LU500480B1

LU500480B1 - Gaseous sample random sampling apparatus

Info

Publication number: LU500480B1
Application number: LU500480A
Authority: LU
Inventors: Jing Zhao; Wenxing Ding; Fan Zhang; Gang Wu; Chao Zhao
Original assignee: China Nat Inst Standardization
Priority date: 2020-03-05
Filing date: 2021-02-04
Publication date: 2021-12-23
Also published as: CN211576689U; WO2021139823A1

Abstract

A gaseous sample random sampling apparatus, comprising a protector (1), the protector (1) being cup-shaped, and comprising a bottom cylinder (2) and a sealing cover (3), the sealing cover (3) being capable of covering an upper opening of the bottom cylinder (2), a gaseous sample being arranged within a cavity of the bottom cylinder (2), a counterweight (4) being fixedly arranged on a bottom surface of the bottom cylinder (2); a mixing and sampling apparatus (5), the mixing and sampling apparatus (5) comprising a mixing tub (6), a support (7), a plug (8) and a collecting cylinder (9), the mixing tub (6) being arranged on the support (7), the bottom of the mixing tub (6) being funnel-shaped, the center of the bottom of the mixing tub (6) being provided with an outlet (10), the outlet (10) being a circle having a diameter larger than the diameter of the protector (1) and smaller than twice the diameter of the protector (1), the plug (8) being capable of plugging the outlet (10), an inlet of the collecting cylinder (9) being detachably mounted on the outlet (10), a side surface of the collecting cylinder (9) being provided with water outlet holes (12). The apparatus achieved the goal of random sampling, has a simple structure, and is convenient to use.

Description

BL-5276 LU500480

GASEOUS SAMPLE RANDOM SAMPLING APPARATUS BACKGROUND

FIELD OF INVENTION The present utility model involves the technical field of testing devices. Specifically, itis a random sampling device for gaseous samples (gaseous sample random sampling apparatus).

BACKGROUND ART The gaseous sample collection is the effective means of monitoring and controlling environmental quality. The collection of the gaseous samples is greatly affected by meteorological factors. There are many kinds of substances to be tested, which are low in content and vary greatly in concentration. With the overall consideration on the fluidity and mutability of gas, the data gap of the gaseous sample collected every time may relatively be large. Therefore, it’s required to collect enough quantity of samples for reducing the errors.

In practice, it’s still required to use the method of blind picking, to sample from these samples and randomly select some samples for the use of prophase research, but there is a lack of such kind of random sampling device in the prior art.

SUMMERY For this purpose, this utility model provides a random sampling device for gaseous samples to solve the problem of lacking a random sampling device on collecting gaseous samples in the prior art.

In order to achieve the aforesaid purpose, this utility model provides the following technical solution: According to this utility model, a random sampling device for gaseous samples is provided, which comprises: the protective gear and the mixed sampling appliance.

The said protective gear is cup-shaped, and comprises a bottom cylinder and a sealing cover. The said sealing cover can cover on the upper opening of the bottom cylinder. The gaseous sample is disposed inside of the chamber of the bottom cylinder. The bottom surface of the said bottom cylinder is fixedly set with a clump weight.

The said mixed sampling appliance comprises a mixing barrel, a supporting rack, a plugging block and a collecting cylinder. The said mixing barrel is set on the supporting rack. The bottom 1

BL-5276 of the said mixing barrel is funnel shaped, and an outlet is set at the center of the bottom of the said LUS00480 mixing barrel. This outlet is a circle whose diameter is larger than the diameter of protective gear, and the diameter of this outlet is less than twice the diameter of the protective gear. The said plugging block can block off this outlet. The inlet of the said collecting cylinder is detachably mounted on this outlet. The water outlet holes are set on the side surface of the said collecting cylinder.

Further, the inlet of the said collecting cylinder is detachably mounted on the outlet through a flange.

Further, a connecting rod is fixedly set on the top of the said plugging block.

Further, the lower opening of the said sealing cover is arranged with internal threads. The upper opening of the said bottom cylinder is arranged with external threads. The lower opening of the sealing cover and the upper opening of the bottom cylinder are connected by threaded connection.

Further, the number of the said water outlet holes is multiple and the said water outlet holes are arranged along the said collecting cylinder circumferentially and axially.

This utility model has following advantages.

