Pretreatment device for fiber dispersion

Abstract

The present application relates to a kind of pre-treatment devices for fiber dispersion, including opening mechanism, it includes two oppositely arranged and with extension length opening plate;Form the material passage between two opening plates, two opening plates can be driven respectively in the direction of own extension length reciprocating linear motion, and keep the direction of motion opposite relative to each other during movement, so that the fiber material from the material passage can be kneaded to form preliminary opening.It can be formed by means of the two opening plates of opposite direction of motion in opening mechanism, the fiber bundle of cluster shape entering the material passage between two plate bodies is pulled and kneaded, so that the fiber bundle is in advance in more loose state, in turn, it can increase the amount of feed and reduce dispersion time in subsequent fine dispersion process, finally, it can fully guarantee the effect of fiber final dispersion.

Description

Technical Field

[0001] This invention relates to the field of fiber-modified asphalt technology, and particularly to a fiber dispersion pretreatment device, which is used to perform dispersion pretreatment during the dispersion of bundled fiber bundles before mixing fibers with asphalt. Background Technology

[0002] In recent years, the research and application of fiber-reinforced asphalt concrete has attracted increasing attention. It mainly improves the characteristics of asphalt in traffic roads by incorporating fibers into it to physically modify the asphalt.

[0003] However, the problem of fiber dispersion is a key issue that restricts the application of fibers in asphalt or asphalt mixtures. This is because fibers (such as PVA fibers) are manufactured in bundles, and each fiber bundle is usually composed of tens of millions of monofilaments. Therefore, how to disperse bundled fibers into monofilaments and distribute them evenly in asphalt mixtures is an important factor in whether fibers can play a reinforcing role in asphalt.

[0004] Existing methods for dispersing fibers mainly include mechanical stirring dispersion, charge adsorption dispersion, and high-pressure air blowing dispersion. However, regardless of the method, the entire cluster of fiber bundles is fed into the dispersion device. Such dispersion devices either increase the duration of each dispersion operation or reduce the amount of fiber material to be dispersed each time, which increases the workload and cannot guarantee a relatively good dispersion effect each time. Summary of the Invention

[0005] In view of this, the present invention provides a fiber dispersion pretreatment device that can pretreatment the material to be dispersed so that the bundled fibers are in a relatively loose state, thereby ensuring the final dispersion effect of the fibers.

[0006] The present invention discloses a fiber dispersion pretreatment device, including an opening mechanism, which includes two opening plates arranged opposite to each other and having an extended length; a material passage is formed between the two opening plates, and the two opening plates can be driven to reciprocate linearly in the direction of their own extended length, and in the process of movement they keep opposite directions of movement relative to each other, so that the fiber material passing through the material passage can be kneaded to form preliminary opening.

[0007] Furthermore, the pretreatment device also includes an air-blowing mechanism, which comprises a carrier, a shaft cavity, a feed shaft, and an air-blowing channel. The shaft cavity is formed on the carrier and located below the feed channel. The feed shaft is located in the shaft cavity and has a solid portion and a material cavity portion arranged opposite each other in its radial direction. The air-blowing channel is disposed on the carrier and its end outlet faces the feed shaft. The feed shaft is constructed to have a receiving state and an air-blowing state, and can be driven around its own axis to switch between the receiving state and the air-blowing state. When in the receiving state, the material cavity portion is in contact with the feed channel to receive the fiber material falling from the feed channel. When in the air-blowing state, the solid sealing portion blocks the feed channel, and the material cavity portion communicates with the air-blowing channel, so that high-pressure gas can disperse the fiber material in the material cavity portion by air-blowing.

[0008] Furthermore, the material chamber includes multiple receiving chambers distributed along the material feed axis.

[0009] Furthermore, it also includes a feeding channel and a closing plate. The feeding channel is opened on the carrier and located below the shaft cavity. The closing plate is set at the connection between the feeding channel and the shaft cavity, so as to form a connection and disconnection between the feeding channel and the shaft cavity in a rotatable manner.

[0010] Furthermore, the feeding channel is constructed as a Venturi structure, and an air inlet for high-pressure air intake is provided in the feeding channel to enable negative pressure suction to be formed in the feeding channel.

[0011] Furthermore, the opening mechanism also includes a set of drive components for each opening plate. The drive components include a directional housing, a drive shaft and a push rod disposed inside the directional housing. The drive shaft is configured to rotate around its own axis and has a curved groove. The side wall of the directional housing has a directional groove in its own length direction. One end of the push rod passes through the directional groove and cooperates with the curved groove to form a cylindrical cam mechanism, and the other end is connected to the opening plate.

