CN204556336U - Be applicable to the sampling thief of different dust concentration - Google Patents

Abstract

The utility model relates to a sampler suitable for different smoke and dust concentrations, which comprises a filter membrane sampling head, a filter cartridge sampling head, a bong rod assembly, a pitot tube, an air guide tube and a handle, and the filter membrane sampling head or filter cartridge sampling head The bottom of the bong is provided with an elastic slot, and the bong rod assembly includes a bong rod and a connecting rod arranged on the top of the bong rod, and the connecting rod is provided with a positioning pin and an O-ring, and through the positioning pin of the connecting rod and the With the cooperation of the above-mentioned elastic clamping groove, the filter membrane sampling head or the filter cartridge sampling head can be clamped on the bong rod assembly, and the filter membrane sampling head or the filter cartridge sampling head can also be removed.

Description

Samplers for different soot concentrations

technical field

The utility model relates to a smoke and dust sampler, in particular to a sampler suitable for different smoke and dust concentrations.

Background technique

In recent years, the problem of atmospheric environment has become more and more serious. The environmental protection monitoring department has strengthened the monitoring and management of stationary pollution sources, introduced more stringent pollutant discharge standards, and proposed the goal of ultra-clean emissions, requiring stationary sources to implement clean emission technologies. The total smoke and dust emission concentration is greatly reduced, and the emission outlet concentration is less than 5mg/m ³ . my country's stationary source soot emission test has always been based on "GB/T16157-1996", using glass fiber filter cartridges to measure the emission concentration of stationary source total soot, but this method has gradually become inapplicable to the current low and low soot emission concentration test. Because the emission concentration of soot is already below 20mg/m ³ , the mass of soot collected in half an hour of sampling time is 0.01g. The weight of the glass fiber itself is 1.5g, and the blank error is also 0.01g, so the total soot sampling method based on the filter cartridge is not suitable for measuring low-concentration soot at the discharge outlet.

At present, Wuhan Tianhong in China has proposed a filter-based low-concentration smoke sampling bong, but the design of the sampling bong cannot make the smoke evenly distributed on the filter membrane, so this product has not been promoted. In the actual dust test, it is often encountered that not only the dust with a very low concentration at the outlet of the dust removal equipment needs to be tested, but also the dust with a high concentration of dust at the inlet of the dust removal equipment needs to be tested. In addition, various parts of our country have different development and different environmental capacities, so the emission standards of smoke and dust are also different in different places. Some have high smoke and dust emission concentrations, while others have low emission concentrations. At present, most of the commercialized sampling bongs are bongs for measuring high-concentration smoke and dust alone, while Wuhan Texhong proposes a bong for measuring low-concentration smoke and dust alone. Therefore, two bongs are required for smoke emission testing in practice. It is very inconvenient to use.

Contents of the invention

In view of this, it is indeed necessary to provide a sampler suitable for different soot concentrations.

A sampler suitable for different soot concentrations, which includes a filter membrane sampling head, a filter cartridge sampling head, a bong rod assembly, a Pitot tube, an air guide tube and a handle, and the bottom of the filter membrane sampling head or the filter cartridge sampling head is provided with Elastic slot, the bong rod assembly includes a bong rod and a connecting rod arranged at the top of the bong rod, the connecting rod is provided with a positioning pin and an O-ring, through which the positioning pin of the connecting rod is connected to the elastic slot The cooperation of the filter membrane sampling head or the filter cartridge sampling head can be clamped on the bong rod assembly, and the filter membrane sampling head or filter cartridge sampling head can also be removed.

In some embodiments, the filter membrane sampling head comprises a constant velocity sampling nozzle, a gooseneck, a fastening nut, a filter membrane top cover, a pressure ring, a membrane holder and a filter membrane support, and the membrane holder is directly set Set on the filter membrane support body and suspended, the pressure ring is set on the surface of the membrane support, the filter membrane top cover is set on the pressure ring, the fastening nut is connected with the filter membrane support body through threads, and the The filter membrane top cover is fixed with the filter membrane carrier.

