CN211954893U

CN211954893U - White spirit analyzing and extracting device

Info

Publication number: CN211954893U
Application number: CN202020591285.1U
Authority: CN
Inventors: 王双
Original assignee: Sichuan Jiannanchun Group Co ltd
Current assignee: Sichuan Jiannanchun Group Co ltd
Priority date: 2020-04-20
Filing date: 2020-04-20
Publication date: 2020-11-17
Anticipated expiration: 2030-04-20

Abstract

The utility model discloses a white spirit analysis extraction element, including the water bath bucket, a pedestal, driving motor, the permanent magnetism carousel, extract the bottle, the bottle plug, the extraction tube, a piston, the rotary drum, the stirring rake, permanent magnetism piece and stopcock, the bottom joint that will be equipped with the extraction bottle of analyte is fixed water bath heating in the water bath bucket, it rotates to drive permanent magnetism piece through magnetic attraction, thereby to stirring the analyte of extracting in the bottle, it is more abundant even to make the analyte of extracting in the bottle heat in the water bath bucket, and make the volatile substance in the analyte fully volatilize, connect the sampling tube among the volatile gas analytical instrument with the top of extraction tube again, then upwards stimulate the extraction tube, the gas that will extract volatile substance in the bottle in addition initiatively pumps into analytical instrument, the convenient sample, reduce the gas overflow that takes off the bottle plug sample and lead to scatter and pollute, ensure the accuracy of analysis, can be used for extracting volatile substances from various substances such as Chinese liquor, distiller's grains, cellar mud, yellow water, etc.

Description

White spirit analyzing and extracting device

Technical Field

The utility model relates to an analytical equipment technical field specifically is a white spirit analysis extraction element.

Background

The detection of volatile substances in white spirit, vinasse, pit mud, yellow water and brewing raw materials is to clarify the types and contents of the volatile substances, and is an important means for evaluating the quality of white spirit and the brewing production quality. At present, volatile substances in white spirit, distiller grains and the like are collected and heated to a sufficient temperature mainly through direct or indirect heat exchange, so that the volatile substances are volatilized or separated, and then volatilized gas is extracted through a sampling needle. However, if a relatively viscous liquid sample or a solid sample is encountered, the analysis method cannot ensure that the volatile substances in the sample or at the bottom are completely volatilized, and the sample is easily polluted during the sampling process.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a first technical problem who solves does: the white spirit analyzing and extracting device is beneficial to complete volatilization of volatile substances.

In order to solve the technical problem, the utility model provides a following technical scheme:

the white spirit analyzing and extracting device comprises a water bath barrel and an extracting bottle, wherein a bottle opening is formed in the top of the extracting bottle, a bottle plug is fixedly connected in the bottle opening, and the extracting bottle is fixedly arranged on a bottom plate of an inner cavity of the water bath barrel; the water bath barrel is fixedly arranged on the upper surface of the base, a groove capable of containing the permanent magnet turntable is formed in the bottom surface of the water bath barrel or the upper surface of the base, the permanent magnet turntable is in transmission connection with the output end of the driving motor, the permanent magnet turntable is arranged right below the extraction bottle, and the rotating axis of the permanent magnet turntable is vertically arranged; the support rod is vertically and fixedly arranged in the middle of the inner cavity of the extraction bottle, and the rotary drum is sleeved on the outer wall of the support rod and forms a rotating fit with the support rod; the stirring paddle is fixedly connected with the outer wall of the rotary drum; the permanent magnet block is a permanent magnet with a ring body structure and is fixedly connected to the outer wall of the rotary drum; the permanent magnet blocks, the rotary drum and the support rod are all arranged coaxially with the permanent magnet turntable.

As a further aspect of the present invention: the water bath barrel is of a hollow cylinder structure with an opening on the top surface, the left side and the right side of the water bath barrel are respectively provided with a water inlet pipe and a water outlet pipe near the bottom, the water outlet pipe is connected with the input end of the water heater, and the water inlet pipe is connected with the output end of the water heater.

As a further aspect of the present invention: the inner chamber center of water bath bucket is equipped with circular boss, and the top surface center of this boss is equipped with circular recess, and the internal diameter of recess is the same with the bottom external diameter of extracting the bottle, and the bottom joint of extracting the bottle is fixed in the circular recess of water bath bucket inner chamber center boss.

