CN220176706U - Gypsum powder homogenizing and stirring system - Google Patents

Abstract

The utility model relates to the technical field of stirring equipment, and provides a gypsum powder homogenizing and stirring system, which comprises: the device comprises a feed hopper, a stirring device, a running-in device and a water supply device; the stirring device comprises a stirring cylinder, a stirring assembly and a first driving mechanism, wherein the stirring assembly is rotatably arranged in the stirring cylinder, and the driving end of the first driving mechanism is connected with the stirring assembly; one end of the stirring cylinder is communicated with the feeding hopper, and the other end of the stirring cylinder is communicated with the running-in device; the top of the stirring cylinder is provided with a plurality of spray heads, the water supply device is connected with the spray heads, and water with preset weight is introduced into the stirring cylinder according to the weight control of gypsum powder introduced into the stirring cylinder from the hopper. According to the stirring system disclosed by the utility model, the hopper and the plurality of spray heads respectively feed gypsum powder with preset weight and water with preset weight into the stirring cylinder, the stirring assembly is used for stirring the gypsum powder with preset weight, and the stirred materials are subjected to multistage running-in treatment and are matched with each other in stirring and running-in, so that the dihydrate gypsum with better uniformity and stability can be obtained.

Description

Gypsum powder homogenizing and stirring system

Technical Field

The utility model relates to the technical field of stirring equipment, in particular to a gypsum powder homogenizing and stirring system.

Background

Phosphogypsum is an industrial byproduct of phosphoric acid production by a wet method, and is solid waste with larger discharge in the production of phosphorus chemical enterprises. And (3) carrying out chemical treatment on phosphogypsum to remove harmful substances in the phosphogypsum, thereby obtaining purified gypsum powder. The gypsum powder and water are subjected to hydration reaction through stirring equipment to obtain dihydrate gypsum, and the dihydrate gypsum can be used for preparing gypsum building materials, so that the recycling utilization of phosphogypsum is realized.

In the prior art, the mixed gypsum powder and water are stirred by stirring equipment, the gypsum powder and the water are subjected to hydration reaction, and the proportion of the gypsum powder and the water and the hydration reaction time have influence on the homogeneity and stability of the dihydrate gypsum. In the prior art, in the feeding process, the proportion of gypsum powder and water cannot be accurately controlled, the uniformity of the dihydrate gypsum is improved by a multi-water adding method, but excessive free water easily causes poor stability of the dihydrate gypsum, and the dihydrate gypsum with better uniformity and stability is difficult to obtain.

Disclosure of Invention

The utility model provides a gypsum powder homogenizing and stirring system which is used for solving the problem that the prepared dihydrate gypsum is poor in homogeneity and stability due to the fact that the proportion of gypsum powder to water in the feeding process cannot be effectively matched in the existing stirring equipment.

The utility model provides a gypsum powder homogenizing and stirring system, which comprises: the device comprises a feed hopper, a stirring device, a running-in device and a water supply device;

the stirring device comprises a stirring cylinder, a stirring assembly and a first driving mechanism, wherein the stirring assembly is rotatably arranged in the stirring cylinder, and the driving end of the first driving mechanism is connected with the stirring assembly and is used for driving the stirring assembly to rotate;

one end of the stirring cylinder is communicated with the feeding hopper, and the feeding hopper is used for introducing gypsum powder into the stirring cylinder;

the top end of the stirring cylinder is provided with a plurality of spray heads, the water supply device is connected with the spray heads, and the water supply device is used for controlling the water with preset weight to be introduced into the stirring cylinder according to the weight of the gypsum powder introduced into the stirring cylinder by the hopper;

the stirring device is used for stirring the gypsum powder and water to obtain dihydrate gypsum;

the running-in device is communicated with the other end of the stirring cylinder, the running-in device comprises at least two running-in units, two adjacent running-in units are communicated, and the running-in device is used for carrying out multistage running-in treatment on materials output by the stirring cylinder.

According to the gypsum powder homogenizing and stirring system provided by the utility model, the gypsum powder homogenizing and stirring system further comprises a weighing device and a controller, and the weighing device and the water supply device are both connected with the controller;

the weighing device is arranged on the outer wall surface of the feeding hopper, and the controller controls the feeding hopper to switch between a feeding state and a discharging state based on the weight value of the weighing device;

and under the condition that the hopper is in a discharging state, the controller controls the water supply device to supply water to the stirring cylinder.

According to the gypsum powder homogenizing and stirring system provided by the utility model, the stirring device further comprises a crushing assembly;

the crushing assembly comprises a crushing blade, the crushing blade is arranged in the stirring barrel, the crushing blade is positioned on the outer side of the profile surface of the stirring assembly, and the crushing blade is used for crushing materials.

According to the gypsum powder homogenizing and stirring system provided by the utility model, the crushing assembly further comprises a bearing disc and a second driving mechanism;

the bearing disc is annular and is rotatably arranged in the stirring cylinder along the circumferential direction of the stirring cylinder; the bearing plate is provided with a plurality of crushing blades, and the crushing blades are sequentially arranged along the circumferential direction of the bearing plate;

the output end of the second driving mechanism is connected with the bearing disc so as to drive the bearing disc to rotate relative to the stirring barrel.

