CN223464510U - Small-bore high accuracy filter screen structure - Google Patents

Abstract

The utility model discloses a small-caliber high-precision filter screen structure, which belongs to the technical field of water filters and comprises a barrel, wherein a top cover is fixed on the top bolt of the barrel, an annular baffle is fixedly connected to the inner wall of the barrel, a chassis is fixedly connected to the top of the annular baffle, a plurality of unit filter screens distributed in an annular equidistant manner are arranged on the top thread of the chassis, a main sewage draining pipe is rotatably connected to the center position of the inner wall of the barrel bottom through a bearing, and a branch sewage pipe is fixedly and communicated with the periphery of the main sewage pipe.

Description

Small-bore high accuracy filter screen structure

Technical Field

The utility model relates to the technical field of water filters, in particular to a small-caliber high-precision filter screen structure.

Background

The water filter is one kind of water filtering device and is used widely in water pipeline in power station, chemical industry, printing and dyeing industry, papermaking industry, etc. In the process of lubricating water for the pump shaft, the lubricating water for the pump shaft has the characteristics of small water quantity and high precision, and the filtering precision is generally in the range of 0.02-0.5 mm, so that the lubricating water for the pump shaft needs to be used for a small-caliber high-precision water filter.

However, most of the existing small-caliber high-precision water filters are of a structure of a single filter screen and a brush scraper, the defects of small flow of the filter screen and difficult cleaning exist, once the water outlet is blocked, the stable operation of the rear-side water using equipment cannot be ensured, and the use effect is poor.

Disclosure of utility model

1. Technical problem to be solved

Aiming at the problems existing in the prior art, the utility model aims to provide a small-caliber high-precision filter screen structure, which can adopt a corrugated leaf type filter screen structure, increases the area of the filter screen, ensures the overflow capacity of a water filter, adds an inner square hole net to strengthen the inside of the filter screen, adds an outer square hole net to strengthen the outside of the filter screen, ensures the strength requirement of the filter screen, and simultaneously adopts a structure with a single-side inlet, so that the filter screen has an automatic back flushing function, and solves the problem of difficult cleaning of the traditional water filter.

2. Technical proposal

In order to solve the problems, the utility model adopts the following technical scheme.

The utility model provides a small-bore high accuracy filter screen structure, includes the barrel, the top bolt fastening of barrel has the top cap, the inner wall fixedly connected with annular baffle of barrel, the top fixedly connected with chassis of annular baffle, the top screw thread on chassis installs a plurality of and is the unit filter screen that annular equidistance distributes, barrel end inner wall central point puts and rotates through the bearing and be connected with the blowdown and be responsible for, the periphery that the blowdown was responsible for is fixed and communicates and has the blowdown branch pipe, blowdown branch pipe entry is located annular baffle inboard, and is connected with the bottom contact of chassis, gear motor is installed at the top of top cap, gear motor's output extends to the inside of barrel and is responsible for the top transmission connection through shaft coupling and blowdown.

Further, a water outlet and a water inlet are arranged on the periphery of the cylinder body, the water outlet and the water inlet are distributed in an upper-lower parallel mode, and the annular baffle is located between the water outlet and the water inlet.

Further, a sewage discharge external connection pipe is arranged at the center of the bottom of the cylinder body, and the top end of the sewage discharge external connection pipe is fixed and communicated with the bottom end of the sewage discharge main pipe.

Further, the unit filter screen comprises a water inlet connector and a sealing cover, an outer square hole net and an inner square hole net are fixedly connected between the water inlet connector and the sealing cover, the inner square hole net is positioned on the inner side of the outer square hole net, and a filter screen is arranged between the inner side of the outer square hole net and the periphery of the inner square hole net.

Further, a threaded hole is formed in the top of the chassis corresponding to the water inlet interface, and the periphery of the corresponding water inlet interface is in threaded connection with the inner side of the threaded hole.

Further, the threaded holes formed in the chassis correspond to the inlets of the pollution discharge branch pipes.

Furthermore, the top of the sealing cover is of an outer hexagonal structure, and the filter screen is of a wave-leaf structure and is made of stainless steel wires.

