CN220159363U - Corrosion-resistant filter capable of being purged online - Google Patents

Abstract

The utility model provides an online purging corrosion-resistant filter, which comprises a metal cylinder, an inflating head arranged at the top of the metal cylinder, a quick-mounting chuck arranged at the bottom of the metal cylinder, a filter element positioned in the metal cylinder and a co-extrusion soft bag, wherein the filter element is arranged on the bottom of the metal cylinder; the co-extrusion soft bag is coated outside the filter element, and the filter element comprises an upper end cover, a lower end cover, an inner framework and a filter layer coated outside the inner framework. According to the online purging corrosion-resistant filter provided by the utility model, compressed gas is injected into the co-extrusion soft bag through the inflation head, so that all filtrate can be extruded, the utilization rate of the filtrate is improved, waste is avoided, and the cost is reduced; through the isolation of the co-extrusion soft bag, the metal cylinder body can avoid contact with filtrate, cannot be corroded and has long service life; in addition, the inside of the metal cylinder body is replaced integrally, so that the metal cylinder body is convenient to use, the interface is simple, the replacement is quick, filtrate is free from leakage and dripping during replacement, pollution to the production environment is avoided, the residual filtrate is not required to be cleaned, and the safety is high.

Description

Corrosion-resistant filter capable of being purged online

Technical Field

The utility model relates to the technical field of filters, in particular to a corrosion-resistant filter capable of being purged online.

Background

In the filtration fields of lithium battery slurry filtration, magnetic slurry filtration, paint and ink filtration, digital image coating slurry material filtration and the like, the existing filter has the problem that an upstream filter medium is not available in a shell, so that a waste phenomenon is caused, particularly for some high-value slurries, the cost expenditure is seriously increased, for the residual slurries, the slurry leakage can pollute the production environment when the filter is replaced, in addition, in the corrosive medium, the existing filter contains a metal material, and if the existing filter is in direct contact with the corrosive medium, the filter is invalid.

Disclosure of Invention

The utility model aims to disclose an online purging corrosion-resistant filter, wherein compressed gas is injected into a co-extrusion soft bag through an inflation head, so that all filtrate can be extruded, the utilization rate of the filtrate is improved, waste is avoided, and the cost is reduced; through the isolation of the co-extrusion soft bag, the metal cylinder body can avoid contact with filtrate, cannot be corroded and has long service life; in addition, the inside of the metal cylinder body is replaced integrally, so that the metal cylinder body is convenient to use, the interface is simple, the replacement is quick, filtrate is free from leakage and dripping during replacement, pollution to the production environment is avoided, the residual filtrate is not required to be cleaned, and the safety is high.

In order to achieve the aim, the utility model provides an online purging corrosion-resistant filter, which comprises a metal cylinder, an inflating head arranged at the top of the metal cylinder, a quick-mounting chuck arranged at the bottom of the metal cylinder, a filter element positioned in the metal cylinder and a co-extrusion soft bag, wherein the filter element is arranged on the bottom of the metal cylinder; the co-extrusion soft bag is coated outside the filter element, and the filter element comprises an upper end cover, a lower end cover, an inner framework positioned between the upper end cover and the lower end cover, and a filter layer coated outside the inner framework; the device also comprises a bottom end cover connected with the lower end cover, wherein the bottom end cover is provided with a liquid inlet and a liquid outlet, a liquid inlet one-way valve is arranged in the liquid inlet, and a liquid outlet control valve is arranged in the liquid outlet; the quick-mounting chuck is provided with a liquid inlet channel communicated with the liquid inlet and a liquid outlet channel communicated with the liquid outlet.

In some embodiments, the inflation head comprises a one-way valve seat, a threaded straight-through connected with the one-way valve seat, an inflation hose inserted in the threaded straight-through, a valve head and a bottom valve positioned in the one-way valve seat, and a reset spring; one end of the return spring is connected to the bottom valve, the other end of the return spring is connected to the valve head, a guide cylinder is formed on the bottom valve, one end of the valve head slides in the guide cylinder, the other end of the valve head is attached to the closed thread under the action of the return spring to be directly connected, and an air inlet hole is formed in the bottom valve.

