CN212110701U

CN212110701U - Fluid sampler and sampling assembly thereof

Info

Publication number: CN212110701U
Application number: CN202020151780.0U
Authority: CN
Inventors: 孙倚天; 孟熠黎
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-02-04
Filing date: 2020-02-04
Publication date: 2020-12-08
Anticipated expiration: 2030-02-04

Abstract

The utility model discloses a fluid sampler and a sampling component, wherein a bottle plug of the sampler is clamped outside a through hole on the end surface of an external shell so as to switch between an open working position and a closed working position relative to the external shell, and a bottle plug mounting part is arranged on a bottle plug clamp; the elastic reset piece is arranged between the outer part of the bottle stopper clamp and the outer shell to provide reset acting force for switching the bottle stopper clamp to a closed working position; the transmission piece can be switched between an opening working position and a closing working position relative to the external shell, a detachable clamping limiting pair is arranged between the transmission piece and the bottle stopper pliers, and when the transmission piece is switched to the opening working position, the bottle stopper pliers can be kept at the opening working position through the clamping limiting pair; when the transmission part is switched to the closed working position, the clamping limiting pair is separated so that the bottle stopper clamp can be switched to the closed working position. The sampling process is completed in the fluid, and the sample can well represent the fluid in the environment of the target depth. By applying the scheme, the production and use cost is effectively reduced on the basis of obtaining good detection accuracy.

Description

Fluid sampler and sampling assembly thereof

Technical Field

The utility model relates to a subterranean fluid sample sampling technical field, concretely relates to fluid sampler and sampling subassembly thereof.

Background

Groundwater sampling is mainly used in the fields of environmental monitoring, such as but not limited to environmental remediation and the like, and groundwater quality is detected through collected samples so as to determine pollutants and track remediation effects of the pollutants. As is known, sampling mainly comprises an active mode and a passive mode, wherein most of the active modes use a water containing device or a pump to collect underground water at a target depth to the ground, and the underground water is filled into a sampling bottle and then is sent to a laboratory. In the practical application process, the consumption of manpower and material resources is high, solid liquid waste is generated, and certain disturbance can be generated on the target fluid. The most advanced active sampling technology at present is named as a low-speed pump sampling method, and compared with other methods which directly use a water holding device for sampling (a Belleville tube), an obtained sample can relatively accurately represent a target fluid, but the method has the main defects that high manpower and material resources and waste are generated, and the representativeness of the sample to the target fluid depends on the underground water environment and the distribution condition of pollutants, so compared with the passive sampling method, the difficulties can be overcome.

The passive method is used for enabling the sample to enter the sampler by using a natural method, and specifically comprises direct physical loading, membrane permeation, adsorption and the like. The membrane permeation and adsorption have restrictive requirements on substances to be detected, for example, the substances need to be organic substances or have volatility and the like. A typical purely physical passive sampler in the prior art can effectively overcome the limitation problem of the substance to be detected, please refer to fig. 1. During specific operation, the sampling bottle with the upper opening and the lower opening is placed to the target depth of underground water, and the pneumatic starter is used for activating a mechanism to seal the bottle mouth to finish sampling. However, this solution, limited by its own structure, has the following drawbacks:

first, a spring 45 connecting the two stoppers is inserted into the bottle body 20, and the stoppers are closed inward on the upper and

lower bottle openings

25, 30 by the spring 45 when the mechanism is started. The foreign matter in the sample directly influences the target fluid, and even if the spring is wrapped by polytetrafluoroethylene, the risk of falling off and polluting the sample can be caused after the spring is used for a long time. In particular, polytetrafluoroethylene is considered an unusable material when taking certain fluorine-containing samples.

Second, if the sample vial is sent directly to the laboratory, the stopper and spring 45 are considered non-recyclable solid waste, which is costly to produce and use.

Thirdly, the upper and lower bottle stoppers must be thickened and specially designed (the hook 80 is used for hooking the spring 45), except that the production and use costs are higher, the difficulty of laboratory detection is increased, and the accuracy is reduced.

Fourth, the operator is required to shear off the excess parts 50, 55 (which are designed to snap into the machine) of the stopper before screwing the external cap (not shown), thereby increasing the chance of compromised sample tightness and increasing sampling time and complexity; in addition, stoppers that do not shear uniformly also run the risk of causing sample failure.

Fifthly, based on the design of spring and bottle stopper, the corresponding driving medium 240 in the back of a plurality of body 20 of device needs to be designed to be up-down reverse flexible, the structure is comparatively complicated, manufacturing cost is higher to damage risk has been increased.

In view of the above, it is desirable to perform an optimized design for the existing grinding machine production equipment to overcome the above technical defects.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a fluid sampler and sampling subassembly of configuration optimization to overcome the defect that prior art exists, on the basis that obtains good detection accuracy, can effectively reduce production and use cost.

The utility model provides a fluid sampler, include: the bottle body accommodating cavity of the external shell is provided with an end surface through hole which is correspondingly arranged with the bottle mouth of the sampling bottle; bottle stopper pincers, be located the outside of outside casing the terminal surface through hole to for outside casing switches between the work position of opening and closed work position, be provided with the bottle stopper installation department on the bottle stopper pincers to the configuration is: the bottle stopper arranged on the bottle stopper clamp positioned at the closed working position is matched with the bottle mouth of the sampling bottle in a sealing way; an elastic return member disposed between an exterior of the bottle stopper clamp and the outer housing and configured to: when the bottle plug pliers are switched to the opening working position, the elastic resetting piece is stressed and deformed, elastic deformation energy is stored, and the deformation energy can be released to provide a resetting acting force for switching the bottle plug pliers to the closing working position; the transmission part can be switched between an opening working position and a closing working position relative to the external shell, and a detachable clamping limiting pair is arranged between the transmission part and the bottle plugging pliers and is configured as follows: when the transmission part is switched to an opening working position, the bottle stopper clamp can be kept at the opening working position through the clamping limiting pair; when the transmission part is switched to the closed working position, the clamping limiting pair is separated so that the bottle stopper clamp is switched to the closed working position.

Preferably, the end face through opening comprises two opposite openings arranged along a first direction so as to be respectively arranged corresponding to the two openings of the sampling bottle, and the bottle stopper clamp and the elastic resetting piece are respectively arranged correspondingly to be two; the first direction is perpendicular to the plane of the end face of the outer shell.

Preferably, the transmission member has a rod body built in a surface sliding groove of the outer shell, and is linearly displaceable in the sliding groove along a first direction to switch between an open working position and a closed working position relative to the outer shell; and the cross sections of the sliding groove and the rod body are non-circular.

