CN111879571A

CN111879571A - Self-sealing fluid collector

Info

Publication number: CN111879571A
Application number: CN202010971628.1A
Authority: CN
Inventors: 不公告发明人
Original assignee: Zha Changcai
Current assignee: Zha Changcai
Priority date: 2020-09-16
Filing date: 2020-09-16
Publication date: 2020-11-03

Abstract

The invention provides a self-sealing fluid collector, which comprises an outer barrel and a core body; the top of the outer barrel is provided with an opening for the core body to be integrally inserted, and the bottom end of the outer barrel is provided with an air inlet for the fluid to flow in; the core body can be installed in the outer barrel in a pull-in and plug-in mode, the central axis of the outer barrel serves as a rotating shaft to rotate freely, the air inlet nozzle is installed in the air inlet pipeline in an axial sliding mode, and the air inlet nozzle extends into the inner bottom of the outer barrel all the time under the action of elasticity and is in squeezing contact with the bottom end of the core body; the lower section of a central hole in the embedding plug inside the air inlet at the bottom of the air storage bin is used for inserting an air inlet nozzle, a sealing plug in socket fit with the conical hole is hung above the conical hole, the sealing plug is sleeved on a guide rod hung in the air inlet pipe in a sliding fit manner, the return spring needs to enable the sealing plug to be blocked on the conical hole in a non-connection state of the air inlet nozzle, and the fluid flowing into the air inlet nozzle is ejected from the conical hole when the air inlet nozzle is connected. The invention has good flexibility and strong adaptability, and is convenient for daily management and use.

Description

Self-sealing fluid collector

Technical Field

The invention relates to a sampling device, in particular to a self-sealing fluid collector.

Background

When fluid is treated, generally, fluid needs to be sampled and treated, the existing sampling generally adopts an apparatus such as a syringe to directly extract certain fluid and brings the certain fluid into laboratory inspection, the acquisition method is simple, the equipment cost is low, but a plurality of sampling equipment need to be taken by an acquirer for acquisition of a plurality of places or a plurality of air sources, and a serial number mark is also needed, the management is complicated, particularly, the continuous sequential sampling in the same air source runoff direction is realized, a plurality of sampling devices completely depend on manual management acquisition sequences, the sample models are marked, the complexity is high, errors are easy, the routine inspection is usually performed on the detection of some fluids, operating personnel can carry the sampling equipment with them, and the plurality of sampling equipment are inconvenient to carry and are more unfavorable for daily management and use. Therefore, at present, for multipoint sampling of fluid, the existing sampling equipment is inconvenient to be managed and used in a centralized manner, poor in maneuvering flexibility and not strong in adaptability.

Disclosure of Invention

The invention aims to solve the problems that the prior art provides a self-sealing fluid collector aiming at the defects in the prior art, the problems that the prior sampling equipment is inconvenient to manage and use in a centralized manner, poor in maneuvering flexibility and not strong in adaptability in the prior art for multi-point collection and sampling of fluid are solved, the high-precision detection for obtaining high-purity fluid is very effective, and the self-sealing fluid collector is especially suitable for the working condition with high fluid pressure.

In order to achieve the purpose, the invention adopts the following technical scheme:

a self-sealing fluid collector comprises an outer barrel and a core body; the outer barrel is of a barrel-shaped structure, the top of the outer barrel is provided with an opening for the core body to be integrally inserted, and the bottom of the outer barrel is provided with an air inlet for fluid to flow in;

the core body can be installed in the outer barrel in a pull-and-insert mode and can rotate freely by taking the central axis of the outer barrel as a rotating shaft; the core body is internally provided with a plurality of gas storage bins, all the gas storage bins are in an annular array by taking the circle center of the outer barrel as the center, so that when the core body is rotated, the gas inlet at the bottom end of each gas storage bin can be sequentially communicated with the gas inlet, and in the rotating process, the bottom end surface of the core body is always in sealing fit with the inner bottom surface of the outer barrel, so that fluid flowing in from the gas inlet pipeline can only flow into the gas storage bin communicated with the gas inlet;

an air inlet nozzle is axially and slidably arranged in the air inlet pipeline, and the air inlet nozzle always extends into the inner bottom of the outer barrel under the action of elasticity and is in extrusion contact with the bottom end of the core body; the air storage device is characterized in that an embedded plug is fixed in an air inlet at the bottom of the air storage bin, the lower section of a middle hole in the embedded plug is used for inserting a mouth part of the air inlet nozzle, the upper section of the middle hole is a conical hole with an upward large port, a sealing plug in socket fit with the conical hole is hung above the conical hole, the sealing plug is sleeved on a guide rod hung in the air inlet pipe in a sliding fit manner and is connected with a cross beam fixedly connected in the air inlet pipe, where the guide rod is located, through a reset spring, the reset spring needs to firmly seal the sealing plug on the conical hole in a non-connection state of the air inlet nozzle, and when the air inlet nozzle is connected, the flowing fluid is ejected from the conical hole.

