Intelligent medium allocation device for coal preparation plant

Abstract

The utility model provides an intelligent medium allocation device for a coal preparation plant, and belongs to the technical field of medium allocation devices. Comprising a stirring barrel; the stirring part is mounted in the stirring barrel and is used for stirring dense medium powder and water; the water inlet pipe is mounted on the stirring barrel and is used for being externally connected with a water adding device so as to automatically add water into the stirring barrel; the spiral feeding barrel is mounted on the stirring barrel, and the spiral feeding barrel is used for conveying dense medium powder into the stirring barrel; and the number of the material storage boxes is at least two, the two material storage boxes are located on the outer side of the spiral feeding barrel, and the material storage boxes are used for storing heavy medium powder. Through the cooperation of the water inlet pipe, the spiral feeding cylinder, the material guide cylinder, the weighing part and other structures, the purpose of efficient medium distribution operation is achieved, and the stirring part in the stirring barrel is matched with the wavy inner wall, so that materials are fully and uniformly mixed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of medium preparation device, especially to a kind of intelligent medium preparation device for coal preparation plant. BACKGROUND

[0002] In the coal processing process of coal preparation plant, medium preparation link is crucial.The main purpose of medium preparation is to mix heavy medium powder and water according to certain proportion, form suitable suspension, and be used for coal separation.The precision and efficiency of medium preparation directly affect the quality of coal separation and the production benefit of entire coal preparation plant.

[0003] However, in many current coal preparation plants, artificial medium preparation and on-site operation mode are still used, and this mode has many disadvantages.Firstly, artificial medium preparation is difficult to accurately control the proportion of heavy medium powder and water, which can easily lead to unstable medium preparation quality, and further affect the coal separation effect.Secondly, artificial operation is inefficient, and cannot meet the demand of large-scale production, and often becomes the bottleneck in production process during production peak. UTILITY MODEL CONTENT

[0004] The technical problem to be solved by the utility model is to provide an intelligent medium preparation device for coal preparation plant, to solve the technical problems of low efficiency of existing artificial medium preparation and poor material mixing uniformity.

[0005] Technical solution: To achieve the above object, the utility model discloses the following technical scheme: an intelligent medium preparation device for coal preparation plant, comprising: a stirring barrel, a stirring part is installed in the stirring barrel and is used for stirring heavy medium powder and water, a water inlet pipe is installed on the stirring barrel, the water inlet pipe is used for connecting an external water adding device to realize automatic water adding in the stirring barrel, a spiral feeding cylinder is installed on the stirring barrel, and the spiral feeding cylinder is used for conveying heavy medium powder into the stirring barrel, at least two storage boxes are arranged, the two storage boxes are located on the outer side of the spiral feeding cylinder, and the storage boxes are used for storing heavy medium powder, at least two guide cylinders are arranged, the two guide cylinders correspond to the two storage boxes respectively, one end of the guide cylinder is connected with the spiral feeding cylinder, and the other end is located at the discharge port of the storage box and is used for guiding the heavy medium powder in the storage box into the spiral feeding cylinder, a weighing part is located below the storage box and is used for weighing the heavy medium powder in the storage box in real time, wherein a liquid level meter and a temperature sensor are further arranged in the stirring barrel, the liquid level meter is used for accurately monitoring the liquid height in the barrel to ensure the accuracy of the water adding process, the temperature sensor can monitor the material temperature in the barrel in real time to avoid affecting the medium preparation quality due to abnormal temperature, the water inlet pipe can adopt a steel pipe with an anticorrosive coating, a sealing washer is arranged at the connection between the water inlet pipe and the stirring barrel to prevent water leakage, the external water adding device can be provided with a flow regulating valve and a pressure sensor, the flow regulating valve is used for accurately controlling the water adding speed, and the pressure sensor is used for monitoring the water adding pressure to ensure the stability of the water adding process, the connection between the spiral feeding cylinder and the stirring barrel adopts a flange connection mode, and a sealing gasket is arranged in the middle to prevent the heavy medium powder from leaking, the storage box is designed as a funnel shape, the upper part of the storage box is provided with a large opening to facilitate feeding, the lower part of the storage box is connected with the discharge port, an anti-caking device is arranged in the storage box to prevent the heavy medium powder from caking after being placed for a long time, the guide cylinder is smooth, and a coating with a low friction coefficient can be coated on the inner wall of the guide cylinder to reduce the resistance of the heavy medium powder during conveying, and the weighing part adopts a high-precision and high-sensitivity weighing sensor, such as a resistance strain type weighing sensor, can transmit the weighing data to the control system in real time, and has an automatic calibration function to ensure the weighing accuracy.

