Foaming equipment and method for preparing geopolymer based on fly ash

Abstract

The invention discloses foaming equipment and method for preparing a geopolymer based on fly ash, and relates to the technical field of stirring foaming. The foaming bin is fixed to the support, a slurry inlet and a foaming agent inlet are formed in the upper end of the foaming bin, and a discharging port is formed in the lower end face of the foaming bin; the fixed disc is fixed in the foaming bin; the stirring motor is fixed on the upper end surface of the foaming bin; the driving assembly is rotationally arranged in the fixed disc and is connected with an output shaft of the stirring motor; the main stirring assembly is fixed at the axis position of the driving assembly; the number of the auxiliary stirring assemblies is two, and the auxiliary stirring assemblies are symmetrically fixed to the driving assembly; slurry and a foaming agent can be stirred and mixed through the main stirring assembly, and the pore uniformity of the slurry can be improved through the auxiliary stirring assembly.

Description

Technical Field

[0001] The invention relates to the technical field of stirring foaming, in particular to a foaming device and a method for preparing a geopolymer based on fly ash. Background Art

[0002] Fly ash geopolymer preparation is a method of using fly ash as the main raw material to generate geopolymer through alkali-induced reaction. Geopolymer has the characteristics of low carbon and high performance, and is an ideal material to replace traditional cement. When making it, it is necessary to first make a slurry, and then put the slurry into a stirring and foaming equipment for stirring and foaming to obtain the desired pore structure.

[0003] Most existing stirring and foaming equipment use anchor-shaped stirring blades during stirring. Their structure is simple and cannot allow a small amount of air to enter the stirring bottom for mixing, resulting in uneven pores in the slurry. In addition, the vortex formed by the anchor-shaped stirring blades is used for stirring and mixing, and the shearing effect on the slurry is poor, resulting in poor stirring and mixing effect of the slurry and the foaming agent.

[0004] In view of the above problems, the present invention provides a foaming device and method for preparing geopolymer based on fly ash to solve the above problems. Summary of the invention

[0005] To achieve the above object, the present invention provides the following technical solution: a foaming device for preparing geopolymer based on fly ash, comprising:

[0006] A bracket, fixed on the ground;

[0007] A foaming bin is fixed on the bracket, and a slurry inlet and a foaming agent inlet are provided at the upper end of the foaming bin, and a discharge port is provided at the lower end surface of the foaming bin;

[0008] A fixed plate, fixed inside the foaming chamber;

[0009] A stirring motor is fixed on the upper end surface of the foaming chamber;

[0010] A driving assembly is rotatably disposed in the fixed disk and connected to an output shaft of the stirring motor;

[0011] A main stirring assembly is fixed at the axis center of the driving assembly;

[0012] The auxiliary stirring assembly is configured as two and symmetrically fixed on the driving assembly.

[0013] Further, the driving assembly comprises:

[0014] A rotating ring, rotatably disposed in the fixed disk;

[0015] An internal gear, fixed inside the rotating ring;

[0016] The driven gears are configured as three, arranged circumferentially on the fixed plate, and all mesh with the internal gear;

[0017] The driving gear is rotatably arranged on the fixed disk, meshes with the three driven gears, and is connected with the output shaft of the stirring motor.

[0018] Further, the main stirring assembly comprises:

[0019] A main stirring shaft, fixed on the driving gear;

[0020] A stirring blade is slidably arranged on the main stirring shaft and is limited by bolts and the main stirring shaft;

[0021] An anchor-shaped stirring blade is fixed on the lower end of the main stirring shaft.

[0022] Further, the auxiliary stirring component comprises:

[0023] An auxiliary stirring shaft is fixed on the rotating ring;

[0024] A reset assembly, fixed on the lower end surface of the auxiliary stirring shaft;

[0025] The adjusting component is fixed on the lower end surface of the resetting component.

[0026] Further, the reset component comprises:

[0027] A damping column, fixed on the lower end surface of the auxiliary stirring shaft;

[0028] A connecting column is slidably arranged on the damping column, and a side wall of the connecting column is provided with at least two air outlets;

[0029] A hydraulic rod, slidably disposed in the damping column, and one end of which is fixedly connected to the connecting column;

[0030] A return spring is sleeved on the outer wall of the damping column.

