Sediment quantitative conveying device

Abstract

The invention relates to the field of material conveying, in particular to a sediment quantitative conveying device which comprises a sediment sucking mechanism and a conveying mechanism, the sediment sucking mechanism comprises an air pump, a stirring bin and the like, the conveying mechanism comprises a sediment receiving frame, a support and the like, and the sediment quantitative conveying device can further comprise a sediment average density measuring mechanism which is composed of an average density measuring bin, an acoustic range finder and the like. The air pump sucks air to enable the suction pipe to suck sediment, the stirring impeller stirs, the sediment adding valve controls blanking, the conveying motor drives the conveying belt to convey, and the sediment average density measuring mechanism can measure the sediment average density. According to the device, the technical effects that the silt is quantitatively conveyed, the average density of the silt can be measured, and the conveying accuracy and scientificity are improved are achieved.

Description

Technical Field

[0001] The present invention relates to the field of material transportation, in particular to a sediment quantitative transportation device. Background Art

[0002] Flume tests related to sediment transport often require adding sand at a constant rate at the flume inlet, and knowing the actual amount of sand added is crucial. The current practice is to add sand at regular intervals to maintain a constant average rate. Traditional sand addition requires long periods of time, with concentrated sand addition at regular intervals, which is physically demanding. This approach is prone to operational errors when personnel are fatigued. Furthermore, this practice of adding a certain mass of test sand at regular intervals does not inherently result in a constant addition rate. Instead, it involves concentrated sand addition at regular intervals, with the average addition rate during these intervals equal to the designed addition rate. This intermittent sand addition process disrupts the continuity of the test, which in turn affects the accuracy of the test results. Summary of the Invention

[0003] In view of the defects existing in the prior art, the purpose of the present invention is to provide a sediment quantitative conveying device to achieve continuous and uniform addition of sediment.

[0004] In order to achieve the above purpose, the technical solution adopted by the present invention is:

[0005] A device for quantitatively conveying sediment comprises a sediment suction mechanism and a conveying mechanism, wherein:

[0006] The sand suction mechanism includes an air pump, a stirring chamber, a stirring motor, a stirring impeller, a sand adding valve and a suction pipe;

[0007] The mixing bin is fixed, with ventilation holes and sand suction holes at the top and a material discharge hole at the bottom.

[0008] The air pump is fixedly arranged, and the air inlet of the air pump is sealedly connected to the vent;

[0009] One end of the suction pipe is sealedly connected to the sand suction port;

[0010] The stirring motor is fixedly arranged on the stirring chamber;

[0011] The stirring impeller is arranged inside the stirring chamber and is coaxially connected to the rotating shaft of the stirring motor;

[0012] The sand-feeding valve is slidably installed at the bottom of the mixing bin. A sand-feeding hole is provided on the sand-feeding valve. The sand-feeding valve can be operatively moved to close the discharge port or to connect the sand-feeding hole with the discharge port.

[0013] The conveying mechanism includes a sand receiving frame, a bracket, a conveying motor and a conveyor belt;

[0014] The conveyor belt is installed on the bracket; the conveyor motor is connected to the conveyor belt;

[0015] The sand receiving frame is located below the material dropping port. It includes a top plate, two side plates and a funnel. The top plate is horizontally arranged above the conveyor belt. The two side plates are fixedly installed on both sides of the top plate, and the lower edges of the two side plates are in contact with the upper surface of the conveyor belt; the funnel is fixedly installed above the top plate and is connected to the space below the top plate.

[0016] Optionally, the sand suction mechanism further includes a filter screen, which is installed at the connection between the air inlet and the vent of the air pump.

[0017] Optionally, the conveying mechanism further includes a control circuit, the control circuit includes a power supply and a sliding rheostat, and the power supply is connected in series with the conveying motor via the sliding rheostat.

[0018] Optionally, a pulley is installed on the rotating shaft of the conveying motor, and the conveyor belt includes two rotating shafts and a flat belt wrapped around the two rotating shafts; the pulley is connected to one of the rotating shafts of the conveyor belt through a belt.

[0019] Optionally, the sediment quantitative conveying device further includes a sediment average density measuring mechanism, which includes an average density measuring chamber, an acoustic rangefinder, and a meter;

[0020] The upper wall of the average density measuring chamber is formed with a sand adding port, and the bottom of the average density measuring chamber is formed with a sand discharging port. The sand adding port is connected to the material discharge port, and the sand discharging port is located just above the sand receiving frame.

