Device and method for extracting, filtering and separating organic silicone oil

Abstract

The invention relates to the technical field of filtering and separating, and discloses an organic silicone oil extracting, filtering and separating device and method.The organic silicone oil extracting, filtering and separating device comprises a filtering tank, a front end plate and a rear end plate, the front end plate and the rear end plate are installed at the two ends of the filtering tank, and a cooling shaft penetrating through the inside and the outside is arranged in the center of the front end plate and rotationally connected with the center of the front end plate; a filter element is installed at one end of the cooling shaft through a bolt, a discharging pipe penetrating through the interior and the exterior is arranged in the center of the rear end plate, and the discharging pipe is rotationally connected with the center of the rear end plate. The discharging pipe is driven by the motor to rotate to drive the filter element to rotate, and impurities attached to the surface of the filter element can be removed through friction. Meanwhile, a mesh screen of the cleaning mechanism can be driven by rotation of the discharging pipe to reciprocate, impurities around the filter element are cleaned and moved to the two ends of the filtering tank, the filter element is effectively prevented from being blocked by accumulation of the impurities, and it is guaranteed that the filtering process is continuously and efficiently carried out.

Description

Technical Field

[0001] The invention relates to the technical field of filtration and separation, and in particular to a device and method for extracting, filtration and separating organic silicone oil. Background Art

[0002] In the chemical industry, silicone oil is an important chemical product widely used in many industries. However, in the production process of silicone oil, there will be some solid impurities, such as unreacted raw materials, catalyst residues, solid particles formed by reaction byproducts, etc. If these impurities are not removed, they will affect the purity and quality of silicone oil, and then have an adverse effect on its performance.

[0003] In the production process of silicone oil, the extraction, filtration and separation process faces many challenges. Traditional silicone oil filtration and separation devices are often simple in structure and single in function. Since silicone oil itself has a high viscosity, its fluidity is poor during the filtration process and it is easy to adhere to the surface of the filter medium, resulting in a rapid increase in filtration resistance and a significant decrease in filtration rate. This not only seriously affects production efficiency, but also increases production costs because it takes more time and energy to complete the filtration operation.

[0004] To this end, the present invention provides an organic silicone oil extraction, filtration and separation device and method. Summary of the invention

[0005] In view of the above-mentioned deficiencies in the prior art, the present invention provides an organic silicone oil extraction, filtration and separation device and method, which can effectively solve the problem of organic silicone oil viscosity and improve filtration efficiency and product quality.

[0006] The present invention provides the following technical solutions: an organic silicone oil extraction, filtration and separation device, comprising a filter tank and a front end plate and a rear end plate installed at both ends of the filter tank, a cooling shaft penetrating inside and outside is provided at the center of the front end plate, and the cooling shaft is rotatably connected to the center of the front end plate, a filter element is installed at one end of the cooling shaft by bolts, a discharge pipe penetrating inside and outside is provided at the center of the rear end plate, and the discharge pipe is rotatably connected to the center of the rear end plate, one end of the discharge pipe is docked with the filter element, and the discharge pipe is driven by a motor, the filter element rotates to remove surface impurities, and the organic silicone oil entering the filter element is cooled by the cooling shaft, so that the organic silicone oil is discharged through the discharge pipe;

[0007] The filter tank is provided with a cleaning mechanism inside, and the cleaning mechanism is connected to the rear end plate to remove impurities around the filter element. The filter tank is provided with a pneumatic structure inside, and the pressure inside the filter tank is changed by the pneumatic structure to make the silicone oil pass through the filter element quickly.

[0008] The filter tank is provided with a feed port, and a one-way valve A and a one-way valve B are installed on the feed port and the discharge pipe respectively. When the air pressure structure changes the pressure in the filter tank, the one-way valve A is closed under pressure, while the one-way valve B is opened, so that the organic silicone oil passes through the filter element quickly under extrusion and is discharged from the discharge pipe. When the air pressure structure restores the pressure in the filter tank, the one-way valve A is opened, and the one-way valve B is closed, so that the organic silicone oil is sucked in from the feed port.

