A desiccant for insulating glass and its preparation method and polishing equipment

Abstract

The present application relates to the field of desiccant, and specifically discloses a desiccant for hollow glass, a preparation method thereof and a polishing device, wherein the desiccant for hollow glass comprises an inner core and an outer shell wrapped around the inner core; the inner core is made of the following raw materials in parts by weight: 16-25 parts of 4A molecular sieve powder, 1-5 parts of aluminum hydroxide powder, 3-7 parts of bauxite powder, and 5-11 parts of binder; the outer shell is made of the following raw materials in parts by weight: 14-22 parts of 3A molecular sieve powder, 6-12 parts of aluminum hydroxide powder, 1-4 parts of bauxite powder, and 3-9 parts of binder. The desiccant of the present application has good strength and low powder falling degree, which can reduce the situation where desiccant dust runs to the inner surface of hollow glass, reduce the rework of defective products of hollow glass, and thus reduce the waste of related materials, labor, energy and other resources.

Description

Technical Field

[0001] The present application relates to the field of desiccants, and more specifically, to a desiccant for insulating glass and a preparation method and polishing equipment thereof. Background Art

[0002] With the continuous improvement of people's living standards and housing conditions, my country's real estate industry has developed rapidly. Insulating glass has been widely used in real estate construction because of its good energy-saving and environmental protection, sound insulation and noise reduction, and low frost. Desiccant is the most critical material to achieve the energy-saving and environmental protection of insulating glass.

[0003] The main function of insulating glass desiccant is to absorb the moisture in the gas of insulating glass interlayer, including continuous absorption of the moisture newly entering the spacer during its service life. It can prevent the glass from fogging, keep the insulating glass smooth and transparent even at very low temperatures, improve the thermal insulation, sound insulation and heat insulation performance of insulating glass, and thus reduce energy consumption.

[0004] However, many desiccants for insulating glass on the market often have desiccant dust that runs onto the inner surface of the insulating glass, resulting in rework of defective insulating glass products, which greatly wastes related materials, labor, energy and other resources. Summary of the invention

[0005] In order to reduce the powder falling phenomenon of the desiccant, the present application provides a desiccant for insulating glass, a preparation method thereof, and a polishing device.

[0006] In a first aspect, the present application provides a desiccant for insulating glass, which adopts the following technical solution:

[0007] A desiccant for hollow glass comprises an inner core and an outer shell wrapped around the inner core; the inner core is made of the following raw materials in parts by weight: 16-25 parts of 4A molecular sieve powder, 1-5 parts of aluminum hydroxide powder, 3-7 parts of bauxite powder, and 5-11 parts of a binder; the outer shell is made of the following raw materials in parts by weight: 14-22 parts of 3A molecular sieve powder, 6-12 parts of aluminum hydroxide powder, 1-4 parts of bauxite powder, and 3-9 parts of a binder.

[0008] By adopting the above technical scheme, firstly, the desiccant structure in the present application is a form of an outer shell wrapping an inner core. At the same time, the materials of the outer shell and the inner shell are optimized, and appropriate amounts of alumina powder and bauxite powder are selected in the outer shell and the inner shell, so that the desiccant of the present application has good strength and low powder falling degree, reduces the situation where desiccant dust runs to the inner surface of the insulating glass, reduces the rework of defective insulating glass products, and thus reduces the waste of related materials, labor, energy and other resources.

[0009] Optionally, the binder includes at least one of high clay, kaolin, montmorillonite, montmorillonite, halloysite, anti-antigen clay, and bentonite.

[0010] Optionally, the adhesive includes at least one of high clay, kaolin, montmorillonite, montmorillonite, halloysite, anti-antigen clay, and bentonite.

[0011] Optionally, the particle size of the desiccant is 0.5-0.9 mm, and the crushing resistance of the desiccant is 5-6 N / particle.

[0012] Optionally, the powder loss of the desiccant is ≤0.02 mg / g.

[0013] In a second aspect, the present application provides a method for preparing a desiccant for insulating glass, using the following technical solution:

[0014] A method for preparing a desiccant for insulating glass comprises the following steps:

[0015] Inner core preparation: mixing raw materials of the inner core to obtain a first mixed material, and granulating the first mixed material to obtain inner core particles;

[0016] Shell coating: mixing the shell raw materials to obtain a second mixed material, and coating the second mixed material on the inner core particles to obtain semi-finished particles;

[0017] Polishing: Polish the semi-finished particles to obtain intermediate particles;

[0018] Low temperature drying: drying the intermediate particles at a temperature of 170-180°C;

[0019] High temperature calcination: calcine the dried intermediate particles at a temperature of 870-880°C to obtain a desiccant.

[0020] By adopting the above technical solution, the polishing operation can improve the strength of the particles. The stronger the strength, the lower the wear rate. The lower the wear rate, the less likely the particles are to shed powder. This reduces the friction between the desiccant particles during the moving and transportation of the insulating glass. At the same time, the polishing operation can also reduce the occurrence of static electricity.

