CN213349262U - Dense medium density monitoring system - Google Patents
Dense medium density monitoring system Download PDFInfo
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- CN213349262U CN213349262U CN202021821316.4U CN202021821316U CN213349262U CN 213349262 U CN213349262 U CN 213349262U CN 202021821316 U CN202021821316 U CN 202021821316U CN 213349262 U CN213349262 U CN 213349262U
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Abstract
The application discloses dense medium density monitoring system, it includes: box, filter screen, first baffle and densimeter, first baffle becomes left box and right box with the box interval, be provided with the detection bin outlet in the box of a left side, be provided with main discharge gate in the box of the right side, the dense medium overflows right box by left box, the densimeter has first feed inlet and first discharge gate, first feed inlet is connected with the detection bin outlet, be provided with main discharge gate on the main discharge gate, the first discharge gate and the main discharge union coupling of densimeter, the filter screen sets up on the detection bin outlet. Utilize this application not only can avoid the densimeter to block up, guarantee the normal work of densimeter, but also can avoid the wearing and tearing of large granule material to densimeter pressure sensing diaphragm, the life of extension densimeter reduces the monitoring cost, simple structure simultaneously, convenient to use.
Description
Technical Field
The application relates to the technical field of mineral processing, in particular to a dense medium density monitoring system.
Background
Media having a density greater than water are generally referred to as dense media. Coal separation in dense media is referred to as dense media coal separation. At present, most coal preparation plants in China adopt a dense medium coal preparation process. The heavy medium used for coal dressing is a suspension liquid consisting of magnetite, coal slime and water, and is also called qualified medium. Generally speaking, the higher the magnetite content, the smaller the coal slurry content, and the higher the relative density of the dense media. The relative density of the heavy media used in coal preparation plants is generally between 1.3 and 1.8g/cm3In the meantime. Raw coal is a mixture containing clean coal and gangue. In the raw coal density composition, the raw coal is generally divided into three parts, and the relative density is less than 1.4g/cm3The ash content of the low-density-level material is low; the relative density is between 1.4 and 1.8g/cm3Medium density grade materials, ash content, etc.; the relative density is more than 1.8g/cm3The ash content of the high-density material is high. The clean coal product requires low ash content and mainly consists of low-density-level materials and partial medium-density-level materials. The gangue is required to have higher ash content and mainly consists of high-density-level materials and part of medium-density-level materials. During separation, the material with low density of the specific gravity medium suspension liquid floats upwards to form a clean coal product, and the material with high density of the specific gravity medium suspension liquid settles downwards to form a gangue product. The density of the dense medium suspension thus determines the ash content of the clean coal. In actual production, operators can make use of the density composition of raw coal and the ash of clean coalThe density of the dense medium suspension is set according to the requirement, and an online densitometer is adopted to measure the qualified medium. If the on-line densimeter shows that the numerical value is larger than the designed density, water needs to be added into the qualified medium; if the value displayed by the on-line densimeter is smaller than the designed density, the water and the coal slime in the qualified medium need to be separated out of the qualified medium system or the content of the magnetic powder needs to be increased in the qualified medium until the value displayed by the on-line densimeter is consistent with the value set by the operator.
Currently, densitometers for on-line measurement of qualified media are mainly differential densitometers, which are instruments for measuring the density of qualified media by using different pressures of the qualified media at different heights. When the height difference is constant, the greater the pressure difference of the qualified media at different heights is, the greater the density of the qualified media is. In order to realize online real-time density monitoring, the differential densitometer needs to be installed on the pipeline of the sorting equipment for passing in and out the qualified medium, and the qualified medium is required to fill the pipeline of the differential densitometer. As shown in FIG. 1, the differential densitometer 1 ' is mounted on a gravity line 2 ', and the gravity lines 2 ' on both sides of the differential densitometer 1 ' are communicated by a bypass line 3 '. Wherein, the gravity pipeline is a pipeline which adopts the gravity to convey qualified media. In order to realize that the pipeline of the differential densimeter is filled with qualified medium, the size of the inlet of the differential densimeter is larger than that of the outlet. When the qualified medium contains large coal blocks, the outlet of the differential densimeter is often blocked, so that the differential densimeter cannot work normally.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present application provides a dense medium density monitoring system to solve the above technical problems.
