Small watershed river sediment monitoring device

Abstract

The utility model discloses a small-watershed river sediment monitoring device, belongs to the technical field of river sediment monitoring, and aims to solve the problems that an existing river sediment monitoring station is large in occupied area and inconvenient to arrange near a small-watershed river. The monitoring device comprises a sampling pipe fixing unit, a water inlet elbow pipe, a water inlet corrugated pipe, a pre-buried water passing pipe, a first water suction pump, a transition corrugated pipe, a river bank foundation pit, a monitoring box body, a weighing device, a mounting boss, a liquid pumping unit and a heating evaporation unit, after water and sediment in the collected water body sample are separated twice through the liquid pumping unit and the heating evaporation unit, the accurate sediment content is obtained to the maximum degree, the accuracy of sediment monitoring of the small-watershed river channel is improved, and the device is mainly used for monitoring the sediment of the small-watershed river channel.

Description

TECHNICAL FIELD

[0001] The utility model belongs to river channel silt monitoring technical field, concretely relates to a small watershed river channel silt monitoring device. BACKGROUND

[0002] The river channel silt monitoring in the basin is an important detection means for determining the water and soil loss in the basin. Under normal circumstances, a monitoring station is established at the river embankment of the basin. The water sample in the basin is collected periodically, and the silt is separated and treated, and measured. Then, the silt content in the basin is calculated. The water and soil loss in the basin is determined according to the silt content in the basin. However, the existing device for treating silt in the water sample is complex, which leads to a large area of the general river channel silt monitoring station and high cost. For small basins, the riverbank area on both sides of the river is limited, and it is not convenient to arrange a large river channel silt monitoring station. Therefore, only part of the water sample can be collected by the detector to the nearby hydrological station for detection, which increases the difficulty of small watershed river channel silt monitoring. Therefore, it is very practical to develop a small watershed river channel silt monitoring device. SUMMARY

[0003] The utility model discloses a kind of small watershed river channel silt monitoring devices to solve the problem that the existing river channel silt monitoring station occupies large area, it is inconvenient to arrange near small watershed river channel, and further provide a kind of small watershed river channel silt monitoring device;

[0004] A small watershed river channel silt monitoring device, the monitoring device includes a sampling tube fixing unit, a water inlet elbow pipe, a water inlet corrugated pipe, a pre-buried water pipe, a No. 1 water pump, an excessive corrugated pipe, a riverbank foundation pit, a monitoring box, a weighing device, a mounting boss, a liquid pumping unit and a heating evaporation unit.

[0005] The water inlet end of the water inlet elbow pipe is fixed on the riverbed of the monitoring river basin through the sampling pipe fixing unit, the water inlet end of the water inlet corrugated pipe is connected with the water outlet end of the water inlet elbow pipe, the water outlet end of the water inlet corrugated pipe is connected with the water inlet end of the pre-buried water running pipe, the pre-buried water running pipe is pre-buried in the riverbank foundation, the riverbank foundation is processed with a riverbank foundation pit on the side far away from the river, the water outlet end of the pre-buried water running pipe extends into the riverbank foundation pit, the inner bottom of the riverbank foundation pit is provided with a mounting boss on the side close to the river, a first water pump is fixed on the top of the mounting boss, the water outlet end of the pre-buried water running pipe is in communication with the water inlet end of the first water pump, the inner bottom of the riverbank foundation pit is also provided with a load cell, the load cell is located on the side of the mounting boss far away from the river, a monitoring box is located on the load cell, an excess corrugated pipe is arranged between the first water pump and the monitoring box, one end of the excess corrugated pipe is in communication with the water outlet end of the first water pump, the other end of the excess corrugated pipe is in communication with the water inlet end of the monitoring box, a liquid pumping unit is arranged on the side of the monitoring box far away from the mounting boss, the liquid pumping unit is provided with a rotatable and liftable water pumping end, the liquid pumping unit is used for pumping river water samples in the monitoring box, the water outlet end of the liquid pumping unit is in communication with a reflux water pipe pre-buried in the riverbank foundation, a heating and evaporation unit is mounted on the inner wall of the riverbank foundation pit, and the heating and evaporation unit is arranged correspondingly with the monitoring box, and the heating and evaporation unit is used for evaporating the moisture of the sediment samples in the monitoring box;

[0006] Further, the sampling pipe fixing unit comprises a fixing platform and a pipeline support, the fixing platform is inserted into the riverbed of the monitoring river basin through the pre-buried cone at the bottom, and the pipeline support is fixedly connected to the top of the fixing platform;

