Method and device for detecting sand content of water conservancy project

Abstract

The invention relates to the technical field of water conservancy projects, in particular to a water conservancy project sand content detection method and device. The detection part comprises a connecting cylinder which penetrates through and is slidably arranged on the support, a telescopic dial indicator is slidably arranged at the upper end of the connecting cylinder, the telescopic end of the telescopic dial indicator is arranged in the connecting cylinder, a piston tightly attached to the telescopic end of the telescopic dial indicator is further slidably arranged in the connecting cylinder, and an air bag matched with the pipe diameter of a branch pipe of the three-way pipe is arranged at the tail end of the connecting cylinder. A cavity is formed between the air bag and the piston. According to the device, the discharging pipe is matched with the three-way pipe to form an efficient channel for slurry filtering and circulating, further, the depth of a sand pile formed by sand grains is accurately measured through the air bag and the telescopic dial indicator, the air bag is attached to the sand pile, and the piston and the telescopic end of the telescopic dial indicator are pushed to move upwards; the sand content in the mud is accurately measured, the whole operation process is simplified, and the detection efficiency is remarkably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of sediment content detection, and in particular to a method and device for detecting sediment content in a water conservancy project. Background Art

[0002] Sediment content testing in water conservancy projects is essential to ensure the safety and efficient operation of the project. Sediment content refers to the ratio of the weight of solid particles suspended in water to the volume of the water body. This test is very important for understanding water flow characteristics, predicting riverbed changes, monitoring water quality, and formulating maintenance measures.

[0003] At present, a three-piece mud measuring instrument is usually used, including a mud specific gravity meter, a mud viscometer and a mud sand content measuring instrument. The mud sand content measuring instrument filters the mud through a screen to separate the sand particles, and then measures the volume or mass ratio of these particles to determine the sand content. However, the existing mud sand content measuring instruments have the following disadvantages: 1. Complicated operation: The measurement process requires multiple steps to be completed manually, including mud pouring, sediment filtering, flushing, flipping the filter, splicing the funnel and measuring cup, flushing off sand and stones, etc. These steps are not only cumbersome, but also the filter, funnel and measuring cup need to be manually positioned during the operation, which poses the risk of falling and breaking.

[0004] 2. Inaccurate observation: When observing the sand in the measuring cup, the sand will float up and down due to the buoyancy in the water, resulting in inaccurate sand content. Specifically, when the sand is in the water, the lighter particles tend to move with the water flow and are not easy to stabilize in a certain position, which makes it difficult to obtain a stable reading in the static sedimentation method. In addition, when reading the scale of the measuring cup, if the sand is not evenly distributed or fails to settle completely, it will also lead to errors in the measurement results. This instability increases the uncertainty of the measurement, which in turn affects the accuracy of the final sand content data. Summary of the invention

[0005] In order to overcome the shortcomings of the above-mentioned prior art, the present invention provides a method and device for detecting the sediment content of a water conservancy project, comprising: The bracket is a hollow frame body divided into two parts, a left part and a right part, and a shell is arranged on the bracket; A feeding pipe is provided through the shell; A tee pipe is connected to the bottom of the feed pipe, a branch pipe of the tee pipe extends to the left side of the bracket, the upper end of the branch pipe is connected to the bracket, and a water pipe is connected to the bottom of the main pipe of the tee pipe, and a filter screen for filtering sand is provided at the connection between the two; An electric push rod is arranged on the right side wall of the bracket, and the telescopic end of the electric push rod passes through the right end of the main pipe of the three-way pipe and is connected with a push block for pushing sand; The baffle is slidably arranged between the inner side walls of the shell, a shell for sliding the lower part of the baffle is connected to the main pipe of the tee pipe, and a through hole matching the diameter of the main pipe is opened on the baffle; The slide table is slidably arranged at the bottom of the bracket, and the top surface of the slide table is in close contact with the bottom end of the branch pipe of the tee pipe; The detection part is slidably arranged in the branch pipe of the three-way pipe. The detection part includes a connecting tube that passes through and is slidably arranged in the bracket. A telescopic dial indicator is slidably arranged on the upper end of the connecting tube. The telescopic end of the telescopic dial indicator is placed in the connecting tube, and a piston is also slidably arranged in the connecting tube to be tightly attached to the telescopic end of the telescopic dial indicator. An air bag that is adapted to the diameter of the branch pipe of the three-way pipe is arranged at the end of the connecting tube, and there is a cavity between the air bag and the piston.