The invention is also optimized aiming at the structural design, for example, the core body can be made into an integral forming type or an assembly type, when the assembly type is adopted, the core body can be in various forms:

one of the implementation structures: the section of the core body exposed out of the outer barrel is tightly connected with the section of the core body inserted into the outer barrel in a detachable mode, the section of the core body inserted into the outer barrel comprises a plurality of circular tubes which are arranged in an annular array mode and are closed in the top, tube holes of the circular tubes serve as the gas storage bin, all the circular tubes are detachably connected onto an annular mounting plate in an inserting mode, and the annular mounting plate can be installed in the outer barrel in a self-rotating mode and can slide up and down along the axial direction.

Preferably, the annular mounting plate is internally provided with a flower-shaped hole, the wall of the flower-shaped hole is convexly provided with a plurality of evenly-spaced triangular teeth in an isosceles triangle shape towards the center, the triangular teeth are rounded towards the tooth tip at the center of the annular mounting plate, and a concave cavity with a U-shaped cross section is formed between every two adjacent triangular teeth and is used for mounting the circular tube; the expansion pipe is inserted into the center of the flower-shaped hole and pushes all round pipes towards the corresponding cavities so as to fix all round pipes in the corresponding cavities. More preferably, the expansion tube is made of a balloon, and the balloon is used for fixing all round tubes in the corresponding cavities when being expanded.

Furthermore, the air inlet and the air inlet are both made into arc waist hole structures, the arc bending direction of the air inlet and the air inlet are consistent with the rotation direction of the core body in the outer barrel, and the air inlet is narrower than the air inlet. Particularly, an indicating arrow is further arranged at the edge of the barrel opening of the outer barrel, a scale line group matched with the indicating arrow is further arranged on the core body, and the scale line group where the indicating arrow is located marks the gas storage bin where the core body is collecting fluid at the moment; the scale line group comprises a plurality of scales to represent the communication degree between the air inlet hole and the air inlet.

In the above structure of the present invention, there is also a structural design that: when the air inlet nozzle structure with elasticity is arranged, the fixing of the core body can be realized only by the jacking force of the return spring of the air inlet nozzle without the need of an elastic fastener. Similarly, the lower annular guide groove of the elastic fastener structure is not needed, only one annular guide groove is provided, namely only the upper annular guide groove is processed, the lower annular guide groove is not needed to be further deeply extruded to fix the core body, and the fixing can be realized only by the jacking force of the return spring of the air inlet nozzle.

Compared with the prior art, the invention has the following beneficial effects: the core body integrated with the plurality of annular array type gas storage bins is used for separately and independently collecting a plurality of parts or a plurality of gas sources, the adaptability is strong, the core body can realize easy rotation during rotation so as to smoothly realize the connection between the corresponding gas storage bins and the gas inlet holes, and after the core body rotates in place, the pressure of the outside on the core body is released, and the relative position fixation between the core body and the outer barrel can be realized so as to realize integral connection. In addition, when the core body rotates, the continuous and ordered collection of ordered air source collection points can be realized, the sequence number does not need to be memorized or marked intentionally, the maneuvering flexibility is good, and due to the integration of a plurality of air storage bins (sampling pipes), the core body is more convenient to carry and manage daily, and is very suitable for daily polling and sampling. In addition, the air inlet nozzle can slide into the gas storage bin to be connected and kept in sealed connection when contacting with the bottom end of the gas storage bin which is rotated in place, and the core body is continuously rotated after collection and sampling are finished, so that the air inlet nozzle is withdrawn from the plug at the bottom end of the gas storage bin, the plug is automatically restored to be sealed, collected fluid can be prevented from flowing out, collection precision is guaranteed, manual switch control action intervention is reduced, and high automation is realized.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.

