One falls sample head and fire door plug assembly thereof
Technical field
The present invention relates to element analysis technology field, particularly one falls sample head and fire door plug assembly thereof.
Background technology
Ultimate analysis is the various element existed in qualification material and the means measuring each constituent content, the elemental analyser majority existed in the market is automatic sample handling system, such as carry out the elemental analyser of coal analysis, in elemental analyser, comprise to fall sample head and the stove detection system with Luo Yangtou UNICOM.
The what is called sample head that falls is exactly drop into the device of stove detection system for sample to be tested, in the process of practical operation, sample is not directly enter into stove detection system, but first the gravity by self enter in sample head, sample is caught by the fire door plug fallen in sample head, then purges the admission passage of sample and sample, so that purge clean by the air be mixed in sample introduction process, and then fire door plug is opened, sample falls in stove detection system and carries out ultimate analysis.
The switch of the fire door plug in current elemental analyser is that the moving lever of cylinder or solenoid valve is connected with fire door plug, thus is realized opening of fire door plug by the action of cylinder or solenoid valve or closed by cylinder or solenoid valve as drive unit.
The source of the gas of cylinder is usually consistent with other pneumatic elements, adopt nitrogen as source of the gas, but nitrogen can produce larger impact for ultimate analysis, after cylinder repeatedly moves back and forth, its seal easily causes wearing and tearing, nitrogen is easy after being revealed by abration position to be entered in stove detection system by fire door, and this can cause the analysis result of sample element not accurate enough; And solenoid valve easily easy accelerated wear test under the environment that dust is more, produce fault.
Therefore, how can ensure that fire door plug works reliably, and can effectively avoid the drive unit of fire door plug to have an impact to testing result, be the technical matters that current those skilled in the art need solution badly.
Summary of the invention
An object of the present invention be to provide a kind of fall the fire door plug assembly of sample head, can ensure that fire door plug works reliably, and can effectively avoid fire door plug drive unit to have an impact to testing result.
Another object of the present invention is to provide a kind of sample head that falls with above-mentioned fire door plug assembly.
For solving the problems of the technologies described above, fire door plug assembly provided by the invention, in coal analysis instrument, comprising:
Be opened in the intrinsic slip cavity of sample head;
Be slidably disposed in the slide block in described slip cavity;
The movable chamber of the intrinsic fire door plug of the sample head that falls described in being opened in;
Be arranged in the movable chamber of described fire door plug, and be fixed on the fire door plug on described slide block, described fire door plug by oven door opening or can be closed under the drive of described slide block;
The first admission piece be communicated with described slip cavity one end;
The second admission piece be communicated with the other end of described slip cavity;
The source of the gas be communicated with described second admission piece with described first admission piece, and the gas stored in described source of the gas is oxygen or inert gas.
Preferably, described fire door plug is connected by set bar and described slide block.
Preferably, the described axis of slip cavity overlaps with the center line of slide block, and described slip cavity is blind chamber, and described slip cavity is away from one end of described fire door for installing described first admission piece, and this fire door plug assembly also comprises:
One end is communicated with the cecum of described slip cavity, and the other end is drawn out to the air inlet cavity of sample head body exterior, and described air inlet cavity is drawn out to one end of sample head body exterior for installing described second admission piece.
Preferably, also comprise one end and be connected with the cecum of described slip cavity, the middle connection chamber that the other end is connected with described air inlet cavity, and described air inlet cavity and described slip cavity be arranged in parallel.
Preferably, described middle connection chamber is vertical with described slip cavity with described air inlet cavity.
Preferably, described slip cavity is spacing section that the described slide block of restriction continues movement near the sections of described fire door, and spacing section of described middle connection chamber and described sliding cavity is connected.
Also disclose one in the present invention to fall sample head, this sample head that falls comprises fire door plug assembly, and described fire door plug assembly is fire door plug assembly disclosed in above-mentioned any one.
