CN219121793U - Sampling device - Google Patents

Abstract

The utility model relates to a sampling device, which comprises a sampling tube, a lifting piece and a sealing piece, wherein the top and the bottom of the sampling tube are respectively provided with an extraction opening and a sampling opening which are communicated with the inside of the sampling tube; the lifting piece can be arranged on the sampling tube in a vertically movable manner; the sealing piece is arranged at the bottom of the lifting piece, is positioned below the sampling port, is lifted up, moves up along with the lifting piece and seals the sampling port. The utility model solves the technical problem of poor sample sampling effect on solid-liquid mixed sticky matters.

Description

Sampling device

Technical Field

The utility model relates to the field of sample collection, in particular to a sampling device which can be used for sucking a solid-liquid viscous mixture sample.

Background

At present, a microbiological experiment in the food industry often needs to perform subsequent tests by aseptically sucking a part of samples of solid-liquid mixed sticky substances (such as yogurt samples containing fruit grains, etc.), and a conventional aseptic disposable pipette cannot perform the sampling process well, so that uniformity and representativeness of the sucked samples are affected, accuracy of detection results is further affected, and risks of sample pollution are increased.

The shape of most of the sampling tubes selected in the market at present is straight tube-shape, connects large capacity pipettor or suction ball at the top of sampling tube, and bottom mouth of pipe diameter is far less than the diameter of sampling tube main part, when taking a sample to the sample of solid-liquid mixture thick matter, because the sampling port of sampling tube bottom is less, not only causes the sample to block up the sampling port easily, and the homogeneity of sucking the sample is relatively poor moreover, and the sample of sucking is not representative, and the in-process of sucking the sample in addition many times still can increase the probability that the sample was polluted.

Aiming at the problem of poor sample sampling effect on solid-liquid mixed sticky matters in the related technology, no effective solution is provided at present.

Accordingly, the present inventors have devised a sampling device to overcome the shortcomings of the prior art by years of experience and practice in the relevant industry.

Disclosure of Invention

The utility model aims to provide a sampling device which can realize the suction and transfer of solid-liquid mixed sticky matters, effectively improve the uniformity, the representativeness and the accuracy of results of sampling, improve the sampling efficiency and avoid the sample pollution in the sampling process.

The object of the present utility model can be achieved by the following means;

the utility model provides a sampling device, comprising:

the top and the bottom of the sampling tube are respectively provided with an extraction opening and a sampling opening which are communicated with the inside of the sampling tube;

the lifting piece can be arranged on the sampling tube in a vertically movable manner;

the sealing piece is arranged at the bottom of the lifting piece, is positioned below the sampling port, lifts the lifting piece, moves upwards along with the lifting piece and seals the sampling port.

In a preferred embodiment of the present utility model, the sampling tube includes a tube body vertically disposed, the air extraction port and the sampling port are respectively located at the top and bottom of the tube body, and the diameter of the sampling port is smaller than the diameter of the tube body.

In a preferred embodiment of the present utility model, the sampling tube is disposed on the scale mark.

In a preferred embodiment of the utility model, the suction opening is adapted to be connected to a suction device.

In a preferred embodiment of the present utility model, a filter is disposed in the sampling tube and near the air extraction opening.

In a preferred embodiment of the present utility model, the pulling member includes a connecting rod and a handle, the connecting rod is disposed vertically, and the sealing member and the handle are respectively connected to a bottom end and a top end of the connecting rod.

In a preferred embodiment of the present utility model, an arc surface is formed on the outer wall of the connecting rod, which is close to one side of the sampling tube, and the radian of the arc surface is matched with the radian of the outer wall of the sampling tube in the circumferential direction, so that the arc surface can be attached to the outer wall of the sampling tube.

In a preferred embodiment of the present utility model, a guide member is provided on an outer wall of the sampling tube, and the connecting rod is connected to the guide member so as to be movable up and down.

In a preferred embodiment of the present utility model, the guide member is formed with a sliding hole extending vertically, and the connecting rod is provided with a slider, and the slider is slidably embedded in the sliding hole.

In a preferred embodiment of the present utility model, the number of the guide members is two, the two guide members are symmetrically disposed at two sides of the connecting rod, two sliding blocks are symmetrically disposed on the outer wall of the connecting rod, and the two sliding blocks are respectively embedded in the corresponding sliding holes.

In a preferred embodiment of the present utility model, the lifting member is lifted to slide the slider to the top of the sliding hole, and the sealing member is moved up to a position for sealing the sampling port.

