CN216410761U

CN216410761U - Self-sealing type self-filtering sampler

Info

Publication number: CN216410761U
Application number: CN202123016367.7U
Authority: CN
Inventors: 汪国强; 曲政权
Original assignee: Tianjin Laikaiwei Environmental Protection Equipment Co ltd
Current assignee: Tianjin Laikaiwei Environmental Protection Equipment Co ltd
Priority date: 2021-12-03
Filing date: 2021-12-03
Publication date: 2022-04-29
Anticipated expiration: 2031-12-03

Abstract

The utility model provides a self-sealing type self-filtering sampler, which is used for solving the technical problems that the sampling efficiency is low due to the fact that the whole assembly and disassembly of the existing oil sampling bottle are complicated, and the next sampling analysis result is influenced by residual oil after sampling. The sampling mechanism comprises a sampling needle, a sampling head, a movable sealing assembly, a sealing support assembly, a cleaning assembly, a self-sealing cushion, a sampling needle, a sampling head, a sampling valve body, a sampling head, a sampling valve body, a filtering assembly and a sealing cover.

Description

Self-sealing type self-filtering sampler

Technical Field

The utility model relates to the technical field of sampling instruments, in particular to a self-sealing type self-filtering sampler.

Background

Oil sampler mainly used is to fluid sample, and sampling bottle on the current market mainly comprises double needle joint, guard shield and sampling bottle, has sealed sampling bottle who fills up through the double needle puncture, has a needle to advance the appearance, and airtight sample is realized to another needle exhaust, and this kind of sampling bottle has following problem: 1. the sealing gasket needs to be replaced frequently, and each protective cover cannot meet the installation of sampling bottles with different volumes according to actual working conditions; 2. the stroke is big when installing the sampling bottle and getting the sampling bottle, and whole process complex operation.

In addition, the safety of an oil analysis and test environment can be ensured by sampling through the oil sampler, and the artificial pollution of dust, impurities, water vapor and the like generated when an oil sample is extracted is prevented; at present, an oil sampler mainly comprises a negative-pressure oil extractor, a disposable pollution-free hose and a sampling bottle, the sampling bottle is screwed on an oil gun connector when the oil sampler is used, an oil gun handle is pushed and pulled back and forth, vacuum is formed in the sampling bottle, oil flows into the sampling bottle along the hose, the whole sampling process is very complicated, oil is often left after sampling, and the next sampling sample analysis result is influenced.

SUMMERY OF THE UTILITY MODEL

Aiming at the technical problems of low efficiency when replacing bottle bodies with different volumes according to needs and influence on the next sampling analysis result caused by residual oil after sampling in the existing oil sampling bottle, the utility model provides a self-sealing type self-filtering sampler, which effectively samples the bottle body by a sampling needle on a sampling mechanism penetrating through a self-sealing pad on the bottle body, has simple operation and good sealing performance, ensures the quality of the obtained sample and the sampling efficiency, simultaneously supports and seals a sampling head by a sealing support component to ensure the sealing performance during sampling, can effectively seal the bottle body by a movable sealing component when replacing the bottle bodies with different volumes according to needs, ensures the sealing performance of the bottle bodies with different volumes, further improves the sealing performance during sampling, and effectively cleans a valve body and the sampling head which are introduced with oil by a cleaning component before and after sampling is completed, get rid of residual oil, and filter the oil through filtering component, further guarantee to obtain the quality of sample, guarantee the accuracy and the validity of sample analysis result.

In order to achieve the purpose, the technical scheme of the utility model is realized as follows:

a self-sealing type self-filtering sampler comprises a bottle body, a sampling mechanism and a sample conveying mechanism, wherein a bottle cap is arranged on the bottle body, a sealing support assembly is arranged on the outer side of the bottle cap, a movable sealing assembly is arranged on the sealing support assembly, and the movable sealing assembly is matched with the bottle body; the sampling mechanism comprises a sampling needle and a sampling head, the sampling head is arranged on the bottle cap and is connected with the sealing support assembly, the sampling needle is positioned in the sampling head, and the sampling needle penetrates through the sampling head and the self-sealing pad in the bottle body to be communicated with the bottle body; the sample conveying mechanism comprises a valve body, a filtering component and a cleaning component, the valve body is communicated with the infusion tube and the sampling needle respectively, the filtering component and the cleaning component are both installed in the valve body, the filtering component is matched with the infusion tube, and the cleaning component is matched with the sampling needle.

