CN111676734B - Glass spacing paper and preparation method thereof - Google Patents

Glass spacing paper and preparation method thereof Download PDF

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Publication number
CN111676734B
CN111676734B CN202010563993.9A CN202010563993A CN111676734B CN 111676734 B CN111676734 B CN 111676734B CN 202010563993 A CN202010563993 A CN 202010563993A CN 111676734 B CN111676734 B CN 111676734B
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pulp
valve
slurry
plc controller
tank
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CN111676734A (en
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甘雨生
俞刚
邵晓东
刘伍武
罗淑云
胡小军
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Guangdong Guanhao New Material R & D Co ltd
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Individual
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    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
    • D21B1/00—Fibrous raw materials or their mechanical treatment
    • D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
    • D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
    • D21B1/30—Defibrating by other means
    • D21B1/34—Kneading or mixing; Pulpers
    • D21B1/345—Pulpers
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
    • D21D1/00—Methods of beating or refining; Beaters of the Hollander type
    • D21D1/02—Methods of beating; Beaters of the Hollander type
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
    • D21D1/00—Methods of beating or refining; Beaters of the Hollander type
    • D21D1/20—Methods of refining
    • D21D1/30—Disc mills
    • D21D1/303—Double disc mills
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
    • D21D5/00—Purification of the pulp suspension by mechanical means; Apparatus therefor
    • D21D5/02—Straining or screening the pulp
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F11/00—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)

Abstract

The invention relates to glass spacing paper, which comprises spacing paper pulp and is characterized in that: the space paper pulp comprises 50-70% of native softwood pulp, 10-30% of native hardwood pulp and 10-20% of softwood chemi-mechanical pulp in percentage by mass; wherein the primary softwood pulp and the softwood chemi-mechanical pulp are mixed and pulped, and the pulping degree is 25-30 DEG SR; and independently pulping the primary hardwood pulp, wherein the pulping degree is 20-25 DEG SR. According to the glass spacing paper, a proper amount of needle-leaved wood chemi-mechanical pulp is added into raw materials of the glass spacing paper, and the needle-leaved wood chemi-mechanical pulp has high hardness, so that the air permeability of the glass spacing paper is improved, the glass spacing paper is endowed with high stiffness, the quality of the glass spacing paper is greatly improved, and the glass spacing paper with high stiffness, high mechanical strength and high air permeability is prepared.

Description

Glass spacing paper and preparation method thereof
Technical Field
The invention relates to the technical field of glass partition paper production, in particular to glass partition paper and a preparation method thereof.
Background
With the improvement of the consumption level of people, various electronic products such as smart phones, tablet computers, liquid crystal televisions and the like are more popular and household. The liquid crystal display screen is an important component of electronic products, has the characteristics of no radiation, no flicker, low energy consumption and the like, and is expected to be mainly the liquid crystal display screen in the coming years along with the progress of scientific technology and the steady increase of novel electronic products in the world. The electronic glass substrate is a core element constituting the liquid crystal display panel. However, in the process of storage, transportation and use of the electronic glass substrate, scratches are likely to occur due to the contact between the electronic glasses and the presence of hard attachments on the surface of the electronic glass. In addition, the surface of the electronic glass is easy to generate mildew under the environmental conditions of high temperature, high humidity and the like, and the mildew phenomena of white spots, rainbow, sticky patches and the like are generated due to physical change and chemical change. The electronic glass spacing paper is used for spacing between the substrate glass and the inner and outer base plates, so that the substrate glass can be conveniently taken and placed on the A-shaped frame in the production process; the surfaces of the substrate glass are prevented from being scratched and scratched mutually, the substrate glass is prevented from being adhered to each other, and the surfaces of the substrates are prevented from being polluted by particles. The glass substrate packaging and separating device is used for glass substrate production enterprises of TFT-LCD, TN, STN, CSTN, OLED and solar cell panels, is also called rear section packaging of glass spacing paper, glass spacing paper and glass spacing lining paper glass finished products for spaced use, can also be used for glass and glass spacing pads after a glass substrate is cut or thinned, effectively protects the glass from being scratched in the carrying process, inhibits the breeding of bacteria in the storage process, prevents the glass from mildewing, and improves the yield of the glass. Particularly, when a glass finished product is packaged, a piece of glass spacing paper is arranged between each piece of glass up and down, so that the scratching of the glass can be effectively reduced. Present glass spacer paper preparation quality is relatively poor, and need a plurality of garrulous thick liquid ponds to carry out the pulping that corresponds to its different raw and other materials usually, every garrulous thick liquid pond corresponds a slurry pumping pump and pumps thick liquid material behind the pulping, utilize the pump to pump thick liquid and carry out the beating processing in sending the two mill that correspond, still be mingled with the fibre of the insufficient garrulous thick liquid of part in the thick liquid after the pulping in the garrulous thick liquid pond, this part fibre often blocks up the pump easily, the problem that needs shut down to overhaul often appears in a plurality of pump pumps, cause the very big loss of manpower and materials, every pump all needs solitary maintenance equipment to correspond the maintenance arrangement, the high plant maintenance of manufacturing cost wastes time and energy.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the glass spacer paper which has high quality and low production cost and is convenient for controlling the blocked fibers in the discharge slurry pump and the preparation method thereof.
The technical scheme of the invention is realized as follows: the glass spacing paper comprises spacing paper pulp and is characterized in that: the space paper pulp comprises 50-70% of native softwood pulp, 10-30% of native hardwood pulp and 10-20% of softwood chemi-mechanical pulp in percentage by mass; wherein the primary softwood pulp and the softwood chemi-mechanical pulp are mixed and pulped, and the pulping degree is 25-30 DEG SR; and independently pulping the primary hardwood pulp, wherein the pulping degree is 20-25 DEG SR.
By adopting the technical scheme, a proper amount of needle-leaved wood pulp is added into the raw materials of the glass spacing paper, and the needle-leaved wood pulp has higher hardness, so that the air permeability of the glass spacing paper is improved, the glass spacing paper is endowed with higher stiffness, the quality of the glass spacing paper is greatly improved, and the glass spacing paper with high stiffness, high mechanical strength and high air permeability is prepared.
The invention also discloses a preparation system suitable for the glass partition paper, which comprises a first pulping tank for pulping original softwood pulp and softwood chemi-mechanical pulp, a second pulping tank for pulping original hardwood pulp, a pulp pump, a double grinding disc and a plc controller, and is characterized in that: the utility model discloses a pulping machine, including the pump of taking out thick liquid, the pump of taking out thick liquid end is connected with into thick liquid pipe, the pump of taking out thick liquid end is connected with out thick liquid pipe, the one end and the two mill feed inlets that the pump of taking out thick liquid was kept away from to out thick liquid pipe are connected, advance the thick liquid pipe and keep away from the one end of taking out the thick liquid pump and advance the pipe through first advancing respectively with the second and be connected with first garrulous thick liquid pond and the garrulous thick liquid bottom of the second, first advancing pipe and second advance to be provided with first on-off valve and second on-off valve on managing respectively, pump of taking out thick liquid, first on-off valve and second on-off valve are connected with the plc controller electricity respectively.
By adopting the technical scheme, the raw softwood pulp and the softwood chemi-mechanical pulp are mixed and then are pulped in the first pulping tank, the raw hardwood pulp is independently pulped in the second pulping tank, after pulping is finished, the pulp pump works under the control of the plc controller, the first on-off valve is opened, the second on-off valve is closed, the pulp in the first pulping tank is led into the double millstones through the first inlet pipe, the pulp inlet pipe and the pulp outlet pipe for pulping, after the pulp in the first pulping tank is led out, the plc controller transmits an electric signal to the first on-off valve and the second on-off valve, so that the first on-off valve is closed, the second on-off valve is opened, the pulp in the second pulping tank is led into the double millstones through the second inlet pipe, the pulp inlet pipe and the pulp outlet pipe for pulping, compared with the prior art, each independent pulping tank needs to be provided with the corresponding double millstones for pulping, and the requirements of equipment are reduced through pipelines, simultaneously, the thick liquid of taking out in first garrulous thick liquid pond and the garrulous thick liquid pond of second can be carried out to solitary pump pulp, when appearing taking out thick liquid and blockking up, only need to take out the thick liquid pump alone handle can, reduced corresponding maintenance equipment demand, reduction in production cost.
The invention is further configured to: the pump of taking out the milk includes the motor that is used for driving its forward or reverse pumping by plc controller control, be provided with on the motor and be used for detecting its actual energy consumption and feed back to the energy consumption monitoring feedback module of plc controller with plc controller electricity connection, advance thick liquid pipe and play thick liquid pipe and go up and be connected with and be used for supplying water power machine reverse pumping and filtering pump input end to block up fibrous water supply filter assembly, the plc controller is compared based on energy consumption monitoring feedback module and the normal runtime energy consumption default of motor on the plc controller, and transmission signal of telecommunication to the pump of taking out the milk when exceeding the inside predetermined motor normal operating upper limit consumption value of plc controller makes it stop the back pump of taking out again and washs and make the jam fibre of pump input end to the filtering assembly that supplies water in.
