CN215213639U

CN215213639U - Semi-automatic cleaning filter

Info

Publication number: CN215213639U
Application number: CN202120602600.0U
Authority: CN
Inventors: 龙烊丞; 陈勇; 王成杰; 龙德瑞; 张帅沛; 宋敏
Original assignee: Weichai Heavy Machinery Co Ltd; Chongqing Weichai Engine Co Ltd
Current assignee: Weichai Heavy Machinery Co Ltd; Chongqing Weichai Engine Co Ltd
Priority date: 2021-03-24
Filing date: 2021-03-24
Publication date: 2021-12-17
Anticipated expiration: 2031-03-24

Abstract

The utility model relates to a semi-automatic cleaning filter belongs to diesel engine filter technical field, including the base, be equipped with two straining a section of thick bamboo, a change-over valve, one of arranging side by side strain the back oil-out, a drain and one strain the hydraulic fluid port that advances, singly strain and be equipped with a filter core in the section of thick bamboo, be equipped with radial blowdown chamber, oil feed chamber, oil outlet chamber, axial blowdown chamber, the control valve core that produces oil and oil feed control valve core on the change-over valve. The utility model discloses a semi-automatic cleaning filter is through controlling control change-over valve to change the interior machine oil flow direction of filter, flow to wash the filter element with controlling machine oil, with the reduction manual cleaning time, and the life of effectual extension filter element.

Description

Semi-automatic cleaning filter

Technical Field

The utility model belongs to the technical field of the diesel engine filter, a semi-automatic cleaning filter is related to.

Background

A diesel filter is a device for cleaning engine oil by intercepting particulate matter in the engine oil through a filter screen. The filter element is a core element of the filter and is composed of a framework and a filter screen, and when liquid flows from one side of the filter screen to the other side, partial impurities in the liquid are intercepted by the filter screen so as to clean the liquid.

The existing filter mainly has: the filter without the automatic cleaning function is used for a period of time, a lot of particulate matters and oil sludge are accumulated on the filter screen to block the filter screen of the filter element, so that the filtering area is reduced, the circulation capacity of the filter is reduced, and the normal use of an engine is influenced; the filter can only take out the filter element for cleaning, and has short cleaning period and troublesome and time-consuming operation. The second is an automatic backwashing filter which adopts a plurality of candle type filter elements which are arranged in parallel, and an electric servo mechanism or a hydraulic motor arranged in the filter element drives a control valve to rotate, thereby stopping the filtration work of part of the filter elements and enabling the engine oil in the part of the filter elements to flow reversely, thereby flushing the filter elements and further keeping the flow area of the filter elements; the filter element has a complex internal structure, high precision requirement of parts and high cost; the representative structure is shown in figure 1, the filter element of the automatic back-flushing filter consists of a plurality of candle type filter element bodies 5 ', each filter element body is an independent filter unit, engine oil enters an oil inlet cavity 10' at the bottom of the filter from an oil inlet 1 ', enters the inner side of the filter element body through an inlet and an outlet 6' in the filter element, and enters a filtered oil cavity 9 'after being filtered by the filter element body 5'; when the engine oil flows to the outside from the inner side of the filter element body 5 ', impurities in the engine oil are intercepted by the filter screen, the impurities are attached to the inner side of the filter element body 5', and the filtered engine oil enters a filtered oil cavity 9 'outside the filter element body and flows out from the oil outlet 2'; when engine oil enters the filter from the oil inlet 1 ', the hydraulic motor 4 ' drives the blow-down valve 8 ' to rotate under the action of the engine oil pressure, the blow-down valve 8 ' blocks the inlet and outlet 6 ' in a small part of the filter element in the rotating process, so that the engine oil cannot flow into the filter element body 5 ', and the filtered engine oil in the filtered oil cavity 9 ' outside the filter element body 5 ' flows into the inner side of the filter element body 5 ' from the outer side of the filter element body 5 ' under the action of the engine oil pressure, so that impurities attached to the inner side of the filter element body 5 ' are washed away. Meanwhile, an inlet and an outlet 6 ' in the filter element are communicated with an inner oil duct 7 ' of the blow-down valve, and the engine oil with impurities flows into the inner oil duct 7 ' of the blow-down valve from an inner channel of the filter element body 5 ' and flows out from a blow-down outlet 3 '. Therefore, the automatic backwashing filter mainly drives the conversion valve to rotate by the hydraulic motor through the transmission mechanism, so that the whole processing precision is high, and the cost of the hydraulic motor or the electric motor is increased; meanwhile, the engine runs all the time in the running process of the engine, the drain outlet of the engine discharges oil continuously, the amount of engine oil entering the engine is reduced, and the conveying capacity of an engine oil pump needs to be increased to ensure the normal running of the engine, so that the cost of the engine oil pump is increased; in addition, the automatic backwashing filter is an integral body, and if the filter breaks down, the automatic backwashing filter can only be stopped for maintenance.