[0021] The average density measuring chamber is fixedly connected to the meter;

[0022] The meter is fixedly set up and is used to measure the mass of the average density measuring chamber and sediment;

[0023] There are multiple sonic rangefinders, all of which are installed on the inner top of the average density measurement chamber.

[0024] Optionally, the sediment average density measuring mechanism further includes a sediment discharge motor and a sediment discharge valve, wherein the sediment discharge motor is fixedly arranged on the outside of the bin wall of the average density measuring bin, and a driving wheel is installed on the driving shaft of the sediment discharge motor;

[0025] The sand discharge valve is slidably installed at the bottom of the average density measuring chamber. A sand discharge hole is opened on the sand discharge valve. The sand discharge valve is connected to the driving wheel. The sand discharge valve can slide under the drive of the driving wheel. The sand discharge valve can be operatively moved to close the sand outlet or moved to connect the sand discharge hole with the sand outlet.

[0026] Optionally, the meter is a hanging scale, and a hanging piece of the hanging scale is fixedly connected to the top of the average density measurement chamber, and the hanging piece is a hook or a hanging rope.

[0027] Optionally, the sediment average density measuring mechanism further includes a fixed support, which is disposed outside the average density measuring chamber, and the average density measuring chamber is spaced apart from the fixed support.

[0028] Optionally, a sand adding pipe is formed at the sand adding port of the average density measuring chamber, one end of the sand adding pipe is sealedly connected to the sand adding port, and the other end of the sand adding pipe is located directly below the material dropping port.

[0029] Optionally, the sediment average density measuring mechanism also includes a computer and a display. The computer is electrically connected to the meter and multiple acoustic rangefinders. The computer is used to calculate the sediment average density based on the data measured by the meter and multiple acoustic rangefinders. The display is electrically connected to the computer and is used to display the sediment average density.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] The quantitative sediment conveying device of the present application cooperates with the mixing bin through the air pump of the sand suction mechanism, and uses a suction tube to realize the sand suction function. The stirring motor drives the stirring impeller to stir the sediment in the mixing bin to avoid sediment accumulation and blockage, and at the same time make the sediment evenly distributed. The sand adding valve can control the opening and closing of the drop port to realize quantitative sand dropping; the sand receiving frame of the conveying mechanism receives the sediment falling from the drop port, and the side plates abut against the conveyor belt surface to prevent sediment overflow, and the cross-sectional size formed by the top plate, side plates and conveyor belt surface is always fixed. After the sediment is evenly stirred, the speed of the conveyor belt is controlled to be constant, so the amount of sediment passing through the cross-sectional area formed by the top plate, side plates and conveyor belt surface per unit time is always consistent. The conveyor belt is driven by the conveying motor to transport the sediment to the specified position, thereby realizing the quantitative conveying of sediment as a whole. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0033] Figure 1 It is a schematic diagram of the overall structure of the sediment quantitative conveying device of the present invention.

[0034] In the figure: 1. Average density measuring chamber; 2. Sonic rangefinder; 3. Meter; 4. Sand adding port; 5. Sand outlet; 6. Sand discharge motor; 7. Sand discharge valve; 8. Fixed support; 9. Air pump; 10. Mixing chamber; 11. Mixing motor; 12. Mixing impeller; 13. Sand adding valve; 14. Suction pipe; 15. Dropping port; 16. Filter; 17. Sand adding pipe; 18. Display; 19. Sand receiving frame; 20. Bracket; 21. Conveyor motor; 22. Conveyor belt; 23. Top plate; 24. Side plate; 25. Funnel. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solutions and advantages of this application more clearly understood, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0036] Example 1

[0037] Combine Figure 1 As shown, an embodiment of the present invention discloses a quantitative sediment conveying device, which includes a sand suction mechanism and a conveying mechanism. The sand suction mechanism sucks in the sediment, and the conveying mechanism receives and conveys the sediment falling from the sand suction mechanism, thereby achieving precise control of the sediment conveying amount.