Preferably, the stopper forceps comprise a base plate and a jaw at an outer edge of the base plate, the jaw forming the stopper mounting portion; the elastic reset piece is a torsion spring, and two working ends of the torsion spring are respectively connected to the outer surface of the outer shell and the outer surface of the bottom plate; and a middle shaft penetrates through a spring ring hole of the torsion spring, and the end part of the middle shaft is pivoted with the body of the external shell, so that the bottle stopper clamp can rotate relative to the external shell and can be switched between an opening working position and a closing working position.

Preferably, the outer surface of the bottom plate is provided with a spring fixing seat, the spring fixing seat is provided with a transverse spring fixing hole parallel to the plate surface of the bottom plate, and the corresponding working end of the torsion spring is inserted into the transverse spring fixing hole.

Preferably, a support rod is arranged on one of the end part of the rod body of the transmission part and the bottom plate of the bottle stopper clamp, an insertion hole is arranged on the other of the end part of the rod body of the transmission part and the bottom plate of the bottle stopper clamp, and the support rod and the insertion hole form the detachable clamping limiting pair.

Preferably, the support rods are formed by bending and extending the rod bodies of the transmission rods, and the bending directions of the two support rods at the two end parts are consistent; the insertion holes are formed in a vertical plate arranged on a bottom plate of the bottle stopper clamp.

Preferably, the vertical plate is located on the bottom plate of the spring fixing seat on the side close to the center shaft, and the vertical plate is further provided with a vertical spring fixing hole, so that the corresponding working end of the torsion spring is inserted and connected to the horizontal spring fixing hole through the vertical spring fixing hole formed in the vertical plate.

Preferably, when the bottle stopper clamp is in the opening working position, the insertion holes in the vertical plate are arranged along the first direction.

Preferably, the transmission member has a sliding portion located above the end face through opening, and the sliding portion is slidably displaceable relative to the outer casing along a second direction to switch between an open working position and a closed working position relative to the outer casing, and the second direction is parallel to a plane of the end face of the outer casing.

Preferably, a transition piece is fixedly arranged on the outer shell, the transition piece is provided with a sliding adaptation part arranged along the second direction, and the sliding part can be slidably displaced on the sliding adaptation part relative to the outer shell along the second direction; the bottle stopper pliers comprise a bottom plate and a jaw positioned at the outer edge of the bottom plate, the jaw forms the bottle stopper mounting part, a pressure spring guide cylinder is arranged on the surface of the bottom plate on the opposite side of the jaw along a first direction, and the transmission part is provided with a clamping part arranged from the sliding part along the first direction so as to form a clamping limit pair with the pressure spring guide cylinder; the elastic reset piece is a pressure spring arranged in the pressure spring guide cylinder and is pressed against the sliding adaptive part arranged on the transition piece and the bottom plate of the bottle stopper clamp.

Preferably, the clamping part of the transmission part and the outer surface of the pressure spring guide cylinder are provided with a clamping hook on one of the two parts and a bayonet on the other part, and the clamping hook and the bayonet form a detachable clamping limit pair.

Preferably, one end of the sliding adapting part of the transition piece has a stopping part arranged along the first direction, a triggering elastic part is arranged on the sliding adapting part between the stopping part and the sliding part, and the other side of the sliding part can press against the triggering part and is configured as follows: when the triggering portion presses against the sliding portion, the triggering elastic piece is stressed and deformed, elastic deformation energy is stored, and the deformation energy can be released to provide a reset acting force for switching the sliding portion to a closed working position.

Preferably, one side inner wall of the outer shell is provided with a supporting part formed by extending inwards, and in a projection plane perpendicular to the first direction, the inner edge contour of the supporting part is positioned outside the outer contour of the bottleneck of the sampling bottle.

The utility model also provides a fluid sampling assembly, including at least two fluid samplers, characterized in that, the fluid sampler is as before, still includes trigger part and the sampler connecting piece of setting between the adjacent external casing of fluid sampler; the sampler connecting piece is detachably connected with the two outer shells; the triggering part of the triggering part is connected with one of the transmission parts, and the adjacent transmission parts which are oppositely arranged along the first direction are connected by a traction rope so as to be synchronously switched to a closed working position under the action of the triggering part.

Preferably, the fluid sampler further comprises a trigger component fixing part for installing a trigger component, the trigger component fixing part is detachably connected with the outer shell of the fluid sampler which is positioned at the outer side along the first direction, and the trigger part of the trigger component is connected with the transmission part of the fluid sampler at the outer side.

Preferably, the sampler connecting piece and the trigger part fixing piece are both of a casing structure which is not completely closed in the circumferential direction; the sampler connecting shell and the trigger part fixing shell are respectively sleeved outside the outer shell of the corresponding fluid sampler, and a detachable adapter pair is arranged between the upper end part and the lower end part of the outer shell of the fluid sampler and the corresponding sampler connecting shell and/or the trigger part fixing shell.

Preferably, the tip of outside casing is provided with the lug that outwards extends the formation, the sample thief connecting shell and/or seted up the locking groove on the fixed shell of trigger part respectively, the locking groove has the insertion section and the locking section that the intercommunication set up, the insertion section is followed first direction extends to corresponding shell structure edge, the locking groove with the lug is found the detachable adaptation is vice.

According to the scheme, a fluid sampler based on a sampling bottle is developed, specifically, a bottle stopper is placed in a bottle stopper mounting part of a bottle stopper clamp, the clamp mounting and pre-fixing of the bottle stopper are realized by using the bottle stopper clamp, and an opening working position is kept by using a clamping limiting pair between a transmission part and the bottle stopper clamp; in this state, the elastic reset piece arranged between the outside of the bottle plug clamp and the outer shell deforms to store energy. When the driving medium switches to the opening work position, the spacing pair of block between driving medium and the bottle plug pincers breaks away from, and meanwhile, elasticity resets and releases the deformation ability to the effort that resets that provides the bottle plug pincers switch to the closed work position. The bottle plug and the sampling bottleneck are in closed adaptation in the closed state, the fluid in the bottle is the sample of sampling, and the sampling bottle can be submitted for inspection after being taken down from the outer shell. Compared with the prior art, the scheme has the following beneficial technical effects:

firstly, the elastic reset piece providing the closing reset acting force of the bottle stopper clamp is positioned between the outer part of the bottle stopper clamp and the outer shell, namely positioned outside the sampling bottle; by the arrangement, on one hand, the possibility that the reset spring is arranged in the sampling bottle to pollute the sample can be completely avoided; meanwhile, the elastic reset piece, the external shell, the bottle plug pliers and the external shell are reused for multiple times, so that the production and use costs can be effectively reduced.

Secondly, this scheme utilizes bottle plug pincers to realize that the pincers dress of bottle plug is fixed in advance, during the operation with the bottle plug put into bottle plug pincers the bottle plug installation department can, the in-process need not to make the material get rid of and handles. The method has better operability and can greatly reduce the sampling time; simultaneously, the elasticity that corresponds the setting by with the bottle plug pincers provides the effort during reseing, provides good technical guarantee for guaranteeing the sample leakproofness to the unqualified risk of sample has been reduced.

