CN213623306U

CN213623306U - Full-automatic self-cleaning water filter

Info

Publication number: CN213623306U
Application number: CN202021298193.0U
Authority: CN
Inventors: 罗彤
Original assignee: Zigong Tonghui Energy Equipment Factory
Current assignee: Zigong Tonghui Energy Equipment Factory
Priority date: 2020-07-06
Filing date: 2020-07-06
Publication date: 2021-07-06
Anticipated expiration: 2030-07-06

Abstract

The utility model discloses a full-automatic self-cleaning water filter, which comprises a shell provided with a water inlet and a water outlet, a lower filter element seat, an upper filter element seat, a plurality of filter elements, a speed reducing motor and a transmission shaft; the lower filter element seat is provided with a plurality of annularly arranged liquid inlet holes, each liquid inlet hole is communicated with the lower end of each filter element, the upper end of each filter element is sealed, and the side wall of each filter element is provided with a plurality of conical filtering holes; the lower end of the transmission shaft is fixedly connected with a back-flushing pipe, the upper end of the back-flushing pipe radially corresponds to the liquid inlet hole, the lower ends of the back-flushing pipes are connected with a sewage drainage main pipe through a central sewage drainage pipe, and the sewage drainage main pipe is provided with an electric valve; two sensors of the differential pressure controller are respectively arranged in the shells above and below the lower filter element seat, and the electric valve and the differential pressure controller are both connected with the automatic controller; the utility model has the advantages of continuous filtration, good back-washing and pollution discharge effects, high automation degree, high cleaning efficiency and low operating cost.

Description

Full-automatic self-cleaning water filter

Technical Field

The utility model relates to a water filter, especially a full-automatic self-cleaning water filter.

Background

In the existing filtering device, the service time is long, solid-phase impurities in liquid are trapped on the surface of a filter element, so that the pressure drop is increased, the filtering resistance is increased, and the filtering efficiency is reduced; at this time, the filtering operation needs to be interrupted, the filtering element needs to be replaced or the filtering element needs to be taken out for cleaning, time and labor are wasted, and the efficiency is influenced; some filtering devices are provided with a backwashing structure, but the normal filtering process is also interrupted, so that the normal water supply is influenced, the backwashing effect is poor, and the automation degree is low, so that the cleaning efficiency is low and the operating cost is high.

Disclosure of Invention

The utility model aims at the above-mentioned not enough of prior art, provide a full-automatic self-cleaning water purifier, it still can carry out filtering operation when the back flush blowdown, does not influence normal water supply, has continuous filtration, back flush blowdown effectual, degree of automation is high, the cleaning efficiency is high and the running cost is low advantage.

In order to achieve the above object, the utility model discloses a full-automatic self-cleaning water filter, including the casing that is equipped with water inlet and delivery port, set firmly lower filter core seat and last filter core seat, several filter core in the casing, set firmly gear motor on the casing, with the associative transmission shaft of gear motor, lower filter core seat is vertically located between water inlet and the delivery port, its characterized in that: the lower filter element seat is provided with a plurality of annularly arranged liquid inlet holes, each liquid inlet hole is communicated with the lower end of each filter element, the upper end of each filter element is sealed, the side wall of each filter element is provided with a plurality of conical filter holes, and the sections of the conical filter holes on the radial outer side of the filter elements are larger than the sections of the conical filter holes on the radial inner side of the filter elements; the lower end of the transmission shaft penetrates through the upper filter element seat and the lower filter element seat, the lower end of the transmission shaft is fixedly connected with more than one backwashing pipe, the number of the backwashing pipes is less than that of the filter elements, the upper end of the backwashing pipe radially corresponds to the liquid inlet hole, the lower end of the backwashing pipe is connected with a central sewage discharge pipe, the lower end of the central sewage discharge pipe is arranged in the fixed connecting seat, the lower end of the connecting seat is fixedly connected with a sewage discharge main pipe, and an electric valve is arranged on the sewage discharge main pipe outside the shell; a differential pressure controller is arranged outside the shell, two sensors of the differential pressure controller are respectively arranged in the shell above and below the lower filter element seat, and the electric valve and the differential pressure controller are both connected with the automatic controller;

