Device capable of automatically and uniformly feeding liquid to spunlaced non-woven fabric

Abstract

The utility model discloses a device capable of automatically and uniformly feeding liquid to spunlaced non-woven fabric, and relates to the field of spunlaced non-woven fabric production lines. The device is provided with a liquid storage part and a liquid feeding part which are communicated with each other, and a control device. The liquid storage component can prepare, uniformly stir, temporarily store and supply additive liquid according to needs, and the liquid feeding component can automatically and uniformly feed various types of additive liquid to the full-breadth spunlace non-woven fabric production line at any speed. A traditional liquid feeding mode is changed, additive liquid carried by the liquid feeding roller is automatically and evenly transferred to the spunlaced non-woven fabric through the speed difference and friction force of the liquid feeding roller and the spunlaced non-woven fabric, automatic liquid feeding and even liquid feeding of the spunlaced non-woven fabric are achieved, the liquid feeding evenness and stability are improved, the product quality is improved, the defective rate is reduced, and the production efficiency is improved. The liquid feeding efficiency and the automation degree are improved, continuous production is achieved, product diversification is enriched, additive liquid waste is avoided, energy consumption in the subsequent drying link is reduced, the application range is wide, and universality is high.

Description

Technical Field

[0001] The utility model relates to the technical field of spunlace nonwoven production line equipment, specifically a device capable of automatically and evenly feeding liquid to spunlace nonwovens, suitable for online or offline addition of hydrophilic base and other additives in a spunlace nonwoven production line of full width and arbitrary speed, and especially suitable for meeting the requirements of polyester or high-content polyester spunlace nonwovens for uniform water absorption. Background Art

[0002] With the improvement of people's living standards, spunlace nonwovens are increasingly used in people's lives, and the market has higher and higher requirements for the quality of spunlace nonwovens. According to people's living habits, various nonwoven products have also emerged in the market. Nonwoven manufacturers add additives to nonwovens to produce better quality and more convenient products, thereby improving the competitiveness of their nonwoven products.

[0003] At present, domestic and foreign spunlace nonwoven fabric manufacturers mainly use spraying and dipping methods to feed liquid in the production process of spunlace nonwoven fabrics. Spraying technology uses a spray device to feed liquid to nonwoven fabrics. The defects of the spraying method are: the atomized additive liquid is very easy to evaporate in the air; the spray head will be blocked after long-term use, and in severe cases, the additive liquid on the cloth surface will be unevenly distributed, resulting in rolls of waste cloth. Dipping technology appeared earlier and was first used in the dyeing and finishing industry. With the development of the nonwoven fabric industry, spunlace nonwoven fabric manufacturers have learned from dyeing and finishing technology to add additives to nonwoven fabrics to enrich the types of nonwoven fabric products. Dipping technology is to immerse the spunlace nonwoven fabrics in the additive liquid tank, and then carry out the next process of rolling or drying according to product requirements. Although the dipping method can solve the problem of uneven distribution of liquid on the surface of nonwoven fabrics, complete soaking will not only cause a large amount of waste of additive liquid, but also increase the working pressure of subsequent drying equipment, resulting in energy consumption, which is seriously inconsistent with the current concept of green and sustainable development. At the same time, the traditional spraying and immersion feeding methods are generally suitable for low-speed production lines, and require manual cooperation and participation in many places. Sometimes, it is even necessary to shut down or stop production. That is, the traditional spraying and immersion feeding methods have limited application scope, low versatility, have not achieved true automation, and cannot meet the requirements of sustainable production. Summary of the invention

[0004] The purpose of the present invention is to provide a device that can automatically and evenly feed liquid to spunlace nonwoven fabrics in response to the deficiencies in the above-mentioned prior art. The present invention changes the traditional way of feeding liquid. The present invention can automatically and evenly feed a variety of additive liquids to a spunlace nonwoven fabric production line of full width and any speed, which not only greatly improves the uniformity and stability of the liquid feeding, improves the product quality of the spunlace nonwoven fabric, and reduces the defective rate, but also realizes unmanned automated operation of the liquid feeding process, greatly improves the liquid feeding efficiency and automation level, meets the requirements of continuous production, and can also enrich the diversification of spunlace nonwoven fabric products, while avoiding the waste of additive liquid, thereby greatly reducing the energy consumption of the subsequent drying link, and also has the advantages of wide application range and strong versatility.

[0005] The purpose of this utility model can be achieved through the following technical measures:

[0006] The utility model provides a device capable of automatically and evenly feeding liquid to a spunlace nonwoven fabric, comprising a liquid storage component and a liquid feeding component connected through a fluid pipeline, and a control device connected to the liquid feeding component and the liquid storage component through an electrical signal for controlling the flow of liquid (the main function of the liquid storage component is to prepare, stir, temporarily store, and supply an additive liquid. The main function of the liquid feeding component is to carry the additive liquid in the main liquid tank to the spunlace nonwoven fabric passing through the liquid feeding roller through the rotation of the liquid feeding roller, and to automatically and evenly feed liquid to the spunlace nonwoven fabric. After receiving the sensing signal from the sensing parts such as the low liquid level detector, the high liquid level detector, and the liquid level monitoring component, the control device opens or closes the corresponding actuators such as the metering pump, the stirring motor, the inlet air control valve, the outlet air control valve, the drain air control valve, and the reduction motor, and stably replenishes the additive liquid into the inner cavity of the main liquid tank and replaces the additive liquid);

