CN211706808U

CN211706808U - Biological safety cabinet with simplified structure for vertically moving front perspective window

Info

Publication number: CN211706808U
Application number: CN202020051738.1U
Authority: CN
Inventors: 周维华
Original assignee: Shanghai Ruiyang Purification Equipment Co ltd
Current assignee: Shanghai Ruiyang Purification Equipment Co ltd
Priority date: 2020-01-10
Filing date: 2020-01-10
Publication date: 2020-10-20
Anticipated expiration: 2030-01-10

Abstract

The utility model discloses a biological safety cabinet that has front portion perspective window vertical migration structure of simplification in second grade biological safety cabinet technical field, including the safety cabinet body, the front end one side of safety cabinet body has arranged in proper order and has rolled up spring assembly with the corresponding glass of door, it includes a roll spring and a mount pad to roll up spring assembly, roll up the spring pass through the mount pad with the front end top both sides of safety cabinet body are fixed mutually, roll up the end that stretches out of the automatic flexible roll spring copper sheet on the spring with glass's both sides are fixed mutually, the utility model discloses the overall dimension of biological safety cabinet can match laboratory door, and the business turn over is convenient, need not be again for biological safety cabinet business turn over laboratory and dismantle the door structure in room to produced installation component when having reduced a large amount of weight installations, thereby reduced manufacturing cost.

Description

Biological safety cabinet with simplified structure for vertically moving front perspective window

Technical Field

The utility model relates to a biological safety cabinet technical field of second grade especially relates to a biological safety cabinet with anterior perspective window vertical migration structure of simplification.

Background

The II-level biological safety cabinet is provided with a vertically moving front window, and aims to meet the requirements of entering and exiting an operation cabin of experimental equipment and the requirement of extending a hand of a worker during sample operation. The rated opening height of the front window and the flow of the inflowing airflow can determine the flow rate of the inflowing airflow, and the airflow with the flow rate forms a barrier of the internal environment and the external environment and is an important physical condition of a safety protection factor of the biological safety cabinet.

In the prior art, most of the movable front windows of the same type of products adopt a heavy hammer balance design (see fig. 6-10), and also have a design structure that a motor drives the front window to lift. The weight balance design structure is that a weight with the same weight as the perspective glass is arranged at the rear side of the biological safety cabinet, and the weight can stay at any height position in the stroke range when the perspective glass moves. The design is that a pulley block is arranged between the glass and the heavy hammer, a steel wire embedded in the pulley block is locked at a glass lifting node at one end, and is locked at a heavy hammer lifting point at the other end, the structure is simple and convenient, and the use reliability is high. However, the weight balance structure protrudes out of the rear side surface of the exposed cabinet body, so that the overall dimension of the biological safety cabinet is increased, and the biological safety cabinet cannot enter a laboratory door due to slightly larger dimension. A common failure of weight balance is wire breakage. Another motor-driven front window lift design has been used in a limited number of applications, and while this design reduces the labor intensity of the user, it presents a safety risk. The safety risk is mainly from fault conditions or power loss conditions, the danger of the safety risk can be extremely serious, the danger hazard can cause diseases for operators when the danger hazard is light, and the danger can cause death of the operators when the danger hazard is serious. Because a large amount of pathogenic microorganisms exist in the biological safety cabinet, the front operation opening cannot be closed when the biological safety cabinet is in failure or loses power, and the pathogenic microorganisms escape through the front opening to form risk hazard.

Based on this, the utility model designs a biosafety cabinet with a simplified front perspective window vertical movement structure to solve the above problems.

Disclosure of Invention

In order to solve present weight balanced structure salient in the rear side surface that exposes the cabinet body, increased biosafety cabinet's overall dimension, often can not advance the door of laboratory because of the size is slightly big to there are a large amount of pathogenic microorganisms in biosafety cabinet inside, can not close anterior operation mouth when opening through the motor because of trouble or losing electricity, pathogenic microorganism is through the problem that anterior opening escaped and constitute risk hazard, the utility model aims at providing a biosafety cabinet with anterior perspective window vertical migration structure of simplification.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

biological safety cabinet with anterior perspective window vertical migration structure of simplification, including the safety cabinet body, the front end one side of safety cabinet body has arranged in proper order and has rolled up spring assembly with the corresponding glass of door, it includes roll spring and mount pad to roll up spring assembly, roll up the spring pass through the mount pad with the front end top both sides of safety cabinet body are fixed mutually, roll up the end that stretches out of the spring copper sheet that can stretch out and draw back automatically on the spring with glass's both sides are fixed mutually.

