CN116329226A - PP laboratory fume chamber - Google Patents
PP laboratory fume chamber Download PDFInfo
- Publication number
- CN116329226A CN116329226A CN202310624472.3A CN202310624472A CN116329226A CN 116329226 A CN116329226 A CN 116329226A CN 202310624472 A CN202310624472 A CN 202310624472A CN 116329226 A CN116329226 A CN 116329226A
- Authority
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- China
- Prior art keywords
- fixedly connected
- block
- dry powder
- cabinet body
- connecting pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000003517 fume Substances 0.000 title claims description 17
- 239000000843 powder Substances 0.000 claims abstract description 49
- 239000007921 spray Substances 0.000 claims description 48
- 238000007789 sealing Methods 0.000 claims description 23
- 230000006835 compression Effects 0.000 claims description 11
- 238000007906 compression Methods 0.000 claims description 11
- 239000007789 gas Substances 0.000 claims description 8
- 238000005507 spraying Methods 0.000 claims description 8
- 239000000428 dust Substances 0.000 claims description 5
- 239000004033 plastic Substances 0.000 claims description 5
- 229920003023 plastic Polymers 0.000 claims description 5
- 239000004743 Polypropylene Substances 0.000 abstract description 15
- 238000009423 ventilation Methods 0.000 abstract description 5
- -1 Polypropylene Polymers 0.000 abstract description 4
- 229920001155 polypropylene Polymers 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 2
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229920005992 thermoplastic resin Polymers 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000003670 easy-to-clean Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229920013639 polyalphaolefin Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
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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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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
- A62C31/02—Nozzles specially adapted for fire-extinguishing
- A62C31/03—Nozzles specially adapted for fire-extinguishing adjustable, e.g. from spray to jet or vice versa
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
- A62C31/28—Accessories for delivery devices, e.g. supports
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
Landscapes
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
The invention belongs to the technical field of PP (Polypropylene) ventilation cabinets, and discloses a PP laboratory ventilation cabinet. Through the cooperation of dry powder placing box, connecting block, extinguishing device, limiting device, first connecting pipe, fixed block and sprinkler, in carrying first connecting pipe with the dry powder through extinguishing device, carry out fire extinguishing treatment to the internal open fire of cabinet through first connecting pipe and sprinkler, guarantee operating personnel's security, prevent to take place the incident.
Description
Technical Field
The invention belongs to the technical field of PP (polypropylene) ventilation cabinets, and particularly relates to a PP laboratory ventilation cabinet.
Background
The PP is polypropylene, polypropylene is representative of poly-alpha-olefin, a thermoplastic resin prepared by propylene polymerization, and the monomer of the thermoplastic resin is propylene CH 2=CH-CH 3, is a lighter one of common plastics, has excellent electrical property, can be applied as a heat-resistant high-frequency insulating material, has good acid resistance, is easy to clean and oxidation resistant, has good surface smoothness, is mainly used in dust-free rooms with higher environmental requirements because of the excellent acid resistance of the PP material, can be used for higher-strength acid-base experiments compared with all-steel ventilated cabinets, is irreplaceable by all-steel ventilated cabinets, and can be applied to high-strength acid-base experiments and equal-high-end fields in clean rooms.
The patent application number 2022221952353 discloses a laboratory PP ventilation cabinet, which comprises a cabinet body and a storage box, wherein the front surface of the cabinet body is provided with a dust-proof plate, the top end of the interior of the cabinet body is provided with a gas collecting cover, the bottom of the gas collecting cover is provided with a slat, the middle part of the cabinet body is provided with a first workbench, the bottom of the first workbench is provided with a second workbench, the bottom surface of the second workbench is provided with the storage box, the front surface of the storage box is provided with a box door through hinged connection, and the front surface of the box door is fixedly provided with a handle; through the inside second workstation that sets up of PP fume chamber, through the cooperation of cross slot and cutting, avoid the experimenter to take the inconvenient problem of experimental tool to enlarged experimenter's operating space, through the setting of dust guard, can be manual with dust guard downwardly moving, improved dustproof effect.
