Water quality sampler

Abstract

The utility model provides a water quality sampler which comprises a sampling cylinder for containing a water sample, a sample introduction pipe for filtering and collecting the water sample, a water inlet pipe for connecting the sample introduction pipe and the sampling cylinder, and a water supply assembly for forcing the water sample in the sample introduction pipe to enter the sampling cylinder along the water inlet pipe, a water inlet groove is formed in the side wall of the sample introduction pipe, and a filter screen is arranged on the water inlet groove. The water quality sampler further comprises a cleaning brush movably arranged on the outer side of a filter screen and a hydrodynamic assembly used for driving the cleaning brush to move, when a water delivery assembly delivers a water sample in a sample injection pipe into a sampling barrel through a water inlet pipe, the hydrodynamic assembly is driven by flowing of the water sample in the sample injection pipe, the cleaning brush is driven to move, and the outer side of the filter screen is brushed; the filter screen can be cleaned while water quality sampling is carried out, the anti-blocking function can be achieved without replacing the filter screen, and the device is simple in structure, low in cost and better in anti-blocking effect compared with back flushing and cleaning brush brushing.

Description

Technical Field

[0001] This utility model relates to the field of water quality sampling technology, and specifically to a water quality sampler. Background Technology

[0002] In many fields such as environmental monitoring, scientific research experiments and industrial production, accurately obtaining representative water quality samples is a key prerequisite for water quality analysis and assessment. In traditional water quality sampling work, in order to ensure that the collected water samples meet the requirements for subsequent testing, filters are usually set up to filter impurities in the water.

[0003] When various impurities such as silt, dead leaves, and plankton in the water flow through the filter screen, they will adhere to the filter screen. As the sampling time increases and the sampling volume increases, the impurities attached to the filter screen surface will continue to accumulate, which will cause the filter screen pores to become blocked, increase the resistance of water flow through the filter screen, significantly reduce the sampling efficiency, and in severe cases, even lead to sampling failure.

[0004] To address this issue, most existing solutions involve manually replacing the filter screen. This method not only increases labor costs and the complexity of sampling operations, but may also affect sampling quality if the filter screen is not replaced in a timely manner. There are also methods that use backwashing technology to automatically clean the filter screen, but this method involves complex equipment structures, high costs, and the backwashing effect is limited, making it difficult to achieve the ideal anti-clogging effect in some complex water quality environments. Utility Model Content

[0005] The purpose of this invention is to overcome one or more shortcomings in the prior art and provide a water quality sampler.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is a water quality sampler, comprising:

[0007] Sampling tubes used to hold water samples;

[0008] A sample inlet tube for filtering and collecting water samples has a water inlet groove on its side wall and a filter screen is provided on the water inlet groove.

[0009] A water inlet pipe used to connect the sample inlet tube and the sampling cylinder;

[0010] A water delivery assembly for forcing the water sample in the inlet tube to enter the sampling cylinder along the inlet tube;

[0011] The water sampler also includes a cleaning brush movably disposed on the outside of the filter screen, and a water-driven assembly for driving the cleaning brush to move. When the water delivery assembly sends the water sample in the inlet tube into the sampling cylinder through the inlet tube, the flow of the water sample in the inlet tube drives the water-driven assembly to drive the cleaning brush to move and clean the outside of the filter screen.

[0012] Preferably, the hydrodynamic assembly includes a rotating shaft, an impeller, and a U-shaped frame. The rotating shaft is rotatably and coaxially disposed inside the sample inlet tube. The impeller is sleeved on the rotating shaft, and the U-shaped frame is sleeved on the sample inlet tube. The middle part of the vertical plate of the U-shaped frame is connected to the end of the rotating shaft that rotatably passes through the sample inlet tube. The crossbeam of the U-shaped frame is used to install the cleaning brush. When the water flow in the sample inlet tube drives the impeller to rotate, the impeller drives the cleaning brush to rotate through the rotating shaft and the U-shaped frame, thereby cleaning the outside of the filter screen.

[0013] More preferably, the hydrodynamic assembly further includes a support ring rotatably fitted onto the injection tube, and a radial short plate connected to the end of the crossbeam away from the vertical plate, the free end of the radial short plate being fixedly connected to the support ring.

[0014] More preferably, the water inlet trough is located on one side of the support ring, and the impeller is located on the other side of the support ring.

[0015] More preferably, the hydrodynamic assembly further includes a support plate disposed inside the injection tube and extending radially along the injection tube. Both ends of the support plate are fixedly connected to the inner wall of the injection tube, and the end of the rotating shaft away from the vertical plate is rotatably connected to the support plate.

