Split-flow centrifugal filter mounting structure easy to maintain

Abstract

The utility model discloses an easy to maintain's shunt centrifugal filter mounting structure, shunt centrifugal filter is installed on cylinder body, and it includes shell, filter cover, pivot and filter core, wherein, the filter cover is installed at the lower end part of shell, forms the cavity of assembly filter core, the middle part of pivot and the both ends of filter core are connected, and its both ends are connected shell top and filter cover respectively, and the upper part of pivot is equipped with the oil inlet channel of axial, and a plurality of and oil outlet hole of oil inlet channel intercommunication, the top of shell is equipped with oil inlet channel, the front end of oil inlet channel connects cylinder body's vice oil channel, and the tubular cavity of rear end increases and forms the echelon tubular cavity structure, and the increased end of oil inlet channel is equipped with spring valve, and with oil inlet channel intercommunication. The utility model through bush and pivot rotation connection, make the oil from oil outlet hole shoot out after, more easily drive filter core rotate.

Description

Technical Field

[0001] This utility model relates to the field of filter technology, and in particular to an easy-to-maintain installation structure for a split centrifugal filter. Background Technology

[0002] In the engine lubrication system, the oil filter is used to remove dust, metal shavings and other impurities from the oil to protect the normal operation of the engine. The rotor filter element, also called a centrifugal filter, uses pressurized oil to be sprayed out from the tangential nozzle on the rotor, which drives the inner core to rotate at high speed, separating the impurities in the oil through centrifugal force.

[0003] Diesel engines produce a lot of sludge during operation. A centrifugal filter primarily filters the sludge (carbon black produced by incomplete combustion) from the engine oil. The centrifugal filter needs to be replaced after the vehicle has reached a certain mileage.

[0004] The currently popular top-mounted split-flow centrifugal filter on the market is prone to problems with maintenance due to the vehicle's air pipe layout. When air pipes obstruct the space above the filter, they must be removed for maintenance, resulting in inconvenience and high costs. This patented bottom-mounted split-flow centrifugal filter offers simple and efficient maintenance and repair.

[0005] Existing patent document CN211598785U discloses a rotor filter and an engine having the same. The rotor can change its deformation according to its own weight. When the filter is operating normally, the oil in the drive oil passage can be transmitted to the oil inlet to make the rotor rotate. When the filter needs to be replaced, the rotor filter deforms due to its increased weight, which prevents the oil in the drive oil passage from being transmitted to the oil inlet, thus stopping the rotor from rotating. This achieves a self-diagnostic function.

[0006] Existing patent document CN219826949U discloses a rotor filter element, which adopts a detachable upper cover and lower cover. After the upper cover and lower cover are opened, it is convenient to replace and install the inner core.

[0007] The above background information is provided only to aid in understanding the concept and technical solution of this utility model. It does not necessarily belong to the prior art of this patent application. In the absence of clear evidence that the above information was disclosed on the filing date of this patent application, the above background information should not be used to evaluate the novelty and inventiveness of this application. Utility Model Content

[0008] The main purpose of this utility model is to propose an easy-to-maintain installation structure for a split-flow centrifugal filter to solve the problems of the prior art.

[0009] Therefore, this utility model proposes an easy-to-maintain installation structure for a split-flow centrifugal filter.

[0010] Preferably, the present invention may also have the following technical features:

[0011] An easy-to-maintain centrifugal filter mounting structure is provided. The centrifugal filter is mounted on a cylinder block and includes a housing, a filter cover, a rotating shaft, and a filter element. The filter cover is installed at the lower end of the housing, forming a cavity for assembling the filter element. The middle part of the rotating shaft is connected to both ends of the filter element, and its two ends are respectively connected to the top of the housing and the filter cover. The upper part of the rotating shaft is provided with an axial oil inlet channel and multiple oil outlet holes communicating with the oil inlet channel. The top of the housing is provided with an oil inlet passage. The front end of the oil inlet passage is connected to the auxiliary oil passage of the cylinder block, and the rear end of the passage is enlarged to form a stepped passage structure. The enlarged end of the oil inlet passage is provided with a spring valve and communicates with the oil inlet passage.