[0006] Preferably, a filter portion connected to the feed pipe is provided on the outer shell, and the filter portion includes a filter cartridge arranged on the top of the outer shell, and the filter cartridge is used to filter gravel and debris in the mud. Annular grooves are symmetrically provided on both sides of the bottom of the filter cartridge, and buckles are slidably provided on the annular grooves. The bottom ends of the two buckles are connected to the outer shell, and a through groove is connected to the ends of the two annular grooves in opposite directions, and the through groove matches the diameter of the buckle on the same side.

[0007] Preferably, a pushing mechanism is provided in the shell, and the pushing mechanism includes a sliding rod arranged on the right inner wall of the shell, a slider is slidably provided on the sliding rod, an elastic member II in a compressed state is provided between the slider and the inner wall of the shell, and connecting rods are symmetrically provided on both sides of the slider, the upper ends of the two connecting rods extend to the two sides of the shell respectively and slide through the side walls, and the lower ends of the connecting rods are connected to the pushing blocks below, and a connecting shaft is provided through the two sides of the shell, and connecting plates located on both sides of the shell are symmetrically provided at both ends of the connecting shaft, and the top ends of the connecting plates are higher than the highest point of the baffle in the initial state, so that the connecting plates present an inclined state with the left lower and the right higher, and the upper ends of the two connecting rods also pass through the connecting plates on their respective sides and form a sliding fit, while the other end of the connecting plate is slidably and rotatably connected to the same side of the baffle.

[0008] Preferably, the pushing mechanism also includes mounting plates symmetrically arranged on the front and rear sides of the bracket, a pushing ring is slidably arranged between the two mounting plates, a notch is opened in the upper part of the pushing ring and its upper side is divided into two parts, and the two ends of the upper part of the pushing ring respectively pass through the connecting plates on the same side to form a sliding fit, and an inclined sliding groove is opened on the sliding platform for the lower side of the pushing ring to pass through and slide together, and the inclined sliding groove is consistent with the inclination state of the connecting plate.

[0009] Preferably, it also includes a water pump arranged on the right side of the shell, the lower water inlet of the water pump is connected to the water inlet pipe of the external water source, and the upper water outlet of the water pump is connected to the water outlet pipe that passes through the shell and is connected to the down pipe, so that clean water can be poured into the down pipe to flush the mud.

[0010] Preferably, it also includes a mounting seat arranged on the left side of the shell, a support rod is hingedly arranged on the mounting seat, an elastic member I is arranged between the support rod and the shell, and the top end of the support rod is against the telescopic dial indicator.

[0011] Preferably, it also includes a hopper arranged on the bracket, and the hopper is located below the three-way pipe.

[0012] Preferably, the lower side of the top end of the support rod is an inclined surface that slopes downward from left to right, suitable for fitting the movement of the telescopic dial indicator to synchronously support it.

[0013] Preferably, one end of the push block facing the branch pipe of the tee pipe is in an arc surface, so that when the push block fits against the connection between the branch pipe and the main pipe, it can adapt to the shape of the airbag to provide a sliding channel for it.

