Molecular sieve coating device and coating method thereof
By designing a molecular sieve coating device, using wool and airflow injection technology, the problem of fluid flow extrusion of the pores of the substrate fabric is solved, the load of the molecular sieve and the adsorption capacity of the substrate is improved, and the drying effect is achieved.
Patent Information
- Application Number
- CN202411865417.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-18
- Publication Date
- 2025-03-11
AI Technical Summary
In the existing molecular sieve coating technology, the fluid has stronger fluidity, which makes it difficult for molecular sieve particles to enter the inner pores of the substrate fabric, reducing the molecular sieve load of the substrate.
A molecular sieve coating device is designed, including a substrate conveying mechanism, a pretreatment mechanism, an injection mechanism, a drying mechanism and an immersion coating mechanism. The surface of the substrate cloth is woven by a woven rod to expose more pores, and the molecular sieve particles are injected into the pores using airflow to prevent the fluid flow from extruding the pores.
The load of the molecular sieve is increased, the adsorption capacity of the substrate is enhanced, and the drying effect is achieved through exhaust gas recovery and heating, simplifying the structure and reducing energy consumption.
Smart Images
Figure CN119588304A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of molecular sieve processing, in particular to a molecular sieve coating device and a coating method thereof. Background Art
[0002] There are three common ways to coat molecular sieves, namely, leaching, spraying, and dipping. All three methods can retain the molecular sieve on the surface of the substrate cloth very well. However, no matter which of the three methods is used, the molecular sieve particles need a fluid as a carrier to disperse and transport the molecular sieve to the surface of the substrate cloth. However, the pores slightly hidden inside the substrate cloth will be occupied by the fluid before the molecular sieve particles due to the stronger fluidity of the fluid. In this way, the molecular sieve particles can only be retained on the surface, thereby reducing the molecular sieve loading capacity of the substrate, which is not conducive to improving the adsorption capacity. Summary of the invention
[0003] In order to solve the above problems, the present invention provides a molecular sieve coating device and a coating method thereof to solve the above problems.
[0004] To achieve the above object, the present invention provides the following technical solutions: A molecular sieve coating device comprises a substrate conveying mechanism, a pretreatment mechanism, an injection mechanism, a drying mechanism and an immersion coating mechanism. The substrate conveying mechanism includes a triangular roller group, the triangular roller group includes roller one, roller two, and roller three, wherein the substrate cloth is unwound in a manner of passing over roller two, under roller three, and over roller one; The pretreatment mechanism includes a roughening rod attached between the first roller and the second roller, and a vibrating part driving the roughening rod to vibrate axially; The injection mechanism comprises a curved pipe located downstream of the triangular roller group, the curved pipe having a horizontal section and a vertical section, wherein one end of the horizontal section is connected to the wind mixing part, and one end of the vertical section is connected to the horn cover 1; The drying mechanism includes a recovery portion aligned with and located below the horn cover, and a heating portion located downstream of the horn cover, wherein the heating portion is connected to the recovery portion; and, The immersion coating mechanism includes a box body disposed between the horn cover and the heating part, a stirring shaft rotatably disposed inside the box body, and a scraping part disposed on one side above the box body; As a preferred embodiment of the present invention, the roughening rod roughens the surface of the substrate cloth by rotation and vibration to expose more of its internal pores, and the injection mechanism injects the mixed molecular sieve particles into the pores using airflow, and then the substrate cloth is subjected to molecular sieve impregnation coating by the impregnation coating mechanism, wherein the exhaust gas is recovered and heated by the drying mechanism to subsequently dry the substrate cloth, and by filling the pores of the molecular sieve particles prior to the impregnation coating, the situation in which the more fluid slurry liquid phase occupies the internal pores of the substrate cloth during the impregnation coating is avoided, thereby increasing the loading capacity of the molecular sieve.
