A modified perfluoropolyether precision filtration device for shielding oil

Abstract

This utility model discloses a modified perfluoropolyether precision filtration device for shielded oil, relating to the field of perfluoropolyether oil filtration technology. The utility model includes a housing, with a connecting mechanism fixedly installed inside the housing cavity. A supporting mechanism is fixedly installed at the bottom of the connecting mechanism. The supporting mechanism includes a bottom ring, with several connecting rods fixedly installed at the top of the bottom ring, and a first magnetic suction element fixedly installed at the top of the inner ring of the bottom ring. This utility model works by placing the supporting ring and the fixing ring inside a filter bag. The edges of the supporting ring and the fixing ring comb the filter bag. When the fixing ring reaches the bottom of the filter bag, the second magnetic suction element and the first magnetic suction element generate an attraction force, clamping and fixing the bottom of the filter bag. This results in the filter bag being combed flat in the vertical direction. At this time, the supporting ring and the several supporting rods jointly support the inner wall of the bottom of the filter bag, ensuring that the filter bag remains in an unfolded state and that the perfluoropolyether oil flows evenly through all areas of the bag, guaranteeing the filtration effect.

Description

Technical Field

[0001] This utility model belongs to the field of perfluoropolyether oil filtration technology, and specifically relates to a modified perfluoropolyether precision filtration device for shielding oil. Background Technology

[0002] Shielding oil is made from perfluoropolyether oil, a synthetic polymer composed of fluorine, carbon, and oxygen. It is liquid at room temperature and possesses advantages such as strong chemical inertness, high temperature resistance, low volatility, low surface tension, and excellent insulation. Shielding oil is specifically used for shielding electroplated layers and preventing areas that do not require plating from being coated with a thin film. Given the high temperature and high vacuum conditions generated during coating machine operation, and the exposure to chemical gases and particle corrosion, the shielding oil must possess excellent heat resistance, sealing properties, and corrosion resistance. Because the properties of perfluoropolyether oil meet the performance requirements of the coating process, it is often used as a base raw material, formulated and refined to produce shielding oil products.

[0003] Existing filtration devices use filter bags to filter perfluoropolyether oil. When installing the filter bags, the open end is usually installed into the filtration device, while the closed end is suspended. This installation method, which relies solely on the open end for fixation and leaves the closed end unsupported, makes it difficult for operators to control the unfolding state of the filter bag within the device when manually fixing the open end into the slot or flange of the filtration device. This lack of positioning guidance for the closed end and the side of the bag makes it difficult for operators to control the unfolding state of the filter bag within the device. When the filtration system is started, the bag body is prone to folding, making it difficult for the perfluoropolyether oil to flow through the folded area under pressure, thus preventing the folded area from filtering the perfluoropolyether oil.

[0004] No effective solutions have yet been proposed to address the problems in the relevant technologies. Utility Model Content

[0005] In view of the problems in related technologies, this utility model proposes a modified perfluoropolyether precision filter device for shielded oil, so as to overcome the above-mentioned technical problems existing in the existing related technologies.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model is a modified perfluoropolyether precision filtration device for shielding oil, including a shell, and a connecting mechanism is fixedly installed in the inner cavity of the shell; A support mechanism is fixedly installed at the bottom of the connecting mechanism. The support mechanism includes a bottom ring, a plurality of connecting rods are fixedly installed at the top of the bottom ring, and a first magnetic suction component is fixedly installed at the top of the inner ring of the bottom ring. A filter bag is installed on the top of the bottom ring, and an installation ring is fixedly installed on the top of the filter bag; An unfolding mechanism is installed at the bottom of the inner cavity of the filter bag. The unfolding mechanism includes a support ring, a plurality of support rods are fixedly installed at the bottom of the support ring, a fixing ring is fixedly installed at the bottom of the plurality of support rods, and a second magnetic suction component is fixedly installed at the bottom of the fixing ring. The bottom of the outer casing is connected to an oil outlet pipe, the top of the outer casing is equipped with a top cover, the top of the top cover is connected to an oil inlet pipe, a PLC controller is fixedly installed on the top of the top cover, several fastening mechanisms are installed on the top of the connecting mechanism, a pressure sensor is installed in the inner cavity of the top cover, and the outer casing and the top cover are connected by several fasteners.

