Clean sampling vehicle and air shower linkage structure

Abstract

The utility model discloses a linkage structure for clean sampling car and air shower, relate to the technical field of clean equipment, this structure includes clean sampling car, air shower and linkage control component, and linkage control component realizes the automatic control of main control unit to air shower door body and air shower device through the wireless communication of first signal module and second signal module, when clean sampling car needs to enter air shower, and first signal module sends state signal, and main control unit controls entry door to open after receiving, and air shower device is started automatically in the air shower process, and opens exit door after completion, realizes the intelligent linkage of sampling car and air shower, the utility model solves the problem that the low efficiency, the instability of the cleanliness control of traditional manual operation air shower, through the automatic linkage, improves the coherence and reliability of clean area sampling, reduces the pollution risk of human intervention.

Description

Technical Field

[0001] This utility model belongs to the technical field of cleanroom equipment, and relates to a linkage structure for clean sampling cart and air shower. Background Technology

[0002] In industries with extremely high cleanliness requirements, such as pharmaceuticals, food, and electronics, clean sampling vehicles are often used for sample collection in clean areas. Air showers, as purification equipment before personnel or equipment enter the clean area, need to remove dust particles attached to the surface through high-speed airflow. Currently, when a clean sampling vehicle enters an air shower, it usually requires manual operation of the air shower door and the start of the air shower program. This is cumbersome and time-consuming. Furthermore, manual control can easily lead to situations such as the door not closing in time or insufficient air shower time, affecting the cleaning effect and sampling efficiency. Therefore, in order to solve the above-mentioned technical problems, the technical solution of this application is proposed. Summary of the Invention

[0003] The purpose of this invention is to provide a linkage structure between a clean sampling vehicle and an air shower, thereby solving the aforementioned technical problems.

[0004] The technical solution adopted in this utility model is as follows: The linkage structure for clean sampling vehicle and air shower includes a clean sampling vehicle, an air shower and a linkage control component, which is electrically connected to the clean sampling vehicle and the air shower respectively. The clean sampling vehicle is equipped with wheels at the bottom, a HEPA filter at the top, and sampling windows on the sides; The air shower room includes an entrance door, an exit door, an air shower device, and a cavity. The entrance door and the exit door are respectively located at both ends of the cavity. The linkage control component includes a first signal module installed on the clean sampling vehicle, a second signal module installed at the entrance of the air shower room, and a main controller. The first signal module and the second signal module are wirelessly connected, and the main controller is electrically connected to the second signal module, the entrance door drive mechanism, the exit door drive mechanism, and the air shower device, respectively. The main controller can control the entrance door drive mechanism to open or close the entrance door according to the clean sampling vehicle status signal sent by the first signal module, and control the air shower device to start or stop the air shower operation. After the air shower operation is completed, it controls the exit door drive mechanism to open the exit door.

[0005] The working principle of this utility model is as follows: the bottom of the clean sampling vehicle is equipped with a set of movable wheels for easy and flexible movement, the top is equipped with a HEPA filter to maintain a local clean environment, and the side is equipped with a sampling window for operation; the air shower room includes an entrance door, an exit door, an air shower device and a cavity, with the entrance door and the exit door respectively located at both ends of the cavity to achieve isolation of the entry and exit channels.

[0006] The linkage control component is the core part, including a first signal module, a second signal module, and a main controller. The first signal module is installed on the clean sampling vehicle, and the second signal module is installed at the entrance of the air shower room. The two communicate wirelessly. The main controller is electrically connected to the second signal module, the entrance door drive mechanism, the exit door drive mechanism, and the air shower device, serving as the control center.

[0007] When the clean sampling vehicle needs to enter the air shower, the first signal module sends an entry signal. After the main controller receives the signal through the second signal module, if the air shower is idle, it controls the entrance door drive mechanism to open the entrance door. After the sampling vehicle enters the chamber, the main controller controls the entrance door to close and starts the air shower. After the air shower is completed, the main controller controls the exit door drive mechanism to open the exit door, allowing the sampling vehicle to leave. The whole process does not require manual intervention and achieves automated linkage.

