CN120326784A

CN120326784A - A geopolymer processing device

Info

Publication number: CN120326784A
Application number: CN202510819593.2A
Authority: CN
Inventors: 郭飞; 范军蔓; 刘朋程; 钟文强; 李新钰
Original assignee: Weifang Sanjian Concrete Building Materials Co ltd
Current assignee: Weifang Sanjian Concrete Building Materials Co ltd
Priority date: 2025-06-19
Filing date: 2025-06-19
Publication date: 2025-07-18

Abstract

The present invention relates to the field of geopolymer processing, and in particular to a geopolymer processing device, including a pretreatment unit, an activation unit and a negative pressure unit. The pretreatment unit realizes the integration of crushing, screening and drying of raw materials through a crushing drum with built-in steel balls and sieve holes and a multi-stage hot air drying system; the activation unit adopts an inner and outer cylinder structure, and ensures uniform mixing of materials through adjustable angle stirring blades and dynamic spraying activators; the negative pressure unit degasses in stages through gradient negative pressure, combined with the linkage control of the sealing part and the feeding part, which significantly improves the defoaming efficiency. The device solves the problems of traditional processing flow dispersion, high energy consumption and unstable product quality through modular integration and process optimization, and is suitable for large-scale industrial production.

Description

Geopolymer processingequipment

Technical Field

The invention relates to the field of geopolymer processing, in particular to a geopolymer processing device.

Background

The geopolymer is used as a novel environment-friendly building material, is widely applied in the fields of solid waste utilization and low-carbon construction, and the traditional preparation process generally comprises the procedures of crushing, screening, drying, mixing, defoaming, forming and the like, and each link is operated respectively and completed independently, so that the equipment occupies a large area, has high energy consumption and has low material circulation efficiency.

In the traditional crushing and drying link, crushed materials are required to be separated through a vibrating screen, the screen is easy to block and frequent to maintain, and the production efficiency is further reduced. In the drying process, hot air is unevenly distributed, materials close to a heat source are easy to excessively dry, and water is remained in the edge area, so that the humidity difference of powder is large, and the mixing uniformity is affected.

At present, a mixing device mostly adopts a fixed stirring structure, the activator is sprayed and concentrated and is difficult to uniformly disperse, so that partial reaction of materials is insufficient, stress concentration points are easily formed in the product, and the compression strength is obviously reduced.

The existing defoaming treatment technology adopts a constant negative pressure mode, and can remove part of large bubbles, but has limited capability of eliminating micron-sized bubbles, so that residual micro bubbles in the finished product are reduced in impermeability and durability.

Disclosure of Invention

In order to solve the technical problems, the invention provides a geopolymer processing device, which solves the problems of dispersion, high energy consumption and unstable product quality of the traditional processing flow through modularized integration and process optimization.

The invention relates to a geopolymer processing device which comprises a pretreatment unit, an activation unit and a negative pressure unit, wherein the pretreatment unit is used for carrying out pretreatment on a geopolymer;

The pretreatment unit is used for carrying out crushing, screening and drying integrated operation on raw materials and comprises a crushing roller, a first air heater and a second air heater, wherein steel balls are arranged in the crushing roller, sieve holes are circumferentially formed in the crushing roller, two ends of the steel balls are connected to a roller crusher body through connecting pipes, and hot air is introduced into the crushing roller body through the first air heater;

The activation unit comprises an outer cylinder and an inner cylinder, wherein a stirring blade driven by a first motor is arranged in the inner cylinder, a discharge port is formed in the circumferential direction of the inner cylinder, and a conveying part is arranged at the bottom of the outer cylinder and used for stirring powder mixed with an activating agent to form a geopolymer;

The negative pressure unit comprises a box body which is divided into two independent spaces through a partition plate, a negative pressure pump is respectively arranged at the tops of the two spaces to form gradient negative pressure, and a feeding part controls materials to enter the two spaces in stages through a sealing part to complete gradient defoaming treatment.

Preferably, one end of the crushing roller of the pretreatment unit is connected with the first air heater through a connecting pipe, and the other end of the crushing roller is communicated with the first hopper through a first auger.