The application provides a dense medium density monitoring system, it includes: box, filter screen, first baffle and densimeter, first baffle becomes left box and right box with the box interval, be provided with the detection bin outlet in the box of a left side, be provided with main discharge gate in the box of the right side, the dense medium overflows right box by left box, the densimeter has first feed inlet and first discharge gate, first feed inlet is connected with the detection bin outlet, be provided with main discharge gate on the main discharge gate, the first discharge gate and the main discharge union coupling of densimeter, the filter screen sets up on the detection bin outlet.
Optionally, the method further comprises: the roof to and be located inside second baffle and the third baffle of left box, the roof lid is established on the box, the box has the relative bottom plate that sets up with the roof, be provided with the pan feeding mouth on the roof, the internal diameter of pan feeding mouth is greater than and detects the bin outlet internal diameter, it all sets up on the bottom plate to detect bin outlet and main bin outlet, and the third baffle divides box with left box interval two, the second baffle sets up on the box lateral wall, with the roof butt, first baffle and third baffle parallel arrangement on the bottom plate, all have the clearance between second baffle and bottom plate, first baffle and roof, third baffle and the roof, the both sides that the filter screen is relative respectively with bottom plate and first baffle fixed connection, the filter screen is located and detects the bin outlet top.
Optionally, the device further comprises a first U-shaped pipe, wherein the first U-shaped pipe is provided with a second feeding hole and a second discharging hole, the second feeding hole is connected with the detection discharging hole, and the second discharging hole is connected with the first feeding hole.
Optionally, the device further comprises a second U-shaped tube, the second U-shaped tube is provided with a third feeding port and a third discharging port, the first discharging port is connected with the third feeding port, the third discharging port is connected with the main discharging pipe, and the first feeding port is located below the first discharging port.
Optionally, the system further comprises an emptying pipe, and the emptying pipe is connected with the first U-shaped pipe and the main emptying pipe respectively.
Optionally, the first U-shaped pipe is provided with an inspection hole, the inspection hole and the emptying pipe are located on the pipe wall opposite to the first U-shaped pipe, and the blind plate seals the inspection hole.
Optionally, the exhaust pipe is further included, an exhaust hole is formed in the second U-shaped pipe, a first end of the exhaust pipe is installed on the exhaust hole, and a second end of the exhaust pipe penetrates through the bottom plate and the top plate in sequence and is located outside the box body.
Optionally, still include first standpipe to and second standpipe and the arc pipe that connects gradually, the detection bin outlet is connected with the second feed inlet through first standpipe, the third discharge gate is connected with the second standpipe, the arc pipe and main discharge union coupling.
Optionally, a plurality of rows of through holes are formed in one side, close to the bottom plate, of the third baffle plate, the plurality of rows of through holes are arranged in parallel along a direction parallel to the bottom plate, each row of through holes comprises a plurality of through holes, and each through hole penetrates through the thickness direction of the third baffle plate.
Optionally, an air outlet pipe for exhausting air is arranged on the top plate.
The application provides a dense medium density monitoring system is through setting up the box, the filter screen, first baffle and densimeter, box about first baffle becomes the box interval, discharge in the dense medium overflow to the right box in the left side box, dense medium gets into the densimeter after crossing and carries out density monitoring again, under the condition of being full of qualified medium in guaranteeing the densimeter, not only can avoid the densimeter to block up, guarantee the normal work of densimeter, but also can avoid the wearing and tearing of large granule material to densimeter pressure sensing diaphragm, prolong the life of densimeter, reduce the monitoring cost, simple structure simultaneously, high durability and convenient use.
Drawings
FIG. 1 is a schematic view of a prior art mounting structure for a densitometer.
Fig. 2 is a schematic structural diagram of a dense medium density monitoring system of the present application.
Fig. 3 is a cross-sectional view of the case of the present application.
Fig. 4 is a top view of the case of the present application.
Detailed Description
The technical solutions of the present application are described in detail below with reference to the accompanying drawings and specific embodiments. In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.
