Detection sampling device for hydraulic engineering

Abstract

The invention relates to the technical field of hydraulic engineering sampling, in particular to a detection sampling device for hydraulic engineering. The device comprises a sampling barrel, wherein a water inlet is formed in the side wall of the sampling barrel; a fine filter screen is mounted on the water inlet, and a coarse filter screen is mounted on the outer side of the fine filter screen; a rotating shaft is coaxially arranged between the fine filter screen and the coarse filter screen, and a cleaning brush for cleaning the fine filter screen and the coarse filter screen and a stirring cutting blade for stirring large impurities or cutting aquatic plants are mounted on the rotating shaft; a water sample can be secondarily filtered through the arrangement of the coarse filter screen and the fine filter screen, the coarse filter screen and the fine filter screen can be cleaned through the arrangement of the cleaning brush, and large impurities are pushed aside or aquatic plants are cut by stirring the cutting blade while cleaning is conducted.

Description

Technical Field

[0001] The present invention relates to the technical field of water conservancy project sampling, and specifically relates to a detection sampling device for water conservancy projects. Background Art

[0002] A detection sampling device for water conservancy projects is a device used to collect samples of relevant materials or media for water conservancy projects. During the construction and operation of water conservancy projects (such as reservoirs) along rivers and lakes, it is necessary to monitor the water quality changes at different depths of the reservoir to understand the water quality conditions of the water bodies at different depths. The detection sampling device for water conservancy projects is used to collect deep water samples and analyze indicators such as dissolved oxygen, acidity and alkalinity, nutrients, heavy metal content, and organic pollution in the water, helping to monitor the vertical changes of the water body, so as to understand the overall pollution status and ecological environment of the water body.

[0003] The invention with the application number CN202411049196.3 relates to the technical field of water conservancy project sampling, and specifically relates to a detection sampling device and method for water conservancy projects, including a water collection cylinder. An inlet groove is provided on the front side of the water collection cylinder. A shielding ring is movably arranged on the front side of the inlet groove. A pressure plate is movably arranged in the water collection cylinder. A first fixing block is movably arranged on the upper side of the water collection cylinder. The first fixing block is provided with fan blades in an array. A counterweight block is movably arranged on the lower side of the water collection cylinder. An exhaust mechanism is arranged in the water collection cylinder. A driving mechanism is arranged on the upper side of the water collection cylinder. The above invention enables the device to accurately absorb water from a specified water area through a shielding ring that can be switched at the bottom of the water. After the device reaches the specified water area, a negative pressure will be formed in the water collection cylinder. After the shielding ring is opened, the water flow will be quickly sucked due to the negative pressure. After the shielding ring rises, the filter screen will cover the inlet groove to prevent stones and the like from jamming the inlet groove.

[0004] However, this patent only relies on the filter screen to passively block stones and other debris after the shielding ring rises, lacking an active cleaning mechanism, and the cleaning effect is limited.

[0005] Therefore, it is necessary to provide a new technical solution to overcome the above defects. Summary of the Invention

[0006] The purpose of the present invention is to provide a detection sampling device for water conservancy projects that can effectively solve the above technical problems.

[0007] To achieve the purpose of the present invention, the following technical solutions are adopted:

[0008] A detection sampling device for water conservancy projects, including: a sampling cylinder, and an inlet is provided on the side wall of the sampling cylinder;

[0009] A fine filter screen is installed on the inlet, and a coarse filter screen is installed outside the fine filter screen;

[0010] A rotating shaft is coaxially arranged between the fine filter and the coarse filter, and a cleaning brush for cleaning the fine filter and the coarse filter, and a moving cutting blade for removing large impurities or cutting aquatic plants are installed on the rotating shaft;

[0011] The top of the sampling tube is provided with a power source for driving the rotating shaft to rotate.

[0012] Furthermore, the output end of the power source is connected to a stirring blade; the output end of the power source is also connected to a transmission rod, the transmission rod is threadedly connected to a piston, and the piston is slidably installed in the sampling cylinder.

[0013] Furthermore, a rack is slidably installed on one side of the sampling tube; the rack is meshingly connected with a gear; the gear is coaxially connected with a transmission shaft; the transmission shaft is connected with a first driven wheel; the first driven wheel is transmission-connected with a transmission member; the transmission member is transmission-connected with a second driven wheel, and the second driven wheel is coaxially connected with the rotating shaft.

[0014] Furthermore, a storage box is provided on the top of the sampling cylinder, a discharge port is provided at the bottom of the storage box, a baffle is hinged on the discharge port, a return torsion spring is coaxially connected to the baffle, and the bottom of the baffle is connected to the piston via an elastic connecting rope.

