Lubricating oil production device with bubble elimination function

Abstract

The utility model discloses a lubricating oil production device with bubble elimination, which relates to the technical field of lubricating oil production and comprises a shell, a defoaming chamber is movably connected in the shell, an oil inlet is formed in the center of the top of the defoaming chamber, a first defoaming filter screen is fixedly connected to the inner wall of the top end of the defoaming chamber, and a second defoaming filter screen is fixedly connected to the inner wall of the top end of the defoaming chamber. A second defoaming filter screen is arranged at the bottom of the first defoaming filter screen, an oil leakage pipe is fixedly connected to the bottom end of the defoaming chamber, an arc-shaped block is fixedly connected to the inner wall of the bottom end of the oil leakage pipe, a wrapping ring is arranged under the arc-shaped block, and a lower oil filter plate is fixedly connected to the bottom end of the wrapping ring; according to the defoaming device, the cam rotates to jack up the arc-shaped block to generate vibration, the vibration is transmitted to the defoaming chamber, the driving motor controls the linkage rod to drive the cam, and the vibration is transmitted in the defoaming chamber, so that lubricating oil begins to be defoamed before entering a filter screen, and the burden of subsequent filtering work is relieved.

Description

Technical Field

[0001] This utility model relates to the field of lubricating oil production technology, specifically a lubricating oil production device with bubble elimination function. Background Technology

[0002] Lubricating oil production includes steps such as raw material mixing, heating, reaction, cooling, and filtration. In this process, the raw materials undergo chemical reactions in one or more reactors to produce base oil, which is then cooled by a cooling system and finally filtered to remove impurities, resulting in the finished lubricating oil. During the heating and reaction stages of lubricating oil production, a large number of bubbles are generated due to the increase in temperature and chemical changes. If these bubbles are not effectively eliminated, they will directly affect the quality of the lubricating oil. The presence of bubbles will lead to a decrease in the oxidative stability of the lubricating oil, accelerate oil aging, and also affect lubrication performance.

[0003] In the production process of lubricating oil, the presence of air bubbles can have many adverse effects on product quality and production process. Lubricating oil is widely used in mechanical equipment such as automobile engines and industrial gearboxes. Its quality is directly related to the operating efficiency and life of the equipment. Air bubbles will cause the lubricating performance of the lubricating oil to decline, and it will be impossible to form a good oil film during equipment operation, which will increase the friction and wear between components. In order to address the above problems, a lubricating oil production device with air bubble elimination is proposed. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a lubricating oil production device with bubble elimination function.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a lubricating oil production device with bubble elimination function, comprising a shell, an internally connected defoaming chamber, an oil inlet at the center of the top of the defoaming chamber, a first defoaming filter fixedly connected to the inner wall of the top of the defoaming chamber, a second defoaming filter at the bottom of the first defoaming filter, and the second defoaming filter fixed to the bottom of the first defoaming filter via the defoaming chamber, an oil drain pipe fixedly connected to the bottom of the defoaming chamber, and the bottom of the defoaming chamber... A defoaming plate is fixedly connected to the inner wall of the end, and the defoaming plate is fixed between the defoaming chamber and the oil leakage pipe. An arc-shaped block is fixedly connected to the inner wall of the bottom end of the oil leakage pipe. A covering ring is provided directly below the arc-shaped block. A lower oil filter plate is fixedly connected to the bottom end of the covering ring. A bracket is fixedly connected to the top center of the lower oil filter plate. The bracket is located inside the covering ring. A drive motor is fixedly connected to one side of the bracket. A connecting rod is movably connected to the outer surface of one end of the drive motor. A cam is fixedly connected to the outer surface of the connecting rod.

[0006] As described above, the vertical center lines of the first defoaming filter, the second defoaming filter, and the defoaming plate coincide with each other, the oil leakage pipe is set in an inverted cone shape, and the surface of the oil leakage pipe is provided with several small holes.

[0007] As described above, the covering ring is located at the top center of the lower oil filter plate, the lower oil filter plate is fixed to the bottom inner wall of the housing, the bottom end of the arc-shaped block is tightly fitted with the top end of the covering ring, and the covering ring is located directly below the arc-shaped block through the lower oil filter plate.

