CN214168574U - Recycling system of papermaking plain boiled water - Google Patents
Recycling system of papermaking plain boiled water Download PDFInfo
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- CN214168574U CN214168574U CN202022392721.5U CN202022392721U CN214168574U CN 214168574 U CN214168574 U CN 214168574U CN 202022392721 U CN202022392721 U CN 202022392721U CN 214168574 U CN214168574 U CN 214168574U
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Abstract
The utility model discloses a recycling system of papermaking white water, which comprises an operation water tower and an operation water recovery tank, wherein the operation water tower is used for storing vacuum water of felt of a press part of a paper machine and recycling the white water; the top water supply port of the operating water tower is connected with an operating water inlet pipe for conveying paper machine coarse cotton vacuum water and recycling white water; the operation water recovery tank is connected with a sewage recovery pipe which is respectively connected with sewage generated by each paper machine; a white water recovery tank, a white water pump and a water ring vacuum pump are respectively arranged at each paper machine, and the recycled white water is supplied to the water ring vacuum pump for vacuum paper making of the paper machine through a white water supply pipe; the height difference between the branch water inlet pipes of the water-ring vacuum pumps corresponding to the highest liquid level of the operation water tower is 4-5 m, the pressure difference between the working liquid level of the operation water tower and the corresponding water-ring vacuum pumps is increased, the water drawing pressure of the corresponding water-ring vacuum pumps is increased, and unstable operation water pressure and large fluctuation of the vacuum of the water-ring vacuum pumps are avoided.
Description
[ technical field ] A method for producing a semiconductor device
The utility model relates to a production technology of papermaking especially relates to a cyclic utilization system of papermaking plain boiled water.
[ background of the invention ]
With the rapid development of the pulping and papermaking industry, the requirements on the resource utilization and pollution of the pulping and papermaking industry are correspondingly improved; it is known that the pulp and paper industry is a large industry with natural resource energy consumption and environmental pollution, and water pollution is the most important pollution of the pulp and paper industry. Therefore, how to recycle water resources becomes a problem which is urgently concerned by the paper industry. From the current state of the art international developments, it is more feasible to implement a closed white water circulation in the white water system of a paper machine.
The method of recovering the solid material from the white water exhausted from the paper making machine directly or through a white water recovering device and returning the recovered material to the paper making machine system for utilization is called as closed circulation of the white water; in the process of recycling the white water, certain use principles should be observed, namely, the white water should be reasonably and optimally distributed and used on the premise of ensuring the normal operation of a paper machine and the quality and quantity of water used by each part.
At present, when white water returns to a paper machine system, each paper machine sucks water to an operation water tank for supplying the white water through a water ring vacuum pump, wherein the operation water tank is used for collecting part of operation water of the paper machine for recycling, and is used for ensuring normal use of the operation water of the water ring vacuum pump; however, when the water-saving device is used, a certain amount of white water still exists in the operation water tank, the vacuum of the water-ring vacuum pump corresponding to a part of the paper machine is greatly fluctuated, paper breaking of the paper machine is finally caused, production of a production line is influenced, and the production line is directly stopped; meanwhile, as the field pipeline is complex, and under the condition that white water is supplied in the operation water tank, field maintenance personnel cannot find out what causes the vacuum of the water-ring vacuum pump to fluctuate greatly, the problem that part of paper machines corresponding to the water-ring vacuum pump fluctuate occasionally can not be solved effectively, and continuous and reliable stable production of a paper making production line can not be guaranteed effectively.
[ Utility model ] content
The utility model provides a simple structure, control is convenient, to the liquid level effective monitoring in the basin and in time supply the basin in the plain boiled water volume, improves the papermaking plain boiled water's of job stabilization nature and reliability cyclic utilization system.