[0012] Furthermore, the lower part of the outer casing is provided with an oil outlet, which is connected to the oil return channel of the cylinder block, and the other end of the oil return channel leads to the oil pan.

[0013] Furthermore, the oil return channel and the cylinder block are integrally cast.

[0014] Furthermore, the spring valve includes a spring, an end cap, and a valve core. The valve core, spring, and end cap are sequentially installed in the large end cavity of the oil inlet passage. The end cap is threaded to the end of the large end cavity, and the spring is located between the end cap and the valve core, so that the valve core is subjected to elastic force to abut against the limiting surface of the stepped cavity.

[0015] Furthermore, the outer sides of the top and bottom of the housing are provided with multiple connection holes, and the surface of the cylinder body is provided with screw holes corresponding to the positions of the connection holes.

[0016] Furthermore, the centrifugal filter is bolted to the lower middle part of the cylinder block; the filter cover of the centrifugal filter is close to the upper side of the engine oil pan, and the outer shell is above the filter cover.

[0017] Furthermore, a bushing is installed at the junction of the filter element and the rotating shaft.

[0018] Furthermore, the cylinder block is also equipped with an EWG valve and an oil-gas separator. The EWG valve is installed in the lower left part of the cylinder block, and the oil-gas separator is installed between the EWG valve and the split centrifugal filter.

[0019] The advantages of this invention compared to existing technologies include: The EWG valve was originally installed in the lower middle part of the cylinder block. In this embodiment, the centrifugal filter, which is installed next to the oil cooler (located in the upper right part of the cylinder block), is actually installed at the EWG valve's mounting position. This avoids interference from the intake pipe of the centrally located turbocharger. Furthermore, the filter cover is removed downwards, and the oil pan is located below the cylinder block, providing ample operating space for removing the filter cover and replacing the filter element. In the original installation position of the centrifugal filter, the filter cover was located on the upper part of the outer casing. Removing the filter cover to replace the filter element was interfered with by the turbocharger's intake pipe, requiring the turbocharger's intake pipe to be removed as well, making filter element replacement inconvenient. Attached Figure Description

[0020] Figure 1 This is a cross-sectional view of the centrifugal filter of this utility model.

[0021] Figure 2 This is a layout diagram of the parts of this utility model.

[0022] Figure 3 This is a schematic diagram of the cylinder block of this utility model.

[0023] Figure 4 This is a partial enlarged view of the cylinder block of this utility model.

[0024] Figure 5 This is a structural diagram of the centrifugal filter of this utility model. Detailed Implementation

[0025] The present invention will now be described in further detail with reference to specific embodiments and the accompanying drawings. It should be emphasized that the following description is merely exemplary and not intended to limit the scope and application of the present invention.

[0026] Non-limiting and non-exclusive embodiments will be described with reference to the following figures, wherein the same reference numerals denote the same parts unless otherwise specifically stated.

[0027] like Figure 1-5The illustrated easy-to-maintain centrifugal filter mounting structure shows a centrifugal filter 103 mounted on a cylinder block 107. It includes a housing 9, a filter cover 15, a rotating shaft 6, and a filter element 4. The filter cover 15 is mounted on the lower end of the housing 9, forming a cavity for assembling the filter element 4. The middle of the rotating shaft 6 is connected to both ends of the filter element 4, with the ends connected to the housing 9 and the filter cover 15 respectively via rubber sleeves 5. The upper part of the rotating shaft 6 has an axial oil inlet channel 61 and multiple oil outlet holes 16 communicating with the oil inlet channel 61. The oil pressure ejected from the oil outlet holes 16 drives the filter element 4 to rotate. An improvement in this application is that the top of the housing 9 has an oil inlet channel, one end of which is connected to a secondary oil passage 109 of the cylinder block 107, from which oil is drawn. The secondary oil passage 109 has an oil outlet 22. The upper end of the oil inlet channel 61 is connected to the oil inlet passage, and the oil from the auxiliary oil passage 109 is sent to the oil inlet channel 61 via the oil inlet passage. The lower part of the outer casing 9 is also provided with an oil outlet 18, which is connected to the oil return channel 19 of the cylinder block 109. The other end of the oil return channel 19 leads to the oil pan 104, and the filtered engine oil is drained back to the oil pan 104. Preferably, the oil return channel 19 and the cylinder block 107 are integrally cast.

