CN117619850A - Ventilation cabinet for biological medicine - Google Patents

Abstract

The invention discloses a biomedical fume hood, which comprises: the cabinet body is provided with a top plate, and the top plate is provided with an air port; the bottom of roof fixedly connected with montant, the bottom of roof still is equipped with the rotatory screw rod of motor drive, a sliding connection of trompil of seting up on montant and the cover piece. In the invention, objects such as plastic bags in a cabinet body float under the action of air flow, the plastic bags can be directly sucked at the sleeve blocks under the action of the air port, the motor drives the screw rod to rotate, so that the sleeve blocks move downwards, the eccentric wheel at the end part of the screw rod also rotates along with the screw rod until the sleeve blocks are completely separated from the air port, the eccentric wheel pushes the sliding plate to move until the clamping blocks are separated from the clamping grooves, and under the action of the elasticity of the first spring and the second spring, the push plate pushes the clamping plate to move upwards together until the clamping plate clamps the plastic bags at the bottom of the sleeve blocks, and at the moment, the air port can normally play a role, and the plastic bags can not shade the air port.

Description

Ventilation cabinet for biological medicine

Technical Field

The invention relates to the technical field of fume hoods, in particular to a fume hood for biological medicine.

Background

When the biological medicine fume hood operates, the fan at the top of the biological medicine fume hood enables the air flow in the hood to be upward, and the upper exhaust effect is achieved. Therefore, in the experiment using the biomedical fume hood, additional care was required that the disposable glove or the lighter plastic bag could not be left in the fume hood. Once the disposable gloves or the lighter plastic bags are left in the fume hood, under the action of the fan of the fume hood, the disposable gloves or the lighter plastic bags can float upwards under the action of air flow until the air pipe opening of the fan is blocked. Thereby causing the fume hood to fail to operate properly.

Therefore, the traditional fume hood needs to be improved, so that the protection of the air port of the fume hood is increased, and the air port is prevented from being blocked by disposable gloves or lighter plastic bags accidentally left in the fume hood.

Disclosure of Invention

The invention aims at: in order to solve the problems, a biomedical ventilation cabinet is provided.

In order to achieve the above purpose, the present invention adopts the following technical scheme:

a biomedical fume hood, comprising:

the cabinet body is provided with a top plate, and the top plate is provided with an air port;

the bottom of the top plate is fixedly connected with a vertical rod, the bottom of the top plate is also provided with a screw rod driven by a motor to rotate, the vertical rod is in sliding connection with a first opening formed in the sleeve block, the screw rod is in threaded connection with a first screw hole formed in the sleeve block, a sleeve groove is formed in the sleeve block, the sleeve groove is sleeved at the air port, and an air hole I penetrating through the sleeve block is formed in the inner wall of the sleeve groove;

the clamping plate is provided with a first round hole and a second round hole, the first round hole is in sliding connection with the vertical rod, the second round hole is in sliding connection with the screw rod, the bottom of the clamping plate is abutted to a push plate, the push plate is provided with a first vertical hole and a second vertical hole, and the first vertical hole and the second vertical hole are respectively in sliding connection with the vertical rod and the screw rod;

the connecting plate is fixedly connected with the end part of the vertical rod, the connecting plate is rotationally connected with the screw rod, the first spring and the second spring are respectively sleeved on the vertical rod and the screw rod, and a limiting part for limiting the position of the push plate is arranged on the connecting plate.

Preferably, the locating part includes fixed connection's curb plate on the connecting plate, sliding connection has the slide bar on the curb plate, the one end fixedly connected with handle of slide bar, the other end fixedly connected with slide, the mesopore has been seted up on the connecting plate, fixedly connected with fixture block on the slide, the cover is equipped with the spring III on the slide bar, the bottom fixedly connected with and the mesopore sliding connection's of push pedal bottom block, the draw-in groove has been seted up on the bottom block, the tip fixedly connected with eccentric wheel of screw rod, the outer wall of eccentric wheel and the lateral wall contact of slide, still be equipped with the regulating part to slide and splint position limitation on the connecting plate.

Preferably, the two ends of the sliding plate are bent, the bending part is in sliding connection with the outer wall of the connecting plate, one end of the third spring is fixedly connected with the side plate, the other end of the third spring is fixedly connected with the side wall of the sliding plate, and the third spring pushes the clamping block to extend into the clamping groove.

