Biological safety cabinet
By designing air holes, convex lenses and one-way air valve systems in the biosafety cabinet, the operation inconvenience caused by operators wearing multiple protective supplies is solved, hand flexibility and safe purification of the experimental environment is achieved, and the operation process is simplified.
Patent Information
- Application Number
- CN202420726733.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-10
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-04-10
AI Technical Summary
During the actual use of the biosafety cabinet, the operator needs to wear a large number of protective supplies, such as gloves, masks and goggles, which leads to inconvenience in operation and reduced hand flexibility, affecting the experimental operation process.
A biosafety cabinet was designed, which includes air holes and tempered glass at the bottom of the inner wall of the operating cabinet, with convex lenses and perforations on the top, protective gloves installed on the perforated inner wall, air filter pipes are close to tempered glass, and air filtration and circulation are realized through a one-way air valve to reduce Equipment requirements for operators.
Operators can operate directly through protective gloves and observe experimental items through convex lenses and tempered glass. The negative pressure purification system in the operating cabinet ensures air filtration, reduces constraints on the hands, and improves operating comfort and flexibility.
Smart Images
Figure CN222174114U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of biological safety cabinets, in particular to a biological safety cabinet. Background Art
[0002] A biological safety cabinet is a box-type air-purifying negative-pressure safety device that can prevent the escape of aerosols containing certain dangerous or unknown biological particles during experimental operations. It is widely used in scientific research, teaching, clinical testing and production in the fields of microbiology, biomedicine, genetic engineering, and biological products. It is the most basic safety protection equipment in the first-level protection barrier of laboratory biosafety.
[0003] However, in the actual use of the biological safety cabinet, it is inevitable to use some items that are harmful to the human body or volatile items during experiments. Operators need to be equipped with a large number of protective equipment to protect themselves, such as gloves, masks, and goggles. However, wearing multiple gloves, masks, and goggles makes operators feel less comfortable and affects the flexibility of hand operation, affecting the operation process. Utility Model Content
[0004] The purpose of the utility model is to solve the following problems existing in the prior art:
[0005] However, in the actual use of the biological safety cabinet, it is inevitable to use some items that are harmful to the human body or volatile items during experiments. Operators need to be equipped with a large number of protective equipment to protect themselves, such as gloves, masks, and goggles. However, wearing multiple gloves, masks, and goggles makes operators feel less comfortable and affects the flexibility of hand operation, affecting the operation process.
[0006] In order to solve the problems existing in the prior art, the utility model provides a biological safety cabinet, including a purification part and an operating cabinet arranged at the bottom of the purification part, wherein the bottom of the inner wall of the operating cabinet is provided with air holes, the open end of the operating cabinet is provided with tempered glass, the top of the tempered glass is provided with a convex lens, the surface of the tempered glass is provided with perforations, protective gloves are installed on the perforated inner wall, an air filter tube is installed on the side of the bottom of the inner wall of the operating cabinet close to the tempered glass, and a one-way air valve is installed on the side of the air filter tube close to the tempered glass.
[0007] The utility model provides a biological safety cabinet.
[0008] Furthermore, a sealed glass frame is provided on one side of the operating cabinet opening, the operating cabinet is connected to the tempered glass through the sealed glass frame, a gap is left between the top of the tempered glass and the inner wall of the operating cabinet, and a convex lens is placed in the gap.
[0009] Furthermore, the convex lens is arranged in an inclined state, and the inclined direction of the convex lens is the direction in which the top is toward the inside of the operating cabinet.
[0010] Furthermore, there are two perforations, the distance between the two perforations is adapted to the distance between the arms of the operator, and a sealing connector is provided on the inner wall of the perforation.
[0011] Furthermore, the protective glove is connected to the perforation through a sealing connector, and the protective glove is made of medical rubber.
[0012] Furthermore, the air filter pipe is arranged at the connection between the tempered glass and the operating cabinet, and the output end is inclined at forty-five degrees.
[0013] Furthermore, one end of the one-way air valve extends through the tempered glass to the outside, and a manual switch is provided at the end of the one-way air valve. The ventilation direction of the one-way air valve is that the air moves along one end of the outer side of the tempered glass to the other end.
[0014] Compared with the prior art, the present invention has the following beneficial effects:
[0015] The utility model allows an operator to insert his hand into the protective glove through the perforation during use, and perform operations in the operating cabinet through the protective glove. During the operation of the safety cabinet, the operator can observe the items in the operating cabinet through the convex lens and the tempered glass. During experiments, the interior of the operating cabinet is under negative pressure due to the action of the purification part. Air can enter the air filter pipe through the one-way air valve and enter the operating cabinet after filtering impurities through the air filter pipe, or the one-way air valve can be closed to allow internal circulation in the operating cabinet to adapt to special experiments. During the operation, the operator does not need to wear multiple gloves additionally, and can perform direct operations only through the protective gloves. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0017] Figure 2 This is a schematic diagram of the operating cabinet of the utility model;
[0018] Figure 3 This is a schematic diagram of the protective gloves of the utility model;
[0019] Figure numerals: 1. purification part; 2. operation cabinet; 2-1, air hole; 3. tempered glass; 4. convex lens; 5. perforation; 6. protective gloves; 7. air filter tube; 8. one-way air valve. DETAILED DESCRIPTION
[0020] In order to make the technical means, creative features, objectives and effects of the utility model easy to understand, the utility model is further described below in conjunction with specific embodiments and drawings, but the following embodiments are only preferred embodiments of the utility model, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the present invention.