Fig. 2 shows a schematic structural view of the dense medium density monitoring system of the present application, fig. 3 shows a cross-sectional view of the tank of the present application, and fig. 4 shows a top view of the tank of the present application. As shown in fig. 2-4, the present application provides a dense medium density monitoring system, comprising: box 1, filter screen 105, first baffle 104 and densitometer 2. In the present embodiment, the densitometer 2 may employ an existing differential densitometer.
The first baffle 104 divides the box body 1 into a left box body and a right box body, and the dense medium in the left box body overflows into the right box body.
A detection discharge opening 106 is formed in the left box body, and a main discharge opening 107 is formed in the right box body.
The densimeter 2 has a first feed opening and a first discharge opening, and the first feed opening is connected with the detection discharge opening 106.
The main discharging hole 107 is provided with a main discharging pipe 3, the first discharging hole of the densimeter 2 is connected with the main discharging pipe 3, and the filter screen 105 is arranged on the detection discharging hole 106.
When the dense medium density monitoring system is used, qualified media are fed into the box body 1 through the feeding pipeline, enter the left box body firstly, and enter the densimeter 2 after being filtered by the filter screen to be subjected to density monitoring.
Along with the continuous injection of qualified medium, the left box body is full of qualified medium, overflows through the top of the first baffle plate 104, enters the right box body, and is discharged through the main discharge port 107 and the main discharge pipe 3.
The application provides a dense medium density monitoring system is through setting up the box, the filter screen, first baffle and densimeter, box about first baffle becomes the box interval, discharge in the dense medium overflow to the right box in the left side box, dense medium gets into the densimeter after crossing and carries out density monitoring again, under the condition of being full of qualified medium in guaranteeing the densimeter, not only can avoid the densimeter to block up, guarantee the normal work of densimeter, but also can avoid the wearing and tearing of large granule material to densimeter pressure sensing diaphragm, prolong the life of densimeter, reduce the monitoring cost, simple structure simultaneously, high durability and convenient use.
Further, the dense medium density monitoring system further comprises: a top plate, and a second baffle 102 and a third baffle 103 located inside the left box.
The roof lid is established on the box 1, box 1 has the bottom plate that sets up with the roof relatively, be provided with pan feeding mouth 101 on the roof, detect bin outlet 106 and main bin outlet 107 and all set up on the bottom plate. The inner diameter of the feeding opening 101 is larger than that of the detection discharging opening 106.
In order to facilitate pipeline connection, the material inlet 101, the detection discharge port 106 and the main discharge port 107 are all provided with connecting pipes, and the connecting pipes are provided with flanges.
The second baffle 102 is arranged on the side wall of the box body and is abutted against the top plate. The first baffle 104 and the third baffle 103 are arranged on the bottom plate in parallel, and the left box body is divided into two sub-box bodies by the third baffle.
Gaps are reserved between the second baffle plate 102 and the bottom plate, between the first baffle plate 104 and the top plate, and between the third baffle plate 103 and the top plate.
The two opposite sides of the filter screen 105 are fixedly connected with the bottom plate and the first baffle 104 respectively, and the filter screen 105 is located above the detection discharge opening 106.
Qualified medium gets into in the left box, blockking of second baffle 102 and third baffle 103, after the liquid level of qualified medium exceeded third baffle 103, unnecessary qualified medium can be followed the top overflow of third baffle 103 and got off to slow down the velocity of flow, form stable qualified medium, can guarantee the velocity of flow of the qualified medium that gets into in densimeter 2, improve the measurement accuracy of densimeter, make the density control of qualified medium more accurate, guarantee the stability of product ash content, improve the economic benefits of coal preparation factory.
Simultaneously, with filter screen 105 slope setting, can avoid large granule material to block up filter screen 105, guarantee filter screen 105's normal work. In one embodiment, the screen 105 may be a grate.
In one embodiment, as shown in FIG. 2, the box body 1 is a rectangular parallelepiped, and the first baffle 104, the second baffle 102 and the third baffle 103 are welded inside the box body 1.
