CN114288722A - Diaphragm squeezing process for processing raw materials of tiles and ceramic plates - Google Patents

Diaphragm squeezing process for processing raw materials of tiles and ceramic plates Download PDF

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Publication number
CN114288722A
CN114288722A CN202111662242.3A CN202111662242A CN114288722A CN 114288722 A CN114288722 A CN 114288722A CN 202111662242 A CN202111662242 A CN 202111662242A CN 114288722 A CN114288722 A CN 114288722A
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China
Prior art keywords
filter
diaphragm
plate
pressure
filter cloth
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Pending
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CN202111662242.3A
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Chinese (zh)
Inventor
彭幸华
彭培霖
谢朝宇
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Fujian Lopo Terracotta Panels Manufacturing Co ltd
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Fujian Lopo Terracotta Panels Manufacturing Co ltd
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Priority to CN202111662242.3A priority Critical patent/CN114288722A/en
Publication of CN114288722A publication Critical patent/CN114288722A/en
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Abstract

The invention discloses a diaphragm squeezing process for processing a raw material of a tile ceramic plate, which comprises the following steps: carrying out wet ball milling on pottery clay according to a certain proportion to obtain pottery mud slurry with appropriate parameters such as specific gravity, flow rate and the like, and adjusting a machine; first step of filter pressing: hydraulic oil promotes hydro-cylinder piston and compresses tightly filter cloth, the filter plate in the pressure filter, and the plunger pump is squeezed the pottery mud into the filter press, and the pottery mud gets into the filter chamber of compriseing filter cloth, diaphragm filter plate, and the pottery mud that flows in the filter chamber is under the separation effect of filter cloth, after squeezing, blows into the thick liquid mouth with the high-pressure gas drum, emits the filter cake, washes the diaphragm filter plate after the filter cake clearance to make things convenient for follow-up work. This diaphragm squeezing process is used in processing of brick and tile pottery board raw materials, reasonable in design, the filter cake moisture water content that obtains is low, and moisture distribution is even, is fit for brick and tile, the ceramic board shaping processing and uses, can reduce the damage of filter cloth, filter plate, improves the life of pressure filter frame, is fit for using widely.

