CN114749454B - Explosion-proof glass plate of laboratory fume chamber and laboratory fume chamber - Google Patents
Explosion-proof glass plate of laboratory fume chamber and laboratory fume chamber Download PDFInfo
- Publication number
- CN114749454B CN114749454B CN202210521376.1A CN202210521376A CN114749454B CN 114749454 B CN114749454 B CN 114749454B CN 202210521376 A CN202210521376 A CN 202210521376A CN 114749454 B CN114749454 B CN 114749454B
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- China
- Prior art keywords
- frame
- plate
- fixedly connected
- groove
- fume chamber
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- 239000003517 fume Substances 0.000 title claims abstract description 86
- 239000011521 glass Substances 0.000 title claims abstract description 52
- 238000009434 installation Methods 0.000 claims abstract description 21
- 230000000149 penetrating effect Effects 0.000 claims abstract description 11
- 239000005341 toughened glass Substances 0.000 claims description 12
- 230000002457 bidirectional effect Effects 0.000 claims description 10
- 238000001125 extrusion Methods 0.000 claims description 9
- 238000009423 ventilation Methods 0.000 claims description 7
- 239000012790 adhesive layer Substances 0.000 claims description 6
- 239000011148 porous material Substances 0.000 claims description 6
- 238000004880 explosion Methods 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims 3
- 230000000694 effects Effects 0.000 abstract description 13
- 239000007789 gas Substances 0.000 description 11
- 230000000712 assembly Effects 0.000 description 8
- 238000000429 assembly Methods 0.000 description 8
- 230000002349 favourable effect Effects 0.000 description 7
- 239000003292 glue Substances 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 239000010410 layer Substances 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 3
- 239000012634 fragment Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B13/00—Accessories or details of general applicability for machines or apparatus for cleaning
Abstract
The application discloses explosion-proof glass board and laboratory fume chamber of laboratory fume chamber belongs to the technical field of laboratory equipment, and it includes installing frame, frame and explosion-proof glass board body of installing on the fume chamber body, fixedly connected with connecting block on the frame, fixedly connected with locating piece on the installing frame, rotate on the locating piece and install the dwang, the dwang passes the connecting block and with connecting block fixed connection, fixedly connected with torsional spring on the locating piece, the tip and the connecting block fixed connection of locating piece are kept away from to the torsional spring; the installation frame is internally provided with a fixing component for fixing the frame, the fixing component comprises a moving plate which is arranged in the installation frame in a sliding penetrating mode, a connecting rod fixedly connected to the moving plate and a limiting ball fixedly connected to the connecting rod, the frame is provided with a containing groove for containing the limiting ball, and the installation frame is provided with a pressure relief component for moving the moving plate. This application has the effect of the security that improves the fume chamber.
Description
Technical Field
The application relates to the technical field of laboratory equipment, in particular to an explosion-proof glass plate of a laboratory fume hood and the laboratory fume hood.
Background
In chemical experiments, various harmful gases, odor or inflammable and explosive substances can be generated in the experimental operation, in order to ensure the safety of workers in the laboratory, the workers in the laboratory are prevented from inhaling toxic gases, the substances generated in the experiment are also prevented from being diffused in the laboratory, and the workers generally use a fume hood to perform the experiment.
In the related art, a control mode of up-and-down movement is generally adopted for a glass plate of a laboratory fume hood, when experimental substances in the fume hood explode, the air pressure in the fume hood is rapidly increased, the glass plate is easily broken in a space without pressure relief due to the increased air pressure, and the splashed glass is easy to injure nearby operators.
Disclosure of Invention
In order to improve the security of fume hood, this application provides an explosion-proof glass board and laboratory fume hood of laboratory fume hood.
The application provides an explosion-proof glass board of laboratory fume chamber adopts following technical scheme:
the utility model provides an explosion-proof glass board and laboratory fume chamber of laboratory fume chamber, includes install in the mounting frame on the fume chamber body, set up in frame on the mounting frame and install in explosion-proof glass board body in the frame, fixedly connected with connecting block on the frame, fixedly connected with locating piece on the mounting frame, rotate on the locating piece and install the dwang, the dwang pass the connecting block and with connecting block fixed connection, fixedly connected with torsional spring on the locating piece, the torsional spring keep away from the tip of locating piece with connecting block fixed connection; the installation frame is internally provided with a fixing component used for fixing the frame, the fixing component comprises a moving plate, a connecting rod and a limiting ball, wherein the moving plate is arranged in the installation frame in a sliding penetrating mode, the connecting rod is fixedly connected to the moving plate, the limiting ball is fixedly connected to the connecting rod, the frame is provided with a containing groove used for containing the limiting ball, and the installation frame is provided with a pressure relief component used for moving the moving plate.
Through adopting above-mentioned technical scheme, under explosion-proof glass board body is in the closed condition, when explosion-proof material in the fume chamber body takes place the explosion, the pressure release subassembly makes the movable plate remove, the movable plate removes and makes the connecting rod remove, the connecting rod removes and drives spacing ball and break away from the holding tank on the frame, thereby remove the locking of frame, the dwang rotates under the effect of torsional spring, the dwang rotates and drives the connecting block and remove, the connecting block removes and makes frame and explosion-proof glass board body open, thereby make high-pressure gas discharge, prevent that gas from destroying explosion-proof glass board body, be favorable to protecting nearby operating personnel, and then improve the security of fume chamber.
