Induction type car antibacterial spraying device

Abstract

The invention discloses an induction type car antibacterial spraying device which comprises a car main body, a liquid storage container and a liquid supply pump which are arranged at the top of the car main body, and a lifting driving mechanism which is fixedly arranged at the top of the car main body, the lifting driving mechanism comprises a supporting frame and a main driving cylinder fixed to the top end of the supporting frame, an elastic sealing cover is arranged at the bottom of the supporting frame, and annular cleaning cotton is arranged on the inner side of the elastic sealing cover; the transmission spraying mechanism is connected with the output end of the lifting driving mechanism, the transmission spraying mechanism comprises a linkage sliding plate, a rotating shaft support, a transmission rolling shaft, a gear, a rack, a driving bevel gear, a driven bevel gear, a spraying connecting shaft and an atomizing nozzle, and through automatic liquid supplementing, hidden spraying and intelligent induction control, safe, efficient, attractive, convenient and fast automatic disinfection is achieved; and meanwhile, the structure is stable and maintenance is convenient.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automatic disinfection and sterilization, in particular to an inductive car antibacterial spraying device. BACKGROUND

[0002] As a common transportation tool for high-rise vertical buildings, car elevators are often used in office buildings and communities. As a public place with a large number of people and high mobility, car elevators are prone to spread bacteria and viruses.

[0003] Publication No. CN212799210U discloses an automatic disinfection elevator. The spraying device can be rotated in the car by the rotating shaft, so that the disinfectant can be diffused in the car. The spraying device can automatically disinfect the car. However, the patent still has the following problems in actual use: On the one hand, the liquid storage device is arranged above the top plate of the car. When it is necessary to add or replace the disinfectant, the operator needs to disassemble or climb the top plate of the elevator. This not only increases the complexity of maintenance work and reduces the convenience of disinfectant replenishment, but also may affect the stability of the elevator structure due to frequent disassembly of the top plate. On the other hand, the core components such as the spray pipe of the spraying device directly extend into the car through the top plate hole. When the device is not started for disinfection, these exposed tubular structures are exposed to the top of the car for a long time, which not only destroys the overall appearance of the car interior and contradicts the simple design concept of modern elevators, but also poses a safety hazard. The protruding components may collide when passengers enter or exit the car or carry goods, especially for special groups, which poses a potential risk of scratching and is difficult to meet the dual needs of safety and aesthetics during elevator use.

[0004] Therefore, an inductive car antibacterial spraying device is proposed to solve the problems mentioned above. SUMMARY

[0005] The purpose of the present application is to provide an inductive car antibacterial spraying device to solve the two problems of the current elevator disinfection device mentioned in the background art: the liquid storage device is arranged above the top plate of the car, which makes the maintenance complicated and affects the stability of the elevator structure, and the core components of the spraying device are exposed to the top of the car, which destroys the aesthetics and poses a safety hazard, making it difficult to meet the dual needs of safety and aesthetics.

[0006] To achieve the above purpose, the present application provides the following technical scheme: an inductive car antibacterial spraying device, comprising a car main body, a liquid storage container arranged on the top of the car main body, and a liquid supply pump, the input end of the liquid supply pump being in communication with the liquid storage container, further comprising: The lifting driving mechanism is fixedly arranged at the top of the car body, and comprises a support frame and a main driving cylinder fixed at the top end of the support frame. The transmission spray mechanism is connected with the output end of the lifting driving mechanism, and comprises a linkage sliding plate, a rotating shaft support, a transmission roller, a gear, a rack, a driving bevel gear, a driven bevel gear, a spray connecting shaft and an atomizing nozzle. The linkage sliding plate is fixedly connected with the output end of the main driving cylinder and can be driven to ascend and descend along the height direction of the support frame. The rotating shaft support is fixed to one side of the linkage sliding plate. The transmission roller is rotatably connected to the rotating shaft support. The gear is fixed to the transmission roller. The rack is fixed to the support frame and is engaged with the gear. The driving bevel gear is fixed to one end of the transmission roller. The spray connecting shaft is rotatably connected with the linkage sliding plate through a shaft sleeve support. The driven bevel gear is fixed to the top end of the spray connecting shaft and is engaged with the driving bevel gear. The atomizing nozzle is fixed to the bottom end of the spray connecting shaft. The spray connecting shaft is communicated with the output end of the liquid supply pump through a liquid supply hose. An electromagnetic flow valve is arranged on the liquid supply hose. The induction control unit comprises a controller, a human body sensor and a car height sensor. The human body sensor and the car height sensor are electrically connected with the controller. The human body sensor is arranged inside a lampshade at the top of the car. A plurality of human body sensors are arranged and distributed at the top corners inside the car body. The controller is electrically connected with the main driving cylinder, the liquid supply pump and the electromagnetic flow valve, and is used to control the lifting stroke of the lifting driving mechanism, the rotation speed of the transmission roller and the opening degree of the electromagnetic flow valve according to the detection signals of the human body sensor and the car height sensor. The automatic liquid supplementing system comprises a sealed power cylinder, a power telescopic cylinder and a liquid level monitor. The power telescopic cylinder is fixed at the top end of the sealed power cylinder, and a piston assembly that can seal slidingly in the sealed power cylinder is connected to the output end of the power telescopic cylinder. The bottom end of the sealed power cylinder is provided with an inlet channel and an outlet channel. The outlet channel is communicated with the liquid storage container. A one-way valve is arranged in each of the inlet channel and the outlet channel. The liquid level monitor is arranged in the liquid storage container and is electrically connected with the controller. The controller is electrically connected with the power telescopic cylinder and is internally provided with a disinfection-liquid supplementing interlocking module. When the liquid supply pump is started, the power telescopic cylinder is locked, and the extension and retraction speed of the power telescopic cylinder is adjusted according to the liquid level information detected by the liquid level monitor.

