Filtering treatment device for silane coupling agent production

Abstract

The invention relates to the technical field of coupling agent production, and discloses a filtering treatment device for silane coupling agent production, which comprises a stirring tank with a self-heating function, a double-layer filtering device is arranged in the stirring tank, the inner-layer filtering aperture of the double-layer filtering device is larger than the outer-layer filtering aperture, a stirring motor is arranged at the top of the stirring tank, and the stirring motor is connected with the stirring tank. The stirring motor is used for driving the stirring blades to rotate and driving the inner layer of the double-layer filtering device to rotate through the transmission part, the filtering part of the inner layer of the double-layer filtering device is in contact with the filtering part of the outer layer of the double-layer filtering device, a discharging pipe is arranged at a discharging opening in the bottom of the stirring tank, and the middle of the discharging pipe is communicated with a backflow pipe. The stirring motor drives the stirring blades to rotate, meanwhile, the transmission part drives the limiting ring to rotate, the inner filter cylinder rotates, at the moment, the second cylindrical framework continuously scrapes the inner side wall of the first filter screen, the effect of scraping away impurities attached to the inner side wall of the first filter screen is achieved, and the blocking probability of the first filter screen is further reduced.

Description

Technical Field

[0001] The invention relates to the technical field of coupling agent production, in particular to a filtering treatment device for silane coupling agent production. Background Art

[0002] In the production process of silane coupling agents, filtration is the key link to remove reaction by-products, unreacted raw materials and impurities. At the same time, its reaction by-products and impurities are not produced all at once, but are continuously generated during the production process.

[0003] The existing filtration technology is to transfer the coupling agent after mixing to an independent filtration device for unified filtration. During this filtration process, due to the different particle sizes of impurities, large particles of impurities easily cause clogging of small-pore filters, and some impurities are colloids, which increases the probability of filtration clogging. At the same time, the water flow pressure of traditional backwashing equipment is constant, which makes it difficult to remove deep impurities in the filter, resulting in low backwashing efficiency. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a filtering treatment device for the production of silane coupling agents, which solves the problems of easy clogging and low backwashing efficiency of the prior filtering devices.

[0005] To achieve the above purpose, the present invention is implemented through the following technical scheme: a filtering and processing device for silane coupling agent production, comprising a stirring tank with a self-heating function, a double-layer filtering device is arranged in the stirring tank, the inner filter aperture of the double-layer filtering device is larger than the outer filter aperture, a stirring motor is arranged on the top of the stirring tank, the stirring motor is used to drive the stirring blade to rotate, and drive the inner layer of the double-layer filtering device to rotate through a transmission component, the inner filter portion of the double-layer filtering device is in contact with the outer filter portion, and the bottom discharge port of the stirring tank is A discharge pipe is arranged at the mixing tank, and a reflux pipe is connected to the middle of the discharge pipe. Electric control valves are arranged on the pipe bodies of both pipes. The upper opening of the reflux pipe extends to the feeding port of the mixing tank. A transverse pipe is connected to the bottom of the discharge pipe. Pressurizing devices are arranged on both sides of the transverse pipe. The pressurizing devices are used to drive the material to return to the mixing tank through the reflux pipe and to increase the flushing water pressure of backwashing. A turning mechanism is arranged at the bottom of the mixing tank. When backwashing is performed, the turning mechanism drives the mixing tank to turn over and tip over, so that the flushing water and impurities in the backwashing process are discharged from the feeding port of the mixing tank.

[0006] Preferably, the double-layer filtering device includes an outer filtering cylinder and an inner filtering cylinder. The outer filtering cylinder includes a cylindrical frame one, and a first filter net is covered and fixedly connected inside the cylindrical frame one. The outer wall of the cylindrical frame one is fixedly connected to the inner wall of the stirring tank, so that a gap is formed between the first filter net and the inner wall of the stirring tank. The inner filtering cylinder is sleeved inside the outer filtering cylinder. The inner filtering cylinder includes a limiting ring. A cylindrical frame two is fixedly connected to the bottom wall of the limiting ring. A second filter net is covered and fixedly connected inside the cylindrical frame two. The outer wall of the cylindrical frame two is smoothly arranged and is in contact with the first filter net. The bottom wall of the limiting ring is rotatably connected to the top wall of the stirring tank, and an external gear is embedded and fixedly connected in the middle of the limiting ring.

