CN220877934U - Backwashing filter - Google Patents

Abstract

The utility model discloses a backwashing filter, which comprises a lower filter shell, wherein the upper end of the lower filter shell is connected with a filter head in a threaded connection mode, an L-shaped inlet channel and an L-shaped outlet channel are arranged on the filter head, a connecting pipe communicated with the L-shaped outlet channel is arranged in the middle of the lower surface of the filter head, a through hole is uniformly arranged in the middle of the side surface of the connecting pipe, a conversion connecting seat capable of sliding up and down is arranged on the outer side of the connecting pipe, a filter core barrel is connected to the lower surface of the conversion connecting seat, a conversion sealing piece is arranged between the outer side of the lower end of the filter core barrel and the lower filter shell, a reset spring is arranged between the lower surface of the filter core barrel and the inner bottom surface of the lower filter shell, a drain pipe is fixed in the center of the lower surface of the filter core barrel, and a guide hole is uniformly arranged on the outer side of the upper end of the drain pipe.

Description

Backwashing filter

Technical Field

The utility model relates to the technical field of filters, in particular to a backwashing filter.

Background

The heavy oil filter that uses at present, heavy oil from the oil inlet direct filtration to rather than the oil-out that corresponds, parallel flow, the filter effect is poor, often stop work because of blockking up the fuel oil ware to need open the gland on the casing when inspecting or washing the filtration impurity and handle, waste time and energy, consequently need a large amount of manpowers and time, and ordinary back flush filter need dismantle, perhaps carry out to the connection with the import of device, consequently wash inconvenient, can not satisfy people's demand.

Disclosure of utility model

The utility model aims to overcome the existing defects, and provides the backwashing filter which is simple in structure and convenient to operate, not only can the filter be quickly cleaned, but also the filter element can be prevented from being disassembled and assembled, a great amount of manpower is saved, and the problems in the background technology can be effectively solved.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a backwash filter, includes the filter inferior valve body, the upper end of filter inferior valve body is connected with the filter head through threaded connection's mode, is equipped with L type inlet channel and L type outlet channel on the filter head, is equipped with the connecting pipe with L type outlet channel intercommunication in the middle of the lower surface of filter head, evenly is equipped with the through-hole in the middle of the side of connecting pipe, and the outside of connecting pipe is equipped with the gliding conversion connecting seat from top to bottom, the lower surface of conversion connecting seat is connected with the filter core bucket, and the lower extreme outside of filter core bucket is equipped with conversion sealing member with the filter inferior valve body, is equipped with reset spring between the lower surface of filter core bucket and the inside bottom surface of filter inferior valve body, the lower surface center of filter core bucket is fixed with the blow off pipe, the upper end outside of blow off pipe evenly is equipped with the derivation hole, the lower extreme of blow off pipe runs through and extends to the outside of filter inferior valve body, the one end that the blow off pipe is located the filter core bucket outside is equipped with the nut.

Further, the conversion connecting seat comprises a connecting ring which is in sliding connection with the connecting pipe, the section of the connecting ring is of a boss-shaped structure, a sealing ring II is arranged between the inner side of the connecting ring and the connecting pipe, the edge of the lower surface of the connecting ring is of a conical structure, a sealing ring III is arranged on the conical surface of the connecting ring, and a sealing conical inclined surface corresponding to the sealing ring III is arranged at the upper end of the inner side of the lower shell of the filter.

Further, the sealing ring is arranged at the joint of the drain pipe and the lower filter shell, and the drain pipe and the lower filter shell can be sealed through the sealing ring, so that the leakage of the joint of the drain pipe and the lower filter shell is avoided.

Further, the conversion sealing member includes the sealing connection ring of the inside lower extreme of casing under with the filter and is connected, sealing connection ring and filter casing body coupling under, the lower extreme outside of filter core bucket is equipped with annular groove, the inside of annular groove is equipped with the sealing ring IV, the sealing ring IV is corresponding with sealing connection ring, during the filtration, can drive filter core bucket and conversion connecting seat upward movement through the blow off pipe, simultaneously the sealing ring IV with sealing connection ring sealing connection, conversion connecting seat moves to the through-hole upper end of connecting pipe, and L type inlet channel and the outside intercommunication of filter core bucket, and L type outlet channel and the inside intercommunication of filter core bucket, the filtrate enters into between filter core bucket and the filter casing under through L type inlet channel, can filter the filtrate through the filter core bucket, liquid after the filtration is exported through L type outlet channel, during the back flush, drive filter core bucket and conversion connecting seat down to make conversion connecting seat remove the through-hole lower extreme of connecting pipe, and through the sealing conical inclined connection of sealing ring III and filter casing under, consequently, L type outlet channel, L type inlet channel and filter core bucket's inside intercommunication, L type inlet channel and filter core bucket, simultaneously four and sealing connection ring IV are separated with the sealing connection ring, the filter core bucket outside through the L type inlet channel is washed out, the outside through the filter core channel, the flushing channel is washed to the outside when the filter core is washed.