[0007] Furthermore, the mounting ring is provided with several placement slots.

[0008] Furthermore, two support frames are symmetrically fixedly installed on the back of the outer casing, and the support frames are provided with mounting holes.

[0009] Furthermore, the connecting mechanism includes a connecting ring, which is fixedly installed on the inner wall of the housing. A plurality of guide rods are fixedly installed on the top of the connecting ring, and threaded holes are opened in the guide rods.

[0010] Furthermore, the fastening mechanism includes a screw, a rotating block is fixedly installed on the top of the screw, and the outer wall of the rotating block is provided with several anti-slip grooves.

[0011] Furthermore, the PLC controller is electrically connected to the pressure sensor.

[0012] Furthermore, the fastener includes a double-ended bolt, on the outer wall of which two nuts are installed via a threaded structure.

[0013] This utility model has the following beneficial effects: This invention involves placing a support ring and a fixing ring inside a filter bag. The edges of the support ring and the fixing ring comb the filter bag. When the fixing ring reaches the bottom of the filter bag, the second magnetic component and the first magnetic component generate an attraction force to clamp and fix the bottom of the filter bag. As a result, the filter bag is combed flat in the vertical direction. At this time, the support ring and several support rods work together to support the inner wall of the bottom of the filter bag, ensuring that the filter bag always remains in an unfolded state and that the perfluoropolyether oil can flow evenly through all areas of the bag body, thus ensuring the filtration effect.

[0014] This invention uses a pressure sensor to monitor the pressure inside the housing in real time. The pressure sensor transmits the pressure data to the PLC controller. When the pressure of the perfluoropolyether oil in the housing reaches the preset value, the filter bag needs to be replaced. The PLC controller transmits the analysis results to the operator's computer so that the operator can know whether the filter bag needs to be replaced.

[0015] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the utility model embodiments, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a partial cross-sectional view of the outer shell of this utility model; Figure 3 This is a partial cross-sectional view of the filter bag of this utility model; Figure 4 This is a partial exploded view of the present invention; Figure 5 This is a bottom view of the top cover of this utility model; Figure 6 This is an overall structural diagram of the unfolding mechanism of this utility model.

[0018] The attached diagram lists the components represented by each number as follows: 1. Outer shell; 101. Support frame; 102. Mounting hole; 2. Connecting mechanism; 201. Connecting ring; 202. Guide rod; 203. Threaded hole; 3. Supporting mechanism; 301. Bottom ring; 302. Connecting rod; 303. First magnetic suction component; 4. Filter bag; 5. Mounting ring; 501. Placement groove; 6. Unfolding mechanism; 601. Support ring; 602. Support rod; 603. Fixing ring; 604. Second magnetic suction component; 7. Oil outlet pipe; 8. Top cover; 9. Oil inlet pipe; 12. PLC controller; 13. Fastening mechanism; 1301. Screw; 1302. Rotating block; 1303. Anti-slip groove; 15. Pressure sensor; 16. Fastener; 1601. Double-ended bolt; 1602. Nut. Detailed Implementation

[0019] The technical solutions of the utility model embodiments will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the utility model, and not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the utility model.

[0020] In the description of this utility model, it should be understood that the terms "opening", "upper", "lower", "top", "middle", "inner", etc., which indicate orientation or positional relationship, are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model.

