Functional ceramic production device and process

Abstract

The application belongs to the field of functional ceramic production and preparation, and particularly relates to a functional ceramic production device and a process thereof. The device comprises a drying device, a stirring device, a forming device, a ball milling device and a drying device. The drying device comprises a feeding mechanism and a heating and blowing mechanism, and further comprises a drying mechanism. The drying mechanism comprises a drying box inner shell, a drying box outer shell and a box cover. The drying box outer shell is coaxially fixed with the drying box inner shell, and the diameter of the drying box outer shell is larger than that of the drying box inner shell. The box cover is fixedly connected with the drying box outer shell to form a cavity. The heating and blowing mechanism is connected with the drying box inner shell through an air inlet pipe. The air inlet pipe is provided with an opening which is connected with the cavity. The feeding mechanism is connected with the drying box inner shell through a feeding pipe which is provided with an atomizing nozzle. The scheme solves the problem of adhesion of the inner wall of the drying box caused by the cooling of the external environment.

Description

Technical Field

[0001] This invention belongs to the field of functional ceramics production and preparation, specifically relating to a functional ceramics production apparatus and its process. Background Technology

[0002] The general production process of functional ceramics involves seven steps: clay extraction, grinding, drying, granulation, molding, firing, and cooling. The drying stage is the most critical, as the quality of granulation directly affects the final product. Spray drying has become an essential process for producing modern oxide ceramics with uniform composition, uniform density of dry-pressed green bodies, and consistent performance.

[0003] Currently, a spray granulation tower with patent number CN203370515U is available on the market. It includes a granulation fluidized tower, an air inlet, and an air outlet. It also includes a spray device located in the middle of the granulation fluidized tower and an inclined discharge plate located below the spray device. The discharge plate has air distribution holes with gradually increasing diameters from high to low. The spray device is connected to the air inlet, and the lowest point of the discharge plate, located on the side wall of the granulation fluidized tower, has a discharge outlet. This invention allows the discharge plate to simultaneously function as an air distribution plate, simplifying the structural design. Furthermore, it allows the final granules to slide down the inclined discharge plate, reducing production energy consumption. The larger air distribution holes closer to the discharge outlet prevent incompletely spray-granulated particles from being discharged, ensuring that the seed crystals are evenly and multi-layeredly coated during the granulation process, resulting in uniform coating layers and particle size in the final particles.

[0004] However, there is also a problem: 1. The scheme does not take into account environmental factors. In the cold conditions of the north, the inner wall of the granulation tower is prone to low temperature, which makes the inner wall temperature lower than the center temperature. The raw materials are not easy to dry on the inner wall and tend to stick to the inner wall, resulting in low efficiency. Summary of the Invention

[0005] This invention provides a functional ceramics production apparatus to solve the problem of adhesion to the inner wall of the drying oven caused by a cooling external environment.

[0006] To achieve the above objectives, this solution provides a functional ceramic production apparatus, including a feeding device, a ball milling device, a drying device, a stirring device, a granulation device, a molding device, and a kiln firing device, which are connected in sequence. The granulation device includes a heating and blowing mechanism and a drying mechanism, which are connected to the drying mechanism.

[0007] The drying mechanism includes an inner shell of the drying chamber, an outer shell of the drying chamber, and a lid. The outer shell of the drying chamber is coaxially fixed with the inner shell of the drying chamber, and the diameter of the outer shell of the drying chamber is larger than that of the inner shell of the drying chamber. The lid of the drying chamber is fixedly connected to the outer shell of the drying chamber to form a cavity. The heating and blowing mechanism is connected to the inner shell of the drying chamber through an air inlet pipe. The air inlet pipe has an opening that connects to the cavity. The feeding mechanism is connected to the lid of the drying chamber through a feeding pipe. The inner shell of the drying chamber is provided with an air outlet pipe, and the feeding pipe is provided with an atomizing nozzle.

[0008] The principle of this invention is as follows: the operator adds a dispersant to the pre-prepared clay and ball mills it using a ball milling device, then puts it into a drying device for drying, and then adds a modifier and stirs it in a stirring device to obtain the raw slurry.

