CN113275352B - Laboratory exhaust cabinet variable air volume control system - Google Patents
Laboratory exhaust cabinet variable air volume control system Download PDFInfo
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- CN113275352B CN113275352B CN202110607451.1A CN202110607451A CN113275352B CN 113275352 B CN113275352 B CN 113275352B CN 202110607451 A CN202110607451 A CN 202110607451A CN 113275352 B CN113275352 B CN 113275352B
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- air
- fixedly connected
- partition plate
- plate
- air supply
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
- B08B15/02—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area using chambers or hoods covering the area
- B08B15/023—Fume cabinets or cupboards, e.g. for laboratories
Abstract
The invention belongs to the technical field of exhaust cabinets, and particularly relates to a variable air volume control system of a laboratory exhaust cabinet. According to the invention, when an operator opens the operation window, the rapid reduction of the exhaust flow of the cabinet body is avoided, and the harmful gas in the cabinet body is prevented from being exhausted from the operation window, so that the harmful gas is effectively prevented from escaping from the operation window when the operator operates, and the safety of the operator is protected.
Description
Technical Field
The invention relates to the technical field of exhaust cabinets, in particular to a laboratory exhaust cabinet variable air volume control system.
Background
The cabinet of airing exhaust wide application is in the operation of airing exhaust in various laboratories, and the harmful gas that produces when can effectually will testing discharges, but at actual operation's in-process, opens when the cabinet window of airing exhaust, and when the experimenter need operate through the window, the inside gas of the cabinet of airing exhaust escapes from operation window easily, endangers operating personnel safety in serious, for this reason needs the laboratory cabinet of airing exhaust variable air volume control system.
Disclosure of Invention
The laboratory exhaust cabinet variable air volume control system provided by the invention solves the problems in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
the laboratory exhaust cabinet variable air volume control system comprises a cabinet body, wherein an operation window is arranged on one side of the cabinet body, a supporting plate which is transversely arranged along the cabinet body is arranged below one side, extending into the cabinet body, of the operation window, an installation channel is arranged at one end, close to the operation window, of the supporting plate, a first partition plate which is arranged along the vertical direction is fixedly connected to the bottom of the supporting plate, an air volume regulating and controlling assembly which is in sliding sleeve joint with the installation channel is arranged at one side, close to the installation channel, of the first partition plate, and a second partition plate which is arranged in parallel to the supporting plate is fixedly connected to one side, far away from the air volume regulating and controlling assembly, of the first partition plate;
the air volume adjusting and controlling assembly comprises a side air supply cover, an opening is formed in the bottom of the side air supply cover, the side air supply cover is in sliding sleeve connection with the installation channel, an air adjusting unit I is in sliding sleeve connection with the inner side wall of one side, close to the first partition plate, of the side air supply cover, an air adjusting unit II sliding with the inner side wall of the bottom of the supporting plate is installed on one side, close to the first partition plate, of the side air supply cover, and a switching unit used for air volume adjustment is installed between the air adjusting unit I and the air adjusting unit II.
Preferably, the switching unit comprises a first pushing block fixedly connected with the bottom of the first air adjusting unit, a push rod with a trapezoidal structure is slidably connected below one side of the first pushing block close to the first partition plate, a holder with a U-shaped structure is fixedly connected to one end of the push rod far away from the first pushing block, the holder is arranged along the vertical direction, a stripper plate with a trapezoidal structure is sleeved on an internal slide way of the holder, a connecting plate fixedly connected with a side air supply cover is fixedly connected below one side of the stripper plate far away from the first partition plate, an inclined guide groove is formed in one side of the stripper plate extending into the holder, an adjusting shaft movably sleeved with the holder is sleeved on the internal slide way of the guide groove, an inclined air distributing plate is fixedly connected to one end of the adjusting shaft extending out of the holder, a higher end of the air distributing plate is hinged with an air baffle fixedly connected with the bottom of the supporting plate, and the air baffle is slidably connected with the side air supply cover, one side of the extrusion plate close to the first partition plate is abutted with a pushing frame which is of an L-shaped structure and is fixedly connected with the bottom of the second air adjusting unit.
Preferably, a first spring is fixedly connected between the pushing frame and the first partition plate, a second spring fixedly connected with the inner side wall of the top of the side air supply cover is fixedly connected to the top of one end, extending into the first air adjusting unit, of the side air supply cover, a third spring fixedly connected with the inner side wall of the bottom of the cabinet body is fixedly connected to the bottom of the side air supply cover, and a contact plate slidably connected with the inner side walls of the two sides of the operation window is mounted at the top of the side air supply cover.