The second baffle plate 102 is perpendicular to the side wall and the bottom plate of the box 1, and the first baffle plate 104 and the third baffle plate 103 are both perpendicular to the bottom plate.
Further, dense medium density monitoring system still includes first U type pipe 4, first U type pipe 4 has second feed inlet and second discharge gate, and the second feed inlet is connected with detection bin outlet 106, and the second discharge gate is connected with first feed inlet, and first feed inlet is located first discharge gate below.
Through setting up first U type pipe 4, not only can guarantee being full of qualified medium in the densimeter 2, still can reduce the velocity of flow of qualified medium, further guarantee that the qualified medium velocity of flow in the densimeter 2 is even stable, reduce the wearing and tearing to 2 each parts of densimeter, prolong the life of densimeter 2.
Preferably, the dense medium density monitoring system further comprises a second U-shaped pipe 5, the second U-shaped pipe 5 is provided with a third feeding port and a third discharging port, the first discharging port is connected with the third feeding port, and the third discharging port is connected with the main discharging pipe 3 so as to be conveniently connected with the main discharging pipe 3.
Further, the dense medium density monitoring system further comprises an emptying pipe 6, and the emptying pipe 6 is connected with the first U-shaped pipe 4 and the main emptying pipe 3 respectively.
When the dense medium density monitoring system stops working, the emptying pipe 6 can timely discharge qualified media remained in the box body 1 and the density monitoring pipeline, and the pipeline is prevented from being damaged.
Further, the dense medium density monitoring system further comprises a blind plate, an inspection hole 7 is formed in the first U-shaped pipe 4, the inspection hole 7 and the emptying pipe 6 are located on the pipe wall opposite to the first U-shaped pipe 4, and the blind plate seals the inspection hole 7.
As shown in fig. 2, a flange is arranged on the detection hole 7, and the blind plate is fixedly connected with the flange through a bolt. Through setting up inspection hole 7, can make things convenient for the maintenance to evacuation pipe 6.
Optionally, the dense medium density monitoring system further includes an exhaust pipe 12, an exhaust hole is formed in the second U-shaped pipe 5, a first end of the exhaust pipe 12 is installed on the exhaust hole, and a second end of the exhaust pipe sequentially penetrates through the bottom plate and the top plate and is located outside the box body 1.
By arranging the exhaust pipe 12, gas in the pipeline can be exhausted, so that the pipeline on two sides of the densimeter 2 is filled with qualified medium, and the measurement precision is improved.
As shown in FIG. 2, the emptying pipe 6 is connected to the middle position of the first U-shaped pipe 4 and is positioned at the lowest point of the first U-shaped pipe 4, so that the material can be discharged conveniently.
The exhaust pipe 12 is arranged in the middle of the second U-shaped pipe 5 and is positioned at the highest point of the second U-shaped pipe 5, so that the exhaust is convenient.
Further, the dense medium density monitoring system further comprises a first vertical pipe 8, and the detection discharge port 106 is connected with the second feed port through the first vertical pipe 8 so as to facilitate the installation of the first U-shaped pipe 4.
Preferably, the dense medium density monitoring system further comprises a second vertical pipe 9 and an arc-shaped pipe 10 which are connected in sequence, the third discharge port is connected with the second vertical pipe 9, and the arc-shaped pipe 10 is connected with the main discharging pipe 3, so that the second U-shaped pipe 5 is conveniently connected with the main discharging pipe 3.
Preferably, a plurality of rows of through holes are formed in one side of the third baffle plate 103 close to the bottom plate, the plurality of rows of through holes are arranged in parallel along a direction parallel to the bottom plate, each row of through holes comprises a plurality of through holes, and each through hole penetrates through the thickness direction of the third baffle plate 103.
Through set up multirow through-hole in the bottom of third baffle 103, can prevent that the material in the qualified medium from being close to the bottom deposit of pan feeding one side at third baffle 103, guaranteeing the mobility of qualified medium.
Optionally, be provided with on the roof and be used for carminative outlet duct 13, can in time discharge the unnecessary gas in the box 1, guarantee the stability of liquid level in the box 1, provide the guarantee for density detection.
