A perfluoropolyether isolation mixing device

Abstract

The utility model discloses a perfluoropolyether and other medium isolation mixing device. The utility model discloses a base, four groups of support bars are fixedly connected to the base upper end, the support bar upper end is fixedly connected with the top plate, the support bar circumferential surface is fixedly connected with the layer board, a plurality of groups of raw material boxes are arranged on the top plate upper end, a plurality of groups of ration cylinders are fixedly connected to the layer board bottom, the raw material box circumferential surface is fixedly connected with the connecting pipe, the ration cylinder circumferential surface is fixedly connected with check valve no.

Description

Technical Field

[0001] This utility model relates to the technical field of special lubricant mixing equipment, specifically a device for isolating and mixing perfluoropolyether with other media. Background Technology

[0002] Perfluoropolyether (PFPE) is a synthetic polymer that is liquid at room temperature. It is composed of carbon, fluorine, and oxygen atoms, and its main molecular chain contains flexible ether bonds. Fluorine atoms replace hydrogen atoms to form strong CF bonds, giving it high thermal stability (up to 300℃), chemical inertness, low volatility, and a wide liquid temperature range (-80–300℃). This material has been used as a lubricant for aerospace machinery since the 1960s, and its applications have gradually expanded to nuclear industry centrifuges, semiconductor vacuum pumps, and magnetic recording media. However, high-temperature decomposition may generate toxic substances. PFPE requires extremely high purity (impurity content <10ppm). Premature contact with other media can lead to a sharp drop in lubrication performance (increasing the coefficient of friction by more than 30%) due to contamination.

[0003] However, traditional mixing equipment uses a single-chamber design, requiring materials to share pipes or valves during transport, leading to premature contact between perfluoropolyether and other media. For example, in a gear pump conveying system, residual mineral oil can contaminate the perfluoropolyether, reducing the corrosion resistance of the mixed oil. Even with dual-pump conveying, the dead volume during valve switching can still cause cross-contamination, failing to meet the "zero contamination" requirement of semiconductor equipment. Utility Model Content

[0004] The purpose of this invention is to provide a device for isolating and mixing perfluoropolyether with other media to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a perfluoropolyether and other media isolation and mixing device, comprising: a base, four sets of support rods fixedly connected to the upper end of the base, a top plate fixedly connected to the upper end of the support rods, a shelf fixedly connected to the periphery of the support rods, multiple sets of raw material boxes provided at the upper end of the top plate, multiple sets of metering cylinders fixedly connected to the bottom of the shelf, connecting pipes fixedly connected to the periphery of the raw material boxes, a one-way valve fixedly connected to the periphery of the metering cylinder, one end of the connecting pipe fixedly connected to the outlet of the raw material box, and the other end fixedly connected to the one-way valve on the periphery of the metering cylinder, a second one-way valve fixedly installed at the bottom of the metering cylinder, a telescopic cylinder fixedly installed at the upper end of the top plate, a connecting plate fixedly connected to the output end of the telescopic cylinder, multiple sets of connecting rods fixedly connected to the bottom of the connecting plate, the connecting rods slidingly connected to the metering cylinder, a piston slidingly connected inside the metering cylinder, and the piston fixedly connected to the corresponding connecting rod.

[0006] Furthermore, each set of metering cylinders has the same length but different inner diameters, and the inner diameters are designed according to the proportions of the raw materials.

[0007] Furthermore, the one-way valve is located on the circumferential side of the metering cylinder near the bottom surface, 10mm away from the inner bottom surface of the metering cylinder.

[0008] Furthermore, a mixing box is fixedly installed on the upper end of the base, and a discharge port is provided on the periphery of the mixing box.

[0009] Furthermore, a solenoid valve is installed on the discharge port.

[0010] Furthermore, a motor is fixedly installed at the upper end of the mixing box, and a transmission rod is rotatably connected inside the mixing box, with the transmission rod fixedly connected to the output end of the motor.

[0011] Furthermore, an anchor-type stirring paddle is fixedly connected to the periphery of the transmission rod, and a dispersing disc is fixedly connected to the periphery of the transmission rod.

[0012] Furthermore, a turbine agitator is fixedly connected to the bottom end of the transmission rod, and an ultrasonic transducer is fixedly installed on the bottom inner side of the mixing box.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This invention allows the raw materials inside the raw material box to be quantitatively extracted by a metering cylinder and then injected into the mixing box, so that the raw materials can be mixed in proportion. At the same time, this structure can add raw materials individually, which can prevent cross-contamination of raw materials. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the front view structure in one embodiment of the present invention;

[0016] Figure 2 for Figure 1 Schematic diagram of the front cross-sectional structure of the middle metering cylinder;

[0017] Figure 3 for Figure 1 A cross-sectional view of the mixing chamber.

