CN221155642U

CN221155642U - Backwashing electronic grade chemical filter

Info

Publication number: CN221155642U
Application number: CN202323171351.2U
Authority: CN
Inventors: 王金柱; 顾仁平; 延兴鑫
Original assignee: Jiangsu Silian Environmental Protection Equipment Co ltd
Current assignee: Jiangsu Silian Environmental Protection Equipment Co ltd
Priority date: 2023-11-23
Filing date: 2023-11-23
Publication date: 2024-06-18
Anticipated expiration: 2033-11-23

Abstract

The utility model discloses a back flushing electronic grade chemical filter, which comprises a seal head, a filter cylinder, a lower cover, an upper filtering unit and a lower filtering unit, wherein the seal head, the filter cylinder and the lower cover are sequentially connected from top to bottom; the top of the seal head is provided with a back flushing assembly, and the filter cylinder body is provided with a cover opening assembly; the upper filtering unit comprises an upper pore plate and a filter element assembly; the lower filtering unit comprises a lower pore plate and the filter element component which is inversely arranged on the lower pore plate; the two ends of the filter element are respectively provided with the isolation sleeve and the sealing ring, so that the filter short circuit of the filter element is avoided, the filter element has a stable structure, and the filter element cannot be loosened and fallen off during continuous production; the integral structure of the filter is convenient for cleaning; the filter back flushing and the structural design of the pneumatic switch lower cover avoid the work of frequently disassembling and replacing the filter element, shorten the cleaning time and improve the production efficiency; the filter has a simple structure, is a visible area after being integrally disassembled, is convenient for carrying out internal surface anti-corrosion treatment, and is suitable for electronic grade chemical filtering work.

Description

Backwashing electronic grade chemical filter

Technical Field

The utility model relates to the technical field of filters, in particular to a back flushing electronic grade chemical filter.

Background

The filter is used as necessary equipment for separating, clarifying, purifying and other procedures in the production process of electronic grade chemicals, and has enough stability, namely, can stably intercept the solid with preset particle size in the mixed liquid, and avoids the phenomenon that the solid in the mixed liquid is not intercepted as much as possible. In order to achieve the filtering effect after the filter is put into use, the filter cake layer is formed by circulating filtration to intercept solid particles, and the filter in the filtration form is long in production time and low in production efficiency. Because the cost control of manufacturing enterprise, the use of filter also should have certain economic nature, and the purchase cost of filtering the consumptive material and the solid useless processing cost after using abandonment are all higher, and the filter often dismantle change filter core also can lead to wasing the maintenance cost higher, also do not accord with the low cost principle of enterprise's production.

Disclosure of utility model

The utility model aims to solve the technical problem of providing a backwashing electronic grade chemical filter which can realize backwashing of the filter, shorten the cleaning time and improve the production efficiency.

Based on the technical problems in the background technology, the utility model provides a back flushing electronic grade chemical filter, which comprises a seal head, a filter cylinder, a lower cover and an upper filtering unit and a lower filtering unit, wherein the seal head, the filter cylinder and the lower cover are sequentially connected from top to bottom;

The top of the seal head is connected with a back flushing assembly, an air inlet is arranged above the side face of the filter cylinder, a liquid inlet is arranged at the bottom side of the filter cylinder, a bottom filtrate outlet is arranged at the bottom of the lower cover, and the lower cover and the filter cylinder are connected with a cover opening assembly together;

the upper filtering unit comprises an upper pore plate and a filter element assembly which is arranged on the upper pore plate, a waste liquid channel is arranged at the lowest point of the upper plane of the upper pore plate, and a waste liquid port is arranged at the end part of the waste liquid channel;

The lower filtering unit comprises a lower pore plate, an inner counter bore is formed in the lower pore plate, and the filter element assembly is inverted in the inner counter bore.

Preferably, the filter element assembly comprises a filter element, the upper end and the lower end of the filter element are respectively provided with a liquid outlet end isolation sleeve and a tail end isolation sleeve, the liquid outlet end isolation sleeve is sleeved with a nut, and the middle part of the liquid outlet end isolation sleeve is also provided with a liquid outlet channel.

Preferably, a first sealing ring and a second sealing ring are respectively arranged on the contact surface of the liquid outlet end isolation sleeve, the filter element and the nut, and a third sealing ring is arranged on the contact surface of the tail end isolation sleeve, the filter element.

Preferably, the back flush assembly comprises a filtrate pipe connected to the top of the seal head, the other end of the filtrate pipe is connected with a filtrate collecting port, the bottom of the filtrate collecting port is connected with a back flush port, the middle position of the filtrate pipe is also connected with a support rod, and the other end of the support rod is connected to the filter cylinder.

