A diesel particulate filter device with anti-blocking monitoring function

Abstract

The present application relates to a kind of diesel engine particle filter device with anti-blocking monitoring function, including shell, shell side wall is provided with pressure sensor, end is provided with oil inlet and oil outlet, also include filter core assembly and spare filter mechanism, spare filter mechanism is used to enable when filter piece flow drops, supplement oil flow.This filter device is provided with spare filter piece in central cylinder, so that bypass valve opens spare filter piece is put into use, carries out auxiliary filtration, the auxiliary filtration makes the oil of emergency supplement flow can also carry out particle filtering, spare filter piece is put into use with bypass valve opening, this setting makes spare filter piece when not using, vertical setting is in lower cylinder body, spare filter piece two sides do not have pressure difference, during spare, it will not be repeatedly low pressure high pressure oil impact, only when put into use, it is transversely placed in lower cylinder body, and hidden in central cylinder, will not cause the increase of overall device volume.

Description

Technical Field

[0001] This invention belongs to the technical field of diesel engine oil filters, specifically relating to a diesel engine particulate filter device with anti-clogging monitoring function. Background Technology

[0002] The oil filtration device of a diesel engine, also called an oil filter, is used to filter out impurities and particles in the oil, which are then pumped to the parts that need lubrication. However, the filter element of the oil filter has a certain particle carrying capacity. When this carrying capacity reaches a certain level, the filtration flow rate will decrease, but the oil still needs to be delivered. Therefore, oil filters are generally equipped with a bypass valve, which is opened to release the oil when the filter element becomes clogged.

[0003] The bypass valve is only designed to prevent clogging and to supplement the flow when the filter is clogged. However, the oil flowing through the bypass valve is not filtered. The bypass valve only serves as an emergency release valve, which causes some unfiltered oil to participate in lubrication, easily leading to wear. Summary of the Invention

[0004] The purpose of this invention is to provide a diesel engine particulate filter with anti-clogging monitoring function in order to solve the above-mentioned problems.

[0005] The present invention achieves the above objectives through the following technical solutions:

[0006] A diesel engine particulate filter with anti-clogging monitoring function, comprising:

[0007] The housing has a pressure sensor installed on its side wall and an oil inlet and an oil outlet at its end;

[0008] The filter element assembly is located inside the housing and includes a central cylinder and filter elements surrounding the central cylinder. The central cylinder is divided into an upper cylinder and a lower cylinder. The diameter of the upper cylinder is larger than that of the lower cylinder. The surface of the upper cylinder is provided with a through hole, and the outer surface of the lower cylinder is provided with a guide groove. The upper cylinder is connected to the oil outlet, and a bypass valve is provided at the lower end of the lower cylinder.

[0009] The backup filter mechanism is used to replenish the oil flow when the filter flow decreases. It includes a backup filter element disposed in the lower cylinder. The backup filter element is disposed in a basin-shaped bottom shell, which is disposed in the lower cylinder in the shape of a butterfly valve and closes when the bypass valve is opened. The backup filter element is activated after the basin-shaped bottom shell is closed.

[0010] As a further optimization of the present invention, the two ends of the central cylinder are provided with annular clamps for fixing the filter element. The clamps at both ends of the central cylinder facilitate the installation and fixing of the flexible filter element, which is a common structure for filters.

[0011] As a further optimization of the present invention, a base is provided at the bottom of the outer shell. The base is cylindrical and the inner and outer walls are connected by small holes. It is used to allow the oil to enter the bypass valve when the filter is blocked. This structure is the prior art. The purpose is to allow the oil to enter the bypass valve. When the oil cannot pass through the filter to enter the central cylinder (or the flow is insufficient), high pressure is formed outside the filter. This high pressure pushes open the bypass valve to make up for the oil flow.

[0012] As a further optimization of the present invention, limiters are provided at both ends of the bypass valve. The bypass valve is kept normally closed by a tension spring. Common bypass valves are kept normally closed by a spring installed inside the central cylinder. In this solution, in order to leave space in the central cylinder for a spare filter mechanism, an external tension spring is used to keep it normally closed.

