CN116116079A - Filter with self-cleaning function - Google Patents

Abstract

The invention discloses a filter with a self-cleaning function, which relates to the technical field of filters and aims to solve the technical problems that impurities filtered out of hydraulic oil in the filter can cause blockage in a filter hole of a filter element in the process of filtering the hydraulic oil for a long time, the filtering of the hydraulic oil is influenced, and the replacement and maintenance of the filter element are time-consuming and labor-consuming; the self-cleaning mechanism is arranged inside the filter element body, the impeller in the self-cleaning mechanism can be driven to rotate by the flowing power of the liquid in the filter element body, so that the installation rod with the hairbrush is driven to rotate, the outer wall of the filter element body is wiped, impurities adhered to the surface of the filter element body are cleaned, the filter holes are prevented from being blocked by the impurities, and the filtering efficiency of the filter element body to the liquid is affected.

Description

A filter with self-cleaning function

technical field

The invention relates to the technical field of filters, in particular to a filter with self-cleaning function.

Background technique

A filter refers to an accessory that filters impurities or gases through filter paper. Generally refers to the car filter, which is an accessory of the engine.

According to different filtering functions, it is divided into: oil filter, fuel filter (gasoline filter, diesel filter, oil-water separator, hydraulic filter), air filter, air conditioning filter, etc. The engine has three types of filters: air, oil, and fuel, generally called "three filters", plus an air conditioning filter, commonly known as four filters. They are respectively responsible for the lubrication system, the medium in the combustion system, the engine intake system, and the filtration of the cabin air circulation system.

The hydraulic oil filter is a device used to filter out solid impurities in the hydraulic system. The quality of hydraulic oil has a great influence on the working performance of the hydraulic system. Many failures are rooted in it. To prevent oil pollution, install hydraulic oil filters in appropriate places, which can trap pollutants in the oil and keep the oil clean. , to ensure the normal operation of the oil system.

Hydraulic oil filters can be divided into surface type, depth type and magnetic filter according to the filter material. Their filtering action on solid pollutants is accomplished by direct interception and adsorption.

The main function of the hydraulic oil filter is to filter the hydraulic oil, and various impurities inevitably appear in the hydraulic system. The main sources are: mechanical impurities remaining in the hydraulic system after cleaning, such as scale, casting sand, welding slag, iron filings, paint, paint skin and cotton yarn scraps, etc. Dust that enters the dust ring, etc.; impurities produced during the working process, such as fragments formed by hydraulic pressure on seals, metal powder produced by relative wear in motion, colloids, asphaltene, carbon residues, etc. produced by oxidation and deterioration of oil . After the above-mentioned impurities are mixed into the hydraulic oil, with the circulation of the hydraulic oil, they will play a destructive role everywhere, seriously affecting the normal operation of the hydraulic system, such as making the small gap (in meters) between the relative moving parts in the hydraulic components and throttling Small holes and gaps are stuck or blocked; destroy the oil film between relative moving parts, scratch the surface of the gap, increase internal leakage, reduce efficiency, increase heat generation, intensify the chemical action of the oil, and deteriorate the oil. According to production statistics, more than 75% of the failures in the hydraulic system are caused by impurities in the hydraulic oil. Therefore, it is very important to maintain the cleanliness of the oil and prevent the pollution of the oil.

At present, during the long-term use of the filter, the filter element of the filter filters the impurities in the hydraulic oil, and the filtered impurities adhere to the outer wall of the filter element. Over time, the surface of the filter element adheres more Impurities will block the filter holes of the filter element and affect the passage of hydraulic oil through the filter element. The filtered hydraulic oil volume cannot meet the needs of use, so it is necessary to manually replace or clean the filter element in the filter, which is time-consuming and laborious. Therefore, it is urgently needed A filter with self-cleaning function is provided to solve the above problems.

Contents of the invention

In view of the filter existing in the prior art in the process of filtering hydraulic oil for a long time, the impurities filtered out of the hydraulic oil will cause blockage in the filter hole of the filter element, affecting the filtration of hydraulic oil, and the replacement and maintenance of the filter element is time-consuming For the problem of labor, the present invention discloses a filter with self-cleaning function. The technical solution adopted is to include a filter body, the filter body includes a front end cover, a filter housing and a rear end cover, The filter housing is a shell with transparent ends, the two ends of the filter housing are respectively provided with the front end cover and the rear end cover, and the filter body is also provided with a filter element body , the filter body is provided with a self-cleaning mechanism, and the filter body is also provided with an auxiliary cleaning mechanism for the filter body.