[0007] Further, the sampling pipe fixing unit comprises a fixing platform, a pipeline support, a pre-buried groove and a lifting motor, the pre-buried groove is pre-buried in the riverbed of the monitoring river basin, the fixing platform is arranged on the top opening of the pre-buried groove, the fixing platform is inserted into the riverbed of the monitoring river basin through the pre-buried cone at the bottom, the lifting motor is arranged in the pre-buried groove in the vertical direction, the lifting motor is fixedly connected to the inner bottom of the pre-buried groove through the fixed mounting seat, the piston rod end of the lifting motor extends above the fixing platform through the fixing platform, and the pipeline support is fixed to the piston rod end of the lifting motor, and the pipeline support can adjust the working height through the extension and retraction action of the piston rod in the lifting motor;

[0008] Further, a walking plate is buckled at the top opening of the pipe running gap between the mounting boss and the riverbank foundation pit, the top of the walking plate is coplanar with the top of the mounting boss, and a hole system matched with the pre-buried water running pipe is processed on the walking plate;

[0009] Further, a guide limiting groove is respectively processed on the side wall corresponding to the two ends of the monitoring box in the riverbank foundation pit, the two guide limiting grooves are oppositely arranged, the monitoring box is located on the load cell, and the two ends of the monitoring box are respectively embedded in one guide limiting groove.

[0010] Further, the lower part of the monitoring box is provided with a horizontally arranged box water inlet pipe, one end of the box water inlet pipe extends into the monitoring box and is arranged in communication with the monitoring box, the other end of the box water inlet pipe is arranged in communication with the other end of the excessive corrugated pipe, a first liquid level sensor is installed on the upper part of the inner wall of the monitoring box, and a humidity sensor is installed on the inner bottom of the monitoring box.

[0011] Further, the liquid pumping unit comprises a bottom turntable, a lifting hydraulic cylinder, a second water pump, a liquid pumping elbow unit and a return hose, the bottom turntable is arranged on the side away from the river channel of the mounting boss, and the bottom turntable is fixed to the inner bottom of the riverbank foundation via the mounting seat, the lifting hydraulic cylinder is arranged on and fixed to the top of the bottom turntable, the second water pump is fixedly installed on the end of the piston rod of the lifting hydraulic cylinder, the water outlet end of the liquid pumping elbow unit is arranged in communication with the liquid inlet end of the second water pump, the water inlet end of the liquid pumping elbow unit is arranged towards the open end of the monitoring box, the water inlet end of the return hose is arranged in communication with the liquid outlet end of the second water pump, and the water outlet end of the return hose is arranged in communication with the return water pipe pre-buried in the riverbank foundation.

[0012] Further, the liquid pumping elbow unit comprises a liquid pumping elbow main body, a filter sleeve and a second liquid level sensor, the water outlet end of the liquid pumping elbow main body is arranged in communication with the liquid inlet end of the second water pump, and the water inlet end of the liquid pumping elbow unit is arranged towards the open end of the monitoring box, the filter sleeve is sleeved on the water inlet end of the liquid pumping elbow unit, and the second liquid level sensor is vertically installed on the top end of the filter sleeve, and the detection end of the second liquid level sensor passes through the filter sleeve and is arranged towards the bottom of the monitoring box.

[0013] Further, the filter sleeve comprises a mounting sleeve body and a silt filter screen, the upper part of the inner hole wall of the mounting sleeve body is processed with a connecting internal thread, the outer circular wall of the water inlet end of the liquid pumping elbow main body is processed with a connecting external thread matched with the connecting internal thread, the mounting sleeve body is sleeved on the water inlet end of the liquid pumping elbow main body and is threadedly connected with the liquid pumping elbow main body, the silt filter screen is installed on the lower part of the inner hole wall of the mounting sleeve body, the outer circular wall of the mounting sleeve body is provided with a sensor mounting block, the sensor mounting block is integrally formed with the mounting sleeve body, the top of the sensor mounting block is processed with a mounting insertion hole, and the second liquid level sensor is vertically installed on the top of the sensor mounting block, and the detection end of the second liquid level sensor passes through the mounting insertion hole and is arranged towards the bottom of the monitoring box.

[0014] Further, the heating and evaporation unit comprises two electric heating assemblies, each electric heating assembly is correspondingly installed in a guide limiting groove, and each electric heating assembly comprises a mounting frame body and a plurality of electric heating pipes.

