CN218508122U - Zero discharge system of pre-coating and intermediate-coating waste water - Google Patents
Zero discharge system of pre-coating and intermediate-coating waste water Download PDFInfo
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- CN218508122U CN218508122U CN202222618571.4U CN202222618571U CN218508122U CN 218508122 U CN218508122 U CN 218508122U CN 202222618571 U CN202222618571 U CN 202222618571U CN 218508122 U CN218508122 U CN 218508122U
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Abstract
The utility model discloses a zero discharge system for pre-coating and intermediate-coating wastewater, which comprises a pre-coating unit, an intermediate-coating unit, a vibrating screen, a wastewater recovery tank and a water pump which are connected in sequence; the precoating unit comprises a precoating preparation tank, a precoating storage tank, a first discharging pump, a precoating feeding tank, a second discharging pump, a precoating pressure screen and a precoating coating head which are sequentially connected; the midway unit comprises a middle coating preparation tank, a middle coating storage tank, a third discharge pump, a middle coating feeding tank, a fourth discharge pump, a middle coating pressure screen and a middle coating head which are connected in sequence; and the sewage discharge pipeline of the precoating unit and the sewage discharge pipeline of the intermediate coating unit are respectively connected to the vibrating screen. When the device is in actual use, the waste water generated by the pre-coating unit and the middle coating unit is discharged to the vibrating screen and can be recycled after being treated, so that the purposes of energy conservation, environmental protection and clean production are achieved.
Description
Technical Field
The utility model relates to the technical field of papermaking, in particular to zero discharge system of waste water of precoating and floating coat.
Background
The white board front side usually requires operations such as pre-coating and intermediate coating. When paper breaking, stopping or quality abnormality occurs, a certain amount of waste water is discharged, and in addition, a certain amount of waste water is discharged when equipment is cleaned regularly. In the prior art, the waste water is directly discharged, sent to a waste water treatment section of a factory for centralized treatment and then discharged. However, this may cause waste water leakage, which may cause safety and environmental accidents, and also increase the cost of waste water treatment, wasting valuable water resources. In view of above technical problem, the utility model provides a zero discharge system of waste water precoating and floating coat can carry out recycle to the waste water that precoating process and floating coat process produced, reaches energy-concerving and environment-protective purpose.
It is seen that improvements and enhancements to the prior art are needed.
SUMMERY OF THE UTILITY MODEL
In view of the defects of the prior art, the utility model aims to provide a zero discharge system for precoating and intermediate coating waste water, which aims to solve the technical problem that the waste water generated by the precoating process and the intermediate coating process in the prior art can not be recycled.
In order to achieve the purpose, the utility model adopts the following technical proposal:
a zero-discharge system for pre-coating and intermediate-coating wastewater comprises a pre-coating unit, an intermediate-coating unit, a vibrating screen, a wastewater recovery tank and a water pump which are sequentially connected; the precoating unit comprises a precoating preparation tank, a precoating storage tank, a first discharge pump, a precoating feed tank, a second discharge pump, a precoating pressure screen and a precoating coating head which are sequentially connected; the midway unit comprises a middle coating preparation tank, a middle coating storage tank, a third discharge pump, a middle coating feeding tank, a fourth discharge pump, a middle coating pressure screen and a middle coating head which are connected in sequence; the sewage discharge pipeline of the pre-coating unit and the sewage discharge pipeline of the middle coating unit are respectively connected to the vibrating screen; the outlet pipe of the water pump is provided with two branch pipes, one of which is connected to the pre-preparation tank, and the other of which is connected to the intermediate preparation tank.
Furthermore, in the zero discharge system for pre-coating and intermediate-coating wastewater, the sewage discharge pipeline of the pre-coating unit comprises a sewage discharge pipe of the pre-coating preparation tank, a sewage discharge pipe of the pre-coating feed tank and a sewage discharge pipe of the pre-coating head.