In some embodiments, the top of the co-extrusion soft bag is connected with the one-way valve seat, the bottom of the co-extrusion soft bag is connected with the bottom end cover, and the connecting surface of the bottom of the co-extrusion soft bag and the bottom end cover has a draft angle of 5-10 degrees.

In some embodiments, the co-extruded flexible pouch comprises an inner layer and an outer layer, the inner layer is a welded layer of HDPE or PP material, and the outer layer is a nylon reinforcement layer.

In some embodiments, the liquid inlet one-way valve comprises a plastic spring head and a plastic blocking piece, the plastic spring head comprises a main body and a corrugated pipe body connected to the main body, the plastic blocking piece comprises a pressing plate and a rod body, the pressing plate is covered on the liquid inlet, a limiting table connected with a bottom end cover is arranged in the liquid inlet, the top of the plastic spring head is attached to the limiting table, and the rod body penetrates through the limiting table and is connected with the plastic spring head.

In some embodiments, the rod body and the body are threaded.

In some embodiments, the liquid outlet control valve comprises a plastic spring body abutted with the lower end cover, a liquid outlet plug abutted with the plastic spring body, and a thimble abutted with the liquid outlet plug; the plastic spring body is hollow, and the liquid outlet plug is attached to the bottom end cover.

In some embodiments, the plastic spring body is formed by connecting a plurality of corrugated pipe sections, a plurality of openings are formed in the corrugated pipe sections, and the area of each opening is half of the circumferential area of each corrugated pipe section.

In some embodiments, the plastic spring body has a thickness of 1.5-2mm and an included angle between adjacent bellows sections is 45 ° -60 °.

In some embodiments, the ejector pin is located in the liquid outlet channel.

Compared with the prior art, the utility model has the beneficial effects that: according to the online purging corrosion-resistant filter provided by the utility model, compressed gas is injected into the co-extrusion soft bag through the inflation head, so that all filtrate can be extruded, the utilization rate of the filtrate is improved, waste is avoided, and the cost is reduced; through the isolation of the co-extrusion soft bag, the metal cylinder body can avoid contact with filtrate, cannot be corroded and has long service life; in addition, the inside of the metal cylinder body is replaced integrally, so that the metal cylinder body is convenient to use, the interface is simple, the replacement is quick, filtrate is free from leakage and dripping during replacement, pollution to the production environment is avoided, the residual filtrate is not required to be cleaned, and the safety is high.

Drawings

FIG. 1 is an external view of an online cleanable corrosion resistant filter according to the present utility model;

FIG. 2 is a schematic illustration of the internal structure of an on-line cleanable corrosion resistant filter according to the present utility model;

FIG. 3 is an internal block diagram (omitting the metal cylinder and the quick-mount cartridge) of an online purging corrosion-resistant filter according to the present utility model;

fig. 4 is an enlarged view of reference a in fig. 3;

FIG. 5 is a schematic view of the structure of the inflatable head shown in FIG. 3;

FIG. 6 is a schematic view of the plastic spring head shown in FIG. 3;

FIG. 7 is a schematic view of the plastic spring body shown in FIG. 3;

fig. 8 is a schematic view of the bottom end cap shown in fig. 3.

Detailed Description

The present utility model will be described in detail below with reference to the embodiments shown in the drawings, but it should be understood that the embodiments are not limited to the present utility model, and functional, method, or structural equivalents and alternatives according to the embodiments are within the scope of protection of the present utility model by those skilled in the art.

An online purging corrosion-resistant filter as shown in fig. 1-8 comprises a metal cylinder 1 and a quick-mounting chuck 2 arranged at the bottom of the metal cylinder 1. The metal cylinder body 1 and the quick-mounting chuck 2 are connected through a flange.

And also comprises an air charging head 3 arranged on the top of the metal cylinder body 1. The inflation head 3 comprises a one-way valve seat 34, a threaded straight-through 32 connected with the one-way valve seat 34, an inflation hose 31 inserted into the threaded straight-through 32, a valve head 35 and a bottom valve 33 positioned in the one-way valve seat 34, and a return spring 36.

