A liquid separation device for chemical production

Abstract

The present invention provides a liquid separation device for chemical production, belonging to the technical field of oil-water separation. The liquid separation device for chemical production comprises a shell, and also comprises: an oil filter plate, wherein the oil filter plate can separate the shell into an oil filter chamber and a drainage chamber which are distributed inside and outside, and the water in the oil filter chamber can enter the drainage chamber through the oil filter plate; by reducing the amount of grease, the pressure of the grease on the oil filter plate is reduced, so that the elastic component controls the deformation of the oil filter plate, and when the amount of grease is small, the cross-sectional area inside the oil filter chamber can be reduced, and then the grease in the oil filter chamber can be gathered, the height of the grease is increased, and the grease is more accurately discharged into the oil drainage pipeline, thereby improving the quality of oil collection.

Description

Technical Field

[0001] The invention belongs to the technical field of oil-water separation, and in particular relates to a liquid separation device for chemical production. Background Art

[0002] In the chemical production process, the generation of oil and water is a common problem. This phenomenon usually occurs in the fields of oil extraction, oil refining, chemical industry, environmental protection, etc. Improper treatment of oil-water mixture will not only cause environmental pollution, but also may cause a series of ecological problems. Therefore, the research and development and application of oil-water separation technology has become the focus of attention in the industry.

[0003] The Chinese patent with the authorization announcement number CN206762326U discloses a non-powered oil-water separation device, including a float, a tank body, and a floating oil collecting pan, wherein the float is arranged on the floating oil collecting pan, and the floating oil collecting pan is arranged in the tank body, characterized in that: a vent is arranged on the top of the tank body, and an oil-water mixture water inlet pipe, an oil discharge pipe and a water outlet pipe are arranged on the side, and the floating oil collecting pan is under the oil layer liquid surface and in a floating state under the buoyancy of the float, and an oil collecting pan rib is arranged on the top of the floating oil collecting pan, and an oil outlet is arranged at the lower middle part, and the oil outlet is connected to an oil discharge hose, and the other end of the oil discharge hose is connected to an oil discharge pipe, and the oil discharge hose is fixed on a hose bracket. The patent automatically collects and discharges oil through a floating oil collecting pan, does not require energy consumption, is energy-saving and environmentally friendly, and has obvious economic and environmental benefits.

[0004] However, when existing equipment collects oil-water mixtures at a relatively shallow oil surface, it is often difficult to accurately distinguish between oil and water, resulting in a large amount of water being collected together, which in turn significantly affects the collection quality of the crude oil. Summary of the invention

[0005] The purpose of the present invention is to provide a liquid separation device for chemical production, aiming to solve the problem that the oil collection device with an oil-water separation device in the prior art is often difficult to accurately distinguish between oil and water when collecting an oil-water mixture with a relatively shallow oil surface, resulting in a large amount of water being collected together, thereby significantly affecting the collection quality of crude oil.

[0006] To achieve the above object, the present invention provides the following technical solution: a liquid separation device for chemical production, comprising a housing, and further comprising:

[0007] An oil filter plate, the oil filter plate can separate the housing into an oil filter chamber and a drainage chamber, and water in the oil filter chamber can enter the drainage chamber through the oil filter plate;

[0008] The elastic component is connected to the oil filter plate. When the pressure of the grease in the oil filter chamber on the oil filter plate decreases, the elastic component can cause the oil filter plate to deform so as to reduce the area of ​​the horizontal cross section in the oil filter chamber. When the pressure of the grease in the oil filter chamber on the oil filter plate increases, the oil filter plate can overcome the force of the elastic component and cause the oil filter plate to deform so as to increase the area of ​​the horizontal cross section in the oil filter chamber.

[0009] The oil discharge pipe is arranged in the oil filter chamber and communicated with the oil filter chamber, and is used to discharge the grease in the oil filter chamber to the outside of the housing. The elastic member is used to deform the oil filter plate, so that the cross-sectional area in the oil filter chamber is reduced, so that the grease can be gathered, the depth of the grease is increased, and the accurate discharge of the grease is more convenient.

[0010] The beneficial effects of the present invention are as follows: by deforming the oil filter plate, the grease in the oil filter chamber can be gathered, the height of the grease can be increased, the grease can be discharged into the oil discharge pipe more accurately, and the quality of oil collection can be improved.

