Cold air drying device of wall flow type carrier

Abstract

The utility model relates to the technical field of wall flow type carrier processing, in particular to a cold air drying device of a wall flow type carrier, which comprises an air suction pipeline component, a first clamp, a second clamp, a first air inlet, a second air outlet and a second air outlet, the air suction pipeline component is provided with an air inlet and an air outlet, and the first clamp is arranged at the air inlet of the air suction pipeline component; the air inlet end of the centrifugal fan is connected to the air outlet of the air suction pipeline part, and when the centrifugal fan is started, negative pressure is formed at the first clamp; the second clamp is used for being connected with a carrier to be dried, and the second clamp is connected to the first clamp. Downdraft type drying is adopted, namely, after the carrier is placed on the clamp, negative pressure generated by the centrifugal fan is used for exhausting air from the lower portion of the carrier, external cold air continuously flows through holes of the carrier, the drying purpose is achieved, in this way, air pressure loss is small, electric heating wires are not used, energy consumption is low, and in addition, by designing the different second clamp, the drying efficiency is improved. And the sizes and types of products capable of being dried are wider.

Description

Technical Field

[0001] The utility model relates to the technical field of wall flow type carrier processing, in particular to a cold air drying device for a wall flow type carrier. Background Art

[0002] Wall-flow carriers usually refer to a honeycomb ceramic filter with a special structure, the most representative of which is the diesel particulate filter (DPF). The structure of the wall-flow carrier is usually honeycomb with a large number of parallel channels. These channels are alternately closed in cross section, forming a "wall flow" effect. When the exhaust gas passes through the carrier, the gas is forced to pass through the wall from the open inlet channel into the adjacent closed channel, thereby achieving the capture of particulate matter. During operation, the solid particles in the exhaust gas are trapped on the pore wall, and the clean gas is discharged from the outlet channel.

[0003] After the wall-flow carrier is coated with the catalyst, it is usually necessary to dry it. Drying can effectively remove the moisture in the catalyst coating to prevent the moisture from adversely affecting the catalyst performance during subsequent use. In addition, the drying process helps to enhance the bonding force between the catalyst coating and the carrier, and improve the stability of the catalyst.

[0004] At present, hot air dryers are usually used to dry wall-flow carriers. When the dryer is running, the heating wire is heated to generate heat, and the fan supplies air. The air supplied by the fan brings the heat to the product to be dried, so that the product is dried. However, the characteristic of the hot air dryer is that the heating wire heats the airflow, but the air supply of the fan is small, resulting in a long drying time and huge energy consumption. In addition, the fan and the heating wire are far away from the drying platform, resulting in heat and wind pressure loss. Affected by the drying platform, the size of the product that can be dried is limited. Utility Model Content

[0005] In view of the technical problems existing in the wall-flow carrier drying in the prior art, the first aspect of the utility model proposes a cold air drying device for a wall-flow carrier, comprising:

[0006] An air suction duct component, wherein the air suction duct component is provided with an air inlet and an air outlet, and a first clamp is provided at the air inlet of the air suction duct component;

[0007] A centrifugal fan, the air inlet end of which is connected to the air outlet of the air suction duct component, and when the centrifugal fan is started, a negative pressure is formed at the first fixture;

[0008] A second clamp is used to connect the carrier to be dried, and the second clamp is connected to the first clamp, so that the external airflow passes through the carrier to be dried and enters the air suction duct component and is discharged by the centrifugal fan;

[0009] The second clamp has a first portion connected to the first clamp, and a second portion connected to the carrier to be dried, wherein the second portion of the second clamp matches the first clamp and varies according to the size of the carrier to be dried.

[0010] Preferably, the air suction duct component includes a first duct and a second duct which are interconnected, the first duct is connected to the air inlet end of the centrifugal fan, and the second duct is connected to the first fixture.

[0011] Preferably, the first pipe is constructed as a columnar pipe, the second pipe is constructed as a tapered pipe, and the large-diameter end of the second pipe is connected to the first clamp.

[0012] Preferably, the air suction duct component further includes a bracket, the first duct, the second duct and the first clamp are fixed to each other, and the bracket is connected to the first clamp so that the upper end surface of the first clamp is in a horizontal posture.

[0013] Preferably, the first clamp is constructed as an annular structure, and the second clamp is constructed as an annular structure that imitates the first clamp.

[0014] Preferably, the annular structure is a quadrilateral annular structure.

[0015] Preferably, a first sealing ring is provided on the contact surface between the first clamp and the second clamp, and a second sealing ring is provided on the contact surface between the second clamp and the carrier to be dried.

[0016] Preferably, the first clamp and the second clamp are fixedly connected by bolts.

[0017] Preferably, the air inlet of the centrifugal fan is provided with a connecting hose, and the connecting hose is connected to the air outlet of the air suction duct component.

