WO2017000883A1

WO2017000883A1 - Coal sample online drying device based on collecting and manufacturing integration and online drying method

Info

Publication number: WO2017000883A1
Application number: PCT/CN2016/087661
Authority: WO
Inventors: 朱先德; 张仲焘; 朱青
Original assignee: 湖南三德科技股份有限公司
Priority date: 2015-06-30
Filing date: 2016-06-29
Publication date: 2017-01-05
Also published as: CN105091514B; CN105091514A

Abstract

Provided are a coal sample online drying device based on collecting and manufacturing integration and an online drying method. The drying device comprises a drying chamber (1), a drying chamber upper cover assembly (2), a material falling chamber (3), a heating assembly (4) and an air blower (5), wherein the drying chamber (1) is used for containing a coal sample to be detected and completing a drying operation, the air blower (5) is used for conveying air heated by the heating assembly (4) into the drying chamber (1), the material falling chamber (3) is located below the drying chamber (1), and the coal sample which has been dried in the drying chamber (1) falls into the material falling chamber (3). The online drying method is a control method based on the online drying device, wherein by means of blowing heating from bottom to top or from top to bottom along with stirring, high pressure air enters the drying chamber (1) via the heating assembly (4) to form a relatively closed space, and the heated high pressure air passes through a coal seam to carry away moisture in the coal sample so as to achieve drying. The drying device is simple and compact in structure, convenient to operate, and high in automation degree.

Description

Coal sample online drying device based on integrated production and online drying method

[Technical Field]

The invention mainly relates to the field of coal sample detection, and particularly relates to a coal sample online drying device and an online drying method based on integrated production.

【Background technique】

Due to the different types, grades and batches of coal source and coal, some coal may enter the sampling and sample preparation process, which may cause stick coal, coal plugging, and equipment jam. To this end, it is necessary to pass some pre-automatic online drying to enable the smooth process of sampling, sample preparation, and sampling and sample preparation, and improve the reliability and accuracy of the sample preparation while ensuring the degree of automation. The traditional methods are not designed based on the automatic production of mining, so it has the following shortcomings:

In the whole sampling and sample preparation process, all of them are still manually identified by the naked eye to distinguish the traits of coal. For the wet coal samples, they are processed by manual drying and then enter the sampling and sample preparation process. However, due to the subjectivity of the manual identification and drying process, the phenomenon of missed judgment and misjudgment often occurs. Therefore, before the coal enters the sample preparation system, it needs to be guarded by a person and judged by a special person. The coal that cannot be processed by the automatic sample preparation equipment must be manually separated by the workers, which results in high labor intensity, long cycle and poor precision. .

[Summary of the Invention]

The technical problem to be solved by the present invention is that, in view of the technical problems existing in the prior art, the present invention provides an on-line drying apparatus for coal samples based on integrated production, which is simple and compact in structure, convenient in operation and high in automation.

The invention further provides an on-line drying method based on the above-mentioned coal sample on-line drying equipment with high degree of automation and good drying effect.

In order to solve the above technical problems, the present invention adopts the following technical solutions:

An online drying apparatus for coal sample based on integrated production, comprising a drying chamber, a drying chamber upper cover assembly, a blanking chamber, a heating assembly and a blower fan, wherein the drying chamber is used for accommodating the coal sample to be tested and completing the drying operation, The air blower is used to send the heated air of the heating component into the drying chamber; the blanking chamber is located below the drying chamber, and the dried coal sample in the drying chamber falls into the blanking chamber.

As a further improvement of the present invention, the drying chamber is provided with a drying chamber upper cover assembly, the drying chamber upper cover assembly includes a blast chamber upper cover and a lifting and rotating mechanism, and the lifting and rotating mechanism is fixedly mounted on the blast chamber. Covered, the lifting and rotating mechanism includes a sweeping member and a lifting member, and the sweeping member is mounted on the lifting member for lifting movement.