[0013] As a further optimization of the present invention, the outer edge of the side wall of the basin-shaped bottom shell is arc-shaped to fit against the inner wall of the lower cylinder and facilitate rotation. A sealing element is provided at the contact point between the outer edge of the basin-shaped bottom shell and the inner wall of the lower cylinder. The bottom wall of the basin-shaped bottom shell has a bottom hole. The basin-shaped bottom shell works similarly to a butterfly valve in the lower cylinder. When the basin-shaped bottom shell is kept closed, that is, when the basin-shaped bottom shell rotates to close the lower cylinder, the standby filter element is put into use. Since the basin-shaped bottom shell has a certain thickness, rotation may be hindered when rotating in the lower cylinder. Therefore, the outer edge of the basin-shaped bottom shell is arc-shaped along its axial direction to facilitate the rotation of the basin-shaped bottom shell.

[0014] As a further optimization of the present invention, the outer edge of the basin-shaped bottom shell is provided with a rotating shaft along the diameter direction of the basin-shaped bottom shell. The rotating shaft passes through the lower cylinder and extends out. One of the rotating shafts is provided with a torsion spring to keep the basin-shaped bottom shell normally closed. A limiting structure is provided at the rotating shaft to limit the rotation range of the basin-shaped bottom shell. The function of the rotating shaft is to rotate the basin-shaped bottom shell. The limiting structure of the rotating shaft controls the rotation range of the basin-shaped bottom shell to 90°, rotating it to be perpendicular or parallel to the lower cylinder.

[0015] As a further optimization of the present invention, the outer wall of the lower cylinder is provided with a closed outer chamber, and an L-shaped rod is slidably arranged in the outer chamber. One end of the L-shaped rod is connected to a bypass valve, and the other end is used to limit one of the rotating shafts. A circular plate is provided at the end of the rotating shaft, and an array of limiting protrusions is provided on the surface of the circular plate. A limiting strip is provided on the surface of the L-shaped rod. The limiting strip is used to insert into the gap of the limiting protrusions to prevent the rotating shaft from rotating. When the bypass valve is opened, the limiting strip is moved away from the limiting protrusions by the L-shaped rod. This solution further optimizes the structure for putting the spare filter into use. When the bypass valve is closed, the rotation of the rotating shaft is restricted by the L-shaped rod and the limiting strip, so that the basin-shaped bottom shell remains open. When the bypass valve is opened by pressure, the limiting strip leaves the contact with the limiting protrusions, so that the torsion spring drives the basin-shaped bottom shell to rotate, blocking the channel of the lower cylinder and putting the spare filter into use.

[0016] The beneficial effects of this invention are as follows:

[0017] This invention features a backup filter element installed inside the central cylinder. When the bypass valve is opened, the backup filter element is put into use for auxiliary filtration. This auxiliary filtration allows for particulate filtration of the oil during emergency flow replenishment. The backup filter element is put into use when the bypass valve is opened. This arrangement ensures that when not in use, the backup filter element is vertically installed inside the lower cylinder, with no pressure difference on both sides. During standby, it is not subjected to repeated low-pressure and high-pressure oil impacts. Only when in use is it placed horizontally inside the lower cylinder and hidden inside the central cylinder, thus not increasing the overall size of the device. Attached Figure Description

[0018] Figure 1 This is a cross-sectional view of the overall structure of the present invention;

[0019] Figure 2 This is the invention Figure 1 External view of the central tube;

[0020] Figure 3 This is the invention Figure 1 Enlarged view of the structure of section A in the middle;

[0021] Figure 4 This is the invention Figure 3 Enlarged view of the structure of section B;

[0022] Figure 5 This is a view of the spare filter element and the basin-shaped bottom shell of the present invention;

[0023] Figure 6 This is a schematic diagram of the circular plate and the limiting protrusion of the present invention;

