CN214584286U

CN214584286U - Liquid sampler

Info

Publication number: CN214584286U
Application number: CN202120719781.5U
Authority: CN
Inventors: 余小兵; 郝永亮; 段晓军; 梅清科
Original assignee: China Shenhua Coal to Liquid Chemical Co Ltd; Ordos Coal to Liquid Branch of China Shenhua Coal to Liquid Chemical Co Ltd
Current assignee: China Shenhua Coal to Liquid Chemical Co Ltd; Ordos Coal to Liquid Branch of China Shenhua Coal to Liquid Chemical Co Ltd
Priority date: 2021-04-08
Filing date: 2021-04-08
Publication date: 2021-11-02
Anticipated expiration: 2031-04-08

Abstract

The utility model relates to a sample thief field discloses a liquid sample thief. The liquid sampler comprises a pumping barrel (1), a pumping rod (2), a liquid extraction structure and a liquid discharge structure, wherein the pumping barrel (1) is provided with a space for containing sampling liquid, the pumping rod (2) is positioned in the pumping barrel (1), the pumping rod (2) moves upwards and then is closed, the sampling liquid passes through the liquid extraction structure and enters the pumping barrel (1), the pumping rod (2) moves downwards and then is closed, and the sampling liquid is discharged from the liquid discharge structure. The utility model discloses a liquid sampler can be through the reciprocating motion suction and the discharge sampling liquid of pole of taking out, reaches the purpose of drawing a small amount of samples from a large amount of samples. This liquid sampler simple structure has shortened the sampling time, has reduced the requirement to the sample, holds the sample volume easily, has reduced the waste of raw materials.

Description

Liquid sampler

Technical Field

The utility model relates to a sample thief field specifically relates to a liquid sample thief.

Background

The circulating pump is the key equipment of direct liquefaction of coal, and coal-based sealing oil is used for the sealed of circulating pump, and the sampling analysis of coal-based sealing oil is related to the life of circulating pump, therefore, coal-based sealing oil all has important meaning to aspects such as coal liquefaction production, use. At present, a hand-operated oil pump is used in the sampling process, and the sampling tool is suitable for sampling samples with large sampling amount and is not suitable for sampling samples with high temperature, large viscosity, multiple varieties and small sampling amount. Hand oil pump sample thief lets the pump operation produce the suction and inhales the sample article through hand, sample to the temperature is high, hand oil pump sealing washer can warp very fast and lead to the damage of pump, to the big oil appearance of viscosity, the suction often is not enough, and hand pump operation can contact the sample, all need pull down the pump rinse thoroughly after having adopted the appearance at every turn, this work is more loaded down with trivial details and because the inside complicated structure of pump leads to being difficult to the sanitization, the work load of greatly increased sampling, in case can pollute the sample of taking next in the unclean, especially different kinds of sample. In a laboratory, the required sample dosage is usually less, generally about 1000mL, and for sampling a small amount of samples, the sampling amount is not easy to grasp by a hand-operated oil pump, which easily causes the waste of resources of raw materials.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the problem that the structure is complicated, be difficult to hold the sampling volume that prior art exists, providing a liquid sampler, this liquid sampler has simple structure, holds the advantage of sampling volume easily.

In order to achieve the above object, an aspect of the present invention provides a liquid sampler, the liquid sampler includes a pumping barrel and a pumping rod having a piston, the pumping rod is inserted into the pumping barrel from a first end thereof, and is in sliding sealing fit with an inner wall surface of the pumping barrel, a second end of the pumping barrel opposite to the first end is provided with a suction channel for sucking sampling liquid and a suction closing element capable of closing the suction channel when the pumping rod is pushed by the pumping barrel, a portion of the pumping barrel between the first end and the second end is provided with a drainage channel for discharging the sampling liquid in the pumping barrel, and a drainage closing element capable of closing the drainage channel when the pumping rod is pulled by the pumping barrel.