The one-way valve seat 34 and the threaded through 32 are connected through a bottom valve 33, and a guide cylinder 331 and an air inlet hole 330 are formed on the bottom valve 33. The valve head 35 includes a plunger portion 351 and a slider portion 352. The sliding part 352 slides in the guide cylinder 331, the pressure head part 351 is attached to the closed thread straight-through 32 under the action of the return spring 36, so that impurities are prevented from falling into the closed thread straight-through, the filtering effect is ensured, filtrate can be prevented from being discharged from the air charging head 3, and zero pollution is ensured. One end of the return spring 36 is connected to the guide tube 331, and the other end of the return spring 36 is connected to the sliding portion 352.

After the filtering operation is completed, compressed gas is introduced into the air hose 31, the compressed gas passes through the screw through 32 and presses the pressing head portion 351, the return spring 36 is compressed, the sliding portion 352 slides down in the guide cylinder 331, thereby driving the pressing head portion 35 to descend, the pressing head portion 35 is separated from the screw through 32, and the compressed gas enters the bottom valve 33 through a gap between the pressing head portion 35 and the screw through 32 and enters the co-extrusion soft bag 4 through the air inlet hole 330. After the air is filled for about 30 to 40S, the air valve is closed, the compressed air is stopped being introduced, and under the action of the return spring 36, the pressure head 351 is reset to be attached to the closed thread straight-through 32 again.

And also comprises a filter element 5 positioned in the metal cylinder 1. The filter element 5 comprises an upper end cover 53, a lower end cover 54, an inner framework 52 arranged between the upper end cover 53 and the lower end cover 54, and a filter layer 51 coated outside the inner framework 52. The filtrate passes through the filter layer 51 from the outside, is filtered by the filter layer 51, enters the inner framework 52, and is finally discharged from the liquid outlet of the lower end cover 53.

Also included is a co-extruded flexible bag 4 located within the metal cylinder 1. The co-extrusion soft bag 4 is coated outside the filter element 5. The compressed gas entering the co-extrusion soft bag 4 extrudes the filtrate in the filter element 5, so that the filtrate enters the inner framework 52 after being filtered by the filter layer 51, the filtrate is discharged as much as possible, waste is avoided, and the cost is reduced. After the air valve is closed, the metal cylinder body 1 is disassembled, the co-extrusion soft bag 4 is squeezed by hands, the filtrate is emptied again, the internal filtrate completely enters the filter layer 51, and the discharge rate of the filtrate is improved.

The co-extrusion soft bag 4 can prevent the metal cylinder 1 from being in direct contact with filtrate, and prevent the metal cylinder 1 from being corroded to cause failure, so that the co-extrusion soft bag can be reused. The co-extruded flexible pouch 4 comprises an inner layer and an outer layer. The inner layer is a welding layer made of HDPE or PP materials, and is convenient to connect. The outer layer is a nylon reinforcing layer and is firm in structure.

The top of the co-extrusion soft bag 4 is welded with the one-way valve seat 34, the bottom of the co-extrusion soft bag 4 is welded with the bottom end cover 6, the connection fastness is strong, the tightness is good, and pollution caused by leakage of filtrate can be prevented. The connection surface between the bottom of the co-extrusion soft bag 4 and the bottom end cover 6 has a draft angle of 5-10 degrees.

And a bottom end cap 6 coupled to the bottom end cap 54. The bottom end cover 6 is pressed and fixed by the metal cylinder body 1 and the quick-mounting chuck 2.

The bottom end cover 6 is provided with a liquid inlet 61 and a liquid outlet 62, a liquid inlet one-way valve is arranged in the liquid inlet 61, and a liquid outlet control valve is arranged in the liquid outlet 62. The quick-mounting chuck 2 is provided with a liquid inlet channel 21 communicated with a liquid inlet 61 and a liquid outlet channel 22 communicated with a liquid outlet 62. The liquid inlet channel 21 and the liquid outlet channel 22 are independent.

The liquid inlet check valve comprises a plastic spring head 72 and a plastic blocking piece 71. The plastic spring head 72 includes a main body 721 and a bellows-like body 722 coupled to the main body 721. The plastic blanking interval 71 includes a pressing plate 711 and a rod 712.

A limiting table connected with the bottom end cover 6 is arranged in the liquid inlet 61. The limiting table comprises an outer ring 614, an inner ring 611 and four connecting rods 613 connecting the inner ring 611 and the outer ring 614. The stop serves to limit the position of the plastic spring head 72.

