Embossing melt-blowing filter element processing device

Abstract

The utility model discloses an outer surface embossing melt-blowing filter element processing device, which comprises a transmission mechanism and a melt-blowing mechanism, the transmission mechanism comprises a receiving roller, the output end of the receiving roller is sleeved with a conical rod, the transmission mechanism further comprises a hollow dragging rod, the dragging rod comprises an input end and an output end, the receiving roller and the dragging rod are coaxial, and the output end of the receiving roller is sleeved with a conical rod. The inner wall of a center hole of the dragging rod is provided with an internal thread, the dragging rod rotates along the axis of the dragging rod, the melt-blowing mechanism comprises a spinning mechanism arranged at the top of the receiving roller, the spinning mechanism comprises at least one group of spinning holes arranged along the axial direction of the receiving roller, and the diameters of the spinning holes in each group are different; and the aperture is gradually reduced towards the output end of the receiving roller. According to the scheme, embossing is synchronously conducted on the surface of the filter element while the filter element is conveyed, and the supporting strength, precision and machining efficiency of the filter element are improved; spinning holes with different diameters are used for spinning on the receiving roller to form a filtering layer structure with stepped filtering precision.

Description

Technical Field

[0001] The utility model relates to the field of melt-blown filter element processing equipment, in particular to an embossed melt-blown filter element processing device. Background Art

[0002] Meltblown filter elements are tubular filter elements made of non-toxic and tasteless polypropylene particles through heating, melting, spinning, pulling, and forming. Common meltblown filter elements, such as meltblown filter elements with polypropylene as the main raw material, are called PP meltblown filter elements. Meltblown filter elements are not only used in large quantities in water purification, but also have excellent chemical compatibility and are suitable for filtering strong acids, strong alkalis and organic solvents. At the same time, they also have the advantages of strong pollution holding capacity, long service life and low cost.

[0003] In the preparation process of melt-blown filter elements, it is usually necessary to spray the melt-blown filaments onto a rotating receiving roller through a spinneret, and pull out the filter element formed after spinning by mechanical or manual dragging and cut it according to the required length. In the prior art, a screw is usually arranged at the output end of the receiving roller, and the friction between the inner surface of the filter element and the screw is increased by the threads arranged on the outer circumference of the screw, so that the filter element is output by pulling as the screw rotates. For example, a utility model patent with authorization announcement number CN203159864U discloses a traction mechanism for PP filter element processing, including a base, a first motor and a second motor installed on the base, a rotating rod, and a spindle-shaped screw head. The first motor is located on the left side of the second motor, the first motor controls the rotation of the rotating rod, and the second motor controls the rotation of the spindle-shaped screw head. The spindle-shaped screw head is nested in the rotating rod, and the outer wall of the rotating rod is provided with a plurality of convex tendons. The utility model provides a traction mechanism for PP filter element processing, and a convex tendon for increasing friction is arranged on the rotating rod to prevent the PP filter element from slipping thereon, and a spindle-shaped screw head is designed. The above-mentioned embossed melt-blown filter element processing device is simple in design and easy to implement, but only flat filter elements can be processed by this device.

[0004] The embossed filter element is a tubular filter element made by heating, melting, spinning, pulling, and receiving forming. Usually, the embossed filter element is first made into a flat PP filter element and then embossed for the second time. There are shallow circles on the surface of the filter element, which makes the internal structure of the PP cotton filter element more rigorous, so that the precision is higher and the filtering effect is better. In addition, the filter element can add a central rod support to improve the strength, and there are a variety of hot melt joint types to meet more installation needs. However, the existing embossed melt-blown filter element processing device cannot realize the output and embossing of the melt-blown filter element simultaneously, and can only realize the embossed filter element processing of a single filter layer. Utility Model Content

[0005] Therefore, in order to solve the above problems, the utility model provides an embossed melt-blown filter element processing device.

[0006] The utility model is realized by the following technical solutions:

[0007] An embossed melt-blown filter element processing device comprises a transmission mechanism and a melt-blowing mechanism, wherein the transmission mechanism comprises a receiving roller, the output end of the receiving roller is sleeved with a tapered rod, the receiving roller and the tapered rod rotate synchronously along their axes, the transmission mechanism also comprises a hollow drag rod, the drag rod comprises an input end and an output end, the receiving roller is coaxial with the drag rod, and the end of the tapered rod with a smaller diameter is inserted from the input end of the drag rod into the center hole of the drag rod, an internal thread is arranged on the inner wall of the center hole of the drag rod, the drag rod rotates along its axis, and its rotation direction is consistent with the rotation direction of the receiving roller, the melt-blowing mechanism comprises a spinneret mechanism arranged on the top of the receiving roller, the spinneret mechanism comprises at least one group of spinneret holes arranged along the axial direction of the receiving roller, when the spinneret holes have multiple groups, the aperture of each group of spinneret holes is different, and the apertures of the multiple groups of spinneret holes gradually decrease toward the output end of the receiving roller.

