Anti-blocking sampling device for on-line automatic monitoring of riverway

Abstract

The utility model discloses an anti-blocking sampling device for on-line automatic monitoring of a river channel, and belongs to the related technical field of on-line automatic monitoring of water quality of the river channel. The water taking screen is arranged at the tail end of the sampling pipe group and is used for intercepting foreign matters in water; and the cleaning and brushing assembly is fixedly mounted relative to the water taking screen and used for cleaning and brushing the water taking screen. According to the utility model, the flow characteristic of river water is fully utilized to drive the propeller so as to drive the rotating brush to uninterruptedly clean and brush the water taking screen, so that the screen is prevented from being blocked by impurities, attached algae and the like in water, and the condition that the taken water sample meets the admission condition of entering a subsequent monitoring system is ensured. According to the utility model, a water sample meeting conditions can be taken at any time, the timeliness, accuracy and stability of online monitoring data are guaranteed, and the problem that the timeliness and accuracy of monitoring are influenced due to the fact that a river water quality online automatic monitoring system in the prior art is easily blocked by foreign matters is solved.

Description

Technical Field

[0001] The utility model relates to the technical field related to online automatic monitoring of river water quality, and more specifically, particularly relates to an anti-clogging sampling device for online automatic monitoring of rivers. Background Art

[0002] At present, the online automatic monitoring system for river water quality mostly adopts fixed (the whole monitoring system is fixed relative to the river) and grid interception (grids are set to intercept foreign objects) sampling structure design. With the changes in the peak, dry and normal water periods of the river, the river water level and impurities in the water are constantly changing. It is easy for the sampling device to be installed higher than the river water level and unable to sample, or impurities in the river water block the grid and make it impossible to take water, or fine gravel in the river water blocks the sampling pipeline, etc., resulting in no monitoring data or equipment damage.

[0003] Once the above problems occur, manual removal of foreign matter is often required, which is not only time-consuming and labor-intensive, but also seriously affects the timeliness, stability and accuracy of the online automatic monitoring system. Utility Model Content

[0004] 1. Technical issues

[0005] In summary, how to solve the problem that the online automatic monitoring system of river water quality in the prior art is prone to clogging by foreign matter and thus affects the timeliness and accuracy of monitoring has become an urgent problem to be solved by technical personnel in this field.

[0006] (II) Technical solution

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] The utility model provides an anti-clogging sampling device for online automatic monitoring of a river. In the utility model, the anti-clogging sampling device for online automatic monitoring of a river comprises:

[0009] A sampling tube set connected to the online monitoring device and used for delivering water samples to the online monitoring device;

[0010] A water intake screen disposed at the end of the sampling tube set and used to intercept foreign matter in the water;

[0011] A cleaning component is fixedly installed relative to the water intake screen and is used to clean the water intake screen. The cleaning component includes a rotating brush and a propeller. The propeller is rotatably fixed relative to the water intake screen. The propeller is power-connected to the rotating brush and is used to drive the rotating brush to rotate. The rotating brush can contact the surface of the water intake screen and is used to clean the water intake screen during rotation.

[0012] Preferably, in the anti-clogging sampling device for on-line automatic monitoring of river channels provided by the present utility model, the sampling pipe group includes a sampling pipe and a flexible water pipe. The sampling pipe is arranged at one end of the flexible water pipe, and the other end of the flexible water pipe is connected to on-line monitoring equipment. The water intake screen is arranged at the end of the sampling pipe.

[0013] Preferably, in the anti-clogging sampling device for on-line automatic monitoring of river channels provided by the present utility model, a sleeve is sleeved outside the sampling pipe, and the propeller is rotatably installed on the sleeve.

[0014] Preferably, in the anti-clogging sampling device for on-line automatic monitoring of river channels provided by the present utility model, a fixing frame is arranged at one end of the sleeve corresponding to the sampling pipe where the water intake screen is arranged. A connecting shaft is arranged on the fixing frame. One end of the connecting shaft outside the fixing frame is provided with the propeller, and one end of the connecting shaft inside the fixing frame is provided with the rotary brush.

