Carbon and sulfur analyzer and ash removal device of carbon and sulfur analyzer

Abstract

The utility model provides an ash removal device of a carbon and sulfur analyzer, and belongs to the technical field of ash removal devices. The device comprises a fixing device, a combustion tube, a crucible tray and an air purging inlet, the crucible tray is in sealed connection with the lower opening when rising to the lower opening of the fixing device, a combustion chamber is formed by a space defined by the crucible tray and the combustion pipe, and the carrier gas inlet is communicated with the combustion chamber; when the crucible tray descends to break away from the lower opening, the combustion chamber, the interior of the fixing device and the ash discharge outlet are communicated. The ash removal system is improved on the basis of an existing ash removal system of the carbon and sulfur analyzer, the combustion chamber is separated from the ash discharge cavity, dust attached to the ash discharge cavity cannot affect the combustion chamber, and the accuracy of data measured by the instrument is guaranteed. And the carrier gas inlet is directly communicated with the combustion chamber through the carrier gas pipeline, so that cross contamination with an ash discharge cavity, an ash discharge pipeline and the like is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to ash removal device technical field especially relates to a carbon sulfur analyzer ash removal device and contain the carbon sulfur analyzer of ash removal device. BACKGROUND

[0002] Carbon sulfur analyzer is specially used for analyzing carbon, sulfur element in sample scientific instrument. Generally make sample combustion in pure oxygen, carbon, sulfur element is converted into carbon dioxide and sulfur dioxide respectively, and is analyzed through infrared absorption method again. Combustion process is carried out in crucible or carrier such as porcelain boat, and the device of ignition has tube furnace, electric arc furnace, high frequency furnace and the like.

[0003] High frequency furnace produces a large amount of smoke and dust in the process of burning sample, these smoke and dust have influence on analysis result, have corrosive nature to the rear gas circuit or detector, and the instrument can filter the smoke and dust.

[0004] The dust produced after high frequency furnace combustion is cleaned mainly by the following methods:

[0005] (1) manual cleaning: using tool to clean, for some parts that are easy to contact, such as the outside of quartz combustion tube, small brush (such as test tube brush) can be used to gently brush the attached dust. In high frequency infrared carbon sulfur analyzer, when the dust accumulated on the tube wall is difficult to remove by automatic cleaning, the quartz combustion tube can be taken down and cleaned with a brush. A soft cloth or dust-free paper is dipped in an appropriate amount of cleaning liquid (such as ethanol, etc.), and the external surface of the instrument, the control panel and other parts are wiped to remove dust and stains. But attention should be paid to avoid the cleaning liquid entering the instrument interior to avoid damaging the electronic components.

[0006] (2) automatic cleaning: the instrument is equipped with a cleaning device, and some CS instruments are equipped with an automatic cleaning system. For example, some instruments are provided with a steel wire wheel brush at the furnace head, and after the "dust removal" key is pressed, the steel wire wheel brush will automatically descend to clean the quartz combustion tube to remove the dust and metal oxides and other impurities attached during the combustion process.

[0007] (3) high pressure gas purging: high pressure gas (such as compressed air or nitrogen) is used to purge the internal pipeline, gas circuit system and other parts of the instrument, and the dust and impurities are blown out. This method can effectively clean some narrow pipelines and corners, but attention should be paid to the pressure and flow of the gas to avoid damaging the instrument.

[0008] (4) ultrasonic cleaning: for some parts that can be taken off, such as filter screen, filter, etc., they can be taken off from the instrument first, and then put into the ultrasonic cleaning machine for cleaning. Distilled water and detergent are added in the cleaning tank, the ultrasonic cleaning machine is started, the parts are taken out after a period of time, and then cleaned repeatedly with distilled water, and finally cleaned with anhydrous ethanol and dried.

[0009] (5) Dust cleaning: Some high-end CS instruments may be equipped with small dust suction devices, which can suck the dust inside the instrument into the dust collection device through negative pressure, so as to achieve the purpose of cleaning. This method has good cleaning effect, but the cost of the instrument will also increase accordingly.