However, in the use process, when substances are heated in the fume hood or certain organic chemical reaction experiments are carried out, open fire is often easy to generate, fire sources are generated by igniting the inside of the fume hood to cause fire disaster, and the internal parts of the fume hood are damaged to cause safety accidents.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides the following technical scheme: the utility model provides a PP laboratory fume chamber, the intelligent cabinet temperature adjusting device comprises a cabinet body, the cabinet body openly is equipped with the dust guard, the gas collecting channel is installed on the inside top of the cabinet body, cabinet body middle part is equipped with first workstation, first workstation bottom is equipped with the second workstation, the second workstation bottom surface is equipped with the storage tank, the right side inner wall fixedly connected with siren of the cabinet body, the surface of the cabinet body is provided with the controller, the inside of storage tank is provided with extinguishing device, the both sides of gas collecting channel and the inner wall that is located the cabinet body all set up flutedly, the inner wall fixedly connected with dry powder of recess places the case, the bottom of dry powder places the case is provided with the connecting block, the inside of connecting block is provided with defining means, the bottom fixedly connected with first connecting pipe of connecting block, the bottom fixedly connected with fixed block of first connecting pipe, the outside and the top that is located the fixed block are provided with sprinkler.
As the preference of above-mentioned technical scheme, extinguishing device includes the dry powder fire extinguisher, and the dry powder fire extinguisher is located the inside of storage tank, and the pipeline has all been seted up to the both sides inner wall of storage tank and the inside that is located the cabinet body, and one side fixedly connected with second connecting pipe of dry powder fire extinguisher, pipeline and connecting pipe fixed connection are passed on the top of second connecting pipe.
As the preference of above-mentioned technical scheme, the discharge gate has been seted up to the bottom of dry powder placement box, and the through-hole has been seted up at the top of connecting block, and the through-hole runs through the connecting block, and the discharge gate is corresponding with the through-hole, and the removal chamber has all been seted up to the both sides of through-hole, and defining device is located the inside in removal chamber.
As the preference of above-mentioned technical scheme, limit device includes the telescopic link, and the one end and the inner wall fixed connection in removal chamber of telescopic link, and its other end fixedly connected with sealing block, the surface fixedly connected with compression spring of telescopic link, one side fixedly connected with limiting plate of sealing block, one side surface fixedly connected with gag lever post of limiting plate, the one end fixedly connected with baffle of gag lever post.
As the preference of above-mentioned technical scheme, compression spring's one end and one side inner wall fixed connection of removal chamber, and its other end and the equal fixed connection of both sides of sealing block, the radius of sealing block is the same with the through-hole radius, and the upper and lower both ends and the through-hole laminating of sealing block.
As the preference of above-mentioned technical scheme, inject the board and be located the inside of connecting block, and its bottom and the bottom inner wall swing joint of removing the chamber, the baffle is located the right side of connecting block, and its right side outward appearance laminating with the connecting block, the material of baffle is pc plastics.
As the preference of above-mentioned technical scheme, sprinkler includes flexible pipe, and flexible pipe's one end and first connecting pipe fixed connection, and its other end fixedly connected with spray tube, the bottom fixedly connected with shower nozzle of spray tube, one side fixedly connected with reset spring of spray tube, one side fixedly connected with fixed plate of reset spring, the bottom of spray tube just is located the surface of first connecting pipe and is provided with adjusting device.
As the preference of above-mentioned technical scheme, the shower nozzle is located the bottom of fixed block, and the quantity of shower nozzle is four, and the removal groove has been seted up at the top of fixed block, and the surface and the inner wall swing joint in removal groove of spray tube.
As the preference of above-mentioned technical scheme, adjusting device includes electric putter, electric putter's top fixedly connected with installation piece, and the installation piece is connected with the surface fixed of first connecting pipe, and electric putter's bottom articulates there is the connecting rod, and the one end of connecting rod articulates with the top of spray tube.
