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Method for manufacturing a multifunctional sampling gun assembly

发布日期:2020-01-07 13:12 Document serial number: 19641808 Release date: 2020-01-07 13:12
Method for manufacturing a multifunctional sampling gun assembly

The present invention relates to environmental monitoring sampling, and in particular to a multifunctional sampling device.



Background technique:

With the progress of the times, people pay more and more attention to the environment on which they depend. The emission of industrial smoke must be strictly in accordance with national emission standards. The content of various pollutants emitted by the flue gas is mainly referred to the flue gas analyzer. The automatic measurement of these pollutants, so the accuracy of the collected samples directly affects the accuracy of the detection, and then affects the normal operation of the exhaust emission system of the entire factory. The existing technology is not perfect.

The samples collected from the pollution source discharge pipeline (hereinafter referred to as the pipeline) are generally hydrochloric acid mist, fluoride, and sulfuric acid mist. The pollution source gas contains water and generally has particulate matter. The inner wall of the sampling tube of a general flue gas sampling gun is not very smooth. There will be adhesions, which have an adsorption effect on the collected pollutants. Therefore, three types of smoke guns are generally required for sampling, and the sampling needs to climb tens of meters of chimney. In order to reduce the labor burden of workers, combining three kinds of smoke guns into one type of smoke gun is one of the research directions of sampling devices.



Technical realization elements:

1. Technical problem to be solved

In view of the problems existing in the prior art, an object of the present invention is to provide a multifunctional sampling gun device, which can be applied to collect hydrochloric acid mist, sulfuric acid mist, and fluoride, which reduces the cost and labor.

2. Technical solutions

To solve the above problems, the present invention adopts the following technical solutions.

A multifunctional sampling gun device includes a sampling tube assembly, a filtering device, and an absorption bottle which are sequentially connected.

The sampling tube assembly is compressed in the protection tube by a front gland. The sampling tube assembly includes a filter cartridge assembly, a connecting tube, a rear plug, a sampling tube, a heating belt, a front plug, and a pitot tube. The filter cartridge assembly The sampling tube is fixedly arranged at the front end of the sampling tube, the sampling tube is fixedly arranged in the protective tube, the heating tape is wrapped around the sampling tube, the rear end of the sampling tube is fixedly connected to the filtering device, the rear end of the connecting tube is fixedly connected to the plug, and the front end of the connecting tube A front plug and a pitot tube are sequentially arranged, and the sampling tube and the connecting tube are arranged in parallel;

The filtering device includes a housing of the filtering device and a three-way interface, a one-way valve, a filter, and a soot and dust plate nozzle. The three-way interface and the one-way valve are fixedly arranged in the housing of the filtering device, and the filter is connected with the soot and dust plate nozzle. The three-way interfaces are respectively connected to the sampling tube, the check valve and the smoke and dust penetration nozzle, and the other end of the one-way valve is connected to the filter, and the filter and smoke are penetrated. The plate nozzle is connected to the absorption bottle through a silicone tube;

There are at least two groups of absorption bottles, and the absorption bottles are connected in series to the sampler host.

Further, the filter cartridge assembly includes a sampling nozzle, an elbow, an elbow holder, a pressure cap, a replaceable filter cartridge, a plug, a cartridge assembly housing, and an air outlet. The sampling nozzle is fixedly disposed at the elbow. The front end and the back end of the elbow are fixedly arranged in the housing of the filter cartridge assembly through a pipe elbow holder and pressed with a pressure cap. The plug assembly is sequentially provided with a plug communicating with the elbow and a replaceable filter cartridge and the filter cartridge assembly. The rear end of the casing is provided with an air outlet which is in communication with the replaceable filter cartridge.

Further, the possible replacement filter cartridge is a glass fiber filter cartridge or a tetrafluoroethylene filter cartridge, a glass fiber filter cartridge is used when collecting sulfuric acid mist or fluoride, and a tetrafluoroethylene filter cartridge is used when collecting hydrochloric acid mist.

Further, the absorption bottle is fixedly disposed in the refrigeration box.

Further, the absorption bottle is arranged at the lower part of the protection tube, which reduces the length of the pipeline.

Further, a triangle bracket is fixedly supported on the lower part of the protection tube.

Further, the triangular bracket is fixedly arranged between the absorption bottle and the filtering device.

3. Beneficial effect

Compared with the prior art, the advantages of the present invention are:

1. A heating belt is installed outside the sampling tube to heat the gas in the sampling tube to avoid adsorption in the tube due to water and gas in the tube;

2. The use of filters can better absorb the particulate matter in the flue gas and improve the purity of the flue gas collection;

3. After the flue gas is heated by the sampling tube, the flue gas temperature is high, and the absorption bottle is placed in the refrigeration box, which can better absorb the liquid to absorb the pollutants;

4. The use of replaceable filter cartridges and tee interfaces makes this device suitable for collecting hydrochloric acid mist, sulfuric acid mist, and fluoride, which reduces the cost and reduces labor.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic front structural view of a sampling tube assembly according to the present invention; FIG.

FIG. 3 is a schematic bottom view structure of FIG. 2; FIG.

