Lead protection screen for biosafety cabinet

Abstract

The utility model belongs to the field of lead protection screens, and particularly relates to a lead protection screen for a biosafety cabinet, which comprises a slide rail, a screen seat is slidably connected in the upper end of the slide rail, two symmetrically distributed stainless steel frames are fixedly connected to the upper end of the screen seat, lead glass is mounted between the two stainless steel frames in a common clamping manner, and the lead glass is fixedly connected with the slide rail. A stainless steel frame is fixedly connected to the upper end of the lead glass, a sliding mechanism is arranged in the screen base, a positioning cover is fixedly connected to the front face of the screen base, and a pull ring rod is slidably connected to the interior of the positioning cover. The lead glass, the stainless steel frame, the sliding mechanism and other structures are additionally arranged on the sliding rail, the lead glass can be driven to move through the screen base in the using process, radioactive rays in the corresponding area can be blocked in the moving process of the lead glass, and therefore the safety of operators can be effectively protected.

Description

Technical Field

[0001] This utility model relates to the field of lead protective screen technology, specifically a lead protective screen for a biosafety cabinet. Background Technology

[0002] Biosafety cabinets are box-type air-purifying negative pressure safety devices that prevent the aerosol release of hazardous or unknown biological particles during experimental procedures. They are widely used in research, teaching, clinical testing, and production in fields such as microbiology, biomedicine, genetic engineering, and biopharmaceuticals. They are the most basic safety protection equipment in the primary protection barrier of laboratory biosafety. However, current biosafety cabinets, when handling radioactive materials, rely solely on a single glass partition to block the experimental area, leading to the diffusion of radioactive materials and exposure of operators to radiation, potentially harming their health. Therefore, improvements to the existing technology are necessary. Utility Model Content

[0003] The purpose of this invention is to provide a lead protective screen for biosafety cabinets, which solves the problem of lack of protection for operators when conducting radioactive experiments.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a lead protective screen for a biosafety cabinet, comprising a slide rail, a screen base slidably connected to the upper end of the slide rail, two symmetrically distributed stainless steel frames fixedly connected to the upper end of the screen base, lead glass being bonded between the two stainless steel frames, a stainless steel frame fixedly connected to the upper end of the lead glass, a sliding mechanism being provided inside the screen base, a positioning cover being fixedly connected to the front of the screen base, a pull ring rod slidably connected inside the positioning cover, a positioning seat being fixedly connected to the end of the pull ring rod near the slide rail, a spring being provided on the outer side of the pull ring rod, and multiple evenly distributed positioning grooves being opened on the front of the slide rail.

[0005] Preferably, the lead glass is fixedly connected to the screen base, and the positioning cover is slidably connected to the slide rail. The lead glass can protect against radiation.

[0006] Preferably, the outer side of the stainless steel frame is slidably connected with two symmetrically distributed guide bars, which can guide the movement of the stainless steel frame.

[0007] Preferably, the positioning seat is slidably connected to the positioning cover, and the positioning seat is slidably connected to the positioning groove, so that the positioning seat can limit the positioning cover through the positioning groove.

[0008] Preferably, one end of the spring is fixedly connected to the positioning cover, and the other end of the spring is fixedly connected to the positioning seat. The spring can automatically reset the positioning seat through its elastic force.

[0009] Preferably, the sliding mechanism includes a support, the support is slidably connected inside the screen base, a ball is movably connected to the lower end of the support, a limit ring is movably connected to the outer side of the ball, a spring is provided inside the screen base, and the ball is movably connected to the slide rail. The ball can support the screen base, making the movement of the screen base smoother.

[0010] Preferably, the limiting ring is fixedly connected to the screen base, one end of the second spring is fixedly connected to the support, and the other end of the second spring is fixedly connected to the screen base. The second spring can support the support through its elastic force.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] 1. This utility model, by adding lead glass, stainless steel frame and sliding mechanism to slide rail, allows the lead glass to move during use via screen base. During the movement, the lead glass can block radioactive rays in the corresponding area, thereby effectively protecting the safety of operators.

[0013] 2. This utility model adds a positioning cover, a pull ring rod, and a positioning seat to the screen base. During use, the positioning seat can be moved into the positioning groove by the elastic force of the spring to limit the position of the positioning cover and the screen base, thereby making the placement of lead glass more stable. Attached Figure Description

[0014] Figure 1 This is a perspective view of the overall structure of this utility model;

[0015] Figure 2 For the present utility model Figure 1 A partial three-dimensional sectional view of the structure;

[0016] Figure 3 For the present utility model Figure 1 Enlarged left sectional view of the slide rail;

[0017] Figure 4 For the present utility model Figure 2 Enlarged view of the A-section structure;

[0018] Figure 5 For the present utility model Figure 4 A 3D magnified view of the positioning seat.

