Colorful velvety ceramic tile double digital inkjet production system

Abstract

The present application relates to the technical field of ceramic tile production, and discloses a two-pass digital inkjet production system for color velvet ceramic tiles, which comprises two sets of conveying frames, a conveying belt for conveying ceramic tile blanks is arranged on the conveying frames, and glaze spraying devices and inkjet machines are arranged on the front and rear sides of the conveying frames respectively; the glaze spraying device comprises a mounting frame, a glaze spraying tank mounted on the top of the mounting frame, a glaze spraying bell jar mounted in the mounting frame, an annular seat arranged on the top of the glaze spraying bell jar, and a filter temperature regulating assembly centrally arranged in the annular seat. The opening size of the glaze rubber baffle can be accurately adjusted by the pressing assembly, different specifications of ceramic tile blanks can be adapted, and glaze spraying waste can be reduced. The filter temperature regulating assembly integrates a filter element and an electric heating wire, can synchronously realize glaze filtering and impurity removal and temperature regulation, avoids channel blockage and uneven glaze spraying, and guarantees the velvet texture and surface consistency of the product. The present application has a reasonable structure and can meet the development needs of high efficiency and high quality of the ceramic tile industry.

Description

Technical Field

[0001] This invention relates to the field of ceramic tile production technology, specifically to a two-stage digital inkjet production system for colored velvet-like ceramic tiles. Background Technology

[0002] Existing two-stage digital inkjet production systems for colored velvet-textured ceramic tiles lack adaptability to various tile sizes, making it difficult to adjust the glaze application range. This results in most of the glaze falling from the upper surface of the glazing bell failing to reach the tile surface, leading to glaze waste and poor fluidity after heat dissipation. Furthermore, these systems generally lack precise glaze control mechanisms, making it difficult to uniformly control glaze temperature and filtration accuracy, easily causing channel blockage or uneven glazing, directly affecting the velvet texture and surface consistency of the product. Simultaneously, the glaze recycling in these systems does not achieve a closed-loop cycle, resulting in glaze waste. These limitations restrict production efficiency and fail to meet the high-efficiency, high-quality development demands of the ceramic tile industry. Therefore, we propose a two-stage digital inkjet production system for colored velvet-textured ceramic tiles. Summary of the Invention

[0003] The purpose of this invention is to provide a two-stage digital inkjet production system for colored velvet ceramic tiles to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: A two-stage digital inkjet production system for colored velvet ceramic tiles includes two sets of conveyor frames connected by an intermediate conveyor belt. Each conveyor frame is equipped with a transport conveyor belt for conveying ceramic tile blanks. A glazing device and an inkjet printer are respectively installed on the front and rear sides of the conveyor frame. The glazing device includes a mounting frame, a glazing tank mounted on top of the mounting frame, a glazing bell jar mounted inside the mounting frame, an annular seat on top of the glazing bell jar, and a filter and temperature control assembly located centrally inside the annular seat. The bottom of the glazing tank is connected to the top of the filtration and temperature control assembly, which is used to filter and control the temperature of the glaze liquid. The upper end of the glazed bell jar is also provided with a glaze rubber baffle. Two sets of toggle and pressing components are slidably connected to the outside of the filter and temperature control component. The toggle components are used to adjust the size of the opening of the glaze rubber baffle and press the glaze rubber baffle onto the upper surface of the glazed bell jar. The mounting frame is also equipped with a glaze recovery system, which is used to recycle the glaze that falls through the surface of the glazing bell jar back to the glazing tank.

[0005] Preferably, the top of both ends of the conveyor frame is provided with an upper rotating shaft, and both ends of the conveyor frame are also provided with a lower rotating shaft located below the upper rotating shaft. The upper rotating shaft is provided with a number of upper drive wheels at equal intervals, and the lower rotating shaft is provided with a number of lower drive wheels at equal intervals. The conveyor belt is connected between two sets of upper drive wheels and two sets of lower drive wheels. The upper end of the conveyor frame is provided with a grid frame, which is located below the top of the conveyor belt.

[0006] Preferably, the bottom of the conveyor frame is provided with support legs, and a motor is installed on the side of the corresponding support leg. The motor is used to drive the lower rotating shaft at the rear.

[0007] Preferably, the intermediate conveyor belt is connected to two sets of upper drive wheels that are close to each other on two sets of conveyor frames.