[0009] Preferably, the cooling shaft includes a shaft body rotatably connected to the front end plate, a drain pipe is provided at the center of the shaft body, and the drain pipe extends from the shaft body away from the front end plate, four groups of water pipes distributed around the drain pipe are provided in the shaft body, a notch is provided on the shaft body located outside the filter tank, and the notch is communicated with the four groups of water pipes, a sealing sleeve with a rotating seal is provided on the notch of the shaft body, and a connecting port is installed on the sealing sleeve, the four groups of water pipes extend from the other end of the shaft body and are connected to a U-shaped heat dissipation pipe, and the other end of the heat dissipation pipe extends into the shaft body and is connected to the drain pipe, a flange plate for connecting to the filter element by bolts is installed on the shaft body, and the heat dissipation pipe is located inside the filter element, and the silicone oil entering the filter element is cooled by the heat dissipation pipe.

[0010] Preferably, the discharge pipe includes a tube body rotatably connected to the rear end plate, a connecting plate is installed at one end of the tube body located inside the filter tank, a plurality of groups of guide pillars are installed on the connecting plate, and corresponding holes are provided on the end face of the filter element, and a microporous tube inserted into the filter element is installed on the end face of the tube body, and the silicone oil entering the filter element is discharged from the tube body through the microporous tube, and the tube body is driven by a motor to drive the filter element to rotate, thereby removing impurities attached to the surface through friction.

[0011] Preferably, the cleaning mechanism includes several groups of repetitive screw rods that pass through the rear end plate and extend to the inside of the filter tank, and the repetitive screw rods are rotatably connected to the rear end plate, a circular ring is provided at the front end of the repetitive screw rods, and the rear end plate is connected to the circular ring by bolts, the repetitive screw rods are rotatably connected to the circular ring, several groups of the repetitive screw rods are provided with movable mesh screens, the filter element is on the inner side of the mesh screen, and small gears are installed on the outer ends of several groups of repetitive screw rods, and large gears that mesh with several groups of small gears are installed on the discharge pipe located on the outer side of the rear end plate, a shield for covering the small gear and the large gear is installed on the rear end plate, and the discharge pipe is led out from the middle of the shield, and the discharge pipe is driven to rotate by a motor, and under the gear transmission, several groups of repetitive screw rods are rotated, and the mesh screen moves back and forth on the repetitive screw rods to clean impurities around the filter element.

[0012] Preferably, the air pressure structure includes a filter tank having a plurality of groups of equally spaced annular grooves formed inside thereof, and an annular airbag is provided in the annular groove, an elastic protective layer is provided on the inner side of the filter tank, a plurality of groups of positioning rings distributed on both sides of the annular airbag are installed on the inner side of the elastic protective layer, and an air port for connecting the annular airbag is provided on the outer side of the filter tank.

[0013] Preferably, a protrusion is provided in the middle of the filter tank, and an annular channel is provided in the protrusion, and several groups of discharge ports for connecting the annular channel are provided on the inner side of the protrusion. The feed port is installed on the protrusion, and silicone oil is introduced into the interior of the filter tank through the several groups of discharge ports connected by the annular channel.

[0014] A method for extracting, filtering and separating organic silicone oil, the specific operation is as follows:

[0015] S1. The silicone oil is introduced into the filter tank, and the discharge pipe is driven by the motor to drive the filter element and the cooling shaft to rotate, and the air pressure structure starts to operate by inflating, squeezing the space in the filter tank, and the B check valve is opened and the A check valve is closed, so that the silicone oil can pass through the filter element by squeezing;

[0016] S2, the silicone oil enters the filter element, contacts the cooling shaft and is cooled, and then the silicone oil is discharged through the discharge pipe, and the cleaning mechanism reciprocates to clean the impurities on the surface of the filter element and moves the impurities to both ends of the filter tank;

