CN119064074B - Water sample collection device and water sample collection method - Google Patents
Water sample collection device and water sample collection method Download PDFInfo
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- CN119064074B CN119064074B CN202411580287.XA CN202411580287A CN119064074B CN 119064074 B CN119064074 B CN 119064074B CN 202411580287 A CN202411580287 A CN 202411580287A CN 119064074 B CN119064074 B CN 119064074B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 161
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000007789 sealing Methods 0.000 claims abstract description 42
- 238000005070 sampling Methods 0.000 claims abstract description 24
- 230000000694 effects Effects 0.000 claims description 11
- 230000000149 penetrating effect Effects 0.000 claims description 7
- 230000005484 gravity Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 4
- 238000012546 transfer Methods 0.000 abstract description 2
- 238000003825 pressing Methods 0.000 description 7
- 241000196324 Embryophyta Species 0.000 description 4
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 2
- 235000012206 bottled water Nutrition 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000003891 environmental analysis Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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
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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
本发明提供了一种水样采集装置及采集方法，属于水样采集技术领域。本发明包括上座板、下座板和采集瓶，所述上座板上开设有第一通孔，位于第一通孔上方的上座板上活动设有上封板，所述上座板和下座板之间连接有若干个连接柱，所述下座板的外侧设有配重环，所述采集瓶的底部开设有进水孔，位于进水孔上方的采集瓶内活动设置有下封板，所述下座板上设有进水结构，所述进水结构能够将外部的水引进采集瓶的进水孔内，同时能够将采集瓶固定住。本发明能够快速拆装和固定采集瓶，方便更换，提高取样效率，同时避免水样在转移过程中产生的扰动提高后续检测的准确性。
The present invention provides a water sample collection device and a collection method, and belongs to the technical field of water sample collection. The present invention includes an upper seat plate, a lower seat plate and a collection bottle, wherein a first through hole is provided on the upper seat plate, an upper sealing plate is movably provided on the upper seat plate above the first through hole, a plurality of connecting columns are connected between the upper seat plate and the lower seat plate, a counterweight ring is provided on the outer side of the lower seat plate, a water inlet hole is provided on the bottom of the collection bottle, a lower sealing plate is movably provided in the collection bottle above the water inlet hole, and a water inlet structure is provided on the lower seat plate, and the water inlet structure can introduce external water into the water inlet hole of the collection bottle and fix the collection bottle at the same time. The present invention can quickly disassemble and fix the collection bottle, facilitate replacement, improve sampling efficiency, and at the same time avoid disturbances caused by water samples during transfer to improve the accuracy of subsequent detection.
Description
Technical Field
The invention belongs to the technical field of water sample collection, and relates to a water sample collection device and a water sample collection method.
Background
The water sample collection is an indispensable important link in environmental analysis and monitoring and river, lake and sea investigation. The choice of water sampler and its performance directly affect the representativeness, effectiveness and accuracy of the collected water sample. According to the technical characteristics of the water sampler, the water sampler in the current market can be roughly divided into two main categories, namely a precise water sampler and a simple water sampler, in terms of application range, water collection precision, operation method and the like.
Precision water samplers generally have higher sampling precision and are suitable for research occasions requiring highly accurate data, but such devices tend to be large in size and high in cost, so that the application range is relatively limited. In contrast, the simple water sampler is widely applied to daily water sample collection work in rivers, lakes and shallow sea areas due to the economical and practical characteristics. The simple water sampler usually adopts organic glass as a main material, is convenient for observing the internal condition, has light weight and is suitable for field operation.
However, the existing simple water sampler also exposes some disadvantages during use. For example, the traditional sampling mode is that after the water sample is collected, the water sample is guided into a water sample bottle through a conduit at the lower part of the device. The operation mode is long in time consumption, reduces the working efficiency, and can be different from the state of the final bottled water sample in initial collection due to the position design of the guide pipe, disturbance of the water sample in the transfer process and inconsistency of water quantity control during bottling, so that the representativeness of the sample and the accuracy of a detection result are affected.
Disclosure of Invention
The invention aims at solving the problems in the prior art, and provides a water sample collecting device and a water sample collecting method, which can be used for quickly disassembling and fixing a collecting bottle, are convenient to replace, improve the sampling efficiency, and simultaneously avoid disturbance generated in the transferring process of a water sample and improve the accuracy of subsequent detection.