4 is a schematic view of the left-view structure of FIG. 2;

FIG. 5 is a schematic structural diagram of a filter cartridge assembly according to the present invention.

detailed description

The following will combine the drawings in the embodiments of the present invention; a clear and complete description of the technical solutions in the embodiments of the present invention; obviously; the described embodiments are only a part of the embodiments of the invention; not all of the embodiments, based on The embodiments of the present invention; all other embodiments obtained by a person of ordinary skill in the art without creative labor; all fall within the protection scope of the present invention.

A multifunctional sampling gun device includes a sampling tube assembly 1, a filtering device 3, and an absorption bottle 2 connected in sequence.

The sampling tube assembly 1 is compressed in the protective tube 11 by a front-end gland 102. The sampling tube assembly 1 includes a filter cartridge assembly 13, a connecting tube 20, a rear plug 16, a sampling tube 15, a heating belt 17, and a front plug. 18. Pitot tube 19, the filter cartridge assembly 13 is fixedly disposed at the front end of the sampling tube 15, and a platinum resistance temperature sensor 200 is also fixedly arranged on the outside of the filter cartridge assembly 13 to facilitate monitoring of the flue gas temperature in the flue. The sampling tube 15 is fixedly disposed in the protection tube 11, the heating belt 16 is wrapped and wrapped around the sampling tube 15, the rear end of the sampling tube 15 is fixedly connected to the filter device 3, the rear end of the connecting tube 20 is fixedly connected to the plug 16, and the connecting tube 20 The front end is provided with a front plug 18 and a pitot tube 19 in order, and the sampling tube 15 and the connecting tube 20 are arranged in parallel.

The filtering device 3 includes a filtering device housing 31 and a three-way interface 32, a one-way valve 33, a filter 34, and a soot-piercing nozzle 35. The three-way interface 32 and the one-way valve 33 are fixedly disposed in the filtering device housing 31. The filter 34 and the soot-piercing nozzle 35 are respectively arranged on two side walls of the housing 31 of the filtering device, and the tee interface 32 is in communication with the sampling pipe 15, the check valve 33 and the soot-piercing nozzle 35 respectively. The other end of the check valve 33 is in communication with the filter 34. A tetrafluoroethylene filter membrane is provided in the filter 34, and the filter 34 and the smoke and dust penetration nozzle 35 are connected to the absorption bottle 2 through the silicone tube 36, respectively;

The absorption bottles 2 are at least two groups, the absorption bottles 2 are connected in series, and the absorption bottles 1 are connected to the sampler host 7.

The filter cartridge assembly 13 includes a sampling nozzle 131, an elbow 132, an elbow holder 133, a pressure cap 134, a replaceable filter cartridge 135, a plug 136, a filter assembly housing 137, and an air outlet 138. 131 is fixedly disposed at the front end of the elbow 132, and the rear end of the elbow 132 is fixedly disposed in the filter cartridge component housing 137 through the elbow holder 133 and pressed by the pressure cap 134. The filter cartridge component housing 137 is sequentially arranged with the elbow A plug 136 communicating with 132 and a replaceable filter cartridge 135 are provided, and a rear end of the filter cartridge assembly housing 137 is provided with an air outlet 138 communicating with the replaceable filter cartridge 135. The possible replacement filter cartridge 135 is a glass fiber filter cartridge or a tetrafluoroethylene filter cartridge. A glass fiber filter cartridge is used when collecting sulfuric acid mist or fluoride, and a tetrafluoroethylene filter cartridge is used when collecting hydrochloric acid mist.

The absorption bottle 2 is fixedly arranged in the refrigerating box 4, and the refrigerating box 4 is fixedly arranged in the lower part of the protection pipe 11, thereby reducing the length of the pipeline.

A triangular bracket 5 is also fixedly supported between the lower absorption bottle 2 of the protection tube 11 and the filtering device 3.

The gas path of this device when collecting three kinds of smoke is as follows:

Hydrochloric acid mist: The gas sampled at a constant velocity passes through the PTFE filter cartridge 135, passes through the sampling tube 15, and then passes through the three-way interface 32, and the flue gas passes through the check valve 33, passes through the tetrafluoroethylene filter membrane in the filter 34, and then passes through refrigeration The absorption bottle 2 in the box is pumped away by the small gas pump 6 to enter the sampler host 7; the granular hydrochloric acid mist is absorbed by the tetrafluoroethylene filter membrane, and the gaseous hydrochloric acid mist is absorbed by the absorption bottle 2.

Sulfuric acid mist or fluoride: Replace the Teflon filter cartridge with a glass fiber filter cartridge 135, and close the air outlet of the filter 34. The flue gas passes through the three-way interface 32, passes through the smoke through plate nozzle 35, and then passes through the refrigerator. The absorption bottle 2 is sucked away by the small gas pump 6 and enters the sampler main body 7. The solid particles are absorbed by the glass fiber filter cartridge, and the sulfuric acid mist and active fluoride are absorbed by the absorption bottle.

The above is only the preferred embodiment of the present invention; but the scope of protection of the present invention is not limited to this; any person skilled in the art is within the technical scope disclosed by the present invention; the technical solution according to the present invention And their improved ideas are equivalently replaced or changed; both should be covered within the protection scope of the present invention.

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