CN109163937B - Water sample collector for preventing soluble gas and water sample from being separated - Google Patents
Water sample collector for preventing soluble gas and water sample from being separated Download PDFInfo
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- CN109163937B CN109163937B CN201811197542.7A CN201811197542A CN109163937B CN 109163937 B CN109163937 B CN 109163937B CN 201811197542 A CN201811197542 A CN 201811197542A CN 109163937 B CN109163937 B CN 109163937B
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- water sample
- water
- ring
- bottle body
- collector
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 226
- 238000000926 separation method Methods 0.000 claims abstract description 11
- 238000007789 sealing Methods 0.000 claims description 23
- 230000000903 blocking effect Effects 0.000 claims description 10
- 238000005070 sampling Methods 0.000 claims description 7
- 239000007787 solid Substances 0.000 claims 3
- 230000001681 protective effect Effects 0.000 claims 1
- 238000003466 welding Methods 0.000 claims 1
- 150000001875 compounds Chemical class 0.000 abstract description 7
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 abstract 1
- 230000002468 redox effect Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 15
- 208000035397 Ring chromosome 7 syndrome Diseases 0.000 description 4
- 239000012535 impurity Substances 0.000 description 3
- 238000002955 isolation Methods 0.000 description 3
- 230000000740 bleeding effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
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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
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention relates to a water sample collector for preventing soluble gas from being separated from a water sample, which structurally comprises: the sample handle, the handle fixed block, blockade the bottle lid, the twist grip, the water sample body, the graduation apparatus, the counter weight ring, a pedestal, the base protection pad, the end of sample handle is nested with the inside of handle fixed block, two seals about through the water sample collector, make the water sample collector fill up the inside container completely when gathering the water sample, do not leave a silk space, make the inside dissolved gas of water sample collector not have unnecessary space and water sample separation, thereby keep the accuracy of water sample data, and because the space has been filled up by the water sample, the water sample is difficult to produce great rocking in the collector when leading to transporting, make the water sample can't take place the physical volatilization in the collector, compound or complex inside is difficult to combine with the air to produce the redox effect simultaneously, further assurance water sample data's accuracy.
Description
Technical Field
The invention discloses a water sample collector for preventing soluble gas from being separated from a water sample, and relates to the field of water sample collection.
Background
A water sample collector is a water body container, and is used for sampling and storing environments such as an ecosystem, a water-containing machine and the like according to the requirements of research, so that substances in the sample are sent back to a laboratory under the condition of low change degree to research the content conditions of compounds, soluble gases and other impurities in the sample.
However, when water sampling is performed, redundant air spaces are easily left in the water sample collector, so that the soluble gas contained in the water sample in the collector is easily separated from the water, the content measurement of the soluble gas is deviated, a space is provided for the shaking fluctuation of the water in the transportation of the water sample, the water sample is subjected to physical volatilization, and the internal compound or complex generates hydrolysis and redox combined with air.
Therefore, it is necessary to provide a water sampler capable of preventing the separation of the soluble gas from the water sample.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a water sample collector for preventing soluble gas and water sample from being separated, and solves the problem that the content of the soluble gas, compounds or complex compounds in the water sample is changed during transportation because an air space is left in an internal container after the water sample is collected by the water sample collector.
(II) technical scheme
In order to achieve the purpose, the invention provides the following technical scheme: a water sample collector for preventing the separation of dissolved gas and water sample structurally comprises: sample carrying handle, carrying handle fixed block, blockade bottle lid, twist grip, water sample body, graduation apparatus, counter weight ring, base protection pad, the end of sample carrying handle inlays the cover mutually with the inboard of carrying handle fixed block, the inboard of carrying handle fixed block and the upper end both sides of water sample body are through welded mode fixed connection, the inside top with the water sample body that inlays the cover mutually of lower extreme of blockade bottle lid, the lower extreme of twist grip and the upper end fixed connection of water sample body, the graduation apparatus is installed to the positive surface embedding of water sample body, counter weight ring and same axle center are installed in the lower extreme embedding of water sample body, the lower surface of counter weight ring is laminated with the upper surface of base mutually, the lower extreme of base and the upper surface fixed connection of base protection pad.
