Hydrological test monitoring device with sampling function

Abstract

The application relates to the technical field of water quality sampling, and discloses a hydrological test monitoring device with a sampling function, which comprises a telescopic rod, a cylindrical mounting seat fixed at the bottom of the telescopic rod, a plurality of cylindrical sampling barrels connected to the bottom of the cylindrical mounting seat through plug-in assemblies, and a sampling column formed by the cylindrical mounting seat and the plurality of cylindrical sampling barrels. Sampling cavities are arranged in the plurality of cylindrical sampling barrels along the length direction of the cylindrical sampling barrels; a sampling pipeline penetrating through the bottom of each sampling cavity is arranged on the side wall of each cylindrical sampling barrel; and a one-way valve is arranged in the sampling pipeline. Through the modular plug-in structure design, the cylindrical sampling barrels can be freely disassembled and spliced, and the user can dynamically increase or decrease the number of sampling barrels according to the actual water depth; sampling is carried out through the plurality of sampling ports on the two side walls of the annular moving frame, so that the upper layer and the lower layer of water at the sampling depth are not sucked into the sampling when a large amount of sampling is carried out at the same position, and the sampling precision is improved.

Description

Technical Field

[0001] This invention belongs to the field of water quality sampling technology, and in particular relates to a hydrological testing and monitoring device with sampling function. Background Technology

[0002] Water quality sampling is a core component of hydrological monitoring, especially the acquisition of stratified samples at different depths to analyze the vertical distribution of water quality. Traditional sampling devices often require repeated lowering of the equipment to collect water samples at various depths, which is cumbersome and makes it difficult to ensure the spatiotemporal consistency of the samples. Therefore, an integrated device capable of performing multi-layer sampling in one operation has become a key requirement for improving monitoring efficiency.

[0003] In the prior art, although water quality monitoring devices with stratified sampling functions have emerged (such as those described in patent CN222070237U), which can achieve multiple samplings in one descent by pre-setting multiple fixed sampling chambers, there are still significant drawbacks: First, the number of sampling layers is limited by the initial design of the device, the number of sampling tubes is fixed and cannot be expanded, and the number of samplings cannot be flexibly increased or decreased according to the actual water depth; Second, single-point concentrated sampling is prone to water layer mixing. When the sample volume at the same depth is large, continuous suction at the sampling port will disturb the surrounding water, causing the upper or lower water to mix into the target water layer sample, which seriously affects the accuracy of stratified sampling.

[0004] The aforementioned problems limit the accuracy and adaptability of water quality monitoring. Especially in scenarios with complex hydrological environments (such as waters with varying depths) or requiring high-precision stratified comparisons, existing devices struggle to balance flexibility (adjustable number of layers) and accuracy (avoiding inter-layer interference). Therefore, there is an urgent need for a device that supports freely expandable sampling layers and enables multi-point distributed sampling at the same depth to improve the reliability and efficiency of hydrological measurements. Summary of the Invention

[0005] The purpose of this invention is to provide a hydrological measurement and monitoring device with sampling function, in order to solve the above-mentioned technical problems.

[0006] This invention is implemented as follows: a hydrological measurement and monitoring device with sampling function includes a telescopic rod and a cylindrical mounting base fixed to the bottom of the telescopic rod. It also includes: multiple cylindrical sampling cylinders connected to the bottom of the cylindrical mounting base via plug-in components; the cylindrical mounting base and the multiple cylindrical sampling cylinders constitute a sampling column; each of the multiple cylindrical sampling cylinders has a sampling cavity arranged along its length; a through sampling pipe is arranged on the side wall of each cylindrical sampling cylinder at the bottom of the sampling cavity; a one-way valve is installed inside the sampling pipe; and an annular sampling frame is slidably connected to the sampling column along its length. The annular sampling frame includes an annular movable frame one and an annular movable frame two. The inner wall of the annular movable frame two is provided with a water inlet hole, and multiple sampling ports are evenly provided on the side wall of the annular movable frame two. An injection sampling component is provided inside the annular sampling frame, and a moving mechanism is provided on the sampling column. The moving mechanism is used to drive the annular sampling frame to move up and down and to drive the annular movable frame one and the annular movable frame two to move back and forth. When the annular movable frame one and the annular movable frame two move back and forth, the injection sampling component injects sample water into the sampling chamber through the water inlet hole, multiple sampling ports and sampling pipe.