Further, in the zero discharge system of pre-coating and middle-coating wastewater, the sewage discharge pipeline of the middle-coating unit comprises a sewage discharge pipe of the middle-coating preparation tank, a sewage discharge pipe of the middle-coating feeding tank and a sewage discharge pipe of the middle-coating head.
Furthermore, in the pre-coating and intermediate-coating wastewater zero discharge system, an outlet pipeline of the pre-coating preparation tank is connected to an inlet end of the pre-coating storage tank, and one end of a drain pipe of the pre-coating preparation tank is connected to the outlet pipeline of the pre-coating preparation tank; an outlet pipeline of the intermediate coating preparation tank is connected to the inlet end of the intermediate coating storage tank, and one end of a sewage discharge pipe of the intermediate coating preparation tank is connected to the outlet pipeline of the intermediate coating preparation tank.
Furthermore, in the pre-coating and intermediate-coating wastewater zero discharge system, a return pipe of the pre-coating head is connected to the pre-coating preparation tank, and one end of a drain pipe of the pre-coating head is connected to the return pipe of the pre-coating head; the return pipe of the middle coating head is connected to the middle coating preparation tank, and one end of the drain pipe of the middle coating head is connected to the return pipe of the middle coating head.
Further, in the pre-coating and intermediate-coating wastewater zero discharge system, the water pump is a centrifugal pump.
Furthermore, in the pre-coating and intermediate coating wastewater zero discharge system, the flow rate of a water pump is not lower than 20m 3 /h。
Furthermore, in the pre-coating and intermediate-coating wastewater zero discharge system, a filter is arranged on an outlet pipeline of the water pump.
Furthermore, in the pre-coating and middle-coating wastewater zero discharge system, the filtering precision of the filter is not less than 400 meshes.
Furthermore, in the pre-coating and intermediate coating wastewater zero discharge system, the volume of the wastewater recovery tank is not less than 40 cubic meters.
Has the beneficial effects that: the utility model provides a zero discharge system of waste water is precoated and scribbled, compare prior art, through setting up the shale shaker, the wastewater recovery groove, and equipment such as water pump, can be to precoating the preparation groove, the feeder bowl is precoated, the pressurized screen precoated, in scribble the preparation groove, in scribble the feeder bowl, and in scribble the waste water in the pressurized screen and arrange the shale shaker into through corresponding the blow off pipe respectively, waste water after the shale shaker is handled gets into the wastewater recovery groove, then by water pump output, after the filter filters, the recycle in the preparation groove is precoated and the preparation groove is scribbled respectively to the subdividing, thereby realized the "zero release" of waste water, and saved a large amount of clear water, energy-concerving and environment-protective, cleaner production's purpose has been reached.
Drawings
FIG. 1 is a schematic block diagram of a zero discharge system for pre-coating and intermediate-coating wastewater provided by the present invention.
Detailed Description
The utility model provides a zero discharge system of waste water is precoated and scribbled, for making the utility model discloses a purpose, technical scheme and effect are clearer, more clear and definite, and is following right the utility model discloses further detailed description. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
Referring to fig. 1, the utility model provides a zero discharge system for pre-coating and intermediate coating wastewater. In order to make the drawings simple and easy to read, the drawings only draw structures related to the utility model, and the structural drawings of pipelines, valves and the like which are arranged conventionally are not drawn or marked one by one any more. For ease of viewing, the various waste pipes in the drawings are shown in phantom (in other words, although shown in phantom, they represent the actual existing pipes). The arrows indicate the normal course of the liquid into the pipe.
The precoating and intermediate coating wastewater zero discharge system comprises a precoating unit, an intermediate coating unit, a vibrating screen 31, a wastewater recovery tank 32 and a water pump 33 which are sequentially connected; the precoating unit comprises a precoating preparation tank 11, a precoating storage tank 12, a first discharge pump 13, a precoating feed tank 14, a second discharge pump 15, a precoating pressure screen 16 and a precoating coating head 17 which are connected in sequence; the midway unit comprises a middle coating preparation tank 21, a middle coating storage tank 22, a third discharge pump 23, a middle coating supply tank 24, a fourth discharge pump 25, a middle coating pressure screen 26 and a middle coating head 27 which are connected in sequence; the sewage discharge pipeline of the pre-coating unit and the sewage discharge pipeline of the middle coating unit are respectively connected to the vibrating screen; the outlet pipe arrangement 300 of the water pump has two branches, one of which 301 is connected to the pre-preparation tank and the other to the intermediate preparation tank 302.
