CN112985902A - Self-floating water quality sampling device and using method thereof - Google Patents
Self-floating water quality sampling device and using method thereof Download PDFInfo
- Publication number
- CN112985902A CN112985902A CN202110407408.0A CN202110407408A CN112985902A CN 112985902 A CN112985902 A CN 112985902A CN 202110407408 A CN202110407408 A CN 202110407408A CN 112985902 A CN112985902 A CN 112985902A
- Authority
- CN
- China
- Prior art keywords
- cavity
- water
- rod
- buoy
- shell
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Images
Classifications
-
- 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
Landscapes
- 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 discloses a self-floating water quality sampling device and a use method thereof, and the device comprises an upper shell, a water storage mechanism positioned in the upper shell, a sampling cavity positioned below the water storage mechanism and a starting mechanism.
Description
Technical Field
The invention relates to a river and lake water quality sampling device, in particular to a self-floating water quality sampling device and a using method thereof.
Background
The sampling work of rivers, lakes and reservoirs is an important content of environmental science research and water environment protection and management work, and plays an important role in environmental monitoring, particularly in water quality monitoring of rivers, lakes and lakes, the water sampling work of rivers and lakes mostly needs special workers to put a sampler into the sampler for filling, but the existing sampling device for water quality is simpler, a rope stud sampling bottle is usually thrown into water to collect a water sample, the bottle is filled to finish sampling after being submerged into the water, the sampling device is relatively simple and crude, is easily influenced by surface water impurities, the existing sampling device can not determine whether the sampling work is finished, and a sampler can not realize the prompt function after the water sampling is finished, so that the sampler is taken out in time too early to cause over-less sampling, the problem of unable enough water samples of taking, consequently if set up a sample thief accurate, isolated top water and possess independently to show the sample completion is the technical problem who awaits a urgent need to solve.
Disclosure of Invention
In order to overcome the technical problems, the self-floating water quality sampling device and the use method provided by the invention can effectively realize the isolation of the surface water body, and can automatically float after the sampling is finished, so that the sampling operation is conveniently finished.
In order to solve the technical problems, the invention provides a self-floating water quality sampling device which comprises an upper shell, a water storage mechanism positioned in the upper shell, a sampling cavity positioned below the water storage mechanism and a starting mechanism, and is characterized in that the upper shell is of a hollow cuboid structure with an opening at the bottom, a vertical chute is arranged on one side of the side wall of the upper shell, an exhaust hole is arranged above the vertical chute, the water storage mechanism comprises a shell, a first float positioned above the shell, a first cavity, a second cavity and a lifting mechanism positioned in the shell, wherein the first water inlet and the second water inlet are respectively arranged on one side of the first cavity and one side of the second cavity, a third water inlet is arranged at the bottom of the second cavity, the lifting mechanism comprises a second float, an upper horizontal rod, a vertical rod and a lower horizontal rod, wherein the upper horizontal rod and the lower horizontal rod are respectively positioned in the first cavity and the second cavity, the vertical rod is respectively fixed with the upper horizontal rod and the lower horizontal rod, the second buoy is fixedly connected with the upper horizontal rod, the vertical rod is attached to the left side of the shell and can move up and down along with the second buoy to open a second water inlet, a fixed block is arranged on one side of the shell and matched with the vertical chute to limit the displacement of the upper shell relative to the water storage mechanism, the height of the vertical chute is greater than that of the fixed block from the top of the shell, the sampling cavity is of a hollow cuboid structure with an opening at the upper part, a boss is arranged at the bottom of the water storage mechanism and connected with the sampling cavity in a threaded detachable matched manner, a base plate is arranged at the bottom of the sampling cavity, cavities are arranged on two sides of the base plate, the starting mechanism comprises an outer frame body, a third buoy fixedly connected with the outer frame body, an ejector rod and a rotating mechanism, wherein the outer frame body is arranged outside the sampling cavity, the inner side wall of the outer frame body is provided with a groove, the rotating mechanism is arranged in the cavity of the chassis and comprises a rotating rod, a rotating end, a torsion spring, a transmission rod and a fourth buoy, wherein two sides of the rotating rod are rotatably connected with the cavity of the chassis, the torsion spring is erected on the rotating rod, one end of the torsion spring is fixed with the inner wall of the cavity, the other end of the torsion spring is fixed with the rotating end, the torsion spring is used for controlling the resetting of the rotating end, one side of the transmission rod is connected with the rotating rod, the other side of the transmission rod is fixedly connected with the fourth buoy, and when the fourth buoy is not stressed, the rotating end is contacted with the.
