Small-caliber high-precision filter screen structure

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, a top cover is fixed on the top of the barrel through bolts, an annular baffle is fixedly connected to the inner wall of the barrel, a base plate is fixedly connected to the top of the annular baffle, and the base plate is fixedly connected to the bottom of the barrel. A plurality of unit filter screens which are annularly distributed at equal intervals are installed at the top of the base plate in a threaded mode, a sewage discharge main pipe is rotationally connected to the center position of the inner wall of the bottom of the barrel through a bearing, and sewage discharge branch pipes are fixed and communicated to the periphery of the sewage discharge main pipe. The inner square hole net is additionally arranged inside the filter screen for reinforcement, the outer square hole net is additionally arranged outside the filter screen for reinforcement, the strength requirement of the filter screen is ensured, meanwhile, the filter screen adopts a single-side inlet structure, so that the filter screen has an automatic backwashing function, and the problem that a traditional water filter is difficult to clean is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to filter technology field more specifically, relate to a small caliber high accuracy filter screen structure. BACKGROUND

[0002] The filter is a kind of water filtering device, is widely used in power station, chemical industry, printing and dyeing, papermaking etc. Water supply pipeline of various industries.In the process of lubricating pump shaft with water, since the pump shaft lubricating water has the characteristics of small water quantity, high precision;Filtering accuracy is generally in the range of 0.02~0.5mm, so the pump shaft lubricating water needs to use small caliber high accuracy filter.

[0003] But the existing small caliber high accuracy filter, it is mostly single filter screen plus brush scraper structure, it has the shortcomings of small flow capacity of filter screen, difficult to clean, once blocked, water outlet will occur flow break phenomenon, it cannot guarantee the stable operation of rear water using equipment, use effect is poor, therefore, in view of this, for the existing structure is studied and improved, provide a kind of small caliber high accuracy filter screen structure, to achieve the purpose of more practical value. INVENTION CONTENTS

[0004] 1. Technical problem to be solved

[0005] In view of the problems existing in the prior art, the purpose of the utility model is to provide a kind of small caliber high accuracy filter screen structure, it can adopt wave leaf type filter screen structure, increases filter screen area, guarantees the flow capacity of filter, and adds internal square hole net reinforcement in the inside of filter screen, adds external square hole net reinforcement outside, guarantees the strength requirement of filter screen, simultaneously, filter screen adopts single side inlet structure, it has automatic backwashing function, solves the problem of difficult cleaning of traditional filter.

[0006] 2. Technical scheme

[0007] To solve the above problems, the utility model adopts the following technical scheme.

[0008] A kind of small caliber high accuracy filter screen structure, including cylinder, the top of the cylinder is bolted with top cover, the inner wall of the cylinder is fixedly connected with annular baffle, the top of the annular baffle is fixedly connected with bottom disc, the top of the bottom disc is screw-mounted with several unit filter screens that are annular equidistant distribution, the bottom inner wall center position of the cylinder is rotatably connected with blowdown main pipe by bearing, the outer periphery of the blowdown main pipe is fixed and connected with blowdown branch pipe, the blowdown branch pipe entrance is located annular baffle inner side, and is contacted with the bottom of bottom disc, the top of the top cover is installed with speed reducer motor, the output end of the speed reducer motor extends to the inside of cylinder and is transmissionally connected with the top end of blowdown main pipe by shaft coupling.

[0009] Further, the outer periphery of the cylinder is provided with a water outlet and a water inlet, the water outlet and the water inlet are in parallel distribution, and the annular baffle is located between the water outlet and the water inlet.

[0010] Further, a sewage external pipe is installed at the bottom center of the cylinder, and the top end of the sewage external pipe is fixed and communicated with the bottom end of the sewage main pipe.

[0011] Further, the unit filter screen comprises a water inlet interface and a sealing cover, outer square hole screens and inner square hole screens are fixedly connected between the water inlet interface and the sealing cover, the inner square hole screens are located on the inner side of the outer square hole screens, and filter screens are arranged between the inner side of the outer square hole screens and the outer periphery of the inner square hole screens.

[0012] Further, a threaded hole is formed in the top of the bottom disc and corresponds to the position of the water inlet interface, and the outer periphery of the corresponding water inlet interface is screw-connected with the inner side of the threaded hole.

[0013] Further, the threaded hole formed in the bottom disc corresponds to the inlet of the sewage branch pipe.

[0014] Further, the top of the sealing cover is in an outer hexagonal structure, the filter screen is in a wave-leaf structure, and is made of stainless steel wire material.

