An organic solvent heating and decomposing device for ceramic ink

Abstract

The present invention discloses an organic solvent heating and decomposing device for ceramic ink, which includes two support plates symmetrically arranged on both sides of a conveying roller path respectively, a cross beam arranged between the two support plates, a nozzle arranged on the cross beam, a gas supply device for supplying gas to the nozzle, and an ignition mechanism; a plurality of gas ejection holes facing the conveying roller path are formed on the nozzle. The gas supply device supplies gas to the nozzle, the gas is ejected from the gas ejection holes, and after the gas is ignited by the ignition mechanism, a flame is formed. The flames ejected from the plurality of gas ejection holes form a continuous fire curtain. When the brick blank passes through the fire curtain during transportation to the next process through the conveying roller path after inkjet printing, the flame burns and heats the organic solvent on the surface of the brick blank, so that most of the organic solvent is heated and decomposed, thereby destroying the oil film on the brick surface, ensuring the fluidity of the transparent glaze during glazing, reducing the occurrence of the production defect of glaze shrinkage, and improving the qualified rate of fired tiles.

Description

Technical Field

[0001] The present invention relates to the technical field of tile production, and particularly to an organic solvent heating and decomposition device for ceramic ink. Background Art

[0002] Inkjet tiles are a type of tile that uses inkjet printing technology. Compared with traditional tiles, they can print more complex and delicate patterns, making the tiles more beautiful.

[0003] In the production process of inkjet tiles, after the brick blank is glazed, inkjet printing is performed on the brick surface. The ceramic ink in ceramic inkjet mainly includes colorants and organic solvents. The organic solvents are oily. When the gray scale of the designed pattern is large, an oil film will form on the brick surface. Before entering the kiln for firing, a layer of transparent glaze is also applied to the brick surface. Since the transparent glaze is water-based, the oil film hinders the fluidity of the transparent glaze, and the parts where the transparent glaze cannot flow will cause the shrinkage glaze defect.

[0004] It can be seen that the existing technology still needs to be improved. Summary of the Invention

[0005] In view of the deficiencies of the above-mentioned existing technology, the purpose of the present invention is to provide an organic solvent heating and decomposition device for ceramic ink, aiming to heat and volatilize the organic solvent, destroy the oil film formed by the organic solvent, and reduce the occurrence of the production defect of shrinkage glaze.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] An organic solvent heating and decomposition device for ceramic ink includes two support plates symmetrically arranged on both sides of a conveying roller path, a cross beam arranged between the two support plates, a spray pipe arranged on the cross beam, a gas supply device for supplying gas to the spray pipe, and an ignition mechanism; a plurality of spray holes facing the conveying roller path are opened on the spray pipe, and the ignition mechanism is used to ignite the gas ejected from the spray holes.

[0008] The ignition mechanism includes a sliding table electric cylinder arranged at the bottom of the cross beam and a pulse igniter arranged on the sliding table electric cylinder. The sliding table electric cylinder is used to drive the pulse igniter to reciprocate in the direction where the spray holes are located, and the pulse igniter is used to ignite the gas ejected from the spray pipe.

[0009] The organic solvent heating and decomposition device for ceramic ink further includes a brick blank induction mechanism and a burning control mechanism. The brick blank induction mechanism includes a support arm arranged in front of the cross beam and an induction probe arranged on the support arm. The induction probe is used to detect the brick blank on the conveying roller path. The burning control mechanism includes a controller and a solenoid valve. The solenoid valve is arranged on the gas pipeline and is used to control the on-off of the gas transmission in the gas pipeline. The induction probe, the solenoid valve, the sliding table electric cylinder, and the pulse igniter are all electrically connected to the controller.

[0010] The nozzle is arranged parallel to the cross beam and located on the lower side of the cross beam. The nozzle is connected to the cross beam through a lateral guiding component. The lateral guiding component includes a sliding seat slidably arranged on the side surface of the cross beam and a supporting member for supporting both ends of the nozzle.

[0011] A guide rail is arranged on the side surface of the cross beam. A chute is formed on the side surface of the sliding seat facing the cross beam, and the sliding seat is slidably connected to the guide rail through the chute.

[0012] There are two supporting members, which respectively support both ends of the nozzle. Each supporting member includes a mounting vertical plate and a ring arranged at the bottom end of the mounting vertical plate. The mounting vertical plate is connected to the cross beam by screws, and the ring is in interference fit with the nozzle.

