CN219456192U - A dispensing device for loading of water sample and preservative - Google Patents

Abstract

The utility model discloses a distributing device for loading a water sample and a preservative, and relates to the technical field of environment monitoring equipment, comprising a frame body, wherein a first platform is arranged on the frame body, a third platform is arranged above the first platform, a second platform is movably arranged between the first platform and the third platform, and the second platform can approach to the first platform under the condition of external force; the sample bottle is arranged on the first platform; the reagent bottles are arranged on the third platform, the arrangement positions and the arrangement quantity of the reagent bottles are in one-to-one correspondence with those of the sample bottles, each reagent bottle is provided with an infusion assembly, the infusion assemblies are connected with the second platform, and the infusion assemblies are used for conveying the preservative loaded in the reagent bottles to the sample bottles; and the liquid dispenser penetrates through the third platform and then is fixed on the second platform, and the liquid dispenser is used for distributing the collected water sample to the sample bottle. The distribution device for loading the water sample and the preservative can automatically and quantitatively load the preservative and uniformly distribute the collected water sample.

Description

A dispensing device for loading of water sample and preservative

Technical Field

The utility model relates to the technical field of environment monitoring equipment, in particular to a distributing device for loading water samples and preserving agents.

Background

In the period from the collection to analysis of the water sample, the sample during analysis is different from the original collected sample due to the physical, chemical and biological effects, and in order to reduce the influence of the change, the detection items need to be added with corresponding preservative to preserve the water sample under the condition that the test cannot be completed on the sampling site. The traditional manual preservative adding mode can not accurately control the adding amount of each reagent, and has low efficiency. Although mechanical sample preservation devices are available in the market, the traditional problem can be effectively solved, the device needs to be electrified, the volume is large, and the device is difficult to apply in some field places without power supply and fixed positions.

Disclosure of Invention

The present utility model aims to solve, at least to some extent, one of the above technical problems in the prior art. Therefore, the embodiment of the utility model provides the distribution device for loading the water sample and the preservative, which can automatically and quantitatively load the preservative and uniformly distribute the collected water sample, is simple to operate, does not need to be powered on, and is suitable for outdoor operation.

The distributing device for loading the water sample and the preservative comprises a frame body, wherein a first platform is arranged on the frame body, a third platform is arranged above the first platform, a second platform is movably arranged between the first platform and the third platform, and the second platform can approach to the first platform under the condition of external force; the plurality of sample bottles are arranged on the first platform; the reagent bottles are arranged on the third platform, the arrangement positions and the arrangement quantity of the reagent bottles are in one-to-one correspondence with the sample bottles, each reagent bottle is provided with an infusion assembly, the infusion assemblies are connected with the second platform, and the infusion assemblies are used for conveying preservative filled in the reagent bottles to the sample bottles; and the dispenser penetrates through the third platform and then is fixed on the second platform, and the dispenser is used for distributing the collected water sample to the sample bottle.

According to the dispensing device for loading the water sample and the preservative, the infusion assembly comprises the first infusion part and the second infusion part, the second infusion part is fixed on the second platform, one end of the first infusion part extends into the reagent bottle, the other end of the first infusion part is connected with the second infusion part in a sliding mode, the end of the second infusion part extends into the containing cavity of the second infusion part and then seals the first liquid outlet of the containing cavity, the first liquid outlet faces to the bottle mouth of the sample bottle, and the reagent bottle is communicated with the outside.

According to the distribution device for loading the water sample and the preservative, the first infusion part is provided with the infusion channel which is communicated with the containing cavity and the inside of the reagent bottle, the reagent bottle is inversely arranged on the third platform, the second liquid outlet of the infusion channel is positioned in the containing cavity, and the liquid inlet of the infusion channel is leveled with the bottle mouth of the reagent bottle.

According to the dispensing device for loading the water sample and the preservative, the infusion assembly further comprises a first guide pipe, the first guide pipe is inserted into the bottle cap of the reagent bottle, and one end of the first guide pipe, which enters the reagent bottle, extends to be close to the bottom of the reagent bottle.

According to the distributing device for loading the water sample and the preservative, the rubber part is sleeved on the bottle cap of the reagent bottle, the first through hole for embedding the rubber part is formed in the third platform, and the second through hole for allowing the dispenser to pass through is further formed in the third platform.

