CN109607109B

CN109607109B - Material conveying system

Info

Publication number: CN109607109B
Application number: CN201811584937.2A
Authority: CN
Inventors: 郗洪涛; 王立德; 任淑峰; 左德刚; 王坤; 蒋巍; 李进
Original assignee: China Shenhua Energy Co Ltd; Shenhua Huanghua Port Co Ltd
Current assignee: Guoneng Huanghua Port Co ltd; China Shenhua Energy Co Ltd
Priority date: 2018-12-24
Filing date: 2018-12-24
Publication date: 2020-08-18
Anticipated expiration: 2038-12-24
Also published as: CN109607109A

Abstract

The invention relates to the field of material conveying, and discloses a material conveying system which comprises an annular conveying belt, a receiving device, a scraper and a recovery container, wherein the receiving device is arranged below the front end of the annular conveying belt and used for receiving materials conveyed by the annular conveying belt, the scraper is arranged below the annular conveying belt and used for scraping materials adhered to the annular conveying belt, the recovery container is used for containing the materials scraped by the scraper and communicated with a water supply pipeline, a stirring component used for stirring the materials in the recovery container and water provided by the water supply pipeline to form fluid is arranged in the recovery container, a pump body used for conveying the fluid in the recovery container to the receiving device is arranged in the recovery container, and the recovery pipeline is connected between the pump body and the receiving device. The material conveying system provided by the invention can recycle and utilize the materials scraped by the scraper, thereby avoiding environmental pollution and reducing the labor intensity of workers.

Description

Material conveying system

Technical Field

The invention relates to the field of material conveying, in particular to a material conveying system.

Background

In the process of conveying coal by the belt conveyor, after the coal powder is thrown out at the head (end point in the running direction) of the conveyor belt, a layer of coal powder is inevitably adhered to the surface of the conveyor belt, and after the coal powder passes through the head scraper, coal powder particles on the surface of the conveyor belt are scraped off and fall onto the ground to cause dust raising, so that environmental pollution is caused. The dust fall that present trade generally adopted presses down the dirt measure is to the buggy watering on the conveyer belt to increase the water content of buggy, play the dust fall and press down the effect of dirt, however, can cause the increase of return stroke area coal volume simultaneously, but also have a large amount of sewage, so lead to a large amount of buggy of conveyer belt head return stroke belt and water to be scraped down by the scraper, the mixture of the buggy of scraping and water does not have the department and discharges, has caused environmental pollution, and needs a large amount of manual works to clear up.

Disclosure of Invention

The invention aims to provide a material conveying system which can recover and utilize materials scraped by a scraper, so that environmental pollution is avoided, and the labor intensity of workers is reduced.

In order to achieve the above object, the present invention provides a material conveying system, which includes an endless conveyor belt, a receiving device disposed below a front end of the endless conveyor belt for receiving a material conveyed by the endless conveyor belt, a scraper disposed below the endless conveyor belt for scraping the material adhered to the endless conveyor belt, and a recovery container for containing the material scraped by the scraper, the recovery container being communicated with a water supply pipeline, and a stirring member for stirring the material in the recovery container and water supplied from the water supply pipeline to form a fluid, and a pump body for conveying the fluid in the recovery container to the receiving device are disposed in the recovery container, and a recovery pipeline is connected between the pump body and the receiving device.

Preferably, a first underground layer is formed below the ground below the endless conveyor belt, the recovery container is arranged on the first underground layer, and an opening penetrating to the first underground layer is formed on the ground corresponding to the recovery container; a guide funnel for guiding the material scraped by the scraper into the recovery container is provided between the endless conveyor belt and the recovery container through the opening.

Preferably, the receiving device comprises a head funnel extending from the ground into the space of the underground layer and a conveying mechanism for receiving the materials conveyed by the head funnel; the bottom of head funnel is provided with a plurality of respectively can with the delivery channel of head funnel intercommunication or closing, conveying mechanism establishes a plurality ofly delivery channel's export.

Preferably, the conveying path includes a first conveying path and a second conveying path, and a flap is provided at a connection position of a first inlet of the first conveying path and a second inlet of the second conveying path, the flap being rotatable between a first position closing the first inlet and opening the second inlet and a second position opening the first inlet and closing the second inlet.

Preferably, the recovery line comprises a first pipe section connected to the pump body and extending in a horizontal direction, a second pipe section extending in a horizontal direction between the endless conveyor belt and the ground above the opening of the head funnel, and a third pipe section passing through the ground to connect the first pipe section and the second pipe section, the first pipe section, the second pipe section and the third pipe section being connected to form a U-shaped structure, wherein the third pipe section is located on a side of the recovery container facing away from the funnel.