[0016] More preferably, the water sampler further includes a cage-shaped protective frame coaxially disposed outside the sample inlet tube. The cage-shaped protective frame is fixedly connected to the sample inlet tube. The two ends of the cage-shaped protective frame are provided with sealing plates. The middle of the cage-shaped protective frame is provided with a support column parallel to the axis of the sample inlet tube. There are multiple support columns, which are spaced apart and are located outside the U-shaped frame.

[0017] Preferably, the water inlet pipe is a rubber hose.

[0018] More preferably, the water delivery assembly includes a water pump connected in series with the water inlet pipe, and a power supply for driving the water pump.

[0019] More preferably, the water sampler further includes a cover disposed at the end of the sampling tube, the cover and the end of the sampling tube forming a sealed cavity, the water delivery assembly being disposed within the sealed cavity, and the water inlet pipe penetrating through the cover.

[0020] More preferably, the side wall of the sampling tube is provided with an exhaust pipe and a water outlet pipe from top to bottom, the exhaust pipe is provided with a one-way valve, and the cover is provided at the upper end of the sampling tube.

[0021] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0022] The water sampler provided by this utility model includes a sampling cylinder for holding water samples, an inlet tube for filtering and collecting water samples, a water inlet pipe for connecting the inlet tube and the sampling cylinder, and a water delivery component for forcing the water sample in the inlet tube into the sampling cylinder along the water inlet pipe. The side wall of the inlet tube has an inlet groove, and a filter screen is provided on the inlet groove. The water sampler also includes a cleaning brush movably disposed on the outside of the filter screen, and a water-driven component for driving the cleaning brush. When the water delivery component sends the water sample in the inlet tube into the sampling cylinder through the water inlet pipe, the flow of the water sample in the inlet tube drives the water-driven component to drive the cleaning brush to clean the outside of the filter screen. This allows for cleaning of the filter screen while water sampling is being performed, achieving anti-clogging function without replacing the filter screen. The device has a simple structure and low cost. Compared with backwashing, the cleaning brush has a better anti-clogging effect. Attached Figure Description

[0023] Figure 1 This is a perspective view of a preferred embodiment of the present invention.

[0024] Figure 2 yes Figure 1 Enlarged cross-sectional view of the central cage-shaped protective frame.

[0025] Figure 3 yes Figure 2 The three-dimensional schematic diagram with the cage-shaped protective frame hidden has been adjusted in terms of viewing angle for easier observation.

[0026] Figure 4 yes Figure 1 A schematic diagram of the middle cover after partial sectioning.

[0027] The components are as follows: 10. Sampling tube; 11. Exhaust pipe; 12. Water outlet pipe; 13. One-way valve; 20. Sample inlet pipe; 21. Water inlet tank; 22. Filter screen; 30. Water inlet pipe; 40. Water delivery assembly; 41. Water pump; 42. Power supply; 50. Cleaning brush; 60. Hydraulic assembly; 61. Rotating shaft; 62. Impeller; 63. U-shaped frame; 631. Vertical plate; 632. Horizontal beam; 64. Support ring; 65. Radial short plate; 66. Support plate; 70. Cage-shaped protective frame; 71. Sealing plate; 72. Support column; 80. Cover. Detailed Implementation

[0028] like Figures 1 to 4As shown, the water sampler provided by this utility model includes: a sampling tube 10 for holding water samples, an inlet tube 20 for filtering and collecting water samples, a water inlet pipe 30 for connecting the inlet tube 20 and the sampling tube 10, a water delivery assembly 40 for forcing the water sample in the inlet tube 20 into the sampling tube 10 along the water inlet pipe 30, a cleaning brush 50, and a water-driven assembly 60. The inlet tube 20 has a water inlet groove 21 on its side wall, and a filter screen 22 is installed on the water inlet groove 21. The water inlet pipe 30 is a rubber hose, allowing the angle of the water inlet pipe 30 to be changed as needed. The cleaning brush 50 is movably disposed outside the filter screen 22. The water-driven assembly 60 drives the cleaning brush 50 to move. When the water delivery assembly 40 sends the water sample in the inlet tube 20 into the sampling tube 10 through the water inlet pipe 30, the flow of the water sample in the inlet tube 30 drives the water-driven assembly 60, which in turn drives the cleaning brush 50 to move, thus cleaning the outside of the filter screen 22.

