CN210304014U - Wet ceramic powder production line - Google Patents

Abstract

The utility model relates to the technical field of ceramic powder manufacturing, in particular to a ceramic wet powder manufacturing production line; comprises a plurality of single material pulping lines arranged in parallel, a pulp distribution mechanism and at least 1 homogenizing pulp pool; the single material pulping line comprises at least 1 feeding machine, a ball milling pulping device and a middle slurry transferring pool, wherein the feeding machine is connected with a feeding hole of the ball milling pulping device; the discharge hole of the ball milling slurry forming device is connected with the feed inlet of the slurry transferring pool; the slurry distribution mechanism comprises a plurality of slurry distribution branches, and the number of the slurry distribution branches is the same as that of the transfer slurry pools; the feed inlet of the pulp mixing branch is connected with the discharge outlet of the intermediate pulp tank, and the discharge outlet of the pulp mixing branch is connected with the homogenizing pulp tank; the problems of long ball milling time and high cost caused by the existing mixed ball milling are solved by adopting single material and independent ball milling; various devices are used for carrying out dehydration, low-temperature drying, crushing and granulation on the ceramic slurry in a combined manner, so that the problems of high energy consumption and high pollution of the existing spray drying tower are solved.

Description

Wet ceramic powder production line

Technical Field

The utility model relates to a pottery powder process technical field, especially a pottery wet process powder process production line.

Background

At present, in the production of ceramic raw materials, two methods of wet powder making and dry powder making are mainly used, wherein the dry powder making has great advantages in the aspect of energy saving, but the dry powder making technology is not mature at present, has higher requirements on raw materials, and increases the production cost of enterprises. Therefore, most ceramic enterprises adopt the traditional wet powder making method.

The traditional wet-type powder-making method is characterized in that a certain amount of water is added into a ceramic raw material by a ball mill to be ground into mud slurry with the water content of 32% -38%, then the mud slurry is dried and granulated by a spray drying tower, and the mud slurry is dried into water with the water content of about 7%, so that powder suitable for forming of an automatic brick press is prepared.

The traditional wet powder preparation method has long ball milling time, low ball milling efficiency and large power consumption. Consequently, a plurality of subsequent enterprises and individuals improve the production line or the processing method of the traditional wet milling method. Such as:

chinese patent CN2013106439179 discloses a standardized continuous treatment method for ceramic raw materials and a production line thereof, which utilizes a sand feeding unit and a raw ore mud feeding unit to classify the raw materials, realizes a staged standardized continuous treatment process, and has high ball milling efficiency and low energy consumption.

Chinese patent application CN2016112181651 discloses a ceramic wet process powder process production line of material loading and working method thereof, through multistage ball mill group respectively with particle diameter detection mechanism and moisture detection mechanism between closed-loop control, make the production line can carry out the management and control to the particle diameter and the water content of multistage ball mill group's thick liquids in real time and adjust, thereby guarantee the stability of particle diameter and water content in the powder production process, secondly, on guaranteeing that the thick liquids fineness accords with the production requirement, through the quantity that reduces ball mill mechanism, thereby realize energy-conserving effect.

In the above improvement, the sand and the slurry are fed by two feeding units respectively, but are finally mixed together and then ball-milled. The time of ball milling and the water content during ball milling are not reduced by the nature of the method.

In general, the existing wet milling production process and production line have the following two problems:

1. during ball milling, the sand and the raw ore mud are mixed together for ball milling, the ball milling time is long, the energy consumption is high (the energy consumption accounts for more than 20% of the total cost of ceramic production), the ball milling cost is increased by adding or subtracting a water reducing agent during ball milling, and the over-milling phenomenon can occur on part of raw materials;

2. during drying, the spray drying tower has high energy consumption (the energy consumption accounts for more than 35% of the total cost of ceramic production) and serious pollution.

Therefore, it is necessary to develop a new production line and a new production process to further reduce the production cost of the ceramic raw material, improve the production efficiency, reduce the energy consumption and reduce the environmental pollution.

SUMMERY OF THE UTILITY MODEL

The utility model provides a solve above-mentioned problem, and a pottery wet process powder process production line that provides.

In order to achieve the above function, the utility model provides a technical scheme is:

a wet ceramic powder making process comprises the following steps:

s1, performing independent ball milling, and performing independent ball milling on various sands, stones, mud and weathered stones to obtain various small slurries;

s2, respectively placing the small slurry into a slurry transfer pool;

s3, mixing and batching, taking materials from each single transfer slurry tank according to the required proportion, and then sending the materials into a homogenizing slurry tank for homogenizing to obtain slurry;

s4, dehydrating the slurry to obtain blocky pug;

s5, dividing the blocky pug into small pug blocks with the particle size smaller than 3 cm;

s6, drying the small mud blocks at a low temperature to obtain dried mud blocks with preset water content;

s7, crushing and granulating the dried mud blocks to obtain powder particles with the particle size meeting the requirement.

Preferably, the sand is separately ball-milled under a water content of 30% to 36%.

Preferably, the stones are individually ball milled at a water content of 30% to 36%.

Preferably, the slurry is separately ball milled at a water content of 42% to 48%.

Preferably, the weathered stone is separately ball-milled under the condition of a water content of 37 to 43%.

Preferably, the water content of the block-shaped pug in the step S4 is 18-25%.

