CN112404083A - Exhaust mechanism for experiment fume chamber - Google Patents
Exhaust mechanism for experiment fume chamber Download PDFInfo
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- CN112404083A CN112404083A CN201910781264.8A CN201910781264A CN112404083A CN 112404083 A CN112404083 A CN 112404083A CN 201910781264 A CN201910781264 A CN 201910781264A CN 112404083 A CN112404083 A CN 112404083A
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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
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Abstract
The invention discloses an exhaust mechanism for an experimental fume hood, which comprises a main body, a first exhaust hood, a second exhaust hood and a connecting pipe, wherein a moisture processing mechanism and a sealing mechanism are arranged at the left end and the inner right end of the top of the connecting pipe, when gas with moisture is required to be extracted, the second exhaust hood is used for extracting the gas, a starting motor starts to work to enable a connecting shaft in the sealing mechanism to rotate, then a cover plate is closed under the action of a swinging rod and a cross rod to realize sealing, then a belt pulley drives the rotating rod in the closing mechanism to rotate, under the action of a rotating block and a connecting rod, fan blades of the rotating block are opened, an exhaust fan in a pipe body is started to work in cooperation with an axial flow fan, the moisture in the pipe body is adsorbed by a filter screen and then heated by an electric heating pipe to reduce the occurrence of condensation, and when inflammable and explosive gas is extracted, the temperature of the electric heating tube needs to be adjusted to a safe range, the effect is good, and the treatment efficiency is high.
Description
Technical Field
The invention relates to the field of experiment fume hoods, in particular to an exhaust mechanism for an experiment fume hood.
Background
The fume hood mainly has an exhaust function, various harmful gases, odor, moisture and flammable, explosive and corrosive substances are generated in the experiment operation process in a chemical laboratory, the fume hood is used near a pollution source in order to protect the safety of a user and prevent the diffusion of the pollutants in the experiment to the laboratory, and an exhaust mechanism is an essential part in the fume hood.
In the middle of the use process of the exhaust mechanism, moisture exists in the extracted gas and is easy to remain in the pipeline, so that condensation exists in the pipeline, and the gas easily flows backwards when flowing in the pipeline in the mechanism and flows into the other exhaust hood to cause leakage.
Disclosure of Invention
Therefore, in order to solve the above-mentioned disadvantages, the present invention provides an exhaust mechanism for an experimental fume hood.
The invention is realized in such a way that an exhaust mechanism for an experimental fume hood is constructed, the device comprises a main body, a first exhaust hood, a second exhaust hood, a connecting pipe, a discharge pipe, a sealing mechanism, a moisture processing mechanism, an axial flow fan, a connecting wire, a first protecting net and a second protecting net, wherein the right end of the bottom of the main body is provided with the first exhaust hood, the left end of the first exhaust hood is provided with the second exhaust hood, the middle parts of the top ends of the first exhaust hood and the second exhaust hood are fixed with the connecting pipe through an installation pipe, the right end of the inside of the connecting pipe is provided with the sealing mechanism, the left end of the top of the connecting pipe is provided with the moisture processing mechanism, the left end of the bottom of the connecting pipe is fixed with the discharge pipe, the left end of the bottom of the discharge pipe is provided with the axial flow fan, the bottom of the discharge pipe is provided with the connecting wire, the first, the axial flow fan is electrically connected with the connecting wire, the moisture treatment mechanism comprises a pipe body, an electric heating pipe, an exhaust fan, hygroscopic cotton, a primary filter screen and a closing mechanism, the electric heating pipe is arranged at the upper left end in the pipe body, the upper end and the lower end of the electric heating pipe are fixed with the pipe body through locking pieces, the exhaust fan is arranged at the position 15cm away from the right end of the electric heating pipe, the hygroscopic cotton is arranged at the lower right end of the exhaust fan, the left end and the right end of the hygroscopic cotton are fixed with the pipe body, the primary filter screen is arranged at the bottom of the hygroscopic cotton, the closing mechanism is arranged at the lower end of the primary filter screen, the left end and the right end of the bottom of the pipe body are both fixed with the connecting pipe and are communicated with each other, the sealing mechanism comprises a cover body, a first fixing part, four groups of first fixing parts are uniformly distributed on the left side of the cover body and are welded with the cover body, a first connecting shaft is arranged in the first fixing part, the right side of the first connecting shaft penetrates through the cover body and is fixed with the left end in the cover plate, the middle part in the second belt pulley is rotatably connected with the first connecting shaft at the bottommost part, the left end of the outer diameter surface of the first connecting shaft is fixed with an output shaft on the right side of the motor, the bottom of the motor is fixed with the bottom plate, the right side of the bottom plate is welded with the cover body, the right end in the cover plate is fixed with a second connecting shaft, the right side of the second connecting shaft penetrates through the cover body and is rotatably connected with the coupler, four groups of second fixing parts are uniformly distributed on the right side of the cover body, a second connecting shaft is arranged in the second fixing part, and the inner lower end of the oscillating rod is rotatably connected with the connecting cross rod through a rotating shaft, the front end and the rear end of the outer diameter surface of the cover body are fixed with the connecting pipe, and the front end and the rear end of the outer diameter surface of the cover body are communicated with the connecting pipe.
