CN219002176U

CN219002176U - Backwash bag filter

Info

Publication number: CN219002176U
Application number: CN202320156971.XU
Authority: CN
Inventors: 赵伟高; 田一梅; 邵万飞; 刘青; 金超
Original assignee: Tianjin University
Current assignee: Tianjin University
Priority date: 2023-02-08
Filing date: 2023-02-08
Publication date: 2023-05-12
Anticipated expiration: 2033-02-08

Abstract

The utility model relates to the technical field of sewage treatment, in particular to a back flushing bag filter, which comprises a cylinder, wherein an upper sealing cover is fixedly connected to the top of the cylinder, an exhaust part is arranged on the upper sealing cover, a lower sealing cover is fixedly connected to the bottom of the cylinder, a drainage part is arranged at the bottom of the lower sealing cover, a filter assembly is arranged in the cylinder, a flushing water inlet part and a raw water inlet part are communicated with the side wall of the cylinder, the flushing water inlet part is positioned above the raw water inlet part, and a water outlet part is communicated with the top of the side wall of the cylinder; the filter assembly comprises a filter bag, and the filter bag is fixedly connected with the inner wall of the cylinder. The utility model can achieve the aim of cleaning the filter bag without disassembling the filter bag.

Description

Backwash bag filter

Technical Field

The utility model relates to the technical field of sewage treatment, in particular to a back flushing bag filter.

Background

The bag filter is multipurpose filtering equipment with novel structure, small volume, simple and flexible operation, energy saving, high efficiency, closed operation and strong applicability. The inside of the bag filter is supported by a metal basket, liquid flows in from a raw water inlet, flows out from a purified water outlet after being filtered by the filter bag, impurities are intercepted in the filter bag, the gradual accumulation of the impurities in the filter bag can cause the pressure difference between the raw water inlet and the purified water outlet to be continuously increased, and the filter bag is required to be replaced and then used continuously when the pressure difference is born by the super filter bag.

When the pressure difference between the raw water inlet and the purified water outlet reaches a preset value, the traditional bag filter can be continuously used only by replacing the filter bag of the bag filter, so that on one hand, huge consumption of the filter bag is caused, on the other hand, the maintenance cost of the bag filter is increased, the filter bag is replaced according to a certain step and sequence and a certain time is spent, the working efficiency is reduced, and the manpower and material resources are consumed. If the filter bag is not replaced in time due to the fact that the filter bag exceeds the bearing pressure, the risk of bag breakage occurs, the raw water after bag breakage can affect the filtered purified water, and further the normal operation of the back-end process is affected, and therefore a backwashing bag filter is needed to solve the problem.

Disclosure of Invention

The utility model aims to provide a back flushing bag filter so as to solve the problems and achieve the aim of cleaning a filter bag without disassembling the filter bag.

In order to achieve the above object, the present utility model provides the following solutions: the back flushing bag filter comprises a cylinder body, wherein an upper sealing cover is fixedly connected to the top of the cylinder body, an exhaust part is arranged on the upper sealing cover, a lower sealing cover is fixedly connected to the bottom of the cylinder body, a water draining part is arranged at the bottom of the lower sealing cover, a filtering component is arranged in the cylinder body, a flushing water inlet part and a raw water inlet part are communicated with the side wall of the cylinder body, the flushing water inlet part is positioned above the raw water inlet part, and a water outlet part is communicated with the top of the side wall of the cylinder body; the filter assembly comprises a filter bag support, and the filter bag support is fixedly connected with the inner wall of the cylinder.

Preferably, the flushing water inlet comprises a flushing water pipeline, one end of the flushing water pipeline is communicated with the top of the side wall of the cylinder body, the other end of the flushing water pipeline is communicated with a water inlet pipe, a flushing water inlet is formed in the middle of the flushing water pipeline, and a flushing water inlet electric ball valve is arranged at the top of the flushing water inlet.

Preferably, the raw water inlet part comprises a raw water pipeline, one end of the raw water pipeline is communicated with the bottom of the side wall of the cylinder body, the raw water pipeline is positioned below the flushing water pipeline, the other end of the raw water pipeline is communicated with the water inlet pipe, a raw water inlet is formed in the middle of the raw water pipeline, and a raw water inlet electric ball valve is arranged at the top of the raw water inlet.

Preferably, the bottom of the filter bag is fixedly connected with a support, the bottom of the support is fixedly connected with a pressure spring, the axis of the pressure spring is vertically arranged, a filter bag support is fixedly connected below the pressure spring, and the edge of the filter bag support is fixedly connected with the inner wall of the cylinder.