[0007] A further technical solution includes a piston fixed at the bottom of a ring-shaped moving frame and a compression chamber at the top of a ring-shaped moving frame. The piston is slidably connected to the compression chamber. Piston plates are slidably connected to the sampling chamber along its length. A compression spring is fixed at the top of the piston plate, and the end of the compression spring is fixed at the top of the sampling chamber. The compression chamber is connected to a water inlet and multiple sampling ports, and a one-way valve is fixed in each of the multiple sampling ports.

[0008] A further technical solution includes two insertion grooves at the bottom of both the cylindrical mounting base and the cylindrical sampling cylinder, and two insertion protrusions fixed at the top of the cylindrical sampling cylinder; a locking groove is provided on the side wall of one of the insertion protrusions; a horizontal guide groove is provided inside both the cylindrical mounting base and the cylindrical sampling cylinder; an insertion slider is slidably connected in the guide groove; one end of the insertion slider cooperates with the locking groove; and a compression spring and a magnetic block are fixed at the other end of the insertion slider.

[0009] A further technical solution includes two rotary drive shafts, each driven by a motor. Each rotary drive shaft includes a first rotary shaft and at least one second rotary shaft. A first spliced ​​spiral groove is provided on one side wall of the first rotary shaft, and a second spliced ​​spiral groove is provided on the second rotary shaft. The first and second spliced ​​spiral grooves constitute a spiral guide groove. Two guide mounting grooves are evenly distributed on the side wall of the sampling column, and the two rotary drive shafts are respectively positioned within the two guide mounting grooves. The mounting groove includes a cylindrical mounting base and a strip mounting groove on the side wall of the cylindrical sampling tube. Rotary shaft one is rotatably connected in the strip mounting groove of the cylindrical mounting base, and rotary shaft two is rotatably connected in the strip mounting groove of the cylindrical sampling tube. Guide protrusion one is fixed on the inner wall of the annular moving frame one and the annular moving frame two. The two guide protrusions one are slidably connected in the two guide mounting grooves respectively, and the two guide protrusions one are slidably connected in the two spiral guide grooves respectively. One rotary shaft one and at least one rotary shaft two of the rotary drive shaft are connected by a positioning connection assembly.

[0010] A further technical solution includes a positioning connection assembly comprising a first connecting groove provided at the bottom of both rotating shaft one and rotating shaft two along their axial center, and a second connecting groove provided at the bottom of both rotating shaft one and rotating shaft two. A positioning protrusion is fixedly provided at the top of rotating shaft two along its axial center, the positioning protrusion cooperating with the first connecting groove. A guide groove is provided at the top of rotating shaft two, and a connecting slider is vertically slidably connected in the guide groove two. A compression spring is fixedly provided at the bottom of the connecting slider, and the end of the compression spring is fixedly provided in the second connecting groove.

[0011] A further technical solution includes horizontal guide grooves three on the two side walls of the annular moving frame, a sealing slider slidably connected within the guide grooves three, a tension spring fixed at the end of the sealing slider away from the sampling column, the end of the tension spring fixed in the guide grooves three, a telescopic pipe on the sealing slider, the telescopic pipe slidably connected within the water inlet, a strip-shaped sink groove at the top of the sealing slider, an elastic pull rope fixed within the strip-shaped sink groove, guide grooves on the annular moving frame one and the annular moving frame two, and the end of the elastic pull rope extending into the guide groove and fixedly connected to the annular moving frame one.

[0012] A further technical solution is that a columnar frame is fixed on the two side walls of the annular moving frame at the sampling port, a filter screen is fixed on the side wall of the columnar frame, a gear is rotatably connected to the side wall of the columnar frame, a brush rod is fixed on the gear and contacts the filter screen, and a rack is fixed on one side wall of the annular moving frame and meshes with the gear.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0014] 1. Through modular plug-in structure design, the cylindrical sampling tube can be freely disassembled and assembled. Users can dynamically increase or decrease the number of sampling tubes according to the actual water depth, breaking through the limitation of fixed number of layers in traditional devices. For example, only 1 to 2 sampling tubes need to be installed in shallow water areas, while more than 5 can be installed in deep water areas, significantly improving the adaptability of the equipment to different hydrological environments;

[0015] 2. Sampling is performed through multiple sampling ports on the two side walls of the annular moving frame, thereby sampling water at different locations at the same depth, increasing the sampling range at the same depth. Furthermore, sampling at multiple locations at the same water depth can prevent the upper and lower layers of water from being sucked into the sampling when sampling a large number of samples at the same location, thus improving the sampling accuracy.