[0007] Preferably, the aperture of the first filter net is larger than that of the second filter net.

[0008] Preferably, both the first filter net and the second filter net are made of shape memory alloy materials. When the stirring tank is in a heating state, the first filter net and the second filter net are heated to trigger the aperture contraction state. When backwashing, the first filter net and the second filter net come into contact with the washing water and cool down, triggering the aperture expansion state.

[0009] Preferably, a cover plate is arranged at the upper opening of the stirring tank. The cover plate is fixedly connected to the outer side wall of the stirring tank through a first side bracket. An installation frame is fixedly connected to the top wall of the cover plate. The outer wall of the stirring motor is fixedly connected to the top of the installation frame. The top end of the rotating shaft of the stirring paddle passes through the cover plate and is rotatably connected thereto. The output end of the stirring motor is fixedly connected to the top end of the rotating shaft of the stirring paddle. The rotating shaft of the stirring paddle is located on the central axis of the inner filtering cylinder.

[0010] Preferably, the transmission component includes a transmission shaft. The bottom of the transmission shaft is rotatably connected to a first support frame. One side wall of the first support frame is fixedly connected to the outer wall of the stirring tank. The top of the transmission shaft is rotatably connected to a second support frame. The bottom wall of the second support frame is fixedly connected to the upper surface of the cover plate. A first gear is sleeved and fixedly connected to the lower part of the transmission shaft, and a first sprocket is sleeved and fixedly connected to the upper part. The first sprocket is coupled to a second sprocket through a chain. The center of the second sprocket is sleeved and fixedly connected to the top of the rotating shaft of the stirring paddle. The tooth ends of the first gear are meshed with the tooth ends of the external gear.

[0011] Preferably, the pressurizing device includes a cross-connecting cylinder. One end of the cross-connecting cylinder is a cylindrical structure, and the other end is a conical structure. Its conical structure end is connected to the horizontal pipe. The cylindrical structure end is rotatably connected to a pressurizing cylinder. The central axes of the cross-connecting cylinder, the horizontal pipe, and the pressurizing cylinder coincide. A piston is arranged inside the pressurizing cylinder. An electric push rod is fixedly connected to the side wall of the piston. The piston is driven to move inside the pressurizing cylinder through the electric push rod. By changing the space between the piston and the cross-connecting cylinder, the pressure inside the horizontal pipe is changed.

[0012] Preferably, the flipping mechanism includes a first base. An arc surface is provided on the upper part of the first base. An arc-shaped slideway is formed in the arc surface. A base platform slides on the arc surface. The bottom of the base platform is embedded and slidably connected in the arc-shaped slideway. Legs are fixedly connected to both sides of the upper surface of the base platform. The upper parts of the legs are fixedly connected to the outer wall of the mixing tank through a base. The center of the rear side of the first base is rotatably connected to a cylinder. The output end of the cylinder is rotatably connected to the center of the base platform. The base platform is driven by the cylinder to move along the arc-shaped slideway, and the central axis of the moving track of the base platform coincides with the central axis of the horizontal pipe. The cross-connecting cylinder penetrates and is fixedly connected to the lower part of the leg.

[0013] Preferably, a second base is fixedly connected to the outer wall of the pressurizing cylinder. One side of the second base is fixedly connected to the side wall of the first base, and the upper part of the other side is fixedly connected to a second side bracket. The upper part of the second side bracket is fixedly connected to the outer cylinder wall of the electric push rod.

[0014] Preferably, a material output pipe and a backwash pipe are respectively communicated with the horizontal pipe. The material output pipe is used for outputting the filtered material. The backwash pipe is connected to a backwash device. Electric control valves are arranged on the pipe body of the material output pipe and the pipe body of the backwash pipe.

