CN112692990A - Preparation method of heat-preservation foaming cement - Google Patents
Preparation method of heat-preservation foaming cement Download PDFInfo
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- CN112692990A CN112692990A CN202011601239.6A CN202011601239A CN112692990A CN 112692990 A CN112692990 A CN 112692990A CN 202011601239 A CN202011601239 A CN 202011601239A CN 112692990 A CN112692990 A CN 112692990A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
- B28C5/003—Methods for mixing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/50—Producing shaped prefabricated articles from the material specially adapted for producing articles of expanded material, e.g. cellular concrete
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
- B28B13/02—Feeding the unshaped material to moulds or apparatus for producing shaped articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B17/00—Details of, or accessories for, apparatus for shaping the material; Auxiliary measures taken in connection with such shaping
- B28B17/02—Conditioning the material prior to shaping
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
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- Ceramic Engineering (AREA)
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Abstract
The invention belongs to the technical field of cement preparation, and particularly relates to a preparation method of heat-preservation foaming cement, which comprises the following steps: step one, raw material pretreatment: and grinding the cement and the fly ash, and uniformly stirring to obtain a mixture. Calcining the mixture; step two, adding water for mixing and stirring: mixing the mixture calcined in the step one with water, uniformly stirring, adding fibers, calcium stearate and a curing agent, and continuously uniformly stirring to obtain a stirred material; step three, forming after foaming: adding a foaming agent into the stirred material, uniformly stirring, pouring into a mould, and solidifying; and B, in the step I, the mixture is calcined by adopting a heat-preservation foaming cement preparation device. According to the preparation method of the heat-preservation foaming cement, when the cement and the fly ash powder are calcined, the agglomeration of the cement and the fly ash powder is avoided, and the calcining effect is improved.
Description
Technical Field
The invention belongs to the technical field of cement preparation, and particularly relates to a preparation method of heat-preservation foaming cement.
Background
The heat-insulating foamed cement is a novel light heat-insulating material containing a large number of closed air holes, which is formed by fully foaming a foaming agent in a mechanical mode through a foaming system of a foaming machine, uniformly mixing foam and cement slurry, then carrying out cast-in-place construction or mold forming through a pumping system of the foaming machine and carrying out natural maintenance. The heat-insulating foamed cement is a bubble-like heat-insulating material, and is characterized by that the interior of concrete is formed into closed foam pores to make the concrete light and heat-insulating. The existing heat-preservation foaming cement has the following problems in the preparation process: when the heat-preservation foamed cement is prepared, the cement and the fly ash need to be ground and then calcined, water vapor generated during calcination of cement and fly ash powder cannot be discharged in the calcination process of the existing calcination equipment, the water vapor can be condensed into small water drops after contacting with a temperature-reduced part in the calcination equipment, the small water drops can drop onto the cement and fly ash powder below under the action of gravity, and the cement and fly ash powder can form agglomeration after contacting with water, so that the calcination effect is adversely affected. Since the water vapor generated by the cement and fly ash powder is inevitably absorbed by the cement and fly ash powder in a small part during the rising process, the cement and fly ash powder can form a small amount of agglomeration.
Disclosure of Invention
Technical problem to be solved
The invention provides a preparation method of heat-preservation foaming cement, aiming at solving the following problems in the preparation process of the existing heat-preservation foaming cement: when the heat-preservation foamed cement is prepared, the cement and the fly ash need to be ground and then calcined, water vapor generated during calcination of cement and fly ash powder cannot be discharged in the calcination process of the existing calcination equipment, the water vapor can be condensed into small water drops after contacting with a temperature-reduced part in the calcination equipment, the small water drops can drop onto the cement and fly ash powder below under the action of gravity, and the cement and fly ash powder can form agglomeration after contacting with water, so that the calcination effect is adversely affected. Since the water vapor generated by the cement and fly ash powder is inevitably absorbed by the cement and fly ash powder in a small part during the rising process, the cement and fly ash powder can form a small amount of agglomeration.
(II) technical scheme
In order to solve the technical problems, the invention adopts the following technical scheme:
a preparation method of heat-preservation foaming cement comprises the following steps:
step one, raw material pretreatment: and grinding the cement and the fly ash, and uniformly stirring to obtain a mixture. And calcining the mixture.
