CN109395441A - A kind of quick injection molding filter plate and preparation method - Google Patents
A kind of quick injection molding filter plate and preparation method Download PDFInfo
- Publication number
- CN109395441A CN109395441A CN201811426427.2A CN201811426427A CN109395441A CN 109395441 A CN109395441 A CN 109395441A CN 201811426427 A CN201811426427 A CN 201811426427A CN 109395441 A CN109395441 A CN 109395441A
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- Prior art keywords
- plate
- filter plate
- injection molding
- transition zone
- core plate
- Prior art date
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- Pending
Links
- 238000001746 injection moulding Methods 0.000 title claims abstract description 50
- 238000002360 preparation method Methods 0.000 title claims abstract description 21
- 230000007704 transition Effects 0.000 claims abstract description 37
- 239000000706 filtrate Substances 0.000 claims abstract description 32
- 238000004519 manufacturing process Methods 0.000 claims abstract description 26
- 238000003466 welding Methods 0.000 claims abstract description 5
- 238000001914 filtration Methods 0.000 claims description 12
- 238000002347 injection Methods 0.000 claims description 11
- 239000007924 injection Substances 0.000 claims description 11
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 238000000465 moulding Methods 0.000 claims description 6
- 238000005516 engineering process Methods 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- 238000005253 cladding Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000001816 cooling Methods 0.000 description 13
- 238000000034 method Methods 0.000 description 11
- 239000000047 product Substances 0.000 description 10
- 239000000463 material Substances 0.000 description 8
- 238000007493 shaping process Methods 0.000 description 8
- 239000010410 layer Substances 0.000 description 6
- 239000012530 fluid Substances 0.000 description 4
- 230000002035 prolonged effect Effects 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- 239000002344 surface layer Substances 0.000 description 3
- 238000004220 aggregation Methods 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000012065 filter cake Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
Classifications
-
- 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
- B01D25/001—Making filtering elements not provided for elsewhere
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14336—Coating a portion of the article, e.g. the edge of the article
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14467—Joining articles or parts of a single article
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/14—Filters
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The present invention relates to a kind of quick injection molding filter plate and preparation methods, it includes filter plate, the filter plate includes core plate, frame, boss, salient point and transition zone, the core plate is prefabricated, frame, boss, salient point and transition zone are to be fixedly connected to be integrally formed with core plate welding by injection molding manner, the salient point, the surface of filter plate is arranged in boss and transition zone, it is provided with filtrate on the outside of the filter plate and collects hole, the filtrate is collected bore ends and is connect with filtrate hole, the filtrate bore ends are connect with the filtrate leadout hole being arranged on frame；Total, the present invention has the advantages that structurally reasonable, production is simple, production efficiency and with high accuracy.
Description
Technical field
The invention belongs to filter plate technical fields, and in particular to a kind of quick injection molding filter plate and preparation method.
Background technique
Chamber-type press filter working principle is that filter chamber is rearranged by filter plate, and filter plate two sides are recessed, and every two pieces of filter plates are combined into
One compartment shape filter chamber, there are salient point and boss in the surface of filter plate, and to supporting filter cloth, when filtering needs filter cloth to intercept the work of solid particle
With after filtrate penetrates filter cloth, the water channel that the salient point through filter surface is formed is discharged through filtrate hole；Existing filter plate is mainly given birth to
Production. art: pp material is put into after compacting tool set compacting is cooled and shaped after extruder melts raw material and forms blank, so
Being removed from the molds afterwards ensures its apparent size to completely not cooling blank progress cooling and shaping, by long-time cooling and shaping
Processing is machined out to it afterwards, the design and material then by subsequent processing completion production, but due to its filter plate are asked
Topic causes it to need prolonged compression moulding, cooling and shaping processing, the thickness of the wall thickness of the wall thickness and internal chamber on four sides
Maximum difference have more than 1 times, in this way blank suppress when inside wall thickness it is relatively thin place needed for be cooled and shaped the time it is short, and wall thickness compared with
Thick place is not also completely cooling, wall thickness place shrinkage stomata easy to form, the local cooling velocity of wall thickness and the thin handover of wall
It differs greatly and is also easy to be formed the region of stress concentration, filter plate two sides filter chamber not uniform thickness is easy to appear in cooling and shaping, after causing
Filter cake thickness error is larger in phase use, causes to be easy breakage in filter plate use due to above-mentioned processing technology and method；
Therefore provide it is a kind of it is structurally reasonable, production is simple, production efficiency and quick injection molding filter plate with high accuracy and preparation method.