[0028] In a preferred embodiment, the interior of the oil inlet passage forms a stepped cavity of varying sizes. A spring valve is located at the larger end of the oil inlet passage and communicates with the oil inlet channel 61. The spring valve includes a spring 3, an end cap 1, and a valve core 8. The valve core 8, spring 3, and end cap 1 are sequentially installed in the larger end cavity of the oil inlet passage. The end cap 1 is threaded to the end of the larger end cavity. The spring 3 is located between the end cap 1 and the valve core 8. Under the elastic force of the spring 3, the valve core 8 abuts against the stepped surfaces of the larger and smaller end cavities, forming a simple one-way valve structure. During operation, when the oil pressure is sufficient, the oil pressure pushes the valve core 8 to move, compressing the spring 3 until the oil inlet channel 61 is exposed, allowing engine oil to enter the oil inlet channel 61. Preferably, the oil inlet pipe includes a transverse oil passage 92 and a longitudinal oil passage 91. The lower end of the longitudinal oil passage 91 (the front end of the oil inlet pipe) is provided with an oil inlet 11 that connects to the oil return channel 19 of the cylinder block 107, and the upper end is connected to the front end of the transverse oil passage 92. The transverse oil passage 92 is a stepped cavity, and its rear end (the rear end of the oil inlet pipe) is the large end, and is provided with the spring valve. Preferably, the transverse oil passage 92 and the longitudinal oil passage 91 are process holes, and an end cap 12 is also installed at the upper end of the longitudinal oil passage 91 for sealing. To improve the sealing performance of the outer shell 8 and the filter cover 15, sealing rings (3, 13) are also provided at the two end caps for matching installation. Moreover, the outer shell 9 and the filter cover 15 are connected by a male-female joint, and an installation groove is provided on the outer side of the filter cover 15, and a sealing ring 14 is provided in the installation groove.

[0029] Combination Figure 3-5The outer sides of the top and bottom of the outer casing 9 are provided with multiple connecting holes 23, and the surface of the cylinder body 1 is provided with threaded holes (20, 21) corresponding to the positions of the connecting holes 23. The connecting holes 23 located at the top of the outer casing 9 are used to strengthen the connection between the oil inlet passage 61 and the auxiliary oil passage 109. Preferably, a sealing gasket is provided at the joint between the oil inlet passage and the auxiliary oil passage 109. The connecting holes 23 located at the bottom of the outer casing 9 are used to strengthen the connection between the oil outlet 18 and the oil return passage 19. Preferably, a sealing gasket is provided at the joint between the oil outlet 18 and the oil return passage 19.

[0030] Combination Figure 2 The centrifugal filter 103 is bolted to the lower middle part of the cylinder block 107. The filter cover 15 of the centrifugal filter 103 is close to the upper side of the engine oil pan 104, and the outer shell is above the filter cover, that is, the filter cover 15 is located below the outer shell 9. Specifically, a bushing 7 is installed at the joint between the filter element 4 and the rotating shaft 6. The bushing 7 is rotatably connected to the rotating shaft 6, so that after the oil is ejected from the oil outlet 16, it is easier to drive the filter element 4 to rotate.

