Coating apparatus

Abstract

This utility model discloses a coating device, relating to the field of coating technology. The coating device is used to coat the inner wall of a ceramic fiber tube with a coating liquid. The device includes: a mounting housing, a box, a liquid injection nozzle, and a water pump. The mounting housing has a cavity communicating with a return port and an installation port. The installation port is arranged through a first direction for inserting the ceramic fiber tube. The box contains the coating liquid. The liquid injection nozzle is correspondingly positioned at one end of the mounting housing and sprays liquid toward the installation port. The water pump is connected to the return port and the box via pipes to pump the liquid from the cavity into the box. The technical solution provided by this utility model collects liquid leaking from the holes of the ceramic fiber tube through the cavity and then pumps it back into the box for reuse, achieving the technical effect of reducing coating liquid loss.

Description

Technical Field

[0001] This utility model relates to the field of coating technology, and in particular to a coating device. Background Technology

[0002] The ceramic filter tube consists of a support, ceramic fibers, and a binder forming a ceramic fiber tube as the main body. A denitrification catalyst is loaded onto the ceramic fiber tube to form the filter tube. The ceramic fiber tube has numerous tiny pores on its wall that connect the inside and outside of the tube.

[0003] In the treatment method of supported denitrification catalyst, the coating liquid is injected into the ceramic fiber tube. The coating liquid will seep through the pores and the excess coating liquid will adhere to the inside of the tube. The excess coating liquid will be evaporated by drying and heat treatment, resulting in a large loss of coating liquid. Utility Model Content

[0004] The main objective of this invention is to provide a coating device that reduces the loss of coating liquid during the process of loading catalysts onto ceramic fiber tubes.

[0005] To achieve the above objectives, the present invention proposes a coating device for coating the inner wall of a ceramic fiber tube with a coating liquid. The coating device includes: a mounting housing, a box, a liquid injection nozzle, and a water pump; the mounting housing has a cavity communicating with the cavity and a reflux port and an installation port, the installation port being arranged through a first direction for inserting the ceramic fiber tube; the box is used to contain the coating liquid; the liquid injection nozzle is correspondingly arranged at one end of the mounting housing for spraying liquid toward the installation port; the water pump is connected to the reflux port and the box via pipes to pump the liquid in the cavity into the box.

[0006] In one embodiment, the coating apparatus further includes a mounting frame, on which the mounting housing is rotatably mounted along a first directional axis and rotates on its own axis.

[0007] In one embodiment, the mounting port has a liquid injection position during the rotational stroke, and the mounting port is located at the liquid injection position so as to be directly opposite the liquid injection nozzle in a first direction.

[0008] In one embodiment, multiple mounting ports are provided, and the multiple mounting ports are located on the end side of the mounting housing in a first direction, and the multiple mounting ports are spaced apart along the circumferential direction.

[0009] In one embodiment, the coating apparatus further includes a drive motor, the mounting bracket has a rotating shaft extending along a first direction and rotating about an axis of the first direction, the rotating shaft passing through the mounting housing and being fixedly connected to the mounting housing, and the drive motor being drivenly connected to the rotating shaft.

[0010] In one embodiment, the mounting port includes a first mounting port and a second mounting port, and the mounting housing includes:

[0011] The cylindrical body is arranged to extend through the first direction;

[0012] A first baffle is disposed on one end of the cylinder in a first direction, and the first mounting port is disposed on the first baffle;

[0013] The second baffle is disposed on the other end of the cylinder in the first direction, the second mounting port is disposed on the second baffle, and the cylinder, the first baffle and the second baffle together form the cavity;

[0014] The first mounting port and the second mounting port are provided in a first direction to allow the same ceramic fiber tube to pass through.

[0015] In one embodiment, the mounting port includes a first mounting port and a second mounting port, and the mounting housing includes:

[0016] The cylindrical body has an opening at one end in the first direction;

[0017] A first baffle is disposed at the opening of the cylinder, forming the cavity with the cylinder, and the first mounting port is disposed on the first baffle.

[0018] A second baffle is disposed within the cavity, and a second mounting port is disposed within the second baffle;

[0019] The first mounting port and the second mounting port are respectively provided in a first direction for the same ceramic fiber tube to pass through.