Thirdly, based on the characteristics of clamp pre-fixing, the structure and the size of the bottle stopper do not need to be thickened or designed in a special structure, the production and use cost can be further reduced, and the bottle stopper has better detection operability.

Finally, based on the setting that can break away from the spacing vice of block, to the sampling bottle that has two upper and lower bottlenecks, the driving medium single direction action in this scheme can switch to closed work position. Has the characteristics of simple structure and controllable production and manufacturing cost.

Drawings

FIG. 1 is a schematic diagram of a typical purely physical passive sampler of the prior art;

FIG. 2 is a schematic diagram of the overall structure of a sample bottle according to an embodiment;

FIG. 3 is a perspective view of the fluid sampler according to one embodiment in an open state;

FIG. 4 is a schematic view of the outer housing shown in FIG. 3;

FIG. 5 is a view taken along line A of FIG. 3;

FIG. 6 is a schematic diagram of a post-sampling state of the fluid sampler shown in FIG. 3;

FIG. 7 is an exploded view of the assembly of the fluid sampler according to one embodiment;

FIG. 8 is a schematic view showing the assembled relationship of the bottle stopper, the bottle stopper clamp and the elastic restoring member according to the first embodiment;

FIG. 9 is a schematic view of the overall structure of a fluid sampler assembly according to one embodiment;

FIG. 10 is an exploded assembly view of the fluid sampler assembly of FIG. 9;

FIG. 11 is a schematic view showing an opened state of some of the components of the fluid sampler according to the second embodiment;

fig. 12 is a schematic view of a closed state of the part member shown in fig. 11.

In fig. 3-10:

the sampling bottle comprises a sampling bottle 11, an upper bottle plug 12, a bottle plug bottom 12-1, a sealing ring 12-2, a bottle plug top 12-3, a lower bottle plug 13, an upper bottle cap 14 and a lower bottle cap 15; the bottle body comprises an outer shell 2, a bottle body accommodating cavity 2-1, an end face through hole 2-2, a supporting part 2-3, a sliding groove 2-4, a pivot hole 2-5 and a bump 2-6; an upper bottle stopper clamp 31, a lower bottle stopper clamp 32, a clamp claw 3-1, a bottom plate 3-2, a vertical plate 3-3, an insertion hole 3-3-1, a spring vertical fixing hole 3-3-2, a spring fixing seat 3-4 and a spring transverse fixing hole 3-4-1; an upper torsion spring 41, a lower torsion spring 42; a transmission piece 5, a rod body 5-1, an upper support rod 5-2 and a lower support rod 5-3; a middle shaft 6; the gas spring 7, the telescopic rod 71 and the traction rope 72; the sampler connecting shell 8, an upper locking groove 8-1 and a lower locking groove 8-2; a traction rope 9, a trigger part fixing shell 10 and a locking groove 10-1;

in fig. 11-12:

the bottle stopper comprises a transition piece 2-7', a sliding adapting part 2-7-1', a stopping part 2-7-2', an upper bottle stopper clamp 31', a lower bottle stopper clamp 32', a pressure spring guide cylinder 3-1', an upper pressure spring 41', a lower pressure spring 42', a transmission piece 5', a sliding part 5-1', a clamping part 5-2 'and a triggering elastic piece 6'.

Detailed Description

In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.

The passive fluid sampler provided by the embodiment has the advantages that the sampling bottle with the opening is placed in fluid at a target position, and after the fluid is stable, the bottle opening can be triggered to be closed by a mechanism and taken out for direct inspection. The core of the scheme is that the elastic reset piece for providing the closing acting force is positioned outside the bottle stopper clamp, and the bottle stopper only has a single bottle opening sealing function; therefore, after the bottle mouth of the sampling bottle is matched with the bottle stopper in a sealing way, no other foreign matters which can influence the detection result exist in the bottle.

Specifically, the fluid sampler mainly comprises an external shell, a bottle plug clamp, an elastic resetting piece and a transmission piece, wherein a bottle body accommodating cavity of the external shell is provided with an end surface through hole which is correspondingly arranged with a bottle opening of a sampling bottle; the bottle plug clamper is in outside casing the terminal surface through hole outside to for outside casing switch between opening the work position and closed work position, be provided with the bottle plug installation department on the bottle plug pincers, and configure into: the bottle stopper arranged on the bottle stopper clamp positioned at the closed working position is matched with the bottle mouth of the sampling bottle in a sealing way; wherein, elasticity resets and arranges in between the outside of bottle stopper pincers and outside casing to the configuration is: when the bottle stopper clamp is switched to the opening working position, the elastic resetting piece is stressed and deformed, elastic deformation energy is stored, and the deformation energy can be released, so that a resetting acting force for switching the bottle stopper clamp to the closing working position is provided; wherein, the driving medium can switch between opening the work position and closing the work position for outside casing, and has the spacing vice of detachable block between driving medium and the bottle stopper pincers to the configuration is: when the transmission member is switched to the opening working position, the bottle stopper clamp can be kept at the opening working position through the clamping limiting pair, and when the sampling bottle is placed into fluid at the target position, the transmission member is utilized to keep the bottle stopper and the bottle stopper clamp in an opening state; when the transmission part is switched to the closed working position, the clamping limiting pair is separated so that the bottle stopper clamp can be switched to the closed working position. In-process, by lieing in the outside elasticity of sampling bottle and reset the piece and provide the spacing vice separation of block, the bottle plug can closely be closed at the bottleneck and keep the leakproofness. In this way, a non-perturbing sampling process is performed in the fluid, and the collected sample may well represent the fluid in the environment at the target depth.

Without loss of generality, the following embodiments will respectively use the sampling bottle with double bottle mouths as a description main body, and the construction and configuration relationship of the passive fluid sampler and the corresponding operation components are explained in detail. As shown in the combined figure 2, two bottle mouths of the sampling bottle shown in the figure are arranged vertically and oppositely, and are respectively and correspondingly provided with a bottle plug and a bottle cap, wherein the bottle plug and a plugging mode are in sealed adaptation with the bottle mouths, and the bottle cap can be in screwed sealed adaptation with internal threads and external threads of the bottle mouths.

Under different sampling environmental conditions, if a sample preserving fluid, such as a hydrochloric acid solution and ascorbic acid, needs to be added, the mixture is injected from a bottle cap by a needle tube. The upper bottle cap and the lower bottle cap are top-empty bottle caps for standard detection, and the upper bottle cap and the lower bottle cap are made of elastic inert materials. It should be understood that the bottle cap does not substantially limit the claimed technical solution, and the bottle cap can be selectively used without affecting the cleanliness of the sample during the actual sampling operation.

