Multistage floating ball automatic control type oil-water separation device

Abstract

The utility model discloses a multistage floating ball automatic control type oil-water separation device, and the device is assembled by main, upper and lower shell bodies, the first / second floating ball and switch, oleophilic hydrophobic filter screen, circuit board and relay chamber are equipped in the main shell body, the upper shell body is equipped with the respiratory chamber, and the lower shell body is equipped with the drain port and oil outlet, and the upper and lower shell bodies are fastened through the fixed column. When working, the mixed liquid is first separated by gravity settling + filter screen in the first separation chamber, the oil enters the second separation chamber, and the water is automatically controlled to drain by the first floating ball switch, the oil in the second separation chamber enters the storage chamber through the cofferdam, the residual water is automatically controlled to drain by the second floating ball, and twice separation is realized. The device can avoid the misoperation of the floating ball, improve the oil purity, ensure the stable and safe working condition, and is suitable for the industrial oil-water separation scene.

Description

Technical Field

[0001] This utility model relates to the technical field of oil-water separation equipment, specifically to an oil-water separation device that achieves multi-stage separation based on the float self-control principle. Background Technology

[0002] Existing oil-water separation devices often lack precise automatic control mechanisms, leading to malfunctions in switching on and off, resulting in insufficient purity of the separated oil and difficulties in ensuring operational stability and safety. For example, some devices rely solely on a single separation, failing to effectively remove residual water; some float control mechanisms are not optimized for the buoyancy differences between oil and water, easily causing drainage abnormalities due to buoyancy judgment errors, affecting separation efficiency and equipment operational safety. Utility Model Content

[0003] This invention aims to solve the problems of low oil purity, easy malfunction of float switch, and poor working stability in existing oil-water separation devices, and provides a multi-stage float self-control device that can achieve two-stage oil-water separation and is based on precise oil-water separation control switch.

[0004] To achieve the above objectives, this utility model employs the following technical solution:

[0005] A multi-stage float-controlled oil-water separator includes a main shell, an upper shell, and a lower shell;

[0006] The main housing is detachably assembled with the upper housing and the lower housing; fixing posts are symmetrically arranged along the upper edge of the upper housing and the lower housing, respectively.

[0007] The main housing contains a first float and float switch, an oleophilic and hydrophobic filter, a circuit board and relay chamber, a second float, and an oil pipe connector. The oleophilic and hydrophobic filter is vertically installed inside the main housing, dividing the main housing into a first separation chamber and a second separation chamber. The first float and float switch are located in the first separation chamber, and the second float is located in the second separation chamber. The circuit board and relay chamber are connected to the first float and float switch and the second float respectively via wires.

[0008] The upper shell is provided with a breathing chamber; the lower shell is provided with a primary separation chamber drain outlet, a secondary separation chamber drain outlet, and an oil outlet; the primary separation chamber drain outlet is connected to the first separation chamber, the secondary separation chamber drain outlet is connected to the second separation chamber, and the oil outlet is connected to the storage chamber of the second separation chamber separated by a dike; one end of the oil pipe joint is connected to the second separation chamber, and the other end extends to the outside of the main shell.

[0009] Furthermore, the oleophilic and hydrophobic filter screen is made of polytetrafluoroethylene with a pore size of 5-10 μm.

[0010] Furthermore, the triggering conditions for the first float and the float switch are as follows: when the buoyancy of the water in the first separation chamber on the first float is greater than the weight of the float itself, the switch is turned on; when the buoyancy is less than the weight of the float itself, the switch is turned off.

[0011] Furthermore, the circuit board and relay chamber are waterproof.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] Through two separation processes (first-stage separation via filter screen + second-stage drainage via float ball), the purity of the oil is significantly improved and the water content is reduced.

[0014] The float switch is designed based on the difference in buoyancy between oil and water (the float buoyancy is less than the oil buoyancy when it encounters oil, and it floats when it encounters water up to the set buoyancy), which avoids false activation of the switch and ensures the stability of the working conditions and the safety of equipment operation;

[0015] The breathing chamber balances air pressure, and the fixed column enhances the overall structural stability, making it suitable for long-term continuous operation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of a multi-stage float-controlled oil-water separator according to the present invention (I);

[0017] Figure 2 This is a schematic diagram (II) of the overall structure of a multi-stage float-controlled oil-water separator according to this utility model. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0019] In the description of the embodiments of this utility model, it should be noted that if terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," or "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, terms such as "first," "second," and "third" are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0020] Furthermore, the use of terms such as "horizontal," "vertical," and "sag" does not imply that the component must be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0021] In the description of the embodiments of this utility model, "a plurality of" means at least two.

[0022] In the description of the embodiments of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0023] Example:

[0024] like Figure 1 , 2 As shown, the present invention relates to a multi-stage float-controlled self-controlled oil-water separator, characterized in that:

[0025] The device is composed of a main housing 1, an upper housing 2, and a lower housing 3, which can be detachably assembled. The upper housing 2 is connected to the top of the main housing 1, and the lower housing 3 is connected to the bottom of the main housing 1. Fixing columns 4 are symmetrically arranged along the middle part of the upper and lower housings respectively.

[0026] The main housing 1 contains a first float 5 and a matching float switch 6, an oleophilic and hydrophobic filter screen 7, an oil pipe connector 8, a circuit board and relay chamber 9, and a second float 10.

