CN110954373A - Device capable of automatically collecting water samples in different rainfall periods - Google Patents
Device capable of automatically collecting water samples in different rainfall periods Download PDFInfo
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- CN110954373A CN110954373A CN201910371975.8A CN201910371975A CN110954373A CN 110954373 A CN110954373 A CN 110954373A CN 201910371975 A CN201910371975 A CN 201910371975A CN 110954373 A CN110954373 A CN 110954373A
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- collecting pipe
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- cover
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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
- G01N1/20—Devices for withdrawing samples in the liquid or fluent state for flowing or falling materials
Abstract
The invention discloses a device capable of automatically collecting water samples in different rainfall periods.A timing switch is arranged in a collecting tray, and a first collecting pipe and a second collecting pipe are inserted into a collecting pipe seat; the first collecting pipe and the second collecting pipe are identical in structure, the top of the first collecting pipe is hinged with a pipe cover, and the pipe cover inclines towards the inside of the first collecting pipe; the tube cover is provided with a spring at the hinged position; the tail end of the pipe cover is provided with an iron sheet, and the inner wall of the first collecting pipe is provided with an electromagnet; a storage battery is arranged in an interlayer at the bottom of the first collecting pipe; a floating block is arranged above the interlayer and can slide up and down through a limit slide rail; the inner wall of the first collecting pipe is additionally provided with a push switch; the first collecting pipe and the second collecting pipe are connected with the collecting pipe seat through a socket or a metal contact; the push switch is connected with the storage battery and the electromagnet in series; the device ensures that the rainwater collection process is more stable, and the collection pipe is more closed to prevent splashing; a timing switch is utilized to collect a rainwater sample from any time in a rainfall period; the first collecting pipe and the second collecting pipe can be independently used and taken at any time.
Description
Technical Field
The invention belongs to the field of atmospheric environment sampling monitoring, and particularly relates to a device capable of automatically collecting water samples in different rainfall periods.
Background
In the monitoring of the atmospheric quality, the monitoring of the concentration of pollutants in rainwater is an indispensable task, especially for the monitoring of early rainwater. The concentration of pollutants in the rainfall is gradually decreased along with the increase of the rainfall duration, and the pollutant concentrations in the same time period are often different due to different pollution conditions in various places, so that the rainwater samples in different rainfall periods need to be accurately collected according to local conditions for analysis.
The traditional collection method can only collect the average total water sample of a rain field at one time and cannot be accurate to each time interval. Especially, when rainfall is carried out for a long time, the rough estimation can cause great deviation of the change process or the height or the low of the real value of the large water body pollutant balance, thereby causing great difficulty in analyzing the distribution condition of the water body pollutant, accurately measuring and calculating the water body environment holding capacity and the like.
In the prior art, for example, patent 200710056667.3 entitled "rainfall dust settling time-sharing multifunctional full-automatic sampler" includes a rotating tray with several collecting cups, a collecting port is arranged on the rotating tray and above the rotating tray, and rainwater flows into the collecting cups from the collecting port; the rotation of the rotary tray is controlled by the controller, and the collection of rainwater at different time intervals is completed. The device uses more electronic circuit control modes and electronic components such as a rainwater sensing controller, a light couple sensor and the like. Due to the problems of the technical principle adopted by the component, the component is easily interfered by the outside during operation, is easy to damage after long-term use and has influence on precision. The collection cup lacks the sealing function after automatically collecting the rainwater, and the rainwater is spilled easily when the rotary tray rotates. The collection cup is difficult to take out alone and study, takes out a collection cup, must need open the box, will produce obvious influence to the rainwater collection of follow-up collection cup.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a device capable of automatically collecting water samples in different rainfall periods, which is realized by the following technology.