By adopting the technical scheme, in the process that the pulp pumping pump operates and works to pump the pulp in the first pulp crushing pool and the second pulp crushing pool, the current consumed by the operation of the motor on the pulp pumping pump is in a normal state interval, the energy consumption monitoring feedback module detects and feeds back the power consumption of the motor to the plc controller to be in the normal state interval, when excessive fiber which is not fully crushed pulp in the pulp pumped and passes through the pulp pumping pump is clamped at the pulp pumping pump to cause partial or complete blockage at the pulp pumping pump, the load level of the motor is increased to cause the actual current consumption of the motor to be increased, the energy consumption detecting feedback module detects that the actual power consumption of the motor is increased and feeds back the actual power consumption to the plc controller, when the actual power consumption exceeds the upper limit power consumption value of the motor preset in the plc controller during normal operation, the plc controller transmits an electric signal to the pulp pumping pump to enable the pulp pumping pump to reversely pump after the operation of the pulp pumping pump is stopped, the water supply filter assembly supplies water to the pulp pump, mixed water of fibers which are blocked or partially blocked at the input end of the pulp pump is fed into the water supply filter assembly for filtering in a reverse rotation state of the motor, the actual power consumption of the motor is detected by the energy consumption detection feedback module to be recovered to a power consumption value in normal operation and fed back to the plc controller, the plc controller drives the motor to reversely operate for a preset time and then stops, and then the pulp is normally pumped in a forward direction.
The invention is further configured to: the water supply filtering assembly comprises a water supply tank, a first filtering tank, a second filtering tank and a three-position four-way valve, the three-position four-way valve is provided with a left electromagnetic coil and a right electromagnetic coil, a valve core is normally positioned at the middle position by a left spring and a right spring, and the valve core is driven by the left electromagnetic coil or the right electromagnetic coil to deflect to a first position or a second position; the normal state is a middle position, the ports A1 and A3 are communicated, and the ports A2 and A4 are cut off; in the first position, port A3 and port a1 are closed and port a2 and port a4 are in communication; in the second position, port a1 and port A3 are blocked, port a2 and port a4 are blocked; port A1 and A2 are connected through first connecting pipe and advance thick liquid union coupling, port A3 is connected through second connecting pipe and first rose box inlet end, port A4 is connected through third connecting pipe and second rose box inlet end, first rose box exit end is connected with the feed tank through the fourth connecting pipe, second rose box exit end is connected with the feed tank through the fifth connecting pipe, the feed tank passes through the sixth connecting pipe and is connected with play thick liquid union coupling, be provided with the check valve that is arranged in one-way conduction feed tank normal water to play thick liquid pipe on the sixth connecting pipe, the one end that is close to two mill on the play thick liquid pipe is provided with out thick liquid on-off valve, the plc controller is connected with three-position cross valve, play thick liquid on-off valve electricity respectively.
By adopting the technical scheme, when excessive and insufficient fiber in the slurry pumped by the slurry pump is clamped at the slurry pump during the operation of the slurry pump in the first slurry crushing pool and the second slurry crushing pool, and the slurry pump is partially or completely blocked, the load level of the motor will rise, the actual current consumption of the motor rises, the actual power consumption of the motor is detected by the energy consumption detection feedback module and fed back to the plc controller, when the actual power consumption exceeds the upper limit power consumption value of the motor preset in the plc controller during normal operation, the plc controller transmits an electric signal to the slurry pump to stop the operation of the slurry pump and then reversely pump the slurry pump, and simultaneously, the plc controller respectively transmits the electric signal to the three-position four-way valve, the slurry outlet on-off valve, the first on-off valve and the second on-off valve to switch the slurry outlet on-off valve, the first on-off valve and the second on-off valve to a closed state, the three-position four-way valve is switched to a normal state, at the moment, the ports A1 and A3 are communicated, the ports A2 and A4 are cut off, water in the water supply tank is pumped to pass through the sixth connecting pipe and the one-way valve in a reverse pumping state of the slurry pump, a slurry pump is backflushed, fibers in the blocked slurry pump are mixed, fiber mixed water blocked by the slurry pump passes through the first filter tank through the slurry inlet pipe, the first connecting pipe and the second connecting pipe, the fibers are filtered out in the first filter tank, the water is continuously conveyed and is conveyed into the water supply tank through the fourth connecting pipe for recycling, after the fibers are filtered out by the first filter tank for a period of time, in order to prevent the excessive fibers filtered out in the first filter tank from influencing the filtering efficiency, an electrical signal is transmitted to the three-position four-way valve by a plc controller, the three-position four-way valve is switched to a first position, at the moment, the ports A3 and A1 are cut off, the ports A2 and A4 are communicated, after water in the water supply tank is pumped and passes through the sixth connecting pipe and the one-way valve, a pulp pumping pump is backflushed, fibers in the blocked pulp pumping pump are mixed, the fiber mixed water blocking the pulp pumping pump passes through the second filter tank through the pulp inlet pipe, the first connecting pipe and the third connecting pipe, the fibers are filtered out in the second filter tank, the water is continuously conveyed and is sent into the water supply tank through the fifth connecting pipe for recycling, in the filtering process of the second filter tank, the idle first filter tank is manually cleaned and regenerated, the fibers in the first filter tank are cleaned out for recycling and filtering out the fibers, after the fibers at the pulp pumping pump are reversely and continuously washed and discharged, the actual power consumption of the motor is detected by the energy consumption detection feedback module to be recovered to the power consumption value in normal operation and fed back to the plc controller, the plc controller drives the motor to reversely operate for a preset period of time and then stops, and then the plc controller respectively transmits an electric signal to the three-position four-way valve, the slurry outlet on-off valve, the first on-off valve and the second on-off valve, so that the three-position four-way valve is switched to a second position, at the moment, the port A1 and the port A3 are cut off, the port A2 and the port A4 are cut off, the slurry outlet on-off valve is opened, one sides of the first on-off valve and the second on-off valve, which are used for correspondingly pumping slurry, are opened, and the slurry pump pumps slurry normally, so that the slurry can be sent into the double grinding discs only through the slurry outlet pipe and the slurry outlet on-off valve due to the existence of the one-way valve after passing through the slurry pump.
The invention is further configured to: be provided with respectively on first rose box, the second rose box and be connected the first pressure differential sensor and the second pressure differential sensor who is used for real-time detection first rose box, second rose box inlet end and exit end relative pressure difference and transmit to the plc controller with plc controller electricity, communicate each other through the recoil connecting pipe between fourth connecting pipe and the fifth connecting pipe, be connected with first discharge pipe and second discharge pipe on second connecting pipe and the third connecting pipe respectively, be provided with first discharge on-off valve and second discharge on-off valve on first discharge pipe and the second discharge pipe respectively, first discharge on-off valve and second discharge on-off valve are based on when first pressure differential sensor or second pressure differential sensor entry end and exit end relative pressure difference value exceed predetermined value on the plc controller, and the corresponding first discharge on-off valve of control switch or second discharge on-off valve are opened, make the water filtered through first rose box recoil connecting pipe second rose box recoil filter box And the plc controller is electrically connected with the first discharge on-off valve and the second discharge on-off valve respectively.
By adopting the technical scheme, when excessive and insufficient fiber in the slurry pumped by the slurry pump is clamped at the slurry pump during the operation of the slurry pump in the first slurry crushing pool and the second slurry crushing pool, and the slurry pump is partially or completely blocked, the load level of the motor will rise, the actual current consumption of the motor rises, the actual power consumption of the motor is detected by the energy consumption detection feedback module and fed back to the plc controller, when the actual power consumption exceeds the upper limit power consumption value of the motor preset in the plc controller during normal operation, the plc controller transmits an electric signal to the slurry pump to stop the operation of the slurry pump and then reversely pump the slurry pump, and simultaneously, the plc controller respectively transmits the electric signal to the three-position four-way valve, the slurry outlet on-off valve, the first on-off valve and the second on-off valve to switch the slurry outlet on-off valve, the first on-off valve and the second on-off valve to a closed state, the three-position four-way valve is switched to a normal state, at the moment, the port A1 is communicated with the port A3, the port A2 is cut off from the port A4, water in the water supply tank is pumped to pass through the sixth connecting pipe and the one-way valve in a reverse pumping state of the slurry pump, the slurry pump is backflushed, fibers in the blocked slurry pump are mixed, fiber mixed water blocking the slurry pump passes through the first filter tank through the slurry inlet pipe, the first connecting pipe and the second connecting pipe, the fibers are filtered out in the first filter tank, the water is continuously conveyed and is conveyed into the water supply tank through the fourth connecting pipe for recycling, after the fibers are filtered out by the first filter tank for a period of time, if a first pressure difference sensor arranged on the first filter tank monitors and feeds back the relative pressure difference value of the inlet end and the outlet end of the first filter tank to the plc controller in real time, when the fibers are excessive in the first filter tank, the relative pressure difference value of the inlet end and the outlet end, after most of the filter screens in the first filter tank are blocked, the relative pressure difference value of the inlet end and the outlet end rises to exceed the preset value on the plc controller, at the moment, the plc controller transmits an electric signal to the three-position four-way valve and the first discharge on-off valve, the first discharge on-off valve is opened, the three-position four-way valve is switched to the first position, at the moment, the port A3 and the port A1 are cut off, the port A2 and the port A4 are communicated, water in the water supply tank is pumped to pass through the sixth connecting pipe and the one-way valve and then backflush the slurry pump, fibers in the blocked slurry pump are mixed, the fiber mixed water blocking the slurry pump passes through the second filter tank through the slurry inlet pipe, the first connecting pipe and the third connecting pipe, the fibers are filtered out in the second filter tank, the water is continuously conveyed, the water is sent into the water supply tank through the fourth connecting pipe for recycling, and the water passes through the backflush connecting pipe and the fourth connecting pipe to the first filter tank, the fiber filtered in the first filter tank is discharged after passing through the second connecting pipe, the first discharge pipe and the first discharge on-off valve, the situation that the filtering efficiency and the filtering effect are influenced due to the fact that too much fiber is filtered in the first filter tank is prevented, the idle first filter tank is cleaned and regenerated in the filtering process of the second filter tank, the fiber in the first filter tank is cleaned and recycled, after the fiber is discharged, the relative pressure difference value between the inlet end and the outlet end of the first filter tank is monitored and fed back to the plc controller in real time by the first pressure difference sensor, the pressure difference is recovered to the normal state at the moment, the plc controller transmits an electric signal to the first discharge on-off valve, the first discharge on-off valve is switched to the closed state, at the moment, all water is fed back to the water supply tank to prevent water resource waste, after the fiber at the position of the pulp pump is continuously washed and discharged in the reverse direction, the power consumption detection feedback module detects that the actual power consumption of the motor is recovered to the power consumption value in the normal operation and fed back to the plc controller, the plc controller drives the motor to reversely run for a preset time and then stop, then the plc controller respectively transmits an electric signal to the three-position four-way valve, the slurry outlet on-off valve, the first on-off valve and the second on-off valve to enable the three-position four-way valve to be switched to the second position, at the moment, the port A1 and the port A3 are cut off, the port A2 and the port A4 are cut off, the slurry outlet on-off valve is opened, one side of the first on-off valve and one side of the second on-off valve, which correspond to slurry pumping, are opened, the slurry pump normally runs to pump slurry, and slurry can be only sent into the double grinding discs through the slurry outlet pipe and the slurry outlet on-off valve due to the existence of the one-way valve after the slurry pump passes through the slurry pump.