Drawings

FIG. 1 is a schematic structural diagram of one embodiment of the present invention;

FIG. 2 is an enlarged view of a portion a of FIG. 1;

FIG. 3 is a partial schematic view of another fastener;

FIG. 4 is a top view of FIG. 1;

FIG. 5 is an enlarged view of FIG. 4 at b;

FIG. 6 is a top view of a unitary core structure;

FIG. 7 is a cross-sectional view taken along line A-A of FIG. 1, with the core being a circular tube welded together;

FIGS. 8-10 are cross-sectional views of three embodiments of a circular tube mounted on an annular mounting plate;

FIG. 11 is a schematic cross-sectional view of the waist-hole-shaped intake hole and the intake port;

FIG. 12 is another schematic structural diagram of an embodiment of the present invention;

FIG. 13 is a top view of FIG. 12;

FIG. 14 is a top view of the core of FIG. 13 prior to being rotated;

FIG. 15 is a schematic view of an alternative connection between the core and the compression spring;

FIG. 16 is a schematic structural view of an embodiment of the structure with a self-sealing gas storage container according to the present invention;

fig. 17 is a sectional view taken at c of fig. 16.

The outer barrel 1, the annular sinking platform 101, the upper annular guide groove 102, the lower annular guide groove 103, the core body 2, the annular diving platform 201, the gas storage bin 3, the gas inlet hole 4, the semi-section round tube 5, the gas inlet pipeline 6, the sealing gasket 7, the upright post 8, the compression spring 9, the sliding compression piece 10, the locking bolt 11, the base 12, the indication arrow 13, the scale mark family 14, the round tube 15, the annular mounting plate 16, the expansion tube 17, the air bag 18, the pressure bearing spring 19, the rotating handle 20, the guide block 21, the slot 22, the overtravel groove 23, one set of the overtravel groove 2301, the other set of the overtravel groove 2302, the gas inlet nozzle 24, the embedding plug 25, the sealing plug 26, the guide rod 27, the return spring 28, the cross beam 29, the wear-resisting block 30, the polished rod 31, the seat groove 32, the disc spring 33, the cylindrical spring 34, the inner expansion chute 35, the.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the functions of the invention clearer and easier to understand, the invention is further explained by combining the drawings and the detailed implementation mode:

in this embodiment, a self-sealing fluid collector is described, and the fluid mainly refers to a liquid or a gas substance such as a smoke gas in the present invention, and the smoke gas is used herein for description. One specific structure of the self-sealing fluid collector is shown in fig. 1, and mainly comprises an outer barrel 1 and a core body 2; and if necessary, a fastener for fixedly connecting the outer barrel 1 and the core body 2 can be optionally arranged and additionally arranged. Specifically, the outer tub 1 of the present embodiment is a tub-shaped structure, i.e., the top is open, the bottom is closed, the top of the outer tub 1 is open for the core 2 to be inserted coaxially and vertically, the bottom of the outer tub 1 is provided with an air inlet 4 for fluid to flow into, and when manufacturing, if necessary, a valve (not shown in the figure) can be added on the air inlet pipe 6 connected to the air inlet 4 to control whether the air inlet pipe 6 is connected or not. The inlet duct 6 is intended to be inserted into a corresponding fluid detection sampling point. Meanwhile, the core 2 of the present embodiment can be installed inside the outer tub 1 in a pluggable manner and freely rotate by taking the central axis of the outer tub 1 as a rotation axis, in order to facilitate rotation, a rotating handle 20 is fixedly connected to a portion of the top end of the core 2 exposed outside the outer tub 1, and the rotating handle 20 is made of a cross bar. If the fastening member is provided, when the core 2 is fastened, it can apply a vertical downward axial pressure to the core 2 so that the core 2 cannot rotate freely within the tub 1. The core 2 is internally provided with a plurality of gas storage bins 3, all the gas storage bins 3 are in an annular array by taking the circle center of the outer barrel 1 as the center, so that when the core 2 is rotated, the gas inlet at the bottom end of each gas storage bin 3 can be communicated with the gas inlet 4 in sequence, and in the rotating process, the fluid flowing into the gas inlet pipeline 6 can only flow into the gas storage bin 3 communicated with the gas inlet 4, and the gas storage bins 3 and the gas inlet 4 are independently communicated one by one. Meanwhile, the sealing between the bottom end of the core 2 and the inner bottom of the outer tub 1 of the present embodiment is preferably designed as follows, except for a hard sealing manner such as direct contact: specifically, referring to fig. 16-17, an air inlet nozzle 24 is axially slidably mounted in the air inlet duct 6, the air inlet nozzle 24 has a spherical shape, and the air inlet nozzle 24 always extends above the inner bottom of the outer tub 1 and is in pressing contact with the bottom end of the core 2 under the action of elastic force such as a spring. A plug 25 is fixed in the air inlet at the bottom of the air storage bin 3, the lower section of a middle hole in the plug 25 is used for inserting the mouth of the air inlet nozzle 24, the upper section of the middle hole is a conical hole with a large port facing upwards, a sealing plug 26 in socket fit with the conical hole is hung above the conical hole, the sealing plug 26 is sleeved on a guide rod 27 hung in the air inlet pipe in a sliding fit manner and is connected with a cross beam 29 fixedly connected in the air inlet pipe, on which the guide rod 27 is located, through a return spring 28, the return spring 28 needs to enable the sealing plug 26 to be firmly blocked on the conical hole in a non-connection state of the air inlet nozzle 24, and the fluid which flows in when the air inlet nozzle 24 is connected is ejected from the conical hole. When the sampling device is used, the core body 2 is rotated, the mouth of the air inlet nozzle 24 is in pressing contact with the bottom end of the core body 2 (or the bottom air inlet end of the air storage bin 3), when the sampling device is rotated to a proper position, the air inlet nozzle 24 slides into the lower section of the middle hole of the plug 25 to inject fluid into the middle hole of the plug 25, the sealing plug 26 in the conical hole at the upper section of the middle hole is jacked open by impact force during fluid injection, and therefore fluid injection is achieved, and samples are collected. The biggest advantage of this structure is that the self-sealing of the gas storage bin 3 can be realized when non-sampling is performed, so that no valve is added to the gas inlet pipe 6. The automatic opening of 3 bottoms in gas storage storehouse when sampling is very effective to the high accuracy detection of obtaining high-purity fluid, and especially the higher operating mode of fluid pressure itself is particularly suitable for.

