Non-woven fiber post-processing device with switching function

Abstract

The non-woven fiber post-treatment device with the switching function comprises a base, a protective frame plate is arranged above the top of the base, an acid pickling circulation tank and an oil agent circulation tank are installed at the two ends of the top of the base respectively, and a dilute acid blending pump is arranged in the middle of the acid pickling circulation tank and the middle of the oil agent circulation tank; a discharge pipe is mounted at the top output end of the dilute acid blending pump in a threaded manner; and a suction pipe is mounted on the front side of the dilute acid blending pump in a threaded manner. Through the dilute acid blending pump, the three-way pipe, and the first conveying pipe and the second conveying pipe which are controlled by the first stop valve and the second stop valve, rapid switching and accurate PH regulation and control of the HT / NW production process are realized; meanwhile, an automatic closed-loop control system of the PH and the concentration of the oiling agent is constructed by virtue of a PH sensor, a dilute acid metering pump, an alkali liquor metering pump, a densimeter and a liquid supplementing metering pump on the oiling agent circulating tank, so that the problem of low foam value of a finished product caused by unstable emulsification of the oiling agent is fundamentally solved, and the production efficiency is remarkably improved by reducing shutdown adjustment.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of non-woven fibers, and particularly relates to a non-woven fiber post-processing device with a switching function. BACKGROUND

[0002] With the progress of society, people's requirements for textile products are not only limited to warmth and durability, but also focus on aesthetics and comfort, which greatly promotes the development of viscose fibers in the differentiation field. Non-woven fiber is one of them. NW cellulose fiber is the main material for producing non-woven fabric at present, and is widely used in medical, catering, clothing and other fields with high cleanliness and hygiene requirements. Low odor NW cellulose fiber is a further optimization of NW products to seize a share of high-end products.

[0003] The existing non-woven fiber post-processing device cannot flexibly switch production processes, and the oil circulating system lacks precise automatic control of PH value and concentration, resulting in low efficiency and poor stability of process parameter adjustment when producing different products (such as HT and NW), frequent shutdown, slow production rhythm (low yield), and poor oil emulsification effect directly leading to low foam value of finished products.

[0004] At the same time, if the pickling circulating tank is not cleaned regularly, impurities, crystals and algae accumulated in the tank wall and pipeline will block the spray nozzles, resulting in uneven cleaning, affecting the whiteness and cleanliness of the fiber, and also polluting the fresh acid liquid, changing its effective concentration and PH value, further exacerbating product quality decline, energy consumption increase and equipment corrosion risk, eventually forming a vicious cycle, seriously restricting production continuity and product consistency. SUMMARY

[0005] The purpose of the present application is to provide a non-woven fiber post-processing device with a switching function. The present application realizes the rapid switching of HT / NW production process and the precise control of PH value through a dilute acid dispensing pump, a three-way pipe, and a first delivery pipe and a second delivery pipe controlled by a first stop valve and a second stop valve. At the same time, an automatic closed-loop control system of oil PH and concentration is constructed by relying on the PH sensor on the oil circulating tank, the dilute acid metering pump, the alkali metering pump, the density meter and the liquid supplementing metering pump, which fundamentally solves the problem of low foam value of finished products caused by unstable oil emulsification and significantly improves production efficiency by reducing shutdown adjustment. The problems raised in the above background technology are solved.

[0006] To achieve the above purpose, the present application adopts the following technical scheme:

[0007] The utility model provides a non -woven fiber post -treatment device with switching function, including the base, the top of base is provided with the protection frame board, the both ends of base top are installed with pickling circulating tank and oil agent circulating tank respectively, and the middle part of pickling circulating tank and oil agent circulating tank is provided with dilute acid dispensing pump, and the top output end of dilute acid dispensing pump is screw -threaded and installed with the pipe of draining, and the front of dilute acid dispensing pump is screw -threaded and installed with the suction pipe of material;