The invention is further configured to: and one ends of the first discharge pipe and the second discharge pipe, which are far away from the second connecting pipe and the third connecting pipe, are connected with a sedimentation recovery tank.
Through adopting above-mentioned technical scheme, in order to carry out abundant recycle to the fibre that filters out to avoid direct outside emission fibre and water to cause the waste and the destruction environment of resource, keep away from the one end of second connecting pipe and third connecting pipe at first discharge tube and second discharge tube and be connected with the sediment recovery pond.
The invention also discloses a preparation method suitable for the glass partition paper preparation system, which is characterized by comprising the following steps:
1) crushing and pumping pulp: mixing primary softwood pulp and softwood chemi-mechanical pulp, pulping in a first pulping tank, independently pulping primary hardwood pulp in a second pulping tank, after pulping is finished, under the control of a plc controller, working of a pulp pump, opening of a first on-off valve, closing of a second on-off valve, feeding pulp in the first pulping tank into a double grinding disc through a first feeding pipe, a pulp feeding pipe and a pulp discharging pipe for pulping, after the pulp in the first pulping tank is guided out, transmitting an electric signal to the first on-off valve and the second on-off valve through the plc controller, closing of the first on-off valve, opening of the second on-off valve, and feeding pulp in the second pulping tank into the double grinding disc through a second feeding pipe, a pulp feeding pipe and a pulp discharging pipe for pulping;
2) and washing a filter box: when excessive fibers which are not fully pulped in the slurry pumped by the slurry pump are clamped at the slurry pump, and the slurry pump is partially or completely blocked, the load level of the motor will rise, the actual current consumption of the motor rises, the actual power consumption of the motor is detected by the energy consumption detection feedback module to rise and is fed back to the plc controller, and when the actual power consumption exceeds the upper limit power consumption value of the motor preset in the plc controller during normal operation, the plc controller transmits an electric signal to the slurry pump, so that the slurry pump stops operating and then pumps reversely;
3) and filtering out the fiber: the plc controller transmits electric signals to the three-position four-way valve, the slurry outlet on-off valve, the first on-off valve and the second on-off valve respectively, so that the slurry outlet on-off valve, the first on-off valve and the second on-off valve are switched to a closed state, the three-position four-way valve is switched to a normal state, at the moment, the ports A1 and A3 are communicated, the port A2 and the port A4 are cut off, water in the water supply tank is pumped to pass through a sixth connecting pipe and a one-way valve in a reverse pumping state of the slurry pump, the slurry pump is backflushed, fibers in the slurry pump are mixed and blocked, the fiber mixed water blocking the slurry pump passes through a first filter tank through a slurry inlet pipe, the fibers are filtered out in the first filter tank, the water is continuously conveyed and is sent into the water supply tank through the fourth connecting pipe for recycling;
4) and detecting a filter box: after the first filter tank filters fibers for a period of time, a first differential pressure sensor arranged on the first filter tank monitors and feeds back relative differential pressure values of an inlet end and an outlet end of the first filter tank to a plc controller in real time, when the fibers are excessive in the first filter tank, the relative differential pressure values of the inlet end and the outlet end of the first filter tank rise, so that after most of filter screens in the first filter tank are blocked, the relative differential pressure values of the inlet end and the outlet end rise to exceed a preset value on the plc controller;
5) switching and filtering: at the moment, the plc controller transmits an electric signal to the three-position four-way valve and the first discharge on-off valve, so that the first discharge on-off valve is opened, the three-position four-way valve is switched to the first position, at the moment, the port A3 and the port A1 are cut off, the port A2 and the port A4 are communicated, water in the water supply tank is pumped to pass through the sixth connecting pipe and the one-way valve, then the slurry pump is backflushed, fibers in the slurry pump are mixed and blocked, the fiber mixed water blocking the slurry pump passes through the second filter tank through the slurry inlet pipe, the first connecting pipe and the third connecting pipe, and the fibers are filtered out in the second filter tank;
6) fiber discharge: water is conveyed continuously, on one hand, the water is fed into the water supply tank through the fourth connecting pipe for recycling, on the other hand, the water backflushes the first filter tank through the backflushing connecting pipe and the fourth connecting pipe, so that the fibers filtered out from the first filter tank are discharged after passing through the second connecting pipe, the first discharge pipe and the first discharge on-off valve;
7) and stopping detection: the first differential pressure sensor monitors and feeds back the relative differential pressure value of the inlet end and the outlet end of the first filter tank to the plc controller in real time, at the moment, the differential pressure is restored to a normal state, the plc controller transmits an electric signal to the first discharge on-off valve, the first discharge on-off valve is switched to a closed state, and at the moment, all water is sent back to the water supply tank;
8) and resetting and slurry pumping: after the fibers at the slurry pump are flushed and discharged reversely and continuously, an energy consumption detection feedback module detects that the actual power consumption of the motor is recovered to the power consumption value during normal operation and feeds the power consumption value back to a plc controller, the plc controller drives the motor to operate reversely for a preset time and then stops, then the plc controller transmits electric signals to a three-position four-way valve, a slurry outlet on-off valve, a first on-off valve and a second on-off valve respectively to enable the three-position four-way valve to be switched to a second position, at the moment, a port A1 and a port A3 are stopped, a port A2 and a port A4 are stopped, the slurry outlet on-off valve is opened, one side of the first on-off valve and one side of the second on-off valve, which correspond to slurry pumping, are opened, and the slurry pump operates normally to pump the slurry to enable the slurry to be sent into a double grinding disc through a slurry outlet pipe and the slurry outlet on-off valve after passing through the slurry pump;
9) and continuously preparing: mixing the pulped pulp, storing the mixed pulp in a pulp blending tank, transferring the mixed pulp into a pre-acidification tank for pre-acidification for 20-30 minutes, adjusting the pH of the mixed pulp to 5.5-6.0, transferring the mixed pulp into a pulp forming tank, online diluting the pulp in the pulp forming tank by acidic white water in an external white water tank, acidifying the pulp to pH 5.0-5.5, removing slag by a four-section slag remover and a pressure screen, online adjusting the pH value of the pulp to 4.0-5.5, then distributing the pulp on a net by an air cushion type flow box, pre-dehydrating by a water scraping plate and a vacuum dehydrating device, further dehydrating by a squeezing part, pre-drying the dehydrated pulp by three drying cylinders, diluting a mildew preventive according to the concentration of 5-15%, acidifying the pulp to pH 4.5-5.5, pumping the pulp into a charging tank, surface coating by a film transfer glue applicator, drying after surface coating, calendaring, and press polishing, And (5) carrying out online detection by a paper defect detection system and coiling by a paper winder to obtain the finished product of the mould-proof antibacterial liquid crystal electronic glass partition paper.
