Automatic soil adding device for plate filter of cold rolling mill

Abstract

The utility model relates to an automatic soil adding device for a plate filter of a cold rolling mill, which comprises a rack, a diatomite bin, a cellulose bin and a carclazyte bin are respectively arranged on the rack through weighing sensors, and a first stirring box and a second stirring box are arranged on one side of the rack. The lower end of the diatomite bin, the lower end of the cellulose bin and the lower end of the carclazyte bin are each provided with two material pumping pipelines correspondingly leading to the first stirring box and the second stirring box, the material pumping pipelines are each provided with a two-stage material pumping negative pressure pump, and the first stirring box and the second stirring box are each provided with an oil inlet pipe and an oil outlet pipe. The device is beneficial for replacing manual operation, the labor cost is reduced, and the soil adding efficiency is improved.

Description

Technical Field

[0001] The utility model relates to an automatic diatomaceous earth adding device for a plate filter of a cold rolling mill. Background Art

[0002] During the working process of a cold rolling mill, rolling oil will inevitably be mixed with various impurities, such as metal particles, oxides, dust, etc. The plate filtration system of rolling oil can effectively filter out these impurities, maintain the cleanliness of the rolling oil, extend the service life of the rolling oil, reduce the wear of the impurities on the rolls and the rolled pieces. At the same time, clean rolling oil can provide better lubrication and cooling effects, which helps to reduce defects and defective products during the rolling process, thereby improving product quality. The main purpose of adding diatomaceous earth to the plate filtration system of rolling oil is to improve the filtration accuracy and optimize the filtration performance, so as to ensure the quality and cleanliness of the rolling oil. However, the method of adding diatomaceous earth in the plate filtration system of rolling oil is manual addition. The operator observes the liquid level of the rolling oil in the mixing tank according to the diatomaceous earth adding process, manually opens or closes the oil inlet valve, and then manually adds diatomaceous earth, cellulose, and clay formula to the mixing tank according to each process. However, the rolling oil filtration process requires frequent addition of diatomaceous earth, and there are errors in the weight of manual addition. Content of the Utility Model

[0003] The purpose of the utility model is to provide an automatic diatomaceous earth adding device for a plate filter of a cold rolling mill, which helps to replace manual operation, reduce labor costs, and improve the diatomaceous earth adding efficiency.

[0004] The technical solution of the utility model lies in: an automatic diatomaceous earth adding device for a plate filter of a cold rolling mill, including a frame. On the frame, there are respectively arranged a diatomaceous earth bin, a cellulose bin, and a clay bin through load cells. On one side of the frame, there are arranged a first mixing tank and a second mixing tank. At the lower ends of the diatomaceous earth bin, the cellulose bin, and the clay bin, there are two corresponding material extraction pipes leading to the first mixing tank and the second mixing tank respectively. On the material extraction pipes, there are arranged two-stage material extraction negative pressure pumps. On the first mixing tank and the second mixing tank, there are arranged an oil inlet pipe and an oil outlet pipe.

[0005] Further, the diatomaceous earth bin, the cellulose bin, and the clay bin are all connected to the frame through a pair of load cells, and vibrators are arranged on the diatomaceous earth bin, the cellulose bin, and the clay bin.

[0006] Further, buffer bins are arranged at the lower parts of the diatomaceous earth bin, the cellulose bin, and the clay bin, and a screw conveyor mechanism driven by a screw conveyor motor is arranged in the buffer bin of the cellulose bin.

[0007] Furthermore, at the lower ends of the buffer bins of the diatomite bin, cellulose bin, and clay bin, first and second material extraction pipes leading to the first mixing tank and the second mixing tank are respectively installed. At one end of the first and second material extraction pipes connected to the buffer bin, a primary material extraction negative pressure pump is provided, and a secondary material extraction negative pressure pump is provided in the middle of the first and second material extraction pipes.

[0008] Furthermore, an observation window is provided on the buffer bin.

