Aseptic handling device for a laboratory

Abstract

This utility model relates to a sterile operating device for laboratory use, belonging to the field of laboratory sterile operation technology. The sterile operating device for laboratory use includes: a laminar flow hood; and a protective mechanism. The protective mechanism includes several filter frames slidably connected to the upper part of the inner wall of the laminar flow hood. A sealing strip is fixedly connected to the surface of each filter frame. Several fixing blocks are fixedly connected to the inner wall of each sealing strip. A first spring and a pull rope are fixedly connected to the end of each fixing block. The other end of the first spring is fixedly connected to the inner wall of the filter frame. The other end of the pull rope passes through the filter frame and is fixedly connected to a pull block. Through the cooperation of the pull block and the pull rope, the four sides of the sealing strip surface can be pulled away from the inner wall of the laminar flow hood, thereby facilitating the pulling of the filter frames and sealing strips out of the laminar flow hood. This avoids damage to the filter frames and sealing strips during disassembly and ensures the filtration effect of the laminar flow hood.

Description

Technical Field

[0001] This utility model relates to the field of laboratory aseptic operation technology, and in particular to an aseptic operation device for laboratory use. Background Technology

[0002] Laboratories are specialized spaces for scientific research, experimental testing, and teaching practice. To ensure that biological experiments are not contaminated by external microorganisms and to guarantee the accuracy and reliability of experimental results, laminar flow hoods are typically used. These hoods filter the air around the experimental area, creating a sterile working environment that isolates the area from the external environment and prevents microorganisms from the outside air and dust from entering.

[0003] During long-term use, the filter in the clean bench needs to be opened frequently, the filter housing needs to be pulled, and the multi-stage filter screen inside the filter needs to be moved away from the inside of the filter, so that the multi-stage filter screen can be disassembled and cleaned.

[0004] Because the sealing strip is usually tightly attached to the inside of the filter, it requires a lot of force to pull the multi-stage filter screen, which can easily damage the multi-stage filter screen and the sealing strip, thus affecting the filtration effect of the clean bench. Utility Model Content

[0005] Therefore, it is necessary to provide a sterile operating device for the laboratory to address the problem that the sealing strip is usually tightly attached to the inside of the filter, which requires a lot of force to pull the multi-stage filter screen and easily damages the multi-stage filter screen and the sealing strip.

[0006] The system includes: a clean bench; and a protective mechanism comprising several filter frames slidably connected to the upper inner wall of the clean bench. Each filter frame has a sealing strip fixedly connected to its surface. Several fixing blocks are fixedly connected to the inner wall of the sealing strip. A first spring and a pull rope are fixedly connected to the end of each fixing block. The other end of the first spring is fixedly connected to the inner wall of the filter frame, and the other end of the pull rope passes through the filter frame and is fixedly connected to a pull block. Through the interaction of the pull blocks and the pull rope, the sealing strip can be pulled away from the inner wall of the clean bench on all four sides, facilitating the removal of the filter frames and sealing strips from the clean bench. This prevents damage to the filter frames and sealing strips during disassembly and ensures the filtration effect of the clean bench.

[0007] In one embodiment, a friction frame is fixedly connected to the upper end of the inner wall of the clean bench, and the surface of the friction frame is snapped into the inner wall of the filter frame.

[0008] In one embodiment, the top of the friction frame is fixedly connected to two handles.

[0009] In one embodiment, a locking rod is slidably connected to the upper end of the inner wall of the friction frame, and the surface of the locking rod is engaged with the inner wall of the clean bench.

[0010] In one embodiment, a second spring is fixedly connected to one end of the clamping rod, and the other end of the second spring is fixedly connected to the upper end of the inner wall of the friction frame. The friction frame is clamped into the filter frame, thereby locking the filter frame. The elastic force of the second spring automatically pushes the clamping rod to move and clamp into the clean bench, thus locking the friction frame and ensuring the stability of the filter frame within the clean bench, thereby guaranteeing the filtration effect of the clean bench.

[0011] In one embodiment, one end of the locking rod is fixedly connected to a connecting rope block, and the other end of the connecting rope block passes through and extends out of the inner wall of the friction frame. By pulling the connecting rope block, the locking rod is moved away from the friction frame, thereby releasing the locking of the friction frame. The friction frame can be easily pulled upwards and away from the filter frame using the handle, making the operation of releasing the locking of the filter frame simple.

[0012] In one embodiment, the sealing strip, friction frame, and clamp are all nitrile rubber components.

[0013] Beneficial effects

[0014] 1. By using the pull block and pull rope in combination, the four sides of the sealing strip can be pulled away from the inner wall of the clean bench, which makes it easier to pull the filter frame and sealing strip out of the clean bench. This avoids damage to the filter frame and sealing strip during disassembly and ensures the filtration effect of the clean bench.