[0008] The glazing tank is fitted with a connecting ring seat, and sliding seats are symmetrically fixed on both sides of the connecting ring seat, and the sliding seats are slidably connected to the top of the mounting frame; The glazed bell jar is provided with fixing ears on both sides, which are fixed to the inner wall of the mounting frame.

[0009] Preferably, the filter temperature control assembly includes a filter barrel fixed to the top of the glazed bell jar, an end cap screwed to the top of the filter barrel, a filter element supported by several sets of springs inside the filter barrel, and an electric heating wire located inside the springs. The bottom side of the filter barrel is provided with filter holes evenly distributed.

[0010] Preferably, the bottom of the glazing tank is provided with a glazing pipe, the glazing pipe is provided with a valve, the top of the end cap is provided with a connecting pipe, and the bottom of the glazing pipe is inserted into the connecting pipe.

[0011] Preferably, the upper outer side of the filter barrel is provided with an annular guide rail; The actuating and pressing assembly includes a first sliding movable seat and a second sliding movable seat symmetrically slidably connected to an annular guide rail, a synchronization component connecting the first sliding movable seat and the second sliding movable seat, an actuating seat whose outer ends of the first sliding movable seat and the second sliding movable seat are fixed by an extension plate, and a pressing plate connected to the actuating seat. The top of the glaze rubber stop is locked inside the toggle seat.

[0012] Preferably, the synchronization component includes an arc-shaped inner rack fixed at one end of a first sliding movable seat, an arc-shaped outer rack fixed at one end of a second sliding movable seat, and a gear mounted on the outside of the filter barrel using a protruding plate, wherein the gear meshes between the arc-shaped inner rack and the arc-shaped outer rack. The top of the pressing plate is provided with a screw, and a knob is fixed to the top of the screw after passing through the toggle seat.

[0013] Preferably, the glaze recovery system includes an arc-shaped recovery tank fixed to the lower part of the mounting frame, a temporary storage tank installed on the top of the mounting frame, a glaze pump installed on the side of the temporary storage tank, and a circulation pipe connected to the outlet of the glaze pump and the top side of the glazing tank. The bottom of the arc-shaped recycling tank is equipped with an inclined recycling pipe, one end of which extends into the temporary storage tank.

[0014] Compared with existing technologies, the advantages of this invention are as follows: This invention allows for precise adjustment of the opening size of the glaze rubber baffle by adjusting the clamping component, adapting to different tile blanks, reducing glaze waste, and minimizing heat loss; the filtration and temperature control component integrates a filter element and an electric heating wire, simultaneously achieving glaze filtration and temperature control, preventing channel blockage and uneven glazing, ensuring a consistent velvety texture and surface finish, and facilitating filter element replacement; the glaze recovery system forms a closed-loop cycle, recycling the glaze to the glazing tank for reuse, eliminating glaze waste; this invention has a reasonable structure, strong adaptability, and balances efficient production with product quality, meeting the high-efficiency, high-quality development needs of the tile industry. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the entire invention; Figure 2 This is a schematic diagram of the structure of the intermediate conveyor belt and the transport conveyor belt of the present invention; Figure 3 This is a schematic diagram of the structure of the inkjet printer, enamel coating device, and conveyor frame of the present invention. Figure 4 This is a schematic diagram of the structure of the upper and lower transmission wheels of the present invention; Figure 5 This is a schematic diagram of the connection between the upper drive wheel, the lower drive wheel, and the conveyor belt of the present invention; Figure 6 This is a three-dimensional structural diagram of the glazing device of the present invention; Figure 7 For the present invention Figure 7 A schematic diagram of the three-dimensional structure from another perspective; Figure 8 This is a schematic diagram showing the connection between the glazing tank and the filter temperature control assembly of the present invention; Figure 9 This is a schematic diagram of the connection between the pressing assembly and the glaze rubber baffle of the present invention; Figure 10 This is an exploded structural diagram of the end cap, filter barrel, and filter barrel assembly of the present invention. Figure 11 This is a schematic diagram showing the structure of the filter barrel, spring, electric heating wire, and gears of the present invention. Figure 12 This is a schematic diagram showing the connection between the filter temperature control component and the toggle clamping component of the present invention; Figure 13 This is a diagram showing the effect of the colored velvet-like brick of the present invention under light.