Optionally, an oil inlet pipe is connected to the second end of the pumping cylinder, and the pumping sealing element includes a sealing bead disposed in the pumping cylinder, and the sealing bead can seal and seal an end of the oil inlet pipe facing the pumping cylinder to seal the pumping channel.

Optionally, the draw tube has a tapered bottom, the oil inlet tube is connected to the bottom end of the tapered bottom, and the sealing bead is located in the tapered bottom.

Optionally, the drainage channel communicates with the lumen of the draw tube through the tapered bottom.

Optionally, the oil inlet pipe comprises a plurality of detachably connected pipe sections, and adjacent pipe sections are connected through threads.

Optionally, the material of the sealing beads is glass, and the diameter of the sealing beads is 2.0 cm-2.5 cm.

Optionally, an oil outlet pipe is connected to a side wall of the pumping cylinder, and the drainage sealing element comprises a one-way stop valve installed on the oil outlet pipe, wherein the one-way stop valve is configured to allow only one-way drainage of the sampling liquid in the pumping cylinder through the oil outlet pipe.

Optionally, the flowline comprises detachably connected lengths of pipe, adjacent lengths of pipe being threadedly connected.

Optionally, a sealing ring is arranged on the outer edge of the piston, and the sealing ring is in sealing fit with the inner wall surface of the pumping cylinder.

Optionally, the drawing cylinder is made of glass or plastic, and the drawing rod is made of stainless steel.

The utility model discloses a liquid sampler, when sampling liquid sample in the sample bucket from the large capacity, upwards twitch the pole of taking out, liquid sample can enter into the section of thick bamboo of taking out, promotes down to take out the pole, and liquid sample can follow the flowing back passageway and discharge, with the sampling liquid discharge to the container of small capacity in, the reciprocating motion of taking out the pole can reach the purpose of drawing a small amount of samples from a large amount of samples. This liquid sampler simple structure has shortened the sampling time, has reduced the requirement to the sample, holds the sample volume easily, has reduced the waste of raw materials.

Drawings

FIG. 1 is a schematic structural diagram of a liquid sampler according to the present invention;

FIG. 2 is an enlarged schematic view of the flowline and the one-way shut-off valve of FIG. 1.

Description of the reference numerals

1, pumping a cylinder; 2, drawing a rod; 3-oil inlet pipe; 4-sealing the beads; 5, an oil outlet pipe; 6-one-way stop valve; 21-piston.

Detailed Description

In the present invention, unless otherwise specified, the terms of orientation such as "upper and lower" and "generally refer to the orientation shown in fig. 1," inner and outer "refer to the inner and outer relative to the outline of each member itself.

The utility model provides a liquid sampler, liquid sampler is including taking out a section of thick bamboo 1 and the pole 2 of taking out that has piston 21, take out pole 2 from the first end of taking out a section of thick bamboo 1 insert take out a section of thick bamboo 1 in and through piston 21 and the sealed cooperation of internal face slidable of taking out a section of thick bamboo 1, take out a section of thick bamboo 1 with the second end that first end is relative is equipped with the suction channel who is used for pumping the sampling liquid and can seal when taking out a section of thick bamboo 1 promotion take out pole 2 relatively suction channel's suction closing element, the lieing in of taking out a section of thick bamboo 1 part between first end and the second end is equipped with and is used for discharging and takes out a section of thick bamboo 1 in the flowing back passageway of sampling liquid and can seal when taking out a section of thick bamboo 1 pulling relatively and taking out pole 2 the flowing back closing element of flowing back passageway.

The utility model discloses a liquid sampler, when sampling liquid sample in the sample bucket from the large capacity, upwards twitch the pump rod 2, liquid sample can enter into a pump section of thick bamboo 1 in, promote pump rod 2 downwards, liquid sample can follow the flowing back passageway and discharge, with the sampling liquid discharge to the container of small capacity in, the reciprocating motion of pump rod 2 can reach the purpose of drawing a small amount of samples from a large amount of samples. This liquid sampler simple structure has shortened the sampling time, has reduced the requirement to the sample, holds the sample volume easily, has reduced the waste of raw materials.