[0007] Preferably, the spray connecting shaft is internally provided with a water inlet hole, one end of the liquid supply hose is rotatably connected to the top end of the spray connecting shaft and communicates with the water inlet hole, and the other end of the liquid supply hose penetrates through the support frame and is fixedly connected to the output end of the liquid supply pump.

[0008] Preferably, the one-way valve comprises a block, a spring and a through hole, the block is slidingly arranged at the end of the liquid inlet channel and used for closing the liquid inlet of the liquid inlet channel, the spring is arranged in the liquid inlet channel, one end of the spring is connected to the inner wall of the liquid inlet channel, the other end of the spring is connected to the block, the spring provides a pre-tightening force for the block towards the liquid inlet, and the through hole is arranged in the side wall of the block.

[0009] Preferably, the automatic liquid supplementing system further comprises a flow guide elbow connected between the liquid outlet channel and the liquid storage container.

[0010] Preferably, the controller pre-stores "height-travel-rotation speed-flow rate" correlation data, when the car height sensor detects that the net height in the car is less than or equal to 2 m, the controller controls the descending travel of the spray connecting shaft to be 0.3 m, the rotation speed of the transmission roller is 30 r / min, and the opening degree of the electromagnetic flow valve is 50%; when the net height in the car is greater than 2 m, the controller controls the descending travel of the spray connecting shaft to be 0.5 m, the rotation speed of the transmission roller is 60 r / min, and the opening degree of the electromagnetic flow valve is 80%.

[0011] Preferably, when the human body sensor detects that there is no one in the car for three times in succession, the controller controls the transmission spray mechanism to enter an enhanced mode, the rotation speed of the transmission roller is increased to 80 r / min, and the electromagnetic flow valve is adjusted to a fully open state.

[0012] Preferably, if the liquid level monitor detects that the liquid level in the liquid storage container is lower than an emergency threshold value and the human body sensor detects that there is no one in the car and disinfection needs to be started, the controller triggers a priority disinfection mode and controls the display screen in the car to prompt information that disinfection liquid needs to be supplemented.

[0013] Preferably, the liquid level monitor is used to detect the difference ΔH between the current liquid level and the full liquid level in the liquid storage container in real time, when ΔH is greater than 50%, the controller controls the extension and retraction speed of the power telescopic cylinder to be 10 mm / s; when ΔH is less than or equal to 20%, the controller controls the extension and retraction speed of the power telescopic cylinder to be 3 mm / s.

[0014] Preferably, the elastic sealing cover is made of silica gel, and the edge of the elastic sealing cover is elastically connected to the bottom of the support frame through a spring.

[0015] Preferably, the controller is configured to control the liquid supply pump to start for a preset time period after the spray connecting shaft is fully received, so as to perform reverse flushing on the water inlet hole in the spray connecting shaft.

[0016] Compared with the prior art, the beneficial effects of the present application are that the induction type car antibacterial spraying device realizes safe and efficient, beautiful and convenient automatic disinfection through automatic liquid supplement, concealed spraying and intelligent induction control, while taking into account the structural stability and maintenance convenience, and the specific contents are as follows: Firstly, by setting an automatic liquid supplement system including a sealed power cylinder, a power telescopic cylinder and a liquid level monitor, the automatic liquid supplement function of the liquid storage container is realized. Without the need for an operator to disassemble or climb the elevator top plate, the degree of complexity of the maintenance work is reduced, the convenience of disinfectant supplement is improved, and the risk of affecting the structural stability of the elevator due to frequent disassembly and assembly of the top plate is avoided. The liquid level monitor can monitor the liquid level in the liquid storage container in real time, and the controller adjusts the extension and retraction speed of the power telescopic cylinder according to the liquid level information, so as to ensure that the liquid storage container always contains an appropriate amount of disinfectant, and the disinfection-liquid supplement interlocking module ensures the orderly performance of disinfection and liquid supplement.

[0017] Secondly, a lifting drive mechanism and a transmission spraying mechanism are provided, and when the device is not started for disinfection, the spray connecting shaft and the atomizing nozzle can be lifted and received into the support frame under the drive of the main drive cylinder, and the elastic sealing cover seals the bottom of the support frame, avoiding the long-term exposure of the spraying components to the top of the car. This design conforms to the minimalist design concept of modern elevators, maintaining the overall aesthetics of the car interior; at the same time, it eliminates the safety hazards that protruding parts may collide with passengers entering or exiting the car or carrying goods, reduces the potential risk of scratches to special groups, and meets the dual needs of safety and aesthetics during the use of the elevator.

[0018] Meanwhile, the induction control unit obtains the personnel situation and space height information in the car through the human body sensor and the car height sensor, and the controller controls the lifting stroke of the lifting drive mechanism, the rotation speed of the transmission roller and the opening of the electromagnetic flow valve according to these detection signals and the pre-stored "height-travel-rotation speed-flow" correlation data. When the net height in the car is different, the corresponding parameters can be automatically adjusted to ensure the disinfection effect while avoiding waste of disinfectant. In addition, there are also enhanced mode and priority disinfection mode, which further improve the flexibility and applicability of disinfection operation.