[0016] 3. The moving mechanism is multifunctional and can be used to control the ring moving frame to cooperate with different cylindrical sampling tubes, as well as to control the corresponding cylindrical sampling tubes to take samples. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a hydrological measurement and monitoring device with sampling function provided by the present invention;

[0018] Figure 2 Provided by the present invention Figure 1 A schematic diagram of the structure after removing the annular sampling frame;

[0019] Figure 3 Provided by the present invention Figure 1 Schematic diagram of the structure of the central column mounting base and the column sampling tube;

[0020] Figure 4 Provided by the present invention Figure 3 A schematic diagram of the internal structure of the central column mounting base and the column sampling tube from a main viewing angle;

[0021] Figure 5 Provided by the present invention Figure 1 Schematic diagram of the structure of the central ring sampling frame;

[0022] Figure 6 Provided by the present invention Figure 5 Schematic diagram of the structure of the second circular moving frame;

[0023] Figure 7 Provided by the present invention Figure 5 A schematic diagram of the structure of the central ring-shaped moving frame;

[0024] Figure 8 Provided by the present invention Figure 5 Schematic diagram of the internal structure of the first and second annular moving frames;

[0025] Figure 9 Provided by the present invention Figure 8A magnified structural diagram of A in the middle;

[0026] Figure 10 Provided by the present invention Figure 5 A magnified structural diagram of B in the diagram;

[0027] Figure 11 Provided by the present invention Figure 3 A schematic diagram of the internal structure of the central column mounting base and the column sampling tube from the left view angle;

[0028] Figure 12 Provided by the present invention Figure 11 A magnified structural diagram of C;

[0029] Figure 13 Provided by the present invention Figure 1 A schematic diagram of the structure of the two rotary drive shafts;

[0030] Figure 14 Provided by the present invention Figure 13 Schematic diagram of the internal structure of rotating shaft one and rotating shaft two.

[0031] In the attached diagram: 101, cylindrical mounting base; 102, cylindrical sampling cylinder; 103, sampling chamber; 104, compression spring one; 105, piston plate; 106, sampling pipe; 107, pressure balance hole; 108, annular moving frame one; 109, annular moving frame two; 110, compression chamber; 111, sampling port; 112, water inlet; 113, piston part;

[0032] 2. Plug-in assembly; 201. Plug-in countersunk groove; 202. Plug-in protrusion; 203. Locking groove; 204. Guide groove one; 205. Plug-in slider; 206. Compression spring two; 207. Magnetic block;

[0033] 3. Moving mechanism; 301. Rotating shaft one; 302. Rotating shaft two; 303. Interlocking spiral countersunk groove one; 304. Interlocking spiral countersunk groove two; 305. Guide protrusion; 306. Strip mounting groove; 307. Connecting countersunk groove one; 308. Connecting countersunk groove two; 309. Guide groove two; 310. Connecting slider; 312. Positioning protrusion; 311. Compression spring three;

[0034] 401. Guide groove three; 402. Sealing slider; 403. Tension spring; 404. Strip groove; 405. Guide groove; 406. Elastic pull rope; 407. Telescopic pipe; 501. Column frame; 502. Filter screen; 503. Gear; 504. Rack; 505. Brush rod. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0036] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0037] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, an embodiment of the present invention provides a hydrological measurement and monitoring device with sampling function, including a telescopic rod, which can be an electric telescopic rod, and a cylindrical mounting base 101 fixed at the bottom of the telescopic rod. The top of the telescopic rod is mounted on the hydrological measurement and monitoring device. It also includes: multiple cylindrical sampling cylinders 102 connected to the bottom of the cylindrical mounting base 101 via a plug-in assembly 2. The cylindrical mounting base 101 and the multiple cylindrical sampling cylinders 102 constitute a sampling column. Every two cylindrical sampling cylinders 102 are connected by a plug-in assembly 2. The cylindrical mounting base 101 and the cylindrical sampling cylinder 102 adjacent to its bottom are also connected by a plug-in assembly 2. Each of the multiple cylindrical sampling cylinders 102 has a sampling cavity 103 arranged along its length direction. A through sampling pipe 10 is provided on the side wall of each cylindrical sampling cylinder 102 at the bottom of the sampling cavity 103. 6. A one-way valve is installed inside the sampling pipe 106; an annular sampling frame is slidably connected to the sampling column along its length direction. The annular sampling frame includes an annular moving frame one 108 and an annular moving frame two 109. A water inlet hole 112 is provided on the inner wall of the annular moving frame two 109, and multiple sampling ports 111 are evenly provided on the side wall of the annular moving frame two 109; a pressure injection sampling component is provided inside the annular sampling frame, and a moving mechanism 3 is provided on the sampling column. The moving mechanism 3 is used to drive the annular sampling frame to move up and down and to drive the annular moving frame one 108 and the annular moving frame two 109 to move back and forth. When the annular moving frame one 108 and the annular moving frame two 109 move back and forth, the pressure injection sampling component injects sample water into the sampling chamber 103 through the water inlet hole 112, multiple sampling ports 111 and the sampling pipe 106.

