CN105863787A - Particulate filter device - Google Patents

Abstract

The invention discloses a particle filtering device which comprises a filtering component, a branch pipe, a main through valve, a bypass pipe and a bypass valve. The filtering component comprises an air outlet and an air inlet; the branch pipe comprises an inlet, a first outlet and a second outlet; the main through pipe is connected between the filtering component and the branch pipe, and two ends of the main through pipe are respectively communicated with the air inlet and the first outlet; the main through valve is arranged in the main through pipe and selectively switches on and off the conduction between the air inlet and the first outlet; the bypass pipe is connected with the branch pipe, and two ends of the bypass pipe are respectively communicated with the second outlet and the outside; the bypass valve is arranged in the bypass pipe and selectively switches the conduction between the second outlet and the outside. Therefore, the purpose of avoiding the damage of the whole device can be achieved.

Description

particulate filter

technical field

The invention relates to a particle filter device, especially a particle filter device capable of avoiding damage to the whole device.

Background technique

Due to the high thermal efficiency, fuel economy and cheap fuel price of diesel engines, the application range of diesel engines is increasing day by day. Diesel engines can be divided into mobile and stationary diesel engines according to the application occasions. Among them, the mobile ones are vehicles, railways, ships, agricultural machines and stackers, etc., and the fixed ones are generators, stationary power equipment, and engineering equipment. Wait.

As the development of diesel engine technology has reached its limit, engine manufacturers are gradually moving towards improving the after-treatment devices of diesel engines to improve the purification of engine exhaust gas. At present, the most direct and effective way to purify the particulates (such as carbon particulates) in the exhaust exhaust emitted by diesel engines is to install diesel particulate filters (Diesel Particulate Filters, DPF) in the exhaust pipe of diesel vehicles, which can Effectively capture 70% to 90% of the particles in the exhaust gas. The principle is to let the engine exhaust gas pass through the filter element with small and tight pores, and intercept the particles to achieve the filtering function, that is, the filter element of the filter (smoke filter) passes through the filter material. Intercept the particulate matter in the exhaust gas (flue gas) to achieve the function of filtration.

However, after the smoke filter is used for a period of time, the particles will accumulate on the pores of the filter element, which will gradually increase the exhaust back pressure of the engine, reduce the horsepower output of the engine, and easily cause the engine to overheat, which will further increase the Can cause damage to the overall device.

Contents of the invention

The object of the present invention is to provide a particle filter device.

To achieve the above object, the present invention adopts the following technical solutions:

The particle filtering device of the present invention includes a filter component, a branch pipe, a main through pipe, a main through valve, a bypass pipe and a bypass valve.

Wherein, the filter member includes an exhaust port and an air inlet; the branch pipe includes an inlet, a first outlet and a second outlet; the main through pipe is connected between the filter member and the branch pipe, and the main through pipe The two ends of the valve are respectively connected to the air inlet and the first outlet; the main valve is set in the main pipe, and the main valve selectively switches the conduction between the air inlet and the first outlet; the bypass pipe is connected to the branch pipe , and the two ends of the bypass pipe respectively communicate with the second outlet and the outside world; the bypass valve is arranged in the bypass pipe, and the bypass valve selectively switches the conduction between the second outlet and the outside world.

Therefore, through the above structural design, the purpose of avoiding damage to the whole device can be achieved.

The above-mentioned main passage valve and bypass valve are respectively a motor-driven valve;

The particulate filter device also includes a controller, and the main valve and the bypass valve are respectively electrically connected to the controller.

The above-mentioned filter member is composed of a filter, at least one ventilation pipe and an air intake port connected to each other in sequence, and the exhaust port is located on the filter, and the air intake port is located on the air intake port.

Description of drawings

Fig. 1 is a schematic perspective view of a preferred embodiment of the present invention.

Fig. 2 is a schematic diagram of the system configuration of a preferred embodiment of the present invention.

【Symbol Description】

1 Particle filter 2 Filter element 201 Filter 202 Vent connection

203 Air intake port 21 Exhaust port 22 Air intake port 3 Branch pipe

31 Inlet 32 First Outlet 33 Second Outlet 4 Main Manifold

5 Main valve 6 Bypass pipe 7 Bypass valve 8 Controller

detailed description

Please refer to FIG. 1 and FIG. 2 at the same time, wherein FIG. 1 is a perspective view of a preferred embodiment of the present invention, and FIG. 2 is a schematic view of a system configuration of a preferred embodiment of the present invention.

As shown in Figure 1 and Figure 2, there is shown a particle filter device 1, and this particle filter device 1 includes a filter member 2, a branch pipe 3, a main through pipe 4, a main through valve 5, a bypass pipe 6 And a bypass valve 7.