According to the preferable scheme of the invention, the water sample bottle body comprises a bottle body outer shell, a water storage inner shell, a water sample chamber, a motor, a retarder, a rotary paddle, a water inlet ring, a switch gasket and a sealing valve, wherein the inner surface of the bottle body outer shell is attached to the outer surface of the water storage inner shell, the water storage inner shell and the water sample chamber are of an integrated structure, the motor is embedded and installed at the lower end of the bottle body outer shell, the upper end of the motor is embedded and installed at the lower end of the retarder, the upper end of the retarder is rotatably connected with the lower surface of the rotary paddle, the switch gasket is embedded and installed at the lower end of the bottle body outer shell, and the sealing valve is embedded and installed.
As a preferable scheme of the present invention, the water inlet ring includes a support ring, a water inlet hole, and a mounting hole, the support ring and the water inlet hole are of an integrated structure, and the mounting hole is installed at the lower end of the support ring and is of an integrated structure.
As a preferable scheme of the present invention, the bottle body housing includes a rotary baffle, water guide holes, and a sliding groove, two water guide holes are provided at a central portion of the rotary baffle, and the upper surface of the rotary baffle is provided with the sliding groove and is an integrated structure.
As the preferable scheme of the invention, the water storage inner shell comprises an inner shell base, a water inlet and a chute fixture block, wherein the inner shell base and the water inlet are of an integrated structure, and the upper end of the chute fixture block is fixedly connected with the lower surfaces of the two ends of the inner shell base.
As a preferable scheme of the present invention, the blockade bottle cap includes a cap body, a water isolation ring, and a water storage chamber, wherein the inside of the cap body is fixedly connected to the upper end of the water isolation ring, and the water isolation ring and the water storage chamber are integrated.
As a preferable scheme of the present invention, the sealing valve includes a fixing ring, a blocking block, a water outlet, a stop block, a switch hole, a rotary hinge, and a water flow baffle, wherein an inner side surface of the fixing ring is fixedly connected to a head end of the blocking block, the blocking block and the water outlet are integrated, an upper surface of the fixing ring is fixedly connected to a lower surface of the stop block, the stop block and the switch hole are integrated, the stop block is fixedly connected to two ends of the rotary hinge, and two sides of the rotary hinge are fixedly connected to a head end of the water flow baffle.
As the preferable scheme of the invention, the water guide hole is in a round hole structure with a wide lower part and a narrow upper part, and has better hydrophobicity compared with the common cylindrical hole in the prior art.
As a preferable scheme of the invention, one end of the inner side of the stop block is slightly shorter than the end of the inner side of the fixing ring by one section, so that the sealing performance is better than that of the prior art with equal distance.
As a preferable scheme of the present invention, the water inlet ring has an inverted trapezoidal ring structure, and the water inlet ring guides the inflow of water to a greater extent than a planar water inlet hole of the prior art.
(III) advantageous effects
Compared with the prior art, the invention provides a water sample collector for preventing the separation of the soluble gas and the water sample, which has the following beneficial effects:
1. the upper and lower seals of the water sample collector are used for completely filling the inner container when the water sample collector collects water samples without leaving a space, so that the dissolved gas in the water sample collector is not separated from the water sample in redundant space, the accuracy of the water sample data is maintained, and the space is filled with the water sample, so that the water sample is difficult to generate large shaking in the collector during transportation, the water sample cannot generate physical volatilization in the collector, and meanwhile, the inner compound or complex is difficult to combine with air to generate redox action, and the accuracy of the water sample data is further ensured.
2. After carrying out water sample collection, through locking blockade bottle lid to the water sample body bottleneck of still bleeding and making partly water sample reserve in the reservoir chamber, make the inside water sample that has certain water yield of storing of reservoir chamber seal the processing to sealing valve, prevent that the infiltration of other impurity and air from causing the influence to the water sample.
Drawings
Fig. 1 is a schematic structural diagram of a water sample collector for preventing separation of a soluble gas from a water sample.
Fig. 2 is a structural section view of a water sample collector for preventing the separation of the soluble gas and the water sample.
Fig. 3 is a schematic structural diagram of a water inlet ring according to the present invention.
Fig. 4 is a schematic structural cross-sectional view of a bottle body shell according to the present invention.
FIG. 5 is a schematic sectional view of the structure of a water storing inner shell of the present invention.
Fig. 6 is a schematic structural section view of a blockade bottle cap according to the present invention.
Fig. 7 is a top view of a structure of a sealing valve of the present invention.
