Automatic oil skimming device for emulsion

Abstract

The utility model relates to the technical field of aluminum processing hot rolling process, in particular to an automatic emulsion oil skimming device which comprises a box body, a partition plate arranged in the box body divides the box body into a standing cavity and a dirty oil cavity, the partition plate is lower than the top end of the box body, an oil skimming opening is formed by the distance between the partition plate and the top surface of the box body, and the automatic emulsion oil skimming device further comprises an air knife arranged above the standing cavity. The air outlet width of the air knife is not smaller than the length of the oil skimming opening, and the air knife is parallel to the partition plate. An air inlet pipeline of the air knife is connected with an electric control valve, the electric control valve is connected with a controller, and opening and closing of the electric control valve are controlled through the controller, so that opening and closing of the air inlet pipeline of the air knife are controlled. The oil skimming tank is used for solving the problem of low oil skimming operation efficiency of the oil skimming tank in the prior art.

Description

Technical Field

[0001] The utility model relates to the technical field of aluminum processing hot rolling technology, and particularly relates to an automatic emulsion skimming device. Background Art

[0002] With the improvement of material life, people's pursuit of a better life is becoming stronger and stronger; employees also pay attention to their own physical health and begin to focus on the working environment; enterprises also have the responsibility and obligation to continuously improve the working environment of employees to ensure their physical and mental health.

[0003] As a lubricating and cooling medium during hot rolling, the emulsion is usually recycled; when the used emulsion flows back to the dirty oil tank, a large amount of powder generated by the friction of aluminum strip rolling and mechanical lubricating oil seeping out of the bearing box will be brought in. These powders and mechanical lubricating oils are mixed in the emulsion, which will affect the surface quality of the aluminum strip on the one hand, and on the other hand, if too much lubricating oil is mixed in, it will increase the lubricating performance of the emulsion, making it difficult to bite in during rolling and affecting the rolling efficiency.

[0004] According to the requirements of the rolling process, it is necessary to stand still regularly to facilitate skimming the dirty oil on the surface of the emulsion (after standing still, the lubricating oil contained in the emulsion will float, so as to facilitate skimming the lubricating oil on the top, that is, the dirty oil). However, during the skimming process, the skimming environment temperature is relatively high, and volatile gases are generated in the mixed liquid, and the skimming environment is harsh.

[0005] In the prior art, there is a new type of emulsion workshop online automatic skimming device with a patent publication number of CN216827943U. This automatic skimming device can make the dirty oil floating on the surface of the emulsion enter the skimming tank in an overflow manner. However, this overflow method requires raising the liquid level to ensure that the dirty oil flows into the skimming tank, and the operation efficiency is relatively low; and during the process of raising the liquid level, new mixed liquid needs to enter the tank to raise the liquid level. The new mixed liquid may enter the conduit connecting the emulsion tank before the static separation is completed while raising the liquid level, resulting in more lubricating oil still contained in the emulsion collected in the emulsion tank. Content of the Utility Model

[0006] The utility model aims to provide an automatic emulsion skimming device to solve the problem of low skimming operation efficiency of the skimming tank in the prior art.

[0007] To achieve the above purpose, the utility model adopts the following technical scheme:

[0008] An automatic emulsion skimming device includes a box body. A partition is arranged in the box body, and the partition divides the box body into a static chamber and a dirty oil chamber. The partition is lower than the top end of the box body, and the distance between the partition and the top surface of the box body forms a skimming port. It also includes an air knife arranged above the static chamber. The air outlet width of the air knife is not less than the length of the skimming port, and the air knife is parallel to the partition.