[0020] In one embodiment, the coating device further includes a rubber ring disposed at the mounting port, the rubber ring being used for the ceramic fiber tube to pass through and for an interference fit with the ceramic fiber tube.

[0021] In one embodiment, the coating apparatus further includes an opening and closing element installed on the mounting housing, which is used to block the cavity from communicating with the return port, or to allow the cavity to communicate with the return port.

[0022] In one embodiment, the pipe is detachably connected to the return port.

[0023] The technical solution of this utility model collects the liquid that leaks from the holes of the ceramic fiber tube through a cavity, and then pumps it back into the tank through a water pump for recycling, thereby reducing the loss of coating liquid. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0025] Figure 1 A schematic diagram of the structure of an embodiment of the coating equipment provided by this utility model;

[0026] Figure 2 A schematic diagram of another embodiment of the coating equipment provided by this utility model;

[0027] Figure 3 for Figure 1 A partial structural diagram of the intermediate coating equipment.

[0028] Explanation of icon numbers:

[0029] 100. Coating equipment; 1. Mounting housing; 11. Cylinder; 111. Return port; 12. First baffle; 13. Second baffle; 14. Mounting port; 141. First mounting port; 142. Second mounting port; 2. Box; 3. Liquid injection nozzle; 4. Water pump; 5. Mounting bracket; 51. Rotating shaft; 6. Drive motor; 7. Opening and closing components.

[0030] 200. Ceramic fiber tube.

[0031] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0033] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0034] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0035] In the treatment method of supported denitrification catalyst, the coating liquid is injected into the ceramic fiber tube. The coating liquid will seep through the pores and the excess coating liquid will adhere to the inside of the tube. The excess coating liquid will be evaporated by drying and heat treatment, resulting in a large loss of coating liquid.

[0036] This utility model proposes a coating device.

[0037] Please see Figure 1 or Figure 2 In one embodiment of this utility model, the coating device 100 is used to coat the inner wall of a ceramic fiber tube 200 with a coating liquid. The coating device 100 includes: a mounting housing 1, a box 2, a liquid injection nozzle 3, and a water pump 4. The mounting housing 1 has a cavity communicating with the cavity and a return port 111 and an installation port 14. The installation port 14 is arranged through a first direction and is for inserting the ceramic fiber tube 200. The box 2 is used to contain the coating liquid. The liquid injection nozzle 3 is arranged corresponding to one end of the mounting housing 1 and is used to spray liquid toward the installation port 14. The water pump 4 is connected to the return port 111 and the box 2 through pipes respectively and is used to pump the liquid in the cavity into the box 2.

[0038] In the technical solution of this utility model, the mounting housing 1 has a mounting cavity, in which the ceramic fiber tube 200 is placed. The liquid injection nozzle 3 sprays the coating liquid in the box 2 toward the ceramic fiber tube 200 for coating. The liquid that leaks from the holes of the ceramic fiber tube 200 is collected through the cavity and then pumped back into the box 2 by the water pump 4 for recycling, thereby achieving the technical effect of reducing the loss of coating liquid.

[0039] To ensure uniform coating of the coating liquid onto the ceramic fiber tube 200, the coating device 100 further includes a mounting frame 5. The mounting housing 1 is rotatably mounted on the mounting frame 5 along a first directional axis and also rotates along the first directional axis. During rotation, the mounting housing 1 generates centrifugal force within the ceramic fiber tube 200, causing the coating liquid to move in a circular motion around the inner wall of the ceramic fiber tube 200, thereby achieving uniform coating of the inner wall of the ceramic fiber tube 200. Under the action of centrifugal force, the liquid inside the ceramic fiber tube 200 is thrown out through tiny holes in the sidewall to the outside of the ceramic fiber tube 200. This achieves uniform coating of both the inner wall and the sidewalls of the holes in the sidewall.

[0040] In order for the injection nozzle 3 to spray coating liquid into the opening of the ceramic fiber tube 200, the mounting port 14 has an injection position during its rotation stroke. The mounting port 14 is located at the injection position so as to be directly opposite the injection nozzle 3 in the first direction. When the mounting port 14 is rotated to the injection position, the injection nozzle 3 can spray coating liquid into the opening of the ceramic fiber tube 200. Then, the mounting housing 1 is rotated to give the coating liquid centrifugal force.