The utility model discloses in, as shown in fig. 1, take out a section of thick bamboo 1 the second end is connected with into oil pipe 3, suction closure element including set up in take out sealed pearl 4 in a section of thick bamboo 1, sealed pearl 4 can seal the orientation that advances oil pipe 3 and take out the one end of a section of thick bamboo 1. Because the diameter of the sealing bead 4 is larger than the inner diameter of the oil inlet pipe 3, the sealing bead 4 can seal the second end of the pumping cylinder 1, when the pumping cylinder 1 is pulled upwards, the sealing bead 4 can be pushed open by the air in the oil inlet pipe 3, and the sampling liquid enters the oil inlet pipe 3 from the sample cylinder and then enters the pumping cylinder 1; when the pumping barrel 1 is pushed downwards, the sealing bead 4 seals the second end of the pumping barrel 1, and the sampling liquid is discharged from the liquid discharge channel. The inner diameter of the drawing tube 1 is 6-10 cm, the wall thickness of the drawing tube 1 is 1.5-3 mm, and the height is 25-35 cm.

Further, the draw tube 1 has a tapered bottom portion, to the bottom end of which an oil feed pipe 3 is connected, and a sealing bead 4 is located inside the tapered bottom portion.

Specifically, the drainage channel is communicated with the inner cavity of the pumping barrel 1 through the conical bottom.

In order to facilitate the cleaning of the oil inlet pipe 3, the oil inlet pipe 3 comprises a plurality of detachably connected pipe sections, and the adjacent pipe sections are connected through threads. After the liquid sampler is used, the oil inlet pipe 3 is disassembled into a plurality of sections of the pipe sections, and then tools and cleaning agents are used for cleaning the inner surface and the outer surface of the plurality of sections of the pipe sections to ensure the cleanliness of the oil inlet pipe 3, so that the sampled liquid is prevented from being polluted.

In addition, the oil inlet pipe 3 is arranged into a plurality of detachable pipe sections, the number of the used pipe sections can be determined according to different depths of liquid to be sampled, and the flexibility of the liquid sampler is improved.

Preferably, the length of the pipe section can be 23-35 cm, the inner diameter of the oil inlet pipe 3 can be 1.5-2.0 cm, and the thickness of the pipe wall is 1.0-2.0 mm. And a sealing structure can be arranged between the adjacent pipe sections, so that the sampling liquid is prevented from leaking from the joints of the pipe sections, and the waste of raw materials is reduced. Because the internal diameter of the pumping cylinder 1 is multiple times of that of the oil inlet pipe 3, when the pumping rod 2 is pumped upwards, the sampling liquid can be pumped from the sampling barrel into the oil inlet pipe 3 and then into the pumping cylinder 1 from the oil inlet pipe 3 only by a small distance.

Further, when the sampling liquid is an alkaline solution, the material of the sealing bead 4 may be plastic; when the sampling liquid is other non-corrosive water samples or solution sample liquids, the material of the sealing bead 4 may be glass. Preferably, the sealing bead 4 has a diameter of 2.0cm to 2.5 cm.

The utility model discloses in, as shown in fig. 1, be connected with out oil pipe 5 on the lateral wall of a section of thick bamboo 1, flowing back closure element is including installing one-way stop valve 6 on out oil pipe 5, and one-way stop valve 6 sets up to only allowing in the section of thick bamboo 1 the sampling liquid passes through out the one-way discharge of oil pipe 5. When the pumping cylinder 1 is pulled upwards, the one-way stop valve 6 is closed, and the sampling liquid cannot be discharged from the oil outlet pipe 5; when the pumping cylinder 1 is pushed downwards, the one-way stop valve 6 is opened, and the sampling liquid can be discharged from the oil outlet pipe 5 and is discharged into a designated container.