[0019] Finally, the water inlet hole is arranged in the spray connecting shaft, the liquid supply hose is rotatably connected with the top end of the spray connecting shaft and is connected with the water inlet hole, so that normal liquid supply is ensured when the spray connecting shaft rotates. The one-way valve ensures one-way flow of the liquid in the automatic liquid supplementing system, and improves the reliability of liquid supplementing. The elastic sealing cover is made of silica gel and is elastically connected with the support frame through a spring, so that the sealing effect is ensured and the elastic sealing cover can also play a buffering role when the spray connecting shaft is lifted. The controller controls the liquid supply pump to start reverse flushing for a preset time after the spray connecting shaft is lifted and stored, which helps to keep the inside of the spray connecting shaft unobstructed and prolong the service life of the device. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the application; Figure 2 It is a schematic diagram of the overall internal structure of the application; Figure 3 It is a schematic diagram of the distribution structure of the human body sensor in the application; Figure 4 It is a schematic diagram of the internal structure of the support frame in the application; Figure 5 It is a schematic diagram of the structure of the transmission spray mechanism in the application; Figure 6 It is a schematic diagram of the cross-sectional structure of the spray connecting shaft in the application; Figure 7 It is a schematic diagram of the local cross-sectional structure of the sealing power cylinder in the application; Figure 8 It is a schematic diagram of the internal cross-sectional structure of the liquid inlet channel.

[0021] In the figure: 1, car body; 2, support frame; 201, main drive cylinder; 202, linkage sliding plate; 203, rotating shaft support; 204, transmission roller; 205, gear; 206, rack; 207, driving bevel gear; 208, driven bevel gear; 209, spray connecting shaft; 210, shaft sleeve support; 211, atomizing nozzle; 212, liquid supply hose; 213, water inlet hole; 3, liquid supply pump; 4, liquid storage container; 401, liquid level monitor; 5, sealing power cylinder; 501, power telescopic cylinder; 502, piston assembly; 503, liquid inlet channel; 504, liquid outlet channel; 505, flow guide elbow; 506, stop block; 507, spring; 508, through hole; 6, controller; 7, lampshade; 701, human body sensor. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application. Embodiments

[0023] As shown in the drawings, Figures 1-8 The inductive car antibacterial spraying device of the present application is mainly applied to elevator cars, medical lifting cars, shopping mall escalator cars and other densely populated and closed spaces, aiming to realize antibacterial disinfection in the car interior without dead angles through automatic induction control and precise spraying technology, while considering the safety, stability and convenience of device operation. The overall architecture of the device takes "induction control as the core, mechanical transmission as the execution, and fluid supply as the support", and is composed of four core modules of lifting driving mechanism, transmission spraying mechanism, induction control unit and automatic liquid supplementing system, and basic components such as car body 1, liquid storage container 4 and liquid supply pump 3. Each module is connected through electrical signal linkage and fluid pipeline, forming a closed-loop working system of "induction triggering-spraying execution-liquid supplementing guarantee", which can automatically adjust the working parameters according to the personnel situation and space height in the car, meeting the antibacterial disinfection needs in different scenarios. As shown in the drawings, Figure 4 The lifting driving mechanism, as the bearing and lifting power source of the transmission spraying mechanism, is fixedly installed at the central position of the top of the car body 1, and its core function is to drive the transmission spraying mechanism to lift along the vertical direction. During disinfection operation, the atomizing nozzle 211 is lowered to the appropriate height, and after the operation is completed, it is stored in the top of the car, avoiding interference with the activities of the personnel in the car. At the same time, the elastic sealing cover realizes dustproof, waterproof and protective function in the storage state. Support frame 2: made of 304 stainless steel material and welded into a whole, the overall structure is "cylindrical frame", the frame height is 600mm; the bottom of the support frame 2 is fixedly connected with the top of the car through 4 groups of M12 expansion bolts, and the open end of the bottom is used for installing the elastic sealing cover. Main drive cylinder 201: double-acting pneumatic cylinder (also can be replaced by electric push rod according to demand), cylinder diameter is 50mm, stroke is 500mm, working pressure range is 0.4~0.8MPa, output end is fixedly connected with the central position of the upper surface of the linkage sliding plate 202 through flange plate; the air inlet of the main drive cylinder 201 is connected with the compressed air source through the electromagnetic valve, the electromagnetic valve is electrically connected with the controller 6, the extension and retraction action of the electromagnetic valve is controlled by the controller 6, realizing the lifting control of the linkage sliding plate 202, and the lifting speed can be adjusted through the flow regulating valve, the range is 50~100mm / s. Elastic sealing cover: made of food-grade silicone material, the overall structure is "circular cover plate", the edge of the elastic sealing cover is elastically connected to the bottom edge of the support frame 2 through 8 groups of springs 507 evenly distributed along the circumference, the pre-compression amount of the spring 507 is 15mm, which ensures that the elastic sealing cover is tightly attached to the bottom opening of the support frame 2 in the natural state, realizing sealing; the inner side of the elastic sealing cover (the side facing the inside of the support frame 2) is bonded with a ring-shaped cleaning cotton (material: superfine fiber, thickness: 8mm, inner diameter: 280mm, outer diameter: 300mm), when the drive spray mechanism is raised for storage, the ring-shaped cleaning cotton can wipe and clean the outer wall of the spray connecting shaft 209, remove the surface residual disinfectant, and avoid the disinfectant from dropping and contaminating the inside of the car. Connection relationship with other modules: the support frame 2 provides lifting guide for the linkage sliding plate 202 of the drive spray mechanism, the output end of the main drive cylinder 201 directly drives the linkage sliding plate 202 to lift, and then drives the entire drive spray mechanism to lift synchronously; the inner side wall of the support frame 2 is also fixedly installed with a rack 206, which provides a rack meshing basis for the rotation of the drive roller 204, realizing the linkage of "lifting action and rotating action".