[0038] Specifically, the sand suction mechanism of this embodiment includes an air pump 9, a mixing chamber 10, a mixing motor 11, an impeller 12, a sand-feeding valve 13, and a suction pipe 14. The mixing chamber 10 is fixed, with a vent and a sand-feeding port defined at its top. A discharge port 15 is defined at its bottom, connecting to the sand-feeding port 4. The air pump 9 is fixed, with its air inlet sealed to the vent. One end of the suction pipe 14 is sealed to the sand-feeding port. The mixing motor 11 is fixed to the mixing chamber 10. The impeller 12 is located within the mixing chamber 10 and coaxially connected to the rotating shaft of the mixing motor 11, which provides power to the impeller 12. The impeller 12 typically consists of blades and a hub. The blades can be spiral or straight. Spiral blades offer excellent mixing performance and ensure more uniform mixing of sediment. Straight blades are simple in structure and easy to manufacture. The stirring impeller 12 rotates under the drive of the stirring motor 11, stirring the sediment in the stirring bin 10 to make the sediment density uniform and facilitate subsequent transportation. The sand-adding valve 13 is slidably installed at the bottom of the stirring bin 10. The sand-adding valve 13 is provided with a sand-adding hole. The sand-adding valve 13 can be operatively moved to close the discharge port 15 or to connect the sand-adding hole to the discharge port 15. The movement of the sand-adding valve 15 can be manually operated or automatically controlled by a device such as an electric push rod. The sand suction mechanism uses the air pump 9, the suction pipe 14 and the stirring bin 10 to suck the sediment into the stirring bin 10. The stirring motor 11 drives the stirring impeller 12 to stir the sediment to make it uniform. The sand-adding valve 13 can control the opening and closing of the discharge port 15 to facilitate the adjustment of the sediment flow rate.

[0039] The conveyor mechanism includes a sand receiving frame 19, a bracket 20, a conveyor motor 21, and a conveyor belt 22. The conveyor belt 22 is mounted on the bracket 20, which supports it and is typically constructed from welded metal profiles. The bracket 20 can be adjusted in height and angle to suit different conveying requirements. The conveyor motor 21 is in driving connection with the conveyor belt 22. A pulley is mounted on the shaft of the conveyor motor 21. The conveyor belt 22 comprises two shafts and a flat belt wrapped around them. The pulley is in driving connection with one of the shafts of the conveyor belt 22 via a belt. The sand receiving frame 19 is located below the material discharge port. The sand receiving frame 19 includes a top plate 23, two side plates 24 and a funnel 25. The top plate 23 is horizontally arranged above the conveyor belt 22. The two side plates 24 are fixedly installed on both sides of the top plate 23. The lower edges of the two side plates 24 abut against the upper surface of the conveyor belt 22, which can prevent mud and sand from overflowing from both sides; the funnel 25 is fixedly installed above the top plate 23 and is connected to the space below the top plate 23. The shape of the funnel 25 is generally conical, which is convenient for guiding mud and sand to flow into the conveyor belt 22 below the sand receiving frame 19.

[0040] Furthermore, the sand suction mechanism of this embodiment further includes a filter screen 16, which is installed at the connection between the air inlet and the vent of the air pump 9. The filter screen 16 is installed at the connection between the air inlet and the vent of the air pump 9 to prevent mud and sand from entering the air pump 9, thereby avoiding damage to the air pump 9 and ensuring the normal operation of the sand suction mechanism.

[0041] Furthermore, the conveyor mechanism includes a control circuit comprising a power supply and a sliding rheostat. The power supply is connected in series with the conveyor motor 21 via the sliding rheostat. The sliding rheostat changes the resistance in the circuit, thereby adjusting the voltage and current of the conveyor motor 21 and, consequently, the speed of the conveyor belt 22. This allows for flexible adjustment of the sediment conveying speed based on actual needs, improving conveying flexibility and adaptability.

[0042] Furthermore, the sediment quantitative conveying device of this embodiment also includes a sediment average density measuring mechanism, which includes an average density measuring chamber 1 , an acoustic rangefinder 2 and a meter 3 .

[0043] The upper wall of the average density measurement chamber 1 is formed with a sand inlet 4, and the bottom of the chamber 1 is formed with a sand outlet 5. The sand outlet 5 and sand inlet 4 can be of various shapes, such as circular or square. Generally, a circular opening is more common. The sand inlet 4 facilitates the uniform entry of sediment into the chamber and serves to add sediment to be measured. The sand outlet 5 facilitates the uniform discharge of sediment. The sand inlet 4 is connected to the discharge port 15 and is located directly above the sand receiving frame 19.