[0013] The outlet of the gas spraying hole is vertically downward. All the gas spraying holes are arranged at equal intervals along the length direction of the nozzle, and the size of each gas spraying hole is the same.

[0014] One end of the nozzle is closed, and the other end is set as the air inlet end. An adjusting valve is arranged at the air inlet end of the nozzle. The gas supply device includes a gas supply pipe arranged on the top of the cross beam and a gas source connected to the gas supply pipe. A plurality of switch valves are arranged on the gas supply pipe, and each switch valve is connected to the corresponding adjusting valve through a gas transmission pipe.

[0015] Both ends of the cross beam are respectively connected to two lifting seats. The two lifting seats are driven by a lifting mechanism to realize synchronous lifting. The lifting mechanism includes two screw lifters. The lifter bodies of the two screw lifters are respectively fixed on two support plates. The screws of the two screw lifters are arranged vertically. Their screw nuts are respectively fixedly connected to the two lifting seats. A connecting shaft is connected between the input rotating shafts of the two screw lifters.

[0016] The support plate is L-shaped and includes a bottom plate and a vertical plate perpendicular to each other. Two vertical tracks are arranged on the outer side surface of the vertical plate. Corresponding guiding chutes are arranged on the lifting seat and are slidably connected to the tracks through the guiding chutes.

[0017] Beneficial effects:

[0018] The present invention provides an organic solvent heating and decomposing device. The gas supply device conveys gas to the nozzle, and the gas sprays out from the gas spraying holes. After the gas is ignited by the ignition mechanism, a flame is formed. The flames sprayed out from multiple gas spraying holes form a continuous fire curtain. When the brick blank passes through the fire curtain after inkjet printing and is transported to the next process by the conveying roller path, the flame burns and heats the organic solvent on the surface of the brick blank, so that most of the organic solvents are heated and decomposed, thereby destroying the oil film on the brick surface, ensuring the fluidity of the transparent glaze during glazing, reducing the occurrence of the production defect of glaze shrinkage, and improving the qualified rate of tile firing. Brief Description of the Drawings

[0019] Figure 1 This is a perspective view of the organic solvent heating decomposition device provided by the present invention.

[0020] Figure 2 It is Figure 1 a partial enlarged view of area M in

[0021] Figure 3 This is a perspective view of the lifting mechanism in the organic solvent heating decomposition device provided by the present invention.

[0022] Figure 4 This is a perspective view of the supporting member in the organic solvent heating decomposition device provided by the present invention.

[0023] Figure 5 This is a perspective view of the nozzle in the organic solvent heating decomposition device provided by the present invention. Detailed Description of the Preferred Embodiments

[0024] The present invention provides an organic solvent heating decomposition device for ceramic ink. To make the objectives, technical solutions and effects of the present invention clearer and more definite, the following further describes the present invention in detail with reference to the accompanying drawings and by way of examples. It should be understood that the specific examples described herein are only for explaining the present invention and are not used to limit the protection scope of the present invention.

[0025] Please refer to Figures 1 - 3 , the present invention provides an organic solvent heating decomposition device for ceramic ink, including two support plates 1 symmetrically arranged on both sides of the conveying roller path, a cross beam 2 arranged between the two support plates, a nozzle 3 arranged on the cross beam, a gas supply device 4 for supplying gas to the nozzle, and an ignition mechanism 5; a plurality of gas spray holes 31 facing the conveying roller path are formed on the nozzle 3, and the ignition mechanism 5 is used to ignite the gas ejected from the gas spray holes.

[0026] During operation, the gas supply device supplies gas to the nozzle, the gas is ejected from the gas spray holes 31, and the gas forms a flame after being ignited by the ignition mechanism. The flames ejected from the plurality of gas spray holes 31 form a continuous fire curtain. When the brick blank B passes through the fire curtain during transportation to the next process through the conveying roller path A after inkjet printing, the flame burns and heats the organic solvent on the surface of the brick blank, so that most of the organic solvents are heated and decomposed, thereby destroying the oil film on the brick surface, ensuring the fluidity of the transparent glaze during glazing, reducing the occurrence of the production defect of glaze shrinkage, and improving the qualified rate of fired tiles.

[0027] It should be noted that the colorant in the ceramic ink is inorganic and can withstand high temperatures above 1200 °C, while the organic solvent will volatilize at a temperature of 300 °C. In this embodiment, water gas is used as the gas source, and the flame temperature generated by the combustion of water gas is about 900 °C. Therefore, the flame temperature is sufficient to heat and decompose the organic solvent, but it will not affect the quality of the colorant.