[0014] The method for using the water conservancy project sediment content detection device includes the following steps: S1. Pour the mud into the filter cartridge so that the gravel and impurities in the mud are filtered out. Because the baffle is against the main pipe of the tee pipe at this time, the mud can only flow through the water pipe below. The mud first passes through the down pipe and then enters the main pipe of the tee pipe. In this process, the silt is filtered out through the filter screen and placed on the filter screen. Finally, the excess water will flow out from the water pipe below and be discharged from the hopper. S2. After the sediment is filtered, start the water pump to introduce clean water into the device for flushing. The water flows through the water inlet pipe, flows into the water outlet pipe after being pressurized by the water pump, and then enters the feed pipe to thoroughly flush the sediment on the filter until the water flow is clear and the sand to be tested is left; S3. Then start the electric push rod, and its telescopic end drives the push block to move leftward in the tee pipe, pushes the sand on the filter screen, and pushes the connecting rod and the slider to move left synchronously, so that the elastic part II is gradually reset, and acts on the baffle plate to move it up until the through hole is aligned with the tee pipe, allowing the sand to enter the branch pipe of the tee pipe. The sand falls onto the slide below as it is pushed, preparing for the next step of detection; S4. Push the support rod to disengage it from the telescopic dial indicator, allowing the detection part to fall freely until the telescopic dial indicator moves to the bottom. During the falling process, the airbag moves down along the inner wall of the tee branch pipe. When the airbag contacts the sand pile, the surface of the airbag is squeezed by the sand pile and deformed until it fits completely. The gas in the airbag flows upward and pushes the piston to rise. At the same time, since the sand pile has a certain height, the connecting tube cannot move further downward. The connecting tube moves upward relative to the telescopic dial indicator. The sum of the distance the connecting tube moves upward relative to the telescopic dial indicator and the height of the piston rise is proportional to the telescopic end stroke of the telescopic dial indicator. The telescopic end stroke of the telescopic dial indicator is proportional to the reading. The final reading is recorded to accurately determine the sand content.

[0015] The present invention overcomes the shortcomings of the prior art and can achieve the following beneficial effects: 1. The present invention cooperates with the feed pipe and the three-way pipe to form an efficient channel for mud filtering and circulation, so that the mud can first be preliminarily filtered through the filter screen, and then the electric push rod is used to push the sieved sand into the branch pipe of the three-way pipe. Further, the air bag and the telescopic dial indicator are used to accurately measure the depth of the sand pile formed by the sand. The air bag fits the sand pile and pushes the piston and the telescopic end of the telescopic dial indicator to move upward, so that the high accuracy of the test results can be ensured. Based on the above, this not only realizes the accurate determination of the sand content in the mud, but also simplifies the entire operation process and significantly improves the detection efficiency.

[0016] 2. The present invention effectively removes gravel and other impurities in the mud through the setting of the filter part, ensuring that the sand-containing components in the mud are purer, thereby improving the accuracy of the test results. In addition, through the setting of the buckle, the filter cartridge can be quickly disassembled and assembled, which not only improves the convenience of device maintenance, but also facilitates daily cleaning work.

[0017] 3. The present invention realizes the automation of the movement of the baffle and the slide through the design of the pushing mechanism, utilizes the thrust provided by the push block to drive the connecting rod to move, and further links other components to work together, so that the baffle and the slide can achieve the desired movement effect, thereby achieving the effect of integrated operation, process-based and continuous operation.

[0018] 4. The present invention configures a water pump to flush the preliminarily filtered mud and remove mud residues attached to the sand particles, ensuring that the sand particles finally separated are purer, thereby improving the accuracy of sand content detection.

[0019] 5. The present invention provides support for the telescopic dial indicator when it is not in operation through the design of the support rod, stabilizes its position, prevents damage caused by accidental collision or contact, and effectively protects the safety of the telescopic dial indicator. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0021] Figure 2 It is a three-dimensional structural cross-sectional view of components such as the housing, the feed pipe and the tee pipe of the present invention.

[0022] Figure 3 It is a three-dimensional structural cross-sectional view of components such as the electric push rod, push block and baffle of the present invention.

[0023] Figure 4 It is a three-dimensional structural cross-sectional view of the components of the detection part of the present invention.

[0024] Figure 5 It is a schematic diagram of the three-dimensional structure of the housing and the filter cartridge of the present invention.

[0025] Figure 6 It is a three-dimensional structural cross-sectional view of the components of the filter unit of the present invention.

[0026] Figure 7 It is a three-dimensional structural cross-sectional view of some components of the pushing mechanism of the present invention.

[0027] Figure 8 It is a three-dimensional structural schematic diagram of the connecting plate, the mounting plate, the pushing ring and other components of the present invention.