Further, the flowline 5 comprises a plurality of detachably connected lengths of pipe, adjacent said lengths of pipe being threadedly connected. The oil outlet pipe 5 is arranged into a plurality of sections and can be disassembled, the oil outlet pipe 5 is convenient to clean, after the liquid sampler is used, the oil outlet pipe 5 is disassembled into a plurality of sections, then tools and cleaning agents are used for disassembling the sections on the inner surface and the outer surface of the pipe section, the cleanliness of the oil outlet pipe 5 is ensured, and therefore the sampling liquid is guaranteed against pollution. The oil outlet pipe 5 comprises a plurality of sections of bent pipe sections and a plurality of sections of straight pipe sections, two ends of each section of bent pipe section are in threaded connection with the straight pipe sections, and a sealing structure is arranged between the two sections of bent pipe sections and the straight pipe sections to prevent the sampling liquid from leaking out of the joints, so that the waste of raw materials is reduced.

Wherein, the inner diameter of the oil outlet pipe 5 is preferably 1.0-1.5 cm. Since the inner diameter of the pumping barrel 1 is multiple times of that of the oil outlet pipe 5, when the pumping rod 2 is pushed downwards, the sampling liquid can be discharged into the oil outlet pipe 5 and then into other containers from the oil outlet pipe 5 by pushing a little distance.

Specifically, as shown in fig. 2, the one-way stop valve 6 is located in the straight pipe section and is made of stainless steel. In order to facilitate the manufacture, disassembly and cleaning of parts, the conical bottom is provided with a conical bottom straight pipe 11, and the conical bottom straight pipe 11 is connected with the oil outlet pipe 5 through a detachable sealing structure.

In order to ensure that the liquid sampler can effectively extract the sampling liquid, the outer edge of the piston 21 is provided with a sealing ring which is in sealing fit with the inner wall surface of the extraction cylinder 1. Because the piston 21 is in sealing fit with the inner wall surface of the pumping cylinder 1, the pumping rod 2 is pumped upwards, the pressure in the pumping cylinder 1 is lower than the outside atmospheric pressure, and the sampling liquid is pushed into the pumping cylinder 1 by the atmospheric pressure; the pumping rod 2 is pushed downwards, the pressure in the pumping cylinder 1 is greater than the outside atmospheric pressure, and therefore the sampling liquid is discharged into the oil outlet pipe from the pumping cylinder 1. Preferably, the diameter of the piston 21 is matched with the inner diameter of the drawing tube 1, and the thickness of the piston 21 is 3-6 mm.

Further, the material of the pumping cylinder 1 is glass or plastic, and the material of the pumping rod 2 is stainless steel. Preferably, the length of the drawing rod 2 is 30-40 cm. Furthermore, when the sampling liquid is an alkaline solution, the pumping cylinder 1, the oil inlet pipe 3, the sealing beads 4 and the oil outlet pipe 5 can be made of plastics; when the sampling liquid is other non-corrosive water samples or solution sample liquids, the material of the pumping cylinder 1, the oil inlet pipe 3, the sealing beads 4 and the oil outlet pipe 5 can be glass.