[0005] As a preferred solution of the present invention, the substrate conveying mechanism further includes a horizontal tensioning roller group 1 located downstream of the triangular roller group, a horizontal tensioning roller group 2 located downstream of the horizontal tensioning roller group 1, and a sinking guide roller located between the horizontal tensioning roller group 1 and the horizontal tensioning roller group 2; Wherein, the horizontal tensioning roller set 1 includes a roller 4 arranged on one side of the horn cover 1, and a roller 5 arranged on the other side of the horn cover 1; The horizontal tensioning roller set 2 includes a roller 6 arranged on one side of the heating part, and a roller 7 arranged on the other side of the heating part; The sinking guide roller is arranged inside the box body and located on one side of the stirring shaft; The substrate conveying mechanism also includes an unwinding shaft disposed below the first roller; The substrate conveying mechanism further includes a winding shaft disposed below the roller six.
[0006] As a preferred solution of the present invention, the roughening rod includes a shaft rod, cylindrical protrusions densely distributed around the surface of the shaft rod, short shafts detachably connected to both ends of the shaft rod, and a motor connected to the short shaft on one side through an elastic coupling, wherein the outside of the short shaft is equipped with a shaft sleeve support frame, and the shaft sleeve support frame is connected to the device frame.
[0007] As a preferred solution of the present invention, the vibration part includes tenons respectively installed in the middle of the sleeve support frame, and a cam groove opened in the middle of the short shaft, wherein the tenons are correspondingly matched inside the cam groove.
[0008] As a preferred solution of the present invention, the pneumatic mixing section includes a hopper connected to the top of the horizontal section through an auger, an air tank connected to one end of the horizontal section, and an air pump connected to the inlet of the air tank.
[0009] As a preferred solution of the present invention, the recovery unit includes a filter tank, a horn cover 2 connected to the filter tank inlet, a conduit 1 connected to the filter tank outlet, and a control valve 1 connected to one end of the conduit 1; Among them, the top port of the speaker cover 2 is aligned below the bottom port of the speaker cover 1, and mesh plates and rollers are alternately arranged inside the top port of the speaker cover 2, and the tops of the speaker cover 2, the mesh plates and the rollers are level.
[0010] As a preferred solution of the present invention, the heating unit includes a control valve 2 connected to one end of the conduit 1, a conduit 2 connected to the outlet of the control valve 2, a diversion manifold connected to the outlet of the conduit 2, and two cover boxes connected to the outlet of the diversion manifold; Wherein, the interiors of the two cover boxes are both provided with temperature-controlled electric heating wires, and the two cover boxes are arranged in a symmetrical manner and their opposite sides are densely covered with air openings.
[0011] As a preferred solution of the present invention, the scraping part includes scrapers symmetrically arranged in the upper and lower parts, and the two ends of the scraper are correspondingly slidably fitted in the slide groove of the frame. There are adjustment bolts in the slide groove that rotate vertically. The upper and lower ends of the adjustment bolts are provided with threads in opposite directions, and the upper and lower ends are respectively threadedly connected to the two ends of the upper and lower scrapers.
[0012] A coating method for a molecular sieve coating device comprises the following steps: Step 1, the substrate cloth is unwound in a manner of passing over the top of roller 2, under roller 3, over roller 1, under roller 4, over roller 5, under the sinking guide roller, over roller 7, and over roller 6; Step 2: The roughening rod roughens the surface of the substrate fabric by self-rotation and vibration after the substrate fabric is attached to the substrate fabric to expose more pores inside the substrate fabric; Step 3: The injection mechanism uses airflow to inject the mixed molecular sieve particles into the pores; Step 4: The substrate cloth is then dip-coated with the molecular sieve by the dip-coating mechanism; In step five, the waste gas in step three is recovered and heated via the drying mechanism, and the substrate cloth after dip coating is dried. By filling the pores of the molecular sieve particles prior to dip coating, the loading capacity of the molecular sieve is increased.