Preferably, the stirring component comprises a stirring wheel arranged at the bottom of the pump body and a flushing pipe connected with the water supply pipeline and arranged at the bottom of the recovery container, and a plurality of nozzles capable of spraying water are arranged on the flushing pipe.

Preferably, the recovery container is a cylindrical body, the pump body is disposed at a middle portion of the recovery container, the flushing pipe includes an annular pipe body disposed around the pump body along an inner side wall of the recovery container, the nozzle includes tubular nozzles disposed at intervals in a circumferential direction of the annular pipe body and opening toward the pump body, and an axial direction of the tubular nozzles is disposed obliquely toward a stirring direction of the agitating wheel with respect to a radial direction of the annular pipe body.

Preferably, the material conveying system comprises a control device, an electromagnetic valve for controlling water supply is arranged on the water supply pipeline, and the electromagnetic valve and a driving device for driving the endless conveying belt to move are connected with the control device, so that the control device can control the electromagnetic valve to be opened or closed according to the starting or stopping of the driving device.

Preferably, the material conveying system comprises a control device, and the pump body and the driving device for driving the endless conveyor belt to move are connected with the control device, so that the control device can control the start or stop of the pump body according to the start or stop of the driving device.

Preferably, the material conveying system comprises a detection device arranged at the recovery container for detecting the liquid level in the recovery container, and the detection device is connected with the control device, so that the control device can control the starting or stopping of the pump body according to the liquid level detected by the detection device.

In the technical scheme, the recovery container used for containing materials scraped by the scraper is arranged below the annular conveying belt, the recovery container is communicated with the water supply pipeline, the recovery container is internally provided with a stirring part used for stirring the materials in the recovery container and the water provided by the water supply pipeline to form fluid and a pump body used for conveying the fluid in the recovery container to the receiving device, and the recovery pipeline is connected between the pump body and the receiving device, so that the fluid conveyed to the receiving device from the recovery container can play a role of dust fall and dust suppression when the materials on the annular conveying belt are conveyed to the receiving device, the water content of the materials is increased, the water consumption for dust fall and dust suppression in the material transportation process is saved, the purposes of recovering and utilizing the materials scraped by the scraper are realized, the environmental pollution is avoided, and meanwhile, a large amount of manpower and material resources are not needed to be spent for cleaning the materials scraped by the scraper, the labor intensity of workers is reduced.

Additional features and advantages of the invention will be set forth in the detailed description which follows.

Drawings

FIG. 1 is a schematic illustration of a partial configuration of a material delivery system in accordance with a preferred embodiment of the present invention;

fig. 2 is a plan view of a recovery tank having an annular tube body with a tubular nozzle provided therein according to a preferred embodiment of the present invention.

Description of the reference numerals

An endless conveyor belt-2; a scraper-3; a recovery vessel-4; water supply line-G; a pump body-5; a first tube section-61; a second tube section-62; a third tube section-63; a guide funnel-7; a head funnel-8; an annular tube body-91; a tubular nozzle-92; -D, the ground; a first conveying path-P1; a second conveying path-P2; turning over a plate-B; a solenoid valve-F; detector-T, check valve-E.

Detailed Description

The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.

In the present invention, the use of directional terms such as "upper, lower, left, right" generally means upper, lower, left, right as viewed with reference to the accompanying drawings, unless otherwise specified; "inner and outer" refer to the inner and outer relative to the profile of the components themselves.

The invention provides a material conveying system, which comprises an annular conveying belt 2, a receiving device arranged below the front end of the annular conveying belt 2 and used for receiving materials conveyed by the annular conveying belt 2, a scraper 3 arranged below the annular conveying belt 2 and used for scraping the materials adhered to the annular conveying belt 2, and a recovery container 4 used for containing the materials scraped by the scraper 3, wherein the recovery container 4 is communicated with a water supply pipeline G, and a stirring component for stirring the materials in the recovery container 4 and the water provided by the water supply pipeline G to form fluid and a pump body 5 for conveying the fluid in the recovery container 4 to the receiving device are arranged in the recovery container 4, and a recovery pipeline is connected between the pump body 5 and the receiving device. The materials conveyed by the annular conveying belt 2 can be coal, and the pulverized coal on the annular conveying belt 2 is sprinkled for dust fall and dust suppression during conveying of the coal, so that the mixture of the coal and the water adhered to the annular conveying belt 2 is scraped by the scraper 3 and falls into the recovery container 4.

