CN209820857U

CN209820857U - Sampler

Info

Publication number: CN209820857U
Application number: CN201920618779.1U
Authority: CN
Inventors: 毛爱华
Original assignee: Hubei Zhuang Kang Biological Technology Co Ltd
Current assignee: Hubei Zhuang Kang Biological Technology Co Ltd
Priority date: 2019-04-30
Filing date: 2019-04-30
Publication date: 2019-12-20
Anticipated expiration: 2029-04-30

Abstract

The utility model relates to a sampler, which comprises an outer barrel, wherein an inner barrel is arranged in the outer barrel, the two ends of the inner barrel are respectively connected with a first piston plate and a mounting plate which are both connected with the inner wall of the outer barrel in a sliding way, one end of the outer barrel, which is close to the first piston plate, is connected with a first sampling needle communicated with the outer barrel, one end of the inner barrel, which is connected with the first piston plate, is connected with a second sampling needle communicated with the inner barrel, and the second sampling needle is inserted into the first sampling needle; still be provided with rather than inner wall sliding connection's second piston board in the inner tube, and the second piston board is connected with a connecting rod of wearing out the inner tube, and the connecting rod continues to wear out the urceolus after wearing out the inner tube and is connected with first push-and-pull handle, still is provided with one end in the urceolus and is connected with the mounting panel, and the spliced pole of being connected is worn out urceolus and second push-and-pull handle to the other end, and spliced pole and second push-and-pull handle all are provided with. The utility model discloses an interior urceolus absorbs the liquid sample, realizes the separation of sample for the purity of sample that the sampler was taken can promote.

Description

Sampler

Technical Field

The utility model relates to a biological sample sampling device technical field especially relates to a sampler.

Background

In biotechnological tests, a sample is sucked up with a sampler.

In the prior art, some samples often have impurities, extraction liquid is needed to extract effective components or remove the impurities, the added extraction liquid is often difficult to separate, and the samples sucked by a sampler often contain a small amount of extraction liquid, so that the purity of the samples is low, and the results of subsequent tests and the like are influenced.

In view of the above, it is desirable to provide a sampler capable of ensuring sample purity.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming prior art's not enough, provide a sampler, adopt the setting of interior urceolus, absorb the sample that contains the extract with the urceolus earlier, treat the extract and absorb extract or clear solution with the inner tube after the layering in the urceolus, reach the purpose of separation between them, solved the not high problem of sample appearance sample purity among the prior art.

The utility model discloses a realize through following technical scheme:

a sampler comprises an outer barrel, wherein an inner barrel is arranged in the outer barrel, two ends of the inner barrel are respectively connected with a first piston plate and a mounting plate which are in sliding connection with the inner wall of the outer barrel, one end of the outer barrel, which is close to the first piston plate, is connected with a first sampling needle communicated with the outer barrel, one end of the inner barrel, which is connected with the first piston plate, is connected with a second sampling needle communicated with the inner barrel, and the second sampling needle is inserted into the first sampling needle; still be provided with rather than inner wall sliding connection's second piston board in the inner tube, and the second piston board is connected with a connecting rod of wearing out the inner tube, and the connecting rod continues to wear out the urceolus after wearing out the inner tube and is connected with first push-and-pull handle, still is provided with one end in the urceolus and is connected with the mounting panel, and the spliced pole of being connected is worn out urceolus and second push-and-pull handle to the other end, and spliced pole and second push-and-pull handle all are provided with.

In the technical scheme, when the sampling device is used, the first sampling needle is vertically inserted below the liquid level of a sample, the second push-pull handle is pulled, the first piston plate slides on the inner wall of the outer barrel far away from the first sampling needle, the sample is sucked into the outer barrel, the sucked sample can be layered after standing, the first push-pull handle is continuously pulled to suck upper layer liquid or lower layer liquid into the inner barrel (after layering, the possible inlet of the second sampling needle can be in the upper layer liquid or in the lower layer liquid, if the sample is just in the boundary position, the second push-pull handle is pushed firstly to discharge the lower layer liquid to the vicinity of the boundary, then a small amount of upper layer liquid and a small amount of lower layer liquid near the boundary are continuously discharged and discarded, namely, the separation of the upper layer liquid and the lower layer liquid is realized), the separation of the upper layer liquid and the lower layer liquid is realized, and.