[0024] As shown in Figures 5-6 The drive spray mechanism is fixedly connected with the linkage sliding plate 202 of the lifting drive mechanism as the atomization and spraying execution component of the disinfectant, and its core function is to atomize the disinfectant delivered by the liquid supply pump 3 through the atomizing nozzle 211, and realize 360° rotation of the atomizing nozzle 211 in the lifting process by the meshing transmission of the gear 205 and the rack 206, the reversing transmission of the driving bevel gear 207 and the driven bevel gear 208, ensuring uniform spraying of the disinfectant in the car without disinfection dead angle. Linkage sliding plate 202: made of aluminum alloy material, in the form of "rectangular plate", length 200mm, width 150mm, thickness 10mm; the upper surface of the linkage sliding plate 202 is fixedly connected with the output end of the main drive cylinder 201, the shaft support 203 is fixedly installed on one side of the lower surface, and the spray connecting shaft 209 is installed on the lower side through the shaft sleeve support 210, which is the bearing matrix of the entire drive spray mechanism. Rotating shaft support 203 and transmission roller 204: rotating shaft support 203 is a "U-shaped" stainless steel support, which is fixed to the lower surface of linkage sliding plate 202 by bolts, and is rotatably connected with transmission roller 204 through two groups of deep groove ball bearings inside the support; transmission roller 204 is a stainless steel shaft with a diameter of 20 mm and a length of 120 mm, one end of which extends outside the rotating shaft support 203 for mounting driving bevel gear 207, and the other end is fixed in interference fit with gear 205; the rotating power of transmission roller 204 is derived from the meshing of gear 205 and rack 206 - when linkage sliding plate 202 is lifted with main drive cylinder 201, gear 205 rolls along fixed rack 206, thereby driving transmission roller 204 to rotate synchronously, and the rotation speed is related to the lifting speed of linkage sliding plate 202 and the number of teeth of gear 205 (the number of teeth is 20, and the module is 2), for example, when the lifting speed is 80 mm / s, the rotation speed is about 40 r / min. Gear 205 and rack 206: gear 205 is a spur cylindrical gear made of 45 steel, the surface of which is quenched and tempered (hardness HRC 28~32), the number of teeth is 20, and the module is 2, and it is fixed in interference fit with transmission roller 204; rack 206 is a straight toothed rack with a length consistent with the height of support frame 2 (600 mm), a module of 2, and is fixed to the inner wall of support frame 2 by bolts, with the tooth surface facing gear 205, ensuring that gear 205 and rack 206 are always in meshing without the risk of tooth disengagement; the transmission efficiency of the two is ≥95%, which can stably convert the linear lifting motion of linkage sliding plate 202 into the rotational motion of transmission roller 204. Bevel gear transmission assembly (driving bevel gear 207 and driven bevel gear 208): driving bevel gear 207 and driven bevel gear 208 are both straight bevel gears made of 45 steel, the surface of which is quenched (hardness HRC 55~60), the number of teeth is 15, the module is 2, and the transmission ratio is 1:1; driving bevel gear 207 is fixed in interference fit with the extended end of transmission roller 204, and driven bevel gear 208 is fixed in interference fit with the top end of spray connecting shaft 209, both of which are vertically meshed (meshing angle 90°), which is used to convert the horizontal rotational motion of transmission roller 204 into the vertical rotational motion of spray connecting shaft 209, thereby driving the 360° rotational spraying of atomizing nozzle 211.

[0025] Spray connecting shaft 209 and atomizing nozzle 211: The spray connecting shaft 209 is a stainless steel hollow shaft with a diameter of 25mm and a length of 500mm. It has an inlet hole 213 (10mm diameter) along the axis inside for conveying disinfectant. The middle part of the spray connecting shaft 209 is rotatably connected to the linkage slide plate 202 through the bushing support 210 (the bushing support is equipped with a rolling bearing to ensure smooth rotation). The top end is equipped with a driven bevel gear 208, and the bottom end is connected to the atomizing nozzle 211 through a thread. The atomizing nozzle 211 is a high-pressure atomizing nozzle with a working pressure range of 0.2~0.5MPa, an atomized particle diameter of 10~50μm, a spray angle of 120°, and a single nozzle flow rate range of 0.5~2L / h. The flow rate can be adjusted by an electromagnetic flow valve according to the disinfection requirements. Liquid supply hose 212 and electromagnetic flow valve: Liquid supply hose 212 is a food-grade PU tube with an inner diameter of 10mm, an outer diameter of 16mm, and a pressure resistance of 1.0MPa. One end of it is connected to the water inlet 213 at the top of the spray connecting shaft 209 via a rotary joint (the rotary joint ensures that the liquid supply hose 212 does not tangle when the spray connecting shaft 209 rotates). The other end passes through the wire hole at the top of the support frame 2 and is fixedly connected to the output end of the liquid supply pump 3. The electromagnetic flow valve is connected in series with the liquid supply hose 212. It is a DN10 model with a working voltage of DC24V and a flow rate adjustment range of 0~2L / h. It is electrically connected to the controller 6, and the controller 6 adjusts its opening according to the car height and disinfection mode to precisely control the flow rate of disinfectant. Transmission logic and spray coverage: When the main drive cylinder 201 drives the linkage slide plate 202 to descend, the gear 205 rolls along the rack 206, driving the transmission roller 204 to rotate → the active bevel gear 207 rotates with the transmission roller 204, driving the driven bevel gear 208 to rotate through meshing → the spray connecting shaft 209 rotates with the driven bevel gear 208, driving the atomizing nozzle 211 to rotate 360° → at the same time, the liquid supply pump 3 delivers the disinfectant in the liquid storage container 4 through the liquid supply hose 212 and the water inlet 213 of the spray connecting shaft 209 to the atomizing nozzle 211, which is then sprayed after atomization; taking a net height of 2.5m in the car as an example, when the spray connecting shaft 209 descends by 50mm, combined with the 120° spray angle and 360° rotation, it can achieve no dead angle coverage within a diameter of 3m, meeting the disinfection needs of a conventional elevator car (size 1.5m×1.5m×2.5m). like Figures 2-3 As shown, the sensing control unit, as the "brain" of the device, collects information such as the status of people in the car and the height of the space, and then precisely controls the actuators such as the lifting drive mechanism, the transmission spray mechanism, and the liquid supply pump 3 to achieve intelligent operation of "automatic disinfection when no one is present, stopping operation when someone is present, and adaptive adjustment at different heights". It also has functions such as mode switching and fault alarm. Controller 6: PLC controller (model S7-200 SMART) is installed in the electrical control cabinet on the top of the car, with built-in power module (input AC220V, output DC24V), signal acquisition module and output control module; Controller 6 has pre-stored "height-travel-rotation speed-flow" correlation database, which can automatically match the corresponding spray connecting shaft 209 descent travel, transmission roller 204 rotation speed and electromagnetic flow valve opening according to the detection data of the car height sensor, to ensure the balance of disinfection effect and disinfectant consumption.