[0017] S3. After the air pressure structure returns to normal, the A check valve opens, the B check valve closes, and the air pressure in the filter tank decreases, so that the silicone oil is sucked in from the feed port. This filtration is repeated to separate impurities.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] (1) The discharge pipe is driven by a motor to rotate, which drives the filter element to rotate, and the impurities attached to the surface of the filter element can be removed through friction. At the same time, the screen of the cleaning mechanism can move back and forth under the drive of the discharge pipe, cleaning the impurities around the filter element and moving them to both ends of the filter tank, effectively preventing the accumulation of impurities and blocking the filter element, ensuring the continuous and efficient filtration process;

[0020] (2) The air pressure structure can change the pressure inside the filter tank. When inflated, it squeezes the space inside the tank, allowing the silicone oil to quickly pass through the filter element under the action of pressure difference. Compared with the traditional method of relying only on natural gravity or simple pressure difference filtration, the filtration speed is greatly improved;

[0021] (3) The unique structure of the cooling shaft can cool down the silicone oil entering the filter element. The cooling water flows through the water pipe and heat dissipation pipe of the shaft body, taking away the heat of the silicone oil and preventing the silicone oil from increasing in viscosity due to friction. This further ensures the smooth filtration process and helps maintain the stable performance of the silicone oil.

[0022] (4) The one-way valves installed on the feed port and the discharge pipe can automatically control the flow direction of the silicone oil according to the pressure changes in the filter tank, ensuring that the filtration process is carried out in an orderly manner and preventing backflow and other situations from affecting the filtration effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the present invention;

[0024] Figure 2 For the present invention Figure 1 Schematic diagram of the split structure;

[0025] Figure 3 This is a schematic diagram of the separation structure of the filter element, the cooling shaft and the discharge pipe of the present invention;

[0026] Figure 4 A schematic diagram of the cleaning mechanism of the present invention;

[0027] Figure 5 It is a schematic diagram of the half-section structure of the filter tank of the present invention.

[0028] In the figure: 1. filter tank; 2. front end plate; 3. rear end plate; 4. cooling shaft; 5. filter element; 6. discharge pipe; 7. cleaning mechanism; 8. air pressure structure; 9. feed port; 10. A one-way valve; 11. B one-way valve; 12. protrusion; 41. shaft body; 42. drain pipe; 43. water guide pipe; 44. notch; 45. sealing sleeve; 46. connection port; 47. heat dissipation pipe; 48. flange; 61. pipe body; 62. connecting plate; 63. guide column; 64. microporous tube; 71. reciprocating screw rod; 72. circular ring; 73. mesh screen; 74. large gear; 75. small gear; 76. shield; 81. annular groove; 82. annular air bag; 83. elastic protective layer; 84. positioning ring; 85. air port. DETAILED DESCRIPTION

[0029] In order to make the objectives, technical solutions and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. In order to keep the following description of the embodiments of the present disclosure clear and concise, the present disclosure omits detailed descriptions of known functions and known components to avoid unnecessary confusion of the concepts of the present invention.

[0030] See also Figure 1 and Figure 2, an organic silicone oil extraction, filtration and separation device, mainly composed of a filter tank 1, a front end plate 2, a rear end plate 3, a cooling shaft 4, a filter element 5, a discharge pipe 6, a cleaning mechanism 7, an air pressure structure 8 and related valves and pipelines and other components.

[0031] The front end plate 2 and the rear end plate 3 are respectively installed at the two ends of the filter tank 1 to form a sealed filtering space. A cooling shaft 4 is installed at the center of the front end plate 2, and the cooling shaft 4 is connected to the front end plate 2 through a bearing to achieve a central rotation connection to ensure that the cooling shaft 4 can rotate freely. A discharge pipe 6 is installed at the center of the rear end plate 3, which is also connected to the central rotation of the rear end plate 3. The filter element 5 is installed at one end of the cooling shaft 4 by bolts and is located inside the filter tank 1, and one end of the discharge pipe 6 is connected to the filter element 5. The discharge pipe 6 is driven to rotate by a motor, thereby driving the filter element 5 and the cooling shaft 4 to rotate synchronously.