Further, the drain line of the precoating unit includes a drain 411 of the precoating preparation tank, a drain 421 of the precoating feed tank, and a drain 431 of the precoating coating head. The arrangement is convenient for discharging the waste water in the pre-coating preparation tank, the pre-coating feeding tank and the pre-coating head to the vibrating screen respectively.
Further, the drain pipe of the floating coat unit includes a drain pipe 421 of the floating coat preparation tank, a drain pipe 422 of the floating coat supply tank, and a drain pipe 423 of the floating coat coating head. The arrangement is convenient for discharging the waste water in the middle coating preparation tank, the middle coating feed tank and the middle coating head to the vibrating screen respectively.
Further, an outlet pipeline 111 of the pre-coating preparation tank is connected to an inlet end of the pre-coating storage tank, and one end of a drain pipe of the pre-coating preparation tank is connected to the outlet pipeline of the pre-coating preparation tank; the outlet pipe 211 of the midcoat preparation tank is connected to the inlet end of the midcoat storage tank, and one end of the drain pipe of the midcoat preparation tank is connected to the outlet pipe of the midcoat preparation tank.
Specifically, the return pipe 171 of the precoating head is connected to the precoating preparation tank, and one end of the drain pipe of the precoating head is connected to the return pipe of the precoating head; the return pipe 271 of the middle coating head is connected to the middle coating preparation tank, and one end of the drain pipe of the middle coating head is connected to the return pipe of the middle coating head.
Preferably, the water pump is a centrifugal pump.
Preferably, the flow rate of the water pump is not lower than 20m 3 /h。
Further, a filter 34 is provided on an outlet pipe of the water pump, and the recycled waste water is filtered and then sent to the pre-coating preparation tank and the intermediate coating preparation tank, respectively.
Preferably, the filter 34 has a filtering accuracy of not less than 400 mesh.
Preferably, the volume of the wastewater reclamation tank is not less than 40 cubic meters.
For ease of understanding, the working principle is briefly described below.
And under the normal working state, the valves on the sewage pipes are closed. Take the precoating unit as an example: the coating raw material and water are mixed and stirred in the pre-coating preparation process, then the mixture is sent into a pre-coating storage tank and then sent into a pre-coating feeding tank, the mixture is sent into a pre-coating pressure sieve after being stirred and then enters a pre-coating head, and redundant coating returns to the pre-coating feeding tank along a return pipe of the pre-coating head. The material direction of the middle coating unit is similar, and the description is omitted.
After shutdown and cleaning, the corresponding valves on the drain pipes are opened, (correspondingly, the valves on the outlet pipeline of the pre-coating preparation tank, the outlet pipeline of the pre-coating feeding tank, the valves on the outlet pipeline of the middle coating preparation tank and the valves on the outlet pipeline of the middle coating feeding tank are in a closed state), wastewater in the pre-coating preparation tank, the pre-coating feeding tank, the pre-coating pressure sieve, the middle coating preparation tank, the middle coating feeding tank and the middle coating pressure sieve is respectively discharged into the vibrating sieve through the corresponding drain pipes, the wastewater treated by the vibrating sieve enters the wastewater recovery tank, is then output by the water pump, is filtered by the filter and then is respectively sent into the pre-coating preparation tank and the middle coating preparation tank for recycling (namely serving as the function of clean water), so that the zero emission of the wastewater is realized, a large amount of clean water is saved, and the purposes of energy conservation, environmental protection and clean production are achieved.
