Raw coal silo storage level alarm system

Abstract

This invention provides a raw coal silo storage volume alarm device in the field of boiler equipment technology. [Solution] The storage level alarm device comprises a silo body 1, with multiple image acquisition devices 2 provided on the top of the silo body, and the image acquisition devices are electrically connected to a host computer 3. Furthermore, it is equipped with an audible and optical alarm 4, which is electrically connected to the host computer. The host computer is configured to send control commands to the audible and optical alarm based on the storage level height captured by the image acquisition devices. This effectively notifies workers of abnormal storage levels and reduces the need for workers to constantly monitor the storage level.

Description

Technical Field

[0001] This utility model relates to the technical field of boiler equipment, and particularly to a storage quantity warning device for raw coal silos.

Background Art

[0002] In the technical field of boiler equipment, always maintaining the storage quantity of the raw coal silo above the safety baseline is one of the most important measures to ensure the stable operation of the silo. Currently, the management of the storage quantity of the raw coal silo mainly depends on the confirmation of computer display data by the on-duty responsible person and visual estimation by the on-site on-duty staff.

[0003] Since its management method completely relies on human judgment, if there is carelessness or judgment error of personnel, it is possible that even if the storage quantity of the silo drops excessively, it will not be discovered in time. In such a situation, if a sudden failure occurs in the coal supply equipment (for example, if an abnormality occurs in the bucket wheel stacker reclaimer), it will face the dilemma of being unable to replenish coal into the silo in time. Also, since it takes a certain amount of time to repair the equipment, a situation where the remaining coal quantity in the silo is insufficient is likely to occur. Once the remaining coal quantity is insufficient, the coal supply to the boiler will be cut off, seriously affecting the production operation.

[0004] The Chinese utility model patent with publication number CN208683557U discloses a visualized anti-blocking device for raw coal silos. The device consists of a raw coal silo, a coal feeder, a flexible connecting pipe, a material partition valve, a split silo, a resistance ring, a fixed link, a vibration device, a throttle partition valve, an expansion silo, a silo monitoring system, a silo distance measurement system, and a smart control system. Its features are that the split silo is connected by a resistance ring and fixed by a fixed link, the throttle partition valve opens and closes by a bidirectional hydraulic transmission method, and holes of a certain size are provided on the valve plate, the silo distance measurement system consists of a distance measurement module, an inclination angle module, a smart integrated main board, and a video superposition module, and it tracks the coal level height at specific points to realize the real-time tracking distance measurement function.

[0005] The above example uses a silo monitoring system and a silo distance measurement system to observe and control the conditions inside the silo in real time and remotely. However, the essence of this system is still that the duty officer must actively observe the data and judge the state of the stored contents. Therefore, there is still a risk of alarm delays due to personnel fatigue, omissions during shift changes, and distractions, and improvement is urgently needed. [Overview of the Initiative] [Means for solving the problem]

[0006] To overcome the shortcomings of the above-mentioned conventional technology, this invention designs a storage volume alarm device for raw coal silos. This device can effectively alert workers to abnormal storage levels and reduce their reliance on continuous monitoring of storage levels by workers.

[0007] To achieve the above objective, this invention employs the following technical solutions: A raw coal silo storage volume alarm device comprising a silo body, wherein a plurality of image acquisition devices are provided on the top of the silo body, the image acquisition devices are electrically connected to a host computer, and the device further comprises an audible and optical alarm, the audible and optical alarm is electrically connected to the host computer, and the host computer is used to transmit control commands to the audible and optical alarm based on the storage height captured by the image acquisition devices.

[0008] Furthermore, a lifting device is provided at the top of the silo body, the lifting rod of the lifting device is inserted into the interior of the silo body, and a wall scraping device is attached to the lower end of the lifting rod, the wall scraping device comprises a rotating disc and a drive member for rotating the rotating disc, a mounting cylinder is integrally provided at the lower end of the rotating disc, a pair of vertical rods are symmetrically fixed to the side of the mounting cylinder, a scraping rod is attached to the free end of the vertical rod, a scraping plate is attached to the free end of the scraping rod, and the free end of the scraping plate is positioned in close contact with the inner wall of the silo body.

