CN218490726U

CN218490726U - Belt coal leakage monitoring device of belt conveyor

Info

Publication number: CN218490726U
Application number: CN202222562786.9U
Authority: CN
Inventors: 樊剑彬; 梁浩然; 郭世雄; 李晓青
Original assignee: Shangan Power Plant of Huaneng Power International Inc
Current assignee: Shangan Power Plant of Huaneng Power International Inc
Priority date: 2022-09-27
Filing date: 2022-09-27
Publication date: 2023-02-17
Anticipated expiration: 2032-09-27

Abstract

The utility model provides a belt conveyor belt runs coal monitoring devices, is including setting up baffle, the fixed pivot that sets up at the baffle top and setting up the support in return stroke section belt side between return stroke section belt and pay-off section belt, baffle and pivot all are perpendicular with the traffic direction of return stroke section belt, the pivot is parallel with return stroke section belt, the baffle lower part is close to return stroke section belt, support and belt conveyor's frame fixed connection, the pivot rotates with the support to be connected, be equipped with one end rather than fixed connection's pendulum piece in the pivot, the fixed position detecting element who is used for detecting pendulum piece other end position that is provided with on the support. When coal leakage occurs, the detection element sends out an alarm signal to remind an operator to check and process or stop the operation of the belt conveyor. Therefore the utility model discloses can find the coal that falls on the return stroke section belt to in time handle, thereby avoid extravagant and influence band conveyer's normal operating.

Description

Belt coal leakage monitoring device of belt conveyor

Technical Field

The utility model relates to a power plant's boiler fuel carries technical field, especially relates to a belt conveyor belt runs coal monitoring devices.

Background

Combustion in a power plant boiler requires that fuel be delivered to the combustion chamber of the boiler by means of the belt of a belt conveyor. The belt of the belt conveyor can be divided into two parts according to the action, namely an upper feeding section belt and a lower return section belt, but the phenomenon that coal falls onto the return section belt frequently occurs in the actual production process of the belt conveyor, which is called as coal running, so that waste is caused, and the purpose of environmental protection, energy conservation and consumption reduction is violated by the current vigorously advocated purpose. Meanwhile, after the coal falls onto the return belt, the coal can be adhered to the conveying roller at the end of the belt conveyor along with the return belt, and the transmission between the conveying roller and the belt can be obstructed in serious cases, so that the normal operation of the belt conveyor is influenced.

Patent application with publication number CN103046954B discloses a coal leakage preventing device for a belt conveyor, which comprises a coal blocking plate arranged above a belt and used for blocking coal blocks. This application has reduced the speed of the coal cinder that band conveyer carried, has reduced the atress area of coal cinder moreover, has reduced the coal cinder and has been collided garrulous possibility to can improve the lump coal rate of coal cinder, but can't monitor the coal that falls on the band conveyer return section.

The patent application with the publication number of CN114194751A discloses a belt cleaning device for a belt conveyor, the phenomenon that coal in the transportation process of a transportation structure blocks a transportation belt is cleaned through driving, the upper end and the lower end of the transportation structure extrude and scrape, and therefore maintenance and cleaning of the transportation belt are achieved, the phenomenon that the coal is carried by a return belt is avoided, and the coal leakage cannot be monitored. In addition, the return belt is subjected to resistance when being cleaned, so that the conveying efficiency of the belt conveyor is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a band conveyer belt runs coal monitoring devices for in time discover to fall the coal on the return stroke section belt, so that in time handle, avoid extravagant and influence band conveyer's normal operating.

In order to achieve the above object, the utility model adopts the following technical scheme:

the utility model provides a belt conveyor belt runs coal monitoring devices, is including setting up baffle, the fixed pivot that sets up at the baffle top and setting up the support in return stroke section belt side between return stroke section belt and pay-off section belt, baffle and pivot all are perpendicular with the traffic direction of return stroke section belt, the pivot is parallel with return stroke section belt, the baffle lower part is close to return stroke section belt, support and belt conveyor's frame fixed connection, the pivot rotates with the support to be connected, be equipped with one end rather than fixed connection's pendulum piece in the pivot, the fixed position detecting element who is used for detecting pendulum piece other end position that is provided with on the support.

Furthermore, the swinging sheet is vertically arranged, and the position detection element is close to the lower end of the swinging sheet.

Furthermore, the rotating shaft penetrates through the support, the swinging piece is arranged at the outer end of the rotating shaft, and the position detection element is arranged on the outer side of the swinging piece.

Further, fixed solid fixed ring that is provided with in the pivot, the support is fixed in the pivot below and is provided with the pin, pin and solid fixed ring are equipped with the extension spring, extension spring one end is hung in solid fixed ring's bottom, and the other end is hung on the pin.

Furthermore, the two supports are respectively arranged on two sides of the return belt, and the two supports are fixedly connected with the rack.