Preferably, the predetermined moisture content of the dried clods in the step S6 is 7% to 10%.

Preferably, the method further comprises the following steps:

s8, screening, separating finished powder meeting the particle size requirement, and screening powder dust with too small particle size; and extruding the powder dust to form a block material, and performing the process step of S7 on the block material.

The utility model also provides a ceramic wet powder process production line, which comprises a plurality of single material slurry making lines, a slurry distribution mechanism and at least 1 homogenizing slurry pool which are arranged in parallel;

each single material pulping line comprises at least 1 feeding machine, a ball milling pulping device and a middle slurry transferring pool, wherein the feeding machine is connected with a feeding hole of the ball milling pulping device; the discharge hole of the ball milling and slurry forming device is connected with the feed inlet of the slurry transferring tank;

the slurry distribution mechanism comprises a plurality of slurry distribution branches, and the number of the slurry distribution branches is the same as that of the transfer slurry pools; the feed inlet of the pulp mixing branch is connected with the discharge outlet of the transfer pulp tank, and the discharge outlet of the pulp mixing branch is connected with the homogenizing pulp tank.

Preferably, the ceramic wet powder process production line further comprises: the device comprises a dewatering device, a high-speed mud cutting device, a ceramic mud material drying device and a ceramic mud material crushing and granulating device;

the discharge hole of the homogenizing pulp tank is connected with the feed inlet of the dewatering equipment; the discharge hole of the dewatering equipment is connected with the feed hole of the high-speed mud cutting device through a conveying belt; the discharge port of the high-speed mud cutting device is connected with the feeding port of the ceramic mud drying equipment through a conveying belt; and a discharge port of the ceramic pug drying equipment is connected with a feed port of the ceramic pug crushing and granulating equipment.

Preferably, the ball milling and slurry forming device is a single ball mill or a continuous ball mill set; the continuous ball mill set is formed by connecting a plurality of billiard mills in a stepped manner.

The beneficial effects of the utility model reside in that:

1. a plurality of single material pulping lines are utilized, and each single material or small formula material with similar ball milling performance corresponds to one pulping production line, so that the problems of long ball milling time and high cost caused by mixing and ball milling various ceramic raw materials with large ball milling performance difference in the existing process or production line are solved;

2. the ceramic slurry is dewatered, dried at low temperature, crushed and granulated by combining dewatering equipment, a high-speed mud cutting device, ceramic mud drying equipment and ceramic mud crushing and granulating equipment, so that the problems of high energy consumption and high pollution of the existing spray drying tower are solved.

Drawings

FIG. 1 is a process flow diagram of the present invention;

FIG. 2 is a block diagram of the production line of the present invention;

FIG. 3 is a schematic structural diagram of a high-speed mud cutting device;

FIG. 4 is a schematic structural diagram of a mud cutting mechanism;

FIG. 5 is a schematic view of the feed hopper;

FIG. 6 is a front view of the ceramic pug drying apparatus;

FIG. 7 is a left side view of the ceramic mud drying apparatus;

FIG. 8 is a top view of the ceramic mud drying apparatus;

FIG. 9 is a longitudinal cross-sectional view of the ceramic mud crushing apparatus;

FIG. 10 is a transverse cross-sectional view of the ceramic mud crushing apparatus;

fig. 11 is a schematic structural view of the crushing mechanism;

FIG. 12 is a schematic view of the engagement of the demolition hammer and the blade;

FIG. 13 is a schematic structural view of a discharging mechanism;

FIG. 14 is a schematic structural view of the active rolling cage;

FIG. 15 is a front view of the grinder;

fig. 16 is a left side view of the grinder;

FIG. 17 is a schematic view of the pressing apparatus;

fig. 18 is a schematic view of the cooperation of two squeeze rolls.

Detailed Description

The invention will be further elucidated with reference to fig. 1 to 18:

the wet ceramic powder making process shown in fig. 1 comprises the following steps:

s1, performing independent ball milling, and performing independent ball milling on various sands, stones, mud and weathered stones to obtain various small slurries;

s2, respectively placing the small slurry into a slurry transfer tank 1003;

s3, mixing and batching, taking materials from each single slurry transferring tank 1003 according to the proportion requirement, and then sending the materials into a homogenizing slurry tank 20 for homogenizing to obtain slurry;

s4, dehydrating the slurry to obtain blocky pug;

s5, dividing the blocky pug into small pug blocks with the particle size smaller than 3 cm;

s6, drying the small mud blocks at a low temperature to obtain dried mud blocks with preset water content;

s7, crushing and granulating the dried mud blocks to obtain powder particles with the particle size meeting the requirement.

In order to realize the process, a ceramic wet-process powder production line shown in fig. 2 is provided, which comprises more than 2 single-material slurry making lines 10 arranged in parallel, a batching mechanism 70, a plurality of homogenizing slurry pools 20, a dewatering device 30, a high-speed mud cutting device 40, a ceramic mud drying device 50 and a ceramic mud crushing and granulating device 60.

Each single material pulping line 10 comprises 3 feeders 1001, a ball milling pulping device 1002 and a transfer pulping tank 1003, wherein the feeders 1001 are connected with a feed inlet of the ball milling pulping device 1002; the discharge hole of the ball milling pulping device 1002 is connected with the feed inlet of the slurry transferring tank 1003. The number of feeders 1001 included in each single pulping line 10 may be increased or decreased accordingly as desired during actual use, and the number of feeders 1001 on each single pulping line 10 may be different.