[0038] In this embodiment of the invention, when water sampling is required, the telescopic rod drives the cylindrical mounting base 101 to move downwards, and the cylindrical mounting base 101 drives multiple cylindrical sampling cylinders 102 to move downwards until they reach the sampling depth. Then, the moving mechanism 3 drives the annular sampling frame to move up and down until the water inlet 112 coincides with the sampling pipe 106 on one of the cylindrical sampling cylinders 102. The moving mechanism 3 then drives the annular moving frame one 108 and the annular moving frame two 109 to reciprocate. The injection sampling assembly injects sample water into the sampling chamber 103 through the water inlet 112, multiple sampling ports 111, and the sampling pipe 106. Sampling is then performed through the multiple sampling ports 111 on the side wall of the annular moving frame two 109, thereby sampling water at different locations at the same depth. This invention increases the sampling range at the same depth and allows sampling at multiple locations at the same water depth. This avoids the upper and lower layers of water being sucked into the sampling when sampling a large number of samples at the same location, thereby improving sampling accuracy. After sampling at this depth, the moving mechanism 3 drives the annular sampling frame to move up and down until the water inlet 112 coincides with the sampling pipe 106 on the next cylindrical sampling cylinder 102, facilitating the next sampling. The invention can select different numbers of cylindrical sampling cylinders 102 for installation according to actual use. By moving the annular sampling frame up and down, the water inlet 112 coincides with the sampling pipe 106 on different cylindrical sampling cylinders 102, thereby enabling multiple samplings at different water depths in one sampling operation, thus improving sampling efficiency.

[0039] like Figure 1 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, in a preferred embodiment of the present invention, the injection sampling assembly includes a piston portion 113 fixed at the bottom of an annular moving frame 108 and a compression chamber 110 disposed at the top of an annular moving frame 2 109. The piston portion 113 is slidably connected within the compression chamber 110, and the annular moving frame 108 is located above the annular moving frame 2 109. Piston plates 105 are slidably connected along the length of the sampling chamber 103. A compression spring 104 is fixed at the top of the piston plate 105, and the end of the compression spring 104 is fixed at the top of the sampling chamber 103. A through pressure balance hole 107 is disposed on the side wall of the cylindrical sampling cylinder 102 at the top of the sampling chamber 103. The compression chamber 110 communicates with a water inlet 112 and multiple sampling ports 111, and a one-way valve is fixedly disposed within each of the multiple sampling ports 111.

[0040] In this embodiment of the invention, the sampling pipe 106 coincides with the water inlet 112. During sampling, the moving mechanism 3 drives the first annular moving frame 108 to move upward, while the second annular moving frame 109 remains stationary. The first annular moving frame 108 drives the piston part 113 away from the compression chamber 110, increasing the space inside the compression chamber 110 and generating negative pressure. This negative pressure draws water into the compression chamber 110 through the one-way valve of the sampling port 111. When the first annular moving frame 108 approaches the second annular moving frame 109, the first annular moving frame 108 drives the piston part 113 to enter... The water in the compression chamber 110 is squeezed and then enters the bottom of the sampling chamber 103 through the water inlet 112, the telescopic pipe 407, the sampling pipe 106, and the one-way valve in the sampling pipe 106. The water pressure at the bottom of the sampling chamber 103 overcomes the elasticity of the sampling chamber 103 and moves upward. The air or water above the sampling chamber 103 is compressed and discharged from the pressure balance hole 107. Water sampling is achieved by the reciprocating movement of the annular moving frame 108 relative to the annular moving frame 2 109.

