Ultrahigh-temperature heat insulation slurry mixing method

Abstract

The invention discloses an ultrahigh-temperature heat-insulation slurry mixing method applied to the field of slurry mixing, and the method comprises the following steps: raising ceramic powder in a mixing kettle through a stirring rod, and adding an adhesive into the mixing kettle in a dripping manner, so that the adhesive knocks down the ceramic powder floating in the mixing kettle in the descending process, and the ceramic powder is uniformly mixed; according to the ceramic powder mixing device, the adhesive can be preliminarily mixed with the ceramic powder better, the subsequent mixing time of the adhesive and the ceramic powder is indirectly shortened, the stirring efficiency is improved, the ceramic powder is mixed with the adhesive in a floating mode, the phenomenon that the ceramic powder huddles during mixing is greatly avoided, the mixing effect is further improved, and the service life of the ceramic powder is prolonged. And through the arrangement of the residual powder recovery device, the residual floating ceramic powder in the mixing kettle can be repeatedly collected and sprayed to the surface of the adhesive for secondary mixing, so that the situation that the ceramic powder cannot be completely mixed is avoided, and the mixing effect can be improved again.

Description

Technical Field

[0001] The present application relates to the field of slurry mixing, and in particular to a method for mixing ultra-high temperature insulation slurry. Background Art

[0002] The thermal insulation slurry is a slurry made of nano-ceramic powders such as zirconium oxide, aluminum oxide, magnesium oxide, and titanium oxide mixed with a binder. Chinese patent application number CN202010250429.1 discloses a high-viscosity nano-powder slurry mixing device. The high-viscosity nano-powder slurry mixing device adopted has a top stirring paddle and a bottom stirring paddle in the device that can shear the flow field circulating up and down, and the staggered blades on the top stirring paddle and the bottom stirring paddle can produce a strong shear mixing effect, thereby improving the mixing uniformity of the high-viscosity slurry.

[0003] When mixing the slurry, first add the adhesive to the kettle, then pour the ceramic powder into the kettle, and rotate the stirring rod to mix. Ceramic powders are usually mixed with air, and are easy to clump into balls when mixed. When the powders clump into balls, it will increase the difficulty of mixing. The phenomenon of powder clumping cannot be fundamentally avoided by simply increasing the mixing shear degree, resulting in poor final mixing effect, so further improvement is needed. Summary of the invention

[0004] The purpose of the present application is to improve the mixing effect of ceramic powder and adhesive, avoid the situation that ceramic powder is clumped during mixing, and provide a method for mixing ultra-high temperature insulation slurry compared with the prior art, including the following steps:

[0005] S1, putting nano-grade ceramic powders such as zirconium oxide, aluminum oxide, magnesium oxide, and titanium oxide into a mixing kettle;

[0006] S2, the stirring rod rotates to lift the ceramic powder inside the mixing kettle, so that the ceramic powder floats inside the mixing kettle, and then the stirring rod stops rotating;

[0007] S3, start the raindrop pump to pump the adhesive into the top of the mixing kettle in sections and let it fall in the shape of raindrops;

[0008] S4, the falling adhesive is fully integrated with the ceramic powder floating in the mixing kettle, and after the adhesive is discharged, the stirring rod is rotated to stir, and the finished product is discharged after the mixing is completed;

[0009] The top of the mixing kettle is fixedly connected with a driving machine, a feeding pipe and a powder pipe, the stirring rod is located on the inner side of the mixing kettle, and the output end of the driving machine is fixedly connected to the top of the stirring rod, the inner wall of the top of the mixing kettle is fixedly connected with a hollow plate, the bottom end of the feeding pipe is fixedly connected to the hollow plate, a through hole is provided in the hollow plate near the powder pipe and the stirring rod, and the bottom ends of the powder pipe and the stirring rod pass through the corresponding through holes, a plurality of evenly distributed drip holes are provided on the bottom surface of the hollow plate, the output end of the raindrop pump is fixedly connected with a liquid outlet pipe, the top end of the liquid outlet pipe is fixedly connected to the feeding pipe, and the input end of the raindrop pump is fixedly connected with a liquid inlet pipe.

[0010] Optionally, the raindrop pump includes a shell, a circular inner cavity is opened inside the shell, the inner wall of the inner cavity is rotatably connected to a rotating shaft, and the outer wall of the rotating shaft is fixedly connected to a cylinder.

