Portable settling bacteria plate support capable of timing
By designing a portable, timed sedimentation plate holder, and utilizing structures such as a telescopic cylinder, button control, and buzzer alarm, the problem of airflow disturbance in cleanrooms was solved, achieving both accuracy and portability in sedimentation bacteria detection, and improving the accuracy of cleanliness reflection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGSHA FOOD & DRUG INSPECTION INST
- Filing Date
- 2025-04-16
- Publication Date
- 2026-05-05
AI Technical Summary
When using existing sedimentation plate holders in cleanrooms for timing operations, hand movements disrupt airflow, leading to uneven distribution of airborne microbial particles and affecting the accuracy of sedimentation bacteria detection.
A portable timed sedimentation petri dish holder was designed, featuring a telescopic cylinder and triangular support structure, button-controlled time, buzzer alarm, temperature and humidity sensor monitoring, rotating disk for storing the cover, and limit posts and convex strips to maintain airflow stability and support balance.
It enables accurate timing and data acquisition without disturbing airflow in cleanrooms, improves the accuracy of sedimentation bacteria detection, and provides timely reminders through a buzzer alarm, enhancing the balance and portability of the support.
Smart Images

Figure CN224199359U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of experimental equipment technology, specifically a portable timed sedimentation plate holder. Background Technology
[0002] Clean areas in biological experiments require sedimentation bacteria testing according to cleanliness levels. This typically requires setting up multiple sampling points in the cleanroom, and usually a clean area has multiple cleanrooms. Sampling points are generally placed at a working height, on a horizontal plane at a height of about 0.8m-1.5m above the ground, and usually require multiple sedimentation bacteria petri dish supports.
[0003] In cleanrooms, stable airflow is crucial for the accuracy of settling bacteria detection. Existing settling plate holders place the timer in the center of the holder, and hand movements during timing operations disrupt the airflow. This turbulence can lead to uneven distribution of airborne microbial particles, affecting the collection of settling bacteria and thus failing to accurately reflect the actual cleanliness of the cleanroom.
[0004] Therefore, this utility model proposes a portable timed sedimentation plate holder. Utility Model Content
[0005] The purpose of this utility model is to provide a portable, timed sedimentation petri dish holder to solve the problems mentioned in the background art. To achieve the above objective, this utility model provides the following technical solution: a portable, timed sedimentation petri dish holder, comprising a telescopic cylinder, a triangular support at the bottom of the telescopic cylinder, a U-shaped frame at the top of the telescopic cylinder, a fixing block inside the U-shaped frame, a frame for placing sedimentation petri dishes above the fixing block, and a display screen for displaying the time inside the frame.
[0006] Preferably, the bottom of the frame is equipped with a buzzer alarm, which is electrically connected to the display screen. The outer wall of the frame is equipped with multiple buttons for adjusting the time value on the display screen.
[0007] Preferably, the frame is equipped with a pair of temperature and humidity sensors inside, the temperature and humidity sensors are fan-shaped, and the data detected by the temperature and humidity sensors are displayed above the display screen.
[0008] Preferably, the U-shaped frame and the fixing block are provided with limiting posts inside, and a protrusion is provided above the limiting posts. The fixing block is provided with a groove for the protrusion to be inserted inside, and a spring is provided outside the limiting posts. When the protrusion is located in the groove inside the fixing block, the frame is parallel to the ground.
[0009] Preferably, there are two grooves, and the center lines of the two grooves are perpendicular to each other.
[0010] Preferably, the bottom of the frame is provided with a shaft, and the outer wall of the shaft is provided with a rotating disk. The rotating disk is used to place the cover of the sedimentation plate, and the rotating disk is rotatably connected to the shaft.
[0011] This utility model has at least the following beneficial effects:
[0012] 1. In this invention, because the time control button is located on the side wall of the frame, the airflow above the settling bacteria petri dish will not be disturbed when the operator adjusts it, thus making the collection of settling bacteria more accurate. Simultaneously, a buzzer alarm will alert the operator after the countdown ends. Compared to existing technologies, the airflow in this device does not cause uneven distribution of airborne microbial particles, thus more accurately reflecting the actual cleanliness of the cleanroom.