[0026] Human sensor 701: Four infrared human sensor (detection distance 0.1-5m, detection angle 120°) are installed at the four corners inside the car body 1 (inside the lampshade 7 to avoid strong light interference); Each human sensor 701 is connected to the signal acquisition module of the controller 6 through the signal line, which is used to detect whether there is a person in the car in real time; The controller 6 sets "three consecutive detections without people" as the disinfection trigger condition (each detection interval is 10s to avoid misjudgment), and starts disinfection when the condition is met; If a person is detected during disinfection, the main drive cylinder 201 will be controlled to retract, the transmission spray mechanism will be stored, and the liquid supply pump 3 and the electromagnetic flow valve will be turned off to stop disinfection. Car height sensor: Laser ranging sensor (measurement range 0.5-5m, accuracy ±1mm) is installed on the top of the car near the side wall, with the measurement direction vertically downward, which is used to detect the net height in the car (the distance from the sensor installation position to the car floor); The sensor is connected to the controller 6 through the signal line, and the detection data is transmitted to the controller 6 in real time, and the controller 6 matches the working parameters according to the data, for example: when the net height in the car is ≤2m (such as after placing a sickbed in the medical car), the spray connecting shaft 209 descent travel is 0.3m, the transmission roller 204 rotation speed is 30r / min, and the electromagnetic flow valve opening is 50%, to avoid waste of disinfectant due to too high spray or affect coverage due to too low spray; When the net height is >2m, switch to parameters of travel 0.5m, rotation speed 60r / min and opening 80%. Special control mode Enhanced mode: As claimed in claim 6, when the human sensor 701 detects no one in the car for three consecutive times, the controller 6 automatically triggers the enhanced mode, which increases the rotation speed of the transmission roller 204 to 80r / min (by increasing the lifting speed, such as adjusting the main drive cylinder 201 lifting speed to 100mm / s), the electromagnetic flow valve is fully opened (flow rate 2L / h), and the disinfection time is extended to 5min, which is suitable for deep disinfection during frequent personnel flow period (such as after the early peak in the mall). Priority disinfection mode: as claim 7, when the liquid level monitor 401 detects that the liquid level in the liquid storage container 4 is below the emergency threshold (such as 10% of the total volume), and the human sensor 701 detects that no one needs to be disinfected, the controller 6 triggers the priority disinfection mode - controls the liquid supply pump 3 to run at the lowest flow rate (0.5L / h) and the spray connecting shaft 209 at a short stroke (0.2m) to ensure that the current disinfection operation is completed, and at the same time, the display screen (electrically connected with the controller 6) in the elevator car displays the prompt information "disinfectant is insufficient, please replenish in time" to remind the maintenance personnel to replenish the liquid. Reverse flushing mode: after the spray connecting shaft 209 is raised and stored, the controller 6 controls the liquid supply pump 3 to start in reverse for a preset time (usually 30s) to flush the residual disinfectant in the water inlet hole 213 of the spray connecting shaft 209 with clean water (which can be reserved in the liquid storage container 4 or set up a separate clean water tank) through the liquid supply hose 212, to prevent disinfectant crystallization from blocking the pipeline and prolong the service life of the device. As shown in Figures 7-8 The automatic liquid replenishing system is used with the liquid storage container 4, and the core function is to automatically replenish disinfectant to the liquid storage container 4 according to the change of the liquid level in the liquid storage container 4, avoiding the tediousness of frequent manual liquid replenishment, ensuring that the disinfectant does not backflow during the liquid replenishing process through the one-way valve, ensuring that the disinfection operation and the liquid replenishing operation do not conflict through the disinfection-liquid replenishing interlocking module, and improving the convenience and safety of the device operation.

