CN220932452U - Sampler and sampling device - Google Patents

Abstract

The application provides a sampler and a sampling device. The sampler comprises a cup body assembly, an end cover and a telescopic mechanism, wherein the cup body assembly comprises a sampling cup, a cup opening is formed in the sampling cup, the end cover comprises a sampling cover, blades and a rotating shaft, the sampling cover is connected to the cup opening, a connecting hole and the sampling opening are formed in the sampling cover, the blade assembly comprises the rotating shaft and the blades, one end of the rotating shaft is connected to the blades and is rotationally connected to the connecting hole, and a threaded hole is formed in the other end of the rotating shaft; the telescopic mechanism comprises an outer sleeve and an inner sleeve assembly, the outer sleeve is fixed on the upper surface of the sampling cover, one end of the inner sleeve assembly is rotatably connected with the threaded hole and sleeved in the outer sleeve, and the other end of the inner sleeve assembly protrudes out of the outer sleeve. The inner sleeve component stretches to increase the sampling distance of operators, the risk of close-range sampling is avoided, the inner sleeve component drives the blades to rotate to close the sampling port, the samples in the sampling tube are prevented from flowing out, waste is reduced, the operators are prevented from touching the samples, and the safety of the operators is protected.

Description

Sampler and sampling device

Technical Field

The utility model relates to the field of hydrogen peroxide sampling, in particular to a sampler and a sampling device.

Background

In the process of producing and preparing ferric phosphate, the ferrous powder in the leaching working section and phosphoric acid undergo conversion reaction, so that ferrous phosphate and hydrogen are generated. Hydrogen is prepared into hydrogen peroxide after hydrogenation, oxidation, extraction, post-treatment and other processes, and the hydrogen peroxide needs to be sampled and detected on a loading tower tank truck before shipment. Because hydrogen peroxide belongs to inflammable and explosive products, a device with static electricity can not be used in sampling. When an operator samples, the wire on the glass container system stretches into the hydrogen peroxide tank for sampling.

When the operator samples, the glass container is likely to strike the tank and fracture. After sampling, the wire is not enough to support the weight of the glass container after sampling, and the sampling can be rocked, so that the risk of falling exists. After the sampling is completed, the glass container is poured into the sampling bottle, hydrogen peroxide easily flows to the position where the hand holds the sampling bottle along the side wall, and the waste and the safety risk of contacting the hand exist.

Disclosure of utility model

The utility model aims to overcome the defects in the prior art and provide a sampler and a sampling device which can increase the sampling distance and close a sampling port to prevent the sampling port from contacting a sample.

The aim of the utility model is realized by the following technical scheme:

A sampler comprises a cup body component, an end cover and a telescopic mechanism;

the cup body assembly comprises a sampling cup, and a cup opening is formed above the sampling cup;

The end cover comprises a sampling cover, blades and a rotating shaft, the sampling cover is connected to the cup opening, a connecting hole and a sampling port are formed in the sampling cover, one end of the rotating shaft is connected to the blades, a threaded hole is formed in the other end of the rotating shaft, and the rotating shaft is rotatably connected to the connecting hole;

the telescopic mechanism comprises an outer sleeve and an inner sleeve assembly, one end of the outer sleeve is fixed with the upper surface of the sampling cover, which is away from the cup opening, one end of the inner sleeve assembly is rotatably connected with a threaded hole of the rotating shaft, the main body of the inner sleeve assembly and the rotating shaft are movably sleeved in the outer sleeve, and the other end of the inner sleeve assembly protrudes out of the outer sleeve.

In one embodiment, the inner sleeve assembly comprises a threaded rod and a telescopic assembly, one end of the threaded rod is connected with the threaded hole, the other end of the threaded rod is connected with one end of the telescopic assembly, and the telescopic assembly penetrates through the outer sleeve.

In one embodiment, the telescopic component comprises a telescopic rod, a telescopic inner cylinder and a limiting piece, one end of the telescopic inner cylinder is connected to the threaded rod, the telescopic rod movably penetrates through the telescopic inner cylinder, a bar-shaped limiting through hole is formed in the wall of the telescopic inner cylinder, the limiting piece slidably penetrates through the bar-shaped limiting through hole, a movable gap is formed in the limiting piece along the moving direction of the telescopic rod, and the limiting piece is connected to one end, adjacent to the threaded rod, of the telescopic rod.

