CN112807771A - Process for manufacturing heat-resistant electromagnetic coil core plate - Google Patents
Process for manufacturing heat-resistant electromagnetic coil core plate Download PDFInfo
- Publication number
- CN112807771A CN112807771A CN202110001653.1A CN202110001653A CN112807771A CN 112807771 A CN112807771 A CN 112807771A CN 202110001653 A CN202110001653 A CN 202110001653A CN 112807771 A CN112807771 A CN 112807771A
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- Prior art keywords
- core plate
- electromagnetic coil
- coil core
- die
- resistant electromagnetic
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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
- B01D25/28—Leaching or washing filter cakes in the filter handling the filter cake for purposes other than regenerating
- B01D25/282—Leaching or washing filter cakes in the filter handling the filter cake for purposes other than regenerating for drying
- B01D25/284—Leaching or washing filter cakes in the filter handling the filter cake for purposes other than regenerating for drying by gases or by heating
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/36—Coil arrangements
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treatment Of Sludge (AREA)
- Filtering Materials (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- General Induction Heating (AREA)
Abstract
The invention relates to the field of filter presses, in particular to a process method for manufacturing a heat-resistant electromagnetic coil core plate. The core plate processing steps are as follows: firstly, paving a required amount of proportioned resin composite material into a lower forming die; covering a molding middle mold on the resin composite material, wherein one surface comprising the coil groove is a material contact surface; step three, applying pressure on the upper end of the forming middle mold and keeping the pressure for a certain time, and then taking out the forming middle mold; step four, finishing the laying of the electromagnetic coil according to the path of the coil groove pressed by the middle die in the molding in the step three; and step five, adding enough resin composite material into the lower molding die again to cover the upper molding die, increasing pressure on the upper molding die, heating to the temperature at which the material flows sufficiently, keeping constant temperature within a limited time, and cooling to the normal temperature.
Description
Technical Field
The invention relates to the field of filter presses, in particular to a process method for manufacturing a heat-resistant electromagnetic coil core plate.
Background
The filter press is a special filtering medium, a mechanical device for applying a certain pressure to a target to make liquid seep out, and is a common solid-liquid separation device. The filter press is very popular in the environmental protection industry, for example, the sewage is treated, because the sewage contains a large amount of sludge and harmful substances, the sewage can be better separated through the filter press, and the heating filter plate used for heating and drying the filter cake formed by the filter press directly influences the effect of the filter press. The heating core plate of the core in the existing heating plate is formed by fastening a plurality of parts together, so that the heating core plate has the defects of poor compression resistance effect, complex structure, multiple production processes, increased energy consumption, short service life and the like.
Disclosure of Invention
Based on this, it is necessary to provide a heat-resistant electromagnetic heating panel. The electromagnetic coil core plate is formed by heating and melting a high-temperature-resistant composite material containing an electromagnetic coil into a whole, and has the advantages of good anti-extrusion effect, simple structure, low energy consumption and long service life. In addition, a metal heating flat plate with micropores is directly covered above the grooves, so that liquid or steam seeped from the filter cloth covered in the filter chamber after the filter cake is extruded and heated has a good discharge effect, and the filter cake or filter residue can easily fall off.
A heat-resistant electromagnetic heating plate comprises a heat-resistant electromagnetic coil core plate, wherein a heating plate and a filter cake frame are sequentially covered on the heat-resistant electromagnetic coil core plate in a mirror symmetry mode by taking the heat-resistant electromagnetic coil core plate as the center, the two sides of the heat-resistant electromagnetic coil core plate are in a mirror symmetry mode, the outline of the electromagnetic coil core plate and the outline of the filter cake frame are in a square shape with the same size, the filter cake frame is in a hollow frame; wherein, the outline of the heating plate is consistent with the subsidence area on the electromagnetic coil core plate and is assembled in the subsidence area, the heating plate and the electromagnetic coil core plate are respectively provided with corresponding feeding holes in the vertical direction of the respective plate surfaces, the feeding holes of the heating plate and the feeding holes of the electromagnetic coil core plate have consistent aperture and are in sealed connection with the periphery, and the filtrate hole arranged on the filter cake frame and the filtrate hole arranged on the electromagnetic coil core plate have consistent aperture and are in sealed connection with the periphery; the electromagnetic coil core plate is hermetically connected with the periphery of the filter cake frame; and the inner side surface of the filter cake frame and one surface of the heating plate, which is far away from the electromagnetic coil core plate, form a filter chamber. When the filter press is placed in a filter press, the heating plate and the filter press plate are arranged at intervals, and the filtrate holes or the feed holes of the functional plates are respectively opposite to and combined with the through holes formed by arrangement to form a tubular structure. The filter pressing object enters the filter chamber of each function plate from the feed through hole to the feeder groove of the feed inlet of each function plate, and the filtrate flows into the pipeline formed by the filtrate through hole through the filtrate hole on each function plate. In the filter cake drying process, the electromagnetic coil core plate is electrified to generate a variable electromagnetic field, so that the heating plate generates vortex current to generate heat.