Preferably, the water outlet part comprises a purified water outlet, one end of the purified water outlet is communicated with the top of the side wall of the cylinder, and the top of the purified water outlet is provided with a purified water outlet electric ball valve.

Preferably, the exhaust part includes an exhaust pipe communicating with the upper cover top.

Preferably, the drain portion includes a drain pipe, and the drain pipe is communicated with the bottom of the lower cover.

Preferably, the top of the upper sealing cover is fixedly connected with a hanging ring.

Preferably, the bottom of the lower sealing cover is fixedly connected with a plurality of supporting legs.

The utility model has the following technical effects: the cylinder is used for bearing water, the sealing structure is formed by the upper sealing cover, the cylinder and the lower sealing cover, water leakage is prevented, the exhaust part is used for exhausting air, the air pressure in the cylinder is prevented from being overlarge, the filtering component is used for filtering the water, impurities in the water are removed, the effect of purifying water is achieved, the flushing water inlet part is used for realizing the back flushing effect on the filter bag, the impurities on the surface of the filter bag are flushed out and then are discharged by the water discharging part, the raw water inlet part can be used for introducing the water to be purified into the cylinder, and the water outlet part is used for discharging the purified water.

Drawings

For a clearer description of an embodiment of the utility model or of the solutions of the prior art, the drawings that are needed in the embodiment will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art:

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

FIG. 2 is a top view of the present utility model;

FIG. 3 is a schematic perspective view of the present utility model;

FIG. 4 is a schematic view of the inner support structure of the filter bag of the present utility model;

FIG. 5 is a schematic view of the structure of the filter bag support of the present utility model;

FIG. 6 is a schematic structural diagram of embodiment 2 of the present utility model;

FIG. 7 is an enlarged view of a portion of FIG. 6A in accordance with the present utility model;

wherein, 1, a cylinder; 2. an upper cover; 3. a lower cover; 4. a flushing water inlet; 5. a raw water inlet; 6. a purified water outlet; 7. a water inlet pipe; 8. an exhaust pipe; 9. a hanging ring; 10. a slipknot bolt; 11. a blow-down pipe; 12. support legs; 13. an electric control box; 14. a flushing water inlet electric ball valve; 15. raw water inlet electric ball valve; 16. electric ball valve of purified water outlet; 17. a pressure spring; 18. a filter bag; 19. a filter bag support; 20. the filter bag is internally supported; 21. a first stop collar; 22. an outer ring gear; 23. a second limiting ring; 24. a gear; 25. and a motor.

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.

In order that the above-recited objects, features and advantages of the present utility model will become more readily apparent, a more particular description of the utility model will be rendered by reference to the appended drawings and appended detailed description.

Example 1

Referring to fig. 1-5, the present embodiment provides a backwash bag filter, which comprises a barrel 1, wherein an upper sealing cover 2 is fixedly connected to the top of the barrel 1, an exhaust part is arranged on the upper sealing cover 2, a lower sealing cover 3 is fixedly connected to the bottom of the barrel 1, a water draining part is arranged at the bottom of the lower sealing cover 3, a filter assembly is arranged inside the barrel 1, a rinse water inlet part and a raw water inlet part are communicated with the side wall of the barrel 1, the rinse water inlet part is positioned above the raw water inlet part, and a water outlet part is communicated with the top of the side wall of the barrel 1; the filter component comprises a filter bag support 19, and the filter bag support 19 is fixedly connected with the inner wall of the cylinder body 1. The filter bag inner support 20 plays a role in supporting the filter bag 18, the filter bag inner support 20 is a hollow shell, and a plurality of through holes are formed in the surface of the filter bag inner support.

The cylinder 1 is used for bearing water, the upper sealing cover 2 is fixedly connected with the cylinder 1 through the slipknot bolt 10, the upper sealing cover 2 is conveniently detached, thereby the filter bag 18 is taken out, the sealing structure is formed by the upper sealing cover 2, the cylinder 1 and the lower sealing cover 3, water leakage is prevented, the exhaust part is used for exhausting air, the air pressure in the cylinder 1 is prevented from being overlarge, the filtering component is used for filtering the water, impurities in the water are removed, the effect of purifying water is achieved, the back flushing effect on the filter bag 18 is achieved by the flushing water inlet part, the impurities on the surface of the filter bag 18 are flushed out and then are discharged by the water discharging part, the water to be purified can be introduced into the cylinder 1 by the raw water inlet part, and the water outlet part is used for discharging the purified water.