[0008] As described above, the cam is made of soft rubber. The highest point of the cam is higher than the top of the covering ring and the bottom of the arc block. The cam forms a rotating structure with the arc block through the cooperation of the connecting rod and the drive motor. One end of the drive motor passes through the top of the bracket and is rotatably connected to the connecting rod.

[0009] As described above, a connecting block is fixedly connected to the outer surface of the defoaming chamber, and a movable groove is opened on the outer surface of the connecting block. The movable groove is opened on the inner wall of the outer shell. A slider is fixedly connected to the bottom outer surface of the connecting block, and a telescopic spring is fixedly connected to the bottom inner surface of the slider. A hollow column is fixedly connected to the bottom of the telescopic spring, and a buffer seat is fixedly connected to the bottom outer wall of the hollow column.

[0010] As described above, the connecting block is slidably connected to the inner wall of the movable groove, and the defoaming chamber forms a sliding structure with the outer shell through the cooperation of the connecting block and the movable groove. The outer surface of the connecting block is tightly fitted with the inner surface of the movable groove.

[0011] As described above, the telescopic spring is fixed between the slider and the hollow column, the top of the telescopic spring is higher than the top of the telescopic spring, and the bottom inner wall of the slider covers the top outer wall of the hollow column.

[0012] As described above, a fixing tube is fixedly connected to the top center of the second defoaming filter. The fixing tube is fixed between the first defoaming filter and the second defoaming filter, and the fixing tube is hollow. A small motor is fixedly connected inside the fixing tube. A bearing is movably connected to the bottom outer wall of the small motor, and a scraper is fixedly connected to the outer surface of the bearing.

[0013] As described above, the small motor passes through the second defoaming filter and is rotatably connected to the bearing. The scraper is distributed in a ring around the outer surface of the bearing, and the top outer wall of the scraper is in close contact with the bottom outer wall of the second defoaming filter.

[0014] Compared with existing technologies, this lubricating oil production apparatus with bubble elimination function has the following advantages:

[0015] I. This utility model uses a rotating cam to lift an arc-shaped block, generating vibration that is transmitted to the defoaming chamber. A drive motor controls a linkage rod to drive the cam. The vibration is transmitted within the defoaming chamber, causing the lubricating oil to begin defoaming before entering the filter screen, reducing the burden on subsequent filtration. The layered design of the first and second defoaming filters enables graded treatment of bubbles. During the flow of lubricating oil, the first filter screen intercepts and breaks larger bubbles, while the second filter screen further processes smaller bubbles, improving the overall bubble removal rate. Under vibration, bubbles on the filter screen surface and inside are more easily broken due to vibration and the flow of lubricating oil, improving defoaming quality and reducing the residence time of lubricating oil during production.

[0016] II. This utility model uses a connecting block, a movable groove, a slider, a telescopic spring, and a hollow column to form a buffer structure. The telescopic spring buffers the movement of the defoaming chamber by extending and contracting between the slider and the hollow column. When the cam lifts the arc-shaped block and causes the defoaming chamber to move upward, the telescopic spring is stretched and absorbs the upward vibration force. When the cam stops working, the defoaming chamber moves downward under the force of gravity and the spring's restoring force, and the spring is compressed back to its original length, ensuring the stable lifting and lowering of the defoaming chamber under the periodic movement of the cam.

[0017] Other advantages, objectives and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or will be taught from the practice of this invention. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the lubricating oil production device with bubble elimination according to this utility model.

[0019] Figure 2 This is a schematic diagram showing the detailed structure of the cam in the lubricating oil production device with bubble elimination according to this utility model.

[0020] Figure 3 This is a cross-sectional view of the outer casing of the lubricating oil production device with bubble elimination according to this utility model.

[0021] Figure 4 This is a schematic diagram of the internal structure of the movable tank of the lubricating oil production device with bubble elimination according to this utility model.