Preferably, a moving groove for sliding fit with the moving plate is formed in the frame, a fixed plate is arranged on the inner side wall of the moving groove in a sliding mode, a clamping groove for sliding fit with the moving plate is formed in the fixed plate, a first spring is fixedly connected to the moving plate, and the end portion, away from the moving plate, of the first spring is fixedly connected with the inner side wall of the clamping groove; offer in the frame be used for with the first guide way that the movable groove is linked together, pressure release subassembly including fixed connection in gasbag on the first guide way inside wall and set up in stripper plate on the gasbag, the stripper plate with the inside wall of first guide way slides the cooperation, the stripper plate with the tip that the fixed plate is close to each other all is provided with the inclined plane, the stripper plate with the inclined plane assorted of fixed plate, be provided with in the frame and be used for resetting the first piece that resets of fixed plate, be provided with in the frame and be used for resetting the second piece that resets of stripper plate, be provided with in the installation frame and be used for the gassing subassembly of gasbag gassing.
Through adopting above-mentioned technical scheme, when this internal atmospheric pressure of cabinet of ventilating increases, the gassing subassembly is the gasbag gassing, after the gas release in the gasbag, the stripper plate rises along first guide way under the effect of second restoring to the throne, the fixed plate gets into first guide way under the effect of first restoring to the throne this moment, the fixed plate removes and drives the movable plate and remove, the movable plate removes and drives connecting rod and spacing ball and remove to release the locking of spacing ball to the frame, frame and explosion-proof glass board body are automatic to be opened under the effect of torsional spring.
Preferably, the air release assembly comprises a pushing plate and an air release needle, wherein the pushing plate is arranged in the frame in a sliding penetrating mode, the air release needle is fixedly connected to the pushing plate, a valve core is arranged on the side face, close to the air release needle, of the air bag, a driving groove which is used for being in sliding fit with the pushing plate is formed in the mounting frame, and air holes which are used for being communicated with the outside are formed in the inner side wall of the driving groove.
Through adopting above-mentioned technical scheme, when the internal atmospheric pressure of fume chamber reinforcing, the push plate removes under the effect of atmospheric pressure, and the push plate removes and drives the gassing needle and remove, and the gassing needle inserts in the valve core to the gasbag gassing, and gas is discharged through the bleeder vent to make the stripper plate remove.
Preferably, the pushing block is slidably arranged in the mounting frame, a clamping groove for clamping the pushing block is formed in the moving plate, a guide rod is slidably arranged in the frame in a penetrating manner, the guide rod is fixedly connected with the pushing block, and a driving assembly for driving the guide rod to move is arranged in the mounting frame.
Through adopting above-mentioned technical scheme, operating personnel starts drive assembly, and drive assembly makes the guide bar remove, and the guide bar removes the impeller block and removes, and the impeller block removes and drives the movable plate and remove, and the movable plate removes and drives connecting rod and spacing ball and remove, and then releases the locking to the frame to make things convenient for operating personnel to use the fume chamber body at ordinary moment.
Preferably, a first cavity is formed in the mounting frame, a strip-shaped groove for sliding fit with the guide rod is formed in the inner side wall of the first cavity, the driving assembly comprises a driving rod rotatably mounted on the inner side wall of the first cavity and an elliptical wheel fixedly connected to the driving rod, the guide rod is located at the end part of the first cavity and fixedly connected with a connecting plate for being in butt joint with the elliptical wheel, and a knob is arranged on the driving rod.
Through adopting above-mentioned technical scheme, operating personnel rotates the knob, and the knob rotates and makes oval wheel rotate, and oval wheel rotates and makes the connecting plate remove, and the connecting plate removes and makes the guide bar remove, and the guide bar removes and makes the impeller block remove, and the impeller block removes and makes the movable plate remove, and the movable plate removes and makes connecting rod and spacing ball remove, finally releases the locking of frame, and first spring is in compression state this moment, and when operating personnel loosens the knob, the movable plate resets under the elasticity effect of first spring.
Preferably, the explosion-proof glass plate body comprises a glue layer and toughened glass arranged on two sides of the glue layer, and the toughened glass is fixedly bonded with the glue layer.
Through adopting above-mentioned technical scheme, double-deck toughened glass's the structural strength that is favorable to improving explosion-proof glass board body that is provided with of glue film is favorable to guaranteeing the integrality after the toughened glass breakage, prevents that toughened glass from splashing, and then improves the security of fume chamber.
The application provides a laboratory fume hood adopts following technical scheme:
preferably, the fume chamber body is last offered be used for with the installation frame slides complex mounting groove, this internal being provided with of fume chamber is used for fixing the installation component of installation frame, the installation component is including wearing to locate this internal two-way lead screw of fume chamber, threaded sleeve are located the slider at two ends of two-way lead screw, slip wear to locate this internal butt piece of fume chamber and articulated in articulated link on the slider, articulated link keep away from the tip of slider with the butt piece is articulated, the butt piece extends to in the mounting groove and with the installation frame butt, this internal being provided with of fume chamber is used for the drive the rotatory rotating assembly of two-way lead screw.
Through adopting above-mentioned technical scheme, operating personnel put into the mounting groove with the installing frame, and operating personnel starts rotating assembly, and rotating assembly makes two-way lead screw rotate, and two-way lead screw rotates and makes adjacent slider be close to each other, and the slider removes and drives articulated pole and remove, and articulated pole removes and makes butt piece and installing frame butt, and the cooperation of adjacent butt piece is favorable to fixed mounting frame, and the setting of installing assembly makes things convenient for operating personnel installation, dismantles the installing frame.