Further, sealed supporting component includes the guard shield, and the guard shield is installed on the bottle lid and guard shield and bottle phase-match, and movable seal subassembly installs on the guard shield.

Furthermore, the movable sealing assembly comprises a self-locking hook, the self-locking hook is rotatably connected with a mounting seat arranged on the outer side of the protective cover, the upper end of the self-locking hook is elastically connected with the protective cover through an adjusting spring, and the lower end of the self-locking hook penetrates through a notch on the protective cover and is movably arranged on a limiting boss on the bottle body.

Furthermore, the self-sealing gasket is composed of two groups of diaphragms, the two groups of diaphragms are movably connected, a through hole is formed between the two groups of diaphragms, and the through hole is matched with the sampling needle.

Further, a connecting groove is formed in the inner side of the bottle cap, a connecting clamping edge is arranged on the outer side of the bottle opening of the bottle body, and the connecting clamping edge is arranged in the connecting groove; the sampling head is respectively clamped with the bottle cap and the protective cover, an adsorption cavity is arranged on the sampling head, the adsorption cavity is communicated with the bottle body, and an adsorption port is arranged on the adsorption cavity.

Furthermore, a liquid inlet channel and a liquid outlet channel are arranged on two sides of the valve body, an outlet is arranged at the lower end of the valve body, the liquid inlet channel and the liquid outlet channel are both communicated with the infusion tube, the liquid inlet channel and the liquid outlet channel are both matched with the filtering component, and the outlet corresponds to the sampling head.

Furthermore, an adjusting assembly is arranged at the upper end of the valve body, the adjusting assembly comprises an adjusting rod, the adjusting rod sequentially penetrates through and is installed in an adjusting seat, a rotating support, a connecting seat and a protecting seat which are installed at the upper end of the valve body, and the adjusting rod is communicated with an outlet of the valve body in an openable and closable manner through the rotating support; the cleaning component is arranged between the connecting seat and the protective seat and corresponds to the cleaning channel in the adjusting rod.

Further, the cleaning assembly comprises a blowing interface, the blowing interface corresponds to the cleaning channel, and cleaning gas is introduced into the blowing interface; a compensation type sealing ring is arranged in the connecting seat, a protection pad is arranged in the protection seat, and the compensation type sealing ring and the protection pad are matched with the adjusting rod.

Furthermore, the upper end of the adjusting rod is provided with a return spring, the return spring is positioned in the adjusting seat, and two ends of the return spring are respectively connected with the adjusting rod and a connecting screw rod at the top of the adjusting seat through connecting plates; be provided with rotatory hand wheel on the rotatory support, rotatory hand wheel is connected with the rotatory support through the rotation axis, and the rotation axis cooperatees with adjusting the pole and rotatory gear cooperatees with reset spring through rotatory gear, and the rotation axis cooperatees with the stopper in the rotatory support, is provided with the spacing groove on the stopper, and the gag lever post on the rotation axis is located the spacing groove, and the rotation axis activity sets up in the sleeve of rotatory support and the gag lever post cooperatees with the sleeve.

Further, a sealing table is arranged at the lower end part of the adjusting rod and communicated with the cleaning channel, the sealing table is matched with the outlet, and at least one layer of sealing gasket is arranged on the sealing table; the cleaning assembly comprises a support frame, the support frame is respectively arranged on the liquid inlet channel and the liquid outlet channel, and at least one layer of filter screen is arranged on the support frame.

The utility model has the beneficial effects that:

1. the bottle cap has compact integral structure design and simple operation, when in use, the protective cover is opened and buckled on the bottle body only by pulling the self-locking hook, and the bottle cap is matched and firmly clamped on the bottle body under the compression action of the adjusting spring, so that the connection stability between the bottle cap and the bottle body is greatly improved.