[0009] The principle and advantages of this solution are as follows: The emulsion that needs to separate dirty oil is placed in the static chamber for static settlement. When the static settlement is completed and the emulsion and dirty oil are separated, the dirty oil floats above the emulsion due to its lower density. At this time, the air knife is started, and the air blown out from the air knife forces the top dirty oil to overflow the partition and enter the dirty oil chamber, realizing the separation of dirty oil in the emulsion. Compared with the existing technology that needs to lift the liquid level, this solution directly starts an air knife with an outlet width not less than the width of the skimming port. Since the air outlet of the air knife faces the dirty oil chamber, under the continuous blowing force of the air knife, the dirty oil moves close to the partition, so that without lifting the overall liquid level of the static chamber, the liquid level of the dirty oil close to the partition is raised to the point where the dirty oil overflows the partition and enters the dirty oil chamber, achieving the purpose of quickly skimming oil.

[0010] In addition, this solution adopts the method of purging and skimming oil, which can enhance the separation effect of dirty oil and emulsion with wind force, thus not only facilitating the acceleration of the separation speed of dirty oil, but also facilitating the more thorough treatment of the dirty oil floating on the surface of the emulsion.

[0011] Preferably, as an improvement, an electric control valve is connected to the air inlet pipeline of the air knife. The electric control valve is connected to the controller, and the opening and closing of the electric control valve are controlled by the controller, thereby controlling the opening and closing of the air inlet pipeline of the air knife.

[0012] Beneficial effects: When adopting this solution, through the setting of the controller and the electric control valve, remote control of skimming oil can be realized, without the need for operators to be near the box body to control the air knife for operation, ensuring that the health of skimming oil operators is not affected at all by whether the skimming oil environment is harsh or not.

[0013] Preferably, as an improvement, the electric control valve includes a switch valve with a solenoid valve, and the solenoid valve is connected to the controller.

[0014] Beneficial effects: When adopting this solution, the opening and closing of the air inlet pipeline are controlled by controlling the opening and closing of the switch valve through the solenoid valve, with a simple structure and easy implementation.

[0015] Preferably, as an improvement, an image acquisition unit is further included, and the image acquisition unit is used to acquire the state of the box body.

[0016] Beneficial effects: During the skimming oil operation, the staff can check the skimming oil effect according to the state of the box body (including the liquid level height in the box body) acquired by the image acquisition unit.

[0017] Preferably, as an improvement, the included angle between the air knife and the liquid surface in the static box is 10 - 20°.

[0018] Beneficial effects: Through the angle setting of this solution, the air knife has a good skimming oil effect.

[0019] Preferably, as an improvement, the height distance between the air knife and the liquid level in the static box is 150 - 300 mm.

[0020] Preferably, as an improvement, the horizontal distance between the air knife and the oil skimming port is 250 - 400 mm.

[0021] Beneficial effects: Through the settings of the liquid level height distance and the horizontal distance in this solution, even if the air knife is fixedly installed in a limited space, a good oil skimming effect can be achieved.

[0022] Preferably, as an improvement, the air knife is installed on a linear mover, and the linear mover drives the air knife to move away from or close to the partition board.

[0023] Beneficial effects: When adopting this solution, the amount of dirty oil skimmed each time can be increased by the moving air knife.

[0024] Preferably, as an improvement, an outlet for liquid to flow out is opened at the lower part or bottom of the static chamber, so as to facilitate the timely discharge of the emulsion with separated dirty oil from the outlet after oil skimming is completed, in order to facilitate the preparation for the next oil skimming.

[0025] Preferably, as an improvement, an electric valve is installed on the outlet to facilitate the automatic control of the outlet. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a three-dimensional structure schematic diagram of Embodiment 1 of the present utility model.

[0027] Figure 2 It is Figure 1 the front view cross-sectional schematic diagram of

[0028] Figure 3 It is Figure 2 the front view cross-sectional schematic diagram showing the inlet pipe, the outlet and the dirty oil chamber outlet of the static chamber in DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] The following is further detailed through specific embodiments:

[0030] The reference numerals in the attached drawings of the specification include: box body 1, partition board 2, oil skimming port 10, static chamber 3, dirty oil chamber 4, air knife 5, electric control valve 6, solenoid valve 61, switch valve 62, controller 7, outlet 8, inlet pipe 9.

