Belt purging automatic control system

Abstract

The utility model discloses an automatic belt blowing control system which comprises a blowing device arranged below a return section of a conveying belt and a belt speed detection device arranged on the return section of the conveying belt. The air supply source is connected with the purging device; the control device is connected with the air supply source and the belt speed detection device, and the control device controls the working state of the air supply source according to signals detected by the belt speed detection device. The control device controls the working state of the air supply source according to a signal detected by the belt speed detection device, including interlocking actions such as starting or stopping or delaying or alarming of the air supply source, so that the purging device can change the working state according to conditions, automatic control of belt purging is realized, and the working efficiency is improved. Interlocking of the conveying belt and the purging system is achieved, reliability is high, and operation is easy.

Description

Technical Field

[0001] This utility model relates to the field of belt conveyor equipment technology, and in particular to an automatic control system for belt blowing. Background Technology

[0002] In steel plants, a large number of belt conveyors undertake transportation tasks. In the raw material transportation link, they transport various raw materials such as coal powder, limestone, and iron ore from warehouses or ships to the production line. In the intermediate production transportation link, they transport molten iron to the continuous casting machine, etc. In the waste transportation link, they transport ironmaking slag from the steel plant to the designated site.

[0003] Steel mills have a large number of conveyor belts, long transport distances, and complex types of transported materials with varying degrees of adhesion. These belts can randomly detach during the return trip, causing severe dust accumulation in the surrounding area. This results in a dirty and dusty work environment, frequent replacement cycles for sweepers, and a large amount of manual cleaning. Some conveyor belts have low return heights, making manual cleaning unsafe and sometimes forcing the machine to be stopped for cleaning, which reduces production efficiency. Utility Model Content

[0004] The purpose of this utility model is to address the aforementioned shortcomings and defects of the existing technology by providing an automatic belt cleaning control system. This system automatically controls the cleaning system through a detection instrument, achieving interlocking between the belt and the cleaning system. It is highly reliable and easy to operate, thus solving the above-mentioned problems.

[0005] The technical problem solved by this utility model can be achieved by the following technical solution:

[0006] An automatic belt cleaning control system includes:

[0007] A purging device installed below the return section of the conveyor belt.

[0008] A belt speed detection device installed on the return section of the conveyor belt;

[0009] The air supply source connected to the purging device;

[0010] A control device connected to the air supply source and belt speed detection device controls the working state of the air supply source based on the signal detected by the belt speed detection device.

[0011] In a preferred embodiment of this utility model, controlling the working state of the gas supply source includes controlling the start, stop, delay, or alarm of the gas supply source.

[0012] In a preferred embodiment of the present invention, the purging device includes a purging air knife.

[0013] In a preferred embodiment of this utility model, the purging device is located on the side near the head chute, and the material purged by the purging device falls into the head chute.

[0014] In a preferred embodiment of this utility model, the purging air knife includes an air inlet, a buffer chamber, and an exhaust port. The air inlet adopts a large-diameter design to reduce pipeline losses. The buffer chamber is used to buffer air, making the exhaust from the exhaust port more uniform. The gap width of the exhaust port can be adjusted according to the site requirements, with an adjustment range of 0.5 to 5 mm.

[0015] In a preferred embodiment of this utility model, the air supply source includes a three-dimensional centrifugal fan, and the air supply source is connected to the purging device via a hose.

[0016] In a preferred embodiment of the present invention, the three-dimensional flow centrifugal fan includes a head assembly, an impeller, a volute, and a drive assembly. The impeller is driven to rotate by the drive assembly. The impeller adopts a three-dimensional flow design and is made of high-strength aluminum alloy, chromium-nickel alloy steel, or titanium alloy. The impeller is surrounded by a volute, which is made of welded or cast parts.

[0017] In a preferred embodiment of the present invention, the driving component includes a drive motor.

[0018] In a preferred embodiment of the present invention, the drive motor includes a main shaft, a stator, a drive end bearing, a non-drive end bearing, a motor housing, and a cooling fan, wherein the cooling fan is disposed on the end of the main shaft away from the impeller.

[0019] In a preferred embodiment of the present invention, the belt speed detection device includes a speed sensor fixed on one side of the return roller on the return section of the conveyor belt, and a detection plate corresponding to the speed sensor is provided on the return roller.

