Oil-water separation device

Abstract

The utility model belongs to the technical field of separation equipment for immiscible liquid, and particularly relates to an oil-water separation device which comprises a separation tank, an oil outlet formed in the top of the separation tank, a water outlet formed in the bottom of the separation tank and an air bag arranged at the bottom of the separation tank. The air inflation assembly is used for inflating the air bag and increasing the size of the air bag. In the application, the air bag is arranged for occupying the space in the separation tank, so that the purpose of increasing the liquid level of the oil layer is achieved on the premise of not additionally adding water or adding less water, and the liquid level of oil can be discharged from the oil outlet.

Description

Technical Field

[0001] The utility model belongs to the technical field of separation equipment for immiscible liquids, and in particular relates to an oil-water separation device. Background Art

[0002] The existing oil-water separation process is mainly carried out by the oil-water separation tank. The lower part of the oil-water separation tank is provided with a drain port, and the upper part is provided with an oil drain port. The oil and water will naturally separate due to their different specific gravities, so that water is discharged from the drain port and oil is discharged from the oil drain port. The drain port is set at the lower part of the oil-water separation tank to discharge the water in the separation tank as much as possible, avoiding the water stored in the separation tank from deteriorating and generating odor. The oil drain port is set at the upper part of the separation tank, so that there is sufficient time for the oil and water to separate.

[0003] In this way, the distance between the drain port and the oil drain port is large. When the water in the separation tank is less and the height of the oil layer is lower than the oil drain port, the oil cannot smoothly enter the oil drain port. It is necessary to inject clean water into the separation tank again to raise the water level, thereby raising the height of the oil layer and allowing the oil layer to enter the oil drain port. This will cause a large amount of clean water to be wasted, which is not conducive to saving water resources. Utility Model Content

[0004] The purpose of the utility model is to provide an oil-water separation device to solve the problem that a large amount of water resources will be wasted when the liquid level of the oil layer is increased by water replenishment.

[0005] In order to achieve the above technical purpose, the technical solution adopted by the utility model is as follows:

[0006] An oil-water separation device comprises a separation tank, an oil outlet arranged at the top of the separation tank, a water outlet arranged at the bottom of the separation tank and an air bag arranged at the bottom of the separation tank, wherein the air bag is connected to an inflation component, and the inflation component is used to inflate the air bag and increase the volume of the air bag.

[0007] In the present application, an air bag is provided to occupy the space in the separation tank, so as to increase the liquid level of the oil layer without adding extra water or adding less water, so that the liquid level of the oil can be discharged from the oil outlet.

[0008] Furthermore, a filter plate is provided in the oil-water pool, an inlet is provided on the side wall of the separation pool, the filter plate is arranged at the inlet, the filter plate cooperates with the side wall of the separation pool to form a buffer chamber, and filter holes are distributed on the filter plate.

[0009] In the present application, the filter plate is used to filter out impurity particles in the oil-water mixture. Of course, the filter plate and the buffer chamber formed by the side wall of the separation tank can buffer the flow rate of the oil-water mixture and increase the rate of static stratification of the oil-water mixture.

[0010] Furthermore, the inflation component is an air pump, and the air pump and the airbag are connected through a connecting pipe.

[0011] Furthermore, the inflation component includes a feed filling box, an air filling pipe and a water filling pipe, the feed filling box is provided with an air filling chamber and a water filling chamber, a partition is provided between the air filling chamber and the water filling chamber, and the feed filling box is provided with a control mechanism for controlling the air filling chamber and the water filling chamber to replenish water and air at the same time.

[0012] In the present application, a water replenishment chamber and an air replenishment chamber are provided, and the water and gas in the water replenishment chamber and the air replenishment chamber can be discharged into the separation tank and the airbag at the same time under the action of the control mechanism. In this way, the inflation component can be controlled to inflate the airbag only when it is necessary to replenish water into the separation tank to raise the liquid level, or when the amount of water is small and the oil level cannot be raised even if the airbag is inflated, water and air can be replenished into the separation tank and the airbag at the same time.

