CN201519515U - Cartridge oil filter - Google Patents

Abstract

The utility model provides a filter element type engine oil filter, which belongs to the technical field of machinery. It solves the problems that the existing filter needs to be replaced as a whole when it is replaced, which causes the various parts constituting the filter to be unable to be recycled, difficult to destroy, and pollute the environment. The filter element type oil filter includes a casing and a filter element installed in the casing. One end of the casing is provided with an oil inlet and an oil outlet, and the oil inlet communicates with the oil outlet through the filter element. It is characterized in that the The shell is composed of a shell base and a shell cover. The above-mentioned oil inlet and oil outlet are respectively set at the same end of the shell base. The other end of the shell base is closed by the shell cover, and the two are connected by a detachable seal. The shell of the utility model is composed of a detachable shell cover and a shell seat. As long as the shell cover is detached from the shell seat, the filter element can be taken out, which is convenient for replacement. rate, which is conducive to environmental protection.

Description

Cartridge oil filter

technical field

The utility model relates to an oil filter used in an engine, in particular to a filter element type oil filter, which belongs to the technical field of machinery.

Background technique

During the operation of the engine, foreign impurities (such as dust in the air), metal shavings produced after parts wear, and products of the oxidation process of the engine oil itself (such as various organic acids, coke pitch and carbides) will pollute the lubrication. The engine oil in the system, in order to remove these harmful impurities, thereby protecting the main engine components and prolonging its service life, generally installs a filter in the engine, and filters the harmful impurities in the oil through the filter.

At present, most engines use a suspension-mounted filter, and the oil pump is used to pump the oil from the oil pan into the filter, and the oil filtered by the filter is discharged into the main oil passage of the engine, and supplied to each oil distribution passage. . However, the filter element of this filter cannot be separated from the shell. When the replacement cycle is reached, the filter needs to be replaced as a whole, which makes the various parts of the filter unable to be recycled, and it is difficult to destroy, and it also causes environmental damage. Must be polluted. In addition, because some engine lubricating oil circuits are equipped with a check valve at the oil outlet of the filter to prevent the oil in the main oil passage from returning to the oil pan, this will cause the oil to drain when draining the oil (that is, to drain the oil in the engine oil passage). to the outside of the engine), the oil behind the check valve outlet cannot be discharged, and the impurities in the oil cannot be taken out, so that even after the filter is replaced, the oil in the main oil passage is still not clean; There is no check valve between the cleaner and the main oil passage, and there will be no lubricating oil in the cylinder block, filter and cylinder head when the machine is shut down for a long time.

Contents of the invention

The utility model provides a filter element type engine oil filter capable of replacing the filter element.

The purpose of this utility model can be achieved through the following technical solutions: the filter element type oil filter includes a shell and a filter element installed in the shell, one end of the shell is provided with an oil inlet and an oil outlet, and the oil inlet passes through the filter element It communicates with the oil outlet, and it is characterized in that the shell is composed of a shell base and a shell cover, the above-mentioned oil inlet and oil outlet are respectively arranged at the same end of the shell base, and the other end of the shell base is closed by the shell cover , and the two are connected by a detachable seal.

Before using this element type oil filter, the oil inlet is connected to the oil pump, and the oil outlet is connected to the main oil passage. When working, the oil stored in the engine oil pan is pumped into the oil inlet through the oil pump. Through the filtering effect of the filter element, the impurities are filtered out in the filter, and the filtered oil flows into the main oil passage of the engine block through the oil outlet, and then is supplied to each component that needs to be lubricated or cooled through each oil distribution passage. . The shell of the filter is manufactured separately from the shell cover and the shell base, and then connected and fixed by a detachable structure. When it needs to be replaced, first remove the shell cover from the shell base, so that one end of the shell base is open. , then take out the old filter element, install the new filter element, and finally reconnect the shell cover to the shell base.

In the above-mentioned element type oil filter, the shell cover and the shell base are connected by threads. Threaded construction for easy removal and connection.

In the aforementioned element-type oil filter, a sealing ring is sleeved at the joint between the housing cover and the housing base. Sealing performance can be improved by sealing ring to prevent oil leakage.

In the aforementioned element-type oil filter, the housing cover has a limiting ring capable of abutting against the housing seat. It can prevent the connection strength and sealing performance from being affected by excessive fit between the shell cover and the shell seat.

In the aforementioned filter element type oil filter, a check valve capable of preventing oil from flowing out from the filter element to the oil inlet is fixed between the oil inlet of the housing seat and the filter element. When the filter is used to the replacement period, the oil between the check valve and the main oil passage also contains impurities. When replacing, since the check valve is located in the oil inlet, after taking out the filter element, the check valve can be replaced. The oil between the main oil gallery is discharged cleanly through the oil outlet, and when the engine is running, the oil in the oil gallery behind the check valve can be prevented from flowing back into the oil pan.

In the above-mentioned element type oil filter, an oil discharge pipe communicating with the oil outlet is fixed in the oil inlet of the housing base. The oil outlet of the shell seat is connected with the main oil passage through the oil discharge pipe, and the oil passage is divided into two parts for processing, thereby reducing the manufacturing difficulty of the shell seat.

In the aforementioned element-type oil filter, the output end of the oil discharge pipe has a threaded connection portion. The entire filter is fixed on the engine block through the threaded connection, which is convenient for connection.