According to the distribution device for loading the water sample and the preservative, the second infusion part is provided with the notch for inserting the first infusion part, and the notch and the first liquid outlet are both provided with the sealing rings, wherein the first infusion part is made of polytetrafluoroethylene, and the second infusion part is made of glass.

According to the distributing device for loading the water sample and the preservative, the first platform is provided with the plurality of groups of adjusting components, the adjusting components comprise the supporting rods, the supporting rods are vertically arranged, one ends of the supporting rods are detachably connected with the first platform, and the third platform is detachably connected with the other ends of the supporting rods.

According to the distributing device for loading the water sample and the preservative, the adjusting assembly further comprises an elastic piece and a gasket, the second platform and the gasket are sleeved on the supporting rod, one end of the elastic piece abuts against the first platform, the other end of the elastic piece presses the gasket towards the second platform, and the elastic piece is a spring.

According to the distributing device for loading the water sample and the preservative, the adjusting component further comprises two first connecting pieces and two second connecting pieces, the supporting rods are inserted into the first platform, the two first connecting pieces are respectively arranged on two sides of the first platform and are in threaded connection with the supporting rods, the supporting rods are inserted into the third platform, and the two second connecting pieces are respectively arranged on two sides of the third platform and are in threaded connection with the supporting rods.

According to the distributing device for loading the water sample and the preservative, the liquid separator is funnel-shaped, a plurality of second guide pipes are distributed on the bottom array of the liquid separator, the number of the second guide pipes is the same as that of the sample bottles, and the third liquid outlets of the second guide pipes extend to the upper portion of the bottle mouths of the sample bottles.

Based on the technical scheme, the embodiment of the utility model has at least the following beneficial effects: according to the technical scheme, when the environmental water sample is collected and stored, the sample bottle is used for taking the water sample in the environment to be measured, after the sample bottle is filled, the sample bottle is inverted in the liquid separator, the water sample in the sample bottle is uniformly distributed into each sample bottle through the liquid separator, the water sample distribution process is equal in quantity and constant in speed, the whole weight of the liquid separator is increased due to the fact that the sample bottle and the collected water sample are loaded on the liquid separator, the increased weight acts on the second platform, the second platform drives the infusion assembly to act so as to convey the preservative in the reagent bottle corresponding to each sample bottle to the sample bottle to be mixed with the water sample, at the moment, the water sample and the preservative are simultaneously fed into the sample bottle and uniformly mixed together, after the water sample distribution on the liquid separator is completed, the weight acting on the second platform is gradually weakened, the second platform returns to the original position, the weight of the sample bottle alone cannot trigger the second platform to generate displacement, at the moment, and the corresponding infusion assembly also breaks off the conveying of the preservative, and automatic quantitative loading of the preservative is realized. Compared with the prior art, the distribution device for loading the water sample and the preservative can automatically distribute the water sample and quantitatively load the preservative, has a simple structure and is easy to operate, does not need to be powered on, and is suitable for outdoor operation.

Drawings

The utility model is further described below with reference to the drawings and examples;

FIG. 1 is a schematic diagram of a first embodiment of the present utility model;

FIG. 2 is a second schematic diagram of an embodiment of the present utility model;

FIG. 3 is a schematic diagram of a third embodiment of the present utility model;

FIG. 4 is a schematic view of a dispenser according to an embodiment of the present utility model;

FIG. 5 is a schematic view of the structure of an adjusting assembly according to an embodiment of the present utility model;

FIG. 6 is a schematic diagram of a fourth embodiment of the present utility model;

FIG. 7 is an enlarged schematic view at A in FIG. 2;

fig. 8 is an enlarged schematic view at B in fig. 3.

Detailed Description

Reference will now be made in detail to the present embodiments of the present utility model, examples of which are illustrated in the accompanying drawings, wherein the accompanying drawings are used to supplement the description of the written description so that one can intuitively and intuitively understand each technical feature and overall technical scheme of the present utility model, but not to limit the scope of the present utility model.

In the description of the present utility model, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present utility model and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.