As a further aspect of the present invention: the base is equipped with the cylinder structure of circular recess for the bottom surface, and driving motor is fixed to be set up in the recess of base bottom surface, and driving motor's output shaft is vertical sets up, and its output shaft passes the top surface center of base after with permanent magnetism carousel key-type connection, and the bottom surface center of water bath bucket is equipped with the circular recess that can hold the permanent magnetism carousel, and the internal diameter of this recess is greater than the external diameter of permanent magnetism carousel.

As a further aspect of the present invention: the upper end and the lower extreme of the outer wall of rotary drum are a set of stirring rake of fixedly connected with respectively, and every group stirring rake comprises four stirring rakes that are the annular array and distribute, the stirring rake is the square plate that the slope set up, and permanent magnetism piece fixed connection is in the outer wall middle part position of rotary drum.

For solving the problem that the sampling process is easy to be polluted, the utility model can be improved as follows: the extraction bottle is a circular container with an opening at the bottom, a circular boss with the same inner diameter as the bottle opening of the extraction bottle is arranged at the bottom of the bottle stopper, a circular through hole is arranged at the center of the bottle stopper, an extraction pipe is connected to the inner wall of the through hole in a sliding manner, the extraction pipe is of a circular tubular structure with a sealed bottom, a piston is fixedly arranged at the bottom of the extraction pipe, the piston is of a cylindrical structure, and the outer wall of the piston is in close contact with the inner; the extraction tube is also used as a support rod, and the lower half section of the outer wall of the extraction tube is used for sleeving the rotary drum; the middle part of the outer wall of the extraction tube is provided with an air outlet, and the upper end of the extraction tube penetrates through the bottle stopper and then is fixedly connected with a tube plug.

As a further aspect of the present invention: the piston is the rubber material cylinder, and its center is equipped with the circular through-hole with extraction tube sliding fit, and the outer wall bottom of extraction tube is equipped with the external screw thread, and the bottom of piston is equipped with the layer board, and the top surface center of layer board is equipped with the boss, and the top surface center of boss is equipped with the screw, in the screw of the bottom screw in piston bottom layer board of extraction tube for the bottom of piston and extraction tube is fixed.

As a further aspect of the present invention: when the bottom of the extraction bottle is clamped and fixed in the circular groove of the central boss of the inner cavity of the water bath barrel, the depth of the circular groove of the central boss of the inner cavity of the water bath barrel is the same as the thickness of the piston.

As a further aspect of the present invention: the pipe plug is of a cylindrical structure with a boss at the center of the top surface, a circular groove is formed at the center of the bottom surface, the inner diameter of the groove is the same as the outer diameter of the extraction pipe, and the pipe plug can be fixed at the top of the extraction pipe through interference fit; the bottom surface of the pipe plug is contacted with the top surface of the bottle plug; the top surface of the bottle stopper and the bottom surface of the pipe stopper are coated with polyester resin.

As a further aspect of the present invention: the fixed snap ring that is provided with in outer wall middle part of extraction tube, the rotary drum sets up between snap ring and piston, and the venthole at extraction tube outer wall middle part sets up in the snap ring top.

Compared with the prior art, the beneficial effects of the utility model are that: the bottom joint of the extraction bottle with the analyte is fixed in a water bath barrel for water bath heating, the permanent magnet block is driven to rotate through magnetic attraction, the analyte in the extraction bottle is stirred, the analyte in the extraction bottle is heated in the water bath barrel more sufficiently and uniformly, volatile substances in the analyte are sufficiently volatilized, after the volatile substances in the analyte in the extraction bottle are completely volatilized, the tube plug is taken down, the top of the extraction tube is connected with the sampling tube in the volatile gas analysis instrument, then the extraction tube is pulled upwards, the piston is moved upwards, gas with the volatile substances in the extraction bottle is actively pumped into the analysis instrument, sampling is convenient, gas overflow and pollution caused by taking down the bottle plug for sampling are reduced, the analysis accuracy is ensured, the device is simple in structure and convenient to use, and the extraction bottle can be suitable for common liquid in the field of white spirit, Extracting volatile substances of different analytes such as viscous liquid, solid and the like.

