A screw conveyor for cement clinker

Abstract

The application discloses a spiral conveyor of cement clinker, which comprises a walking mechanism, a rotating tower, a horizontal arm, a vertical arm and a spiral conveying module. The walking mechanism is provided with a tower body on the top. The rotating tower is arranged on the top of the tower body. The horizontal arm is swingingly installed on the rotating tower. The horizontal arm is provided with a horizontal conveying cavity. The horizontal conveying cavity is provided with a horizontal spiral shaft. The rear end of the horizontal arm is provided with a horizontal driving device for driving the horizontal spiral shaft to rotate. The vertical arm is swingingly installed on the last segment position of the horizontal arm. The vertical arm is provided with a vertical spiral shaft. The rear end of the vertical arm is provided with a vertical driving device for driving the vertical spiral shaft to rotate. The spiral conveying module comprises an outer pipeline, an inner pipeline and a plurality of curved surface blades integrally extended from the inner pipeline. The outer pipeline is provided with a magnetic induction coil. The inner pipeline is integrally formed with a permanent magnet. The outer pipeline and the inner pipeline are made of non-magnetic material. The plurality of curved surface blades extend to the axial center direction and surround an axial avoidance groove.

Description

Technical Field

[0001] This invention relates to the field of unloading equipment, and in particular to a screw conveyor for cement clinker. Background Technology

[0002] A ship unloader is a specialized machine that uses continuous conveying machinery to lift bulk materials, sometimes with self-loading capabilities, or equipped with material handling and feeding devices. It continuously lifts bulk materials from the ship's hold, unloads them onto a boom or frame, and transports them to the main conveyor system on shore. Using a ship unloader significantly improves unloading efficiency, minimizes dust pollution, maintains a clean environment, and is highly efficient and environmentally friendly.

[0003] Existing screw conveyors generally use a vertical screw conveying device in conjunction with a horizontal conveying device to achieve conveying. However, in the actual process of conveying cement clinker, material accumulation may occasionally occur, leading to screw conveyor jamming. The main reason is that the screw resistance of the material is too high in a certain section of the conveying pipeline, which affects the speed of the screw. Therefore, a drive chute is usually equipped at the end and used in conjunction with a negative pressure fan to achieve conveying.

[0004] Cement clinker is a semi-finished product made from limestone, clay, and iron as the main raw materials, mixed in appropriate proportions to form raw meal, burned until partially or completely melted, and then cooled. Therefore, cement clinker is composed of blocks of varying sizes and also includes powder.

[0005] Therefore, the driven chute cannot convey cement clinker. However, in the final and horizontal sections of the actual screw conveyor, powdery cement clinker will appear, causing the blocky structure to slip, which in turn affects the conveying. If a fan is used, it will result in a large amount of external dust, causing environmental pollution. Summary of the Invention

[0006] The main objective of this invention is to propose a screw conveyor for cement clinker, which aims to reduce material accumulation and ensure stable conveying by using a screw conveying structure combined with a shaftless impeller drive. Furthermore, it can reduce the need for bag replacement or even eliminate the need for bags, thereby improving production stability.

[0007] To achieve the above objectives, the present invention provides a screw conveyor for cement clinker, comprising:

[0008] A traveling mechanism, with a tower body mounted on top of the traveling mechanism.

[0009] A rotating tower, wherein the rotating tower is located at the top of the tower body;

[0010] A horizontal arm, oscillatingly mounted on a rotating tower, is provided with a horizontal conveying chamber, which in turn is equipped with a horizontal helical shaft.

[0011] The rotating tower is provided with a rotating driving assembly for driving the horizontal arm to rotate along its axis.

[0012] The rear end of the horizontal arm is provided with horizontal driving devices for driving the horizontal screw shaft to rotate.

[0013] The vertical arm is swingingly installed at the end position of the horizontal arm, and is provided with a vertical screw shaft.

[0014] The end position of the vertical arm is further provided with a material taking head, and the end position of the vertical arm is provided with material taking rotating devices for driving the material taking head to rotate.