[0020] By adopting the above technical solution, compared with the prior art, the control device of this utility model controls the working state of the air supply source based on the signal detected by the belt speed detection device, including controlling the start, stop, delay, or alarm of the air supply source and other interlocking actions. This allows the purging device to change its working state according to the situation, realizing automatic control of belt purging. It achieves interlocking between the conveyor belt and the purging system, resulting in high reliability, simple operation, and effectively solving the problem of material carryover on the belt during return trips. It greatly reduces the cost and safety issues of manual cleaning, while extending the life of the cleaner and the belt, improving the effective transport efficiency of the belt, and reducing frictional resistance loss and unstable operation caused by material carryover during return trips. In addition, the purging device of this utility model uses purging air knives for purging, with the exhaust port coinciding with the width of the belt, ensuring uniform exhaust and eliminating dead zones in the middle, thus solving the problems of missed purging and repeated purging. Furthermore, the purging device of this utility model includes a three-dimensional centrifugal fan, effectively solving the problems of low efficiency, small flow rate, and low wind speed. At the same time, it has a wide operating range, solving the problem of mismatch between different air knives and fans. Moreover, the air blown out by the three-dimensional centrifugal fan is pressurized and heated by the fan, which has the function of auxiliary heating of the material, reducing the moisture in the material and reducing the difficulty of purging. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the overall structure of one embodiment of the present invention.

[0023] Figure 2 This is a cross-sectional view of a three-dimensional flow centrifugal fan according to an embodiment of this utility model.

[0024] Figure 3 This is a schematic diagram of the installation of the blower blade according to one embodiment of the present invention.

[0025] Figure 4 yes Figure 1 A magnified view of section I.

[0026] In the diagram: 1. Three-dimensional centrifugal fan; 2. Hose; 3. Purge device; 4. Head roller; 5. Conveyor belt; 6. Head chute; 7. Return roller; 8. Belt speed sensor; 9. Automatic control system; 100. Head assembly; 200. High-speed motor; 101. Impeller; 102. Volute; 103. Locking nut; 201. High-speed main shaft; 202. Stator; 230. Drive end bearing; 204. Motor housing; 205. Non-drive end bearing; 206. Cooling fan; 301. Air inlet; 302. Buffer chamber; 303. Exhaust port; 401. Bracket; 402. U-bolt; 403. Nut; 404. Support leg; 405. Clamp; 501. Bracket; 502. Detection plate. Detailed Implementation

[0027] Preferred embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While preferred embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention will be thorough and complete, and will fully convey the scope of the present invention to those skilled in the art.

[0028] The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular forms “a,” “the,” and “the” used in this invention and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0029] It should be understood that although the terms "first," "second," "third," etc., may be used in this invention to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this invention, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Thus, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0030] See Figures 1 to 4 The automatic belt cleaning control system shown includes a cleaning device 3, a belt speed detection device 8, an air supply source 1, and a control device 9.

[0031] The purging device 3 is located below the return section of the conveyor belt 5. In this embodiment, the purging device 3 includes a purging air knife. The purging device 3 is located on the side near the head chute 6. The material purged by the purging device 3 falls into the head chute 6. The conveyor belt 5 is driven by the head roller 4 to pour the material into the head chute 6. The purging air knife includes an air inlet 301, a buffer chamber 302, and an exhaust port 303. The air inlet 301 adopts a large-diameter design to reduce pipeline losses. The buffer chamber 302 is used to buffer air, making the exhaust from the exhaust port 303 more uniform. The gap width of the exhaust port 303 can be adjusted according to the site requirements, with an adjustment range of 0.5 to 5 mm. The purging air knife is placed on the bracket 401 and secured with U-bolts 402 and nuts 403. The other side of the bracket 401 is connected to the support leg 404. The purging device 3 is connected to the air supply source 1 through a hose 2. The hose 2 is a high-temperature resistant hose and is connected to the purging air knife through a clamp 405.

[0032] In this embodiment, the air supply source 1 is a three-dimensional flow centrifugal fan. The three-dimensional flow centrifugal fan includes a head assembly 100, an impeller 101, a volute 103, and a drive assembly. The impeller 101 is driven to rotate by the drive assembly. The impeller 101 adopts a three-dimensional flow design. The impeller 101 is made of high-strength aluminum alloy, chromium-nickel alloy steel, or titanium alloy. The impeller 101 is surrounded by the volute 103, which is made of welded or cast parts. The gas flows axially from the head assembly 100, passes through the high-speed rotation of the impeller 101, and the gas pressure and temperature increase. After passing through the volute 103, the gas is collected in a 360° circumferential direction and enters the hose 2 along the volute outlet.