Preferably, the cover opening assembly comprises a reciprocating cylinder arranged on the filter cylinder body, the other end of the reciprocating cylinder is connected to the lower cover, the lower cover is further connected with a movable hinge, and the fixed end of the movable hinge is connected to the lower side of the filter cylinder body.

Preferably, a plurality of studs are fixedly arranged at the joint of the seal head and the filter cylinder body, the upper pore plate is fixed between the seal head and the filter cylinder body by the studs, a caliper screw is arranged at the joint of the lower cover and the filter cylinder body, and the lower pore plate is fixed between the lower cover and the filter cylinder body by the caliper screw.

Compared with the prior art, the backwashing electronic grade chemical filter provided by the utility model adopts the technical scheme, and achieves the following technical effects:

1. The two ends of the filter element are respectively provided with the isolation sleeve and the sealing ring, so that the filter short circuit of the filter element is avoided, the filter element is screwed with the filter element through threads, the filter element has a stable structure, and the filter element cannot be loosened and fall off during continuous production, and is suitable for filtering electronic-grade chemicals;

2. The whole structure of the filter is convenient to clean, the pollution probability of the clear liquid side is small, the operation is stable, the short circuit can not be filtered, the filter can be applied to the final stage of the filtering work, and the quality of electronic grade chemistry is ensured;

3. The filter back flushing and the structural design of the pneumatic switch lower cover avoid the work of frequently disassembling and replacing the filter element, shorten the cleaning time, and greatly improve the production efficiency so as to meet the full-load capacity requirement of the existing electronic grade chemical production enterprises;

4. The filter has simple structure, no welding blind area, visual area after being integrally disassembled, convenient internal surface corrosion prevention treatment and suitability for filtering electronic grade chemicals with strong corrosiveness.

Drawings

FIG. 1 is a schematic cross-sectional view of a filter of the present utility model being cleaned prior to activation;

FIG. 2 is a schematic view of a backwash cross-sectional structure of the present utility model;

FIG. 3 is a schematic view of a portion of the lower filter unit of the present utility model;

FIG. 4 is a schematic diagram showing a press-drying cross-section structure of a rinse solution according to the present utility model;

FIG. 5 is a schematic view of an open-face structure of the present utility model;

FIG. 6 is a schematic diagram of the joint between the seal head and the filter cylinder according to the present utility model;

FIG. 7 is a schematic view of the structure of the connection between the lower cover and the filter cylinder;

FIG. 8 is a schematic perspective view of a filter element of the present utility model;

fig. 9 is a schematic cross-sectional view of a filter cartridge structure of the present utility model.

In the figure: 1. a seal head; 2. a filter cartridge; 3. a lower cover; 4. an air inlet; 5. a liquid inlet; 6. a bottom filtrate outlet; 7. an upper orifice plate; 8. a filter element assembly; 801. a filter element; 802. a liquid outlet end isolation sleeve; 803. a tail end isolation sleeve; 804. a nut; 805. a liquid outlet channel; 806. a first sealing ring; 807. a second sealing ring; 808. a third sealing ring; 9. a waste liquid channel; 10. a waste liquid port; 11. a lower orifice plate; 12. An inner counter bore; 13. a filtrate pipe; 14. a filtrate collecting port; 15. a backwashing port; 16. a support rod; 17. a reciprocating cylinder; 18. a living hinge; 19. a double-ended stud; 20 calliper screw.

Detailed Description

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. 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.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

Referring to fig. 1-9, the utility model provides a back flushing electronic grade chemical filter, which comprises a sealing head 1, a filter cylinder 2, a lower cover 3 and an upper filtering unit and a lower filtering unit which are respectively arranged at the joint of the sealing head 1, the filter cylinder 2 and the lower cover;

Specifically, the top of the seal head 1 is connected with a back flushing assembly, an air inlet 4 is arranged above the side surface of the filter cylinder 2, a liquid inlet 5 is arranged at the bottom side, a bottom filtrate outlet 6 is arranged at the bottom of the lower cover 3, and the lower cover 3 and the filter cylinder 2 are connected with a cover opening assembly together;

specifically, the upper filtering unit comprises an upper pore plate 7 and a filter element assembly 8 which is arranged on the upper pore plate 7, a waste liquid channel 9 is arranged at the lowest point of the upper plane of the upper pore plate 7, and a waste liquid port 10 is arranged at the end part of the waste liquid channel 9;

Specifically, the lower filter unit comprises a lower pore plate 11, an inner counter bore 12 is arranged on the lower pore plate 11, and a filter element assembly 8 is arranged in the inner counter bore 12 in a flip-chip manner.