Drawings

Fig. 1 is a schematic structural diagram of a white spirit analyzing and extracting device.

Fig. 2 is a schematic structural diagram of an extracting and stirring device inside an extracting bottle in the white spirit analyzing and extracting device.

FIG. 3 is a schematic structural diagram of the connection part of the extraction tube and the piston in the white spirit analyzing and extracting device.

Labeled as: the device comprises a water bath barrel 1, a base 2, a driving motor 3, a permanent magnet turntable 4, an extraction bottle 5, a bottle stopper 6, an extraction tube 7, a piston 8, a rotary drum 9, a stirring paddle 10, a permanent magnet block 11 and a tube stopper 12.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 3, in the embodiment of the present invention, a white spirit analyzing and extracting apparatus includes a water bath barrel 1, a base 2, a driving motor 3, a permanent magnet turntable 4, an extracting bottle 5, a bottle stopper 6, an extracting tube 7, a piston 8, a rotary drum 9, a stirring paddle 10, a permanent magnet 11, and a tube plug 12.

Wherein, the top of the extraction bottle 5 is provided with a bottle mouth, a bottle stopper 6 is fixedly connected in the bottle mouth, and the extraction bottle 5 is fixedly arranged on the bottom plate of the inner cavity of the water bath barrel 1; the water bath barrel 1 is fixedly arranged on the upper surface of the base 2, a groove capable of containing the permanent magnet turntable 4 is formed in the bottom surface of the water bath barrel 1 or the upper surface of the base 2, the permanent magnet turntable 4 is in transmission connection with the output end of the driving motor 3, the permanent magnet turntable 4 is arranged right below the extraction bottle 5, and the rotating axis of the permanent magnet turntable 4 is vertically arranged; the support rod is vertically and fixedly arranged in the middle of the inner cavity of the extraction bottle 5, and the rotary drum 9 is sleeved on the outer wall of the support rod and forms a rotating fit with the support rod; the stirring paddle 10 is fixedly connected with the outer wall of the rotary drum 9; the permanent magnet 11 is a permanent magnet with a ring structure, and the permanent magnet 11 is fixedly connected to the outer wall of the rotary drum 9; the permanent magnet 11, the rotary drum 9 and the support rod are all arranged coaxially with the permanent magnet turntable 4. During the implementation, from the bottleneck of extracting bottle 5 to extracting bottle 5 in adding the analyte, make its stirring rake 10 of crossing the top, go on water bath heating after going up bottle plug 6, in the heating process, by driving motor 3 drive permanent magnetism carousel 4, permanent magnetism carousel 4 can rotate in the recess of water bath bucket 1 below, it rotates to drive permanent magnetism piece 11 through magnetic attraction, thereby rotate rotary drum 9, drive stirring rake 10 through rotary drum 9 and rotate, stir the analyte in extracting bottle 5, make the analyte in extracting bottle 5 more abundant even in water bath bucket 1 heating, and make the volatile substances in the analyte fully volatilize. Preferably, the extraction bottle 5 is a glass container, the outer diameter of the bottle mouth is 1.3cm, the outer diameter of the bottom is 2cm, and the height of the bottle body is 7.5 cm; the permanent magnet turntable 4 and the permanent magnet blocks 11 are made of rubidium magnets, so that the magnetic force is strong, and the transmission is convenient; the rotary drum 9 and the stirring paddle 10 are made of polytetrafluoroethylene materials, so that the adhesion of an analyte can be prevented, the cleaning is convenient, and the effects of small friction force and sensitive rotation are achieved; the driving motor 3 is a ZYTD520 type miniature DC speed reducing motor and is powered by an external power supply.

For simple and practical structure, the water bath barrel 1 is a hollow cylinder structure with an open top surface, the left and right sides of the water bath barrel are respectively provided with a water inlet pipe and a water outlet pipe near the bottom, the water outlet pipe is connected with the input end of the water heater, and the water inlet pipe is connected with the output end of the water heater. In the implementation, constant temperature hot water is provided by a water heater, and the extraction bottle 5 arranged in the water bath barrel 1 is heated in a water bath.