Preferably, the closing mechanism comprises a shell, a top cover, a rotating rod, fan blades, a gear box, a first belt pulley, a rotating block, three groups of rotating rods, a connecting block, a spring, a driven gear and a driving gear, wherein the top cover is arranged at the top of the shell, four ends in the top cover are fixed with the shell through bolts, the three groups of rotating rods are uniformly distributed at the left end and the right end in the shell, the fan blades are welded on the outer diameter surface of the rotating rod, the gear box is arranged in the middle of the right side of the shell, the first belt pulley is arranged at the rear end of the right side of the gear box, the first belt pulley and the second belt pulley are rotatably connected through a belt, the left side of the rotating rod penetrates through the shell and is rotatably connected with the rotating block, the lower end in the rotating block is rotatably connected with the connecting, and the spring rear end is fixed with the casing through the locking piece, the middle part is provided with driven gear in the gear box to middle part and middle part dwang peg graft in the driven gear, driven gear right side and driving gear intermeshing to middle part carries out rotation connection through axostylus axostyle and first belt pulley in the driving gear, upper end and casing bottom are fixed and both link up each other with the body in the top cap.
Preferably, the back of the upper end in the pipe body is provided with an access cover, and the access cover is connected with the pipe body through a bolt.
Preferably, the thickness of the absorbent cotton is 1.3cm, and the thickness of the primary filter screen is 0.8 cm.
Preferably, a layer of sealing silica gel is bonded on the front end face and the back face of the cover body, and the thickness of the sealing silica gel is 1.5 cm.
Preferably, the cover plates are all provided with four groups, the upper group and the lower group are semicircular, the middle group of cover plates are square, and the four groups of cover plates are matched with each other.
Preferably, the length of the connecting cross rod is two thirds of the height of the cover body, and the width of the connecting cross rod is 4 cm.
Preferably, a circular opening is formed in the top cover, and a rubber layer is attached to the joint of the circular opening and the connecting pipe.
Preferably, the length of the spring is two thirds of the length of the connecting rod, hooks are arranged at the left end and the right end of the spring, and the two groups of hooks are respectively fixed with the connecting block and the locking piece at the left end of the shell.
Preferably, the motor adopts a 180-series servo motor.
Preferably, the axial flow fan is of an FG pipeline type.
