Air support device for silicon carbide honeycomb carrier extrusion molding

Abstract

This utility model relates to the field of silicon carbide honeycomb carrier production technology, specifically to an air support device for extrusion molding of silicon carbide honeycomb carriers, comprising: an air support box body, the air support box body having an internal cavity; and an air inlet pipe connected to the air support box body and communicating with the cavity; wherein, the upper end surface of the air support box body is constructed to include a first perforated plate and a second perforated plate arranged intersectingly. This utility model modifies the original arc-shaped support surface to a V-shaped support surface, adapting the original silicon carbide honeycomb carrier conveying method with the arc surface facing downwards to a right-angled side-facing conveying method, so that the two right-angled surfaces of the silicon carbide honeycomb carrier match the V-shaped support surface. The airflow from the first perforated plate restricts the movement of the silicon carbide honeycomb carrier to a first side, and the airflow from the second perforated plate restricts the movement of the silicon carbide honeycomb carrier to a second side, thereby maintaining a stable conveying state of the silicon carbide honeycomb carrier.

Description

Technical Field

[0001] This utility model relates to the field of silicon carbide honeycomb carrier production technology, and more specifically to an air support device for extrusion molding of silicon carbide honeycomb carriers. Background Technology

[0002] With the full implementation of the China VI emission standard (Phase 6b), emission limits for nitrogen oxides and particulate matter in diesel vehicle exhaust have been further tightened, placing higher demands on the purification efficiency of exhaust gas treatment systems. Against this backdrop, silicon carbide honeycomb carriers, with their superior heat resistance and mechanical strength, can stably withstand the high-temperature environment and high airflow impact during exhaust gas treatment, making them a core component for meeting the China VI standard, and market demand is showing a continuous upward trend.

[0003] Currently, the large-scale production of silicon carbide honeycomb carriers mainly relies on extrusion molding. Among these processes, the air support device is a crucial piece of equipment ensuring the carrier's undamaged shaping after molding, and its performance directly impacts product quality. The air support devices widely used in the industry currently suffer from structural defects: their pores are mostly concentrated in the arc-shaped surface area, resulting in significantly insufficient gas support at the right-angled edges of the carrier. This uneven support can cause the carrier to collapse and deform at the right angles during the shaping stage, directly affecting the product's dimensional accuracy and structural integrity.

[0004] To address this issue, some manufacturers have attempted to replace air support devices with mechanical rollers for auxiliary support, but this approach is prone to causing scratches on the carrier surface, creating new quality risks. Utility Model Content

[0005] In view of the technical problems existing in the air support device for silicon carbide honeycomb carrier production, this utility model proposes an improved air support device design to ensure the flatness and stability of long-sized and complex silicon carbide honeycomb carriers after extrusion molding.

[0006] An air support device for extrusion molding of silicon carbide honeycomb carriers according to the first aspect of the present invention includes:

[0007] An air support box, wherein the interior of the air support box is provided with a cavity;

[0008] An air intake pipe is connected to the air support box and communicates with the cavity;

[0009] The upper surface of the air support box is constructed to include a first perforated plate and a second perforated plate arranged intersecting each other. The surfaces of the first perforated plate and the second perforated plate are uniformly provided with a plurality of air holes. The air holes are connected to the cavity. The pressurized gas that enters the cavity through the air inlet pipe flows out through the air holes, so that a V-shaped air gap is formed between the honeycomb carrier above the first perforated plate and the first perforated plate and the second perforated plate.

[0010] Preferably, the included angle between the first orifice plate and the second orifice plate is 90°.

[0011] Preferably, the air intake pipe is connected to the bottom of the air support box and is located in the center of the air support box.

[0012] Preferably, the intersection line of the first orifice plate and the second orifice plate intersects and is perpendicular to the axis of the air intake pipe.

[0013] Preferably, the first orifice plate and the second orifice plate have the same shape and size.

[0014] Preferably, the air support box includes a bottom plate, two side plates, two end plates, and a support plate b. The support plate b includes a first perforated plate and a second perforated plate. The two side plates are respectively fixed to both sides of the bottom plate, and the two end plates are fixed to both ends of the bottom plate. The first perforated plate and the second perforated plate are connected to the side plates and the end plates, so that the cavity is formed between the bottom plate, the side plates, the end plates, and the support plate b.

[0015] Preferably, the surfaces of the first and second perforated plates are provided with a plurality of air holes arranged in a matrix.

[0016] Preferably, the pores are round pores, and the diameter of the pores is less than 3 mm.