[0015] Preferably, in the anti-clogging sampling device for on-line automatic monitoring of river channels provided by the present utility model, the rotary brush includes a rotary brush body. One side of the rotary brush body is provided with bristles. The connecting shaft is fixedly connected to the rotation center on the other side of the rotary brush body, and the bristles are in contact with the surface of the water intake screen.

[0016] Preferably, in the anti-clogging sampling device for on-line automatic monitoring of river channels provided by the present utility model, the cleaning area formed by the rotation of the bristles covers the water intake screen.

[0017] Preferably, in the anti-clogging sampling device for on-line automatic monitoring of river channels provided by the present utility model, the sleeve is of a cylindrical structure, the sampling pipe is of a circular pipe structure. The sampling pipe is arranged inside the sleeve and coaxially arranged with the sleeve, and the connecting shaft is coaxially arranged with the sleeve.

[0018] Preferably, in the anti-clogging sampling device for on-line automatic monitoring of river channels provided by the present utility model, an installation sleeve coaxially arranged with the sleeve is arranged on the fixing frame, and the connecting shaft is rotatably arranged on the installation sleeve.

[0019] Preferably, in the anti-clogging sampling device for on-line automatic monitoring of river channels provided by the present utility model, an airbag is arranged relative to the water intake screen. The airbag can provide buoyancy to the water intake screen to make the water intake screen float below the water surface.

[0020] Preferably, in the anti-clogging sampling device for on-line automatic monitoring of river channels provided by the present utility model, the airbag is detachably installed relative to the water intake screen; and the number of the airbags arranged is adjustable.

[0021] (3) Beneficial effects

[0022] As can be seen from the above structural design, the present utility model provides a clogging prevention sampling device for on-line automatic monitoring of river channels. The device includes: a sampling pipe group connected to an on-line monitoring device and used for conveying water samples to the on-line monitoring device; a water intake screen disposed at the end of the sampling pipe group and used for intercepting foreign objects in water; a cleaning component fixedly installed relative to the water intake screen and used for cleaning the water intake screen. The cleaning component includes a rotating brush and a propeller. The propeller is rotatably and fixedly installed relative to the water intake screen. The propeller is connected to the rotating brush and used for driving the rotating brush to rotate. The rotating brush can contact the surface of the water intake screen and is used for cleaning the water intake screen during rotation. The present utility model makes full use of the flowing characteristics of river water to drive the propeller to drive the rotating brush, continuously clean the water intake screen, avoid clogging of the screen by impurities and attached algae in water, and ensure that the obtained water sample meets the access conditions for entering the subsequent monitoring system. Through the above structural optimization, the present utility model can not only obtain qualified water samples at any time, ensure the timeliness, accuracy and stability of on-line monitoring data, solve the problems of easy foreign object clogging and affecting the timeliness and accuracy of monitoring existing in the on-line automatic monitoring system of river water quality in the prior art, but also avoid a large amount of investment in manpower and material resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The schematic diagrams in the specification forming a part of the present application are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. Among them:

[0024] Figure 1 is a schematic structural diagram of the clogging prevention sampling device for on-line automatic monitoring of river channels in an embodiment of the present utility model;

[0025] Figure 2 is a front structural diagram of a fixing frame in an embodiment of the present utility model;

[0026] Figure 3 is a front structural diagram of a fixing frame in another embodiment of the present utility model;

[0027] Figure 4 is a schematic structural diagram when the cleaning component is installed on the fixing frame in an embodiment of the present utility model.