[0008] Preferably, the receiving roller is driven by a first motor and drives the tapered rod to rotate synchronously along the axis, the dragging rod is driven by a second motor to rotate along the axis, and the rotation speed of the second motor is greater than that of the first motor.

[0009] Preferably, n (n>1) spinnerets are arranged at the top of the receiving roller along the axial direction of the receiving roller, each spinneret has spinneret holes arranged along the axial direction of the receiving roller, and the spinneret holes on the spinneret closer to the output end of the receiving roller have smaller apertures.

[0010] Preferably, at least one spinneret near one end of the conical rod has two rows of spinneret holes staggered along the axial direction of the receiving roller, and the spinneret holes on the spinneret closer to the output end of the receiving roller have smaller apertures.

[0011] Preferably, a spinneret is provided on the top of the receiving roller, and the spinneret has n groups of spinneret holes arranged along the length direction of the receiving roller, each group of spinneret holes has a different aperture, and the apertures of the multiple groups of spinneret holes gradually decrease toward the output end of the receiving roller.

[0012] Preferably, it comprises a slide seat arranged at the bottom of the dragging rod, the slide seat is provided with two slide grooves in parallel, the length direction of the slide grooves is parallel to the axis of the dragging rod, the outer periphery of the dragging rod is provided with a first bearing seat and a second bearing seat, the first bearing seat and the second bearing seat are arranged at intervals, and sliders are arranged on both sides of the first bearing seat and the second bearing seat for translation along the two slide grooves. The sliders are provided with locking bolts to fix the dragging rod in a suitable position.

[0013] Preferably, a first synchronous wheel is also provided on the outer periphery of the drag rod, the first synchronous wheel is arranged between the first bearing seat and the second bearing seat, the second motor is connected to the second synchronous wheel and drives the second synchronous wheel to rotate, and the first synchronous wheel and the second synchronous wheel are connected by a synchronous belt.

[0014] Preferably, the taper of the tapered rod is 50:1.

[0015] Preferably, the first motor and the second motor are both synchronous motors and are controlled by high-precision frequency converters.

[0016] The beneficial effects of the technical solution of the utility model are mainly reflected in:

[0017] 1. In the transmission mechanism, the receiving roller and the dragging rod which are separately arranged and have different rotation speeds are used to synchronously realize the receiving of the meltblown filaments, the conveying and the forming of the meltblown filter element. The tapered rod at the end of the receiving roller is convenient for guiding the meltblown filter element after the spinning is completed into the dragging rod. The friction formed by the internal thread on the inner wall surface of the center hole of the dragging rod and the outer peripheral surface of the meltblown filter element guides the output of the filter element, and synchronously forms embossing on the outer peripheral surface of the filter element, which can reduce the processing procedures of the embossed filter element and improve the processing efficiency. At the same time, since the filter element is basically conveyed and embossed synchronously after meltblowing, the time difference between the meltblowing process and the embossing process can be shortened as much as possible, and the pressing effect of the meltblown filter element can be further improved.

[0018] 2. The meltblowing mechanism uses multiple groups of spinneret holes with different diameters to spin the receiving roller, wherein the spinneret holes closer to the push rod (i.e., the output end of the receiving roller) have smaller apertures, so that a filter layer structure with multiple layers of meltblown filaments of different thicknesses and a stepped filtering accuracy can be formed outside the receiving roller. In addition, in a preferred embodiment, the ejection amount of finer meltblown filaments can be increased by increasing the aperture of the spinneret holes with smaller diameters, so that the filtering accuracy and porosity of the meltblown filter element are also improved accordingly, and the capacity for holding fine-particle impurities is increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a working schematic diagram of the transmission mechanism and the melt-blowing mechanism;

[0020] Figure 2 It is a schematic diagram of the transmission structure of the drag rod in the transmission mechanism;

[0021] Figure 3 It is a working schematic diagram of the meltblowing mechanism in Example 1;

[0022] Figure 4 It is a working schematic diagram of the meltblowing mechanism in Example 2;

[0023] Figure 5 It is a working schematic diagram of the meltblowing mechanism in Example 3;

[0024] Figure 6 It is a schematic diagram of the arrangement of meltblown filaments with different meltblown holes on the surface of the receiving roller and the filter layers of the prepared meltblown filter element. DETAILED DESCRIPTION

[0025] In order to make the purpose, advantages and features of the utility model more clearly and in detail, the following preferred embodiments are illustrated and explained through non-limiting descriptions. This embodiment is only a typical example of the application of the technical solution of the utility model. Any technical solution formed by equivalent replacement or equivalent transformation falls within the scope of protection required by the utility model.

