CN216835550U

CN216835550U - Washing raw material conveying system

Info

Publication number: CN216835550U
Application number: CN202122855640.9U
Authority: CN
Inventors: 刘利波; 胡金良; 柳骁; 陈修奇
Original assignee: China Shenhua Energy Co Ltd
Current assignee: China Shenhua Energy Co Ltd
Priority date: 2021-11-19
Filing date: 2021-11-19
Publication date: 2022-06-28
Anticipated expiration: 2031-11-19

Abstract

The application provides a go into and wash raw materials conveying system, it includes the gross coal storehouse, sets up the screening plant in the low reaches in the gross coal storehouse, set up in the gross coal storehouse with first conveyor between the screening plant, set up and be in screening plant low reaches are used for accepting the multiunit second conveyor that the material was divided to the sieve of different particle sizes, wherein, in each first conveyor with each all be provided with the weight detector on the second conveyor, should go into and wash raw materials conveying system's first conveyor and second conveyor and be provided with the weight detector for the volume of the coal that the real-time detection gross coal storehouse got off and the coal volume of going to each sorting system.

Description

Washing raw material conveying system

Technical Field

The utility model belongs to the technical field of coal production, and particularly relates to a washing raw material transportation system.

Background

The raw coal preparation system of the coal preparation plant is usually equipped with a crusher, a classifying screen, a belt conveyor, a scale and the like to perform processing operations such as multistage crushing, screening, metering, conveying and the like on raw coal. The coal sieve system of present coal preparation factory generally exists because the raw coal contains the waste rock volume great, and the influence that mud ization is serious and moisture is higher, and raw coal granule meets water easy adhesion on traditional banana sieve, the phenomenon that the sieve mesh blockked up appears easily, and screening efficiency is lower, and traditional coal volume weighing measurement generally is the manual weighing method moreover, and the staff weighs coal through the platform scale, has the lower and degree of automation lower scheduling problem of measurement precision.

The utility model provides a washing raw material conveying system aiming at the technical problems.

SUMMERY OF THE UTILITY MODEL

In view of some or all of the above technical problems in the prior art, the present invention provides a washing raw material transportation system. The first conveying device and the second conveying device of the washing raw material conveying system are provided with weight detectors for detecting the quantity of coal falling from the raw coal bin and the quantity of coal going to each sorting system in real time.

According to the present invention there is provided a wash-in raw material transport system comprising:

the raw coal bin is arranged in the coal bin,

a screening device arranged downstream of the raw coal bin,

a first conveying device arranged between the raw coal bin and the screening device,

a plurality of sets of second conveying devices arranged downstream of the screening device for receiving screened materials of different particle sizes,

wherein each of the first and second conveying devices is provided with a weight detector.

In one embodiment, the first transport device is configured as a first belt conveyor, and the weight detector arranged on the first transport device is configured as a belt scale.

In one embodiment, a vibration coal feeding device is arranged between the first conveying device and the raw coal bin, and one raw coal bin is connected with a plurality of vibration coal feeding devices.

In one embodiment, the screening device is provided with a multi-stage relaxation screen.

In one embodiment, the screening device has a first galloping sieve and a second galloping sieve arranged at the lower end of the first galloping sieve at intervals, a second belt conveyor connected to the second conveying device is arranged above the first galloping sieve, a third belt conveyor connected to the second conveying device is arranged below the second galloping sieve, a third galloping sieve is connected between the first galloping sieve and the second galloping sieve, a fourth belt conveyor connected to the second conveying device is arranged above the third galloping sieve, and a third belt conveyor is arranged below the third galloping sieve, wherein the second belt conveyor, the third belt conveyor and the fourth belt conveyor are all provided with the weight detectors configured as belt scales.

In one embodiment, the first, second and third fly ash screens are all arranged in inclined type.

