A leak-proof automobile catalyst slurry coating device

Abstract

The utility model relates to a kind of anti-seepage automobile catalyst slurry coating devices, which is composed of fixed parts, slurry containing parts, anti-seepage sealing parts and anti-seepage sealing fixed parts from top to bottom.The device fixed part is a square plate with a central circular hole.The slurry containing part is a cuboid, with two faces of length and width as the center, and a downward inner conical hole is opened through the center.The anti-seepage sealing part is a square flexible waterproof rubber with a certain thickness, with an inner circular hole opened through the center with a certain radius.The center line of the inner circular hole coincides with the center line of the inner conical hole of the slurry containing part, and anti-seepage sealing part fixing bolts are passed through the holes around the square edges.The utility model has the advantages of simple structure, convenient storage, quick maintenance and low cost, and is an ideal anti-seepage automobile catalyst slurry coating device for silicon carbide / mullite honeycomb carrier.

Description

Technical Field

[0001] This utility model relates to a leak-proof automotive catalyst slurry coating device, which is used to solve the problems of substandard quality and insufficient catalyst conversion efficiency caused by slurry leakage at the edges of the container and carrier during automotive catalyst slurry coating. Background Technology

[0002] During the coating of automotive catalyst carrier slurry, the prepared slurry is injected from the storage tank through a pipeline and then into the upper surface of the vertically placed catalyst carrier via the outlet pipe of the slurry metering device, where it accumulates. After the slurry is injected, a vacuum generated by a vacuum system is applied to the lower surface of the catalyst carrier. This vacuum draws the accumulated slurry through the pores of the catalyst carrier. Under the action of the vacuum airflow, the slurry accumulated on the carrier end face flows along the direction of the vacuum airflow in the catalyst carrier pores. During this flow, the slurry is adsorbed by the catalyst carrier and adheres to the pore walls. When the vacuum stops, the slurry has completed its adhesion to the inner wall of the catalyst carrier pores, and the coating of the catalyst slurry is complete.

[0003] The automotive catalyst carrier is cylindrical and honeycomb-shaped. When adding slurry to the upper surface of the vertically placed carrier, the slurry cannot flow into the carrier's honeycomb channels without a vacuum. It must wait until the entire amount of slurry, according to the process settings, has been added, coated, and accumulated on the carrier's end face before being allowed to enter the carrier's honeycomb channels under vacuum. This ensures that the slurry enters the channels at different locations on the carrier evenly. Therefore, two conditions must be met simultaneously: First, the slurry must have a viscosity sufficient to overcome gravity and not flow, allowing it to accumulate on the carrier's end face. Second, there must be a device to hold the slurry. This device must not only have the capacity to meet the required slurry addition volume but also have a sealing design to prevent slurry leakage from the carrier's end face edge during accumulation, thus preventing insufficient slurry adhesion to the carrier's honeycomb channels and contamination of the carrier's outer wall. Utility Model Content

[0004] The technical problem to be solved by this utility model is: under the condition that the viscosity characteristics of the coating slurry and the honeycomb catalyst carrier remain unchanged, the problem of insufficient slurry adhesion in the honeycomb channels of the carrier and the contamination of the outer wall of the carrier caused by the filling of the slurry and slurry leakage during the coating of automotive catalysts are not met, resulting in substandard quality and the catalyst conversion efficiency not meeting the emission requirements.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] A leak-proof automotive catalyst slurry coating device includes a device fixing component, a slurry holding component, a leak-proof sealing component, a leak-proof sealing fixing component, and fixing bolts.

[0007] The fixing component of the device is located on the upper part of the device and is a square aluminum alloy plate of a certain thickness. An inner circular hole with a certain radius is opened through the center of the aluminum alloy plate, and bolt internal thread pressing holes are opened at corresponding positions near the edge of the aluminum alloy plate.

[0008] The slurry container is located directly below the device fixing component. It is made of PP material and is a cuboid with equal length and width but different height. An inverted inner conical hole is made through the center of two faces with equal length and width. The center line of the inner conical hole coincides with the center line of the inner hole of the device fixing component. The bottom circumference of the inner conical hole is chamfered with a certain radius, and fixing bolt through holes are made at corresponding positions around the edge of the rectangular body.

