Filtering device for pre-wetting system of diesel engine

Abstract

The invention discloses a diesel engine pre-wetting system filtering device, which belongs to the technical field of diesel engines, and comprises a four-way joint fixed on an oil drain port of a diesel engine oil pan through a hollow bolt, a rear end connector of the four-way connector is connected with an oil drain outlet of a diesel engine oil pan, a filter screen and a pre-moistening pipe connector are sequentially installed in a right end connector of the four-way connector, and an oil drain plug used for discharging engine oil in the oil pan is installed at the position of a lower end connector of the four-way connector. A screw plug is arranged outside the hollow bolt at the front end joint of the four-way joint; the filter screen is installed at the position of a step in the right end connector of the four-way connector, and one end of the pre-moistening pipe connector is inserted into the right end connector of the four-way connector to be fixed. And the other end of the pre-moistening pipe joint is connected with a pre-moistening oil pipe. The device is small in size and simple in structure, can solve the filtering problem of a diesel engine pre-moistening system, and can also solve the problem that an engine oil filtering device cannot be mounted on a diesel engine with a compact structure.

Description

Technical Field

[0001] The invention relates to the technical field of diesel engines, in particular to a diesel engine pre-lubrication system filtering device. Background Art

[0002] The diesel engine pre-lubrication system mainly supplies lubricating oil to the internal oil passage of the diesel engine in a short period of time before the diesel engine starts, so as to protect the diesel engine from dry friction or semi-dry friction of the moving parts due to the lack of lubricating oil or the lack of effective pressure lubrication in the oil passage at the moment of starting, which may damage the diesel engine. When the diesel engine extracts lubricating oil from the oil pan through the pre-lubrication pump, some harmful impurities will be sucked in, which will damage the parts of the pre-lubrication system. The use of an oil filter device can filter the harmful impurities in the oil and extend the service life of the parts in the pre-lubrication system. However, the existing oil filter devices are large in size and complex in structure, and cannot be installed on compact diesel engines.

[0003] Therefore, it is necessary to develop a diesel engine pre-lubrication system filtering device to prevent damage to the pre-lubrication system components and to extend the service life of the components. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a diesel engine pre-lubrication system filtering device, which has a small size and simple structure. It can not only solve the diesel engine pre-lubrication system filtering problem, but also solve the problem that a compact diesel engine cannot be equipped with an oil filtering device.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: A diesel engine pre-lubrication system filtering device comprises a four-way joint fixed to the oil drain port of the diesel engine oil pan by hollow bolts; the rear end joint of the four-way joint is connected to the oil drain port of the diesel engine oil pan, a filter screen and a pre-lubrication pipe joint are installed in sequence in the right end joint of the four-way joint, an oil drain plug for draining the engine oil in the oil pan is installed at the lower end joint of the four-way joint, and a screw plug is installed outside the hollow bolt at the front end joint of the four-way joint; the filter screen is installed at the step inside the right end joint of the four-way joint, and one end of the pre-lubrication pipe joint is inserted into the right end joint of the four-way joint and fixed; the other end of the pre-lubrication pipe joint is connected to the pre-lubrication oil pipe.

[0006] A further improvement of the technical solution of the present invention is that the filter screen is a structure protruding toward the inside of the four-way joint.

[0007] A further improvement of the technical solution of the present invention is that the edge where the filter screen contacts the step inside the right end joint of the four-way joint is covered and sealed with a rubber pad.

[0008] A further improvement of the technical solution of the present invention is that an annular retaining ring is provided in the middle portion of the outer side of the pre-lubricating pipe joint.

[0009] A further improvement of the technical solution of the present invention is that a first gasket for sealing is arranged between the inner side of the hollow bolt head and the front end joint of the four-way joint.

[0010] A further improvement of the technical solution of the present invention is that a second gasket for sealing is arranged between the screw plug and the outer side of the hollow bolt head.

[0011] A further improvement of the technical solution of the present invention is that a third gasket for sealing is provided at the connection between the oil drain port of the diesel engine oil pan and the rear end joint of the four-way joint; the third gasket is sleeved on the outside of the hollow bolt.