As shown in the figure, the filter member 2 includes an exhaust port 21 and an air inlet 22; the branch pipe 3 includes an inlet 31, a first outlet 32 and a second outlet 33; the main through pipe 4 is connected to the filter member 2 and the branch pipe 3, and the two ends of the main through pipe 4 respectively communicate with the air inlet 22 of the filter member 2 and the first outlet 32 of the branch pipe 3; the main through valve 5 is arranged in the main through pipe 4, and The main valve 5 selectively switches the conduction between the inlet 22 of the filter element 2 and the first outlet 32 of the branch pipe 3; the bypass pipe 6 is connected to the branch pipe 3, and the two bypass pipes 6 The ends communicate with the second outlet 33 of the branch pipe 3 and the outside world; the bypass valve 7 is arranged in the bypass pipe 6, and the bypass valve 7 selectively switches the conduction between the second outlet 33 of the branch pipe 3 and the outside world. Pass.

Therefore, through the above-mentioned structural design, that is, through the design of the two valves of the main through valve 5 and the bypass valve 7, the purpose of avoiding damage to the overall device can be achieved.

In detail, during normal operation, the main valve 5 is opened and the bypass valve 7 is closed. At this time, the exhaust gas passes through the inlet 31 of the branch pipe 3 and flows to the filter member 2 through the main valve 5 for filtering. , That is to say, after the particles (carbon particles) are collected by the filter member 2, they are converted into harmless gases and discharged. Conversely, when there is a problem with the overall device, for example, the filter member 2 accumulates too many particles to cause normal filtration, and therefore the back pressure of the exhaust gas is abnormal, at this time the main valve 5 can be closed and the bypass valve 7 can be opened. The exhaust gas is diverted through the bypass valve 7 and discharged from the bypass pipe 6, so that the overall device can be avoided from being damaged.

The above-mentioned main valve 5 and bypass valve 7 can be controlled manually or automatically. For example, in this embodiment, the main passage valve 5 and the bypass valve 7 are respectively motor-driven valves, and additionally include a controller 8, and the main passage valve 5 and the bypass valve 7 are electrically connected to the controller 8 respectively. . In this way, the controller 8 can control the opening and closing of the main valve 5 and the bypass valve 7 .

The above-mentioned controller 8 can be electrically connected to one or more sensors (not shown), such as temperature sensors, pressure sensors, etc., which can be arranged in different positions of the overall device as required, and the controller 8 can use each Various sensors obtain various data and make comprehensive judgments, and control the opening and closing of the main passage valve 5 and the bypass valve 7 accordingly.

The above-mentioned controller 8 may also have a display module (not shown in the figure) to display various data and/or operating statuses. The above-mentioned controller 8 may also have a memory module (not shown in the figure) to store various data, time and/or operating status, etc.

Also as shown in the figure, in this embodiment, the filter member 2 is made of a filter 201 (such as a ceramic filter, or a filter made of lapis lazuli or metallic iron-chromium-lithium or silicon carbide), At least one air connecting pipe 202 and an air inlet 203 are sequentially connected to each other, and the exhaust port 21 is located on the filter 201 , and the air inlet 22 is located on the air inlet 203 . The above-mentioned at least one ventilation connecting pipe 202 uses three ventilation connecting pipes 202 in this embodiment, and the exhaust gas flows through the three ventilation connecting pipes 202 evenly after being concentrated through the intake guide port 203 .

The above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Anyone skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present invention. Should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the protection scope of the claims.

Claims (3)

1. A particulate filter comprising: A filter element, including an exhaust port and an air inlet; a branch pipe including an inlet, a first outlet and a second outlet; A main through pipe, connected between the filter member and the branch pipe, and the two ends of the main through pipe respectively communicate with the air inlet and the first outlet; a main passage valve, arranged in the main passage pipe, and the main passage valve selectively switches the conduction between the air inlet and the first outlet; a bypass pipe, connected to the branch pipe, and the two ends of the bypass pipe respectively communicate with the second outlet and the outside world; and A bypass valve is arranged in the bypass pipe, and the bypass valve selectively switches the conduction between the second outlet and the outside. 2. The particulate filtering device according to claim 1, wherein the main through valve and the bypass valve are respectively a motor-driven valve; wherein a controller is further included, and the main through valve and the bypass valve are respectively electrically connected to the controller. 3. The particle filter device according to claim 1, wherein the filter member is composed of a filter, at least one ventilation pipe and an air inlet guide connected to each other in sequence, and the exhaust port is located at the filter , the air intake is located on the air intake guide.