Cationic resin filtering device for electronic grade GBL

Abstract

The utility model relates to the technical field of filtering devices, in particular to a cationic resin filtering device for an electronic grade GBL, which comprises a filtering tank, the top of the filtering tank is in threaded connection with a top cover, a filtering assembly is arranged in the filtering tank and comprises a plurality of vertical cylinders, and the vertical cylinders are connected in the filtering tank in a sliding mode. Supports are fixedly connected to the interiors of the vertical cylinders, filter membranes are arranged on the supports, resin particles are arranged on the filter membranes, a driving assembly is arranged on the filtering tank and comprises a box body, the box body is fixedly connected to the filtering tank, a motor is fixedly connected to the box body, a push plate is slidably connected to the interior of the box body, and the push plate is fixedly connected to the filter tank. An output shaft of the motor is fixedly connected with the push plate, and connecting pipes are fixedly connected to the top and the bottom of the box body; according to the utility model, the cationic resin can be used for filtering the electronic-grade GBL produced industrially so as to remove metal ions mixed in the electronic-grade GBL.

Description

Technical Field

[0001] This utility model relates to the field of filtration device technology, specifically a cation exchange resin filtration device for electronic grade GBL. Background Technology

[0002] Electronic grade GBL is a high-purity grade of γ-butyrolactone, belonging to high-purity specialty chemicals. It is mainly used in the electronics industry, such as for cleaning precision electronic components.

[0003] Chemical plants typically produce industrial-grade GBL directly, which requires further filtration, adsorption, distillation, and purification to obtain electronic-grade GBL. However, even when electronic-grade GBL is finally obtained during the filtration, adsorption, distillation, and purification process, it may still contain metal ions due to contact with metal containers during processing. This can cause various adverse effects when the GBL is used. Therefore, a filtration device is needed to filter out the metal ions from the electronic-grade GBL. Utility Model Content

[0004] To address the aforementioned technical problems, this invention proposes a cation exchange resin filtration device for electronic-grade GBL, which utilizes cation exchange resin to filter industrially produced electronic-grade GBL to remove metal ions mixed in.

[0005] The technical solution to achieve the purpose of this utility model is as follows: a cation exchange resin filtration device for electronic grade GBL, comprising a filter tank, a top cover threadedly connected to the top of the filter tank, a filter assembly inside the filter tank, the filter assembly comprising vertical cylinders, multiple vertical cylinders slidably connected to the inside of the filter tank, a support fixedly connected inside each of the multiple vertical cylinders, a filter membrane disposed on each of the multiple supports, and resin particles disposed on each of the multiple filter membranes, a drive assembly disposed on the filter tank, the drive assembly comprising a housing, the housing fixedly connected to the filter tank, a motor fixedly connected to the housing, a push plate slidably connected inside the housing, the output shaft of the motor fixedly connected to the push plate, connecting pipes fixedly connected to the top and bottom of the housing, one connecting pipe communicating with the bottom of the filter tank, and a flexible hose fixedly connected to the other connecting pipe, the flexible hose communicating with the inside of the top cover.

[0006] Preferably, the filter assembly further includes an annular groove and arc-shaped rods, with an annular groove at the top of each vertical cylinder and two arc-shaped rods fixedly connected to the bottom of each vertical cylinder.

[0007] Preferably, the drive assembly further includes a piston and a spring, the piston being slidably connected inside the housing, and the spring being fixedly connected between the piston and the push plate.

[0008] Preferably, the drive assembly further includes two check valves, which are respectively disposed inside the two connecting pipes, and the two check valves are disposed in opposite directions.

[0009] Preferably, the drive assembly further includes a support hopper, which is fixedly connected to the bottom of the filter tank, with its top end connected to the vertical cylinder and its bottom end connected to one of the connecting pipes.

[0010] Preferably, the filter membrane is provided with a polytetrafluoroethylene coating, and the resin particles are laid on top of each filter membrane.

[0011] Compared with the prior art, the significant advantages of this utility model are:

[0012] Firstly, in this invention, sufficient resin granules can be poured into the interior of each vertical cylinder, filling the interior of the cylinder. Then, two arc-shaped rods at the bottom of each vertical cylinder are inserted into the annular grooves at the top of other vertical cylinders, allowing multiple vertical cylinders to be spliced ​​end to end. The spliced ​​vertical cylinders are then placed into the filter tank, and the GBL to be filtered is poured in. The GBL will slowly seep to the bottom of the filter tank. At this point, the top cover is tightened, and the motor is started. The motor's output shaft will drive the push plate to move back and forth, which will compress the spring. The spring uses its own elasticity to make the piston move back and forth. The reciprocating movement of the piston will generate negative or high pressure inside the tank.

