CN108645669B - Sampling depth range adjustable water sample collector - Google Patents
Sampling depth range adjustable water sample collector Download PDFInfo
- Publication number
- CN108645669B CN108645669B CN201810784344.4A CN201810784344A CN108645669B CN 108645669 B CN108645669 B CN 108645669B CN 201810784344 A CN201810784344 A CN 201810784344A CN 108645669 B CN108645669 B CN 108645669B
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- China
- Prior art keywords
- push rod
- sampling
- positioning
- piston
- knob
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/14—Suction devices, e.g. pumps; Ejector devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/14—Suction devices, e.g. pumps; Ejector devices
- G01N2001/1418—Depression, aspiration
- G01N2001/1427—Positive displacement, piston, peristaltic
Abstract
The invention discloses a water sample collector with an adjustable sampling depth range, which comprises a sampling pipe and a positioning device, wherein the lower end of the sampling pipe is provided with a one-way water stopping device; the positioning device comprises a push rod and a positioning piston fixed at the bottom of the push rod, the positioning piston is arranged in the sampling tube, and the upper part of the push rod extends out of the sampling tube; the positioning piston comprises a circular piston sheet, a water permeable ball cover and a small ball, the ball cover is fixed above the piston sheet, the small ball is positioned in the ball cover and can move up and down, the diameter of the small ball is larger than the inner diameter of the piston sheet, a push rod is fixed at the top of the ball cover, the periphery of the piston sheet and the pipe wall of the sampling pipe are sealed, the push rod is pushed to realize the vertical movement of the positioning piston along the pipe wall, the height of the sampling pipe cavity is adjusted, and the purpose of adjusting the sampling depth range is achieved. The positioning piston has the positioning function and the one-way water stopping function at the same time; the invention has simple structure, wide application range and convenient operation, and can be respectively applied to depth-fixed sampling of underground water and surface water.
Description
Technical Field
The invention relates to a water sample collector, in particular to a water sample collector with an adjustable sampling depth range.
Background
The collection of surface water and groundwater samples is an important technical work in the field of water quality analysis and monitoring, and because the layering phenomenon of the groundwater and the surface water is obvious, the physical and chemical characteristics, the biological population composition and the pollutant distribution of different layers of water bodies have obvious differences. Therefore, the sampling device can accurately position in the water sample collection process, realizes the sampling of the water sample within a specific depth range, and has important significance for acquiring scientific water quality monitoring data and guiding environmental investigation and environmental remediation.
The water sample collector who uses at present, most sampling height is fixed, can not adjust the volume, the degree of depth and the degree of depth scope of the water sample of gathering according to the site conditions is nimble, consequently need develop the sampling depth scope adjustable, can gather the collector of the mixed water sample of different degree of depth scopes, and this collector structure is simple and easy simultaneously, convenient operation.
Disclosure of Invention
The invention aims to provide a water sample collector with adjustable sampling depth range, which has simple structure, wide application range and long service life.
The purpose of the invention is realized by the following technical scheme:
a water sample collector with adjustable sampling depth range is characterized by comprising a sampling pipe and a positioning device, wherein the lower end of the sampling pipe is provided with a one-way water stopping device; the positioning device comprises a push rod and a positioning piston fixed at the bottom of the push rod, the positioning piston is arranged in the sampling tube, and the upper part of the push rod extends out of the sampling tube; the positioning piston comprises a circular piston sheet, a water permeable ball cover and a small ball, the ball cover is fixed above the piston sheet, the small ball is positioned in the ball cover and can move up and down, the diameter of the small ball is larger than the inner diameter of the piston sheet, a push rod is fixedly connected to the top of the ball cover, the periphery of the piston sheet and the pipe wall of the sampling pipe are sealed, the push rod is pushed to realize the vertical movement of the positioning piston along the pipe wall, the height of the sampling pipe is adjusted, and the purpose of adjusting the sampling depth range is achieved. Wherein, the density of the small balls is moderate, namely, the small balls float upwards when the collector is ensured to sink, and the small balls sink when the collector is lifted.
Preferably, the positioning device further comprises a knob which is connected with the push rod in a screwing mode, and the push rod can drive the positioning piston to move up and down by rotating the knob under the action of threads between the knob and the push rod.
Preferably, the knob is an improved nut, and is specifically an annular body, the inner surface of the knob is provided with threads, the lower part of the outer periphery of the knob is provided with a circle of grooves, the inner wall of the upper end of the sampling tube is provided with a circle of clamping positions, and the grooves of the knob are connected with the clamping positions of the sampling tube and can rotate relatively.
Preferably, the positioning device further comprises a positioning member for preventing the push rod from rotating along with the knob, and the positioning member is fixed on the sampling tube.
Preferably, the push rod is a modified screw rod, the cross section of the push rod is non-full circular, and the circular arc part of the push rod is provided with threads; the shape of the inner ring of the positioning piece is consistent with the cross section of the push rod.
Preferably, the collector further comprises a protective sleeve, the protective sleeve is in threaded connection with the upper end of the sampling tube, and the upper end of the protective sleeve is a water passing port.
