CN113718554A - Static paper soaking deacidification device and working method - Google Patents
Static paper soaking deacidification device and working method Download PDFInfo
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- CN113718554A CN113718554A CN202111068873.2A CN202111068873A CN113718554A CN 113718554 A CN113718554 A CN 113718554A CN 202111068873 A CN202111068873 A CN 202111068873A CN 113718554 A CN113718554 A CN 113718554A
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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
- D21H25/00—After-treatment of paper not provided for in groups D21H17/00 - D21H23/00
- D21H25/18—After-treatment of paper not provided for in groups D21H17/00 - D21H23/00 of old paper as in books, documents, e.g. restoring
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M7/00—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock
- B41M7/0063—Preservation or restoration of currency, books or archival material, e.g. by deacidifying
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Abstract
The invention relates to a paper static soaking deacidification device and a working method thereof, wherein the paper static soaking deacidification device comprises a processing unit, a liquid storage unit and a recovery unit which are respectively connected with a control unit; the treatment unit comprises a treatment chamber, the bottom of the treatment chamber is respectively connected with a liquid inlet valve and a liquid outlet valve, the inlet of the liquid inlet valve is connected with a first liquid supply pump through a pipeline, and the outlet of the liquid outlet valve is connected with a liquid storage tank through a treatment liquid filter through a pipeline; the liquid storage unit comprises a liquid storage tank, the bottom of the liquid storage tank is connected with an inlet of a first liquid supply pump through a pipeline, and an outlet of the first liquid supply pump is connected with an inlet of a liquid inlet valve of the treatment chamber through a pipeline; the recovery unit comprises a vacuum device connected with the processing chamber through a pipeline and a recovery box connected with the liquid storage box, the outlet of the vacuum device is connected with the recovery box through a condensing device, the recovery box is connected with the inlet of a second liquid supply pump through a pipeline, and the outlet of the second liquid supply pump is connected with the liquid storage box through a recovery box liquid discharge valve. The paper is soaked and deacidified in an automatic mode, and secondary damage to the paper caused by shaking is avoided based on the static reaction process.
Description
Technical Field
The invention relates to the field of document protection, in particular to a static paper soaking deacidification device and a working method.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
Paper documents have acidification due to the limitation of the paper making technology level, and the paper gradually turns yellow and becomes brittle and even has the phenomena of pulverization and fragmentation and the like along with the passage of time. To solve this problem, the paper literature must be deacidified.
The method comprises the steps of immersing the paper document to be treated in a strong-volatility anhydrous deacidification solution containing nano-scale magnesium oxide particles, taking out the document after magnesium oxide is fully distributed on the surface and inside of the document, reacting the magnesium oxide in the paper with moisture in the air and CO2 gradually to generate an alkaline substance along with the volatilization of the residual liquid organic solvent in the document, and neutralizing the alkaline substance with acid and alkali in the paper to achieve the deacidification effect. The solution soaking method can not cause paper deformation and wrinkling, and can not cause the fading and feathering of the handwriting; the anhydrous deacidification liquid also has the advantages of no toxicity, no pollution, no combustion, no explosion, no corrosion and the like.
In the deacidification process of the non-aqueous dispersion system, the conventional treatment mode is manual treatment or local automatic treatment, so that the deacidification efficiency is low and the labor intensity is high; in the soaking process, due to the precipitation characteristic of the deacidification material, the paper needs to be shaken or shaken in the deacidification process of the non-aqueous dispersion system to prevent the deacidification liquid from precipitating and ensure the deacidification to be uniform, but because the storage time of the paper subjected to deacidification is long, the strength of the paper is low, and the secondary damage is easily brought to the paper in the shaking process; after soaking, the paper is dried by adopting a natural volatilization mode, and the deacidification working time is long, so that the deacidification solvent cannot be recovered by volatilization, and the deacidification cost is increased.
