Coal content metering bin for coal-water mixtures

Abstract

The utility model discloses a coal content measuring bin for coal and water mixture, including outer storehouse, the inside wall upper side fixed connection of outer storehouse has the uniformly distributed damping base, one side fixed connection has a hollow framework inner storehouse to four damping base center of outer storehouse, the inner wall fixed connection of hollow framework inner storehouse has the uniformly distributed carbon steel screen, the lower surface front side and rear side of outer storehouse are hinged respectively through the sealing bottom plate of hinged joint, the lower surface of two sealing bottom plates is equipped with the uniformly distributed long strip dehydration hole, the upper side fixed connection of hollow framework inner storehouse has pneumatic vibrating pump through mounting bracket, the gas inlet outer connection external air pump of pneumatic vibrating pump, the upper surface left and right symmetry fixed connection of outer storehouse has cylinder mounting bracket, this coal content measuring bin for coal and water mixture, simple operation, low failure rate, the number of workers is few, and the degree of automation is high, can achieve unattended.

Description

Technical Field

[0001] This utility model relates to the field of coal-water mixture metering technology, specifically a coal content metering bin for coal-water mixtures. Background Technology

[0002] Coal-water mixtures typically refer to fluid fuels or raw materials formed by mixing coal and water in a certain proportion. The core purpose is to improve the fluidity, combustion efficiency, or transportation convenience of coal through physical or chemical means. They are mainly used in energy, chemical and other fields. Before using coal-water mixtures, it is necessary to measure the coal content, which requires a metering bin to measure the content of solid coal.

[0003] Because the concentration of coal-water mixtures fluctuates greatly and is very unstable, and coal powder in the mixture is very easy to precipitate, it is not feasible, inaccurate, and complicated to measure the weight of coal powder in coal-water mixtures using concentration meters and flow meters. Therefore, we propose a coal content metering bin for coal-water mixtures. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the existing defects and provide a coal content metering bin for coal-water mixtures. It is simple to operate, has a low failure rate, requires few workers, and has a high degree of automation. It can be operated unattended and can effectively solve the problems in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a coal content metering bin for coal-water mixtures, comprising an outer bin, with uniformly distributed vibration damping bases fixedly connected to the upper side of the inner wall of the outer bin, and a hollow frame inner bin fixedly connected to the side of the four vibration damping bases facing the center of the outer bin, with uniformly distributed carbon steel screens fixedly connected to the inner wall of the hollow frame inner bin. It is simple to operate, has a low failure rate, requires fewer workers, and has a high degree of automation, enabling unattended operation.

[0006] Furthermore, the lower surface of the outer compartment is hinged to a sealing base plate on the front and rear sides, respectively. The lower surfaces of the two sealing base plates are provided with evenly distributed elongated dewatering holes to achieve the function of drainage.

[0007] Furthermore, a pneumatic vibration pump is fixedly connected to the upper side of the hollowed-out frame inner chamber via a mounting bracket. The air inlet of the pneumatic vibration pump is connected to an external air pump to achieve the function of rapid dehydration.

[0008] Furthermore, cylinder mounting brackets are symmetrically fixedly connected to the upper surface of the outer compartment. Drive cylinders are symmetrically rotatably connected to the interior of the two cylinder mounting brackets. The telescopic ends of the two front drive cylinders are rotatably connected to the rear end of the front sealing base plate, and the telescopic ends of the two rear drive cylinders are rotatably connected to the front end of the rear sealing base plate. The air inlets of the four drive cylinders are externally connected to an external air pump, which drives the base plate to open or close.

[0009] Furthermore, the upper surface of the outer compartment is fixedly connected with uniformly distributed weighing sensors, and the three weighing sensors are bidirectionally electrically connected to an external controller to realize the weighing function.

[0010] Furthermore, the carbon steel screen is a carbon steel screen with a mesh size of 14 or less, which enables the filtering of solid coal with a specified particle size.

[0011] Furthermore, the outer hull is made of Q235 steel plate to enhance its strength.