2. The utility model can realize the installation of sampling bottles which can be replaced to meet different volumes under different working condition requirements by utilizing the opening or buckling of the self-locking hook and the adjusting spring to adjust the protective cover and the bottle cover, has quick installation and small stroke, adopts the self-sealing gasket formed by combining two groups of membranes and can be repeatedly and frequently used, and adopts the coaxial large-caliber sampling needle in the sampling needle to adapt to sampling under different working conditions.

3. Before sampling, the sampling head and the sampling bottle are assembled, then the sampling head is arranged at the lower part of the valve body, liquid flows into the valve body after being preliminarily filtered by the filter screen on the valve body, then the liquid flows into the sampling needle from the outlet, and the liquid in the sampling needle flows into the sampling bottle again, so that the filtered liquid is quickly sampled, the whole installation is quick, and the sampling is simple.

4. When sampling is finished, the rotating hand wheel is pulled out outwards, the rotating hand wheel drives the rotating shaft to move outwards to leave the limiting block, the rotating shaft is in a self-locking state, then a worker drives the rotating gear on the rotating shaft to rotate by rotating the rotating hand wheel, the rotating gear is meshed with the adjusting rod to drive the adjusting rod to move downwards to block an outlet in the valve body, meanwhile, the reset spring on the upper portion of the adjusting rod limits the adjusting rod to ensure that the adjusting rod descends stably, then, nitrogen is introduced into the purging port through the air inlet channel to purge the sampling needle, residual samples in the sampling needle are removed, and the influence on the samples in the next sampling is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a front view of the vial and sampling mechanism of the present invention.

Fig. 2 is a schematic view showing an initial state of the self-sealing pad according to the present invention.

FIG. 3 is a schematic view showing the state of the self-sealing gasket in the present invention.

Fig. 4 is a cross-sectional view of a sample transport mechanism of the present invention.

In the figure, 1-bottle body, 2-bottle cap, 201-shield, 202-self-locking hook, 203-adjusting spring, 3-sampling needle, 4-sampling head, 401-adsorption port, 5-valve body, 501-adjusting rod, 502-adjusting seat, 503-rotating support, 504-connecting seat, 505-protecting seat, 506-blowing interface, 507-compensation sealing ring, 508-protecting pad, 509-reset spring, 510-rotating hand wheel, 511-rotating gear, 512-sealing pad, 513-supporting frame, 514-filter screen, and 6-self-sealing pad.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.

A self-sealing type self-filtering sampler, as shown in figure 1, comprises a bottle body 1, a sampling mechanism and a sample delivery mechanism, wherein a bottle cap 2 is arranged on the bottle body 1, a sealing support component is arranged on the outer side of the bottle cap 2, a movable sealing component is arranged on the sealing support component, and the movable sealing component is matched with the bottle body 1; the sampling mechanism comprises a sampling needle 3 and a sampling head 4, the sampling head 4 is arranged on the bottle cap 2, the sampling head 4 is connected with the sealing support component, the sampling needle 3 is positioned in the sampling head 4, and the sampling needle 3 penetrates through the sampling head 4 and the self-sealing pad 6 in the bottle body 1 to be communicated with the bottle body 1; the sample conveying mechanism comprises a valve body 5, a filtering component and a cleaning component, wherein the valve body 5 is respectively communicated with the infusion tube and the sampling needle 3, the filtering component and the cleaning component are both installed in the valve body 5, the filtering component is matched with the infusion tube, and the cleaning component is matched with the sampling needle 3. When sampling an oil sample, firstly, installing the upper end part of a sampling head 4 on a valve body 5, wherein a filtering component and a cleaning component both correspond to a sampling needle 3 in the sampling head 4; secondly, the infusion tube is connected to the valve body 5, so that the infusion tube is communicated with the sampling needle 3; thirdly, the movable sealing assembly is opened according to the volume of the bottle body 1, and the movable sealing assembly and the sealing support assembly are arranged on the bottle body 1, so that sealing of the bottle bodies 1 with different volumes is guaranteed, the installation is convenient, and the efficiency is high; thirdly, the sampling head 4 penetrates through the sealing support assembly and the bottle cap 2, the sampling head 4 is communicated with the bottle body 1, the connection tightness of the sampling head 4 and the bottle body 1 is ensured, and the quality of a sampled sample is ensured; thirdly, the sampling needle 3 is communicated with the bottle body 1, at the moment, the oil liquid sample in the infusion tube firstly flows through the filtering component for filtering, the quality of the obtained sample is ensured, and then flows through the sampling needle 3 through the valve body 5 to enter the bottle body 1, so that the oil liquid sample is sampled, the operation is convenient, and the sampling efficiency is high; finally, after the sampling is completed, the sampling head 4 is taken down, the sampling needle 3 is not communicated with the bottle body 1 any more, the cleaning assembly is used for cleaning the sampling needle 3 and the valve body 5, residual oil is effectively removed, and the accuracy and the effectiveness of a sampling analysis result are ensured.