According to the gypsum powder homogenizing and stirring system provided by the utility model, the running-in unit comprises a shell, a fixed grinding disc, a rotary grinding disc and a third driving mechanism, wherein a pushing cavity and a running-in cavity which are mutually communicated are formed in the shell, the fixed grinding disc and the rotary grinding disc are both arranged in the running-in cavity, and a running-in channel is formed between the fixed grinding disc and the rotary grinding disc;

the driving end of the third driving mechanism is connected with the rotating millstone, and the third driving mechanism is used for pushing materials in the pushing cavity to the running-in channel and driving the rotating millstone to rotate relative to the fixed millstone so as to carry out running-in treatment on the materials.

According to the gypsum powder homogenizing and stirring system provided by the utility model, under the condition that the number of the running-in units is multiple, the running-in units are sequentially distributed along the vertical direction, and in two adjacent running-in units, the running-in cavity of one running-in unit is communicated with the pushing cavity of the other running-in unit.

According to the gypsum powder homogenizing and stirring system provided by the utility model, the gypsum powder homogenizing and stirring system further comprises a cleaning device;

the cleaning device comprises an air supply pipeline, one end of the air supply pipeline is communicated with the running-in cavity, the other end of the air supply pipeline is connected with an air source, and the air supply pipeline is used for introducing air into the running-in cavity so as to wash out residual materials in the running-in cavity.

According to the gypsum powder homogenizing and stirring system provided by the utility model, the gypsum powder homogenizing and stirring system further comprises a dust removing device, and the dust removing device is communicated with the stirring cylinder.

According to the gypsum powder homogenizing and stirring system provided by the utility model, the stirring assembly comprises the stirring part, the stirring part comprises the stirring shaft and the stirring blades, and the stirring blades are spirally arranged on the stirring shaft.

According to the gypsum powder homogenizing and stirring system provided by the utility model, the stirring barrel comprises a first barrel body and a second barrel body which are detachably connected, and the stirring assembly further comprises a connecting part detachably connected with the stirring part;

the stirring part is positioned in the second cylinder body under the condition that the first cylinder body and the second cylinder body are in a connected state;

when the first cylinder and the second cylinder are in a separated state, the stirring part is exposed to the lower side of the first cylinder.

According to the gypsum powder homogenizing and stirring system provided by the utility model, in the single feeding process, the gypsum powder with preset weight is introduced into the stirring cylinder through the feeding hopper, the water with preset weight is introduced into the stirring cylinder through the plurality of spray heads, the stirring assembly is driven by the first driving mechanism to sufficiently stir the gypsum powder and the water, the stirred materials are further subjected to multistage running-in treatment, the stirring and the running-in are matched, so that homogenized semi-hydrated gypsum is obtained, hydration reaction is further carried out, and the dihydrate gypsum with better uniformity and stability can be obtained.

Drawings

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

FIG. 1 is a schematic diagram of a gypsum powder homogenizing and stirring system according to the present utility model;

FIG. 2 is an oblique view of the gypsum powder homogenizing and stirring system provided by the utility model;

FIG. 3 is a cross-sectional view of the gypsum powder homogenizing and stirring system provided by the present utility model;

FIG. 4 is a second schematic diagram of a gypsum powder homogenizing and stirring system according to the present utility model;

FIG. 5 is a flow chart of a method for preparing dihydrate gypsum using the gypsum powder homogenizing and stirring system provided by the utility model;

reference numerals: 1: a hopper; 2: a stirring device; 21: a stirring cylinder; 211: a first cylinder; 212: a second cylinder; 213: a cover plate; 214: a material guiding pipe; 22: a stirring assembly; 23: a first driving mechanism; 231: a first motor; 232: a driving pulley; 233: a driven pulley; 24: a second driving mechanism; 3: discharging a hopper; 4: a running-in unit; 41: a pushing cavity; 42: a running-in cavity; 43: fixing a grinding disc; 44: rotating the millstone; 45: and a third driving mechanism.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

The gypsum powder homogenizing and stirring system of the present utility model is described below with reference to fig. 1 to 4.

As shown in fig. 1, 2 and 3, the gypsum powder homogenizing and stirring system provided by the utility model comprises: a hopper 1, a stirring device 2 and a water supply device; the stirring device 2 comprises a stirring cylinder 21, a stirring assembly 22 and a first driving mechanism 23, wherein the stirring assembly 22 is rotatably arranged in the stirring cylinder 21, and the driving end of the first driving mechanism 23 is connected with the stirring assembly 22 and is used for driving the stirring assembly 22 to rotate; one end of the stirring cylinder 21 is communicated with the feeding hopper 1, and the feeding hopper 1 is used for introducing gypsum powder into the stirring cylinder 21; the top end of the stirring cylinder 21 is provided with a plurality of spray heads, a water supply device is connected with the spray heads, and the water supply device is used for controlling the water with preset weight to be introduced into the stirring cylinder according to the weight of gypsum powder introduced into the stirring cylinder from a feed hopper; the stirring device 2 is used for stirring gypsum powder and water, the running-in device is communicated with the other end of the stirring cylinder 21 and comprises at least two running-in units 4, two adjacent running-in units 4 are communicated, and the running-in device is used for carrying out multistage running-in treatment on materials output by the stirring cylinder 21.