Preferably, the rotating assembly comprises a mounting rod penetrating through the ventilation cabinet body, a worm wheel fixedly sleeved on the mounting rod and a worm penetrating through the ventilation cabinet body, the worm is meshed with the worm wheel, a driving bevel gear is sleeved on the mounting rod, a driven bevel gear meshed with the driving bevel gear is sleeved on the bidirectional screw rod, and a hand wheel is fixedly connected to the worm.
Through adopting above-mentioned technical scheme, operating personnel rotates the hand wheel, and the hand wheel rotates and makes the worm rotate, and the worm rotates and makes the worm wheel rotate, and the worm wheel rotates and makes the installation pole rotate, and the installation pole rotates and makes the initiative bevel gear rotate, and the initiative bevel gear makes driven bevel gear rotate, and driven bevel gear finally makes two-way lead screw rotate.
Preferably, the baffle has been articulated on the fume chamber body, set up on the fume chamber body and be used for holding the constant head tank of baffle, fixedly connected with on the inside wall of constant head tank be used for with the third spring of baffle butt, wear to be equipped with the locating lever on the baffle, the locating lever passes the fume chamber body extends to in the installing frame, set up on the baffle be used for with locating lever sliding complex second guide way, the intercommunicating pore has been seted up on the inside wall of second guide way, fixedly connected with carriage release lever on the carriage release lever, the carriage release lever wear out the intercommunicating pore and with intercommunicating pore inside wall sliding complex.
Through adopting above-mentioned technical scheme, operating personnel rotates the baffle and makes the baffle remove to the constant head tank in, baffle and second spring butt, and the second spring is in compressed state this moment, and operating personnel utilizes movable rod drive locating lever to remove next, and the locating lever inserts in the installing frame, and the setting of locating lever makes things convenient for the position of operating personnel fixed baffle, and the setting of baffle is favorable to sheltering from explosion-proof glass board body to reduce the possibility that glass fragments splashed.
Preferably, the air bag is far away from the end joint of stripper plate has the power piece, the locating lever extends to in the first guide way and with the power piece butt, be provided with in the frame and be used for the reset the third piece that resets of power piece.
Through adopting above-mentioned technical scheme, when this internal atmospheric pressure of fume chamber reinforcing, the impeller board is gassing the gasbag through the gas releasing needle, and the locking of power piece is relieved, and the power piece rises under the effect of third restoring piece, and the power piece promotes the locating lever and rises, and when the locating lever carried out the second guide way completely in, the baffle overturns under the elasticity effect of second spring, and the setting of baffle can shelter from explosion-proof glass board body to reduce the possibility that glass piece splashes.
In summary, the present application includes at least one of the following beneficial technical effects:
1. when the explosion-proof glass plate body is in a closed state and explosive substances in the ventilation cabinet body explode, the pressure release assembly enables the movable plate to move, the movable plate moves to enable the connecting rod to move, the connecting rod moves to drive the limiting ball to be separated from the accommodating groove on the frame so as to release locking of the frame, the rotating rod rotates under the action of the torsion spring, the rotating rod rotates to drive the connecting block to move, the connecting block moves to enable the frame and the explosion-proof glass body to be opened, so that high-pressure gas is discharged, the explosion-proof glass plate body is prevented from being damaged by gas, nearby operators are protected, and the safety of the ventilation cabinet is further improved;
2. when the air pressure in the ventilation cabinet body is enhanced, the pushing plate moves under the action of the air pressure, the pushing plate moves to drive the air release needle to move, the air release needle is inserted into the valve core to release air of the air bag, and air is discharged through the air holes, so that the extrusion plate moves;
3. when the internal atmospheric pressure of fume chamber is strengthened, the impeller plate is through the gassing needle with the gasbag gassing, and the locking of power piece is released, and the power piece rises under the effect of third restoring piece, and the power piece promotes the locating lever and rises, and when the locating lever carried out the second guide way completely in, the baffle overturns under the elasticity effect of second spring, and the setting of baffle can shelter from explosion-proof glass board body to reduce the possibility that glass fragments splashed.
Drawings
Fig. 1 is a schematic structural diagram of a fume hood body according to an embodiment of the present application.
Fig. 2 is a schematic view of the internal structure of an explosion-proof glass panel body according to an embodiment of the present application.
Fig. 3 is a schematic view of the internal structure of the mounting frame of the embodiment of the present application.
Fig. 4 is an enlarged schematic view at a in fig. 3.
FIG. 5 is a schematic structural view of a deflation assembly according to embodiments of the present application.
Fig. 6 is a schematic view of the internal structure of the driving assembly according to the embodiment of the present application.
Fig. 7 is a schematic view of an internal structure of a fume hood body according to an embodiment of the present application.
Fig. 8 is an enlarged schematic view at B in fig. 7.