[0008] Wherein, the front of second feed pipe is installed with the PH sensor for detecting the PH value of oil agent solution, and the front end of oil agent circulating tank is provided with dilute acid metering pump and lye metering pump for adjusting the PH value of oil agent solution, and the front end of the top of oil agent circulating tank is installed with density meter for monitoring the concentration of oil agent solvent, and one end of density meter is sealingly connected to the inside of oil agent circulating tank;

[0009] The back end of one end of the top of protection frame board is installed with liquid supplementing metering pump, one end of second suction pipe is screw -threaded and installed in the inside of liquid supplementing tank, liquid supplementing tank is installed on the top of protection frame board, the output end of the bottom of liquid supplementing metering pump is installed with fourth delivery pipe, and automatic control valve is installed on the surface of fourth delivery pipe;

[0010] The front end of pickling circulating tank is provided with water pump, the output end of the top of water pump is screw -threaded and installed with third delivery pipe, and the front of water pump is screw -threaded and installed with first suction pipe.

[0011] Preferably, the bottom of the water pump is fixedly installed on the top of the base, and the bottoms of the dilute acid metering pump and the lye metering pump are fixedly installed on the top of the base.

[0012] Preferably, one end of the PH sensor is connected to an external terminal through a wire, and one end of the density meter is connected to an external terminal through a wire.

[0013] Preferably, one end of the first suction pipe is connected to an external cleaning tank, and one end of the suction pipe is connected to a concentrated acid storage tank and a dilute water supply pipeline through a three-way corrosion-resistant hose.

[0014] Preferably, the front of the dilute acid metering pump is screw -threaded and installed with an acid suction pipe, and the front of the lye metering pump is screw -threaded and installed with an alkali suction pipe, one end of the acid suction pipe and one end of the alkali suction pipe are connected to an external dilute acid storage tank and an external lye storage tank, respectively.

[0015] Preferably, the output end of the top of the dilute acid metering pump is threaded with an acid discharge pipe, one end of the acid discharge pipe is threaded on the oil agent circulating tank, the output end of the top of the lye metering pump is threaded with an alkali discharge pipe, one end of the alkali discharge pipe is threaded on the oil agent circulating tank.

[0016] Preferably, the top of the acid pickling circulating tank is provided with a first external pump output pipe at one end, and a first cleaning pipe with valve control is threaded below one side of the acid pickling circulating tank.

[0017] Preferably, the top of the oil agent circulating tank is provided with a second external pump output pipe at one end, and a second cleaning pipe with valve control is threaded below one side of the oil agent circulating tank.

[0018] Preferably, the bottom of the protective frame plate is fixed with support legs around, and the bottom of the support legs is fixed with clamping columns.

[0019] Preferably, the clamping columns are clamped in the corresponding column grooves arranged around the top of the base, and the column grooves and the clamping columns are matched.

[0020] The technical effects and advantages of the present application: the non-woven fiber post-processing device with switching function has the following advantages compared with the prior art:

[0021] The present application realizes the rapid switching and PH precise control of the HT / NW production process through the dilute acid dispensing pump, the three-way pipe, the first delivery pipe and the second delivery pipe controlled by the first stop valve and the second stop valve; at the same time, the automatic closed-loop control system of oil agent PH and concentration is constructed relying on the PH sensor on the oil agent circulating tank, the dilute acid metering pump, the lye metering pump, the density meter and the liquid supplementing metering pump, which fundamentally solves the problem of low foam value of finished product caused by unstable oil agent emulsification, and significantly improves the production efficiency by reducing downtime adjustment.

[0022] The present application can conveniently extract cleaning water in the external water tank to automatically flush the inner wall of the acid pickling circulating tank through the cooperation of the water pump, the third delivery pipe and the first suction pipe, effectively remove the residual impurities and crystals in the tank, avoid blockage and pollution, fundamentally avoid uneven cleaning, acid pollution and abnormal concentration caused by nozzle blockage, effectively protect the whiteness and cleanliness of the fiber, reduce the risk of equipment corrosion and energy loss, and significantly improve the production continuity and product consistency. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 The structure of the present application is shown in the figure;

[0024] Figure 2 The rear view structure of the present application is shown in the figure;

[0025] Figure 3The schematic diagram of the explosion separation structure of the present application is shown in the figure.

