Filter for silica gel production

Abstract

The utility model provides a filter for silica gel production, which comprises a filter cartridge, the outer side of the filter cartridge is outwards communicated with a liquid inlet connecting pipe orifice, one end of the filter cartridge is outwards communicated with a liquid outlet connecting pipe orifice, a cylinder supporting net is connected in the filter cartridge, and a filter screen layer is arranged outside the cylinder supporting net. A deslagging rotary drum is rotationally connected between the filter cartridge and the filter screen layer and comprises a connecting ring, a connecting disc and a plurality of spiral scraping blades connected between the connecting ring and the connecting disc; the filter cartridge is provided with a slag collecting groove communicated with the filter cartridge, a strip-shaped slag discharging opening is formed in the side, away from the filter cartridge, of the slag collecting groove, a rotating shaft is rotationally connected into the slag collecting groove, and a plurality of barrier strips are arranged outside the rotating shaft; a driving shell is arranged at one end of the filter cartridge, a first driving motor used for driving the deslagging rotating drum to rotate is mounted in the driving shell, and a second driving motor used for driving the rotating shaft to rotate is mounted in the driving shell. The liquid silica gel filter can effectively filter impurities in liquid silica gel, can automatically discharge the impurities, and is more convenient to use.

Description

TECHNICAL FIELD

[0001] The utility model belongs to silica gel filtering technical field relates to a filter for silica gel production. BACKGROUND

[0002] In liquid silicone injection molding process, although the silicone is widely used because of its excellent physical and chemical properties, but in the production process often encounter many challenges. These problems not only affect the product quality, but also cause negative effects on the equipment efficiency and overall production cost. Specifically, in actual production, liquid silicone injection molding will encounter product impurities, nozzle blockage, abnormal pressure of feeding system, short service life of barrel screw seal ring and frequent glue leakage and other problems. The root cause of these problems is that there are small particles, insufficiently dispersed fillers and other foreign impurities in the silicone raw materials. These impurities gather and accumulate in the silicone injection system, seriously hinder the flowability of the silicone, increase the resistance of the feeding system, and further cause pressure fluctuation, affect the dimensional accuracy of the product, and may cause additional mechanical stress to the injection molding machine.

[0003] At the same time, the silicone containing hard particles will cause wear to the seal ring when passing through the barrel and screw, shorten its service life, lead to the need for frequent replacement, and easily cause glue leakage problems, further affecting the production environment and product quality. In addition, as a result of the combined action of all the above factors, frequent equipment maintenance and component replacement are required, which increases the unplanned downtime, reduces the production efficiency, and increases the operating cost. Therefore, in order to ensure the smooth progress of the silicone injection molding process and the stable output of high-quality products, effective measures must be taken to purify the silicone raw materials and remove the harmful impurities contained therein. SUMMARY

[0004] The utility model discloses a filter for silica gel production, which can effectively filter impurities in liquid silicone, facilitate silicone injection molding, and automatically discharge impurities, making use more convenient.

[0005] To solve the above technical problems, the utility model provides a filter for silica gel production, which comprises a filter cartridge, an inlet connecting pipe opening is connected to the outer side of the filter cartridge, a liquid discharge connecting pipe opening is connected to one end of the filter cartridge, a cylindrical support net is connected in the filter cartridge, one end of the cylindrical support net facing the liquid discharge connecting pipe opening is connected with the inner wall of the filter cartridge, a filter mesh layer is arranged outside the cylindrical support net, a slag discharge rotating drum is rotatably connected between the filter cartridge and the filter mesh layer, the slag discharge rotating drum comprises a connecting ring, a connecting disc located away from the liquid discharge connecting pipe opening, and a plurality of spiral scrapers connected between the connecting ring and the connecting disc and sleeved on the filter mesh layer.

[0006] The outer side of the filter cartridge is provided with a slag collecting groove in communication with the filter cartridge and arranged along the length direction of the filter cartridge, the cross section of the slag collecting groove is U-shaped, a strip-shaped slag discharging port is arranged along the length direction of the slag collecting groove on the side of the slag collecting groove away from the filter cartridge, a rotating shaft is rotatably connected in the slag collecting groove and arranged along the length direction of the slag collecting groove, a plurality of blocking strips are arranged on the rotating shaft and can be sealingly and slidably connected with the inner wall of the slag collecting groove, and two blocking strips are always in contact with the inner wall of the slag collecting groove.

[0007] The filter cartridge is provided with a driving shell at the end of the filter cartridge away from the liquid discharging connecting pipe, a first driving motor for driving the slag discharging rotating drum to rotate is arranged in the driving shell, and a second driving motor is arranged in the driving shell, and the power output shaft of the second driving motor is connected with the rotating shaft.