The beneficial effects of the invention are as follows:
1. through the cooperation of dry powder placing box, the connecting block, extinguishing device, limiting device, first connecting pipe, fixed block and sprinkler, carry the dry powder to first connecting pipe through extinguishing device in, reuse sprinkler is put out a fire to the internal portion of cabinet, when the internal portion of cabinet is in the outage state, make limiting device no longer inject dry powder placing box and first connecting pipe with the internal high temperature of cabinet, thereby dry powder placing box in dry powder carries out fire extinguishing treatment through first connecting pipe and sprinkler to the internal open fire of cabinet, guarantee operating personnel's security, prevent the incident.
2. Through first connecting pipe, sprinkler and adjusting device cooperation, when putting out a fire to the internal portion of cabinet, utilize adjusting device to adjust the angle of shower nozzle in the sprinkler for dry powder is when carrying down the shower nozzle inside through first connecting pipe, through adjusting the range that the shower nozzle increase was put out a fire, is convenient for put out a fire fast.
Drawings
FIG. 1 shows a schematic overall structure of an embodiment of the present invention;
FIG. 2 shows a general internal structural view of an embodiment of the present invention;
FIG. 3 shows a block diagram of the interior of a cabinet according to an embodiment of the invention;
FIG. 4 shows a block diagram of a connection block of an embodiment of the present invention;
FIG. 5 shows an internal block diagram of a connection block of an embodiment of the present invention;
FIG. 6 shows a block diagram of a limiting device according to an embodiment of the invention;
fig. 7 shows a structural diagram of an adjusting device according to an embodiment of the present invention.
In the figure: 1. a cabinet body; 2. a dust-proof plate; 3. a first work table; 4. a storage box; 5. a groove; 6. a dry powder placing box; 7. a connecting block; 8. a limiting device; 81. a telescopic rod; 82. a sealing block; 83. a compression spring; 84. a limiting plate; 85. a limit rod; 86. a baffle; 9. a first connection pipe; 10. a fixed block; 11. a spraying device; 111. a telescopic tube; 112. a spray pipe; 113. a spray head; 114. a return spring; 115. an adjusting device; 1151. an electric push rod; 1152. a connecting rod; 12. a dry powder fire extinguisher; 13. a second connection pipe; 14. a through hole; 15. the cavity is moved.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the embodiments.
The invention provides a PP laboratory fume hood, as shown in figures 1-3, which comprises a hood body 1, wherein a dust-proof plate 2 is arranged on the front surface of the hood body 1, a gas collecting hood is arranged at the top end of the interior of the hood body 1, a first workbench 3 is arranged in the middle of the hood body 1, a second workbench is arranged at the bottom of the first workbench 3, a storage box 4 is arranged on the bottom surface of the second workbench, an alarm is fixedly connected to the inner wall of the right side of the hood body 1, a controller is arranged on the outer surface of the hood body 1, a fire extinguishing device is arranged in the storage box 4, grooves 5 are formed in both sides of the gas collecting hood and positioned on the inner wall of the hood body 1, a dry powder placing box 6 is fixedly connected to the inner wall of the grooves 5, a connecting block 7 is arranged at the bottom of the dry powder placing box 6, a limiting device 8 is arranged in the connecting block 7, a first connecting pipe 9 is fixedly connected to the bottom of the connecting block 7, a fixed block 10 is fixedly connected to the bottom of the first connecting pipe 9, and a spraying device 11 is arranged on the top of the fixed block 10.
When the fire disaster happens inside the cabinet body 1, the alarm gives an alarm, the dust guard 2 is pulled down, the inside of the cabinet body 1 is in a closed space, the fire extinguishing device in the storage box 4 is used for conveying dry powder into the first connecting pipe 9 through the controller, the fire extinguishing device 11 is used for extinguishing the fire inside the cabinet body 1, when the power supply is in an interruption state, the limiting device 8 is used for limiting the dry powder placing box 6 and the first connecting pipe 9 at a high temperature, the dry powder in the dry powder placing box 6 is sprayed with the dry powder through the spraying device 11 of the first connecting pipe 9 to extinguish the fire, serious safety accidents are prevented, and safety is guaranteed.