[0013] Secondly, in this invention, when the chamber is under negative pressure, the connecting pipe and support bucket below will cause GBL to be drawn into the chamber. At this time, the volume inside the entire filtration device increases and the overall air pressure decreases. This will cause the air above the filter tank to be drawn downward, thereby accelerating the filtration process. During the filtration process, the metal ions in GBL are adsorbed and removed by the resin particles.

[0014] Thirdly, in this utility model, when the chamber is under high pressure, the GBL drawn into the chamber will be squeezed to the connecting pipe above, and then through the hose, and finally discharged from the top cover to the filter tank. Therefore, as the motor output shaft moves back and forth, the GBL will be filtered and then transported to the top of the filter tank for filtration again, thus undergoing multiple filtrations. During the filtration process, negative pressure will be generated periodically in the chamber, which will accelerate the speed at which the GBL passes through the filter membrane and improve the filtration effect. Attached Figure Description

[0015] The present invention will be further explained below with reference to the accompanying drawings and embodiments:

[0016] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0017] Figure 2 This is a cross-sectional view of the internal structure of this utility model;

[0018] Figure 3 This utility model Figure 2 The diagram shows an enlarged view of part A.

[0019] Figure 4 This is a three-dimensional structural diagram of the filter component in this utility model.

[0020] Explanation of reference numerals in the attached figures:

[0021] 1. Filter tank; 2. Filter assembly; 21. Vertical cylinder; 22. Support; 23. Filter membrane; 24. Resin particles; 25. Annular groove; 26. Arc rod; 3. Drive assembly; 31. Housing; 32. Motor; 33. Push plate; 34. Piston; 35. Spring; 36. Connecting pipe; 37. Check valve; 38. Support hopper; 39. Hose; 4. Top cover. Detailed Implementation

[0022] The present invention will now be described in detail, and the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0023] This utility model provides an improved cationic resin filtration device for electronic-grade GBL. The technical solution of this utility model is as follows:

[0024] like Figures 1-4As shown, a cation exchange resin filtration device for electronic-grade GBL includes a filter tank 1 with a top cover 4 threadedly connected to its top. A filter assembly 2 is disposed inside the filter tank 1, comprising vertical cylinders 21. Multiple vertical cylinders 21 are slidably connected inside the filter tank 1, and supports 22 are fixedly connected inside each of the multiple vertical cylinders 21. Filter membranes 23 are disposed on each of the multiple supports 22, and resin particles 24 are disposed on each of the multiple filter membranes 23. The resin particles 24 are made of cation exchange resin, which can absorb cations, including various metal ions, when in contact with GBL. The direct use of granular cation exchange resin facilitates subsequent recovery. The filter tank 1 is equipped with a drive assembly 3, which includes a housing 31. The housing 31 is fixedly connected to the filter tank 1, and a motor 32 is fixedly connected to the housing 31. A push plate 33 is slidably connected inside the housing 31. The output shaft of the motor 32 is fixedly connected to the push plate 33. Connecting pipes 36 are fixedly connected to the top and bottom of the housing 31. One connecting pipe 36 is connected to the bottom of the filter tank 1, and a flexible hose 39 is fixedly connected to the other connecting pipe 36. The flexible hose 39 is connected to the inside of the top cover 4. All the above components are made of polytetrafluoroethylene or coated with polytetrafluoroethylene to avoid reaction or corrosion due to prolonged contact with GBL.

[0025] Furthermore, the filter assembly 2 also includes an annular groove 25 and arc-shaped rods 26. An annular groove 25 is provided at the top of each vertical cylinder 21, and two arc-shaped rods 26 are fixedly connected to the bottom of each vertical cylinder 21. The arc-shaped rods 26 and the annular groove 25 fit together in size. Therefore, when the two arc-shaped rods 26 are inserted into the annular groove 25, the two vertical cylinders 21 can be spliced ​​together.

[0026] Furthermore, the drive assembly 3 also includes a piston 34 and a spring 35. The piston 34 is slidably connected inside the housing 31, and the spring 35 is fixedly connected between the piston 34 and the push plate 33. When the push plate 33 moves and the spring 35 moves the piston 34, a negative pressure or a high pressure will be formed inside the filter tank 1. At this time, the range of motion of the piston 34 can be adjusted according to the pressure change, accompanied by the stretching or compression of the spring 35.

[0027] Furthermore, the drive assembly 3 also includes a one-way valve 37. Two one-way valves 37 are respectively disposed inside two connecting pipes 36. The two one-way valves 37 are disposed in opposite directions. The one-way valve 37 located in the lower connecting pipe 36 only allows GBL to enter the housing 31 from the filter tank 1, while the one-way valve 37 located in the upper connecting pipe 36 only allows GBL to enter the hose 39 from the housing 31, and then discharge it back into the filter tank 1 through the top cover 4 for repeated filtration.

[0028] Furthermore, the drive assembly 3 also includes a support bucket 38, which is fixedly connected to the bottom of the filter tank 1. The top of the support bucket 38 is connected to the vertical cylinder 21, and the bottom of the support bucket 38 is connected to one of the connecting pipes 36.