Reference numerals illustrate:
1. a fume hood body; 11. a mounting groove; 12. a second cavity; 13. a fixing groove; 15. a baffle; 151. a positioning rod; 152. a moving rod; 153. a second guide groove; 154. a communication hole; 16. a positioning groove; 161. a third spring; 17. a third reset member; 171. a third reset plate; 172. a sixth spring; 18. a third cavity; 2. a mounting frame; 21. a positioning block; 211. a rotating lever; 212. a torsion spring; 22. a fixing plate; 221. a clamping groove; 222. a first spring; 23. a first reset member; 231. a first reset plate; 232. a fourth spring; 24. a moving groove; 241. a first sliding groove; 25. a first guide groove; 251. a second sliding groove; 252. a third sliding groove; 26. a driving groove; 262. rectangular grooves; 27. a first cavity; 271. a bar-shaped groove; 272. a communication groove; 28. a guide rod; 281. a pushing block; 282. a connecting plate; 29. a power block; 3. a frame; 31. an explosion-proof glass plate body; 311. a glue layer; 312. tempered glass; 32. a connecting block; 33. a receiving groove; 4. a fixing assembly; 41. a moving plate; 411. a clamping groove; 42. a connecting rod; 43. a limit ball; 5. a pressure relief assembly; 51. an air bag; 511. a valve core; 52. an extrusion plate; 53. a second reset member; 531. a second reset plate; 532. a fifth spring; 6. a deflation assembly; 61. a pushing plate; 611. positioning columns; 612. a moving column; 613. a vertical groove; 614. a transverse slot; 615. a seventh spring; 62. an air release needle; 7. a drive assembly; 71. a driving rod; 72. an elliptical wheel; 73. a knob; 8. a mounting assembly; 81. a two-way screw rod; 811. a driven bevel gear; 82. a slide block; 83. an abutment block; 84. a hinge rod; 9. a rotating assembly; 91. a mounting rod; 911. a drive bevel gear; 92. a worm wheel; 93. a worm; 931. and a hand wheel.
Detailed Description
The present application is described in further detail below in conjunction with figures 1-8.
The embodiment of the application discloses an explosion-proof glass plate of laboratory fume hood. Referring to fig. 1, the explosion-proof glass plate of the laboratory fume hood includes a mounting frame 2, a rim 3, and an explosion-proof glass plate body 31 provided on a fume hood body 1.
Referring to fig. 2, the explosion-proof glass plate body 31 includes an adhesive layer 311 and tempered glass 312, the tempered glass 312 is provided with two, the two tempered glass 312 are fixedly connected through the adhesive layer 311, and the provision of the adhesive layer 311 is beneficial to ensuring the integrity of the tempered glass 312. The frame 3 is rectangular frame shape, and the frame 3 cover is located on the explosion-proof glass board body 31, and the inside wall of frame 3 and the lateral wall fixed connection of explosion-proof glass board body 31.
Referring to fig. 1 and 2, the mounting frame 2 has a rectangular frame shape, and the mounting frame 2 is vertically arranged. The upper end of the mounting frame 2 is fixedly connected with positioning blocks 21, two positioning blocks 21 are arranged, and the two positioning blocks 21 are arranged at intervals. The end part, close to the positioning block 21, of the frame 3 is fixedly connected with two connecting blocks 32, and the two connecting blocks 32 are in one-to-one correspondence with the two positioning blocks 21. A rotating rod 211 is horizontally arranged in the positioning block 21 in a penetrating mode, the rotating rod 211 is connected with the positioning block 21 in a rotating mode, the rotating rod 211 penetrates through the connecting block 32, and the rotating rod 211 is fixedly connected with the connecting block 32. The torsion spring 212 is sleeved on the rotating rod 211, one end of the torsion spring 212 is fixedly connected with the positioning block 21, the other end of the torsion spring 212 is fixedly connected with the connecting block 32, and the frame 3 and the explosion-proof glass plate body 31 are conveniently opened by the arrangement of the torsion spring 212.
Referring to fig. 3 and 4, a fixing component 4 for fixing the frame 3 is disposed in the mounting frame 2, two groups of fixing components 4 are disposed in the fixing component 4, one group of fixing components 4 is disposed on one side of the mounting frame 2, the other group of fixing components 4 is disposed on the other side of the mounting frame 2, and the single group of fixing components 4 includes a moving plate 41, a connecting rod 42 and a limiting ball 43. The inner side wall of the mounting frame 2 is provided with a moving groove 24, and the moving plate 41 is fixedly connected with the inner side wall of the moving groove 24. The side that movable plate 41 is close to frame 3 and connecting rod 42 fixed connection, the tip and spacing ball 43 fixed connection that movable plate 41 was kept away from to connecting rod 42 all offer the holding tank 33 that is used for holding spacing ball 43 on two lateral walls of frame 3, and spacing ball 43 is favorable to fixed frame 3 and explosion-proof glass board body 31 with the cooperation of holding tank 33.
Referring to fig. 3 and 4, two fixing plates 22 are provided in the mounting frame 2, and the fixing plates 22 are in one-to-one correspondence with the moving plates 41. The fixed plate 22 is in sliding fit with the inner side wall of the movable groove 24, a clamping groove 221 is formed in the side surface, close to the movable plate 41, of the fixed plate 22, and the movable plate 41 is in sliding fit with the inner side wall of the clamping groove 221. A first spring 222 is arranged between the movable plate 41 and the fixed plate 22, one end of the first spring 222 is fixedly connected with the movable plate 41, and the other end of the first spring 222 is fixedly connected with the inner end surface of the clamping groove 221. The fixing plate 22 is provided with a first restoring member 23, and the first restoring member 23 includes a first restoring plate 231 and a fourth spring 232. The inner top surface of the moving groove 24 is provided with a first sliding groove 241, one end of the first reset plate 231 is fixedly connected with the fixed plate 22, and the other end of the first reset plate 231 is in sliding fit with the first sliding groove 241. The fourth spring 232 is disposed in the first sliding groove 241, one end of the fourth spring 232 is fixedly connected with the first reset plate 231, and the other end of the fourth spring 232 is fixedly connected with the inner side wall of the first sliding groove 241.