The invention has the following advantages: the invention provides an exhaust mechanism for an experimental fume hood by improvement, and compared with the same type of equipment, the exhaust mechanism has the following improvements and advantages;
the invention relates to an exhaust mechanism for an experimental fume hood, which is characterized in that a moisture treatment mechanism and a sealing mechanism are arranged at the left end and the inner right end of the top of a connecting pipe, when gas with moisture is required to be extracted, a second air extraction cover is used for extracting the gas, a starting motor starts to work, a connecting shaft in the sealing mechanism is enabled to rotate, a cover plate is closed under the action of a swinging rod and a cross rod to realize sealing, then the belt pulley is used for driving a rotating rod in a closing mechanism to rotate, fan blades of the rotating rod are opened under the action of a rotating block and a connecting rod, an exhaust fan in a pipe body is started to work in cooperation with an axial flow fan, the moisture in the pipe body is adsorbed by a filter screen and then heated by an electric heating pipe, the occurrence of condensation is reduced, the temperature of the electric heating pipe needs to be adjusted to a safe range when inflammable and explosive gas is extracted, the treatment efficiency is high.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the internal structure of the present invention;
FIG. 3 is a schematic view of the closure mechanism of the present invention;
FIG. 4 is a schematic view of the left side of the housing of the present invention;
FIG. 5 is a schematic view of a pulley connection configuration of the present invention;
FIG. 6 is an enlarged structural view of the left side area A of the shell of the present invention;
FIG. 7 is a schematic view of the sealing mechanism of the present invention;
fig. 8 is a right side structural schematic view of the sealing mechanism of the present invention.
Wherein: a main body-1, a first air extraction cover-2, a second air extraction cover-3, a connecting pipe-4, a sealing mechanism-5, a moisture processing mechanism-6, a discharge pipe-7, an axial flow fan-8, a connecting wire-9, a first protecting net-10, a second protecting net-11, a pipe body-61, an electric heating pipe-62, an exhaust fan-63, moisture absorption cotton-64, a primary filter screen-65, a closing mechanism-66, a shell-661, a top cover-662, a rotating rod-663, a fan blade-664, a gear box-665, a first belt pulley-666, a rotating block-667, a connecting rod-668, a connecting block-669, a spring-6610, a driven gear-6611, a driving gear-6612, a cover body-51, a first fixing member-52, a second fixing member-, A first connecting shaft-53, a cover plate-54, a second belt pulley-55, a bottom plate-56, a motor-57, a second connecting shaft-58, a second fixing piece-59, a coupler-510, a swinging rod-511 and a connecting cross rod-512.
Detailed Description
The present invention will be described in detail below with reference to fig. 1 to 8, and the technical solutions in the embodiments of the present invention will be clearly and completely described, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides an exhaust mechanism for an experimental ventilation cabinet through improvement, which comprises a main body 1, a first exhaust hood 2, a second exhaust hood 3, a connecting pipe 4, a discharge pipe 7, a sealing mechanism 5, a moisture processing mechanism 6, an axial flow fan 8, a connecting wire 9, a first protective net 10 and a second protective net 11, wherein the right end of the bottom of the main body 1 is provided with the first exhaust hood 2, the left end of the first exhaust hood 2 is provided with the second exhaust hood 3, the middle parts of the top ends of the first exhaust hood 2 and the second exhaust hood 3 are fixed with the connecting pipe 4 through an installation pipe, the right end in the connecting pipe 4 is provided with the sealing mechanism 5, the left end of the top of the connecting pipe 4 is provided with the moisture processing mechanism 6, the left end of the bottom of the connecting pipe 4 is fixed with the discharge pipe 7, the left end of the bottom of the discharge pipe 7 is provided with the axial flow fan 8, the bottom of the discharge pipe, the second protecting net 11 is welded at the inner lower end of the second air suction hood 3, the axial flow fan 8 is electrically connected with the connecting wire 9, the moisture processing mechanism 6 comprises a pipe body 61, an electric heating pipe 62, an exhaust fan 63, moisture absorption cotton 64, a primary filter screen 65 and a closing mechanism 66, the electric heating pipe 62 is arranged at the upper left end in the pipe body 61, the upper end and the lower end of the electric heating pipe 62 are fixed with the pipe body 61 through locking pieces, the exhaust fan 63 is arranged at the position 15cm away from the right end of the electric heating pipe 62, the moisture absorption cotton 64 is arranged at the lower right