The ball milling and slurry forming device 1002 is a single or multiple ball mills or a continuous ball mill set; the continuous ball mill set is formed by connecting a plurality of billiard mills in a stepped manner.

After various single ceramic materials are subjected to independent ball milling, small slurry with preset fineness is obtained, and then the small slurry is subjected to sieving and iron removal treatment to remove iron chips and impurities in the small slurry. In this example, the front end of the intermediate pulping tank 1003 is provided with an iron pulp removing tank 1004, the discharge port of the ball milling pulp forming device 1002 is connected with the feed port of the iron pulp removing tank 1004, and the discharge port of the iron pulp removing tank 1004 is connected with the feed port of the intermediate pulping tank 1003. The slurry rotating tank 1003 in each single slurry making line 10 correspondingly contains small slurry after ball milling. According to the requirement, the iron slurry pool 1004 can be arranged at the front end of the homogenizing slurry pool 20, or the iron slurry pool 1004 can be arranged at the front ends of the intermediate slurry pool 1003 and the homogenizing slurry pool 20 simultaneously, so as to achieve the purpose of removing iron and other impurities.

The ceramic slurry with the water content of 38-42 percent for producing the ceramic can be obtained after the single slurry amount is mixed according to the proportion required by production. The material distribution mechanism 70 comprises a plurality of slurry distribution branches, and the number of the slurry distribution branches is the same as that of the slurry transfer tank 1003; the feed inlet of the pulp mixing branch is connected with the discharge outlet of the intermediate pulp tank 1003, and the discharge outlet of the pulp mixing branch is connected with the homogenizing pulp tank 20.

Join in marriage thick liquid branch road and along the flow direction of thick liquids and have set gradually pneumatic ball valve, flow transmitter and pump, wherein:

the pneumatic ball valve is used for opening or closing the pipeline;

the flow transmitter is used for detecting the flow in the pipeline;

and the pump is used for conveying the slurry.

When the device is used, according to the mass of the ceramic powder to be produced, the mass of corresponding sand, stone, mud and weathered stone is obtained according to the proportion, the density of the small slurry of the ball-milled sand, stone, mud and weathered stone is measured, the volume of the 4 types of small slurry is converted, then the pump and the pneumatic ball valve of the corresponding slurry distribution branch are started, the small slurry is pumped into the homogenizing slurry tank 20 from the corresponding slurry transfer tank 1003 through a pipeline, the volume of the pumped small slurry is calculated by the flow transmitter, and the pneumatic ball valve 7013 and the pump are closed after the required volume is reached. The required ceramic slurry is obtained after the single slurry amounts are uniformly mixed in the homogenizing slurry tank 20.

The discharge hole of the homogenizing pulp tank 20 is connected with the feed hole of the dewatering equipment 30; the discharge hole of the dewatering equipment 30 is connected with the feed inlet of the mud cutting equipment through a conveyer belt; the discharge port of the high-speed mud cutting device 40 is connected with the feeding port of the ceramic mud drying equipment 50 through a conveyer belt; the discharge port of the ceramic pug drying equipment 50 is connected with the feed port of the ceramic pug crushing and granulating equipment 60.

The above-mentioned transfer chest 1003 is similar in structure to the homogenizing chest 20 except that it has a smaller volume than the homogenizing chest 20. The utility model discloses in, all be the equipment that current ceramic manufacture enterprise commonly used such as feeding machine, homogenization thick liquid pond, ball mill or continuous ball mill group that relate to, its structure, theory of operation and connected mode are that technical personnel in the field can learn, and the selection and the ratio of raw materials all adopt current general technique to realize in this case.

The raw materials to be ball-milled in the ceramic raw materials can be divided into 4 categories, namely sand, stone, mud and weathered stone. The ball milling time and the most suitable ball milling moisture content required for each major group are not the same. Under the condition that the water content is 30-36%, the sand material is ball-milled, and the effect is good; under the condition that the water content is 30-36%, the stone is subjected to independent ball milling, and the effect is good; under the condition that the water content is 42-48%, the mud is subjected to independent ball milling, and the effect is good; under the condition that the water content is 37-43%, the weathered stone is subjected to independent ball milling, and the effect is good.

In the conventional production line and production process, the ball milling is carried out after mixing the raw materials together, and only the ball milling time which is the longest ball milling time required in the 4 classes is taken as the ball milling time under a certain water content. In addition, in order to reduce the water content of the slurry during ball milling and thus reduce the energy consumption of the spray tower for drying the slurry, the water content of the slurry during ball milling is generally about 36%, and under the water content, a ceramic water reducing agent is required to be added during ball milling in order to improve the fluidity of the slurry and prevent slurry clots, which also increases the ball milling cost.