[0029] The advantage of this setup is that it allows for cleaning of the filter screen while water quality is being sampled, achieving anti-clogging functionality without the need to replace the filter screen. Furthermore, the equipment has a simple structure and low cost, and the cleaning brush provides a better anti-clogging effect compared to backwashing.

[0030] To achieve water sample flow-driven hydrodynamic assembly 60, in this embodiment, the hydrodynamic assembly 60 includes a rotating shaft 61, an impeller 62, and a U-shaped frame 63. The rotating shaft 61 is rotatably coaxially disposed inside the sample inlet tube 20. The impeller 62 is sleeved on the rotating shaft 61. The U-shaped frame 63 is sleeved on the sample inlet tube 20. The middle part of the vertical plate 631 of the U-shaped frame 63 is connected to the end of the rotating shaft 61 that rotatably passes through the sample inlet tube 20. The crossbeam 632 of the U-shaped frame 63 is used to install a cleaning brush 50. The cleaning brush 50 is installed on the side of the crossbeam 632 facing the filter screen 22 and is disposed close to the filter screen 22. When the water flow in the sample inlet tube 20 drives the impeller 62 to rotate, the impeller 62 drives the cleaning brush 50 to rotate through the rotating shaft 61 and the U-shaped frame 63, thereby cleaning the outside of the filter screen 22.

[0031] To improve stability, in this embodiment, the hydrodynamic assembly 60 further includes a support ring 64 rotatably fitted on the sample inlet tube 20, and a radial short plate 65 connected to the end of the crossbeam 632 away from the vertical plate 631. The free end of the radial short plate 65 is fixedly connected to the support ring 64. Furthermore, the hydrodynamic assembly 60 also includes a support plate 66, which is disposed inside the sample inlet tube 20 and extends in the radial direction of the sample inlet tube 20. Both ends of the support plate 66 are fixedly connected to the inner wall of the sample inlet tube 20, and the end of the rotating shaft 61 away from the vertical plate 631 is rotatably connected to the support plate 66.

[0032] To improve the driving efficiency of the hydrodynamic component 60, in this embodiment, the water inlet trough 21 is located on one side of the support ring 64, the impeller 62 is located on the other side of the support ring 64, the support plate 66 is located near the connection between the sample inlet pipe 20 and the water inlet pipe 30, and the impeller 62 is located near the support plate 66.

[0033] To filter out larger debris such as branches in advance and to prevent the sample inlet tube 20 from hitting rocks, in this embodiment, the water quality sampler also includes a cage-shaped protective frame 70 coaxially arranged outside the sample inlet tube 20. The cage-shaped protective frame 70 is fixedly connected to the sample inlet tube 20. The two ends of the cage-shaped protective frame 70 are provided with sealing plates 71. The middle of the cage-shaped protective frame 70 is provided with a support column 72 parallel to the axis of the sample inlet tube 20. There are multiple support columns 72 arranged at intervals. The support columns 72 are located outside the U-shaped frame 63. The rotating shaft 61 passes through the end of the sample inlet tube 20 and also passes through the vertical plate 631 and is rotatably connected to the sealing plate 71 at one end of the cage-shaped protective frame 70.

[0034] In this embodiment, the side wall of the sampling cylinder 10 is provided with an exhaust pipe 11 and a water outlet pipe 12 from top to bottom. A one-way valve 13 is provided on the exhaust pipe 11. During water sampling, air is discharged through the exhaust pipe 11, ensuring a constant air pressure inside the sampling cylinder 10, facilitating water intake. The water sampler also includes a cover 80 located at the upper end of the sampling cylinder 10. The cover 80 and the upper end of the sampling cylinder 10 form a sealed cavity. The water inlet pipe 30 passes through the cover 80, and the water delivery assembly 40 is disposed within this sealed cavity. The sampling tube 10 includes a water pump 41 connected in series with the water inlet pipe 30, and a power supply 42 for driving the water pump 41. Both the water pump 41 and the power supply 42 are fixed at the upper end of the sampling tube 10. The input end of the water pump 41 is connected to the water inlet pipe 30, and the output end of the water pump 41 is connected through the sampling tube 10. The power supply 42 is a storage battery and is electrically connected to the water pump 41. When sampling, the water pump 41 is started to pump the water sample through the water inlet pipe 30 and into the sampling tube 10, which facilitates rapid sampling and is simple and convenient to operate.