It should be noted that the terms "upper" and "lower" used herein are defined by the relative positions of the components shown in the drawings, and of course, in the actual downhole application, the fluid sampler is not limited to the absolute vertical posture shown in the drawings; in addition, the terms "outer" and "inner" are used herein as a basis for defining the sample bottle. It is to be understood that the use of the above directional terms is merely used to clarify the dynamic fit relationship between the components.

The first embodiment is as follows:

referring to fig. 3, the fluid sampler of the present embodiment is shown in an open state.

The outer shell 2 of the sampler is used as a basic component for placing the sampling bottle 11 and is also used for assembling components such as bottle stopper pincers (upper bottle stopper pincers 31 and lower bottle stopper pincers 32) and elastic resetting pieces (upper elastic resetting pieces 41 and lower elastic resetting pieces 42). As shown, vial receiving chamber 2-1 of outer housing 2 has a through-opening 2-2 disposed in correspondence with the mouth of sample vial 11, where the two through-openings 2-2 are disposed opposite one another in a first direction X to establish a through-bore and/or stopper (12, 13) passage. Wherein, the first direction is perpendicular to the plane of the end face of the outer shell 3, that is, is substantially consistent with the length direction of the sampling bottle body.

The inner wall of one side of the outer shell 2 is provided with a supporting part 2-3 formed by extending inwards, and in a projection plane perpendicular to the first direction, the inner edge contour of the supporting part 2-3 is positioned outside the outer contour of the bottleneck of the sampling bottle 11; that is, the sampling bottle 11 can be inserted into the bottle body accommodating cavity 2-1 of the outer shell 2 from the other side without the support part 2-3, and the support part 2-3 forms a limit for the shoulder of the sampling bottle 11, so that the normal closing operation of the bottle mouth is not affected while the sampling bottle 11 is prevented from sliding out.

Correspondingly, the upper cork vice 31 and the lower cork vice 32 are respectively located outside the corresponding end through opening 2-2 of the outer housing 2 to switch between an open working position and a closed working position with respect to the outer housing 2, please refer to fig. 3 and 5 together, and fig. 5 is a schematic view of the open working state shown from a direction of fig. 3. Wherein, be provided with bottle stopper installation department (3-1) on last bottle stopper pincers 31 and the lower bottle stopper pincers 32, the specific configuration is: an upper bottle stopper 12 arranged on an upper bottle stopper clamp 31 positioned at a closed working position is in sealing fit with an upper bottle mouth of a sampling bottle 11, and a lower bottle stopper 13 arranged on a lower bottle stopper clamp 32 is in sealing fit with a lower bottle mouth of the sampling bottle 11, please refer to fig. 6 together, and fig. 6 shows a state after sampling of the fluid sampler, namely a closed working state.

The elastic reset pieces of the scheme are correspondingly arranged into two. Wherein, go up elasticity and reset piece (41) and place between the outside of last bottle plug pincers 31 and outside casing 2, lower elasticity resets piece (42) and places between the outside of lower bottle plug pincers 32 and outside casing 2, and the specific configuration is: when the bottle cork tongs are switched to the open working position shown in fig. 5, the corresponding elastic resetting piece is stressed and deformed, elastic deformation energy is stored, and the deformation energy can be released to provide resetting acting force for switching the corresponding bottle cork tongs to the closed working position shown in fig. 6. According to the scheme, the elastic reset piece is arranged outside the sampling bottle 11, so that the possibility that the reset spring is arranged in the sampling bottle to pollute the sample can be completely avoided; meanwhile, the elastic reset piece, the external shell, the bottle plug pliers and the external shell are reused for multiple times, so that the use cost can be greatly reduced.

The driving medium 5 is as the transmission component of bottleneck closing force, can switch between opening the work position and closing the work position for outside casing 2, and forms the spacing pair of detachable block respectively between the upper and lower both ends of this driving medium 5 and last bottle plug pincers 31 and lower bottle plug pincers 32, specifically configures to: when the transmission member 5 is switched to the working position shown in fig. 3, the upper bottle stopper pliers 31 and the lower bottle stopper pliers 32 are respectively kept at the opening working position through the corresponding clamping limiting pairs; when the transmission member 5 is switched to the closed working position shown in fig. 6, the engagement limit pair is disengaged so that the upper bottle stopper clamp 31 and the lower bottle stopper clamp 32 are respectively switched to the closed working position. That is to say, for two bottleneck sampling bottle 2, transmission member 5 unidirectional action can switch promptly and go up, lower bottle plug pincers synchronous to closed work position, and the structure is simple more reasonable.

As previously mentioned, the present solution, such as but not limited to the above and below two finish sample bottle configurations, is preferably exemplified. Theoretically, the bottle mouth is provided with one (upper opening) which can also finish sampling, and the corresponding components can be alternatively configured according to the adaptive relationship. In comparison, the arrangement of the upper and lower bottle openings is beneficial to the full mixing of the fluid flowing into the bottle body from the lower part.

In order to simplify the structure on the basis of meeting the basic function and reasonably control the production and processing cost of components, the upper bottle stopper pliers 31 and the lower bottle stopper pliers 32 can be further structurally optimized. Referring to fig. 7 and 8 together, fig. 7 is an exploded view of the assembly of the fluid sampler of the present embodiment, and fig. 8 shows the assembly relationship between the bottle stopper, the bottle stopper clamp and the elastic restoring member.

In the scheme, the bottle stopper pliers (31, 32) comprise a bottom plate 3-2, the outer edge of the bottom plate 3-2 is provided with a claw 3-1, and a bottle stopper mounting part for clamping and placing a bottle stopper is formed by utilizing the claw 3-1. When the bottle stopper clamping device is used specifically, the upper bottle stopper 12 is placed at the jaw position of the upper bottle stopper clamp 31, the lower bottle stopper 13 is placed at the jaw position of the lower bottle stopper clamp 32, and three jaws 3-1 are arranged at intervals in the drawing so as to reliably clamp and fix the bottle stopper. It should be noted that the number of the jaws 3-1 is not limited to three as shown in the drawings, and it is within the scope of the present application as long as the function requirement of reliable clamping and fixing can be satisfied.

In addition, the bottle plug mounting part is not limited to the jaw type shown in the figure, and a quick-release auxiliary tool can be adopted in practice as long as the detachable pre-mounting and fixing bottle plug is met.

