CN216825058U - Backflushing bag type filter - Google Patents

Abstract

The utility model provides a recoil bag filter, including outer barrel, be provided with the supporting network in the outer barrel, the supporting network outside is provided with the filter screen, the filter screen can filter the material, outer barrel lower extreme is connected with a tee bend, two other branches are feed inlet and drain respectively, be provided with the flushing pipe in the supporting network, the upper end of flushing pipe is passed the closing cap and is connected with a tee bend, other two branches are water inlet and air inlet respectively, even distribution has the apopore on the flushing pipe in the supporting network, still be provided with the discharging pipe on the closing cap in addition, the discharging pipe passes through the bleeder valve and is connected with the ejection of compact pipeline, the flushing pipe top-down in the supporting network sets to the heliciform, the flushing bottom of tubes portion sets to planar spiral structure. The utility model discloses an impurity of washing filter screen bottom gathering that the flushing pipe can be better has improved the washing effect to the filter screen bottom greatly, has improved the flushing efficiency, has guaranteed filtration efficiency and product quality, has practiced thrift the water consumption simultaneously greatly.

Description

Backflushing bag type filter

Technical Field

The utility model belongs to the filtration equipment field especially relates to a recoil bag filter.

Background

The Chinese utility model patent ZL201120154569.5 describes an automatic cleaning backflushing bag type filter, which changes the feed inlet of the traditional bag type filtering equipment to be arranged below the equipment, the direction of liquid flowing through the filter is from bottom to top, the liquid is communicated into the filter through a water inlet pipe, and holes are formed on the periphery of the filter to play a role of spraying; can realize the washing of nylon wire, the cleaning process is very simple and convenient, need not unpack the filter apart, but the inlet channel of this filter can only wash the nylon wire of side and can't effectively wash the impurity of nylon wire bottom gathering, in addition this utility model in the discharging pipe also can shelter from the nylon wire of some side for this part nylon wire can't be washed to the inlet tube, the outlet pipe through this filter is expected to be great with the water yield of nylon wire clean-up needs, and the cleaning efficiency is low.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a recoil bag filter to solve the technical problem that the improvement is good, efficient to filter screen washing effect in the filter.

In order to achieve the purpose, the specific technical scheme of the backflushing bag type filter of the utility model is as follows:

a recoil bag filter comprises an outer barrel, a supporting net is arranged in the outer barrel, a filter net is arranged outside the supporting net and can filter materials, the supporting net can provide supporting force for the filter net and prevent the filter net from deforming when filtering the materials and affecting the filtering effect, the upper ends of the outer barrel and the supporting net are respectively provided with an outer barrel flange and a supporting net flange which correspond to each other, the two flanges are arranged up and down, a sealing cover is arranged on the upper surface of the outer barrel and is fixedly connected with the two flanges, the lower end of the outer barrel is connected with a tee joint, the other two branches are respectively a feed inlet and a drain outlet, the feed inlet and the drain outlet are respectively connected with a feed pipeline and a drain pipeline through a feed valve and a drain valve, a flushing pipe is arranged in the supporting net, the upper end of the flushing pipe passes through the sealing cover and is connected with the tee joint, and the other two branches are respectively a water inlet and an air inlet, the water inlet and the air inlet are respectively connected with the water inlet pipeline and the air inlet pipeline through the water inlet valve and the air pressure valve, water outlet holes are uniformly distributed on the flushing pipe in the support network, the flushing pipe can flush the filter screen to flush out filtered sundries on the filter screen, in addition, a discharging pipe is further arranged on the sealing cover and is connected with the discharging pipeline through a discharging valve, the flushing pipe in the support network is arranged into a spiral shape from top to bottom, and the bottom of the flushing pipe is arranged into a plane spiral structure.

Further, be provided with the sealing washer between outer barrel ring flange and the support network ring flange, the same also is provided with the sealing washer between support network ring flange and closing cap, can guarantee the inside leakproofness of outer barrel like this.

Further, the outer cylinder, the supporting net and the flushing pipe are made of stainless steel.

The utility model discloses a recoil bag filter has following advantage: need not to wash the filter screen through the splitter, the cleaning process has been simplified, the production time has been practiced thrift, the work efficiency is improved, set the flushing pipe to the heliciform, the body is close to the filter screen more, it is more high-efficient to wash of filter screen side, the flushing pipe bottom sets to the plane heliciform, make the impurity of washing filter screen bottom gathering that the flushing pipe can be better, the washing effect to the filter screen bottom has been improved greatly, the washing efficiency is improved, the filtration efficiency and the product quality are guaranteed, and simultaneously, the water consumption is greatly saved.