[0027] The oleophilic and hydrophobic filter screen 7 is vertically installed inside the main housing 1, dividing the interior of the main housing 1 into a first separation chamber (near the water inlet) and a second separation chamber (near the oil outlet); the first float 5 and float switch 6 are located in the first separation chamber, and the second float 10 is located in the second separation chamber; the circuit board and the relay chamber 9 are connected to the first float switch 5 and the second float 10 respectively through wires to control the switch action; one end of the oil pipe connector 8 is connected to the second separation chamber, and the other end extends to the outside of the main housing;

[0028] The top of the upper shell 2 is provided with a breathing chamber 11, which is used to balance the air pressure inside and outside the device and avoid the separation process being affected by the pressure difference.

[0029] The lower shell 3 is provided with a primary separation chamber drain outlet 12 (connected to the drain end of the first float switch) corresponding to the first separation chamber position, a secondary separation chamber drain outlet 13 (connected to the drainage structure controlled by the second float) corresponding to the second separation chamber position, and an oil outlet 14 corresponding to the oil storage area (the storage space separated by the second separation chamber through the cofferdam).

[0030] working methods

[0031] Primary separation: After the mixed liquid to be treated (containing oil and water) enters the first separation chamber, based on the principle of gravity sedimentation and the density difference between oil and water, combined with the oleophilic and hydrophobic properties of the filter screen, the oil penetrates the filter screen and enters the second separation chamber, while the water remains in the first separation chamber. When the water level in the first separation chamber reaches the set value (i.e., the buoyancy of the water on the first float is greater than the weight of the float itself), the first float rises and triggers the float switch to open, and the water is discharged through the drain outlet of the primary separation chamber. When the water level drops to the point where the buoyancy is less than the weight of the float, the float sinks and the switch automatically closes.

[0032] Secondary separation: Oil entering the second separation chamber is separated by a dike (the dike height is higher than the set oil level and lower than the set water level) and gravity settling. The oil then passes over the dike and enters the storage chamber, eventually being supplied to the equipment through the oil outlet. If residual water enters the second separation chamber with the oil, when the water level reaches the set buoyancy value, the second float rises, triggering the corresponding drainage structure to open. The water is then discharged through the secondary separation chamber drain, achieving secondary water removal.

[0033] In practice:

[0034] Component selection: The filter screen is made of polytetrafluoroethylene (PTFE) material, which is oleophilic and hydrophobic, with a pore size of 5-10μm; the float is made of stainless steel and is filled with an appropriate amount of counterweight medium (such as silicone oil) to ensure that the buoyancy in oil is less than its own weight and the buoyancy in water is greater than its own weight when the set liquid level is reached; the circuit board and relay chamber are made of waterproof components to avoid oil and water corrosion.

[0035] Assembly process: First, fix the filter screen, first float and switch, second float, circuit board and relay chamber to the corresponding positions of the main housing and complete the wire connection; then seal the upper housing to the top of the main housing (add rubber sealing ring), and seal the lower housing to the bottom of the main housing; finally, tighten the upper and lower housings with the fixing column bolts to ensure that the whole is sealed and leak-free.

[0036] Commissioning and operation: A simulated oil-water mixture (30% oil content and 70% water content) was introduced. The trigger level of the first float switch was adjusted to 2 / 3 of the height of the first separation chamber, and the trigger level of the second float switch was adjusted to 1 / 2 of the height of the second separation chamber. After operation, the water content of the oil at the outlet was found to be ≤0.5%, and the switch did not malfunction even once, which met the design requirements.

[0037] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A multi-stage float-controlled self-regulating oil-water separator, characterized in that: Includes the main shell, upper shell, and lower shell; The main housing is detachably assembled with the upper housing and the lower housing; fixing posts are symmetrically arranged along the upper edge of the upper housing and the lower housing, respectively. The main housing contains a first float and float switch, an oleophilic and hydrophobic filter, a circuit board and relay chamber, a second float, and an oil pipe connector. The oleophilic and hydrophobic filter is vertically installed inside the main housing, dividing the main housing into a first separation chamber and a second separation chamber. The first float and float switch are located in the first separation chamber, and the second float is located in the second separation chamber. The circuit board and relay chamber are connected to the first float and float switch and the second float respectively via wires. The upper shell is provided with a breathing chamber; the lower shell is provided with a primary separation chamber drain outlet, a secondary separation chamber drain outlet, and an oil outlet; the primary separation chamber drain outlet is connected to the first separation chamber, the secondary separation chamber drain outlet is connected to the second separation chamber, and the oil outlet is connected to the storage chamber of the second separation chamber separated by a dike; one end of the oil pipe joint is connected to the second separation chamber, and the other end extends to the outside of the main shell.

2. The multi-stage float-controlled self-controlled oil-water separator according to claim 1, characterized in that: The oleophilic and hydrophobic filter screen is made of polytetrafluoroethylene with a pore size of 5-10μm.

3. The multi-stage float-controlled self-controlled oil-water separator according to claim 1, characterized in that: The triggering conditions for the first float and the float switch are as follows: when the buoyancy of the water in the first separation chamber on the first float is greater than the weight of the float itself, the switch is turned on; when the buoyancy is less than the weight of the float itself, the switch is turned off.

4. The multi-stage float-controlled self-controlled oil-water separator according to claim 1, characterized in that: The circuit board and relay chamber are waterproof.

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