[0013] Compared with the prior art, the present invention has the following beneficial effects: In the present invention, the roughening rod roughens the surface of the substrate cloth by self-rotation and axial vibration after being attached to the surface of the substrate cloth, thereby exposing more pores inside the substrate. Exposing more pores can "fix" more molecular sieve particles, ultimately achieving the purpose of increasing the molecular sieve loading capacity. At the same time, the shaft rod can be replaced through the detachable connection. Therefore, when using different substrates, in order to achieve the purpose of exposing more pores and under the premise that friction will not damage the strength of the substrate itself, the density and size of the surface cylindrical protrusions can be adjusted by replacing the shaft rod to adapt to more usage environments.
[0014] The present invention utilizes airflow to disperse the molecular sieve particles put into the curved pipe, and uses the airflow as a carrier and a driving force. After the molecular sieve particles are mixed, the molecular sieve particles can be transported to the substrate cloth. Since the substrate cloth usually adopts a substrate with pores, such as ceramic fiber, glass fiber, etc., it has a certain air permeability. After being covered on the surface of the substrate cloth by a horn cover, the airflow of the mixed molecular sieve particles can be "covered" on the surface of the substrate cloth, thereby intercepting the pores and injecting the molecular sieve particles into the exposed pores. By performing the pore filling of the molecular sieve particles one step prior to the immersion coating, the situation in which the slurry liquid phase with stronger fluidity squeezes the internal pores of the substrate cloth during the immersion coating is avoided, thereby increasing the loading capacity of the molecular sieve.
[0015] In the present invention, the airflow from which the molecular sieve particles are "filtered out" can be regarded as waste gas. Since the waste gas still has a certain kinetic energy, after being guided by the recovery part, it is heated by the heating part to achieve the purpose of warm air drying, thereby simplifying the structure and reducing energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 for Figure 1 Another perspective diagram of the structure; Figure 3 It is a simplified schematic diagram of the working state of the present invention; Figure 4 for Figure 1 Schematic diagram of the structure of the middle part; Figure 5 for Figure 4 Schematic diagram of the structure in the figure; Figure 6 for Figure 5 Schematic diagram of the structure of the middle part; Figure 7 It is a schematic diagram of the internal structure of the second speaker cover of the present invention; Figure 8 It is a schematic diagram of the heating part structure of the present invention; Fig. 9 for Figure 1 The enlarged schematic diagram of point A in the middle; Fig.10 It is a schematic diagram of the scraper and the adjusting bolt of the present invention.
[0017] Among them, 100, substrate conveying mechanism; 110, triangular roller group; 11a, roller one; 11b, roller two; 11c, roller three; 120, horizontal tension roller group one; 12a, roller four; 12b, roller five; 130, horizontal tension roller group two; 13a, roller six; 13b, roller seven; 140, sinking guide roller; 150, unwinding shaft; 160, winding shaft; 200, pretreatment mechanism; 210, roughening rod; 21a, shaft rod; 21b, cylindrical protrusion; 21c, short shaft; 21d, elastic coupling; 21e, motor; 220, vibration part; 22a, cam groove; 22b, tenon; 300, injection mechanism; 310, bending pipe; 31a , horizontal section; 31b, vertical section; 320, wind mixing section; 32a, hopper; 32b, auger; 32c, gas tank; 32d, air pump; 330, horn cover one; 400, drying mechanism; 410, recovery section; 41a, filter tank; 41b, horn cover two; 41c, mesh plate; 41d, roller; 41e, conduit one; 41f, control valve one; 420, heating section; 42a, control valve two; 42b, conduit two; 42c, diversion manifold; 42d, cover box; 500, immersion coating mechanism; 510, box; 520, stirring shaft; 530, scraping section; 53a, scraper; 53b, adjustment bolt; 600, substrate cloth. DETAILED DESCRIPTION
[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example
[0019] like Figure 1-2 As shown, an embodiment of the present invention provides a molecular sieve coating device.
[0020] In this embodiment, Figure 3 As shown, it includes a substrate conveying mechanism 100, which includes a triangular roller group 110, and the triangular roller group 110 includes a roller 11a, a roller 2 11b, and a roller 3 11c, wherein the substrate cloth 600 is unwound in a manner of bypassing over the roller 2 11b, under the roller 3 11c, and over the roller 1 11a.