On the one hand, the protective gear of the random sampling device for gaseous samples works for the purpose of protecting gaseous samples, and forms a fixed diameter on the other hand. The outlet of the mixing barrel is blocked off with the plugging block, and water is added into the mixing barrel. Then the protective gear contained with the gaseous sample is put into the water, and the protective gear gets the status of floating on the water. At this point, the protective gear equipped with clump weight ensures the protective gear is in the status of perpendicular to the water surface. Using the external stirring rod can have these protective gears fully mixed. After the stirring, the plugging block is pulled out. The protective gears flow downward with water. The diameter of the outlet of mixing barrel is larger than the diameter of protective gear but less than twice the diameter of protective gear, which avoids two protective gears entering into the outlet at the same time. The protective gears get inside of the collecting cylinder. The diameter of the collecting cylinder is slightly larger than the diameter of protective gear. The vertically down flowed protection gears are arranged in the collecting cylinder in turn. Finally, after demounting the collecting cylinder from the mixing barrel, according to the random decided numbers in advance, the protective gears with corresponding numbers are chose. The purpose of random sampling is achieved by using the gaseous samples contained in these protective gears as sampling samples.

BRIEF DESCRIPTION OF THE DRAWING 2

BL-5276 In order to explain the embodiment of this utility model or the technical solution in the prior LUs00480 art more clearly, the following will briefly introduce drawings used in the description of the embodiment or the prior art. Obviously, the drawings in the following description are merely exemplary. For those ordinary skilled in the art, on the premise of no creative work being done, other operation drawings can be further obtained as well according to the provided drawings.

The structure, scale, size, et cetera, illustrated by this description, are only used to match the contents disclosed by the description, so as to be understood and read by those familiar with this technology. They are not taken as the limiting conditions to restrict the implementation of this utility model, so as to have no practical significance in technology. Without affecting the effect and the purpose that this utility model can produce and achieve, any structural modifications, changes of scaling relations or size adjustment, shall still fall within the scope of technical content disclosed by this utility model.

Fig.1 is a schematic diagram of the main structure of a random sampling device for gaseous samples illustrated according to an exemplary example; Fig.2 is a schematic diagram of the structure of a protection gear illustrated according to an exemplary example; Fig.3 is a schematic diagram of the top view structure of a random sampling device for gaseous samples illustrated according to an exemplary example; Figures: 1, protective gear; 2, bottom cylinder; 3, sealing cover; 4, clump weight; 5, mixed sampling appliance; 6, mixing barrel, 7, supporting rack; 8, plugging block; 9, collecting cylinder; 10, outlet; 11, connecting rod; 12, water outlet holes.

DETAILED DESCRIPTION OF THE EMBODYMENTS The following explains the implementation of this utility model with specific examples. Those familiar with this technology can easily understand other advantages and functions of this utility model through the contents disclosed by this description. Obviously, the described examples are a part of the examples of this utility model, but not the entire examples. Based on the examples of this utility model, all other examples got by those ordinary skilled in the art on the premise of no creative work being done, all belong to the protection scope of this utility model.

According to the examples of this utility model, a random sampling device for gaseous samples is provided. As illustrated in Figs. 1-2, the random sampling device for gaseous samples comprises: Protective gear 1 and a mixed sampling appliance 5, the said protective gear 1 is cup-shaped, and comprises a bottom cylinder 2 and a sealing cover 3. The sealing cover 3 can cover on the 3

BL-5276 upper opening of the bottom cylinder 2. LU500480 The gaseous sample is disposed inside of the chamber of the bottom cylinder 2. During the actual test process, gaseous samples are in bottles or bags, and the material is selected according to the cost of gaseous sample. The shapes of the bottle or bag used to hold the gas sample are different, and the abilities to withstand the impact are different. The clump weight 4 is fixedly arranged on the bottom surface of the bottom cylinder 2.

The mixed sampling appliance 5 comprises a mixing barrel 6, a supporting rack 7, a plugging block 8 and a collecting cylinder 9. The mixing barrel 6 is arranged on the supporting rack 7. The bottom of the mixing barrel 6 is funnel shaped. As illustrated in Fig.3, an outlet 10 is arranged at the center of the bottom of the mixing barrel 6. This outlet 10 is a circle whose diameter is larger than the diameter of protective gear 1, and the diameter of this outlet is less than twice the diameter of the protective gear 1. The plugging block 8 can block off this outlet

10. Among that, plugging block 8 can be either a rubber block or a silicone block.

In some alternative examples, the top of the said plugging block 8 is fixedly set with connecting rod 11.