3. Advantageous effects

Compared with the prior art, the utility model has the advantages that:

(1) According to the scheme, the wave leaf type filter screen structure is adopted, so that the area of the filter screen is increased, the overcurrent capacity of the water filter is guaranteed, the inner square hole net is added in the filter screen for reinforcement, the outer square hole net is added outside for reinforcement, the strength requirement of the filter screen is guaranteed, and the overall structure greatly improves the water filtering efficiency of the water filter.

(2) According to the scheme, the unit filter screen adopts the structure of the single-side inlet, so that the unit filter screen has an automatic back flushing function, water after partial filtration reversely flows into the filter screen under the action of pressure difference, impurities attached to the filter screen are taken away, impurities inside the filter screen are carried, the filter screen enters a sewage drainage pipeline to be discharged, along with the circumferential rotation of a main sewage pipe, the sewage drainage branch pipes are enabled to perform back flushing on the unit filter screen one by one, the filter screen is ensured to be cleaned, and the filter screen is enabled to be cleaned more conveniently and rapidly.

Drawings

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

FIG. 2 is a schematic view of a unit screen structure according to the present utility model;

FIG. 3 is a schematic cross-sectional view of a unit screen according to the present utility model;

FIG. 4 is a schematic diagram of the filtering operation of the filter screen of the present utility model;

fig. 5 is a schematic diagram of the backflushing operation of the filter screen of the present utility model.

The reference numerals in the figures illustrate:

1. A cylinder;

2. a top cover;

3. An annular baffle;

4. A chassis;

5. Unit filter screen 501, water inlet interface 502, sealing cover 503, external square hole net 504, internal square hole net 505, filter screen;

6. a sewage disposal main pipe;

7. A blow-down branch pipe;

8. A speed reducing motor;

9. A water outlet;

10. A water inlet;

11. And (5) discharging the sewage and taking over.

Detailed Description

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

Examples:

Referring to fig. 1-5, a small-caliber high-precision filter screen structure comprises a barrel 1, a top cover 2 is fixed on the top of the barrel 1 through bolts, an annular baffle 3 is fixedly connected to the inner wall of the barrel 1, a chassis 4 is fixedly connected to the top of the annular baffle 3, a plurality of unit filter screens 5 distributed in annular equidistance are arranged on the top of the chassis 4 through threads, a main sewage pipe 6 is rotatably connected to the center position of the inner wall of the bottom of the barrel 1 through a bearing, a main sewage pipe 7 is fixed on and communicated with the periphery of the main sewage pipe 6, an inlet of the main sewage pipe 7 is positioned on the inner side of the annular baffle 3 and is in contact connection with the bottom of the chassis 4, a speed reducing motor 8 is arranged on the top of the top cover 2, and an output end of the speed reducing motor 8 extends to the inside of the barrel 1 and is in transmission connection with the top end of the main sewage pipe 6 through a coupling.

Referring to fig. 1, a water outlet 9 and a water inlet 10 are arranged on the periphery of a cylinder body 1, the water outlet 9 and the water inlet 10 are distributed in parallel up and down, and an annular baffle 3 is arranged between the water outlet 9 and the water inlet 10.

Referring to fig. 1, a blowdown extension tube 11 is installed at the bottom center of the cylinder 1, and the top end of the blowdown extension tube 11 is fixed and communicated with the bottom end of the blowdown main tube 6.

Referring to fig. 2 and 3, the unit filter screen 5 includes a water inlet port 501 and a sealing cover 502, an external hole network 503 and an internal hole network 504 are fixedly connected between the water inlet port 501 and the sealing cover 502, the internal hole network 504 is located at the inner side of the external hole network 503, a filter screen 505 is arranged between the inner side of the external hole network 503 and the outer periphery of the internal hole network 504, the filter screen 505 is mainly made of metal woven wire mesh, the metal woven wire mesh is woven by stainless steel mesh with different diameters, and has the characteristics of high porosity, high dirt holding capacity, good strength, difficult falling, easy cleaning, high temperature resistance and the like, in addition, the strength of the filter screen 505 is enhanced by the external hole network 503 and the internal hole network 504, and the strength requirement of the filter screen 505 under two working conditions of filtration and backflushing is ensured.

Referring to fig. 1 and 2, a threaded hole is formed in the top of the chassis 4 corresponding to the position of the water inlet port 501, and the periphery of the corresponding water inlet port 501 is in threaded connection with the inner side of the threaded hole.

Referring to fig. 1, a threaded hole formed in the chassis 4 corresponds to an inlet of the drain branch pipe 7.