As shown in fig. 1-2, the fire extinguishing device comprises a dry powder fire extinguisher 12, the dry powder fire extinguisher 12 is positioned in the storage box 4, pipelines are respectively arranged on the inner walls of the two sides of the storage box 4 and positioned in the cabinet body 1, one side of the dry powder fire extinguisher 12 is fixedly connected with a second connecting pipe 13, and the top end of the second connecting pipe 13 passes through the pipelines and is fixedly connected with the first connecting pipe 9.
When fire disaster occurs in the cabinet body 1, an alarm is generated through the alarm, the dry powder extinguisher 12 is started through the controller, dry powder is conveyed to the inside of the first connecting pipe 9 through the second connecting pipe 13 by utilizing the dry powder extinguisher 12, and the dry powder passes through the spraying device 11 conveyed by the first connecting pipe 9, so that quick fire extinguishing is facilitated.
As shown in fig. 4-5, a discharging hole is formed in the bottom of the dry powder placing box 6, a through hole 14 is formed in the top of the connecting block 7, the through hole 14 penetrates through the connecting block 7, the discharging hole corresponds to the through hole 14, moving cavities 15 are formed in two sides of the through hole 14, and the limiting device 8 is located in the moving cavities 15.
Through the effect of limiting device 8, make the discharge gate that dry powder placed case 6 bottom and connecting block 7 top corresponding under the outage state, the dry powder of being convenient for falls into inside the first connecting pipe 9 through hole 14, and sprinkler 11 of being convenient for sprays, puts out a fire to cabinet body 1 inside.
As shown in fig. 4 and 6, the limiting device 8 includes a telescopic rod 81, one end of the telescopic rod 81 is fixedly connected with the inner wall of the moving cavity 15, the other end of the telescopic rod is fixedly connected with a sealing block 82, the outer surface of the telescopic rod 81 is fixedly connected with a compression spring 83, one side of the sealing block 82 is fixedly connected with a limiting plate 84, one side outer surface of the limiting plate 84 is fixedly connected with a limiting rod 85, one end of the limiting rod 85 is fixedly connected with a baffle 86, one end of the compression spring 83 is fixedly connected with one side inner wall of the moving cavity 15, the other end of the compression spring 83 is fixedly connected with both sides of the sealing block 82, the radius of the sealing block 82 is the same as the radius of the through hole 14, the upper end and the lower end of the sealing block 82 are attached to the through hole 14, the limiting plate 84 is located inside the connecting block 7, the bottom of the sealing block is movably connected with the bottom inner wall of the moving cavity 15, the baffle 86 is located on the right side of the connecting block 7, the right side of the connecting block 7 is attached to the right side of the connecting block 86, and the material of the baffle 86 is pcplastic.
When the inside outage of cabinet body 1, because the material of baffle 86 is pc plastics, when the inside temperature of cabinet body 1 risees gradually for baffle 86 melts, and then makes limiting plate 84 and gag lever post 85 lose the limit to sealing block 82, compression spring 83 stretches, telescopic link 81 stretches and promotes sealing block 82, makes sealing block 82 to the direction of keeping away from through-hole 14 remove, thereby make sealing block 82 no longer shutoff through-hole 14, make the dry powder inside the dry powder placing box 6 fall into through-hole 14 inside, and in the first connecting pipe 9, sprinkler 11 sprays of being convenient for.
As shown in fig. 7, the spraying device 11 includes an extension tube 111, one end of the extension tube 111 is fixedly connected with the first connecting tube 9, and the other end is fixedly connected with a spray tube 112, the bottom of the spray tube 112 is fixedly connected with a spray head 113, one side of the spray tube 112 is fixedly connected with a return spring 114, one side of the return spring 114 is fixedly connected with a fixing plate, the bottom of the spray tube 112 and the outer surface of the first connecting tube 9 are provided with an adjusting device 115, the spray head 113 is positioned at the bottom of the fixing block 10, the number of the spray heads 113 is four, the top of the fixing block 10 is provided with a moving groove, and the outer surface of the spray tube 112 is movably connected with the inner wall of the moving groove.