[0022] In the diagram: 1. Outer shell; 101. Defoaming chamber; 102. Oil inlet; 2. First defoaming filter; 201. Second defoaming filter; 202. Oil leakage pipe; 203. Defoaming plate; 204. Arc-shaped block; 205. Covering ring; 206. Lower oil filter plate; 207. Support; 208. Drive motor; 209. Linking rod; 210. Cam; 3. Connecting block; 301. Movable groove; 302. Slider; 303. Telescopic spring; 304. Hollow column; 305. Buffer seat; 4. Fixed pipe; 401. Small motor; 402. Bearing; 403. Scraper. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] like Figure 1-4As shown, this utility model provides a technical solution: a lubricating oil production device with bubble elimination function, including a shell 1, a defoaming chamber 101 movably connected inside the shell 1, an oil inlet 102 opened at the center of the top of the defoaming chamber 101, a first defoaming filter 2 fixedly connected to the inner wall of the top of the defoaming chamber 101, a second defoaming filter 201 provided at the bottom of the first defoaming filter 2, and the second defoaming filter 201 fixed to the bottom of the first defoaming filter 2 through the defoaming chamber 101, and the bottom end of the defoaming chamber 101... An oil leak pipe 202 is fixedly connected. A defoaming plate 203 is fixedly connected to the inner wall of the bottom end of the defoaming chamber 101. The defoaming plate 203 is fixed between the defoaming chamber 101 and the oil leak pipe 202. An arc-shaped block 204 is fixedly connected to the inner wall of the bottom end of the oil leak pipe 202. A covering ring 205 is provided directly below the arc-shaped block 204. A lower oil filter plate 206 is fixedly connected to the bottom end of the covering ring 205. A bracket 207 is fixedly connected to the top center of the lower oil filter plate 206. The bracket 207 is located inside the covering ring 205. A drive motor 208 is fixedly connected to one side of the 07. A connecting rod 209 is movably connected to the outer surface of one end of the drive motor 208. A cam 210 is fixedly connected to the outer surface of the connecting rod 209. A connecting block 3 is fixedly connected to the outer surface of the defoaming chamber 101. A movable groove 301 is opened on the outer surface of the connecting block 3. The movable groove 301 is opened on the inner wall of the outer shell 1. A slider 302 is fixedly connected to the outer surface of the bottom end of the connecting block 3. A telescopic spring 303 is fixedly connected to the inner surface of the bottom end of the slider 302. A hollow column 304 is fixedly connected to the bottom of the 03. A buffer seat 305 is fixedly connected to the outer wall of the bottom end of the hollow column 304. A fixing tube 4 is fixedly connected to the center of the top of the second defoaming filter 201. The fixing tube 4 is fixed between the first defoaming filter 2 and the second defoaming filter 201. The fixing tube 4 is hollow. A small motor 401 is fixedly connected inside the fixing tube 4. A bearing 402 is movably connected to the outer wall of the bottom end of the small motor 401. A scraper 403 is fixedly connected to the outer surface of the bearing 402.

[0025] According to the overall structure of the device, lubricating oil first enters the defoaming chamber 101 through the oil inlet 102. At this time, the drive motor 208 is started, which drives the connecting rod 209 to rotate. The connecting rod 209 drives the cam 210 to rotate. When the cam 210 rotates, it periodically pushes the arc-shaped block 204 upward, causing the arc-shaped block 204 to vibrate. The arc-shaped block 204 transmits the vibration to the defoaming chamber 101, causing the air bubbles in the lubricating oil in the defoaming chamber 101 to break under the action of vibration. The defoaming chamber 101 is in its initial position through the connecting block 3 and the movable groove 301 on the inner wall of the outer shell 1. When the cam 210 pushes upward... When the arc-shaped block 204 is raised, it causes the defoaming chamber 101 to generate an upward vibration force. At this time, the connecting block 3 slides upward in the movable groove 301, and the slider 302 at the bottom of the connecting block 3 also moves upward. When the slider 302 moves upward, it stretches the telescopic spring 303 between itself and the hollow column 304. When the protruding part of the cam 210 leaves the arc-shaped block 204, under the action of gravity and the restoring force of the telescopic spring 303, the defoaming chamber 101 begins to move downward. The connecting block 3 slides downward in the movable groove 301, and the telescopic spring 303 is compressed to its original length. The telescopic buffer defoaming chamber 101 of part 3 moves up and down, while the lubricating oil flows to the bottom under gravity. The first defoaming filter 2 initially intercepts and breaks up the air bubbles in the lubricating oil. The second defoaming filter 201 further filters and breaks up the air bubbles in the lubricating oil. Then, the defoaming plate 203 further buffers and disperses the flow of lubricating oil. The lubricating oil treated by the defoaming plate 203 flows through the oil drain pipe 202. The lubricating oil seeps out from the small holes on the surface of the oil drain pipe 202 and flows to the lower oil filter plate 206. The lower oil filter plate 206 performs a final filtration of the lubricating oil to remove residue. The tiny air bubbles ensure the quality of the final flowing lubricating oil. After passing through the lower oil filter plate 206, the lubricating oil completes the defoaming process. The staff collects the defoamed lubricating oil at the bottom and sends it to the subsequent production process or storage stage. Finally, after the lubricating oil stops entering the defoaming chamber 101, the cleaning work is started. The small motor 401 drives the bearing 402 to rotate, and the rotation of the bearing 402 drives the scraper 403 to rotate together. During the rotation, the scraper 403 scrapes off the lubricating oil remaining at the bottom of the second defoaming filter 201, realizing targeted cleaning of the bottom of the second defoaming filter 201.

