A coating and blowing device for refractory ceramics and a coating and blowing method thereof

Abstract

The present invention discloses a slurry coating and blowing device for refractory ceramics and a slurry coating and blowing method thereof, comprising a slurry pool, with bottom lifting mechanisms provided on both sides of the slurry pool. The lifting rods of the bottom lifting mechanisms on both sides are bent and extend from above into the slurry pool, and lifting plates are installed inside the lifting rods on both sides. The lifting plates are arranged in the slurry pool and can be lifted and moved up and down. The middle area of ​​the lifting plates is provided as a hollow mesh structure, and the refractory ceramics are placed on the mesh structure. The present invention is provided with a closed lifting cover and a vacuum device. After the refractory ceramics are placed in the slurry pool, the vacuum device is used to extract the slurry into the lifting cover, so that the slurry coating work of the internal honeycomb holes and the outer wall of the refractory ceramics can be quickly achieved.

Description

Technical Field

[0001] The invention relates to the technical field of refractory ceramic production, in particular to a slurry coating and blowing device for refractory ceramics and a slurry coating and blowing method thereof. Background Art

[0002] In the prior art, refractory ceramics are widely used in the fields of physics, chemistry, biology, medicine, etc. Specifically, refractory ceramics can be used in vehicle exhaust pipes based on their refractory properties and adsorption properties. Usually, there are many honeycomb holes inside the refractory ceramics for exhaust. This type of refractory ceramic product requires a catalyst slurry to be coated on the ceramic surface and the walls of the honeycomb holes during its production.

[0003] In the existing technology, the product is usually placed directly into the slurry pool, the entire product is immersed, and then taken out to air-dry. Usually, this method is very inefficient and the coating is very uneven. There is also a method in the existing technology that after the product is soaked, it is blown through a blowing device to blow off the excess slurry, which can increase work efficiency. However, the efficiency of the immersion coating method of refractory ceramic products is still very low and inconvenient to use.

[0004] Therefore, in order to solve the above problems, it is necessary to develop a coating and blowing device for refractory ceramics and a coating and blowing method thereof that can improve the coating and blowing efficiency. Summary of the Invention

[0005] The purpose of the present invention is to provide a coating and slurry blowing device for refractory ceramics in order to address the deficiencies in the prior art. The technical solution is as follows:

[0006] A coating and blowing device for refractory ceramics includes a slurry pool. Bottom lifting mechanisms are provided on both sides of the slurry pool. The lifting rods of the bottom lifting mechanisms on both sides are bent and extend from above into the slurry pool, and lifting plates are installed inside the lifting rods on both sides. The lifting plates are arranged in the slurry pool and can be lifted and moved up and down. The middle area of ​​the lifting plates is arranged as a hollow mesh structure, and the refractory ceramics are placed on the mesh structure.

[0007] The refractory ceramic is placed on the mesh structure, and a lifting cover is provided on the outside of the refractory ceramic. The lifting cover includes an inner cover and an outer cover. The inner cover and the outer cover are an integrated structure. The lower end of the inner cover is open. The inner cover can wrap the entire refractory ceramic inside. A coating gap is left between the inner cover and the outer wall of the refractory ceramic, and a slurry blowing gap is provided between the inner cover and the outer cover, and slurry blowing holes are also provided on the side walls and upper end face of the inner cover.

[0008] Upper lifting mechanisms are also installed on both sides of the upper end of the outer cover body. Driven by the upper lifting mechanism, the overall lifting cover body can be lifted and moved up and down; and a hose is also installed on the upper end of the outer cover body. The hose extends upward and is provided with two branches, one branch is set as a vacuum pipe, and a vacuum device is installed on the vacuum pipe; the other branch is set as a slurry blowing pipe, and a blowing device is installed on the slurry blowing pipe.

[0009] Furthermore, a liquid level sensor is installed on the inner side of the upper end of the outer cover, and electromagnetic valves are installed on the vacuum pipe and the slurry blowing pipe.

