Oil-water separation device

Abstract

The oil-water separation device provided by the present disclosure relates to the technical field of oil-water separation equipment. The oil-water separation device comprises a shell, a first partition plate, a second partition plate, a heating assembly and a liquid inlet pipe. The first partition plate is located in the shell to form a first cavity with the shell. The second partition plate is located in the first cavity to divide the first cavity into a heating cavity and a demulsification cavity. The heating cavity is located below the demulsification cavity. A second gap exists between the end of the second partition plate away from the first partition plate and the shell. The heating assembly is located in the heating cavity. Part of the liquid inlet pipe is located in the heating cavity. At least part of the liquid inlet pipe located in the heating cavity extends towards the first partition plate. The liquid outlet end of the liquid inlet pipe is located on the side of the heating assembly away from the second gap. Thus, the cleaning liquid can have a long flow path in the first cavity, so that the cleaning liquid flowing into the first cavity can be fully heated and demulsified, thereby ensuring the oil-water separation effect of the cleaning liquid.

Description

Technical Field

[0001] This disclosure relates to the field of oil-water separation equipment technology, and in particular to an oil-water separation device. Background Technology

[0002] Before painting a car body, cleaning fluid is needed to remove oil and dirt from the surface in order to facilitate subsequent surface treatment and electrophoresis. As more and more oil is removed by the cleaning fluid, it forms an emulsion, gradually reducing the cleaning effectiveness. Therefore, it is necessary to separate the oil from the cleaning fluid; otherwise, the oil on the car body will not be completely removed, affecting subsequent processes.

[0003] In related technologies, oil-water separators are typically used to separate oil from cleaning fluids. Most oil-water separators use heating to break up the emulsion, and then gravity or other forces cause the oil to float to the surface, thus removing the oil.

[0004] However, in the oil-water separation devices of related technologies, the heating and demulsification process of the cleaning fluid is often carried out in one chamber. This results in some of the cleaning fluid being discharged into the clear fluid chamber without being fully heated and demulsified, which in turn leads to poor oil-water separation of this part of the cleaning fluid. Utility Model Content

[0005] This disclosure provides an oil-water separation device that can solve the aforementioned technical problems existing in related technologies. The technical solution is as follows: The oil-water separation device is provided, which includes a shell, a first partition, a second partition, a heating assembly, and an inlet pipe; The first partition is located inside the housing and connected to the housing to form a first cavity with the housing, and there is a first gap between the top of the first partition and the housing; The second partition is located inside the first cavity and is connected to the first partition and the shell respectively, so as to divide the first cavity into a heating cavity and a demulsification cavity. The heating cavity is located below the demulsification cavity, and there is a second gap between the end of the second partition away from the first partition and the shell. The heating component is located inside the heating chamber; A portion of the inlet pipe is located within the heating chamber, and at least a portion of the inlet pipe within the heating chamber extends toward the first partition. The outlet end of the inlet pipe is located on the side of the heating assembly away from the second gap and is located on the side of the heating assembly.

[0006] In some possible implementations, the portion of the inlet pipe located within the heating chamber includes a first pipe segment and a second pipe segment connected together. The first pipe segment extends along the direction of the heating assembly near the first partition. The second pipe segment is connected to the end of the first pipe segment near the first partition. The second pipe segment is located between the heating assembly and the first partition. The axis of the second pipe segment is parallel to the first partition. The sidewall of the second pipe segment has an outlet hole, which is a strip-shaped hole. The length direction of the strip-shaped hole is the same as the direction in which the second pipe segment extends.

[0007] In some possible implementations, the outlet hole is located on the pipe wall of the second pipe section near the first partition.

[0008] In some possible implementations, the housing includes a base plate and a first side plate, a second side plate, a third side plate, and a fourth side plate connected sequentially to the base plate, wherein the first side plate is opposite to the third side plate, the second side plate is opposite to the fourth side plate, and the fourth side plate is connected to the first side plate; The first partition is opposite to the first side plate and is connected to the bottom plate, the second side plate and the fourth side plate respectively. The second partition is opposite to the bottom plate and is connected to the second side plate and the fourth side plate respectively, and has a second gap with the first side plate. The second partition, the first partition, the first side plate, the bottom plate, the second side plate and the fourth side plate form the heating cavity. The second partition, the first partition, the first side plate, the second side plate and the fourth side plate form the demulsification cavity.