Disclosure of Invention
In order to solve at least one technical problem in the background art, the invention provides a static paper soaking deacidification device and a working method thereof, which ensure the reaction efficiency in a way of matching static soaking with heating, avoid shaking or vibration in the soaking process, return the waste heat of a liquid deacidification solution after soaking is finished to a liquid storage tank, recycle the volatilized vapor deacidification solution and return the recovered liquid storage tank to realize recycling, reduce the secondary damage to paper while ensuring the deacidification reaction efficiency, and simultaneously realize automatic operation.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a static paper soaking deacidification device, which comprises a liquid storage unit, a processing unit and a recovery unit, wherein the liquid storage unit, the processing unit and the recovery unit are positioned in a shell and are respectively connected with a control unit;
the treatment unit comprises a treatment chamber, the bottom of the treatment chamber is respectively connected with a liquid inlet valve outlet and a liquid outlet valve inlet, the liquid inlet valve inlet is connected with the first liquid supply pump through a pipeline, and the liquid outlet valve outlet is connected with the liquid storage tank through a treatment liquid filter through a pipeline;
the liquid storage unit comprises a liquid storage tank, the bottom of the liquid storage tank is connected with an inlet of a first liquid supply pump through a pipeline, and an outlet of the first liquid supply pump is connected with an inlet of a liquid inlet valve of the treatment chamber through a pipeline;
the recovery unit comprises a vacuum device connected with the processing chamber through a pipeline and a recovery box connected with the liquid storage box; the outlet of the vacuum device is connected with a recycling tank through a condensing device, the recycling tank is connected with the inlet of a second liquid supply pump through a pipeline, and the outlet of the second liquid supply pump is connected with a liquid storage tank through a liquid discharge valve of the recycling tank.
The outlet of the first liquid supply pump is also connected with the inlet of a liquid storage tank reflux valve through a pipeline, and the outlet of the liquid storage tank reflux valve is connected to the liquid storage tank.
The outlet of the second liquid supply pump is also connected with the inlet of the return valve of the recovery tank, and the outlet of the return valve of the recovery tank is connected with the recovery tank.
And a recycling liquid filter is arranged on an outlet pipeline of the condensing device, an inlet of the recycling liquid filter is connected with the condensing device, and an outlet of the recycling liquid filter is connected with the recycling box.
The top parts of the treatment chamber, the liquid storage tank and the recovery tank are all provided with a stop valve communicated with the atmospheric environment.
The treatment chamber includes the treatment chamber box, and treatment chamber box inner wall is equipped with the heating band, and the heat-conducting plate is connected towards the direction of treatment chamber box inner space to the heating band, and the heating band is equipped with the insulating layer towards the direction of treatment chamber box lateral wall, is equipped with at least a set of deacidification box in the space that the heat-conducting plate formed, and deacidification box is vertical evenly arranged.
The processing chamber box body is provided with a side door, and one side of the side door facing the inside of the box body is provided with a sealing strip.
The deacidification box is of a box-shaped structure, and the box-shaped structure is formed by at least one group of porous structures.
Condensing equipment includes the condensing unit, and the outlet conduit of condensing unit returns the entry of condensing unit through the evaporimeter, and the evaporimeter is connected with coolant liquid circulating pump and deacidification solvent condenser in proper order, is equipped with coolant liquid temperature sensor on the pipeline of deacidification solvent condenser to evaporimeter.
The treatment chamber box body is provided with a pressure sensor, the treatment chamber box body and the liquid storage box are provided with temperature sensors, and the treatment chamber box body, the liquid storage box and the recovery box are provided with liquid level sensors; and the pressure sensor, the temperature sensor and the liquid level sensor are all connected with the control unit.
A second aspect of the invention provides a method of operating the apparatus described above, comprising the steps of:
setting the temperature of deacidification liquid in a liquid storage tank of a liquid storage unit, the internal temperature of a processing chamber of a processing unit and the cooling temperature of a condensing device of a recovery unit;
the liquid inlet valve of the treatment chamber is opened, the first liquid supply pump is started, the deacidification liquid flows to the treatment chamber from the liquid storage chamber, and the liquid inlet valve of the treatment chamber is closed to realize soaking when the liquid level reaches a set value;
after soaking, opening a drainage valve of the treatment chamber, returning deacidified liquid to a liquid storage tank through a treatment liquid filter, emptying the deacidified liquid in the treatment chamber, and closing the drainage valve of the treatment chamber;
the vacuum device of the recovery unit is started, the deacidified liquid after being extracted and vaporized is liquefied by the condensing device and enters the recovery box through the recovery liquid filter, and the deacidified liquid in the recovery box returns to the liquid storage box of the liquid storage unit by the aid of the second liquid supply pump.
Compared with the prior art, the above one or more technical schemes have the following beneficial effects:
1. the paper is soaked and deacidified in an automatic mode, the soaking process is a static reaction process, and secondary damage to the paper is avoided due to no shaking and vibration.
2. The deacidification boxes for placing the paper in the treatment chamber are longitudinally arranged, so that the area of a horizontal plane is reduced, and the possibility that precipitates in the deacidification process are attached to the surface of the paper is reduced.
3. The liquid inlet and the liquid outlet are simultaneously finished at the bottom of the treatment chamber, the gas in the treatment chamber is discharged by utilizing the process that the liquid level is gradually increased in cooperation with the top exhaust, and the phenomenon that the gas is easily mixed in the high-level liquid inlet is avoided.