The utility model provides a technical scheme that its technical problem adopted is:
a papermaking white water recycling system comprises an operation water tower and an operation water recovery tank, wherein the operation water tower and the operation water recovery tank are respectively arranged in a papermaking workshop, and the operation water tower is used for storing vacuum water of felt at a press part of a paper machine and recycling white water;
the top water supply port of the operating water tower is connected with a paper feeder felt vacuum water and an operating water inlet pipe for recycling white water, and the bottom of the operating water tower is connected with a white water supply pipe for continuously supplying the white water to the water ring vacuum pump;
the operation water recovery tank is connected with a sewage recovery pipe which is respectively connected with sewage generated by each paper machine and is used for recovering the sewage generated in the paper making process;
a white water recovery tank, a white water pump and a water ring vacuum pump are respectively arranged at each paper machine, the recycled white water and the vacuum water of the felt at the squeezing part of the paper machine are conveyed to an operation water tower through the white water pump and an operation water inlet pipe, the recycled white water is supplied to the water ring vacuum pump for paper making of the paper machine through a white water supply pipe, and the water ring vacuum pump simultaneously and respectively discharges the sewage generated by paper making of the paper machine into the operation water recovery tank through a sewage recovery pipe;
the height difference between the highest liquid level of the operating water tower and a branch water inlet pipe of the corresponding water ring vacuum pump at each paper machine is 4-5 m; the water ring vacuum pump is used for improving the pressure difference between the working liquid level of the operating water tower and the corresponding water ring vacuum pump at each paper machine, improving the water drawing pressure of the corresponding water ring vacuum pump at each paper machine, and avoiding unstable operating water pressure and large fluctuation of the vacuum of the water ring vacuum pump.
Furthermore, a liquid level meter for detecting the lowest liquid level in the tower body and supplying white water to the tower body after timely alarming is further arranged in the operating water tower, and the alarming height of the liquid level meter at the lowest liquid level in the operating water tower is not lower than 1.2 meters. Through the level gauge, can in time switch make-up water, ensure that water pressure is invariable. The condition that the pressure difference reaches a critical point at the lowest liquid level is avoided, the operation water pressure is unstable, the vacuum of the water-ring vacuum pump fluctuates greatly, and finally paper breaking of a paper machine is caused to influence the papermaking production.
Furthermore, stop valves for controlling the on-off of the pipeline and facilitating the maintenance of the paper machine are respectively arranged on branch pipelines of the white water supply pipe and the sewage recovery pipe which are connected with the water feeding ring vacuum pump of each paper machine.
Further, the operation water tower is including the pond chamber that is located bottom lower part and the tower body chamber of accepting in pond chamber upside, and the top cap is installed on the top of tower body chamber, operation inlet tube connects in the pond chamber lateral wall department of operation water tower bottom.
Furthermore, the top of the water tank cavity beside the upper tower body cavity of the operating water tower is also connected with a defoaming adding pipe for adding a defoaming agent into the operating water tower.
Further, the top cover of the operation water tower is also connected with an exhaust pipe for discharging pressure and gas in the tower body.
The utility model has the advantages that:
the method aims at solving the problem that in the prior art, a communicating pipe is arranged at the bottom of an operation water tank, respective water ring vacuum pumps of a plurality of paper machines use white water of the operation water tank, the height of the operation water tank is close to that of each water ring vacuum pump, and the height from the top to the bottom of the operation water tank is only about 1.2 meters, so that the operation water pressure conveyed to the water ring vacuum pumps is unstable due to low pressure difference of the height of the operation water tank and frequent fluctuation of liquid level in the operation water tank, especially when the pressure difference reaches a critical point, the vacuum of partial water ring vacuum pumps at the far part of a pipeline fluctuates greatly, and the final paper breaking of the paper machines is further caused.
The utility model discloses in, be located the pond chamber of end lower part and accept the operation water tower in pond chamber upper side tower body chamber through the setting, compare current operation basin, two cavitys of operation water tower have increased the capacity of operating water, can the undulant influence of effectual reduction water yield.
Meanwhile, the tower body cavity added on the water tower is operated, so that the height difference between the highest liquid level and the branch water inlet pipe of the water-ring vacuum pump corresponding to each paper machine is 4-5 m, the pressure difference between the working liquid level of the operation water tower and the water-ring vacuum pump corresponding to each paper machine can be increased, the water drawing pressure of the water-ring vacuum pump corresponding to each paper machine is increased, and unstable operation water pressure and large fluctuation of the vacuum of the water-ring vacuum pump are avoided.
In addition, a liquid level meter for detecting the lowest liquid level in the tower body and supplying white water to the tower body after timely alarming is arranged in the operating water tower, and the alarming height of the liquid level meter at the lowest liquid level in the operating water tower is not lower than 1.2 meters. The condition that the pressure difference reaches the critical point at the lowest liquid level is avoided, and the water can be timely switched on and off through the liquid level meter, so that the constant water pressure is ensured. And the blast pipe of connecting on the top cap of operation water tower effectively prevents the negative pressure condition that appears when the moisturizing in the tower body because the pressure extraction gassing is untimely.
[ description of the drawings ]
Fig. 1 is a schematic diagram of the system structure of the present invention;
FIG. 2 is an enlarged schematic view of the operation water tank of the present invention;
fig. 3 is a schematic view of a prior art sink structure.
