Anti-blocking screw conveyor for fly ash solid waste conveying

Abstract

The utility model relates to a conveyor equipment technical field, the utility model provides a kind of anti-blocking screw conveyor for fly ash solid waste conveying, it includes: conveyor body, one end of conveyor body is provided with inlet bin, the other end of conveyor body is provided with storage bin, the inside installation of conveyor body is provided with screw rod, the outer wall surface of screw rod is welded and fixed with feeding conveying spiral blade near inlet bin one end, the outer wall surface of screw rod is welded and fixed with discharging conveying spiral blade near storage bin one end, the outer wall surface of screw rod is welded and fixed with middle section conveying spiral blade, the middle section conveying spiral blade is in screw rod intermediate portion;Through the dense number of feeding section ring, the material of inlet bin can be quickly grabbed to form stable push flow, avoid initial accumulation, with conveying advance, the number of decreasing ring reduces material extrusion frequency, the increasing outer diameter gradually reduces the clearance between cylinder wall, both restrict material diffusion and enhance discharging push force, dynamically adapt material state to reduce caking.

Description

Technical Field

[0001] This utility model relates to the field of conveyor equipment technology, specifically to an anti-clogging screw conveyor for conveying fly ash solid waste. Background Technology

[0002] In the field of fly ash solid waste transportation, traditional screw conveyors are commonly used equipment, but they generally face clogging problems due to material characteristics and structural defects. Fly ash particles are fine, easily absorb moisture and adhere, and are prone to agglomeration due to compression during transportation. The screw blades of traditional screw conveyors are mostly designed with equal number of turns and equal outer diameter, which makes it impossible to quickly grab dispersed materials during the feeding stage, and they tend to accumulate at the bottom of the feeding hopper. During the conveying process, the gap between the blades and the cylinder wall is fixed, and the material adhering to the inner wall cannot be removed in time. Over time, it will accumulate and form hardened lumps that fall off and block the channel. To address this, an anti-clogging screw conveyor for conveying fly ash solid waste is proposed. Utility Model Content

[0003] This utility model proposes an anti-clogging screw conveyor for conveying fly ash solid waste. By using a dense number of turns in the feeding section, it can quickly grab the material in the hopper to form a stable pushing flow, avoiding initial accumulation. As the conveyor advances, the decreasing number of turns reduces the frequency of material compression, and the increasing outer diameter gradually reduces the gap between the screw and the cylinder wall, which both restricts material diffusion and enhances the feeding force, dynamically adapting to the material state to reduce agglomeration.

[0004] According to one aspect, at least one embodiment of the present invention provides an anti-clogging screw conveyor for conveying fly ash solid waste, comprising: a conveyor body, a feed bin at one end of the conveyor body, a storage bin at the other end of the conveyor body, a screw rod installed inside the conveyor body, a feeding conveying screw blade welded and fixed to the outer wall surface of the screw rod near the feed bin, a discharging conveying screw blade welded and fixed to the outer wall surface of the screw rod near the storage bin, and a middle conveying screw blade welded and fixed to the outer wall surface of the screw rod, the middle conveying screw blade being located in the middle part of the screw rod.

[0005] For example, at least one embodiment of this utility model provides an anti-clogging screw conveyor for conveying fly ash solid waste, which further includes: the number of thread turns of the feeding conveying screw blade on the screw rod is greater than the number of thread turns of the middle conveying screw blade on the screw rod, and the number of thread turns of the middle conveying screw blade on the screw rod is greater than the number of thread turns of the unloading conveying screw blade on the screw rod.

[0006] For example, at least one embodiment of this utility model provides an anti-clogging screw conveyor for conveying fly ash solid waste, which further includes: the size of the feeding screw blade is smaller than the size of the middle conveying screw blade; the size of the middle conveying screw blade is smaller than the size of the unloading screw blade.

[0007] For example, at least one embodiment of this utility model provides an anti-clogging screw conveyor for conveying fly ash solid waste, which further includes: an elastic scraper fixedly connected to the outer wall of the feeding screw blade, and the elastic scraper is in contact with the inner wall of the conveyor body.