In a preferred embodiment of the present utility model, the sealing member has a plate-like structure disposed along a horizontal direction, the area of the sealing member is larger than the area of the sampling port, and a first baffle ring is disposed on the top of the sealing member and along an annular outer edge of the sealing member.

In a preferred embodiment of the present utility model, the sealing member is provided with a plurality of liquid through holes, and the liquid sample can sequentially pass through the liquid through holes and the sampling port and enter the sampling tube when the sealing member is in a state of plugging the sampling port.

In a preferred embodiment of the present utility model, a second baffle ring is disposed at the bottom of the sealing member and along the annular outer edge of the sealing member.

From the above, the sampling device of the utility model has the characteristics and advantages that: the top and the bottom of the sampling tube are respectively provided with an extraction opening and a sampling opening which are communicated with the inside of the sampling tube, and the extraction opening can be used for extracting air in the sampling process and forming negative pressure in the inside of the sampling tube, so that solid-liquid mixed sticky matters can be sucked into the sampling tube through the sampling opening; because the lifting piece can be arranged on the sampling tube in a vertical moving way, and the sealing piece is arranged at the bottom of the lifting piece, the lifting piece can be lifted up by the way, so that the sealing piece moves upwards along with the lifting piece and plugs the sampling port, the suction and the transfer of solid-liquid mixed sticky matters can be realized, the uniformity, the representativeness and the accuracy of the result of sampling are effectively improved, the sampling efficiency is improved, and the sample pollution in the sampling process is avoided.

Drawings

The following drawings are only for purposes of illustration and explanation of the present utility model and are not intended to limit the scope of the utility model. Wherein:

fig. 1: is one of the front views of the sampling device of the present utility model.

Fig. 2: is one of the right side views of the sampling device of the present utility model.

Fig. 3: two are front views of the sampling device of the present utility model.

Fig. 4: two are right side views of the sampling device of the present utility model.

Fig. 5: a top view of the closure member in the sampling device of the present utility model is shown.

Fig. 6: is a bottom view of the closure in the sampling device of the present utility model.

Fig. 7: is one of the partial enlarged views of the position of the guide in the sampling device of the present utility model.

Fig. 8: is a second partial enlarged view of the position of the guide in the sampling device of the present utility model.

The reference numerals in the utility model are:

1. a sampling tube; 101. An extraction opening;

102. a sampling port; 103. Scale marks;

2. a lifting member; 201. A connecting rod;

202. a handle; 203. A slide block;

3. a guide member; 301. A slide hole;

4. a sealing member; 401. A first baffle ring;

402. a liquid passing hole; 403. A second baffle ring;

5. a filter element.

Detailed Description

For a clearer understanding of technical features, objects, and effects of the present utility model, a specific embodiment of the present utility model will be described with reference to the accompanying drawings.

Words such as up, down, top, bottom, etc. having indication directionality in the present utility model are all based on the up, down, top, bottom, etc. directions in fig. 1, and are described herein.

As shown in fig. 1 to 4, the present utility model provides a sampling device, which comprises a sampling tube 1, a pulling member 2 and a sealing member 4, wherein the top of the sampling tube 1 is provided with an extraction opening 101 communicated with the inside of the sampling tube 1, and the bottom of the sampling tube 1 is provided with a sampling opening 102 communicated with the inside of the sampling tube 1; the lifting piece 2 is arranged on the sampling tube 1 in a vertically movable manner; the sealing piece 4 is arranged at the bottom of the lifting piece 2, and the sealing piece 4 is positioned below the sampling port 102, and the sealing piece 4 can move upwards along with the lifting piece 2 and plug the sampling port 102 by lifting the lifting piece 2.

In the utility model, the top and the bottom of the sampling tube 1 are respectively provided with an extraction opening 101 and a sampling opening 102 which are communicated with the inside of the sampling tube 1, and in the sampling process, the extraction opening 101 can be used for extracting air and forming negative pressure in the inside of the sampling tube 1, so that solid-liquid mixed sticky matters can be sucked into the sampling tube 1 through the sampling opening 102; because carry and draw piece 2 can reciprocate to set up on sampling tube 1 to be provided with sealing member 4 in the bottom of carrying and drawing piece 2, the accessible is carried and is drawn piece 2, makes sealing member 4 move to the position of carrying out the shutoff to sampling port 102 along with carrying and drawing piece 2, carries out the shutoff to sampling port 102 through sealing member 4, so that realize the absorption and the transfer to solid-liquid mixture thick matter, effectively improve homogeneity, representativeness and the accuracy of result of taking a sample, improve sampling efficiency, avoid the sample of sampling process to be polluted.