Step two, adding water for mixing and stirring: and (3) mixing the mixture calcined in the step one with water, uniformly stirring, adding the fiber, the calcium stearate and the curing agent, and continuously uniformly stirring to obtain a stirred material.
Step three, forming after foaming: and adding the foaming agent into the stirred material, uniformly stirring, pouring into a mould, and solidifying.
The method comprises the following steps of calcining a mixture, wherein a heat-preservation foaming cement preparation device is matched with the calcining process of the mixture in the step one, the heat-preservation foaming cement preparation device comprises a horizontal annular bottom plate, and a plurality of supporting legs are uniformly and fixedly arranged on the lower surface of the annular bottom plate along the circumferential direction of the annular bottom plate. The annular bottom plate upper surface is seted up the ring channel rather than the axis coincidence, and the ring channel upper surface is installed a plurality of through the ring channel rotation and is followed the support column that the ring channel was evenly arranged. And the top of the supporting column is fixedly provided with an installation cylinder which is superposed with the axis of the annular groove. The installation section of thick bamboo is cylindrical and the vertical square groove of having seted up that runs through in the installation section of thick bamboo. And an outer gear ring which is coincident with the axis of the annular groove is fixedly arranged on the outer side of the supporting column. The upper surface of the annular bottom plate is rotatably provided with a gear which is meshed with the outer gear ring. The lower surface of the annular bottom plate is fixedly provided with a driving motor through a motor base, and an output shaft of the driving motor is fixedly connected with the gear. The square inslot wall bottom detachably installs and connects the flitch, connects the flitch bottom surface to install the handle. The gear is driven to rotate through the driving motor, the gear drives the outer gear ring to rotate, the outer gear ring synchronously drives the supporting column to slide along the annular groove, and the supporting column drives the installation cylinder to rotate. The mixture of the ground cement and the pulverized fuel ash is conveyed into the square groove through the existing material conveying equipment such as a pipeline. The mixture falls to the upper surface of the material receiving plate after being calcined in the square groove, and the material receiving plate is taken down from the square groove after the driving motor is stopped.
Two opposite side walls of the square groove are fixedly provided with downward-inclined guide plates in a staggered mode, and the bottom end of the upper layer of guide plate corresponds to the top end of the lower layer of guide plate. A first air outlet groove is formed in the guide plate, and a plurality of second air outlet grooves communicated with the first air outlet groove are uniformly formed in the lower surface of the guide plate. And a third air outlet groove communicated with the first air outlet groove is formed in the side wall of the square groove at the position corresponding to the first air outlet groove. The third air outlet groove is horizontally arranged along the radial direction of the mounting cylinder. And a fourth air outlet groove which is superposed with the axis of the third air outlet groove is formed in the outer wall of the mounting cylinder at the position corresponding to the third air outlet groove. And the end surface of the fourth air outlet groove is rotatably provided with an impeller through a connecting rod. And the impeller is fixedly provided with a mounting shaft which is superposed with the axis of the fourth air outlet groove. The end of the mounting shaft is fixedly provided with a bevel gear. A plurality of vertical mounting rods are uniformly and fixedly mounted on the upper surface of the annular bottom plate around the mounting cylinder, and bevel gear rings meshed with the bevel gears are fixedly mounted on the mounting rods corresponding to the positions of the bevel gears. A plurality of annular heating rods which are coincided with the axes of the installation cylinders are installed in the installation cylinders from top to bottom. The inner side wall of the square groove is covered with a heat-insulating layer. The mixture entering the square groove falls to the upper surface of the guide plate on the uppermost layer, slides downwards to the upper surface of the guide plate on the lower layer along the upper surface of the guide plate, and falls to the upper surface of the receiving plate after being separated from the upper surface of the guide plate on the lowermost layer. In this in-process, heat the installation section of thick bamboo through annular heating rod, because square inslot lateral wall coats and is stamped the heat preservation, so the installation section of thick bamboo is heated the back and gives the stock guide with heat transfer, in the stock guide is again with heat transfer to the mixture of stock guide upper surface and the air in the square inslot. Because the heat received by the mixture comes from the material guide plate, the temperature of the steam evaporated by the mixture is always lower than that of the material guide plate, and the steam can not be condensed into small water drops after contacting the material guide plate. In the rotating process of the mounting cylinder, the bevel gear and the bevel gear ring are in a mutual meshing state, so the bevel gear can drive the mounting shaft and the impeller to rotate under the limiting action of the connecting rod. When the impeller rotates, air in the third air outlet groove is sucked into the fourth air outlet groove, so that the air pressure in the third air outlet groove is reduced. The vapor in the square groove enters the third air outlet groove through the second air outlet groove and the first air outlet groove under the action of air pressure and is finally discharged from the fourth air outlet groove. Because the temperature of the steam evaporated by the mixture is always lower than the temperature of the material guide plate, the steam can not be condensed into small water drops in the discharging process.
