Wet-process non-woven fabric inclined web forming device

Abstract

The utility model provides a wet-process non-woven fabric inclined laying device which comprises a headbox communicated with an outlet of a slushing pump and a dewatering box communicated with the headbox, an inclined net former is arranged in the dewatering box, a step diffuser is arranged on the headbox and comprises a step barrel arranged on the headbox, and the step barrel is connected with the dewatering box. An inlet of the stepped barrel is communicated with an outlet of the slushing pump through a pipeline, a plurality of filter plates are arranged in the stepped barrel and divide the stepped barrel into a plurality of diffusion cavities, a height adjusting assembly is further arranged in the headbox, and a buffer barrel is arranged on the lower portion of the height adjusting assembly; the interior of the buffer barrel is divided into a plurality of buffer cavities through partition plates which are staggered transversely and vertically, fiber suspension liquid can be fully dispersed through the step diffuser and then slowly released into the headbox, and certain micro-turbulence is generated; a large amount of water is dehydrated and uniform wet non-woven fabric is formed under the action of the oblique web former, so that the forming efficiency of the non-woven fabric is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to non - woven fabric production equipment technical field, concretely relates to a wet non - woven fabric oblique net forming device. BACKGROUND

[0002] In the production process of non-woven fabric, after opening, removing impurities and mixing, the fibers are fed into the main carding mechanism, and then the single fiber state is formed after further carding. Under the joint action of centrifugal force and airflow, the fibers fall off from the sawtooth of the card clothing, are transported by airflow and agglomerated on the netting curtain to form a fiber three-dimensional random arrangement web.

[0003] The wet non-woven fabric oblique net forming device is a device for producing non-woven fabric, which is characterized by adopting a special process to form a fiber web. In the wet non-woven fabric production process, first, the fiber material is dispersed in water to form a suspension, and then the fibers are deposited to form a uniform net structure by a specific method. "Oblique net forming" refers to adjusting the direction or speed of the fiber suspension flow during this process, so that the final formed fiber web has a certain inclination angle or special texture effect.

[0004] At present, there are many types of net forming devices for non-woven fabric production on the market. For example, the Chinese utility model patent with patent number "ZL202120188099.8" proposes a non-woven fabric production net forming device convenient to clean. The device adopts a "several" shaped double station structure and is provided with a wind adjusting mechanism to avoid accumulation of raw materials at the feed inlet and improve the quality of non-woven fabric.

[0005] The slurry discharge port of the traditional stepped diffuser in the net forming device is usually located at the upper part of the headbox, and multiple stepped diffusers and multiple slurry pumps connected with the slurry inlet ports of the stepped diffusers are usually required to be set during the injection of fiber slurry to carry out slurry diffusion operation, which greatly increases the unnecessary investment of equipment cost. Moreover, due to the setting of multiple slurry inlet ports at different positions and multiple stepped diffusers, the slurry entering the headbox is prone to large turbulence, greatly reducing the net forming quality and efficiency of the oblique net former. UTILITY MODEL CONTENTS

[0006] Therefore, the wet non-woven fabric inclined forming device can realize good dilution and stable conveying operation of the fiber slurry by the cooperation of the stepped barrel in the stepped diffuser and the height-adjustable buffer barrel, can fully and uniformly mix the fiber slurry with water in the headbox, can generate micro-turbulence to facilitate the formation of the fiber suspension with uniform concentration, and solves the problem that the slurry in the headbox is prone to large turbulence due to the multiple slurry inlets at different positions and the multiple stepped diffusers in the stepped diffuser of the traditional forming device, and greatly reduces the forming quality and efficiency of the inclined forming device.