[0007] The liquid storage component includes a liquid storage barrel (the liquid storage barrel provides a place for preparing, stirring and temporarily storing the additive liquid), a stirring assembly arranged on the top cover of the liquid storage barrel and rotating under the drive of the stirring motor (the stirring assembly is used to stir the additive liquid. That is, on the one hand, the concentrated liquid and solvent automatically added to the liquid storage barrel by the metering pump in proportion are stirred, mixed and diluted to make the density of the additive liquid in the inner cavity of the liquid storage barrel consistent; on the other hand, if powder additives are added, the stirring assembly can also prevent the additive liquid from precipitating), a low liquid level detector and a high liquid level detector embedded in the barrel wall of the liquid storage barrel, and a barrel inlet joint connected to several metering pumps through a fluid pipeline (the metering pump is used to automatically prepare the additive liquid - that is, according to the required amount and concentration of the additive liquid, the metering pump automatically adds the required amount of concentrated liquid and solvent in proportion for pumping, and pumps them into the inner cavity of the liquid storage barrel through the barrel inlet joint, and then the stirring assembly stirs and stirs them evenly Finally, the added liquid with the same density is obtained. The low liquid level detector is used for the low level alarm of the added liquid in the barrel. After the control device receives the sensing signal transmitted from the low liquid level detector, it starts the metering pump and starts to add the added liquid to the storage barrel; the high liquid level detector is used for the high level alarm of the added liquid. After the control device receives the sensing signal transmitted from the high liquid level detector, it shuts down the metering pump and stops adding the added liquid to the storage barrel), the barrel outlet joint connected to the inlet end of the infusion pump through the fluid pipeline (the infusion pump provides pumping power for the added liquid to be smoothly pumped from the storage barrel into the main liquid tank, and provides a guarantee for the stable addition of the added liquid to the inner cavity of the main liquid tank. The barrel outlet joint serves as a docking joint between the inner cavity of the storage barrel and the fluid pipeline, which facilitates the rapid connection between the inner cavity of the storage barrel and the infusion pump, ensures that the added liquid flows out smoothly from the inner cavity of the storage barrel, and at the same time, in conjunction with the infusion pump, it can stably add the added liquid to the inner cavity of the main liquid tank);

[0008] The liquid feeding component includes a frame (providing an installation foundation for other components in the liquid storage component), a liquid feeding roller installed on the upper side of the frame with the help of bearing seats at both ends, and rotating under the drive of the reduction motor and the transmission component (the bearing seat is used to install and support the liquid feeding roller; the reduction motor provides driving force for the rotation of the liquid feeding roller; the transmission component transmits the driving force of the reduction motor to the liquid feeding roller; the rotating liquid feeding roller carries the additional liquid in the main liquid tank and transfers it to the spunlaced nonwoven fabric passing through the top surface of the liquid feeding roller, and the moving speed is greater than the roller surface linear speed of the liquid feeding roller. The speed difference and relative friction between the two can make the additional liquid carried by the liquid feeding roller automatically and evenly transferred to the spunlaced nonwoven fabric, so as to realize automatic and uniform liquid feeding of the spunlaced nonwoven fabric), arranged in the upper inner cavity of the frame, filled with additional liquid to soak the lower half roller of the liquid feeding roller, and the bottom of the cavity is connected to the infusion through a fluid pipeline. The outlet of the pump is connected to the main liquid tank (the main liquid tank is used to hold the additive liquid, and under the cooperation of the control device, the liquid level monitoring component, the infusion pump, and the imported air control valve, the additive liquid can be automatically and stably replenished in the main liquid tank in a timely manner to ensure that the liquid level of the additive liquid in the main liquid tank is higher than the low liquid level, effectively avoiding the appearance of defective non-woven fabrics due to insufficient additive liquid), a secondary liquid tank is fixed on the outside of the frame, the bottom of the cavity is connected to the main liquid tank through a U-shaped connecting piece (the main liquid tank and the secondary liquid tank are connected through a U-shaped connecting piece, so that the liquid levels in the two tanks can be the same, so real-time monitoring of the changes in the liquid level of the secondary liquid tank is equivalent to real-time monitoring of the changes in the liquid level of the main liquid tank. At the same time, the secondary liquid tank provides a floating space for the float), a float floating in the inner cavity of the secondary liquid tank (when the float floats in the additive liquid of the secondary liquid tank, gravity and buoyancy are a pair of balanced action and reaction forces, Because the gravity of the float does not change, the buoyancy also does not change, that is, the volume and depth of the float immersed in the additive liquid are fixed. Therefore, when the height of the additive liquid in the auxiliary liquid tank changes, the height position of the float changes synchronously, that is, by monitoring the height position changes of the float in real time, the changes in the liquid levels of the auxiliary liquid tank and the main liquid tank can be known), the liquid level monitoring component linked to the float (on the one hand, the liquid level monitoring component is used to monitor the height position changes of the float in real time, that is, to monitor the changes in the liquid levels of the auxiliary liquid tank and the main liquid tank in real time; on the other hand, the liquid level monitoring component can promptly feedback the changes in the liquid level of the main liquid tank to the control device, Provide a basis for judging whether it is necessary to add additives to the main liquid tank or stop adding additives); an inlet air-controlled valve is connected in series to the fluid pipeline section between the main liquid tank and the infusion pump (used to open or close the fluid pipeline between the main liquid tank and the liquid storage barrel), and an external discharge pipeline equipped with an outlet air-controlled valve is connected to the bottom of the main liquid tank (when new additives need to be replaced, the outlet air-controlled valve can be opened to open the external discharge pipeline and discharge the waste additives in the main liquid tank in time), and a liquid discharge air-controlled valve is installed in the U-shaped communicating vessel (when new additives need to be replaced, the liquid discharge air-controlled valve can be opened to discharge the waste additives in the auxiliary liquid tank in time);

