CN212998673U

CN212998673U - Stainless steel tube type multi-layer folding sintering filter screen precise filtering device capable of backwashing

Info

Publication number: CN212998673U
Application number: CN202021399689.7U
Authority: CN
Inventors: 权泉
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-07-16
Filing date: 2020-07-16
Publication date: 2021-04-20
Anticipated expiration: 2030-07-16

Abstract

The utility model discloses a stainless steel tube type multi-layer folding sintering filter screen precise filtering device capable of backwashing, which comprises an upper cover, a cylinder body, a liquid inlet, a liquid outlet, a filter element assembly and a clapboard; the upper cover is arranged at the top of the cylinder, the liquid inlet is arranged on the cylinder, the liquid outlet is arranged on the upper cover, and the partition plate is arranged between the upper cover and the cylinder; the upper cover is connected with the cylinder through a flange, the partition plate is provided with an opening matched with the filter element assembly, and the filter element assembly is connected with the partition plate through the opening; the filter layer in the filter element component is arranged in the side wall of the filter element component in a reciprocating bending and folding manner; the top position of this device upper cover is provided with the back flush valve, when carrying out the back flush operation, can pour into high-pressure washing liquid or high-pressure gas through the back flush valve under the condition that inlet and liquid outlet are closed, washes away the impurity on the filter element group spare from the top down and breaks away from the filter element group spare surface, then discharges through the blowoff valve and separates, accomplishes the back flush operation.

Description

Stainless steel tube type multi-layer folding sintering filter screen precise filtering device capable of backwashing

Technical Field

The utility model relates to a but stainless steel tubular multilayer folding sintering filter screen secondary filter device of back flush for organic liquid filtration fields such as making wine, beverage, food, pharmaceutical industry.

Background

In the high-precision filtration of food, beverage, pharmacy, petroleum, chemical industry, environmental protection and other industries, the high-precision filtration has the advantages of high filtration precision, long service life, convenient maintenance, high and low temperature resistance, corrosion resistance, acid and alkali resistance, safe and pollution-free material, no chemical reaction when in long-term contact with liquid, and no secondary pollution.

In the prior art, high-precision filtration in the industries of food, beverage, pharmacy, petroleum, chemical industry, environmental protection and the like is generally a liquid full-filtration system consisting of a container, a filter bag and a support basket; its advantage is that filtration throughput is big, efficient height, and the shortcoming: the filter bag is easy to wear, the cleaning and the replacement are frequent, the labor cost is high, and the secondary pollution is easy to cause. In addition, in the prior art, a filter element made of polypropylene (or similar materials) and natural cotton cloth or diatomite are usually adopted for filtration;

the prior bag filter has the following defects:

1. the filter bag is easy to be worn, the filter bag of the existing bag filter is made of non-woven fabrics or polypropylene materials, the existing bag filter cannot be used for a long time, and the existing bag filter is easy to be worn, frequent to replace and low in pressure resistance.

2. Because the filter bag is made of non-woven fabrics or polypropylene materials, the filter bag is easy to generate chemical reaction with organic liquid and broken fibers flow into the filter body in the using process, thereby causing secondary pollution.

3. The back washing can not be carried out, the cleaning is carried out manually, the cleaning efficiency can not be ensured, and the automation degree is low.

4. The filter element made of polypropylene (similar material) has the problem of intolerance in the filtering process of organic solution, and is easy to release by chemical reaction, thus being not good for health;

5. the diatomite filter has high general manufacturing cost and high manual strength, easily causes the falling of a precoating layer and has unstable filtering quality.

Aiming at the defects, a high-precision filtering filter element which is easy to process and manufacture and low in cost and is used for the industries of wine making and food and beverage needs to be designed, and the filtering device has the advantages of high pressure-bearing filtering precision, high flux, long service life, convenience in maintenance, corrosion resistance, acid and alkali resistance, safety and no pollution of materials, and can not generate chemical reaction when being in long-term contact with liquid.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a utility model aim at: aiming at the problems, the stainless steel tube type multi-layer folding sintering filter screen precise filtering device capable of backwashing is provided, and the problems of low automation degree, low filtering flux, easy material loss, easy side leakage, frequent replacement, inconvenient and incomplete cleaning, high labor cost, incapability of backwashing, dependence on manual cleaning and the like of filtering materials are solved.

