Folding ruler for wind speed detection and point distribution of biological safety cabinet

Abstract

The invention discloses a wind speed detection stationing folding ruler for a biosafety cabinet, and relates to the field of biosafety technology detection. The biological safety cabinet component comprises a biological safety cabinet; the folding ruler component comprises a folding unit arranged in the biosafety cabinet and a positioning hole penetrating through the end part of the folding unit, the folding unit is made of nickel-titanium alloy, and the folding unit can be recovered to a preset shape through heating or mechanical stimulation after deformation. A plurality of folding units are designed and then spliced to form the wind speed detection stationing folding ruler, the overall size of the folding ruler is changed to adapt to the stationing number of biosafety cabinets of different sizes, then wind speed detection is completed, and the problem that the stationing numbers of existing biosafety cabinets of different sizes are different is solved.

Description

Technical Field

[0001] The invention belongs to the technical field of biosafety, and in particular relates to a folding ruler for wind speed detection points in a biosafety cabinet. Background Art

[0002] A biosafety cabinet (BSC) is a specially designed laboratory equipment used to protect operators, laboratory environment and experimental samples from contamination when handling substances that may contain or produce biohazardous substances (such as bacteria, viruses, fungi, parasites, etc.). The biosafety cabinet is an indispensable safety equipment in biological laboratories and is crucial to protecting the health of laboratory workers and maintaining the safety of the environment inside and outside the laboratory.

[0003] The daily use of biological safety cabinets requires wind speed testing, and before the wind speed testing, points need to be set up inside the biological safety cabinet. Since there are many wind speed testing points in the biological safety cabinet and the number of points is different for biological safety cabinets of different sizes, the operation is very time-consuming.

[0004] To this end, we provide a biosafety cabinet wind speed detection point folding ruler to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a folding ruler for wind speed detection point distribution in a biological safety cabinet. A plurality of folding units are designed and then spliced ​​to form a folding ruler for wind speed detection point distribution. The overall size of the folding ruler is changed to adapt to the number of points of biological safety cabinets of different sizes, thereby completing the wind speed detection, thereby solving the problem of different numbers of points of existing biological safety cabinets of different sizes.

[0006] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0007] The present invention is a folding ruler for detecting wind speed of a biological safety cabinet, comprising biological safety cabinet components, including a biological safety cabinet;

[0008] The folding ruler component includes a folding unit arranged inside the biosafety cabinet and a positioning hole running through the end of the folding unit. The material of the folding unit is nickel-titanium alloy and can be restored to a preset shape through heating or mechanical stimulation after deformation.

[0009] The present invention is further configured such that the number of the folding units is set to 21, and the positioning holes are symmetrical about the midline of the folding units.

[0010] The present invention is further configured such that a plurality of the folding units are spliced ​​with each other using positioning holes to form 14 square grids.

[0011] The present invention is further configured such that the length of the folding unit is 180 mm, the width of the folding unit is 20 mm, and the distance between the positioning holes on each folding unit is 150 mm.

[0012] The present invention is further configured such that the square grid satisfies mm×mm.

[0013] The present invention is further configured such that the intersection point of each folding unit is a positioning hole, and the positioning holes are arranged to measure the wind speed. The positioning holes have three rows, with eight holes in each row, for a total of 24 measurement points.

[0014] The present invention is further configured such that the biosafety cabinet component further includes an observation panel fixed to the front side of the biosafety cabinet, a front window arranged inside the observation panel, and a pull rod fixed to the front end of the front window.

[0015] The present invention is further configured such that the front window is slidably connected to the observation plate, and the height of the front window is higher than the height from the bottom of the observation plate to the bottom of the biosafety cabinet, so as to achieve the purpose of completely sealing the biosafety cabinet.

[0016] The present invention has the following beneficial effects:

[0017] The present invention forms a folding ruler by splicing folding units, and completes the distribution of wind speed detection points by utilizing the connection of each folding unit. In addition, the sizes of the folding ruler spliced ​​by different numbers of folding units are different, resulting in different connection points, thereby changing the number of wind speed detection points, so that the folding ruler is suitable for biological safety cabinets of different sizes.

[0018] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0020] Figure 1 This is a schematic diagram of the structure of a folding ruler for wind speed detection in a biological safety cabinet.

[0021] Figure 2 This is a structural diagram of the wind speed of the biological safety cabinet and the folding ruler used in conjunction with each other.

[0022] Figure 3 Schematic diagram of the internal structure of the observation board.

[0023] Figure 4 This is a schematic diagram of the structure of the wind speed detection points for the biological safety cabinet.

[0024] Figure 5 A schematic diagram showing the arrangement and dimensions of a folding ruler.

[0025] Figure 6 Schematic diagram of the size structure of each unit of the folding ruler.

[0026] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0027] 100. Biosafety cabinet component; 101. Biosafety cabinet; 102. Observation panel; 103. Front window; 104. Pull rod; 200. Folding ruler component; 201. Folding unit; 202. Positioning hole. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] Example 1

[0030] See also Figure 1-6 , the present invention is a biosafety cabinet wind speed detection point folding ruler, including a biosafety cabinet component 100, including a biosafety cabinet 101;

[0031] The folding ruler component 200 includes a folding unit 201 disposed inside the biosafety cabinet 101 and a positioning hole 202 penetrating the end of the folding unit 201. The folding unit 201 is made of nickel-titanium alloy and can be restored to a preset shape through heating or mechanical stimulation after deformation.

