CN215585609U

CN215585609U - Multi-filter-element backwashing filter

Info

Publication number: CN215585609U
Application number: CN202123248779.3U
Authority: CN
Inventors: 张志锐; 张洪兵; 朱晓峰; 李艳波
Original assignee: Xinxiang Tiancheng Aviation Purification Equipment Co ltd
Current assignee: Xinxiang Tiancheng Aviation Purification Equipment Co ltd
Priority date: 2021-12-22
Filing date: 2021-12-22
Publication date: 2022-01-21
Anticipated expiration: 2031-12-22

Abstract

The utility model discloses a multi-filter element backwashing filter, wherein the middle part of a filter element faceplate is provided with a through hole for sealing and installing a rotating shaft, a rolling bearing is arranged in the through hole, the bottom of the rolling bearing is supported and fixed through a bearing support ring, the bearing support ring is welded and fixed at the bottom of the filter element faceplate, a positioning shaft shoulder on the rotating shaft is fixed on the rolling bearing, a rotary sealing seat is sleeved on the rotating shaft, a flange plate at the bottom of the rotary sealing seat is tightly pressed and fixed at the upper part of the filter element faceplate through a bolt assembly, an O-shaped sealing ring for realizing the sealing of the rotary sealing seat and the filter element faceplate is arranged in a groove at the bottom of the flange plate, a sealing assembly which is in sliding friction with the rotating shaft is arranged on an annular step at the inner side of the upper part of the rotary sealing seat, and the sealing assembly is tightly pressed and fixed through a gland fixed at the upper part of the rotary sealing seat. The utility model effectively improves the filtering performance of the self-cleaning filter and prolongs the service life of the self-cleaning filter.

Description

Multi-filter-element backwashing filter

Technical Field

The utility model belongs to the technical field of fluid filtering equipment for processing impurities at an ultra-high flow rate, and particularly relates to a multi-filter-element backwashing filter.

Background

At present, the filter on the market is generally used for simply removing a small amount of solid impurities in liquid, when fluid enters a filter cylinder with a certain specification of filter screen, the impurities are blocked, and clean filtrate is discharged from the outlet of the filter, but the filtering effect is not ideal. These products have certain defects, such as single filter screen, small flow and low efficiency; the automatic impurity removing function is not available, and the filtering function of the filter screen cannot be maintained; no back washing function.

The utility model discloses a notice number is CN 203139752U's utility model discloses a back flush self-cleaning filter sieve of many filter cores, it includes the barrel, from last to separating into epicoele, lumen and cavity of resorption by parallel arrangement's of each other first cross slab and second cross slab down in the barrel, the cavity of resorption is provided with the material import, and the lumen is provided with the material export, be provided with the filter core between first cross slab and the second cross slab, filter core one end and first cross slab seal and be connected, the second cross slab corresponds filter core other end position and is provided with the through-hole that switches on filter core and cavity of resorption, be provided with the blow off pipe in the cavity of resorption, the blow off pipe including be responsible for section and bend section, the bend section be provided with can with the connecting pipe of through-hole butt joint, the centre of a circle setting of each filter core place circumference is on being responsible for the center axis of section. The multi-filter-element backwashing self-cleaning filter screen disclosed by the patent has the effects of large filtering flow and high filtering efficiency, and has a backwashing self-cleaning function.

Among the technical scheme of above-mentioned patent drive arrangement through the rotation axis drive blow off pipe that runs through first baffle and second baffle in proper order and rotate for the through-hole butt joint that is used for installing the filter core on connecting pipe on the blow off pipe and the second baffle, in order to carry out the back flush to the filter core that corresponds with this through-hole. In the actual operation process, the rotating shaft needs to be sealed and penetrates through the second partition plate and needs to bear the weight of the lower end connected and rotated drain pipe and the connecting pipe, however, the specific structure of the filter element faceplate assembly is not clearly disclosed in the technical scheme of the patent, the figure shows that the combined structure adopts the conventional sealing ring and bearing combined structure, the combined structure only can play a role in guiding the rotating shaft and has a certain sealing effect, the pressure-resistant effect and the wear-resistant performance of the sealing ring in the conventional sealing ring and bearing combined structure are relatively poor, meanwhile, the sealing performance is not ideal enough, the service life of the sealing ring is relatively short along with the rotation of the rotating shaft, the liquid in the middle cavity and the liquid in the lower cavity are leaked, and the filtering performance and the service life of the self-cleaning filter are influenced.