Preferably, an air hole is arranged between the material leakage hopper and the flow equalizing box, and the second air heater is used for introducing hot air into the material leakage hopper through the flow equalizing box.

Preferably, a supporting plate is arranged on the circumference of the inner cylinder of the activating unit and is obliquely arranged below the discharge hole, and a nozzle for spraying the activating agent is arranged above the supporting plate.

Preferably, the stirring blade is arranged on the side surface of the mounting box, a second motor is fixed in the mounting box, the output end of the second motor is coaxially fixed with a screw rod, the screw rod is in threaded connection with a sliding block, the sliding block is arranged in a guide rail in a sliding manner, and the guide rail is fixed with the mounting box;

The side of slider is fixed with the driving pin, the driving pin slides and disposes in seting up in the rectangular downthehole of swinging arms, the swinging arms is fixed with the rotation round pin, the rotation round pin rotates and installs on the mounting box lateral wall.

Preferably, the conveying part comprises a stirring barrel, a stirring shaft driven by a third motor and a second auger.

Preferably, the sealing part comprises a sealing sliding plate and a telescopic electric cylinder, and is used for sealing two spaces.

Preferably, the feeding portion comprises a second bin, an electric telescopic rod and a revolving door are symmetrically arranged on the side face of the second bin, and the electric telescopic rod can drive the revolving door to open and close a bin outlet.

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

Preferably, the outlet at the bottom of the box body is provided with a third group of sealing parts.

After the technical scheme is adopted, the invention has the beneficial effects that:

1. the crushing roller is provided with the sieve mesh, combines first, second air heater multistage drying, realizes that crushing, screening and stoving are accomplished in step, reduces the process circulation, reduces energy consumption and dust pollution to flow equalizing case and gas pocket design make hot-blast evenly distributed, promote drying efficiency and material homogeneity.

2. Through second motor drive screw rod regulation stirring leaf inclination, mix with the discharge mode in a flexible way, the collaborative design of backup pad and nozzle realizes that the activator evenly sprays, avoids local concentration uneven, promotes mixing quality.

3. The negative pressure unit adopts a staged gradient pressure design, combines the accurate control of the sealing sliding plate and the telescopic electric cylinder, completes defoaming treatment step by step, effectively removes air bubbles in the material, and remarkably improves the compactness and mechanical strength of the geopolymer.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings can be obtained according to these drawings without inventive effort to a person skilled in the art.

FIG. 1 is a schematic installation diagram of a geopolymer processing apparatus;

FIG. 2 is a perspective view of a preprocessing unit;

FIG. 3 is a longitudinal cross-sectional view of FIG. 2;

FIG. 4 is a perspective view of an activation unit;

FIG. 5 is a front cross-sectional view of FIG. 4;

FIG. 6 is a perspective view of a portion of the components of FIG. 4;

FIG. 7 is a perspective view of a portion of the part of FIG. 6;

fig. 8 is a perspective view of the negative pressure unit;

FIG. 9 is a front cross-sectional view of FIG. 8;

Fig. 10 is a perspective view of a portion of the components of fig. 8.

Reference numerals illustrate:

100-pretreatment units, 101-crushing rollers, 102-connecting pipes, 103-first air heaters, 104-first augers, 105-first hoppers, 106-hopper leakage, 107-flow equalizing boxes, 108-air holes and 109-second air heaters;

200-activation units, 201-outer cylinders, 202-inner cylinders, 203-first motors, 204-feed inlets, 205-discharge outlets, 206-support plates, 207-nozzles, 208-mounting boxes, 209-stirring blades, 210-second motors, 211-screws, 212-sliders, 213-guide rails, 214-driving pins, 215-swinging rods, 216-rotating pins, 220-conveying parts, 221-stirring barrels, 222-third motors, 223-stirring shafts, 224-second augers;

300-negative pressure unit, 301-box, 302-baffle, 303-negative pressure pump, 310-feed portion, 311-second feed bin, 312-electric telescopic rod, 313-revolving door, 320-sealing portion, 321-sealed sliding plate, 322-telescopic electric cylinder.

Detailed Description

Features and exemplary embodiments of various aspects of the present invention will be described in detail below, and in order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings and the detailed embodiments. It should be understood that the specific embodiments described herein are merely configured to illustrate the invention and are not configured to limit the invention. It will be apparent to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the invention by showing examples of the invention.

