CN112403049A - Filter plate filtering method of filter plate frame-free filter plate and filter plate of filter press - Google Patents
Filter plate filtering method of filter plate frame-free filter plate and filter plate of filter press Download PDFInfo
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- CN112403049A CN112403049A CN202011195651.2A CN202011195651A CN112403049A CN 112403049 A CN112403049 A CN 112403049A CN 202011195651 A CN202011195651 A CN 202011195651A CN 112403049 A CN112403049 A CN 112403049A
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- filter
- hole
- outer frame
- filter plate
- liquid inlet
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D25/00—Filters formed by clamping together several filtering elements or parts of such elements
- B01D25/12—Filter presses, i.e. of the plate or plate and frame type
- B01D25/21—Plate and frame presses
- B01D25/215—Construction of the filter plates, frames
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Abstract
The invention discloses a filter plate filtering method without a filter cloth plate frame and a filter plate of a filter press thereof, which are specifically carried out according to the following steps: forming the outer frame pore-free part and the middle pore part into a whole by sintering; filtrate flows through the liquid inlet channel through the liquid inlet hole on the upper side of the outer frame and is introduced into the middle microporous part, and in order to increase the speed of water flow, the filtrate is pressurized and solid particles in the filtrate are filtered out through the middle microporous part; the filtered filtrate flows through the filter hole channel in the middle micro-hole part, so that the filtrate can rapidly flow and is finally discharged through the discharge hole at the lower side of the outer frame; a filter cake layer is formed on the middle micro-hole part, the exhaust hole is blown, the middle micro-hole part is blown back by gas, and the filter cake layer adhered to the surface is directly removed; after the filter cake is removed, the micropores are regenerated by means of co-blowing of gas and water vapor or chemical dissolution, and the filtration flux is recovered, so that the filter cake can be reused. The invention has the characteristics of high filtering precision, smooth filtering and repeated use.
Description
Technical Field
The invention relates to the field of environment-friendly mechanical equipment, in particular to a filter plate filtering method of a filter plate without a filter cloth plate frame and a filter plate of a filter press.
Background
The existing plate and frame filter presses separate solid and liquid through filter cloth, and in the actual use process, because the processing level of the existing filter cloth is not high, the filtering precision is low, fine particles often leak, and in addition, the connection sealing between the filter cloth and the plate and frame is unreliable, 3% -10% of the solid small particles often leak into the liquid during use, so that the product loss is serious. For example, chinese patent publication No. CN2089834 discloses a filter plate in a solid-liquid separation mechanism composed of a filter plate and a filter frame, wherein the filter plate has a hollow structure in the filter area part, and a plurality of small holes uniformly distributed on the surface, and the two are communicated; the washing liquid can be emitted to the filter cake (between the two filter plates) through the hollow structure and the small hole; the waste liquid penetrating through the filter cake can be discharged through a small hole and a hollow structure; the filter plate is provided with two washing holes: one of the three through holes is communicated with the hollow structure except the filter plate; the other is a 'through hole', which only penetrates through the filter plate; the three through holes and the passing holes of every two adjacent filter plates are opposite in a staggered way, namely the three through holes of one filter plate are opposite to the passing holes … … of the other adjacent filter plate, and the washing liquid and the waste liquid only enter and exit from the three-way holes and the passing holes; the flow direction of the washing liquid is controlled by the valve, so that the filter cake can be washed alternately in the positive direction and the negative direction. However, the present invention has problems in that the opposite surfaces of the concave-convex groove are not high in compressive strength, and are liable to be damaged, and the filter cloth has low accuracy and needs to be frequently replaced when damaged.
Disclosure of Invention
The invention aims to provide a filter plate filtering method without a filter cloth plate frame and a filter plate of a filter press. The invention has the characteristics of high filtering precision, smooth filtering and repeated use.
The technical scheme of the invention is as follows: a filter plate filtering method of a filter-cloth-free plate frame specifically comprises the following steps:
s1: forming the outer frame pore-free part and the middle pore part into a whole by sintering;
s2: filtrate flows through the liquid inlet channel through the liquid inlet hole on the upper side of the outer frame and is introduced into the middle microporous part, and in order to increase the speed of water flow, the filtrate is pressurized and solid particles in the filtrate are filtered out through the middle microporous part;
s3: the filtered filtrate flows through the filter hole channel in the middle micro-hole part, so that the filtrate can rapidly flow and is finally discharged through the discharge hole at the lower side of the outer frame;
s4: a filter cake layer is formed on the middle micro-hole part, the exhaust hole is blown, the middle micro-hole part is blown back by gas, and the filter cake layer adhered to the surface is directly removed; after the filter cake is removed, the micropores are regenerated by means of co-blowing of gas and water vapor or chemical dissolution, and the filtration flux is recovered, so that the filter cake can be reused.