[0009] The control device is respectively connected to the stirring motor, the low liquid level detector, the high liquid level detector, the metering pump, and the infusion pump in the liquid storage component by means of electrical signals; the control device is respectively connected to the reduction motor, the inlet air control valve, the outlet air control valve, the discharge air control valve, and the liquid level monitoring component in the liquid supply component by means of electrical signals (the control device starts the metering pump and the stirring motor after receiving the sensing signal transmitted from the low liquid level detector, and the metering pump pumps the added liquid into the inner cavity of the liquid storage barrel, and the stirring motor uniformly stirs the added liquid in the liquid storage barrel to form an added liquid with uniform density; the control device turns off the metering pump after receiving the sensing signal transmitted from the high liquid level detector, and stops pumping the added liquid into the inner cavity of the liquid storage barrel; the control device receives the lower alarm signal transmitted from the liquid level monitoring component After the warning line sensing signal is received, the infusion pump and the inlet air control valve are turned on to pump the added liquid in the inner cavity of the liquid storage barrel into the inner cavity of the main liquid tank; after the control device receives the upper warning line sensing signal transmitted from the liquid level monitoring component, the infusion pump and the inlet air control valve are turned off to stop pumping the added liquid into the inner cavity of the main liquid tank. When it is necessary to replace the new added liquid, the control device sends an opening command to the outlet air control valve and the drain air control valve to discharge the waste added liquid in the main liquid tank, U-shaped connecting vessel and auxiliary liquid tank respectively. In addition, according to the moving speed of the spunlace nonwoven fabric, the control device adjusts the rotation speed of the reduction motor according to the user's requirements for the amount of nonwoven fabric added, to ensure that the roller surface linear speed of the liquid feeding roller is less than the moving speed of the spunlace nonwoven fabric, that is, automatic liquid feeding and uniform liquid can be ensured at the same time).

[0010] The roller surface linear speed of the liquid feeding roller in the utility model is lower than the moving speed of the spunlace nonwoven fabric (the speed difference and relative friction between the two can make the additive liquid carried by the liquid feeding roller automatically and evenly transferred to the spunlace nonwoven fabric, so as to realize automatic and even liquid feeding of the spunlace nonwoven fabric; in actual application, the roller surface linear speed of the liquid feeding roller is adjusted according to the required liquid feeding amount - that is, the roller surface linear speed of the liquid feeding roller is adjusted by adjusting the rotation speed of the reduction motor).

[0011] The auxiliary liquid tank and the main liquid tank described in the utility model have the same tank depth and are arranged at the same height (after the auxiliary liquid tank and the main liquid tank are connected through a U-shaped connecting vessel, the liquid levels in the two tanks are the same. Designing the auxiliary liquid tank and the main liquid tank to have the same tank depth and be arranged at the same height can more intuitively display the synchronization of the liquid levels in the inner cavities of the two).

[0012] The stirring assembly described in the utility model is composed of a stirring shaft and a plurality of stirring blades vertically installed on the stirring shaft (a stirring motor drives the stirring shaft to rotate, and the stirring shaft drives the stirring blades to rotate synchronously. During the rotation, the stirring blades evenly stir the added liquid in the inner cavity of the liquid storage barrel to make the density of the added liquid in the inner cavity of the liquid storage barrel consistent. When the stirring shaft drives the stirring blades to rotate, it can also effectively prevent the added liquid from precipitating when adding powder additives).

[0013] In the utility model, a protective cover shell is fastened to the periphery of the transmission component (to protect the safety of the operator).

[0014] The stirring motor described in the utility model is connected and fixed on the top cover of the liquid storage barrel through a movable connecting piece; the reduction motor is fixed to the outside of the frame through bolt connection, and the reduction motor is a variable frequency speed regulating motor (the speed of the reduction motor can be adjusted according to the user's demand for the amount of added liquid).

[0015] The design principle of the utility model is as follows:

[0016] The utility model is designed with a liquid storage component and a liquid supply component connected by a fluid pipeline, and a control device connected to the liquid storage component and the liquid storage component by an electrical signal for controlling the flow of liquid. Among them, the liquid storage component can prepare, stir, temporarily store, and supply the additive liquid as needed under the control of the control device, and the liquid supply component can automatically and evenly supply a variety of additive liquids to the spunlace nonwoven production line of full width and arbitrary speed under the control of the control device. The utility model changes the traditional liquid supply method, and utilizes the speed difference and friction between the liquid supply roller and the spunlace nonwoven fabric to automatically and evenly transfer the additive liquid carried by the liquid supply roller to the spunlace nonwoven fabric, thereby realizing automatic and uniform liquid supply to the spunlace nonwoven fabric, improving the uniformity and stability of liquid supply, improving product quality, reducing the defective rate, improving liquid supply efficiency and automation, realizing continuous production, enriching product diversification, avoiding waste of additive liquid, reducing energy consumption in subsequent drying links, and having a wide range of applications and strong versatility. A more specific principle explanation is as follows:

[0017] The liquid storage component can prepare, stir, temporarily store and supply the additive liquid as needed under the control of the control device - that is, the control device starts the metering pump after receiving the sensing signal transmitted from the low liquid level detector, and the metering pump automatically mixes the required amount of concentrated liquid and solvent in proportion to the required amount and concentration of the additive liquid for pumping, and pumps it into the inner cavity of the liquid storage barrel through the barrel inlet joint, and then stirs it by the stirring component. After stirring evenly, the additive liquid with consistent density is temporarily stored for use; after receiving the sensing signal transmitted from the high liquid level detector, the control device turns off the metering pump and stops adding the additive liquid to the liquid storage barrel.