In the period from the collection to analysis of the water sample, the sample during analysis is different from the original collected sample due to the physical, chemical and biological effects, so that the preservation of the water sample needs to be added with a preservative according to the preservation and management technical regulations of the water quality sample of HJ493-2009 and the requirements of conventional manual sampling in order to reduce the influence of the change, thereby meeting the requirement of long-time preservation of the water sample and fully ensuring the representativeness of the water sample in the actual water sample analysis process. The traditional manual preservative adding mode can not accurately control the adding amount of each reagent, and has low efficiency. Although mechanical sample preservation devices are available in the market, the traditional problem can be effectively solved, the device needs to be electrified, the volume is large, and the device is difficult to apply in some field places without power supply and fixed positions.

To this end, referring to fig. 1 to 3, an embodiment of the present utility model provides a dispensing device for loading water samples and a preservative, which specifically includes a rack 100, a plurality of sample bottles 430, a plurality of reagent bottles 410, and a dispenser 300.

Specifically, the frame body 100 is provided with a first platform 110, and a third platform 130 is erected above the first platform 110, wherein a second platform 120 is movably arranged between the first platform 110 and the third platform 130, and the second platform 120 can approach to the first platform 110 under the condition of external force; the plurality of sample bottles 430 are arranged below the first platform 110, the plurality of reagent bottles 410 are arranged above the third platform 130, the arrangement positions and the arrangement numbers of the reagent bottles 410 are in one-to-one correspondence with the sample bottles 430, each reagent bottle 410 is provided with an infusion assembly, the infusion assembly is connected with the second platform 120 and used for conveying the preservative in the reagent bottle 410 to the sample bottle 430, the dispenser 300 penetrates through the third platform 130 and then is fixed on the second platform 120, and the dispenser 300 is mainly used for uniformly and equally distributing the collected water sample to the sample bottle 430.

When the collection and preservation of environmental water samples are carried out, the sample loading bottle 420 is used for loading the water samples in the environment to be measured, after the sample loading bottle 420 is filled, the sample loading bottle 420 is inverted into the liquid dispenser 300, the water samples in the sample loading bottle 420 are uniformly distributed into each sample bottle 430 through the liquid dispenser 300, the water samples are distributed in equal quantity and at equal speed, the whole weight of the liquid dispenser 300 is increased due to the fact that the sample loading bottle 420 and the collected water samples are loaded on the liquid dispenser 300, the increased weight acts on the second platform 120 due to the fact that the weight acts on the weight of the liquid dispenser 300, the second platform 120 drives the transfusion assembly to act to convey the preservative in the reagent bottle 410 corresponding to each sample bottle 430 to the sample bottle 430 to be mixed with the water samples, at the moment, the water samples and the preservative are simultaneously fed into the sample bottles 430 and uniformly mixed together, after the water samples on the liquid dispenser 300 are distributed, the weight acting on the second platform 120 is gradually weakened, the weight of the water samples on the second platform 120 returns to the original position, the weight of the sample loading bottle 420 alone cannot trigger the second platform 120 to generate displacement, and at the moment, the corresponding transfusion assembly is disconnected to automatically quantitatively convey the preservative without manual intervention. Compared with the prior art, the water sample and preservative loading distributing device can automatically distribute the water sample and quantitatively load the preservative, can be uniformly mixed in the water sample and preservative loading process, is simple in structure and operation, does not need to be powered on, and is suitable for outdoor operation.

In this embodiment, the frame body 100 includes the rectangular body that forms by square aluminum alloy strip welding, and first platform 110 sets up in the middle part of frame body 100, and frame body 100 uses first platform 110 as the boundary, and the side of the first half of frame body 100 adopts the plastic slab to surround, and the latter half does not set up the plastic slab, and first platform 110, second platform 120 and third platform 130 are made by the PVC material, and holistic weight is no more than 10kg, conveniently carries, is applicable to outdoor operation.

In some embodiments, the first platform 110 has several groups of adjusting assemblies 200, as shown in fig. 5, the adjusting assemblies 200 include supporting rods 210, the supporting rods 210 are vertically disposed, one end of each supporting rod 210 is detachably connected to the first platform 110, the third platform 130 is detachably connected to the other end of each supporting rod 210, and the third platform 130 is supported by a plurality of supporting rods 210, so that the third platform 130 can be erected above the first platform 110.