[0021] Please see Figures 1-6 As shown, this utility model is a modified perfluoropolyether precision filter for shielding oil, including a shell 1, and a connecting mechanism 2 is fixedly installed in the inner cavity of the shell 1; The bottom of the connecting mechanism 2 is fixedly installed with a support mechanism 3. The support mechanism 3 includes a bottom ring 301. A plurality of connecting rods 302 are fixedly installed on the top of the bottom ring 301. A first magnetic suction element 303 is fixedly installed on the top of the inner ring of the bottom ring 301. A filter bag 4 is installed on the top of the bottom ring 301, and an installation ring 5 is fixedly installed on the top of the filter bag 4. The bottom of the inner cavity of the filter bag 4 is equipped with an unfolding mechanism 6. The unfolding mechanism 6 includes a support ring 601. A plurality of support rods 602 are fixedly installed at the bottom of the support ring 601. A fixing ring 603 is fixedly installed at the bottom of the plurality of support rods 602. A second magnetic suction member 604 is fixedly installed at the bottom of the fixing ring 603. The bottom of the outer casing 1 is connected to an oil outlet pipe 7, the top of the outer casing 1 is equipped with a top cover 8, the top of the top cover 8 is connected to an oil inlet pipe 9, a PLC controller 12 is fixedly installed on the top of the top cover 8, a number of fastening mechanisms 13 are installed on the top of the connecting mechanism 2, a pressure sensor 15 is installed in the inner cavity of the top cover 8, and the outer casing 1 and the top cover 8 are connected by a number of fasteners 16.

[0022] The PLC controller 12 is electrically connected to the pressure sensor 15.

[0023] First, install the filter bag 4. Hold the installation ring 5 and place the filter bag 4 into the area formed between several connecting rods 302. Place the installation ring 5 on top of the connecting mechanism 2. Then, hold the support ring 601 and place the fixing ring 603 into the filter bag 4. The diameters of the support ring 601 and the fixing ring 603 are the same as the diameter of the filter bag 4 when it is fully unfolded. Subsequently, the support ring 601 and the fixing ring 603 are continuously lowered into the filter bag 4. The edges of the support ring 601 and the fixing ring 603 can comb the filter bag 4. When the fixing ring 603 reaches the bottom of the filter bag 4, the second magnetic suction member 604 at its bottom will attract the first magnetic suction member 303 at the top of the bottom ring 301, clamping and fixing the bottom of the filter bag 4. This makes the filter bag 4 flat in the vertical direction. At the same time, the support ring 601 and several support rods 602 together support the inner wall of the bottom of the filter bag 4, ensuring that the filter bag 4 always remains unfolded, ensuring that the perfluoropolyether oil can flow evenly through all areas of the bag body, and ensuring the filtration effect. Then, several fastening mechanisms 13 are screwed onto the connecting mechanism 2 respectively, so that the mounting ring 5 is fixed on the connecting mechanism 2. Then, the top cover 8 is placed on the outer shell 1, and several fasteners 16 are used to fix the outer shell 1 and the top cover 8 together. The oil inlet pipe 9 is connected to an external oil delivery device, which then delivers perfluoropolyether oil into the oil inlet pipe 9. The perfluoropolyether oil enters the inner cavity of the outer shell 1 and then enters the filter bag 4. The perfluoropolyether oil is then filtered through the filter bag 4. The filtered perfluoropolyether oil enters the outer area of ​​the filter bag 4 and finally enters the oil outlet pipe 7. The filtered perfluoropolyether oil is then discharged from the oil outlet pipe 7. Impurities on the perfluoropolyether oil are intercepted on the inner wall of the filter bag 4. Meanwhile, the pressure sensor 15 (model: SUAY15) can monitor the pressure inside the housing 1 in real time, that is, monitor the pressure of the perfluoropolyether oil that has not been filtered by the filter bag 4. The pressure sensor 15 transmits the pressure data to the PLC controller 12 (model: CP1H) through the wire. The PLC controller 12 analyzes the data. When the pressure of the perfluoropolyether oil in the housing 1 reaches the preset value, the filter bag 4 is unable to filter the perfluoropolyether oil due to too many impurities on its inner wall. This indirectly reflects the degree of blockage of the filter bag 4. At this time, the filter bag 4 needs to be replaced. The PLC controller 12 transmits the analysis results to the operator's computer so that the operator can know whether the filter bag 4 needs to be replaced. It is important to note that the first magnetic element 303 and the second magnetic element 604 are preferably magnets. During the filtration of perfluoropolyether oil by the filter bag 4, the perfluoropolyether oil flows through the filter bag 4 under pressure generated by continuous delivery. This pressure causes the inner wall of the filter bag 4 to be subjected to an outward expansion force. At this time, the attraction between the first magnetic element 303 and the second magnetic element 604 is greater than the expansion force exerted on the filter bag 4 by the pressure. Even if the filter bag 4 has an expansion tendency due to the flow pressure of the perfluoropolyether oil during the filtration process, the filter bag 4 can still maintain a vertical and flat state in the vertical direction under the pulling force of the second magnetic element 604.