[0009] Furthermore, the lower end of the lifting rod is fixedly fitted to a stationary gear after rotatably passing through the top wall of the turntable, two symmetrically arranged rotating gears are meshed with the stationary gear, and a feeding rod is fixedly fitted to the inner ring of the rotating gears, and the feeding rod is fixedly connected to an extrusion rod after rotatably passing through the bottom wall of the mounting cylinder.

[0010] Furthermore, the scraping plates are formed by bending, and the two scraping plates are arranged symmetrically around the center.

[0011] Furthermore, an adsorption tube is provided penetrating the side of the silo body, an adsorption device is connected to the outer end of the adsorption tube, the adsorption device is electrically connected to the host computer, and an openable and closable shut-off door is provided at the inner end of the adsorption tube.

[0012] Furthermore, the drive unit comprises a drive device, a rotating rod, and a rotating column. The drive device is provided at the top of the silo body and is electrically connected to the upper end of the rotating rod. The lower end of the rotating rod is inserted into the interior of the silo body. The front rotating column is fixedly attached to the lower end of the rotating rod. Multiple vertical first meshing teeth are uniformly arranged along the circumferential direction on the side surface of the rotating column, and second meshing teeth corresponding to the first meshing teeth are provided on the side surface of the rotating disc.

[0013] Furthermore, an adjustment device is attached to the rotating rod, and the adjustment device comprises a fixed block, an I-shaped flange tube, and a hinge sleeve, arranged in order from top to bottom, the fixed block being fixedly connected to the inner wall of the silo body and rotatably fitted to the rotating rod, the I-shaped flange tube and the hinge sleeve both being slidably fitted to the rotating rod, the hinge sleeve being fixedly provided at the lower end of the I-shaped flange tube, a link assembly for opening the closed door being movably locked to the I-shaped flange tube, and a centrifugal assembly for sliding the hinge sleeve downward when the rotating rod rotates being hinged to the hinge sleeve.

[0014] Furthermore, the link assembly comprises a first oscillating rod, a second oscillating rod, and a third oscillating rod, which are hinged together in order. The free end of the first oscillating rod is movably engaged with the I-shaped flange tube, and the middle portion of the first oscillating rod is hinged to a hinge block fixed to the inner wall of the silo body. A rotating pin is fixedly fitted to the free end of the third oscillating rod, and the rotating pin rotatably penetrates the side wall of the suction tube before being fixedly connected to the side of the closing door.

[0015] Furthermore, the centrifugal assembly comprises two second hinge rods arranged symmetrically around the center, with a first hinge rod hinged to the upper end of each of the two second hinge rods, the free ends of both first hinge rods hinged to a hinge block, the side surface near the upper end of each second hinge rod hinged to the rotating rod, and a centrifugal ball fixedly connected to the lower end of each second hinge rod.

[0016] Furthermore, the drive unit is electrically connected to the host computer. [Effects of the Invention]

[0017] This invention has the following features and beneficial effects compared to the prior art. 1. This invention uses an image acquisition device to collect the storage height inside the silo and transmits the collected storage height data to a host computer. The host computer monitors the storage height in real time, and if the storage height falls below a pre-set standard value, the host computer sends a control command to an audible alarm to activate the alarm. This effectively alerts workers to the abnormal storage height situation and solves the problems of delay and low reliability associated with conventional human judgment.