Fig. 8 is a schematic structural section view of a sealing valve according to the present invention.
Fig. 9 is a schematic structural cross-sectional view of a sealing valve according to the present invention.
Description of reference numerals: a sampling handle-1, a handle fixing block-2, a sealing bottle cap-3, a rotary handle-4, a water sample bottle body-5, a scale-6, a counterweight ring-7, a base-8, a base protection pad-9, a bottle body outer shell-51, a water storage inner shell-52, a water sample chamber-53, a motor-54, a retarder-55, a rotary paddle-56, a water inlet ring-57, a switch gasket-58, a sealing valve-59, a support ring-571, a water inlet hole-572, a mounting hole-573, a rotary baffle-511, a water guide hole-512, a chute-513, an inner shell base-521, a water inlet hole-522, a chute clamping block-523, a cover body-31, a water stop ring-32, a water storage chamber-33, a fixing ring-591, a water storage chamber-33, a fixing ring, A blocking block-592, a water outlet-593, a stop-594, a switch hole-595, a rotating hinge-596 and a water flow baffle-597.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
Referring to fig. 1 to 9, the present invention provides a water sample collector for preventing the separation of a dissolved gas from a water sample, which comprises: sample carrying handle 1, carrying handle fixed block 2, blockade bottle lid 3, twist grip 4, water sample body 5, graduation apparatus 6, counter weight ring 7, base 8, base protection pad 9, the end of sample carrying handle 1 is nested mutually with the inboard of carrying handle fixed block 2, welded mode fixed connection is passed through to the inboard of carrying handle fixed block 2 and the upper end both sides of water sample body 5, blockade bottle lid 3's the inside top of lower extreme is nested mutually with water sample body 5, twist grip 4's lower extreme and water sample body 5's upper end fixed connection, graduation apparatus 6 is installed to water sample body 5's positive surface embedding, counter weight ring 7 and same axle center are installed to the lower extreme embedding of water sample body 5, the lower surface of counter weight ring 7 is laminated with the upper surface of base 8 mutually, the lower extreme of base 8 and the upper surface fixed connection of base protection pad 9.
The water inlet ring 57 comprises a support ring 571, a water inlet hole 572 and a mounting hole 573, wherein the support ring 571 and the water inlet hole 572 are of an integrated structure, and the mounting hole 573 is arranged at the lower end of the support ring 571 and is of an integrated structure.
The bottle body shell 51 comprises a rotary baffle 511, water guide holes 512 and a sliding groove 513, wherein the center part of the rotary baffle 511 is provided with two water guide holes 512, and the upper surface of the rotary baffle 511 is provided with the sliding groove 513 and is of an integrated structure.
The water storage inner shell 52 comprises an inner shell base 521, a water inlet 522 and a sliding chute clamping block 523, the inner shell base 521 and the water inlet 522 are of an integrated structure, and the upper end of the sliding chute clamping block 523 is fixedly connected with the lower surfaces of the two ends of the inner shell base 521.
The sealing valve 59 comprises a fixing ring 591, a blocking block 592, a water outlet 593, a stop 594, a switch hole 595, a rotating hinge 596 and a water flow baffle 597, wherein the inner side face of the fixing ring 591 is fixedly connected with the head end of the blocking block 592, the blocking block 592 and the water outlet 593 are of an integrated structure, the upper surface of the fixing ring 591 is fixedly connected with the lower surface of the stop 594, the stop 594 and the switch hole 595 are of an integrated structure, the stop 594 and the two ends of the rotating hinge 596 are fixedly connected, and the two sides of the rotating hinge 596 are fixedly connected with the head end of the water flow baffle 597.
The water guide hole 512 is a round hole structure with a wide bottom and a narrow top, and has better hydrophobicity compared with common cylindrical holes in the prior art, so that water can absorb more water when passing through the water guide hole 512 and is conveyed to the water inlet hole 522 from 1, and the collecting speed of the water sample collector is improved.
The inner end of the stop 594 is slightly shorter than the inner end of the fixing ring 591, so that the sealing performance is better than that of the prior art due to the same length, when the water flow baffle 597 is covered, the tail end of the water flow baffle 597 just covers the protruding part of the fixing ring 591, and the sealing and blocking performance of the fixing ring 591 is improved.