By adopting the technical scheme, a proper amount of softwood chemi-mechanical pulp is added into raw materials of the product, and the softwood chemi-mechanical pulp has higher hardness, so that the air permeability of the glass spacing paper is favorably improved, the glass spacing paper can be endowed with higher stiffness, and the quality of the glass spacing paper is greatly improved; mixing native softwood pulp and softwood chemi-mechanical pulp, pulping in a first pulping tank, independently pulping native hardwood pulp in a second pulping tank, after pulping is completed, under the control of a plc controller, working of a pulp pump, sequentially introducing pulp in the first pulping tank and the second pulping tank into double grinding discs for pulping, reducing equipment requirements through pipelines, and simultaneously, when pulp pumping blockage occurs, only processing the independent pulp pump; the energy consumption detection feedback module detects that the actual power consumption of the motor is increased and feeds the actual power consumption back to the plc controller, when the actual power consumption exceeds an upper limit power consumption value of the plc controller when the motor normally runs, the plc controller transmits an electric signal to the slurry pump, the slurry pump stops running and then reversely pumps, fibers at the slurry pump are reversely pumped into the filter box to be filtered and removed, and the requirement of the slurry pump on normal running is met; a first differential pressure sensor arranged on the first filter tank monitors and feeds back a relative pressure difference value between an inlet end and an outlet end of the first filter tank to a plc controller in real time, when fibers are excessive in the first filter tank, the relative pressure difference value between the inlet end and the outlet end of the first filter tank rises to cause most of filter screens in the first filter tank to be blocked, the relative pressure difference value between the inlet end and the outlet end rises to exceed a preset value on the plc controller, at the moment, the plc controller transmits an electric signal to a three-position four-way valve and a first discharge on-off valve to open the first discharge on-off valve, so that the three-position four-way valve is switched to a first position, at the moment, a port A3 and a port A1 are cut off, a port A2 and a port A4 are communicated, after water in a water supply tank is pumped to pass through a sixth connecting pipe and a one-way valve, a slurry pump is backflushed to mix and block fibers in the slurry pump, and the fiber mixed water blocking the slurry pump passes through a second filter tank through a slurry inlet pipe, the first connecting pipe and a third connecting pipe, the fibers are filtered out in the second filter tank, the water is conveyed continuously, on one hand, the water is fed into the water supply tank through the fourth connecting pipe for recycling, on the other hand, the water backflushs the first filter tank through the backflushing connecting pipe and the fourth connecting pipe, so that the fibers filtered out in the first filter tank are discharged through the second connecting pipe, the first discharge pipe and the first discharge on-off valve, the filtering efficiency and the filtering effect are prevented from being influenced by excessive fibers filtered out in the first filter tank, the idle first filter tank is cleaned and regenerated in the filtering process of the second filter tank, and the idle second filter tank is cleaned and regenerated in the filtering process of the first filter tank and is recycled to ensure the fibers to be filtered out in time; after the fibers are discharged, the first differential pressure sensor monitors and feeds back the relative differential pressure value of the inlet end and the outlet end of the first filter tank to the plc controller in real time, at the moment, the differential pressure is recovered to a normal state, the plc controller transmits an electric signal to the first discharge on-off valve, the first discharge on-off valve is switched to a closed state, and at the moment, all water is sent back to the water supply tank to prevent the waste of water resources; after the fibers at the slurry pump are flushed and discharged continuously in the reverse direction, the energy consumption detection feedback module detects that the actual power consumption of the motor is recovered to the power consumption value during normal operation and feeds the power consumption value back to the plc controller, the plc controller drives the motor to operate in the reverse direction for a preset time and then stops, then the plc controller transmits electric signals to the three-position four-way valve, the slurry outlet on-off valve, the first on-off valve and the second on-off valve respectively to enable the three-position four-way valve to be switched to the second position, at the moment, the port A1 and the port A3 are stopped, the port A2 and the port A4 are stopped, the slurry outlet on-off valve is opened, one sides of the first on-off valve and the second on-off valve, corresponding slurry pumping is opened, the slurry pump operates normally to pump slurry, and the slurry can only be sent to the double grinding discs through the slurry outlet pipe and the slurry outlet on-off valve due to the existence of the one-way valve after the slurry pump passes through the slurry pump.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an embodiment 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.
As shown in figure 1, the invention discloses glass partition paper, which comprises partition paper pulp, wherein in the specific embodiment of the invention, the partition paper pulp comprises 50-70% of native softwood pulp, 10-30% of native hardwood pulp and 10-20% of softwood chemi-mechanical pulp in percentage by mass respectively; wherein the primary softwood pulp and the softwood chemi-mechanical pulp are mixed and pulped, and the pulping degree is 25-30 DEG SR; and independently pulping the primary hardwood pulp, wherein the pulping degree is 20-25 DEG SR.
By adopting the technical scheme, a proper amount of needle-leaved wood pulp is added into the raw materials of the glass spacing paper, and the needle-leaved wood pulp has higher hardness, so that the air permeability of the glass spacing paper is improved, the glass spacing paper is endowed with higher stiffness, the quality of the glass spacing paper is greatly improved, and the glass spacing paper with high stiffness, high mechanical strength and high air permeability is prepared.
The invention also discloses a preparation system suitable for the glass partition paper, which comprises a first pulping tank 1 for pulping original softwood pulp and softwood chemi-mechanical pulp, a second pulping tank 2 for pulping original hardwood pulp, a pulp pump 3, a double grinding disc 4 and a plc controller, in the concrete embodiment of the invention, the slurry pumping end of the slurry pumping pump 3 is connected with a slurry inlet pipe 5, the slurry outlet end of the slurry pumping pump 3 is connected with a slurry outlet pipe 6, the end of the pulp outlet pipe 6 far away from the pulp pumping pump 3 is connected with the feed inlet of the double-millstone 4, the end of the pulp inlet pipe 5 far away from the pulp pumping pump 3 is respectively connected with the bottoms of the first pulp crushing tank 1 and the second pulp crushing tank 2 through a first pulp inlet pipe 7 and a second pulp inlet pipe 8, the first inlet pipe 7 and the second inlet pipe 8 are respectively provided with a first on-off valve 9 and a second on-off valve 10, the pumping pump 3, the first on-off valve 9 and the second on-off valve 10 are electrically connected with the plc controller respectively.
By adopting the technical scheme, the raw softwood pulp and the softwood chemi-mechanical pulp are mixed and then are pulped in the first pulping pool 1, the raw hardwood pulp is independently pulped in the second pulping pool 2, after pulping is finished, the pulp pump 3 works under the control of the plc controller, the first on-off valve 9 is opened, the second on-off valve 10 is closed, the pulp in the first pulping pool 1 is led into the double grinding discs 4 through the first inlet pipe 7, the pulp inlet pipe 5 and the pulp outlet pipe 6 for pulping, after the pulp in the first pulping pool 1 is led out, the plc controller transmits an electric signal to the first on-off valve 9 and the second on-off valve 10 to close the first on-off valve 9, the second on-off valve 10 is opened to lead the pulp in the second pulping pool 2 into the double grinding discs 4 through the second inlet pipe 8, the pulp inlet pipe 5 and the pulp outlet pipe 6, and corresponding double grinding discs are required to be matched for pulping in each pulping pool in the prior art, the equipment requirement is reduced through the pipeline, simultaneously, the slurry pumping in first garrulous thick liquid pond 1 and the garrulous thick liquid pond 2 of second can be carried out to solitary slurry pumping pump 3, when appearing taking out the thick liquid and blockking up, only need to take out slurry pumping pump 3 solitary can, reduced corresponding maintenance equipment requirement, reduction in production cost.
In a specific embodiment of the present invention, the slurry pump 3 includes a motor controlled by a plc controller and used for driving the pump to pump forward or backward, the motor is provided with an energy consumption monitoring feedback module electrically connected to the plc controller and used for detecting actual energy consumption and feeding back the actual energy consumption to the plc controller, the slurry inlet pipe 5 and the slurry outlet pipe 6 are connected in parallel with a water supply filter assembly for supplying water to the motor for backward pumping and filtering out fibers blocked at the input end of the slurry pump 3, the plc controller transmits an electrical signal to the slurry pump 3 when the energy consumption monitoring feedback module is compared with an energy consumption preset value of the motor on the plc controller during normal operation and exceeds an upper limit power consumption value of the motor preset inside the plc controller during normal operation, so that the slurry pump is reversely pumped after stopping to clean and the fibers blocked at the input end of the slurry pump 3 are filtered out in the water supply filter assembly.
By adopting the technical scheme, in the process that the pulp pump 3 operates and works to pump the pulp in the first pulp crushing pool 1 and the second pulp crushing pool 2, the current consumed by the operation of the motor on the pulp pump 3 is in a normal state interval, the power consumption of the motor is detected by the energy consumption monitoring feedback module and fed back to the plc controller, the power consumption of the motor is in a normal state interval, when excessive fiber which is not fully crushed in the pulp pumped through the pulp pump 3 is clamped at the pulp pump 3 to cause partial or complete blockage at the pulp pump 3, the load level of the motor is increased to cause the actual current consumption of the motor to be increased, the actual power consumption of the motor is detected by the energy consumption monitoring feedback module to be increased and fed back to the plc controller, when the actual power consumption exceeds the upper limit power consumption value of the motor preset in the plc controller during normal operation, the plc controller transmits an electric signal to the pulp pump 3 to enable the pulp pump 3 to reversely pump after the operation is stopped, the water supply filter assembly supplies water to the pumping pump 3, so that mixed water of fibers blocked or partially blocked at the input end of the pumping pump 3 is fed into the water supply filter assembly for filtering in a reverse rotation state of the motor, the actual power consumption of the motor is detected by the energy consumption detection feedback module to be recovered to a power consumption value in normal operation and fed back to the plc controller, the plc controller drives the motor to reversely operate for a preset time and then stops, and then the normal operation forward pumping of slurry is performed.