The aim of the invention can be achieved by the following technical scheme:
The utility model provides a water sample collection system, includes bedplate, lower bedplate and acquisition bottle, first through-hole has been seted up on the bedplate, the upside of bedplate is equipped with the portal, be equipped with rings on the portal, the activity is equipped with the shrouding on the bedplate that is located first through-hole top, the downside of bedplate is equipped with a plurality of spliced pole, the bedplate links firmly on the spliced pole down, the downside of bedplate is equipped with a plurality of supporting leg along the circumference down, the outside of bedplate is equipped with the counter weight ring down, the acquisition bottle is big-end-up's cylindric, the inlet opening has been seted up to the bottom of acquisition bottle, the top of acquisition bottle is equipped with the delivery port, and the acquisition bottle internal activity that is located the inlet opening top is provided with down the shrouding, the acquisition bottle is placed between bedplate and lower bedplate, is equipped with inlet structure down on the bedplate, inlet structure can be with outside water introduction acquisition bottle's inlet opening in the while can fix the acquisition bottle.
The collecting bottle is directly designed into the shape of a water sample bottle, so that the collecting bottle is convenient to take and place subsequently, the up-and-down movement of the upper sealing plate and the lower sealing plate is realized by utilizing the impact of water flow when the collecting device moves up and down in water, and the water outlet and the water inlet of the collecting bottle are opened and closed.
Preferably, a check ring is arranged in the first through hole, and an annular rubber pad is arranged on the lower side surface of the check ring. After the water outlet of the collection bottle enters the first through hole, the check ring can limit the height of the collection bottle, and meanwhile, the annular rubber pad plays a certain sealing role.
Preferably, the water inlet structure comprises an internal thread hole and a thread block, a first groove is formed in the upper side surface of the lower seat plate, the internal thread hole is formed in the bottom of the first groove in a penetrating mode, the thread block is connected with the internal thread hole in a threaded mode, a second through hole is formed in the thread block in a penetrating mode, a plugging block is arranged on the upper end face of the thread block in a rotating mode, a third through hole is formed in the plugging block in a penetrating mode, and the second through hole and the third through hole are opposite to each other vertically. The upper and lower heights of the plugging block are adjusted by utilizing the rotation of the threaded block, and the operation is simple.
Preferably, the lower end face of the thread block is provided with a circular plate, a filter screen is fixedly arranged in a central hole of the circular plate, and a plurality of operation plates are radially arranged on the lower side face of the circular plate. The sampler is through holding between the hands the operation panel, rotates the screw thread piece easily, and the filter screen can effectively block pasture and water and aquatic creature and enter into in the acquisition bottle simultaneously.
Preferably, the spliced pole has two and sets up relatively, and articulated respectively on one spliced pole have first circular arc board and second circular arc board, first circular arc board and second circular arc board rotate in opposite directions and form an annular space that can wrap up the acquisition bottle, the outside limit of first circular arc board and second circular arc board can be dismantled and fix on another spliced pole, one side that first circular arc board and second circular arc board are close to the acquisition bottle all is equipped with first rubber pad, utilizes first circular arc board and second circular arc board to wrap up the whole side of acquisition bottle in, and two first rubber pads play fastening effect simultaneously, avoid acquisition bottle landing.
Preferably, be equipped with the limit cap on the last bedplate that is located first through-hole top, go up the shrouding and go up the activity setting about in the limit cap, be equipped with a plurality of spacing hook along the circumference of inlet opening in the acquisition bottle, a plurality of spacing hook forms a columniform activity space, the activity sets up from top to bottom in columniform activity space down, plays spacing guide effect to last shrouding through the limit cap, and a plurality of spacing hook plays spacing guide effect to lower shrouding.
Preferably, a plurality of the connecting columns are horizontally and fixedly provided with a pressing plate, a fourth through hole is formed in the pressing plate, and the upper seat plate is detachably arranged on the pressing plate. The upper seat board is detachably connected to the upper end of the connecting column, so that the collection bottle can be conveniently placed in and taken from the top vertically, and water samples do not need to be worried about splashing.