[0018] Figure 4 for Figure 3 A schematic diagram of the structure of the dispersion disc and the turbine agitator.

[0019] Reference numerals in the attached diagram: 1. Base; 2. Support rod; 3. Top plate; 4. Shelf; 5. Raw material box; 6. Metering cylinder; 7. Connecting pipe; 8. One-way valve one; 9. One-way valve two; 10. Telescopic cylinder; 11. Connecting plate; 12. Connecting rod; 13. Piston; 14. Mixing box; 15. Discharge port; 16. Motor; 17. Transmission rod; 18. Anchor-type stirring paddle; 19. Dispersion disc; 20. Turbine agitator; 21. Ultrasonic vibrator. Detailed Implementation

[0020] 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.

[0021] Please refer to the following: Figures 1-4 ,in Figure 1 This is a schematic diagram of the front view structure in one embodiment of the present invention; Figure 2 for Figure 1 Schematic diagram of the front cross-sectional structure of the middle metering cylinder; Figure 3 for Figure 1 A cross-sectional view of the mixing chamber. Figure 4 for Figure 3 A schematic diagram of the structure of a dispersion disc and a turbine agitator, illustrating a perfluoropolyether mixing device for isolating and mixing with other media, comprising: a base 1, four sets of support rods 2 fixedly connected to the upper end of the base 1, a top plate 3 fixedly connected to the upper end of the support rods 2, and shelves 4 fixedly connected to the sides of the support rods 2; multiple sets of raw material bins 5 disposed on the upper end of the top plate 3; multiple sets of metering cylinders 6 fixedly connected to the bottom of the shelves 4; connecting pipes 7 fixedly connected to the sides of the raw material bins 5; and one-way valves 8 fixedly connected to the sides of the metering cylinders 6. One end of the connecting pipe 7 is fixedly connected to the outlet of the raw material bins 5, and the other end is fixedly connected to the one-way valve 8 on the side of the metering cylinders 6. The bottom of the metering cylinders 6 is fixedly connected to... A one-way valve 9 is fixedly installed. A telescopic cylinder 10 is fixedly installed on the upper end of the top plate 3. A connecting plate 11 is fixedly connected to the output end of the telescopic cylinder 10. Multiple sets of connecting rods 12 are fixedly connected to the bottom of the connecting plate 11. The connecting rods 12 are slidably connected to the metering cylinder 6. A piston 13 is slidably connected inside the metering cylinder 6. The piston 13 is fixedly connected to the corresponding connecting rod 12. The one-way valve 8 restricts the raw material to flow into the metering cylinder 6 only from the raw material box 5 through the connecting pipe 7 to prevent the raw material from flowing back. The raw material inside the metering cylinder 6 cannot flow back into the connecting pipe 7. The one-way valve 9 allows the raw material inside the metering cylinder 6 to flow only into the mixing box 14.

[0022] Each set of metering cylinders 6 has the same length but different inner diameters, and the inner diameters are designed according to the proportions of the raw materials.

[0023] One-way valve 8 is located on the side of metering cylinder 6 near the bottom, 10mm away from the bottom inner side of metering cylinder 6.

[0024] A mixing chamber 14 is fixedly installed on the upper end of the base 1. A discharge port 15 is provided on the side of the mixing chamber 14. The inner wall of the mixing chamber 14 is coated with a PTFE coating with a thickness of 50μm. The surface energy of the coating is <15mN / m, which reduces material adhesion.

[0025] A solenoid valve is installed on the discharge port 15.

[0026] A motor 16 is fixedly installed on the upper end of the mixing box 14, and a transmission rod 17 is rotatably connected inside the mixing box 14. The transmission rod 17 is fixedly connected to the output end of the motor 16.

[0027] An anchor-type stirring paddle 18 is fixedly connected to the side of the transmission rod 17, and a dispersion disc 19 is fixedly connected to the side of the transmission rod 17. The anchor-type stirring paddle 18 is used for macroscopic material agitation, and the dispersion disc 19 rotates to generate shear force to break up large droplets.

[0028] A turbine stirrer 20 is fixedly connected to the bottom of the transmission rod 17, and an ultrasonic transducer 21 is fixedly installed on the bottom surface of the inner side of the mixing box 14. The rotation of the turbine stirrer 20 generates strong turbulence to promote micro-mixing.

[0029] It should be noted that the telescopic cylinder 10, motor 16, ultrasonic transducer 21, and solenoid valve installed on the discharge port 15 can all be purchased on the market or customized in the factory. The wiring connection method and control method are mature technologies in this field and have been fully disclosed. Therefore, they will not be described again in this article.