Specifically, the gypsum powder homogenizing and stirring system comprises a feeding hopper 1, a stirring cylinder 21 and a discharging hopper 3, wherein the discharging hopper 3, the stirring cylinder 21 and the feeding hopper 1 are sequentially arranged along the vertical direction, and the feeding hopper 1, the stirring cylinder 21 and the discharging hopper 3 are mutually communicated. The hopper 1 can be formed by splicing a cylindrical shell and a conical shell, a discharge hole is formed in the bottom end of the hopper 1, a guide channel is arranged on the top end of the stirring cylinder 21 in a protruding mode, and the guide channel is arranged in a centering mode with the discharge hole. For convenience of description, the gypsum powder homogenizing and stirring system is simply referred to as a stirring system.

The bottom end of the hopper 1 is provided with a first sealing plate which is detachably arranged at the discharge opening, the first sealing plate is positioned at a first position, the first sealing plate can seal the discharge opening, and the hopper 1 is in a feeding state at the moment; the first sealing plate is positioned at the second position, the first sealing plate is separated from the discharge opening, the discharge opening is communicated with the material guide channel, and the feeding hopper 1 is positioned in a discharge state. It will be appreciated that the feed opening of the hopper 1 is provided with a feeding device for feeding gypsum powder to the hopper 1, and that a weighing sensor may be mounted on the hopper 1 for weighing the gypsum powder in the hopper 1. The first sealing plate is in the first position, the feeding device conveys gypsum powder to the feeding hopper 1, the gypsum powder in the feeding hopper 1 reaches the preset weight, and at the moment, the feeding device stops conveying the gypsum powder. The first sealing plate is positioned at the second position, the discharge opening is communicated with the stirring cylinder 21, and gypsum powder with preset weight falls into the stirring cylinder 21 along the material guide channel.

The mixing drum 21 comprises a drum body and a cover plate, one end of the drum body is arranged in an open mode, a discharge hole is formed in the other end of the drum body, and the discharge hole is communicated with the discharge hopper 3. The discharge hopper 3 may be formed by splicing a cylindrical housing and a conical housing. A material guide pipe 214 can be arranged at the discharge hole of the cylinder body, and the bottom surface of the material guide pipe 214 is not higher than the top surface of the discharge hopper 3. The material in the mixing drum 21 flows into the discharge hopper 3 along the material guiding pipe 214, so that the material can be effectively prevented from splashing to the external environment in the flowing process. The outlet end of the material guide pipe 214 is provided with a second sealing plate, the second sealing plate is detachably arranged at the outlet end and is positioned at a third position, the second sealing plate can seal the material guide pipe 214, and the stirring device 2 is in a stirring state; the second sealing plate is positioned at the fourth position, the second sealing plate is separated from the outlet end, the material guide pipe 214 is communicated with the material discharge hopper 3, and the stirring device 2 is in a material discharge state.

The stirring assembly 22 comprises a stirring part, the stirring part comprises a stirring shaft and stirring blades, the number of the stirring blades is set according to actual requirements, the stirring blades are arranged at intervals along the axis direction of the stirring shaft, and the stirring blades are spirally arranged on the stirring shaft. The plurality of stirring blades that spiral was laid is favorable to carrying out abundant stirring to the material.

The first drive mechanism 23 includes a motor and a transmission assembly, defining the motor as a first motor 231, the first motor 231 being coupled to the stirring assembly 22 by the transmission assembly. The drive assembly may be a belt drive, chain drive, or gear drive, for example, the drive assembly is a belt drive, and the drive assembly includes a drive pulley 232, a driven pulley 233, and a belt. The driving shaft of the first motor 231 is connected with the driving pulley 232, the driven pulley 233 is connected with one end of the stirring shaft, and the belt is sleeved on the driving pulley 232 and the driven pulley 233. The first motor 231 drives the driving pulley 232 to rotate, and drives the driven pulley 233 and the stirring assembly 22 to synchronously rotate. The first motor 231 can rotate in a forward and reverse direction, and the rotation parameters of the first motor 231 can be set according to actual requirements, for example, the first motor 231 drives the stirring assembly 22 to rotate in a clockwise direction for a target rotation speed, or the first motor 231 drives the stirring assembly 22 to rotate in a counterclockwise direction for a target rotation speed.

Alternatively, a mounting seat for fixing the first motor 231 may be connected to the cover plate 213, for example, the mounting seat includes two side plates disposed opposite to each other, and a bottom plate for connecting the two side plates, an edge of the cover plate 213 is extended to an outside to form a connection portion, one side plate is connected to the connection portion, and a base of the first motor 231 is connected to the other side plate. The mounting manner of the first motor 231 is not particularly limited.

A plurality of spray heads are mounted on the cover plate 213 of the stirring drum 21, and the spray heads are arranged on the cover plate 213 at intervals. The water supply device comprises a plurality of liquid supply pipelines, the liquid supply pipelines are connected with the spray heads in a one-to-one correspondence manner, one end of each liquid supply pipeline is connected with a water source, and the other end of each liquid supply pipeline is connected with the spray heads. The liquid supply pipeline can be provided with a control valve, and the control valve is used for controlling the on-off of the liquid supply pipeline, and the liquid supply pipeline is used for conveying water to the stirring drum 21 in a conducting state. The spray heads can spray water drops from multiple directions into the stirring cylinder 21, and in a single feeding process, the water with preset weight is introduced into the stirring cylinder 21 by controlling the flow rate and the liquid supply time period, the water with preset weight is used for fully crystallizing gypsum powder, the water with preset weight accounts for 8-22% of the weight of the reactant, and 0.1-0.5% of retarder or 0.1-0.5% of waterproofing agent can be added into the reactant.