[0015] The horizontal arm is provided with a horizontal material inlet and a horizontal material outlet, and the vertical arm is provided with a vertical material inlet and a vertical material outlet.

[0016] The horizontal material outlet is connected with a driving chute.

[0017] The spiral conveying module comprises an outer pipeline, an inner pipeline and a plurality of curved surface blades integrally extended from the inner pipeline.

[0018] The spiral conveying module comprises a first spiral conveying module and a second spiral conveying module.

[0019] The horizontal arm is composed of a plurality of horizontal pipelines, and the first spiral conveying module is arranged between adjacent horizontal pipelines.

[0020] The driving chute is composed of a plurality of chute pipelines, and the second spiral conveying module is arranged between adjacent chute pipelines.

[0021] Technical effects of the present application:

[0022] 1. The embedded spiral conveying module can effectively improve the fluid pressure and avoid the accumulation of single mechanical conveying, thereby solving the problem of increased resistance of the partial segment screw shaft.

[0023] 2、Wherein the design of multi-curved surface blade (i.e. inner spiral structure), both can meet the cement clinker spiral conveying (the multi-curved surface blade is provided with a plurality of and is arranged at intervals along the inner pipe body, wherein the multi-curved surface is a wave blade extending along the inner pipe), can form a predetermined flow pressure, and then realize the spiral conveying while improving the pipe flow rate, and can also convey the cement clinker;

[0024] 3、Wherein the spiral conveying module, although simple in structure, can transport the horizontal pipe in sections, thereby reducing the high transportation cost of large machinery in the transportation process, achieving the function of the shaft coupling, realizing one thing with two purposes, and effectively solving the problem that the spiral shaft cannot increase the structure to improve the conveying effect;

[0025] 4、The spiral conveying module can realize the design without a bag, thereby realizing the conveying of the cement clinker, the structure is more stable, and the noise is smaller, avoiding the problems of empty load and particle slip, and further reducing the problem of accumulation. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is the overall structure engineering drawing of the present application;

[0027] Figure 2 is a schematic view of the spiral conveying module and the horizontal pipe;

[0028] Figure 3 is a sectional view of the adjustable support;

[0029] Figure 4 is a schematic view of the spiral conveying module;

[0030] Figure 5 is an exploded view of the spiral conveying module;

[0031] Figure 6 is a schematic view of the multi-curved surface blade Figure 1 ;

[0032] Figure 7 is a schematic view of the multi-curved surface blade Figure 2 .

[0033] In the figure,

[0034] 1 is a walking mechanism, 10 is a tower body, 11 is a rotating tower, 12 is a horizontal arm, 13 is a vertical arm, 14 is a material taking head, 15 is a driving chute,

[0035] 2 is a spiral conveying module, 21 is an outer pipe, 22 is an inner pipe, 23 is a multi-curved surface blade, 24 is a magnetic induction coil 24, and 25 is a permanent magnet,

[0036] 3 is a horizontal pipe,

[0037] 41 is a smooth section, 42 is an anti-axle groove,

[0038] 51 is a sealed bearing, 52 is a retainer,

[0039] 6 is an adjustable support, 61 is an adjusting rod, 62 is a locating bearing,

[0040] 71 is a first pivot point, 72 is a master hydraulic rod,

[0041] 81 is a first hydraulic rod, 82 is a second hydraulic rod. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0043] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, top, bottom, inner, outer, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial, etc.), the directional indications are only used to explain the relative positional relationship, movement condition, etc. between the components in a certain posture (as shown in the drawings). If the certain posture changes, the directional indications also change accordingly.

[0044] In addition, if the embodiments of the present application involve descriptions of “first” or “second”, etc., the descriptions of “first” or “second”, etc. are only for description purposes, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by “first” and “second” can explicitly or implicitly include at least one of the features. In addition, the technical solutions of the various embodiments can be combined with each other, but it must be based on the fact that a person skilled in the art can realize it. When the combination of technical solutions contradicts each other or cannot be realized, it should be considered that the combination of technical solutions does not exist and is not within the protection scope of the present application.