Preferably, the one-way water stopping device is a small ball type, the water inlet end of the sampling pipe is a trapezoidal pipe head with a small front opening and a large rear opening, the small ball is arranged in the pipe head, and a stop rod limiting the small ball to move in the trapezoidal pipe head is arranged on the pipe wall.
Preferably, the sampling tube is transparent, and the sampling tube is marked with scales.
Preferably, the knob is provided with a position locking piece, and after the height of the sampling tube cavity is adjusted, the knob is locked to prevent the sampling tube cavity from rotating again.
Preferably, all parts involved in the collector are made of corrosion-resistant materials.
The positioning piston is adjusted to a preset position before sampling, the sampler is placed into water, in the process of sinking, the small balls of the one-way water stopping device float upwards, a water sample enters the sampling pipe, the small balls in the positioning piston move upwards under the action of the water, the water is discharged from the water passing port of the protective sleeve through the middle of the piston piece, after the preset sampling depth is reached, the sampler is lifted upwards, the two small balls move downwards under the action of the water, and meanwhile, the middle of the piston piece and the one-way water stopping device are sealed, and sampling is completed.
The invention has the following advantages and beneficial effects:
(1) the positioning piston has the positioning and one-way water stopping functions at the same time, and the whole sampling pipe can be filled with water during sampling; during the sample, the one-way sealing device of positioning piston seals, can take the water sample in the predetermined depth range, and can not receive the interference of positioning piston upper portion water sample.
(2) The invention has the advantages of simple structure, convenient operation and wide application range, and can be respectively applied to depth-fixed sampling of underground water and surface water.
Drawings
Fig. 1 is a schematic structural diagram of a collector of the invention.
Fig. 2 is a schematic structural diagram of the positioning device.
Fig. 3 is a schematic structural diagram of the positioning piston.
Fig. 4 is a cross-sectional view of the push rod.
Fig. 5 is a schematic diagram of a piston plate.
FIG. 6 is a cross-sectional view of a positioning member for preventing rotation of the push rod.
Detailed Description
As shown in the figure, the water sample collector with the adjustable sampling depth range comprises a collector 1 and a water outlet pipe 2, wherein the lower end of the collector 2 is provided with a one-way water stopping device 4; the positioning device 3 comprises a push rod 8, a positioning piston 11 fixed at the bottom of the push rod 8, a knob 9 and a positioning piece 10 for preventing the push rod from rotating along with the knob 9. The knob 9 is an improved nut, and is specifically an annular body, the inner surface of which is provided with threads, the lower part of the periphery of which is provided with a circle of grooves, the inner wall of the upper end of the sampling tube is provided with a circle of clamping positions, and the grooves of the knob are connected with the clamping positions of the sampling tube and can rotate relatively. A position locking piece 16 is arranged on the knob.
The push rod 8 is a modified screw rod, the cross section of the push rod is non-full circular (including partial circular arc), as shown in fig. 4, wherein the circular arc part is provided with threads; the positioning element 10 is fixed on the sampling tube 2, and the shape of the inner ring of the positioning element 10 is consistent with the cross section of the push rod, as shown in fig. 6.
The positioning piston 11 is arranged in the sampling pipe 2, and the upper part of the push rod 8 extends out of the sampling pipe; the positioning piston 11 comprises a circular piston sheet 14, a water permeable ball cover 12 and a small ball 13, the ball cover 12 is fixed above the piston sheet 14, the small ball 13 is positioned in the ball cover 12 and can move up and down, and the diameter of the small ball 13 is larger than the inner diameter of the piston sheet, so that the small ball cannot fall down from the middle part of the piston sheet 14. The push rod 8 is fixed on the top of the spherical cover 12, and the periphery of the piston sheet 14 is sealed with the pipe wall of the sampling pipe 2. The push rod 8 drives the positioning piston 11 to move up and down by rotating the knob 9.
The one-way water stopping device is of a small ball type, the water inlet end of the sampling pipe is a trapezoidal pipe head with a small front opening and a large rear opening, the small ball is arranged in the pipe head, and a stop rod limiting the small ball to move in the trapezoidal pipe head is arranged on the pipe wall.
The sampling tube 2 is transparent, and scales are marked on the sampling tube.
Before sampling, determining the sampling depth and the depth span range, moving a positioning piston 11 to a preset depth by a push rod 8 through rotating a knob 9, then installing a protective sleeve 15, and starting sampling, wherein at the moment, a one-way water stop valve (the positioning piston 11) at the bottom end of the push rod 8 and a one-way water stop device 4 at the bottom end of a sampling pipe 2 are both opened, and water enters from the bottom; after the sampling is accomplished, mention sampling pipe 2 through stay cord 7, the one-way stagnant water valve of 8 bottoms of push rod and the one-way sealing device 4 of 2 bottoms of sampling pipe seal this moment, use the form that the bottom was drained to go on during the sample, the one-way stagnant water valve of 8 bottoms of push rod is the off-state this moment, has guaranteed that the sample of taking is the water sample of predetermined degree of depth span scope, and does not receive the interference of positioning piston 11 upper portion water.
