CN118243889B - Sampling device for water quality detection - Google Patents
Sampling device for water quality detection Download PDFInfo
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- CN118243889B CN118243889B CN202410666351.XA CN202410666351A CN118243889B CN 118243889 B CN118243889 B CN 118243889B CN 202410666351 A CN202410666351 A CN 202410666351A CN 118243889 B CN118243889 B CN 118243889B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/18—Water
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B22/00—Buoys
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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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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/34—Purifying; Cleaning
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/20—Controlling water pollution; Waste water treatment
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Abstract
The application relates to the technical field of water sample collection, in particular to a sampling device for water quality detection, which comprises a sampler body, a plug body and a buoy assembly, wherein a cavity for accommodating water is formed in the sampler body, and the bottom of the sampler body is provided with a water inlet; the buoy assembly is in an initial state and is used for limiting the plug body so that the plug body can seal the water inlet; after the sampling device is put into water, the floating assembly floats on the water surface, and the sampler body and the plug body sink synchronously; in the synchronous sinking process of the sampler body and the plug body, the water inlet is positioned under water, the buoyancy of the float assembly is gradually increased, the float assembly moves relative to the sampler body, the limit of the plug body is relieved by the float assembly, and shallow water enters the cavity through the water inlet. The sampling device can prevent impurities such as floaters or oil films floating on the water surface from being collected into the sampler body, and can improve the detection efficiency and accuracy of the water body.
Description
Technical Field
The invention relates to the technical field of water sample collection, in particular to a sampling device for water quality detection.
Background
Various organic and inorganic substances exist in natural environment water bodies, have important influences on the quality and the function of the water bodies, are the basis and the key of environment monitoring through sampling and analyzing the water bodies, and directly influence the authenticity and the accuracy of monitoring data.
The sampling method is a common water sampling method at present, and generally, a sampling person can sample areas with different heights from the water surface in the water body, so that water samples with different depths are obtained.
Although the accuracy of environmental monitoring can be further improved by sampling and analyzing the water bodies with different depths, the inventor finds that the current water body sampling mode has the defects in the process of actually sampling the water bodies with different depths, and specifically comprises the following steps:
When the shallow water body is sampled, the sampler not only collects the shallow water body, but also sometimes collects impurities such as floaters or oil films on the surface layer of the water body, so that the shallow water body sample collected by the sampler contains more impurities, and when the water body is subjected to detection and analysis operation in the follow-up process, the impurities in the water body are separated and then are detected and analyzed, and therefore, the detection efficiency and accuracy of detection personnel on the water body are affected.
Therefore, based on the problem that the detection efficiency and accuracy of the water body are affected by the fact that the water body sample contains impurities such as floaters or oil films when the shallow water body is sampled at present, the sampling device for water quality detection is provided, so that the detection efficiency and accuracy of the water body are improved.
Disclosure of Invention
The invention aims at: aiming at the problem that the detection efficiency and accuracy of the water body are affected due to the fact that impurities such as floaters or oil films are contained in the water body sample when the shallow water body is sampled at present, the sampling device for water quality detection is provided, so that the detection efficiency and accuracy of the water body are improved.
In order to achieve the above object, the present invention provides the following technical solutions:
The sampling device for water quality detection comprises a sampler body, a plug body and a buoy assembly, wherein a cavity for accommodating water is formed in the sampler body, a water inlet is formed in the bottom of the sampler body, and the plug body is matched with the water inlet;
The buoy assembly is in an initial state and is used for limiting the plug body, so that the plug body can plug the water inlet, and the buoy assembly can be in the initial state before the sampling device enters water;
After the sampling device is put into water, the buoy assembly floats on the water surface, and the sampler body and the plug body sink synchronously; in the synchronous sunken in-process of sampler body and cock body, the water inlet is located under water, the buoyancy of cursory subassembly increases gradually, makes cursory subassembly removes relative sampler body, cursory subassembly releases the spacing to the cock body, makes the cock body releases the shutoff to the water inlet, shallow water is passed through the water inlet gets into in the cavity.
As a preferential technical scheme of the application, the top of the sampler body is provided with the air outlet, the plug body is connected with the pull rope, and the pull rope sequentially passes through the water inlet and the air outlet.
As a preferential technical scheme of the application, the float component is in an annular structure and surrounds the outer wall of the sampler body, and when the float component is in an initial state, the float component is coated at the water inlet of the sampler body.