The directional terms appearing in the following description are those directions shown in the drawings and do not limit the specific structure of the invention. In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the term "mounted" and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected or integrally connected, and may be directly connected or indirectly connected. The specific meaning of the above terms in the present invention can be understood as appropriate by those of ordinary skill in the art.

Referring to fig. 1, the embodiment of the invention provides a geopolymer processing device, which comprises a pretreatment unit 100, an activation unit 200 and a negative pressure unit 300, wherein the pretreatment unit 100 is used for smashing, screening and drying integrated operation of raw materials, the activation unit 200 is used for uniformly mixing the screened and dried raw materials, uniformly adding an activating agent to form a geopolymer, conveying the geopolymer to the negative pressure unit 300, and the negative pressure unit 300 is used for defoaming the geopolymer through gradient negative pressure to obtain a final product.

Referring to fig. 2 and 3, the pretreatment unit 100 includes a crushing drum 101, steel balls are contained in the crushing drum 101, a plurality of sieve holes are uniformly formed in the crushing drum 101 along the circumferential direction of the crushing drum 101, two ends of the crushing drum 101 are respectively rotatably mounted on a drum crusher body through connecting pipes 102, one connecting pipe 102 is connected with an air outlet of a first air heater 103 and is used for feeding hot air into the crushing drum 101, a first auger 104 is mounted in the other connecting pipe 102, and the side surface of the first auger 104 is fixedly communicated with a first hopper 105, so that raw materials in the first hopper 105 are conveyed into the crushing drum 101.

The crushing roller 101 is driven to rotate in the running process of the roller crusher, and steel balls and raw materials in the crushing roller 101 rotate, roll and collide along with the crushing roller 101, so that crushing and grinding of the raw materials are realized, hot air is fed into the crushing roller 101 through the first hot air blower 103 in the process, and primary drying is realized while the raw materials are crushed.

A hopper 106 is arranged right below the crushing roller 101, the side surface of the hopper 106 is fixed with a flow equalizing box 107, a plurality of air holes 108 are formed between the flow equalizing box 107 and the hopper 106, and one side of the flow equalizing box 107 away from the hopper 106 is fixedly communicated with air outlets of a plurality of second air heaters 109.

The crushed and ground powdery raw materials in the crushing roller 101 fall into the hopper 106 through the sieve holes formed in the side wall of the crushing roller 101, and meanwhile, a plurality of second air heaters 109 send hot air into the hopper 106 through the flow equalizing box 107 and the air holes 108, so that the raw material powder is dried for the second time.

Through the structure, the raw material crushing, screening and drying are synchronously carried out, and in the raw material crushing and screening process, the material particles are in a rolling state or a state of being not contacted with each other, so that the hot air drying effect is better.

Referring to fig. 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 plurality of feed inlets 204 are uniformly formed on the upper side surface of the inner cylinder 202 along the circumferential direction, and raw material powder after crushing, sieving and drying in the pretreatment unit 100 is fed into the inner cylinder 202 through the feed inlets 204.

The top of the inner barrel 202 is fixedly provided with a first motor 203, an output shaft of the first motor 203 is provided with a mounting box 208, the side surface of the mounting box 208 is hinged with stirring blades 209, and the mounting box 208 and the stirring blades 209 are configured inside the inner barrel 202 and used for completing uniform mixing of powder.

A plurality of discharge ports 205 are uniformly formed in the middle of the inner barrel 202 along the circumferential direction of the inner barrel, the inner barrel 202 and the outer barrel 201 are communicated through the discharge ports 205, and powder in the inner barrel 202 can be pushed into the outer barrel 201 through the discharge ports 205 in the rotation process of the stirring blades 209.

The support plate 206 is fixedly mounted on the outer side of the inner cylinder 202 below the discharge opening 205 in the circumferential direction, the support plate 206 is obliquely arranged, and the support plate 206 is obliquely arranged in the direction from inside to outside from top to bottom, so that powder pushed out through the discharge opening 205 can slide down along the upper surface of the support plate 206 under the action of gravity.