Referring to fig. 2, if a fastening member is added to improve the fastening effect, the fastening member preferably includes a sliding column, a compression spring 9, a sliding compression member 10, a base 12, a locking bolt 11 and a disc spring 33, wherein the sliding column is vertically inserted into an annular chute on an annular ramp 201 extending on the outer side wall of the core body 2, and the bottom end of the sliding column is in sliding fit with the annular chute. The annular diving platform 201 is supported in the annular sinking platform 101 at the top opening end of the outer barrel 1 through the disc spring 33 and can rotate freely and slide vertically. The base 12 is vertically and fixedly connected to an annular flange extending outwards from the open end of the top of the outer barrel 1, the locking bolt 11 is vertically screwed downwards into a vertical sliding cavity of the base 12, the sliding pressing piece 10 is of an inverted spoon-shaped structure, a spoon handle end of the sliding pressing piece is located in the vertical sliding cavity and is in vertical sliding fit with the vertical sliding cavity, the top end of the pressing spring 9 is connected in a spoon body, and the bottom end of the pressing spring 9 is sleeved on the free end of the sliding column, so that the sliding pressing piece 10 is pressed downwards to fix the core body 2 in the outer barrel 1 when the locking bolt 11 is screwed, and relative fixation is realized. As shown in fig. 3, another structure of the fastener is: the sliding pressure element 10 may comprise a rod with a blind hole, in which a sliding shaft is connected in a sliding manner by means of a pressure spring 9, the sliding shaft being designed as a column 8 and the free end of the sliding shaft being hemispherical.

When the self-sealing fluid collector is used, the locking bolt 11 is loosened to enable the core body 2 to rotate freely, one of the gas storage bins 3 is communicated with the gas inlet hole 4, the locking bolt 11 is screwed along with the gas storage bin, the sliding pressing piece 10 is pressed downwards by the locking bolt 11, the sliding pressing piece 10 extrudes the annular jump table 201 through the spring, so that the core body 2 at the moment is firmly fixed in the outer barrel 1, then the gas inlet pipeline 6 is inserted into a first sampling point, or a first fluid, a valve is opened to collect a first sample, and the valve is closed after collection is finished; then, the core body 2 is continuously rotated in the same direction according to the steps, and at this time, if necessary, when the core body 2 is rotated to the air inlet 4 and is disconnected with the first air storage bin 3 but is not connected with the second air storage bin 3 (in this case, the interval between the adjacent air storage bins 3 is required to be larger), the valve is opened, and the residual fluid in the valve is freely discharged; if the detection precision is not high or the detected fluids are the same, the core body 2 can be directly transferred to the air inlet 4 to be communicated with the second air storage bin 3, the fluid sampling of the second sampling point is directly carried out, the sampling is repeated in such a way, the fluid sampling of all the sampling points is finished one by one, and the sampling points are intensively stored in the core body 2, so that the carrying and the management are convenient. Therefore, the sampling tube for fluid treatment is simple and reliable, has a compact structure, high concentration degree, strong flexibility of working machine and good adaptability, when sample fluid needs to be discharged, the valve of the air inlet pipeline 6 is opened after the corresponding air storage bin 3 is rotated in place, and the air inlet pipeline 6 is changed into an air outlet pipeline to discharge the sample fluid.