[0010] Furthermore, the refractory ceramic is configured as a circular honeycomb ceramic carrier structure; and the inner cover of the lifting cover is configured as a corresponding circular cylindrical structure, and the height of the inner cover is configured to be higher than the refractory ceramic.

[0011] Furthermore, a workstation slot is provided at the mesh structure in the middle of the lifting plate, and the refractory ceramics are placed in the workstation slot.

[0012] Furthermore, the bottoms of the inner and outer covers of the lifting cover are docked and installed through a ring plate, and a ring plate groove corresponding to the position of the ring plate is provided at the edge of the lifting plate. After the entire lifting cover is pressed down, the ring plate is pressed into the ring plate groove, and the refractory ceramics are enclosed in the inner cover.

[0013] Furthermore, a pressure-resistant cushion is provided in the ring plate.

[0014] Furthermore, the slurry blowing holes on the side wall and the upper end surface of the inner cover are arranged to be evenly spaced.

[0015] The present invention also provides a coating and slurry blowing method using the coating and slurry blowing device for refractory ceramics, comprising the following steps:

[0016] Step S1: Place the refractory ceramic in the work station slot in the middle of the lifting plate. The bottom lifting mechanism controls the lifting plate to move downward so that the slurry submerges the bottom of the refractory ceramic. Then, the upper lifting mechanism controls the entire lifting cover to move downward, and the bottom of the lifting cover is pressed into the ring plate slot, thereby sealing the internal space as a whole.

[0017] Step S2: Close the solenoid valve of the upper slurry blowing pipe, open the solenoid valve on the vacuum pipe and start the vacuum device. The vacuum device gradually removes the air inside the outer cover. Since the bottom of the refractory ceramic is immersed in the slurry, under the action of suction, the slurry directly enters the honeycomb holes, the coating gap and the slurry blowing gap from the hollow mesh structure of the lifting plate. The honeycomb holes and outer wall of the refractory ceramic are immersed in the slurry.

[0018] Step S3: When the slurry rises to the liquid level sensor at the upper end of the outer cover, the vacuum device and the solenoid valve on the corresponding pipeline are closed, and then the solenoid valve and the slurry blowing device on the slurry blowing pipeline are opened to inject air into the interior of the outer cover, and at the same time, the upper lifting mechanism and the lower lifting mechanism are controlled to move upward together, so that the bottom of the refractory ceramic is separated from the slurry pool. Under the action of the slurry blowing device, the slurry inside the outer cover can be quickly returned to the slurry pool by the blown air pressure;

[0019] Step S4: The entire lifting cover is lifted upward by the upper lifting mechanism, and the slurry blowing device continues to blow air into the interior of the outer cover. Evenly spaced slurry blowing holes are provided at the upper end and side walls of the inner cover. Air is blown out directly from the slurry blowing holes to sweep away the slurry remaining in the outer wall of the refractory ceramic and the internal honeycomb holes. After continued blowing, the slurry on the honeycomb holes and side walls is dried to complete the entire coating and slurry blowing process.

[0020] Beneficial effects: The present invention has the following beneficial effects:

[0021] 1) The present invention is provided with a closed lifting cover and a vacuum device. After the refractory ceramic is placed in the slurry pool, the vacuum device is used to extract the slurry into the lifting cover, which can quickly achieve the slurry coating work on the internal honeycomb holes and the outer wall of the refractory ceramic;

[0022] 2) The slurry blowing device provided in the present invention can use the air pressure principle to quickly return the slurry inside the lifting cover to the slurry pool after the lifting cover is filled with slurry, thereby achieving rapid slurry return inside the lifting cover;

[0023] 3) The lifting cover of the present invention is provided with an inner cover and an outer cover. A coating gap is provided between the inner cover and the refractory ceramic, so that the outer wall of the refractory ceramic can be coated. Moreover, the coating of the internal honeycomb holes can be achieved under the action of vacuum, without blind spots and with a wide coating range.

[0024] 4) In the present invention, a slurry blowing gap is provided between the inner cover and the outer cover, and a slurry blowing hole is provided on the inner cover. The slurry blowing device can then blow away excess slurry on the honeycomb holes and side walls, thereby accelerating the slurry blowing process.