[0021] In a third aspect, the present application provides a polishing device for a method for preparing a desiccant for insulating glass, which adopts the following technical solution:

[0022] A polishing device for a method for preparing a desiccant for insulating glass, the device is used in the polishing step: the device comprises a frame, a conveyor belt and a polishing mechanism, the conveyor belt is rotatably connected to the frame, a first driving device for driving the conveyor belt to rotate is arranged on the frame, the top wall of the conveyor belt is inclined and moves downward, the frame is provided with a loading piece at the top end of the conveyor belt, and the frame is provided with a receiving piece at the bottom end of the conveyor belt; the polishing mechanism comprises a cover shell, a rotating roller and polishing soft hair, the cover shell is arranged on the frame and located above the conveyor belt, the bottom wall of the cover shell and the top wall of the conveyor belt are The wall is parallel to the bottom wall of the conveyor belt and a feeding cavity is formed between the wall and the conveyor belt bottom wall; a plurality of clearance grooves are penetrated through the bottom wall of the cover shell, and the plurality of clearance grooves are arranged along the inclined direction of the top wall of the conveyor belt; the rollers and the clearance grooves are arranged one by one and are rotatably arranged on the inner wall of the cover shell; a second driving device for driving the rollers to rotate is arranged on the cover shell; the rollers are arranged along the inclined direction of the top wall of the conveyor belt and the bottom ends extend out of the clearance grooves; the polishing bristles are arranged on the circumferential wall of the rollers and there is a gap between the polishing bristles and the wall of the clearance grooves; a cleaning device for cleaning waste chips on the polishing bristles is arranged in the cover shell.

[0023] By adopting the above technical scheme, the roller drives the polishing bristles to rotate, and the polishing bristles contact the material particles to polish the material particles; and the transmission directions of the conveyor belt and the opposite sides of the roller are opposite, so that the material particles can continuously jump and stay on the conveyor belt for a longer time, so that the polishing bristles can fully polish the material particles; at the same time, because the conveyor belt is arranged at an angle, the material gradually moves away from the conveyor belt to achieve unloading in coordination with the transmission of the conveyor belt; the present application is also provided with a cleaning device, which can clean the waste chips adhering to the polishing bristles, so that the polishing bristles can better polish the material particles.

[0024] Optionally, the cleaning device includes a storage tube, a baffle, a toggle plate and a support plate, the storage tube is arranged in the cover shell and is arranged one-to-one with the rotating roller, the storage tube is located on the side of the corresponding rotating roller away from the feeding piece, the storage tube is penetrated by a chip collection groove on the side facing the corresponding rotating roller, the baffle is arranged at the position where the storage tube is located at the top of the chip collection groove, the support plate is arranged at the position where the storage tube is located at the bottom of the chip collection groove, the baffle is located above the support plate and is aligned with the polishing bristles There is a gap between them, and one end of the support plate away from the storage tube abuts against the polishing soft bristles; the paddle plate is arranged on the inner wall of the storage tube, the paddle plate is located between the baffle plate and the support plate and is arranged close to the baffle plate, and one end of the paddle plate away from the storage tube abuts against the polishing soft bristles; sealing plates are arranged on both sides of the storage tube, the baffle plate and the support plate are both sealed and connected to the sealing plates, and one end of the sealing plate away from the storage tube is rotatably connected to the roller; the storage tube is also connected to an exhaust member.

[0025] By adopting the above technical solution, when the polishing bristles pass through the toggle plate, the toggle rod causes the polishing bristles to shake, so that the waste chips are shaken off the polishing bristles and sucked away by the exhaust member. At the same time, the baffle plate can reduce the random falling of waste chips, so that the waste chips can be smoothly sucked away by the exhaust member, thereby conveniently realizing the cleaning of the polishing bristles.

[0026] Optionally, the polishing bristles are mounted on the rotating roller via a detachable component, the detachable component comprising a detachable sheet, a fixing rod, a fixing electromagnet and a fixing magnet, the polishing bristles being arranged on a side wall of the detachable sheet, and the side wall of the detachable sheet facing away from the polishing bristles is wrapped around the rotating roller; a fixing groove is arranged on the peripheral wall of the rotating roller, the fixing rod is fixedly connected to one end of the detachable sheet along the circumference of the rotating roller, the fixing rod is inserted into the fixing groove, the fixing electromagnet is arranged on the wall of the fixing groove, the fixing magnet is arranged on the fixing rod, and the fixing electromagnet and the fixing magnet are magnetically connected; a Velcro is arranged between the end of the detachable sheet away from the fixing rod and the rotating roller; a retractable assembly for retracting and releasing the detachable sheet is arranged on the frame.

[0027] By adopting the above technical scheme, the magnetic connection between the fixed electromagnet and the fixed magnetic block and the adhesive effect of the Velcro allow the detachable sheet to be fixed on the roller and easily disassembled, so that the retractable assembly can wrap and disassemble the detachable sheet on the roller, thereby conveniently realizing the detachable connection of the polishing bristles and facilitating the replacement of the polishing bristles.

[0028] 7. The swiftly and minutely adjusting device for a wood-planer working table as claimed in claim 1, wherein said linking rod and said adjusting base are pivotally connected to each other with a bolt, and said bolt has a round shank to contact with said linking rod. said bolt has a round shank to contact with said linking rod. said linking rod has a round shank to contact with said linking rod.

[0029] By adopting the above technical solution, the limiting effect of the shaping roller and the clamping effect of the clamping plate enable the detachable sheet to be stably unfolded on the moving frame; thus, the moving frame can stably drive the detachable sheet to move downward, and the fixing rod can be smoothly inserted into the fixing groove. After the fixing electromagnet and the fixing magnetic block are magnetically connected, as the roller rotates, the detachable sheet can be stably wound on the roller under the smoothing and guiding effect of the shaping roller, and finally the Velcro fixes the end of the detachable sheet away from the fixing rod on the roller, which is convenient and quick. When disassembling, as long as the magnetic connection between the fixing electromagnet and the fixing magnetic block is released, the clamping of the clamping plate and the reverse rotation of the roller can be used to make the detachable sheet detach from the roller.