Drawings

Fig. 1 is a schematic structural view of a backflushing bag filter of the present invention;

FIG. 2 is a schematic view of the bottom of the flush pipe of the present invention;

the notation in the figure is: 1. an outer cylinder; 2. a filter screen; 3. a support net; 4, a feeding hole; 41 a feed valve; 5. a sewage draining outlet; 51 a blowdown valve; 6. an air inlet; 61. a pressure relief valve; 7. a water inlet; 71 a water inlet valve; 8. a discharge pipe; 81 discharge valves; 9 flushing the tube.

Detailed Description

In order to better understand the purpose, structure and function of the present invention, a recoil bag filter of the present invention will be described in detail with reference to the accompanying drawings.

As shown in figure 1, the backflushing bag filter of the utility model comprises an outer cylinder body (1), a supporting net (3) is arranged in the outer cylinder body (1), a filter screen (2) is arranged at the outer side of the supporting net (3), the filter screen (2) can filter materials, the supporting net (3) can provide supporting force for the filter screen (2) to prevent the filter screen (2) from deforming when filtering the materials and influencing the filtering effect, corresponding flanges of the outer cylinder body (1) and the supporting net (3) are respectively arranged at the upper ends of the outer cylinder body (1) and the supporting net (3), the two flanges are arranged up and down, a sealing cover is arranged on the outer cylinder body (1), the sealing cover is fixedly connected with the two flanges, a sealing ring is arranged between the flange of the outer cylinder body (1) and the flange of the supporting net (3), and a sealing ring is also arranged between the flange of the supporting net (3) and the sealing cover, the sealing performance of the interior of the outer barrel (1) can be guaranteed, the lower end of the outer barrel (1) is connected with a tee joint, the other two branches are respectively a feed inlet (4) and a drain outlet (5), the feed inlet (4) and the drain outlet (5) are respectively connected with a feed pipeline and a drain pipeline through a feed valve (41) and a drain valve (51), a flushing pipe (9) is arranged in the support net (3), the upper end of the flushing pipe (9) penetrates through a sealing cover to be connected with the tee joint, the other two branches are respectively a water inlet (7) and an air inlet (6), the water inlet (7) and the air inlet (6) are respectively connected with a water inlet pipeline and a gas inlet pipeline through a water inlet valve (71) and an air pressure valve (61), water outlet holes are uniformly distributed on the flushing pipe (9) in the support net (3), the flushing pipe (9) can flush the filter screen (2) to flush impurities filtered on the filter screen (2), besides, a discharge pipe (8) is also arranged on the sealing cover, and the discharge pipe (8) is connected with a discharge pipeline through a discharge valve (81).

The utility model discloses a recoil bag filter's theory of operation does: when materials are filtered, the blow-down valve (51), the water inlet valve (71) and the air pressure valve (61) are closed, the feed valve (41) and the discharge valve (81) are opened, the materials enter the inner part of the outer barrel body (1) through the feed valve (41) and the feed inlet (4), the materials are filtered through the filter screen (2) and then pass through the support screen (3) and enter a discharge pipeline through the discharge pipe (8) and the discharge valve (81), impurities in the materials are blocked outside the filter screen (2) by the filter screen (2), so that the cleanness of the materials is ensured, when the impurities on the filter screen (2) are more, the filtering efficiency is reduced and the product quality is influenced, the filter screen (2) needs to be cleaned, when the materials are cleaned, the feed valve (41) and the discharge valve (81) are closed, the water inlet valve (71), the air pressure valve (61) and the blow-down valve (51) are opened, compressed air and high-pressure water enter a flushing pipe through the water inlet (7) and the air inlet (6), the water outlet hole on the flushing pipe (9) is sprayed to the filter screen (2) and the supporting net (3), so that impurities on the filter screen (2) are flushed, the flushed impurities and water enter a sewage discharge pipeline through the sewage discharge valve (51) to discharge the impurities, and the filter screen (2) can be flushed without disassembling equipment.