[0026] Figure 4 The schematic diagram of the explosion separation structure of the present application is shown in the figure. Figure 3 The schematic diagram of the explosion separation structure of the present application is shown in the figure.

[0027] Figure 5 The schematic diagram of the explosion separation structure of the present application is shown in the figure.

[0028] Figure mark: 1, base; 101, guard frame plate; 102, clamping column; 103, column groove; 2, dilute acid preparation pump; 201, suction pipe; 3, discharge pipe; 4, tee pipe; 5, first stop valve; 501, first conveying pipe; 6, second stop valve; 601, second conveying pipe; 7, first feeding pipe; 8, pickling circulating tank; 801, first external pump output pipe; 802, first cleaning pipe; 9, second feeding pipe; 10, oil circulating tank; 1001, second external pump output pipe; 1002, second cleaning pipe; 11, water pump; 12, third conveying pipe; 13, first suction pipe; 14, PH sensor; 15, dilute acid metering pump; 16, acid suction pipe; 17, acid discharge pipe; 18, lye metering pump; 19, alkali suction pipe; 20, alkali discharge pipe; 21, density meter; 22, liquid supplement metering pump; 23, second suction pipe; 24, liquid supplement tank; 25, fourth conveying pipe. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described in combination with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. The specific embodiments described herein are only used to explain the present application, and are not used to limit the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0030] The present application provides a method for preparing a compound of formula (I) as Figures 1-5The utility model provides a non -woven fiber post -treatment device with switching function, including the base 1, the top of base 1 is provided with the protection frame board 101, the top both ends of base 1 are installed with pickling circulating tank 8 and oil agent circulating tank 10 respectively, the middle part of pickling circulating tank 8 and oil agent circulating tank 10 is provided with dilute acid dispensing pump 2, the top output of dilute acid dispensing pump 2 is screw -threaded and installed with the pipe 3 of discharging, the front of dilute acid dispensing pump 2 is screw -threaded and installed with suction pipe 201, one end of suction pipe 201 is connected to concentrated acid storage tank and dilution water supply pipeline respectively through three -way corrosion -resistant hose.

[0031] Wherein, the front of second feed pipe 9 is installed with PH sensor 14 for detecting the PH value of oil agent solution, one end of PH sensor 14 is connected with external terminal through wire, one end of densimeter 21 is connected with external terminal through wire. The front end of oil agent circulating tank 10 is respectively provided with dilute acid metering pump 15 and lye metering pump 18 for adjusting the PH value of oil agent solution, the bottom of dilute acid metering pump 15 and lye metering pump 18 is fixedly installed on the top of base 1.

[0032] The front of dilute acid metering pump 15 is screw -threaded and installed with acid suction pipe 16, the front of lye metering pump 18 is screw -threaded and installed with alkali suction pipe 19, one end of acid suction pipe 16 and alkali suction pipe 19 is connected with external dilute acid storage tank and external lye storage tank respectively. The output end of the top of dilute acid metering pump 15 is screw -threaded and installed with acid discharge pipe 17, one end of acid discharge pipe 17 is screw -threaded and installed on oil agent circulating tank 10, the output end of the top of lye metering pump 18 is screw -threaded and installed with alkali discharge pipe 20, one end of alkali discharge pipe 20 is screw -threaded and installed on oil agent circulating tank 10.

[0033] The front end of the top of oil agent circulating tank 10 is installed with densimeter 21 for monitoring the concentration of oil agent solvent, one end of densimeter 21 is sealingly connected to the inside of oil agent circulating tank 10; The back end of the top one end of protection frame board 101 is installed with liquid supplementing metering pump 22, one end of liquid supplementing metering pump 22 is screw -threaded and installed with second suction pipe 23, one end of second suction pipe 23 is screw -threaded and installed in the inside of liquid supplementing tank 24, liquid supplementing tank 24 is installed on the top of protection frame board 101, the output end of the bottom of liquid supplementing metering pump 22 is installed with fourth delivery pipe 25, the surface of fourth delivery pipe 25 is installed with automatic control valve;