The pressure plate 711 is covered on the liquid inlet 61. The top of the corrugated pipe 722 is attached to the limiting table, and the rod body 712 penetrates through the inner ring 611 and is connected with the plastic spring head 72. The rod body 712 is screwed with the main body 721, so that the plastic spring head 72 and the plastic blocking piece 71 are lifted and lowered synchronously.

After the liquid inlet valve is opened, filtrate flows into the liquid inlet 61 from the liquid inlet channel 21, the corrugated pipe body 722 is compressed to drive the plastic spring head 72 to move upwards integrally, the rod body 712 rises in the inner ring 611 due to the integral structure of the plastic spring head 72 and the plastic blocking piece 71, the liquid inlet 61 is opened, and filtrate enters. After the liquid inlet valve is closed, the corrugated pipe body 722 is restored, the plastic spring head 72 is reset, the rod body 712 is driven to descend in the inner ring 611, the pressing plate 711 descends to be continuously covered on the liquid inlet 61, filtrate cannot be discharged from the liquid inlet 61, and during replacement, the filtrate is free from leakage and dripping, and pollution to production environment is avoided.

The bottom end cap 6 is formed with a receiving cylinder 63, the lower end cap 54 is formed with an extension cylinder 541, the extension cylinder 541 is inserted into the receiving cylinder 63, and both are sealed by an O-ring. The liquid outlet of the lower end cover 54 is positioned in the extension cylinder 541, and the liquid outlet 62 is positioned in the accommodating cylinder 63.

The liquid outlet control valve comprises a plastic spring body 82 which is abutted with the lower end cover 54, a liquid outlet plug 81 which is abutted with the plastic spring body 82, and a thimble 23 which is abutted with the liquid outlet plug 81.

The plastic spring body 82 and the liquid outlet plug 81 are both positioned in the extension cylinder 541. The upper end of the plastic spring 82 abuts against the liquid outlet of the lower end cover 54, so that the filtered liquid enters the plastic spring 82. The lower end of the liquid outlet plug 81 plugs the liquid outlet 62. The ejector pin 23 is located in the liquid outlet channel 22.

The ejector pin 23 ejects the liquid outlet plug 81, the plastic spring body 82 is compressed, the liquid outlet 62 is opened, and the filtered liquid flows out of the plastic spring body 82 and then enters the liquid outlet channel 22 through the liquid outlet 62. When the quick-mounting chuck 2 is disassembled, the thimble 23 is separated from the liquid outlet plug 81, the plastic spring body 82 is restored to be in an original state, and the liquid outlet plug 81 is pressed, so that the liquid outlet plug 81 is continuously pressed to block the liquid outlet 62, filtrate cannot be discharged from the liquid outlet 62, and when the quick-mounting chuck is replaced, the filtrate is free from leakage and dripping, and pollution to the production environment is avoided.

The plastic spring body 82 is hollow. The plastic spring body 82 is formed by connecting a plurality of corrugated pipe joints 821, and a plurality of openings 822 are formed in the corrugated pipe joints 821. The area of the opening 822 is half of the circumferential area of the corrugated pipe joint 821, and the area of the opening 822 and the plastic spring 82 reach a balanced state, so that the area of the opening 822 is increased to the greatest extent, filtered liquid enters the plastic spring 82 and can be discharged from the opening 822 as soon as possible, and the liquid outlet plug 81 is not influenced by the plastic spring 82 to be pressed, so that the liquid outlet 62 is closed.

The thickness b of the plastic spring body 82 is 1.5-2mm, and the included angle a between the adjacent corrugated pipe segments 821 is 45-60 degrees, so that the plastic spring body 82 has enough rigidity and rebound performance.

The working principle of the online purging corrosion-resistant filter is as follows: the metal cylinder body 1 and the quick-mounting chuck 2 are assembled, the liquid inlet valve is opened, filtrate flows into the liquid inlet 61 from the liquid inlet channel 21, the liquid inlet one-way valve is opened, the filtrate enters the filter, the filtrate enters the inner framework 52 after being filtered by the filter layer 51, the filtered liquid enters the plastic spring body 82 through the lower end cover 54, flows out of the plastic spring body 82, and finally enters the liquid outlet channel 22 from the liquid outlet 62. After the filtration work is completed, the liquid inlet valve is closed, the liquid inlet 61 is blocked, and the liquid outlet 62 is kept in an open state. The air valve is opened, compressed gas is filled into the filter through the air filling head 3, and the residual filtrate is extruded by the compressed gas. Closing the air valve, detaching the metal cylinder body 1, extruding the co-extrusion soft bag 4 by hand, and further discharging the internal filtrate. Finally, the quick-mounting cartridge 2 is removed and the outlet 62 is closed. The metal cylinder body 1 and the quick-mounting chuck 2 are repeatedly used, and the rest are replaced.