In one embodiment, the cup assembly further comprises an elastic valve, a liquid outlet hole is further formed in the bottom of the sampling cup, and the elastic valve is installed in the liquid outlet hole.

In one embodiment, the elastic valve comprises a sealing element, an elastic element, a connecting element and a supporting sheet, wherein the sealing element is installed in the sampling cup and is in covering butt joint with the liquid outlet hole, one end of the connecting element is connected with the sealing element, the other end of the connecting element is connected with the supporting sheet, the connecting element penetrates through the liquid outlet hole, the elastic element is sheathed on the connecting element, one end of the elastic element is in butt joint with the bottom of the outer side of the sampling cup, and the other end of the elastic element is in butt joint with the supporting sheet.

In one embodiment, the sampler further comprises a handle connected to an end of the inner sleeve member facing away from the threaded bore.

The sampling device comprises a base and the sampler in any embodiment, wherein the base comprises a supporting frame, a collecting cylinder and a liquid outlet device, a collecting groove is formed in the collecting cylinder, the collecting cylinder is fixed on the supporting frame, the sampler is placed in the collecting groove, a liquid outlet is formed in the bottom of the collecting cylinder, the collecting groove is communicated with the liquid outlet, and the liquid outlet device is fixed on the liquid outlet.

In one embodiment, the sampling device further comprises a locking assembly, the locking assembly comprises locking pieces and locking seats, the number of the locking pieces and the number of the locking seats are two, the two locking pieces are respectively installed on two sides corresponding to the peripheral wall of the collecting cylinder, and the two locking seats are respectively installed on two sides corresponding to the peripheral wall of the sampling cup.

In one embodiment, the base further comprises a central column, the central column is fixed in the collecting tank, the central column is correspondingly arranged above the liquid outlet, the peripheral wall of the central column is adjacent to the bottom of the base, and the liquid through hole is communicated with the liquid outlet.

In one embodiment, the liquid outlet device comprises a liquid outlet valve and a liquid outlet pipe, wherein one end of the liquid outlet valve is connected with the liquid outlet, and the liquid outlet pipe is connected with the other end of the liquid outlet valve.

Compared with the prior art, the utility model has at least the following advantages:

According to the sampler and the sampling device, the cup body assembly stretches into the tank truck after the operator pulls the inner sleeve assembly to stretch, so that the sampling distance of the operator is increased, the operator can conveniently sample, the risk that the operator closely samples and contacts with the sample is reduced, and the safety of the operator is further protected.

After the sampling cup is filled with the sample, an operator pushes the threaded hole of the blade assembly by pushing the inner sleeve assembly, so that the blade closes the sampling port, the sample in the sampling cup is prevented from splashing or flowing out, the material waste is reduced, and the risk of contact production of the operator is avoided.

The sampler cooperates with the base through the liquid outlet valve of the base to collect samples, so that operators are prevented from touching the samples, and waste is reduced. The sampler is connected with the base through the lock catch assembly, so that the sampling device is convenient to carry.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a sampler according to an embodiment;

FIG. 2 is a cross-sectional view of the sampler shown in FIG. 1 taken along line A-A;

FIG. 3 is a schematic view of a part of the sampler shown in FIG. 1;

FIG. 4 is a schematic view of the end cap of the sampler shown in FIG. 1;

FIG. 5 is a schematic diagram of a sampling device according to an embodiment;

fig. 6 is a cross-sectional view of the sampling device shown in fig. 5 taken along line B-B.

Reference numerals: 10 a-a sampler; 100-cup assembly; 110-sampling cup; 101-cup opening; 120-an elastic valve; 102-a liquid outlet hole; 121-a seal; 122-an elastic member; 123-connecting piece; 124-support sheet; 200-end caps; 210-sampling cap; 2101-connecting holes; 2102-sampling port; 220-leaf; 230-rotating shaft; 2301-a threaded bore; 300-telescoping mechanism; 310-an outer sleeve; 320-an inner sleeve assembly; 321-a threaded rod; 322-telescoping assembly; 3221-a telescoping wand; 3222-telescoping inner cylinder; 3223-a stop; 3201-bar-shaped limiting through holes; 400-handle; 10-sampling device; 10 b-a base; 500-supporting frames; 600-collecting cylinder; 601—a collection tank; 602-a liquid outlet; 700-a liquid outlet device; 710-a liquid outlet valve; 720-a liquid outlet pipe; 800-a latch assembly; 810-locking member; 820-latch base; 900-center column; 901-liquid passing holes.