[0031] Further, the adjustment component comprises:

[0032] An adjusting column is fixed to the lower end surface of the reset assembly and has an adjusting chamber inside;

[0033] A lifting column, fixed in the adjustment chamber;

[0034] An adjustment plate fixed to the output end of the lifting column;

[0035] A reinforcement ring fixed to the outer wall of the adjusting column;

[0036] A rotating shaft, rotatably arranged on the side walls of the reinforcement ring and the adjustment column, extending into the adjustment chamber and fixed with a rotating plate;

[0037] An adjusting blade is fixed to an end of the rotating shaft away from the rotating plate;

[0038] A limit block is fixed at the bottom of the regulating bin.

[0039] Furthermore, the adjustment plate is hinged to one end of the rotating plate, and the limit block is located below the hinge position of the adjustment plate and the rotating plate. When the rotating plate is limited by the limit block, the adjustment leaf is in a horizontal state.

[0040] A foaming method of a foaming device for preparing geopolymer based on fly ash, comprising the following steps:

[0041] S1. Slurry preparation; mixing fly ash, alkali activator and additives to form a slurry;

[0042] S2 stirring foaming; adding the mixed slurry into the foaming chamber, adding a foaming agent into the foaming chamber, and then stirring and foaming through the main stirring assembly;

[0043] S3 auxiliary stirring; a small amount of air is pressed down to the bottom of the slurry by the auxiliary stirring component, and auxiliary stirring is performed by the rise of the auxiliary stirring component;

[0044] S4. Moulding: injecting the foamed slurry into the mould to form the desired shape and size.

[0045] Compared with the prior art, the present invention provides a foaming device and method for preparing geopolymer based on fly ash, which has the following beneficial effects:

[0046] The present invention can stir and mix the slurry and the foaming agent through the main stirring component, and can improve the pore uniformity of the slurry through the auxiliary stirring component. When stirring, the auxiliary stirring component first moves the regulating blade toward the slurry through the lifting column. At this time, the regulating blade is in a horizontal state, carrying a small amount of air when moving, and a small amount of air is sent into the slurry to increase the foaming effect of the position inside the slurry that is not in contact with the air. Then the regulating blade is raised by the lifting column. At this time, the regulating blade forms an angle with the horizontal plane, and the driving component makes the regulating blade and the main stirring component rotate in opposite directions, thereby improving the shearing effect on the slurry, making the slurry easier to mix with the foaming agent and air, and the working state of the regulating blade is reciprocating motion, thereby providing air to the inside of the slurry in small quantities for multiple times to avoid excessive air causing excessive pores. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 It is a schematic diagram of the overall structure of a foaming device for preparing geopolymer based on fly ash;

[0048] Figure 2 It is a schematic diagram of the internal structure of a foaming chamber in a foaming device for preparing geopolymer based on fly ash;

[0049] Figure 3 It is a structural schematic diagram of a main stirring component in a foaming device for preparing geopolymer based on fly ash;

[0050] Figure 4 It is a structural schematic diagram of an auxiliary stirring component in a foaming device for preparing geopolymer based on fly ash;

[0051] In the figure: 1. bracket; 2. foaming chamber; 21. fixed plate; 22. discharge port; 3. slurry inlet; 4. foaming agent inlet; 5. stirring motor; 7. main stirring assembly; 8. auxiliary stirring assembly; 61. rotating ring; 62. internal gear; 63. driven gear; 64. driving gear; 71. main stirring shaft; 72. stirring blade; 73. anchor stirring blade; 81. auxiliary stirring shaft; 82. reset assembly; 83. adjustment assembly; 821. connecting column; 822. air outlet; 823. damping column; 824. hydraulic rod; 825. reset spring; 831. adjustment column; 832. adjustment chamber; 833. lifting column; 834. adjustment plate; 835. reinforcement ring; 836. rotating shaft; 837. adjustment blade; 838. rotating plate; 839. limit block. DETAILED DESCRIPTION

