Belt conveying type on-line sampling and sample preparation integrated device for fire coal

Abstract

The utility model relates to the technical field of fire coal sampling and sample preparation, in particular to a belt conveying type on-line fire coal sampling and sample preparation integrated device, which comprises a sampling machine, a sampling belt conveyor, a sample preparation device, a sample reserving box and a recovery device, the sampling belt conveyor is communicated with a second sample conveying pipeline, a discharge port of the second sample conveying pipeline is correspondingly provided with a sample preparation device, the sample preparation device is communicated with a third sample conveying pipeline, a discharge port of the third sample conveying pipeline is correspondingly provided with a sample reserving box, and a fourth sample conveying pipeline is communicated between the sample preparation device and the recovery device. The device is reasonable and compact in structure and convenient to use, the sampling and sample preparation efficiency of belt conveying type fire coal is improved, coal sample test data are timely and effective, abandoned samples are timely returned to a coal conveying system, the problem of cost waste is avoided, and the device has the characteristics of safety, labor saving, simplicity, convenience and high efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of coal sampling and sample preparation, and is an integrated device for online sampling and sample preparation of belt-conveyed coal. Background Art

[0002] Belt conveying of solid media is one of the important media transportation links in the coal, electric power, metallurgy, chemical and other industries. Especially in the process system of coal chemical enterprises, belt conveyors transport fuel coal (reaction raw materials) to some large process equipment for coal gasification reaction. It is a time-saving and labor-saving transportation method.

[0003] A coal chemical company needs to transport fuel coal to large-scale equipment such as gasifiers and boilers for gasification or combustion. The quality of each batch of fuel coal affects the adjustment of the process operating parameters of large-scale equipment such as gasifiers or boilers. If the process operating parameters of large-scale equipment such as gasifiers or boilers are not adjusted in a timely manner or are adjusted incorrectly, it will directly affect the qualified indicators of various fuel coal end products of the company. Therefore, staff need to regularly obtain fuel coal samples from the conveyor belt for sample preparation, and then conduct chemical analysis to obtain relevant component index parameters after the samples are prepared. However, this sampling and sample preparation method has certain subjective factors, and there is a certain delay in obtaining the relevant component index parameters of different batches of fuel coal. In addition, the tested coal samples cannot be recycled, which also causes a certain amount of waste.

[0004] In summary, the delay in sampling and preparation of belt-conveyed fuel coal has become a long-term technical problem that is difficult for enterprises to solve. Summary of the Invention

[0005] The utility model provides an integrated online sampling and preparation device for belt-conveyed coal, which overcomes the shortcomings of the above-mentioned prior art and can effectively solve the problems of time delay and sample waste in the existing belt-conveyed coal sampling and preparation method.

[0006] The technical solution of the present utility model is achieved through the following measures: an integrated online sampling and preparation device for belt-conveyed coal, comprising a sampler, a sampling belt conveyor, a sample preparation device, a sample retention box, and a recovery device; a first sample delivery pipeline is fixedly connected between the bottom discharge port of the sampler and the feed port of the sampling belt conveyor, a second sample delivery pipeline is fixedly connected to the discharge port of the sampling belt conveyor, a sample preparation device is correspondingly provided at the discharge port of the second sample delivery pipeline, a third sample delivery pipeline is fixedly connected to the first discharge port of the sample preparation device, a sample retention box is correspondingly provided at the discharge port of the third sample delivery pipeline, and a fourth sample delivery pipeline is fixedly connected between the second discharge port of the sample preparation device and the feed port of the recovery device.

[0007] The following are further optimizations and / or improvements to the above-mentioned utility model technical solution:

[0008] The above-mentioned sample preparation device includes a first-level crusher, a first-level reducer, a second-level crusher, and a second-level reducer. The discharge port of the sampling belt conveyor is fixedly connected to the second sample supply pipeline, and the discharge port of the second sample supply pipeline is correspondingly provided with a first-level crusher. The bottom discharge port of the first crusher is fixedly connected to the fifth sample supply pipeline, and the discharge port of the fifth sample supply pipeline is correspondingly provided with a first-level reducer. The first discharge port at the bottom of the first reducer is fixedly connected to the sixth sample supply pipeline, and the discharge port of the sixth sample supply pipeline is correspondingly provided with a second-level crusher. The bottom discharge port of the second crusher is fixedly connected to the seventh sample supply pipeline, and the discharge port of the seventh sample supply pipeline is correspondingly provided with a second-level reducer. The first discharge port at the bottom of the second reducer is fixedly connected to the third sample supply pipeline, and the discharge port of the third sample supply pipeline is correspondingly provided with a sample retention box.

