CN220195882U - Totally-enclosed fume chamber structure - Google Patents

Abstract

A totally-enclosed fume hood structure comprises a rear assembly, a front end lower assembly, a front end middle assembly and a front end upper assembly. The rear assembly is used for ventilating and transferring articles. The front end lower part component is arranged on the front side surface of the rear part component and comprises a base. The front end middle part subassembly is located on the base, including a pair of first fly leaf that is parallel to each other and stagger to and a pair of second fly leaf that is parallel to each other and stagger is equipped with liftable ring portion between first fly leaf and the second fly leaf, is equipped with the third fly leaf about the ring portion periphery side respectively, and ring portion outer end is equipped with the outer loop, and outer loop inner circumference side is fixed with the gloves. The front end upper part component is arranged on the front end middle part component and comprises a top seat matched with the base. The fully-closed fume hood structure can be used for experiments in a fully-closed state, and hands of workers can be conveniently moved.

Description

Totally-enclosed fume chamber structure

Technical Field

The utility model relates to the technical field of laboratory fume hoods, in particular to a fully-closed fume hood structure.

Background

The fume hood is also called a cabinet type exhaust hood and is used for protecting staff when experiments with certain toxicity are carried out, and generally, the front end of the fume hood is provided with a transparent baffle, a small distance is reserved between the baffle and an experiment table in the fume hood, and hands of the staff extend into the fume hood from the lower part of the baffle to operate.

However, although the ventilation cabinet is internally provided with air flow blowing in a direction away from personnel, toxic gas leakage cannot be completely prevented below the baffle, and when the concentration of the toxic gas is high, part of the air still leaks to the personnel, so that the health is endangered.

Disclosure of Invention

Aiming at the defects, the utility model provides the totally-enclosed fume hood structure, which can be used for experiments in a totally-enclosed state, and the hands of workers can be conveniently moved.

In order to achieve the object of the present utility model, the following techniques are proposed:

a totally enclosed fume hood structure comprising:

a rear assembly for ventilating and transferring items;

the front end lower part component is arranged on the front side surface of the rear part component and comprises a base;

the front end middle part component is arranged on the base and comprises a pair of first movable plates which are parallel and staggered and a pair of second movable plates which are parallel and staggered, a liftable circular ring part is arranged between the first movable plates and the second movable plates, third movable plates are respectively arranged on the upper side and the lower side of the outer periphery of the circular ring part, an outer ring is arranged at the outer end of the circular ring part, and a glove is fixed on the inner periphery of the outer ring;

the front end upper assembly is arranged on the front end middle assembly and comprises a top seat matched with the base.

Further, the rear assembly comprises a rear frame, air pipes for air supply and air exhaust are arranged on the rear frame, and frame doors for placing and taking away objects are arranged on two sides of the rear frame.

Further, a pair of first board grooves parallel to each other and staggered are formed in the upper end face of the base, the lower end of the third movable plate below the base is in sliding fit with the first board grooves, a pair of second board grooves matched with the first board grooves are formed in the lower end face of the top base, and the upper end of the third movable plate above the base is in sliding fit with the second board grooves.

Further, be equipped with first fixed plate on the base up end, first fixed plate sliding fit is between two second fly boards, and first fixed plate both sides are equipped with the second fixed plate respectively, and each first fly board respectively with a second fixed plate sliding fit and laminating.

Further, one end of the first movable plate is provided with a T-shaped block which is vertically arranged, one end of the second movable plate is also provided with a T-shaped block, and two ends of the outer periphery of the circular ring part are respectively provided with a T-shaped groove which is in sliding fit with the T-shaped block.

Further, the upper end of the first movable plate is provided with a sliding rod, the sliding rod on the first movable plate extends out to the upper outside of the first movable plate, the upper end of the second movable plate is also provided with a sliding rod, two ends of the top seat are respectively provided with a convex part, and the inner end of the convex part is provided with a sliding groove matched with the sliding rod on the first movable plate.

Further, one side of the sliding rod on the first movable plate is provided with a C-shaped extension part, and one side surface of the top seat is provided with a pair of L-shaped extension parts respectively matched with the C-shaped extension parts.

The beneficial effects of this technical scheme lie in:

1. the full-closed ventilation cabinet is realized in the experiment, and the problem that part of gas still leaks to staff to harm health when the concentration of toxic gas is large can be solved.

2. The hand of staff can drive ring portion and remove, further drives first fly leaf and second fly leaf and removes, and at the removal in-process, first fixed plate, second fixed plate, first fly leaf, second fly leaf, third fly leaf can seal the fume chamber front end jointly.

