Geopolymer processing device

Abstract

The invention relates to the field of geopolymer processing, in particular to a geopolymer processing device which comprises a pretreatment unit, an activation unit and a negative pressure unit. The pretreatment unit realizes integration of crushing, screening and drying of raw materials through built-in steel balls, a crushing roller with sieve pores and a multi-stage hot air drying system; the activation unit adopts an inner and outer cylinder structure, and materials are uniformly mixed through angle-adjustable stirring blades and dynamic spraying of an activating agent; and the negative pressure unit is used for defoaming by stages through gradient negative pressure, and is combined with linkage control of the sealing part and the feeding part, so that the defoaming efficiency is remarkably improved. According to the device, through modular integration and process optimization, the problems that a traditional processing flow is dispersed, the energy consumption is high and the product quality is unstable are solved, and the device is suitable for large-scale industrial production.

Description

Technical Field

[0001] The present invention relates to the field of geopolymers processing, and particularly to a device for processing geopolymers. Background Art

[0002] As a new type of environmental protection building material, geopolymers are widely used in the fields of solid waste utilization and low-carbon buildings. Traditional preparation processes generally include processes such as crushing, screening, drying, mixing, defoaming, and forming. Each link is operated separately and independently completed, resulting in large equipment floor area, high energy consumption, and low material flow efficiency.

[0003] In the traditional crushing and drying links, the crushed materials need to be sorted by vibrating sieves. The sieve meshes are easily blocked and require frequent maintenance, further reducing production efficiency. During the drying process, the hot air distribution is uneven. The materials close to the heat source are easily over-dried, while there is residual moisture in the edge area, resulting in a large difference in the humidity of the powder materials and affecting the mixing uniformity.

[0004] Currently, most mixing devices adopt a fixed stirring structure. The spraying of activators is concentrated and difficult to disperse evenly, resulting in incomplete local reactions of the materials and obvious stress concentration points easily formed inside the products, significantly reducing the compressive strength.

[0005] Existing defoaming treatment technologies adopt a constant negative pressure mode. Although they can remove some large air bubbles, their ability to eliminate micron-sized air bubbles is limited, resulting in residual micro-bubbles inside the finished products and a decline in impermeability and durability. Summary of the Invention

[0006] In order to solve the foregoing technical problems, the present invention provides a device for processing geopolymers, which solves the problems of scattered traditional processing processes, high energy consumption, and unstable product quality through modular integration and process optimization, and is specifically achieved through the following technical solutions.

[0007] A device for processing geopolymers according to the present invention includes a pretreatment unit, an activation unit, and a negative pressure unit; The pretreatment unit is used for integrated operations of crushing, screening, and drying raw materials, and includes a crushing drum, a first hot air blower, and a second hot air blower. Steel balls are provided inside the crushing drum, and sieve holes are circumferentially provided. Both ends thereof are connected to the body of a roller crusher through connecting pipes, and hot air is introduced into the inside through the first hot air blower; the crushed powder materials enter a leakage hopper and are secondarily dried through the second hot air blower; The activation unit includes an outer cylinder and an inner cylinder. Stirring blades driven by a first motor are provided inside the inner cylinder. A discharge port is circumferentially provided on the inner cylinder, and a conveying part is provided at the bottom of the outer cylinder for stirring the powder materials mixed with the activator to form geopolymers; The negative pressure unit includes a box body, which is divided into two independent spaces by a partition. Negative pressure pumps are respectively installed at the tops of the two spaces to form a gradient negative pressure. The feeding part controls the material to enter the two spaces in stages through a sealing part, completing the gradient defoaming process.

[0008] Preferably, one end of the crushing drum of the pretreatment unit is connected to a first hot air blower through a connecting pipe, and the other end is communicated with a first hopper through a first auger.

[0009] Preferably, air holes are provided between the leakage hopper and the flow equalizing box, and the second hot air blower passes hot air into the leakage hopper through the flow equalizing box.

[0010] Preferably, a support plate is circumferentially provided on the inner cylinder of the activation unit, which is inclined and installed below the discharge port. A nozzle for spraying an activator is provided above the support plate.

