CN215236655U

CN215236655U - Novel fume chamber in laboratory

Info

Publication number: CN215236655U
Application number: CN202120267795.8U
Authority: CN
Inventors: 叶燕华
Original assignee: Xiamen Zuoyi Purification Engineering Co ltd
Current assignee: Xiamen Zuoyi Purification Technology Co ltd
Priority date: 2021-02-01
Filing date: 2021-02-01
Publication date: 2021-12-21
Anticipated expiration: 2031-02-01

Abstract

The utility model discloses a novel laboratory ventilation cabinet, which belongs to the technical field of laboratory ventilation cabinets and comprises a cabinet body, a cavity, an air suction hood, a sliding door, an air exhauster and a negative pressure pipeline, wherein the negative pressure pipeline is connected with the air exhauster, the air suction hood is communicated with the negative pressure pipeline, the sliding door is arranged at the front opening of the cavity, the bottom of the cavity forms an operation table, the bottom of the operation table is provided with a first gas collection cavity, the top of the first gas collection cavity is provided with a first air draft cover, the side wall of the first gas collection cavity is provided with a plurality of connecting pipes, the other ends of the connecting pipes are communicated with the negative pressure pipeline, the bottom of the inner wall of the cavity is provided with a second air draft cover, the second air draft cover is communicated with the negative pressure pipeline, the bottom of the sliding door is provided with a third gas collection cavity, the third gas collection cavity is provided with a plurality of gas collection holes, a gas collection hose for communicating the third gas collection cavity and the negative pressure pipeline is arranged in the installation cavity, and a retraction mechanism for collecting or vertically releasing the gas collection hose is arranged in the installation cavity, the utility model has the advantages of furthest reducing the loss of gas and fully protecting the personal safety of users.

Description

Novel fume chamber in laboratory

Technical Field

The utility model relates to a laboratory fume chamber technical field specifically is a novel fume chamber in laboratory.

Background

The fume hood is a local air exhaust device which is most commonly used in laboratories and is of various types, and due to different structures, the use conditions are different, the air exhaust effect is different, and the performance of the fume hood is good and mainly depends on the speed of air movement through the fume hood.

Among the prior art, the fume chamber mainly includes the cabinet body, cavity, push-and-pull door, air exhauster and negative pressure pipeline, the gas flow mainly connect outside negative pressure pipeline through the ventilation pipe of installing at the fume chamber top and bleed and exhaust, negative pressure pipeline connection air exhauster, air exhauster during operation negative pressure pipeline produces the negative pressure, takes out the gas in the fume chamber.

However, when the sliding door of fume chamber was opened to the user of service, the gaseous intercommunication among the gaseous and the external environment of the inside cavity of fume chamber, suction that air exhauster and negative pressure pipeline produced was not enough to take out the gas of cavity bottom, consequently leads to gaseous loss towards user of service one side easily, if what produce in the fume chamber is toxic gas, then causes the threat to user of service's personal safety easily.

Based on this, the utility model designs a novel fume chamber in laboratory to solve above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a novel fume chamber in laboratory to solve above-mentioned technical problem.

In order to achieve the above object, the utility model provides a following technical scheme: a novel laboratory ventilation cabinet comprises a cabinet body, a cavity, an air suction hood, a sliding door, an air exhauster and a negative pressure pipeline, wherein the negative pressure pipeline is arranged at the upper end of the cabinet body and connected with the air exhauster, the air suction hood is arranged at the bottom of an installation cavity at the top in the cavity and communicated with the negative pressure pipeline, the sliding door is arranged at the front opening of the cavity and used for sliding to close the cavity, the bottom of the cavity forms an operation table, a first air collection cavity is arranged at the bottom of the operation table, a first air draft cover communicated with the cavity is arranged at the top of the first air collection cavity, a plurality of connecting pipes are arranged on the side wall of the first air collection cavity, the other ends of the connecting pipes extend into the installation cavity and are communicated with the negative pressure pipeline, a second air draft cover is arranged at the bottom of the inner wall of the cavity and is communicated with the negative pressure pipeline through the second air collection cavity arranged on the inner wall of the cavity, and a third air collection cavity is arranged at the bottom of the sliding door, the side wall and the bottom of the third gas collection cavity facing the cavity are provided with a plurality of gas collection holes, a gas collection hose for communicating the third gas collection cavity with the negative pressure pipeline is arranged in the installation cavity, and a retraction mechanism for accommodating or vertically releasing the gas collection hose is arranged in the installation cavity.