As a preferred technical scheme of the application, the sampler body comprises a body part, the outer wall of the body part is in an inverted cone shape, and when the sampler body gradually sinks and the float assembly corresponds to the body part, the diameter of the annular structure formed by the float assembly gradually increases.
As a preferential technical scheme of the application, the buoy assembly comprises a plurality of floating bodies and connecting bodies, wherein two adjacent floating bodies are connected through the connecting bodies, the floating bodies can move along the outer wall of the sampler body, when the sampler body gradually sinks and the buoyancy of the buoy assembly gradually increases, the distance between the adjacent floating bodies gradually increases, the lower parts of the floating bodies and the lower parts of the connecting bodies are both positioned under the water surface, and the upper parts of the floating bodies and the upper parts of the connecting bodies are both positioned on the water surface.
As a preferred technical scheme of the application, a chute is arranged on the side wall of the sampler body, the floating body is clamped in the chute, the floating body can move along the length direction of the chute, and when the floating body moves along the length direction of the chute, the position of the floating body in the height direction of the sampler body is changed; the sliding chute is internally provided with a pushing part and an elastic part, one end of the elastic part pushes against the pushing part, the other end of the elastic part pushes against the floating body, when the floating body moves towards a direction away from the water inlet relative to the sampler body under the action of external force, the deformation of the elastic part gradually increases, and under the action of no external force, the elastic part provides elastic force to reset the floating body.
As a preferred technical scheme of the application, the position of the pushing piece in the chute along the length direction of the chute is adjustable;
The pushing piece is in threaded connection with an extrusion piece, the extrusion piece and the pushing piece are matched to clamp the groove wall of the sliding groove, and the extrusion piece is enabled to rotate relative to the pushing piece and used for adjusting the size of a clamping space between the extrusion piece and the pushing piece, which is used for clamping the groove wall of the sliding groove.
As a preferred technical scheme of the application, the cross section of the connector is in a wavy structure, when the distance between the adjacent floating bodies is gradually increased, the connector is gradually stretched, when the distance between the adjacent floating bodies is gradually reduced, the connector is gradually compressed, and floaters on the water surface can be clamped by the wavy structure of the connector;
The connector has elasticity;
An adsorption layer for adsorbing an oil film is arranged on the surface of one side, deviating from the sampler body, of the connector.
As a preferred technical scheme of the application, the floating body comprises a clamping part, the plug body is provided with a clamping groove, and when the float assembly is in an initial state, the clamping part is positioned in the clamping groove so as to limit the plug body; in the process that the float assembly moves from the initial state to the direction far away from the water inlet, the clamping part is gradually separated from the clamping groove, so that the limit on the plug body is relieved.
As a preferential technical scheme of the application, the plug body is provided with a collecting part, the plug body can sink into the water after entering the water, and the collecting part is used for collecting soil at the water.
Compared with the prior art, the invention has the beneficial effects that:
1. in the scheme of the application, the floating assembly is arranged, so that when the floating assembly is in an initial state, the floating assembly limits the plug body, the plug body seals the water inlet, after the sampling device enters water, under the self-gravity action of the sampler body and the plug body and under the limited action of the plug body, the sampler body and the plug body sink synchronously, in the sinking process, the buoyancy of the floating assembly floating on the water surface is gradually increased, the floating assembly moves relative to the sampler body, the floating assembly releases the limit of the plug body, the plug body releases the seal of the water inlet, shallow water enters the cavity through the water inlet, and in the whole process that the water enters the cavity through the water inlet, the water inlet is positioned under the water, so that the water inlet is far away from the surface of the water, in the process that the water is collected into the cavity of the sampler body through the water inlet, the floating materials or oil films and other impurities on the water surface can be prevented from being collected into the sampler body, meanwhile, the water inlet direction on the sampler body deviates from the water surface is further reduced, the water inlet surface quality of the water surface can be further reduced, the water sample can be accurately detected, and the quality of the water sample can be further measured at the water surface layer is further reduced, and the water sample quality can be accurately detected when the water surface is in the water layer;