[0008] By adopting the above technical scheme, the liquid inlet connecting pipe is connected with the pressurizing device, liquid silica gel is injected into the filter cartridge after being pressurized, the liquid silica gel is pressurized to pass through the filter screen layer in the filter cartridge, and finally is discharged through the liquid discharging connecting pipe in the cylindrical supporting net, in the process, the first driving motor drives the slag discharging rotating drum to rotate slowly, the impurities filtered on the surface of the filter screen layer are scraped off by the spiral scraping blade during the rotating process and move with the spiral scraping blade, enter the slag collecting groove after passing through the slag collecting groove, and gradually gather in the slag collecting groove and between the two blocking strips, and the second driving motor drives the rotating shaft to rotate by a certain angle at a regular time, so that after the two blocking strips collect the impurities, the rotating shaft is rotated to the strip-shaped slag discharging port, and the impurities can be discharged from the strip-shaped slag discharging port, and the impurities filtered are automatically discharged through the intermittent rotation cycle.

[0009] The utility model further sets up, connecting ring with the edge of connecting disc is connected with multiple support shafts that are circumferentially distributed, and each support shaft penetrates the spiral scraping blade.

[0010] The utility model further sets up, the aperture of the filter screen layer is 2-5 mu m.

[0011] The utility model further sets up, the outer side of the connecting disc is sealingly and rotatably connected with the inner wall of the filter cartridge, the connecting disc is connected with a worm wheel extending into the driving shell, and the power output shaft of the first driving motor is connected with a worm that is engaged with the worm wheel.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] Firstly, the utility model can effectively filter out impurities in liquid silica gel, significantly improve the purity of silica gel, facilitate silica gel injection molding, improve product quality, prolong the service life of injection molding equipment and reduce the maintenance frequency.

[0014] Secondly, during filtration, the rotating spiral scraper continuously removes the filtered impurities and collects them in the slag collection tank. Finally, the impurities are automatically discharged through the intermittent rotation of the two baffles, eliminating the need to disassemble the device for slag discharge, making it more convenient to use. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a partial sectional view used to show the internal structure of this utility model;

[0017] Figure 3 Used to demonstrate the positional relationship between the slag discharge drum, the filter screen layer, and the cylindrical support screen;

[0018] Figure 4 Used to display the strip-shaped slag discharge port at the bottom of the filter cartridge.

[0019] The components include: 1. Filter cylinder; 2. Liquid inlet connection port; 3. Liquid outlet connection port; 4. Cylindrical support mesh; 5. Filter mesh layer; 6. Connecting ring; 7. Connecting disc; 8. Spiral scraper; 9. Support shaft; 10. Slag collection tank; 11. Strip-shaped slag discharge port; 12. Rotating shaft; 13. Baffle bar; 14. Drive housing; 15. Worm gear; 16. First drive motor; 17. Worm; 18. Second drive motor. Detailed Implementation

[0020] The following detailed description, in conjunction with the accompanying drawings and specific embodiments, provides a further detailed explanation of a filter for silicone production according to this utility model. The advantages and features of this utility model will become clearer from the following description. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of this utility model. The same or similar reference numerals in the drawings represent the same or similar parts.

[0021] Example, refer to Figures 1-3A filter for silicone production includes a filter cartridge 1. An inlet pipe 2 is connected to the outer side of the filter cartridge 1, and the inlet pipe 2 is connected to a pressurizing device to inject liquid silicone into the filter cartridge 1 under pressure. A drain pipe 3 is connected to one end of the filter cartridge 1. A cylindrical support mesh 4 is connected inside the filter cartridge 1, with the end of the cylindrical support mesh 4 facing the drain pipe 3 connected to the inner wall of the filter cartridge 1. A filter mesh layer 5 is disposed outside the cylindrical support mesh 4, and the pore size of the filter mesh layer 5 is selected to be 2-5 μm. Impurities in the silica gel are filtered out by the filter screen layer 5. A slag discharge drum is rotatably connected between the filter cylinder 1 and the filter screen layer 5. The slag discharge drum includes a connecting ring 6, a connecting plate 7 located at the end away from the liquid discharge connection pipe 3, and four spiral scrapers 8 connected between the connecting ring 6 and the connecting plate 7 and covered by the filter screen layer 5. Multiple circumferentially distributed support shafts 9 are connected between the edges of the connecting ring 6 and the connecting plate 7. Each support shaft 9 passes through the spiral scrapers 8. The support shafts 9 increase the strength of the slag discharge drum and prevent deformation during rotation.