Go into water ring 57 for falling trapezoidal ring structure, compare prior art's plane inlet hole and have the inflow that the bigger range guided water, when making water sample collector enter into the water source of collection, rivers are strikeed along trapezoidal range, have bigger water yield to pass inlet hole 572, get into the collector under rotatory paddle 56's promotion in for catchment efficiency makes water sample collection more quick.
The working principle is as follows: when water sample collection is carried out, the sealing bottle cap 3 is unscrewed, the motor 54 is opened, the water sample collector enters a pre-collection state, the sampling handle 1 is lifted to sink the water sample collector into the collected water sample, when the water sample sinks in the collector, the bottom of the water sample bottle body 5 is impacted, the water sample is flushed into the water ring 57, the water sample passes through the water guide hole 512 and the water inlet hole 522 under the pushing of the rotary blade 56 in the water ring 57 to enter the water sample chamber 53, the water flow negative pressure in the water ring 57 is caused to continuously suck and push the water sample from the water inlet hole 572 at the same time, the water sample is collected, the water sample is more and more collected under the pushing of the rotary blade 56, the whole water sample chamber 53 is filled and overflows from the bottle mouth, at this time, the rotary handle 4 drives the water storage inner shell 52 to rotate in the bottle body outer shell 51 through the rotary handle 4, so that the switch gasket 58 is sealed, and the water sample, the sealing bottle cap 3 is screwed up, the water stop ring 32 is pressed down to the sealing valve 59, the water sample chamber 53 is completely sealed, a certain amount of water sample is reserved in the water storage chamber 33 to seal the sealing valve 59 so as to keep the initial property of the water sample, and then the water sample is transported back to the laboratory to be detected.
Has the advantages that: the upper and lower seals of the water sample collector are used for completely filling the inner container when the water sample collector collects water samples without leaving a space, so that the dissolved gas in the water sample collector is not separated from the water sample in redundant space, the accuracy of the water sample data is maintained, and the space is filled with the water sample, so that the water sample is difficult to generate large shaking in the collector during transportation, the water sample cannot generate physical volatilization in the collector, and meanwhile, the inner compound or complex is difficult to combine with air to generate redox action, and the accuracy of the water sample data is further ensured.
After carrying out water sample collection, through locking blockade bottle lid to the water sample body bottleneck of still bleeding and making partly water sample reserve in the reservoir chamber, make the inside water sample that has certain water yield of storing of reservoir chamber seal the processing to sealing valve, prevent that the infiltration of other impurity and air from causing the influence to the water sample.
The specific embodiments described herein are merely illustrative of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the scope of the invention or exceeding the scope of the claims appended hereto.
Claims (1)
1. A water sample collector for preventing the separation of dissolved gas and water sample structurally comprises: the sampling lifting handle comprises a sampling lifting handle (1), a lifting handle fixing block (2), a blocking bottle cap (3), a rotating handle (4), a water sample bottle body (5), a scale (6), a counterweight ring (7), a base (8) and a base protection pad (9), wherein the tail end of the sampling lifting handle (1) is embedded and sleeved with the inner side of the lifting handle fixing block (2), the inner side of the lifting handle fixing block (2) is fixedly connected with the two sides of the upper end of the water sample bottle body (5) in a welding mode, the inner part of the lower end of the blocking bottle cap (3) is embedded and sleeved with the top end of the water sample bottle body (5), the lower end of the rotating handle (4) is fixedly connected with the upper end of the water sample bottle body (5), the scale (6) is embedded and installed on the front surface of the water sample bottle body (5), the counterweight ring (7) is embedded and installed at the lower end of the water sample bottle body (5) and has the same axis, the lower surface of the counterweight ring, the lower end of the base (8) is fixedly connected with the upper surface of the base protective pad (9); the water sample bottle body (5) comprises a bottle body outer shell (51), a water storage inner shell (52), a water sample chamber (53), a motor (54), a retarder (55), a rotary paddle (56), a water inlet ring (57), a switch gasket (58) and a sealing valve (59), wherein the inner surface of the bottle body outer shell (51) is attached to the outer surface of