Coal feeder belt deviation alarm device

Abstract

The utility model discloses a coal feeder belt deviation warning device, which relates to the field of warning devices and comprises a mounting plate, two end plates are fixedly arranged on the front side of the mounting plate, a controller and a warner are fixedly arranged on one end plate, a measuring arm is arranged on the front side of the mounting plate and comprises a sleeve, a sliding block is arranged in the sleeve, and the sliding block is connected with the warner. A connecting shaft is arranged at the end, facing the opening of the sleeve, of the sliding block through a bearing, and one end of the connecting shaft extends out of the sleeve and is fixedly provided with a contact wheel capable of being lapped on a belt of the coal feeder. The edge angle at the edge of the belt is clamped into the annular groove in the outer end of the contact wheel, so that the contact wheel can be in close contact with the belt all the time, even if the belt deviates, the contact wheel can move synchronously with the belt, and the situation that other positions make contact with the belt and hinder operation of the belt due to the fact that the deviation amount of the belt is too large is avoided.

Description

Technical Field

[0001] The utility model relates to the field of alarm devices, in particular to a coal feeder belt deviation alarm device. Background Art

[0002] A coal feeder is a device that transports raw materials to a coal mill. The coal feeder is equipped with a belt that transports the raw materials and weighs them through the movement of the belt, thereby adjusting the delivery amount according to the load of the boiler.

[0003] During long-term use, the belt inside the coal feeder may deviate, thus affecting its normal use. For this reason, in the prior art, an alarm device is provided to detect the deviation of the belt in real time and to give an alarm in time when deviation occurs, such as a coal feeder belt deviation alarm device with publication number CN205891989U.

[0004] In the prior art, the belt contacts the roller on the mechanical crank arm, and the roller is installed in a square groove. When the belt is offset, the contact position between the belt and the roller will change, and the belt may even move to the outside of the square groove and no longer contact the roller. In this way, the mechanical crank arm will directly contact the belt and generate friction, hindering the operation of the belt. Utility Model Content

[0005] In view of the shortcomings of the prior art, the utility model provides a coal feeder belt deviation alarm device, which enables the contact wheel to move synchronously with the belt when the belt is offset by clamping the corners at the edge of the belt into the annular groove at the outer end of the contact wheel, thereby preventing the belt from deviating too much and causing other positions to contact the belt and hinder the operation of the belt, thereby effectively solving the problems in the background technology.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a coal feeder belt deviation alarm device, comprising a mounting plate, two end plates are fixedly arranged on the front side of the mounting plate, a controller and an alarm are fixedly arranged on one of the end plates, and a measuring arm is arranged on the front side of the mounting plate;

[0007] The measuring arm comprises a sleeve, a sliding block is arranged inside the sleeve, the sliding block can slide along a straight line inside the sleeve, and a connecting shaft is arranged at one end of the sliding block facing the sleeve opening through a bearing;

[0008] One end of the connecting shaft extends to the outside of the sleeve and is fixedly provided with a contact wheel that can be placed on the coal feeder belt. An annular groove is opened at the outer end of the contact wheel, and the edge of the belt can be stuck in the annular groove.

[0009] Furthermore, a detachable exhaust passage is provided on the front side of the mounting plate, two air inlet pipes are fixedly provided on the top of the exhaust passage, and an exhaust slot is provided on the side of the exhaust passage facing the belt.

[0010] Furthermore, an inner wheel is provided between the two end plates, and a resistance ring is fixedly provided at the outer end of the inner wheel;

[0011] An outer wheel is also provided between the two end plates, and a groove is provided on the side of the outer wheel facing the inner wheel. The inner wheel is embedded in the groove, and an electrode sheet in contact with the outer end of the resistance coil is embedded on the inner wall of the groove. The sleeve is fixed at the outer end of the outer wheel, and the sleeve can cause the outer wheel to rotate.

[0012] Furthermore, the resistance coil and the electrode sheet are both arranged at the input end of the controller, and the alarm is arranged at the output end of the controller, and reflects the deviation of the belt according to the change of the resistance in the circuit.

[0013] Furthermore, a mounting plate is fixedly provided on the inner wheel, and clamping plates are provided on both the front and rear sides of the mounting plate through bolts, and the clamping plate is fixedly provided on one of the end plates, so that the inner wheel can be installed or removed.

[0014] Furthermore, a fixed shaft is provided on the other end plate through a bearing, one end of the fixed shaft is fixedly connected to the outer wheel, a torsion spring is provided between the other end plate and the outer wheel, and both ends of the torsion spring are respectively fixedly connected to the outer wheel and the other end plate, so that the contact wheel can be in close contact with the belt with the help of the elastic force of the torsion spring.