[0045] As shown in Figures 1 to 7 a cement clinker screw conveyor, comprising:

[0046] a walking mechanism 1, an upper portion of the walking mechanism 1 being provided with a tower body 10,

[0047] a rotating tower 11, the rotating tower 11 being arranged at a top portion of the tower body 10;

[0048] Horizontal arm 12, which is swingly installed on rotating tower 11, is provided with horizontal conveying cavity, which is provided with horizontal screw shaft,

[0049] Rotating tower 11 controls swing of front end of horizontal arm 12 through first hydraulic rod 81, and is provided with rotating driving assembly to drive horizontal arm 12 to rotate along its axis;

[0050] Back end of horizontal arm 12 is provided with horizontal driving device to drive horizontal screw shaft to rotate;

[0051] Vertical arm 13, which is swingly installed on end position of horizontal arm 12, is provided with vertical screw shaft, and back end of vertical arm 13 is provided with vertical driving device to drive vertical screw shaft to rotate;

[0052] End of vertical arm 13 is further provided with material taking head 14, and end of vertical arm 13 is provided with material taking rotating device to drive material taking head 14 to rotate;

[0053] Horizontal arm 12 is provided with horizontal inlet and horizontal outlet, and vertical arm 13 is provided with vertical inlet and vertical outlet;

[0054] Horizontal outlet is connected with driving chute 15;

[0055] Screw conveying module 2 (i.e. structure of realizing screw type fluid conveying by adopting shaftless motor, and middle shaftless structure), which comprises outer pipeline 21, inner pipeline 22 and multiple curved surface blades 23 integrally extended from inner pipeline 22, outer pipeline 21 is provided with magnetic induction coil 24, inner pipeline 22 is integrally formed with permanent magnet 25, outer pipeline 21 and inner pipeline 22 are non-magnetic materials, multiple curved surface blades 23 are provided with multiple and extend to axis direction and surround shaft avoiding groove 42,

[0056] Screw conveying module 2 comprises first screw conveying module 2 and second screw conveying module 2;

[0057] Horizontal arm 12 is composed of multiple horizontal pipelines 3, first screw conveying module is arranged between adjacent horizontal pipelines 3, horizontal pipelines 3 are connected with first screw conveying module through screw rod or first coupling, smooth section 41 is arranged at position of first screw conveying module of horizontal screw shaft, and smooth section 41 is arranged at position of shaft avoiding groove 42;

[0058] Driving chute 15 is composed of multiple groove pipes, and adjacent groove pipes are connected through second screw conveying module.

[0059] Technical effects of the application:

[0060] 1. The embedded spiral conveying module 2 can effectively improve the fluid pressure and avoid the accumulation of single mechanical conveying, which causes the problem of increased resistance of the spiral shaft;

[0061] 2. The design of the multi-curved surface blade 23 can meet the design of spiral conveying cement clinker, form a predetermined flow pressure, and realize spiral conveying while improving the pipeline flow rate. It can also convey cement clinker in a spiral manner;

[0062] 3. The spiral conveying module 2, although simple in structure, can transport the horizontal pipeline 3 in segments, thereby reducing the high transportation cost of large machinery during transportation, achieving the function of a shaft coupling, realizing one thing with two purposes, and effectively solving the problem of the spiral shaft that cannot be increased in structure to improve the conveying effect;

[0063] 4. The use of the spiral conveying module can realize a bagless design, thereby realizing the conveying of cement clinker, which is more stable in structure and has less noise, avoids the problems of empty load and particle slip, and further reduces the problem of accumulation.

[0064] Specifically, the inner pipeline 22 and the outer pipeline 21 are made of aluminum alloy casting, preferably hard aluminum alloy casting, to meet the processing requirements of large machinery.

[0065] Specifically, the outer wall of the inner pipeline 22 and the multi-curved surface blade 23 is provided with a wear-resistant ceramic layer, such as an inner lining of corundum ceramic aluminum alloy, to meet the service life requirements of large machinery and reduce processing costs.

[0066] Specifically, the wear-resistant ceramic layer is locked by a screw. Compared with existing coatings in large machinery, the use of a screw for direct fixation allows for easy replacement, greater wear resistance, and thus reduces the need for complete replacement when the coating wears out.

