CN210313817U - Water circulation system for spunlace nonwoven process - Google Patents

Water circulation system for spunlace nonwoven process Download PDF

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Publication number
CN210313817U
CN210313817U CN201921014661.4U CN201921014661U CN210313817U CN 210313817 U CN210313817 U CN 210313817U CN 201921014661 U CN201921014661 U CN 201921014661U CN 210313817 U CN210313817 U CN 210313817U
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water
tank
filter
water supply
spunlace
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CN201921014661.4U
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Chinese (zh)
Inventor
赵必波
李文波
蒋渝嘉
刘林
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Sichuan Yali Technology Co Ltd
Chengdu Grace Fiber Co Ltd
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Sichuan Yali Technology Co Ltd
Chengdu Grace Fiber Co Ltd
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Abstract

The utility model discloses a water circulation system for spunlace nonwoven fabric process, which comprises a spunlace machine water supply unit, a wastewater collection unit and a wastewater treatment unit, wherein the spunlace machine water supply unit comprises a water supply tank, a primary filter, a secondary filter, a cloth bag filter and a high-pressure water tank which are connected in sequence, the water supply tank is connected with an external water source, and the high-pressure water tank is communicated with a water spray hole of the spunlace machine through a high-pressure pump; the waste water collecting unit comprises a suction tank communicated with a dewatering box of the spunlace machine and a residual water collecting tank connected with a dewatering padder; the wastewater treatment unit comprises a mixing reaction tank connected with an air floatation device, the mixing reaction tank is connected with a suction tank and a residual water collecting tank, and the air floatation device is connected with a water supply tank. The wastewater collected by the spunlace machine and the dehydration padder is treated by the wastewater treatment unit and then filtered by the water supply unit of the spunlace machine for recycling, so that the damage or maintenance of the filtering equipment caused by filtering the untreated wastewater is avoided, and the process cost is increased.

