Automatic control device of coal bunker coal feeder

Abstract

The utility model belongs to the technical field of coal mine mechanical equipment, and aims to solve the problem of lower smashing resistance of a coal feeder. According to the automatic control device for the coal feeder of the coal bunker, the coal feeder is erected above a belt conveyor through a coal feeder vibration reduction base, the coal bunker is located above the coal feeder and connected with a feeding port of the coal feeder through a coal flowing nozzle, and a vibration machine is installed on the side wall of the coal feeder and used for vibrating accumulated coal in the coal feeder to loosen the accumulated coal. The coal feeder gate is rotationally connected to a coal outlet of the coal feeder through the rotating mechanism, the coal feeder and the coal flowing nozzle are each provided with a water coal sensor and a vibration sensor, and the rotating mechanism, the water coal sensors, the vibration sensors and the vibration machine are all electrically connected with the controller. The dustpan of the coal feeder is transformed into a floor supporting type, and the buffering device is additionally arranged, so that the anti-smashing capacity can be improved; and meanwhile, the horizontal bottom of the coal receiving dustpan at the bottom of the coal slipping bunker is transformed, so that a certain amount of coal is always stored at the bottom of the dustpan, and the buffering effect is achieved.

Description

Technical Field

[0001] This utility model belongs to the technical field of coal mine machinery and equipment, specifically relating to an automatic control device for a coal bunker feeder. Background Technology

[0002] The longwall mining face and the transport roadway are connected by a belt conveyor and a coal chute. Because the coal chute is vertical, falling coal and carbon directly hit the coal receiving chute below the coal chute, which shortens the service life of the coal feeder chute. At the same time, flying stones and carbon blocks can also damage the belt conveyor below and the maintenance personnel and passersby nearby.

[0003] Because the opening size of the coal bunker is fixed, large stones frequently block the opening, and water and coal often overflow uncontrollably, seriously affecting the safe production of the coal mine. At the same time, due to the depth of the coal bunker, the strong impact and vibration of large coal and stones falling onto the coal feeding hopper often cause the rigid joints and the coal feeding hopper to crack, break, and wear, which also seriously affects the normal production of the working face. Utility Model Content

[0004] In order to solve at least one of the above-mentioned technical problems in the prior art, this utility model provides an automatic control device for a coal bunker feeder.

[0005] This utility model is achieved using the following technical solution: an automatic control device for a coal feeder, comprising a coal feeder, a coal bunker, a coal feeder vibration damping base, a vibrator, a coal feeder gate, and a controller; the coal feeder is mounted above a belt conveyor via the coal feeder vibration damping base, the coal bunker is located above the coal feeder and connected to the feeder's inlet via a coal flow nozzle, the vibrator is installed on the side wall of the coal feeder and is used to vibrate the accumulated coal in the coal feeder to loosen it, the coal feeder gate is rotatably connected to the coal outlet of the coal feeder via a rotating mechanism, and water-coal sensors and vibration sensors are installed at both the coal feeder and the coal flow nozzle, and the rotating mechanism, water-coal sensors, vibration sensors, and vibrator are all electrically connected to the controller.

[0006] Preferably, the vibration damping base of the coal feeder includes a support frame and a buffer device. The support frame is installed at the belt conveyor, and several buffer devices are evenly arranged between the top plate of the support frame and the bottom plate of the coal feeder.

[0007] Preferably, the rotating mechanism is a pneumatic cylinder connected to a compressed air pipeline laid in the belt conveyor roadway. A solenoid valve is installed between the compressed air pipeline and the pneumatic cylinder, and the solenoid valve is electrically connected to the controller. The free end of the pneumatic cylinder is rotatably connected to the coal feeder gate, and the bottom end is rotatably connected to the side wall of the coal flow nozzle through a hinge seat. The end of the coal feeder gate near the coal flow nozzle is rotatably connected to the side wall of the coal flow nozzle through a rotating shaft and a hinge seat.

[0008] Preferably, the water-coal sensor includes water-coal sensor I and water-coal sensor II, wherein water-coal sensor I is disposed on the side wall of the coal flow nozzle and is used to detect the moisture content of the coal inside the coal flow nozzle, and water-coal sensor II is disposed at the coal outlet of the coal feeder and is used to detect the moisture content of the coal at the coal feeder; a protective cover is provided on the upper part of the portion of water-coal sensor I disposed inside the coal flow nozzle.