In the above embodiment, in order to facilitate the apparatus to rapidly extract fluid media during sampling without sampling high-level gravity flow collection, and further improve adaptability and mobility, referring to fig. 1, an air extraction pipe 39 may be further installed at the upper end of the core 2 to be connected to an air extraction device (not shown in the figure), and the lower end of the air extraction pipe 39 is communicated with a vent cavity at the top of the core 2, the vent cavity is, for example, made into a cylindrical cavity as shown in fig. 1, and the cylindrical cavity is simultaneously communicated with all the air extraction holes 38 communicating with the tops of the air storage bins 3, so that the piston 37 in the air storage bin 3 can be simultaneously lifted during air extraction by the air extraction device, which can greatly save the number of pipeline connections, but only the piston 37 in the air storage bin 3 communicating with the air inlet 4 can be lifted upwards, thereby realizing suction type sampling of the air storage bin 3. Of course, in the above embodiment, when the bottom end of the core 2 is not sealed with the inner bottom of the outer tub 1, all the pistons 37 will move upward, but only the air storage bin 3 connected to the air inlet 4 will perform suction sampling. In the above embodiment, the self-sealing gas storage 3 cannot be pumped by an air pumping device, and the self-sealing gas storage 3 is more suitable for sampling fluid with a certain pressure, so that the air pumping device is not needed. In order to better and individually control the suction of the gas storage bins 3, the above structure can also be respectively connected with the air extractor through separate pipelines, and each pipeline is provided with a control ball valve so as to individually and flexibly control whether the corresponding gas storage bin 3 is normally sucked and sampled.

As specific implementation details, the core 2 of the present embodiment may have various structural forms during the specific manufacturing, for example, a person skilled in the art may manufacture the core 2 as an integrally formed type as shown in fig. 6, the structure is more compact and convenient to install, but considering the independent separation and transfer of a single sample, it is preferable to adopt an assembly type, specifically, when adopting the assembly type, a section of the core 2 of the present embodiment exposed out of the outer tub 1 is detachably and tightly connected with a section thereof inserted into the outer tub 1, for example, the core 2 is manufactured into two sections which can be attached up and down, a section of the core 2 inserted into the outer tub 1 includes a plurality of circular pipes 15 with closed top in an annular array arrangement, that is, a circular pipe 5 in a half-section as shown in fig. 8-10, the pipe holes of the circular pipe 15 serve as the gas storage bin 3, all the circular pipes 15 are detachably inserted into, for example, a circular hole is annularly arrayed on the annular mounting plate 16 to mount the circular tube 15, the annular mounting plate 16 can be rotatably mounted in the outer barrel 1 and can slide up and down along the axial direction of the outer barrel 1, and the annular mounting plate 16 can be made thicker as required to facilitate stable rotation. All the circular tubes 15 may be welded and fixed one by one as shown in fig. 7.

In this embodiment, for the detachable installation design of the circular tube 15, preferably, as shown in fig. 9, a flower-shaped hole is provided in the annular installation plate 16, the hole wall of the flower-shaped hole is convexly provided with a plurality of evenly spaced triangular teeth in the shape of isosceles triangles toward the center thereof, and the triangular teeth are rounded toward the tooth tip at the center of the annular installation plate 16, so as to guide the circular tube 15 to separate and return without friction. More specifically, a concave cavity with a U-shaped cross section is formed between two adjacent triangular teeth, and the concave cavity is used for installing the circular tube 15. The embodiment further comprises a tightening pipe 17, and the tightening pipe 17 pushes all the round pipes 15 towards the corresponding cavities when being inserted into the center of the flower-shaped hole, so as to fix all the round pipes 15 in the corresponding cavities. More preferably, as shown in fig. 10, the expansion tube 17 is made of an air bag 18, when the air bag 18 is inflated, the air bag 18 is inflated to fix all the round tubes 15 in the corresponding cavities, automatic dispersed installation is realized under the shunting action of the triangular teeth, the round tubes 15 are guided to be separated and returned into the cavities one by one, and if the round tubes 15 need to be taken out, only the compressed air in the air bag 18 needs to be discharged, and the round tubes 15 can be taken out freely.