Furthermore, the first buoy is fixedly connected with the shell through a steel wire rope or an elastic rope.
Further, a handle is arranged below the chassis, a heavy object such as an iron block is arranged at the chassis, and a rope is fixed above the upper shell.
Further, the height of the ejector rod is larger than that of the vertical sliding groove.
Further, when the device is static, the fixed block is matched with the upper part of the vertical chute, and the upper shell shields the first water inlet and the second water inlet.
The use method of the self-floating water quality sampling device according to claim 1, which is characterized by comprising the following steps:
a. inverting into water: lifting a handle at the base plate by hands, putting the upper shell into a river, after the device is inverted, contacting the bottom of the vertical chute with a fixed block, after the device is pressed downwards, because the upper shell is arranged in a hollow manner, the water storage mechanism is displaced relative to the outer shell, a second water inlet is shielded, the fixed block slides to the top of the vertical chute, and the device is turned over to be upright;
b. opening a water inlet: the fourth buoy is stressed to drive the transmission rod and the rotation end to rotate, the rotation end is separated from the outer frame body of the starting mechanism, the ejector rod is stressed to abut against the bottom of the upper shell upwards under the drive of the third buoy buoyancy, the fixed block slides to the bottom of the sliding chute, the first water inlet and the second water inlet are opened simultaneously, water firstly flows into the first cavity of the water storage mechanism from the first water inlet to drive the second buoy in the water storage mechanism to move upwards, the second water inlet is communicated with the third water inlet after the lifting mechanism moves upwards, and sampled water flows into the sampling cavity;
c. standing and floating: after the upper shell floats upwards, a gap is reserved between the vertical sliding groove and the topmost part of the shell of the water storage mechanism, water flows into the upper shell from the gap, a first buoy in the upper shell gradually tensions a steel wire rope along with the passage of time, water in the first cavity gradually rises to lift the lifting mechanism, a lower horizontal rod of the lifting mechanism lifts the water storage mechanism, and when the overall buoyancy of the buoy is larger than the overall weight of the device, the device floats upwards;
d. sampling: after the device is pulled up, the upper shell is screwed to take out the sample in the sampling cavity.
The invention has the beneficial technical effects that: according to the self-floating type water quality sampling device, after sampling is completed, the device floats upwards by using the buoyancy lifting device of the device, so that sampling operation is conveniently completed, the device is turned over after being inverted into water to enable the chassis to face downwards, the upper shell moves upwards under the driving of the starting mechanism, so that a water body is injected into the first cavity and the inner part of the upper shell, and the first buoy and the second buoy in the device are dragged to move upwards under the buoyancy force, so that the device integrally discharges water.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the sampling device of the present invention;
FIG. 2 is a schematic structural view of the upper housing of the present invention after floating;
FIG. 3 is a top view of the outer frame of the present invention;
fig. 4 is a schematic structural diagram of the rotating mechanism of the present invention.
The labels in the figures are: 1. the water storage device comprises an upper shell, 11, a vertical sliding groove, 12, an exhaust hole, 2, a water storage mechanism, 21, a shell, 211, a fixed block, 22, a first buoy, 23, a first cavity, 231, a first water inlet, 24, a second cavity, 241, a second water inlet, 242, a third water inlet, 25, a lifting mechanism, 251, a second buoy, 252, an upper horizontal rod, 253, a vertical rod, 254, a lower horizontal rod, 3, a sampling cavity, 31, a chassis, 32, a cavity, 4, a starting mechanism, 41, an outer frame, 411, a groove, 42, a third buoy, 43, a mandril, 44, a rotating mechanism, 441, a rotating rod, 442, a rotating end, 443, a transmission rod, 444 and a fourth buoy.