[0009] Preferably, the vibration sensor includes vibration sensor I and vibration sensor II, wherein vibration sensor I is disposed on the side wall of the coal flow nozzle and is used to detect the vibration of the coal flow nozzle, and vibration sensor II is disposed on the side wall of the coal feeder and is used to detect the vibration of the coal feeder.

[0010] Preferably, the vibrator is located at the end away from the coal feeder gate, and the controller is electrically connected to the starter of the vibrator.

[0011] Preferably, the vibrator and the coal feeder gate are also equipped with a manual control mechanism for manually controlling the start and stop of the vibrator and the opening and closing of the coal feeder gate; it also includes a belt start / stop sensor installed at the belt conveyor and an audible and visual alarm installed at the coal bunker, both of which are electrically connected to the controller.

[0012] Preferably, the bottom plate of the coal feeder is a horizontal scoop bottom.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This application modifies the hanging type coal feeder scoop to a ground-supported type by adding an elastic buffer device, which reduces the huge destructive force of large carbon and large stones falling on the scoop, improves its impact resistance, and extends the service life of the coal feeder scoop.

[0015] 2. By modifying the bottom of the coal chute to a horizontal type, a certain amount of coal is always kept at the bottom of the chute, which plays a good buffering role. Compared with the original sloping chute, the impact resistance of the chute is improved, the service life of the coal feeding chute is extended, and the damage to the coal feeder and belt conveyor caused by large carbon and stones flying at high speed is effectively reduced, thus reducing maintenance costs and workload.

[0016] 3. Vibration sensors and water-coal sensors, as well as pneumatic mechanical gates, were installed on the coal feeder, enabling real-time monitoring and automated control of the empty coal bunker and water-coal levels. This also enabled the coal feeder to be waterproof and adjustable, reducing the labor intensity of workers.

[0017] 4. The coal feeder is also equipped with a manual gate switch and a vibrator switch, which can realize automatic control or manual operation of the gate switch and vibrator start / stop, increasing the reliability, flexibility and convenience of coal feeder control and improving production efficiency.

[0018] 5. An empty hopper and water / coal voice alarm device has also been added to remind operators to take timely measures, avoid damage to the coal feeder and the danger of water / coal overflow, and promote safe production. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments 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.

[0020] Figure 1 This is a schematic diagram of the installation of the coal feeder before its modification;

[0021] Figure 2 This is a schematic diagram of the overall structure of this embodiment;

[0022] Figure 3 This is a schematic diagram of the automatic module connection for the coal feeder.

[0023] In the diagram: 1-Coal feeder; 2-Coal bunker; 3.1-Support frame; 3.2-Buffer device; 4-Vibrator; 5-Coal feeder gate; 6-Coal flow nozzle; 7-Pneumatic cylinder; 8.1-Coal-water sensor I; 8.2-Coal-water sensor II; 9.1-Vibration sensor I; 9.2-Vibration sensor II; 10-Belt start / stop sensor; 11-Belt conveyor; 12-Accumulated coal. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described in conjunction with 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 implementation methods obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0025] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this utility model can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportional relationships, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should fall within the scope of the technical content disclosed in this utility model. It should be noted that in this specification, relational terms such as "first" and "second" are only used to distinguish one entity from several other entities, and do not necessarily require or imply any actual relationship or order between these entities.

[0026] This utility model provides an embodiment:

[0027] like Figures 1 to 3 As shown, an automatic control device for a coal feeder includes a coal feeder 1, a coal bunker 2, a coal feeder vibration damping base, a vibrator 4, a coal feeder gate 5, and a controller. The coal feeder 1 is mounted above a belt conveyor via the coal feeder vibration damping base. The coal bunker 2 is located above the coal feeder 1 and is connected to the feeder 1's inlet via a coal flow nozzle 6. The vibrator 4 is installed on the side wall of the coal feeder 1 and is used to vibrate the accumulated coal in the coal feeder 1 to loosen it. The coal feeder gate 5 is rotatably connected to the coal outlet of the coal feeder 1 via a rotating mechanism. Water-coal sensors and vibration sensors are installed at both the coal feeder 1 and the coal flow nozzle 6. The rotating mechanism, water-coal sensors, vibration sensors, and vibrator 4 are all electrically connected to the controller.