[0008] The linkage between the clean sampling vehicle and the air shower is based on signal transmission and logic control. The specific working principle is as follows: When the clean sampling vehicle needs to enter the air shower, its first signal module sends an entry signal and a real-time position signal to the second signal module of the air shower. The second signal module transmits the received signal to the main controller, which determines whether the air shower is in an idle state (i.e., the cavity is empty and both the entrance and exit doors are closed). If the air shower room is not in use, the main controller sends an opening command to the entrance door drive mechanism, the entrance door opens, and at the same time, the second signal module sends an entry permission signal back to the first signal module. After the clean sampling vehicle enters the air shower chamber, the first signal module sends a position signal, the main controller controls the entrance door drive mechanism to close the entrance door, and starts the air shower device to begin the air shower operation; After the air shower device has been running for a preset time, the main controller stops it and sends an opening command to the exit door drive mechanism, and the exit door opens. After the clean sampling vehicle leaves the cavity, the infrared sensor inside the cavity detects that there is no object. The main controller controls the exit door drive mechanism to close the exit door and sends an air shower completion signal to the first signal module through the second signal module, thus ending the linkage process.

[0009] Furthermore, the first signal module includes a position sensor and a status transmitter. The position sensor detects the distance signal between the clean sampling vehicle and the air shower entrance, while the status transmitter transmits the distance signal and the clean sampling vehicle's operational status signal, including a "waiting to enter" signal and a "sampling completed" signal. This further clarifies the composition and function of the first signal module. The position sensor enables real-time monitoring of the distance between the clean sampling vehicle and the air shower entrance, providing accurate data support for determining whether the sampling vehicle has reached a position suitable for entering the air shower. The status transmitter is responsible for transmitting the distance signal and the sampling vehicle's operational status signals ("waiting to enter" and "sampling completed") outwards. The "waiting to enter" signal triggers a series of preparatory actions, such as opening the air shower entrance door, while the "sampling completed" signal informs relevant components of the air shower of the sampling vehicle's progress, facilitating subsequent coordination. The cooperation of these two components ensures that the clean sampling vehicle's status information is transmitted to the relevant modules of the air shower in a timely and accurate manner.

[0010] Furthermore, the second signal module includes a signal receiver and a feedback transmitter. The signal receiver receives distance and operational status signals from the first signal module, and the feedback transmitter sends air shower status signals to the first signal module. These air shower status signals include idle, in-flight, and fault signals. The composition and function of the second signal module are explained in detail. The signal receiver is specifically designed to receive distance and operational status signals from the first signal module and is a key component for the air shower to obtain information about the clean sampling vehicle, ensuring that the air shower can promptly know the dynamics of the sampling vehicle. The feedback transmitter is responsible for sending air shower status signals (idle, in-flight, and fault signals) to the first signal module. An idle signal indicates that the air shower can accept the sampling vehicle, an in-flight signal indicates that the sampling vehicle needs to wait, and a fault signal allows the sampling vehicle operator to promptly understand any abnormalities in the air shower and facilitate timely handling. Through this signal interaction, information exchange between the clean sampling vehicle and the air shower is achieved, ensuring the orderly operation of the linkage process.

[0011] Furthermore, the main controller is connected to a timing module, which is used to set the air shower duration. When the air shower is started, the timing module begins timing, and when the preset duration is reached, the main controller stops the air shower. The timing module connected to the main controller has been described. The core function of the timing module is to set the air shower duration, which is a crucial parameter for ensuring the effectiveness of the air shower. Different cleanliness requirements may require different air shower durations, and the timing module allows the air shower duration to be set according to actual needs. When the air shower is started, the timing module begins timing, and when the preset duration is reached, it sends a signal to the main controller, which then stops the air shower, ensuring accurate and controllable air shower time and preventing insufficient air shower time from affecting the cleanliness effect or excessive air shower time from wasting energy.

[0012] Furthermore: Both the entrance and exit doors are automatic sliding doors. The drive mechanisms for both doors include a servo motor, a transmission gear, and a rack. The servo motor is electrically connected to the main controller, and its output shaft is fixedly connected to the transmission gear. The rack is fixed to the bottom of the entrance / exit door and meshes with the transmission gear. This clarifies the type of the entrance and exit doors and the composition of their drive mechanisms. The entrance and exit doors are automatic sliding doors. Compared to other types of doors, automatic sliding doors have advantages such as smooth opening and closing processes and small space occupation, making them suitable for use in specific environments such as air showers. Both the entrance and exit door drive mechanisms consist of a servo motor, a transmission gear, and a rack. The servo motor features high control precision and fast response speed. Its output shaft is fixedly connected to the transmission gear. Through the meshing of the gear with the rack fixed to the bottom of the door, the rotational motion of the servo motor is converted into the translational motion of the door, thereby achieving precise opening and closing of the door and ensuring the reliability and accuracy of the door's operation.