Further, the adjusting assembly 200 further includes an elastic member 230 and a spacer 220, where the second platform 120 and the spacer 220 are both sleeved on the supporting rod 210, one end of the elastic member 230 abuts against the first platform 110, the other end presses the spacer 220 against the second platform 120, so that the second platform 120 can perform linear reciprocating motion under the guiding action of the supporting rod 210, and the elastic member 230 is disposed, so that the second platform 120 is under the action of the vertical downward external force, the second platform 120 drives the spacer 220 to compress the elastic member 230 against the first platform 110, and after the external force disappears, the elastic member 230 drives the second platform 120 to return to the original position, where the elastic member 230 is preferably a spring, and the spring is sleeved on the supporting rod 210.

Further, the adjusting assembly 200 further includes two first connecting members 240 and two second connecting members 250, the supporting rod 210 is inserted into the first platform 110, the first platform 110 has a hole for the supporting rod 210 to pass through, the two first connecting members 240 are respectively disposed at two sides of the first platform 110 and are in threaded connection with the supporting rod 210, and the two first connecting members 240 are close to each other in opposite directions through threaded cooperation between the first connecting members 240 and the supporting rod 210 so as to clamp the first platform 110, thereby fixing the supporting rod 210 on the first platform 110. In addition, the support rod 210 is inserted into the third platform 130, the third platform 130 also has a hole through which the support rod 210 passes, two second connecting pieces 250 are respectively disposed at two sides of the third platform 130 and are in threaded connection with the support rod 210, and the two second connecting pieces 250 are close to each other in opposite directions through threaded cooperation between the second connecting pieces 250 and the support rod 210 so as to clamp the third platform 130, so that the support rod 210 is fixedly connected with the third platform 130. In this embodiment, the support rod 210 is preferably a stud, the first connecting member 240 and the second connecting member 250 may be nuts, and the first connecting member 240 and the second connecting member 250 are arranged to conveniently adjust the distance between the first platform 110 and the third platform 130, and are also convenient to detach.

As shown in fig. 7, the infusion assembly includes a first infusion part 520 and a second infusion part 530, the second infusion part 530 is fixed on the second platform 120, one end of the first infusion part 520 extends into the reagent bottle 410, the other end is slidably connected with the second infusion part 530, the second infusion part 530 is communicated with the reagent bottle 410 through the first infusion part 520, the end of the second infusion part 530 extends into the cavity 531 of the second infusion part 530 and then seals the first liquid outlet 532 of the cavity 531, the first liquid outlet 532 is opposite to the bottle mouth of the sample bottle 430, and the reagent bottle 410 is communicated with the outside. Under normal conditions, the reagent bottle 410 is filled with the preservative, the end part of the first infusion part 520 seals the first liquid outlet 532 of the cavity 531, when the sample bottle 420 filled with the water sample is inverted in the dispenser 300, the weight of the dispenser 300 is increased, the increased weight acts as gravity to drive the second platform 120 to compress the elastic part 230, in the process of moving down the second platform 120, the second platform 120 drives the second infusion part 530 to move down, the second infusion part 530 and the first infusion part 520 move relatively, so that the end part of the first infusion part 520 is not used for sealing the first liquid outlet 532, and the first liquid outlet 532 is communicated with the atmospheric pressure, and because the position of the first liquid outlet 532 is lower than the position of the reagent bottle 410 communicated with the outside, under the dual action of the atmospheric pressure and the gravity of the preservative, the preservative in the reagent bottle 410 is driven to be conveyed into the cavity 531 through the first infusion part 520, and then the preservative flows into the sample bottle 430 from the first liquid outlet 532 of the cavity 531, and at the same time, and the water sample bottle 430 is simultaneously added with the preservative, so that uniform mixing of the water sample is realized; when the external force applied to the second platform 120 disappears after the water sample is distributed by the dispenser 300, the elastic member 230 drives the second platform 120 to move back to the original position under the action of elastic potential energy, and at this time, the end of the first infusion part 520 is restored to seal the first liquid outlet 532 of the cavity 531, so as to realize automatic control of the loading of the preservative.