Preferably, one ends of the first spring and the second spring are fixedly connected with the upper surface of the connecting plate, the other ends of the first spring and the second spring are fixedly connected with the lower surface of the push plate, and the elastic force of the first spring and the second spring pushes the push plate to move upwards until the push plate pushes the clamping plate to move upwards to be abutted with the sleeve block.

Preferably, the regulating part comprises a fixed block fixedly connected with the clamping plate, a square groove is formed in the end part of the sliding plate, a connecting hole matched with the square groove is formed in the connecting plate, a round rod is connected to the connecting plate in a sliding mode, a square block is connected to the end part of the round rod in a rotating mode, a cylindrical block is fixedly connected to the round rod, a spring IV is sleeved on the round rod, a moving block is connected to the round rod in a through threaded mode, a transverse block is fixedly connected to the bottom of the moving block, a sliding groove connected with the transverse block in a sliding mode is formed in the connecting plate, a bent block is fixedly connected to the moving block, a stop block is connected to the bent block in a rotating mode, and a torsion spring is arranged between the stop block and the bent block.

Preferably, one end of the spring IV is fixedly connected with the bending part of the connecting plate, the other end of the spring IV is fixedly connected with the cylindrical block, and the elasticity of the spring IV pushes the square block to move to extend into the square groove and the connecting hole.

Preferably, the elastic force of the torsion spring pushes the stop block to rotate upwards until the stop block is perpendicular to the side wall of the moving block, and the stop block cannot continue to rotate upwards at the moment.

In summary, due to the adoption of the technical scheme, the beneficial effects of the invention are as follows:

1. this application is through the internal objects such as plastic bag of cabinet waft under the effect of air current, and the plastic bag can directly inhale in cover piece department under the effect of wind gap, and motor drive screw rod is rotatory for cover piece downstream, and the eccentric wheel of screw rod tip also rotates thereupon, until the cover piece breaks away from the wind gap completely, and the eccentric wheel promotes the slide and removes, until the fixture block breaks away from the draw-in groove, under the elasticity effect of spring one and spring two, the push pedal promotes splint and upwards moves together, until the plastic bag of splint with cover piece bottom is cliied, and the wind gap can normally exert effect this moment, and the plastic bag can not play the influence of sheltering from to the wind gap.

2. This application is through the direct downward pressing splint of operating personnel for when the fixed block on the splint is direct when contacting with the dog, also can not cause the damage of dog, and when the splint lasts down to remove, can lead to dog and movable block coincidence, until the splint contacts with the dog, under the spring action of torsional spring, the dog is rotatory, and is in the splint top, and then leads to the unable upward movement of splint, consequently can effectually avoid the dog damage that the non-professional operating procedure makeed mistakes and lead to.

Drawings

Fig. 1 shows a schematic diagram of the overall structure of a biomedical ventilation cabinet provided according to an embodiment of the invention;

fig. 2 shows a schematic top plate part structure of a biomedical ventilation cabinet according to an embodiment of the present invention;

FIG. 3 shows a schematic view of a round rod and screw section provided in accordance with an embodiment of the present invention;

FIG. 4 shows a schematic view of a portion of a structure of a connection board according to an embodiment of the present invention;

FIG. 5 shows a schematic view of the structure of a sleeve block, a clamping plate and a push plate part provided according to an embodiment of the invention;

FIG. 6 shows a schematic view of a block portion provided in accordance with an embodiment of the present invention;

legend description:

1. a cabinet body; 2. a top plate; 3. an air port; 4. a vertical rod; 5. a screw; 6. sleeving blocks; 7. a sleeve groove; 8. an air hole I; 9. opening a first hole; 10. a screw hole I; 11. a clamping plate; 12. a round hole I; 13. a round hole II; 14. a second air hole; 15. a fixed block; 16. a push plate; 17. a vertical hole I; 18. a vertical hole II; 19. a bottom block; 20. a clamping groove; 21. a connecting plate; 22. a middle hole; 23. a first spring; 24. a second spring; 25. an eccentric wheel; 26. a slide bar; 27. a handle; 28. a third spring; 29. a slide plate; 30. a clamping block; 31. a square groove; 32. a side plate; 33. a chute; 34. a round bar; 35. a square block; 36. a cylindrical block; 37. a spring IV; 38. a moving block; 39. a transverse block; 40. bending blocks; 41. a stop block; 42. a torsion spring; 43. and a connection hole.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Referring to fig. 1-6, the present invention provides a technical solution:

a biomedical fume hood, comprising:

the cabinet body 1, the top plate 2 is installed on the cabinet body 1, the air port 3 is installed on the top plate 2, and the direct reference of the prior art is omitted herein;