[0026] like Figure 1-4As shown, the vertical center lines between the first defoaming filter 2, the second defoaming filter 201, and the defoaming plate 203 coincide. The oil leakage pipe 202 is set in an inverted cone shape, and several small holes are opened on the surface of the oil leakage pipe 202. The covering ring 205 is set at the top center of the lower oil filter plate 206. The lower oil filter plate 206 is fixed to the bottom inner wall of the outer shell 1. The bottom end of the arc block 204 is tightly fitted with the top end of the covering ring 205. The covering ring 205 is set directly below the arc block 204 through the lower oil filter plate 206. The cam 210 is made of soft rubber. The highest point of the cam 210 is higher than the top of the covering ring 205 and the bottom of the arc block 204. The cam 210 forms a rotating structure with the arc block 204 through the cooperation of the connecting rod 209 and the drive motor 208. One end of the drive motor 208 passes through the top of the bracket 207 and is rotatably connected to the connecting rod 209.

[0027] The drive motor 208 drives the connecting rod 209 to rotate, which in turn drives the cam 210 to rotate. As the cam 210 rotates, it periodically pushes the arc-shaped block 204 upwards, causing it to vibrate. This vibration is transmitted to the defoaming chamber 101, causing the air bubbles in the lubricating oil to burst under the vibration. The lubricating oil then flows downwards under gravity. The first defoaming filter 2 initially intercepts and breaks up the air bubbles in the lubricating oil. The lubricating oil, after being processed by the first defoaming filter 2, continues to flow downwards to the second defoaming filter 201. 01 Further filtering and breaking of air bubbles in the lubricating oil, defoaming plate 203 further buffers and disperses the flow of lubricating oil. After being treated by defoaming plate 203, the lubricating oil seeps out from the small holes on the surface of oil drain pipe 202 and flows to lower oil filter plate 206. Lower oil filter plate 206 performs a final filtration of the lubricating oil to remove residual micro air bubbles and ensure the quality of the final flowing lubricating oil. After passing through lower oil filter plate 206, the defoaming process is completed. Workers collect the defoamed lubricating oil at the bottom and it enters the subsequent production process or storage stage.

[0028] like Figure 1-4 As shown, the connecting block 3 is slidably connected to the inner wall of the movable groove 301. The defoaming chamber 101 forms a sliding structure with the outer shell 1 through the cooperation of the connecting block 3 and the movable groove 301. The outer surface of the connecting block 3 is tightly attached to the inner surface of the movable groove 301. The telescopic spring 303 is fixed between the slider 302 and the hollow column 304. The top of the telescopic spring 303 is higher than the top of the telescopic spring 304. The bottom inner wall of the slider 302 covers the top outer wall of the hollow column 304.

[0029] The cam 210 lifts the arc-shaped block 204, causing the defoaming chamber 101 to vibrate upwards. At this time, the connecting block 3 slides upwards in the movable groove 301, and the slider 302 at the bottom of the connecting block 3 also moves upwards. When the slider 302 moves upwards, it stretches the telescopic spring 303 between itself and the hollow column 304. When the protruding part of the cam 210 leaves the arc-shaped block 204, under the action of gravity and the restoring force of the telescopic spring 303, the defoaming chamber 101 begins to move downwards. The connecting block 3 slides downwards in the movable groove 301, and the telescopic spring 303 is compressed to its original length. The telescopic spring 303 buffers the lifting and lowering movement of the defoaming chamber 101, preventing it from shaking violently due to the lifting action of the cam 210, thus facilitating the defoaming process of the lubricating oil.