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third," if used, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "in communication" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in the figures, the self-floating water quality sampling device comprises an upper shell 1, a water storage mechanism 2 positioned in the upper shell 1, a sampling cavity 3 positioned below the water storage mechanism 2 and a starting mechanism 4, and is characterized in that the upper shell 1 is a hollow cuboid structure with an opening at the bottom, a vertical chute 11 is arranged on one side of the side wall of the upper shell, an exhaust hole 12 is arranged above the vertical chute 11, the water storage mechanism 2 comprises a shell 21, a first float 22 positioned above the shell, a first cavity 23 and a second cavity 24 positioned in the shell, and a lifting mechanism 25, wherein a first water inlet 231 and a second water inlet 241 are respectively arranged on one side of the first cavity 23 and one side of the second cavity 24, a third water inlet 242 is arranged at the bottom of the second cavity 24, the lifting mechanism 25 comprises a second float 251, an upper horizontal rod 254, a vertical rod 253 and a lower horizontal rod 254, wherein the upper horizontal rod 252 and the lower horizontal rod are respectively positioned in the first cavity 23 and the second cavity 24, the vertical rod 253 is respectively fixed with the upper horizontal rod 252 and the lower horizontal rod 254, the second buoy 251 is fixedly connected with the upper horizontal rod 252, the vertical rod 253 is attached to the left side of the shell 21 and can move up and down along with the second buoy 251 to open the second water inlet 241, a fixed block 211 is arranged on one side of the shell, the fixed block 211 is matched with the vertical chute 11 and used for limiting the displacement of the upper shell 1 relative to the water storage mechanism 2, the height of the vertical chute 11 is greater than the height of the fixed block 211 from the top of the shell 21, the sampling cavity 3 is of a hollow cuboid structure with an opening at the upper part, a boss is arranged at the bottom of the water storage mechanism 2 and can be detachably matched and connected with the sampling cavity 3 in a threaded manner, a base plate 31 is arranged at the bottom of the sampling cavity 3, cavities 32 are arranged on two sides of the base plate 31, and the starting mechanism 4 comprises an outer frame body 41 and a third buoy 42 fixedly connected, The top bar 43 and the rotating mechanism 44 are located above the outer frame, wherein the outer frame 41 is located outside the sampling cavity 3 and can move up and down along the sampling cavity 3, the inner side wall of the outer frame 41 is provided with a groove 411, the rotating mechanism 44 is located in the chassis cavity 32 and comprises a rotating rod 441, a rotating end 442, a torsion spring, a transmission rod 443 and a fourth float 444, wherein two sides of the rotating rod 441 are rotatably connected with the chassis cavity, the torsion spring is erected on the rotating rod 441, one end of the torsion spring is fixed with the inner wall of the cavity, the other end of the torsion spring is fixed with the rotating end 442, the torsion spring is used for controlling the resetting of the rotating end 442, one side of the transmission rod 443 is connected with the rotating rod, the other side of the transmission rod is fixedly connected with the fourth float 444, and when the fourth float 444 is not stressed, the rotating end 442 is.
As a further improvement of the invention, the first float 22 is fixedly connected with the housing 21 through a steel wire rope or an elastic rope, when the top rod 43 of the starting mechanism 4 lifts the upper housing 1 upwards, the vertical chute 11 and the gap of the top part of the housing 21 allow water to enter the upper housing 1, the first float 22 is lifted gradually, and when the steel wire rope is tensioned by the first float 22, the device is given an integral buoyancy.
As a further improvement of the present invention, a handle is arranged below the chassis 31, wherein a heavy object, such as an iron block, is arranged at the chassis 31, wherein the heavy object is used for ensuring that the chassis 31 is positioned at the lowest part of the device after the device is turned over integrally, and a rope is fixed above the upper shell 1.
As a further improvement of the invention, the height of the carrier rod 43 should be greater than the height of the vertical runner 11.
As a further improvement of the present invention, when the device is at rest, the fixed block 211 is engaged with the upper side of the vertical chute 11, and at this time, the upper housing covers the first and second water inlets 231, 241, and the device can be placed in an inverted manner, i.e. the upper housing 1 contacts with the ground or the vehicle, or the device is horizontally placed to lie on the ground or the vehicle.