Dry powder is conveyed to the inside of the telescopic tube 111 through the first connecting tube 9, then is conveyed to the spray head 113 through the spray tube 112, dry powder is sprayed out through the spray head 113, when the angle of the spray head 113 needs to be adjusted, the spray tube 112 deflects through the adjusting device 115, the telescopic tube 111 contracts towards the direction of the first connecting tube 9, the reset spring 114 compresses, so that the spray head 113 deflects, and when the adjustment is not needed, the telescopic tube 111 drives the spray tube 112 to return to the original position under the action of the adjusting device 115 and the reset spring 114, so that the spray tube 112 returns to the original position.
As shown in fig. 7, the adjusting device 115 includes an electric push rod 1151, a mounting block is fixedly connected to the top of the electric push rod 1151, the mounting block is fixedly connected to the outer surface of the first connecting tube 9, a connecting rod 1152 is hinged to the bottom of the electric push rod 1151, and one end of the connecting rod 1152 is hinged to the top of the spray tube 112.
The electric push rod 1151 moves upwards to drive one end of the connecting rod 1152 to deflect upwards, and as the other end of the connecting rod 1152 is hinged with the spray pipe 112, one end of the connecting rod 1152 drives the other end to deflect when deflecting, so that the spray pipe 112 drives the spray head 113 to deflect, the spraying range of the spray head 113 is conveniently enlarged, and rapid fire extinguishing is facilitated.
Working principle: when the fire disaster occurs in the cabinet body 1, the alarm gives an alarm, the dustproof plate 2 is pulled down, the cabinet body 1 is in a closed space, the dry powder fire extinguisher 12 in the storage box 4 is started by the controller, dry powder is conveyed to the inside of the first connecting pipe 9 through the second connecting pipe 13, dry powder is conveyed to the inside of the spray pipe 112 through the telescopic pipe 111, dry powder is sprayed out of the cabinet body 1 through the spray nozzle 113, fire extinguishing treatment is carried out in the cabinet body 1, when the cabinet body 1 is powered off, the baffle 86 is melted due to the high temperature in the cabinet body 1 when the material of the baffle 86 is pc plastic, the limiting plate 84 and the limiting rod 85 are not limited any more, the telescopic rod 81 stretches under the action of the compression spring 83, the sealing block 82 is pushed to move away from the direction of the through hole 14, the sealing block 82 is not blocked by the through hole 14, dry powder in the dry powder placing box 6 is conveyed to the inside the spray pipe 112 through the first connecting pipe 9, and sprayed out of the spray nozzle 113, and fire extinguishing is carried out in the cabinet body 1.
When the fire inside the cabinet body 1 is large, the electric push rod 1151 moves upwards to drive one end of the connecting rod 1152 to deflect upwards, so that the spray pipe 112 at the other end of the connecting rod 1152 deflects, the spray head 113 deflects upwards, the spray head 113 sprays a large range of spray, and quick fire extinguishing is facilitated.
The above embodiments are only for illustrating the technical solution of the present invention, and are not limiting.
Claims (9)
1. A PP laboratory fume hood, comprising: cabinet body (1), cabinet body (1) openly is equipped with dust guard (2), the gas collecting channel is installed on the inside top of cabinet body (1), cabinet body (1) middle part is equipped with first workstation (3), first workstation (3) bottom is equipped with the second workstation, second workstation bottom surface is equipped with storage tank (4), its characterized in that, the right side inner wall fixedly connected with siren of cabinet body (1), the surface of cabinet body (1) is provided with the controller, the inside of storage tank (4) is provided with extinguishing device, recess (5) are all seted up to the both sides of gas collecting channel and the inner wall that is located cabinet body (1), the inner wall fixedly connected with dry powder of recess (5) places case (6), the bottom that case (6) were placed to dry powder is provided with connecting block (7), the inside of connecting block (7) is provided with defining means (8), the bottom fixedly connected with first connecting pipe (9), the bottom fixedly connected with fixed block (10) of first connecting pipe (9), the top (10) of connecting pipe (10) are located spraying device (11).