Detailed Description

In order that the utility model may be readily understood, a more complete description of the utility model will be rendered by reference to the appended drawings. The drawings illustrate preferred embodiments of the utility model. This utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

In order to better understand the technical scheme and beneficial effects of the present application, the following describes the present application in further detail with reference to specific embodiments:

As shown in fig. 1 to 4, a sampler 10a of an embodiment includes a cup assembly 100, an end cap 200, and a telescopic mechanism 300, wherein the cup assembly 100 includes a sampling cup 110, and a cup opening 101 is formed above the sampling cup 110.

Further, the end cover 200 includes a sampling cover 210, a blade 220 and a rotating shaft 230, the sampling cover 210 is connected to the cup opening 101, the sampling cover 210 is provided with a connecting hole 2101 and a sampling opening 2102, one end of the rotating shaft 230 is connected to the blade 220, the other end of the rotating shaft 230 is provided with a threaded hole 2301, the rotating shaft 230 is rotatably connected to the connecting hole 2101, and the blade 220 can cover the sampling opening 2102 when rotating, so as to control the opening and closing of the sampling opening 2102; the telescopic mechanism 300 comprises an outer sleeve 310 and an inner sleeve assembly 320, wherein one end of the outer sleeve 310 is fixed with the upper surface of the sampling cover 210, which is away from the cup opening 101, one end of the inner sleeve assembly 320 is rotatably connected with a threaded hole 2301 of the rotating shaft 230, the main body of the inner sleeve assembly 320 and the rotating shaft 230 are movably sleeved in the outer sleeve 310, and the other end of the inner sleeve assembly 320 protrudes out of the outer sleeve 310. When the inner sleeve member 320 is driven by the threaded hole 2301, the blade 220 connected to the rotation shaft 230 rotates.

In this embodiment, during sampling, an operator holds the inner sleeve assembly 320 and the outer sleeve 310, pulls the inner sleeve assembly 320 to extend the inner sleeve assembly 320, so that one end of the inner sleeve assembly 320 pulls the threaded hole 2301, the threaded hole 2301 is stressed to rotate the blade 220 connected with the rotating shaft 230, so that the blade 220 rotates to open the sampling port 2102, and the operator holds the inner sleeve assembly 320 to extend the cup assembly 100 into the tank truck for sampling. When the sample is taken out from the sampling cup 110, the operator holds the outer sleeve 310, pushes the inner sleeve assembly 320 to shorten, one end of the inner sleeve assembly 320 is pushed to the threaded hole 2301, the threaded hole 2301 is stressed to enable the blade 220 connected with the rotating shaft 230 to rotate, so that the blade 220 rotates to close the sampling hole 2102, and the operator holds the inner sleeve assembly 320 again to take out the cup assembly 100.

In the sampler 10a, the operator pulls the inner sleeve component 320 to stretch and then stretches the cup component 100 into the tank truck to take the sample, so that the sampling distance of the operator is increased, the operator can conveniently sample, the risk of the operator caused by close-range sampling contact with the sample is avoided, and the safety of the operator is further protected; after the sample cup 110 is filled with the sample, an operator pushes the threaded hole 2301 of the rotating shaft 230 by pushing the inner sleeve assembly 320, so that the blade 220 connected with the rotating shaft 230 closes the sampling port 2102, the sample in the sample cup 110 is prevented from splashing or flowing out in the sampling process, the material waste is reduced, and the risk of the operator contacting the sample is avoided.