[0015] The present invention provides a filtering and processing device for the production of silane coupling agents. It has the following beneficial effects: 1. Through the cooperation of the double-layer filtering device, the reflux pipe and the pressurizing device, the impurities continuously precipitated during the production process are continuously filtered, thereby improving the filtering efficiency. The aperture of the first filter screen is larger than that of the second filter screen, so that the impurities with larger particle sizes are retained in the inner filter cylinder, and the impurities with smaller particle sizes are retained in the outer filter cylinder, thus avoiding the blockage of the filter screen with a small aperture by the impurities with larger particle sizes. The stirring motor drives the stirring paddle to rotate, and at the same time drives the limiting ring to rotate through the transmission component, so that the inner filter cylinder rotates. At this time, the cylindrical frame two continuously slides across the inner side wall of the first filter screen, playing a role in scraping the impurities adhering to the inner side wall of the first filter screen, further reducing the blockage probability of the first filter screen.

[0016] 2. In the present invention, the process of the reflux of the mixed raw materials is realized through the pressurizing device, so that the raw materials are continuously discharged and refluxed, and the position of the raw materials in the mixing tank 1 continuously changes greatly, further improving the mixing effect.

[0017] 3. The present invention adopts a piston-type pressurizing device driven by an electric push rod to generate pulsed water pressure, combined with the flipping and pouring of the mixing tank, greatly improving the backwashing efficiency and effect. At the same time, the first filter screen and the second filter screen are prepared by using shape memory alloy, and the dynamic contraction and expansion of the aperture are realized through the austenite-martensite phase transformation triggered by temperature, greatly increasing the probability of the impurities detaching from the filter screen, and thus greatly improving the backwashing effect. Description of the Drawings

[0018] Figure 1 is the front orthographic stereogram of the present invention; Figure 2 is Figure 1 the enlarged view at position A in Figure 3 is Figure 1 the enlarged view at position B in Figure 4 is the rear orthographic stereogram of the present invention; Figure 5 is Figure 4 the enlarged view at position C in Figure 6 is the schematic diagram of the position of the horizontal pipe in the present invention; Figure 7 is the schematic diagram of the internal structure of the mixing tank in the present invention; Figure 8 is the schematic diagram of the internal structure of the pressure cylinder in the present invention.

[0019] Wherein, 1, mixing tank; 2, mixing motor; 3, mixing paddle; 4, discharge pipe; 5, return pipe; 6, horizontal pipe; 7, outer filter cylinder; 701, cylindrical frame one; 702, filter screen one; 8, inner filter cylinder; 801, limit ring; 802, cylindrical frame two; 803, filter screen two; 804, external gear; 9, cover plate; 10, side bracket one; 11, mounting frame; 12, transmission shaft; 13, support frame one; 14, support frame two; 15, gear one; 16, sprocket one; 17, chain; 18, sprocket two; 19, cross-connecting cylinder; 20, pressure cylinder; 21, piston; 22, electric push rod; 23, base one; 2301, arc surface; 2302, arc slideway; 24, base platform; 25, support leg; 26, base; 27, air cylinder; 28, base two; 29, side bracket two; 30, material output pipe; 31, backwash pipe. Specific embodiments

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0021] Please refer to the attached Figure 1 - attached Figure 8, an embodiment of the present invention provides a filtering and processing device for the production of silane coupling agents, including a stirring tank 1 with a self-heating function. A double-layer filtering device is arranged in the stirring tank 1. The inner filtering aperture of the double-layer filtering device is larger than the outer filtering aperture. A stirring motor 2 is arranged at the top of the stirring tank 1. The stirring motor 2 is used to drive the stirring paddle 3 to rotate and drive the inner layer of the double-layer filtering device to rotate through a transmission component. The inner filtering part and the outer filtering part of the double-layer filtering device are in contact with each other. A discharge pipe 4 is arranged at the discharge port at the bottom of the stirring tank 1. A reflux pipe 5 is communicated in the middle of the discharge pipe 4. Electric control valves are arranged on the pipe bodies of both of them. The upper opening of the reflux pipe 5 extends into the feeding port of the stirring tank 1. The bottom of the discharge pipe 4 is communicated with a horizontal pipe 6. Pressurizing devices are respectively arranged on both sides of the horizontal pipe 6. The pressurizing devices are used to drive the material to return to the stirring tank 1 through the reflux pipe 5 and are used to increase the flushing water pressure during backwashing. A turnover mechanism is arranged at the bottom of the stirring tank 1. When backwashing is carried out, the turnover mechanism drives the stirring tank 1 to turn over and pour, so that the flushing water and impurities during backwashing are discharged from the feeding port of the stirring tank 1.