[0018] 2. This invention allows the vertical rod to rotate around the lifting rod by rotating the turntable with the drive unit, and further drives the scraping plate with the vertical rod to clean the inner wall of the silo body. By combining this with the installation of the lifting device and lifting rod, the height position of the scraping plate can be changed. That is, if the storage height does not change for more than one hour, the lifting device is activated to lower the lifting rod, and further, the raw coal inside the silo body is pushed out and fed in by the wall scraping device. At the same time, the drive unit is activated to scrape off any raw coal remaining on the inner wall of the silo body 1, preventing accumulation. In addition, due to the meshing action of the rotating gear and the stationary gear, the input rod rotates simultaneously, and the input rod rotates while revolving around the lifting rod. The rotation of the input rod applies shear force to the coal raw material, effectively breaking up ligatures and adhesions, and the revolving of the input rod allows the extrusion rod to cover a wider area of ​​coal piles, avoiding localized accumulation.

[0019] 3. The adsorption device of this invention actively sucks up dust through the adsorption tube, ensuring image clarity and maintaining the accuracy of storage volume monitoring. Furthermore, when the rotation speed of the rotating rod is high, the rotation speed of the rotating disk also increases, and the amount of dust that is stirred up also increases. At the same time, the higher the rotation speed of the rotating rod, the greater the amplitude of motion of the I-shaped flange tube, and the greater the opening degree of the closing door via the link assembly, thereby adsorbing more dust. When the rotation speed of the rotating rod is low, the opening degree of the closing door is reduced, preventing the outflow of effective coal powder due to excessive suction at low loads, reducing interference of the coal raw material layer inside the silo by airflow, and maintaining the stability of the raw material position.

Brief Description of the Drawings

[0020] [Figure 1] This is the connection schematic diagram of the present invention. [Figure 2] This is the front structure schematic diagram of the scraping device of the present invention. [Figure 3] This is the three-dimensional structure schematic diagram of the scraping device of the present invention viewed from the first perspective. [Figure 4] This is the three-dimensional structure schematic diagram of the scraping device of the present invention viewed from the second perspective. [Figure 5] This is the front structure schematic diagram of the adjusting device of the present invention. [Figure 6] This is the three-dimensional structure schematic diagram of the adjusting device of the present invention.

Modes for Carrying Out the Invention

[0021] Hereinafter, the present invention will be described in more detail with reference to examples.

[0022] (Example 1) Please refer to FIG. 1. The raw coal silo level alarm device according to this embodiment includes a silo main body 1, and a plurality of image acquisition devices 2 are provided on the top of the silo main body 1. The image acquisition device 2 is electrically connected to the host computer 3, and the storage level height in the silo main body 1 can be monitored by the image acquisition device 2.

[0023] Furthermore, it is equipped with an audible and optical alarm 4, which is electrically connected to the host computer 3. The host computer 3 transmits control commands to the audible and optical alarm 4 based on the storage level height collected by the image acquisition device 2. Specifically, the image acquisition device 2 collects the storage level height inside the silo body 1 and transmits the collected storage level height data to the host computer 3. The host computer 3 can constantly monitor the storage level height, and if the storage level height falls below a preset value, the host computer 3 transmits a control command to the audible and optical alarm 4 to activate it. This effectively notifies workers of abnormal storage level heights and solves the problems of delays and unreliability caused by conventional human judgment.

[0024] In this embodiment, the sound and light alarm 4 is equipped with a buzzer and a flashing light. If the storage level falls below 6 meters, the flashing light flashes red and the buzzer sounds rapidly. If the storage level falls below 7.5 meters, the flashing light flashes yellow and the buzzer sounds slowly. If the storage level does not change for more than one hour despite an operating signal from the coal feeder, the system will emit a wall-adhering sound.

[0025] (Example 2) Please refer to Figures 1 to 4. The level alarm device for the raw coal silo according to this embodiment is based on Embodiment 1 described above, and a lifting device 6 is provided at the top of the silo body 1. The lower end of the lifting device 6 is connected to a lifting rod 601, and the lifting rod 601 can be driven up and down.

[0026] The lifting rod 601 of the lifting device 6 is inserted into the silo body 1, and a wall scraping device 8 is attached to the lower end of the lifting rod 601.