[0009] An eighth sample delivery pipeline is fixedly connected between the second discharge port at the bottom of the first-stage reducer and the fourth sample delivery pipeline.

[0010] The above-mentioned recovery device includes a discarded sample tank and a discarded sample belt conveyor. A fourth sample delivery pipeline is fixedly connected between the second discharge port at the bottom of the secondary reducer and the discarded sample tank. A ninth sample delivery pipeline is fixedly connected between the discharge port at the bottom of the discarded sample tank and the feed port of the discarded sample belt conveyor. The discharge port of the discarded sample belt conveyor is fixedly connected to a tenth sample delivery pipeline.

[0011] The above-mentioned device also includes a full moisture tank. The fifth sample delivery pipeline is fixedly connected to the eleventh sample delivery pipeline, and the full moisture tank is correspondingly provided at the outlet of the eleventh sample delivery pipeline.

[0012] The above-mentioned first sample pipeline, second sample pipeline, third sample pipeline, fourth sample pipeline, fifth sample pipeline, sixth sample pipeline, seventh sample pipeline, eighth sample pipeline, ninth sample pipeline, tenth sample pipeline and eleventh sample pipeline are all inclined pipelines with the feed port higher than the discharge port.

[0013] The feed ports of the above-mentioned sampling belt conveyor and the discarded sample belt conveyor are both lower than the discharge ports.

[0014] The first-stage crusher and the second-stage crusher are both provided with a crushing device, which includes a motor, a transmission shaft, a hammer head, and a screen plate provided at the bottom of the hammer head.

[0015] A scraper is provided on the top of the sampler.

[0016] The above-mentioned device also includes a controller, and the sampler, sampling belt conveyor, first-level reducer, second-level reducer, discarded sample belt conveyor, and motor are all electrically connected to the controller.

[0017] The utility model has a reasonable and compact structure and is easy to use. It can scrape the coal from the cross section of the conveyor belt in real time to take samples and then prepare samples, thereby improving the sampling and preparation efficiency of belt-conveyed coal, and has the characteristics of safety, labor saving, simplicity and high efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Attachment Figure 1 This is a schematic diagram of the process flow of this utility model.

[0019] Attachment Figure 1 The codes are: 1 for sampler, 2 for sampling belt conveyor, 3 for sample box, 4 for the first sample pipeline, 5 for the second sample pipeline, 6 for the third sample pipeline, 7 for the fourth sample pipeline, 8 for the first-level crusher, 9 for the first-level reducer, 10 for the second-level crusher, 11 for the second-level reducer, 12 for the fifth sample pipeline, 13 for the sixth sample pipeline, 14 for the seventh sample pipeline, 15 for the eighth sample pipeline, 16 for the discarded sample tank, 17 for the discarded sample belt conveyor, 18 for the ninth sample pipeline, 19 for the tenth sample pipeline, 20 for the full moisture box, 21 for the eleventh sample pipeline, 22 for the motor, 23 for the drive shaft, 24 for the hammer head, 25 for the sieve plate, and 26 for the scraper. DETAILED DESCRIPTION

[0020] The present invention is not limited by the following embodiments, and specific implementation methods can be determined based on the technical solution of the present invention and actual conditions.

[0021] In the present invention, unless otherwise specified, the equipment and devices used are all the equipment and devices known and used in the art.

