CN214667924U

CN214667924U - River water quality sampling and online detection device

Info

Publication number: CN214667924U
Application number: CN202120551844.0U
Authority: CN
Inventors: 姚新强; 程文静; 王慧欣; 陈乐�; 王冰
Original assignee: Zhoukou Environmental Supervision Detachment
Current assignee: Zhoukou Environmental Supervision Detachment
Priority date: 2021-03-17
Filing date: 2021-03-17
Publication date: 2021-11-09
Anticipated expiration: 2031-03-17

Abstract

The utility model relates to a water environment monitoring facilities field has especially related to a river water sampling and on-line measuring device. The river water sampling and online detecting device comprises a sampling device and a water quality detecting device, wherein the sampling device comprises a shell, the shell is provided with a closed bin and a sampling bin which are separated from each other, a sampling pump is arranged in the closed bin, the wall of the sampling bin is provided with a water inlet, the water inlet forms a filtering hole or is provided with a filtering device, and the inlet of the sampling pump is communicated to the inside of the sampling bin; the water quality detection device is arranged on the sampling device and used for detecting the quality of the river water extracted by the sampling pump. The utility model discloses a river water sampling and on-line measuring device directly set up water quality testing device on sampling device, but the poor problem of river water quality sampling testing result accuracy is solved to the synchronism of greatly increased sample and detection.

Description

River water quality sampling and online detection device

Technical Field

The utility model relates to a water environment monitoring facilities field has especially related to a river water sampling and on-line measuring device.

Background

Sampling and detecting river water according to a certain frequency is an important measure for preventing river pollution. The traditional sampling and detecting mode is a mode of 'sampling-sample transferring-detecting', namely, a sampling process is separated from a detecting process. The sampling is divided into the sampling of river water at the edge of the river channel and the sampling of river water in the middle of the river channel. The river water sampling at the riverway side is mainly realized by manually filling at the bank, and the river water sampling in the middle of the riverway can be finished by utilizing a ship. In the sampling stage, the efficiency of the filling mode is low, and the filling mode inevitably causes disturbance of water flow on one hand, and the sampling depth is limited on the other hand, so that the problem that the consistency of the water quality of the sampled water and the water quality of a target river water source is poor is directly caused, and the sampling and the detection are asynchronous, so that the deviation of the detection result is further caused. Therefore, the traditional river water sampling detection mode has the problems of low efficiency and poor detection result accuracy.

To the problem that manual filling mode sample brought, application publication number CN109283020A, the specification of the patent application of name a river water sampler, application publication number CN110686935A, the specification of the patent application of name a sampling device for river course water treatment, and the specification of the patent of publication number CN211627076U, the name of a river water detection sampling device have disclosed corresponding solution respectively, sample through equipment such as pump promptly, deliver the technical scheme of sample position with the pump through the cantilever bar.

In order to solve the problem of asynchronous sampling and detection, the specification of the patent application with publication number CN108240919A and named as a river water multipoint sampling detection system and method provides a corresponding solution. This patent application proposes utilizing the water pump to directly pump the river of target location to an analysis center, real-time carries out detection and analysis to the river sample of extraction, but because its analysis center is established on the bank, and the distance with the sampling position is far away, and the synchronism is relatively poor, and the river sample still can have the problem of parameter distortion after long distance pipeline transport. And aquatic plants and other objects may exist in the environment at the sampling point, and if the objects are not filtered, the impurities can be extracted to influence the detection result; under the sampling point had set up the filter equipment condition, then debris are kept off at the filter equipment outside, can bring the resistance for the sample on the one hand, and on the other hand also can influence the quality of extraction water sample.

In conclusion, the problem of poor accuracy of detection results still exists in the current river water quality sampling detection.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a river water sampling and on-line measuring device to solve the poor problem of river water sampling testing result accuracy.

In order to solve the technical problem, the utility model discloses a river water sampling and on-line measuring device's technical scheme as follows: river water sampling and on-line measuring device includes:

the sampling device comprises a shell, the shell is provided with a closed bin and a sampling bin which are mutually separated, a sampling pump is arranged in the closed bin, the wall of the sampling bin is provided with a water inlet hole, the water inlet hole forms a filtering hole or the position of the water inlet hole is provided with a filtering device, and the inlet of the sampling pump is communicated to the sampling bin;

and the water quality detection device is arranged on the sampling device and is used for detecting the water quality of the river water extracted by the sampling pump.