[0028] In Figures 1 to 4 , the corresponding relationship between the component names and the reference numerals is as follows:

[0029] Water intake screen 1, rotating brush 2, propeller 3, sampling pipe 4, flexible water pipe 5, sleeve 6, fixing frame 7, coupling shaft 8, mounting sleeve 9, airbag 10. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] The present utility model will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments. Each example is provided by way of explanation of the present utility model rather than a limitation thereof. In fact, those skilled in the art will appreciate that modifications and variations can be made to the present utility model without departing from the scope or spirit thereof. For example, features shown or described as part of one embodiment can be used in another embodiment to yield yet another embodiment. Therefore, it is desirable that the present utility model encompass such modifications and variations that fall within the scope of the appended claims and their equivalents.

[0031] In the description of the present utility model, the orientation or positional relationship indicated by terms such as "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model rather than requiring the present utility model to be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. The terms "connected" and "coupled" used in the present utility model should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection; it can be directly connected or indirectly connected through an intermediate component. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0032] Please refer to Figures 1 to 4 , wherein, Figure 1 is a schematic structural view of a clogging prevention sampling device for on-line automatic monitoring of a river channel in an embodiment of the present utility model; Figure 2 is a front structural view of a fixing frame in an embodiment of the present utility model; Figure 3 is a front structural view of a fixing frame in another embodiment of the present utility model; Figure 4 is a schematic structural view when a cleaning component is installed on the fixing frame in an embodiment of the present utility model.

[0033] The present utility model belongs to the technical field related to on-line automatic monitoring of river water quality, and more specifically, it is a clogging prevention sampling device for on-line automatic monitoring of a river channel. To solve the problems of the prior art, the present utility model proposes the following two core improvements: 1. The rotation of the propeller 3 is driven by the flow of river water, so that the rotating brush 2 is driven by the coupling shaft 8 to continuously clean the water intake screen 1, ensuring that there is no foreign object blocking the water intake screen 1 and preventing water intake; 2. When the river water level changes, the airbag 10 can drive the water intake device to float up and down with the water level, ensuring that water intake is not affected by the water level change.

[0034] Compared with the fixed installation of the traditional sampling device, the utility model utilizes the characteristic of the airbag 10 floating on the water surface. The airbag 10 changes up and down with the height of the river water level, which can ensure that the sampling device is located below the water surface, and there will be no problem that the sampling device cannot be sampled after it is exposed to the water surface due to the dry season or the small amount of river water. In addition, the simple grid-type sampling device used in the prior art uses a grid to intercept foreign matter in the water. If the grid gap is too large, the interception effect is not ideal, and the water sample contains impurities, which affects the detection results. If the grid gap is too small, it is easy to be blocked by impurities in the river water, and the frequency of manual cleaning is high, which will affect the online monitoring efficiency. Through the structural design of the above two core points, the utility model can make full use of the fluidity of the river water to drive the propeller 3, thereby driving the rotating brush 2 to continuously clean the grid of the water intake screen 1, which can avoid the blockage of impurities on the water intake device (grid) and ensure that the water intake device can operate automatically and continuously for a long time.

[0035] The anti-clogging sampling device for online automatic monitoring of a river provided by the utility model specifically comprises:

[0036] 1. Online monitoring equipment: The online monitoring equipment uses existing equipment, which can take samples of river water for analysis.

[0037] 2. A sampling tube set connected to the online monitoring equipment and used to transport water samples to the online monitoring equipment.

[0038] The sampling tube group is divided into two parts, namely the sampling tube 4 and the soft water pipe 5. The sampling tube 4 needs to be set below the water surface so that the river water can enter the water inlet pipe through the sampling tube 4. The water inlet pipe is a pipe structure with connection properties. The sampling tube 4 is set at one end of the soft water pipe 5, and the other end of the soft water pipe 5 is connected to the online monitoring equipment. After the river water enters the sampling tube 4, it is transported to the online monitoring equipment through the soft water pipe 5.