[0010] The existing dust removal system of the carbon-sulfur analyzer mainly consists of a steel wire brush, a lifting device, a dust suction device and a control system. The steel wire brush is a cleaning component, the lifting device is used to control the up-down movement of the steel wire brush, so that the brush can effectively sweep the combustion tube wall and the filter. Ensure that the dust and impurities can be accurately separated from the combustion tube and the filter. After cleaning, the control system is responsible for coordinating the work of the dust suction device and the lifting device. The dust cleaned will be discharged from the instrument through the dust discharge pipeline under the action of gravity or under the guidance of the instrument's own dust discharge airflow.

[0011] As shown in Figure 1 , when the instrument discharges dust, the combustion chamber 2 inside the fixed device 1 is connected with the dust discharge cavity 4 and the dust discharge pipeline 5. During the dust discharge process, dust will adhere to the dust discharge cavity 4 and the dust discharge pipeline 5. The opening and closing of the dust discharge pipeline 5 is controlled by the switch valve 6. The dust adhered to the dust discharge cavity 4 and the dust discharge pipeline 5 is rich in viscosity and is difficult to remove by the dust removal airflow. The instrument will still be affected.

[0012] As shown in Figure 2 , when the instrument burns the sample, the dust discharge pipeline 5 also serves as the carrier gas inlet (the carrier gas inlet is connected with the dust discharge pipeline 5 through the carrier gas pipeline 7), which blows the dust and impurities adhered to the dust discharge pipeline 5 and the dust discharge cavity 4 back to the combustion chamber 2, affecting the instrument data.

[0013] The dust generated by the sample burned by the carbon-sulfur analyzer has a certain viscosity and will adhere to all positions it contacts. The internal structure of the combustion chamber is complex, and there are some corners, curved pipelines or narrow gaps, etc. Neither the automatic cleaning device nor the airflow blowing device can completely remove the dust, resulting in the residual dust adhering to the combustion chamber, which affects the instrument data. Moreover, the existing dust discharge pipeline and the carrier gas pipeline where the carrier gas inlet is located are the same channel, causing cross contamination. Practical new type content

[0014] Therefore, in order to solve the technical problems that the dust cannot be completely removed and the dust discharge pipeline and the carrier gas pipeline are the same channel causing cross contamination in the prior art. In a first aspect, the utility model provides a carbon-sulfur analyzer dust removal device, which is improved on the basis of the existing carbon-sulfur analyzer dust removal system. The combustion chamber is separated from the dust discharge cavity, and the dust adhered to the dust discharge cavity will not affect the combustion chamber, ensuring the accuracy of the instrument measurement data. The carrier gas inlet is directly connected with the combustion chamber through the carrier gas pipeline, avoiding cross contamination with the dust discharge cavity, the dust discharge pipeline and the like.

[0015] To achieve the above object, the utility model provides the following technical scheme:

[0016] A carbon and sulfur analyzer ash removal device, comprising:

[0017] The fixed device is hollow inside, has an upper opening and a lower opening that are in communication with each other, and is provided with a carrier gas inlet and an ash outlet;

[0018] The combustion pipe is in sealing connection with the upper opening;

[0019] The crucible tray is located inside the fixed device and can be lifted inside the fixed device;

[0020] The air purge inlet is provided on the fixed device and is in communication with the inside of the fixed device, and is used for blowing dust out of the ash outlet;

[0021] When the crucible tray is lifted to the lower opening, the crucible tray is in sealing connection with the lower opening, the space surrounded by the crucible tray and the combustion pipe forms a combustion chamber, and the carrier gas inlet is in communication with the combustion chamber;

[0022] When the crucible tray is lowered and separated from the lower opening, the combustion chamber, the inside of the fixed device and the ash outlet are in communication.

[0023] Preferably, the air purge inlet is two, which are a first air purge inlet provided on the upper part of the fixed device and a second air purge inlet provided on the lower part of the fixed device.

[0024] Preferably, the first air purge inlet is provided in the combustion pipe.

[0025] Preferably, the crucible tray is further provided with an ash receiving disc.

[0026] Preferably, a sealing ring is arranged at the lower opening.

[0027] Preferably, the crucible tray is driven by an external air cylinder.