[0015] The beneficial effects of the present application relative to the prior art are:

[0016] 1. The small watershed river sediment monitoring device provided by the application is based on the design idea of a large river sediment monitoring station, has the functions of water body sample collection, water body sample sediment separation, and sediment content measurement in the water body sample, can realize monitoring of the sediment content of a small watershed river, and has a simpler structure, lower manufacturing cost, and smaller space occupation than a traditional river sediment monitoring station, and is more suitable for deployment near a small watershed river.

[0017] 2. The small watershed river sediment monitoring device provided by the application uses a water suction pipe with a filter screen to extract water samples from the top to the bottom, which can reduce the sedimentation of the drainage pipe and improve the work efficiency of sediment separation compared with the traditional method of setting a drainage hole at the bottom of the monitoring box.

[0018] 3. The small watershed river sediment monitoring device provided by the application further comprises a heating and evaporation device in the riverbank pit. After the liquid part of the water sample is mostly extracted by the liquid extraction unit, the remaining water sample is mainly composed of sediment, but there is still a small amount of water. The water cannot be further extracted and separated by the liquid extraction unit due to the influence of the sediment layer. Therefore, the detection box is heated by the heating and evaporation device, the water in the sediment layer is evaporated under the action of high temperature, the sediment in the water sample is dehydrated twice, and the accuracy of the sediment content in the water sample is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 The structure of the sediment monitoring device provided by the application is shown in the figure.

[0020] Figure 2 The state of the water sampling of the sediment monitoring device provided by the application is shown in the figure.

[0021] Figure 3 The state of the sediment separation of the sediment monitoring device provided by the application is shown in the figure.

[0022] Figure 4 The arrangement of the electric heating assembly in the sediment monitoring device provided by the application is shown in the figure.

[0023] Figure 5 The structure of the liquid extraction unit in the sediment monitoring device provided by the application is shown in the figure.

[0024] Figure 6 The structure of the monitoring box in the sediment monitoring device provided by the application is shown in the figure.

[0025] Figure 7 The main section of the sampling tube fixing unit in the sediment monitoring device provided by the application is shown in the figure.

[0026] Figure 8 This is a schematic cross-sectional view of the sampling tube fixing unit in the sediment monitoring device provided in this application;

[0027] Figure 9 for Figure 4 A magnified view of a section at point A in the middle;

[0028] Figure 10 for Figure 2 A magnified view of a section at point B in the middle;

[0029] Figure 11 This is a schematic diagram of the filter sleeve in the sediment monitoring device provided in this application. Detailed Implementation

[0030] Specific implementation method one: Combining Figures 1 to 11 This embodiment describes a small watershed river sediment monitoring device. The monitoring device includes a sampling tube fixing unit 1, an inlet elbow pipe 2, an inlet corrugated pipe 3, a pre-buried water pipe 41, a No. 1 water pump 5, a transition corrugated pipe 6, a riverbank foundation pit 7, a monitoring box 8, a weighing device 9, a mounting boss 10, a liquid extraction unit, and a heating and evaporation unit.

[0031] The inlet end of the inlet elbow pipe 2 is fixed to the bottom of the river in the monitored watershed via the sampling pipe fixing unit 1. The inlet end of the inlet corrugated pipe 3 is connected to the outlet end of the inlet elbow pipe 2, and the outlet end of the inlet corrugated pipe 3 is connected to the inlet end of the pre-embedded water pipe 41. The pre-embedded water pipe 41 is embedded in the riverbank foundation 4. A riverbank pit 7 is formed on the side of the riverbank foundation 4 away from the river. The outlet end of the pre-embedded water pipe 41 extends into the riverbank pit 7. An installation boss 10 is provided on the inner bottom of the riverbank pit 7 near the river. A first pump 5 is fixed on the top of the installation boss 10. The outlet end of the pre-embedded water pipe 41 is connected to the inlet end of the first pump 5. A weighing device 9 is also installed on the inner bottom of the riverbank pit 7. The weighing device 9 is located away from the installation boss 10. On one side of the river, the monitoring box 8 is located on the weighing device 9. The transition corrugated pipe 6 is set between the first water pump 5 and the monitoring box 8. One end of the transition corrugated pipe 6 is connected to the outlet of the first water pump 5, and the other end of the transition corrugated pipe 6 is connected to the inlet of the monitoring box 8. The liquid extraction unit is set on the side of the monitoring box 8 away from the mounting boss 10. The liquid extraction unit is equipped with a rotatable and liftable pumping end. The liquid extraction unit is used to extract river water samples from the monitoring box 8. The drain end of the liquid extraction unit is connected to the return water pipe pre-buried in the riverbank foundation 4. The heating and evaporation unit is installed on the inner wall of the riverbank pit 7 and is set corresponding to the monitoring box 8. The heating and evaporation unit is used to evaporate the moisture in the sediment sample in the monitoring box 8.