[0039] In a preferred embodiment of the utility model, the sampling tube 4 is designed as a round tube structure, and the sampling tube 4 is made of hard material, so that the sampling tube 4 will not be deformed by the influence of water flow. Specifically, the sampling tube 4 can adopt a metal round tube structure, or a polymer material round tube. In order to facilitate the laying of pipelines, the soft water pipe 5 adopts a hose structure. Furthermore, the length of the soft water pipe 5 is adjustable (for example, a corrugated tube structure can be adopted in part of the entire soft water pipe 5, or the overall length of the soft water pipe 5 can be increased, and the excess part can be stored in a coil), and the soft water pipe 5 can also adopt a transparent pipeline structure design (the entire water inlet pipe can be a transparent tube, or a part can be a transparent tube), so as to facilitate the observation of the sampled water flow in the soft water pipe 5.

[0040] The sampling tube 4 and the soft water pipe 5 can be butted against each other by a pipe joint, or can be directly connected to the soft water pipe 5 and the sampling tube 4 by interference fitting.

[0041] 3. A water intake screen 1 provided at the end of the sampling pipe group for intercepting foreign objects in water.

[0042] The water intake screen 1 is provided at the end of the sampling pipe 4. One end of the sampling pipe 4 is connected to the flexible water pipe 5, and the other end of the sampling pipe 4, i.e., the end, is provided with the water intake screen 1.

[0043] The water intake screen 1 is preferably made of a rigid material (which can be a steel mesh structure or a plastic mesh structure), and it can be fixedly arranged on the sampling pipe 4 by means of threaded connection, snap connection or gluing, etc. The water intake screen 1 is a planar mesh structure, which can be flush with the end plane of the sampling pipe 4 or protrude outward relative to the end plane of the sampling pipe 4. In the present utility model, the optimal structural design is flush with the end plane of the sampling pipe 4.

[0044] In the present utility model, the surface of the water intake screen 1 is evenly distributed with mesh holes. The water intake screen 1 has a variety of specifications and models. The structural dimensions of each water intake screen 1 are the same, and the difference lies in the size of the mesh hole diameter. During actual use, a suitable water intake screen 1 can be selected according to the sampling requirements and different water area environments for use.

[0045] 4. A sleeve 6 for being arranged outside the sampling pipe 4.

[0046] In the present utility model, the sleeve 6 has two functions: Function 1, to provide structural protection for the sampling pipe 4; Function 2, to be used for the installation of other component structures in the present utility model. The sleeve 6 is preferably a plastic sleeve 6. The sleeve 6 adopts a cylindrical structure and is fixedly sleeved outside the sampling pipe 4. In the present utility model, the sleeve 6 is provided with a flexible sleeve (such as a rubber sleeve) corresponding to the end where the sampling pipe 4 is connected to the flexible water pipe 5 for realizing flexible protection of the connection between the sampling pipe 4 and the flexible water pipe 5. The sleeve 6 is of a cylindrical structure, the sampling pipe 4 is of a circular pipe structure, the sampling pipe 4 is arranged inside the sleeve 6 and is coaxially arranged with the sleeve 6, and the coupling shaft 8 is coaxially arranged with the sleeve 6.

[0047] 5. A cleaning component fixedly installed relative to the water intake screen 1 for cleaning the water intake screen 1.

[0048] The function of the cleaning component is to clean the water intake screen 1. Therefore, when designing the cleaning component in the present utility model, the water intake screen 1 is used as a reference standard for design, that is, it is fixedly arranged relative to the water intake screen 1, so that the water intake screen 1 can be reliably and stably cleaned during the working process.

[0049] Specifically, the cleaning component includes a rotary brush 2 and a propeller 3. The propeller 3 is rotatably and fixedly installed relative to the water intake screen 1 (the water intake screen 1, the sampling pipe 4, and the sleeve 6 are relatively fixed to each other. Therefore, in the present utility model, installing the cleaning component on the sleeve 6 can achieve stable and reliable cleaning of the water intake screen 1). The propeller 3 is power-connected to the rotary brush 2 and is used to drive the rotary brush 2 to rotate. The rotary brush 2 can contact the surface of the water intake screen 1 and is used to clean the water intake screen 1 during rotation.