[0024] In one embodiment, for the aforementioned housing 1, two support frames 101 are symmetrically fixedly installed on the back of the housing 1, and the support frames 101 are provided with mounting holes 102.

[0025] Each support bracket 101 is then installed in the desired position by passing several bolts through the mounting holes 102.

[0026] In one embodiment, the mounting ring 5 is provided with a plurality of placement slots 501.

[0027] The connecting mechanism 2 includes a connecting ring 201, which is fixedly installed on the inner wall of the outer shell 1. A plurality of guide rods 202 are fixedly installed on the top of the connecting ring 201, and threaded holes 203 are opened in the guide rods 202.

[0028] The fastening mechanism 13 includes a screw 1301, and a rotating block 1302 is fixedly installed on the top of the screw 1301. The outer wall of the rotating block 1302 is provided with a plurality of anti-slip grooves 1303.

[0029] Several connecting rods 302 are fixedly installed at the bottom of the connecting ring 201. When the filter bag 4 is placed into the area formed by the connecting rods 302, the mounting ring 5 needs to be fixed to the connecting ring 201. The placement grooves 501 on the mounting ring 5 are placed on the guide rods 202. The guide rods 202 guide the mounting ring 5 to the connecting ring 201 and also restrict the rotation of the mounting ring 5. When the mounting ring 5 is completely placed on the top of the connecting ring 201, the operator screws the screw 1301 into the threaded hole 203 through the rotating block 1302. Then, one end of the rotating block 1302 will abut against the mounting ring 5. When all the rotating blocks 1302 abut against the top of the mounting ring 5, the mounting ring 5 will be fixed to the connecting ring 201 by the rotating blocks 1302. Since the anti-slip grooves 1303 are covered with perfluoropolyether oil, the anti-slip grooves 1303 increase the friction between the hand and the rotating blocks 1302.

[0030] In one embodiment, the fastener 16 includes a double-ended bolt 1601, on which two nuts 1602 are installed by a threaded structure on the outer wall of the double-ended bolt 1601.

[0031] The double-ended bolts 1601 are passed through the connection between the outer shell 1 and the top cover 8, so that the two ends of the double-ended bolts 1601 are above the top cover 8 and below the outer shell 1, respectively. Then, two nuts 1602 are screwed onto the threads of the double-ended bolts 1601, with one nut 1602 abutting against the top cover 8 and the other against the bottom of the outer shell 1, thereby installing the top cover 8 onto the outer shell 1.

[0032] Working principle: First, hold the mounting ring 5 and place the filter bag 4 into the area formed between the connecting rods 302. The placement slots 501 on the mounting ring 5 are placed on the guide rods 202 respectively. Then, the mounting ring 5 is placed on top of the connecting ring 201. Next, the screw 1301 is screwed into the threaded hole 203 through the rotating block 1302. Then, one end of the rotating block 1302 will abut against the mounting ring 5. When all the rotating blocks 1302 abut against the top of the mounting ring 5, the mounting ring 5 will be fixed to the connecting ring 201. Next, hold the support ring 601 and put the fixing ring 603 into the filter bag 4. The diameter of the support ring 601 and the fixing ring 603 is the same as the diameter of the filter bag 4 when it is fully unfolded. The support ring 601 and the fixing ring 603 are continuously lowered into the filter bag 4. The edges of the support ring 601 and the fixing ring 603 can comb the filter bag 4. When the fixing ring 603 reaches the bottom of the filter bag 4, the second magnetic suction member 604 at the bottom will attract the first magnetic suction member 303 at the top of the bottom ring 301, clamping and fixing the bottom of the filter bag 4. This makes the filter bag 4 flat in the vertical direction. At the same time, the support ring 601 and several support rods 602 together support the inner wall of the bottom of the filter bag 4, ensuring that the filter bag 4 always remains in the unfolded state. Next, pass the double-ended bolts 1601 through the connection between the outer shell 1 and the top cover 8, and then screw the two nuts 1602 onto the threads of the double-ended bolts 1601. Then, one nut 1602 abuts against the top cover 8 and the other abuts against the bottom of the outer shell 1, thereby installing the top cover 8 onto the outer shell 1. Finally, the oil inlet pipe 9 is connected to an external oil delivery device, which delivers perfluoropolyether oil into the oil inlet pipe 9. The perfluoropolyether oil enters the inner cavity of the outer shell 1 and then enters the filter bag 4. The perfluoropolyether oil is filtered through the filter bag 4. The filtered perfluoropolyether oil enters the outer area of ​​the filter bag 4 and finally enters the oil outlet pipe 7. The filtered perfluoropolyether oil is then discharged from the oil outlet pipe 7. Impurities on the perfluoropolyether oil are intercepted on the inner wall of the filter bag 4. At the same time, the pressure sensor 15 can monitor the pressure in the inner cavity of the outer shell 1 in real time. The pressure sensor 15 transmits the pressure data to the PLC controller 12. When the perfluoropolyether oil pressure reaches the preset value, the filter bag 4 needs to be replaced.