Referring to fig. 3 and 4, two groups of pressure relief assemblies 5 are arranged in the mounting frame 2, the two groups of pressure relief assemblies 5 are in one-to-one correspondence with the two groups of fixing assemblies 4, and the single group of pressure relief assemblies 5 comprise an air bag 51 and an extrusion plate 52. The inner top surface of the movable groove 24 is provided with a first guide groove 25, the cross section of the first guide groove 25 is rectangular, and the first guide groove 25 is communicated with the outside. The air bag 51 is disposed in the middle of the first guide groove 25, and the air bag 51 is fixedly connected with the inner side wall of the first guide groove 25. The squeeze plate 52 is fixedly connected to the bottom surface of the air bag 51, and the squeeze plate 52 is slidably engaged with the inner side wall of the first guide groove 25. The end of the squeeze plate 52 far away from the air bag 51 is provided with an inclined surface, the end of the fixed plate 22 close to the squeeze plate 52 is provided with an inclined surface, and the inclined surfaces of the squeeze plate 52 and the fixed plate 22 close to each other are matched.
Referring to fig. 3 and 4, the pressing plate 52 is provided with a second reset member 53, the second reset member 53 includes a second reset plate 531 and a fifth spring 532, and the inner side wall of the first guide groove 25, which is close to the frame 3, is provided with a second sliding groove 251. The second reset plate 531 is fixedly connected with the pressing plate 52, and the second reset plate 531 is slidably matched with the inner side wall of the second sliding groove 251. The fifth spring 532 is fixedly connected to the second reset plate 531 at an end of the second sliding groove 251, and an end of the fifth spring 532 away from the second reset plate 531 is fixedly connected to an inner sidewall of the second sliding groove 251.
Referring to fig. 4 and 5, two sets of air release assemblies 6 are disposed in the mounting frame 2, the two sets of air release assemblies 6 are in one-to-one correspondence with the two sets of pressure release assemblies 5, and each set of air release assemblies 6 includes a pushing plate 61 and an air release needle 62. The mounting frame 2 is close to the drive groove 26 on the lateral wall of fume chamber body 1 cavity, and drive groove 26 is linked together with first guide slot 25, has seted up the bleeder vent on the inside wall of drive groove 26, and drive groove 26 is linked together with the external world through the bleeder vent. Two positioning columns 611 are arranged in the single pushing plate 61 in a penetrating way, the length directions of the two positioning columns 611 are coincident, a vertical groove 613 is formed in the pushing plate 61, and the positioning columns 611 are in sliding fit with the inner side walls of the vertical groove 613. Rectangular grooves 262 are formed in the inner top surface and the inner bottom surface of the driving groove 26, the rectangular grooves 262 are in one-to-one correspondence with the positioning columns 611, and the positioning columns 611 are in sliding fit with the inner side walls of the rectangular grooves 262. The inner side wall of the vertical groove 613 is provided with a transverse groove 614, the end parts of the adjacent positioning columns 611, which are close to each other, are fixedly connected with a moving column 612, the moving column 612 penetrates out of the transverse groove 614, and the moving column 612 is in sliding fit with the inner side wall of the transverse groove 614. A seventh spring 615 is fixedly connected between the adjacent moving columns 612, one end of the seventh spring 615 is fixedly connected with one moving column 612, and the other end of the seventh spring 615 is fixedly connected with the other moving column 612. The arrangement of the moving post 612, the positioning post 611, and the seventh spring 615 facilitates the installation of the push plate 61 by an operator.
Referring to fig. 4 and 5, the air release needle 62 is fixedly connected to the side of the push plate 61 near the air bag 51, and the air valve 511 is mounted to the side of the air bag 51 near the air release needle 62. When explosion occurs in the cavity of the fume hood body 1, the air pressure in the cavity of the fume hood body 1 is increased, the pushing plate 61 moves towards the air bag 51 due to the air pressure, and the pushing plate 61 drives the air release needle 62 to be inserted into the valve core 511, so that the air bag 51 is deflated. The first reset plate 231 drives the extrusion plate 52 to move upwards under the action of the fourth spring 232, the second reset plate 531 drives the fixing plate 22 to be inserted into the first guide groove 25 under the action of the fifth spring 532, the fixing plate 22 drives the moving plate 41 to move through the first spring 222, and the moving plate 41 moves to enable the connecting rod 42 and the limiting ball 43 to move, so that the limiting ball 43 is separated from the accommodating groove 33 of the frame 3. The connecting block 32 drives the frame 3 and the explosion-proof glass plate body 31 to open under the action of the torsion spring 212, so that gas in the cavity of the fume chamber body 1 is released, the explosion-proof glass plate body 31 is prevented from being broken, and the safety of the fume chamber body 1 is improved.
Referring to fig. 4 and 6, a first cavity 27 is formed in the bottom of the mounting frame 2, and two opposite inner side walls of the first cavity 27 are respectively provided with a bar-shaped groove 271, the length direction of the bar-shaped groove 271 is identical to the length direction of the mounting frame 2, and the bar-shaped groove 271 is communicated with the movable groove 24 through a communicating groove 272. Two guide rods 28 are arranged in the mounting frame 2, the guide rods 28 are in one-to-one correspondence with the strip-shaped grooves 271, and the guide rods 28 are in sliding fit with the inner side walls of the strip-shaped grooves 271. One end of the guide rod 28 extends into the first cavity 27, the other end of the guide rod 28 is fixedly connected with a pushing block 281, the pushing block 281 is located in the communication groove 272, and a clamping groove 411 for clamping with the pushing block 281 is formed in the bottom surface of the moving plate 41.
