Emulsion lubricating device for vertical roller and vertical wheel

Abstract

The utility model relates to a vertical roller and vertical wheel emulsion lubricating device which comprises a vertical roller and a vertical wheel, spraying pipelines are arranged above the vertical roller and the vertical wheel, the spraying pipelines are connected with a pump, the pump is connected with an emulsion oil tank, the vertical roller and the vertical wheel are provided with motors, the motors are provided with control circuits, and the control circuits are connected with the vertical roller and the vertical wheel. The control circuit comprises a controller and a frequency converter; a driving circuit is connected between the controller and the frequency converter, the output end of the driving circuit is connected with an electromagnetic valve, and the electromagnetic valve is arranged on the spraying pipeline; and the controller is electrically connected with the pump machine. The drive circuit is combined with the controller to enable the motor, the pump machine and the electromagnetic valve to work in a linkage mode, and emulsion spraying and stopping are accurately controlled.

Description

Technical Field

[0001] This utility model belongs to the field of aluminum processing technology, and specifically relates to a vertical roller and wheel emulsion lubrication device. Background Technology

[0002] A vertical rolling mill is a metal processing device used to process metal materials into desired shapes and sizes through rolling. The process of a vertical rolling mill mainly includes three steps: feeding, rolling, and unloading. During this process, hot-rolled emulsion is used to lubricate the vertical rolls and rollers. The emulsion is a milky-white liquid formed by the reaction of oil and water with an emulsifier. During rolling, the emulsion is sprayed onto the surface of the vertical rolls and rollers through spray pipes. The emulsion can reduce the friction between the vertical rolls / rolls and the metal material, reduce rolling force, reduce roll wear, prevent metal adhesion, and thus improve the surface quality of the finished product.

[0003] The existing spray pipes are equipped with manual valves, which are always open during production. The spray pipes are constantly spraying emulsion, but the vertical rolling mill is not always working, thus wasting the emulsion. Summary of the Invention

[0004] This invention addresses the problem of emulsion waste caused by existing lubrication devices by providing a vertical roller emulsion lubrication device. It incorporates a drive circuit and controller to enable the motor, pump, and solenoid valve to work in tandem, achieving precise control over emulsion spraying and stopping.

[0005] To achieve the above objectives, this utility model proposes a vertical roller and vertical wheel emulsion lubrication device, including a vertical roller and a vertical wheel. A spray pipe is provided above the vertical roller and the vertical wheel. The spray pipe is connected to a pump. The pump is connected to an emulsion oil tank. A motor is provided in both the vertical roller and the vertical wheel. The motor is equipped with a control circuit. The control circuit includes a controller and a frequency converter.

[0006] A drive circuit is connected between the controller and the frequency converter, and a solenoid valve is connected to the output end of the drive circuit. The solenoid valve is installed on the spray pipe.

[0007] The controller is electrically connected to the pump.

[0008] Furthermore, the drive circuit includes a first relay and a second relay, the coils of the first relay and the second relay are connected in parallel, and the coils of the first relay and the second relay are electrically connected to the controller.

[0009] The normally open contact of the first relay is connected to the frequency converter;

[0010] The normally open contact of the second relay is connected to the coil of the solenoid valve.

[0011] The relay is easy to control and easy to wire. When the motor is working, the second relay controls the solenoid valve to be energized and in the open state.

[0012] Furthermore, a pressure sensor is installed on the spray pipe, and the output end of the pressure sensor is connected to the input end of the controller.

[0013] Setting up a pressure sensor to detect the pressure inside the sprinkler pipe provides the hardware basis for the motor to stop when the pressure in the sprinkler pipe is abnormal.

[0014] Furthermore, the controller is communicatively connected to an HMI module. The HMI module facilitates human-machine interaction.

[0015] Furthermore, a protection circuit is provided between the pump and the controller. The protection circuit includes a third relay and a contactor. The coil of the third relay is connected to the normally open contact of the second relay, and the normally open contact of the third relay is connected to the coil of the contactor.

[0016] The pump is connected to the power supply through the normally open contact of the contactor.

[0017] After the second relay is energized, the third relay and the contactor are energized in sequence, thereby energizing the pump body to deliver the emulsion in the emulsion tank into the spray pipe, achieving precise control of the emulsion lubrication operation.

[0018] The beneficial effects of this utility model through the above technical solution are as follows:

[0019] This invention achieves precise control over emulsion spraying and stopping. A drive circuit is installed on the frequency converter. Powering the frequency converter requires a controller to energize the drive circuit, which is electrically connected to a solenoid valve. When the drive circuit is energized, both the frequency converter and the solenoid valve are powered, achieving signal interlocking between the motor and the solenoid valve. When the motor drives the vertical roller and wheel, the solenoid valve opens, the controller energizes the pump, and the pump delivers the emulsion from the emulsion tank into the spray pipe. The emulsion exits through the opening in the spray pipe via the solenoid valve, spraying onto the surface of the vertical roller and wheel. Similarly, when the drive circuit is de-energized, the motor and solenoid valve are simultaneously de-energized, the controller de-energizes the pump, and emulsion spraying stops. This achieves power circulation of the emulsion, saving production costs. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a vertical roller and wheel emulsion lubrication device according to the present invention;

[0021] Figure 2 This is one of the circuit diagrams for an emulsion lubrication device for vertical rollers and wheels according to this utility model;

[0022] Figure 3 This is the second circuit diagram of a vertical roller emulsion lubrication device according to the present invention.