SUMMERY OF THE UTILITY MODEL

In view of this, an object of the present invention is to provide a semi-automatic cleaning filter, which is convenient for users to clean the filter and increases the service time of the filter.

The utility model provides a semi-automatic cleaning filter's rationale is: the control handle is used for controlling the change-over valve, so that the flow direction of the engine oil in the filter is changed, and the engine oil is controlled to flow to wash the filter element of the filter; and the mechanical structure of the change-over valve is used for selectively closing the inlet and outlet channels of the engine oil on one side at the same time, so that the filter element of the engine can be replaced without stopping the engine, and the continuous operation of the equipment is kept.

In order to achieve the above purpose, the utility model provides a following technical scheme:

a semi-automatic cleaning filter comprises a base, wherein two filter cartridges arranged side by side, a change-over valve, a filtered oil outlet, a drain outlet and a filtered oil inlet are arranged on the base; the radial sewage draining cavity is communicated with the axial sewage draining cavity and the sewage draining outlet respectively; the oil outlet after filtration is communicated with the oil outlet cavity, and the oil inlet before filtration is communicated with the oil inlet cavity; the base is also provided with a left oil inlet channel and a right oil inlet channel which can be communicated with the oil inlet cavity, and a left oil outlet channel and a right oil outlet channel which can be communicated with the oil outlet cavity, the left oil inlet channel and the right oil inlet channel are respectively communicated with a left pre-filtering channel and a right pre-filtering channel which are arranged outside the filter element of the filter cartridge on the same side, and the left oil outlet channel and the right oil outlet channel are respectively communicated with a left post-filtering channel and a right post-filtering channel which are arranged in the filter element of the filter cartridge on the same side.

Furthermore, a drain valve is arranged at the drain outlet.

Furthermore, the filter cylinder is provided with an air release screw plug.

Further, the switch valve is provided with an operation handle.

Further, the radial blowdown chamber is located between oil inlet chamber and the oil outlet chamber.

Furthermore, the oil inlet before the filter and the oil outlet after the filter are positioned at the bottom of the base.

Furthermore, the section of the oil outlet control valve core is of a circular and fan-shaped overlapped combined structure.

Furthermore, the end surface of the oil inlet control valve core is of a circular and two-fan-shaped overlapped combined structure.

The beneficial effects of the utility model reside in that:

1. the semi-automatic cleaning filter has a self-cleaning function, can reduce the manual cleaning time, and is beneficial to prolonging the service life of the filter element.

2. The semi-automatic cleaning filter can not only realize single-cylinder work, but also realize filter element replacement without stopping the engine.

3. The semi-automatic cleaning filter realizes the automatic cleaning function of the filter element through the mechanical structure of the change-over valve, does not need to additionally add complex mechanisms and facilities, and has low cost, convenient and reliable operation.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and/or combinations particularly pointed out in the appended claims.

Drawings

For the purposes of promoting a better understanding of the objects, features and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic diagram of an automatic backwash filter according to the prior art;

FIG. 2 is a front view and a partial internal perspective view of the semi-automatic cleaning filter of the present invention;

FIG. 3 is a schematic cross-sectional view of a semi-automatic cleaning filter according to the present invention;

FIG. 4 is a schematic view of a switching valve structure of the semi-automatic cleaning filter of the present invention;

FIG. 5 is a diagram illustrating the operation of the dual cylinders of the semi-automatic cleaning filter of the present invention;

FIG. 6 is a diagram of a single-cylinder cleaning state of the semi-automatic cleaning filter of the present invention;

fig. 7 shows a single-cylinder closed state of the semi-automatic cleaning filter of the present invention.

Reference numerals: 1 'is an oil inlet, 2' is an oil outlet, 3 'is a drain outlet, 4' is a hydraulic motor, 5 'is a filter element body, 6' is an inlet and an outlet inside the filter element, 7 'is an oil duct inside a drain valve, 8' is a drain valve, 9 'is a post-filter oil cavity, and 10' is an oil inlet cavity;

1 is the blowoff valve, 2 is the base, 3 is operating handle, 4 is the filter core, 5 is straining a section of thick bamboo, 6 is the gassing plug screw, 7 is change-over valve, 8 is straining the back oil-out, 9 is the drain, 10 is straining the front oil port, 11 is radial blowdown chamber, 12 left side is strained the front passageway, 13 is left side and is strained the back passageway, 14 is right side and strains the front passageway, 15 is right side and strains the back passageway, 16 is left side oil channel, 17 is right side oil channel, 18 is left side oil channel, 19 is right side oil channel, 20 is the oil feed chamber, 21 is the oil outlet chamber, 22 is axial blowdown chamber, 23 is the oil outlet control case, 24 is the oil feed control case.