[0041] like Figure 2 , Figure 3 , Figure 11 and Figure 12 As shown, in a preferred embodiment of the present invention, the plug-in assembly 2 includes two plug-in grooves 201 at the bottom of both the cylindrical mounting base 101 and the cylindrical sampling cylinder 102, and two plug-in protrusions 202 fixed at the top of the cylindrical sampling cylinder 102; a locking groove 203 is provided on the side wall of one of the plug-in protrusions 202; a horizontal guide groove 204 is provided in both the cylindrical mounting base 101 and the cylindrical sampling cylinder 102, and a plug-in slider 205 is slidably connected in the guide groove 204; one end of the plug-in slider 205 cooperates with the locking groove 203, and a compression spring 206 and a magnetic block 207 are fixedly provided at the other end of the plug-in slider 205, both of which are located in the guide groove 204.

[0042] In this embodiment of the invention, when the cylindrical mounting base 101 is connected to the cylindrical sampling cylinder 102, the two insertion protrusions 202 at the top of the cylindrical sampling cylinder 102 are respectively inserted into the two cylindrical mounting bases 101 at the bottom of the cylindrical mounting base 101, and the compression spring 206 pushes the insertion slider 205, thereby causing the insertion slider 205 to be inserted into the locking groove 203 of the insertion protrusion 202 at the top of the cylindrical sampling cylinder 102, so as to realize the fixed connection between the cylindrical mounting base 101 and the cylindrical sampling cylinder 102.

[0043] When two adjacent cylindrical sampling cylinders 102 are connected, the two insertion protrusions 202 at the top of the lower cylindrical sampling cylinder 102 are respectively inserted into the two cylindrical mounting seats 101 at the bottom of the upper cylindrical sampling cylinder 102, and the compression spring 206 pushes the insertion slider 205, thereby causing the insertion slider 205 to be inserted into the locking groove 203 of the insertion protrusion 202 at the top of the lower cylindrical sampling cylinder 102, thus achieving a fixed connection between the two adjacent cylindrical sampling cylinders 102. When it is necessary to disassemble the cylindrical sampling cylinder 102, a magnet is used to approach the cylindrical sampling cylinder 102 or the cylindrical mounting seat 101 is located at the position of the magnetic block 207. The magnet attracts the magnetic block 207 through magnetic force. The magnetic block 207 overcomes the elastic force of the compression spring 206 and drives the insertion slider 205 to disengage from the locking groove 203.

[0044] like Figure 1 , Figure 3 , Figure 5 , Figure 6 , Figure 7 , Figure 13 and Figure 14 As shown, in a preferred embodiment of the present invention, the moving mechanism 3 includes two rotary drive shafts, each driven by a motor. Each rotary drive shaft includes a first rotary shaft 301 and at least one second rotary shaft 302. A spliced ​​spiral groove 303 is provided on the side wall of the first rotary shaft 301, and a spliced ​​spiral groove 304 is provided on the second rotary shaft 302. The first and second spiral grooves 303 and 304 constitute a spiral guide groove. Two guide mounting grooves are evenly provided on the side wall of the sampling column, and the two rotary drive shafts are respectively disposed within the two guide mounting grooves. The guide mounting grooves include cylindrical... Both the mounting base 101 and the cylindrical sampling cylinder 102 have strip-shaped mounting grooves 306 on their side walls. Rotary shaft one 301 is rotatably connected to the strip-shaped mounting groove 306 of the cylindrical mounting base 101, and rotating shaft two 302 is rotatably connected to the strip-shaped mounting groove 306 of the cylindrical sampling cylinder 102. Guide protrusions one 305 are fixed on the inner walls of the annular moving frame one 108 and the annular moving frame two 109. The two guide protrusions one 305 are slidably connected to the two guide mounting grooves, and the two guide protrusions one 305 are slidably connected to the two spiral guide grooves. One rotating shaft one 301 and at least one rotating shaft two 302 of the rotating drive shaft are connected by a positioning connection assembly.