[0017] Compared with the prior art, the significant advantages of the air support device for silicon carbide honeycomb carrier extrusion molding of this utility model are:

[0018] The air support device for extrusion molding of silicon carbide honeycomb carriers designed in this utility model modifies the original arc-shaped support surface to a V-shaped support surface. The original silicon carbide honeycomb carrier is adapted from the downward-facing arc surface to a downward-facing right-angled side conveying method, so that the two right-angled surfaces of the silicon carbide honeycomb carrier match the V-shaped support surface. The airflow from the first perforated plate restricts the movement of the silicon carbide honeycomb carrier to the first side, and the airflow from the second perforated plate restricts the movement of the silicon carbide honeycomb carrier to the second side, so as to maintain a stable conveying state of the silicon carbide honeycomb carrier. Attached Figure Description

[0019] The accompanying drawings are not intended to be drawn to scale. In the drawings, each identical or nearly identical component shown in the various figures may be denoted by the same reference numeral. For clarity, not every component is labeled in each figure. Embodiments of various aspects of the present invention will now be described by way of example and with reference to the accompanying drawings, wherein:

[0020] Figure 1 This is a schematic diagram of the cross-sectional structure of an air support device for extrusion molding of silicon carbide honeycomb carriers in the prior art;

[0021] Figure 2 This is a schematic cross-sectional view of the air support device for extrusion molding of silicon carbide honeycomb carriers shown in this utility model.

[0022] Figure 3 This is a schematic diagram of the air support device for extrusion molding of silicon carbide honeycomb carriers shown in this utility model.

[0023] Figure 4 This is a top view of the air support device for extrusion molding of silicon carbide honeycomb carriers shown in this utility model. Detailed Implementation

[0024] To better understand the technical content of this utility model, specific embodiments are provided below in conjunction with the accompanying drawings.

[0025] Combination Figure 1 As shown, in the prior art, the air support box 10 has an arc-shaped support surface 11a above it, and the arc-shaped surface F2 of the silicon carbide honeycomb carrier F is above the arc-shaped support surface 11a. The gas introduced into the cavity 101 by the air inlet pipe 20 flows out from the air hole 102 of the arc-shaped support surface 11a to support the silicon carbide honeycomb carrier F. However, this air support method is prone to causing instability of the silicon carbide honeycomb carrier F, resulting in the collapse of the right-angled sides. Therefore, this utility model proposes an air support device for extrusion molding of silicon carbide honeycomb carriers.

[0026] Combination Figures 2 to 4 As shown, the air support device mainly includes an air support box 10 and an air inlet pipe 20. The air support box 10 has a cavity 101 inside, and the air inlet pipe 20 is connected to the air support box 10 and communicates with the cavity 101.

[0027] The upper surface of the air support box 10 is constructed to include a first perforated plate 111 and a second perforated plate 112 arranged intersecting each other. The surfaces of the first perforated plate 111 and the second perforated plate 112 are uniformly provided with a plurality of air holes 102, and the air holes 102 are connected to the cavity 101.

[0028] When conveying the silicon carbide honeycomb carrier F, the right-angled surface F1 of the silicon carbide honeycomb carrier F corresponds to the first perforated plate 111 and the second perforated plate 112 respectively, and the right angle of the silicon carbide honeycomb carrier F corresponds to the intersection position of the first perforated plate 111 and the second perforated plate 112.

[0029] Thus, when gas at a predetermined pressure is introduced into the air intake pipe 20, the pressurized gas entering the cavity 101 through the air intake pipe 20 flows out through the air hole 102, forming a V-shaped air gap 103 between the silicon carbide honeycomb carrier F above the first perforated plate 111 and the second perforated plate 112 and the first perforated plate 111 and the second perforated plate 112. This method can maintain the stability of the silicon carbide honeycomb carrier F during the transportation process and prevent it from swaying left and right.

[0030] Furthermore, such as Figure 2 and Figure 3 As shown, the included angle between the first perforated plate 111 and the second perforated plate 112 can be set according to the included angle of the right-angled surface F1 of the silicon carbide honeycomb carrier F. Preferably, the two right-angled surfaces F1 of the silicon carbide honeycomb carrier F intersect at 90°, and the included angle between the first perforated plate 111 and the second perforated plate 112 is set to 90°.

[0031] Thus, the air holes 102 of the first perforated plate 111 flow to the upper right, and the air holes 102 of the second perforated plate 112 flow to the upper left, positioning the silicon carbide honeycomb carrier F between the first perforated plate 111 and the second perforated plate 112, without swaying or rotating, and in a stable conveying state.

[0032] Preferably, the first perforated plate 111 and the second perforated plate 112 have the same shape and size.

