CN210521945U

CN210521945U - Retractable back flush filter

Info

Publication number: CN210521945U
Application number: CN201921480334.8U
Authority: CN
Inventors: 刘培科
Original assignee: Xinxiang Meilin Technology Co ltd
Current assignee: Xinxiang Meilin Technology Co ltd
Priority date: 2019-05-22
Filing date: 2019-09-06
Publication date: 2020-05-15
Anticipated expiration: 2029-09-06

Abstract

The utility model discloses a retractable back flush filter, which comprises a shell, a clapboard is arranged in the shell, the clapboard divides the shell into an upper chamber and a lower chamber which are mutually independent, a discharge hole and a flushing water inlet are arranged on the shell corresponding to the upper chamber, a feed inlet is arranged on the shell corresponding to the lower chamber, a drain outlet is arranged on the bottom of the shell, a valve core is arranged at the middle position in the shell, the valve core comprises a central tube, an upper end cover, a lower end cover and a winding filter layer, a first through hole is arranged on the clapboard, the central tube is movably arranged in the through hole in a penetrating way, the two ends of the central tube are sealed and respectively extend to the upper chamber and the lower chamber, an upper water outlet hole and a lower water outlet hole are respectively arranged on the outer side wall of the central tube, the upper end cover is arranged at the position corresponding to the through hole on the clapboard, the lower end cover, the internal structure is simplified, and the filter has the advantages of good filtering effect and thorough back flushing.

Description

Retractable back flush filter

Technical Field

The utility model relates to a filtration equipment field especially relates to a back flush filter.

Background

Along with the progress of society and the development of science and technology, various backwash filters are more and more widely applied in industrial and agricultural production, and the backwash filters with various structures are precision equipment which directly intercepts impurities in water by using a filter screen, removes suspended matters and particles in the water body, reduces turbidity, purifies water, reduces the generation of system dirt, bacteria, algae, rust and the like, and further purifies the water and protects other equipment of the system to normally work. Water enters the self-cleaning filter body from the water inlet, and due to the intelligent (PLC and PAC) design, the system can automatically identify the impurity deposition degree and automatically discharge sewage by a sewage discharge valve signal. The internal structure of the existing backwashing filter is complex, and meanwhile, the backwashing filter is easy to have the situations of incomplete backwashing and serious foreign matter residue in the backwashing process.

Disclosure of Invention

The utility model aims to overcome the defects in the prior art, provide a retractable back flush filter, simplify the internal structure, and have the advantages of good filtering effect and thorough back flush.

In order to realize the above purpose, the utility model discloses a technical scheme is: the utility model provides a retractable back flush filter, includes the casing, be provided with the baffle in the casing, the baffle falls into mutually independent last cavity, lower chamber with the casing, it is provided with discharge gate and sparge water import to correspond last cavity position on the casing, it is provided with the feed inlet to correspond lower cavity position on the casing, casing bottom position is provided with the drain, it all is provided with the valve to correspond discharge gate, sparge water import, feed inlet, drain position on the casing, the intermediate position is provided with the case in the casing, the case includes center tube, upper end cover, lower extreme cover, wound filter bed, it is first to have seted up the perforation hole on the baffle, the center tube activity is worn to adorn in the perforation hole, the sealed extension of center tube both ends is respectively in last cavity, the lower cavity, it has seted up last apopore respectively to correspond upper cavity, lower cavity position on the lateral, The upper end cover is arranged at the upper end face of the partition board and corresponds to a position of the through hole, the lower end cover is arranged at the lower end of the central pipe, the wound filter layer is coaxially sleeved on the central pipe, the upper end of the wound filter layer is connected with the upper end cover, the lower end of the wound filter layer is connected with the lower end cover, and the top of the central pipe is connected with a driving device for driving the central pipe to ascend and descend.

In order to further optimize the utility model discloses, can prefer following technical scheme for use:

preferably, the upper end cover is provided with a second through hole corresponding to the position of the central pipe, a clamping groove is formed in the inner wall of the second through hole, and a sealing ring is embedded in the clamping groove.

Preferably, the upper end of the lower end cover is provided with a fixing groove, the fixing groove is matched with the outer diameter of the central tube, and the lower end cover and the central tube are fixed through bolts.

Preferably, the wrapped filter layer comprises a helical steel band sheet wrapped around a base pipe.

Preferably, the outer side wall of the spiral steel strip plate is provided with a straight line protrusion.

Preferably, the outer side wall of the spiral steel strip plate is provided with a reticulate pattern bulge.

Preferably, a positioning flange is arranged on the central tube and right above the upper end cover, and a spring is coaxially sleeved on the central tube and between the positioning flange and the upper end cover.

Preferably, a plurality of upper water outlet holes and a plurality of lower water outlet holes are uniformly distributed around the shaft, and the aperture of the upper water outlet holes is larger than that of the lower water outlet holes.