[0031] Embodiment 1

[0032] Combined with Figures 1 to 3, An automatic emulsion skimming device, including a box body 1, a partition 2 is fixed in the box body 1. The partition 2 divides the box body 1 into a non-communicating static chamber 3 and a waste oil chamber 4. The partition 2 is lower than the top end of the box body 1. The distance between the partition 2 and the top surface of the box body 1 forms a skimming port 10. Above the static chamber 3, a purging air knife 5 is installed. The air inlet pipeline of the air knife 5 is connected to compressed air. The outlet width of the air knife 5 is not less than the length of the skimming port 10. The air knife 5 is parallel to the partition 2. In this embodiment, the outlet width of the air knife 5 is equal to the width of the skimming port 10 formed by the partition 2 and the box body 1.

[0033] The outlet of the air knife 5 faces the waste oil chamber 4. The angle between the air knife 5 and the liquid level in the static box is 10 - 20°. The height distance between the air knife 5 and the liquid level in the static box is 150 - 300 mm. In this embodiment, the air knife 5 is fixedly installed above the box body 1. The horizontal distance between the air knife 5 and the skimming port 10 is 250 - 400 mm.

[0034] An electric control valve 6 is connected to the air inlet pipeline of the air knife 5. The electric control valve 6 is connected to a controller 7. The opening and closing of the electric control valve 6 are controlled by the controller 7, so as to control the opening and closing of the air inlet pipeline of the air knife 5. The controller 7 in this embodiment is a PLC controller 7.

[0035] Specifically, the electric control valve 6 is a switch valve 62 with a solenoid valve 61. The solenoid valve 61 is connected to the controller 7. The opening or closing of the switch valve 62 is controlled by controlling the action of the solenoid valve 61. After the switch valve 62 is opened, compressed air enters the air knife 5 and blows out from the outlet.

[0036] It also includes an image acquisition unit, which is used to acquire the state of the box body 1. In this embodiment, the image acquisition unit is a high-definition camera. By monitoring the state of the box body 1 through the high-definition camera, when skimming, the staff can control the opening duration and closing duration of the solenoid valve 61 according to the state of the box body 1 displayed by the camera, so as to ensure the skimming effect.

[0037] The usage method of this embodiment is as follows:

[0038] During actual use, the automatic oil skimming device is placed in the basement, the operation end of the controller 7 is arranged in the operation room, the image acquisition unit is connected with a display screen which is arranged in the operation room. According to the liquid level height of the box body 1 and the floating condition of the dirty oil shown on the display screen, when the liquid level reaches the oil skimming height and the mixed liquid is static for 10 - 20 minutes, the solenoid valve 61 is controlled by the controller 7 to open, and compressed air continuously blows out from the air knife 5. Since the air outlet of the air knife 5 faces the dirty oil chamber 4, the dirty oil moves close to the partition 2 under the continuous blowing force of the air knife 5, so as to raise the liquid level of the dirty oil close to the partition 2 to the level where the dirty oil overflows the oil skimming port 10 formed by the partition 2 and the box body 1 and enters the dirty oil chamber 4 without raising the overall liquid level of the static chamber 3, thus achieving the purpose of quickly skimming oil.

[0039] The skimmed dirty oil enters the dirty oil chamber 4 for collection. Both the lower part or the bottom of the dirty oil chamber 4 and the static chamber 3 are provided with outlets 8 (in this embodiment, they are arranged at the bottom). Electric valves are installed on the outlets 8, and the electric valves are all connected with the controller 7. After the electric valves are opened, the liquid in the corresponding chamber can be discharged. For example, the dirty oil in the dirty oil chamber 4 can be discharged after the dirty oil chamber 4 is full, which is convenient for the subsequent dirty oil to enter the dirty oil chamber 4 after skimming. In the static chamber 3, the emulsion after skimming the dirty oil can flow out after the electric valve connected to the outlet 8 of the static chamber 3 is opened. When it is necessary to separate the dirty oil in the emulsion again, the liquid to be separated and mixed enters through the oil inlet pipe 9 provided at the bottom of the static chamber 3.