In some other embodiments, the filter membrane sampling head further includes a filter membrane, the filter membrane is arranged on the membrane holder, and the pressure ring is arranged on the surface of the filter membrane.

In some other embodiments, the bottom of the filter membrane carrier is provided with an elastic slot.

In some other embodiments, the gooseneck is an S-shaped structure with an inner diameter greater than or equal to 12mm and a length less than 150mm.

In some other embodiments, the filter membrane top cover has an "eight" segment and a linear extension segment, and the length of the linear extension segment is greater than 5 mm.

In some other embodiments, the sampling head of the filter cartridge comprises a constant velocity sampling nozzle, a filter tip, a gooseneck, a fastening nut, a filter cartridge top cover and a filter cartridge support body, and the filter cartridge top cover is arranged on The filter cartridge support body, the fastening nut is connected to the filter cartridge support body through threads, and the filter cartridge top cover is fixed to the filter cartridge support body.

In some other embodiments, the filter cartridge sampling head further includes a filter cartridge, and the filter cartridge is disposed in the filter cartridge holder.

In some other embodiments, the inlet of the filter cartridge support body is in an inverted "eight" shape, and the top cover of the filter cartridge is in an inverted "eight" shape.

In some other embodiments, the bottom of the filter cartridge support is provided with an elastic locking groove.

Compared with the prior art, the utility model provides a sampler suitable for different soot concentrations Solve the problem of the existing soot sampling device One sampling sampler The component is equipped with a fixed mode with a head, which can be used according to the soot concentration The sampling head makes the smoke and dust sampling more targeted, and at the same time plays a multi-purpose role as a sampler, suitable for sampling of various concentrations of smoke and dust, and is very convenient to use.

Description of drawings

Fig. 1 is a structural schematic diagram of a sampler suitable for different soot concentrations provided by the utility model.

Fig. 2 is a schematic cross-sectional view of a filter membrane sampling head in a sampler suitable for different soot concentrations provided by the utility model.

Fig. 3 is a schematic cross-sectional view of a filter cartridge sampling head in a sampler suitable for different soot concentrations provided by the utility model.

Fig. 4 is a structural schematic diagram of a connecting rod in a sampler suitable for different soot concentrations provided by the utility model.

Description of main component symbols

Membrane sampling head 10 Isokinetic sampling nozzle 11 Gooseneck 12 Membrane cap 13 fastening nut 14 O-ring 15 Membrane support 16 Filter support 17 Elastic card slot 18 Cartridge Sampling Head 20 Isokinetic sampling nozzle twenty one Gooseneck twenty two Cartridge top cover twenty three fastening nut twenty four O-ring 25 Cartridge body 27 Elastic card slot 28 bong rod assembly 30 bong stick 31 Connecting rod 32 groove 33 positioning pin 34 O-ring 35 pitot tube 40 Airway 50 handle 60

The following specific embodiments will further illustrate the utility model in conjunction with the above-mentioned accompanying drawings.

Detailed ways

The sampler suitable for different soot concentrations provided by the utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Please refer to Fig. 1, the embodiment of the utility model provides a sampler suitable for different soot concentrations. The sampler includes a filter membrane sampling head 10 , a filter cartridge sampling head 20 , a bong rod assembly 30 , a pitot tube 40 , an air duct 50 and a handle 60 .

Please also refer to Fig. 2, the filter membrane sampling head 10 is composed of a constant velocity sampling nozzle 11, a goose neck tube 12, a filter membrane top cover 13, a fastening nut 14, a pressure ring (not shown), a membrane holder 16, The filter membrane (not shown in the figure) and the filter membrane carrier 17 are composed. The membrane holder 16 is directly arranged on the filter membrane carrier 17 and suspended in the air, the filter membrane used for sampling is arranged on the membrane holder 16, the pressure ring is arranged on the surface of the filter membrane, and the filter membrane top cover 13 is arranged on the On the pressure ring, the fastening nut 14 is connected to the filter membrane support body 17 by threads, and an O-shaped sealing ring 15 is used to ensure air tightness, and the filter membrane top cover 13 is connected to the filter membrane support body 17 fixed together, so that the filter membrane is fixed on the membrane holder 16. The bottom of the filter membrane support body 17 is provided with an elastic clamping groove 18 . The isokinetic sampling nozzle 11 is threaded with a gooseneck 12, and the gooseneck 12 is directly threaded with the membrane top cover 13. The fastening nut 14 is threadedly connected to the filter membrane support body 17, which can ensure that the force acting on the filter membrane is evenly distributed.