4. The recovery device with heating is utilized to realize the recovery of deacidification liquid, and the preheating process is formed while the waste is reduced, so that the reaction activity of the deacidification process is improved.
5. The treatment chamber and the whole device form a closed space with a heating function, so that the deacidification solution is prevented from volatilizing to pollute the environment.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
FIG. 1 is a schematic diagram of the overall structure provided by one or more embodiments of the present invention;
FIG. 2 is a schematic diagram of a control unit architecture provided in accordance with one or more embodiments of the present invention;
FIG. 3 is a schematic view of a reservoir configuration provided by one or more embodiments of the present invention;
FIG. 4 is a schematic view of a process chamber configuration provided in accordance with one or more embodiments of the present invention;
FIG. 5 is a schematic diagram of a condensing unit according to one or more embodiments of the present invention;
FIG. 6 is a schematic diagram of a recycling bin configuration provided by one or more embodiments of the present invention;
FIG. 7 is a schematic diagram of a soak box according to one or more embodiments of the present disclosure;
in fig. 1: 1. a housing, 2, a control unit, 3, a processing chamber, 4, a processing chamber vent valve, 5, a processing chamber liquid inlet valve, 6, a processing chamber liquid outlet valve, 7, a processing liquid filter, 8, a liquid storage tank, 9, a liquid storage tank vent valve, 10, a liquid storage tank return valve, 11, a liquid storage tank liquid supply pump, 12, a vacuum device, 13, a condensing device, 14, a recovery liquid filter, 15, a recovery tank, 16, a recovery tank vent valve, 17, a recovery tank return valve, 18, a recovery tank liquid outlet valve, 19, a recovery tank liquid supply pump;
in fig. 3: 81. a liquid storage box body 82, a liquid storage temperature sensor 83, a liquid storage level sensor 84 and a liquid storage heating belt;
in fig. 4: 31. a processing chamber box body 32, a pressure sensor 33, a processing temperature sensor 34, a processing liquid level sensor 35, a processing heating belt 36, a heat conducting plate 37, a side door 38, a sealing strip 39 and a deacidification box;
in fig. 5: 131. a condensing unit 132, an evaporator 133, a cooling liquid circulating pump 134, a deacidification solvent condenser 135 and a cooling liquid temperature sensor;
in fig. 6: 151. a recovery box body 152, a recovery liquid level sensor 153 and a liquid injection port.
Detailed Description
The invention is further described with reference to the following figures and examples.
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
As described in the background art, the non-aqueous dispersion deacidification solution uses a volatile-enhanced solvent to perform deacidification treatment, and the deacidification process adopts a shaking or vibrating mode to improve the reaction efficiency so as to cause secondary damage to paper.
The first embodiment is as follows:
as shown in fig. 1-7, the object of the present embodiment is to provide a static paper soaking and deacidifying apparatus, which includes a liquid storage unit, a processing unit and a recovery unit, which are installed in a casing 1 and connected to a control unit;
the treatment unit comprises a treatment chamber 3, the top of the treatment chamber 3 is provided with a vent valve 4, the bottom of the treatment chamber 3 is provided with a liquid inlet valve 5 and a liquid outlet valve 6, and outlets of the liquid inlet valve 5 and the liquid outlet valve 6 are connected to the bottom of the treatment chamber 3 through pipelines; the inlet of the liquid inlet valve 5 is connected with a liquid supply pump 11 (a first liquid supply pump) through a pipeline, and the inlet of the liquid outlet valve 6 is connected with a filter 7 and a liquid storage tank 8 through a pipeline.
As shown in fig. 4, the processing chamber 3 includes a box 31, the box 31 has a side door 37, a sealing strip is provided on one side of the side door 37 facing the inside of the box 31, a heating belt 35 is provided on the inner wall of the box 37, the heating belt 35 is connected to a heat conducting plate 36 facing the inside of the box 31, the heating belt 35 is provided with a heat insulating layer facing the side wall of the box 31, at least one set of deacidification boxes 39 is provided in the space formed by the heat conducting plate 36, and the deacidification boxes 39 are uniformly arranged in the longitudinal direction; the box 31 is provided with a pressure sensor 32, a temperature sensor 33 and a liquid level sensor 34, the detection end of the pressure sensor 32 is located at the top of the box to acquire the pressure inside the box 31, the detection end of the temperature sensor 33 is located inside the box 31 to acquire the temperature inside the box 31, and the detection end of the liquid level sensor 34 is located on the bottom plate inside the box 31 to acquire the liquid level height of the deacidification liquid filled in the box 31.