According to a preferable technical scheme of the invention, the end part of the material guide plate is fixedly provided with the vertical plate, and the bottom end of the vertical plate is positioned below the bottom end of the lower surface of the material guide plate, so that water vapor evaporated from the mixture on the upper surface of the material guide plate can be discharged through entering the material guide plate, and the mixture in the falling process contacted by the water vapor is prevented from being adsorbed by the mixture.
As a preferable technical scheme of the invention, the rolling ball which is in rolling fit with the bottom surface of the annular groove is rotatably arranged at the bottom of the supporting column so as to reduce the friction force between the supporting column and the annular groove and prolong the service life of the supporting column and the annular groove.
As a preferable technical scheme of the invention, an air inlet groove penetrating through the side wall and the heat insulation layer of the installation cylinder is horizontally formed in the position, between two adjacent material guide plates, on the outer side wall of the installation cylinder. And a sealing ring which is coincident with the axis of the air inlet groove is fixedly arranged in the air inlet groove, and a guide rod is horizontally and fixedly arranged on the end surface of the sealing ring, which is close to the square groove. And a sealing plug matched with the sealing ring is arranged on the guide rod in a sliding way. The end part of the guide rod is fixedly provided with a supporting sheet. A return spring sleeved on the guide rod is fixedly connected between the supporting sheet and the sealing plug. Vapor in the square groove gets into the third through second air outlet groove and first air outlet groove and goes out the air groove under atmospheric pressure effect in going out the air groove to finally follow fourth air outlet groove department discharge process, the atmospheric pressure in the square groove reduces, and the outside air in square groove overcomes reset spring's elasticity effect under atmospheric pressure effect and promotes the sealing plug and slide along the guide bar, makes to produce the space between sealing plug and the sealing ring. The air outside the square groove enters the square groove through the gap between the sealing plug and the sealing ring, so that the saturation and temperature of the water vapor in the square groove are reduced, and the water vapor is further prevented from being condensed into small water drops. Meanwhile, the situation that the mixture slides up and down and is accelerated on the material guide plate due to downward airflow generated when the outside air enters the square groove through the top of the square groove is avoided.
As a preferable technical scheme of the invention, the filter screen is fixedly arranged on one side, close to the square groove, of the sealing ring on the inner wall of the air inlet groove, so that moisture in external air is absorbed, and the saturation of water vapor in the square groove is further reduced.
As a preferred technical scheme of the invention, the bevel gear ring is an incomplete bevel gear ring, and a plurality of groups of transmission teeth are uniformly arranged on the bevel gear ring at intervals. The second air outlet groove is strip-shaped, and a strip-shaped holding groove is vertically formed in the position, corresponding to the second air outlet groove, of the upper surface of the guide plate in a penetrating mode. The vertical sliding fit has the expansion plate in the holding tank. The bottom of the expansion plate is fixedly provided with a wind shield sheet positioned in the first air outlet groove. An elastic rope is fixedly connected between the bottom surface of the wind shield and the bottom surface of the first air outlet groove. Because the bevel gear ring is an incomplete bevel gear ring, and a plurality of groups of transmission teeth are uniformly arranged on the bevel gear ring at intervals, the bevel gear, the mounting shaft and the impeller intermittently rotate when the mounting cylinder rotates; the water vapor in the square groove intermittently enters the first air outlet groove. In an initial state, the wind shield sheet is attached to the inner wall of the first air outlet groove; when vapor in the square groove enters the first air outlet groove, the wind-blocking piece is pushed to move upwards under the action of air flow, the wind-blocking piece drives the expansion plate to move upwards in the accommodating groove and extend out of the upper surface of the material guide plate, and meanwhile, the elastic rope is stretched. When the vapor in the square groove stops entering the first air outlet groove, the wind shield sheet and the telescopic plate are pulled back to the original position downwards under the action of the resilience force of the elastic rope. Along with the installation section of thick bamboo lasts the rotation, the expansion plate reciprocates along the holding tank and stretches out the stock guide upper surface periodically to play the effect of stirring to the mixture of stock guide upper surface, make the mixture can with the sufficient contact of stock guide upper surface, avoid the mixture to reunite.
