CN211011779U

CN211011779U - Laboratory air pumping and exhausting device

Info

Publication number: CN211011779U
Application number: CN201922043821.4U
Authority: CN
Inventors: 黄廷宝; 许秀玲
Original assignee: Fujian Mince Testing Technology Service Co ltd
Current assignee: Fujian Mince Testing Technology Service Co ltd
Priority date: 2019-11-23
Filing date: 2019-11-23
Publication date: 2020-07-14
Anticipated expiration: 2029-11-23

Abstract

The utility model discloses a laboratory suction exhauster relates to experiment auxiliary assembly's technical field, has solved the problem that present updraft ventilator can't adjust suction, and its technical scheme main points are: the air suction cover comprises a ventilation pipe and an air suction cover arranged on the ventilation pipe, wherein a cover opening of the air suction cover is provided with a flanging which is turned outwards, a blocking disc with the shape matched with that of the cover opening is arranged outside the air suction cover, and the blocking disc is hinged to the flanging through a hinge shaft and rotates along the plane of the cover opening by taking the hinge shaft as the center. The utility model discloses can adjust the suction size to the convulsions that adapt to different experiments are used.

Description

Laboratory air pumping and exhausting device

Technical Field

The utility model relates to a technical field of experiment auxiliary assembly, in particular to laboratory pump drainage device.

Background

The laboratory is the place that student or scientific research personnel carried out various physics or chemical experiments, can produce waste gas at the in-process of various experiments, and waste gas dispersion can cause the influence to experimenter's health in the laboratory.

For this reason, the chinese utility model patent that current grant bulletin number is CN209379620U provides an updraft ventilator, and it includes the mounting panel, the surperficial integral type of mounting panel is connected with the ventilation pipe with external blast pipe intercommunication, and the bottom integral type of ventilation pipe is connected with the intake pipe, the inside bottom movable mounting of intake pipe has first connecting pipe, and the bottom of first connecting pipe articulates through connecting device has the second connecting pipe, the tip of second connecting pipe articulates through connecting device has the third connecting pipe, and the tip of third connecting pipe articulates through connecting device has the cover that induced drafts.

The exhaust device of this type establishes the produced waste gas of clearance experiment in the laboratory glassware top through the cover that will induced draft when using, but the produced waste gas volume of different experiments is different, and the big or small specification of present cover that induced drafts is fixed, and exhaust power is the constant value, can't adjust suction according to the difference of experiment, has improved space.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a laboratory suction ventilator can adjust the suction size to the convulsions that adapt to different experiments are used.

The above technical purpose of the present invention can be achieved by the following technical solutions:

the utility model provides a laboratory suction and exhaust device, includes the ventilation pipe and sets up the cover that induced drafts on the ventilation pipe, the cover mouth department of the cover that induced drafts has the turn-ups that turns over to the outside, the cover that induced drafts is provided with shape and cover mouth shape matched with outward and keeps off the dish, keep off the dish and articulate in turn-ups department through a articulated shaft to use the articulated shaft as the center, rotate along cover mouth place plane.

Through adopting above-mentioned technical scheme, through being provided with the fender dish, the fender dish rotates along the articulated shaft to the control cover's that induced drafts opening size, because the convulsions power is unchangeable, when the cover opening that induced drafts diminishes, suction will increase, when the cover opening grow that induced drafts, suction will diminish, but the coverage can be bigger, therefore technical staff in the field can adjust the opening size of inhaling the fan housing according to the difference of experiment, thereby the convulsions that adapt to different experiments are used.

The utility model discloses further set up to: the articulated shaft includes the body of rod and sets up the cone at the outside constriction in body of rod both ends, the maximum diameter of cone is greater than the diameter of the body of rod, the turn-ups with all set up the perforation that supplies the body of rod to pass on the fender dish, the body of rod is worn to two downthehole backs of wearing, and two cones offset with the turn-ups respectively and the terminal surface that keeps off the dish.

Through adopting above-mentioned technical scheme, through setting up the articulated shaft into the body of rod and cone, the body of rod is worn in the perforation, and cone and turn-ups and fender dish offset can avoid keeping off the dish at the in-process that uses and turn-ups's articulated relation phase separation, improve the stability that keeps off the dish and use.

The utility model discloses further set up to: the articulated shaft is made of flexible rubber, and the conical head is provided with a cross-shaped deformation groove.

Through adopting above-mentioned technical scheme, penetrate fenestrate in-process at the conical head, can deform along cross deformation groove to the installation of conical head has been made things convenient for.

The utility model discloses further set up to: and a rubber pad for abutting the baffle disc is arranged on one side surface of the flanging facing the baffle disc.

Through adopting above-mentioned technical scheme, through being provided with the rubber pad, keep off the dish and offset with the rubber pad, the rubber pad has deformability, has increased the frictional force when keeping off the dish and rotate the fender dish but can not influence the staff to avoid keeping off the emergence of the rotation phenomenon under the effect of gravity or suction after the dish has adjusted the position.