[0013] 2. In this utility model, when idle, the rotating disc can be rotated to the bottom of the frame for storage, making it more convenient to store. In experimental mode, the rotating disc can be rotated 180 degrees. In this state, the rotating disc can not only place the cover of the sedimentation plate, making it convenient for operators to collect the sedimentation plate after the experiment, but also the placed sedimentation plate cover can effectively balance the weight at both ends of the frame, so that the center of gravity of the support is located in the central area, which helps to increase the balance and service life of the plate support. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0015] Figure 2 This is a schematic diagram of the various structures at the bottom of the frame in this utility model;
[0016] Figure 3 This is a cross-sectional view of the frame and fixing block structure of this utility model;
[0017] Figure 4 This is a schematic diagram of the fixing block structure in this utility model;
[0018] Figure 5 This is a schematic diagram of the rotating disk structure in this utility model.
[0019] In the diagram: 1-Telescopic cylinder; 2-Triangular bracket; 3-U-shaped frame; 4-Fixing block; 5-Frame body; 6-Display screen; 7-Buzzer alarm; 8-Button; 9-Temperature and humidity sensor; 10-Limit post; 11-Protrusion; 12-Groove; 13-Spring; 14-Shaft; 15-Rotating disc. Detailed Implementation
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0021] Please see Figure 1-5 This utility model provides a technical solution: a portable timed sedimentation plate holder, including a telescopic cylinder 1, with a triangular support 2 at the bottom of the telescopic cylinder 1 and rotatably connected thereto; the telescopic cylinder 1 can freely extend and retract to raise or lower the height of the holder to achieve a suitable experimental height, and the triangular support 2 can open up to each other during the experiment to provide stable support for the holder. The above is the prior art, so it will not be described in detail.
[0022] The top of the telescopic cylinder 1 is equipped with a U-shaped frame 3 and is fixedly connected to it. Inside the U-shaped frame 3 is a fixing block 4. Above the fixing block 4 is a frame 5 for placing sedimentation petri dishes. The top of the fixing block 4 is fixedly connected to the frame 5. Inside the frame 5 is a display screen 6 for displaying time. At the bottom of the frame 5 is a buzzer alarm 7 and is fixedly connected to it. The buzzer alarm 7 is electrically connected to the display screen 6. The outer wall of the frame 5 is equipped with multiple buttons 8 and is fixedly connected to them. The buttons 8 are used to adjust the time value on the display screen 6.
[0023] The experimenter can set the required time for the experiment using button 8. After the countdown ends, the buzzer alarm 7 will receive a start signal and sound an alarm to remind the experimenter to take timely action. Because the time control button 8 is located on the side wall of the frame 5, when the operator adjusts it, the top of the open sedimentation petri dish will not be affected by disturbed airflow, thus making the collection of sedimentation bacteria more accurate. Compared with existing technologies, the airflow in this device does not cause uneven distribution of airborne microbial particles, thus more accurately reflecting the actual cleanliness of the cleanroom.
[0024] Furthermore, a pair of temperature and humidity sensors 9 are installed inside the frame 5 and fixedly connected to it. The temperature and humidity sensors 9 are fan-shaped, and the data detected by the temperature and humidity sensors 9 are displayed above the display screen 6. The fan-shaped temperature and humidity sensors 9 can exchange gas with the outside through the fan-shaped vents, thereby more sensitively monitoring changes in temperature and humidity and displaying them on the display screen 6 in a timely manner. In conjunction with the timing function of the display screen 6, the staff can obtain more comprehensive experimental data.