[0009] The operator starts the heating blower mechanism, blowing filtered hot air into the outer and inner shells of the drying chamber through the air inlet pipe and opening, so that the entire drying chamber is at a uniform temperature. At the same time, hot air is also circulated in the cavity, preventing the drying effect from being poor due to the low temperature of the outside temperature causing the inner wall temperature of the drying chamber to be low, resulting in a large amount of adhesion and reduced efficiency.

[0010] The mixed slurry is pumped into the feed pipe and then sprayed out from the atomizing nozzle to form a water mist. When the water mist is sprayed out, it comes into contact with the hot air in the drying chamber and is immediately dried, forming spherical powder that falls naturally to the bottom of the drying chamber, while lighter powder is carried out by the air outlet pipe.

[0011] The beneficial effects of this solution are as follows: This solution encloses the drying oven with an outer shell, which together with the oven lid forms a sealed cavity. Hot air is circulated into both the cavity and the inner shell of the drying oven, effectively preventing excessive adhesion to the inner wall caused by the low temperature of the inner shell due to the low ambient temperature.

[0012] Furthermore, it also includes a dust removal mechanism, which comprises a cleaning section and a dust removal section. The dust removal section includes a dust collection box, which is connected to the inner shell of the drying chamber via an exhaust pipe. The dust collection box is equipped with an exhaust pipe, and a cloth bag is located between the exhaust pipe and the exhaust pipe. The exhaust pipe cooperates with the cloth bag, and the cloth bag is fixedly connected to the dust collection box. The cleaning section includes an air jet pipe and a hydraulic cylinder. The hydraulic cylinder cooperates with the outer shell of the drying chamber. One end of the air jet pipe is connected to a cavity, and the other end is connected to the dust collection box and located inside the cloth bag. The air jet pipe is equipped with a pressure valve, and the outer shell of the drying chamber is equipped with a blocking block, which cooperates with the opening.

[0013] Dust-laden air enters the dust collector, and the exhaust pipe is aimed at the filter bags. The air passes through the bags, and the dust adheres to them, then falls to the bottom of the dust collector due to gravity. The filtered air is then discharged to the outside, preventing dust pollution in the factory. The operator moves the hydraulic cylinder's hydraulic rod forward, compressing the flexible part of the drying chamber's outer shell. This moves the blocking block, sealing the opening and creating a closed space. The hydraulic rod continues to compress, increasing the pressure inside the cavity. When a certain pressure is reached, the pressure valve opens, and gas is ejected from the jet pipe located inside the filter bags. The high-pressure gas sprays off the dust adhering to the bags, which then falls to the bottom of the dust collector due to gravity. When the filter bags become clogged again, the operator moves the hydraulic rod back, the pressure rod retracts, the drying chamber's outer shell returns to its original shape, and the drying chamber resumes operation. This mechanism effectively prevents filter bag clogging.

[0014] Furthermore, the jet pipe is equipped with a nozzle. The nozzle allows the high-pressure impact gas to impact the fabric bag more comprehensively.

[0015] Furthermore, the filter bag, air jet pipe, and nozzle are provided in three separate, equally spaced configurations. This three-layer filtration system allows for more effective removal of airborne dust.

[0016] Furthermore, a pressure sensor and a one-way valve are installed on the vent pipe, and the pressure sensor is electrically connected to the hydraulic cylinder. When the filter bag is clogged, the pressure at the vent pipe port increases due to the blockage. The pressure sensor detects this increased pressure and triggers the hydraulic cylinder to start. When the dust adhering to the filter bag is cleared, the pressure at the vent pipe decreases. The pressure sensor detects this decrease and triggers the hydraulic cylinder to return to its original position. Simultaneously, the one-way valve prevents gas backflow. This reduces manual operation and saves costs.

[0017] Furthermore, a screen is installed at the bottom of the inner shell of the drying chamber. The screen can effectively filter out powders of unsuitable size, thus improving the quality of granulation.

[0018] Furthermore, the air inlet pipe of the heating blower mechanism is equipped with an air filter. The air filter can filter out impurities in the air, preventing these impurities from affecting the purity of the granulated product.