[0008] For example, at least one embodiment of this utility model provides an anti-clogging screw conveyor for conveying fly ash solid waste, which further includes: a wall vibrator is provided on the outer wall surface of the conveyor body, the wall vibrators are arranged in parallel and symmetrically on the four surfaces of the conveyor body, and each group of wall vibrators is connected to the power supply of the conveyor body through a wire.

[0009] For example, at least one embodiment of the present invention provides an anti-clogging screw conveyor for conveying fly ash solid waste, which further includes: a first stabilizing block is fixedly connected to both ends of the inner wall of the conveyor body, the first stabilizing block is arranged in an "M" shape, and the two ends of the screw rod are respectively engaged with two sets of the first stabilizing blocks.

[0010] For example, at least one embodiment of this utility model provides an anti-clogging screw conveyor for conveying fly ash solid waste, which further includes: stabilizing grooves are provided at both ends of the screw rod, and a second stabilizing block is adhered to the inner wall of the first stabilizing block, with the stabilizing groove and the second stabilizing block being fitted together.

[0011] For example, at least one embodiment of this utility model provides an anti-clogging screw conveyor for conveying fly ash solid waste, which further includes: a sleeve block fixedly connected to the outer wall of the screw rod, a crushing blade fixedly connected to the outer wall of the sleeve block, an outer scraper fixedly connected to the outer wall of the crushing blade, two sets of sleeve blocks fixedly connected to the screw rod, the sleeve block being disposed between the feeding conveying screw blade and the middle conveying screw blade, and the other sleeve block being distributed between the middle conveying screw blade and the unloading conveying screw blade.

[0012] The working principle and beneficial effects of this utility model are as follows: the dense number of rings in the feeding section can quickly grab the material in the hopper to form a stable pushing flow, avoiding initial accumulation. As the conveyor advances, the decreasing number of rings reduces the frequency of material compression, and the increasing outer diameter gradually reduces the gap with the cylinder wall, which not only constrains the diffusion of materials but also enhances the feeding force, dynamically adapting to the material state to reduce agglomeration. The elastic scraper on the outer wall of the feeding conveyor spiral blades continuously adheres to the cylinder wall as the blades rotate, which can scrape off the adhering material in real time, preventing hardened clumps from falling off and clogging. The elasticity also prevents wear on the cylinder wall. The crushing blades of the two sets of sleeves on the spiral rod can impact and cut large particles of clumps. The outer scraper supplements the scraping of the adhering material in the gap between the blades, further eliminating the risk of clogging. All the structures work together to achieve continuous and stable conveying. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this utility model and these drawings without any creative effort.

[0014] Figure 1 This is a schematic diagram of the structure of the conveyor body in one embodiment of the present invention; Figure 2 for Figure 1 An enlarged view of the structure at point A in the embodiment; Figure 3 This is a schematic diagram of the structure of the sleeve block in one embodiment of the present invention; Figure 4 This is a partial planar structural diagram of the screw rod in one embodiment of the present invention.

[0015] In the diagram: 1. Conveyor body; 2. Feed bin; 3. Storage bin; 4. Screw; 5. First stabilizing block; 6. Feed conveying screw blade; 7. Middle section conveying screw blade; 8. Discharge conveying screw blade; 9. Elastic scraper; 10. Stabilizing trough; 11. Second stabilizing block; 12. Sleeve block; 13. Crushing blade; 14. Outer scraper; 15. Bin vibrator. Detailed Implementation The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit its scope.