A device capable of automatically collecting water samples in different rainfall periods comprises a collecting disc, a first collecting pipe and a plurality of second collecting pipes, wherein a timing switch is arranged inside the collecting disc, and the first collecting pipe and the second collecting pipes are inserted into collecting pipe seats with the surfaces of the collecting disc sunken inwards;
the first collecting pipe is hollow and cylindrical, a semicircular pipe cover is hinged to the top of the first collecting pipe, and the pipe cover is obliquely arranged towards the inside of the first collecting pipe; the pipe cover is provided with a spring at the hinged position, and the elastic force of the spring enables the pipe cover to be obliquely abutted against the inner wall of the first collecting pipe; the tail end of the pipe cover is provided with an iron sheet, and the inner wall of the first collecting pipe is provided with an electromagnet; when the pipe cover is abutted, the iron sheet is just contacted with the electromagnet; an interlayer is arranged at the bottom in the first collecting pipe, and a storage battery is arranged in the interlayer; a floating block is arranged above the interlayer and can lift and slide relative to the inner wall of the first collecting pipe through a limiting slide rail; the floating block comprises a first support block arranged horizontally and a second support block vertically arranged on the first support block; a push switch is additionally arranged on the inner wall of the first collecting pipe, and the push switch is just positioned below the tail end of the pipe cover when the pipe cover is abutted; the first collecting pipe and the second collecting pipe are connected with the collecting pipe seat through a socket or a metal contact; the push switch, the storage battery and the electromagnet form a series circuit; the structure of the second collecting pipe is the same as that of the first collecting pipe;
when the first collecting pipe and the second collecting pipe are inserted into the collecting pipe seat, the timing switch is connected with the electromagnet of the first collecting pipe in parallel, and the timing switch is connected with the press switch of the second collecting pipe in parallel.
The technical principle and the using method of the device are as follows:
(1) the first collecting pipe and a plurality of second collecting pipes are inserted into the collecting pipe base, the timing switch is connected with the electromagnet of the first collecting pipe in parallel, and the timing switch is connected with the push switch of the second collecting pipe in parallel (according to the basic common knowledge of the circuit, namely, the push switch of the second collecting pipe is equal to the integral parallel connection of the storage battery and the electromagnet of the second collecting pipe). The push switches of the first collecting pipe and the second collecting pipe are in an off state in an initial state. At the moment, according to the design of the circuit, the electromagnet of the first collecting pipe is in an initial state of a non-working state; the storage battery, the electromagnet and the timing switch of the second collecting pipe are in a closed state, and the electromagnet is in a working state in an initial state. When the electromagnet works, the iron sheet at the tail end of the pipe cover is sucked by the electromagnet, so that the whole first collecting pipe or the whole second collecting pipe is in a sealed state, and external rainwater and other impurities cannot permeate into the inside; when the electromagnet does not work, the iron sheet at the tail end of the pipe cover is not attracted by the electromagnet, and the pipe cover and the electromagnet are abutted only by the spring at the hinged part.
The time when rainwater needs to be collected is preset in the counter (for example, the time when 30 th, 60 th, 90 th, 120 th min and the like start collecting after the beginning of rain is monitored can be set). After the device is arranged, the device is placed in an open place where rainfall needs to be collected to wait for rainfall.
(2) Because the pipe cover is obliquely arranged towards the inside of the first collecting pipe, a space capable of bearing a small amount of rainwater is surrounded by the upper part of the pipe cover and the pipe wall of the first collecting pipe. After the rainfall process begins, rain gradually accumulates in this space. Because the pipe cover of the first collecting pipe only depends on the spring at the hinged part to abut against the electromagnet, when the accumulated rainwater reaches a certain amount, the gravity action of the rainwater is greater than the elastic action of the spring at the hinged part, so that the pipe cover rotates downwards, a gap is generated between the pipe cover and the pipe wall, and the accumulated rainwater flows into the first collecting pipe along the gap.
(3) As the rainwater in the first collecting pipe increases, the liquid level rises, and the floating block in the first collecting pipe also gradually rises along with the liquid level.
(4) When the floating block rises to a certain height, the second branch block of the floating block is contacted with the pipe cover and jacks up the pipe cover, and when the pipe cover is jacked to be abutted against the inner wall of the first collecting pipe again, the first branch block of the floating block just presses the press switch on the inner wall of the first collecting pipe. At the moment, a parallel passage is formed among the electromagnet of the first collecting pipe, the storage battery, the press switch and the timing switch, and the current of the storage battery passes through the timing switch and the electromagnet simultaneously. The timing switch starts to keep timing after being acted by current.
(5) Taking the time interval for collecting rainwater as an example of 30min, when the timing switch counts time until 30min passes, the timing switch works for the storage battery and the electromagnet of any one second collecting pipe, so that the storage battery, the electromagnet and the timing switch of the second collecting pipe which are originally in a passage form an open circuit, the magnetic force between the electromagnet and the pipe cover of the second collecting pipe disappears, and only the abutting relation exists between the pipe cover and the pipe wall of the second collecting pipe. At this time, similarly to the process of step (2), the rainwater makes the tube cap of the second collecting tube rotate downward under the action of gravity to form a gap, and the accumulated rainwater will flow into the first collecting tube along the gap. And (4) similarly repeating the processes of the steps (3) and (4), wherein the second support block of the slider in the second collecting pipe jacks up the pipe cover again, and just presses the press switch on the inner wall of the second collecting pipe, so that the press switch, the storage battery and the electromagnet are directly communicated, and the electromagnet works to generate magnetic force to be attracted with the pipe cover again.