[0022] In this utility model, for the convenience of description, the relative position relationship of each component is described based on the Figure 1 The positional relationships of front, back, top, bottom, left, and right are described in the layout of the manual. Figure 1 The layout direction is determined by the

[0023] The present invention will be further described below in conjunction with the embodiments and accompanying drawings:

[0024] Example 1: As shown in the attached Figure 1 As shown, the integrated online sampling and preparation device for belt-conveyed coal includes a sampler 1, a sampling belt conveyor 2, a sample preparation device, a sample retention box 3, and a recovery device. A first sample delivery pipeline 4 is fixedly connected between the bottom discharge port of the sampler 1 and the feed port of the sampling belt conveyor 2, a second sample delivery pipeline 5 is fixedly connected to the discharge port of the sampling belt conveyor 2, a sample preparation device is correspondingly provided at the discharge port of the second sample delivery pipeline 5, a third sample delivery pipeline 6 is fixedly connected to the first discharge port of the sample preparation device, a sample retention box 3 is correspondingly provided at the discharge port of the third sample delivery pipeline 6, and a fourth sample delivery pipeline 7 is fixedly connected between the second discharge port of the sample preparation device and the feed port of the recovery device.

[0025] The above-mentioned integrated device for online sampling and preparation of belt-conveyed coal can be further optimized and / or improved according to actual needs:

[0026] Example 2: The difference between it and Example 1 is that: Figure 1 As shown, the sample preparation device includes a first-level crusher 8, a first-level reducer 9, a second-level crusher 10, and a second-level reducer 11. The discharge port of the sampling belt conveyor 2 is fixedly connected to the second sample supply pipeline 5, and the discharge port of the second sample supply pipeline 5 is correspondingly provided with the first-level crusher 8. The bottom discharge port of the first-level crusher 8 is fixedly connected to the fifth sample supply pipeline 12, and the discharge port of the fifth sample supply pipeline 12 is correspondingly provided with the first-level reducer 9. The first discharge port at the bottom of the first-level reducer 9 is fixedly connected to the sixth sample supply pipeline 13, and the discharge port of the sixth sample supply pipeline 13 is correspondingly provided with the second-level crusher 10. The bottom discharge port of the second-level crusher 10 is fixedly connected to the seventh sample supply pipeline 14, and the discharge port of the seventh sample supply pipeline 14 is correspondingly provided with the second-level reducer 11. The first discharge port at the bottom of the second-level reducer 11 is fixedly connected to the third sample supply pipeline 6, and the discharge port of the third sample supply pipeline 6 is correspondingly provided with a sample retention box 3.

[0027] Example 3: The difference between it and Example 1 to Example 2 is that: Figure 1 As shown, an eighth sample delivery pipeline 15 is fixedly connected between the second discharge port at the bottom of the first-stage reducer 9 and the fourth sample delivery pipeline 7 .

[0028] Example 4: The difference between it and Example 1 to Example 3 is that: Figure 1 As shown, the recovery device includes a discarded sample tank 16 and a discarded sample belt conveyor 17. A fourth sample delivery pipeline 7 is fixedly connected between the second discharge port at the bottom of the secondary reducer 11 and the discarded sample tank 16. A ninth sample delivery pipeline 18 is fixedly connected between the discharge port at the bottom of the discarded sample tank 16 and the feed port of the discarded sample belt conveyor 17. A tenth sample delivery pipeline 19 is fixedly connected to the discharge port of the discarded sample belt conveyor 17.

[0029] Example 5: The difference between it and Example 1 to Example 4 is that: Figure 1 As shown, the device further includes a full moisture tank 20 , the fifth sample delivery pipeline 12 is fixedly connected to an eleventh sample delivery pipeline 21 , and the full moisture tank 20 is correspondingly provided at the discharge port of the eleventh sample delivery pipeline 21 .

[0030] Example 6: The difference between it and Example 1 to Example 5 is that: Figure 1 As shown, the first sample pipeline 4, the second sample pipeline 5, the third sample pipeline 6, the fourth sample pipeline 7, the fifth sample pipeline 12, the sixth sample pipeline 13, the seventh sample pipeline 14, the eighth sample pipeline 15, the ninth sample pipeline 18, the tenth sample pipeline 19, and the eleventh sample pipeline 21 are all inclined pipelines with the feed port higher than the discharge port.

[0031] As needed, the sample delivery pipeline can flow out by itself according to its own gravity, and the sample delivery pipeline can also be set into a funnel shape with a large diameter inlet and a small diameter outlet.