A nozzle 207 is fixedly arranged right above the supporting plate 206, and the activating agent can be uniformly sprayed outwards from the nozzle 207, so that powder sliding along the upper surface of the supporting plate 206 is uniformly contacted with the activating agent, and the powder and the activating agent are uniformly mixed.

The conveying part 220 is installed at the bottom of the outer barrel 201, the conveying part 220 is used for further uniformly mixing powder and an activating agent to form a preliminary geopolymer, the conveying part 220 comprises a stirring barrel 221, the stirring barrel 221 is fixedly communicated with the bottom of the outer barrel 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 penetrates through the end face of the stirring barrel 221 in a sealing mode and is fixed with a stirring shaft 223 rotatably arranged inside the stirring barrel 221, and a second auger 224 is installed at the second end of the stirring barrel 221 and used for outputting the geopolymer outwards.

As a further explanation of the above embodiment, referring to fig. 6 and 7, the second motor 210 is fixedly installed in the installation box 208, the output end of the second motor 210 is coaxially fixed with the screw 211, the screw 211 is in threaded connection with the slider 212, the slider 212 is slidably disposed in the guide rail 213, and the guide rail 213 is fixed to the inner surface of the installation box 208.

A driving pin 214 is fixed to a side surface of the slider 212, the driving pin 214 is slidably disposed in a long hole formed in a swing lever 215, one end of the swing lever 215 is fixed to a rotation pin 216, and the rotation pin 216 is rotatably mounted on a side wall of the mounting box 208.

Through the structure, the inclination of the stirring blade 209 can be freely adjusted, when the inclination of the stirring blade 209 is smaller, namely, the highest point of the stirring blade 209 is lower than the discharge opening 205, the inside of the inner barrel 202 is in the mixing stage of powder at this time, after the powder in the inner barrel 202 is uniformly mixed, the screw 211 is driven to rotate through the second motor 210, the height position of the sliding block 212 is adjusted, and then the inclination of the stirring blade 209 is adjusted, so that the highest point of the stirring blade 209 is higher than the discharge opening 205, and the powder uniformly mixed in the inner barrel 202 can be smoothly conveyed into the outer barrel 201 through the discharge opening 205 when the stirring blade 209 rotates.

Referring to fig. 8 to 10, the negative pressure unit 300 includes a case 301, in which the case 301 is partitioned into two independent spaces by a partition plate 302, and a negative pressure pump 303 is fixedly installed at the top of each of the two spaces for discharging the gas in the space to the outside.

The feeding part 310 is fixedly arranged above the box 301 and used for intermittently feeding the geopolymer into the box 301, the sealing part 320 is fixedly arranged between the feeding part 310 and the box 301, the sealing part 320 is used for sealing an inlet formed in the top of the box 301, the second group of sealing parts 320 are fixedly arranged on the side wall of the partition 302 and used for sealing a through hole formed in the partition 302, and the third group of sealing parts 320 are fixedly arranged at the bottom of the side face of the box 301 and used for sealing an outlet of the box 301.

The sealing part 320 includes a sealing sliding plate 321 and a telescopic cylinder 322, and an output end of the telescopic cylinder 322 is fixed to the sealing sliding plate 321 for driving the sealing sliding plate 321 to slide reciprocally.

The feeding portion 310 includes a second bin 311, an electric telescopic rod 312 is fixedly installed on a side surface of the second bin 311, an output end of the electric telescopic rod 312 is hinged to a revolving door 313, the revolving door 313 is rotatably installed at the bottom of the second bin 311, mechanism bodies formed by the electric telescopic rod 312 and the revolving door 313 are symmetrically distributed on two sides of the second bin 311, and the revolving door 313 is driven to rotate along an axis of the mechanism bodies by means of expansion of the electric telescopic rod 312, so that blocking and opening of an outlet at the bottom of the second bin 311 are switched.

The geopolymer mixed and processed by the activating unit 200 is conveyed into the feeding part 310, the rotary door 313 is driven to be opened by the electric telescopic rod 312, the sealing sliding plate 321 is driven to be opened by the telescopic electric cylinder 322, so that the geopolymer in the feeding part 310 is conveyed into the first space in the box 301, at the moment, the sealing sliding plate 321 is driven to be closed by the telescopic electric cylinder 322, the negative pressure pump 303 arranged above the space is started, and the first space is adjusted to be in a negative pressure state, so that defoaming treatment of the geopolymer is realized.