[0045] In this embodiment of the invention, when the annular moving frame 108 and the annular moving frame 2 109 move up and down, the two motors drive the two rotary drive shafts (i.e., one rotary shaft 301 and at least one rotary shaft 2 302) to rotate. Under the guidance of the two guide mounting grooves on the side wall of the sampling column (i.e., one cylindrical mounting base 101 and at least one cylindrical sampling cylinder 102), the two rotary drive shafts push the guide protrusion 305 through the spiral guide groove, thereby causing the two guide protrusions 305 to drive the annular moving frame 108 and the annular moving frame 2 109 to move up or down synchronously, thereby adjusting the position of the annular sampling frame (i.e., the annular moving frame 108 and the annular moving frame 2 109) on the sampling column.

[0046] When the sampling pipe 106 is moved to coincide with the water inlet 112 and sampling water is injected into the sampling chamber 103, one of the rotary drive shafts is driven to rotate by one of the motors, while the other rotary drive shaft remains stationary. Under the guidance of one of the guide mounting grooves on the side wall of the sampling column, one of the rotary drive shafts pushes one of the guide protrusions 305 through the spiral guide groove. One of the guide protrusions 305 drives the annular moving frame 108 to move upward. The annular moving frame 108 drives the piston part 113 away from the compression chamber 110, increasing the space inside the compression chamber 110 and producing... A negative pressure is generated, and the negative pressure draws water into the compression chamber 110 through the one-way valve of the sampling port 111. When the annular moving frame one 108 approaches the annular moving frame two 109, the annular moving frame one 108 drives the piston part 113 into the compression chamber 110 and squeezes the water in the compression chamber 110. The water in the compression chamber 110 enters the bottom of the sampling chamber 103 through the water inlet 112, the telescopic pipe 407, the sampling pipe 106, and the one-way valve in the sampling pipe 106. Water sampling is achieved by the reciprocating movement of the annular moving frame one 108 relative to the annular moving frame two 109.

[0047] like Figure 1 , Figure 13 and Figure 14 As shown, in a preferred embodiment of the present invention, the positioning connection assembly includes a first connecting groove 307 provided at the bottom of a first rotating shaft 301 and a second rotating shaft 302 along their axial center, and a second connecting groove 308 provided at the bottom of both the first rotating shaft 301 and the second rotating shaft 302. A positioning protrusion 312 is fixedly provided at the top of the second rotating shaft 302 along its axial center, and the positioning protrusion 312 cooperates with the first connecting groove 307. A second guide groove 309 is provided at the top of the second rotating shaft 302, and a connecting slider 310 is vertically slidably connected in the second guide groove 309. The connecting slider 310 cooperates with the second connecting groove 308. A third compression spring 311 is fixedly provided at the bottom of the connecting slider 310, and the end of the third compression spring 311 is fixedly provided in the second connecting groove 308.

[0048] In this embodiment of the invention, when the cylindrical sampling cylinder 102 is connected to the cylindrical mounting base 101, the positioning protrusion 312 and the connecting slider 310 at the top of the rotating shaft 2 302 are respectively inserted into the connecting groove 307 and the connecting groove 308 at the bottom of the rotating shaft 1 301, thereby realizing the transmission connection between the rotating shaft 1 301 and the rotating shaft 2 302; when the two cylindrical sampling cylinders 102 are connected, the positioning protrusion 312 and the connecting slider 310 at the top of the lower rotating shaft 2 302 are respectively inserted into the connecting groove 307 and the connecting groove 308 at the bottom of the upper rotating shaft 2 302, thereby realizing the transmission connection between the two adjacent rotating shafts 2 302.

[0049] like Figure 1 , Figure 3 , Figure 6 , Figure 8 and Figure 9 As shown, in a preferred embodiment of the present invention, a horizontal guide groove 401 is provided on the side wall of the second annular moving frame 109. A sealing slider 402 is slidably connected in the guide groove 401. A tension spring 403 is fixed at one end of the sealing slider 402 away from the sampling column. The end of the tension spring 403 is fixed in the guide groove 401. A telescopic pipe 407 is provided on the sealing slider 402. The telescopic pipe 407 is slidably connected in the water inlet 112. A strip-shaped sink 404 is provided on the top of the sealing slider 402. An elastic pull rope 406 is fixed in the strip-shaped sink 404. A guide groove 405 is provided on the first annular moving frame 108 and the second annular moving frame 109. The end of the elastic pull rope 406 extends into the guide groove 405 and is fixedly connected to the first annular moving frame 108.