[0006] In a further embodiment, a flow detector is installed on the water inlet pipe, and the flow detector is used for detecting the water flow of the water inlet pipe in real time, wherein the flow detector can be an ultrasonic flow detector, which measures the water flow rate by emitting and receiving ultrasonic signals, has the advantages of non-contact measurement, high precision and being not affected by water quality, etc., the flow detector can be provided with a display screen to display the water flow data in real time, and can be connected with the control system through a data line to transmit the data to the control system, the probe part of the flow detector should have waterproof and anticorrosion functions and can be protected by a special coating or sealing material, and in addition, the flow detector can be provided with a calibration button to facilitate regular calibration to ensure the measurement accuracy.

[0007] In a further embodiment, a baffle is slidably connected to the discharge opening of the storage bin, and the baffle is used to control the opening and closing of the discharge opening of the storage bin. The baffle can be made of high-strength engineering plastic or metal alloy, and the surface thereof is polished to reduce the friction between the baffle and the discharge opening. The edge of the baffle can be designed as a rounded corner to avoid scratching the discharge opening during sliding. In addition, the baffle can be designed as a double-layer structure filled with sound insulation material to reduce the noise generated during movement of the baffle.

[0008] In a further embodiment, a telescopic rod is installed on the storage bin, and the telescopic end of the telescopic rod is stably connected to the baffle. The telescopic rod is used to control the movement of the baffle. The telescopic rod can be an electric push rod, and the internal motor thereof is a high-performance DC motor with stable speed and large torque. The connection between the telescopic end of the telescopic rod and the baffle can be through a specially designed connector. The connector is designed to be adjustable, which facilitates fine adjustment of the position of the baffle during installation and debugging. The control circuit of the telescopic rod has overload protection, overvoltage protection, and undervoltage protection functions to ensure stable operation under various working conditions.

[0009] In a further embodiment, a support table is located below the weighing part, and the support table is used to provide support and installation position for the weighing part and the spiral feeding cylinder. The support table can be a frame structure welded from I-beams and channel steels, and the surface thereof is paved with steel plates. The thickness of the steel plates is determined according to the bearing weight, which is generally between 10-30 mm. The bottom of the support table can be provided with anchor bolt holes to firmly fix the support table to the ground through anchor bolts. The side of the support table can be provided with a climbing ladder and a protective fence to facilitate installation, maintenance, and maintenance of the spiral feeding cylinder and the weighing part. Shock-absorbing rubber pads can be provided at the contact parts of the support table and the weighing part and the spiral feeding cylinder to reduce vibration transmission during equipment operation.

[0010] In a further embodiment, power sources are provided on the stirring barrel and the spiral feeding cylinder to drive the rotation of the stirring part and the spiral feeding rod in the spiral feeding cylinder. The power sources on the stirring barrel and the spiral feeding cylinder can be driving motors. The driving motor can be a three-phase asynchronous motor, which has the advantages of simple structure, high reliability, and convenient maintenance. The shell of the motor is designed to be explosion-proof to effectively prevent explosion accidents in flammable and explosive environments such as coal preparation plants. A coupling can be provided at the connection between the output shaft of the motor and the stirring part and the spiral feeding rod. The coupling can be an elastic coupling, which has the functions of buffering and vibration absorption to protect the motor and the equipment.