The utility model discloses a realize through following scheme:

the stainless steel tube type multi-layer folding sintering filter screen precise filtering device capable of backwashing comprises an upper cover, a cylinder body, a liquid inlet, a liquid outlet, a filter element assembly and a partition plate; the upper cover is arranged at the top of the cylinder, the liquid inlet is arranged on the cylinder, the liquid outlet is arranged on the upper cover, and the partition plate is arranged between the upper cover and the cylinder; the upper cover is connected with the cylinder through a flange, the partition plate is provided with an opening matched with the filter element assembly, and the filter element assembly is connected with the partition plate through the opening; the filter layer in the filter element component is arranged in the side wall of the filter element component in a reciprocating bending and folding mode.

Preferably, the connection parts between the upper cover and the cylinder body are provided with connection plates; the connecting plate comprises a connecting outer plate, a connecting inner plate, a sealing groove and an O-shaped silica gel sealing ring; the O-shaped silica gel sealing ring is arranged in a sealing groove, the sealing grooves on the upper cover and the cylinder body are matched, and the sealing groove is arranged on the inner connecting plate; the thickness of the connecting inner plate is lower than that of the connecting outer plate; the connecting outer plates are fixedly connected through bolts; the O-shaped silica gel sealing ring is convexly connected with the contact surface of the inner plate and the partition plate.

Preferably, the filter element assembly comprises an end head, an outer wall, an inner wall, a filter layer and an end tail, wherein the end head is arranged on the opening end, and the end tail is arranged on the end part of the long cylinder far away from the end head; the end is the ring shape structure, and inner wall and outer wall setting are between end and end tail, form the cavity structure between inner wall and the outer wall, the filter layer is established in the cavity structure, the filter layer sets up in the cavity structure along the reciprocating bending folding of the diameter direction of outer wall, be provided with threaded connection head on the end.

Preferably, the filter layer comprises a main filter screen, a support screen and a protection screen, the main filter screen is arranged between the support screen and the protection screen, and the main filter screen and the protection screen are sintering screens.

Preferably, the inner wall is of a mesh structure, and the outer wall is of a grid protection net.

Preferably, a back flush valve is arranged at the top of the upper cover, and a drain valve is arranged at the bottom of the cylinder body.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

1. the top of the upper cover of the device is provided with a back flush valve, when back flush operation is carried out, under the condition that the liquid inlet and the liquid outlet are closed, high-pressure cleaning liquid or high-pressure gas can be filled through the back flush valve, impurities on the filter element assembly are flushed from top to bottom and separated from the surface of the filter element assembly, and then the impurities are discharged through the drain valve, so that the back flush operation is completed; the filter element of the filter can be cleaned by adopting modes of reverse flow back washing, ultrasonic wave, dissolution, baking and the like.

2. The filtering layer in the filtering component in the device is arranged in the cavity structure in a reciprocating bending and folding manner along the diameter direction of the outer wall, so that the surface area of the filtering layer is far larger than that of the inner wall; the filtering effect is greatly improved, and the pollutant carrying capacity is also improved, so that the integral backwashing frequency can be reduced.

3. The filter element is made of stainless steel, the processing technology is mature, and the material and the structure are high in bearing pressure; the stainless steel material cannot expand with heat and contract with cold after being formed, and cannot deform and expand after being soaked in organic liquid for a long time, so that the precision and the stability of pores are ensured; the stainless steel has smooth surface, and air and liquid can smoothly pass through the stainless steel; therefore, the filter element has the advantages of high porosity, good air permeability, small resistance and low use pressure difference.

4. The device is safe, sanitary, pollution-free and free of side leakage probability, and effectively ensures the filtering quality. The filter element can bear higher working pressure, the pressure loss is small, the operation cost is low, and the energy-saving effect is obvious; the filter precision of the filter element is uniform and stable; the filtration treatment capacity is large, the volume is small, and the dirt capacity is large; basically, the filter does not need to be replaced, so that the labor and the cost are saved, the filter is convenient to clean, and the labor and the time are saved; the device has wide application range, is suitable for precise filtration of fluid and gas, and has flexible use and various installation modes; the device has the advantages of good strength, good rigidity, extremely high mechanical strength and compressive strength, good processing, welding and assembling performance, convenient use and wide application environment temperature.