Preferably, a fixing rod is fixedly connected between the upper sealing plate and the lower sealing plate, and the lower sealing plate can freely enter and exit the water outlet. The upper sealing plate and the lower sealing plate are connected together through the fixing rod, so that the upper sealing plate and the lower sealing plate are linked up and down, the acquisition bottle is synchronously opened or closed, and the bottle collecting device is stable and reliable.
Preferably, a rotating shaft is horizontally arranged between two opposite supporting legs in a rotating mode, and a plurality of rotating blades are circumferentially arranged on the rotating shaft right below the circular plate. When the water flow impacts the rotating blade plate on the rotating shaft to rotate, aquatic weeds and aquatic organisms can be effectively prevented from entering the collecting bottle through the water inlet hole.
The water sample collecting method includes the following steps:
s1, opening a first arc plate and a second arc plate, vertically placing a collection bottle between an upper seat plate and a lower seat plate, enabling the bottom of the collection bottle to be positioned in a first groove, and enabling a water outlet of the collection bottle to be opposite to a first through hole of the upper seat plate;
S2, the annular plate and the threaded block are rotated upwards through the operation plate, after the plugging block contacts the bottom of the collection bottle, the collection bottle is continuously rotated upwards to be pushed to move upwards, a water outlet of the collection bottle enters into a first through hole of the upper seat plate, and when the water outlet contacts and presses an annular rubber pad of the check ring, the collection bottle is fixed;
S3, closing the first arc plate and the second arc plate in opposite directions, fixing the outer side of the acquisition bottle by using two first rubber pads, and binding additional counterweights on the lower seat plate if necessary;
s4, taking the collecting device to a designated water area, installing a lifting rope and a lifting hook on a lifting ring, then lowering the collecting device, vertically downwards moving the collecting device under the action of self gravity of the collecting device, a counterweight ring or an additional counterweight, enabling a lower sealing plate at the bottom of the collecting bottle to receive water flow impact to upwards move, opening a water inlet hole, enabling water to enter the collecting bottle from the water inlet hole, then continuing to upwards flow to impact an upper sealing plate of an upper seat plate, enabling the upper sealing plate to upwards open a first through hole, and enabling water bodies inside and outside the collecting bottle to be mutually communicated;
s5, when the collection bottle moves to a preset water depth, the water sample at the current water level is collected in the collection bottle, then the lifting rope is pulled upwards, the collection device moves upwards, the upper sealing plate moves downwards to seal the first through hole under the impact of the water flow, and the lower sealing plate moves downwards to seal the water inlet hole, so that the water sample collected by the collection bottle can be completely brought out of the water surface;
s6, opening the first arc plate and the second arc plate, rotating the threaded block downwards, taking out the acquisition bottle, replacing a new acquisition bottle, and continuing to sample, so that the trouble of transferring a water sample is avoided.
Compared with the prior art, the invention has the following advantages:
1. The collecting bottle can be detached for use, when sampling at different points is needed, a plurality of collecting bottles can be prepared, continuous sampling is realized, a great amount of time is saved for guiding a water sample from the water collector to the water sample bottle, and the sampling efficiency is greatly improved;
2. Because the representativeness of the water sample is critical, in the process of guiding the water sample from the water collector to the water sample bottle, obvious differences can occur between the finally bottled water sample and the initially collected water sample due to precipitation and oxidation of substances in the water, water sample disturbance, size and position setting of a diversion channel and the like. Therefore, the application proposes to directly use the acquisition bottle as a water sample bottle, and omits the step of guiding the water sample in the middle, thereby enhancing the representativeness of the sample and the accuracy of the subsequent detection result;
3. The collecting bottle is placed in the first groove, then the screw thread block is rotated upwards to push the collecting bottle to move upwards, the water outlet enters the first through hole and is extruded with the annular rubber pad on the baffle ring, at the moment, the cup at the upper end and the lower end of the collecting bottle are fixed, then the side edge of the collecting bottle is fixed by the first arc plate and the second arc plate, so that the collecting bottle cannot deviate, and the sampling stability is improved;
4. The bottom of the lower seat board is provided with the rotating shaft and the rotating blade, when the collecting device is lowered, the impact of water flow is received, the rotating shaft and the rotating blade rotate, water plants and aquatic organisms are prevented from entering the collecting bottle through the water inlet, and the smooth sampling work is ensured.
