Composite filter element winding device and composite filter element preparation method

Abstract

The present invention discloses a composite filter element winding device, including a spinning assembly, a winding assembly, an anti-curing mechanism and a tension control assembly. This solution increases the bonding degree between filter layers and the compressive performance of the filter element, saves processing steps, and the filter cloth type of the filter element is not limited. At the same time, the filtering accuracy and filtering function of different filter layers can be flexibly controlled to achieve a gradual change in the filtering accuracy of the melt-blown filter layer and a diversification of the filtering function.

Description

Technical Field

[0001] The invention relates to the field of filter element processing, and in particular to a composite filter element winding device and a method for preparing the composite filter element. Background Art

[0002] Meltblown filter element is a tubular filter element made of non-toxic and tasteless polypropylene particles through heating, melting, spinning, pulling and winding. The surface density of the filter element is low, and the density gradually increases from the surface to the center of the filter element due to the overlap of the filter holes between the filter layers. It has a good filtering effect on particles of different diameters and has a wide range of applications. It is not only used in large quantities in water purification, but also has excellent chemical compatibility and is suitable for the filtration of strong acids, strong alkalis and organic solvents. It has a strong dirt holding capacity, a long service life and a low production cost.

[0003] The process of winding meltblown filter cloth usually requires heating and melting polypropylene particles and then extruding them into spinnerets, pulling and stretching them into filaments and then rolling them up to make filter cloth, and then winding and cutting the filter cloth. The preparation of composite filter elements requires combining different meltblown filter cloths during winding. The combination of composite filter elements mainly includes the following methods:

[0004] (I) Glue is pre-applied on the filter core shaft / skeleton to fix the filter cloth and the filter core shaft / skeleton, and then the filter cloth is wound by a winding machine or manually. For example, the Chinese patent application number is: 201510314636.8, and the patent name is the invention patent of "Automatic Winding Machine for Filter Paper". The glue dispensing and winding of the filter element are completed by a fully automatic winding machine. Usually, after the winding is completed and the filter cloth is cut, glue is applied to the sealing part of the cut filter cloth to fix it. At the same time, in order to increase the bonding degree between different filter cloths, glue is also applied between two adjacent layers of filter cloth. Glue: This composite filter cloth bonding method has a simple process and low cost. However, glue usually uses solvent-based glue, which has certain toxicity, is not environmentally friendly, and is not suitable for filtering environments with high filtering requirements. At the same time, glue needs to be coated on the filter cloth or the filter element core shaft / skeleton, which will form a certain blocking surface, thereby reducing the permeability of the filter element, easily causing blockage, and affecting the filtering effect of the filter element. In addition, the bonding degree between the filter cloth and the filter element core shaft / skeleton and the filter cloth is mainly achieved through local glue dispensing and the tightness of winding, and the overall compressive performance of the filter element is limited.

[0005] (ii) Different meltblown filter cloths are heat-pressed and bonded by a heating roller with a certain temperature. Since the polypropylene material used in the meltblown cloth has a low melting point, the different filter cloths are heat-bonded during the heating process and further bonded by roller rolling. For example, the Chinese patent application number is: 201310739921.5, and the patent name is the invention patent of "Wound-type deep filter element and winding device of filter element". Different filter cloths are heated and pressed together by an electric heating roller, without the need for glue bonding, which is beneficial to environmental protection and increases the bonding degree between the filter cloths. In addition, this high-bonding filter element has high strength and strong pressure resistance, and can adapt to large-flow filtration; however, this bonding method requires pre-melting filter materials of different particle sizes or materials into filter cloths and then bonding them, which is a complicated process. At the same time, the filter cloth will be squeezed with high strength during the pressing process, which further increases the density of the filter cloth. While the bonding degree and strength of the filter element are enhanced, the permeability of the filter element is reduced, and the filtration flow of the filter element will also be limited. In addition, this bonding method is only suitable for the bonding between melt-blown filter materials, and the material selection range is relatively small. Summary of the invention

[0006] Therefore, in order to solve the above problems, the present invention provides a composite filter element winding device.