As shown in fig. 2 and 3, in one embodiment, the inner sleeve assembly 320 includes a threaded rod 321 and a telescopic assembly 322, the threaded rod 321 is screwed to the threaded hole 2301, one end of the telescopic assembly 322 is connected to the threaded rod 321, and the telescopic assembly 322 is sleeved on the outer sleeve 310. In this embodiment, the threaded rod 321 is pulled by the telescopic component 322, and the threaded rod 321 pulls the threaded hole 2301, so that the blade 220 connected with the rotating shaft 230 rotates, and the threaded rod 321 and the threaded hole 2301 are further away. The telescopic assembly 322 pushes the threaded rod 321 to push the threaded hole 2301, so that the blade 220 connected with the rotating shaft 230 rotates, and the threaded rod 321 is close to the threaded hole 2301, namely, the threaded rod 321 interacts with the threaded hole 2301 of the rotating shaft 230, so that the blade 220 connected with the rotating shaft 230 rotates.

As shown in fig. 3, in one embodiment, the telescopic assembly 322 includes a telescopic rod 3221, a telescopic inner cylinder 3222 and a limiting member 3223, one end of the telescopic inner cylinder 3222 is connected to the threaded rod 321, the telescopic rod 3221 movably penetrates through the telescopic inner cylinder 3222, a bar-shaped limiting through hole 3201 is formed in the wall of the telescopic inner cylinder 3222, the limiting member 3223 slidably penetrates through the bar-shaped limiting through hole 3201, and the limiting member 3223 is connected to one end, adjacent to the threaded rod 321, of the telescopic rod 3221. In this embodiment, the limiting piece 3223 connected to the telescopic rod 3221 moves in the bar-shaped limiting through hole 3201, and the limiting piece 3221 is connected to the telescopic rod 3221 to slide in the telescopic inner cylinder 3222, so that the movable range of the telescopic rod 3221 in the telescopic inner cylinder 3222 is limited, and the telescopic assembly 322 stretches out and draws back in a certain range.

As shown in fig. 2, in one embodiment, the cup assembly 100 further includes an elastic valve 120, the bottom of the sampling cup 110 is further provided with a liquid outlet 102, and the elastic valve 120 is installed in the liquid outlet 102. In this embodiment, the elastomeric valve 120 may be used to control the sample ejection within the sampling cup 110 so that an operator may collect a sample at the exit orifice 102.

As shown in fig. 2, in one embodiment, the elastic valve 120 includes a sealing member 121, an elastic member 122, a connecting member 123 and a supporting plate 124, the sealing member 121 is mounted on the sampling cup 110 and is in contact with the liquid outlet 102 in a covering manner, one end of the connecting member 123 is connected to the sealing member 121, the other end of the connecting member 123 is connected to the supporting plate 124, the connecting member 123 is arranged in the liquid outlet 102 in a penetrating manner, the elastic member 122 is sleeved on the connecting member 123, one end of the elastic member 122 is in contact with the bottom of the outer side of the sampling cup (110), and the other end of the elastic member 122 is in contact with the supporting plate 124. In this embodiment, when the operator places the sampler 10a on the adapted column, the column can jack up the supporting plate 124, so that the supporting plate 124 is under pressure, the connecting piece 123 connected with the supporting plate 124 jacks up the sealing piece 121, and the liquid outlet hole 102 is opened; when the operator lifts the sampler 10a, the supporting plate 124 is separated from the column, and the pressure applied by the column to the supporting plate 124 disappears, and the elastic member 122 abuts against the supporting plate 124, so that the supporting plate 124 is subjected to the thrust of the elastic member 122, and the supporting plate 124 pulls the connecting member 123, the connecting member 123 drives the sealing member 121, and the sealing member 121 resets to close the liquid outlet 102.

As shown in FIG. 1, in one embodiment, the sampler 10a further includes a handle 400, the handle 400 being attached to an end of the inner housing assembly 320 facing away from the threaded bore 2301. In this embodiment, the handle 400 has a torus structure, and the operator can increase the holding force of the sampler 10a by holding the handle 400, thereby reducing the problem of falling off during sampling.

