CN213494229U - Coal pulverizer with prevent stifled inlet pipe chute - Google Patents
Coal pulverizer with prevent stifled inlet pipe chute Download PDFInfo
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- CN213494229U CN213494229U CN202022069888.8U CN202022069888U CN213494229U CN 213494229 U CN213494229 U CN 213494229U CN 202022069888 U CN202022069888 U CN 202022069888U CN 213494229 U CN213494229 U CN 213494229U
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Abstract
The utility model relates to a coal pulverizer with prevent stifled inlet pipe chute, include, body, inlet pipe chute, feedway, first pipeline, second pipeline. The body is used for crushing materials; one end of the feeding pipe chute is provided with an opening for receiving water and materials, and the other end of the feeding pipe chute is used for conveying the water and the materials to the body; the feeding pipe chute is provided with a flushing port for receiving flushing water and flushing materials; the feeding device is positioned at the opening end of the feeding pipe chute and used for conveying materials to the feeding pipe chute; the first pipeline is positioned at the opening end of the feeding pipe chute and used for conveying water to the feeding pipe chute; the second pipeline is connected with the flushing port and used for conveying flushing water to the flushing port. The second pipeline and the flushing port solve the problem of blockage of a feeding pipe chute; the weighing device measures the weight of raw coal and transmits the weight to the controller, the controller calculates the water quantity according to the water-coal ratio, the water flow of the electric valve is limited, and the coal grinding water ratio is ensured; the infrared measuring instrument monitors the deposit, controls the second electric valve in real time and quickly removes blockage.
Description
Technical Field
The present invention relates generally to the field of machinery, and more particularly, to a coal pulverizer with an anti-clogging inlet pipe chute.
Background
The coal mill feeding pipe chute is mainly used for simultaneously conveying raw coal, coal grinding water and other auxiliary materials, such as a coal water slurry additive, limestone and the like, to important equipment in a coal grinding machine barrel. The inlet pipe chute has inclination, and the upper end opening is connected with equipment such as coal batcher of weighing, coal grinding water pipeline, coal slurry interpolation machine, lime stone interpolation machine simultaneously, and the lower extreme opening is connected to in the body.
When the existing dead weight type chute is used for feeding, firstly, coal, water, auxiliary materials and the like are mixed to form mixed materials, and the mixed materials slide into a coal grinding machine barrel from an opening at the upper end of the chute by utilizing the dead weight of the mixed materials. Because the mixed material contains raw material coal, coal grinding water, a coal water slurry additive, limestone and the like, the mixed material has the physical characteristics of paste adhesion and the like, when the pipe wall channel of the chute is long, the top coal grinding water can only flush the top position of the chute, and in the sliding process of the mixed material in the chute, along with the friction between the mixed material and the pipe wall of the chute, the coal grinding water is gradually separated from other materials with larger viscosity, the coal grinding water preferentially slides downwards, and the rest materials with larger viscosity can adhere to the inner wall of the chute to cause accumulation. If the blockage can not be found in time, large-area blockage can be caused, at the moment, the blockage is cleared, equipment needs to be shut down, and the chute is cleared in a long time.
In order to solve the problems, the prior patent CN201020636090.0 discloses an anti-blocking chute, wherein a manganese steel plate is arranged on the chute impact surface of the anti-blocking chute, the manganese steel plate is arranged on the impact surface of the chute in an upper-part suspension mode, a vibrator is arranged on the easy-to-accumulate surface of the chute, and the inclination angle of the front surface and the rear surface of the chute is 67 degrees. Although the vibrator can clean the materials bonded with the dead corners, the overall vibration is not beneficial to the operation of the equipment, the chute is easy to damage, and the service life of the equipment is shortened; an additional vibrator is added, and the energy consumption is increased.
