Dense medium density control device for coal preparation plant
By using the combination of a liquid level sensor and a density meter in the heavy medium density control device of the coal preparation plant, real-time monitoring and automatic adjustment of the density of the heavy medium is achieved, the problem of liquid level fluctuations of qualified medium barrels is solved, and density control is simplified. Improves the efficiency of coal sorting and purification.
Patent Information
- Application Number
- CN202420758480.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-12
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-04-12
AI Technical Summary
During the use of the existing heavy medium density control device of coal preparation plants, the liquid level of qualified medium barrels is prone to be too high or too low, resulting in a lag in density adjustment, which increases the complexity and difficulty of control.
A device including a rotary plate, qualified medium barrel, concentrated medium barrel, water pump, distinction box, U-shaped pipe and diverter valve is designed. Through the cooperation of the liquid level sensor and density meter, real-time monitoring of heavy medium density and Automatic adjustment to ensure that the liquid level is at the set height and prevent precipitation through the stirring section.
It effectively avoids the problem of excessive or low liquid level, simplifies the density control process, improves the efficiency of coal sorting and purification, and reduces the need for manual monitoring.
Smart Images
Figure CN222174388U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of heavy medium density, in particular to a heavy medium density control device for a coal preparation plant. Background Art
[0002] The density control of heavy medium in coal preparation plant refers to the separation of coal and gangue under the action of heavy medium by adjusting the specific density of heavy medium and controlling the flow rate of heavy medium, so as to achieve the purpose of sorting and purifying coal. At present, heavy suspension is generally used as the heavy medium for coal heavy medium sorting. In order to accurately sort coal and gangue, the density of heavy suspension needs to be kept stable. Heavy suspension density control usually includes qualified medium barrel and concentrated medium barrel.
[0003] At present, when the existing heavy medium density control device of a coal preparation plant is in use, when the liquid level of the qualified medium barrel is too high, this will cause the heavy medium to overflow, increase the loss of the medium, and cause the density adjustment to lag, making it difficult to reduce the density of the suspension. When the liquid level of the qualified medium barrel is too low, more high-concentration medium needs to be added to supplement it, resulting in frequent adjustments, which increases the complexity and difficulty of control. Therefore, the present application provides a heavy medium density control device for a coal preparation plant to meet the needs. Utility Model Content
[0004] The technical problem to be solved by the utility model is to provide a heavy medium density control device for a coal preparation plant to solve the problem that the liquid level of the existing qualified medium barrel is too high or too low.
[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:
[0006] A heavy medium density control device for a coal preparation plant comprises: a rotating plate; a qualified medium barrel, arranged on the top of the rotating plate, for storing heavy medium with qualified density; a concentrated medium barrel, arranged on the top of the rotating plate, for storing heavy medium with high concentration; a water pump, arranged on the rotating plate, for pumping in and out heavy medium; a differentiation box, arranged on the rotating plate, the inner cavity of the differentiation box being divided into two cavities by a partition, for respectively storing heavy medium with different densities; three U-shaped tubes, connectedly arranged on the differentiation box, and the three U-shaped tubes cannot be located on the same side, and the surfaces of the three U-shaped tubes are connectedly provided with a connecting tube for pumping out or pumping in liquid; a diverter valve, arranged on the U-shaped tube, for diverting liquid.
[0007] The surfaces of the qualified medium barrel and the concentrated medium barrel are both provided with communication ports, the communication port of the concentrated medium barrel is connected to the suction end of the water pump, the communication port of the qualified medium barrel is connected to one of the connecting pipes, and the discharge end of the water pump is connected to the other connecting pipe.
[0008] It also includes: two density meters, which are respectively arranged in the two cavities of the differentiation box and are used to monitor the density of the heavy medium in the two cavities.
[0009] It also includes: a workbench, which is rotatably arranged at the bottom of the rotating plate and is used to support the rotating plate; it also includes: a servo motor, which is arranged in the workbench, and the output end of the servo motor is connected to the rotating plate to provide a power source for the rotation of the rotating plate; it also includes: a placement groove, which is arranged on the top of the workbench and is used to place the servo motor.