[0030] In summary, this application has the following beneficial effects:

[0031] 1. The present application optimizes the structure of the desiccant and the raw materials of each part, and the desiccant finally prepared has good strength and low powder loss.

[0032] 2. The present application provides a polishing device that can fully polish the semi-finished particles, further improve the strength of the desiccant and reduce the powder falling degree of the desiccant. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the structure of the polishing equipment in Example 10 of the present application.

[0034] Figure 2 yes Figure 1 Sectional view along line AA.

[0035] Figure 3 yes Figure 2 Enlarged view of point B in the middle.

[0036] Figure 4It is a schematic diagram used to illustrate the loading structure in Example 10 of the present application.

[0037] Figure 5 yes Figure 4 Enlarged view of point C in the middle.

[0038] Figure 6 It is a cross-sectional view used to illustrate the detachable component structure in Example 10 of the present application.

[0039] Figure 7 It is a schematic diagram used to illustrate the retractable component structure in Example 10 of the present application.

[0040] Figure 8 It is a schematic diagram used to illustrate the positioning rod structure in Example 10 of the present application.

[0041] Fig. 9 It is a schematic diagram used to illustrate the structure of the third driving device in Example 10 of the present application.

[0042] Fig.10 It is a schematic diagram used to illustrate the structure of the driving member in Example 10 of the present application.

[0043] 1. Frame; 11. Enclosure; 2. Conveyor belt; 21. Pulley; 22. First drive device; 3. Polishing mechanism; 31. Cover; 311. Moving slot; 312. Closing plate; 32. Roller; 33. Polishing bristles; 34. Feeding chamber; 35. Yielding slot; 36. Second drive device; 4. Loading member; 41. Hopper; 42. Loading pipe; 5. Receiving member; 51. Receiving pipe; 6. Cleaning device; 61. Storage pipe; 62. Baffle; 63. Paddle plate; 64. Supporting plate; 65. Chip collecting slot; 66. Closing plate; 67. Sealing slide; 7. Exhaust member; 71. Connecting pipe; 72. Exhaust pipe; 73. Air pump; 8. Removable component; 81. Removable sheet; 82. Fixed rod; 83. Fixed electromagnetic Iron; 84, fixed magnet; 85, fixed groove; 86, Velcro; 9, retractable assembly; 91, movable frame; 911, first side plate; 912, connecting plate; 913, second side plate; 92, shaping roller; 93, mounting frame; 94, third driving device; 941, guide rod; 942, driving screw; 943, driving screw ring; 944, first bevel gear; 945, first motor; 946, first driving bevel gear; 95, connecting plate; 96, sliding channel; 97, clamping plate; 98, driving member; 961, feed screw; 962, driving screw block; 963, base block; 964, servo motor; 965, second driving bevel gear; 966, third driving bevel gear; 97, clamping block; 98, clamping groove; 99, positioning rod. DETAILED DESCRIPTION

[0044] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0045] The raw materials in this application are all commercially available.

[0046] The 4A molecular sieve raw powder and the 3A molecular sieve raw powder were purchased from the A-type molecular sieve raw powder produced by Luoyang Jianlong Micro-Nano New Materials Co., Ltd., with an average particle size of 325 mesh. The average particle sizes of aluminum hydroxide powder, halloysite and sheep liver clay were between 200 mesh and 325 mesh. The viscosity of high clay was 2000 mpa·s.

[0047] Example 1

[0048] Example 1 of the present application discloses a desiccant for insulating glass, comprising an inner core and an outer shell wrapped around the inner core.

[0049] The inner core is made of the following raw materials in parts by weight: 20 kg of 4A molecular sieve powder, 3 kg of aluminum hydroxide powder, 4 kg of bauxite powder, and 6 kg of a binder, wherein the binder is sheep liver soil.

[0050] The shell is made of the following raw materials in parts by weight: 16 kg of 3A molecular sieve powder, 7 kg of aluminum hydroxide powder, 2 kg of bauxite powder, and 4 kg of adhesive. The adhesive is a mixture of sheep liver clay and halloysite in a mass ratio of 1:3.

[0051] A method for preparing a desiccant for insulating glass comprises the following steps:

[0052] Preparation of inner core: the raw materials of the inner core are mixed uniformly according to a proportion to obtain a first mixture; then the first mixture is added to a ball forming machine, the ball forming machine is rotated at a speed of 20±2 rpm, and water mist is sprayed into the premixed powder at a speed of 0.4±0.1㎡ / s to obtain inner core particles with a particle size of 0.3-0.4mm;

[0053] Shell wrapping: the raw materials of the shell are mixed evenly according to proportion to obtain a second mixed material, the second mixed material and the inner core particles are added to a ball forming machine, the ball forming machine is rotated at a speed of 25±2 rpm, and water mist is sprayed into the premixed powder at a speed of 0.3±0.1㎡ / s to obtain semi-finished particles;

[0054] Polishing: Polish the semi-finished particles to obtain intermediate particles;

[0055] Low temperature drying: drying the intermediate pellets at 170-180°C to remove 23-24wt% of the water;

[0056] High temperature calcination: The dried intermediate particles are calcined at a temperature of 870-880°C to obtain a desiccant having a moisture content of 4-5.2wt% and a particle size of 0.5-0.9mm.

[0057] Embodiment 2-5

[0058] The difference between Example 2-5 and Example 1 is that the content of each component in the desiccant raw material is different. See Table 1 for details.