SUMMERY OF THE UTILITY MODEL

The utility model solves the technical problem of providing the multi-filter-element backwashing filter which is reasonable in structural design and good in using effect.

The utility model adopts the following technical scheme for solving the technical problems, and the multi-filter-element backwashing filter is characterized by comprising an end cover, an upper barrel body and a lower barrel body which are sequentially connected in a sealing manner from top to bottom, wherein a filter element disc chuck is hermetically installed between the upper barrel body and the lower barrel body so as to form a filter cavity in the upper barrel body and a filtrate cavity in the lower barrel body, a plurality of filter element installation holes are distributed on the filter element disc chuck along the circumferential direction, a filter element liquid inlet end is hermetically inserted and installed in the filter element installation holes and communicated with the filtrate cavity, a through hole for hermetically installing a rotating shaft is formed in the middle of the filter element disc chuck, a rolling bearing is arranged in the through hole, the bottom of the rolling bearing is supported and fixed through a bearing support ring, the bearing support ring is welded and fixed on the bottom of the filter element disc chuck, a positioning shaft shoulder on the rotating shaft is fixed on the rotating shaft in a sleeved manner, and a flange plate at the bottom of the rotating seal seat is tightly pressed and fixed on the upper part of the filter element disc chuck through a bolt assembly The filter element structure comprises a flange plate, a rotary sealing seat and a filter element flower disc, wherein an O-shaped sealing ring used for realizing the sealing of the rotary sealing seat and the filter element flower disc is arranged in a groove at the bottom of the flange plate, a sealing assembly which is in sliding friction with a rotating shaft is arranged on an inner side annular step at the upper part of the rotary sealing seat, the sealing assembly is fixedly compressed through a gland fixed on the upper part of the rotary sealing seat, a liquid outlet communicated with a filter cavity is arranged on the side wall of an upper cylinder, and a liquid inlet communicated with the filter cavity is arranged on the side wall of a lower cylinder.

Further inject, the bottom of the rolling bearing compresses tightly the location through the axle sleeve that the cover locates on the rotation axis and the lock nut that the spiro union was on the rotation axis, and the upper portion of the rolling bearing compresses tightly the location through the bearing clamping ring and the rotary seal seat that the cover locates on the rotation axis.

Further inject, seal assembly is including setting gradually support ring, sealing washer and the clamping ring on the inboard annular step in rotary seal seat upper portion, and wherein the clamping ring compresses tightly fixedly through the gland that is fixed in rotary seal seat upper portion, and this sealing washer is Y type sealing washer or V type sealing washer.

Further inject, the filter core cecum is fixed in on the filter core clamp plate, and the middle part of this filter core clamp plate is equipped with the through-hole that runs through the actuating mechanism output shaft, and the filter core clamp plate and the filter core flower disc that relative up-down set up pass through the lead screw and connect fixedly.

Further inject, the upper portion of end cover is equipped with actuating mechanism, this actuating mechanism's output shaft seal runs through the end cover after extend to the filtration intracavity and is connected the transmission with the one end of rotation axis, the rotation axis seal runs through the filter core flower disc after extend to the filtration intracavity and lead to and turn a wall subassembly and be connected the transmission, the blowdown that turns vertical setting in the wall subassembly is responsible for and is fixed in down on the barrel bottom drain through the bearing, the sealed cooperation that compresses tightly of filter core mounting hole on blowdown branch pipe inlet end and the filter core flower disc that is linked together is responsible for with the blowdown to the blowdown for be responsible for the debris discharge that will wash down through blowdown branch pipe and blowdown under the anti-cleaning state, lower barrel bottom drain passes through sewage pipes and is connected with pneumatic ball valve.

Further inject, be equipped with the support ring flange on the inlet end outer wall of blowdown branch pipe, support the blowdown branch pipe upper seal cover on flange dish upper portion and establish and install the tube-shape and receive hydraulic pressure cover, the upper portion of this tube-shape is received the flaring structure that the filter core mounting hole matches on the filter core flower disc, the flaring structure forms the location step on the lateral wall of tube-shape receipts hydraulic pressure cover, be equipped with the pressure spring of suit on the tube-shape receipts hydraulic pressure cover between the support ring flange on this location step and the blowdown branch pipe for realize that the tube-shape receives the flaring end of hydraulic pressure cover and filter core mounting hole bottom crimping sealing fit on the filter core flower disc.