The filter plate of the filter press for realizing the filter plate filtering method of the filter plate frame without the filter cloth comprises an imperforate outer frame, wherein a middle micro-hole part is arranged in the outer frame, a circulation structure is arranged inside the middle micro-hole part, a middle through hole is arranged in the middle of the middle micro-hole part, a plurality of bosses are arranged around the middle through hole, a liquid inlet hole communicated to the surface of the middle micro-hole part is arranged at the upper side of the outer frame, and a discharge hole communicated with the circulation structure is arranged at the.
In the filter plate of the filter press without filter cloth, the flow structure comprises a plurality of vertical filter pore channels arranged on the middle micro-pore part and a gathering filter pore channel at the bottom, and the vertical filter pore channels are communicated with the gathering filter pore channel.
In the filter plate of the filter press without filter cloth, the middle micro-hole part is also provided with a plurality of transverse filter hole channels which are vertical to the vertical filter hole channels.
In the filter plate of the filter press without filter cloth, the upper surface of the outer frame is provided with a liquid inlet channel, one end of the liquid inlet channel is communicated with the liquid inlet hole on the upper side of the outer frame, and the other end of the liquid inlet channel is communicated to the surface of the middle micro-hole part.
In the filter plate of the filter press without filter cloth and the plate frame, the lower side of the outer frame is internally provided with a discharge channel, one end of the discharge channel is communicated with a discharge hole on the lower side of the outer frame, and the other end of the discharge channel is communicated with the gathering filter hole channel.
In the filter plate of the filter press without filter cloth, one surface of the outer frame is provided with a groove, and the other surface of the outer frame is provided with an extending platform.
In the filter plate of the filter press without filter cloth, the middle microporous part is made of ultra-high molecular weight polyethylene.
In the filter plate of the filter press machine without the filter cloth, the distance between the front and back surfaces of the outer frame and the front and back surfaces of the middle micropore part is 5-80 mm.
In the filter plate of the plate-and-frame filter press without the filter cloth, the liquid inlet channel comprises one or more liquid inlet round holes, and one of the liquid inlet round holes is provided with a cross-shaped notch.
Compared with the prior art, the invention has the following advantages:
1. the invention is provided with a middle micro-hole part in an outer frame, a circulation structure is arranged in the middle micro-hole part, a middle through hole is arranged in the middle of the middle micro-hole part, a plurality of bosses are arranged around the middle through hole, an inlet hole communicated with the circulation structure is arranged on the upper side of the outer frame, and an outlet hole communicated with the circulation structure is arranged on the lower side of the outer frame; the inlet flow of filtrating through the frame upside is through inlet channel, lets in middle micropore portion, and the solid particle filtering of middle micropore portion in with filtrating can form the filter cake layer on the middle micropore portion after a period of time, and filtrating flows out from the discharge hole of frame downside through the circulation structure, realizes smooth and easy filtration, has improved filter fineness.
2. One side of the outer frame is provided with a groove, the other side of the outer frame is provided with an extension table, when a plurality of filter plates are combined together, the extension table on the previous filter plate is embedded into the groove of the next filter plate, the extension table and the filter plates are mutually matched, the matched compactness is increased, and the sealing effect is achieved.
3. Liquid inlet channel include one or more liquid inlet round holes, one of them liquid inlet round hole has the cross notch, the circulation passageway of this kind of shape is compared in ordinary circular passageway, can prevent that the passageway is blocked up completely to the granule, the filtrating still can smoothly circulate to reach from leading to the effect.