[0021] In this embodiment, Figure 4-5 As shown, the pre-treatment mechanism 200 includes a roughening bar 210 attached between the roller 11a and the roller 2 11b, and a vibrating part 220 for driving the roughening bar 210 to vibrate axially.
[0022] In this embodiment, the base cloth 600 is unwound in a manner of passing over the top of roller 2 11b, under roller 3 11c, and over roller 1 11a. At this time, the roughening rod 210 attached between roller 1 11a and roller 2 11b can perform two roughening processes on the surface of the base cloth 600, thereby making the surface of the base cloth 600 rougher and exposing more internal pores.
[0023] In this embodiment, Figure 3 As shown, the injection mechanism 300 includes a bend pipe 310 located downstream of the triangular roller group 110, and the bend pipe 310 has a horizontal section 31a and a vertical section 31b, wherein one end of the horizontal section 31a is connected to the wind mixing part 320, and one end of the vertical section 31b is connected to the horn cover 330.
[0024] In this embodiment, the wind mixing section 320 uses airflow as a carrier and power. After mixing the molecular sieve particles, the molecular sieve particles can be transported to the substrate cloth 600. Since the substrate cloth 600 usually adopts a substrate with pores such as ceramic fiber, glass fiber, etc., it has a certain air permeability. After being covered on the surface of the substrate cloth 600 by the speaker cover 330, the airflow of the mixed molecular sieve particles can be "covered" on the surface of the substrate cloth 600, thereby intercepting the pores and injecting the molecular sieve particles into the exposed pores.
[0025] In this embodiment, Figure 3 As shown, the drying mechanism 400 includes a recovery portion 410 aligned with and located below the speaker cover 330, and a heating portion 420 located downstream of the speaker cover 330, wherein the heating portion 420 is connected to the recovery portion 410.
[0026] In this embodiment, the airflow from which the molecular sieve particles are "filtered out" can be regarded as waste gas. Since the waste gas still has a certain kinetic energy, after being guided by the recovery section 410, it is heated by the heating section 420 to achieve the purpose of warm air drying, thereby simplifying the structure and reducing energy consumption.
[0027] In this embodiment, after the substrate cloth 600 is inserted between the speaker cover 330 and the recovery part 410, sealing measures should be taken to prevent the molecular sieve particles from leaking into the external air environment while ensuring that the substrate cloth 600 can be transported normally.
[0028] In this embodiment, Figure 3 As shown, the dipping coating mechanism 500 includes a box body 510 disposed between the horn cover 330 and the heating part 420 , a stirring shaft 520 rotatably disposed inside the box body 510 , and a scraping part 530 disposed on one side above the box body 510 .
[0029] In this embodiment, the interior of the box 510 is mixed with a liquid phase such as a sol adhesive to form a slurry of molecular sieve particles. After the substrate cloth 600 slowly passes through, a layer of thin film analogues can be coated on its surface, thereby achieving a large amount of molecular sieve loading.
[0030] In summary, the roughening rod 210 roughens the surface of the substrate cloth 600 by rotation and vibration to expose more of its internal pores, the injection mechanism 300 uses airflow to inject the mixed molecular sieve particles into the pores, and then the substrate cloth 600 is subjected to molecular sieve impregnation coating by the immersion coating mechanism 500, wherein the exhaust gas is recovered and heated by the drying mechanism 400, so as to subsequently dry the substrate cloth 600. By filling the pores of the molecular sieve particles prior to the immersion coating, the situation in which the more fluid slurry liquid phase occupies the internal pores of the substrate cloth 600 during the immersion coating is avoided, thereby increasing the loading capacity of the molecular sieve.
[0031] Reference again Figure 3 The substrate conveying mechanism 100 also includes a horizontal tensioning roller group 120 located downstream of the triangular roller group 110, a horizontal tensioning roller group 2 130 located downstream of the horizontal tensioning roller group 120, and a sinking guide roller 140 located between the horizontal tensioning roller group 120 and the horizontal tensioning roller group 2 130.