[0030] like Figure 1-4 As shown, a small motor 401 is rotatably connected to the bearing 402 through the second defoaming filter 201. The scraper 403 is distributed in a ring around the outer surface of the bearing 402, and the top outer wall of the scraper 403 is tightly attached to the bottom outer wall of the second defoaming filter 201.

[0031] The small motor 401 drives the bearing 402 to rotate, and the rotation of the bearing 402 drives the scraper 403 to rotate together. During the rotation, the scraper 403 scrapes off the lubricating oil remaining at the bottom of the second defoaming filter 201, thus achieving targeted cleaning of the bottom of the second defoaming filter 201.

[0032] Working principle: When the device is in use, the lubricating oil first enters the defoaming chamber 101 through the oil inlet 102. At this time, the drive motor 208 is started, which drives the connecting rod 209 to rotate. The connecting rod 209 drives the cam 210 to rotate. When the cam 210 rotates, it periodically pushes the arc-shaped block 204 upward, causing the arc-shaped block 204 to vibrate. The arc-shaped block 204 transmits the vibration to the defoaming chamber 101, causing the air bubbles in the lubricating oil in the defoaming chamber 101 to break under the action of vibration. The lubricating oil flows to the bottom under the action of gravity. The first defoaming filter 2 initially intercepts and breaks the air bubbles in the lubricating oil. When the lubricating oil passes through the filter screen, some larger air bubbles are blocked and broken by the filter screen surface, achieving the initial removal of air bubbles. The lubricating oil after being treated by the first defoaming filter 2... The lubricating oil continues to flow downwards to the second defoaming filter 201, which further filters and breaks up the air bubbles in the lubricating oil. After being processed by the two filters, the lubricating oil flows onto the defoaming plate 203, which further buffers and disperses the flow of the lubricating oil. After being processed by the defoaming plate 203, the lubricating oil flows through the oil drain pipe 202 and seeps out from the small holes on the surface of the oil drain pipe 202 to the lower oil filter plate 206. The lower oil filter plate 206 performs a final filtration of the lubricating oil to remove residual micro air bubbles and ensure the quality of the final lubricating oil. After passing through the lower oil filter plate 206, the lubricating oil completes the defoaming process. The workers collect the defoamed lubricating oil at the bottom and it enters the subsequent production process or storage stage.

[0033] When lubricating oil enters the defoaming chamber 101 through the oil inlet 102, the defoaming chamber 101 is initially positioned by engaging the movable groove 301 on the inner wall of the outer shell 1 with the connecting block 3. When the cam 210 pushes up the arc-shaped block 204, the defoaming chamber 101 generates an upward vibration force. At this time, the connecting block 3 slides upward in the movable groove 301, and the slider 302 at the bottom of the connecting block 3 also moves upward. When the slider 302 moves upward, it stretches the telescopic spring 303 between itself and the hollow column 304. When the protruding part of the cam 210 leaves the arc-shaped block 204, under the action of gravity and the restoring force of the telescopic spring 303, the defoaming chamber 101 begins to move downward. The connecting block 3 slides downward in the movable groove 301, and the telescopic spring 303 is compressed to its original length. The telescopic spring 303 buffers the lifting and lowering movement of the defoaming chamber 101, preventing it from shaking violently due to the pushing action of the cam 210, thus facilitating the completion of the defoaming process of the lubricating oil.

[0034] Finally, after the lubricating oil stops entering the defoaming chamber 101, the cleaning process begins. At this time, the defoaming chamber 101 is in a static state, and some lubricating oil remains at the bottom of the second defoaming filter 201. The small motor 401 drives the bearing 402 to rotate, and the rotation of the bearing 402 drives the scraper 403 to rotate as well. During the rotation, the scraper 403 scrapes off the lubricating oil remaining at the bottom of the second defoaming filter 201, thus achieving targeted cleaning of the bottom of the second defoaming filter 201 and avoiding the waste caused by lubricating oil residue at the filter.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A lubricating oil production apparatus with bubble elimination function, comprising a housing (1), characterized in that: An antifoaming chamber (101) is movably connected inside the outer shell (1). An oil inlet (102) is provided at the center of the top of the antifoaming chamber (101). A first antifoaming filter (2) is fixedly connected to the inner wall of the top of the antifoaming chamber (101). A second antifoaming filter (201) is provided at the bottom of the first antifoaming filter (2), and the second antifoaming filter (201) is fixed to the bottom of the first antifoaming filter (2) through the antifoaming chamber (101). An oil leakage pipe (202) is fixedly connected to the bottom end of the antifoaming chamber (101). An antifoaming plate (203) is fixedly connected to the inner wall of the bottom end of the antifoaming chamber (101). The antifoaming plate (203) is fixed to the antifoaming chamber (101) and the oil leakage pipe. Between the pipes (202), an arc-shaped block (204) is fixedly connected to the inner wall of the bottom end of the oil leakage pipe (202). A covering ring (205) is provided directly below the arc-shaped block (204). A lower oil filter plate (206) is fixedly connected to the bottom end of the covering ring (205). A bracket (207) is fixedly connected to the top center of the lower oil filter plate (206). The bracket (207) is located inside the covering ring (205). A drive motor (208) is fixedly connected to one side of the bracket (207). A connecting rod (209) is movably connected to the outer surface of one end of the drive motor (208). A cam (210) is fixedly connected to the outer surface of the connecting rod (209).

