CN206190360U - Bypass type diesel oil particulate filter - Google Patents

Abstract

A bypass type diesel particulate filter relates to the technical field of engine exhaust control equipment, including an air intake chamber, an air outlet chamber, and an air inlet and an air outlet correspondingly arranged on the air intake chamber and the air outlet chamber. Several filter tubes are arranged side by side between the air chamber and the air outlet chamber, and each filter pipe is provided with a filter part connected to the filter pipe by flanges at both ends, and a filter element is arranged in the filter part, and the air intake chamber , There is also a bypass pipe between the gas outlet chambers, the bypass pipe is provided with a bypass part connected to the bypass pipe through the flanges at both ends, the bypass part is provided with a normally closed valve, each of the The filter pipe is also provided with a normally open valve and a pressure gauge for detecting and displaying the pressure inside the filter pipe. The normally closed valve, normally open valve and pressure gauge are connected to an external control cabinet. The bypass type diesel particulate filter can replace and clean the filter element after shutdown.

Description

A bypass diesel particulate filter

technical field

The utility model relates to the technical field of engine exhaust control equipment, in particular to a bypass type diesel particle filter.

Background technique

As shown in Figure 1, it is a diesel particulate filter of the prior art, wherein 1' is a filter element, and the diesel particulate filter is mainly used to remove black smoke particles in the exhaust gas of a diesel engine. The black smoke particles in the exhaust gas are filtered and removed. The filter element is used in the diesel particulate filter to filter and intercept the black smoke particles. The filtered black smoke particles will adhere to the surface of the filter element. The pressure rises, which affects the working efficiency of the engine. When the black smoke particles accumulate on the surface of the filter element to a certain extent, the filter element will be clogged. At this time, the engine must be stopped, and then the filter element must be disassembled for replacement or cleaning. After reinstalling, it can be turned on for use. , this method will not only affect the efficiency of the engine, but also poor economy and convenience.

Utility model content

In view of the defects mentioned above in the diesel particulate filter, this application provides a bypass type diesel particulate filter with a reasonable design, which can be replaced and cleaned without engine shutdown. The technical solution is as follows:

A bypass type diesel particulate filter, comprising an air intake chamber, an air outlet chamber, and an air inlet and an air outlet correspondingly arranged on the air intake chamber and the air outlet chamber, and the air inlet chamber and the air outlet chamber are arranged side by side There are several filter tubes, and each filter tube is provided with a filter part connected to the filter tube through the flanges at both ends, and a filter element is arranged in the filter part, and a side filter is arranged between the air inlet chamber and the air outlet chamber. A bypass pipe, the bypass pipe is provided with a bypass portion connected to the bypass pipe through the flanges at both ends, the bypass portion is provided with a normally closed valve, and each filter pipe is also provided with a normally open valve And a pressure gauge for detecting and displaying the pressure in the filter pipe, the normally closed valve, the normally open valve and the pressure gauge are connected to an external control cabinet.

Preferably, the normally open valve on the filter pipe is arranged between the intake chamber and the flange adjacent to the intake chamber.

Preferably, the normally closed valve on the bypass pipe is arranged between the intake chamber and the flange adjacent to the intake chamber.

Preferably, a filter element for filtering black smoke particles is also provided in the bypass portion.

According to the above technical scheme, the utility model adds a bypass pipe on the basis of the existing diesel particulate filter, and controls the opening and closing of the normally open valve and the normally closed valve under the control of the pressure gauge and the control cabinet to control the engine Whether the exhaust gas passes through the filter pipe with the filter element or the bypass pipe effectively solves the problem that the filter element can be replaced and cleaned without stopping the engine when the exhaust back pressure of the engine is too high.

Description of drawings

The utility model will be described in further detail below through specific embodiments in conjunction with the accompanying drawings.

FIG. 1 is a schematic diagram of a diesel particulate filter in the prior art;

Fig. 2 is a schematic diagram of the diesel particulate filter of the present invention.

Among them, 1ˊ, filter element; 1, air intake chamber; 2, air outlet chamber; 3, air inlet; 4, air outlet; 5, filter tube; 51, filter part; 6a, flange; 6b, flange; 7, Filter element; 8. Bypass pipe; 81. Bypass part; 9. Normally closed valve; 10. Normally open valve; 11. Pressure gauge; 12. Control cabinet.

detailed description

The utility model will be described in further detail below through specific embodiments in conjunction with the accompanying drawings.

