Device for detecting running stall of humidifying and uniformly-mixing stirrer

Abstract

The utility model discloses an operation stall detection device for a humidifying and blending stirrer, which belongs to the field of stall detection of mechanical transmission systems and comprises a metal induction block, a proximity switch and a stall control box, and the proximity switch and the stall control box are electrically connected with each other. The metal induction block is arranged on an auxiliary shaft of the humidifying and blending stirrer, and the proximity switch is arranged on one side of the auxiliary shaft of the humidifying and blending stirrer and used for inducting corresponding electric signals collected by the metal induction block and transmitting the electric signals to the stall control box. The stall control box is used for being electrically connected with a humidifier control box, the stall control box receives the electric signals collected by the proximity switch and judges whether the auxiliary shaft of the humidifying and blending stirrer stalls in operation or not, and if the auxiliary shaft of the humidifying and blending stirrer stalls in operation, the stall control box sends an abnormal early warning signal to the humidifier control box. And upstream equipment and the humidifying and uniformly-mixing stirrer are stopped from running.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of mechanical transmission system stall detection, especially relates to a humidification mixing uniform mixer operation stall detection device. BACKGROUND

[0002] The humidification mixing uniform mixer used for sintering machine dust removal ash storage bin unloading participates in the continuous burden production operation of the sintering machine for 24 hours and is important production equipment without manning. When the transmission fault, speed reducer fault, shaft coupling fault and transmission out of synchronization occur in the humidification mixing uniform mixer, the driving motor is in operation while the double shaft of the humidification mixing uniform mixer is in outage. SUMMARY

[0003] In view of the above background art, the utility model aims at providing a humidification mixing uniform mixer operation stall detection device to solve the problem that the upstream equipment cannot detect whether the humidification mixing uniform mixer has operation stall detection fault in real time due to the lack of the operation stall detection device.

[0004] In order to achieve the above utility model purposes, the utility model adopts the following technical scheme:

[0005] The utility model provides a humidification mixing uniform mixer operation stall detection device which comprises a metal induction block, a proximity switch and a stall control box which are electrically connected with each other.

[0006] The stall control box is electrically connected with the humidification machine control box and receives the electric signal collected by the proximity switch to judge whether the auxiliary shaft of the humidification mixing uniform mixer is in operation stall.

[0007] Further, the proximity switch is a PNP type sensor which has the characteristics of travel switch and micro switch and also has sensing performance, reliable action, stable performance, fast response frequency, long service life, strong anti-interference ability, waterproof and corrosion resistance and other characteristics.

[0008] Further, the metal sensing block is in a strip structure, and is arranged on the circumferential outer wall of the auxiliary shaft of the humidifying and mixing blender, and the length direction of the metal sensing block is in the same direction as the axial direction of the auxiliary shaft of the humidifying and mixing blender.

[0009] Further, the metal sensing block is arranged at the end of the auxiliary shaft of the humidifying and mixing blender.

[0010] Further, the stall control box and the humidifier control box are provided with a control circuit, and the control circuit comprises an inductive circuit and a cut-off circuit arranged in parallel;

[0011] The inductive circuit comprises a contactor contact point, one end of the contactor contact point is connected with a power supply through a circuit breaker, and the other end is provided with a proximity switch and an intermediate relay contact point in parallel; one end of the proximity switch is provided with a first time relay coil and an intermediate relay coil in parallel; and one end of the intermediate relay contact point is connected with a second time relay coil.

[0012] The cut-off circuit is provided with a manual contact point, a first time relay contact point, a second time relay switch and a contactor coil in series.

[0013] The principle of the operation stall detection device of the humidifying and mixing blender is as follows: the total circumference C of the auxiliary shaft of the humidifying and mixing blender is the sum of the circumference C1 of the metal sensing block and the remaining circumference C2 of the outer circle of the auxiliary shaft; when the auxiliary shaft rotates in a circle, the total time T required for one rotation of the auxiliary shaft is the sum of the inductive time T1 of the proximity switch to the metal sensing block and the non-inductive time T2 of the remaining circumference of the outer circle of the auxiliary shaft to the metal sensing block; two time relays are used to set and detect the inductive time to the metal sensing block and the non-inductive time of the remaining circumference of the outer circle of the auxiliary shaft to the metal sensing block, respectively.