[0009] In some possible implementations, the end of the second partition closest to the first side plate is tilted away from the bottom plate.

[0010] In some possible implementations, the oil-water separation device further includes a third baffle, an oil skimming structure, and an oil skimming pipe; The third partition is opposite to the first partition and is located on the side of the first partition away from the first side plate. It is connected to the bottom plate, the second side plate and the fourth side plate to form a clear liquid cavity with the first partition, the bottom plate, the second side plate and the fourth side plate. The bottom of the clear liquid cavity has a first liquid outlet. The oil skimming structure is connected to the third partition, and the position of the oil skimming structure is lower than the position of the first partition. The inlet end of the skimming pipe is connected to the skimming structure.

[0011] In some possible implementations, the first partition includes a first part, a second part, and a third part connected in sequence. The first part and the third part are respectively opposite to the first side plate, the second part is opposite to the bottom plate and connected to the second partition, the first part is located below the second part, the third part is located above the second part, and the distance from the first part to the third partition is less than the distance from the third part to the third partition.

[0012] In some possible implementations, the second partition, the first portion, and the second portion are integrally formed, and the third portion is independent of the integrally formed structure.

[0013] In some possible implementations, the oil-water separator further includes a fourth baffle, a return pipe, and an oil drain pipe; The fourth partition is opposite to the third partition and is located on the side of the third partition away from the first partition. It is connected to the bottom plate, the second side plate, and the fourth side plate. The fourth partition, the third partition, the bottom plate, the second side plate, and the fourth side plate form a return liquid chamber. The bottom of the return liquid chamber has a second liquid outlet. The fourth partition, the third side plate, the bottom plate, the second side plate, and the fourth side plate form a sludge and oil chamber. The outlet end of the skimming pipe is connected to the bottom of the sludge chamber; The inlet end of the return pipe is connected to the bottom of the sludge chamber and is lower than the outlet end of the skimming pipe; the inlet end of the return pipe is connected to the return chamber. The inlet end of the oil drain pipe is connected to the sludge chamber, and the outlet end of the oil drain pipe is guided outside the housing.

[0014] In some possible implementations, the oil-water separator further includes a first regulating pipe, a second regulating pipe, and a connecting pipe. The first regulating pipe is connected to the outlet end of the return pipe, and the height of the first regulating pipe is adjustable. The second regulating pipe is connected to the inlet end of the oil drain pipe, and the height of the second regulating pipe is adjustable. The connecting pipe is used to connect the first outlet and the second outlet, and a control valve is provided on the connecting pipe.

[0015] The beneficial effects of the technical solution provided in this disclosure include at least the following: The heating chamber and the demulsification chamber are separated by a second baffle. After the cleaning fluid enters the heating chamber, it needs to flow from the outlet of the inlet pipe to the second gap before flowing into the demulsification chamber. Then it needs to rise to the surface of the demulsification chamber and flow to the highest position of the first baffle before leaving the first chamber through the first gap. This ensures that the cleaning fluid has a long flow path in the first chamber, so that the cleaning fluid flowing into the first chamber can be fully heated and demulsified, thus ensuring the oil-water separation effect of the cleaning fluid.

[0016] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a front view of an oil-water separation device provided in an embodiment of this disclosure; Figure 2 This is a top view of an oil-water separation device provided in an embodiment of this disclosure; Figure 3 This is a top view of an oil skimming structure provided in an embodiment of this disclosure.