[0015] Furthermore, a pressure sensor is provided at the bottom of the inner side of the sampling tube; a solenoid valve is provided at the water inlet of the sampling tube; the pressure sensor and the solenoid valve are electrically connected to a controller; and the controller is electrically connected to the power source.

[0016] Furthermore, a connecting buckle is provided on the top of the sampling cylinder.

[0017] Furthermore, a counterweight block is detachably connected to the bottom of the sampling cylinder.

[0018] Furthermore, a protective shell is provided on the outer side of the power source; and protective shells are provided on the outer sides of the first driven wheel, the transmission member, and the second driven wheel.

[0019] Furthermore, a limiting rod is installed on the inner wall of the sampling cylinder, and the limiting rod is slidably connected to the piston.

[0020] Furthermore, a water outlet is provided on the side wall of the sampling tube.

[0021] Compared with the prior art, the present invention has the following beneficial effects: the present invention can perform secondary filtration on water samples by setting a coarse filter screen and a fine filter screen, and can clean the coarse filter screen and the fine filter screen separately by setting a cleaning brush, and at the same time, large impurities can be pushed away or aquatic plants can be cut by moving the cutting blade. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0023] Figure 1 It is a structural schematic diagram of a detection sampling device for water conservancy projects of the present invention;

[0024] Figure 2 It is a schematic diagram of a detection sampling device for water conservancy projects of the present invention;

[0025] Figure 3 This is a schematic diagram of the internal structure of a detection sampling device for water conservancy projects of the present invention;

[0026] Figure 4 It is an internal schematic diagram of a detection sampling device for water conservancy engineering of the present invention;

[0027] Figure 5 It is a schematic diagram of the gear transmission part of a detection and sampling device for water conservancy projects of the present invention;

[0028] Figure 6 The present invention is a schematic diagram of a detection sampling device for water conservancy projects.

[0029] In the figure: 1. sampling tube; 2. cover body; 3. connecting buckle; 4. protective shell; 5. power source; 6. drain outlet; 7. pressure relief hole; 8. coarse filter; 9. toggle cutting blade; 10. stirring blade; 11. piston; 12. limit rod; 13. rack; 14. gear; 15. first driven wheel; 16. transmission part; 17. second driven wheel; 18. cleaning part; 19. fine filter; 20. transmission shaft; 21. protective shell; 22. counterweight; 23. storage box; 24. controller; 25. pressure sensor; 26. solenoid valve; 27. communicator; 28. mobile terminal. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are partial embodiments of the present invention, rather than all embodiments.

[0031] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "center", "lateral", "longitudinal", "front", "rear", "left", "right", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings. These are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, it should not be construed as limiting the protection scope of the present invention. When a component is referred to as being "fixed to" another component, it can be directly on the other component or there may also be an intermediate component. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediate component at the same time. When a component is considered to be "disposed on" another component, it can be directly disposed on the other component or there may be an intermediate component at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of explanation and illustration.

[0032] As Figures 1 to 6 shown, the present invention relates to a detection and sampling device for water conservancy projects, comprising: a sampling cylinder 1, which is hollow inside to form a storage space for holding water samples taken from rivers or lakes.

[0033] An inlet is provided at a position near the top of the side wall of the sampling cylinder 1, and a solenoid valve 26 is installed on the inlet to control the opening and closing of the inlet; a drain port 6 is also provided on the side wall of the sampling cylinder 1 for discharging the water sample from the sampling cylinder 1; a pressure relief hole 7 is provided at a position near the bottom of the side wall of the sampling cylinder 1 for relieving pressure to avoid interfering with the movement of the piston 11.

[0034] A cover 2 is provided at the top of the sampling cylinder 1 and is detachably connected to the sampling cylinder 1 so that the cover 2 can be opened to inspect the internal structure of the sampling cylinder 1.

[0035] On both sides of the top of the cover body 2, two connecting buckles 3 are symmetrically installed. The connecting buckles 3 are used to connect the lifting ropes or connecting rods, so as to facilitate putting the sampling cylinder 1 into the water or taking the sampling cylinder 1 out of the water by manual or lifting device; a storage box 23 is also arranged at a position near the edge of the top of the cover body 2. The storage box 23 is used to store flocculant. When sampling turbid water samples such as polluted river water and industrial wastewater, the staff can put the flocculant into the storage box 23; the storage box 23 includes a box body. The top of the box body is provided with a feeding port for adding flocculant. The bottom of the box body is provided with a discharging port. A baffle is hinged on the discharging port. The baffle is coaxially connected with a return torsion spring. When the baffle is opened, the flocculant is put in, and the greater the opening amplitude, the faster the putting speed; the discharging port of the storage box 23 is communicated with the inside of the sampling cylinder 1; the baffle is connected with the piston 11 through an elastic connecting rope. The elastic connecting rope is arranged along the side wall of the sampling cylinder 1; so that when the piston 11 slides, the baffle can be driven to open.