In this embodiment, the upper orifice plate 7, the lower orifice plate 11 just formed two sets of filter units from top to bottom after installing filter element assembly 8, when the filter normally used, the top of upper orifice plate 7 was the clear solution side, and the below is the turbid solution side, when the filter inlet pressure was done, the top of lower orifice plate 11 was the turbid solution side, the below was the clear solution side, the filter was after the installation was accomplished or before shutting down to reset, and because the workshop may have pollutant such as dust, filter element assembly 8 inside also can advance the dust, generally need the complete machine to infuse and wash, pass through inlet 5 continuous let in washing liquid promptly and wash, and need the inside raffinate of drainage after predetermineeing time, avoid remaining washing liquid pollution electronic grade chemical's quality.

In this embodiment, waste liquid channel 9 sets up to L shape, can clean the washing liquid and the impurity of upper filter unit clear liquid side, and the interior counter bore 12 that sets up on the lower orifice plate 11 makes the filter core subassembly local filter face be less than the upper plane of lower orifice plate 11, and during the filter-pressing of intaking, the washing liquid of the turbid liquid side of being convenient for is permeated and is flowed into the clear liquid side of lower cover 3, and lower cover 3 bottommost department is equipped with end filtrate outlet 6, and the liquid of being convenient for remains clean evacuation, and the filter can put into use after thoroughly wasing this moment.

Referring to fig. 8-9, the filter element assembly 8 includes a filter element 801, a liquid outlet end isolation sleeve 802 and a tail end isolation sleeve 803 are respectively arranged at the upper end and the lower end of the filter element 801, a nut 804 is sleeved on the liquid outlet end isolation sleeve 802, and a liquid outlet channel 805 is further arranged in the middle of the liquid outlet end isolation sleeve 802.

Specifically, a first sealing ring 806 and a second sealing ring 807 are respectively arranged on the contact surface of the liquid outlet end isolation sleeve 802 with the filter element 801 and the nut 804, and a third sealing ring 808 is arranged on the contact surface of the tail end isolation sleeve 803 with the filter element 801.

In this embodiment, the filter element 801 is used as a filter element of a porous medium, so that solid particles can be intercepted on the outer surface, and meanwhile, liquid can flow to the clear liquid side through the filter element 801, and the filter element components in the two groups of filter units are identical in structure and different in installation form.

In this embodiment, the front end of the filter element 801 is provided with a liquid outlet end isolation sleeve 802, which is of a hollow structure and is used for the liquid to flow to the clear liquid side, the center of the filter element 801 is also provided with threads which are screwed with the inner hole of the filter element 801, an upper boss is sleeved on the outer wall of the filter element 801, the inner side of the filter element is provided with a sealing ring I806, solid particles in the set form cannot flow from the front end of the filter element to the inner wall of the filter element, meanwhile, the upper plane of the liquid outlet end isolation sleeve 802 is provided with a sealing ring II 807, and the liquid outlet end isolation sleeve is in contact with the lower plane of the upper orifice plate 7 during installation, and is tightly pressed after screwing the nut 804, so that the phenomenon that solids in the mixed liquid of filtering short circuit are not intercepted is avoided.

In this embodiment, the tail end of the filter element 801 is provided with a tail end isolation sleeve 803, the center of the tail end isolation sleeve 803 is provided with threads and screwed in the inner hole of the filter element 801, an upper boss is sleeved on the outer wall of the filter element 801, and a sealing ring III 808 is arranged on the inner side of the filter element, so that solid particles cannot flow from the tail end of the filter element to the inner wall of the filter element in the arrangement mode.

Referring to fig. 2, the back flush assembly comprises a filtrate pipe 13 connected to the top of the seal head 1, the other end of the filtrate pipe 13 is connected with a filtrate collecting port 14, the bottom of the filtrate collecting port 14 is connected with a back flush port 15, the middle position of the filtrate pipe 13 is also connected with a support rod 16, and the other end of the support rod 16 is connected to the filter cylinder 2.

In this embodiment, after the filtering operation is completed, the filter is pressurized to dry the residual liquid in the filter by the lower filter unit after air intake, and then the back washing operation is started, the back washing liquid is introduced into the back washing port 15, flows to the supernatant side through the filtrate pipe 13, then reversely passes through the filter element 801, the impurities on the outer surface of the filter are backflushed and separated, the filter surface is cleaned and regenerated, and after the preset back washing time is reached, the residual liquid in the filter is pressurized to dry by the lower filter unit after air intake.