Preferably, the first draught hood is long and is arranged at one side of the bottom of the cavity close to the sliding door, and the first draught hood is parallel to the bottom of the sliding door.

Preferably, the second gas collecting cavity forms a gas collecting port at the bottom of the inner wall of the cavity, the second exhaust hood comprises a fixing part fixedly connected with the middle part of the gas collecting port and a beam collecting part arranged at one end of the fixing part far away from the gas collecting port, the beam collecting part is in a thin plate shape and has a gap with the inner wall of the cavity, and gas enters the gas collecting port and the second gas collecting cavity through the gap.

Preferably, the number of the gas collection hoses is two, and the two gas collection hoses are respectively arranged on two sides of the bottom of the sliding door.

Preferably, the retraction mechanism comprises a retraction turntable and a heavy hammer which are rotatably arranged in the installation cavity, the gas collection hose penetrates into the installation cavity and then winds around the retraction turntable, the heavy hammer is arranged on the pipe wall of the gas collection hose which winds around the retraction turntable, when the sliding door moves downwards, the heavy hammer ascends along with the gas collection hose, and the length of the gas collection hose in the cavity is prolonged.

Preferably, an absorption layer is detachably connected between inlets of adjacent connecting pipes in the first gas collecting cavity.

Preferably, two handles are symmetrically arranged on one side of the bottom of the sliding door, which is far away from the cavity.

Preferably, the bottom of the cabinet body is provided with a storage cavity, and the front side of the storage cavity is rotatably connected with a split cabinet door.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses simple structure, convenient to use, through the first gas collecting chamber, second gas collecting chamber and the third gas collecting chamber with negative pressure tube coupling, expand the influence scope that the air exhauster produced the negative pressure, make the gas of cavity bottom absorb away through first suction hood, the gas of cavity lateral wall absorbs away through the second suction hood, the gas of cavity top normally absorbs away through the suction hood, the gas of cavity front side absorbs away through the gas collection hole of push-and-pull door bottom, the loss of gaseous furthest reduces, the personal safety of fully protection user;

the third gas collecting cavity can be changed along with the height position of the sliding door through the gas collecting hose with the variable length, so that gas at the corresponding position and below can be sucked according to different opening degrees of the sliding door, the gas escape probability is further reduced, and users are fully protected;

can dismantle the absorbed layer of connection can adsorb inspiratory toxic gas, the follow-up unified processing of being convenient for, and the absorbed layer is detachable, conveniently replaces.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic front view of the present embodiment;

FIG. 2 is a schematic cross-sectional view of the present embodiment;

fig. 3 is an enlarged schematic view of a point a in fig. 2.

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

1. a cabinet body; 11. the cabinet doors are opened in half; 12. a receiving cavity; 13. a mounting cavity; 2. a chamber; 21. an operation table; 3. an air suction hood; 4. a sliding door; 41. a grip; 5. a negative pressure pipeline; 6. a first gas collection chamber; 61. a first draft hood; 62. a connecting pipe; 63. an absorbing layer; 7. a second draft hood; 71. a fixed part; 72. a convergence unit; 73. a second gas collection chamber; 74. an air collection port; 8. a third gas collecting cavity; 81. a gas collection hole; 82. a gas collection hose; 9. a retraction mechanism; 91. a retracting turntable; 92. and (4) a heavy hammer.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: the utility model provides a novel fume chamber in laboratory, includes the cabinet body 1, cavity 2, the cover 3 that induced drafts, push-and-pull door 4, air exhauster and negative pressure pipeline 5, negative pressure pipeline 5 installation is fixed at 1 upper end of the cabinet body and is connected outside air exhauster (not shown in the figure), induced drafts the installation of cover 3 and fixes the installation cavity 13 bottom at top in cavity 2 and communicate with negative pressure pipeline 5, push-and-pull door 4 slides along vertical direction and installs at 2 anterior openings in cavity and be used for the slip to seal cavity 2, cavity 2 bottom forms operation panel 21.