Drawings
FIG. 1 is a schematic view of a first embodiment of the present invention;
FIG. 2 is a cross-sectional view at A-A in FIG. 1;
FIG. 3 is a cross-sectional view at B-B in FIG. 1;
FIG. 4 is an enlarged view of a portion of FIG. 1 at C;
FIG. 5 is a partial enlarged view at D in FIG. 1;
FIG. 6 is an enlarged view of a portion of FIG. 3 at E;
Fig. 7 is a schematic structural view of a second embodiment;
FIG. 8 is a cross-sectional view taken at F-F in FIG. 7;
Fig. 9 is a schematic structural view of a third embodiment;
FIG. 10 is a cross-sectional view at G-G of FIG. 9;
FIG. 11 is a schematic view of a collection bottle;
Fig. 12 is a schematic view of another form of the collection bottle.
In the drawing, 1, an upper seat plate, 11, a first through hole, 111, a retainer ring, 12, an upper sealing plate, 13, a portal, 131, a lifting ring, 14, a limiting cover, 15, a locking plate, 151, a top notch groove, 2, a lower seat plate, 21, a first groove, 22, an internal threaded hole, 23, a supporting leg, 231, L-shaped supporting legs, 232, a buffer spring, 3, a threaded block, 31, a second through hole, 32, a sealing block, 321, a third through hole, 33, a circular ring plate, 331, a filter screen, 332, an operating plate, 4, a collecting bottle, 41, a convex edge, 42, a water inlet hole, 43, a water outlet, 44, a lower sealing plate, 45, a limiting hook, 46, a fixing rod, 47, a threaded tube head, 48, an upper rotary cover, 49, a lower rotary cover, 5, a connecting column, 51, a first circular arc plate, 511, a first notch groove, 52, a second circular arc plate, 521, a second notch groove, 53, a hinge sleeve, 54, a first bolt, 55, a first butterfly nut, 56, a first butterfly nut, 57, a second butterfly nut, 6, 61, a rotary blade 7, a rotary shaft, a rotary disc, a counterweight, a bottom, a rotary disc, a nut, a bottom groove, and 81.
Detailed Description
The following are specific embodiments of the present invention and the technical solutions of the present invention will be further described with reference to the accompanying drawings, but the present invention is not limited to these embodiments.
In a first embodiment, as shown in fig. 1 to 6, a water sample collection device includes an upper seat board 1, a lower seat board 2, a collection bottle 4 and a water inlet structure.
The upper seat plate 1 is provided with a first through hole 11, the upper side surface of the upper seat plate 1 is provided with a C-shaped door frame 13, the top of the door frame 13 is provided with a hanging ring 131, the upper seat plate 1 above the first through hole 11 is provided with a limiting cover 14, an upper sealing plate 12 is movably arranged in the limiting cover 14 up and down, the first through hole 11 is internally provided with a check ring 111, and the lower side surface of the check ring 111 is provided with an annular rubber pad.
The lower side of the upper seat board 1 is provided with a plurality of connecting columns 5, the lower seat board 2 is fixedly connected to the connecting columns 5, the lower side of the lower seat board 2 is provided with a plurality of supporting legs 23 along the circumferential direction, preferably, the bottoms of the supporting legs 23 are spherical, and the outer side of the lower seat board 2 is provided with a counterweight ring 9.
As shown in fig. 11, the collecting bottle 4 is in a cylindrical shape with a small top and a large bottom, the top of the collecting bottle 4 is provided with a water outlet 43, a convex edge 41 is arranged below the water outlet 43 of the collecting bottle 4, an external thread is arranged outside the collecting bottle 4 above the convex edge 41, an upper screw cap 48 is connected to the upper end of the collecting bottle 4 in a threaded manner, a water inlet 42 is formed in the bottom of the collecting bottle 4, a plurality of limiting hooks 45 are arranged in the collecting bottle 4 along the circumferential direction of the water inlet 42, the limiting hooks 45 are 7-shaped, a plurality of limiting hooks 45 form a cylindrical movable space, a lower sealing plate 44 is movably arranged in the cylindrical movable space up and down, the collecting bottle 4 is placed between the upper seat plate 1 and the lower seat plate 2, a plurality of feet 8 are arranged around the bottom of the collecting bottle 4 below the collecting bottle 4, a screw cap 47 is arranged on the bottom of the collecting bottle 4 below the water inlet 42, a lower screw cap 49 is connected to the screw cap 47, and a plurality of feet 8 are arranged around the bottom of the collecting bottle 4.