Further, the first infusion part 520 is provided with an infusion channel 521 which is communicated with the cavity 531 and the inside of the reagent bottle 410, the reagent bottle 410 is inversely installed on the third platform 130, the second liquid outlet 522 of the infusion channel 521 is located in the cavity 531, and the liquid inlet of the infusion channel 521 is leveled with the bottle mouth of the reagent bottle 410, wherein, if the reagent bottle 410 is inversely installed, the air inlet of the reagent bottle 410, which is communicated with the external atmospheric pressure, can be arranged at the bottle bottom, so as to conveniently supplement the preservative into the reagent bottle 410, and the air inlet of the reagent bottle 410, which is communicated with the external atmospheric pressure, can also be arranged on the side wall of the reagent bottle 410, and the requirement is that the air inlet, which is required to keep the reagent bottle 410, is communicated with the external atmospheric pressure, is higher than the liquid inlet of the infusion channel 521.

In this embodiment, preferably, the infusion set further includes a first tube 510, the first tube 510 is inserted into a bottle cap of the reagent bottle 410, one end of the first tube 510 entering the reagent bottle 410 extends to be close to the bottom of the reagent bottle 410, the interior of the reagent bottle 410 is communicated with the outside through the first tube 510, after the first liquid outlet 532 is ensured to be unblocked, the preservative in the reagent bottle 410 can be quantified by using the atmospheric pressure, and the transported sample bottle 430 is transported.

Preferably, the cover of the bottle cap of the reagent bottle 410 is provided with a rubber member 131, the third platform 130 is provided with a first through hole for embedding the rubber member 131, the first through hole is convenient to detach the reagent bottle 410 to supplement the preservative with the embedded design of the rubber member 131, and in addition, the third platform 130 is also provided with a second through hole for the dispenser 300 to pass through, so that the dispenser 300 is prevented from interfering with the third platform 130 when following the second platform 120 to lift up and down.

Preferably, the second infusion part 530 has a notch for the first infusion part 520 to insert, the notch and the first liquid outlet 532 are both provided with sealing rings, specifically, the wall surfaces of the notch and the first liquid outlet 532 are both provided with channels for clamping the sealing rings, after the sealing rings are clamped in the channels, part of the sealing rings enter the notch or the first liquid outlet 532, when the first infusion part 520 passes through the notch or the first liquid outlet 532, the sealing rings are in interference fit with the first infusion part 520, so that gaps of the notch or the first liquid outlet 532 can be filled, a good sealing effect is achieved, and the situation that liquid leakage or air leakage occurs when the first infusion part 520 and the second infusion part 530 move relatively is avoided.

In other embodiments, as shown in fig. 4 and 6, the dispenser 300 is funnel-shaped, a plurality of second conduits 310 are distributed at the bottom array of the dispenser 300, the number of the second conduits 310 is the same as that of the sample bottles 430, each second conduit 310 is communicated with the second conduit 310, the height of the position inside the dispenser 300 is the same, the third liquid outlet of the second conduit 310 extends to the upper part of the bottle mouth of the sample bottle 430, one second conduit 310 corresponds to one sample bottle 430, so that water samples are uniformly and equivalently distributed into each sample bottle 430, specifically, a hollowed-out hole is formed in the position, facing the first liquid outlet 532, of the first platform 110, the sample bottle 430 can be fixedly connected with the first platform 110, or can be directly placed below the hollowed-out hole, a cross silica gel pad 111 is arranged on the hollowed-out hole for hanging the second conduit 310, further, a liquid outlet 330 is further arranged at the bottom of the dispenser 300, a rubber sleeve is sleeved on the liquid outlet 330, and the residual water samples in the dispenser 300 can be quickly emptied, and the dispenser 300 can be quickly cleaned.

The embodiments of the present utility model have been described in detail with reference to the accompanying drawings, but the present utility model is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present utility model.

Claims (10)

1. A dispensing device for loading of water sample and preservative, characterized in that: comprising

The frame body (100), be provided with first platform (110) on the frame body (100), the top of first platform (110) is erect and is equipped with third platform (130), wherein, first platform (110) with activity is provided with second platform (120) between third platform (130), second platform (120) can be towards first platform (110) are close to under the condition of receiving external force;

a plurality of sample bottles (430) disposed on the first platform (110);

the reagent bottles (410) are arranged on the third platform (130), the arrangement positions and the arrangement numbers of the reagent bottles (410) are in one-to-one correspondence with the sample bottles (430), each reagent bottle (410) is provided with an infusion assembly, the infusion assemblies are connected with the second platform (120), and the infusion assemblies are used for conveying the preservative loaded in the reagent bottles (410) to the sample bottles (430); and

and the dispenser (300) is fixed on the second platform (120) after penetrating through the third platform (130), and the dispenser (300) is used for distributing the collected water sample to the sample bottle (430).