[0044] The meter 3 is fixedly mounted, and the average density measurement chamber 1 is fixedly connected to the meter 3. The average density measurement chamber 1 and the meter 3 are secured together by welding, bolting, or other means to ensure a stable relative position between them during measurement, preventing factors such as shaking from affecting the mass measurement results. The meter 3 can be a weighing device such as an electronic scale or a pound scale. Selecting a meter 3 of appropriate precision ensures the accuracy of the mass measurement. In this embodiment, the meter 3 is used to measure the mass of the average density measurement chamber 1 and the sediment. In this embodiment, the meter 3 is a hanging scale, whose hanging member is fixedly connected to the top of the average density measurement chamber 1, and the hanging member is a hanging rope. The mass change measured by the meter 3 can be directly determined as the actual mass of the sediment entering the average density measurement chamber 1. Of course, in other embodiments, the hanging member can be a hook. Furthermore, in other embodiments, the meter 3 is a flat scale, and the average density measurement chamber 1 can be fixedly mounted on the flat scale.

[0045] Furthermore, the present embodiment includes multiple acoustic rangefinders 2, each of which is mounted on the inner top of the average density measurement chamber 1. Multiple acoustic rangefinders 2 are mounted on the inner top of the average density measurement chamber 1 by gluing, screwing, or other methods to ensure a secure installation and enable normal transmission and reception of acoustic signals. The acoustic rangefinders 2 can be of different types, such as ultrasonic rangefinders 2 or infrasonic rangefinders 2. Multiple acoustic rangefinders 2 can measure the distance from the surface of the sediment in the chamber to the chamber top from different positions to determine the volume of the sediment. Multiple acoustic rangefinders 2 face different directions, allowing their measurement range to fully cover the interior of the average density measurement chamber 1. When the interior space of the average density measurement chamber 1 remains unchanged, the distances between the multiple acoustic rangefinders 2 and the inner wall of the average density measurement chamber 1 remain constant. When sediment enters, the distances between the multiple acoustic rangefinders 2 change, enabling the measurement of the sediment height. Based on the dimensions of the inner wall of the average density measurement chamber 1, the sediment volume can be estimated. The meter 3 accurately measures the mass, and the sonic rangefinder 2 accurately measures the volume, and the average density of the sediment can be accurately calculated based on the formula that density equals mass divided by volume.

[0046] Furthermore, the sediment average density measurement mechanism of this embodiment includes a sediment discharge motor 6 and a sediment discharge valve 7. Sediment discharge motor 6 is fixedly mounted on the exterior of the average density measurement chamber 1 and can be secured with a bracket or welded directly to the chamber wall. A drive wheel is mounted on the drive shaft of sediment discharge motor 6. The drive wheel can be a gear, pulley, or other type, and in this embodiment, is a gear.

[0047] A sand discharge valve 7 is slidably mounted on the bottom of the average density measurement chamber 1. It is provided with a sand discharge hole, the shape and size of which are adapted to the sand outlet 5. The sand discharge valve 7 is elongated, with a rack formed at one end. The rack meshes with a drive wheel for transmission connection. Driven by the drive wheel, the sand discharge valve 7 slides on a specially designed guide rail. The sand discharge valve 7 can be operatively moved to close the sand outlet 5 or to connect the sand discharge hole with the sand outlet 5. Specifically, when sand discharge is required, the sand discharge valve 7 slides under the drive wheel, connecting the sand discharge hole with the sand outlet 5. When sand discharge is not required, the sand discharge valve 7 slides to close the sand outlet 5. The arrangement of the sand discharge motor 6, sand discharge valve 7, drive wheel, and sand outlet 5 in this embodiment allows the sand discharge valve 7 to slide under the drive wheel, operatively closing or connecting the sand outlet 5, facilitating controlled sand discharge and subsequent operation and repeated measurements. It is easy to understand that in other embodiments, the driving wheel is a pulley, and both ends of the sand discharge valve 7 are connected to the driving wheel through a transmission belt, and the driving wheel drives the bidirectional movement of the sand discharge valve 7 through forward and reverse rotation.