(III) advantageous effects
The invention has at least the following beneficial effects:
(1) according to the preparation method of the heat-preservation foaming cement, when the cement and the fly ash powder are calcined, the vapor generated in the calcination process of the cement and the fly ash powder is discharged out of the square groove through the air pressure effect, the vapor is only contacted with the upper layer material guide plate in the discharge process, and the temperature of the material guide plate is always higher than that of the vapor, so that the vapor is not condensed into small water drops before being discharged out of the square groove, the agglomeration of the cement and the fly ash powder is avoided, and the calcination effect is improved.
(2) In the process of discharging the water vapor generated in the process of calcining the cement and fly ash powder out of the square groove, the dry and cold air with reduced humidity is sucked from the outside of the square groove through the air pressure, so that the temperature and the saturation of the water vapor are reduced, the water vapor is further prevented from being condensed into small water drops in the process of discharging the water vapor out of the square groove, and the calcining effect is further improved.
(3) As the water vapor generated by the cement and the fly ash powder is inevitably absorbed by the cement and the fly ash powder in the rising process, when the cement and the fly ash powder are calcined, the cement and the fly ash powder sliding on the upper surface of the guide plate are stirred through the up-and-down movement of the expansion plate, so that the agglomeration of the cement and the fly ash powder is avoided, and the calcining effect is further improved.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a diagram illustrating the steps of a method for preparing heat-insulating foamed cement according to an embodiment of the present invention;
FIG. 2 is a schematic perspective view of an apparatus for producing heat-insulating foamed cement according to an embodiment of the present invention;
FIG. 3 is a schematic view of the internal structure of the heat-insulating foamed cement preparation device in the embodiment of the present invention;
FIG. 4 is an enlarged schematic view at A in FIG. 3;
FIG. 5 is an enlarged schematic view at B in FIG. 3;
FIG. 6 is an enlarged schematic view at C of FIG. 3;
FIG. 7 is a top view of a bevel gear ring in an embodiment of the present invention.
In the figure: 1-annular bottom plate, 2-annular groove, 3-support column, 4-mounting cylinder, 5-square groove, 6-outer gear ring, 7-gear, 8-driving motor, 9-material receiving plate, 10-material guide plate, 11-first air outlet groove, 12-second air outlet groove, 13-third air outlet groove, 14-fourth air outlet groove, 15-connecting rod, 16-impeller, 17-mounting shaft, 18-bevel gear, 19-mounting rod, 20-conical gear ring, 21-annular heating rod, 22-heat insulation layer, 23-vertical plate, 24-rolling ball, 25-air inlet groove, 26-sealing ring, 27-guide rod, 28-sealing plug, 29-support sheet, 30-reset spring, 31-filter screen, and the like, 32-accommodating groove, 33-expansion plate, 34-wind shield sheet and 35-elastic rope.
Detailed Description
The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.
As shown in fig. 1, the embodiment provides a method for preparing heat-insulating foamed cement, which includes the following steps:
step one, raw material pretreatment: and grinding the cement and the fly ash, and uniformly stirring to obtain a mixture. And calcining the mixture.
Step two, adding water for mixing and stirring: and (3) mixing the mixture calcined in the step one with water, uniformly stirring, adding the fiber, the calcium stearate and the curing agent, and continuously uniformly stirring to obtain a stirred material.
Step three, forming after foaming: and adding the foaming agent into the stirred material, uniformly stirring, pouring into a mould, and solidifying.