Below taking the ceramic raw materials of production ordinary ceramic tile as an example, explaining the ball-milling time and the relation of water content of mixing ball-milling and the single material ball-milling alone, wherein table a shows the required ball-milling time of various single materials when 36% water content, table B is the time and the water content table of traditional mixing ball-milling, table C is the utility model discloses a condition table of single material ball-milling alone under the optimum water content:

table a:

raw materials	Ball milling time (h)	Water content
			Sand	8	36％
Stone (stone)	12	36％
			Mud	3	36％
Weathered stone	5	36％

Table B:

raw materials	Ball milling time (h)	Water content
			Mixture material
	12	36％

Table C:

raw materials	Ball milling time (h)	Water content
			Sand
	6	33％
			Stone (stone)	10	33％
Mud	2	45％
			Weathered stone	4	40％

As can be seen from tables a and B, at a water content of 36% (water content of ceramic slurry for producing common floor tiles), the time (12 hours) of stone material requiring the longest ball milling time in raw materials is used as the ball milling time of the mixing ball milling, so that the whole ball milling process takes a long time, and at this ball milling time, mud, sand and weathered stone may be over-milled, and in addition, in order to prevent the coagulation of the slurry at this water content from affecting the ball milling effect, a water reducing agent is added during the ball milling.

As shown in the table C, by adopting a single material ball milling mode, the most appropriate water content and ball milling time can be selected for each single material, and raw materials such as mud, weathered stone and the like which are easy to condense during ball milling are subjected to ball milling by adopting larger water content, so that the use of a water reducing agent is avoided, and the cost is reduced.

According to actual production data, the following steps are carried out: compare with the mode of current mixed ball-milling, adopt the utility model discloses a slurrying technology, in the ball-milling stage, the ball-milling can be practiced thrift per ton ceramic raw materials: more than 25% of electricity and about 10-20 yuan of water reducing agent cost.

It should be noted that the utility model discloses a single material ball-milling mode alone, although the ball-milling stage can practice thrift the ball-milling cost, nevertheless because the final water content of the single material mixed ceramic slurry that forms after the ball-milling can be about 40%, the water content of ceramic slurry than traditional mixed ball-milling is about 4%. If the spray tower drying mode is continuously adopted, the cost saved in the ball milling process can be mostly offset by the energy consumption cost which is increased by the spray tower drying, and the energy-saving effect is not obvious. Therefore, the present invention adopts the processes of drying, crushing and material-making at low temperature (the above-mentioned process steps S3 to S7) to make the ceramic slurry into powder particles, and the following is a description of the related processes and equipment.

The slurry is dehydrated by adopting the existing dehydration equipment which mainly has two types, wherein one type is the dehydration by adopting a centrifugal machine or a vacuum dehydrator; another type is dewatering using a filter press. Mud obtained from the slurry treated by the centrifugal machine or the vacuum dehydrator is small in volume, the length of the largest edge of the mud is less than 5cm, and the mud can be directly dried due to the small volume; the blocky mud obtained by processing the slurry by using a filter press is large in volume and not beneficial to drying, and the blocky mud needs to be divided into small mud with the thickness of less than 5cm at the thickest part; the small pug is in the shape of a sheet, a block and/or a strip.

In this embodiment, a Jingjin single-chamber feeding filter press manufactured by Jingjin environmental protection products Co., Ltd is used to dewater the slurry, and the slurry with the water content of 40% -42% is dewatered to a block-shaped slurry (filter cake) with the water content of 18% -25%. Although the equipment is used for treating the gold concentrate and the tailings in the gold industry, the effect of the equipment is obvious when the equipment is applied to the ceramic slurry dehydration of the embodiment, and the obtained filter cake is uniform in thickness.

The lumpy pug is conveyed to a high-speed mud cutting device 40 for crushing treatment through a conveying belt arranged below a discharge port of the filter press. As shown in fig. 3, the high-speed mud cutting device 40 comprises a base 11, a mud cutting bin 12 and a mud cutting mechanism 13, wherein the mud cutting bin 12 is cylindrical and is fixedly arranged on the base 11; a beam 14 is arranged at the top of the mud cutting bin 12, and the mud cutting mechanism 13 is fixedly arranged on the beam 14; the feed hopper 15 is arranged above the mud cutting bin 12, the feed hopper 15 is fixed on the cross beam 14, the mud discharging bin 16 is arranged below the feed hopper 15, and the mud discharging bin 16 is installed on the base 11.

The mud cutting mechanism 13 shown in fig. 3 and 4 includes a rotating shaft 131, a motor 132 and 3 mud cutting knives 133, the rotating shaft 131 is rotatably mounted on the beam 14, the motor 132 is fixedly mounted on the beam 14 and connected with the rotating shaft 131 through a pulley set, the rotating shaft 131 is driven to rotate, the 3 mud cutting knives 133 are fixedly mounted on the rotating shaft 131 from top to bottom along the rotating shaft 131, the portion where the mud cutting knives 133 are mounted is located in the mud cutting bin 12, and the rotating shaft 131 is coaxial with the mud cutting bin 12.

As shown in fig. 4, the longitudinal section of the feeding hopper 15 is in a shape of "herringbone", and has 1 inlet 151 and 2 outlets 152, and a sharp material separating edge 153 is disposed in the middle, and the material separating edge 153 is used to divide the filter cake falling into the feeding hopper 15, so that the filter cake can uniformly fall into the mud cutting bin 12 along two directions, thereby increasing the mud cutting speed of the mud cutting knife 133, and making the volume of the small mud material after cutting smaller.

