Screw conveyer

Abstract

The utility model discloses a spiral conveyor. The spiral conveyor comprises a shell, a first spiral conveying piece and a second spiral conveying piece. The shell is provided with a conveying groove, and the conveying groove conveys materials in the first direction. The first spiral conveying piece is rotatably arranged in the conveying groove, and the first spiral conveying piece spirally extends in the first direction; the second spiral conveying part is rotatably arranged in the conveying groove, the second spiral conveying part spirally extends in the first direction, the second spiral conveying part and the first spiral conveying part are arranged in parallel and rotate at the same speed, and in the rotating direction, the first spiral conveying part and the second spiral conveying part rotate at the same speed. The spiral blades of the second spiral conveying piece and the spiral blades of the first spiral conveying piece are arranged in a staggered mode. According to the spiral conveyor, the conveying efficiency of alternative fuel can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of conveying equipment, in particular to a screw conveyor. Background Art

[0002] In existing technologies, the cement clinker production process requires the combustion of large amounts of fossil fuels to provide heat. To alleviate the cement industry's dependence on fossil fuels, reduce coal usage and carbon emissions in cement kilns, and promote low-carbon, environmentally friendly, and emission-reducing cement production, there are technical solutions to reduce dependence on fossil fuels by increasing the use of alternative fuels.

[0003] Alternative fuels involve a mixture of various substances, such as sticky, fibrous, long ribbons, powdered, granular, etc. (such as grease, biomass fuel, waste cloth, etc.). When transported using existing screw conveying equipment, they are prone to getting stuck and affecting the transportation efficiency. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems in the prior art. To this end, the present invention provides a screw conveyor that can improve the conveying efficiency of alternative fuels.

[0005] The present invention further provides a screw conveyor, comprising:

[0006] A housing having a conveying trough for conveying material in a first direction;

[0007] A first spiral conveying member is rotatably disposed in the conveying trough, and the first spiral conveying member spirally extends along a first direction;

[0008] a second spiral conveying member rotatably disposed in the conveying trough, the second spiral conveying member spirally extending in a first direction, the second spiral conveying member being arranged in parallel with the first spiral conveying member and rotating at the same speed;

[0009] The projections of a line connecting the starting point of the spiral blade of the first spiral conveyor and the center line of the first spiral conveyor and a line connecting the starting point of the spiral blade of the second spiral conveyor and the center line of the second spiral conveyor on a plane perpendicular to the first direction intersect.

[0010] In some embodiments, on a plane passing through the central axis of the first screw conveying member and the central axis of the second screw conveying member, the rotation path of the first screw conveying member and the rotation path of the second screw conveying member partially overlap.

[0011] In some embodiments, the first spiral conveying member and the second spiral conveying member have opposite rotation directions.

[0012] In some embodiments, the tangent direction of the point on the edge of the spiral blade of the first spiral conveyor closest to the rotation path of the second spiral conveyor is upward, and the tangent direction of the point on the edge of the spiral blade of the second spiral conveyor closest to the rotation path of the first spiral conveyor is upward.

[0013] In some embodiments, the first spiral conveying member and the second spiral conveying member each include a rotating shaft and a spiral blade, one end of the spiral blade is spirally wound around the rotating shaft along a first direction, and the other end of the spiral blade is suspended in the air.

[0014] In some embodiments, the housing has a feed port connected to the conveying trough, and the rotating shafts of the first spiral conveying member and the second spiral conveying member are rotatably disposed at one end of the housing having the feed port.

[0015] In some embodiments, the rotating shaft partially extends out of the conveying trough;

[0016] The screw conveyor further includes a gear, which is arranged at the portion of the rotating shaft extending out of the conveying trough. The gears on the two rotating shafts have the same number of teeth and mesh with each other.

[0017] In some embodiments, the edge of the spiral blade has a plurality of intersections with a straight line extending along a first direction, and along the first direction, the distance between adjacent intersections gradually increases.

