RU225986U1 - Glass lifting mechanism for protective laboratory equipment - Google Patents

Abstract

The utility model relates to devices for fastening and moving glass on the front panel of microbiological safety boxes, laminar flow shelters, fume hoods, mini-environments, dust-free abacterial air boxes. A mechanism for lifting the glass of the front panel of protective laboratory equipment, containing contains a system of cables, which is attached to the hoist device through a system of rollers, while brackets are attached to the side ends of the glass, to which the system of cables is attached, and the points of attachment of the cables to the brackets are located at a distance from the top edge glass The technical result is an increase in the range of raising and lowering the front glass of protective laboratory equipment. 3 salary f-ly, 6 ill.

Description

The utility model relates to devices for fastening and moving glass on the front panel of microbiological safety boxes, laminar flow shelters, fume hoods, mini-environments, dust-free abacterial air boxes designed to protect work materials from external and cross-contamination and/or protect the operator and the environment (hereinafter referred to as Protective Laboratory Equipment).

The designs of protective laboratory equipment currently use several types of mechanisms for opening/closing the glass front panel: sliding, hinged, using gas lifts. However, the use of such designs of the front panels of the box has a number of disadvantages, which include the impossibility of completely covering the working opening (for example, for the purposes of UV irradiation treatment), as well as the inability to carry out high-quality sanitary treatment in hard-to-reach places of the working chamber and the front glass panel on the working side chambers (for example, the upper inner part).

The mechanism for lifting the glass of the front panel of the box is known from the prior art, presented in the source http://www.laminar.ru/product/series/lab/box-2a-klass/slsh-am/ (accessed page 09/01/2023) . The front panel (front glass) is weightless due to the fastening of a system of cables connected to the counterweight system to the glass itself, so it is easily fixed at the required height. A disadvantage of the design of this glass is the presence of cable fastenings to the glass near, almost at the very top edge of the glass in the operator's field of vision.

The technical task of the proposed utility model is aimed at ensuring effective sanitary treatment of the inner surface of the working chamber of the box and the inner surface of the glass.

The technical result of the proposed solution is aimed at increasing the range of raising and lowering the front glass of protective laboratory equipment.

The technical result is achieved by the fact that the mechanism for lifting the glass of the front panel of protective laboratory equipment contains a system of cables, which is attached to the hoist device through a system of rollers. At the side ends of the glass there are brackets, to which a system of cables is attached, and the points of attachment of the slings to the brackets are located at a distance from the upper edge of the glass.

In a particular case of execution, the brackets are designed to cover the glass from the outer and/or inner surface.

In a particular case of execution, the telpher device is made in the form of a counterweight or an electric drive.

The brackets are attached to the glass using sealant and a bolt connection or a special protrusion extended beyond the lower border of the front glass.

For effective sanitary treatment of the inner surface of the working chamber of the box and the inner surface of the glass, it is necessary that the glass can be raised and lowered within a wide range, taking into account the volume of the working chamber.

The technical result is achieved in that the mechanism for lifting the glass of the front panel of protective laboratory equipment (hereinafter referred to as the box) contains a fastening system using glass brackets, to which is attached a system of cables connected through rollers to a hoist device, and the points of attachment of the cables to the brackets are located at a distance from the top edge glass The brackets are attached near the side edges of the glass (out of the operator’s visibility range), and the attachment points of the cables are located at a distance from the upper edge of the glass, which allows, on the one hand, when lifting the glass, to move its upper edge beyond the box dimensions so that the lower edge of the glass extends beyond limits of the upper border of the working chamber, thereby providing access to the upper part of the working chamber, and on the other hand, lower the glass down so that between the upper edge of the glass and the upper border of the working chamber there is a free space sufficient for disinfection of the upper inner part of the glass. Glass brackets can be attached to the glass using sealant and a bolt connection, or a protrusion extended beyond the lower border of the front glass.

