CN218890973U - Side suction type fume chamber of airing exhaust down - Google Patents

Abstract

The utility model discloses a lower exhaust side suction type fume hood, which relates to the technical field of fume hoods and aims to solve the problems of poor structural compactness and low air circulation efficiency of the fume hood; the ventilating cabinet is illuminated by adopting the illumination device close to natural light, so that the colors can be clearly distinguished; the space of the lower cabinet of the fume hood is fully utilized, a section of ventilation pipeline is arranged, and the fume hood is provided with a self-cleaning device, so that harmless emission can be realized.

Description

Side suction type fume chamber of airing exhaust down

Technical Field

The utility model relates to the technical field of fume hoods, in particular to a lower exhaust side suction type fume hood.

Background

The cabinet type exhaust hood is commonly called as a fume hood, and is similar to a closed hood, a small part paint spraying cabinet and a chemical laboratory fume hood are typical structures of cabinet type exhaust hoods, and operators work in the cabinet and are mainly used for large part paint spraying, powder bagging and the like.

The traditional fume hood has the following defects:

most of the fume hoods are used for exhausting air, and the exhaust fans occupy extra space, so that the structural compactness of the fume hoods is poor;

the common use of the space at the lower part of the cabinet body is poor, and most of the fume hoods do not have the function of exhausting and self-cleaning;

the arrangement structure of the air inlet position and the air duct of the traditional fume hood is unreasonable, so that turbulent flow is easy to generate when gas flows, and the flow efficiency of the gas is reduced;

the present utility model aims to propose a technical solution to solve the above-mentioned problems.

Disclosure of Invention

In order to solve the above problems, that is, the problems proposed by the background art, the utility model provides a lower exhaust side suction type ventilation cabinet, which comprises an upper cabinet and a lower cabinet that are mutually spliced, wherein:

the inside of the upper cabinet is divided into a working space and an exhaust channel which are communicated with each other through a front air dividing plate, an air guide surface is arranged at the top of the inner wall of the upper cabinet, an observation window and an air inlet are also arranged on the upper cabinet, and the air inlet is horizontally arranged in a long strip shape;

the lower cabinet is internally provided with a negative pressure mechanism and a purifying mechanism, an air inlet of the negative pressure mechanism is communicated with the exhaust channel, and an air outlet of the negative pressure mechanism is communicated with the purifying mechanism.

The utility model is further provided with: the number of the air inlets is at least 1.

The utility model is further provided with: and a filter screen is further arranged on the air inlet.

The utility model is further provided with: the air guide surface is arc-shaped.

The utility model is further provided with: the purification mechanism comprises a first module, a second module and a third module for acid gas purification, alkaline gas purification and odor adsorption respectively.

The utility model is further provided with: and a lighting device is also arranged in the upper cabinet.

The utility model is further provided with: the illumination light of the illumination device is close to natural light.

The beneficial technical effects of the utility model are as follows: compared with the traditional top exhaust type, the ventilation cabinet provided by the utility model has the advantages that the space of the ventilation cabinet can be more effectively utilized, and the structural compactness of the ventilation cabinet is improved; the air duct and the air inlet are reasonably arranged, and air can be smoothly discharged along the air duct through the negative pressure mechanism after entering along the air inlet, so that the ventilation efficiency of the ventilation cabinet is improved; meanwhile, the ventilating cabinet is illuminated by adopting the illumination device close to natural light, so that the colors can be distinguished more clearly, and the requirements of special industries on color distinguishing are met; the space of the lower cabinet of the fume hood is fully utilized, a section of ventilation pipeline is arranged, and the fume hood is provided with a self-cleaning device, so that harmless emission can be realized.

Drawings

FIG. 1 shows a schematic diagram of the overall axial structure of the present utility model;

FIG. 2 shows a schematic view of the structure of the front air distribution plate and air guide surface of the present utility model;

fig. 3 shows a schematic view of the structure of the inside of the lower cabinet of the present utility model.

Reference numerals: 1-upper cabinet, 2-lower cabinet, 3-front air dividing plate, 4-air guide surface, 5-observation window, 6-air inlet, 7-negative pressure mechanism, 8-purifying mechanism and 9-lighting device.

Detailed Description

Preferred embodiments of the present utility model are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present utility model, and are not intended to limit the scope of the present utility model.

Examples:

referring to fig. 1-3, the utility model provides a lower exhaust side suction type fume hood, which is used as a place for certain reactions to ensure the physical health of staff and ensure the normal operation of the reactions.