the bottom of the top plate 2 is fixedly connected with a vertical rod 4, the bottom of the top plate 2 is also provided with a screw 5 driven by a motor to rotate, the vertical rod 4 is in sliding connection with a first opening 9 formed in the sleeve block 6, the screw 5 is in threaded connection with a first screw hole 10 formed in the sleeve block 6, the sleeve block 6 is provided with a sleeve groove 7, the sleeve groove 7 is sleeved at the air port 3, and an air hole 8 penetrating through the sleeve block 6 is formed in the inner wall of the sleeve groove 7;

when the sleeve groove 7 of the sleeve block 6 is sleeved at the air port 3, the air port 3 can normally play a role under the action of the first air hole 8, and the air port is not blocked. Therefore, when objects such as plastic bags in the cabinet body 1 float under the action of air flow, the plastic bags can be directly sucked at the sleeve block 6 under the action of the air port 3, and the motor drives the screw 5 to rotate at the moment;

the clamping plate 11 is provided with a vent hole II 14, the clamping plate 11 is provided with a round hole I12 and a round hole II 13, the round hole I12 is in sliding connection with the vertical rod 4, the round hole II 13 is in sliding connection with the screw rod 5, the bottom of the clamping plate 11 is abutted to a push plate 16, the push plate 16 is provided with a vertical hole I17 and a vertical hole II 18, and the vertical hole I17 and the vertical hole II 18 are respectively in sliding connection with the vertical rod 4 and the screw rod 5;

the connecting plate 21 is fixedly connected with the end part of the vertical rod 4, the connecting plate 21 is rotationally connected with the screw 5, the first spring 23 and the second spring 24 are respectively sleeved on the vertical rod 4 and the screw 5, and a limiting part for limiting the position of the push plate 16 is arranged on the connecting plate 21.

The locating part includes fixed connection's curb plate 32 on the connecting plate 21, sliding connection has slide bar 26 on the curb plate 32, the one end fixedly connected with handle 27 of slide bar 26, the other end fixedly connected with slide 29, the intermediate hole 22 has been seted up on the connecting plate 21, fixedly connected with fixture block 30 on the slide 29, the cover is equipped with the spring III 28 on the slide bar 26, the bottom fixedly connected with of push pedal 16 and intermediate hole 22 sliding connection's bottom block 19, the draw-in groove 20 has been seted up on the bottom block 19, the tip fixedly connected with eccentric wheel 25 of screw rod 5, the outer wall of eccentric wheel 25 and the lateral wall contact of slide 29 still be equipped with the regulating part to slide 29 and splint 11 position restriction on the connecting plate 21.

The two ends of the sliding plate 29 are bent, the bending part is in sliding connection with the outer wall of the connecting plate 21, one end of the third spring 28 is fixedly connected with the side plate 32, the other end of the third spring is fixedly connected with the side wall of the sliding plate 29, and the third spring 28 pushes the clamping block 30 to extend into the clamping groove 20.

One end of the first spring 23 and one end of the second spring 24 are fixedly connected with the upper surface of the connecting plate 21, the other end of the first spring 23 and the other end of the second spring 24 are fixedly connected with the lower surface of the push plate 16, and the elastic force of the first spring 23 and the elastic force of the second spring 24 push the push plate 16 to move upwards until the push plate 16 pushes the clamping plate 11 to move upwards to be abutted with the sleeve block 6.

The regulating part comprises a fixed block 15 fixedly connected with the clamping plate 11, a square groove 31 is formed in the end part of the sliding plate 29, a connecting hole 43 matched with the square groove 31 is formed in the connecting plate 21, a round rod 34 is connected to the connecting plate 21 in a sliding mode, a square block 35 is connected to the end part of the round rod 34 in a rotating mode, a cylindrical block 36 is fixedly connected to the round rod 34, a spring four 37 is sleeved on the round rod 34, a movable block 38 is connected to the round rod 34 in a through threaded mode, a transverse block 39 is fixedly connected to the bottom of the movable block 38, a sliding groove 33 connected with the transverse block 39 in a sliding mode is formed in the connecting plate 21, a bent block 40 is fixedly connected to the movable block 38, a stop block 41 is connected to the bent block 40 in a rotating mode, and a torsion spring 42 is arranged between the stop block 41 and the bent block 40.