As a preferred technical solution of the present invention, the front end cover is provided with an oil inlet and an oil outlet, the oil outlet is set at the center of the front end cover, and the oil outlet is also provided with a stopper. return valve.

As a preferred technical solution of the present invention, the filter element body includes a filter element end cover and a filter element housing, the filter element housing is a cylindrical shell with one end transparent, and the filter element housing is provided with the filter element at the transparent end As for the end cover, several filter holes are arranged on the filter element housing, and an oil passage is also arranged on the filter element end cover.

As a preferred technical solution of the present invention, the self-cleaning mechanism includes a rotating shaft, an impeller and a block, the rotating shaft is rotatably connected to the filter element housing, one end of the rotating shaft protrudes from the filter element housing, and is connected to the locking block. block connection, the other end of the rotating shaft is provided with the impeller, the impeller is located in the oil passage, and the rear end cover is also rotatably connected with a rotating column, and the rotating column is provided with the The position of the block is corresponding and the size is matched with the slot, and the rotating column is provided with a brush through the installation rod.

As a preferred technical solution of the present invention, the installation rod is an L-shaped rod, including a horizontal rod and a vertical rod, and the vertical rod of the installation rod corresponds to the position of the filter element housing and is connected to the filter element housing. The brush is also provided on the opposite surface of the filter body, and a self-cleaning mechanism is set inside the filter body, which can drive the impeller in the self-cleaning mechanism to rotate through the power of hydraulic oil flowing in the filter body, and through the rotating shaft and The block transmits this power, drives the rotating column on the rear end cover to rotate, thereby drives the installation rod with a brush to rotate, wipes the outer wall of the filter body, and cleans the impurities adhered to the surface of the filter body to avoid impurities Blocking the filter holes will affect the filtration efficiency of the filter body for hydraulic oil.

As a preferred technical solution of the present invention, the auxiliary cleaning mechanism includes a motor and a controller, an accommodation chamber is opened on the rear end cover, one end of the rotating column is located in the accommodation chamber, and the rotating column is A driven gear is provided, the motor, the controller and a power supply are also provided in the accommodating chamber, the motor is provided with a driving gear meshed with the driven gear, and the controller is provided with A microprocessor, the controller is connected with the motor and power supply.

As a preferred technical solution of the present invention, an electric push rod is also provided in the accommodating chamber, the motor is slidably connected to the rear end cover, the telescopic end of the electric push rod is connected to the motor, and the The electric push rod is connected to the controller, and an auxiliary cleaning mechanism is set on the filter body, and the oil pressure sensor is used to detect the input hydraulic oil pressure in the filter body. When the pressure of the hydraulic oil is detected When the pressure is high, start the motor, drive the rotating column to rotate at an accelerated speed, and wipe and clean the outer wall of the filter body through the brush on the installation rod to avoid affecting the filtration efficiency of hydraulic oil.

As a preferred technical solution of the present invention, an oil pressure sensor is connected to the filter body, the oil pressure sensor is connected to the controller, and a wireless communication module is also provided in the controller.

Beneficial effects of the present invention: by setting a self-cleaning mechanism inside the filter body, the present invention can drive the impeller in the self-cleaning mechanism to rotate through the power of the liquid flow of hydraulic oil in the filter body, and perform cleaning through the rotating shaft and the block. Transmission of this power drives the rotating column on the rear end cover to rotate, thereby driving the installation rod with the brush to rotate, to wipe the outer wall of the filter element body, and to clean the impurities adhering to the surface of the filter element body, so as to prevent impurities from damaging the filter holes. Clogging affects the filtration efficiency of the filter body for hydraulic oil.

Further, an auxiliary cleaning mechanism is set on the filter body, and with the oil pressure sensor, the input hydraulic oil pressure in the filter body can be detected, and when the pressure of the hydraulic oil is detected to be high, it will start The motor drives the rotating column to rotate at an accelerated speed, and wipes and cleans the outer wall of the filter body through the brush on the installation rod to avoid affecting the filtration efficiency of hydraulic oil.

Description of drawings

In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings that need to be used in the description of the specific embodiments or the prior art. Throughout the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, elements or parts are not necessarily drawn in actual scale.