In the step one, the mixture is calcined by adopting a heat-preservation foaming cement preparation device shown in figures 2 to 7, wherein the heat-preservation foaming cement preparation device comprises a horizontal annular bottom plate 1, and a plurality of support legs are uniformly and fixedly arranged on the lower surface of the annular bottom plate 1 along the circumferential direction of the annular bottom plate. The annular groove 2 coincident with its axis is seted up to 1 upper surface of annular bottom plate, and a plurality of support column 3 along annular groove 2 evenly arranged is installed through annular groove 2 rotation to 1 upper surface of annular bottom plate. The rolling ball 24 which is matched with the bottom surface of the annular groove 2 in a rolling way is rotatably arranged at the bottom of the supporting column 3 so as to reduce the friction force between the supporting column 3 and the annular groove 2 and prolong the service life of the supporting column 3 and the annular groove 2. The top of the supporting column 3 is fixedly provided with an installation cylinder 4 which is coincided with the axis of the annular groove 2. The installation cylinder 4 is cylindrical and a square groove 5 is vertically arranged in the installation cylinder 4 in a penetrating manner. An outer gear ring 6 which is coincident with the axis of the annular groove 2 is fixedly arranged on the outer side of the supporting column 3. The upper surface of the annular bottom plate 1 is rotatably provided with a gear 7 which is meshed with the outer gear ring 6. The lower surface of the annular bottom plate 1 is fixedly provided with a driving motor 8 through a motor base, and an output shaft of the driving motor 8 is fixedly connected with the gear 7. The bottom of the inner wall of the square groove 5 is detachably provided with a material receiving plate 9, and the bottom surface of the material receiving plate 9 is provided with a handle. Drive gear 7 through driving motor 8 and rotate, gear 7 drives outer ring gear 6 and rotates, and outer ring gear 6 drives support column 3 in step and slides along ring channel 2, and support column 3 drives installation section of thick bamboo 4 and rotates. The mixture of the ground cement and fly ash is transported into the square trough 5 by the existing transporting equipment such as a pipeline. The mixture falls to the upper surface of the material receiving plate 9 after being calcined in the square groove 5, and the material receiving plate 9 is taken down from the square groove 5 after the driving motor 8 is stopped.
Two opposite side walls of the square groove 5 are fixedly provided with downward-inclined guide plates 10 in a staggered manner, and the bottom end of the upper guide plate 10 corresponds to the top end of the lower guide plate 10. The end portion of the material guide plate 10 is fixedly provided with a vertical plate 23, and the bottom end of the vertical plate 23 is located below the bottom end of the lower surface of the material guide plate 10, so that water vapor evaporated from the mixture on the upper surface of the material guide plate 10 can be discharged from the material guide plate 10, and the mixture in the falling process is prevented from being adsorbed by the mixture due to the contact of the water vapor. A first air outlet groove 11 is formed in the material guide plate 10, and a plurality of second air outlet grooves 12 communicated with the first air outlet groove 11 are uniformly formed in the lower surface of the material guide plate 10. A third air outlet groove 13 communicated with the first air outlet groove 11 is formed in the side wall of the square groove 5 corresponding to the first air outlet groove 11. The third air outlet groove 13 is horizontally arranged along the radial direction of the mounting cylinder 4. A fourth air outlet groove 14 which is coincident with the axis of the third air outlet groove 13 is formed in the position, corresponding to the third air outlet groove 13, on the outer wall of the mounting cylinder 4. An impeller 16 is rotatably mounted on the end surface of the fourth air outlet groove 14 through a connecting rod 15. The impeller 16 is fixedly provided with a mounting shaft 17 which is superposed with the axis of the fourth air outlet groove 14. A bevel gear 18 is fixedly mounted on the end of the mounting shaft 17. A plurality of vertical mounting rods 19 are uniformly and fixedly mounted on the upper surface of the annular bottom plate 1 around the mounting cylinder 4, and bevel gear rings 20 meshed with the bevel gears 18 are fixedly mounted on the mounting rods 19 corresponding to the positions of the bevel gears 18. A plurality of annular heating rods 21 which are coincided with the axes of the installation cylinders are installed in the installation cylinders 4 from top to bottom. The inner side wall of the square groove 5 is covered with an insulating layer 22. The mixture entering the square chute 5 falls to the upper surface of the guide plate 10 on the uppermost layer, and slides down to the upper surface of the guide plate 10 on the next layer along the upper surface of the guide plate 10 until the mixture is separated from the upper surface of the guide plate 10 on the lowermost layer and falls to the upper surface of the material receiving plate 9. In the process, the installation cylinder 4 is heated by the annular heating rod 21, and the heat preservation layer 22 covers the inner side wall of the square groove 5, so that the installation cylinder 4 is heated and then transfers the heat to the material guide plate 10, and the material guide plate 10 transfers the heat to the mixture on the upper surface of the material guide plate 10 and the air in the square groove 5. Because the heat received by the mixture comes from the material guide plate 10, the temperature of the steam evaporated by the mixture is always lower than that of the material guide plate 10, and the steam can not be condensed into small water drops after contacting the material guide plate 10. In the rotation process of the mounting cylinder 4, because the bevel gear 18 and the bevel gear ring 20 are in a mutual meshing state, the bevel gear 18 can drive the mounting shaft 17 and the impeller 16 to rotate under the limiting action of the connecting rod 15. When the impeller 16 rotates, air in the third air outlet groove 13 is sucked into the fourth air outlet groove 14, so that the air pressure in the third air outlet groove 13 is reduced. The water vapor in the square groove 5 enters the third air outlet groove 13 through the second air outlet groove 12 and the first air outlet groove 11 under the action of air pressure, and is finally discharged from the fourth air outlet groove 14. Because the temperature of the vapor evaporated by the mixture is always lower than that of the material guide plate 10, the vapor can not be condensed into small water drops in the discharging process.