[0015] Compared with the prior art, the utility model provides a coal feeder belt deviation alarm device, which has the following beneficial effects:

[0016] 1. By inserting the edges of the belt into the annular groove at the outer end of the contact wheel, the contact wheel can always be in close contact with the belt. Even when the belt is offset, the contact wheel can move synchronously with the belt to avoid excessive belt offset, which may cause other positions to contact the belt and hinder the operation of the belt.

[0017] 2. The air is introduced into the exhaust channel through the air inlet pipe. The air entering the exhaust channel is finally blown out through the exhaust slot and blown toward the belt, so that the coal slag on the belt is away from the measuring arm under the action of wind, avoiding the interference of the coal slag on the operation of the measuring arm. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is the first overall structural diagram of the utility model;

[0019] Figure 2 This is the second overall structural diagram of the utility model;

[0020] Figure 3 This is an exploded view of the outer wheel of the utility model;

[0021] Figure 4 This is a schematic diagram of the measuring state of the measuring arm of the utility model;

[0022] Figure 5 This is a system diagram of the utility model.

[0023] In the figure: 1. mounting plate; 2. end plate; 3. controller; 4. alarm; 5. outer wheel; 6. measuring arm; 601. contact wheel; 602. annular groove; 603. connecting shaft; 604. sleeve; 605. sliding block; 7. exhaust channel; 8. exhaust groove; 9. air inlet pipe; 10. groove; 11. inner wheel; 12. resistance ring; 13. electrode sheet; 14. mounting sheet; 15. fixed shaft; 16. torsion spring. DETAILED DESCRIPTION

[0024] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the present invention will be further described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] like Figure 1-5 As shown, the utility model provides a coal feeder belt deviation alarm device, comprising a mounting plate 1, two end plates 2 are fixedly arranged on the front side of the mounting plate 1, a controller 3 and an alarm 4 are fixedly arranged on one of the end plates 2, and a measuring arm 6 is arranged on the front side of the mounting plate 1;

[0026] The measuring arm 6 comprises a sleeve 604, a sliding block 605 is arranged inside the sleeve 604, and the sliding block 605 can slide along a straight line inside the sleeve 604, and a connecting shaft 603 is arranged at one end of the sliding block 605 facing the opening of the sleeve 604 through a bearing;

[0027] One end of the connecting shaft 603 extends to the outside of the sleeve 604 and is fixed with a contact wheel 601 that can be placed on the coal feeder belt. An annular groove 602 is opened at the outer end of the contact wheel 601, and the edge of the belt can be stuck in the annular groove 602.

[0028] The contact wheel 601 is placed on the edge of the coal feeder belt, hereinafter referred to as the belt, and the corners of the belt edge are stuck in the annular groove 602, so that the measuring arm 6 contacts the belt and can sense the position change of the belt. During the movement of the belt, the contact wheel 601 rotates with the movement of the belt and drives the connecting shaft 603 to rotate synchronously with it. When the belt deviates, the contact wheel 601 stuck at the edge of the belt will move synchronously with the deviation of the belt, and make the sliding block 605 slide inside the sleeve 604 and the connecting shaft 603 retract inside the sleeve 604. In this way, no matter how the belt deviates and moves, the contact wheel 601 can move synchronously with it to avoid contact with the belt at other positions and hinder the operation of the belt.

[0029] During the operation of the measuring arm 6, the cinders on the belt may move to the contact position between the contact wheel 601 and the belt and affect the measuring arm 6, resulting in errors in the detection of the belt. Figure 1 , 2 As shown, a detachable exhaust passage 7 is provided at the front side of the mounting plate 1, two air inlet pipes 9 are fixedly provided at the top of the exhaust passage 7, and an exhaust slot 8 is provided on the side of the exhaust passage 7 facing the belt.

[0030] One end of the air inlet pipe 9 is connected to a device that can generate wind, such as a fan or an air pump, so that the wind can enter the exhaust channel 7 through the air inlet pipe 9. The air entering the exhaust channel 7 is finally blown out through the exhaust slot 8 and blown toward the belt, so that the coal slag on the belt is away from the measuring arm 6 under the action of wind, thereby preventing the coal slag from interfering with the operation of the measuring arm 6.

[0031] When the belt deviates, prompt reminders are required, such as Figure 1 , 3 As shown in FIG. 5 , an inner wheel 11 is provided between the two end plates 2, and a resistance ring 12 is fixedly provided at the outer end of the inner wheel 11;

[0032] An outer wheel 5 is also provided between the two end plates 2. A groove 10 is provided on the side of the outer wheel 5 facing the inner wheel 11. The inner wheel 11 is embedded in the groove 10. An electrode sheet 13 in contact with the outer end of the resistor coil 12 is embedded on the inner wall of the groove 10. The sleeve 604 is fixed at the outer end of the outer wheel 5. The sleeve 604 can cause the outer wheel 5 to rotate.

