Coal chute anti-blocking alarm device

Abstract

The utility model discloses a kind of coal falling hopper anti-blocking alarm device, belong to coal conveying technical field, comprising: coal hopper;Through the cooperation of above each device, in the utility model, by opening hole in coal hopper side and setting flap and inductive limit switch, initial signal can be accurately captured to block coal, as long as coal in coal pipe is accumulated to a certain degree to open flap, alarm can be triggered immediately, compared with traditional artificial inspection, greatly improve the timeliness and accuracy of detection, the device after modification not only can send alarm signal, but also can be with belt operation, unloader action realizes linkage, once detecting coal blockage, belt operation can be automatically stopped, prevent more coal from rushing in aggravating blockage, or by lifting unloader, change coal conveying path, simultaneously under the conveying of helical guide vane in anti-blocking mechanism, coal in coal hopper is discharged, avoid coal accumulation too much, leading to fault expansion, effectively guarantee coal conveying system safe and stable operation.

Description

Technical Field

[0001] This utility model belongs to the field of coal conveying technology, and in particular relates to a coal hopper anti-blocking alarm device. Background Technology

[0002] In a coal conveying system, the unloader and conveyor belt are the core hubs of the coal supply process. Their operating status directly affects the efficiency and stability of coal supply. Coal itself has sticky properties, and during the coal conveying process, it is very easy for caking to form in the coal drop pipe and coal hopper. As the caking continues to accumulate, the coal conveying resistance continues to increase. Once the amount of coal increases slightly, the coal will instantly clump together, leading to serious blockage. Especially during the rainy season, the air humidity rises sharply, the moisture content of the coal increases, and the stickiness is further enhanced, so the probability of coal blockage events rises sharply, which greatly threatens the reliability of coal supply.

[0003] Traditional manual inspection methods have significant limitations. Inspectors cannot monitor every critical node of the coal conveying system at all times, resulting in long inspection intervals and blind spots. This makes it difficult to detect coal blockages in their early stages, and by the time they are discovered, they are often quite serious, leading to a series of equipment damage problems, such as motors burning out due to overload and belts tearing due to uneven stress. Equipment failures not only increase high maintenance costs but also lead to long downtime for repairs, greatly affecting the continuity of production and resulting in huge economic losses.

[0004] Therefore, this utility model provides a coal hopper anti-blockage alarm device to solve the above problems. Summary of the Invention

[0005] (a) Technical problems to be solved This utility model provides a coal hopper anti-blockage alarm device, which aims to solve the problems mentioned in the background art.

[0006] (II) Technical Solution To achieve the above objectives, this utility model provides the following technical solution: A coal hopper anti-blocking alarm device includes: a coal hopper, a support frame fixedly installed on the outer surface of the coal hopper, an opening provided on the side wall of the coal hopper, a collection hopper fixedly installed on the lower surface of the coal hopper, the collection hopper corresponding to the opening, a discharge mechanism provided on the side wall of the coal hopper, and an anti-blocking mechanism provided on the other side wall of the coal hopper. The unloading mechanism includes a flap, which is located at the opening. A rotating rod is fixedly installed on the inner wall of the flap, and the two ends of the rotating rod extend to the outer side walls of the flap.

[0007] As a further description of the above technical solution: Both ends of the rotating rod are rotatably fitted with mounting sleeves. The sidewall of the mounting sleeve is fixedly connected to the sidewall of the coal hopper. A torsion spring is fixedly installed between the sidewall of the flap and the sidewall of the mounting sleeve. The torsion spring is sleeved on the outer surface of the rotating rod.

[0008] As a further description of the above technical solution: The unloading mechanism also includes a mounting plate, the side wall of which is fixedly connected to the side wall of the coal hopper, and the mounting plate is located above the opening.

[0009] As a further description of the above technical solution: An inductive limit switch is fixedly installed on the upper surface of the mounting plate. The sensing end of the inductive limit switch extends to the lower surface of the mounting plate. The inductive limit switch is a non-contact type.

[0010] As a further description of the above technical solution: The anti-blocking mechanism includes a mounting frame and a rotating column. One end of the mounting frame is fixedly connected to the other side wall of the coal hopper, and a servo motor is fixedly installed on the inner surface of the mounting frame.

[0011] As a further description of the above technical solution: The inner wall of the coal hopper is symmetrically and rotatably mounted with rotating columns, one end of which extends to the outside of the coal hopper, and one end of one of the rotating columns is fixedly connected to the output end of a servo motor.

[0012] As a further description of the above technical solution: The outer surface of each rotating column is fixedly equipped with toothed sprockets, which are connected by toothed chain drive. The other end of the rotating column extends into the interior of the coal hopper, and spiral guide plates are fixedly installed at equal intervals on the outer surface of the rotating column.

[0013] (III) Beneficial Effects In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are: 1. In this utility model, by opening holes on the side of the coal hopper and setting up a flap and a sensor limit switch, the initial signal of coal blockage can be accurately captured. As long as the coal in the coal drop pipe accumulates to a certain extent and pushes open the flap, an alarm can be triggered immediately. Compared with the traditional method of relying on manual inspection, the timeliness and accuracy of detection are greatly improved.