The gooseneck 12 is an S-shaped structure with an inner diameter greater than or equal to 12 mm and a length less than 150 mm, so that the dust loss due to gravity settlement and inertial collision is minimized. The filter membrane top cover 13 has "eight" sections and a straight line extension section, the length of the straight line extension section is greater than 5mm, so that the smoke and dust are evenly distributed on the filter membrane. In this embodiment, the diameter of the membrane holder 16 and the pressure ring is 47 mm, so a filter membrane with a diameter of 47 mm can be used for sampling. Certainly, the diameters of the membrane support 16 and the pressure ring can also be other sizes, and the matching filter membranes can be used for sampling.

Please also refer to Fig. 3, the filter cartridge sampling head 20 is composed of a constant velocity sampling nozzle 21, a gooseneck 22, a filter cartridge top cover 23, a fastening nut 24, a filter cartridge (not shown) and a filter cartridge support body 27 compositions. The filter cartridge used for sampling is directly arranged in the filter cartridge support body 27, the filter cartridge top cover 23 compresses the filter cartridge from above, and the fastening nut 24 is connected with the filter cartridge support body 27 by threads, and the The filter cartridge top cover 23 is fixedly connected with the filter cartridge support body 27, and an O-ring 25 is used to ensure airtightness. The inlet of the filter cartridge support 27 is an inverted "eight" structure, the bottom of the filter cartridge support 27 is provided with an elastic slot 28, and the filter cartridge top cover 23 is also an "inverted "eight" structure. The inside of the filter cartridge support body 27 is U-shaped. The constant velocity sampling nozzle 21 is threaded to the gooseneck 22 , and the gooseneck 22 is threaded to the filter cartridge top cover 23 .

Please refer to FIG. 1 and FIG. 4 together. The bong rod assembly 30 includes a bong rod 31 and a connecting rod 32. A groove 33 is opened on the top of the connecting rod 32, and a positioning pin 34 is arranged below the groove 33. An O-ring 35 is disposed in the groove 33 . The connecting rod 32 is arranged on the top of the bong 31 , the pitot tube 40 is directly fixed on the bong 31 , and the air guide tube 50 is directly fixed on the bong 31 .

The filter membrane sampling head 10 can be connected with the bong 31 in a quick-plug manner, and an O-ring 15 is used to ensure airtightness. That is, the positioning pin 34 of the bong rod assembly 30 is inserted into the elastic locking groove 18 of the filter membrane support body 17 and fixed in the elastic locking groove 18 .

The filter cartridge sampling head 20 can be connected with the bong rod 31 in a quick-plug manner, and an O-ring 25 is used to ensure airtightness. That is, the positioning pin 34 of the bong rod assembly 30 is inserted into the elastic locking groove 28 at the bottom of the filter cartridge support body 27 and fixed in the elastic locking groove 28 .

For the specific sampling process of smoke and dust, please refer to "GB/T16157-1996". When sampling low-concentration smoke and dust, the filter membrane sampling head 10 is used. The positioning pin 34 on the filter 32 is connected with the elastic slot 18 at the bottom of the filter membrane sampling head 10 to securely fix the filter membrane sampling head 10 on the bong 31 .

Use filter cartridge sampling head 20 when high-concentration smoke sampling, filter cartridge sampling head 20 is connected to the connecting rod 32 on the top of bong rod 31 in the mode of fast inserting, and the positioning pin 34 on the connecting rod 32 and the bottom of filter cartridge sampling head 20 The elastic card slot 28 is connected to firmly fix the filter cartridge sampling head 20 on the bong rod 31 .