[0012] A further improvement of the technical solution of the present invention is that the outer side of the pre-lubricated pipe joint inserted into the right end joint of the four-way joint is sleeved with a fourth gasket for sealing, and the outer edge of the fourth gasket is pressed by the right end joint of the four-way joint and the annular retaining ring arranged on the outer side of the pre-lubricated pipe joint.

[0013] Due to the adoption of the above technical solution, the technical progress achieved by the present invention is: 1. The present invention fixes a four-way joint on the oil drain port of a diesel engine oil pan through a hollow bolt, fixes a filter screen at one end of the four-way joint through a pre-lubrication pipe joint, connects a pre-lubrication pipe connected to a pre-lubrication pump of a diesel engine pre-lubrication system at the other end of the pre-lubrication pipe joint, installs an oil drain plug at the other end of the four-way joint, and seals the other end of the four-way joint with a screw plug. After the lubricating oil drawn from the oil pan by the pre-lubrication pump passes through the filter screen, the filter screen will filter harmful impurities in the lubricating oil to the oil drain plug, and the impurities can be released through the oil drain plug, thereby effectively preventing harmful impurities in the lubricating oil from damaging the pre-lubrication system components and extending the service life of the diesel engine pre-lubrication system components.

[0014] 2. The present invention has a simple structure, a small overall volume, and multiple functions. It can not only solve the lubricating oil filtering problem of the diesel engine pre-lubrication system, but also solve the problem that the compact diesel engine cannot be installed with an oil filtering device. It is easy to install on a compact diesel engine and has the functions of oil absorption, oil discharge, and filtering. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 The present invention Figure 1 AA cross-sectional view of Among them, 1. four-way joint; 2. hollow bolt; 3. filter; 4. first gasket; 5. screw plug; 6. second gasket; 7. third gasket; 8. fourth gasket; 9. pre-lubricated pipe joint; 10. oil drain plug. DETAILED DESCRIPTION

[0016] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0017] In addition, it should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0018] The present invention is further described in detail below with reference to the accompanying drawings and embodiments: like Figure 1 , 2 As shown, a diesel engine pre-lubrication system filtering device comprises a four-way joint 1 fixed to the oil drain port of the diesel engine oil pan by a hollow bolt 2; the rear end joint of the four-way joint 1 is connected to the oil drain port of the diesel engine oil pan, a filter 3 and a pre-lubrication pipe joint 9 are installed in sequence in the right end joint of the four-way joint 1, an oil drain plug 10 for draining the oil in the oil pan is installed at the lower end joint of the four-way joint 1, and a screw plug 5 is installed outside the hollow bolt 2 at the front end joint of the four-way joint 1; the filter 3 is installed at the step inside the right end joint of the four-way joint 1, and is fixed by inserting one end of the pre-lubrication pipe joint 9 into the right end joint of the four-way joint 1; the other end of the pre-lubrication pipe joint 9 is connected to the pre-lubrication oil pipe.

[0019] Further, such as Figure 2 As shown, the filter 3 is a structure protruding toward the inside of the four-way joint 1, installed in the middle position between the four-way joint 1 and the pre-lubrication pipe joint 9, and is used to filter harmful impurities sucked in by the pre-lubrication pump. The setting of the protruding structure facilitates the impurities to fall into the oil drain plug 10.

[0020] Further, such as Figure 2 As shown, the edge where the filter screen 3 contacts the step inside the right end joint of the four-way joint 1 is covered and sealed with a rubber pad to ensure the sealing effect of the device.

[0021] Further, such as Figure 2 As shown, an annular retaining ring is provided at the middle part of the outer side of the pre-lubricating pipe joint 9 to facilitate the compression of the fourth gasket 8 sleeved on the outside of the pre-lubricating pipe joint 9 to ensure the sealing effect of the device.

[0022] Further, such as Figure 2 As shown, a first gasket 4 for sealing is arranged between the inner side of the head of the hollow bolt 2 and the front end joint of the four-way joint 1 to ensure the sealing effect of the device.

[0023] Further, such as Figure 2 As shown, a second gasket 6 for sealing is arranged between the screw plug 5 and the outer side of the head of the hollow bolt 2 to ensure the sealing effect of the device.

