CN216410757U

CN216410757U - Self-filtering type quick sampling device

Info

Publication number: CN216410757U
Application number: CN202122963990.7U
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: 2021-11-30
Filing date: 2021-11-30
Publication date: 2022-04-29
Anticipated expiration: 2031-11-30

Abstract

The utility model provides a self-filtering type rapid sampling device, 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 product sampling bottle are complicated, and the next sampling analysis result is influenced due to the fact that oil liquid remains after sampling. According to the utility model, the sampling needle on the sampling mechanism is matched with the reset component on the sampling head and the sealed exhaust component on the connecting sleeve, so that the oil product is quickly sampled, the operation is simple, the sealing performance is good, the quality and the sampling efficiency of the obtained sample are ensured, meanwhile, the valve body and the sampling head which are introduced into the oil product are effectively cleaned through the cleaning component before and after the sampling is completed, the residual oil is removed, the oil product is filtered through the filtering component, the quality of the obtained sample is further ensured, and the accuracy and the effectiveness of the sampling analysis result are ensured.

Description

Self-filtering type quick sampling device

Technical Field

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

Background

Oil sampler mainly used adopts transparent colour's sampling bottle when traditional fluid sample is taken a sample, colour and the impurity degree of change that can the visual observation fluid, but is very loaded down with trivial details when the sample, needs other sampling device combination uses to whole assembly and disassembly is loaded down with trivial details, and sampling efficiency is low, and staff's sampling task is heavy, can not satisfy daily demand to fluid sample detection far away.

In addition, the safety of an oil analysis and test environment can be ensured by sampling through the oil sampler, and the artificial pollution such as dust, impurities, water vapor and the like generated in the process of extracting an oil sample 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 sampling efficiency caused by complicated integral assembly and disassembly and influence on the next sampling analysis result caused by residual oil after sampling of the existing oil sampling bottle, the utility model provides a self-filtering type quick sampling device, which is used for quickly sampling an oil product by matching a sampling needle on a sampling mechanism with a reset component on a sampling head and a sealed exhaust component on a connecting sleeve, is simple to operate, has good sealing property, ensures the quality and the sampling efficiency of the obtained sample, effectively cleans a valve body and the sampling head which are introduced into the oil product by a cleaning component before and after sampling is finished, removes the residual oil, filters the oil product by the filtering component, further ensures the quality of the obtained sample, and ensures the accuracy and the validity of the sampling analysis result.

In order to achieve the purpose, the technical scheme of the utility model is realized as follows: a self-filtering type rapid sampling device comprises a bottle body, a sampling mechanism and a sample conveying mechanism, wherein a connecting sleeve is arranged on the bottle body, the connecting sleeve is communicated with the bottle body, and a sealing exhaust assembly is arranged in the connecting sleeve; the sampling mechanism comprises a sampling needle, a sampling head and a resetting component, the sampling head is arranged on the connecting sleeve, the sampling needle is positioned in the sampling head, the resetting component is arranged on the sampling head, and the sampling needle penetrates through the sampling head and is communicated with the bottle body through the resetting component and the sealed exhaust component; 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.

Furthermore, the sealed exhaust assembly comprises a sampling column, the sampling column is positioned in the connecting sleeve, a first spring ring is arranged between the sampling column and the connecting sleeve, the upper end of the sampling column is provided with a limiting head, the limiting head is matched with the first spring ring, and the limiting head corresponds to the reset assembly; the lower end of the sampling column is provided with a limiting boss which is matched with an exhaust component of the connecting sleeve; a through hole is formed between the sampling column and the limiting boss, and a sealing gasket I is arranged between the through hole and the inner wall of the connecting sleeve.

Further, the exhaust assembly comprises at least two exhaust channels, the exhaust channels are symmetrically arranged on the connecting sleeve in the inner and outer directions, the exhaust channels are communicated with the bottle body through an exhaust cavity in the connecting sleeve, and the limiting boss is located between the exhaust cavity and the bottle body.

Furthermore, an adsorption cavity is arranged on the sampling head, the adsorption cavity is communicated with the exhaust channel on the connecting sleeve, and an adsorption port is arranged on the adsorption cavity.

Furthermore, the reset assembly comprises a second spring ring and a pushing boss, the second spring ring is positioned in the adsorption cavity and matched with the connecting sleeve, a second sealing ring is arranged below the second spring ring, and the second sealing ring is positioned in a sealing groove in the outer wall of the connecting sleeve; promote the boss and set up on the sampling needle, promote the boss and the spacing head phase-match of sampling post, the below of promoting the boss is provided with first sealing washer, the inner wall phase-match of first sealing washer and sampling post.