As a further improvement of the present invention, the lifting and rotating mechanism includes a lifting motor, a rotating electrical machine, a micro switch assembly and a sweeping plate, and the rotating electrical machine is mounted on a transmission mechanism connected to the lifting motor, and the driving end of the rotating electrical machine The wiper blade is connected, and the micro switch assembly is located at a top dead center and a bottom point of the lifting and lowering movement of the lifting and rotating mechanism.

As a further improvement of the present invention, the drying chamber is provided with an inlet, and the coal sample to be dried enters from the inlet, and is stored in a lower chamber located in a lower portion of the drying chamber for drying.

As a further improvement of the present invention, the blast fan is used to send the heated air of the heating assembly to the drying chamber through the blanking chamber; the blanking chamber includes a blast chamber, a welding chamber inner cavity welding member, and a blanking material. a cavity weldment, a sieve plate flap assembly, a sealing flap assembly, a tightening device and a vibrator; the blast chamber, the blank chamber inner weld, the seal flap assembly and the lower chamber of the drying chamber form a relative seal The space allows high pressure air passing through the heating assembly to penetrate the coal seam only from the screen pan assembly.

As a further improvement of the present invention, the sieve tray flap assembly includes a sieve tray flap, a first rotating shaft and a first actuator; the sieve tray flap is driven by the first actuator to achieve a horizontal to vertical direction of 90 The movement of the stroke, which is used to shake off the pulverized coal adhered to the sieve tray.

As a further improvement of the present invention, the sealing flap assembly includes a sealing flap, a second rotating shaft and a second actuator, and the sealing flap assembly realizes a 90° stroke from a horizontal to a vertical direction by the second actuator. exercise.

As a further improvement of the invention: the tightening device comprises a cylinder and a wedge block.

The invention further provides an on-line drying method based on the above-mentioned coal sample on-line drying device, which adopts a method of heating from bottom to top and heating while stirring: high-pressure air is heated after heating assembly, and is formed in a lower cavity of the drying chamber. A relatively sealed space, the heated high-pressure air penetrates the coal seam to carry away the moisture in the coal sample to achieve drying; during the drying process, the lifting and rotating mechanism rotates to drive the scraping sheet for stirring.

The invention further provides an on-line drying method based on the above-mentioned coal sample on-line drying device, which adopts a method of heating from top to bottom blast and heating while stirring: high-pressure air is heated after heating assembly, and a relative is formed in the drying chamber. The sealed space, the heated high-pressure air penetrates the coal seam to carry away the moisture in the coal sample to achieve drying; during the drying process, the lifting and rotating mechanism rotates to drive the scraping sheet for stirring.

The invention further provides an on-line drying method based on the above-mentioned coal sample on-line drying device, which adopts a combination of top-down blast heating and bottom-up blast heating: high-pressure air is heated after heating assembly, and enters in the drying chamber. A relatively sealed space is formed, and the heated high pressure air penetrates the coal seam to carry away the moisture in the coal sample to achieve drying.

The advantages of the present invention over the prior art are:

1. The on-line drying equipment and the online drying method based on the integrated production method of the invention have the advantages of simple and compact structure, convenient operation and high degree of automation, and can realize automatic online drying treatment on the wet coal sample; The viscosity is judged, and the degree of dryness is judged in real time. If the coal sample has met the requirements of the lower unit, it will stop automatically. Dry, the coal sample is automatically blanked and enters the next step. The whole process fully realizes the automatic operation, improves the precision of sample preparation, avoids manual participation, improves work efficiency, and reduces the labor intensity. At the same time, the drying efficiency of the online drying device is greatly improved compared with the conventional drying method, and the time for preparing the whole coal sample is greatly saved.

2. The on-line drying equipment and on-line drying method of the integrated coal sample based on the invention can perform corresponding targeted automatic drying treatment on coal samples with different humidity, so as to avoid subsequent crushing and shrinking in the automatic sampling and sample preparation equipment. Blockage in the sub-equipment causes problems in the entire assembly line.

[Description of the Drawings]

Figure 1 is a schematic view of the structure of the present invention.

