Lubricating oil base oil refining device

Abstract

The invention relates to the technical field of lubricating oil production and processing, and discloses a lubricating oil base oil refining device which comprises a distillation tower and a condenser which are connected through a pipeline, the distillation tower is internally provided with a distillation chamber, and the device further comprises an annular filter screen fixedly arranged at the top of an inner cavity of the distillation tower; the movable plate is arranged on the inner wall of the distillation tower in a linear sliding mode and located between the distillation chamber and the annular filter screen, and the diameter of the movable plate is the same as the inner diameter of the distillation tower; and the self-cleaning assembly is arranged between the annular filter screen and the moving plate. According to the lubricating oil base oil refining device, the moving plate moves upwards under the action of a gas phase generated in the distillation process, and when the moving plate moves along the axis of the moving plate, the self-cleaning assembly is triggered to automatically clean impurities on the surface of the annular filter screen, so that the impurities fall on the moving plate and are convenient to collect, the trouble of manual cleaning is reduced, and the working efficiency is improved. And online cleaning is realized, and the continuity and high efficiency of the refining process of the base oil are ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of lubricating oil production and processing, and in particular to a lubricating oil base oil refining device. Background Art

[0002] Lubricant base oil refining involves the advanced treatment of base oils derived from crude oil processing through a series of physical and chemical methods. This refining process removes impurities, transforms non-ideal components, and improves base oil properties, such as oxidation resistance, wear resistance, and low-temperature fluidity. The core of this refining process lies in the efficient synergy between liquid separation and purification equipment (such as distillation towers, filters, and extraction towers) to gradually remove impurities and optimize composition.

[0003] A filter is usually installed at the top of the base oil refining distillation tower, which is mainly used to intercept impurities such as mist droplets and solid particles that may be carried during the distillation process to prevent them from entering the subsequent condensation system with the gas phase or affecting product quality. As the working time increases, high-viscosity impurities adhere to the filter and are difficult to fall off. Long-term accumulation will form a gel-like blockage, thereby affecting the refining efficiency of the base oil. Summary of the Invention

[0004] Technical problems solved In response to the above-mentioned shortcomings of the prior art, the present invention provides a lubricating oil base oil refining device, which can effectively solve the problem in the prior art that as the working time increases, high-viscosity impurities adhere to the filter screen and are difficult to fall off, and long-term accumulation will form colloidal blockages, thereby affecting the refining efficiency of the base oil. Technical Solution

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: The present invention provides a lubricating oil base oil refining device, comprising a distillation tower and a condenser connected by a pipeline, wherein a distillation chamber is provided in the distillation tower, and further comprising: An annular filter screen is fixedly arranged on the top of the inner cavity of the distillation tower; a movable plate, the movable plate being linearly slidably disposed on the inner wall of the distillation tower and being located between the distillation chamber and the annular filter screen, the diameter of the movable plate being the same as the inner diameter of the distillation tower; A self-cleaning component is arranged between the annular filter and the movable plate. When the movable plate moves along its own axis, the self-cleaning component automatically cleans impurities on the surface of the annular filter.

[0006] Furthermore, the movable plate is made of a high-temperature resistant lightweight material, an air inlet groove is provided on the inner wall of the distillation tower, and the air inlet groove is located between the annular filter screen and the movable plate.

[0007] Furthermore, the self-cleaning component includes a fixed plate fixedly arranged on the inner side of the annular filter, a sleeve is rotatably arranged on the bottom of the fixed plate, a lifting rod is slidably arranged on the inner side of the sleeve, and the bottom end of the lifting rod is connected to the wall of the movable plate, and a rotating cylinder is rotatably arranged at the center of the fixed plate, and the rotating cylinder is located on the outside of the sleeve.

[0008] Furthermore, an elastic member is connected between the top end of the lifting rod and the inner top wall of the rotating cylinder; when the movable plate does not move upward, the elastic member is in an initial state.

[0009] Furthermore, brush strips are symmetrically provided on the bottom of the rotating drum through a connecting rod, and the connecting rod is in an inverted "L" shape as a whole, and the brush surface of the brush strip is in contact with the surface of the annular filter.