[0027] Sealed power cylinder 5 and power telescopic cylinder 501: the sealed power cylinder 5 is a cylindrical cylinder made of stainless steel, with a diameter of 80mm, a length of 300mm, and an internal volume of about 1.5L, used for storing disinfectant to be replenished; the power telescopic cylinder 501 is an electric telescopic cylinder installed at the top of the sealed power cylinder 5, with the output end extending into the inside of the sealed power cylinder 5 and fixedly connected with the piston assembly 502 (composed of a piston and a sealing ring, which can slide and seal in the cylinder); the telescopic stroke of the power telescopic cylinder 501 is 200mm, and the telescopic speed can be adjusted (such as claim 8, adjusted according to the liquid level difference ΔH), and the power telescopic cylinder 501 is electrically connected with the controller 6 and controlled by the controller 6 to move - when liquid needs to be replenished, the power telescopic cylinder 501 pushes the piston assembly 502 to move downward, compresses the space in the sealed power cylinder 5, and forces the disinfectant to enter the liquid storage container 4 through the liquid outlet passage 504; when the liquid replenishing is completed or no liquid needs to be replenished, the power telescopic cylinder 501 drives the piston assembly 502 to move upward, forming a negative pressure in the sealed power cylinder 5, and the external disinfectant is sucked into the cylinder through the liquid inlet passage 503 to complete the liquid absorption. The inlet channel 503 and the outlet channel 504 are both stainless steel pipes with an inner diameter of 15 mm and an outer diameter of 20 mm. The inlet channel 503 is connected to the bottom side wall of the sealed power cylinder 5 at one end and extends to the outside disinfectant storage barrel (which needs to be separately configured with a volume of ≥20L) at the other end, for sucking in external disinfectant. The outlet channel 504 is connected to the bottom central position of the sealed power cylinder 5 at one end and is connected to the top liquid supplementing port of the liquid storage container 4 through a flow guide elbow 505 at the other end. The flow guide elbow 505 is a 90° stainless steel elbow, which can avoid splashing of disinfectant during transportation due to excessive flow speed. The structure of the one-way valve, taking the one-way valve in the inlet channel 503 as an example: the stop block 506 is a cylindrical block made of rubber with a diameter consistent with the inner diameter of the inlet channel 503 (15 mm) and a length of 20 mm. A nitrile rubber sealing ring is fitted on the outside of the stop block 506 to ensure airtight fit with the inner wall of the inlet channel 503. The spring 507 is a cylindrical compression spring with a wire diameter of 1.5 mm, an outer diameter of 12 mm, and a free length of 30 mm. One end of the spring 507 is welded to the stepped surface inside the inlet channel 503, and the other end is welded to the end face of the stop block 506 to provide a pre-tightening force (pre-compression of 10 mm) for the stop block 506 towards the liquid inlet. In the natural state, the stop block 506 closes the liquid inlet of the inlet channel 503. The through hole 508 is a circular hole with a diameter of 3 mm, and a total of 4 are evenly distributed along the circumferential wall of the stop block 506. When negative pressure is formed in the sealed power cylinder 5, the pressure of the external disinfectant overcomes the pre-tightening force of the spring 507, pushing the stop block 506 to move towards the inside of the channel. The through hole 508 is connected to the inlet channel 503, and the disinfectant enters the sealed power cylinder 5 through the through hole 508. When the pressure in the sealed power cylinder 5 increases, the stop block 506 is pressed against the liquid inlet under the action of pressure, and the through hole 508 is blocked by the inner wall of the channel, preventing the disinfectant from flowing back. The structure of the one-way valve in the outlet channel 504 is consistent with that in the inlet channel 503, except that the installation direction is reversed, ensuring that the disinfectant can only flow from the sealed power cylinder 5 to the liquid storage container 4 and cannot flow in the opposite direction. The liquid level monitor 401 and the disinfecting-liquid supplementing interlocking module: The liquid level monitor 401 is an ultrasonic liquid level sensor (measurement range 0~500 mm, accuracy ±2 mm) installed on the inside top of the liquid storage container 4, used to detect the liquid level of the disinfectant in the liquid storage container 4 in real time and convert the detection data into an electrical signal to be transmitted to the controller 6. The disinfecting-liquid supplementing interlocking module built-in the controller 6 realizes the control of "disinfecting operation and liquid supplementing operation not being performed at the same time" through software logic. When the liquid supply pump 3 is started (i.e., the disinfecting operation begins), the interlocking module locks the power telescopic cylinder 501, making it unable to act. When the liquid supply pump 3 is turned off (the disinfecting operation ends), and the liquid level monitor 401 detects that the liquid level is lower than the liquid supplementing threshold (such as 30% of the total volume), the interlocking module unlocks the power telescopic cylinder 501, allowing the liquid supplementing operation to be started. The liquid supplementing speed control logic is as follows: as claimed in claim 8, the liquid level monitor 401 calculates the difference AH between the current liquid level in the liquid storage container 4 and the full liquid level (80% of the total height of the liquid storage container 4) in real time, when AH>50% (i.e. the liquid level is seriously insufficient), the controller 6 controls the extension and retraction speed of the power telescopic cylinder 501 to be 10 mm / s, to accelerate the liquid supplementing speed and shorten the liquid supplementing time; when 20%<AH≤50% (the liquid level is moderately insufficient), the extension and retraction speed is adjusted to 7 mm / s; when AH≤20% (the liquid level is close to the full liquid level), the extension and retraction speed is reduced to 3 mm / s, to avoid the disinfectant from overflowing due to too fast liquid supplementing, and to realize "on-demand adjustment and precise liquid supplementing". Connection relationship with other modules: the automatic liquid supplementing system is connected with the liquid storage container 4 through the flow guide elbow 505 of the liquid outlet channel 504, to supplement the disinfectant for the liquid storage container 4; the liquid level monitor 401 is electrically connected with the controller 6, to transmit the liquid level information to the controller 6; the controller 6 is electrically connected with the power telescopic cylinder 501, to control the liquid supplementing action of the power telescopic cylinder 501, and simultaneously linked with the control signal of the disinfectant supply pump 3 through the disinfectant-liquid supplementing interlocking module, to ensure the safety of system operation. Working principle: before using the inductive car antibacterial spraying device, it is necessary to check the overall condition of the device, to determine that it can work normally, to determine the working principle according to the working principle of the device, and to determine the working principle according to the working principle of the device. Figure 1 Figure 8 As shown in the standby state, the transmission spraying mechanism is accommodated in the support frame 2 under the contraction action of the main drive cylinder 201, the elastic sealing cover tightly fits the bottom opening of the support frame 2, to realize sealing protection; the disinfectant supply pump 3 and the power telescopic cylinder 501 are in the closed state; the human body sensor 701, the car height sensor and the liquid level monitor 401 collect data in real time and transmit the data to the controller 6. Disinfectant triggering and parameter matching: when the human body sensor 701 detects no one in the car for 3 times (each time interval is 10 s), the "no one signal" is sent to the controller 6; after receiving the signal, the controller 6 calls the net height data of the car detected by the car height sensor (assuming that the detected value is 2.3 m>2 m), according to the pre-stored "height-travel-rotation speed-flow rate" correlation data, determines the working parameters: the downward travel of the spraying connecting shaft 209 is 0.5 m, the rotation speed of the transmission roller 204 is 60 r / min, and the opening of the electromagnetic flow valve is 80% (the flow rate is 1.6 L / h). ​Disinfection operation: the controller 6 sends a signal to the electromagnetic valve of the main drive cylinder 201 to control the main drive cylinder 201 to extend and push the linkage sliding plate 202 to descend along the guide sliding groove of the support frame 2; during the descending process, the gear 205 rolls along the rack 206 to drive the transmission roller 204 to rotate, and through the meshing of the driving bevel gear 207 and the driven bevel gear 208, the spray connecting shaft 209 and the atomizing nozzle 211 are driven to rotate by 360 degrees; when the linkage sliding plate 202 descends to the set stroke (0.5 m), the main drive cylinder 201 stops working; at the same time, the controller 6 starts the liquid supply pump 3 and opens the electromagnetic flow valve, and the disinfectant in the liquid storage container 4 is pressurized by the liquid supply pump 3 and then delivered to the atomizing nozzle 211 through the liquid supply hose 212 and the water inlet hole 213 of the spray connecting shaft 209, and then uniformly sprayed into the car interior after atomization, and the disinfection operation lasts for 1 min (the conventional disinfection time, which can be set and adjusted by the controller 6). Disinfection operation interruption: if the human body sensor 701 detects a person in the car during disinfection, it immediately sends a "person signal" to the controller 6; after receiving the signal, the controller 6 immediately closes the liquid supply pump 3 and the electromagnetic flow valve, and controls the main drive cylinder 201 to contract to drive the transmission spray mechanism to rise and be stored until the elastic sealing cover is reset to avoid the impact of disinfectant on the human body. Disinfection operation end and reverse flushing: after the disinfection time reaches the set value, the controller 6 closes the liquid supply pump 3 and the electromagnetic flow valve, and controls the main drive cylinder 201 to contract to store the transmission spray mechanism inside the support frame 2; after the storage is completed, the controller 6 controls the liquid supply pump 3 to start in reverse for 30 seconds to use the reserved clean water in the liquid storage container 4 (or the clean water in a separate clean water tank) to perform reverse flushing on the water inlet hole 213 of the spray connecting shaft 209, and after the flushing is completed, the liquid supply pump 3 stops and the device returns to standby state. Automatic liquid supplementing process: in standby state, when the liquid level monitor 401 detects that the liquid level in the liquid storage container 4 is lower than the liquid supplementing threshold (such as 30% of the total volume) and the disinfection-liquid supplementing interlocking module confirms that the liquid supply pump 3 is closed (no disinfection operation), the controller 6 sends a signal to the power telescopic cylinder 501 to start the liquid supplementing operation; the power telescopic cylinder 501 drives the piston assembly 502 to move upwards to form negative pressure in the sealed power cylinder 5, and the external disinfectant overcomes the spring pre-tightening force of the liquid inlet passage 503 one-way valve to enter the sealed power cylinder 5 through the through hole 508 (liquid suction process, lasting 5 seconds); then, the power telescopic cylinder 501 pushes the piston assembly 502 to move downwards, the pressure in the sealed power cylinder 5 increases, and the liquid outlet passage 504 one-way valve opens, the disinfectant is pressed into the liquid storage container 4 through the flow guide elbow 505 (liquid discharge process, lasting 5 seconds); repeat the liquid suction-liquid discharge action until the liquid level monitor 401 detects that the liquid level reaches 80% of the full liquid level, and the controller 6 controls the power telescopic cylinder 501 to stop working, and the liquid supplementing operation is completed. Low liquid level emergency treatment: if the liquid level monitor 401 detects that the liquid level in the liquid storage container 4 is lower than the emergency threshold (10% of the total volume), and the human sensor 701 detects that no one needs to be disinfected, the controller 6 triggers the priority disinfection mode, controls the liquid supply pump 3 to run at the minimum flow rate (0.5 L / h) and the short stroke (0.2 m) of the spray connection shaft 209, and completes the disinfection operation; at the same time, the controller 6 controls the display screen in the car to display the prompt information "insufficient disinfectant, please replenish in time", and sends a reminder message to the property maintenance personnel's mobile phone through the communication module of the car, to ensure timely liquid replenishment.