[0007] The present invention is achieved through the following technical solutions:

[0008] The composite filter element winding device comprises:

[0009] The spinning assembly comprises a melt-blown spinning manifold, on which a spinneret die head is arranged at an adjustable angle, and on which a spinneret hole is arranged;

[0010] A winding assembly, comprising a take-up shaft for providing a first filter cloth and an unwinding shaft for winding a filter element, the outer circumference of the take-up shaft being detachably provided with a filter element core shaft, the outer circumference of the unwinding shaft being wound with a rolled first filter cloth, the first filter cloth being connected to the filter element core shaft, the take-up shaft being connected to a motor shaft of a first motor via a first coupling, the unwinding shaft being connected to a motor shaft of a second motor via a second coupling, the first motor and the second motor respectively driving the take-up shaft and the unwinding shaft to rotate, the spinneret holes being directed toward any position on the surface of the first filter cloth arranged between the take-up shaft and the unwinding shaft, and spraying onto the surface of the first filter cloth to form a melt-blown filter layer, and the first filter cloth covered with the melt-blown filter layer being wound onto the take-up shaft;

[0011] The anti-solidification mechanism includes a heating device arranged between the reel and the unreel, and used to prevent the melt-blown filter layer from being cooled and solidified in advance before being reeled onto the reel;

[0012] The tension control component comprises a tension sensor arranged between the winding shaft and the unwinding shaft and a motor speed controller respectively connected to the first motor and the second motor.

[0013] Preferably, a baffle is movably provided between the spinneret die and the winding assembly.

[0014] Preferably, at least two spinning zones are arranged between the reeling shaft and the unwinding shaft, and a group of spinning components is correspondingly arranged on each spinning zone.

[0015] Preferably, the diameter of the spinneret holes of the spinneret die head corresponding to each spinning zone gradually decreases from the direction of the winding axis to the direction of the unwinding axis.

[0016] Preferably, the distance between the take-up shaft and the spinneret is adjustable, and the distance between the unwinding shaft and the spinneret is adjustable.

[0017] Preferably, it also includes a cutting mechanism, on which a central roller for fixing the filter element core shaft is provided, and a pressure roller for pressing the filter cloth at the filter element seal is provided parallel to the radial side of the central roller, and the distance between the pressure roller and the central roller is adjustable.

[0018] Preferably, it further comprises a cutting mechanism, wherein the cutting mechanism is provided with a central roller for fixing the core shaft of the filter element, and a hot air blower for heating the sealing part of the filter element is provided on the radial side of the central roller.

[0019] A method for preparing a composite filter element, using any of the composite filter element winding devices described above, comprises the following steps:

[0020] S1: Sleeve the filter core shaft on the outer periphery of the reel;

[0021] S2: pulling the first filter cloth wound on the unwinding shaft to the surface of the filter core shaft, and fixing the first filter cloth to the filter core shaft;

[0022] S3: The first motor and the second motor drive the winding shaft and the unwinding shaft to rotate respectively;

[0023] S4: The spinneret assembly spins the first filter cloth surface disposed between the filter element core shaft and the unwinding shaft, so that the first filter cloth surface is covered with meltblown filter material fibers, and the meltblown filter material fibers on the surface of the first filter cloth are heated by the anti-curing mechanism, and the filter cloth is wound onto the reel before the meltblown filter material cools and solidifies;

[0024] S5: After winding the filter element for multiple turns according to the required size, the first motor and the second motor stop rotating, and the baffle is moved between the spinneret assembly and the winding assembly, and the wound filter element and the unwinding shaft are transferred to the cutting mechanism;

[0025] S6: Cut the filter cloth and seal the filter cloth at the cut position.

[0026] Preferably, before starting step S3, the rotation speeds of the first motor and the second motor are adjusted, and the positions of the winding shaft and the unwinding shaft are adjusted.

[0027] Preferably, in step S4, at least two spinning zones are sequentially arranged from the filter core axis to the unwinding axis, each spinning zone is correspondingly provided with a group of spinning assemblies, and the spinnerets on each group of spinning assemblies simultaneously spin toward any position in the corresponding spinning zone.