After the geopolymer is subjected to the defoaming treatment of the first stage in the first space, the geopolymer is transported to the second space by opening the second set of sealing parts 320, and the defoaming treatment of the second stage is performed.

The pressure in the second space is smaller than that in the first space, so that defoaming treatment of the geopolymer is in a gradient state, and the defoaming treatment of the geopolymer is completed better.

In accordance with the above embodiments of the invention, these embodiments are not exhaustive of all details, nor are they limited to the only embodiments of the invention. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention and various modifications as are suited to the particular use contemplated. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A geopolymer processing device, characterized by comprising a pretreatment unit (100), an activation unit (200) and a negative pressure unit (300);

The pretreatment unit (100) is used for carrying out smashing, screening and drying integrated operation on raw materials and comprises a smashing roller (101), a first air heater (103) and a second air heater (109), steel balls are arranged in the smashing roller (101) and are circumferentially provided with sieve holes, two ends of the smashing roller are connected to a roller crusher body through connecting pipes (102), hot air is introduced into the smashing roller through the first air heater (103), and smashed powder enters a leakage hopper (106) and is subjected to secondary drying through the second air heater (109);

The activation unit (200) comprises an outer cylinder (201) and an inner cylinder (202), wherein stirring blades (209) driven by a first motor (203) are arranged in the inner cylinder (202), discharge ports (205) are circumferentially formed in the inner cylinder (202), and a conveying part (220) for stirring powder mixed with an activating agent to form a geopolymer is arranged at the bottom of the outer cylinder (201);

The negative pressure unit (300) comprises a box body (301), wherein the box body is divided into two independent spaces through a partition plate (302), a negative pressure pump (303) is respectively arranged at the tops of the two spaces to form gradient negative pressure, and a material feeding part (310) controls the material to enter the two spaces in stages through a sealing part (320) to complete gradient defoaming treatment.

2. The geopolymer processing device according to claim 1, wherein the crushing roller (101) of the pretreatment unit (100) is connected at one end to the first hot air blower (103) by a connecting pipe (102) and at the other end to the first hopper (105) by a first auger (104).

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

4. The geopolymer processing device according to claim 1, wherein the inner barrel (202) of the activation unit (200) is circumferentially provided with a support plate (206) mounted obliquely below the discharge opening (205), and a nozzle (207) for spraying the activator is provided above the support plate (206).

5. The geopolymer processing device according to claim 4, wherein the stirring blade (209) is mounted on the side of a mounting box (208), a second motor (210) is fixed in the mounting box (208), the output end of the second motor (210) is coaxially fixed with a screw (211), the screw (211) is in threaded connection with a sliding block (212), the sliding block (212) is slidably arranged in a guide rail (213), and the guide rail (213) is fixed with the mounting box (208);

The side of the sliding block (212) is fixedly provided with a driving pin (214), the driving pin (214) is arranged in a strip hole formed in a swinging rod (215) in a sliding mode, the swinging rod (215) is fixedly connected with a rotating pin (216), and the rotating pin (216) is rotatably arranged on the side wall of the mounting box (208).

6. The geopolymer processing apparatus according to claim 1, wherein the conveying section (220) comprises 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, wherein the sealing portion (320) comprises a sealing slide plate (321) and a telescopic cylinder (322) for achieving sealing of two spaces.

8. The geopolymer processing device according to claim 7, wherein the feeding portion (310) comprises a second bin (311), an electric telescopic rod (312) and a revolving door (313) are symmetrically arranged on the side face of the second bin (311), and the electric telescopic rod (312) can drive the revolving door (313) to open and close a bin outlet.

9. The geopolymer processing device of claim 1, wherein two separate spaces of the negative pressure unit (300) are in communication via a second set of seals (320), and the negative pressure value of the second space is lower than the first space.

10. The geopolymer processing device according to claim 9, wherein the bottom outlet of the tank (301) is provided with a third set of seals (320).