Novel hot rolling roller way lubricating and cooling device

Abstract

The utility model discloses a novel hot rolling roller way lubricating and cooling device, which belongs to the technical field of aluminum processing and comprises a conveying roller way, a spraying mechanism, an oil storage barrel and a lubricating liquid recycling mechanism. The spraying mechanism is arranged on the conveying roller way, the oil storage barrel is located on one side of the conveying roller way and provided with an oil outlet and an oil inlet, the oil outlet is connected with a conveying pump, and a liquid outlet of the conveying pump is connected with the spraying mechanism. The lubricating liquid recycling mechanism comprises a trench, a recycling pool, a submersible pump and a control system. The trench is located under the conveying roller way and communicated with the recycling pool, the submersible pump is arranged in the recycling pool, a liquid outlet of the submersible pump is connected with an oil inlet of the oil storage barrel through a pipeline, a liquid level meter is arranged in the recycling pool, and the liquid level meter and the submersible pump are both electrically connected with the control system. The hot rolling roller way can be lubricated and cooled, lubricating liquid can be automatically recycled and reused, and inconvenience caused by manual operation is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of aluminum processing, in particular to a new hot rolling roller path lubricating and cooling device. Background Art

[0002] During the hot rolling process of aluminum plates, the plates need to be transported back and forth through the transport roller path into the hot rolling mill for rolling. At this time, friction will occur between the aluminum plates and the rollers of the transport roller path, and the temperature of the aluminum plates is relatively high. If the transport roller path is not cooled and lubricated, it is easy to produce the phenomenon of sticking aluminum, which affects the surface quality of the aluminum plates. The existing solution is: spraying lubricating liquid on the transport roller path through a spraying mechanism. On the one hand, the lubricating effect of the lubricating liquid is used to reduce friction; on the other hand, the transport roller path is cooled and temperature is reduced through the lubricating liquid. However, in the prior art, spraying lubricating liquid on the transport roller path through the spraying mechanism needs to be manually started and continuously works after starting until the production ends. By collecting the lubricating liquid falling from the spraying, it can be reused. However, the existing hot rolling roller path lubricating and cooling device needs to manually monitor the collection situation of the lubricating liquid and manually control the recovery pump for recovery, with cumbersome operation and low efficiency. How to automatically recover and reuse the lubricating liquid is an urgent problem to be solved. Summary of the Utility Model

[0003] The utility model provides a new hot rolling roller path lubricating and cooling device, which can automatically recover and reuse the lubricating liquid of the hot rolling roller path, avoiding the inconvenience brought by manual operation.

[0004] To achieve the above object, the technical solution adopted by the utility model is:

[0005] A new hot rolling roller path lubricating and cooling device includes a transport roller path, a spraying mechanism, an oil storage barrel and a lubricating liquid recovery mechanism; the spraying mechanism is arranged on the transport roller path, the oil storage barrel is located on one side of the transport roller path, which has an oil outlet and an oil inlet, the oil outlet is connected with a delivery pump, and the liquid outlet of the delivery pump is connected with the spraying mechanism;

[0006] The lubricating liquid recovery mechanism includes a trench, a recovery pool, a submersible pump and a control system; the trench is located directly below the transport roller path and is communicated with the recovery pool, the submersible pump is arranged in the recovery pool, its liquid outlet is connected with the oil inlet of the oil storage barrel through a pipeline, a liquid level gauge is arranged in the recovery pool, and both the liquid level gauge and the submersible pump are electrically connected with the control system.

[0007] Furthermore, the transport roller table includes a frame, a plurality of rollers rotatably mounted on the frame, and at least three drive motors fixedly mounted on the frame; the plurality of rollers are divided into at least three groups, each group of rollers is transmission-connected to a drive motor, and each group of rollers contains 7-10 rollers; the drive motor is connected to a frequency converter, and each frequency converter can be connected to up to three drive motors.