2. The dispensing device for loading of water samples and preservatives according to claim 1 wherein: the infusion assembly comprises a first infusion part (520) and a second infusion part (530), the second infusion part (530) is fixed on the second platform (120), one end of the first infusion part (520) stretches into the reagent bottle (410), the other end of the first infusion part is connected with the second infusion part (530) in a sliding mode, the end part of the second infusion part (530) stretches into a containing cavity (531) of the second infusion part (530) and then is sealed with a first liquid outlet (532) of the containing cavity (531), and the first liquid outlet (532) is opposite to a bottle opening of the sample bottle (430), wherein the reagent bottle (410) is communicated with the outside.

3. A dispensing device for water sample and preservative loading according to claim 2, wherein: the first infusion part (520) is provided with an infusion channel (521) which is communicated with the cavity (531) and the inside of the reagent bottle (410), the reagent bottle (410) is inversely arranged on the third platform (130), a second liquid outlet (522) of the infusion channel (521) is positioned in the cavity (531), and a liquid inlet of the infusion channel (521) is leveled with a bottle opening of the reagent bottle (410).

4. A dispensing device for water sample and preservative loading according to claim 3, wherein: the infusion assembly further comprises a first guide tube (510), the first guide tube (510) is inserted into a bottle cap of the reagent bottle (410), and one end of the first guide tube (510) entering the reagent bottle (410) extends to be close to the bottom of the reagent bottle (410).

5. A dispensing device for water sample and preservative loading according to claim 3, wherein: the cover of the bottle cap of the reagent bottle (410) is provided with a rubber part (131), the third platform (130) is provided with a first through hole for the rubber part (131) to be embedded, and the third platform (130) is also provided with a second through hole for the liquid separator (300) to pass through.

6. A dispensing device for water sample and preservative loading according to any one of claims 2 to 5, wherein: the second infusion part (530) is provided with a notch for the first infusion part (520) to be inserted, and the notch and the first liquid outlet (532) are both provided with sealing rings, wherein the first infusion part (520) is made of polytetrafluoroethylene, and the second infusion part (530) is made of glass.

7. A dispensing device for water sample and preservative loading according to any one of claims 1 to 5, wherein: there are a plurality of groups of adjusting part (200) on first platform (110), adjusting part (200) are including bracing piece (210), bracing piece (210) vertical setting, the one end detachable of bracing piece (210) is connected first platform (110), third platform (130) detachable connection the other end of bracing piece (210).

8. The dispensing device for loading of water samples and preservatives of claim 7 wherein: the adjusting assembly (200) further comprises an elastic piece (230) and a gasket (220), the second platform (120) and the gasket (220) are sleeved on the supporting rod (210), one end of the elastic piece (230) abuts against the first platform (110), and the other end of the elastic piece (230) presses the gasket (220) towards the second platform (120), wherein the elastic piece (230) is a spring.

9. The dispensing device for loading of water samples and preservatives of claim 7 wherein: the adjusting component (200) comprises two first connecting pieces (240) and two second connecting pieces (250), the supporting rods (210) are inserted into the first platforms (110), the two first connecting pieces (240) are respectively arranged on two sides of the first platforms (110) and are in threaded connection with the supporting rods (210), the supporting rods (210) are inserted into the third platforms (130), and the two second connecting pieces (250) are respectively arranged on two sides of the third platforms (130) and are in threaded connection with the supporting rods (210).

10. A dispensing device for water sample and preservative loading according to any one of claims 1 to 5, wherein: the liquid separator (300) is funnel-shaped, a plurality of second guide pipes (310) are distributed on the bottom array of the liquid separator (300), the number of the second guide pipes (310) is the same as the number of the sample bottles (430), and a third liquid outlet of the second guide pipes (310) extends to the upper portion of the bottle mouth of the sample bottle (430).