Preferably, the inner side wall of one side of the side air supply cover, which is close to the first partition plate, is penetrated with a first air flow channel of a long strip-shaped structure distributed along the length direction of the first partition plate, the first air flow channel is obliquely and upwards arranged along the side air supply cover to the first partition plate, the supporting plate is penetrated with a second air flow channel of a long strip-shaped structure distributed along the length direction of the supporting plate, the second air flow channel is positioned between the first partition plates of the side air supply cover, and the second air flow channel is obliquely and upwards arranged along the side air supply cover to the first partition plate.
Preferably, the first partition plate is provided with a first exhaust pipe, and a second exhaust pipe fixedly connected with the cabinet body is arranged between the supporting plate and the second partition plate.
Preferably, the first air adjusting unit comprises a fixed connection strip, one side of the fixed connection strip is fixedly connected with a choke board distributed along the length direction of the fixed connection strip, the first air adjusting unit and the second air adjusting unit are consistent in structure, the bottom of the fixed connection strip of the first air adjusting unit is fixedly connected with the first pushing block, and the bottom of the fixed connection strip of the second air adjusting unit is fixedly connected with the pushing frame.
Preferably, the width of stripper plate diminishes from top to bottom gradually, and the inclined plane of stripper plate is located one side that the stripper plate is close to the propelling movement frame.
Preferably, the top of the cabinet body is provided with an air supply cover shell for gas emission, and the supporting plate penetrates through the air hole in the top of the partition plate.
In the present invention,
through the cabinet body, operation window, layer board, installation passageway, baffle one and the air volume regulation and control subassembly that set up for when operating personnel opened operation window, avoid the cabinet body to bleed air the flow and sharply descend, avoid the inside harmful gas of the cabinet body to discharge from operation window, thereby effectually prevent that harmful gas from escaping from operation window when operating personnel operates, protection operating personnel safety.
Drawings
FIG. 1 is a schematic structural view of a laboratory exhaust hood variable air volume control system according to the present invention;
FIG. 2 is a schematic view of a partially enlarged structure of a laboratory fume hood variable air volume control system according to the present invention;
FIG. 3 is a schematic structural diagram of the distribution of the extrusion plate, the adjusting shaft and the guide groove of the laboratory exhaust hood variable air volume control system according to the present invention;
fig. 4 is a schematic structural diagram of a first air adjusting unit and a second air adjusting unit of the laboratory exhaust hood variable air volume control system provided by the invention.
In the figure: the device comprises a cabinet body 1, an operation window 2, a supporting plate 3, a mounting channel 4, a first partition plate 5, an air volume regulating assembly 6, a second partition plate 7, a first airflow channel 8, a second airflow channel 9, a side air supply cover 61, a first air adjusting unit 62, a first pushing block 63, a pushing rod 64, a 65 retainer, a 66 extruding plate, a 67 connecting plate, a 68 adjusting shaft, a 69 guide groove, a 610 air distributing plate, a wind shielding plate 611, a 612 pushing frame, a second air adjusting unit 613, a 71 fixing strip and a 72 wind blocking plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-4, a laboratory exhaust cabinet variable air volume control system comprises a cabinet body 1, wherein an operation window 2 is arranged on one side of the cabinet body 1, a supporting plate 3 transversely arranged along the cabinet body is arranged below one side of the operation window 2 extending into the cabinet body 1, an installation channel 4 is arranged at one end, close to the operation window 2, of the supporting plate 3, a first partition plate 5 arranged along the vertical direction is fixedly connected to the bottom of the supporting plate 3, an air volume regulating and controlling component 6 slidably sleeved with the installation channel 4 is arranged on one side, close to the installation channel 4, of the first partition plate 5, and a second partition plate 7 arranged in parallel with the supporting plate 3 is fixedly connected to one side, far away from the air volume regulating and controlling component 6, of the first partition plate 5;
furthermore, air volume regulation and control subassembly 6 includes that the bottom is provided with the opening and slides the side air supply cover 61 that cup joints with installation passageway 4, and the side air supply cover 61 slides and has cup jointed first air distribution unit 62 near the inside wall of one side of baffle 5, and side air supply cover 61 is close to one side of baffle 5 and is installed and transfer second air distribution unit 613 that slides with layer board 3 bottom inside wall, and the switching unit that is used for air volume control is installed between first air distribution unit 62 and second air distribution unit 613.