[0010] It also includes: a control panel, which is arranged on the workbench and is used to control density adjustment.
[0011] The inner cavity of the qualified medium barrel and the inner cavity of the concentrated medium barrel are both provided with a density sensor and a liquid level sensor.
[0012] It also includes: two grooves, which are arranged on the top of the rotating plate, and the two grooves are matched with the outer diameter of the qualified medium barrel and the outer diameter of the concentrated medium barrel respectively, and are used to fix the qualified medium barrel and the concentrated medium barrel.
[0013] It also includes: a stirring part, which is arranged on the workbench and is used to prevent the heavy medium from settling.
[0014] The stirring part includes: an electric telescopic column, which is arranged on the workbench and is used to provide lifting movement; a support plate, which is arranged on the electric telescopic column and is used to provide a placement position for the stirring equipment; a stepper motor, which is arranged on the top of the support plate and is used to provide a power source for stirring the heavy medium; and a stirring rod, which is arranged at the bottom of the support plate and is used to stir the heavy medium.
[0015] The output end of the stepper motor passes through the support plate and is connected to the stirring rod.
[0016] Compared with the prior art, the utility model has at least the following beneficial effects:
[0017] In the above scheme, by setting the coordination of the diverter valve and the U-tube, the liquid level in the qualified medium barrel is ensured to be maintained at the set height to avoid the liquid level being too high or too low. At the same time, the density can be adjusted with the cooperation of the differentiation box to ensure that the purpose of sorting and purifying the coal is achieved. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the description, further serve to explain the principles of the present disclosure and to enable those skilled in the relevant art to make and use the present disclosure.
[0019] Figure 1 This is a three-dimensional structural diagram of a heavy medium density control device in a coal preparation plant;
[0020] Figure 2 It is a schematic diagram of the placement slot structure;
[0021] Figure 3 To distinguish the top view of the box structure;
[0022] Figure 4 It is a schematic diagram of the structure of the density meter;
[0023] Figure 5 It is a cross-sectional view of the qualified medium barrel structure;
[0024] Figure 6 Schematic diagram of the groove structure.
[0025] [Reference Signs]
[0026] 1. Workbench; 2. Stirring part; 3. Qualified medium barrel; 4. Concentrated medium barrel; 5. Water pump; 6. Turntable; 7. Control panel; 8. Differentiation box; 9. Servo motor; 10. Placement slot; 11. Diverter valve; 12. U-shaped tube; 13. Densitometer; 14. Groove; 21. Electric telescopic column; 22. Support plate; 23. Stepper motor; 24. Stirring rod.
[0027] As shown in the figure, in order to clearly implement the structure of the embodiment of the utility model, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the utility model to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments, and the adjustments or modifications made are still included in the scope of the attached claims. DETAILED DESCRIPTION
[0028] The following is a detailed description of a coal preparation plant heavy medium density control device provided by the utility model in combination with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art may also adopt other alternative methods to implement some known technologies; and the accompanying drawings are only for a more specific description of the embodiments, and are not intended to specifically limit the utility model.
[0029] like Figure 1 and Figure 3As shown, an embodiment of the utility model provides a heavy medium density control device for a coal preparation plant, comprising: a rotating plate 6; a qualified medium barrel 3, arranged on the top of the rotating plate 6, for storing heavy media with qualified density; a concentrated medium barrel 4, arranged on the top of the rotating plate 6, for storing heavy media with high concentration; a water pump 5, arranged on the rotating plate 6, for pumping in and out heavy media; a distinction box 8, arranged on the rotating plate 6, the inner cavity of the distinction box 8 is divided into two cavities by a partition, for respectively storing heavy media with different densities; three U-shaped tubes 12, connected and arranged on the distinction box 8, and the three U-shaped tubes 12 cannot be located on the same side, and the surfaces of the three U-shaped tubes 12 are connected and provided with a connecting tube for pumping out or pumping in liquid; a diverter valve 11, arranged on the U-shaped tube 12, for diverting liquid.