As can be seen from above technical scheme, fire door plug assembly disclosed in the present invention, falling, sample head body interior has offered slip cavity, and inside cavity of sliding has been embedded slidably slide block, fall in sample head body and be also provided with the movable chamber of fire door plug, fire door plug is arranged in the movable chamber of fire door plug, and be connected with slide block, fire door plug can realize opening of fire door or close under the drive of slide block, one end of sliding cavity is communicated with the first admission piece, the other end is communicated with the second admission piece, and the gas that the source of the gas be connected with the second admission piece with the first admission piece stores is oxygen or inert gas.
As can be seen here, the to-and-fro movement of slide block in slip inside cavity can be realized to the air blowing of slip inside cavity by the first admission piece and the second admission piece, driven the fire door plug be connected with it closed by fire door or open by the to-and-fro movement of slide block, the gas be simultaneously blown into by the first admission piece and the second admission piece will enter in stove detection system through the movable chamber of fire door plug, and the gas stored in the source of the gas be communicated with the second admission piece with the first admission piece is oxygen or inert gas, wherein oxygen is combustion-supporting gas required when analyzing ature of coal in coal analysis instrument, inert gas can not with the chemical reaction participating in burner hearth inside, this has just effectively stopped fire door plug drive unit and has impacted testing result while guarantee fire door plug reliably working.
The sample head that falls in the present invention is owing to having above-mentioned fire door plug assembly, and thus this sample head that falls has the corresponding advantage of above-mentioned fire door plug assembly concurrently, no longer repeats herein to this.
Accompanying drawing explanation
The vertical section structure schematic diagram of the fire door plug assembly of fall sample head of Fig. 1 for providing in the embodiment of the present invention;
The top perspective structural representation of the fire door plug assembly of fall sample head of Fig. 2 for providing in the embodiment of the present invention.
Wherein, 1 is the sample head body that falls, and 2 is slip cavity, and 3 is slide block, and 4 is the movable chamber of fire door plug, and 5 is fire door plug, and 6 is the first admission piece, and 7 is the second admission piece, and 8 is set bar, and 9 is air inlet cavity, and 10 is middle connection chamber, and 11 is plug, and 12 is spacing section.
Embodiment
One of core of the present invention be to provide a kind of fall the fire door plug assembly of sample head, can ensure that fire door plug works reliably, and can effectively avoid fire door plug drive unit to have an impact to testing result.
Another core of the present invention is to provide a kind of sample head that falls with above-mentioned fire door plug assembly.
In order to make those skilled in the art person understand the present invention program better, below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Please also refer to Fig. 1 and Fig. 2, the vertical section structure schematic diagram of the fire door plug assembly of fall sample head of Fig. 1 for providing in the embodiment of the present invention, the top perspective structural representation of the fire door plug assembly of fall sample head of Fig. 2 for providing in the embodiment of the present invention.
Provided by the present invention fall the fire door plug assembly of sample head, be mainly used in coal analysis instrument, this fire door plug assembly comprises slip cavity 2, slide block 3, the movable chamber 4 of fire door plug, fire door plug 5, first admission piece 6, second admission piece 7 and source of the gas, wherein slip cavity 2 and the movable chamber 4 of fire door plug are all opened on sample head body 1, it is inner that slide block 3 embeds slip cavity 2, and can reciprocatingly slide in slip cavity 2, fire door plug 5 is slidably disposed in the movable chamber 4 of fire door plug, and fire door plug 5 is connected on slide block 3, fire door plug 5 can realize closing by oven door opening or by fire door under the drive of slide block 3, first admission piece 6 is communicated with one end of slip cavity 2, second admission piece 7 is communicated with other one end of slip cavity 2, and the gas stored in the source of the gas be connected with the second admission piece 7 with the first admission piece 6 is oxygen or the inert gas not participating in reaction in furnace.