The gypsum powder and water are sufficiently mixed under the agitation of the agitation member 22, and the crystal water coats the hemihydrate gypsum, free water which is not combined with the hemihydrate gypsum and a small amount of dihydrate gypsum are inevitably present in the process, and the material output from the agitation cylinder 21 includes the hemihydrate gypsum and a small amount of dihydrate gypsum and free water. The running-in device is used for carrying out multistage running-in treatment on the material output by the stirring cylinder 21 so that the semi-hydrated gypsum which is not combined with water can be wrapped by the crystallization water. The stirring time is 2-5 min, and the running-in time is 2-5 min.

The number of running-in units 4 is set according to actual demands, the number of the running-in units 4 can be one, two or more, and under the condition that the number of the running-in units 4 is a plurality of, the running-in units 4 are sequentially distributed along the vertical direction, and two adjacent running-in units 4 are communicated. The running-in unit 4 has a push chamber 41 and a running-in chamber 42 which communicate with each other.

In the following, two running-in units 4 are described as an example, and two running-in units 4 are defined as a first running-in unit and a second running-in unit, respectively. The push cavity 41 of the first running-in unit is communicated with the outlet end of the discharge hopper 3, and the running-in cavity 42 of the first running-in unit is communicated with the push cavity 41 of the second running-in unit. The material falling into the pushing cavity 41 of the first running-in unit 4 is pushed to the running-in channel, and the hemihydrate gypsum in the material and the free water are fully contacted under the action of friction force. After that, the material falls into the pushing cavity 41 of the second running-in unit 4 from the running-in cavity 42 of the first running-in unit 4, the material in the pushing cavity 41 of the second running-in unit 4 is pushed to the running-in channel, and the semi-hydrated gypsum and free water which are not combined in the material are in further full contact under the action of friction force. After the material is ground twice, semi-hydrated gypsum in the material is fully contacted with free water to generate crystal form transformation, so that the homogeneity of the semi-hydrated gypsum is further improved. It can be appreciated that the multiple running-in units 4 can perform multistage running-in treatment on the materials, so that the homogeneity of the semi-hydrated gypsum is effectively improved.

The semi-hydrated gypsum obtained after running-in treatment needs to be further treated. The homogenized semi-hydrated gypsum after running-in treatment is conveyed into a material making machine, and at the moment, water with the target weight is added into the material making machine, and the water with the target weight is used for enabling the semi-hydrated gypsum and the water to fully generate hydration reaction, so that the semi-hydrated gypsum is converted into the dihydrate gypsum with proper strength and can be suitable for industrial application. The target weight of water accounts for 27-33% of the weight of the reactants.

After stirring treatment, grinding treatment is carried out on the gypsum powder and water, and the semi-hydrated gypsum and free water in the stirred materials are fully contacted under the action of friction force, so that semi-hydrated gypsum with better homogeneity is obtained, and hydration reaction is carried out on the semi-hydrated gypsum with better homogeneity and water with target weight, so that the dihydrate gypsum with better homogeneity and stability is obtained.

The operation of the stirring system will be described below. The hopper 1 is in a feeding state, the feeding device conveys gypsum powder to the hopper 1, after the gypsum powder in the hopper 1 reaches a preset weight, the hopper 1 is switched to a discharging state, and the gypsum powder with the preset weight falls into the stirring barrel 21 along the material guiding channel. Meanwhile, the liquid supply pipeline is communicated, a plurality of spray heads spray water drops towards the inside of the stirring cylinder 21, and water with preset weight is introduced into the stirring cylinder 21 by controlling the liquid supply time and the liquid supply flow. In the single feeding process, a preset weight of gypsum powder and a preset weight of water are introduced into the stirring cylinder 21, and a mixture of the gypsum powder and the water mixed together is defined as a material. In the process of feeding and after the feeding is completed, the first motor 231 drives the stirring assembly 22 to rotate so as to sufficiently stir the materials, and after the stirring target time length, the semi-hydrated gypsum with better homogeneity can be obtained. The prepared hemihydrate gypsum falls into the discharge hopper 3 along the guide pipe 214, and is further conveyed to the running-in device. The running-in device carries out multistage running-in treatment on the materials, so that semi-hydrated gypsum in the materials output by the stirring cylinder is fully contacted with free water.

It is understood that the hydration reaction of the gypsum powder and water, the ratio of the gypsum powder to water and the duration of the hydration reaction have an effect on the homogeneity and stability of the dihydrate gypsum. In the traditional stirring process, the homogeneity of the dihydrate gypsum is improved by a multi-water adding method, but the stability of the dihydrate gypsum is poor due to excessive free water. In the utility model, in the feeding process, a plurality of spray heads spray water drops towards the inside of the stirring cylinder 21, the gypsum powder with preset weight and the water with preset weight are fully mixed within a target time period, homogenized semi-hydrated gypsum is obtained under the stirring of the stirring assembly 22 and the running-in of the running-in device, hydration reaction further occurs, and the dihydrate gypsum with better homogeneity and stability can be obtained.

In the embodiment of the utility model, in the single feeding process, the feeding hopper 1 is filled with gypsum powder with preset weight into the stirring cylinder 21, the plurality of spray heads are filled with water with preset weight into the stirring cylinder 21, the stirring assembly 22 is driven by the first driving mechanism 23 to sufficiently stir the gypsum powder and the water, the stirred materials are further subjected to multistage running-in treatment, the stirring and the running-in are matched to obtain homogenized semi-hydrated gypsum, hydration reaction is further carried out, and the dihydrate gypsum with better uniformity and stability can be obtained.