[0048] Furthermore, the sediment average density measuring mechanism of this embodiment also includes a fixed support 8, which is arranged outside the average density measuring chamber 1, and the average density measuring chamber 1 and the fixed support 8 are spaced apart. The fixed support 8 is arranged outside the average density measuring chamber 1 and spaced apart from each other, which can ensure that the normal operation of the average density measuring chamber 1 is not disturbed while playing a certain supporting and protective role, thereby reducing the risk of damage to the device due to external impacts, etc. When sediment is added, the fixed support 8 can prevent the average density measuring chamber 1 from shaking violently. After the sediment is filled, the distance between the average density measuring chamber 1 and the fixed support 8 can ensure that the mass of the average density measuring chamber 1 is not affected by external factors, thereby ensuring the accuracy of the measurement.

[0049] Furthermore, in this embodiment, a sand feeding pipe 17 is formed at the sand feeding port 4 of the average density measurement chamber 1. One end of the sand feeding pipe is sealed with the sand feeding port 4, and the other end of the sand feeding pipe is located directly below the discharge port 15. The provision of the sand feeding pipe 17 at the sand feeding port 4 of the average density measurement chamber 1, with one end sealed with the sand feeding port 4 and the other end located directly below the discharge port 15, ensures that the sand falling from the discharge port 15 of the mixing chamber 10 accurately enters the average density measurement chamber 1, preventing sand from spilling, and improving measurement efficiency and accuracy.

[0050] Furthermore, the sediment average density measuring device of this embodiment also includes a computer and a display 18. The computer is electrically connected to the meter 3 and the multiple acoustic rangefinders 2. The computer is used to calculate the sediment average density based on the data measured by the meter 3 and the multiple acoustic rangefinders 2. The display 18 is electrically connected to the computer and is used to display the sediment average density. The computer and display 18 enable automated data processing and result display for the sediment average density measuring device. The computer automatically calculates the sediment average density based on the data measured by the meter 3 and the acoustic rangefinders 2, and the display 18 then intuitively displays the density value. The addition of the computer and display 18 makes the calculation and display of measurement results more automated and intuitive. The computer quickly and accurately calculates the sediment average density based on the measurement data, and the display 18 displays the results in real time, reducing errors caused by manual calculation and recording, and improving measurement efficiency and accuracy.

[0051] Compared with the prior art, the present invention has the following beneficial effects:

[0052] The quantitative sand conveying device of the present application cooperates with the mixing bin 10 through the air pump 9 of the sand suction mechanism, and uses the suction pipe 14 to realize the sand suction function. The stirring motor 11 drives the stirring impeller 12 to stir the mud and sand in the mixing bin 10 to avoid mud and sand accumulation and blockage, and at the same time make the mud and sand evenly distributed. The sand adding valve 13 can control the opening and closing of the drop port 15 to realize quantitative sand dropping; the sand receiving frame 19 of the conveying mechanism receives the mud and sand falling from the drop port, and the side plates 24 abut against the surface of the conveyor belt 22 to prevent mud and sand from overflowing, and the cross-sectional size formed by the top plate 23, side plates 24 and the surface of the conveyor belt 22 is always fixed. After the mud and sand are evenly mixed, the speed of the conveyor belt 22 is controlled to be constant, so that the amount of mud and sand passing through the cross-sectional area formed by the top plate 23, side plates 24 and the surface of the conveyor belt 22 per unit time is always consistent. The conveyor belt 22 is driven by the conveying motor 21 to transport the mud and sand to the specified position, thereby realizing the quantitative transportation of mud and sand as a whole.