[0013] Furthermore, the control mechanism includes two groups of pistons slidably arranged in the air replenishment chamber and the water replenishment chamber respectively, and mounting plates are installed on the tops of the two groups of pistons. The mounting plates are transmission-connected to a driving mechanism, and the driving mechanism is used to control the mounting plates and the pistons to slide along the air replenishment chamber.

[0014] Furthermore, the driving mechanism includes a motor, the motor is arranged on the feeding box, the output end of the motor is transmission-connected with a screw, and the screw is threadedly connected to the mounting plate.

[0015] Furthermore, a first one-way valve is arranged in the water replenishment pipe, a water inlet is opened on the water replenishment chamber, a second one-way valve is arranged in the water inlet, and the water flow direction at the water replenishment chamber is water inlet, water replenishment chamber, and water replenishment pipe in sequence.

[0016] In the present application, the gas filled in the airbag can be drawn out and returned to the air replenishing chamber for recycling when the piston is reset. However, the water filled in the separation tank cannot be reused because it is mixed with the liquid in the separation tank. A one-way valve is provided to prevent water from flowing back.

[0017] The utility model adopting the above technical solution has the following advantages:

[0018] 1. In the present application, an air bag is provided to occupy the space in the separation tank, so as to increase the liquid level of the oil layer without adding extra water or adding less water, so that the liquid level of the oil can be discharged from the oil outlet.

[0019] 2. In this application, the filter plate is used to filter out impurity particles in the oil-water mixture. Of course, the filter plate and the buffer chamber formed by the side wall of the separation tank can buffer the flow rate of the oil-water mixture and increase the rate of static stratification of the oil-water mixture.

[0020] 3. In the present application, a water replenishment chamber and an air replenishment chamber are provided, and the water and gas in the water replenishment chamber and the air replenishment chamber can be discharged into the separation tank and the airbag at the same time under the action of the control mechanism. In this way, the inflation component can be controlled to inflate the airbag only when it is necessary to replenish water into the separation tank to raise the liquid level, or when the amount of water is small and the oil level cannot be raised even if the airbag is inflated, water and air can be replenished into the separation tank and the airbag at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention can be further described by the non-limiting embodiments given in the accompanying drawings;

[0022] Figure 1 It is a structural schematic diagram of the separation tank of the utility model;

[0023] Figure 2 It is a structural schematic diagram of the inflatable component of the utility model;

[0024] The main component symbols are described as follows:

[0025] 1. Separation tank; 2. Oil outlet; 3. Air bag;

[0026] 4. Inflatable assembly; 41. Feed box; 42. Air supply pipe; 43. Water supply pipe; 44. Air supply chamber; 45. Water supply chamber; 46. Partition; 47. Piston; 48. Mounting plate; 49. Motor;

[0027] 50. screw; 51. water inlet;

[0028] 5. Feed inlet; 6. Filter plate; 61. Filter hole; 7. Water outlet. DETAILED DESCRIPTION

[0029] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that in the drawings or in the specification, similar or identical parts use the same figure numbers, and the implementation methods not shown or described in the drawings are forms known to ordinary technicians in the relevant technical field. In addition, the directional terms mentioned in the embodiments, such as "upper", "lower", "top", "bottom", "left", "right", "front", "back", etc., are only referenced to the directions of the drawings and are not used to limit the scope of protection of the present invention.

[0030] like Figure 1-2As shown, an oil-water separation device of the utility model comprises a separation tank 1, an oil outlet 2 arranged at the top of the separation tank 1, a water outlet 7 arranged at the bottom of the separation tank 1, and an air bag 3 arranged at the bottom of the separation tank 1. After the oil-water mixture is allowed to stand and stratify in the separation tank 1, the oil is extracted from the oil outlet 2 at the top of the separation tank 1. The air bag 3 is used to occupy the space in the separation tank 1, and to increase the liquid level of the oil layer without adding additional water or adding less water, so that the oil level can be discharged at the oil outlet 2. The air bag 3 is connected to the inflation component 4, and the inflation component 4 is used to inflate the air bag 3 and increase the volume of the air bag 3. The oil outlet 2 can be set on the top plate of the separation tank 1 to extract the oil through a negative pressure pump, or it can be set on the side wall of the separation tank 1 to automatically flow out when the oil level reaches.