For making simple structure practical, the inner chamber center of water bath bucket 1 is equipped with circular boss, and the top surface center of this boss is equipped with circular recess, and the internal diameter of recess is the same with the bottom external diameter of extracting bottle 5, and the bottom joint of extracting bottle 5 is fixed in the circular recess of 1 inner chamber center boss of water bath bucket.

For making simple structure practical, base 2 is equipped with the cylinder structure of circular recess for the bottom surface, and driving motor 3 is fixed to be set up in the recess of base 2 bottom surface, and driving motor 3's output shaft is vertical sets up, and its output shaft passes behind base 2's the top surface center with 4 key-type connections of permanent magnetism carousel, and the bottom surface center of water bath bucket 1 is equipped with the circular recess that can hold permanent magnetism carousel 4, and the internal diameter of this recess is greater than the external diameter of permanent magnetism carousel 4. This drive structure is comparatively simple, need not set up complicated drive mechanism, and permanent magnetism carousel 4 can through the direct fixed connection of mode of key-type connection at driving motor 3's output shaft.

In order to obtain a better stirring effect, the upper end and the lower end of the outer wall of the rotary drum 9 are respectively and fixedly connected with a group of stirring paddles 10, each group of stirring paddles 10 is composed of four stirring paddles 10 distributed in an annular array, each stirring paddle 10 is a square plate arranged in an inclined mode, and the permanent magnet blocks 11 are fixedly connected to the middle of the outer wall of the rotary drum 9.

For solving the problem that the sampling process is easy to be polluted, the utility model can be improved as follows: the extraction bottle 5 is a circular container with an opening at the bottom, a circular boss with the same inner diameter as the bottle opening of the extraction bottle 5 is arranged at the bottom of the bottle stopper 6, a circular through hole is arranged at the center of the bottle stopper 6, the inner wall of the through hole is connected with an extraction tube 7 in a sliding manner, the extraction tube 7 is of a circular tubular structure with a sealed bottom, a piston 8 is fixedly arranged at the bottom of the extraction tube 7, the piston 8 is of a cylindrical structure, and the outer wall of the piston is in close contact with the inner wall; the extraction tube 7 is also used as a support rod, and the lower half section of the outer wall of the extraction tube is sleeved with the rotary drum 9; the middle part of the outer wall of the extraction pipe 7 is provided with an air outlet, and the upper end of the extraction pipe 7 is fixedly connected with a pipe plug 12 after passing through the bottle plug 6. During the implementation, after the volatile substance in the analyte substance in the extraction bottle 5 volatilizees completely, take off stopcock 12, connect the sampling tube among the volatile gas analytical instrument again with the top of extraction tube 7, then upwards stimulate extraction tube 7 for piston 8 rebound, in the gas initiative pump income analytical instrument that will extract volatile substance in the bottle 5 in addition, convenient sample, the gas that the reduction took off 6 samples to lead to spills and pollutes, ensures the accuracy of analysis.

Referring to fig. 3, for ease of assembly, the preferred connection between the piston 8 and the extraction tube 7 is: piston 8 is the rubber material cylinder, its center be equipped with 5 sliding fit's of extraction tube circular through-hole, extraction tube 7's outer wall bottom is equipped with the external screw thread, piston 8's bottom is equipped with the layer board (preferably high density polyethylene material plectane), the top surface center of layer board is equipped with boss (preferably circular boss), the top surface center of boss is equipped with the screw, in the screw of the bottom screw in piston 8 bottom layer board of extraction tube 7 for piston 8 is fixed with extraction tube 7's bottom. In practice, after the piston 8 and the bottom of the extraction tube 7 are fixed, the extraction tube 7 is upward and inserted from the bottom of the extraction bottle 5, so that the piston 8 seals the bottom of the extraction bottle 5.

When the bottom joint of extracting bottle 5 was fixed in the circular recess of 1 inner chamber center boss of water bath bucket, the circular recess degree of depth of 1 inner chamber center boss of water bath bucket was the same with piston 8's thickness for the analyte in extracting bottle 5 fully contacts with the constant temperature hot water in the water bath bucket 1.