[0025] 5) In the present invention, after the lifting cover is lifted upward, the slurry blowing device continues to blow, and the slurry is quickly dried through external air exchange. Moreover, since the slurry blowing holes on the inner cover are evenly arranged, the slurry blowing range is not only wide but also very uniform. Therefore, the thickness of the slurry layer formed on the refractory ceramics is very uniform and the coating quality is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the structure of the present invention;

[0027] Figure 2 This is a structural diagram of the lifting cover in the present invention;

[0028] Figure 3 It is a cross-sectional view of the refractory ceramic in the present invention. DETAILED DESCRIPTION

[0029] The present invention will be further illustrated below with reference to the accompanying drawings and specific embodiments. These embodiments are implemented based on the technical solutions of the present invention. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention.

[0030] like Figure 1 、 Figure 2 and Figure 3 As shown, a coating and blowing device for refractory ceramics includes a slurry pool 1, and bottom lifting mechanisms 2 are provided on both sides of the slurry pool 1. The lifting rods 3 of the bottom lifting mechanisms 2 on both sides are bent and extended from above into the slurry pool 1, and lifting plates 4 are installed inside the lifting rods 3 on both sides. The lifting plates 4 are set in the slurry pool 1 and can be lifted and moved up and down. The middle area of ​​the lifting plates 4 is set as a hollow mesh structure 5, and refractory ceramics 6 are placed on the mesh structure 5.

[0031] The refractory ceramic 6 is placed on the mesh structure 5, and a lifting cover body 7 is also provided on the outside of the refractory ceramic 6. The lifting cover body 7 includes an inner cover body 71 and an outer cover body 72. The inner cover body 71 and the outer cover body 72 are an integrated structure. The lower end of the inner cover body 71 is open. The inner cover body 71 can wrap the entire refractory ceramic 6 downward. A coating gap 73 is left between the inner cover body 71 and the outer wall of the refractory ceramic 6, and a slurry blowing gap 74 is provided between the inner cover body 71 and the outer cover body 72, and the side wall and upper end face of the inner cover body 71 are also provided with slurry blowing holes 75.

[0032] Upper lifting mechanisms 8 are also installed on both sides of the upper end of the outer cover body 72. Driven by the upper lifting mechanism 8, the overall lifting cover body 7 can be lifted and moved up and down; and a hose 9 is also installed on the upper end of the outer cover body 72. The hose 9 extends upward and has two branches. One branch is set as a vacuum pipe 10, and a vacuum device 11 is installed on the vacuum pipe 10; the other branch is set as a slurry blowing pipe 12, and a blowing device 13 is installed on the slurry blowing pipe 12.

[0033] A liquid level sensor 14 is also installed on the inner side of the upper end of the outer cover body 72, and an electromagnetic valve 15 is installed on the vacuum pipe 10 and the slurry blowing pipe 12; the refractory ceramic 6 is set as a circular honeycomb ceramic carrier structure; and the inner cover body 71 of the lifting cover body 7 is set as a corresponding circular cylindrical structure, and the height of the inner cover body 71 is set higher than the refractory ceramic 6.

[0034] A work station slot 16 is further provided at the mesh structure 5 in the middle of the lifting plate 4 , and the refractory ceramics 6 are placed in the work station slot 16 .

[0035] The bottoms of the inner cover body 71 and the outer cover body 72 of the lifting cover body 7 are docked and installed through the ring plate 17, and a ring plate groove 19 corresponding to the position of the ring plate 17 is provided at the edge of the lifting plate 4. After the entire lifting cover body 7 is pressed down, the ring plate 17 is pressed into the ring plate groove 19, and the refractory ceramic 6 is enclosed in the inner cover body 71.

[0036] A pressure-resistant cushion 18 is also provided in the ring plate 17; the slurry blowing holes 75 on the side wall and the upper end surface of the inner cover body 71 are arranged to be evenly spaced.