[0028] Specifically, please refer to Figure 2 , one end of the nozzle is closed, and the other end is set as the air inlet end 32. An adjusting valve 81 is provided at the air inlet end of the nozzle. The gas supply device 4 includes a gas supply pipe 41 arranged on the top of the cross beam 2 and a gas source 42 connected to the gas supply pipe. A plurality of switch valves 82 are provided on the gas supply pipe, and each switch valve 82 is connected to the corresponding adjusting valve 81 through a gas transmission pipe 83. By controlling the adjusting valve, the air output of the air injection holes can be adjusted, so as to control the flame burning effect. On the premise of ensuring the heating and decomposition effect of the organic solvent, the air output of the air injection holes is minimized as much as possible to reduce energy consumption. When the heating and decomposition work of the organic solvent is completed, the switch valve is closed to prevent gas leakage and improve safety.

[0029] Specifically, please refer to Figure 2 , the ignition mechanism 5 includes a slide table electric cylinder 51 arranged at the bottom of the cross beam and a pulse igniter 52 arranged on the slide table electric cylinder. The slide table electric cylinder 51 is used to drive the pulse igniter 52 to reciprocate in the direction where the air injection hole 31 is located, and the pulse igniter 52 is used to ignite the gas ejected from the nozzle. During ignition, the slide table electric cylinder 51 is used to drive the pulse igniter 52 to reciprocate in the direction where the air injection hole 31 is located, and the pulse igniter 52 is used to ignite the gas ejected from the nozzle, realizing the automatic ignition function and improving the convenience and safety of gas ignition. During actual ignition, the staff controls the slide on the slide table electric cylinder through the drive switch to drive the pulse igniter to approach the air injection hole of the nozzle, and then controls the pulse igniter to ignite through the ignition switch. The ignition needle generates a high-voltage spark to ignite the gas ejected from the air injection hole, realizing automatic ignition. The pulse igniter can be purchased from the market, such as the DHQ pulse igniter of Shuangjin Ventilation.

[0030] As a preferred solution, please refer to Figure 1 and Figure 2The organic solvent heating decomposition device for ceramic ink also includes a brick blank sensing mechanism 6 and a burning control mechanism. The brick blank sensing mechanism 6 includes a support arm 6a arranged on the front side of the crossbeam and a sensing probe 6b arranged on the support arm. The sensing probe 6a is used to detect the brick blanks on the conveying roller. The burning control mechanism includes a controller (not shown in the figure), a solenoid valve 7, and the solenoid valve 71 is arranged on the gas pipe 83, which is used to control the gas supply on and off of the gas pipe 83. The sensing probe 6b, the solenoid valve 7, the slide cylinder 51, and the pulse igniter 52 are all electrically connected to the controller. The sensing probe 6b is a photoelectric sensor. When a brick blank passes between the photoelectric sensor and the conveying roller, the brick blank blocks the light emitted by the photoelectric sensor, so that the photoelectric sensor will feedback a signal to the controller. The photoelectric detection is sensitive and will not damage the brick blank.

[0031] In order to further reduce energy loss and avoid the situation that the conveying roller does not convey the bricks for a long time while the gas in the organic solvent heating decomposition device of ceramic ink is still in a burning state, the organic solvent heating decomposition device of ceramic ink is automatically started and stopped. When the induction probe detects the bricks, the induction probe feeds back a signal to the controller, indicating that the bricks are moving toward the nozzle. At this time, the controller controls the slide of the slide electric cylinder 51 to drive the pulse igniter 52 close to the jet hole 31 of the nozzle. At the same time, the controller controls the solenoid valve 7 to open, and the gas is ejected from the jet hole 31. Then the pulse igniter 52 ignites the gas, and then the slide of the slide electric cylinder 51 drives the pulse igniter 52 to reset. When the induction probe 6b does not feed back a signal to the controller within a preset time (there is a counting module in the controller), the controller controls the solenoid valve to close, thereby interrupting the flame-spraying and burning state of the organic solvent heating decomposition device of ceramic ink, so as to achieve the purpose of energy loss. When the induction probe detects the bricks, the flame-spraying and burning state is restored. The controller is preferably a PLC controller.

