Anti-pressing early warning system for stirring tank

Abstract

The utility model provides a stirring tank anti-dead-pressing early warning system, which comprises a stirring tank, the side part of the stirring tank is respectively provided with an overflow pipeline, a reclaimed water pipe, an ore inlet pipe and an ore discharge pipe, the overflow pipeline is provided with a first electric valve, the reclaimed water pipe is provided with a second electric valve, the ore inlet pipe is provided with a third electric valve, and the ore discharge pipe is provided with a second electric valve. The ore discharging pipe is provided with a fourth electric valve, a stirring shaft and an inner wall liquid level meter are arranged at the position of a middle shaft in the stirring tank, a motor is arranged above the stirring shaft, and a current sensor is arranged on the motor. According to the utility model, the liquid level of the stirring tank and the current of the motor during operation can be monitored, and an early warning is given out after the liquid level exceeds a set critical liquid level height or the current of the motor exceeds a set critical current, so that ore dressing workers are helped to adjust the ore grinding fineness in time.

Description

Technical Field

[0001] The utility model belongs to the technical field of mineral processing equipment and relates to an anti-crushing early warning system for a stirring tank. Background Art

[0002] As the link between grinding and flotation in the mineral processing process, the mixing tank plays a vital role in the mineral processing process. The mixing tank is mostly used to adjust the overflow product of the grinding cyclone, the main place for adding flotation reagents, and to provide a certain amount of slurry flow kinetic energy for flotation operations. In order to ensure the fluidity of the slurry in the mixing tank, it should be avoided as much as possible to prevent the slurry from being crushed and causing production to stop.

[0003] There is no early warning for the existing mixing tank to be crushed. Once crushed, the central axis of the mixing tank rotor will be deformed, and eccentricity may occur even if it is opened again. At the same time, the crushing of the mixing tank will also cause the motor to burn out. In addition, the crushing of the mixing tank will lead to production stagnation, causing economic losses on site.

[0004] The feed valve and discharge valve in the existing mixing tank are basically in the maximum normally open state. Once the liquid level, viscosity, particle size and other issues change, the operating status of the mixing tank cannot be warned in advance, resulting in an increased chance of the mixing tank being crushed. In addition, the traditional mixing tank is not equipped with a reclaimed water dilution pipeline. After the mixing tank is crushed, the equipment is difficult to clear, and the cleaning work of employees is more difficult, and the cleaning time is as long as 4-8 hours.

[0005] In summary, the problems existing in the prior art are as follows: the existing industrial mixing tank device does not provide an effective early warning device on the actual production control platform to prevent the mixing tank from being crushed. Once crushing occurs, it will not only cause irreversible damage to the mixing tank motor, rotor center shaft and other equipment and facilities, but also cause the system to stop, affect production and cause economic losses. In addition, the recovery and cleaning workload is large and the time is long. Utility Model Content

[0006] The purpose of the utility model is to provide a mixing tank anti-crushing early warning system to address the problems existing in the prior art, thereby solving the problem that the existing mixing tanks are not equipped with early warning devices for crushing, which will cause irreversible damage to equipment and facilities such as the mixing tank motor and the rotor center shaft once crushing occurs.

[0007] To this end, the utility model adopts the following technical solutions:

[0008] A stirring tank anti-crushing warning system comprises a stirring tank, wherein the sides of the stirring tank are respectively provided with an overflow pipe, a middle water pipe, an ore inlet pipe and an ore discharge pipe, the overflow pipe is provided with a first electric valve, the middle water pipe is provided with a second electric valve, the ore inlet pipe is provided with a third electric valve, the ore discharge pipe is provided with a fourth electric valve, a stirring shaft and an inner wall liquid level meter are provided at the inner center axis of the stirring tank, a motor is provided above the stirring shaft, and the two are transmission connected, and the motor is provided with a current sensor.

[0009] A stirring tank anti-crushing warning system also includes a controller and an alarm. The controller is electrically connected to a first electric valve, a second electric valve, a third electric valve, a fourth electric valve, a current sensor, a motor and the alarm respectively.

[0010] Furthermore, a motor base is provided on the top of the stirring tank, a motor bracket is provided on the top of the motor base, the motor bracket is connected to the motor, and a motor cover is provided above the motor.

[0011] Furthermore, the overflow pipe and the reclaimed water pipe are at the same horizontal position, and both are higher than the ore inlet pipe and the ore discharge pipe. The installation position of the ore discharge pipe is close to the bottom of the mixing tank, and the installation position of the ore inlet pipe is lower than that of the ore discharge pipe.

[0012] The beneficial effects of the utility model are:

[0013] The utility model can give early warning of the crushing of the mixing tank during the production process, and can adjust the liquid level of the mixing tank. It can also adjust and control the inlet and outlet valves according to the size of the motor current. In addition, if the mixing tank is crushed, it can be cleared and cleaned by diluting it with the reclaimed water valve. The utility model has the advantages of low cost, convenient operation and simple maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model.