[0011] In a further embodiment, the inner wall of the stirring barrel is arranged in a wavy shape to enhance the turbulent effect of the material during stirring, wherein the inner wall of the stirring barrel is arranged in a wavy shape, the shape of the wave can be designed as a sine wave, the curvature radius of the wave crest and wave trough is determined according to the diameter of the stirring barrel and the characteristics of the stirred material; the wavy inner wall can be made by die stamping or casting process to ensure that the wave shape of the inner wall is uniform; a wear-resistant ceramic coating can be provided on the surface of the wavy inner wall to further improve the wear resistance of the inner wall; such wavy inner wall can form complex turbulence at different heights and angles during stirring, increase the collision and mixing opportunities between materials, improve the mixing efficiency, and at the same time can reduce the adhesion of the material on the barrel wall.

[0012] In a further embodiment, the material guide cylinder is below the storage tank and does not contact the storage tank, and the material guide cylinder is matched with the discharge port, wherein the material guide cylinder is below the storage tank and does not contact the storage tank, the gap between the two can be set to 3-8 cm, which can prevent the storage tank from interfering with the material guide cylinder when it expands or contracts slightly or vibrates slightly; the material guide cylinder is matched with the discharge port, the top of the material guide cylinder can be provided with a trumpet-shaped inlet, the angle of the trumpet mouth is between 60°-120°, which facilitates better reception of the heavy medium powder discharged from the discharge port; an adjustable sealing device can be provided at the connection between the material guide cylinder and the discharge port, such as a sealing plate adjusted by a bolt, which can adjust the sealing degree according to the needs to prevent the heavy medium powder from leaking.

[0013] In a further embodiment, the material guide cylinder is inclined, and one end at the low position is connected with the spiral feeding cylinder, wherein the material guide cylinder is inclined, and the inclination angle is between 35°-60°, which is determined according to the angle of repose and flowability test of the heavy medium powder, so that the heavy medium powder can smoothly slide under the action of gravity; the material guide cylinder can be provided with reinforcing rib plates in the inclined direction, and the spacing of the reinforcing rib plates is between 20-50 cm, which can enhance the anti-deformation ability of the material guide cylinder; a flow guide groove can be provided on the inner wall of the material guide cylinder, and the depth of the flow guide groove is between 1-3 cm, which can guide the heavy medium powder to flow in a specific direction, further improving the conveying efficiency.

[0014] Beneficial effects: 1. Through the cooperation of the water inlet pipe, the weighing part below the storage tank and the spiral feeding cylinder, accurate and automatic addition of water and heavy medium powder is realized; the water inlet pipe ensures water addition; the weighing part accurately weighs the weight of the heavy medium powder in the storage tank; the heavy medium powder is accurately controlled; the spiral feeding cylinder stably conveys the heavy medium powder to the stirring barrel; the purpose of efficient medium preparation is achieved, and the time for manual measurement, carrying and feeding of the material is reduced.

[0015] 2. By cooperation of the stirring part in the stirring barrel and the wavy inner wall, the material is fully and uniformly mixed; the stirring part is driven by the power source to strongly stir the heavy medium powder and water, and the wavy inner wall makes the material form complex turbulence in the stirring process, changes the flow path of the material, fully collides and mixes the material in different directions, avoids the mixing dead angle that may occur in the traditional stirring mode, and achieves the purpose of good material mixing uniformity. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the present application or prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without creative labor.

[0017] Figure 1 It is a structural schematic diagram of the present application.

[0018] Figure 2 It is Figure 1 a main sectional structural schematic diagram.

[0019] Figure 3 It is a structural schematic diagram of the storage box.

[0020] The reference signs in the drawings are: 1, stirring barrel; 101, stirring part; 2, water inlet pipe; 201, flow detector; 3, spiral feeding cylinder; 301, material guide cylinder; 4, storage box; 401, baffle; 5, supporting table; 6, weighing part; 7, telescopic rod. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical scheme and advantages of the present application more clear, the technical scheme in the present application is described clearly and completely. Obviously, the described embodiments are part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the present application.