[0016] To keep the drawings concise, only the parts relevant to the utility model are shown schematically in each drawing; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of the components with the same structure or function is schematically shown, or only one is labeled. In this document, "a" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0017] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0018] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0019] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0020] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0021] Refer to the instruction manual appendix Figure 1-4A clog-resistant screw conveyor for conveying fly ash solid waste includes: a conveyor body 1, a feed hopper 2 at one end of the conveyor body 1, a storage hopper 3 at the other end of the conveyor body 1, a screw rod 4 installed inside the conveyor body 1, a feeding conveying screw blade 6 welded and fixed to the outer wall surface of the screw rod 4 near the feed hopper 2, a discharging conveying screw blade 8 welded and fixed to the outer wall surface of the screw rod 4 near the storage hopper 3, and a middle conveying screw blade 7 welded and fixed to the outer wall surface of the screw rod 4, the middle conveying screw blade 7 being located in the middle part of the screw rod 4; the number of thread turns of the feeding conveying screw blade 6 on the screw rod 4 is greater than the number of thread turns of the middle conveying screw blade 7 on the screw rod 4, and the number of thread turns of the middle conveying screw blade 7 on the screw rod 4 is greater than the number of thread turns of the discharging conveying screw blade 8 on the screw rod 4; the feeding... The size of the conveying spiral blade 6 is smaller than that of the middle conveying spiral blade 7; the size of the middle conveying spiral blade 7 is smaller than that of the unloading conveying spiral blade 8; the unloading conveying spiral blade 8 is welded and fixed to the outer wall surface of the spiral rod 4 near the storage bin 3. The unloading conveying spiral blade 8 is also a sheet-like structure that continuously rotates around the outer wall of the spiral rod 4. Its rotation direction is consistent with that of the feeding conveying spiral blade 6. It is used to push the fly ash in the middle of the conveyor body 1 toward the storage bin 3; the middle conveying spiral blade 7 is welded and fixed to the outer wall surface of the spiral rod 4 between the feeding conveying spiral blade 6 and the unloading conveying spiral blade 8. The rotation direction of the middle conveying spiral blade 7 is consistent with that of the feeding conveying spiral blade 6 and the unloading conveying spiral blade 8. It is used to receive the fly ash pushed by the feeding conveying spiral blade 6 and transfer it to the unloading conveying spiral blade 8.

[0022] The number of thread turns on the screw rod 4 of the feeding conveying spiral blade 6 is greater than the number of thread turns on the screw rod 4 of the intermediate conveying spiral blade 7, and the number of thread turns on the screw rod 4 of the intermediate conveying spiral blade 7 is greater than the number of thread turns on the screw rod 4 of the unloading conveying spiral blade 8. By setting the number of thread turns in a decreasing manner, the fly ash is quickly grabbed and formed into a stable pushing flow through dense blade contact in the initial stage of conveying, avoiding accumulation below the feed hopper 2. As the conveying process progresses, the frequency of contact between the blades and the fly ash is reduced, reducing the probability of the fly ash being continuously squeezed and agglomerated.

[0023] The feed conveyor spiral blade 6 has a smaller outer diameter than the intermediate conveyor spiral blade 7, which in turn has a smaller outer diameter than the discharge conveyor spiral blade 8. Specifically, the outer diameter of the spiral blades is smaller. The feed conveyor spiral blade 6 has the smallest outer diameter, with a gap between its edge and the inner wall of the conveyor body 1 to prevent clumping caused by direct pressure from the blades on the material adhering to the inner wall when fly ash first enters. The intermediate conveyor spiral blade 7 has a moderate outer diameter, with a smaller gap between its edge and the inner wall of the conveyor body 1 than the gap between the feed conveyor spiral blade 6 and the inner wall, providing initial constraint on fly ash near the inner wall and reducing diffusion and accumulation. The discharge conveyor spiral blade 8 has the largest outer diameter, with the smallest gap between its edge and the inner wall of the conveyor body 1, enhancing the pushing force on the fly ash and ensuring concentrated movement of the material towards the storage silo 3. Through the coordinated design of the number of thread turns and the blade size, the conveyor body 1 can dynamically adapt to changes in the state of the fly ash during transport, reducing the risk of blockage.

[0024] Next, an elastic scraper 9 is fixedly connected to the outer wall of the feeding conveyor spiral blade 8. The elastic scraper 9 is in contact with the inner wall of the conveyor body 1. The edge of the elastic scraper 9 away from the feeding conveyor spiral blade 8 is in contact with the inner wall of the conveyor body 1, and the contact surfaces maintain continuous contact. When the spiral rod 4 drives the feeding conveyor spiral blade 8 to rotate, the elastic scraper 9 rotates synchronously with the blade. In the relative movement between its edge and the inner wall of the conveyor body 1, it can scrape off the fly ash adhering to the inner wall surface, preventing the material from forming hardened lumps due to long-term adhesion, and thus preventing blockage of the conveying channel when the lumps fall off. The elastic characteristics of the elastic scraper 9 ensure that it always remains in contact with the inner wall during the scraping process, while avoiding rigid wear on the inner wall.