[0052] Reference Figure 1-Figure 4 The present invention provides a technical solution: a foaming device for preparing geopolymer based on fly ash, comprising:

[0053] Bracket 1, fixed on the ground;

[0054] A foaming chamber 2 is fixed on the bracket 1, and a slurry inlet 3 and a foaming agent inlet 4 are provided at the upper end of the foaming chamber 2, and a discharge port 22 is provided at the lower end surface of the foaming chamber 2;

[0055] A fixed plate 21, fixed inside the foaming chamber 2;

[0056] A stirring motor 5 is fixed on the upper end surface of the foaming chamber 2;

[0057] A driving assembly, rotatably disposed in the fixed disk 21 and connected to the output shaft of the stirring motor 5;

[0058] A main stirring assembly 7, fixed at the axis center position of the driving assembly;

[0059] The auxiliary stirring assembly 8 is configured as two and symmetrically fixed on the driving assembly.

[0060] In this embodiment, the driving component includes:

[0061] A rotating ring 61, rotatably disposed in the fixed disk 21;

[0062] An internal gear 62, fixed inside the rotating ring 61;

[0063] The driven gears 63 are configured as three and are arranged circumferentially on the fixed plate 21 and all mesh with the internal gear 62;

[0064] The driving gear 64 is rotatably disposed on the fixed disk 21 , meshes with the three driven gears 63 , and is connected to the output shaft of the stirring motor 5 .

[0065] When the driving assembly is running, the stirring motor 5 drives the driving gear 64 to rotate, and then the driving gear 64 drives the driven gear 63 to rotate, and the driven gear 63 drives the internal gear 62 to rotate, and the driving gear 64 rotates in opposite directions to the internal gear 62.

[0066] It should be noted that the auxiliary stirring assembly 8 and the internal gear 62 rotate in the same direction, and the two auxiliary stirring assemblies 8 revolve around the axis of the main stirring assembly 7 .

[0067] As a preferred embodiment, the main stirring assembly 7 includes:

[0068] A main stirring shaft 71 is fixed on the driving gear 64;

[0069] A stirring blade 72 is slidably disposed on the main stirring shaft 71 and is limited by bolts and the main stirring shaft 71;

[0070] The anchor-shaped stirring blade 73 is fixed to the lower end of the main stirring shaft 71 .

[0071] That is to say, the stirring blade 72 can provide assistance to the anchor-shaped stirring blade 73, so that the slurry can more easily form a vortex, thereby improving the mixing effect, and the height of the stirring blade 72 is flush with the upper surface of the slurry.

[0072] As a preferred embodiment, the auxiliary stirring component 8 includes:

[0073] Auxiliary stirring shaft 81, fixed on the rotating ring 61;

[0074] A reset assembly 82, fixed on the lower end surface of the auxiliary stirring shaft 81;

[0075] The adjusting assembly 83 is fixed on the lower end surface of the resetting assembly 82 .

[0076] As a preferred embodiment, the reset component 82 includes:

[0077] A damping column 823 is fixed on the lower end surface of the auxiliary stirring shaft 81;

[0078] A connecting column 821 is slidably disposed on the damping column 823, and a side wall thereof is provided with at least two air outlets 822;

[0079] A hydraulic rod 824 is slidably disposed in the damping column 823, and one end of the hydraulic rod 824 is fixedly connected to the connecting column 821;

[0080] The return spring 825 is sleeved on the outer wall of the damping column 823 .

[0081] That is to say, the return speed of the return spring 825 can be reduced by the hydraulic rod 824 and the damping column 823 .

[0082] As a preferred embodiment, the adjustment component 83 includes:

[0083] The adjusting column 831 is fixed on the lower end surface of the reset assembly 82, and an adjusting chamber 832 is provided inside the adjusting column 831;

[0084] A lifting column 833 is fixed in the adjustment chamber 832;

[0085] An adjustment plate 834, fixed at the output end of the lifting column 833;

[0086] A reinforcement ring 835, fixed to the outer wall of the adjustment column 831;

[0087] A rotating shaft 836 is rotatably disposed on the side walls of the reinforcement ring 835 and the adjustment column 831, and extends into the adjustment chamber 832, and is fixed with a rotating plate 838;

[0088] An adjusting leaf 837 is fixed to one end of the rotating shaft 836 away from the rotating plate 838;

[0089] The limiting block 839 is fixed at the bottom of the regulating chamber 832 .