[0050] In order to install the cleaning component on the sleeve 6, the present utility model is provided with a fixing frame 7 at one end of the sleeve 6 corresponding to the sampling pipe 4 where the water intake screen 1 is located. A connecting shaft 8 is rotatably arranged on the fixing frame 7. One end of the connecting shaft 8 located outside the fixing frame 7 is provided with a propeller 3, and one end of the connecting shaft 8 located inside the fixing frame 7 is provided with a rotary brush 2.

[0051] As Figure 3 shown, in the present utility model, while the fixing frame 7 has the function of installing the connecting shaft 8 (on which the propeller 3 and the rotary brush 2 are arranged), it should also minimize the obstruction of water quality impurities, waterweeds, etc. Therefore, in the present utility model, the fixing frame 7 is made of a metal structure. Specifically, the fixing frame 7 includes two U-shaped structural units. The two U-shaped structural units are symmetrically spaced and fixedly installed relative to the sleeve 6. An installation sleeve 9 is arranged between the two U-shaped structural units, and then the connecting shaft 8 is installed. Of course, based on the above structure, a reinforcement structure (such as a reinforcement beam, a reinforcement rod, etc.) can also be arranged between the two U-shaped structural units to ensure the structural strength of the fixing frame 7.

[0052] In addition to the above structure, the fixing frame 7 can also adopt other structural forms. Please refer to Figure 2 , specifically, the fixing frame 7 is made of a metal structure. The structure of the fixing frame 7 is similar to that of an electric fan grille. While ensuring its structural strength, its hollow area is increased as much as possible to ensure sufficient water flow for sampling. In a specific embodiment of the present utility model, the fixing frame 7 includes a plurality of U-shaped metal spokes. The metal spokes are arranged at equal intervals around a point to form a metal cage structure. One end of the fixing frame 7 is fixed to the sleeve 6, and the connection method can be arbitrary as long as the fixing frame 7 can be stably installed on the sleeve 6. For example, a ring-shaped docking structure is arranged at one end of the fixing frame 7 that needs to be connected to the sleeve 6. The docking structure can be designed as a flange structure. The fixing frame 7 and the sleeve 6 are installed by a flange structure, or adhesively fixed, or internal threads are arranged on the inner side of the docking structure, and external threads are arranged on the outside of the sleeve 6. The fixing frame 7 and the sleeve 6 are connected by threads.

[0053] At the other end of the fixed bracket 7, a coupling shaft 8 is used for installation. The coupling shaft 8 is a connecting member that realizes the power connection between the propeller 3 and the rotary brush 2. The coupling shaft 8 is a metal round shaft, and the coupling shaft 8 needs to be fixedly and rotatably installed on the fixed bracket 7. In order to ensure the smoothness of the rotation of the coupling shaft 8 and the stability of the installation of the coupling shaft 8 on the fixed bracket 7, the present utility model proposes the following structural optimizations for the fixed bracket 7: At the position where the coupling shaft 8 needs to be installed on the fixed bracket 7 (for example, at the centroid of the fixed bracket 7, and ensure that the coupling shaft 8 can be coaxially arranged with the sampling pipe 4 after being installed on the fixed bracket 7), an installation sleeve 9 is provided. At both ends of the installation sleeve 9, a bearing structure and a bearing cover are provided. After the coupling shaft 8 is installed in the installation sleeve 9, a limiting sleeve can be further provided on the coupling shaft 8. A threaded hole is provided on the limiting sleeve, and a limiting tightening bolt is installed through the threaded hole. After the limiting tightening bolt abuts against the coupling shaft 8, the fixed installation of the limiting sleeve can be realized. Two limiting sleeves are provided at both ends of the installation sleeve 9 respectively, so that the axial limit of the coupling shaft 8 on the fixed part can be realized, and the coupling shaft 8 can be prevented from disengaging from the fixed bracket 7. Installing the coupling shaft 8 on the fixed bracket 7 through the installation sleeve 9 can improve the reliability and stability of the assembly of the coupling shaft 8 on the fixed bracket 7.