(6) And (3) along with the continuous and timely timing switch, the subsequent second collecting pipes finish the action process the same as the step (5), and from the first collecting pipe to each subsequent second collecting pipe, the collected rainwater is rainwater started from a certain fixed moment preset manually, so that the rainwater at different rainfall periods is collected.
In the device, all circuits are embedded in the interlayer of the first collecting pipe and the second collecting pipe, so that the device is waterproof. The used time switch can receive a current pulse signal to start timing, can also carry out access or short circuit control on a plurality of different circuits, and is a very common time switch, for example, a time switch with a timer and a microcomputer timing panel, which is brand of Thai, can realize the function (link https:// detail. tm. all. com/item. htm. The preset timing time can also adopt a plurality of moments with any different interval duration. The electromagnet is common in the market, such as XDA/34-18 type electromagnet, which can absorb 18KG object in air to the maximum extent and convert into 176.6 newtons; the used floating block can be made of wood, can also be made of plastic with a hollow structure, and can also be of a composite structure of other materials which can realize floating in water. Waterproof push switches are a form of push switch commonly sold on the market.
Preferably, the specific structure that the slider ascends and descends and slides relative to the inner wall of the first collection pipe through a limiting slide rail is as follows: the two opposite sides of the inner wall of the first collecting pipe are respectively and vertically provided with a limiting slide rail, and the floating block is positioned between the limiting slide rails on the two sides. The floating block is provided with the limiting slide rails on two sides, so that the floating process of the floating block is more stable, and the generated offset is minimum.
More preferably, the top of the second branch block is an inclined surface, and the inclined angle of the inclined surface is the same as the inclined angle when the pipe cover abuts against the inner wall of the first collecting pipe. The inclined plane is arranged to be matched with the inclined angle when the pipe cover is abutted, so that the abutting effect is better.
More preferably, the lower surface of the pipe cover is provided with a limiting block, and the lower surface of the limiting block is matched with the upper surface of the second supporting block. The effect of stopper is also in order to make the butt effect better.
More preferably, the tube walls of the first collecting tube and the second collecting tube are provided with drain holes, the drain holes are located above the electromagnets, and the drain holes are covered with openable sliding covers. The purpose of the drain holes is that when collection is completed, part of water may still accumulate in the head space of the first and second collection pipes, and this excess water may affect the water samples in the first and second collection pipes. Before taking out water samples in the first collecting pipe and the second collecting pipe, an operator can open the drain holes to drain accumulated redundant rainwater.
More preferably, a handle is arranged above the collecting tray.
Compared with the prior art, the invention has the advantages that:
1. compared with the prior art, the rainwater sample collecting device has the advantages that the whole rainwater collecting process is more stable, the collecting pipe is more closed, and water samples are prevented from splashing;
2. the device can collect the rainwater sample at any time in the rainfall period by using the timing switch, and has wider application range and more flexible use mode compared with the mode of only continuous collection;
3. the first collecting pipe and the second collecting pipe which collect the rainwater can be independently taken at any time.
Drawings
FIG. 1 is a schematic view of the general structure of the device for automatically collecting water samples in different rainfall periods according to embodiment 1;
FIG. 2 is a cross-sectional view of the first collecting pipe or the second collecting pipe and the collecting pipe seat of the device for automatically collecting water samples in different rainfall periods according to the embodiment 1;
FIG. 3 is a cross-sectional view at A-A of the first collecting pipe or the second collecting pipe of the device for automatically collecting water samples in different rainfall periods according to the embodiment 1;
fig. 4 is a schematic partial structural diagram of the device for automatically collecting water samples in different rainfall periods in the embodiment 1, wherein the floating block is in contact with the pipe cover.