[0011] Preferably, the stirring blades are installed on the side of the installation box. A second motor is fixed in the installation box. The output end of the second motor is coaxially fixed with a screw rod. The screw rod is threadedly connected with a slider. The slider is slidably arranged in a guide rail, and the guide rail is fixed to the installation box; A driving pin is fixed to the side of the slider. The driving pin is slidably arranged in a long hole opened in a swing rod. The swing rod is fixed to a rotating pin. The rotating pin is rotatably installed on the side wall of the installation box.

[0012] Preferably, the conveying part includes a stirring barrel, a stirring shaft driven by a third motor and a second auger.

[0013] Preferably, the sealing part includes a sealing sliding plate and a telescopic electric cylinder for realizing the sealing of the two spaces.

[0014] Preferably, the feeding part includes a second bin. Electric telescopic rods and rotary doors are symmetrically arranged on the side of the second bin. The electric telescopic rods can drive the rotary doors to open and close the bin outlet.

[0015] Preferably, the two independent spaces of the negative pressure unit are communicated through a second set of sealing parts, and the negative pressure value of the second space is lower than that of the first space.

[0016] Preferably, a third set of sealing parts is provided at the bottom outlet of the box body.

[0017] After adopting the above technical solutions, the beneficial effects of the present invention are: 1. The crushing drum is provided with sieve holes. Combined with the multi-stage drying of the first and second hot air blowers, crushing, screening and drying are completed synchronously, reducing the process flow, lowering energy consumption and dust pollution. Moreover, the design of the flow equalizing box and air holes makes the hot air evenly distributed, improving the drying efficiency and material uniformity.

[0018] 2. The inclination angle of the stirring blade is adjusted by the second motor driving the screw, and the mixing and discharging modes can be flexibly switched. The collaborative design of the support plate and the nozzle enables uniform spraying of the activator, avoiding uneven local concentration and improving the mixing quality.

[0019] 3. The negative pressure unit adopts a staged gradient pressure design. Combining the precise control of the sealed sliding plate and the telescopic electric cylinder, the defoaming treatment is completed step by step, effectively removing the internal bubbles of the material and significantly improving the density and mechanical strength of the geopolymer. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0021] Figure 1 It is an installation schematic diagram of the geopolymer processing device; Figure 2 It is a three-dimensional view of the pretreatment unit; Figure 3 It is for Figure 2 longitudinal sectional view of; Figure 4 It is a three-dimensional view of the activation unit; Figure 5 It is for Figure 4 front sectional view of; Figure 6 It is for Figure 4 three-dimensional view of some components in; Figure 7 It is for Figure 6 three-dimensional view of some parts in; Figure 8 It is a three-dimensional view of the negative pressure unit; Figure 9 It is for Figure 8 front sectional view of; Figure 10 It is for Figure 8 three-dimensional view of some parts in.

[0022] Description of the reference numerals: 100 - Pretreatment unit, 101 - Crushing drum, 102 - Connecting pipe, 103 - First hot air blower, 104 - First auger, 105 - First hopper, 106 - Leakage hopper, 107 - Flow equalizing box, 108 - Air holes, 109 - Second hot air blower; 200 - Activation unit, 201 - Outer cylinder, 202 - Inner cylinder, 203 - First motor, 204 - Feed inlet, 205 - Discharge port, 206 - Support plate, 207 - Nozzle, 208 - Installation box, 209 - Stirring blade, 210 - Second motor, 211 - Screw, 212 - Slide block, 213 - Guide rail, 214 - Driving pin, 215 - Swing rod, 216 - Rotating pin, 220 - Conveying part, 221 - Stirring barrel, 222 - Third motor, 223 - Stirring shaft, 224 - Second auger; 300 - Negative pressure unit, 301 - Box body, 302 - Partition board, 303 - Negative pressure pump, 310 - Feeding part, 311 - Second bin, 312 - Electric telescopic rod, 313 - Rotary door, 320 - Sealing part, 321 - Sealing sliding plate, 322 - Telescopic electric cylinder. Detailed implementation manners

[0023] The features and exemplary embodiments of various aspects of the present invention will be described in detail below. To make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain the present invention and are not configured to limit the present invention. For those skilled in the art, the present invention can be implemented without some of these specific details. The following description of the embodiments is only provided to provide a better understanding of the present invention by showing examples of the present invention.

