Vibrating screen and asphalt mixing station

Abstract

The utility model relates to the technical field of construction equipment, and provides a vibrating screen and an asphalt mixing station. The vibrating screen comprises a plurality of screen meshes, the screen meshes are arranged at intervals in the thickness direction of the screen meshes, and each screen mesh comprises a first area and a second area which are oppositely arranged; wherein in the state that aggregate falls towards the screen cloth in the first direction, meshes of the first area of at least one screen cloth are smaller than those of the second area of the at least one screen cloth; the first direction is a direction from the first area to the second area. In the specific implementation process, by taking the first direction from left to right as an example, the first area can be the left half part of the screen, the second area can be the right half part of the screen, and due to the fact that screen meshes of the left half part are smaller than those of the right half part, when aggregate falls down, the aggregate penetrates through the right half part by a large amount. Therefore, the screening efficiency of the screen can be improved, and the technical problem that in the prior art, the utilization rate of the screen is low is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of construction equipment, in particular to a vibrating screen and an asphalt mixing station. Background Art

[0002] Asphalt concrete is one of the important materials used in road construction. It is a mixture of asphalt, mineral powder and aggregate.

[0003] Asphalt mixing plant is a kind of equipment used to produce asphalt concrete. Asphalt mixing plant includes: aggregate silo, aggregate screening device (or vibrating screen), dryer, asphalt tank, asphalt metering device and mixer; aggregate silo is used to store aggregates such as gravel and sand of different grading types; aggregate screening device is located under the aggregate silo, and the aggregate screening device includes multiple layers of screens; dryer heats aggregate to a certain temperature to remove moisture on its surface; asphalt tank is used to store asphalt; asphalt metering device is used to meter and supply asphalt; mixer is used to mix aggregates and asphalt that have been screened and heated and dried to make asphalt concrete. The working principle of the asphalt mixing plant is: first, aggregates such as gravel and sand of different grading types are stored in the aggregate silo; then, the aggregates are screened through the screen under the aggregate silo and classified according to different grading types (gradation refers to the particle distribution and relative proportion of aggregates such as crushed stone and machine-made sand in asphalt concrete); then, the aggregates are sent to the dryer to heat and dry the aggregates for better mixing with asphalt; after the aggregates are heated, they are sent to the mixer, and an appropriate amount of asphalt is supplied to the mixer through the asphalt metering device. Finally, the asphalt concrete is made by mixing in the mixer.

[0004] However, in the process of screening aggregates, the aggregates generally move from one end of the screen to the other end of the screen. Taking the movement of aggregates from left to right as an example, when the aggregates begin to be scattered on the screen from left to right, the left part of the screen is generally in a high-load working state, and the left part of the screen is in a low-load working state, that is, the screen on the left part screens more than the screen on the right part, resulting in a situation where the screen on the left part does not screen through, and the screen on the right part has no material to screen. As a result, the utilization rate of the screen is low, affecting the screening efficiency of the screen. Utility Model Content

[0005] The utility model provides a vibrating screen and an asphalt mixing station, which are used to solve the technical problem of low screen utilization rate in the prior art.

[0006] The utility model provides a vibrating screen, comprising: a plurality of screens, the plurality of screens are arranged at intervals along the thickness direction thereof, the screens comprising a first area and a second area which are arranged oppositely; wherein, when aggregate falls toward the screen along the first direction, the mesh openings of the first area of ​​at least one screen are smaller than the mesh openings of the second area; the first direction is the direction from the first area to the second area.

[0007] According to one embodiment of the present invention, the size of the mesh of at least one screen gradually expands along the first direction.

[0008] According to one embodiment of the utility model, a material reduction net is further included, which is sandwiched between two adjacent screens and is used to reduce the amount of aggregate moving from the first area to the second area.

[0009] According to an embodiment of the present invention, the material reduction net is arranged to be inclined toward the second area from top to bottom.

[0010] According to an embodiment of the utility model, a screen box is further included, a plurality of screens are located in the screen box, and edges of the plurality of screens are connected to the side wall of the screen box.

[0011] According to an embodiment of the utility model, it also includes an aggregate dispersing component, which is located above the screen and connected to the screen box. The aggregate dispersing component is used to disperse the aggregate on the screen along a second direction; the second direction is set at an angle to the first direction.

[0012] According to one embodiment of the utility model, the aggregate dispersion component includes a first connecting member, a second connecting member and a plurality of dispersion ribs; the first connecting member and the second connecting member are arranged relatively to each other along the second direction, and the first connecting member is connected to the second connecting member through the plurality of dispersion ribs; the dispersion ribs are extended along the second direction, and the plurality of dispersion ribs are arranged to form a cage structure through which aggregate can pass.