As a further aspect of the present invention: the pipe plug 12 is a cylindrical structure with a boss (preferably a circular boss) at the center of the top surface, a circular groove is arranged at the center of the bottom surface, the inner diameter of the groove is the same as the outer diameter of the extraction pipe 7, and the groove can be fixed at the top of the extraction pipe 7 through interference fit; the bottom surface of the pipe plug 12 is contacted with the top surface of the bottle plug 6; the top surface of the bottle stopper 6 and the bottom surface of the pipe stopper 12 are coated with polyester resin, so that an adhesive effect is provided between the two contact surfaces, the pipe stopper 12 and the bottle stopper 6 are convenient to fix, and volatile matter is prevented from overflowing.

For conveniently realizing axial spacing of the rotary drum 9, the middle part of the outer wall of the extraction pipe 7 is fixedly provided with a snap ring, the rotary drum 9 is arranged between the snap ring and the piston 8, and an air outlet hole in the middle part of the outer wall of the extraction pipe 7 is arranged above the snap ring.

The utility model discloses a theory of operation is: adding an analyte into the extraction bottle 5 from the bottle mouth of the extraction bottle 5, enabling the analyte to overflow the stirring paddle 10 above, plugging the bottle plug 6, sleeving the tube plug 12 from the top of the extraction tube 7, clamping and fixing the bottom of the extraction bottle 5 filled with the analyte in the water bath barrel 1 for heating the water bath, switching on a power supply through the driving motor 3, enabling the permanent magnet rotary disc 4 to rotate in the groove on the bottom surface of the water bath barrel 1, driving the permanent magnet block 11 to rotate through magnetic attraction, thereby rotating the rotary drum 9, driving the stirring paddle 10 to rotate through the rotary drum 9, stirring the analyte in the extraction bottle 5, enabling the analyte in the extraction bottle 5 to be heated in the water bath barrel 1 more fully and uniformly, fully volatilizing volatile substances in the analyte, taking off the tube plug 12 after the volatile substances in the analyte in the extraction bottle 5 are completely volatilized, connecting the top of the extraction tube 7 with a sampling tube in a volatile gas analysis instrument, then upwards pull extraction pipe 7 again for piston 8 moves upwards, in will extracting the gas initiative pump of the volatile substance in the bottle 5 and go into the analytical instrument, conveniently take a sample, reduce and take off the gas overflow that bottle plug 6 sample led to and scatter and the pollution, ensure the accuracy of analysis.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. A white spirit analyzing and extracting device comprises a water bath barrel (1) and an extracting bottle (5), wherein a bottle opening is formed in the top of the extracting bottle (5), a bottle stopper (6) is fixedly connected in the bottle opening, and the extracting bottle (5) is fixedly arranged on a bottom plate of an inner cavity of the water bath barrel (1); the method is characterized in that: the water bath machine is characterized by further comprising a base (2), a driving motor (3), a permanent magnet turntable (4), a supporting rod, a rotary drum (9), a stirring paddle (10) and a permanent magnet block (11), wherein the water bath barrel (1) is fixedly arranged on the upper surface of the base (2), a groove capable of accommodating the permanent magnet turntable (4) is formed in the bottom surface of the water bath barrel (1) or the upper surface of the base (2), the permanent magnet turntable (4) is in transmission connection with the output end of the driving motor (3), the permanent magnet turntable (4) is arranged under the extraction bottle (5), and the rotating axis of the permanent magnet turntable (4) is vertically arranged; the support rod is vertically and fixedly arranged in the middle of the inner cavity of the extraction bottle (5), and the rotary drum (9) is sleeved on the outer wall of the support rod and forms rotating fit with the support rod; the stirring paddle (10) is fixedly connected with the outer wall of the rotary drum (9); the permanent magnet (11) is a permanent magnet with a ring structure, and the permanent magnet (11) is fixedly connected to the outer wall of the rotary drum (9); the permanent magnet blocks (11), the rotary drum (9) and the support rod are all arranged coaxially with the permanent magnet rotary table (4).

2. The white spirit analyzing and extracting device according to claim 1, characterized in that: the water bath barrel (1) is of a hollow cylinder structure with an opening on the top surface, the left side and the right side of the water bath barrel are respectively provided with a water inlet pipe and a water outlet pipe near the bottom, the water outlet pipe is connected with the input end of a water heater, and the water inlet pipe is connected with the output end of the water heater.