[0034] The PH sensor 14 and the density meter 21 arranged on the oil agent circulating tank 10 monitor the acidity and concentration of the oil agent solution in real time. The dilute acid metering pump 15 is connected to the external dilute acid storage tank through the acid suction pipe 16 and the acid discharge pipe 17 is connected to the oil agent tank; the lye metering pump 18 is connected to the external lye storage tank through the lye suction pipe 19, and the lye discharge pipe 20 is synchronously connected. According to the feedback of the PH sensor 14, the control terminal system automatically starts and stops the metering pump to dynamically adjust the pH value of the oil agent (HT process control 5.0-6.0, NW process control 4.0±0.5). At the same time, the density meter 21 monitors the concentration change, and triggers the liquid supplementing metering pump 22 to supplement the oil agent from the liquid supplementing tank 24 through the second suction pipe 23 to maintain the stable concentration.

[0035] The application realizes the rapid switching and accurate PH control of the HT / NW production process through the dilute acid preparation pump 2, the three-way pipe 4, and the first conveying pipe 501 and the second conveying pipe 601 controlled by the first stop valve 5 and the second stop valve 6; and at the same time, the automatic closed-loop control system of the oil agent PH and concentration is constructed by relying on the PH sensor 14, the dilute acid metering pump 15, the lye metering pump 18, the density meter 21 and the liquid supplementing metering pump 22 on the oil agent circulating tank 10, which fundamentally solves the problem of low foam value of the finished product caused by unstable oil agent emulsification and significantly improves the production efficiency by reducing the shutdown adjustment.

[0036] Further, the dilute acid preparation pump 2 is connected to the concentrated acid storage tank and the deionized water source through the material suction pipe 201 respectively, and outputs the predetermined concentration of dilute acid after accurate mixing through the discharge pipe 3. The three-way pipe 4 divides the dilute acid into two independent pipelines: the first conveying pipe 501 and the second conveying pipe 601, which are controlled by the first stop valve 5 and the second stop valve 6 respectively, to realize the rapid switching of the HT (high pH) and NW (low pH) processes.

[0037] The processing device is controlled by the external control system, the dilute acid preparation pump 2 automatically extracts the concentrated acid from the concentrated acid storage tank and the water source from the dilution water pipeline according to the proportion, and mixes and prepares the acid liquid with the required concentration of the process through the external three-way corrosion-resistant hose; the prepared acid liquid is conveyed to the three-way pipe 4 through the discharge pipe 3, and the flow direction is controlled by the first stop valve 5 and the second stop valve 6 according to the process requirements, and is injected into the acid pickling circulating tank 8 through the first conveying pipe 501 or enters the oil agent circulating tank 10 through the second conveying pipe 601.

[0038] The PH sensor 14 and the density meter 21 arranged on the oil agent circulating tank 10 monitor the solution parameters in the tank in real time, and when the PH value deviates from the set range, the control system automatically starts the dilute acid metering pump 15 or the lye metering pump 18 to extract the adjusting agent stored externally through the acid suction pipe 16 / lye suction pipe 19, and accurately injects it into the oil agent tank through the acid discharge pipe 17 / lye discharge pipe 20 for dynamic adjustment of the PH value.

[0039] At the same time, the liquid supplement system on the protection frame plate 101 draws the additive from the liquid supplement tank 24 through the liquid supplement metering pump 22 and the second suction pipe 23, and realizes quantitative liquid supplement through the fourth conveying pipe 25 with an automatic control valve.

[0040] The whole system adopts corrosion-resistant threaded sealing connection, and realizes closed-loop intelligent control of acid liquid concentration, PH value and solution density through centralized monitoring terminal, so that the stability and accuracy of the treatment process are ensured.

[0041] The water pump 11 is arranged at the front end of the pickling circulating tank 8, a third conveying pipe 12 is threadedly installed at the output end of the top of the water pump 11, and a first suction pipe 13 is threadedly installed at the front of the water pump 11. One end of the first suction pipe 13 is connected with an external cleaning tank. The bottom of the water pump 11 is fixedly installed on the top of the base 1. One end of the third conveying pipe 12 is connected with the pickling circulating tank 8.