Description

Water circulation system for spunlace nonwoven process
Technical Field
The utility model relates to a water circulating system for water thorn non-woven processes, the recovery and the recycle of water resource in concretely relates to water thorn non-woven processes belongs to water treatment technical field.
Background
The spunlace non-woven process is a process of jetting a plurality of strands of fine water jets generated at high pressure on a fiber web, so that fibers in the fiber web are displaced, interpenetrated, tangled and cohered under the hydraulic action of high-speed water jet interpenetration in different directions, and a non-woven fabric with certain strength and other properties is obtained. In the spunlace process, the water needle impact fibers are formed by using extremely fine high-pressure water flow to be entangled and reinforced, so that the water quality requirement of the spunlace process is high, impurities in water are reduced as much as possible, and neutral water is preferred, so that a water filtration system is required to be adopted to filter the process water. In addition, a large amount of waste water is generated in the spunlace reinforcement process, and how to treat the waste water generated in the spunlace process and recycle the waste water after the waste water meets the requirements of the production process is also the key point in the current water treatment process.
The prior patent document CN206328269U (a circulating water treatment system for a spunlace nonwoven fabric production line, 2017.07.14) discloses that wastewater flowing out of a spunlace unit enters an ultrasonic three-stage treatment device after being treated by a steam-water separator, is subjected to three times of ultrasonic treatment and then is subjected to oil removal by an oil-water separation device, and then enters the spunlace unit for recycling after passing through a filter device comprising a double-end filter unit self-cleaning filter, a first polypropylene filter, a high-level water tank, a second polypropylene filter, a sterilization device and a high-pressure pump.
The prior patent document CN206940594U (a circulating water treatment system for spunlace nonwoven fabric production line, 2018.01.30) discloses a circulating water treatment system composed of a spunlace machine, a vacuum suction dehydrator, a primary filter, a primary air flotation tank, a secondary filter, a secondary air flotation tank and a water storage tank, which not only can realize water recycling, save and protect the environment, but also can effectively remove fiber, oil and other wastes in the water body after spunlace, improve the purity and cleanliness of the water body after treatment, and effectively reduce the probability of blockage of the spunlace needle head.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a water circulating system for water thorn non-woven processes, adopt the filterable mode of processing back earlier, increase waste water collection unit and waste water treatment unit on current water thorn machine water supply unit, collect the waste water that obtains with water thorn machine and dehydration padder and handle the back through waste water treatment unit, filter the back by water thorn machine water supply unit, the recycling is used for water thorn machine, avoid filtering untreated waste water and the damage or the maintenance of the filtration equipment that causes, improve the process cost.
The utility model discloses a following technical scheme realizes: a water circulation system for a spunlace nonwoven fabric process comprises a spunlace machine water supply unit, a wastewater collection unit and a wastewater treatment unit, wherein the spunlace machine water supply unit comprises a water supply tank, a primary filter, a secondary filter, a cloth bag filter and a high-pressure water tank which are sequentially connected, the water supply tank is connected with an external water source, and the high-pressure water tank is communicated with a water spray hole of the spunlace machine through a high-pressure pump; the waste water collecting unit comprises a suction tank communicated with a dewatering box of the spunlace machine and a residual water collecting tank connected with a dewatering padder; the wastewater treatment unit comprises a mixing reaction tank connected with an air floatation device, the mixing reaction tank is connected with a suction tank and a residual water collecting tank, and the air floatation device is connected with a water supply tank.
The first-stage filter is a metal grid sand filter, and the second-stage filter is a multi-core precision filter.
And a backwashing water pump is arranged between the water supply tank and the metal grid sand filter, and a backwashing fan is arranged on the metal grid sand filter.
And pressure difference switches are arranged on the multi-core precision filter and the cloth bag filter.
And a dosing device is arranged on the mixing reaction tank.
And a dissolved air tank is arranged on the air floatation device, and the water supply tank is connected with the dissolved air tank through a dissolved air water pump.
Compared with the prior art, the utility model, following advantage and beneficial effect have:
(1) because water quality requirement of water thorn non-woven fabrics technology in to water thorn reinforcement process is higher, can filter the back and reuse usually to water, the utility model discloses combine current water thorn water supply unit's filtration system, increased wastewater collection unit and waste water treatment unit, adopt earlier the mode of prefiltration after the centralized processing to obtain water thorn machine circulating water, on the one hand, can continue to filter with current filtration system, can avoid additionally setting up the filter and occupy the workshop area, on the other hand, avoid untreated waste water to filter the loss that causes filtering equipment, increase the maintenance cost.
(2) For improving the filtering effect, the utility model discloses in, metal grid sand filter can be adopted to the one-level filter, and the multicore precision filter can be adopted to the secondary filter, can satisfy the filtration requirement of ordinary water and processing back waste water simultaneously.
(3) The utility model discloses be provided with the feed tank in water supply unit of water thorn machine to in the storage of handling back waste water, simultaneously, outside water source is connected to the feed tank, can provide system industrial water, guarantees the continuous operation of water thorn reinforcement process.
Drawings
Fig. 1 is a schematic layout diagram of the present invention.
Fig. 2 is a process flow chart of the present invention.
The system comprises a hydro-entangled machine 1, a hydro-entangled machine 2, a hydro-entangled machine dewatering box 3, a suction tank 4, a dewatering padder 5, a residual water collecting tank 6 and a lifting pump 6.
Detailed Description
The present invention will be described in further detail with reference to examples, but the present invention is not limited thereto.
Example (b):
the spunlace reinforcement process related to the spunlace nonwoven process is a process of vertically shooting a fiber web by continuous cylindrical water needles generated by water spray holes, and enabling fibers in the fiber web to form irregular entanglement under the action of water force, so that the fiber web is reinforced to form spunlace nonwoven fabric, and therefore, a large amount of waste water is generated in the spunlace reinforcement process. The water consumption per hour of a hydro-entangling line with medium output can reach 200m under the normal condition2In order to save water, about 95% of water in the process water is treated and recycled for the spunlace reinforcement process, and meanwhile, as the water source of the process water contains impurities, and the high-pressure water can fall off the fiber web when impacting the fiber web, the impurities and short fibers can easily block the water spraying holes of the hydraulic ejector with the diameter of only 0.08-0.15mm, and the normal operation of the production is influenced. Based on this, the present embodiment proposes a water circulation system capable of simultaneously treating wastewater and industrial water.
The water circulation system belongs to a part of a spunlace nonwoven production line, is arranged in the area A shown in the figure as shown in figure 1, and comprises a water supply unit of a spunlace machine, a wastewater collection unit and a wastewater treatment unit. As shown in the structure of figure 2, the water supply unit of the spunlace machine comprises a water supply tank, a primary filter, a secondary filter, a cloth bag filter and a high-pressure water tank which are sequentially connected, wherein the water supply tank is connected with an external water source, and the high-pressure water tank is communicated with the water spraying holes of the spunlace machine 1 through a high-pressure pump. The waste water collecting unit comprises a suction tank 3 communicated with the dewatering box 2 of the spunlace machine and a residual water collecting tank 5 connected with a dewatering padder 4. The wastewater treatment unit comprises a mixing reaction tank connected with an air floatation device, the mixing reaction tank is connected with a suction tank 3 and a residual water collecting tank 5, and the air floatation device is connected with a water supply tank. When in use, a large amount of waste water generated in the spunlace reinforcement process is sent to the dewatering box 2 of the spunlace machine, collected to the suction tank 3 by the negative pressure suction system of the suction tank 3, and then sent to the mixing reaction tank by the lifting pump 6. The fiber web contains a large amount of water after being reinforced by spunlace, therefore, before drying, most of the water must be removed by a dewatering padder 4 (also can be a negative pressure suction groove), the water content is reduced, then the water is input into a drying device, and the waste water removed by the dewatering padder 4 is collected by a residual water collecting tank 5 and is sent into a mixing reaction tank by a lift pump 6.
The mixing reaction tank is provided with a dosing device, a proper amount of flocculating agent is put into the mixing reaction tank through a dosing metering pump and coagulation reaction is carried out, fine fibers in wastewater can be enabled to react with the fine fibers to form large alum flocs, liquid after reaction in the mixing reaction tank is sent to an air floatation device, such as a high-efficiency advection air floatation device, a dissolved air tank is arranged on the mixing reaction tank and is connected with a water supply tank through an air dissolving water pump, when the mixing reaction tank is used, the dissolved air tank releases fine bubbles into the air floatation device, under the action of the fine bubbles, the alum flocs formed after reaction quickly rise to the upper part of a water layer to form scum, a mud scraper can be arranged on the air floatation device, the speed of scraping is adjusted according to the scum quantity of the scum so as to effectively remove the scum, and purified water at the bottom of the high-efficiency advection air floatation. The clean water flowing into the water supply tank is pumped into a primary filter for filtration, such as a metal grid sand filter, so that suspended matters in the water can be trapped, and the turbidity of the water can be further reduced. The filtered water body enters a secondary filter, such as a multi-core precise filter, so that suspended matters larger than 25 microns in the water can be intercepted by a metal filter screen, and the turbidity and the suspended matters of the water are further reduced. The treated water enters a cloth bag filter for fine treatment, so that the maximum particle size of suspended matters in the filtered water is less than 5 mu m, and the treated water is ensured not to block the water spray holes. The treated purified water enters a high-level water tank for storage and then is sent to a spunlace machine 1 of a spunlace reinforcement process by a high-pressure pump for recycling.
In this embodiment, the feed water tank is used for collecting the water purification after waste water treatment, because it still connects outside water source, not only can filter the reuse to the production water, still can supply water circulation system's loss, during the in-service use, can set up automatic water supply device, realizes the automatic water supply of feed water tank. As shown in the structure of fig. 2, in this embodiment, a backwashing water pump is disposed between the water supply tank and the metal grid sand filter, the metal grid sand filter is backwashed by water of the water supply tank, and a backwashing fan is further disposed on the metal grid sand filter to improve the filtering effect. Pressure difference switches are arranged on the multi-core precision filter and the cloth bag filter, and when suspended matters intercepted by the system cause the pressure of inlet water and outlet water to rise to exceed a set value, an alarm is given to prompt so as to clean the filter element and the filter bag.
The above is only the preferred embodiment of the present invention, not to the limitation of the present invention in any form, all the technical matters of the present invention all fall into the protection scope of the present invention to any simple modification and equivalent change of the above embodiments.

