Novel DPF (diesel particulate filter) gas taking steel pipe mounting base
By designing a new type of DPF intake steel pipe mounting base and utilizing a funnel-shaped combination structure of connecting steel pipe and rubber gasket, the problem of icing in the intake pipe was solved, ensuring that exhaust gas and water vapor flow smoothly into the catalyst, thus achieving sealing and accuracy of monitoring data.
Patent Information
- Application Number
- CN202422781605.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-15
- Publication Date
- 2025-11-04
- Estimated Expiration
- 2034-11-15
AI Technical Summary
In cold environments, the intake pipe of the DPF catalytic converter is prone to blockage due to water vapor freezing, which affects the accuracy of the differential pressure sensor monitoring data.
A novel DPF intake steel pipe mounting base is designed. The combination structure of the funnel-shaped connecting steel pipe and rubber gasket enhances the sealing performance, ensuring that exhaust gas and water vapor flow smoothly into the catalyst and preventing water vapor from freezing.
It improves sealing performance, prevents the gas intake pipe from freezing, ensures the accuracy of differential pressure sensor monitoring data, and has a simple structure, saves space, and reduces costs.
Smart Images
Figure CN223511003U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of DPF catalyst technology, and in particular to a novel DPF gas intake steel pipe mounting base. Background Technology
[0002] The main function of a DPF catalytic converter is to collect PM (particulate matter) from exhaust gas. The particulate matter in exhaust gas is primarily carbon produced by diesel combustion. In addition, ash from the combustion of engine oil additives also adheres to the DPF. The DPF catalytic converter typically burns off the carbon periodically to achieve regeneration. The regeneration of the DPF catalytic converter is activated by monitoring the pressure difference across its terminals; therefore, pressure difference intake pipes are installed at both ends of the DPF catalytic converter.
[0003] The DPF intake pipe is connected to the base via a water-passing bolt and a fixing sleeve. The water-passing bolt passes through the threaded connection between the fixing sleeve and the base. A gasket is used to maintain its seal, and a through hole on the surface of the water-passing bolt ensures communication between the two (see attached). Figure 5 As shown in the figure, due to the large amount of water vapor in the exhaust gas, the water vapor will adhere to the gas intake pipe. In the cold winter, some of the water vapor will flow back into the inside of the fixed sleeve inside the gas intake pipe. Due to the obstruction of the water-passing bolt, some of the backflowing water will be stored inside the fixed sleeve, causing the inside of the fixed sleeve to freeze, blocking the exhaust gas from entering the inside of the gas intake pipe, and affecting the accuracy of the differential pressure sensor monitoring data.
[0004] Therefore, it is necessary to provide a new type of DPF gas intake steel pipe mounting base to solve the above problems. Utility Model Content
[0005] The technical problem solved by this utility model is to provide a new type of DPF gas extraction steel pipe mounting base that is easy to install and can quickly discharge water vapor inside the gas extraction pipe.
[0006] To solve the above-mentioned technical problems, the present invention provides a novel DPF gas intake steel pipe mounting base comprising: a DPF catalyst, the bottom end of which is symmetrically and fixedly connected to the base; the interior of the base is threadedly connected to a fixing screw; the interior of the fixing screw is rotatably connected to a connecting steel pipe; one end of both the high-pressure gas intake steel pipe and the low-pressure gas intake steel pipe is fixedly connected to the connecting steel pipe; the funnel-shaped end of the connecting steel pipe abuts against the interior of the base; a rubber pad is engaged inside the base, and the rubber pad abuts against the inner wall of the connecting steel pipe.
[0007] Preferably, a differential pressure sensor is mounted on the surface of the DPF catalyst, and the differential pressure sensor is connected to the high-pressure gas intake pipe and the low-pressure gas intake pipe via a flexible hose.
[0008] Preferably, the DPF catalyst is mounted on a side wall bracket, and the connection points of the high-pressure gas intake pipe and the low-pressure gas intake pipe with the hose are located inside the bracket.
[0009] Preferably, the interior of the adjacent base is provided with an annular groove, and the bottom end of the connecting steel pipe is equipped with multiple spring pieces with arc-shaped sidewalls, which engage with the interior of the groove.
[0010] Preferably, a fixing ring is fixedly connected to the side wall of the connecting steel pipe, and the fixing ring is rotatably connected to the fixing screw.
[0011] Preferably, the top of the rubber pad is a hollow frustum, and the rubber pad is attached to the inner wall of the connecting steel pipe.