[0012] Furthermore, the sealing base plate is made of 304 stainless steel, which is corrosion-resistant and has high strength; and an organic nanomaterial is sprayed onto the sealing surface. This nanomaterial is non-toxic, odorless, environmentally friendly, and smooth, and has strong anti-corrosion and anti-adhesion properties, which can greatly weaken the adhesion of coal slime, with excellent results.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: This coal content metering bin for coal-water mixtures has the following advantages:

[0014] 1. The two sets of metering chambers can be used together and switched between each other to achieve continuous and uninterrupted metering, which solves the metering problem of special liquids with unstable concentration and low viscosity in liquid mixtures.

[0015] 2. This device is simple, practical, and reliable, with an accuracy rate of over 90%. The entire process is PLC controlled, making it easy to operate, with a low failure rate, requiring fewer workers, and boasting a high degree of automation, enabling unattended operation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the present invention during an explosion.

[0018] In the diagram: 1 Outer chamber, 2 Vibration damping base, 3 Hollowed-out frame inner chamber, 4 Carbon steel screen, 5 Pneumatic vibration pump, 6 Sealed base plate, 7 Long strip dehydration hole, 8 Cylinder mounting bracket, 9 Drive cylinder, 10 Weighing sensor. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1-2This embodiment provides a technical solution: a coal content metering chamber for coal-water mixtures, including an outer chamber 1. The upper inner wall of the outer chamber 1 is fixedly connected with uniformly distributed vibration damping bases 2 (rubber vibration damping supports are selected for the vibration damping bases 2). A hollowed-out frame inner chamber 3 is fixedly connected to the side of the four vibration damping bases 2 facing the center of the outer chamber 1. The inner wall of the hollowed-out frame inner chamber 3 is fixedly connected with uniformly distributed carbon steel screens 4. The lower surface of the outer chamber 1 has sealing base plates 6 hinged to the front and rear sides via hinges. The sealing base plates are made of 304 stainless steel, which is corrosion-resistant and has high strength. An organic nanomaterial is also sprayed onto the sealing surface. This nanomaterial is non-toxic, odorless, environmentally friendly, and smooth, possessing strong anti-corrosion and anti-adhesion properties. It can significantly weaken the adhesion of coal slime, with excellent results. The lower surfaces of the two sealed base plates 6 are provided with evenly distributed elongated dewatering holes 7. A pneumatic vibration pump 5 is fixedly connected to the upper side of the hollowed-out frame inner chamber 3 via a mounting bracket. The air inlet of the pneumatic vibration pump 5 is externally connected to an external air pump. Cylinder mounting brackets 8 are symmetrically fixedly connected to the upper surface of the outer chamber 1. Drive cylinders 9 are symmetrically rotatably connected to the interior of the two cylinder mounting brackets 8, one in front and one behind. The extension and retraction ends of the two front drive cylinders 9 are rotatably connected to the rear end of the front sealed base plate 6, and the extension and retraction ends of the two rear drive cylinders 9 are rotatably connected to the front end of the rear sealed base plate 6. The air inlets of the four drive cylinders 9 are externally connected to… An external air pump is connected to the outer chamber 1. The upper surface of the outer chamber 1 is fixedly connected with uniformly distributed weighing sensors 10. The three weighing sensors 10 are bidirectionally electrically connected to the external controller. The carbon steel screen 4 is a carbon steel screen with a mesh size of 14 or less. The outer chamber 1 is made of Q235 steel plate. First, the upper ends of the three weighing sensors 10 are installed at the designated work position. The collected coal-water mixture is injected into the hollow frame inner chamber 3. At the same time, the external air pump and the pneumatic vibration pump 5 are running. The high-pressure gas discharged by the air compressor is connected to the product air inlet through the air pipe. When the gas pushes the piston upward, the gas in the upper chamber of the piston is compressed. The compressed gas is discharged through the exhaust hole. When the piston reaches the end point, the gas automatically switches the ventilation direction through the groove and the air passage, so that the gas enters the upper chamber of the piston.The high-pressure gas pushes the piston downwards to the end point, ending the first cycle and starting the second cycle. This continuous reciprocating cycle causes the vibrator to produce translational and swaying motions, thereby generating vibrational force. This, in turn, drives the hollow frame inner chamber 3 to vibrate at a high frequency. The vibration damping base 2 utilizes the high elasticity, viscoelasticity, and energy dissipation characteristics of rubber material to absorb and convert vibrational energy through deformation, preventing the outer chamber 1 from vibrating along with the hollow frame inner chamber 3. The high-frequency vibration of the hollow frame inner chamber 3 dehydrates the coal-water mixture. The wastewater generated at this time is discharged through the long dehydration hole 7. At this point, only solid coal remains in the hollow frame inner chamber 3. At this time, the external controller can be adjusted, and the three weighing sensors 10 operate. The three weighing sensors 10 measure the total weight of the weighing chamber (the weighing sensors 10 include elastic elements). The system consists of a strain gauge and a Wheatstone bridge. The elastic element is made of alloy steel. The strain gauges are precision electronic components attached to the surface of the elastic element. The circuit structure consists of four strain gauges. Its function is to convert the tiny resistance changes of the four strain gauges into axial tensile force when the weight of the measuring chamber acts on the weighing sensor 10. This force is transmitted to the internal elastic element. Because the strain gauges are tightly attached to the surface of the elastic element, the tiny deformation of the elastic element directly drives the synchronous deformation of the strain gauges. When the elastic element is stretched, the strain gauges are "stretched"; when the elastic element is compressed, the strain gauges are "shortened". The core of the strain gauge is a "resistance wire / semiconductor film". Its resistance value (R) is related to its length (L), cross-sectional area (S), and resistivity (ρ) (formula: R=ρ×L / S).When a strain gauge deforms with the elastic element, its resistance changes accordingly. The resistance change (ΔR) of a single strain gauge is extremely small (typically only a few ohms or even milliohms), making direct measurement impossible. Therefore, four strain gauges are arranged in a Wheatstone bridge to amplify the signal and cancel interference through circuit characteristics. The weak voltage signal is amplified by a signal conditioning module, and the digital signal is transmitted to a microcontroller (MCU) or weighing instrument. The MCU calculates the actual weight value based on the sensor's calibration parameters (pre-calibrated with standard weights to establish a correspondence between digital signal value and weight), and transmits it to an external controller for data storage and analysis. (The weight at this point should be less than the weight of the weighing chamber). After the measurement is completed, the contents of the weighing chamber need to be... When solid coal is discharged, the external air pump can be adjusted, and the four drive cylinders 9 operate simultaneously. When the extension ends of the two front drive cylinders 9 extend simultaneously, they will push the rear end of the front sealing base plate 6 to rotate clockwise using its front hinge point. When the extension ends of the two rear drive cylinders 9 extend simultaneously, they will push the rear end of the rear sealing base plate 6 to rotate counterclockwise using its rear hinge point, thereby opening the two sealing base plates 6. At this time, the solid coal inside the metering chamber is affected by gravity and discharged from the metering chamber to the outside of the device. Two sets of metering chambers can be installed at the workstation. When one set of metering chambers is feeding and dewatering, the other set has already completed dewatering and is performing weighing operations. The two sets of metering chambers are used in conjunction to continuously measure.