[0032] The small watershed river sediment monitoring device provided in the embodiment, by introducing the water body of the river channel in the target watershed into the monitoring box 8, and recording the weight of the water sample through the weighing device 9, after recording the weight, the water in the monitoring box 8 is backflowed through the liquid pumping unit, realizing the first sediment and water separation action, after most of the water is pumped back, the liquid pumping unit stops working, the heating evaporation unit starts to heat the monitoring box 8, and the residual water in the monitoring box 8 is evaporated, realizing the second sediment and water separation action, after the residual sediment in the monitoring box 8 is dried, the weight of the sediment is recorded again, according to the total weight of the water measured in advance, the weight of the sediment in the water can be obtained, and the content of the river sediment in the watershed is obtained, so as to analyze the water and soil conservation in the watershed, wherein the river bank foundation pit 7 is reinforced by a brick structure to ensure the stability of the foundation pit, and the power supply box 16 is arranged in the river bank foundation pit 7. The power supply box 16 is used for supplying power to the liquid pumping unit and the heating evaporation unit and the like.

[0033] Specific implementation method two: combined with Figures 1 to 11 The sampling pipe fixing unit 1 includes a fixed platform 101 and a pipe support 102. The fixed platform 101 is inserted into the bottom of the river channel of the monitoring watershed through the embedded cone at the bottom. The pipe support 102 is fixedly connected to the top of the fixed platform 101. The water inlet end of the water inlet elbow pipe 2 is inserted into the pipe support 102. The other components and connection modes are the same as those of the specific implementation method one.

[0034] The sampling pipe fixing unit 1 in the embodiment is a fixed structure. The pipe support 102 is fixed through the fixed platform 101, and the water inlet elbow pipe 2 is fixed through the pipe support 102, so as to ensure the accuracy of the working position of the water inlet elbow pipe 2 during water pumping.

[0035] Specific implementation method three: combined with Figures 1 to 11 The sampling pipe fixing unit 1 includes a fixed platform 101, a pipe support 102, a pre-embedded groove 103, and a lifting motor 104. The pre-embedded groove 103 is pre-embedded in the bottom of the river channel of the monitoring watershed. The fixed platform 101 is arranged on the top opening of the pre-embedded groove 103. The fixed platform 101 is inserted into the bottom of the river channel of the monitoring watershed through the embedded cone at the bottom. The lifting motor 104 is arranged in the pre-embedded groove 103 in the vertical direction. The lifting motor 104 is fixedly connected to the inner bottom of the pre-embedded groove 103 through the fixed mounting seat. The piston rod end of the lifting motor 104 extends above the fixed platform 101 through the fixed platform 101. The pipe support 102 is fixed to the piston rod end of the lifting motor 104. The working height of the pipe support 102 can be adjusted through the extension and retraction action of the piston rod in the lifting motor 104. The other components and connection modes are the same as those of the specific implementation method two.

[0036] In this embodiment, the pipe support 102 is driven by the lifting motor 104 to adjust the longitudinal height to adapt to the collection of water and soil at different water levels. The pre-buried groove 103 is a metal structure, which is provided with a battery as a power supply. The power supply lead of the battery can be introduced into the river bank foundation pit 7 through the pre-buried pipe in the river embankment foundation and connected with the power supply box 16. The fixed platform 101 is provided with a sealing rubber pad at the contact position with the pre-buried groove 103, which prevents the river water in the drainage basin from entering the pre-buried groove 103 and affecting the lifting motor 104 in the pre-buried groove 103. A sealing ring is also provided between the fixed platform 101 and the piston rod of the lifting motor 104 to prevent the river water in the drainage basin from entering the pre-buried groove 103.

[0037] Specific embodiment four: combination Figures 1 to 11 In this embodiment, the difference between this embodiment and the specific embodiment three is that the installation boss 10 and the river bank foundation pit 7 form a pipe running gap 18, and the top opening of the pipe running gap 18 is buckled with a running plate 19, the top of the running plate 19 is coplanar with the top of the installation boss 10, and the running plate 19 is processed with a hole system matched with the pre-buried water running pipe 41. The other components and connection modes are the same as those of the specific embodiment three.