[0090] Among them, when the auxiliary stirring component 8 is running, the regulating blade 837 is first controlled by the lifting column 833 to move toward the slurry. At this time, the regulating blade 837 is in a horizontal state, carrying a small amount of air when moving, and sending a small amount of air into the slurry to increase the foaming effect of the position inside the slurry that is not in contact with the air. Then the regulating blade 837 rises through the lifting column 833. At this time, the regulating blade 837 forms an angle with the horizontal plane, and the driving component makes the regulating blade 837 and the main stirring component 7 rotate in opposite directions, thereby improving the shear effect on the slurry, making it easier to mix the slurry with the foaming agent and the air, and the working state of the regulating blade 837 is reciprocating motion.

[0091] As a preferred embodiment, the adjustment plate 834 is hinged to one end of the rotating plate 838, and the limit block 839 is located below the hinge position of the adjustment plate 834 and the rotating plate 838. When the rotating plate 838 is limited by the limit block 839, the adjustment leaf 837 is in a horizontal state.

[0092] It should be noted that the initial state of the adjusting leaf 837 is an inclined state. When the lifting column 833 moves downward, the rotating plate 838 is pushed to rotate by the adjusting plate 834, so that the rotating plate 838 contacts and limits the position with the limit block 839. At this time, the adjusting leaf 837 is in a horizontal state. Then the lifting column 833 continues to move downward, pushing the adjusting column 831 and the connecting column 821 to slide downward, so that the adjusting plate 834 moves toward the slurry. When the lifting column 833 moves upward, its initial movement speed is greater than the reset speed of the reset spring 825, so that the adjusting leaf 837 is in the initial state. At this time, the end of the rotating plate 838 away from the adjusting leaf 837 contacts and limits the position with the bottom of the adjusting bin 832. Then the rising speed of the lifting column 833 is consistent with the reset speed of the reset spring 825, so that the adjusting leaf 837 remains in an inclined state, which is convenient for forming a shear force on the slurry.

[0093] A foaming method of a foaming device for preparing geopolymer based on fly ash, comprising the following steps:

[0094] S1. Slurry preparation; mixing fly ash, alkali activator and additives to form a slurry;

[0095] S2. Stirring and foaming; adding the mixed slurry to the foaming chamber 2, and adding a foaming agent to the foaming chamber 2, and then stirring and foaming by the main stirring assembly 7; wherein the slurry is added through the slurry inlet 3, and the foaming agent is added through the foaming agent inlet 4;

[0096] S3 auxiliary stirring; a small amount of air is pressed down to the bottom of the slurry by the auxiliary stirring assembly 8, and auxiliary stirring is performed by the rise of the auxiliary stirring assembly 8;

[0097] During auxiliary stirring, the regulating blade 837 is first moved toward the slurry by the lifting column 833. At this time, the regulating blade 837 is in a horizontal state, carrying a small amount of air during the movement, and sending a small amount of air into the slurry to increase the foaming effect of the position inside the slurry that is not in contact with the air. Then, the regulating blade 837 is raised by the lifting column 833. At this time, the regulating blade 837 forms an angle with the horizontal plane, and the driving component makes the regulating blade 837 and the main stirring component 7 rotate in opposite directions, thereby improving the shearing effect on the slurry, making it easier to mix the slurry with the foaming agent and the air, and the working state of the regulating blade 837 is reciprocating motion;

[0098] S4. Moulding: injecting the foamed slurry into the mould to form the desired shape and size.