end of the exhaust fan 63, the left end and the right end of the moisture absorption cotton 64 are fixed with the pipe body 61, the primary filter screen 65 is arranged at the bottom of the moisture absorption cotton 64, the closing mechanism 66 is arranged at the lower end of the primary filter screen 65, the left end and the right end of the, A bottom plate 56, a motor 57, a second connecting shaft 58, a second fixing piece 59, a coupler 510, a swing lever 511 and a connecting cross bar 512, wherein four groups of first fixing pieces 52 are uniformly distributed on the left side of the cover body 51, the first fixing pieces 52 are welded with the cover body 51, a first connecting shaft 53 is arranged in the first fixing pieces 52, the right side of the first connecting shaft 53 penetrates through the cover body 51 and is fixed with the left end in the cover plate 54, the middle part in the second belt pulley 55 is rotatably connected with the first connecting shaft 53 at the bottom, the left end of the outer diameter surface of the first connecting shaft 53 is fixed with the output shaft at the right side of the motor 57, the bottom of the motor 57 is fixed with the bottom plate 56, the right side of the bottom plate 56 is welded with the cover body 51, the right end in the cover plate 54 is fixed with the second connecting shaft 58, the right side of the second connecting shaft 58 penetrates through the cover body, a second connecting shaft 58 is provided in the second fixing member 59, the right side of the second connecting shaft 58 is rotatably connected to the swing lever 511 via a coupling 510, the inner lower end of the swing lever 511 is rotatably connected to the connecting cross bar 512 via a rotating shaft, and the front and rear ends of the outer diameter surface of the cover 51 are fixed to the connecting pipe 4 and are communicated with each other.
Further, the closing mechanism 66 includes a housing 661, a top cover 662, a rotation rod 663, fan blades 664, a gear box 665, a first pulley 666, a rotation block 667, a connection rod 668, a connection block 669, a spring 6610, a driven gear 6611 and a driving gear 6612, the top cover 662 is arranged on the top of the housing 661, four ends of the top cover 662 are fixed with the housing 661 through bolts, three sets of rotation rods 663 are uniformly distributed at the left and right ends of the housing 661, the fan blades 664 are welded on the outer diameter surface of the rotation rod 663, the gear box 665 is arranged in the middle of the right side of the housing 661, the first pulley 666 is arranged at the rear end of the right side of the gear box 665, the first pulley 666 is rotatably connected with the second pulley 55 through a belt, the rotation rod 663 penetrates through the housing 661 in the left side and is rotatably connected with the rotation block 667, the lower end of the, the utility model discloses a gearbox, including casing 661, gear box 665, top cap 662, casing 661, foremost dwang 663 outer diameter surface left end and connecting block 669 rotate and be connected, the upper end is provided with spring 6610 in the connecting block 669 to spring 6610 rear end is fixed with the casing 661 through the locking piece, the middle part is provided with driven gear 6611 in the gear box 665, and middle part dwang 663 peg graft in the driven gear 6611, driven gear 6611 right side and driving gear 6612 intermeshing, and the middle part is rotated through axostylus axostyle and first belt pulley 666 and is connected in the driving gear 6612, upper end and casing 661 bottom are fixed and both link up each other with body 61 in the top cap 662, and closed effectual, response speed is fast.
Further, the back of the upper end in the pipe body 61 is provided with an access cover, and the access cover is connected with the pipe body 61 through bolts, so that the inside of the pipe body is conveniently maintained and overhauled.
Furthermore, the thickness of the absorbent cotton 64 is 1.3cm, the thickness of the primary filter screen 65 is 0.8cm, the thickness is moderate, and the effect is better.
Further, the cover body 51 front end face and the back all bond one deck sealing silica gel to sealing silica gel thickness is 1.5cm, prevents to leak at the during operation emergence, influences work efficiency.
Furthermore, the cover plates 54 are provided with four groups, the upper group and the lower group are semicircular, the middle group is square, and the four groups of cover plates 54 are matched with each other, so that the closing effect is good and the cover plates do not conflict with each other.
Further, the length of the connecting cross rod 512 is two thirds of the height of the cover body 51, and the width of the connecting cross rod 512 is 4cm, so that the stability is strong and the durability is high.
Further, be provided with circular opening in the top cap 662 to circular opening has the one deck rubber layer with the laminating of connecting pipe 4 junction, and the leakproofness is good, prevents that work from taking place to leak.
