Air shower delivery window with automatic lifting door

Abstract

The invention discloses an air shower delivery window with an automatic lifting door. The double-lifting air shower mainly comprises a shell, a double-lifting assembly, an air shower delivery window and the like. The double-lifting assembly is symmetrically arranged in the shell and comprises a motor, a synchronous wheel and other parts which cooperate to enable the air shower delivery window to lift stably. An infrared induction assembly of the conveying device controls lifting according to the positions of objects, and automatic operation is achieved. The air shower assembly purifies objects through a fan and the like. The controller is connected with the motor, locked-rotor current can be sensed and adjusted, stability and anti-pinch are guaranteed, and a 485 communication function supports remote monitoring operation. The problems that manual operation is complex, noise is large, and anti-pinch is not stable are solved, goods can be automatically sensed, noise is lowered, stability and anti-pinch are achieved, and remote control can be achieved. The system is suitable for cleaning workshops and other places, effectively improves the article transfer efficiency and safety, and provides an efficient, intelligent and safe solution for article transfer in a clean environment.

Description

Technical Field

[0001] The invention belongs to the field of automatic lifting door air shower transfer window equipment, and in particular relates to an automatic lifting door air shower transfer window. Background Art

[0002] In cleanrooms and other places with high requirements for environmental cleanliness, the automatic lifting door air shower transfer window is an important device. Its main function is to reduce the contamination of dust, bacteria and other microorganisms during the delivery of items, and to blow clean air through the air shower system to remove attached dust and microorganisms.

[0003] The existing automatic lifting door air shower transfer window usually includes the transfer window box, control system, air shower system and other parts. The box is composed of side panels and bottom panels. The air shower system includes fans, static pressure boxes, high-efficiency filters, nozzles and other components. The internal air is circulated and sprayed out from the nozzle after primary and high-efficiency filtration to achieve a cleaning effect. It is mostly made of 304 stainless steel plates. The two side doors are equipped with electronic interlocking devices to ensure that the two side doors cannot be opened at the same time during operation. The internal interlocking is achieved through integrated circuits, electromagnetic locks, control panels, indicator lights, etc.

[0004] However, the current automatic lift door air shower transfer window has many shortcomings. In terms of operation, the operator needs to manually operate the door to open and close and place items, which makes it difficult for the operator to work for a long time in high or low temperature environments, reduces work efficiency, and has high labor intensity. In the operation of the lift door, its slide rails are mostly ball slide rails, which make a lot of noise when the door is raised and lowered, affecting the working environment; at the same time, the infrared sensor installed to achieve the anti-pinch function has a limited position, and there are positions that cannot be sensed, resulting in unstable anti-pinch function, which is easy to cause damage to goods and personnel. Summary of the invention

[0005] The purpose of the present invention is to provide an automatic lifting door air shower transfer window, aiming to solve the problems existing in the above-mentioned background technology. To achieve the above-mentioned purpose, the technical solution adopted by the present invention is:

[0006] An automatic lifting door air shower transfer window comprises a shell, a first lifting assembly, a second lifting assembly, an air shower transfer window, a conveying device, an infrared sensing assembly and an air shower assembly. The first lifting assembly, the second lifting assembly, the air shower transfer window and the air shower assembly are all mounted on the shell assembly. The conveying device is mounted with an infrared sensing assembly. The first lifting assembly and the second lifting assembly are mounted inside the shell. The first lifting assembly and the second lifting assembly are symmetrically distributed. The air shower transfer window is mounted on the shell through the first lifting assembly and the second lifting assembly. The shell is mounted with an air shower assembly. The air shower assembly is used for air showering articles. A conveying device is mounted below the air shower assembly. The conveying device transports the articles to the bottom of the air shower assembly. The first lifting assembly and the second lifting assembly lift the air shower transfer window by receiving signals from the infrared sensing assembly on the conveying device.

[0007] Preferably, the first lifting assembly includes a lifting door motor, a limit switch, a first linear slide rail, a first slider, a tensioning wheel, a first belt pressure block, a first belt, a first synchronous wheel, a limit switch bracket and a limit plate. The first synchronous wheel is installed on the right head of the shell, and the first tensioning wheel is installed on the right middle part of the shell. A belt is sleeved on the outer side of the first synchronous wheel and the tensioning wheel, a limit switch bracket is installed below the first synchronous wheel and above the tensioning wheel, and a limit switch is installed on the limit switch bracket. The lifting door motor is installed on the side of the first synchronous wheel, the first linear guide rail is installed on the inner side of the first belt, and the first slider is arranged on the first linear guide. The limit switch assembly is provided with a first belt pressure block, and the first belt pressure block is connected to the right side of the air shower transfer window.