[0037] The working principle of this device is as follows: when in use, catalyst slurry is placed in the slurry pool, and the refractory ceramics are placed in the work station slot in the middle of the lifting plate. The bottom lifting mechanism controls the lifting plate to move downward so that the slurry submerges the bottom of the refractory ceramics. The depth of placement of the refractory ceramics can be determined according to actual usage.

[0038] Afterwards, the upper lifting mechanism controls the entire lifting cover to move downward, and the bottom of the lifting cover is pressed into the ring plate groove to seal the internal space as a whole. The solenoid valve of the upper slurry blowing pipe is closed, the solenoid valve on the vacuum pipe is opened, and the vacuum device is turned on. The vacuum device gradually extracts the air inside the outer cover. Since the bottom of the refractory ceramic is immersed in the slurry, the slurry directly enters the honeycomb holes, coating gaps and slurry blowing gaps from the hollow mesh structure of the lifting plate under the action of suction. The honeycomb holes and outer walls inside the refractory ceramics are immersed in the slurry. Under the action of vacuum, the slurry coating of the internal honeycomb holes and outer walls can be quickly achieved.

[0039] And when the slurry rises to the liquid level sensor at the upper end of the outer cover, the vacuum device and the solenoid valve on the corresponding pipeline are closed, and then the solenoid valve and the slurry blowing device on the slurry blowing pipeline are opened to inject air into the interior of the outer cover, and at the same time, the upper lifting mechanism and the lower lifting mechanism are controlled to move upward together, so that the bottom of the refractory ceramic is separated from the slurry pool. Under the action of the slurry blowing device, the slurry inside the outer cover can quickly return to the slurry pool through the blown-in air pressure. This process can achieve rapid reflux of the slurry.

[0040] Afterwards, the entire lifting cover is lifted up for a certain distance by the upper lifting mechanism, and the slurry blowing device continues to blow air into the inner part of the outer cover. In the present invention, the upper end and side wall of the inner cover are provided with many evenly spaced slurry blowing holes. The air is blown out directly from the slurry blowing holes, which can blow down the slurry remaining in the outer wall of the refractory ceramic and the internal honeycomb holes, and after continuing to blow, the slurry on the honeycomb holes and the side walls is blown dry to realize the overall coating and blowing process. The overall slurry blowing efficiency is very high, and the coating is also very uniform.

[0041] The above specific implementation method is only a preferred embodiment of the present invention and is not intended to limit the implementation of the present invention and the scope of the claims. All equivalent changes and modifications made based on the content of the patent protection scope of the present invention should be included in the scope of the patent application of the present invention.

Claims

1. A coating and slurry blowing device for refractory ceramics, characterized in that: The invention comprises a slurry pool (1), wherein bottom lifting mechanisms (2) are provided on both sides of the slurry pool (1), and lifting rods (3) of the bottom lifting mechanisms (2) on both sides are bent and extend from the top into the slurry pool (1), and lifting plates (4) are installed inside the lifting rods (3) on both sides. The lifting plates (4) are arranged in the slurry pool (1) and can be lifted and lowered, and the middle area of ​​the lifting plates (4) is arranged as a hollow mesh structure (5), and refractory ceramics (6) are placed on the mesh structure (5); The refractory ceramic (6) is placed on the mesh structure (5). A lifting cover (7) is provided on the outer side of the refractory ceramic (6). The lifting cover (7) includes an inner cover (71) and an outer cover (72). The inner cover (71) and the outer cover (72) are an integrated structure. The lower end of the inner cover (71) is open. The inner cover (71) can wrap the entire refractory ceramic (6) downward. A coating gap (73) is left between the inner cover (71) and the outer wall of the refractory ceramic (6). A slurry blowing gap (74) is provided between the inner cover (71) and the outer cover (72). The side wall and the upper end surface of the inner cover (71) are also provided with slurry blowing holes (75). Upper lifting mechanisms (8) are also installed on both sides of the upper end of the outer cover (72). Driven by the upper lifting mechanisms (8), the entire lifting cover (7) can be lifted and lowered. A hose (9) is also installed on the upper end of the outer cover (72). The hose (9) extends upward and is provided with two branches. One branch is provided as a vacuum pipe (10). A vacuum device (11) is installed on the vacuum pipe (10); and the other branch is provided as a slurry blowing pipe (12). A blowing device (13) is installed on the slurry blowing pipe (12).