In an alternative embodiment, the gypsum powder homogenizing and stirring system further comprises a weighing device and a controller, wherein the weighing device and the water supply device are connected with the controller; the weighing device is arranged on the outer wall surface of the hopper 1, and the controller controls the hopper 1 to switch between a feeding state and a discharging state based on the weight value of the weighing device; when the hopper 1 is in the discharge state, the controller controls the water supply device to supply water to the stirring cylinder 21.

Specifically, the weighing device comprises a weighing sensor, the weighing sensor is arranged on the outer wall surface of the feeding hopper 1, an opening and closing assembly is arranged at the discharge opening of the feeding hopper 1 and is electrically connected with the controller, the opening and closing assembly comprises a control valve and a first sealing plate, and the control valve can control the first sealing plate to switch between a first position and a second position. The first sealing plate is positioned at a first position, the first sealing plate can seal the discharge opening, and the feeding hopper 1 is in a feeding state; the first sealing plate is positioned at the second position, the first sealing plate is separated from the discharge opening, the discharge opening is communicated with the material guide channel, and the feeding hopper 1 is positioned in a discharge state.

The weighing sensor and the liquid supply pipelines are connected with the controller. The feeding device conveys gypsum powder into the feeding hopper 1, the weighing sensor detects that the gypsum powder in the feeding hopper 1 reaches the preset weight, the feeding device stops feeding, the controller controls the first sealing plate to be switched from the first position to the second position based on the weight signal of the weighing sensor, the feeding hopper 1 is switched to a discharging state, and the gypsum powder with the preset weight falls into the stirring cylinder 21. Meanwhile, the controller controls the liquid supply pipelines to be in a conducting state, water with preset weight is introduced into the stirring cylinder 21 through the spray heads, and the gypsum powder with preset weight and the water with preset weight are fully contacted under the stirring of the stirring assembly 22.

In the embodiment of the utility model, the weight of the gypsum powder in each feeding process is accurately controlled by arranging the weighing device, and the controller controls the water supply device to supply water based on the weight signal of the weighing device, so that the proportioning precision of the gypsum powder and water in the feeding process is effectively ensured.

In an alternative embodiment, the stirring device 2 further comprises a crushing assembly; the crushing assembly comprises a crushing blade which is arranged in the stirring cylinder 21, and the crushing blade is positioned on the outer side of the profile surface of the stirring assembly 22 and is used for crushing materials.

Specifically, the crushing assembly includes crushing blades, which may be mounted on the inner wall surface of the stirring cylinder 21, and the number of the crushing blades may be one or more, and in the case that the number of the crushing blades is plural, the plurality of crushing blades are disposed on the inner wall surface of the stirring cylinder 21 at intervals around the central axis line of the stirring cylinder 21. It can be understood that a gap is formed between the crushing blade and the stirring blade, so that the crushing blade and the stirring blade are prevented from collision in the stirring process.

The mixing component 22 stirs the mixed material after the semi-hydrated gypsum and water are mixed, and the large-size bulk particles inevitably exist in the material, and the crushing blade cuts the bulk particles and crushes the bulk particles into fine particles, so that the homogeneity of the semi-hydrated gypsum is further improved.

In an alternative embodiment, the crushing assembly further comprises a carrier disc and a second drive mechanism 24; the bearing disc is annular and is rotatably arranged in the stirring cylinder 21 along the circumferential direction of the stirring cylinder 21; the bearing plate is provided with a plurality of crushing blades, and the crushing blades are sequentially arranged along the circumferential direction of the bearing plate; the output end of the second driving mechanism 24 is connected with the bearing disc to drive the bearing disc to rotate relative to the stirring drum 21.

Specifically, the bearing disc may be annular, a first space is provided between an inner wall surface of the bearing disc and the stirring blade, a second space is provided between an outer wall surface of the bearing disc and an inner wall surface of the stirring drum 21, and the plurality of crushing blades are circumferentially arranged on the bearing disc at intervals. The bearing plate and the stirring shaft are coaxially arranged, a plurality of crushing blades can be arranged on the same side of the bearing plate, and the crushing blades can be arranged on two opposite sides of the bearing plate in a staggered manner. The second driving mechanism 24 includes a second motor and a second transmission assembly, the second motor is connected with the bearing disc through the second transmission assembly, the second motor drives the bearing disc to rotate, the bearing disc drives the crushing blades to rotate, and the second motor can rotate forward and reverse.

Further, the rotation direction of the crushing blade is opposite to the rotation direction of the stirring blade, i.e., the first motor 231 drives the stirring blade to rotate in a clockwise direction, and the second motor drives the crushing blade to rotate in a counterclockwise direction. The crushing blade is opposite with stirring vane's rotation direction, and the crushing blade cuts the bulk particulate matter along the opposite direction of the whirl direction with the material, effectively promotes crushing blade to bulk particulate's impact energy, and then is favorable to promoting crushing efficiency and crushing effect.