[0018] Under the control of the control device, the liquid feeding component can automatically and evenly feed various types of additive liquids to the spunlace nonwoven fabrics of full width and arbitrary speed. Since the liquid feeding component of the utility model is designed with a main liquid tank and an auxiliary liquid tank connected by a U-shaped connecting vessel, with the same tank depth and arranged at the same height, the liquid levels in the two tanks are always the same, and the changes in the liquid levels are also the same. Therefore, real-time monitoring of the changes in the liquid level in the auxiliary liquid tank is equivalent to real-time monitoring of the changes in the liquid level in the main liquid tank. With the help of a float in the auxiliary liquid tank that rises and falls synchronously with the changes in the liquid level, and a liquid level monitoring component linked to the float, The system can monitor the changes in the liquid levels of the auxiliary liquid tank and the main liquid tank in real time. At the same time, the liquid level monitoring component promptly feeds back the changes in the liquid level of the main liquid tank to the control device, and the control device judges whether it is necessary to add additional liquid to the main liquid tank or stop adding additional liquid: that is, when the control device receives the lower warning line sensing signal transmitted from the liquid level monitoring component, it turns on the infusion pump and the inlet air control valve to pump the additional liquid in the inner cavity of the liquid storage barrel into the inner cavity of the main liquid tank; when the control device receives the upper warning line sensing signal transmitted from the liquid level monitoring component, it turns off the infusion pump and the inlet air control valve to stop pumping the additional liquid into the inner cavity of the main liquid tank. At the same time, since the liquid feeding component of the utility model is also designed with a liquid feeding roller that rotates under the drive of the reduction motor and the transmission component, and the roller surface linear speed of the liquid feeding roller is less than the moving speed of the spunlace non-woven fabric, the lower half of the liquid feeding roller is always immersed in the added liquid in the inner cavity of the main liquid tank. In this way, the speed difference and relative friction between the liquid feeding roller and the spunlace non-woven fabric can make the added liquid carried by the liquid feeding roller automatically and evenly transferred to the spunlace non-woven fabric, thereby realizing automatic and uniform liquid feeding of the spunlace non-woven fabric, which not only greatly improves the uniformity and stability of the liquid feeding, improves the product quality of the spunlace non-woven fabric, and reduces the defective rate, but also realizes unmanned automated operation of the liquid feeding process, greatly improves the liquid feeding efficiency and the degree of automation, meets the requirements of continuous production, and at the same time avoids the waste of added liquid, thereby greatly reducing the energy consumption in the subsequent drying link.

[0019] In addition, the speed of the reduction motor in the utility model can be selected according to the moving speed of the spunlace nonwoven fabric and the requirements of the liquid feeding amount. Therefore, the utility model can meet the requirements of automatic and uniform liquid feeding of spunlace nonwoven fabrics at any speed, and has the advantages of wide application range and strong versatility.

[0020] When it is necessary to replace the new additive liquid: first, use the control device to send an opening command to the outlet air-controlled valve and the drain air-controlled valve to discharge the waste additive liquid in the main liquid tank, the U-shaped connecting vessel and the auxiliary liquid tank respectively; then, start the metering pump to add clean water to the liquid storage barrel, repeat the above action process, pump it into the main liquid tank after stirring, rotate the liquid feeding roller, and at the same time drive the liquid in the main liquid tank to impact and clean the main liquid tank, and then empty the liquid in the main liquid tank to complete the cleaning of the liquid storage barrel, the main liquid tank, the liquid feeding roller and the pipeline system; then, the liquid storage component prepares, stirs, temporarily stores and supplies new additive liquid as needed, and the liquid feeding component automatically and evenly feeds the new additive liquid to the spunlace non-woven fabric, which meets the liquid feeding needs of the spunlace non-woven fabric for various types of additive liquids, can enrich the diversification of spunlace non-woven fabric products, and has the advantages of wide application range and strong versatility.

[0021] The beneficial technical effects of the utility model are as follows:

[0022] The utility model changes the traditional liquid feeding method. The utility model can be used to automatically and evenly feed a variety of additive liquids to spunlace nonwoven fabrics of full width and arbitrary speed, which not only greatly improves the uniformity and stability of liquid feeding, improves the product quality of spunlace nonwoven fabrics, and reduces the defective rate, but also realizes unmanned automatic operation of the liquid feeding process, greatly improves the liquid feeding efficiency and the degree of automation, meets the requirements of continuous production, and can also enrich the diversification of spunlace nonwoven fabric products, while avoiding the waste of additive liquid, thereby greatly reducing the energy consumption in the subsequent drying link, and has the advantages of wide application range and strong versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the installation position and use status of the utility model.

[0024] Figure 2 It is a structural schematic diagram of the utility model.

[0025] Figure 3 yes Figure 2 EE cross-sectional view in.