[0025] The bottom of the frame 5 is equipped with a shaft 14 and is fixedly connected to it. The outer wall of the shaft 14 is equipped with a rotating disk 15, which is used to hold the lids of the settling bacteria petri dishes. The rotating disk 15 is rotatably connected to the shaft 14. When the frame is not in use, the rotating disk 15 can be rotated to the bottom of the frame 5 for easy storage. In experimental mode, the rotating disk 15 can be rotated 180 degrees. In this state, the rotating disk 15 can not only hold the lids of the settling bacteria petri dishes, making it convenient for operators to collect the settling bacteria after the experiment, but the placed petri dish lids can also effectively balance the weight at both ends of the frame 5, so that the center of gravity of the frame is located in the central area, which helps to increase the balance and service life of the petri dish frame.
[0026] In addition, the U-shaped frame 3 and the fixing block 4 are provided with limiting posts 10 inside. The limiting posts 10 slide freely inside the U-shaped frame 3 and the fixing block 4. The upper part of the limiting posts 10 is provided with a protrusion 11 and is fixedly connected to it. The inside of the fixing block 4 is provided with a groove 12 for the protrusion 11 to be inserted. The outside of the limiting posts 10 is provided with a spring 13. The two ends of the spring 13 are fixedly connected to the end cap of the limiting posts 10 and the U-shaped frame 3 respectively. When the protrusion 11 is located in the groove 12 inside the fixing block 4, the frame 5 is parallel to the ground. There are two grooves 12, and the center lines of the two grooves 12 are perpendicular to each other.
[0027] In the experimental state, the frame 5 is parallel to the ground. In this state, the settling bacteria will fall more evenly inside the petri dish, resulting in more accurate experimental data. After the experiment, the operator can pull out the protrusion 11 on the outer wall of the limiting post 10 from inside the fixing block 4 and rotate the frame 5 along the limiting post 10 until the protrusion 11 aligns with another groove 12 of the fixing block 4. Then, the spring 13's rebound force will insert the protrusion 11 of the limiting post 10 into the groove 12, thus limiting the fixing block 4 and the U-shaped frame 3. In this state, the frame 5 is parallel to the rod of the telescopic cylinder 1. The triangular support 2 and the telescopic cylinder 1 can then be stored, greatly reducing the overall size of the frame and making subsequent storage and organization easier, as well as making it more convenient for staff to carry and transport.
[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only 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 process, method, article, or apparatus.
[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A portable timed sedimentation petri dish holder, comprising a telescopic cylinder (1), wherein a triangular support (2) is provided at the bottom end of the telescopic cylinder (1), characterized in that: The top of the telescopic cylinder (1) is provided with a U-shaped frame (3), the inside of the U-shaped frame (3) is provided with a fixing block (4), the top of the fixing block (4) is provided with a frame (5) for placing sedimentation plates, and the inside of the frame (5) is provided with a display screen (6) for displaying time. The bottom of the frame (5) is provided with a buzzer alarm (7), which is electrically connected to the display screen (6). The outer wall of the frame (5) is provided with multiple buttons (8), which are used to adjust the time value in the display screen (6).
2. The portable timed sedimentation plate holder according to claim 1, characterized in that: The frame (5) is equipped with a pair of temperature and humidity sensors (9). The temperature and humidity sensors (9) are fan-shaped, and the data detected by the temperature and humidity sensors (9) are displayed on the screen (6).
3. The portable timed sedimentation plate holder according to claim 2, characterized in that: The U-shaped frame (3) and the fixing block (4) are provided with limiting posts (10) inside. The limiting posts (10) are provided with protrusions (11) above them. The fixing block (4) is provided with grooves (12) for the protrusions (11) to be inserted inside. The limiting posts (10) are provided with springs (13) outside them. When the protrusions (11) are located in the grooves (12) inside the fixing block (4), the frame (5) is parallel to the ground.
4. The portable timed sedimentation plate holder according to claim 3, characterized in that: There are two grooves (12), and the center lines of the two grooves (12) are perpendicular to each other.
5. The portable timed sedimentation plate holder according to claim 4, characterized in that: The bottom of the frame (5) is provided with a shaft (14), and the outer wall of the shaft (14) is provided with a rotating disk (15). The rotating disk (15) is used to place the cover of the sedimentation plate. The rotating disk (15) is rotatably connected to the shaft (14).