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; the connecting seat is internally provided with a compensation sealing ring, the protection seat is internally provided with a protection pad, and the compensation 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 II 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 sampling device is compact in overall structural design and simple to operate, only the sampling assembly is required to be buckled on the bottle body connecting sleeve, the connecting sleeve jacks up the second spring ring to enable the sampling needle to quickly and accurately penetrate into the sampling column, the pushing boss on the sampling needle pushes the sampling column to stably move downwards under the action of the first spring ring, the through hole on the sampling needle is communicated with the bottle body, a sample quickly flows into the bottle body through the sampling needle and the through hole, the limiting boss on the lower portion of the sampling column moves downwards, air in the bottle body is finally discharged outwards through the adsorption port after passing through the exhaust cavity, the exhaust channel and the adsorption cavity, the overall sampling efficiency is high, and the safety is high; after the sample, when getting the sampling head, the sampling head upwards plays fast under the effect of second spring coil and resets, utilizes the sampling post to upwards reset under the effect of first spring coil and realizes self sealedly handling to the bottle.

2. Before sampling, the sampling head and the sampling bottle are assembled, then the sampling head is installed 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.

3. 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 bottle body and the connecting sleeve of the present invention.

Fig. 2 is a plan view of the bottle body and the connecting sleeve of the present invention.

FIG. 3 is a schematic structural diagram of a sampling mechanism according to 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-connecting sleeve, 201-sampling column, 202-first spring ring, 203-limiting boss, 204-through hole, 205-sealing gasket I, 206-exhaust channel, 207-exhaust cavity, 3-sampling needle, 4-sampling head, 401-adsorption port, 402-second spring ring, 403-pushing boss, 404-second sealing ring, 5-valve body, 501-adjusting rod, 502-adjusting seat, 503-rotating support, 504-connecting seat, 505-protecting seat, 506-blowing interface, 507-compensating sealing ring, 508-protecting pad, 509-restoring spring, 510-rotating hand wheel, 511-rotating gear, 512-sealing gasket II, 513-supporting frame, 514-filter screen.

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-filtering type rapid sampling device is shown in figure 1 and comprises a bottle body 1, a sampling mechanism and a sample conveying mechanism, wherein a connecting sleeve 2 is arranged on the bottle body 1, the connecting sleeve 2 is communicated with the bottle body 1, and a sealing exhaust assembly is arranged in the connecting sleeve 2; as shown in fig. 3, the sampling mechanism comprises a sampling needle 3, a sampling head 4 and a resetting component, the sampling head 4 is installed on the connecting sleeve 2, the sampling needle 3 is positioned in the sampling head 4, the resetting component is installed on the sampling head 4, and the sampling needle 3 passes through the sampling head 4 and is communicated with the bottle body 1 through the resetting component and the sealed exhaust component; as shown in fig. 4, the sample delivery mechanism comprises a valve body 5, a filtering component and a cleaning component, 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 arranged 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 sampling head 4 is arranged on the connecting sleeve 2, the sampling head 4 is butted with the sealed exhaust component on the connecting sleeve, the connection tightness of the sampling head 4 and the connecting sleeve 2 is ensured, and the quality of the sampled sample is ensured; thirdly, the sampling head 4 is pressed to enable the reset assembly to be separated from the original position, the sampling needle 3 is communicated with the bottle body 1, at the moment, an oil sample in the infusion tube firstly flows through the filtering assembly to be filtered, 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 sampling of the oil sample is realized, the operation is convenient, and the sampling efficiency is high; finally, after the sample was accomplished, loosen sampling head 4, reset assembly realized reseing, and sampling needle 3 no longer communicates with bottle 1, accomplishes the sample, takes off sampling head 4, uses clean subassembly to clean in sampling needle 3 and the valve body 5, effectively gets rid of residual oil liquid, guarantees the accuracy and the validity of sample analysis result.

Further, as shown in fig. 1, the sealed exhaust assembly includes a sampling column 201, the sampling column 201 is located in the connecting sleeve 2, a first spring ring 202 is arranged between the sampling column 201 and the connecting sleeve 2, a limiting head is arranged at the upper end of the sampling column 201, the limiting head is matched with the first spring ring 202, and the limiting head corresponds to the reset assembly; the lower end of the sampling column 201 is provided with a limiting boss 203, and the limiting boss 203 is matched with an exhaust component of the connecting sleeve 2; a through hole 204 is arranged between the sampling column 201 and the limiting boss 203, and a sealing gasket I205 is arranged between the through hole 204 and the inner wall of the connecting sleeve 2. Specifically, as shown in fig. 2, the exhaust assembly includes at least two exhaust channels 206, the exhaust channels 206 are symmetrically arranged on the connecting sleeve 2, the exhaust channels 206 are communicated with the bottle body 1 through an exhaust cavity 207 in the connecting sleeve 2, and the limiting boss 203 is located between the exhaust cavity 207 and the bottle body 1.