Further inject, be connected with differential pressure transmitter through the transmitter takeover between the inside filtrate chamber of upper barrel body and the inside filtrate chamber of lower barrel body, lower barrel body is fixed in on the holding surface through the landing leg subassembly.

Compared with the prior art, the utility model has the following advantages and beneficial effects: the self-cleaning filter has the effects of large filtering flow and high filtering efficiency, and has a back-washing self-cleaning function, the filter element flower disc assembly adopts a special structural form to realize better pressure-resistant and wear-resistant effects, and meanwhile, the sealing performance of the rotationally matched part of the rotating shaft and the filter element flower disc is effectively improved, the filtering performance of the self-cleaning filter is improved to a certain extent, and the service life of the self-cleaning filter is prolonged.

Drawings

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

FIG. 2 is a schematic view of the internal structure of the present invention;

fig. 3 is a partially enlarged view of a portion a in fig. 2.

In the figure: 1-end cover, 2-upper cylinder, 3-lower cylinder, 4-filter element flower disc, 5-filter element, 6-rotating shaft, 7-rolling bearing, 8-bearing support ring, 9-rotating seal seat, 10-seal component, 11-gland, 12-shaft sleeve, 13-locking nut, 14-bearing compression ring, 15-filter element pressing plate, 16-driving mechanism, 17-main sewage pipe, 18-branch sewage pipe, 19-pneumatic ball valve, 20-support flange, 21-cylindrical hydraulic pressure receiving sleeve, 22-pressure spring, 23-transmitter connecting pipe, 24-differential pressure transmitter and 25-support leg component.

Detailed Description

Describing the technical scheme of the utility model in detail by combining with the attached drawings, as shown in fig. 1-3, the multi-filter element backwashing filter comprises an end cover 1, an upper barrel 2 and a lower barrel 3 which are sequentially connected in a sealing way from top to bottom, wherein a filter element flower disc 4 is hermetically installed between the upper barrel 2 and the lower barrel 3 to form a filter cavity in the upper barrel 2 and a filtrate cavity in the lower barrel 3, a plurality of filter element installation holes are distributed on the filter element flower disc 4 along the circumferential direction, a liquid inlet end of a filter element 5 is hermetically inserted and installed in the filter element installation holes, a liquid inlet end of the filter element 5 is communicated with the filtrate cavity, a through hole for hermetically installing a rotating shaft 6 is arranged in the middle of the filter element flower disc 4, a rolling bearing 7 is arranged in the through hole, the bottom of the rolling bearing 7 is supported and fixed by a bearing support ring 8, the bearing support ring 8 is welded and fixed at the bottom of the filter element flower disc 4, a positioning shaft shoulder on the rotating shaft 6 is fixed on the rolling bearing 7, 9 covers of rotary seal seat locate on the rotation axis 6 and this 9 bottom ring flanges of rotary seal seat compress tightly through bolt assembly and be fixed in 4 upper portions of filter core flower disc, be equipped with in the recess of ring flange bottom and be used for realizing the O type sealing washer that rotary seal seat 9 and filter core flower disc 4 are sealed, be equipped with on the 9 upper portion of rotary seal seat inboard annular step with 6 sliding friction's of rotation axis seal subassembly 10 and this seal subassembly 10 compress tightly fixedly through the gland 11 that is fixed in 9 upper portion of rotary seal seat, be equipped with the liquid outlet that is linked together with the filter chamber on the 2 lateral walls of upper barrel, be equipped with the inlet that is linked together with the filtrating chamber on the 3 lateral walls of lower barrel.

The bottom of the rolling bearing 7 is pressed and positioned through a shaft sleeve 12 sleeved on the rotating shaft 6 and a locking nut 13 screwed on the rotating shaft 6, and the upper part of the rolling bearing 7 is pressed and positioned through a bearing press ring 14 sleeved on the rotating shaft 6 and a rotating sealing seat 9.

The sealing assembly 10 comprises a support ring, a sealing ring and a pressing ring which are sequentially arranged on an annular step on the inner side of the upper part of the rotary sealing seat 9, wherein the pressing ring is pressed and fixed through a pressing cover 11 fixed on the upper part of the rotary sealing seat 9, the sealing ring is a Y-shaped sealing ring or a V-shaped sealing ring, and the Y-shaped sealing ring or the V-shaped sealing ring has better pressure resistance and wear resistance in a sliding friction state with a rotating shaft.