In this solution, the transmission member 5 needs to be relatively displaced with respect to the outer casing 2 after the external force is triggered, so as to reliably achieve the operation of closing the bottle mouth. In order to further obtain good actuating performance, it is preferable that the transmission member 5 is of a rod structure, and a sliding groove 2-4 is formed in the outer surface of the outer casing 2 along the first direction X, and the middle rod 5-1 of the transmission member 5 is disposed in the sliding groove 2-4 in the surface of the outer casing 2 and linearly displaceable in the sliding groove 2-4 along the first direction X to switch between the open working position and the closed working position relative to the outer casing 2. In addition, the cross sections of the middle section rod bodies 5-1 of the sliding grooves 2-4 and the transmission part 5 are not circular, so that the stable switching of the working positions of the transmission part 5 on the set track without torsion can be ensured based on the guiding effect of the sliding grooves 2-4 on the rod bodies 5-1.

It can be understood that the detachable snap-fit stop pair requires assembly by an operator prior to sampling, and operability can be ensured through structural design. The upper end part and the lower end part of the rod body 5-1 of the transmission part 5 are respectively provided with an upper supporting rod 5-2 and a lower supporting rod 5-3, correspondingly, the bottom plates 3-2 of the upper bottle cork pliers 31 and the lower bottle cork pliers 32 are respectively provided with an inserting hole 3-3-1, so that the detachable clamping limiting pair is constructed through the supporting rods (5-2 and 5-3) and the inserting holes 3-3-1, the assembly is easy, and the detachment can be quickly realized.

Specifically, the upper support rod 5-2 and the lower support rod 5-3 are formed by bending and extending the rod body 5-1 of the transmission rod 5, and the bending directions of the upper support rod 5-2 and the lower support rod 5-3 at the two end parts are consistent, so that the separation can be synchronously realized along with the switching displacement of the transmission part 5. Preferably, the insertion holes 3-3-1 are opened on a vertical plate 3-3 provided on a bottom plate 3-2 of the bottle stopper clamp, and are configured as follows: when the bottle stopper clamp is positioned at the opening working position shown in fig. 8, the central line of the insertion hole 3-3-1 is arranged along the first direction. Therefore, when the transmission piece 5 is triggered, the upper support rod 5-2 and the lower support rod 5-3 at the rod end part of the transmission piece can be smoothly and quickly separated from the corresponding insertion holes.

Of course, the matching struts and insertion openings can also be arranged in the opposite direction (not shown), i.e. the insertion openings are arranged on the transmission element 5 side and the struts are arranged on the base plate side, which likewise makes it possible to meet the functional requirements of assembly and disassembly by means of the rod-hole insertion arrangement.

Further, the preferred torsional spring that resets of upper and lower elasticity in this scheme: an upper torsion spring 41 and a lower torsion spring 42. Based on the feature that the upper and lower torsion springs are consistent with the related adaptation principle of the corresponding bottle stopper clamp, only the upper torsion spring 41 shown in fig. 8 will be described in detail.

As shown, the two working ends of the upper torsion spring 41 are respectively connected to the outer surface of the outer casing 2 and the outer surface of the bottom plate 3-2 of the upper bottle stopper clamp 41, and ideally, the torsion spring has a pre-deformation amount after being assembled, that is, even in the closed working position, the torsion spring is preset with a basic pre-deformation amount as required to ensure that the bottle mouth closing operation is reliably completed. With reference to fig. 3-6, one working end of the upper torsion spring 41 is abutted against the outer surface of the outer casing 2, and obviously, compared with the way of placing the working end in the outer casing 2, the establishment of the working relationship in the scheme has the characteristics of simple and reasonable structure and easy maintenance.

Wherein, a central shaft 6 is arranged in a spring ring hole of the upper torsion spring 41 in a penetrating way, and the end part of the central shaft 6 is pivoted with the body of the outer shell 2, so that the bottle cork pliers can be switched between an opening working position and a closing working position relative to the outer shell in a rotating way. As shown in fig. 5 and 7, the outer casing 2 has two pivoting holes 2-5 respectively formed therein and adapted to the two ends of the central shaft 6, and may be designed to be pivoted at one side according to specific structural requirements, wherein the two ends are preferably adapted to have better stability. It is confirmed that, in addition to the pivot hole provided at the end of the outer case 2 shown in the drawing, in fact, the pivot hole adapted to the center shaft 6 may be embedded in the inner wall of the bottle body accommodating chamber 2-1, and the design process of the pivot hole at the end is comparatively low in cost and easy to install and clean subsequently.

In addition, in order to fully utilize the structural space to obtain a better product integration level, preferably, a spring fixing seat 3-4 is arranged on the outer surface of the bottom plate 3-2, a spring transverse fixing hole 3-4-1 arranged in parallel with the plate surface of the bottom plate 3-2 is formed in the spring fixing seat 3-4, the corresponding working end of the upper torsion spring 41 is connected to the spring transverse fixing hole 3-4-1 in an inserted mode, the working end of the torsion spring is ensured to be tightly attached to the bottom plate of the bottle stopper clamp, basic limiting is provided through the spring transverse fixing hole 3-4-1, and the possibility of abnormal opening can be completely avoided.

As shown in the figure, the vertical plate 3-3 is positioned on the bottom plate 3-2 at the side close to the middle shaft 6 of the spring fixing seat 3-4, and the vertical plate 3-3 is also provided with a spring vertical fixing hole 3-3-2, so that the corresponding working end of the upper torsion spring 41 is inserted and connected with the spring transverse fixing hole 3-4-1 through the spring vertical fixing hole 3-3-2 arranged on the vertical plate 3-3, the structure is compact on the whole, and the working end of the torsion spring cannot have any relative displacement and torsion.

In addition to the above-mentioned sampler, the present embodiment further provides a fluid sampler assembly, which includes at least two fluid samplers, wherein the independent sealed samples can be obtained by one sampling operation. Referring to fig. 9 and 10, fig. 9 is a schematic diagram illustrating the overall structure of the fluid sampler assembly, and fig. 10 is an exploded view illustrating the assembly of the fluid sampler assembly shown in fig. 9.

The fluid sampling assembly further comprises a triggering part, the triggering part of which is connected to one of the transmission members 5 in order to switch the transmission member 5 from the open working position to the closed working position. For example, but not limited to, the triggering component may be a gas spring 7 that utilizes air pressure to realize relative movement between the shaft and the piston, preferably, a stretching gas spring that is in a shrinking state normally is used, and specifically, a steel cable wrapped by a rubber tube is used to complete shrinking of a stretching rod of the gas spring, in the present embodiment, the stretching rod 7-1 of the gas spring 7 may be connected with one of the transmission members 5 through a pulling rope 7-2, so that triggering, activating, shrinking and completing action switching can be realized. It should be noted that the gas spring 7 is not the core invention of the present application, and a person skilled in the art can select and assemble the gas spring according to actual needs, so details of the internal structure of the gas spring 7 are not described herein.