[0021] The working principle of the coal content metering bin for coal-water mixture provided by this utility model is as follows: First, the upper ends of three weighing sensors 10 are installed on the designated work station. The collected coal-water mixture is injected into the hollow frame inner chamber 3. At the same time, the external air pump and pneumatic vibration pump 5 are operated. The high-pressure gas discharged by the air compressor is connected to the product air inlet through the air pipe. When the gas pushes the piston upward, the gas in the upper air chamber of the piston is compressed. The compressed gas is discharged through the exhaust hole. When the piston reaches the end point, the gas automatically switches the ventilation direction through the groove and air passage, so that the gas enters the upper air chamber of the piston. High-pressure gas pushes the piston downwards to the end point, ending the first cycle and starting the second cycle. This continuous reciprocating cycle causes the vibrator to produce translational and swaying motions, generating vibrational force. This force then drives the hollow frame inner chamber 3 to vibrate at a high frequency. The vibration damping base 2 utilizes the high elasticity, viscoelasticity, and energy dissipation characteristics of rubber material to absorb and convert vibrational energy through deformation, preventing the outer chamber 1 from vibrating along with the hollow frame inner chamber 3. The high-frequency vibration of the hollow frame inner chamber 3 dehydrates the coal-water mixture. The wastewater generated at this time is discharged through the elongated dehydration hole 7. At this point, only solid coal remains in the hollow frame inner chamber 3. At this point, the external controller can be adjusted, and the three weighing sensors 10 will operate. Three weighing sensors 10 measure the overall weight of the metering chamber. After the measurement is completed, when it is necessary to discharge the solid coal inside the metering chamber, the external air pump can be adjusted, and the four drive cylinders 9 will operate simultaneously. When the extension ends of the two front drive cylinders 9 extend simultaneously, they will push the rear end of the front sealing base plate 6 to rotate clockwise using its front hinge point. When the extension ends of the two rear drive cylinders 9 extend simultaneously, they will push the rear end of the rear sealing base plate 6 to rotate counterclockwise using its rear hinge point, thereby opening the two sealing base plates 6. At this time, the solid coal inside the metering chamber will be discharged from the metering chamber to the outside of the device due to gravity.