[0012] Furthermore, the loosening plate is provided with loosening teeth, and the loosening teeth on the two loosening plates are staggered with each other.

[0013] Furthermore, the pretreatment device also includes a feeding mechanism, which includes a feeding chamber and feeding rollers disposed in the feeding chamber. The feeding rollers are two oppositely arranged and are configured to rotate in opposite directions, so that the fiber material is fed into the material passage by the feeding rollers.

[0014] Beneficial effects: In the fiber dispersion pretreatment device of the present invention, by means of two opening plates moving in opposite directions in the opening mechanism, the clustered fiber bundles entering the material passage between the two plates can be stretched and kneaded, so that the bundled fibers are in a relatively loose state beforehand, thereby increasing the feed rate and reducing the dispersion time in the subsequent fine dispersion process, and ultimately ensuring the final dispersion effect of the fibers.

[0015] The fiber dispersion pretreatment apparatus of the present invention is disclosed in detail below with reference to the embodiments shown in the accompanying drawings and the reference numerals. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the pretreatment device of the present invention, wherein the feed shaft is in the receiving state.

[0017] Figure 2 This is a schematic diagram of the overall structure of the pretreatment device of the present invention, wherein the feed shaft is in an air-blowing state.

[0018] Figure 3 A schematic diagram of the drive component is shown.

[0019] Figure 4 A schematic diagram showing the connection between the drive assembly and the opening plate is provided.

[0020] Figure 5 A schematic diagram of the overall structure of the opening mechanism is shown, in which the opening plates are in a relative and non-misaligned state.

[0021] Figure 6 A schematic diagram of the overall structure of the loosening mechanism is shown, in which the loosening plate is in a misaligned state.

[0022] Figure 7 A schematic diagram of the feed shaft is shown. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0024] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0025] This invention discloses a fiber dispersion pretreatment device that can be used alone or in conjunction with existing mechanical stirring dispersion devices, charge adsorption dispersion devices, or high-pressure air blowing dispersion devices. When used in conjunction with an existing dispersion device, it is placed before the existing dispersion device to pretreat fiber bundles that exist in clusters.

[0026] Figure 1 This is a schematic diagram of the overall structure of the pretreatment device of the present invention, wherein the feed shaft is in the receiving state. Figure 2 This is a schematic diagram of the overall structure of the pretreatment device of the present invention, wherein the material conveying shaft is in an air-blowing state. Combined with... Figure 1 and Figure 2 As shown, the fiber dispersion pretreatment of the present invention includes a frame 1, an opening mechanism, an air-blowing mechanism, and a feeding channel 4, wherein the air-blowing mechanism is located below the opening mechanism, and the feeding channel 4 is located below the air-blowing mechanism. Those skilled in the art will understand that the pretreatment device of the present invention may further include a controller 2 and a power unit 3, wherein the controller 2 includes a control chip to control the opening mechanism and the air-blowing mechanism, as well as other components therein, to operate via electrical control or signal transmission, and the power unit 3 may be an electric motor and transmission components (e.g., sprocket drive or belt drive) to drive the shaft therein to rotate.

[0027] Figure 3 A schematic diagram of the drive component is shown. Figure 4 A schematic diagram showing the connection between the drive assembly and the opening plate is provided. Figure 5 A schematic diagram of the overall structure of the opening mechanism is shown, in which the opening plates are in a relative and non-misaligned state. Figure 6 A schematic diagram of the overall structure of the opening mechanism is shown, in which the opening plate is in a misaligned state. Combined with... Figures 1-6 As shown, the opening mechanism includes two opening plates 5 arranged opposite to each other and having an extended length; a material passage is formed between the two opening plates 5, and the two opening plates 5 can be driven to reciprocate linearly in the direction of their own extended length, and in the process of movement they keep opposite directions of movement relative to each other, so that the fiber material passing through the material passage can be kneaded to form preliminary opening.

[0028] In this system, two opening plates 5 are arranged parallel to each other. The fiber material A enters the feeding channel from top to bottom. During this process, the two opening plates 5 are driven by their respective drive components, resulting in reciprocating linear motion along their own length. It is particularly important to note that the two opening plates 5 are configured to move in opposite directions during their relative motion. This ensures that the fiber material A entering the feeding channel is subjected to forces in two opposite directions, causing it to be stretched (or "kneaded") within the channel, thus initially loosening the clustered fiber bundles. Of course, during this process, most fiber bundles may not yet be dispersed into monofilaments, but they may have already been stretched to a certain degree of looseness relative to their initial state due to the movement of the opening plates 5, which is beneficial for the subsequent dispersion.