[0011] A further technical solution of the present invention is that the housing includes a fixed frame and a lifting shell, the lifting shell can form a drainage chamber with the oil filter plate, the oil filter plate is located on the fixed frame and can separate the drainage chamber from the oil filter chamber, the lifting shell can slide up and down on the fixed frame, a baffle is provided on the lifting shell, when the lifting shell moves upward, the oil filter plate can be blocked, and a one-way valve capable of draining liquid to the outside of the housing is provided on the lifting shell. The lifting shell can move upward to drive the drainage chamber to move upward, so that the water in the drainage chamber can be discharged.

[0012] The effect is that waste water in the shell body can be discharged outside the shell by lifting the lifting shell.

[0013] A further technical solution of the present invention is that a crushing brush is provided on the lifting shell, one end of which is located inside the oil discharge pipe and can crush the solidified grease on the oil discharge pipe. By providing the crushing brush, the oil discharge pipe can be prevented from being blocked.

[0014] The effect is that the solidified grease can be cleaned by the crushing brush to prevent the oil discharge pipe from being blocked.

[0015] A further technical solution of the present invention is that the oil filter plate includes an elastic plate and an oil filter membrane, the oil filter membrane is arranged on the elastic plate and covers the surface of the elastic plate, the upper and lower ends of the elastic plate are fixed on the shell, and the vertical cross section is in an arc shape, and the side of the elastic plate can contact the side wall of the shell. By arranging the oil filter plate to have an elastic structure, when the oil filter plate is deformed, the oil filter plate itself can generate a certain vibration, and the grease or impurities adhering to the oil filter plate itself can be shaken off, thereby avoiding clogging of the oil filter plate.

[0016] The effect is that the grease adhering to the oil filter plate can be shaken off by the elastic plate.

[0017] A further technical solution of the present invention is that the oil discharge pipeline includes an oil discharge channel arranged in the housing, one end of the oil discharge channel connected to the oil filter chamber is an oil inlet, and the other end of the oil outlet is connected to the outside, the oil inlet is lower than the top of the oil filter plate, and a shielding member is arranged at the oil inlet to prevent oil and water from directly entering the oil discharge channel. By arranging the shielding member on the oil discharge pipeline, it is possible to prevent the oil-water mixture from flowing into the drainage pipeline when entering the oil filter chamber.

[0018] The effect is that the shielding member can prevent the oil-water mixture from flowing into the drainage pipe when it enters the oil filter cavity.

[0019] A further technical solution of the present invention is that a filter plate is provided on the lifting shell, and the filter plate can seal the top of the shell body and is used for filtering impurities in oil and water.

[0020] A further technical solution of the present invention is that the crushing brush is cylindrical and one end of the crushing brush rotates on the filter plate, the other end of the crushing brush is provided with a brush head and extends to the inside of the oil discharge pipe, and the crushing brush is connected to the shielding member through a spiral thread.

[0021] A further technical solution of the present invention is that a driving component for driving the lifting shell to move up and down is also provided on the fixed frame, and a switch assembly for controlling the opening and closing of the driving component is provided inside the oil filter chamber. When the oil filter plate is deformed toward the inside of the oil filter chamber, the switch assembly can control the driving component to operate, and when the oil filter plate is deformed toward the drainage chamber, the switch assembly can control the driving component to stop.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. A liquid separation device for chemical production reduces the amount of grease and the pressure of the grease on the oil filter plate, so that the elastic component controls the deformation of the oil filter plate. When the amount of grease is small, the cross-sectional area inside the oil filter chamber can be reduced, and the grease in the oil filter chamber can be gathered to increase the height of the grease, so that the grease can be discharged into the oil discharge pipe more accurately, thereby improving the quality of oil collection.

[0024] 2. The liquid separation device for chemical production is provided with a crushing brush on the oil discharge pipe. The crushing brush can crush the condensed grease inside the oil discharge pipe to prevent the grease from agglomerating and clogging the oil discharge channel of the oil discharge pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0026] Figure 1 It is a structural schematic diagram of a specific embodiment of the present invention;

[0027] Figure 2 It is a schematic diagram of the internal structure of a specific embodiment of the present invention;

[0028] Figure 3 It is a schematic diagram of the internal structure of another perspective of a specific embodiment of the present invention;

[0029] Figure 4 It is a structural schematic diagram of a fixed frame in a specific embodiment of the present invention;

[0030] Figure 5 It is a structural schematic diagram of a lifting shell in a specific embodiment of the present invention;

[0031] Figure 6 It is a structural schematic diagram of an oil filter plate in a specific embodiment of the present invention;

[0032] Figure 7 It is a schematic diagram of the structure of a crushing brush in a specific embodiment of the present invention;

[0033] Figure 8 for Figure 3 A schematic diagram of the structure at A in the middle is an enlarged schematic diagram of the structure;

[0034] Fig. 9 This is a schematic diagram of the state structure when the oil layer is thicker;

[0035] Fig.10 This is a schematic diagram of the structure when there is less grease inside the oil filter cavity;

[0036] Fig.11 This is a schematic diagram of the state structure of the drainage chamber when draining water.