[0008] Preferably, the second lifting assembly includes a second synchronous wheel, a second belt, a linear bearing, an optical axis, a second belt pressure block, a second linear guide and a second slider. The second synchronous wheel is installed on the left head of the shell, and the linear bearing is installed in the middle of the shell. A second belt is arranged on the outside of the second synchronous wheel and the linear bearing, and the bottom of the linear bearing is connected to the optical axis. A second belt pressure block is installed on the belt, and the second belt pressure block is connected to the left side of the air shower transfer window. A second linear guide is arranged on the inner side of the second belt, and a second slider is arranged on the second linear guide. The air shower transfer window is installed on the first linear guide and the second linear guide through the first slider and the second slider.

[0009] Preferably, the optical axis is a counterweight column, the optical axis has the same weight as the air shower transfer window, and the optical axis is used to prevent the air shower transfer window from tilting.

[0010] Preferably, a limiting plate is provided on the right side of the air shower transfer window.

[0011] Preferably, the infrared sensing assembly comprises a first infrared sensor, a second infrared sensor and a third infrared sensor, and the first infrared sensor, the second infrared sensor and the third infrared sensor are respectively installed at the head, the middle and the tail of the conveying device.

[0012] Preferably, the air shower assembly includes a fan, an air duct, a static pressure box, a high-efficiency filter, a nozzle and a primary filter. The fan is installed at the tail of the shell assembly, the static pressure box is installed at the head of the shell, the high-efficiency filter is installed at the bottom of the static pressure box, the nozzle is installed below the high-efficiency filter, the primary filter is installed below the nozzle, and the fan is connected to the static pressure box through the air duct.

[0013] Preferably, a controller is also provided on the outside of the shell, and the controller is electrically connected to the lifting door motor. The controller senses the stall current of the lifting door motor. The controller is used to set and adjust the stall current of the motor. When the stall current of the motor is greater than the set value, the motor reverses according to the current operating state to make the anti-pinch function more stable.

[0014] Preferably, the controller has a 485 communication function, which is used for remote monitoring and operation of the lifting door air shower transfer window.

[0015] Beneficial effects of the present invention:

[0016] Improve work efficiency: By adding a conveyor belt with an infrared sensor inside the automatic door transfer window, it can automatically sense the status of the goods and replace manual operation to achieve automatic lifting of the door, thereby reducing manual operation time, making the goods transfer more rhythmic and significantly improving work efficiency.

[0017] Reduce noise and extend component life: Replace the lifting slide rail of the lifting door from a ball bearing slide rail to a linear silent slide rail. The linear slide rail is stronger and not easy to deform. It can not only reduce the noise generated by the lifting door and improve the working environment, but also increase the smoothness of the lifting door operation. At the same time, it can extend the service life of the pulley and reduce equipment maintenance costs.

[0018] Enhance the stability of the anti-pinch function: Replace the controller of the lifting motor. The new controller can sense the motor's stall current and set the motor's stall current. When the motor's stall current is greater than the set value, the motor can reverse according to the current operating state, making the anti-pinch function more stable and reliable, effectively reducing the risk of damage to goods and personnel, and improving the safety of equipment use.

[0019] Realize remote monitoring and operation: Add 485 communication function, so that the equipment can be remotely monitored and the lifting door air shower transfer window can be operated, which is convenient for operators to control and manage the equipment at different locations, improves the convenience and flexibility of equipment use, and adapts to the needs of modern intelligent production management.

[0020] Optimize belt working performance: Add a tension pulley to the belt to adjust the belt tension, making the belt more stable during operation, effectively preventing the belt from derailing the synchronous pulley, reducing the occurrence rate of equipment failure, and at the same time increasing the service life of the belt, reducing equipment operating costs, and ensuring long-term and stable operation of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 An overall schematic diagram provided for an embodiment of the present invention;

[0022] Figure 2 A schematic diagram of the overall local structure provided by an embodiment of the present invention;

[0023] Figure 3 A schematic diagram of the structure of a first lifting assembly and a second lifting assembly provided in an embodiment of the present invention;

[0024] Figure 4 It is a schematic diagram of the infrared sensing component and the air shower structure of an embodiment of the present invention.