when in use, the filtrate enters the inner cavity of the filter element through the water inlet and the liquid inlet hole and is discharged from the water outlet after passing through the conical filtering hole; when the impurities are intercepted on the inner surface of the filter element, the filtering resistance is gradually increased to cause the pressure difference of the inner cavity and the outer cavity to rise, when the pressure difference of the inner cavity and the outer cavity exceeds the set value of the differential pressure controller, the differential pressure controller sends out a signal, the automatic controller starts the speed reducing motor and the electric valve to drive the back washing pipe to rotate to the lower part of a certain filter element, the back washing pipe is communicated with the inner cavity of the filter element, the filtered clear liquid reversely enters the filter element under the self pressure, the impurities in the clear liquid are automatically discharged through the sewage drainage main pipe, and other filter elements are normally filtered; the backwashing pipe rotates a certain angle again, the next filter element is subjected to backwashing and regeneration once, and the circulation is carried out, so that the filter elements are prevented from being frequently replaced, normal water supply is not influenced, and the backwashing pipe has the advantages of continuous filtration, high automation degree, high cleaning efficiency and low operating cost;

as a further improvement of the utility model, the upper end outer circle of each back flushing pipe is provided with an upper bushing and a fixed lower bushing in a sliding manner, the upper bushing and the lower bushing are respectively provided with opposite steps, a compression spring ring is arranged between the two steps, and the upper bushing is made of flexible material; the upper bushing can ensure the sealing performance, and the abrasion is automatically compensated, so that the smooth realization of backwashing is ensured;

as a further improvement of the utility model, the bottom of the shell is provided with a water discharge pipe and a valve; the medium in the shell can be discharged when the machine is stopped;

as a further improvement of the utility model, the speed reducing motor is fixedly arranged on the shell through a supporting seat, and the differential pressure controller is connected on a transmission shaft in the supporting seat; the differential pressure controller can be protected;

as a further improvement of the utility model, the connecting seat is fixedly arranged with the inner wall of the shell through the connecting plate, and a sealing ring is arranged outside the central sewage pipe above the connecting seat through a pressing plate; the impurities of the back flush can be prevented from entering the shell;

to sum up, the utility model discloses when the back flush blowdown, still can carry out filtering operation, do not influence normal water supply, have continuous filtration, back flush blowdown effectual, degree of automation is high, the cleaning efficiency is high and the advantage that the working costs is low.

Drawings

Fig. 1 is a structural diagram of an embodiment of the present invention.

Fig. 2 is an enlarged view of fig. 1 at a.

Fig. 3 is an enlarged view of fig. 1 at B.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1 to 3, the fully automatic self-cleaning water filter of this embodiment includes a housing 1 having a water inlet 2 and a water outlet 3, a lower filter element seat 4 and an upper filter element seat 5 fixed in the housing 1, a plurality of filter elements 6, a support seat 7 and a speed reduction motor 8 fixed on the housing, and a transmission shaft 9 connected with the speed reduction motor 8, wherein the lower filter element seat 4 is longitudinally located between the water inlet 2 and the water outlet 3, the transmission shaft 9 in the support seat 7 is connected with a differential pressure controller 10, two sensors 27, 28 of the differential pressure controller 10 are respectively arranged in the water inlet 2 and the water outlet 3 above and below the lower filter element seat 4, and the bottom of the housing 1 is provided with a water discharge pipe 11 and a valve 12; the lower filter element seat 4 is provided with thirty annularly arranged liquid inlet holes 13, each liquid inlet hole 13 is communicated with the lower end of each filter element 6, the upper end of each filter element 6 is sealed, the side wall of each filter element is provided with a plurality of conical filter holes 14, and the cross section of each conical filter hole 14 at the radial outer side of each filter element is larger than that at the radial inner side of each filter element; the lower end of a transmission shaft 9 penetrates through an upper filter element seat 5 and a lower filter element seat 4, the lower end of the transmission shaft 9 is fixedly connected with two backwashing pipes 15 in a welding mode, the upper ends of the backwashing pipes 15 radially correspond to a liquid inlet hole 13, an upper bushing 16 and a fixed lower bushing 17 are arranged on the outer circle of the upper end of each backwashing pipe 15 in a sliding mode, the upper bushing 16 and the lower bushing 17 are respectively provided with opposite steps, a compression spring ring 18 is arranged between the two steps, and the upper bushing 16 is made of flexible materials such as rubber; the lower end of the backwashing pipe 15 is connected with a central sewage discharge pipe 19 in a welding way, the inner wall of the shell 1 is fixedly provided with a connecting seat 21 through a welded connecting plate 20, the lower end of the central sewage discharge pipe 19 is arranged in the connecting seat 21, a sealing ring 23 is arranged outside the central sewage discharge pipe 19 above the connecting seat 21 through a pressing plate 22, the lower end of the connecting seat 21 is fixedly connected with a sewage discharge main pipe 24, and the sewage discharge main pipe 24 outside the shell 1 is provided with an electric valve 26; the electric valve 26 and the differential pressure controller 10 are connected with an automatic controller (not shown); the automatic controller can adopt an industrial personal computer, a PLC or other automatic control systems;