2. The lubricating oil production apparatus with bubble elimination according to claim 1, characterized in that: The vertical center lines between the first defoaming filter (2), the second defoaming filter (201), and the defoaming plate (203) coincide with each other. The oil leakage pipe (202) is set in an inverted cone shape, and several small holes are opened on the surface of the oil leakage pipe (202).

3. The lubricating oil production apparatus with bubble elimination according to claim 1, characterized in that: The covering ring (205) is located at the top center of the lower oil filter plate (206), the lower oil filter plate (206) is fixed to the bottom inner wall of the outer shell (1), the bottom end of the arc block (204) is tightly fitted with the top end of the covering ring (205), and the covering ring (205) is located directly below the arc block (204) through the lower oil filter plate (206).

4. The lubricating oil production apparatus with bubble elimination according to claim 1, characterized in that: The cam (210) is made of soft rubber. The highest point of the cam (210) is higher than the top of the covering ring (205) and the bottom of the arc block (204). The cam (210) and the arc block (204) form a rotating structure through the cooperation of the connecting rod (209) and the drive motor (208). One end of the drive motor (208) passes through the top of the bracket (207) and is rotatably connected to the connecting rod (209).

5. The lubricating oil production apparatus with bubble elimination according to claim 1, characterized in that: A connecting block (3) is fixedly connected to the outer surface of the defoaming chamber (101). A movable groove (301) is opened on the outer surface of the connecting block (3). The movable groove (301) is opened on the inner wall of the outer shell (1). A slider (302) is fixedly connected to the bottom outer surface of the connecting block (3). A telescopic spring (303) is fixedly connected to the bottom inner surface of the slider (302). A hollow column (304) is fixedly connected to the bottom of the telescopic spring (303). A buffer seat (305) is fixedly connected to the bottom outer wall of the hollow column (304).

6. A lubricating oil production apparatus with bubble elimination according to claim 5, characterized in that: The connecting block (3) is slidably connected to the inner wall of the movable groove (301). The defoaming chamber (101) forms a sliding structure with the outer shell (1) through the cooperation of the connecting block (3) and the movable groove (301). The outer surface of the connecting block (3) is closely fitted with the inner surface of the movable groove (301).

7. A lubricating oil production apparatus with bubble elimination according to claim 5, characterized in that: The telescopic spring (303) is fixed between the slider (302) and the hollow column (304). The top of the telescopic spring (303) is higher than the top of the telescopic spring (304). The bottom inner wall of the slider (302) covers the top outer wall of the hollow column (304).

8. A lubricating oil production apparatus with bubble elimination according to claim 1, characterized in that: A fixing tube (4) is fixedly connected to the top center of the second defoaming filter (201). The fixing tube (4) is fixed between the first defoaming filter (2) and the second defoaming filter (201). The fixing tube (4) is hollow. A small motor (401) is fixedly connected inside the fixing tube (4). A bearing (402) is movably connected to the bottom outer wall of the small motor (401). A scraper (403) is fixedly connected to the outer surface of the bearing (402).

9. A lubricating oil production apparatus with bubble elimination according to claim 8, characterized in that: The small motor (401) passes through the second defoaming filter (201) and is rotatably connected to the bearing (402). The scraper (403) is distributed in a ring around the outer surface of the bearing (402). The top outer wall of the scraper (403) is tightly attached to the bottom outer wall of the second defoaming filter (201).

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