[0025] Among them, the reference numerals in the figure are:

[0026] 1. Shell; 2. First lifting assembly; 201. Lifting door motor; 202. Limit switch; 203. First linear guide rail; 204. First slider; 205. Tensioning wheel; 206. First belt pressure block; 207. First belt; 208. First synchronous wheel; 209. Limit switch bracket; 3. Second lifting assembly; 301. Second synchronous wheel; 302. Second belt; 303. Linear bearing; 304. Optical axis; 305. Second belt pressure block; 306. Second linear guide rail; 307. Second slider; 4. Air shower transfer window; 5. Conveying device; 6. Infrared sensing assembly; 61. First infrared sensor; 62. Second infrared sensor; 63. Third infrared sensor; 7. Air shower assembly; 71. Fan; 72. Air duct; 73. Static pressure box; 74. High efficiency filter; 75. Nozzle; 76. Primary filter; 8. Limit plate. DETAILED DESCRIPTION

[0027] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly understood.

[0028] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may also be a centered element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be a centered element at the same time. On the contrary, when an element is referred to as being "directly on" another element, there is no intermediate element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method. The terms "upper end", "lower end", "left side", "right side", "front end", "rear end" and similar expressions used herein are positional relationships with reference to the accompanying drawings.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0030] The technical solution of this patent is further described in detail below in conjunction with specific implementation methods.

[0031] like Figures 1 to 4 As shown, an embodiment of the present invention provides an automatic lifting door air shower transfer window 4, comprising a shell 1, a first lifting component 2, a second lifting component 3, an air shower transfer window 4, a conveying device 5, an infrared sensing component 6 and an air shower component 7, the first lifting component 2, the second lifting component 3, the air shower transfer window 4 and the air shower component 7 are all installed on the shell 1 component, the conveying device 5 is installed with an infrared sensing component 6, the first lifting component 2 and the second lifting component 3 are installed inside the shell 1, the first lifting component 2 and the second lifting component 3 are symmetrically distributed, the air shower transfer window 4 is installed on the shell 1 through the first lifting component 2 and the second lifting component 3, the shell 1 is installed with an air shower component 7, the air shower component 7 is used for air showering of articles, the conveying device 5 is installed below the air shower component 7, the conveying device 5 transports the articles to the bottom of the air shower component 7, the first lifting component 2 and the second lifting component 3 lift the air shower transfer window 4 by receiving the signal of the infrared sensing component 6 on the conveying device 5.

[0032] In the embodiment, the first lifting assembly 2 includes a lifting door motor 201, a limit switch 202, a first linear slide rail 203, a first slider 204, a tensioning wheel 205, a first belt pressure block 206, a first belt 207, a first synchronous wheel 208, a limit switch bracket 209 and a limit plate 8. The first synchronous wheel 208 is installed on the right head of the housing 1, and the first tensioning wheel 205 is installed in the middle of the right side of the housing 1. The outer sides of the first synchronous wheel 208 and the tensioning wheel 205 are covered with belts. A limit switch bracket 209 is installed below the synchronous wheel 208 and above the tensioning wheel 205, and a limit switch 202 is installed on the limit switch bracket 209. A lifting door motor 201 is installed on the side of the first synchronous wheel 208, a first linear guide rail 203 is installed on the inner side of the first belt 207, and a first slider 204 is arranged on the first linear guide rail 203. The limit switch 202 assembly is provided with a first belt pressure block 206, and the first belt pressure block 206 is connected to the right side of the air shower transfer window 4.

[0033] In the embodiment, the second lifting assembly 3 includes a second synchronous wheel 301, a second belt 302, a linear bearing 303, an optical axis 304, a second belt pressure block 305, a second linear slide rail 306 and a second slider 307. The second synchronous wheel 301 is installed on the left head of the shell 1, and the linear bearing 303 is installed in the middle of the shell 1. The second belt 302 is arranged on the outside of the second synchronous wheel 301 and the linear bearing 303, and the bottom of the linear bearing 303 is connected to the optical axis 304. The second belt pressure block 305 is installed on the belt, and the second belt pressure block 305 is connected to the left side of the air shower transfer window 4. The second linear slide rail 306 is arranged on the inner side of the second belt 302, and the second slider 307 is arranged on the second linear slide rail 306. The air shower transfer window 4 is installed on the first linear slide rail 203 and the second linear slide rail 306 through the first slider 204 and the second slider 307.