[0009] Furthermore, stirring shafts driven by stirring motors are provided in both the first mixing tank and the second mixing tank. Liquid level tubes are provided on the side walls of the first mixing tank and the second mixing tank, and liquid level sensors as well as low, medium, and high liquid level induction positions are installed.

[0010] Furthermore, oil inlet electric valves are installed on the oil inlet pipes of the first mixing tank and the second mixing tank.

[0011] Compared with the prior art, the present utility model has the following advantages:

[0012] This device helps to replace manual operation, achieve automation, and helps to achieve precise proportioning of diatomite, cellulose, and clay, reduce manual operation, lower labor costs, and improve the efficiency of adding soil. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic structural diagram of the device of the present utility model;

[0014] Figure 2 is a schematic diagram of the control system of the present utility model;

[0015] In the figure: 1 - frame, 2 - load cell, 10 - diatomaceous earth silo, 11 - vibrator, 12 - buffer silo, 13 - first diatomaceous earth pumping pipeline, 14 - second diatomaceous earth pumping pipeline, 15 - primary pumping negative pressure pump, 16 - first and second stage pumping negative pressure pump, 17 - second second stage pumping negative pressure pump, 18 - observation window, 20 - cellulose silo, 21 - vibrator, 22 - buffer silo, 23 - first cellulose pumping pipeline, 24 - second cellulose pumping pipeline, 25 - primary pumping negative pressure pump, 26 - first and second stage pumping negative pressure pump, 27 - second second stage pumping negative pressure pump, 28 - observation window, 29 - auger motor, 30 - clay silo, 31 - vibrator, 32 - buffer silo, 33 - first clay pumping pipeline, 34 - second clay pumping pipeline, 35 - primary pumping negative pressure pump, 36 - first and second stage pumping negative pressure pump, 37 - second second stage pumping negative pressure pump, 38 - observation window, 40 - first mixing tank, 41 - oil inlet pipe, 42 - oil outlet pipe, 43 - oil inlet electric valve, 44 - mixing motor, 45 - mixing shaft, 50 - second mixing tank, 51 - oil inlet pipe, 52 - oil inlet pipe, 53 - oil inlet electric valve, 54 - mixing motor, 55 - mixing shaft, 60 - liquid level sensor, 61 - low liquid level, 62 - medium liquid level, 63 - high liquid level;

[0016] 101 - touch screen, 102 - PLC, 103 - diatomaceous earth silo weighing instrument, 104 - diatomaceous earth silo load cell 1, 105 - diatomaceous earth silo load cell 2, 106 - primary and second stage pumping negative pressure pumps for diatomaceous earth in the first mixing tank, 107 - primary and second stage pumping negative pressure pumps for diatomaceous earth in the second mixing tank, 108 - cellulose silo weighing instrument, 109 - cellulose silo load cell 1, 110 - cellulose silo load cell 2, 111 - primary and second stage pumping negative pressure pumps for cellulose in the first mixing tank, 112 - primary and second stage pumping negative pressure pumps for cellulose in the second mixing tank, 113 - auger motor 1, 114 - auger motor 2, 115 - clay silo weighing instrument, 116 - clay silo load cell 1, 117 - clay silo load cell 2, 118 - primary and second stage pumping negative pressure pumps for clay in the first mixing tank, 119 - primary and second stage pumping negative pressure pumps for clay in the second mixing tank, 120 - liquid level sensor in the first mixing tank, 121 - oil inlet electric valve in the first mixing tank, 123 - liquid level sensor in the second mixing tank, 124 - oil inlet electric valve in the second mixing tank. Detailed implementation mode

[0017] To make the above features and advantages of the present utility model more understandable, specific embodiments are given below in conjunction with the accompanying drawings and described in detail as follows, but the present utility model is not limited thereto.