As shown in fig. 1, 2 and 3, in an alternative embodiment, the running-in unit 4 includes a housing, a fixed grinding disc 43, a rotating grinding disc 44 and a third driving mechanism 45, wherein a pushing cavity 41 and a running-in cavity 42 which are mutually communicated are configured in the housing, the pushing cavity 41 is communicated with the stirring drum 21, the fixed grinding disc 43 and the rotating grinding disc 44 are both arranged in the running-in cavity 42, and a running-in channel is formed between the fixed grinding disc 43 and the rotating grinding disc 44; the driving end of the third driving mechanism 45 is connected with the rotating millstone 44, and the third driving mechanism 45 is used for pushing the material in the pushing cavity 41 to the running-in channel and driving the rotating millstone 44 to rotate relative to the fixed millstone 43 so as to carry out running-in treatment on the material.

Specifically, the casing is formed by first casing and second casing combination, and first casing sets up along the horizontal direction, and first casing can be cylindric, and the second casing sets up along vertical direction, and the second casing can be fan-shaped. The partial section of the first housing is embedded in the second housing, a push cavity 41 is formed inside the first housing, a running-in cavity 42 is formed inside the second housing, and the push cavity 41 and the running-in cavity 42 are communicated with each other. The fixed grinding disc 43 and the rotary grinding disc 44 are both positioned in the running-in cavity 42, the fixed grinding disc 43 and the rotary grinding disc 44 are both arranged in the vertical direction, and a running-in channel is formed between opposite surfaces of the fixed grinding disc 43 and the rotary grinding disc 44. The outlet end of the discharge hopper 3 extends into the first housing, whereby the discharge hopper 3 communicates with the push cavity 41. The bottom of the second shell is provided with a discharge hole.

One end of the first shell embedded in the second shell is connected with a fixed grinding disc 43, and the central axis of the fixed grinding disc 43 is coaxial with the central axis of the first shell. The third driving mechanism 45 comprises a third motor and a propulsion assembly, wherein the propulsion assembly comprises a rotating shaft and propulsion blades, and the propulsion blades are spirally arranged on the rotating shaft. The axis of the rotation shaft is coaxial with the central axis of the first shell, one end of the rotation shaft extending into the running-in cavity 42 is connected with the rotating millstone 44, the other end of the rotation shaft is in power coupling connection with a third motor, and the third motor can be fixed at the other end of the first shell.

The material that churn 21 output falls into hopper 3, further falls into propelling movement chamber 41 by hopper 3, third motor drive axis of rotation and propulsion blade rotate, with the material by propelling movement chamber 41 propelling movement to running-in passageway department, the third motor drive rotates mill 44 and rotates relative fixed mill 43, running-in is carried out to the material of running-in passageway department, under the frictional force effect, semi-hydrated gypsum and the abundant contact of free water in the material, the material after the running-in falls into running-in chamber 42, further can be discharged by the bin outlet of second casing.

In the embodiment of the utility model, after the material falls into the pushing cavity 41, the material is further pushed to the running-in channel, the rotary grinding disc 44 rotates relative to the fixed grinding disc 43, and under the action of friction force, the semi-hydrated gypsum in the material is fully contacted with free water, so that homogenized semi-hydrated gypsum is obtained, the whole structure is compact, and the growth of the post-hydrated gypsum crystal is facilitated.

In an alternative embodiment, the stirring system further comprises a cleaning device; the cleaning device comprises an air supply pipeline, one end of the air supply pipeline is communicated with the running-in cavity 42, the other end of the air supply pipeline is connected with an air source, and the air supply pipeline is used for introducing air into the running-in cavity 42 so as to wash out residual materials in the running-in cavity 42.

Specifically, one end of the air supply pipeline extends into the running-in cavity 42, the other end of the air supply pipeline is connected with an air source, and the air supply pipeline is used for introducing high-pressure air into the running-in cavity 42. After running in, the semi-hydrated gypsum is discharged from the running-in cavity 42, and the phenomenon that a small amount of semi-hydrated gypsum adheres to the cavity wall surface of the running-in cavity 42, the surface of the rotating grinding disc 44 and the surface of the fixed grinding disc 43 occurs. The air supply line introduces high pressure air into the running-in chamber 42, which flushes the adhered hemihydrate gypsum, and the flushed hemihydrate gypsum is further discharged from the running-in chamber 42.

The high-pressure gas flushes the adhered semi-hydrated gypsum, so that the problem that residual materials are retained in the running-in cavity 42 is effectively solved, the flushed semi-hydrated gypsum can be recycled, the recycled semi-hydrated gypsum is used as a raw material for next mixing, and the utilization rate of the raw material is improved.

In an alternative embodiment, the stirring system further comprises a dust removal device in communication with the stirring drum 21 for removing dust.

Specifically, the dust removing device may be a bag-type dust remover, the bag-type dust remover includes a dust removing pipe, a dust remover and an exhaust pipe, the dust removing pipe and the exhaust pipe are both communicated with the dust remover, one end of the dust removing pipe is communicated with the cover plate 213 of the stirring drum 21, and the other end of the dust removing pipe is communicated with the dust remover. In the process of introducing gypsum powder into the stirring cylinder 21, dust floating above the stirring cylinder 21 flows into a dust remover through a dust removing pipeline, and clean gas after dust removal treatment is discharged into the atmosphere through an exhaust pipeline.

Dust collector adsorbs the dust that floats in the material feeding process, avoids the dust to escape to the external environment in, causes the pollution to operational environment, can avoid the dust to influence the operating personnel simultaneously.