Referring to fig. 5, the cover opening assembly includes a reciprocating cylinder 17 provided on the filter cylinder 2, the other end of the reciprocating cylinder 17 is connected to the lower cover 3, a movable hinge 18 is further connected to the lower cover 3, and a fixed end of the movable hinge 18 is connected to the lower side of the filter cylinder 2.

In this embodiment, the filter cylinder 2 is provided with the reciprocating cylinder 17, meanwhile, both the filter cylinder 2 and the lower cover 3 are provided with the movable hinge 18, after the caliper screw 20 is loosened and removed, the reciprocating cylinder 17 is extended out after the lower cover 3 is opened, impurities on the outer surface of the filter element 801 are cleaned, after the surface cleaning regeneration is completed, the reciprocating cylinder 17 is pulled back after the lower cover 3 is closed, the caliper screw 20 is installed and locked, and the filter can be put into use after the process is finished.

Referring to fig. 1, a plurality of studs 19 are fixedly installed at the connection of the head 1 and the filter cylinder 2, the plurality of studs 19 fix the upper orifice plate 7 between the head 1 and the filter cylinder 2, a caliper screw 20 is provided at the connection of the lower cover 3 and the filter cylinder 2, and the caliper screw 20 fixes the lower orifice plate between the lower cover 3 and the filter cylinder 2.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims

1. The back flushing electronic grade chemical filter is characterized by comprising a seal head (1), a filter cylinder (2), a lower cover (3) and an upper filtering unit and a lower filtering unit which are respectively arranged at the joint of the seal head and the filter cylinder from top to bottom;

The top of the seal head (1) is connected with a back flushing assembly, an air inlet (4) is arranged above the side face of the filter cylinder (2), a liquid inlet (5) is arranged at the bottom side of the filter cylinder, a bottom filtrate outlet (6) is arranged at the bottom of the lower cover (3), and the lower cover (3) and the filter cylinder (2) are connected together with a cover opening assembly;

The upper filtering unit comprises an upper pore plate (7) and a filter element assembly (8) positively arranged on the upper pore plate (7), a waste liquid channel (9) is arranged at the lowest point of the upper plane of the upper pore plate (7), and a waste liquid port (10) is arranged at the end part of the waste liquid channel (9);

The lower filtering unit comprises a lower pore plate (11), an inner counter bore (12) is formed in the lower pore plate (11), and the filter element assembly (8) is reversely arranged in the inner counter bore (12).

2. The back flush electronic grade chemical filter according to claim 1, wherein the filter element assembly (8) comprises a filter element (801), a liquid outlet end isolation sleeve (802) and a tail end isolation sleeve (803) are respectively arranged at the upper end and the lower end of the filter element (801), a nut (804) is sleeved on the liquid outlet end isolation sleeve (802), and a liquid outlet channel (805) is further arranged in the middle of the liquid outlet end isolation sleeve (802).

3. The back flush electronic grade chemical filter according to claim 2, wherein a first sealing ring (806) and a second sealing ring (807) are respectively arranged on the contact surface of the liquid outlet end isolation sleeve (802) with the filter element (801) and the nut (804), and a third sealing ring (808) is arranged on the contact surface of the tail end isolation sleeve (803) with the filter element (801).

4. The back flushing electronic grade chemical filter according to claim 1, wherein the back flushing assembly comprises a filtrate pipe (13) connected to the top of the seal head (1), the other end of the filtrate pipe (13) is connected with a filtrate collecting port (14), the bottom of the filtrate collecting port (14) is connected with a back flushing port (15), the middle position of the filtrate pipe (13) is also connected with a supporting rod (16), and the other end of the supporting rod (16) is connected to the filter cylinder (2).

5. A backwash electronic grade chemical filter according to claim 1, wherein the lid opening assembly comprises a reciprocating cylinder (17) arranged on the filter cylinder body (2), the other end of the reciprocating cylinder (17) is connected to the lower lid (3), a movable hinge (18) is further connected to the lower lid (3), and a fixed end of the movable hinge (18) is connected to the lower side of the filter cylinder body (2).

6. A backwash electronic grade chemical filter according to claim 1, characterized in that a plurality of studs (19) are fixedly mounted at the junction of the head (1) and the filter cylinder (2), a plurality of studs (19) fix the upper orifice plate (7) between the head (1) and the filter cylinder (2), a caliper screw (20) is provided at the junction of the lower cover (3) and the filter cylinder (2), and the caliper screw (20) fixes the lower orifice plate between the lower cover (3) and the filter cylinder (2).