[0022] The double-layer filtering device includes an outer filtering cylinder 7 and an inner filtering cylinder 8. The outer filtering cylinder 7 includes a cylindrical skeleton one 701. A filter screen one 702 is covered and fixedly connected inside the cylindrical skeleton one 701. The outer wall of the cylindrical skeleton one 701 is fixedly connected to the inner wall of the stirring tank 1, so that a space is formed between the filter screen one 702 and the inner wall of the stirring tank 1. The inner filtering cylinder 8 is sleeved inside the outer filtering cylinder 7. The inner filtering cylinder 8 includes a limiting ring 801. The bottom wall of the limiting ring 801 is fixedly connected to a cylindrical skeleton two 802. A filter screen two 803 is covered and fixedly connected inside the cylindrical skeleton two 802. The outer wall of the cylindrical skeleton two 802 is smoothly arranged and is in contact with the filter screen one 702. The bottom wall of the limiting ring 801 is rotatably connected to the top wall of the stirring tank 1, and an outer gear 804 is embedded and fixedly connected in the middle of the limiting ring 801. The aperture of the filter screen one 702 is larger than the aperture of the filter screen two 803.

[0023] A material output pipe 30 and a backwashing pipe 31 are also respectively communicated with the horizontal pipe 6. The material output pipe 30 is used to output the filtered material. The backwashing pipe 31 is connected to a backwashing device. Electric control valves are arranged on the pipe bodies of the material output pipe 30 and the backwashing pipe 31.

[0024] When producing silane coupling agent, the raw materials are injected into the stirring tank 1, and then the stirring impeller 3 is driven by the stirring motor 2 to stir and mix the raw materials. At this time, the impurities in the mixed raw materials are filtered by the double-layer filtering device and then output through the discharge pipe 4. The mixed raw materials output by the driving of the pressurizing device flow back into the stirring tank 1 again and are filtered by the double-layer filtering device again. This process is repeated, so that the continuously precipitated impurities during the production process are continuously filtered, and finally a highly pure silane coupling agent is obtained. The double-layer filtering device adopts an outer filtering cylinder 7 and an inner filtering cylinder 8 which are sleeved with each other. Among them, the cylindrical frame one 701 of the outer filtering cylinder 7 is fixedly connected to the inner wall of the stirring tank 1. At the same time, a first filter screen 702 is coated inside the cylindrical frame one 701, so that the cylindrical frame one 701 is located between the inner wall of the stirring tank 1 and the first filter screen 702. At the same time, the cylindrical frame one 701 is of a hollow structure, so that a space is formed between the inner wall of the stirring tank 1 and the first filter screen 702. The mixed raw materials in the outer filtering cylinder 7 enter the stirring tank 1 through this space after being filtered by the first filter screen 702. Similarly, the inner filtering cylinder 8 is sleeved inside the outer filtering cylinder 7. The cylindrical frame two 802 of the inner filtering cylinder 8 is in contact with the inner side of the first filter screen 702. At the same time, a second filter screen 803 is coated on the inner wall of the cylindrical frame two 802. Then a space is also formed between the first filter screen 702 and the second filter screen 803 under the support of the cylindrical frame two 802. The mixed raw materials in the inner filtering cylinder 8 enter the outer filtering cylinder 7 through this space after being filtered by the second filter screen 803. At the same time, the aperture of the first filter screen 702 is larger than that of the second filter screen 803, so that the impurities with larger particle sizes are left in the inner filtering cylinder 8, and the impurities with smaller particle sizes are left in the outer filtering cylinder 7, thus avoiding the blockage of the small-aperture first filter screen 702 by the impurities with larger particle sizes. At the same time, the limiting ring 801 is rotatably connected to the top wall of the stirring tank 1. While the stirring motor 2 drives the stirring impeller 3 to rotate, the limiting ring 801 is driven to rotate through the transmission component, so that the inner filtering cylinder 8 rotates. At this time, the cylindrical frame two 802 continuously slides across the inner side wall of the first filter screen 702, playing a role in scraping the impurities adhering to the inner side wall of the first filter screen 702, and further reducing the blocking probability of the first filter screen 702.