Preferably, the bottom intermediate position of the collection bottle 4 may be designed to be concave, as shown in fig. 12, and the bottom of the collection bottle 4 is provided with a bottom groove 81, so that neither the lower screw cap 49 nor the screw cap 47 affect the vertical placement of the collection bottle 4.
The water inlet structure is arranged on the lower seat board 2, and can introduce external water into the water inlet hole 42 of the acquisition bottle 4 and fix the acquisition bottle 4.
The collecting bottle 4 can be detached for use, when sampling at different points is needed, a plurality of collecting bottles 4 can be prepared for continuous sampling, sampling efficiency is greatly improved, meanwhile, when sampling is carried out, the collecting bottle can be firmly fixed and is not influenced by impact of water flow in sinking and floating, loss of the collecting bottle is avoided, and after sampling is finished, the collecting bottle is sealed by the upper rotating cover and the lower rotating cover, so that water sample is prevented from flowing out.
In this embodiment, the water intake structure includes an internally threaded bore 22 and a threaded block 3.
The upper side surface of the lower seat board 2 is provided with a first groove 21, and the internal threaded hole 22 is formed at the bottom of the first groove 21 in a penetrating manner.
The thread block 3 is in threaded connection with the internal thread hole 22, a second through hole 31 is formed in the thread block 3 in a penetrating mode, a blocking block 32 is arranged on the upper end face of the thread block 3 in a rotating mode, a third through hole 321 is formed in the blocking block 32 in a penetrating mode, and the second through hole 31 and the third through hole 321 are opposite to each other vertically.
The collection bottle 4 is placed in the first groove 21, then the threaded block 3 is rotated upwards, the collection bottle 4 is pushed to move upwards, the water outlet 43 enters the first through hole 11 and is extruded with the annular rubber pad on the check ring 111, the upper end and the lower end of the collection bottle 4 are fixed at the moment, the sampling stability is improved, and when the collection bottle 4 needs to be replaced, the collection bottle 4 is taken out only by rotating the threaded block 3 downwards, so that the operation is simple.
Preferably, the lower end surface of the screw thread block 3 is provided with a circular plate 33, a filter screen 331 is fixedly arranged in a central hole of the circular plate 33, a plurality of operation plates 332 are radially arranged on the lower side surface of the circular plate 33, the operation plates 332 are vertically arranged on the circular plate 33, a sampling person can pinch the operation plates 332 conveniently, the screw thread block 3 is rotated, meanwhile, the filter screen 331 is arranged on the circular plate 33, water plants and aquatic organisms can be effectively prevented from entering the collecting bottle 4, a good filtering effect is achieved, and the filter screen 331 can be washed after the screw thread block 3 is detached, so that the structure is simple.
In this embodiment, two connecting columns 5 are oppositely arranged, wherein a first arc plate 51 and a second arc plate 52 are hinged on one connecting column 5 through a hinged sleeve 53 respectively, the first arc plate 51 and the second arc plate 52 rotate in opposite directions to form an annular space capable of wrapping the collection bottle 4, a first notch groove 511 is formed in the outer side of the first arc plate 51, a second notch groove 521 is formed in the outer side of the second arc plate 52, a first bolt 54 is horizontally fixed on the other connecting column 5, a first butterfly nut 55 is connected to the first stud 54 in a threaded manner, and when the first arc plate 51 and the second arc plate 52 rotate in opposite directions, the first notch groove 511 and the second notch groove 521 are relatively inserted into the first bolt 54, and then the first butterfly nut 55 rotates downwards to press the first arc plate 51 and the second arc plate 52 on the connecting column 5. Preferably, the sides of the first circular arc plate 51 and the second circular arc plate 52, which are close to the collection bottle 4, are respectively provided with a first rubber pad 56, and when the collection bottle 4 is enclosed by the first circular arc plate 51 and the second circular arc plate 52, the sides of the collection bottle 4 can be wrapped by the two first rubber pads 56, so that the offset of the sides is avoided.