[0038] In this embodiment, the pipe running gap 18 is used to provide a layout space for the pre-buried water running pipe 41, and a clamping strip is arranged on the side wall of the installation boss 10 and the inner wall of the river bank foundation pit 7, which is used to clamp the running plate 19. The running plate 19 is designed for the construction personnel to walk.

[0039] Specific embodiment five: combination Figures 1 to 11 In this embodiment, the difference between this embodiment and the specific embodiment four is that a guide limiting groove 71 is machined on the side wall corresponding to the two ends of the monitoring box 8 in the river bank foundation pit 7, and the two guide limiting grooves 71 are oppositely arranged. The monitoring box 8 is located on the weighing device 9, and the two ends of the monitoring box 8 are respectively embedded in one guide limiting groove 71. The other components and connection modes are the same as those of the specific embodiment four.

[0040] In this embodiment, the guide limiting groove 71 is used to guide and limit the monitoring box 8, so as to ensure the accuracy of the working position of the monitoring box 8 when the monitoring box 8 is pulled up and put down subsequently.

[0041] Specific embodiment six: combination Figures 1 to 11The difference between this embodiment and embodiment five is that the lower part of the monitoring box 8 is provided with a horizontally arranged box water inlet pipe 81, one end of the box water inlet pipe 81 extends into the monitoring box 8 and is arranged in communication with the monitoring box 8, the other end of the box water inlet pipe 81 is arranged in communication with the other end of the over corrugated pipe 6, a first liquid level sensor 82 is installed on the upper part of the inner wall of the monitoring box 8, and a humidity sensor 83 is installed on the inner bottom of the monitoring box 8. The other components and connection modes are the same as those of embodiment five.

[0042] In this embodiment, the box water inlet pipe 81 and the over corrugated pipe 6 are connected by a quick connector, a plurality of plug-in holes are processed on the outer wall of the end part of the box water inlet pipe 81 in the circumferential direction, and spring pins are arranged outside the plug-in holes, the end part of the over corrugated pipe 6 is processed with a plurality of socket holes, and each socket hole is coaxially arranged in correspondence with one plug-in hole, and the box water inlet pipe 81 and the over corrugated pipe 6 are locked and fixed by the spring pins. When it is necessary to transport the monitoring box 8, the spring pins between the box water inlet pipe 81 and the over corrugated pipe 6 are pulled out to separate the box water inlet pipe 81 from the over corrugated pipe 6. The first liquid level sensor 82 is used to determine the maximum height of the water sample, and the humidity sensor 83 is used to detect the humidity of the remaining silt in the box after the subsequent silt is dewatered.

[0043] Embodiment seven: Figures 1 to 11 The difference between this embodiment and embodiment six is that the liquid pumping unit includes a bottom turntable 11, a lifting hydraulic cylinder 12, a second water pump 13, a liquid pumping elbow unit 14, and a return hose 15. The bottom turntable 11 is arranged on the side of the mounting boss 10 away from the river channel, and is fixed to the inner bottom of the riverbank foundation pit 7 through a mounting seat. The lifting hydraulic cylinder 12 is arranged on and fixedly connected to the top of the bottom turntable 11. The second water pump 13 is fixedly installed on the end of the piston rod of the lifting hydraulic cylinder 12. The water outlet end of the liquid pumping elbow unit 14 is arranged in communication with the liquid inlet end of the second water pump 13. The water inlet end of the liquid pumping elbow unit 14 is arranged towards the open end of the monitoring box 8. The water inlet end of the return hose 15 is arranged in communication with the liquid outlet end of the second water pump 13. The water outlet end of the return hose 15 is arranged in communication with the return water pipe pre-buried in the riverbank foundation 4. The other components and connection modes are the same as those of embodiment six.

[0044] Embodiment eight: Figures 1 to 11This embodiment differs from specific embodiment seven in that the liquid extraction bend unit 14 includes a liquid extraction bend body 141, a filter sleeve 142, and a second liquid level sensor 143. The outlet end of the liquid extraction bend body 141 is connected to the inlet end of the second water pump 13. The inlet end of the liquid extraction bend unit 14 faces the opening end of the monitoring box 8. The filter sleeve 142 is fitted onto the inlet end of the liquid extraction bend unit 14. The second liquid level sensor 143 is vertically mounted on the top of the filter sleeve 142, and the detection end of the second liquid level sensor 143 passes through the filter sleeve 142 and faces the bottom of the monitoring box 8. Other components and connections are the same as in specific embodiment seven.