Referring to fig. 4 and 6, a driving assembly 7 is disposed in the mounting frame 2, the driving assembly 7 includes a driving rod 71 and an elliptical wheel 72, the driving rod 71 is disposed on the mounting frame 2 in a penetrating manner, one end of the driving rod 71 extends into the first cavity 27 and is rotationally connected with the inner side wall of the first cavity 27, and the other end of the driving rod 71 is fixedly connected with a knob 73. The elliptical wheel 72 is sleeved on the end part of the driving rod 71 positioned in the first cavity 27, and the elliptical wheel 72 is fixedly connected with the driving rod 71. The guide rod 28 is fixedly connected with a connecting plate 282 at the end part of the first cavity 27, and the end part of the connecting plate 282 far away from the guide rod 28 is abutted against the elliptical wheel 72.
Referring to fig. 4 and 6, when the operator closes the frame 3 and the explosion-proof glass plate body 31, the frame 3 presses the limit ball 43, and the frame 3 makes the limit ball 43 enter the moving groove 24, and at this time, the first spring 222 is in a compressed state. When the limiting ball 43 faces the accommodating groove 33, the moving plate 41 pushes the limiting ball 43 to be accommodated in the accommodating groove 33 under the action of the first spring 222, so that the frame 3 is locked. When the operator normally uses the fume chamber body 1, the operator rotates the knob 73, the knob 73 rotates to drive the elliptical wheel 72 to rotate, the elliptical wheel 72 rotates to drive the connecting plate 282 to move, the connecting plate 282 moves to drive the guide rod 28 to move, the guide rod 28 moves to enable the pushing block 281 to move, the pushing block 281 moves to enable the moving plate 41 to move, the moving plate 41 moves to enable the connecting rod 42 and the limiting ball 43 to move, and therefore locking of the frame 3 is released, and at the moment, the first spring 222 is in a compressed state. When the operator stops turning the knob 73, the moving plate 41 is restored by the elastic force of the first spring 222, so that the push block 281 and the guide lever 28 are restored.
The embodiment of the application also discloses a laboratory fume hood. Referring to fig. 7, the laboratory fume hood includes a fume hood body 1, a mounting groove 11 is provided on the fume hood body 1, an opening of the mounting groove 11 is rectangular, and an outer side wall of the mounting frame 2 is slidably matched with an inner side wall of the mounting frame 2.
Referring to fig. 7 and 8, a mounting assembly 8 for fixing the mounting frame 2 is provided in the fume hood body 1, and the mounting assembly 8 includes a bidirectional screw rod 81, a slider 82, an abutment block 83, and a hinge rod 84. The fume chamber body 1 is internally provided with second cavities 12, the length direction of each second cavity 12 is consistent with the length direction of each mounting groove 11, two second cavities 12 are arranged, one second cavity 12 is positioned above each mounting groove 11, and the other second cavity 12 is positioned below each mounting groove 11. The two-way screw rods 81 are arranged, the two-way screw rods 81 are in one-to-one correspondence with the two second cavities 12, the length direction of the two-way screw rods 81 is consistent with the length direction of the second cavities 12, and the two-way screw rods 81 are rotationally connected with the inner end surfaces of the second cavities 12. The two sliding blocks 82 on each bidirectional screw rod 81 are arranged, and the two sliding blocks 82 are respectively positioned at two ends of the bidirectional screw rod 81. The abutting blocks 83 are in a right angle shape, the inner side walls of the abutting blocks 83 are abutted against the mounting frame 2, the abutting blocks 83 are provided with four, and the four abutting blocks 83 are in one-to-one correspondence with four corners of the mounting frame 2. The four corners of the mounting groove 11 are provided with fixing grooves 13 for accommodating the abutting blocks 83, and the fixing grooves 13 are communicated with the mounting cavity. The hinge rods 84 are provided with four, the hinge rods 84 are in one-to-one correspondence with the sliding blocks 82, one end of each hinge rod 84 is hinged to each sliding block 82, and the other end of each hinge rod 84 is hinged to the adjacent abutting block 83.
Referring to fig. 7 and 8, a rotation unit 9 for driving the bidirectional screw rod 81 to rotate is provided in the mounting frame 2, and the rotation unit 9 includes a mounting rod 91, a worm wheel 92, and a worm 93. The third cavity 18 is formed in the mounting frame 2 along the length direction of the mounting frame, the length direction of the mounting rod 91 is consistent with the length direction of the third cavity 18, one end of the mounting rod 91 is rotationally connected with the inner top surface of the third cavity 18, and the other end of the mounting rod 91 is rotationally connected with the inner bottom surface of the third cavity 18. The drive bevel gear 911 is fixedly sleeved at both ends of the mounting rod 91, the end part of the bidirectional screw rod 81 close to the mounting rod 91 extends into the third cavity 18, the end part of the bidirectional screw rod 81 positioned in the third cavity 18 is fixedly sleeved with the driven bevel gear 811, and the drive bevel gear 911 and the driven bevel gear 811 are meshed with each other.
Referring to fig. 7 and 8, the worm gear 92 is fixedly sleeved at the middle part of the mounting rod 91, the worm 93 horizontally penetrates through the fume hood body 1, one end of the worm 93 extends into the third cavity 18 and is meshed with the worm gear 92, and a hand wheel 931 is fixedly connected to the end part of the worm 93, which is positioned outside the fume hood body 1. The operator rotates the hand wheel 931, and the hand wheel 931 rotates the mounting rod 91 through the cooperation of the worm 93 and the worm wheel 92, and the mounting rod 91 rotates the bi-directional screw rod 81 through the cooperation of the drive bevel gear 911 and the driven bevel gear 811, and the bi-directional screw rod 81 rotates to enable the adjacent sliding blocks 82 to be close to each other, and the sliding blocks 82 drive the hinging rods 84 and the abutting blocks 83 to move, and the abutting blocks 83 abut against the mounting frame 2 to lock the position of the mounting frame 2.
