阅读说明：本技术 具有自清洁功能的滤清器 (Filter with self-cleaning function ) 是由 徐庆和 滕斌 左新峰 李永华 于 2020-04-10 设计创作，主要内容包括：本发明属于汽车滤清器技术领域,具体涉及一种具有自清洁功能的滤清器,包括外壳,外壳的上下两端分别设有滤芯上端盖和滤芯下端盖,若干过滤瓷芯固定设置在滤芯上端盖和滤芯下端盖之间,滤芯上端盖和滤芯下端盖上设有与过滤瓷芯对应的通孔,通孔与过滤瓷芯的内腔相连通；外壳内还设有导流管,导流管顶部与滤芯上端盖相连接,导流管内设有叶轮,滤芯下端盖下方设有可转动的隔污板,叶轮与隔污板同轴连接,隔污板上设有径向排列的冲洗口；外壳底部设有集污腔,集污腔底部设有排污口。本发明结构简单,设计合理,使得滤清器具有自清洁功能,大大提高了滤芯的使用寿命,延长了更换周期,节省了资源和成本,提高了社会效益。(The invention belongs to the technical field of automobile filters, and particularly relates to a filter with a self-cleaning function, which comprises a shell, wherein the upper end and the lower end of the shell are respectively provided with a filter element upper end cover and a filter element lower end cover; a flow guide pipe is further arranged in the shell, the top of the flow guide pipe is connected with the upper end cover of the filter element, an impeller is arranged in the flow guide pipe, a rotatable dirt separation plate is arranged below the lower end cover of the filter element, the impeller is coaxially connected with the dirt separation plate, and a flushing port which is arranged in the radial direction is arranged on the dirt separation plate; the bottom of the shell is provided with a sewage collecting cavity, and the bottom of the sewage collecting cavity is provided with a sewage draining outlet. The invention has simple structure and reasonable design, ensures that the filter has self-cleaning function, greatly prolongs the service life of the filter element, prolongs the replacement period, saves resources and cost and improves social benefits.)

1. A filter with self-cleaning function is characterized in that: the filter core comprises a shell (11), wherein the upper end and the lower end of the shell (11) are respectively provided with a filter core upper end cover (2) and a filter core lower end cover (6), a plurality of filter ceramic cores (3) are fixedly arranged between the filter core upper end cover (2) and the filter core lower end cover (6), through holes corresponding to the filter ceramic cores (3) are arranged on the filter core upper end cover (2) and the filter core lower end cover (6), and the through holes are communicated with an inner cavity of the filter ceramic cores (3); a flow guide pipe (4) is further arranged in the shell (11), the top of the flow guide pipe (4) is connected with the filter element upper end cover (2), an impeller (5) is arranged in the flow guide pipe (4), a rotatable dirt separation plate (7) is arranged below the filter element lower end cover (6), the impeller (5) is coaxially connected with the dirt separation plate (7), and flushing ports (15) which are radially arranged are formed in the dirt separation plate (7); the bottom of the shell (11) is provided with a sewage collecting cavity, and the bottom of the sewage collecting cavity is provided with a sewage outlet (16).

2. The filter with self-cleaning function according to claim 1, wherein: and a normally closed electromagnetic valve (9) is arranged at the sewage discharge outlet (16).

3. The filter with self-cleaning function according to claim 1, wherein: and a bypass valve (10) is arranged on the filter element upper end cover (2).

4. The filter with self-cleaning function according to claim 1, wherein: filter core upper end cover (2) top be equipped with the close board subassembly of spiral shell (1), be equipped with inlet port (13) and oil outlet (14) on the close board subassembly of spiral shell (1), inlet port (13) be linked together with the through-hole on filter core upper end cover (2), oil outlet (14) are linked together with honeycomb duct (4).

5. The filter with self-cleaning function according to claim 1, wherein: in the shell (11), a support spring piece (8) is arranged below the lower end cover (6) of the filter element.

6. The filter with self-cleaning function according to claim 1, wherein: and a sealing ring (12) is arranged between the filter element upper end cover (2) and the shell (11) and between the filter element lower end cover (6) and the shell (11).

Technical Field

The invention relates to a filter with a self-cleaning function, and belongs to the technical field of automobile filters.

Background

The filter is an automobile part and is divided into an oil filter, a fuel filter and the like according to different filtering functions. The oil filter is located in the engine lubrication system. The upstream of the engine oil pump is an oil pump, and the downstream of the engine oil pump is various parts needing lubrication in the engine. The oil pan filter has the functions of filtering harmful impurities in the oil from the oil pan, supplying clean oil to the crank shaft, the connecting rod, the cam shaft, the supercharger, the piston ring and other kinematic pairs, and playing roles of lubricating, cooling and cleaning, thereby prolonging the service life of the parts. The fuel filter has the functions of filtering harmful particles and moisture in an engine fuel gas system so as to protect an oil pump nozzle, a cylinder sleeve, a piston ring and the like, reduce abrasion and avoid blockage. However, the service life of the existing filter is generally short, and the filter is replaced more frequently particularly in some heavily polluted environments. Therefore, a filter capable of self-cleaning is developed, and the service life of the filter is prolonged.