[0019] Figure label: 1. Shell; 11. Bottom plate; 12. First side plate; 13. Second side plate; 14. Third side plate; 15. Fourth side plate; 16. Top plate; 101. First gap; 102. Heating chamber; 103. Demulsification chamber; 104. Second gap; 105. Clear liquid chamber; 1051. First liquid outlet; 106. Return liquid chamber; 1061. Second liquid outlet; 107. Sludge and oil chamber; 1071. Third liquid outlet; 21. First partition; 211. First part; 212. Second part; 213. Third part; 22. Second partition; 23. Third partition; 24. Fourth partition; 3. Heating components; 4. Inlet pipe; 41. First pipe section; 42. Second pipe section; 421. Outlet port; 5. Skimming structure; 51. Locking bolt; 6. Skimming pipe; 7. Return pipe; 8. Discharge pipe; 91. First regulating pipe; 92. Second regulating pipe; 10. Connecting pipeline; 1001. Control valve. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this disclosure clearer, the embodiments of this disclosure will be described in further detail below with reference to the accompanying drawings.

[0021] It should be noted that, unless otherwise specified, the embodiments and features described in this disclosure can be combined with each other. This disclosure will now be described in detail with reference to the accompanying drawings and embodiments.

[0022] This disclosure provides an oil-water separation device. For example... Figure 1 As shown, the oil-water separator includes a housing 1, a first partition 21, a second partition 22, a heating assembly 3, and an inlet pipe 4. The first partition 21 is located inside and connected to the housing 1, forming a first cavity. A first gap 101 exists between the top of the first partition 21 and the housing 1. The second partition 22 is located within the first cavity and is connected to both the first partition 21 and the housing 1, dividing the first cavity into a heating cavity 102 and a demulsification cavity 103. The heating cavity 102 is located below the demulsification cavity 103. A second gap 104 exists between the end of the second partition 22 away from the first partition 21 and the housing 1. The heating assembly 3 is located within the heating cavity 102. A portion of the inlet pipe 4 is located within the heating cavity 102, with at least a portion extending towards the first partition 21. The outlet end of the inlet pipe 4 is located on the side of the heating assembly 3 away from the second gap 104.

[0023] Using the oil-water separation device provided in this embodiment, the heating chamber 102 and the demulsification chamber 103 are separated by the second partition 22. After the cleaning fluid enters the heating chamber 102, the cleaning fluid needs to flow from the outlet end of the inlet pipe 4 to the second gap 104 before flowing into the demulsification chamber 103. Then, it needs to float to the top of the demulsification chamber 103 and flow to the highest position of the first partition 21 before leaving the first chamber through the first gap 101. This ensures that the cleaning fluid has a long flow path in the first chamber, so that the cleaning fluid flowing into the first chamber can be fully heated and demulsified, thereby ensuring the oil-water separation effect of the cleaning fluid.

[0024] like Figure 2As shown, in some examples, the portion of the inlet pipe 4 located within the heating chamber 102 includes a first pipe segment 41 and a second pipe segment 42 connected together. The first pipe segment 41 extends in a direction close to the first partition 21, and the second pipe segment 42 is connected to the end of the first pipe segment 41 near the first partition 21. The second pipe segment 42 is located between the heating assembly 3 and the first partition 21. The axis of the second pipe segment 42 is parallel to the first partition 21. The sidewall of the second pipe segment 42 has an outlet hole 421, which is a strip-shaped hole. The length direction of the strip-shaped hole is the same as the extension direction of the second pipe segment 42.

[0025] Thus, the flow path of the cleaning fluid can be extended through the first pipe section 41, thereby further extending the heating time of the cleaning fluid and improving the demulsification effect. Furthermore, since the outlet hole 421 is located in the second pipe section 42, which is situated on the side of the first pipe section 41 closest to the first partition 21, the flow path of the liquid from the outlet to the second gap 104 is longer, further enhancing the demulsification effect. In addition, since the outlet hole 421 is a strip-shaped hole, and the length direction of the strip-shaped hole is the same as the extension direction of the second pipe section 42, the cleaning fluid can flow out of the first pipe section 41 in a more dispersed manner while maintaining the discharge velocity, ensuring that the cleaning fluid is sufficiently heated and demulsified, thereby improving the demulsification effect.

[0026] Optionally, the width of the strip-shaped holes is 10 mm.