[0037] In the figure: 1. Shell; 101. Fixed frame; 102. Lifting shell; 103. Baffle; 104. Filter plate; 105. One-way valve; 2. Oil filter plate; 21. Elastic plate; 22. Oil filter membrane; 23. Notch; 3. Oil filter chamber; 4. Drain plate; 5. Elastic component; 6. Oil drain pipe; 61. Oil drain channel; 62. Oil inlet; 63. Oil outlet; 64. Shielding member; 7. Drain chamber; 8. Crushing brush; 81. Brush head; 9. Driving component; 91. Screw; 92. Connecting plate; 93. Guide column; 10. Switch assembly. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] See also Figure 1-Figure 11 , the present invention provides the following technical solutions: a liquid separation device for chemical production, comprising a housing 1, and further comprising: a plurality of oil filter plates 2, a guide plate 4, an elastic component 5 and an oil discharge pipeline 6;

[0040] See also Figure 2 and Figure 3 , multiple oil filter plates 2, which may be four, six, eight, etc., are used in this embodiment. The oil filter plates 2 can filter the grease in the oil and water, so as to achieve the effect of oil-water separation. The oil filter plates 2 can all stand on the inner bottom wall of the shell 1, and are evenly distributed in an annular array inside the shell 1 with the vertical central axis of the shell 1 as the rotation axis. The cross-sectional shape of the shell 1 is cross-shaped, corresponding to the four oil filter plates 2, so that each oil filter plate 2 is installed on the outward protrusion of the shell 1 (when there are eight oil filter plates 2, the cross-sectional shape of the shell 1 can be a cross shape), and the two sides of the oil filter plate 2 are both attached to the inner side wall of the shell 1, so that the shell 1 can block the gap between every two adjacent oil filter plates 2, so that the oil filter plates 2 and the shell 1 can enclose an oil filter chamber 3, and an opening is formed above the oil filter chamber 3, and the oil filter plate 2 and the part of the shell 1 protruding outward can form a drainage chamber 7, and the water filtered by the oil filter plate 2 can flow into the drainage chamber 7 for storage;

[0041] In order to prevent oil and water from flowing into the drainage chamber 7, the guide plate 4 is located above the portion of the housing 1 protruding outwards. The guide plate 4 is in the shape of an inclined plate, with a higher end fixed to the edge of the housing 1, and a lower end extending to the inside of the oil filter chamber 3, and the side edge can contact the inner side wall of the portion of the housing protruding outwards, so that the oil and water can flow into the oil filter chamber 3 under the action of the guide plate 4;

[0042] See also Figure 1 , Figure 2 and Figure 4 The oil drain pipe 6 is located in the middle of the oil filter chamber 3, one end of which penetrates the outside of the housing 1 and is connected to the external oil storage device. When the oil drain pipe 6 is set, the end of the oil drain pipe 6 located inside the oil filter chamber 3 should be lower than the top opening of the oil filter chamber 3, so that the grease level can enter the oil drain pipe 6, and at the same time, it is prevented that the grease will pass through the oil filter plate 2 and enter the drainage chamber 7;

[0043] The elastic component 5 is a tension spring, one end of which is fixed on the oil drain pipe 6, and the other end is fixedly connected to the middle part of the oil filter plate 2. The number of elastic components 5 is the same as the number of oil filter plates 2, and they correspond one to one. When the elastic component 5 releases energy and resets, it can pull the oil filter plate 2 to deform, so that the middle part of the oil filter plate 2 can move closer to the oil drain pipe 6 to reduce the area of ​​the horizontal cross-section in the oil filter chamber 3, wherein the oil filter plate 2 has plasticity.