5. The filter element main body is made of stainless steel, is high temperature resistant and corrosion resistant, and is suitable for filtering wine;

6. the filter element main body is made of stainless steel, has good regeneration performance and can be repeatedly used after chemical cleaning, high-temperature cleaning and ultrasonic cleaning;

7. the filter element main body is made of stainless steel, and chemical compatibility is wide.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic structural view of the connecting portion of the upper cover and the barrel of the present invention;

fig. 3 is a schematic structural view of the O-shaped silica gel sealing ring of the present invention;

FIG. 4 is a schematic structural view of the separator of the present invention;

FIG. 5 is a schematic view of the connection structure of the filter element assembly and the partition plate according to the present invention;

FIG. 6 is a schematic structural view of the filter element assembly of the present invention;

description of the drawings: 21. a tip; 22. an outer wall; 23. an inner wall; 24. a filter layer; 25. end-to-end; 26. a threaded connector; 241. a main filter screen; 242. a protection net; 243. a support net; 101. an upper cover; 102. a barrel; 103. a liquid inlet; 105. a liquid outlet; 106. a filter element assembly; 107. a partition plate; 108. connecting an outer plate; 109. Connecting the inner plates; 110. a sealing groove; 111. an O-shaped silica gel sealing ring; 112. a pressure gauge; 113. a blowoff valve; 114. a back flush valve; 115. a support; 116. and (4) bolts.

Detailed Description

All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.

Any feature disclosed in this specification (including any accompanying claims, abstract) may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the designated device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature.

Example 1

As shown in fig. 1 to 6, the stainless steel tube type multi-layer folded sintered filter screen precise filtering device capable of back flushing comprises an upper cover 101, a cylinder 102, a liquid inlet 103, a liquid outlet 105, a filter element assembly 106 and a partition plate 107; the upper cover 101 is arranged at the top of the cylinder 102, the liquid inlet 103 is arranged on the cylinder 102, the liquid outlet 105 is arranged on the upper cover 101, and the partition plate 107 is arranged between the upper cover 101 and the cylinder 102; the upper cover 101 is connected with the cylinder 102 through a flange, an opening matched with the filter element assembly 106 is formed in the partition plate 107, and the filter element assembly 106 is connected with the partition plate 107 through the opening;

based on above-mentioned structure, upper cover 101 and barrel 102 are cut apart into two different cavitys with baffle 107, and the filtrating gets into from inlet 103 of barrel 102, because the filtrating of dashing into is high pressure filtrating usually, under high pressure's effect, liquid enters into the inner chamber of filter element group spare 106 from the outer wall of filter element group spare 106, reentries into upper cover 101 cavity, accomplishes the filtration of filtrating, discharges from liquid outlet 105 on upper portion at last, through bottom feed liquor, the mode that the upper portion goes out the liquid carries out high pressure-bearing and filters.

The liquid inlet pipe and the liquid outlet pipe are respectively provided with a pressure gauge 112, and the safety of the filtering device during liquid inlet and liquid outlet is ensured by the pressure gauge 112; and when the pressure difference appears in the manometer on inlet and the liquid outlet, represent filter element group spare promptly and appear the jam of certain degree, when the pressure difference exceeded predetermined safe value, can carry out the back flush operation.

Only a bracket 115 is arranged around the cylinder body 102, the whole structure is supported by the bracket 115, a drain valve 113 is arranged at the bottom of the cylinder body 102, and filter residues generated during backwashing are discharged through the drain valve 113.

The top of the upper cover 101 is provided with a back flush valve 114, when back flush operation is performed, under the condition that the liquid inlet 103 and the liquid outlet 105 are closed, high-pressure cleaning liquid or high-pressure gas is filled through the back flush valve 114, impurities on the filter element assembly 106 are flushed from top to bottom and separated from the surface of the filter element assembly 106, and then the impurities are discharged through the drain valve 113, so that the back flush operation is completed.

Can realize through this device to the quick, high-efficient, safe cleaning operation of filter element subassembly 106, reduce the inconvenience that brings when the manpower washs, problem with high costs, at the bottom of the efficiency has improved holistic filtration efficiency, has reduced the filter time.