Figure 2 is a schematic view showing the structure of the present invention in which a part of the outer casing is removed in another perspective.

Figure 3 is a perspective exploded view of the blanking chamber of the present invention in a specific application example.

Fig. 4 is a schematic view showing the mounting structure of the squeegee in the specific application example of the present invention.

illustration:

1, drying chamber; 101, inlet port; 102, lower chamber; 2, drying chamber upper cover assembly; 201, blast chamber upper cover; 202, lifting and rotating mechanism; 220, lifting motor; 221, rotating electric machine; , screw; 223, screw sleeve; 224, motor mount; 225, micro switch assembly; 226, connecting plate; 227, spur gear; 228, connecting rod; 229, sweeping sheet; 301, blast chamber; 302, blanking chamber inner welding member; 303, blanking chamber welding member; 304, sieve tray flap assembly; 305, sealing flap assembly; 306, tightening device; 307, vibrator; 341, sieve tray flap; 342, first rotating shaft; 343, first driver; 351, sealing flap; 352, second rotating shaft; 353, second driver; 361, cylinder; 362, wedge block; Heating assembly; 5, blower fan.

【detailed description】

The invention will be further described in detail below in conjunction with the drawings and specific embodiments.

The integrated drying coal sample on-line drying device of the invention comprises a drying chamber 1, a drying chamber upper cover assembly 2, a blanking chamber 3, a heating assembly 4 and a blower fan 5, and the drying chamber 1 is used for accommodating the coal sample to be tested. And completing the drying operation, the blower fan 5 is used to send the heated air of the heating assembly 4 into the drying chamber 1; the blanking chamber 3 is located below the drying chamber 1, and the dried coal sample falls into the drying chamber 1 In the chamber 3.

The drying chamber 1 is provided with a feed port 101, and the coal sample to be dried enters from the inlet port 101 and is stored in the lower cavity 102 located in the lower portion of the drying chamber 1 for drying.

In this embodiment, the drying chamber 1 is provided with a drying chamber upper cover assembly 2 for performing a scraping operation on the coal sample to be tested. The drying chamber upper cover assembly 2 includes a blast chamber upper cover 201 and a lifting and rotating mechanism 202. The lifting and rotating mechanism 202 is fixedly mounted on the blast chamber upper cover 201. The lifting and rotating mechanism 202 is a mechanism having a sweeping function and can pass Lifting and rotating motion to achieve the sweeping operation of the coal sample to be tested. In this example, the lifting and rotating mechanism 202 includes a lifting motor 220, rotary motor 221, screw 222, screw sleeve 223, motor mount 224, connecting plate 226, spur gear 227, micro switch assembly 225, connecting rod 228 and sweeping plate 229, wherein: lifting motor 220 is used The driving screw 222 rotates, and the driving screw sleeve 223 drives the connecting plate 226, the rotating electric machine 221, the spur gear 227, the connecting rod 228, and the sweeping piece 229 to perform the lifting movement as a whole. The rotary electric machine 221 is used to drive the connecting rod 228 through the spur gear 227, and to perform a rotational motion together with the sweeping piece 229. The lifting and rotating mechanism 202 can realize the lifting and lowering movement, and can also realize the independent movement of lifting and rotating. The micro switch assembly 225 is used to limit the top dead center and the bottom dead center of the lifting and lowering mechanism 202.

In this embodiment, the air blower 5 is used to send the heated air of the heating assembly 4 to the drying chamber 1 through the blanking chamber 3; the blanking chamber 3 includes a blast chamber 301, a blanking chamber inner cavity welding member 302, and a falling chamber a cavity weldment 303, a sieve pan flap assembly 304, a sealing flap assembly 305, a tightening device 306, and a vibrator 307; wherein, the blast chamber 301, the blanking cavity inner weld member 302, the sealing flap assembly 305 and The lower chamber 102 of the drying chamber 1 forms a relatively sealed space such that high pressure air passing through the heating assembly 4 can only penetrate the coal seam from the screen pan assembly 304, thereby removing moisture from the coal sample.