[0040] The emulsion after skimming flows out from the static chamber 3 and then flows into a plate filter to filter out the aluminum powder and a small amount of lubricating oil contained in the emulsion. The filtered emulsion can be reused.

[0041] The oil skimming device of this embodiment enables the operator to control the oil skimming operation in the operation room far away from the oil skimming site, thus ensuring that the health status of the workers is not affected during oil skimming. When skimming oil, the method of using the air knife 5 to blow and skim oil has higher efficiency than the overflow oil skimming method.

[0042] In addition, this embodiment adopts the method of purging and skimming oil, which can enhance the separation effect of the dirty oil and the emulsion with wind force, thus not only being beneficial to accelerating the separation speed of the dirty oil, but also being beneficial to treating the dirty oil floating on the surface of the emulsion more thoroughly.

[0043] In addition, in this embodiment, after the oil skimming is completed, the emulsion is discharged from the bottom outlet 8 of the static chamber 3, which can ensure that the emulsion contains as little dirty oil as possible, thus improving the purity of the separated emulsion compared with others, that is, improving the separation effect.

[0044] Embodiment Two

[0045] The difference between the second embodiment and the first embodiment is that the air knife 5 in this embodiment is installed on a linear mover, and the linear mover drives the air knife 5 to move away from or close to the partition plate 2. The linear starter can be a linear module with a ball screw structure. The air knife 5 is fixedly installed on the output slider of the linear module. After the linear module is started, the linear movement of the slider drives the air knife 5 to move away from or close to the partition plate 2, thereby increasing the amount of dirty oil skimmed each time.

[0046] The above are only the embodiments of the present invention. Specific technical solutions and / or common knowledge such as characteristics known in the art are not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the present invention, several deformations and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the implementation effect of the present invention and the practicality of the patent. The protection scope required by this application should be based on the content of its claims, and the specific implementation manners described in the specification can be used to interpret the content of the claims.

Claims

1. An automatic emulsion skimming device, comprising a box, a partition is provided in the box, the partition divides the box into a static chamber and a dirty oil chamber, characterized in that: The partition is lower than the top of the box body, and the distance between the partition and the top surface of the box body forms an oil skimming port. It also includes a wind knife arranged above the static chamber, the air outlet width of the wind knife is not less than the length of the oil skimming port, the wind knife is parallel to the partition, and the air outlet of the wind knife faces the dirty oil chamber.

2. An automatic emulsion oil skimming device according to claim 1, characterized in that: The air inlet pipeline of the air knife is connected with an electric control valve, which is connected to a controller. The opening and closing of the electric control valve is controlled by the controller, thereby controlling the opening and closing of the air inlet pipeline of the air knife.

3. An automatic emulsion oil skimming device according to claim 2, characterized in that: The electrically controlled valve comprises a switch valve with a solenoid valve, and the solenoid valve is connected to a controller.

4. An automatic emulsion oil skimming device according to claim 2, characterized in that: It also includes an image acquisition unit, which is used to acquire the state of the box.

5. An automatic emulsion oil skimming device according to any one of claims 1 to 4, characterized in that: The angle between the wind knife and the liquid surface in the static box is 10-20°.

6. An automatic emulsion oil skimming device according to claim 5, characterized in that: The height distance between the wind knife and the liquid surface in the static box is 150-300mm.

7. An automatic emulsion oil skimming device according to claim 6, characterized in that: The horizontal distance between the wind knife and the oil skimmer port is 250-400 mm.

8. The automatic emulsion oil skimming device according to claim 5, characterized in that: The wind knife is installed on a linear mover, and the linear mover drives the wind knife away from or close to the partition.

9. An automatic emulsion oil skimming device according to any one of claims 1-4, 6-8, characterized in that: The lower part or bottom of the static chamber is provided with an outlet for liquid to flow out.

10. An automatic emulsion oil skimming device according to claim 9, characterized in that: An electric valve is installed on the outlet.

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