Preferably, the driving device adopts an electric push rod or a manual screw rod lifter.

Preferably, a differential pressure gauge for measuring the pressure difference between the upper chamber and the lower chamber is arranged on the shell.

The beneficial effects of the utility model reside in that:

the utility model adopts the winding filter layer matched with the lifting central tube, thereby ensuring the filtering stability of the filter and the back flushing efficiency in the back flushing process; winding type filtering layer is around the heliciform steel band plate of center tube winding simultaneously, it is protruding to have the straight line to suppress or the reticulation is protruding on the steel band, the abrasion resistance that can improve the filtering layer on the one hand improves life, on the other hand can guarantee that the filtering layer combines the compactness to improve filtration efficiency, center tube through adopting the liftable is as medium transition passageway, can guarantee the inside leakproofness of filter, be provided with the spring in the filter core, the power of stretching out and drawing back through spring self drives the center tube motion and can improve the stability of whole equipment operation.

Drawings

FIG. 1 is a schematic view of the internal structure of a backwash filter;

FIG. 2 is a schematic view of the filter cartridge in a filtration state;

FIG. 3 is a schematic view of a filter element in a backwash state;

FIG. 4 is an enlarged view of the structure at A;

FIG. 5 is an enlarged view of the structure at B;

FIG. 6 is a schematic view of a first filter layer structure;

FIG. 7 is a schematic view of a second filter layer structure.

Wherein: 1-shell, 2-connecting flange, 3-supporting leg, 4-upper chamber, 5-lower chamber, 6-washing water inlet, 7-feeding inlet, 8-discharging outlet, 9-sewage outlet, 10-valve, 11-valve core, 12-partition board, 13-upper water outlet, 14-lower water outlet, 15-central tube, 16-winding filter layer, 17-spring, 18-positioning flange, 19-upper end cover, 20-lower end cover, 21-bolt, 22-clamping groove, 23-sealing ring, 24-fixing groove, 25-straight line bulge and 26-reticulate bulge.

Detailed Description

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1

As shown in fig. 1-7, a retractable backwash filter comprises a housing 1, wherein support legs 3 are mounted at the bottom of the housing 1 to ensure the stability of the whole device, a partition plate 12 is mounted in the housing, the housing is divided into an upper chamber 4 and a lower chamber 5 which are independent from each other by the partition plate 12, a connecting flange 2 is mounted on the outer side wall of the housing corresponding to the partition plate, a discharge port 8 and a rinse water inlet 6 are mounted on the housing 1 corresponding to the upper chamber, a feed port 7 is mounted on the housing corresponding to the lower chamber, a drain outlet is mounted at the bottom of the housing, valves 10 are mounted on the housing corresponding to the discharge port 8, the rinse water inlet 6, the feed port 7 and the drain outlet 9, and fluid flows in the discharge port 8, the rinse water inlet, the; a valve core 11 is arranged in the middle of the shell, the valve core comprises a central pipe 15, an upper end cover 19, a lower end cover 20 and a winding type filter layer, a first through hole is formed in the partition plate, the central pipe is movably arranged in the first through hole in a penetrating mode, two ends of the central pipe hermetically extend into the upper cavity 4 and the lower cavity 5 respectively, an upper water outlet hole 13 and a lower water outlet hole 14 are formed in the outer side wall of the central pipe corresponding to the upper cavity and the lower cavity respectively, 3 layers of 12 water outlet holes are uniformly formed in the upper water outlet hole 13 around the shaft, the lower water outlet holes are uniformly formed in the outer side wall of the central pipe, the pore diameter of the upper water outlet hole is larger than that; the upper end cover is arranged at the position, corresponding to the first perforated hole, of the upper end face of the partition plate, the position, corresponding to the central pipe 15, of the upper end cover is provided with a second perforated hole, a clamping groove 22 is formed in the inner wall of the second perforated hole, a sealing ring 23 is embedded in the clamping groove, the sealing performance between the upper cavity and the lower cavity is guaranteed through the sealing ring 23, and the filtering effect is improved.