As shown in fig. 5 and 6, the present application further includes a sampling device 10, including a base 10b and a sampler 10a in any of the above embodiments, where the base 10b includes a support frame 500, a collecting cylinder 600 and a liquid outlet device 700, the collecting cylinder 600 is provided with a collecting tank 601, the collecting cylinder 600 is fixed on the support frame 500, the sampler 10a is placed in the collecting tank 601, a liquid outlet 602 is provided at the bottom of the collecting cylinder 600, the collecting tank 601 is communicated with the liquid outlet 602, and the liquid outlet device 700 is fixed on the liquid outlet 602. In this embodiment, the collecting cylinder 600 is placed on the supporting frame 500, so that the base 10b can be placed on a plane, the collecting cylinder 600 can be placed on the sampler 10a to collect the sample, and the sample is discharged through the liquid outlet device 700, so that the operator does not contact the sample and the sampler 10a to collect the sample.

As shown in fig. 5, in one embodiment, the sampling device 10 further includes a latch assembly 800, the latch assembly 800 includes two latches 810 and two latch seats 820, the two latches 810 are respectively mounted on two symmetrical sides of the outer peripheral wall of the collecting tube 600, and the two latch seats 820 are respectively correspondingly mounted on two symmetrical sides of the outer peripheral wall of the sampling cup 110. The locking member 810 is mounted to the outer circumferential wall of the cartridge 600, and the locking seat 820 is mounted to the outer circumferential wall of the sampling cup 110. In this embodiment, the lock assembly 800 enables the sampler 10a and the base 10b to be fastened together, so that an operator can conveniently carry the sampling device 10.

As shown in fig. 6, in one embodiment, the base 10b further includes a central column 900, the central column 900 is fixed in the collecting tank 601, the central column 900 is correspondingly installed above the drain 602, a liquid through hole 901 is formed at the bottom of the central column 900 adjacent to the base 10b, and the liquid through hole 901 is communicated with the drain 602. In this embodiment, the central post 900 may abut the elastic valve 120, such that the elastic valve 120 of the sampling cup 110 is opened, and thus the sample flows into the collection cartridge 600.

In one embodiment, as shown in fig. 6, the liquid outlet device 700 includes a liquid outlet valve 710 and a liquid outlet pipe 720, wherein one end of the liquid outlet valve 710 is connected to the liquid outlet 602, and the liquid outlet pipe 720 is fixed to the other end of the liquid outlet valve 710. In this embodiment, the operator can control the liquid outlet 602 to discharge the sample, so that the operator does not need to pour the sampler 10a when collecting the sample, thereby reducing the risk of the operator contacting the sample when pouring, and the liquid outlet pipe 720 is smaller, so that the liquid outlet pipe 720 can be adapted to flow into the container of the sample with smaller caliber.

Compared with the prior art, the utility model has at least the following advantages:

The sampler 10a and the sampling device 10 enable an operator to stretch the cup body assembly 100 into the tank truck for sampling after pulling the inner sleeve assembly 320 to stretch, so that the sampling distance of the operator is increased, the operator can sample conveniently, the risk of the operator caused by close-range sampling contact with the sample is avoided, and the safety of the operator is further protected.

After the sample is taken by the sampling cup 110, an operator pushes the threaded hole 2301 of the rotating shaft 230 by pushing the inner sleeve component 320, so that the blade 220 connected with the rotating shaft 230 closes the sampling port 2102, the sample in the sampling cup 110 is prevented from splashing or flowing out in the sampling process, the material waste is reduced, and the risk of the operator contacting the sample is avoided.

The sampler 10a and the base 10b are matched to collect samples through the liquid outlet valve 710 of the base 10b, so that operators are prevented from touching the samples, and waste is reduced. The sampler 10a and the base 10b are connected together through the lock catch assembly 800, so that the sampling device is convenient to carry.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims (10)

1. A sampler, characterized by comprising a cup assembly (100), an end cover (200) and a telescopic mechanism (300);

the cup body assembly (100) comprises a sampling cup (110), and a cup opening (101) is formed above the sampling cup (110);

The end cover (200) comprises a sampling cover (210), a blade (220) and a rotating shaft (230), wherein the sampling cover (210) is connected to the cup opening (101), a connecting hole (2101) and a sampling opening (2102) are formed in the sampling cover (210), one end of the rotating shaft (230) is connected to the blade (220), a threaded hole (2301) is formed in the other end of the rotating shaft (230), and the rotating shaft (230) is rotatably connected to the connecting hole (2101);

The telescopic mechanism (300) comprises an outer sleeve (310) and an inner sleeve component (320), one end of the outer sleeve (310) is fixed with the upper surface of the sampling cover (210) away from the cup opening (101), one end of the inner sleeve component (320) is rotatably connected to a threaded hole (2301) of the rotating shaft (230), the main body of the inner sleeve component (320) and the rotating shaft (230) are movably sleeved in the outer sleeve (310), and the other end of the inner sleeve component (320) protrudes out of the outer sleeve (310).