[0054] The propeller 3 can be a two-blade propeller (i.e., provided with two propeller blades), or a three-blade propeller (i.e., provided with three propeller blades). The propeller 3 is fixedly arranged at one end of the coupling shaft 8 outside the fixed bracket 7, and its installation method is arbitrary. Any detachable fixed installation method that can realize the propeller 3 on the coupling shaft 8 can be applied to the present utility model. In the present utility model, the propeller 3 can be a metal structure, that is, the propeller 3 includes an installation body, and the installation body is a tubular structure that can be sleeved on the shaft end of the coupling shaft 8 to realize the fixation of the propeller 3. Blades are fixedly arranged on the installation body (both the blades and the installation body are metal components, and the blades are welded on the installation body). The propeller 3 can also be a polymer material structure (commonly known as plastic), and the propeller 3 adopts an integral structure.

[0055] The rotary brush 2 includes a rotary brush body, and bristles are provided on one side of the rotary brush body. The coupling shaft 8 is fixedly connected to the rotation center on the other side of the rotary brush body, and the bristles are in contact with the surface of the water intake screen 1. In the present utility model, the rotary brush body can adopt a long strip structure or a three-prong structure. A sleeve structure is provided at the rotation center position of the rotary brush body for installation on the coupling shaft 8. The rotary brush 2 is arranged inside the fixed bracket 7, and bristles are provided on the side of the rotary brush 2 facing the water intake screen 1. The rotary brush 2 can rotate with the propeller 3, and the rotation of the rotary brush 2 can realize the cleaning of the water intake screen 1. Further, the cleaning area formed by the rotation of the bristles covers the water intake screen 1.

[0056] The anti-clogging sampling device for on-line automatic monitoring of river channels provided by the utility model can effectively solve the problem that foreign objects are easily blocked in the existing monitoring system, thereby ensuring that the on-line automatic monitoring system can take samples without obstacles at any time. The specific operation mode of the utility model is as follows:

[0057] 1. When the flowing river water impacts the propeller 3, the propeller 3 rotates and drives the rotating brush 2 to rotate through the coupling shaft 8, so as to achieve the purpose of continuously cleaning the water intake screen 1, ensuring that fine gravel, water plants, attached moss and other foreign impurities in the river water cannot block the intake screen, thereby ensuring that the sampling device obtains the target water sample required by the subsequent on-line monitoring equipment.

[0058] 2. When the water level of the river channel changes, the airbag 10 at the top of the device drives the sampling device to change up and down with the river water level, and the sampling device can always be submerged below the water surface (5-10 cm below the water surface), ensuring that the target water sample can be obtained at any time.

[0059] In the running state of the anti-clogging sampling device for on-line automatic monitoring of river channels provided by the utility model in practical application: the flowing river water drives the propeller 3 to rotate, the water flow will flow through the spiral rotation and then enter the water intake screen 1 through the fixing frame 7, and finally the sampling pipe 4 takes samples; during the flowing process of the river water, the propeller 3 rotates under the action of the flowing river water, the spiral rotation drives the rotating brush 2 to rotate at the same frequency through the coupling shaft 8, the rotating brush 2 contacts the water intake screen 1, and the water intake screen 1 can sweep away the foreign objects attached to its surface under the continuous rotation and cleaning of the rotating brush 2. The utility model can realize the automatic cleaning of the water intake screen 1, which not only ensures that the river water entering the water intake screen 1 does not contain impurities affecting the subsequent on-line monitoring, but also ensures that the water intake screen 1 is not blocked by impurities and algae in the river water. The water sample entering the water intake screen 1 enters the subsequent on-line monitoring equipment along the sampling pipe 4 and the flexible water pipe 5, thereby realizing the timeliness, accuracy and stability of on-line monitoring of river water related data.