[0032] The horizontal tensioning roller set 120 includes a roller 12a disposed on one side of the speaker cover 330 and a roller 12b disposed on the other side of the speaker cover 330.
[0033] The second horizontal tensioning roller set 130 includes a sixth roller 13a disposed on one side of the heating portion 420, and a seventh roller 13b disposed on the other side of the heating portion 420.
[0034] The sinking guide roller 140 is disposed inside the box body 510 and located on one side of the stirring shaft 520 .
[0035] The substrate conveying mechanism 100 further includes an unwinding shaft 150 disposed below the roller 11a.
[0036] The substrate conveying mechanism 100 further includes a winding shaft 160 disposed below the roller six 13a.
[0037] Reference again Figure 4-5 , and refer to Figure 6 The roughening rod 210 includes a shaft 21a, cylindrical protrusions 21b densely distributed around the surface of the shaft 21a, short shafts 21c detachably connected to both ends of the shaft 21a, and a motor 21e connected to the short shaft 21c on one side through an elastic coupling 21d, wherein the outside of the short shaft 21c is equipped with a shaft sleeve support frame, and the shaft sleeve support frame is connected to the device frame.
[0038] In this embodiment, a dovetail structure is selected as the detachable connection method. The detachable connection can realize the replacement of the shaft rod 21a. Therefore, when using different substrates, in order to achieve the purpose of exposing more pores and under the premise that friction will not damage the strength of the substrate itself, the density, size, etc. of the surface cylindrical protrusions 21b can be adjusted by replacing the shaft rod 21a.
[0039] The vibration part 220 includes a tenon 22b respectively installed in the middle of the sleeve support frame, and a cam groove 22a opened in the middle of the short shaft 21c, wherein the tenon 22b is correspondingly matched in the cam groove 22a.
[0040] Reference again Figure 3 The wind mixing section 320 includes a hopper 32a connected to the top of the horizontal section 31a through an auger 32b, an air tank 32c connected to one end of the horizontal section 31a, and an air pump 32d connected to the inlet of the air tank 32c.
[0041] Reference again Figure 3 , and refer to Figure 7-8 The recovery part 410 includes a filter tank 41a, a bell cover 41b connected to the inlet of the filter tank 41a, a conduit 41e connected to the outlet of the filter tank 41a, and a control valve 41f connected to one end of the conduit 41e.
[0042] Among them, the top port of the speaker cover 41b is aligned below the bottom port of the speaker cover 1 330, and the top of the speaker cover 41b is alternately provided with mesh plates 41c and rollers 41d, and the tops of the speaker cover 41b, mesh plates 41c and rollers 41d are level.
[0043] The above design, on the one hand, allows the airflow to be discharged smoothly through the base cloth 600, and on the other hand, the top of the mesh plate 41c and the roller 41d are level, which can reduce the friction between the base cloth 600 and the speaker cover 41b when unwinding, so that the base cloth 600 can be unwound smoothly.
[0044] Reference again Figure 8 The heating part 420 includes a control valve 42a connected to one end of a conduit 41e, a conduit 42b connected to the outlet of the control valve 42a, a branch manifold 42c connected to the outlet of the conduit 42b, and two cover boxes 42d connected to the outlet of the branch manifold 42c.
[0045] The two cover boxes 42d are both provided with temperature-controlled heating wires, which are arranged in a symmetrical manner and have air openings densely distributed on opposite sides thereof.
[0046] refer to Figure 9-10The scraping portion 530 includes scrapers 53a symmetrically arranged in the upper and lower parts. The two ends of the scraper 53a are correspondingly slidably fitted in the slide groove of the frame. There are adjusting bolts 53b in the slide groove that rotate vertically. The upper and lower ends of the adjusting bolt 53b are provided with threads in opposite directions, and the upper and lower ends thereof are respectively threadedly connected to the two ends of the upper and lower scrapers 53a.