In this embodiment, the surface where the side door 37 is located is the front side, and the heating bands in the box 31 are disposed on the left side, the right side, and the rear side of the inner wall of the box 31 to form a heating space with an opening, and the opening is located at the side door 37; the heat conducting plate 36 is preferably an aluminum plate, and is used for efficiently guiding the heat generated by the heating belt 35 into the box body 31, and the heat insulating layer between the heating belt 35 and the inner wall of the box body 31 is used for preventing the heat from being transmitted to the side wall, so that the heat generated by the heating belt 35 is transmitted to the inner space of the box body 31, the heat loss of the treatment chamber box body 31 is reduced while the heat transmission efficiency is improved; the sealing strip 38 installed at the corresponding side door 37 can be a heat-resistant silica gel sealing strip, and can bear the heat inside the box body 31 while sealing the box body 31, and the deacidification and drying conditions inside the box body 31 can be observed at any time by installing glass on the side door 37.
The deacidification box 39 is a box-shaped structure composed of porous plates, for example, a metal wire mesh or a porous plate with porosity satisfying requirements is used, in this embodiment, the deacidification box 39 is a rectangular box body composed of a metal wire mesh, and a door is opened on one side of the box body, as shown in fig. 7 (the metal wire mesh is not shown for convenience of expression), and is used for accommodating paper or books, the metal wire mesh can be regarded as a porous plate with an extremely high opening rate, deacidification liquid enters the inside of the deacidification box 39 to the maximum extent by utilizing the mesh structure of the metal wire mesh so as to soak the paper or the books, meanwhile, the metal wire mesh has a certain strength maintaining shape capable of bearing volume change caused by expansion after the paper absorbs the deacidification liquid, meanwhile, the contact area of the metal wire mesh and the paper satisfies the requirements, and the paper cannot be torn due to the excessively small contact area after the paper absorbs the liquid.
Deacidifying liquid is discharged from the bottom of the treatment chamber box body 31, the deacidifying liquid has precipitates, in order to avoid the precipitates in the deacidifying liquid from depositing on paper, the deacidifying boxes 39 are longitudinally arranged, and under the angle of the longitudinal arrangement, the precipitates can be deposited on a horizontal plane and are not easy to deposit on a vertical plane due to the fact that the area of the horizontal plane is far smaller than that of the vertical plane, and therefore multiple groups of deacidifying boxes 39 are longitudinally arranged.
When the paper in the deacidification box 39 is not filled, a clamp can be arranged in the deacidification box 39 to clamp the paper or documents in the deacidification box to a certain extent, for example, the paper or documents are laid flatly in the newspaper, and the phenomenon that the paper becomes soft after absorbing deacidification liquid and falls into the bottom of the deacidification box 39 under the action of gravity is avoided, so that the phenomenon of curling is caused, the structure of the clamp is not limited, and any clamp in the prior art can be realized.
The stock solution unit includes liquid reserve tank 8, and 8 tops of liquid reserve tank are equipped with breather valve 9, and 8 bottoms of liquid reserve tank pass through the entry of pipe connection liquid feed pump 11, and the entry of treatment room feed liquor valve 5 and the entry of liquid reserve tank backwash valve 10 are connected respectively to the export of liquid feed pump 11 through the pipeline, and the exit linkage of liquid reserve tank backwash valve 10 is on the lateral wall of liquid reserve tank 8, and the lateral wall of liquid reserve tank 8 still passes through the export of pipe connection collection box flowing back valve 18.
As shown in fig. 3, the liquid storage tank 8 comprises a tank body 81, the tank body 81 is provided with a temperature sensor 82 and a liquid level sensor 83 for respectively acquiring the temperature and the liquid level inside the tank body 81 of the liquid storage tank, and the lower half section of the tank body 81 is provided with a heating belt 84 for preheating the deacidification liquid in the tank body 81.
In this embodiment, the liquid storage heating belt 84 is disposed at the bottom of the box 81 and the lower half of the sidewall of the box 81, and may be disposed only at the bottom, so as to ensure that the liquid storage tank 8 can heat the stored deacidification liquid.
The recovery unit comprises a vacuum device 12 connected with the processing chamber 3 and a recovery tank 15 connected with the liquid storage tank 8 through a pipeline; the inlet of the vacuum device 12 is connected with the processing chamber 3, the outlet is connected with the condensing device 13, the outlet of the condensing device 13 is connected with the recovery box 15 through a pipeline, and the outlet pipeline of the condensing device 13 is provided with a recovery liquid filter 14; the top of the recovery tank 15 is provided with a vent valve 16, the side wall of the recovery tank 15 is connected with the outlet of a return valve 17 through a pipeline, the bottom of the recovery tank 15 is connected with the inlet of a liquid supply pump 19 (a second liquid supply pump) through a pipeline, and the outlet of the liquid supply pump 19 of the recovery tank is connected with the inlet of the return valve 17 through a pipeline; the outlet of the recycling tank liquid supply pump 19 is also connected with the inlet of a liquid discharge valve 18, and the outlet of the liquid discharge valve 18 is connected with the liquid storage tank 8 through a pipeline.