[0014] Under normal circumstances, the time required for one rotation of the auxiliary shaft is T, and the inductive time T1 of the proximity switch to the metal sensing block and the non-inductive time T2 of the remaining circumference of the outer circle of the auxiliary shaft to the metal sensing block are contained in the time period T. When T1 < KT1 set time and T2 < KT2 set time are met at the same time, it indicates that the humidifying and mixing blender is running normally; otherwise, it indicates that the humidifying and mixing blender is running at stall, and the system judges that it is a mechanical transmission fault, and then automatically triggers the driving motor control loop, disconnects the main loop contactor, interlocks the cut-off of the upstream equipment feeding for protection, and sends an abnormal early warning signal to the background control system.

[0015] The beneficial effects of the utility model are as follows:

[0016] The utility model discloses a kind of humidifying mixing uniformity mixer operating stall detection devices, real-time monitoring production equipment operating state, guarantee equipment failure When it can be parked in time and simultaneously cut off upstream equipment feeding and send abnormal early warning signal to background control system, prompt control personnel to take emergency measures, with Equipment cost is low, simple structure, stable performance, strong reliability, compact size, installation is convenient, little by the scene environment influence, it is advantageous to save cost, worthy of popularization and application. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 It is a kind of humidifying mixing uniformity mixer operating stall detection device's structural schematic diagram.

[0018] Fig. 2 It is the structural schematic diagram of metal induction block installation in humidifying mixing uniformity mixer auxiliary shaft.

[0019] Fig. 3 It is the principle block diagram of control circuit.

[0020] Among them, 1, metal induction block;2, proximity switch;3, stall control box;4, humidifier control box;5, humidifying mixing uniformity mixer auxiliary shaft;6, contactor contact;7, circuit breaker;9, intermediate relay contact;10, first time relay coil;11, intermediate relay coil;12, second time relay coil;13, manual contact;14, first time relay contact;15, second time relay contact;16, contactor coil. DETAILED DESCRIPTION

[0021] The specific embodiment of the utility model is described below, so that the person skilled in the art can understand the utility model, but it should be clear that the utility model is not limited to the scope of the specific embodiment, for the person skilled in the ordinary skill in the art, as long as various changes are within the spirit and scope of the utility model defined and determined by the appended claims, these changes are obvious, all the utility model creations using the utility model concept are within the scope of protection.

[0022] As Figs. 1-3 Indicated, the utility model provides a kind of humidifying mixing uniformity mixer operating stall detection device, it includes metal induction block 1 and the proximity switch 2 and stall control box 3 of mutual electric connection;The metal induction block 1 is set on humidifying mixing uniformity mixer auxiliary shaft 5, the proximity switch 2 is set on the side of humidifying mixing uniformity mixer auxiliary shaft 5 for inductive metal induction block 1 gather corresponding electric signal and transmit electric signal to the stall control box 3.

[0023] The stall control box 3 is electrically connected with the humidifier control box 4, the stall control box 3 receives the electric signal collected by the proximity switch 2, judges whether the auxiliary shaft 5 of the humidifying and mixing stirrer runs stall, if the auxiliary shaft 5 of the humidifying and mixing stirrer runs stall, the stall control box 3 sends an abnormal early warning signal to the humidifier control box 4, and the upstream equipment and the humidifying and mixing stirrer are stopped.

[0024] The stall detection device for the humidifying and mixing stirrer in the utility model detects the stall of the auxiliary shaft of the humidifying and mixing stirrer in real time through the proximity switch and the stall control box, when the stall of the auxiliary shaft of the humidifying and mixing stirrer is found, the humidifier control box cuts off the power supply of the motor in the humidifying and mixing stirrer, the motor stops running, when the motor stops running, the interlocking protection between the motor and the upstream equipment is provided, the upstream equipment detects that the humidifying and mixing stirrer is in the stop state, the interlocking protection stoppage due to the downstream equipment failure is executed, and various accidents such as the equipment damage caused by the accumulation of continuously transported dust materials, the bursting of the bin and the unorganized dust scattering are avoided.

[0025] Preferably but not limitedly, the proximity switch 2 is a PNP type sensor, the PNP type sensor has the characteristics of the travel switch and the micro switch, simultaneously has the sensing performance, the action is reliable, the performance is stable, the response frequency is fast, the service life is long, the anti-interference ability is strong, the waterproof corrosion-resistant and other characteristics.

[0026] Specifically, the metal sensing block 1 is in a strip structure, the metal sensing block 1 is arranged on the circumferential outer wall of the auxiliary shaft 5 of the humidifying and mixing stirrer, and the length direction of the metal sensing block 1 is same as the axis direction of the auxiliary shaft 5 of the humidifying and mixing stirrer.

[0027] Specifically, the stall control box 3 and the humidifier control box 4 are provided with control circuits, and the control circuits include in-parallel sensing circuits and cut-off circuits.