[0047] In this embodiment, after dipping and coating, the slurry forms a coating of varying thickness on the surface of the substrate cloth 600. By rotating the adjusting bolt 53b, the distance between the upper and lower scrapers 53a is adjusted, thereby achieving the purpose of controlling the thickness of the surface film of the substrate cloth 600. Furthermore, in this embodiment, the scraper 53a is arranged above the box 510, and the scraped slurry will directly enter the box 510 for recovery.
[0048] The coating method of the molecular sieve coating device of the present invention comprises the following steps: Step 1, the base cloth 600 is rolled and mounted on the outside of the unwinding shaft 150, and then the base cloth 600 is unwound in a manner of passing over the top of roller 2 11b, under roller 3 11c, over roller 1 11a, under roller 4 12a, over roller 5 12b, under the sinking guide roller 140, over roller 7 13b, and over roller 6 13a, and finally rolled up on a reel mounted on the outside of the reel 160.
[0049] The base cloth 600 passes between the first speaker cover 330 and the second speaker cover 41b, between the scrapers 53a, and between the cover boxes 42d.
[0050] Step 2: Mix the molecular sieve particles with a liquid phase such as a sol adhesive to form a slurry, which is then injected into the box 510 and stirred by the stirring shaft 520 to avoid uneven dispersion of the molecular sieve particles, which in turn leads to uneven load. Then the unwinding shaft 150 and the reeling shaft 160 are started, and the substrate cloth 600 is transported at a uniform speed. At the same time, the shaft 21a is driven by the motor 21e, and the shaft 21a is driven to rotate under the transmission of the elastic coupling 21d. During the rotation, the cam groove 22a is restricted by the tenon 22b, so that the shaft 21a makes axial reciprocating motion. At this time, the roughening rod 210 roughens the surface of the substrate cloth 600 through the cylindrical protrusion 21b after being attached to the substrate cloth 600, thereby exposing more pores inside it.
[0051] In this embodiment, the rotation direction of the shaft 21 a is preferably opposite to the rotation direction of the unwinding shaft 150 .
[0052] Step three, the injection mechanism 300 uses airflow to inject the mixed molecular sieve particles into the pores, specifically, the air pump 32d is used to create an airflow, and the airflow blows away the molecular sieve particles put into the curved pipe 310. At the same time, the airflow is used as a carrier and a power. After the molecular sieve particles are mixed, the molecular sieve particles can be transported to the substrate cloth 600. After entering the horn cover 330, since the substrate cloth 600 usually adopts a substrate with pores such as: ceramic fiber, glass fiber, etc., it has a certain air permeability. After being covered on the surface of the substrate cloth 600 by the horn cover 330, the airflow of the mixed molecular sieve particles can be "covered" on the surface of the substrate cloth 600, thereby intercepting the pores and injecting the molecular sieve particles into the exposed pores. By filling the pores of the molecular sieve particles one step before the immersion coating, the situation where the slurry liquid phase with stronger fluidity squeezes the internal pores of the substrate cloth during immersion coating is avoided, thereby increasing the loading capacity of the molecular sieve.
[0053] Step 4: The substrate cloth 600 is then immersed in the slurry under the guidance of the sinking guide roller 140, and then the molecular sieve immersion coating is performed on the substrate cloth 600 by the immersion coating mechanism 500. At the same time, the uneven distribution of the slurry content is avoided by the stirring shaft 520. After the immersion coating, the slurry forms a coating of varying thickness on the surface of the substrate cloth 600. By rotating the adjusting bolt 53b, the distance between the upper and lower scrapers 53a is adjusted, thereby achieving the purpose of controlling the surface film thickness of the substrate cloth 600.