Further, the length of the spring 6610 is two thirds of the length of the connecting rod 668, hooks are arranged at the left end and the right end of the spring 6610, and the two groups of hooks are respectively fixed with the connecting block 669 and the locking piece at the left end of the shell 661, so that the stability is good, the fixity is strong, and the tensile capability is high.
Furthermore, the motor 57 adopts a 180-series servo motor, so that the durability is good, the energy consumption is low, and the response speed is high.
Further, the axial flow fan 8 is of an FG pipeline type, and is low in noise and long in service life.
The invention provides an exhaust mechanism for an experimental ventilation cabinet through improvement, which operates as follows;
firstly, when the equipment needs to be used, the bottoms of a first air exhaust cover 2 and a second air exhaust cover 3 at the bottom of a main body 1 are installed at the top installation position of a ventilation cabinet, and then a connecting wire is connected to a ventilation cabinet controller and a power supply, so that required electric energy can be provided for the equipment to work;
secondly, when exhaust gas needs to be extracted, the axial flow fan 8 is started to work, the exhaust gas in the fume hood can be exhausted through the connecting pipes 4 to the two groups of air extraction hoods, when some exhaust gas with moisture needs to be extracted, the motor 57 is started to work by the controller, the output shaft on the right side of the motor 57 drives the first connecting shaft 53 to rotate, the right side of the first connecting shaft 53 can drive the second connecting shaft 58 to rotate through the cover plate 54, then the right side of the second connecting shaft 58 can drive the swing rod 511 to rotate through the coupler 510, then under the drive of the connecting cross rod 512, the cover plate 54 in the hood body 51 can be closed, so that the first air extraction hood 2 is in a closed state, because the motor 57 can drive the second belt pulley 55 to rotate when rotating, the second belt pulley 55 can drive the first belt pulley 66 to rotate through a belt, when the first belt pulley 66 rotates, the driving gear 6612 inside can drive the driven gear 6611 to rotate, and finally the rotating rod 663 inside the closing mechanism 66 can be driven to rotate, and the three groups of rotating rods 663 open the fan blades 664 on the surfaces of the rotating rods 663 under the action of the left rotating block 667 and the connecting rod 668;
third, air exhauster 63 in body 61 starts after that, produce the centrifugation and bleed into the gas in the connecting pipe 4, cooperation axial fan 8 carries out high-efficient extraction, the air in entering body 61, carry out filtration purification by cotton 64 and the first filter screen 65 of just imitating, carry out and heat by electrothermal tube 62, discharge pipe 7 is gone into in succession, discharge by axial fan 8 at last, prevent that moisture or condensation from being discharged by first suction hood 2, the effect is good, when extracting inflammable and explosive gas, need to transfer electrothermal tube 62 temperature to safety range.
The invention provides an exhaust mechanism for an experimental fume hood through improvement, the device is provided with a moisture processing mechanism 6 and a sealing mechanism 5 at the left end and the inner right end of the top of a connecting pipe 4, when gas with moisture is required to be extracted, a second air extraction cover 3 is used for extracting, a starting motor 57 starts to work, a connecting shaft in the sealing mechanism 5 is enabled to rotate, a cover plate is closed under the action of a swinging rod 511 and a cross rod to realize sealing, then belt pulley transmission is carried out, a rotating rod in a closing mechanism 66 is enabled to rotate, fan blades 664 of the rotating block 667 and a connecting rod 668 are enabled to be opened, an exhaust fan 63 in the pipe body 4 is started to work in cooperation with an axial flow fan 8, the moisture in the pipe body 4 is adsorbed by a filter screen and then heated by an electric heating pipe 62, the occurrence of condensation is reduced, when the inflammable and explosive gas is extracted, the temperature of the electric heating tube 62 needs to be adjusted to a safe range, the effect is good, and the treatment efficiency is high.