[0050] In this embodiment of the invention, to address the problem of water leakage during sampling due to a gap between the inner wall of the annular moving frame 109 and the cylindrical sampling cylinder 102, the following measures are taken: When the water inlet 112 moves to coincide with the sampling pipe 106, the annular moving frame 108 moves upward and away from the annular moving frame 109. The annular moving frame 108 pulls one end of the elastic rope 406, which is an elastic telescopic rope. Under the guidance of the guide groove 405, the other end of the elastic rope 406... Pulling the sealing slider 402 causes it to overcome the elastic force of the tension spring 403 and move towards the side wall of the cylindrical sampling cylinder 102. The sealing slider 402 drives the telescopic pipe 407 to move within the water inlet 112 until the sealing slider 402 adheres to the side wall of the cylindrical sampling cylinder 102. As the annular moving frame 108 continues to move away from the annular moving frame 2 109, the elastic pull rope 406 is stretched. At this time, the sampling chamber 103 connects with the compression chamber through the sampling pipe 106, the telescopic pipe 407, and the water inlet 112. When the annular moving frame 108 moves the piston 113 away from the compression chamber 110, the space inside the compression chamber 110 increases and a negative pressure is generated. The negative pressure draws water into the compression chamber 110 through the one-way valve of the sampling port 111. When the annular moving frame 108 approaches the annular moving frame 109, the annular moving frame 108 moves the piston 113 into the compression chamber 110 and squeezes the water inside the compression chamber 110. The water in the compression chamber 110 flows through the water inlet 112 and the telescopic pipe. 407. The sampling pipe 106 and the one-way valve inside the sampling pipe 106 enter the sampling chamber 103. At this time, the elastic pull rope 406 gradually contracts until it is fully contracted. The tension spring 403 pulls the sealing slider 402 to move in the opposite direction and reset. The sealing slider 402 does not contact the side wall of the cylindrical sampling cylinder 102. When the annular moving frame 108 moves relative to the annular moving frame 2 109 to perform sampling, the sealing slider 402 is triggered to move back and forth, thereby avoiding sample leakage during sampling.

[0051] like Figure 5 , Figure 6 and Figure 10 As shown, in a preferred embodiment of the present invention, a columnar frame 501 is fixedly provided on the side wall of the second annular moving frame 109 at the sampling port 111. A filter screen 502 is fixedly provided on the side wall of the columnar frame 501. A gear 503 is rotatably connected to the side wall of the columnar frame 501. A brush rod 505 is fixedly provided on the gear 503 and contacts the filter screen 502. A rack 504 is fixedly provided on the side wall of the first annular moving frame 108 and meshes with the gear 503.

[0052] In this embodiment of the invention, the filter screen 502 is used to filter large particulate impurities in the water. When the annular moving frame 108 approaches or moves away from the annular moving frame 2 109, the annular moving frame 108 drives the rack 504 to rotate relative to the gear 503. The rack 504 pushes the gear 503 to rotate, and the gear 503 drives the brush rod 505 to rotate. The brush rod 505 moves relative to the column frame 501 and the filter screen 502, thereby cleaning the filter screen 502 and preventing impurities from accumulating on the filter screen 502. Furthermore, when sampling is performed by the relative movement of the annular moving frame 108 and the annular moving frame 2 109, the brush rod 505 is driven to clean the filter screen 502.