[0026] At the same time, it is stated that in the description of the scheme, it should be noted that the directions or positional relationships indicated by the terms "center", "up", "down", "left", "right", "front", "back", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of description and simplified description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model.

[0027] In addition, the terms "first" and "second" in this solution are only used for descriptive purposes and cannot be understood as indicating or implying the order of importance, or implicitly indicating the number of technical features shown. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In this utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0028] The utility model discloses an embossed melt-blown filter element processing device, such as Figure 1 , Figure 2 As shown, it includes a transmission mechanism and a melt-blowing mechanism, the transmission mechanism includes a receiving roller 1, the output end of the receiving roller 1 is sleeved with a tapered rod 2, the receiving roller 1 and the tapered rod 2 rotate synchronously along their axes, the transmission mechanism also includes a hollow drag rod 3, the drag rod 3 includes an input end and an output end, the receiving roller 1 is coaxial with the drag rod 3, and the end of the tapered rod 2 with a smaller diameter is inserted from the input end of the drag rod 3 into the center hole of the drag rod 3. In a preferred embodiment, a tapered rod 2 with a taper of 50:1 is used. In some other embodiments, the tapered rod 2 can also use other tapers, which will not be repeated here. In actual application, the filter element 4 located near the tapered rod 2 on the periphery of the receiving roller 1 is pulled to the periphery of the tapered rod 2 (at this time, the filter element 4 reaches the specified spinneret thickness and is in a loose state), and then the filter element 4 is inserted into the drag rod 3.

[0029] like Figure 1As shown, an internal thread 301 is provided on the inner wall of the center hole of the drag rod 3, and the internal thread 301 on the inner wall of the drag rod 3 is embedded from the outer peripheral surface of the filter element 4, further increasing the friction between the two, thereby ensuring that the filter element 4 is transported from the input end of the drag rod 3 to the output end of the drag rod 3, and also exerting an extrusion force on the filter element 4. Since the filter element 4 is in a soft state when entering the drag rod 3 and is gradually cooled and formed during the transportation process, it is ensured that when the filter element 4 is output from the drag rod 3, a thread-shaped embossing is formed on its surface. The density and thickness of the internal thread 301 of the drag rod 3 can be adjusted as needed, which will not be elaborated here.

[0030] like Figure 1 As shown, the drag rod 3 rotates along its axis, and its rotation direction is consistent with the rotation direction of the receiving roller 1, and the rotation speed of the drag rod 3 is slightly greater than the rotation speed of the receiving roller 1, further helping the filter element 4 to output; in some embodiments, the receiving roller 1 is driven by a first motor 11 and drives the cone rod 2 to rotate synchronously along the axis, and the drag rod 3 is driven by a second motor 12 to rotate along the axis, and the rotation speed of the second motor 12 is greater than the rotation speed of the first motor 11.

[0031] like Figure 2 As shown, in a preferred embodiment, a slide seat 6 is provided at the bottom of the drag rod 3, and two slide grooves 601 are arranged in parallel on the slide seat 6, and the length direction of the slide groove 601 is parallel to the axis of the drag rod 3. The outer periphery of the drag rod 3 is sleeved with a first bearing seat 7 and a second bearing seat 8, and the first bearing seat 7 and the second bearing seat 8 are arranged at intervals, and sliders that translate along the two slide grooves 601 are arranged on both sides of the first bearing seat 7 and the second bearing seat 8. A first synchronous wheel 9 is also provided on the outer periphery of the drag rod 3, and the first synchronous wheel 9 is arranged between the first bearing seat 7 and the second bearing seat 8. The second motor 12 is connected to the second synchronous wheel 10 and drives the second synchronous wheel 10 to rotate. The first synchronous wheel 9 and the second synchronous wheel 10 are connected by a synchronous belt 13, and ensure that the second motor 12 synchronously drives the first synchronous wheel 9 and the second synchronous wheel 10 to rotate, and then drives the drag rod 3 to rotate. Since the first synchronous wheel 9 is arranged between the first bearing seat 7 and the second bearing seat 8, the stability of the rotation of the drag rod 3 can be ensured.

