Basic asphalt filtering device in modified asphalt production

Abstract

The utility model provides a basic asphalt filtering device in modified asphalt production, which comprises a filtering cylinder, a first filtering area, a second filtering area and a collecting area are arranged in the filtering cylinder, and the first filtering area, the second filtering area and the collecting area are communicated with one another; the screw rod extends from one end of the filter cartridge to the other end of the filter cartridge, a screw blade is arranged on the outer side of the screw rod, the screw rod pushes materials to move from the first filter area to the second filter area, and the collecting bin is arranged below the filter cartridge. Filter screens communicated with the collecting bin are arranged on the first filter area and the second filter area, a feeding hole is formed in the first filter area, asphalt reaches the collecting bin from the filter screens on the first filter area and the second filter area, and impurities reach the collecting area under the rotation action of the screw rod in the filtering process. The amount of asphalt reaching the collecting area along with the screw rod is reduced through the second filtering area of the variable-diameter structure, and the situation that a large amount of asphalt is wrapped by the screw rod to reach the collecting area is avoided.

Description

Technical Field

[0001] This utility model belongs to the field of asphalt production technology, and in particular relates to a basic asphalt filtration device in modified asphalt production. Background Technology

[0002] Modified asphalt is an asphalt binder made by adding external admixtures (modifiers) such as rubber, resin, polymer, finely ground rubber powder, or other fillers, or by taking measures such as slight oxidation processing of asphalt, to improve the properties of asphalt or asphalt mixtures.

[0003] In modification technology, modifiers are evenly distributed in asphalt to form modified asphalt. In the production of modified asphalt using this method, the asphalt used as the base material needs to be filtered to reduce the impurity content inside the base asphalt. Existing technology equipment uses asphalt filtration devices, which use spiral blades to continuously scrape the filter screen to reduce the adhesion of impurities to the filter screen in order to avoid impurities clogging the filter screen. However, this method will cause asphalt that cannot be filtered in time to be pushed to the impurity collection area, resulting in material waste. Utility Model Content

[0004] This utility model provides a basic asphalt filtration device for modified asphalt production, aiming to solve the problem that the current spiral blades constantly scrape the filter screen to reduce the adhesion of impurities on the filter screen, which easily causes asphalt that cannot be filtered in time to be pushed to the impurity collection area, resulting in material waste.

[0005] This utility model is implemented as follows: a basic asphalt filtration device for modified asphalt production, comprising:

[0006] A filter cartridge, wherein the filter cartridge is provided with a first filtration zone, a second filtration zone and a collection zone, and the first filtration zone, the second filtration zone and the collection zone are interconnected;

[0007] A spiral rod extends from one end of the filter cylinder to the other end of the filter cylinder. Spiral blades are provided on the outer side of the spiral rod. The spiral rod pushes the material from the first filtration zone to the second filtration zone. The diameter of the second filtration zone gradually decreases along the material movement direction. The portion of the spiral blades located in the second filtration zone has a variable diameter structure.

[0008] The collection chamber is located below the filter cylinder. The first and second filtration zones are equipped with filter screens that communicate with the collection chamber. The first filtration zone is equipped with a feed inlet. Asphalt reaches the collection chamber from the filter screens in the first and second filtration zones. During the filtration process, impurities reach the collection zone under the action of the rotating screw.

[0009] Preferably, the collection chamber is provided with a first support end block, a first support base and a second support base, and the collection area on the filter cylinder is placed on the second support base. The first support end block and the first support base support the first filtration area and the second filtration area on the filter cylinder, respectively.

[0010] Preferably, the filter cartridge is embedded in the collection chamber, the side wall of the first filter area embedded in the collection chamber is provided with a first filter surface, and the side wall of the second filter area embedded in the collection chamber is provided with a second filter surface.

[0011] Preferably, the screw rod is provided with three helical blades, the helical blades in the first filtration zone and the helical blades in the collection zone are helical blades of the same diameter, and the helical blades in the second filtration zone are helical blades of varying diameter.

[0012] Preferably, the collection chamber is provided with an asphalt outlet, from which the filtered and purified asphalt leaves the collection chamber.

[0013] Preferably, the inner diameter of the collection area gradually increases along the material pushing direction of the screw.

[0014] Preferably, the end face of the collection area away from the second filtration area is provided with an outlet to accommodate the outflow of impurities.

[0015] Compared with the prior art, the embodiments of this application have the following main advantages:

[0016] The basic asphalt filtration device for modified asphalt production provided by this utility model utilizes the converging and squeezing effect generated when the material passes through the second filtration zone of the variable diameter structure to accelerate the passage of asphalt through the second filtration surface. Here, the spiral blades of the variable diameter structure generate axial thrust to propel the material forward. The matching second filtration surface adopts an inclined structure. Under the action of axial thrust, the asphalt will more easily pass through the second filtration surface and reach the inside of the collection bin, thereby reducing the amount of asphalt that reaches the collection zone with the spiral rod and avoiding a large amount of asphalt being carried to the collection zone by the spiral rod. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a basic asphalt filtration device in modified asphalt production provided by this utility model.