Disclosure of Invention

According to the defects in the prior art, the technical problems to be solved by the invention are as follows: the defects of the prior art are overcome, the filter with the self-cleaning function is provided, the service life of the filter is prolonged, and the problems are solved.

The invention relates to a filter with a self-cleaning function, which comprises a shell, wherein the upper end and the lower end of the shell are respectively provided with a filter element upper end cover and a filter element lower end cover; a flow guide pipe is further arranged in the shell, the top of the flow guide pipe is connected with the upper end cover of the filter element, an impeller is arranged in the flow guide pipe, a rotatable dirt separation plate is arranged below the lower end cover of the filter element, the impeller is coaxially connected with the dirt separation plate, and a flushing port which is arranged in the radial direction is arranged on the dirt separation plate; the bottom of the shell is provided with a sewage collecting cavity, and the bottom of the sewage collecting cavity is provided with a sewage draining outlet.

When the engine is started, the engine (fuel) oil containing impurities flows into each filtering ceramic core cavity through the through hole of the upper end cover of the filter element, the filtering ceramic core is of a tubular structure made of ceramics, the impurities larger than the filtering precision are intercepted on the inner wall of the filtering ceramic core, and the filtered engine (fuel) oil seeps out from the outer wall and then is discharged through the guide pipe to enter a motion lubricating pair of other equipment or devices.

In the process, when the machine (fuel) oil passes through the flow guide pipe, the impeller is pushed to rotate, the impeller drives the dirt separation plate to rotate slowly, when the flushing port is aligned with the through hole of the lower end cover of the filter element, the pressure in the cavity of the filter ceramic element is reduced rapidly, impurities intercepted on the inner wall of the filter element fall off from the wall of the ceramic pipe under the action of the internal and external pressure difference of the filter ceramic element, and the oil coming from the upper end is brought into the dirt collection cavity at the bottom of the filter, so that the aim of cleaning the pipe wall is fulfilled.

Preferably, a normally closed electromagnetic valve is arranged at the sewage draining port. The normally closed electromagnetic valve controlled by a relay is installed at the bottom of the filter, and the electromagnetic valve is opened after the engine runs for a certain time to discharge impurities at the bottom.

Preferably, the upper end cover of the filter element is provided with a bypass valve. In the initial stage of the cold start of the engine, the viscosity of engine (fuel) oil is high due to the influence of temperature, the internal pressure of the filter is high, diaphragm type bypass valves are arranged on the upper end covers of the filter elements, and when the internal pressure of the filter is higher than the opening pressure of the bypass valves, the bypass valves are opened to allow the engine (fuel) oil to pass through, so that the filter and the engine are protected.

Preferably, the top of the upper end cover of the filter element is provided with a spiral sealing plate assembly, the spiral sealing plate assembly is provided with an oil inlet hole and an oil outlet hole, the oil inlet hole is communicated with a through hole in the upper end cover of the filter element, and the oil outlet hole is communicated with the flow guide pipe. The screw sealing plate component fixes the filter ceramic core, the filter element upper end cover and the filter element lower end cover in the shell.

Preferably, in the shell, a support spring sheet is arranged below the lower end cover of the filter element. The support spring piece can also prevent that the dirty intracavity greasy dirt of collection from backflowing when playing the supporting role to filter core lower extreme cover, makes the greasy dirt deposit in the casing bottom.

Preferably, a sealing ring is arranged between the upper end cover of the filter element and the shell, and a sealing ring is arranged between the lower end cover of the filter element and the shell.

The impeller of the invention drives the dirt separating plate to rotate, the filtering ceramic cores are cleaned in turn, the electromagnetic valve is opened periodically to discharge oil dirt, and the operation is repeated, so that the service life of the filter core is prolonged.

Compared with the prior art, the invention has the beneficial effects that:

the filter with the self-cleaning function has the advantages of simple structure and reasonable design, so that the filter has the self-cleaning function, the service life of the filter element is greatly prolonged, the replacement period is prolonged, the resource and the cost are saved, and the social benefit is improved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a partial enlarged view of portion A of FIG. 1;

FIG. 3 is a partial enlarged view of portion B of FIG. 1;

FIG. 4 is an enlarged view of a portion of the portion C of FIG. 1;

FIG. 5 is a schematic diagram of filtration;

FIG. 6 is a self-cleaning schematic diagram;

fig. 7 is a schematic view of the arrangement of the filter porcelain cores.