[0024] In the diagram: 1. Outer shell; 101. Oil inlet; 102. Oil outlet; 103. Base; 2. Pressure sensor; 3. Filter element assembly; 301. Upper cylinder; 302. Lower cylinder; 303. Through hole; 304. Guide groove; 305. Clamping plate; 306. Filter element; 307. Bypass valve; 308. Tension spring; 309. Limiting component; 4. Spare filter element mechanism; 401. Basin-shaped bottom shell; 402. Rotating shaft; 403. Bottom hole; 404. Spare filter element; 405. Circular plate; 406. Limiting protrusion; 407. Outer chamber; 408. L-shaped rod; 409. Torsion spring; 410. Limiting strip. Detailed Implementation

[0025] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0026] Example 1

[0027] like Figure 1-6 As shown, a diesel engine particulate filter with anti-clogging monitoring function includes...

[0028] The housing 1 has a pressure sensor 2 installed on its side wall and an oil inlet 101 and an oil outlet 102 installed at its end;

[0029] The filter element assembly 3 is disposed inside the housing 1 and includes a central cylinder and a filter element 306 surrounding the central cylinder. The central cylinder is divided into an upper cylinder 301 and a lower cylinder 302. The diameter of the upper cylinder 301 is larger than that of the lower cylinder 302. The surface of the upper cylinder 301 is provided with a through hole 303. The outer surface of the lower cylinder 302 is provided with a guide groove 304. The upper cylinder 301 is connected to the oil outlet 102. A bypass valve 307 is provided at the lower end of the lower cylinder 302.

[0030] The backup filter element mechanism 4 is used to replenish the oil flow when the flow rate of the filter element 306 decreases. It includes a backup filter element 404 disposed in the lower cylinder 302. The backup filter element 404 is disposed in the basin-shaped bottom shell 401. The basin-shaped bottom shell 401 is disposed in the lower cylinder 302 in the shape of a butterfly valve and is closed when the bypass valve 307 is opened. The backup filter element 404 is activated after the basin-shaped bottom shell 401 is closed.

[0031] This design incorporates a spare filter element 404 within the central cylinder. When the bypass valve 307 is opened, the spare filter element 404 is activated for auxiliary filtration. This auxiliary filtration ensures that even when the oil flow is replenished in an emergency, particulate filtration process is achieved. The spare filter element 404 is activated when the bypass valve 307 is open. When not in use, the spare filter element 404 is vertically positioned inside the lower cylinder 302. Figure 3 As shown, although it is immersed in engine oil, there is no pressure difference on both sides. During standby, it will not be repeatedly impacted by low-pressure and high-pressure engine oil. It is only placed horizontally in the lower cylinder 302 when it is put into use and hidden inside the central cylinder, so as not to increase the overall size of the device. The pressure sensor is used to monitor the engine oil pressure. When the standby filter mechanism is put into use, it means that the engine oil pressure is sufficient to open the bypass valve 307. When the engine oil pressure is monitored by the pressure sensor 2 and reaches the level to open the bypass valve 307, an external warning is sent to remind the operator to perform engine oil and oil filter maintenance.

[0032] The two ends of the central cylinder are provided with annular clamps 305 for fixing the filter element 306. The clamps 305 at both ends of the central cylinder facilitate the installation and fixing of the flexible filter element 306, which is a common structure for filters.

[0033] The bottom of the outer casing 1 is provided with a base 103, which is cylindrical and has its inner and outer walls connected by small holes. This base 103 is used to allow oil to enter the bypass valve 307 when the filter element 306 is blocked. This structure is existing technology. Its purpose is to allow oil to enter the bypass valve 307. When the oil cannot pass through the filter element 306 to enter the central cylinder (or when the flow rate is insufficient), high pressure is formed outside the filter element 306. This high pressure pushes open the bypass valve 307 to replenish the oil flow.