[0053] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A hydrological measurement and monitoring device with sampling function, comprising a telescopic rod and a cylindrical mounting base fixed to the bottom of the telescopic rod, characterized in that, Also includes: The bottom of the cylindrical mounting base is connected to multiple cylindrical sampling cylinders via plug-in components, and the cylindrical mounting base and the multiple cylindrical sampling cylinders constitute a sampling column. Each of the multiple cylindrical sampling tubes has a sampling chamber along its length. A sampling pipe is installed on the side wall of the cylindrical sampling tube at the bottom of the sampling chamber, and a one-way valve is installed in the sampling pipe. A ring-shaped sampling frame is slidably connected to the sampling column along its length. The ring-shaped sampling frame includes a ring-shaped movable frame one and a ring-shaped movable frame two. A water inlet hole is provided on the inner wall of the ring-shaped movable frame two, and multiple sampling ports are evenly provided on the side wall of the ring-shaped movable frame two. The ring sampling frame is equipped with a pressure injection sampling component, and the sampling column is equipped with a moving mechanism. The moving mechanism is used to drive the ring sampling frame to move up and down and to drive the first ring moving frame to reciprocate relative to the second ring moving frame. When the first ring moving frame reciprocates relative to the second ring moving frame, the pressure injection sampling component injects sample water into the sampling chamber through the water inlet, multiple sampling ports and sampling pipe. The moving mechanism includes two rotary drive shafts, which are driven to rotate by two motors respectively. Each rotary drive shaft includes a rotary shaft one and at least one rotary shaft two. A spliced ​​spiral groove one is provided on one side wall of the rotary shaft, and a spliced ​​spiral groove two is provided on the rotary shaft two. The spliced ​​spiral groove one and the spliced ​​spiral groove two constitute a spiral guide groove. Two guide mounting grooves are evenly arranged on the side wall of the sampling column, and two rotary drive shafts are respectively set in the two guide mounting grooves. The guide mounting grooves include the cylindrical mounting base and the strip mounting grooves set on the side wall of the cylindrical sampling cylinder. Rotary shaft one is rotatably connected to the strip mounting groove of the cylindrical mounting base, and rotary shaft two is rotatably connected to the strip mounting groove of the cylindrical sampling cylinder. Guide protrusion 1 is fixed on the inner wall of both the annular movable frame 1 and the annular movable frame 2. The two guide protrusions 1 are slidably connected in the two guide mounting grooves respectively, and the two guide protrusions 1 are slidably connected in the two spiral guide grooves respectively. One rotating shaft 1 and at least one rotating shaft 2 of the rotating drive shaft are connected by a positioning connection assembly. The positioning and connecting assembly includes a connecting groove 1 provided at the bottom of both rotating shaft 1 and rotating shaft 2 along their axis, and a connecting groove 2 provided at the bottom of both rotating shaft 1 and rotating shaft 2. A positioning protrusion is fixed at the top of rotating shaft 2 along its axis, and the positioning protrusion cooperates with the connecting groove 1. A guide groove 2 is provided at the top of rotating shaft 2, and a connecting slider is vertically slidably connected in the guide groove 2. A compression spring 3 is fixed at the bottom of the connecting slider, and the end of the compression spring 3 is fixed in the connecting groove 2. The injection sampling assembly includes a piston fixed at the bottom of a ring-shaped moving frame one and a compression chamber disposed at the top of a ring-shaped moving frame two. The piston is slidably connected in the compression chamber, and the ring-shaped moving frame one is located above the ring-shaped moving frame two. A piston plate is slidably connected along the length of the sampling chamber. A compression spring is fixed on the top of the piston plate, and the end of the compression spring is fixed on the top of the sampling chamber. The compression chamber is connected to the water inlet and multiple sampling ports, and each of the multiple sampling ports is equipped with a one-way valve.

2. The hydrological measurement and monitoring device with sampling function according to claim 1, characterized in that, The plug-in assembly includes two plug-in grooves at the bottom of both the cylindrical mounting base and the cylindrical sampling tube, and two plug-in protrusions fixed at the top of the cylindrical sampling tube; One of the insertion protrusions has a locking groove on its side wall. Both the cylindrical mounting base and the cylindrical sampling tube have horizontal guide grooves. An insertion slider is slidably connected in the guide groove. One end of the insertion slider is engaged with the locking groove, and the other end of the insertion slider is fixed with a compression spring and a magnetic block.

3. The hydrological measurement and monitoring device with sampling function according to claim 1, characterized in that, A horizontal guide groove 3 is provided on the two side walls of the annular moving frame. A sealing slider is slidably connected in the guide groove 3. A tension spring is fixed at the end of the sealing slider away from the sampling column. The end of the tension spring is fixed in the guide groove 3. A telescopic pipe is provided on the sealing slider. The telescopic pipe is slidably connected in the water inlet. A strip-shaped sink is provided on the top of the sealing slider. An elastic pull rope is fixed in the strip-shaped sink. Guide grooves are provided on the annular moving frame 1 and the annular moving frame 2. The end of the elastic pull rope extends into the guide groove and is fixedly connected to the annular moving frame 1.

4. The hydrological measurement and monitoring device with sampling function according to claim 1, characterized in that, A columnar frame is fixed on both side walls of the annular moving frame at the sampling port. A filter screen is fixed on the side wall of the columnar frame. A gear is rotatably connected to the side wall of the columnar frame. A brush rod is fixed on the gear and contacts the filter screen. A rack is fixed on one side wall of the annular moving frame and meshes with the gear.

Images