[ detailed description ] embodiments
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
A system for recycling paper making white water, as shown in fig. 2 and fig. 3, comprises an operation water tower 1 and an operation water recovery tank 2, wherein the operation water tower 1 and the operation water recovery tank 2 are respectively arranged in a paper making workshop, the operation water tower 1 is used for storing felt vacuum water and recycled white water of a press part of six paper machines (not shown); the operation water tower 1 comprises a water tank cavity 10 positioned at the lower part of the bottom and a tower body cavity 11 connected with the upper side of the water tank cavity 10, the top end of the tower body cavity 11 is provided with a top cover 3, the top cover 3 of the operation water tower 1 is connected with an operation water inlet pipe 4 for continuously supplying vacuum water for conveying paper machine coarse cotton cloth and recycling white water into the tower body and an exhaust pipe 5 for exhausting and exhausting air in the tower body, and the bottom of the water supply port at the side wall of the water tank cavity 10 at the bottom of the operation water tower 1 is connected with a white water supply pipe 6 for continuously supplying the white water to a water ring vacuum pump; the top of the water tank cavity 10 beside the tower body cavity 11 on the operation water tower 1 is also connected with a defoaming adding pipe 7 for adding a defoaming agent into the operation water tower 1.
As shown in fig. 2 and fig. 3, the operation water recovery tank 2 is connected to a sewage recovery pipe 8 which is connected to the sewage generated by each paper machine and is used for recovering the sewage generated in the paper making process, a white water recovery tank (not shown), a white water pump (not shown) and a water ring vacuum pump 9 are respectively arranged at each paper machine, the recovered white water and the felt vacuum water of the press part of the paper machine are conveyed to the operation water tower 1 through the white water pump and the operation water inlet pipe, the recovered white water is supplied to the water ring vacuum pump 9 for paper making of the paper machine through the white water supply pipe 6, and the water ring vacuum pump 9 simultaneously discharges the sewage generated in the paper making process to the operation water recovery tank 2 through the sewage recovery pipe 8.
Wherein, the height difference between the highest liquid level of the operation water tower 1 and the branch water inlet pipe of the corresponding water ring vacuum pump 9 at each paper machine is 4-5 m; the water-ring vacuum pump device is used for improving the pressure difference between the working liquid level of the operation water tower 1 and the corresponding water-ring vacuum pump 9 at each paper machine, improving the water drawing pressure of the corresponding water-ring vacuum pump 9 at each paper machine, and avoiding unstable operation water pressure and large fluctuation of the vacuum of the water-ring vacuum pump 9.
In addition, a liquid level meter (not shown) for detecting the lowest liquid level in the tower body and supplying white water to the tower body after timely alarming is also arranged in the operation water tower 1, and the alarming height of the liquid level meter at the lowest liquid level in the operation water tower 1 is not lower than 1.2 meters. The liquid level meter can timely switch on and off the make-up water to ensure the constant water pressure; the condition that the pressure difference reaches a critical point at the lowest liquid level is avoided, the operation water pressure is unstable, the vacuum of the water ring vacuum pump 9 fluctuates greatly, and finally paper breaking of a paper machine is caused to influence the papermaking production.
As shown in fig. 2, stop valves 12 for controlling the opening and closing of the pipeline and facilitating the maintenance of the paper machine are respectively provided on branch pipelines connecting the white water supply pipe 4 and the sewage recovery pipe 8 with the water ring vacuum pump 9 on each paper machine.
In view of the prior art, as shown in fig. 3, in the operation water tank 13, one communicating pipe is arranged at the bottom of the operation water tank 13, and the respective water-ring vacuum pumps of a plurality of paper machines use the white water of one operation water tank 13, because the height of the operation water tank 13 is close to that of each water-ring vacuum pump, and the height from the top to the bottom of the operation water tank is only about 1.2 meters, because the height of the operation water tank 13 is low and the liquid level in the operation water tank 13 fluctuates frequently, the operation water pressure conveyed to the water-ring vacuum pumps is unstable, especially when the pressure difference reaches a critical point, the vacuum of a part of the water-ring vacuum pumps at the far position of the pipeline fluctuates greatly, and the final paper breaking problem of the paper machines is caused, and the continuous and reliable operation of the production cannot be ensured.