In an alternative embodiment, as shown in fig. 3, the mixing drum 21 includes a first drum body 211 and a second drum body 212 that are detachably connected, and the mixing assembly 22 further includes a connection portion detachably connected to the mixing portion; when the first cylinder 211 and the second cylinder 212 are in a connected state, the stirring section is located in the second cylinder 212; when the first cylinder 211 and the second cylinder 212 are in a separated state, the stirring portion is exposed to the lower side of the first cylinder 211.

Specifically, the stirring cylinder 21 includes a cylinder body and a cover plate 213, the cylinder body is formed by combining a first cylinder body 211 and a second cylinder body 212, the first cylinder body 211 is located above, the second cylinder body 212 is located below, a first flange connection portion is formed on the bottom surface of the first cylinder body 211, a second flange connection portion is formed on the top surface of the second cylinder body 212, and the first flange connection portion and the second flange connection portion are connected through a fastener, so that detachable connection of the first cylinder body 211 and the second cylinder body 212 is achieved. A sealing gasket can be arranged between the opposite surfaces of the first flange connection part and the second flange connection part, so that the sealing performance of the stirring cylinder 21 is ensured.

The cover plate 213 is arranged at the opening of the first cylinder 211 in a covering manner, the cover plate 213 is detachably connected with the first cylinder 211, and a plurality of spray heads are arranged on the cover plate 213 at intervals. The cover plate 213 is also provided with a material guiding channel along which gypsum powder in the hopper 1 falls into the stirring cylinder 21.

The first cylinder 211 and the second cylinder 212 are in a connected state, and the stirring shaft and the stirring blade are positioned in the second cylinder 212, and the stirring shaft and the stirring blade are rotated, so that the hemihydrate gypsum and the water are sufficiently mixed.

The bottom of the stirring cylinder 21 is easy to have material residue, and the residue material can influence the next preparation of the dihydrate gypsum. The barrel adopts split type structure, when needs clearance residual material, dismantles second barrel 212, is convenient for clear up residual material, effectively reduces the clearance duration.

The stirring assembly 22 includes a stirring portion and a connecting portion, and one end of the stirring shaft is connected to the driven wheel through the connecting portion. When the stirring portion is worn, the second cylinder 212 is detached, so that the stirring portion can be replaced conveniently, and convenience in maintenance is facilitated.

As shown in fig. 3 and 4, further, a material guiding pipe 214 is disposed at the bottom of the second cylinder 212, the bottom surface of the material guiding pipe 214 is not higher than the top surface of the material discharging hopper 3, a spiral propulsion assembly is disposed in the material guiding pipe 214, the spiral propulsion assembly includes a rotation shaft and spiral blades disposed on the rotation shaft, and the rotation shaft can be connected with the stirring shaft. The materials fall into the discharge hopper 3 under the spiral motion track, so that the caking phenomenon can be effectively avoided. The installation mode of the material guiding pipe 214 can be set according to the use requirement, and the material guiding pipe 214 can be arranged vertically or obliquely.

In the embodiment of the utility model, the first cylinder 211 and the second cylinder 212 are detachably connected, so that the residual materials in the stirring cylinder 21 are conveniently cleaned, the cleaning time is effectively reduced, the maintenance convenience of the stirring assembly 22 is facilitated, and the efficient operation of the stirring system is effectively ensured.

FIG. 5 is a flow chart of a method of preparing dihydrate gypsum using a gypsum powder homogenizing mixer system, the method of preparing dihydrate gypsum comprising:

step 101: acquiring the weight of gypsum powder introduced into the stirring cylinder 21, and controlling a water supply device to introduce water with preset weight into the stirring cylinder 21 according to the weight of the gypsum powder introduced into the stirring cylinder 21;

step 102: controlling the stirring device 2 to stir the gypsum powder and the water;

step 103: the running-in device is controlled to carry out multistage running-in treatment on the material output by the stirring cylinder 21.

Specifically, the gypsum powder homogenizing and stirring system is described above, and the preparation process is explained below. A weighing device may be installed on the outer wall surface of the hopper 1 to obtain the weight of the gypsum powder. The hopper 1 is in a feeding state, the feeding device conveys gypsum powder to the hopper 1, after the gypsum powder in the hopper 1 reaches a preset weight, the hopper 1 is switched to a discharging state, and the gypsum powder with the preset weight falls into the stirring barrel 21 along the material guiding channel. Meanwhile, the liquid supply pipeline is communicated, a plurality of spray heads spray water drops towards the inside of the stirring cylinder 21, and water with preset weight is introduced into the stirring cylinder 21 by controlling the liquid supply time and the liquid supply flow. In the single feeding process, a preset weight of gypsum powder and a preset weight of water are introduced into the stirring cylinder 21.

In the process of feeding and after the completion of feeding, the first motor 231 drives the stirring assembly 22 to rotate so as to fully stir the materials, and after the stirring target time length, the semi-hydrated gypsum with better homogeneity and stability can be obtained. The stirred materials fall into the discharge hopper 3 along the material guide pipe 214, the materials output by the stirring cylinder 21 comprise semi-hydrated gypsum, a small amount of dihydrate gypsum and free water, and the materials further fall into the running-in device from the discharge hopper 3. The running-in device carries out multistage running-in treatment on the material, so that the semi-hydrated gypsum in the material is fully contacted with free water to obtain homogenized semi-hydrated gypsum.