[0044] See also Fig.10 and Fig.11 In a specific embodiment of the present invention, the housing 1 is installed in the oil pool so that the oil level is slightly higher than the housing 1, and the position of the housing 1 is fixed by the oil discharge pipe 6, so that a large amount of grease and a small amount of wastewater flow into the oil filter chamber 3 through the guide plate 4. At this time, the proportion of grease in the oil filter chamber 3 is relatively large, so the middle part of the oil filter plate 2 can be stretched outward by the grease (such as Fig. 9 As shown in the figure, the grease in the oil and water is filtered through the oil filter plate 2, and the grease components are retained in the interior of the oil filter chamber 3. By continuously flowing oil and water into the interior of the oil filter chamber 3, the liquid level of the grease can be raised, so that the grease can flow into the oil discharge pipe 6 and be discharged through the oil discharge pipe 6. When the internal waste water of the oil filter chamber 3 accounts for a relatively large proportion, since the density of water is greater than that of oil, the water in the oil filter chamber 3 will be located at the bottom of the oil, and part of the water will enter the drainage chamber 7 through the oil filter plate 2, so that the liquid level of the water in the oil filter chamber 3 is close to the top opening of the oil discharge pipe 6. When the liquid levels of water in the oil filter chamber 3 and the oil discharge pipe 6 continue to rise, the amount of oil in the oil filter plate 2 is reduced, and the thrust of the grease on the oil filter plate 2 is reduced, causing the elastic component 5 to pull the oil filter plate 2 to deform (as shown in the figure). Fig.10 As shown), the cross-sectional area inside the oil filter chamber 3 can be reduced, so that the grease in the oil filter chamber 3 can be gathered, the height of the grease can be increased, and the grease can be discharged into the oil discharge pipe 6 more accurately, thereby improving the quality of oil collection.

[0045] See also Figure 4 and Figure 5The housing 1 is composed of a fixed frame 101 and a lifting shell 102. The lifting shell 102 surrounds the outside of the fixed frame 101, and the lifting shell 102 can slide up and down on the fixed frame 101. The sliding method can be achieved by setting a slide groove on the fixed frame 101 and setting a slider sliding inside the slide groove on the lifting shell 102, so that the sliding of the lifting shell 102 can be limited. The sliding method is not limited to one type, and can also be achieved by the matching connection of the sliding sleeve and the sliding column. The fixed frame 101 is fixedly connected to the oil discharge pipeline 6, so that the position of the fixed frame 101 can be fixed below the original liquid level of the outside world through the oil discharge pipeline 6, and below and close to the lifting shell 102. The oil filter plate 2 is fixedly connected with a baffle 103, which is a straight plate. The coverage area of ​​the baffle 103 should be larger than the area of ​​the oil filter plate 2. The baffle 103 is arranged perpendicular to the bottom of the lifting shell 102. When the lifting shell 102 moves upward, the baffle 103 can be driven to move upward. When the baffle 103 moves upward, the oil filter plate 2 can be blocked to prevent the oil and water outside the shell 1 from infiltrating into the oil filter chamber 3 through the oil filter plate 2. A one-way valve 105 is also arranged on the lifting shell 102. The one-way valve 105 is a common prior art, and the specific structure is not repeated here. The one-way valve 105 can discharge the water source inside the drainage chamber 7 to the outside of the shell 1;

[0046] The specific principle is that after a certain amount of water is collected inside the drainage chamber 7, the oil drainage pipe 6 is driven by the external shell 1 to move upward a certain distance. The driving method can use a telescopic rod (not shown in the figure) to make the shell 1 move straight up and down, so that the top of the oil filter plate 2 is higher than the liquid level of the external oil and water, and then the lifting shell 102 is moved upward to move the drainage chamber 7 upward. When the liquid level in the drainage chamber 7 is higher than the liquid level outside the shell 1, the water pressure can push open the one-way valve 105 located above the liquid level outside the shell 1, so that the water inside the drainage chamber 7 can be discharged, so that the device can continuously separate the oil and water.