The reciprocal operation of slide block 3 in slip cavity 2 can be realized to the inner inflatable of slip cavity 2 by the first admission piece 6 and the second admission piece 7, side-to-side movement is specially in Fig. 1, please refer to Fig. 1 and Fig. 2, inflated in slip cavity 2 by the first admission piece 6, slide block 3 can be made to move right, and slide block 3 drives the fire door plug 5 be connected with it to move right and is closed by fire door; Inflated in slip cavity 2 by the second admission piece 7, slide block 3 can be made to left movement, slide block 3 drives the fire door plug 5 be connected with it to left movement and by oven door opening, makes sample drop in stove, and the fire door plug assembly of the sample head that falls disclosed in visible above-described embodiment achieves reliable work.
The gas be filled with by the first admission piece 6 and the second admission piece 7 will enter in stove detection system via the movable chamber 4 of fire door plug, and the gas stored in the source of the gas be communicated with the second admission piece 7 with the first admission piece 6 is oxygen or inert gas, wherein oxygen is combustion-supporting gas required when analyzing ature of coal in coal analysis instrument, inert gas can not with the chemical reaction participating in burner hearth inside, this has just effectively stopped fire door plug drive unit and has impacted testing result while guarantee fire door plug 5 reliably working, ensure that the reliability of coal analysis result.
As shown in fig. 1, fire door plug 5 and slide block 3 are connected by set bar 8, and concrete, set bar 8 one end is threaded with slide block 3, and the other end is embedded in groove that fire door plug 5 is offered.Certainly, can also offer groove on slide block 3, one end of set bar 8 is threaded with fire door plug 5, the other end is embedded in groove that slide block 3 is offered.
The conveniently connection of the second admission piece 7, in the fire door plug assembly of the sample head that falls disclosed in the present embodiment, the axis of slip cavity 2 overlaps with the center line of slide block, as shown in Figure 2, and the cavity 2 that slides is for blind chamber, so-called blind chamber and cavity and non-penetrating fall sample head body 1, the one end extending into the slip cavity 2 in sample head body 1 is called cecum, the cecum of slip cavity 2 does not pass sample head body 1, as shown in Figure 2, slip cavity 2, also comprises in this fire door plug assembly for installing the first admission piece 6 away from one end of fire door:
One end is communicated with the cecum of slip cavity 2, and the other end is drawn out to the air inlet cavity 9 of sample head body 1 outside, and air inlet cavity 9 is drawn out to one end of sample head body 1 outside for installing the second admission piece 7.
In order to avoid the leakage of gas, between the first admission piece 6 and slip cavity 2 and between the second admission piece 7 and air inlet cavity 9, be provided with the O RunddichtringO with sealing.
Further, the conveniently processing of each cavity and making, also comprise one end in the present embodiment to be connected with the cecum of slip cavity 2, the middle connection chamber 10 that the other end is connected with air inlet cavity 9, one end that middle connection chamber 10 leads to sample head body 1 outside is closed by plug 11, and as shown in Figure 2, and air inlet cavity 9 and slip cavity 2 be arranged in parallel, preferably, middle connection chamber 10 is arranged with air inlet cavity 9 is vertical with slip cavity 2.
The end sliding into cavity in order to avoid slide block 3 is difficult to inflation, also setting is optimized to slip cavity 2 in the present embodiment, concrete, slip cavity 2 is provided with for limiting spacing section 12 that slide block 3 continues movement near the part of fire door, and spacing section 12 of middle connection chamber 10 and slip cavity 2 is connected, as shown in Figure 2, this can effectively be avoided slide block 3 to move to the end of slip cavity 2, thus makes the second admission piece 7 can smoothly to the inner inflatable of slip cavity 2.
Additionally provide one in the embodiment of the present invention to fall sample head, in coal analysis instrument, this sample head that falls comprises fire door plug assembly, and fire door plug assembly is as above disclosed in any embodiment fire door plug assembly.
Owing to comprising above-mentioned fire door plug assembly in this sample head that falls, thus this sample head that falls has the attendant advantages of above-mentioned fire door plug assembly concurrently, no longer repeats in present specification to this.
Above to provided by the present invention fall sample head and fire door plug assembly thereof be described in detail.Apply specific case herein to set forth principle of the present invention and embodiment, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention, these improve and modify and also fall in the protection domain of the claims in the present invention.