Referring to fig. 2, the top of the sealing cover 502 is in an outer hexagonal structure, which can assist in screwing the water inlet interface 501 onto the chassis 4, and the filter screen 505 is in a corrugated structure and made of stainless steel wires, and has the characteristics of large filtering area and difficult blockage.

Working principle:

When raw water containing impurities enters the unit filter screen 5, impurities larger than gaps of the woven mesh are intercepted in the filter screen 505, filtered water enters a clear water cavity in the cylinder 1 after passing through the inner square hole net 504, the filter screen 505 and the outer square hole net 503, and is sent out from the water outlet 9, so that water consumption requirements of water consumption equipment at the rear side are met;

During the sewage discharging working condition, the pressure difference between the water inlet 10 and the water outlet 9 is increased along with accumulation of sundries, when the pressure difference reaches a set value, the filter screen 505 is required to be recoiled, part of filtered water reversely flows into the filter screen 505, takes away the sundries attached to the filter screen 505, carries the sundries in the filter screen 505, enters the sewage discharging branch pipe 7, is discharged out of the cylinder body 1 along the main sewage discharging pipe 6 and the external sewage discharging pipe 11, and the unit filter screens 5 are recoiled one by one along with the circumferential rotation of the main sewage discharging pipe 6, so that the cleaning of the filter screen 505 is ensured.

It should finally be noted that in the description of the present utility model, it should be noted that the azimuth or positional relationship indicated by the terms "vertical", "upper", "lower", "horizontal", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element to be referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected through an intermediary, or in communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

The above description is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto. Any person skilled in the art, within the technical scope of the present disclosure, may apply to the present utility model, and the technical solution and the improvement thereof are all covered by the protection scope of the present utility model.

Claims (7)

1. The utility model provides a small-bore high accuracy filter screen structure, includes barrel (1), the top bolt fastening of barrel (1) has top cap (2), its characterized in that, the inner wall fixedly connected with annular baffle (3) of barrel (1), the top fixedly connected with chassis (4) of annular baffle (3), the top screw thread of chassis (4) installs a plurality of unit filter screen (5) that are annular equidistance and distribute, the barrel (1) is gone up the inner wall central point and is connected with blowdown and is responsible for (6) through the bearing rotation, the periphery of blowdown is responsible for (6) is fixed and is linked together and have blowdown branch pipe (7), blowdown branch pipe (7) entry is located annular baffle (3) inboard, and is connected with the bottom contact of chassis (4), gear motor (8) are installed at the top of top cap (2), the output of gear motor (8) extends to the inside of barrel (1) and is responsible for the top transmission of (6) through the shaft coupling.

2. The small-caliber high-precision filter screen structure according to claim 1, wherein a water outlet (9) and a water inlet (10) are arranged on the periphery of the cylinder body (1), the water outlet (9) and the water inlet (10) are distributed in an upper-lower parallel mode, and the annular baffle plate (3) is located between the water outlet and the water inlet.

3. The small-caliber high-precision filter screen structure according to claim 1, wherein a sewage draining external connection pipe (11) is arranged at the bottom center position of the cylinder body (1), and the top end of the sewage draining external connection pipe (11) is fixed and communicated with the bottom end of the sewage draining main pipe (6).

4. The small-caliber high-precision filter screen structure according to claim 1, wherein the unit filter screen (5) comprises a water inlet connector (501) and a sealing cover (502), an outer square hole net (503) and an inner square hole net (504) are fixedly connected between the water inlet connector (501) and the sealing cover (502), the inner square hole net (504) is positioned at the inner side of the outer square hole net (503), and a filter screen (505) is arranged between the inner side of the outer square hole net (503) and the periphery of the inner square hole net (504).

5. The small-caliber high-precision filter screen structure of claim 4, wherein the top of the chassis (4) is provided with a threaded hole corresponding to the water inlet interface (501), and the periphery of the corresponding water inlet interface (501) is in threaded connection with the inner side of the threaded hole.

6. The small-caliber high-precision filter screen structure according to claim 1, wherein the threaded holes formed in the chassis (4) correspond to the inlets of the pollution discharge branch pipes (7).

7. The small-caliber high-precision filter screen structure of claim 4, wherein the top of the sealing cover (502) is of an outer hexagonal structure, and the filter screen (505) is of a wave-leaf structure and is made of stainless steel wires.