[0028] Fig. 9 It is a three-dimensional structural schematic diagram of components such as a water pump, a water inlet pipe and a water outlet pipe of the present invention.

[0029] Fig.10 It is a three-dimensional structural schematic diagram of components such as the mounting seat, the support rod and the elastic member I of the present invention.

[0030] The marks in the accompanying drawings provided by the present invention are: 1-bracket, 11-hopper, 2-housing, 21-water pump, 22-water inlet pipe, 23-water outlet pipe, 24-mounting seat, 25-support rod, 26-elastic part I, 3-feeding pipe, 4-tee pipe, 41-filter screen, 42-electric push rod, 43-push block, 44-baffle, 441-through hole, 45-slide, 5-detection part, 51-connecting cylinder, 52-telescopic dial indicator, 53-piston, 54-airbag, 6-filter part, 61-filter cartridge, 62-annular groove, 63-through groove, 64-buckle, 7-pushing mechanism, 71-slide rod, 72-elastic part II, 73-sliding block, 74-connecting rod, 75-connecting plate, 76-mounting plate, 77-pushing ring, 771-inclined slide groove. DETAILED DESCRIPTION

[0031] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0032] In addition, the terms "first", "second" and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. It should be noted that the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0033] Embodiment: A device for detecting the sediment content in a water conservancy project, such as Figure 1-Figure 4 As shown, including: The bracket 1 is the main supporting structure of the device. The bracket 1 is a hollow frame composed of left and right parts, which can be used to carry and fix various components. A shell 2 is arranged on the top left of the bracket 1. The shell 2 is hollow and is mainly used to guide and carry some components. The feed pipe 3 is provided through the housing 2 and is a channel for the initial mud to enter, guiding the mud to flow from top to bottom; The tee pipe 4 is connected to the bottom end of the feed pipe 3. The branch pipe of the tee pipe 4 extends to the left side of the bracket 1. The branch pipe is arranged longitudinally and its upper end is connected to the bracket 1. The main pipe part extends horizontally, so that the tee pipe 4 is in a left-inverted T shape. The bottom of the main pipe of the tee pipe 4 is connected to a water pipe. A filter screen 41 for filtering sand is arranged at the connection between the two, so that the flowing mud can be filtered through the filter screen 41, so as to obtain the sand required for detection, and then the mud and other water are discharged through the water pipe below; The electric push rod 42 is arranged on the right side wall of the bracket 1. The telescopic end of the electric push rod 42 is concentrically arranged with the main pipe part of the tee pipe 4. The telescopic end of the electric push rod 42 passes through the right end of the main pipe of the tee pipe 4 and is connected with a push block 43 for pushing sand. The push block 43 is adapted to the main pipe diameter of the tee pipe 4, so that the push block 43 can freely slide in the left and right directions. The push block 43 is curved toward one end of the branch pipe of the tee pipe 4, so that when the push block 43 fits the connection between the branch pipe and the main pipe, it can be connected to the interface of the branch pipe and adapt to the shape of the airbag 54 to provide a sliding channel for it, and the sand attached to the curved surface of the push block 43 is pushed down by the downward movement of the airbag 54 to avoid residual and inaccurate detection; The baffle 44 is slidably disposed between the front and rear inner side walls of the housing 2. A housing for the baffle 44 to slide is connected to the main pipe of the tee pipe 4. The size of the housing is adapted to the baffle 44, and can provide a passage and space for it to move, so as to cooperate with the tee pipe 4 to achieve the effect of controlling the flow direction of sand particles. A through hole 441 adapted to the diameter of the main pipe is opened on the baffle 44, so that the baffle 44 can use the through hole 441 when moving upward on the housing 2, thereby connecting with the main pipe part of the tee pipe 4, providing a channel for the discharge of sand particles; The slide 45 is slidably disposed at the bottom of the bracket 1, and the top surface of the slide 45 is in close contact with the bottom end of the branch pipe of the tee pipe 4, thereby sealing the bottom end of the branch pipe of the tee pipe 4 to form a space that can carry sand particles to detect the sand content; The detection part 5 is slidably arranged in the branch pipe of the three-way pipe 4 and is used for detecting the sand content. The detection part 5 includes a connecting tube 51 that penetrates and is slidably arranged on the bracket 1. The connecting tube 51 is slidable up and down. A telescopic dial indicator 52 is slidably arranged on the upper end of the connecting tube 51. The telescopic end of the telescopic dial indicator 52 is placed in the connecting tube 51. The telescopic dial indicator 52 is a main detection tool. The depth of the sand pile is read by moving its telescopic end. A piston 53 that is tightly attached to the telescopic end of the telescopic dial indicator 52 is also slidably arranged in the connecting tube 51. An airbag 54 that is adapted to the diameter of the branch pipe of the three-way pipe 4 is arranged at the end of the connecting tube 51. There is a cavity between the airbag 54 and the piston 53. The airbag 54 is made of elastic and deformable hard rubber. While ensuring its stability during movement, it can also have a deformation effect. The deformation characteristics of the airbag 54 can be used to detect the sand pile, and the piston 53 pushes the telescopic end of the telescopic dial indicator 52, thereby achieving more accurate sand content detection.