[0018] Reference Figures 1 to 2

[0019] An automatic soil adding device for a plate filter of a cold rolling mill, comprising a frame 1. On the frame, a diatomaceous earth silo 10, a cellulose silo 20, and a clay silo 30 are respectively arranged via load cells. On one side of the frame, a first mixing tank 40 and a second mixing tank 50 are arranged. At the lower ends of the diatomaceous earth silo, the cellulose silo, and the clay silo, two corresponding material extraction pipes leading to the first mixing tank and the second mixing tank are provided. On the material extraction pipes, two-stage material extraction negative pressure pumps are provided to add diatomaceous earth, cellulose, and clay into the first mixing tank and the second mixing tank. Corresponding oil inlet pipes 41, 51 and oil outlet pipes 42, 52 are provided on the first mixing tank and the second mixing tank. On the oil inlet pipes 41, 51, oil inlet electric valves 43, 53 are correspondingly installed. The device is also configured with a control system to control the oil adding and soil adding of the mixing tanks according to the soil adding process, the diatomaceous earth, cellulose, clay formulas of each process, and the liquid levels of the mixing tanks.

[0020] In this embodiment, the diatomaceous earth silo, the cellulose silo, and the clay silo are all connected to the frame via a pair of load cells 2 to measure and calculate the weight of the silos in real time. Vibrators 11, 21, 31 are correspondingly provided on the diatomaceous earth silo, the cellulose silo, and the clay silo to facilitate material discharging.

[0021] In this embodiment, buffer bins 12, 22, 32 are correspondingly provided at the lower parts of the diatomaceous earth silo, the cellulose silo, and the clay silo to facilitate material discharging. Since cellulose has high viscosity, two groups of auger mechanisms respectively driven by auger motors 29 are arranged in the buffer bin of the cellulose silo. The auger mechanisms are auger shafts vertically arranged in the buffer bin to enable the cellulose to be discharged smoothly.

[0022] In this embodiment, a first diatomaceous earth material extraction pipe 13 and a second diatomaceous earth material extraction pipe 14 corresponding to the first mixing tank and the second mixing tank are installed at the lower end of the buffer bin of the diatomaceous earth silo; a first cellulose material extraction pipe 23 and a second cellulose material extraction pipe 24 corresponding to the first mixing tank and the second mixing tank are installed at the lower end of the buffer bin of the cellulose silo, and a first clay material extraction pipe 33 and a second clay material extraction pipe 34 corresponding to the first mixing tank and the second mixing tank are installed at the lower end of the buffer bin of the clay silo.

[0023] In this embodiment, at one end of the first diatomite pumping pipeline, the second diatomite pumping pipeline, the first cellulose pumping pipeline, the second cellulose pumping pipeline, the first clay pumping pipeline, and the second clay pumping pipeline connected to their respective buffer bins, there are first-stage pumping negative pressure pumps 15, 25, and 35 respectively. At one end of the first diatomite pumping pipeline, the first cellulose pumping pipeline, and the first clay pumping pipeline close to the first mixing tank, there are first second-stage pumping negative pressure pumps 16, 26, and 36 respectively. At one end of the second diatomite pumping pipeline, the second cellulose pumping pipeline, and the second clay pumping pipeline close to the second mixing tank, there are second second-stage pumping negative pressure pumps 17, 27, and 37 respectively.

[0024] In this embodiment, the buffer bins are all provided with observation windows 18, 28, and 38.

[0025] In this embodiment, the first mixing tank is provided with a stirring shaft 45 driven by a stirring motor 44, and the second mixing tank is provided with a stirring shaft 55 driven by a stirring motor 54. The side walls of the first mixing tank and the second mixing tank are both provided with liquid level tubes and are installed with liquid level sensors 60. The liquid level sensors are provided with low liquid level 61, medium liquid level 62, and high liquid level 63 induction positions.

[0026] In this embodiment, the device is configured with a touch screen. The touch screen controls the electrical components on the diatomite bin 10, cellulose bin 20, clay bin 30, first mixing tank 40, and second mixing tank 50 to work through the PLC control system. The device can include three modes: jogging, manual, and automatic.