Description

Diaphragm squeezing process for processing raw materials of tiles and ceramic plates
Technical Field
The invention belongs to the technical field of raw material processing of tiles and ceramic plates, and particularly relates to a diaphragm squeezing process for processing tiles and ceramic plates.
Background
The ceramic plate is the latest curtain wall material in the current building field, and has the advantages of environmental protection, energy conservation, moisture prevention, sound insulation, air permeability, rich color and luster, durability as new, wide application range and the like. The dry hanging installation is adopted, the replacement is convenient, a more flexible outer facade design solution is provided for design and application, and the urban beautification and the building activation are facilitated.
The molding technology used for manufacturing the ceramic plate is vacuum extrusion technology, which is a technology for extracting air in pug by using a vacuum pump and extruding the pug according to a specific mould. The molding method requires 16-20% of molding moisture of the pug, the pug has uniform moisture, and the difference between the highest part and the lowest part of the moisture is less than 1%. After the ceramic slurry is subjected to filter pressing and squeezing, not only can water in the slurry be removed to obtain usable slurry, but also harmful soluble salts mixed in the raw materials can be filtered, so that a mud cake with good raw material stability can be obtained.
The existing filter pressing process adopts a high-pressure slurry feeding mode, the obtained filter cake is high in water content and uneven in water content easily in the processing process, and the filter plate and the filter cloth are damaged under high pressure, so that the subsequent work is influenced.
Disclosure of Invention
The invention aims to provide a diaphragm pressing process for processing a raw material of a tile ceramic plate, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a diaphragm squeezing process for processing a tile ceramic plate raw material comprises the following steps:
s1, preparation of raw materials: carrying out wet ball milling on pottery clay for a certain time according to a certain proportion to obtain pottery mud slurry with appropriate parameters such as specific gravity, flow rate and the like;
s2, checking and adjusting the machine, and starting compaction, comprising the following steps:
a1, checking whether hydraulic oil in a plunger pump and a hydraulic station is sufficient and whether an oil product is clear, and if not, replacing the hydraulic oil in time;
a2, checking the state of the filter cloth, checking whether holes exist in the center and the edge of the filter cloth, checking whether filter cake slag which is adhered to a cleaning slurry inlet and a filter cloth surface and is not cleaned last time exists or whether the filter cloth is flat or not by not cleaning residues and fine ash on the surface of the filter cloth for a long time;
a3, checking the state of the filter plate, checking whether the diaphragm is damaged or not, and whether the joint of the diaphragm and the framework plate in the diaphragm plate is damaged or not;
a4, checking whether the inlet pipeline of the diaphragm plate pressing medium is connected well;
a5, inspecting a feed pipeline, a filtrate pipeline, other pipelines and the like to ensure that the pipelines are intact and not damaged;
a6, after the inspection is finished, starting a hydraulic station, pushing an oil cylinder piston by hydraulic oil in the hydraulic station, enabling a tail plate to move towards a head plate by generated pressing force, enabling a diaphragm plate and an auxiliary plate to be tightly attached, forming a filter chamber between the plates, and attaching central feed inlets of filter plates to each other to form a feed passage;
s3, press filtering and squeezing
A1, during filter pressing, a feed pump performs grouting in a feed pipeline in a low-pressure and high-flow-rate mode, all filter chambers are filled with ceramic mud slurry along with the increase of slurry inlet time, a solid particle layer on filter cloth becomes thick, the discharge resistance of filtrate is increased, the filtering efficiency is reduced, the feed pump is adjusted to perform grouting in a high-pressure and low-flow-rate mode, the filtering time is continuously increased, the outflow speed of the filtrate is gradually reduced to be incapable of flowing out, and at the moment, the filter chambers are filled with filter cakes which are preliminarily dehydrated;
a2, squeezing: closing the feeding pump, opening the high-pressure centrifugal pump, injecting high-pressure water into the squeezing medium inlet by the high-pressure centrifugal pump at a certain pressure, enabling the diaphragm to deform after the diaphragm cavity is filled with the high-pressure water, and squeezing a filter cake in the filter chamber by the diaphragm through filter cloth to achieve secondary dehydration;
s4, blowback
The high-pressure gas back blows the ceramic mud slurry at the central opening into the slurry tank, so that the water content of the filter cake is more uniform;
s5, unloading cake
After the back flushing is finished, pulling the diaphragm plate by using a plate pulling system of the filter press, dropping a filter cake on a collecting and transferring device for conveying away, shoveling part of the filter cake stuck on the filter cloth by using a shovel, and conveying the filter cake to a specified using place by using the collecting and transferring device;
and S6, washing the filter cloth after cleaning the filter cake, thereby facilitating subsequent work.
Further preferably, the series of filter cloths used in S2 has an air permeability of 108C and an air permeability of 10.
In a further preferred embodiment, the low slurry feeding pressure used in A1 is 0.8-6MPa, and the high slurry feeding pressure used is 1.0-1.3 MPa.
As a further preferable mode, the pressing pressure in A2 is 1.6-4.0 MPa.
As a further preferred solution, the pressing force of the hydraulic station used in A6 is 10-30 MPa.
As a further preferable scheme, the collecting and transferring device in S6 can be a belt conveyer belt, a chain plate conveyer belt, a skirt baffle conveyer belt, etc.
The invention has the technical effects and advantages that: the diaphragm pressing process for processing the raw materials of the brick, tile and ceramic plate has the advantages that through low-pressure grouting work, water in a filter cake cannot form a compact layer due to the fact that the filter cake by filter cloth is dehydrated too fast, dehydration efficiency is reduced, therefore, water inside and outside the filter cake is uniform, the filter cake can enter a pressing link again after primary dehydration through a diaphragm pressing plate, a centrifugal pump fills water (or gas) into a cavity of the diaphragm pressing plate, the cavity deforms to press the filter cake in a filter chamber through ultrahigh pressure, secondary dehydration is conducted, the whole diaphragm plate can swell, so that pressure is uniformly applied to the filter cake, dehydration is uniform, the pressure reaches high enough pressure, through primary low-pressure grouting work, the problems that excessive slurry feeding pressure is large in load of pressing force of a hydraulic station, slurry explosion and the like are caused are solved, and the service life of a filter press frame is prolonged. The diaphragm squeezing process for processing the raw materials of the brick and tile ceramic plate has reasonable design, can ensure that the obtained filter cake has even water distribution, can reduce the damage of filter cloth and filter plates, prolongs the service life of a frame of a filter press, and is suitable for popularization and use.
Drawings
FIG. 1 is a process diagram of the pressing process of the present invention;