[0028] The beneficial effects of the technical solution of the present invention are mainly reflected in:

[0029] 1. A melt-blown filter layer is formed by melt-blowing directly on the surface of the first filter cloth. The melt-blown filter material's own temperature is combined with an anti-curing mechanism to make the melt-blown filter layer adhere to the inner and outer surfaces of the first filter cloth during the winding process, thereby increasing the bonding degree between the filter layers and saving processing steps. The material range used for the first filter cloth is not limited to the melt-blown filter cloth.

[0030] 2. The tightness of the filter cloth in the winding state is detected and regulated in real time by the tension control component, thereby controlling the bonding degree of the filter cloth. At the same time, the distance between the unwinding shaft and the reeling shaft and the spinneret is adjustable. Therefore, during the spinning process, when the distance between the first filter layer and the spinneret is reduced, the temperature of the melt-blown filter material is higher, the spinning intensity is increased, and the bonding degree with the first filter layer is further increased.

[0031] 3. The first filter cloth is made of a material with supporting properties, combined with the filter core shaft, to ensure the strength of the filter element and enhance the pressure resistance of the filter element, so that it can be used in a large flow filtering environment. At the same time, in the melt-blown filter layer, the thickness of the melt-blown fiber can be adjusted, which can ensure the permeability of the filter element and improve the filtering efficiency and filtering accuracy of the filter element.

[0032] 4. Multiple spinning zones are set between the winding shaft and the unwinding shaft. Different spinning assemblies are used in different spinning zones. The fiber diameter and filter material of the melt-blown filter layer in different spinning zones can be controlled, so as to distinguish different filter layers of the filter element during the winding process. At the same time, the filtering accuracy and filtering function of different filter layers can be flexibly controlled to achieve the gradual change of the filtering accuracy of the melt-blown filter layer and the diversification of the filtering function.

[0033] 5. Adjust the speed of the unwinding shaft and the rewinding shaft as needed to control the thickness of the meltblown filter layer, change the filtration accuracy and strength of the filter element, and increase the flexibility of filter element preparation. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 is a schematic diagram of the working state of the composite filter element winding device in the first direction (the cutting mechanism is not shown);

[0035] Figure 2 is a schematic diagram of the working state of the composite filter element winding device in the second direction (the cutting mechanism is not shown);

[0036] Figure 3 yes Figure 1 Schematic diagram when there are multiple spinning zones;

[0037] Figure 4 yes Figure 2 Schematic diagram when there are multiple spinning zones. DETAILED DESCRIPTION

[0038] In order to make the purpose, advantages and features of the present invention more clearly and in detail, the following preferred embodiments are used for illustration and explanation. The embodiments are only typical examples of the application of the technical solution of the present invention. Any technical solution formed by equivalent replacement or equivalent transformation falls within the scope of protection claimed by the present invention.

[0039] 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 invention.

[0040] 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 the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0041] The present invention discloses that Figure 1 , Figure 2 As shown, the composite filter element winding device comprises:

[0042] The spinneret assembly comprises a melt-blown spinning manifold 1, a spinneret die head is arranged on the melt-blown spinning manifold 1 at an adjustable angle, and a spinneret hole is arranged on the spinneret die head. The spinneret assembly in the present invention can have one or more, and the melt-blown filter material in the melt-blown spinning manifold 1 can use PP, PE, PET, PTFE, etc., and functional materials can also be mixed in the melt-blown filter material to make functional master batches and then put them into the melt-blown spinning manifold 1 for spinning. In one embodiment, a functional filter material channel can be arranged on the spinneret die head. , so that the functional filter material and the meltblown filter material are mixed at the spinneret die head and drawn into fiber filaments 2 by hot air. The structure of the spinneret die head provided with a functional filter material channel is as shown in the Chinese patent application number: 202022261784.7, and the patent name is "Meltblowing Die Head of Meltblowing Equipment". Meltblowing channels and air ducts are opened on the meltblowing die head. The meltblowing die head is also provided with a powder channel. The functional substance is sprayed out from the powder channel through the high-speed hot air in the air duct and merges with the polymer melt extruded from the meltblowing channel.