[0030] In summary, the present invention provides a perfluoropolyether and other media isolation mixing device. During operation, the telescopic cylinder 10 drives the connecting plate 11 to move upward, which in turn drives the piston 13 to slide upward inside the metering cylinder 6 via the connecting rod 12. At this time, the raw materials inside the raw material box 5 can enter the metering cylinder 6 through the connecting pipe 7 and the one-way valve 8. When the telescopic cylinder 10 drives the connecting plate 11 to move downward, the piston 13 moves downward inside the metering cylinder 6, which can push out the raw materials inside the metering cylinder 6. The inner diameter of each set of metering cylinders 6 is designed according to the mixing ratio to ensure that the ratio of the pushed-out raw materials accurately matches the process requirements. At the same time, each raw material is transported separately to ensure that the raw materials are not cross-contaminated.

[0031] After being pushed out from the bottom of the metering cylinder 6, the raw material passes through the one-way valve 29 and enters the mixing chamber 14. At this time, the motor 16 drives the transmission rod 17 to rotate. The rotation of the transmission rod 17 causes the anchor-type stirring paddle 18, the dispersion disk 19 and the turbine stirrer 20 to rotate synchronously. This allows the raw material inside the mixing chamber 14 to be mixed and stirred. At the same time, the ultrasonic transducer 21 causes the raw material inside the mixing chamber 14 to vibrate. Through the three-layer stirring and ultrasonic synergistic mixing mechanism, the particle size of the dispersed phase is reduced to 5-10μm. After mixing, the raw material does not separate into layers after standing for 24 hours, and its stability is significantly improved.

Claims

1. A device for isolating and mixing perfluoropolyether with other media, characterized in that, include: A base (1) is provided, with four sets of support rods (2) fixedly connected to the upper end of the base (1). A top plate (3) is fixedly connected to the upper end of the support rods (2). A shelf (4) is fixedly connected to the periphery of the support rods (2). Multiple sets of raw material boxes (5) are provided on the upper end of the top plate (3). Multiple sets of metering cylinders (6) are fixedly connected to the bottom of the shelf (4). A connecting pipe (7) is fixedly connected to the periphery of the raw material boxes (5). A one-way valve (8) is fixedly connected to the periphery of the metering cylinders (6). One end of the connecting pipe (7) is fixedly connected to the outlet of the raw material box (5). One end is fixedly connected to a one-way valve (8) on the side of the metering cylinder (6). A one-way valve (9) is fixedly installed at the bottom of the metering cylinder (6). A telescopic cylinder (10) is fixedly installed at the top of the top plate (3). A connecting plate (11) is fixedly connected to the output end of the telescopic cylinder (10). Multiple sets of connecting rods (12) are fixedly connected to the bottom of the connecting plate (11). The connecting rods (12) are slidably connected to the metering cylinder (6). A piston (13) is slidably connected inside the metering cylinder (6). The piston (13) is fixedly connected to the corresponding connecting rod (12).

2. The perfluoropolyether mixing and isolating device with other media according to claim 1, characterized in that, Each set of metering cylinders (6) has the same length but different inner diameters, and the inner diameters are designed according to the proportion of raw materials.

3. The perfluoropolyether mixing and isolating device with other media according to claim 2, characterized in that, The one-way valve (8) is located on the side of the metering cylinder (6) near the bottom, 10 mm away from the bottom of the inner side of the metering cylinder (6).

4. The perfluoropolyether-isolated mixing device according to claim 3, characterized in that, A mixing box (14) is fixedly installed on the upper end of the base (1), and a discharge port (15) is provided on the periphery of the mixing box (14).

5. The perfluoropolyether mixing device according to claim 4, characterized in that, A solenoid valve is installed on the discharge port (15).

6. The perfluoropolyether mixing device according to claim 5, characterized in that, A motor (16) is fixedly installed on the upper end of the mixing box (14), and a transmission rod (17) is rotatably connected inside the mixing box (14). The transmission rod (17) is fixedly connected to the output end of the motor (16).

7. The perfluoropolyether-isolated mixing device according to claim 6, characterized in that, An anchor-type stirring paddle (18) is fixedly connected to the periphery of the transmission rod (17), and a dispersing disc (19) is fixedly connected to the periphery of the transmission rod (17).

8. The perfluoropolyether mixing device according to claim 7, characterized in that, A turbine agitator (20) is fixedly connected to the bottom end of the transmission rod (17), and an ultrasonic transducer (21) is fixedly installed on the bottom inner side of the mixing box (14).

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