[0011] Optionally, a plurality of evenly distributed extrusion plates are fixedly connected to the outer wall of the cylinder, and the extrusion plates are in the shape of arc-shaped long strips. A rubber tube is fixedly connected to the inner wall of the inner cavity, and both ends of the rubber tube extend to the outside of the outer shell. The extrusion plate is tightly attached to the rubber tube. The right end of the rubber tube is the input end of the raindrop pump and is fixedly connected to the liquid inlet pipe. The left end of the rubber tube is the output end and is fixedly connected to the liquid outlet pipe.

[0012] Optionally, a motor is fixedly connected to the outer wall of the shell, and the output end of the motor is fixedly connected to one end of the rotating shaft. By setting a raindrop pump, the adhesive can intermittently drip downward through the drip hole. The dripping adhesive increases the contact area with the ceramic powder, so that the adhesive and ceramic powder are mixed more fully.

[0013] Optionally, the outer wall of the stirring rod is fixedly connected with a plurality of evenly distributed dust-raising plates, and the side walls of the dust-raising plates are provided with a plurality of resistance-reducing holes. Through the above arrangement, when the stirring rod rotates to lift the ceramic powder in the mixing kettle, the dust-raising plates can generate greater wind force and can better lift the powder.

[0014] Optionally, the side wall of the mixing kettle is provided with two symmetrically arranged residual powder recovery devices, and the residual powder recovery devices include air ducts.

[0015] Optionally, the air duct is fixedly connected to the side wall of the mixing kettle, and a filter screen is fixedly connected to the inner wall of the air duct.

[0016] Optionally, a forward and reverse exhaust fan is provided on one side of the mixing kettle, one end of the forward and reverse exhaust fan is fixedly connected to the upper inlet and outlet pipe, and the other end of the forward and reverse exhaust fan is fixedly connected to the lower inlet and outlet pipe.

[0017] Optionally, one end of the upper inlet and outlet pipe is fixedly connected to the air duct on the left, and one end of the lower inlet and outlet pipe is fixedly connected to the air duct on the right. After the adhesive is added, some ceramic powder may still float inside the mixing kettle. Through the above arrangement, the remaining adhesive can be blown to the surface of the adhesive for mixing.

[0018] Optionally, the air duct is arranged in an inclined shape, and one end of the air duct close to the mixing kettle is lower than the other end of the air duct. Through the above arrangement, when the ceramic powder is blown from the air duct to the inside of the mixing kettle, the ceramic powder can be blown onto the surface of the adhesive, which can better make the ceramic powder contact with the adhesive.

[0019] Compared with the prior art, the advantages of this application are:

[0020] (1) This method first lifts the ceramic powder inside the mixing kettle through a stirring rod, and then drips the adhesive into the mixing kettle, so that the adhesive knocks down the ceramic powder floating in the mixing kettle during the descent, so that the adhesive can be better mixed with the ceramic powder for preliminary mixing, which indirectly reduces the subsequent mixing time of the adhesive and the ceramic powder, improves the stirring efficiency, and makes the ceramic powder mixed with the adhesive in a floating form, which greatly avoids the phenomenon of ceramic powder clumping during mixing, further improving the mixing effect. In addition, through the setting of the residual powder recovery device, the floating ceramic powder remaining in the mixing kettle can be repeatedly collected and sprayed onto the surface of the adhesive for secondary mixing, avoiding the situation that the ceramic powder cannot be completely mixed, and the mixing effect can be further improved.

[0021] (2) A motor is fixedly connected to the outer wall of the shell, and the output end of the motor is fixedly connected to one end of the rotating shaft. By setting a raindrop pump, the adhesive can intermittently drip downward through the drip hole. The dripping adhesive increases the contact area with the ceramic powder, so that the adhesive and ceramic powder are mixed more fully.

[0022] (3) The outer wall of the stirring rod is fixedly connected with a plurality of evenly distributed dust-raising plates, and the side walls of the dust-raising plates are provided with a plurality of resistance-reducing holes. Through the above arrangement, when the stirring rod rotates to raise the ceramic powder in the mixing kettle, the dust-raising plates can generate greater wind force and can better raise the powder.

[0023] (4) One end of the upper inlet and outlet pipe is fixedly connected to the air duct on the left, and one end of the lower inlet and outlet pipe is fixedly connected to the air duct on the right. After the adhesive is added, some ceramic powder may still float inside the mixing kettle. Through the above arrangement, the remaining adhesive can be blown to the surface of the adhesive for mixing.