In this embodiment, as shown in fig. 1 and 3, when sampling an oil sample, the sampling head 4 is mounted on the connection sleeve 2, the sampling head 4 corresponds to the limiting head on the sampling column 201, when the sampling head 4 is pressed downward to perform sampling, the sampling head 4 has a downward pressure on the limiting head, the limiting head pushes the first spring ring 202 and the sampling column 201 to move downward, the first spring ring 202 is compressed, the sampling column 201 drives the limiting boss 203 to move downward, the limiting boss 203 is far away from the connection sleeve 2, at this time, the exhaust cavity 207 is opened, as shown in fig. 2, air outside the bottle enters the bottle body 1 through the exhaust channel 206 and the exhaust cavity 207, the through hole 204 shielded by the sealing gasket I205 moves downward and then communicates with the bottle body 1, the oil sample inside the sampling needle 3 smoothly enters the bottle body 1 through the through hole 204 to complete rapid sampling, the exhaust cavity 207 and the exhaust channel 206 can ensure that the air pressure inside and outside the bottle body 1 is consistent, thereby ensuring that the oil sample can smoothly enter the bottle body 1; after the sample of fluid sample was accomplished, loose sampling head 4, sampling head 4 accomplishes under the effect of subassembly that resets and resets, and spacing head up motion under the effect of the resilience elasticity of first spring coil 202, sampling post 201 and spacing boss 203 all accomplish and reset, through-hole 204 is sheltered from by sealed pad I205 once more, exhaust chamber 207 is sealed by spacing boss 203 once more, and like this, whole bottle 1 has just been accomplished inclosed, the leakproofness of fluid sample has been improved, guarantee the accuracy and the validity of sample analysis result.

It should be noted that, in the present embodiment, as shown in fig. 2, the number of the exhaust passages 206 is three, and in other embodiments of the present invention, other numbers of the exhaust passages 206 may be provided.

Further, as shown in fig. 3, an adsorption cavity is arranged on the sampling head 4, the adsorption cavity is communicated with the exhaust passage 206 on the connecting sleeve 2, and an adsorption port 401 is arranged on the adsorption cavity. When the sampling head 4 is installed on the connection sleeve 2, the adsorption cavity is communicated with the exhaust channel 206 on the connection sleeve 2, and air is ensured to enter the exhaust channel 206 through the adsorption port 401.

Further, as shown in fig. 3, the resetting assembly includes a second spring ring 402 and a pushing boss 403, the second spring ring 402 is located in the adsorption cavity, the second spring ring 402 is matched with the connecting sleeve 2, a second sealing ring 404 is arranged below the second spring ring 402, and the second sealing ring 404 is located in a sealing groove on the outer wall of the connecting sleeve 2; promote boss 403 to set up on sampling needle 3, promote the spacing head phase-match of boss 403 and sampling post 201, the below of promoting boss 403 is provided with first sealing washer, the inner wall phase-match of first sealing washer and sampling post 201.

Specifically, when the sampling head 4 is installed on the connecting sleeve 2 and is pressed downwards, the second spring ring 402 is compressed, the boss 403 is pushed to move downwards to press the limiting head of the sampling column 201 to move downwards, at the moment, an oil sample enters the bottle body 1 through the sampling needle 3, the second sealing ring 404 below the second spring ring 402 is located in the sealing groove in the outer wall of the connecting sleeve 2, the sealing performance between the sampling head 4 and the connecting sleeve 2 is guaranteed, the first sealing ring arranged below the boss 403 is pushed to be effectively matched with the inner wall of the sampling column 201, the sealing performance between the boss 403 and the inner wall of the sampling column 201 is guaranteed, the sealing performance during oil sample sampling is effectively improved through the second sealing ring 404 and the first sealing ring, and the accuracy and effectiveness of sampling analysis results are guaranteed.