[0032] See also Figure 3 The cooling shaft 4 includes a shaft body 41, a drain pipe 42 is arranged at the center of the shaft body 41, and the drain pipe 42 extends from the shaft body 41 in a direction away from the front end plate 2. Four groups of water pipes 43 are distributed around the drain pipe 42 inside the shaft body 41. A notch 44 is provided on the shaft body 41 located outside the filter tank 1, and the notch 44 is connected with the four groups of water pipes 43. In order to ensure the sealing performance during the rotation process, a sealing sleeve 45 of a rotary seal is installed at the notch 44 of the shaft body 41, and a connecting port 46 is installed on the sealing sleeve 45 for connecting to a cooling water source.

[0033] Four groups of water pipes 43 extend from the other end of the shaft body 41 and are connected to the U-shaped heat dissipation pipe 47. The other end of the heat dissipation pipe 47 extends into the shaft body 41 and is connected to the drain pipe 42. The four groups of U-shaped heat dissipation pipes 47 are distributed in a ring shape. A flange 48 is also installed on the shaft body 41 and connected to the filter element 5 by bolts, so that the heat dissipation pipe 47 is located inside the filter element 5. During operation, cooling water flows into the water pipe 43 through the connection port 46, and then flows out of the drain pipe 42 after circulating through the heat dissipation pipe 47, thereby cooling the organic silicone oil entering the filter element 5 through the heat dissipation pipe 47, taking away the heat of the organic silicone oil, and preventing the organic silicone oil from increasing in viscosity due to friction heating, thereby further ensuring the smooth filtration process and helping to maintain the stable performance of the organic silicone oil.

[0034] The discharge pipe 6 is composed of a tube body 61 rotatably connected to the rear end plate 3. A connection plate 62 is installed at one end of the tube body 61 located inside the filter tank 1, and a plurality of guide pillars 63 are installed on the connection plate 62. The end surface of the filter element 5 is provided with corresponding holes, and a microporous tube 64 inserted into the filter element 5 is installed on the end surface of the tube body 61. When the motor drives the discharge pipe 6 to rotate, the tube body 61 drives the filter element 5 to rotate together. During the rotation process, impurities attached to the surface of the filter element 5 are removed by friction. At the same time, the organic silicone oil entering the filter element 5 is discharged from the tube body 61 through the microporous tube 64.

[0035] At the same time, after the front end plate 2 is removed, the filter element 5 can be replaced, and then the replaced filter element 5 can be docked with the connecting plate 62 again, which makes it convenient to replace the filter element 5.

[0036] See also Figure 4 The cleaning mechanism 7 is composed of several groups of repetitive screw rods 71 ​​that penetrate the rear end plate 3 and extend to the inside of the filter tank 1. The repetitive screw rods 71 ​​are rotatably connected to the rear end plate 3 through bearings, and a ring 72 is provided at the front end thereof. The rear end plate 3 is connected to the ring 72 through bolts, and the repetitive screw rods 71 ​​are rotatably connected to the ring 72. A movable mesh screen 73 is installed on the several groups of repetitive screw rods 71, and the filter element 5 is located on the inner side of the mesh screen 73. Pinions 75 are installed on the outer ends of the several groups of repetitive screw rods 71, and large gears 74 that mesh with the several groups of pinions 73 are installed on the discharge pipe 6 on the outer side of the rear end plate 3. A shield 76 for shielding the pinion gears 75 and the large gear 74 is also installed on the rear end plate 3, and the discharge pipe 6 is led out from the middle of the shield 76. When the motor drives the discharge pipe 6 to rotate, under the action of the gear transmission, several groups of reciprocating screw rods 71 ​​rotate synchronously, so that the mesh screen 73 reciprocates on the reciprocating screw rods 71, thereby cleaning the impurities around the filter element 5 and moving them to the two ends of the filter tank 1.