[0059] Table 1 Component content of desiccant in Examples 1-5

[0060]

[0061] Example 6

[0062] The difference between Example 6 and Example 1 is that the binder is a mixture of high clay and halloysite in a mass ratio of 1:3.

[0063] Example 7

[0064] The difference between Example 7 and Example 1 is that the adhesive is a mixture of high clay and sheep liver soil in a mass ratio of 1:3.

[0065] Example 8

[0066] The difference between Example 8 and Example 1 is that the binder is halloysite.

[0067] Example 9

[0068] The difference between Example 9 and Example 1 is that the particle size of the inner core particles is 0.1-0.2 mm.

[0069] Example 10

[0070] Example 10 discloses a polishing device.

[0071] like Figure 1 and Figure 2 As shown, a polishing device includes a frame 1, a conveyor belt 2 and a polishing mechanism 3. The frame 1 is in the shape of a box and is set through the top. Three pulleys 21 are rotatably set on the inner wall of the frame 1. The frame 1 is also fixedly connected with a first driving device 22, which is a motor and is fixedly connected to a pulley 21; the conveyor belt 2 is installed between the three pulleys 21 and arranged in a triangle, and the top wall of the conveyor belt 2 extends out of the frame 1 and is set obliquely. A loading piece 4 and a receiving piece 5 are also installed on the frame 1. The loading piece 4 is located at the top of the top wall of the conveyor belt 2, and the receiving piece 5 is located at the bottom of the top wall of the conveyor belt 2.

[0072] like Figure 2 and Figure 3As shown, the polishing mechanism 3 in this embodiment includes a cover shell 31, a rotating roller 32 and polishing bristles 33. The top wall of the frame 1 is fixedly connected with the enclosure 11 at both ends perpendicular to the moving direction of the top wall of the conveyor belt 2. The cover shell 31 is fixedly connected to the top of the two enclosures 11 and is located above the conveyor belt 2. The bottom wall of the cover shell 31 is parallel to the top wall of the conveyor belt 2, and a feeding cavity 34 is formed between the bottom wall of the cover shell 31, the top wall of the conveyor belt 2 and the two enclosures 11; the feeding piece 4 and the receiving piece 5 are both in communication with the feeding cavity 34. Three clearance slots 35 are formed through the bottom wall of the cover shell 31. The three clearance slots 35 are all rectangular in shape. The length direction of the three clearance slots 35 extends perpendicular to the transmission direction of the top wall of the conveyor belt 2, and a plurality of clearance slots 35 are arranged along the inclined direction of the top wall of the conveyor belt 2.

[0073] like Figure 1 and Figure 2 As shown, the rollers 32 and the clearance grooves 35 are arranged in a one-to-one correspondence, and the rollers 32 are rotatably arranged on the opposite inner side walls of the cover 31, and the axial direction of the rollers 32 is in the same direction as the length direction of the clearance grooves 35; a second driving device 36 is installed on the cover 31, and the second driving device 36 can be a motor. Each roller 32 corresponds to a second driving device 36 and is fixedly connected to the driving end of the second driving device 36.

[0074] like Figure 2 and Figure 3 As shown, the roller 32 in this embodiment is also arranged along the inclined direction of the top wall of the conveyor belt 2 and the bottom end extends out of the clearance groove 35. The polishing bristles 33 are fixedly connected to the circumferential wall of the roller 32, and there is a gap between the polishing bristles 33 and the groove wall of the clearance groove 35, that is, the polishing bristles 33 do not contact the groove wall of the clearance groove 35. At the same time, a cleaning device 6 for cleaning waste chips on the polishing bristles 33 is provided in the housing 31.

[0075] like Figure 4 As shown, the feeding member 4 in this embodiment includes a hopper 41 and a feeding pipe 42. The hopper 41 is fixedly connected to the frame 1. The feeding pipe 42 is connected to the discharge pipe of the hopper 41. The feeding pipe 42 is a flat square tube. The end of the feeding pipe 42 away from the hopper 41 is fixedly connected to the frame 1 and the cover 31. The end of the feeding pipe 42 away from the hopper 41 is connected to the feed end of the feeding cavity 34. In this embodiment, a feeding meter is provided on the discharge pipe of the hopper 41. In this embodiment, the material receiving member 5 includes a receiving pipe 51, which is fixedly connected to the frame 1 and is located below the discharge end of the conveyor belt 2.

[0076] The first driving device 22 and the second driving device 36 are started, so that the top wall of the conveyor belt 2 moves downward in an inclined direction, and the bottom end of the roller 32 rotates in the opposite direction to the conveyor belt 2. Then the material is added to the hopper 41, and the material enters the feeding cavity 34 evenly through the feeding meter and the feeding pipe 42. The material moves downward under the conveying action of the conveyor belt 2, and the polishing soft hair 33 pushes the material upward, so that the material is continuously rubbed by the polishing soft hair 33 while moving downward, so that the material is polished for a period of time in the feeding cavity 34. During this process, the cleaning device 6 cleans the waste residue adhering to the polishing soft hair 33, and finally the material is discharged through the receiving pipe 51.