Has the advantages that: the utility model discloses a river water sampling and on-line measuring device directly set up water quality testing device in sampling device, when carrying out water quality testing, the filtration pore or the filter equipment of taking a sample storehouse can carry out debris to the river of target position and filter, then directly extract sample river water sample from the storehouse of taking a sample through the sampling pump, the river water sample of extraction is further by water quality testing device synchronous detection, thereby but the synchronization of greatly increased sample and detection, solve the poor problem of river water quality sampling testing result accuracy.

Furthermore, a back flush jet device is arranged in the sampling bin, a back flush pump is arranged in the closed bin, and an outlet of the back flush pump is communicated with the back flush jet device. The backwashing jet flow device and the backwashing pump can realize backwashing of the sampling bin, so that the consistency of the taken river water sample and the target sampling river water is prevented from being influenced by impurities such as waterweeds attached to the outer wall of the sampling bin.

Furthermore, the water inlet holes are uniformly distributed on the wall of the surrounding bin of the sampling bin, the flow detection device is installed in the closed bin, and the flow detection device is provided with an inner probe positioned in the sampling bin and an outer probe positioned outside the sampling bin and used for controlling the back washing pump to be started for a set time when the difference value of the flow of river water inside and outside the sampling bin is detected to reach a set value. The flow detection device can control the operation of the backwash pump more timely and at more proper frequency, further ensures the consistency of the taken river water sample and the target sampling river water, and reduces the loss of the backwash pump.

Furthermore, the river water quality sampling and on-line detection device further comprises a support frame, the support frame comprises a pull rope, a cantilever type cantilever lever and a fixed pulley arranged on the cantilever lever, and the pull rope is used for bypassing the fixed pulley to hoist the sampling device. Ram and stay cord can be used to put in sampling device to the position in the middle of the river surface, can enlarge this the utility model discloses a river water sampling and on-line measuring device's sample detection scope.

Furthermore, the pull rope is provided with scales. Set up the sample depth that the scale can real-time indication sampling device on the stay cord.

Further, the pull cord is a flexible steel cord. The soft steel wire is used as the pull rope, so that the strength and the reliability are better, and the sampling device can be prevented from falling.

Further, the pulling rope is provided with a float. The buoy may be used to indicate the position of the sampling device at the surface of the river.

Furthermore, the buoy is sleeved on the pull rope in an empty mode and can move along the pull rope. The buoy is sleeved on the pull rope in an empty mode, so that the upper position and the lower position of the buoy are not influenced by the upper portion and the lower portion of the pull rope under the condition that the buoy can move along the pull rope, and the indication effect can be achieved conveniently.

Furthermore, a winding wheel is installed on the ram, and the pull rope is wound on the winding wheel. The winding wheel is helpful for arranging and winding and unwinding the pull rope, and the pull rope is prevented from being scattered.

Drawings

Fig. 1 is a first schematic view of an embodiment of a river water quality sampling and online detection device according to the present invention;

FIG. 2 is a second schematic view of an embodiment of the river water quality sampling and on-line detection device of the present invention;

FIG. 3 is a sectional view of the water quality detecting apparatus.

Description of reference numerals: 101. A support frame; 11. a ram; 12. pulling a rope; 13. a fixed pulley; 14. a winding wheel; 15. a crank; 16. a float; 102. a sampling device; 21. a housing; 211. sealing the bin; 212. sampling a bin; 24. A filter screen; 25. a mother pipe; 26. a spray head; 27. a flow detection device; 271. an inner probe; 272. an outer probe; 103. a water quality detection device; 301 a detection chamber; 302. detecting a probe; 303. a housing; 304. and (5) discharging a water pipe.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the application, i.e., the embodiments described are only a subset of, and not all embodiments of the application. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present application without making any creative effort, shall fall within the protection scope of the present application.

It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The features and properties of the present application are described in further detail below with reference to examples.

The utility model discloses a river water sampling and on-line measuring device's concrete embodiment:

as shown in fig. 1 and 2, the river water sampling and on-line detection device mainly comprises a support frame 101, a sampling device 102, and a water quality detection device 103.