[0026] Description of the part numbers in the figure: 1. Liquid storage component, 1-1. Liquid storage barrel, 1-2. Stirring motor, 1-3. Stirring assembly, 1-3-1. Stirring shaft, 1-3-2. Stirring blade, 1-4. Low liquid level detector, 1-5. High liquid level detector, 1-6. Metering pump, 1-7. Barrel inlet connector, 1-8. Infusion pump, 1-9. Barrel outlet connector; 2. Liquid supply component, 2-1. Frame, 2-2. Bearing seat, 2-3. Speed ​​reducer motor, 2-4. Transmission assembly, 2-5. Liquid supply roller, 2-6. Main liquid tank, 2-7. U-shaped connecting vessel, 2-8. Auxiliary liquid tank, 2-9. Float, 2-10. Liquid level monitoring assembly, 2-11. Inlet air control valve, 2-12. Outlet air control valve, 2-13. Drain air control valve; 3. Control device; 4. Protective cover shell. DETAILED DESCRIPTION

[0027] The utility model will be further described below with reference to the accompanying drawings:

[0028] like Figure 1 to Figure 3 As shown, the utility model is a device capable of automatically and evenly feeding liquid to a spunlace nonwoven fabric, comprising a liquid storage component 1 and a liquid feeding component 2 connected by a fluid pipeline, and a control device 3 connected to the liquid storage component 1 and the liquid feeding component 2 by an electrical signal for controlling the flow of liquid (the main function of the liquid storage component 1 is to prepare, stir, temporarily store, and supply the additive liquid. The main function of the liquid feeding component 2 is to carry the additive liquid in the main liquid tank 2-6 and transfer it to the spunlace nonwoven fabric on the liquid feeding roller 2-5 through the rotation of the liquid feeding roller 2-5 , automatically and evenly feed the spunlace nonwoven fabric. After receiving the sensing signals from the low liquid level detector 1-4, the high liquid level detector 1-5, the liquid level monitoring component 2-10 and other sensing components, the control device 3 turns on or off the corresponding metering pump 1-6, the stirring motor 1-2, the infusion pump 1-8, the inlet air control valve 2-11, the outlet air control valve 2-12, the drain air control valve 2-13, the reduction motor 2-3 and other actuators to stably replenish the added liquid in the inner cavity of the main liquid tank 2-6 and replace the added liquid);

[0029] The liquid storage part 1 comprises a liquid storage barrel 1-1 (the liquid storage barrel 1-1 provides a place for preparing, stirring and temporarily storing the additive liquid), a stirring assembly 1-3 arranged on the top cover of the liquid storage barrel and rotating under the drive of the stirring motor 1-2 (the stirring assembly 1-3 is used to stir the additive liquid. That is, on the one hand, the concentrated liquid and the solvent automatically added to the liquid storage barrel 1-1 in proportion by the metering pump 1-6 are stirred, mixed and diluted to make the density of the additive liquid in the inner cavity of the liquid storage barrel 1-1 uniform; on the other hand, if powder additives are added, the stirring assembly 1-3 can To prevent the addition liquid from settling, a low level detector 1-4 and a high level detector 1-5 are embedded on the wall of the liquid storage barrel, and a barrel inlet connector 1-7 is connected to a plurality of metering pumps 1-6 through a fluid pipeline (the metering pump 1-6 is used to automatically prepare the addition liquid - that is, according to the required amount and concentration of the addition liquid, the metering pump 1-6 automatically mixes the required amount of concentrate and solvent in proportion for pumping, and pumps it into the inner cavity of the liquid storage barrel 1-1 through the barrel inlet connector 1-7, and then is stirred by the stirring component 1-3, and the density is obtained after stirring evenly. The low level detector 1-4 is used for the low level alarm of the added liquid in the barrel. After the control device 3 receives the sensing signal transmitted from the low level detector 1-4, it starts the metering pump 1-6 and starts to add the added liquid to the liquid storage barrel 1-1; the high level detector 1-5 is used for the high level alarm of the added liquid. After the control device 3 receives the sensing signal transmitted from the high level detector 1-5, it shuts down the metering pump 1-6 and stops adding the added liquid to the liquid storage barrel 1-1). The barrel connected to the inlet end of the infusion pump 1-8 through the fluid pipeline Outlet connector 1-9 (the infusion pump 1-8 provides pumping power for the additive liquid to be smoothly pumped from the liquid storage barrel 1-1 into the main liquid tank 2-6, and provides a guarantee for the stable replenishment of the additive liquid into the inner cavity of the main liquid tank 2-6. The barrel outlet connector 1-9 serves as a docking connector between the inner cavity of the liquid storage barrel 1-1 and the fluid pipeline, which facilitates the rapid connection between the inner cavity of the liquid storage barrel 1-1 and the infusion pump 1-8, ensures that the additive liquid flows out of the inner cavity of the liquid storage barrel 1-1 smoothly, and at the same time, in conjunction with the infusion pump 1-8, the additive liquid can be stably replenished into the inner cavity of the main liquid tank 2-6);