In an alternative embodiment of the present utility model, as shown in fig. 1 to 4, the sampling tube 1 comprises a vertically arranged tube body, the air extraction opening 101 is positioned at the top of the tube body, the sampling opening 102 is positioned at the bottom of the tube body, and the diameter of the sampling opening 102 is smaller than the diameter of the tube body. In actual sampling, the diameter of the sampling port 102 can be set according to the particle size of the solid sample in the solid-liquid mixed viscous material (the diameter of the sampling port 102 is ensured to be larger than the particle size of the solid sample), so as to ensure that the sample can smoothly enter the sampling tube 1. In addition, the pipe bodies with different diameters can be pre-adapted according to actual sampling requirements (such as the sampling amount of a sample).

Further, as shown in fig. 1 and 3, the sampling tube 1 is provided with graduation marks 103, and the volume of the sample entering the sampling tube 1 during the sampling process can be measured.

In an alternative embodiment of the present utility model, the aspiration port 101 is adapted to be connected to a aspiration device (not shown) by which a sample is aspirated into the sampling tube 1. Wherein the aspiration device may be, but is not limited to, a bulk pipette or an ear ball. The sampling tube 1 can be a hollow tube made of plastic or other materials, and the extraction opening 101 of the sampling tube 1 is the same as the existing sterile pipette, so that the extraction opening 101 can be matched with a large-capacity pipettor or an ear suction ball.

In an alternative embodiment of the present utility model, as shown in fig. 1 to 4, a filter 5 is disposed in the sampling tube 1 and near the extraction opening 101, so as to ensure that the sample can remain in the sampling tube 1, and prevent the sample in the sampling tube 1 from being discharged from the extraction opening 101. In addition, the arrangement of the filter element 5 can also prevent impurities and bacteria in the external environment from entering the sampling tube 1, and prevent the sample from being polluted. The filter 5 may be, but is not limited to, a cotton ball inserted into the sampling tube 1 and located near the suction port 101.

In an alternative embodiment of the present utility model, as shown in fig. 1 and 4, the pulling member 2 includes a connecting rod 201 and a handle 202, the connecting rod 201 is disposed vertically, the sealing member 4 is connected to the bottom end of the connecting rod 201, and the handle 202 is connected to the top end of the connecting rod 201 (the handle 202 is connected to the connecting rod 201 to form an inverted "L" shape). During operation, an experimenter can lift or push down the lifting member 2 through the handle 202, so that the lifting member 2 integrally moves upwards or downwards to change the state of the seal or the opening of the sampling port 102, thereby meeting the sampling requirement of the sample.

Further, the outer wall of the connecting rod 201, which is close to one side of the sampling tube 1, is formed with an arc surface (not shown), and the radian of the arc surface is matched with the radian of the outer wall of the sampling tube 1 in the circumferential direction, so that the arc surface can be attached to the outer wall of the sampling tube 1, and the assembly stability of the sampling tube 1 and the lifting piece 2 is improved.

In an alternative embodiment of the present utility model, as shown in fig. 1 to 4, 7 and 8, a guide member 3 is provided on the outer wall of the sampling tube 1, and a connecting rod 201 is connected to the guide member 3 to move up and down, and the movement of the pulling member 2 is guided by the guide member 3, so that the pulling member 2 moves along the guide member 3 to change the state of the seal or the opening of the sampling port 102. During operation, the slider 203 can be slid to the top of the sliding hole 301 by lifting the lifting member 2, at this time, the slider 203 abuts against the inner wall of the top of the sliding hole 301, and the sealing member 4 just moves up to a position for sealing the sampling port 102.

Further, as shown in fig. 7 and 8, the guide 3 is formed with a vertically extending elongated slide hole 301, and the outer wall of the connecting rod 201 is provided with a slider 203 matching with the slide hole 301, and the slider 203 is slidably inserted into the slide hole 301.

Specifically, as shown in fig. 8, the number of the guide members 3 is two, the two guide members 3 are symmetrically arranged at two sides of the connecting rod 201, two sliding blocks 203 are symmetrically arranged on the outer wall of the connecting rod 201, and the two sliding blocks 203 are respectively embedded in the sliding holes 301 on the corresponding guide members 3.

Further, the sampling tube 1 and the guide 3 may be, but are not limited to, integrally formed.