Further optimizing scheme, the wash water entering part includes the wash water pipeline, wash water pipeline one end and barrel 1 lateral wall top intercommunication, and wash water pipeline other end intercommunication has inlet tube 7, and wash water pipeline middle part is equipped with wash water entry 4, and wash water entry 4 top is equipped with wash water entry electric ball valve 14.

Further optimizing scheme, raw water entering part includes the raw water pipeline, and raw water pipeline one end and barrel 1 lateral wall bottom intercommunication, raw water pipeline are located the wash water pipeline below, and raw water pipeline other end and inlet tube 7 intercommunication are equipped with raw water inlet 5 in the middle part of the raw water pipeline, and raw water inlet 5 top is equipped with raw water inlet electric ball valve 15.

According to a further optimized scheme, a filter bag inner support 20 is fixedly connected to the bottom of a filter bag 18, a pressure spring 17 is fixedly connected to the bottom of the filter bag inner support 20, the axis of the pressure spring 17 is vertically arranged, a filter bag support 19 is fixedly connected to the lower portion of the pressure spring 17, and the edge of the filter bag support 19 is fixedly connected with the inner wall of the cylinder 1. The provision of the filter bag support 19 and the filter bag inner support 20 contributes to the stability of the filter bag 18.

Further optimizing scheme, the water outlet part includes water purification export 6, and water purification export 6 one end and barrel 1 lateral wall top intercommunication are equipped with water purification export electric ball valve 16 at water purification export 6 top.

Further optimizing scheme, the exhaust part comprises an exhaust pipe 8, and the exhaust pipe 8 is communicated with the top of the upper sealing cover 2. The exhaust pipe 8 is used for exhausting air, and prevents the air pressure in the cylinder body 1 from being excessive.

Further optimizing scheme, drain portion includes blow off pipe 11, and blow off pipe 11 communicates with lower closing cap 3 bottom. The drain pipe 11 is used for discharging the washing water with impurities.

In a further optimized scheme, the top of the upper sealing cover 2 is fixedly connected with a hanging ring 9. The hanging ring 9 facilitates the hanging of the whole device.

Further optimizing scheme, the bottom of lower closing cap 3 fixedly connected with a plurality of supporting legs 12. The support legs 12 are used to support the overall device, lifting the device off the ground, facilitating stability improvement.

The working process of the utility model is as follows: the device can be switched into a filtering mode and a back flushing mode, the side wall of the cylinder body 1 is fixedly connected with an electric control box 13, the electric control box 13 is provided with a control system, and the control system can select a PLC (programmable logic controller) and the like. The filtering mode means that water to be purified enters the cylinder 1 from the raw water inlet 5, and after being filtered by the filter bag 18, the water leaves the cylinder 1 from the purified water outlet 6, so that the filtering work is completed. The back flushing mode means that clean water enters the cylinder 1 from the flushing water inlet 4, impurities on the filter bag 18 are flushed from outside to inside, the impurities are flushed and fall to the bottom of the cylinder 1, and the impurities are discharged from the drain pipe 11 along with water flow. The opening and closing of the flushing water inlet 4, the raw water inlet 5, the purified water outlet 6 and the sewage drain pipe 11 are controlled by electric ball valves, and when the device is in a filtering mode, the flushing water inlet 4 is closed, the raw water inlet 5 is opened, the purified water outlet 6 is opened, and the sewage drain pipe 11 is closed; when the device is in a back flush mode, the flushing water inlet 4 is opened, the raw water inlet 5 is closed, the purified water outlet 6 is closed, and the sewage drain pipe 11 is opened. The back flush mode can be automatically started, when the pressure difference between the raw water inlet 5 and the purified water outlet 6 reaches a preset value, the back flush operation can be automatically started, a pressure difference switch (not shown in the figure) is arranged between the raw water inlet 5 and the purified water outlet 6, and the back flush pressure difference value is arranged on the pressure difference switch according to the filtered water quality condition and the actual working condition. When the pressure difference between the raw water inlet 5 and the purified water outlet 6 of the equipment reaches a set value, the pressure difference switch can send an electric signal to the control system, and the linkage electric ball valve is started to perform backwashing operation. The device of the utility model improves the working efficiency, saves financial resources and material resources and is beneficial to production.