FIG. 5 is a schematic circuit diagram of the apparatus for automatically collecting water samples during different rainfall periods according to embodiment 1;
FIG. 6 is a cross-sectional view at A-A of the first collecting pipe or the second collecting pipe of the device for automatically collecting water samples in different rainfall periods according to the embodiment 2;
FIG. 7 is a schematic view of a partial structure of the device for automatically collecting water samples in different rainfall periods in which the slider contacts the cover;
FIG. 8 is a schematic view of the partial structure of the device for automatically collecting water samples in different rainfall periods in embodiment 3 when the floating block contacts the cover
The numbers in the figures are as follows:
1. a collection tray; 2. a first collection tube; 3. a second collection tube; 4. a time switch; 5. a collecting tube base; 6. a tube cover; 7. iron sheets; 8. an electromagnet; 9. a storage battery; 10. a slider; 11. a limiting slide rail; 12. a first support block; 13. a second branch block; 14. a push switch; 15. a metal contact; 16. a limiting block; 17. a drain hole; 18. a slide cover.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. 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.
Example 1
As shown in fig. 1 to 5, the device capable of automatically collecting water samples in different rainfall periods provided by this embodiment includes a collecting tray 1, a first collecting pipe 2, and 5 second collecting pipes 3 (two rows), wherein a time switch 4 is disposed inside the collecting tray 1, and the first collecting pipe 2 and the second collecting pipe 3 are inserted into a collecting pipe seat 5 recessed inward on the surface of the collecting tray 1;
the first collecting pipe 2 is hollow and cylindrical, a semicircular pipe cover 6 is hinged to the top of the first collecting pipe 2, and the pipe cover 6 is obliquely arranged towards the inside of the first collecting pipe 2; a spring is arranged at the hinged position of the tube cover 6, and the elastic force of the spring enables the tube cover 6 to be obliquely abutted against the inner wall of the first collecting tube 2; the tail end of the pipe cover 6 is provided with an iron sheet 7, and the inner wall of the first collecting pipe 2 is provided with an electromagnet 8; when the tube cover 6 is abutted, the iron sheet 7 is just contacted with the electromagnet 8; an interlayer is arranged at the bottom in the first collecting pipe 2, and a storage battery 9 is arranged in the interlayer; a floating block 10 is arranged above the interlayer, and the floating block 10 can lift and slide relative to the inner wall of the first collecting pipe 2 through a limiting slide rail 11; the slider 10 comprises a first support block 12 arranged horizontally and a second support block 13 arranged vertically on the first support block 12; a push switch 14 is additionally arranged on the inner wall of the first collecting pipe 2, and when the pipe cover 6 is abutted, the push switch 14 is just positioned below the tail end of the pipe cover 6; the first collecting pipe 2 and the second collecting pipe 3 are both connected with the collecting pipe seat 5 through a metal contact 15; the push switch 14, the storage battery 9 and the electromagnet 8 form a series circuit; the second collecting pipe 3 has the same structure as the first collecting pipe 2;
when the first collecting pipe 2 and the second collecting pipe 3 are inserted into the collecting pipe seat 5, the timing switch 4 is connected with the electromagnet 8 of the first collecting pipe 2 in parallel, and the timing switch 4 is connected with the push switch 14 of the second collecting pipe 3 in parallel.
The technical principle and the using method of the device are as follows:
(1) the first collecting pipe and a plurality of second collecting pipes are inserted into the collecting pipe base, the timing switch is connected with the electromagnet of the first collecting pipe in parallel, and the timing switch is connected with the push switch of the second collecting pipe in parallel (according to the basic common knowledge of the circuit, namely, the push switch of the second collecting pipe is equal to the integral parallel connection of the storage battery and the electromagnet of the second collecting pipe). The push switches of the first collecting pipe and the second collecting pipe are in an off state in an initial state. At the moment, according to the design of the circuit, the electromagnet of the first collecting pipe is in an initial state of a non-working state; the storage battery, the electromagnet and the timing switch of the second collecting pipe are in a closed state, and the electromagnet is in a working state in an initial state. When the electromagnet works, the iron sheet at the tail end of the pipe cover is sucked by the electromagnet, so that the whole first collecting pipe or the whole second collecting pipe is in a sealed state, and external rainwater and other impurities cannot permeate into the inside; when the electromagnet does not work, the iron sheet at the tail end of the pipe cover is not attracted by the electromagnet, and the pipe cover and the electromagnet are abutted only by the spring at the hinged part.
The time when rainwater needs to be collected is preset in the counter (for example, the time when 30 th, 60 th, 90 th, 120 th min and the like start collecting after the beginning of rain is monitored can be set). After the device is arranged, the device is placed in an open place where rainfall needs to be collected to wait for rainfall.