Furthermore, the filter cake frame is square, and the filter liquor holes are symmetrically arranged at four corners of the filter cake frame by taking the vertical center line of the filter cake frame as the center.
Furthermore, the electromagnetic coil core plate is an integrated whole formed by heating, curing and molding a temperature-resistant composite material containing an electromagnetic coil in the middle. The heating plate formed in this way has strong anti-extrusion capability and good temperature resistance effect, and the material can resist high temperature up to 210 ℃.
The settling zone is arranged on two side surfaces of the electromagnetic coil core plate, and the outline of the settling zone is a concave area corresponding to the outline of the periphery of the filter chamber.
Furthermore, a plurality of liquid passing grooves are formed in two side faces of the electromagnetic coil core plate at intervals by vertical walls, communicated liquid collecting grooves are formed in two ends of each liquid passing groove, a plurality of dark flow holes are formed in each liquid collecting groove, each dark flow hole is one end of a dark flow channel, and the other end of each dark flow channel is connected to a filtrate port. The liquid collecting tank is isolated by the vertical wall, the effect of supporting the heating plate is achieved, and the vertical wall bears stronger supporting effect in the process of extruding filter cakes due to the fact that the thickness of the heating plate is limited.
Further, the heating plate is a stainless steel flat plate. The material model can be 430, 304 or 316, the stainless steel contains iron element, has good magnetic conductivity, and can generate vortex current to heat under the action of the electromagnetic coil core plate. In addition, it has strong pressure resistance, no rustiness and durability. Is a better material selection. Of course, in different use places, according to different requirements, the heating plate can also be made of other iron-containing materials.
Furthermore, liquid outlet holes are distributed in the middle of the heating plate. The heating plate heats the filter cake and releases liquid or moisture generated by the pressed or heated filter cake, so that a large number of micropores are formed in the heating plate, and a large pit is not formed, so that the filter cake after heating and drying is easy to fall off.
Furthermore, the diameter of the liquid outlet hole is 4-8 mm. The aperture is not suitable to be too large, the filter cloth is possibly trapped to cause blockage due to too large aperture, the filter cake is not easy to fall off, and the filter liquor is not easy to circulate due to too small aperture.
Furthermore, the liquid passing groove is a transverse or longitudinal straight groove, the vertical wall is a transverse or longitudinal straight wall, the width of the vertical wall is 8-12 mm, and the width of the liquid passing groove is 15-18 mm.
Furthermore, the filter cake generated by the filter chamber, liquid generated by pressing or heating or steam thereof can enter the liquid through groove through the liquid hole from the heating plate, converge to the liquid collecting groove through the liquid through groove, enter the dark flow channel from the dark flow hole and then reach the filtrate hole.
The invention discloses a process method for manufacturing a heat-resistant electromagnetic coil core plate in a heat-resistant electromagnetic heating plate.