[0023] Reference numerals: 1 is the spray pipe, 2 is the pump, 3 is the emulsion tank, 4 is the motor, 5 is the controller, 6 is the frequency converter, 7 is the solenoid valve, 8 is the first relay, 9 is the second relay, 10 is the pressure sensor, 11 is the HMI module, 12 is the third relay, and 13 is the contactor. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0025] Example 1

[0026] like Figures 1-3 As shown, a vertical roller and vertical wheel emulsion lubrication device includes a vertical roller and a vertical wheel. A spray pipe 1 is provided above the vertical roller and the vertical wheel. The spray pipe 1 is connected to a pump 2. The pump 2 is connected to an emulsion oil tank 3. A motor 4 is provided on both the vertical roller and the vertical wheel. The motor 4 is provided with a control circuit. The control circuit includes a controller 5 and a frequency converter 6.

[0027] A drive circuit is connected between the controller 5 and the frequency converter 6. The output terminal of the drive circuit is connected to a solenoid valve 7, which is installed on the spray pipe 1.

[0028] The controller 5 is electrically connected to the pump 2.

[0029] The driving circuit includes a first relay 8 and a second relay 9, the coils of the first relay 8 and the second relay 9 are connected in parallel, and the coils of the first relay 8 and the second relay 9 are electrically connected to the controller 5.

[0030] The normally open contact of the first relay 8 is connected to the frequency converter 6;

[0031] The normally open contact of the second relay 9 is connected to the coil of the solenoid valve 7.

[0032] A pressure sensor 10 is installed on the spray pipe 1, and the output end of the pressure sensor 10 is connected to the input end of the controller 5.

[0033] The controller 5 is communicatively connected to the HMI module 11.

[0034] A protection circuit is provided between the pump 2 and the controller 5. The protection circuit includes a third relay 12 and a contactor 13. The coil of the third relay 12 is connected to the normally open contact of the second relay 9, and the normally open contact of the third relay 12 is connected to the coil of the contactor 13.

[0035] Pump 2 is connected to the power supply through the normally open contact of the contactor 13.

[0036] In this embodiment, the controller 5 is a PLC controller for the vertical rolling mill, the frequency converter 6 is an ABB ACS880 model, and the pressure sensor 10 is a Keyence PG series pressure sensor. Control parameters can be input to the PLC controller via the HMI module 11.

[0037] During operation, the PLC controller energizes the coil of the first relay 8, and simultaneously energizes the coil of the second relay 9. The normally open contact of the first relay 8 closes, energizing the frequency converter 6, which in turn powers the motor 4. The normally open contact of the second relay 9 closes, energizing the coil of the solenoid valve 7, opening its valve port. After the normally open contact of the second relay 9 closes, the coil of the third relay 12 is energized, closing its normally open contact and energizing the coil of the contactor 13. When the coil of the contactor 13 is energized, its normally open contact closes, energizing the pump 2. The pump 2 delivers the emulsion from the emulsion tank 3 into the spray pipe 1, which then exits through the opening of the spray pipe via the solenoid valve 7, spraying it onto the vertical rollers and wheels.

[0038] Upon shutdown, the PLC controller receives a shutdown command, de-energizing the coils of the first relay 8 and the second relay 9. The normally open contacts of the first relay 8 and the second relay 9 reset, thereby de-energizing the frequency converter 6, stopping the motor 4, and simultaneously de-energizing the coil of the solenoid valve 7, closing the valve port. Then, the coils of the third relay 12 and the contactor 13 are sequentially de-energized, thus de-energizing and stopping the pump 2. After the emulsion in the spray pipe 1 has finished flowing, the emulsion spraying stops.

[0039] The embodiments described above are merely preferred embodiments of this utility model and are not intended to limit the scope of implementation of this utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the patent claims of this utility model should be included within the scope of the patent application of this utility model.

Claims

1. A vertical roller and wheel emulsion lubrication device, comprising a vertical roller and a wheel, wherein a spray pipe (1) is provided above both the vertical roller and the wheel, the spray pipe (1) is connected to a pump (2), and the pump (2) is connected to an emulsion oil tank (3), characterized in that, Both the vertical roller and the vertical wheel are equipped with motors (4), and the motors (4) are equipped with control circuits, including controllers (5) and frequency converters (6). A drive circuit is connected between the controller (5) and the frequency converter (6), and a solenoid valve (7) is connected to the output end of the drive circuit. The solenoid valve (7) is installed on the spray pipe (1). The controller (5) is electrically connected to the pump (2).

2. The emulsion lubrication device for vertical rollers and wheels according to claim 1, characterized in that, The driving circuit includes a first relay (8) and a second relay (9), the coil of the first relay (8) and the coil of the second relay (9) are connected in parallel, and the coil of the first relay (8) and the coil of the second relay (9) are electrically connected to the controller (5). The normally open contact of the first relay (8) is connected to the frequency converter (6); The normally open contact of the second relay (9) is connected to the coil of the solenoid valve (7).

3. The emulsion lubrication device for vertical rollers and deflectors according to claim 1, characterized in that, A pressure sensor (10) is installed on the spray pipe (1), and the output end of the pressure sensor (10) is connected to the input end of the controller (5).

4. The emulsion lubrication device for vertical rollers and wheels according to claim 1, characterized in that, The controller (5) is communicatively connected to the HMI module (11).

5. The emulsion lubrication device for vertical rollers and wheels according to claim 2, characterized in that, A protection circuit is provided between the pump (2) and the controller (5). The protection circuit includes a third relay (12) and a contactor (13). The coil of the third relay (12) is connected to the normally open contact of the second relay (9), and the normally open contact of the third relay (12) is connected to the coil of the contactor (13). The pump (2) is connected to the power supply through the normally open contact of the contactor (13).

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