[0034] like Figure 1 , Figure 5 and Figure 6 As shown, the outer shell 2 is provided with a filter part 6 connected with the discharge pipe 3, and the filter part 6 includes a filter cartridge 61 arranged on the top of the outer shell 2, and the filter cartridge 61 is used to filter gravel and debris in the mud. Annular grooves 62 are symmetrically opened on both sides of the bottom of the filter cartridge 61, and buckles 64 are slidably arranged on the annular grooves 62. The bottom ends of the two buckles 64 are connected to the outer shell 2, and the ends of the two annular grooves 62 in opposite directions are connected with a through groove 63, and the through groove 63 is consistent with the diameter of the buckle 64 on the same side, so that rotating the filter cartridge 61 can push the buckle 64 to slide on the annular groove 62, and when the buckle 64 moves to the corresponding through groove 63, it will be detached from it because of the size matching, so that the filter cartridge 61 can be disassembled for subsequent cleaning work.

[0035] like Figure 1 , Figure 7 and Figure 8As shown in the figure, a pushing mechanism 7 is arranged in the housing 2, and the pushing mechanism 7 includes a sliding rod 71 arranged on the right inner wall of the housing 2, a sliding block 73 is slidably arranged on the sliding rod 71, and an elastic member II 72 in a compressed state is arranged between the sliding block 73 and the inner wall of the housing 2. In this embodiment, the elastic member II 72 is a spring, which can provide thrust for the movement of the sliding block 73, and connecting rods 74 are symmetrically arranged on the front and rear sides of the sliding block 73. The upper ends of the two connecting rods 74 extend to the front and rear sides of the housing 2 respectively and slide through the same side wall, and the lower end of the connecting rod 74 is connected to the push block 43 below. A connecting shaft is arranged between the front and rear sides of the housing 2, and the front and rear ends of the connecting shaft are symmetrically provided with connecting plates 75 located on both sides of the housing 2, and the top of the connecting plate 75 is higher than the baffle 44 in the initial state. The highest point makes the connecting plate 75 present an inclined state with the left side lower and the right side higher. The upper ends of the two connecting rods 74 also pass through the connecting plates 75 on their respective sides and form a sliding fit, while the other end of the connecting plate 75 is slidably and rotatably connected to the same side of the baffle 44, so as to utilize the height difference formed by the connecting plate 75 to promote the movement of the baffle 44, and cooperate with the pushing force of the push block 43 to move the slider 73, so that the connecting rod 74 and the connecting plate 75 form a synchronous rotation and sliding operation, and the connecting plate 75 utilizes its inclined trend of being lower on the left and higher on the right, and adopts the inclined surface principle to drive the baffle 44 to move upward, thereby pushing the through hole 441 to align with the main pipe of the three-way pipe 4, achieving the effect of integrated automatic operation, thereby improving the fluency and continuity of the device and reducing the burden on the operator.

[0036] like Figure 1 and Figure 8 The cam 77 is pressed against the top of the support 74 to release the force of the spring 76, and the cam 77 is pressed against the support 74 to release the force of the spring 76.