[0030] By setting connecting pipes, the number of connecting pipes is three, and the connecting pipes are divided into a first connecting pipe, a second connecting pipe and a third connecting pipe, which are respectively connected to three U-shaped pipes 12, wherein the third connecting pipe can be connected to an external water pipe to facilitate water transportation, the first connecting pipe is connected to the qualified medium barrel 3, and the second connecting pipe is connected to the water pump 5; by setting the diverter valve 11, the U-shaped pipe 12 can be diverted, the excess liquid in the qualified medium barrel 3 can be extracted, and the high-concentration medium can be supplemented when the liquid level of the qualified medium barrel 3 is too low; by setting the U-shaped pipe 12, different media can be transported respectively and transported to different positions to avoid medium contamination and the phenomenon that the medium cannot be used.
[0031] When the density of the qualified medium barrel 3 is too low, the concentrated medium in the concentrated medium barrel 4 is transported to the second cavity through the water pump 5 and the second connecting pipe, and its density is detected by the densitometer 13. The water source is input into the second cavity through the third connecting pipe to make the medium reach a suitable density, and then it is transported to the qualified medium barrel 3 through the first connecting pipe, so that the density of the qualified medium barrel 3 reaches the set value; when the density of the qualified medium barrel 3 is too high, the medium in the qualified medium barrel 3 is input into the second cavity through the first connecting pipe, and the water source is input through the third connecting pipe to neutralize and reduce it, and then the reduced medium is input into the qualified medium barrel 3, so that it reaches the set value.
[0032] like Figure 1 and Figure 3 As shown, the surfaces of the qualified medium barrel 3 and the concentrated medium barrel 4 are both provided with connecting ports, the connecting port of the concentrated medium barrel 4 is connected to the suction end of the water pump 5, the connecting port of the qualified medium barrel 3 is connected to one of the connecting pipes, and the discharge end of the water pump 5 is connected to the other connecting pipe.
[0033] By setting up the water pump 5, the heavy medium in the qualified medium barrel 3 and the concentrated medium barrel 4 can be pumped out and in, which serves as a power source. At the same time, the concentrated medium in the concentrated medium barrel 4 is output to the qualified medium barrel 3 to avoid affecting its subsequent use due to too low density.
[0034] like Figure 4 As shown, it also includes: two densitometers 13, which are respectively arranged in the two cavities of the differentiation box 8 and are used to monitor the density of the heavy medium in the two cavities.
[0035] By setting up the distinction box 8, the heavy medium can be temporarily stored and divided into two chambers including a first chamber and a second chamber. The first chamber is used to store excess liquid in the qualified medium barrel 3, and the second chamber is used to first place the concentrated medium in the concentrated medium barrel 4, and then adjust its density through an external water source to reach the required density of the qualified medium barrel 3, and then transport it to the qualified medium barrel 3; by setting up a densitometer 13, the media in the two chambers can be monitored in real time, so as to adjust their density.
[0036] like Figure 1 and Figure 2 As shown, it also includes: a workbench 1, which is rotatably arranged at the bottom of the rotating plate 6 and is used to support the rotating plate 6; it also includes: a servo motor 9, which is arranged in the workbench 1, and the output end of the servo motor 9 is connected to the rotating plate 6 to provide a power source for the rotation of the rotating plate 6; it also includes: a placement groove 10, which is arranged on the top of the workbench 1 and is used to place the servo motor 9.
[0037] By setting a servo motor 9, the output end of the servo motor 9 is connected to the rotating plate 6, which is controlled by an external current to drive the servo motor 9 to rotate, so that the rotating plate 6 moves synchronously, and the qualified medium barrel 3 and the concentrated medium barrel 4 rotate, so as to facilitate subsequent stirring operations and prevent sedimentation; universal wheels are provided at the four corners of the bottom of the workbench 1, which are made of metal material and can support the workbench 1, while facilitating the movement of the equipment and facilitating transportation.
[0038] like Figure 1 As shown, it also includes: a control panel 7, which is arranged on the workbench 1 and is used to control density adjustment.
[0039] By setting up the control panel 7, personnel can input the required data into the control panel 7 in advance, and then operate other devices through the control panel 7 for use. There is no need for personnel to monitor all the time, which reduces the workload of personnel and thus achieves automation.