[0024] The orientation terms appearing in the following description are all the directions shown in the drawings and do not limit the specific structure of the present invention. In the description of the present invention, it should also be noted that unless otherwise clearly specified and limited, the terms "installation, connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection or an integral connection; it can be directly connected or indirectly connected. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] An embodiment of the present invention provides a geopolymer processing device. Refer to Figure 1 , this geopolymer processing device includes a pretreatment unit 100, an activation unit 200 and a negative pressure unit 300. The pretreatment unit 100 is used for the integrated operation of crushing, screening and drying of raw materials. The activation unit 200 is used to mix the sieved and dried raw materials, uniformly add an activator to form a geopolymer, and convey it to the negative pressure unit 300. The negative pressure unit 300 performs a defoaming treatment on the geopolymer through a gradient negative pressure to obtain a final product.

[0026] Refer to Figure 2 , Figure 3, The pretreatment unit 100 includes a crushing drum 101. Steel balls are placed inside the crushing drum 101. A number of sieve holes are evenly formed along the circumferential direction of the crushing drum 101. Both ends of the crushing drum 101 are rotatably installed on the body of the roller crusher through connecting pipes 102 respectively. One of the connecting pipes 102 is connected to the air outlet of the first hot air blower 103 for sending hot air into the inside of the crushing drum 101. A first auger 104 is installed inside the other connecting pipe 102. The side surface of the first auger 104 is fixedly communicated with the first hopper 105, so as to convey the raw materials in the first hopper 105 into the inside of the crushing drum 101.

[0027] During the operation of the roller crusher, the crushing drum 101 is driven to rotate. The steel balls and raw materials in the crushing drum 101 rotate, tumble and collide along with the rotation of the crushing drum 101, so as to realize the crushing and grinding of the raw materials. During this process, hot air is sent into the inside of the crushing drum 101 through the first hot air blower 103, and preliminary drying is realized while the raw materials are being crushed.

[0028] A leakage hopper 106 is installed directly below the crushing drum 101. The side surface of the leakage hopper 106 is fixed to the flow equalizing box 107. A number of air holes 108 are formed between the flow equalizing box 107 and the leakage hopper 106. One side of the flow equalizing box 107 away from the leakage hopper 106 is fixedly communicated with the air outlets of a number of second hot air blowers 109.

[0029] The powdered raw materials after being crushed and ground in the crushing drum 101 fall into the leakage hopper 106 through the sieve holes formed on the side wall of the crushing drum 101. At the same time, a number of second hot air blowers 109 send hot air into the leakage hopper 106 through the flow equalizing box 107 and the air holes 108 to realize the secondary drying of the raw material powder.

[0030] Through the above structure, the simultaneous crushing, screening and drying of the raw materials are realized. And during the crushing and screening process of the raw materials, the material particles are in a tumbling or non-contact state with each other, making the hot air drying effect better.

[0031] See Figures 4 to 7 , The activation unit 200 includes an outer cylinder 201. An inner cylinder 202 is coaxially fixed inside the outer cylinder 201. A number of feed ports 204 are evenly formed along the circumferential direction on the upper side surface of the inner cylinder 202. The raw material powder after being crushed, screened and dried in the pretreatment unit 100 is sent into the inside of the inner cylinder 202 through the feed ports 204.

[0032] A first motor 203 is fixedly installed on the top of the inner cylinder 202. An installation box 208 is installed on the output shaft of the first motor 203. A stirring blade 209 is hinged on the side surface of the installation box 208. The installation box 208 and the stirring blade 209 are arranged inside the inner cylinder 202 to complete the mixing of the powder.

[0033] In the middle of the inner cylinder 202, a number of discharge ports 205 are evenly arranged along its circumferential direction. The discharge ports 205 connect the inside of the inner cylinder 202 and the inside of the outer cylinder 201. During the rotation of the stirring blades 209, the powder inside the inner cylinder 202 can be pushed through the discharge ports 205 into the outer cylinder 201.

[0034] A support plate 206 is fixedly installed along the circumferential direction at a position outside the inner cylinder 202 below the discharge ports 205. The support plate 206 is inclined, and it is inclined along the direction from the inside to the outside and from top to bottom, so that the powder pushed out through the discharge ports 205 can slide down along the upper surface of the support plate 206 under the action of gravity.

[0035] A nozzle 207 is fixedly installed directly above the support plate 206. The activator can be evenly sprayed out from the nozzle 207, so that the powder sliding down along the upper surface of the support plate 206 can evenly contact the activator, which is convenient for the two to be evenly mixed.