[0045] Specific Implementation Method Nine: Combining Figures 1 to 11 This embodiment differs from specific embodiment eight in that the filter sleeve 142 includes an installation sleeve 1421 and a sediment filter screen 1422. The upper part of the inner wall of the installation sleeve 1421 is machined with an internal thread, and the outer circular wall of the water inlet end of the liquid extraction bend body 141 is machined with an external thread that mates with the internal thread. The installation sleeve 1421 is fitted onto the water inlet end of the liquid extraction bend body 141 and threadedly connected to it. The sediment filter screen 1422 is installed on the lower part of the inner wall of the installation sleeve 1421. A sensor mounting block is provided on the outer circular wall of the installation sleeve 1421, integrally formed with the installation sleeve 1421. A mounting hole 1423 is machined on the top of the sensor mounting block. A second liquid level sensor 143 is vertically mounted on the top of the sensor mounting block, and the detection end of the second liquid level sensor 143 passes through the mounting hole 1423 and faces the bottom of the monitoring box 8. Other components and connection methods are the same as in specific implementation method eight.

[0046] The description will be based on specific embodiments seven to nine. The pumping unit is a device for achieving the first separation of sediment and water. The second pump 13 serves as the power element providing suction, and the pumping bend unit 14 is the actuator for the pumping action. The pumping bend unit 14 is equipped with a non-contact liquid level sensor. As the pumping bend unit 14 approaches the water surface in the monitoring tank 8, it draws water into the return water pipe in the riverbank foundation 4 under suction. When the water level drops, the second liquid level sensor 143 transmits the liquid level change information to the lifting hydraulic system. Cylinder 12, the lifting hydraulic cylinder 12 drives the No. 2 water pump 13 to descend to a certain height, so that the liquid extraction bend unit 14 is close to the liquid surface. This process is repeated until most of the water in the monitoring box 8 is extracted. Due to the obstruction of the mud and sand filter screen 1422, only a small amount of mud and sand will enter the liquid extraction bend unit 14, which will not cause a large amount of mud and sand loss or pipe blockage. The bottom turntable 11 is used to adjust the working angle of the liquid extraction bend unit 14. When it is necessary to transfer the monitoring box 8, the liquid extraction bend unit 14 can be rotated to the outside of the monitoring box 8 to avoid interference during transfer.

[0047] Specific implementation ten: combination Figures 1 to 11 In this embodiment, the heating evaporation unit comprises two electric heating assemblies 17, each of which is installed in a corresponding guide limiting groove 71, and each electric heating assembly 17 comprises a mounting frame body and a plurality of electric heating pipes fixed on the inner wall of the corresponding guide limiting groove 71 by the mounting frame body. The other components and connection modes are the same as those of the eighth embodiment.

[0048] In this embodiment, the electric heating assembly 17 is used to heat the monitoring box 8 to evaporate the residual water at the bottom of the monitoring box 8, so as to ensure the accuracy of the silt measurement.

[0049] The above has been disclosed in the preferred embodiment of the utility model, however, is not used to limit the utility model, any skilled person in the art, without departing from the technical scheme range of the utility model, can make some changes or modifications for equivalent implementation examples of equivalent changes by using the above disclosed structure and technical content, but any simple modification, equivalent change and modification of the above implementation examples according to the technical essence of the utility model, all still belong to the technical scheme range of the utility model.

[0050] Working principle:

[0051] The application is first assembled according to the connection relationship described in embodiment one to embodiment ten before use, the water sample in the target river basin is pumped to the monitoring box 8 by starting the first water pump 5, until the liquid level in the monitoring box 8 reaches the area of the first liquid level sensor 82, the first water pump 5 stops working, in order to ensure that the water flow in the river does not enter the monitoring box (8), a valve can be arranged on the embedded water pipe 41, when the first water pump 5 works, the valve is in the open state, when the first water pump 5 stops working, the valve is in the closed state, after the first water pump 5 stops working, the sample weight of the collected water is recorded by the weighing device 9, then the liquid pumping unit starts to work, the river water in the monitoring box 8 is pumped to the backflow pipe in the river bank foundation 4, the backflow pipe in the river bank foundation 4 can flow back to the river or be connected to the collection water tank for unified collection and treatment of water, after the water pumping work of the liquid pumping unit, most of the water in the monitoring box 8 has been pumped away, only residual silt and a small amount of water are left, at this time, the heating and evaporation unit starts to heat the monitoring box 8, evaporates the residual water in the monitoring box 8, realizes the second silt and water separation action, after the residual silt in the monitoring box 8 is dried, the weight of the silt is recorded again, according to the total weight of the water measured in advance and the weight of the silt in the water, the proportion of the river silt content in the river basin can be obtained, so as to analyze the water and soil conservation condition in the river basin, generally, the device is measured by the staff once a month, the measurement frequency can be increased in flood season or rainy season, so as to achieve the purpose of stable monitoring of the river basin.