In the figure: 1. a screw plate assembly; 2. an upper end cover of the filter element; 3. filtering the ceramic core; 4. a flow guide pipe; 5. an impeller; 6. a filter element lower end cover; 7. a dirt separation plate; 8. a support spring piece; 9. a normally closed solenoid valve; 10. a bypass valve; 11. a housing; 12. a seal ring; 13. an oil inlet hole; 14. an oil outlet hole; 15. flushing the opening; 16. a sewage draining outlet.

Detailed Description

The invention is further described below with reference to examples:

as shown in fig. 1 to 7, the filter with self-cleaning function of the present invention comprises a housing 11, wherein the upper and lower ends of the housing 11 are respectively provided with a filter element upper end cover 2 and a filter element lower end cover 6, a plurality of filter ceramic cores 3 are fixedly arranged between the filter element upper end cover 2 and the filter element lower end cover 6, the filter element upper end cover 2 and the filter element lower end cover 6 are provided with through holes corresponding to the filter ceramic cores 3, and the through holes are communicated with the inner cavity of the filter ceramic cores 3; a flow guide pipe 4 is further arranged in the shell 11, the top of the flow guide pipe 4 is connected with the upper end cover 2 of the filter element, an impeller 5 is arranged in the flow guide pipe 4, a rotatable dirt separation plate 7 is arranged below the lower end cover 6 of the filter element, the impeller 5 is coaxially connected with the dirt separation plate 7, and a flushing port 15 which is radially arranged is arranged on the dirt separation plate 7; the bottom of the shell 11 is provided with a sewage collecting cavity, and the bottom of the sewage collecting cavity is provided with a sewage outlet 16.

Wherein, a normally closed electromagnetic valve 9 is arranged at the sewage discharge outlet 16.

The filter element upper end cover 2 is provided with a bypass valve 10, preferably a diaphragm type bypass valve.

The spiral sealing plate assembly 1 is arranged above the filter element upper end cover 2, an oil inlet hole 13 and an oil outlet hole 14 are formed in the spiral sealing plate assembly 1, the oil inlet hole 13 is communicated with a through hole in the filter element upper end cover 2, and the oil outlet hole 14 is communicated with the flow guide pipe 4.

In the shell 11, a support spring sheet 8 is arranged below the lower end cover 6 of the filter element.

And a sealing ring 12 is arranged between the filter element upper end cover 2 and the shell 11 and between the filter element lower end cover 6 and the shell 11.

The working principle of the invention is as follows:

when the engine is started, engine (fuel) oil containing impurities enters the filter through the oil inlet hole 13 of the spiral sealing plate, flows into the cavities of the ceramic filter cores 3 along the holes of the filter core upper end cover 2, the ceramic filter cores 3 are tubular structures made of ceramics, the impurities larger than the filter precision are intercepted on the inner walls of the ceramic filter cores 3, the filtered engine (fuel) oil seeps out from the outer walls, and then enters the motion lubrication pair from the oil outlet hole 14 of the spiral sealing plate through the flow guide pipe 4.

At the initial stage of a cold start period of an engine, the viscosity of engine (fuel) oil is high due to the influence of temperature, the internal pressure of the filter is high, a diaphragm type bypass valve is arranged on the upper end cover 2 of the filter element, the bypass valve 10 can be communicated with an oil outlet 14 on the spiral sealing plate, when the internal pressure of the filter is greater than the opening pressure of the bypass valve 10, the bypass valve 10 is opened to allow the engine (fuel) oil to pass through, and then the engine (fuel) oil enters a lubricating pair from the oil outlet 14 of the spiral sealing plate to protect the engine, reduce the pressure and protect the filter.

The filtered machine (fuel) oil enters the lubricating pair from the oil outlet of the spiral sealing plate through the flow guide pipe 4. When machine (fuel) oil passes through the flow guide pipe 4, the impeller 5 is pushed to rotate, the impeller 5 drives the dirt separation plate 7 to rotate slowly, when the flushing port 15 is aligned with the hole of the filter element lower end cover 6, the pressure in the cavity of the filter ceramic element 3 is rapidly reduced, impurities intercepted on the inner wall of the filter element fall off from the wall of the ceramic pipe under the action of the internal and external pressure difference of the filter ceramic pipe, and the oil entering from the oil inlet is brought into the dirt collection cavity at the bottom of the filter, so that the aim of cleaning the pipe wall is fulfilled. The supporting spring pieces 8 prevent oil stains from flowing backwards, so that the oil stains are precipitated at the bottom of the shell. The normally closed electromagnetic valve 9 controlled by a relay is installed at the bottom of the filter, and the electromagnetic valve is opened after the engine runs for a certain time to discharge impurities at the bottom.

The impeller 5 drives the dirt separating plate 7 to rotate, the ceramic cores 3 are cleaned and filtered in turn, the electromagnetic valve is opened periodically to discharge oil dirt, and the operation is repeated, so that the service life of the filter cores is prolonged.