[0043] The winding assembly includes a winding shaft 3 for providing a first filter cloth 14 and an unwinding shaft 4 for winding a filter element. The first filter cloth 14 is a coarse-pore filter cloth with certain support performance, such as a non-woven fabric or spunbond fabric with relatively coarse single fibers. When the first filter cloth 14 is a non-woven fabric, its single fiber density is 0.5 to 10 deniers. Furthermore, a filter screen with certain support performance and toughness can be laid on the first filter cloth 14, thereby further increasing the strength and compression resistance of the filter element. The outer periphery of the winding shaft 3 is detachably provided with a filter element core shaft 15, and the filter element core shaft 15 is detachably provided with a filter element core shaft 15. The first filter cloth 14 is coaxially sleeved on the outer periphery of the take-up shaft 3 and rotates with the take-up shaft 3. The outer periphery of the unwinding shaft 4 is wound with a rolled first filter cloth 14, and the first filter cloth 14 is connected to the filter core shaft 15. Specifically, one end of the first filter cloth 14 on the unwinding shaft 4 is first pulled to the filter core shaft 15, and then one end of the first filter cloth 14 is fixed to the filter core shaft 15. The filtering method of the first filter cloth 14 and the filter core shaft 15 can be adopted by locally coating non-toxic volatile glue on the filter core shaft 15 or the first filter cloth 14, or nailing, sewing and The first filter cloth 14 is fixed to the filter core shaft 15 by means of a fixing structure or the like on the filter core shaft 15; the winding shaft 3 is connected to the motor shaft of the first motor 6 through a first coupling 5, and the unwinding shaft 4 is connected to the motor shaft of the second motor 8 through a second coupling 7, and the first motor 6 and the second motor 8 respectively drive the winding shaft 3 and the unwinding shaft 4 to rotate, and the spinneret hole faces any position on the surface of the first filter cloth 14 set between the winding shaft 3 and the unwinding shaft 4 and spins the first filter cloth 14 surface to form a melt-blown filter layer, and the first filter cloth covered with the melt-blown filter layer is formed. A filter cloth 14 is wound onto the winding shaft 3. Specifically, the rotation speeds of the first motor 6 and the second motor 8 can be adjusted. The rotation speeds of the first motor 6 and the second motor 8 are close to each other. When the rotation speeds of the first motor 6 and the second motor 8 are faster, the winding speed of the filter element is faster, and the spinning time of the spinneret assembly on the first filter cloth 14 is shorter, so the thickness of the melt-blown filter layer is also thinner. On the contrary, when the rotation speeds of the first motor 6 and the second motor 8 are slower, the winding speed of the filter element is slower, and the spinning time of the spinneret assembly on the first filter cloth 14 is longer, so the thickness of the melt-blown filter layer is also thicker.

[0044] The distance between the unwinding shaft 4 and the rewinding shaft 3 and the spinneret can be adjusted, such as Figure 2As shown, the unwinding shaft 4 can be adjusted to the second unwinding position 13 or the winding shaft 3 can be adjusted to the second winding position 12. When the unwinding shaft 4 is adjusted to the second unwinding position 13 or the winding shaft 3 is adjusted to the second winding position 12, the distance between the unwinding shaft 4 and the winding shaft 3 increases, and the tension of the first filter cloth 14 between the two shafts increases, while the distance between the unwinding shaft 4 located at the second unwinding position 13 or the winding shaft 3 located at the second winding position 12 and the spinneret is reduced, and the distance between the first filter layer and the spinneret is reduced. During the spinning process, when the distance between the first filter layer and the spinneret is reduced, the temperature of the melt-blown filter material is higher, the spinning intensity is increased, and the bonding degree with the first filter layer is further increased. In a preferred embodiment, the distance between the winding shaft 3 and the spinneret and the distance between the unwinding shaft 4 and the spinneret are 300mm-1200mm.

[0045] The anti-solidification mechanism includes a heating device arranged between the winding shaft 3 and the unwinding shaft 4, which is used to prevent the melt-blown filter layer from cooling and solidifying prematurely before being wound onto the winding shaft 3. In order to prevent the melt-blown filter layer from solidifying before winding, so that it can be effectively adhered to the inner and outer surfaces of the first filter cloth 14 respectively during the winding process, and increase the bonding degree between the filter layers of the filter element, it is necessary to ensure that the temperature of the melt-blown filter layer before winding is greater than or equal to the melting point of the melt-blown filter material. The heating device can select a hot air blower, an infrared heating device, etc., and the specific temperature of the heating device can be adjusted according to the melting point of the melt-blown filter material.