The support frame 101 includes a lever 11 and a pull rope 12 as shown in fig. 1 and 2. The ram 11 is a cantilever lever, one end (suspended end) of which is provided with a fixed pulley 13, the other end is provided with a winding wheel 14, the winding wheel 14 is provided with a crank 15, the pull rope 12 is wound on the winding wheel 14, and the winding wheel 14 is rotated through the crank 15, so that the pull rope 12 can be wound and unwound. In this embodiment, the pull cord 12 is made of a flexible steel wire to ensure a certain strength, and the pull cord 12 is provided with a scale by which the length of the paid-out portion of the pull cord 12 can be read. The other end of the pull rope 12 is suspended after passing around the fixed pulley 13 and is used for connecting the sampling device 102. In this embodiment, the length of the ram 11 is determined, so that the river depth of the sampling device 102 can be obtained by directly reading the scale on the rope 12 and subtracting the length of the ram 11 and the distance from the river surface. Of course, in other embodiments, the ram 11 may be a telescopic structure, that is, the length thereof may be variable, in this case, in order to still be able to read the river depth where the sampling device 102 is located, the length of the telescopic section of the ram 11 may be preset, and on the basis, the length of the corresponding telescopic section of the ram 11 may be increased or decreased. In other embodiments, the material of the pull rope 12 may also be a nylon rope, which only needs to have certain strength and is not easy to break.

In order to visually observe the position of the sampling device 102 on the surface of the river water (for example, the position of the sampling device 102 relative to the river bank), the pull rope is provided with a buoy 16, the buoy 16 is freely sleeved on the pull rope 12, and when the pull rope 12 continues to descend under the action of the gravity of the sampling device 102 after contacting the water surface, the buoy 16 can move relative to the pull rope 12, namely, the position of the buoy 16 relative to the pull rope 12 can be changed, so that the descending of the sampling device 102 is not influenced. Of course, in other embodiments, the position of the buoy 16 on the pull-cord 12 may also be calculated by a preset lowering depth of the sampling device 102, in which case it is also possible for the buoy 16 to be fixed to the pull-cord 12.

The sampling device 102 comprises a shell 21, wherein a closed bin 211 and a sampling bin 212 are arranged in the shell 21, the closed bin 211 and the sampling bin 212 are separated by a partition plate, a sampling pump and a back flush pump are arranged in the closed bin 211, the sampling pump is used for pumping a river water sample from a target water source, a water inlet of the sampling pump is located in the sampling bin 212, and a water outlet of the sampling pump is located in a detection cavity arranged in a water quality detection device. The sampling pump is specifically a diaphragm pump because the diaphragm pump has the characteristics of small volume and large flow; the sampling chamber 212 has an open structure, and a water inlet is formed in a wall of the chamber, which is specifically formed by the filter screen 24 in this embodiment, and the water inlet is directly formed in a hole of the filter screen 24. Of course, in other embodiments, the water inlet holes and the corresponding filtering devices may be disposed on each surface of the circumference of the sampling bin, and the filtering devices specifically adopt filter screens. The filtering device is used for filtering waterweeds in the riverbed and blocking impact and loss of silt in the water flow to the sampling device 102 and the water quality detection device 103, and meanwhile, the river water sample extracted by the sampling pump can be ensured to be consistent with river water at a target position.

In order to avoid the filter device from being blocked, a backwashing jet device is arranged in the sampling bin 212, the backwashing jet device comprises a main pipeline 25 and spray heads 26 which are arranged on the main pipeline 25 and extend in a radiating mode towards the periphery, the main pipeline 25 is communicated with a backwashing pump, when the backwashing operation of the sampling bin 212 is needed, the backwashing pump pumps water from the upper side of the river sampling device and performs backwashing on the filter device of the sampling bin 212, specifically, a soft water inlet pipe is connected with a water inlet of the backwashing pump, and a floating body is arranged on the soft water inlet pipe to ensure the water pumping position, which is used for ensuring the cleanliness of pumped water. In order to realize the automatic control of the backwashing pump, a flow detection device 27 is arranged in the closed bin, the flow detection device 27 is provided with an inner probe 271 positioned in the sampling bin and an outer probe 272 positioned outside the sampling bin, and the flow detection device is used for controlling the backwashing pump to be started for a set time when detecting that the difference value of the flow of river water inside and outside the sampling bin reaches a set value. The inner probe and the outer probe can adopt two flow sensors, and when the difference between the flow speed of water flow flowing outside the sampling bin and the flow speed of water flow flowing inside the sampling bin is detected to be overlarge, the sampling bin is blocked. For example, when the difference between the flow rate of the inner probe and the flow rate of the outer probe is detected to be greater than X (X is specifically selected according to the water flow turbulence level of a specific river, etc.), the backwash pump is operated for 30 seconds.