[0031] The oil-water separation device also includes a filter plate 6. An inlet 5 is provided on the side wall of the separation tank 1, and the filter plate 6 is arranged at the inlet 5. The filter plate 6 cooperates with the side wall of the separation tank 1 to form a buffer chamber, and filter holes 61 are distributed on the filter plate 6. The filter plate 6 is used to filter out impurity particles in the oil-water mixture. Of course, the filter plate 6 cooperates with the buffer chamber formed by the side wall of the separation tank 1 to buffer the flow rate of the oil-water mixture and increase the rate of static stratification of the oil-water mixture. Preferably, the filter plate 6 can be set as a detachable structure, so that it is convenient to remove impurities in the buffer chamber.

[0032] The inflation component 4 may be an air pump, and the air pump is connected to the air bag 3 via a connecting pipe. When the oil level needs to be raised, the air pump inflates the air bag 3 to raise the oil level. When the oil level does not need to be raised, the gas in the air bag 3 is pumped out and reset.

[0033] In the present application, the inflation component 4 is configured to replenish water into the separation tank 1 while inflating the airbag 3. In this way, the inflation component 4 can be controlled to inflate the airbag 3 only when it is necessary to replenish water into the separation tank 1 to raise the liquid level, or when the amount of water is small and even if the inflated airbag cannot reach the level of the oil, water and air are replenished into the separation tank and the airbag at the same time. Specifically, the inflation component 4 includes a replenishment box 41, an air replenishment pipe 42 and a water replenishment pipe 43, and an air replenishment chamber 44 and a water replenishment chamber 45 are provided in the replenishment box 41, and a partition 46 is provided between the air replenishment chamber 44 and the water replenishment chamber 45, and a control mechanism for controlling the air replenishment chamber 44 and the water replenishment chamber 45 to replenish water and air at the same time is provided in the replenishment box 41. The control mechanism is used to fill the fluid in the air replenishment chamber 44 and the water replenishment chamber 45 into the airbag 3 and the separation tank 1 respectively. Although it is also necessary to add water to the separation tank 1 at this time, due to the expansion of the air bag 3, only a small amount of water is needed to achieve the purpose of raising the liquid level of the oil layer.

[0034] The control mechanism includes two groups of pistons 47 slidably disposed in the air replenishment chamber 44 and the water replenishment chamber 45, respectively. A mounting plate 48 is mounted on the top of the two groups of pistons 47. The mounting plate 48 is transmission-connected to the driving mechanism, and the driving mechanism is used to control the mounting plate 48 and the piston 47 to slide along the air replenishment chamber 44. The mounting plate 48 is configured to be able to slide only relative to the feed replenishment box 41, and cannot rotate relative to the feed replenishment box 41. Figure 2 , the mounting plate can be set to a square plate structure that matches the inner wall of the feed box 41. When the piston 47 is pressed down, the fluid in the air replenishment chamber 44 and the water replenishment chamber 45 can be pressed into the air bag 3 and the separation tank 1 respectively, so as to achieve the purpose of raising the oil layer liquid level. Of course, the control mechanism can also be an air pump, which is used to inflate the air replenishment chamber 44 and the water replenishment chamber 45 to discharge the fluid in the air replenishment chamber 44 and the water replenishment chamber 45. The piston 47 is set in the present application, which has a simple structure and a convenient operation method.