As shown in fig. 5, the condensing unit 13 includes a condensing unit 131, an outlet pipe of the condensing unit 131 returns to an inlet of the condensing unit 131 through an evaporator 132, the evaporator 132 is sequentially connected to a cooling liquid circulating pump 133 and a deacidification solvent condenser 134, and a cooling liquid temperature sensor 135 is disposed on a pipe from the deacidification solvent condenser 134 to the evaporator 132.
The refrigerant is processed by the condensing unit 131 to become low-temperature low-pressure liquid, and the low-temperature low-pressure liquid exchanges heat with the cooling liquid through the evaporator 132, absorbs heat and becomes low-temperature low-pressure gas, and the low-temperature low-pressure gas enters the condensing unit 131 to form closed circulation.
After the cooling liquid is cooled, the cooling liquid is heat-exchanged with the gaseous deacidification solvent in the deacidification solvent condenser 134 by the cooling liquid circulating pump 133, so that the gaseous deacidification solvent is liquefied and recovered.
The coolant temperature sensor 135 detects the coolant temperature, thereby achieving coolant temperature control.
As shown in fig. 6, the recovery tank 15 includes a recovery tank 151, a liquid injection port 153 is provided at the top of the recovery tank 151, and a liquid level sensor 152 is provided on the recovery tank 151 to obtain the liquid level inside the tank 151.
The control unit is provided with a human-computer interaction interface and a central processing unit, and the central processing unit is respectively connected with the liquid storage unit, the processing unit and the recovery unit through I/O interfaces (input/output) to realize information interaction with the human-computer interaction interface.
A central processing unit: the automatic control system consists of a core control module, a memory, an I/O interface unit, a communication interface unit, an internal power supply and the like, and is responsible for acquiring field signals, executing a user program and outputting a command to control a field execution mechanism so as to complete the automatic control of the immersion type deacidification machine. The user programs include a common program, a manual program, an automatic program, and a failure processing program.
A human-computer interaction interface: the system consists of an automatic operation picture, a manual operation picture, a debugging picture, a parameter setting picture, a historical trend picture and an alarm recording picture, and is responsible for man-machine information interaction, data access and statistical management.
The device with the structure realizes deacidification treatment of paper in a static soaking mode, the paper is loaded into a plurality of deacidification boxes 39, each deacidification box is placed in the treatment chamber box body 31 in a longitudinal arrangement mode, a side door 37 is closed, a sealing strip 38 is utilized to enable the treatment chamber box body 31 to form a closed space, deacidification solution enters from a treatment chamber liquid inlet valve 5 at the bottom of the treatment chamber box body 31, a treatment liquid level sensor 34 acquires liquid level information of the deacidification solution, a treatment heating belt 35 and a heat conducting plate 36 realize heating of the treatment chamber box body 31 and are used for activation and subsequent drying processes of the deacidification solution, and a treatment temperature sensor 33 acquires temperature information; after soaking the completion, deacidification liquid is discharged from treatment chamber flowing-back valve 6 at the bottom of treatment chamber box 31, because deacidification liquid's solvent has strong volatility, consequently in the soaking in-process and after soaking, the gaseous solvent that is full of in the treatment chamber box 31 and volatilizes needs to be retrieved, then vacuum apparatus 12 sucks gaseous solvent and utilizes condensing equipment 13 to cool off and enter collection box 15 after for liquid, utilize collection box confession liquid pump 19 to return recycle in the stock solution box 81 of stock solution unit, corresponding collection box return valve 17 and stock solution box return valve 10 make respective box form the circulation, be convenient for adjust the deacidification solvent that gets into the stock solution unit from the recovery unit, and get into the solvent of processing unit from deacidification stock solution unit.
The solute in the deacidified solution is a substance participating in the deacidification process, and the consumption of the substance is less in the deacidification process, so that the deacidified solution can be maintained in a high concentration state for a long time even if the solvent is recovered.
The paper is soaked and deacidified in an automatic mode, the soaking process is a static reaction process, and secondary damage to the paper is avoided due to no shaking and vibration.
The deacidification boxes for placing the paper in the treatment chamber are longitudinally arranged, so that the area of a horizontal plane is reduced, and the possibility that precipitates in the deacidification process are attached to the surface of the paper is reduced.