2. The sampler of claim 1, wherein the inner sleeve assembly (320) comprises a threaded rod (321) and a telescopic assembly (322), one end of the threaded rod (321) is connected to the threaded hole (2301), the other end of the threaded rod (321) is connected to one end of the telescopic assembly (322), and the telescopic assembly (322) is arranged in the outer sleeve (310) in a penetrating manner.

3. The sampler of claim 2, wherein the telescopic assembly (322) comprises a telescopic rod (3221), a telescopic inner cylinder (3222) and a limiting piece (3223), one end of the telescopic inner cylinder (3222) is connected to the threaded rod (321), the telescopic rod (3221) movably penetrates through the telescopic inner cylinder (3222), a strip-shaped limiting through hole (3201) is formed in the cylinder wall of the telescopic inner cylinder (3222), the limiting piece (3223) slidably penetrates through the strip-shaped limiting through hole (3201), and the limiting piece (3223) is connected to one end, adjacent to the threaded rod (321), of the telescopic rod (3221).

4. The sampler of claim 1, wherein the cup assembly (100) further comprises an elastic valve (120), the bottom of the sampling cup (110) further comprises a liquid outlet hole (102), and the elastic valve (120) is mounted on the liquid outlet hole (102).

5. The sampler of claim 4, wherein the elastic valve (120) comprises a sealing member (121), an elastic member (122), a connecting member (123) and a supporting sheet (124), the sealing member (121) is installed in the sampling cup (110) and covers and abuts against the liquid outlet hole (102), one end of the connecting member (123) is connected with the sealing member (121), the other end of the connecting member (123) is connected with the supporting sheet (124), the connecting member (123) is arranged in the liquid outlet hole (102) in a penetrating manner, the elastic member (122) is sleeved on the connecting member (123), one end of the elastic member (122) abuts against the bottom of the outer side of the sampling cup (110), and the other end of the elastic member (122) abuts against the supporting sheet (124).

6. The sampler of claim 1, further comprising a handle (400), the handle (400) being connected to an end of the inner sleeve assembly (320) facing away from the threaded bore (2301).

7. Sampling device, characterized in that, including base (10 b) and sampler (10 a) in any one of preceding claims 1 to 6, base (10 b) include support frame (500), and collection tube (600) and play liquid device (700), collection tube (600) have been seted up collecting vat (601), collection tube (600) are fixed in support frame (500), sampler (10 a) place in collecting vat (601), drain (602) have been seted up to the bottom of collection tube (600), collecting vat (601) communicate in drain (602), play liquid device (700) are fixed in drain (602).

8. The sampling device of claim 7, further comprising a latch assembly (800), wherein the latch assembly (800) comprises two latches (810) and two latch bases (820), the two latches (810) are respectively mounted on two sides corresponding to the outer peripheral wall of the collecting cylinder (600), and the two latch bases (820) are respectively mounted on two sides corresponding to the outer peripheral wall of the sampling cup (110).

9. The sampling device according to claim 7, wherein the base (10 b) further comprises a central column (900), the central column (900) is fixed in the collecting tank (601), the central column (900) is correspondingly arranged above the liquid discharge port (602), a liquid through hole (901) is formed in the peripheral wall of the central column (900) adjacent to the bottom of the base (10 b), and the liquid through hole (901) is communicated with the liquid discharge port (602).

10. The sampling device according to claim 7, wherein the liquid outlet means (700) comprises a liquid outlet valve (710) and a liquid outlet pipe (720), one end of the liquid outlet valve (710) is connected to the liquid outlet (602), and the liquid outlet pipe (720) is connected to the other end of the liquid outlet valve (710).