The collection method adopting the water sample collection device comprises the following steps:
s1, opening a first arc plate 51 and a second arc plate 52, vertically placing a collection bottle 4 between an upper seat plate 1 and a lower seat plate 2, enabling the bottom of the collection bottle 4 to be positioned in a first groove 21, and enabling a water outlet 43 of the collection bottle 4 to be opposite to a first through hole 11 of the upper seat plate 1;
S2, the annular plate 33 and the threaded block 3 are rotated upwards through the operation plate 332, after the plugging block 32 contacts the bottom of the collection bottle 4, the collection bottle 4 is continuously rotated upwards, the collection bottle 4 is pushed to move upwards, the water outlet 43 of the collection bottle 4 enters the first through hole 11 of the upper seat plate 1, and when the water outlet 43 contacts and presses the annular rubber pad of the retainer ring 111, the collection bottle 4 is fixed;
S3, closing the first arc plate 51 and the second arc plate 52 in opposite directions, fixing the outer side of the acquisition bottle 4 by using two first rubber pads 56, and binding additional counterweights on the lower seat plate 2 if necessary;
S4, taking the collecting device to a designated water area, installing a lifting rope and a lifting hook on a lifting ring 131, then lowering the collecting device, vertically moving downwards under the action of the gravity of the collecting device, a counterweight ring 9 or an additional counterweight, enabling a lower sealing plate 44 at the bottom of the collecting bottle 4 to receive water flow impact to move upwards, opening a water inlet hole 42, enabling water to enter the collecting bottle 4 from the water inlet hole 42, then continuing to flow upwards to impact an upper sealing plate 12 of the upper seat plate 1, enabling the upper sealing plate 12 to upwards, and opening a first through hole 11 to enable water bodies inside and outside the collecting bottle to be mutually communicated;
s5, when the collection bottle 4 moves to a preset water depth, the water sample at the current water level is collected in the collection bottle 4, then the lifting rope is pulled upwards, the collection device moves upwards, the upper sealing plate 12 moves downwards to seal the first through hole 11 under the impact of water flow, and the lower sealing plate 44 moves downwards to seal the water inlet hole 42, so that the water sample collected by the collection bottle 4 can be completely taken out of the water surface;
s6, opening the first arc plate 51 and the second arc plate 52, rotating the threaded block 3 downwards, taking out the collection bottle 4, then replacing the new collection bottle 4, continuing sampling, and avoiding the trouble of transferring the water sample.
Through above-mentioned operation, conveniently carry out continuous sampling to different positions, sample efficiency is high, has removed the trouble of shifting the water sample simultaneously, labour saving and time saving.
In the second embodiment, as shown in fig. 7-8, a plurality of compression plates 7 are horizontally and fixedly arranged at the upper ends of the connecting columns 5, fourth through holes 73 are formed in the compression plates 7, the aperture of each fourth through hole 73 is larger than the maximum size of the collection bottle 4, and a plurality of locking structures are arranged between the upper seat plate 1 and the compression plates 7.
The locking structure comprises a locking plate 15 and a second bolt 71, the locking plate 15 is horizontally and fixedly arranged at the outer side edge of the upper seat plate 1, a top notch groove 151 is formed in the outer side edge of the locking plate 15 and is detachably arranged on the pressing plate 7, the lower end of the second bolt 71 is rotatably arranged on the side edge of the pressing plate 7, a second butterfly nut 72 is connected to the second bolt 71 in a threaded manner, when the upper seat plate 1 is covered on the pressing plate 7 and is opposite to the upper seat plate, the second bolt 71 is rotated upwards to be inserted into the top notch groove 151 of the locking plate 15, and then the second butterfly nut 72 is rotated downwards to lock the upper seat plate 1 and the pressing plate 7 together.
Through the design, the upper seat board 1 can be opened, the collection bottle can be directly vertically placed into the first groove 21 of the lower seat board 2, then the screw thread block 3 is rotated upwards, and the water outlet 43 of the collection bottle is pushed into the first through hole, so that the operation is simple.