[0031] The cylinder block 107 is also equipped with an EWG valve 101 and an oil-gas separator 102. The EWG valve 101 is installed in the lower left part of the cylinder block 107, and the oil-gas separator 102 is installed between the EWG valve 101 and the centrifugal filter 103. The EWG valve 102 was originally installed in the lower middle part of the cylinder block 107. In this embodiment, the centrifugal filter 103, which was installed next to the oil cooler 106 (located in the upper right part of the cylinder block 107), is actually moved down and installed in the original installation position of the EWG valve. On the one hand, this avoids interference with the intake pipe of the centrally located turbocharger. On the other hand, the filter cover 15 can be removed downwards. The oil pan 104 is located below the cylinder block 107, and the oil pan 104 provides a relatively spacious operating space for removing the filter cover 15 and replacing the filter element 4. In the original installation position of the centrifugal filter 103, the filter cover 15 was located on the upper part of the outer shell 9. When the filter cover 15 was removed to replace the filter element 4, it was interfered with by the intake pipe of the turbocharger, which required the turbocharger intake pipe to be removed in order to replace the filter element 4, making maintenance inconvenient.

[0032] Those skilled in the art will recognize that numerous variations are possible with respect to the above description, and the embodiments and figures are merely for describing one or more specific implementations.

[0033] Although exemplary embodiments of the present invention have been described and illustrated, those skilled in the art will understand that various changes and substitutions can be made thereto without departing from the spirit of the present invention. Furthermore, many modifications can be made to adapt specific situations to the doctrine of the present invention without departing from the central concept of the present invention described herein. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but may include all embodiments and equivalents that fall within the scope of the present invention.

Claims

1. An easy-to-maintain split-flow centrifugal filter mounting structure, wherein the split-flow centrifugal filter is mounted on a cylinder block and includes a housing, a filter cover, a rotating shaft, and a filter element, wherein... The filter cover is installed at the lower end of the housing, forming a cavity for assembling the filter element; the middle part of the rotating shaft is connected to both ends of the filter element, and its two ends are respectively connected to the top of the housing and the filter cover, and the upper part of the rotating shaft is provided with an axial oil inlet channel and multiple oil outlet holes communicating with the oil inlet channel. The characteristic is that: the top of the housing is provided with an oil inlet channel, the front end of the oil inlet channel is connected to the auxiliary oil passage of the cylinder block, the rear end of the pipe is enlarged to form a stepped pipe structure, and the enlarged end of the oil inlet channel is provided with a spring valve and communicates with the oil inlet channel.

2. The easy-to-maintain centrifugal filter mounting structure as described in claim 1, characterized in that: The lower part of the outer casing is provided with an oil outlet, which is connected to the oil return channel of the cylinder block, and the other end of the oil return channel leads to the oil pan.

3. The easy-to-maintain split-flow centrifugal filter installation structure as described in claim 2, characterized in that: The oil return channel and cylinder block are integrally cast.

4. The easy-to-maintain split-flow centrifugal filter installation structure as described in claim 1, characterized in that: The spring valve includes a spring, an end cap, and a valve core. The valve core, spring, and end cap are sequentially installed in the large end cavity of the oil inlet passage. The end cap is threaded to the end of the large end cavity, and the spring is located between the end cap and the valve core, so that the valve core is subjected to elastic force to abut against the limiting surface of the stepped cavity.

5. The easy-to-maintain split-flow centrifugal filter installation structure as described in claim 1, characterized in that: The outer sides of the top and bottom of the housing are provided with multiple connection holes, and the surface of the cylinder body is provided with screw holes corresponding to the positions of the connection holes.

6. The easy-to-maintain split-flow centrifugal filter installation structure as described in claim 1, characterized in that: The centrifugal filter is bolted to the lower middle part of the cylinder block; the filter cover of the centrifugal filter is close to the upper side of the engine oil pan, and the outer shell is above the filter cover.

7. The easy-to-maintain split-flow centrifugal filter installation structure as described in claim 1, characterized in that: A bushing is installed at the junction of the filter element and the rotating shaft.

8. The easy-to-maintain split-flow centrifugal filter installation structure as described in claim 1, characterized in that: The cylinder block is also equipped with an EWG valve and an oil-gas separator. The EWG valve is installed in the lower left part of the cylinder block, and the oil-gas separator is installed between the EWG valve and the split centrifugal filter.

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