[0037] like Fig. 9As shown, it also includes a water pump 21 arranged on the right side of the shell 2. The lower water inlet of the water pump 21 is connected to a water inlet pipe 22 of an external water source, and the upper water outlet of the water pump 21 is connected to a water outlet pipe 23 that passes through the shell 2 and is connected to the down pipe 3, so that clean water can be poured into the down pipe 3 to flush the mud, so that the mud attached to the sand can be further flushed, thereby ensuring the purity of the sand and improving the accuracy of the sand content detected.

[0038] like Fig.10 As shown, it also includes a mounting base 24 arranged on the left side of the shell 2, and a support rod 25 is hingedly arranged on the mounting base 24, and an elastic member I26 is arranged between the support rod 25 and the shell 2. In this embodiment, the elastic member I26 is a spring, which can provide a restoring force for the movement of the support rod 25, and the top end of the support rod 25 is abutted against the telescopic dial indicator 52, and the lower side of the top end of the support rod 25 is an inclined surface inclined downward from left to right, which is suitable for fitting the movement of the telescopic dial indicator 52 to synchronously support it, so that when the telescopic dial indicator 52 is reset and moved upward, the inclined surface can be used to cooperate to restore the original abutment state.

[0039] like Figure 1-Figure 3 As shown, it also includes a hopper 11 arranged on the bracket 1. The hopper 11 is located below the three-way pipe 4 and can drain the mud after filtering.

[0040] Based on the above-mentioned water conservancy project sediment content detection device, a water conservancy project sediment content detection method includes the following steps: S1. Pour the mud into the filter cartridge 61, so that the gravel and impurities in the mud are filtered out. Because the baffle 44 is against the main pipe of the tee pipe 4 at this time, the mud can only flow from the water pipe below. The mud first passes through the feed pipe 3 and then enters the main pipe of the tee pipe 4. In this process, the silt is filtered out by the filter screen 41, and the silt is placed on the filter screen 41. Finally, the excess water will flow out from the water pipe below and be discharged from the hopper 11; S2. After the sediment is filtered, start the water pump 21 to introduce clean water into the device for flushing. The water flows through the water inlet pipe 22, and after being pressurized by the water pump 21, it flows into the water outlet pipe 23, and then enters the feed pipe 3 to thoroughly flush the sediment on the filter screen 41 until the water flow is clear and the sand to be tested is left; S3, then start the electric push rod 42, and its telescopic end drives the push block 43 to move leftward in the three-way pipe 4, pushes the sand on the filter screen 41, and pushes the connecting rod 74 and the slider 73 to move left synchronously, so that the elastic member II 72 is gradually reset, and acts on the baffle 44 to move it upward and align the through hole 441 with the three-way pipe 4, allowing the sand to enter the branch pipe of the three-way pipe 4, and the sand falls onto the slide 45 below as it is pushed, preparing for the next step of detection; S4. Push the support rod 25 to disengage it from the telescopic dial indicator 52, so that the detection part 5 can fall freely until the telescopic dial indicator 52 moves to the bottom. During the falling process, the airbag 54 moves down along the inner wall of the tee pipe 4 branches. When the airbag 54 contacts the sand pile, the surface of the airbag 54 is squeezed by the sand pile and deformed until it is completely fitted. The gas in the airbag 54 flows upward and pushes the piston 53 to rise. At the same time, since the sand pile has a certain height, the connecting tube 51 cannot move further downward. The connecting tube 51 moves up relative to the telescopic dial indicator 52. The sum of the distance that the connecting tube 51 moves up relative to the telescopic dial indicator 52 and the height of the piston 53 is proportional to the telescopic end stroke of the telescopic dial indicator 52. The telescopic end stroke of the telescopic dial indicator 52 is proportional to the reading. The final reading is recorded to accurately obtain the sand content.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the present invention.