Therefore, how to solve the problem of blockage of the feeding pipe chute of the coal mill, the defects in the prior art can be overcome, and the problem to be solved is urgent.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems, the utility model provides a coal mill with an anti-blocking inlet pipe chute, which comprises a body 1, an inlet pipe chute 2, a feeding device 3, a first pipeline 4 and a second pipeline 5, wherein the body 1 is used for receiving materials conveyed by the inlet pipe chute 2 and crushing the materials; the feeding pipe chute 2 is formed by enclosing chute walls, is obliquely arranged, has an opening at one end and is used for receiving water and materials, and has an opening at the other end connected with the body 1 and used for conveying the water and the materials into the body 1; a flushing port is arranged on the lateral side of the chute wall of the feeding pipe chute 2 and used for receiving flushing water and flushing materials accumulated in the feeding pipe chute 2; the feeding device 3 is positioned at the open end of the feeding pipe chute 2 and is used for conveying materials to the feeding pipe chute 2; the first conduit 4 is located at the open end of the feed pipe chute 2 for delivering water to the feed pipe chute 2; the second pipe 5 is connected with the flushing port and is used for conveying flushing water to the flushing port.
According to an embodiment of the present invention, the coal mill further comprises a controller 6, the first pipeline 4 is provided with a first electric valve 41 and a first flow transmitter 42, the first electric valve 41 is used for controlling the opening and closing of the first pipeline 4 and the flow rate, and the first flow transmitter 42 is used for measuring the flow rate of water in the first pipeline 4; the second pipeline 5 is provided with a second electric valve 51 and a second flow transmitter 52, the second electric valve 51 is used for controlling the opening and closing of the second pipeline 5, and the second flow transmitter 52 is used for metering the water flow in the second pipeline 5; the feeding device 3 is provided with a weighing device which is used for measuring the weight of coal; the coal-water ratio required by the coal mill is preset in the controller 6; the controller 6 is electrically connected with the weighing device and is used for acquiring coal weight information measured by the weighing device and calculating the required water amount according to the coal weight information and the coal-water ratio; the controller 6 is electrically connected with the first electric valve 41, the first flow transmitter 42, the second electric valve 51 and the second flow transmitter 52 respectively, obtains the water flow information in the first pipeline 4 and the second pipeline 5, and adjusts the first electric valve 41 and the second electric valve 51 to make the sum of the water flows in the first pipeline 4 and the second pipeline 5 equal to the required water amount.
According to an embodiment of the present invention, the coal pulverizer further comprises an infrared measuring instrument 7, wherein the infrared measuring instrument 7 is installed on the top of the feeding pipe chute 2 and is used for detecting the height of the material piled in the feeding pipe chute 2; the controller 6 is electrically connected with the infrared measuring instrument 7 and is used for adjusting the second electric valve 51 according to the detection result of the infrared measuring instrument 7.
According to the utility model discloses an embodiment, install booster 53 on the second pipeline 5 for increase the interior rivers impact force of second pipeline 5.
According to an embodiment of the present invention, the angle of inclination of the inlet pipe chute is 60.5 °.
According to the utility model discloses an embodiment, it is a plurality of to wash mouthful and the installation of second pipeline 5, carries out the pertinence according to the different positions of piling up the material and washes.
In the utility model, the second pipeline and the flushing port are adopted, so that the problem of blockage of the feeding pipe chute caused by material accumulation is solved; the weight of the raw coal is measured by the weighing device and is transmitted to the controller, the controller receives the weight information of the raw coal and calculates the corresponding water quantity according to the water-coal ratio input in advance, so that the water flow of the first electric valve and the second electric valve is limited, and the correct proportion of the coal grinding water is ensured; the height of the material in the feeding pipe chute is measured by the infrared measuring instrument 7 and is transmitted to the controller, the opening and closing of the second electric valve and the size of the switch are controlled in real time, and blockage is rapidly eliminated.
Drawings
FIG. 1 is a schematic illustration of a coal pulverizer with an anti-clogging feed pipe chute;
FIG. 2 is a schematic illustration of a coal pulverizer with a controller anti-clogging feed pipe chute;
FIG. 3 is a schematic illustration of a coal pulverizer with an anti-clogging feed pipe chute with an infrared gauge;
figure 4 is a schematic illustration of a feed tube chute with multiple flush ports, a second conduit.