[0012] Compared with related technologies, the novel DPF gas extraction steel pipe mounting base provided by this utility model has the following beneficial effects:
[0013] This utility model provides a novel DPF gas intake pipe mounting base. When connecting the gas intake pipe to the base, the connecting steel pipe and the fixing screw are placed inside the base. Rotating the fixing screw inside the base causes the connecting steel pipe to enter the base. As the connecting steel pipe enters, it compresses a rubber pad inside the base. The top of the rubber pad is a hollow frustum, and the bottom of the connecting steel pipe is funnel-shaped. The rubber pad fits against the inner wall of the connecting steel pipe, increasing the contact area and improving the seal. This allows exhaust gas from the DPF catalyst to directly enter the gas intake pipe through the base and the connecting steel pipe. Water vapor inside the gas intake pipe can also flow into the DPF catalyst through the space between the connecting steel pipe and the base. The base is positioned below the horizontal line of the DPF catalyst (as shown in the attached diagram). Figure 1 As shown in the figure, it can still ensure smooth return of condensate, solving the problem of condensate freezing and pipe blockage in cold environments; moreover, the device has a simple structure and compact layout, effectively saving space, facilitating assembly, and reducing costs. Attached Figure Description
[0014] Figure 1 A schematic diagram of a preferred embodiment of the novel DPF gas extraction steel pipe mounting base provided by this utility model;
[0015] Figure 2 for Figure 1 The diagram shows an exploded view of the base, high-pressure gas intake pipe, and low-pressure gas intake pipe.
[0016] Figure 3 for Figure 2 The diagram shows the internal structure of the base.
[0017] Figure 4 As Figure 2 the structure shown in A place amplification schematic diagram;
[0018] Figure 5 is the existing gas steel pipe, base structure exploded schematic view.
[0019] Figure label: 1, DPF catalytic converter, 2, base, 3, high pressure gas steel pipe, 4, low pressure gas steel pipe, 5, support, 6, hose, 7, differential pressure sensor, 8, fixed screw, 9, connecting steel pipe, 10, fixed ring, 11, rubber pad, 12, groove, 13, spring, 14, fixed sleeve, 15, water bolt, 16, gasket, 17, through hole. DETAILED DESCRIPTION
[0020] The utility model will be further described below in combination with the drawings and embodiments.
[0021] Please refer to Figures 1 to 5 , Figure 1 is a preferred embodiment of the structure schematic view of the novel DPF gas steel pipe installation base provided by the utility model; Figure 2 is Figure 1 the base, high pressure gas steel pipe, low pressure gas steel pipe structure exploded schematic view shown in; Figure 3 is Figure 2 the internal structure schematic view of the base; Figure 4 is Figure 2 the structure shown in A place amplification schematic diagram; Figure 5The existing gas taking steel pipe and base structure are exploded and shown. The new type DPF gas taking steel pipe mounting base comprises a DPF catalyst 1, the bottom end of the DPF catalyst is symmetrically fixedly connected with a base 2, the inside of the base 2 is threadedly connected with a fixed screw rod 8, the inside of the fixed screw rod 8 is rotationally connected with a connecting steel pipe 9, one end of a high pressure gas taking steel pipe 3 and a low pressure gas taking steel pipe 4 is fixedly connected with the connecting steel pipe 9, the funnel-shaped one end of the connecting steel pipe 9 abuts against the inside of the base 2, the inside of the base 2 clamps a rubber pad 11, and the rubber pad 11 abuts against the inner side wall of the connecting steel pipe 9. When the gas taking pipe is connected with the base 2, the connecting steel pipe 9 and the fixed screw rod 8 are put into the inside of the base 2, the fixed screw rod 8 is rotated in the inside of the base 2, the fixed screw rod 8 drives the connecting steel pipe 9 to enter the inside of the base 2, the rubber pad 11 in the inside of the base 2 is pressed along with the entering of the connecting steel pipe 9, the top end of the rubber pad 11 is in a hollow circular truncated cone shape, the bottom end of the connecting steel pipe 9 is in a funnel shape, the rubber pad 11 is attached to the inner side wall of the connecting steel pipe 9, the contact area of the two is increased, the sealing property between the two is improved, the exhaust gas in the inside of the DPF catalyst 1 can directly enter the inside of the gas taking pipe through the base 2 and the connecting steel pipe 9, and the water vapor in the inside of the gas taking pipe can also flow into the inside of the DPF catalyst 1 through the connecting steel pipe 9 and the base 2, thereby reducing the pipe blockage problem caused by the water vapor icing of the gas taking pipe.