[0018] In some embodiments, the housing has a feed port and a discharge port, and the feed port and the discharge port are sequentially arranged along a first direction;

[0019] Along the direction of gravity, the feed port is arranged at the top of the shell, and the discharge port is arranged at the bottom of the shell.

[0020] In some embodiments, the shell includes a top shell and a bottom shell, and the top shell is covered on the bottom shell and fastened to enclose the conveying trough.

[0021] The screw conveyor according to the embodiment of the utility model has at least the following beneficial effects:

[0022] By providing two parallel first and second spiral conveying members, the projections of a line connecting the starting point of the spiral blade of the first spiral conveying member and the centerline of the first spiral conveying member and a line connecting the starting point of the spiral blade of the second spiral conveying member and the centerline of the second spiral conveying member intersect on a plane perpendicular to the first direction. During material transport, material between the spiral blades of the first spiral conveying member can be squeezed and cut by the spiral blades of the second spiral conveying member, while material between the spiral blades of the second spiral conveying member can be squeezed and cut by the spiral blades of the first spiral conveying member, thereby reducing the probability of material agglomeration, thereby reducing the probability of the first and second spiral conveying members getting stuck, and improving material transport efficiency.

[0023] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0025] Figure 1 This is a schematic structural diagram of a screw conveyor according to an embodiment of the present utility model;

[0026] Figure 2 This is a schematic structural diagram of the first spiral conveying member and the second spiral conveying member of the screw conveyor according to an embodiment of the present utility model.

[0027] Reference numerals:

[0028] 10. Shell; 10a. Feed port; 10b. Discharge port; 11. Surface shell; 12. Bottom shell;

[0029] 20. First spiral conveying member; 21. Rotating shaft; 22. Spiral blade;

[0030] 30. Second spiral conveyor. DETAILED DESCRIPTION

[0031] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0032] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0033] In the description of this utility model, "several" means more than one, "plurality" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of the terms "first" and "second" is solely for the purpose of distinguishing technical features and is not to be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0034] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0035] In the description of the present invention, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the exemplary expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0036] Please refer to Figure 1 and Figure 2 An embodiment of the present application provides a screw conveyor, which includes a housing 10 , a first screw conveying member 20 , and a second screw conveying member 30 .

[0037] The housing 10 has a conveying trough, within which the first and second screw conveying members 20 and 30 are rotatably disposed. The housing 10 has an inlet 10a and an outlet 10b. The inlet 10a is used to allow material to enter the conveying trough, while the outlet 10b is used to allow material to exit the conveying trough. The material in this case is alternative fuel.

[0038] Along the first direction, the feed port 10a and the discharge port 10b are connected to the conveying trough in sequence. It can be understood that the first direction, that is, the direction in which the material is transported in the screw conveyor, is that the material enters the conveying trough from the feed port 10a, is transported along the first direction, and is discharged from the discharge port 10b.

[0039] The first screw conveying member 20 extends spirally in a first direction. The second screw conveying member 30 extends spirally in the first direction. In other words, the first screw conveying member 20 and the second screw conveying member 30 extend in the same direction and both extend spirally.

[0040] The second screw conveying member 30 is arranged in parallel with the first screw conveying member 20. The term "arranged in parallel" means that the first screw conveying member 20 is parallel to the second screw conveying member 30 and is arranged in the first direction without any order of the first and second screw conveying members.