In the embodiment of the invention, the water supply filtering assembly comprises a water supply tank 11, a first filtering tank 12, a second filtering tank 13 and a three-position four-way valve 14, wherein the three-position four-way valve 14 is provided with a left electromagnetic coil and a right electromagnetic coil, a valve core is positioned at a middle position by a left spring and a right spring in a normal state, and is driven by the left electromagnetic coil or the right electromagnetic coil to be biased to a first position or a second position; the normal state is a middle position, the ports A1 and A3 are communicated, and the ports A2 and A4 are cut off; in the first position, port A3 and port a1 are closed and port a2 and port a4 are in communication; in the second position, port a1 and port A3 are blocked, port a2 and port a4 are blocked; the port A1 and the port A2 are connected with the slurry inlet pipe 5 through a first connecting pipe 15, the port A3 is connected with the inlet end of the first filter tank 12 through a second connecting pipe 16, the port A4 is connected with the inlet end of the second filter tank 13 through a third connecting pipe 17, the outlet end of the first filter tank 12 is connected with the water supply tank 11 through a fourth connecting pipe 18, the outlet end of the second filter tank 13 is connected with the water supply tank 11 through a fifth connecting pipe 19, the water supply tank 11 is connected with the slurry outlet pipe 6 through a sixth connecting pipe 20, the sixth connecting pipe 20 is provided with a one-way valve 21 for conducting water in the water supply tank 11 to the slurry outlet pipe 6 in a one-way manner, one end of the slurry outlet pipe 6 close to the double grinding disc 4 is provided with a slurry outlet on-off valve 22, and the plc controller is respectively electrically connected with a three-position four-way valve 14 and the slurry outlet on-off valve 22.
By adopting the technical scheme, in the process that the pulp pump 3 operates to pump pulp in the first pulp crushing pool 1 and the second pulp crushing pool 2, when excessive and insufficient pulp fibers in the pulp pumped through the pulp pump 3 are clamped at the pulp pump 3 to cause partial or complete blockage at the pulp pump 3, the load level of the motor will rise, the actual current consumption of the motor rises, the actual power consumption of the motor is detected by the energy consumption detection feedback module to rise and is fed back to the plc controller, when the actual power consumption exceeds the upper limit power consumption value of the normal operation of the motor preset in the plc controller, the plc controller transmits an electric signal to the pulp pump 3 to stop the pulp pump 3 and then reversely pump the pulp, and simultaneously, the plc controller transmits the electric signal to the three-position four-way valve 14, the pulp on-off valve 22, the first on-off valve 9 and the second on-off valve 10 respectively to enable the pulp on-off valve 22 and the pulp on-off valve 10, The first on-off valve 9 and the second on-off valve 10 are switched to a closed state, the three-position four-way valve 14 is switched to a normal state, at this time, the port A1 and the port A3 are communicated, the port A2 and the port A4 are cut off, in a reverse pumping state of the slurry pump 3, after water in the water supply tank 11 is pumped through the sixth connecting pipe 20 and the one-way valve 21, the slurry pump 3 is backflushed, fibers in the blocked slurry pump 3 are mixed, the fiber mixed water blocked in the slurry pump 3 is passed through the first filter tank 12 through the slurry inlet pipe 5, the first connecting pipe 15 and the second connecting pipe 16, the fibers are filtered out in the first filter tank 12, the water is continuously conveyed and is fed into the water supply tank 11 through the fourth connecting pipe 18 for recycling, after the fibers are filtered out by the first filter tank 12 for a period of time, in order to prevent the fibers filtered out in the first filter tank 12 from being too much to affect the efficiency, the filtered out electric signal is transmitted to the three-position four-way valve 14 by the plc controller, switching the three-position four-way valve 14 to the first position, wherein the port A3 and the port A1 are cut off, the port A2 and the port A4 are communicated, after water in the water supply tank 11 is pumped and passes through the sixth connecting pipe 20 and the one-way valve 21, back flushing the slurry pump 3, mixing fibers in the blocked slurry pump 3, and passing the fiber mixed water blocked in the slurry pump 3 through the slurry inlet pipe 5, the first connecting pipe 15 and the third connecting pipe 17 through the second filter tank 13, the fibers are filtered out in the second filter tank 13, the water is continuously conveyed and sent into the water supply tank 11 through the fifth connecting pipe 19 for recycling, and during the filtering process of the second filter tank 13, the idle first filter tank 12 is manually cleaned and regenerated, the fibers in the first filter tank 12 are cleaned out, the fibers are recycled and filtered out, and the fibers at the slurry pump 3 are continuously washed and discharged in reverse direction, the detection feedback module detects that the actual power consumption of the motor is recovered to the normal operation value and feeds back to the plc controller, the plc controller drives the motor to reversely run for a preset time and then stop, and then the plc controller transmits electric signals to the three-position four-way valve 14, the slurry outlet on-off valve 22, the first on-off valve 9 and the second on-off valve 10 respectively to switch the three-position four-way valve 14 to the second position, at this time, the port A1 and the port A3 are cut off, the port A2 and the port A4 are cut off, the slurry outlet on-off valve 22 is opened, the corresponding slurry pumping sides of the first on-off valve 9 and the second on-off valve 10 are opened, the slurry pump 3 normally runs to pump slurry, and slurry is only sent into the double grinding disc 4 through the slurry outlet pipe 6 and the slurry outlet on-off valve 22 due to the existence of the one-way valve 21 after passing through the slurry pump 3.
In the embodiment of the present invention, the first filter tank 12 and the second filter tank 13 are respectively provided with a first differential pressure sensor 23 and a second differential pressure sensor 24 which are electrically connected with the plc controller and are used for detecting the relative differential pressure at the inlet end and the outlet end of the first filter tank 12 and the second filter tank 13 in real time and transmitting the relative differential pressure to the plc controller, the fourth connecting pipe 18 and the fifth connecting pipe 19 are communicated with each other through a recoil connecting pipe 25, the second connecting pipe 16 and the third connecting pipe 17 are respectively connected with a first discharge pipe 26 and a second discharge pipe 27, the first discharge pipe 26 and the second discharge pipe 27 are respectively provided with a first discharge on-off valve 28 and a second discharge on-off valve 29, when the relative differential pressure at the inlet end and the outlet end of the first differential pressure sensor 23 or the second differential pressure sensor 24 exceeds a predetermined value on the plc controller, the corresponding first discharge on-off valve 28 or the second discharge on-off valve 29 of the control switch is opened to allow the water filtered by the first filtering tank 12 to backflush the second filtering tank 13 through the backflushing connecting pipe 25 to discharge the fibers in the second filtering tank 13 or allow the water filtered by the second filtering tank 13 to backflush the first filtering tank 12 through the backflushing connecting pipe 25 to discharge the fibers in the first filtering tank 12, and the plc controller is electrically connected with the first discharge on-off valve 28 and the second discharge on-off valve 29 respectively.