As shown in Figure 2, a bypass type diesel particulate filter includes an air intake chamber 1, an air outlet chamber 2 and an air inlet 3 and an air outlet 4 correspondingly arranged on the air intake chamber 1 and the air outlet chamber 2, Several filter tubes 5 are arranged side by side between the air intake chamber 1 and the air outlet chamber 2, and each filter pipe 5 is provided with a filter part 51 connected to the filter pipe 5 through the flanges (6a, 6b) at both ends, The filter part 51 is provided with a filter element 7, and a bypass pipe 8 is also provided between the air intake chamber 1 and the air outlet chamber 2, and the bypass pipe 8 is provided with flanges (6a, 6b) passing through both ends. Connect the bypass portion 81 of the bypass pipe 8, the bypass portion 81 is provided with a normally closed valve 9, each of the filter pipes 5 is also provided with a normally open valve 10 and is used to detect and display the pressure in the filter pipe 5 The pressure gauge 11, the normally closed valve 9, the normally open valve 10 and the pressure gauge 11 are connected to an external control cabinet 12. Set an appropriate pressure value for the pressure gauge 11, and rely on the pressure value detected by the pressure gauge 11, the control cabinet 12 controls the closing or opening of the normally open valve 10 and the normally closed valve 9 through an internally set program; when the diesel engine is turned on, The diesel particulate filter is in the working state, and the black smoke particles are filtered through the filter element 7. The black smoke particles will gradually accumulate on the filter element 7, and the exhaust back pressure of the engine will gradually increase. When the pressure gauge 11 detects that the pressure reaches the set value, it will normally The closed valve 9 is automatically opened, the normally open valve 10 is closed, all the air flow will pass through the bypass pipe 8, the exhaust back pressure of the engine is reduced, and the engine can continue to work normally. At this time, the filter element 7 can be disassembled, replaced or cleaned, and the engine does not need shutdown.

Preferably, the normally open valve 10 on the filter pipe 5 is arranged between the intake chamber 1 and the flange 6a adjacent to the intake chamber 1 . When the filter element 7 in the filter tube 5 needs to be replaced due to excessive accumulation of black smoke particles or blockage, the control cabinet 12 controls the normally open valve 10 to take action to close the filter tube due to the accumulation of black smoke particles on the filter element 7 to the set value. 5. Since the normally open valve 10 is located between the intake chamber 1 and the flange 6a adjacent to the intake chamber 1, it is only necessary to directly disassemble the flanges (6a, 6b) and then replace and clean the filter element 7 without passing through Extra equipment blocks the filter pipe 5 to prevent the engine exhaust gas from continuing to discharge.

Preferably, the normally closed valve 9 on the bypass pipe 8 is arranged between the intake chamber 1 and the flange 6a adjacent to the intake chamber 1 . When the filter element 7 in the bypass pipe 8 needs to be replaced due to excessive accumulation of black smoke particles or blockage, the bypass pipe 8 only needs to be closed through the normally closed valve 9 at this time. Between the adjacent flanges 6a of the intake chamber 1, only the flanges (6a, 6b) need to be dismantled directly, and then the filter element 7 should be replaced and cleaned. At this time, there is no need to block the bypass pipe 8 through additional equipment to prevent the engine exhaust from continuing to be discharged .

Preferably, the bypass portion 81 is also provided with a filter element 7 for filtering black smoke particles. A filter element 7 is set in the bypass portion 81. When the filter tube 5 is replaced and the filter core 7 is cleaned, the engine exhaust gas discharged by the bypass tube 8 is also discharged into the atmosphere through the filtering action of the filter core 7 to avoid pollution.

The above uses specific examples to illustrate the utility model, which is only used to help understand the utility model, and is not intended to limit the utility model. For those skilled in the technical field to which the utility model belongs, some simple deduction, deformation or replacement can also be made according to the idea of the utility model.

Claims (4)

1. a kind of bypass type diesel particulate filter, including enter gas storehouse, go out gas storehouse and be correspondingly arranged at it is described enter gas storehouse, go out in gas storehouse Air inlet, gas outlet, it is described enter gas storehouse, go out between gas storehouse to be provided with some screen pipes side by side, set on the every screen pipe There is the filter house that screen pipe is connected by the flange at two ends, be provided with filter core in the filter house, it is characterised in that the air inlet Storehouse, go out between gas storehouse to be additionally provided with bypass pipe, the bypass pipe is provided with the by-pass portion by the flange connecting bypass pipe at two ends, institute State by-pass portion and be provided with normal closed gate, normally opened valve is additionally provided with the every screen pipe and for detecting display screen pipe internal pressure The pressure gauge of power, the switch board outside the connection of described normal closed gate, normally opened valve and pressure gauge.

2. a kind of bypass type diesel particulate filter as claimed in claim 1, it is characterised in that normally opened on the screen pipe Valve is located at into gas storehouse and the flange adjacent with gas storehouse is entered between.

3. a kind of bypass type diesel particulate filter as claimed in claim 2, it is characterised in that normally closed on the bypass pipe Valve is located at into gas storehouse and the flange adjacent with gas storehouse is entered between.

4. a kind of bypass type diesel particulate filter as described in any one of claims 1 to 3, it is characterised in that the side The filter core for filtering black smoke particle is additionally provided with logical portion.