[0008] Furthermore, the spray mechanism includes a main pipe and several branch pipes; the main pipe is located on one side of the transport roller frame, one end of which is connected to the liquid outlet of the conveying pump, and the other end is a closing mechanism, one end of several branch pipes is connected to the main pipe, and the other end is a closing structure; the several branch pipes are respectively installed on one side of several rollers, and multiple nozzles facing the rollers are arranged at intervals.

[0009] Furthermore, a filtering device is installed at the oil inlet of the oil storage barrel.

[0010] Furthermore, the ditch is low in the middle and high on both sides, and the slopes on both sides are 10-20 degrees.

[0011] Furthermore, the recovery pool is in a cube shape with a side length of 400-600 mm, and the volume of the oil storage barrel is greater than the volume of the recovery pool.

[0012] Furthermore, a protective filter is provided above the recovery pool.

[0013] Furthermore, the control system includes a circuit breaker, a contactor, an overheat protector, a relay and a button assembly; the circuit breaker, the contactor and the overheat protector are connected in sequence between the submersible pump and the power supply, and the contactor is connected to the liquid level meter through a relay; the button assembly includes an emergency stop button, a control mode switching button and a manual start and stop button.

[0014] Due to the adoption of the above technical solution, the utility model has the following beneficial effects:

[0015] 1. The utility model can automatically recycle and reuse the lubricating fluid of the hot rolling roller table, avoiding the inconvenience caused by manual operation. The utility model is provided with a liquid level gauge in the recovery pool to monitor the liquid level in the recovery pool. When the liquid level is lower than the set minimum value, the submersible pump stops to avoid dry pumping and burning the pump. When the liquid level is higher than the set maximum value, the submersible pump is started to transport the lubricating fluid to the oil storage barrel to avoid the lubricating fluid in the recovery pool from overflowing. Compared with traditional manual control or single liquid level control, the utility model adopts dual liquid level control to avoid the defects of dry pumping and burning the pump and frequent pump starting, and improve the work efficiency of operators.

[0016] 2. The control system of the lubricating fluid recovery mechanism in the present utility model includes a circuit breaker, a contactor, a thermal protector, a relay, and a button assembly. The circuit breaker controls the power supply, the contactor controls the start and stop of the submersible pump, the thermal protector can protect the submersible pump from overload, the relay is used to connect the electrical signal of the liquid level gauge and the start and stop signal of the contactor, and is the key to realizing the automatic control of the submersible pump; the button assembly is used for emergency stop, switching control modes, and manual control. The control system composed of the above components has the advantages of simplicity, convenient installation, and easy maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 FIG. 6 is a schematic structural diagram of a novel hot rolling roller table lubricating and cooling device proposed in Embodiment 1 of the present utility model;

[0018] Figure 2 is Figure 1 a partial enlarged view of part A in FIG.

[0019] Figure 3 FIG. 16 is a control schematic diagram of the lubricating fluid recovery mechanism proposed in Embodiment 1 of the present utility model;

[0020] Among them, the reference numerals in the drawings are: 1-frame, 2-roller, 3-drive motor, 4-chain, 5-main pipe, 6-branch pipe, 7-nozzle, 8-transfer pump, 9-oil storage tank, 10-filter device, 11-gutter, 12-recovery pool, 13-submersible pump, 14-liquid level gauge, 15-protective filter screen. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0022] Embodiment 1

[0023] As Figure 1-2 shown, a novel hot rolling roller table lubricating and cooling device includes a transportation roller table, a spraying mechanism, an oil storage tank 9, and a lubricating fluid recovery mechanism.

[0024] Among them, the transportation roller table includes a frame 1, a plurality of rollers 2 rotatably installed on the frame 1, and at least three drive motors 3 fixedly installed on the frame 1. The function of the transportation roller table is to transport the ingot to the rolling mill for rolling. The transportation roller table controls the drive motor 3 through a frequency converter, and the drive motor 3 drives the transportation roller table through a speed reducer, a gearbox, and a chain 4.