2. The PP laboratory fume hood according to claim 1, wherein the fire extinguishing device comprises a dry powder extinguisher (12), the dry powder extinguisher (12) is positioned in the storage box (4), pipelines are respectively arranged on the inner walls of the two sides of the storage box (4) and the inner walls of the storage box (4) positioned in the cabinet body (1), a second connecting pipe (13) is fixedly connected to one side of the dry powder extinguisher (12), and the top end of the second connecting pipe (13) passes through the pipelines and is fixedly connected with the first connecting pipe (9).
3. The PP laboratory fume chamber of claim 1, wherein a discharge port is formed in the bottom of the dry powder placement box (6), a through hole (14) is formed in the top of the connecting block (7), the through hole (14) penetrates through the connecting block (7), the discharge port corresponds to the through hole (14), movable cavities (15) are formed in two sides of the through hole (14), and the limiting device (8) is located in the movable cavities (15).
4. The PP laboratory fume chamber of claim 2, wherein the limiting device (8) comprises a telescopic rod (81), one end of the telescopic rod (81) is fixedly connected with the inner wall of the moving cavity (15), the other end of the telescopic rod is fixedly connected with a sealing block (82), the outer surface of the telescopic rod (81) is fixedly connected with a compression spring (83), one side of the sealing block (82) is fixedly connected with a limiting plate (84), one side outer surface of the limiting plate (84) is fixedly connected with a limiting rod (85), and one end of the limiting rod (85) is fixedly connected with a baffle plate (86).
5. The PP laboratory fume chamber of claim 4, wherein one end of the compression spring (83) is fixedly connected with the inside of the moving cavity (15), and the other end of the compression spring is fixedly connected with both sides of the sealing block (82), the radius of the sealing block (82) is the same as the radius of the through hole (14), and the upper and lower ends of the sealing block (82) are attached to the through hole (14).
6. The PP laboratory fume chamber of claim 4, characterized in that said limiting plate (84) is located inside the connecting block (7) and its bottom is movably connected to the bottom inner wall of the moving cavity (15), said baffle (86) is located on the right side of the connecting block (7) and it is externally attached to the right side of the connecting block (7), said baffle (86) is made of pc plastic.
7. The PP laboratory fume chamber of claim 1, wherein the spraying device (11) comprises a telescopic tube (111), one end of the telescopic tube (111) is fixedly connected with the first connecting tube (9), the other end of the telescopic tube is fixedly connected with a spray tube (112), the bottom of the spray tube (112) is fixedly connected with a spray head (113), one side of the spray tube (112) is fixedly connected with a return spring (114), one side of the return spring (114) is fixedly connected with a fixed plate, and the bottom of the spray tube (112) and the outer surface of the first connecting tube (9) are provided with an adjusting device (115).
8. The PP laboratory fume chamber of claim 7, wherein said spray heads (113) are located at the bottom of the fixed block (10), four spray heads (113) are provided, a moving groove is provided at the top of the fixed block (10), and the outer surface of said spray pipe (112) is movably connected with the inner wall of the moving groove.
9. The PP laboratory fume chamber of claim 7, wherein said adjustment device (115) comprises an electric push rod (1151), a top of said electric push rod (1151) is fixedly connected with a mounting block, said mounting block is fixedly connected with an outer surface of said first connecting pipe (9), a bottom of said electric push rod (1151) is hinged with a connecting rod (1152), and one end of said connecting rod (1152) is hinged with a top of said nozzle (112).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310624472.3A CN116329226A (en) | 2023-05-30 | 2023-05-30 | PP laboratory fume chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310624472.3A CN116329226A (en) | 2023-05-30 | 2023-05-30 | PP laboratory fume chamber |
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| Publication Number | Publication Date |
|---|---|
| CN116329226A true CN116329226A (en) | 2023-06-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310624472.3A Pending CN116329226A (en) | 2023-05-30 | 2023-05-30 | PP laboratory fume chamber |
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| CN (1) | CN116329226A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117225856A (en) * | 2023-11-13 | 2023-12-15 | 广州德扬实验室设备有限公司 | Fume hood for teaching |
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| CN117225856B (en) * | 2023-11-13 | 2024-04-02 | 广州德扬实验室设备有限公司 | Fume hood for teaching |
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Application publication date: 20230627 |