[0029] In the embodiment shown in the figure, the opening plate 5 is provided with opening teeth 6, and the opening teeth 6 on the two opening plates 5 are staggered. With the help of the opening teeth 6, the fiber material A can be better stretched during the opposite movement of the two opening plates 5, thereby further improving the initial opening effect.

[0030] In the embodiment shown in the figure, the opening plate 5 is driven by a drive assembly to reciprocate in the direction of its own extension length. The drive assembly as a whole drives the opening plate 5 by means of the principle of a cylindrical cam mechanism.

[0031] Specifically, the opening mechanism includes a set of drive components for each opening plate 5. The drive components include a directional housing 7, a drive shaft 8 and a push rod 9 disposed in the directional housing 7. The drive shaft 8 is configured to rotate around its own axis and has a curved groove 10. The side wall of the directional housing 7 has a directional groove 11 in its own length direction. One end of the push rod 9 passes through the directional groove 11 and cooperates with the curved groove 10 to form a cylindrical cam mechanism, and the other end is connected to the opening plate 5.

[0032] In this configuration, the directional housing 7 is stationary, while the drive shaft 8 is fitted inside the positioning housing and can be driven to rotate around its own axis by external force (such as a motor). Since the end of the push rod 9 abuts against the inside of the curved groove 10, when the drive shaft 8 is driven to rotate, the curved groove 10 can press the end of the push rod 9 to move. At this time, due to the limiting effect of the directional groove 11 of the directional housing 7, the push rod 9 can only move along the extension direction of the directional groove 11, thereby achieving the purpose of driving the loosening plate 5 to move.

[0033] Of particular note is that the curved groove 10 on the drive shaft 8 is configured to work in conjunction with the directional groove 11 to drive the opening plate 5 to perform linear reciprocating motion while the rotation direction of the drive shaft 8 remains unchanged. In a preferred embodiment, the curved groove 10 can be configured as a wavy groove in the circumferential direction of the drive shaft 8.

[0034] Combination Figure 1 and Figure 2 As shown, the pretreatment device also includes an air blowing mechanism, which includes a carrier 12, a shaft cavity, a material conveying shaft 13, and an air blowing channel 14. The shaft cavity is opened on the carrier 12 and located below the material conveying channel, and the material conveying shaft 13 is located in the shaft cavity. Figure 7 A schematic diagram of the feed shaft 13 is shown, combined with Figure 7 As shown, the feed shaft 13 has a solid portion 13a and a material cavity portion 13b arranged opposite to each other in its radial direction; the air blowing channel 14 is provided on the carrier 12 and the end air outlet faces the feed shaft 13.

[0035] like Figure 1 and Figure 2 As shown, the feed shaft 13 is configured to have a receiving state and an air blowing state, and can be driven to rotate around its own axis to switch between the receiving state and the air blowing state; when in the receiving state, the feed chamber 13b is connected to the feed channel to receive the fiber material A falling from the feed channel; when in the air blowing state, the solid sealing part blocks the feed channel, and the feed chamber 13b is connected to the air blowing channel 14 so that the high pressure gas can blow and disperse the fiber material A in the feed chamber 13b.

[0036] The specific working process of the feed shaft 13 is as follows: In the initial state, the feed shaft 13 is in the receiving state, that is, the material cavity 13b is located below the outlet of the feed channel, so that the fiber bundle that has been initially loosened through the feed channel falls into the material cavity 13b; then the feed shaft 13 can be driven to rotate to enter the air blowing state from the receiving state; in the air blowing state, the receiving cavity in the material cavity 13b is connected to the air blowing channel 14. At this time, the high pressure gas entering from the air blowing channel 14 can be used to forcefully blow the fiber material A in the receiving cavity, so that the fiber material A is further blown apart.

[0037] With the help of the feed shaft 13 in this invention, the fiber bundle passing through the feed channel can easily fall into the air blowing mechanism. Since the feed shaft 13 can be driven to rotate, the shaft cavity of the air blowing mechanism / the receiving cavity of the feed shaft 13 can form a separate independent cavity relative to the feed channel, that is, it is isolated from the feed channel. This ensures that the blowing work is completed in a relatively independent space, and the high-pressure air blowing gas will not enter the feed channel.

[0038] Combination Figure 7 As shown, the material cavity 13b includes a plurality of receiving cavities 13c distributed axially along the material feed shaft 13. Specifically, in a preferred embodiment, the solid portion 13a and the material cavity 13b of the material feed shaft 13 are distributed in a 50 / 50 manner, that is, in the radial direction of the material feed shaft 13, one half is the solid portion 13a and the other half is the material cavity 13b. Multiple portions of the material cavity 13b are radially recessed inward, thereby forming the plurality of receiving cavities 13c. A partition 13d is provided between the plurality of receiving cavities 13c.