FIG. 2 is a block diagram of the machine adjustment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a diaphragm pressing process for processing a tile ceramic plate raw material as shown in figures 1-2, which comprises the following steps:
s1, preparation of raw materials: carrying out wet ball milling on pottery clay for a certain time according to a certain proportion to obtain pottery mud slurry with appropriate parameters such as specific gravity, flow rate and the like;
s2, checking and adjusting the machine, and starting compaction, comprising the following steps:
a1: checking whether hydraulic oil in a plunger pump and a hydraulic station is sufficient and whether an oil product is clear, and if not, replacing the hydraulic oil in time;
a2: checking the state of the filter cloth, checking whether the center (slurry inlet) and the edge of the filter cloth have holes, and if so, replacing the filter cloth. If the filter cloth is provided with a hole, the slurry can flow away from the hole when slurry is fed. Cleaning filter cake slag which is adhered to the pulp inlet and the filter cloth surface and is not cleaned last time, or cleaning residue and fine ash on the filter cloth surface for a long time. If the filter cloth is not cleaned before filter pressing, the filter cake remained in the slurry inlet blocks the slurry inlet, and the slurry inlet efficiency is influenced. The residue fine ash on the surface of the filter cloth can block the gap of the filter cloth, increase the filtration resistance and reduce the filtration efficiency. Checking whether the filter cloth is flat or not, and if the filter cloth is wrinkled, flattening. The mud has low filtration efficiency at the position of uneven folds of the filter cloth, and the water content of the filter cake at the position is higher.
A3: the state of the filter plate is checked. The filter plate of the membrane filter press comprises two kinds of filter plates, namely a membrane plate and an auxiliary plate. The diaphragm plate is composed of two diaphragms which sandwich a skeleton plate, the diaphragms have elasticity and can stretch and retract, and the skeleton plate has no elasticity. Diaphragm cavities are arranged in the diaphragms and the framework plates, and squeezing media such as water and gas can enter the diaphragm cavities through the diaphragm media inlets, so that the two diaphragms deform outwards to achieve squeezing action. The auxiliary plate does not have the function of a diaphragm plate, and the diaphragm plate and the auxiliary plate are hung with filter cloth and are alternately arranged to form a filter chamber in the filter press. The squeezing medium with certain pressure is driven into the diaphragm cavity, and the mud cake in the filtering chamber is squeezed through the deformation of the diaphragm plate, so that the mud cake is deformed and is secondarily dehydrated, namely squeezing. And (4) detecting whether the diaphragm is damaged or not, and whether the joint of the diaphragm and the framework plate in the diaphragm plate is damaged or not. If damaged, the press media will flow into the damaged location and be discharged together through the filtrate outlet. The result is that the pressing pressure is not as desired and the filtration efficiency is low.
A4: and (3) checking whether the inlet pipeline of the diaphragm plate pressing medium is connected well, and if the inlet pipeline of the diaphragm plate pressing medium is not connected well, the pressing pressure is insufficient and the filtering efficiency is low.
A5: the feed pipeline, the filtrate pipeline, the rest pipelines and the like are inspected to ensure that the pipelines are intact and not damaged;
a6: after the inspection is finished, the hydraulic station is started, hydraulic oil in the hydraulic station pushes an oil cylinder piston, the tail plate moves towards the head plate due to the generated pressing force, the diaphragm plate and the auxiliary plate are tightly attached, a filter chamber is formed between the plates, and the central feed inlets of the filter plates are attached to each other to form a feed passage.
S3, press filtering and squeezing
A1: during filter pressing, a feeding pump injects slurry into a feeding pipeline in a low-pressure and high-flow-rate mode, a feeding pipe is connected with a feeding passage formed after compaction, and ceramic slurry is introduced into the feeding passage and gradually spread to each corner of the filter chamber from the head plate until the filter chamber is filled. When slurry is fed, the ceramic slurry is continuously contacted with the filter cloth, solid particles in the ceramic slurry are intercepted by the filter cloth (filter medium), and filtrate (aqueous solution) flows away through gaps of the filter cloth and enters a filtrate pipeline. With the increase of the slurry inlet time, the ceramic mud slurry is filled in all the filter chambers, the solid particle layer on the filter cloth becomes thick, the discharge resistance of the filtrate is increased, and the filtering efficiency is reduced. The feeding pump is adjusted to perform grouting in a high-pressure and low-flow-rate mode, the continuously increased filtering resistance is overcome by using high slurry inlet pressure, and the filtering efficiency is improved. The filtration time continues to increase and the outflow rate of the filtrate gradually decreases to a point where it cannot flow out. At this time, the filter chamber is filled with the filter cake to be preliminarily dehydrated, but the outside (close to the filter cloth) of the filter cake has low water content and the inside has high water content, because the filter resistance of the filtrate is larger (except for overcoming the resistance of the filter cloth, the resistance brought by the filter cake is also overcome) the further inwards. There has been no way to reduce the water content of the filter cake by increasing the feed pressure. At this point, the pressing stage is entered.
A2: squeezing: the feed pump was turned off and the high pressure centrifugal pump was turned on. High-pressure water is injected into the squeezing medium inlet by the high-pressure centrifugal pump at a certain pressure, the diaphragm deforms after the diaphragm cavity is filled with the high-pressure water, the filter cake in the filter chamber is squeezed by the diaphragm through the filter cloth, the filter cake shrinks to generate plastic deformation, the pores of the filter cake are reduced, and filtrate seeps in the filter cake and is discharged through the filter cloth, so that secondary dehydration is achieved. After the pressing is finished, because the filter cake is deformed by an even force generated by the deformation of the whole diaphragm instead of being extruded at a certain position, the water inside the filter cake is uniformly discharged, so that the difference of the water content of different points at the inner side and the outer side of the pressed filter cake and the same side is small, and the uniformity of the water is good.
S4, blowback
Because the central feed inlet of the filter plate is not contacted with the filter medium, the central opening of the filter cake after pressing is still slurry, and the water content of the filter cake can be influenced if the filter cake is directly discharged. Therefore, the ceramic mud at the central opening is blown back into the mud tank by high-pressure air, so that the water content of the filter cake is more uniform.
S5, unloading cake
And after the back flushing is finished, pulling the diaphragm plate by using a plate pulling system carried by the filter press, dropping the filter cake on a conveying belt for conveying, and shoveling part of the filter cake stuck on the filter cloth by using a shovel. The filter cake is transported by a conveyor belt to a designated point of use.
And S6, washing the filter cloth after cleaning the filter cake, thereby facilitating subsequent work.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims (6)