Summary of the invention
The purpose of the invention is to overcome the deficiencies in the prior art, and provide it is a kind of it is structurally reasonable, production is simple, production
Efficiency and quick injection molding filter plate with high accuracy and preparation method.
The object of the present invention is achieved like this: a kind of quick injection molding filter plate and preparation method, it includes filtering
Plate, the filter plate include core plate, frame, boss, salient point and transition zone, the core plate be it is prefabricated, frame, boss,
Salient point and transition zone are to be fixedly connected to be integrally formed with core plate welding by injection molding manner, the salient point, boss and transition zone
The surface of filter plate is set, filtrate is provided on the outside of the filter plate and collects hole, the filtrate collects bore ends and filter
Fluid apertures connection, the filtrate bore ends are connect with the filtrate leadout hole being arranged on frame.
The inside core plate is plate, can be solid core plate is also the hollow slab or core plate for having internal styling
Locally there is the plate of several through-hole on surface, and the plate of internal core plate can be injection molding, extrusion is also possible to molding production, core
Plate with a thickness of filtering plate thickness 1/8-1/2.
The salient point is uniformly arranged in the surface of transition zone on core plate, transition zone with a thickness of 2-8mm.
The frame and salient point junction is provided with mouth of pipe, and connection filtrate leadout hole is provided at the mouth of pipe
Tap.
The filter plate is that the multilayer coating structure of thinner thickness forms, and is combined to one by different processing technologys
It rises, is first put into prefabricated core plate plate in mold as body insert, using injection molding manner to main body surrounding and two sides
It is injection moulded frame, boss, salient point and transition zone.Thick every layer of the thickness of layered shaping is thinned relatively, when shortening processing sizing
Between, improve the production efficiency of product.
The filter plate carries out surrounding cladding to intermediate core plate when being injection moulded frame, boss, salient point and transition zone,
It or is the upper and lower surface sticked with intermediate core plate.
The filter plate after injection moulding, protect by the difference in height of the salient point upper surface on the sealing surface and transition zone of filter plate
It holds in 1-30mm.
The connecting hole for having one or more two sides penetrating between the transition zone of core plate two sides when the described quadric injection mould, through-hole
It is that the transition zones of filter plate two sides communicates.
Any position in circumferential side frame can be set in the intermediate feed hole.
Beneficial effects of the present invention: traditional thicker filter plate is split into thinner thickness multilayer coating structure knot by the present invention
Structure, the mode for reusing injection molding are incorporated at one piece, due to intermediate core plate be it is prefabricated, when the resin fluid of heat flow to it is intermediate
When core plate, core plate surface layer slightly soluble makes covering material firmly in conjunction with core plate, and it is lower to remain temperature inside core plate, so
Cooling down characteristic time in a mold will greatly reduce, and improve production efficiency, due to the built-in fitting that middle plate is injection molding, middle plate two
Side is the frame and boss of injection molding, so that the thinner thickness of middle plate two sides, it is on the make easy to form to eliminate traditional filtering plate
The defects of stomata, shrinkage porosite, while the phenomenon of filter chamber two sides depth not etc. is also avoided, since the thickness of each layer reduces shrinkage
Just and then reduce, product size precision has obtained good control, and product accuracy improves, it will reducing reserved processing capacity reduces
Cost, the blank of such injection molding do not need prolonged cooling and shaping, and optionally working process becomes product, and the later period uses
The method for improving injection precision can realize that filter plate exempts to process, and high-intensitive medium-thick plate merges by force with the material of frame and boss
Degree reaches requirement enough, can greatly reduce the molding time of filter plate production, improves production efficiency；In short, the present invention has
It is structurally reasonable, production is simple, production efficiency and advantage with high accuracy.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of a kind of quick injection molding filter plate of the present invention and preparation method.