Detailed Description
The preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, wherein like reference numerals refer to like elements and techniques of the present invention so that advantages and features of the present invention may be more readily understood when implemented in a suitable environment. The following description is an embodiment of the present invention, and other embodiments related to the claims that are not explicitly described also fall within the scope of the claims.
FIG. 1 shows a schematic of a coal pulverizer with an anti-clogging feed pipe chute.
As shown in fig. 1, the coal mill with the anti-blocking feed pipe chute comprises a body 1, a feed pipe chute 2, a feeding device 3, a first pipeline 4 and a second pipeline 5, wherein the body 1 is used for receiving materials conveyed by the feed pipe chute 2 and crushing the materials; the feeding pipe chute 2 is formed by enclosing chute walls, is obliquely arranged, has an opening at one end and is used for receiving water and materials, and has an opening at the other end connected with the body 1 and used for conveying the water and the materials into the body 1; a flushing port is arranged on the lateral side of the chute wall of the feeding pipe chute 2 and used for receiving flushing water and flushing materials accumulated in the feeding pipe chute 2; the feeding device 3 is positioned at the open end of the feeding pipe chute 2 and is used for conveying materials to the feeding pipe chute 2; the first conduit 4 is located at the open end of the feed pipe chute 2 for delivering water to the feed pipe chute 2; the second pipe 5 is connected with the flushing port and is used for conveying flushing water to the flushing port.
The body 1 refers to the part of the coal mill except the feeding pipe chute 2, and comprises a bedplate base, a motor, a coupler, a speed reducer, a machine base, a deslagging box, a machine base sealing device, a transmission box and a scraper device, a grinding ring and a nozzle ring, a grinding roller device, a pressing frame device, a shaft comparing device, a machine shell, a pull rod loading device, a loading oil cylinder, a separator platform, a sealing air pipeline, a fire-fighting gas pipeline, a high-pressure oil pipeline system, a lubricating oil system connecting pipeline, a grinding roller sealing air pipe and a machine base platform, and is used for crushing coal materials.
The material refers to raw material coal, coal water slurry additive, limestone and other objects needing to be added into the coal mill.
The typical angle of inclination of the feed pipe is in the range of 60 ° to 65 °, for example, 60.5 °, which does not cause serious impact on the coal mill body 1 under the condition that the material can slide down smoothly.
The side of the chute wall of the feeding pipe chute 2 is a wall surface which is not contacted with materials, a washing opening is generally arranged on the surface facing downwards, the accumulated materials can be impacted positively, and the washing effect is most obvious.
The first pipeline 4 conveys coal grinding water, and the second pipeline 5 conveys washing water, but the same water source can be adopted, so that the concentration deviation caused by different water sources can be avoided when the coal-water ratio is mixed.
When the coal mill shown in fig. 1 is operated, the feeder 3 conveys the material to the feed pipe chute 2, the first pipe 4 conveys the water to the feed pipe chute 2, the material and the water slide into the body 1 through the feed pipe chute 2, and the body 1 operates to grind the object coming in through the feed pipe chute 2 into powder. Because the mixed material contains raw material coal, coal grinding water, a coal water slurry additive, limestone and the like, the mixed material has the physical characteristics of paste adhesion and the like, when the pipe wall channel of the chute is long, the top coal grinding water can only flush the top position of the chute, and in the sliding process of the mixed material in the chute, along with the friction between the mixed material and the pipe wall of the chute, the coal grinding water is gradually separated from other materials with larger viscosity, the coal grinding water preferentially slides downwards, and the rest materials with larger viscosity can adhere to the inner wall of the chute to cause accumulation. At this point, the second conduit 5 delivers water to the flushing port on the side of the chute wall of the feed tube chute 2, flushing the clogged material into the body 1.