The fluid sampling assembly further comprises a sampler connector (8) arranged between the outer shells 2 of adjacent fluid samplers, and specifically, the sampler connector is detachably connected with both the outer shells 2; meanwhile, adjacent transmission pieces 5 oppositely arranged along the first direction X are connected by a traction rope 9 so as to be synchronously switched to a closed working position under the action of a gas spring 7. The traction cable 9 prevents the absolutely rigid connection between the two transmission elements 5 from affecting the respective stable opening state. It is understood that the drawings illustrate two samplers as an example, and that the specific connections between the two or more other fluid samplers and so on may be similar.

Additionally, the fluid sampling assembly may further include a trigger member mount (10) for mounting a trigger member (gas spring 7). As shown in the figure, the trigger member fixing member is detachably connected to the outer housing 2 of the fluid sampler located at the outer side in the first direction X, and of course, the expansion rod 71 (trigger portion) of the gas spring 7 is connected to the transmission members 5 of the fluid sampler at the outer side, and thus forms an interlocking with all the transmission members 5. Here, "outside in the first direction X" corresponds to the uppermost or lowermost fluid sampler shown in the drawing, and the trigger fixing member 10 of the present preferred embodiment is provided on the outer case 2 of the uppermost fluid sampler.

Preferably, the sampler connector and the trigger member holder are both of a casing structure which is not completely circumferentially closed, preferably a thin-walled elastic casing. On one hand, the assembly operation is convenient, the size of the thin-wall elastic shell can be slightly smaller than that of the outer shell 2, the thin-wall elastic shell is assembled after being slightly expanded by applying force, and the reliability of an assembly structure can be improved to a certain extent.

Wherein, the sampler connecting shell 8 and the trigger component fixing shell 10 are respectively sleeved outside the outer shell 2 of the corresponding fluid sampler, and a detachable matching pair is arranged between the upper end part and the lower end part of the outer shell 2 of the fluid sampler and the corresponding sampler connecting shell 8 and/or the trigger component fixing shell 10. In particular, the "detachable adapter pair" can be implemented in different structural manners, such as, but not limited to, a projection and a locking groove, which are preferably used in the figures.

The end part of the outer shell 2 is provided with a convex block 2-6 which extends outwards, the sampler connecting shell 8 is provided with an upper locking groove 8-1 and a lower locking groove 8-2, the trigger part fixing shell 10 is also provided with a locking groove 10-1, and by combining the drawing of fig. 9 and the drawing of fig. 10, the locking matching relation between the upper locking groove 8-1, the lower locking groove 8-2 and the locking groove 10-1 and the corresponding convex block 2-6 is the same, the locking grooves are provided with an insertion section and a locking section which are communicated, the insertion section extends to the edge of the corresponding shell structure along the first direction, and during assembly, the convex block is inserted through the insertion section and then relatively rotates to enter the locking section, so that the detachable matching pair can be constructed by the locking groove and the convex block.

The specific steps of using the fluid sampling assembly of this embodiment are described in detail below:

1. the transmission piece 5 is moved downwards along the first direction, so that the upper and lower support rods (5-2, 5-3) are simultaneously inserted into the corresponding insertion holes 3-3-1 of the transmission piece 5 of the upper and lower bottle stopper clamps (31, 32), and at the moment, the bottle stopper clamps and the torsion spring are both in an open state.

2. Placing a sampling bottle 11 into an outer shell 2 and a bottle body accommodating cavity 2-1, and placing an upper bottle stopper (12) and a lower bottle stopper (13) into a jaw 3-1 of a corresponding bottle stopper clamp; if a plurality of samplers are connected in series as shown in the figure, the connection between the upper and lower sampler outer housings 2 is realized by using a sampler connecting shell 8, and specifically, the upper and lower sampler outer housings are respectively locked with an upper locking groove 8-1 and a lower locking groove 8-2 by corresponding lugs 2-6, and the tail ends of the transmission pieces 5 of the upper and lower samplers are connected by a pulling rope 9.

3. The trigger fixing case 10 is locked with the outer case 2 by the protrusions 2-6 and the locking grooves 10-1, and the gas spring 7 is mounted on the trigger fixing case 10.

4. The upper part of the trigger fixing shell 10 is fastened by a rope (not shown, any two symmetrical points on the upper part of the outer shell can be selected as connecting points), and the telescopic rod 71 of the gas spring 7 and the transmission piece 5 are connected by a traction rope 72. The gas spring 7 is now in tension.

5. Slowly putting the sampling assembly into the fluid at a specified position (depth) by using a rope, and fastening the upper end of the rope at the wellhead; the upper end of the steel cable of the gas spring 7 is tied to the inner side of the well lid by paying attention to the fact that the steel cable is not stressed, and therefore the whole sampling assembly cannot be exposed out of the well body.

6. Before sampling, the well cover is opened, and the steel rope of the gas spring 7 is not tightened. Fluid data is collected (in groundwater, water level information is typically collected).

7. Pulling the upper end mechanism of the steel cable to make the telescopic rod 71 of the gas spring 7 contract upwards to drive the transmission member 5 to lift upwards, and the upper and lower support rods of the transmission member 5 are separated from the upper and lower bottle stopper clamps.

8. Under the action of the upper and lower torsion springs (41, 42), the upper and lower bottle stopper pincers, the upper and lower bottle stoppers respectively rotate towards the corresponding bottle openings, and finally the upper and lower bottle stoppers are hermetically matched with the upper and lower bottle openings, and the fluid in the bottle is the sample to be sampled.

9. The upper end of the rope is unwound from the inside of the wellhead while the sampling assembly is slowly lifted out of the fluid by the rope, and the gas spring cable is simultaneously wound up during the process, taking care not to stress the gas spring cable so as to prevent the gas spring 7 from being detached from the trigger part fixing shell 10.

10. The gas spring 7 and the lanyard 72 are disassembled and the trigger member fixing case 10 is removed. If there are a plurality of samplers, the pulling cables 9 are detached from the transmission members 5, and the sampler connecting cases 8 are removed to separate the samplers from each other.

11. In each sampler, the upper and lower stopperers (31, 32) are held in an open position by separating the stopperer and stopperer, respectively, with forceps and moving the drive member (5) downwardly in a first direction. If the sample is to be sent directly to the laboratory, the upper and lower caps (14, 15) are screwed directly to the upper and lower ports, and the sample bottle (11) is removed from the outer housing (2). If the sample is to be transferred to a prepared sample bottle, the sample bottle 11 can be directly taken out of the outer housing 2, and the stopper at one end is opened and poured into the sample bottle.

12. The next sampling is ready and so on, a new sampling bottle 11 or a sampling bottle 11 from which the sample has been poured is placed in the outer housing 2. If the sample is sent directly to the laboratory, the stopper is replaced with a new one.