[0019] In the diagram: 2. Slide rail; 3. Screen base; 4. Stainless steel frame; 5. Lead glass; 6. Stainless steel frame; 7. Guide bar; 8. Sliding mechanism; 9. Positioning cover; 10. Pull ring rod; 11. Positioning seat; 12. Spring 1; 13. Positioning groove; 81. Support; 82. Ball bearing; 83. Limiting ring; 84. Spring 2. 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 , Figure 2 , Figure 4 , Figure 5 A lead protective screen for a biosafety cabinet includes a slide rail 2, a screen base 3 slidably connected to the upper end of the slide rail 2, two symmetrically distributed stainless steel frames 4 fixedly connected to the upper end of the screen base 3, lead glass 5 bonded together between the two stainless steel frames 4, a stainless steel frame 6 fixedly connected to the upper end of the lead glass 5, a sliding mechanism 8 provided inside the screen base 3, a positioning cover 9 fixedly connected to the front of the screen base 3, a pull ring rod 10 slidably connected inside the positioning cover 9, a positioning seat 11 fixedly connected to the end of the pull ring rod 10 near the slide rail 2, a spring 12 provided on the outer side of the pull ring rod 10, and multiple evenly distributed positioning grooves 13 opened on the front of the slide rail 2.

[0022] Please see Figure 1 , Figure 2 , Figure 4 , Figure 5 The lead glass 5 is fixedly connected to the screen base 3, and the positioning cover 9 is slidably connected to the slide rail 2. The lead glass 5 can protect against radiation. Two symmetrically distributed guide bars 7 are slidably connected to the outside of the stainless steel frame 6. The guide bars 7 can guide the movement of the stainless steel frame 6. The positioning seat 11 is slidably connected to the positioning cover 9 and the positioning groove 13. The positioning seat 11 can limit the positioning cover 9 through the positioning groove 13. One end of the spring 12 is fixedly connected to the positioning cover 9, and the other end of the spring 12 is fixedly connected to the positioning seat 11. The spring 12 can drive the positioning seat 11 to automatically reset through elastic force.

[0023] Please see Figure 1 , Figure 3The sliding mechanism 8 includes a support 81. The support 81 is slidably connected inside the screen base 3. A ball bearing 82 is movably connected to the lower end of the support 81. A limit ring 83 is movably connected to the outer side of the ball bearing 82. A spring 84 is provided inside the screen base 3. The ball bearing 82 is movably connected to the slide rail 2. The ball bearing 82 can support the screen base 3, making the movement of the screen base 3 smoother. The limit ring 83 is fixedly connected to the screen base 3. One end of the spring 84 is fixedly connected to the support 81, and the other end of the spring 84 is fixedly connected to the screen base 3. The spring 84 can support the support 81 through its elastic force.

[0024] The specific implementation process of this utility model is as follows: When it is necessary to protect the area during use, pull the pull ring rod 10. The pull ring rod 10 drives the positioning seat 11 to move and compresses the spring 12. When the positioning seat 11 is disengaged from the current positioning groove 13, the limit on the screen seat 3 can be released. Then, the screen seat 3 drives the lead glass 5 to move. During the movement, the screen seat 3 can be supported by the ball bearing 82, which makes the screen seat 3 easier to slide. When the lead glass 5 moves to the predetermined position, release the pull ring rod 10, and the spring 12 returns to its original position. The spring 12 can drive the positioning seat 11 to slide into the adjusted positioning groove 13 through its elasticity, thus completing the movement of the lead glass 5 and making it easier for the lead glass 5 to protect the operator.

[0025] 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 lead protective screen for a biological safety cabinet comprising a slide rail (2), characterized in that: The upper end of the sliding rail (2) is internally connected with a screen base (3), the upper end of the screen base (3) is fixedly connected with two symmetrically distributed stainless steel frames (4), the two stainless steel frames (4) are jointly bonded with lead glass (5), the upper end of the lead glass (5) is fixedly connected with a stainless steel frame (6), the inside of the screen base (3) is provided with a sliding mechanism (8), the front of the screen base (3) is fixedly connected with a positioning cover (9), the inside of the positioning cover (9) is slidably connected with a pull ring rod (10), one end of the pull ring rod (10) close to the sliding rail (2) is fixedly connected with a positioning seat (11), the outer side of the pull ring rod (10) is provided with a spring (12), the front of the sliding rail (2) is provided with a plurality of evenly distributed positioning grooves (13).

2. A lead protective screen for a biological safety cabinet according to claim 1, wherein: The lead glass (5) is fixedly connected with the screen base (3), and the positioning cover (9) is slidably connected with the sliding rail (2).

3. The lead protective screen for a biological safety cabinet according to claim 1, wherein: The outer side of the stainless steel frame (6) is slidably connected with two symmetrically distributed guide strips (7).

4. The lead protective screen for a biological safety cabinet according to claim 1, wherein: The positioning seat (11) is slidably connected with the positioning cover (9), and the positioning seat (11) is slidably connected with the positioning groove (13).

5. The lead protective screen for a biological safety cabinet according to claim 1, wherein: One end of the spring (12) is fixedly connected with the positioning cover (9), and the other end of the spring (12) is fixedly connected with the positioning seat (11).

6. A lead protective screen for a biological safety cabinet according to claim 1, wherein: The sliding mechanism (8) comprises a support (81), the inside of the screen base (3) is slidably connected with a support (81), the lower end of the support (81) is movably connected with a ball (82), the outer side of the ball (82) is movably connected with a limiting ring (83), the inside of the screen base (3) is provided with a spring (84), and the ball (82) is movably connected with the sliding rail (2).

7. A lead protective screen for a biological safety cabinet according to claim 6, wherein: The limiting ring (83) is fixedly connected with the screen base (3), one end of the spring (84) is fixedly connected with the support (81), and the other end of the spring (84) is fixedly connected with the screen base (3).

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