Further, during the specific manufacturing, as shown in fig. 11, the air inlet and the air inlet 4 are both made into an arc waist hole structure, the arc bending direction of the air inlet and the air inlet 4 is consistent with the rotation direction of the core body 2 in the outer barrel 1, and the air inlet 4 is narrower than the air inlet so as to fully intake air; the structure can better realize the size adjustment of the cross overlapping area between the air inlet 4 and the air inlet of the air storage bin 3 when the core body 2 is rotated, and realize the flow adjustment of fluid collection. In addition, especially, an indication arrow 13 is further disposed at the rim of the tub opening of the outer tub 1, a group of scales 14 matched with the indication arrow 13 is further disposed on the core 2, that is, a plurality of scales are collectively arranged to form a group of scales 14, and the group of scales 14 where the indication arrow 13 is located marks the gas storage bin 3 where the core 2 is collecting fluid at this time. The graduation line group 14 comprises a plurality of graduation structures, which can represent the communication degree between the air inlet 4 and the air inlet, and intuitively master the fluid acquisition flow regulation condition.

On the other hand, the above-mentioned fastener of the present fluid-handling coupon may also be or may further comprise the following structure: as shown in fig. 12, the bottom end of the core 2 is supported and connected with the inner bottom of the outer tub 1 by a pressure spring 19 to provide a space for the core 2 to move up and down; specifically, as shown in fig. 15, one end of the pressure spring 19 is fixed in a seat groove 32 embedded in the bottom of the outer tub 1, the other end is connected with a polish rod 31 extending into the seat groove 32, the top end of the polish rod 31 extends out of the seat groove 32 and then is fixed with a friction block embedded in the bottom end of the core body 2 and integrally connected with the same. Referring also to fig. 13-14, the core 2 has two guide blocks 21 protruding from the top side walls thereof, and the guide blocks 21 may be formed in a rectangular shape with rounded free ends. Two circles of coaxial annular guide grooves are arranged on the inner wall of the outer barrel 1 close to the barrel opening, for example, the cross section of the outer barrel 1 is rectangular, the width of the upper annular guide groove 102 is larger than that of the lower annular guide groove 103, two slots 22 penetrating through the barrel opening are arranged on the barrel wall of the outer barrel 1 above the upper annular guide groove 102, and the guide block 21 is inserted into the upper annular guide groove 102 through the slots 22 and is in sliding fit with the upper annular guide groove 102. A plurality of groups of overrun grooves 23 with the number being consistent with that of the gas storage bins 3 are also arranged between the two annular guide grooves, each group of overrun grooves 23 is used for the two guide blocks 21 to slide in and downwards enter the lower annular guide groove 103, so that the guide blocks 21 can be downwards moved into the lower annular guide groove 103 in advance before the core body 2 rotates to the communication position of the corresponding air inlet and the gas inlet 4, then the core body 2 continuously rotates in the same direction to enter the lower annular guide groove 103, namely, the corresponding air inlet and the gas inlet 4 are communicated, and after the pressure on the core body 2 is released, the core body 2 and the outer barrel 1 are firmly and fixedly connected into a whole under the action of the pressure-bearing spring 19. On the basis of the structure, when the sampling tube for fluid treatment is used, the core body 2 is rotated to the position that the two guide blocks 21 can slide into the slots 22, so that when the core body 2 is rotated and pressed, the core body 2 can move downwards, the guide blocks 21 are positioned at the position in the upper annular guide groove 102, at the moment, the core body 2 is continuously rotated, the guide blocks 21 slide along with the guide blocks and are close to one group of the over-travel grooves 23, when the guide blocks 21 slide into the lower annular guide groove 103 through the over-travel grooves 23, the air storage bin 3 can be communicated with the air inlet holes 4 only by continuously rotating a little in the same direction, and the rotation amount of the little rotation is based on the principle that the guide blocks 21 and the over-travel grooves 23 are just staggered. The structural design aims to realize that the corresponding gas storage bin 3 is close to the matched air inlet 4 as quickly and easily as possible, only the position of ready communication between the gas storage bin 3 and the air inlet 4 is needed to be reached, the labor is slightly wasted, most of the rotation distance of the communication between the gas storage bin 3 and the air inlet 4 is searched, and the core body 2 is not further inserted into the outer barrel 1, so that the pressure borne by the pressure bearing spring 19 is small, the core body 2 is naturally labor-saving, the alignment position of the gas storage bin 3 and the air inlet 4 is conveniently and accurately searched, and the sampling tube is particularly suitable for a sampling tube which has small sampling amount and is used for processing fluid which needs to be frequently removed from the outer barrel 1 by the core body 2.