[0037] See also Figure 5 The air pressure structure 8 includes a plurality of groups of equally spaced annular grooves 81 opened inside the filter tank 1, and an annular airbag 82 is installed in the annular groove 81. An elastic protective layer 83 is laid on the inner side of the filter tank 1, and a plurality of groups of positioning rings 84 distributed on both sides of the annular airbag 82 are installed on the inner side of the elastic protective layer 83 to fix the position of the annular airbag 82. An air port 85 is provided on the outer side of the filter tank 1 to connect an external air source to inflate or inhale the annular airbag 82. When the annular airbag 82 is inflated, it will squeeze the space inside the filter tank 1 and change the pressure inside the filter tank 1; when the annular airbag 82 is inhaled and restored to its original state, the pressure inside the filter tank 1 returns to normal.

[0038] A protrusion 12 is provided in the middle of the filter tank 1, and an annular channel is provided in the protrusion 12. The feed port 9 is installed on the protrusion 12, and the organic silicone oil is uniformly introduced into the filter tank 1 through a plurality of groups of discharge ports connected by the annular channel. A check valve 10 and a check valve 11 are respectively installed on the feed port 9 and the discharge pipe 6. When the air pressure structure 8 changes the pressure in the filter tank 1, the A check valve 10 is closed under pressure, and the B check valve 11 is opened, so that the organic silicone oil passes through the filter element 5 quickly under extrusion and is discharged from the discharge pipe 6; when the air pressure structure 8 restores the pressure in the filter tank 1, the A check valve 10 is opened, and the B check valve 11 is closed, so that the organic silicone oil is sucked from the feed port 9, and the filtering and separation operation of the organic silicone oil is repeated in this way.

[0039] Specific operating steps of a method for extracting, filtering and separating organic silicone oil:

[0040] (I) Initial stage of filtration

[0041] The organic silicone oil is introduced into the filter tank 1 through the feed port 9. At this time, the motor is started, and the discharge pipe 6 starts to rotate under the drive of the motor, driving the filter element 5 and the cooling shaft 4 to rotate synchronously. At the same time, the air pressure structure 8 starts to operate by inflating through the air port 85, and the annular airbag 82 gradually expands, squeezing the space inside the filter tank 1, so that the pressure inside the filter tank 1 increases. Under the action of pressure, the B check valve 11 opens, the A check valve 10 closes, and the organic silicone oil starts to pass through the filter element 5 under the action of the pressure difference.

[0042] (II) Cooling and discharging stage

[0043] When the organic silicone oil passes through the filter element 5 and enters the interior of the filter element 5, it fully contacts the heat dissipation pipe 47 inside the cooling shaft 4. As the cooling water flows through the heat dissipation pipe 47 to take away the heat, the organic silicone oil is cooled. The cooled organic silicone oil is discharged from the tube body 61 through the microporous tube 64 of the discharge pipe 6. During the discharge process, the cleaning mechanism 7 continues to work. The rotation of the discharge pipe 6 drives the large gear 74 to rotate, and then the small gear 75 drives the reciprocating screw 71 to rotate through the gear meshing transmission. The mesh screen 73 reciprocates on the reciprocating screw 71 to clean the impurities on the surface of the filter element 5 and push them to the two ends of the filter tank 1.

[0044] (III) Pressure recovery and material suction stage

[0045] When the air pressure structure 8 inhales air through the air port 85, the annular airbag 82 contracts and returns to a normal state, and the air pressure in the filter tank 1 decreases. At this time, the A check valve 10 is opened, the B check valve 11 is closed, and the organic silicone oil is sucked into the filter tank 1 from the feed port 9 under the effect of the difference between the external atmospheric pressure and the air pressure in the filter tank 1. The above-mentioned filtering, cooling, discharging, pressure recovery and suction operations are repeated in this way to achieve continuous extraction, filtration and separation of the organic silicone oil, effectively remove impurities in the organic silicone oil, and improve the purity and quality of the organic silicone oil.