Compared with the prior art, the utility model discloses there is following useful part:

the inner cylinder and the outer cylinder are adopted to absorb the liquid sample, the outer cylinder is used for absorbing the sample for the first time, after the sample in the outer cylinder is layered again, the inner cylinder is used for absorbing the sample again, and the separation of the sample is realized, so that the purity of the sample sampled by the sampler is improved.

Drawings

Fig. 1 is a schematic diagram of an internal structure of an embodiment of the present invention.

Fig. 2 is an enlarged schematic view of a point a in fig. 1 according to an embodiment of the present invention.

Fig. 3 is a schematic view of a second sampling needle according to an embodiment of the present invention in a state of supernatant.

Fig. 4 is a schematic diagram of a state of the inner barrel sucking supernatant liquid in the state of fig. 3 according to an embodiment of the present invention.

Fig. 5 is a schematic view of a second sampling needle according to an embodiment of the present invention in a state of being in a subnatant.

Fig. 6 is a schematic diagram of a state of the inner tube sucking the lower layer liquid in the state of fig. 5 according to the embodiment of the present invention.

In the figure: the sampling device comprises an outer barrel 1, an inner barrel 2, a first piston plate 3, a mounting plate 4, a first sampling needle 5, a second sampling needle 6, a second piston plate 7, a connecting rod 8, a first push-pull handle 9, a connecting column 10, a second push-pull handle 11, a spring 12, a connecting part 13, upper liquid 14 and lower liquid 15.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1 to 6, a sampler comprises an outer barrel 1, an inner barrel 2 is arranged in the outer barrel 1, two ends of the inner barrel 2 are respectively connected with a first piston plate 3 and a mounting plate 4 which are slidably connected with the inner wall of the outer barrel 1, the first piston plate 3 is made of rubber, the inner wall of the outer barrel 1 is provided with a chute (not shown) for the first piston plate 3 and the mounting plate 4 to slide, so as to ensure that the first piston plate 3 and the mounting plate 4 slide smoothly in the outer barrel 1, one end of the outer barrel 1 close to the first piston plate 3 is connected with a first sampling needle 5 communicated with the outer barrel 1, the first sampling needle 5 is used for directly inserting a sample in the sample to be sampled, one end of the inner barrel 2 connected with the first piston plate 3 is connected with a second sampling needle 6 communicated with the inner barrel 2, the second sampling needle 6 is inserted into the first sampling needle 5 and is performed with the first sampling needle 5, the second sampling needle 6 moves into the outer barrel 1, and is always immersed in the liquid; a second piston plate 7 connected with the inner wall of the inner barrel 2 in a sliding manner is further arranged in the inner barrel 2, the second piston plate 7 is used for sucking a sample by the inner barrel 2, the second piston plate 7 is made of rubber, a sliding groove (not shown) for the second piston plate 7 to slide is formed in the inner wall of the inner barrel 2, the second piston plate 7 is connected with a connecting rod 8 penetrating out of the inner barrel 2, the connecting rod 8 penetrates out of the inner barrel 2 and then continuously penetrates out of the outer barrel 1 to be connected with a first push-pull handle 9, one end of the connecting rod 10 is connected with the mounting plate 4, the other end of the connecting rod 10 penetrates out of the outer barrel 1, the connecting rod 10 penetrates out to be connected with a second push-pull handle 11, and the connecting rod 10 and the second push-; the second push-pull handle 11 is connected with the connecting column 10 and then connected with the inner cylinder 2, so that the second push-pull handle 11 drives the first piston plate 3, and the first sampling needle 5 absorbs a sample.

Preferably, a spring 12 surrounding the connecting column 10 is further arranged in the outer barrel 1, one end of the spring 12 is connected with the mounting plate 4, and the other end of the spring 12 is connected with the inner wall of the end face of the outer barrel 1, so that when the second sampling needle 6 sucks a sample, the spring 12 slowly recovers deformation along with the reduction of the sample amount in the outer barrel 1, and pushes the inner barrel 2 to approach the first sampling needle 5, so as to maintain the constant sum of the liquid volumes in the inner barrel 2 and the outer barrel 1.