Further, as shown in fig. 1, the sealing support assembly includes a shield 201, the shield 201 is mounted on the bottle cap 2 and is matched with the bottle body 1, and the movable sealing assembly is mounted on the shield 201. Before taking a sample, according to the volume of bottle 1, use movable seal assembly to open suitable yardstick with guard shield 201 and install guard shield 201 on bottle 1, guard shield 201 is stably connected with bottle 1 under movable seal assembly's sealed fixed action, leakproofness when guaranteeing the sample, and when changing not unidimensional bottle 1 as required, it is also more convenient to install, and efficiency is higher.

Specifically, in this embodiment, as shown in fig. 1, the movable sealing assembly includes a self-locking hook 202, the self-locking hook 202 is rotatably connected to the outer side of the shield 201 by a mounting seat, the upper end of the self-locking hook 202 is elastically connected to the shield 201 by an adjusting spring 203, and the lower end of the self-locking hook 202 passes through a notch on the shield 201 and is movably disposed on a limiting boss on the bottle body 1. Firstly, when the protective cover 201 needs to be installed on the bottle body 1, the adjusting spring 203 is installed through the self-locking hook 202, the self-locking hook 202 rotates around the installation seat, at the moment, the lower end of the self-locking hook 202 drives the side edge of the protective cover 201 to move outwards, the caliber of the protective cover 201 is enlarged, the caliber of the protective cover 201 is larger than that of the bottle body 1, and the protective cover 201 is convenient to install; secondly, install guard shield 201 on bottle 1 after, loosen self-locking couple 202, self-locking couple 202 restores to the original state under the effect of adjusting spring 203, at this moment, the lower extreme of self-locking couple 202 drives the side inward movement of guard shield 201, guard shield 201 plays the effect of sealed bottle 1, and the lower extreme of self-locking couple 202 obtains supporting through spacing boss, guarantees guard shield 201 and self-locking couple 202 and bottle 1's stability of being connected, further guarantees the leakproofness of bottle 1 when the sample.

Further, as shown in fig. 1, the self-sealing gasket 6 is composed of two sets of diaphragms, as shown in fig. 2, the two sets of diaphragms are movably connected, and a through hole is arranged between the two sets of diaphragms and matched with the sampling needle 3. Firstly, before sampling, the self-sealing pad 6 plays a role in sealing the bottle opening of the bottle body 1, so that the cleanliness in the bottle body 1 is ensured, and the bottle body 1 is prevented from being polluted; secondly, when the sampling, when sampling needle 3 got into bottle 1, as shown in fig. 3, two sets of diaphragms are backed up to the tip of sampling needle 3, sample in getting into bottle 1 through the through-hole, self sealedly fill up 6 and realize proclaiming oneself under self elastic action, like this, can guarantee that sampling needle 3 carries out airtight sampling in not damaging self-sealing pad 6 gets into bottle 1, can guarantee again that self-sealing pad 6 repeatedly usable, simultaneously, the large-bore sampling needle 3 of facilitate the use samples.