[0018] Preferably, the centrifugal fan comprises a variable frequency centrifugal fan.

[0019] Compared with the prior art, the advantages of the utility model are:

[0020] The utility model adopts downward suction drying, that is, after the carrier is placed on the clamp, the negative pressure generated by the centrifugal fan is used to draw air from the bottom of the carrier, so that the external cold wind continues to flow through the pores of the carrier to achieve the purpose of drying. This method has small wind pressure loss and does not use electric heating wire, so the energy consumption is low. In addition, by designing different second clamps, it can adapt to carriers with diameters ranging from 143 to 330 mm, and the size and type of products that can be dried are wider. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are not intended to be drawn to scale. In the accompanying drawings, each identical or nearly identical component shown in various figures may be represented by the same reference numeral. For the sake of clarity, not every component is labeled in each figure. Now, embodiments of various aspects of the utility model will be described by way of example and with reference to the accompanying drawings, in which:

[0022] Figure 1 It is a structural schematic diagram of a cold air drying device for a wall-flow carrier shown in the utility model;

[0023] Figure 2 It is a schematic diagram of the first clamp and the second clamp shown in the utility model. DETAILED DESCRIPTION

[0024] In order to better understand the technical content of the present invention, specific embodiments are described below in conjunction with the accompanying drawings.

[0025] like Figure 1 As shown, the first aspect of the utility model provides a cold air drying device for a wall-flow carrier, comprising an air suction duct component 10 , a centrifugal fan 30 and a second clamp 20 .

[0026] The suction duct component 10 is provided with an air inlet and an air outlet. A first clamp 13 is provided at the air inlet of the suction duct component 10. The carrier is used to be installed on the first clamp 13. The air inlet end of the centrifugal fan 30 is connected to the air outlet of the suction duct component 10. When the centrifugal fan 30 is started, negative pressure is formed at the first clamp 13.

[0027] Optionally, the air suction duct component 10 includes a first duct 11 and a second duct 12 that are interconnected, the first duct 11 is connected to an air inlet end of the centrifugal fan 30 , and the second duct 12 is connected to the first fixture 13 .

[0028] In a specific embodiment, the first pipe 11 is configured as a columnar pipe, the second pipe 12 is configured as a tapered pipe, and the large-diameter end of the second pipe 12 is connected to the first clamp 13 .

[0029] It can be seen that the air path flows from the first clamp 13 through the large diameter section of the second pipe 12 to the small diameter section, and then flows through the second pipe 12 to the connecting hose 31, and the connecting hose 31 is connected to the air outlet of the suction pipe component 10.

[0030] The second pipeline 12 and the centrifugal fan 30 are connected by the connecting hose 31, so that the vibration of the centrifugal fan 30 can be prevented from affecting the stability among the first clamp 13, the second clamp 20 and the carrier.

[0031] In a preferred embodiment, the centrifugal fan 30 comprises a variable frequency centrifugal fan. Thus, the frequency and blowing time of the fan can be adjusted according to the size and type of the carrier, so that the water loss rate of the carrier is greater than 80%, and the purpose of energy-saving drying is achieved.

[0032] Preferably, the air suction duct component 10 further comprises a bracket, the first duct 11, the second duct 12 and the first clamp 13 are fixed to each other, and the bracket is connected to the first clamp 13 so that the upper end surface of the first clamp 13 is in a horizontal posture.

[0033] In this way, it is convenient to place the second fixture 20 on the upper end surface of the first fixture 13 .

[0034] It can be seen that compared with the prior art, the present application uses the centrifugal fan 30 as the power, dries the carrier through the cold air flow generated by the centrifugal fan 30, and arranges the carrier on the air inlet side of the centrifugal fan 30. Therefore, the air flow first passes through the carrier, the wind pressure loss of the centrifugal fan 30 is small, and the purpose of efficiently drying the carrier can be achieved.

[0035] It will be appreciated that the carrier may have different sizes and shapes, e.g. Figure 1 The circular or square carrier shown, further, in order to better fix the carrier, different carriers are clamped by a second clamp 20, and the second clamp 20 is connected to the first clamp 13, so that the external airflow passes through the carrier to be dried and enters the first pipe 11, the second pipe 12, and is finally discharged by the exhaust pipe 32 of the centrifugal fan 30.

[0036] The second clamp 20 has a first portion connected to the first clamp 13, and a second portion connected to the carrier to be dried, wherein the second portion of the second clamp 20 matches the first clamp 13, and the second portion of the second clamp 20 varies according to the size of the carrier to be dried.

[0037] Optional, such as Figure 1 As shown, the clamp for clamping the circular carrier 100 is a B-type clamp 20 b , and the clamp for clamping the square carrier 100 is an A-type clamp 20 a , but both the A-type clamp 20 a and the B-type clamp 20 b can be adapted to the first clamp 13 .