[0018] Figure 2 This is an exploded structural diagram of a basic asphalt filtration device for modified asphalt production provided by this utility model.

[0019] Figure 3 This is a schematic diagram of the internal structure of a basic asphalt filtration device for modified asphalt production provided by this utility model.

[0020] Figure 4This is a schematic diagram of the collection chamber in a basic asphalt filtration device for modified asphalt production provided by this utility model.

[0021] Figure 5 This is a schematic diagram of the first and second filter surfaces of a basic asphalt filtration device for modified asphalt production provided by this utility model.

[0022] Explanation of reference numerals in the attached figures:

[0023] 100. Filter cartridge; 101. First filtration zone; 102. Second filtration zone; 103. Collection zone; 110. Rotating shaft; 120. Spiral blades; 131. First filter surface; 132. Second filter surface; 133. Placement surface; 200. Collection chamber; 210. First support end block; 220. First support base; 230. Second support base. Detailed Implementation

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, not to describe a particular order.

[0025] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0026] This utility model embodiment provides a basic asphalt filtration device for modified asphalt production, such as... Figures 1-5 As shown, the basic asphalt filtration device for modified asphalt production includes:

[0027] The filter cartridge 100 has a first filtration zone 101, a second filtration zone 102 and a collection zone 103 inside, and the first filtration zone 101, the second filtration zone 102 and the collection zone 103 are interconnected.

[0028] A spiral rod 110 extends from one end of the filter cylinder 100 to the other end of the filter cylinder 100. Spiral blades 120 are provided on the outer side of the spiral rod 110. The spiral rod 110 pushes the material from the first filter zone 101 to the second filter zone 102. The diameter of the second filter zone 102 gradually decreases along the material movement direction. The portion of the spiral blades 120 located in the second filter zone 102 has a variable diameter structure.

[0029] Collection chamber 200 is disposed below filter cylinder 100. A portion of the structure of filter cylinder 100 is embedded in collection chamber 200. The side wall of the first filtration zone 101 embedded in collection chamber 200 is provided with a first filtration surface 131, and the side wall of the second filtration zone 102 embedded in collection chamber 200 is provided with a second filtration surface 132.

[0030] The first filtration zone 101 is provided with a feed inlet that communicates with the outside. Asphalt reaches the collection bin 200 from the filter screens on the first filtration zone 101 and the second filtration zone 102. During the filtration process, impurities reach the collection zone 103 under the action of the rotating screw 110.

[0031] In this process, the first filtration zone 101 has a cylindrical structure, which increases the capacity of asphalt. The first filtration zone 101 has a first filter surface 131 facing the end face of the collection chamber 200. Asphalt falls into the collection chamber 200 from the first filter surface 131 in the first filtration zone 101. A large amount of asphalt filtration is completed in the first filtration zone 101.

[0032] As the material is advanced to the second filtration zone 102, which is a frustum structure, the diameter of the second filtration zone 102 gradually narrows along the direction of material advancement. At this point, the total amount of residual asphalt that was not filtered by the first filtration zone 101 will not be too large. Therefore, a shrinking aperture structure can be used to process it. The asphalt is accelerated through the second filter surface 132 by the convergence and compression effect generated when the material passes through the variable diameter structure of the second filtration zone 102, reducing the amount of asphalt that reaches the collection zone 103 with the screw rod 110, and avoiding a large amount of asphalt being carried to the collection zone 103 by the screw rod 110.

[0033] The spiral rod 110 here uses a variable diameter spiral blade 120 to generate axial thrust. The second filter surface 132 adapted to it has an inclined structure. Under the action of axial thrust, asphalt will more easily pass through the second filter surface 132 to reach the inside of the collection chamber 200. Impurities that cannot pass through the first filter surface 131 and the second filter surface 132 will be spirally propelled by the spiral blade 120 to the collection area 103. The end face of the collection area 103 away from the second filter area 102 is provided with an outlet to accommodate the outflow of impurities.

[0034] In a preferred embodiment of this invention, the spiral rod 110 is provided with three spiral blades 120. The spiral blades 120 located in the first filtration zone 101 and the spiral blades 120 located in the collection zone 103 are spiral blades of the same diameter, while the spiral blades 120 located in the second filtration zone 102 are spiral blades of varying diameters.