The technical solutions of the present application are described in detail with reference to specific embodiments, which are used to help understand the ideas of the present application. The derivation and modification made by the person skilled in the art on the basis of the specific embodiment of the present application also belong to the protection scope of the present application.
Claims (10)
1. A dense medium density monitoring system, comprising: box, filter screen, first baffle and densimeter, first baffle becomes left box and right box with the box interval, be provided with the detection bin outlet in the box of a left side, be provided with main discharge gate in the box of the right side, the dense medium overflows right box by left box, the densimeter has first feed inlet and first discharge gate, first feed inlet is connected with the detection bin outlet, be provided with main discharge gate on the main discharge gate, the first discharge gate and the main discharge union coupling of densimeter, the filter screen sets up on the detection bin outlet.
2. The dense media density monitoring system of claim 1, further comprising: the roof to and be located inside second baffle and the third baffle of left box, the roof lid is established on the box, the box has the relative bottom plate that sets up with the roof, be provided with the pan feeding mouth on the roof, it all sets up on the bottom plate to detect bin outlet and main bin outlet, and the internal diameter of pan feeding mouth is greater than and detects the bin outlet internal diameter, and the third baffle divides into two branch boxes with left box interval, the second baffle sets up on the box lateral wall, with the roof butt, first baffle and third baffle parallel arrangement on the bottom plate, all have the clearance between second baffle and bottom plate, first baffle and roof, third baffle and the roof, the both sides that the filter screen is relative respectively with bottom plate and first baffle fixed connection, the filter screen is located and detects the bin outlet top.
3. The dense medium density monitoring system according to claim 2, further comprising a first U-shaped tube having a second inlet and a second outlet, the second inlet being connected to the detection discharge port, the second outlet being connected to the first inlet.
4. The dense medium density monitoring system according to claim 3, further comprising a second U-shaped pipe having a third feed port and a third discharge port, wherein the first discharge port is connected to the third feed port, the third discharge port is connected to the main discharge pipe, and the first feed port is located below the first discharge port.
5. The dense medium density monitoring system according to claim 4, further comprising an evacuation pipe connected to the first U-shaped pipe and the main evacuation pipe, respectively.
6. The dense medium density monitoring system as claimed in claim 5, further comprising a blind plate, wherein the first U-shaped pipe is provided with an inspection hole, the inspection hole and the emptying pipe are positioned on the pipe wall opposite to the first U-shaped pipe, and the blind plate seals the inspection hole.
7. The dense medium density monitoring system of claim 6, further comprising an exhaust pipe, wherein the second U-shaped pipe is provided with an exhaust hole, a first end of the exhaust pipe is installed on the exhaust hole, and a second end of the exhaust pipe sequentially penetrates through the bottom plate and the top plate and is located outside the box body.
8. The dense medium density monitoring system according to claim 7, further comprising a first vertical pipe, and a second vertical pipe and an arc pipe connected in sequence, wherein the detection discharge port is connected with the second feed port through the first vertical pipe, the third discharge port is connected with the second vertical pipe, and the arc pipe is connected with the main discharge pipe.
9. The dense media density monitoring system of claim 8, wherein the third baffle has a plurality of rows of through holes formed on a side thereof adjacent to the bottom plate, the plurality of rows of through holes being arranged in parallel in a direction parallel to the bottom plate, each row of through holes including a plurality of through holes, each of the through holes penetrating through the third baffle in a thickness direction thereof.
10. The dense media density monitoring system of any one of claims 2-9, wherein the top plate is provided with an outlet for exhaust.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021821316.4U CN213349262U (en) | 2020-08-27 | 2020-08-27 | Dense medium density monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021821316.4U CN213349262U (en) | 2020-08-27 | 2020-08-27 | Dense medium density monitoring system |
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| Publication Number | Publication Date |
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| CN213349262U true CN213349262U (en) | 2021-06-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021821316.4U Active CN213349262U (en) | 2020-08-27 | 2020-08-27 | Dense medium density monitoring system |
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| CN (1) | CN213349262U (en) |
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- 2020-08-27 CN CN202021821316.4U patent/CN213349262U/en active Active
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