Specifically, a first gas collection cavity 6 is formed in the bottom of the operating platform 21, a first exhaust hood 61 communicated with the cavity 2 is installed at the top of the first gas collection cavity 6, a plurality of connecting pipes 62 are installed and connected on the side wall of the first gas collection cavity 6, the other ends of the connecting pipes 62 extend into the installation cavity 13 through the inner side of the inner wall of the cavity 2 and are communicated with the negative pressure pipeline 5, the cavity 2 is over against the bottom of the inner wall of the sliding door 4 to be provided with a second exhaust hood 7, the second exhaust hood 7 is communicated with the negative pressure pipeline 5 through a second gas collection cavity 73 formed in the inner wall of the cavity 2, a third gas collection cavity 8 is arranged at the bottom of the sliding door 4, a plurality of gas collection holes 81 are formed in the side wall and the bottom of the third gas collection cavity 8 facing the cavity 2, a gas collection hose 82 communicated with the negative pressure pipeline 5 is installed in the installation cavity 13, and a collection and discharge mechanism 9 used for collecting or vertically discharging the gas collection hose 82 is arranged in the installation cavity 13.

Preferably, the first draft hood 61 is long and is arranged at one side of the bottom of the cavity 2 close to the sliding door 4, and the first draft hood 61 is parallel to the bottom of the sliding door 4, so that the coverage of the first draft hood 61 can be enlarged, and the absorption effect on escaping gas can be enhanced.

Preferably, the second air collecting chamber 73 forms an air collecting opening 74 at the bottom of the inner wall of the chamber 2, the second air draft housing 7 includes a fixing portion 71 fixedly connected to the middle of the air collecting opening 74 and a converging portion 72 disposed at one end of the fixing portion 71 far away from the air collecting opening 74, the converging portion 72 is in a rectangular thin plate shape and has a gap with the inner wall of the chamber 2, and air enters the air collecting opening 74 and the second air collecting chamber 73 through the gap, so that a small passage can be formed through the gap, the suction force generated by the second air draft housing 7 is enhanced, and the air can be more easily absorbed through the second air draft housing 7.

Preferably, gas collection hose 82 is equipped with two altogether, and locates the both sides of push-and-pull door 4 bottom respectively, from this, can hide gas collection hose 82 in push-and-pull door 4 both sides, and push-and-pull door 4 middle part is the glass material generally, so can avoid influencing the observation effect of push-and-pull door 4, and guarantee the suction in the third gas collection chamber 8 simultaneously.

Preferably, the retraction mechanism 9 includes a retraction turntable 91 and a weight 92 rotatably disposed in the mounting cavity 13, the gas collection hose 82 penetrates into the mounting cavity 13 and then winds around the retraction turntable 91, the weight 92 is disposed on the wall of the gas collection hose 82 after winding around the retraction turntable 91, when the sliding door 4 moves down, the weight 92 ascends along with the gas collection hose 82, and the length of the gas collection hose 82 in the chamber 2 is extended; when the sliding door 4 moves upwards, the gas collection hose 82 at the corresponding position moves downwards under the action of the heavy hammer 92, the gas collection hose 82 in the cavity 2 is driven to retract into the mounting cavity 13, and the retraction turntable 91 provides guiding and limiting effects for the gas collection hose 82, so that the gas collection hose 82 can be retracted along with the action of the sliding door 4.

Preferably, can dismantle between the entry of adjacent connecting pipe 62 in first gas collecting chamber 6 and be connected with absorbed layer 63, in this embodiment, absorbed layer 63 is biological packing layer and activated carbon layer to can adsorb toxic gas, conveniently carry out centralized processing.

Preferably, two handles 41 are symmetrically arranged on one side of the bottom of the sliding door 4, which is far away from the chamber 2, so that the sliding door 4 can be conveniently operated.

Preferably, the bottom of the cabinet body 1 is provided with a storage cavity 12, and the front side of the storage cavity 12 is rotatably connected with the side-by-side cabinet door 11, so that the user can conveniently store medicines and the like in the storage cavity 12.