[0015] 2. The friction frame is attached to the filter frame and then locked. The elastic force of the second spring automatically pushes the locking rod to move and engage with the filter frame inside the clean bench, thus locking the friction frame and ensuring the stability of the filter frame inside the clean bench, thereby ensuring the filtration effect of the clean bench. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the protective mechanism structure of this utility model;

[0019] Figure 3 This is a cross-sectional view of the protective mechanism of this utility model;

[0020] Figure 4 This utility model Figure 3 Enlarged view of point A in the middle.

[0021] Figure label:

[0022] 100. Clean bench; 200. Protective mechanism; 201. Filter frame; 202. Sealing strip; 203. First spring; 204. Pull rope; 205. Pull block; 206. Friction frame; 207. Clamping rod; 208. Second spring; 209. Connecting rope block; 210. Handle; 211. Fixing block. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this specification are for illustrative purposes only and do not represent the only possible implementation.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0026] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0027] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this specification belongs. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0028] The following is combined Figures 1-4 This invention describes a sterile operating device for use in a laboratory.

[0029] In one embodiment, a sterile operating device for a laboratory includes: a laminar flow hood 100; and a protective mechanism 200. The protective mechanism 200 includes a plurality of filter frames 201 slidably connected to the upper end of the inner wall of the laminar flow hood 100. A sealing strip 202 is fixedly connected to the surface of the filter frame 201. A plurality of fixing blocks 211 are fixedly connected to the inner wall of the sealing strip 202. A first spring 203 and a pull rope 204 are fixedly connected to the end of the fixing block 211. The other end of the first spring 203 is fixedly connected to the inner wall of the filter frame 201. The other end of the pull rope 204 passes through the filter frame 201 and is fixedly connected to a pull block 205.

[0030] There are three filter frames 201. The upper filter frame 201 has a primary filter screen fixedly connected to its inner wall, the middle filter frame 201 has a secondary filter screen fixedly connected to its inner wall, and the lower filter frame 201 has a tertiary filter screen fixedly connected to its inner wall. The primary filter screen is usually made of non-woven fabric or nylon mesh and is mainly used to filter larger particles of dust in the air, such as hair and paper scraps, playing a primary filtration role and protecting the subsequent secondary and tertiary filters, thus extending their service life.

[0031] The intermediate and advanced filters are the core filtration components of the Clean Bench 100. They use high-efficiency filtration materials such as glass fiber filter paper or polypropylene filter paper, which can filter out particles with a diameter of 0.3 microns or larger from the air, with a filtration efficiency of over 99.97%, providing a clean air environment for the work area.

[0032] When researchers need to conduct biological experiments, they should place the laminar flow hood 100 in a clean, dry place in the biological laboratory, away from pollution sources and air vents, and plug the power cord of the laminar flow hood 100 into the power socket to reduce the interference of the external environment on the operation.

[0033] By controlling the PLC touchscreen at the front of the laminar flow hood 100, the internal fan and ultraviolet lamp are automatically turned on. The fan rotates and draws in air from around the laminar flow hood 100, filtering it through the filters in the three filter frames 201. The filtered air is then blown from top to bottom into the working area inside the laminar flow hood 100 and allowed to run for 15-30 minutes to purify the air in the working area. At the same time, the ultraviolet lamp is turned on and irradiates for about 30 minutes to sterilize and disinfect the working area. After irradiation, a period of time should be waited for the ozone to dissipate before resuming operation.

[0034] Operators should wear clean work clothes, work caps and masks. Work clothes should be cleaned and disinfected regularly. Hands should be thoroughly washed and then wiped with 75% alcohol swabs to ensure that the hands are sterile.

[0035] After wiping the surfaces of necessary experimental items such as petri dishes, pipettes, and culture media with alcohol swabs, place them inside the laminar flow hood 100 before conducting biological experiments. Minimize the bringing in of unnecessary items to maintain a clean work area and ensure proper airflow.

[0036] During operation, maintain the normal airflow mode of the laminar flow hood 100 and do not extend any part of your body into the work area for an extended period of time, so as not to disrupt the stability of the airflow and affect the purification effect.

[0037] Avoid moving your arms or objects quickly in the work area to prevent turbulence that could allow unfiltered outside air to enter the work area.

[0038] After operation, promptly remove used items from the laminar flow hood 100 to maintain a clean work area. Wipe the work surface and instruments with 75% alcohol swabs, then turn on the ultraviolet lamp for approximately 30 minutes to disinfect the work area again. Operate the front PLC touchscreen of the laminar flow hood 100 to automatically shut off the fan and ultraviolet lamp, and fill in the usage record, recording information such as usage time and operation content.