(2) Because the pipe cover is obliquely arranged towards the inside of the first collecting pipe, a space capable of bearing a small amount of rainwater is surrounded by the upper part of the pipe cover and the pipe wall of the first collecting pipe. After the rainfall process begins, rain gradually accumulates in this space. Because the pipe cover of the first collecting pipe only depends on the spring at the hinged part to abut against the electromagnet, when the accumulated rainwater reaches a certain amount, the gravity action of the rainwater is greater than the elastic action of the spring at the hinged part, so that the pipe cover rotates downwards, a gap is generated between the pipe cover and the pipe wall, and the accumulated rainwater flows into the first collecting pipe along the gap.
(3) As the rainwater in the first collecting pipe increases, the liquid level rises, and the floating block in the first collecting pipe also gradually rises along with the liquid level.
(4) When the floating block rises to a certain height, the second branch block of the floating block is contacted with the pipe cover and jacks up the pipe cover, and when the pipe cover is jacked up again to be propped against the inner wall of the first collecting pipe again, the first branch block of the floating block just presses the press switch on the inner wall of the first collecting pipe. At the moment, a parallel passage is formed among the electromagnet of the first collecting pipe, the storage battery, the press switch and the timing switch, and the current of the storage battery passes through the timing switch and the electromagnet simultaneously. The timing switch starts to keep timing after being acted by current.
(5) Taking the time interval for collecting rainwater as an example of 30min, when the timing switch counts time until 30min passes, the timing switch works for the storage battery and the electromagnet of any one second collecting pipe, so that the storage battery, the electromagnet and the timing switch of the second collecting pipe which are originally in a passage form an open circuit, the magnetic force between the electromagnet and the pipe cover of the second collecting pipe disappears, and only the abutting relation exists between the pipe cover and the pipe wall of the second collecting pipe. At this time, similarly to the process of step (2), the rainwater makes the tube cap of the second collecting tube rotate downward under the action of gravity to form a gap, and the accumulated rainwater will flow into the first collecting tube along the gap. And (4) similarly repeating the processes of the steps (3) and (4), wherein the second support block of the slider in the second collecting pipe jacks up the pipe cover again, and just presses the press switch on the inner wall of the second collecting pipe, so that the press switch, the storage battery and the electromagnet are directly communicated, and the electromagnet works to generate magnetic force to be attracted with the pipe cover again.
(6) And (3) along with the continuous and timely timing switch, the subsequent second collecting pipes finish the action process the same as the step (5), and from the first collecting pipe to each subsequent second collecting pipe, the collected rainwater is rainwater started from a certain fixed moment preset manually, so that the rainwater at different rainfall periods is collected.
In the device, all circuits are embedded in the interlayer of the first collecting pipe and the second collecting pipe, so that the device is waterproof. The time switch used is a time switch with a timer and a microcomputer timing panel (purchasing link https:// detail. tm. all. com/item. htm. The preset timing time can also adopt a plurality of moments with any different interval duration. The used electromagnet can be selected from common electromagnets on the market, and the used floating block can be made of wood, plastic with a hollow structure or other composite structures which can realize floating multiple materials in water.
Example 2
As shown in fig. 6 and 7, the device capable of automatically collecting water samples in different rainfall periods provided in this embodiment is further optimized on the basis of the device of embodiment 1:
1. the two opposite sides of the inner wall of the first collecting pipe 2 are respectively vertically provided with a limiting slide rail 11, and the floating block 10 is positioned between the limiting slide rails 11 on the two sides. The structure mode that the limiting slide rails 11 are arranged on the two sides of the floating block 10 can enable the floating process of the floating block 10 to be more stable, and the generated offset is minimum;
2. the top of the second supporting block 13 is an inclined plane, and the inclined angle of the inclined plane is the same as the inclined angle of the pipe cover 6 when the pipe cover abuts against the inner wall of the first collecting pipe 2. The inclined plane is arranged to be matched with the inclined angle when the pipe cover is abutted, so that the abutting effect is better.
Example 3
As shown in fig. 8, the device capable of automatically collecting water samples in different rainfall periods provided in this embodiment is further optimized on the basis of the device of embodiment 1:
1. the lower surface of the pipe cover 6 is provided with a limiting block 16, and the lower surface of the limiting block 16 is matched with the upper surface of the second supporting block 13. The effect of stopper is also in order to make the butt effect better.