[0046] The tension control component includes a tension sensor 9 arranged between the winding shaft 3 and the unwinding shaft 4 and a motor speed controller 10 respectively connected to the first motor 6 and the second motor 8. Specifically, when the rotation speed of the first motor 6 is slightly greater than the rotation speed of the second motor 8, the winding speed is greater than the unwinding speed, and the tension of the first filter cloth 14 between the winding shaft 3 and the unwinding shaft 4 increases. At this time, spraying the first filter cloth 14 can increase the bonding force between the melt-blown filter layer and the first filter cloth 14; when the tension sensor 9 detects that the tension of the first filter cloth 14 between the winding shaft 3 and the unwinding shaft 4 is too large, the rotation speed of the second motor 8 can be appropriately increased to increase the unwinding speed, thereby reducing the tension of the first filter cloth 14 between the winding shaft 3 and the unwinding shaft 4.

[0047] In one embodiment, a baffle 11 is movably provided between the spinneret and the winding assembly. When the filter element has completed the required number of turns of winding, the filter element needs to be transferred and cut. At this time, in order to prevent the spinneret from continuing to spin toward the location of the winding assembly, the baffle 11 is moved between the spinneret and the winding assembly, and after quickly replacing the new filter element core shaft 15 and the unwinding shaft 4 wrapped with the first filter cloth 14, the baffle 11 is evacuated to continue the next winding.

[0048] The composite filter element winding device also includes a cutting mechanism. In one embodiment, a central roller for fixing the filter element core shaft 15 is arranged on the cutting mechanism. A pressing roller for pressing the filter cloth at the filter element sealing portion is arranged in parallel on one radial side of the central roller. The pressing roller is consistent in length with the filter element core shaft 15 and the distance between the pressing roller and the central roller is adjustable. Specifically, when the filter element diameter is large, the distance between the pressing roller and the central roller is increased, and when the filter element diameter is small, the distance between the pressing roller and the central roller is reduced. One of the implementation methods includes: the central roller is detachably arranged on a mounting seat, and the pressing roller is arranged on a mounting seat. The roller is movably arranged on the mounting seat through a slide rail and the axis of the pressure roller is parallel to the axis of the center roller. A cutting knife for cutting the filter element is arranged above the center roller in a liftable manner along its length direction. The setting of the cutting knife is prior art and will not be elaborated here. The cutting knife cuts at the position where the filter element is coated with the meltblown filter layer. After the cutting is completed, the pressure roller rolls at the cut seal of the filter element and applies pressure to the periphery of the filter element. Furthermore, the pressure roller is an electric heating roller. While the pressure roller applies pressure to the seal of the filter element, it heats the seal of the filter element, so that the meltblown filter layer at the seal of the filter element is heated and adheres to the first filter cloth 14 to complete the seal.

[0049] The filter element of the embodiment of the present invention is characterized in that the filter element of the present invention is provided with a plurality of filter elements, and the filter element of the present invention is provided with a plurality of filter elements, and the filter element of the present invention is provided with a plurality of filter elements, and the filter element of the present invention is provided with a plurality of filter elements, and the filter element of the present invention is provided with a plurality of filter elements, and the filter element of the present invention is provided with a plurality of filter elements, and the filter element of the present invention is provided with a plurality of filter elements, and the plurality of filter elements ...

[0050] In one embodiment, the cutting device may further include cutting wheels disposed on the top of both ends of the filter element, and the cutting wheels cut off redundant portions of both ends of the filter element.