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and the features in the following embodiments and examples may be combined with each other without conflict.

Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in any way limiting the scope of the invention; for a better understanding of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "back", etc., indicating directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for convenience of description and simplification of description, but it is not intended to indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore, the terms describing the positional relationships in the drawings are only used for illustrative purposes and are not to be construed as limiting the present invention, and those skilled in the art can understand the specific meanings of the terms according to specific situations.

Referring to fig. 2 to 4, the semi-automatic cleaning filter mentioned in this embodiment adopts a dual-cartridge filter, that is, two sets of filter cartridge 5 and filter element 4 are provided, the filter element 4 and the filter cartridge 5 are fixed on the base 2, the filter cartridge 5 is provided with an air release plug screw 6, the blowoff valve 1 is installed on the base 2 and is communicated with the radial blowoff cavity 11 through a blowoff port 9; the switch valve 7 is mounted on the base 2, the manipulation handle 3 is mounted on the switch valve 7, and the switch valve 7 is constructed (see fig. 4) in which: the position B-B is that the oil inlet control valve core (the cross section of the oil inlet control valve core is shown as a serial number 24 in figure 5), the lower side cavity of the oil inlet control valve core and the base 2 form an oil inlet cavity 20, and the upper side cavity of the oil inlet control valve core and the base 2 form an axial sewage discharging cavity 22 communicated with the radial sewage discharging cavity 11; the position a-a is its oil outlet control valve core (its cross section is shown as 23 in fig. 5), which forms an oil outlet chamber 21 with the base 2.

Referring to fig. 5 to 7, the operation principle of the semi-automatic cleaning filter includes: the device comprises a double-cylinder working state, a single-cylinder cleaning state and a single-cylinder closing state, wherein the specific three states are as follows:

double-cylinder operating state (see fig. 5): two sides of the oil inlet control valve core 24 are communicated with the left oil inlet channel 18 of the base 2 and the right oil inlet channel 19 of the base 2, the axial pollution discharge cavity 22 is sealed, and two sides of the oil outlet control valve core 23 are communicated with the left oil outlet channel 16 and the right oil outlet channel 17 in the base 2. The engine oil enters an oil inlet cavity 20 from a front oil filtering inlet 10 on a base 2, then is divided into two paths, enters a front left side oil filtering channel 12 and a front right side oil filtering channel 14 of a filter cylinder on the left side and the right side respectively from a left side oil inlet 18 and a right side oil inlet 19 of the base, and enters a rear left side oil filtering channel 13 and a rear right side oil filtering channel 15 respectively after being filtered by a filter element 4, impurities in the engine oil are intercepted by the filter elements 4 on the left side and the right side and attached to the outer surfaces of the filter elements 4 on the left side and the right side, the filtered engine oil is converged into an oil outlet cavity 21 through a left side oil outlet 16 and a right side oil outlet 17 of the base 2 respectively, and finally, the filtered oil outlet 8 flows out of a filter.

Single cartridge purge state (see fig. 6): the operating handle 3 is rotated to the left, and the oil inlet control valve core 24 and the oil outlet control valve core 23 are driven to rotate simultaneously through the change-over valve 7. In a certain angle range, the oil inlet control valve core 24 seals and disconnects the oil inlet cavity 20 and the left oil inlet channel 18 of the base 2, and the left oil inlet channel 18 of the base 2 is communicated with the axial pollution discharge cavity 22; meanwhile, two sides of the oil outlet control valve core 23 are communicated with the left oil outlet channel 16 and the right oil outlet channel 17 in the base 2. At this time, the engine oil enters the oil inlet cavity 20 from the oil inlet port 10 and then cannot enter the left oil inlet channel 18 of the base 2, but only flows from the right oil inlet channel 19 of the base 2 to the right filter cartridge 5, and passes through the right filter element 4 through the right filter front channel 14 of the right filter cartridge 5, the filtered engine oil enters the oil outlet cavity 21 from the right filter rear channel 15 of the right filter element 4, and a part of the engine oil flows to the engine through the filtered oil outlet 8, so that the normal operation of the engine is ensured. Meanwhile, since the oil inlet channel 18 on the left side of the base 2 is not filled with oil, and the filter cartridge 5 on the left side is in an empty state, the oil flowing through the oil outlet chamber 21 enters the left filtered channel 13 of the filter cartridge 4 on the left side through the oil outlet channel 16 on the left side, reversely passes through the filter cartridge 4 on the left side, and impacts the impurities attached to the outer surface of the filter cartridge 4 on the left side outwards to clean the filter cartridge 4 on the left side. The engine oil with impurities enters the axial blowdown cavity 22 from the left pre-filter passage 12 and the left oil inlet 18 of the base 2 and flows out of the blowdown valve 1 of the blowdown port 9 through the radial blowdown cavity 11. This process uses the filterable clean machine oil backwash left side filter core of right side filter core, has realized the purpose of self-cleaning left side filter core promptly, has also guaranteed the cleanness of straining back machine oil passageway. Otherwise, the operation handle 3 is rotated to the right side to complete the cleaning of the right filter element, and the working principle is not described in detail.