[0016] In the diagram: 1. Conveyor frame; 101. Motor; 102. Upper drive wheel; 103. Lower drive wheel; 104. Support leg; 105. Grille frame; 2. Glazing device; 201. Mounting frame; 202. Arc-shaped recovery trough; 203. Glazing bell jar; 204. Filter temperature control assembly; 20401. End cap; 20402. Connecting pipe; 20403. Filter barrel; 20404. First sliding contact moving seat; 20405. Actuating seat; 20406. Filter hole; 20407. Protruding plate; 20408. Arc-shaped external rack; 20409. Arc-shaped internal rack; 20410. Extension plate; 20411. Knob 20412, Pressing plate; 20413, Screw; 20414, Filter element; 20415, Annular guide rail; 20416, Spring; 20417, Electric heating wire; 20418, Second sliding contact moving seat; 20419, Gear; 205, Glazing tank; 206, Glaze rubber baffle; 207, Temporary storage tank; 208, Sleeve ring seat; 209, Slide seat; 210, Annular seat; 211, Circulation pipe; 212, Fixing ear; 213, Glazing pipe; 214, Glaze pump; 215, Inclined recovery pipe; 216, Valve; 3, Inkjet printer; 4, Tile body; 5, Intermediate conveyor belt; 6, Transport conveyor belt. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Example: Please see Figures 1-13 The present invention provides a technical solution: A two-stage digital inkjet production system for colored velvet-like ceramic tiles includes two sets of conveyor frames 1. Each set of conveyor frames 1 has an upper rotating shaft at the top of both ends and a lower rotating shaft at both ends below the upper rotating shaft. The upper rotating shaft has several sets of upper drive wheels 102 at equal intervals, and the lower rotating shaft has several sets of lower drive wheels 103 at equal intervals. An intermediate conveyor belt 5 connects the two sets of conveyor frames 1. The conveyor frames 1 are equipped with a transport conveyor belt 6 for conveying ceramic tile blanks 4. The transport conveyor belt 6 is connected between the two sets of upper drive wheels 102 and the two sets of lower drive wheels 103. A grid frame 105 is provided at the top of the conveyor frame 1, and the grid frame 105 is located below the top of the transport conveyor belt 6.

[0019] The bottom of the conveyor frame 1 is provided with support legs 104, and motors 101 are installed on the sides of the corresponding support legs 104. The motors 101 are used to drive the lower rotating shaft at the rear. The middle conveyor belt 5 is connected to two sets of upper transmission wheels 102 that are close to each other on the two sets of conveyor frames 1. The front and rear sides of the conveyor frame 1 are respectively provided with glazing device 2 and inkjet printer 3. Glazing device 2 includes mounting frame 201, glazing tank 205 installed on the top of mounting frame 201, glazing bell jar 203 installed inside mounting frame 201, annular seat 210 provided on the top of glazing bell jar 203, and filter temperature control component 204 located in the center inside annular seat 210. A connecting ring seat 208 is sleeved on the glazing tank 205. Slide seats 209 are symmetrically fixed on both sides of the connecting ring seat 208. The slide seats 209 slide on the top of mounting frame 201. Fixing ears 212 are provided on both sides of glazing bell jar 203. Fixing ears 212 are fixed to the inner wall of mounting frame 201.

[0020] The bottom of the glazing tank 205 is connected to the top of the filtration and temperature control assembly 204. The filtration and temperature control assembly 204 is used to filter and control the temperature of the glaze liquid. The filtration and temperature control assembly 204 includes a filter barrel 20403 fixed to the top of the glazing bell jar 203, an end cap 20401 screwed to the top of the filter barrel 20403, a filter element 20414 supported by several sets of springs 20416 inside the filter barrel 20403, and an electric heating wire 20417 located inside the springs 20416. Filter holes 20406 are evenly provided on the bottom side of the filter barrel 20403.

[0021] The bottom of the glazing tank 205 is provided with a glazing tube 213, and a valve 216 is provided on the glazing tube 213. The top of the end cap 20401 is provided with a connecting tube 20402, and the bottom of the glazing tube 213 is inserted into the connecting tube 20402.