The two annular guide grooves and the corresponding auxiliary structures of the guide blocks 21 in the above structure of the present embodiment can be used alone without the above-mentioned fastening members to rotate the core 2 to the proper position and fix the core, and if the two annular guide grooves and the corresponding auxiliary structures are used together with the above-mentioned fastening members, the fixed installation function after the core 2 is rotated to the proper position can be stably realized, but the installation and the use are complicated, and at this time, the annular sinking platform 101 must be processed deeply to provide the core 2 with enough twice downward movement. Further, in order to facilitate manufacturing the overrun groove 23, the partition portion between the two annular guide grooves of the present embodiment is an annular body protruding radially from the inner wall of the outer tub 1 toward the center of the outer tub 1, and a rectangular through sliding groove is formed in the inner surface of the annular body in the vertical direction, and the through sliding groove serves as the overrun groove 23. In addition, a plurality of pressurizing annular guide grooves coaxial with the lower annular guide groove 103 are arranged below the lower annular guide groove 103, and the overtravel grooves 23 are formed between the lower annular guide groove 103 and the pressurizing annular guide grooves and between the pressurizing annular guide grooves, so that if the pressure-bearing spring 19 is in fatigue failure or has reduced elasticity, the core body 2 can be further moved downwards to ensure fastening.

It should be noted that, the above structures of the present embodiment may be selected in combination, and not all structures are complete, but they are not necessarily used alternatively, for example: when the air inlet nozzle 24 with elasticity is provided, the fastening piece does not need to comprise a compression spring and/or a disc spring 33 to participate in fixing the core body 2, namely the fastening piece does not need to be elastic (although a fastening piece with a compression spring 9 is drawn in fig. 16), and elastic fixing can be realized only by the jacking force of the return spring 28 of the air inlet nozzle 24, but only the core body 2 is relatively difficultly rotated at the moment, so that the air inlet nozzle is suitable for a small-sized self-sealing fluid collector.

Similarly, in one embodiment, the lower annular guide groove 103 of the fastener structure is not required, only one annular guide groove is provided, that is, only the upper annular guide groove 102 is processed, and further deep compression of the lower annular guide groove 103 is not required to fix the core body 2, and the fixing can be realized only by the pushing force of the return spring 28 of the air inlet nozzle 24, but the core body 2 is relatively hard to rotate and is relatively suitable for a small-sized self-sealing fluid collector.

As a specific implementation structure, the part of the core body 2 inserted into the outer barrel 1 is cylindrical, and a circle of cylindrical gas storage bin 3 is arranged in the core body 2 along the axial parallel direction; the bottom end face of the core body 2 is fixedly attached with a circular sealing gasket 7, the sealing gasket 7 is provided with through holes in a one-to-one correspondence mode with the air inlets, and the hole diameter of each through hole is larger than that of each air inlet 4 so as to better collect the fluid. In addition, in this embodiment, the cross section of annular spout is convex, the one end that the traveller stretches into annular spout is the sphere form to better realize sliding rotation. When processing preparation, the fastener is equipped with three, and three fastener is arranged on 2 lateral walls of core in annular array ground, simple structure, and the atress is balanced.

In addition, in the above embodiment of the present invention, in order to facilitate installation of the air inlet nozzle 24 and achieve elastic expansion and contraction well, the air inlet nozzle 24 is provided with a shaft shoulder 36 at a position close to the bottom of the outer barrel 1 at a section of the air inlet duct 6, the inner wall of the air inlet duct 6 is provided with an annular inward-expanding chute 35 along the axial direction thereof, the bottom end port of the air inlet duct 6 is provided with an annular step, the shaft shoulder 36 extends into the inward-expanding chute 35 and is in sliding connection with the inward-expanding chute 35, a cylindrical spring 34 located in the air inlet duct 6 is further arranged between the shaft shoulder 36 and the annular step, the cylindrical spring 34 is sleeved outside the section of the air inlet duct 6, and the shaft shoulder 36 is not in contact with the top wall of the inward-expanding chute 35 all the time under the action of the cylindrical spring 34, that is. The structure of the sealing plug 26 is as follows: it includes cylinder portion and sphere portion from top to bottom, cylinder portion with reset spring 28 connects, and the protrusion cambered surface of sphere portion is just right the mouth exit end of suction nozzle 24, the terminal surface of cylinder portion can be connected well with reset spring 28 tip, and the impact friction when the sphere portion then can reduce the fluid and get into, realizes shunting and smoothly leading-in sample fluid when the fluid gushes better, realizes sample collection.