Example 2

Referring to fig. 6-7, the difference between this embodiment and embodiment 1 is that the outer wall of the inner support 20 of the filter bag is rotatably connected with the outer gear 22, the top wall of the outer gear 22 is fixedly connected with the filter bag 18, the inner wall of the cylinder 1 is fixedly connected with the first limiting ring 21 and the second limiting ring 23, the opposite side walls of the first limiting ring 21 and the second limiting ring 23 are rotatably connected with the outer gear 22, the top wall of the second limiting ring 23 is fixedly connected with the motor 25, the output shaft of the motor 25 is fixedly connected with the gear 24, and the gear 24 is meshed with the outer gear 22. The filter bag inner support 20 plays a role in supporting the filter bag 18, the filter bag inner support 20 is a hollow shell, a plurality of through holes are formed in the surface of the filter bag inner support 20, when back flushing is carried out, flushing water flows into the filter bag inner support 20 through the through holes after passing through the filter bag 18, and in the flushing process, the cleaning effect of the part, which is not opposite to the through holes, of the filter bag 18 is poor, so that the gear 24 is driven to rotate by the motor 25 of the embodiment, the gear 24 drives the filter bag 18 to rotate on the filter bag inner support 20 through the outer gear ring 22, and the part, which is not opposite to the through holes, of the filter bag 18 is contacted with the filter bag 18 through the rotation effect when the filter bag 18 is static, so that the flushing effect is enhanced.

In the description of the present utility model, it should be understood that the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present utility model, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.

The above embodiments are only illustrative of the preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model, and various modifications and improvements made by those skilled in the art to the technical solutions of the present utility model should fall within the protection scope defined by the claims of the present utility model without departing from the design spirit of the present utility model.

Claims

1. A backwash bag filter, characterized by: the device comprises a barrel body (1), wherein an upper sealing cover (2) is fixedly connected to the top of the barrel body (1), an exhaust part is arranged on the upper sealing cover (2), a lower sealing cover (3) is fixedly connected to the bottom of the barrel body (1), a drainage part is arranged at the bottom of the lower sealing cover (3), a filter assembly is arranged inside the barrel body (1), a flushing water inlet part and a raw water inlet part are communicated with the side wall of the barrel body (1), the flushing water inlet part is positioned above the raw water inlet part, and a water outlet part is communicated with the top of the side wall of the barrel body (1); the filter assembly comprises a filter bag (18), and the filter bag (18) is fixedly connected with the inner wall of the cylinder (1).

2. A backwash bag filter as defined in claim 1 wherein: the flushing water inlet comprises a flushing water pipeline, one end of the flushing water pipeline is communicated with the top of the side wall of the cylinder body (1), the other end of the flushing water pipeline is communicated with a water inlet pipe (7), a flushing water inlet (4) is formed in the middle of the flushing water pipeline, and a flushing water inlet electric ball valve (14) is arranged at the top of the flushing water inlet (4).

3. A backwash bag filter as defined in claim 2 wherein: the raw water inlet part comprises a raw water pipeline, one end of the raw water pipeline is communicated with the bottom of the side wall of the barrel (1), the raw water pipeline is positioned below the flushing water pipeline, the other end of the raw water pipeline is communicated with the water inlet pipe (7), the middle part of the raw water pipeline is provided with a raw water inlet (5), and the top of the raw water inlet (5) is provided with a raw water inlet electric ball valve (15).

4. A backwash bag filter as defined in claim 1 wherein: the filter bag is characterized in that a filter bag inner support (20) is fixedly connected to the bottom of the filter bag (18), a pressure spring (17) is fixedly connected to the bottom of the filter bag inner support (20), the axis of the pressure spring (17) is vertically arranged, a filter bag support (19) is fixedly connected to the lower portion of the pressure spring (17), and the edge of the filter bag support (19) is fixedly connected with the inner wall of the cylinder body (1).

5. A backwash bag filter as defined in claim 1 wherein: the water outlet part comprises a purified water outlet (6), one end of the purified water outlet (6) is communicated with the top of the side wall of the cylinder body (1), and the top of the purified water outlet (6) is provided with a purified water outlet electric ball valve (16).

6. A backwash bag filter as defined in claim 1 wherein: the exhaust part comprises an exhaust pipe (8), and the exhaust pipe (8) is communicated with the top of the upper sealing cover (2).

7. A backwash bag filter as defined in claim 1 wherein: the drainage part comprises a drain pipe (11), and the drain pipe (11) is communicated with the bottom of the lower sealing cover (3).

8. A backwash bag filter as defined in claim 1 wherein: the top of the upper sealing cover (2) is fixedly connected with a hanging ring (9).

9. A backwash bag filter as defined in claim 1 wherein: the bottom of the lower sealing cover (3) is fixedly connected with a plurality of supporting legs (12).