[0027] Specifically, the wall scraping device 8 comprises a rotating disc 801 and a drive unit that rotates the rotating disc 801. A mounting cylinder 802 is integrally provided at the lower end of the rotating disc 801, and a pair of vertical rods 803 are symmetrically fixed to the side of the mounting cylinder 802. A scraping rod 804 is attached to the free end of the vertical rod 803, and a scraping plate 805 is attached to the free end of the scraping rod 804. The free end of the scraping plate 805 is positioned in close contact with the inner wall of the silo body 1. When the drive unit rotates the rotating disc 801, the vertical rod 803 rotates around the lifting rod 601, and the vertical rod 803 drives the scraping plate 805 to clean the inner wall of the silo body 1. The height position of the scraping plate 805 can be changed by using the lifting device 6 and the lifting rod 601 in combination. In other words, if the storage level height does not change for more than one hour, the lifting device 6 is activated to lower the lifting rod 601, and the wall scraping device 8 pushes down the raw coal inside the silo body 1 and allows it to be loaded. At the same time, by activating the drive unit, raw coal adhering to the inner wall of the silo body 1 is scraped off to prevent accumulation.

[0028] Furthermore, the lower end of the lifting rod 601 rotatably penetrates the top wall of the turntable 801, and a fixed gear 602 is fixedly fitted to it. The fixed gear 602 meshes with two symmetrically arranged rotating gears 808. The input rod 806 is fixedly fitted to the inner ring of the rotating gear 808, and the input rod 806 rotatably penetrates the bottom wall of the mounting cylinder 802 and is fixedly connected to the extrusion rod 807. During the rotation of the turntable 801, the input rod 806 revolves around the lifting rod 601. Due to the meshing action of the rotating gears 808 and the fixed gear 602, the input rod 806 rotates on its own axis simultaneously. As a result, the input rod 806 rotates on its own axis while revolving around the lifting rod 601, applying shear force to the coal and effectively breaking up bridging or adhesion. The revolving of the input rod 806 allows the extrusion rod 807 to cover a wider area of ​​coal accumulation, avoiding localized accumulation.

[0029] Furthermore, the scraping plates 805 are provided in a curved shape, and the two scraping plates 805 are arranged symmetrically around the center. The curved structure of the scraping plates 805 creates a constant angle at the contact surface between the scraping plates 805 and the inner wall of the silo body 1, increasing the scraping force and more thoroughly removing attached coal, thereby reducing residue.

[0030] Furthermore, the drive unit comprises a drive device 7, a rotating rod 701, and a rotating column 702. The drive device 7 is located at the top of the silo body 1 and is electrically connected to the upper end of the rotating rod 701, thereby rotationally driving the rotating rod 701. The lower end of the rotating rod 701 is inserted into the interior of the silo body 1, and the rotating column 702 is fixedly installed at the lower end of the rotating rod 701. Multiple vertical first meshing teeth are uniformly arranged along the circumferential direction on the side surface of the rotating column 702, and second meshing teeth corresponding to the first meshing teeth are provided on the side surface of the rotating disk 801. When the drive device 7 rotationally drives the rotating rod 701, the rotating column 702 rotates synchronously, and rotationally drives the rotating disk 801 via the first and second meshing teeth.

[0031] (Example 3) Please refer to Figures 5 and 6. The level alarm device for the raw coal silo according to this embodiment is based on Embodiment 2 described above, with an adsorption tube 501 installed through the side of the silo body 1. The outer end of the adsorption tube 501 is connected to an adsorption device 5, which is electrically connected to a host computer 3. An openable and closable closing door 502 is provided at the inner end of the adsorption tube 501. The adsorption device 5 is activated and controlled by the host computer 3, and the adsorption device 5 can adsorb dust from inside the silo body 1 via the adsorption tube 501.