When the sampler body collects water, under the action of the buoy assembly, the sampler body is kept in a vertical state, the wind resistance and tilting resistance of the sampler body are improved, so that the sampler body can be in any state to be in contact with the water, the sampler body can be kept in a vertical or horizontal or tilting state to be in contact with the water, and when the water inlet is not immersed in the water, the plug body keeps blocking the water inlet, so that the operation difficulty of a sampling person in placing the sampling device into the water is reduced on the basis of avoiding collecting impurities such as floaters or oil films floating on the water surface to the sampler body;
2. further, the float component is made to be in an annular structure to encircle the outer wall of the sampler body, and when the float component is in an initial state, the float component is wrapped at the water inlet of the sampler body, so that in the process that the sampler body stretches into a water body, the water inlet is separated from impurities floating on the water surface through the float component, and the impurities floating on the water surface can be further prevented from entering the cavity of the sampler body from the water inlet;
3. Furthermore, by arranging the sliding groove and arranging the pushing piece and the elastic piece in the sliding groove, one end of the elastic piece is propped against the pushing piece, the other end of the elastic piece is propped against the floating body, and the elastic piece can provide elastic force to enable the floating assembly to maintain an initial state so as to enable the floating assembly to limit the plug body, and the stability of the plug body for sealing the water inlet can be improved; meanwhile, in the process that the water inlet is plugged to the sampler body to collect the water body samples, the floating body moves towards the direction far away from the central axis of the sampler body, so that the floating body does not limit the plug body any more, and in the whole process that the sampler body collects the water body samples, the floating body cannot reset to a position state when limiting the plug body, further after the sampler body collects the required water body samples, the plug body moves towards the direction close to the sampler body by pulling the pull rope, then the plug body contacts the water inlet and pushes the sampler body to move towards the direction far away from the water bottom, in the process that the sampler body gradually moves towards the direction far away from the water bottom, the buoyancy effect of the floating body is reduced, and then under the elastic action of the elastic piece, the floating body is pushed to move towards the direction close to the central axis of the sampler body, so that the floating component gradually returns to the initial state, so that the floating component limits the plug body again, further the stability of the plug body for plugging the water inlet can be improved, after the sampler body is transferred from water to the water surface, the stability of the relative position between the plug body and the sampler body can be improved, and the water sample can be further prevented from being collected;
4. Further, the position of the pushing piece in the sliding groove along the length direction of the sliding groove is adjustable, specifically, the pressing piece is rotated relative to the pushing piece to adjust the size of a clamping space between the pressing piece and the pushing piece for clamping the groove wall of the sliding groove, and the position of the pushing piece in the length direction of the sliding groove is sequentially adjusted, so that the deformation of the elastic piece when the floating assembly is in an initial state can be adjusted, the buoyancy required by the floating assembly in the process of releasing the limit of the plug body can be further adjusted, the distance between the water inlet and the water surface of the water inlet in the process of removing the seal of the plug body is further adjusted, so that the position of a sample to be collected in the water body in the height direction can be conveniently adjusted, and when a sampler samples a shallow water body, the sampler can selectively collect the water body close to the water surface in the shallow water body or collect the water body far away from the water surface in the shallow water body, so that the flexibility of the sampler can be improved in the process of sampling;
5. Further, through setting up the cross-section of connector to the wavy, the in-process of collecting the water after the sampler body goes into water, body and connector float on the surface of water, make the impurity that floats on the surface of water can be long-time with body and connector contact, after the water sample is collected the completion, the sampler body is the in-process of keeping away from the direction removal of submarine, the buoyancy of body reduces gradually, the diameter of the annular structure that its cursory subassembly formed reduces gradually, the distance between the adjacent body reduces gradually, make the connector compress gradually, because of the impurity that floats on the surface of water can be long-time with the connector contact, make impurity such as floater on the surface of water more easily by connector centre gripping, more easily make the connector of compression collect the impurity that floats on the surface of water, the setting of its adsorbed layer simultaneously, more easily collect the oil film that floats, so, the sampling device of the application is in the time of taking a sample to shallow water body, still easily float the impurity such as thing or oil film on the surface of water, simultaneously be difficult for making follow connector and break away from the connector after the connector is the compression, and sample the impurity is mixed with the detection personnel that sample the impurity is convenient for the sample alone.