[0015] In the figure, 1-mixing tank, 2-overflow pipe, 2a-first electric valve, 3-medium water pipe, 3a-second electric valve, 4-ore inlet pipe, 4a-third electric valve, 5-ore discharge pipe, 5a-fourth electric valve, 6-mixing shaft, 7-current sensor, 8-liquid level meter, 9-motor, 10-controller, 11-alarm, 12-motor base, 13-motor bracket, 14-motor cover. DETAILED DESCRIPTION

[0016] The technical solution of the utility model is described below in conjunction with the accompanying drawings and implementation methods.

[0017] like Figure 1As shown, a mixing tank anti-crushing warning system includes a mixing tank 1, and the sides of the mixing tank 1 are respectively provided with an overflow pipe 2, a reclaimed water pipe 3, an ore inlet pipe 4 and an ore discharge pipe 5; specifically, the overflow pipe 2 and the reclaimed water pipe 3 are located at the same horizontal position, and both are higher than the ore inlet pipe 4 and the ore discharge pipe 5, the installation position of the ore discharge pipe 5 is close to the bottom of the mixing tank 1, and the installation position of the ore inlet pipe 4 is lower than the installation position of the ore discharge pipe 5.

[0018] The overflow pipe 2 is provided with a first electric valve 2a, the intermediate water pipe 3 is provided with a second electric valve 3a, the ore inlet pipe 4 is provided with a third electric valve 4a, and the ore discharge pipe 5 is provided with a fourth electric valve 5a. A stirring shaft 6 is provided at the inner center axis of the stirring tank 1, and a liquid level meter 8 is provided at the inner wall. A motor 9 is provided above the stirring shaft 6, and the two are transmission connected. The motor 9 is provided with a current sensor 7.

[0019] The utility model further comprises a controller 10 and an alarm 11 . The controller 10 is electrically connected to the first electric valve 2 a , the second electric valve 3 a , the third electric valve 4 a , the fourth electric valve 5 a , the current sensor 7 , the motor 9 and the alarm 11 , respectively.

[0020] A motor base 12 is provided on the top of the stirring tank 1 , a motor bracket 13 is provided on the top of the motor base 12 , the motor bracket 13 is connected to the motor 9 , and a motor cover 14 is provided above the motor 9 .

[0021] The utility model is used in the following process:

[0022] The utility model detects the slurry level by setting a liquid level meter 8. Once the liquid level exceeds the upper limit of the preset value range, the signal is transmitted to the controller 10, and the controller 10 closes the third electric valve 4a and opens the fourth electric valve 5a. When the liquid level is lower than the lower limit of the preset value, the controller 10 opens the third electric valve 4a and closes the fourth electric valve 5a, thereby adjusting the flow balance of the inlet and outlet slurry to keep the liquid level within the preset value range.

[0023] The current sensor 7 can monitor the current of the motor 9 to reflect the load condition of the stirring shaft 6. Once the current rate is higher than the upper limit of the preset value range, the signal can be transmitted to the controller 10, causing the display platform of the main control room to display a warning that the stirring tank 1 is crushed. At the same time, the alarm 11 connected to the controller 10 will sound an alarm, and the controller 10 will open the fourth electric valve 5a, the first electric valve 2a and the second electric valve 3a, and close the third electric valve 4a. When the liquid level and the current are both within the preset value range, the controller 10 will close the fourth electric valve 5a, the first electric valve 2a and the second electric valve 3a, and open the third electric valve 4a; after the current of the motor 9 returns to normal, the alarm 11 eliminates the alarm, and the display platform of the main control room shows that the operation of the stirring tank 1 has returned to normal, which greatly reduces the probability of the stirring tank 1 being crushed in the actual production process.

Claims

1. A stirring tank anti-crushing warning system, characterized in that: The stirring tank (1) comprises an overflow pipe (2), a middle water pipe (3), an ore inlet pipe (4) and an ore discharge pipe (5) respectively arranged on the side of the stirring tank (1); the overflow pipe (2) is provided with a first electric valve (2a); the middle water pipe (3) is provided with a second electric valve (3a); the ore inlet pipe (4) is provided with a third electric valve (4a); the ore discharge pipe (5) is provided with a fourth electric valve (5a); a stirring shaft (6) is provided at the central axis of the stirring tank (1); a liquid level meter (8) is provided on the inner wall; a motor (9) is provided above the stirring shaft (6), and the two are in transmission connection; the motor (9) is provided with a current sensor (7); It also includes a controller (10) and an alarm (11), wherein the controller (10) is electrically connected to the first electric valve (2a), the second electric valve (3a), the third electric valve (4a), the fourth electric valve (5a), the current sensor (7), the motor (9) and the alarm (11), respectively.

2. The agitator tank anti-crushing warning system according to claim 1 is characterized in that: A motor base (12) is provided on the top of the stirring tank (1), a motor bracket (13) is provided on the top of the motor base (12), the motor bracket (13) is connected to the motor (9), and a motor cover (14) is provided above the motor (9).

3. The agitator tank anti-crushing warning system according to claim 1 is characterized in that: The overflow pipe (2) and the intermediate water pipe (3) are located at the same horizontal position, and both are higher than the ore inlet pipe (4) and the ore discharge pipe (5); the installation position of the ore discharge pipe (5) is close to the bottom of the stirring tank (1), and the installation position of the ore inlet pipe (4) is lower than the installation position of the ore discharge pipe (5).

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