[0019] Furthermore, it also includes a pressure plate, which is fixedly connected to the hydraulic cylinder and is parallel to the outer shell of the drying oven. The pressure plate can better compress the outer shell of the drying oven.

[0020] This solution discloses a functional ceramics manufacturing process, including the following steps:

[0021] S10: Pour the clay into a wet ball mill, add the dispersant, and then start the wet ball mill to obtain a slurry;

[0022] S20: The obtained slurry is dried by a dryer to obtain powder;

[0023] S30: Add modifier to powder, put it into a mixer, add water to the mixer, and then start the mixer to mix to obtain raw slurry;

[0024] S40: The obtained pulp is sent into the drying mechanism for drying, and then dust is removed. Finally, a high-strength and high-performance fine powder is obtained from the bottom of the drying box.

[0025] S50: Pour the refined powder into a high-pressure container and obtain a preliminary blank through static pressing;

[0026] S60: The initial blank is taken out and put back into the drying oven for drying. Then the blank is put into the kiln for firing, and finally the desired ceramic is obtained.

[0027] This method can effectively produce high-quality, high-strength functional ceramics.

[0028] Furthermore, in step S20, the obtained powder needs to be screened on a 100-mesh sieve. This step can effectively improve the strength of the ceramic. Attached Figure Description

[0029] Figure 1 This is a cross-sectional view of a functional ceramics production device in its unextruded state.

[0030] Figure 2 This is a cross-sectional view of a functional ceramics production device under extrusion conditions.

[0031] Figure 3 This is a process flow diagram for the production of a type of functional ceramic.

[0032] Figure 4 This is an enlarged view of the initial state of a blocking block in a functional ceramics production device.

[0033] Figure 5 This is an enlarged view of the extrusion state of a blocking block in a functional ceramics production device. Specific implementation methods

[0034] The markings in the accompanying drawings of the instruction manual include: 1. Inner shell of the drying chamber; 2. Outer shell of the drying chamber; 3. Blocking block; 4. Chamber cover; 5. Air inlet pipe; 6. Atomizing nozzle; 7. Opening; 8. Pressure plate; 9. Hydraulic cylinder; 10. Screen; 11. Air outlet pipe; 12. Filter bag; 13. Pressure valve; 14. Air jet pipe; 15. Nozzle; 16. Dust collector; 17. Feeding pipe; 18. Exhaust pipe.

[0035] The basic implementation examples are as follows: Figure 1 As shown:

[0036] This solution provides a functional ceramics production apparatus, including a feeding device, a ball mill, a drying device, a stirring device, a granulation device, a molding device, and a kiln firing device. The feeding device is connected to the ball mill via a pipeline, the ball mill is connected to the drying device via a pipeline, the drying device is connected to the stirring device via a pipeline, the stirring device is connected to the feeding pipe of the drying mechanism of the granulation device via a pipeline, the granulation device is connected to the molding device via a pipeline, and the molding device is connected to the kiln firing device via a pipeline. It also includes a drying mechanism, which comprises a drying chamber inner shell 1, a drying chamber outer shell 2, a blocking block 3, a chamber cover 4, an air inlet pipe 5, an atomizing nozzle 6, an opening 7, a pressure plate 8, a hydraulic cylinder 9, a screen 10, an air outlet pipe 11, and a feeding pipe 17. The drying chamber inner shell 1 is placed on the ground and is divided into three parts: a feeding section, a drying section, and a collecting section. The drying section is the widest to prevent liquid mist from adhering to the drying chamber inner shell 1. The outer shell 2 of the drying oven is structurally similar to the inner shell 1, but the outer shell 2 is made of flexible material and has a certain degree of toughness. However, its overall diameter is larger than that of the inner shell 1. The outer shell 2 and the inner shell 1 are fixedly connected. The lid 4 is just the right size to cover the outer shell 2 and is fixedly connected to the outer shell 2 with bolts, so that the outer shell 2 and the inner shell 1 form a sealed cavity. One end of the air inlet pipe 5 is connected to the heating blower mechanism, and the other end is connected to the inner shell 1 through the outer shell 2. At the same time, the air inlet pipe 5 also has an opening 7 in the cavity, so that the air inlet pipe 5 communicates with the cavity. The outer shell 2 also has a blocking block 3, which is aligned with the opening 7.