2. The pipe walls of the first collecting pipe 2 and the second collecting pipe 3 are provided with drain holes 17, the drain holes 17 are positioned above the electromagnets 8, and the drain holes 17 are covered with openable sliding covers 18. The purpose of the drain holes is that when collection is completed, part of water may still accumulate in the head space of the first and second collection pipes, and this excess water may affect the water samples in the first and second collection pipes. Before taking out water samples in the first collecting pipe and the second collecting pipe, an operator can open the drain holes to drain accumulated redundant rainwater.
Claims (6)
1. The device capable of automatically collecting water samples in different rainfall periods is characterized by comprising a collecting disc, a first collecting pipe and a plurality of second collecting pipes, wherein a timing switch is arranged in the collecting disc, and the first collecting pipe and the second collecting pipes are inserted into collecting pipe seats with the surfaces of the collecting disc sunken inwards;
the first collecting pipe is hollow and cylindrical, a semicircular pipe cover is hinged to the top of the first collecting pipe, and the pipe cover is obliquely arranged towards the inside of the first collecting pipe; the pipe cover is provided with a spring at the hinged position, and the elastic force of the spring enables the pipe cover to be obliquely abutted against the inner wall of the first collecting pipe; the tail end of the pipe cover is provided with an iron sheet, and the inner wall of the first collecting pipe is provided with an electromagnet; when the pipe cover is abutted, the iron sheet is just contacted with the electromagnet; an interlayer is arranged at the bottom in the first collecting pipe, and a storage battery is arranged in the interlayer; a floating block is arranged above the interlayer and can lift and slide relative to the inner wall of the first collecting pipe through a limiting slide rail; the floating block comprises a first support block arranged horizontally and a second support block vertically arranged on the first support block; a push switch is additionally arranged on the inner wall of the first collecting pipe, and the push switch is just positioned below the tail end of the pipe cover when the pipe cover is abutted; the first collecting pipe and the second collecting pipe are connected with the collecting pipe seat through a socket or a metal contact; the push switch, the storage battery and the electromagnet form a series circuit; the structure of the second collecting pipe is the same as that of the first collecting pipe;
when the first collecting pipe and the second collecting pipe are inserted into the collecting pipe seat, the timing switch is connected with the electromagnet of the first collecting pipe in parallel, and the timing switch is connected with the press switch of the second collecting pipe in parallel.
2. The device capable of automatically collecting water samples in different rainfall periods according to claim 1, wherein the specific structure that the floating block can slide up and down relative to the inner wall of the first collecting pipe through a limiting slide rail is as follows: the two opposite sides of the inner wall of the first collecting pipe are respectively and vertically provided with a limiting slide rail, and the floating block is positioned between the limiting slide rails on the two sides.
3. The device for automatically collecting water samples in different rainfall periods as claimed in claim 1 or 2, wherein the top of the second support block is an inclined plane, and the inclined plane has the same inclination angle as the pipe cover abuts against the inner wall of the first collecting pipe.
4. The device capable of automatically collecting water samples in different rainfall periods as claimed in claim 1 or 2, wherein a limiting block is arranged on the lower surface of the pipe cover, and the lower surface of the limiting block is matched with the upper surface of the second branch block.
5. The device capable of automatically collecting water samples in different rainfall periods as claimed in claim 1 or 2, wherein the pipe walls of the first collecting pipe and the second collecting pipe are provided with drain holes, the drain holes are located above the electromagnets, and the drain holes are covered with openable sliding covers.
6. The device for automatically collecting water samples in different rainfall periods as claimed in claim 1 or 2, wherein a handle is arranged above the collecting tray.
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Cited By (4)
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| CN111678740A (en) * | 2020-06-10 | 2020-09-18 | 河海大学 | Device capable of automatically collecting atmospheric sedimentation samples at different time intervals |
| CN112129588A (en) * | 2020-09-28 | 2020-12-25 | 内蒙古工业大学 | Precipitation collecting bottle under high-altitude environment and clamping platform thereof |
| CN112179725A (en) * | 2020-08-25 | 2021-01-05 | 河海大学 | Rainfall time-sharing collection device |
| CN113607464A (en) * | 2021-07-06 | 2021-11-05 | 长江大学 | Sampler for underwater sediments in river and lake system |
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| CN113607464A (en) * | 2021-07-06 | 2021-11-05 | 长江大学 | Sampler for underwater sediments in river and lake system |
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