[0010] Furthermore, a guide groove is provided on the inner side of the rotating cylinder, a driving rod is provided at the top end of the lifting rod along its radial direction, and an end of the driving rod away from the lifting rod extends into the guide groove.

[0011] Furthermore, the guide groove includes an upper fold line segment and a lower fold line segment, and a fold line channel for the driving rod to move is formed between the upper fold line segment and the lower fold line segment, the high point of the upper fold line segment is staggered with the high point of the lower fold line segment, and the low point of the upper fold line segment is staggered with the low point of the lower fold line segment.

[0012] Furthermore, the cross-section of the air inlet groove is a right-angled trapezoid, and an auxiliary component for assisting base oil distillation is provided at the bottom of the annular filter. The auxiliary component includes an impeller and a main gear fixedly mounted on the outside of the casing, and the main gear is located at the bottom of the impeller.

[0013] Furthermore, sub gears are meshed on both sides of the main gear, and the bottoms of the sub gears are connected to rotating rods, which are movable through the wall of the movable plate, and the two rotating rods are rotatably installed on the inner wall of the distillation tower through cross bars.

[0014] Furthermore, a stirring blade is fixedly provided on the outer side of the rotating rod, and the stirring blade is generally in a cone shape that is narrow at the top and wide at the bottom.

[0015] In the present invention, the movable plate moves upward under the action of the gas phase generated during the distillation process. When the movable plate moves along its own axis, the self-cleaning component is triggered to automatically clean impurities on the surface of the annular filter, so that the impurities fall on the movable plate for easy collection, reducing the trouble of manual cleaning, realizing online cleaning and ensuring the continuity and efficiency of the base oil refining process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0017] Figure 1 Schematic diagram of the overall structure of an embodiment of the present invention; Figure 2 Schematic diagram of the cross-sectional structure of a distillation tower according to an embodiment of the present invention; Figure 3 This is a schematic structural diagram of an annular filter according to an embodiment of the present invention; Figure 4 This is a schematic structural diagram of an impeller according to an embodiment of the present invention; Figure 5 Schematic diagram of the cross-sectional structure of the fixing plate according to an embodiment of the present invention; Figure 6 For the embodiment of the present invention Figure 5 A schematic diagram of the partially enlarged structure at center A; Figure 7 It is a schematic diagram of the cross-sectional expanded structure of the rotating drum according to an embodiment of the present invention.

[0018] The numbers in the figure represent: 1. Distillation tower; 2. Condenser; 3. Distillation chamber; 4. Annular filter; 5. Moving plate; 6. Self-cleaning component; 61. Fixed plate; 62. Sleeve; 63. Lifting rod; 64. Rotating cylinder; 65. Elastic part; 66. Brush bar; 67. Guide groove; 671. Upper broken line segment; 672. Lower broken line segment; 68. Drive rod; 7. Air inlet groove; 8. Auxiliary component; 81. Impeller; 82. Main gear; 83. Sub-gear; 84. Rotating rod; 85. Cross bar; 86. Stirring blade. DETAILED DESCRIPTION

[0019] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings 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 making any creative efforts shall fall within the scope of protection of the present invention.

[0020] The present invention will be further described below with reference to the embodiments.

[0021] Example 1, reference Figure 1-Figure 7, which is the first embodiment of the present invention, provides a lubricating oil base oil refining device, including a distillation tower 1 and a condenser 2 connected by a pipeline, and a distillation chamber 3 is provided in the distillation tower 1.

[0022] A circular filter is usually installed on the top of the base oil refining distillation tower, which is mainly used to intercept impurities such as mist droplets and solid particles that may be carried during the distillation process in the distillation chamber 3, to prevent them from entering the subsequent condensation system with the gas phase or affecting the product quality. As the working time increases, high-viscosity impurities adhere to the circular filter and are difficult to fall off. Long-term accumulation will form a gel-like blockage, thereby affecting the refining efficiency of the base oil.