Referring to fig. 1 and 7, a baffle 15 is hinged on a fume hood body 1, a positioning groove 16 for accommodating the baffle 15 is arranged on the fume hood body 1, an opening of the positioning groove 16 is rectangular, and the positioning groove 16 is located above an installation groove 11. A third spring 161 is arranged on the inner side wall of the positioning groove 16, one end of the third spring 161 is fixedly connected with the inner side wall of the positioning groove 16, and the other end of the third spring 161 is abutted against the baffle 15.
Referring to fig. 1 and 3, a positioning rod 151 is inserted into the baffle 15, a second guide groove 153 is formed in the baffle 15, the positioning rod 151 is slidably matched with the second guide groove 153, and an end portion of the positioning rod 151, which is close to the mounting groove 11, passes through the fume hood body 1 and extends into the first guide groove 25. The end part of the positioning rod 151 far away from the mounting groove 11 is fixedly connected with a moving rod 152, a communication hole 154 is formed in the inner side wall of the second guide groove 153, the moving rod 152 penetrates out of the baffle 15 through the communication hole 154, and the moving rod 152 is in sliding fit with the inner side wall of the communication hole 154. The arrangement of the moving rod 152 and the positioning rod 151 facilitates the operator to fix the position of the baffle 15, and the positioning groove 16 facilitates the accommodation of the baffle 15.
Referring to fig. 3 and 4, a power block 29 is provided in the mounting frame 2, the power block 29 is slidably engaged with the inner wall of the second guide groove 153, one end of the power block 29 is abutted against the positioning rod 151, and the other end of the power block 29 is engaged with the end portion of the air bag 51 away from the pressing plate 52. The third restoring member 17 is provided on the power block 29, and the third restoring member 17 includes a third restoring plate 171 and a sixth spring 172. A third sliding groove 252 is formed in the inner side wall of the first guide groove 25, a third reset plate 171 is fixedly connected to the side surface of the power block 29, which is close to the third sliding groove 252, and the third reset plate 171 is in sliding fit with the inner side wall of the third sliding groove 252. The sixth spring 172 is disposed in the third sliding groove 252, and one end of the sixth spring 172 is fixedly connected to the third return plate 171, and the other end of the sixth spring 172 is fixedly connected to the inner end surface of the third sliding groove 252. After the air release needle 62 is deflated for the air bag 51 through the valve core 511, the air bag 51 is in clamping connection with the power block 29, the third reset plate 171 enables the power block 29 to move under the action of the sixth spring 172, the power block 29 pushes the positioning rod 151 to ascend, locking of the baffle 15 is released, the baffle 15 is turned over under the action of the third spring 161, the baffle 15 shields the frame 3 and the explosion-proof glass plate body 31, the possibility that fragments splash after the explosion-proof glass plate is broken is reduced, and accordingly safety of the fume hood body 1 is improved.
The embodiment of the application provides an explosion-proof glass board of laboratory fume chamber and laboratory fume chamber's implementation principle does: when explosion-proof material in fume chamber body 1 explodes under explosion-proof glass board body 31 is in the closed condition, pressure release subassembly 5 makes movable plate 41 remove, movable plate 41 removes and makes connecting rod 42 remove, connecting rod 42 removes and drives spacing ball 43 and break away from holding tank 33 on frame 3, thereby release the locking of frame 3, the dwang 211 rotates under torsion spring 212's effect, dwang 211 rotates and drives connecting block 32 and remove, connecting block 32 removes and makes frame 3 and explosion-proof glass board body 31 open, thereby make high-pressure gas discharge, prevent that gas from destroying explosion-proof glass board body 31, be favorable to protecting nearby operating personnel, and then improve the security of fume chamber.
The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.
Claims (7)
1. The utility model provides an explosion-proof glass board of laboratory fume chamber, including install installing frame (2) on fume chamber body (1), set up in frame (3) on installing frame (2) and install in explosion-proof glass board body (31) in frame (3), its characterized in that: the frame (3) is fixedly connected with a connecting block (32), the mounting frame (2) is fixedly connected with a positioning block (21), the positioning block (21) is rotatably provided with a rotating rod (211), the rotating rod (211) penetrates through the connecting block (32) and is fixedly connected with the connecting block (32), the positioning block (21) is fixedly connected with a torsion spring (212), and the end part, far away from the positioning block (21), of the torsion spring (212) is fixedly connected with the connecting block (32); the mounting frame (2) is internally provided with a fixing component (4) for fixing the frame (3), the fixing component (4) comprises a moving plate (41) which is arranged in the mounting frame (2) in a sliding penetrating mode, a connecting rod (42) fixedly connected to the moving plate (41) and a limiting ball (43) fixedly connected to the connecting rod (42), the frame (3) is provided with a containing groove (33) for containing the limiting ball (43), and the mounting frame (2) is provided with a pressure relief component (5) for moving the moving plate (41);
a moving groove (24) for sliding fit with the moving plate (41) is formed in the frame (3), a fixed plate (22) is arranged on the inner side wall of the moving groove (24) in a sliding mode, a clamping groove (221) for sliding fit with the moving plate (41) is formed in the fixed plate (22), a first spring (222) is fixedly connected to the moving plate (41), and the end portion, away from the moving plate (41), of the first spring (222) is fixedly connected with the inner side wall of the clamping groove (221); the air bag type air compressor is characterized in that a first guide groove (25) used for being communicated with the moving groove (24) is formed in the frame (3), the pressure release assembly (5) comprises an air bag (51) fixedly connected to the inner side wall of the first guide groove (25) and an extrusion plate (52) arranged on the air bag (51), the extrusion plate (52) is in sliding fit with the inner side wall of the first guide groove (25), inclined planes are formed at the end parts, close to each other, of the extrusion plate (52) and the fixing plate (22), the extrusion plate (52) is matched with the inclined planes of the fixing plate (22), a first reset piece (23) used for resetting the fixing plate (22) is arranged in the frame (3), a second reset piece (53) used for resetting the extrusion plate (52) is arranged in the frame (3), and a deflation assembly (6) used for deflating the air bag (51) is arranged in the installation frame (2).