Fig. 2 is the right view of a kind of quick injection molding filter plate of the present invention and preparation method.
Fig. 3 is filter plate quadric injection mould figure in a kind of quick injection molding filter plate of the present invention and preparation method.
In figure: 1, frame 2, core plate 3, balance hole 4, feed opening 5, filtrate leadout hole 6, filtrate hole 7, filter
Liquid collect hole 8, salient point 9, boss 10, connecting hole 11, transition zone 12, salient point upper surface 13, sealing surface 14,
Mouth of pipe 15, tap.
Specific embodiment
Following further describes the present invention with reference to the drawings.
Embodiment 1
As shown in Figure 1, Figure 2, Figure 3 shows, a kind of quick injection molding filter plate and preparation method, it includes filter plate, the mistake
Filter plate includes core plate 2, frame 1, boss 9, salient point 8 and transition zone 11, the core plate 2 be it is prefabricated, it is frame 1, boss 9, convex
Point 8 and transition zone 11 are to be fixedly connected to be integrally formed with 2 welding of core plate by injection molding manner, the salient point 8, boss 9 and mistake
The surface that filter plate is arranged in layer 11 is crossed, filtrate is provided on the outside of the filter plate and collects hole 7, the filtrate collects hole 7
End is connect with filtrate hole 6, and 6 end of filtrate hole is connect with the filtrate leadout hole 5 being arranged on frame 1.
In the use of the present invention, traditional thicker filter plate is split into thinner thickness multilayer coating structure by the present invention,
The mode for reusing injection molding is incorporated at one piece, due to intermediate core plate be it is prefabricated, when the resin fluid of heat flows to intermediate core
When plate, core plate surface layer slightly soluble makes covering material firmly in conjunction with core plate, and it is lower to remain temperature inside core plate, so
Cooling characteristic time will greatly reduce in mold, improve production efficiency, due to the built-in fitting that middle plate is injection molding, middle plate two sides
For the frame and boss of injection molding, so that the thinner thickness of middle plate two sides, eliminates traditional filtering plate on the make gas easy to form
The defects of hole, shrinkage porosite, while the phenomenon of filter chamber two sides depth not etc. is also avoided, since the thickness of each layer reduces shrinkage also just
And then reduce, product size precision has obtained good control, and product accuracy improves, it will reduce reserved processing capacity reduce at
This, the blank of such injection molding does not need prolonged cooling and shaping, and optionally working process becomes product, and the later period uses and mentions
The method of high injection precision can realize that filter plate exempts to process, and the material aggregation strength of high-intensitive medium-thick plate and frame and boss
Reach requirement enough, can greatly reduce the molding time of filter plate production, improves production efficiency；Total, the present invention has knot
Structure is reasonable, makes simple, production efficiency and advantage with high accuracy.
Embodiment 2
As shown in Figure 1, Figure 2, Figure 3 shows, a kind of quick injection molding filter plate and preparation method, it includes filter plate, the mistake
Filter plate includes core plate 2, frame 1, boss 9, salient point 8 and transition zone 11, the core plate 2 be it is prefabricated, it is frame 1, boss 9, convex
Point 8 and transition zone 11 are to be fixedly connected to be integrally formed with 2 welding of core plate by injection molding manner, the salient point 8, boss 9 and mistake
The surface that filter plate is arranged in layer 11 is crossed, filtrate is provided on the outside of the filter plate and collects hole 7, the filtrate collects hole 7
End is connect with filtrate hole 6, and 6 end of filtrate hole is connect with the filtrate leadout hole 5 being arranged on frame 1, and described is interior
Portion's core plate 2 is plate, can be solid core plate is also the hollow slab for having internal styling, or locally has several through-hole
Plate, the plate of internal core plate 2 can be injection molding, squeezes out and is also possible to molding production, core plate 2 with a thickness of filtering plate thickness
1/5-1/2, the salient point 8 is uniformly arranged in the surface of transition zone 11 on core plate 2, transition zone 11 with a thickness of 2-
8mm, the frame 1 and 8 junction of salient point are provided with mouth of pipe 14, and connection filtrate export is provided at the mouth of pipe 14
The tap 15 in hole 5, the filter plate are the multilayer coating structure of thinner thickness, are combined to one by different processing technologys
It rises, is first put into prefabricated 2 plate of core plate in mold as body insert, using injection molding manner to main body surrounding and two sides
It is injection moulded frame 1, boss 9, salient point 8 and transition zone 11, the filter plate is in injection moulding frame 1, boss 9,8 and of salient point
Surrounding cladding is carried out to intermediate core plate 2 when transition zone 11, or only sticks the upper and lower surface with intermediate core plate 2, the mistake
For filter plate after injection moulding, the sealing surface of filter plate and the difference in height of 8 upper surface of salient point on transition zone 11 are maintained at 1-30mm,
There are one or more connecting holes 10 between the transition zone 11 of 2 two sides of core plate when the described quadric injection mould, through-hole is filter plate two sides
Transition zone communicate, any position in circumferential side frame 1 can be set in the intermediate feed hole 4.