The connection part between the upper cover 101 and the cylinder 102 is provided with a connection plate; the connecting plate comprises an outer connecting plate 108, an inner connecting plate 109, a sealing groove 110 and an O-shaped silica gel sealing ring 111; the O-shaped silica gel sealing ring 111 is arranged in a sealing groove 110, the sealing grooves 110 on the upper cover 101 and the cylinder 102 are arranged in a matching manner, and the sealing groove 110 is arranged on the inner connecting plate 109; the thickness of the connection inner plate 109 is lower than that of the connection outer plate 108; the connecting outer plate 108 is fixedly connected through bolts 116; the O-shaped silica gel seal ring 111 is protrudingly connected with the contact surface of the inner plate 109 and the partition plate 107.

When the connection is carried out, a cavity is formed between the adjacent inner connection plates 109, the partition plate 107 is arranged in the cavity, when the outer connection bolt 116 is locked, the inner connection plates 109 firmly clamp the partition plate 107, and the O-shaped silica gel sealing rings 111 at the upper end and the lower end are mutually extruded to force the connection part to be sealed, so that the integral air tightness is ensured.

Filter element group spare 106 and baffle 107 are connected through the nut, all be provided with O shape silica gel sealing washer 111 on the upper and lower tip that filter element group spare 106 and baffle 107 are connected, when fixed, through screwing up the nut, make filter element group spare 106 and baffle 107 fixed, O shape silica gel sealing washer 111 is compressed at the in-process of fastening simultaneously, forms and forces sealedly, has guaranteed the airtight of its junction.

The filter element assembly comprises an end 21, an outer wall 22, an inner wall 23, a filter layer 24 and an end tail 25, the filter element assembly is integrally of a long cylindrical structure with one open end, the end 21 is arranged on the open end, the end tail 25 is arranged on the end of the long cylindrical tube far away from the end 21 side, and a water baffle is arranged on the long cylindrical tube far away from the end tail 25 side. The water baffle is made of stainless steel and is arranged in the inner position of the filtering inner cylinder 3; the end head 21 is of a circular structure, the inner wall 23 and the outer wall 22 are arranged between the end head 21 and the end tail 25, a cavity structure is formed between the inner wall 23 and the outer wall 22, the filter layer 24 is arranged in the cavity structure, and the filter layer 24 is arranged in the cavity structure in a reciprocating bending and folding mode along the diameter direction of the outer wall 22, so that the surface area of the filter layer 24 is far larger than that of the inner wall 23; the filter layer 24 is welded at the end faces of the two joints in the cavity structure, so that the integrity of the filter layer 24 is ensured, and the condition of filter leakage after being taken off is prevented. The end is provided with a threaded connector 26, and is connected with the partition board through the threaded connector.

The filter layer 24 comprises a main filter screen 241, a support screen 243 and a protection screen 242, the main filter screen 241 is arranged between the support screen 243 and the protection screen 242, the filtering precision of the main filter screen 241 is 1 μm, and the filtering progress of the protection screen 242 is 4-5 μm; the protection screen 242 provides protection for the main screen 241 so that the main screen 241 can withstand extremely high filtering pressure and water hammer type pressure shock. The main filter screen 241 and the protection screen 242 are sintered screens.

In the prior art, a single-layer stainless steel wire mesh is used for filtering, but on one hand, the filtering precision of the single-layer stainless steel can only reach 3 micrometers, and the sintered stainless steel mesh can reach 1 micrometer, so that the filtering effect is enhanced, on the other hand, because the filter bag is the single-layer stainless steel wire mesh, the filter bag is closed in the manufacturing process, the non-woven fabric edge-covering rear-line machine adopted in the outer edge is closed and locked, the pressure bearing is low, the side leakage is easy to cause, and the filtering precision cannot be ensured after long-term use. And this application adopts 3 layers of welding to close up, can effectively stop the condition emergence of side leakage.

The upper end of main filter screen 241 and protection net 242 carries out the welding through end 21 and seals up, the lower tip of main filter screen 241 and protection net 242 carries out the welding binding off through end tail 25, and tip all carries out welded fastening with end 21 and end tail 25 about filter layer 24, makes filter layer 24 become a complete filtering surface, has stopped the not tight condition that appears the side leakage in binding off limit. In the scheme, the main filter screen 241 and the protection screens 242 at the two ends of the main filter screen form a 3-layer sealing strip edge sealing structure with the end head 21 and the end tail 25 respectively, so that the edge sealing effect is enhanced.

The inner wall 23 is a mesh structure, the outer wall is a grid protection net, and the wall thickness of the inner wall 23 is 1-4 mm.