Specifically, the switching unit comprises a first pushing block 63 fixedly connected with the bottom of a first air adjusting unit 62, a push rod 64 with a trapezoidal structure is slidably connected to the lower portion of one side of the first pushing block 63 close to a first partition plate 5, a holder 65 with a U-shaped structure is fixedly connected to one end of the push rod 64 far away from the first pushing block 63, the holder 65 is arranged along the vertical direction, a pressing plate 66 with a trapezoidal structure is sleeved on an inner slide way of the holder 65 along the vertical direction, a connecting plate 67 fixedly connected with a side air supply cover 61 is fixedly connected to the lower portion of one side of the pressing plate 66 far away from the first partition plate 5, an obliquely arranged guide groove 69 is formed in one side of the pressing plate 66 extending into the holder 65, an adjusting shaft 68 movably sleeved with the holder 65 is sleeved on the inner slide way of the guide groove 69, a switching waist hole arranged along the length direction of the holder 65 penetrates through the holder 65, the switching waist hole is slidably sleeved with the adjusting shaft 68, an obliquely arranged air distributing plate 610 is fixedly connected to one end of the adjusting shaft 68 extending out of the holder 65, the higher end of the air distributing plate 610 is hinged with an air baffle 611 fixedly connected with the bottom of the supporting plate 3, the air baffle 611 is connected with the side air supply cover 61 in a sliding mode, and one side, close to the first partition plate 5, of the extrusion plate 66 is abutted with a pushing frame 612 which is of an L-shaped structure and fixedly connected with the bottom of the second air adjusting unit 613.
Particularly, a first spring is fixedly connected between the pushing frame 612 and the first partition plate 5, a second spring fixedly connected with the inner side wall of the top of the side air supply cover 61 is fixedly connected to the top of one end, extending into the side air supply cover 61, of the first air adjusting unit 62, a third spring fixedly connected with the inner side wall of the bottom of the cabinet body 1 is fixedly connected to the bottom of the side air supply cover 61, and a contact plate slidably connected with the inner side walls of the two sides of the operation window 2 is installed on the top of the side air supply cover 61.
It should be noted that a first air flow channel 8 of a strip-shaped structure is arranged in the inner side wall of one side of the side air supply cover 61 close to the first partition plate 5 in a penetrating manner and distributed along the length direction of the side air supply cover, the first air flow channel 8 is arranged in an upward inclined manner along the side air supply cover 61 to the first partition plate 5, a second air flow channel 9 of a strip-shaped structure is arranged in the supporting plate 3 in a penetrating manner and distributed along the length direction of the supporting plate, the second air flow channel 9 is arranged between the side air supply covers 61 and the first partition plate 5 in an upward inclined manner, and the second air flow channel 9 is arranged in an upward inclined manner along the side air supply cover 61 to the first partition plate 5.
In addition, a first exhaust pipe is installed on the first partition plate 5, and a second exhaust pipe fixedly connected with the cabinet body 1 is installed between the supporting plate 3 and the second partition plate 7.
In addition, the first wind adjusting unit 62 comprises a fixed connection bar 71, one side of the fixed connection bar 71 is fixedly connected with a choke board 72 distributed along the length direction of the fixed connection bar, the first wind adjusting unit 62 and the second wind adjusting unit 613 are consistent in structure, the bottom of the fixed connection bar 71 of the first wind adjusting unit 62 is fixedly connected with the first pushing block 63, and the bottom of the fixed connection bar 71 of the second wind adjusting unit 613 is fixedly connected with the pushing frame 612.
As will be explained, the width of the pressing plate 66 is gradually reduced from top to bottom, and the inclined surface of the pressing plate 66 is located on the side of the pressing plate 66 close to the pushing frame 612.
And to be supplemented, an air supply housing for gas emission is arranged at the top of the cabinet body 1, and an air hole positioned at the top of the second partition plate 7 penetrates through the supporting plate 3.