[0027] like Figure 2 As shown, in some examples, the outlet hole 421 is located on the wall of the second pipe section 42 near the first partition 21.

[0028] Thus, by setting the outlet hole 421 on the pipe wall of the second pipe section 42 close to the first partition 21, when the cleaning fluid flows out from the outlet hole 421, it will move towards the first partition 21 instead of towards the second gap 104, thereby further improving the flow path of the cleaning fluid and increasing the heating time of the cleaning fluid.

[0029] In some examples, combined Figure 1 , Figure 2 As shown, the axis of the second pipe section 42 is located on the horizontal plane, and the angle θ between the line connecting the center of the liquid outlet 421 and the axis of the second pipe section 42 and the horizontal plane ranges from 20° to 60°. Optionally, θ can be 30°.

[0030] Combination Figure 1 , Figure 2As shown, in some examples, the housing 1 includes a base plate 11 and a first side plate 12, a second side plate 13, a third side plate 14, and a fourth side plate 15 sequentially connected to the base plate 11. The first side plate 12 is opposite to the third side plate 14, the second side plate 13 is opposite to the fourth side plate 15, and the fourth side plate 15 is connected to the first side plate 12. A first partition 21 is opposite to the first side plate 12 and is connected to the base plate 11, the second side plate 13, and the fourth side plate 15 respectively. A second partition 22 is opposite to the base plate 11 and is connected to the second side plate 13 and the fourth side plate 15 respectively, and has a second gap 104 with the first side plate 12. The second partition 22, the first partition 21, the first side plate 12, the base plate 11, the second side plate 13, and the fourth side plate 15 form a heating chamber 102, and the second partition 22, the first partition 21, the first side plate 12, the second side plate 13, and the fourth side plate 15 form a demulsification chamber 103.

[0031] At least a portion of the first partition 21 is parallel to the first side plate 12, and at least a portion of the second partition 22 is parallel to the bottom plate 11.

[0032] The axis of the first pipe section 41 and the axis of the second pipe section 42 are parallel to the base plate 11, respectively.

[0033] The housing 1 also includes a top plate 16, which is opposite to the bottom plate 11 and is connected to the first side plate 12, the second side plate 13, the third side plate 14 and the fourth side plate 15 respectively. A first gap 101 is formed between the first partition 21 and the top plate 16.

[0034] like Figure 1 As shown, in some examples, the end of the second partition 22 near the first side plate 12 is tilted away from the bottom plate 11.

[0035] In this way, the flow of cleaning fluid from heating chamber 102 to demulsification chamber 103 can be guided by the raised portion of the second partition 22, so that the cleaning fluid can flow from heating chamber 102 into demulsification chamber 103.

[0036] Combination Figure 1 , Figure 2 As shown, in some examples, the oil-water separation device further includes a third partition 23, an oil skimming structure 5, and an oil skimming pipe 6. The third partition 23 is opposite to the first partition 21 and located on the side of the first partition 21 away from the first side plate 12. It is connected to the bottom plate 11, the second side plate 13, and the fourth side plate 15 to form a clear liquid chamber 105 with the first partition 21, bottom plate 11, second side plate 13, and fourth side plate 15. The bottom of the clear liquid chamber 105 has a first outlet 1051. The oil skimming structure 5 is connected to the third partition 23, and its position is lower than that of the first partition 21. The inlet end of the oil skimming pipe 6 is connected to the oil skimming structure 5.

[0037] Thus, when the cleaning fluid moves to the top of the demulsification chamber 103, the fully demulsified cleaning fluid overflows from the first gap 101 into the clear fluid chamber 105. In the clear fluid chamber 105, the oil in the cleaning fluid rises to the surface, while the clear fluid sinks. This allows the oily portion to be collected by the skimming structure 5 and discharged through the skimming pipe 6. The clear fluid can then be discharged through the first outlet 1051 for recycling.

[0038] In addition, the cleaning fluid in the clear liquid chamber 105 has a high temperature, which will come into contact with the first partition 21, so that the heat can be conducted to the heating chamber 102 through the first partition 21 to recover and utilize the residual heat of the cleaning fluid in the clear liquid chamber 105.

