CN109459344B

CN109459344B - Coal sample viscosity detection and rectification device

Info

Publication number: CN109459344B
Application number: CN201811315749.XA
Authority: CN
Inventors: 何海涛; 陈国强; 唐�谦
Original assignee: Hunan Institute of Engineering
Current assignee: Hunan Institute of Engineering
Priority date: 2018-11-07
Filing date: 2018-11-07
Publication date: 2021-06-18
Anticipated expiration: 2038-11-07
Also published as: CN109459344A

Abstract

The invention discloses a coal sample viscosity detection and rectification device, which comprises a belt conveyor main body, a rotating speed sensor, a conveying belt, a torque sensor, an ultrasonic sensor, an impeller and a sampling machine control system, wherein the belt conveyor main body is provided with a belt conveyor main body; the belt conveyor main body is provided with a hopper and a conveying belt; the belt conveyor main body is provided with an impeller, the axis of the impeller is vertical to the conveying belt, and a plurality of rotary blades are arranged on a rotating shaft of the impeller along the axis direction; the ultrasonic sensor is arranged on a top plate of the belt conveyor main body and is positioned between the hopper and the impeller; the rotating speed sensor and the torque sensor are arranged on a rotating shaft of the impeller; the ultrasonic sensor, the rotating speed sensor and the torque sensor are respectively connected with a control system of the sampling machine. The invention has simple structure and simple operation, is not influenced by the uneven coal flow and the instant load generated by particles in the coal flow, and has high detection accuracy on the viscosity of the coal sample.

Description

Coal sample viscosity detection and rectification device

Technical Field

The invention belongs to the technical field of coal sample viscosity detection, and particularly relates to a coal sample viscosity detection and rectification device.

Background

At present, a full-automatic coal sampling system is more and more widely used, but the quality of the full-automatic coal sampling system is continuously reduced, particularly, the consumption of lignite and the like is more and more large, the moisture high fluidity of the coal is poor, the phenomena of pipe blockage and the like are often caused in a sample preparation channel, and partial manufacturers select to carry out pre-drying before the coal sample enters the sample preparation system, so that the following problems are mainly brought:

1. the impact of the particles on the swing rod is large in the test process, so that the precision value is influenced;

2. the coal flow rate changes greatly in the actual work, so that the coal sample amount falling to the swing rod is unstable, and the influence on the detection result is large.

Disclosure of Invention

In order to solve the technical problems, the invention provides the coal sample viscosity detection and rectification device which is simple in structure, simple and convenient to operate, free from the influence of the uneven coal flow and the instant load generated by particles in the coal flow and high in detection accuracy.

The technical scheme adopted by the invention is as follows: a coal sample viscosity detection and rectification device comprises a belt conveyor main body, a rotating speed sensor, a conveying belt, a torque sensor, an ultrasonic sensor, an impeller and a sampling machine control system; the belt conveyor main body is provided with a hopper and a conveying belt; the belt conveyor main body is provided with an impeller, the axis of the impeller is vertical to the conveying belt, and a rotating shaft of the impeller is radially provided with a plurality of rotating blades; the ultrasonic sensor is arranged on a top plate of the belt conveyor main body and is positioned between the hopper and the impeller; the rotating speed sensor and the torque sensor are arranged on a rotating shaft of the impeller; the ultrasonic sensor, the rotating speed sensor and the torque sensor are respectively connected with a control system of the sampling machine.

In the coal sample viscosity detecting and rectifying device, the two ends of the conveying belt are sleeved on the rollers, the rollers are horizontally arranged in the belt conveyor body, and the two ends of the rollers are arranged on the side wall of the belt conveyor body through bearings.

In the coal sample viscosity detecting and rectifying device, the top plate of the belt conveyor main body is provided with the blade shaft shield with a semicircular section, and the blade shaft shield is positioned on the outer side of the rotary blade.

Among the foretell coal sample viscosity detection and fairing, belt feeder main part roof on install the ultrasonic sensor mounting bracket of shaft-like structure, ultrasonic sensor mounting bracket perpendicular to conveyer belt sets up, evenly is provided with a plurality of ultrasonic sensor on the ultrasonic sensor mounting bracket.

Compared with the prior art, the invention has the beneficial effects that:

1. the invention has simple structure and convenient operation, dynamically collects the cross-section data, and the obtained viscosity data is not influenced by the non-uniform coal flow and the instant load generated by particles in the coal flow, thereby ensuring the accuracy of detection.

2. The data collected by the invention are transmitted to the control system of the sample making machine, processed by the control system of the sample making machine and sent instructions, and the control system of the sample making machine has corresponding data processing capacity, so that the shared sample making machine control system of the invention has high intelligentization, simple structure and low cost;

3. the rotating blade has the effects of shaping and uniformly stirring the coal flow while collecting the torque and rotating speed data generated by the coal flow, integrates the function of a rectifying device, and has great benefits on the precision and the representativeness of a sample preparation system.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a cross-sectional view of the present invention.

Detailed Description

The invention will be further described with reference to the accompanying drawings.