[0040] like Figure 5 As shown, the inner cavity of the qualified medium barrel 3 and the inner cavity of the concentrated medium barrel 4 are both provided with a density sensor and a liquid level sensor.
[0041] By setting a liquid level sensor, the qualified medium barrel 3 and the concentrated medium barrel 4 can be monitored at all times to prevent the qualified medium barrel 3 from having too high or too low liquid, thereby affecting its subsequent operation. At the same time, the personnel can be reminded to replenish the concentrated medium barrel 4 in time when the liquid level drops; by setting a density sensor, the density of the qualified medium barrel 3 and the concentrated medium barrel 4 can be monitored at all times to prevent it from being lower than the set value.
[0042] like Figure 1 and Figure 6 As shown, it also includes: two grooves 14, which are arranged on the top of the rotating plate 6, and the two grooves 14 match the outer diameters of the qualified medium barrel 3 and the outer diameters of the concentrated medium barrel 4 respectively, and are used to fix the qualified medium barrel 3 and the concentrated medium barrel 4.
[0043] By providing the groove 14, the qualified medium barrel 3 and the concentrated medium barrel 4 can be placed and fixed to prevent them from shaking due to external factors during use, thereby causing the heavy medium to overflow and pollute the working scene.
[0044] like Figure 1 As shown, it also includes: a stirring part 2, which is arranged on the workbench 1 and is used to prevent the heavy medium from settling.
[0045] By providing the stirring part 2, the qualified medium barrel 3 and the concentrated medium barrel 4 can be stirred to avoid sedimentation of the medium in the qualified medium barrel 3 and the concentrated medium barrel 4 during long-term use, thereby affecting subsequent use.
[0046] like Figure 1 As shown, the stirring part 2 includes: an electric telescopic column 21, which is arranged on the workbench 1 and is used to provide lifting movement; a support plate 22, which is arranged on the electric telescopic column 21 and is used to provide a placement position for the stirring equipment; a stepper motor 23, which is arranged on the top of the support plate 22 and is used to provide a power source for stirring the heavy medium; a stirring rod 24, which is arranged at the bottom of the support plate 22 and is used to stir the heavy medium.
[0047] By providing a stepper motor 23, the output end of the stepper motor 23 is connected to the stirring rod 24, and the stepper motor 23 rotates under the influence of an external current, thereby driving the stirring rod 24 to move synchronously, thereby realizing the stirring function.
[0048] like Figure 1 As shown, the output end of the stepper motor 23 passes through the support plate 22 and is connected to the stirring rod 24 .
[0049] By providing the stirring rod 24, the stirring rod 24 is made of AS plastic, stainless steel, glass, etc., which is corrosion-resistant and can avoid being corroded during the stirring process.
[0050] The technical solution provided by the utility model is that when the liquid level of the heavy suspension in the qualified medium barrel 3 is monitored by the liquid level sensor to be too high, the water pump 5 and the diverter valve 11 are turned on by the control panel 7 to pump the heavy suspension in the qualified medium barrel 3 into the first cavity in the distinguishing box 8 through the first connecting pipe until the heavy suspension in the qualified medium barrel 3 reaches the set height; when the liquid level of the heavy suspension in the qualified medium barrel 3 is monitored by the liquid level sensor to be too low, the water pump 5 and the diverter valve 11 are turned on by the control panel 7 to pump the heavy suspension in the concentrated medium barrel 4 into the second cavity in the distinguishing box 8 through the second connecting pipe, and then the external water source is transported to the distinguishing box 8 through the third connecting pipe. It is delivered to the second cavity so that the density in the second cavity is equal to the density of the qualified medium barrel 3. With the cooperation of the first connecting pipe, it is delivered to the qualified medium barrel 3 until the heavy suspension in the qualified medium barrel 3 reaches the set height. When the qualified medium barrel 3 or the concentrated medium barrel 4 precipitates, the servo motor 9 is turned on by the control panel 7 to move the qualified medium barrel 3 or the concentrated medium barrel 4 under the stirring part 2. The stepper motor 23 and the electric telescopic column 21 are turned on by the control panel 7. The electric telescopic column 21 is retracted downward until the stirring rod 24 is located in the barrel. The stirring rod 24 is driven to rotate by the stepper motor 23 to avoid precipitation.