[0013] According to an embodiment of the present invention, among the multiple screens, at least one screen is shorter than the other screens, and along the direction from top to bottom, the number of screen layers in the first area is less than the number of screen layers in the second area.

[0014] According to one embodiment of the present invention, the number of sieves below the first area is 4 to 6 layers; the number of sieves below the second area is 5 to 7 layers.

[0015] The utility model also provides an asphalt mixing station, comprising: the vibrating screen of the above embodiment.

[0016] The characteristics and advantages of the vibrating screen and asphalt mixing station of the utility model are:

[0017] When aggregate falls toward the screen along a first direction, the mesh holes of a first area of ​​at least one screen are smaller than the mesh holes of a second area. For ease of understanding and description, taking the first direction as the direction from left to right as an example, the first area may be the left half of the screen, and the second area may be the right half of the screen. Since the mesh holes of the left half of the screen are smaller than the mesh holes of the right half of the screen, more aggregate passes through the right half when falling. Compared with the prior art, the utility model can improve the utilization rate of the screen through the above-mentioned structural arrangement, thereby improving the screening efficiency of the screen. The situation in the prior art where the left part of the screen cannot be screened through and the right part of the screen has no material to screen will not occur, thereby solving the technical problem of low utilization rate of the screen in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a front view schematic diagram of the aggregate screening device of the utility model.

[0020] Figure 2 It is a partial structural schematic diagram of the aggregate screening device of the utility model.

[0021] Figure 3 It is a schematic diagram of the screen of the utility model.

[0022] Figure 4 It is a three-dimensional schematic diagram of the material guiding component of the utility model.

[0023] Reference numerals:

[0024] 100, screen; 110, first area; 120, second area; 200, material reduction net; 300, screen box; 400, aggregate dispersion component; 410, first connecting piece; 420, second connecting piece; 430, dispersion ribs; F, first direction; S, second direction; T, thickness direction of the screen. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described clearly and completely in conjunction with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] In the description of the present embodiment, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present embodiment and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present embodiment.

[0027] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this embodiment, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0028] In this embodiment, unless otherwise clearly specified and limited, the terms "set", "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in this embodiment can be understood according to specific circumstances.

[0029] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0030] Figures 1 to 4The vibrating screen and asphalt mixing plant provided by the utility model are shown. As can be seen from the figure, the vibrating screen of the utility model includes a plurality of screens 100, which are arranged at intervals along the thickness direction T thereof, and the screens 100 include a first area 110 and a second area 120 which are relatively arranged; wherein, when aggregate falls toward the screen 100 along the first direction F, the mesh openings of the first area 110 of at least one screen 100 are smaller than the mesh openings of the second area 120; the first direction F is the direction from the first area 110 to the second area 120.

[0031] During specific implementation, when aggregate falls toward the screen 100 along the first direction F, the mesh holes of the first area 110 of at least one screen 100 are smaller than the mesh holes of the second area 120. For ease of understanding and description, taking the first direction F as the direction from left to right as an example, the first area 110 may be the left half of the screen 100, and the second area 120 may be the right half of the screen 100. Since the mesh holes of the screen 100 in the left half are smaller than the mesh holes of the screen 100 in the right half, when aggregate falls, more aggregate passes through the right half. Compared with the prior art, the utility model can improve the utilization rate of the screen 100 through the above-mentioned structural setting, thereby improving the screening efficiency of the screen 100. The situation in the prior art where the left part of the screen 100 cannot be screened and the right part of the screen 100 has no material to screen will not occur, thereby solving the technical problem of low utilization rate of the screen 100 in the prior art.

[0032] In this embodiment, the size of the mesh of at least one sieve 100 gradually expands along the first direction F; for example, the sieve 100 may be the top sieve 100; the mesh may be a circular hole, that is, the aperture of the mesh on the left half of the top sieve 100 is larger than the aperture of the mesh on the right half.

[0033] According to an embodiment of the present invention, the vibrating screen of the present invention may further include a material reduction mesh 200 sandwiched between two adjacent screen meshes 100 to reduce the amount of aggregate moving from the first area 110 to the second area 120 .

[0034] In specific implementation, through the above-mentioned structural setting, the material reduction net 200 can hinder the movement of aggregates, so that compared with the prior art, less aggregates move to the second area 120, thereby further improving the screening efficiency of the screen 100, and the situation in the prior art where the left part of the screen 100 cannot screen through and the right part of the screen 100 has no material to screen will not occur.

[0035] In this embodiment, the subtractive net 200 is disposed obliquely toward the second region 120 from top to bottom.

[0036] According to an embodiment of the present invention, the vibrating screen of the present invention may further include a screen box 300 , wherein the plurality of screens 100 are located in the screen box 300 , and the edges of the plurality of screens 100 are connected to the side wall of the screen box 300 .