Claims

1. A device for detecting sediment content in a water conservancy project, characterized in that: include: The support (1) is a hollow frame body having two parts, a left part and a right part, and a housing (2) is arranged on the support (1); A feed pipe (3) is disposed through the housing (2); A tee pipe (4) is connected to the bottom end of the feed pipe (3), a branch pipe of the tee pipe (4) extends to the left side of the bracket (1), the upper end of the branch pipe is connected to the bracket (1), and the bottom of the main pipe of the tee pipe (4) is connected to a water pipe, and a filter screen (41) for filtering sand is provided at the connection between the two; An electric push rod (42) is arranged on the right side wall of the bracket (1), and the telescopic end of the electric push rod (42) passes through the right end of the main pipe of the three-way pipe (4) and is connected to a push block (43) for pushing sand; A baffle (44) is slidably disposed between the inner side walls of the outer shell (2); a housing for sliding the lower part of the baffle (44) is connected to the main pipe of the tee pipe (4); and a through hole (441) matching the diameter of the main pipe is opened on the baffle (44); A slide (45) is slidably arranged at the bottom of the bracket (1), and the top surface of the slide (45) is in close contact with the bottom end of the branch pipe of the three-way pipe (4); The detection part (5) is slidably arranged in the branch pipe of the three-way pipe (4), and the detection part (5) comprises a connecting tube (51) penetrating and slidably arranged on the bracket (1), a telescopic dial indicator (52) is slidably arranged on the upper end of the connecting tube (51), the telescopic end of the telescopic dial indicator (52) is placed in the connecting tube (51), and a piston (53) is also slidably arranged in the connecting tube (51) and is tightly attached to the telescopic end of the telescopic dial indicator (52), and an air bag (54) adapted to the diameter of the branch pipe of the three-way pipe (4) is arranged at the end of the connecting tube (51), and a cavity is provided between the air bag (54) and the piston (53).

2. A device for detecting sediment content in a water conservancy project according to claim 1, characterized in that: The outer shell (2) is provided with a filter portion (6) connected to the feed pipe (3), the filter portion (6) comprising a filter cartridge (61) arranged on the top of the outer shell (2), the filter cartridge (61) being used to filter gravel and debris in the mud, annular grooves (62) are symmetrically provided on both sides of the bottom of the filter cartridge (61), a buckle (64) is slidably provided on the annular groove (62), the bottom ends of the two buckles (64) are connected to the outer shell (2), and the ends of the two annular grooves (62) in opposite directions are connected with a through groove (63), and the through groove (63) matches the diameter of the buckle (64) on the same side.

3. A device for detecting sediment content in a water conservancy project according to claim 2, characterized in that: A pushing mechanism (7) is arranged inside the housing (2), and the pushing mechanism (7) comprises a sliding rod (71) arranged on the right inner wall of the housing (2), a sliding block (73) is slidably arranged on the sliding rod (71), an elastic member II (72) in a compressed state is arranged between the sliding block (73) and the inner wall of the housing (2), and connecting rods (74) are symmetrically arranged on both sides of the sliding block (73), the upper ends of the two connecting rods (74) respectively extend to both sides of the housing (2) and penetrate and slide on the side wall, and the lower ends of the connecting rods (74) are connected to the push block ( 43), a connecting shaft is provided between the two sides of the housing (2), and connecting plates (75) are symmetrically provided at both ends of the connecting shaft and are located on both sides of the housing (2), and the top of the connecting plate (75) is higher than the highest point of the baffle (44) in the initial state, so that the connecting plate (75) presents an inclined state with the left side lower and the right side higher. The upper ends of the two connecting rods (74) also pass through the connecting plates (75) on their respective sides and form a sliding fit, and the other end of the connecting plate (75) is slidably and rotatably connected to the same side of the baffle (44).

4. A device for detecting sediment content in a water conservancy project according to claim 3, characterized in that: The pushing mechanism (7) further comprises mounting plates (76) symmetrically arranged on the front and rear sides of the bracket (1); a pushing ring (77) is slidably arranged between the two mounting plates (76); a notch is opened in the upper part of the pushing ring (77) and its upper side is divided into two parts; and the two ends of the upper part of the pushing ring (77) respectively pass through the connecting plate (75) on the same side and form a sliding fit; an inclined groove (771) is opened on the slide table (45) for the lower side of the pushing ring (77) to pass through and slide together; the inclined groove (771) is consistent with the inclination state of the connecting plate (75).

