CN206726574U - A kind of dust explosion apparatus for demonstrating - Google Patents

Abstract

The utility model discloses a kind of dust explosion apparatus for demonstrating, including base, bottle, bottle stopper, power supply, there are outlet, air inlet pipe, igniter, dust container on the bottle stopper, the escape pipe is connected with blower fan and dust container, and the igniter is above dust container；The bottle stopper, blower fan are fixed on base, and the blower fan, igniter electrically connect with control module, and the control module is also associated with time block, button, and power supply is powered to whole system.Air inlet pipe and dust container connecting portion are further fixed on filter screen.The utility model design science, energy ocular demonstration dust explosion process, it is esy to use, safe and reliable, it is that one kind probes into class laboratory apparatus well.

Description

A kind of dust explosion apparatus for demonstrating

Technical field

A kind of laboratory apparatus is the utility model is related to, more particularly to a kind of experiment dress for being used to demonstrating and studying dust explosion Put.

Background technology

Dust explosion refers to that dust runs into thermal source in explosion limit, and flame is propagated rapidly, discharges substantial amounts of heat.Cause pole Big injury.We are not desired to because tragedy as dust explosion death represents.Seven class dust explosive：1. metal：Aluminium powder, zinc Powder, aluminum profile extrusion grounds travel, 2. synthetic materials：Plastics, dyestuff, the grain of intermediate 3. of organic synthesis medicine：Wheat flour, sugar, Milk powder, 4. agricultural byproducts：Cotton tea-leaf power, tobacco powder 5. are wooden：Wood chip, bakelite ash, tobacco powder, string dirt 6.. coal dust, 7. feeds：Fish meal.The condition of dust explosion：Dust will reach certain concentration, oxygen content will reach finite concentration, Reach certain temperature and point of origin.

In order to meet that student probes into the needs of science, it is necessary to develop a kind of dust explosion and safe and reliable of can showing Device, the harmfulness of dust explosion is conveniently demonstrated and probed into, understand the condition of dust explosion, in actual life preferably Avoid, and then ensure the safety of lives and properties.

The content of the invention

The purpose of this utility model is to provide a kind of dust explosion apparatus for demonstrating, to solve to propose in above-mentioned background technology The problem of.

To achieve the above object, the utility model provides a kind of following dust explosion apparatus for demonstrating of technical scheme, including bottom Seat, bottle, bottle stopper, power supply, there are escape pipe, air inlet pipe, igniter, dust container, the escape pipe and blower fan on the bottle stopper It is connected with dust container, the igniter is above dust container；The bottle stopper, blower fan are fixed on base, the blower fan, point Firearm is electrically connected with control module, and the control module is also associated with time block, button, and power supply is powered to whole system.Enter Tracheae and dust container connecting portion are further fixed on filter screen.

Preferably, the material of the bottle is polyvinyl chloride, polypropylene, polyethylene, and in experimentation, bottle can use ore deposit Spring bottle, carbonated drink bottle replace.

Preferably, the power supply is 12 volts of lead-acid accumulators.

Preferably, the control module uses single-chip microcomputer such as AT89C4051.

Preferably, the bottle stopper uses elastomeric material, cross sectional shape as isosceles trapezoid；Igniter uses pulse igniter, Filter screen uses stainless steel filtering net, and mesh number is 120-200 mesh.

Preferably, the base uses metal material, and the air inlet pipe, escape pipe use stainless steel tube or copper pipe, tube wall Thickness 0.5-1 millimeters, internal diameter 3-8 millimeters.

The utility model design science, can ocular demonstration dust explosion process, it is esy to use, safe and reliable, be it is a kind of very Good probes into class laboratory apparatus.

Brief description of the drawings

Fig. 1 is the utility model structure diagram；

Fig. 2 is the utility model bottle stopper part-structure schematic diagram；

Fig. 3 is utility model works principle schematic.

In figure：1- bottles, 2- escape pipes, 3- igniters, 4- dust containers, 5- bottle stoppers, 6- filter screens, 7- blower fans, 8- air inlets Pipe, 9- bases, 10- power supplys, 11- control modules, 12- time blocks.

Embodiment

Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made The every other embodiment obtained, belong to the scope of the utility model protection.

Refer to Fig. 1-3, the utility model provides a kind of dust explosion apparatus for demonstrating, including base 9, bottle 1, bottle stopper 5, Power supply 10, there are escape pipe 2, air inlet pipe 8, igniter 3, dust container 4, the escape pipe 2 and blower fan 7 and powder on the bottle stopper 5 Dirt container 4 is connected, and the igniter 3 is above dust container 4；The bottle stopper 5, blower fan 7 are fixed on base, the blower fan 7, Igniter 3 electrically connects with control module 11, and the control module 11 is also electrically connected with time block 12, button 13, and power supply 10 is given Whole system is powered.