[0013] Furthermore, the clean sampling vehicle is also equipped with a control panel, which is electrically connected to the first signal module. The control panel has a start button, an emergency stop button, and status indicator lights. The status indicator lights are used to display the status signals fed back by the air shower. The control panel and its functions on the clean sampling vehicle are described. The control panel, electrically connected to the first signal module, is an important interface for operators to interact with the linkage structure. The start button can be used to trigger the clean sampling vehicle to send relevant signals to the air shower, initiating the linkage process; the emergency stop button can quickly stop the linkage action between the clean sampling vehicle and the air shower in an emergency, ensuring the safety of equipment and personnel; the status indicator lights are used to display the status signals fed back by the air shower, allowing operators to intuitively understand the current status of the air shower, such as whether it is idle or in the air shower, facilitating appropriate operational decisions based on the status.

[0014] Furthermore, the inner wall of the air shower chamber is equipped with an infrared sensor, which is electrically connected to the main controller. The infrared sensor detects the presence of a clean sampling cart within the chamber. When no clean sampling cart is detected, the main controller controls the exit door drive mechanism to close the exit door. This explains the infrared sensor installed on the inner wall of the air shower chamber and its function. The infrared sensor, electrically connected to the main controller, can detect the presence of a clean sampling cart within the chamber in real time. When the clean sampling cart leaves the chamber, if the infrared sensor detects no sampling cart remaining, it sends a signal to the main controller. Upon receiving this signal, the main controller controls the exit door drive mechanism to close the exit door. This design ensures that the exit door closes promptly after the sampling cart leaves, preventing unfiltered outside air from entering the clean area, maintaining the stability of the clean environment, and also avoiding energy consumption caused by prolonged opening of the exit door.

[0015] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are: 1. Used for the linkage structure between clean sampling vehicle and air shower, the linkage control component realizes intelligent collaboration between clean sampling vehicle and air shower, reduces manual operation steps, shortens waiting time, and improves sampling efficiency; 2. In this utility model, the main controller precisely controls the air shower duration and the timing of door opening and closing, avoiding the problem of substandard cleanliness caused by human error and ensuring the environmental quality of the clean area. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort, wherein: Figure 1 is a structural schematic diagram of this utility model; Figure 2 is a simplified flowchart of Example 1; The markings in the diagram are: 1-Clean sampling cart, 2-Air shower, 3-Moving wheel set, 4-HEPA filter, 5-Sampling window, 6-Entrance door, 7-Exit door, 8-Air shower device, 9-Cavity, 10-First signal module, 11-Second signal module, 12-Main controller, 13-Timing module, 14-Servo motor, 15-Transmission gear, 16-Rack and pinion, 17-Control panel, 18-Infrared sensor. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model; that is, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The components of the embodiments of the present utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0018] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0019] It should be noted that relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0020] The features and performance of this utility model will be further described in detail below with reference to the embodiments.

[0021] Example 1 This utility model is used for the linkage structure between a clean sampling vehicle and an air shower, as shown in Figures 1 and 2. It includes a clean sampling vehicle 1, an air shower 2, and a linkage control component. The linkage control component is electrically connected to the clean sampling vehicle 1 and the air shower 2 respectively. The clean sampling cart 1 has wheels 3 at the bottom, a HEPA filter 4 on top, and sampling windows 5 on the sides; the air shower 2 includes an entrance door 6, an exit door 7, an air shower device 8, and a cavity 9, with the entrance door 6 and exit door 7 respectively equipped with... The components are located at both ends of the cavity 9. The linkage control assembly includes a first signal module 10 installed on the clean sampling vehicle 1, a second signal module 11 installed at the entrance of the air shower 2, and a main controller 12. The first signal module 10 and the second signal module 11 are wirelessly connected. The main controller 12 is electrically connected to the second signal module 11, the entrance door drive mechanism, the exit door drive mechanism, and the air shower device 8. The main controller 12 can control the entrance door 6 drive mechanism to open or close the entrance door 6 according to the status signal of the clean sampling vehicle 1 sent by the first signal module 10, and control the air shower device 8 to start or stop the air shower operation. After the air shower operation is completed, it controls the exit door 7 drive mechanism to open the exit door 7.