Claims

1. A small watershed river channel sediment monitoring device, characterized in that: The monitoring device comprises a sampling pipe fixing unit (1), a water inlet elbow pipe (2), a water inlet corrugated pipe (3), a pre-buried water pipe (41), a first water pump (5), an excessive corrugated pipe (6), a river bank foundation pit (7), a monitoring box (8), a weigher (9), a mounting boss (10), a liquid pumping unit and a heating evaporation unit. The water inlet end of the water inlet elbow pipe (2) is fixed at the bottom of the river channel of the monitoring basin through the sampling pipe fixing unit (1), the water inlet end of the water inlet corrugated pipe (3) is connected with the water outlet end of the water inlet elbow pipe (2), the water outlet end of the water inlet corrugated pipe (3) is connected with the water inlet end of the pre-buried water pipe (41), the pre-buried water pipe (41) is pre-buried in the river bank foundation (4), the river bank foundation (4) is processed with the river bank foundation pit (7) on the side far away from the river channel, the water outlet end of the pre-buried water pipe (41) extends into the river bank foundation pit (7), the inner bottom of the river bank foundation pit (7) is provided with the mounting boss (10) on the side close to the river channel, the first water pump (5) is fixed on the top of the mounting boss (10), the water outlet end of the pre-buried water pipe (41) is in communication with the water inlet end of the first water pump (5), the inner bottom of the river bank foundation pit (7) is further provided with the weigher (9), the weigher (9) is located on the side of the mounting boss (10) far away from the river channel, the monitoring box (8) is located on the weigher (9), the excessive corrugated pipe (6) is arranged between the first water pump (5) and the monitoring box (8), one end of the excessive corrugated pipe (6) is in communication with the water outlet end of the first water pump (5), the other end of the excessive corrugated pipe (6) is in communication with the water inlet end of the monitoring box (8), the liquid pumping unit is arranged on the side of the monitoring box (8) far away from the mounting boss (10), the liquid pumping unit is provided with a rotatable and liftable water pumping end, the liquid pumping unit is used for pumping the river water sample of the monitoring box (8), the water outlet end of the liquid pumping unit is in communication with the backflow pipe pre-buried in the river bank foundation (4), the heating evaporation unit is installed on the inner wall of the river bank foundation pit (7), and the heating evaporation unit is arranged correspondingly with the monitoring box (8), and the heating evaporation unit is used for evaporating the moisture of the sediment sample in the monitoring box (8).

2. The small watershed river channel sediment monitoring device according to claim 1, characterized in that: The sampling pipe fixing unit (1) comprises a fixed platform (101) and a pipe support (102), the fixed platform (101) is inserted and mounted at the bottom of the river channel of the monitoring basin through the pre-buried cone at the bottom, and the pipe support (102) is fixedly connected to the top of the fixed platform (101), and the water inlet end of the water inlet elbow pipe (2) is inserted and mounted in the pipe support (102).

3. The small watershed river channel sediment monitoring device according to claim 1, characterized in that: The sampling pipe fixing unit (1) comprises a fixing platform (101), a pipe support (102), a pre-buried groove (103) and a lifting motor (104), the pre-buried groove (103) is pre-buried at the bottom of the river channel of the monitoring basin, the fixing platform (101) is cover-set at the top opening of the pre-buried groove (103), and the fixing platform (101) is inserted and fixed at the bottom of the river channel of the monitoring basin through the pre-buried cone at the bottom, the lifting motor (104) is arranged in the pre-buried groove (103) in the vertical direction, and the lifting motor (104) is fixedly connected with the inner bottom of the pre-buried groove (103) through a fixed mounting seat, the piston rod end of the lifting motor (104) penetrates through the fixing platform (101) and extends above the fixing platform (101), and the pipe support (102) is fixed at the piston rod end of the lifting motor (104), and the working height of the pipe support (102) can be adjusted through the telescopic action of the piston rod in the lifting motor (104).