The proposed system for fastening glass to the cables of the lifting mechanism, in which the glass brackets are located near the side edges of the glass (out of the operator’s visibility range), and the attachment points of the brackets to the cables are not on the upper edge of the glass, but at a distance from it, allows:

- ensure full lifting of the glass along the front opening of the working chamber of the box, i.e. it is ensured that the lower edge of the glass is raised above the level of the upper boundary of the working chamber opening, minimizing the height of the filter module of the box (i.e. the part that is located above the working chamber). This makes it possible to sanitize the upper edge of the glass and ensures the convenience of sanitizing the entire volume of the working chamber.

- when the glass is completely lowered, ensure the presence of a special sanitary opening between the upper edge of the glass and the upper border of the opening of the working chamber, which is not blocked by cables or tapes and fastening elements of the glass to the cables (cables and fastening elements are located outside the operator’s visibility zone), which also allows for maximum effectively sanitize the top of the glass, which is not possible in many other movable glass designs.

The essence of the glass fastening mechanism is illustrated by graphic material, where in Fig. Figure 1 shows the glass, as well as the cable mounting brackets.

In fig. Figure 2 shows a microbiological safety box with glass installed in the upper limit position. It can be seen that the upper edge freely rises above the upper level of the box, while completely opening the opening of the working chamber.

In fig. Figure 3 shows a microbiological safety box with glass set to the lower limit position. It can be seen that the upper edge of the glass extends below the upper edge of the working chamber, thereby creating space for sanitary treatment of the upper inner part of the glass. At the same time, the glass fastening elements (brackets and cables) are hidden from the user (do not interfere with sanitary processing).

Fig.4 is a side section of the box with a cable and a counterweight; Fig. 5 - side section of a box with an electric drive, in FIG. 6 - enlarged view A of FIG. 4.

In Fig.1-Fig. 6 positions indicate the following elements: 1 - glass, 1' - lower edge of the glass, 1'' - upper edge of the glass, 2 - cable, 3 - glass bracket, 4 - point of attachment of the cable to the glass, 5 - box, 6 - roller, 6' - coil, 7 - projection of the glass working position sensor, 8 - glass working position sensor, 9 - counterweight, 10 - electric drive.

Assembly of the fastening system begins with the installation of the system with cable 2 on the protective equipment. Next, the glass brackets 3 are installed on the glass surface 1, the working position sensor protrusion 7 is attached to the bracket, and the sensor 8 is attached to the glass guide. Next, glass 1 with brackets 3 is installed on box 5 and connected by means of cables 2 through rollers 6 with a counterweight 9 (Fig. 4). In this case, on the glass brackets 3 at the attachment point of the cables 2 (Fig. 6), in a particular case of execution, the mating parts (protrusions 7) of the glass working position sensors can be fixed, which are installed with the possibility of contacting with the corresponding glass working position sensor 8 mounted on the guide working chamber of box 5.

In the case when a box with automated raising/lowering of the glass is needed (Fig. 5), then cables 2 are pre-wound on the electric drive shaft 10, passed through a reel 6' and then attached to the bracket 3.

Manipulations with glass, the mobility of which is ensured by a counterweight, are carried out by moving the glass using handles on the lower edge of the glass. Manipulations with the glass, the mobility of which is ensured through the use of a motorized shaft, is ensured by pressing the corresponding keys on the control panel.

The proposed glass lifting mechanism ensures effective sanitization of the inner surface of the working chamber of the box and the inner surface of the glass by increasing the range of raising and lowering the front glass of protective laboratory equipment.

Claims (4)

1. A mechanism for lifting the glass of the front panel of protective laboratory equipment, containing a system of cables, which is attached to a telpher device through a system of rollers, characterized in that brackets are attached to the side ends of the glass, to which the system of cables is attached, and the points of attachment of the cables to the brackets are located at a distance from the top edge of the glass. 2. The mechanism for lifting the glass of the front panel according to claim 1, characterized in that the brackets are designed to cover the glass from the outer and/or inner surface. 3. The mechanism for lifting the glass of the front panel according to claim 1, characterized in that the telpher device is made in the form of a counterweight or in the form of an electric drive. 4. The mechanism for lifting the glass of the front panel according to claim 1, characterized in that the glass brackets are attached to the glass using sealant and a bolt connection or a special protrusion extended beyond the lower border of the front glass.