[0037] One end of the feeding pipe 17 is connected to the feeding mechanism, and the other end passes through the cover 4 and connects to the inner shell 1 of the drying chamber. An atomizing nozzle 6 is installed on the end of the feeding pipe 17 located in the inner shell 1 of the drying chamber, and the atomizing nozzle 6 is located in the center of the drying chamber. A screen 10 is also provided at the bottom of the inner shell 1 of the drying chamber, and the screen 10 is parallel to the inner shell 1 of the drying chamber. One end of the air outlet pipe 11 is connected to the cavity, and the other end is connected to the filter bag 12 inside the dust removal mechanism. The three air outlets of the air outlet pipe 11 are all inside the filter bag 12.

[0038] The hydraulic cylinder 9 is fixed on the frame, and the pressure plate 8 is fixed on the hydraulic rod. The pressure plate 8 is parallel to the outer shell of the drying part of the drying chamber. In the non-compression state, the pressure plate 8 is not in contact with the outer shell 2 of the drying chamber. When the hydraulic cylinder 9 starts to operate, the pressure plate 8 will compress the outer shell 2 of the drying chamber.

[0039] As attached Figure 1 , Figure 2 , Figure 3 As shown:

[0040] The drying mechanism also includes a dust removal mechanism, which comprises filter bags 12, a pressure valve 13, jet pipes 14, nozzles 15, a dust collection box 16, and an exhaust pipe 18. The dust collection box 16 is funnel-shaped, with the bottom for collecting settled dust. Three filter bags 12 are provided, equidistantly fixed inside the dust collection box 16. One end of the jet pipe 14 connects to the cavity, and the other end of the jet pipe 14 is inserted into the dust collection box 16 from the top, with three branch pipes located inside the filter bags 12 respectively. The ends of the three jet pipes 14 are fixedly connected to the nozzles 15. The dust collection box 16 is also equipped with an exhaust pipe 18, which allows the dust-removed gas to be discharged to the outside without pollution.

[0041] As attached Figure 4 , Figure 5 As shown:

[0042] The blocking block 3 consists of a long rod, a left baffle, and a right baffle. The width of the long rod is smaller than the width of the opening 7. The left baffle is located outside the intake pipe 5, and the right baffle is located inside the intake pipe 5. Both the left and right baffles are wider than the opening 7, thus blocking the opening 7. Figure 4 In this state, since the pressure plate does not squeeze the outer shell 2 of the drying chamber, the left and right baffles maintain a certain distance from the inner and outer walls of the air inlet pipe 5, so that the inner shell 1 and the outer shell 2 of the drying chamber are connected.

[0043] When the pressure plate 8 squeezes the outer shell 2 of the drying chamber, the left baffle abuts against the outer wall of the air inlet pipe 5, causing the outer shell 2 of the drying chamber and the inner shell 1 of the drying chamber to disconnect. The pressure plate continues to squeeze, increasing the pressure on the outer shell 2 of the drying chamber, which leads to an increase in the pressure inside the cavity. When the pressure value is reached, the pressure valve 13 opens, and the gas is ejected from the nozzle 15 of the jet pipe 14.

[0044] When the pressure plate 8 retracts, the pressure inside the drying chamber 1 becomes high, causing the blocking block 3 to push back. The right baffle blocks the inner wall of the air inlet pipe 5, preventing dust from flowing back into the drying chamber outer shell 2, thus avoiding resource waste and cleaning problems.

[0045] As attached Figure 3 As shown:

[0046] This solution provides a functional ceramics production process, including the following steps:

[0047] S10: After obtaining the clay from the production site, pour all the clay into a wet ball mill, then add a dispersant, using dispersant LY-9350, and then start the wet ball mill to obtain a slurry.

