CN108328674B

CN108328674B - Sealed water recovery system

Info

Publication number: CN108328674B
Application number: CN201810141372.4A
Authority: CN
Inventors: 唐明全; 翟凤卫; 韦震; 陆长军
Original assignee: Gold East Paper Jiangsu Co Ltd
Current assignee: Gold East Paper Jiangsu Co Ltd
Priority date: 2018-02-09
Filing date: 2018-02-09
Publication date: 2020-07-03
Anticipated expiration: 2038-02-09
Also published as: CN108328674A

Abstract

The embodiment of the application discloses sealing water recovery system for retrieve the produced sealing water of coating unit, recovery system is including collecting subassembly, filter equipment and reflux unit. Wherein the collecting assembly is used for collecting the sealing water generated by a plurality of nodes of the coating device. The filtering device is used for filtering the sealing water collected by the collecting component to generate filtered water. The backflow device is used for conveying the filtered water to the coating device for recycling. Through the mode, the application can recycle the sealing water generated by the coating device, and is energy-saving and environment-friendly.

Description

Sealed water recovery system

Technical Field

The invention relates to the field of wastewater treatment, in particular to a sealed water recovery system.

Background

The coating machine is mainly used for the surface coating process production of films, paper and the like, and the coating machine is used for coating a layer of glue, paint or ink with a specific function on a coiled substrate, drying and then rolling.

The coater is required to be continuously operated for a long time, and thus a large amount of water is consumed, and a part of the water is used for lubrication and cooling of various mechanical seals and the like, so that the coater can be ensured to be efficiently and stably operated.

In the prior art, the sealing water is generally directly discharged into a trench to be used as sewage to be discharged, so that a large amount of water is wasted, the sealing water is not recycled in time, the environmental pollution is caused, the energy consumption cost is influenced,

disclosure of Invention

The technical problem that this application mainly solved provides a sealed water recovery system, can carry out recycle, energy-concerving and environment-protective to the sealed water that coating device produced.

In order to solve the above technical problem, an embodiment of the present application provides a sealing water recovery system for recovering sealing water generated by a coating device, where the recovery system includes a collection assembly, a filtering device, and a backflow device. Wherein the collecting assembly is used for collecting the sealing water generated by a plurality of nodes of the coating device. The filtering device is used for filtering the sealing water collected by the collecting component to generate filtered water. The backflow device is used for conveying the filtered water to the coating device for recycling.

Compared with the prior art, the invention has the beneficial effects that: collect coating device's a plurality of nodes through collecting the subassembly and produce sealed water, sealed water is filtered through rethread filter equipment and is produced the drainage, carries the drainage to coating device through reflux unit at last and carries out reuse, so can be with the produced unified recycle of sealed water of each node of coating device dispersion, effectively improve coating device 1 and run for a long time and consume a large amount of water and produce the unable unified recycle's of sealed water problem, reduction in production cost, energy-concerving and environment-protective.

Drawings

FIG. 1 is a schematic structural view of an embodiment of the sealed water recovery system of the present application;

FIG. 2 is a circuit schematic of an embodiment of the sealed water recovery system of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, 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 application.

Referring to fig. 1, the recycling system in the embodiment of the sealing water recycling system of the present application is used for recycling the sealing water generated by the coating apparatus 1, and the recycling system includes a collecting assembly 21, a filtering apparatus 22, and a backflow apparatus 23. Wherein the collecting unit 21 is used for collecting the sealing water generated at the plurality of nodes of the coating apparatus 1. The filtering device 22 is used for filtering the sealing water collected by the collecting assembly 21 to produce filtered water. The return device 23 is used to transfer filtered water to the coating apparatus 1 for reuse.

The collection assembly 21 is used for collecting sealing water generated by a plurality of nodes of the coating device 1, such as sealing water generated by lubrication and cooling of a driving motor of the coating device 1, sealing water generated by lubrication and cooling of various pump shafts, sealing water generated by lubrication and cooling of packing and various mechanical sealing parts, and the like, the sealing water is filtered by the filtering device 22 to generate filtered water, and finally the filtered water is conveyed to the coating device 1 by the backflow device 23 to be recycled, so that the sealing water generated by the nodes dispersed by the coating device 1 can be uniformly recycled, the problem that the sealing water cannot be uniformly recycled due to the fact that the coating device 1 runs for a long time and consumes a large amount of water is effectively solved, the production cost is reduced, and the energy conservation and environmental protection are achieved.

With continued reference to fig. 1, the collection assembly 21 may alternatively include a plurality of branch pipes 211 and a collection tank 213, wherein the plurality of branch pipes 211 respectively collect the sealing water at the plurality of nodes of the coating apparatus 1 and deliver the sealing water to the collection tank 213.

In general, the conventional coating apparatus 1 is large in size, complicated in piping, numerous in facilities, and dispersed, and the seal water generated in the conventional coating apparatus 1 is discharged as waste water and cannot be recycled. The sealing water generated by each node of the coating device 1 is collected by the branch pipes 211, conveyed to the collecting tank 213, and conveyed to the coating device 1 for recycling through the backflow device 23 after being filtered. So design the pipeline and be connected with different nodes, can carry out recycle with the sealed water that each node of dispersion produced, can the water economy resource, reduce cost.

