阅读说明：本技术 一种分析烟气粒相物中沉降成分的装置及方法 (Device and method for analyzing sedimentation components in smoke particulate matter ) 是由 田震 何红梅 汪金玲 李少鹏 陈海清 孙海平 吴佳 胡宗玉 钱建财 许强 于 2021-08-24 设计创作，主要内容包括：本发明涉及卷烟烟气分析技术领域,尤其涉及一种分析烟气粒相物中沉降成分的装置及方法。这种装置包括壳体,所述壳体的两端分别设有烟气进口和烟气出口,所述壳体内沿烟气进口至烟气出口的方向依次包括沉降室和过滤室,所述烟气进口与所述沉降室之间设有第一阀门,所述沉降室与所述过滤室之间设有第二阀门；所述沉降室内设有沉降物载网以及用于调节沉降室内温度的温控件,所述过滤室内设有滤片。本申请中,通过沉降室和过滤室的设置,可以收集不同温度环境下烟气粒相物中的沉降物和未沉降物,从而可以分析出不同温度环境下沉降物的成分并计算出烟气粒相物中沉降物的比例,为卷烟的减害降焦提供指导。(The invention relates to the technical field of cigarette smoke analysis, in particular to a device and a method for analyzing sedimentation components in smoke particulate matters. The device comprises a shell, wherein a smoke inlet and a smoke outlet are respectively arranged at two ends of the shell, a settling chamber and a filtering chamber are sequentially arranged in the shell along the direction from the smoke inlet to the smoke outlet, a first valve is arranged between the smoke inlet and the settling chamber, and a second valve is arranged between the settling chamber and the filtering chamber; the settling chamber is internally provided with a sediment carrying net and a temperature control piece for adjusting the temperature in the settling chamber, and the filtering chamber is internally provided with a filter disc. In this application, through the setting of deposit room and filter chamber, can collect deposit and not deposit in the flue gas particulate matter under the different temperature environment to can analyze out the composition of deposit under the different temperature environment and calculate the proportion of deposit in the flue gas particulate matter, provide the guidance for reducing harm and reducing tar of cigarette.)

1. The utility model provides an apparatus for subsiding composition among analysis flue gas particulate matter which characterized in that: the device comprises a shell (1), wherein a flue gas inlet (101) and a flue gas outlet (102) are respectively arranged at two ends of the shell, a settling chamber (2) and a filtering chamber (3) are sequentially arranged in the shell (1) along the direction from the flue gas inlet (101) to the flue gas outlet (102), a first valve (103) is arranged between the flue gas inlet (101) and the settling chamber (2), and a second valve (104) is arranged between the settling chamber (2) and the filtering chamber (3); a sediment carrying net (21) and a temperature control part for adjusting the temperature in the settling chamber (2) are arranged in the settling chamber (2), and a filter disc (31) is arranged in the filter chamber (3).

2. The apparatus of claim 1, wherein the apparatus is further configured to analyze the particulate matter in the flue gas by: the smoke inlet (101) is provided with a clamping pipe for inserting smoke.

3. The apparatus of claim 2, wherein the apparatus is further configured to: the housing (1) comprises a first housing (11) with an inner cavity forming the settling chamber (2) and a second housing (12) with an inner cavity forming the filtering chamber (3), the first housing (11) is connected with the second housing (12) through a threaded structure, and the first housing (11) is connected with the clamping pipe through a threaded structure.

4. The apparatus of claim 3, wherein the apparatus is further configured to analyze the particulate matter in the flue gas by: first casing (11) include with centre gripping pipe threaded connection's first fixed pipe, with the fixed pipe of second casing threaded connection's second to and set up between the fixed pipe of first fixed pipe and second, be used for through volumetric change with formation negative pressure or malleation, thereby realize the intake of flue gas and exhaust varactor shell, varactor shell include with first fixed pipe articulated first half shell (111), with fixed pipe articulated second half shell (112) of second, first half shell (111) and second half shell (112) are articulated.

5. The apparatus of claim 1, wherein the apparatus is further configured to analyze the particulate matter in the flue gas by: the first valve (103) and the second valve (104) are both one-way valves which can only allow the smoke to flow from the smoke inlet (101) to the smoke outlet (102).

6. The apparatus of claim 1, wherein the apparatus is further configured to analyze the particulate matter in the flue gas by: the smoke outlet (102) is provided with a smoke gas phase object collecting device.