The previous description of the disclosed 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 (9)
1. An exhaust mechanism for an experimental fume hood comprises a main body (1), a first air exhaust cover (2), a second air exhaust cover (3), a connecting pipe (4), a discharge pipe (7), an axial flow fan (8), a connecting wire (9), a first protecting net (10) and a second protecting net (11), wherein the first air exhaust cover (2) is arranged at the right end of the bottom of the main body (1), the second air exhaust cover (3) is arranged at the left end of the first air exhaust cover (2), the middle parts of the top ends of the first air exhaust cover (2) and the second air exhaust cover (3) are fixed with the connecting pipe (4) through an installation pipe, a sealing mechanism (5) is arranged at the inner right end of the connecting pipe (4), a moisture processing mechanism (6) is arranged at the left end of the top of the connecting pipe (4), the left end of the bottom of the connecting pipe (4) is fixed with the discharge pipe (7), the axial flow fan (8) is arranged at, a connecting wire (9) is arranged at the bottom of the discharge pipe (7), a first protective net (10) is welded at the inner lower end of the first air exhaust cover (2), a second protective net (11) is welded at the inner lower end of the second air exhaust cover (3), and the axial flow fan (8) is electrically connected with the connecting wire (9);
the method is characterized in that: the device is characterized by further comprising a sealing mechanism (5) and a moisture processing mechanism (6), wherein the moisture processing mechanism (6) comprises a pipe body (61), an electric heating pipe (62), an exhaust fan (63), hygroscopic cotton (64), a primary filter screen (65) and a closing mechanism (66), the electric heating pipe (62) is arranged at the upper left end in the pipe body (61), the upper end and the lower end of the electric heating pipe (62) are fixed with the pipe body (61) through locking pieces, the exhaust fan (63) is arranged at the position 15cm away from the right end of the electric heating pipe (62), the hygroscopic cotton (64) is arranged at the lower right end of the exhaust fan (63), the left end and the right end of the hygroscopic cotton (64) are fixed with the pipe body (61), the primary filter screen (65) is arranged at the bottom of the hygroscopic cotton (64), the closing mechanism (66) is arranged at the lower end of the primary filter screen (65), the left end, the sealing mechanism (5) comprises a cover body (51), a first fixing piece (52), a first connecting shaft (53), a cover plate (54), a second belt pulley (55), a bottom plate (56), a motor (57), a second connecting shaft (58), a second fixing piece (59), a coupler (510), a swing rod (511) and a connecting cross rod (512), wherein four groups of the first fixing pieces (52) are uniformly distributed on the left side of the cover body (51), the first fixing piece (52) is welded with the cover body (51), the first connecting shaft (53) is arranged in the first fixing piece (52), the right side of the first connecting shaft (53) penetrates through the cover body (51) and is fixed with the inner left end of the cover plate (54), the inner middle of the second belt pulley (55) is rotatably connected with the first connecting shaft (53) at the bottommost part, and the left end of the outer diameter surface of the first connecting shaft (53) is fixed with the right output shaft of the motor (57), motor (57) bottom is fixed with bottom plate (56) to bottom plate (56) right side and cover body (51) weld, the right-hand member is fixed with second connecting axle (58) in apron (54), second connecting axle (58) right side is run through cover body (51) and is rotated with shaft coupling (510) and be connected, cover body (51) right side evenly distributed has four groups of second mounting (59), and be provided with second connecting axle (58) in second mounting (59), second connecting axle (58) right side is passed through shaft coupling (510) and is rotated with swinging arms (511) and is connected, and lower extreme rotates through axis of rotation and connection horizontal pole (512) in swinging arms (511) and is connected, both ends are fixed and both link up each other with connecting pipe (4) around cover body (51) external diameter surface.