Further, original coating unit 1 of dismouting need not in this application, but carries out pipeline transformation and newly-increased on original coating unit 1, uses a plurality of branch pipes 211 to connect a plurality of nodes and collects sealing water, can sparingly equip the design cost.

With continued reference to fig. 1, the collecting module 21 may further include a main pipe 212, the main pipe 212 connects the branch pipes 211 and the collecting tank 213, the sealing water at the nodes is converged to the main pipe 212 through the branch pipes 211 and is delivered to the collecting tank 213 through the main pipe 212, and the filtering device 22 is disposed on the main pipe 212.

In this embodiment, the branch pipe 211 collects the sealing water generated by the plurality of nodes and then converges the sealing water onto the main pipe 212, and the sealing water is filtered by the filtering device 22 on the main pipe 212 to generate filtered water, which enters the collecting tank 213 and is then transported to the coating device 1 by the return device 23 for recycling. In other embodiments, a plurality of branch pipes 211 may collect the sealing water generated by a plurality of nodes and then respectively convey the sealing water to the collecting tank 213, each branch pipe 211 is provided with a filtering device 22 for filtering the sealing water, or the recovery system arranges the filtering device 22 at a position where the collecting tank 213 communicates with the backflow device 23 so as to allow the filtered water to enter the backflow device 23. Of course, the recycling system may further include a filtered water tank (not shown), the plurality of branch pipes 211 collect the sealing water generated by the plurality of nodes and then enter the collecting tank 213, the collecting tank 213 is provided with a filtering device 22, the filtered water generated by filtering the sealing water enters the filtered water tank (not shown), and the filtered water in the filtered water tank is delivered to the coating device 1 through the backflow device 23.

In this embodiment, the pipe diameter of the main pipe 212 is optionally larger than the pipe diameter of the branch pipe 211, and in actual production, for example, the pipe diameter of the main pipe 212 is 60mm, and the pipe diameter of the branch pipe 211 is 10mm, and of course, the specific pipe diameter is selected and matched according to actual production needs. Each branch pipe 211 may be provided with a different pipe diameter according to the size and flow rate of the generated sealing water.

With continued reference to fig. 1, the returning device 23 may optionally include a return pipe 231 and a recovery pump 232, wherein the recovery pump 232 delivers the filtered water in the collecting tank 213 to the coating device 1 through the return pipe 231 for recycling.

Specifically, the recovery pump 232 sends the filtered water to the coating apparatus 1 through the return pipe 231 by pressure, for example, to a washing water tub of the coating apparatus 1 for reuse. Through setting up recycle pump 232, can accelerate the drainage backward flow speed, promote the utilization ratio of drainage.

With continued reference to fig. 1, the recovery system optionally further includes a fresh water concentration detection device 24 for detecting the clarity of the filtered water. The clear water concentration detection device 24 is provided to detect the clarity of the filtered water, for example, the clarity of the filtered water can be reflected by detecting the concentration of the paint mixed in the sealed water produced by the water used by the coating device 1.

Referring to fig. 1 and fig. 2, optionally, the recycling system further includes a control device 25 for receiving the detection result of the clear water concentration detection device 24, and determining whether the clarity of the filtered water meets the water quality requirement, if yes, the collecting tank 213 enters a recycling state, the recycling pump 232 operates, and the filtered water enters the recycling pipe 231. If not, the collecting tank 213 enters a sewage discharge state, the recovery pump 232 does not work, and the filtered water is discharged to the outside.

The control device 25 is arranged to receive the detection result of the clear water concentration detection device 24 and judge whether the filtered water meets the water quality requirement, so as to control whether the filtered water is recycled or subjected to pollution discharge treatment. Specifically, when the filtered water meets the water quality requirement, the control device 25 controls the collecting tank 213 to enter a recovery state, and the recovery pump 232 pumps the filtered water to enter the coating device 1 through the return pipe 231 for recovery. When the filtered water does not meet the water quality requirement, the control device 25 controls the collecting tank 213 to enter a sewage discharge state, the recovery pump 232 does not work, and the filtered water is discharged along the original sewage discharge pipe 2131. Thus, the water consumption standard of the coating device 1 can be monitored and guaranteed, and the filtered water which does not meet the water quality requirement is prevented from entering the coating device 1 to damage a machine and causing adverse consequences.

In other embodiments, when the filtered water does not meet the water quality requirement, the filtered water is filtered again, for example, the filtered water which does not meet the water quality requirement is filtered again and sent to the recovery collecting tank 213, for example, through another branch pipe (not shown) on which the filtering device 22 is disposed, and the filtered water which does not meet the water quality requirement is collected for secondary filtration. Alternatively, the filtered water that does not meet the water quality requirement is collected in another tank (not shown) for secondary filtration.