[0032] Example 7: The difference between it and Example 1 to Example 6 is that: Figure 1 As shown, the heights of the feed ports of the sampling belt conveyor 2 and the discarded sample belt conveyor 17 are both lower than the discharge ports.

[0033] As needed, the sampling belt conveyor 2 can lift the coal sample to a high position for transportation, so that the coal sample (coal sample) can be transported through a sample pipeline with a certain slope by relying on its own gravity. The discarded sample belt conveyor 17 can lift the discarded sample to the upper part of the coal conveying belt (coal conveying system) and return the discarded sample to the input coal conveying belt (coal conveying system) for reuse.

[0034] Example 8: The difference between it and Example 1 to Example 7 is that: Figure 1 As shown, both the primary crusher 8 and the secondary crusher 10 are provided with a crushing device, which includes a motor 22, a transmission shaft 23, and a hammer head 24. A screen plate 25 is provided at the lower part of the hammer head 24.

[0035] As needed, one or more sieve plate holes can be set on the sieve plate 25. When the motor 22 is started, the drive shaft 23 drives the hammer head 24 to rotate rapidly. At this time, the hammer head 24 generates a huge centrifugal force to open outward to form an impact ring. The hammer head 24 hits the materials entering the primary crusher 8 and the secondary crusher 10 due to the centrifugal force and rotational force, and crushes the materials by colliding with each other. The crushed materials pass through the sieve plate 25 (the discharge particle size can be adjusted by selecting sieve plates 25 with different apertures) and flow into the primary reducer 2 or the secondary reducer 11. The hammer crushing method is suitable for crushing brittle materials with a moisture content of less than 12% and a compressive strength of less than 120MPa.

[0036] Example 9: The difference between it and Example 1 to Example 8 is that: Figure 1 As shown, a scraper 26 is provided on the top of the sampler 1 .

[0037] Example 10: The difference between it and Example 1 to Example 9 is that: Figure 1 As shown, the device also includes a controller, and the sampler 1, the sampling belt conveyor 2, the first-level reducer 9, the second-level reducer 10, the discarded sample belt conveyor 17, and the motor 22 are all electrically connected to the controller.

[0038] As needed, the various pipelines and equipment of the belt-conveyed coal online sampling and preparation integrated device may also be equipped with conventional valves, thermometers, and pressure gauges known in the art based on production needs. The controller is a DCS controller, which may be an Emerson DeltaV controller.

[0039] The above technical features constitute the embodiments of the present invention, which have strong adaptability and implementation effect. Non-essential technical features can be added or removed according to actual needs to meet the requirements of different situations.

[0040] The use process of the embodiment of the present invention is as follows: first, the sampler 1 scrapes the entire cross-section of the coal conveyor belt (coal conveying system) through the scraper 26 to obtain the coal sample (hereinafter referred to as the coal sample), and the coal sample is then lifted to a high position by the sampling belt conveyor 2; then, the coal sample enters the primary crusher 8 through the first sample delivery pipeline 4 for the first crushing process, and a part of the coal sample after the crushing process enters the full moisture box 20 for sample storage through the eleventh sample delivery pipeline 21, and the other part of the coal sample enters the primary reducer 9 for the first reduction process through the fifth sample delivery pipeline 12; then, the coarse-grained coal sample after the first reduction process enters the discarded sample tank 16 for temporary storage through the eighth sample delivery pipeline 15 and the fourth sample delivery pipeline 7 in turn, and the first reduction process is completed. The processed fine coal sample enters the secondary crusher 10 through the sixth sample pipeline 13 for secondary crushing, and the coal sample after the secondary crushing enters the secondary reducer 11 through the seventh sample pipeline 14 for secondary reduction; again, the coarse coal sample after the secondary reduction enters the discarded sample tank 16 through the fourth sample pipeline 7, and all discarded samples in the discarded sample tank 16 enter the discarded sample belt conveyor 17 through the ninth sample pipeline 18, and the discarded sample belt conveyor 17 lifts all discarded samples to a height above the coal conveying belt, and the discarded samples are returned to the coal conveying belt (coal conveying system) through the tenth sample pipeline 19; finally, the fine coal sample after the secondary reduction enters the sample retention box 3 through the third sample pipeline 6 for sample storage.