[0023] The present invention also includes: an annular filter screen 4, which is fixedly installed on the top of the inner cavity of the distillation tower 1; a movable plate 5, which is linearly slidably installed on the inner wall of the distillation tower 1 and is located between the distillation chamber 3 and the annular filter screen 4, and the diameter of the movable plate 5 is the same as the inner diameter of the distillation tower 1.

[0024] The self-cleaning component 6 is installed between the annular filter 4 and the movable plate 5. When the movable plate 5 moves along its own axis, the self-cleaning component 6 automatically cleans impurities on the surface of the annular filter 4.

[0025] Specifically, the movable plate 5 moves upward under the action of the gas phase generated during the distillation process. When the movable plate 5 moves along its own axis, the self-cleaning component 6 is triggered to automatically clean the impurities on the surface of the annular filter 4, so that the impurities fall on the movable plate 5 for easy collection, reducing the trouble of manual cleaning, realizing online cleaning and ensuring the continuity and efficiency of the base oil refining process.

[0026] Specifically, the self-cleaning component 6 can be a pulse air blowing component, which includes a jet air pipe group fixedly installed on the top of the inner cavity of the distillation tower, located on the top of the annular filter 4, and arranged in a horizontal surrounding manner. The injection angle is 135° with the annular filter 4, generating a tangential impact force; the jet air pipe group is connected to the air pump through a pipeline and a one-way valve, and a sensor is set at the bottom of the jet air pipe group. When the gas phase pressure in the distillation tower pushes the movable plate 5 to rise to a preset position, the sensor sends a start command to the air pump control system, and the jet air pipe group realizes full circumferential coverage of the annular filter 4 and uses the gas phase to remove residual impurities in the annular filter 4.

[0027] Reference Figure 3 The movable plate 5 is made of a high-temperature resistant lightweight material. An air inlet groove 7 is opened on the inner wall of the distillation tower 1, and the air inlet groove 7 is located between the annular filter 4 and the movable plate 5.

[0028] Specifically, at the feed port on one side of the distillation tower 1 ( Figure 2 、 Figure 3(As shown in the figure, but not numbered) after feeding and before distillation starts, the movable plate 5 is at the lowest position due to gravity, and a closed space is formed between the movable plate 5 and the distillation chamber 3; after distillation starts, the base oil in the distillation chamber 3 is heated and vaporized to produce an ascending gas phase, which pushes the movable plate 5 upward until the gas phase can pass through the air inlet groove 7, and then the gas phase is filtered through the annular filter 4.

[0029] Reference Figure 5 and Figure 6 The self-cleaning assembly 6 includes a fixed plate 61 fixedly connected to the inner side of the annular filter 4, a sleeve 62 is rotatably installed at the bottom of the fixed plate 61, a lifting rod 63 is slidably connected to the inner side of the sleeve 62, and the bottom end of the lifting rod 63 is connected to the wall of the movable plate 5, and a rotating cylinder 64 is rotatably installed at the center of the fixed plate 61, and the rotating cylinder 64 is located on the outside of the sleeve 62; an elastic member 65 is connected between the top end of the lifting rod 63 and the inner top wall of the rotating cylinder 64; when the movable plate 5 does not move up, the elastic member 65 is in an initial state.

[0030] Specifically, a gas phase (such as steam) is generated during the distillation process. When the gas phase pushes the movable plate 5 upward (and overcomes the elastic force of the elastic member 65 ), the lifting rod 63 moves synchronously therewith, so that the top end of the lifting rod 63 moves vertically inside the rotating cylinder 64 .

[0031] Specifically, the elastic member 65 is preferably a compression spring or metal spring that can withstand axial pressure; the lifting rod 63 slides upward along the inner wall of the sleeve 62 synchronously with the movable plate 5. At this time, the elastic member 65 is gradually compressed from the initial state, and elastic potential energy is stored between the inner top wall of the rotating cylinder 64 and the top of the lifting rod 63.