7. The apparatus of claim 1, wherein the apparatus is further configured to analyze the particulate matter in the flue gas by: the filter disc (31) is a cambridge filter disc.

8. The apparatus of claim 1, wherein the apparatus is further configured to analyze the particulate matter in the flue gas by: casing (1) is equipped with import and export, deposit thing year net (21) one end book locate set up in on the outer pivot (4) of settling chamber (2), the other end passes through the import penetrates pass through behind settling chamber (2) the export is worn out settling chamber (2), deposit thing year net (21) are located the part in settling chamber (2) forms and subsides and carries thing portion.

9. The apparatus of claim 8, wherein the apparatus is further configured to: the outlet is provided with a sealing cover (22), and one surface of the sealing cover (22) close to the interior of the settling chamber (2) is provided with a hook body for fixing the settling object carrying net (21).

10. An analysis method using the apparatus for analyzing a sedimentary component in a particulate matter of flue gas according to any one of claims 1 to 9, characterized in that: the method comprises the following steps:

s1, setting the temperature in a settling chamber (2) according to the research needs of users, and starting preheating;

s2, after the settling chamber (2) reaches a set temperature, pulling the first shell (11), increasing the volume in the variable-volume shell, forming negative pressure in the settling chamber (2), and sucking smoke of cigarettes into the settling chamber (2) through the first valve (103);

s3, after settling for a fixed time, pushing the first shell (11), reducing the volume in the variable-volume shell, forming positive pressure in the settling chamber (2), and discharging the smoke after the smoke enters the filter chamber (3) through the second valve (104) and is filtered by the filter disc (31); respectively collecting sediments on the sediment carrying net (21) and non-sediments on the filter disc (31);

s4, repeating S2 and S3 until the burning of the cigarette is finished;

and S5, analyzing the components and the contents of the sediment and the non-sediment, and analyzing the proportion of the content of the sediment in the total content of the sediment and the non-sediment.

Technical Field

The invention relates to the technical field of cigarette smoke analysis, in particular to a device and a method for analyzing sedimentation components in smoke particulate matters.

Background

Cigarette smoke is essentially an aerosol consisting of thousands of chemical constituents, the composition of which is quite complex. The reason is that the oxygen concentration and the temperature in the combustion cone of the cigarette are different, and the tobacco generates complex smoke components through different reaction paths such as distillation, combustion, thermal cracking and the like. The aerosol of cigarette smoke is composed of gaseous, vaporous and solid substances, and the smoke part which can pass through a Cambridge filter (a filter made of glass fiber and can filter more than 99.5% of particles with the diameter of more than 0.3 mu m) at room temperature is called as gas-phase substance, and the intercepted smoke part is called as particle-phase substance.

Wherein, the particle size of the particle phase matter is larger, and in the process of smoking cigarette smoke by a user, partial components in the particle phase matter are easy to generate gravity sedimentation, so that the particle phase matter is deposited in the respiratory tract and the lung of the user and brings influence to the health of the user. Therefore, the research on the components which are easy to settle in the smoke particulate matters has important significance for reducing harm and tar of the cigarettes. However, as mentioned above, because the combustion temperature of the cigarette smoke is different, the components of the particulate matter are also different, so the components which are easy to settle in the particulate matter are also changed, if the components of the smoke particulate matter which is settled by gravity under different temperature environments and the proportion of the settled components in the total particulate matter can be clarified, the method has guiding significance for guiding the research in the fields of heating temperature, temperature reduction section temperature, cigarette filter tip rod, tobacco, safety and the like of the cigarette which is not combusted.

However, no method and device for researching the gravity settling components and proportion of particulate matters in the cigarette smoke under different temperature environments exist at present.

Although patent document with publication number CN110926886A discloses a device and a method for collecting total particulate matters in cigarette smoke, the device and the method comprise a first shell, the first shell comprises a linear channel with openings at two ends, a piston is matched in the linear channel, one end of the first shell is matched with a second shell, the second shell internally comprises a smoke channel, one end of the smoke channel is communicated with the linear channel, the other end of the smoke channel is matched with a cigarette holder, a filter disc is matched at an opening at one end of the linear channel, which is close to the second shell, the filter disc, the piston and the linear channel together form a smoke chamber, the piston changes the volume of the smoke chamber by axially sliding along the linear channel, the filter disc is used for collecting the total particulate matters entering the smoke chamber from the cigarette holder along the smoke channel, the piston is matched with the smoke chamber to simulate cigarette smoking, and the total particulate matters are collected by the filter disc in the smoking process, the collecting device has simple structure, but can meet the aim of quickly and conveniently collecting the total particulate matters in the smoke. However, in this application, only the total particulate matter of the flue gas can be collected, and the sedimentation components in the particulate matter of the flue gas cannot be collected, and the sedimentation components in different temperature environments cannot be analyzed.