The air discharging assembly (6) comprises a pushing plate (61) penetrating through the frame (3) in a sliding manner and an air discharging needle (62) fixedly connected to the pushing plate (61), a valve core (511) is arranged on the side surface, close to the air discharging needle (62), of the air bag (51), a driving groove (26) used for being in sliding fit with the pushing plate (61) is formed in the mounting frame (2), and air holes used for being communicated with the outside are formed in the inner side wall of the driving groove (26);
the movable frame is characterized in that a pushing block (281) is arranged in the mounting frame (2) in a sliding mode, a clamping groove (411) used for being clamped with the pushing block (281) is formed in the movable plate (41), a guide rod (28) is arranged in the frame (3) in a sliding mode, the guide rod (28) is fixedly connected with the pushing block (281), and a driving assembly (7) used for driving the guide rod (28) to move is arranged in the mounting frame (2).
2. An explosion proof glass panel for a laboratory fume hood as set forth in claim 1 wherein: first cavity (27) have been seted up in installing frame (2), set up on the inside wall of first cavity (27) be used for with guide bar (28) slip complex bar groove (271), drive assembly (7) including rotate install in actuating lever (71) on first cavity (27) inside wall and fixed connection in elliptical wheel (72) on actuating lever (71), guide bar (28) are located fixedly connected with on the tip of first cavity (27) be used for with connecting plate (282) of elliptical wheel (72) butt, be provided with knob (73) on actuating lever (71).
3. An explosion proof glass panel for a laboratory fume hood as set forth in claim 2 wherein: the explosion-proof glass plate body (31) comprises an adhesive layer (311) and toughened glass (312) arranged on two sides of the adhesive layer (311), and the toughened glass (312) is adhered and fixed with the adhesive layer (311).
4. A laboratory fume hood, based on the explosion-proof glass panel of claim 3, characterized in that: the utility model discloses a fume chamber, including fume chamber body (1), be provided with on fume chamber body (1) be used for with installing frame (2) slip complex mounting groove (11), be provided with in fume chamber body (1) be used for fixing install assembly (8) of frame (2), install assembly (8) including wear to locate bidirectional screw (81) in fume chamber body (1), threaded sleeve locate slider (82) at bidirectional screw (81) both ends, slip wear to locate butt piece (83) in fume chamber body (1) and articulated in articulated pole (84) on slider (82), articulated pole (84) keep away from the tip of slider (82) with butt piece (83) are articulated, butt piece (83) extend to in mounting groove (11) and with install frame (2) butt, be provided with in fume chamber body (1) be used for the drive rotatory rotating assembly (9) of bidirectional screw (81).
5. A laboratory fume hood according to claim 4, wherein: the utility model discloses a fume chamber, including ventilation cabinet body (1) including wearing to locate installation pole (91), fixed cover are located worm wheel (92) on installation pole (91) and wear to locate worm (93) in ventilation cabinet body (1), worm (93) with worm wheel (92) intermeshing, the cover is equipped with initiative bevel gear (911) on installation pole (91), the cover is equipped with on two-way lead screw (81) be used for with initiative bevel gear (911) intermeshing's driven bevel gear (811), fixedly connected with hand wheel (931) on worm (93).
6. A laboratory fume hood according to claim 4, wherein: the utility model discloses a fume chamber, including fume chamber body (1), baffle (15) are articulated on fume chamber body (1), set up on fume chamber body (1) be used for holding constant head tank (16) of baffle (15), fixedly connected with on the inside wall of constant head tank (16) be used for with third spring (161) of baffle (15) butt, wear to be equipped with locating lever (151) on baffle (15), locating lever (151) pass fume chamber body (1) and extend to in installing frame (2), set up on baffle (15) be used for with locating lever (151) slip complex second guide way (153), set up on the inside wall of second guide way (153) intercommunicating pore (154), fixedly connected with movable rod (152) on locating lever (151), movable rod (152) wear out intercommunicating pore (154) and with intercommunicating pore (154) inside wall cooperation.
7. A laboratory fume hood according to claim 6, wherein: the end joint that gasbag (51) kept away from stripper plate (52) has power piece (29), locating lever (151) extend to in first guide way (25) and with power piece (29) butt, be provided with in frame (3) and be used for the reset power piece (29) third reset piece (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210521376.1A CN114749454B (en) | 2022-05-13 | 2022-05-13 | Explosion-proof glass plate of laboratory fume chamber and laboratory fume chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210521376.1A CN114749454B (en) | 2022-05-13 | 2022-05-13 | Explosion-proof glass plate of laboratory fume chamber and laboratory fume chamber |
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| Publication Number | Publication Date |
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| CN114749454A CN114749454A (en) | 2022-07-15 |
| CN114749454B true CN114749454B (en) | 2024-01-09 |
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| CN202210521376.1A Active CN114749454B (en) | 2022-05-13 | 2022-05-13 | Explosion-proof glass plate of laboratory fume chamber and laboratory fume chamber |
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| CN114749454A (en) | 2022-07-15 |
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