[0042] The water pump 11, the third conveying pipe 12 and the first suction pipe 13 and other components are matched with each other, so that the cleaning water in the external water tank can be conveniently extracted to automatically flush the inner wall of the pickling circulating tank 8, impurities and crystals remaining in the tank can be effectively removed, blockage and pollution can be avoided, cleaning unevenness, acid liquid pollution and concentration abnormality caused by nozzle blockage can be fundamentally avoided, the whiteness and cleanliness of fibers can be effectively ensured, the corrosion risk and energy loss of equipment can be reduced, and the production continuity and product consistency can be significantly improved.

[0043] When working, the water pump 11 extracts water in the external cleaning water tank through the first suction pipe 13, injects the water into the tank through the third conveying pipe 12, flushes the tank wall and pipeline through the built-in spraying mechanism, prevents impurities, crystals and algae from accumulating, ensures pickling efficiency and avoids nozzle blockage.

[0044] A first external pump output pipe 801 is installed at one end of the top of the pickling circulating tank 8, and a first cleaning pipe 802 with valve control is threadedly installed below one side of the pickling circulating tank 8.

[0045] The first external pump output pipe 801 arranged at the top of the pickling circulating tank 8 is used as a main process outlet, a standard interface is connected with an external conveying pump, the pickling liquid after treatment can be stably conveyed to the next production process, a first cleaning pipe 802 with a precision valve is arranged at a strategic position below the side of the tank body, the pipe is connected through corrosion-resistant threads, the safe discharge of waste liquid can be realized through valve opening adjustment, and efficient flushing of residues in the tank can be completed in cooperation with the cleaning system, so that a complete “treatment-conveying-cleaning” circulation system is formed.

[0046] A second external pump output pipe 1001 is installed at one end of the top of the oil circulating tank 10, and a second cleaning pipe 1002 with valve control is threadedly installed below one side of the oil circulating tank 10.

[0047] The oil circulating tank 10 adopts the same design principle, realizes oil circulating output through the second outer connecting pump output pipe 1001 at the top, and the valve-equipped second cleaning pipe 1002 at the lower side is used for the maintenance and cleaning of the oil system.

[0048] The bottom of the protection rack plate 101 is fixed with support legs, and the bottom of the support leg is fixed with a clamping column 102. The clamping column 102 is clamped in the corresponding column groove 103 arranged at the top of the base 1, and the column groove 103 is matched with the clamping column 102. By arranging the clamping column 102 and the column groove 103, the protection rack plate 101 can be conveniently disassembled, replaced and installed.

[0049] The model and parameters of the dilute acid preparation pump 2, the stop valve, the water pump 11, the PH sensor 14, the dilute acid metering pump 15, the lye metering pump 18, the density meter 21 and the liquid supplementing metering pump 22 in the above content are as follows:

[0050] The dilute acid preparation pump 2 adopts a corrosion-resistant magnetic drive pump (such as an IHF series fluoroplastic lining pump), with a rated flow of 5-10 m³ / h, a lift of 20-30 m, 316L stainless steel flow parts, resistance to acid-base medium with PH value of 0-14, motor power of 3-4 kW, and concentration acid / dilution water ratio mixing control through a frequency converter.

[0051] The stop valve (first stop valve 5, second stop valve 6) selects a PTFE lining pneumatic cut-off valve (such as VP347 type of VTON brand), with a DN50 aperture, a working pressure of 1.0 MPa, a valve body material of CF8 stainless steel, a leakage level reaching ANSI V level, a double-acting cylinder actuator (0.4-0.6 MPa gas source pressure), a switching time of ≤3 seconds, and meets the high-frequency switching requirement of pickling station.

[0052] The water pump 11 is configured with a stainless steel centrifugal pump (such as CR series of Granville), with a flow of 15 m³ / h and a lift of 15 m, a mechanical seal using SiC / SiC friction pair, a motor insulation level of IP55, and a particularly optimized cavitation allowance (NPSHr≤2 m) during pickling liquid conveying.