[0077] like Figure 3 and Figure 4 As shown, the cleaning device 6 in this embodiment includes a storage tube 61, a baffle 62, a paddle plate 63 and a support plate 64. The storage tube 61 is fixedly mounted on the inner wall of the cover shell 31, and the storage tube 61 and the roller 32 are arranged in a one-to-one correspondence. The storage tube 61 is located on the side of the corresponding roller 32 away from the hopper 41, and a chip collecting groove 65 is penetrated through the side of the storage tube 61 facing the corresponding roller 32. The baffle 62 is fixedly connected to the storage tube 61 at the top of the chip collecting groove 65, and the support plate 64 is fixedly connected to the storage tube 61 at the bottom of the chip collecting groove 65; and in this embodiment, the baffle 62 is located above the support plate 64 and has a gap of 1-2 mm between it and the polishing bristles 33, the end of the support plate 64 away from the storage tube 61 abuts against the polishing bristles 33, and the end of the support plate 64 away from the storage tube 61 is located below the central axis of the roller 32. One end of the toggle piece 63 is fixedly connected to the inner wall of the storage tube 61 . The toggle piece 63 is located between the baffle 62 and the supporting piece 64 and is arranged close to the baffle 62 . The free end of the toggle piece 63 is inclined downward and abuts against the polishing bristles 33 .

[0078] like Figure 5 As shown, in this embodiment, both sides of the storage tube 61 are fixedly connected with sealing plates 66, the baffle 62 and the support plate 64 are fixedly connected to the side walls of the sealing plates 66, and the end of the sealing plates 66 away from the storage tube 61 is an arc with the same center as the roller 32, and the circumferential wall opposite to the roller 32 and the sealing plates 66 is provided with a sealing groove 67, and the arc end of the sealing plates 66 is inserted into the sealing groove 67 and abuts against the sealing groove 67, so the sealing plates 66 are rotatably connected to the roller 32 through the sealing groove 67. At the same time, the storage tube 61 is also connected to the exhaust member 7.

[0079] Start the exhaust member 7, and the air flow in the receiving tube 61 is continuously discharged outward; after the polishing bristles 33 polish the material, the polishing bristles 33 carry the waste chips into the cover shell 31, and then the polishing bristles 33 turn around the baffle 62, and then the polishing bristles 33 are bent by the toggle plate 63 when passing through the toggle plate 63. Therefore, after passing over the toggle plate 63, the polishing bristles 33 return to their original shape and shake, and the waste chips are shaken off and sucked away by the exhaust member 7. Finally, the polishing bristles 33 pass through the baffle 62 and the give-way slot 35 into the feed cavity 33 to continue the polishing work.

[0080] like Figure 5 As shown, the air extraction member 7 in this embodiment includes a connecting tube 71 and an air extraction tube 72, each receiving tube 61 is connected to a connecting tube 71, all the connecting tubes 71 are collected and connected to an air extraction tube 72, and an air pump 73 is installed at one end of the air extraction tube 72 away from the connecting tube 71. Therefore, when the air pump 73 is started, the receiving tube 61 can be exhausted through the air extraction tube 72 and the connecting tube 71.

[0081] like Figure 5 and Figure 6 As shown, in order to facilitate the replacement of damaged polishing bristles 33, in this embodiment, a detachable component 8 is connected between the polishing bristles 33 and the roller 32. The detachable component 8 includes a detachable sheet 81, a fixing rod 82, a fixing electromagnet 83 and a fixing magnet 84. The polishing bristles 33 are fixedly connected to one side wall of the detachable sheet 81, and the side wall of the detachable sheet 81 that is away from the polishing bristles 33 is wrapped around the roller 32. A fixing groove 85 is provided on the peripheral wall of the roller 32, and the fixing groove 85 runs through both ends of the roller 32 in the axial direction; the fixing rod 82 is fixedly connected to one end of the detachable sheet 81 along the circumference of the roller 32, and the fixing rod 82 is inserted into the fixing groove 85 and abuts against the groove wall of the fixing groove 85.

[0082] like Figure 5 and Figure 6 As shown, the fixed electromagnet 83 is installed on the groove wall of the fixed groove 85 facing the groove; the fixed magnet 84 is installed on the side wall of the end of the fixed rod 82 away from the detachable sheet 81, and the fixed electromagnet 83 and the fixed magnet 84 are magnetically connected. The end of the detachable sheet 81 away from the fixed rod 82 is bonded to the roller 32 by the Velcro 86; the frame 1 is provided with a retractable assembly 9 for retracting the detachable sheet 81. Therefore, the fixed electromagnet 83 is energized, the fixed electromagnet 83 and the fixed magnet 84 are magnetically connected, the fixed rod 82 can be fixed on the roller 32, and then the detachable sheet 81 can be stably installed on the roller 32 with the Velcro 86. When the detachable sheet 81 needs to be removed, the fixed electromagnet 83 is powered off, and then the Velcro 86 is torn open by the retractable assembly 9 to take out the detachable sheet 81.

[0083] As shown Figure 7 and Figure 8As shown, the retractable assembly 99 includes a movable frame 91, a shaping roller 92, and a positioning rod 99. The frame 1 is fixedly connected to a mounting frame 93 at a position outside the cover shell 31. Three third driving devices 94 are installed on the mounting frame 93. The three third driving devices 94 are used to drive the movable frame 91 to slide in the vertical direction. The movable frame 91 and the detachable piece 81 are arranged in a one-to-one correspondence.