By adopting the technical scheme, in the process that the pulp pump 3 operates to pump pulp in the first pulp crushing pool 1 and the second pulp crushing pool 2, when excessive and insufficient pulp fibers in the pulp pumped through the pulp pump 3 are clamped at the pulp pump 3 to cause partial or complete blockage at the pulp pump 3, the load level of the motor will rise, the actual current consumption of the motor rises, the actual power consumption of the motor is detected by the energy consumption detection feedback module to rise and is fed back to the plc controller, when the actual power consumption exceeds the upper limit power consumption value of the normal operation of the motor preset in the plc controller, the plc controller transmits an electric signal to the pulp pump 3 to stop the pulp pump 3 and then reversely pump the pulp, and simultaneously, the plc controller transmits the electric signal to the three-position four-way valve 14, the pulp on-off valve 22, the first on-off valve 9 and the second on-off valve 10 respectively to enable the pulp on-off valve 22 and the pulp on-off valve 10, The first on-off valve 9 and the second on-off valve 10 are switched to a closed state, the three-position four-way valve 14 is switched to a normal state, at this time, the port A1 and the port A3 are communicated, the port A2 and the port A4 are cut off, in a reverse pumping state of the slurry pump 3, after water in the water supply tank 11 is pumped through the sixth connecting pipe 20 and the one-way valve 21, the slurry pump 3 is backflushed, fibers in the blocked slurry pump 3 are mixed, the fiber mixed water blocked in the slurry pump 3 is passed through the first filter tank 12 through the slurry inlet pipe 5, the first connecting pipe 15 and the second connecting pipe 16, the fibers are filtered out in the first filter tank 12, the water is continuously conveyed and is sent into the water supply tank 11 through the fourth connecting pipe 18 for circulation, after the fibers are filtered by the first filter tank 12 for a period of time, at this time, if the first differential pressure sensor 23 arranged on the first filter tank 12 monitors and feeds back the relative pressure difference value of the inlet end and the outlet end of the first filter tank 12 to the plc controller in real time, when the relative pressure difference value between the inlet end and the outlet end of the first filter tank 12 rises when the amount of the fibers in the first filter tank 12 is too large, causing the filter mesh in the first filter tank 12 to be mostly blocked, and the relative pressure difference value between the inlet end and the outlet end to rise above the predetermined value on the plc controller, at this time, the plc controller transmits an electric signal to the three-position four-way valve 14 and the first discharge on-off valve 28, causing the first discharge on-off valve 28 to open, causing the three-position four-way valve 14 to switch to the first position, at this time, the port A3 and the port a1 are closed, the port a2 and the port a4 are communicated, after water inside the water supply tank 11 is drawn through the sixth connection pipe 20 and the check valve 21, the pump 3 is backflushed, the fibers in the blocked pump 3 are mixed, the fiber mixed water of the pump 3 is passed through the second filter tank 13 through the slurry inlet pipe 5, the first connection pipe 15 and the third connection pipe 17, and the fibers are filtered out in the second filter tank 13, the water is continuously conveyed, on one hand, the water is conveyed into the water supply tank 11 through the fourth connecting pipe 18 for recycling, on the other hand, the water backflushs the first filter tank 12 through the backflushing connecting pipe 25 and the fourth connecting pipe 18, so that the fibers filtered out in the first filter tank 12 are discharged after passing through the second connecting pipe 16, the first discharge pipe 26 and the first discharge on-off valve 28, the filtering efficiency and the filtering effect are prevented from being influenced by excessive fibers filtered out in the first filter tank 12, in the filtering process of the second filter tank 13, the idle first filter tank 12 is cleaned and regenerated, the fibers in the first filter tank 12 are cleaned and washed out for recycling the filtered fibers, after the fibers are discharged, the first pressure difference sensor 23 monitors and feeds back the relative pressure difference value between the inlet end and the outlet end of the first filter tank 12 to the plc controller in real time, at the moment, the pressure difference is recovered to a normal state, and the plc controller transmits an electric signal to the first discharge on-off valve 28, the first discharge on-off valve 28 is switched to a closed state, at the moment, all water is sent back to the water supply tank 11 to prevent water resource waste, after the fibers at the slurry pump 3 are washed and discharged continuously in a reverse direction, the energy consumption detection feedback module detects that the actual power consumption of the motor is recovered to the power consumption value in normal operation and feeds the power consumption value back to the plc controller, the plc controller drives the motor to operate in the reverse direction for a preset time and then stops, then the plc controller transmits electric signals to the three-position four-way valve 14, the slurry outlet on-off valve 22, the first on-off valve 9 and the second on-off valve 10 respectively to enable the three-position four-way valve 14 to be switched to the second position, at the moment, the port A1 and the port A3 are cut off, the port A2 and the port A4 are cut off, the slurry outlet on-off valve 22 is opened, the first on-off valve 9 and the second on-off valve 10 are opened on the corresponding slurry pumping side, the slurry pump 3 operates normally, and slurry is pumped into the slurry pump 3 due to the existence of the one-way valve 21, so that the slurry can only pass through the slurry outlet pipe 6 and the slurry outlet on-off valve 22 In the disc 4.
In the embodiment of the present invention, a sedimentation recovery tank 30 is connected to one ends of the first and second discharge pipes 26 and 27, which are far from the second and third connection pipes 16 and 17.
Through adopting above-mentioned technical scheme, in order to carry out abundant recycle to the fibre that filters out to avoid direct outside discharge fibre and water to cause the waste of resource and destruction of environment, be connected with precipitation recovery pond 30 in the one end that second connecting pipe 16 and third connecting pipe 17 are kept away from to first discharge pipe 26 and second discharge pipe 27.
The invention also discloses a preparation method suitable for the glass partition paper preparation system, which comprises the following steps in the specific embodiment of the invention:
1) crushing and pumping pulp: mixing raw softwood pulp and softwood chemi-mechanical pulp, pulping in a first pulping tank 1, independently pulping raw hardwood pulp in a second pulping tank 2, after pulping is completed, under the control of a plc controller, a pulp pumping pump 3 works, a first on-off valve 9 is opened, a second on-off valve 10 is closed, pulp in the first pulping tank 1 is led into a double grinding disc 4 through a first pulp inlet pipe 7, a pulp inlet pipe 5 and a pulp outlet pipe 6 to be pulped, after the pulp in the first pulping tank 1 is led out, the plc controller transmits an electric signal to the first on-off valve 9 and the second on-off valve 10 to close the first on-off valve 9, open the second on-off valve 10, and lead pulp in the second pulping tank 2 into the double grinding disc 4 through a second pulp inlet pipe 8, a pulp inlet pipe 5 and a pulp outlet pipe 6 to be pulped;
2) and washing a filter box: when excessive and insufficient fiber which is crushed in the slurry pumped through the slurry pump 3 is clamped at the slurry pump 3, and the slurry pump 3 is partially or completely blocked, the load level of the motor will rise, the actual current consumption of the motor rises, the actual power consumption of the motor is detected by the energy consumption detection feedback module to rise and is fed back to the plc controller, and when the actual power consumption exceeds the upper limit power consumption value of the motor preset in the plc controller during normal operation, the plc controller transmits an electric signal to the slurry pump 3, so that the slurry pump 3 stops operating and then pumps reversely;
3) and filtering out the fiber: the plc controller transmits electric signals to the three-position four-way valve 14, the slurry outlet on-off valve 22, the first on-off valve 9 and the second on-off valve 10 respectively, so that the slurry outlet on-off valve 22, the first on-off valve 9 and the second on-off valve 10 are switched to a closed state, the three-position four-way valve 14 is switched to a normal state, at the moment, the port A1 is communicated with the port A3, the port A2 is closed off from the port A4, in a reverse pumping state of the slurry pump 3, water in the water supply tank 11 is pumped to pass through the sixth connecting pipe 20 and the one-way valve 21, the slurry pump 3 is backflushed, fibers in the blocked slurry pump 3 are mixed, fiber mixed water blocking the slurry pump 3 passes through the first filter tank 12 through the slurry inlet pipe 5, the first connecting pipe 15 and the second connecting pipe 16, the fibers are filtered out from the first filter tank 12, the water is continuously conveyed and is sent into the water supply tank 11 through the fourth;
4) and detecting a filter box: after the first filter tank 12 is maintained for a period of time to filter out the fibers, the first differential pressure sensor 23 arranged on the first filter tank 12 monitors and feeds back the relative pressure difference value of the inlet end and the outlet end of the first filter tank 12 to the plc controller in real time, when the fibers are excessive in the first filter tank 12, the relative pressure difference value of the inlet end and the outlet end of the first filter tank 12 rises, so that after most of the filter screens in the first filter tank 12 are blocked, the relative pressure difference value of the inlet end and the outlet end rises to exceed the preset value on the plc controller;
5) switching and filtering: at this time, the plc controller transmits an electrical signal to the three-position four-way valve 14 and the first discharge on-off valve 28, so that the first discharge on-off valve 28 is opened, so that the three-position four-way valve 14 is switched to the first position, at this time, the port A3 and the port a1 are cut off, the port a2 and the port a4 are communicated, water in the water supply tank 11 is pumped to pass through the sixth connecting pipe 20 and the check valve 21, the slurry pump 3 is backflushed, fibers in the blocked slurry pump 3 are mixed, the fiber mixed water blocked in the slurry pump 3 passes through the second filter tank 13 through the slurry inlet pipe 5, the first connecting pipe 15 and the third connecting pipe 17, and the fibers are filtered out in the second filter tank 13;
6) fiber discharge: water is continuously conveyed, on one hand, the water is sent into the water supply tank 11 through the fourth connecting pipe 18 for recycling, on the other hand, the water backflushs the first filter tank 12 through the backflushing connecting pipe 25 and the fourth connecting pipe 18, so that the fibers filtered out in the first filter tank 12 are discharged after passing through the second connecting pipe 16, the first discharge pipe 26 and the first discharge on-off valve 28;
7) and stopping detection: the first differential pressure sensor 23 monitors and feeds back the relative pressure difference value of the inlet end and the outlet end of the first filter tank 12 to the plc controller in real time, at the moment, the differential pressure is recovered to a normal state, the plc controller transmits an electric signal to the first discharge on-off valve 28, the first discharge on-off valve 28 is switched to a closed state, and at the moment, all water is sent back to the water supply tank 11;
8) and resetting and slurry pumping: after the fibers at the slurry pump 3 are continuously washed and discharged in the reverse direction, the energy consumption detection feedback module detects that the actual power consumption of the motor is recovered to the power consumption value in the normal operation and feeds the power consumption value back to the plc controller, the plc controller drives the motor to operate in the reverse direction for a preset time and then stops, then the plc controller transmits electric signals to the three-position four-way valve 14, the slurry outlet on-off valve 22, the first on-off valve 9 and the second on-off valve 10 respectively to enable the three-position four-way valve 14 to be switched to the second position, at the moment, the port A1 and the port A3 are stopped, the port A2 and the port A4 are stopped, the slurry outlet on-off valve 22 is opened, one side of the first on-off valve 9 and the second on-off valve 10, corresponding to slurry pumping is opened, the slurry pump 3 operates normally to pump slurry, and the slurry is sent to the double grinding disc 4 through the slurry outlet pipe 6 and the slurry outlet on-off valve 22 after passing through the slurry pump 3;
9. and (3) continuously preparing: mixing the pulped pulp, storing the mixed pulp in a pulp blending tank, transferring the mixed pulp into a pre-acidification tank for pre-acidification for 20-30 minutes, adjusting the pH of the mixed pulp to 5.5-6.0, transferring the mixed pulp into a pulp forming tank, online diluting the pulp in the pulp forming tank by acidic white water in an external white water tank, acidifying the pulp to pH 5.0-5.5, removing slag by a four-section slag remover and a pressure screen, online adjusting the pH value of the pulp to 4.0-5.5, then distributing the pulp on a net by an air cushion type flow box, pre-dehydrating by a water scraping plate and a vacuum dehydrating device, further dehydrating by a squeezing part, pre-drying the dehydrated pulp by three drying cylinders, diluting a mildew preventive according to the concentration of 5-15%, acidifying the pulp to pH 4.5-5.5, pumping the pulp into a charging tank, surface coating by a film transfer glue applicator, drying after surface coating, calendaring, and press polishing, And (5) carrying out online detection by a paper defect detection system and coiling by a paper winder to obtain the finished product of the mould-proof antibacterial liquid crystal electronic glass partition paper.