In some alternative examples, the inlet of the collecting cylinder 9 is detachably mounted on the outlet 10 with a flange. The side surface of the collecting cylinder 9 is provided with the water outlet holes 12. The collecting cylinder 9 is a stainless steel cylinder shaped structure, and the side surface is provided with the water outlet holes 12.

In some alternative examples, the bottom opening of the said sealing cover 3 is provided with the internal threads. The upper opening of the said bottom cylinder 2 is provided with the external threads. The bottom opening of the sealing cover 3 and the upper opening of the bottom cylinder 2 are connected by threaded connection, which is convenient to form a detachable connection between the sealing cover 3 and the bottom cylinder 2.

In some alternative examples, the number of the said water outlet holes 12 is multiple. The said water outlet holes 12 are arranged along the said collecting cylinder 9 circumferentially and axially, which means, arranged along the side surface of the collecting cylinder 9, and can be either uniformly distributed or non-uniformly distributed, so as to facilitate water (rainfall) draining from the collecting cylinder 9.

Operating Principle: Firstly, the gaseous sample is put into the protective gear 1. The protective gear 1 works for the purpose of protecting gaseous sample on the one hand. And the gaseous sample forms a fixed diameter through the protective gear 1 on the other hand.

Then the outlet 10 of the mixing barrel is blocked with the plugging block 8, water is injected into the mixing barrel 6. Next the protective gear 1 contained with the gaseous sample is put 4

BL-5276 into the water, and the protective gear 1 gets the status of floating on the water. At this point, LUs00480 the protective gear 1 equipped with clump weight 4 ensures the protective gear 1 is in the status of perpendicular to the water surface. Using an external stirring rod can have these protective gears 1 fully mixed. After the stirring, the plugging block 8 is pulled out. At this point, the connecting rod 11 makes it easy to pull out the plugging block 8. The protective gears 1 flow downward with water and enter inside of the collecting cylinder 9. The inner diameter of the collecting cylinder 9 is slightly larger than the diameter of protective gear 1. The vertically down flowing protection gears 1 are arranged inside of the collecting cylinder 9 in turn. Among them, the number of protective gears 1 is multiple. Finally, after demounting the collecting cylinder 9 from the mixing barrel 6, according to the random decided numbers in advance, the protective gears 1 with corresponding numbers are chose. The gaseous samples inside of these protective gears 1 are used as the sampling samples, and the process of random sampling for the gaseous samples is completed.

The random sampling device for gaseous samples of this utility model has the features of simple structure, convenient random sampling. It’s convenient for random sampling to gaseous sample.

Though the above article has made fully description for this utility model by general explanation and specific examples, on the basis of this utility model, some modifications or improvements may get applied toward it, which is obvious for those skilled in this art. Therefore, all these modifications or improvements without departing from the foundation of spirit of this utility model belong to the protection scope required by this utility model.

Claims

BL-5276 CLAIMS: LU500480

1. A random sampling device for gaseous samples characterized by comprising: a protective gear which is cup-shaped and comprises a bottom cylinder and a sealing cover, the sealing cover being able to cover on an upper opening of the bottom cylinder, a gaseous sample being disposed inside of a chamber of the bottom cylinder, a bottom surface of the bottom cylinder being fixedly set with a clump weight; a mixed sampling appliance comprising a mixing barrel, a supporting rack, a plugging block and a collecting cylinder, the mixing barrel being set on the supporting rack, a bottom of the mixing barrel being funnel shaped, and an outlet being set at a center of the bottom of the mixing barrel, the outlet being a circle whose diameter is larger than a diameter of the protective gear, and the diameter of the outlet being less than twice the diameter of the protective gear, the plugging block being able to block off the outlet, an inlet of the collecting cylinder being detachably mounted on the outlet, water outlet holes being set on a side surface of the collecting cylinder.

2. The random sampling device for gaseous samples according to claim 1, characterized in that the inlet of the collecting cylinder is detachably mounted on the outlet through a flange.

3. The random sampling device for gaseous samples according to claim 1, characterized in that a connecting rod is set on a top of the plugging block.

4. The random sampling device for gaseous samples according to claim 1, characterized in that a lower opening of the sealing cover is arranged with internal threads, a upper opening of the bottom cylinder is arranged with external threads, and the lower opening of the sealing cover and the upper opening of the bottom cylinder are connected by threaded connection.

5. The random sampling device for gaseous samples according to claim 1, characterized in that a number of the water outlet holes is multiple, and the water outlet holes are arranged along the said collecting cylinder circumferentially and axially.

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