The utility model discloses in, through setting up the operation water tower 1 that is located the pond chamber 10 of bottom lower part and accepts in pond chamber 10 upside tower body chamber 11, compare current operation basin, two cavitys of operation water tower 1 have increased the capacity of operating water, can the undulant influence of effectual reduction water yield. And, the tower body cavity 11 that increases on the operation water tower 1 for the difference in height between the branch inlet tube that corresponds water ring vacuum pump 9 in highest liquid level and every paper machine department is 4 ~ 5 meters, and like this, can improve the pressure differential between the water ring vacuum pump 9 that corresponds in operation water tower 1 work liquid level and every paper machine department, improve the water-drawing pressure of the water ring vacuum pump 9 that corresponds in every paper machine department, avoid operation water pressure unstability and the vacuum of water ring vacuum pump 9 to appear fluctuating by a wide margin, effectively avoid the paper machine to cause the paper break, influence production line production, improve the reliability of paper machine production line.
In the description of the present invention, it should be noted that the terms "top" and "bottom" are used for indicating the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship that the utility model is used to place conventionally, and are only for convenience of describing the present invention and simplifying the description, but not for indicating or implying that the device or element to be referred must have a specific position, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
The above-mentioned embodiments are only preferred embodiments of the present invention, not limiting the scope of the present invention, and all equivalent changes made by the shape, structure and principle of the present invention should be covered by the protection scope of the present invention.
Claims (6)
1. A papermaking white water recycling system comprises an operation water tower and an operation water recovery tank, wherein the operation water tower and the operation water recovery tank are respectively arranged in a papermaking workshop, and the operation water tower is used for storing vacuum water of felt at a press part of a paper machine and recycling white water; the method is characterized in that:
the top water supply port of the operating water tower is connected with a paper feeder felt vacuum water and an operating water inlet pipe for recycling white water, and the bottom of the operating water tower is connected with a white water supply pipe for continuously supplying the white water to the water ring vacuum pump;
the operation water recovery tank is connected with a sewage recovery pipe which is respectively connected with sewage generated by each paper machine and is used for recovering the sewage generated in the paper making process;
a white water recovery tank, a white water pump and a water ring vacuum pump are respectively arranged at each paper machine, the recycled white water and the vacuum water of the felt at the squeezing part of the paper machine are conveyed to an operation water tower through the white water pump and an operation water inlet pipe, the recycled white water is supplied to the water ring vacuum pump for paper making of the paper machine through a white water supply pipe, and the water ring vacuum pump simultaneously and respectively discharges the sewage generated by paper making of the paper machine into the operation water recovery tank through a sewage recovery pipe;
the height difference between the highest liquid level of the operating water tower and the branch water inlet pipe of each paper machine corresponding to the water ring vacuum pump is 4-5 m.
2. A system for recycling papermaking white water according to claim 1, characterized in that: the operating water tower is also internally provided with a liquid level meter which is used for detecting the lowest liquid level in the tower body and supplying white water to the tower body after timely alarming, and the alarming height of the liquid level meter at the lowest liquid level in the operating water tower is not lower than 1.2 meters.
3. A system for recycling papermaking white water according to claim 1, characterized in that: and stop valves for controlling the on-off of the pipeline and facilitating the maintenance of the paper machine are respectively arranged on branch pipelines connected with the white water supply pipe and the sewage recovery pipe and the water feeding ring vacuum pump of each paper machine.
4. A system for recycling papermaking white water according to claim 1, characterized in that: the operation water tower is including the pond chamber that is located bottom lower part and the tower body chamber of accepting in pond chamber upside, and the top cap is installed on the top in tower body chamber, operation inlet tube connects in the pond chamber lateral wall department of operation water tower bottom.
5. A system for recycling papermaking white water according to claim 1, characterized in that: and the top of the water tank cavity beside the upper tower body cavity of the operation water tower is also connected with a defoaming adding pipe for adding a defoaming agent into the operation water tower.
6. A recycling system of papermaking white water according to claim 1 or 4, characterized in that: and the top cover of the operation water tower is also connected with an exhaust pipe for discharging pressure and gas in the tower body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022392721.5U CN214168574U (en) | 2020-10-23 | 2020-10-23 | Recycling system of papermaking plain boiled water |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022392721.5U CN214168574U (en) | 2020-10-23 | 2020-10-23 | Recycling system of papermaking plain boiled water |
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| Publication Number | Publication Date |
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| CN214168574U true CN214168574U (en) | 2021-09-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022392721.5U Active CN214168574U (en) | 2020-10-23 | 2020-10-23 | Recycling system of papermaking plain boiled water |
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- 2020-10-23 CN CN202022392721.5U patent/CN214168574U/en active Active
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