In the above technical solution, as shown in fig. 1, a recovery container 4 for containing the material scraped by the scraper 3 is arranged below the endless conveyor 2, the recovery container 4 is communicated with the water supply pipeline G, a stirring component for stirring the material in the recovery container 4 and the water provided by the water supply pipeline G to form a fluid and a pump body 5 for conveying the fluid in the recovery container 4 to the receiving device are arranged in the recovery container 4, the recovery pipeline is connected between the pump body and the receiving device, so that the fluid conveyed from the recovery container 4 to the receiving device can play a role of dust suppression and suppression when the coal on the endless conveyor 2 is conveyed to the receiving device, the water content of the coal is increased, the water consumption for dust suppression and suppression in the coal transportation process is saved, the purpose of recovering and utilizing the material scraped by the scraper 3 is realized, and environmental pollution is avoided, meanwhile, the coal-water mixture scraped by the scraper 3 is not required to be cleaned by a large amount of manpower and material resources, so that the labor intensity of workers is reduced.

In order to facilitate installation of the recovery container 4 and maintenance of the pump body 5 disposed in the recovery container 4, it is preferable that an underground floor is formed below the ground D below the endless conveyor 2, the recovery container 4 is disposed on the underground floor, an opening penetrating to the underground floor is formed at a position on the ground D corresponding to the recovery container 4, and a guide funnel 7 for guiding the material scraped by the scraper 3 into the recovery container 4 is disposed between the endless conveyor 2 and the recovery container 4 through the opening in order to ensure that the coal-water mixture scraped from the endless conveyor 2 by the scraper 3 can smoothly enter the recovery container 4 without being affected by external factors such as wind. As shown in fig. 1, the cross-section of the guide funnel 7 is preferably an inverted trapezoid, and one oblique side of the inverted trapezoid near the head funnel 8, which will be described below, may extend to the head funnel 8, such that the opening of the guide funnel 7 is made larger to better receive the coal-water mixture scraped by the scraper 3.

Wherein, preferably, the receiving device comprises a head funnel 8 extending from the ground surface D into the space of the underground layer and a conveying mechanism for receiving the materials conveyed by the head funnel 8, and the conveying mechanism can be a conveying belt. In order to conveniently convey materials to different positions, a plurality of conveying channels which can be communicated with or closed off from the head funnel 8 are arranged at the bottom of the head funnel 8, the conveying mechanism is arranged at outlets of the plurality of conveying channels, so that different conveying channels can be selected according to working requirements, and the conveying mechanism can receive coal materials discharged from the outlets of the conveying channels so as to convey the coal materials to the required positions.

As shown in fig. 1, the transfer passage includes a first transfer passage P1 and a second transfer passage P2, and a flap B is provided at a connection position of a first entrance of the first transfer passage P1 and a second entrance of the second transfer passage P2, the flap B being rotatable between a first position closing the first entrance and opening the second entrance and a second position opening the first entrance and closing the second entrance. The trend of the coal can be switched by rotating the turning plate B, namely the coal enters the first conveying channel P1 or enters the second conveying channel P2, the structure is simple, and the control is convenient.

Preferably, the recovery pipeline comprises a first pipe section 61 connected with the pump body 5 and extending along the horizontal direction, a second pipe section 62 extending along the horizontal direction between the endless conveyor belt 2 and the ground surface D to be above the opening of the head hopper 8, and a third pipe section 63 passing through the ground surface D to connect the first pipe section 61 and the second pipe section 62, the first pipe section 61, the second pipe section 62 and the third pipe section 63 are connected to form a U-shaped structure, wherein the third pipe section 63 is positioned on the side of the recovery container 4 facing away from the hopper 8, so that the recovery pipeline does not interfere with the receiving device, and since the second pipe section 62 of the recovery pipeline extends to be above the opening of the head hopper 8, when the flap B is in the first position closing the first inlet and opening the second inlet, the coal material conveyed on the endless conveyor belt 2 is fed into the second conveying channel P2, the recovery pipeline can send the fluid in the recovery container 4 to the coal entering the second conveying channel P2; when the flap B is in the second position for opening the first inlet and closing the second inlet, the coal material conveyed on the endless conveyor 2 is fed into the first conveying passage P1, and the recovery pipeline can deliver the fluid in the recovery container 4 to the coal entering the first conveying passage P1, so that the flap B, whether in the first position or in the second position, does not affect the delivery of the fluid in the recovery container 4 to the conveyed coal. In addition, a check valve E may be disposed on the recovery pipe, and as shown in fig. 1, the check valve E may be disposed at the bottom end of the third pipe section 63 connected to the first pipe section 61, so that it is convenient for a worker to open or close the check valve E.