[0034] In the embodiment, the optical axis 304 is a counterweight column, the optical axis 304 and the air shower transfer window 4 have the same weight, and the optical axis 304 is used to prevent the air shower transfer window 4 from tilting.

[0035] In the embodiment, a limiting plate 8 is provided on the right side of the air shower transfer window 4 .

[0036] In the embodiment, the infrared sensor assembly 6 includes a first infrared sensor 61 , a second infrared sensor 62 and a third infrared sensor 63 , and the first infrared sensor 61 , the second infrared sensor 62 and the third infrared sensor 63 are respectively installed at the head, the middle and the tail of the conveying device 5 .

[0037] In the embodiment, the air shower assembly 7 includes a fan 71, an air duct 72, a static pressure box 73, a high-efficiency filter 74, a nozzle 75 and a primary filter 76. The fan 71 is installed at the tail of the shell assembly, the static pressure box 73 is installed at the head of the shell 1, the high-efficiency filter 74 is installed at the bottom of the static pressure box 73, the nozzle 75 is installed below the high-efficiency filter 74, and the primary filter 76 is installed below the nozzle 75. The fan 71 is connected to the static pressure box 73 through the air duct 72.

[0038] In the embodiment, a controller is also provided on the outside of the shell 1, and the controller is electrically connected to the lifting door motor 201. The controller senses the stall current of the lifting door motor 201. The controller is used to set and adjust the stall current of the motor. When the stall current of the motor is greater than the set value, the motor reverses according to the current operating state to make the anti-pinch function more stable.

[0039] In the embodiment, the controller has a 485 communication function, and the 485 communication function is used for remote monitoring and operating the lifting door air shower transfer window 4.

[0040] How it works

[0041] Overall structure and layout of equipment

[0042] The automatic lifting door air shower transfer window is mainly composed of a shell 1, a first lifting component 2, a second lifting component 3, an air shower transfer window 4, a conveying device 5, an infrared sensing component 6, an air shower component 7 and a controller. The shell 1 serves as an overall frame and provides a mounting base for other components. The first lifting component 2 and the second lifting component 3 are symmetrically mounted inside the shell 1, and the two work together to achieve the smooth lifting and lowering of the air shower transfer window 4. The air shower transfer window 4 slides on the first linear slide 203 and the second linear slide 306 through the first slider 204 and the second slider 307, respectively, to ensure that the lifting process is stable and smooth. The conveying device 5 is located below the air shower component 7 and is responsible for transporting the items to the air shower position. The infrared sensing component 6 installed thereon is used to detect the position and state of the items. The air shower component 7 is used to purify the items with air shower. The airflow generated by the fan 71 enters the static pressure box 73 through the air duct 72, and after being filtered by the high-efficiency filter 74, it is ejected at high speed through the nozzle 75 to clean the items. The primary filter 76 performs preliminary filtration on the circulating air to ensure the cleanliness of the air in the air shower system. The controller is installed on the outside of the shell 1 and is electrically connected to the lifting door motor 201. It can not only sense the motor stall current, but also has a 485 communication function to achieve remote monitoring and operation.

[0043] Working principle of lifting assembly

[0044] In the first lifting assembly 2, the lifting door motor 201 is installed on the right head of the shell 1 as a power source to drive the first synchronous wheel 208 to rotate. The first synchronous wheel 208 and the tensioning wheel 205 in the middle are connected by the first belt 207 to form a transmission system. The first linear slide rail 203 is installed on the inner side of the first belt 207, and the first slider 204 drives the right side of the air shower transfer window 4 to rise and fall on the slide rail as the belt moves. The limit switch 202 on the limit switch bracket 209 is used to control the lifting stroke of the air shower transfer window 4. When the limit plate 8 on the right side of the air shower transfer window 4 hits the limit switch 202, the lifting door motor 201 stops working to ensure that the air shower transfer window 4 stops accurately at the predetermined position.