The above list of detailed descriptions is only specific to practical embodiments of the present utility model, and they are not intended to limit the scope of the present utility model, and all equivalent embodiments or modifications that do not depart from the spirit of the present utility model should be included in the scope of the present utility model.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims (10)

1. The online purging corrosion-resistant filter is characterized by comprising a metal cylinder, an inflating head arranged at the top of the metal cylinder, a quick-mounting chuck arranged at the bottom of the metal cylinder, a filter element positioned in the metal cylinder and a co-extrusion soft bag; the co-extrusion soft bag is coated outside the filter element, and the filter element comprises an upper end cover, a lower end cover, an inner framework positioned between the upper end cover and the lower end cover, and a filter layer coated outside the inner framework; the device also comprises a bottom end cover connected with the lower end cover, wherein the bottom end cover is provided with a liquid inlet and a liquid outlet, a liquid inlet one-way valve is arranged in the liquid inlet, and a liquid outlet control valve is arranged in the liquid outlet; the quick-mounting chuck is provided with a liquid inlet channel communicated with the liquid inlet and a liquid outlet channel communicated with the liquid outlet.

2. The online purging corrosion-resistant filter according to claim 1, wherein the inflating head comprises a one-way valve seat, a threaded straight-through part connected with the one-way valve seat, an inflating hose inserted in the threaded straight-through part, a valve head and a bottom valve positioned in the one-way valve seat, and a return spring; one end of the return spring is connected to the bottom valve, the other end of the return spring is connected to the valve head, a guide cylinder is formed on the bottom valve, one end of the valve head slides in the guide cylinder, the other end of the valve head is attached to the closed thread under the action of the return spring to be directly connected, and an air inlet hole is formed in the bottom valve.

3. The online purging corrosion resistant filter of claim 2, wherein the top of the co-extrusion soft bag is connected with the one-way valve seat, the bottom of the co-extrusion soft bag is connected with the bottom end cover, and the connecting surface of the bottom of the co-extrusion soft bag and the bottom end cover has a draft angle of 5-10 degrees.

4. The online purging corrosion resistant filter of claim 3, wherein said co-extruded flexible bag comprises an inner layer and an outer layer, said inner layer is a welded layer of HDPE or PP material, and said outer layer is a nylon reinforcement layer.

5. The online purging corrosion-resistant filter according to claim 1, wherein the liquid inlet one-way valve comprises a plastic spring head and a plastic blocking piece, the plastic spring head comprises a main body and a corrugated pipe body connected to the main body, the plastic blocking piece comprises a pressing plate and a rod body, the pressing plate is covered on the liquid inlet, a limiting table connected with a bottom end cover is arranged in the liquid inlet, the top of the plastic spring head is attached to the limiting table, and the rod body passes through the limiting table and is connected with the plastic spring head.

6. The on-line cleanable corrosion filter of claim 5, wherein said stem and body are threaded.

7. The online purging corrosion-resistant filter of claim 1, wherein the liquid outlet control valve comprises a plastic spring body which is abutted with the lower end cover, a liquid outlet plug which is abutted with the plastic spring body, and a thimble which is abutted with the liquid outlet plug; the plastic spring body is hollow, and the liquid outlet plug is attached to the bottom end cover.

8. The online purging corrosion resistant filter according to claim 7, wherein the plastic spring body is formed by connecting a plurality of corrugated pipe sections, a plurality of openings are formed in the corrugated pipe sections, and the area of the openings is half of the circumferential area of the corrugated pipe sections.

9. The on-line cleanable corrosion resistant filter of claim 8, wherein said plastic spring body has a thickness of 1.5-2mm and an included angle between adjacent bellows sections is 45 ° -60 °.

10. The on-line cleanable corrosion filter of claim 7, wherein said spike is positioned in said fluid passageway.