[0007] To solve the above technical problems, the utility model provides a kind of wet non-woven fabric inclined forming device, including with the outlet of the slurry pump communication's headbox, with the headbox communication's dehydration tank, the inside of dehydration tank is provided with inclined net former, headbox is provided with stepped diffuser, stepped diffuser includes the stepped barrel being set on headbox, the import of stepped barrel is connected by pipeline with the outlet of the slurry pump, the inside of stepped barrel is provided with multiple filter plates, multiple filter plates separate stepped barrel into multiple diffusion cavities, headbox is also provided with height adjusting assembly, the lower part of height adjusting assembly is provided with buffer barrel, the inside of buffer barrel is separated into multiple buffer cavities by horizontal and vertical staggered partition, the utility model can generate certain pressure head in the process of conveying fiber by slurry pump, then after fiber suspension is fully dispersed by stepped diffuser, it is slowly released into headbox, and certain micro-turbulence is generated, cooperate the effect of inclined forming device, and a large amount of dehydration and uniform wet non-woven fabric are formed, solve the problem that the slurry outlet of the stepped diffuser in the traditional forming device is usually located at the upper portion of the headbox, and multiple stepped diffusers and multiple slurry inlets connected with the slurry inlets of the stepped diffusers are usually required to be set during the process of injecting fiber slurry to carry out slurry dispersion operation, which greatly increases unnecessary equipment cost investment, and due to the multiple slurry inlets at different positions and the multiple stepped diffusers, the slurry in the headbox is prone to large turbulence, which greatly reduces the stability of the inclined forming device.

[0008] Height adjusting assembly includes the fixed frame being set in the inside of both sides wall in the width direction of headbox, fixed frame is provided with telescopic push rod, the upper portion of buffer barrel is set in the lower portion of the output rod of telescopic push rod.

[0009] Inclined net former includes forming net being set in the inside of dehydration tank, forming net is inclined upward along non-woven fabric conveying direction, and the both ends of forming net are respectively provided with driving roller, and multiple breast rollers are rotationally arranged between two driving rollers.

[0010] Telescopic push rod is electric push rod or hydraulic push rod.

[0011] The lower part of the dewatering box is provided with a backwater inlet.

[0012] The bottom of each diffusion cavity is provided with a pulp leakage hole, and the lower part of each buffer cavity is provided with a pulp guide hole,

[0013] The part where the flow box is connected with the dewatering box is provided with a material blocking plate.

[0014] Compared with the prior art, the present application has at least one of the following beneficial technical effects:

[0015] 1. The utility model can realize the horizontal conveying of the pulp through the communication operation of the inlet of the pulp jetting pump and the inlet of the stepped barrel of the stepped diffuser, and the pulp can be diluted sufficiently through the layer-by-layer blocking and filtering of the filter plate in the stepped barrel, and then flow into the buffer barrel through the pulp leakage hole in the lower part and the end overflow, and then slowly flow into the flow box after the blocking and buffering of the buffer barrel, and form a certain micro-turbulence, which avoids the large turbulence generated in the mixing and slow release process of the pulp directly falling into the pulp jetting box and the water in the flow box when the stepped diffuser with the pulp outlet above the flow box is used in cooperation with multiple pulp jetting pumps, and the problem that the molding operation of the slanting net former is affected by the slurry is avoided through the partition design of the flow box and the dewatering box.

[0016] 2. The utility model can realize the operation of reducing the height of the pulp in the buffer barrel, the pulp guide hole below the buffer barrel and the flow box through the extension of the output rod of the telescopic push rod, and further realize the operation of further reducing the speed of the pulp after the speed reduction of the buffer barrel, which greatly reduces the micro-turbulence of the pulp in the flow box, and the operation is more convenient and efficient.

[0017] 3. The utility model can realize the filtering and recycling of the water in the pulp flowing through the molding net of the slanting net former through the dewatering box below the molding net, which is more energy-saving and environmentally friendly.

[0018] 4. The utility model can realize the centralized discharge, collection or recycling of the water in the dewatering box through the backwater inlet arranged in the lower part of the dewatering box, which greatly improves the utilization efficiency of water. DRAWINGS

[0019] Fig. 1 It is a structural schematic diagram of the wet process non-woven fabric slanting net forming device.

[0020] Fig. 2The utility model discloses a structure schematic diagram of the flow box and the ladder diffuser in the oblique net forming device of wet nonwoven fabric.