The following describes the use of a liquid sampler as shown in FIG. 1: taking a lubricating oil sample in a 200L sample barrel as an example, the oil inlet pipe 3 adopts an upper sample of a pipe section sample barrel, the oil inlet pipe 3 is inserted into the barrel, the pull rod 2 is pulled upwards by hands, and the single stop valve 6 is always in a closed state at the moment, because the piston 21 and the inner wall surface of the pull barrel 1 are well sealed, the pressure in the pull barrel 1 is smaller than the outside atmospheric pressure, the sealing bead 4 is pushed open by the atmospheric pressure, and the lubricating oil enters the pull barrel 1; the pumping rod 2 is pushed downwards, the pressure in the pumping cylinder 1 is greater than the outside atmospheric pressure, the sealing beads 4 fall back to the port of the oil inlet pipe, the one-way stop valve 6 is opened, so that the lubricating oil is discharged into the oil outlet pipe 5 from the pumping cylinder 1, a clean container is used for being arranged at the outlet of the oil outlet pipe 5, and the upper lubricating oil of about 300ml is collected. The oil inlet pipe 3 uses the middle sample of the two-section pipe sampling sample cylinder, the operation is repeated, and about 300ml of middle lubricating oil is collected. The oil inlet pipe 3 uses the lower sample of the three-segment sampling cartridge, the operation is repeated, and about 300ml of lower lubricating oil is collected. After the use, the liquid sampler is disassembled, the pumping cylinder 1, the pumping rod 2 and the sealing beads 4 are taken out, the oil inlet pipe 3 is disassembled into a plurality of sections of pipe sections, the oil outlet pipe 5 is disassembled into a plurality of sections of straight pipe sections and a plurality of sections of bent pipe sections, the one-way stop valve 6 is taken out, and the parts are cleaned by using tools and cleaning agents, dried and prepared for next use.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited thereto. In the technical idea scope of the present invention, it is possible to provide a solution of the present invention with a plurality of simple modifications to avoid unnecessary repetition, and the present invention is not described separately for various possible combinations. These simple variations and combinations should also be considered as disclosed in the present invention, all falling within the scope of protection of the present invention.

Claims

1. A liquid sampler, characterized in that the liquid sampler comprises a pumping barrel (1) and a pumping rod (2) with a piston (21), the pumping rod (2) is inserted into the pumping cylinder (1) from the first end of the pumping cylinder (1) and is in sliding sealing fit with the inner wall surface of the pumping cylinder (1) through the piston (21), a second end of the suction tube (1) opposite to the first end is provided with a suction channel for sucking the sampling liquid and a suction closing element capable of closing the suction channel when the suction rod (2) is pushed relative to the suction tube (1), the part of the pumping barrel (1) between the first end and the second end is provided with a drainage channel for discharging the sampling liquid in the pumping barrel (1) and a drainage sealing element capable of sealing the drainage channel when the pumping rod (2) is pulled relative to the pumping barrel (1).

2. Liquid sampler according to claim 1, characterized in that an oil inlet tube (3) is connected to the second end of the draw tube (1), the suction closure element comprising a sealing bead (4) arranged inside the draw tube (1), the sealing bead (4) being capable of closing the end of the oil inlet tube (3) facing the draw tube (1) to close the suction channel.

3. Liquid sampler according to claim 2, characterized in that the draw tube (1) has a conical bottom, the oil inlet tube (3) being connected to the bottom end of the conical bottom, the sealing bead (4) being located in the conical bottom.

4. A liquid sampler according to claim 3 wherein the drainage passage communicates with the interior of the draw tube (1) through the conical bottom.

5. Liquid sampler according to claim 2, characterized in that the oil inlet tube (3) comprises several sections of tube sections which are detachably connected, adjacent sections being connected by means of a screw thread.

6. The liquid sampler according to claim 2, wherein the sealing bead (4) is made of glass or plastic and has a diameter of 2.0cm to 2.5 cm.

7. The liquid sampler according to claim 1, wherein an oil outlet pipe (5) is connected to the side wall of the pumping barrel (1), and the drainage closure element comprises a one-way shut-off valve (6) mounted on the oil outlet pipe (5), the one-way shut-off valve (6) being arranged to allow only one-way drainage of the sampling liquid in the pumping barrel (1) through the oil outlet pipe (5).

8. The liquid sampler according to claim 7, wherein the flow line (5) comprises a plurality of sections of tubing removably connected, adjacent to each other, by a threaded connection.

9. The liquid sampler according to claim 1, characterized in that the outer edge of the piston (21) is provided with a sealing ring, by means of which it is sealingly engaged with the inner wall surface of the pumping barrel (1).

10. The liquid sampler according to claim 1, wherein the drawing tube (1) is made of glass or plastic, and the drawing rod (2) is made of stainless steel.