The liquid inlet and the liquid outlet are simultaneously finished at the bottom of the treatment chamber, the top is used for exhausting, the gas in the treatment chamber is discharged by utilizing the process that the liquid level is gradually increased, and the problem that the gas is easily mixed in the high-level liquid inlet is avoided.
The recovery device with heating is utilized to realize the recovery of deacidification liquid, and the preheating process is formed while the waste is reduced, so that the reaction activity of the deacidification process is improved.
The treatment chamber and the whole device form a closed space with a heating function, so that the deacidification solution is prevented from volatilizing to pollute the environment.
Example two:
the present embodiment aims to provide a working method of the apparatus in the first embodiment, which includes the following steps:
setting the temperature of deacidification liquid in a liquid storage tank of a liquid storage unit, the internal temperature of a processing chamber of a processing unit and the cooling temperature of a recovery unit;
the liquid inlet valve of the treatment chamber is opened, the liquid supply pump of the liquid storage tank is started, the deacidification liquid flows to the treatment chamber from the liquid storage chamber, and when the liquid level reaches a set value, the liquid inlet valve of the treatment chamber is closed to realize soaking;
after soaking, the drainage valve of the treatment chamber is opened, deacidification liquid returns to the liquid storage tank through the treatment liquid filter, and the drainage valve of the treatment chamber is closed when the deacidification liquid in the treatment chamber is emptied;
the vacuum device of the recovery unit is started, the deacidified liquid after being extracted and vaporized is liquefied by the condensing device and enters the recovery box through the recovery liquid filter, and the deacidified liquid in the recovery box returns to the liquid storage box of the liquid storage unit by using the liquid supply pump of the recovery box.
The working process of the device comprises a pretreatment process, an automatic soaking process and a vacuum recovery process, and specifically comprises the following steps:
1. the pretreatment process comprises the following steps: executing a preprocessing program according to preset working parameters, wherein the preprocessing program comprises the following steps: the temperature of the deacidification liquid in the liquid storage tank is set by the control unit to be kept within a certain range (for example, between 30 and 35 ℃), so that the sufficiency and the high efficiency of the later-stage soaking process are facilitated; the temperature in the treatment chamber is set through the control unit, so that the paper to be treated is kept within a certain range (for example, between 45 and 55 ℃), and magnesium oxide is convenient to effectively adhere in the later soaking process; the control unit sets the cooling temperature to maintain the temperature within a certain range (e.g., between 5-10 deg.C) in preparation for the later recovery of the deacidification solvent. And detecting the tightness of the treatment chamber, and judging whether to enter a soaking deacidification process.
2. The automatic soaking process:
(1) liquid supply in the treatment chamber: the liquid inlet valve 5 of the treatment chamber is opened, the liquid supply pump of the liquid storage tank is started to enable the deacidification liquid to flow to the treatment chamber from the liquid storage chamber, the liquid level height of the treatment chamber is detected through the liquid level sensor of the treatment chamber, when the liquid level reaches a set value (all paper documents are soaked in the deacidification liquid), the liquid supply pump of the liquid storage tank is stopped, and the liquid inlet valve 5 of the treatment chamber is closed. In the process of supplying liquid to the processing chamber, the liquid level sensor of the liquid storage tank detects the liquid level of the liquid storage tank in real time, and when the liquid level of the liquid storage tank is lower than the lowest set value (set point), the liquid supply to the processing chamber is stopped and an alarm is given.
(2) Soaking: the soaking time is preset, and the time can be changed at any time according to the actual situation in the soaking process, so that the soaking time can be immediately effective. In order to ensure the soaking effect, the temperature of the treatment chamber is controlled in the soaking process so as to keep the temperature of the treatment chamber constant.
(3) Draining the liquid in the treatment chamber: and opening a drain valve 6 of the treatment chamber, enabling the deacidification liquid to flow back to the liquid storage tank through the filter under the action of gravity, and closing valves in the pipeline after the deacidification liquid in the treatment chamber is emptied. In the process of liquid drainage of the treatment chamber, the current state of the impurity filter is judged according to the flow change, if the flow rate is too low, an operator is reminded to replace a filter element of the treatment liquid filter, the liquid drainage of the treatment chamber is suspended, and after replacement, the operator sends a continuous working command to recover the liquid drainage process of the treatment chamber.