[0028] In the second aspect, the utility model provides a carbon and sulfur analyzer comprising the above-mentioned carbon and sulfur analyzer ash removal device.

[0029] Compared with the prior art, the utility model has the following beneficial effects:

[0030] The ash removal device of the carbon-sulfur analyzer provided by the utility model has the advantages that the ash removal device is improved on the basis of the existing ash removal system of the carbon-sulfur analyzer, the combustion chamber is separated from the ash removal cavity when the crucible tray is lifted, the dust attached in the ash removal cavity does not affect the combustion chamber, the accuracy of the measurement data of the instrument is ensured, the sample is combusted in the combustion chamber, the carrier gas inlet is communicated with the combustion chamber through the carrier gas pipeline, the carrier gas inlet is directly communicated with the combustion chamber through the carrier gas pipeline, and cross contamination with the ash removal cavity, the ash removal pipeline and the like is avoided. Oxygen is blown in through the carrier gas inlet to improve the combustion effect. When the crucible tray is lowered, the combustion chamber is communicated with the ash removal cavity, air is blown in through the air purge inlet, the dust in the combustion chamber, the ash removal cavity and the like is discharged through the ash removal outlet, and the ash removal effect is greatly improved.

[0031] In addition, the ash removal device of the carbon-sulfur analyzer has the advantages of simple operation and low maintenance cost. Since the crucible tray can be lifted through the external air cylinder, automatic control can be realized, the ash removal process does not need manual intervention, and the working intensity of the operator is greatly reduced. Meanwhile, due to the improvement of the ash removal efficiency, the risk of equipment damage caused by frequent manual ash removal is reduced, and the maintenance cost is reduced.

[0032] In summary, the ash removal device of the carbon-sulfur analyzer has remarkable advantages in improving the analysis accuracy, operation convenience, maintenance economy and safety. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 It is an ash removal state structural schematic view of the existing ash removal system of the carbon-sulfur analyzer;

[0034] Figure 2 It is a sample combustion state structural schematic view of the existing ash removal system of the carbon-sulfur analyzer;

[0035] Figure 3 It is a sample combustion state structural schematic view of the ash removal device of the carbon-sulfur analyzer provided by the utility model;

[0036] Figure 4 It is an ash removal state structural schematic view of the ash removal device of the carbon-sulfur analyzer provided by the utility model;

[0037] In the figure, 1, fixed device;2, combustion chamber;3, crucible tray;4, ash removal cavity;5, ash removal pipeline;6, switch valve;7, carrier gas pipeline;8, sealing ring;9, combustion pipe;10, carrier gas inlet;11, ash receiving disc;12, first air purge inlet;13, second air purge inlet;14, ash removal outlet. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model; obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all the embodiments, and all the other embodiments obtained by the ordinary skilled in the art without creative work based on the embodiments in the present utility model belong to the scope of protection of the present utility model.

[0039] In the description of the present utility model, it needs to be explained that the positions or location relations indicated by the terms "upper", "lower", "inner", "outer", "top / bottom end" and the like are the positions or location relations shown based on the drawings, which are only for the convenience of describing the present utility model and simplifying the description, and are not intended to indicate or imply that the indicated devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0040] In the description of the present utility model, it needs to be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "sleeved / connected", "connected" and the like should be understood broadly, for example, "connected" can be fixed connection, can also be detachable connection, or integrally connected; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication inside two elements. For the ordinary skilled in the art, the specific meaning of the above terms in the present utility model can be understood according to the specific circumstances.

[0041] As shown in Figures 3-4 The present utility model provides a carbon sulfur analyzer ash removal device, which is an improvement on the basis of the existing carbon sulfur analyzer ash removal system (such as Figures 1-2 As shown in the figure), the combustion chamber 2 is separated from the ash removal cavity 4 by using the crucible tray 3, and the carrier gas inlet 10 is directly communicated with the combustion chamber 2 through the carrier gas pipeline 7 without passing through the ash removal pipeline 5, so as to avoid the dust attached in the ash removal cavity 4 from entering the combustion chamber 2 to harden the accuracy of the measured data. The carbon sulfur analyzer ash removal device provided by the present utility model comprises:

[0042] The fixing device 1 is hollow inside, has an upper opening and a lower opening which are in communication with each other, and is provided with a carrier gas inlet 10 and an ash removal outlet 14 thereon.