[0048] S20: The obtained slurry is dried by a dryer, and then the slurry is screened on a 100-mesh sieve 10 to obtain powder.

[0049] S30: After sieving, add a modifier to the powder. The modifier is 0.8-1.2 parts butadiene rubber. Then put it into a mixer and add 0.3-1.5 parts water to the mixer. Then start the mixer to stir and get the raw slurry.

[0050] S40: The obtained pulp is fed into the drying mechanism through the feed pipe 17 and the feed pump for drying. The heating blower mechanism is started to blow the filtered hot air into the outer shell 2 and inner shell of the drying chamber through the air inlet pipe 5, so that the drying chamber is uniformly at a certain temperature. At the same time, hot air is also circulated in the cavity to prevent the drying effect from being poor due to the low temperature of the outside temperature, resulting in a large amount of adhesion and reduced efficiency.

[0051] The mixed slurry is pumped into the feed pipe 17 and then sprayed out from the atomizing nozzle 6 to form a water mist. When the water mist is sprayed out, it comes into contact with the hot air in the drying chamber and is immediately dried to form spherical powder that falls naturally. The spherical powder falls onto the screen 10, where it is screened to ensure that only powder of the appropriate size falls to the bottom of the drying chamber.

[0052] Lighter powders are carried out by air through the exhaust pipe 11, which is connected to the dust removal mechanism. The dust-laden air enters the dust collection box 16 and passes through the cloth bag 12. The dust adheres to the cloth bag 12 inside the dust collection box 16 and then falls to the bottom of the dust collection box 16 by gravity. The dust-removed air is then discharged to the outside to prevent dust pollution in the factory.

[0053] When the filter bag 12 is blocked, the pressure at the outlet pipe 11 increases due to the blockage. The pressure sensor detects the increased pressure and triggers the hydraulic cylinder 9 to start. The hydraulic rod of the hydraulic cylinder 9 moves forward, pushing the pressure plate 8 to move. The pressure plate 8 squeezes the drying chamber shell 2, the blocking block 3 moves, and the left baffle abuts against the outer wall of the air inlet pipe 5, causing the drying chamber shell 2 and the inner shell 1 of the drying chamber to disconnect. The pressure plate continues to squeeze, increasing the pressure on the drying chamber shell 2, which in turn increases the pressure inside the cavity. When a certain pressure is reached, the pressure valve 13 opens, and gas is ejected from the nozzle 15 of the jet pipe 14.

[0054] The nozzle 15 is located inside the filter bag 12. High-pressure gas sprays off the dust adhering to the filter bag 12, and then the dust falls to the bottom of the dust collection box 16 by gravity. When the filter bag 12 becomes clogged again, the pressure sensor will not be triggered, the hydraulic rod will move back, the pressure rod will be retracted, the outer shell 2 of the drying box will return to its original state, and the drying box will continue to operate. This mechanism achieves the effect of preventing the filter bag 12 from becoming clogged.

[0055] Finally, a high-strength, high-performance refined powder is obtained from the bottom of the drying chamber.

[0056] S50: The refined powder is poured into a high-pressure vessel. Utilizing the incompressible nature of liquid media and their ability to uniformly transmit pressure, the sample is uniformly pressurized from all directions. When the liquid media is injected into the pressure vessel through a pressure pump, according to fluid mechanics principles, its pressure remains constant and is uniformly transmitted in all directions. At this point, the powder in the high-pressure vessel experiences uniform and consistent pressure in all directions. This ultimately yields a preliminary sample.

[0057] S60: Take out the initial blank and put it back into the drying oven to dry. After the initial blank is dried, the blank is obtained. Then, the blank is put into the kiln for firing and then cooled to finally obtain the desired ceramic.