[0033] In an optional embodiment, the surfaces of the first perforated plate 111 and the second perforated plate 112 are provided with a plurality of vents 102 arranged in a matrix. The vents 102 are circular holes, and the diameter of the vents 102 is less than 3 mm.

[0034] In this way, the densely distributed small holes can effectively form an air gap 103 between the two right-angled surfaces F1 of the silicon carbide honeycomb carrier F and the perforated plate.

[0035] Furthermore, the intake pipe 20 is connected to the bottom of the air support box 10 and is located at the center of the air support box 10. Preferably, the intersection line of the first orifice plate 111 and the second orifice plate 112 intersects and is perpendicular to the axis of the intake pipe 20.

[0036] In this way, after the airflow enters the cavity 101 in the air support box 10, it can be more evenly distributed in all parts of the cavity 101.

[0037] Specifically, the air support box 10 includes a bottom plate 14, two side plates 12, two end plates 13, and a support plate 11b. The support plate 11b includes a first perforated plate 111 and a second perforated plate 112. The two side plates 12 are respectively fixed to both sides of the bottom plate 14, and the two end plates 13 are fixed to both ends of the bottom plate 14. The first perforated plate 111 and the second perforated plate 112 are connected to the side plates 12 and the end plates 13, so that a cavity 101 is formed between the bottom plate 14, the side plates 12, the end plates 13, and the support plate 11b.

[0038] In conjunction with the above embodiments, this utility model modifies the original arc-shaped support surface into a V-shaped support surface. The original silicon carbide honeycomb carrier is adapted from the downward-facing arc surface to a downward-facing right-angled side conveying method, so that the two right-angled surfaces of the silicon carbide honeycomb carrier match the V-shaped support surface. The airflow from the first perforated plate restricts the movement of the silicon carbide honeycomb carrier to the first side, and the airflow from the second perforated plate restricts the movement of the silicon carbide honeycomb carrier to the second side, so as to maintain a stable conveying state of the silicon carbide honeycomb carrier.

[0039] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Those skilled in the art to which this invention pertains can make various modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of this invention shall be determined by the claims.

Claims

1. A gas support device for extrusion of a silicon carbide honeycomb carrier, characterized by, include: An air support box (10) is provided inside the air support box (10); An air intake pipe (20) is connected to the air support box (10) and communicates with the cavity (101); The upper surface of the air support box (10) is constructed to include a first perforated plate (111) and a second perforated plate (112) arranged intersecting each other. The surfaces of the first perforated plate (111) and the second perforated plate (112) are uniformly provided with a plurality of air holes (102). The air holes (102) are connected to the cavity (101). The pressurized gas entering the cavity (101) through the air inlet pipe (20) flows out through the air holes (102), so that the honeycomb carrier above the first perforated plate (111) and the second perforated plate (112) forms a V-shaped air gap (103) between the first perforated plate (111) and the second perforated plate (112).

2. A gas support device for extrusion molding of a silicon carbide honeycomb carrier according to claim 1, characterized by, The included angle between the first orifice plate (111) and the second orifice plate (112) is 90°.

3. An air back-up device for extrusion of silicon carbide honeycomb structures as defined in claim 1, wherein, The air intake pipe (20) is connected to the bottom of the air support box (10) and is located in the center of the air support box (10).

4. The air support device for extrusion molding of silicon carbide honeycomb carriers according to claim 1, characterized in that, The intersection line of the first orifice plate (111) and the second orifice plate (112) intersects and is perpendicular to the axis of the air intake pipe (20).

5. The air support device for extrusion molding of silicon carbide honeycomb carriers according to claim 1, characterized in that, The first orifice plate (111) and the second orifice plate (112) have the same shape and size.

6. The air support device for extrusion molding of silicon carbide honeycomb carriers according to claim 1, characterized in that, The air support box (10) includes a base plate (14), two side plates (12), two end plates (13), and a support plate (11b). The support plate (11b) includes a first perforated plate (111) and a second perforated plate (112). The two side plates (12) are respectively fixed to both sides of the base plate (14), and the two end plates (13) are fixed to both ends of the base plate (14). The first perforated plate (111) and the second perforated plate (112) are connected to the side plates (12) and the end plates (13), so that the cavity (101) is formed between the base plate (14), the side plates (12), the end plates (13), and the support plate (11b).

7. The air support device for extrusion molding of silicon carbide honeycomb carriers according to claim 1, characterized in that, The surfaces of the first perforated plate (111) and the second perforated plate (112) are provided with a plurality of pores (102) arranged in a matrix.

8. The air support device for extrusion molding of silicon carbide honeycomb carriers according to claim 1, characterized in that, The vent (102) is a round hole, and the diameter of the vent (102) is less than 3 mm.

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