[0036] A conveying part 220 is installed at the bottom of the outer cylinder 201. The conveying part 220 is used to further mix the powder and the activator evenly to form a preliminary geopolymer. The conveying part 220 includes a stirring barrel 221. The stirring barrel 221 is fixedly connected to the bottom of the outer cylinder 201. A third motor 222 is fixedly installed at the first end of the conveying part 220. The output end of the third motor 222 hermetically passes through the end face of the stirring barrel 221 and is fixed to a stirring shaft 223 rotatably arranged inside the stirring barrel 221. A second auger 224 is installed at the second end of the stirring barrel 221 for discharging the geopolymer outward.

[0037] As a further explanation of the above embodiment, see Figure 6 、 Figure 7 A second motor 210 is fixedly installed in the installation box 208. The output end of the second motor 210 is coaxially fixed to a screw 211. The screw 211 is threadedly connected to a slider 212. The slider 212 is slidably arranged in a guide rail 213. The guide rail 213 is fixed to the inner surface of the installation box 208.

[0038] A driving pin 214 is fixed to the side of the slider 212. The driving pin 214 is slidably arranged in a long hole opened in a swing rod 215. One end of the swing rod 215 is fixed to a rotating pin 216. The rotating pin 216 is rotatably installed on the side wall of the installation box 208.

[0039] Through the above structure, the inclination angle of the stirring blade 209 can be freely adjusted in this embodiment. When the inclination angle of the stirring blade 209 is small, that is, the highest point of the stirring blade 209 is lower than the discharge port 205, the inside of the inner cylinder 202 is in the powder mixing stage at this time. After the powder in the inner cylinder 202 is mixed evenly, the second motor 210 drives the screw 211 to rotate, adjusts the height position of the slider 212, and further realizes the adjustment of the inclination angle of the stirring blade 209, so that the highest point of the stirring blade 209 is higher than the discharge port 205. At this time, when the stirring blade 209 rotates, it can smoothly convey the evenly mixed powder in the inner cylinder 202 to the outer cylinder 201 through the discharge port 205.

[0040] See Figures 8 to 10 , the negative pressure unit 300 includes a box body 301. The box body 301 is divided into two independent spaces by a partition 302. Negative pressure pumps 303 are fixedly installed at the tops of the two spaces respectively, and are used to discharge the gas in the space to the outside.

[0041] Above the box body 301, a feeding part 310 is fixedly installed, which is used to intermittently feed the geopolymers into the inside of the box body 301. A sealing part 320 is fixedly installed between the feeding part 310 and the box body 301. The sealing part 320 is used to seal the inlet opened at the top of the box body 301. A second group of sealing parts 320 are fixedly installed on the side wall of the partition 302 to block the through hole opened on the partition 302. A third group of sealing parts 320 are fixedly installed at the bottom of the side surface of the box body 301 to block the outlet of the box body 301.

[0042] Among them, the sealing part 320 includes a sealing sliding plate 321 and a telescopic electric cylinder 322. The output end of the telescopic electric cylinder 322 is fixed to the sealing sliding plate 321 and is used to drive the reciprocating sliding of the sealing sliding plate 321.

[0043] Among them, the feeding part 310 includes a second bin 311. An electric telescopic rod 312 is fixedly installed on the side surface of the second bin 311. The output end of the electric telescopic rod 312 is hinged to a rotating door 313. The rotating door 313 is rotatably installed at the bottom of the second bin 311. The mechanism body composed of the electric telescopic rod 312 and the rotating door 313 is symmetrically distributed on both sides of the second bin 311. This structure drives the rotation of the rotating door 313 along its axis through the telescopic movement of the electric telescopic rod 312, so as to realize the switching between the two states of blocking and opening the outlet at the bottom of the second bin 311.

[0044] The geopolymers after being mixed and processed by the activation unit 200 are transported into the feeding part 310. By driving the opening of the rotating door 313 through the electric telescopic rod 312, and at the same time driving the opening of the sealing sliding plate 321 through the telescopic electric cylinder 322, the geopolymers in the feeding part 310 are transported into the first space in the box body 301. At this time, the telescopic electric cylinder 322 drives the sealing sliding plate 321 to close, and the negative pressure pump 303 installed above this space is started to adjust the first space to a negative pressure state, so as to realize the defoaming treatment of the geopolymers.