As shown in fig. 4, each mud cutter 133 has 3 blades 1331, and two adjacent mud cutters 133 are arranged in a staggered manner, i.e. the two adjacent blades 1331 are not in the same direction, so as to improve the cutting efficiency of the mud cutter 133. In addition, the number of the mud cutters 133 and the number of the blades 1331 on each mud cutter 133 can be increased or decreased according to the volume of the small mud materials required after cutting.

The mud outlet bin 16 is conical or round table-shaped, and the opening at the upper part is larger than the opening at the lower part so as to be convenient for collecting small mud materials. In order to observe the working condition of the mud cutting mechanism 13 conveniently, a bin door 121 is arranged in the middle of the mud cutting bin 12, and the bin door 121 is made of a transparent acrylic plate.

The high-speed mud cutting device 40 is provided with a mud cutting bin 12 and a mud cutting mechanism 13, the mud cutting bin 12 is provided with a feed hopper 15 with 1 inlet and 2 outlets, small mud blocks fall into the feed hopper 15 and are divided into two parts by the feed hopper 15 and respectively enter the mud cutting bin 12 from two outlets 152 of a feed inlet, and 3 mud cutting knives 133 rotating at a high speed from top to bottom on the mud cutting mechanism 13 gradually divide the small mud blocks into small mud materials with sizes meeting requirements.

The small mud blocks are cut for many times by the mud cutter 133 and can be divided into small mud materials with the grain diameter of about 1 cm-3 cm, so as to facilitate the subsequent drying process.

Fig. 6 to 8 show a ceramic pug drying apparatus 50 adopted in the present embodiment, which includes a drying box 21, a conveying device 22, a hot air conveying pipeline 23, a moisture discharging main pipeline 24, a moisture discharging fan 25 and a circulating fan 26.

The front part of the drying box 21 is a hot air cavity 211, and the rear part is a drying cavity 212. The conveying device 22 comprises 5 conveying belts, and the front part and the rear part of each conveying belt are respectively provided with a driving wheel and a driven wheel, and the driving wheels are fixedly arranged on an output shaft of the motor and driven by the motor to rotate. The 5 conveying belts are sequentially arranged in the drying cavity 212 from top to bottom, one end of each conveying belt is a feeding end, the other end of each conveying belt is a blanking end, the 5 conveying belts are 4 chain-link type mesh belts and 1 conveying belt, and the conveying belts are arranged at the lowest layer; on the drying cavity 212, a material baffle 2121 is obliquely arranged at the tail part of the blanking end of the conveying belt, so that small pugs are ensured to completely fall from the blanking end of the previous layer to the feeding end of the next layer.

In order to heat the small pug more uniformly, 3 stirring rods 29 are uniformly arranged above each chain type mesh belt along the conveying direction of the conveying belt, a plurality of strip-shaped stirring pieces are uniformly arranged on each stirring rod 29 along the circumferential direction, and the stirring rods are driven by a motor to rotate. When the small pug is conveyed below the stirring rod 29 along the chain type mesh belt, the rotary stirring piece turns over the small pug above the chain type mesh belt, so that the small pug is heated more uniformly, and the small pug is ensured to be uniformly dried.

Along the conveying direction of the conveying belt, a plurality of hot air through holes 2131 are uniformly formed in the upper parts and the lower parts of the partition plates 213 of the hot air cavity 211 and the drying cavity 212 respectively, the hot air through holes 2131 in the upper parts are positioned above the chain type mesh belt on the uppermost layer, and the hot air through holes 2131 in the lower parts are positioned between the chain type mesh belt on the lowermost layer and the conveying belt; the upper part of the hot air cavity 211 is uniformly provided with a plurality of hot air inlets 2111, and the hot air inlets 2111 are respectively communicated with one end of the hot air conveying pipeline 23. The other end of the hot air conveying pipeline 23 is respectively communicated with an exhaust pipe of the kiln and an air outlet of the air heater, and the middle part of the hot air conveying pipeline 23 is also provided with an air blower. In the actual use process, when the residual heat energy of the kiln realizes the low temperature state required by the powder making process, namely the temperature in the drying box body 21 is between 80 and 250 ℃, the residual heat energy of the kiln is directly utilized to dry the small pug, thereby achieving the maximum energy-saving effect; when the residual heat of the kiln is insufficient, the hot air heater is started to supplement hot air so as to ensure that the drying equipment can work normally. The temperature in the drying box 21 can be detected by arranging a temperature sensor in the drying box 21, and can be controlled by controlling the start and stop of the hot air blower, which are common technical means in the technical field and the principle of which is not described herein again.

The middle of the top of the drying cavity 212 is uniformly provided with a plurality of circulating fans 26 along the conveying direction of the conveying belt, and hot air in the hot air cavity 211 circularly flows in the drying cavity 212 through the circulating fans 26. The top of drying cavity 212 evenly is provided with a plurality of at the one end of keeping away from hot-blast import 2111 along the direction of delivery of conveyer belt and dehumidifies the mouth, and in this embodiment, the length of drying cavity 212 is about 20m, is equipped with 9 and dehumidifies the mouth altogether, and every 3 are dehumidified the mouth and divide the pipeline 27 for a set of dehumidification and connect, and every is dehumidified and divide pipeline 27 and divide the pipeline 25 and communicate with the main pipeline 24 of hydrofuge respectively, takes out the damp wind in drying cavity 212 through the hydrofuge fan 25. An adjusting valve 28 is arranged between the dehumidifying fan 25 and the dehumidifying branch pipe 27, and the air outlet quantity is adjusted through the adjusting valve 28, so that the dehumidifying speed is adjusted.