[0029] Furthermore, the filter membrane 23 is coated with polytetrafluoroethylene, and resin particles 24 are laid on the top of each filter membrane 23.

[0030] The specific working method is as follows: pour sufficient resin granules 24 into the interior of each vertical cylinder 21 and fill the interior of the vertical cylinder 21 with resin granules 24. Then insert the two arc-shaped rods 26 at the bottom of each vertical cylinder 21 into the annular grooves 25 at the top of other vertical cylinders 21 to complete the splicing of multiple vertical cylinders 21. Place the spliced ​​vertical cylinders 21 into the filter tank 1, and then introduce the GBL to be filtered. The GBL will slowly pass through the resin granules 24 and gradually seep down to the bottom of the filter tank 1. At this time, tighten the top cover 4 and start the motor 32. The output shaft of the motor 32 will drive the push plate 33 to move back and forth. The push plate 33 will compress the spring 35. The spring 35 uses its own elasticity to make the piston 34 move back and forth. The reciprocating movement of the piston 34 will generate negative pressure or high pressure inside the box 31.

[0031] When the chamber 31 is under negative pressure, the connecting pipe 36 and the support bucket 38 below will cause GBL to be drawn into the chamber 31. At this time, the volume inside the entire filter device increases and the overall air pressure decreases. This will cause the air above the filter tank 1 to be drawn downward, thereby accelerating the filtration. During the filtration process, the metal ions in the GBL are adsorbed and removed by the resin particles.

[0032] When the chamber 31 is under high pressure, the GBL drawn into the chamber 31 will be squeezed to the connecting pipe 36 above, and then through the hose 39, and finally discharged from the top cover 4 to the filter tank 1. Therefore, as the output shaft of the motor 32 moves back and forth, the GBL will be filtered and then transported to the top of the filter tank 1 for filtration again, thus undergoing multiple filtrations. During the filtration process, negative pressure will be generated periodically in the chamber 31 to accelerate the speed at which the GBL passes through the filter membrane 23 and improve the filtration effect.

[0033] The technical means disclosed in this utility model are not limited to those described above, but also include technical solutions composed of equivalent substitutions of the above technical features. Matters not covered in this utility model are common knowledge to those skilled in the art.

Claims

1. A cation exchange resin filtration device for electronic-grade GBL, comprising a filter tank (1), wherein a top cover (4) is threadedly connected to the top of the filter tank (1), characterized in that: The filter tank (1) is equipped with a filter assembly (2), which includes a vertical cylinder (21). Multiple vertical cylinders (21) are slidably connected to the interior of the filter tank (1). Each vertical cylinder (21) has a fixed support (22) inside it. Each support (22) has a filter membrane (23) mounted on it, and each filter membrane (23) has resin particles (24) mounted on it. The filter tank (1) is equipped with a drive assembly (3), which includes a housing (31). The housing (31) is fixedly connected to the filter tank (1). A motor (32) is fixedly connected to the housing (31). A push plate (33) is slidably connected inside the housing (31). The output shaft of the motor (32) is fixedly connected to the push plate (33). Connecting pipes (36) are fixedly connected to the top and bottom of the housing (31). One of the connecting pipes (36) is connected to the bottom of the filter tank (1). A hose (39) is fixedly connected to the other connecting pipe (36). The hose (39) is connected to the inside of the top cover (4).

2. The cation exchange resin filtration device for electronic-grade GBL according to claim 1, characterized in that: The filter assembly (2) also includes an annular groove (25) and an arc rod (26). An annular groove (25) is provided at the top of each vertical cylinder (21), and two arc rods (26) are fixedly connected to the bottom of each vertical cylinder (21).

3. The cation exchange resin filtration device for electronic-grade GBL according to claim 1, characterized in that: The drive assembly (3) also includes a piston (34) and a spring (35). The piston (34) is slidably connected to the inside of the housing (31), and the spring (35) is fixedly connected between the piston (34) and the push plate (33).

4. The cation exchange resin filtration device for electronic-grade GBL according to claim 3, characterized in that: The drive assembly (3) also includes a one-way valve (37), with two one-way valves (37) respectively disposed inside two connecting pipes (36), and the two one-way valves (37) being disposed in opposite directions.

5. The cation exchange resin filtration device for electronic-grade GBL according to claim 4, characterized in that: The drive assembly (3) also includes a support bucket (38), which is fixedly connected to the bottom of the filter tank (1). The top of the support bucket (38) is connected to the vertical cylinder (21), and the bottom of the support bucket (38) is connected to one of the connecting pipes (36).

6. The cation exchange resin filtration device for electronic-grade GBL according to claim 1, characterized in that: The filter membrane (23) is provided with a polytetrafluoroethylene coating, and the resin particles (24) are laid on the top of each filter membrane (23).

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