3. Vacuum recovery process
Controlling the temperature in the treatment chamber to be a certain value, facilitating the gasification of deacidification liquid, starting a vacuum recovery device, extracting the gasified deacidification liquid to enter a condensing device, liquefying the deacidification liquid in the condensing device, and flowing into a recovery box. Since the deacidified paper may have minute impurities, the filtered recycle liquid can be kept pure by the recycle liquid filter 14. The pressure value in the treatment chamber is detected through the pressure sensor, when the pressure value in the treatment chamber is smaller than the lower pressure limit, the vacuum device stops working, the vaporization of the acid removing liquid in the treatment chamber is waited, and when the pressure value in the treatment chamber is larger than the upper pressure limit, the vacuum device is started to carry out pulse type vacuum recovery treatment. And when the flow of the recovery liquid is lower than the lower flow limit, stopping the pulsating vacuum recovery process, opening the vent valve of the treatment chamber until the air pressure in the treatment chamber is balanced, and finishing the whole process.
In the earlier stage of the vacuum recovery process, the deacidification liquid is more in the paper, and the volatilization speed is fast, if the vacuum recovery air current is too fast, can lead to the condensation to retrieve inadequately, utilizes the vacuum to retrieve the governing valve, and in the earlier stage of retrieving, the valve aperture is less, avoids the air flow too big, along with the reduction of deacidification liquid in the paper, the volatilization speed becomes slow, and the vacuum is retrieved the governing valve aperture and is crescent, guarantees recovery efficiency.
The specific structural type of the vacuum device is not limited, and any structural type in the prior art can be adopted, such as any structural type of a rotary vane vacuum pump, a water ring vacuum pump, a water jet vacuum pump, a roots vacuum pump and the like, or a vacuum system formed by connecting any conventional vacuum pumps in series and/or in parallel.
In the recovery process, level sensor detects the collection box liquid level, and when the liquid level was full of, the vacuum recovery device was suspended, sent audible and visual warning, reminded operating personnel and poured into the make-up fluid, and after the operation was accomplished, operating personnel sent and continued the work order, made the device automatically carry out the collection box inner loop, reached the settlement time after, through in the collection box liquid feed pump with the leading-in liquid reserve tank of liquid. The vacuum recovery process then continues until the entire process is complete.
The paper is soaked and deacidified in an automatic mode, the soaking process is a static reaction process, and secondary damage to the paper is avoided due to no shaking and vibration.
The deacidification boxes for placing the paper in the treatment chamber are longitudinally arranged, so that the area of a horizontal plane is reduced, and the possibility that precipitates in the deacidification process are attached to the surface of the paper is reduced.
The liquid inlet and the liquid outlet are simultaneously finished at the bottom of the treatment chamber, the top is used for exhausting, the gas in the treatment chamber is discharged by utilizing the process that the liquid level is gradually increased, and the problem that the gas is easily mixed in the high-level liquid inlet is avoided.
The recovery device with heating is utilized to realize the recovery of deacidification liquid, and the preheating process is formed while the waste is reduced, so that the reaction activity of the deacidification process is improved.
The treatment chamber and the whole device form a closed space with a heating function, so that the deacidification solution is prevented from volatilizing to pollute the environment.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a static soaking deacidification device of paper which characterized in that: comprises a processing unit, a liquid storage unit and a recovery unit which are positioned in a shell and are respectively connected with a control unit;
the treatment unit comprises a treatment chamber, the bottom of the treatment chamber is respectively connected with a liquid inlet valve outlet and a liquid outlet valve inlet, the liquid inlet valve inlet is connected with the first liquid supply pump through a pipeline, and the liquid outlet valve outlet is connected with the liquid storage tank through a treatment liquid filter through a pipeline;
the liquid storage unit comprises a liquid storage tank, the bottom of the liquid storage tank is connected with an inlet of a first liquid supply pump through a pipeline, and an outlet of the first liquid supply pump is connected with an inlet of a liquid inlet valve of the treatment chamber through a pipeline;
the recovery unit comprises a vacuum device connected with the processing chamber through a pipeline and a recovery box connected with the liquid storage box, the outlet of the vacuum device is connected with the recovery box through a condensing device, the recovery box is connected with the inlet of a second liquid supply pump through a pipeline, and the outlet of the second liquid supply pump is connected with the liquid storage box through a recovery box liquid discharge valve.
2. A static paper soaking deacidification apparatus as defined in claim 1, wherein: the outlet of the first liquid supply pump is also connected with the inlet of a liquid storage tank reflux valve through a pipeline, and the outlet of the liquid storage tank reflux valve is connected to the liquid storage tank.
3. A static paper soaking deacidification apparatus as defined in claim 1, wherein: the outlet of the second liquid supply pump is also connected with the inlet of the return valve of the recovery tank, and the outlet of the return valve of the recovery tank is connected with the recovery tank.
4. A static paper soaking deacidification apparatus as defined in claim 1, wherein: and a recovery liquid filter is arranged on an outlet pipeline of the condensing device, an inlet of the recovery liquid filter is connected with the condensing device, and an outlet of the recovery liquid filter is connected with the recovery box.