One end of the spring IV 37 is fixedly connected with the bending part of the connecting plate 21, the other end of the spring IV 37 is fixedly connected with the cylindrical block 36, and the elasticity of the spring IV 37 pushes the square block 35 to move to extend into the square groove 31 and the connecting hole 43.

The elastic force of the torsion spring 42 pushes the stop block 41 to rotate upwards until the stop block 41 is perpendicular to the side wall of the moving block 38, and the stop block 41 cannot continue to rotate upwards at the moment, when the stop block 41 is forced to rotate downwards, the stop block 41 can rotate to the gap hidden between the bent block 40 and the moving block 38, namely, the stop block 41 at the moment coincides with the moving block 38.

Therefore, when the operator directly presses down the clamping plate 11 so that the fixing block 15 on the clamping plate 11 directly contacts the stopper 41, the stopper 41 is not damaged. And when the clamping plate 11 continuously moves downwards, the stop block 41 is caused to coincide with the moving block 38, until the clamping plate 11 contacts with the stop block 41, the stop block 41 rotates under the elastic force of the torsion spring 42 and is positioned above the clamping plate 11, and therefore the clamping plate 11 cannot move upwards.

In summary, the embodiment provides that when objects such as plastic bags in the cabinet body 1 float under the action of the air flow, the plastic bags are directly sucked at the sleeve block 6 under the action of the air port 3:

the motor drives the screw 5 to rotate at this time, so that the sleeve block 6 moves downwards, and the eccentric wheel 25 at the end of the screw 5 rotates along with the screw at this time until the sleeve block 6 is completely separated from the tuyere 3. The eccentric wheel 25 pushes the sliding plate 29 to move, the third spring 28 is compressed until the clamping block 30 fixedly connected to the sliding plate 29 is separated from the clamping groove 20 formed in the bottom block 19, and the bottom block 19 is out of limit. The push plate 16 pushes the clamping plate 11 to move upwards together under the elastic force of the first spring 23 and the second spring 24. Until the clamping plate 11 clamps the plastic bag at the bottom of the sleeve block 6.

At this time, the tuyere 3 can normally function, and the plastic bag is fixed, so that the plastic bag does not shade the tuyere.

After the fume chamber is used, the cabinet door of the cabinet body 1 is opened, the round rod 34 is pushed until the square block 35 at the end part of the round rod 34 is far away from the side wall of the connecting plate 21, and the spring IV 37 is compressed by the cylindrical block 36. At this time, the round bar 34 is rotated, and the moving block 38 is moved on the connection plate 21 until the side wall of the moving block 38 is in contact with the cylindrical block 36. The pull handle 27 is pushed so that the slide plate 29 moves closer to the block 35 until the square slot 31 at the end of the slide plate 29 is aligned with the block 35.

The clamping plate 11 is pressed downwards until the clamping plate 11 and the pushing plate 16 move downwards together, the plastic bag between the clamping plate 11 and the sleeve block 6 is taken down, and the motor drives the screw rod 5 to rotate reversely, so that the sleeve block 6 moves upwards until the sleeve block 6 is sleeved at the tuyere 3 again.

The clamping plate 11 and the pushing plate 16 are continuously pushed to move downwards until the bottom block 19 at the bottom of the pushing plate 16 penetrates through the middle hole 22, and the clamping groove 20 formed on the bottom block 19 is aligned with the clamping block 30 on the sliding plate 29. The round bar 34 is rotated to enable the moving block 38 to move until the stop block 41 on the moving block 38 moves above the fixed block 15, the round bar 34 is pushed to move, the square block 35 is separated from the connecting hole 43 and the square groove 31, the clamping block 30 stretches into the clamping groove 20 under the elastic force of the third spring 28, and the position of the push plate 16 is fixed. And the moving block 38 at this time is still located above the fixed block 15. At this time, the round bar 34 is reversely rotated until the moving block 38 moves until the stopper 41 is disengaged from the fixed block 15.

The clamping plate 11 is in an initial state at this time, and can be used for the next treatment of the plastic bag or the like at the tuyere 3.