Referring to fig. 1 and fig. 2, optionally, the control device 25 includes a controller 251 and a switching valve 252, the controller 251 is respectively connected to the clean water concentration detection device 24, the switching valve 252 and the recovery pump 232, the switching valve 252 is disposed in the collection tank 213, the controller 251 is configured to receive a detection result of the clean water concentration detection device 24 and determine whether the clarity of the filtered water meets the water quality requirement, if yes, the controller 251 controls the switching valve 252 to switch to the feedback pipe 231 to communicate with the collection tank 213 and control the recovery pump 232 to operate, and the collection tank 213 is in a recovery state; if the situation is not met, the controller 251 controls the switching valve 252 to switch to the drainage pipe 2131 to be communicated with the collecting tank 213, that is, the collecting tank 213 is communicated with the outside through the drainage pipe 2131 to drain, the feedback pipe 231 is not communicated, and the recovery pump 232 is controlled not to work, so that the collecting tank 213 is in a drainage state.

For example, the switching valve 252 is disposed at the discharge port of the collecting tank 213, the filtered water is delivered to the feedback pipe 231 or the drain pipe 2131 through the discharge port, after the controller 251 receives the detection result that meets the water quality requirement, the switching valve 252 is controlled to be switched to the feedback pipe 231 to communicate with the collecting tank 213, and if the controller 251 receives the detection result that does not meet the water quality requirement, the switching valve 252 is controlled to be switched to the drain pipe 2131 to communicate with the collecting tank 213, so as to drain the filtered water.

Of course, the feedback pipe 231 and the drainage pipe 2131 may be respectively connected to the collecting tank 213, the feedback pipe 231 and the drainage pipe 2131 are both provided with a switching valve 252, and the controller 251 controls one of the switching valves 252 to be opened and the other switching valve 252 to be closed according to the detection result.

Optionally, the sealing water is generated at least by lubrication and/or cooling of the drive motor of the coating device 1 and by lubrication and/or cooling of the pump shaft seal. Of course, sealing water generated by other nodes, such as packing and sealing water generated by other mechanical seals, can also be included.

Optionally, the filtering device 22 includes at least one of a rotary disc filter, an activated carbon filter, a quartz sand filter, and a porous material filter.

As described above, the present invention is intended to solve the problem that the seal water generated in the conventional coating apparatus 1 cannot be effectively recycled. The sealing water generated by each node of the coating device 1 is collected by the branch pipes 211, conveyed to the collecting tank 213, and conveyed to the coating device 1 for recycling through the backflow device 23 after being filtered. So design the pipeline and be connected with different nodes, can carry out recycle with the sealed water that each node of dispersion produced, can the water economy resource, reduce cost.

The above description is only an embodiment of the present application, and not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes performed by the content of the present specification and the attached drawings, or applied to other related technical fields directly or indirectly, are included in the scope of the present invention.

Claims

1. A seal water recovery system for recovering seal water produced by a coating apparatus, the system comprising:

a collecting assembly for collecting the sealing water generated at the plurality of nodes of the coating apparatus, the collecting assembly including a plurality of branch pipes and a collecting tank, the plurality of branch pipes respectively collecting the sealing water at the plurality of nodes of the coating apparatus and transporting the sealing water to the collecting tank, the collecting assembly further including a main pipe connecting the plurality of branch pipes and the collecting tank, the sealing water at the plurality of nodes being converged to the main pipe via the plurality of branch pipes and transported to the collecting tank via the main pipe;

a filtering device for filtering the sealing water collected by the collecting assembly to produce filtered water, the filtering device being disposed on the main pipe;

the backflow device is used for conveying the filtered water to the coating device for recycling, and comprises a feedback pipe and a recovery pump, and the recovery pump conveys the filtered water in the collecting tank to the coating device for recycling through the feedback pipe;

clear water concentration detection means for detecting the clarity of the filtered water;

the control device comprises a controller and a switching valve, the controller is respectively connected with the clear water concentration detection device, the switching valve and the recovery pump, the switching valve is arranged in the collecting tank, the collecting tank is further connected with a sewage discharge pipe, the control device is used for receiving a detection result of the clear water concentration detection device and judging whether the clarity of the filtered water meets the water quality requirement, if yes, the controller controls the switching valve to switch to the feedback pipe to be communicated with the collecting tank and controls the recovery pump to work, so that the collecting tank enters a recovery state, the recovery pump works, and the filtered water enters the feedback pipe; if not, the collecting tank enters a sewage discharge state, the controller controls the switching valve to switch to the sewage discharge pipe to be communicated with the outside, the feedback pipe is not communicated, the recovery pump is controlled not to work, and the collecting tank is in the sewage discharge state.

2. The recycling system according to claim 1, wherein: the sealing water is generated at least by lubricating and/or cooling a driving motor of the coating device and generated after sealing and/or cooling a pump shaft.

3. The recycling system according to claim 1, wherein: the filtering device at least comprises one of a rotary disc filter, an activated carbon filter, a quartz sand filter and a porous material filter.