[0041] The same mounting housing 1 is only used to coat the inner wall of one ceramic fiber tube 200 with coating liquid, resulting in low coating efficiency. Therefore, it is necessary to use the same mounting housing 1 to coat the inner walls of multiple ceramic fiber tubes 200 with coating liquid. Multiple mounting ports 14 are provided. Please refer to [link / reference]. Figure 3 Multiple mounting ports 14 are located on the end side of the mounting housing 1 in the first direction, and the multiple mounting ports 14 are spaced apart along the circumferential direction. Multiple ceramic fiber tubes 200 are respectively inserted into the multiple mounting ports 14. During the rotation of the mounting housing 1, the mounting ports 14 rotate sequentially to the liquid injection position. At the liquid injection position, the liquid injection nozzle 3 sprays coating liquid into the opening of the ceramic fiber tube 200. Then, the mounting housing 1 accelerates its rotation, so that the coating liquid in the ceramic fiber tube 200 is subjected to centrifugal force and evenly coated on the inner wall of the ceramic fiber tube 200.

[0042] In a specific embodiment of the drive mounting housing 1: the coating equipment 100 further includes a drive motor 6, and the mounting bracket 5 has a rotating shaft 51 extending along a first direction and rotating about an axis of the first direction. The rotating shaft 51 passes through the mounting housing 1 and is fixedly connected to the mounting housing 1. The drive motor 6 is drivenly connected to the rotating shaft 51. The drive motor 6 drives the rotating shaft 51 to rotate, synchronously driving the mounting housing 1 to rotate.

[0043] Because the ceramic fiber tube 200 passes through a mounting port 14, it is not possible to limit the radial movement of both ends of the ceramic fiber tube 200 in the mounting housing 1. Therefore, the ceramic fiber tube 200 will swing when the mounting housing 1 rotates. Therefore, the specific configuration of the mounting housing 1 is as follows: Please refer to... Figure 1 The mounting port 14 includes a first mounting port 141 and a second mounting port 142. The mounting housing 1 includes a cylindrical body 11, a first baffle 12, and a second baffle 13. The cylindrical body 11 is disposed through the first direction. The first baffle 12 is disposed at one end of the cylindrical body 11 in the first direction, and the first mounting port 141 is disposed at the first baffle 12. The second baffle 13 is disposed at the other end of the cylindrical body 11 in the first direction, and the second mounting port 142 is disposed at the second baffle 13. The cylindrical body 11, the first baffle 12, and the second baffle 13 together form the cavity. The first mounting port 141 and the second mounting port 142 are correspondingly disposed in the first direction for the same ceramic fiber tube 200 to pass through. The first baffle 12 and the second baffle 13 simultaneously support both ends of the ceramic fiber tube 200, thereby limiting the ceramic fiber tube 200 in the rotational direction.

[0044] In order to allow more of the coating liquid seeping from the sidewall pores of the ceramic fiber tube 200 to be collected in the cavity, in another embodiment, please refer to... Figure 2 The mounting port 14 includes a first mounting port 141 and a second mounting port 142. The mounting housing 1 includes a cylindrical body 11, a first baffle 12, and a second baffle 13. One end of the cylindrical body 11 is open in a first direction. The first baffle 12 is located at the opening of the cylindrical body 11, forming a cavity with the cylindrical body 11. The first mounting port 141 is located within the first baffle 12. The second baffle 13 is located within the cavity, and the second mounting port 142 is located within the second baffle 13. The first mounting port 141 and the second mounting port 142 are correspondingly arranged in the first direction for the same ceramic fiber tube 200 to pass through. This arrangement ensures that the end of the ceramic fiber tube 200 closest to the opening is outside the cavity, while the remaining portion is inside the cavity, thereby enabling the collection of more exudated coating liquid.