[0021] The specific embodiments of the present utility model are described below in conjunction with the accompanying drawings.
[0022] Example 1
[0023] like Figure 1-3 As shown, a biological safety cabinet comprises a purification part 1 and an operating cabinet 2 arranged at the bottom of the purification part 1, the bottom of the inner wall of the operating cabinet 2 is provided with an air hole 2-1, the open end of the operating cabinet 2 is provided with a tempered glass 3, the top of the tempered glass 3 is provided with a convex lens 4, a sealing glass frame is provided on one side of the opening of the operating cabinet 2, the operating cabinet 2 is connected to the tempered glass 3 through the sealing glass frame, a gap is left between the top of the tempered glass 3 and the inner wall of the operating cabinet 2, the convex lens 4 is placed in the gap, the convex lens 4 is arranged in an inclined state, and the inclination direction of the convex lens 4 is the direction in which the top faces the inside of the operating cabinet 2, and a perforation 5 is opened on the surface of the tempered glass 3, there are two perforations 5, and the spacing between the two perforations 5 is 1 / 4. It is adapted to the arm distance of the operator, and a sealing connector is provided on the inner wall of the perforation 5, and a protective glove 6 is installed on the inner wall of the perforation 5, the protective glove 6 is connected to the perforation 5 through the sealing connector, and the protective glove 6 is made of medical rubber, and an air filter tube 7 is installed on the side of the bottom of the inner wall of the operating cabinet 2 close to the tempered glass 3, the air filter tube 7 is arranged at the connection between the tempered glass 3 and the operating cabinet 2, and the output end is inclined at forty-five degrees, and a one-way air valve 8 is installed on the side of the air filter tube 7 close to the tempered glass 3, one end of the one-way air valve 8 passes through the tempered glass 3 and extends to the outside, and a manual switch is provided at the end of the one-way air valve 8, and the ventilation direction of the one-way air valve 8 is that the air moves from one end of the outer side of the tempered glass 3 to the other end.
[0024] Description of the working principle: First, the operator chooses to open or close the one-way air valve 8 according to the actual experimental purpose, and then inserts the hand through the perforation 5 into the protective glove 6, and operates in the operating cabinet 2 through the protective glove 6. During the operation of the safety cabinet, the operator can observe the items in the operating cabinet 2 through the convex lens 4 and the tempered glass 3.
[0025] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.
Claims
1. A biological safety cabinet, comprising a purification section (1) and an operating cabinet (2) arranged at the bottom of the purification section (1), characterized in that: The bottom of the inner wall of the operating cabinet (2) is provided with an air hole (2-1), the open end of the operating cabinet (2) is provided with a tempered glass (3), the top of the tempered glass (3) is provided with a convex lens (4), the surface of the tempered glass (3) is provided with a perforation (5), the inner wall of the perforation (5) is provided with a protective glove (6), the bottom of the inner wall of the operating cabinet (2) is provided with an air filter tube (7) on the side close to the tempered glass (3), and the side of the air filter tube (7) is provided with a one-way air valve (8) on the side close to the tempered glass (3).
2. A biological safety cabinet according to claim 1, characterized in that: A sealed glass frame is provided on one side of the opening of the operating cabinet (2); the operating cabinet (2) is connected to the tempered glass (3) via the sealed glass frame; a gap is left between the top of the tempered glass (3) and the inner wall of the operating cabinet (2); and a convex lens (4) is placed in the gap.
3. A biological safety cabinet according to claim 1, characterized in that: The convex lens (4) is arranged in an inclined state, and the inclined direction of the convex lens (4) is a direction in which the top faces the inside of the operating cabinet (2).
4. A biological safety cabinet according to claim 1, characterized in that: There are two perforations (5) in total, the distance between the two perforations (5) is adapted to the distance between the arms of an operator, and a sealing connection piece is provided on the inner wall of the perforation (5).
5. A biological safety cabinet according to claim 4, characterized in that: The protective glove (6) is connected to the perforation (5) via a sealing connection piece, and the protective glove (6) is made of medical rubber.
6. A biological safety cabinet according to claim 1, characterized in that: The air filter pipe (7) is arranged at the connection between the tempered glass (3) and the operating cabinet (2), and the output end is arranged at a 45-degree inclination.
7. A biological safety cabinet according to claim 1, characterized in that: One end of the one-way air valve (8) passes through the tempered glass (3) and extends to the outside, and a manual switch is provided at the end of the one-way air valve (8). The ventilation direction of the one-way air valve (8) is that air moves along one end of the outer side of the tempered glass (3) to the other end.