Drawings
FIG. 1 is a schematic diagram of a sampling device for water quality testing according to an embodiment of the present application;
FIG. 2 is a schematic diagram of a sampling device for water quality testing according to an embodiment of the present application, in which a plug body is used to unblock a water inlet;
FIG. 3 is a schematic view of a partial structure of a plug body and a float assembly when the plug body in one embodiment of a sampling device for water quality testing according to the present application unblocks a water inlet;
FIG. 4 is a schematic cross-sectional view of one embodiment of a sampling device for water quality testing according to the present application;
FIG. 5 is an enlarged schematic view of the portion A of FIG. 4 of a sampling device for water quality testing according to the present application;
FIG. 6 is an enlarged schematic view of the portion B of FIG. 4 of a sampling device for water quality testing according to the present application;
the figures indicate: the sampler comprises a 1-sampler body, a 2-plug body, a 3-buoy assembly, a 4-cavity, a 5-water inlet, a 6-air outlet, a 7-stay rope, a 8-body part, a 9-floating body, a 10-connector, a 11-sliding chute, a 12-pushing piece, a 13-elastic piece, a 14-extrusion piece, a 15-clamping part, a 16-clamping groove and a 17-collecting part.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. It will be apparent that the described embodiments are some, but not all, embodiments of the invention.
Thus, the following detailed description of the embodiments of the invention is not intended to limit the scope of the invention, as claimed, but is merely representative of some embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that, under the condition of no conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present invention, it should be noted that, the terms "upper", "lower", and the like indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, or an azimuth or a positional relationship conventionally put in use of the inventive product, or an azimuth or a positional relationship conventionally understood by those skilled in the art, such terms are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or element to be referred must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
Embodiment one: the sampling device for water quality detection provided by the embodiment is shown in fig. 1-5, and comprises a sampler body 1, a plug body 2 and a buoy assembly 3, wherein a cavity 4 for accommodating water is formed in the sampler body 1, a water inlet 5 is formed in the bottom of the sampler body 1, and the plug body 2 is matched with the water inlet 5;
The float assembly 3 is in an initial state, the float assembly 3 in the initial state is used for limiting the plug body 2, so that the plug body 2 seals the water inlet 5, and the float assembly 3 can be in the initial state before the sampling device is filled with water;
After the sampling device is put into water, the buoy assembly 3 floats on the water surface, and the sampler body 1 and the plug body 2 sink synchronously; in the synchronous sunken in-process of sampler body 1 and cock body 2, water inlet 5 is located under water, the buoyancy of cursory subassembly 3 increases gradually, makes cursory subassembly 3 remove relative sampler body 1, cursory subassembly 3 releases spacing to cock body 2, makes cock body 2 releases the shutoff to water inlet 5, shallow water is passed through water inlet 5 gets into in the cavity 4.
In the application, by arranging the float assembly 3, when the float assembly 3 is in an initial state, the float assembly 3 limits the plug body 2, so that the plug body 2 plugs the water inlet 5, after the sampling device is filled with water, under the self gravity action of the sampler body 1 and the plug body 2 and under the limiting action of the plug body 2, the sampler body 1 and the plug body 2 synchronously sink, in the sinking process, the buoyancy of the float assembly 3 floating on the water surface is gradually increased, so that the float assembly 3 moves relative to the sampler body 1, the float assembly 3 releases the limit of the plug body 2, so that the plug body 2 releases the plug of the water inlet 5, shallow water enters the cavity 4 through the water inlet 5, in the whole process that the water body enters the cavity 4 through the water inlet 5, the water inlet 5 is positioned under water, so that the water inlet 5 is far away from the surface of the water body, in the process that the water body is collected to the cavity 4 of the sampler body 1 through the water inlet 5, impurities such as floaters or oil films floating on the water surface can be prevented from being collected into the sampler body 1, meanwhile, the water inlet direction of the water inlet 5 on the sampler body 1 is far away from the water surface, the probability that the impurities suspended on the surface layer of the water body flow towards the water inlet 5 can be further reduced, and the impurity quantity in the collected shallow water body sample is further reduced, so that the detection efficiency and accuracy of the water body can be improved when the water quality of the shallow water body sample is detected;
And when the sampler body 1 collects the water body, under the effect of the float component 3, the sampler body 1 is kept in a vertical state, the wind resistance and tilting resistance of the sampler body 1 are improved, so that the sampler body 1 can be in contact with the water body in any state, the sampler body 1 can be kept in a vertical or horizontal or tilting state to be in contact with the water body, when the water inlet 5 is not immersed in the water body, the plug body 2 keeps blocking the water inlet 5, and therefore, on the basis of avoiding collecting impurities such as floats or oil films floating on the water surface to the sampler body 1, the operation difficulty of sampling personnel in placing the sampling device into the water body is reduced.