In one embodiment, the screening device comprises:

the screening device comprises a screening device body,

a first inlet disposed on the screening device body, wherein the first and second fly screens are disposed at the first inlet,

A second inlet disposed on the sub-assembly body, wherein the third fly screen is disposed at the second inlet,

an outlet arranged at the lowermost end of the screening device body,

wherein the second inlet is lower than the first inlet.

In one embodiment, the screening device body is configured such that the first and second inlets and the outlet are both funnel-type connections.

In one embodiment, a scraper conveyor is arranged between the third belt conveyor and the screening device.

In one embodiment, the system comprises a plurality of the raw coal bins and a plurality of the first conveying devices, wherein each raw coal bin is used for connecting the plurality of the first conveying devices.

Compared with the prior art, the utility model has the advantages that: the first conveying device and the second conveying device of the washing raw material conveying system are provided with weight detectors for detecting the quantity of coal falling from the raw coal bin and the quantity of coal going to each sorting system in real time.

Drawings

Preferred embodiments of the present invention will be described in detail below with reference to the attached drawing figures, wherein:

FIG. 1 shows an influent feed transport system according to one embodiment of the present invention.

The figures are not drawn to scale.

Detailed Description

In order to make the technical solutions and advantages of the present invention more apparent, exemplary embodiments of the present invention are described in further detail below with reference to the accompanying drawings. It is clear that the described embodiments are only a part of the embodiments of the utility model, and are not exhaustive of all embodiments. And the embodiments and features of the embodiments may be combined with each other without conflict.

An embodiment of the present invention provides a washing raw material transportation system. As shown in fig. 1, the washing raw material transportation system includes a raw coal bunker 1, a screening device 2, a first conveyance device 3, and a second conveyance device. Wherein, the raw coal bin 1 is used for storing coal raw materials. The screening device 2 is arranged at the downstream of the raw coal bin 1 and is used for screening coal so as to divide the coal into screened coal with different particle sizes. The first conveying device 3 is arranged between the raw coal bin 1 and the screening device 2 and is mainly used for feeding the coal in the raw coal bin 1 to the screening device 2 for screening. The second conveying device is arranged at the downstream of the screening device 2 and is used for receiving screened materials with different particle sizes and conveying the screened materials to different destination bins. According to the present application, each of the first conveyor devices 3 and each of the second conveyor devices is provided with a weight detector 5 (the weight detector 5 is schematically shown in fig. 1 in some of the first conveyor devices 3 and each of the second conveyor devices, as an expression to be described). The first conveyor 3 and the second conveyor of the washing raw material conveying system are provided with weight detectors 5 for detecting the amount of coal falling from the raw coal bin 1 and the amount of coal going to each sorting system in real time.

The raw coal bunker 1 is constructed in a funnel shape, and is provided with a coal outlet 11 at the bottom thereof for discharging coal outwards. According to production needs, a plurality of raw coal bins 1 can be provided, and the raw coal bins 1 can be fixedly connected with one another. Fig. 1 of the present application illustrates two raw coal bunkers 1 as an example, but the present application does not limit the specific number of the raw coal bunkers 1, and may be one or a plurality of raw coal bunkers.

The bottom end of the coal outlet 11 is provided with a vibration coal feeding device 6. Each raw coal bunker 1 is provided with a plurality of vibration coal feeding devices 6 in a mode, and the variable-frequency coal feeding amount can be adjusted. In daily production operation, the centralized controller can manually adjust the motor frequency of the vibration coal feeding device 6 according to the coal quantity detection data of the raw materials and the rated processing capacity of each sorting system.

The coal passed through the vibrating coal feeder 6 is delivered to the first conveyor 3 through a coal delivery line. The first conveying device 3 is designed as a first belt conveyor. Wherein the weight detector 5 on the first conveyor 3 is configured as a belt scale, so that the detection is easy to implement.

The first conveying means 3 conveys the raw material further to the screening means 2. Wherein the screening device 2 is provided with a multi-stage tension sieve for multi-stage screening. The tension sieve adopts the sub-resonance principle to realize vibration, so that the power requirement required by the equipment is smaller. Meanwhile, the multi-stage relaxation sieve is used for sieving, the relaxation sieve utilizing relaxation motion can improve the sieving processing capacity, and the problem of sieve pore blockage can be effectively solved.