[0024] (5) The air duct is arranged in an inclined shape, and one end of the air duct close to the mixing kettle is lower than the other end of the air duct. Through the above arrangement, when the ceramic powder is blown from the air duct to the inside of the mixing kettle, the ceramic powder can be blown onto the surface of the adhesive, which can better enable the ceramic powder to contact with the adhesive. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is the appearance diagram of this application;

[0026] Figure 2 It is a front cross-sectional view of the present application;

[0027] Figure 3 This is a front cross-sectional view of the hollow plate of this application;

[0028] Figure 4 This is a state diagram of the adhesive dripping for this application;

[0029] Figure 5 This is a top view of the hollow plate of this application;

[0030] Figure 6 This is a bottom-up stereogram of the hollow plate in this application;

[0031] Figure 7 It is a side cross-sectional stereoscopic view of the hollow plate of the present application;

[0032] Figure 8 This is a top-down sectional stereoscopic view of the hollow plate of this application;

[0033] Fig. 9 A side cross-sectional view of the housing of the present application;

[0034] Fig.10 This is a top view of the housing of the present application.

[0035] Description of the numbers in the figure:

[0036] 1. Mixing kettle; 2. Shell; 201. Liquid outlet pipe; 202. Motor; 203. Inner cavity; 3. Positive and negative exhaust fan; 301. Upper inlet and outlet pipe; 302. Lower inlet and outlet pipe; 4. Stirring rod; 401. Driving machine; 5. Feeding pipe; 6. Hollow plate; 601. Drip hole; 7. Powder tube; 8. Dust plate; 801. Resistance reduction hole; 9. Rotating shaft; 10. Cylinder; 1001. Extrusion plate; 11. Rubber tube; 12. Liquid inlet pipe; 13. Air duct; 1301. Filter. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0038] The first implementation method:

[0039] See also Figure 1-10 The present application discloses a method for mixing an ultra-high temperature insulation slurry, comprising the following steps:

[0040] S1, putting nano-grade ceramic powders such as zirconium oxide, aluminum oxide, magnesium oxide, and titanium oxide into a mixing kettle 1;

[0041] S2, the stirring rod 4 rotates to lift the ceramic powder inside the mixing kettle 1, so that the ceramic powder floats inside the mixing kettle 1, and then the stirring rod 4 stops rotating;

[0042] S3, start the raindrop pump to pump the adhesive into the top of the mixing kettle 1 in sections and let it fall in the shape of raindrops;

[0043] S4, the falling adhesive is fully integrated with the ceramic powder floating in the mixing kettle 1, and after the adhesive is discharged, the stirring rod 4 rotates to stir, and the finished product is discharged after the mixing is completed;

[0044] The top of the mixing kettle 1 is fixedly connected with a driving machine 401, a feeding pipe 5 and a powder pipe 7, the stirring rod 4 is located on the inner side of the mixing kettle 1, and the output end of the driving machine 401 is fixedly connected to the top of the stirring rod 4, the inner wall of the top of the mixing kettle 1 is fixedly connected with a hollow plate 6, the bottom end of the feeding pipe 5 is fixedly connected to the hollow plate 6, the hollow plate 6 is provided with a through hole near the powder pipe 7 and the stirring rod 4, and the bottom ends of the powder pipe 7 and the stirring rod 4 pass through the corresponding through holes, the bottom surface of the hollow plate 6 is provided with a plurality of evenly distributed drip holes 601, the output end of the raindrop pump is fixedly connected with a liquid outlet pipe 201, the top of the liquid outlet pipe 201 is fixedly connected to the feeding pipe 5, and the input end of the raindrop pump is fixedly connected with a liquid inlet pipe 12;

[0045] Ceramic powder can be put into the interior of the mixing kettle 1 through the powder pipe 7, the driving machine 401 can drive the stirring rod 4 to rotate, and the raindrop pump can extract the adhesive through the liquid inlet pipe 12 and discharge it into the interior of the hollow plate 6 through the liquid outlet pipe 201 and the feed pipe 5, so that the adhesive drips downward. This method uses the stirring rod 4 to first lift the ceramic powder inside the mixing kettle 1, and then drips the adhesive into the mixing kettle 1. During the descent, the adhesive knocks down the ceramic powder floating in the mixing kettle 1, so that the adhesive can be better mixed with the ceramic powder for preliminary mixing, indirectly reducing the subsequent mixing time of the adhesive and the ceramic powder, improving the stirring efficiency, and making the ceramic powder mixed with the adhesive in a floating form, which greatly avoids the phenomenon of ceramic powder agglomeration during mixing, further improving the mixing effect, and through the setting of the residual powder recovery device, the floating ceramic powder remaining in the mixing kettle 1 can be repeatedly collected and sprayed onto the surface of the adhesive for secondary mixing, avoiding the situation where the ceramic powder cannot be completely mixed, and the mixing effect can be improved again.