[0047] The oil drain pipeline 6 includes an oil drain channel 61 arranged in the shell 1. The oil drain channel 61 vertically penetrates the outer side of the shell 1. The material of the oil drain channel 61 can be a hard material such as metal, so that the position of the shell 1 can be fixed to prevent the shell 1 from shaking on the liquid surface. In addition, by adjusting the height of the oil drain channel 61, the depth of the shell 1 entering the oil and water can be adjusted. One end of the oil drain channel 61 is located inside the oil filter chamber 3 and is connected to the oil filter chamber 3. This end is the oil inlet 62, and the other end is the oil outlet 63 and is connected to the external oil storage equipment, which can be used to discharge grease. The oil inlet 62 is lower than At the top of the oil filter plate 2, in order to enable some grease in the oil filter chamber 3 to be discharged from the oil drain pipe 6 in time and prevent the grease from flowing into the drainage chamber 7, a shielding member 64 is provided at the oil inlet 62. The shielding member 64 is located directly above the oil inlet 62 and can block the top of the oil inlet 62, but leaves a channel for the grease to flow into the oil inlet 62, thereby not affecting the discharge of the grease. When oil and water enter the oil filter chamber 3 through the guide plate 4, the oil inlet 62 can be blocked by the shielding member 64 to prevent oil and water from entering the interior of the oil inlet 62, thereby avoiding affecting the quality of grease collection.

[0048] See also Figure 1 and Figure 2 Specifically, a filter plate 104 is provided on the lifting shell 102, and the filter plate 104 is located above the oil filter chamber 3 and the drainage chamber 7. The filter plate 104 has multiple filter holes, which can be used to filter larger impurities in the oil and water. The middle part of the filter plate 104 bulges upward, and the edge is fixedly connected to the lifting shell 102. The side is also fitted with the inner wall of the shell 1, so as to close the top of the shell 1. When the oil and water enter the interior of the shell 1, they need to pass through the filter holes of the filter plate 104, so that the impurities in the oil and water can be filtered.

[0049] In some special cases, such as when the temperature is relatively cold in winter, the temperature of the grease drops relatively quickly, causing the grease to agglomerate quickly, and the agglomerated grease is likely to block the oil drain pipe 6, thereby easily causing the problem of unsmooth oil drainage. Therefore, in this embodiment, a crushing brush 8 is provided on the lifting shell 102. The crushing brush 8 is cylindrical, and a brush head 81 is provided at one end thereof. The brush head 81 can be inserted into the inside of the oil drain pipe 6. When the lifting shell 102 moves up and down, the brush head 81 can be driven to move up and down inside the oil drain pipe 6, so that the solidified grease inside the oil drain pipe 6 can be crushed, thereby playing the role of unblocking the oil drain pipe 6;

[0050] See also Figure 8When the brush head 81 dredges the oil drain pipe 6, if the bristles of the brush head 81 are dense, there may be a problem of affecting the circulation of grease. However, if the bristles are sparse, an effective dredging effect cannot be achieved. Therefore, the above scheme is further improved. First, the bristles of the brush head 81 in the scheme are sparse, and one end of the crushing brush 8 can rotate on the filter plate 104. A threaded groove is provided on the surface of the crushing brush 8, so that the crushing brush 8 can be threadedly connected with the shielding member 64. The shielding member 64 is located on the oil drain pipe 6. Since the shielding member 64 is fixed, when the lifting shell 102 drives the crushing brush 8 to move up and down, the crushing brush 8 can be rotated relative to the shielding member 64, thereby achieving the effect of crushing the grease agglomerated inside the oil drain pipe 6. Since the bristles of the brush head 81 are sparse, the circulation of grease is not affected at the same time.

[0051] In order to solve this problem, another embodiment is provided. In this embodiment, the bristles of the brush are arranged in a spiral shape. When the crushing brush 8 moves up and down, it can also achieve a good crushing effect without affecting the circulation of grease.

[0052] See also Figure 7 The oil filter plate 2 includes an elastic plate 21 and an oil filter membrane 22. The oil filter membrane 22 is fixed on the side surface of the elastic plate 21 and covers the surface of the elastic plate 21 to achieve a precise filtering effect. The oil filter membrane 22 can be an oil filter cloth. A plurality of notches 23 are provided on the elastic plate 21. The notches 23 allow water to pass through. The upper and lower ends of the elastic plate 21 can be fixed on the fixing frame 101, and the elastic plate 21 is bent into a shape with an arc in vertical cross-section. The side edge of the elastic plate 21 can contact the side wall of the shell 1. When the elastic component 5 pulls the oil filter plate 2 to gradually move toward the oil discharge pipe 6, when it crosses the critical point of the oil filter plate 2, the oil filter plate 2 will instantly bounce toward the oil discharge pipe 6, so that the grease adhering to the surface of the oil filter plate 2 can be bounced off and then floated on the water surface for treatment.