The water quality detection device 103 is arranged on the sampling device 102, and as shown in fig. 3, the water quality detection device is provided with a cylindrical shell 303 and a detection probe 302 arranged in the shell 303, the lower end of the shell 303 is provided with a detection cavity 301, the outlet of the sampling pump is connected into the detection cavity 301, the detection cavity 301 is also provided with a water outlet pipe 304, the lower end of the water outlet pipe 304 is connected with the upper wall of the detection cavity 301, and the upper end is positioned above the detection cavity 301 and communicated to the outside of the detection cavity 301; the detection probe 302 is used for detecting water quality, the lower end of the detection probe extends into the detection cavity 301, and the upper end of the detection probe is fixed.

The utility model discloses a this river water sampling and on-line measuring device's working process as follows: the method comprises the following steps that a sampling device 102 and a water quality detection device 103 are thrown in a shore place or a ship of a target river by using a ram 11 of a support frame 101, the water inlet depth of the sampling device 102 and the water quality detection device 103 is read through the scale of a pull rope 12 in the throwing process, the plane positions of the sampling device 102 and the water quality detection device 103 are observed through a buoy 16, when the sampling device 102 and the water quality detection device 103 are put in place, a sampling pump works to extract a river water sample from a sampling bin 212 to the water quality detection device 103, and the water quality detection device 103 synchronously detects the river water sample, so that a detection result is obtained; in the operation process of the device, a required power supply can be led underwater from a shore or a ship through an electric wire, and a waterproof joint is adopted at a joint. After completing the sampling test of one position, the next target position can be sampled and tested by adjusting the position of the sampling device 102. In the detection process, when the flow detection device 27 detects that the filtering device of the sampling bin 272 is blocked, the backwashing pump is started, and after the backwashing operation is completed, the sampling detection operation is performed.

The above description is only a preferred embodiment of the present application, and not intended to limit the present application, the scope of the present application is defined by the appended claims, and all changes in equivalent structure made by using the contents of the specification and the drawings of the present application should be considered as being included in the scope of the present application.

Claims

1. River water sampling and on-line measuring device, its characterized in that includes:

the sampling device (102), the sampling device (102) includes a shell (21), the shell (21) has a closed bin (211) and a sampling bin (212) which are separated from each other, a sampling pump is arranged in the closed bin (211), a water inlet hole is arranged on the bin wall of the sampling bin (212), the water inlet hole forms a filtering hole or a filtering device is arranged at the position of the water inlet hole, and the inlet of the sampling pump is communicated to the sampling bin (212);

and the water quality detection device (103) is arranged on the sampling device (102) and is used for detecting the water quality of the river water pumped by the sampling pump.

2. The river water sampling and online detecting device according to claim 1, wherein a back flush jet device is arranged in the sampling bin (212), a back flush pump is arranged in the closed bin (211), and an outlet of the back flush pump is communicated with the back flush jet device.

3. The river water sampling and online detecting device according to claim 2, wherein the water inlet holes are formed in the wall of the sampling bin (212), the flow detecting device (27) is installed in the closed bin (211), and the flow detecting device (27) is provided with an inner probe (271) positioned in the sampling bin and an outer probe (272) positioned outside the sampling bin and is used for controlling the back washing pump to be started for a set time when the difference value of the flow of river water inside and outside the sampling bin (212) is detected to reach a set value.

4. The river water sampling and online detecting device according to any one of claims 1 to 3, further comprising a support frame (101), wherein the support frame (101) comprises a pull rope (12), a cantilever-type cantilever (11) and a fixed pulley (13) arranged on the cantilever, and the pull rope (12) is used for passing around the fixed pulley (13) to hoist the sampling device (102).

5. The river water sampling and online detecting device according to claim 4, wherein scales are arranged on the pull rope (12).

6. The river water quality sampling and online detecting device according to claim 5, wherein the pull rope (12) is a soft steel wire.

7. The river water sampling and online detecting device according to claim 4, wherein the pull rope (12) is provided with a buoy (16).

8. The river water quality sampling and online detecting device according to claim 7, wherein the buoy (16) is freely sleeved on the pull rope (12) and can move along the pull rope (12).

9. The river water quality sampling and online detecting device according to claim 4, wherein a winding wheel (14) is installed on the ram (11), and the pull rope (12) is wound on the winding wheel (14).