[0025] At the same time, during the process of realizing the reflux of the mixed raw materials through the pressurizing device, the raw materials are continuously discharged and refluxed, so that the position of the raw materials in the stirring tank 1 changes greatly continuously, further improving the mixing effect.

[0026] It should be noted that the pressurizing device not only drives the reflux of the mixed raw materials, but also participates in the backwashing step. When backwashing, the washing water enters the horizontal pipe 6 from the backwashing pipe 31, and under the action of water pressure, enters the stirring tank 1 from the discharge pipe 4 for reverse flushing to remove the residual impurities in the stirring tank 1, the outer filter cylinder 7 and the inner filter cylinder 8. Under the action of the pressurizing device, the washing water entering the horizontal pipe 6 is pressurized, thereby increasing the washing water pressure and improving the backwashing effect. At the same time, since the pressurizing device adopts the piston 21 driving method, during the reciprocating movement of the piston 21, the actual output pressure is in the form of a pulse, and the washing water in the stirring tank 1 is repeatedly disturbed. Compared with the water flow with a constant pressure, the water flow in the form of a pulse has a better washing effect.

[0027] Both the first filter net 702 and the second filter net 803 are made of shape memory alloy materials. When the stirring tank 1 is in the heating state, the first filter net 702 and the second filter net 803 are triggered to shrink in aperture. When backwashing, the first filter net 702 and the second filter net 803 come into contact with the washing water and cool down, triggering the aperture to expand.

[0028] The shape memory alloy (SMA) filter net is an intelligent filtration technology based on the dynamic response characteristics of SMA. Its core lies in using the phase change behavior (austenite-martensite transformation) of SMA to realize the self-adaptive adjustment of the filter net aperture, thereby optimizing the filtration efficiency and solving problems such as easy clogging and frequent maintenance of traditional filter materials. Specifically: The filter net body is made of nickel-titanium-based (Ni-Ti) shape memory alloy, and its advantages include: It can withstand strains up to 8% without permanent deformation within the phase change temperature range, adapting to dynamic filtration scenarios.

[0029] Through thermal cycling (heating / cooling), it can present preset aperture morphologies at high temperature (austenite phase) and low temperature (martensite phase) respectively.

[0030] It is suitable for acidic, alkaline or high-temperature fluid environments and is corrosion-resistant.

[0031] Its manufacturing process is as follows: The porous SMA filter material is prepared by argon protection sintering process, and the porosity (30%-50%) and average pore diameter (10-50μm) are adjusted by controlling the sintering temperature (such as 980°C) and time (8-12 hours); Elements such as Cu and Al are added to improve the phase change temperature range of the alloy to make it suitable for different application scenarios; A pH-responsive polymer (such as a coating containing carboxyl / amino groups) is coated on the surface of the SMA filter net to enhance the selective adsorption of heavy metal ions; Increase the surface micro-nano structure through chemical etching or laser processing to improve the interception efficiency and anti-pollution ability.

[0032] Through the above scheme, When the normal stirring and filtering process is carried out, the filter screen 702 contacts the mixed raw material fluid with a higher temperature with the filter screen 803. The SMA changes from martensite to austenite, the pore diameter shrinks, and the interception rate of micro-particles is improved.