It should be noted that, in this embodiment, as shown in fig. 1, a connection groove is disposed on the inner side of the bottle cap 2, a connection clamping edge is disposed on the outer side of the bottle mouth of the bottle body 1, and the connection clamping edge is disposed in the connection groove, so that the connection stability and the sealing performance of the bottle cap 2 and the bottle body 1 are ensured by the effective clamping connection of the connection clamping edge and the connection groove; sampling head 4 is connected with bottle lid 2 and guard shield 201 looks joint respectively, is provided with the absorption chamber on the sampling head 4, and the absorption chamber is linked together with bottle 1, is provided with on the absorption chamber and adsorbs mouth 401, and the air passes through absorption mouth 401 business turn over and adsorbs the chamber, and the uniformity of inside and outside atmospheric pressure when guaranteeing the sample makes things convenient for the sample.

Further, as shown in fig. 4, a liquid inlet channel and a liquid outlet channel are arranged on two sides of the valve body 5, an outlet is arranged at the lower end of the valve body 5, the liquid inlet channel and the liquid outlet channel are both communicated with the infusion tube and are both matched with the filtering component, and the outlet corresponds to the sampling head 4. When sampling, the fluid sample flows into valve body 5 through transfer line and inlet channel, filters and gets into bottle 1 through sampling needle 3 through filtering component, and the fluid that does not get into in the bottle 1 gets into the transfer line through outlet channel and filtering component and flows out, and the fluid sample in the transfer line all flows through filtering component and filters before getting into bottle 1 and before flowing out, guarantees to obtain the quality of sample, further guarantees the accuracy and the validity of sample analysis result.

Further, as shown in fig. 4, an adjusting assembly is arranged at the upper end of the valve body 5, the adjusting assembly includes an adjusting rod 501, the adjusting rod 501 sequentially passes through and is installed in an adjusting seat 502, a rotating support 503, a connecting seat 504 and a protecting seat 505 which are installed at the upper end of the valve body 5, respectively, and the adjusting rod 501 is in openable and closable communication with the outlet of the valve body 5 through the rotating support 503; the cleaning assembly is disposed between the connection seat 504 and the protection seat 505 and corresponds to the cleaning passage in the adjustment lever 501. After accomplishing the sample, need clear away the remaining fluid in the valve body 5 and the sampling needle 3, at this moment, use rotatory support 503 to adjust the regulation of the height of adjusting lever 501, it is corresponding with the export of valve body 5 to make the regulation pole 501 tip, it is corresponding with the clean passageway of adjusting in the pole 501 to guarantee clean subassembly, at this moment, it cleans the sampling needle 3 of export intercommunication to use clean subassembly through clean passageway, and clean in the valve body 5, get rid of remaining fluid, guarantee to obtain the quality of sample, guarantee the accuracy and the validity of sample analysis result.

Further, as shown in fig. 4, the cleaning assembly includes a blowing interface 506, the blowing interface 506 corresponds to the cleaning channel, and the cleaning gas is introduced into the blowing interface 506; a compensation type sealing ring 507 is arranged in the connecting seat 504, a protection pad 508 is arranged in the protection seat 505, and the compensation type sealing ring 507 and the protection pad 508 are matched with the adjusting rod 501. When cleaning, clean gas is introduced into the cleaning channel by using the blowing interface 506, the cleaning gas cleans the sampling needle 3 and the valve body 5 through the cleaning channel, the compensation type sealing ring 507 ensures the matching tightness of the connecting seat 504 and the adjusting rod 501, and the protection pad 508 ensures the matching tightness of the protection seat 505 and the adjusting rod 501.

It is noted that, in the present embodiment, the cleaning gas is nitrogen, and in other embodiments of the present invention, other inert gases may be used.