[0043] The combustion pipe 9 is sealingly connected with the upper opening. The outer wall of the combustion pipe 9 is directly sealingly connected with the upper opening to form a static seal, so as to form the combustion chamber 2 in the space inside the combustion pipe 9.

[0044] Crucible tray 3 is located in the interior of the fixing device 1 and can be lifted in the interior of the fixing device 1. The crucible tray 3 is located in the interior of the fixing device 1 with a hollow cavity to provide a space for the lifting of the crucible tray 3. When the crucible tray 3 is lowered, the cavity between the crucible tray 3 and the fixing device 1 with a hollow cavity forms an ash discharge cavity 4, facilitating the flow of dust. A sealing ring 8 is arranged at the lower opening to seal the connection of the crucible tray 3 when the crucible tray 3 is raised, and the interior space of the combustion tube 9 together forms a combustion chamber 2.

[0045] The carrier gas inlet 10 is directly communicated with the combustion chamber 2 through the carrier gas pipeline 7, and the oxygen required for sample combustion is introduced through the carrier gas inlet 10, which does not cross-contaminate the ash discharge cavity 4, the ash discharge pipeline 5 and the like.

[0046] The air purge inlet is arranged on the fixing device 1 and communicated with the interior of the fixing device 1, and is used for blowing the dust out of the ash discharge outlet 14.

[0047] The crucible tray 3 is in sealing connection with the lower opening when the crucible tray 3 is raised to the lower opening, and the space surrounded by the crucible tray 3 and the combustion tube 9 forms a combustion chamber 2, and the carrier gas inlet 10 is communicated with the combustion chamber 2.

[0048] When the crucible tray 3 is lowered and separated from the lower opening, the combustion chamber 2, the interior of the fixing device 1 and the ash discharge outlet 14 are communicated. The gas is introduced through the air purge inlet, the airflow carries the dust through the ash discharge cavity 4 from the ash discharge outlet 14, and the outlet is connected to the negative pressure device (dust collector) to discharge the instrument. When the crucible tray 3 is raised, the combustion chamber 2 is closed, the combustion chamber 2 is cut off from the ash discharge cavity 4, and the dust adhered in the ash discharge cavity 4 does not affect the combustion chamber 2.

[0049] In the utility model, the air purge inlet is two, it is first air purge inlet 12 and second air purge inlet 13 that are arranged on the upper portion of the fixing device 1 and the lower portion of the fixing device 1 respectively. Figure 4 As shown in the figure, the first air purge inlet 12 can be selectively arranged in the lower portion of the fixing device 1 and communicated with the ash discharge cavity 4, and the second air purge inlet 13 can be preferably arranged in the combustion tube 9 and communicated with the combustion chamber 2. The gas is introduced through the first air purge inlet 12 and the second air purge inlet 13, the air purge inlet is communicated with the atmosphere, and the purging effect is ensured.

[0050] In the utility model, the ash receiving disc 11 is further arranged on the crucible tray 3.

[0051] In the utility model, the sealing ring 8 is arranged at the lower opening to seal the connection when the crucible tray 3 is raised, and forms part of the combustion chamber 2.

[0052] In the utility model, the crucible tray 3 is driven by the external cylinder.

[0053] When installing, the crucible tray 3 and the ash receiving tray 11 are installed together and are driven by the external cylinder. When the crucible tray 3 and the ash receiving tray 11 rise as a whole, the sealing ring 8 installed at the lower opening of the fixing device 1 can be contacted, so that the combustion tube 9 internal space and the crucible tray 3 jointly form the combustion chamber 2, and the carrier gas inlet 10 on the fixing device 1 can provide oxygen for sample combustion through the carrier gas pipeline 7.

[0054] When the sample is combusted, the crucible tray 3 and the ash receiving tray 11 rise to the position of the sealing ring 8, the combustion chamber 2 and the carrier gas inlet 10 and the crucible tray 3 form a combustion chamber 2 structure completely separated from the ash removal cavity, and sample combustion is carried out.