It is understood that equivalent substitutions or changes can be made by those skilled in the art according to the technical solution of the present invention and the inventive concept thereof, and all such changes or substitutions shall fall within the scope of the present invention.
Claims (10)
1. A zero discharge system of pre-coating and intermediate-coating wastewater comprises a pre-coating unit and an intermediate-coating unit, and is characterized by also comprising a vibrating screen, a wastewater recovery tank and a water pump which are connected in sequence; the precoating unit comprises a precoating preparation tank, a precoating storage tank, a first discharging pump, a precoating feeding tank, a second discharging pump, a precoating pressure screen and a precoating coating head which are sequentially connected; the midway unit comprises a middle coating preparation tank, a middle coating storage tank, a third discharge pump, a middle coating feeding tank, a fourth discharge pump, a middle coating pressure screen and a middle coating head which are connected in sequence; the sewage discharge pipeline of the pre-coating unit and the sewage discharge pipeline of the middle coating unit are respectively connected to the vibrating screen; the outlet pipe of the water pump is provided with two branch pipes, one of which is connected to the pre-preparation tank, and the other of which is connected to the intermediate preparation tank.
2. The pre-and mid-coat wastewater zero discharge system of claim 1, wherein the blowdown line of the pre-coat unit comprises a blowdown of the pre-coat preparation tank, a blowdown of the pre-coat feed tank, and a blowdown of the pre-coat coating head.
3. The zero discharge pre-and floating finishing wastewater system of claim 1, wherein the blowdown line of the floating finishing unit comprises a blowdown line of the floating finishing tank, a blowdown line of the floating finishing feed tank, and a blowdown line of the floating finishing applicator head.
4. The system for zero discharge of pre-and floating-coating waste water of claim 1, wherein the outlet conduit of the pre-coating preparation tank is connected to the inlet end of the pre-coating storage tank, and one end of the blowdown pipe of the pre-coating preparation tank is connected to the outlet conduit of the pre-coating preparation tank; an outlet pipeline of the intermediate coating preparation tank is connected to the inlet end of the intermediate coating storage tank, and one end of a sewage discharge pipe of the intermediate coating preparation tank is connected to the outlet pipeline of the intermediate coating preparation tank.
5. The system for zero discharge of pre-and floating-coating wastewater as claimed in claim 1, characterized in that the return pipe of the pre-coating head is connected to the pre-coating preparation tank, one end of the blowdown pipe of the pre-coating head is connected to the return pipe of the pre-coating head; the return pipe of the middle coating head is connected to the middle coating preparation tank, and one end of the drain pipe of the middle coating head is connected to the return pipe of the middle coating head.
6. The zero discharge pre-and floating coating wastewater system of claim 1, characterized in that the water pump is a centrifugal pump.
7. The system for zero discharge of pre-and floating coating waste water of claim 1, characterized in that the flow rate of the water pump is not lower than 20m 3 /h。
8. The zero discharge pre-and floating and finishing wastewater system according to claim 1, characterized in that the outlet pipe of the water pump is provided with a filter.
9. The pre-and floating and finishing wastewater zero discharge system of claim 8, wherein the filter has a filtration accuracy of not less than 400 mesh.
10. The pre-and floating and finishing wastewater zero discharge system of claim 1, wherein the wastewater recovery tank has a volume of not less than 40 cubic meters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222618571.4U CN218508122U (en) | 2022-09-29 | 2022-09-29 | Zero discharge system of pre-coating and intermediate-coating waste water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222618571.4U CN218508122U (en) | 2022-09-29 | 2022-09-29 | Zero discharge system of pre-coating and intermediate-coating waste water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218508122U true CN218508122U (en) | 2023-02-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222618571.4U Active CN218508122U (en) | 2022-09-29 | 2022-09-29 | Zero discharge system of pre-coating and intermediate-coating waste water |
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| Country | Link |
|---|---|
| CN (1) | CN218508122U (en) |
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- 2022-09-29 CN CN202222618571.4U patent/CN218508122U/en active Active
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