[0036] At the bottom inside the sampling cylinder 1, a telescopic block is arranged. The telescopic block includes an outer shell, a slider slidably installed inside the outer shell, and a spring installed at the bottom of the slider and connected with the outer shell; a pressure sensor 25 is also arranged between the slider and the outer shell; a connecting block is arranged below the sampling cylinder 1. The connecting block is cylindrical, and the bottom of the connecting block is provided with a connecting structure for connecting the counterweight 22 to adjust the sinking speed, so that the sampling cylinder 1 can quickly sink into the water; the connecting structure is a common buckle, hook, etc.

[0037] A power source 5 is also installed on the top of the cover body 2. A protective shell 4 is arranged outside the power source 5 to prevent the power source 5 from getting water; a power supply can also be arranged inside the protective shell 4 to supply power to the power source 5; a piston 11 is slidably installed inside the sampling cylinder 1. The piston 11 is driven to lift and lower by the power source 5; in this embodiment, the power source 5 can be selected from a motor, a linear motor or a telescopic cylinder.

[0038] As an alternative solution, the power source 5 can be selected as a motor. The output end of the motor is connected with a transmission rod. The transmission rod is threadedly connected with the middle part of the piston 11. The motor rotates through the transmission rod to drive the piston 11 to lift and lower; a limiting rod 12 is also fixedly installed on the inner wall of the sampling cylinder 1. The piston 11 is slidably connected with the limiting rod 12. The piston 11 is limited by the limiting rod 12 to ensure that when the transmission rod rotates, the piston 11 can slide up and down without rotating following the transmission rod; the output end of the motor is also connected with a stirring blade 10. The stirring blade 10 is used to stir the water sample entering the inside of the sampling cylinder 1 to promote solid-liquid separation; when the motor starts, it drives the stirring blade 10 to stir to improve the sample uniformity while driving the piston 11 to move downward along the limiting rod 12, so as to form a negative pressure inside the sampling cylinder 1, so that the sampling cylinder 1 can quickly extract the water sample; the transmission rod can be selected from a threaded rod or a ball screw.

[0039] A rack 13 is also slidably installed on one side of the interior of the sampling cylinder 1; the bottom of the rack 13 is connected to the top of the piston 11, so that the rack 13 can be driven by the piston 11 to move up and down; the rack 13 is meshingly connected with a gear 14, which is used to drive the gear 14 to rotate through the rack 13; the gear 14 is coaxially connected to a transmission shaft 20, which is rotatably installed on the side wall of the sampling cylinder 1, and the transmission shaft 20 can also be rotatably installed on the coarse filter 8, and the rotation of the gear 14 can drive the transmission shaft 20 to rotate synchronously; the transmission shaft 20 passes through the side wall of the sampling cylinder 1 and extends to the outside of the sampling cylinder 1, and one end of the transmission shaft 20 on the outside of the sampling cylinder 1 is connected to a first driven wheel 15, and the rotation of the transmission shaft 20 can drive the first driven wheel 15 to rotate; the first driven wheel 15 is transmission-connected to a transmission member 16, and the transmission member 16 is transmission-connected to a second driven wheel 17, and the rotation of the first driven wheel 15 can The second driven wheel 17 is driven to rotate; the second driven wheel 17 is coaxially connected with a rotating shaft, and the rotation of the second driven wheel 17 can drive the rotating shaft to rotate; a cleaning member 18 is installed at one end of the rotating shaft close to the sampling tube 1, and a toggle cutting blade 9 is installed at one end of the rotating shaft away from the sampling tube 1, and the cleaning member 18 and the toggle cutting blade 9 can be driven to rotate respectively by rotating the rotating shaft; bristles are provided on the upper and lower sides of the cleaning member 18 and on one side close to the fine filter 19, so that the fine filter 19 and the coarse filter 8 can be cleaned respectively; the first driven wheel 15 and the second driven wheel 17 can be selected as gears 14, synchronous belts or pulleys, and the corresponding transmission member 16 can be selected as chains, synchronous belts or belts; a protective shell 21 is also installed on the outer wall of the sampling tube 1 to protect the first driven wheel 15 and the second driven wheel 17 arranged therein to avoid impact from large objects such as wood blocks and stones in the water area.