The sieve tray flap assembly 304 includes a sieve tray flap 341, a first rotating shaft 342 and a first driver 343; the screen tray flap 341 is driven by the first driver 343 to achieve a 90° stroke from horizontal to vertical. Before the coal sample to be inspected, the sieve tray assembly 304 is rotated from the vertical direction to the horizontal direction by the first actuator 343, and under the action of the tightening device 306, the sieve tray 341 is reliably tightened. The coal sample to be dried can be dropped onto the sieve tray 341 for drying treatment. After the coal sample is dried, the tightening device 306 is retracted, and the sieve pan flap 341 is turned from the horizontal direction to the vertical direction by the first drive 343, and the detected coal sample falls along the inclined wall surface of the blanking chamber 3 into the lower unit. . The vibrator 307 is turned on, and the pulverized coal adhered to the sieve pan 341 is shaken off.

The sealing flap assembly 305 includes a sealing flap 351, a second rotating shaft 352, and a second driver 353. The sealing flap assembly 305 realizes a 90° stroke from a horizontal to a vertical direction under the driving of the second driver 353. After the disk flap 341 is turned to the horizontal position, the sealing flap assembly 305 is rotated from the vertical direction to the horizontal direction under the action of the second driver 353, and under the action of the tightening device 306, the sieve plate flap 341 is reliably tightened. At this time, the blast chamber 301, the blank chamber inner weld member 302, the sealing flap assembly 305 and the lower chamber 102 of the drying chamber 1 form a relatively sealed space, so that the high-pressure air passing through the heating assembly 4 can only be turned from the sieve tray. The plate 341 penetrates the coal seam to carry away the moisture in the coal sample.

The jacking device 306 includes a needle-shaped cylinder 361 and a wedge block 362. When the screen pan 341 is turned to a horizontal position, the cylinder 361 ejects the wedge block 362 to reliably tighten the screen pan 341; when the sealing flap assembly 305 When flipped to the horizontal position, the cylinder 361 ejects the wedge block 362, reliably tightening the sealing flap assembly 305. Wherein, the screen pan 341 is tightened at the end by a jacking device 306, and the sealing flap assembly 305 is tightened by three jacking devices 306, one of the left and right sides, distributed in the middle of the sealing flap assembly 305. At the end of the sealing flap assembly 305, the sealing of the sealing flap assembly 305 is achieved by a secondary tightening method, that is, the cylinders 361 of the left and right side clamping devices 306 are simultaneously pushed out of the wedge block 362. At this time, the sealing flap assembly 305 is pushed up closer to the lower cavity 102 sealing flange of the drying chamber 1, The cylinder 361 of the end jacking device 306 then ejects the wedge block 362 to securely seal the flap assembly 305.

Working principle: Before the coal sample is dried, the first driver 343 is first activated to turn the sieve tray 341 from the vertical position to the horizontal position, and then the cylinder 361 of the tightening device 306 is ejected from the wedge block 362 to reliably tighten the sieve tray. The plate 341; then activates the second driver 353, also flips the sealing flap 351 from the vertical position to the horizontal position, and then the cylinders 361 of the left and right side tightening devices 306 first eject the wedge block 362, and then the end tightening device 306 The cylinder 361 is ejected from the wedge block 362, and is secondarily tightened to tightly seal the flap 351 to achieve a reliable sealing of the sealing flap 351 and the sealing flange of the lower cavity 102 of the drying chamber 1. Then, the lifting motor 220 in the lifting and rotating mechanism 202 is activated, the connecting plate 226 is lowered to the lowest position together with the sweeping piece 229, the connecting plate 226 triggers the lower limit micro-switch assembly 225, and the lifting motor 220 is stopped; The nozzle 101 enters the drying chamber 1 and falls onto the sieve tray 341. Then, the rotary motor 221 and the lifting motor 220 in the lifting and rotating mechanism 202 are activated. The connecting plate 226 and the sweeping piece 229 are raised while rotating, and the coal sample is dried. The lower cavity 102 of the cavity 1 is flattened, and then the blower fan 5 is started, and then the heating assembly 4 is started. In order to ensure that the characteristics of the coal sample are not destroyed during the drying process, the temperature of the heating component 4 is controlled by temperature. The module is controlled in the range of 40 °C. During the drying process, the degree of drying of the coal sample is judged in real time by the viscosity judgment function module. After judging that the coal sample satisfies the demand of the lower sample preparation step, the heating assembly 4 is stopped first, the heating is stopped, and then the blower fan 5 is stopped, and the lifting and lowering is started. The rotating electric machine 221 of the mechanism 202 stirs and mixes the dried coal sample, then first retracts the tightening device 306 of the sealing flap 351, opens the second driving device 353, and the sealing flap 351 is turned from the horizontal position to the vertical position; The jacking device 306 of the disc flap assembly 304 opens the first driver 343, and the screen disc flap 341 is turned from the horizontal position to the vertical position, while the coal sample will slide down the slope of the blanking chamber 3 to the lower unit.