In the first embodiment, the transmission member 5 performs the working position switching displacement along the first direction X, and the torsion spring is used to provide the rotating reset acting force for the bottle cork pliers. It should be noted that the shifting displacement of the working position of the transmission member is not limited to the first direction, and the opening and closing of the bottle cork pliers can also be realized in a non-rotating manner, specifically, refer to the following second embodiment.

Example two:

the scheme is the same as the core design concept of the embodiment, the elastic resetting piece used for providing the closing acting force is positioned outside the sampling bottle and the bottle stopper pliers and used as a passive collector, and no other foreign matter possibly influencing the detection result exists in the sampling bottle. The main difference is that the drive member 5' of the sampler according to the present solution is displaced in the second direction Y to switch between an open working position and a closed working position with respect to the external casing (not shown in the figures).

Referring to fig. 11 and 12 together, fig. 11 is a schematic view showing an open state of a part of the fluid sampler according to the second embodiment, and fig. 12 is a schematic view showing a closed state of the part of the fluid sampler shown in fig. 11.

In this embodiment, the transmission member 5' has a sliding portion 5-1' located above the through opening on the end surface of the outer housing, and the sliding portion 5-1' is slidably displaceable in the second direction Y with respect to the outer housing 2 to switch between the open working position and the closed working position with respect to the outer housing. Similarly, when the transmission member 5' is switched to the opening working position, the bottle stopper clamp 3' can be kept at the opening working position through the clamping limiting pair, and when the sampling bottle 11 is placed into the fluid at the target position, the bottle stoppers (12 and 13) and the bottle stopper clamps (31' and 32') are kept in the opening state by using the transmission member 5 '; when the transmission member 5' is switched to the closed working position, the clamping limiting pair is disengaged so that the bottle stopper clamp is switched to the closed working position. In the process, the elastic reset piece positioned outside the sampling bottle 11 provides a clamping limiting pair to break away, and the bottle plug can be tightly closed at the bottle opening and keeps the airtightness. Here, the second direction Y is parallel to the plane of the end face of the outer housing, i.e., substantially parallel to the cross section of the bottle body.

The situation that the clamping limiting pair is separated can be realized by displacing the transmission piece 5' along the second direction Y in different modes. For example, but not limited to, the transition piece 2-7' shown in the figures may be fixedly arranged on the outer housing (not shown in the figures) directly or indirectly, and the transition piece 2-7' has a sliding adaptation 2-7-1' arranged in the second direction Y, on which the sliding adaptation 2-7-1' the sliding portion 5-1' of the transmission piece 5' is slidably displaceable in the second direction Y relative to the outer housing, whereby the transition piece 2-7' acts as a sliding displacement bearing structure.

Similarly, the upper stopper jaw 31 'and the lower stopper jaw 32' comprise a bottom plate and a jaw at the outer edge of the bottom plate, which jaw forms said stopper mounting portion. A pressure spring guide cylinder 3-1 'is arranged on the surface of the bottom plate on the opposite side of the jaw along a first direction, and the transmission piece 5' is also provided with a clamping part 5-2', the clamping part 5-2' is formed by extending from the sliding part 5-1 'along the first direction so as to form the clamping limit pair with the pressure spring guide cylinder 3-1'; the elastic reset piece is a compression spring (41', 42') arranged in the compression spring guide cylinder 3-1', as shown in the figure, the upper compression spring 41' is pressed and arranged between the sliding adaptive part of the transition piece 2-7' and the bottom plate of the upper bottle stopper clamp 31', and the lower compression spring 42' is pressed and arranged between the sliding adaptive part of the transition piece 2-7' and the bottom plate of the lower bottle stopper clamp 32 '.

In addition, the clamping limit pair formed between the clamping part 5-2 'of the transmission piece 5' and the pressure spring guide cylinder 3-1 'can also be realized in different modes, and can be reliably separated along with the displacement of the transmission piece 5' along the second direction Y. For example, but not limited to, the engaging portion 5-2' of the driving member 5' and the outer surface of the pressure spring guiding cylinder 3-1', one of the two is provided with a hook (not shown), the other is provided with a bayonet (not shown), and the hook and the bayonet constitute the detachable engaging limit pair.

In this embodiment, the trigger elastic member 6' is adapted to the trigger portion (telescopic rod 71) of the trigger member (gas spring). As further shown in the figure, one end of the sliding adapter 2-7-1 'of the transition piece 2-7' has a stop portion 2-7-2 'arranged along the first direction X, the sliding adapter 2-7-1' is provided with a triggering elastic member 6', which is arranged between the stop portion 2-7-2' and the sliding portion 5-1', and the other side of the sliding portion 5-1' can be pressed against the telescopic rod 71 and is configured as: when the telescopic rod 71 presses against the sliding part 5-1', the elastic part 6' is triggered to deform under stress and elastic deformation energy is stored, as shown in fig. 11, in this state, the clamping part 5-2' of the transmission part 5' is clamped and limited with the pressure spring guide cylinder 3-1', and the upper and lower bottle openings are in an open state; when the telescopic rod 71 is triggered to retract, the elastic triggering part 6' releases the deformation energy to act on the transmission part 5' to provide a reset acting force for switching the sliding part 5-1' to the closed working position, and the clamping limiting pair is separated; meanwhile, the bottle stopper pincers (31', 32') are moved into the corresponding bottle openings along the first direction under the action of the corresponding compression springs (41', 42'), and sealing fit of the bottle stoppers and the bottle openings is achieved.

Of course, the triggering elastic member 6' may preferably be a compression spring, and has a simple structure and relatively low cost.

In addition, based on the characteristic that the opening directions of the upper transmission member 5 'and the lower transmission member 5' are opposite, the fluid sampling assembly formed by the sampler is provided with two gas springs to respectively trigger the upper transmission member 5 'and the lower transmission member 5', and the design of the intermediate member of the mechanism is relatively simple and is the optimal design.

It should be noted that, in the above examples provided by this embodiment, the outer shell may not be completely wrapped around the sampling bottle, and the shape of the bottom plate of the bottle stopper clamp is not limited to the preferred examples shown in the drawings, and it should be understood that the application is within the scope of the present application as long as the technical means consistent with the core concept of this embodiment are adopted.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that it is obvious to those skilled in the art that various modifications and improvements can be made without departing from the principle of the present invention, and these modifications and improvements should also be considered as the protection scope of the present invention.