Preferably, a sliding chute used for limiting and moving the glass up and down is formed in one side of the front end of the safety cabinet body, and an included angle range between the length direction of the sliding chute and the height direction of the safety cabinet body is smaller than 10 degrees.

Preferably, both sides of the glass are fixed with protective shells, one side of the top of each protective shell is fixed with a glass hanging ring, and the connecting end of the coiled spring copper sheet is provided with a fixing wire hole used for connecting the glass hanging rings.

Preferably, the mounting seat comprises a i-shaped frame for sleeving the coil spring, a shaft pin for inserting and fixing the i-shaped frame, and a bracket welded and fixed with the safety cabinet body, and the i-shaped frame is mounted on the inner side of the bracket.

Preferably, a handle is symmetrically fixed at the bottom of one side of the front end of the glass.

Compared with the prior art, the utility model discloses the beneficial effect who realizes: firstly, the external dimension of the biological safety cabinet can be matched with a laboratory door, the biological safety cabinet is convenient to enter and exit, and the door structure of the room is not required to be disassembled for the biological safety cabinet to enter and exit the laboratory; secondly, the naked heavy hammer and the structural parts thereof are eliminated, and the whole biological safety cabinet is more beautiful and harmonious; in addition, the pulley block and the steel wire are eliminated by the direct connection structure between the coil spring and the hanging groove, and the single fault that the steel wire slides out of the pulley groove or is disconnected due to long-term friction of the steel wire does not occur; the installation components generated during the installation of a large number of heavy hammers are reduced, so that the manufacturing cost is reduced.

Drawings

The invention is described in further detail below with reference to the following figures and detailed description:

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of the coil spring of the present invention;

FIG. 3 is an enlarged view of the glass part of the present invention;

FIG. 4 is an enlarged view of the present invention taken at A in FIG. 3;

FIG. 5 is a view showing the connection between the coil spring and the glass according to the present invention;

fig. 6-10 are schematic diagrams of prior art structures.

In the drawings, the components represented by the respective reference numerals are listed below:

1-safety cabinet body, 2-glass, 3-coil spring device, 4-coil spring, 5-mounting seat, 6-coil spring copper sheet, 7-chute, 8-protective shell, 9-glass hanging ring, 10-fixing screw hole, 11-I-shaped frame, 12-shaft pin, 13-bracket and 14-handle.

Detailed Description

The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.

Please refer to fig. 1 to 5. The utility model provides a technical scheme: biological safety cabinet with anterior perspective window vertical migration structure of simplification, including safety cabinet body 1, the front end one side of safety cabinet body 1 has arranged in proper order and has rolled up spring assembly 3 with the corresponding glass 2 of door, it includes roll spring 4 and mount pad 5 to roll up spring assembly 3, roll spring 4 through mount pad 5 with safety cabinet body 1's front end top both sides are fixed mutually, roll up the end that stretches out of the last automatically flexible roll spring copper sheet 6 of spring 4 with glass 2's both sides are fixed mutually.

It should be noted that, when the safety cabinet body 1 is used to open and close the glass 2 in front of the door, the vertical moment of the coil spring 4 should be XN when the weight of the glass 2 is XN, and the vertical weights of the two sides are equal to obtain balance under this condition, so that the opening and closing of the glass 2 at the door position can be conveniently realized, the manufacturing cost and the inconvenience in use due to the addition of the weight device are reduced, and the maximum opening height is set when the glass 2 is longitudinally opened and closed at the front side of the safety cabinet body 1, and the height value of the maximum opening height is not specifically specified, but it should satisfy the passing in and out of experimental equipment, instruments and the like, such as a centrifuge and the like. Typically, the maximum opening height should be up to 400 mm.