[0030] The liquid supply component 2 includes a frame 2-1 (providing a mounting base for other components in the liquid supply component 2), a liquid supply roller 2-5 which is mounted on the frame at both ends by means of a bearing seat 2-2 and rotates under the drive of a reduction motor 2-3 and a transmission component 2-4 (the bearing seat 2-2 is used to mount and support the liquid supply roller 2-5; the reduction motor 2-3 provides a driving force for the rotation of the liquid supply roller 2-5; the transmission component 2-4 transmits the driving force of the reduction motor 2-3 to the liquid supply roller 2-5; the rotating liquid supply roller 2-5 is driven by the reduction motor 2-3 and the transmission component 2-4. The roller 2-5 carries the additional liquid in the main liquid tank 2-6 and transfers it to the spunlaced nonwoven fabric passing through the top surface of the liquid feeding roller 2-5, and the moving speed is greater than the roller surface linear speed of the liquid roller 2-5. The speed difference and relative friction between the two can make the additional liquid carried by the liquid feeding roller 2-5 automatically and evenly transferred to the spunlaced nonwoven fabric, so as to realize the automatic and uniform liquid feeding of the spunlaced nonwoven fabric. The lower half roller of the liquid feeding roller is arranged in the upper inner cavity of the frame, and the lower half roller of the liquid feeding roller is soaked with the additional liquid, and the bottom of the cavity is connected to the outlet of the infusion pump 1-8 through a fluid pipeline. The main liquid tank 2-6 connected to the inlet end (the main liquid tank 2-6 is used to contain the additive liquid, and under the cooperation of the control device 3, the liquid level monitoring component 2-10, the infusion pump 1-8, and the inlet gas control valve 2-11, the main liquid tank 2-6 can be automatically and stably replenished with the additive liquid in a timely manner to ensure that the liquid level of the additive liquid in the main liquid tank 2-6 is higher than the low liquid level, effectively avoiding the occurrence of defective non-woven fabrics due to insufficient additive liquid), a secondary liquid tank 2-6 connected to the main liquid tank through a U-shaped communicating vessel 2-7 is fixed on the outside of the frame. The liquid tank 2-8 (the main liquid tank 2-6 and the auxiliary liquid tank 2-8 are connected by the U-shaped connecting vessel 2-7, so that the liquid levels in the two tanks can be the same. Therefore, real-time monitoring of the changes in the liquid level of the auxiliary liquid tank 2-8 is equivalent to real-time monitoring of the changes in the liquid level of the main liquid tank 2-6. At the same time, the auxiliary liquid tank 2-8 provides a floating space for the float 2-9), the float 2-9 floating in the inner cavity of the auxiliary liquid tank (when the float 2-9 floats in the added liquid of the auxiliary liquid tank 2-8, gravity and buoyancy are a pair of balanced action and reaction forces. Because the gravity of the float 2-9 does not change, the buoyancy does not change, that is, the volume and depth of the float 2-9 immersed in the added liquid are fixed.Therefore, when the height of the added liquid in the auxiliary liquid tank 2-8 changes, the height position of the float 2-9 changes synchronously, that is, by monitoring the height position change of the float 2-9 in real time, the height change of the liquid level in the auxiliary liquid tank 2-8 and the main liquid tank 2-6 can be known), the liquid level monitoring component 2-10 linked with the float (on the one hand, the liquid level monitoring component 2-10 is used to monitor the height position change of the float 2-9 in real time, that is, to monitor the height change of the auxiliary liquid tank 2-8 and the main liquid tank 2-6 in real time; on the other hand, the liquid level monitoring component 2-10 can timely feedback the height change of the main liquid tank 2-6 to the control device 3, whether it is necessary to feed the main liquid tank 2-6 to the control device 3 The fluid pipeline section between the main liquid tank 2-6 and the infusion pump 1-8 is connected in series with an inlet air-controlled valve 2-11 (used to open or close the fluid pipeline between the main liquid tank 2-6 and the liquid storage barrel 1-1), and the bottom of the main liquid tank 2-6 is connected to an external discharge pipeline equipped with an outlet air-controlled valve 2-12 (when it is necessary to replace new additive liquid, opening the outlet air-controlled valve 2-12 can open the external discharge pipeline and discharge the waste additive liquid in the main liquid tank 2-6 in time), and a drain air-controlled valve 2-13 is installed in the U-shaped communicating vessel 2-7 (when it is necessary to replace new additive liquid, opening the drain air-controlled valve 2-13 can discharge the waste additive liquid in the auxiliary liquid tank 2-8 in time);.

[0031] The control device 3 is respectively connected to the stirring motor 1-2, the low liquid level detector 1-4, the high liquid level detector 1-5, the metering pump 1-6, and the infusion pump 1-8 in the liquid storage component 1 by means of electrical signals; the control device 3 is respectively connected to the reduction motor 2-3, the inlet air control valve 2-11, the outlet air control valve 2-12, the discharge air control valve 2-13, and the liquid level monitoring component 2-10 in the liquid supply component 2 by means of electrical signals (after the control device 3 receives the sensing signal transmitted from the low liquid level detector 1-4, it starts the metering pump 1-6 and the stirring motor 1-2, and the metering pump 1-6 pumps the additional liquid into the inner cavity of the liquid storage barrel 1-1, and the stirring motor 1-2 uniformly stirs the additional liquid in the liquid storage barrel 1-1 to form an additional liquid with uniform density; after the control device 3 receives the sensing signal transmitted from the high liquid level detector 1-5, it turns off the metering pump 1-6 and stops pumping the additional liquid into the inner cavity of the liquid storage barrel 1-1; the control device 3 receives After receiving the lower warning line sensing signal from the liquid level monitoring component 2-10, the infusion pump 1-8 and the inlet air control valve 2-11 are turned on to pump the additional liquid in the inner cavity of the liquid storage barrel 1-1 into the inner cavity of the main liquid tank 2-6; after receiving the upper warning line sensing signal from the liquid level monitoring component 2-10, the control device 3 turns off the infusion pump 1-8 and the inlet air control valve 2-11 to stop pumping the additional liquid into the inner cavity of the main liquid tank 2-6. When it is necessary to replace new additional liquid , the control device 3 sends an opening command to the outlet air control valve 2-12 and the drain air control valve 2-13 to discharge the waste additive liquid in the main liquid tank 2-6, the U-shaped connecting vessel 2-7 and the auxiliary liquid tank 2-8 respectively. In addition, according to the moving speed of the spunlace nonwoven fabric, the control device 3 can also flexibly adjust the rotation speed of the reduction motor 2-3 to ensure that the roller surface linear speed of the liquid feeding roller 2-5 is less than the moving speed of the spunlace nonwoven fabric, that is, automatic liquid feeding can also ensure uniform liquid feeding).