The prefabricated three-pair mold comprises a lower molding mold, a middle molding mold and an upper molding mold, wherein the bottom end of the lower molding mold comprises a structure on one side of the core plate, the top end of the upper molding mold comprises a structure on the other side of the core plate, and the middle molding mold comprises a coil groove for placing a path of the electromagnetic coil; the core plate processing steps are as follows: firstly, paving a required amount of proportioned resin composite material into a lower forming die; covering a molding middle mold on the resin composite material, wherein one surface comprising the coil groove is a material contact surface; step three, applying pressure on the upper end of the forming middle mold and keeping the pressure for a certain time, and then taking out the forming middle mold; step four, finishing the laying of the electromagnetic coil according to the path of the coil groove pressed by the middle die in the molding in the step three; and step five, adding enough resin composite material into the lower molding die again to cover the upper molding die, increasing pressure on the upper molding die, heating to the temperature at which the material flows sufficiently, keeping constant temperature within a limited time, and cooling to the normal temperature.
Drawings
Fig. 1 is a schematic exploded perspective view of a heat-resistant electromagnetic heating panel according to the present invention, including a heat-resistant electromagnetic coil core plate.
Fig. 2 is a perspective view of the heat-resistant electromagnetic heating panel according to the present invention.
Fig. 3 is a schematic front view of a heating plate in the heat-resistant electromagnetic heating plate of the present invention.
Fig. 4 is a front view schematically showing a heat-resistant electromagnetic coil core plate in the heat-resistant electromagnetic heating panel of the present invention.
Fig. 5 is an enlarged view of the area a in fig. 4.
Fig. 6 is a schematic reverse side view of a half-section electromagnetic coil core plate of the center sectional side of the heat-resistant electromagnetic coil core plate in the heat-resistant electromagnetic heating panel of the present invention.
Fig. 7 is a process flow diagram for manufacturing a heat resistant electromagnetic coil core plate.
The parts in the figure are marked as follows: the filter cake comprises an electromagnetic coil core plate 10, an electromagnetic coil 11, a core plate feed hole 12, a core plate filtrate hole 13, a half-section core plate 14, a coil groove 15, a fusion surface 16, a liquid through groove 171, a vertical wall 172, a liquid collecting groove 173, a dark flow hole 174, a dark flow channel 175, a settling zone 170, a fixing hole 18, a heating plate 21, a heating plate feed hole 22, a liquid outlet hole 23, a filter cake frame 31, a filter chamber 32, a filter cake frame filtrate hole 33 and a filter cake frame inner side surface 34.
The O-O is the central line of the heat-resistant electromagnetic heating plate, and is also the central line of the electromagnetic coil core plate, the heating plate and the filter cake frame.
Detailed Description
As shown in fig. 1 to 6, in the structure of the heat-resistant electromagnetic heating plate of the present invention, a heat-resistant electromagnetic coil core plate 10 is covered with a heat-generating plate 21 and a filter cake frame 31 in sequence by taking the heat-resistant electromagnetic coil core plate as a central mirror image. Wherein, the outline of the heating plate 21 is consistent with the subsidence area 170 (see the closed circle area indicated by the arrow of the subsidence area 170 in fig. 4) on the heat-resistant electromagnetic coil core plate 10 and is assembled in the subsidence area, the heating plate feed hole 22 and the core plate feed hole 12 have the same aperture and are opposite to the periphery to be hermetically connected to form a feed hole 12 (22), the filter cake frame filtrate hole 33 and the core plate filtrate hole 13 have the same aperture and are opposite to the periphery to be hermetically connected to form a filtrate hole 13 (33), the filter cake frame filtrate hole 33 and the core plate filtrate hole 13 can be connected together by bolts through the fixing holes 18, and the heat-resistant electromagnetic; the inner side surface 34 of the filter cake frame and one surface of the heating plate 21 far away from the heat-resistant electromagnetic coil core plate 10 form a filter chamber 32. The electromagnetic coil core plate 10 is a block of integral rectangular plate, and is cut from the central surface to form two half-section core plates 14, and the coil grooves 15 with the shape corresponding to the electromagnetic coil 11 can be seen from the reverse surface of the half-section core plates 14, namely the welding surface 16. The heat-resistant electromagnetic coil plate 10 is a whole formed by heating and curing a heat-resistant composite material containing an electromagnetic coil 11 in the middle.