[0028] In this embodiment, the bottom plate of the coal feeder 1 is a horizontal hopper bottom. When the coal stored in the hopper accumulates at a certain angle, under the action of the vibrator, it is beneficial for both the coal feeding and the hopper's ability to withstand the impact of coal blocks and stones, thus playing a buffering role and extending the service life of the coal feeder hopper. It also reduces the speed at which coal, especially large coal and stones, flows out of the coal outlet, reducing damage to the belt conveyor belt.

[0029] The vibration damping base of the coal feeder includes a support frame 3.1 and a buffer device 3.2. The support frame 3.1 is installed at the belt conveyor, and several buffer devices 3.2 are evenly arranged between the top plate of the support frame 3.1 and the bottom plate of the coal feeder 1.

[0030] The rotating mechanism is a pneumatic cylinder 7 connected to a compressed air pipeline laid in the belt conveyor roadway. A solenoid valve is installed between the compressed air pipeline and the pneumatic cylinder 7, and the solenoid valve is electrically connected to the controller. The free end of the pneumatic cylinder 7 is rotatably connected to the coal feeder gate 5, and the bottom end is rotatably connected to the side wall of the coal flow nozzle 6 through a hinge seat. The end of the coal feeder gate 5 near the coal flow nozzle 6 is rotatably connected to the side wall of the coal flow nozzle 6 through a rotating shaft and a hinge seat. The opening degree of the gate is controlled by the pneumatic cylinder. The air source comes from the compressed air pipeline laid in the belt conveyor roadway. The movement of the pneumatic cylinder and the vibrator is intelligently controlled by the automatic controller of the coal feeder based on the signals fed back by the monitoring sensors.

[0031] Manual control mechanisms are also installed at the vibrator 4 and the coal feeder gate 5 to manually control the start and stop of the vibrator 4 and the opening and closing of the coal feeder gate 5. It also includes a belt start / stop sensor 10 installed at the belt conveyor and an audible and visual alarm installed at the coal bunker. Both the belt start / stop sensor 10 and the audible and visual alarm are electrically connected to the controller. The belt start / stop sensor 10 enables interlocking control between the coal feeder and the belt conveyor; that is, when the conveyor is running, the coal feeder is allowed to start; when the conveyor stops, the coal feeder stops immediately. The audible and visual alarm provides voice alarms for empty bunkers and water / coal spillage. When the vibration sensor and water / coal spillage sensor detect abnormal signals, the controller activates the alarm, issuing an audible and visual alarm saying "Empty bunker, please stop" or "Water / coal spillage, please be careful," reminding operators at the top and bottom of the coal bunker to take timely measures to avoid damage to the coal feeder and the danger of water / coal spillage.

[0032] The water-coal sensor includes water-coal sensor I8.1 and water-coal sensor I8.2. Water-coal sensor I8.1 is installed on the side wall of the coal flow nozzle 6 and is used to detect the moisture content of the coal inside the coal flow nozzle 6. Water-coal sensor I8.2 is installed at the coal outlet of the coal feeder 1 and is used to detect the moisture content of the coal at the coal feeder 1. A protective cover is provided on the upper part of the portion of water-coal sensor I8.1 located outside the coal flow nozzle 6.

[0033] The vibration sensors include vibration sensor I9.1 and vibration sensor I9.2. Vibration sensor I9.1 is installed on the side wall of the coal flow nozzle 6 and is used to detect the vibration of the coal flow nozzle 6. Vibration sensor I9.2 is installed on the side wall of the coal feeder 1 and is used to detect the vibration of the coal feeder 1. The vibrator 4 is installed at the end away from the coal feeder gate 5, and the controller is electrically connected to the starter of the vibrator 4.

[0034] When both the coal moisture sensor I8.1 and the coal moisture sensor II8.2 simultaneously detect that the moisture content of the coal in the coal bunker exceeds the set value, they transmit the detection signal to the controller. The controller then interprets this as coal moisture being added to the coal bunker. To prevent the coal moisture from continuing to increase and suddenly overflowing, it immediately issues a command to promptly start the coal feeder to release coal while the conveyor is running, preventing the accumulation of coal moisture. At the same time, the alarm emits a voice warning signal, "Coal moisture is present, please be aware," alerting the coal feeder operator and the operator of the upper conveyor of the coal bunker to take necessary measures.