Finally, the embodiment also provides a method for sampling a fluid medium, which mainly comprises the following steps:

s1, a ball valve is connected to the bottom of a storage tank for containing fluid media, the ball valve is connected with a channel steel-shaped conveying groove which is arranged in a downward inclined mode, and the inclined included angle between the conveying groove and the horizontal plane is larger than 60 degrees so as to improve the kinetic energy when the fluid flows out.

And S2, connecting the air inlet pipe of the self-sealing fluid collector of the non-self-sealing air storage bin 3 with the conveying groove. When the device is used, the relative included angle between the air inlet pipe and the conveying groove is selected according to needs, so that the pressure or the kinetic energy of the fluid flowing into the air storage bin 3 is increased as much as possible, for example, the air inlet pipe is arranged in parallel with the conveying groove facing the direction of the fluid, and the fluid can be rapidly poured.

And S3, fixedly connecting a driven gear to the top end of the core body 2 of the self-sealing fluid collector, wherein the driven gear is meshed with an output gear on an output shaft of a gear box, and an input shaft of the gear box is in transmission connection with a stepping motor.

S4, opening the ball valve to enable fluid to continuously flow in the conveying groove, setting the rotating speed of the stepping motor, enabling the core body 2 to rotate at a corresponding rated speed when a driven gear driven by the gear box rotates at the rated rotating speed, and then intermittently enabling the air inlet pipe to be communicated with the corresponding air storage bin 3 one by one, so that automatic continuous sampling is achieved, fluid media in each time period and each fluid in the storage tank are sampled in time when flowing, and real-time and comprehensive sampling research is conducted on the overall performance sampling evaluation of the fluid in the tank body and the qualification of all the fluids during construction. Compared with the prior art, the method has the advantages of simplicity, easiness in implementation, high automation degree, low manufacturing cost and no large economic cost burden due to the fact that samples are collected frequently by manual fixed-point timing.

In the sampling method, if a highly integrated sampling device provided with the piston 37 is used, the fluid can be rapidly sampled by using a suction force generated by the movement of the piston 37 while reducing the kinetic energy of the fluid by selecting a transport tank with a small inclination angle for installation.

Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.

Claims

1. A self-sealing fluid collector is characterized in that: comprises an outer barrel and a core body; the outer barrel is of a barrel-shaped structure, the top of the outer barrel is provided with an opening for the core body to be integrally inserted, and the bottom of the outer barrel is provided with an air inlet for fluid to flow in;

the core body can be installed in the outer barrel in a pull-and-insert mode and can rotate freely by taking the central axis of the outer barrel as a rotating shaft; the core body is internally provided with a plurality of gas storage bins, and all the gas storage bins are in an annular array by taking the circle center of the outer barrel as the center, so that when the core body is rotated, the gas inlet at the bottom end of each gas storage bin can be sequentially communicated with the gas inlet;

2. The self-sealing fluid collector of claim 1, wherein: the air inlet pipeline is provided with a valve, and the air inlet pipeline is fixedly connected to the end face of the bottom end of the outer barrel close to the bottom end of the outer barrel.

3. The self-sealing fluid collector of claim 1 or 2, wherein: the suction nozzle is located one section of admission line leans on outer barrel bottom department to have a shaft shoulder, seted up annular interior spout that expands along its axial on the inner wall of admission line, admission line's bottom port department has an annular step, the shaft shoulder stretches into and expands within the spout and sliding connection with it in, the shaft shoulder with still be equipped with the cylinder spring that is located the admission line between the annular step, this cylinder spring housing is in one section outside of admission line, just under cylinder spring's effect the shaft shoulder does not contact with the roof of interior spout that expands all the time.

4. The self-sealing fluid collector of claim 1, wherein: the sealing plug comprises a cylindrical part and a spherical part from top to bottom, the cylindrical part is connected with the return spring, and the convex arc surface of the spherical part is just opposite to the outlet end of the mouth part of the air inlet nozzle.