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 the subassembly, does not get into fluid business turn over liquid passage and filter assembly in the bottle 1 and get into the transfer line and flow out, and the fluid sample in the transfer line all flows through filter assembly and filters before getting into bottle 1 and 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 compensating sealing ring 507 is arranged in the connecting seat 504, a protection pad 508 is arranged in the protection seat 505, and the compensating 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 sealing performance of the connection seat 504 and the adjustment rod 501 in matching is ensured by the compensation sealing ring 507, and the sealing performance of the protection seat 505 and the adjustment rod 501 in matching is ensured by the protection pad 508.

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 II512 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.

After the lower tip of adjusting pole 501 keeps contacting with the export, sealed pad II512 on the sealing bench carries out effective sealing to the export, guarantees that clean gas is to the effective cleanness in sampling needle 3 and the valve body 5, and filter screen 514 on the support frame 513 filters the fluid sample, guarantees the quality of getting the sample, further guarantees the accuracy and the validity of sample analysis result.

It should be noted that, in this embodiment, the sealing pad II512 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 II512 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-filtering type rapid sampling device comprises a bottle body (1), a sampling mechanism and a sample conveying mechanism, and is characterized in that a connecting sleeve (2) is arranged on the bottle body (1), the connecting sleeve (2) is communicated with the bottle body (1), and a sealing exhaust assembly is arranged in the connecting sleeve (2); the sampling mechanism comprises a sampling needle (3), a sampling head (4) and a resetting component, the sampling head (4) is installed on the connecting sleeve (2), the sampling needle (3) is located in the sampling head (4), the resetting component is installed on the sampling head (4), and the sampling needle (3) penetrates through the sampling head (4) and is communicated with the bottle body (1) through the resetting component and the sealed exhaust component; 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-filtering rapid sampling device according to claim 1, wherein the sealed exhaust assembly comprises a sampling column (201), the sampling column (201) is located in the connecting sleeve (2), a first spring ring (202) is arranged between the sampling column (201) and the connecting sleeve (2), a limiting head is arranged at the upper end of the sampling column (201), the limiting head is matched with the first spring ring (202), and the limiting head corresponds to the resetting assembly; the lower end of the sampling column (201) is provided with a limiting boss (203), and the limiting boss (203) is matched with an exhaust component of the connecting sleeve (2); be provided with through-hole (204) between sampling post (201) and spacing boss (203), be provided with sealed pad I (205) between through-hole (204) and adapter sleeve (2) inner wall.

3. The self-filtering rapid sampling device according to claim 2, wherein the exhaust assembly comprises at least two exhaust channels (206), the exhaust channels (206) are symmetrically arranged on the connecting sleeve (2) inside and outside, the exhaust channels (206) are communicated with the bottle body (1) through an exhaust cavity (207) in the connecting sleeve (2), and the limiting boss (203) is located between the exhaust cavity (207) and the bottle body (1).

4. The self-filtering rapid sampling device according to claim 1, 2 or 3, wherein the sampling head (4) is provided with an adsorption cavity, the adsorption cavity is communicated with the exhaust channel (206) on the connecting sleeve (2), and the adsorption cavity is provided with an adsorption port (401).

5. The self-filtering rapid sampling device according to claim 4, wherein the reset assembly comprises a second spring ring (402) and a pushing boss (403), the second spring ring (402) is located in the adsorption cavity, the second spring ring (402) is matched with the connecting sleeve (2), a second sealing ring (404) is arranged below the second spring ring (402), and the second sealing ring (404) is located in a sealing groove on the outer wall of the connecting sleeve (2); promote boss (403) and set up on sampling needle (3), promote the spacing head phase-match of boss (403) and sampling post (201), the below of promoting boss (403) is provided with first sealing washer, the inner wall phase-match of first sealing washer and sampling post (201).

6. The self-filtering rapid sampling device according to claim 1, 2, 3 or 5, wherein 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 liquid conveying pipe and are both matched with the filtering component, and the outlet corresponds to the sampling head (4).

7. The self-filtering rapid sampling device 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-filtering rapid sampling device according to claim 7, wherein the cleaning assembly comprises a blowing interface (506), the blowing interface (506) corresponds to a cleaning channel, and cleaning gas is introduced into the blowing interface (506); be provided with in connecting seat (504) and take compensation sealing washer (507), be provided with protection pad (508) in protection seat (505), take compensation sealing washer (507) and protection pad (508) all to cooperate with regulation pole (501).

9. The self-filtering rapid sampling device according to claim 8, wherein 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 connecting screws 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. The self-filtering rapid sampling device according to claim 7, 8 or 9, characterized in that the lower end of the adjusting rod (501) is provided with a sealing table, the sealing table is communicated with the cleaning channel, the sealing table is matched with the outlet, and the sealing table is provided with at least one layer of sealing gasket II (512); 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).