In this scheme, owing to adopt the filter screen of stainless steel sintering, not only the pressure resistance of filter screen is higher than traditional non-woven fabrics, the filter bag of polypropylene, and chemical compatibility is also effectual than the sack in addition, can filter the operation in acid and alkaline environment for a long time, and can not cause the pollution to the filtrating, also can not introduce impurity.

In the scheme, the type of the fixed stainless steel used by the filtering inner cylinder 3 is 304, which can meet the general filtering environment, and if higher standards are needed, the stainless steel of the type of the bronze drum 316 of the filtering inner cylinder 3 can be sintered, so that the stainless steel can reach the medical grade. Different settings are carried out according to different use environments.

During the backwashing operation, the washing liquid is gradually washed out from the inside of the filter element assembly 3, and the impurities are washed out from the main filter layer 241, the support net 243 and the protection net 242 in sequence, separated from the outer wall 22, dropped into the cylinder and discharged.

The materials used in the scheme are as follows: the cylinder cover, the cylinder body and the clapboard are made of stainless steel 304 or 316. The filter element is formed by processing and combining a stainless steel 304 or 316 porous stainless steel pipe and a multi-layer sintered stainless steel net, has good corrosion resistance, and can be stably used in the environments of nitric acid, sulfuric acid, acetic acid, oxalic acid, phosphoric acid, 5% hydrochloric acid, molten sodium, liquid hydrogen, liquid nitrogen, hydrogen sulfide, acetylene, water vapor, hydrogen, carbon dioxide gas and the like. Can be normally used in the temperature environment of-200 ℃ to 600 ℃. The sealant is silica gel.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. But stainless steel tubular multilayer of back flush folds sintering filter screen secondary filter equipment, its characterized in that: comprises an upper cover, a cylinder body, a liquid inlet, a liquid outlet, a filter element assembly and a clapboard; the upper cover is arranged at the top of the cylinder, the liquid inlet is arranged on the cylinder, the liquid outlet is arranged on the upper cover, and the partition plate is arranged between the upper cover and the cylinder; the upper cover is connected with the cylinder through a flange, the partition plate is provided with an opening matched with the filter element assembly, and the filter element assembly is connected with the partition plate through the opening; the filter layer in the filter element component is arranged in the side wall of the filter element component in a reciprocating bending and folding mode.

2. The backflushable stainless steel tubular multi-layer folded sintered filter screen microfiltration device of claim 1, wherein: the connecting parts between the upper cover and the cylinder body are provided with connecting plates; the connecting plate comprises a connecting outer plate, a connecting inner plate, a sealing groove and an O-shaped silica gel sealing ring; the O-shaped silica gel sealing ring is arranged in a sealing groove, the sealing grooves on the upper cover and the cylinder body are matched, and the sealing groove is arranged on the inner connecting plate; the thickness of the connecting inner plate is lower than that of the connecting outer plate; the connecting outer plates are fixedly connected through bolts; the O-shaped silica gel sealing ring is convexly connected with the contact surface of the inner plate and the partition plate.

3. The stainless steel tubular multi-layer folded sintered filter screen microfiltration device of claim 1 or 2 capable of backwashing, wherein: the filter element assembly comprises an end head, an outer wall, an inner wall, a filter layer and an end tail, wherein the end head is arranged on the opening end, and the end tail is arranged on the end part of the long cylinder far away from the end head; the end is the ring shape structure, and inner wall and outer wall setting are between end and end tail, form the cavity structure between inner wall and the outer wall, the filter layer is established in the cavity structure, the filter layer sets up in the cavity structure along the reciprocating bending folding of the diameter direction of outer wall, be provided with threaded connection head on the end.

4. The stainless steel tubular multi-layer folded sintered filter screen microfiltration device of claim 1 or 2 capable of backwashing, wherein: the filter layer includes main filter screen, supporting network and guard net, main filter screen sets up between supporting network and guard net, main filter screen and guard net are sintering net.

5. The backflushable stainless steel tubular multi-layer folded sintered filter screen microfiltration device of claim 3, wherein: the inner wall is of a mesh structure, and the outer wall is a grid protection net.

6. The backflushable stainless steel tubular multi-layer folded sintered filter screen microfiltration device of claim 1, wherein: the top of the upper cover is provided with a back flush valve, and the bottom of the cylinder body is provided with a drain valve.