[0027] The jogging mode is to control the pumping negative pressure pump to add materials to the mixing tank by jogging the diatomite or cellulose or clay adding material button; in the manual mode, the adding material weight of diatomite or cellulose or clay can be set, then jog the diatomite or cellulose or clay adding material button, and then control the pumping negative pressure pump to add materials to the mixing tank until the target weight; in the automatic mode, the system automatically controls the mixing tank to automatically add oil and materials according to the material adding process and the diatomite, cellulose, clay formulas and the liquid level of the mixing tank in each process.

[0028] Calculation of the material adding weight:

[0029] Each time the diatomite adding is started, the diatomite adding weight G 硅藻土 is cleared, and the initial value G 硅藻土初始值 of the diatomite bin weight is recorded. After the diatomite adding is completed, the diatomite bin weight is G 硅藻土加土后 , then the diatomite adding weight G 硅藻土 = G 硅藻土初始值 - G 硅藻土加土后 .

[0030] Each time when adding cellulose, the weight of cellulose plus soil is G 纤维素 Clear it, and record the initial value G of the weight of the cellulose bin 纤维素初始值 , after the addition of cellulose and soil is completed, the weight of the cellulose bin is G 纤维素加土后 , then the weight of cellulose plus soil G 纤维素 =G 纤维素初始值 -G 纤维素加土后 .

[0031] Each time when adding clay, the weight of clay plus soil is G 白土 Clear it, and record the initial value G of the weight of the clay bin 白土初始值 , after the addition of clay and soil is completed, the weight of the clay bin is G 白土加土后 , then the weight of clay plus soil G 白土 =G 白土初始值 -G 白土加土后 .

[0032] The usage method of this device is as follows:

[0033] (1) First soil addition: Open the oil inlet electric valves of the first and second mixing tanks to start adding rolling oil; when the low liquid level of the first and second mixing tanks is sensed, start adding diatomaceous earth G 1 kg, cellulose X 1 kg, clay B 1 kg; when G 硅藻土 =G 1 , G 纤维素 =X 1 , G 白土 =B 1 and the liquid level of the first and second mixing tanks is sensed, close the oil inlet electric valves of the first and second mixing tanks, and pump the rolling oil in the first and second mixing tanks to the plate filtration system;

[0034] (2) Second soil addition: Pump the rolling oil in the first and second mixing tanks to the plate filtration system. When the low liquid level of the first and second mixing tanks is sensed, open the oil inlet electric valves of the first and second mixing tanks, and the first and second mixing tanks start to add rolling oil; when the middle liquid level of the first and second mixing tanks is sensed, start adding diatomaceous earth G 2 kg, cellulose X 2 kg, clay B 2 kg; when G 硅藻土 =G 2 , G 纤维素 =X 2 , G 白土 =B 2 and the high liquid level of the first and second mixing tanks is sensed, close the oil inlet electric valves of the first and second mixing tanks, and pump the rolling oil in the first and second mixing tanks to the plate filtration system;

[0035] (3) Third addition of soil: The rolling oil in the first and second mixing tanks is pumped to the plate filtration system. When the low liquid level of the first and second mixing tanks is sensed, the oil inlet electric valves of the first and second mixing tanks are opened, and the first and second mixing tanks start to be filled with rolling oil; when the medium liquid level of the first and second mixing tanks is sensed, diatomaceous earth G 3 kg, cellulose X 3 kg, clay B 3 kg; when G 硅藻土 = G 3 , G 纤维素 = X 3 , G 白土 = B 3 and the high liquid level of the first and second mixing tanks are sensed, the oil inlet electric valves of the first and second mixing tanks are closed, and the rolling oil in the first and second mixing tanks is pumped to the plate filtration system;

[0036] (4) Starting from the third time, the subsequent automatic soil addition operation steps remain unchanged. The number of soil addition times is set according to the actual usage requirements, and soil addition is carried out according to the designed soil addition formula; when all the soil addition times are completed, the rolling oil in the first and second mixing tanks is pumped to the plate filtration system. When the low liquid level of the first and second mixing tanks is sensed, an alarm is given to prompt the operator to request the plate filtration system to be purged in preparation for the next automatic soil addition.