The ventilation cabinet comprises an upper cabinet 1 and a lower cabinet 2 which are spliced with each other, wherein the interior of the upper cabinet 1 is divided into a working space and an exhaust channel which are communicated with each other through a front air dividing plate 3, the front air dividing plate 3 is a rectangular plate, a gap is reserved between the upper part of the front air dividing plate and the inner wall of the upper part of the upper cabinet 1, the gap is used for meeting the requirement of gas passing, an air guide surface 4 is reserved at the top of the inner wall of the upper cabinet 1, the air guide surface 4 plays a role in guiding air flow, the air guide surface 4 is in an arc shape, and an observation window 5 and an air inlet 6 are further arranged on the upper cabinet 1;

in the embodiment, the front air dividing plate is vertical to the table top, a frame is made of a 304 stainless steel square tube with the thickness of 20mm, and the surface of the frame is fixed by an anti-multiple plate;

the observation window 5 is an opening and closing window, is arranged on the side wall of the working space, can adopt sliding opening and closing, and limits the relative position between each opening and closing plate through limiting points, wherein the limiting points can be magnetic attraction points;

in this embodiment, the observation window 5 may be slidably connected to a predetermined sliding rail, and is longitudinally slid, and the longitudinal position of the observation window is limited by a magnetic attraction point, that is, the uppermost observation window 5 is fixed, the rest of the observation windows 5 may be slid to a position overlapping with the uppermost observation window 5, and the observation window 5 may be made of an acrylic plate with a thickness of 6 mm;

air enters into the interior of the upper cabinet 1 through the air inlet 6, the air inlet 6 is reserved, the observation window 5 can be completely closed when the fume hood is used, the use safety of the fume hood can be improved to a certain extent, and a filter screen is further arranged on the air inlet 6 so as to prevent dust and other impurities from entering into the interior of the upper cabinet 1.

The upper cabinet 1 is internally provided with the lighting device 9 which plays a role in lighting, so that a worker can observe the reaction in the upper cabinet 1 better;

in this embodiment, the lighting device 9 can simulate natural light to the greatest extent, and can adopt 965 two lamps, namely 2 lamps and 950 lamps, which are alternately distributed to form natural light to the greatest extent, and cover the PS Ling Jing plate outside, so that the irradiated light is not shaded and uniformly irradiated onto the ventilation cabinet table top, similar to the natural light, has the highest resolution, and can meet the work of high resolution required on the operation desk.

The lower cabinet 2 is internally provided with a negative pressure mechanism 7 and a purifying mechanism 8, an air inlet of the negative pressure mechanism 7 is communicated with an air exhaust channel, and an air outlet of the negative pressure mechanism 7 is communicated with the purifying mechanism 8;

the lower cabinet 2 is divided into two parts, one part is used for storing articles, the corresponding side wall is provided with a box door, and the other part is used for arranging a negative pressure mechanism 7;

the negative pressure mechanism 7 generates negative pressure, and is composed of a centrifugal fan and a gas collecting hood, wherein the gas collecting hood is arranged in the lower cabinet 2 in an inverted splayed shape, and two ends of the gas collecting hood are respectively communicated with an inlet of the centrifugal fan and an exhaust channel, so that the inverted splayed gas collecting hood can perform efficient gas collecting work, and the gas circulation efficiency is improved;

the gas collecting hood is made of PP material and welded by a PP welding rod;

the purifying mechanism 8 comprises a first module, a second module and a third module for acid gas purification, alkaline gas purification and peculiar smell adsorption respectively;

the first module may be a container for storing an alkaline solution, such as a NAOH solution, the second module may be a container for storing an acid solution, such as a concentrated H2SO4 solution, and the third module may be an activated carbon filtration module.

While the utility model has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the utility model, and in particular, the technical features set forth in the various embodiments may be combined in any manner so long as there is no structural conflict. The present utility model is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

In the description of the present utility model, terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like, which indicate a direction or a positional relationship, are based on the direction or the positional relationship shown in the drawings, are merely for convenience of description, and do not indicate or imply that the apparatus or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus are not to be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, it should be noted that, in the description of the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those skilled in the art according to the specific circumstances.

The terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, article, or apparatus/means that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, article, or apparatus/means.

Thus far, the technical solution of the present utility model has been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of protection of the present utility model is not limited to these specific embodiments. Equivalent modifications and substitutions for related technical features may be made by those skilled in the art without departing from the principles of the present utility model, and such modifications and substitutions will fall within the scope of the present utility model.

Claims (7)

1. A side suction type fume chamber of airing exhaust down, its characterized in that:

an upper cabinet (1) and a lower cabinet (2) which are mutually spliced, wherein:

the inside of the upper cabinet (1) is divided into a working space and an exhaust channel which are communicated with each other through a front air dividing plate (3), an air guide surface (4) is arranged at the top of the inner wall of the upper cabinet (1), an observation window (5) and an air inlet (6) are also arranged on the upper cabinet (1), and the air inlet (6) is horizontally arranged in a long strip shape;

the air inlet of the negative pressure mechanism (7) is communicated with the exhaust channel, and the air outlet of the negative pressure mechanism (7) is communicated with the purifying mechanism (8).

2. A bottom draft sidedraw fume hood according to claim 1 wherein: the number of the air inlets (6) is at least 1.

3. A bottom draft sidedraw fume hood according to claim 2 wherein: and a filter screen is further arranged on the air inlet (6).

4. A bottom draft sidedraw fume hood according to claim 1 wherein: the air guide surface (4) is arc-shaped.

5. A bottom draft sidedraw fume hood according to claim 1 wherein: the purification mechanism (8) comprises a first module, a second module and a third module for acid gas purification, alkaline gas purification and odor adsorption, respectively.

6. A bottom draft sidedraw fume hood according to claim 1 wherein: an illumination device (9) is also arranged in the upper cabinet (1).

7. A bottom draft sidedraw hood according to claim 6 wherein: the illumination light of the illumination device (9) is natural light.

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