[0022] The embodiment of the present application provides an intelligent medium matching device for a coal preparation plant, which solves the technical problems of low efficiency of manual medium matching and poor material mixing uniformity. In actual use, the purposes of efficient medium matching operation and good material mixing uniformity are achieved.

[0023] In order to better understand the above technical solutions, the above technical solutions will be described in detail in combination with the drawings in the specification and specific embodiments.

[0024] Refer toFigures 1-3 An intelligent medium preparation device for a coal preparation plant, comprising: a stirring barrel 1; a stirring part 101 installed in the stirring barrel 1 for stirring heavy medium powder and water; a water inlet pipe 2 installed on the stirring barrel 1, the water inlet pipe 2 being used for connecting an external water adding device to automatically add water into the stirring barrel 1; a spiral feeding cylinder 3 installed on the stirring barrel 1, the spiral feeding cylinder 3 being used for feeding heavy medium powder into the stirring barrel 1; at least two storage boxes 4, both of which are located outside the spiral feeding cylinder 3, the storage boxes 4 being used for storing heavy medium powder; at least two material guide cylinders 301, both of which correspond to the two storage boxes 4, one end of each of the material guide cylinders 301 being connected with the spiral feeding cylinder 3 and the other end being located at a discharging port of the storage box 4, the material guide cylinders 301 being used for guiding the heavy medium powder in the storage box 4 into the spiral feeding cylinder 3; and a weighing part 6 located below the storage box 4, the weighing part 6 being used for weighing the heavy medium powder in the storage box 4 in real time.

[0025] The stirring barrel 1 provides a closed space environment for stirring heavy medium powder and water, receiving heavy medium powder fed by the spiral feeding cylinder 3 and other operations, contains materials in the medium preparation process, and ensures that the medium preparation process is carried out in a relatively stable environment; the stirring part 101 realizes the full mixing of heavy medium powder and water through stirring action, makes them uniformly distributed, avoids local concentration difference, and provides high-quality medium suspension with stable quality for the subsequent coal preparation process; the water inlet pipe 2 realizes the connection of the external water adding device and the stirring barrel 1, ensures that water can be automatically and stably added into the stirring barrel 1, and guarantees the continuity and controllability of water supply in the medium preparation process; the spiral feeding cylinder 3 realizes the stable and orderly feeding of heavy medium powder in the storage box 4 into the stirring barrel 1, guarantees the continuity of heavy medium powder supply, and can control the feeding speed and quantity, which is helpful for accurate medium preparation; the storage box 4 realizes the storage function of heavy medium powder, at least two storage boxes 4 are provided, only one of which is started when in use, and this design is to ensure the continuity of feeding and the accuracy of weighing; when the heavy medium powder in the storage box 4 being used is almost exhausted, the storage box 4 is closed and another storage box 4 is opened, which ensures that the spiral feeding cylinder 3 is always supplied with heavy medium powder and realizes uninterrupted feeding; and during the operation of a single storage box 4, the weighing part 6 can accurately measure the weight of heavy medium powder without being disturbed by other storage boxes 4, avoids the weighing error caused by simultaneous feeding or switching of multiple storage boxes 4, and guarantees the accuracy of medium proportion.

[0026] A flow detector 201 is installed on the water inlet pipe 2, and the flow detector 201 is used for detecting the water flow of the water inlet pipe 2 in real time.

[0027] The flow detector 201 realizes the real-time and accurate detection of the water flow of the water inlet pipe 2, and through data feedback, the water adding speed can be adjusted in time to ensure the stability of the water flow, and then the accuracy of the proportion of heavy medium powder and water in the medium preparation process is ensured.

[0028] A baffle 401 is slidably connected to the discharge port of the storage tank 4, and the baffle 401 is used to control the opening and closing of the discharge port of the storage tank 4.