[0046] The second implementation method:

[0047] The components identical or corresponding to those in Example 1 are marked with the same reference numerals as those in Example 1. For the sake of simplicity, only the differences from Example 1 are described below. The differences between Example 2 and Example 1 are as follows:

[0048] See also Figure 4 and 9 -10, the raindrop pump includes a shell 2, the inside of the shell 2 is provided with a circular inner cavity 203, the inner wall of the inner cavity 203 is rotatably connected with a rotating shaft 9, the outer wall of the rotating shaft 9 is fixedly connected with a cylinder 10, the outer wall of the cylinder 10 is fixedly connected with a plurality of uniformly distributed extrusion plates 1001, the extrusion plates 1001 are in the shape of arc strips, the inner wall of the inner cavity 203 is fixedly connected with a rubber tube 11, and both ends of the rubber tube 11 extend to the outside of the shell 2, the extrusion plate 1001 is tightly attached to the rubber tube 11, the right end of the rubber tube 11 is the input end of the raindrop pump and is fixedly connected with the liquid inlet pipe 12, the left end of the rubber tube 11 is the output end, and is fixedly connected with the liquid outlet pipe 201, the outside of the shell 2 The wall is fixedly connected with a motor 202, and the output end of the motor 202 is fixedly connected to one end of the rotating shaft 9. Since the adhesive is a viscous material, when it drips downward through the drip hole 601, it will form a long strip without breaking, thereby reducing the contact area between the adhesive and the ceramic powder. By setting the raindrop pump, the motor 202 can drive the extrusion plate 1001 to rotate through the rotating shaft 9. Since there are gaps between the multiple extrusion plates 1001, the adhesive can be intermittently discharged to the inside of the hollow plate 6 during rotation, and the adhesive intermittently drips downward through the drip hole 601. The dripping adhesive increases the contact area with the ceramic powder, so that the adhesive and ceramic powder are mixed more fully.

[0049] See also Figure 2 The outer wall of the stirring rod 4 is fixedly connected with a plurality of evenly distributed dust raising plates 8, and the side wall of the dust raising plate 8 is provided with a plurality of resistance reducing holes 801. Through the above arrangement, when the stirring rod 4 rotates to raise the ceramic powder in the mixing kettle 1, the dust raising plate 8 can generate greater wind force and can better raise the powder.

[0050] Please refer to 1 and 4. The side wall of the mixing kettle 1 is provided with two symmetrically arranged residual powder recovery devices, which include an air duct 13, which is fixedly connected to the side wall of the mixing kettle 1, and a filter screen 1301 is fixedly connected to the inner wall of the air duct 13. A positive and negative exhaust fan 3 is provided on one side of the mixing kettle 1, and one end of the positive and negative exhaust fan 3 is fixedly connected to an upper inlet and outlet pipe 301, and the other end of the positive and negative exhaust fan 3 is fixedly connected to a lower inlet and outlet pipe 302. One end of the upper inlet and outlet pipe 301 is fixedly connected to the air duct 13 on the left, and one end of the lower inlet and outlet pipe 302 is fixedly connected to the air duct 13 on the right. After the adhesive is added, some ceramic powder may still float inside the mixing kettle 1. Through the above arrangement, when the adhesive is added, the positive and negative exhaust fan 3 can be started for positive suction, and the air in the mixing kettle 1 The flow direction is from right to left, and the ceramic powder in the mixing kettle 1 is sucked into the interior of the left air duct 13 and intercepted by the upper inlet and outlet pipe 301, and then back-sucked by the forward and reverse exhaust fan 3. At this time, the air flow direction is from left to right, and the ceramic powder intercepted by the upper inlet and outlet pipe 301 is blown back to the interior of the mixing kettle 1 and intercepted by the upper inlet and outlet pipe 301 on the right. The above operation is repeated to drive the powder to move left and right to contact the adhesive. Through the above arrangement, the residual adhesive can be blown onto the surface of the adhesive for mixing. The air duct 13 is arranged to be inclined, and one end of the air duct 13 close to the mixing kettle 1 is lower than the other end of the air duct 13. Through the above arrangement, when the ceramic powder is blown from the air duct 13 to the interior of the mixing kettle 1, the ceramic powder can be blown on the surface of the adhesive, which can better make the ceramic powder contact with the adhesive.

[0051] The above is only a preferred specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes within the technical scope disclosed in the present application according to the technical solution and its improved conception, which should be covered by the protection scope of the present application.