Fig. 1 is a schematic diagram of the internal structure of the present invention;

Fig. 2 is a structural representation of the present invention;

Fig. 3 is a schematic diagram of the structure of the filter element body of the present invention;

Fig. 4 is a partial exploded view of the filter element body of the present invention;

Fig. 5 is a partial sectional view of the filter element body of the present invention;

Fig. 6 is a partially enlarged view of the present invention.

In the figure: 1, filter body; 11, front end cover; 1101, oil inlet; 1102, oil outlet;

12. Filter housing; 13. Rear end cover; 1301. Accommodating cavity; 1302. Rotary column; 1303. Card slot;

1304, installation rod; 1305, brush;

2. Oil pressure sensor;

3. Filter body; 31. Rotating shaft; 32. Impeller; 33. Block; 34. Filter hole; 35. Filter end cover;

36. Filter housing; 37. Oil pipeline;

4. Auxiliary cleaning mechanism; 41. Power supply; 42. Controller; 43. Motor; 44. Electric push rod; 45. Driving gear; 46. Driven gear.

Detailed ways

Example 1

As shown in Figures 1 to 6, the present invention discloses a filter with a self-cleaning function, which is used to solve the problem that the impurities filtered out of the hydraulic oil will cause the filter element to The blockage in the filter hole affects the filtration of hydraulic oil, and the replacement and maintenance of the filter element is time-consuming and laborious. The technical solution adopted is to include the filter body 1, the filter body 1 includes a front cover 11, a filter The filter housing 12 and the rear end cover 13, the filter housing 12 is a shell with transparent ends, the two ends of the filter housing 12 are respectively provided with the front end cover 11 and the rear end cover 13 , the filter body 1 is also provided with a filter body 3, the filter body 3 is provided with a self-cleaning mechanism, and the filter body 1 is also provided with an auxiliary cleaning mechanism for the filter body 3, Through the cooperation of the self-cleaning mechanism and the auxiliary cleaning mechanism, the outer wall of the filter element body 3 is wiped, and the impurities adhering to the surface of the filter element body 3 are cleaned to prevent impurities from blocking the filter hole 34 and affecting the filtration of the hydraulic oil by the filter element body 3 efficiency.

As a preferred technical solution of the present invention, in order to facilitate the filter body 1 to filter the hydraulic oil, the front end cover 11 is provided with an oil inlet 1101 and an oil outlet 1102, and the oil inlet 1101 is set at the filter Between the filter body 1 and the filter body 3, when the hydraulic oil to be filtered enters the filter body 1 through the oil inlet 1101, the hydraulic oil is located in the cavity between the filter body 1 and the filter body 3. The oil enters the filter element body 3 and is discharged from the oil outlet 1102 on the filter body 1 to complete the filtration of hydraulic oil. The oil outlet 1102 is located at the center of the front end cover 11, and the outlet A check valve is also provided on the oil port 1102 .

As a preferred technical solution of the present invention, the filter element body 3 includes a filter element end cover 35 and a filter element housing 36, the filter element housing 36 is a cylindrical shell with one end transparent, and the transparent end of the filter element housing 36 is The filter element end cover 35 is provided, and the filter element housing 36 is provided with several filter holes 34, the filter holes 34 are arranged on the side wall of the filter element housing 36, and the filter element end cover 35 is also provided with an oil passage 37, When the filter body 3 is installed, the front end cover 11 and the rear end cover 13 of the filter body 1 compress and fix the filter body 3 to prevent the filter body 3 from shaking in the filter body 1 .

As a preferred technical solution of the present invention, in order to solve the problem of affecting the filter efficiency of the filter body 1 for hydraulic oil when the filter hole 34 on the filter body 3 is blocked by impurities, a self-cleaning mechanism is provided on the filter body 3; The self-cleaning mechanism includes a rotating shaft 31, an impeller 32 and a block 33. The rotating shaft 31 is rotatably connected to the filter element housing 36. A sealing ring is also provided between the rotating shaft 31 and the filter element housing 36. One end of the rotating shaft 31 protrudes The filter housing 36 is connected to the block 33, the other end of the rotating shaft 31 is provided with the impeller 32, the impeller 32 is located in the oil passage 37, when the filtered hydraulic oil passes through When passing through the oil pipeline 37, the power of the hydraulic oil flow will drive the impeller 32 to rotate. The rear end cover 13 is also rotatably connected with a rotating column 1302, and a bearing seat is arranged between the rotating column 1302 and the rear end cover 13. The rotating column 1302 is provided with a locking groove 1303 corresponding to the location and size of the locking block 33 , and the rotating column 1302 is provided with a brush 1305 via a mounting rod 1304 .