[0022] A slag collection trough 10 is provided on the outer side of the filter cylinder 1, communicating with it and extending along its length. The cross-section of the slag collection trough 10 is U-shaped. During the rotation of the spiral scraper 8, the impurities filtered off the surface of the filter screen layer 5 are gradually scraped off and enter the slag collection trough 10 as the spiral scraper 8 rotates. A strip-shaped slag discharge port 11 is provided on the side of the slag collection trough 10 away from the filter cylinder 1, extending along its length. A rotating shaft 12 is rotatably connected inside the slag collection trough 10, extending along its length. Four baffles 13 are provided outside the rotating shaft 12, which can be slidably and sealingly connected to the inner wall of the slag collection trough 10. Two baffles 13 are always in contact with the inner wall of the slag collection trough 10. The baffles 13 prevent liquid silica gel from being discharged from the strip-shaped slag discharge port 11 due to pressure. Rotating the rotating shaft 12 drives the baffles to rotate, allowing the impurities between the two baffles 13 to be discharged from the strip-shaped slag discharge port 11.

[0023] A drive housing 14 is provided at the end of the filter cylinder 1 away from the drain connection port 3. The outer side of the connecting plate 7 is rotatably connected to the inner wall of the filter cylinder 1. The connecting plate 7 is connected to a connecting shaft (not shown). The connecting shaft passes through the filter cylinder 1 and extends into the drive housing 14 to connect to a worm gear 15. A first drive motor 16 is installed in the drive housing 14. The power output shaft of the first drive motor 16 is connected to a worm 17 that meshes with the worm gear 15. A second drive motor 18 is installed in the drive housing 14. The power output shaft of the second drive motor 18 is connected to the rotating shaft 12.

[0024] Working principle: Connect the liquid inlet pipe 2 to the pressurizing device to inject liquid silica gel into the filter cylinder 1 under pressure. The liquid silica gel is pressurized and passes through the filter screen layer 5 in the filter cylinder 1, and is finally discharged through the drain pipe 3 in the cylindrical support mesh 4. During the process, the first drive motor 16 drives the slag discharge drum to rotate slowly. The spiral scraper 8 scrapes off the impurities filtered from the surface of the filter screen layer 5 during the rotation and moves with it. After passing through the slag collection tank 10, the impurities are gradually collected in the slag collection tank 10 and located between the two baffles. The second drive motor 18 drives the rotating shaft 12 to rotate at a certain angle at regular intervals. After the impurities are collected between the two baffles, the shaft rotates to the strip-shaped slag discharge port 11, and the impurities can be discharged from the strip-shaped slag discharge port 11. This intermittent rotation cycle automatically discharges the filtered impurities.

[0025] It should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0026] The above description is only a description of the preferred embodiment of the present utility model and is not intended to limit the scope of the present utility model in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of the claims.

Claims

1. A filter for silicone production, comprising a filter cartridge (1), characterized in that, The filter cylinder (1) is connected to an inlet pipe (2) on the outside and to a outlet pipe (3) on one end. A cylindrical support net (4) is connected inside the filter cylinder (1). The end of the cylindrical support net (4) facing the outlet pipe (3) is connected to the inner wall of the filter cylinder (1). A filter screen layer (5) is provided outside the cylindrical support net (4). A slag discharge rotating cylinder is rotatably connected between the filter cylinder (1) and the filter screen layer (5). The slag discharge rotating cylinder includes a connecting ring (6), a connecting plate (7) located away from the outlet pipe (3), and multiple spiral scrapers (8) connected between the connecting ring (6) and the connecting plate (7) and covered by the filter screen layer (5). The filter cylinder (1) is provided with a slag collection trough (10) on its outer side, which is connected to it and arranged along its length. The slag collection trough (10) has a U-shaped cross section. A strip-shaped slag discharge port (11) is provided on the side of the slag collection trough (10) away from the filter cylinder (1) along its length. A rotating shaft (12) is rotatably connected inside the slag collection trough (10) along its length. Multiple baffles (13) are provided outside the rotating shaft (12) that can be slidably and sealingly connected to the inner wall of the slag collection trough (10). Two baffles (13) are always in contact with the inner wall of the slag collection trough (10). The filter cylinder (1) is provided with a drive housing (14) at one end away from the drain connection port (3). A first drive motor (16) for driving the slag discharge drum to rotate is installed in the drive housing (14). A second drive motor (18) is installed in the drive housing (14). The power output shaft of the second drive motor (18) is connected to the rotating shaft (12).

2. The filter for silicone production according to claim 1, characterized in that, Multiple circumferentially distributed support shafts (9) are connected between the edge of the connecting ring (6) and the edge of the connecting disk (7), and each support shaft (9) passes through the spiral scraper (8).

3. A filter for silicone production according to claim 1, characterized in that, The pore size of the filter layer (5) is 2-5 μm.

4. A filter for silicone production according to claim 1, characterized in that, The outer side of the connecting disc (7) is rotatably and sealed to the inner wall of the filter cylinder (1). The connecting disc (7) is connected to a worm gear (15) that extends into the drive housing (14). The power output shaft of the first drive motor (16) is connected to a worm (17) that meshes with the worm gear (15).

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