[0060] As another key improvement of the utility model, an airbag 10 is arranged at the top of the device, and the airbag 10 provides buoyancy. No matter whether the river channel is in the flood, normal or dry season, the airbag 10 can float on the water surface, thereby driving the sleeve 6 to be suspended below the water surface, ensuring that a sufficient amount of water sample enters the sampling pipe 4 and the flexible water pipe 5 through the water intake screen 1, and then enters the subsequent on-line monitoring equipment.

[0061] Specifically, the utility model is provided with an airbag 10 relative to the water intake screen 1, that is, the airbag 10 is fixedly arranged on the sleeve 6, so as to provide buoyancy for the sleeve 6 and the sampling pipe 4, the water intake screen 1, the cleaning component, etc. installed in the sleeve 6. Through the limited structural design of the designer, the buoyancy required for the sampling pipe 4 and other structures to suspend below the water surface can be calculated according to the overall weight of the structure, and then the airbag 10 can be designed according to the required buoyancy. The utility model is provided with an airbag 10, and the airbag 10 can provide buoyancy for the water intake screen 1 to make the water intake screen 1 suspend below the water surface. Further, the airbag 10 is detachably installed relative to the water intake screen 1; and the number of the airbags 10 is adjustable. The utility model can be provided with a hanging rack on the outer side of the sleeve 6. The airbag 10 adopts a strip-shaped structure design, and the airbag 10 can be inserted into the hanging rack, so as to realize the fixed installation outside the sleeve 6. The hanging rack is arranged at the top of the whole device body. A plurality of hanging racks can be arranged, that is, they can be arranged along the axial direction of the sleeve 6 or can be arranged around the axis of the sleeve 6. A plurality of airbags 10 are provided, and the number of the airbags 10 arranged on the device can be adjusted according to the actual situation to ensure that the device suspends in the water without sinking to the bottom.

[0062] In addition, the utility model can also be provided with an anchor structure. The anchor structure is arranged at the bottom of the sleeve 6, and the utility model is fixed by the anchor structure to prevent the utility model from being washed away by the water flow.

[0063] The utility model has wide application, large applicable range, strong feasibility, simple operation, strong stability, high detection accuracy, can also greatly reduce manual operation, further improve work efficiency and reduce work costs.

[0064] Through the above structural design, compared with the existing structure, the anti-blocking sampling device for river online automatic monitoring provided by the utility model has at least the following beneficial effects:

[0065] First, the sampling position is not fixed at a certain point. Therefore, samples can be taken at any time regardless of the wet, normal, or dry seasons of the river.

[0066] Second, the rotating brush 2 device continuously cleans the water intake screen 1. Therefore, the authenticity of the taken water samples is strong, and the accuracy and precision of the monitored data are further improved.

[0067] Third, there is no need for manual intervention to clean, maintain, move the position, etc. of the sampling device.

[0068] As can be seen from the above structural design, the present utility model provides a clogging-proof sampling device for on-line automatic monitoring of river channels. In the present utility model, the clogging-proof sampling device for on-line automatic monitoring of river channels includes: a sampling pipe group connected to an on-line monitoring device and used for conveying water samples to the on-line monitoring device; a water intake screen 1 arranged at the end of the sampling pipe group and used for intercepting foreign matters in water; a cleaning component fixedly installed relative to the water intake screen 1 and used for cleaning the water intake screen 1. The cleaning component includes a rotating brush 2 and a propeller 3. The propeller 3 is rotatably and fixedly installed relative to the water intake screen 1. The propeller 3 is power-connected to the rotating brush 2 and used for driving the rotating brush 2 to rotate. The rotating brush 2 can contact the surface of the water intake screen 1 and is used for cleaning the water intake screen 1 during rotation.