[0034] Both ends of the bypass valve 307 are provided with limit elements 309. The bypass valve 307 is kept normally closed by a tension spring 308. Common bypass valves 307 are kept normally closed by a spring installed inside the central cylinder. In this solution, in order to leave space inside the central cylinder to install a spare filter mechanism, an external tension spring 308 is used to keep the bypass valve 307 normally closed.

[0035] The outer edge of the basin-shaped bottom shell 401 is arc-shaped to fit against the inner wall of the lower cylinder 302 and facilitate rotation. A sealing element is provided at the contact point between the outer edge of the basin-shaped bottom shell 401 and the inner wall of the lower cylinder 302 to prevent leakage of unfiltered engine oil. The bottom wall of the basin-shaped bottom shell 401 has a bottom hole 403 to support the spare filter element 404. The bottom hole 403 allows engine oil to pass through. The opening and closing process of the basin-shaped bottom shell 401 in the lower cylinder 302 is similar to that of a butterfly valve. When the basin-shaped bottom shell 401 is closed (equivalent to the butterfly valve being closed), that is, when the basin-shaped bottom shell 401 rotates to close the lower cylinder 302, the spare filter element 404 is put into use. Since the basin-shaped bottom shell 401 has a certain thickness, rotation may be hindered in the lower cylinder 302. Therefore, the outer edge of the basin-shaped bottom shell 401 is arc-shaped along its axial direction to facilitate the rotation of the basin-shaped bottom shell 401.

[0036] A rotating shaft 402 is provided on the outer edge of the basin-shaped bottom shell 401 along the diameter direction of the basin-shaped bottom shell 401. The rotating shaft 402 passes through the lower cylinder 302 and extends out. One of the rotating shafts 402 is provided with a torsion spring 409 to keep the basin-shaped bottom shell 401 normally closed. A limiting structure is provided at the rotating shaft 402 to limit the rotation range of the basin-shaped bottom shell 401. The function of the rotating shaft 402 is to rotate the basin-shaped bottom shell 401. The limiting structure of the rotating shaft 402 controls the rotation range of the basin-shaped bottom shell 401 to 90° (this is a common angle limit, which only needs to be set at the starting point and ending point of the rotation of the rotating shaft 402, so it is not shown in the figure), and rotates to be perpendicular or parallel to the lower cylinder 302.

[0037] The lower cylinder 302 has a closed outer chamber 407 on its outer wall. An L-shaped rod 408 is slidably disposed within the outer chamber 407. One end of the L-shaped rod 408 is connected to a bypass valve 307, and the other end is used to limit one of the rotating shafts 402. A circular plate 405 is provided at the end of the rotating shaft 402. The surface of the circular plate 405 is provided with an array of limiting protrusions 406. A limiting strip 410 is provided on the surface of the L-shaped rod 408. The limiting strip 410 is used to insert into the gap of the limiting protrusions 406 to prevent the rotating shaft 402 from rotating. When the bypass valve 307 is opened, the L-shaped rod 408... 08. The limiting strip 410 is moved away from the limiting protrusion 406. This solution further optimizes the structure for putting the spare filter element 404 into use. In the normally closed state of the bypass valve 307, the rotation of the rotating shaft 402 is restricted by the L-shaped rod 408 and the limiting strip 410, so that the basin-shaped bottom shell 401 remains open. When the bypass valve 307 is opened by pressure, the L-shaped rod 408 drives the limiting strip 410 to leave the contact with the limiting protrusion 406, so that the torsion spring 409 drives the basin-shaped bottom shell 401 to rotate, blocking the channel of the lower cylinder 302, thereby putting the spare filter element 404 into use.

[0038] It should be noted that the limiting protrusions 406 are arranged in an array, such as... Figure 6 As shown, the purpose is that after the basin-shaped bottom shell 401 rotates 90°, the array of limiting protrusions 406 will not jam the L-shaped rod 408. Since the bypass valve 307 requires a certain pressure to open, this pressure ensures that there is still a high oil pressure outside the filter element 306. The high oil pressure allows the filter element 306 to continue filtering and continue to exert its remaining value. Therefore, if the L-shaped rod 408 is not jammed during the return process, the bypass valve 307 will still tend to remain normally closed. This tendency requires the oil pressure to push open the bypass valve 307 so that the remaining filtering capacity of the filter element 306 can be utilized.