[0040] A coarse filter screen 8 is installed on the outer wall of the sampling tube 1, and the coarse filter screen 8 is located outside the water inlet for primary filtering of the water sample; a fine filter screen 19 is installed on the water inlet of the sampling tube 1 for secondary filtering of the incoming water sample; wherein the cleaning member 18 is located on the inner side of the coarse filter screen 8 for cleaning the coarse filter screen 8 and the fine filter screen 19 at the same time; the cutting blade 9 is located on the outer side of the coarse filter screen 8 for cutting off the aquatic plants near the coarse filter screen 8 or for pushing away or removing other impurities to avoid affecting the water intake.

[0041] When the device is lowered to a water area of a predetermined depth, the staff controls the power source 5 to start through the mobile terminal 28, and simultaneously opens the solenoid valve 26. When the power source 5 is started, the piston 11 is driven to slide downward, the water sample is quickly extracted, and the stirring blade 10 is driven to rotate. During the downward sliding process of the piston 11, the rack 13 is driven to slide downward, thereby rotating the gear 14, and then driving the first driven wheel 15 and the transmission member 16 to rotate in turn. During the rotation of the transmission member 16, the toggle cutting blade 9 is driven to rotate to cut the weeds at the water inlet, and the cleaning member 18 is driven to rotate synchronously, thereby cleaning the fine filter 19 and the coarse filter 8 respectively, which can remove The attached fine particles such as silt, algae, etc. are prevented from being blocked by the filter screen to affect the sampling volume and representativeness of water quality, and the pollution of solid impurities is reduced; when sampling polluted waters, the staff first puts flocculants into the storage box 23, so that when the piston 11 slides downward, the baffle of the storage box 23 will be driven to open. The opening amplitude of the baffle and the movement speed of the piston 11 need to match. The greater the downward stroke of the piston 11, the greater the opening amplitude of the baffle. At this time, there are more water samples in the sampling tube 1, and the flocculant is discharged faster, which is convenient for quantitative delivery, so that the flocculant is gradually put into the sampling tube 1; the flocculant and the water sample can be stirred and mixed by the stirring blade 10. In this embodiment, the piston 11 is driven by a motor to link with the stirring blade 10, and the pumping and stirring work are realized synchronously to improve the sampling efficiency; the purity of the water sample can be improved by setting a double filter screen, and the interference of large particles can be reduced.

[0042] A controller 24 is also provided in the sampling tube 1. The controller 24 is electrically connected to the pressure sensor 25 and the solenoid valve 26 respectively. The controller 24 is also electrically connected to the communicator 27, which is responsible for receiving and processing the signal from the pressure sensor 25, and controlling the action of the solenoid valve 26 and the motor according to the preset logic; the mobile terminal 28 is connected to the communicator 27 via wireless communication, and the staff can send control instructions at the mobile terminal 28 to control the start and stop of the power source 5; the mobile terminal 28 can be a mobile phone terminal device, a remote control, etc.

[0043] In the startup phase, an instruction is sent through the mobile device 28, and the controller 24 synchronously starts the power source 5 and opens the solenoid valve 26; the water sample enters the sampling cylinder 1 after being double-filtered by the coarse filter screen 8 and the fine filter screen 19. When the pressure sensor 25 detects the signal that the piston 11 touches the bottom, the controller 24 closes the solenoid valve 26 to stop the water inlet, ensuring that the water volume of each sampling reaches the preset threshold. When the measured real-time pressure reaches the set threshold, the controller 24 closes the solenoid valve 26 to prevent the water sample from flowing back or external impurities from entering; at the same time, when the piston 11 moves to the lowest position, the rack 13 is separated from the gear 14, making the transmission rod rotate idly and no longer driving the piston 11 to move axially along the transmission rod. The motor continues to drive the stirring blade 10 to rotate and continuously mix. After mixing for a predetermined time (such as 3 - 5 minutes), the flocculant is fully mixed with the water sample to promote the precipitation or uniform dispersion of suspended substances. After shutdown, the staff can take out the water sample.

[0044] As a further extension of this application, when sampling in the deep water area of the water area, due to the large water pressure, after taking out the water sample last time, it is not necessary to drive the piston 11 to reset and move upward. The sampling cylinder 1 can be directly put into the water area for sampling, saving the reset energy consumption and time; when sampling in the shallow water area of the water area, due to the small water pressure, it is necessary to reset the piston 11 to the upper part before sampling to form an initial negative pressure, which can quickly absorb water and shorten the sampling time, thereby improving the sampling speed. Fast sampling can reduce the sampling error caused by water flow disturbance.