[0021] Mark explanation: 100, flow box;101, material baffle;200, dehydration tank;201, backwater mouth;300, oblique net former;301, forming net;302, drive roll;303, breast roll;400, ladder diffuser;410, ladder barrel;411, filter plate;412, diffusion cavity;420, height adjusting assembly;421, fixed frame;422, telescopic push rod;430, buffer barrel;431, partition;432, buffer cavity. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantage of the utility model embodiment more clear, below will combine the utility model embodiment's attached Figs. 1-2 , the technical scheme of the utility model embodiment is described clearly and completely. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiment. On the basis of the described embodiment of the utility model, all other embodiments obtained by the ordinary skill in the art belong to the scope of the utility model protection.

[0023] As Figs. 1-2 Shown: the utility model provides a kind of oblique net forming device of wet nonwoven fabric, including with the outlet of flow box 100 of the communication of slurry pump, with the communication of flow box 100 dehydration tank 200, the inside of dehydration tank 200 is provided with oblique net former 300, flow box 100 is provided with ladder diffuser 400, fiber suspension not only changes flow direction when entering ladder diffuser 400, while flow velocity also rapidly increases, however, after two-stage and three-stage diffusion, the kinetic energy of fiber suspension becomes static energy, generates high-intensity microturbulence, until keep to the net in flow box 100, ladder diffuser 400 includes setting on flow box 100 ladder barrel 410, the inlet of ladder barrel 410 is connected by pipeline with the outlet of slurry pump, the inside of ladder barrel 410 is provided with multiple filter plates 411, the aperture size of the filter hole of multiple filter plates 411 is sequentially reduced along the pumping direction of slurry, so that the fast and efficient multistage slow-release operation of slurry can be realized, multiple filter plates 411 divide ladder barrel 410 into multiple diffusion cavities 412, the bottom of each diffusion cavity 412 is provided with slurry leakage hole, flow box 100 is also provided with height adjusting assembly 420, the lower portion of height adjusting assembly 420 is provided with buffer barrel 430, the inside of buffer barrel 430 is divided into multiple buffer cavities 432 by horizontally and vertically staggered partition 431, the lower portion of each buffer cavity 432 is provided with slurry guide hole, the effect of improving the liquid inlet efficiency of slurry to a certain extent is realized by the cooperation of slurry leakage hole and slurry guide hole, greatly improve the efficient and stable slurry feeding operation of ladder diffuser 400;

[0024] The utility model discloses can produce certain pressure head in the process of conveying fiber through the pulp pump, then after the fiber suspension is dispersed fully through the ladder diffuser 400, it is slowly released into the headbox 100, and certain microturbulence is produced, and under the action of the oblique net former, a large amount of dewatering and the formation of uniform wet nonwoven cloth, solve the traditional net forming device in the ladder diffuser 400's pulp discharge port usually is located in the upper portion of headbox 100, and in the process of injecting fiber slurry, usually need to set up multiple ladder diffuser 400 and multiple pulp inlet of the communication of the ladder diffuser 400 and the pulp pump to carry out the dispersion operation of pulp, this leads to the unnecessary equipment cost input of greatly increasing, and because multiple different positions of pulp inlet and multiple ladder diffuser 400 setting, lead to the pulp in the headbox 100 of entering the turbulence of being prone to greatly, the stable performance of the oblique net former net forming operation is greatly reduced.

[0025] According to one embodiment of the utility model, as shown in Fig. 2 The height adjusting assembly 420 includes a fixed frame 421 arranged on the inner side of the side wall of the headbox 100 in the width direction, the fixed frame 421 is welded on the side wall of the headbox 100, the fixed frame 421 is provided with a telescopic push rod 422, the fixed end of the telescopic push rod 422 is fixedly arranged on the fixed frame 421, the telescopic push rod 422 is an electric push rod or a hydraulic push rod, the upper part of the buffer barrel 430 is arranged on the lower part of the output rod of the telescopic push rod 422, the utility model can realize the lifting operation of the buffer barrel 430 by starting the telescopic push rod 422, and then the height of the buffer barrel 430 and the pulp in the headbox 100 can be conveniently and quickly adjusted, and the size of the microturbulence of the pulp in the headbox 100 can be conveniently and quickly adjusted, and the operation is more convenient and efficient.