In the use of the present invention, traditional thicker filter plate is split into thinner thickness multilayer coating structure by the present invention,
The mode for reusing injection molding is incorporated at one piece, due to intermediate core plate be it is prefabricated, when the resin fluid of heat flows to intermediate core
When plate, core plate surface layer slightly soluble makes covering material firmly in conjunction with core plate, and it is lower to remain temperature inside core plate, so
Cooling characteristic time will greatly reduce in mold, improve production efficiency, due to the built-in fitting that middle plate is injection molding, middle plate two sides
For the frame and boss of injection molding, so that the thinner thickness of middle plate two sides, eliminates traditional filtering plate on the make gas easy to form
The defects of hole, shrinkage porosite, while the phenomenon of filter chamber two sides depth not etc. is also avoided, since the thickness of each layer reduces shrinkage also just
And then reduce, product size precision has obtained good control, and product accuracy improves, it will reduce reserved processing capacity reduce at
This, the blank of such injection molding does not need prolonged cooling and shaping, and optionally working process becomes product, and the later period uses and mentions
The method of high injection precision can realize that filter plate exempts to process, and the material aggregation strength of high-intensitive medium-thick plate and frame and boss
Reach requirement enough, can greatly reduce the molding time of filter plate production, production efficiency is improved, when filter plate needs when in use
When bearing larger pressure and higher-strength, in filter plate quadrangle, processing tap is directly connected to filtrate leadout hole, avoids because of filter
Canal path is too long, and bearing strength is too big and is damaged, and influences the effect of filtering squeezing, core plate two sides transition zone when quadric injection mould
Between have one or more two sides penetrating connecting hole, the resin of two sides is smoothly passed through, can uniformly be coated
In the two sides of core plate, through-hole is that the transition zone of filter plate two sides communicates, and simplifies processing technology, the structure for improving filter plate is strong
Degree；Total, the present invention has the advantages that structurally reasonable, production is simple, production efficiency and with high accuracy.
Claims (9)
1. a kind of quick injection molding filter plate and preparation method, it includes filter plate, it is characterised in that: the filter plate packet
Include core plate, frame, boss, salient point and transition zone, the core plate be it is prefabricated, frame, boss, salient point and transition zone are to pass through
Injection molding manner is fixedly connected with core plate welding and is integrally formed, and the surface of filter plate is arranged in the salient point, boss and transition zone,
It is provided with filtrate on the outside of the filter plate and collects hole, the filtrate is collected bore ends and connect with filtrate hole, the filtrate
Bore ends are connect with the filtrate leadout hole being arranged on frame.
2. a kind of quick injection molding filter plate as described in claim 1 and preparation method, it is characterised in that: the inside
Core plate is plate, can be solid core plate is also to have the hollow slab of internal styling or core plate surface locally to have several logical
The plate of open-work, the plate of internal core plate can be injection molding, squeeze out be also possible to molding production, core plate with a thickness of filtering plate thickness
1/8-the 1/2 of degree.
3. a kind of quick injection molding filter plate as described in claim 1 and preparation method, it is characterised in that: the salient point
Uniformly be arranged in the surface of transition zone on core plate, transition zone with a thickness of 2-8mm.