[0051] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the above preferred embodiments of the present invention, and those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.
[0052] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.
Claims
1. A heavy medium density control device for a coal preparation plant, characterized in that: include: Turn plate (6); A qualified medium barrel (3), arranged on the top of the rotating plate (6), and used for storing heavy medium with a qualified density; A concentrated medium barrel (4), arranged on the top of the rotating plate (6) and used for storing high-concentration heavy medium; A water pump (5) is arranged on the rotating plate (6) and is used to pump in and out the heavy medium; A differentiation box (8) is arranged on the rotating plate (6), wherein the inner cavity of the differentiation box (8) is divided into two cavities by a partition plate, and is used to store heavy media with different densities respectively; Three U-shaped tubes (12) are connected and arranged on the differentiation box (8), and the three U-shaped tubes (12) cannot be located on the same side. The surfaces of the three U-shaped tubes (12) are connected and provided with connecting tubes for extracting or pumping in liquid; The diverter valve (11) is arranged on the U-shaped tube (12) and is used for diverting liquid.
2. The heavy medium density control device of a coal preparation plant according to claim 1, characterized in that: The surfaces of the qualified medium barrel (3) and the concentrated medium barrel (4) are both provided with communication ports, the communication port of the concentrated medium barrel (4) is connected to the suction end of the water pump (5), the communication port of the qualified medium barrel (3) is connected to one of the connecting pipes, and the discharge end of the water pump (5) is connected to the other connecting pipe.
3. The heavy medium density control device of a coal preparation plant according to claim 1, characterized in that: Also includes: Two densitometers (13) are respectively arranged in two cavities of the differentiation box (8) and are used to monitor the density of the heavy medium in the two cavities.
4. The heavy medium density control device of a coal preparation plant according to claim 1, characterized in that: Also includes: A workbench (1) is rotatably arranged at the bottom of the rotating plate (6) and is used to support the rotating plate (6); it also includes: a servo motor (9) arranged in the workbench (1), and the output end of the servo motor (9) is connected to the rotating plate (6) to provide a power source for the rotation of the rotating plate (6); it also includes: a placement groove (10) arranged at the top of the workbench (1) and is used to place the servo motor (9).
5. The heavy medium density control device of a coal preparation plant according to claim 4, characterized in that: Also includes: A control panel (7) is arranged on the workbench (1) and is used to control density adjustment.
6. The heavy medium density control device of a coal preparation plant according to claim 1, characterized in that: The inner cavity of the qualified medium barrel (3) and the inner cavity of the concentrated medium barrel (4) are both provided with a density sensor and a liquid level sensor.
7. The heavy medium density control device of a coal preparation plant according to claim 1, characterized in that: Also includes: Two grooves (14) are provided on the top of the rotating plate (6), and the two grooves (14) respectively match the outer diameter of the qualified medium barrel (3) and the outer diameter of the concentrated medium barrel (4), and are used to fix the qualified medium barrel (3) and the concentrated medium barrel (4).
8. The heavy medium density control device of a coal preparation plant according to claim 4, characterized in that: Also includes: The stirring part (2) is arranged on the workbench (1) and is used to prevent the heavy medium from settling.
9. The heavy medium density control device of a coal preparation plant according to claim 8, characterized in that: The stirring part (2) comprises: An electric telescopic column (21), arranged on the workbench (1) and used to provide lifting movement; A support plate (22) is arranged on the electric telescopic column (21) and is used to provide a location for placing a stirring device; A stepping motor (23), arranged on the top of the support plate (22), and used to provide a power source for stirring the heavy medium; A stirring rod (24) is arranged at the bottom of the support plate (22) and is used to stir the heavy medium.
10. The heavy medium density control device of a coal preparation plant according to claim 9, characterized in that: The output end of the stepper motor (23) passes through the support plate (22) and is connected to the stirring rod (24).