[0039] In this embodiment, when it is necessary to clean the filter screen inside the filter frame 201, the locking of the filter frame 201 is released, the pull block 205 is pulled, and the multiple sets of pull ropes 204 move to pull each fixed block 211, thereby creating a gap between the four sides of the surface of the sealing strip 202 and the inner wall of the clean bench 100. The three filter frames 201 are then pulled away from the clean bench 100, so that the filter screen inside the filter frame 201 can be cleaned.

[0040] like Figure 3 As shown, a friction frame 206 is fixedly connected to the upper end of the inner wall of the clean bench 100. The surface of the friction frame 206 is snapped into the inner wall of the filter frame 201. Two handles 210 are fixedly connected to the top of the friction frame 206. A locking rod 207 is slidably connected to the upper end of the inner wall of the friction frame 206. The surface of the locking rod 207 is snapped into the inner wall of the clean bench 100. A second spring 208 is fixedly connected to one end of the locking rod 207. The other end of the second spring 208 is fixedly connected to the upper end of the inner wall of the friction frame 206. A connecting rope block 209 is fixedly connected to one end of the locking rod 207. The other end of the connecting rope block 209 passes through and extends out of the inner wall of the friction frame 206. The sealing strip 202, the friction frame 206 and the locking rod 207 are all nitrile rubber components.

[0041] The connecting rope block 209 includes a connecting rope and a connecting block. The top end of the connecting rope is fixedly connected to the bottom of the connecting block, and the other end of the connecting rope is fixedly connected to one end of the clamping rod 207. The sealing strip 202, friction frame 206, and clamping rod 207 of the nitrile rubber component have good elasticity and friction performance.

[0042] In this embodiment, after cleaning, the three filter frames 201 and the sealing strip 202 are slid into the clean bench 100. The pull block 205 is loosened, and the elastic force of the first spring 203 pushes the fixing block 211 toward the inner wall of the clean bench 100, so that the sealing strip 202 is tightly attached to the inner wall of the clean bench 100. The handle 210 is pressed, so that the friction frame 206 moves down and is engaged with the filter frame 201. The elastic force of the second spring 208 pushes the locking rod 207 to move and be engaged with the clean bench 100, so that the filter frame 201 is installed in the clean bench 100.

[0043] Working principle: Pulling the connecting rope block 209 upwards moves the clamping rod 207 away from the friction frame 206. Pulling the handle 210 upwards moves the friction frame 206 away from the filter frame 201. Pulling the pull block 205 moves multiple sets of pull ropes 204, pulling each fixed block 211, thereby creating a gap between the four sides of the sealing strip 202 surface and the inner wall of the clean bench 100. Pulling the three filter frames 201 moves the filter frames 201 away from the clean bench 100.

[0044] It should be noted that the clean bench 100, filter frame 201, sealing strip 202, first spring 203 and second spring 208 mentioned above are all devices with relatively mature existing technology. The specific model can be selected according to actual needs. At the same time, the clean bench 100 can be powered by the built-in power supply or by the mains power. The specific power supply method is selected according to the situation and will not be elaborated here.

[0045] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0046] The above-described embodiments are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A sterile operating device for laboratory use, characterized in that, include: Clean bench (100); The protective mechanism (200) includes several filter frames (201) slidably connected to the upper end of the inner wall of the clean bench (100). A sealing strip (202) is fixedly connected to the surface of the filter frame (201). Several fixing blocks (211) are fixedly connected to the inner wall of the sealing strip (202). A first spring (203) and a pull rope (204) are fixedly connected to the end of the fixing block (211). The other end of the first spring (203) is fixedly connected to the inner wall of the filter frame (201). The other end of the pull rope (204) passes through the filter frame (201) and is fixedly connected to a pull block (205).

2. A device for aseptic manipulation of laboratory, according to claim 1, characterized in that, A friction frame (206) is fixedly connected to the upper end of the inner wall of the ultra-clean workbench (100), and the surface of the friction frame (206) is snapped into the inner wall of the filter frame (201).

3. Aseptic handling device for laboratories according to claim 2, characterized in that, The friction frame (206) has two handles (210) fixedly connected to its top.

4. A device for aseptic manipulation of laboratory, according to claim 2, characterized in that, The friction frame (206) has a locking rod (207) slidably connected to the upper end of its inner wall, and the surface of the locking rod (207) is engaged with the inner wall of the clean bench (100).

5. A device for aseptic manipulation of laboratory, according to claim 4, characterized in that, One end of the lever (207) is fixedly connected to a second spring (208), and the other end of the second spring (208) is fixedly connected to the upper end of the inner wall of the friction frame (206).

6. A device for aseptic manipulation of laboratory, according to claim 4, characterized in that, One end of the lever (207) is fixedly connected to a connecting rope block (209), and the other end of the connecting rope block (209) passes through and extends out of the inner wall of the friction frame (206).

7. A device for aseptic manipulation of laboratory, according to claim 1, characterized in that, The sealing strip (202), friction frame (206), and clamp (207) are all nitrile rubber components.

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