In this embodiment, the small pug after being processed by the high-speed pug cutting device 40 is conveyed to the swing cloth belt conveyor 6 at the front end of the ceramic pug drying device 50 through the conveyor belt, and then uniformly sprinkled on the feeding end of the chain type mesh belt at the uppermost layer of the ceramic pug drying device 50 through the swing cloth belt conveyor 6, the small pug moves from the feeding end to the blanking end along the chain type mesh belt, and then falls from the blanking end to the feeding end of the next layer of chain type mesh belt, and reciprocates downwards in this way, and finally dried mud blocks are conveyed out of the drying box body 21 through the conveyor belt, during this process, the kiln waste heat and/or hot air generated by the hot air blower enters the hot air conveying pipeline 23 through the hot air cavity 211 and passes through the upper and lower rows of hot air through holes 2131 of the partition plate 213 to circulate up and down in the drying cavity 212 under the action of the circulating fan 26, thereby ensuring the full contact of the hot air and the small pu, the dry hot air takes away the moisture on the small mud materials gradually, then the dry hot air is changed into wet hot air with lower temperature, and the wet hot air is discharged into a moisture exhaust main pipeline 24 through a moisture exhaust fan. After the small pug is dried by the drying box 21, the water content of the small pug is reduced to 7% -10%, and the small pug is conveyed out of the drying box 21 through a conveying belt. The swing cloth belt conveyor 6 is a feeding device commonly used in the drying industry, and the structure thereof can be referred to market selling products, and the principle thereof is not described herein in detail.

The dehumidifying fan 25 and the circulating fan 26 are referred to in the specification for convenience of description, and they are named according to their use in the specification, and may be any fans that can be used in commercial products.

The small pug is spread by the swing cloth belt conveyor 6 and uniformly sprayed on the chain type mesh belt to be dried at low temperature, so that the small pug is fully contacted with dry hot air, and the drying efficiency is accelerated. Secondly, the temperature in the drying cavity 212 of the embodiment is between 80 ℃ and 250 ℃, and the water in the small pug can be rapidly evaporated by setting the temperature.

The dried small pug is conveyed to a feed inlet of a ceramic pug crushing and granulating device 60, and the ceramic pug crushing and granulating device 60 is used for rapidly crushing and granulating the dried pug.

As shown in fig. 9 and 10, the ceramic pug crushing and granulating device 60 comprises a crushing bin 31, a crushing assembly 32 and a discharging mechanism 33, wherein the crushing assembly 32 is arranged in the crushing bin 31, and the discharging mechanism 33 is arranged below the crushing bin 31.

The crushing assembly 32 comprises a rotating shaft 321, a motor A322, 8 crushing mechanisms 323 and 2 circular arc-shaped screens 324, wherein each 4 crushing mechanisms 323 correspond to one circular arc-shaped screen 324, and the crushing mechanisms 323 are approximately and uniformly fixed on the rotating shaft 321; the circular arc-shaped screen 324 is coaxial with the rotating shaft 321 and is fixedly installed right below the rotating shaft 321, a plurality of through holes are uniformly formed in the circular arc-shaped screen 324, and the diameter of each through hole is 0.5-1.5 mm. The diameter of the through hole determines the maximum particle size of the crushed and granulated powder particles, and the diameter of the through hole can be set according to the actual production requirement. Two ends of the rotating shaft 321 respectively penetrate out of the crushing bin 31, the two ends are rotatably mounted on the crushing bin 31 through bearings, one end of the rotating shaft is connected with the motor A322 through a gearbox, and the motor A322 drives the rotating shaft 321 to rotate.

As shown in fig. 11, the crushing mechanism 323 includes 2 turrets 3231, 12 blades 3232, and 6 crushing hammers 3233; the 2 rotating frames 3231 are arranged in a left-right mirror direction, and 6 blades 3232 are uniformly fixed on the circumference direction of each rotating frame 3231; the hammer 3233 is in the form of a long bar, and left and right ends thereof are fixed to the distal end portions of the left and right blades 3232, respectively. Of course, in actual use, the number of the crushing mechanisms 323 and the number of the crushing hammers 3233 on each crushing mechanism 323 can be adjusted according to actual needs. The extreme end of the breaker 3233 has a clearance with the circular arc shaped screen 324, which we refer to as a friction clearance, which in this embodiment is about 1 mm.

The breaking hammer 3233 includes a connecting member 32331 and a hammer body 32332; as shown in fig. 12, the tail end of the blade 3232 is provided with a plurality of anti-slip grooves 32321, the lower surface of the connector 32331 fixed to the blade 3232 is correspondingly provided with an anti-slip strip 323311, and the middle of the upper top surface is provided with a mounting groove for mounting the hammer body 32332. In this embodiment, the hammer body 32332 is made of ceramic, and the ceramic has high hardness and high density, which is beneficial to improving the striking effect and the service life of the breaking hammer 3233.

As shown in fig. 13, the discharging mechanism 33 includes a discharging belt 331, an active rolling cage 332, a passive rolling cage 333, a motor B334, and a discharging belt holder 335; the driving rolling cage 332 and the driven rolling cage 333 are rotatably arranged on the discharging belt frame 335, and the motor B334 is connected with the driving rolling cage 332 and drives the driving rolling cage 332 to rotate; the material outlet belt 331 is sleeved on the active rolling cage 332 and the passive rolling cage 333.