[0032] If the storage level height remains unchanged for more than one hour and the wall scraping device 8 is activated, a large amount of dust will be stirred up inside the silo body 1. If this dust is not removed promptly, it will affect the accuracy of the image acquisition device 2. The adsorption device 5 adsorbs the dust inside the silo body 1 via the adsorption tube 501, enabling the image acquisition device 2 to always acquire clear images of the storage level height.

[0033] Furthermore, an adjustment device 9 is attached to the rotating rod 701. The adjustment device 9 comprises a fixed block 901, an I-shaped flange pipe 902, and a hinge sleeve 903, arranged from top to bottom. The fixed block 901 is fixedly connected to the inner wall of the silo body 1, and the fixed block 901 is rotatably fitted onto the rotating rod 701.

[0034] The I-shaped flange tube 902 and the hinge sleeve 903 are both slidably fitted onto the rotating rod 701, and the hinge sleeve 903 is fixedly installed at the lower end of the I-shaped flange tube 902. A link assembly that drives the opening of the closing door 502 is movably engaged with the I-shaped flange tube 902. The hinge sleeve 903 is hinged to a centrifugal assembly that slides the hinge sleeve 903 downward when the rotating rod 701 rotates.

[0035] Specifically, the link assembly comprises a first oscillating rod 908, a second oscillating rod 909, and a third oscillating rod 910, which are hinged together in order. The free end of the first oscillating rod 908 is movably engaged with an I-shaped flange tube 902, and the middle portion of the first oscillating rod 908 is hinged to a hinge block 907 fixedly installed on the inner wall of the silo body 1. A rotating pin 911 is fixedly fitted to the free end of the third oscillating rod 910, and the rotating pin 911 rotatably penetrates the side wall of the suction tube 501 before being fixedly connected to the side of the closing door 502.

[0036] Specifically, the centrifugal assembly comprises two second hinge rods 905 arranged symmetrically around the center. A first hinge rod 904 is hinged to the upper end of each of the two second hinge rods 905, and the free ends of both first hinge rods 904 are hinged to a hinge block 907. The side surface near the upper end of each second hinge rod 905 is hinged to a rotating rod 701, and a centrifugal ball 906 is fixedly connected to the lower end of each second hinge rod 905.

[0037] As is clear from the above description, when the rotating rod 701 rotates, the centrifugal ball 906 swings away from the rotating rod 701. The swing of the centrifugal ball 906 causes the upper end of the second hinge rod 905 to swing the first hinge rod 904. Since the hinge sleeve 903 is slidably attached to the rotating rod 701, the swing of the first hinge rod 904 causes the hinge sleeve 903 to slide downward. This causes the hinge sleeve 903 to swing the first oscillating rod 908, and the restrictive action of the hinge block 907 causes the second oscillating rod 909 to swing, and the second oscillating rod 909 further causes the third oscillating rod 910 to swing. The third oscillating rod 910 rotates the rotating pin 911, and the rotation of the rotating pin 911 rotates the closing door 502, opening the opening of the adsorption tube 501, allowing the adsorption device 5 to adsorb dust from inside the silo body 1.

[0038] Furthermore, the drive unit 7 is electrically connected to the host computer 3.

[0039] The adsorption device 5 actively sucks up dust through the adsorption tube 501, ensuring image clarity and maintaining the accuracy of storage level monitoring. The higher the rotation speed of the rotating rod 701, the faster the rotation speed of the rotating disc 801, and the greater the amount of dust that is stirred up. At the same time, the higher the rotation speed of the rotating rod 701, the greater the movement of the I-shaped flange tube 902, and the greater the opening of the closing door 502 via the link assembly, allowing more dust to be adsorbed. When the rotation speed of the rotating rod 701 is low, the opening of the closing door 502 is small, preventing the outflow of effective coal dust due to excessive suction at low loads, reducing disturbance to the coal seam inside the silo due to airflow, and maintaining the stability of the storage level.