As a preferred embodiment, based on the above-mentioned mode, further, the top of the sampler body 1 is provided with an air outlet 6, the plug body 2 is connected with a pull rope 7, and the pull rope 7 sequentially passes through the water inlet 5 and the air outlet 6.
Further, through setting up gas vent 6 to connect stay cord 7 on cock body 2, its stay cord 7 wears out through water inlet 5 and gas vent 6 in proper order, so, but sampling personnel hand stay cord 7, makes sampler body 1 and cock body 2 sink into the aquatic and carries out water sample collection, after collecting the water sample in the sampler, sampling personnel pulling stay cord 7 for cock body 2 again blocks up water inlet 5, and makes the stay cord 7 shift the sampler body 1 that is equipped with the water to the bank or by the sampling personnel body from the aquatic, thereby has improved the convenience of taking a sample.
As a preferred embodiment, on the basis of the above manner, the float assembly 3 is further formed in an annular structure surrounding the outer wall of the sampler body 1, and when the float assembly 3 is in an initial state, the float assembly 3 is wrapped at the water inlet 5 of the sampler body 1.
Further, make cursory subassembly 3 be annular structure and encircle in the outer wall department of sampler body 1 to when cursory subassembly 3 is in initial state, cursory subassembly 3 parcel is in the water inlet 5 department of sampler body 1, so, at the in-process that sampler body 1 stretches into the water, separates through cursory subassembly 3 between the impurity of water surface water inlet 5 and floating, can further avoid floating in the impurity of water surface gets into the cavity 4 of sampler body 1 from water inlet 5.
As a preferred embodiment, on the basis of the above-mentioned aspect, the sampler body 1 further includes a body portion 8, the outer wall of the body portion 8 is in an inverted cone shape, and when the sampler body 1 gradually sinks and the float assembly 3 corresponds to the body portion 8, the diameter of the annular structure formed by the float assembly 3 gradually increases.
Further, through setting up body one part 8, and make the outer wall of body one part 8 be the back taper, when sampler body 1 subsides gradually and the cursory subassembly 3 corresponds body one part 8, the diameter of the annular structure that its cursory subassembly 3 formed increases gradually, make cursory subassembly 3 will float the impurity on the surface of water to keep away from the direction of the central axis of sampler body 1 gradually to promote, can further make the impurity that floats on the surface of water keep away from water inlet 5, further reduced the probability that the impurity that floats got into in the cavity 4 of sampler body 1.
Embodiment two: on the basis of the technical scheme of the embodiment, further, referring to fig. 1-6, the float assembly 3 includes a plurality of floats 9 and a connector 10, two adjacent floats 9 are connected by the connector 10, the floats 9 can move along the outer wall of the sampler body 1, when the sampler body 1 gradually sinks and the buoyancy of the float assembly 3 gradually increases, the distance between the adjacent floats 9 gradually increases, the lower parts of the floats 9 and the lower parts of the connector 10 are both located under the water surface, and the upper parts of the floats 9 and the connector 10 are both located on the water surface.
Further, through setting up body 9 and connector 10, when the buoyancy of sampler body 1 subsides gradually and cursory subassembly 3 increases gradually, the distance between the adjacent body 9 increases gradually, and the in-process of distance between the adjacent body 9 increases gradually, connector 10 remains the state that is connected with two adjacent bodies 9 all the time, so, the diameter of the annular structure that is convenient for make cursory subassembly 3 form increases, do benefit to the morphological change of cursory subassembly 3, and when cursory subassembly 3 floats on the surface of water, make the lower part of body 9 and the lower part of connector 10 all be located the surface of water, and make the upper portion of body 9 and the upper portion of connector 10 all be located the surface of water, can further reduce the probability that sampler body 1's outer wall contacts the impurity of floating at the water, and then reduce the impurity of floating at the impurity to the outer wall of sampler body 1.
Further, the floating body 9 has elasticity, so that the floating body 9 can be always matched with the side wall of the sampler body 1 when the diameter of the annular structure formed by the floating body 9 and the connector 10 is changed.