[0022] It is worth noting that the pneumatic vibration pump 5, drive cylinder 9 and weighing sensor 10 disclosed in the above embodiments can be freely configured according to the actual application scenario. It is recommended to use GT series pneumatic vibrator for pneumatic vibration pump 5, SMC type drive cylinder for drive cylinder 9, and PST-300kg model weighing sensor for weighing sensor 10.

[0023] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A coal content metering bin for coal-water mixtures, characterized in that: The outer chamber (1) is fixedly connected to the upper side of the inner wall of the outer chamber (1) with uniformly distributed vibration damping bases (2). The four vibration damping bases (2) facing the center of the outer chamber (1) are fixedly connected to a hollow frame inner chamber (3). The inner wall of the hollow frame inner chamber (3) is fixedly connected to a uniformly distributed carbon steel screen (4).

2. The coal content metering bin for coal-water mixtures according to claim 1, characterized in that: The lower surface of the outer compartment (1) is hinged with sealing base plates (6) on the front and rear sides respectively, and the lower surfaces of the two sealing base plates (6) are provided with evenly distributed elongated dewatering holes (7).

3. The coal content metering bin for coal-water mixtures according to claim 1, characterized in that: The upper side of the hollowed-out frame inner chamber (3) is fixedly connected to a pneumatic vibration pump (5) via a mounting bracket, and the air inlet of the pneumatic vibration pump (5) is connected to an external air pump.

4. A coal content metering bin for a coal-water mixture according to claim 2, characterized in that: The upper surface of the outer compartment (1) is symmetrically fixed with cylinder mounting brackets (8). The two cylinder mounting brackets (8) are symmetrically rotatably connected with drive cylinders (9) in the front and back respectively. The telescopic ends of the two drive cylinders (9) on the front side are rotatably connected to the rear end of the sealing base plate (6) on the front side respectively. The telescopic ends of the two drive cylinders (9) on the rear side are rotatably connected to the front end of the sealing base plate (6) on the rear side respectively. The air inlets of the four drive cylinders (9) are respectively connected to external air pumps.

5. A coal content metering bin for a coal-water mixture according to claim 1, characterized in that: The upper surface of the outer compartment (1) is fixedly connected with uniformly distributed weighing sensors (10), and the three weighing sensors (10) are respectively bidirectionally electrically connected to the external controller.

6. A coal content metering bin for a coal-water mixture according to claim 1, characterized in that: The carbon steel screen (4) is a carbon steel screen with a mesh size of 14 or less.

7. A coal content metering bin for coal-water mixtures according to claim 1, characterized in that: The outer hull (1) is made of Q235 steel plate.

8. A coal content metering bin for a coal-water mixture according to claim 4, characterized in that: The sealing base plate (6) is made of 304 stainless steel.

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