In order to sufficiently mix the coal-water mixture in the recovery tank 4 to form a fluid, it is preferable that the agitating means include an agitating wheel provided at the bottom of the pump body 5 and a flushing pipe connected to the water supply line G and provided at the bottom of the recovery tank 4, the flushing pipe being provided with a plurality of nozzles capable of spraying water. Wherein, the pump body 5 can be a mud pump. Further, it is understood that the agitating means may include only an agitating wheel provided at the bottom of the pump body 5, or the agitating means may include only a flushing pipe connected to the water supply line G and provided at the bottom of the recovery tank 4, and the flushing pipe may be provided with a plurality of nozzles capable of spraying water.

And, in order to further increase the speed of mixing coal and water, as shown in fig. 2, preferably, the recovery container 4 is a cylindrical body, the pump body 5 is disposed at the middle of the recovery container 4, the flushing pipe includes an annular pipe body 91 disposed around the pump body 5 along the inner side wall of the recovery container 4, the nozzle includes tubular nozzles 92 disposed at intervals in the circumferential direction of the annular pipe body 91 and opened toward the pump body 5, so that the coal-water mixture between the pump body 5 and the annular pipe body 91 can be well agitated, and the axial direction of the tubular nozzles 92 is inclined toward the agitating direction of the agitating wheel with respect to the radial direction of the annular pipe body 91, i.e. the direction of the vortex formed by the plurality of tubular nozzles 92 is the same as the agitating direction of the agitating wheel at the bottom of the pump body 5, so that a large vortex can be formed, helping to stir up the coal settled at the bottom of the recovery vessel 4.

In addition, preferably, the material conveying system comprises a control device, the water supply pipeline G is provided with an electromagnetic valve F for controlling water supply, and the electromagnetic valve F and a driving device for driving the endless conveying belt 2 to move are connected with the control device, so that the control device can control the opening or closing of the electromagnetic valve F according to the starting or stopping of the driving device. Specifically, when the control device controls the driving device to drive the annular conveying belt 2 to convey the coal materials, the control device controls the electromagnetic valve F to be opened, and the water supply pipeline G injects water into the recovery container 4; when the control device controls the driving device to stop driving the annular conveying belt 2 to convey the coal materials, the control device controls the electromagnetic valve F to be closed, and the water supply pipeline G stops injecting water into the recovery container 4.

Preferably, the material conveying system comprises a control device, to which the pump body 5 and the drive means for driving the endless conveyor belt 2 in motion are connected, so that the control device can control the start or stop of the pump body 5 depending on the start or stop of the drive means. Specifically, the pump body 5 operates only during the period of time in which the endless conveyor 2 is conveying coal material, so as to ensure that the fluid conveyed from the recovery container 4 to the receiving device (for example, the above-mentioned head hopper 8) through the recovery pipeline can be sprinkled on the coal material received by the receiving device, and the functions of dust settling and dust suppression are achieved.

And, in order to ensure that there is enough water in the recovery container 4 to mix and stir the materials scraped by the scraper 3, it is further preferable that the material conveying system includes a detection device T provided at the recovery container 4 for detecting the liquid level in the recovery container 4, and the detection device T is connected to the control device so that the control device can control the start or stop of the pump body 5 according to the liquid level detected by the detection device T. Wherein, the detecting device T can be an ultrasonic radar. Specifically, when the control device receives the feedback that the liquid level in the recovery container 4 is at a high position from the detection device T, the control device controls the pump body 5 to be started so as to convey the fluid in the recovery container 4 to the receiving device; when the control device receives the feedback that the liquid level in the recovery container 4 is at the lower position from the detection device T, the control device controls the pump body 5 to stop.

In conclusion, the material conveying system can collect the coal-water mixture scraped by the scraper 3 from the return belt of the annular conveying belt 2 of the conveyor in a working state into the recovery container 4, stir the water provided by the water supply pipeline G and the recovery container 4 to form fluid, and convey the fluid into the head funnel 8 through the recovery pipeline by the pump body 5, so that the effect of dust fall and dust suppression is achieved when the coal material is conveyed to the head funnel 8 by the annular conveying belt 2, the water content of the coal is increased, the water consumption in the coal conveying process is saved, the purpose of recovering and utilizing the coal-water mixture scraped by the scraper is achieved, the environmental pollution is avoided, meanwhile, a large amount of manpower and material resources are not needed to clean the coal-water mixture scraped by the scraper, and the manual labor intensity is reduced.