[0014] 2. The modified device can not only issue alarm signals, but also be linked with the belt operation and unloader operation. Once coal blockage is detected, the belt operation can be automatically stopped to prevent more coal from entering and aggravating the blockage. Alternatively, the unloader can be raised to change the coal conveying path. At the same time, the coal in the coal hopper can be discharged under the conveying of the spiral guide plate in the anti-blockage mechanism to avoid excessive coal accumulation and the expansion of the fault, thus effectively ensuring the safe and stable operation of the coal conveying system.

[0015] 3. Set up an "Alarm Only, No Action" button on the programmable control screen to give operators flexible control. In some special situations or when there is a slight coal blockage, they can choose to only receive alarm information, continue to observe the situation, and not immediately trigger shutdown or equipment action to ensure the continuity and controllability of coal feeding.

[0016] 4. It has low installation requirements, strong adaptability to complex working conditions, and can meet the operational needs of different environments. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of a coal hopper anti-blockage alarm device.

[0018] Figure 2 In a coal hopper anti-blocking alarm device Figure 1 A magnified structural diagram of point A in the middle.

[0019] Figure 3 This is a three-dimensional structural diagram of a coal hopper anti-blockage alarm device from another angle.

[0020] Figure 4 This is a schematic diagram of the internal structure of a coal hopper in a coal hopper anti-blockage alarm device.

[0021] Legend: 1. Coal hopper; 2. Support frame; 3. Unloading mechanism; 301. Flip plate; 302. Mounting plate; 303. Inductive limit switch; 304. Rotating rod; 305. Mounting sleeve; 306. Torsion spring; 4. Collecting hopper; 5. Anti-blocking mechanism; 501. Mounting frame; 502. Servo motor; 503. Rotating column; 504. Toothed sprocket; 505. Spiral guide plate. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0023] In specific implementation, such as Figures 1-4As shown, this utility model provides a technical solution: a coal hopper anti-blocking alarm device, including a coal hopper 1, a support frame 2 fixedly installed on the outer surface of the coal hopper 1, an opening provided on the side wall of the coal hopper 1, a collecting hopper 4 fixedly installed on the lower surface of the coal hopper 1, the collecting hopper 4 corresponding to the opening, a unloading mechanism 3 provided on the side wall of the coal hopper 1, and an anti-blocking mechanism 5 provided on the other side wall of the coal hopper 1; wherein, the unloading mechanism 3 includes a flap 301, the flap 301 is located at the opening, a rotating rod 304 fixedly installed on the inner wall of the flap 301, and the two ends of the rotating rod 304 extend to the outside of the two side walls of the flap 301.

[0024] Both ends of the rotating rod 304 are rotatably mounted with mounting sleeves 305. The side wall of the mounting sleeve 305 is fixedly connected to the side wall of the coal hopper 1. A torsion spring 306 is fixedly installed between the side wall of the flap 301 and the side wall of the mounting sleeve 305. The torsion spring 306 is sleeved on the outer surface of the rotating rod 304.

[0025] The unloading mechanism 3 also includes a mounting plate 302, the side wall of which is fixedly connected to the side wall of the coal hopper 1, and the mounting plate 302 is located above the opening.

[0026] An inductive limit switch 303 is fixedly installed on the upper surface of the mounting plate 302. The sensing end of the inductive limit switch 303 extends to the lower surface of the mounting plate 302. The inductive limit switch 303 is non-contact.

[0027] Specifically, by setting up the unloading mechanism 3, when the coal chute is blocked, coal will accumulate in the coal hopper 1. As the coal gradually increases, it will squeeze the flap 301. Under the limit of the rotating rod 304, the flap 301 rotates between the mounting sleeves 305. At this time, the inductive limit switch 303 will be triggered and then the signal will be transmitted to the control system. The control system will then issue a coal blockage alarm signal to remind the operator. At the same time, the control system will automatically stop the belt or raise the unloader to prevent excessive coal accumulation in the coal hopper 1 and the coal hopper 1 from bursting.

[0028] It should be noted that the selection of the inductive limit switch 303 and the control unit in the above description are selected as needed. This part is well-known technology in the field and will not be described in detail here.

[0029] It should be noted that the selection of control systems and control units in the above description are all selected as needed. This part is well-known technology in the field and will not be elaborated here.

[0030] The anti-blocking mechanism 5 includes a mounting frame 501 and a rotating column 503. One end of the mounting frame 501 is fixedly connected to the other side wall of the coal hopper 1, and a servo motor 502 is fixedly installed on the inner surface of the mounting frame 501.

[0031] Rotating columns 503 are symmetrically and rotatably installed on the inner wall of the shell cavity of the coal hopper 1. One end of the rotating column 503 extends to the outside of the coal hopper 1, and one end of one of the rotating columns 503 is fixedly connected to the output end of the servo motor 502.