The utility model discloses in, owing to adopted second pipeline 5 and washed the mouth, solved the material and piled up the problem that causes inlet pipe chute 2 to block up, need not shut down equipment, cost manpower, cost time and remove clearance inlet pipe chute 2, practiced thrift manpower, materials and financial resources greatly.
FIG. 2 shows a schematic of a coal pulverizer with a controller anti-clogging feed pipe chute.
As shown in fig. 2, the coal pulverizer with the controller for the anti-blocking feed pipe chute further comprises a controller 6, wherein the first pipeline 4 is provided with a first electric valve 41 and a first flow transmitter 42, the first electric valve 41 is used for controlling the opening and closing of the first pipeline 4 and the flow rate, and the first flow transmitter 42 is used for measuring the water flow rate in the first pipeline 4; the second pipeline 5 is provided with a second electric valve 51 and a second flow transmitter 52, the second electric valve 51 is used for controlling the opening and closing of the second pipeline 5, and the second flow transmitter 52 is used for metering the water flow in the second pipeline 5; the feeding device 3 is provided with a weighing device which is used for measuring the weight of coal; the coal-water ratio required by the coal mill is preset in the controller 6; the controller 6 is electrically connected with the weighing device and is used for acquiring coal weight information measured by the weighing device and calculating the required water amount according to the coal weight information and the coal-water ratio; the controller 6 is electrically connected with the first electric valve 41, the first flow transmitter 42, the second electric valve 51 and the second flow transmitter 52 respectively, obtains the water flow information in the first pipeline 4 and the second pipeline 5, and adjusts the first electric valve 41 and the second electric valve 51 to make the sum of the water flows in the first pipeline 4 and the second pipeline 5 equal to the required water amount.
The controller 6 is a PLC (programmable logic controller 6) control system, is a computer dedicated for industrial control, and is composed of a central processing unit, a memory, a power supply, a program input device, and an input/output circuit. PLC can set up the station quantity and the operating parameter of different grade type products to can the on-line monitoring operation process, the flexible operation is convenient, can realize starting and pause, automatic and manual mode switch etc..
The utility model discloses in, first electric valve 41, second electric valve 51 indicate that transmission mode is electronic valve, can adopt one of them such as electric butterfly valve, electric gate valve, electric ball valve, electric stop valve, electronic diaphragm valve, electric control valve, for example, adopt electric control valve, electric control valve is energy-conserving, only at the during operation just electric energy that consumes, the environmental protection does not have the carbon emission, and the installation is swift convenient, need not complicated pneumatic line and air pump workstation.
The utility model discloses in, first flow transducer 42, second flow transducer 52 refer to flow sensor and intelligent flow integrating instrument in the accurate measuring instrument of new generation high accuracy of an organic whole, high reliability, can adopt one of them such as ultrasonic flowmeter, turbine flowmeter, oval gear flowmeter, tubular metal resonator float flowmeter, for example, adopt turbine flowmeter, turbine flowmeter is the turbine flow sensor of the development of ultra-low power consumption monolithic microcomputer technique and shows the novel intelligent instrument of integrating the integrating of integrating, have the mechanism compactness, the reading is directly perceived clear, the reliability is high, do not receive external power source interference, anti thunderbolt, obvious advantage such as with low costs.
The utility model discloses in, the weighing device is the weight weighing utensil that is used for the large-scale object of industry or trade, mainly comprises bearing system, biography power conversion system and indication system triplex, can adopt one of them such as electronic scale, mechanical scale, electromechanical combination balance, for example, adopts the electronic scale, realizes remote operation, automated control, and digital display is directly perceived, reduces human error, and the degree of accuracy is high, resolution ratio is strong.