[0032] In a preferred embodiment, the first motor 12 and the second motor 11 are both synchronous motors and are controlled by a high-precision frequency converter, and ensure that the rotation speed of the second motor 12 is slightly greater than the rotation speed of the first motor 11, thereby ensuring that during actual operation, the filter element whose surface has not been completely solidified is dragged into the center hole of the drag rod 3, so that the filter element 4 is dragged forward and cooled and solidified while embossing is generated on its surface.

[0033] like Figure 3-Figure 5As shown, the meltblowing mechanism includes a spinneret mechanism arranged on the top of the receiving roller 1, and the spinneret mechanism includes at least one group of spinneret holes arranged along the axial direction of the receiving roller 1. When there are multiple groups of spinneret holes, the aperture of each group of spinneret holes is different, and the apertures of the multiple groups of spinneret holes gradually decrease toward the output end of the receiving roller 1.

[0034] In practical applications, the setting of the spinning mechanism can have a variety of embodiments, including at least but not limited to the following situations:

[0035] Embodiment 1:

[0036] The top of the receiving roller 1 is provided with n (n>1) spinnerets 5 arranged along the axial direction of the receiving roller 1, and each spinneret 5 is provided with spinneret holes arranged along the axial direction of the receiving roller 1, and the spinneret holes on the spinneret 5 closer to the output end of the receiving roller 1 are smaller in diameter, thereby forming a multi-layer filter element 4 with gradually increasing filtering accuracy from the inside to the outside, such as Figure 3 , Figure 6 As shown, the diameter of the spinneret hole on the spinneret A is the diameter of the spinneret hole on the spinneret N. Further, a plurality of groups of spinneret holes with different diameters may be provided on the same spinneret 5. Accordingly, the diameter of the spinneret hole on the spinneret 5 closer to the output end of the receiving roller 1 on the same spinneret 5 is smaller, as shown in FIG. Figure 3 As shown, the diameter of the spinneret hole 501a on the spinneret A is smaller than the diameter of the spinneret hole 501b, and the diameter of the spinneret hole 501c on the spinneret N is smaller than the diameter of the spinneret hole 501d. Figure 6 As shown, after the filter element is formed, the meltblown filament a ejected from the spinneret 501a forms the filter layer a located in the innermost layer of the filter element, and the meltblown filaments b, c, and d ejected from the spinneret 501b, 501c, and 501d form the filter layer b, the filter layer c, and the filter layer d in turn, wherein the spinneret 501a is arranged above the input end of the receiving roller 1, so the meltblown filament a ejected from it is laid on the bottom layer, and then the filter layer a on the receiving roller 1 is transported along the axial direction of the receiving roller, and passes through the bottom of the spinneret 501b, 501c, and 501d in turn, and is stacked in turn to form the filter layer b, the filter layer c, and the filter layer d, and at the same time, in each filter layer of the filter element 4, the filtration accuracy gradually increases from the filter layer a to the filter layer d, and ensures that the filter element 4 located at the output end of the receiving roller 1 has been stacked to reach the required filter layer and thickness.

[0037] Embodiment 2:

[0038] On the basis of the first embodiment, two rows of spinneret holes may be arranged alternately along the axial direction of the receiving roller 1 on at least one spinneret plate 5 near one end of the conical rod 2, and the spinneret hole diameter on the spinneret plate 5 closer to the output end of the receiving roller 1 is smaller. At this time, the melt-blown filaments sprayed by the spinneret plate 5 with double rows of spinneret holes to the receiving roller 1 are finer, and the amount of spinneret holes is doubled, thereby further improving the amount of spinneret holes of the high-precision filter layer. Therefore, the filtration accuracy and porosity of the filter element 4 are also improved accordingly, and the capacity of fine-particle impurities is increased, such as Figure 4 , Figure 6 As shown, two rows of spinneret holes 501c and spinneret holes 501d are arranged on the spinneret plate N. Therefore, the melt-blown yarn cost of filter layer c and filter layer d of the filter element 4 prepared by the device is increased relative to that of filter layer a and filter layer b, and the filtering accuracy is further improved.

[0039] In the above-mentioned embodiment 1 and embodiment 2, different spinnerets 5 can also replace melt-blown materials with different functions, thereby forming different filtering function layers in the filter element 4.