[0046] The above embodiments are only exemplary embodiments of the present invention and are not intended to limit the present invention. The protection scope of the present invention is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present invention within the essence and protection scope of the present invention, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present invention.

Claims

1. An organic silicone oil extraction, filtration and separation device, characterized in that: The invention comprises a filter tank (1) and a front end plate (2) and a rear end plate (3) installed at both ends of the filter tank (1); a cooling shaft (4) penetrating inside and outside is provided at the center of the front end plate (2), and the cooling shaft (4) is rotatably connected to the center of the front end plate (2); a filter element (5) is installed at one end of the cooling shaft (4) by bolts; a discharge pipe (6) penetrating inside and outside is provided at the center of the rear end plate (3), and the discharge pipe (6) is rotatably connected to the center of the rear end plate (3); one end of the discharge pipe (6) is connected to the filter element (5), and the discharge pipe (6) is driven by a motor, the filter element (5) rotates to remove surface impurities, and the organic silicone oil entering the filter element (5) is cooled by the cooling shaft (4), so that the organic silicone oil is discharged through the discharge pipe (6); The filter tank (1) is provided with a cleaning mechanism (7) inside, and the cleaning mechanism (7) is connected to the rear end plate (3) to remove impurities around the filter element (5). The filter tank (1) is provided with a pneumatic structure (8) inside, and the pressure inside the filter tank (1) is changed by the pneumatic structure (8) to allow the silicone oil to quickly pass through the filter element (5); The filter tank (1) is provided with a feed port (9), and a check valve A (10) and a check valve B (11) are respectively installed on the feed port (9) and the discharge pipe (6). When the air pressure structure (8) changes the pressure in the filter tank (1), the check valve A (10) is closed under pressure, while the check valve B (11) is opened, so that the organic silicone oil passes through the filter element (5) quickly under pressure and is discharged from the discharge pipe (6). When the air pressure structure (8) restores the pressure in the filter tank (1), the check valve A (10) is opened, and the check valve B (11) is closed, so that the organic silicone oil is sucked from the feed port (9).

2. The organic silicone oil extraction, filtration and separation device according to claim 1, characterized in that: The cooling shaft (4) comprises a shaft body (41) rotatably connected to the front end plate (2); a drainage pipe (42) is provided at the center of the shaft body (41), and the drainage pipe (42) extends from the shaft body (41) in a direction away from the front end plate (2); four groups of water pipes (43) are arranged in the shaft body (41) and are distributed around the drainage pipe (42); a notch (44) is provided on the shaft body (41) outside the filter tank (1), and the notch (44) is connected to the four groups of water pipes (43); a rotary notch (44) is provided on the notch (44) of the shaft body (41) A sealing sleeve (45) is provided for rotating the seal, and a connecting port (46) is installed on the sealing sleeve (45). The four groups of water pipes (43) extend from the other end of the shaft body (41) and are connected to a U-shaped heat dissipation pipe (47). The other end of the heat dissipation pipe (47) extends into the shaft body (41) and is connected to a drain pipe (42). A flange (48) for connecting to a filter element (5) through bolts is installed on the shaft body (41). The heat dissipation pipe (47) is located inside the filter element (5). The heat dissipation pipe (47) cools the organic silicone oil entering the filter element (5).