4. The small watershed river channel sediment monitoring device according to claim 3, characterized in that: The installation boss (10) and the river bank foundation pit (7) form a pipe running gap (18), a walking plate (19) is buckled at the top opening of the pipe running gap (18), the top of the walking plate (19) is coplanar with the top of the installation boss (10), and a hole system matched with the pre-buried water pipe (41) is formed on the walking plate (19).

5. The small watershed river channel sediment monitoring device according to claim 4, characterized in that: A guide limiting groove (71) is formed on the side wall corresponding to the two ends of the monitoring box (8) in the river bank foundation pit (7), and the two guide limiting grooves (71) are oppositely arranged, the monitoring box (8) is located on the load cell (9), and the two ends of the monitoring box (8) are respectively embedded in one guide limiting groove (71).

6. The small watershed river channel sediment monitoring device according to claim 5, characterized in that: A horizontally arranged box water inlet pipe (81) is inserted into the lower part of the monitoring box (8), one end of the box water inlet pipe (81) extends into the monitoring box (8) and is communicatively arranged with the monitoring box (8), the other end of the box water inlet pipe (81) is communicatively arranged with the other end of the excessive corrugated pipe (6), a first liquid level sensor (82) is installed on the inner wall of the monitoring box (8), and a humidity sensor (83) is installed on the inner bottom of the monitoring box (8).

7. The small watershed river channel sediment monitoring device according to claim 6, characterized in that: The liquid pumping unit comprises a bottom turntable (11), a lifting hydraulic cylinder (12), a second water pump (13), a liquid pumping elbow pipe unit (14) and a return hose (15), the bottom turntable (11) is arranged on the side of the installation boss (10) away from the river channel, and the bottom turntable (11) is fixed on the inner bottom of the river bank foundation pit (7) through a mounting seat, the lifting hydraulic cylinder (12) is arranged on and fixedly connected with the top of the bottom turntable (11), the second water pump (13) is fixedly installed at the end of the piston rod in the lifting hydraulic cylinder (12), the water outlet end of the liquid pumping elbow pipe unit (14) is communicatively arranged with the liquid inlet end of the second water pump (13), the liquid inlet end of the liquid pumping elbow pipe unit (14) is arranged towards the opening end of the monitoring box (8), the liquid inlet end of the return hose (15) is communicatively arranged with the liquid outlet end of the second water pump (13), and the liquid outlet end of the return hose (15) is communicatively arranged with the return water pipe pre-buried in the river bank foundation (4).

8. The small watershed river channel sediment monitoring device according to claim 7, characterized in that: The liquid pumping elbow unit (14) comprises a liquid pumping elbow body (141), a filter sleeve (142) and a second liquid level sensor (143). The water outlet end of the liquid pumping elbow body (141) is in communication with the liquid inlet end of the second water pump (13). The filter sleeve (142) is sleeved on the water inlet end of the liquid pumping elbow unit (14). The second liquid level sensor (143) is vertically installed on the top end of the filter sleeve (142), and the detection end of the second liquid level sensor (143) penetrates through the filter sleeve (142) and is arranged towards the bottom of the monitoring box (8).

9. The small watershed river channel sediment monitoring device according to claim 8, characterized in that: The filter sleeve (142) comprises a mounting sleeve body (1421) and a silt filter screen (1422). The upper part of the inner hole wall of the mounting sleeve body (1421) is provided with a connecting internal thread. The outer circular wall of the water inlet end of the liquid pumping elbow body (141) is provided with a connecting external thread matched with the connecting internal thread. The mounting sleeve body (1421) is sleeved on the water inlet end of the liquid pumping elbow body (141) and is threadedly connected with the liquid pumping elbow body (141). The silt filter screen (1422) is installed on the lower part of the inner hole wall of the mounting sleeve body (1421). The outer circular wall of the mounting sleeve body (1421) is provided with a sensor mounting block which is integrally formed with the mounting sleeve body (1421). The top of the sensor mounting block is provided with a mounting jack (1423). The second liquid level sensor (143) is vertically installed on the top of the sensor mounting block, and the detection end of the second liquid level sensor (143) penetrates through the mounting jack (1423) and is arranged towards the bottom of the monitoring box (8).

10. The small watershed river channel sediment monitoring device according to claim 9, characterized in that: The heating and evaporation unit comprises two electric heating assemblies (17). Each electric heating assembly (17) is correspondingly installed in a guide limiting groove (71). The electric heating assembly (17) comprises a mounting frame body and a plurality of electric heating pipes. The plurality of electric heating pipes are fixed on the inner wall of the corresponding guide limiting groove (71) through the mounting frame body.

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