[0022] When the filter element 20414 needs to be replaced, the end cap 20401 can be removed. At this time, under the elastic force of the spring 20416 on the filter element 20414, the filter element 20414 will extend out of the filter barrel 20403. Then, the old filter element 20414 can be removed and replaced with the new filter element 20414. This makes it easy to quickly replace the filter element 20414.

[0023] The upper end of the glazing bell jar 203 is also provided with a glaze rubber baffle 206. Two sets of actuating and pressing components are slidably connected to the outside of the filter temperature control component 204. The actuating components are used to adjust the size of the opening of the glaze rubber baffle 206 and press the glaze rubber baffle 206 against the upper surface of the glazing bell jar 203. The upper outer side of the filter barrel 20403 is provided with an annular guide rail 20415. The actuating and pressing components include a first sliding movement symmetrically slidably connected to the annular guide rail 20415. The first sliding movable seat 20404 and the second sliding movable seat 20418, the synchronization component connecting the first sliding movable seat 20404 and the second sliding movable seat 20418, the actuating seat 20405 fixed at the outer ends of the first sliding movable seat 20404 and the second sliding movable seat 20418 by the extension plate 20410, and the pressure plate 20412 connected to the actuating seat 20405, with the top of the glaze rubber baffle 206 stuck inside the actuating seat 20405.

[0024] The synchronization assembly includes an arc-shaped internal rack 20409 fixed at one end of the first sliding movable seat 20404, an arc-shaped external rack 20408 fixed at one end of the second sliding movable seat 20418, and a gear 20419 mounted on the outside of the filter barrel 20403 using a protruding plate 20407. The gear 20419 meshes between the arc-shaped internal rack 20409 and the arc-shaped external rack 20408. A screw 20413 is provided on the top of the pressure plate 20412, and a knob 20411 is fixed after the top of the screw 20413 is screwed through the actuating seat 20405.

[0025] The first sliding movable seat 20404 and the second sliding movable seat 20404 slide on the annular guide rail 20415. With the meshing transmission of the arc-shaped inner rack 20409, the arc-shaped outer rack 20408 and the gear 20419, the two sets of actuating seats 20405 can move synchronously in opposite directions, accurately adjusting the opening size of the glaze rubber baffle 206, adapting to different specifications of ceramic tile bodies 4, and having strong versatility. The pressing plate 20412 is connected to the actuating seat 20405 through the screw 20413. Turning the knob 20411 can achieve pressing or releasing, which is convenient to operate and has a stable pressing effect, avoiding glaze overflow and waste. The glaze rubber baffle 206 is stuck inside the actuating seat 20405, with a firm connection, easy to disassemble and replace, and reduced maintenance costs.

[0026] The mounting frame 201 is also equipped with a glaze recovery system, which is used to circulate and recover the glaze that falls through the surface of the glazing bell jar 203 back to the glazing tank 205. The glaze recovery system includes an arc-shaped recovery trough 202 fixed to the lower part of the mounting frame 201, a temporary storage trough 207 installed on the top of the mounting frame 201, a glaze pump 214 installed on the side of the temporary storage trough 207, and a circulation pipe 211 connected to the outlet of the glaze pump 214 and the top side of the glazing tank 205. The bottom of the arc-shaped recovery trough 202 is provided with an inclined recovery pipe 215, one end of which extends into the temporary storage trough 207.

[0027] Specifically, when using it: The core of this invention is used for the two-stage digital inkjet production of colored velvet-like ceramic tiles. Through the coordinated operation of multiple structures, it realizes the continuous conveying, glazing, and inkjet processing of the tile body 4, while simultaneously completing the glaze recycling, ensuring production efficiency and product quality. The specific workflow is as follows: 1. Conveying Start-up: Start the motor 101 on the side of the support leg 104. The motor 101 drives the lower rotating shafts at both ends of the conveyor frame 1 to rotate. The lower rotating shafts drive the lower transmission wheel 103 to rotate, which in turn drives the upper transmission wheel 102 and the conveyor belt 6 to rotate. The middle conveyor belt 5 rotates synchronously with the upper transmission wheel 102, forming a continuous conveying channel. The ceramic tile body 4 is placed on the conveyor belt 6 and completes two glazing and inkjet printing processes in sequence. The grid frame 105 supports the conveyor belt 6 to prevent it from deforming due to the weight of the ceramic tile body 4, ensuring stable conveying.