The bevel gear ring 20 is an incomplete bevel gear ring, and a plurality of groups of transmission teeth are uniformly arranged on the bevel gear ring 20 at intervals. The second air outlet chute 12 is strip-shaped, and a strip-shaped receiving slot 32 is vertically formed through the upper surface of the material guide plate 10 corresponding to the position of the second air outlet chute 12. A telescopic plate 33 is vertically slidably fitted in the receiving groove 32. The bottom of the expansion plate 33 is fixedly provided with a wind shield 34 positioned in the first air outlet groove 11. An elastic rope 35 is fixedly connected between the bottom surface of the wind shield 34 and the bottom surface of the first air outlet groove 11. Because the bevel gear ring 20 is an incomplete bevel gear ring and a plurality of groups of transmission teeth are uniformly arranged on the bevel gear ring 20 at intervals, the bevel gear 18, the mounting shaft 17 and the impeller 16 intermittently rotate when the mounting cylinder 4 rotates; the water vapor in the square groove 5 intermittently enters the first air outlet groove 11. In the initial state, the wind shield sheet 34 is attached to the inner wall of the first air outlet groove 11; when the water vapor in the square groove 5 enters the first air outlet groove 11, the air flow pushes the wind-shielding sheet 34 to move upwards, the wind-shielding sheet 34 drives the expansion plate 33 to move upwards in the accommodating groove 32 and extend out of the upper surface of the material guiding plate 10, and the elastic rope 35 is stretched. When the water vapor in the square groove 5 stops entering the first air outlet groove 11, the windshield 34 and the expansion plate 33 are pulled back to the original position by the resilience force of the elastic rope 35. Along with the continuous rotation of installation section of thick bamboo 4, the expansion plate 33 reciprocates along holding tank 32 and stretches out the stock guide 10 upper surface periodically to play the effect of stirring to the mixture of stock guide 10 upper surface, make the mixture can fully contact with the upper surface of stock guide 10, avoid the mixture to agglomerate.
An air inlet groove 25 penetrating through the side wall and the heat insulation layer 22 is horizontally formed on the outer side wall of the mounting cylinder 4 at a position between two adjacent material guide plates 10. A sealing ring 26 which is coincident with the axis of the air inlet groove 25 is fixedly arranged in the air inlet groove, and a guide rod 27 is horizontally and fixedly arranged on the end surface of the sealing ring 26 close to the square groove 5. A sealing plug 28 is slidably fitted on the guide rod 27 and co-operates with the sealing ring 26. The end of the guide rod 27 is fixedly provided with a support plate 29. A return spring 30 sleeved on the guide rod 27 is fixedly connected between the support sheet 29 and the sealing plug 28. Vapor in the square groove 5 enters the third air outlet groove 13 through the second air outlet groove 12 and the first air outlet groove 11 under the action of air pressure, and finally is discharged from the fourth air outlet groove 14, the air pressure in the square groove 5 is reduced, and air outside the square groove 5 overcomes the elastic action of the reset spring 30 under the action of air pressure to push the sealing plug 28 to slide along the guide rod 27, so that a gap is formed between the sealing plug 28 and the sealing ring 26. The air outside the square groove 5 enters the square groove 5 through the gap between the sealing plug 28 and the sealing ring 26, so that the saturation and temperature of the water vapor in the square groove 5 are reduced, and the water vapor is further prevented from being condensed into small water drops. Meanwhile, the situation that the mixture slides up and down on the material guide plate 10 to be accelerated due to downward airflow generated when the outside air enters the square groove 5 through the top of the square groove 5 is avoided. A filter screen 31 is fixedly mounted on one side, close to the square groove 5, of the sealing ring 26 on the inner wall of the air inlet groove 25, so that moisture in the outside air is absorbed, and the saturation of water vapor in the square groove 5 is further reduced.