The previous description of the embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (7)

1. A biomedical fume hood, comprising:

the novel intelligent cabinet comprises a cabinet body (1), wherein a top plate (2) is arranged on the cabinet body (1), and an air port (3) is arranged on the top plate (2);

the vertical rod (4), the bottom fixedly connected with montant (4) of roof (2), the bottom of roof (2) still is equipped with motor drive rotatory screw rod (5), trompil one (9) sliding connection of seting up on montant (4) and cover piece (6), screw rod (5) and cover piece (6) are last screw hole one (10) of seting up through threaded connection, cover piece (6) are last to be setted up cover groove (7), cover groove (7) cover is in wind gap (3) department, bleeder vent one (8) that run through cover piece (6) are seted up to the inner wall of cover groove (7);

the clamping plate (11), the clamping plate (11) is provided with a first round hole (12) and a second round hole (13), the first round hole (12) is in sliding connection with the vertical rod (4), the second round hole (13) is in sliding connection with the screw rod (5), the bottom of the clamping plate (11) is abutted to a push plate (16), the push plate (16) is provided with a first vertical hole (17) and a second vertical hole (18), and the first vertical hole (17) and the second vertical hole (18) are respectively in sliding connection with the vertical rod (4) and the screw rod (5);

the connecting plate (21), the tip fixedly connected with connecting plate (21) of montant (4), and connecting plate (21) are connected with screw rod (5) rotation, cover respectively on montant (4) and screw rod (5) is equipped with spring one (23) and spring two (24), be equipped with the locating part to push pedal (16) position limitation on connecting plate (21).

2. The biological medicine fume chamber according to claim 1, wherein the limiting member comprises a side plate (32) fixedly connected with the connecting plate (21), the side plate (32) is connected with a slide bar (26) in a sliding manner, one end of the slide bar (26) is fixedly connected with a handle (27), the other end is fixedly connected with a slide plate (29), the connecting plate (21) is provided with a middle hole (22), the slide plate (29) is fixedly connected with a clamping block (30), the slide bar (26) is sleeved with a spring III (28), the bottom of the push plate (16) is fixedly connected with a bottom block (19) which is connected with the middle hole (22) in a sliding manner, the bottom block (19) is provided with a clamping groove (20), the end part of the screw (5) is fixedly connected with an eccentric wheel (25), the outer wall of the eccentric wheel (25) is contacted with the side wall of the slide plate (29), and the connecting plate (21) is further provided with an adjusting member for limiting the positions of the slide plate (29) and the clamping plate (11).

3. The biomedical ventilation cabinet according to claim 2, wherein the two ends of the sliding plate (29) are bent, the bent part is slidably connected with the outer wall of the connecting plate (21), one end of the third spring (28) is fixedly connected with the side plate (32), the other end of the third spring is fixedly connected with the side wall of the sliding plate (29), and the third spring (28) pushes the clamping block (30) to extend into the clamping groove (20).

4. The biomedical ventilation cabinet according to claim 1, wherein one ends of the first spring (23) and the second spring (24) are fixedly connected with the upper surface of the connecting plate (21), the other ends of the first spring (23) and the second spring (24) are fixedly connected with the lower surface of the push plate (16), and the elastic force of the first spring (23) and the second spring (24) pushes the push plate (16) to move upwards until the push plate (16) pushes the clamping plate (11) to move upwards to abut against the sleeve block (6).

5. The biological medicine fume chamber according to claim 2, wherein the adjusting member comprises a fixed block (15) fixedly connected with the clamping plate (11), a square groove (31) is formed in the end portion of the sliding plate (29), a connecting hole (43) matched with the square groove (31) is formed in the connecting plate (21), a round rod (34) is slidingly connected with the connecting plate (21), a square block (35) is rotationally connected with the end portion of the round rod (34), a cylindrical block (36) is fixedly connected with the round rod (34), a spring four (37) is sleeved on the round rod (34), a moving block (38) is connected with the round rod (34) through threads, a transverse block (39) is fixedly connected with the bottom of the moving block (38), a sliding groove (33) slidingly connected with the transverse block (39) is formed in the connecting plate (21), a stop block (41) is rotationally connected with the bending block (40), and a torsion spring (42) is arranged between the bending block (41).

6. A biomedical ventilation cabinet according to claim 1, characterized in that one end of the spring four (37) is fixedly connected with the bending part of the connecting plate (21), the other end is fixedly connected with the cylindrical block (36), and the elasticity of the spring four (37) pushes the square block (35) to move to extend into the square groove (31) and the connecting hole (43).

7. A biomedical ventilation cabinet according to claim 5, wherein the elastic force of the torsion spring (42) pushes the stopper (41) to rotate upwards until the stopper (41) is perpendicular to the side wall of the moving block (38), and the stopper (41) cannot continue to rotate upwards, and when the stopper (41) is forced to rotate downwards, the stopper (41) can rotate to a position hidden in the gap between the bent block (40) and the moving block (38), that is, the stopper (41) coincides with the moving block (38).