprising a conveying channel, characterized in that, one end of the conveying channel is located in a clean area and the other end is located in an isolation area. Doors with electromagnetic locks are installed at both ends of the conveying channel, which are respectively called the outer door of the clean area and the inner door of the isolation area. Sealing strips are provided at the contact parts between the outer door of the clean area and the conveying channel, and between the inner door of the isolation area and the conveying channel; Two parallel tracks are arranged at the bottom inside the conveying channel, and a movable storage trolley is slidably fitted on the tracks. The movable storage trolley is driven by a driving mechanism to slide back and forth on the tracks; Multiple ultraviolet lamps are fixed at the top inside the conveying channel; An air inlet pipeline is installed at a corresponding position outside the top of the conveying channel and close to the clean area. The bottom of the air inlet pipeline is communicated with the conveying channel, and a rainproof cap is fixed above the top. There is a gap between the rainproof cap and the top opening of the air inlet pipeline. An air filter and a first electric valve are fixed on the air inlet pipeline, and the first electric valve is located below the air filter; An exhaust pipeline is installed at a corresponding position outside the top of the conveying channel and close to the isolation area. A fan and a second electric valve are connected to the exhaust pipeline, and the second electric valve is located above the fan; A disinfection spray pipeline is fixed in the area between the air inlet pipeline and the ultraviolet lamp on the inner wall of the conveying channel. The disinfection spray pipeline is distributed at the top, left and right sides of the inner wall of the conveying channel. Multiple spray heads are fixed on the disinfection spray pipeline. The spray heads are communicated with the disinfection spray pipeline, and the disinfection spray pipeline is finally communicated with a disinfectant container located outside the conveying channel. A booster pump and a third electric valve are installed on the pipeline connecting the disinfection spray pipeline and the disinfectant container; Four shock-absorbing pulleys distributed in a rectangle are fixed at the bottom of the movable storage trolley; A tray is fixedly connected to the top of the movable storage trolley; A socket is opened at each position near the four corners on the top of the tray, and a storage box or a blocking rod is inserted into the socket; Multiple position detection switches are installed inside the conveying channel. Specifically, one position detection switch is provided at each of the two ends near the tracks, one position detection switch is provided at a corresponding position near the disinfection spray pipeline, and one position detection switch is provided at a corresponding position below the ultraviolet lamp; Mechanical anti-collision components are provided at both ends of the track inside the conveying channel. The mechanical anti-collision components include columns, buffer springs and rubber baffles. Among them, a vertically arranged column is fixedly connected to the top of each end of each track, a buffer spring is fixedly connected to the inner side of each column, and a rubber baffle is fixedly connected to the other end of each buffer spring.

2. A contactless material delivery device according to claim 1, characterized in that, the driving mechanism includes two parallel chains, sprockets, a gearbox and a driving motor; The two sides of the movable storage trolley are respectively fixed on a chain. Each chain is wound around its own driving sprocket and driven sprocket to form an annular chain. The two driving sprockets are driven by the same driving motor or by their respective driving motors; The driving motor is a brake motor.

3. A contactless material distribution device according to claim 1, characterized in that, lighting lamps are installed at corresponding positions at the top inside the conveying channel and close to the outer door of the clean area and the inner door of the isolation area.

4. A contactless material distribution device according to claim 1, characterized in that, it further includes a main board of the outer door of the clean area and a main board of the inner door of the isolation area. The main board of the outer door of the clean area is fixed on the outer door of the clean area, and a display screen I, a first keypad, and an intercom are further fixed on the outer side of the outer door of the clean area. The main board of the outer door of the clean area is electrically connected to the display screen I, the intercom, the electronic door lock on the outer door of the clean area, the first keypad, the ultraviolet lamp, the drive motor, the position detection switch, the lighting lamp near the outer door of the clean area, the first electric valve, the third electric valve, the liquid level sensor, and the booster pump respectively; the main board of the inner door of the isolation area is fixed on the inner door of the isolation area, and a display screen II, a second keypad, and an intercom are further fixed on the outer side of the inner door of the isolation area. The main board of the inner door of the isolation area is electrically connected to the display screen II, the corresponding intercom, the lighting lamp near the inner door of the isolation area, the second electric valve, the second keypad, the fan, and the electronic door lock on the inner door of the isolation area respectively; the main board of the outer door of the clean area and the main board of the inner door of the isolation area are connected through a communication signal line.

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