[0028] 2. Glazing Preparation and Adjustment: The glaze liquid in the glazing tank 205 enters the connecting pipe 20402 of the filter and temperature control assembly 204 through the glazing pipe 213 and valve 216, and flows into the filter barrel 20403. The filter element 20414 inside the filter barrel 20403 filters the glaze liquid, removes impurities, and prevents blockage of the glazing channel; the spring 20416 supports the filter element 20414, buffers the impact of the glaze liquid, and protects the filter element 20414; the electric heating wire 20417 adjusts the temperature of the filtered glaze liquid to ensure that the glaze liquid is in a suitable flow state and to ensure the uniformity of glazing.

[0029] 3. Glazing operation: The filtered and temperature-adjusted glaze flows into the glazing bell jar 203 through the filter hole 20406 at the bottom of the filter barrel 20403, overflows the annular seat 210 and flows down along the upper surface of the glazing bell jar 203, evenly coating the surface of the ceramic tile body 4 conveyed by the conveyor belt 6 below.

[0030] Adjust the opening size of the glaze rubber baffle 206 by turning the clamping assembly: turn the knob 20411 to drive the screw 20413 to rotate, so that the clamping plate 20412 presses the glaze rubber baffle 206 to prevent the glaze from overflowing through the gap between the glaze rubber baffle 206 and the upper surface of the glazing bell jar 203. Pushing the first sliding movable seat 20404 or the second sliding movable seat 20418, the two sets of sliding movable seats move synchronously in opposite directions through the meshing transmission of the arc-shaped inner rack 20409, the arc-shaped outer rack 20408 and the gear 20419. This drives the actuating seat 20405 to adjust the opening of the glaze rubber baffle 206. The glaze falls onto the surface of the ceramic tile body 4 through the opening of the glaze rubber baffle 206 to adapt to ceramic tile bodies 4 of different sizes.

[0031] 4. Glaze recycling: During the glazing process, the glaze that is not coated on the ceramic tile body 4 falls down along the surface of the glazing bell jar 203 and enters the arc-shaped recycling trough 202 at the bottom of the mounting frame 201. It then flows into the temporary storage trough 207 through the inclined recycling pipe 215 for temporary storage. Start the glaze pump 214, and the glaze in the temporary storage tank 207 is transported back to the glazing tank 205 through the circulation pipe 211, so as to realize the recycling of glaze and reduce waste.

[0032] 5. Inkjet printing and second-stage processing: The ceramic tile blank 4, after completing the first glazing process, is digitally inkjet printed by the inkjet printer 3 on the conveyor frame 1. The ceramic tile blank 4 is then conveyed to another set of conveyor frames 1 via the intermediate conveyor belt 5 to complete the second glazing and inkjet printing process, ultimately forming a colored velvet-like ceramic tile. The glazing tank 205 is slidably connected to the top of the mounting frame 201 via the connecting ring seat 208 and the slide seat 209, allowing for flexible adjustment of the position of the glazing tank 205 to adapt to different processing requirements. The inkjet printer 3 is a Xinjingtai K8 model.

[0033] For this two-stage digital inkjet process, after the first glazing is completed, the ink used for the first inkjet print includes six colors, with the dark velvet tile (see instruction manual attached) as the primary color. Figure 13 Taking the example shown, the percentage of the colored ink components in the first inkjet is: blue 24%, brown 22%, yellow 2%, black 20%, orange 10%, and red 22%; the second inkjet prints digital glaze ink, which is nano-sized, and the percentage of its components is: aluminum oxide 4%, silicon oxide 76%, sodium feldspar 15%, and calcium oxide 5%, which can improve the light sensitivity. After completion, a dark velvety ceramic tile is obtained.

[0034] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A color velvet tile double digital inkjet production system, comprising two sets of conveying frames, a middle conveying belt is connected between the two sets of conveying frames, a conveying belt for conveying the tile body is arranged on the conveying frame, characterized in that: The front and rear sides of the conveyor frame are respectively equipped with a glazing device and an inkjet printer; The glazing device includes a mounting frame, a glazing tank mounted on top of the mounting frame, a glazing bell jar mounted inside the mounting frame, an annular seat on top of the glazing bell jar, and a filter and temperature control assembly located centrally inside the annular seat. The bottom of the glazing tank is connected to the top of the filtration and temperature control assembly, which is used to filter and control the temperature of the glaze liquid. The upper end of the glazed bell jar is also provided with a glaze rubber baffle. Two sets of toggle and pressing components are slidably connected to the outside of the filter and temperature control component. The toggle components are used to adjust the size of the opening of the glaze rubber baffle and press the glaze rubber baffle onto the upper surface of the glazed bell jar. The mounting frame is also equipped with a glaze recovery system, which is used to recycle the glaze that falls through the surface of the glazing bell jar back to the glazing tank.