Disclosure of Invention

The invention aims to solve the problems and provides a device and a method capable of analyzing the sedimentation components in smoke particulate matters under different temperature environments.

According to the technical scheme for solving the problems, the device for analyzing the sedimentation components in the smoke particulate matters comprises a shell, wherein a smoke inlet and a smoke outlet are respectively formed in two ends of the shell, a sedimentation chamber and a filtering chamber are sequentially arranged in the shell along the direction from the smoke inlet to the smoke outlet, a first valve is arranged between the smoke inlet and the sedimentation chamber, and a second valve is arranged between the sedimentation chamber and the filtering chamber; the settling chamber is internally provided with a sediment carrying net and a temperature control piece for adjusting the temperature in the settling chamber, and the filtering chamber is internally provided with a filter disc.

Preferably, the first valve and the second valve are both one-way valves which can only allow the smoke to flow from the smoke inlet to the smoke outlet.

Preferably, the smoke inlet is provided with a clamping pipe for inserting smoke.

Preferably, the flue gas outlet is provided with a flue gas phase material collecting device.

Preferably, the filter sheet is a cambridge filter sheet.

Preferably, the housing includes a first housing having an inner cavity forming the settling chamber, and a second housing having an inner cavity forming the filtering chamber, the first housing and the second housing are connected by a screw structure, and the first housing and the clamping pipe are connected by a screw structure.

Preferably, the first housing includes a first fixed pipe in threaded connection with the clamping pipe, a second fixed pipe in threaded connection with the second housing, and a variable volume housing disposed between the first fixed pipe and the second fixed pipe and used for forming a negative pressure or a positive pressure through a change in volume to realize suction and discharge of the smoke, the variable volume housing includes a first half shell hinged to the first fixed pipe and a second half shell hinged to the second fixed pipe, and the first half shell and the second half shell are hinged to each other.

Preferably, the first shell is provided with an inlet and an outlet, one end of the sediment carrying net is arranged on a rotating shaft arranged outside the settling chamber in a winding mode, the other end of the sediment carrying net penetrates into the settling chamber through the inlet and then penetrates out of the settling chamber through the outlet, and a part, located in the settling chamber, of the sediment carrying net forms a sediment carrying part.

Preferably, the outlet is provided with a sealing cover, and one surface of the sealing cover, which is close to the settling chamber, is provided with a hook body for fixing the settlement carrying net.

Preferably, the inlet is provided with a sealing silica gel brush.

Preferably, the sedimentation loading part comprises a plurality of loading layers, adjacent loading layers are connected through an arc winding part, and two inner walls of the sedimentation chamber are respectively provided with a shaft for fixing the arc winding part.

Preferably, the inner diameter of the outlet is larger than the thickness of the sediment carrier net.

Another object of the present invention is to provide an analysis method using the above apparatus for analyzing a settled component in a particulate matter of flue gas, comprising the following steps:

s1, setting the temperature in a settling chamber according to the research needs of users, and starting preheating;

s2, after the settling chamber reaches a set temperature, pulling the first shell to increase the volume in the variable-volume shell, forming negative pressure in the settling chamber, and sucking smoke of cigarettes into the settling chamber through the first valve;

s3, after settling for a fixed time, pushing the first shell, reducing the volume in the variable volume shell, forming positive pressure in the settling chamber, and discharging the smoke after the smoke enters the filter chamber through the second valve and is filtered by the filter disc; respectively collecting sediments on the sediment carrying net and non-sediments on the filter disc;

s4, repeating S2 and S3 until the burning of the cigarette is finished;

and S5, analyzing the components and the contents of the sediments and the non-sediments in each group, and analyzing the proportion of the sediment content in the total content of the sediments and the non-sediments.

The invention has the beneficial effects that:

1. in this application, through the setting of deposit room, can collect the deposit in the flue gas particulate matter under the different temperature environment, can provide the guidance through the harm reduction tar reduction that the composition of analysis deposit can the cigarette.