Furthermore, a magnet is arranged at one end, far away from the rotating shaft, of the swinging piece, and the position detection element is a reed switch.

Furthermore, a magnet is arranged at one end, away from the rotating shaft, of the swinging piece, and the position detection element is a linear Hall sensor.

The utility model discloses an actively the effect does:

1. the utility model discloses be equipped with baffle, pivot, pendulum piece and position detection component on band conveyer's return stroke section belt, be the tongue tube when position detection component takes place to run the coal, the tongue tube is triggered to give band conveyer's controller with triggering signal transmission, send alarm signal and remind operating personnel to inspect and handle, or stop the band conveyer operation. Therefore the utility model discloses can find the coal that falls on the return stroke section belt to in time handle, thereby avoid extravagant and influence band conveyer's normal operating.

2. The utility model discloses be equipped with solid fixed ring, pin and spring, can prevent that the baffle from because of band conveyer's vibration unexpected swing to prevent that the tongue tube from triggering by mistake.

3. When the position detection element is a linear Hall sensor, the controller can accurately control the coal running amount, so that the normal operation of the belt conveyor can be ensured, the downtime is reduced, and the waste of coal can be avoided.

Drawings

Fig. 1 is a perspective view of the present invention;

FIG. 2 is a perspective view of the present invention with the feeding section belt removed;

FIG. 3 is a partial enlarged view of part I in FIG. 2 in embodiment 1;

fig. 4 is a side view of the present invention;

FIG. 5 isbase:Sub>A sectional view taken along line A-A of FIG. 4 in example 1;

FIG. 6 isbase:Sub>A sectional view taken along line A-A of FIG. 4 in example 2;

in the figure:

1. a conveying roller; 2. a feeding section belt; 3. a return section belt; 4. a rotating shaft; 5. a baffle plate; 6. a support; 7. a position detection element; 8. arranging a sheet; 9. a frame; 10. a magnet; 11. a fixing ring; 12. a tension spring; 13. a pin.

Detailed Description

For convenience of description, in the following description, a direction coinciding with the moving direction of the return belt 3 is "longitudinal", a direction perpendicular to the moving direction of the return belt 3 in a horizontal plane is "lateral", and the direction of the bracket 6 is "forward" with respect to the return belt 3.

Example 1

In fig. 1, the conveying roller 1 rotates counterclockwise as viewed from the front of the conveying roller 1.

As shown in fig. 1 to 5, a belt coal leakage monitoring device for a belt conveyor comprises a rectangular baffle 5 transversely arranged between a return belt 3 and a feeding belt 2, a transverse rotating shaft 4 welded on the top of the baffle 5, and two brackets 6 respectively arranged on the front side and the rear side of the return belt 3. The baffle 5 is perpendicular to the running direction of the return belt 3, and the bottom of the baffle 5 is close to the return belt 3 and has a gap with the return belt 3. The two brackets 6 are respectively fixedly connected with the frames 9 at the front side and the rear side of the belt conveyor through screws. The two brackets 6 are symmetrically arranged by taking the return belt 3 as a center, and the two brackets 6 are respectively fixedly connected with one side corresponding to the rack 9 through screws. The two ends of the rotating shaft 4 are respectively connected with the corresponding support 6 in a penetrating and rotating mode, the rotating shaft 4 is provided with a vertical swing piece 8, the upper end of the vertical swing piece is fixedly connected with the rotating shaft 4, the two ends of the swing piece 8 are arc-shaped, and the support 6 is fixedly provided with a position detection element 7 used for detecting the position of the lower end of the swing piece 8 at the position corresponding to the lower end of the swing piece 8.

The swing piece 8 is arranged at the front end of the rotating shaft 4, and the position detection element 7 is arranged in front of the swing piece 8. The support 6 on the front side is welded with a vertical end plate, and the detection element 7 is fixedly connected with the end plate.

A magnet 10 is arranged in front of the swing piece 8 close to the lower end, the position detection element 7 is a reed pipe fixedly connected with the end plate, and the reed pipe is close to the magnet 10.

When the belt conveyor runs normally, coal is conveyed to a combustion chamber of the boiler leftwards through the feeding section belt 2 to provide fuel for the boiler. When the coal leakage occurs, the coal falls on the left part of the return belt 3 and is conveyed to the right along with the return belt 3.

When the coal passes through the position of the baffle 5 and the coal is higher than the gap between the baffle 5 and the return belt 3, the coal pushes the lower part of the baffle 5, so that the baffle 5 rotates anticlockwise around the rotating shaft 4, the magnet 10 at the lower end of the swinging piece 8 is far away from the reed pipe, the reed pipe is triggered, a trigger signal is transmitted to a controller of the belt conveyor, and an alarm signal is sent to remind an operator to check and process or stop the belt conveyor from running. Therefore the utility model discloses can discover to fall to the coal on return stroke section belt 3 to in time handle, thereby avoid extravagant and influence band conveyer's normal operating.