The fixed rod 46 is fixedly connected between the upper sealing plate 12 and the lower sealing plate 44, and meanwhile, the condition that the lower sealing plate 44 can freely enter and exit the water outlet 43 is met, and in the sampling process, the upper sealing plate 12 and the lower sealing plate 44 synchronously move upwards, so that smooth water inflow in the collection bottle 4 is ensured, and the water sample in the collection bottle 4 is retained.
When the sampling is completed, the screw thread tube head 47 is closed by the lower rotary cover 49, the water inlet hole 42 is plugged, then the second butterfly nut is rotated, the second bolt is rotated outwards, the upper seat plate is lifted upwards, meanwhile, the upper sealing plate 12 and the lower sealing plate 44 move upwards, the lower sealing plate moves out of the water outlet 43 of the collection bottle, and finally the upper rotary cover 48 is covered, so that the sampling is completed, and water sample loss is avoided when the collection bottle is taken out.
Meanwhile, in the scheme, the limit hooks 45 arranged in the acquisition bottle 4 are omitted, the manufacturing flow of the acquisition bottle 4 is simplified, and the manufacturing cost of the acquisition bottle 4 is reduced.
In the third embodiment, as shown in fig. 9 to 10, a rotating shaft 6 is horizontally rotatably disposed between two opposite supporting legs 23, and a plurality of rotating blades 61 are circumferentially disposed on the rotating shaft 6 directly below the annular plate 33.
When the collecting device is lowered, the impact of water flow is received, the rotating shaft 6 and the rotating blade plate 61 rotate, so that water plants and aquatic organisms are prevented from entering the collecting bottle 4 through the water inlet hole 42, and the smooth sampling work is ensured.
Preferably, the supporting leg 23 has a tubular structure, an L-shaped supporting leg 231 is slidably disposed in the supporting leg, a buffer spring 232 is connected between the upper end of the L-shaped supporting leg 231 and the lower seat plate 2, when the collecting device falls to the water bottom, the impact on the collecting device is reduced through the compression of the buffer spring 232, meanwhile, a large amount of sediment with the water bottom is prevented from being excessively impacted, and enters the collecting bottle 4, the adaptability of the collecting device to different water bottom terrains can be enhanced, so that the collecting device cannot fall down, and in addition, the contact area between the L-shaped supporting leg 231 and the water bottom is increased, and the landing stability is improved.
In addition, the number of the connecting columns 5 is increased, the overall structural strength of the collecting device can be improved, the device is prevented from happening in the up-down moving process, and the collecting bottle 4 is prevented from being damaged.
Claims (6)
1. The water sample collecting device is characterized by comprising an upper seat board (1), wherein a first through hole (11) is formed in the upper seat board (1), a door frame (13) is arranged on the upper side surface of the upper seat board (1), a hanging ring (131) is arranged on the door frame (13), and an upper sealing plate (12) is movably arranged on the upper seat board (1) above the first through hole (11);
The lower seat board (2), the downside of upper seat board (1) is equipped with a plurality of spliced pole (5), lower seat board (2) links firmly on spliced pole (5), the downside of lower seat board (2) is equipped with a plurality of supporting leg (23) along circumference, the outside of lower seat board (2) is equipped with counter weight ring (9), a plurality of spliced pole (5) upper end level has set firmly pinch-off strip (7), set up fourth through-hole (73) on pinch-off strip (7), upper seat board (1) detachable setting is on pinch-off strip (7);
The collecting bottle (4), collecting bottle (4) is big end down's cylindric, inlet opening (42) have been seted up to collecting bottle (4) bottom, collecting bottle (4) top is equipped with delivery port (43), and collecting bottle (4) internal activity that is located inlet opening (42) top is provided with down shrouding (44), collecting bottle (4) are placed between upper bedplate (1) and lower bedplate (2), fixed link (46) have between upper shrouding (12) and lower shrouding (44), lower shrouding (44) can freely pass in and out delivery port (43);
the water inlet structure is arranged on the lower seat plate (2), and can introduce external water into a water inlet hole (42) of the acquisition bottle (4) and fix the acquisition bottle (4);
the water inlet structure comprises:
the inner threaded hole (22) is formed in the upper side face of the lower seat plate (2), a first groove (21) is formed in the upper side face of the lower seat plate, and the inner threaded hole (22) is formed in the bottom of the first groove (21) in a penetrating mode;
The threaded block (3), threaded block (3) threaded connection is on internal thread hole (22), run through on threaded block (3) and set up second through-hole (31), the up end of threaded block (3) rotates and is provided with shutoff piece (32), run through on shutoff piece (32) and set up third through-hole (321), second through-hole (31) and third through-hole (321) are just right from top to bottom;
The lower end face of the thread block (3) is provided with a circular ring plate (33), and a filter screen (331) is fixedly arranged in a central hole of the circular ring plate (33);
A rotating shaft (6) is horizontally arranged between two opposite supporting legs (23) in a rotating mode, and a plurality of rotating blades (61) are arranged on the rotating shaft (6) located under the circular plate (33) along the circumferential direction.