Compared with the prior art, the utility model has the beneficial effects that: the filter core barrel and the conversion connecting seat are driven to move downwards through the drain pipe, so that the conversion connecting seat moves to the lower end of the through hole of the connecting pipe, and the through hole is connected with the sealing conical inclined surface of the lower filter shell through the sealing ring III, so that the L-shaped outlet channel, the L-shaped inlet channel and the filter core barrel are communicated, the sealing ring IV is separated from the sealing connecting ring, the drain pipe is connected with the outer side of the filter core barrel, the L-shaped outlet channel is closed during flushing, flushing liquid enters the inner side of the filter core barrel through the L-shaped inlet channel, so that the outer side of the filter core barrel is flushed, and the flushed water is discharged through the drain pipe.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic diagram of a filtering process according to the present utility model;

FIG. 3 is a schematic diagram of the backwash flow structure of the present utility model.

In the figure: 1 reset spring, 2 filter head, 3 filter lower shell, 4L type inlet channel, 5 type L type outlet channel, 6 type connecting tube, 7 type switching connecting seat, 71 type connecting ring, 72 type sealing ring II, 73 type sealing ring III, 8 type filter element barrel, 9 type drain pipe, 10 type switching sealing member, 101 type sealing connecting ring, 102 type sealing ring IV, 11 type nut and 12 type sealing ring.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-3, the present utility model provides a technical solution: a back flushing filter comprises a filter lower shell 3, wherein the upper end of the filter lower shell 3 is connected with a filter head 2 in a threaded connection mode, an L-shaped inlet channel 4 and an L-shaped outlet channel 5 are arranged on the filter head 2, a connecting pipe 6 communicated with the L-shaped outlet channel 5 is arranged in the middle of the lower surface of the filter head 2, through holes are uniformly arranged in the middle of the side surfaces of the connecting pipe 6, a conversion connecting seat 7 capable of sliding up and down is arranged on the outer side of the connecting pipe 6, a filter element barrel 8 is connected to the lower surface of the conversion connecting seat 7, the filter element barrel 8 is fixedly connected with the conversion connecting seat 7, the conversion connecting seat 7 can move along with the filter element barrel 8 when the filter element barrel 8 moves downwards due to the fixed connection of the filter element barrel 8, a conversion sealing piece 10 is arranged between the outer side of the lower end of the filter element barrel 8 and the filter lower shell 3, a reset spring 1 is arranged between the lower surface of the filter element barrel 8 and the inner bottom surface of the filter lower shell 3, a drain pipe 9 is fixed in the center of the lower surface of the filter element barrel 8, a guiding hole is uniformly arranged on the outer side of the upper end of the drain pipe 9, the lower end of the drain pipe 9 penetrates through and extends to the outer side of the filter lower shell 3, a nut 11 is arranged at one end of the drain pipe 9, which is positioned on the outer side of the filter element barrel 8, a conversion connecting seat 7 comprises a connecting ring 71 which is in sliding connection with the connecting pipe 6, the cross section of the connecting ring 71 is of a boss-shaped structure, a sealing ring II 72 is arranged between the inner side of the connecting ring 71 and the connecting pipe 6, the edge of the lower surface of the connecting ring 71 is of a conical structure, a sealing ring III 73 is arranged on the conical surface of the connecting ring 71, a sealing conical inclined surface corresponding to the sealing ring III 73 is arranged at the inner side upper end of the filter lower shell 3, a sealing ring 12 is arranged at the connecting position of the drain pipe 9 and the filter lower shell 3, the drain pipe 9 and the filter lower shell 3 can be sealed through the sealing ring 12, thereby avoiding leakage at the joint of the drain pipe 9 and the filter lower shell 3, the conversion sealing member 10 comprises a sealing connecting ring 101 connected with the lower end of the inner part of the filter lower shell 3, the sealing connecting ring 101 is integrally connected with the filter lower shell 3, an annular groove is arranged at the outer side of the lower end of the filter element barrel 8, a sealing ring IV 102 is arranged in the annular groove, the sealing ring IV 102 corresponds to the sealing connecting ring 101, the filter element barrel 8 and the conversion connecting seat 7 can be driven to move upwards through upward movement of the drain pipe 9 during filtration, the sealing ring IV 102 is in sealing connection with the sealing connecting ring 101, the conversion connecting seat 7 moves to the upper end of a through hole of the connecting pipe 6, the L-shaped inlet channel 4 is communicated with the outer side of the filter element barrel 8, the L-shaped outlet channel 5 is communicated with the inner part of the filter element barrel 8, filtrate enters between the filter core barrel 8 and the filter lower shell 3 through the L-shaped inlet channel 4, the filtrate can be filtered through the filter core barrel 8, filtered liquid is led out through the L-shaped outlet channel 5, during back flushing, the filter core barrel 8 and the conversion connecting seat 7 are driven by the drain pipe 9 to move downwards, so that the conversion connecting seat 7 moves to the lower end of the through hole of the connecting pipe 6 and is connected with the sealing conical inclined surface of the filter lower shell 3 through the sealing ring III 73, therefore, the L-shaped outlet channel 5, the L-shaped inlet channel 4 and the inside of the filter core barrel 8 are communicated, the sealing ring IV 102 is separated from the sealing connecting ring 101, the drain pipe 9 is connected with the outside of the filter core barrel 8, the L-shaped outlet channel 5 is closed during flushing, flushing liquid enters into the inside of the filter core barrel 8 through the L-shaped inlet channel 4, so that the outside of the filter core barrel 8 is flushed, and the flushed water is discharged through the drain pipe 9, the back flushing filter is simple in structure and convenient to operate, not only can the filter be cleaned rapidly, but also the filter element can be prevented from being disassembled and assembled, and the step that people reversely connect the inlet and the outlet during flushing is avoided, so that a large amount of manpower is saved.