[0051] In a preferred embodiment, at least two spinning zones 16 are arranged between the winding shaft 3 and the unwinding shaft 4. Figure 3 , Figure 4As shown, a plurality of spinning zones 16 are arranged in a row up and down along the position between the winding shaft 3 and the unwinding shaft 4, and a group of spinning assemblies are correspondingly arranged on each spinning zone 16. The aperture size of the spinneret holes of the spinneret die head corresponding to each spinning zone 16 gradually decreases from the direction of the winding shaft 3 to the direction of the unwinding shaft 4. The smaller the aperture size of the spinneret hole, the finer the diameter of the fiber filaments 2 of the melt-blown filter material sprayed out, and the higher the filtering accuracy of the melt-blown filter layer. The spinning zone 16 arranged near the winding shaft 3 is located in the inner layer of the filter element, close to the filter element core shaft 15, and the spinning zone 16 arranged near the unwinding shaft 4 is located in the outer layer of the filter element after winding is completed. The aperture size of the spinneret holes of the spinneret die head corresponding to each spinning zone 16 is gradually reduced from the direction of the winding shaft 3 to the direction of the unwinding shaft 4. At this time, the filtering accuracy of the filter element is set to increase from the inside to the outside.

[0052] On the contrary, in other embodiments, if the filtering accuracy of the filter element needs to be set to decrease from the inside to the outside, the aperture of the spinneret holes of the spinneret die head corresponding to each spinning zone 16 needs to be gradually enlarged along the direction of the winding shaft 3 toward the direction of the unwinding shaft 4.

[0053] The melt-blown filter layers with the same filtering accuracy are wound in the same filter layer. Furthermore, as the number of winding turns increases, the length of the spinning zone 16 can also be appropriately increased.

[0054] The type of meltblown filter material in the spinneret assembly corresponding to different spinneret areas 16 can also be adjusted. At the same time, according to the filtering requirements of different filter elements, some functional powders can be added to the functional filter material channels of the spinneret die heads corresponding to some spinneret areas 16 to form a functional meltblown filter layer with specific filtering functions.

[0055] The preparation method of the composite filter element, using the composite filter element winding device described above, comprises the following steps:

[0056] S1: Sleeve the filter core shaft 15 on the outer periphery of the winding shaft 3;

[0057] S2: Pull the first filter cloth 14 wound on the unwinding shaft 4 to the surface of the filter core shaft 15, and fix the first filter cloth 14 to the filter core shaft 15;

[0058] S3: The spinneret assembly spins the first filter cloth 14 disposed between the filter core shaft 15 and the unwinding shaft 4, so that the surface of the first filter cloth 14 is covered with melt-blown filter material fibers;

[0059] S4: The first motor 6 and the second motor 8 drive the winding shaft 3 and the unwinding shaft 4 to rotate respectively, and at the same time, the melt-blown filter material fibers on the surface of the first filter cloth 14 are heated by the anti-curing mechanism, and the filter cloth is wound onto the winding shaft 3 before the melt-blown filter material is cooled and cured;

[0060] S5: After winding the filter element for multiple turns according to the required size, the first motor 6 and the second motor 8 stop rotating, and the baffle 11 is moved between the spinning assembly and the winding assembly, and the wound filter element and the unwinding shaft 4 are transferred to the cutting mechanism;

[0061] S6: Cut the filter cloth and seal the filter cloth at the cut position.

[0062] In step S4, at least two spinning zones 16 are sequentially arranged from the filter core shaft 15 to the unwinding shaft 4, and each spinning zone 16 is correspondingly provided with a group of spinning assemblies, and the spinning holes on each group of spinning assemblies simultaneously spin toward any position in the corresponding spinning zone 16.

[0063] Specifically, in order to flexibly set the position and range of the meltblown filter layer, the spinning angle of the spinneret on the spinneret assembly can be adjusted to adjust the spinning direction. The spinning time of the spinneret and the winding time of the first filter cloth 14 on the winding shaft 3 can be adjusted. For example, after winding the first filter cloth 14 on the filter element core shaft 15 one or more times in advance, the spinneret assembly starts to spin. The filter element obtained by this method is made by winding only the first filter cloth 14 inside, and the composite filter layer composed of the meltblown filter layer and the first filter cloth 14 on the outside is wound one or more times.

[0064] In one embodiment, the method for preparing the composite filter element further includes, before starting step S3 , adjusting the rotation speeds of the first motor 6 and the second motor 8 , and adjusting the positions of the winding shaft 3 and the unwinding shaft 4 .

[0065] There are many implementation methods of the present invention, and all technical solutions formed by equivalent transformation or equivalent transformation fall within the protection scope of the present invention.