3. The organic silicone oil extraction, filtration and separation device according to claim 1, characterized in that: The discharge pipe (6) comprises a pipe body (61) rotatably connected to the rear end plate (3); a connection plate (62) is installed at one end of the pipe body (61) located inside the filter tank (1); a plurality of guide pillars (63) are installed on the connection plate (62); and corresponding holes are provided on the end surface of the filter element (5); a microporous tube (64) inserted into the filter element (5) is installed on the end surface of the pipe body (61); the organic silicone oil entering the filter element (5) is discharged from the pipe body (61) through the microporous tube (64); and the pipe body (61) is driven by a motor so that the pipe body (61) drives the filter element (5) to rotate, thereby removing impurities attached to the surface through friction.

4. The organic silicone oil extraction, filtration and separation device according to claim 1, characterized in that: The cleaning mechanism (7) comprises a plurality of groups of reciprocating screw rods (71) penetrating the rear end plate (3) and extending to the interior of the filter tank (1), and the reciprocating screw rods (71) are rotatably connected to the rear end plate (3), a circular ring (72) is provided at the front end of the reciprocating screw rods (71), and the rear end plate (3) is connected to the circular ring (72) by bolts, and the reciprocating screw rods (71) are rotatably connected to the circular ring (72), and a plurality of groups of the reciprocating screw rods (71) are provided with movable mesh screens (73), the filter element (5) is on the inner side of the mesh screen (73), and the plurality of groups of the reciprocating screw rods (71) are on the outer side of the mesh screen (73). A small gear (75) is installed at the end, and a large gear (74) meshing with a plurality of groups of small gears (73) is installed on the discharge pipe (6) located outside the rear end plate (3). A shield (76) for shielding the small gear (75) and the large gear (74) is installed on the rear end plate (3), and the discharge pipe (6) is led out from the middle of the shield (76). The discharge pipe (6) is driven to rotate by a motor, and under the gear transmission, a plurality of groups of reciprocating screw rods (71) are rotated, and the mesh screen (73) reciprocates on the reciprocating screw rods (71) to clean the impurities around the filter element (5).

5. The organic silicone oil extraction, filtration and separation device according to claim 1, characterized in that: The air pressure structure (8) comprises a filter tank (1) having a plurality of groups of equally spaced annular grooves (81) formed therein, and an annular air bag (82) arranged in the annular groove (81); an elastic protective layer (83) is laid on the inner side of the filter tank (1); a plurality of groups of positioning rings (84) distributed on both sides of the annular air bag (82) are installed on the inner side of the elastic protective layer (83); and an air port (85) for connecting the annular air bag (82) is arranged on the outer side of the filter tank (1).

6. The organic silicone oil extraction, filtration and separation device according to claim 1, characterized in that: A protrusion (12) is provided in the middle of the filter tank (1), and an annular channel is provided in the protrusion (12), and a plurality of groups of discharge ports for connecting the annular channel are provided on the inner side of the protrusion (12), and the feed port (9) is mounted on the protrusion (12), and silicone oil is introduced into the interior of the filter tank (1) through the plurality of groups of discharge ports connected through the annular channel.

7. A method for extracting, filtering and separating organic silicone oil, characterized in that: The organic silicone oil extraction, filtration and separation device according to any one of claims 1 to 6 is used, and the specific operations are as follows: S1, introducing organic silicone oil into the filter tank (1), and the discharge pipe (6) is driven by a motor to drive the filter element (5) and the cooling shaft (4) to rotate, and the air pressure structure (8) is inflated and starts to operate, squeezing the space inside the filter tank (1), and the B check valve (11) is opened, and the A check valve (10) is closed, so that the organic silicone oil passes through the filter element (5) by squeezing; S2, the organic silicone oil enters the filter element (5), contacts the cooling shaft (4) and is cooled, and then the organic silicone oil is discharged through the discharge pipe (6), and the cleaning mechanism (7) reciprocates to clean the impurities on the surface of the filter element (5), and moves the impurities to the two ends of the filter tank (1); S3. After the air pressure structure (8) returns to normal, the A check valve (10) opens, the B check valve (11) closes, and the air pressure in the filter tank (1) decreases, so that the organic silicone oil is sucked in from the feed port (9). This filtering is repeated to separate impurities.

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