[0022] The first signal module 10 includes a position sensor and a status transmitter. The position sensor is used to detect the distance signal between the clean sampling vehicle 1 and the entrance of the air shower 2. The status transmitter is used to send the distance signal and the working status signal of the clean sampling vehicle 1. The working status signal includes a waiting-to-enter signal and a sampling completed signal.

[0023] The second signal module 11 includes a signal receiver and a feedback transmitter. The signal receiver is used to receive the distance signal and working status signal sent by the first signal module 10. The feedback transmitter is used to send the status signal of the air shower room 2 to the first signal module. The status signal of the air shower room 2 includes an idle signal, an air shower in progress signal, and a fault signal.

[0024] The main controller 12 is connected to a timing module 13, which is used to set the air shower duration of the air shower device 8. When the air shower device 8 is started, the timing module 13 starts timing. When the preset duration is reached, the main controller 12 controls the air shower device 8 to stop working.

[0025] Both entrance door 6 and exit door 7 are automatic sliding doors. The drive mechanism of entrance door 6 and exit door 7 both include a servo motor 14, a transmission gear 15 and a rack 16. The servo motor 14 is electrically connected to the main controller 12, and its output shaft is fixedly connected to the transmission gear 15. The rack 16 is fixed to the bottom of entrance door 6 / exit door 7 and meshes with the transmission gear 15.

[0026] The clean sampling vehicle 1 is also equipped with a control panel 17, which is electrically connected to the first signal module 10. The control panel 17 is equipped with a start button, an emergency stop button and a status indicator light. The status indicator light is used to display the status signal fed back by the air shower 2.

[0027] An infrared sensor 18 is installed on the inner wall of the cavity 9 of the air shower 2. The infrared sensor 18 is electrically connected to the main controller 12. The infrared sensor 18 is used to detect whether there is a clean sampling cart 1 in the cavity 9. When it is detected that there is no clean sampling cart 1 in the cavity 9, the main controller 12 controls the drive mechanism of the exit door 7 to close the exit door 7.

[0028] The specific implementation method of this embodiment is as follows: the moving wheel set of the clean sampling vehicle adopts universal wheels with braking function, the filtration efficiency of the HEPA filter is 99.99%@0.3μm, and the sampling window is equipped with a pneumatic lifting glass door. The entrance and exit doors of the air shower room are both stainless steel automatic sliding doors, and the air shower device includes 6 sets of stainless steel air shower nozzles, which are evenly distributed on both sides and the top of the cavity.

[0029] In the linkage control component, the position sensor of the first signal module is an ultrasonic ranging sensor with a measurement range of 0.5-5m, and the status transmitter is a 433MHz wireless transmitter; the signal receiver of the second signal module is a wireless receiver in the same frequency band, and the feedback transmitter is a Bluetooth module; the main controller is a PLC controller (model S7-1200), and both the entrance door drive mechanism and the exit door drive mechanism use servo motors (model 130ST-M15015) with gear and rack transmission. Working process: When the clean sampling vehicle moves within 1m of the air shower entrance, the ultrasonic ranging sensor detects a distance signal, and the status transmitter sends an entry signal. After receiving the signal and confirming that the air shower is empty, the PLC controller controls the entrance door servo motor to rotate forward, and the entrance door opens; after the sampling vehicle enters the chamber, the PLC controller receives the position signal, controls the entrance door to close, and starts the air shower device, with the air shower duration set to 30 seconds; after the air shower ends, the PLC controller controls the exit door to open; after the sampling vehicle leaves, the infrared sensor triggers a signal, the exit door closes, and the linkage is completed.

[0030] Example 2 This utility model is used for the linkage structure of a clean sampling vehicle and an air shower, as shown in Figure 1. The specific implementation of this embodiment is as follows: The difference between this embodiment and Embodiment 1 lies in the optimization of the signal module and control logic, as detailed below: The first signal module is equipped with an RFID tag to store the sampling vehicle number and cleanliness level information; the second signal module is equipped with an RFID reader (model HR-9210) to read RFID tag information. The main controller is connected to a touch screen display, which can display the current linkage status and historical records.

[0031] During operation, when the clean sampling vehicle approaches the air shower entrance, the RFID reader reads its tag information, and the main controller verifies whether the cleanliness level of the sampling vehicle meets the air shower usage standards. Only after verification will it respond to the entry request; the remaining linkage steps are the same as in Example 1. At the same time, the touch screen displays real-time status information such as "Sampling Vehicle X Pending Entry" and "Air Shower in Progress (15 seconds remaining)," facilitating operator monitoring of the process.