[0041] The first screw conveyor 20 and the second screw conveyor 30 rotate at the same speed, and the projections of the line connecting the starting point of the spiral blade of the first screw conveyor 20 and the centerline of the first screw conveyor 20 and the line connecting the starting point of the spiral blade of the second screw conveyor 30 and the centerline of the second screw conveyor 30 on a plane perpendicular to the first direction intersect. In other words, on the plane perpendicular to the first direction, when the spiral blade 22 of the first screw conveyor 20 rotates to the position closest to the rotation path of the second screw conveyor 30, the spiral blade of the second screw conveyor 30 is not in a position closest to the rotation path of the first screw conveyor 20. At this time, the spiral blade 22 of the first screw conveyor 20 can squeeze and cut the material between the spiral blades of the second screw conveyor 30. Similarly, when the spiral blades 22 of the second spiral conveyor 30 rotate to the position closest to the rotation path of the first spiral conveyor 20, the blades of the first spiral conveyor 20 are not at a position closest to the rotation path of the first spiral conveyor 20. At this time, the spiral blades 22 of the second spiral conveyor 30 can squeeze and cut the material between the spiral blades of the first spiral conveyor 20. The rotation paths of the first and second spiral conveyor 20, 30 are cylindrical.

[0042] By arranging two parallel first spiral conveying members 20 and second spiral conveying members 30, and making the projections of the line connecting the starting point of the spiral blade of the first spiral conveying member 20 and the center line of the first spiral conveying member 20 and the line connecting the starting point of the spiral blade of the second spiral conveying member 30 and the center line of the second spiral conveying member 30 intersect on the plane perpendicular to the first direction, during the process of conveying materials, the materials between the spiral blades 22 of the first spiral conveying member 20 can be squeezed and cut by the spiral blades 22 of the second spiral conveying member 30, and at the same time, the materials between the spiral blades 22 of the second spiral conveying member 30 can be squeezed and cut by the spiral blades 22 of the first spiral conveying member 20, thereby reducing the probability of material agglomeration, thereby reducing the probability of the first spiral conveying member 20 and the second spiral conveying member 30 being stuck, and improving the efficiency of material transmission.

[0043] It is understandable that the interval between the first spiral conveying member 20 and the second spiral conveying member 30 is not limited.

[0044] In some embodiments, the rotational path of the first screw conveying member 20 partially overlaps with the rotational path of the second screw conveying member 30 on a plane passing through the central axis of the first screw conveying member 20 and the central axis of the second screw conveying member 30. In other words, the spiral blades 22 of the first screw conveying member 20 partially extend into the rotational path of the second screw conveying member 30, and the spiral blades 22 of the second screw conveying member 30 partially extend into the rotational path of the first screw conveying member 20.

[0045] It is understood that the portion where the spiral blades 22 of the first screw conveyor 20 extend into the second screw conveyor 30 can further squeeze and divide the material, preventing it from forming large clumps. Similarly, the portion where the spiral blades 22 of the second screw conveyor 30 extend into the first screw conveyor 20 can further squeeze and divide the material, preventing it from forming large clumps. This reduces the possibility of blockage.

[0046] It is understandable that the rotation directions of the first spiral conveying member 20 and the second spiral conveying member 30 are not limited. For example, the rotation directions of the first spiral conveying member 20 and the second spiral conveying member 30 are the same.

[0047] In some embodiments, the first spiral conveying member 20 and the second spiral conveying member 30 have opposite rotation directions. In this way, the first spiral conveying member 20 and the second spiral conveying member 30 with opposite rotation directions can apply forces in opposite directions to the materials, thereby preventing them from agglomerating.

[0048] In some embodiments, the tangent direction of the point on the edge of the spiral blade 22 of the first spiral conveyor 20 closest to the rotation path of the second spiral conveyor 30 is upward, and the tangent direction of the point on the edge of the spiral blade 22 of the second spiral conveyor 30 closest to the rotation path of the first spiral conveyor 20 is upward.

[0049] In this way, under the action of the spiral blades 22 of the first spiral conveyor 20 and the spiral blades 22 of the second spiral conveyor 30, the material between the first spiral conveyor 20 and the second spiral conveyor 30 is exerted with an upward force. The above force can realize the throwing of the material, and the material can also be subjected to two opposite forces, thereby further separating the material and preventing the material from agglomerating and clogging the screw conveyor.