[0037] In this embodiment, since there is still some soil in the pumping pipeline after each pumping stop, in order to ensure smooth pumping, each time pumping is carried out, first start the secondary pumping negative pressure pump in the two-stage pumping negative pressure pump to add the soil remaining in the pumping pipeline to the mixing tank. After a 10-second delay, then start the primary pumping negative pressure pump in the two-stage pumping negative pressure pump. The primary pumping negative pressure pump and the secondary pumping negative pressure pump work simultaneously to add the soil in the silo to the first and second mixing tanks.

[0038] If the terms "first", "second", etc. are used in the present invention to limit components, those skilled in the art should be aware that: the use of "first" and "second" is only for the convenience of differentiating components in the description. Unless otherwise stated, the above terms have no special meaning.

[0039] If the present invention discloses or involves components or structural members that are fixedly connected to each other, then, unless otherwise stated, the fixed connection can be understood as: a detachable fixed connection (for example, connected by bolts or screws), or it can also be understood as: a non-detachable fixed connection (for example, riveting, welding). Of course, the mutual fixed connection can also be replaced by an integral structure (for example, manufactured by integral casting process) (except when it is obviously impossible to adopt the integral forming process).

[0040] In addition, unless otherwise stated, the terms used to represent positional relationships or shapes in any of the above-disclosed technical solutions of the present utility model include states or shapes that are approximate, similar, or close thereto.

[0041] Any component provided by the present utility model can either be assembled from a plurality of individual components or be a single component manufactured by an integral forming process.

[0042] The above are only the preferred embodiments of the present utility model, and all equivalent changes and modifications made according to the scope of the patent application of the present utility model shall fall within the scope covered by the present utility model.

Claims

1. An automatic soil adding device for a cold rolling mill plate filter, comprising a frame, characterized in that: The frame is provided with a diatomaceous earth silo, a cellulose silo and a kaolin silo respectively through weighing sensors, a first mixing box and a second mixing box are provided on one side of the frame, and two extraction pipes corresponding to the first mixing box and the second mixing box are provided at the lower ends of the diatomaceous earth silo, the cellulose silo and the kaolin silo, and two-stage extraction negative pressure pumps are provided on the extraction pipes, and an oil inlet pipe and an oil outlet pipe are provided on the first mixing box and the second mixing box.

2. The automatic soil adding device for cold rolling mill plate filter according to claim 1 is characterized in that: The diatomite silo, cellulose silo and clay silo are all connected to the frame via a pair of weighing sensors, and the diatomite silo, cellulose silo and clay silo are all provided with vibrators.

3. The automatic soil adding device for cold rolling mill plate filter according to claim 1 or 2, characterized in that: The lower parts of the diatomite silo, the cellulose silo and the clay silo are all provided with a buffer silo, and the buffer silo of the cellulose silo is provided with an auger mechanism driven by an auger motor.

4. The automatic soil adding device for cold rolling mill plate filter according to claim 3 is characterized in that: The lower ends of the buffer bins of the diatomite silo, cellulose silo and clay silo are equipped with first and second diatomite extraction pipelines leading to the first mixing box and the second mixing box respectively. The first and second diatomite extraction pipelines are connected to the buffer bins at one end and are provided with a primary extraction negative pressure pump. The middle parts of the first and second diatomite extraction pipelines are provided with a secondary extraction negative pressure pump.

5. The automatic soil adding device for cold rolling mill plate filter according to claim 3 is characterized in that: The buffer bin is provided with an observation window.

6. The automatic soil adding device for cold rolling mill plate filter according to claim 1, 2 or 4, characterized in that: The first stirring box and the second stirring box are both provided with stirring shafts driven by stirring motors, and the side walls of the first stirring box and the second stirring box are provided with liquid level tubes and installed with liquid level sensors.

7. The automatic soil adding device for cold rolling mill plate filter according to claim 1, characterized in that: The oil inlet pipes of the first mixing box and the second mixing box are both equipped with oil inlet electric valves.

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