2. A water sample collection device according to claim 1, wherein a retainer ring (111) is arranged in the first through hole (11), and an annular rubber pad is arranged on the lower side surface of the retainer ring (111).
3. A water sample collection device according to claim 2, wherein the underside of the annular plate (33) is provided with a plurality of operating plates (332) in a radial direction.
4. A water sample collection device according to claim 3, wherein the connecting columns (5) are two and oppositely arranged, a first arc plate (51) and a second arc plate (52) are hinged on one connecting column (5) respectively, the first arc plate (51) and the second arc plate (52) rotate in opposite directions to form an annular space capable of wrapping the collection bottle (4), the outer side edges of the first arc plate (51) and the second arc plate (52) are detachably fixed on the other connecting column (5), and a first rubber pad (56) is arranged on one side, close to the collection bottle (4), of the first arc plate (51) and the second arc plate (52).
5. The water sample collecting device according to claim 4, wherein a limiting cover (14) is arranged on the upper seat plate (1) above the first through hole (11), and the upper sealing plate (12) is arranged in the limiting cover (14) in an up-and-down movable manner.
6. A method of sampling a water sample using a water sampling device according to claim 5, comprising the steps of:
S1, opening a first circular arc plate (51) and a second circular arc plate (52), vertically placing a collection bottle (4) between an upper seat plate (1) and a lower seat plate (2), enabling the bottom of the collection bottle (4) to be positioned in a first groove (21), and enabling a water outlet (43) of the collection bottle (4) to be opposite to a first through hole (11) of the upper seat plate (1);
S2, the annular plate (33) and the threaded block (3) are rotated upwards through the operation plate (332), after the plugging block (32) contacts the bottom of the collection bottle (4), the collection bottle (4) is pushed to move upwards, the water outlet (43) of the collection bottle (4) enters the first through hole (11) of the upper seat plate (1), and the collection bottle (4) is fixed when the water outlet (43) contacts and presses the annular rubber pad of the check ring (111);
S3, closing the first arc plate (51) and the second arc plate (52) in opposite directions, and fixing the outer side of the acquisition bottle (4) by using two first rubber pads (56);
S4, the collecting device is brought to a designated water area, a lifting rope and a lifting hook are arranged on a lifting ring (131), then the collecting device is lowered, under the action of the gravity of the collecting device, a counterweight ring (9) or an additional counterweight, the collecting device vertically moves downwards, a lower sealing plate (44) at the bottom of a collecting bottle (4) receives water flow impact to move upwards, a water inlet hole (42) is opened, water enters the collecting bottle (4) from the water inlet hole (42), then continues to flow upwards to impact an upper sealing plate (12) of an upper seat plate (1), the upper sealing plate (12) is upwards, and a first through hole (11) is opened to enable water bodies inside and outside the collecting bottle to be mutually communicated;
S5, when the collection bottle (4) moves to a preset water depth, the water sample at the current water level is collected in the collection bottle (4), then the lifting rope is pulled upwards, the collection device moves upwards, the upper sealing plate (12) moves downwards to seal the first through hole (11) under the impact of water flow, and the lower sealing plate (44) moves downwards to seal the water inlet hole (42), so that the water sample collected by the collection bottle (4) can be completely brought out of the water surface;
s6, opening the first circular arc plate (51) and the second circular arc plate (52), rotating the threaded block (3) downwards, taking out the collection bottle (4), replacing the collection bottle (4), and continuing to sample.
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