2. In the application, the filter chamber is arranged to collect the non-sediment in the smoke particle phase substance, so that the proportion of the sediment in the smoke particle phase substance in different temperature environments can be calculated, and guidance is further provided for reducing harm and tar of the cigarettes.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment 1 of an apparatus for analyzing a settled component in a particulate matter of flue gas;

FIG. 2 is a schematic diagram of the use of example 1 of an apparatus for analyzing the settled components of particulate matter in flue gas;

FIG. 3 is a schematic structural diagram of an embodiment 2 of an apparatus for analyzing a sedimentation component in a particulate matter of flue gas;

in the figure: the device comprises a shell 1, a smoke inlet 101, a smoke outlet 102, a first valve 103, a second valve 104, a first shell 11, a first half shell 111, a second half shell 112, a second shell 12, a settling chamber 2, a sediment carrying net 21, a carrying layer 211, an arc-shaped winding part 212, a sealing cover 22, a sealing silica gel brush 23, a shaft 24, a filtering chamber 3, a filter disc 31 and a rotating shaft 4.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the accompanying drawings, but the present invention is not limited to these embodiments.

Example 1

A device for analyzing settlement components in smoke particulate matters comprises a shell 1, wherein a smoke inlet 101 and a smoke outlet 102 are respectively arranged at two ends of the shell, a settling chamber 2 and a filtering chamber 3 are sequentially arranged in the shell 1 along the direction from the smoke inlet 101 to the smoke outlet 102, and based on the situation, the shell 1 comprises a first shell 11 with an inner cavity forming the settling chamber 2 and a second shell 12 with an inner cavity forming the filtering chamber 3. A first valve 103 is arranged between the flue gas inlet 101 and the settling chamber 2, and a second valve 104 is arranged between the settling chamber 2 and the filtering chamber 3; a sediment carrying net 21 and a temperature control part for adjusting the temperature in the settling chamber 2 are arranged in the settling chamber 2, and a filter disc 31 is arranged in the filter chamber 3.

When in use, smoke enters from the smoke inlet 101, passes through the first valve 103, the settling chamber 2, the second valve 104 and the filtering chamber 3 in sequence, and then is discharged from the smoke outlet 102. The first valve 103 and the second valve 104 are preferably one-way valves which only allow the flow of flue gas from the flue gas inlet 101 in the direction of the flue gas outlet 102.

Wherein, gas inlet 101 is used for into the flue gas, can set up a centre gripping pipe at gas inlet 101, also is an intubate, will be used for sending the cigarette of flue gas to prop up and insert in the intubate, can make the flue gas directly get into in the casing 1. Meanwhile, in order to prevent the cigarette from falling off from the insertion pipe, the inner wall of the insertion pipe can be provided with lines to improve the friction force; or providing a gripping structure at the cannula, such as; the two opposite ends of the pipe orifice of the insertion pipe are respectively provided with a clamping arm, one end of the clamping arm is connected with the insertion pipe through a torsion spring, and the other end of the clamping arm is abutted against the cigarette, so that the cigarette can be clamped.

The sediment carrier net 21 in the settling chamber 2 is used for receiving and collecting the sediment which is freely settled in the flue gas, and any material with meshes, preferably a flexible acetate fiber net, can be adopted as the sediment carrier net 21. The sediment carrier net 21 is preferably detachably mounted in the settling chamber 2 in order to collect the sediment loaded thereon after the settling has been completed. For example, in this embodiment, the cross-section of settling chamber 2 is the rhombus, and the biggest round of its inner diameter is the retainer plate, sets up the thorn hair portion that the round magic was pasted on the inner wall of retainer plate, carries net 21 with the deposit simultaneously and tailors to the shape the same with 2 inner chambers of settling chamber, carries the round hair portion that net 21 external diameter is the biggest at the deposit and sets up the round hair portion that the round magic was pasted, with round hair portion and thorn hair portion be connected can.

Meanwhile, in order to facilitate the removal of the sinker carrying net 21, various methods may be adopted, such as: the first shell 11 with the inner cavity forming the settling chamber 2 is formed by detachably connecting two half shells, the rhombic first shell 11 is divided into a left half shell and a right half shell which are in a circular truncated cone shape, and the settlement carrying net 21 is detachably connected with the inner wall of any half shell. Then, a convex ring is arranged at the bottom end of the circular table of one half shell, an annular groove is arranged at the bottom end of the circular table of the other half shell, and the convex ring is inserted into the annular groove. In order to improve the sealing performance, a silicon rubber ring can be arranged in the annular groove. Or the outer ring surface of the convex ring can be provided with external threads, and the inner wall of the annular groove is provided with internal threads to connect the two threads.