[0033] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0034] The preferred embodiments of the utility model disclosed above are merely illustrative of the utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the utility model, thereby enabling those skilled in the art to better understand and utilize it. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A precision filter device for shielding oil modified perfluoropolyether, comprising a housing (1), characterized in that: A connecting mechanism (2) is fixedly installed in the inner cavity of the outer shell (1); The bottom of the connecting mechanism (2) is fixedly installed with a support mechanism (3), the support mechanism (3) includes a bottom ring (301), a plurality of connecting rods (302) are fixedly installed on the top of the bottom ring (301), and a first magnetic suction element (303) is fixedly installed on the top of the inner ring of the bottom ring (301). A filter bag (4) is installed on the top of the bottom ring (301), and an installation ring (5) is fixedly installed on the top of the filter bag (4). The filter bag (4) has an unfolding mechanism (6) installed at the bottom of its inner cavity. The unfolding mechanism (6) includes a support ring (601). A plurality of support rods (602) are fixedly installed at the bottom of the support ring (601). A fixing ring (603) is fixedly installed at the bottom of the plurality of support rods (602). A second magnetic suction element (604) is fixedly installed at the bottom of the fixing ring (603). The bottom of the outer shell (1) is connected to an oil outlet pipe (7), the top of the outer shell (1) is equipped with a top cover (8), the top of the top cover (8) is connected to an oil inlet pipe (9), a PLC controller (12) is fixedly installed on the top of the top cover (8), several fastening mechanisms (13) are installed on the top of the connecting mechanism (2), a pressure sensor (15) is installed in the inner cavity of the top cover (8), and the outer shell (1) and the top cover (8) are connected by several fasteners (16).

2. The modified perfluoropolyether precision filter for shielding oil according to claim 1, characterized in that, The mounting ring (5) has several placement slots (501).

3. The modified perfluoropolyether precision filter for shielding oil according to claim 1, characterized in that, Two support frames (101) are symmetrically fixedly installed on the back of the outer shell (1), and the support frames (101) are provided with mounting holes (102).

4. The modified perfluoropolyether precision filter for shielding oil according to claim 1, characterized in that, The connecting mechanism (2) includes a connecting ring (201), which is fixedly installed on the inner wall of the outer shell (1). Several guide rods (202) are fixedly installed on the top of the connecting ring (201), and threaded holes (203) are opened in the guide rods (202).

5. The modified perfluoropolyether precision filter for shielding oil according to claim 1, characterized in that, The fastening mechanism (13) includes a screw (1301), a rotating block (1302) is fixedly installed on the top of the screw (1301), and a plurality of anti-slip grooves (1303) are provided on the outer wall of the rotating block (1302).

6. The modified perfluoropolyether precision filter for shielding oil according to claim 1, characterized in that, The PLC controller (12) is electrically connected to the pressure sensor (15).

7. The modified perfluoropolyether precision filter for shielding oil according to claim 1, characterized in that, The fastener (16) includes a double-ended bolt (1601), on which two nuts (1602) are installed by a threaded structure on the outer wall of the double-ended bolt (1601).

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