[0050] It should be noted that alternative fuels contain fibrous materials, which often become continuously entangled on the axial conveying structure, eventually leading to increased stress and even damage to the conveying equipment.

[0051] In some embodiments, the first spiral conveying member 20 and the second spiral conveying member 30 each include a rotating shaft 21 and a spiral blade 22 . One end of the spiral blade 22 is spirally wound around the rotating shaft 21 along a first direction, and the other end of the spiral blade 22 is suspended in the air.

[0052] By having the rotating shaft 21 only partially located at one end of the spiral blade 22 and the other end of the spiral blade 22 suspended in the air, i.e., a shaftless structure, the probability of entanglement of fibrous materials is greatly reduced. Furthermore, the structure is relatively simple, and is completed using conventional processing methods, making it easy to clean and maintain.

[0053] In some embodiments, the rotating shafts 21 of the first and second spiral conveying members 20, 30 are rotatably disposed at the end of the housing 10 having the feed opening 10a. The rotating shafts 21 can provide support for the spiral blades 22. When the feed direction differs from the first direction, the feed itself will impact the first and second spiral conveying members 20, 30. In this case, the rotating shafts 21 can better support the spiral blades 22, reducing their deformation.

[0054] In order to achieve synchronous transmission of the first spiral conveying member 20 and the second spiral conveying member 30 , in some embodiments, the rotating shaft 21 partially extends out of the conveying groove.

[0055] The screw conveyor also includes gears, which are located on the portion of the rotating shaft 21 that extends out of the conveying trough. The gears on the two rotating shafts 21 have the same number of teeth and mesh with each other. This achieves synchronous transmission of the first screw conveyor 20 and the second screw conveyor 30. The gears are located outside the conveying trough to avoid contact with the material.

[0056] In some embodiments, the edge of the spiral blade 22 has a plurality of intersections with a straight line extending along the first direction, and the distances between adjacent intersections gradually increase along the first direction.

[0057] It can be understood that the dimension between two adjacent intersection points is the pitch of the spiral blade 22 , that is, the pitch of the spiral blade 22 gradually increases along the material conveying direction.

[0058] By gradually increasing the pitch of the spiral blades 22 of the first spiral conveyor 20 and the spiral blades 22 of the second spiral conveyor 30, the space in which the material is located gradually increases when the material is conveyed in the first direction, thereby allowing the material to be fully dispersed in space and reducing the problem of material agglomeration. In particular, when the rotation directions of the first spiral conveyor 20 and the second spiral conveyor 30 are opposite, and the tangent direction of the point on the edge of the spiral blade 22 of the first spiral conveyor 20 closest to the rotation path of the second spiral conveyor 30 is upward, and the tangent direction of the point on the edge of the spiral blade 22 of the second spiral conveyor 30 closest to the rotation path of the first spiral conveyor 20 is upward, the first spiral conveyor 20 and the second spiral conveyor 30 generate opposite forces, thereby dispersing the agglomerated material. The gradually increasing pitch significantly reduces the possibility of the dispersed material re-agglomerating.

[0059] To facilitate the conveying of materials, in some embodiments, the feed port 10a is disposed at the top of the housing 10 and the discharge port 10b is disposed at the bottom of the housing 10 along the direction of gravity. That is, the material enters the conveying trough from the feed port 10a under the action of gravity, is conveyed along the first direction to the discharge port 10b, and flows out from the discharge port 10b under the action of gravity.

[0060] For easy maintenance. In some embodiments, the housing 10 includes a top shell 11 and a bottom shell 12, and the top shell 11 is covered on the bottom shell 12 and fastened to enclose a conveying trough. It can be understood that the top shell 11 is covered on the bottom shell 12 to enclose the conveying trough, and the top shell 11 and the bottom shell 12 are fastened to achieve detachability. When it is necessary to inspect, repair or clean the conveying trough, the fastening connection between the top shell 11 and the bottom shell 12 can be released, and the top shell 11 can be removed to expose the first spiral conveying member 20 and the second spiral conveying member 30 inside.