[0032] Reference Figure 5 、 Figure 6 and Figure 7 The bottom of the rotating cylinder 64 is connected by a connecting rod ( Figure 5 The brush strips 66 are symmetrically installed on the inner side of the rotating cylinder 64, and the connecting rod is in an inverted "L" shape as a whole. The brush surface of the brush strip 66 contacts the surface of the annular filter 4; a guide groove 67 is provided on the inner side of the rotating cylinder 64, and a driving rod 68 is provided at the top end of the lifting rod 63 along its radial direction, and the driving rod 68 extends into the guide groove 67 away from the end of the lifting rod 63; the guide groove 67 includes an upper fold line segment 671 and a lower fold line segment 672, and a fold line channel for the driving rod 68 to move is formed between the upper fold line segment 671 and the lower fold line segment 672, the high point of the upper fold line segment 671 is staggered with the high point of the lower fold line segment 672, and the low point of the upper fold line segment 671 is staggered with the low point of the lower fold line segment 672.

[0033] Specifically, since the driving rod 68 is embedded in the guide groove 67 on the inner side of the rotating cylinder 64, and the high points and low points of the upper fold line segment 671 and the lower fold line segment 672 are staggered, the vertical movement of the driving rod 68 driven by the lifting rod 63 will force the driving rod 68 to squeeze the inner wall of the guide groove 67, thereby driving the rotating cylinder 64 to produce intermittent rotation. In this way, the brush strip 66 gradually covers different areas of the annular filter 4 as the rotating cylinder 64 rotates, thereby achieving circular brushing of impurities on the surface of the annular filter 4.

[0034] Example 2, reference Figure 1-Figure 7 , which is the second embodiment of the present invention. This embodiment differs from the first embodiment in that the cross-section of the air inlet groove 7 is a right-angled trapezoid, and an auxiliary component 8 for assisting base oil distillation is installed at the bottom of the annular filter 4. The auxiliary component 8 includes an impeller 81 fixedly mounted on the outside of the sleeve 62 and a main gear 82, and the main gear 82 is located at the bottom of the impeller 81.

[0035] Reference Figure 3 , sub gears 83 are meshed on both sides of the main gear 82, and the bottoms of the sub gears 83 are connected to rotating rods 84, which are movable through the wall of the movable plate 5, and the two rotating rods 84 are rotatably mounted on the inner wall of the distillation tower 1 through a cross bar 85.

[0036] Specifically, the base oil is heated and vaporized, and the gas phase impacts the impeller 81 after passing through the air inlet groove 7, causing the impeller 81 and the sleeve 62 to rotate, thereby causing the main gear 82 to drive the sub-gears 83 on both sides to rotate, and then the two rotating rods 84 to rotate along their own axes to stir the material at the bottom.

[0037] Reference Figure 2 A stirring blade 86 is fixedly mounted on the outer side of the rotating rod 84, and the stirring blade 86 is generally tapered with a narrow top and a wide bottom.

[0038] Specifically, the upper blades of the stirring blades 86 generate radial flow, breaking up the foam layer on the liquid surface and increasing the vaporization area; the lower blades of the stirring blades 86 form axial flow, promoting the circulation of the base oil material at the bottom of the tower and preventing local overheating and coking. The remaining structure is the same as that of Example 1.

[0039] Based on Examples 1-2, the working principle of the present invention is as follows: The gas phase generated during distillation in the distillation chamber 3 pushes the movable plate 5 upward, causing the top end of the lifting rod 63 to move inside the rotating cylinder 64, forcing the driving rod 68 to squeeze the inner wall of the guide groove 67. In this way, the rotating cylinder 64 rotates, driving the brush bar 66 to clean the impurities on the surface of the annular filter 4; at the same time, the gas phase is accelerated after passing through the air inlet groove 7 to impact the impeller 81, driving the main gear 82 to drive the sub-gear 83 and the rotating rod 84 to rotate, so that the stirring blade 86 generates radial flow to break the foam layer of the material and axial flow to promote circulation, which not only improves the vaporization efficiency but also prevents coking, solves the problems of filter blockage and low distillation efficiency in traditional devices, and significantly improves the continuity of base oil refining and product quality.