1. A diaphragm squeezing process for processing a tile ceramic plate raw material is characterized by comprising the following steps:
s1, preparation of raw materials: carrying out wet ball milling on pottery clay for a certain time according to a certain proportion to obtain pottery mud slurry with appropriate parameters such as specific gravity, flow rate and the like;
s2, checking and adjusting the machine, and starting compaction, comprising the following steps:
a1, checking whether hydraulic oil in a plunger pump and a hydraulic station is sufficient and whether an oil product is clear, and if not, replacing the hydraulic oil in time;
a2, checking the state of the filter cloth, checking whether holes exist in the center and the edge of the filter cloth, checking whether filter cake slag which is adhered to a cleaning slurry inlet and a filter cloth surface and is not cleaned last time exists or whether the filter cloth is flat or not by not cleaning residues and fine ash on the surface of the filter cloth for a long time;
a3, checking the state of the filter plate, checking whether the diaphragm is damaged or not, and whether the joint of the diaphragm and the framework plate in the diaphragm plate is damaged or not;
a4, checking whether the inlet pipeline of the diaphragm plate pressing medium is connected well;
a5, inspecting a feed pipeline, a filtrate pipeline, other pipelines and the like to ensure that the pipelines are intact and not damaged;
a6, after the inspection is finished, starting a hydraulic station, pushing an oil cylinder piston by hydraulic oil in the hydraulic station, enabling a tail plate to move towards a head plate by generated pressing force, enabling a diaphragm plate and an auxiliary plate to be tightly attached, forming a filter chamber between the plates, and attaching central feed inlets of filter plates to each other to form a feed passage;
s3, filter pressing and squeezing:
b1, during filter pressing, a feed pump performs grouting in a feed pipeline in a low-pressure and high-flow-rate mode, all filter chambers are filled with ceramic mud slurry along with the increase of slurry inlet time, a solid particle layer on filter cloth becomes thick, the discharge resistance of filtrate is increased, the filtering efficiency is reduced, the feed pump is adjusted to perform grouting in a high-pressure and low-flow-rate mode, the filtering time is continuously increased, the outflow speed of the filtrate is gradually reduced to be incapable of flowing out, and at the moment, the filter chambers are filled with filter cakes which are preliminarily dehydrated;
b2, squeezing: closing the feeding pump, opening the high-pressure centrifugal pump, injecting high-pressure water into the squeezing medium inlet by the high-pressure centrifugal pump at a certain pressure, enabling the diaphragm to deform after the diaphragm cavity is filled with the high-pressure water, and squeezing a filter cake in the filter chamber by the diaphragm through filter cloth to achieve secondary dehydration;
s4, blowback:
the high-pressure gas back blows the ceramic mud slurry at the central opening into the slurry tank, so that the water content of the filter cake is more uniform;
s5, cake unloading:
after the back flushing is finished, pulling the diaphragm plate by using a plate pulling system of the filter press, dropping a filter cake on a collecting and transferring device for conveying away, shoveling part of the filter cake stuck on the filter cloth by using a shovel, and conveying the filter cake to a specified using place by using the collecting and transferring device;
and S6, washing the filter cloth after cleaning the filter cake, thereby facilitating subsequent work.
2. The membrane pressing process for processing a tile ceramic plate raw material as claimed in claim 1, wherein the series of filter cloths used in S2 has an air permeability of 108C and an air permeability of 10.
3. The diaphragm pressing process for processing the raw material of the tile ceramic plate as claimed in claim 1, which is characterized in that: the pressing force of the hydraulic station used in A6 is 10-30 MPa.
4. The diaphragm pressing process for processing the raw material of the tile ceramic plate as claimed in claim 1, which is characterized in that: the low slurry feeding pressure used in the B1 is 0.8-6MPa, and the high slurry feeding pressure used in the B1 is 1.0-1.3 MPa.
5. The diaphragm pressing process for processing the raw material of the tile ceramic plate as claimed in claim 1, which is characterized in that: the pressing pressure in the B2 is 1.6-4.0 MPa.
6. The diaphragm pressing process for processing the raw material of the tile ceramic plate as claimed in claim 1, which is characterized in that: the device for collecting and transferring in the S6 can be a belt conveyer belt, a chain plate conveyer belt, a skirt baffle conveyer belt and the like.
CN202111662242.3A 2021-12-31 2021-12-31 Diaphragm squeezing process for processing raw materials of tiles and ceramic plates Pending CN114288722A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115477456A (en) * 2022-09-30 2022-12-16 青岛富祥合实业有限公司 Sludge dewatering treatment method and device
CN115845447A (en) * 2023-02-27 2023-03-28 泉州市德化县丰弘机械有限公司 Filter pressing assembly, filter press and ceramic mud production line