The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, numerous simple modifications can be made to the technical solution of the invention, including combinations of the individual specific technical features in any suitable way. The invention is not described in detail in order to avoid unnecessary repetition. Such simple modifications and combinations should be considered within the scope of the present disclosure as well.

Claims

1. A material conveying system, characterized in that the material conveying system comprises an endless conveying belt (2), a receiving device arranged below the front end of the endless conveying belt (2) and used for receiving materials conveyed by the endless conveying belt (2), a scraper (3) arranged below the endless conveying belt (2) and used for scraping the materials adhered to the endless conveying belt (2), and a recovery container (4) used for containing the materials scraped by the scraper (3), the recovery container (4) is communicated with a water supply pipeline (G), a stirring component used for stirring the materials in the recovery container (4) and water provided by the water supply pipeline (G) to form fluid and a pump body (5) used for conveying the fluid in the recovery container (4) to the receiving device are arranged in the recovery container (4), and a recovery pipeline is connected between the pump body (5) and the receiving device.

2. The material conveying system according to claim 1, characterized in that a ground floor (D) below the endless conveyor belt (2) is formed with a ground floor, the recovery container (4) is disposed in the ground floor, and an opening penetrating to the ground floor is formed on the ground floor (D) at a position corresponding to the recovery container (4);

a guide funnel (7) for guiding the material scraped by the scraper (3) into the recovery container (4) is arranged between the endless conveyor belt (2) and the recovery container (4) through the opening.

3. A material conveying system according to claim 2, characterised in that the receiving device comprises a head funnel (8) extending from the ground (D) into the space of the underground level and a conveying mechanism for receiving material conveyed by the head funnel (8);

the bottom of head funnel (8) is provided with a plurality of respectively can with head funnel (8) intercommunication or closed transfer passage, conveying mechanism establishes a plurality of transfer passage's export.

4. The material conveying system according to claim 3, characterized in that the conveying channel comprises a first conveying channel (P1) and a second conveying channel (P2), a flap (B) being provided at the connection position of the first inlet of the first conveying channel (P1) and the second inlet of the second conveying channel (P2), the flap (B) being rotatable between a first position closing the first inlet and opening the second inlet and a second position opening the first inlet and closing the second inlet.

5. A material conveying system according to claim 3, characterised in that the recovery line comprises a first pipe section (61) connected to the pump body (5) and extending in a horizontal direction, a second pipe section (62) extending in a horizontal direction between the endless conveyor belt (2) and the ground (D) to above the opening of the head funnel (8), and a third pipe section (63) passing through the ground (D) to connect the first pipe section (61) and the second pipe section (62), the first pipe section (61), the second pipe section (62) and the third pipe section (63) being connected to form a U-shaped structure, wherein the third pipe section (63) is located on the side of the recovery container (4) facing away from the head funnel (8).

6. The material conveying system according to claim 1, characterized in that said stirring means comprise a stirring wheel arranged at the bottom of said pump body (5) and a flushing pipe connected to said water supply line (G) and arranged at the bottom of said recovery container (4), said flushing pipe being provided with a plurality of nozzles capable of spraying water.

7. The material conveying system according to claim 6, characterized in that the recovery tank (4) is a cylindrical body, the pump body (5) is provided in the middle of the recovery tank (4), the flushing pipe comprises an annular pipe body (91) provided around the pump body (5) along the inner side wall of the recovery tank (4), the nozzles comprise tubular nozzles (92) provided at intervals in the circumferential direction of the annular pipe body (91) and opening toward the pump body (5), and the axial direction of the tubular nozzles (92) is arranged obliquely toward the stirring direction of the stirring wheel with respect to the radial direction of the annular pipe body (91).

8. A material conveying system according to any one of claims 1-7, characterised in that the material conveying system comprises control means, on which a solenoid valve (F) is arranged for controlling the water supply, the solenoid valve (F) and drive means for driving the endless conveyor belt (2) in motion being connected to the control means, so that the control means can control the opening or closing of the solenoid valve (F) in dependence on the activation or deactivation of the drive means.

9. A material conveying system according to any one of claims 1-7, characterised in that the system comprises a control device, to which the pump body (5) and the drive device for driving the endless conveyor belt (2) in motion are connected, so that the control device can control the starting or stopping of the pump body (5) in dependence on the starting or stopping of the drive device.

10. A material conveying system according to claim 9, characterised in that it comprises detection means (T) arranged at the recovery tank (4) for detecting the level of liquid inside the recovery tank (4), said detection means (T) being connected to the control means so that the control means can control the activation or deactivation of the pump body (5) according to the level of liquid detected by the detection means (T).