The use method of the self-floating water quality sampling device according to claim 1, which is characterized by comprising the following steps:
a. inverting into water: lifting a handle at the chassis by hand, placing the upper shell 1 into a river, after the device is inverted, contacting the bottom of the vertical chute 11 with the fixed block 211, after the device is pressed downwards, because the upper shell 1 is arranged in a hollow way, the water storage mechanism 2 is displaced relative to the outer shell 1, shielding the second water inlet 241, sliding the fixed block 211 to the top of the vertical chute 11, and turning over to ensure that the device is upright and gradually sinks;
b. opening a water inlet: after the device enters water, the fourth float 444 is stressed to drive the transmission rod 443 and the rotating end 442 to rotate, the rotating end 442 is separated from the outer frame body 41 of the starting mechanism, the push rod 43 is stressed upwards to abut against the bottom of the upper shell 1 under the driving of the buoyancy of the third float 42, the fixed block 211 slides to the bottom of the sliding chute 11, the first water inlet 231 and the second water inlet 241 are opened simultaneously, water firstly flows into the first cavity 23 of the water storage mechanism from the first water inlet 231 to drive the second float 251 in the water storage mechanism to move upwards, the second water inlet 241 is communicated with the third water inlet 242 after the lifting mechanism 25 moves upwards, and sampled water flows into the sampling cavity 3;
c. standing and floating: after the upper shell 1 floats upwards, a gap is reserved between the vertical chute 11 and the topmost part of the water storage mechanism shell 21, water flows into the upper shell 1 from the gap, the first buoy 22 in the upper shell gradually tensions the steel wire rope along with the passage of time, water in the first cavity gradually rises, the lifting mechanism 25 is lifted, the lower horizontal rod 254 of the lifting mechanism 25 lifts the water storage mechanism 2, and when the overall buoyancy force borne by the first, second, third and fourth buoys is larger than the overall weight of the device, the device floats upwards;
d. sampling: after the device is pulled up, the upper shell 1 is screwed to take out the sample in the sampling cavity, and after the sampling is finished, the outer frame body 41 is pressed downwards to be matched with the rotating mechanism 44.
The above examples are merely representative of preferred embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, various changes, modifications and substitutions can be made without departing from the spirit of the present invention, and these are all within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (6)
1. A self-floating water quality sampling device comprises an upper shell, a water storage mechanism positioned in the upper shell, a sampling cavity positioned below the water storage mechanism and a starting mechanism, and is characterized in that the upper shell is of a hollow cuboid structure with an opening at the bottom, a vertical chute is arranged on one side of the side wall of the upper shell, an exhaust hole is arranged above the vertical chute, the water storage mechanism comprises a shell, a first float positioned above the shell, a first cavity, a second cavity and a lifting mechanism, wherein the first cavity and the second cavity are respectively provided with a first water inlet and a second water inlet, the bottom of the second cavity is provided with a third water inlet, the lifting mechanism comprises a second float, an upper horizontal rod, a vertical rod and a lower horizontal rod, the upper horizontal rod and the lower horizontal rod are respectively positioned in the first cavity and the second cavity, the vertical rod is respectively fixed with the upper horizontal rod and the lower horizontal rod, the second buoy is fixedly connected with the upper horizontal rod, the vertical rod is attached to the left side of the shell and can move up and down along with the second buoy to open a second water inlet, a fixed block is arranged on one side of the shell and matched with the vertical chute to limit the displacement of the upper shell relative to the water storage mechanism, the height of the vertical chute is greater than the height of the fixed block from the top of the shell, the sampling cavity is of a hollow cuboid structure with an upper opening, a boss is arranged at the bottom of the water storage mechanism and connected with the sampling cavity in a threaded detachable matched manner, a base plate is arranged at the bottom of the sampling cavity, cavities are arranged on two sides of the base plate, the starting mechanism comprises an outer frame body, a third buoy fixedly connected with the outer frame body, an ejector rod and a rotating mechanism, the outer frame body is arranged on the outer side of the sampling cavity, and a groove is arranged at the inner side wall of the outer, the rotating mechanism is arranged in the cavity of the chassis and comprises a rotating rod, a rotating end, a torsion spring, a transmission rod and a fourth buoy, wherein the two sides of the rotating rod are rotatably connected with the cavity of the chassis, the torsion spring is erected on the rotating rod, one end of the torsion spring is fixed with the inner wall of the cavity, the other end of the torsion spring is fixed with the rotating end, the torsion spring is used for controlling the reset of the rotating end, one side of the transmission rod is connected with the rotating rod, the other side of the transmission rod is fixedly connected with the fourth buoy, and when the fourth buoy is not stressed, the rotating end is contacted with a groove of the outer frame body.
2. The self-floating water quality sampling device according to claim 1, wherein the first buoy is fixedly connected with the shell through a steel wire rope or an elastic rope.
3. The self-floating water quality sampling device according to claim 1, wherein a handle is arranged below the chassis, a heavy object such as an iron block is arranged at the chassis, and a rope is fixed above the upper shell.
4. The self-floating water quality sampling device according to claim 1, wherein the height of the top rod is larger than that of the vertical chute.
5. The self-floating water sampling device of claim 1 wherein the fixed block engages the vertical chute when the device is at rest, and the upper housing shields the first and second water inlets.