[0053] The PH sensor 14 adopts a Mettler-Toledo InPro4260i intelligent electrode, with a measurement range of PH0-14, an accuracy of ±0.02PH, a temperature compensation (0-80℃), a 3-in-1 solid gel reference system, and a 4-20 mA signal output to the PLC control system through a matching transmitter.

[0054] The dilute acid metering pump 15 selects a ProMinent electromagnetic drive diaphragm pump (such as DME series), with a flow of 0-500 L / h adjustable, a pressure of 1.6 MPa, a pump head material of PTFE+blue sapphire, a stroke frequency of 0-100% stepless adjustment, a repeat accuracy of ±1%, and is specially used for accurate injection of 4% dilute sulfuric acid solution.

[0055] Lye metering pump 18 Milton Roy mechanical diaphragm pump (such as GM series), flow range 50-300L / h, outlet pressure 0.7MPa, pump valve group uses Hastelloy C276 material, equipped with stroke adjusting hand wheel and digital flow display table, suitable for 30% NaOH solution delivery.

[0056] Density meter 21 OPTIMASS series Coriolis force mass flow meter of Germany Cologne, measurement range 0.5-2.5g / cm³, precision ±0.001g / cm³, sensor material Hastelloy, with PT100 temperature compensation, directly outputting density and concentration double parameters to DCS system.

[0057] Make-up metering pump 22 small flow gear pump (such as Alpha VP series), rated flow 0.1-10L / min, pressure 0.3MPa, pump body uses PP material, matched with stepping motor driver to realize pulse control, minimum metering unit 0.01mL, used for additive trace make-up.

[0058] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the present application is described in detail with reference to the foregoing embodiments, for those skilled in the art, it still can be modified to the technical solutions recorded in the foregoing embodiments, or equivalent replacement of some technical features, within the spirit and principles of the present application, any modification, equivalent replacement, improvement, etc., should be included in the protection scope of the present application.

Claims

1. A nonwoven fiber post-treatment apparatus with a switching function, characterized by: The utility model provides an acid pickling circulating tank and oil agent circulating tank, and the acid pickling circulating tank and oil agent circulating tank are connected through a three -way pipe, and the three -way pipe is provided with a first stop valve and a second stop valve, and the first stop valve and the second stop valve are respectively provided with a first conveying pipe and a second conveying pipe, and the first conveying pipe and the second conveying pipe are respectively connected with a first feed pipe and a second feed pipe arranged on the top of the acid pickling circulating tank and the oil agent circulating tank. The utility model discloses a pickling circulating tank and oil agent circulating tank, and the acid pickling circulating tank and oil agent circulating tank are connected through a three -way pipe, and the three -way pipe is provided with a first stop valve and a second stop valve, and the first stop valve and the second stop valve are respectively provided with a first conveying pipe and a second conveying pipe, and the first conveying pipe and the second conveying pipe are respectively connected with a first feed pipe and a second feed pipe arranged on the top of the acid pickling circulating tank and the oil agent circulating tank. The utility model discloses a pickling circulating tank and oil agent circulating tank, and the acid pickling circulating tank and oil agent circulating tank are connected through a three -way pipe, and the three -way pipe is provided with a first stop valve and a second stop valve, and the first stop valve and the second stop valve are respectively provided with a first conveying pipe and a second conveying pipe, and the first conveying pipe and the second conveying pipe are respectively connected with a first feed pipe and a second feed pipe arranged on the top of the acid pickling circulating tank and the oil agent circulating tank. The utility model discloses a pickling circulating tank and oil agent circulating tank, and the acid pickling circulating tank and oil agent circulating tank are connected through a three -way pipe, and the three -way pipe is provided with a first stop valve and a second stop valve, and the first stop valve and the second stop valve are respectively provided with a first conveying pipe and a second conveying pipe, and the first conveying pipe and the second conveying pipe are respectively connected with a first feed pipe and a second feed pipe arranged on the top of the acid pickling circulating tank and the oil agent circulating tank.