The screening device 2 comprises a screening device body 21, a first inlet 22, a second inlet 23, a first screen assembly 24 and a second screen assembly 25. Wherein the screening device body 21 is configured in the shape of a generally two funnel-like split body. The first inlet 22 is provided in the screening device body 21 at the opening of one of the funnel bodies. A second inlet 23 is also provided in the screening device body 21 at the opening of the other funnel. The second inlet 23 is lower than the first inlet 22. A first screen assembly 24 is provided at the first inlet 22 for receiving material from the first conveyor 3. And a second screen assembly 25 is positioned at the second inlet 23 for receiving the screened portion of material from the first screen assembly 24.

Specifically, the first screen assembly 24 includes a first tension screen and a second tension screen spaced at a lower end of the first tension screen. For example, the first sieve has a mesh size of 80mm and the second sieve has a mesh size of 6mm, e.g., the first screen assembly 24 is a double layer 3670 type of relaxation sieve. The incoming material is screened through the first and second expanded screens where it reaches the first inlet 22. Wherein the first fly screen is connected above to the second belt conveyor 41 of the second conveyor. That is, the material that did not pass through the first wire-tensioned screen is conveyed to the second belt conveyor 41. A third belt conveyor 42 connected to the second conveyor means beneath the second fly screen. That is, the material passing through the first and second sieves sequentially enters the inner cavity of the screening device body 21 and is conveyed to the third belt conveyor 42 through the outlet 26. Connected to the second screen assembly 25 between the first and second expanded screens. The second screen assembly 25 comprises a third expanded screen. That is, the materials passing through the first fly-over screen but not the second fly-over screen are conveyed to the third fly-over screen for re-screening, so as to improve the screening precision. The mesh size of the third fly-over screen is 6 mm. For example, the second screen assembly 25 is a single layer 30100 type relaxation screen. Above the third fly screen is connected to a fourth belt conveyor 43 of the second conveyor means. That is, material that does not pass through the third expanded screen is conveyed to the fourth belt conveyor 43. Connected below the third fly screen to a third belt conveyor 42. That is, material passing through the third fly screen is conveyed into the interior chamber of the screening device body 21 and through the outlet 26 to the third belt conveyor 42. A weight detector 5 configured as a belt scale is provided on each of the second belt conveyor 41, the third belt conveyor 42 and the fourth belt conveyor 43, for weighing the sieved materials of different particle sizes. Thus, the first sieve pre-sifts the fraction larger than 80mm, the second sieve pre-sifts the lower layer at 6mm, and the third sieve pre-sifts at 6 mm. After the pulverized coal in the raw coal bunker 1 is subjected to the dust removal treatment, the fine coal with the size fraction smaller than or equal to 6mm under the screen enters the fine coal bunker through a third belt conveyor 42, the raw coal with the size fraction larger than 6mm and smaller than or equal to 80mm between the first galloping screen and the third galloping screen enters a heavy medium shallow slot system for separation through a fourth belt conveyor 43, and the raw coal with the size fraction larger than 80mm enters a TDS dry separation system for separation through a second belt conveyor 41. Of course, the raw coal with the size fraction larger than 6mm can also be completely separated in the heavy medium shallow slot system.

The first screen assembly 24 and the second screen assembly 25 are of a slanted arrangement. Namely, the first tension sieve, the second tension sieve and the third tension sieve are all arranged in an inclined mode. And, the inclined bottom end of the first screen assembly 24 faces and is adjacent to the second screen assembly 25. This arrangement ensures that material falls easily, for example, from the first screen assembly 24 onto the second screen assembly 25.

A scraper conveyor 6 is arranged between the third belt conveyor 42 and the screening device 2. The scraper conveyor 6 is structurally located at the lower end of the outlet 26 of the screening device body 21 for receiving a portion of the material and conveying it to the third belt conveyor 42.