Claims (6)

1. A water circulation system for a spunlace nonwoven process, characterized in that: the water supply unit of the spunlace machine comprises a water supply tank, a primary filter, a secondary filter, a cloth bag filter and a high-pressure water tank which are sequentially connected, wherein the water supply tank is connected with an external water source, and the high-pressure water tank is communicated with a water spray hole of the spunlace machine (1) through a high-pressure pump; the waste water collecting unit comprises a suction tank (3) communicated with the dewatering box (2) of the spunlace machine and a residual water collecting tank (5) connected with a dewatering padder (4); the wastewater treatment unit comprises a mixing reaction tank connected with an air floatation device, the mixing reaction tank is connected with a suction tank (3) and a residual water collecting tank (5), and the air floatation device is connected with a water supply tank.
2. A water circulation system for use in a hydroentangled nonwoven process according to claim 1, characterized in that: the first-stage filter is a metal grid sand filter, and the second-stage filter is a multi-core precision filter.
3. A water circulation system for use in a hydroentangled nonwoven process according to claim 2, characterized in that: and a backwashing water pump is arranged between the water supply tank and the metal grid sand filter, and a backwashing fan is arranged on the metal grid sand filter.
4. A water circulation system for use in a hydroentangled nonwoven process according to claim 2, characterized in that: and pressure difference switches are arranged on the multi-core precision filter and the cloth bag filter.
5. A water circulation system for use in a hydroentangled nonwoven process according to claim 1, characterized in that: and a dosing device is arranged on the mixing reaction tank.
6. A water circulation system for use in a hydroentangled nonwoven process according to claim 1, characterized in that: and a dissolved air tank is arranged on the air floatation device, and the water supply tank is connected with the dissolved air tank through a dissolved air water pump.
CN201921014661.4U 2019-07-02 2019-07-02 Water circulation system for spunlace nonwoven process Active CN210313817U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201921014661.4U CN210313817U (en) 2019-07-02 2019-07-02 Water circulation system for spunlace nonwoven process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201921014661.4U CN210313817U (en) 2019-07-02 2019-07-02 Water circulation system for spunlace nonwoven process

Publications (1)

Publication Number Publication Date
CN210313817U true CN210313817U (en) 2020-04-14

Family

ID=70147929

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201921014661.4U Active CN210313817U (en) 2019-07-02 2019-07-02 Water circulation system for spunlace nonwoven process

Country Status (1)

Country Link
CN (1) CN210313817U (en)

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