As a preferable embodiment, in addition to the above-described aspect, a chute 11 is provided on a side wall of the sampler body 1, the floating body 9 is engaged in the chute 11, the floating body 9 is movable along a longitudinal direction of the chute 11, and when the floating body 9 moves along the longitudinal direction of the chute 11, a position of the floating body 9 in a height direction of the sampler body 1 is changed; the sliding chute 11 is internally provided with a pushing piece 12 and an elastic piece 13, one end of the elastic piece 13 is propped against the pushing piece 12, the other end is propped against the floating body 9, when the floating body 9 moves towards a direction far away from the water inlet 5 relative to the sampler body 1 under the action of external force, the deformation of the elastic piece 13 is gradually increased, and under the action of no external force, the elastic piece 13 provides elastic force to enable the floating body 9 to reset.
Furthermore, by arranging the sliding groove 11, the sliding groove 11 is matched with the floating body 9, and the pushing piece 12 and the elastic piece 13 are arranged in the sliding groove 11, specifically, the elastic piece 13 can be made to be a spring, one end of the elastic piece 13 is abutted against the pushing piece 12, the other end is abutted against the floating body 9, and the elastic piece 13 can provide elastic force to enable the floating assembly 3 to maintain an initial state so as to enable the floating assembly 3 to limit the plug body 2, and the stability of the plug body 2 for sealing the water inlet 5 can be improved; simultaneously at water inlet 5 by shutoff form to sampler body 1 collect the in-process of water body sample, body 9 moves towards the direction of keeping away from the central axis of sampler body 1, make body 9 no longer carry out spacingly to cock body 2, and at the whole in-process that sampler body 1 was collected water body sample, body 9 can not reset to the position state when spacing to cock body 2, and then after required water body sample was collected to sampler body 1, through pulling stay cord 7, make cock body 2 remove towards the direction that is close to sampler body 1, then cock body 2 contact water inlet 5 and push sampler body 1 remove towards the direction of keeping away from the water bottom, in the in-process that sampler body 1 gradually moves towards the direction of keeping away from the water bottom, the buoyancy effect of body 9 reduces, and then under the elastic component 13's elasticity effect, body 13 promotes body 9 and moves towards the direction of being close to the central axis of sampler body 1, make the float assembly 3 resume to initial state gradually, make the cock body 2 spacing again, and then can improve the steadiness that cock body 2 carries out water inlet 5, shift to the device can be followed in the water quality that the device is followed, can further improvement leak protection device when the sample is carried out to the device is more than the water quality is compared to the sample 1.
As a preferred embodiment, further, on the basis of the above-described mode, the position of the pushing member 12 in the chute 11 along the length direction of the chute 11 is adjustable;
The pushing piece 12 is in threaded connection with an extrusion piece 14, the extrusion piece 14 and the pushing piece 12 are matched to clamp the groove wall of the sliding groove 11, and the extrusion piece 14 is rotated relative to the pushing piece 12 to adjust the size of a clamping space between the extrusion piece 14 and the pushing piece 12 for clamping the groove wall of the sliding groove 11.
Further, the position of the pushing member 12 in the chute 11 along the length direction of the chute 11 is made to be adjustable, specifically, the pressing member 14 is rotated relative to the pushing member 12 to adjust the size of a clamping space between the pressing member 14 and the pushing member 12 for clamping the chute 11, and the position of the pushing member 12 along the length direction of the chute 11 is sequentially adjusted, so that the deformation amount of the elastic member 13 when the float assembly 3 is in an initial state can be adjusted, further, the buoyancy required when the limit of the float assembly 3 to the plug body 2 is released can be adjusted, and further, the distance between the water inlet 5 and the water surface when the plug body 2 releases the plug body 5 is adjusted, so that the position of a sample to be collected in the water body in the height direction can be conveniently adjusted, and when a sampler samples a shallow water body, the sampler can selectively collect the water body close to the water surface or collect the water body far away from the water surface in the shallow water body, so that the flexibility of the sampling device can be improved.
Embodiment III: on the basis of the second technical solution of the embodiment, further, referring to fig. 1 to 5, the cross section of the connector 10 is in a wave-like structure, when the distance between the adjacent floating bodies 9 is gradually increased, the connector 10 is gradually stretched, when the distance between the adjacent floating bodies 9 is gradually reduced, the connector 10 is gradually compressed, and the floating objects on the water surface can be clamped by the wave-like structure of the connector 10;
The connector 10 has elasticity;
an adsorption layer for adsorbing an oil film is arranged on the surface of one side, facing away from the sampler body 1, of the connector 10.