In the present application, the washing stock transport system comprises a plurality of raw coal silos 1 and a plurality of first conveyance means 3. Wherein, each raw coal bunker 1 is used for connecting a plurality of first conveying devices 3, and the raw coal bunker 1 is used for distributively conveying coal to the plurality of first conveying devices 3 for substantially equally distributing the coal. For example, in the embodiment of fig. 1, the coal of the first raw coal bunker 1 is divided into two paths and is respectively delivered to the two first conveyors 3, and the coal of the other raw coal bunker 1 is also divided into two paths and is respectively delivered to the two first conveyors 3. Each first conveyor 3 corresponds to one screening device 2.

In addition, the vibration coal feeding device 6 is connected to the first conveyor 3 through a first coal conveying line 7. The first conveying means 3 is connected to the screening means 2 by a second coal conveying line 8. At the lower end of the first screen assembly 24, a coal outlet pipe 9 is provided for connection to a second belt conveyor 41. And a coal drop tube 10 is provided at a lower end of the first screen assembly 24 for connection to a second screen assembly 25. Meanwhile, a coal dropping pipe 10' is provided at a lower end of the second screen assembly 25 for connection to the fourth belt conveyor 43. A coal outlet pipe 9' is arranged between the scraper conveyor 6 and the third belt conveyor 42 and is used for passing materials.

While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, the appended claims are intended to be construed to include preferred embodiments and all such variations and/or modifications as fall within the scope of the utility model, which are intended to be covered by the embodiments of the utility model.

Claims

1. A washing raw material transportation system, comprising:

the raw coal bin is arranged in the coal bin,

A screening device arranged downstream of the raw coal bin,

a plurality of groups of second conveying devices arranged at the downstream of the screening device and used for receiving screened materials with different particle sizes,

2. The incoming wash material transport system of claim 1, wherein the first conveyor is configured as a first belt conveyor and the weight detector disposed on the first conveyor is configured as a belt scale.

3. The incoming wash feed transport system of claim 2, wherein a vibratory coal feed is provided between the first transport device and the raw coal bin, and one raw coal bin is connected to a plurality of vibratory coal feeds.

4. The incoming wash raw material transport system of any one of claims 1 to 3, wherein the screening device is provided with a multi-stage relaxation screen.

5. The incoming wash feed transport system of claim 4, wherein the screening device has a first expanded screen and a second expanded screen spacedly disposed at a lower end of the first expanded screen, a second belt conveyor connected to the second conveyor above the first expanded screen, a third belt conveyor connected to the second conveyor below the second expanded screen, a third expanded screen connected between the first expanded screen and the second expanded screen, a fourth belt conveyor connected to the second conveyor above the third expanded screen, and a third belt conveyor below the third expanded screen, wherein the weight detectors configured as belt scales are disposed on the second belt conveyor, the third belt conveyor, and the fourth belt conveyor.

6. The wash-in raw material transport system of claim 5, wherein the first, second and third expanded screens are all arranged at an inclined angle.

7. The incoming wash feed stock transport system of claim 6, wherein the screening device comprises:

the screening device body is provided with a screening device body,

a first inlet disposed on the screening device body, wherein the first and second expanded screens are disposed at the first inlet,

a second inlet disposed on the sub-assembly body, wherein the third expanded screen is disposed at the second inlet,

an outlet disposed at a lowermost end of the screening device body,

wherein the second inlet is lower than the first inlet.

8. The wash-in raw material transport system of claim 7, wherein the screening device body is configured such that the first and second inlets and the outlet are both funnel-type connections.

9. The incoming wash feed stock transport system of claim 5, wherein a scraper conveyor is disposed between the third belt conveyor and the screening device.

10. The incoming wash feed transport system of any of claims 1 to 3, comprising a plurality of the raw coal bins and a plurality of the first conveyance devices, wherein each raw coal bin is adapted to be connected to a plurality of the first conveyance devices.