[0040] Embodiment three:

[0041] A spinneret 5 is disposed on the top of the receiving roller 1. The spinneret 5 has n groups of spinneret holes arranged along the length direction of the receiving roller 1. The apertures of each group of spinneret holes are different, and the apertures of the multiple groups of spinneret holes gradually decrease toward the output end of the receiving roller 1. Figure 5 , Figure 6 As shown, the spinneret 5 is provided with spinneret holes 501a, 501b, 501c and 501d in sequence along the length direction of the receiving roller 1, and the spinneret hole 501d is close to the output end of the receiving roller 1. The apertures from the spinneret hole 501a to the spinneret hole 501d gradually become smaller, and filter layers a, b, c and d with gradually increasing filtering accuracy are formed in sequence.

[0042] like Figure 1 As shown, in other embodiments, a cutting mechanism 14 can also be provided at the output port of the drag rod 3 for cutting the shaped filter element 4. The specific structure of the cutting mechanism can refer to any cutting device capable of cutting a melt-blown filter element in the prior art, which will not be described in detail here.

[0043] There are many implementation methods of the utility model, and all technical solutions formed by equivalent transformation or equivalent transformation fall within the protection scope of the utility model.

Claims

1. Embossed melt-blown filter element processing device, characterized in that: It includes a transmission mechanism and a meltblowing mechanism, the transmission mechanism includes a receiving roller, the output end of the receiving roller is sleeved with a tapered rod, the receiving roller and the tapered rod rotate synchronously along their axes, the transmission mechanism also includes a hollow drag rod, the drag rod includes an input end and an output end, the receiving roller is coaxial with the drag rod, and the end of the tapered rod with a smaller diameter is inserted from the input end of the drag rod into the center hole of the drag rod, the inner wall of the center hole of the drag rod is provided with an internal thread, the drag rod rotates along its axis, and its rotation direction is consistent with the rotation direction of the receiving roller, the meltblowing mechanism includes a spinneret mechanism arranged on the top of the receiving roller, the spinneret mechanism includes at least one group of spinneret holes arranged along the axial direction of the receiving roller, when the spinneret holes have multiple groups, the aperture of each group of spinneret holes is different, and the apertures of the multiple groups of spinneret holes gradually decrease toward the output end of the receiving roller.

2. The embossed meltblown filter element processing device according to claim 1, characterized in that: The receiving roller is driven by a first motor and drives the tapered rod to rotate synchronously along the axis. The dragging rod is driven by a second motor to rotate along the axis, and the rotation speed of the second motor is greater than that of the first motor.

3. The embossed meltblown filter element processing device according to claim 1, characterized in that: The top of the receiving roller is provided with n spinnerets arranged along the axial direction of the receiving roller, where n>1, and each spinneret is provided with spinneret holes arranged along the axial direction of the receiving roller, and the spinneret holes on the spinneret closer to the output end of the receiving roller have smaller apertures.

4. The embossed meltblown filter element processing device according to claim 1, characterized in that: At least one spinneret near one end of the cone rod has two rows of spinneret holes staggeredly arranged along the axial direction of the receiving roller, and the spinneret holes on the spinneret closer to the output end of the receiving roller have smaller diameters.

5. The embossed meltblown filter element processing device according to claim 1, characterized in that: A spinneret is arranged on the top of the receiving roller, and the spinneret has n groups of spinneret holes arranged along the length direction of the receiving roller. The aperture of each group of spinneret holes is different, and the apertures of the multiple groups of spinneret holes gradually decrease toward the output end of the receiving roller.

6. The embossed melt-blown filter element processing device according to claim 2, characterized in that: It includes a sliding seat arranged at the bottom of the drag rod, two sliding grooves are arranged in parallel on the sliding seat, the length direction of the sliding groove is parallel to the axis of the drag rod, the outer peripheral sleeve of the drag rod is provided with a first bearing seat and a second bearing seat, the first bearing seat and the second bearing seat are arranged at intervals, and sliding blocks that translate along the two sliding grooves are arranged on both sides of the first bearing seat and the second bearing seat, and locking bolts are attached to the sliding blocks to fix the drag rod in a suitable position.

7. The embossed melt-blown filter element processing device according to claim 6, characterized in that: A first synchronous wheel is also provided on the outer periphery of the drag rod, and the first synchronous wheel is provided between the first bearing seat and the second bearing seat. The second motor is connected to the second synchronous wheel and drives the second synchronous wheel to rotate. The first synchronous wheel and the second synchronous wheel are connected by a synchronous belt.

8. The embossed melt-blown filter element processing device according to claim 1, characterized in that: The taper of the tapered rod is 50:

1.

9. The embossed meltblown filter element processing device according to claim 2, characterized in that: The first motor and the second motor are both synchronous motors and are controlled by high-precision inverters.

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