The invention further provides an on-line drying method based on the above-mentioned coal sample on-line drying equipment, that is, a method of "heating from bottom to top and heating while stirring" can be adopted. That is, the high-pressure air is heated by the heating assembly 4 and enters the blast chamber 301. The sealing flap 351, the blanking chamber inner welding member 302, the blast chamber 301, and the lower chamber 102 of the drying chamber 1 form a relatively sealed space. The heated high-pressure air can only penetrate the coal seam from the sieve pan 341, thereby taking away the moisture in the coal sample to achieve the purpose of drying. During the drying process, the rotary electric machine 221 in the lifting and rotating mechanism 202 can be rotated to drive the sweeping piece 229 to perform agitation, which contributes to more efficient dehumidification during the drying process of the coal sample.

Alternatively, the present invention further provides an on-line drying method based on the above-mentioned coal sample on-line drying apparatus, that is, a method of "heating from top to bottom blast, stirring while heating". That is, the high-pressure air is heated by the heating assembly 4 and enters the drying chamber 1. The drying chamber 1 forms a relatively sealed space. The heated high-pressure air can only penetrate the coal seam and is discharged from the sieve tray 341 to the outside, thereby transferring the coal. The moisture in the sample is taken away to achieve the purpose of drying. During the drying process, the rotary electric machine 221 in the lifting and rotating mechanism 202 can be rotated to drive the sweeping piece 229 to perform agitation, which contributes to more efficient dehumidification during the drying process of the coal sample.

Alternatively, the present invention further provides an on-line drying method based on the above-mentioned coal sample on-line drying device, that is, adopting "self Combination of up-and-down blast heating and top-down blast heating. For over-wet coal samples, the coal sample is impervious by unilateral drying from bottom-up blast heating or top-down blast heating. The phenomenon of dry and wet stratification. Therefore, the lower coal sample is firstly dried by the bottom-up blast heating method, and then the upper coal sample is dried by the upper and lower blast heating. The coal is solved by the combined drying method. The sample is dry, wet and stratified.

The above is only a preferred embodiment of the present invention, and the scope of protection of the present invention is not limited to the above embodiments, and all the technical solutions under the inventive concept belong to the protection scope of the present invention. It should be noted that a number of improvements and modifications without departing from the principles of the invention are considered to be within the scope of the invention.