Preferably, the material of bottle 1 is polyvinyl chloride, polypropylene, polyethylene, and in experimentation, bottle can use mineral spring Water bottle, carbonated drink bottle replace.

Preferably, the power supply 10 is 12 volts of lead-acid accumulators.

Preferably, the control module 11 is using single-chip microcomputer such as AT89C4051.

Preferably, the bottle plug 5 uses elastomeric material, cross sectional shape as isosceles trapezoid；Igniter 3 uses pulse firing Device.

Preferably, the air inlet pipe 8 and the connecting portion of dust container 4 are further fixed on filter screen 6, and filter screen 6 uses stainless steel filtering net, Mesh number is 120-200 mesh.

Preferably, the base 9 uses metal material, and the air inlet pipe 8, escape pipe 2 use stainless steel tube or copper pipe, pipe Wall thickness 0.5-1 millimeters, internal diameter 3-8 millimeters.

The utility model is put into outdoor open place during use, a certain amount of dust, such as starch are put into dust appearance In device 4, bottle 1 is covered, clicks button 13, the utility model is started working, when reaching the 12 default time of time block, Control module 11 connects blower fan 7 and igniter 3, blower fan 1 blow the starch in dust container 4 by air inlet pipe 8, and starch is full of The inner space of bottle 1, igniter 3 start igniting and release spark, and starch produces blast due to fully diffusing burning, blast production Raw gas can release from bottle mouth, and bottle 1 is because recoil effect can rush at sky, so as to observe the phenomenon of dust explosion, By time block 12, adjustment igniting and the opportunity for starting blower fan 7, the quantity of dust is put into by manually adjusting, can be to powder Condition caused by dust explosion carries out comparative study, draws the conclusion of science.

The effect of the filter screen 6 be prevent dust air inlet pipe 8 is fallen on when being put into the dust container 4 and impact effect；Institute Stating the effect of escape pipe 2 is, when blower fan 7, which starts air, to be entered by air inlet pipe 8 among bottle 1, keeps inside and outside bottle 1 Air pressure balance, so as to ensure that dust can diffuse space in whole bottle.

Although the utility model is described in detail with reference to the foregoing embodiments, come for those skilled in the art Say, it can still be modified to the technical scheme described in previous embodiment, or which part technical characteristic is carried out Equivalent substitution, it is all within the spirit and principles of the utility model, any modification, equivalent substitution and improvements made etc., it all should wrap It is contained within the scope of protection of the utility model.

Claims (7)

1. A kind of 1. dust explosion apparatus for demonstrating, it is characterised in that：Including base（9）, bottle（1）, bottle stopper（5）, power supply（10）, institute State bottle stopper（5）On have escape pipe（2）, air inlet pipe（8）, igniter（3）, dust container（4）, the escape pipe（2）With blower fan（7） And dust container（4）It is connected, the igniter（3）In dust container（4）Top；The bottle stopper（5）, blower fan（7）It is fixed on bottom On seat, the blower fan（7）, igniter（3）With control module（11）Electrical connection, the control module（11）Also it is electrically connected with timing Module（12）, button（13）.
2. A kind of 2. dust explosion apparatus for demonstrating as claimed in claim 1, it is characterised in that：Bottle（1）Material be polychlorostyrene second Alkene, polypropylene, polyethylene.
3. A kind of 3. dust explosion apparatus for demonstrating as claimed in claim 1, it is characterised in that：Power supply（10）For 12 volts of lead acid storage batteries Pond.
4. A kind of 4. dust explosion apparatus for demonstrating as claimed in claim 1, it is characterised in that：The bottle stopper（5）Using rubber material Material, cross sectional shape are isosceles trapezoid；The igniter（3）Using pulse igniter.
5. A kind of 5. dust explosion apparatus for demonstrating as claimed in claim 1, it is characterised in that：The air inlet pipe（8）Hold with dust Device（4）Connecting portion is further fixed on filter screen（6）.
6. A kind of 6. dust explosion apparatus for demonstrating as claimed in claim 5, it is characterised in that：Filter screen（6）Using stainless steel filtering net, Mesh number is 120-200 mesh.
7. A kind of 7. dust explosion apparatus for demonstrating as claimed in claim 1, it is characterised in that：The base（9）Using metal material Material；The air inlet pipe（8）, escape pipe（2）Using stainless steel tube or copper pipe, pipe thickness 0.5-1 millimeters, internal diameter 3-8 millimeters.