Alternatively, the first housing 11 and the second housing 12 are connected by a screw structure, and the first housing 11 and the holding pipe are connected by a screw structure, using the structure shown in fig. 1. When the sediment net 21 needs to be disassembled, the second shell 12 or the clamping pipe can be disassembled to expose the opening, and the sediment net 21 can be grasped through the opening to be taken out.

The filter sheet 31 in the filter chamber 3 is used for retaining the non-sedimented components in the particulate phase, i.e. the non-sedimented material, and the filter sheet 31 is preferably a cambridge filter sheet. Similar to sediment carrier 21, filter 31 is preferably removably mounted within filter chamber 3 in order to facilitate collection of non-sediment on filter 31. For example, in this embodiment, two ends of the filter 31 may be respectively provided with a mounting seat, the inner bottom of the second housing 12 is provided with a groove for accommodating the mounting seat, the top of the second housing 12 is provided with an opening and a cover for covering the opening, and the filter 31 can be inserted into the filter chamber 3 or taken out of the filter chamber 3 by opening the cover.

The flue gas outlet 102 is used for discharging flue gas after settling and filtering are finished, at the moment, the flue gas is mainly a gas phase substance, the gas phase substance also has great research value, and a flue gas phase substance collecting device can be arranged at the flue gas outlet 102, namely a collecting bottle is used for collecting the gas phase substance.

In order to drive the flue gas to smoothly flow from the flue gas inlet 101 to the flue gas outlet 102, a variable volume casing with a variable volume is designed in the present embodiment, that is, as shown in fig. 1, the first casing 11 includes a first fixed pipe in threaded connection with the clamping pipe, a second fixed pipe in threaded connection with the second casing, and a variable volume casing disposed between the first fixed pipe and the second fixed pipe, the variable volume casing includes a first half casing 111 hinged to the first fixed pipe, a second half casing 112 hinged to the second fixed pipe, and the first half casing 111 is hinged to the second half casing 112.

When the variable-volume shell is used, the clamping tube is kept fixed, the second shell 12 is controlled to move leftwards (or the second shell is kept fixed, the clamping tube is controlled to move rightwards, or the clamping tube and the second shell are controlled to move towards the opposite direction), namely, under the action of hinging, the volume of the variable-volume shell is reduced, and the variable-volume shell is changed into the state shown in fig. 2 from the state shown in fig. 1. On the contrary, the clamping pipe is kept fixed, and the second shell 12 is controlled to move rightwards, so that the volume of the variable volume shell is increased. Wherein, the deposit in the varactor shell carries net 21 to adopt flexible material to make, can cooperate the deformation of varactor shell.

Based on the structure, the method for analyzing the sedimentation of the smoke particulate matters comprises the following steps:

s1, according to the research needs of the user, the temperature in the settling chamber 2 is set by the temperature control element, the temperature is set to 50 ℃ in the embodiment, and the preheating is started.

S2, after the temperature in the settling chamber 2 reaches 50 ℃, the cigarette is inserted into the smoke inlet 101 and ignited. The first shell body 11 is pulled, so that the volume of the variable volume shell is increased, negative pressure is formed in the settling chamber 2, the first valve 103 is in an open state, and the second valve 104 is in a closed state, so that cigarette smoke enters the settling chamber 2. After the variable volume shell reaches a fixed volume, the air pressure in the settling chamber 2 is stable, and the first valve 103 and the second valve 104 are both in a closed state. The flue gas is settled for 50-70s at 50 ℃, in this example, 60s, and the particulate matter in the flue gas is settled freely and falls on the settlement carrying net 21.

S3, after the settling time is finished, the first shell 11 is pushed, the volume of the variable volume shell is reduced, positive pressure is formed in the settling chamber 2, the first valve 103 is in a closed state, the second valve 104 is in an open state, smoke is pressed into the filtering chamber 3, non-settled matters which cannot settle in smoke particle phase matters are intercepted by the filtering sheet 31, and residual smoke is discharged from the smoke outlet 102 and collected by the collecting bottle.