[0039] The embodiments described above are merely examples of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the protection scope of the present invention.

Claims

1. A diesel engine particulate filter with anti-clogging monitoring function, characterized in that: include The outer casing (1) has a pressure sensor (2) on its side wall and an oil inlet (101) and an oil outlet (102) at its end. The filter element assembly (3) is located inside the housing (1) and includes a central cylinder and a filter element (306) surrounding the central cylinder. The central cylinder is divided into an upper cylinder (301) and a lower cylinder (302). The diameter of the upper cylinder (301) is larger than that of the lower cylinder (302). The surface of the upper cylinder (301) is provided with a through hole (303). The outer surface of the lower cylinder (302) is provided with a guide groove (304). The upper cylinder (301) is connected to the oil outlet (102). The lower end of the lower cylinder (302) is provided with a bypass valve (307). The backup filter mechanism (4) is used to supplement the oil flow when the flow of the filter element (306) decreases. It includes a backup filter element (404) disposed in the lower cylinder (302). The backup filter element (404) is disposed in the basin-shaped bottom shell (401). The basin-shaped bottom shell (401) is disposed in the lower cylinder (302) in the shape of a butterfly valve and is closed when the bypass valve (307) is opened. The backup filter element (404) is activated after the basin-shaped bottom shell (401) is closed. The outer edge of the basin-shaped bottom shell (401) is provided with a rotating shaft (402) along the diameter direction of the basin-shaped bottom shell (401). The rotating shaft (402) passes through the lower cylinder (302) and extends out. One of the rotating shafts (402) is provided with a torsion spring (409) to keep the basin-shaped bottom shell (401) normally closed. A limit structure is provided at the rotating shaft (402) to limit the rotation range of the basin-shaped bottom shell (401). The lower cylinder (302) has a closed outer chamber (407) on its outer wall. An L-shaped rod (408) is slidably arranged in the outer chamber (407). One end of the L-shaped rod (408) is connected to the bypass valve (307), and the other end is used to limit one of the rotating shafts (402). A circular plate (405) is provided at the end of the rotating shaft (402). An array of limiting protrusions (406) is provided on the surface of the circular plate (405). A limiting strip (410) is provided on the surface of the L-shaped rod (408). The limiting strip (410) is used to insert into the gap of the limiting protrusions (406) to prevent the rotating shaft (402) from rotating. When the bypass valve (307) is opened, the limiting strip (410) is moved away from the limiting protrusions (406) by the L-shaped rod (408).

2. A diesel engine particulate filter with anti-clogging monitoring function according to claim 1, characterized in that: The central cylinder is provided with annular clamps (305) at both ends for fixing the filter element (306).

3. A diesel engine particulate filter with anti-clogging monitoring function according to claim 1, characterized in that: The bottom of the housing (1) is provided with a base (103), which is cylindrical and has its inner and outer walls connected by small holes, for allowing oil to enter the bypass valve (307) when the filter element (306) is blocked.

4. A diesel engine particulate filter with anti-clogging monitoring function according to claim 1, characterized in that: Both ends of the bypass valve (307) are provided with limit elements (309), and the bypass valve (307) is kept normally closed by a tension spring (308).

5. A diesel engine particulate filter with anti-clogging monitoring function according to claim 1, characterized in that: The outer edge of the side wall of the basin-shaped bottom shell (401) is arc-shaped, which is used to fit with the inner wall of the lower cylinder (302) and facilitate rotation. A sealing element is provided at the contact point between the outer edge of the basin-shaped bottom shell (401) and the inner wall of the lower cylinder (302). The bottom wall of the basin-shaped bottom shell (401) is provided with a bottom hole (403).

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