In the aforementioned element type oil filter, the oil discharge pipe is made of metal material.

Compared with the prior art, the shell of the filter is composed of a detachable shell cover and a shell seat. The filter element can be taken out as long as the shell cover is detached from the shell seat. It is easy to replace, and the taken out filter element can be completely destroyed. Parts can be recycled, which improves the recovery rate and is conducive to environmental protection; and the sealing connection between the shell cover and the shell seat can prevent oil leakage; in addition, there is a check valve between the oil inlet and the filter element, which not only When oiling, the oil between the check valve and the main oil passage can be kept clean, and when the engine is running, the oil between the check valve and the main oil passage can be prevented from returning to the oil pan to ensure the oil in the oil pan. Oil is not contaminated.

Description of drawings

Fig. 1 is the structural representation of the utility model filter element type oil filter;

Fig. 2 is a schematic diagram of the removed state of the filter element type oil filter.

In the figure, 1 shell seat; 1a oil inlet; 1b oil outlet; 2 shell cover; 2a limit ring; 3 filter element; 4 sealing ring; 5 check valve; valve.

Detailed ways

The following are specific embodiments of the utility model and in conjunction with the accompanying drawings, the technical solution of the utility model is further described, but the utility model is not limited to these embodiments.

As shown in Figure 1, the filter element type oil filter includes a shell composed of a shell cover 2 and a shell base 1. One end of the shell base 1 is threaded to the shell cover 2, and a sealing ring 4 is also provided at the threaded connection. And this end is closed by shell cover 2, and the other end of shell seat 1 has the oil inlet 1a that is used to communicate with engine oil sump and the oil outlet 1b that is used to communicate with engine main oil passage, and filter element 3 (filter element The concrete structure of 3 belongs to prior art, paper filter element is more commonly used), and the bypass valve 7 that connects oil inlet 1a and oil outlet 1b is also housed on filter element 3, so that when filter element clogs, machine oil can be delivered to smoothly. in the main oil passage.

The oil inlet 1a end of the shell base 1 is fixedly connected to the engine. When replacing, as shown in Figure 2, there is no need to remove the shell base 1, as long as the shell cover 2 is unscrewed, one end of the shell base 1 will be opened. Just can take out old filter element conveniently, install new filter element again, finally shell cover 2 is screwed back on the shell seat 1 again and gets final product.

In order to prevent the shell cover 2 from being screwed into the shell base 1 without restriction, resulting in the disengagement of the two threads, a limit ring 2a that can abut against the shell base 1 can be provided on the shell cover 2, so as to ensure a reliable connection between the two .

A check valve 5 that can prevent oil from flowing out from the filter element 3 to the oil inlet 1a can also be set between the oil inlet 1a of the housing 1 and the filter element 3, so as to ensure that it is located in the oil passage behind the check valve when it is shut down for a long time. There will be no lack of oil; at the same time, when the filter element 3 is replaced, the machine oil containing more impurities in the main oil passage can also be discharged through the oil outlet 1b of the housing seat 1.

In order to reduce the manufacturing difficulty of the shell base 1, an oil discharge pipe 6 can be added to be fixed in the oil inlet 1a of the shell base 1 and communicate with the oil outlet 1b, and a threaded connection part 6a can also be processed at the output end of the oil discharge pipe 6 , is directly connected with the engine, and the end surface of the oil inlet 1a on the shell seat 1 can be pressed against the engine through the seal to prevent oil leakage; in order to improve the reliability of oil discharge, the oil discharge pipe 6 can be made of metal materials .

Claims (8)

1. Element-type oil filter, including a casing and a filter element (3) installed in the casing, one end of the casing is provided with an oil inlet (1a) and an oil outlet (1b), and the oil inlet (1a) passes through The filter element (3) communicates with the oil outlet (1b), and it is characterized in that the housing is composed of a housing base (1) and a housing cover (2), and the above-mentioned oil inlet (1a) and oil outlet (1b) They are respectively arranged at the same end of the shell seat (1), and the other end of the shell seat (1) is closed by the shell cover (2), and the two are connected through a detachable seal. 2. The filter element type oil filter according to claim 1, characterized in that, the housing cover (2) is connected to the housing seat (1) through threads. 3. The element-type oil filter according to claim 1, characterized in that, a sealing ring (4) is sleeved at the joint between the housing cover (2) and the housing base (1). 4. The filter element type oil filter according to any one of claims 1-3, characterized in that, the housing cover (2) has a limit ring (2a) that can abut against the housing seat (1) . 5. The filter element type oil filter according to any one of claims 1-3, characterized in that, there is a fixed device between the oil inlet (1a) of the housing seat (1) and the filter element (3) to prevent The check valve (5) through which the oil flows from the filter element (3) to the oil inlet (1a). 6. The filter element type oil filter according to any one of claims 1-3, characterized in that, the oil inlet (1a) of the housing seat (1) is fixed with an oil outlet (1b) communicated with oil drain pipe (6). 7. The element type oil filter according to claim 6, characterized in that, the output end of the oil discharge pipe (6) has a threaded connection portion (6a). 8. The element type oil filter according to claim 6, characterized in that, the oil discharge pipe (6) is made of metal material.

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