[0032] For details, please refer to Figure 2 The nozzle 3 is arranged parallel to the cross beam 2 and is located at the lower side of the cross beam. The nozzle is connected to the cross beam through a transverse guide assembly 9. The transverse guide assembly 9 includes a slide seat 91 slidably arranged on the side of the cross beam, and a support member 92 for supporting both ends of the nozzle. The support member 92 is connected to the slide seat 91. By pushing the slide seat 91, the transverse position of the nozzle 3 can be changed, so that the user can adjust the position of the nozzle according to the actual position of the brick blank to ensure that all longitudinal parts of the brick blank can be burned by the fire curtain.

[0033] Furthermore, a guide rail 73 is provided on the side of the crossbeam, and a slide groove (not shown in the figure) is provided on the side of the slide seat facing the crossbeam and is slidably connected to the guide rail through the slide groove. The slide groove is adapted to the shape of the guide rail, and the slide groove is set to a shape that cannot be separated from the guide rail, so that the slide seat slides smoothly and steadily.

[0034] Preferably, see Figure 1 and Figure 4 , there are two supporting members 92, which respectively support the two ends of the nozzle 3. Each supporting member 92 includes a mounting vertical plate 92a and a circular ring 92b arranged at the bottom end of the mounting vertical plate; the mounting vertical plate 92a is connected with the crossbeam screw, and the circular ring 92b is interference fit with the nozzle 3, and the nozzle 3 will not separate from the circular ring 92b. The circular ring 92b can radially position the nozzle 3 to prevent the nozzle from self-rotating during operation. Here, the mounting vertical plate and the circular ring are integrally formed. In order to prevent the supporting member from transferring the heat of the nozzle to the slide seat and affecting the performance of the slide seat, the mounting vertical plate and the circular ring are made of plastic with high temperature resistance, flame retardancy and low thermal conductivity.

[0035] Preferably, see Figure 5 The outlet of the jet hole 31 is vertically downward, and all the jet holes are arranged equidistantly along the length direction of the nozzle, and each jet hole has the same size. In actual setting, the distance between two adjacent jet holes is small, so that the gas ejected from the jet hole can form a flame curtain after ignition, reducing the burning dead angle and achieving a good burning and impurity removal effect.

[0036] Preferably, see Figure 1 and Figure 3 The two ends of the crossbeam are connected to two lifting seats 10 respectively, and the two lifting seats 10 are driven by a lifting mechanism 11 to achieve synchronous lifting; the lifting mechanism 11 includes two screw lifters 11a, the lifter bodies 11a of the two screw lifters are fixed on the two support plates 1 respectively, the screws 11b of the two screw lifters are vertically arranged, and their screw nuts 11c are fixedly connected to the two lifting seats 10 respectively, and a connecting shaft 11d is connected between the input shafts of the two screw lifters, and the input shaft and the connecting shaft 11d are connected by a coupling. When processing different tiles, the thickness of the brick blank will change, and the lifting mechanism 11 can be used to drive the two lifting seats 10 to rise and fall synchronously, so as to ensure that the heights of the two ends of the nozzle are always consistent, thereby ensuring the heating and decomposition effect of the organic solvent on the brick surface.

[0037] When the input shaft of one of the screw lifters is driven to rotate, the input shaft of the other screw lifter will rotate synchronously under the drive of the connecting shaft, so that the two screw nuts are lifted synchronously, and then the two lifting seats are lifted synchronously. In this embodiment, a hand wheel 11e is set on the input shaft of one of the screw lifters, and the height of the nozzle can be accurately adjusted by turning the hand wheel.

[0038] It should be noted that the screw lifter is an existing technology and can be purchased directly from the market. It mainly includes a lifter body 11a, a screw 11b and a screw nut 11c. A meshing worm wheel and worm are arranged in the lifter body. The worm is the input shaft, and the worm wheel is connected to the screw for transmission.

[0039] Preferably, refer to Figure 3 , the support plate 1 is L-shaped, including a bottom plate 1a and a vertical plate 1b that are perpendicular to each other. Two vertical tracks 12a are provided on the outer side of the vertical plate. Corresponding guiding chutes 12b are provided on the lifting seat and are slidably connected to the tracks 12a through the guiding chutes. By setting it in this way, it is ensured that the moving direction of the lifting seat is accurate and the lifting seat is prevented from shaking. Preferably, the cross-section of the track is an equilateral trapezoid, and the short-side is connected to the support plate. The cross-section of the guiding chute is the same as that of the track, which can prevent derailment.