3. The white spirit analyzing and extracting device according to claim 1, characterized in that: the inner chamber center of water bath bucket (1) is equipped with circular boss, and the top surface center of this boss is equipped with circular recess, and the internal diameter of recess is the same with the bottom external diameter of extracting bottle (5), and the bottom joint of extracting bottle (5) is fixed in the circular recess of water bath bucket (1) inner chamber center boss.

4. The white spirit analyzing and extracting device according to claim 1, characterized in that: base (2) are equipped with the cylinder structure of circular recess for the bottom surface, and driving motor (3) are fixed to be set up in the recess of base (2) bottom surface, and the output shaft of driving motor (3) is vertical sets up, its output shaft pass the top surface center of base (2) back with permanent magnetism carousel (4) key-type connection, and the bottom surface center of water bath bucket (1) is equipped with the circular recess that can hold permanent magnetism carousel (4), and the internal diameter of this recess is greater than the external diameter of permanent magnetism carousel (4).

5. The white spirit analyzing and extracting device according to claim 1, characterized in that: the upper end and the lower end of the outer wall of the rotary drum (9) are respectively and fixedly connected with a group of stirring paddles (10), each group of stirring paddles (10) is composed of four stirring paddles (10) distributed in an annular array, each stirring paddle (10) is a square plate arranged obliquely, and a permanent magnet block (11) is fixedly connected to the middle position of the outer wall of the rotary drum (9).

6. A white spirit analyzing and extracting device according to any one of claims 1 to 5, characterized in that: the extraction bottle (5) is a circular container with an opening at the bottom, a circular boss with the same inner diameter as the bottle opening of the extraction bottle (5) is arranged at the bottom of the bottle stopper (6), a circular through hole is formed in the center of the bottle stopper (6), an extraction pipe (7) is connected to the inner wall of the through hole in a sliding mode, the extraction pipe (7) is of a circular tubular structure with a sealed bottom, a piston (8) is fixedly arranged at the bottom of the extraction pipe (7), the piston (8) is of a cylindrical structure, and the outer wall of the piston is in close contact with the inner wall of the extraction;

the extraction tube (7) is also used as a support rod, and the lower half section of the outer wall of the extraction tube is sleeved with the rotary drum (9); the middle part of the outer wall of the extraction pipe (7) is provided with an air outlet, and the upper end of the extraction pipe (7) penetrates through the bottle stopper (6) and then is fixedly connected with a pipe stopper (12).

7. The white spirit analyzing and extracting device according to claim 6, characterized in that: piston (8) are the rubber material cylinder, and its center is equipped with the circular through-hole with extraction tube (7) sliding fit, and the outer wall bottom of extraction tube (7) is equipped with the external screw thread, and the bottom of piston (8) is equipped with the layer board, and the top surface center of layer board is equipped with the boss, and the top surface center of boss is equipped with the screw, in the screw of the bottom screw in piston (8) bottom layer board of extraction tube (7) for the bottom of piston (8) and extraction tube (7) is fixed.

8. The white spirit analyzing and extracting device according to claim 6, characterized in that: when the bottom of the extraction bottle (5) is clamped and fixed in the circular groove of the central boss of the inner cavity of the water bath barrel (1), the depth of the circular groove of the central boss of the inner cavity of the water bath barrel (1) is the same as the thickness of the piston (8).

9. The white spirit analyzing and extracting device according to claim 6, characterized in that: the pipe plug (12) is of a cylindrical structure with a boss at the center of the top surface, a circular groove is formed at the center of the bottom surface, the inner diameter of the groove is the same as the outer diameter of the extraction pipe (7), and the pipe plug can be fixed at the top of the extraction pipe (7) through interference fit; the bottom surface of the pipe plug (12) is contacted with the top surface of the bottle plug (6); the top surface of the bottle stopper (6) and the bottom surface of the pipe stopper (12) are coated with polyester resin.

10. The white spirit analyzing and extracting device according to claim 6, characterized in that: the middle part of the outer wall of the extraction pipe (7) is fixedly provided with a clamping ring, the rotary drum (9) is arranged between the clamping ring and the piston (8), and an air outlet hole in the middle part of the outer wall of the extraction pipe (7) is arranged above the clamping ring.