The working principle is as follows: when the air quantity adjusting device is used, an operator firstly pushes the contact plate on the side air supply cover 61 on the air quantity adjusting component 6 downwards by hands, then the side air supply cover 61 moves downwards, at the moment, the side air supply cover 61 drives the connecting plate 67 to move downwards, so that the extrusion plate 66 moves downwards, on one hand, the inclined surface of the extrusion plate 66 pushes the pushing frame 612 towards the direction of the first partition plate 5, so that the second air adjusting unit 613 moves integrally, when the second air adjusting unit 613 moves, the choke plate 72 on the second air adjusting unit 613 moves away, so that the air quantity of the second air flow channel 9 is increased, when the extrusion plate 66 moves downwards, the adjusting shaft 68 positioned in the guide groove 69 moves upwards towards the direction of the second partition plate 7, so that the air distributing plate 610 deflects upwards, so that the air quantity on one side of the side air supply cover 61 is increased, and in addition, the adjusting shaft 68 adjusts the retainer 65 towards the direction of the second partition plate 7, so that the push rod 64 moves, afterwards, under the effect of the second spring at the top of the first air regulating unit 62, the first air regulating unit 62 moves along the length direction of the air volume regulating and controlling assembly 6, so that the opening of the first air flow channel 8 is enlarged, the air volume of the first air flow channel 8 is enlarged, and therefore the air volume of the upper portion of the first air flow regulating and controlling assembly 6 cannot be sharply reduced when the downward movement supporting plate 3 blocks the air volume, when an operating window is opened by an operator, the cabinet body is prevented from sharply reducing the air suction flow, the harmful gas in the cabinet body is prevented from being discharged from the operating window, the harmful gas is effectively prevented from escaping from the operating window when the operator operates, and the safety of the operator is protected.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (8)
1. The laboratory exhaust cabinet variable air volume control system comprises a cabinet body (1) and is characterized in that an operation window (2) is arranged on one side of the cabinet body (1), a supporting plate (3) transversely arranged along the cabinet body is installed below one side, extending into the cabinet body (1), of the operation window (2), an installation channel (4) is arranged at one end, close to the operation window (2), of the supporting plate (3), a first partition plate (5) arranged in the vertical direction is fixedly connected to the bottom of the supporting plate (3), an air volume regulating and controlling assembly (6) in sliding sleeve connection with the installation channel (4) is installed on one side, close to the installation channel (4), of the first partition plate (5), and a second partition plate (7) arranged in parallel to the supporting plate (3) is fixedly connected to one side, far away from the air volume regulating and controlling assembly (6), of the first partition plate (5);
air volume regulation and control subassembly (6) including the bottom be provided with the opening and with side air supply cover (61) that installation passageway (4) slip cup jointed, side air supply cover (61) are close to one side inside wall slip cup joint of baffle (5) and transfer wind unit (62), side air supply cover (61) are close to one side of baffle (5) install with layer board (3) bottom inside wall gliding transfer wind unit two (613), transfer wind unit (62) and transfer wind unit two (613) between install the transfer unit that is used for the air regulation.
2. The laboratory exhaust hood variable air volume control system according to claim 1, wherein the switching unit comprises a first push block (63) fixedly connected with the bottom of a first air adjusting unit (62), a push rod (64) with a trapezoidal structure is slidably connected to the lower portion of one side, close to the first partition plate (5), of the first push block (63), a holder (65) with a U-shaped structure is fixedly connected to one end, far away from the first push block (63), of the push rod (64), the holder (65) is arranged in the vertical direction, a compression plate (66) with a trapezoidal structure is sleeved on an inner slide way of the holder (65) in the vertical direction, a connecting plate (67) fixedly connected with the side air supply cover (61) is fixedly connected to the lower portion of one side, far away from the first partition plate (5), of the compression plate (66) extends into one side of the holder (65), a guide groove (69) which is obliquely arranged is formed, an adjusting shaft (68) movably sleeved on the inner slide way of the guide groove (69) is movably sleeved with the holder (65), the one end rigid coupling that adjusting shaft (68) stretched out holder (65) has air board (610) of dividing that the slope set up, the higher one end of air board (610) articulates has air board (611) with layer board (3) bottom rigid coupling, and air board (611) and side supply-air cover (61) sliding connection, and extrusion plate (66) are close to one side butt that baffle (5) have L type structure and with push frame (612) of adjusting wind unit two (613) bottom rigid coupling.
3. The laboratory fume hood variable air volume control system according to claim 2, wherein a first spring is fixedly connected between the pushing frame (612) and the first partition plate (5), a second spring fixedly connected with the inner side wall of the top of the side air supply hood (61) is fixedly connected to the top of one end of the first air adjusting unit (62) extending into the side air supply hood (61), a third spring fixedly connected with the inner side wall of the bottom of the cabinet body (1) is fixedly connected to the bottom of the side air supply hood (61), and contact plates slidably connected with the inner side walls of two sides of the operation window (2) are installed on the top of the side air supply hood (61).