[0039] In a preferred embodiment, the radial dimension of the feed shaft 13 is adapted to the inner diameter of the shaft cavity. This allows the partition 13d to fit tightly against the inner wall of the shaft cavity when the feed shaft 13 is in the air-blowing state, so that the multiple receiving cavities 13c also form independent cavity spaces. Similarly, air-blowing channels 14 can be provided for each of the multiple receiving cavities 13c, so that the multiple receiving cavities 13c can work independently, thereby allowing the fiber material A within them to be blown apart individually. By means of this separate operation, the blowing effect of high-pressure gas on the fiber material A can be fully guaranteed.

[0040] Combination Figure 1 and Figure 2 As shown, the pretreatment device also includes a feeding channel 4 and a closing plate 15. The feeding channel 4 is opened on the carrier 12 and located below the shaft cavity. The closing plate 15 is set at the connection between the feeding channel 4 and the shaft cavity, so as to form a connection and disconnection between the feeding channel 4 and the shaft cavity in a rotatable manner.

[0041] The feeding channel 4 is constructed with a venturi structure, and an air inlet 18 for high-pressure air intake is provided in the feeding channel 4 so that negative pressure suction can be formed in the feeding channel 4.

[0042] In addition, combined Figure 1 and Figure 2 As shown, the pretreatment device also includes a feeding mechanism, which includes a feeding chamber 16 and feeding rollers 17 disposed in the feeding chamber 16. The feeding rollers 17 are two oppositely arranged and are configured to rotate in opposite directions so that the fiber material A is fed into the material passage by the feeding rollers 17.

[0043] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0044] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0045] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0046] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A pretreatment apparatus for fiber dispersion, characterized in that, The invention includes an opening mechanism comprising two opening plates arranged opposite each other and having an extended length; a material passage is formed between the two opening plates, and the two opening plates can be driven to reciprocate linearly in the direction of their own extended length, and in the process of movement they maintain opposite directions of movement relative to each other, so that the fiber material passing through the material passage can be kneaded to form a preliminary opening. The pretreatment device further includes an air-blowing mechanism, which comprises: Carrier; A shaft cavity is formed on the carrier and located below the material passage; A feed shaft, which is located in the shaft cavity and has a solid portion and a feed cavity portion that are arranged opposite each other in its own radial direction; An air blowing channel is installed on the carrier and its end air outlet faces the material conveying shaft; The feed shaft is configured to have a receiving state and an air blowing state, and can be driven to rotate around its own axis to switch between the receiving state and the air blowing state; when in the receiving state, the feed chamber is connected to the feed channel to receive the fiber material falling from the feed channel; when in the air blowing state, the solid part blocks the feed channel, and the feed chamber is connected to the air blowing channel so that high-pressure gas can disperse the fiber material in the feed chamber.

2. The fiber dispersion pretreatment apparatus according to claim 1, characterized in that, The material receiving section includes multiple receiving chambers distributed along the axial direction of the material passing shaft.

3. The fiber dispersion pretreatment apparatus according to claim 2, characterized in that, Also includes: The material feeding channel is located on the support body and below the shaft cavity; A gate and a gate are provided at the connection between the feeding channel and the shaft cavity, which can rotatably connect and disconnect the feeding channel and the shaft cavity.

4. The fiber dispersion pretreatment apparatus according to claim 3, characterized in that, The feeding channel is constructed with a venturi structure, and an air inlet for high-pressure air intake is provided in the feeding channel to enable negative pressure suction in the feeding channel.

5. The fiber dispersion pretreatment apparatus according to any one of claims 1-4, characterized in that, The opening mechanism also includes a set of drive components for each opening plate. The drive components include a directional housing, a drive shaft and a push rod disposed inside the directional housing. The drive shaft is configured to rotate around its own axis and has a curved groove. The side wall of the directional housing has a directional groove along its own length. One end of the push rod passes through the directional groove and cooperates with the curved groove to form a cylindrical cam mechanism, and the other end is connected to the opening plate.

6. The fiber dispersion pretreatment apparatus according to claim 5, characterized in that, The loosening plate is provided with loosening teeth, and the loosening teeth on the two loosening plates are staggered.

7. The fiber dispersion pretreatment apparatus according to claim 5, characterized in that, The pretreatment device also includes a feeding mechanism, which includes a feeding chamber and feeding rollers disposed in the feeding chamber. The feeding rollers are two oppositely arranged and are configured to rotate in opposite directions so that the fiber material is fed into the material passage by the feeding rollers.

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