2. A nonwoven fiber post-treatment apparatus having a switching function according to claim 1, characterized by: The utility model discloses a pickling circulating tank and oil agent circulating tank, and the acid pickling circulating tank and oil agent circulating tank are connected through a three -way pipe, and the three -way pipe is provided with a first stop valve and a second stop valve, and the first stop valve and the second stop valve are respectively provided with a first conveying pipe and a second conveying pipe, and the first conveying pipe and the second conveying pipe are respectively connected with a first feed pipe and a second feed pipe arranged on the top of the acid pickling circulating tank and the oil agent circulating tank.

3. A nonwoven fiber post-treatment apparatus having a switching function according to claim 1, characterized in that: The utility model discloses a pickling circulating tank and oil agent circulating tank, and the acid pickling circulating tank and oil agent circulating tank are connected through a three -way pipe, and the three -way pipe is provided with a first stop valve and a second stop valve, and the first stop valve and the second stop valve are respectively provided with a first conveying pipe and a second conveying pipe, and the first conveying pipe and the second conveying pipe are respectively connected with a first feed pipe and a second feed pipe arranged on the top of the acid pickling circulating tank and the oil agent circulating tank.

4. The nonwoven fiber post-treatment apparatus having a switching function according to claim 1, characterized by: The utility model discloses a pickling circulating tank and oil agent circulating tank, and the acid pickling circulating tank and oil agent circulating tank are connected through a three -way pipe, and the three -way pipe is provided with a first stop valve and a second stop valve, and the first stop valve and the second stop valve are respectively provided with a first conveying pipe and a second conveying pipe, and the first conveying pipe and the second conveying pipe are respectively connected with a first feed pipe and a second feed pipe arranged on the top of the acid pickling circulating tank and the oil agent circulating tank.