Claims

1. An integrated device for online sampling and preparation of belt-conveyed coal, characterized in that It includes a sampler, a sampling belt conveyor, a sample preparation device, a sample retention box, and a recovery device. A first sample delivery pipeline is fixedly connected between the bottom discharge port of the sampler and the feed port of the sampling belt conveyor, and a second sample delivery pipeline is fixedly connected to the discharge port of the sampling belt conveyor. A sample preparation device is correspondingly provided at the discharge port of the second sample delivery pipeline. A third sample delivery pipeline is fixedly connected to the first discharge port of the sample preparation device, and a sample retention box is correspondingly provided at the discharge port of the third sample delivery pipeline. A fourth sample delivery pipeline is fixedly connected between the second discharge port of the sample preparation device and the feed port of the recovery device.

2. The integrated online sampling and sample preparation device for belt conveyor type coal according to claim 1 is characterized in that The sample preparation device includes a first-level crusher, a first-level reducer, a second-level crusher, and a second-level reducer. The second sample pipeline outlet is correspondingly provided with a first-level crusher, the bottom outlet of the first-level crusher is fixedly connected to the fifth sample pipeline, the fifth sample pipeline outlet is correspondingly provided with a first-level reducer, the first bottom outlet of the first reducer is fixedly connected to the sixth sample pipeline, the sixth sample pipeline outlet is correspondingly provided with a second-level crusher, the bottom outlet of the second-level crusher is fixedly connected to the seventh sample pipeline, the seventh sample pipeline outlet is correspondingly provided with a second-level reducer, and the first bottom outlet of the second reducer is fixedly connected to the third sample pipeline.

3. The integrated online sampling and sample preparation device for belt conveyor type coal according to claim 2 is characterized in that An eighth sample delivery pipeline is fixedly connected between the second discharge port at the bottom of the first-stage reducer and the fourth sample delivery pipeline.

4. The integrated online sampling and sample preparation device for belt-conveyed coal according to claim 2 or 3, characterized in that The recovery device includes a discarded sample tank and a discarded sample belt conveyor. A fourth sample delivery pipeline is fixedly connected between the second discharge port at the bottom of the secondary reducer and the discarded sample tank. A ninth sample delivery pipeline is fixedly connected between the discharge port at the bottom of the discarded sample tank and the feed port of the discarded sample belt conveyor. A tenth sample delivery pipeline is fixedly connected to the discharge port of the discarded sample belt conveyor.

5. The integrated online sampling and sample preparation device for belt conveyor type coal according to claim 4 is characterized in that It also includes a full moisture tank. The fifth sample delivery pipeline is fixedly connected to the eleventh sample delivery pipeline, and the full moisture tank is correspondingly provided on the discharge port of the eleventh sample delivery pipeline.

6. The integrated online sampling and sample preparation device for belt conveyor type coal according to claim 5 is characterized in that The first sample pipeline, the second sample pipeline, the third sample pipeline, the fourth sample pipeline, the fifth sample pipeline, the sixth sample pipeline, the seventh sample pipeline, the eighth sample pipeline, the ninth sample pipeline, the tenth sample pipeline and the eleventh sample pipeline are all inclined pipelines with the feed port higher than the discharge port.

7. The integrated online sampling and sample preparation device for belt-conveyed coal according to claim 6 is characterized in that The heights of the feed ports of the sampling belt conveyor and the discarded sample belt conveyor are both lower than the discharge ports.

8. The integrated on-line sampling and preparation device for belt-conveyed coal according to claim 2, 3 or 5, characterized in that Both the primary crusher and the secondary crusher are equipped with a crushing device, which includes a motor, a transmission shaft, a hammer head, and a screen plate at the bottom of the hammer head.

9. The integrated on-line sampling and sample preparation device for belt-conveyed coal according to claim 1, 2, 3, 5, 6 or 7, characterized in that A scraper is provided on the top of the sampler.

10. The integrated online sampling and sample preparation device for belt-conveyed coal according to claim 9, characterized in that The utility model also includes a controller; the sampler, the sampling belt conveyor, the first-stage reducer, the second-stage reducer, the discarded sample belt conveyor and the motor are all electrically connected to the controller.

Images