[0033] Preferably, the drive assembly includes a drive motor 200, which includes a main shaft 201, a stator 202, a drive-end bearing 203, a non-drive-end bearing 204, a motor housing 204, and a cooling fan 206. The cooling fan 206 is located at the end of the main shaft 201 away from the impeller 101 and adopts a coaxial fan structure, which features a compact structure and convenient connection. The drive-end bearing 203 and the non-drive-end bearing 204 are respectively arranged at both ends of the main shaft 201, providing support.

[0034] The belt speed detection device 8 is installed on the return section of the conveyor belt 5. In this embodiment, the belt speed detection device 8 is controlled by a PLC control device 9, which is connected to the air supply source 1 and the belt speed detection device 8. The control device 9 controls the working state of the air supply source 1 based on the signal detected by the belt speed detection device 8. Preferably, controlling the working state of the air supply source includes controlling the start, stop, delay, or alarm of the air supply source. The belt speed detection device 8 includes a speed sensor fixed to one side of the return roller 7 on the return section of the conveyor belt 5 by a bracket 501. The return roller 7 is provided with a detection plate 502 corresponding to the speed sensor.

[0035] The control device 9 of this invention controls the working state of the air supply source 1 based on the signal detected by the belt speed detection device 8. This includes controlling the start, stop, delay, or alarm of the air supply source 1, allowing the purging device 3 to change its working state according to the situation. This achieves automatic control of belt purging, interlocking the conveyor belt 5 with the purging system, ensuring high reliability and simple operation. It effectively solves the problem of material carryover on the belt during return trips, greatly reducing manual cleaning costs and safety issues. It also extends the lifespan of the cleaner and the belt, improves the effective transport efficiency of the belt, and reduces frictional resistance losses and unstable operation caused by material carryover during return trips. Furthermore, the purging device 3 of this invention uses purging air knives for purging, with the exhaust port coinciding with the belt width, ensuring uniform exhaust and eliminating dead zones, thus solving the problems of missed or repeated purging. Additionally, the purging device 3 includes a three-dimensional centrifugal fan, effectively solving the problems of low efficiency, small flow rate, and low wind speed. It also has a wide operating range, resolving the problem of mismatch between different air knives and the fan. Moreover, the air blown out by the three-dimensional centrifugal fan is pressurized and heated by the fan, which has the function of auxiliary heating of the material, reducing the moisture in the material and reducing the difficulty of purging.

[0036] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0037] In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0038] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0039] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application.

[0040] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An automatic belt cleaning control system, characterized in that, include: A purging device installed below the return section of the conveyor belt. A belt speed detection device installed on the return section of the conveyor belt; The air supply source connected to the purging device; A control device connected to the air supply source and belt speed detection device controls the working state of the air supply source based on the signal detected by the belt speed detection device.

2. The automatic belt cleaning control system according to claim 1, characterized in that, Control the working status of the gas supply source, including controlling the start, stop, delay, or alarm of the gas supply source.

3. The automatic belt cleaning control system according to claim 1, characterized in that, The purging device includes a purging air knife.

4. The automatic belt cleaning control system according to claim 3, characterized in that, The purging device is located on one side near the head chute, and the material purged by the purging device falls into the head chute.

5. The automatic belt cleaning control system according to claim 3, characterized in that, The purging air knife includes an air inlet, a buffer chamber, and an exhaust port. The air inlet adopts a large-diameter design to reduce pipeline losses. The buffer chamber is used to buffer air, making the exhaust from the exhaust port more uniform. The gap width of the exhaust port can be adjusted according to site requirements, with an adjustment range of 0.5 to 5 mm.

6. The automatic belt cleaning control system according to claim 1, characterized in that, The air supply source includes a three-dimensional centrifugal fan, and the air supply source is connected to the purging device via a hose.

7. The automatic belt cleaning control system according to claim 6, characterized in that, The three-dimensional flow centrifugal fan includes a head assembly, an impeller, a volute, and a drive assembly. The impeller is driven to rotate by the drive assembly. The impeller adopts a three-dimensional flow design and is made of high-strength aluminum alloy, chromium-nickel alloy steel, or titanium alloy. The impeller is surrounded by a volute, which is made of welded or cast parts.

8. The automatic belt cleaning control system according to claim 7, characterized in that, The drive component includes a drive motor.

9. The automatic belt cleaning control system according to claim 8, characterized in that, The drive motor includes a main shaft, a stator, a drive end bearing, a non-drive end bearing, a motor housing, and a cooling fan. The cooling fan is located on the end of the main shaft away from the impeller.

10. The automatic belt cleaning control system according to claim 1, characterized in that, The belt speed detection device includes a speed sensor fixed on one side of the return roller on the return section of the conveyor belt, and a detection plate corresponding to the speed sensor is provided on the return roller.

Images