[0040] In order to improve the conveying efficiency, in this embodiment, the conveying roller path A is designed to be able to convey two green bricks B at the same time, that is, the length of the conveying roller is greater than the width of two green bricks. Therefore, two sets of lateral guiding components and nozzles are provided and are respectively located on the front side and the rear side of the cross beam. The two nozzles respectively heat and decompose the organic solvent in the ceramic ink on the brick surface passing under them without interfering with each other.

[0041] In the actual production process, the speed of the conveying roller path will affect the overall production efficiency and quality of the ceramic tiles and generally cannot be adjusted. Therefore, the user can add an organic solvent heating and decomposing device according to the actual heating and decomposing effect of the organic solvent.

[0042] It can be understood that for those of ordinary skill in the art, equivalent substitutions or changes can be made according to the technical solution of the present invention and its inventive concept, and all such changes or substitutions should fall within the protection scope of the present invention.

Claims

1. An organic solvent heating and decomposing device for ceramic ink, characterized in that, It includes two support plates symmetrically arranged on both sides of the conveying roller path respectively, a cross beam arranged between the two support plates, a nozzle arranged on the cross beam, a gas supply device for supplying gas to the nozzle, and an ignition mechanism; a plurality of gas spraying holes facing the conveying roller path are opened on the nozzle, and the ignition mechanism is used to ignite the gas sprayed out from the gas spraying holes; the ignition mechanism includes a slide electric cylinder arranged at the bottom of the cross beam and a pulse igniter arranged on the slide electric cylinder, the slide electric cylinder is used to drive the pulse igniter to reciprocate in the direction where the gas spraying holes are located, and the pulse igniter is used to ignite the gas sprayed out from the nozzle; one end of the nozzle is closed, and the other end is set as the air inlet end, and an adjusting valve is arranged at the air inlet end of the nozzle, the gas supply device includes a gas supply pipe arranged at the top of the cross beam and a gas source connected to the gas supply pipe, a plurality of switch valves are arranged on the gas supply pipe, and each switch valve is connected to the corresponding adjusting valve through a gas transmission pipe; it also includes a brick blank induction mechanism and a burning control mechanism, the brick blank induction mechanism includes a support arm arranged at the front side of the cross beam and an induction probe arranged on the support arm, and the induction probe is used to detect the brick blanks on the conveying roller path, the burning control mechanism includes a controller and a solenoid valve, the solenoid valve is arranged on the gas transmission pipe and is used to control the on-off of the gas transmission in the gas transmission pipe, and the induction probe, the solenoid valve, the slide electric cylinder, and the pulse igniter are all electrically connected to the controller; the gas source is water gas; the nozzle is arranged parallel to the cross beam and is located below the cross beam, and the nozzle is connected to the cross beam through a lateral guiding component, and the lateral guiding component includes a sliding seat slidably arranged on the side surface of the cross beam and a supporting member for supporting both ends of the nozzle.

2. The organic solvent thermal decomposition device for the ceramic ink according to claim 1, characterized in that A guide rail is arranged on the side surface of the cross beam, and a chute is opened on the side surface of the sliding seat facing the cross beam and is slidably connected to the guide rail through the chute.

3. The organic solvent heating and decomposing device for the ceramic ink according to claim 1, wherein, There are two supporting members, which respectively support both ends of the nozzle. Each supporting member includes a mounting vertical plate and a circular ring arranged at the bottom end of the mounting vertical plate; the mounting vertical plate is connected to the cross beam by screws, and the circular ring is in interference fit with the nozzle.

4. The organic solvent heating and decomposing device for the ceramic ink according to claim 1, wherein, The outlet of the gas spraying hole is vertically downward, and all the gas spraying holes are arranged at equal intervals along the length direction of the nozzle, and the size of each gas spraying hole is the same.

5. The organic solvent heating and decomposing device for ceramic ink according to claim 1, characterized in that, Both ends of the cross beam are respectively connected to two lifting seats, and the two lifting seats are driven by a lifting mechanism to achieve synchronous lifting; the lifting mechanism includes two screw lifters, the lifter bodies of the two screw lifters are respectively fixed on the two support plates, the screws of the two screw lifters are arranged vertically, and their screw nuts are respectively fixed to the two lifting seats, and a connecting shaft is connected between the input rotating shafts of the two screw lifters.

6. The organic solvent heating and decomposition device for the ceramic ink according to claim 5, wherein The support plate is L-shaped and includes a bottom plate and a vertical plate that are perpendicular to each other. Two vertical tracks are arranged on the outer side surface of the vertical plate, and corresponding guiding chutes are arranged on the lifting seat and are slidably connected to the tracks through the guiding chutes.

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