[0028] The sensing circuit includes a contactor contact 6, one end of the contactor contact 6 is connected with a power supply through a breaker 7, the other end is in parallel with a proximity switch 2 and an intermediate relay contact 9; one end of the proximity switch 2 is in parallel with a first time relay coil 10 and an intermediate relay coil 11; one end of the intermediate relay contact 9 is connected with a second time relay coil 12.

[0029] The cut-off circuit is in series with a manual contact 13, a first time relay contact 14, a second time relay contact 15 and a contactor coil 16.

[0030] The principle of the wet mixing and stirring machine running stall detection device is that the total circumference C of the wet mixing and stirring machine auxiliary shaft 5 is the sum of the circumference C1 of the metal sensing block 1 and the remaining circumference C2 of the auxiliary shaft outer circle. When the auxiliary shaft rotates in a circle, the total time T required for the auxiliary shaft to rotate one circle is the sum of the sensing time T1 of the proximity switch 2 sensing the metal sensing block 1 and the non-sensing time T2 of the remaining circumference of the auxiliary shaft outer circle not sensing the metal sensing block 1. Two time relays are used to set and detect the sensing time of the metal sensing block 1 and the non-sensing time of the remaining circumference of the auxiliary shaft outer circle not sensing the metal sensing block 1, respectively.

[0031] Under normal circumstances, the time required for the auxiliary shaft to rotate one circle is T, and the time period T includes the sensing time T1 of the proximity switch 2 sensing the metal sensing block 1 and the non-sensing time T2 of the remaining circumference of the auxiliary shaft outer circle not sensing the metal sensing block 1. When T1 < KT1 set time and T2 < KT2 set time are satisfied at the same time, it indicates that the wet mixing and stirring machine is running normally. Otherwise, it indicates that the wet mixing and stirring machine is running stall, and the system judges that it is a mechanical transmission fault, and automatically triggers the driving motor control loop, disconnects the main loop contactor, interlocks and cuts off the upstream equipment supply, and sends an abnormal early warning signal to the background control system.

[0032] In summary, the wet mixing and stirring machine running stall detection device of the utility model can monitor the running state of the production equipment in real time, ensure that the equipment can be stopped in time when a fault occurs, cut off the supply of the upstream equipment at the same time, send an abnormal early warning signal to the background control system, prompt the operator to take emergency measures, has the advantages of low equipment cost, simple structure, stable performance, high reliability, compact size, convenient installation, small influence of the site environment, cost saving, etc., and is worth popularizing and applying.

Claims

1. A device for detecting stall of a humidifying and mixing machine, characterized in that: It includes a metal sensing block and a proximity switch and a stall control box electrically connected to each other; the metal sensing block is arranged on the secondary shaft of the humidifying and mixing mixer, and the proximity switch is arranged on one side of the secondary shaft of the humidifying and mixing mixer to sense the metal sensing block, collect corresponding electrical signals, and transmit the electrical signals to the stall control box; The stall control box is used to be electrically connected to the humidifier control box. The stall control box receives the electrical signal collected by the proximity switch to determine whether the secondary shaft of the humidifier mixer is stalled. If the secondary shaft of the humidifier mixer is stalled, the stall control box will send an abnormal warning signal to the humidifier control box to stop the operation of the upstream equipment and the humidifier mixer.

2. The humidifying mixer stall detection device according to claim 1, characterized in that: The proximity switch is a PNP type sensor.

3. The humidifying mixer stall detection device according to claim 2, characterized in that: The metal sensor block is in a long strip structure and is arranged on the circumferential outer wall of the secondary shaft of the humidifying mixer. The length direction of the metal sensor block is in the same direction as the axial direction of the secondary shaft of the humidifying mixer.

4. The device for detecting stall of a humidifying and mixing machine according to claim 3, characterized in that: The metal induction block is arranged at the end of the secondary shaft of the humidifying and mixing mixer.

5. The device for detecting stall of a humidifying and mixing machine according to claim 3, characterized in that: The stall control box and the humidifier control box are provided with a control circuit, and the control circuit includes a parallel sensing circuit and a cut-off circuit; The induction circuit includes a contactor contact, one end of which is connected to a power source via a circuit breaker, and the other end of which is connected in parallel with a proximity switch and an intermediate relay contact; one end of the proximity switch is connected in parallel with a first time relay coil and an intermediate relay coil; One end of the intermediate relay contact is connected to the second time relay coil; The cut-off circuit is connected in series with a manual contact, a first time relay contact, a second time relay contact and a contactor coil.

Images