[0084] like Figure 7 and Fig. 9 As shown, each third driving device 94 in this embodiment includes a guide rod 941 slidingly arranged on the top wall of the mounting frame 93 in the vertical direction, a driving screw 942 penetrating the top wall of the mounting frame 93 and sliding in the vertical direction, and a driving screw ring 943 rotatably arranged on the top wall of the mounting frame 93, the driving screw ring 943 and the driving screw 942 are threadedly connected, and a first bevel gear 944 is fixedly connected to the outer wall of the driving screw ring 943, a first motor 945 is installed on the top wall of the mounting frame 93, and a first driving bevel gear 946 is fixedly connected to the driving end of the first motor 945, and the first driving bevel gear 946 is meshed with the first bevel gear 944. Moreover, in this embodiment, a connecting plate 95 is connected to the bottom ends of the driving screw rod 942 and the guide rod 941, and the movable frame 91 includes a first side plate 911 fixedly connected to the connecting plate 95, and a second side plate 913 connected to the first side plate 911 through the connecting plate 912, and the first side plate 911 and the second side plate 913 are arranged opposite to each other in a horizontal direction perpendicular to the axial direction of the roller 32. A moving through groove 311 for the movable frame 91 to enter and exit is penetrated on the top wall of the housing 31, and a closing plate 312 is slidably arranged on the top wall of the housing 31, and the closing plate 312 is used to close the moving through groove 311.

[0085] like Figure 8 and Fig. 9 As shown, two shaping rollers 92 form a group, and there are at least two groups of shaping rollers 92. In this embodiment, there are three groups of shaping rollers 92; the three groups of shaping rollers 92 are rotatably connected to the mobile frame 91 and arranged in the vertical direction, and the two shaping rollers 92 in each group are opposite to each other in the horizontal direction. In this embodiment, one shaping roller 92 in each group is rotatably connected to the first side plate 911, and the other shaping roller 92 in each group is rotatably connected to the second side plate 913, and a sliding channel 96 for the detachable sheet 81 to slide is formed between the two shaping rollers 92. Two clamping plates 97 are slidably provided at the bottom end of the mobile frame 91, and the two clamping plates 97 slide relatively along the axial direction of the rotating roller 32. The mobile frame 91 is also provided with a driving member 98 for driving the clamping plates 97 to slide.

[0086] like Figure 8 and Fig.10As shown, the positioning rod 99 is integrally connected to the end walls of the fixing rod 82, and the positioning rod 99 extends out of the fixing groove 85 along the radial direction of the roller 32. The end of the positioning rod 99 away from the fixing rod 82 is fixedly connected to a clamping block 97, and clamping grooves 98 are provided on the opposite side walls of the two clamps 97. Moreover, the driving member 98 in this embodiment includes a feed screw 961 and a driving screw block 962. A base block 963 is fixedly connected to the bottom end of the movable frame 91. The feed screw 961 is rotatably connected to the base block 963 and the screw threads on both sides are in opposite directions. A servo motor 964 is also fixedly connected to the movable frame 91. The driving end of the servo motor 964 is fixedly connected to a second driving bevel gear 965. The feed screw 961 is fixedly connected to a third driving bevel gear 966, and the second driving bevel gear 965 is meshed with the third driving bevel gear 966; the driving screw block 962 is fixedly connected to the side wall of the clamping plate 97, and the feed screw 961 passes through the driving screw block 962 and is threadedly connected to the driving screw block 962.

[0087] When the detachable sheet 81 needs to be installed on the roller 32, the detachable sheet 81 is first laid flat between the corresponding shaping rollers 92 of each group, the fixed rod 82 extends to the bottom end of the mobile frame 91, and the polishing soft hair 33 is away from the feeding piece 4. The servo motor 964 is started, and the thread feed occurs between the driving screw 942 and the driving screw block 962, and the two clamping plates 97 clamp the fixed rod 82, and the clamping block 97 and the groove wall of the clamping groove 98 are abutted. Then the closing plate 312 is slid away from the moving through groove 311, and the first motor 945 is started, so that the driving screw 942 and the driving screw ring 943 are threadedly connected, and the mobile frame 91 moves down, carrying the detachable sheet 81 into the cover 31, until the fixed rod 82 is inserted into the fixed groove 85 of the roller 32, and then the fixed electromagnet 83 is energized, so that the fixed electromagnet 83 and the fixed magnetic block are magnetically connected, and the fixed rod 82 is fixed in the fixed groove 85, and then the clamping plate 97 is away from the positioning rod 99. The second driving device 36 is started to slowly rotate the roller 32 along the direction of rotation during polishing, so that the removable sheet 81 between the shaping rollers 92 is slowly wrapped around the roller 32, and then, under the smoothing effect of the last shaping roller 92, the end of the removable sheet 81 away from the fixed rod 82 is adhered to the roller 32 through the Velcro 86. Finally, the clamping plate 97 is moved away from the positioning rod 99, and the moving frame 91 is moved up, so that the closing plate 312 closes the moving through slot 311.

[0088] When the detachable piece 81 needs to be removed, the roller 32 is rotated to the position facing the fixed groove 85, the closing plate 312 is slid to open the movable through groove 311, and the movable frame 91 is moved downward so that the clamping plate 97 moves to a position opposite to the positioning rod 99; then the servo motor 964 is started, the feed screw 961 and the drive screw block 962 are threadedly fed, and the two clamping plates 97 move toward the positioning rod 99 and clamp the fixed rod 82, the fixed electromagnet 83 is powered off, and the movable frame 91 is moved upward so that the fixed rod 82 moves out of the fixed groove 85; then the second drive device 36 is started, so that the movable frame 91 moves upward and the roller 32 rotates, so that the detachable piece 81 slowly leaves the roller 32, and finally the movable frame 91 brings the detachable piece 81 out of the cover 31.