[0032] The roller surface linear speed of the liquid feeding roller 2-5 described in the utility model is less than the moving speed of the spunlace nonwoven fabric (the speed difference and relative friction between the two can make the added liquid carried by the liquid feeding roller 2-5 automatically and evenly transferred to the spunlace nonwoven fabric, thereby realizing automatic and even liquid feeding of the spunlace nonwoven fabric; in actual application, the roller surface linear speed of the liquid feeding roller 2-5 is adjusted according to the required amount of liquid feeding - that is, the roller surface linear speed of the liquid feeding roller 2-5 is adjusted by adjusting the rotation speed of the reduction motor 2-3).

[0033] The auxiliary liquid tank 2-8 described in the utility model has the same tank depth as the main liquid tank 2-6, and is arranged at the same height (after the auxiliary liquid tank 2-8 and the main liquid tank 2-6 are connected through the U-shaped connecting vessel 2-7, the liquid levels in the two tanks are the same. The auxiliary liquid tank 2-8 and the main liquid tank 2-6 are designed to have the same tank depth and are arranged at the same height, which can more intuitively display the synchronization of the liquid levels in the inner cavities of the two).

[0034] The stirring assembly 1-3 in the utility model is composed of a stirring shaft 1-3-1 and a plurality of stirring blades 1-3-2 vertically mounted on the stirring shaft (the stirring motor 1-2 drives the stirring shaft 1-3-1 to rotate, and the stirring shaft 1-3-1 drives the stirring blades 1-3-2 to rotate synchronously. The stirring blades 1-3-2 evenly stir the added liquid in the inner cavity of the liquid storage barrel 1-1 during the rotation process, so that the density of the added liquid in the inner cavity of the liquid storage barrel 1-1 is consistent. When the stirring shaft 1-3-1 drives the stirring blades 1-3-2 to rotate, it can also effectively prevent the added liquid from precipitating when adding powder additives).

[0035] In the present invention, a protective cover shell 4 (to protect the safety of the operator) is fastened to the periphery of the transmission assembly 2 - 4 .

[0036] The stirring motor 1-2 described in the utility model is connected and fixed on the top cover of the liquid storage barrel 1-1 through a movable connecting piece; the reduction motor 2-3 is fixed to the outside of the frame 2-1 through a bolt connection, and the reduction motor 2-3 is a variable frequency speed regulating motor (the speed of the reduction motor 2-3 can be adjusted according to the user's demand for the amount of added liquid).

[0037] The specific usage of this utility model is as follows:

[0038] First, assemble the utility model according to the relative assembly relationship shown in the above structural description and the attached drawings, connect and debug each pipeline and component, and it can be used normally after the debugging is qualified, and select the speed of the reduction motor 2-3 according to the moving speed of the spunlace nonwoven fabric and the requirement of the liquid supply. Then, the liquid storage component 1 can prepare, stir, temporarily store and supply the additional liquid as needed under the control of the control device 3 - that is, the control device 3 starts the metering pump 1-6 after receiving the sensing signal transmitted from the low liquid level detector 1-4, and the metering pump 1-6 automatically mixes the required amount of concentrated liquid and solvent according to the required amount and concentration of the additional liquid for pumping, and pumps it into the inner cavity of the liquid storage barrel 1-1 through the barrel inlet joint 1-7, and then stirs it by the stirring component 1-3, and after stirring evenly, the additional liquid with uniform density is temporarily stored for standby; after receiving the sensing signal transmitted from the high liquid level detector 1-5, the control device 3 turns off the metering pump 1-6 and stops adding the additional liquid to the liquid storage barrel 1-1. Then, under the control of the control device 3, the liquid supply component 2 automatically and evenly supplies liquid to the spunlace nonwoven fabric - that is, with the help of the float 2-9 in the auxiliary liquid tank 2-8, which rises and falls synchronously with the change of the liquid level, and the liquid level monitoring component 2-10 linked with the float, the changes of the liquid levels of the auxiliary liquid tank 2-8 and the main liquid tank 2-6 are monitored in real time. At the same time, the liquid level monitoring component 2-10 promptly feeds back the changes of the liquid level of the main liquid tank 2-6 to the control device 3, and the control device 3 determines whether it is necessary to add additional liquid to the main liquid tank 2-6 or stop adding additional liquid: that is, when the control device 3 receives the lower warning line sensing signal transmitted by the liquid level monitoring component 2-10, it starts the infusion pump 1-8 and the inlet air control valve 2-11, and pumps the additional liquid in the inner cavity of the liquid storage barrel 1-1 into the main liquid tank 2-6; when the control device 3 receives the upper warning line sensing signal transmitted from the liquid level monitoring component 2-10, the infusion pump 1-8 and the inlet air control valve 2-11 are turned off, and the pumping of the added liquid into the inner cavity of the main liquid tank 2-6 is stopped; at the same time, the liquid feeding roller 2-5 in the liquid feeding component 2 is driven by the reduction motor 2-3 and the transmission component 2-4, and the roller surface linear speed is rotated at a speed lower than the moving speed of the spunlace non-woven fabric, and the lower half of the liquid feeding roller 2-5 is always immersed in the added liquid in the inner cavity of the main liquid tank 2-6, so that the speed difference and relative friction between the liquid feeding roller 2-5 and the spunlace non-woven fabric can make the added liquid carried by the liquid feeding roller 2-5 automatically and evenly transferred to the spunlace non-woven fabric, thereby realizing automatic and uniform liquid feeding to the spunlace non-woven fabric. Subsequently, the above process is repeated. The liquid storage component 1 can prepare, stir, temporarily store and supply the additive liquid as needed under the control of the control device 3. The liquid supply component 2 can automatically and evenly supply liquid to the spunlace nonwoven fabric under the control of the control device 3, thereby realizing unmanned automated operation and continuous production of the spunlace nonwoven fabric liquid supply process.