By adopting the technical scheme, a proper amount of softwood chemi-mechanical pulp is added into raw materials of the product, and the softwood chemi-mechanical pulp has higher hardness, so that the air permeability of the glass spacing paper is favorably improved, the glass spacing paper can be endowed with higher stiffness, and the quality of the glass spacing paper is greatly improved; mixing native softwood pulp and softwood chemi-mechanical pulp, pulping in a first pulping tank 1, independently pulping native hardwood pulp in a second pulping tank 2, after pulping is completed, under the control of a plc controller, working a pulp pumping pump 3, sequentially introducing the pulp in the first pulping tank 1 and the second pulping tank 2 into a double grinding disc 4 for pulping, reducing equipment requirements through a pipeline, and simultaneously, only processing the independent pulp pumping pump 3 when pulp pumping blockage occurs; the energy consumption detection feedback module detects that the actual power consumption of the motor rises and feeds the actual power consumption back to the plc controller, when the actual power consumption exceeds an upper limit power consumption value of the plc controller when the motor normally runs, the plc controller transmits an electric signal to the slurry pump 3, the slurry pump 3 stops running and then reversely pumps, fibers at the slurry pump 3 are reversely pumped into the filter box to be filtered and removed, and the requirement of the normal running of the slurry pump 3 is met; a first differential pressure sensor 23 arranged on the first filter tank 12 monitors and feeds back the relative pressure difference value of the inlet end and the outlet end of the first filter tank 12 to a plc controller in real time, when the fiber is excessive in the first filter tank 12, the relative pressure difference value of the inlet end and the outlet end of the first filter tank 12 rises to cause most of the filter screen in the first filter tank 12 to be blocked, the relative pressure difference value of the inlet end and the outlet end rises to exceed the preset value on the plc controller, at this time, the plc controller transmits an electric signal to the three-position four-way valve 14 and the first discharge on-off valve 28 to open the first discharge on-off valve 28, the three-position four-way valve 14 is switched to the first position, at this time, the port A3 and the port a1 are cut off, the port a2 and the port a4 are communicated, after the water in the water supply tank 11 is pumped through the sixth connecting pipe 20 and the check valve 21, the slurry pump 3 is backflushed, the fiber in the blocked slurry pump 3 is mixed, the fiber mixed water blocking the slurry pump 3 passes through the second filter tank 13 through the slurry inlet pipe 5, the first connecting pipe 15 and the third connecting pipe 17, the fibers are filtered out in the second filter tank 13, the water is continuously conveyed, on one hand, the water is conveyed into the water supply tank 11 through the fourth connecting pipe 18 for recycling, on the other hand, the water backflushes the first filter tank 12 through the backflushing connecting pipe 25 and the fourth connecting pipe 18, so that the fibers filtered out from the first filter tank 12 are discharged through the second connecting pipe 16, the first discharge pipe 26 and the first discharge on-off valve 28, the excessive fibers filtered out from the first filter tank 12 are prevented from influencing the filtering efficiency and the filtering effect, in the filtering process of the second filter tank 13, the idle first filtering box 12 is cleaned and regenerated, and in the filtering process of the first filtering box 12, the idle second filter box 13 is cleaned and regenerated and is used in a circulating and matching way, so that the fibers are filtered out in time; after the fiber is discharged, the first differential pressure sensor 23 monitors and feeds back the relative pressure difference value between the inlet end and the outlet end of the first filter tank 12 to the plc controller in real time, at the moment, the differential pressure is recovered to a normal state, the plc controller transmits an electric signal to the first discharge on-off valve 28, the first discharge on-off valve 28 is switched to a closed state, and at the moment, all water is sent back to the water supply tank 11 to prevent the waste of water resources; after the fibers at the slurry pump 3 are continuously flushed in the reverse direction and discharged, the energy consumption detection feedback module detects that the actual power consumption of the motor is recovered to the power consumption value during normal operation and feeds the power consumption value back to the plc controller, the plc controller drives the motor to operate in the reverse direction for a preset time and then stops, then the plc controller transmits electric signals to the three-position four-way valve 14, the slurry outlet on-off valve 22, the first on-off valve 9 and the second on-off valve 10 respectively to enable the three-position four-way valve 14 to be switched to the second position, at the moment, the port A1 and the port A3 are stopped, the port A2 and the port A4 are stopped, the slurry outlet on-off valve 22 is opened, the corresponding slurry pumping sides of the first on-off valve 9 and the second on-off valve 10 are opened, the slurry pump 3 operates normally to pump slurry, and the slurry is only sent to the double grinding disc 4 through the slurry outlet pipe 6 and the slurry outlet on-off valve 22 due to the existence of the one-way valve 21 after the slurry pump 3.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (4)

1. A preparation system of glass spacer paper comprises spacer paper pulp and is characterized in that: the space paper pulp comprises 50-70% of native softwood pulp, 10-30% of native hardwood pulp and 10-20% of softwood chemi-mechanical pulp in percentage by mass; wherein the primary softwood pulp and the softwood chemi-mechanical pulp are mixed and pulped, and the pulping degree is 25-30 DEG SR; native hardwood pulp is beaten alone, and the beating degree is 20 ~ 25 SR, still including the first broken thick liquid pond (1) that is used for supplying the native softwood pulp of shredded pulp and softwood chemi-mechanical pulp, the second broken thick liquid pond (2) that supplies the native hardwood pulp of shredded pulp, pulp pump (3), two mill (4), plc controller, its characterized in that: slurry pump (3) pump slurry end is connected with into thick liquid pipe (5), pump slurry (3) play thick liquid end is connected with out thick liquid pipe (6), the one end that pump slurry (3) were kept away from in play thick liquid pipe (6) is connected with two mill (4) feed inlets, the one end that pump slurry (3) were kept away from in advance thick liquid pipe (5) advances pipe (8) and is connected with first garrulous thick liquid pond (1) and second garrulous thick liquid pond (2) bottom through first advancing pipe (7) and second respectively, first advancing pipe (7) and second advance and be provided with first on-off valve (9) and second on pipe (8) respectively and be connected with plc controller electricity, pump slurry pump (3) include by plc controller control be used for driving its forward or reverse pumping motor, be provided with on the motor and be connected with plc controller electricity and be used for detecting its actual feedback controller and monitor the feedback to plc module mould that is connected with plc controller electricity A water supply filtering component which is used for supplying water to a motor for reverse pumping and filtering the blocking fiber at the input end of the slurry pump (3) is connected on the slurry inlet pipe (5) and the slurry outlet pipe (6) in parallel, the plc controller is compared with an energy consumption preset value when the motor normally runs on the plc controller based on the energy consumption monitoring feedback module, when the energy consumption preset value exceeds the motor normal running upper limit power consumption value preset in the plc controller, an electric signal is transmitted to the slurry pump (3), the slurry pump is reversely pumped for cleaning after stopping the slurry pump, and the blocked fibers at the input end of the slurry pump (3) are filtered in the water supply filtering component, the water supply filtering component comprises a water supply tank (11), a first filtering tank (12), a second filtering tank (13) and a three-position four-way valve (14), the three-position four-way valve (14) is provided with a left electromagnetic coil and a right electromagnetic coil, a valve core is positioned at the middle position by a left spring and a right spring in a normal state, and is driven by the left electromagnetic coil or the right electromagnetic coil to deflect to a first position or a second position; the normal state is a middle position, the ports A1 and A3 are communicated, and the ports A2 and A4 are cut off; in the first position, port A3 and port a1 are closed and port a2 and port a4 are in communication; in the second position, port a1 and port A3 are blocked, port a2 and port a4 are blocked; the port A1 and the port A2 are connected with the pulp inlet pipe (5) through a first connecting pipe (15), the port A3 is connected with the inlet end of the first filter tank (12) through a second connecting pipe (16), the port A4 is connected with the inlet end of the second filter tank (13) through a third connecting pipe (17), the outlet end of the first filter tank (12) is connected with the water supply tank (11) through a fourth connecting pipe (18), the outlet end of the second filter tank (13) is connected with the water supply tank (11) through a fifth connecting pipe (19), the water supply tank (11) is connected with the pulp outlet pipe (6) through a sixth connecting pipe (20), a one-way valve (21) for conducting water in the water supply tank (11) to the pulp outlet pipe (6) in a one-way manner is arranged on the sixth connecting pipe (20), and a pulp outlet valve (22) is arranged at one end of the pulp outlet pipe (6) close to the double grinding discs (4), and the plc controller is respectively and electrically connected with the three-position four-way valve (14) and the slurry outlet on-off valve (22).