[0061] The shapes of the top shell 11 and bottom shell 12 are not limited. In some embodiments, the surface of the top shell 11 forming the conveying trough is flat, thereby providing space for upward material throwing between the first spiral conveying member 20 and the second spiral conveying member 30. In some embodiments, the surface of the bottom shell 12 forming the conveying trough includes two parallel arcuate grooves, and the first spiral conveying member 20 and the second spiral conveying member 30 are respectively located in the two arcuate grooves.

[0062] In some embodiments, the housing 10 forms a hopper at the feed port 10a and the discharge port 10b. The hopper is a protruding rectangular frame. Materials can be accumulated in the hopper and then transported along the first direction.

[0063] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various modifications can be made within the scope of knowledge possessed by a person skilled in the art without departing from the spirit of the present invention. In addition, the embodiments of the present invention and the features of the embodiments can be combined with each other unless there is a conflict.

Claims

1. A screw conveyor, characterized in that: The screw conveyor comprises: A housing having a conveying trough for conveying material in a first direction; A first spiral conveying member is rotatably disposed in the conveying trough, and the first spiral conveying member spirally extends along a first direction; a second spiral conveying member rotatably disposed in the conveying trough, the second spiral conveying member spirally extending in a first direction, the second spiral conveying member being arranged in parallel with the first spiral conveying member and rotating at the same speed; The projections of a line connecting the starting point of the spiral blade of the first spiral conveyor and the center line of the first spiral conveyor and a line connecting the starting point of the spiral blade of the second spiral conveyor and the center line of the second spiral conveyor on a plane perpendicular to the first direction intersect.

2. The screw conveyor according to claim 1, characterized in that On a plane passing through the central axis of the first screw conveying member and the central axis of the second screw conveying member, a rotation path of the first screw conveying member and a rotation path of the second screw conveying member partially overlap.

3. The screw conveyor according to claim 1, characterized in that The first spiral conveying member and the second spiral conveying member have opposite rotation directions.

4. The screw conveyor according to claim 3, characterized in that The tangent direction of the point on the edge of the spiral blade of the first spiral conveyor closest to the rotation path of the second spiral conveyor is upward, and the tangent direction of the point on the edge of the spiral blade of the second spiral conveyor closest to the rotation path of the first spiral conveyor is upward.

5. The screw conveyor according to claim 1, characterized in that The first spiral conveying member and the second spiral conveying member each include a rotating shaft and a spiral blade. One end of the spiral blade is spirally wound on the rotating shaft along a first direction, and the other end of the spiral blade is suspended in the air.

6. The screw conveyor according to claim 5, characterized in that The shell has a feed port communicated with the conveying trough, and the rotating shafts of the first spiral conveying member and the second spiral conveying member are both rotatably arranged at one end of the shell having the feed port.

7. The screw conveyor according to claim 5, characterized in that The rotating shaft partially extends out of the conveying trough; The screw conveyor further includes a gear, which is arranged at the portion of the rotating shaft extending out of the conveying trough. The gears on the two rotating shafts have the same number of teeth and mesh with each other.

8. The screw conveyor according to any one of claims 1 to 7, characterized in that: The edge of the spiral blade has a plurality of intersections with a straight line extending along a first direction, and along the first direction, the distances between adjacent intersections gradually increase.

9. The screw conveyor according to any one of claims 1 to 7, characterized in that: The shell has a feed port and a discharge port, and the feed port and the discharge port are arranged in sequence along a first direction; Along the direction of gravity, the feed port is arranged at the top of the shell, and the discharge port is arranged at the bottom of the shell.

10. The screw conveyor according to any one of claims 1 to 7, characterized in that: The shell includes a front shell and a bottom shell. The front shell is covered on the bottom shell and fastened to enclose the conveying trough.

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