[0035] In this embodiment, the spiral rod 110 is mounted on the filter cylinder 100 by bearings. The spiral rod 110 is driven by a motor located on the outside of the filter cylinder 100. The spiral blades 120 continuously scrape off the impurities attached to the first filter surface 131 and the second filter surface 132 to prevent impurities from clogging the first filter surface 131 and the second filter surface 132.

[0036] In a preferred embodiment of this invention, the collection chamber 200 is provided with a first support end block 210, a first support seat 220 and a second support seat 230. The collection area 103 on the filter cylinder 100 is partially placed on the second support seat 230. The first support end block 210 and the first support seat 220 respectively support the first filtration area 101 and the second filtration area 102 on the filter cylinder 100.

[0037] In this embodiment, the collection chamber 200 serves as the asphalt collection area after filtration. Here, the collection chamber 200 collects asphalt from the first filtration zone 101 and the second filtration zone 102 respectively. The collection chamber 200 is provided with an asphalt outlet, and the filtered and purified asphalt leaves the collection chamber 200 from the asphalt outlet.

[0038] In a preferred embodiment of this invention, the inner diameter of the collection area 103 gradually increases along the material pushing direction of the screw rod 110;

[0039] In this embodiment, the collection area 103 serves as an impurity collection area. The inclined structure design facilitates the material to converge at one end of the collection area 103, thus preventing the material from flowing back into the collection area 103.

[0040] It should be noted that, for the sake of simplicity, the foregoing embodiments are all described as a series of actions. However, those skilled in the art should understand that the present invention is not limited to the described order of actions, as some steps may be performed in other orders or simultaneously according to the present invention. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions and modules involved are not necessarily essential to the present invention.

[0041] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Although this utility model has been described in detail with reference to the above embodiments, those skilled in the art can still combine, add, delete, or otherwise adjust the features of the various embodiments of this utility model according to the circumstances without conflict or creative effort, thereby obtaining different technical solutions that do not fundamentally depart from the concept of this utility model. These technical solutions are also within the scope of protection of this utility model.

Claims

1. A basic asphalt filtration device for modified asphalt production, characterized in that, include: A filter cartridge (100) is provided inside, comprising a first filtration zone (101), a second filtration zone (102), and a collection zone (103), wherein the first filtration zone (101), the second filtration zone (102), and the collection zone (103) are interconnected. A spiral rod (110) extends from one end of the filter cylinder (100) to the other end of the filter cylinder (100). Spiral blades (120) are provided on the outer side of the spiral rod (110). The spiral rod (110) pushes the material from the first filter zone (101) to the second filter zone (102). The diameter of the second filter zone (102) gradually decreases along the material movement direction. The portion of the spiral blades (120) located in the second filter zone (102) has a variable diameter structure. The collection chamber (200) is located below the filter cylinder (100). The first filter zone (101) and the second filter zone (102) are provided with filter screens that communicate with the collection chamber (200). The first filter zone (101) is provided with a feed inlet. Asphalt reaches the collection chamber (200) from the filter screens on the first filter zone (101) and the second filter zone (102). During the filtration process, impurities reach the collection zone (103) under the rotation of the screw rod (110).

2. The basic asphalt filtration device for modified asphalt production as described in claim 1, characterized in that, The collection chamber (200) is provided with a first support end block (210), a first support seat (220) and a second support seat (230). The collection area (103) on the filter cylinder (100) is partially placed on the second support seat (230). The first support end block (210) and the first support seat (220) support the first filtration area (101) and the second filtration area (102) on the filter cylinder (100) respectively.

3. The basic asphalt filtration device for modified asphalt production as described in claim 2, characterized in that, The filter cartridge (100) is partially embedded in the collection chamber (200). The first filter zone (101) is embedded in the side wall of the collection chamber (200) and has a first filter surface (131). The second filter zone (102) is embedded in the side wall of the collection chamber (200) and has a second filter surface (132).

4. The basic asphalt filtration device for modified asphalt production as described in claim 3, characterized in that, The spiral rod (110) is provided with three spiral blades (120). The spiral blades (120) located in the first filtration zone (101) and the spiral blades (120) located in the collection zone (103) are spiral blades of the same diameter, while the spiral blades (120) located in the second filtration zone (102) are spiral blades of different diameters.

5. A basic asphalt filtration device for modified asphalt production as described in claim 4, characterized in that, The collection chamber (200) is equipped with an asphalt outlet, and the filtered and purified asphalt leaves the collection chamber (200) from the asphalt outlet.

6. The basic asphalt filtration device for modified asphalt production as described in claim 5, characterized in that, The inner diameter of the collection area (103) gradually increases along the material pushing direction of the screw rod (110).

7. A basic asphalt filtration device for modified asphalt production as described in claim 6, characterized in that, The end face of the collection area (103) away from the second filtration area (102) is provided with an outlet to accommodate the outflow of impurities.

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