[0033] When the backwashing step is carried out, the filter screen 702 contacts the cooling flushing water with the filter screen 803, restores the martensite phase, the pore diameter expands, the fluid resistance is reduced and the backwashing is facilitated.

[0034] A cover plate 9 is arranged at the upper opening of the stirring tank 1. The cover plate 9 is fixedly connected to the outer wall of the stirring tank 1 through the side bracket 10. The top wall of the cover plate 9 is fixedly connected with a mounting frame 11. The outer wall of the stirring motor 2 is fixedly connected to the top of the mounting frame 11. The top end of the rotating shaft of the stirring paddle 3 penetrates through the cover plate 9 and is rotatably connected thereto. The output end of the stirring motor 2 is fixedly connected to the top end of the rotating shaft of the stirring paddle 3. The rotating shaft of the stirring paddle 3 is located on the central axis of the inner filter cylinder 8.

[0035] The stirring paddle 3 is driven to rotate by the stirring motor 2 to stir and mix the mixed raw materials in the stirring tank 1 and promote its reaction process.

[0036] At the same time, when backwashing is carried out, the flipping mechanism is used to drive the stirring tank 1 to flip and pour, so that the flushing water and impurities in the backwashing process are discharged from the feeding port of the stirring tank 1, improving the discharge efficiency of the impurities and further enhancing the backwashing effect.

[0037] The transmission component includes a transmission shaft 12. The bottom of the transmission shaft 12 is rotatably connected with a support frame 13. The side wall of the support frame 13 is fixedly connected to the outer wall of the stirring tank 1. The top of the transmission shaft 12 is rotatably connected with a support frame 14. The bottom wall of the support frame 14 is fixedly connected to the upper surface of the cover plate 9. A gear 15 is sleeved and fixedly connected to the lower part of the transmission shaft 12, and a sprocket 16 is sleeved and fixedly connected to the upper part. The sprocket 16 is coupled with a sprocket 18 through a chain 17. The center of the sprocket 18 is sleeved and fixedly connected to the top of the rotating shaft of the stirring paddle 3. The tooth end of the gear 15 meshes with the tooth end of the external gear 804.

[0038] While the stirring motor 2 drives the stirring paddle 3 to rotate, the sprocket 18 drives the sprocket 16 to rotate, thereby realizing the gear 15 driving the limit ring 801 with the external gear 804 to rotate, and finally realizing the rotation of the inner filter cylinder 8.

[0039] The pressurizing device includes a crossover cylinder 19. One end of the crossover cylinder 19 is of a cylindrical structure, and the other end is of a conical structure. The conical structure end is connected to the horizontal pipe 6, and the cylindrical structure end is rotatably connected to a pressurizing cylinder 20. The central axes of the crossover cylinder 19, the horizontal pipe 6, and the pressurizing cylinder 20 coincide. A piston 21 is arranged in the pressurizing cylinder 20. A side wall of the piston 21 is fixedly connected to an electric push rod 22. The piston 21 is driven by the electric push rod 22 to move in the pressurizing cylinder 20. By changing the space between the piston 21 and the crossover cylinder 19, the pressure in the horizontal pipe 6 is changed. An outer wall of the pressurizing cylinder 20 is fixedly connected to a second base 28. One side of the second base 28 is fixedly connected to a side wall of the first base 23, and the upper part of the other side is fixedly connected to a second side bracket 29. The upper part of the second side bracket 29 is fixedly connected to an outer cylinder wall of the electric push rod 22.

[0040] The piston 21 is driven by the electric push rod 22 to move in the pressurizing cylinder 20, so that the space between the piston 21 and the crossover cylinder 19 is changed, thereby realizing the pressurizing function. Of course, according to actual needs, a two-way pressure relief valve can also be arranged on the pressurizing cylinder 20 to prevent the electric push rod 22 from operating overloaded.