The blind end of the filter element 5 is fixed on a filter element pressing plate 15, a through hole penetrating through an output shaft of a driving mechanism is arranged in the middle of the filter element pressing plate 15, and the filter element pressing plate 15 and the filter element flower disc 4 which are arranged oppositely up and down are connected and fixed through a screw rod.

The upper part of the end cover 1 is provided with a driving mechanism 16, an output shaft of the driving mechanism 16 penetrates through the end cover 1 in a sealing manner, extends into a filter cavity and is connected and driven with one end of a rotating shaft 6, the rotating shaft 6 penetrates through a filter element faceplate 4 in a sealing manner and extends into the filter cavity and is connected and driven with a rotating wall assembly, a main sewage discharge pipe 17 vertically arranged in the rotating wall assembly is fixed on a sewage discharge outlet at the bottom of a lower cylinder 3 through a bearing, a liquid inlet end of a branch sewage discharge pipe 18 communicated with the main sewage discharge pipe 17 is opposite to a filter element mounting hole on the filter element faceplate 4 and is used for discharging sundries cleaned from the filter element 5 through the branch sewage discharge pipe 18 and the main sewage discharge pipe 17 in a back cleaning state, and the sewage discharge outlet at the bottom of the lower cylinder 3 is connected with a pneumatic ball valve 19 through a sewage discharge pipeline.

A support flange disc 20 is arranged on the outer wall of the liquid inlet end of a sewage branch pipe 18, a cylindrical hydraulic receiving sleeve 21 is hermetically sleeved on the sewage branch pipe 18 on the upper portion of the support flange disc 20, a flaring structure matched with a filter element mounting hole in a filter element faceplate 4 is arranged on the upper portion of the cylindrical hydraulic receiving sleeve 21, a positioning step is formed on the outer side wall of the cylindrical hydraulic receiving sleeve 21 by the flaring structure, and a pressure spring 22 sleeved on the cylindrical hydraulic receiving sleeve 21 is arranged between the positioning step and the support flange disc 20 on the sewage branch pipe 18 and used for realizing the pressing, sealing and matching of the flaring end of the cylindrical hydraulic receiving sleeve 21 and the bottom of the filter element mounting hole in the filter element faceplate 4.

A differential pressure transmitter 24 is connected between the internal filter cavity of the upper barrel 2 and the internal filtrate cavity of the lower barrel 3 through a transmitter connecting pipe 23, and the lower barrel 3 is fixed on a supporting surface through a supporting leg assembly 25.

The specific using process of the utility model is as follows: the material enters the filtrate cavity from the liquid inlet, then enters the filter element from the filter element mounting hole on the filter element flower disc, and the material filtered by the filter element enters the filter cavity and is led out from the liquid outlet communicated with the filter cavity; meanwhile, when the cylindrical hydraulic receiving sleeve on the sewage branch pipe is in butt joint with a certain filter element mounting hole on the filter element flower disc, due to the pressure difference between the filter cavity and the sewage branch pipe, materials in the filter cavity are subjected to back washing on the filter element at the butt joint position, so that the materials with impurities on the filter element are discharged from the sewage branch pipe and the sewage main pipe, the driving mechanism drives the sewage main pipe to rotate through the output shaft and the rotating shaft, the sewage branch pipe connected with the driving mechanism is in butt joint with another filter element mounting hole on the filter element flower disc, and the filter element corresponding to the filter element mounting hole is subjected to back washing. Therefore, the utility model has the effects of large filtering flow and high filtering efficiency and has the function of back washing and self cleaning.

While there have been shown and described what are at present considered the fundamental principles of the utility model, its essential features and advantages, the utility model further resides in various changes and modifications which fall within the scope of the utility model as claimed.