As a preferred technical solution of the present invention, in order to facilitate the cleaning of impurities on the filter housing 36, the installation rod 1304 is an L-shaped rod, including a horizontal rod and a vertical rod, and the vertical rod of the installation rod 1304 is connected to the The position of the filter housing 36 is corresponding, and the brush 1305 is also provided on the surface opposite to the filter housing 36 .

As a preferred technical solution of the present invention, during the long-term working process of the filter body 1, the filtered impurities gradually increase, and only relying on the power of hydraulic oil to drive the brush 1305 is not enough to support the outer wall of the filter element housing 36. Clean up the impurities adhered to the filter body 1. An auxiliary cleaning mechanism 4 is added to the filter body 1. The auxiliary cleaning mechanism 4 includes a motor 43 and a controller 42. The rear end cover 13 is provided with a housing cavity 1301. One end of the rotating column 1302 is located in the accommodating chamber 1301, the driven gear 46 is arranged on the rotating column 1302, the motor 43, the controller 42 and the power supply 41 are also arranged in the accommodating chamber 1301 , the motor 43 is provided with a drive gear 45 meshing with the driven gear 46 , the controller 42 is provided with a microprocessor, and the controller 42 is connected with the motor 43 and the power supply 41 .

As a preferred technical solution of the present invention, in order to make the device more intelligent, an oil pressure sensor 2 is externally connected to the filter body 1 to detect the oil pressure between the inner wall of the filter body 1 and the outer wall of the filter element body 3. When the pressure increases, it means that there are more impurities adhered to the filter element body 3, which affects the filtration of hydraulic oil; an electric push rod 44 is also provided in the accommodating chamber 1301, and the motor 43 is slidably connected to the rear end On the cover 13, the telescopic end of the electric push rod 44 is connected to the motor 43, the electric push rod 44 is connected to the controller 42, and the oil pressure sensor 2 is also connected to the filter body 1 , the oil pressure sensor 2 is connected to the controller 42, the controller 42 is also provided with a wireless communication module, the wireless communication module can use 2.4GHz wireless bluetooth communication.

Working principle of the present invention: when in use, the hydraulic oil to be filtered is passed into the filter body 1 from the oil inlet 1101 on the front end cover 11, and the hydraulic oil enters the filter element through the filter hole 34 on the filter element housing 36 Inside the casing 36, when the hydraulic oil passes through the filter hole 34, the filter element casing 36 can filter the impurities in the hydraulic oil, and the hydraulic oil entering the filter element casing 36 passes through the oil passage 37 on the filter element end cover 35, and is discharged from the filter The oil outlet 1102 on the device body 1 is discharged. When the hydraulic oil passes through the oil pipeline 37, the power of the hydraulic oil flow drives the impeller 32 to rotate, thereby driving the rotating shaft 31 to rotate. The rotating shaft 31 passes through the block 33 and the card slot. The cooperation of 1303 transmits this power to the rotating column 1302, drives the rotating column 1302 to rotate, thereby drives the mounting rod 1304 to rotate, and cleans the impurities adhered on the filter element housing 36 through the brush 1305 to avoid blocking the filter hole 34.

Along with the increase of the hydraulic oil filtration time, more and more impurities are filtered out, and when the rotation speed of the hairbrush 1305 is not enough to clean up the impurities adhered on the filter element housing 36, the hydraulic oil passing through the filter hole 34 decreases, but from the inlet The hydraulic oil to be cleaned and filtered input at the oil port 1101 does not decrease, which will increase the pressure of the hydraulic oil between the filter body 3 and the filter body 1. When the microprocessor in the controller 42 detects the pressure through the oil pressure sensor 2 When the pressure of the hydraulic oil between the filter element body 3 and the filter body 1 increases, the motor 43 is controlled to rotate, driving the drive gear 45 to rotate, and the electric push rod 44 is controlled to work and elongate, driving the motor 43 to move to the rotating column 1302, Make the driving gear 45 contact with the driven gear 46 on the rotating column 1302, and drive the rotating column 1302 to rotate at an accelerated speed through the driven gear 46, thereby accelerating the brush 1305 on the installation rod 1304 to clean up the impurities on the filter element housing 36, so as to Maintain the filtration rate of the filter body 1 for hydraulic oil.