When the system shown in fig. 2 is operated, the weighing device measures the weight of raw coal and transmits the weight of the raw coal to the controller 6, the controller 6 receives the weight information of the raw coal and calculates the corresponding water amount according to the water-coal ratio input in advance, the first flow transmitter 42 and the second flow transmitter 52 transmit the water amount flowing through in real time to the controller 6, when the material accumulation is monitored, the controller 6 opens the second electric valve 51 and controls the water flow of the second electric valve 51 according to the material accumulation degree, the monitored material accumulation is large, the controller opens the second electric valve 51 to increase the water flow of the second pipeline 5, the water flow value transmitted back by the corresponding second flow transmitter 52 is increased, at the moment, the controller 6 adjusts the first electric valve 41, the water flow of the first pipeline 4 is decreased by opening the first electric valve 41 to ensure that the total water consumption is not changed, the proportion of the coal grinding water is ensured to be correct.
The utility model discloses in, owing to adopted controller 6, measure raw coal weight and send the controller to through weighing device, the controller receives raw coal weight information and calculates corresponding water yield according to the water coal ratio of inputing in advance to this prescribes a limit to first electric valve 41, second electric valve 51's discharge, and it is correct to have guaranteed the proportion of coal-grinding water, and the process is controlled by the computer, and the precision is high, practices thrift the manpower.
FIG. 3 shows a schematic of a coal pulverizer with an anti-clogging feed pipe chute with an infrared measurement instrument
As shown in fig. 3, the coal mill with the anti-blocking feed pipe chute provided with the infrared measuring instrument further comprises an infrared measuring instrument 7, wherein the infrared measuring instrument 7 is mounted at the top of the feed pipe chute 2 and is used for detecting the height of the materials stacked in the feed pipe chute 2; the controller 6 is electrically connected with the infrared measuring instrument 7 and is used for adjusting the second electric valve 51 according to the detection result of the infrared measuring instrument 7.
The utility model discloses in, install booster 53 on the second pipeline 5 for increase the interior rivers impact force of second pipeline 5.
When the system shown in fig. 3 operates, whether there is the material to pile up and with information transfer to controller 6 in the infrared measurement appearance 7 real time monitoring feed inlet chute, judge through detecting the interior material height of chute and pile up the degree, when the height that detects the material surpassed the default, controller 6 transmits information to second electric valve 51, second electric valve 51 opens, water in the second pipeline 5 is through washing the mouth, wash accumulational material, until infrared measurement appearance 7 detects that the material height reduces to being less than the default, transmit for controller 6, controller 6 controls second electric valve 51 again and closes.
The utility model discloses in, owing to adopted infrared measuring instrument 7, can real-time supervision inlet pipe chute 2 interior material pile up the degree and transmit for controller 6, when producing the material and pile up, second electric valve 51 is opened for second electric valve 51 transfer instruction to controller 6, washes piling up the material. The process is controlled by the computer, the material accumulation of the feeding pipe chute 2 is avoided, the machine does not need to be stopped to clean the material accumulation, the assembly is simple, the anti-blocking effect is obvious, and great benefits are brought to production.
Figure 4 shows a schematic view of a feed pipe chute with multiple flush ports, a second conduit.
As shown in fig. 4, a feed pipe chute 2 includes a plurality of flushing ports and a second pipe 5 for targeted flushing according to different locations of the deposited material.
The utility model discloses in, owing to adopted a plurality of mouths and second pipeline 5 of washing, can measure the accumulational position of material according to infrared measuring instrument 7, open corresponding position's second electric valve, carry out the high accuracy to accumulational material and wash, improved the efficiency of washing, reduced the waste of sparge water.
In the utility model, the second pipeline and the flushing port are adopted, so that the problem of blockage of the feeding pipe chute caused by material accumulation is solved; the weight of the raw coal is measured by the weighing device and is transmitted to the controller, the controller receives the weight information of the raw coal and calculates the corresponding water quantity according to the water-coal ratio input in advance, so that the water flow of the first electric valve and the second electric valve is limited, and the correct proportion of the coal grinding water is ensured; the height of the material in the feeding pipe chute is measured by the infrared measuring instrument and is transmitted to the controller, the opening and closing of the second electric valve and the size of the switch are controlled in real time, and blockage is rapidly eliminated.