[0054] In step five and step three, the waste gas is recovered and heated by the drying mechanism 400, and the substrate cloth 600 after dip coating is dried. Since the top port of the horn cover 41b is alternately provided with mesh plates 41c and rollers 41d, and the tops of the horn cover 41b, mesh plates 41c and rollers 41d are level, this design, on the one hand, allows the airflow to be discharged smoothly through the substrate cloth 600, and on the other hand, the tops of the mesh plates 41c and rollers 41d are level, which can reduce the friction between the substrate cloth 600 and the horn cover 41b when unwinding, so that the substrate cloth 600 can be unwound smoothly. The airflow enters the interior of the conduit 42b under the control of the control valve 42a, and enters the interior of the cover box 42d under the diversion of the diversion manifold 42c. Under the heating of the temperature-controlled heating wire, hot air is formed, and finally the substrate cloth 600 after dip coating is dried. By filling the pores of the molecular sieve particles one step before the dip coating, the loading capacity of the molecular sieve is increased.
[0055] In this embodiment, in order to prevent the substrate cloth 600 from being damaged by impact when the air flow velocity is too high, the amount of air entering the heating part 420 can be adjusted by controlling the opening degree of the valve 41f, thereby ensuring product quality.
[0056] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A molecular sieve coating device, comprising a substrate conveying mechanism (100), a pretreatment mechanism (200), an injection mechanism (300), a drying mechanism (400) and an immersion coating mechanism (500), characterized in that: The substrate conveying mechanism (100) comprises a triangular roller group (110), wherein the triangular roller group (110) comprises a roller one (11a), a roller two (11b), and a roller three (11c), wherein the substrate cloth (600) is unwound in a manner of passing over the top of the roller two (11b), under the roller three (11c), and over the top of the roller one (11a); The pretreatment mechanism (200) comprises a roughening rod (210) attached between the first roller (11a) and the second roller (11b), and a vibration part (220) for driving the roughening rod (210) to vibrate axially; The injection mechanism (300) comprises a curved pipe (310) located downstream of the triangular roller group (110), the curved pipe (310) having a horizontal section (31a) and a vertical section (31b), wherein one end of the horizontal section (31a) is connected to a wind mixing section (320), and one end of the vertical section (31b) is connected to a horn cover 1 (330); The drying mechanism (400) comprises a recovery portion (410) aligned with and located below the first speaker cover (330), and a heating portion (420) located downstream of the first speaker cover (330), wherein the heating portion (420) is connected to the recovery portion (410); and, The immersion coating mechanism (500) comprises a box (510) disposed between a horn cover (330) and a heating portion (420), a stirring shaft (520) rotatably disposed inside the box (510), and a scraping portion (530) disposed on one side above the box (510).
2. A molecular sieve coating device according to claim 1, characterized in that: The roughening rod (210) roughens the surface of the substrate cloth (600) by self-rotation and vibration, thereby exposing more of its internal pores. The injection mechanism (300) injects the mixed molecular sieve particles into the pores using airflow, and then the substrate cloth (600) is subjected to molecular sieve impregnation coating by the impregnation coating mechanism (500), wherein the waste gas is recovered and heated by the drying mechanism (400) to subsequently dry the substrate cloth (600). By filling the pores of the molecular sieve particles prior to the impregnation coating, the situation in which the slurry liquid phase with stronger fluidity squeezes out the internal pores of the substrate cloth (600) during the impregnation coating is avoided, thereby increasing the molecular sieve loading capacity.
3. A molecular sieve coating device according to claim 2, characterized in that: The substrate conveying mechanism (100) further comprises a horizontal tensioning roller group 1 (120) located downstream of the triangular roller group (110), a horizontal tensioning roller group 2 (130) located downstream of the horizontal tensioning roller group 1 (120), and a sinking guide roller (140) located between the horizontal tensioning roller group 1 (120) and the horizontal tensioning roller group 2 (130); Wherein, the horizontal tensioning roller set 1 (120) comprises a roller 4 (12a) arranged on one side of the speaker cover 1 (330), and a roller 5 (12b) arranged on the other side of the speaker cover 1 (330); The second horizontal tensioning roller group (130) comprises a roller six (13a) arranged on one side of the heating portion (420), and a roller seven (13b) arranged on the other side of the heating portion (420); The sinking guide roller (140) is arranged inside the box (510) and located on one side of the stirring shaft (520); The substrate conveying mechanism (100) further comprises an unwinding shaft (150) disposed below the roller 1 (11a); The substrate conveying mechanism (100) further comprises a winding shaft (160) disposed below roller six (13a).