[0039] When you need to replace the new additive, the operation is as follows:

[0040] First, the control device 3 is used to send an opening command to the outlet air-controlled valve 2-12 and the drain air-controlled valve 2-13 to discharge the waste additive liquid in the main liquid tank 2-6, the U-shaped communicating vessel 2-7 and the auxiliary liquid tank 2-8 respectively; then, the metering pump 1-6 is started to add clean water to the liquid storage barrel 1-1, and the above-mentioned action process is repeated. After stirring, it is pumped into the main liquid tank 2-6, and the liquid feeding roller 2-5 is rotated, which drives the liquid in the main liquid tank 2-6 to impact and clean the main liquid tank 2-6, and then the main liquid tank 2-6 is emptied. The liquid in the main liquid tank 2-6 completes the cleaning of the liquid storage barrel 1-1, the main liquid tank 2-6, the liquid feeding roller 2-5 and the pipeline system; then, the liquid storage component 1 prepares, stirs, temporarily stores and supplies new additive liquid as needed, and the liquid feeding component 2 automatically and evenly feeds the new additive liquid to the spunlace nonwoven fabric, meeting the spunlace nonwoven fabric's demand for feeding various types of additive liquids, enriching the diversification of spunlace nonwoven fabric products, and having the advantages of wide application range and strong versatility.

Claims

1. A device capable of automatically and evenly feeding liquid to a spunlace nonwoven fabric, characterized in that: The device comprises a liquid storage component (1) and a liquid supply component (2) which are connected via a fluid pipeline, and a control device (3) which is connected to the liquid storage component (1) and the liquid supply component (2) via an electrical signal and is used to control the flow of liquid; The liquid storage component (1) comprises a liquid storage barrel (1-1), a stirring assembly (1-3) arranged on a top cover of the liquid storage barrel and rotating under the drive of a stirring motor (1-2), a low liquid level detector (1-4) and a high liquid level detector (1-5) embedded in the barrel wall of the liquid storage barrel, a barrel inlet joint (1-7) connected to a plurality of metering pumps (1-6) via a fluid pipeline, and a barrel outlet joint (1-9) connected to an inlet end of an infusion pump (1-8) via a fluid pipeline; The liquid supply component (2) comprises a frame (2-1), a liquid supply roller (2-5) which is mounted on the frame at both ends by means of bearing seats (2-2) and rotates under the drive of a reduction motor (2-3) and a transmission component (2-4), a main liquid tank (2-6) arranged in an upper inner cavity of the frame, containing an additive liquid to soak the lower half of the liquid supply roller, and the bottom of the cavity is connected to the outlet end of the infusion pump (1-8) through a fluid pipeline, and a main liquid tank (2-6) is fixed on the outer side of the frame to connect the bottom of the cavity through a U-shaped connecting tube. (2-7) an auxiliary liquid tank (2-8) connected to the main liquid tank, a float (2-9) floating in the inner cavity of the auxiliary liquid tank, and a liquid level monitoring component (2-10) linked to the float; an inlet air-controlled valve (2-11) is connected in series to the fluid pipeline section between the main liquid tank (2-6) and the infusion pump (1-8); an external discharge pipeline equipped with an outlet air-controlled valve (2-12) is connected to the bottom of the cavity of the main liquid tank (2-6); and a discharge air-controlled valve (2-13) is installed in the U-shaped communicating vessel (2-7); The control device (3) is respectively connected to the stirring motor (1-2), the low liquid level detector (1-4), the high liquid level detector (1-5), the metering pump (1-6), and the infusion pump (1-8) in the liquid storage component (1) by means of electrical signals; the control device (3) is respectively connected to the reduction motor (2-3), the inlet air control valve (2-11), the outlet air control valve (2-12), the discharge air control valve (2-13), and the liquid level monitoring component (2-10) in the liquid supply component (2) by means of electrical signals.

2. The device capable of automatically and evenly feeding liquid to spunlace nonwoven fabric according to claim 1, characterized in that: The roller surface linear speed of the liquid feeding roller (2-5) is lower than the moving speed of the spunlace nonwoven fabric.

3. The device capable of automatically and evenly feeding liquid to spunlace nonwoven fabric according to claim 1, characterized in that: The auxiliary liquid tank (2-8) has the same tank depth as the main liquid tank (2-6) and is arranged at the same height.

4. The device capable of automatically and evenly feeding liquid to spunlace nonwoven fabric according to claim 1, characterized in that: The stirring assembly (1-3) is composed of a stirring shaft (1-3-1) and a plurality of groups of stirring blades (1-3-2) vertically mounted on the stirring shaft.

5. The device capable of automatically and evenly feeding liquid to spunlace nonwoven fabric according to claim 1, characterized in that: A protective cover shell (4) is buckled onto the periphery of the transmission assembly (2-4).

6. The device capable of automatically and evenly feeding liquid to spunlace nonwoven fabric according to claim 1, characterized in that: The stirring motor (1-2) is connected and fixed to the top cover of the liquid storage barrel (1-1) via a movable connecting piece; the reduction motor (2-3) is fixed to the outside of the frame (2-1) via a bolt connection, and the reduction motor (2-3) is a variable frequency speed regulating motor.

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