[0053] See also Figure 2Specifically, the fixed frame 101 is also provided with a driving component 9 for driving the lifting shell 102 to move up and down. The driving component 9 is a waterproof motor, which is installed at the bottom of the fixed frame 101, and a waterproof cover is fixed on the fixed frame 101 to further waterproof the driving component 9. A screw 91 is connected to the output end of the waterproof motor. A plurality of baffles 103 are connected to each other through a connecting plate 92. The screw 91 can be threadedly connected with the connecting plate 92. When the screw 91 rotates, the baffle 103 can be driven to move up and down, thereby driving the baffle 103 and the lifting shell 102 to move up and down, and the oil filter chamber 3 A switch assembly 10 for controlling the opening and closing of the driving component 9 is provided inside. The switch assembly 10 is a waterproof switch. A guide column 93 is fixedly connected to the side of the oil filter plate 2 close to the switch assembly 10. When the oil filter plate 2 is deformed toward the inside of the oil filter chamber 3, the guide column 93 can contact the switch assembly 10, so that the switch assembly 10 is opened to control the operation of the driving component 9. When the oil filter plate 2 is deformed toward the drainage chamber 7, the guide column 93 is away from the switch assembly 10, so that the switch assembly 10 can control the driving component 9 to stop after completing a stroke. Here, a stroke refers to a stroke after the lifting shell 102 rises and then falls back to reset.

Claims

1. A liquid separation device for chemical production, comprising a housing, characterized in that: Also includes: The oil filter plate can longitudinally separate the housing into an oil filter chamber and a drainage chamber distributed inside and outside, and the water in the oil filter chamber can enter the drainage chamber through the oil filter plate; The elastic component is connected to the oil filter plate. When the pressure of the grease in the oil filter chamber on the oil filter plate decreases, the elastic component can cause the oil filter plate to deform so as to reduce the area of ​​the horizontal cross section in the oil filter chamber. When the pressure of the grease in the oil filter chamber on the oil filter plate increases, the oil filter plate can overcome the force of the elastic component and cause the oil filter plate to deform so as to increase the area of ​​the horizontal cross section in the oil filter chamber. An oil discharge pipeline is arranged in the oil filter chamber and communicated with the oil filter chamber, and is used to discharge the grease in the oil filter chamber to the outside of the housing; The housing comprises a fixed frame and a lifting housing, the lifting housing can form a drainage chamber with the oil filter plate, the oil filter plate is located on the fixed frame, the lifting housing can slide up and down on the fixed frame, a baffle is provided on the lifting housing, when the lifting housing moves upward, the oil filter plate can be blocked, and a one-way valve capable of discharging liquid to the outside of the housing is provided on the lifting housing; The oil filter plate includes an elastic plate and an oil filter membrane, wherein the oil filter membrane is arranged on the elastic plate and covers the surface of the elastic plate, the upper and lower ends of the elastic plate are fixed on the shell, and the vertical cross section is in an arc shape, and the side edge of the elastic plate can contact the side wall of the shell; A driving component for driving the lifting shell to move up and down is also provided on the fixed frame, and a switch assembly for controlling the opening and closing of the driving component is provided inside the oil filter chamber. When the oil filter plate is deformed toward the inside of the oil filter chamber, the switch assembly can control the driving component to operate, and when the oil filter plate is deformed toward the drainage chamber, the switch assembly can control the driving component to stop.

2. A liquid separation device for chemical production according to claim 1, characterized in that: The lifting shell is provided with a crushing brush, one end of which is located inside the oil discharge pipeline and can crush the solidified grease on the oil discharge pipeline.

3. A liquid separation device for chemical production according to claim 2, characterized in that: The oil discharge pipeline includes an oil discharge channel arranged in the shell, one end of the oil discharge channel connected to the oil filter chamber is an oil inlet, and the other end is an oil outlet connected to the outside world, the oil inlet is lower than the top of the oil filter plate, and a shielding member is provided at the oil inlet to prevent oil and water from directly entering the oil discharge channel.

4. A liquid separation device for chemical production according to claim 3, characterized in that: The lifting shell is provided with a filter plate, which can seal the top of the shell and is used for filtering impurities in oil and water.

5. A liquid separation device for chemical production according to claim 4, characterized in that: The crushing brush is cylindrical and one end of the crushing brush rotates on the filter plate, and the other end is provided with a brush head and extends to the inside of the oil discharge pipeline, and the crushing brush is connected to the shielding member through a spiral thread.

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