Purifying and filtering device for parylene monomer

Abstract

The utility model relates to the technical field of parylene purification equipment, in particular to a parylene monomer purification and filtration device. Comprising an upper cavity, a lower cavity and a filtering device, the upper cavity is of an inverted barrel-shaped structure, a feeding pipe is arranged on the top face of the upper cavity, and a porous liquid distributor is arranged in the middle of the upper cavity; the lower cavity is of a split structure, the upper portion of the lower cavity is cylindrical, the lower end of the lower cavity is hemispherical, and the upper cavity and the lower cavity are connected through a hinge. The filter device comprises filter cloth, a silica gel layer and a stainless steel filter screen, the filter cloth and the stainless steel filter screen are circular, fixing adhesive tapes made of rubber are arranged on the edges of the filter cloth and the stainless steel filter screen, the filter cloth is arranged between the cylindrical upper parts of the upper cavity and the lower cavity, and the stainless steel filter screen is arranged between the upper part and the lower end of the lower cavity. A silica gel layer is filled between the filter cloth and the stainless steel filter screen. The porous liquid distributor is disc-shaped, and a plurality of through holes are uniformly distributed on the porous liquid distributor. The silica gel layer is powder of 200-300 meshes, and the laying thickness is 80-120 mm. And the filter cloth is 300 meshes. And the stainless steel filter screen 7 has 800 meshes.

Description

Technical Field

[0001] The utility model relates to the technical field of parylene purification equipment, in particular to a purification and filtering device for parylene monomers. Background Art

[0002] Parylene film is inseparable from its parylene material monomer, whose structure is di-polyparaxylene and its substituted derivatives. At present, according to different molecular structures, parylene materials can be divided into parylene N, parylene C, parylene F, parylene HT and other types. Among them, the raw materials of parylene C and parylene N are cheap and have the widest application range, but the high temperature resistance and UV resistance of parylene C and parylene N are poor, and the application effect is limited; the raw materials of parylene HT are difficult to obtain, the preparation efficiency is low, the price is very expensive, and the application range is the smallest; while parylene F has good high temperature resistance and UV resistance, and at the same time has a lower dielectric constant and good wave transmission performance, and is more suitable as a protective material for high-frequency microwave devices, and has great application prospects.

[0003] In the coating process, the quality of parylene monomer is very important, including halogen ion residue, non-volatile residue, color and other indicators need to be strictly controlled, otherwise it will affect the quality of the coating.

[0004] However, due to the high concentration of alkali and high temperature in the production process of parylene, serious pigments are produced, and polymers are also easily produced. Non-volatile residues, color and other indicators are at risk of exceeding the standard, and process stability cannot be well guaranteed. We adopt the method of laying a silica gel layer in the filter tank, and the solution can be effectively solved by adsorption through the silica gel layer.

[0005] However, during the silica gel adsorption process, bubbles are likely to form when the silica gel is laid, the laying is uneven, and there are cracks, which makes it impossible to compact it. When the solution is filtered, it is easy to filter through the gaps first, resulting in poor silica gel adsorption effect and failure to achieve the intended purification goal.

[0006] At the same time, during the solution discharge process, silica gel is easily scattered and cannot pass evenly, which greatly reduces the effect. Utility Model Content

[0007] The main purpose of the utility model is to provide a purification and filtering device for parylene monomers, so as to effectively solve the problems raised in the background technology.

[0008] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a purification and filtering device for parylene monomer, comprising an upper cavity, a lower cavity and a filtering device, wherein the upper cavity is an inverted barrel-shaped structure, a feed pipe is arranged on the top surface, and a porous liquid distributor is arranged in the middle; the lower cavity is a split structure, the upper part is cylindrical, the lower end is a hemispherical structure, a support leg is arranged at the lower end, a discharge pipe is arranged at the center of the lower end, a valve is installed in the middle of the discharge pipe, flanges are arranged at the interfaces of the upper cavity and the lower cavity, bolt holes are arranged on the flanges, and the upper cavity and the lower cavity are connected by hinges; the filtering device comprises a filter cloth, a silica gel layer, and a stainless steel filter screen, wherein the filter cloth and the stainless steel filter screen are both circular, a fixing tape made of rubber is arranged on the edge, and a plurality of bolt holes are arranged on the fixing tape, the filter cloth is arranged between the cylindrical upper part of the upper cavity and the lower cavity, and is fixed and pressed by bolts, the stainless steel filter screen is arranged between the upper part and the lower end of the lower cavity, and is fixed and pressed by bolts, and a silica gel layer is filled between the filter cloth and the stainless steel filter screen.

[0009] Preferably, the porous liquid distributor is in the shape of a disc and is provided with a plurality of evenly distributed through holes.

[0010] Preferably, the lower end surface of the lower cavity is a spherical structure, and a hole is opened at the lowest point below the sphere and connected to a discharge pipe.

[0011] Preferably, the silica gel layer is 200-300 mesh powder, and the laying thickness is 80-120 mm.

[0012] Preferably, the filter cloth is 300 mesh.

[0013] Preferably, the stainless steel filter screen 7 is 800 meshes.

[0014] The filled silica gel layer is pressed between the upper cavity and the lower cavity by the filter cloth and the stainless steel filter screen, and the overall structure is tight and uniform. The raw material crude liquid flows through the feed pipe to the porous liquid distributor for distribution, and then evenly enters the silica gel layer for filtration. This solves the problems of uneven silica gel laying, bubble cracks, and silica gel being washed by the solution, resulting in uneven thickness or even failure, and significantly improves the filtration effect.