[0028] Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can make modifications to the technical solutions described in the foregoing embodiments, or make equivalent replacements to part of the technical features, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. Induction type car antibacterial spray device, comprising a car body (1), a liquid storage container (4) and a liquid supply pump (3) arranged on the top of the car body (1), the input end of the liquid supply pump (3) is communicated with the liquid storage container (4), characterized in that, Also include: Lifting drive mechanism, fixedly arranged at the top of the car body (1), the lifting drive mechanism includes a support frame (2) and a main drive cylinder (201) fixed to the top end of the support frame (2), the bottom of the support frame (2) is provided with an elastic sealing cover, the inner side of the elastic sealing cover is provided with an annular cleaning cotton; Transmission spray mechanism, connected with the output end of the lifting drive mechanism, the transmission spray mechanism includes a linkage slide plate (202), a rotating shaft support (203), a transmission roller (204), a gear (205), a rack (206), a driving bevel gear (207), a driven bevel gear (208), a spray connecting shaft (209) and an atomizing nozzle (211), the linkage slide plate (202) is fixedly connected with the output end of the main drive cylinder (201) and can be driven by it to rise and fall along the height direction of the support frame (2), the rotating shaft support (203) is fixed to one side of the linkage slide plate (202), the transmission roller (204) is rotatably connected to the rotating shaft support (203), the gear (205) is fixed to the transmission roller (204), the rack (206) is fixed to the support frame (2) and meshes with the gear (205), the driving bevel gear (207) is fixed to one end of the transmission roller (204), the spray connecting shaft (209) is rotatably connected with the linkage slide plate (202) through a shaft sleeve support (210), the driven bevel gear (208) is fixed to the top end of the spray connecting shaft (209) and meshes with the driving bevel gear (207), the atomizing nozzle (211) is fixed to the bottom end of the spray connecting shaft (209), the spray connecting shaft (209) is communicated with the output end of the liquid supply pump (3) through a liquid supply hose (212), and the liquid supply hose (212) is provided with an electromagnetic flow valve; Induction control unit, including a controller (6), a human body sensor (701) and a car height sensor, the human body sensor (701) and the car height sensor are electrically connected with the controller (6), the human body sensor (701) is arranged inside the lampshade (7) at the top of the car, the human body sensor (701) is provided with a plurality of and is distributed at the top corner inside the car body (1), the controller (6) is electrically connected with the main drive cylinder (201), the liquid supply pump (3) and the electromagnetic flow valve, for controlling the lifting stroke of the lifting drive mechanism, the rotation speed of the transmission roller (204) and the opening degree of the electromagnetic flow valve according to the detection signals of the human body sensor (701) and the car height sensor. The automatic liquid supplementing system comprises a sealed power cylinder (5), a power telescopic cylinder (501) fixed to the top end of the sealed power cylinder (5), a piston assembly (502) connected to the output end of the power telescopic cylinder (501) and capable of sealingly sliding in the sealed power cylinder (5), a liquid inlet channel (503) and a liquid outlet channel (504) provided at the bottom end of the sealed power cylinder (5), wherein the liquid outlet channel (504) is communicated with a liquid storage container (4), and the liquid inlet channel (503) and the liquid outlet channel (504) are each provided with a one-way valve, a liquid level monitor (401) arranged in the liquid storage container (4) and electrically connected with a controller (6), and the controller (6) is electrically connected with the power telescopic cylinder (501) and internally provided with a disinfection-liquid supplementing interlocking module for locking the power telescopic cylinder (501) when a liquid supply pump (3) is started and adjusting the telescopic speed of the power telescopic cylinder (501) according to the liquid level information detected by the liquid level monitor (401).