At this time, one puff on the cigarette is completed. Only one smoke spot can be analyzed, and then after one spot of suction, the sediment-carrying net 21 and the filter sheet 31 can be detached respectively, and sediment on the sediment-carrying net 21 and non-sediment on the filter sheet 31 can be collected. The total smoke of the cigarette can also be analyzed, so after a puff, the above operation of pulling or pushing the first housing 11 needs to be repeated until the cigarette is completely smoked, and then the sediment-carrying net 21 and the filter 31 are detached to collect sediment and non-sediment, which is the latter analysis method adopted in this embodiment.

S4, repeating S2 and S3 until the burning of the cigarette is finished.

And S5, analyzing the components and the contents of the sediment and the non-sediment by using a gas chromatography-mass spectrometry technology, and meanwhile, calculating the proportion of the content of the sediment in the total amount of the sediment and the non-sediment.

Example 2

This embodiment is substantially the same as embodiment 1, except that:

in order to reduce the steps of detaching and installing the sediment carrier net 21, as shown in fig. 3, in this embodiment, the first housing 11 is provided with an inlet and an outlet, one end of the sediment carrier net 21 is wound on the rotating shaft 4 disposed outside the settling chamber 2, the other end of the sediment carrier net 21 penetrates into the settling chamber 2 through the inlet and then penetrates out of the settling chamber 2 through the outlet, and the part of the sediment carrier net 21 located in the settling chamber 2 forms a sediment carrier part.

After the settlement is completed, the settlement carrying part can be pulled out of the settling chamber 2 only by pulling the settlement carrying net 21 to penetrate out of one end of the settling chamber 2, and at the moment, the clean settlement carrying net 21 part is also unreeled out of the rotating shaft 4 and pulled into the settling chamber 2 to form a new settlement carrying part. Then the original sedimentation object carrying part pulled out of the sedimentation chamber 2 is cut off, or the sedimentation object on the original sedimentation object carrying part is directly collected and then is rolled.

At this time, in order to ensure the sealing of the settling chamber 2, the inlet is provided with a sealing silica gel brush 23, and the dense brush 23 can be inserted into the mesh of the settlement carrying net 21 positioned at the outlet, so as to achieve the sealing effect. The outlet is provided with a sealing cover 22, one surface of the sealing cover 22 close to the interior of the settling chamber 2 is provided with a hook body for fixing the settlement carrying net 21, and the hook body can be inserted into the meshes of the settlement carrying net 21 to fix the settlement carrying net. When the settlement carrying part needs to be replaced after settlement is finished, the settlement carrying net 21 is pulled through the sealing cover 22.

And because the settlement carrying net 21 which can realize the above operation is usually thin and can be wound on the rotating shaft 4 well, and the sealing effect of the sealing silica gel hairbrush 23 is also good, the settlement carrying part in the settling chamber 2 has small volume and low load capacity. Therefore, in this embodiment, the sediment loading portion is disposed in the settling chamber 2 in a curved manner to increase the loading volume thereof, that is, the sediment loading portion includes a plurality of loading layers 211, adjacent loading layers 211 are connected by the arc-shaped winding portion 212, and two inner walls of the settling chamber 2 are respectively provided with the shaft 24 around which the arc-shaped winding portion 212 can wind.

During sedimentation, the sediment-carrying part is tensioned by the action of the shaft 24. Simultaneously, the above-mentioned first casing 11 of cooperation variable volume shell structure, after subsiding and finishing for when variable volume shell volume diminishes, first half shell 111 and second half shell 112 are close to each other, can make relative axle 24 be close to, make the deposit carry the portion can not be strained, when pulling out again at this moment and subsiding and carrying the thing portion, can avoid subsiding and carry the thing portion and take place great friction around taking place between the axle 24, lead to subsiding to carry the particle phase thing of the last load of thing portion and drop, influence analysis result. Simultaneously, when carrying out next suction, making the varactor shell volume grow, first half shell 111 and second half shell 112 keep away from each other again to it stretches tight to drive and subsides the expansion of year thing portion, improves its load effect. Meanwhile, in order to avoid the friction between the solid part at the outlet and the settlement carrying part, the inner diameter of the outlet is larger than the thickness of the settlement carrying net 21.

Although the filter 31 may have the same structure as the sediment net 21 in the present embodiment, two filters 31 may be used instead in general in consideration of the high cost of the cambridge filter.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.