As shown in fig. 1 and 2, the sample preparation machine comprises a belt conveyor main body 1, a rotating speed sensor 6, a conveying belt 11, a torque sensor 7, an ultrasonic sensor 5, an impeller 9 and a sample preparation machine control system 8. Be equipped with hopper 2 on the 1 roof of belt feeder main part, be equipped with conveyer belt 11 in the belt feeder main part 1, the both ends suit of conveyer belt 11 on cylinder 12, cylinder 12 level sets up in belt feeder main part 1, the bearing is passed through at the both ends of cylinder 12 and is installed on the lateral wall of belt feeder main part 1.

Belt feeder main part 1 on install impeller 9, the axis perpendicular to conveyer belt 11 of impeller 9, impeller 9 is close to feeder hopper 2 setting, is equipped with a plurality of rotating vane along radial on impeller 9's the pivot 91. The roof of belt feeder main part 1 on install the ultrasonic sensor mounting bracket 3 of rod-like structure, ultrasonic sensor mounting bracket 3 sets up perpendicular to conveyer belt 1, evenly is provided with three ultrasonic sensor 5 on the ultrasonic sensor mounting bracket 3 (be not limited to three ultrasonic sensor 5, can be less than three, also can be more than three), ultrasonic sensor mounting bracket 3 is located between hopper 2 and the impeller 9. The rotating speed sensor 6 and the torque sensor 7 are arranged on a rotating shaft 91 of the impeller 9; the ultrasonic sensor 5, the rotating speed sensor 6 and the torque sensor 7 are respectively connected with a sample preparation machine control system 8. A blade shaft shield 4 with a semicircular section is arranged on a top plate of the belt conveyor main body 1, and the blade shaft shield 4 is positioned on the outer side of the rotary blade.

When the coal sampling device is used, coal is fed from the hopper 2, when the coal moves rightwards along with the conveying belt 11 and passes through the radiation area of the three ultrasonic sensors 5, the height information of a plurality of points of a coal sample is collected by the ultrasonic sensors 5 and is conveyed to the sample preparation machine control system 8 through data lines to obtain the cross section information of the coal flow, and the ultrasonic sensors 5 are fixed on the ultrasonic sensor mounting frame 3 and are arranged at the top of the belt conveyor main body 1, so that the data collection distortion caused by burying of the coal sample is avoided.

A plurality of rotary blades are arranged on the rotating shaft 91 of the impeller 9 along the axial direction, the rotary blades are arranged in a staggered mode in the radial direction, a certain angle is formed between the rotary blades and the coal flow direction, the thrust generated by the coal flow is more sensitive, the two ends of the rotating shaft 91 of the impeller 9 are fixed on the belt conveyor main body 1 through bearing seats, when the coal flow passes through the position of the impeller 9, the impeller 9 is pushed to rotate, meanwhile, the impeller 9 rectifies the coal flow, the coal flow passing through the area of the impeller is enabled to be more uniform, and the work of a follow-up sample preparation system is facilitated.

The information of the rotating speed and the torque obtained by the rotating speed sensor 6 and the torque sensor 7 is collected and then is transmitted to a sample preparation machine control system 8 through a data line; and obtaining viscosity data of the coal flow by combining the obtained section height information of the coal flow and the coal flow speed (the coal flow speed is determined by the running speed of the belt and is a fixed value), and judging whether the coal flow needs to be dried by the control system 8 of the sampling machine according to the measured viscosity data to enter a subsequent sampling process.

Claims

1. A coal sample viscosity detection and rectification device comprises a belt conveyor main body, a rotating speed sensor, a conveying belt, a torque sensor, an ultrasonic sensor, an impeller and a sampling machine control system; the method is characterized in that: the belt conveyor main body is provided with a hopper and a conveying belt; the belt conveyor main body is provided with an impeller, the axis of the impeller is vertical to the conveying belt, and a rotating shaft of the impeller is radially provided with a plurality of rotating blades; the ultrasonic sensor is arranged on a top plate of the belt conveyor main body and is positioned between the hopper and the impeller; the rotating speed sensor and the torque sensor are arranged on a rotating shaft of the impeller; the ultrasonic sensor, the rotating speed sensor and the torque sensor are respectively connected with a control system of the sampling machine; the rotating speed and torque information obtained by the rotating speed sensor and the torque sensor is collected and then is transmitted to a control system of the sampling machine through a data line; and the sampling machine control system obtains the viscosity data of the coal flow according to the obtained rotating speed and torque information and the obtained section height information and coal flow speed of the coal flow.

2. The coal sample viscosity detecting and rectifying device according to claim 1, wherein: the two ends of the conveying belt are sleeved on the rollers, the rollers are horizontally arranged in the belt conveyor body, and the two ends of the rollers are arranged on the side wall of the belt conveyor body through bearings.

3. The coal sample viscosity detecting and rectifying device according to claim 1, wherein: the belt conveyor main body top plate is provided with a blade shaft shield with a semicircular section, and the blade shaft shield is positioned on the outer side of the rotary blade.

4. The coal sample viscosity detecting and rectifying device according to claim 1, wherein: belt feeder main part roof on install the ultrasonic sensor mounting bracket of rod-like structure, ultrasonic sensor mounting bracket perpendicular to conveyer belt sets up, evenly is provided with a plurality of ultrasonic sensor on the ultrasonic sensor mounting bracket.