As shown in fig. 3 and 4, a plurality of liquid passing grooves 171 separated by vertical walls 172 are arranged on both sides of the heat-resistant solenoid plate 10 in a mirror image manner, two ends of all the liquid passing grooves 171 are provided with communicated liquid collecting grooves 173, the liquid collecting grooves 173 are internally provided with communicated dark flow holes 174, the dark flow holes 174 are one ends of dark flow channels 175, and the other ends of the dark flow channels 175 are connected to filtrate holes 13 (33). The heat generating plate 21 is a stainless steel flat plate. The middle part of the heating plate 21 is distributed with liquid outlet holes 23 (see small points in fig. 3). The diameter of the liquid outlet hole 23 is 4-8 mm.
As shown in FIG. 4, as shown in FIG. 5, the enlarged view of the area A in FIG. 4, the liquid passing groove 171 is a transverse or longitudinal straight groove, the vertical wall 172 is a transverse or longitudinal straight wall, the width of the vertical wall 172 is c = 10-12 mm, and the width of the liquid passing groove 171 is d = 15-18 mm.
As shown in fig. 1 to 6, the filter pressing object enters the filter chamber 22 from the feed port 12 (22) (the filter chambers of the adjacent filter pressing plates and the heating plates in the filter press are combined together to form a large filter chamber, and the filter pressing object enters the large filter chamber), the filter cake generated in the filter chamber 32, the liquid generated by pressing or heating or the vapor thereof can enter the liquid passing groove 171 through the liquid outlet hole 23 of the heating plate 21, and the liquid passes through the liquid passing groove 171 to the liquid collecting groove 173 and enters the dark flow channel 175 from the dark flow hole 174 to the filtrate hole 13 (33).
The specific process method for manufacturing the heat-resistant electromagnetic coil core plate comprises the following steps,
as shown in fig. 1 to 4, the prefabricated upper molding die and the lower molding die are mirror-symmetrical structures, and both include: core plate feed holes 12, core plate filtrate holes 13, aeration slots 171, sump 173, blind flow holes 174, and blind flow channel 175.
As shown in fig. 7, the prefabricated three-pair mold comprises a lower molding die, a middle molding die and an upper molding die, wherein the bottom end of the lower molding die comprises a structure on one side of the electromagnetic core plate, the top end of the upper molding die comprises a structure on the other side of the electromagnetic core plate, and the middle molding die comprises a coil groove for placing a coil path; the processing steps of the electromagnetic core plate are as follows: laying a required amount of resin composite proportioning material into a lower forming die; covering a molding middle mold on the resin composite material, wherein one surface comprising the coil groove is a material contact surface; step three, applying pressure on the upper end of the forming middle mold and keeping the pressure for a certain time, and then taking out the forming middle mold; step four, finishing coil laying according to a coil groove path pressed by a middle die in the molding in the step three; and step five, adding enough material into the lower molding die again to cover the upper molding die, increasing pressure on the upper molding die, heating to the full flowing temperature of the material, keeping constant temperature within a limited time, and cooling to the normal temperature.
In the embodiment, the resin composite material in the first step comprises the following components: 94-96% of unsaturated resin, 1.0-3.4% of GF special yarn and 2.6-3.0% of curing assistant. The preferable mixture ratio is as follows: 95% of unsaturated resin, 1.3% of GF special yarn and 3.7% of curing assistant.
In the example, the required amount of material laying in the first step is the thickness of the material after being fully melted: 22-28 mm. A thickness of 25mm is often used in practice.
In the example, the coil groove of the mold in the molding in the second step is formed in a spiral involute shape.
In the example, the pressure applied to the mold in the third step is 400-450T. The pressure is usually 420T (ton).
In the example, the time limit in the third step is 5 to 8 minutes. The actual time is about 6 minutes.
In the example, the material full flow temperature in the fifth step is: 300 to 320 ℃. The actual temperature is about 300 deg.c.
In the example, the sufficient material is added in the fifth step, and the thickness of the material after cooling and forming is as follows: 40-50 mm. The actual control is 45 mm.