[0045] After the geopolymers complete the first-stage defoaming treatment in the first space, they are transported to the second space through the opening of the second group of sealing parts 320 for the second-stage defoaming treatment.

[0046] Among them, the pressure in the second space is less than that in the first space, so that the defoaming treatment of the geopolymers presents a gradient state, thus better completing the defoaming treatment of the geopolymers.

[0047] According to the embodiments of the present invention as described above, these embodiments do not describe all the details in detail, nor do they limit the invention to only the specific embodiments. Obviously, according to the above description, many modifications and changes can be made. The present specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the present invention, so that those skilled in the art can make good use of the present invention and the modified use based on the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A geopolymer processing device, characterized in that, It includes a pretreatment unit (100), an activation unit (200) and a negative pressure unit (300); The pretreatment unit (100) is used for performing integrated operations of crushing, screening and drying on raw materials, and includes a crushing drum (101), a first hot air blower (103) and a second hot air blower (109). Steel balls are provided inside the crushing drum (101), and sieve holes are circumferentially provided. Both ends thereof are connected to the body of the roller crusher through a connecting pipe (102), and hot air is introduced into the inside through the first hot air blower (103); the crushed powder enters the leakage hopper (106) and is secondarily dried through the second hot air blower (109); The activation unit (200) includes an outer cylinder (201) and an inner cylinder (202). A stirring blade (209) driven by a first motor (203) is provided inside the inner cylinder (202). A discharge port (205) is circumferentially provided on the inner cylinder (202). A conveying part (220) is provided at the bottom of the outer cylinder (201) for stirring the powder mixed with the activator to form geopolymers; The negative pressure unit (300) includes a box body (301), which is separated into two independent spaces by a partition plate (302). Negative pressure pumps (303) are respectively installed at the tops of the two spaces to form a gradient negative pressure. The feeding part (310) controls the material to enter the two spaces in stages through a sealing part (320) to complete the gradient defoaming treatment.

2. The geopolymer processing device according to claim 1, characterized in that, One end of the crushing drum (101) of the pretreatment unit (100) is connected to the first hot air blower (103) through a connecting pipe (102), and the other end is communicated with the first hopper (105) through a first auger (104).

3. The geopolymer processing device according to claim 2, wherein, An air hole (108) is provided between the leakage hopper (106) and the flow equalizing box (107), and the second hot air blower (109) introduces hot air into the leakage hopper (106) through the flow equalizing box (107).

4. The geopolymer processing device according to claim 1, characterized in that A support plate (206) is circumferentially provided on the inner cylinder (202) of the activation unit (200). It is inclined and installed below the discharge port (205). A nozzle (207) for spraying the activator is provided above the support plate (206).

5. The geopolymer processing device according to claim 4, characterized in that The stirring blade (209) is installed on the side of the installation box (208). A second motor (210) is fixed inside the installation box (208). The output end of the second motor (210) is coaxially fixed to a screw rod (211). The screw rod (211) is threadedly connected to a slider (212). The slider (212) is slidably arranged inside a guide rail (213), and the guide rail (213) is fixed to the installation box (208); A driving pin (214) is fixed to the side of the slider (212). The driving pin (214) is slidably arranged inside a long hole provided in a swing rod (215). The swing rod (215) is fixed to a rotating pin (216). The rotating pin (216) is rotatably installed on the side wall of the installation box (208).

6. The geopolymer processing device according to claim 1, characterized in that, The conveying part (220) includes a stirring barrel (221), a stirring shaft (223) driven by a third motor (222) and a second auger (224).

7. The geopolymer processing device according to claim 1, characterized in that, The sealing part (320) includes a sealing sliding plate (321) and a telescopic electric cylinder (322) for realizing the sealing of the two spaces.

8. The geopolymer processing device according to claim 7, characterized in that, The feeding part (310) includes a second bin (311). Electric telescopic rods (312) and rotary doors (313) are symmetrically arranged on the side surface of the second bin (311). The electric telescopic rods (312) can drive the rotary doors (313) to open and close the bin outlet.

9. The geopolymer processing device according to claim 1, characterized in that, Two independent spaces of the negative pressure unit (300) are communicated through a second group of sealing parts (320), and the negative pressure value of the second space is lower than that of the first space.

10. The geopolymer processing device according to claim 9, wherein, A third group of sealing parts (320) is arranged at the bottom outlet of the box body (301).

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