[0009] The leak-proof sealing component is located directly below the slurry container component. It is a square flexible waterproof rubber sheet of a certain thickness. An inner circular hole with a certain radius is opened through the center of the flexible waterproof rubber sheet. The center line of the inner circular hole coincides with the center line of the inner conical hole of the slurry container component. Bolt through holes are opened at corresponding positions around the edge of the flexible waterproof rubber sheet.

[0010] The leak-proof sealing fixing component is located directly below the leak-proof sealing component. It is a square aluminum alloy plate of a certain thickness, with an inner circular hole penetrating through the center of the aluminum alloy plate at a certain radius. The center line of the inner circular hole coincides with the center line of the inner circular hole of the leak-proof sealing component. Bolt countersunk holes are made at corresponding positions around the edge of the aluminum alloy plate.

[0011] The fixing bolts are inland angle bolts of a certain length, used to pass through the countersunk holes of the anti-leakage sealing fixing components, the through holes of the anti-leakage sealing components, the through holes of the slurry container components, and the internal thread pressing holes of the device fixing components to form a connection, fixation, and tightening.

[0012] Working principle of this utility model device:

[0013] The automotive catalyst carrier enters the device along with the carrier support disc. The slurry holding component and the carrier end face of the device together form a slurry coating container. Simultaneously, the device's leak-proof sealing component prevents the coating slurry from leaking from the lower edge of the slurry holding component. When the carrier awaiting coating enters the device along with the carrier support disc, the coating slurry is added. After addition, a vacuum airflow is used to suction the slurry, completing the carrier slurry coating process.

[0014] The effective effects of this utility model are:

[0015] This invention, without altering the material / structure of the automotive catalyst carrier or the viscosity and other physicochemical properties of the coating slurry, possesses advantages such as simple structure, convenient storage, quick maintenance, and low cost. It is a relatively ideal device for applying leak-proof automotive catalyst slurry to a silicon carbide / cordierite honeycomb carrier. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0017] Figure 1 This is a three-dimensional structural diagram of the application scenario of the device of this utility model;

[0018] Figure 2 This is an exploded view of the device of this utility model;

[0019] Figure 3 These are views of the device of this utility model, wherein: (a) is a top view and (b) is a sectional view;

[0020] Figure 4 These are auxiliary views of the device of this utility model, wherein: (a) is the stopped state of the device of this utility model, and (b) is the running state of the device of this utility model;

[0021] The attached figures are labeled as follows:

[0022] 0 - Slurry injection outlet pipe;

[0023] 1-The fixing mechanism of this utility model device; 10-The fixing mechanism bracket; 11-The fixing mechanism slide groove;

[0024] 2-This utility model device; 20-Device fixing component; 200-Device fixing bolt internal threaded hole; 210-Slurry container fixing bolt through hole; 211-Slurry container inner conical hole bottom circumferential edge outer chamfer surface; 212-Slurry container inner conical hole surface; 220-Leakage-proof sealing component fixing bolt through hole; 221-Leakage-proof sealing component deformed part; 230-Leakage-proof sealing fixing component fixing bolt countersunk hole; 21-Slurry container; 22-Leakage-proof sealing component; 23-Leakage-proof sealing fixing component; 24-Fixing bolt;

[0025] 3-Catalyst support; 30-Circumferential edge of the upper end face of the support; 31-Upper end face of the support;

[0026] 4-Catalyst support disk;

[0027] 5-Vacuum pipe. Detailed Implementation

[0028] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0029] like Figure 2 , Figure 3 As shown, a leak-proof automotive catalyst slurry coating device consists of a device fixing component 20, a slurry holding component 21, a leak-proof sealing component 22, a leak-proof sealing fixing component 23, and fixing bolts 24.

[0030] The device fixing component 20 is located on the upper part of the utility device. It is a square aluminum alloy plate of a certain thickness. The inner circular hole is opened through the center of the aluminum alloy plate from top to bottom. The fixing bolt internal thread pressure hole 200 is opened at the corresponding position near the edge of the aluminum alloy plate. The four outer corners of the aluminum alloy plate are rounded with R5.

[0031] The slurry container 21 is located directly below the device fixing component 20. It is made of PP material and is a cuboid with equal length and width but unequal height. An inverted conical hole is drilled vertically through the center of two faces with equal length and width. The centerline of the conical hole coincides with the centerline of the inner hole of the device fixing component. A 45° opening is made at the bottom circumference of the conical hole. 。 Chamfer the outer corners, make through holes 210 for fixing bolts of the slurry container at corresponding positions around the edges of the two faces with equal length and width, and round the four outer corners of the cuboid with R5.