[0040] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A lubricating oil base oil refining device, comprising a distillation tower (1) and a condenser (2) connected by a pipeline, wherein a distillation chamber (3) is provided in the distillation tower (1), characterized in that: Also includes: An annular filter screen (4), wherein the annular filter screen (4) is fixedly arranged at the top of the inner cavity of the distillation tower (1); a movable plate (5), the movable plate (5) being linearly slidably arranged on the inner wall of the distillation tower (1) and being located between the distillation chamber (3) and the annular filter screen (4), the diameter of the movable plate (5) being the same as the inner diameter of the distillation tower (1); A self-cleaning component (6) is provided between the annular filter (4) and the movable plate (5); when the movable plate (5) moves along its own axis, the self-cleaning component (6) automatically cleans impurities on the surface of the annular filter (4).

2. The lubricating oil base oil refining device according to claim 1, characterized in that: The movable plate (5) is made of a high-temperature resistant lightweight material. An air inlet groove (7) is provided on the inner wall of the distillation tower (1), and the air inlet groove (7) is located between the annular filter (4) and the movable plate (5).

3. The lubricating oil base oil refining device according to claim 2, characterized in that: The self-cleaning assembly (6) comprises a fixed plate (61) fixedly arranged on the inner side of the annular filter (4); a sleeve (62) is rotatably arranged at the bottom of the fixed plate (61); a lifting rod (63) is slidably arranged on the inner side of the sleeve (62); and the bottom end of the lifting rod (63) is connected to the wall of the movable plate (5); a rotating cylinder (64) is rotatably arranged at the center of the fixed plate (61), and the rotating cylinder (64) is located on the outer side of the sleeve (62).

4. The lubricating oil base oil refining device according to claim 3, characterized in that: An elastic member (65) is connected between the top end of the lifting rod (63) and the inner top wall of the rotating cylinder (64); when the movable plate (5) does not move upward, the elastic member (65) is in an initial state.

5. The lubricating oil base oil refining device according to claim 3 or 4, characterized in that: The bottom of the rotating cylinder (64) is symmetrically provided with brush strips (66) via a connecting rod, and the connecting rod is in an inverted "L" shape as a whole. The brush surface of the brush strips (66) contacts the surface of the annular filter (4).

6. The lubricating oil base oil refining device according to claim 5, characterized in that: A guide groove (67) is provided on the inner side of the rotating cylinder (64), and a driving rod (68) is provided at the top end of the lifting rod (63) along its radial direction, and the driving rod (68) extends from one end of the lifting rod (63) into the guide groove (67).

7. The lubricating oil base oil refining device according to claim 6, characterized in that: The guide groove (67) includes an upper fold line segment (671) and a lower fold line segment (672), wherein a fold line channel for the driving rod (68) to move is formed between the upper fold line segment (671) and the lower fold line segment (672), wherein the high point of the upper fold line segment (671) is staggered with the high point of the lower fold line segment (672), and the low point of the upper fold line segment (671) is staggered with the low point of the lower fold line segment (672).

8. The lubricating oil base oil refining device according to claim 3, characterized in that: The cross section of the air inlet groove (7) is a right-angled trapezoid. An auxiliary component (8) for assisting base oil distillation is provided at the bottom of the annular filter (4). The auxiliary component (8) includes an impeller (81) fixedly sleeved on the outside of the sleeve (62) and a main gear (82), and the main gear (82) is located at the bottom of the impeller (81).

9. The lubricating oil base oil refining device according to claim 8, characterized in that: Sub-gears (83) are meshed on both sides of the main gear (82), and the bottoms of the sub-gears (83) are connected to rotating rods (84). The rotating rods (84) are movable through the wall of the movable plate (5), and the two rotating rods (84) are rotatably mounted on the inner wall of the distillation tower (1) through a cross bar (85).

10. The lubricating oil base oil refining device according to claim 9, characterized in that: A stirring blade (86) is fixedly provided on the outer side of the rotating rod (84), and the stirring blade (86) is generally tapered, narrow at the top and wide at the bottom.

Images