2. The slurry blowing device for coating refractory ceramics according to claim 1, characterized in that: A liquid level sensor (14) is also installed on the inner side of the upper end of the outer cover (72), and electromagnetic valves (15) are installed on the vacuum pipe (10) and the slurry blowing pipe (12).

3. The coating and slurry blowing device for refractory ceramics according to claim 1, characterized in that: The refractory ceramic (6) is configured as a circular honeycomb ceramic carrier structure; and the inner cover (71) of the lifting cover (7) is configured as a corresponding circular cylindrical structure, and the height of the inner cover (71) is configured to be higher than that of the refractory ceramic (6).

4. The slurry blowing device for coating refractory ceramics according to claim 1, characterized in that: A workstation slot (16) is also provided at the mesh structure (5) in the middle of the lifting plate (4), and the refractory ceramic (6) is placed in the workstation slot (16).

5. The coating and slurry blowing device for refractory ceramics according to claim 1, characterized in that: The bottoms of the inner cover (71) and the outer cover (72) of the lifting cover (7) are butt-jointed and installed via a ring plate (17), and a ring plate groove (19) corresponding to the position of the ring plate (17) is provided at the edge of the lifting plate (4). When the entire lifting cover (7) is pressed downward, the ring plate (17) is pressed into the ring plate groove (19), and the refractory ceramic (6) is enclosed in the inner cover (71).

6. The slurry blowing device for coating refractory ceramics according to claim 5, characterized in that: A pressure-resistant cushion (18) is also provided in the ring plate (17).

7. The slurry blowing device for coating refractory ceramics according to claim 1, characterized in that: The slurry blowing holes (75) on the side wall and the upper end surface of the inner cover (71) are arranged at even intervals.

8. A slurry blowing method for a coating slurry blowing device for refractory ceramics according to any one of claims 1 to 7, characterized in that: The following steps are involved: Step S1: Place the refractory ceramic in the work station slot in the middle of the lifting plate. The bottom lifting mechanism controls the lifting plate to move downward so that the slurry submerges the bottom of the refractory ceramic. Then, the upper lifting mechanism controls the entire lifting cover to move downward, and the bottom of the lifting cover is pressed into the ring plate slot, thereby sealing the internal space as a whole. Step S2: Close the solenoid valve of the upper slurry blowing pipe, open the solenoid valve on the vacuum pipe and start the vacuum device. The vacuum device gradually removes the air inside the outer cover. Since the bottom of the refractory ceramic is immersed in the slurry, under the action of suction, the slurry directly enters the honeycomb holes, the coating gap and the slurry blowing gap from the hollow mesh structure of the lifting plate. The honeycomb holes and outer wall of the refractory ceramic are immersed in the slurry. Step S3: When the slurry rises to the liquid level sensor at the upper end of the outer cover, the vacuum device and the solenoid valve on the corresponding pipeline are closed, and then the solenoid valve and the slurry blowing device on the slurry blowing pipeline are opened to inject air into the interior of the outer cover, and at the same time, the upper lifting mechanism and the lower lifting mechanism are controlled to move upward together, so that the bottom of the refractory ceramic is separated from the slurry pool. Under the action of the slurry blowing device, the slurry inside the outer cover can be quickly returned to the slurry pool by the blown air pressure; Step S4: The entire lifting cover is lifted upward by the upper lifting mechanism, and the slurry blowing device continues to blow air into the interior of the outer cover. Evenly spaced slurry blowing holes are provided at the upper end and side walls of the inner cover. Air is blown out directly from the slurry blowing holes to sweep away the slurry remaining in the outer wall of the refractory ceramic and the internal honeycomb holes. After continued blowing, the slurry on the honeycomb holes and side walls is dried to complete the entire coating and slurry blowing process.

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