Further, through setting up the cross-section of connector 10 to be wavy, the in-process of collecting the water after sampler body 1 goes into water, body 9 and connector 10 float on the surface of water, make the impurity that floats on the surface of water can be long-time with body 9 and connector 10 contact, after the water sample is collected, sampler body 1 is towards the in-process of keeping away from the direction removal of submarine, body 9's buoyancy reduces gradually, the diameter of the annular structure that its cursory subassembly 3 formed reduces gradually, the distance between the adjacent body 9 reduces gradually, make connector 10 compressed gradually, because of the impurity ability long-time and the connector 10 contact of floating on the surface of water, make impurity such as floater on the surface of water more easily by connector 10 centre gripping, make the connector 10 of compression form collect the impurity on the surface of water, the setting of its adsorbed layer simultaneously, more easily collect the oil film that floats, so, the sampling device of the application is in the sample to shallow water the in the time, still easily sample the impurity or the equity on the float, simultaneously be easy to be in connector 10 and be the compression and make the impurity on the surface of water sample 10 and the sample alone and the sample with the impurity is not mixed together in the water of sample, the sample is convenient for the personnel to detect the impurity on the surface of water.
As a preferred embodiment, in addition to the above embodiment, the floating body 9 further includes a holding portion 15, the plug body 2 is provided with a clamping groove 16, and when the float assembly 3 is in the initial state, the holding portion 15 is located in the clamping groove 16 so as to limit the plug body 2; during the process of moving the float assembly 3 from the initial state to the direction away from the water inlet 5, the clamping part 15 is gradually separated from the clamping groove 16, so as to release the limit of the plug body 2.
Further, by providing the holding portion 15 and the clamping groove 16, when the holding portion 15 is matched with the clamping groove 16, the stopper body 2 is convenient to limit.
In a preferred embodiment, in addition to the above embodiment, the plug body 2 is further provided with a collecting portion 17, the plug body 2 can sink into the water after entering the water, and the collecting portion 17 is used for collecting soil at the water.
Furthermore, by arranging the collecting part 17 on the plug body 2, after the plug body 2 releases the plugging of the water inlet 5, the plug body 2 can sink into the water bottom, and the collecting part 17 is arranged, so that the soil at the water bottom can be conveniently collected, and the sampling device can collect a plurality of different samples; and at the instant when the plug body 2 releases the blocking of the water inlet 5, the water inlet 5 is still under water.
The above embodiments are only for illustrating the present invention and not for limiting the technical solutions described in the present invention, and although the present invention has been described in detail in the present specification with reference to the above embodiments, the present invention is not limited to the above specific embodiments, and thus any modifications or equivalent substitutions are made to the present invention; all technical solutions and modifications thereof that do not depart from the spirit and scope of the invention are intended to be included in the scope of the appended claims.
Claims (5)
1. A sampling device for water quality testing, its characterized in that: the water sampler comprises a sampler body, a plug body and a buoy assembly, wherein a cavity for accommodating water is formed in the sampler body, a water inlet is formed in the bottom of the sampler body, and the plug body is matched with the water inlet;
The buoy assembly is in an initial state and is used for limiting the plug body, so that the plug body can plug the water inlet, and the buoy assembly can be in the initial state before the sampling device enters water;
After the sampling device is put into water, the buoy assembly floats on the water surface, and the sampler body and the plug body sink synchronously; in the synchronous sinking process of the sampler body and the plug body, the water inlet is positioned under water, the buoyancy of the float assembly is gradually increased, so that the float assembly moves relative to the sampler body, the limit of the plug body is released by the float assembly, the plug body releases the blocking of the water inlet, and shallow water enters the cavity through the water inlet;
The buoy assembly is in an annular structure and surrounds the outer wall of the sampler body, and when the buoy assembly is in an initial state, the buoy assembly is coated at the water inlet of the sampler body;
The sampler body comprises a body part, the outer wall of the body part is in an inverted cone shape, and when the sampler body gradually sinks and the float assembly corresponds to the body part, the diameter of an annular structure formed by the float assembly gradually increases;
The floating assembly comprises a plurality of floating bodies and connecting bodies, wherein two adjacent floating bodies are connected through the connecting bodies, the floating bodies can move along the outer wall of the sampler body, when the sampler body gradually sinks and the buoyancy of the floating assembly gradually increases, the distance between the adjacent floating bodies gradually increases, the lower parts of the floating bodies and the lower parts of the connecting bodies are both positioned under the water surface, and the upper parts of the floating bodies and the upper parts of the connecting bodies are both positioned on the water surface;
The side wall of the sampler body is provided with a chute, the floating body is clamped in the chute, the floating body can move along the length direction of the chute, and when the floating body moves along the length direction of the chute, the position of the floating body in the height direction of the sampler body is changed; the sliding chute is internally provided with a pushing part and an elastic part, one end of the elastic part is propped against the pushing part, the other end of the elastic part is propped against the floating body, when the floating body moves towards a direction away from the water inlet relative to the sampler body under the action of external force, the deformation of the elastic part is gradually increased, and the elastic part provides elastic force to reset the floating body under the action of no external force;
The floating body comprises a clamping part, a clamping groove is formed in the plug body, and the clamping part is positioned in the clamping groove when the floating assembly is in an initial state so as to limit the plug body; in the process that the float assembly moves from the initial state to the direction far away from the water inlet, the clamping part is gradually separated from the clamping groove, so that the limit on the plug body is relieved.