[0041] The flipping mechanism includes a first base 23. An arc surface 2301 is arranged on the upper part of the first base 23. An arc-shaped slideway 2302 is arranged in the arc surface 2301. A base platform 24 slides on the arc surface 2301. The bottom of the base platform 24 is embedded and slidably connected in the arc-shaped slideway 2302. Both sides of the upper surface of the base platform 24 are fixedly connected to support legs 25. The upper parts of the support legs 25 are fixedly connected to an outer wall of the mixing tank 1 through a base 26. The center of the rear side of the first base 23 is rotatably connected to a cylinder 27. An output end of the cylinder 27 is rotatably connected to the center of the base platform 24. The base platform 24 is driven by the cylinder 27 to move along the arc-shaped slideway 2302, and the central axis of the moving track of the base platform 24 coincides with the central axis of the horizontal pipe 6. The crossover cylinder 19 penetrates and is fixedly connected to the lower parts of the support legs 25.

[0042] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirits of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A filtering treatment device for producing a silane coupling agent, comprising a stirring tank (1) with a self-heating function, characterized in that: The stirring tank (1) is provided with a double-layer filtering device, wherein the inner filter aperture of the double-layer filtering device is larger than the outer filter aperture, a stirring motor (2) is provided on the top of the stirring tank (1), the stirring motor (2) is used to drive the stirring blade (3) to rotate, and drive the inner layer of the double-layer filtering device to rotate through a transmission component, the inner filter portion of the double-layer filtering device is in contact with the outer filter portion, a discharge pipe (4) is provided at the discharge port at the bottom of the stirring tank (1), the middle of the discharge pipe (4) is connected to a reflux pipe (5), and both pipe bodies are provided with An electric control valve is arranged, the upper opening of the return pipe (5) extends into the feeding port of the stirring tank (1), the bottom of the discharge pipe (4) is connected to a transverse pipe (6), and pressure devices are arranged on both sides of the transverse pipe (6), the pressure devices are used to drive the material to return from the return pipe (5) into the stirring tank (1), and at the same time to increase the flushing water pressure of backwashing, and a turning mechanism is arranged at the bottom of the stirring tank (1), when backwashing is carried out, the turning mechanism drives the stirring tank (1) to turn over and tilt, so that the flushing water and impurities in the backwashing process are discharged from the feeding port of the stirring tank (1).

2. A filtering treatment device for producing silane coupling agents according to claim 1, characterized in that: The double-layer filtering device comprises an outer filter cartridge (7) and an inner filter cartridge (8), the outer filter cartridge (7) comprising a cylindrical frame (701), a filter screen (702) enclosed and fixedly connected inside the cylindrical frame (701), the outer wall of the cylindrical frame (701) being fixedly connected to the inner wall of the stirring tank (1), so that a gap is formed between the filter screen (702) and the inner wall of the stirring tank (1), the inner filter cartridge (8) being sleeved inside the outer filter cartridge (7), the inner filter cartridge (8) It comprises a limiting ring (801), the bottom wall of which is fixedly connected to a cylindrical frame 2 (802), a filter screen 2 (803) is coated and fixedly connected inside the cylindrical frame 2 (802), the outer wall of the cylindrical frame 2 (802) is smoothly arranged and in close contact with the filter screen 1 (702), the bottom wall of the limiting ring (801) is rotatably connected to the top wall of the stirring tank (1), and an external gear (804) is embedded in and fixedly connected to the middle of the limiting ring (801).

3. A filtering treatment device for producing silane coupling agents according to claim 2, characterized in that: The aperture of the filter screen 1 (702) is larger than the aperture of the filter screen 2 (803).

4. A filtering treatment device for producing silane coupling agents according to claim 2, characterized in that: The filter screen 1 (702) and the filter screen 2 (803) are both made of shape memory alloy material. When the stirring tank (1) is in a heated state, the filter screen 1 (702) and the filter screen 2 (803) are heated to trigger an aperture contraction state. When backwashing, the filter screen 1 (702) and the filter screen 2 (803) are in contact with the flushing water to cool down, triggering an aperture expansion state.