[0024] Further, such as Figure 2 As shown, a third gasket 7 for sealing is provided at the connection between the oil drain port of the diesel engine oil pan and the rear end joint of the four-way joint 1; the third gasket 7 is sleeved on the outside of the hollow bolt 2 to ensure the sealing effect of the device.

[0025] Further, such as Figure 2 As shown, the pre-lubricating pipe joint 9 is inserted into the right end joint of the four-way joint 1, and the outer side of the fourth gasket 8 for sealing is sleeved, and the outer edge of the fourth gasket 8 is pressed by the right end joint of the four-way joint 1 and the annular retaining ring arranged on the outer side of the pre-lubricating pipe joint 4. The other end of the pre-lubricating pipe joint 9 is inserted into the pre-lubricating pipe and can be fixed by a clamp. Because the overall pressure of the diesel engine pre-lubricating system is not large, only 2-3Pa, the above structure can fully realize the extraction of lubricating oil and ensure the sealing effect.

[0026] Specifically, a four-way joint 1 is installed on the oil outlet of the oil pan, and the oil pan can be sucked and drained. The filter screen 3 is designed as a convex structure, and harmful impurities are filtered to the oil drain plug 10 when passing through the filter screen, and the impurities can be discharged through the oil drain plug 10. The edge of the filter screen 3 is coated with a rubber pad for sealing. Compared with welding the filter screen 3 to the part, the part manufacturing process is simple, movable and easy to install.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A diesel engine pre-lubrication system filtering device, characterized in that: The invention comprises a four-way joint (1) fixed to the oil drain port of the diesel engine oil pan by means of a hollow bolt (2); the rear end joint of the four-way joint (1) is connected to the oil drain port of the diesel engine oil pan, a filter screen (3) and a pre-lubrication pipe joint (9) are sequentially installed in the right end joint of the four-way joint (1), an oil drain plug (10) for draining the engine oil in the oil pan is installed at the lower end joint of the four-way joint (1), and a screw plug (5) is installed outside the hollow bolt (2) at the front end joint of the four-way joint (1); the filter screen (3) is installed at the step inside the right end joint of the four-way joint (1), and one end of the pre-lubrication pipe joint (9) is inserted into the right end joint of the four-way joint (1) and fixed; the other end of the pre-lubrication pipe joint (9) is connected to the pre-lubrication oil pipe.

2. A diesel engine pre-lubrication system filter device according to claim 1, characterized in that: The filter screen (3) is a structure that protrudes toward the inside of the four-way joint (1).

3. A diesel engine pre-lubrication system filter device according to claim 1, characterized in that: The edge where the filter screen (3) contacts the step inside the right end joint of the four-way joint (1) is covered and sealed with a rubber pad.

4. A diesel engine pre-lubrication system filter device according to claim 1, characterized in that: An annular retaining ring is provided at the middle portion of the outer side of the pre-lubricating pipe joint (9).

5. A diesel engine pre-lubrication system filter device according to claim 1, characterized in that: A first gasket (4) for sealing is provided between the inner side of the head of the hollow bolt (2) and the front end joint of the four-way joint (1).

6. A diesel engine pre-lubrication system filter device according to claim 1, characterized in that: A second gasket (6) for sealing is provided between the screw plug (5) and the outer side of the head of the hollow bolt (2).

7. A diesel engine pre-lubrication system filter device according to claim 1, characterized in that: A third gasket (7) for sealing is provided at the connection between the oil drain port of the diesel engine oil pan and the rear end joint of the four-way joint (1); the third gasket (7) is sleeved on the outside of the hollow bolt (2).

8. A diesel engine pre-lubrication system filter device according to claim 1, characterized in that: The pre-lubricated pipe joint (9) is inserted into the right end joint of the four-way joint (1) and is sleeved with a fourth gasket (8) for sealing on its outer side, and the outer edge of the fourth gasket (8) is pressed by the right end joint of the four-way joint (1) and the annular retaining ring arranged on the outer side of the pre-lubricated pipe joint (4).

Images