2. A sampling device for water quality testing according to claim 1, wherein: the top of sampler body has seted up the gas vent, the cock body is connected with the stay cord, the stay cord is in proper order passed through water inlet and gas vent are worn out.
3. A sampling device for water quality testing according to claim 1, wherein: the position of the pushing piece in the sliding groove along the length direction of the sliding groove is adjustable;
The pushing piece is in threaded connection with an extrusion piece, the extrusion piece and the pushing piece are matched to clamp the groove wall of the sliding groove, and the extrusion piece is enabled to rotate relative to the pushing piece and used for adjusting the size of a clamping space between the extrusion piece and the pushing piece, which is used for clamping the groove wall of the sliding groove.
4. A sampling device for water quality testing according to claim 1, wherein: the section of the connecting body is of a wavy structure, when the distance between the adjacent floating bodies is gradually increased, the connecting body is gradually stretched, when the distance between the adjacent floating bodies is gradually reduced, the connecting body is gradually compressed, and floaters on the water surface can be clamped by the wavy structure of the connecting body;
The connector has elasticity;
An adsorption layer for adsorbing an oil film is arranged on the surface of one side, deviating from the sampler body, of the connector.
5. A sampling device for water quality testing according to any one of claims 1-4, wherein: the plug body is provided with a collecting part, the plug body can sink into the water after entering the water, and the collecting part is used for collecting soil at the water.
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| CN109765075A (en) * | 2019-01-21 | 2019-05-17 | 郑州大学 | A shallow water sampler |
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| JP6018810B2 (en) * | 2012-06-15 | 2016-11-02 | 株式会社日立ハイテクノロジーズ | Plug opening and closing device and sample processing device |
| KR101783040B1 (en) * | 2017-03-29 | 2017-09-29 | 대한민국 | Floating Rope |
| CN210665231U (en) * | 2019-09-02 | 2020-06-02 | 南京华都环保设备有限公司 | Water quality sampling device with anti-blocking function for online analyzer |
| CN111665091B (en) * | 2020-07-10 | 2025-06-24 | 深圳衡伟环境技术有限公司 | A passive self-cleaning water filtration sampling device |
| CN111678737B (en) * | 2020-07-13 | 2021-05-18 | 兰州理工大学 | Water quality sampling and dissolved oxygen measuring instrument and sampling measurement method in constructed wetland matrix |
| CN112557099A (en) * | 2020-12-09 | 2021-03-26 | 中国地质科学院岩溶地质研究所 | Karst area field water sample collection system |
| KR102387405B1 (en) * | 2021-06-08 | 2022-04-18 | 주식회사 메이텍엔지니어링 | Non-impact plunger type water sampler to prevent inflow of suspended material |
| CN215622579U (en) * | 2021-12-23 | 2022-01-25 | 天津市滨海新区环境创新研究院 | Multifunctional water quality sampling and monitoring ship |
| CN114858528A (en) * | 2022-04-20 | 2022-08-05 | 浙江实朴检测技术服务有限公司 | Sampling device and sampling method for irrigation water heavy metal detection |
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| CN104913949A (en) * | 2015-05-19 | 2015-09-16 | 广西壮族自治区环境监测中心站 | River, lake and reservoir sediment cylindrical sampler |
| CN109765075A (en) * | 2019-01-21 | 2019-05-17 | 郑州大学 | A shallow water sampler |
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