Claims

1. A multi-filter element backwashing filter is characterized by comprising an end cover, an upper barrel body and a lower barrel body which are sequentially connected in a sealing mode from top to bottom, wherein a filter element flower disc is arranged between the upper barrel body and the lower barrel body in a sealing mode so as to form a filter cavity in the upper barrel body and a filter liquid cavity in the lower barrel body, a plurality of filter element mounting holes are distributed in the filter element flower disc along the circumferential direction, a filter element liquid inlet end is installed in each filter element mounting hole in a sealing insertion mode and communicated with the filter liquid cavity, a through hole for installing a rotating shaft in a sealing mode is formed in the middle of the filter element flower disc, a rolling bearing is arranged in each through hole, the bottom of each rolling bearing is supported and fixed through a bearing support ring, each bearing support ring is welded and fixed to the bottom of the filter element flower disc, a positioning shaft shoulder on the corresponding rotating shaft is fixed on the corresponding rolling bearing, a rotating seal seat is sleeved on the corresponding rotating shaft, and a flange plate at the bottom of the rotating seal seat is tightly pressed and fixed to the upper portion of the filter element flower disc through a bolt assembly, an O-shaped sealing ring used for sealing the rotary sealing seat and the filter element flower disc is arranged in a groove in the bottom of the flange plate, a sealing assembly which is in sliding friction with a rotating shaft is arranged on an inner side annular step on the upper portion of the rotary sealing seat and is pressed and fixed through a gland fixed on the upper portion of the rotary sealing seat, a liquid outlet communicated with the filter cavity is arranged on the side wall of the upper cylinder, and a liquid inlet communicated with the filter cavity is arranged on the side wall of the lower cylinder.

2. The multiple cartridge backflush filter of claim 1, wherein: the bottom of the rolling bearing is pressed and positioned by a shaft sleeve sleeved on the rotating shaft and a locking nut screwed on the rotating shaft, and the upper part of the rolling bearing is pressed and positioned by a bearing pressing ring sleeved on the rotating shaft and a rotating sealing seat.

3. The multiple cartridge backflush filter of claim 1, wherein: the sealing assembly comprises a support ring, a sealing ring and a pressing ring which are sequentially arranged on an inner side annular step on the upper portion of the rotary sealing seat, wherein the pressing ring is fixedly pressed through a pressing cover fixed on the upper portion of the rotary sealing seat, and the sealing ring is a Y-shaped sealing ring or a V-shaped sealing ring.

4. The multiple cartridge backflush filter of claim 1, wherein: the filter element blind end is fixed on the filter element pressing plate, a through hole penetrating through an output shaft of the driving mechanism is formed in the middle of the filter element pressing plate, and the filter element pressing plate and the filter element disc chuck which are arranged oppositely from top to bottom are connected and fixed through a screw rod.

5. The multiple cartridge backflush filter of claim 1, wherein: the upper portion of end cover is equipped with actuating mechanism, this actuating mechanism's output shaft seal runs through the end cover after extend to the filtration intracavity and is connected the transmission with the one end of rotation axis, the rotation axis seal runs through the filter core flower disc after extend to the filtration intracavity and lead to and change wall subassembly and be connected the transmission, the blowdown of vertical setting is responsible for and is fixed in down on the barrel bottom drain through the bearing in the commentaries on classics wall subassembly, the sealed cooperation that compresses tightly of filter core mounting hole on blowdown branch pipe inlet end and the filter core flower disc that is linked together is responsible for with the blowdown, be used for being responsible for through blowdown branch pipe and blowdown under the anti-cleaning state and discharge the debris that will wash, lower barrel bottom drain passes through sewage pipes and is connected with pneumatic ball valve.

6. The multiple cartridge backflush filter of claim 5, wherein: the filter cartridge is characterized in that a supporting flange plate is arranged on the outer wall of the liquid inlet end of the sewage branch pipe, a tubular hydraulic receiving sleeve is arranged on the sewage branch pipe on the upper portion of the supporting flange plate in a sealing sleeved mode, the upper portion of the tubular hydraulic receiving sleeve is of an expanding structure matched with a filter cartridge mounting hole in a filter cartridge faceplate, a positioning step is formed on the outer side wall of the tubular hydraulic receiving sleeve by the expanding structure, a pressure spring sleeved on the tubular hydraulic receiving sleeve is arranged between the positioning step and the supporting flange plate on the sewage branch pipe, and the expanding end of the tubular hydraulic receiving sleeve is in press-tight sealing fit with the bottom of the filter cartridge mounting hole in the filter cartridge faceplate.

7. The multiple cartridge backflush filter of claim 1, wherein: the filter device is characterized in that a differential pressure transmitter is connected between the upper barrel internal filter cavity and the lower barrel internal filtrate cavity through a transmitter connecting pipe, and the lower barrel is fixed on a supporting surface through a supporting leg assembly.