A device for alerting of a blade blockage

Abstract

The utility model discloses a kind of scraper blocking alarm device, comprising: limit block, connecting shaft, collision block, mounting bracket and travel switch, the connecting shaft is rotatably connected on the box side wall, the limit block is fixedly connected at the one end of the connecting shaft inside the box, connecting rod is fixedly connected on the side wall of the one side of the connecting shaft outside the box, the collision block is fixedly connected at the one end of the connecting rod away from connecting shaft, the mounting bracket is fixedly connected on the outer side wall of the box, the travel switch is correspondingly arranged with the collision block and fixedly connected on the inner top surface of the mounting bracket. When the coke powder accumulation in the box of scraper reaches a certain degree, the operation of scraper is stopped by collision block touching travel switch, avoid the operation of scraper under heavy load condition, improve the service life of scraper, reduce the failure rate of equipment, shorten the troubleshooting time of scraper, improve the utilization of scraper.

Description

Technical Field

[0001] This utility model belongs to the field of scraper conveyor technology, specifically relating to a scraper blockage alarm device. Background Technology

[0002] The coking and coking industry generates a large amount of coke dust. Dust removal is required at every stage of coking coal production, and the coke dust is transferred to specialized collection equipment for processing via a dust removal system. The equipment used in this transfer process is a scraper conveyor.

[0003] A scraper conveyor consists of: scraper blades, scraper chain, housing, front and rear sprockets, motor, and reducer roller drive chain. When material accumulates and blocks the scraper conveyor housing, the continuous discharge of coke powder into the housing by the ash discharge valve causes the coke powder to gradually accumulate. This increases the operating resistance of the scraper blades, eventually leading to the breakage of the scraper chain or reducer drive chain, thus damaging the scraper conveyor. Utility Model Content

[0004] To address some or all of the technical problems existing in the prior art, this utility model provides a scraper blockage alarm device, comprising: a limit block, a connecting shaft, a collision block, a mounting bracket, and a limit switch. The connecting shaft is rotatably connected to the side wall of the housing. The limit block is fixedly connected to one end of the connecting shaft located inside the housing. A connecting rod is fixedly connected to the side wall of the connecting shaft located outside the housing. The collision block is fixedly connected to the end of the connecting rod away from the connecting shaft. The mounting bracket is fixedly connected to the outer side wall of the housing. The limit switch is correspondingly arranged with the collision block and fixedly connected to the inner top surface of the mounting bracket.

[0005] Furthermore, the limiting block is cylindrical, and its installation height is located between the upper scraper and the lower scraper of the scraper conveyor.

[0006] Furthermore, the limiting block has several grooves evenly provided on its circumferential sidewall.

[0007] The scraper blockage alarm device of this utility model has the following advantages and beneficial effects:

[0008] By setting limit blocks, when the coke powder in the scraper conveyor box reaches a certain level, the limit blocks drive the collision block to touch the limit switch to stop the scraper conveyor from running. This avoids the scraper conveyor from running under heavy load conditions, improves the service life of the scraper conveyor, reduces the equipment failure rate, shortens the troubleshooting time of the scraper conveyor, and improves the utilization rate of the scraper conveyor. Attached Figure Description

[0009] 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 in the following description are only for further understanding of the embodiments of this utility model and constitute a part of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In the drawings:

[0010] Figure 1 This is a schematic diagram of the scraper blockage alarm device of this utility model;

[0011] Figure 2 This is a cross-sectional structural diagram of the limiting block of this utility model.

[0012] Explanation of reference numerals in the attached figures:

[0013] 1. Housing; 2. Limiting block; 3. Connecting shaft; 4. Collision block; 5. Mounting bracket; 6. Limit switch; 7. Connecting rod; 8. Scraper; 9. Groove. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0015] like Figures 1 to 2 As shown, the scraper blockage alarm device provided by this utility model includes: a limiting block 2, a connecting shaft 3, a collision block 4, a mounting bracket 5, and a limit switch 6. The connecting shaft 3 is rotatably connected to the side wall of the housing 1. The limiting block 2 is fixedly connected to one end of the connecting shaft 3 located inside the housing 1. A connecting rod 7 is fixedly connected to the side wall of the connecting shaft 3 located outside the housing 1. The collision block 4 is fixedly connected to the end of the connecting rod 7 away from the connecting shaft 3. The mounting bracket 5 is fixedly connected to the outer side wall of the housing 1. The limit switch 6 is correspondingly arranged with the collision block 4 and fixedly connected to the inner top surface of the mounting bracket 5.

[0016] As the amount of coke powder accumulated inside the scraper conveyor housing 1 increases, the upper layer of coke powder will come into contact with the limiting block 2. During the movement of the scraper 8, the coke powder will drive the limiting block 2 to rotate, which in turn will drive the connecting shaft 3 to rotate. This will cause the collision block 4 to rotate with the connecting shaft 3 until the collision block 4 comes into contact with the limit switch 6. The limit switch 6 will then control the scraper conveyor to stop working by cutting off the power and triggering an alarm. This prevents the scraper conveyor from operating under heavy load conditions, increases the service life of the scraper conveyor, reduces the failure rate of the equipment, shortens the troubleshooting time of the scraper conveyor, and improves the utilization rate of the scraper conveyor.

[0017] Preferably, the limiting block 2 is cylindrical, and the installation height of the limiting block 2 is located between the upper scraper 8 and the lower scraper 8 of the scraper conveyor.

[0018] By setting the limit block 2 to a cylindrical shape, the difficulty of rotating the limit block 2 is reduced, thereby improving the rotation sensitivity of the limit block 2 and preventing the limit block 2 from rotating due to excessive coke powder accumulation.

[0019] Preferably, the limiting block 2 has a plurality of grooves 9 evenly provided on its circumferential sidewall.

[0020] By setting a groove 9 on the circumferential sidewall of the limiting block 2, coke powder will enter the groove 9, thereby allowing the coke powder to exert a more stable pushing force on the limiting block 2, so that the limiting block 2 can more accurately detect the accumulation height of the coke powder.

[0021] It should be noted that, unless otherwise expressly specified and limited, the term "connection" or its synonyms should be interpreted broadly in this document. For example, "connection" can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal communication of two elements or the interaction between two elements. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. Furthermore, expressions such as "first" and "second" are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. At the same time, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. In addition, the terms "front," "rear," "left," "right," "upper," and "lower" in this document refer to the placement state shown in the accompanying drawings.

[0022] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A scraper blockage alarm device, installed on the side wall of the scraper conveyor housing, characterized in that, include: The enclosure comprises a limit block (2), a connecting shaft (3), a collision block (4), a mounting bracket (5), and a limit switch (6). The connecting shaft (3) is rotatably connected to the side wall of the housing (1). The limit block (2) is fixedly connected to one end of the connecting shaft (3) located inside the housing (1). A connecting rod (7) is fixedly connected to the side wall of the connecting shaft (3) located outside the housing (1). The collision block (4) is fixedly connected to one end of the connecting rod (7) away from the connecting shaft (3). The mounting bracket (5) is fixedly connected to the outer side wall of the housing (1). The limit switch (6) is correspondingly provided with the collision block (4) and fixedly connected to the inner top surface of the mounting bracket (5).

2. The scraper blockage alarm device according to claim 1, characterized in that, The limiting block (2) is cylindrical, and the installation height of the limiting block (2) is between the upper scraper (8) and the lower scraper (8) of the scraper conveyor.

3. The scraper blockage alarm device according to claim 2, characterized in that, The limiting block (2) has several grooves (9) evenly arranged on its circumferential sidewall.

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