3. The outer ring with gloves of different specifications can be assembled, so that the glove is convenient for workers with different hand sizes to use.

Drawings

Fig. 1 shows an overall perspective view of an embodiment of the present application.

Fig. 2 illustrates a perspective view of a front end lower assembly according to an embodiment of the present application.

Fig. 3 illustrates a perspective view of a front end mid-section assembly according to an embodiment of the present application.

Fig. 4 illustrates a perspective view of a front end upper assembly according to an embodiment of the present application.

Fig. 5 shows an exploded view of a front end midsection assembly according to an embodiment of the application.

Fig. 6 shows a partial exploded view of the front end midsection assembly from below in accordance with an embodiment of the present application.

Fig. 7 shows an enlarged view of portion a of fig. 1 in an embodiment of the present application.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the present application more apparent, the embodiments of the present application will be described in detail below with reference to the accompanying drawings, but the examples described in the present application are some, but not all, examples of the present application.

The fully-enclosed fume hood structure shown in fig. 1-7 comprises a rear assembly 1, a front lower assembly 2, a front middle assembly 3 and a front upper assembly 4.

The rear assembly 1 is used for ventilating and transferring articles, the rear assembly 1 comprises a rear frame 11, an air pipe 12 used for supplying air and exhausting air is arranged on the rear frame 11, sealing is still easy to ensure after the rear assembly is connected with an external pipeline, frame doors 13 used for placing and taking away articles are respectively arranged on two sides of the rear frame 11, and an operation table is arranged in the rear assembly 1.

The front end lower part subassembly 2 is located rear part subassembly 1 leading flank, front end lower part subassembly 2 includes base 21, base 21 up end and operation panel up end are located same horizontal plane, a pair of first board groove 22 that are parallel to each other and stagger has been seted up to base 21 up end, be equipped with first fixed plate 23 on the base 21 up end, first fixed plate 23 locates between two first board grooves 22, first fixed plate 23 both sides are equipped with second fixed plate 24 respectively, the tip of two second fixed plates 24 is fixed connection in a rear frame 11 medial surface respectively.

The front end middle component 3 is arranged on the base 21, the front end middle component 3 comprises a pair of first movable plates 31 which are parallel and staggered with each other, and a pair of second movable plates 35 which are parallel and staggered with each other, one end of each first movable plate 31 is provided with a T-shaped block 32 which is vertically arranged, the upper end of each first movable plate 31 is provided with a sliding rod 33, the sliding rods 33 on the first movable plates 31 extend to the upper part outside the first movable plates 31, one side of each sliding rod 33 on each first movable plate 31 is provided with a C-shaped extension part 34, each first movable plate 31 is respectively in sliding fit and fit with one second fixed plate 24, one end of each second movable plate 35 is also provided with a T-shaped block 32, the upper end of each second movable plate 35 is also provided with a sliding rod 33, the first fixed plate 23 is in sliding fit between the two second movable plates 35, circular ring parts 36 are respectively assembled between each group of first movable plates 31 and second movable plates 35, specifically, two ends of the outer circumference side of the circular ring parts 36 are respectively provided with T-shaped grooves 37 which are in sliding fit with a T-shaped block 32, the upper and lower sides of the outer circumference side of the circular ring parts 36 are respectively provided with third movable plates 38, the lower ends of the lower third movable plates 38 are in sliding fit with the first plate grooves 22, the length of the lower third movable plates 38 in the vertical direction is smaller than the depth of the first plate grooves 22, a plurality of through holes are further penetrated through two ends of the circular ring parts 36, the outer ends of the circular ring parts 36 are in threaded connection with outer rings 39 through the through holes, the inner circumference side of the outer rings 39 is fixedly provided with gloves 5, specifically, the fixed positions are arm parts of the gloves, and the gloves 5 can be turned inside and outside the ventilation cabinet by an operator at will.

The front end upper assembly 4 is arranged on the front end middle assembly 3, the front end upper assembly 4 comprises a top seat 41 matched with the base 21, a pair of second plate grooves 42 matched with the first plate grooves 22 are arranged on the lower end face of the top seat 41, the upper ends of the upper third movable plates 38 are in sliding fit with the second plate grooves 42, the vertical length of the upper third movable plates 38 is smaller than the depth of the second plate grooves 42, in particular, no matter how the circular ring parts 36 are lifted or lowered, the third movable plates 38 can not separate from the corresponding first plate grooves 22 or the second plate grooves 42, a pair of L-shaped extending parts 43 respectively matched with the C-shaped extending parts 34 are arranged on the lower part of one side face of the top seat 41, in particular, the upper transverse edges of the C-shaped extending parts 34 are hung on the transverse edges of the L-shaped extending parts 43, the sliding stability of the first movable plates 31 can be further improved, protruding parts 44 are respectively arranged on the lower ends of the two ends of the top seat 41, and sliding grooves 45 matched with sliding rods 33 on the first movable plates 31 are arranged on the inner ends of the protruding parts 44.