[0033] The resistor coil 12 and the electrode sheet 13 are both arranged at the input end of the controller 3, and the alarm 4 is arranged at the output end of the controller 3, and reflects the deviation of the belt according to the change of the resistance in the circuit.

[0034] Since the sleeve 604 is fixed to the outer end of the outer wheel 5, when the belt deviates, the measuring arm 6 will rotate as a whole, thereby driving the outer wheel 5 to rotate. The outer wheel 5 drives the electrode sheet 13 on the inner wall of the groove 10 to rotate, so that the contact position between the electrode sheet 13 and the resistor coil 12 changes, and the resistance value in the circuit changes accordingly. At this time, the controller 3 senses the resistance value change and controls the alarm 4 to sound an alarm so that the belt can be corrected in time.

[0035] In the process of detecting belt deviation, the contact wheel 601 needs to be in close contact with the belt, such as Figure 1 , 3 As shown in 4, a mounting plate 14 is fixedly provided on the inner wheel 11, and clamps are provided on both the front and rear sides of the mounting plate 14 through bolts, and the clamps are fixed on one of the end plates 2, so that the inner wheel 11 can be installed or removed.

[0036] A fixed shaft 15 is provided on the other end plate 2 through a bearing, one end of the fixed shaft 15 is fixedly connected to the outer wheel 5, a torsion spring 16 is provided between the other end plate 2 and the outer wheel 5, and the two ends of the torsion spring 16 are respectively fixedly connected to the outer wheel 5 and the other end plate 2, and the contact wheel 601 can be in close contact with the belt by means of the elastic force of the torsion spring 16. The elastic force of the torsion spring 16 does not need to be too large, and it is sufficient to ensure that the contact wheel 601 always keeps in contact with the belt.

[0037] In normal state, the torsion spring 16 is in a tightened state, and the elastic force of the torsion spring 16 drives the fixed shaft 15 and the outer wheel 5, and drives the measuring arm 6, so that the contact wheel 601 is in close contact with the belt.

[0038] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. The technicians in this industry should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A coal feeder belt deviation alarm device, comprising a mounting plate (1), two end plates (2) are fixedly provided on the front side of the mounting plate (1), a controller (3) and an alarm (4) are fixedly provided on one of the end plates (2), and the device is characterized in that: A measuring arm (6) is provided on the front side of the mounting plate (1); The measuring arm (6) comprises a sleeve (604), a sliding block (605) is arranged inside the sleeve (604), the sliding block (605) can slide along a straight line inside the sleeve (604), and a connecting shaft (603) is arranged at one end of the sliding block (605) facing the opening of the sleeve (604) via a bearing; One end of the connecting shaft (603) extends to the outside of the sleeve (604) and is fixedly provided with a contact wheel (601) that can be placed on the coal feeder belt. An annular groove (602) is formed at the outer end of the contact wheel (601), and the edge of the coal feeder belt can be stuck in the annular groove (602).

2. A coal feeder belt deviation alarm device according to claim 1, characterized in that: A detachable exhaust passage (7) is provided on the front side of the mounting plate (1), two air inlet pipes (9) are fixedly provided on the top of the exhaust passage (7), and an exhaust slot (8) is provided on the side of the exhaust passage (7) facing the coal feeder belt.

3. The coal feeder belt deviation alarm device according to claim 1 is characterized in that: An inner wheel (11) is provided between the two end plates (2), and a resistance ring (12) is fixedly provided at the outer end of the inner wheel (11); An outer wheel (5) is also provided between the two end plates (2); a groove (10) is provided on the side of the outer wheel (5) facing the inner wheel (11); the inner wheel (11) is embedded in the groove (10); an electrode sheet (13) in contact with the outer end of the resistor coil (12) is embedded on the inner wall of the groove (10); and the sleeve (604) is fixedly provided on the outer end of the outer wheel (5).

4. A coal feeder belt deviation alarm device according to claim 3, characterized in that: The resistance coil (12) and the electrode sheet (13) are both arranged at the input end of the controller (3), and the alarm (4) is arranged at the output end of the controller (3).

5. The coal feeder belt deviation alarm device according to claim 3 is characterized in that: A mounting plate (14) is fixedly provided on the inner wheel (11), and clamping plates are provided on both the front and rear sides of the mounting plate (14) via bolts, and the clamping plates are fixedly provided on one of the end plates (2).

6. A coal feeder belt deviation alarm device according to claim 5, characterized in that: A fixed shaft (15) is provided on the other end plate (2) via a bearing, one end of the fixed shaft (15) is fixedly connected to the outer wheel (5), a torsion spring (16) is provided between the other end plate (2) and the outer wheel (5), and two ends of the torsion spring (16) are respectively fixedly connected to the outer wheel (5) and the other end plate (2).

Images