[0026] According to another embodiment of the utility model, as shown in Fig. 1As shown, the inclined net former 300 comprises a forming net 301 arranged inside the dewatering tank 200, the forming net 301 is arranged upwardly inclined along the non-woven fabric conveying direction, and two ends of the forming net 301 are respectively provided with driving rollers 302, and the outer side of one of the driving rollers 302 is provided with a driving member for driving the rotation thereof, the output shaft of the driving member is in transmission connection with the output shaft of the driving roller 302, and a plurality of breast rollers 303 are rotationally arranged between the two driving rollers 302, the forming net 301 on the driving roller 302 can be driven to rotate together with the driving roller 302 and the breast rollers 303 through the transmission connection of the output shaft of the motor with one of the driving rollers 302, so that the wet non-woven fabric formed on the forming net 301 can be quickly and efficiently formed, and the operation is more convenient and efficient.

[0027] The lower part of the dewatering tank 200 is provided with a backwater inlet 201, and the backwater inlet 201 is in communication with the flow box 100 through a backwater pipe, the water falling through the mesh of the forming net 301 can be collected and collected through the action of the dewatering tank 200, and the water can be guided to the flow box 100 again through the backwater inlet 201 for recycling, which is more environmentally friendly and energy-saving.

[0028] The part where the flow box 100 is connected with the dewatering tank 200 is provided with a blocking plate 101, which is convenient for blocking the pulp inside the dewatering tank 200, and can avoid backflow into the flow box 100, the pulp inside the flow box 100 can be blocked by the blocking plate 101, and the pulp on the forming net 301 of the inclined net former can be blocked, so that it can fall through the mesh of the forming net 301 and be collected in the dewatering tank 200, and backflow into the flow box 100 is avoided.

[0029] The use method of the utility model:

[0030] First of all, it needs to be clear that the inclined net forming device involved in the utility model is mainly used for the production operation of non-woven fabric, and the use method of the utility model is described in detail taking the forming operation of wet non-woven fabric as an example;

[0031] When the wet non-woven fabric needs to be formed, the output shaft of the driving member is started to rotate with the driving roller 302, and then the forming net 301 is rotated. The slurry with sufficient micro-turbulence in the flow box 100 cooperates with the rotating forming net 301 to keep the continuous and stable net forming operation. Since the fiber forming is neither like the long net former that sprays slurry forming, nor like the circular net former that hangs slurry forming, but the fiber is in a fully suspended state, after dehydration on the net, it is vertically deposited. That is, the fiber is rarely subjected to external force in the forward direction of the net to change the direction of the fiber, only subjected to a larger vacuum suction force in the vertical direction, so that the inclined net former can dehydrate and form a uniform wet non-woven fabric in a short area, and the water discharged is also collected by the dehydration tank 200;

[0032] When the micro-turbulence in the flow box 100 needs to be adjusted, the output rod of the telescopic push rod 422 can be extended and retracted to achieve the adjustment. By extending the output rod of the telescopic push rod 422, the height of the buffer tank 430 and the slurry guide hole below it and the slurry in the flow box 100 can be reduced, further reducing the micro-turbulence of the slurry in the flow box 100. By retracting the output rod of the telescopic push rod 422, the height of the buffer tank 430 and the slurry guide hole below it and the slurry in the flow box 100 can be increased to increase the micro-turbulence of the slurry in the flow box 100.