[0089] The working principle of a polishing device in the embodiment of the present application is as follows: start the first driving device 22 and the second driving device 36, so that the top wall of the conveyor belt 2 moves downward in the inclined direction, and the bottom end of the roller 32 rotates in the opposite direction of the conveyor belt 2, and at the same time start the air pump 73, and the receiving tube 62 is in a state of exhausting air. Then the material is added to the hopper 41, and the material enters the feeding cavity 34 evenly through the feeding meter 43 and the feeding tube 42, and the material is polished by the polishing bristles 33 in the feeding cavity 34. In this process, when the polishing bristles 33 pass over the toggle plate 63, the waste chips are shaken off and sucked away by the receiving tube 62, and the polishing bristles 33 enter the feeding cavity 33 to continue the polishing work. The polished material enters the receiving tube 51 and is discharged.

[0090] Comparative Example 1

[0091] The difference between Comparative Example 1 and Example 1 is that: a method for preparing a desiccant for hollow glass comprises the following steps: preparation of semi-finished product particles: using the shell raw materials in Example 1, the raw materials are mixed evenly according to a proportion to obtain a mixture; then the mixture is added to a ball forming machine, the ball forming machine is rotated at a speed of 20±2 rpm, and water mist is sprayed into the premixed powder at a speed of 0.4±0.1㎡ / s to obtain semi-finished product particles;

[0092] Polishing: Polish the semi-finished particles to obtain intermediate particles;

[0093] Low temperature drying: drying the intermediate pellets at 170-180°C to remove 23-24wt% of the water;

[0094] High temperature calcination: The dried intermediate particles are calcined at a temperature of 870-880°C to obtain a desiccant having a moisture content of 4-5.2wt% and a particle size of 0.5-0.9mm.

[0095] Comparative Example 2

[0096] The difference between Comparative Example 2 and Example 1 is that the aluminum hydroxide powder is replaced with an equal amount of bauxite powder.

[0097] Comparative Example 3

[0098] The difference between Comparative Example 3 and Example 1 is that the bauxite powder is replaced with an equal amount of aluminum hydroxide powder.

[0099] Performance Testing

[0100] The performance of the desiccants of Examples 1-9 and Comparative Examples 1-3 was tested as follows:

[0101] Crushing resistance test: According to the test method in JC / T2072-2011 "Desiccant for Insulating Glass", the polarity crushing resistance of the desiccant is tested.

[0102] Powder fall test: Test according to method 5.12 in GB / T10504-2017 "3A Molecular Sieve". The test results are shown in Table 2 Table 2 Performance test table of desiccant

[0103]

[0104]

[0105] It can be seen from the test results of Examples 1-9 that the desiccant prepared in the present application has good strength and low powder falling degree; however, it can be seen from the test results of Example 1, Example 4 and Example 5 that although the powder falling degree of Example 4 and Example 5 is still ≤0.02 mg / g, the strength has decreased, indicating that the amount of aluminum hydroxide powder and bauxite powder has an effect on the performance of the desiccant. At the same time, it can be seen from the test results of Comparative Examples 2 and 3 that the addition of aluminum hydroxide powder and bauxite powder has a great improvement on the strength and powder falling degree of the desiccant. It can be seen from the test results of Example 6 and Example 8 that the raw material selection of adhesives and binders will affect the strength of the desiccant. It can be seen from the test results of Example 9 and Comparative Example 1 that the result of the outer shell of the desiccant wrapping the inner core has a certain effect on the performance of the desiccant.

[0106] This specific embodiment is merely an explanation of the present application and is not a limitation of the present application. After reading this specification, those skilled in the art may make modifications to the present embodiment without any creative contribution as needed, but such modifications are protected by the patent law as long as they are within the scope of the claims of the present application.

Claims

1. A desiccant for insulating glass, characterized in that: It comprises an inner core and an outer shell wrapped around the inner core; the inner core is made of the following raw materials in parts by weight: 16-25 parts of 4A molecular sieve powder, 1-5 parts of aluminum hydroxide powder, 3-7 parts of bauxite powder, and 5-11 parts of a binder; the outer shell is made of the following raw materials in parts by weight: 14-22 parts of 3A molecular sieve powder, 6-12 parts of aluminum hydroxide powder, 1-4 parts of bauxite powder, and 3-9 parts of a binder; The binder comprises at least one of high clay, kaolin, montmorillonite, ramie clay, halloysite, antigen clay, and bentonite; The adhesive comprises at least one of high clay, kaolin, montmorillonite, montmorillonite, halloysite, anti-antigen clay and bentonite.

2. The desiccant for insulating glass according to claim 1, characterized in that: The particle size of the desiccant is 0.5-0.9 mm, and the crushing resistance of the desiccant is 5-6 N / particle.

3. The desiccant for insulating glass according to claim 1, characterized in that: The powder falling degree of the desiccant is ≤0.02 mg / g.

4. A method for preparing a desiccant for insulating glass according to any one of claims 1 to 3, characterized in that: The following steps are involved: Inner core preparation: mixing raw materials of the inner core to obtain a first mixed material, and granulating the first mixed material to obtain inner core particles; Shell coating: mixing the shell raw materials to obtain a second mixed material, and coating the second mixed material on the inner core particles to obtain semi-finished particles; Polishing: Polish the semi-finished particles to obtain intermediate particles; Low temperature drying: drying the intermediate particles at a temperature of 160-190°C; High temperature calcination: calcine the dried intermediate particles at a temperature of 840-880°C to obtain a desiccant.