And conveying the homogenized semi-hydrated gypsum after running-in treatment into a material making machine, and adding water with target weight into the material making machine at the moment, wherein the water with target weight and the semi-hydrated gypsum with better homogeneity fully generate hydration reaction to obtain the semi-hydrated gypsum with better homogeneity and stability.

By adopting the gypsum powder homogenizing and stirring system for preparing the dihydrate gypsum, in the single feeding process, the feeding hopper 1 is filled with gypsum powder with preset weight into the stirring cylinder 21, a plurality of spray heads are filled with water with preset weight into the stirring cylinder 21, the stirring assembly 22 is driven by the first driving mechanism 23 to fully stir the gypsum powder and the water, the stirred materials are further subjected to multistage running-in treatment, the stirring and the running-in are matched, homogenized hemihydrate gypsum is obtained, the hemihydrate gypsum and the water are subjected to hydration reaction, and the dihydrate gypsum with better uniformity and stability can be obtained.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims (10)

1. A gypsum powder homogenizing and stirring system, comprising: the device comprises a feed hopper, a stirring device, a running-in device and a water supply device;

the stirring device comprises a stirring cylinder, a stirring assembly and a first driving mechanism, wherein the stirring assembly is rotatably arranged in the stirring cylinder, and the driving end of the first driving mechanism is connected with the stirring assembly and is used for driving the stirring assembly to rotate;

one end of the stirring cylinder is communicated with the feeding hopper, and the feeding hopper is used for introducing gypsum powder into the stirring cylinder;

the top end of the stirring cylinder is provided with a plurality of spray heads, the water supply device is connected with the spray heads, and the water supply device is used for controlling the water with preset weight to be introduced into the stirring cylinder according to the weight of the gypsum powder introduced into the stirring cylinder by the hopper;

the stirring device is used for stirring the gypsum powder and water;

the running-in device is communicated with the other end of the stirring cylinder, the running-in device comprises at least two running-in units, two adjacent running-in units are communicated, and the running-in device is used for carrying out multistage running-in treatment on materials output by the stirring cylinder.

2. The gypsum powder homogenizing and stirring system of claim 1, further comprising a weighing device and a controller, wherein the weighing device and the water supply device are both connected to the controller;

the weighing device is arranged on the outer wall surface of the feeding hopper, and the controller controls the feeding hopper to switch between a feeding state and a discharging state based on the weight value of the weighing device;

and under the condition that the hopper is in a discharging state, the controller controls the water supply device to supply water to the stirring cylinder.

3. The gypsum powder homogenizing and stirring system of claim 1, wherein the stirring device further comprises a crushing assembly;

the crushing assembly comprises a crushing blade, the crushing blade is arranged in the stirring barrel, the crushing blade is positioned on the outer side of the profile surface of the stirring assembly, and the crushing blade is used for crushing materials.

4. A gypsum powder homogenizing and stirring system as set forth in claim 3 wherein the crushing assembly further comprises a carrier tray and a second drive mechanism;

the bearing disc is annular and is rotatably arranged in the stirring cylinder along the circumferential direction of the stirring cylinder; the bearing plate is provided with a plurality of crushing blades, and the crushing blades are sequentially arranged along the circumferential direction of the bearing plate;

the output end of the second driving mechanism is connected with the bearing disc so as to drive the bearing disc to rotate relative to the stirring barrel.

5. The gypsum powder homogenizing and stirring system of claim 1, wherein the running-in unit comprises a housing, a fixed grinding disc, a rotating grinding disc and a third driving mechanism, wherein a pushing cavity and a running-in cavity which are communicated with each other are formed in the housing, the fixed grinding disc and the rotating grinding disc are both arranged in the running-in cavity, and a running-in channel is formed between the fixed grinding disc and the rotating grinding disc;

the driving end of the third driving mechanism is connected with the rotating millstone, and the third driving mechanism is used for pushing materials in the pushing cavity to the running-in channel and driving the rotating millstone to rotate relative to the fixed millstone so as to carry out running-in treatment on the materials.

6. The gypsum powder homogenizing and stirring system of claim 5, wherein in the case where the number of the running-in units is plural, the plural running-in units are sequentially arranged in a vertical direction, and the running-in chamber of one of the adjacent two running-in units is communicated with the pushing chamber of the other running-in unit.

7. The gypsum powder homogenizing and stirring system of claim 5, further comprising a cleaning device;

the cleaning device comprises an air supply pipeline, one end of the air supply pipeline is communicated with the running-in cavity, the other end of the air supply pipeline is connected with an air source, and the air supply pipeline is used for introducing air into the running-in cavity so as to wash out residual materials in the running-in cavity.

8. The gypsum powder homogenizing and stirring system of claim 1, further comprising a dust removal device in communication with the mixing drum.

9. The gypsum powder homogenizing and stirring system of any one of claims 1 to 8, wherein the stirring assembly comprises a stirring section comprising a stirring shaft and stirring vanes, the plurality of stirring vanes being helically disposed on the stirring shaft.

10. The gypsum powder homogenizing and stirring system of claim 9, wherein the stirring cartridge comprises a first cartridge body and a second cartridge body removably connected, the stirring assembly further comprising a connection removably connected to the stirring portion;

the stirring part is positioned in the second cylinder body under the condition that the first cylinder body and the second cylinder body are in a connected state;

when the first cylinder and the second cylinder are in a separated state, the stirring part is exposed to the lower side of the first cylinder.