[0022] A differential pressure sensor 7 is mounted on the surface of the DPF catalyst 1, the differential pressure sensor 7 is connected with the high pressure gas taking steel pipe 3 and the low pressure gas taking steel pipe 4 through a hose 6, in order to facilitate the exhaust gas in the inside of the DPF catalyst 1 to enter the inside of the differential pressure sensor 7 through the high pressure gas taking steel pipe 3 and the low pressure gas taking steel pipe 4 respectively, the differential pressure sensor 7 monitors the pressure difference between the two ends of the DPF catalyst 1, thereby determining the timing of DPF catalyst regeneration.
[0023] A support 5 is mounted on the side wall of the DPF catalyst 1, and the connection positions of the high pressure gas taking steel pipe 3 and the low pressure gas taking steel pipe 4 with the hose 6 are located in the inside of the support 5, in order to facilitate the support 5 to increase the stability of the high pressure gas taking steel pipe 3 and the low pressure gas taking steel pipe 4 on the surface of the DPF catalyst.
[0024] The inside of the base 2 is provided with an annular groove 12, the bottom end of the connecting steel pipe 9 is provided with a plurality of elastic pieces 13 with arc-shaped side walls, the elastic pieces 13 are clamped in the inside of the groove 12, when the connecting steel pipe 9 enters the inside of the base 2, the base 2 extrudes the side walls of the elastic pieces 13 to make them shrink, when the elastic pieces 13 are aligned with the groove 12, the elastic pieces 13 are clamped in the groove 12 again, the stability and firmness of the connecting steel pipe 9 in the inside of the base 2 are increased, and the loosening between the connecting steel pipe 9 and the base 1 is avoided.
[0025] The side wall of the connecting steel pipe 9 is fixedly connected with a fixing ring 10, the fixing ring 10 is rotatably connected with the fixing screw 8, when the fixing screw 8 rotates in the inside of the base 2, the fixing screw 8 rotates in the side wall of the fixing ring 10, when the fixing screw 8 drives the connecting steel pipe 9 to move, the connecting steel pipe 9 is prevented from rotating synchronously with the fixing screw 8.
[0026] The above is only the embodiment of the present application, and does not limit the patent range of the present application, any equivalent structure or equivalent flow transformation in the content of the present application specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection range of the present application.
Claims
1. A novel DPF (Digital Fluorescent Air Extraction Pipe) mounting base, characterized in that, include: DPF catalyst (1), the bottom end of the DPF catalyst is symmetrically fixedly connected to the base (2); the interior of the base (2) is threadedly connected to the fixing screw (8); The fixed screw (8) is rotatably connected to the connecting steel pipe (9). One end of the high-pressure gas extraction steel pipe (3) and the low-pressure gas extraction steel pipe (4) are fixedly connected to the connecting steel pipe (9). The funnel-shaped end of the connecting steel pipe (9) abuts against the inside of the base (2). The inside of the base (2) engages with the rubber pad (11), and the rubber pad (11) abuts against the inner wall of the connecting steel pipe (9).
2. The novel DPF intake steel pipe mounting base according to claim 1, characterized in that, A differential pressure sensor (7) is mounted on the surface of the DPF catalyst (1). The differential pressure sensor (7) is connected to the high-pressure gas intake pipe (3) and the low-pressure gas intake pipe (4) through a hose (6).
3. The novel DPF gas extraction steel pipe mounting base according to claim 2, characterized in that, The side wall of the DPF catalyst (1) is mounted with a bracket (5), and the connection between the high-pressure gas intake pipe (3) and the low-pressure gas intake pipe (4) and the hose (6) is located inside the bracket (5).
4. The novel DPF gas extraction steel pipe mounting base according to claim 1, characterized in that, The interior of the adjacent base (2) is provided with an annular groove (12), and the bottom end of the connecting steel pipe (9) is equipped with multiple spring pieces (13) with arc-shaped sidewalls, which engage with the interior of the groove (12).
5. The novel DPF gas extraction steel pipe mounting base according to claim 1, characterized in that, The side wall of the connecting steel pipe (9) is fixedly connected to a fixing ring (10), and the fixing ring (10) is rotatably connected to the fixing screw (8).
6. The novel DPF gas extraction steel pipe mounting base according to claim 1, characterized in that, The top of the rubber pad (11) is a hollow frustum, and the rubber pad (11) is attached to the inner wall of the connecting steel pipe (9).