when in use, filtrate enters the inner cavity of each filter element 6 through the water inlet 2 and the liquid inlet hole 13 and is discharged from the water outlet 3 after passing through the conical filter hole 14; when impurities are intercepted on the inner surface of the filter element 6, the filtering resistance is gradually increased, the pressure difference of the inner cavity and the outer cavity is increased and exceeds the set value of the differential pressure controller 10, the differential pressure controller 10 sends a signal, the automatic controller starts the speed reducing motor 8 and the electric valve 26, the two back flushing pipes 15 are driven by the transmission shaft 9 to rotate to the lower part of a certain filter element, the filtrate in the shell 1 is separated by the upper lining 16, the back flushing pipes 15 are communicated with the inner cavity of the filter element, the pressure of the inner cavity of the filter element disappears, the filtered clear liquid reversely enters the filter element under the self pressure, the impurities on the inner wall of the filter element are flushed and automatically discharged through the central sewage discharge pipe 19 and the sewage discharge header pipe 24, and other filter; the back-flushing pipe 15 rotates a certain angle again, the next filter element is back-flushed and regenerated once, and the circulation is carried out, so that all the filter elements can be cleaned, the filter elements are prevented from being frequently replaced, the normal filtrate water supply is not influenced, the advantages of continuous filtration, high automation degree, high cleaning efficiency and low operation cost are achieved, the horn mouth of the conical filter hole 14 forms jet flow during back flushing, and the back-flushing pollution discharge effect is good; the upper bushing 16 can ensure the sealing performance under the action of the compression spring ring 18, and can automatically compensate after being worn, so that the smooth realization of backwashing is ensured; when the machine is stopped, the water discharge pipe 11 and the valve 12 can discharge the medium in the shell;

the sealing ring 23 can prevent back-flushing impurities from entering the shell; the conical filtering holes 14 are uniformly arranged at equal intervals according to the requirement of filtering precision, and can generally reach 10 mu m or even higher; during back flushing, only one or two filter elements are cleaned at the same time, and the filter elements account for dozens to twenty fractions of the number of the whole filter elements, so that the water consumption for sewage discharge is less than 5% of the designed flow.

Claims

1. Full-automatic self-cleaning water filter, including the casing that is equipped with water inlet and delivery port, set firmly lower filter core seat and last filter core seat in the casing, several filter core, set firmly gear motor on the casing, with the associative transmission shaft of gear motor, lower filter core seat is vertically located between water inlet and the delivery port, its characterized in that: the lower filter element seat is provided with a plurality of annularly arranged liquid inlet holes, each liquid inlet hole is communicated with the lower end of each filter element, the upper end of each filter element is sealed, the side wall of each filter element is provided with a plurality of conical filter holes, and the sections of the conical filter holes on the radial outer side of the filter elements are larger than the sections of the conical filter holes on the radial inner side of the filter elements; the lower end of the transmission shaft penetrates through the upper filter element seat and the lower filter element seat, the lower end of the transmission shaft is fixedly connected with more than one backwashing pipe, the number of the backwashing pipes is less than that of the filter elements, the upper end of the backwashing pipe radially corresponds to the liquid inlet hole, the lower end of the backwashing pipe is connected with a central sewage discharge pipe, the lower end of the central sewage discharge pipe is arranged in the fixed connecting seat, the lower end of the connecting seat is fixedly connected with a sewage discharge main pipe, and an electric valve is arranged on the sewage discharge main pipe outside the shell; the shell is externally provided with a differential pressure controller, two sensors of the differential pressure controller are respectively arranged in the shell above and below the lower filter element seat, and the electric valve and the differential pressure controller are both connected with the automatic controller.

2. The fully automatic self-cleaning water filter of claim 1, wherein: the outer circle of the upper end of each backwashing pipe is provided with an upper bushing and a fixed lower bushing in a sliding manner, the upper bushing and the lower bushing are provided with opposite steps, a compression spring ring is arranged between the two steps, and the upper bushing is made of flexible materials.

3. A fully automatic self-cleaning water filter according to claim 1 or 2, wherein: and a water drain pipe and a valve are arranged at the bottom of the shell.

4. A fully automatic self-cleaning water filter according to claim 3, wherein: the speed reducing motor is fixedly arranged on the shell through a supporting seat, and the differential pressure controller is connected to a transmission shaft in the supporting seat.

5. The fully automatic self-cleaning water filter of claim 4, wherein: the connecting seat is fixedly arranged with the inner wall of the shell through a connecting plate, and a sealing ring is arranged outside the central sewage discharge pipe above the connecting seat through a pressing plate.