The utility model discloses further set up to: the central point of fender dish puts and has seted up the through-hole to it is provided with the sliding plate of control through-hole switching size to slide in the through-hole, the fender dish is seted up the groove that slides that supplies the sliding plate to slide in the roll-off in the pore wall of opening.

Through adopting above-mentioned technical scheme, set up the through-hole through keeping off on the dish to sliding in the through-hole and being provided with the slide plate, the size of slide plate control opening can be adjusted suction, thereby has given the big or small mode of regulation of another kind of suction, and induced draft the position and be through-hole department, can conveniently will induced draft the position alignment and treat the suction position.

The utility model discloses further set up to: the through-hole is the rectangular hole, and the through-hole is the T type along its width direction's cross section, and it contracts the section including footpath expansion section and footpath, and wherein footpath expansion section is located the cover one side that induced drafts towards the reducing mask, and the footpath contracts the section and is located the one side that the cover that induced drafts was kept away from to the reducing mask, the width of slide plate is greater than the width that the footpath contracted the section, and is less than the width that the footpath expanded the section, and the thickness of slide plate is less than footpath expansion section thickness, the reducing mask is close to the blend stop that the inside lateral wall of cover that induced drafts offsets in order.

Through adopting above-mentioned technical scheme, the width of slide plate is greater than the width of the section that contracts of footpath, and is less than the width that the section expanded of footpath to realize that the slide plate can not deviate from the through-hole to the section direction that contracts of footpath, the slide plate passes through the blend stop simultaneously and realizes spacingly, thereby realizes that the slide plate can not deviate from the through-hole to the section direction that expands of footpath, has promoted the stability that the slide plate slided.

The utility model discloses further set up to: and a handle groove for a hand to insert is formed in the narrow plate part.

Through adopting above-mentioned technical scheme, through the setting in handle groove, can make things convenient for the staff to drive the slide plate and remove.

To sum up, the utility model discloses following beneficial effect has:

1. the baffle disc rotates along the hinged shaft, so that the size of the opening of the air suction cover is controlled, the suction force is increased when the opening of the air suction cover is reduced due to unchanged air suction power, and the suction force is reduced when the opening of the air suction cover is increased but the coverage surface is larger, so that a person skilled in the art can adjust the size of the opening of the air suction cover according to different experiments, and the air suction cover is suitable for air suction of different experiments;

2. through setting up the through-hole on keeping off the dish to it is provided with the slide plate to slide in the through-hole, the size of slide plate control opening can be adjusted suction, thereby has given the big or small mode of regulation of another kind of suction, and induced draft the position and be through-hole department, can conveniently will induced draft the position alignment and wait to inhale the position.

Drawings

FIG. 1 is a schematic structural view of the embodiment of the present invention when the baffle plate is closed;

FIG. 2 is a schematic structural view of the present embodiment when the catch tray is opened;

fig. 3 is a schematic structural view of a hinge shaft in the present embodiment;

fig. 4 is an exploded view of the shutter disk in the present embodiment.

In the figure, 1, vent pipe; 2. an air suction hood; 21. flanging; 22. a rubber pad; 3. a catch tray; 31. a through hole; 311. a reducing section; 312. expanding the diameter; 313. a sliding groove; 32. a slide plate; 321. a handle slot; 33. blocking strips; 4. hinging a shaft; 41. a rod body; 42. a conical head; 421. a cross-shaped deformation groove.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, the utility model provides a laboratory suction and exhaust device, including ventilation pipe 1 and the cover 2 that induced drafts of setting on ventilation pipe 1.

Thereby ventilation pipe 1 comprises a plurality of pipelines of articulated in proper order and realizes the regulation of ventilation pipe 1 induced draft position, and this is prior art, and is not the innovative point place of this application, and the event is not repeated the expansion here.

The cover opening of the air suction cover 2 is provided with a flanging 21 which is turned outwards, the air suction cover 2 is also provided with a baffle disc 3 the shape of which is matched with the shape of the cover opening, and the diameter of the baffle disc 3 is consistent with the maximum diameter of the flanging 21.

Referring to fig. 2 and 3, the baffle disc 3 is hinged on the flange 21 through a hinge shaft 4, the hinge shaft 4 is made of flexible rubber, and includes a rod body 41 and a conical head 42 disposed at both ends of the rod body 41 and outwardly narrowed, a cross-shaped deformation groove 421 facilitating deformation of the conical head 42 is further disposed on the conical head 42, wherein the maximum diameter of the conical head 42 is larger than the diameter of the rod body 41, a step surface abutting against the flange 21 or the baffle disc 3 is formed between the conical head 42 and the rod body 41, through holes for the rod body 41 to pass through are disposed on the flange 21 and the baffle disc 3, and the diameter of the through holes is smaller than the maximum diameter of the conical head 42. During installation, the conical head 42 on one side sequentially penetrates through the hinge shaft 4 and the through hole on the flanging 21 to realize the positioning of the hinge shaft 4, and the hinge shaft 4 is taken as the center of the hinge shaft 3 to rotate along the plane of the cover opening.