[0045] As another alternative solution, the power source 5 is a linear motor or a telescopic cylinder. The output end of the power source 5 is connected with a mother guide rod, and a spiral groove is opened inside the mother guide rod. A son guide rod is slidably connected to the mother guide rod. When the output end of the power source 5 extends, it drives the mother guide rod to move downward, and then drives the son guide rod to rotate, and then drives the stirring blade 10 to rotate; and drives the piston 11 to slide downward. In this solution, there is no need to use the limiting rod 12 to limit the piston 11; among them, the mother guide rod and the son guide rod are preferably ball screws.

[0046] Optionally, the following method can also be used to drive the rack 13 to move up and down; specifically, a driving bevel gear 14 can be coaxially installed on the output shaft of the motor. The driving bevel gear 14 is drivingly connected with a driven bevel gear 14. A spur gear 14 is installed on the transmission shaft 20 of the driven bevel gear 14. The spur gear 14 is meshed and connected with the rack 13. The spur gear 14 is driven to rotate through the bevel gear 14, and then the rack 13 is driven to move up and down. When the rack 13 moves to the lowest position by this method, it is separated from the spur gear 14. A reset structure for the rack 13 needs to be set, such as installing a reset spring at the bottom of the rack 13, so that when the spur gear 14 rotates in reverse, it can drive the rack 13 to mesh with the spur gear 14, so that the rack 13 moves upward.

[0047] All standard parts used in the present invention can be purchased from the market. The special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part all adopt conventional means such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts, and equipment all adopt conventional models in the prior art. In addition, the circuit connection adopts the conventional connection method in the prior art, which will not be elaborated here. The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0048] It should be understood that those of ordinary skill in the art can make improvements or transformations according to the above description, and all such improvements and transformations should fall within the protection scope of the appended claims of the present invention.

Claims

1. A detection and sampling device for water conservancy projects, characterized in that, It comprises: a sampling tube, wherein a water inlet is provided on the side wall of the sampling tube; A fine filter is installed on the water inlet, and a coarse filter is installed on the outer side of the fine filter; A rotating shaft is coaxially arranged between the fine filter and the coarse filter, and a cleaning brush for cleaning the fine filter and the coarse filter, and a moving cutting blade for removing large impurities or cutting aquatic plants are installed on the rotating shaft; The top of the sampling tube is provided with a power source for driving the rotating shaft to rotate.

2. The inspection and sampling device for water conservancy projects according to claim 1, wherein, The output end of the power source is connected with a stirring blade; the output end of the power source is also connected with a transmission rod, the transmission rod is threadedly connected with a piston, and the piston is slidably installed in the sampling cylinder.

3. A detection and sampling device for water conservancy projects according to claim 1, characterized in that, A rack is also slidably installed on one side of the sampling tube; the rack is meshingly connected with a gear; the gear is coaxially connected with a transmission shaft; the transmission shaft is connected with a first driven wheel; the first driven wheel is transmission-connected with a transmission member; the transmission member is transmission-connected with a second driven wheel, and the second driven wheel is coaxially connected with the rotating shaft.

4. The inspection and sampling device for water conservancy projects according to claim 2, wherein, A storage box is also provided on the top of the sampling cylinder, a discharge port is provided at the bottom of the storage box, a baffle is hinged on the discharge port, a return torsion spring is coaxially connected to the baffle, and the bottom of the baffle is connected to the piston through an elastic connecting rope.

5. The inspection and sampling device for water conservancy projects according to claim 4, characterized in that, A pressure sensor is arranged at the bottom of the inner side of the sampling tube; a solenoid valve is arranged at the water inlet of the sampling tube; the pressure sensor and the solenoid valve are electrically connected to a controller; and the controller is electrically connected to the power source.

6. The inspection and sampling device for water conservancy projects according to claim 1, characterized in that, A connecting buckle is arranged on the top of the sampling cylinder.

7. The inspection and sampling device for water conservancy projects according to claim 6, characterized in that, The bottom of the sampling cylinder is detachably connected with a counterweight block.

8. The inspection and sampling device for water conservancy projects according to claim 3, wherein, A protective shell is arranged on the outer side of the power source; and protective shells are arranged on the outer sides of the first driven wheel, the transmission member and the second driven wheel.

9. The inspection and sampling device for a water conservancy project according to claim 2, characterized in that, A limiting rod is also installed on the inner wall of the sampling cylinder, and the limiting rod is slidably connected with the piston.

10. A detection and sampling device for water conservancy projects according to claim 1, characterized in that, A water outlet is provided on the side wall of the sampling tube.

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