Further, as shown in fig. 4, a return spring 509 is arranged at the upper end of the adjusting rod 501, the return spring 509 is located in the adjusting seat 502, and both ends of the return spring 509 are respectively connected with the adjusting rod 501 and the connecting screw rod at the top of the adjusting seat 502 through connecting plates; the rotating support 503 is provided with a rotating hand wheel 510, the rotating hand wheel 510 is connected with the rotating support 503 through a rotating shaft, the rotating shaft is matched with the adjusting rod 501 through a rotating gear 511, the rotating gear 511 is matched with a reset spring 509, the rotating shaft is matched with a limiting block in the rotating support 503, the limiting block is provided with a limiting groove, a limiting rod on the rotating shaft is located in the limiting groove, the rotating shaft is movably arranged in a sleeve of the rotating support 503, and the limiting rod is matched with the sleeve. When cleaning is performed, firstly, the rotating hand wheel 501 is pulled, the rotating shaft on the rotating hand wheel 501 moves to be separated from the limiting block, at the moment, the rotating hand wheel 501 is rotated to release the self-locking state, the rotating hand wheel 501 rotates, the rotating shaft rotates and is matched with the adjusting rod 501 through the rotating gear 511, and the adjusting rod 501 moves downwards; secondly, when the adjusting rod 501 moves downwards, the return spring 509 has an upward pulling force on the adjusting rod 501, so that the stability of the downward movement of the adjusting rod 501 is ensured; thirdly, nitrogen is introduced into the air blowing interface 506 and is blown into the sampling needle 3 through the cleaning channel to carry out blowing treatment, so that residual samples in the sampling needle 3 are removed, and the influence on the samples in the next sampling is reduced; when cleaning is completed, the rotating hand wheel 510 is rotated, the adjusting rod 501 is adjusted to the original position under the pulling of the return spring 509, the rotating hand wheel 510 is pressed, the rotating shaft moves inwards, the limiting rod on the rotating shaft is clamped in the limiting groove on the limiting block and keeps static in the sleeve.

Further, a sealing table is arranged at the lower end part of the adjusting rod 501, the sealing table is communicated with the cleaning channel and matched with the outlet, and at least one layer of sealing gasket 512 is arranged on the sealing table; the cleaning assembly comprises a support frame 513, the support frame 513 is respectively arranged on the liquid inlet channel and the liquid outlet channel, and at least one layer of filter screen 514 is arranged on the support frame 513.

In this embodiment, after the lower end of the adjusting rod 501 is kept in contact with the outlet, the sealing pad 512 on the sealing table effectively seals the outlet, so that the clean gas can effectively clean the sampling needle 3 and the valve body 5, and the filter screen 514 on the supporting frame 513 filters the oil sample, so that the quality of the obtained sample is ensured, and the accuracy and effectiveness of the sampling analysis result are further ensured.

It should be noted that, in this embodiment, the sealing pad 512 is a layer, and the filter screen 514 is a layer, in other embodiments of the present invention, the number of layers of the sealing pad 512 and the filter screen 514 may be set to other number of layers as long as the sealing effect and the filtering effect are ensured.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. A self-sealing type self-filtering sampler comprises a bottle body (1), a sampling mechanism and a sample conveying mechanism, and is characterized in that a bottle cap (2) is arranged on the bottle body (1), a sealing support component is arranged on the outer side of the bottle cap (2), a movable sealing component is arranged on the sealing support component, and the movable sealing component is matched with the bottle body (1); the sampling mechanism comprises a sampling needle (3) and a sampling head (4), the sampling head (4) is installed on the bottle cap (2), the sampling head (4) is connected with the sealing support assembly, the sampling needle (3) is located in the sampling head (4), and the sampling needle (3) penetrates through the sampling head (4) and a self-sealing gasket (6) in the bottle body (1) to be communicated with the bottle body (1); the sample conveying mechanism comprises a valve body (5), a filtering component and a cleaning component, wherein the valve body (5) is respectively communicated with a liquid conveying pipe and a sampling needle (3), the filtering component and the cleaning component are both installed in the valve body (5), the filtering component is matched with the liquid conveying pipe, and the cleaning component is matched with the sampling needle (3).

2. The self-sealing, self-filtering sampler according to claim 1, wherein the seal support assembly comprises a shield (201), the shield (201) being mounted on the cap (2) and matching the shield (201) with the vial (1), the movable seal assembly being mounted on the shield (201).