[0037] During specific implementation, the screen box 300 can provide a mounting base for the screen 100 to support the screen 100 .

[0038] According to one embodiment of the utility model, the vibrating screen of the utility model may further include an aggregate dispersion component 400, which is located above the screen 100 and connected to the screen box 300. The aggregate dispersion component 400 is used to disperse the aggregate on the screen 100 along a second direction S; the second direction S is set at an angle (for example, 90 degrees) to the first direction F.

[0039] During specific implementation, the aggregate dispersing component 400 can disperse the aggregate so that the aggregate is spread on the screen 100 , so as to further improve the utilization rate of the screen 100 .

[0040] In this embodiment, the aggregate dispersion component 400 includes a first connecting member 410, a second connecting member 420 and a plurality of dispersion ribs 430; the first connecting member 410 and the second connecting member 420 are arranged relatively to each other along the second direction S, and the first connecting member 410 is connected to the second connecting member 420 through a plurality of dispersion ribs 430; the dispersion ribs 430 are extended along the second direction S, and the plurality of dispersion ribs 430 are arranged to form a cage structure through which aggregate can pass.

[0041] According to one embodiment of the present invention, among the multiple sieves 100 , at least one sieve 100 is shorter than the other sieves 100 , and along the top-to-bottom direction, the number of layers of sieves 100 in the first area 110 is less than the number of layers of sieves 100 in the second area 120 .

[0042] In this embodiment, the number of the sieves 100 below the first area 110 is 4 to 6 layers; the number of the sieves 100 below the second area 120 is 5 to 7 layers.

[0043] The utility model also provides an asphalt mixing plant, comprising the vibrating screen of the above embodiment. The specific structure, working principle and beneficial effects of the vibrating screen are the same as those of the above embodiment, and will not be described in detail here.

[0044] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "mode", "specific mode", or "some modes" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or mode are included in at least one embodiment or mode of the utility model embodiment. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or mode. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or modes in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or modes described in this specification and the features of the different embodiments or modes, without contradiction.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A vibrating screen, characterized in that: include: A plurality of screens (100), wherein the plurality of screens (100) are arranged at intervals along a thickness direction (T) thereof, and the screens (100) include a first region (110) and a second region (120) that are arranged opposite to each other; Wherein, when aggregate falls toward the screen (100) along a first direction (F), the mesh openings of the first region (110) of at least one of the screens (100) are smaller than the mesh openings of the second region (120); the first direction (F) is the direction from the first region (110) to the second region (120).

2. The vibrating screen according to claim 1, characterized in that: The size of the mesh openings of at least one of the screens (100) gradually expands along the first direction (F).

3. The vibrating screen according to claim 1, characterized in that: It also includes a material reduction net (200) which is sandwiched between two adjacent screens (100) and is used to reduce the amount of aggregate moving from the first area (110) to the second area (120).

4. The vibrating screen according to claim 3, characterized in that: The material reduction net (200) is arranged to be inclined from top to bottom toward the second area (120).

5. The vibrating screen according to claim 1, characterized in that: It also comprises a screen box (300), wherein a plurality of screens (100) are located in the screen box (300), and edges of the plurality of screens (100) are connected to the side wall of the screen box (300).

6. The vibrating screen according to claim 5, characterized in that: It also includes an aggregate dispersing component (400), the aggregate dispersing component (400) is located above the screen (100) and connected to the screen box (300), and the aggregate dispersing component (400) is used to disperse aggregate on the screen (100) along a second direction (S); The second direction (S) is arranged at an angle with the first direction (F).

7. The vibrating screen according to claim 6, characterized in that: The aggregate dispersing component (400) comprises a first connecting member (410), a second connecting member (420) and a plurality of dispersing ribs (430); The first connecting member (410) and the second connecting member (420) are arranged opposite to each other along the second direction (S), and the first connecting member (410) is connected to the second connecting member (420) via a plurality of the dispersion ribs (430); The dispersion ribs (430) are extended along the second direction (S), and a plurality of the dispersion ribs (430) are arranged to form a cage structure through which the aggregate can pass.

8. The vibrating screen according to any one of claims 1 to 7, characterized in that: Among the multiple sieves (100), at least one sieve (100) is shorter than the other sieves (100), and along the direction from top to bottom, the number of layers of the sieves (100) in the first area (110) is less than the number of layers of the sieves (100) in the second area (120).

9. The vibrating screen according to claim 8, characterized in that: The screen (100) below the first area (110) has 4 to 6 layers; The sieve (100) below the second area (120) has 5 to 7 layers.

10. An asphalt mixing plant, characterized in that: include: A vibrating screen as claimed in any one of claims 1 to 9.

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