One side of turn-ups 21 towards keeping off dish 3 still is provided with rubber pad 22, and the thickness sum of rubber pad 22, turn-ups 21 and keeping off dish 3 is slightly more than the length of body of rod 41, and rubber pad 22 can be compressed and make keeping off dish 3 support on rubber pad 22 all the time after the installation to frictional force when having increased keeping off dish 3 and rotating under the dead weight influence is avoided keeping off dish 3.

Referring to fig. 4, the blocking plate 3 is provided with a through hole 31, a sliding plate 32 for controlling the opening and closing of the through hole 31 is slidably disposed in the through hole 31, the blocking plate 3 is provided with a sliding groove 313 for the sliding plate 32 to slide into and out of the through hole, and a handle groove 321 for facilitating the manual control of the sliding plate to slide is further disposed on a side wall of the sliding plate 32 away from the air suction hood 2.

Through-hole 31 is the rectangular hole, and through-hole 31 is the T type along its width direction's cross section, it expands section 312 and the section 311 of reducing including footpath, wherein footpath expands section 312 and is located keeping off dish 3 and towards the cover 2 one side that induced drafts, the section 311 of reducing is located keeping off dish 3 and keeps away from the one side of the cover 2 that induced drafts, the width of slide plate 32 is greater than the width that reduces section 311, and be less than the width that the footpath expanded section 312, the thickness of slide plate 32 is less than the section 312 thickness that expands footpath, the both sides setting that the section 312 was expanded in footpath of baffle dish 3 and slide plate 32 are close to the blend stop 33 that the inside lateral wall of cover 2 was supported in order.

The using method comprises the following steps:

when different experimental instruments are replaced to carry out experimental operation, the opening size of the cover opening of the air suction cover 2 can be controlled by rotating the baffle disc 3, so that the air suction wind power is adjusted;

meanwhile, the sliding plate 32 can be controlled to slide, so that the opening size of the through hole 31 is controlled, and the air suction wind power can be adjusted.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims

1. The utility model provides a laboratory suction and exhaust device, includes ventilation pipe (1) and the cover (2) that induced drafts of setting on ventilation pipe (1), its characterized in that, the cover mouth department of the cover (2) that induced drafts has outside turn-ups (21) of rolling over, it is provided with shape and cover mouth shape matched with fender dish (3) to induced draft cover (2) outward, keep off dish (3) and articulate in turn-ups (21) department through a articulated shaft (4) to use articulated shaft (4) as the center, rotate along cover mouth place plane.

2. The laboratory ventilation device according to claim 1, wherein the hinge shaft (4) comprises a rod body (41) and tapered heads (42) disposed at two ends of the rod body (41) and outwardly narrowed, a maximum diameter of the tapered heads (42) is larger than a diameter of the rod body (41), the flanges (21) and the baffle disc (3) are both provided with through holes for the rod body (41) to pass through, and after the rod body (41) passes through the through holes, the two tapered heads (42) respectively abut against end faces of the flanges (21) and the baffle disc (3).

3. A laboratory ventilation device according to claim 2, characterized in that said articulated shaft (4) is made of flexible rubber, said conical head (42) being provided with a cross-shaped groove (421).

4. A laboratory ventilation device according to claim 3, characterized in that a rubber pad (22) against which the baffle disc (3) abuts is arranged on a side of the flange (21) facing the baffle disc (3).

5. The laboratory ventilation device according to claim 4, wherein a through hole (31) is formed in a center position of the baffle plate (3), a sliding plate (32) for controlling the opening and closing of the through hole (31) is slidably disposed in the through hole (31), and a sliding groove (313) for the sliding plate (32) to slide in and out is formed in a hole wall of the through hole of the baffle plate (3).

6. The laboratory ventilation device according to claim 5, wherein the through hole (31) is a rectangular groove, and the cross section of the through hole (31) along the width direction thereof is T-shaped, and the through hole comprises a diameter expansion section (312) and a diameter reduction section (311), wherein the diameter expansion section (312) is located on one side of the reducing cover facing the air suction cover (2), the diameter reduction section (311) is located on one side of the reducing cover away from the air suction cover (2), the width of the sliding plate (32) is greater than that of the diameter reduction section (311) and less than that of the diameter expansion section (312), the thickness of the sliding plate (32) is less than that of the diameter expansion section (312), and the blocking plate (3) is provided with blocking strips (33) which abut against one side wall of the sliding plate (32) close to the inside of the air suction cover (2) to prevent the sliding plate (32) from coming off at both sides of the diameter expansion section (312).

7. The laboratory ventilation device according to claim 6, wherein the sliding plate (32) is provided with a handle slot (321) for a human hand to insert.