In this embodiment, the driving roller cage 332 and the driven roller cage are in the shape of a spinning cone. The structure of the active roller cage 332 is the same as that of the passive roller cage 333 except that one end of the rotating shaft 3321 is long due to the need to be connected to the motor B334 and provided with a connecting structure. The structures of the active roller cage 332 will be described below by taking the example of the both.

As shown in fig. 14, the active roll cage 332 comprises a rotating shaft 3321, a front mounting plate 3322, a rear mounting plate 3323, a support plate 3323, and a plurality of cage bars 3324; the front mounting plate 3322, the rear mounting plate 3323 and the support plate 3323 are cylindrical and the cross-sectional diameter of the support plate 3323 is larger than that of the front mounting plate 3322 and the rear mounting plate 3323, and the front mounting plate 3322, the rear mounting plate 3323 and the support plate 3323 are fixed to the front end, the rear end and the middle of the rotary shaft 3321, respectively; a plurality of cage bars 3324 are uniformly distributed along the circumferential direction of the rotary shaft 3321, and the front, rear and middle portions of the cage bars 3324 are fixed to the front mounting plate 3322, the rear mounting plate 3323 and the support plate 3323, respectively, thereby forming a spindle-shaped cage body.

The discharging mechanism 33 further comprises 9 upper supporting rollers 337 and 3 lower supporting rollers 336, the upper supporting rollers 337 are uniformly arranged on the discharging belt frame 335, and the upper supporting rollers 337 are in contact with the lower surface of the discharging belt 331. The upper supporting roller 337 is used to support the discharging belt 331 and prevent the discharging belt 331 from being deformed due to excessive load when powder particles are conveyed. In addition, in order to prevent the powder particles from spilling from the front and back sides of the discharging belt 331 during the feeding process of the discharging belt 331, the front and back sides of the discharging belt 331 are provided with retaining edges 311.

When in use, the dried mud falls into the crushing bin 31 of the crushing device from the feeding hole above the crushing device; the dried mud is broken into large particles falling onto the circular arc-shaped screen 324 after being cut and impacted by the breaking hammers 3233 rotating at high speed in the breaking bin 31, the continuous circumferential rotation of the breaking hammers 3233 can continuously collide with the large particles sinking onto the circular arc-shaped screen 324 to drive the large particles to circularly throw above the circular arc-shaped screen 324, and therefore the large particles are gradually collided and broken into small particles with small particle size; when the breaker 3233 rotates above the circular arc-shaped screen 324, the small particles with small particle size on the circular arc-shaped screen 324 are pressed into the friction gap between the breaker 3233 and the circular arc-shaped screen 324 by the rotation of the breaker 3233, and the small particles pressed into the friction gap rub against the through holes on the circular arc-shaped screen 324, so that the small particles are rubbed to form ultra-small particle size particles, and the ultra-small particle size particles are finally passed through the through holes on the circular arc-shaped screen 324, dropped onto the discharging belt 331 and transported out through the above-mentioned crushing and rubbing granulation.

In the process of the utility model, the abrasive particles are optimized for the powder particles, namely, the powder particles are polished, so that the surface of the powder particles is smoother. The purpose of optimizing the abrasive grains is to increase the flowability of the powder, adjust the grain composition of the grains and adjust the volume weight of the grains. In this embodiment, the process of optimizing the abrasive particles is performed by using an abrasive machine.

As shown in fig. 15 and 16, the abrasive machine includes a mount 41, an abrasive drum 42, and a motor 43. The abrasive cylinder 42 is cylindrical, and an opening thereof is obliquely and rotatably provided on the mounting base 41. Circular recess 421 has been seted up in the middle part of abrasive cylinder 42's surface, and motor 43 fixed mounting installs the belt pulley on the output shaft of motor 43 on mount pad 41, and the belt cover is established on circular recess 421 and belt pulley, through the indirect drive abrasive cylinder 42 rotation of motor 43.

The outer surface of abrasive material cylinder 42 evenly is provided with 4 rolling sand grips 422 along its radial direction, and every rolling sand grip 422 corresponds and is provided with the wheel 44 that rolls, and the wheel 44 that rolls is rotatable to be installed on mount pad 41, supports abrasive material cylinder 42 through the wheel 44 that rolls, reduces the frictional force between abrasive material cylinder 42 and the mount pad 41 simultaneously, makes it change easily and rotates.

The left end and the right end of the grinding material cylinder 42 are respectively provided with a limit convex strip 423, and the limit convex strips 423 are used for preventing the grinding material cylinder 42 from shifting left and right. The left end and the right end of the mounting base 41 are respectively provided with a limiting roller 45 matched with the limiting convex strip 423.

After the powder particles are put into the grinding cylinder 42, the motor 43 drives the grinding cylinder 42 to rotate, and the powder particles or the powder particles in the grinding cylinder 42 rub against the inside of the grinding cylinder 42, so that the surface of the powder particles is polished, and the abrasive particles are optimized.