[0015] The beneficial effects of the utility model are as follows: two problems are solved: 1. The silica gel is not laid flat, and there are problems of bubbles and cracks. 2. The silica gel is washed by the solution, resulting in uneven thickness or even failure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Attached Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model.

[0017] Attached Figure 2 It is a schematic diagram of the structure of the utility model in a top view.

[0018] Attached Figure 3 For attachment Figure 2 AA section view.

[0019] Attached Figure 4 This is a schematic diagram of the structure of the porous liquid distributor of the utility model.

[0020] Attached Figure 5 This is a schematic diagram of the stainless steel filter structure of the utility model.

[0021] Attached Figure 1 —5, lower cavity 1, porous liquid distributor 2, feed pipe 3, filter cloth 4, silicone layer 5, bolts 6, stainless steel filter screen 7, support legs 8, discharge pipe 9, valve 10, hinge 11, through hole 12, fixing tape 13, upper cavity 14. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0023] Example 1

[0024] Attached Figure 1 As shown in Figure 5, a purification and filtration device for parylene monomers comprises an upper cavity 14, a lower cavity 1 and a filtration device, wherein the upper cavity 14 is an inverted cylindrical structure, a feed pipe 3 is arranged on the top surface, and a porous liquid distributor 2 is arranged in the middle; the lower cavity 1 is a split structure, the upper part is cylindrical, the lower end is a hemispherical structure, a support leg 8 is arranged at the lower end, a discharge pipe 9 is arranged at the center of the lower end, a valve 10 is installed in the middle of the discharge pipe 9, and flanges are arranged at the interfaces of the upper cavity 14 and the lower cavity 1, and bolt holes are arranged on the flanges. The upper cavity 14 and the lower cavity 1 are connected by a hinge 11; the filtering device includes a filter cloth 4, a silicone layer 5, and a stainless steel filter screen 7. The filter cloth 4 and the stainless steel filter screen 7 are both circular, and a fixing tape 13 made of rubber is provided on the edge. A plurality of bolt holes are provided on the fixing tape. The filter cloth 4 is arranged between the upper cavity 14 and the cylindrical upper part of the lower cavity 1 and fixed and pressed by bolts 6. The stainless steel filter screen 7 is arranged between the upper part and the lower end of the lower cavity 1 and fixed and pressed by bolts 6. The silicone layer 5 is filled between the filter cloth 4 and the stainless steel filter screen 7.

[0025] Preferably, the porous liquid distributor 2 is disc-shaped and is provided with a plurality of evenly distributed through holes 12 .

[0026] Preferably, the lower end surface of the lower cavity 14 is a spherical structure, and a hole is opened at the lowest point below the sphere and connected to the discharge pipe 9.

[0027] Preferably, the silica gel layer 5 is 200-300 mesh powder, and the laying thickness is 100 mm.

[0028] Preferably, the filter cloth 4 is 300 meshes.

[0029] Preferably, the stainless steel filter screen 7 is 800 meshes.

[0030] The filled silica gel layer is pressed between the upper cavity and the lower cavity by the filter cloth and the stainless steel filter screen, and the whole is tight and uniform. The raw material crude liquid flows through the feed pipe 3 to the porous liquid distributor 2 for distribution, and then evenly enters the silica gel layer for filtration, which solves the problems of uneven laying of silica gel, bubble cracks, and the problem of silica gel being washed by the solution, resulting in uneven thickness or even failure, and significantly improves the filtering effect.

[0031] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A purification and filtration device for parylene monomers, characterized in that: It includes an upper cavity, a lower cavity and a filtering device. The upper cavity is an inverted barrel-shaped structure, a feed pipe is arranged on the top surface, and a porous liquid distributor is arranged in the middle; the lower cavity is a split structure, the upper part is cylindrical, the lower end is a hemispherical structure, the lower end is provided with support legs, a discharge pipe is arranged at the center of the lower end, a valve is installed in the middle of the discharge pipe, flanges are arranged at the interfaces of the upper cavity and the lower cavity, bolt holes are arranged on the flanges, and the upper cavity and the lower cavity are connected by hinges; the filtering device includes a filter cloth, a silica gel layer, and a stainless steel filter screen. The filter cloth and the stainless steel filter screen are both circular, and a fixing tape made of rubber is arranged on the edge, and a plurality of bolt holes are arranged on the fixing tape. The filter cloth is arranged between the cylindrical upper parts of the upper cavity and the lower cavity and is fixed and pressed by bolts. The stainless steel filter screen is arranged between the upper part and the lower end of the lower cavity and is fixed and pressed by bolts. A silica gel layer is filled between the filter cloth and the stainless steel filter screen.

2. The purification filtration device for parylene monomer according to claim 1, characterized in that: The porous liquid distributor is in the shape of a disc and is provided with a plurality of evenly distributed through holes.

3. The purification and filtration device for parylene monomer according to claim 1, characterized in that: The lower end surface of the lower cavity is a spherical structure, and a hole is opened at the lowest point below the sphere and connected to the discharge pipe.

4. The purification and filtration device for parylene monomer according to claim 1, characterized in that: The silica gel layer is 200-300 mesh powder, and the laying thickness is 80-120 mm.

5. The purification and filtration device for parylene monomer according to claim 1, characterized in that: The filter cloth is 300 mesh.

6. The purification filtration device for parylene monomer according to claim 1, characterized in that: The stainless steel filter (7) is 800 mesh.

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