Claims (9)
1. A water sample collector with adjustable sampling depth range is characterized by comprising a sampling pipe and a positioning device, wherein the lower end of the sampling pipe is provided with a one-way water stopping device; the positioning device comprises a push rod and a positioning piston fixed at the bottom of the push rod, the positioning piston is arranged in the sampling tube, and the upper part of the push rod extends out of the sampling tube; the positioning piston comprises a circular piston sheet, a water permeable ball cover and a small ball, the ball cover is fixed above the piston sheet, the small ball is positioned in the ball cover and can move up and down, the diameter of the small ball is larger than the inner diameter of the piston sheet, the push rod is fixedly connected to the top of the ball cover, the periphery of the piston sheet is sealed with the pipe wall of the sampling pipe, and the push rod is pushed to realize the reciprocating of the positioning piston along the pipe wall.
2. The collector according to claim 1 wherein the positioning device further comprises a knob rotatably connected to the push rod, and the push rod drives the positioning piston to move up and down by rotating the knob.
3. The collector according to claim 2 wherein the knob is an annular body, the inner surface of the knob is provided with threads, the lower part of the outer periphery of the knob is provided with a circle of grooves, the inner wall of the upper end of the sampling tube is provided with a circle of clamping positions, and the grooves of the knob are embedded with the clamping positions of the sampling tube and can rotate relatively.
4. A collector according to claim 1, 2 or 3 wherein the positioning means further comprises a positioning member for preventing the push rod from rotating with the knob, the positioning member being secured to the sampling tube.
5. The collector of claim 4, wherein the cross section of the push rod is non-full circular, wherein the circular arc part is threaded; the shape of the inner ring of the positioning piece is consistent with the cross section of the push rod.
6. The collector of claim 1, 2 or 3 further comprising a protective sleeve, wherein the protective sleeve is in threaded connection with the upper end of the sampling tube, and the upper end of the protective sleeve is a water passing port.
7. A collector according to claim 1, 2 or 3 wherein the one-way water stop device is a small ball type, the water inlet end of the sampling tube is a trapezoidal tube head with a small front opening and a large rear opening, the small ball is arranged in the tube head, and a stop rod for limiting the small ball to move in the trapezoidal tube head is arranged on the tube wall.
8. A collector as claimed in claim 1, 2 or 3 wherein the sample tube is transparent and is graduated.
9. A collector as claimed in claim 2 or 3 wherein the knob is provided with a position lock.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810784344.4A CN108645669B (en) | 2018-07-17 | 2018-07-17 | Sampling depth range adjustable water sample collector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810784344.4A CN108645669B (en) | 2018-07-17 | 2018-07-17 | Sampling depth range adjustable water sample collector |
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| Publication Number | Publication Date |
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| CN108645669A CN108645669A (en) | 2018-10-12 |
| CN108645669B true CN108645669B (en) | 2020-07-17 |
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| CN201810784344.4A Active CN108645669B (en) | 2018-07-17 | 2018-07-17 | Sampling depth range adjustable water sample collector |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110261174B (en) * | 2019-06-06 | 2021-09-17 | 山东省水利科学研究院 | Sampling device for water quality detection and using method thereof |
| CN112504756B (en) * | 2020-12-07 | 2023-07-18 | 太原海纳辰科仪器仪表有限公司 | Sampling device for depth-adjustable extraction type environmental water pollution treatment |
| CN114323795A (en) * | 2021-12-31 | 2022-04-12 | 山东省地质矿产勘查开发局第一地质大队（山东省第一地质矿产勘查院） | A water sample collection system for geological survey |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201955253U (en) * | 2011-03-05 | 2011-08-31 | 卢宇昊 | Ditch surface water sampler |
| CN205958305U (en) * | 2016-08-29 | 2017-02-15 | 中国长江电力股份有限公司 | Novel oil appearance collector |
| CN208568380U (en) * | 2018-07-17 | 2019-03-01 | 广州市璞境生态保护技术有限公司 | A kind of adjustable water sampler of sampling depth range |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4409850A (en) * | 1982-03-04 | 1983-10-18 | Zeck Ted E | Portable sample vessel |
| CN205483653U (en) * | 2016-01-22 | 2016-08-17 | 上田环境修复股份有限公司 | Hand -held type groundwater sample thief |
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2018
- 2018-07-17 CN CN201810784344.4A patent/CN108645669B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201955253U (en) * | 2011-03-05 | 2011-08-31 | 卢宇昊 | Ditch surface water sampler |
| CN205958305U (en) * | 2016-08-29 | 2017-02-15 | 中国长江电力股份有限公司 | Novel oil appearance collector |
| CN208568380U (en) * | 2018-07-17 | 2019-03-01 | 广州市璞境生态保护技术有限公司 | A kind of adjustable water sampler of sampling depth range |
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| CN108645669A (en) | 2018-10-12 |
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