2. The inductive car anti-bacterial spray device of claim 1, wherein: The spray connecting shaft (209) is internally provided with a water inlet hole (213), one end of a liquid supply hose (212) is rotatably connected with the top end of the spray connecting shaft (209) and communicated with the water inlet hole (213), and the other end of the liquid supply hose (212) is fixedly connected with the output end of the liquid supply pump (3) after penetrating through the support frame (2).

3. The inductive car anti-bacterial spray device of claim 1, wherein: The one-way valve comprises a stop block (506), a spring (507) and a through hole (508), the stop block (506) is slidingly arranged at the end of the liquid inlet channel (503) for closing the liquid inlet of the liquid inlet channel (503), the spring (507) is arranged in the liquid inlet channel (503), one end of the spring (507) is connected with the inner wall of the liquid inlet channel (503), the other end of the spring (507) is connected with the stop block (506) for providing the stop block (506) with a pre-tightening force towards the liquid inlet, and the through hole (508) is arranged in the side wall of the stop block (506).

4. The inductive car anti-bacterial spray device of claim 1, wherein: The automatic liquid supplementing system further comprises a flow guide elbow (505) connected between the liquid outlet channel (504) and the liquid storage container (4).

5. The inductive car anti-bacterial spray device of claim 1, wherein: The controller (6) is pre-stored with "height-travel-rotation speed-flow rate" correlation data, when the car height sensor detects that the net height in the car is ≤2 m, the descending travel of the spray connecting shaft (209) is controlled to be 0.3 m, the rotation speed of the transmission roller (204) is controlled to be 30 r / min, and the opening degree of the electromagnetic flow valve is controlled to be 50%; when the net height in the car is >2 m, the descending travel of the spray connecting shaft (209) is controlled to be 0.5 m, the rotation speed of the transmission roller (204) is controlled to be 60 r / min, and the opening degree of the electromagnetic flow valve is controlled to be 80%.

6. The inductive car anti-bacterial spray device of claim 1, wherein: When the human sensor (701) detects no one in the elevator cabin for three times in succession, the controller (6) controls the transmission spray mechanism to enter the strengthening mode, increases the rotating speed of the transmission roller (204) to 80 r / min, and adjusts the electromagnetic flow valve to the fully open state.

7. The inductive car anti-bacterial spray device of claim 1, wherein: If the liquid level monitor (401) detects that the liquid level in the liquid storage container (4) is below the emergency threshold, and the human sensor (701) detects that there is no one in the elevator cabin and disinfection is required to be started, the controller (6) triggers the priority disinfection mode, and controls the display screen in the elevator cabin to prompt the information that the disinfectant needs to be supplemented.

8. The inductive car anti-bacterial spray device of claim 1, wherein: The liquid level monitor (401) is used to detect the difference ΔH between the current liquid level and the full liquid level in the liquid storage container (4) in real time, when ΔH>50%, the controller (6) controls the extension and retraction speed of the power telescopic cylinder (501) to be 10 mm / s; when ΔH≤20%, the extension and retraction speed of the power telescopic cylinder (501) is controlled to be 3 mm / s.

9. The inductive car anti-bacterial spray device of claim 1, wherein: The material of the elastic sealing cover is silica gel, and the edge thereof is elastically connected with the bottom of the support frame (2) through a spring (507).

10. The inductive car anti-bacterial spray device of claim 2, wherein: The controller (6) is configured to control the liquid supply pump (3) to start for a preset time period after the rising storage of the spray connecting shaft (209) is completed, so as to perform reverse flushing on the water inlet hole (213) inside the spray connecting shaft (209).

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