[0039] like Figure 3 The oil skimming structure 5 is provided with multiple locking bolts 51, which are used to install the oil skimming structure 5 onto the third partition 23. The upper part of the oil skimming structure 5 is wave-shaped, which allows the sludge to pass through more smoothly, while the clear liquid does not pass through easily, thereby reducing the water content of the sludge.

[0040] like Figure 1 As shown, in some examples, the first partition 21 includes a first part 211, a second part 212, and a third part 213 connected in sequence. The first part 211 and the third part 213 are respectively opposite to the first side plate 12. The second part 212 is opposite to the bottom plate 11 and connected to the second partition 22. The first part 211 is located below the second part 212, and the third part 213 is located above the second part 212. The distance from the first part 211 to the third partition 23 is less than the distance from the third part 213 to the third partition 23.

[0041] In this way, the contact area between the first partition 21 and the cleaning fluid in the cleaning chamber can be increased, thereby improving the heat exchange efficiency between the first partition 21 and the cleaning fluid, and further improving the efficiency of recovering and utilizing the residual heat of the cleaning fluid in the cleaning fluid chamber 105.

[0042] In addition, the volume of the clear liquid chamber 105 can be increased without increasing the overall size of the oil-water separator, thereby ensuring the clear liquid chamber 105 can collect clear liquid effectively.

[0043] like Figure 1 As shown, in some examples, the second partition 22, the first part 211 and the second part 212 are integrally formed structures, and the third part 213 is separate from the integrally formed structure.

[0044] Thus, the second partition 22, the first part 211, and the second part 212 are L-shaped as a whole, which is more convenient to process than the more complex shape of the first partition 21. The third part 213 is independent of the integrally formed structure. The way the third part 231 is connected to the second part 212 is simpler than the way the second partition 22 is connected to the second part 212, which can greatly improve the assembly efficiency of the oil-water separation device.

[0045] Combination Figure 1 , Figure 2 As shown, in some examples, the oil-water separator further includes a fourth partition 24 and a return pipe 7. The fourth partition 24 is opposite to the third partition 23 and located on the side of the third partition 23 away from the first partition 21. It is connected to the bottom plate 11, the second side plate 13, and the fourth side plate 15. The fourth partition 24, the third partition 23, the bottom plate 11, the second side plate 13, and the fourth side plate 15 form a return chamber 106, with a second outlet 1061 at the bottom. The fourth partition 24, the third side plate 14, the bottom plate 11, the second side plate 13, and the fourth side plate 15 form a sludge-oil chamber 107. The outlet end of the skimming pipe 6 is connected to the bottom of the sludge-oil chamber 107. The inlet end of the return pipe 7 is connected to the bottom of the sludge-oil chamber 107 and is lower than the outlet end of the skimming pipe 6. The inlet end of the return pipe 7 is connected to the return chamber 106. The inlet end of the oil drain pipe 8 is connected to the sludge oil chamber 107, and the outlet end of the oil drain pipe 8 is guided to the outside of the housing 1.

[0046] Thus, the sludge and oily portion of the cleaning fluid can be collected through the sludge and oily chamber 107. This sludge and oily portion carries away some of the clear fluid. In the sludge and oily chamber 107, the clear fluid settles at the bottom, while the sludge and oily portion floats on the surface. This allows the sludge and oily portion to be discharged through the drain pipe 8. Simultaneously, the clear fluid in the sludge and oily chamber 107 is guided to the return fluid chamber 106 through the return fluid pipe 7, where the clear fluid carried away by the sludge and oily portion is collected. This clear fluid can then be discharged through the second outlet 1061. Furthermore, since the inlet section of the return fluid pipe 7 is lower than the outlet end of the skimming pipe 6, the possibility of sludge and oily portion entering the return fluid pipe 7 is reduced.

[0047] Oily waste is classified as hazardous waste, and its treatment incurs costs; the higher the water content, the higher the treatment cost. By using the return pipe 7 to collect the clear liquid at the bottom of the oily waste tank into the return chamber 106, the water content of the oily waste discharged from the tank is controlled below 10%, thus significantly reducing the treatment cost.