Claims

1. A fluid sampler, comprising:

the bottle body accommodating cavity of the external shell is provided with an end surface through hole which is correspondingly arranged with the bottle mouth of the sampling bottle;

bottle stopper pincers, be located the outside of outside casing the terminal surface through hole to for outside casing switches between the work position of opening and closed work position, be provided with the bottle stopper installation department on the bottle stopper pincers to the configuration is: the bottle stopper arranged on the bottle stopper clamp positioned at the closed working position is matched with the bottle mouth of the sampling bottle in a sealing way;

an elastic return member disposed between an exterior of the bottle stopper clamp and the outer housing and configured to: when the bottle plug pliers are switched to the opening working position, the elastic resetting piece is stressed and deformed, elastic deformation energy is stored, and the deformation energy can be released to provide a resetting acting force for switching the bottle plug pliers to the closing working position;

the transmission part can be switched between an opening working position and a closing working position relative to the external shell, and a detachable clamping limiting pair is arranged between the transmission part and the bottle plugging pliers and is configured as follows: when the transmission part is switched to an opening working position, the bottle stopper clamp can be kept at the opening working position through the clamping limiting pair; when the transmission part is switched to the closed working position, the clamping limiting pair is separated so that the bottle stopper clamp is switched to the closed working position.

2. The fluid sampler of claim 1, wherein the through-end-face opening comprises two oppositely arranged openings along a first direction, so as to be respectively arranged corresponding to the two openings of the sampling bottle, and the bottle stopper clamp and the elastic reset piece are respectively arranged corresponding to two openings; the first direction is perpendicular to the plane of the end face of the outer shell.

3. The fluid sampler of claim 1 or 2, wherein the drive member has a lever body disposed in a surface slot of the outer housing and is linearly displaceable in the slot in a first direction to switch between an open working position and a closed working position relative to the outer housing; and the cross sections of the sliding groove and the rod body are non-circular.

4. The fluid sampler of claim 3, wherein the stopper clamp includes a base plate and a jaw at an outer edge of the base plate, the jaw forming the stopper mounting portion; the elastic reset piece is a torsion spring, and two working ends of the torsion spring are respectively connected to the outer surface of the outer shell and the outer surface of the bottom plate; and a middle shaft penetrates through a spring ring hole of the torsion spring, and the end part of the middle shaft is pivoted with the body of the external shell, so that the bottle stopper clamp can rotate relative to the external shell and can be switched between an opening working position and a closing working position.

5. The fluid sampler of claim 4, wherein the outer surface of the base plate is provided with a spring fixing seat, the spring fixing seat is provided with a transverse spring fixing hole parallel to the surface of the base plate, and the corresponding working end of the torsion spring is inserted into the transverse spring fixing hole.

6. The fluid sampler of claim 5, wherein the rod of the transmission member and the base plate of the corkscrew are provided with a rod on one side and a hole on the other side, and the rod and the hole constitute the detachable engagement limiting pair.

7. The fluid sampler according to claim 6, wherein the rod body of the driving member is bent and extended to form the supporting rod, and the two supporting rods at the two ends are bent in the same direction; the insertion holes are formed in a vertical plate arranged on a bottom plate of the bottle stopper clamp.

8. The fluid sampler of claim 7, wherein the vertical plate is disposed on the bottom plate of the spring holder on a side close to the central axis, and the vertical plate further has a vertical spring fixing hole, so that the corresponding working end of the torsion spring is inserted into the horizontal spring fixing hole through the vertical spring fixing hole formed in the vertical plate.

9. The fluid sampler of claim 8, wherein the insertion holes in the riser are oriented in a first direction when the corking pliers are in the open position.

10. The fluid sampler of claim 1 or 2, wherein the transmission member has a sliding portion located above the through-opening, the sliding portion being slidably displaceable relative to the outer housing in a second direction to switch between an open working position and a closed working position relative to the outer housing, the second direction being parallel to a plane in which the end face of the outer housing lies.

11. The fluid sampler of claim 10, wherein the outer housing has fixedly disposed thereon a transition piece having a sliding fit disposed along the second direction, the sliding fit being slidably displaceable on the sliding fit relative to the outer housing along the second direction; the bottle stopper pliers comprise a bottom plate and a jaw positioned at the outer edge of the bottom plate, the jaw forms the bottle stopper mounting part, a pressure spring guide cylinder is arranged on the surface of the bottom plate on the opposite side of the jaw along a first direction, and the transmission part is provided with a clamping part arranged from the sliding part along the first direction so as to form a clamping limit pair with the pressure spring guide cylinder; the elastic reset piece is a pressure spring arranged in the pressure spring guide cylinder and is pressed against the sliding adaptive part arranged on the transition piece and the bottom plate of the bottle stopper clamp.

12. The fluid sampler of claim 11, wherein the engaging portion of the driving member and the outer surface of the pressure spring guide cylinder are provided with a hook on one of them and a bayonet on the other, and the hook and the bayonet constitute the detachable engaging limiting pair.

13. The fluid sampler of claim 12, wherein the sliding adapter of the transition piece has a stop portion at one end thereof, the stop portion is disposed along a first direction, the sliding adapter between the stop portion and the sliding portion has a trigger elastic member disposed thereon, and the other side of the sliding portion is capable of pressing against the trigger portion, and is configured to: when the triggering portion presses against the sliding portion, the triggering elastic piece is stressed and deformed, elastic deformation energy is stored, and the deformation energy can be released to provide a reset acting force for switching the sliding portion to a closed working position.

14. The fluid sampler of claim 2, wherein the outer housing has a support portion extending inwardly from an inner wall of the outer housing, and an inner contour of the support portion in a projection plane perpendicular to the first direction is outside an outer contour of a neck of the sample bottle.

15. A fluid sampler assembly comprising at least two fluid samplers, in particular as claimed in any one of claims 1 to 14, further comprising a trigger member and a sampler connector disposed between outer housings of adjacent fluid samplers; the sampler connecting piece is detachably connected with the two outer shells; the triggering part of the triggering part is connected with one of the transmission parts, and the adjacent transmission parts which are oppositely arranged along the first direction are connected by a traction rope so as to be synchronously switched to a closed working position under the action of the triggering part.

16. The fluid sampling assembly of claim 15, further comprising a trigger member mount for mounting a trigger member, the trigger member mount being removably attachable to an outer housing of the fluid sampler that is positioned on an outer side in the first direction, the trigger portion of the trigger member being attachable to a transmission of the fluid sampler on the outer side.

17. The fluid sampling assembly of claim 16, wherein said sampler connector and said trigger member retainer are each a partially circumferentially closed housing structure; the sampler connecting shell and the trigger part fixing shell are respectively sleeved outside the outer shell of the corresponding fluid sampler, and a detachable adapter pair is arranged between the upper end part and the lower end part of the outer shell of the fluid sampler and the corresponding sampler connecting shell and/or the trigger part fixing shell.

18. The fluid sampling assembly of claim 17, wherein the end of the outer housing is provided with a protrusion extending outward, the sampler connecting shell and/or the trigger fixing shell are respectively provided with a locking groove, the locking groove is provided with an insertion section and a locking section which are arranged in a communicating manner, the insertion section extends to the edge of the corresponding housing structure along the first direction, and the locking groove and the protrusion constitute the detachable adapter pair.