[0045] The second lifting assembly 3 works in coordination with the first lifting assembly 2. The second synchronous wheel 301 is installed on the left head of the housing 1 and is connected to the linear bearing 303 through the second belt 302. The optical axis 304 connected to the bottom of the linear bearing 303 serves as a counterweight column, and its weight is equal to that of the air shower transfer window 4, which can effectively prevent the air shower transfer window 4 from tilting during the lifting process. The second belt pressure block 305 on the belt is connected to the left side of the air shower transfer window 4, and the second slider 307 on the second linear slide rail 306 assists the left side of the air shower transfer window 4 to lift and lower smoothly, ensuring the stability and parallelism of the overall lifting of the air shower transfer window 4.

[0046] Infrared sensing and automatic control principle

[0047] The first infrared sensor 61, the second infrared sensor 62 and the third infrared sensor 63 of the infrared sensing assembly 6 are respectively installed at the head, middle and tail of the conveying device 5, forming a comprehensive detection area for the conveyed items. When the item is placed on the conveying device 5 and transported from left to right, it first passes through the first infrared sensor 61. At this time, the infrared sensing assembly 6 starts to work and sends a signal to the first lifting assembly 2 and the second lifting assembly 3. The lifting door motor 201 starts after receiving the signal, driving the air shower transfer window 4 to automatically open the door and rise. As the item continues to move, when passing the second infrared sensor 62, the system further confirms the position of the item. If the item is in the air shower transfer window 4 and meets other preset conditions (such as the door has been closed in place, etc.), the fan 71 of the air shower assembly 7 can be ready to start. When the item passes the third infrared sensor 63, some subsequent operations can be triggered (such as starting or stopping the conveying device 5, etc., according to the specific program settings). In the whole process, the infrared sensing assembly 6 realizes the accurate detection of the position of the item, thereby automatically controlling the coordinated work of the air shower transfer window 4 and the conveying device 5 and other components, and realizing the automated operation process.

[0048] Working principle of air shower assembly

[0049] After the fan 71 is started, it sucks in the outside air and transports the air to the static pressure box 73 through the air duct 72. The function of the static pressure box 73 is to evenly distribute the airflow, and then the air is filtered by the high-efficiency filter 74 to remove impurities such as tiny dust particles and microorganisms to form clean air. The clean air is ejected at high speed through the nozzle 75, and the items placed in the air shower transfer window 4 are blown in all directions to blow off the dust particles and microorganisms attached to the surface of the items. The air containing floating dust naturally settles in the air shower transfer window 4 or is initially filtered by the primary filter 76 below under the suction of the fan 71. The filtered air can enter the fan 71 again for recycling, which improves the energy utilization rate and ensures the continuous cleanliness of the air during the air shower process.

[0050] Anti-pinch function principle

[0051] The controller senses the stall current of the lifting door motor 201 in real time. During the lifting process of the air shower transfer window 4, if a foreign object (such as an object or a person's limb) blocks the movement of the air shower transfer window 4, the load of the lifting door motor 201 will suddenly increase, and the stall current will increase accordingly. When the stall current is greater than the threshold set in the controller, the controller reverses the motor 201 according to the current operating state according to a pre-set program. For example, if the motor 201 is driving the air shower transfer window 4 to rise in the forward direction, when an abnormal increase in the stall current is detected, the motor 201 immediately reverses to make the air shower transfer window 4 drop a certain distance, thereby avoiding pinching of foreign objects and achieving a stable and reliable anti-pinch function.

[0052] Remote monitoring and operation principle

[0053] The 485 communication function of the controller allows the connection to be established with the automatic lifting door air shower transfer window through external devices (such as computers, smart terminals, etc.). Users can obtain real-time operating status information of the equipment, such as the position of the lifting door, the working status of the fan 71, the triggering status of the infrared sensor, etc., through the corresponding monitoring software or application at a remote location. At the same time, users can also operate the equipment remotely, such as remotely controlling the switch of the lifting door, starting or stopping the fan 71, and adjusting parameters such as the air shower time. This remote monitoring and operation function facilitates the management and maintenance of the equipment and improves work efficiency. It is especially suitable for centralized management scenarios of multiple equipment in large purification workshops or clean rooms. Operators can fully control and manage the equipment without being on site.

[0054] The above implementation modes are only used to illustrate the present invention, but not to limit the present invention. Ordinary technicians in the relevant technical field can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions also belong to the scope of the present invention. The patent protection scope of the present invention should be defined by the claims.