[0048] Optionally, the bottom of the sludge chamber 107 has a third outlet 1071. The third outlet 1071 can release the liquid in the sludge chamber 107 to facilitate the transportation or storage of the oil-water separation device.

[0049] like Figure 1 As shown, in some examples, the oil-water separator further includes a first regulating pipe 91, a second regulating pipe 92, and a connecting pipe 10. The first regulating pipe 91 is connected to the outlet end of the return pipe 7, and the height of the first regulating pipe 91 is adjustable. The second regulating pipe 92 is connected to the inlet end of the oil drain pipe 8, and the height of the second regulating pipe 92 is adjustable. The connecting pipe 10 is used to connect the first outlet 1051 and the second outlet 1061, and a control valve 1001 is provided on the connecting pipe 10.

[0050] Thus, the connecting pipe 10 can connect the clear liquid chamber 105 and the return liquid chamber 106, thereby controlling the liquid level of the clear liquid chamber 105, the sludge oil chamber 107 and the return liquid chamber 106 by adjusting the amount of oil skimming by the skimming structure 5, the height of the first regulating pipe 91 and the height of the second regulating pipe 92, so that the liquid levels of the clear liquid chamber 105, the sludge oil chamber 107 and the return liquid chamber 106 can reach a balanced state for continuous automatic oil removal.

[0051] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this disclosure. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms “comprising” and / or “including” are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0052] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of this disclosure. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0053] In the description of this disclosure, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings and is only for the convenience of describing this disclosure and simplifying the description. Unless otherwise stated, these directional terms 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 on the scope of protection of this disclosure; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0054] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0055] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this disclosure.

[0056] The above description is merely a preferred embodiment of this disclosure and is not intended to limit this disclosure. Various modifications and variations can be made to this disclosure by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the scope of protection of this disclosure.

Claims

1. An oil-water separation device, characterized in that, The oil-water separation device includes a shell (1), a first partition (21), a second partition (22), a heating component (3), and an inlet pipe (4); The first partition (21) is located inside the housing (1) and connected to the housing (1) to form a first cavity with the housing (1). There is a first gap (101) between the top of the first partition (21) and the housing (1). The second partition (22) is located in the first cavity and is connected to the first partition (21) and the shell (1) respectively, so as to divide the first cavity into a heating cavity (102) and a demulsification cavity (103). The heating cavity (102) is located below the demulsification cavity (103). There is a second gap (104) between the end of the second partition (22) away from the first partition (21) and the shell (1). The heating component (3) is located inside the heating chamber (102); A portion of the inlet pipe (4) is located within the heating chamber (102), and at least a portion of the inlet pipe (4) within the heating chamber (102) extends toward the first partition (21). The outlet end of the inlet pipe (4) is located on the side of the heating assembly (3) away from the second gap (104).

2. The oil-water separation device according to claim 1, characterized in that, The portion of the inlet pipe (4) located within the heating chamber (102) includes a first pipe section (41) and a second pipe section (42) connected together. The first pipe section (41) extends along the direction of the heating assembly (3) near the first partition (21). The second pipe section (42) is connected to the end of the first pipe section (41) near the first partition (21). The second pipe section (42) is located between the heating assembly (3) and the first partition (21). The axis of the second pipe section (42) is parallel to the first partition (21). The sidewall of the second pipe section (42) has an outlet hole (421). The outlet hole (421) is a strip-shaped hole, and the length direction of the strip-shaped hole is the same as the direction in which the second pipe section (42) extends.

3. The oil-water separation device according to claim 2, characterized in that, The outlet hole (421) is located on the pipe wall of the second pipe section (42) near the first partition (21).