[0032] The leak-proof sealing component 22 is located directly below the slurry holding component 21, and has an inner circle and an outer square shape. An inner circular hole with a certain radius is drilled through the center of a square flexible waterproof rubber sheet of a certain thickness, with the center line of the inner circular hole coinciding with the center line of the inner conical hole in the slurry holding component 21. Through holes 220 for fixing bolts of the leak-proof sealing component are also drilled at corresponding positions around the perimeter of the square edge. This rubber sheet must have high elasticity and good flexibility, capable of deforming under external force and quickly returning to its original shape after the force is removed, and also possess good wear resistance.

[0033] Preferably, the flexible waterproof rubber sheet is made of vulcanized rubber.

[0034] The anti-leakage sealing fixing component 23 is located directly below the anti-leakage sealing component 22. It is a square aluminum alloy plate of a certain thickness. An inner circular hole with a certain radius is opened through the center of the aluminum alloy plate. The center line of the inner circular hole coincides with the center line of the inner circular hole of the anti-leakage sealing component 22. The anti-leakage sealing fixing bolt countersunk holes 230 are opened at corresponding positions around the edge of the aluminum alloy plate, and the four outer corners of the aluminum alloy plate are rounded with an R5 radius.

[0035] The fixing bolt 24 is an inland angle bolt of a certain length, used to pass through the countersunk hole 230 of the anti-leakage sealing fixing component fixing bolt, the through hole 220 of the anti-leakage sealing component fixing bolt, the through hole 210 of the slurry container fixing bolt, and the internal thread pressing hole 200 of the device fixing component fixing bolt to connect, fix and tighten.

[0036] When this utility model is working, such as Figure 1 As shown, the device of this utility model is first slid into the sliding groove 11 of the device fixing mechanism along both sides of the aluminum alloy plate of the device fixing component 20 to complete the support and fixing of the device of this utility model.

[0037] Furthermore, the catalyst carrier 3 is placed into the catalyst carrier support disk 4 manually or automatically by equipment.

[0038] Furthermore, the vacuum pipe 5 and the catalyst carrier support disk 4 move vertically upwards simultaneously under the drive of the specific motion mechanism of the equipment. Since the catalyst carrier support disk 4 is designed with an inner circular support platform to support the catalyst carrier 3, the catalyst carrier 3 also moves vertically upwards at the same time. Because the center lines of the catalyst carrier 3 and the catalyst carrier support disk 4 coincide with the center line of the device of this utility model, during the upward vertical movement, the catalyst carrier 3 enters the inner circular hole of the anti-leakage sealing and fixing component 23. As the vacuum pipe 5, the catalyst carrier support disk 4, and the catalyst carrier 3 continuously move upwards under the drive of the specific motion mechanism of the equipment...

[0039] Furthermore, as the catalyst support 3 continues to move upward, such as Figure 4 As shown in (a), the circumferential edge 30 of the upper end face of the carrier will contact the deformed portion 221 of the anti-leakage sealing component 22. Since the anti-leakage sealing component 22 is a flexible rubber sheet, as the catalyst carrier 3 moves upward, the deformed portion 221 of the anti-leakage sealing component 22 gradually approaches and adheres to the outer chamfered surface 211 of the bottom circumferential edge of the inner conical hole of the slurry container 21 under the continuous contact of the upper end face circumferential edge 30. When the deformed portion 221 of the anti-leakage sealing component 22 is completely adhered to the outer chamfered surface 211 of the bottom circumferential edge of the inner conical hole of the slurry container 21, the specific motion mechanism of the equipment stops operating. At this time, as... Figure 4 As shown in (b), the upper end face 31 of the carrier and the surface 212 of the conical hole inside the slurry container 21 form a barrel-shaped container. The upper end face 31 of the carrier is the bottom of the container, and the surface 212 of the conical hole inside the slurry container 21 is the container wall. Because the circumferential edge 30 of the upper end face of the carrier abuts against the deformed part 221 of the anti-leakage sealing component 22, and the deformed part 221 of the anti-leakage sealing component 22 is in close contact with the outer chamfered surface 211 of the bottom circumferential edge of the conical hole inside the slurry container 21, the junction between the container wall and the container bottom is well sealed, and no leakage will occur after the slurry is filled. At this point, the conditions for slurry filling are met.