4. The material of the middle micro-hole part is ultra-high molecular weight polyethylene, and the material has super wear resistance, self-lubricating property, high strength, stable chemical property and strong ageing resistance, and is suitable for the working condition.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a flow-through configuration;
FIG. 3 is a schematic view of a transverse filter pore channel;
FIG. 4 is a schematic view of a liquid inlet channel;
FIG. 5 is a schematic view of a groove;
FIG. 6 is a schematic cross-sectional view of the liquid inlet channel;
FIG. 7 is a schematic view of the stacking of filter plates;
FIG. 8 is a cross-sectional view of a stack of filter plates;
FIG. 9 is a schematic view of the position of the inlet channel;
FIG. 10 is a schematic view of the discharge passage location;
description of the reference symbols in the drawings: 1-outer frame, 2-middle micro-hole part, 4-middle through hole, 5-boss, 6-flow structure, 7-vertical filter hole channel, 8-collective filter hole channel, 9-discharge hole, 10-transverse filter hole channel, 11-liquid inlet channel, 12-discharge channel, 13-groove, 14-extension platform, 15-liquid inlet hole and 16-liquid inlet circular hole.
Detailed Description
The invention is further illustrated by the following figures and examples, but is not to be construed as being limited thereto.
Example (b): a filter plate filtering method of a filter-cloth-free plate frame is characterized by comprising the following steps:
s1: forming the outer frame pore-free part and the middle pore part into a whole by sintering;
s2: filtrate flows through the liquid inlet channel through the liquid inlet hole on the upper side of the outer frame and is introduced into the middle microporous part, and in order to increase the speed of water flow, the filtrate is pressurized and solid particles in the filtrate are filtered out through the middle microporous part;
s3: the filtered filtrate flows through the filter hole channel in the middle micro-hole part, so that the filtrate can rapidly flow and is finally discharged through the discharge hole at the lower side of the outer frame;
s4: forming a filter cake layer on the middle micro-hole part, blowing air to the discharge hole, wherein the pressure of the air is generally 0.6Mpa, and directly removing the filter cake layer adhered to the surface by utilizing the air to blow back the middle micro-hole part; after the filter cake is removed, the micropores are regenerated by means of co-blowing of gas and water vapor or chemical dissolution, and the filtration flux is recovered, so that the filter cake can be reused.
The filter plate of the filter press for realizing the filter plate filtering method of the filter plate frame without the filter cloth comprises an outer frame 1 without holes, wherein the outer frame 1 has a three-layer structure, the middle layer is a soft elastic structure, the outer frame 1 is compressed after being subjected to extrusion force, a middle micropore part 2 is arranged in the outer frame 1, and a transition inclined plane is arranged between the outer frame and the middle micropore part; the material of the middle micro-hole part 2 is ultra-high molecular weight polyethylene, the molecular weight range is between 100 and 500 thousands, the material has super wear resistance, self-lubricating property, high strength, stable chemical property and strong anti-aging performance, and is suitable for the working condition. The distance between the front and back surfaces of the outer frame 1 and the front surface of the middle micro-hole part 2 is 5-80 mm. The inside of the middle micro-hole part 2 is provided with a flow structure 6, the middle of the middle micro-hole part 2 is provided with a middle through hole 4, the invention needs a plurality of filter plates to be overlapped together for working, as shown in figures 7 and 8, a positioning shaft passes through the middle through hole, and when the mechanical acting force on the outer frame is removed, the filter cake can be normally positioned and removed or the filter plates can be cleaned; the periphery of the middle through hole 4 is provided with a plurality of bosses 5 which are generally 4 in uniform arrangement, the front surface and the back surface of the middle micro-hole part 2 are respectively provided with the bosses 5 with the same quantity, the purpose of the bosses is that acting force during compaction can be mutually counteracted between adjacent filter plates, the filter plates cannot be damaged due to different filter cake layer thicknesses between the adjacent filter plates, the bosses are also provided with soft elastic structures, and when external pressure is applied to the vertical direction of the plane of the outer frame, the total thickness of the bosses at the two sides of the middle micro-hole part can be compressed to be consistent with the thickness of the outer frame; the upper side of the outer frame 1 is provided with a liquid inlet hole 15 communicated to the surface of the middle micro-hole part 2; the lower side of the outer frame 1 is provided with a discharge hole 9 which is communicated with the circulation structure 6. Flow structure 3 including setting up many perpendicular filtration pore passageways 7 and the filtration pore passageway 8 that gathers of bottom on middle micropore part 2, the filtrating can discharge fast through this passageway, improves filtration efficiency, as shown in fig. 2, many perpendicular filtration pore passageways 7 all with gather