4. The oil-water separation device according to any one of claims 1-3, characterized in that, The housing (1) includes a bottom plate (11) and a first side plate (12), a second side plate (13), a third side plate (14) and a fourth side plate (15) connected sequentially to the bottom plate (11). The first side plate (12) is opposite to the third side plate (14), the second side plate (13) is opposite to the fourth side plate (15), and the fourth side plate (15) is connected to the first side plate (12). The first partition (21) is opposite to the first side plate (12) and is connected to the bottom plate (11), the second side plate (13) and the fourth side plate (15) respectively. The second partition (22) is opposite to the bottom plate (11) and is connected to the second side plate (13) and the fourth side plate (15) respectively, and has a second gap (104) with the first side plate (12). The second partition (22), the first partition (21), the first side plate (12), the bottom plate (11), the second side plate (13) and the fourth side plate (15) form the heating cavity (102). The second partition (22), the first partition (21), the first side plate (12), the second side plate (13) and the fourth side plate (15) form the demulsification cavity (103).

5. The oil-water separation device according to claim 4, characterized in that, The second partition (22) is tilted away from the bottom plate (11) at one end near the first side plate (12).

6. The oil-water separation device according to claim 4, characterized in that, The oil-water separation device also includes a third baffle (23), an oil skimming structure (5), and an oil skimming pipe (6). The third partition (23) is opposite to the first partition (21) and is located on the side of the first partition (21) away from the first side plate (12). It is connected to the bottom plate (11), the second side plate (13) and the fourth side plate (15) to form a clear liquid cavity (105) with the first partition (21), the bottom plate (11), the second side plate (13) and the fourth side plate (15). The bottom of the clear liquid cavity (105) has a first liquid outlet (1051). The skimming structure (5) is connected to the third partition (23), and the position of the skimming structure (5) is lower than the position of the first partition (21); The inlet end of the skimming pipe (6) is connected to the skimming structure (5).

7. The oil-water separation device according to claim 6, characterized in that, The first partition (21) includes a first part (211), a second part (212) and a third part (213) connected in sequence. The first part (211) and the third part (213) are respectively opposite to the first side plate (12). The second part (212) is opposite to the bottom plate (11) and connected to the second partition (22). The first part (211) is located below the second part (212), and the third part (213) is located above the second part (212). The distance from the first part (211) to the third partition (23) is less than the distance from the third part (213) to the third partition (23).

8. The oil-water separation device according to claim 7, characterized in that, The second partition (22), the first part (211) and the second part (212) are integrally formed structures, and the third part (213) is independent of the integrally formed structure.

9. The oil-water separation device according to claim 6, characterized in that, The oil-water separation device also includes a fourth partition (24), a return pipe (7), and an oil drain pipe (8); The fourth partition (24) is opposite to the third partition (23) and is located on the side of the third partition (23) away from the first partition (21). It is connected to the bottom plate (11), the second side plate (13) and the fourth side plate (15). The fourth partition (24), the third partition (23), the bottom plate (11), the second side plate (13) and the fourth side plate (15) form a return liquid chamber (106). The bottom of the return liquid chamber (106) has a second liquid outlet (1061). The fourth partition (24), the third side plate (14), the bottom plate (11), the second side plate (13) and the fourth side plate (15) form a sludge and oil chamber (107). The liquid outlet of the skimming pipe (6) is connected to the bottom of the sludge chamber (107); The inlet end of the return pipe (7) is connected to the bottom of the sludge chamber (107) and is lower than the outlet end of the skimming pipe (6). The inlet end of the return pipe (7) is connected to the return chamber (106). The inlet end of the oil drain pipe (8) is connected to the sludge chamber (107), and the outlet end of the oil drain pipe (8) is guided to the outside of the housing (1).

10. The oil-water separation device according to claim 9, characterized in that, The oil-water separation device further includes a first regulating pipe (91), a second regulating pipe (92), and a connecting pipe (10). The first regulating pipe (91) is connected to the liquid outlet of the return pipe (7), and the height of the first regulating pipe (91) is adjustable. The second regulating pipe (92) is connected to the liquid inlet of the oil drain pipe (8), and the height of the second regulating pipe (92) is adjustable. The connecting pipe (10) is used to connect the first liquid outlet (1051) and the second liquid outlet (1061). A control valve (1001) is provided on the connecting pipe (10).

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