[0040] Furthermore, the slurry filling outlet pipe 0 sprays out a set amount of slurry. Due to the effective seal formed between the outer edge of the upper circumference of the catalyst carrier 3 and the bottom of the conical hole of the slurry holding component 21, the slurry can be effectively sealed during filling and accumulation to ensure that there is no slurry leakage or contamination at the edge of the upper surface of the catalyst carrier 3 and to ensure the accuracy of the catalyst carrier coating amount.

[0041] Furthermore, after the slurry is added in the set amount, the equipment starts the vacuum generator, and the vacuum is applied to the catalyst carrier 3 through the vacuum pipe 5 to complete the vacuum suction.

[0042] Furthermore, after vacuum suction is completed, the motion mechanism drives the vacuum pipe 5, catalyst carrier support disk 4, and catalyst carrier 3 to move downwards. The material used for the inner circle of the leak-proof sealing component 2 is flexible rubber. Therefore, the deformed part 221 of the leak-proof sealing component 22 also elastically recovers from being attached to the outer chamfered surface 211 of the bottom circumference of the inner conical hole of the slurry container 21 to the initial horizontal state, as shown. Figure 4 As shown in (a), the slurry application process is complete.

Claims

1. A leak-proof automotive catalyst slurry coating device, characterized in that, The device includes a device fixing component (20), a slurry holding component (21), a leak-proof sealing component (22), and a leak-proof sealing fixing component (23). The device fixing component (20) is located at the top and is a square plate of a certain thickness. A circular hole is provided in the center of the square plate, and internal thread pressing holes (200) of the device fixing bolt are opened at corresponding positions near the edge of the square plate. The slurry container (21) is located directly below the device fixing component (20). It is a cuboid with equal length and width but different height. An inverted conical hole is opened through the two long and wide faces. The center line of the inner conical hole coincides with the center line of the inner hole of the device fixing component. Slurry container fixing bolt through holes (210) are opened at corresponding positions around the two long and wide faces of the cuboid of the slurry container (21). The leak-proof sealing component (22) is located directly below the slurry container component (21). Its shape is a square flexible waterproof rubber sheet with a certain thickness, which is round inside and square outside. An inner circular hole is opened through the center of the square flexible waterproof rubber sheet with a certain radius. The center line of the inner circular hole coincides with the center line of the inner circular conical hole of the slurry container component (21). The leak-proof sealing component fixing bolt through holes (220) are opened at the corresponding positions around the square edge.

2. The anti-leakage automotive catalyst slurry coating device according to claim 1, characterized in that: The bottom circumferential edge of the inner conical hole of the slurry container (21) is opened at 45 degrees. 。 External chamfer.

3. The anti-leakage automotive catalyst slurry coating device according to claim 1, characterized in that: Make holes (220) around the corresponding positions of the square edge of the flexible waterproof rubber sheet to fix the bolts of the anti-leakage sealing component.

4. The anti-leakage automotive catalyst slurry coating device according to claim 1, characterized in that: The four outer corners of the cuboid are rounded with an radius of 5 (R5).

5. The anti-leakage automotive catalyst slurry coating device according to claim 1, characterized in that: It also includes fixing bolts (24), which are inland angle bolts of a certain length, used to pass through the countersunk hole (230) of the fixing bolt of the leak-proof sealing component, the through hole (220) of the fixing bolt of the leak-proof sealing component, the through hole (210) of the fixing bolt of the slurry container component, and the internal thread pressing hole (200) of the fixing bolt of the device fixing component, and to connect, fix and tighten them.

6. The anti-leakage automotive catalyst slurry coating device according to any one of claims 1-5, characterized in that: The flexible waterproof rubber sheet is a vulcanized rubber sheet.

7. The anti-leakage automotive catalyst slurry coating device according to any one of claims 1-5, characterized in that: The square plate of the device fixing component (20) is a square aluminum alloy plate.

8. The anti-leakage automotive catalyst slurry coating device according to claim 7, characterized in that: The four outer corners of the aluminum alloy plate are rounded with an radius of 5 (R5).

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