[0058] The above descriptions are merely embodiments of the present invention, and common knowledge regarding specific structures and characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of the present invention, and these should also be considered within the scope of protection of the present invention. These modifications will not affect the effectiveness of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A functional ceramics production apparatus, comprising a feeding device, a ball milling device, a drying device, a stirring device, a granulation device, a molding device, and a firing device, wherein the above devices are connected in sequence, and the granulation device includes a heating blower mechanism, characterized in that, The granulation device also includes a drying mechanism, and the heating blower mechanism is connected to the drying mechanism; The drying mechanism includes an inner shell of the drying chamber, an outer shell of the drying chamber, and a lid. The outer shell of the drying chamber is coaxially fixed with the inner shell of the drying chamber, and the diameter of the outer shell of the drying chamber is larger than that of the inner shell of the drying chamber. The lid of the drying chamber is fixedly connected to the outer shell of the drying chamber to form a cavity. The heating and blowing mechanism is connected to the inner shell of the drying chamber through an air inlet pipe. The air inlet pipe has an opening that connects to the cavity. The feeding device is connected to the lid of the drying chamber through a feeding pipe. The inner shell of the drying chamber is provided with an air outlet pipe, and the feeding pipe is provided with an atomizing nozzle. It also includes a dust removal mechanism, which includes a cleaning section and a dust removal section. The dust removal section includes a dust removal box, which is connected to the inner shell of the drying box through an exhaust pipe. The dust removal box is provided with an exhaust pipe, and a cloth bag is provided between the exhaust pipe and the exhaust pipe. The exhaust pipe cooperates with the cloth bag, and the cloth bag is fixedly connected to the dust removal box. The cleaning section includes an air jet pipe and a hydraulic cylinder. The outer shell of the drying chamber has a flexible section, and the hydraulic cylinder cooperates with the flexible section of the drying chamber outer shell. One end of the air jet pipe is connected to the cavity, and the other end is connected to the dust collection box and is located inside the filter bag. The air jet pipe is equipped with a pressure valve. The outer shell of the drying chamber is equipped with a blocking block for blocking the opening, and the blocking block cooperates with the opening. The hydraulic cylinder is fixed on the frame, and a pressure plate is fixed on the hydraulic rod of the hydraulic cylinder. The blocking block structure consists of a long rod, a left baffle, and a right baffle. The width of the long rod is smaller than the width of the opening. The left baffle is located outside the intake pipe, and the right baffle is located inside the intake pipe. The widths of both the left and right baffles are greater than the width of the opening, thus blocking the opening.

2. The functional ceramics production apparatus according to claim 1, characterized in that, The jet pipe is equipped with a nozzle.

3. The functional ceramics production apparatus according to claim 2, characterized in that, The bag, air jet pipe and nozzle are provided in three units, and are distributed at equal intervals.

4. The functional ceramics production apparatus according to claim 1, characterized in that, A pressure sensor is installed on the air outlet pipe, and a one-way valve is installed on the air outlet pipe. The pressure sensor is electrically connected to the hydraulic cylinder.

5. The functional ceramics production apparatus according to claim 1, characterized in that, The bottom of the inner shell of the drying oven is equipped with a screen.

6. The functional ceramics production apparatus according to claim 1, characterized in that, An air filter is provided on the air inlet pipe of the heating blower mechanism.

7. The functional ceramics production apparatus according to claim 1, characterized in that, It also includes a pressure plate, which is fixedly connected to a hydraulic cylinder and is parallel to the outer shell of the drying oven.

8. A method for producing functional ceramics, referring to the functional ceramics production apparatus as described in claim 1, characterized in that, Includes the following steps: S10: Pour the clay into a wet ball mill, add the dispersant, and then start the wet ball mill to obtain a slurry; S20: The obtained slurry is dried by a dryer to obtain powder; S30: Add modifier to powder, put it into a mixer, add water to the mixer, and then start the mixer to mix to obtain raw slurry; S40: The obtained pulp is sent into the drying mechanism for drying, and then dust is removed. Finally, a high-strength and high-performance fine powder is obtained from the bottom of the drying box. S50: Pour the refined powder into a high-pressure container and obtain a preliminary blank through static pressing; S60: The initial blank is taken out and put back into the drying oven for drying. Then the blank is put into the kiln for firing, and finally the desired ceramic is obtained.

9. A method for producing functional ceramics according to claim 8, characterized in that, In step S20, the obtained powder needs to be screened on a 100-mesh sieve.

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