[0025] A number of rollers 2 are divided into at least three groups, and each group of rollers 2 is drivingly connected to a driving motor 3. Each group of rollers 2 includes 7 - 10 rollers 2. The driving motor 3 is connected to a frequency converter, and each frequency converter can be connected to at most three driving motors 3. For example, the conveying roller table includes sixty rollers 2, which are divided into six groups, with ten rollers in each group, and are paired with six driving motors 3. Each driving motor 3 drives ten rollers 2, and six driving motors 3 are controlled by two frequency converters, with each frequency converter connected to three driving motors 3. Such an arrangement can reduce the number of driving motors 3 and frequency converters used. During the rolling process of the hot rolling mill, the start signal of the conveying roller table is sent to the frequency converter, and the driving motor 3 is controlled by the frequency converter to realize the rotation of the conveying roller table, and the ingot is transported back and forth into the rolling mill for rolling.

[0026] The oil storage barrel 9 is located on one side of the conveying roller table. It has an oil outlet and an oil inlet. The oil outlet is connected to a delivery pump 8, and the liquid outlet of the delivery pump 8 is connected to the spraying mechanism. In this embodiment, the delivery pump 8 uses a 1.5KW motor and its supporting pipeline pump to ensure that the spraying volume and pressure of each nozzle 7 meet the requirements of roller table lubrication.

[0027] The spraying mechanism is arranged on the conveying roller table. The spraying mechanism is used to lubricate the conveying roller table. The spraying mechanism includes a main pipe 5 and a number of branch pipes 6. The number of branch pipes 6 is equal to the number of rollers 2. The main pipe 5 is located on one side of the frame 1 of the conveying roller table. One end of it is connected to the liquid outlet of the delivery pump 8, and the other end is a closing mechanism. One end of a number of branch pipes 6 is connected to the main pipe 5, and the other end is a closed structure. A number of branch pipes 6 are respectively installed on one side of a number of rollers 2, and a plurality of nozzles 7 facing the rollers 2 are arranged at intervals. The nozzle openings are close to the roller surfaces to ensure that each roller can be adequately lubricated. The nozzles 7 can be located obliquely below the rollers 2 without affecting the transportation of the aluminum plate. If necessary, for the branch pipe 6 located between two rollers 2, two groups of nozzles 7 can be set, respectively facing the two adjacent rollers 2.

[0028] The lubricating liquid recovery mechanism includes a trench 11, a recovery pool 12, a submersible pump 13 and a control system. The trench 11 is located directly below the conveying roller table and is connected to the recovery pool 12. The recovery pool 12 can be located at the end or the middle position of the trench 11. The submersible pump 13 is arranged in the recovery pool 12, and its liquid outlet is connected to the oil inlet of the oil storage barrel 9 through a pipeline. The submersible pump 13 is responsible for recovering the lubricating liquid in the recovery pool 12 into the oil storage barrel 9. The submersible pump 13 selects a 1.5KW sewage submersible pump. This type of submersible pump has a large power and is not easily blocked, and can quickly recover the lubricating liquid into the oil storage barrel 9.

[0029] A filtering device 10 is installed at the oil inlet of the oil storage barrel 9 to filter the lubricating fluid input into the oil storage barrel 9. Correspondingly, a filter screen can also be arranged at the liquid inlet of the submersible pump 13 to improve the filtering effect. The filtering device 10 mainly filters the lubricating fluid recovered from the trench 11 by the submersible pump 13, and the filtered lubricating fluid is re-injected into the oil storage barrel 9, which can ensure the quality of the lubricating fluid in the oil storage barrel 9, realize the reuse of the lubricating fluid, and save costs. Installing the filtering device 10 at the oil inlet of the oil storage barrel 9 enables the transportation roller path lubrication system and the lubricating fluid recovery system to share one oil storage barrel 9, improving the efficiency of transportation roller path lubrication and lubricating fluid recovery.