[0069] Aiming at the defects of the existing on-line monitoring sampling device, such as being prone to being far away from the water sample (the water level drops during the dry season, resulting in the device being far away from the water sample and unable to take samples) and being easily clogged, which lead to insufficient timeliness and accuracy of monitoring data, the present utility model has carried out targeted optimization in terms of structure: 1. Make full use of the characteristic that the airbag 10 floats on the water surface to ensure that the sampling device located below the airbag 10 is always submerged below the water surface, and the water sample can be taken at any time; 2. Make full use of the flowing characteristics of the river water to drive the propeller 3, thereby driving the rotating brush 2 to continuously clean the water intake screen 1, avoiding the blockage of the screen by impurities and attached algae in the water, and ensuring that the taken water sample meets the access conditions for entering the subsequent monitoring system. Through the above structural optimization, the present utility model can not only take qualified water samples at any time, ensure the timeliness, accuracy and stability of on-line monitoring data, solve the problem that the existing river water quality on-line automatic monitoring system is prone to foreign matter blockage, which affects the timeliness and accuracy of monitoring, but also avoid a large amount of investment in manpower and material resources.

[0070] The above is only the preferred embodiment of the present utility model and is not used to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An anti-clogging sampling device for online automatic monitoring of river channels, characterized in that, Comprising: A sampling pipe group connected to an on-line monitoring device and used for conveying water samples to the on-line monitoring device; A water intake screen (1) arranged at the end of the sampling pipe group and used for intercepting foreign matters in water; A cleaning component fixedly installed relative to the water intake screen and used for cleaning the water intake screen. The cleaning component includes a rotary brush (2) and a propeller (3). The propeller is rotatably and fixedly installed relative to the water intake screen. The propeller is power-connected to the rotary brush and used for driving the rotary brush to rotate. The rotary brush can contact the surface of the water intake screen and is used for cleaning the water intake screen during rotation.

2. The anti-blocking sampling device for river channel on-line automatic monitoring according to claim 1, wherein The sampling pipe group includes a sampling pipe (4) and a flexible water pipe (5). The sampling pipe is arranged at one end of the flexible water pipe. The other end of the flexible water pipe is connected to an on-line monitoring device. The water intake screen is arranged at the end of the sampling pipe.

3. The anti-blocking sampling device for river channel on-line automatic monitoring according to claim 2, wherein A sleeve (6) is sleeved outside the sampling pipe. The propeller is rotatably installed on the sleeve.

4. The anti-blocking sampling device for river channel on-line automatic monitoring according to claim 3, wherein The sleeve is provided with a fixing frame (7) at one end corresponding to the water intake screen of the sampling pipe. A connecting shaft (8) is arranged on the fixing frame. The propeller is arranged at one end of the connecting shaft outside the fixing frame. The rotary brush is arranged at one end of the connecting shaft inside the fixing frame.

5. The anti-blocking sampling device for river channel on-line automatic monitoring according to claim 4, wherein The rotary brush includes a rotary brush body. Brush hairs are arranged on one side of the rotary brush body. The connecting shaft is fixedly connected to the rotation center on the other side of the rotary brush body. The brush hairs contact the surface of the water intake screen.

6. The anti-blocking sampling device for river channel on-line automatic monitoring according to claim 5, wherein The cleaning area formed by the rotation of the brush hairs covers the water intake screen.

7. The anti-blocking sampling device for river channel on-line automatic monitoring according to claim 4, wherein The sleeve is of a cylindrical structure. The sampling pipe is of a circular pipe structure. The sampling pipe is arranged inside the sleeve and coaxially arranged with the sleeve. The connecting shaft is coaxially arranged with the sleeve.

8. The anti-blocking sampling device for river channel on-line automatic monitoring according to claim 7, wherein An installation sleeve (9) coaxially arranged with the sleeve is arranged on the fixing frame. The connecting shaft is rotatably arranged on the installation sleeve.

9. The anti-blocking sampling device for river channel on-line automatic monitoring according to claim 1, wherein An air bag (10) is arranged relative to the water intake screen. The air bag can provide buoyancy to the water intake screen to make the water intake screen suspended below the water surface.

10. The anti-clogging sampling device for on-line automatic monitoring of river channels according to claim 9, wherein the airbag is detachably installed relative to the water intake screen; and the number of the airbags is adjustable.

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