[0045] To prevent the coating liquid located in the cavity from flowing out from the gap between the ceramic fiber tube 200 and the mounting port 14 during rotation, the coating device 100 also includes a rubber ring disposed at the mounting port 14. The rubber ring is used for the ceramic fiber tube 200 to pass through and is interference-fitted with the ceramic fiber tube 200. After the ceramic fiber tube 200 is installed, the cavity forms a sealed cavity, preventing the coating liquid from flowing out from the gap between the ceramic fiber tube 200 and the mounting port 14 and causing waste.

[0046] The water pump 4 is connected to the return port 111 via a pipe. The return port 111 is located on the mounting housing 1. Since the mounting housing 1 rotates, if the pipe is always connected to the return port 111, the pipe will become entangled on the mounting housing 1. Therefore, the pipe needs to be detachably connected to the return port 111. To prevent the coating liquid in the cavity from flowing out after the pipe is removed, the coating equipment 100 also includes an opening and closing element 7. The opening and closing element 7 is installed on the mounting housing 1 and is used to block the connection between the cavity and the return port 111, or to allow the cavity to connect with the return port 111.

[0047] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A coating apparatus for coating the inner wall of a ceramic fiber tube with a coating liquid, the ceramic fiber tube sidewall having a plurality of radially penetrating through holes, characterized in that, include: The mounting housing has a reflux port and an installation port communicating with the cavity. The installation port is provided through in a first direction and is for inserting the ceramic fiber tube. The container is used to hold the coating liquid; The liquid injection nozzle is disposed corresponding to one end of the mounting housing and is used to spray liquid toward the mounting port; A water pump, connected to the return port and the housing via pipes, is used to pump the liquid in the cavity into the housing.

2. The coating equipment as described in claim 1, characterized in that, The coating equipment further includes a mounting frame, and the mounting housing is rotatably mounted on the mounting frame along a first directional axis and rotates on its own axis along the first directional axis.

3. The coating equipment as described in claim 2, characterized in that, The mounting port has a liquid injection position during its rotational stroke, and the mounting port is located at the liquid injection position so as to be directly opposite the liquid injection nozzle in the first direction.

4. The coating equipment as described in claim 3, characterized in that, The mounting ports are provided in multiple ways, and the multiple mounting ports are located on the end side of the mounting housing in the first direction, and the multiple mounting ports are spaced apart along the circumferential direction.

5. The coating equipment as described in claim 2, characterized in that, The coating equipment further includes a drive motor, the mounting bracket has a rotating shaft extending along a first direction and rotating about an axis of the first direction, the rotating shaft passing through the mounting housing and being fixedly connected to the mounting housing, and the drive motor being drivenly connected to the rotating shaft.

6. The coating equipment as described in claim 1, characterized in that, The mounting port includes a first mounting port and a second mounting port, and the mounting housing includes: The cylindrical body is arranged to extend through the first direction; A first baffle is disposed on one end of the cylinder in a first direction, and the first mounting port is disposed on the first baffle; The second baffle is disposed on the other end of the cylinder in the first direction, the second mounting port is disposed on the second baffle, and the cylinder, the first baffle and the second baffle together form the cavity; The first mounting port and the second mounting port are respectively provided in a first direction for the same ceramic fiber tube to pass through.

7. The coating equipment as described in claim 1, characterized in that, The mounting port includes a first mounting port and a second mounting port, and the mounting housing includes: The cylindrical body has an opening at one end in the first direction; A first baffle is disposed at the opening of the cylinder, forming the cavity with the cylinder, and the first mounting port is disposed on the first baffle. A second baffle is disposed within the cavity, and a second mounting port is disposed within the second baffle; The first mounting port and the second mounting port are respectively provided in a first direction for the same ceramic fiber tube to pass through.

8. The coating equipment as described in claim 1, characterized in that, The coating equipment also includes a rubber ring, which is disposed at the mounting port and is used for the ceramic fiber tube to pass through and is interference-fitted with the ceramic fiber tube.

9. The coating equipment as described in claim 1, characterized in that, The coating equipment further includes an opening and closing component, which is installed on the mounting housing and is used to block the cavity from communicating with the return port, or to enable the cavity to communicate with the return port.

10. The coating equipment as claimed in claim 1, characterized in that, The pipe is detachably connected to the return port.

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