The connection rod in the sampler suitable for different soot concentrations provided by the embodiment of the utility model is provided with a positioning pin, and the bottom of the filter membrane sampling head is provided with an elastic card slot, and the bottom of the filter cartridge sampling head is provided with an elastic card slot. The cooperation of the positioning pin of the connecting rod and the elastic card slot can realize that the filter membrane sampling head or the filter cartridge sampling head can be conveniently clamped on the bong rod assembly, and the filter membrane sampling head or the filter cartridge sampling head can also be conveniently clamped. The sampling head of the filter cartridge is disassembled, which is easy to disassemble and use, and solves the problem of the existing smoke sampling device. Targeted, and at the same time play a multi-purpose role of a sampler, suitable for sampling of smoke and dust of various concentrations, very convenient to use.

In addition, those skilled in the art can also make other changes within the spirit of the utility model, and these changes made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims (10)

1. one kind is applicable to the sampling thief of different dust concentration, it comprises filter membrane sampling head, filter cylinder sampling head, opium pipe bar assembly, pitot tube, wireway and handle, the bottom of described filter membrane sampling head or filter cylinder sampling head is provided with elasticity draw-in groove, described opium pipe bar assembly comprises opium pipe bar and is arranged on the connecting link in this opium pipe masthead portion, this connecting link is provided with register pin and O RunddichtringO, by the register pin of described connecting link and coordinating of described elasticity draw-in groove, can realize described filter membrane sampling head or filter cylinder sampling head clamping at described opium pipe bar assembly, also filter membrane sampling head or filter cylinder sampling head can be realized to pull down.

2. be applicable to the sampling thief of different dust concentration as claimed in claim 1, it is characterized in that, described filter membrane sampling head comprises isokinetic sampling's mouth, goose neck pipe, fastening nut, filter membrane top cover, pressure ring, film holder and filter membrane and holds body composition, described film holder is set directly at filter membrane and holds body and unsettled setting, described pressure ring is arranged on film holder surface, described filter membrane top cover is arranged on pressure ring, and described fastening nut holds body by screw thread with described filter membrane and is connected, and described filter membrane top cover and described filter membrane is held body and fixes.

3. be applicable to the sampling thief of different dust concentration as claimed in claim 2, it is characterized in that, described filter membrane sampling head comprises filter membrane further, and this filter membrane is arranged on described film holder, and described pressure ring is arranged on filter membrane surface.

4. be applicable to the sampling thief of different dust concentration as claimed in claim 2, it is characterized in that, described filter membrane holds bottom body and is provided with elasticity draw-in groove.

5. be applicable to the sampling thief of different dust concentration as claimed in claim 2, it is characterized in that, described goose neck pipe is S type structure, and internal diameter is more than or equal to 12mm, and length is less than 150mm.

6. be applicable to the sampling thief of different dust concentration as claimed in claim 2, it is characterized in that, described filter membrane top cover has " eight " section and linear extension, and the length of this linear extension is greater than 5mm.

7. be applicable to the sampling thief of different dust concentration as claimed in claim 1, it is characterized in that, described filter cylinder sampling head comprises isokinetic sampling's mouth, filter tip, goose neck pipe, fastening nut, cartridge cover and filter cylinder and holds body composition, described cartridge cover is arranged on filter cylinder and holds body, described fastening nut holds body by screw thread and filter cylinder and is connected, and described cartridge cover and filter cylinder is held body and fixes.

8. be applicable to the sampling thief of different dust concentration as claimed in claim 7, it is characterized in that, described filter cylinder sampling head comprises filter cylinder further, and this filter cylinder is arranged on described filter cylinder and holds in body.

9. be applicable to the sampling thief of different dust concentration as claimed in claim 7, it is characterized in that, described filter cylinder holds body entrance for falling " eight " shape structure, and described cartridge cover is for falling " eight " shape structure.

10. be applicable to the sampling thief of different dust concentration as claimed in claim 9, it is characterized in that, the bottom that described filter cylinder holds body is provided with elasticity draw-in groove.