Claims

An on-line drying apparatus for coal samples based on integrated production, characterized in that it comprises a drying chamber (1), a drying chamber upper cover assembly (2), a blanking chamber (3), a heating assembly (4) and a blower fan ( 5), the drying chamber (1) is used to accommodate the coal sample to be tested and complete the drying operation, the blower fan (5) is used to send the heated air of the heating assembly (4) into the drying chamber (1); The blanking chamber (3) is located below the drying chamber (1), and the dried coal sample in the drying chamber (1) falls into the blanking chamber (3).
The on-line drying apparatus for coal sampling based on integrated production according to claim 1, characterized in that the drying chamber (1) is provided with a drying chamber upper cover assembly (2), and the drying chamber upper cover assembly (2) Included in the blast chamber upper cover (201) and the lifting and rotating mechanism (202), the lifting and rotating mechanism (202) is fixedly mounted on the blast chamber upper cover (201), and the lifting and rotating mechanism (202) includes a sweeping A component and a lifting component mounted on the lifting component for lifting movement.
The on-line drying apparatus for coal sampling based on integrated production according to claim 2, wherein the lifting and rotating mechanism (202) comprises a lifting motor (220), a rotating electrical machine (221), and a micro switch assembly (225). And a sweeping piece (229), the rotating electric machine (221) is mounted on a transmission mechanism connected to the lifting motor (220), and the driving end of the rotating electric machine (221) is connected to the sweeping piece (229), the micro The movable switch assembly (225) is located at the top dead center and the bottom point of the lifting and lowering motion of the lifting and rotating mechanism (202).
The on-line drying apparatus for coal sample based on integrated production according to claim 1 or 2 or 3, characterized in that the drying chamber (1) is provided with an inlet (101), and the coal sample to be dried is fed from the material. The mouth (101) enters and is stored in a lower chamber (102) located in the lower portion of the drying chamber (1) for drying.
The on-line drying apparatus for coal sampling based on integrated production according to claim 1 or 2 or 3, characterized in that the blower fan (5) is used to pass the heated air of the heating assembly (4) through the blanking chamber (3) feeding into the drying chamber (1); the blanking chamber (3) includes a blast chamber (301), a blanking chamber inner welding member (302), a blanking chamber welding member (303), and a sieve tray Plate assembly (304), sealing flap assembly (305), tightening device (306) and vibrator (307); blast chamber (301), blank chamber weld (302), sealing flap The assembly (305) forms a relatively sealed space with the lower chamber (102) of the drying chamber (1) such that high pressure air passing through the heating assembly (4) can only penetrate the coal seam from the screen tray assembly (304).
The integrated coal sample on-line drying apparatus according to claim 5, wherein the sieve tray flap assembly (304) comprises a sieve tray flap (341), a first rotating shaft (342) and a a driver (343); the screen tray (341) is driven by the first driver (343) to achieve a 90° stroke from horizontal to vertical. The vibrator (307) is used to shake off the pulverized coal adhered to the sieve pan (341).
The integrated coal sample on-line drying apparatus according to claim 6, wherein the sealing flap assembly (305) comprises a sealing flap (351), a second rotating shaft (352) and a second actuator (353), the sealing flap assembly (305) realizes a movement of a 90° stroke from a horizontal to a vertical direction by the second actuator (353).
The coal-based on-line drying apparatus according to claim 5, wherein the tightening device (306) comprises a cylinder (361) and a wedge block (362).
An on-line drying method for an on-line drying apparatus for coal samples according to any one of claims 2 to 7, characterized in that the method of heating from bottom to top and heating while stirring: high-pressure air passing through the heating assembly (4) After heating, the lower cavity (102) of the drying chamber (1) forms a relatively sealed space, and the heated high-pressure air penetrates the coal layer to carry away the moisture in the coal sample to achieve drying; during the drying process, The lifting and rotating mechanism (202) rotates to drive the squeegee (229) for agitation.
An on-line drying method for an on-line drying apparatus for coal samples according to any one of claims 2 to 7, characterized in that the method of heating from top to bottom and heating while stirring: high-pressure air passing through the heating assembly (4) After heating, entering, forming a relatively sealed space in the drying chamber (1), the heated high-pressure air penetrates the coal seam to carry away the moisture in the coal sample to achieve drying; in the drying process, the lifting and rotating mechanism (202) Rotate and drive the sweeping piece (229) to stir.
An on-line drying method for an on-line drying apparatus for coal samples according to any one of claims 2 to 7, characterized in that a combination of top-down blast heating and bottom-up blast heating is adopted: high-pressure air is heated The component (4) enters after heating, forming a relatively sealed space in the drying chamber (1), and the heated high-pressure air penetrates the coal seam to carry away the moisture in the coal sample to achieve drying.