[0035] During water sampling, the cage-shaped protective frame 70 and the sample inlet tube 20 are submerged in the sampling water area. The cage-shaped protective frame 70 protects the sample inlet tube 20, preventing damage to the internal components. After the water sample is filtered by the filter screen 22, impurities are intercepted on the filter screen 22. At the same time, the impact of the water flow drives the impeller 62 to rotate, which in turn drives the connecting shaft 61 to rotate. The connecting shaft 61 drives the vertical plate 631 of the U-shaped frame 63 to rotate, which in turn causes the crossbeam 632 of the U-shaped frame 63 to drive the cleaning brush 50, the radial short plate 65, and the support ring 64 to rotate around the axis of the sample inlet tube 20. This ensures the stable rotation of the U-shaped frame 63 and allows the cleaning brush 50 driven by the U-shaped frame 63 to clean the outer surface of the filter screen 22, thereby cleaning the debris adhering to the filter screen 22 and effectively preventing the filter screen 22 from clogging. The structure is simple, the operating cost is low, and it can effectively save sampling costs.

[0036] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the protection scope of this utility model.

Claims

1. A water quality sampler, comprising: a sampling cylinder for containing water sample; a sampling tube for filtering and collecting water sample, a side wall of the sampling tube being provided with a water inlet groove, and a filter screen being arranged on the water inlet groove; a water inlet pipe for connecting the sampling tube and the sampling cylinder; a water feeding assembly for forcing water sample in the sampling tube to flow along the water inlet pipe into the sampling cylinder; characterized in that: the water quality sampler further comprises a cleaning brush movably arranged outside the filter screen, and a water-driven assembly for driving the cleaning brush to move, when the water feeding assembly feeds the water sample in the sampling tube into the sampling cylinder through the water inlet pipe, the flow of the water sample in the sampling tube drives the water-driven assembly to drive the cleaning brush to move and brush the outside of the filter screen.

2. The water quality sampler of claim 1, wherein: the water-driven assembly comprises a rotating shaft, an impeller and a U-shaped bracket, the rotating shaft is coaxially and rotatably arranged in the sampling tube, the impeller is sleeved on the rotating shaft, the U-shaped bracket is sleeved on the sampling tube, a middle part of a vertical plate of the U-shaped bracket is connected to an end of the rotating shaft penetrating through the sampling tube, a crossbeam of the U-shaped bracket is used for mounting the cleaning brush, when the water flow in the sampling tube drives the impeller to rotate, the impeller drives the cleaning brush to rotate through the rotating shaft and the U-shaped bracket, and the outside of the filter screen is cleaned.

3. The water quality sampler of claim 2, wherein: the water-driven assembly further comprises a supporting ring rotatably sleeved on the sampling tube, and a radial short plate connected to an end of the crossbeam away from the vertical plate, a free end of the radial short plate is fixedly connected with the supporting ring.

4. The water quality sampler of claim 3, wherein: the water inlet groove is located on one side of the supporting ring, and the impeller is located on the other side of the supporting ring.

5. The water quality sampler of claim 2, wherein: the water-driven assembly further comprises a supporting plate arranged in the sampling tube and extending in a radial direction of the sampling tube, two end parts of the supporting plate are fixedly connected to inner walls of the sampling tube, and an end of the rotating shaft away from the vertical plate is rotatably connected to the supporting plate.

6. The water quality sampler of claim 2, wherein: the water quality sampler further comprises a cage-shaped protective frame coaxially arranged outside the sampling tube, the cage-shaped protective frame is fixedly connected with the sampling tube, two end parts of the cage-shaped protective frame are provided with sealing plates, a middle part of the cage-shaped protective frame is provided with supporting columns parallel to an axis of the sampling tube, a plurality of supporting columns are arranged at intervals, and the supporting columns are located outside the U-shaped bracket.

7. The water quality sampler of claim 1, wherein: the water inlet pipe is a rubber hose.

8. The water quality sampler of claim 1, wherein: the water feeding assembly comprises a water pump connected in series with the water inlet pipe, and a power supply for driving the water pump to operate.

9. The water quality sampler of any one of claims 1-8, wherein: the water quality sampler further comprises a cover arranged at an end of the sampling cylinder, the cover and the end of the sampling cylinder form a closed cavity, the water feeding assembly is arranged in the closed cavity, and the water inlet pipe penetrates through the cover.

10. The water quality sampler of claim 9, wherein: a side wall of the sampling cylinder is sequentially provided with an air exhaust pipe and a water outlet pipe from top to bottom, a one-way valve is arranged on the air exhaust pipe, and the cover is arranged at an upper end of the sampling cylinder.

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