[0067] Specifically, a rotating gap is provided between the inner wall of the inner pipeline 22 and the outer wall of the outer pipeline 21, and a sealing bearing 51 is provided in the rotating gap. The two ends of the sealing bearing 51 are provided with a retainer ring 52, the retainer ring 52 is annular, and the outer peripheral wall of the retainer ring 52 is provided with an elastic ring, thereby effectively preventing the entry of foreign matter.

[0068] Specifically, the outer pipeline 21 is provided with adjustable supports 6 at both ends, which are used to support the smooth section 41.

[0069] Specifically, the adjustable support 6 comprises a hole position of the outer pipe 21 and an adjusting rod 61 installed in the hole position, the adjusting rod 61 is provided with at least three, the middle part of the adjusting rod 61 is provided with a positioning bearing 62, and the two ends of the smooth section 41 are arranged on the positioning bearing 62, so that the outer pipe 21 and the positioning bearing 62 are combined into the same module, thereby ensuring the consistency of the shaft center of the horizontal screw shaft rotation.

[0070] By adjusting the relative position of the positioning bearing 62, the support property and coaxiality of the horizontal screw shaft are realized.

[0071] Specifically, the tower body 10 extends upwardly with a support rod, the top end of the support rod extends toward the horizontal arm 12 with a plurality of second hydraulic rods, and the rear end of the horizontal arm 12 is provided with a weight counterbalance block.

[0072] Specifically, a first pivot point 71 is arranged between the vertical arm 13 and the horizontal arm 12, and a driving hydraulic rod 72 is arranged between the front ends of the vertical arm 13 and the horizontal arm 12, one end of the driving hydraulic rod 72 is pivotally connected with the vertical arm 13, and the other end is arranged adjacent to the lower end of the second hydraulic rod of the foremost section.

[0073] A spacing is arranged between the upper end of the driving hydraulic rod 72 and the first pivot point 71, thereby effectively ensuring the balance of the screw conveyor, simplifying the complexity of the fulcrum calculation, and improving the use stability and safety.

[0074] Specifically, the upper end of the first hydraulic rod is provided with the lower wall of the horizontal arm 12, and the lower end is provided with the middle part of the tower body 10, thereby forming a fulcrum structure.

[0075] Specifically, when the inner diameter of the inner pipe 22 is 80CM, the pitch ratio = 1.5 (P / D = 1.5), the balance conveying efficiency and flow pressure are ensured.

[0076] That is, the multi-curved surface blade 23 can be formed by a spiral or can be arranged as a curved surface, wherein the angle of the multi-curved surface blade 23 is 20° at the inlet section (promoting feeding) and 10° at the outlet section (enhancing flow pressure).

[0077] The conveying capacity Q = 47⋅D2⋅n⋅ψ⋅ρ⋅C

[0078] D = 0.8m, the rotation speed n = 200rpm,

[0079] The filling rate ψ = 0.3 (cement clinker);

[0080] The density ρ = 1.5t / m³, and the inclination coefficient C = 1.

[0081] It is calculated that Q ≈ 90t / h (satisfying the demand of a medium-sized cement plant).

[0082] Flow pressure forming ability, multi-curved blade 23 end linear velocity: v = πDn / 60 ≈ 8.4 m / s;

[0083] Flow pressure value: ΔP = 0.5 * ζ * ρair * v2 ≈ 0.8 kPa (ζ = 1.2, ρ a ᵢᵣ=1.2kg / m³).

[0084] The above only describes the preferred embodiments of the present application, and does not limit the patent scope of the present application. Any equivalent structural transformation, direct / indirect application in other related technical fields, or use of the content of the present application specification and drawings within the inventive concept of the present application is included in the patent protection scope of the present application.