[0035] The driving mechanism includes a motor 49. The motor 49 is arranged on the feeding box 41. The output end of the motor 49 is transmission-connected with a screw 50. The screw 50 is screwed to the mounting plate 48. When the screw 50 rotates under the drive of the motor, it can drive the mounting plate 48 to rise or slide down. The motor 49 can preferably be a servo motor, which can control the movement direction of the mounting plate 48. In the present application, the motor 49 and the screw 50 are used to drive the piston 47 to move. In actual use, a linear drive component such as a telescopic rod and a hydraulic rod can be set to drive the piston 47. In the present application, the motor 49 is used as the driving source, and the movement stroke of the piston 47 can be controlled in a pre-programmed manner.

[0036] A first one-way valve is arranged in the water replenishment pipe 43, a water inlet 51 is arranged on the water replenishment chamber 45, a second one-way valve is arranged in the water inlet 51, and the water flow direction at the water replenishment chamber 45 is the water inlet 51, the water replenishment chamber 45, and the water replenishment pipe 43 in sequence. The water inlet 51 is externally connected to a water replenishment point such as a water source. In the present application, the gas filled in the airbag 3 can be drawn back into the air replenishment chamber 44 when the piston 47 is reset, and recycled. However, the water filled in the separation tank 1 cannot be reused because it is mixed with the liquid in the separation tank 1. In the present application, a one-way valve is arranged to prevent water backflow.

[0037] The above is a detailed introduction to an oil-water separation device provided by the utility model. The description of the specific embodiment is only used to help understand the method and core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. An oil-water separation device, characterized in that: The invention comprises a separation tank (1), an oil outlet (2) arranged at the top of the separation tank (1), a water outlet (7) arranged at the bottom of the separation tank (1), and an air bag (3) arranged at the bottom of the separation tank (1); the air bag (3) is connected to an inflation component (4); the inflation component (4) is used to inflate the air bag (3) and increase the volume of the air bag (3).

2. The oil-water separation device according to claim 1, characterized in that: A filter plate (6) is arranged in the separation tank (1), a feed inlet (5) is arranged on the side wall of the separation tank (1), the filter plate (6) is arranged at the feed inlet (5), the filter plate (6) cooperates with the side wall of the separation tank (1) to form a buffer chamber, and filter holes (61) are distributed on the filter plate (6).

3. The oil-water separation device according to claim 1, characterized in that: The inflation component (4) is an air pump, and the air pump and the air bag (3) are connected via a connecting pipe.

4. The oil-water separation device according to claim 1, characterized in that: The inflation assembly (4) comprises a feed replenishment box (41), an air replenishment pipe (42) and a water replenishment pipe (43); an air replenishment chamber (44) and a water replenishment chamber (45) are arranged in the feed replenishment box (41); a partition (46) is arranged between the air replenishment chamber (44) and the water replenishment chamber (45); and a control mechanism for controlling the air replenishment chamber (44) and the water replenishment chamber (45) to replenish water and replenish air simultaneously is arranged in the feed replenishment box (41).

5. The oil-water separation device according to claim 4, characterized in that: The control mechanism comprises two groups of pistons (47) respectively slidably arranged in the air replenishing chamber (44) and the water replenishing chamber (45), and mounting plates (48) are installed on the tops of the two groups of pistons (47). The mounting plates (48) are transmission-connected to a driving mechanism, and the driving mechanism is used to control the mounting plates (48) and the pistons (47) to slide along the air replenishing chamber (44).

6. The oil-water separation device according to claim 5, characterized in that: The driving mechanism comprises a motor (49), wherein the motor (49) is arranged on the feeding box (41), and an output end of the motor (49) is drivingly connected to a screw rod (50), and the screw rod (50) is screwed to the mounting plate (48).

7. The oil-water separation device according to claim 5, characterized in that: A first one-way valve is arranged in the water replenishment pipe (43), a water inlet (51) is provided on the water replenishment chamber (45), a second one-way valve is arranged in the water inlet (51), and the direction of water flow in the water replenishment chamber (45) is the water inlet (51), the water replenishment chamber (45), and the water replenishment pipe (43) in sequence.

Images