[0053] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of this application, it should be understood that if the terms "upper", "lower", "left", "right", etc. indicate an orientation or position relationship, they are based on the orientation or position relationship shown in the drawings. This is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0054] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A sediment quantitative conveying device, characterized by: It includes a sand suction mechanism and a conveying mechanism, wherein: The sand suction mechanism includes an air pump, a stirring chamber, a stirring motor, a stirring impeller, a sand adding valve and a suction pipe; The mixing bin is fixedly arranged, a ventilation port and a sand suction port are provided at the upper end of the mixing bin, and a material discharge port is provided at the bottom of the mixing bin; The air pump is fixedly arranged, and the air inlet of the air pump is sealedly connected to the vent; One end of the suction pipe is sealedly connected to the sand suction port; The stirring motor is fixedly arranged on the stirring bin; The stirring impeller is arranged inside the stirring chamber, and the stirring impeller is coaxially connected to the rotating shaft of the stirring motor; The sand-filling valve is slidably mounted on the bottom of the mixing bin, and a sand-filling hole is provided on the sand-filling valve. The sand-filling valve can be operatively moved to close the material discharge port or to connect the sand-filling hole with the material discharge port. The conveying mechanism includes a sand receiving frame, a bracket, a conveying motor and a conveyor belt; The conveyor belt is installed on the bracket; the conveying motor is connected to the conveyor belt; The sand receiving frame is located below the material dropout port, and includes a top plate, two side plates and a funnel. The top plate is horizontally arranged above the conveyor belt, and the two side plates are fixedly installed on both sides of the top plate, and the lower edges of the two side plates are in contact with the upper surface of the conveyor belt; the funnel is fixedly installed above the top plate and communicates with the space below the top plate.

2. The sediment quantitative conveying device according to claim 1, characterized in that: The sand suction mechanism further comprises a filter screen, which is installed at the connection between the air inlet of the air pump and the vent.

3. The sediment quantitative conveying device according to claim 1, characterized in that: The conveying mechanism further includes a control circuit, which includes a power supply and a sliding rheostat. The power supply is connected in series with the conveying motor via the sliding rheostat.

4. The sediment quantitative conveying device according to claim 1, characterized in that: A pulley is installed on the rotating shaft of the conveying motor, and the conveyor belt includes two rotating shafts and a flat belt arranged on the two rotating shafts; the pulley is connected to one of the rotating shafts of the conveyor belt through a belt.

5. The sediment quantitative conveying device according to any one of claims 1 to 4, characterized in that: The device also includes a sediment average density measuring mechanism, which includes an average density measuring chamber, an acoustic rangefinder, and a meter; The upper wall of the average density measuring chamber is formed with a sand adding port, and the bottom of the average density measuring chamber is formed with a sand discharging port, the sand adding port is connected to the material discharge port, and the sand discharging port is located just above the sand receiving frame; The average density measuring chamber is fixedly connected to the meter; The meter is fixedly arranged and used to measure the mass of the average density measuring chamber and the sediment; There are multiple acoustic wave rangefinders, and the multiple acoustic wave rangefinders are all installed on the inner top of the average density measurement chamber.

6. The sediment quantitative conveying device according to claim 5, characterized in that: The sediment average density measuring mechanism further includes a sediment discharge motor and a sediment discharge valve. The sediment discharge motor is fixedly arranged on the outside of the average density measuring chamber wall. A driving wheel is installed on the driving shaft of the sediment discharge motor. The sand discharge valve is slidably installed on the bottom of the average density measuring chamber. A sand discharge hole is opened on the sand discharge valve. The sand discharge valve is transmission-connected to the driving wheel. The sand discharge valve can slide under the drive of the driving wheel. The sand discharge valve can be operatively moved to close the sand outlet or moved to the sand discharge hole to be connected to the sand outlet.

7. The sediment quantitative conveying device according to claim 5, characterized in that: The meter is a hanging scale, and a hanging part of the hanging scale is fixedly connected to the top of the average density measurement bin, and the hanging part is a hook or a hanging rope.

8. The sediment quantitative conveying device according to claim 7, characterized in that: The sediment average density measuring mechanism further includes a fixed support, which is arranged outside the average density measuring chamber, and the average density measuring chamber is spaced apart from the fixed support.

9. The sediment quantitative conveying device according to claim 5, characterized in that: A sand adding pipe is formed at the sand adding port of the average density measuring chamber, one end of the sand adding pipe is sealedly connected to the sand adding port, and the other end of the sand adding pipe is located directly below the material dropping port.

10. The sediment quantitative conveying device according to claim 5, characterized in that: The sediment average density measuring mechanism also includes a computer and a display. The computer is electrically connected to the meter and the multiple acoustic rangefinders. The computer is used to calculate the sediment average density based on the data measured by the meter and the multiple acoustic rangefinders. The display is electrically connected to the computer and is used to display the sediment average density.

Images