filtration pore passageway 8 intercommunication. The middle micro-hole part 2 is provided with a plurality of transverse filter hole channels 10 which are perpendicular to the vertical filter hole channels 7, as shown in fig. 3, the upper side surface of the outer frame 1 is provided with a liquid inlet channel 11, a transition inclined surface is arranged between the outer frame and the outer side surface of the middle micro-hole part, the liquid inlet channel is arranged on the transition inclined surface, as shown in fig. 10, the liquid inlet channel comprises one or more liquid inlet round holes, one of the liquid inlet round holes is provided with a cross-shaped notch, as shown in fig. 6, compared with a common circular channel, the flow channel with the shape can prevent particles from completely blocking the channel, filtrate can still flow out of the transverse channels on the side part of the hole, and the particles in the hole are flushed to a certain degree in the flow process to bring the particles out of the channel; one end of the liquid inlet channel 11 is communicated with the liquid inlet hole 15 on the upper side of the outer frame 1, and the other end is communicated with the surface of the middle micro-hole part 2, as shown in fig. 4, a discharge channel 12 is arranged inside the lower side of the outer frame 1, the discharge channel is arranged in the middle of the thickness direction of the outer frame plate, as shown in fig. 9, one end of the discharge channel 12 is communicated with the discharge hole 9 on the lower side of the outer frame 1, and the other end of the discharge channel 12 is communicated with the collecting filter hole channel 8. One side of the outer frame 1 is provided with a groove 13, and as shown in fig. 5, the other side of the outer frame 1 is provided with a protruding table 14. When a plurality of filter plates are combined together, the extension table on the previous filter plate is embedded into the groove of the next filter plate, the sealing ring is added at the matching part to improve the sealing effect, and the two filter plates are mutually matched to increase the matching tightness.
Claims (10)
1. A filter plate filtering method of a filter-cloth-free plate frame is characterized by comprising the following steps:
s1: the outer frame and the middle micropore part are integrated through sintering;
s2: filtrate flows through the liquid inlet channel through the liquid inlet hole on the upper side of the outer frame and is introduced into the middle microporous part, and in order to increase the speed of water flow, the filtrate is pressurized and solid particles in the filtrate are filtered out through the middle microporous part;
s3: the filtered filtrate flows through the filter hole channel in the middle micro-hole part, so that the filtrate can rapidly flow and is finally discharged through the discharge hole at the lower side of the outer frame;
s4: a filter cake layer is formed on the middle micro-hole part, the exhaust hole is blown, the middle micro-hole part is blown back by gas, and the filter cake layer adhered to the surface is directly removed; after the filter cake is removed, the micropores are regenerated by means of co-blowing of gas and water vapor or chemical dissolution, and the filtration flux is recovered, so that the filter cake can be reused.
2. The filter plate of a filter press for realizing the filter plate filtering method of the filter plate without the filter cloth plate frame of claim 1 is characterized in that: including frame (1), be equipped with middle micropore portion (2) in frame (1), the inside of middle micropore portion (2) is equipped with circulation structure (6), and middle micropore portion (2) are positive to be equipped with middle through-hole (4), and be equipped with a plurality of bosss (5) around middle through-hole (4), frame (1) upside is equipped with feed liquor hole (15) to middle micropore portion (2) surface, and frame (1) downside is equipped with discharge hole (9) with circulation structure (6) intercommunication.
3. The filter plate of a filter press without filter cloth according to claim 2, wherein: circulation structure (6) including setting up many perpendicular filtration pore passageway (7) on middle micropore portion (2) and gathering filtration pore passageway (8) of bottom, many perpendicular filtration pore passageways (7) all with gather filtration pore passageway (8) intercommunication.
4. The filter plate of a filter press without filter cloth according to claim 3, wherein: the middle micro-hole part (2) is also provided with a plurality of transverse filter hole channels (10) which are vertical to the vertical filter hole channels (7).
5. The filter plate of a filter press without filter cloth according to claim 2, wherein: the liquid inlet channel (11) is arranged on the upper side surface of the outer frame (1), one end of the liquid inlet channel (11) is communicated with the liquid inlet hole (15) on the upper side of the outer frame (1), and the other end of the liquid inlet channel is communicated to the surface of the middle micro-hole part (2).
6. The filter plate of a filter press without filter cloth according to claim 2, wherein: the inside of the lower side of the outer frame (1) is provided with a discharge channel (12), one end of the discharge channel (12) is communicated with a discharge hole (9) on the lower side of the outer frame (1), and the other end of the discharge channel (12) is communicated with the gathering filter hole channel (8).