[0030] A liquid level gauge 14 is arranged in the recovery tank 12, and both the liquid level gauge 14 and the submersible pump 13 are electrically connected to the control system. The liquid level gauge 14 is used to realize the automatic control of the start and stop of the submersible pump 13. The liquid level gauge 14 is vertically installed in the recovery tank 12 and mainly controls the start and stop signals when the submersible pump 13 is automatically controlled. In this embodiment, the model of the liquid level gauge 14 is YKJD24-350-600, which has the characteristics of compact structure, sensitive control, and simple installation. The liquid level gauge 14 has two liquid level control points, namely the lowest liquid level point and the highest liquid level point, which can be set according to the actual situation. When the liquid level height is lower than the set minimum value, the submersible pump 13 stops to avoid dry pumping and burning the pump. When the liquid level height is higher than the set maximum value, the submersible pump 13 is started to transport the lubricating fluid to the oil storage barrel 9 to avoid the overflow of the lubricating fluid in the recovery tank 12. Compared with the traditional manual control or single liquid level control, the dual liquid level control adopted by the present utility model can avoid the defects of dry pumping and burning the pump and frequent pump starting, and improve the work efficiency of the operator.

[0031] Among them, the middle of the trench 11 is low and both sides are high, and the slope of the two slopes on both sides is 10-20 degrees, preferably 15 degrees, which is convenient for the confluence of the lubricating fluid and the full recovery of the lubricating fluid. The recovery tank 12 is in a cube shape with a side length of 400-600 mm, preferably 500 mm, and the volume of the oil storage barrel 9 is larger than the volume of the recovery tank 12. A protective filter screen 15 is arranged above the recovery tank 12 to isolate impurities, floating objects, etc., to avoid entering the submersible pump 13 and causing blockage, and to improve the service life of the submersible pump 13.

[0032] As Figure 3 shown, the control system includes a circuit breaker, a contactor, a thermal protector, a relay, and a button assembly. A circuit breaker, a contactor, and a thermal protector are sequentially connected between the submersible pump 13 and the power supply, and the contactor is connected to the liquid level gauge 14 through a relay. The button assembly includes an emergency stop button, a control mode switching button, and a manual start-stop button. The control system can also be provided with an indicator light to display the actual working state of the system.

[0033] The control power supply of the circuit breaker controls the start and stop of the submersible pump 13 through the contactor. The overheat protector can protect the submersible pump 13 against overload. The relay is used to connect the electrical signal of the liquid level gauge 14 and the start / stop signal of the contactor, which is the key to realizing the automatic control of the submersible pump 13. The button assembly is used for emergency stop, switching the control mode, and manual control. The control system composed of the above components has the advantages of simplicity, convenient installation, and easy maintenance.

[0034] The control system has automatic control and manual control functions. After the system is started, switch the system to the automatic control state, and the submersible pump 13 is automatically controlled. The start and stop signals of the submersible pump 13 are mainly controlled by the normally closed and normally open points of the control relay. The electrical signal of the liquid level gauge 14 controls the energization and de-energization of the relay to realize the normally open and normally closed points of the control relay.

[0035] As Figure 3 shown, the start signal of the submersible pump 13 uses the normally open point of the control relay. When there is an electrical signal at the high liquid level of the liquid level gauge 14, the coil of the K2 control relay is energized, and the normally open point of K2 that controls the start of the submersible pump 13 closes, and the submersible pump 13 starts. When there is an electrical signal at the low liquid level of the liquid level gauge 14, the coil of the K1 control relay is energized, and the normally closed point of K1 that controls the start of the submersible pump 13 opens, and the submersible pump 13 stops. When the hot rolling mill starts production and the conveying roller table needs lubrication, the production worker only needs to switch the submersible pump 13 to the automatic control state in advance, and the lubricating liquid of the conveying roller table can be automatically recovered, and the production worker can do other work, improving the work efficiency of the production worker.