[0035] When the vibration sensor on the coal bunker detects that the vibration force and intensity coefficient generated by falling coal exceed the set value, the bunker is considered empty. To prevent large coal and stones from damaging the feeder when the bunker is empty, the automatic controller will immediately issue a command to stop the feeder and close the feeder gate. At the same time, the alarm will issue a voice alarm signal saying "Empty bunker, please stop the machine" to remind the operators at the top and bottom of the bunker. Only when the coal level in the bunker rises, the falling coal and coal position is higher than the coal chute, and the impact force on the feeder decreases to the set value (i.e., the bunker is not empty), will the controller allow the gate to be opened again and the feeder to start discharging coal.

[0036] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. An automatic control device for a coal bunker feeder, characterized in that: It includes a coal feeder (1), a coal bunker (2), a coal feeder vibration damping base, a vibrator (4), a coal feeder gate (5), and a controller; The coal feeder (1) is mounted on the belt conveyor via a coal feeder vibration damping base. The coal bunker (2) is located above the coal feeder (1) and is connected to the feeder (1) inlet via a coal flow nozzle (6). The vibrator (4) is installed on the side wall of the coal feeder (1) and is used to vibrate the coal stored in the coal feeder (1) to loosen it. The coal feeder gate (5) is rotatably connected to the coal outlet of the coal feeder (1) via a rotating mechanism. Water and coal sensors and vibration sensors are installed at both the coal feeder (1) and the coal flow nozzle (6). The rotating mechanism, water and coal sensors, vibration sensors and vibrator (4) are all electrically connected to the controller.

2. The automatic control device for a coal bunker feeder according to claim 1, characterized in that: The vibration damping base of the coal feeder includes a support frame (3.1) and a buffer device (3.2). The support frame (3.1) is installed at the belt conveyor, and several buffer devices (3.2) are evenly arranged between the top plate of the support frame (3.1) and the bottom plate of the coal feeder (1).

3. The automatic control device for a coal bunker feeder according to claim 1, characterized in that: The rotating mechanism is a pneumatic cylinder (7) connected to a compressed air pipeline laid in the belt conveyor roadway. A solenoid valve is installed between the compressed air pipeline and the pneumatic cylinder (7), and the solenoid valve is electrically connected to the controller. The free end of the pneumatic cylinder (7) is rotatably connected to the coal feeder gate (5), and the bottom end is rotatably connected to the side wall of the coal flow nozzle (6) through a hinge seat. The end of the coal feeder gate (5) near the coal flow nozzle (6) is rotatably connected to the side wall of the coal flow nozzle (6) through a rotating shaft and a hinge seat.

4. The automatic control device for a coal bunker feeder according to claim 1, characterized in that: The water-coal sensor includes water-coal sensor I (8.1) and water-coal sensor II (8.2). Water-coal sensor I (8.1) is located on the side wall of the coal flow nozzle (6) and is used to detect the moisture content of the coal inside the coal flow nozzle (6). Water-coal sensor I (8.1) is located at the coal outlet of the coal feeder (1) and is used to detect the moisture content of the coal at the coal feeder (1). A protective cover is provided on the upper part of the portion of water-coal sensor I (8.1) located inside the coal flow nozzle (6).

5. The automatic control device for a coal bunker feeder according to claim 1, characterized in that: The vibration sensor includes vibration sensor I (9.1) and vibration sensor II (9.2), wherein vibration sensor I (9.1) is located on the side wall of the coal flow nozzle (6) and is used to detect the vibration of the coal flow nozzle (6), and vibration sensor II (9.2) is located on the side wall of the coal feeder (1) and is used to detect the vibration of the coal feeder (1).

6. The automatic control device for a coal bunker feeder according to claim 1, characterized in that: The vibrator (4) is located at the end away from the coal feeder gate (5), and the controller is electrically connected to the starter of the vibrator (4).

7. The automatic control device for a coal bunker feeder according to claim 1, characterized in that: The vibrator (4) and the coal feeder gate (5) are also equipped with manual control mechanisms for manually controlling the start and stop of the vibrator (4) and the opening and closing of the coal feeder gate (5); it also includes a belt start / stop sensor (10) installed at the belt conveyor and an audible and visual alarm installed at the coal bunker. The belt start / stop sensor (10) and the audible and visual alarm are both electrically connected to the controller.

8. The automatic control device for a coal bunker feeder according to claim 1, characterized in that: The bottom plate of the coal feeder (1) is a horizontal scoop bottom.

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