the water storage inner shell (52), the water storage inner shell (52) and the water sample chamber (53) are of an integrated structure, the motor (54) is embedded and mounted at the lower end of the bottle body outer shell (51), the upper end of the motor (54) is embedded and mounted at the lower end of the retarder (55), the upper end of the retarder (55) is rotatably connected with the lower surface of the rotary paddle (56), the switch gasket (58) is embedded and mounted at the lower end of the bottle body outer shell (51), and the sealing valve (59) is embedded and mounted at the upper end of the; the water inlet ring (57) comprises a support ring (571), a water inlet hole (572) and a mounting hole (573), the support ring (571) and the water inlet hole (572) are of an integrated structure, and the mounting hole (573) is arranged at the lower end of the support ring (571) and is of an integrated structure; the bottle body shell (51) comprises a rotary baffle (511), two water guide holes (512) and a sliding groove (513), wherein the center part of the rotary baffle (511) is provided with the two water guide holes (512), and the upper surface of the rotary baffle (511) is provided with the sliding groove (513) and is of an integrated structure; the water storage inner shell (52) comprises an inner shell base (521), a water inlet hole (522) and a sliding chute clamping block (523), the inner shell base (521) and the water inlet hole (522) are of an integrated structure, and the upper end of the sliding chute clamping block (523) is fixedly connected with the lower surfaces of the two ends of the inner shell base (521); the blockade bottle cap (3) comprises a cap body (31), a water isolating ring (32) and a water storage chamber (33), the inside of the cap body (31) is fixedly connected with the upper end of the water isolating ring (32), and the water isolating ring (32) and the water storage chamber (33) are of an integrated structure; sealing valve (59) are including solid fixed ring (591), separation piece (592), delivery port (593), dog (594), switch hole (595), rotatory hinge (596), rivers baffle (597), the medial surface of solid fixed ring (591) and the head end fixed connection of separation piece (592), separation piece (592) and delivery port (593) are the integral structure, the upper surface of solid fixed ring (591) and the lower surface fixed connection of dog (594), dog (594) and switch hole (595) are the integral structure, the both ends fixed connection of dog (594) and rotatory hinge (596), the both sides of rotatory hinge (596) and the head end fixed connection of rivers baffle (597).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811197542.7A CN109163937B (en) | 2018-10-15 | 2018-10-15 | Water sample collector for preventing soluble gas and water sample from being separated |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811197542.7A CN109163937B (en) | 2018-10-15 | 2018-10-15 | Water sample collector for preventing soluble gas and water sample from being separated |
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| Publication Number | Publication Date |
|---|---|
| CN109163937A CN109163937A (en) | 2019-01-08 |
| CN109163937B true CN109163937B (en) | 2021-05-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811197542.7A Expired - Fee Related CN109163937B (en) | 2018-10-15 | 2018-10-15 | Water sample collector for preventing soluble gas and water sample from being separated |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10185907A (en) * | 1996-12-24 | 1998-07-14 | Tomofumi Kobayashi | Freeness measuring apparatus |
| CN207717424U (en) * | 2018-01-26 | 2018-08-10 | 上海国齐检测技术有限公司 | A kind of hand-held is convenient for the hydrophore of acquisition |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205352758U (en) * | 2016-01-28 | 2016-06-29 | 佛山市稚蒙环境科技有限公司 | Portable water sampling ware |
| CN206725272U (en) * | 2017-06-01 | 2017-12-08 | 山东嘉源检测技术有限公司 | Substrate sludge sampling servicing unit |
| CN207114239U (en) * | 2017-07-14 | 2018-03-16 | 中恒工程设计院有限公司 | A kind of sewage plant and regeneration water factory water sampling device |
| CN207556915U (en) * | 2017-12-14 | 2018-06-29 | 杭州环析检测科技有限公司 | A kind of stable type water body sampler |
-
2018
- 2018-10-15 CN CN201811197542.7A patent/CN109163937B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10185907A (en) * | 1996-12-24 | 1998-07-14 | Tomofumi Kobayashi | Freeness measuring apparatus |
| CN207717424U (en) * | 2018-01-26 | 2018-08-10 | 上海国齐检测技术有限公司 | A kind of hand-held is convenient for the hydrophore of acquisition |
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| CN109163937A (en) | 2019-01-08 |
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Effective date of registration: 20210419 Address after: 226600 Jiangsu city of Nantong province Haian County Jianghai Road No. 88 Applicant after: NANTONG HUANGHAI CHEMICAL MACHINERY Co.,Ltd. Address before: 362321 No. 30, Meifeng Village, Meishan Town, Nanan City, Quanzhou City, Fujian Province Applicant before: NAN'AN MEIYIN MACHINERY TECHNOLOGY Co.,Ltd. |
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