4. A molecular sieve coating device according to claim 3, characterized in that: The roughening rod (210) comprises a shaft (21a), cylindrical protrusions (21b) densely distributed around the surface of the shaft (21a), short shafts (21c) detachably connected to both ends of the shaft (21a), and a motor (21e) connected to the short shaft (21c) on one side via an elastic coupling (21d), wherein the outside of the short shaft (21c) is equipped with a shaft sleeve support frame, and the shaft sleeve support frame is connected to the device frame.
5. A molecular sieve coating device according to claim 4, characterized in that: The vibration part (220) comprises tenons (22b) respectively mounted in the middle of the shaft sleeve support frame, and a cam groove (22a) opened in the middle of the short shaft (21c), wherein the tenons (22b) are correspondingly fitted inside the cam groove (22a).
6. A molecular sieve coating device according to claim 5, characterized in that: The pneumatic mixing section (320) comprises a hopper (32a) connected to the top of the horizontal section (31a) via an auger (32b), an air tank (32c) connected to one end of the horizontal section (31a), and an air pump (32d) connected to an inlet of the air tank (32c).
7. A molecular sieve coating device according to claim 6, characterized in that: The recovery part (410) comprises a filter tank (41a), a second horn cover (41b) connected to the inlet of the filter tank (41a), a conduit (41e) connected to the outlet of the filter tank (41a), and a control valve (41f) connected to one end of the conduit (41e); The top port of the second speaker cover (41b) is aligned below the bottom port of the first speaker cover (330), and mesh plates (41c) and rollers (41d) are alternately arranged inside the top port of the second speaker cover (41b), and the tops of the second speaker cover (41b), the mesh plates (41c) and the rollers (41d) are flush.
8. A molecular sieve coating device according to claim 7, characterized in that: The heating unit (420) comprises a control valve 2 (42a) connected to one end of the conduit 1 (41e), a conduit 2 (42b) connected to the outlet of the control valve 2 (42a), a flow dividing manifold (42c) connected to the outlet of the conduit 2 (42b), and two cover boxes (42d) connected to the outlet of the flow dividing manifold (42c); Wherein, the interiors of the two cover boxes (42d) are both provided with temperature-controlled electric heating wires, and the two cover boxes are arranged in a symmetrical manner and their opposite sides are densely covered with air openings.
9. A molecular sieve coating device according to claim 8, characterized in that: The scraping portion (530) comprises scrapers (53a) symmetrically arranged in upper and lower parts, the two ends of the scrapers (53a) correspondingly slidingly fit in the slide grooves of the frame, and adjustment bolts (53b) are vertically rotated in the slide grooves, and the upper and lower ends of the adjustment bolts (53b) are provided with threads in opposite directions, and the upper and lower ends are correspondingly threadedly connected to the two ends of the upper and lower scrapers (53a).
10. A coating method for a molecular sieve coating device according to claim 9, characterized in that: The following steps are involved: Step 1, the substrate cloth (600) is unwound in a manner of passing over the top of roller 2 (11b), under roller 3 (11c), over roller 1 (11a), under roller 4 (12a), over roller 5 (12b), under the sinking guide roller (140), over roller 7 (13b), and over roller 6 (13a); Step 2: The roughening rod (210) roughens the surface of the base fabric (600) by self-rotation and vibration after the base fabric (600) is attached to the base fabric (600) to expose more pores inside the base fabric; Step 3: The injection mechanism (300) injects the mixed molecular sieve particles into the pores using airflow; Step 4: The substrate cloth (600) is then dip-coated with the molecular sieve by the dip-coating mechanism (500); In step five, the waste gas in step three is recovered and heated via the drying mechanism (400), and the substrate cloth (600) after dip coating is dried. By filling the pores of the molecular sieve particles prior to dip coating, the loading capacity of the molecular sieve is increased.