[0032] Toothed sprockets 504 are fixedly installed on the outer surface of the rotating column 503. The toothed sprockets 504 are connected by toothed chain drive. The other end of the rotating column 503 extends into the interior of the coal hopper 1. Spiral guide plates 505 are fixedly installed at equal intervals on the outer surface of the rotating column 503.

[0033] Specifically, by setting up the anti-blocking mechanism 5, after the inductive limit switch 303 transmits the signal for opening the flap 301 to the control system, the control system will also control the servo motor 502 to work inside the mounting frame 501. At this time, the servo motor 502 drives one of the rotating columns 503 to rotate, and under the transmission of the toothed sprocket 504 and the toothed chain, it will drive the other rotating column 503 to rotate. As the rotating column 503 rotates, it will drive the spiral guide plate 505 to rotate synchronously. Under the action of the spiral guide plate 505, the coal in the coal hopper 1 will be evenly transported to the collection hopper 4 through the opening, effectively preventing the coal from accumulating in the coal hopper 1.

[0034] It should be noted that the selection of servo motor 502 and control unit in the above description are selected as needed. This part is well-known technology in the field and will not be described in detail here.

[0035] Working principle: A square opening is first made on the side wall of coal hopper 1, and then the unloading mechanism 3 is installed on one side of the opening. When coal blockage occurs in the coal drop pipe, coal will accumulate in coal hopper 1. As the coal gradually increases, the coal will push open the flap 301 inside the unloading mechanism 3. At this time, the inductive limit switch 303 will be triggered, thereby transmitting the limit signal to the control system. On the one hand, a coal blockage alarm signal is issued to remind the operator through the alarm; on the other hand, the control system will automatically stop the belt operation or raise the unloader to prevent the fault from spreading. In addition, a special button is set on the control interface so that the control system can choose to only alarm without performing the shutdown or raising the unloader action according to actual needs, thereby improving the operational flexibility of the control system. At the same time, the inductive limit switch 303 will also cause the servo motor 502 in the anti-blocking mechanism 5 to work through the control system, so that the rotating column 503 drives the spiral guide plate 505 to rotate. As the spiral guide plate 505 rotates, the coal in the coal hopper 1 will be evenly transported to the collecting hopper 4 through the opening, and the coal discharged by the collecting hopper 4 will be collected.

[0036] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A coal hopper anti-blocking alarm device, characterized in that: include: A coal hopper (1) is provided with a support frame (2) fixedly installed on its outer surface. An opening is provided on the side wall of the coal hopper (1). A collection hopper (4) is fixedly installed on the lower surface of the coal hopper (1). The collection hopper (4) corresponds to the opening. A discharge mechanism (3) is provided on the side wall of the coal hopper (1). An anti-blocking mechanism (5) is provided on the other side wall of the coal hopper (1). The unloading mechanism (3) includes a flap (301), which is located at the opening. A rotating rod (304) is fixedly installed on the inner wall of the flap (301), and both ends of the rotating rod (304) extend to the outer side walls of the flap (301).

2. The anti-blocking alarm device for a coal hopper according to claim 1, characterized in that, Both ends of the rotating rod (304) are rotatably mounted with mounting sleeves (305). The side wall of the mounting sleeve (305) is fixedly connected to the side wall of the coal hopper (1). A torsion spring (306) is fixedly installed between the side wall of the flap (301) and the side wall of the mounting sleeve (305). The torsion spring (306) is sleeved on the outer surface of the rotating rod (304).

3. The anti-blocking alarm device for a coal hopper according to claim 1, characterized in that, The unloading mechanism (3) also includes an installation plate (302), the side wall of which is fixedly connected to the side wall of the coal hopper (1), and the installation plate (302) is located above the opening.

4. The anti-blocking alarm device for a coal hopper according to claim 3, characterized in that, An inductive limit switch (303) is fixedly installed on the upper surface of the mounting plate (302). The sensing end of the inductive limit switch (303) extends to the lower surface of the mounting plate (302). The inductive limit switch (303) is non-contact.

5. The anti-blocking alarm device for a coal hopper according to claim 1, characterized in that, The anti-blocking mechanism (5) includes a mounting frame (501) and a rotating column (503). One end of the mounting frame (501) is fixedly connected to the other side wall of the coal hopper (1), and a servo motor (502) is fixedly installed on the inner surface of the mounting frame (501).

6. The anti-blocking alarm device for a coal hopper according to claim 5, characterized in that, The inner wall of the shell cavity of the coal hopper (1) is symmetrically and rotatably equipped with rotating columns (503). One end of the rotating column (503) extends to the outside of the coal hopper (1), and one end of one of the rotating columns (503) is fixedly connected to the output end of the servo motor (502).

7. The anti-blocking alarm device for a coal hopper according to claim 5, characterized in that, The outer surface of the rotating column (503) is fixedly equipped with toothed sprockets (504), and the toothed sprockets (504) are connected by toothed chain drive. The other end of the rotating column (503) extends into the interior of the coal hopper (1), and spiral guide plates (505) are fixedly installed at equal intervals on the outer surface of the rotating column (503).

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