In one embodiment of the present utility model, as shown in fig. 1, 2 and 5, the sealing member 4 has a circular plate structure disposed along a horizontal direction, the area of the sealing member 4 is larger than the area of the sampling port 102, and a first baffle ring 401 is disposed on top of the sealing member 4 and along an annular outer edge of the sealing member 4. In the operation process, the sealing piece 4 can be used for sealing the sampling port 102 by lifting the lifting piece 2, so that the purpose that the sample leakage can not occur when the sample is transferred is achieved. Wherein the first baffle 401 is provided to prevent the sample from overflowing when sealing.

In another embodiment of the present utility model, as shown in fig. 3, 4 and 6, the sealing member 4 has a circular plate structure arranged along a horizontal direction, the area of the sealing member 4 is larger than the area of the sampling port 102, a plurality of liquid through holes 402 are formed in the sealing member 4, and in a state that the sealing member 4 plugs the sampling port 102, a liquid sample can sequentially pass through each liquid through hole 402 and the sampling port 102 to enter the sampling tube 1. The structure of seting up the via hole 402 on sealing member 4 is mainly used to gather the liquid part in the solid-liquid mixture thick matter, when taking a sample, through lifting up pulling member 2, can make sealing member 4 carry out the shutoff to sampling port 102, at this moment, sampling port 102 accessible each via hole 402 communicates with sealing member 4's below, make in the sampling tube 1 form the negative pressure through suction device suction, the liquid in the solid-liquid mixture thick matter can get into sampling tube 1 through each via hole 402 and sampling port 102 in proper order, accomplish the sample of the liquid part in the solid-liquid mixture thick matter, and the solid particle part in the solid-liquid mixture thick matter is blocked by sealing member 4 and can't get into in the sampling tube 1. In the actual sampling process, the pore diameter of the liquid passing hole 402 needs to be smaller than the particle diameter of the solid particle portion in the solid-liquid mixed viscous material, so as to ensure that the solid particle portion in the solid-liquid mixed viscous material does not enter the sampling tube 1.

Further, as shown in fig. 3, 4 and 6, a second baffle ring 403 is disposed at the bottom of the sealing member 4 and along the annular outer edge of the sealing member 4, and the second baffle ring 403 is used for preventing the solid particles in the solid-liquid mixed viscous material from bypassing the sealing member 4 and entering the sampling tube 1.

The sampling device can be used for aseptic sampling of solid-liquid mixed sticky matters, sampling pipes 1 with different sampling port 102 diameters can be selected according to the particle size of solid particles in a sample, sealing pieces 4 without liquid passing holes 402 or sealing pieces 4 without liquid passing holes 402 are selected according to different testing purposes, and the sampling port 102 can be plugged after the solid-liquid mixed sticky matters enter the sampling pipe 1 through the sealing pieces 4 without the liquid passing holes 402; the sealing piece 4 with the liquid through hole 402 is used for sealing the sampling port 102 before sampling, and then sampling the liquid part in the solid-liquid mixed viscous material, so that the problem that the solid-liquid mixed viscous material or the liquid part in the solid-liquid mixed viscous material is difficult to suck and sample is solved.

The utility model increases the uniformity and representativeness of the sample by selecting sampling tubes 1 with different diameters in advance and sucking the solid-liquid mixed sticky substance by using the sucking device arranged at the sucking hole 101. When the sealing piece 4 without the liquid through hole 402 is selected, the sealing piece 4 can be used for collecting solid-liquid mixed sticky matters, after the solid-liquid mixed sticky matters are sucked into the sampling tube 1, the sealing piece 4 can be used for sealing the sampling port 102 of the sampling tube by lifting the lifting piece 2, sample transferring work can be carried out after the sampling port 102 is sealed, and meanwhile, due to the arrangement of the sealing piece 4, samples in the sampling tube 1 can be prevented from flowing out in the transferring process; when the sealing piece 4 with the through-liquid hole 402 is selected, the sealing piece 4 can be used for collecting the liquid part in the solid-liquid mixed viscous material, the corresponding sealing piece 4 can be selected in advance according to the particle size of the solid particle part in the solid-liquid mixed viscous material, the diameter of the through-liquid hole 402 on the sealing piece 4 is ensured to be smaller than the particle size of the solid particle part in the solid-liquid mixed viscous material, when sampling is carried out, the sealing piece 4 can be firstly used for blocking the sampling port 102 of the sampling tube through the lifting and pulling piece 2, then the sample is sucked, at the moment, the particle size of the solid particle part in the solid-liquid mixed viscous material is blocked below the sealing piece 4 due to the fact that the particle size of the solid particle part in the solid-liquid mixed viscous material is larger than the diameter of the through-liquid hole 402, and the liquid part in the solid-liquid mixed viscous material can sequentially enter the sampling tube 1 through the through-liquid hole 402 and the sampling port 102, and the sampling is completed.