One specific application of this embodiment is:

firstly, in the use, the user upwards pulls the push-and-pull door 4, make cavity 2 open, inside gas may have the outside loss of toxic ingredients, first gas collecting cavity 6 this moment, second gas collecting cavity 73 and third gas collecting cavity 8, the influence scope that produces the air exhauster negative pressure enlarges, make the gas of cavity 2 bottom absorb away through first suction hood 61, the gas of cavity 2 lateral wall inhales away through second suction hood 7, the gas at cavity 2 top normally inhales away through suction hood 3, the gas of cavity 2 front side inhales away through the gas collection hole 81 of push-and-pull door 4 bottom, furthest reduces the loss of gas, fully protect user's personal safety.

In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a novel fume chamber in laboratory, includes the cabinet body (1), cavity (2), cover (3) that induced drafts, push-and-pull door (4), air exhauster and negative pressure pipeline (5), its characterized in that: negative pressure pipeline (5) are located cabinet body (1) upper end and are connected the air exhauster, the installation cavity bottom of cavity (2) interior top and communicate with negative pressure pipeline (5) are located in induced draft hood (3), cavity (2) front portion opening is located and is used for sliding and seal cavity (2) in push-and-pull door (4), cavity (2) bottom forms operation panel (21), operation panel (21) bottom is equipped with first gas collecting cavity (6), first gas collecting cavity (6) top is equipped with first suction hood (61) with cavity (2) intercommunication, first gas collecting cavity (6) lateral wall is equipped with a plurality of connecting pipes (62), the other end of connecting pipe (62) extends to in installation cavity (13) and communicates negative pressure pipeline (5), cavity (2) just are equipped with second suction hood (7) to the inner wall bottom of gas collecting cavity (4), second suction hood (7) communicate negative pressure pipeline (5) through second chamber (73) of locating cavity (2) inner wall ) The sliding door is characterized in that a third gas collection cavity (8) is arranged at the bottom of the sliding door (4), a plurality of gas collection holes (81) are formed in the third gas collection cavity (8) towards the side wall and the bottom of the cavity (2), a gas collection hose (82) communicated with the third gas collection cavity (8) and the negative pressure pipeline (5) is arranged in the installation cavity (13), and a retraction mechanism (9) used for retracting or vertically releasing the gas collection hose (82) is arranged in the installation cavity (13).

2. The novel laboratory fume hood according to claim 1, wherein: first draught hood (61) are rectangular form and locate one side that cavity (2) bottom is close push-and-pull door (4), first draught hood (61) are parallel with push-and-pull door (4) bottom.

3. The novel laboratory fume hood according to claim 1, wherein: the second gas collecting cavity (73) forms a gas collecting port (74) at the bottom of the inner wall of the cavity (2), the second air draft cover (7) comprises a fixing part (71) fixedly connected with the middle part of the gas collecting port (74) and a beam collecting part (72) arranged at one end, far away from the gas collecting port (74), of the fixing part (71), the beam collecting part (72) is in a thin plate shape and has a gap with the inner wall of the cavity (2), and gas enters the gas collecting port (74) and the second gas collecting cavity (73) through the gap.

4. The novel laboratory fume hood according to claim 1, wherein: the two gas collection hoses (82) are arranged on two sides of the bottom of the sliding door (4) respectively.

5. The novel laboratory fume hood according to claim 4, wherein: the retraction mechanism (9) comprises a retraction turntable (91) and a heavy hammer (92) which are rotatably arranged in a mounting cavity (13), the gas collection hose (82) penetrates through the mounting cavity (13) and then winds around the retraction turntable (91), the heavy hammer (92) is arranged on the wall of the gas collection hose (82) which winds around the retraction turntable (91), when the sliding door (4) moves downwards, the heavy hammer (92) ascends along with the gas collection hose (82), and the length of the gas collection hose (82) in the cavity (2) is prolonged.

6. The novel laboratory fume hood according to claim 1, wherein: an absorption layer (63) is detachably connected between the inlets of the adjacent connecting pipes (62) in the first gas collecting cavity (6).

7. The novel laboratory fume hood according to claim 1, wherein: two handles (41) are symmetrically arranged on one side of the bottom of the sliding door (4) far away from the chamber (2).

8. The novel laboratory fume hood according to claim 1, wherein: the cabinet body (1) bottom is equipped with accomodates chamber (12), accomodate chamber (12) front side rotation connection and run from opposite directions cabinet door (11).