[0033] When the wet non-woven fabric needs to be formed, the output shaft of the driving member is started to rotate with the driving roller 302, and then the forming net 301 is rotated. The slurry with sufficient micro-turbulence in the flow box 100 cooperates with the rotating forming net 301 to keep the continuous and stable net forming operation. Since the fiber forming is neither like the long net former that sprays slurry forming, nor like the circular net former that hangs slurry forming, but the fiber is in a fully suspended state, after dehydration on the net, it is vertically deposited. That is, the fiber is rarely subjected to external force in the forward direction of the net to change the direction of the fiber, only subjected to a larger vacuum suction force in the vertical direction, so that the inclined net former can dehydrate and form a uniform wet non-woven fabric in a short area, and the water discharged is also collected by the dehydration tank 200;

[0034] The utility model discloses can realize that one dilution and the steady conveyance of fibre pulp of one step diffuser 400 of one slurry pump cooperation reach good through the cooperation of step bucket 410 in step diffuser 400 and height adjustable buffer bucket 430, make it and the water in the flow box 100 inside fully even mixing, and produce micro turbulence and facilitate the formation of concentration uniform fibre suspension, solved the step diffuser 400 in the traditional netting device because of multiple different positions of the inlet of pulp and multiple step diffuser 400 setting, lead to the pulp in the flow box 100 in the liquid extremely easy to have greater turbulence, greatly reduced the netting quality and efficiency of the oblique netting machine problem.

[0035] In addition, it also needs to be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly in the description of the utility model, for example, can be fixed connection, can also be detachable connection, or integrally connected, can be mechanical connection, can also be electrical connection, can be directly connected, can also be indirectly connected through the intermediate medium, can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0036] The above is the preferred embodiment of the utility model, it should be pointed out that, for ordinary skilled person in the art, without departing from the principle described in the utility model, can also make a number of improvements and refinements, these improvements and refinements also should be considered as the protection scope of the utility model.

Claims

1. A wet-laid nonwoven oblique forming device, comprising a headbox (100) in communication with the outlet of a pulp pump, a dewatering box (200) in communication with the headbox (100), the inside of the dewatering box (200) being provided with an oblique web former (300), characterized in that: The headbox (100) is provided with a stepped diffuser (400), the stepped diffuser (400) comprises a stepped barrel (410) arranged on the headbox (100), the inlet of the stepped barrel (410) is communicated with the outlet of the headbox (100) through a pipeline, the inside of the stepped barrel (410) is provided with a plurality of filter plates (411), the plurality of filter plates (411) separate the stepped barrel (410) into a plurality of diffusion cavities (412), and the headbox (100) is further provided with a height adjusting assembly (420), the lower portion of the height adjusting assembly (420) is provided with a buffer barrel (430), and the inside of the buffer barrel (430) is separated into a plurality of buffer cavities (432) through horizontally and vertically staggered partition plates (431).

2. The wet-laid nonwoven web inclined web-forming apparatus of claim 1, wherein: The height adjusting assembly (420) comprises a fixing frame (421) arranged on the inner side of the two side walls in the width direction of the headbox (100), the fixing frame (421) is provided with a telescopic push rod (422), and the upper portion of the buffer barrel (430) is arranged on the lower portion of the output rod of the telescopic push rod (422).

3. The wet-laid nonwoven web inclined web-forming apparatus of claim 2, wherein: The inclined net former (300) comprises a forming net (301) arranged in the inside of the dewatering box (200), the forming net (301) is arranged to be inclined upward along the non-woven fabric conveying direction, and the two ends of the forming net (301) are respectively provided with driving rollers (302), and a plurality of breast rollers (303) are rotationally arranged between the two driving rollers (302).

4. The wet-laid nonwoven web inclined web-forming apparatus of claim 3, wherein: The telescopic push rod (422) is an electric push rod or a hydraulic push rod.

5. The wet-laid nonwoven web inclined web-forming apparatus of claim 4, wherein: The lower portion of the dewatering box (200) is provided with a water return port (201).

6. The wet-laid nonwoven web inclined web-forming apparatus of claim 5, wherein: The bottom of each diffusion cavity (412) is provided with a pulp leakage hole, and the lower portion of each buffer cavity (432) is provided with a pulp guide hole.

7. The wet-laid nonwoven web inclined web-forming apparatus of claim 6, wherein: The position, where the headbox (100) is connected with the dewatering box (200), is provided with a material blocking plate (101).

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