[0015] 3. Beneficial effects

[0016] Compared with the prior art, the utility model has the advantages that:

[0017] (1) The wave-leaf type filter screen structure is adopted, the filter screen area is increased, the flow capacity of the water filter is ensured, the inner square hole screens are arranged in the filter screen to reinforce the filter screen, the outer square hole screens are arranged outside the filter screen to reinforce the filter screen, the strength requirement of the filter screen is ensured, and the overall structure greatly improves the water filtering efficiency of the water filter.

[0018] (2) The unit filter screen adopts the structure of single-side inlet, has the automatic backwashing function, under the action of the pressure difference, part of the filtered water flows reversely into the filter screen, carries away the sundries attached to the filter screen, carries the sundries in the filter screen, enters the sewage pipeline and is discharged, the sewage branch pipes backwash the unit filter screens one by one along with the rotation of the circumference of the sewage main pipe, the cleanliness of the filter screen is ensured, and the cleaning of the filter screen is more convenient and fast. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a whole structure schematic view of the utility model;

[0020] Figure 2 It is a unit filter screen structure schematic view of the utility model;

[0021] Figure 3 It is a unit filter screen sectional view of the utility model;

[0022] Figure 4 Filtering net filtering work schematic view of the utility model;

[0023] Figure 5 Filtering net back flushing work schematic view of the utility model.

[0024] Mark explanation in drawing:

[0025] 1, cylinder;

[0026] 2, top cover;

[0027] 3, annular baffle;

[0028] 4, bottom disc;

[0029] 5, unit filter screen; 501, water inlet; 502, sealing cover; 503, outer square hole screen; 504, inner square hole screen; 505, filter screen;

[0030] 6, blowdown main pipe;

[0031] 7, blowdown branch pipe;

[0032] 8, speed reducer motor;

[0033] 9, water outlet;

[0034] 10, water inlet;

[0035] 11, blowdown external connection pipe. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model; Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments; Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0037] Embodiment:

[0038] Please refer to Figure 1-5The utility model provides a small -bore high -precision filter screen structure, including the cylinder 1, the top bolted fixing of cylinder 1 has top cover 2, the inner wall fixed connection of cylinder 1 has annular baffle 3, and the top fixed connection of annular baffle 3 has bottom disc 4, and the top of bottom disc 4 is installed with a plurality of unit filter screen 5 that is annular equidistance distribution, and the bottom inner wall center position of cylinder 1 is rotatably connected with blowdown main pipe 6 through bearing, and the outer periphery of blowdown main pipe 6 is fixed and is communicated with blowdown branch pipe 7, and the inlet of blowdown branch pipe 7 is located annular baffle 3 inner side, and is contacted with the bottom of bottom disc 4, and the top of top cover 2 is installed with speed reducer motor 8, and the output of speed reducer motor 8 extends to the inside of cylinder 1 and is transmission connection with the top end of blowdown main pipe 6 through the shaft coupling.

[0039] Refer to Figure 1 The outer periphery of cylinder 1 is provided with water outlet 9 and water inlet 10, and water outlet 9 and water inlet 10 are in parallel distribution up and down, and annular baffle 3 is located between the two.

[0040] Refer to Figure 1 The bottom center position of cylinder 1 is installed with blowdown external connection pipe 11, and the top end of blowdown external connection pipe 11 is fixed and communicated with the bottom end of blowdown main pipe 6.

[0041] Refer to Figure 2 And Figure 3 Unit filter screen 5 includes water inlet interface 501 and sealing cover 502, and the fixed connection of water inlet interface 501 and sealing cover 502 has outer square hole net 503 and inner square hole net 504, and the inner side of outer square hole net 503 is located in the outer periphery of inner square hole net 504, and the filter screen 505 is arranged between the inner side of outer square hole net 503 and the outer periphery of inner square hole net 504, and the main filter material of filter screen 505 is metal woven wire mesh, which is woven by stainless steel mesh with different diameters and has the characteristics of high porosity, high pollution capacity, good strength, not easy to fall off, easy to clean, high temperature resistance and the like, in addition, the outer square hole net 503 and the inner square hole net 504 increase the strength of the filter screen 505, to ensure the strength requirement of the filter screen 505 under the filtering and backwashing conditions.

[0042] Refer to Figure 1 And Figure 2 The top of bottom disc 4 is provided with a threaded hole corresponding to the position of water inlet interface 501, and the outer periphery of corresponding water inlet interface 501 is screw-connected with the inner side of threaded hole.

[0043] Refer to Figure 1 The threaded hole provided on the bottom disc 4 corresponds to the inlet of blowdown branch pipe 7.