3. The self-sealing self-filtering sampler according to claim 2, wherein the movable sealing assembly comprises a self-locking hook (202), the self-locking hook (202) is rotatably connected with a mounting seat arranged on the outer side of the protective cover (201), the upper end of the self-locking hook (202) is elastically connected with the protective cover (201) through an adjusting spring (203), and the lower end of the self-locking hook (202) passes through a notch on the protective cover (201) and is movably arranged on a limiting boss on the bottle body (1).

4. Self-sealing self-filtering sampler according to claim 1, 2 or 3, characterised in that the self-sealing gasket (6) consists of two groups of membranes which are movably connected and between which there is a through hole which is matched with the sampling needle (3).

5. The self-sealing self-filtering sampler according to claim 4, wherein the inner side of the bottle cap (2) is provided with a connecting groove, the outer side of the bottle mouth of the bottle body (1) is provided with a connecting clamping edge, and the connecting clamping edge is arranged in the connecting groove; sampling head (4) respectively with bottle lid (2) and guard shield (201) looks joint, be provided with the absorption chamber on sampling head (4), the absorption chamber is linked together with bottle (1), is provided with on the absorption chamber and adsorbs mouth (401).

6. The self-sealing self-filtering sampler according to claim 1, 2, 3 or 5, wherein the valve body (5) is provided with a liquid inlet channel and a liquid outlet channel at two sides, the lower end of the valve body (5) is provided with an outlet, the liquid inlet channel and the liquid outlet channel are both communicated with the liquid conveying pipe and are both matched with the filtering component, and the outlet corresponds to the sampling head (4).

7. The self-sealing type self-filtering sampler according to claim 6, wherein the upper end of the valve body (5) is provided with an adjusting assembly, the adjusting assembly comprises an adjusting rod (501), the adjusting rod (501) sequentially passes through and is installed in an adjusting seat (502), a rotating support (503), a connecting seat (504) and a protecting seat (505) which are installed at the upper end of the valve body (5), and the adjusting rod (501) is in open-close communication with the outlet of the valve body (5) through the rotating support (503); the cleaning component is arranged between the connecting seat (504) and the protecting seat (505) and corresponds to the cleaning channel in the adjusting rod (501).

8. The self-sealing self-filtering sampler of claim 7, wherein the cleaning assembly comprises a blowing interface (506), the blowing interface (506) corresponds to the cleaning channel, and cleaning gas is introduced into the blowing interface (506); a compensation type sealing ring (507) is arranged in the connecting seat (504), a protection pad (508) is arranged in the protection seat (505), and the compensation type sealing ring (507) and the protection pad (508) are matched with the adjusting rod (501).

9. The self-sealing type self-filtering sampler according to claim 8, wherein the upper end of the adjusting rod (501) is provided with a return spring (509), the return spring (509) is positioned in the adjusting seat (502), and both ends of the return spring (509) are respectively connected with the connecting screw rods at the tops of the adjusting rod (501) and the adjusting seat (502) through connecting plates; be provided with rotatory hand wheel (510) on rotatory support (503), rotatory hand wheel (510) are connected with rotatory support (503) through the rotation axis, and the rotation axis cooperatees with regulation pole (501) and rotating gear (511) and reset spring (509) through rotating gear (511), and the rotation axis cooperatees with the stopper in rotatory support (503), be provided with the spacing groove on the stopper, the gag lever post on the rotation axis is located the spacing groove, and the rotation axis activity sets up in the sleeve of rotatory support (503) and the gag lever post cooperatees with the sleeve.

10. Self-sealing self-filtering sampler according to claim 7, 8 or 9, characterised in that the lower end of the regulating rod (501) is provided with a sealing table, which communicates with the cleaning channel and cooperates with the outlet, on which at least one layer of sealing gasket (512) is arranged; the cleaning assembly comprises a support frame (513), the support frame (513) is respectively arranged on the liquid inlet channel and the liquid outlet channel, and at least one layer of filter screen (514) is arranged on the support frame (513).