It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim.
Claims (6)
1. A coal mill with an anti-blocking feeding pipe chute is characterized by comprising a body (1), a feeding pipe chute (2), a feeding device (3), a first pipeline (4) and a second pipeline (5),
the body (1) is used for receiving the materials conveyed by the feeding pipe chute (2) and crushing the materials;
the feeding pipe chute (2) is enclosed by chute walls, is obliquely arranged, has an opening at one end and is used for receiving water and materials, and has an opening at the other end connected with the body (1) and used for conveying the water and the materials into the body (1);
a flushing port is formed in the lateral side of the chute wall of the feeding pipe chute (2) and used for receiving flushing water and flushing materials accumulated in the feeding pipe chute (2);
the feeding device (3) is positioned at the open end of the feeding pipe chute (2) and is used for conveying materials to the feeding pipe chute (2);
the first pipeline (4) is connected with the open end of the feeding pipe chute (2) and is used for conveying water to the feeding pipe chute (2);
the second pipeline (5) is connected with the flushing port and used for conveying flushing water to the flushing port.
2. The coal pulverizer of claim 1, further comprising a controller (6),
the first pipeline (4) is provided with a first electric valve (41) and a first flow rate transmitter (42), the first electric valve (41) is used for controlling the opening and closing of the first pipeline (4) and the flow rate, and the first flow rate transmitter (42) is used for measuring the flow rate of water in the first pipeline (4);
the second pipeline (5) is provided with a second electric valve (51) and a second flow transmitter (52), the second electric valve (51) is used for controlling the opening and closing of the second pipeline (5), and the second flow transmitter (52) is used for measuring the flow of water in the second pipeline (5);
the feeding device (3) is provided with a weighing device which is used for measuring the weight of coal;
the coal-water ratio required by the coal mill is preset in the controller (6);
the controller (6) is electrically connected with the weighing device and is used for acquiring coal weight information measured by the weighing device and calculating the required water amount according to the coal weight information and the coal-water ratio;
the controller (6) is respectively electrically connected with the first electric valve (41), the first flow transmitter (42), the second electric valve (51) and the second flow transmitter (52), water flow information in the first pipeline (4) and the second pipeline (5) is obtained, and the first electric valve (41) and the second electric valve (51) are adjusted to enable the sum of the water flows in the first pipeline (4) and the second pipeline (5) to be equal to the required water amount.
3. The coal pulverizer of claim 2, further comprising an infrared measurement instrument (7),
the infrared measuring instrument (7) is arranged at the top of the feeding pipe chute (2) and is used for detecting the height of the materials stacked in the feeding pipe chute (2);
the controller (6) is electrically connected with the infrared measuring instrument (7) and is used for adjusting the second electric valve (51) according to the detection result of the infrared measuring instrument (7).
4. The coal mill according to claim 1, characterized in that a booster (53) is mounted on the second duct (5) for increasing the impact force of the water flow in the second duct (5).
5. The coal pulverizer of claim 1, wherein the angle of inclination of the feed pipe chute (2) is 60 ° to 65 °.
6. The coal mill according to claim 1, characterized in that the flushing port and the second duct (5) are mounted in plurality for targeted flushing according to different positions of the piled material.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022069888.8U CN213494229U (en) | 2020-09-21 | 2020-09-21 | Coal pulverizer with prevent stifled inlet pipe chute |
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| CN202022069888.8U CN213494229U (en) | 2020-09-21 | 2020-09-21 | Coal pulverizer with prevent stifled inlet pipe chute |
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| CN213494229U true CN213494229U (en) | 2021-06-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113955521A (en) * | 2021-10-29 | 2022-01-21 | 广东韶钢松山股份有限公司 | Automatic detect unloading elephant trunk and swift current material device that blocks up with mediation |
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2020
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113955521A (en) * | 2021-10-29 | 2022-01-21 | 广东韶钢松山股份有限公司 | Automatic detect unloading elephant trunk and swift current material device that blocks up with mediation |
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