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101456656A (en) * 2008-12-30 2009-06-17 杭州兴源过滤机有限公司 Filtrating and squeezing process and system for desulphurization wastewater
CN101455915A (en) * 2008-12-30 2009-06-17 周立武 Desulfurization waste-water high-pressure filteration no-leakage system and technique
CN101474503A (en) * 2008-12-30 2009-07-08 杭州兴源过滤机有限公司 High-pressure filtering technique and system for desulfuration wastewater
CN109011742A (en) * 2018-06-22 2018-12-18 张日养 The method and device of filter press reduction process circulation time
CN112321122A (en) * 2020-09-27 2021-02-05 株洲天合天颐环境设备有限公司 Filtering method for filter pressing treatment of dehydration membrane of sludge filter press

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101456656A (en) * 2008-12-30 2009-06-17 杭州兴源过滤机有限公司 Filtrating and squeezing process and system for desulphurization wastewater
CN101455915A (en) * 2008-12-30 2009-06-17 周立武 Desulfurization waste-water high-pressure filteration no-leakage system and technique
CN101474503A (en) * 2008-12-30 2009-07-08 杭州兴源过滤机有限公司 High-pressure filtering technique and system for desulfuration wastewater
CN109011742A (en) * 2018-06-22 2018-12-18 张日养 The method and device of filter press reduction process circulation time
CN112321122A (en) * 2020-09-27 2021-02-05 株洲天合天颐环境设备有限公司 Filtering method for filter pressing treatment of dehydration membrane of sludge filter press

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115477456A (en) * 2022-09-30 2022-12-16 青岛富祥合实业有限公司 Sludge dewatering treatment method and device
CN115845447A (en) * 2023-02-27 2023-03-28 泉州市德化县丰弘机械有限公司 Filter pressing assembly, filter press and ceramic mud production line

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