[0038] In this way, the first clamp 13 can be defined as a universal clamp, and the second clamp 20 can be defined as a special clamp for the carrier. The second clamp 20 has different inner contours according to different carriers, but its outer contour remains unchanged. Therefore, the first clamp 13 can adapt to different second clamps 20.

[0039] In an optional embodiment, the first clamp 13 is configured as an annular structure, and the second clamp 20 is configured as an annular structure conforming to the first clamp 13 .

[0040] like Figure 2 As shown, the second clamp 20 can be adaptively attached to the upper end of the first clamp 13, in particular, the contact surface of the first clamp 13 and the second clamp 20 is provided with a first sealing ring 14, and the contact surface of the second clamp 20 and the carrier to be dried is provided with a second sealing ring 21. Therefore, when the second clamp 20 is placed on the surface of the first clamp 13, sealing is achieved through the first sealing ring 14, and when the carrier is placed on the surface of the second clamp 20, sealing is achieved through the second sealing ring 21.

[0041] Preferably, the annular structure is a quadrilateral annular structure.

[0042] In an optional embodiment, the first clamp 13 and the second clamp 20 are fixedly connected by bolts 22. In this way, the connection between the second clamp 20 and the first clamp 13 is tighter and has better sealing, which is beneficial to improving the drying efficiency of the carrier.

[0043] In combination with the above embodiments, the utility model adopts downward suction drying, that is, after the carrier is placed on the clamp, the negative pressure generated by the centrifugal fan is used to draw air from the bottom of the carrier, so that the external cold air continues to flow through the pores of the carrier to achieve the purpose of drying. This method has small wind pressure loss, does not use electric heating wire, and consumes less energy. In addition, by designing different second clamps, it can adapt to carriers with diameters ranging from 143 to 330 mm, and the size and type of products that can be dried are wider.

[0044] Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. A person with ordinary knowledge in the technical field to which the present invention belongs may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be determined by the definition of the claims.

Claims

1. A cold air drying device for a wall-flow carrier, characterized in that: include: An air suction duct component (10), the air suction duct component (10) being provided with an air inlet and an air outlet, and a first clamp (13) being provided at the air inlet of the air suction duct component (10); a centrifugal fan (30), the air inlet end of which is connected to the air outlet of the air suction duct component (10), and when the centrifugal fan (30) is started, a negative pressure is formed at the first clamp (13); A second clamp (20) is used to connect the carrier to be dried, the second clamp (20) is connected to the first clamp (13), so that the external airflow passes through the carrier to be dried and enters the air suction duct component (10) and is discharged by the centrifugal fan (30); The second clamp (20) is provided with a first part connected to the first clamp (13), and the second clamp (20) is provided with a second part connected to the carrier to be dried, wherein the second part of the second clamp (20) matches the first clamp (13), and the second part of the second clamp (20) varies according to the size of the carrier to be dried.

2. The cold air drying device for a wall-flow carrier according to claim 1, characterized in that: The air suction duct component (10) comprises a first duct (11) and a second duct (12) which are interconnected, wherein the first duct (11) is connected to an air inlet end of the centrifugal fan (30), and the second duct (12) is connected to the first fixture (13).

3. The cold air drying device for a wall-flow carrier according to claim 2, characterized in that: The first pipe (11) is configured as a columnar pipe, the second pipe (12) is configured as a tapered pipe, and the large-diameter end of the second pipe (12) is connected to the first clamp (13).

4. The cold air drying device for a wall-flow carrier according to claim 2 or 3, characterized in that: The air suction duct component (10) further comprises a bracket, the first duct (11), the second duct (12) and the first clamp (13) are fixed to each other, and the bracket is connected to the first clamp (13) so that the upper end surface of the first clamp (13) is in a horizontal posture.

5. The cold air drying device for a wall-flow carrier according to claim 1, characterized in that: The first clamp (13) is configured as an annular structure, and the second clamp (20) is configured as an annular structure conforming to the first clamp (13).

6. The cold air drying device for a wall-flow carrier according to claim 5, characterized in that: The annular structure is a quadrilateral annular structure.

7. The cold air drying device for a wall-flow carrier according to claim 5 or 6, characterized in that: The contact surface between the first clamp (13) and the second clamp (20) is provided with a first sealing ring (14), and the contact surface between the second clamp (20) and the carrier to be dried is provided with a second sealing ring (21).

8. The cold air drying device for a wall-flow carrier according to claim 7, characterized in that: The first clamp (13) and the second clamp (20) are fixedly connected via bolts (22).

9. The cold air drying device for a wall-flow carrier according to claim 1, characterized in that: The air inlet of the centrifugal fan (30) is provided with a connecting hose (31), and the connecting hose (31) is connected to the air outlet of the air suction duct component (10).

10. The cold air drying device for a wall-flow carrier according to claim 1, characterized in that: The centrifugal fan (30) comprises a variable frequency centrifugal fan.

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