Claims

1. An automatic lifting door air shower transfer window, characterized in that: The invention comprises a shell, a first lifting component, a second lifting component, an air shower transfer window, a conveying device, an infrared sensing component and an air shower component. The first lifting component, the second lifting component, the air shower transfer window and the air shower component are all installed on the shell component. The infrared sensing component is installed on the conveying device. The first lifting component and the second lifting component are installed inside the shell. The first lifting component and the second lifting component are symmetrically distributed. The air shower transfer window is installed on the shell through the first lifting component and the second lifting component. The air shower component is installed inside the shell. The air shower component is used for air showering articles. The conveying device is installed below the air shower component. The conveying device transports articles to the bottom of the air shower component. The first lifting component and the second lifting component raise and lower the air shower transfer window by receiving signals from the infrared sensing component on the conveying device.

2. The automatic lifting door air shower transfer window according to claim 1, characterized in that: The first lifting assembly includes a lifting door motor, a limit switch, a first linear slide rail, a first slider, a tensioning wheel, a first belt pressure block, a first belt, a first synchronous wheel, a limit switch bracket and a limit plate, wherein the first synchronous wheel is installed on the right head portion of the shell, the first tensioning wheel is installed on the right middle portion of the shell, the belt is sleeved on the outer sides of the first synchronous wheel and the tensioning wheel, the limit switch bracket is installed below the first synchronous wheel and above the tensioning wheel, the limit switch is installed on the limit switch bracket, the lifting door motor is installed on the side of the first synchronous wheel, the first linear guide rail is installed on the inner side of the first belt, the first slider is provided on the first linear guide rail, the limit switch assembly is provided with the first belt pressure block, and the first belt pressure block is connected to the right side of the air shower transfer window.

3. The automatic lifting door air shower transfer window according to claim 2, characterized in that: The second lifting assembly includes a second synchronous wheel, a second belt, a linear bearing, an optical axis, a second belt pressure block, a second linear guide and a second slider. The second synchronous wheel is installed on the left head of the shell, and the linear bearing is installed in the middle of the shell. The second belt is arranged on the outer side of the second synchronous wheel and the linear bearing, and the bottom of the linear bearing is connected to the optical axis. The second belt pressure block is installed on the belt, and the second belt pressure block is connected to the left side of the air shower transfer window. The second linear guide is arranged on the inner side of the second belt, and the second slider is arranged on the second linear guide. The air shower transfer window is installed on the first linear guide and the second linear guide through the first slider and the second slider.

4. The automatic lifting door air shower transfer window according to claim 3, characterized in that: The optical axis is a counterweight column, the optical axis has the same weight as the air shower transfer window, and the optical axis is used to prevent the air shower transfer window from tilting.

5. The automatic lifting door air shower transfer window according to claim 4, characterized in that: A limiting plate is arranged on the right side of the air shower transfer window.

6. The automatic lifting door air shower transfer window according to claim 5, characterized in that: The infrared sensor assembly comprises a first infrared sensor, a second infrared sensor and a third infrared sensor, and the first infrared sensor, the second infrared sensor and the third infrared sensor are respectively installed at the head, the middle and the tail of the conveying device.

7. The automatic lifting door air shower transfer window according to claim 5 or 6, characterized in that: The air shower assembly includes a fan, an air duct, a static pressure box, a high-efficiency filter, a nozzle and a primary filter. The fan is installed at the tail of the shell assembly, the static pressure box is installed at the head of the shell, the high-efficiency filter is installed at the bottom of the static pressure box, the nozzle is installed below the high-efficiency filter, the primary filter is installed below the nozzle, and the fan is connected to the static pressure box through an air duct.

8. The automatic lifting door air shower transfer window according to claim 5 or 6, characterized in that: A controller is also provided on the outside of the shell, and the controller is electrically connected to the lifting door motor. The controller senses the stall current of the lifting door motor. The controller is used to set and adjust the stall current of the motor. When the stall current of the motor is greater than the set value, the motor reverses according to the current operating state to make the anti-pinch function more stable.

9. The automatic lifting door air shower transfer window according to claim 5 or 6, characterized in that: The controller has a 485 communication function, and the 485 communication function is used for remote monitoring and operation of the lifting door air shower transfer window.

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