Single cartridge closed state (see fig. 7): then, the operating handle 3 is rotated to the left to the horizontal position, the change-over valve 7 drives the oil inlet control valve core 24 and the oil outlet control valve core 23 to rotate simultaneously, at this time, the oil inlet control valve core 24 seals and disconnects the oil inlet cavity 20 and the left oil inlet channel 18 of the base 2, and the oil outlet control valve core 23 seals and disconnects the left oil outlet channel 16 of the base 2 and the oil outlet cavity 21. After the engine oil enters the oil inlet cavity 20 from the oil inlet port 10, the left oil inlet channel 18 of the base 2 is sealed by the oil inlet control valve core 24 and can not pass through, the engine oil can only pass from the right oil inlet channel 19 of the base 2 to the right pre-filter channel 14 of the right filter cartridge 5 and is filtered by the right filter element 4 to the right post-filter channel 15 of the right filter element, the filtered engine oil passes from the right oil outlet channel 17 of the base 2 to the oil outlet cavity 21, and the left oil inlet channel 18 is sealed by the oil outlet control valve core 23, so the engine oil can only flow out from the post-filter oil outlet 8. At this time, since the left side oil inlet passage 18 and the left side oil outlet passage 16 of the base 2 are closed, the left side filter cartridge 5 stops operating, and the left side filter cartridge 5 can be replaced. Otherwise, the operation handle 3 is rotated to the right side to the horizontal position, and the filter cartridge 5 on the right side stops working, and the working principle is not described in detail.

Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the scope of the claims of the present invention.

Claims

1. A semi-automatic cleaning filter comprises a base (2) and is characterized in that two filter cartridges (5) which are arranged side by side, a change-over valve (7), a filtered oil outlet (8), a drain outlet (9) and a filtered oil inlet (10) are arranged on the base, a filter element (4) is arranged in each filter cartridge, and a radial sewage discharge cavity (11), an oil inlet cavity (20), an oil outlet cavity (21), an axial sewage discharge cavity (22), an oil outlet control valve core (23) and an oil inlet control valve core (24) are arranged on the change-over valve; the radial sewage draining cavity is communicated with the axial sewage draining cavity and the sewage draining outlet respectively; the oil outlet after filtration is communicated with the oil outlet cavity, and the oil inlet before filtration is communicated with the oil inlet cavity;

the base is further provided with a left oil inlet channel (18) and a right oil inlet channel (19) which can be communicated with the oil inlet cavity, and a left oil outlet channel (16) and a right oil outlet channel (17) which can be communicated with the oil outlet cavity, the left oil inlet channel and the right oil inlet channel are further respectively communicated with a left filtering front channel (12) and a right filtering front channel (14) which are arranged outside the filter element of the filter cartridge of the same-side filter cartridge, and the left oil outlet channel and the right oil outlet channel are further respectively communicated with a left filtering rear channel (13) and a right filtering rear channel (15) which are arranged in the filter element of the same-side filter cartridge.

2. A semi-automatic cleaning filter according to claim 1, characterised in that a blow-off valve (1) is provided at the blow-off outlet.

3. Semi-automatic cleaning filter according to claim 1, characterised in that the cartridge is provided with a bleeder plug (6).

4. Semi-automatic cleaning filter according to claim 1, characterised in that the changeover valve is provided with an operating handle (3).

5. The semi-automatic cleaning filter of claim 1, wherein the radial blowdown chamber is located between the oil inlet chamber and the oil outlet chamber.

6. The semi-automatic cleaning filter of claim 1, wherein the pre-filter oil inlet and the post-filter oil outlet are located at the bottom of the base.

7. The filter of claim 1, wherein the cross section of the oil outlet control valve core is a circular and fan-shaped overlapped combination structure.

8. The filter of claim 1, wherein the end surface of the oil inlet control valve core is in a circular and two-fan-shaped overlapping combination structure.