The working steps of the device for preparing the heat-insulating foaming cement in the embodiment are as follows: drive gear 7 through driving motor 8 and rotate, gear 7 drives outer ring gear 6 and rotates, and outer ring gear 6 drives support column 3 in step and slides along ring channel 2, and support column 3 drives installation section of thick bamboo 4 and rotates. The mixture of the ground cement and fly ash is transported into the square trough 5 by the existing transporting equipment such as a pipeline. The mixture that gets into square groove 5 falls to the superiors stock guide 10 upper surface, heats installation section of thick bamboo 4 through annular heating rod 21, because square groove 5 inside wall coats and is stamped heat preservation 22, so installation section of thick bamboo 4 is heated the back and gives stock guide 10 with the heat transfer, and stock guide 10 is again with in the heat transfer to the mixture of stock guide 10 upper surface and the air in the square groove 5. After the mixture is heated, the water is evaporated into the square groove 5 to form water vapor. In the rotation process of the mounting cylinder 4, the bevel gear 18 can drive the mounting shaft 17 and the impeller 16 to intermittently rotate under the limiting action of the connecting rod 15. When the impeller 16 rotates, air in the third air outlet groove 13 is sucked into the fourth air outlet groove 14, so that the air pressure in the third air outlet groove 13 is reduced. The water vapor in the square groove 5 enters the third air outlet groove 13 through the second air outlet groove 12 and the first air outlet groove 11 under the action of air pressure, and is finally discharged from the fourth air outlet groove 14. The mixture slides down to the upper surface of the next layer of material guiding plate 10 along the upper surface of the material guiding plate 10 until the mixture is separated from the upper surface of the lowest layer of material guiding plate 10 and then falls to the upper surface of the material receiving plate 9. After the driving motor 8 is stopped, the material receiving plate 9 is taken down from the square groove 5.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The preparation method of the heat-preservation foaming cement is characterized by comprising the following steps:
step one, raw material pretreatment: grinding cement and fly ash, and uniformly stirring to obtain a mixture; calcining the mixture;
step two, adding water for mixing and stirring: mixing the mixture calcined in the step one with water, uniformly stirring, adding fibers, calcium stearate and a curing agent, and continuously uniformly stirring to obtain a stirred material;
step three, forming after foaming: adding a foaming agent into the stirred material, uniformly stirring, pouring into a mould, and solidifying;
the method comprises the following steps that firstly, a heat-preservation foaming cement preparation device is adopted to be matched with a mixture calcining process in the step one, the heat-preservation foaming cement preparation device comprises a horizontal annular bottom plate (1), and a plurality of supporting legs are uniformly and fixedly arranged on the lower surface of the annular bottom plate (1) along the circumferential direction of the annular bottom plate; the upper surface of the annular bottom plate (1) is provided with an annular groove (2) which is coincident with the axis of the annular bottom plate, and the upper surface of the annular bottom plate (1) is rotatably provided with a plurality of supporting columns (3) which are uniformly arranged along the annular groove (2) through the annular groove (2); the top of the supporting column (3) is fixedly provided with an installation cylinder (4) which is superposed with the axis of the annular groove (2); the mounting cylinder (4) is cylindrical, and a square groove (5) is vertically arranged in the mounting cylinder (4) in a penetrating manner; an outer gear ring (6) which is coincident with the axis of the annular groove (2) is fixedly arranged on the outer side of the supporting column (3); the upper surface of the annular bottom plate (1) is rotatably provided with a gear (7) which is meshed with the outer gear ring (6); the lower surface of the annular bottom plate (1) is fixedly provided with a driving motor (8) through a motor base, and an output shaft of the driving motor (8) is fixedly connected with a gear (7); a material receiving plate (9) is detachably arranged at the bottom of the inner wall of the square groove (5), and a handle is arranged on the bottom surface of the material receiving plate (9);