7. The filter plate of a filter press without filter cloth according to claim 2, wherein: one side of the outer frame (1) is provided with a groove (13), and the other side of the outer frame (1) is provided with an extending platform (14).
8. The filter plate of a filter press without filter cloth according to claim 2, wherein: the middle micro-hole part (2) is made of ultra-high molecular weight polyethylene.
9. The filter plate of a filter press without filter cloth according to claim 2, wherein: the distance between the front and back surfaces of the outer frame (1) and the front and back surfaces of the middle micro-hole part (2) is 5-80 mm.
10. The filter plate of a filter press without filter cloth according to claim 5, wherein: the liquid inlet channel (11) comprises one or more liquid inlet circular holes (16), wherein one liquid inlet circular hole (16) is provided with a cross-shaped notch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011195651.2A CN112403049B (en) | 2020-10-30 | 2020-10-30 | Filter plate filtering method without filter cloth plate frame and filter plate of filter press |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011195651.2A CN112403049B (en) | 2020-10-30 | 2020-10-30 | Filter plate filtering method without filter cloth plate frame and filter plate of filter press |
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| Publication Number | Publication Date |
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| CN112403049A true CN112403049A (en) | 2021-02-26 |
| CN112403049B CN112403049B (en) | 2023-09-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011195651.2A Active CN112403049B (en) | 2020-10-30 | 2020-10-30 | Filter plate filtering method without filter cloth plate frame and filter plate of filter press |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2175514A (en) * | 1985-05-24 | 1986-12-03 | Karlsruhe Wiederaufarbeit | Apparatus for filtering radioactive slurry |
| CN2079560U (en) * | 1990-05-25 | 1991-06-26 | 朱兴源 | Press strainer with microporosity plastic strainer core |
| CN201040206Y (en) * | 2007-05-10 | 2008-03-26 | 孙晋繁 | Filter board of built-in pressure filter |
| CN201353446Y (en) * | 2008-09-17 | 2009-12-02 | 广州绿由工业弃置废物回收处理有限公司 | Filter cloth and filter press device of plate and frame filter press |
| CN201431810Y (en) * | 2009-04-08 | 2010-03-31 | 日照金禾博源生化有限公司 | Novel reinforced polypropylene filter press |
| CN104307229A (en) * | 2014-10-10 | 2015-01-28 | 广西金邦泰科技有限公司 | Quick anti-blocking filter press |
| CN104801079A (en) * | 2014-01-28 | 2015-07-29 | 国立中山大学 | Filter plate of filter press and manufacturing method thereof |
| CN107261581A (en) * | 2017-08-18 | 2017-10-20 | 郭俊海 | A kind of plate and frame type filter-press of new discharge way |
| CN111603815A (en) * | 2020-06-24 | 2020-09-01 | 景津环保股份有限公司 | Double-hole parallel feeding chamber type main and auxiliary plate combined filter chamber and double-feeding chamber type filter press |
-
2020
- 2020-10-30 CN CN202011195651.2A patent/CN112403049B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2175514A (en) * | 1985-05-24 | 1986-12-03 | Karlsruhe Wiederaufarbeit | Apparatus for filtering radioactive slurry |
| CN2079560U (en) * | 1990-05-25 | 1991-06-26 | 朱兴源 | Press strainer with microporosity plastic strainer core |
| CN201040206Y (en) * | 2007-05-10 | 2008-03-26 | 孙晋繁 | Filter board of built-in pressure filter |
| CN201353446Y (en) * | 2008-09-17 | 2009-12-02 | 广州绿由工业弃置废物回收处理有限公司 | Filter cloth and filter press device of plate and frame filter press |
| CN201431810Y (en) * | 2009-04-08 | 2010-03-31 | 日照金禾博源生化有限公司 | Novel reinforced polypropylene filter press |
| CN104801079A (en) * | 2014-01-28 | 2015-07-29 | 国立中山大学 | Filter plate of filter press and manufacturing method thereof |
| CN104307229A (en) * | 2014-10-10 | 2015-01-28 | 广西金邦泰科技有限公司 | Quick anti-blocking filter press |
| CN107261581A (en) * | 2017-08-18 | 2017-10-20 | 郭俊海 | A kind of plate and frame type filter-press of new discharge way |
| CN111603815A (en) * | 2020-06-24 | 2020-09-01 | 景津环保股份有限公司 | Double-hole parallel feeding chamber type main and auxiliary plate combined filter chamber and double-feeding chamber type filter press |
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