5. A static paper soaking deacidification apparatus as defined in claim 1, wherein: the top parts of the treatment chamber, the liquid storage tank and the recovery tank are all provided with a stop valve communicated with the atmospheric environment.
6. A static paper soaking deacidification apparatus as defined in claim 1, wherein: the treatment chamber comprises a treatment chamber box body, a heating belt is arranged on the inner wall of the treatment chamber box body, the heating belt is connected with a heat-conducting plate in the direction towards the inner space of the treatment chamber box body, a heat-insulating layer is arranged in the direction towards the side wall of the treatment chamber box body by the heating belt, at least one group of deacidification boxes are arranged in the space formed by the heat-conducting plate, and the deacidification boxes are longitudinally and uniformly arranged; the deacidification box is formed into a box shape through at least one group of porous structures.
7. The static paper soaking deacidification apparatus as claimed in claim 6, wherein: the treatment chamber box has the side door, and the side door is equipped with the sealing strip towards the inside one side of box.
8. A static paper soaking deacidification apparatus as defined in claim 1, wherein: condensing equipment includes the condensation unit, and the exit tube of condensation unit returns to the entry of condensation unit through the evaporimeter, and the evaporimeter is connected with coolant liquid circulating pump and deacidification solvent condenser in proper order, is equipped with coolant liquid temperature sensor on the pipeline of deacidification solvent condenser to evaporimeter.
9. A static paper soaking deacidification apparatus as defined in claim 1, wherein: the treatment chamber box body is provided with a pressure sensor, the treatment chamber box body and the liquid storage box are provided with temperature sensors, and the treatment chamber box body, the liquid storage box and the recovery box are provided with liquid level sensors; and the pressure sensor, the temperature sensor and the liquid level sensor are all connected with the control unit.
10. Method of operation of a device according to any of claims 1-9, characterized in that: the method comprises the following steps:
setting the temperature of deacidification liquid in a liquid storage tank of a liquid storage unit, the internal temperature of a processing chamber of a processing unit and the cooling temperature of a condensing device of a recovery unit;
the liquid inlet valve of the treatment chamber is opened, the first liquid supply pump is started, the deacidification liquid flows to the treatment chamber from the liquid storage chamber, and the liquid inlet valve of the treatment chamber is closed to realize soaking when the liquid level reaches a set value;
after soaking, opening a drainage valve of the treatment chamber, returning deacidified liquid to a liquid storage tank through a treatment liquid filter, emptying the deacidified liquid in the treatment chamber, and closing the drainage valve of the treatment chamber;
the vacuum device of the recovery unit is started, the deacidified liquid after being extracted and vaporized is liquefied by the condensing device and enters the recovery box through the recovery liquid filter, and the deacidified liquid in the recovery box returns to the liquid storage box of the liquid storage unit by the aid of the second liquid supply pump.
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| CN202111068873.2A CN113718554B (en) | 2021-09-13 | 2021-09-13 | Static paper soaking deacidification device and working method |
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| CN202111068873.2A CN113718554B (en) | 2021-09-13 | 2021-09-13 | Static paper soaking deacidification device and working method |
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| CN113718554B CN113718554B (en) | 2022-10-11 |
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| CN105088870A (en) * | 2015-07-15 | 2015-11-25 | 国家图书馆 | Paper deacidification agent, and paper deacidification system and method thereof |
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| CN207419155U (en) * | 2017-10-27 | 2018-05-29 | 清华大学 | A kind of paper deacidification system with rotary bracket |
| CN109944113A (en) * | 2019-01-29 | 2019-06-28 | 齐鲁工业大学 | A kind of drying device and method for paper submergence depickling |
| WO2021031134A1 (en) * | 2019-08-16 | 2021-02-25 | 南京华鼎纳米技术研究院有限公司 | Mass deacidification apparatus for books, and control system for same |
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2021
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105088870A (en) * | 2015-07-15 | 2015-11-25 | 国家图书馆 | Paper deacidification agent, and paper deacidification system and method thereof |
| CN106192573A (en) * | 2016-07-27 | 2016-12-07 | 陕西天洁净型煤化工技术开发有限公司 | A kind of apparatus and method being applicable to paper document batch deacidification |
| CN207419155U (en) * | 2017-10-27 | 2018-05-29 | 清华大学 | A kind of paper deacidification system with rotary bracket |
| CN109944113A (en) * | 2019-01-29 | 2019-06-28 | 齐鲁工业大学 | A kind of drying device and method for paper submergence depickling |
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| CN113718554B (en) | 2022-10-11 |
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