Preferably, be sliding connection between first sampling needle 5 and the second sampling needle 6, there is the clearance that can guarantee the sliding relation between the two, and when first sampling needle 5 absorbed the sample, second sampling needle 6 withdrawed from first sampling needle 5 thereupon, and then gets into in the urceolus 1, realizes absorbing once more the sample in the urceolus 1, and can not hinder the sample to carry out in the urceolus 1.

Preferably, the outer tube 1 is provided with a connection part 13 to which the first sampling needle 5 is screwed in order to mix with the sample remaining in the first sampling needle 5 when the sample in the inner tube 2 is pushed out, and the first sampling needle 5 is removed when the second sampling needle 6 pushes out the sample, thereby preventing the sample from being contaminated again.

Preferably, in order to facilitate the operation of the sampling needle, the length of the first push-pull handle 9 is greater than that of the second push-pull handle 11, and the lengths are both greater than the length of the outer diameter of the outer barrel 1.

In use of the above-described embodiment,

firstly, vertically inserting a first sampling needle 5 below the liquid level of a sample, then pulling a second push-pull handle 11, enabling a first piston plate 3 to slide on the inner wall of an outer barrel 1 away from the first sampling needle 5, sucking the sample into the outer barrel 1, after the sucked sample is static and layered, continuously pulling the first push-pull handle 9 to suck supernatant liquid 14 or subnatant 15 into an inner barrel 2 (after layering, a possible inlet of a second sampling needle 6 can be in the supernatant liquid 14 (see figure 3) or in the subnatant 15 (see figure 5), if the subnatant is just at a boundary, firstly pushing the second pull handle 11 to discharge the subnatant 15 to the vicinity of the boundary, then continuously discharging a small amount of the supernatant liquid 14 and a small amount of the subnatant 15 near the boundary and discarding, namely separating the supernatant liquid and the subnatant liquid), and simultaneously enabling the first piston plate 3 to be close to the first sampling needle 5 under the pushing of a spring 12, and separating the supernatant liquid and the subnatant liquid (namely, the supernatant liquid 14 and the subnatant liquid 15 are respectively located in the inner barrel 2 or the, the second push-pull handle 11 is pushed to push out the residual samples in the outer cylinder 1 (at this time, the second sampling needle 6 is reinserted into the first sampling needle 5), then the first sampling needle 5 is taken down, the first push-pull handle 9 is pushed to push out the samples in the inner cylinder 2, and finally the separation of upper and lower layer liquids is achieved, so that the purpose of purifying the samples is achieved.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A sampler is characterized by comprising an outer barrel, wherein an inner barrel is arranged in the outer barrel, two ends of the inner barrel are respectively connected with a first piston plate and a mounting plate which are in sliding connection with the inner wall of the outer barrel, one end of the outer barrel, which is close to the first piston plate, is connected with a first sampling needle communicated with the outer barrel, one end of the inner barrel, which is connected with the first piston plate, is connected with a second sampling needle communicated with the inner barrel, and the second sampling needle is inserted into the first sampling needle; still be provided with rather than inner wall sliding connection's second piston board in the inner tube, and the second piston board is connected with a connecting rod of wearing out the inner tube, and the connecting rod continues to wear out the urceolus and is connected with first push-and-pull handle after wearing out the inner tube, still is provided with one end in the urceolus and is connected with the mounting panel, and the spliced pole of urceolus is worn out to the other end, and the spliced pole is worn out the back and is connected with second push-and-pull handle, and spliced pole and second push-and.

2. A sampler according to claim 1 wherein the first and second needles are slidably connected.

3. A sampler according to claim 1 wherein the outer barrel is provided with a connection for threaded connection of the first sampling needle.

4. A sampler according to claim 1 wherein the outer barrel is further provided with a spring surrounding the connecting column, one end of the spring being connected to the mounting plate and the other end being connected to the inner wall of the end face of the outer barrel.

5. A sampler according to any one of claims 1 to 4 wherein the first push-pull handle is longer than the second push-pull handle and both are longer than the outer diameter of the outer barrel.