The sampling device of the utility model has the characteristics and advantages that:

1. the sampling device can select the corresponding sealing piece 4 without the liquid passing hole 402 or the corresponding sealing piece 4 with the liquid passing hole 402 according to different sampling requirements, thereby realizing the suction and transfer of solid-liquid mixed sticky matters or the suction and transfer of liquid parts in the solid-liquid mixed sticky matters, improving the uniformity, representativeness and result accuracy of suction samples, improving the sampling efficiency and avoiding the sample pollution in the sampling process.

2. In this sampling device, through predetermining the diameter of body and the diameter of sampling port 102 in sampling tube 1 to cooperation pulling piece 2 and sealing piece 4, can inhale the solid particle part in the solid-liquid mixture thick thing together with the liquid part body in sampling tube 1, the condition that sampling port 102 is blockked up can not appear, has solved the problem that the solid particle thing often blocks up the sampling port when ordinary pipette absorbs the thick liquid that contains the solid particle thing in the sampling process.

The foregoing is illustrative of the present utility model and is not to be construed as limiting the scope of the utility model. Any equivalent changes and modifications can be made by those skilled in the art without departing from the spirit and principles of this utility model, and are intended to be within the scope of this utility model.

Claims (14)

1. A sampling device, comprising:

the top and the bottom of the sampling tube are respectively provided with an extraction opening and a sampling opening which are communicated with the inside of the sampling tube;

the lifting piece can be arranged on the sampling tube in a vertically movable manner;

the sealing piece is arranged at the bottom of the lifting piece, is positioned below the sampling port, lifts the lifting piece, moves upwards along with the lifting piece and seals the sampling port.

2. The sampling device of claim 1, wherein the sampling tube comprises a vertically disposed tube body, the extraction port and the sampling port are located at the top and bottom of the tube body, respectively, and the diameter of the sampling port is smaller than the diameter of the tube body.

3. The sampling device of claim 1, wherein the sampling tube is provided with graduation marks.

4. A sampling device according to claim 1, wherein the extraction port is adapted to be connected to an extraction means.

5. The sampling device of claim 4, wherein a filter is disposed within the sampling tube adjacent the extraction port.

6. The sampling device of claim 1, wherein the pull member comprises a connecting rod and a handle, the connecting rod being disposed vertically, the closure member and the handle being connected to a bottom end and a top end of the connecting rod, respectively.

7. The sampling device of claim 6, wherein the connecting rod has an arcuate surface formed on the outer wall thereof adjacent to the sampling tube, the arcuate surface being configured to engage the outer wall of the sampling tube in a circumferential arc to enable the arcuate surface to engage the outer wall of the sampling tube.

8. The sampling device of claim 6, wherein a guide is provided on an outer wall of the sampling tube, and the connecting rod is connected to the guide so as to be movable up and down.

9. The sampling device of claim 8, wherein the guide member is formed with a slide hole extending vertically, and the connecting rod is provided with a slider, and the slider is slidably inserted into the slide hole up and down.

10. The sampling device of claim 9, wherein the number of the guide members is two, the two guide members are symmetrically arranged on two sides of the connecting rod, two sliding blocks are symmetrically arranged on the outer wall of the connecting rod, and the two sliding blocks are respectively embedded in the corresponding sliding holes.

11. The sampling device of claim 9, wherein the lifting member is lifted to slide the slider to the top of the slide hole, and the sealing member is moved up to a position to seal the sampling port.

12. The sampling device of any one of claims 1 to 11, wherein the closure member is a plate-like structure disposed in a horizontal direction, the area of the closure member is larger than the area of the sampling port, and a first baffle ring is disposed on top of the closure member and along an annular outer edge of the closure member.

13. The sampling device of claim 12, wherein the sealing member is provided with a plurality of liquid through holes, and liquid samples can sequentially pass through the liquid through holes and the sampling port to enter the sampling tube when the sealing member is in a state of plugging the sampling port.

14. The sampling device of claim 13, wherein a second stop ring is provided at the bottom of the closure member and along the annular periphery of the closure member.

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