downward-inclined material guide plates (10) are fixedly installed on two opposite side walls of the square groove (5) in a staggered mode, and the bottom end of the upper layer of material guide plate (10) corresponds to the top end of the lower layer of material guide plate (10); a first air outlet groove (11) is formed in the material guide plate (10), and a plurality of second air outlet grooves (12) communicated with the first air outlet groove (11) are uniformly formed in the lower surface of the material guide plate (10); a third air outlet groove (13) communicated with the first air outlet groove (11) is formed in the side wall of the square groove (5) at a position corresponding to the first air outlet groove (11); the third air outlet groove (13) is horizontally arranged along the radial direction of the mounting cylinder (4); a fourth air outlet groove (14) which is coincident with the axis of the third air outlet groove (13) is formed in the outer wall of the mounting cylinder (4) at a position corresponding to the third air outlet groove (13); an impeller (16) is rotatably arranged on the end surface of the fourth air outlet groove (14) through a connecting rod (15); a mounting shaft (17) which is overlapped with the axis of the fourth air outlet groove (14) is fixedly mounted on the impeller (16); a bevel gear (18) is fixedly arranged at the end part of the mounting shaft (17); a plurality of vertical mounting rods (19) are uniformly and fixedly mounted on the upper surface of the annular bottom plate (1) around the mounting cylinder (4), and bevel gear rings (20) meshed with the bevel gears (18) are fixedly mounted on the mounting rods (19) at positions corresponding to the bevel gears (18); a plurality of annular heating rods (21) which are overlapped with the axial line of the installation cylinder (4) are installed in the installation cylinder from top to bottom; the inner side wall of the square groove (5) is covered with a heat-insulating layer (22).
2. The preparation method of the heat-preservation foaming cement as claimed in claim 1, which is characterized in that: the end part of the material guide plate (10) is fixedly provided with a vertical plate (23), and the bottom end of the vertical plate (23) is positioned below the bottom end of the lower surface of the material guide plate (10).
3. The preparation method of the heat-preservation foaming cement as claimed in claim 1, which is characterized in that: and the bottom of the supporting column (3) is rotatably provided with a rolling ball (24) which is in rolling fit with the bottom surface of the annular groove (2).
4. The preparation method of the heat-preservation foaming cement as claimed in claim 1, which is characterized in that: an air inlet groove (25) penetrating through the side wall and the heat insulation layer (22) is horizontally formed in the position, between the two adjacent material guide plates (10), on the outer side wall of the mounting cylinder (4); a sealing ring (26) which is coincident with the axis of the air inlet groove (25) is fixedly arranged in the air inlet groove, and a guide rod (27) is horizontally and fixedly arranged on the end surface, close to the square groove (5), of the sealing ring (26); a sealing plug (28) which is matched with the sealing ring (26) is matched on the guide rod (27) in a sliding way; a support sheet (29) is fixedly arranged at the end part of the guide rod (27); a return spring (30) sleeved on the guide rod (27) is fixedly connected between the support sheet (29) and the sealing plug (28).
5. The preparation method of the heat-preservation foaming cement as claimed in claim 4, which is characterized in that: and a filter screen (31) is fixedly arranged on one side, close to the square groove (5), of the sealing ring (26) on the inner wall of the air inlet groove (25).
6. The preparation method of the heat-preservation foaming cement as claimed in claim 4, which is characterized in that: the bevel gear ring (20) is an incomplete bevel gear ring, and a plurality of groups of transmission teeth are uniformly arranged on the bevel gear ring (20) at intervals; the second air outlet groove (12) is strip-shaped, and a strip-shaped accommodating groove (32) is vertically formed in the position, corresponding to the second air outlet groove (12), of the upper surface of the material guide plate (10) in a penetrating mode; a telescopic plate (33) is vertically and slidably matched in the accommodating groove (32); the bottom of the expansion plate (33) is fixedly provided with a wind shield sheet (34) positioned in the first air outlet groove (11); an elastic rope (35) is fixedly connected between the bottom surface of the wind shield (34) and the bottom surface of the first air outlet groove (11).
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Effective date of registration: 20220628 Address after: 238000 Sanbing Town, Juchao District, Chaohu City, Anhui Province Applicant after: Sinoma Anhui Cement Co.,Ltd. Address before: 441000 Xiangyang high tech entrepreneurship service center, No.2, zhuiri Road, Xiangyang City, Hubei Province Applicant before: Wu Si |
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