Specifically, the first fixed plate 23, the second fixed plate 24, the first movable plate 31, the second movable plate 35 and the third movable plate 38 are transparent plates, and can be made of glass or transparent plastic, and if glass is adopted, a special film for glass can be attached to the contact surface, so that abrasion is prevented.

The working mode is as follows:

according to the hand size of the staff, the matched outer ring 39 is assembled, namely the glove 5 matched with the hand and the arm is assembled;

opening the frame door 13, placing experimental articles such as test tubes, reagent bottles and the like, closing the frame door 13, and then starting ventilation;

the worker turns the glove 5 into the fume chamber and wears the glove to perform experimental operation, during the operation, when the hand moves up and down, the circular ring part 36 drives the third movable plate 38 to move up and down in the first plate groove 22 or the second plate groove 42, and when the hand moves left and right, the circular ring part 36 drives the first movable plate 31 and the second movable plate 35 to move, so that the hand can move freely;

after the experiment is completed, ventilation is continued until the concentration of toxic gas is lower than a preset value, and then the frame door 13 is opened to take out the article.

Specifically, after outer ring 39 with glove 5 is used several times, outer ring 39 is discarded, specifically times depending on laboratory regulations.

The above are only some of the examples listed in this application and are not intended to limit this application.

Claims (7)

1. A totally enclosed fume hood structure, comprising:

a rear assembly (1) for ventilating and transferring articles;

the front end lower part component (2) is arranged on the front side surface of the rear part component (1) and comprises a base (21);

the front end middle part component (3) is arranged on the base (21) and comprises a pair of first movable plates (31) which are parallel and staggered and a pair of second movable plates (35) which are parallel and staggered, a liftable ring part (36) is arranged between the first movable plates (31) and the second movable plates (35), third movable plates (38) are respectively arranged on the upper side and the lower side of the outer periphery of the ring part (36), an outer ring (39) is arranged at the outer end of the ring part (36), and a glove (5) is fixed on the inner periphery of the outer ring (39);

the front end upper component (4) is arranged on the front end middle component (3) and comprises a top seat (41) matched with the base (21).

2. The totally-enclosed fume hood structure according to claim 1, characterized in that the rear assembly (1) comprises a rear frame (11), the rear frame (11) is provided with air pipes (12) for supplying air and exhausting air respectively, and two sides of the rear frame (11) are provided with frame doors (13) for placing and taking away articles respectively.

3. The structure of a fully-enclosed fume hood according to claim 1, wherein the upper end surface of the base (21) is provided with a pair of first plate grooves (22) which are parallel and staggered, the lower end of the lower third movable plate (38) is slidably matched with the first plate grooves (22), the lower end surface of the top seat (41) is provided with a pair of second plate grooves (42) matched with the first plate grooves (22), and the upper end of the upper third movable plate (38) is slidably matched with the second plate grooves (42).

4. The totally-enclosed fume chamber structure according to claim 1, wherein a first fixing plate (23) is arranged on the upper end surface of the base (21), the first fixing plate (23) is slidably fitted between two second movable plates (35), two sides of the first fixing plate (23) are respectively provided with a second fixing plate (24), and each first movable plate (31) is slidably fitted and attached to one second fixing plate (24).

5. The structure of a fully-enclosed fume hood according to claim 1, wherein one end of the first movable plate (31) is provided with a vertically arranged T-shaped block (32), one end of the second movable plate (35) is also provided with a T-shaped block (32), and both ends of the outer periphery of the circular ring portion (36) are respectively provided with a T-shaped groove (37) which is in sliding fit with the T-shaped block (32).

6. The totally-enclosed fume chamber structure according to claim 1, wherein the upper end of the first movable plate (31) is provided with a sliding rod (33), the sliding rod (33) on the first movable plate (31) extends to the upper outside of the first movable plate (31), the upper end of the second movable plate (35) is also provided with a sliding rod (33), two ends of the top seat (41) are respectively provided with a convex part (44), and the inner end of the convex part (44) is provided with a sliding groove (45) matched with the sliding rod (33) on the first movable plate (31).

7. The structure of a fully enclosed fume hood according to claim 1, wherein a C-shaped extension (34) is provided on one side of a slide bar (33) on the first movable plate (31), and a pair of L-shaped extensions (43) respectively matching with the C-shaped extension (34) are provided on one side of the top base (41).