5. The nonwoven fiber post-treatment apparatus having a switching function according to claim 1, characterized by: The utility model discloses a pickling circulating tank and oil agent circulating tank, and the acid pickling circulating tank and oil agent circulating tank are connected through a three -way pipe, and the three -way pipe is provided with a first stop valve and a second stop valve, and the first stop valve and the second stop valve are respectively provided with a first conveying pipe and a second conveying pipe, and the first conveying pipe and the second conveying pipe are respectively connected with a first feed pipe and a second feed pipe arranged on the top of the acid pickling circulating tank and the oil agent circulating tank. The utility model discloses a pickling circulating tank and oil agent circulating tank, and the acid pickling circulating tank and oil agent circulating tank are connected through a three -way pipe, and the three -way pipe is provided with a first stop valve and a second stop valve, and the first stop valve and the second stop valve are respectively provided with a first conveying pipe and a second conveying pipe, and the first conveying pipe and the second conveying pipe are respectively connected with a first feed pipe and a second feed pipe arranged on the top of the acid pickling circulating tank and the oil agent circulating tank. The utility model discloses a pickling circulating tank and oil agent circulating tank, and the acid pickling circulating tank and oil agent circulating tank are connected through a three -way pipe, and the three -way pipe is provided with a first stop valve and a second stop valve, and the first stop valve and the second stop valve are respectively provided with a first conveying pipe and a second conveying pipe, and the first conveying pipe and the second conveying pipe are respectively connected with a first feed pipe and a second feed pipe arranged on the top of the acid pickling circulating tank and the oil agent circulating tank. The utility model discloses a pickling circulating tank and oil agent circulating tank, and the acid pickling circulating tank and oil agent circulating tank are connected through a three -way pipe, and the three -way pipe is provided with a first stop valve and a second stop valve, and the first stop valve and the second stop valve are respectively provided with a first conveying pipe and a second conveying pipe, and the first conveying pipe and the second conveying pipe are respectively connected with a first feed pipe and a second feed pipe arranged on the top of the acid pickling circulating tank and the oil agent circulating tank. The utility model discloses a pickling circulating tank and oil agent circulating tank, and the acid pickling circulating tank and oil agent circulating tank are connected through a three -way pipe, and the three -way pipe is provided with a first stop valve and a second stop valve, and the first stop valve and the second stop valve are respectively provided with a first conveying pipe and a second conveying pipe, and the first conveying pipe and the second conveying pipe are respectively connected with a first feed pipe and a second feed pipe arranged on the top of the acid pickling circulating tank and the oil agent circulating tank. The utility model discloses a pickling circulating tank and oil agent circulating tank, and the acid pickling circulating tank and oil agent circulating tank are connected through a three -way pipe, and the three -way pipe is provided with a first stop valve and a second stop valve, and the first stop valve and the second stop valve are respectively provided with a first conveying pipe and a second conveying pipe, and the first conveying pipe and the second conveying pipe are respectively connected with a first feed pipe and a second feed pipe arranged on the top of the acid pickling circulating tank and the oil agent circulating tank. The utility model discloses a pickling circulating tank and oil agent circulating tank, and the acid pickling circulating tank and oil agent circulating tank are connected through a three -way pipe, and the three -way pipe is provided with a first stop valve and a second stop valve, and the first stop valve and the second stop valve are respectively provided with a first conveying pipe and a second conveying pipe, and the first conveying pipe and the second conveying pipe are respectively connected with a first feed pipe and a second feed pipe arranged on the top of the acid pickling circulating tank and the oil agent circulating tank. The utility model discloses a pickling circulating tank and oil agent circulating tank, and the acid pickling circulating tank and oil agent circulating tank are connected through a three -way pipe, and the three -way pipe is provided with a first stop valve and a second stop valve, and the first stop valve and the second stop valve are respectively provided with a first conveying pipe and a second conveying pipe, and the first conveying pipe and the second conveying pipe are respectively connected with a first feed pipe and a second feed pipe arranged on the top of the acid pickling circulating tank and the oil agent circulating tank. The utility model discloses a pickling circulating tank and oil agent circulating tank, and the acid pickling circulating tank and oil agent circulating tank are connected through a three -way pipe, and the three -way pipe is provided with a first stop valve and a second stop valve, and the first stop valve and the second stop valve are respectively provided with a first conveying pipe and a second conveying pipe, and the first conveying pipe and the second conveying pipe are respectively connected with a first feed pipe and a second feed pipe arranged on the top of the acid pickling circulating tank and the oil agent circulating tank. The utility model discloses a pickling circulating tank and oil agent circulating tank, and the acid pickling circulating tank and oil agent circulating tank are connected through a three -way pipe, and the three -way pipe is provided with a first stop valve and a second stop valve, and the first stop valve and the second stop valve are respectively provided with a first conveying pipe and a second conveying pipe, and the first conveying pipe and the second conveying pipe are respectively connected with a first feed pipe and a second feed pipe arranged on the top of the acid pickling 6. A nonwoven fiber post-treatment apparatus having a switching function according to claim 1, characterized by: The output end of the top of the dilute acid metering pump (15) is threadedly connected with an acid discharge pipe (17), one end of the acid discharge pipe (17) is threadedly connected with the oil agent circulating tank (10), the output end of the top of the lye metering pump (18) is threadedly connected with an alkali discharge pipe (20), one end of the alkali discharge pipe (20) is threadedly connected with the oil agent circulating tank (10).

7. The nonwoven fiber post-treatment apparatus having a switching function according to claim 1, characterized by: The top of the acid pickling circulating tank (8) is provided with a first external pump output pipe (801) at one end, and the bottom of one side of the acid pickling circulating tank (8) is threadedly connected with a first cleaning pipe (802) provided with a valve control.

8. The nonwoven fiber post-treatment apparatus having a switching function according to claim 1, characterized by: The top of the oil agent circulating tank (10) is provided with a second external pump output pipe (1001) at one end, and the bottom of one side of the oil agent circulating tank (10) is threadedly connected with a second cleaning pipe (1002) provided with a valve control.

9. The nonwoven fiber post-treatment apparatus having a switching function according to claim 1, characterized by: The bottom of the protection frame plate (101) is fixedly provided with supporting legs, and the bottom of the supporting legs is fixedly provided with clamping columns (102).

10. A nonwoven fiber post-treatment apparatus having a switching function according to claim 9, characterized by: The clamping columns (102) are clamped in the corresponding column grooves (103) arranged at the top of the base (1), and the column grooves (103) and the clamping columns (102) are matched with each other.

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