[0032] This embodiment further ensures that the sampling vehicle entering the clean area meets the cleanliness requirements by adding an identity verification step, and is suitable for scenarios with stricter cleanliness level control.

[0033] The above description is only a preferred embodiment of the present utility model and is not intended to limit the scope of protection of the present utility model. Any modifications, equivalent substitutions and improvements made by those skilled in the art within the spirit and principles of the present utility model should be included within the scope of protection of the present utility model.

Claims

1. A linkage structure for clean sampling carts and air showers, characterized in that: It includes a clean sampling vehicle (1), an air shower (2), and a linkage control component, wherein the linkage control component is electrically connected to the clean sampling vehicle (1) and the air shower (2), respectively; The clean sampling vehicle (1) is equipped with a set of moving wheels (3) at the bottom, a HEPA filter (4) at the top, and a sampling window (5) on the side. The air shower room (2) includes an entrance door (6), an exit door (7), an air shower device (8), and a cavity (9). The entrance door (6) and the exit door (7) are respectively located at both ends of the cavity (9). The linkage control component includes a first signal module (10) installed on the clean sampling vehicle (1), a second signal module (11) installed at the entrance of the air shower room (2), and a main controller (12). The first signal module (10) and the second signal module (11) are wirelessly connected. The main controller (12) is electrically connected to the second signal module (11), the entrance door drive mechanism, the exit door drive mechanism, and the air shower device (8). The main controller (12) can control the entrance door (6) drive mechanism to open or close the entrance door (6) according to the clean sampling vehicle (1) status signal sent by the first signal module (10), and control the air shower device (8) to start or stop the air shower operation, and control the exit door (7) drive mechanism to open the exit door (7) after the air shower operation is completed.

2. The linkage structure for clean sampling vehicle and air shower according to claim 1, characterized in that: The first signal module (10) includes a position sensor and a status transmitter. The position sensor is used to detect the distance signal between the clean sampling vehicle (1) and the entrance of the air shower (2). The status transmitter is used to send the distance signal and the working status signal of the clean sampling vehicle (1). The working status signal includes a waiting-to-enter signal and a sampling completed signal.

3. The linkage structure for clean sampling vehicle and air shower according to claim 2, characterized in that: The second signal module (11) includes a signal receiver and a feedback transmitter. The signal receiver is used to receive the distance signal and working status signal sent by the first signal module (10). The feedback transmitter is used to send the air shower (2) status signal to the first signal module. The air shower (2) status signal includes an idle signal, an air shower signal, and a fault signal.

4. The linkage structure for clean sampling vehicle and air shower according to claim 1, characterized in that: The main controller (12) is connected to a timing module (13). The timing module (13) is used to set the air shower duration of the air shower device (8). When the air shower device (8) is started, the timing module (13) starts timing. When the preset duration is reached, the main controller (12) controls the air shower device (8) to stop working.

5. The linkage structure for clean sampling vehicle and air shower according to claim 1, characterized in that: The entrance door (6) and (7) are both automatic sliding doors. The drive mechanism of the entrance door (6) and the drive mechanism of the exit door (7) both include a servo motor (14), a transmission gear (15) and a rack (16). The servo motor (14) and the main controller (12) Electrical connection, its output shaft is fixedly connected to the transmission gear (15), the rack (16) is fixed to the bottom of the entrance gate (6) / exit gate (7) and meshes with the transmission gear (15).

6. The linkage structure for clean sampling vehicle and air shower according to claim 1, characterized in that: The clean sampling The prototype vehicle (1) is also equipped with a control panel (17), which is electrically connected to the first signal module (10). The control panel (17) is equipped with a start button, an emergency stop button and a status indicator light. The status indicator light is used to display the status signal fed back by the air shower room (2).

7. The linkage structure for clean sampling vehicle and air shower according to claim 1, characterized in that: The air shower (2) The inner wall of the cavity (9) is provided with an infrared sensor (18). The infrared sensor (18) is electrically connected to the main controller (12). The infrared sensor (18) is used to detect whether there is a clean sampling vehicle (1) in the cavity (9). When it is detected that there is no clean sampling vehicle (1) in the cavity (9), the main controller (12) controls the exit door (7) drive mechanism to close the exit door (7).

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