[0099] What has been described above are only preferred specific implementations of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, can make equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A foaming device for preparing geopolymer based on fly ash, characterized in that: include: A bracket (1) fixed on the ground; A foaming bin (2) is fixed on the support (1), and a slurry inlet (3) and a foaming agent inlet (4) are provided at the upper end of the foaming bin (2), and a discharge port (22) is provided at the lower end surface of the foaming bin (2); A fixed plate (21), fixed inside the foaming chamber (2); A stirring motor (5) fixed on the upper end surface of the foaming chamber (2); A driving assembly, rotatably disposed in the fixed disk (21) and connected to an output shaft of the stirring motor (5); A main stirring assembly (7) is fixed at the axis center of the driving assembly; The auxiliary stirring assembly (8) is configured as two and is symmetrically fixed on the driving assembly.

2. A foaming device for preparing geopolymer based on fly ash according to claim 1, characterized in that: The drive assembly comprises: A rotating ring (61) rotatably disposed within the fixed disk (21); An internal gear (62) fixed inside the rotating ring (61); The driven gears (63) are configured as three and are arranged circumferentially on the fixed disk (21) and all mesh with the internal gear (62); The driving gear (64) is rotatably disposed on the fixed disk (21), meshes with the three driven gears (63), and is connected to the output shaft of the stirring motor (5).

3. A foaming device for preparing geopolymer based on fly ash according to claim 2, characterized in that: The main stirring assembly (7) comprises: A main stirring shaft (71) fixed on the driving gear (64); A stirring blade (72) is slidably disposed on the main stirring shaft (71) and is limited in position by bolts and the main stirring shaft (71); An anchor-shaped stirring blade (73) is fixed to the lower end of the main stirring shaft (71).

4. A foaming device for preparing geopolymer based on fly ash according to claim 2, characterized in that: The auxiliary stirring component (8) comprises: An auxiliary stirring shaft (81) is fixed on the rotating ring (61); A reset assembly (82) fixed to the lower end surface of the auxiliary stirring shaft (81); The adjustment component (83) is fixed on the lower end surface of the reset component (82).

5. A foaming device for preparing geopolymer based on fly ash according to claim 4, characterized in that: The reset component (82) comprises: A damping column (823) fixed to the lower end surface of the auxiliary stirring shaft (81); A connecting column (821) is slidably disposed on the damping column (823), and a side wall thereof is provided with at least two air outlets (822); A hydraulic rod (824) is slidably disposed in the damping column (823), and one end of the hydraulic rod is fixedly connected to the connecting column (821); The return spring (825) is sleeved on the outer wall of the damping column (823).

6. A foaming device for preparing geopolymer based on fly ash according to claim 4, characterized in that: The regulating component (83) comprises: An adjustment column (831) is fixed to the lower end surface of the reset assembly (82), and an adjustment chamber (832) is provided inside the adjustment column; A lifting column (833) is fixed in the adjustment chamber (832); An adjustment plate (834) fixed to the output end of the lifting column (833); A reinforcement ring (835) fixed to the outer wall of the adjustment column (831); A rotating shaft (836) rotatably disposed on the side walls of the reinforcement ring (835) and the adjustment column (831), and extending into the adjustment chamber (832) and having a rotating plate (838) fixed thereto; An adjusting leaf (837) is fixed to one end of the rotating shaft (836) away from the rotating plate (838); The limiting block (839) is fixed at the bottom of the regulating chamber (832).

7. A foaming device for preparing geopolymer based on fly ash according to claim 6, characterized in that: The adjustment plate (834) is hinged to one end of the rotating plate (838), and the limit block (839) is located below the hinged position of the adjustment plate (834) and the rotating plate (838); when the rotating plate (838) is limited by the limit block (839), the adjustment leaf (837) is in a horizontal state.

8. A foaming method of a foaming device for preparing geopolymer based on fly ash, which adopts the foaming device for preparing geopolymer based on fly ash as claimed in claim 7, characterized in that: The steps include: S1. Slurry preparation; mixing fly ash, alkali activator and additives to form a slurry; S2. stirring and foaming; adding the mixed slurry into the foaming chamber (2), adding a foaming agent into the foaming chamber (2), and then stirring and foaming through the main stirring assembly (7); S3. Auxiliary stirring; a small amount of air is pressed down to the bottom of the slurry by the auxiliary stirring component (8), and auxiliary stirring is performed by the rise of the auxiliary stirring component (8); S4. Moulding: injecting the foamed slurry into the mould to form the desired shape and size.

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