The powder particles after the abrasive material optimization treatment are subjected to a particle size screening process, so that powder dust with an excessively small particle size is screened out, in this embodiment, powder dust with a particle size of 0.05 mm-0.18 mm is screened out, finished powder meeting the particle size requirement is sorted out, and the finished powder is sent to a preset finished product bin to be stored for later use.

Before the powder particles are polished by using a grinding machine, a reinforcing agent can also be added into the powder particles, and then the mixed powder particles are ground by the grinding machine. So that the reinforcing agent is adhered to the surfaces of the powder particles after the optimized grinding material treatment.

The function of the reinforcing agent adhered to the surface of the powder particles is to prevent the powder particles from being broken in the subsequent process and to improve the viscosity of the powder particles.

As the reinforcing agent, various reinforcing agents which are currently commercially available and used for ceramic green bodies can be used, and in this example, sodium carboxymethylcellulose is used as the reinforcing agent.

In order to improve the utilization rate, the powder dust with undersize particle size can be recovered and extruded by an extrusion device.

The extrusion is performed by an extrusion device, as shown in fig. 17, the extrusion device includes a working bin 51 and two extrusion rollers 52 arranged in the working bin 51, the two extrusion rollers 52 are parallel and rotate oppositely, and both ends of the extrusion roller 52 are fixedly installed in the working bin 51 through bearing seats. The output end of the extrusion motor 101 is in transmission with the input end of the speed reducer 102 through a transmission belt, the output end of the speed reducer 102 is in transmission with the coupler 103, the coupler 103 is in transmission connection with the end of one of the extrusion rollers 52, the end parts of the same sides of the two extrusion rollers 52 are respectively provided with a transmission gear 123 in meshing transmission, so that the extrusion motor 101 drives one extrusion roller 52 to rotate through the speed reducer 102 and the coupler 103, the other extrusion roller 52 is driven to rotate by utilizing the two meshing transmission gears 123, and finally the action that the two extrusion rollers 52 rotate in opposite directions is realized. As shown in fig. 18, a plurality of extrusion grooves 521 which are annularly arranged and extend along the axial direction of the extrusion rollers 52 are formed on the surface of each extrusion roller 52, and the extrusion grooves 521 on the surfaces of the two extrusion rollers 52 correspond one to meet with the rotation of the two extrusion rollers 52 to form extrusion cavities 522 at the positions where the surfaces are tangent. A blanking hopper 53 is provided above the working bin 51 of the present embodiment. The powder dust is conveyed to the roll surfaces of the two squeezing rolls 52 from the blanking hopper 53, the squeezing grooves 521 are filled, and the powder dust rotates along with the two squeezing rolls 52 in opposite directions, so that a squeezing cavity 522 is formed at the tangent position of the roll surfaces to realize the extrusion forming of the powder dust, and then block materials with the same shape as the squeezing cavity 522 are obtained, and the block materials are discharged along with the rotation action of the two squeezing rolls 52.

The block material is then crushed and granulated by the ceramic pug crushing and granulating device 60, thereby realizing the reutilization of powder dust.

The utility model provides a pottery wet process powder process, it has solved the problem that ceramic raw materials ball-milling is long, the power consumption is high, has also solved the problem of current drying tower high energy consumption, high pollution simultaneously, reduces enterprise manufacturing cost by a wide margin. The utility model discloses provide simultaneously with the supporting production line of this technology.

Claims (4)

1. The utility model provides a pottery wet process powder process production line which characterized in that: comprises a plurality of single material pulping lines arranged in parallel, a pulp distribution mechanism and at least 1 homogenizing pulp pool;

each single material pulping line comprises at least 1 feeding machine, a ball milling pulping device and a middle slurry transferring pool, wherein the feeding machine is connected with a feeding hole of the ball milling pulping device; the discharge hole of the ball milling and slurry forming device is connected with the feed inlet of the slurry transferring tank;

the slurry distribution mechanism comprises a plurality of slurry distribution branches, and the number of the slurry distribution branches is the same as that of the transfer slurry pools; the feed inlet of the pulp mixing branch is connected with the discharge outlet of the transfer pulp tank, and the discharge outlet of the pulp mixing branch is connected with the homogenizing pulp tank.

2. The ceramic wet milling production line of claim 1, wherein: the ceramic wet process powder process production line still includes: the device comprises a dewatering device, a high-speed mud cutting device, a ceramic mud material drying device and a ceramic mud material crushing and granulating device;

the discharge hole of the homogenizing pulp tank is connected with the feed inlet of the dewatering equipment; the discharge hole of the dewatering equipment is connected with the feed hole of the high-speed mud cutting device through a conveying belt; the discharge port of the high-speed mud cutting device is connected with the feeding port of the ceramic mud drying equipment through a conveying belt; and a discharge port of the ceramic pug drying equipment is connected with a feed port of the ceramic pug crushing and granulating equipment.

3. The ceramic wet milling production line of claim 1, wherein: the ball milling and slurry forming device is a single ball mill or a continuous ball mill set; the continuous ball mill set is formed by connecting a plurality of billiard mills in a stepped manner.

4. The ceramic wet process powder production line of any one of claims 1 to 3, characterized in that: the front end in transfer thick liquid pond is provided with the deironing thick liquid pond, and the feed inlet in deironing thick liquid pond is connected to the discharge gate that the ball-milling becomes thick liquid device, and the feed inlet in transfer thick liquid pond is connected to the discharge gate in deironing thick liquid pond.

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