Claims

1. Composite filter element winding device, characterized in that: include: The spinning assembly comprises a melt-blown spinning manifold, on which a spinneret die head is arranged at an adjustable angle, and on which a spinneret hole is arranged; The winding assembly comprises an unwinding shaft for providing a first filter cloth and a reeling shaft for winding a filter element, the outer circumference of the rewinding shaft is detachably provided with a filter element core shaft, the outer circumference of the unwinding shaft is wound with a rolled first filter cloth, the first filter cloth is connected to the filter element core shaft, the rewinding shaft is connected to a motor shaft of a first motor through a first coupling, the reeling shaft is connected to a motor shaft of a second motor through a second coupling, the first motor and the second motor respectively drive the rewinding shaft and the reeling shaft to rotate, the spinneret hole faces any position on the surface of the first filter cloth arranged between the rewinding shaft and the reeling shaft, and spins silk onto the surface of the first filter cloth to form a melt-blown filter layer, and the first filter cloth covered with the melt-blown filter layer is wound onto the rewinding shaft, and a baffle is movably provided between the spinneret die head and the winding assembly; The anti-solidification mechanism includes a heating device arranged between the reel and the unreel, and used to prevent the melt-blown filter layer from being cooled and solidified in advance before being reeled onto the reel; A tension control assembly, comprising a tension sensor disposed between the winding shaft and the unwinding shaft and a motor speed controller respectively connected to the first motor and the second motor; The cutting mechanism is used for cutting the filter cloth and sealing the filter cloth at the cut position.

2. The composite filter element winding device according to claim 1, characterized in that: At least two spinning areas are arranged between the winding shaft and the unwinding shaft, and a group of spinning components is correspondingly arranged on each spinning area.

3. The composite filter element winding device according to claim 2, characterized in that: The diameter of the spinneret holes of the spinneret die head corresponding to each spinning zone gradually decreases from the direction of the winding axis to the direction of the unwinding axis.

4. The composite filter element winding device according to claim 1, characterized in that: The distance between the reel and the spinneret is adjustable, and the distance between the unreel and the spinneret is adjustable.

5. The composite filter element winding device according to claim 1, characterized in that: The cutting mechanism is provided with a central roller for fixing the filter element core shaft, and a pressure roller for pressing the filter cloth at the filter element seal is provided in parallel on one radial side of the central roller, and the distance between the pressure roller and the central roller is adjustable.

6. The composite filter element winding device according to claim 1, characterized in that: The cutting mechanism is provided with a central roller for fixing the core shaft of the filter element, and a hot air blower for heating the sealing part of the filter element is provided on one radial side of the central roller.

7. A method for preparing a composite filter element, characterized in that: Using the composite filter element winding device as described in any one of claims 1 to 6 comprises the following steps: S1: Sleeve the filter core shaft on the outer periphery of the reel; S2: pulling the first filter cloth wound on the unwinding shaft to the surface of the filter core shaft, and fixing the first filter cloth to the filter core shaft; S3: The first motor and the second motor drive the winding shaft and the unwinding shaft to rotate respectively; S4: The spinneret assembly spins the first filter cloth surface disposed between the filter element core shaft and the unwinding shaft, so that the first filter cloth surface is covered with meltblown filter material fibers, and the meltblown filter material fibers on the surface of the first filter cloth are heated by the anti-curing mechanism, and the filter cloth is wound onto the reel before the meltblown filter material cools and solidifies; S5: After winding the filter element for multiple turns according to the required size, the first motor and the second motor stop rotating, and the baffle is moved between the spinneret assembly and the winding assembly, and the wound filter element and the unwinding shaft are transferred to the cutting mechanism; S6: Cut the filter cloth and seal the filter cloth at the cut position.

8. The method for preparing the composite filter element according to claim 7, characterized in that: Before step S3 starts, the rotation speeds of the first motor and the second motor are adjusted, and the positions of the winding shaft and the unwinding shaft are adjusted.

9. The method for preparing a composite filter element according to claim 7, characterized in that: In step S4, at least two spinning zones are sequentially arranged from the filter core axis to the unwinding axis, each spinning zone is correspondingly provided with a group of spinning assemblies, and the spinnerets on each group of spinning assemblies simultaneously spin toward any position in the corresponding spinning zone.

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