[0044] Refer to Figure 2 The top of sealing cover 502 is hexagonal structure, which can assist the water inlet interface 501 to be screwed on the bottom disc 4, and the filter screen 505 is wave-leaf structure and is made of stainless steel wire material, which has the characteristics of large filtering area and not easy to block.

[0045] Working principle:

[0046] When the raw water containing impurities enters the inside of the unit filter screen 5, the impurities larger than the gap of the woven mesh are intercepted inside the filter screen 505, and the filtered water enters the clean water cavity in the cylinder 1 through the inner square hole mesh 504, the filter screen 505 and the outer square hole mesh 503, and is sent out from the water outlet 9 to meet the water requirement of the water equipment on the rear side;

[0047] When the pressure difference between the water inlet 10 and the water outlet 9 increases due to the accumulation of impurities, the filter screen 505 needs to be backflushed when the pressure difference reaches the set value; part of the filtered water flows reversely into the inside of the filter screen 505, carries away the impurities attached to the filter screen 505, and carries the impurities in the inside of the filter screen 505 into the blowdown branch pipe 7, and is discharged outside the cylinder 1 along the blowdown main pipe 6 and the blowdown external pipe 11, and the filter screen 505 is backflushed one by one along with the circumferential rotation of the blowdown main pipe 6, to ensure the cleanliness of the filter screen 505.

[0048] Finally, it should be noted that in the description of the present application, it should be noted that the terms "vertical", "upper", "lower", "horizontal" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, 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, therefore it cannot be understood as a limitation of the present application.

[0049] In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "set", "install", "connect", "connect" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0050] The above is only a preferred specific embodiment of the present application; however, the protection scope of the present application is not limited to this. Any skilled person in the art can make equivalent replacement or change according to the technical scheme of the present application and the improved concept thereof within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A small-bore high-precision screen structure, comprising a cylinder (1), the top of the cylinder (1) is bolted with a top cover (2), characterized in that: The inner wall of the barrel (1) is fixedly connected with an annular baffle (3), the top of the annular baffle (3) is fixedly connected with a bottom disc (4), the top of the bottom disc (4) is threadedly installed with a plurality of unit filter screens (5) distributed in a ring shape at equal intervals, the bottom inner wall center of the barrel (1) is rotatably connected with a blowdown main pipe (6) through a bearing, the outer periphery of the blowdown main pipe (6) is fixedly connected with a blowdown branch pipe (7) in communication, the blowdown branch pipe (7) inlet is located on the inner side of the annular baffle (3) and is in contact connection with the bottom of the bottom disc (4), the top of the top cover (2) is installed with a speed reducer motor (8), the output end of the speed reducer motor (8) extends to the inside of the barrel (1) and is drivingly connected with the top end of the blowdown main pipe (6) through a shaft coupling.

2. The small-bore high-precision screen structure according to claim 1, characterized in that: The outer periphery of the barrel (1) is provided with a water outlet (9) and a water inlet (10), the water outlet (9) and the water inlet (10) are distributed in parallel from top to bottom, and the annular baffle (3) is located between the two.

3. The small-bore high-precision screen structure according to claim 1, characterized in that: The bottom center of the barrel (1) is installed with a blowdown external connecting pipe (11), the top end of the blowdown external connecting pipe (11) is fixedly connected with the bottom end of the blowdown main pipe (6) in communication.

4. The small-bore high-precision screen structure according to claim 1, characterized in that: The unit filter screen (5) comprises a water inlet interface (501) and a sealing cover (502), the outer square hole net (503) and the inner square hole net (504) are fixedly connected between the water inlet interface (501) and the sealing cover (502), and the inner square hole net (504) is located on the inner side of the outer square hole net (503), the filter screen (505) is arranged between the inner side of the outer square hole net (503) and the outer periphery of the inner square hole net (504).

5. The small-caliber high-precision filter structure according to claim 4, characterized in that: The top of the bottom disc (4) is provided with a threaded hole corresponding to the position of the water inlet interface (501), and the outer periphery of the corresponding water inlet interface (501) is threadedly connected with the inner side of the threaded hole.

6. The small-caliber, high-precision filter structure according to claim 1, characterized in that: The threaded hole opened on the bottom disc (4) corresponds to the inlet of the blowdown branch pipe (7).

7. The small-bore high-precision screen structure according to claim 4, characterized in that: The top of the sealing cover (502) is in an outer hexagonal structure, the filter screen (505) is in a wave-leaf structure and is made of stainless steel wire material.

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