The circuit connection involved in the present invention is a common means used by those skilled in the art, and the technical inspiration can be obtained through a limited number of tests, which belongs to common knowledge.

The microprocessor involved in the present invention adopts the Atmel 89C51 single-chip microcomputer, which is used to start and stop the electric push rod and the motor. Those skilled in the art can refer to teaching materials or technical manuals published by manufacturers to obtain technical inspiration.

Components not specified herein are prior art.

Although the above-mentioned specific embodiments of the present invention have been described in detail, the present invention is not limited to the above-mentioned embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art, various The modification or deformation without creative work is still within the protection scope of the present invention.

Claims (8)

1. A filter with self-cleaning function, characterized in that: it includes a filter body (1), and the filter body (1) includes a front cover (11), a filter housing (12) and The rear end cover (13), the filter housing (12) is a shell with two ends transparent, and the two ends of the filter housing (12) are respectively provided with the front end cover (11) and the The rear end cover (13), the filter body (1) is also provided with a filter body (3), the filter body (3) is provided with a self-cleaning mechanism, and the filter body (1) is An auxiliary cleaning mechanism for the filter core body (3) is also provided. 2. A filter with self-cleaning function according to claim 1, characterized in that: the front cover (11) is provided with an oil inlet (1101) and an oil outlet (1102), the The oil outlet (1102) is arranged at the center of the circle of the front end cover (11), and the oil outlet (1102) is also provided with a check valve. 3. A filter with self-cleaning function according to claim 1, characterized in that: the filter element body (3) includes a filter element end cover (35) and a filter element housing (36), and the filter element housing ( 36) is a transparent cylindrical shell at one end, the transparent end of the filter element housing (36) is provided with the filter element end cover (35), and the filter element housing (36) is provided with some filter holes (34 ), the filter element end cover (35) is also provided with an oil passage (37). 4. A filter with self-cleaning function according to claim 3, characterized in that: the self-cleaning mechanism includes a rotating shaft (31), an impeller (32) and a block (33), and the filter element housing (36) is rotatably connected with the rotating shaft (31), one end of the rotating shaft (31) protrudes from the filter element housing (36), and is connected with the block (33), the other end of the rotating shaft (31) The impeller (32) is arranged on it, and the impeller (32) is located in the oil passage (37), and the rear end cover (13) is also rotatably connected with a rotating column (1302), and the rotating column (1302) is provided with a slot (1303) corresponding to the location of the block (33) and matched in size, and the rotating column (1302) is provided with a brush (1305) through the installation rod (1304). 5. A filter with self-cleaning function according to claim 4, characterized in that: the installation rod (1304) is an L-shaped rod, including a horizontal rod and a vertical rod, and the installation rod (1304) The vertical bar corresponds to the position of the filter element casing (36), and the brush (1305) is also provided on the surface opposite to the filter element casing (36). 6. A filter with self-cleaning function according to claim 4, characterized in that: the auxiliary cleaning mechanism (4) includes a motor (43) and a controller (42), and the rear end cover ( 13) There is an accommodation cavity (1301), one end of the rotating column (1302) is located in the accommodation cavity (1301), and a driven gear (46) is arranged on the rotating column (1302). The cavity (1301) is also provided with the motor (43), the controller (42) and the power supply (41), and the motor (43) is provided with a drive gear meshed with the driven gear (46). A gear (45), a microprocessor is arranged in the controller (42), and the controller (42) is connected with the motor (43) and the power supply (41). 7. A filter with self-cleaning function according to claim 6, characterized in that: an electric push rod (44) is also provided in the accommodating cavity (1301), and the motor (43) is slidingly connected On the rear end cover (13), the telescopic end of the electric push rod (44) is connected to the motor (43), and the electric push rod (44) is connected to the controller (42). 8. A filter with self-cleaning function according to claim 7, characterized in that: the filter body (1) is also connected with an oil pressure sensor (2), the oil pressure The sensor (2) is connected with the controller (42), and a wireless communication module is also arranged in the controller (42).

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