[0036] The working process of the present utility model is as follows: When the hot rolling mill is in production, the ingot needs to be transported to the roll gap of the rolling mill through the conveying roller table for rolling back and forth. The operator starts the delivery pump 8, and the delivery pump 8 transports the lubricating liquid in the oil storage barrel 9 to the spraying mechanism and sprays it onto the surface of the conveying roller table through the nozzle 7 of the spraying mechanism to lubricate the roller surface. The lubricating liquid flowing down from the lubricated roller surface enters the trench 11 and converges into the recovery pool 12. When the operator starts the delivery pump 8, the submersible pump 13 is switched to the automatic control state at the same time. The liquid level gauge 14 in the recovery pool 12 sends the start and stop electrical signals of the submersible pump 13 to the control system according to the actual liquid level in the recovery pool 12, realizing the automatic recovery control of the lubricating liquid. The present utility model can automatically recover and reuse the lubricating liquid for the hot rolling roller table, avoiding the inconvenience caused by manual operation.

[0037] The above description is a detailed description of the preferred and feasible embodiments of the present utility model, but the embodiments are not used to limit the scope of the patent application of the present utility model. Any equivalent changes or modifications completed under the technical spirit disclosed by the present utility model shall fall within the scope of the patent covered by the present utility model.

Claims

1. A novel hot rolling roller lubrication and cooling device, comprising a conveying roller, a spraying mechanism and an oil storage barrel, wherein the spraying mechanism is arranged on the conveying roller, the oil storage barrel is located on one side of the conveying roller, and has an oil outlet and an oil inlet, wherein the oil outlet is connected to a delivery pump, and the liquid outlet of the delivery pump is connected to the spraying mechanism, and is characterized in that: Also included is a lubricating fluid recovery mechanism; The lubricating liquid recovery mechanism includes a ditch, a recovery tank, a submersible pump and a control system; the ditch is located directly below the transport roller and is connected to the recovery tank, the submersible pump is arranged in the recovery tank, and its liquid outlet is connected to the oil inlet of the oil storage barrel through a pipeline, and a liquid level meter is arranged in the recovery tank, and the liquid level meter and the submersible pump are both electrically connected to the control system.

2. A novel hot rolling roller lubrication and cooling device according to claim 1, characterized in that: The transport roller table includes a frame, a plurality of rollers rotatably mounted on the frame, and at least three drive motors fixedly mounted on the frame; the plurality of rollers are divided into at least three groups, each group of rollers is transmission-connected to a drive motor, and each group of rollers contains 7-10 rollers; the drive motor is connected to a frequency converter, and each frequency converter can be connected to up to three drive motors.

3. A novel hot rolling roller lubrication and cooling device according to claim 2, characterized in that: The spray mechanism includes a main pipe and a plurality of branch pipes; the main pipe is located on one side of the transport roller frame, one end of which is connected to the liquid outlet of the delivery pump, and the other end is a closing mechanism; one end of a plurality of branch pipes is connected to the main pipe, and the other end is a closing structure; the plurality of branch pipes are respectively installed on one side of a plurality of rollers, and a plurality of nozzles facing the rollers are arranged at intervals.

4. A novel hot rolling roller lubrication and cooling device according to claim 1, characterized in that: The oil inlet of the oil storage barrel is equipped with a filtering device.

5. A novel hot rolling roller lubrication and cooling device according to claim 1, characterized in that: The ditch is low in the middle and high on both sides, and the slopes on both sides are 10-20 degrees.

6. A novel hot rolling roller lubrication and cooling device according to claim 1, characterized in that: The recovery pool is in a cube shape with a side length of 400-600 mm, and the volume of the oil storage barrel is greater than the volume of the recovery pool.

7. A novel hot rolling roller lubrication and cooling device according to claim 1, characterized in that: A protective filter is arranged above the recovery pool.

8. A novel hot rolling roller lubrication and cooling device according to claim 1, characterized in that: The control system includes a circuit breaker, a contactor, an overheat protector, a relay and a button assembly; the circuit breaker, the contactor and the overheat protector are connected in sequence between the submersible pump and the power supply, and the contactor is connected to the liquid level meter through a relay; the button assembly includes an emergency stop button, a control mode switching button and a manual start-stop button.

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