[0029] The opening and closing state of the discharge port of the storage tank 4 is controlled, and whether the heavy medium powder enters the guide cylinder 301 through the discharge port can be determined according to the medium matching requirement, which effectively prevents the heavy medium powder from leaking when it is not needed, and ensures the controllability of the medium matching process.

[0030] A telescopic rod 7 is installed on the storage tank 4, and the telescopic end of the telescopic rod 7 is stably connected with the baffle 401, and the telescopic rod 7 is used to control the movement of the baffle 401.

[0031] Through the connection with the baffle 401, the movement of the baffle 401 is controlled, so that the opening and closing of the baffle 401 can be remotely or automatically operated, which improves the automation degree and operation convenience of the medium matching process.

[0032] A support table 5 is below the weighing part 6, and the support table 5 is used to provide support and installation position for the weighing part 6 and the screw feeder cylinder 3.

[0033] The weighing part 6 and the screw feeder cylinder 3 are provided with stable support and appropriate installation position, which ensures the measurement accuracy of the weighing part 6 and the stable operation of the screw feeder cylinder 3, and reduces the influence of equipment shaking and other factors on the medium matching process.

[0034] A power source is arranged on the stirring barrel 1 and the screw feeder cylinder 3 to drive the rotation of the stirring part 101 and the screw feeder rod in the screw feeder cylinder 3.

[0035] The automatic operation of stirring and feeding is realized, which ensures that the stirring intensity and feeding speed meet the medium matching requirement, and improves the medium matching efficiency.

[0036] The inner wall of the stirring barrel 1 is arranged in a wave shape to enhance the turbulent flow effect of the material during stirring.

[0037] The turbulent flow effect of the material during stirring is enhanced, the mixing of the heavy medium powder and water is more sufficient and uniform, the formation of a static area or a mixing dead angle of the material near the barrel wall is avoided, and the medium matching quality is improved.

[0038] The guide cylinder 301 is below the storage tank 4 and does not contact the storage tank 4, and the guide cylinder 301 is adapted to the discharge port.

[0039] The guide cylinder 301 and the storage tank 4 do not contact each other and are adapted to the discharge port, which reduces the damage of the equipment caused by the friction and collision between the two, avoids the influence of the guide cylinder 301 on the weighing accuracy of the storage tank 4 by the weighing part 6, and ensures that the heavy medium powder can smoothly enter the guide cylinder 301 from the discharge port, thereby improving the service life of the equipment and the stability of the medium matching.

[0040] The guide cylinder 301 is inclined, and one end at the low position is connected with the spiral feeding cylinder 3.

[0041] The effect of smooth flow of the heavy medium powder from the storage box 4 to the spiral feeding cylinder 3 by gravity is realized, the possibility of blockage of the heavy medium powder in the guide cylinder 301 is reduced, the material conveying efficiency is improved, and the continuity of the medium matching process is ensured.

[0042] In the use process, one of the storage boxes 4 is started, the baffle 401 at the bottom of the storage box 4 is opened under the control of the telescopic rod 7, the heavy medium powder in the storage box 4 is discharged through the guide cylinder 301 into the spiral feeding cylinder 3 through the matched discharge port, and then is conveyed to the stirring barrel 1; at the same time, the weighing part 6 accurately weighs the heavy medium powder in the storage box 4 being weighed in real time, and the flow detector 201 on the water inlet pipe 2 also synchronously detects the water flow entering the stirring barrel 1; as the medium matching operation continues, when the heavy medium powder in the storage box 4 being used is about to be emptied, the control system sends an instruction according to the data of the weighing part 6, and the telescopic rod 7 pushes the baffle 401 to close the discharge port of the storage box 4; at the same time, the baffle 401 of the other storage box 4 is opened under the action of the corresponding telescopic rod 7, and starts to supply the heavy medium powder to the spiral feeding cylinder 3, so that the continuity of feeding is ensured; in the whole process, the stirring barrel 1 and the spiral feeding cylinder 3 stably operate under the driving of respective automatic power sources, the stirring part 101 in the stirring barrel 1 continuously stirs, and the wave-shaped inner wall enhances the turbulent flow effect of the material, so that the newly added heavy medium powder is fully mixed with water, and the medium matching operation is stably, efficiently and accurately performed.