5. A filtering treatment device for producing silane coupling agents according to claim 2, characterized in that: A cover plate (9) is provided at the upper opening of the stirring tank (1); the cover plate (9) is fixedly connected to the outer wall of the stirring tank (1) via a side bracket (10); a mounting frame (11) is fixedly connected to the top wall of the cover plate (9); the outer wall of the stirring motor (2) is fixedly connected to the top of the mounting frame (11); the top end of the rotating shaft of the stirring blade (3) passes through the cover plate (9) and is rotatably connected thereto; the output end of the stirring motor (2) is fixedly connected to the top end of the rotating shaft of the stirring blade (3); and the rotating shaft of the stirring blade (3) is located on the central axis of the inner filter cartridge (8).

6. A filtering treatment device for producing silane coupling agents according to claim 5, characterized in that: The transmission component comprises a transmission shaft (12), the bottom of the transmission shaft (12) is rotatably connected to a support frame 1 (13), the side wall of the support frame 1 (13) is fixedly connected to the outer wall of the stirring tank (1), the top of the transmission shaft (12) is rotatably connected to a support frame 2 (14), the bottom wall of the support frame 2 (14) is fixedly connected to the upper surface of the cover plate (9), the lower part of the transmission shaft (12) is sleeved and fixedly connected to a gear 1 (15), and the upper part is sleeved and fixedly connected to a sprocket 1 (16), the sprocket 1 (16) is coupled to the sprocket 2 (18) through a chain (17), the center of the sprocket 2 (18) is sleeved and fixedly connected to the top of the rotating shaft of the stirring blade (3), and the tooth end of the gear 1 (15) is meshed with the tooth end of the external gear (804).

7. The filtering treatment device for producing silane coupling agent according to claim 1, characterized in that: The pressurizing device comprises a jumper tube (19), one end of the jumper tube (19) is a cylindrical structure, and the other end is a conical structure, one end of the conical structure is connected to the transverse tube (6), and one end of the cylindrical structure is rotatably connected to a pressurizing tube (20), the central axis of the jumper tube (19), the central axis of the transverse tube (6) and the central axis of the pressurizing tube (20) coincide, a piston (21) is arranged in the pressurizing tube (20), and the side wall of the piston (21) is fixedly connected to an electric push rod (22), the piston (21) is driven by the electric push rod (22) to move in the pressurizing tube (20), and the pressure in the transverse tube (6) is changed by changing the space between the piston (21) and the jumper tube (19).

8. A filtering treatment device for producing silane coupling agents according to claim 7, characterized in that: The flip mechanism comprises a base (23), the upper part of the base (23) is provided with an arc surface (2301), the arc surface (2301) is provided with an arc slideway (2302), a base (24) is slidably disposed on the arc surface (2301), the bottom of the base (24) is embedded in and slidably connected to the arc slideway (2302), both sides of the upper surface of the base (24) are fixedly connected with legs (25), and the upper part of the legs (25) is connected to the base (24). The base (26) is fixedly connected to the outer wall of the mixing tank (1); the rear center of the base (23) is rotatably connected to a cylinder (27); the output end of the cylinder (27) is rotatably connected to the center of the base (24); the base (24) is driven by the cylinder (27) to move along the arc-shaped slideway (2302); and the central axis of the movement trajectory of the base (24) coincides with the central axis of the cross tube (6); and the jumper tube (19) passes through and is fixedly connected to the lower part of the support leg (25).

9. A filtering treatment device for producing silane coupling agents according to claim 7, characterized in that: The outer wall of the pressurizing cylinder (20) is fixedly connected to a second base (28), one side of the second base (28) is fixedly connected to the side wall of the first base (23), and the upper part of the other side is fixedly connected to a second side bracket (29), and the upper part of the second side bracket (29) is fixedly connected to the outer cylinder wall of the electric push rod (22).

10. The filtering treatment device for producing silane coupling agent according to claim 1, characterized in that: The transverse pipe (6) is also connected to a material output pipe (30) and a backwash pipe (31), respectively. The material output pipe (30) is used to output filtered material, and the backwash pipe (31) is connected to a backwash device. The material output pipe (30) and the backwash pipe (31) are both provided with electric control valves.

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