In the example, the pressure is increased to 600T-650T on the upper mold in the fifth step for 30-45 minutes. Preferably the pressure is 620T for a duration of 35 minutes.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, many alternatives and modifications can be made without departing from the spirit of the invention, which falls within the scope of the invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A process method for manufacturing a heat-resistant electromagnetic coil core plate is characterized by comprising the following steps: the prefabricated three-pair mold comprises a lower molding mold, a middle molding mold and an upper molding mold, wherein the bottom end of the lower molding mold comprises a structure on one side of the electromagnetic core plate, the top end of the upper molding mold comprises a structure on the other side of the electromagnetic core plate, and the middle molding mold comprises a coil groove for placing a coil path; the processing steps of the electromagnetic core plate are as follows: step one, paving a required amount of resin composite material into a lower forming die; covering a molding middle mold on the resin composite material, wherein one surface comprising the coil groove is a material contact surface; step three, applying pressure on the upper end of the forming middle mold and keeping the pressure for a certain time, and then taking out the forming middle mold; step four, finishing coil laying according to a coil groove path pressed by a middle die in the molding in the step three; and step five, adding enough material into the lower molding die again to cover the upper molding die, increasing pressure on the upper molding die, heating to the full flowing temperature of the material, keeping constant temperature within a limited time, and cooling to the normal temperature.
2. A process for manufacturing a heat resistant electromagnetic coil core plate as claimed in claim 1, wherein: the shaping is gone up the mould and is the mirror symmetry structure with the shaping lower mould, and both all contain: the core plate comprises a core plate feed hole, a core plate filtrate hole, a liquid through groove, a liquid collecting groove, a dark flow hole and a dark flow passage.
3. A process for manufacturing a heat resistant electromagnetic coil core plate as claimed in claim 1, wherein: the resin composite material in the first step comprises the following components: 94-96% of unsaturated resin, 1.0-3.4% of GF special yarn and 2.6-3.0% of curing assistant.
4. A process of making a heat resistant electromagnetic coil core plate as claimed in claim 3, wherein: in the first step, the required quantity of the material for paving is the thickness of the material after the material is fully melted: 22-28 mm.
5. A process of making a heat resistant electromagnetic coil core plate as claimed in claim 4, wherein: and the coil groove of the middle die in the second step is formed into a spiral involute shape.
6. A process of making a heat resistant electromagnetic coil core plate as claimed in claim 5, wherein: and step three, applying pressure to the middle die in the molding process to be 400-450T.
7. A process of making a heat resistant electromagnetic coil core plate as claimed in claim 6, wherein: the limited time in the third step is 5-8 minutes.
8. A process for manufacturing a heat resistant electromagnetic coil core plate as claimed in claim 1, wherein: the material full flowing temperature in the step five is as follows: 300 to 320 ℃.
9. A process of making a heat resistant electromagnetic coil core plate as claimed in claim 8, wherein: and in the step five, the sufficient material is added according to the standard that the thickness of the material after cooling and forming is as follows: 40-50 mm.
10. A process for manufacturing a heat resistant electromagnetic coil core plate as claimed in any one of claims 1 to 9, wherein: and increasing the pressure on the upper forming die in the fifth step to 600-650T for 30-45 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110001653.1A CN112807771A (en) | 2020-12-30 | 2020-12-30 | Process for manufacturing heat-resistant electromagnetic coil core plate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110001653.1A CN112807771A (en) | 2020-12-30 | 2020-12-30 | Process for manufacturing heat-resistant electromagnetic coil core plate |
| CN202011628714.9A CN112807770A (en) | 2020-12-30 | 2020-12-30 | Heat-resistant electromagnetic heating plate |
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| CN202011628714.9A Division CN112807770A (en) | 2020-12-30 | 2020-12-30 | Heat-resistant electromagnetic heating plate |
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| CN112807771A true CN112807771A (en) | 2021-05-18 |
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| CN202110001653.1A Pending CN112807771A (en) | 2020-12-30 | 2020-12-30 | Process for manufacturing heat-resistant electromagnetic coil core plate |
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| WO (1) | WO2022143584A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022143584A1 (en) * | 2020-12-30 | 2022-07-07 | 第一环保深圳股份有限公司 | Heat-resistant electromagnetic heating plate |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115915517A (en) * | 2022-08-31 | 2023-04-04 | 江门市江海区信诚电子加工部 | Electromagnetic heating plate and processing method thereof |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN112807770A (en) | 2021-05-18 |
| WO2022143584A1 (en) | 2022-07-07 |
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