[0043] The control device, the water adding device, the density monitor and the discharge port on the stirring barrel required in the above description all belong to the prior art, and are non-essential technical features in the application, so they are not described and drawn in the documents and drawings of the application; and the graphics expressed in the drawings are example graphics, and the purpose is only to more intuitively show the key structure and connection relationship of the intelligent medium matching device for a coal preparation plant.

[0044] The present application covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present application. In order to enable the public to have a thorough understanding of the present application, the specific details are described in the above preferred embodiments of the present application, and the present application can also be completely understood without the description of these details for those skilled in the art. In addition, in order to avoid unnecessary confusion to the essence of the present application, the well-known methods, processes, procedures, elements and circuits are not described in detail.

[0045] The above merely is preferred implementation manner of the present application, it should be pointed out, for ordinary skilled person in the technical field, on the premise of not departing from the principle of the present application, can also make several improvements and refinements, these improvements and refinements also should be regarded as the protection scope of the present application.

Claims

1. An intelligent media blending device for a coal preparation plant, characterized in that, include: Mixing tank (1); A stirring unit (101) is installed inside a stirring tank (1) and is used to stir heavy medium powder and water; Water inlet pipe (2) is installed on the mixing tank (1). The water inlet pipe (2) is used to connect an external water supply device to realize automatic water supply to the mixing tank (1). A spiral feed cylinder (3) is installed on the mixing tank (1) and is used to convey heavy medium powder into the mixing tank (1); At least two storage bins (4) are provided, and both storage bins (4) are located outside the screw feeder (3). The storage bins (4) are used to store heavy medium powder. At least two guide cylinders (301) are provided, and the two guide cylinders (301) correspond to the two storage boxes (4) respectively. One end of the guide cylinder (301) is connected to the screw feeder (3), and the other end is located at the discharge port of the storage box (4) for guiding the heavy medium powder in the storage box (4) into the screw feeder (3). The weighing unit (6) is located below the storage box (4) and is used to weigh the heavy medium powder in the storage box (4) in real time. The inner wall of the mixing tank (1) is designed to be wavy to enhance the turbulence of materials during mixing.

2. The intelligent media blending device for a coal preparation plant according to claim 1, characterized in that, Also includes: A flow detector (201) is installed on the water inlet pipe (2) and is used to detect the water flow of the water inlet pipe (2) in real time.

3. The intelligent media blending device for a coal preparation plant according to claim 1, characterized in that, Also includes: A baffle (401) is slidably connected to the discharge port on the storage box (4). The baffle (401) is used to control the opening and closing of the discharge port on the storage box (4).

4. The intelligent media blending device for a coal preparation plant according to claim 3, characterized in that, Also includes: The telescopic rod (7) is installed on the storage box (4), and the telescopic end of the telescopic rod (7) is stably connected to the baffle (401). The telescopic rod (7) is used to control the movement of the baffle (401).

5. The intelligent media blending device for a coal preparation plant according to claim 1, characterized in that, Also includes: The support platform (5) is located below the weighing part (6) and is used to provide support and installation position for the weighing part (6) and the screw feed cylinder (3).

6. The intelligent media blending device for a coal preparation plant according to claim 1, characterized in that: Both the mixing tank (1) and the spiral feeding cylinder (3) are equipped with a power source to drive the spiral feeding rod inside the mixing section (101) and the spiral feeding cylinder (3) to rotate.

7. The intelligent media blending device for a coal preparation plant according to claim 1, characterized in that: The guide cylinder (301) is located below the storage box (4) and does not contact the storage box (4). The guide cylinder (301) is adapted to the discharge port.

8. The intelligent media blending device for a coal preparation plant according to claim 1, characterized in that: The guide cylinder (301) is inclined, and the lower end is connected to the spiral feed cylinder (3).

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