[0055] When the instrument removes ash, the crucible tray 3 and the ash receiving tray 11 descend to a specific position, the combustion chamber 2 and the internal space of the fixing device 1 and the ash removal outlet 14 form the ash removal cavity 4, the second air sweeping inlet 13 above drives the dust downward to the ash removal outlet 14, and the first air sweeping inlet 12 below forms an air flow upwardly lifting the dust, and the two jointly remove the dust from the ash removal outlet 14.

[0056] The utility model provides ash removal method of above -mentioned carbon sulfur analyzer ash removal device, based on above -mentioned content, it includes the following steps:

[0057] Step (1), the crucible tray 3 descends, and when separating from the lower opening, the combustion chamber 2, the internal space of the fixing device 1 and the ash removal outlet 14 are communicated to form the ash removal cavity 4;

[0058] Step (2), air is blown into through the air sweeping inlet (the first air sweeping inlet 12 and the second air sweeping inlet 13) to blow the dust in the combustion chamber 2 and the internal space of the fixing device 1 from the ash removal outlet 14.

[0059] The utility model provides a kind of carbon sulfur analyzer, including above-mentioned carbon sulfur analyzer ash removal device.The carbon sulfur analyzer of the utility model adopts the ash removal device of this, can guarantee the accuracy of data measurement, avoid the communication of carrier gas pipeline 7 and ash removal pipeline 5 in traditional ash removal system, so that dust enters combustion chamber 2 and affects the accuracy of measurement data.

[0060] The utility model provides the application of above-mentioned carbon sulfur analyzer ash removal device or carbon sulfur analyzer ash removal device ash removal method in carbon sulfur analyzer.By the ash removal device or ash removal method provided by the utility model is used in carbon sulfur analyzer, replace traditional carbon sulfur analyzer ash removal system, can greatly improve ash removal efficiency and guarantee the accuracy of data measurement.

[0061] The above merely is a preferred specific implementation manner of the present application; however, the protection scope of the present application is not limited thereto. Any person skilled in the art, within the technical range disclosed by the present application, according to the technical scheme and improvement concept of the present application, makes equivalent replacement or change, should be covered in the protection scope of the present application.

Claims

1. An ashing device for a carbon sulfur analyzer, comprising: The carbon-sulfur analyzer comprises: a fixing device, which is hollow inside, has an upper opening and a lower opening in communication with each other, and is provided with a carrier gas inlet and an ash outlet; a combustion tube, which is in sealing connection with the upper opening; a crucible tray, which is located inside the fixing device and can be lifted and lowered inside the fixing device; an air blowing inlet, which is provided on the fixing device and is in communication with the inside of the fixing device, and is used for blowing ash out of the ash outlet; when the crucible tray is lifted to the lower opening, the crucible tray is in sealing connection with the lower opening, a space surrounded by the crucible tray and the combustion tube forms a combustion chamber, and the carrier gas inlet is in communication with the combustion chamber; when the crucible tray is lowered and separated from the lower opening, the combustion chamber, the inside of the fixing device and the ash outlet are in communication.

2. The ash removal device of a carbon sulfur analyzer according to claim 1, characterized in that, The air blowing inlet is two, which is a first air blowing inlet provided on the upper part of the fixing device and a second air blowing inlet provided on the lower part of the fixing device.

3. A soot removal device for a carbon sulfur analyzer according to claim 2 wherein, The first air blowing inlet is provided in the combustion tube.

4. The ash removal device of a carbon sulfur analyzer according to claim 1, characterized in that, The crucible tray is further provided with an ash receiving tray.

5. The ash removal device of a carbon sulfur analyzer according to claim 1, characterized in that, The lower opening is provided with a sealing ring.

6. An ash removal device for a carbon sulphur analyser according to any one of claims 1 to 5, characterised in that, The crucible tray is driven by an external air cylinder.

7. A carbon sulfur analyzer characterized by comprising: The ash removal device of the carbon-sulfur analyzer comprises any one of claims 1-6. The ash removal device of the carbon-sulfur analyzer comprises any one of claims 1-6.

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