The filter screen (2) filters materials, impurities are mainly concentrated on the lower portion of the filter screen (2) and are not easy to wash, so that washing of the bottom of the filter screen is particularly important, if the impurities at the bottom are not washed cleanly, the filtering efficiency can be further influenced, therefore, in order to enable washing of the filter screen (2) to be more efficient and cleaner, the washing pipe (9) is arranged to be spiral from top to bottom, as shown in figure 1, the pipe body of the washing pipe (9) is close to the inner side of the support screen (3), in this way, the washing pipe (9) is closer to the filter screen (2), impact force on the filter screen (2) is larger when the filter screen (2) is washed, the washing is cleaner and the washing efficiency is higher, in addition, in order to wash the bottom of the filter screen (2), the bottom of the washing pipe (9) is arranged to be of a plane spiral structure, as shown in figure 2, namely, a plane spiral structure is formed by inwards rotating around on the plane at the bottom of the washing pipe (9), therefore, the range of the bottom of the filter screen (2) can be completely covered by the flushing pipe (9) at the bottom, high-pressure water sprayed from the water outlet hole on the flushing pipe (9) with the plane spiral structure at the bottom can be directly sprayed to the bottom of the filter screen (2), so that impurities at the bottom of the filter screen (2) can be easily and quickly flushed, the efficiency of flushing the filter screen (2) is greatly improved due to the arrangement of the flushing pipe (9), the flushed filter screen (2) is cleaner, and the water consumption for flushing is also greatly saved,

the outer cylinder (1), the supporting net (3) and the flushing pipe (9) in the embodiment are preferably made of stainless steel, and the stainless steel has stable corrosion resistance, so that the filter can be suitable for filtering various materials.

The utility model discloses a recoil bag filter, need not to wash filter screen (2) through dismantling equipment, the cleaning process has been simplified, the production time has been practiced thrift, the work efficiency is improved, set flushing pipe (9) to the heliciform, the body is close to filter screen (2) more, it is more high-efficient to wash of filter screen (2) side, the plane heliciform is set to flushing pipe (9) bottom, make the impurity of washing filter screen (2) bottom gathering that flushing pipe (9) can be better, the washing effect to filter screen (2) bottom has been improved greatly, the washing efficiency is improved, filter efficiency and product quality are guaranteed, the water consumption has been practiced thrift greatly simultaneously.

It is to be understood that the present invention has been described with reference to certain embodiments, and that various changes or equivalents may be substituted for elements thereof by those skilled in the art without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the present application are intended to be covered by the present invention.

Claims (3)

1. A backflushing bag type filter is characterized by comprising an outer barrel body (1), wherein a supporting net (3) is arranged in the outer barrel body (1), a filter net (2) is arranged on the outer side of the supporting net (3), the filter net (2) can filter materials, the supporting net (3) can provide supporting force for the filter net (2) to prevent the filter net (2) from deforming when filtering the materials and influencing the filtering effect, the upper ends of the outer barrel body (1) and the supporting net (3) are respectively provided with an outer barrel body flange and a supporting net flange which correspond to each other, the two flanges are arranged up and down, a sealing cover is arranged on the outer barrel body (1) and fixedly connected with the two flanges, the lower end of the outer barrel body (1) is connected with a tee joint, the other two branches are a feed inlet (4) and a drain outlet (5), the feed inlet (4) and the drain outlet (5) are respectively connected with a feed pipeline and a drain pipeline through a feed valve (41) and a drain valve (51), the washing pipe (9) is arranged in the support net (3), the upper end of the washing pipe (9) penetrates through the sealing cover to be connected with a tee joint, the other two branches are respectively provided with a water inlet (7) and an air inlet (6), the water inlet (7) and the air inlet (6) are respectively connected with a water inlet pipeline and an air inlet pipeline through a water inlet valve (71) and an air pressure valve (61), water outlet holes are uniformly distributed on the washing pipe (9) in the support net (3), the washing pipe (9) can wash the filter screen (2) to wash away impurities filtered on the filter screen (2), a discharging pipe (8) is further arranged on the sealing cover, the discharging pipe (8) is connected with a discharging pipeline through a discharging valve (81), the washing pipe (9) in the support net (3) is arranged to be spiral from top to bottom, and the bottom of the washing pipe (9) is arranged to be a plane spiral structure.

2. A backflush bag filter according to claim 1, wherein a sealing ring is arranged between the flange of the outer cylinder and the flange of the support network, and a sealing ring is also arranged between the flange of the support network and the cover, so that the sealing inside the outer cylinder (1) can be ensured.

3. A backflushing bag filter according to claim 2 wherein the outer cylinder (1), support screen (3) and flush tube (9) are of stainless steel material.

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