Claims

1. A screw conveyor for cement clinker, characterized in that, The utility model relates to a kind of tower crane, including: Walking mechanism, the upper of the walking mechanism is equipped with tower body, Rotary tower, the top of tower body is equipped with, Horizontal arm, swing installation is installed on rotary tower, horizontal arm is equipped with horizontal conveying cavity, horizontal conveying cavity is equipped with horizontal screw shaft, The rotary tower is controlled by first hydraulic rod swing the swing of horizontal arm front end, and the rotary tower is equipped with rotary drive assembly and drives horizontal arm to rotate along its axis center; The rear end of the horizontal arm is equipped with horizontal drive device and drives horizontal screw shaft to rotate; Vertical arm, swing installation is installed in the last section position of horizontal arm, vertical arm is equipped with vertical screw shaft, and the rear end of vertical arm is equipped with vertical drive device and drives vertical screw shaft to rotate; The last section of the vertical arm is further equipped with material taking head, and the last section of the vertical arm is equipped with material taking rotation device and drives material taking head to rotate; Horizontal arm is equipped with horizontal inlet and horizontal outlet, and vertical arm is equipped with vertical inlet and vertical outlet; The horizontal outlet is connected with drive chute; Screw conveying module, the screw conveying module includes outer pipeline, inner pipeline and multiple curved surface blades integrally extended from inner pipeline, the outer pipeline is equipped with magnetic induction coil, the inner pipeline is integrally formed with permanent magnet, the outer pipeline and inner pipeline are non-magnetic material, the multiple curved surface blades are provided with multiple and extend to the direction of axis center and surround shaft-avoiding groove, The screw conveying module includes first screw conveying module and second screw conveying module; The horizontal arm is composed of multiple horizontal pipelines, the first screw conveying module is arranged between adjacent horizontal pipelines, the horizontal pipeline is connected with the first screw conveying module through screw rod or first coupling, the position of the horizontal screw shaft in the first screw conveying module is provided with smooth section, and the smooth section is arranged at the position of the shaft-avoiding groove; The drive chute is composed of multiple groove pipes, and the second screw conveying module is connected between adjacent groove pipes.

2. A screw conveyor of cement clinker as claimed in claim 1, characterized in that: The inner pipeline and outer pipeline are formed by aluminum alloy casting.

3. A screw conveyor of cement clinker as claimed in claim 1, characterized in that: The outer wall of the inner pipeline and the multiple curved surface blades is provided with wear-resistant ceramic layer, and the multiple curved surface blades include multiple curved leaves arranged at intervals.

4. A screw conveyor of cement clinker as claimed in claim 3, characterized in that: The wear-resistant ceramic layer is locked by screw rod.

5. A screw conveyor of cement clinker as claimed in claim 4, characterized in that: The inner wall of the inner pipeline and the outer wall of the outer pipeline are provided with rotation gap, the rotation gap is provided with sealing bearing, both ends of the sealing bearing are provided with retainer, the retainer is annular, and the outer peripheral wall of the retainer is provided with elastic ring.

6. A screw conveyor of cement clinker as claimed in claim 1, characterized in that: Both ends of the outer pipeline are provided with adjustable supports, and the adjustable supports are used to support the smooth section.

7. A screw conveyor of cement clinker as claimed in claim 6, characterized in that: The adjustable support includes hole position arranged on the outer pipeline and adjusting rod installed on the hole position, the adjusting rod is provided with at least three, the middle part of the adjusting rod is provided with positioning bearing, and both ends of the smooth section are arranged on the positioning bearing.

8. A screw conveyor of cement clinker as claimed in claim 1, characterized in that: The tower body extends upwardly with support rod, the top end of the support rod extends toward the horizontal arm with multiple second hydraulic rods, The rear end of the horizontal arm is provided with weight balancing block.

9. Screw conveyor of cement clinker according to claim 8, characterized in that: The first pivot point is arranged between the vertical arm and the horizontal arm, the active hydraulic rod is arranged between the front ends of the vertical arm and the horizontal arm, one end of the active hydraulic rod is pivotally connected with the vertical arm, and the other end is arranged adjacent to the lower end of the second hydraulic rod of the most front section, The upper end of the active hydraulic lever is spaced from the first pivot point.

10. Screw conveyor of cement clinker according to claim 9, characterized in that: The upper end of the first hydraulic lever is provided with a lower wall of the horizontal arm, and the lower end is provided with a middle part of the tower body.

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