Claims

1. A method for mixing ultra-high temperature insulation slurry, characterized in that: The following steps are involved: S1, placing nano-grade ceramic powders such as zirconium oxide, aluminum oxide, magnesium oxide, and titanium oxide into a mixing kettle (1); S2, the stirring rod (4) rotates to lift the ceramic powder inside the mixing kettle (1), so that the ceramic powder floats inside the mixing kettle (1), and then the stirring rod (4) stops rotating; S3, start the raindrop pump to pump the adhesive into the top of the mixing kettle (1) in sections and let it fall in the shape of raindrops; S4, the falling adhesive is fully integrated with the ceramic powder floating in the mixing kettle (1), and after the adhesive is discharged, the stirring rod (4) is rotated to stir, and after the mixing is completed, the finished product is discharged; The top of the mixing kettle (1) is fixedly connected to a driving machine (401), a feeding pipe (5) and a powder pipe (7); the stirring rod (4) is located on the inner side of the mixing kettle (1); the output end of the driving machine (401) is fixedly connected to the top of the stirring rod (4); the inner wall of the top of the mixing kettle (1) is fixedly connected to a hollow plate (6); the bottom end of the feeding pipe (5) is fixedly connected to the hollow plate (6); a through hole is provided in the hollow plate (6) near the powder pipe (7) and the stirring rod (4); the bottom ends of the powder pipe (7) and the stirring rod (4) pass through the corresponding through holes; a plurality of evenly distributed drip holes (601) are provided on the bottom surface of the hollow plate (6); the output end of the raindrop pump is fixedly connected to a liquid outlet pipe (201); the top end of the liquid outlet pipe (201) is fixedly connected to the feeding pipe (5); and the input end of the raindrop pump is fixedly connected to a liquid inlet pipe (12).

2. The method for mixing ultra-high temperature insulation slurry according to claim 1, characterized in that: The raindrop pump comprises a shell (2), a circular inner cavity (203) is provided inside the shell (2), the inner wall of the inner cavity (203) is rotatably connected to a rotating shaft (9), and the outer wall of the rotating shaft (9) is fixedly connected to a cylinder (10).

3. The method for mixing ultra-high temperature insulation slurry according to claim 2, characterized in that: The outer wall of the cylinder (10) is fixedly connected to a plurality of evenly distributed extrusion plates (1001), and the extrusion plates (1001) are in the shape of arc-shaped long strips. The inner wall of the inner cavity (203) is fixedly connected to a rubber tube (11), and both ends of the rubber tube (11) extend to the outside of the outer shell (2), and the extrusion plates (1001) are in close contact with the rubber tube (11).

4. The method for mixing ultra-high temperature insulation slurry according to claim 3, characterized in that: A motor (202) is fixedly connected to the outer wall of the housing (2), and an output end of the motor (202) is fixedly connected to one end of a rotating shaft (9).

5. The method for mixing ultra-high temperature insulation slurry according to claim 1, characterized in that: A plurality of evenly distributed dust-raising plates (8) are fixedly connected to the outer wall of the stirring rod (4), and a plurality of resistance-reducing holes (801) are provided on the side walls of the dust-raising plates (8).

6. The method for mixing ultra-high temperature insulation slurry according to claim 1, characterized in that: The side wall of the mixing kettle (1) is provided with two symmetrically arranged residual powder recovery devices, and the residual powder recovery devices include air ducts (13).

7. The method for mixing ultra-high temperature insulation slurry according to claim 6, characterized in that: The air duct (13) is fixedly connected to the side wall of the mixing kettle (1), and a filter screen (1301) is fixedly connected to the inner wall of the air duct (13).

8. The method for mixing ultra-high temperature insulation slurry according to claim 7, characterized in that: A forward and reverse exhaust fan (3) is provided on one side of the mixing kettle (1); one end of the forward and reverse exhaust fan (3) is fixedly connected to an upper inlet and outlet pipe (301); and the other end of the forward and reverse exhaust fan (3) is fixedly connected to a lower inlet and outlet pipe (302).

9. The method for mixing ultra-high temperature insulation slurry according to claim 8, characterized in that: One end of the upper inlet and outlet pipe (301) is fixedly connected to the air duct (13) on the left side, and one end of the lower inlet and outlet pipe (302) is fixedly connected to the air duct (13) on the right side.

10. The method for mixing ultra-high temperature insulation slurry according to claim 6, characterized in that: The air duct (13) is arranged in an inclined shape, and one end of the air duct (13) close to the mixing kettle (1) is lower than the other end of the air duct (13).

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