5. A device for detecting sediment content in a water conservancy project according to claim 4, characterized in that: It also includes a water pump (21) arranged on the right side of the housing (2), the lower water inlet of the water pump (21) is connected to a water inlet pipe (22) of an external water source, and the upper water outlet of the water pump (21) is connected to a water outlet pipe (23) that passes through the housing (2) and is connected to the feed pipe (3), so that clean water can be poured into the feed pipe (3) to flush the mud.

6. A device for detecting sediment content in a water conservancy project according to claim 5, characterized in that: It also includes a mounting seat (24) arranged on the left side of the housing (2), a support rod (25) being hingedly arranged on the mounting seat (24), an elastic member I (26) being arranged between the support rod (25) and the housing (2), and a top end of the support rod (25) abuts against the telescopic dial indicator (52).

7. A device for detecting sediment content in a water conservancy project according to claim 6, characterized in that: It also includes a hopper (11) arranged on the bracket (1), and the hopper (11) is located below the three-way pipe (4).

8. A device for detecting sediment content in a water conservancy project according to claim 7, characterized in that: The lower side of the top end of the support rod (25) is an inclined surface that slopes downward from left to right, suitable for conforming to the movement of the telescopic dial indicator (52) to synchronously support it.

9. A device for detecting sediment content in a water conservancy project according to claim 8, characterized in that: One end of the push block (43) facing the branch pipe of the three-way pipe (4) is in an arcuate surface, so that when the push block (43) fits the connection between the branch pipe and the main pipe, it can adapt to the shape of the air bag (54) to provide a sliding channel for it.

10. The method for using the device for detecting sediment content in a water conservancy project according to claim 9, characterized in that: Included are: S1. Pour the mud into the filter cartridge (61) so that the gravel and impurities in the mud are filtered out. Because the baffle (44) is against the main pipe of the tee pipe (4), the mud can only flow through the water pipe below. The mud first passes through the feed pipe (3) and then enters the main pipe of the tee pipe (4). During this process, the mud and sand are filtered out through the filter screen (41) and placed on the filter screen (41). Finally, the excess water will flow out from the water pipe below and be discharged from the hopper (11). S2. After the sediment is filtered, the water pump (21) is started to introduce clean water into the device for flushing. The water flows through the water inlet pipe (22), is pressurized by the water pump (21), flows into the water outlet pipe (23), and then enters the feed pipe (3), and the sediment on the filter screen (41) is thoroughly flushed until the water flow is clear and the sand to be tested is left; S3, then the electric push rod (42) is started, and its telescopic end drives the push block (43) to move leftward in the three-way pipe (4), pushing the sand on the filter screen (41), and pushing the connecting rod (74) and the slider (73) to move leftward synchronously, so that the elastic member II (72) is gradually reset, and acts together on the baffle (44), so that it moves upward until the through hole (441) is aligned with the three-way pipe (4), allowing the sand to enter the branch pipe of the three-way pipe (4), and the sand falls onto the slide table (45) below as it is pushed, preparing for the next step of detection; S4, pushing the support rod (25) to make it disengage from the telescopic dial indicator (52), so that the detection part (5) can fall freely until the telescopic dial indicator (52) moves to the bottom. During the falling process, the airbag (54) moves downward along the inner wall of the branch pipe of the three-way pipe (4). When the airbag (54) contacts the sand pile, the surface of the airbag (54) is squeezed by the sand pile and deformed until it is completely fitted. The gas in the airbag (54) flows upward and pushes the piston (53) to rise. At the same time, since the sand pile has a certain height, the connecting tube (51) cannot move further downward. The connecting tube (51) moves upward relative to the telescopic dial indicator (52). The sum of the distance that the connecting tube (51) moves upward relative to the telescopic dial indicator (52) and the height of the piston (53) is proportional to the telescopic end stroke of the telescopic dial indicator (52). The telescopic end stroke of the telescopic dial indicator (52) is proportional to the reading. The final reading is recorded, thereby accurately obtaining the sand content.

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