5. The method for preparing a desiccant for insulating glass according to claim 4, characterized in that: When polishing semi-finished particles, polishing is performed using a polishing device, the polishing device comprising a frame (1), a conveyor belt (2) and a polishing mechanism (3), the conveyor belt (2) being rotatably connected to the frame (1), the frame (1) being provided with a first driving device (22) for driving the conveyor belt (2) to rotate, the top wall of the conveyor belt (2) being arranged obliquely and moving downward, the frame (1) being provided with a loading piece (4) at the top end of the conveyor belt (2), and the frame (1) being provided with a receiving piece (5) at the bottom end of the conveyor belt (2); the polishing mechanism (3) comprising a cover shell (31), a rotating roller (32) and polishing bristles (33), the cover shell (31) being arranged on the frame (1) and being located above the conveyor belt (2), the bottom wall of the cover shell (31) being parallel to the top wall of the conveyor belt (2) and being in contact with the top wall of the conveyor belt (2). A feeding cavity (34) is formed between the bottom walls of the conveyor belt (2); a plurality of clearance grooves (35) are formed through the bottom wall of the cover shell (31); the plurality of clearance grooves (35) are arranged along the inclined direction of the top wall of the conveyor belt (2); the rollers (32) and the clearance grooves (35) are arranged one by one and rotatably arranged on the inner wall of the cover shell (31); a second driving device (36) for driving the rollers (32) to rotate is arranged on the cover shell (31); the rollers (32) are arranged along the inclined direction of the top wall of the conveyor belt (2) and the bottom ends extend out of the clearance grooves (35); the polishing bristles (33) are arranged on the circumferential wall of the rollers (32) and there is a gap between the polishing bristles (33) and the groove wall of the clearance grooves (35); and a cleaning device (6) for cleaning waste chips on the polishing bristles (33) is arranged in the cover shell (31).

6. The method for preparing a desiccant for insulating glass according to claim 5, characterized in that: The cleaning device (6) comprises a storage tube (61), a baffle (62), a toggle plate (63) and a support plate (64); the storage tube (61) is arranged in the housing (31) and is arranged one-to-one with the rotating roller (32); the storage tube (61) is located on the side of the rotating roller (32) away from the loading member (4); a chip collecting groove (65) is provided through the storage tube (61) on the side facing the rotating roller (32); the baffle (62) is arranged at the top of the storage tube (61) at the top of the chip collecting groove (65); the support plate (64) is arranged at the bottom of the storage tube (61) at the bottom of the chip collecting groove (65); the baffle (62) is located above the support plate (64) and between the polishing bristles (33). There is a gap between the two ends of the receiving tube (61), and the end of the supporting plate (64) away from the receiving tube (61) is in contact with the polishing bristles (33); the shifting plate (63) is arranged on the inner wall of the receiving tube (61), and the shifting plate (63) is located between the blocking plate (62) and the supporting plate (64) and is arranged close to the blocking plate (62), and the end of the shifting plate (63) away from the receiving tube (61) is in contact with the polishing bristles (33); sealing plates (66) are arranged on both sides of the receiving tube (61), and the blocking plate (62) and the supporting plate (64) are both sealed and connected to the sealing plates (66), and the end of the sealing plate (66) away from the receiving tube (61) is rotatably connected to the rotating roller (32); the receiving tube (61) is also connected to an exhaust member (7).

7. The method for preparing a desiccant for insulating glass according to claim 5, characterized in that: The polishing bristles (33) are mounted on the rotating roller (32) via a detachable component (8); the detachable component (8) comprises a detachable sheet (81), a fixing rod (82), a fixing electromagnet (83) and a fixing magnet (84); the polishing bristles (33) are arranged on a side wall of the detachable sheet (81); a side wall of the detachable sheet (81) facing away from the polishing bristles (33) is wrapped around the rotating roller (32); a fixing groove (85) is arranged on the peripheral wall of the rotating roller (32); the fixing rod (82) is fixedly connected to the detachable sheet (81); ) along one end of the circumference of the rotating roller (32), the fixing rod (82) is inserted into the fixing groove (85), the fixing electromagnet (83) is arranged on the groove wall of the fixing groove (85), the fixing magnet (84) is arranged on the fixing rod (82), and the fixing electromagnet (83) and the fixing magnet (84) are magnetically connected; a Velcro (86) is arranged between one end of the detachable sheet (81) away from the fixing rod (82) and the rotating roller (32); and a retracting assembly (9) for retracting and releasing the detachable sheet (81) is arranged on the frame (1).

8. The method for preparing a desiccant for insulating glass according to claim 7, characterized in that: The retractable assembly (9) comprises a movable frame (91), a shaping roller (92), and a positioning rod (99); the movable frame (91) is slidably arranged on the frame (1) in a vertical direction; a third driving device (94) for driving the movable frame (91) to slide is arranged on the frame (1); the movable frame (91) and the detachable sheet (81) are arranged in a one-to-one correspondence and are located above the cover shell (31); a movable through groove (311) for the movable frame (91) to enter and exit is penetrated on the top wall of the cover shell (31); a closing plate (312) for closing the movable through groove (311) is slidably arranged on the cover shell (31); the two shaping rollers (92) form a group There are at least two groups of shaping rollers (92), at least two groups of shaping rollers (92) are rotatably arranged on the movable frame (91) and arranged in a vertical direction, each group of shaping rollers (92) are opposite to each other in a horizontal direction, and a sliding channel (96) for the detachable sheet (81) to slide is formed between the two shaping rollers (92); the positioning rods (99) are arranged at both ends of the fixed rod (82), the positioning rods (99) extend out of the fixed groove (85), the movable frame (91) is slidingly provided with clamping plates (97) corresponding to the positioning rods (99), and the movable frame (91) is provided with a driving member (98) for driving the two clamping plates (97) to slide relative to each other.

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