In a further embodiment, a sliding chute 7 for limiting the glass 2 to move up and down is formed in one side of the front end of the safety cabinet body 1, and the range of an included angle between the length direction of the sliding chute 7 and the height direction of the safety cabinet body 1 is less than 10 degrees; the glass 2 is actually attached to the inclined plane at the front part of the cabinet body to move up and down, the inclined angle is preferably 5 degrees, and the inclined angle increases the friction resistance, because the gravitational potential energy of the glass is changed when the glass moves up and down, and the vertical moment of the coil spring is corrected to the moment value required by balance. Because the inclination angle is only 5 degrees, the correction can be finely adjusted, and because the medium friction resistance at the joint of the glass hanging groove and the cabinet body is different, the correction needs to be obtained by debugging, and the description is not repeated.

In a further embodiment, both sides of the glass 2 are fixed with a protective shell 8, one side of the top of the protective shell 8 is fixed with a glass hanging ring 9, and the connecting end of the coiled spring copper sheet 6 is provided with a fixing wire hole 10 for connecting the glass hanging ring 9; it should be explained that the length of the locking connection between the coil spring 4 and the glass hanging ring 9 is a control point of the glass stroke range, and the length is determined according to the maximum opening height stroke when the glass is opened.

In a further embodiment, the mounting seat 5 comprises a i-shaped frame 11 for sleeving the coil spring 4, a shaft pin 12 for inserting and fixing the i-shaped frame 11, and a bracket 13 welded and fixed with the safety cabinet body 1, wherein the i-shaped frame 11 is mounted on the inner side of the bracket 13; can be convenient for realize the installation and the fixed work of rolling up spring 4 on safety cabinet body 1, be convenient for to the stability protection when glass 2 removes.

In a further embodiment, a handle 14 is symmetrically fixed at the bottom of one side of the front end of the glass 2; the glass 2 can be moved manually to open and close the bin door conveniently.

It should be understood that the structure, ratio, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention has no technical essential meaning, and any structure modification, ratio relationship change or size adjustment should still fall within the scope that the technical content disclosed in the present invention can cover without affecting the function that the present invention can produce and the purpose that the present invention can achieve. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be made without substantial technical changes, and the present invention is also regarded as the scope of the present invention.

The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims

1. Biological safety cabinet with anterior perspective window vertical migration structure of simplification, its characterized in that: including safety cabinet body (1), glass (2) and book spring assembly (3) corresponding with the door have been arranged in proper order to front end one side of safety cabinet body (1), it includes roll spring (4) and mount pad (5) to roll up spring assembly (3), roll spring (4) through mount pad (5) with the front end top both sides of safety cabinet body (1) are fixed mutually, roll the end that stretches out of the spring copper sheet (6) that can stretch out and draw back automatically on spring (4) with the both sides of glass (2) are fixed mutually.

2. The biosafety cabinet with a simplified structure for vertically moving a front transparent window according to claim 1, wherein: the glass safety cabinet is characterized in that a sliding chute (7) used for limiting and moving the glass (2) up and down is formed in one side of the front end of the safety cabinet body (1), and the included angle range between the groove length direction of the sliding chute (7) and the height direction of the safety cabinet body (1) is smaller than 10 degrees.

3. The biosafety cabinet with a simplified structure for vertically moving a front transparent window according to claim 2, wherein: both sides of glass (2) all are fixed with protective housing (8), top one side of protective housing (8) is fixed with glass rings (9), the link of rolling up spring copper sheet (6) is seted up and is used for connecting fixed silk hole (10) of glass rings (9).

4. The biosafety cabinet with a simplified structure for vertically moving a front transparent window according to claim 1, wherein: the mounting seat (5) comprises an I-shaped frame (11) used for sleeving the rolling spring (4), a shaft pin (12) used for inserting and fixing the I-shaped frame (11) and a support (13) welded and fixed with the safety cabinet body (1), and the I-shaped frame (11) is mounted on the inner side of the support (13).

5. The biosafety cabinet with a simplified structure for vertically moving a front transparent window according to claim 1, wherein: the bottom of one side of the front end of the glass (2) is symmetrically fixed with a handle (14).