[0040] The operating principle of this invention is as follows: the image acquisition device 2 and the host computer 3 work together to intelligently monitor the storage level of the raw coal silo, and together with the sound and light alarm 4, actively notify workers of any abnormal storage levels. This effectively reduces the risk of alarm delays due to human negligence.

[0041] The liftable wall scraping device 8 cleans the coal adhering to the silo wall with a rotating scraping plate 805, and together with the rotating feeding function of the extrusion rod 807, prevents coal powder from sticking and improves fluidity.

[0042] By using the suction tube 501 configuration in combination with the centrifugal-driven link assembly, the closing door 502 is automatically opened during cleaning operations to collect dust, ensuring image clarity and maintaining the accuracy of storage level monitoring.

[0043] This device utilizes automated control to achieve coordinated operation of storage level monitoring, attached coal cleaning, and dust treatment, reducing the workload on workers. Furthermore, its multi-layered safety mechanism effectively prevents coal depletion accidents, significantly improving the operational safety and reliability of the silo.

[0044] In the description of this invention, directions or positional relationships indicated by terms such as "inside," "outside," and "above" are based on the directions or positional relationships shown in the drawings. These are merely for the purpose of facilitating the description of this invention and do not suggest or imply that the device or component must be configured or operate in a specific direction. Therefore, they should not be interpreted as limiting this invention.

[0045] In the description of this invention, the term "connection" is interpreted broadly unless otherwise specifically defined or limited. For example, it includes fixed connections, removable connections, integral connections, mechanical connections, electrical connections, direct connections, indirect connections via an intermediate medium, and internal communication between two parts. Those skilled in the art will understand the specific meaning of the above terms in this invention depending on the specific circumstances.

[0046] Clearly, the above embodiments represent only a portion of the present invention, not all embodiments. All other embodiments that a person skilled in the art could obtain without creative work based on the embodiments of the present invention are all within the scope of the protection of the present invention. [Explanation of symbols]

[0047] 1. Silo body; 2. Image acquisition device; 3. Host computer; 4. Sound and light alarm; 5. Suction device; 501. Suction tube; 502. Closing door; 6. Lifting device; 601. Lifting rod; 602. Fixed gear; 7. Drive device; 701. Rotating rod; 702. Rotating column; 8. Wall scraping device; 801. Rotating disc; 802. Mounting cylinder; 803. Vertical rod; 804. Scraping rod; 805. Scraping pipe Rate; 806, Input rod; 807, Extrusion rod; 808, Rotating gear; 9, Adjusting device; 901, Fixing block; 902, I-shaped flange tube; 903, Hinge sleeve; 904, First hinge rod; 905, Second hinge rod; 906, Centrifugal ball; 907, Hinge block; 908, First oscillating rod; 909, Second oscillating rod; 910, Third oscillating rod; 911, Rotating pin;

Claims

1. The system comprises a silo body (1), with a plurality of image acquisition devices (2) provided on the top of the silo body (1), and the image acquisition devices (2) are electrically connected to a host computer (3) as a raw coal silo storage volume alarm device, and further, A raw coal silo storage volume alarm device comprising an audible and optical alarm (4), wherein the audible and optical alarm (4) is electrically connected to the host computer (3), and the host computer (3) is used to transmit control commands to the audible and optical alarm (4) based on the storage height captured by the image acquisition device (2).

2. A lifting device (6) is provided at the top of the silo body (1), and the lifting rod (601) of the lifting device (6) is inserted into the interior of the silo body (1). A wall scraping device (8) is attached to the lower end of the lifting rod (601), and the wall scraping device (8) comprises a rotating disc (801) and a drive member for rotating the rotating disc (801), and a mounting cylinder (802) is integrally provided at the lower end of the rotating disc (801). The raw coal silo storage amount alarm device according to claim 1, characterized in that a pair of vertical rods (803) are symmetrically fixed to the side of the mounting cylinder (802), a scraping rod (804) is attached to the free end of the vertical rod (803), a scraping plate (805) is attached to the free end of the scraping rod (804), and the free end of the scraping plate (805) is positioned in close contact with the inner wall of the silo body (1).