[0032] Specifically, the number of folding units 201 is set to 21, the positioning holes 202 are symmetrical about the midline of the folding unit 201, and multiple folding units 201 are spliced ​​with each other using the positioning holes 202 to form 14 square grids. The length of the folding unit 201 is 180 mm, and the width of the folding unit 201 is 20 mm. The spacing between the positioning holes 202 on each folding unit 201 is 150 mm, and the square grid meets 100-200 mm × 100-200 mm. The intersection point of each folding unit 201 is the positioning hole 202. The positioning holes 202 are arranged for wind speed measurement. There are 3 rows of positioning holes 202, 8 in each row, and a total of 24 measurement points.

[0033] The operation process of this embodiment is as follows: 201 is made of nickel-titanium alloy, which can be restored to a preset shape by heating or mechanical stimulation after deformation. The folding ruler component 200 made by the folding unit 201 is not only convenient for storage, but also can be quickly unfolded to a flat state to complete the layout of wind speed detection. In addition, the descending airflow grid or area should meet the following requirements: each measurement point is measured repeatedly 3 times; the area defined by the perimeter of the test point should not be less than 30% of the total area of ​​the plane; the distance between the boundary of the test area and the inner wall and the front window operation port of the safety cabinet is 150mm; when the safety cabinet is installed When the size of the entire cabinet cannot meet the requirement that the grid plane area is not less than 30%, the grid spacing should be measured from 150mm away from the inner wall and front window operating port of the safety cabinet; if the boundary of the test area is 150mm away from the inner wall and front window operating port of the safety cabinet, the above square grid spacing does not meet the spacing requirement of not less than 100mm, each row or each area should have at least 4 equidistant measurement points, and each measurement point should be measured repeatedly 3 times; when the inclined front window 103 of the safety cabinet has more than one nominal height, the different downdraft grids or areas that may exist should meet the above requirements.

[0034] Example 2

[0035] See also Figure 2 and Figure 3 On the basis of Example 1, the biosafety cabinet component 100 further includes an observation panel 102 fixed to the front side of the biosafety cabinet 101 , a front window 103 disposed inside the observation panel 102 , and a pull rod 104 fixed to the front end of the front window 103 .

[0036] Specifically, the front window 103 is slidably connected to the observation plate 102 , and the height of the front window 103 is higher than the height from the bottom of the observation plate 102 to the bottom of the biosafety cabinet 101 , so as to achieve the purpose of completely sealing the biosafety cabinet 101 .

[0037] The operation process of this embodiment is as follows: an observation plate 102 is set to prevent the biosafety cabinet 101 from being completely opened, to prevent the experimental materials inside the biosafety cabinet 101 from being contaminated, and to prevent the experimental materials inside the biosafety cabinet 101 from leaking and causing harm to the health of the staff. The observation plate 102 is made of transparent material. During the experiment, relevant personnel can observe the progress inside the biosafety cabinet 101 very well. In addition, the sliding plate 103 is slidably connected to the inside of the observation plate 102, so that the biosafety cabinet 101 can be opened conveniently and risk detection points can be arranged inside. In addition, by setting the pull rod 104, it is convenient for the staff to perform relevant operations on the sliding plate 103.

[0038] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0039] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. Folding ruler for wind speed detection of biological safety cabinet, characterized by: include, A biological safety cabinet component (100), comprising a biological safety cabinet (101); The folding ruler component (200) comprises a folding unit (201) arranged inside the biosafety cabinet (101), and a positioning hole (202) penetrating the end of the folding unit (201); the folding unit (201) is made of nickel-titanium alloy and can be restored to a preset shape through heating or mechanical stimulation after deformation.

2. The biosafety cabinet wind speed detection point folding ruler according to claim 1 is characterized in that: The number of the folding units (201) is set to 21, and the positioning holes (202) are symmetrical about the midline of the folding unit (201).

3. The folding ruler for wind speed detection of biological safety cabinet according to claim 2, characterized in that: The plurality of folding units (201) are spliced ​​together using positioning holes (202) to form 14 square grids.

4. The foldable ruler for wind speed detection of a biological safety cabinet according to claim 3, characterized in that: The length of the folding unit (201) is 180 mm, the width of the folding unit (201) is 20 mm, and the spacing between the positioning holes (202) on each folding unit (201) is 150 mm.

5. The foldable ruler for wind speed detection of biological safety cabinet according to claim 4, characterized in that: The square grid satisfies (100-200) mm×(100-200) mm.

6. The folding ruler for wind speed detection of a biological safety cabinet according to claim 5, characterized in that: The intersection point of each folding unit (201) is a positioning hole (202), and the positioning holes (202) are wind speed measurement points. The positioning holes (202) have three rows, with eight holes in each row, for a total of 24 measurement points.

7. The foldable ruler for wind speed detection of a biological safety cabinet according to claim 6, characterized in that: The biosafety cabinet component (100) further comprises an observation panel (102) fixed to the front side of the biosafety cabinet (101), a front window (103) arranged inside the observation panel (102), and a pull rod (104) fixed to the front end of the front window (103).

8. The folding ruler for wind speed detection of a biological safety cabinet according to claim 7, characterized in that: The front window (103) is slidably connected to the observation plate (102), and the height of the front window (103) is higher than the height from the lowest end of the observation plate (102) to the bottom end of the biosafety cabinet (101), so as to achieve the purpose of completely sealing the biosafety cabinet (101).

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