2. The two-stage digital inkjet production system for colored velvet-like ceramic tiles according to claim 1, characterized in that: The top of both ends of the conveyor frame is provided with an upper rotating shaft, and both ends of the conveyor frame are also provided with a lower rotating shaft located below the upper rotating shaft. The upper rotating shaft is provided with several sets of upper transmission wheels at equal intervals, and the lower rotating shaft is provided with several sets of lower transmission wheels at equal intervals. The conveyor belt is connected between two sets of upper drive wheels and two sets of lower drive wheels. The upper end of the conveyor frame is provided with a grid frame, which is located below the top of the conveyor belt.

3. The two-stage digital inkjet production system for colored velvet-like ceramic tiles according to claim 2, characterized in that: The bottom of the conveyor frame is equipped with support legs, and a motor is installed on the side of the corresponding support leg. The motor is used to drive the lower rotating shaft at the rear.

4. The two-stage digital inkjet production system for colored velvet-like ceramic tiles according to claim 2, characterized in that: The intermediate conveyor belt is connected to two sets of upper drive wheels that are close to each other on two sets of conveyor frames.

5. The two-stage digital inkjet production system for colored velvet-like ceramic tiles according to claim 1, characterized in that: The glazing tank is fitted with a connecting ring seat, and sliding seats are symmetrically fixed on both sides of the connecting ring seat, and the sliding seats are slidably connected to the top of the mounting frame; The glazed bell jar is provided with fixing ears on both sides, which are fixed to the inner wall of the mounting frame.

6. The two-stage digital inkjet production system for colored velvet-like ceramic tiles according to claim 1, characterized in that: The filtration and temperature control assembly includes a filter barrel fixed to the top of the glazed bell jar, an end cap screwed to the top of the filter barrel, a filter element supported by several sets of springs inside the filter barrel, and an electric heating wire located inside the springs. The bottom side of the filter barrel is provided with filter holes evenly distributed.

7. The two-stage digital inkjet production system for colored velvet-like ceramic tiles according to claim 6, characterized in that: The bottom of the glazing tank is equipped with a glazing pipe, and a valve is provided on the glazing pipe. The top of the end cap is equipped with a connecting pipe, and the bottom of the glazing pipe is inserted into the connecting pipe.

8. The two-stage digital inkjet production system for colored velvet-like ceramic tiles according to claim 6, characterized in that: The upper outer side of the filter barrel is provided with an annular guide rail; The actuating and pressing assembly includes a first sliding movable seat and a second sliding movable seat symmetrically slidably connected to an annular guide rail, a synchronization component connecting the first sliding movable seat and the second sliding movable seat, an actuating seat whose outer ends of the first sliding movable seat and the second sliding movable seat are fixed by an extension plate, and a pressing plate connected to the actuating seat. The top of the glaze rubber stop is locked inside the toggle seat.

9. The two-stage digital inkjet production system for colored velvet-like ceramic tiles according to claim 8, characterized in that: The synchronization component includes an arc-shaped inner rack fixed at one end of a first sliding movable seat, an arc-shaped outer rack fixed at one end of a second sliding movable seat, and a gear mounted on the outside of the filter barrel using a protruding plate. The gear meshes between the arc-shaped inner rack and the arc-shaped outer rack. The top of the pressing plate is provided with a screw, and a knob is fixed to the top of the screw after passing through the toggle seat.

10. A two-stage digital inkjet production system for colored velvet-like ceramic tiles according to claim 1, characterized in that: The glaze recovery system includes an arc-shaped recovery tank fixed at the bottom of the mounting frame, a temporary storage tank installed at the top of the mounting frame, a glaze pump installed on the side of the temporary storage tank, and a circulation pipe connected to the outlet of the glaze pump and the top side of the glazing tank. The bottom of the arc-shaped recycling tank is equipped with an inclined recycling pipe, one end of which extends into the temporary storage tank.

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