6. The use method of the self-floating water quality sampling device according to claim 1, which is characterized by comprising the following steps:
a. inverting into water: lifting a handle at the base plate by hands, putting the upper shell into a river, after the device is inverted, contacting the bottom of the vertical chute with a fixed block, after the device is pressed downwards, because the upper shell is arranged in a hollow manner, the water storage mechanism is displaced relative to the outer shell, a second water inlet is shielded, the fixed block slides to the top of the vertical chute, and the device is turned over to be upright;
b. opening a water inlet: the fourth buoy is stressed to drive the transmission rod and the rotation end to rotate, the rotation end is separated from the outer frame body of the starting mechanism, the ejector rod is stressed to abut against the bottom of the upper shell upwards under the drive of the third buoy buoyancy, the fixed block slides to the bottom of the sliding chute, the first water inlet and the second water inlet are opened simultaneously, water firstly flows into the first cavity of the water storage mechanism from the first water inlet to drive the second buoy in the water storage mechanism to move upwards, the second water inlet is communicated with the third water inlet after the lifting mechanism moves upwards, and sampled water flows into the sampling cavity;
c. standing and floating: after the upper shell floats upwards, a gap is reserved between the vertical sliding groove and the topmost part of the shell of the water storage mechanism, water flows into the upper shell from the gap, a first buoy in the upper shell gradually tensions a steel wire rope along with the passage of time, water in the first cavity gradually rises to lift the lifting mechanism, a lower horizontal rod of the lifting mechanism lifts the water storage mechanism, and when the overall buoyancy of the buoy is larger than the overall weight of the device, the device floats upwards;
d. sampling: after the device is pulled up, the upper shell is screwed to take out the sample in the sampling cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110407408.0A CN112985902A (en) | 2021-04-15 | 2021-04-15 | Self-floating water quality sampling device and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110407408.0A CN112985902A (en) | 2021-04-15 | 2021-04-15 | Self-floating water quality sampling device and using method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112985902A true CN112985902A (en) | 2021-06-18 |
Family
ID=76340657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110407408.0A Withdrawn CN112985902A (en) | 2021-04-15 | 2021-04-15 | Self-floating water quality sampling device and using method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112985902A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116106081A (en) * | 2023-04-13 | 2023-05-12 | 北京承启通科技有限公司 | Floating type water quality detection device capable of self-sampling according to river water flow change |
-
2021
- 2021-04-15 CN CN202110407408.0A patent/CN112985902A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116106081A (en) * | 2023-04-13 | 2023-05-12 | 北京承启通科技有限公司 | Floating type water quality detection device capable of self-sampling according to river water flow change |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN212206690U (en) | Water sampling device for environmental detection | |
| CN112985902A (en) | Self-floating water quality sampling device and using method thereof | |
| CN212134174U (en) | Buoy type water quality detection device | |
| CN211978383U (en) | Simple quantitative deep-sea water sampler | |
| CN112415167B (en) | Device for detecting heavy metals in water and working method thereof | |
| CN212031447U (en) | Automatic sampling and sample reserving equipment for sewage discharge monitoring | |
| CN218847708U (en) | Ocean bottom water collection system | |
| CN207946235U (en) | A kind of gravity pillar snapper | |
| CN217542532U (en) | Clamping cover type water sampler auxiliary device | |
| CN219532579U (en) | Sampling device for water quality detection | |
| CN211825157U (en) | Detection sample collector for water pollution detection | |
| CN111175532B (en) | Portable water flow velocity measuring device for water conservancy detection | |
| CN112179710A (en) | Hydrology information acquisition device to river silt content | |
| CN117147234B (en) | Stable sampling device for water pollution treatment | |
| CN220164487U (en) | Sampling bucket | |
| CN219192490U (en) | Plateau lake water pollution is with monitoring buoy | |
| CN217845712U (en) | Sewage sampler | |
| CN219977882U (en) | Portable hydrologic water resource surveys device | |
| CN215811132U (en) | Water conservancy hydrology is with water level monitoring device who has crashproof | |
| CN210981899U (en) | Based on sampling device for sewage detection | |
| CN110849668A (en) | Surface water body sampling device for water quality detection | |
| CN220256800U (en) | Soaking tank for producing lucid ganoderma oral liquid | |
| CN217048961U (en) | Water quality environment detection device | |
| CN220982473U (en) | Deepwater water temperature thermometer for geological investigation | |
| CN212780067U (en) | Surface water detection pretreatment device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20210618 |
|
| WW01 | Invention patent application withdrawn after publication |