4. The laboratory exhaust hood variable air volume control system according to claim 1, wherein a first air flow channel (8) with a strip-shaped structure is arranged through the inner side wall of one side of the side air supply hood (61) close to the first partition plate (5) in a penetrating manner along the length direction of the side air supply hood, the first air flow channel (8) is arranged obliquely and upwards from the side air supply hood (61) to the first partition plate (5), a second air flow channel (9) with a strip-shaped structure is arranged through the supporting plate (3) along the length direction of the supporting plate, the second air flow channel (9) is arranged between the side air supply hoods (61) and the first partition plate (5), and the second air flow channel (9) is arranged obliquely and upwards from the side air supply hood (61) to the first partition plate (5).
5. The laboratory exhaust hood variable air volume control system according to claim 1, wherein a first exhaust pipe is installed on the first partition plate (5), and a second exhaust pipe fixedly connected with the cabinet body (1) is installed between the supporting plate (3) and the second partition plate (7).
6. The laboratory fume hood variable air volume control system according to claim 2, wherein the first air adjusting unit (62) comprises a fixed connection strip (71), one side of the fixed connection strip (71) is fixedly connected with a choke plate (72) distributed along the length direction of the fixed connection strip, the first air adjusting unit (62) and the second air adjusting unit (613) are consistent in structure, the bottom of the fixed connection strip (71) of the first air adjusting unit (62) is fixedly connected with the first push block (63), and the bottom of the fixed connection strip (71) of the second air adjusting unit (613) is fixedly connected with the pushing frame (612).
7. The laboratory fume hood variable air volume control system according to claim 2, wherein the width of the extrusion plate (66) is gradually reduced from top to bottom, and the inclined surface of the extrusion plate (66) is located on one side of the extrusion plate (66) close to the pushing frame (612).
8. The laboratory exhaust hood variable air volume control system according to claim 1, wherein an air supply cover for air discharge is installed at the top of the cabinet body (1), and the supporting plate (3) penetrates through an air hole located at the top of the second partition plate (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110607451.1A CN113275352B (en) | 2021-06-01 | 2021-06-01 | Laboratory exhaust cabinet variable air volume control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110607451.1A CN113275352B (en) | 2021-06-01 | 2021-06-01 | Laboratory exhaust cabinet variable air volume control system |
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| Publication Number | Publication Date |
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| CN113275352A CN113275352A (en) | 2021-08-20 |
| CN113275352B true CN113275352B (en) | 2022-05-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110607451.1A Active CN113275352B (en) | 2021-06-01 | 2021-06-01 | Laboratory exhaust cabinet variable air volume control system |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116727399A (en) * | 2021-11-19 | 2023-09-12 | 北京北方华创微电子装备有限公司 | Cleaning chamber |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102476120A (en) * | 2010-11-23 | 2012-05-30 | 刘辉荣 | Novel fume hood |
| CN111195637A (en) * | 2020-03-10 | 2020-05-26 | 雷柏特（南通）实验室系统工程有限公司 | Novel interior tonifying wind exhaust cabinet |
| CN111229771A (en) * | 2020-03-09 | 2020-06-05 | 山东新华医疗器械股份有限公司 | Exhaust cabinet |
| CN111545546A (en) * | 2020-06-19 | 2020-08-18 | 深圳市新景环境技术有限公司 | Laboratory exhaust cabinet variable air volume adjusting method and adjusting device |
| CN112705545A (en) * | 2020-12-14 | 2021-04-27 | 天长市明辉实验设备有限公司 | Air volume adjustable laboratory ventilation cabinet |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10794605B2 (en) * | 2017-03-10 | 2020-10-06 | Siemens Schweiz Ag | Laboratory ventilation integration |
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2021
- 2021-06-01 CN CN202110607451.1A patent/CN113275352B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102476120A (en) * | 2010-11-23 | 2012-05-30 | 刘辉荣 | Novel fume hood |
| CN111229771A (en) * | 2020-03-09 | 2020-06-05 | 山东新华医疗器械股份有限公司 | Exhaust cabinet |
| CN111195637A (en) * | 2020-03-10 | 2020-05-26 | 雷柏特（南通）实验室系统工程有限公司 | Novel interior tonifying wind exhaust cabinet |
| CN111545546A (en) * | 2020-06-19 | 2020-08-18 | 深圳市新景环境技术有限公司 | Laboratory exhaust cabinet variable air volume adjusting method and adjusting device |
| CN112705545A (en) * | 2020-12-14 | 2021-04-27 | 天长市明辉实验设备有限公司 | Air volume adjustable laboratory ventilation cabinet |
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| CN113275352A (en) | 2021-08-20 |
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