2. The system for preparing glass spacer paper according to claim 1, wherein: be provided with respectively on first rose box (12), the second rose box (13) and be connected with the plc controller electricity and be used for real-time detection first rose box (12), second rose box (13) entering end and exit end relative differential pressure and transmit first differential pressure sensor (23) and second differential pressure sensor (24) to the plc controller, communicate each other through recoil connecting pipe (25) between fourth connecting pipe (18) and fifth connecting pipe (19), be connected with first discharge pipe (26) and second discharge pipe (27) on second connecting pipe (16) and third connecting pipe (17) respectively, be provided with first discharge on-off valve (28) and second discharge on-off valve (29) on first discharge pipe (26) and second discharge pipe (27) respectively, first discharge on-off valve (28) and second discharge on-off valve (29) exceed the plc controller on based on first differential pressure sensor (23) or second differential pressure sensor (24) entry end and the relative differential pressure value of exit end and exit end When the water quality is preset, a first discharge on-off valve (28) or a second discharge on-off valve (29) corresponding to a control switch is opened, so that water filtered by a first filter tank (12) backflushs the second filter tank (13) through a backflushing connecting pipe (25) to discharge fibers in the second filter tank (13) or water filtered by the second filter tank (13) backflushs the first filter tank (12) through the backflushing connecting pipe (25) to discharge fibers in the first filter tank (12), and a plc controller is electrically connected with the first discharge on-off valve (28) and the second discharge on-off valve (29) respectively.
3. The system for preparing glass spacer paper according to claim 2, wherein: and one ends of the first discharge pipe (26) and the second discharge pipe (27) far away from the second connecting pipe (16) and the third connecting pipe (17) are connected with a sedimentation recovery tank (30).
4. A method of making a glassine paper making system according to claim 3, comprising the steps of:
1) crushing and pumping pulp: mixing the primary softwood pulp and the softwood chemi-mechanical pulp, pulping in a first pulping tank (1), independently pulping the primary hardwood pulp in a second pulping tank (2), after pulping is finished, under the control of a plc controller, a pulp pumping pump (3) works, a first on-off valve (9) is opened, a second on-off valve (10) is closed, pulp in a first pulp crushing tank (1) is introduced into a double grinding disc (4) through a first pulp inlet pipe (7), a pulp inlet pipe (5) and a pulp outlet pipe (6) for pulping, and after the pulp in the first pulp crushing tank (1) is guided out, the plc controller transmits an electric signal to the first on-off valve (9) and the second on-off valve (10), so that the first on-off valve (9) is closed, the second on-off valve (10) is opened, and the pulp in the second pulp crushing tank (2) is introduced into the double grinding discs (4) through the second pulp inlet pipe (8), the pulp inlet pipe (5) and the pulp outlet pipe (6) for pulping;
2) and washing a filter box: when excessive fibers which are not fully crushed in the slurry pumped by the slurry pump (3) are clamped at the slurry pump (3) to cause partial or complete blockage at the slurry pump (3), the load level of the motor will rise, the actual current consumption of the motor rises, the actual power consumption of the motor is detected by the energy consumption detection feedback module to rise and is fed back to the plc controller, and when the actual power consumption exceeds the upper limit power consumption value of the motor preset in the plc controller during normal operation, the plc controller transmits an electric signal to the slurry pump (3), so that the slurry pump (3) performs reverse pumping after stopping operation;
3) and filtering out the fiber: the plc controller transmits electric signals to the three-position four-way valve (14), the slurry outlet on-off valve (22), the first on-off valve (9) and the second on-off valve (10) respectively, so that the slurry outlet on-off valve (22), the first on-off valve (9) and the second on-off valve (10) are switched to a closed state, the three-position four-way valve (14) is switched to a normal state, at the moment, the port A1 and the port A3 are communicated, the port A2 and the port A4 are cut off, in a reverse pumping state of the slurry pump (3), after water in the water supply tank (11) is pumped to pass through the sixth connecting pipe (20) and the one-way valve (21), the slurry pump (3) is backflushed, fibers in the slurry pump (3) are mixed and blocked, the fiber mixed water blocked by the slurry pump (3) passes through the first filter tank (12) through the slurry inlet pipe (5), the first connecting pipe (15) and the second connecting pipe (16), and the fibers are filtered out in the first filter tank (12), the water is continuously conveyed and is sent into the water supply tank (11) through a fourth connecting pipe (18) for recycling;
4) and detecting a filter box: after the first filter tank (12) is maintained for a period of time to filter fibers, a first differential pressure sensor (23) arranged on the first filter tank (12) monitors and feeds back the relative pressure difference value of the inlet end and the outlet end of the first filter tank (12) to a plc controller in real time, when the fibers are excessive in the first filter tank (12), the relative pressure difference value of the inlet end and the outlet end of the first filter tank (12) rises, so that the relative pressure difference value of the inlet end and the outlet end exceeds a preset value on the plc controller after most of filter screens in the first filter tank (12) are blocked;
5) switching and filtering: at the moment, the plc controller transmits an electric signal to the three-position four-way valve (14) and the first discharge on-off valve (28), so that the first discharge on-off valve (28) is opened, the three-position four-way valve (14) is switched to the first position, at the moment, the port A3 and the port A1 are cut off, the port A2 and the port A4 are communicated, water in the water supply tank (11) is pumped to pass through the sixth connecting pipe (20) and the one-way valve (21), the slurry pump (3) is backflushed, fibers in the blocked slurry pump (3) are mixed, the fiber mixed water blocking the slurry pump (3) passes through the second filter tank (13) through the slurry inlet pipe (5), the first connecting pipe (15) and the third connecting pipe (17), and the fibers are filtered out in the second filter tank (13);
6) fiber discharge: water is conveyed continuously, on one hand, the water is sent into the water supply tank (11) through the fourth connecting pipe (18) for recycling, on the other hand, the water backflushs the first filter tank (12) through the backflushing connecting pipe (25) and the fourth connecting pipe (18), so that the fibers filtered out in the first filter tank (12) are discharged after passing through the second connecting pipe (16), the first discharge pipe (26) and the first discharge on-off valve (28);
7) and stopping detection: the first differential pressure sensor (23) monitors and feeds back the relative pressure difference value between the inlet end and the outlet end of the first filter tank (12) to the plc controller in real time, at the moment, the differential pressure is recovered to a normal state, the plc controller transmits an electric signal to the first discharge on-off valve (28), the first discharge on-off valve (28) is switched to a closed state, and at the moment, all water is sent back to the water supply tank (11);
8) and resetting and slurry pumping: after the fibers at the slurry pump (3) are reversely and continuously washed and discharged, the energy consumption detection feedback module detects that the actual power consumption of the motor is recovered to the power consumption value in normal operation and feeds the power consumption value back to the plc controller, the plc controller drives the motor to reversely operate for a preset time and then stops, then the plc controller respectively transmits electric signals to the three-position four-way valve (14) and the slurry outlet on-off valve (22), a first on-off valve (9) and a second on-off valve (10) enable the three-position four-way valve (14) to be switched to a second position, at the moment, a port A1 and a port A3 are cut off, a port A2 and a port A4 are cut off, a slurry outlet on-off valve (22) is opened, one side of the first on-off valve (9) and one side of the second on-off valve (10) which are used for correspondingly pumping slurry are opened, a slurry pump (3) operates normally to pump slurry, and the slurry is sent into a double grinding disc (4) through a slurry outlet pipe (6) and the slurry outlet on-off valve (22) after passing through the slurry pump (3);
9) and continuously preparing: mixing the pulped pulp, storing the mixed pulp in a pulp blending tank, transferring the mixed pulp into a pre-acidification tank for pre-acidification for 20-30 minutes, adjusting the pH of the mixed pulp to 5.5-6.0, transferring the mixed pulp into a pulp forming tank, online diluting the pulp in the pulp forming tank by acidic white water in an external white water tank, acidifying the pulp to pH 5.0-5.5, removing slag by a four-section slag remover and a pressure screen, online adjusting the pH value of the pulp to 4.0-5.5, then distributing the pulp on a net by an air cushion type flow box, pre-dehydrating by a water scraping plate and a vacuum dehydrating device, further dehydrating by a squeezing part, pre-drying the dehydrated pulp by three drying cylinders, diluting a mildew preventive according to the concentration of 5-15%, acidifying the pulp to pH 4.5-5.5, pumping the pulp into a charging tank, surface coating by a film transfer glue applicator, drying after surface coating, calendaring, and press polishing, And (5) carrying out online detection by a paper defect detection system and coiling by a paper winder to obtain the finished product of the mould-proof antibacterial liquid crystal electronic glass partition paper.
CN202010563993.9A 2020-06-19 2020-06-19 Glass spacing paper and preparation method thereof Active CN111676734B (en)

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