The lower end cover is arranged at the lower end of the central tube, the winding type filter layer is coaxially sleeved on the central tube, the upper end of the winding type filter layer is connected with the upper end cover, the lower end of the winding type filter layer 16 is connected with the lower end cover, the winding type filter layer 16 comprises a spiral steel band plate wound around the central tube, straight line bulges 25 are arranged on the outer side wall of the spiral steel band plate, on one hand, the abrasion resistance of the filter layer can be improved through the straight line bulges to prolong the service life, on the other hand, the combination tightness of the filter layer can be ensured to improve the filtering efficiency; furthermore, the outer side wall of the spiral steel belt plate can adopt a reticulate pattern bulge 26 to replace a straight line bulge, the reticulate pattern bulge 26 can ensure the tightness of a filter layer in a filtering state to improve the filtering efficiency, a positioning flange 18 is arranged on the central tube right above the upper end cover, a spring 17 is coaxially sleeved on the central tube between the positioning flange 18 and the upper end cover, the central tube is driven to move by the self expansion force of the spring 17 to improve the running stability of the whole equipment and reduce the resilience resistance of the central tube, a fixing groove 24 is arranged at the upper end of the lower end cover, the fixing groove 24 is matched with the outer diameter of the central tube, the lower end cover 20 is fixed with the central tube through a bolt 21 to ensure the connection strength of the lower end cover and the central tube, and meanwhile, the filter layer is convenient to disassemble and maintain, the top of the central tube is connected with a driving device for driving the central, the central pipe is driven to ascend and descend by the driving device to realize the switching between the filtering mode and the backwashing mode. In order to further improve the operation stability of the whole equipment, a differential pressure gauge for measuring the pressure difference in the upper cavity and the lower cavity is arranged on the shell, and the equipment is safely protected by monitoring the pressure difference between the upper cavity and the lower cavity through the differential pressure gauge.

The use process of the device is as follows: when normally filtering, blowoff valve and back flush inlet valve are closed, and under the inside and outside differential pressure of spring and filter core, stainless steel sheet metal wound form filtering layer is in and tight state, satisfies the filtration requirement, and when the differential pressure alarm reached the alarm pressure of settlement, start the recoil flow: the valve of the feeding port is closed, the valve of the sewage draining port is opened, the driving device works to drive the central pipe to move downwards, the filter layers are in a loose state, the backflushing fluid inlet valve is opened and clean liquid or gas is introduced for cleaning, intercepted pollutants between the filter layers are smoothly blown down and discharged through the sewage draining port under the action of backflushing media, after the backflushing is completed, the driving device resets, the filter layers recover to a filtering state, and then the filter enters a normal filtering stage.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. The utility model provides a retractable back flush filter, includes the casing, be provided with the baffle in the casing, the baffle falls into mutually independent last cavity, lower chamber with the casing, it is provided with discharge gate and sparge water import to correspond last cavity position on the casing, it is provided with the feed inlet to correspond lower cavity position on the casing, casing bottom position is provided with the drain, it all is provided with valve, its characterized in that to correspond discharge gate, sparge water import, feed inlet, drain position on the casing: the utility model discloses a valve core, including center tube, upper end cover, lower extreme cover, winding filter layer, the baffle is provided with through-tube hole one in the casing, the center tube activity is worn to adorn in through-tube hole, the center tube both ends are sealed to extend to upper chamber, lower chamber respectively, correspond upper chamber, lower chamber position on the lateral wall of center tube and seted up upper apopore, lower apopore respectively, the upper end cover sets up and corresponds through-tube hole one position in the baffle up end, the lower extreme cover sets up at the center tube lower extreme, the coaxial suit of winding filter layer is on the center tube, winding filter layer upper end is connected with the upper end cover, winding filter layer lower extreme is connected with the lower extreme cover, the center tube top is connected with the drive arrangement who is used for driving the center tube lift.

2. The retractable backwash filter as claimed in claim 1, wherein: the upper end cover is provided with a second perforating hole corresponding to the position of the central pipe, a clamping groove is formed in the inner wall of the second perforating hole, and a sealing ring is embedded in the clamping groove.

3. The retractable backwash filter as claimed in claim 1, wherein: the upper end of the lower end cover is provided with a fixing groove, the fixing groove is matched with the outer diameter of the central tube, and the lower end cover and the central tube are fixed through bolts.

4. The retractable backwash filter as claimed in claim 1, wherein: the wrapped filter layer includes a helical steel band plate wrapped around a central axis.

5. The retractable backwash filter as in claim 4, wherein: the outer side wall of the spiral steel strip plate is provided with a straight grain protrusion.

6. The retractable backwash filter as in claim 4, wherein: and the outer side wall of the spiral steel strip plate is provided with a reticulate pattern bulge.

7. The retractable backwash filter as claimed in claim 1, wherein: the positioning flange is arranged on the central tube and right above the upper end cover, and the spring is coaxially sleeved on the central tube and between the positioning flange and the upper end cover.

8. The retractable backwash filter as claimed in claim 1, wherein: a plurality of upper water outlet holes and lower water outlet holes are uniformly distributed around the shaft, and the aperture of the upper water outlet holes is larger than that of the lower water outlet holes.

9. The retractable backwash filter as claimed in claim 1, wherein: the driving device adopts an electric push rod or a manual screw rod lifter.

10. The retractable backwash filter as claimed in claim 1, wherein: and the shell is provided with a differential pressure gauge for measuring the pressure difference in the upper cavity and the lower cavity.