3. The lower end of the lifting rod (601) is fixedly fitted to a fixed gear (602) after rotatably passing through the top wall of the rotating disc (801), two symmetrically arranged rotating gears (808) are meshed with the fixed gear (602), a loading rod (806) is fixedly fitted to the inner ring of the rotating gears (808), and the loading rod (806) is fixedly connected to an extrusion rod (807) after rotatably passing through the bottom wall of the mounting cylinder (802), as described in claim 2, for a raw coal silo storage amount alarm device.

4. The raw coal silo storage amount alarm device according to claim 2, characterized in that the scraping plate (805) is formed by bending, and the two scraping plates (805) are arranged symmetrically around the center.

5. The raw coal silo storage amount alarm device according to claim 2, characterized in that an adsorption tube (501) is provided penetrating the side of the silo body (1), an adsorption device (5) is connected to the outer end of the adsorption tube (501), the adsorption device (5) is electrically connected to the host computer (3), and an openable and closable shut-off door (502) is provided at the inner end of the adsorption tube (501).

6. The drive unit comprises a drive device (7), a rotating rod (701), and a rotating column (702), the drive device (7) is provided on the top of the silo body (1), the drive device (7) is electrically connected to the upper end of the rotating rod (701), the lower end of the rotating rod (701) is inserted into the interior of the silo body (1), the front rotating column (702) is fixedly provided to the lower end of the rotating rod (701), a plurality of vertical first meshing teeth are uniformly provided on the side surface of the rotating column (702) along the circumferential direction, and second meshing teeth corresponding to the first meshing teeth are provided on the side surface of the rotating disc (801), characterized in that the raw coal silo storage amount alarm device according to claim 5.

7. An adjustment device (9) is attached to the rotating rod (701), and the adjustment device (9) comprises a fixed block (901), an I-shaped flange tube (902), and a hinge sleeve (903) arranged from top to bottom, the fixed block (901) is fixedly connected to the inner wall of the silo body (1), and the fixed block (901) is rotatably fitted onto the rotating rod (701), and the I-shaped flange tube (902) and the hinge sleeve (903) are both connected to the rotating rod (7 The raw coal silo storage amount alarm device according to claim 6, characterized in that the hinge sleeve (903) is slidably fitted to (01), and the hinge sleeve (903) is fixedly provided at the lower end of the I-shaped flange tube (902), a link assembly for opening the closing door (502) is movably locked to the I-shaped flange tube (902), and a centrifugal assembly for sliding the hinge sleeve (903) downward when the rotating rod (701) rotates is hinged to the hinge sleeve (903).

8. The link assembly comprises a first oscillating rod (908), a second oscillating rod (909), and a third oscillating rod (910) hinged together in order, the free end of the first oscillating rod (908) being movably engaged with the I-shaped flange tube (902), the middle portion of the first oscillating rod (908) being hinged to a hinge block (907) fixed to the inner wall of the silo body (1), a rotating pin (911) being fixedly fitted to the free end of the third oscillating rod (910), the rotating pin (911) rotatably penetrating the side wall of the adsorption tube (501) and then being fixedly connected to the side of the closing door (502), as described in claim 7, the raw coal silo storage amount alarm device.

9. The storage amount alarm device for a raw coal silo according to claim 7, characterized in that the centrifugal assembly comprises two second hinge rods (905) arranged symmetrically around the center, a first hinge rod (904) is hinged to the upper end of each of the two second hinge rods (905), the free ends of the two first hinge rods (904) are both hinged to a hinge block (907), the side surface near the upper end of the second hinge rod (905) is hinged to the rotating rod (701), and a centrifugal ball (906) is fixedly connected to the lower end of the second hinge rod (905).

10. The raw coal silo storage amount alarm device according to claim 6, characterized in that the drive unit (7) is electrically connected to the host computer (3).

Images