Example 2

As shown in fig. 6, the present embodiment is different from embodiment 1 in that:

the cover has the solid fixed ring 11 of welding on it on pivot 4, support 6 is fixed to be provided with pin 13 in pivot 4 below, be equipped with extension spring 12 between pin 13 and the solid fixed ring 11, extension spring 12 upper end is hung in the corresponding hole that sets up in the bottom of solid fixed ring 11, and the lower extreme is hung on pin 13.

After the tension spring 12, the baffle 5 can be prevented from swinging accidentally due to the vibration of the belt conveyor, so that the reed switch can be prevented from being triggered by mistake.

Example 3

The present embodiment is different from embodiment 2 in that:

and a magnet 10 is arranged at one end of the swinging piece 8, which is far away from the rotating shaft 4, and the position detection element 7 is a Hall sensor.

A hall sensor is a sensor based on the hall effect. The linear Hall sensor is a Hall sensor with the output voltage and the external magnetic field intensity in a linear relation. Therefore, when the distance between the magnet 10 and the linear hall sensor is different, the output voltage of the linear hall sensor is different. Therefore, when the baffle 5 swings, the distance between the magnet 10 and the hall sensor can be obtained by detecting the output voltage of the hall sensor, and then the height of the coal falling on the return belt 3 can be obtained, and the coal leakage amount can be indirectly obtained.

Thus, when designed for a belt conveyor controller, an alarm value and a shutdown value may be set. When the coal leakage amount is small, the normal operation of the belt conveyor is not influenced, and the controller gives an alarm when the coal leakage amount is lower than an alarm value. When the coal leakage amount is large and reaches a stop value, the belt conveyor stops running. Therefore, the controller can accurately control the coal leakage amount, so that the normal operation of the belt conveyor can be ensured, the downtime is reduced, and the waste of coal can be avoided.

The above-mentioned embodiments are described in detail and specifically, so as to explain the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the same, but not to limit the present invention, and the scope of the present invention should not be limited by the embodiment, i.e. all equivalent changes or modifications made by the spirit of the present invention, for researchers or technicians in the field, within the structure of the present invention, the local modifications inside the system and the changes, transformations, etc. between the subsystems are still within the scope of the present invention. At present, the technical scheme of the application has been subjected to pilot plant test, namely small-scale experiment before large-scale mass production of products; after the pilot test is finished, the investigation for the use of the user is carried out in a small range, and the investigation result shows that the satisfaction degree of the user is higher; the preparation of products for formal production for industrialization, including intellectual property risk early warning research, has been set forth.

Claims

1. The utility model provides a belt conveyor belt runs coal monitoring devices, its characterized in that, including setting up baffle (5) between return stroke section belt (3) and pay-off section belt (2), fixed pivot (4) that set up at baffle (5) top and set up support (6) in return stroke section belt (3) side, baffle (5) and pivot (4) all are perpendicular with the traffic direction of return stroke section belt (3), pivot (4) are parallel with return stroke section belt (3), baffle (5) lower part is close to return stroke section belt (3), support (6) and belt conveyor's frame (9) fixed connection, pivot (4) rotate with support (6) and are connected, be equipped with one end and its fixed connection's pendulum piece (8) in pivot (4), fixed position detecting element (7) that are used for detecting pendulum piece (8) another end position that are gone up in support (6).

2. A belt conveyor belt coal leakage monitoring device according to claim 1, wherein the flap (8) is vertically disposed and the position detecting element (7) is near the lower end of the flap (8).

3. A belt coal leakage monitoring device of a belt conveyor according to claim 1, wherein the rotating shaft (4) penetrates through the bracket (6), the swinging piece (8) is arranged at the outer end of the rotating shaft (4), and the position detecting element (7) is arranged at the outer side of the swinging piece (8).

4. The belt coal leakage monitoring device of the belt conveyor according to claim 1, wherein a fixing ring (11) is fixedly arranged on the rotating shaft (4), a pin (13) is fixedly arranged below the rotating shaft (4) on the support (6), a tension spring (12) is arranged between the pin (13) and the fixing ring (11), one end of the tension spring (12) is hung at the bottom of the fixing ring (11), and the other end of the tension spring is hung on the pin (13).

5. The belt coal leakage monitoring device of the belt conveyor according to claim 1, wherein the number of the brackets (6) is two, and the two brackets (6) are respectively arranged on two sides of the return belt (3), and both brackets are fixedly connected with the frame (9).

6. The belt coal leakage monitoring device of the belt conveyor according to claim 1, wherein a magnet (10) is arranged at one end of the swinging piece (8) far away from the rotating shaft (4), and the position detection element (7) is a reed switch.

7. The belt coal leakage monitoring device of the belt conveyor according to claim 1, wherein a magnet (10) is arranged at one end of the swinging piece (8) far away from the rotating shaft (4), and the position detection element (7) is a linear Hall sensor.