2. The exhaust mechanism for the experimental fume hood as claimed in claim 1, wherein: the closing mechanism (66) comprises a shell (661), a top cover (662), a rotating rod (663), fan blades (664), a gear box (665), a first belt pulley (666), a rotating block (667), a connecting rod (668), a connecting block (669), a spring (6610), a driven gear (6611) and a driving gear (6612), wherein the top cover (662) is arranged at the top of the shell (661), four ends in the top cover (662) are fixed with the shell (661) through bolts, three groups of rotating rods (663) are uniformly distributed at the left end and the right end in the shell (661), the fan blades (664) are welded on the outer diameter surface of the rotating rods (663), the gear box (665) is arranged in the middle of the right side of the shell (661), the first belt pulley (666) is arranged at the rear end of the right side of the gear box (665), and the first belt pulley (666) is rotatably connected, the left side of the rotating rod (663) penetrates through the shell (661) to be connected with the rotating block (667) in a rotating way, the inner lower end of the rotating block (667) is rotatably connected with the connecting rod (668) through a shaft lever, the left end of the outer diameter surface of the rotating rod (663) at the foremost end in the shell (661) is rotatably connected with a connecting block (669), the upper end in the connecting block (669) is provided with a spring (6610), the rear end of the spring (6610) is fixed with the shell (661) through a locking piece, a driven gear (6611) is arranged in the middle of the gear box (665), and the middle part in the driven gear (6611) is inserted with the middle rotating rod (663), the right side of the driven gear (6611) is meshed with the driving gear (6612), and the inner middle part of the driving gear (6612) is rotationally connected with a first belt pulley (666) through a shaft lever, the upper end in top cap (662) and the bottom of casing (661) are fixed with pipe body (61) and both are communicated with each other.
3. The exhaust mechanism for the experimental fume hood as claimed in claim 1, wherein: an access cover is arranged on the back of the inner upper end of the pipe body (61), and the access cover is connected with the pipe body (61) through bolts.
4. The exhaust mechanism for the experimental fume hood as claimed in claim 1, wherein: the thickness of the moisture absorption cotton (64) is 1.3cm, and the thickness of the primary filter screen (65) is 0.8 cm.
5. The exhaust mechanism for the experimental fume hood as claimed in claim 2, wherein: the front end face and the back face of the cover body (51) are both bonded with a layer of sealing silica gel, and the thickness of the sealing silica gel is 1.5 cm.
6. The exhaust mechanism for the experimental fume hood as claimed in claim 1, wherein: the cover plates (54) are all provided with four groups, the upper group and the lower group are semicircular, the middle group of cover plates are square, and the four groups of cover plates (54) are mutually matched.
7. The exhaust mechanism for the experimental fume hood as claimed in claim 1, wherein: the length of the connecting cross rod (512) is two thirds of the height of the cover body (51), and the width of the connecting cross rod (512) is 4 cm.
8. The exhaust mechanism for the experimental fume hood as claimed in claim 2, wherein: a round opening is arranged in the top cover (662), and a rubber layer is attached to the joint of the round opening and the connecting pipe (4).
9. The exhaust mechanism for the experimental fume hood as claimed in claim 2, wherein: the length of the spring (6610) is two thirds of the length of the connecting rod (668), hooks are arranged at the left end and the right end of the spring (6610), and the two groups of hooks are respectively fixed with the connecting block (669) and the locking piece at the left end of the shell (661).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910781264.8A CN112404083A (en) | 2019-08-23 | 2019-08-23 | Exhaust mechanism for experiment fume chamber |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910781264.8A CN112404083A (en) | 2019-08-23 | 2019-08-23 | Exhaust mechanism for experiment fume chamber |
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| CN112404083A true CN112404083A (en) | 2021-02-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115318053A (en) * | 2022-08-03 | 2022-11-11 | 浙江科恩实验设备有限公司 | Air extraction method of atom air extraction hood device and atom air extraction hood device |
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| CN207342472U (en) * | 2017-09-13 | 2018-05-11 | 天津孚音生物科技发展有限公司 | A kind of side air draft vent cabinet exhaust treatment system |
| CN208493737U (en) * | 2018-05-18 | 2019-02-15 | 广州市波士特实验室设备有限公司 | A kind of corrosion-resistant vent cabinet of intelligence |
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| CN115318053A (en) * | 2022-08-03 | 2022-11-11 | 浙江科恩实验设备有限公司 | Air extraction method of atom air extraction hood device and atom air extraction hood device |
| CN115318053B (en) * | 2022-08-03 | 2023-10-24 | 浙江科恩实验设备有限公司 | Atomic gas extraction cover device and gas extraction method thereof |
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Application publication date: 20210226 |