4. a kind of quick injection molding filter plate as described in claim 1 and preparation method, it is characterised in that: the frame
Salient point junction is provided with mouth of pipe, the tap of connection filtrate leadout hole is provided at the mouth of pipe.
5. a kind of quick injection molding filter plate as described in claim 1 and preparation method, it is characterised in that: the filtering
Plate is the multilayer coating structure of thinner thickness, is grouped together by different processing technologys, first by prefabricated core plate plate
Be put into mold as body insert, using injection molding manner to main body surrounding and two sides injection moulding frame, boss, salient point and
Transition zone.
6. a kind of quick injection molding filter plate as described in claim 1 and preparation method, it is characterised in that: the filtering
Plate carries out surrounding cladding to intermediate core plate when being injection moulded frame, boss, salient point and transition zone, or only sticks and centre
The upper and lower surface of core plate.
7. a kind of quick injection molding filter plate as described in claim 1 and preparation method, it is characterised in that: the filtering
For plate after injection moulding, the difference in height of the salient point upper surface on the sealing surface and transition zone of filter plate is maintained at 1-30mm.
8. a kind of quick injection molding filter plate as described in claim 1 and preparation method, it is characterised in that: described is secondary
The connecting hole for having one or more two sides penetrating between the transition zone of core plate two sides when injection molding, through-hole are the transition zones of filter plate two sides
It communicates.
9. a kind of quick injection molding filter plate as described in claim 1 and preparation method, it is characterised in that: the centre
Any position in circumferential side frame can be set in feed opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811426427.2A CN109395441A (en) | 2018-11-27 | 2018-11-27 | A kind of quick injection molding filter plate and preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811426427.2A CN109395441A (en) | 2018-11-27 | 2018-11-27 | A kind of quick injection molding filter plate and preparation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109395441A true CN109395441A (en) | 2019-03-01 |
Family
ID=65455810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811426427.2A Pending CN109395441A (en) | 2018-11-27 | 2018-11-27 | A kind of quick injection molding filter plate and preparation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109395441A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112516632A (en) * | 2020-11-30 | 2021-03-19 | 浙江拉罗克过滤技术有限公司 | Chamber type filter plate of filter press with flow passage membrane |
| CN113043622A (en) * | 2021-03-22 | 2021-06-29 | 第一环保（深圳）股份有限公司 | Process for manufacturing integrated heat exchange plate with zigzag flow passage |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1989000495A1 (en) * | 1987-07-10 | 1989-01-26 | 3-D Composites Limited | Moulding method |
| JP2001129848A (en) * | 1999-11-08 | 2001-05-15 | Matsushita Electric Ind Co Ltd | Molded article, molding method, and housing |
| CN105619699A (en) * | 2016-03-23 | 2016-06-01 | 上海东杰高分子材料有限公司 | Embedding method for embedded part inside product |
| CN206950744U (en) * | 2017-06-14 | 2018-02-02 | 浙江复洁环保设备有限公司 | A kind of Combined filter board |
-
2018
- 2018-11-27 CN CN201811426427.2A patent/CN109395441A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1989000495A1 (en) * | 1987-07-10 | 1989-01-26 | 3-D Composites Limited | Moulding method |
| JP2001129848A (en) * | 1999-11-08 | 2001-05-15 | Matsushita Electric Ind Co Ltd | Molded article, molding method, and housing |
| CN105619699A (en) * | 2016-03-23 | 2016-06-01 | 上海东杰高分子材料有限公司 | Embedding method for embedded part inside product |
| CN206950744U (en) * | 2017-06-14 | 2018-02-02 | 浙江复洁环保设备有限公司 | A kind of Combined filter board |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112516632A (en) * | 2020-11-30 | 2021-03-19 | 浙江拉罗克过滤技术有限公司 | Chamber type filter plate of filter press with flow passage membrane |
| CN113043622A (en) * | 2021-03-22 | 2021-06-29 | 第一环保（深圳）股份有限公司 | Process for manufacturing integrated heat exchange plate with zigzag flow passage |
| CN113091492A (en) * | 2021-03-22 | 2021-07-09 | 第一环保（深圳）股份有限公司 | Integral zigzag flow passage heat exchange plate |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190301 |