When in use: during filtration, can drive filter core bucket 8 and conversion connecting seat 7 through drain 9 upward movement, simultaneously sealing ring four 102 and sealing connection ring 101 sealing connection, conversion connecting seat 7 moves to the through-hole upper end of connecting pipe 6, and L type inlet channel 4 and the outside intercommunication of filter core bucket 8, and L type outlet channel 5 and the inside intercommunication of filter core bucket 8, the filtrate enters into between filter core bucket 8 and the filter lower casing 3 through L type inlet channel 4, can filter the filtrate through filter core bucket 8, the liquid after the filtration is derived through L type outlet channel 5, during the back flush, drive filter core bucket 8 and conversion connecting seat 7 through drain 9 and move down, thereby make conversion connecting seat 7 remove the through-hole lower extreme of connecting pipe 6, and be connected with the sealed toper inclined plane of filter lower casing 3 through sealing ring three 73, consequently, L type outlet channel 5, L type inlet channel 4 and the inside intercommunication of filter core bucket 8, simultaneously sealing ring four 102 and sealing connection ring 101 separation, drain 9 and the outside of filter core bucket 8 are connected, with each other, with L type outlet channel 5 closes the flushing fluid, pass through L type inlet channel 4 and enter into the inside of filter core bucket 8 when flushing, after this flushing water is washed through drain 9 to the outside of filter core bucket 8.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made hereto without departing from the spirit and principles of the present utility model.

Claims (4)

1. A backflushing filter comprising a filter lower housing (3), characterized in that: the utility model discloses a filter, including filter casing (3) under, filter casing (3) under, filter casing (2) are connected with filter head (2) through threaded connection's mode, be equipped with L type inlet channel (4) and L type outlet channel (5) on filter casing (2), be equipped with in the middle of the lower surface of filter casing (2) with connecting pipe (6) of L type outlet channel (5) intercommunication, evenly be equipped with the through-hole in the middle of the side of connecting pipe (6), and the outside of connecting pipe (6) is equipped with gliding conversion connecting seat (7) from top to bottom, the lower surface of conversion connecting seat (7) is connected with filter core bucket (8), and is equipped with conversion sealing member (10) with filter casing (3) under the lower extreme outside of filter core bucket (8), be equipped with reset spring (1) between the lower surface of filter core bucket (8) and the inside bottom surface of filter casing (3), the lower surface center of filter core bucket (8) is fixed with blow off pipe (9), the upper end outside of blow off pipe (9) evenly is equipped with the export, the lower extreme of blow off pipe (9) runs through and extends to the outside of filter casing (3), filter casing (8) is equipped with filter nut (11).

2. A backflushing filter according to claim 1 wherein: the conversion connecting seat (7) comprises a connecting ring (71) which is slidably connected with the connecting pipe (6), the cross section of the connecting ring (71) is of a boss-shaped structure, a sealing ring II (72) is arranged between the inner side of the connecting ring (71) and the connecting pipe (6), the edge of the lower surface of the connecting ring (71) is of a conical structure, a sealing ring III (73) is arranged on the conical surface of the connecting ring (71), and a sealing conical inclined surface corresponding to the sealing ring III (73) is arranged at the upper end of the inner side of the lower shell (3) of the filter.

3. A backflushing filter according to claim 1 wherein: a sealing ring (12) is arranged at the joint of the blow-down pipe (9) and the lower filter shell (3).

4. A backflushing filter according to claim 1 wherein: the conversion sealing piece (10) comprises a sealing connection ring (101) connected with the lower end of the inner part of the filter lower shell (3), the sealing connection ring (101) is integrally connected with the filter lower shell (3), an annular groove is formed in the outer side of the lower end of the filter core barrel (8), a sealing ring IV (102) is arranged in the annular groove, and the sealing ring IV (102) corresponds to the sealing connection ring (101).