[0025] At this time, wall vibrators 15 are installed on the outer wall surface of the conveyor body 1. The wall vibrators 15 are arranged symmetrically on the four surfaces of the conveyor body 1, and each set of wall vibrators 15 is connected to the power supply of the conveyor body 1 through wires. When the conveyor body 1 is started, the power control system synchronously starts the four sets of wall vibrators 15, so that the wall vibrators 15 generate high-frequency vibration and transmit it to the cylinder wall of the conveyor body 1. Through the vibration of the cylinder wall, the adhesion between the fly ash and the cylinder wall can be broken, so that the material that may have been attached can be detached from the inner wall due to vibration and re-enter the conveying flow. At the same time, the vibration can interfere with the tendency of the fly ash to form a stable bridging structure in the cylinder. When the material tends to bridge due to the friction between particles, the vibration can break up the force between the particles and ensure that the material continues to move in the downward direction.

[0026] Next, first stabilizing blocks 5 are fixedly connected to both ends of the inner wall of the conveyor body 1. The first stabilizing blocks 5 are arranged in an "M" shape, and the two ends of the screw rod 4 are respectively engaged with the two sets of first stabilizing blocks 5. The two ends of the screw rod 4 are respectively engaged in the arc-shaped grooves of the two sets of first stabilizing blocks 5, and a rotation gap is left between the screw rod 4 and the inner wall of the groove. The "M"-shaped structure of the first stabilizing blocks 5 can disperse the radial force generated when the screw rod 4 rotates through the two support legs, avoiding radial displacement of the screw rod 4 due to its own weight or the reaction force of the material pushing, ensuring that the screw rod 4 maintains axial stability during rotation, and reducing the material accumulation problem caused by the sudden increase or decrease of the gap between the blade and the inner wall.

[0027] Secondly, stabilizing grooves 10 are provided at both ends of the screw rod 4, and a second stabilizing block 11 is adhered to the inner wall of the first stabilizing block 5. The stabilizing grooves 10 and the second stabilizing block 11 are fitted together. When the screw rod 4 rotates, the second stabilizing block 11 and the stabilizing groove 10 form a sliding contact. The rubber material of the second stabilizing block 11 can absorb the slight axial vibration generated when the screw rod 4 rotates, reduce the rigid collision between the screw rod 4 and the first stabilizing block 5, and further limit the radial displacement of the screw rod 4 through the fitted contact, enhance the overall rotational stability, and avoid the relative position of the blade and the inner wall changing due to vibration, which would affect the conveying effect.

[0028] Finally, a sleeve block 12 is fixedly connected to the outer wall of the screw rod 4, and a crushing blade 13 is fixedly connected to the outer wall of the sleeve block 12. An outer scraper 14 is fixedly connected to the outer wall of the crushing blade 13. Two sets of sleeve blocks 12 are fixedly connected to the screw rod 4. One set of sleeve blocks 12 is located between the feeding conveying screw blade 6 and the middle section conveying screw blade 7, and the other set of sleeve blocks 12 is located between the middle section conveying screw blade 7 and the unloading conveying screw blade 8. When the screw rod 4 rotates, the sleeve block 12 drives the crushing blade 13 to rotate synchronously. The crushing blade 13 can impact and cut larger particles of fly ash or agglomerated materials that appear during the conveying process, crushing them into smaller particles and preventing large particles from getting stuck between the blades and the inner wall and causing blockage. When the outer scraper 14 rotates with the crushing blade 13, it can scrape off the material adhering to the inner wall at the location of the two sets of sleeve blocks 12, supplementing the scraping effect between the feeding section and the middle section, and between the middle section and the unloading section, further reducing the risk of blockage.

[0029] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A clog-resistant screw conveyor for conveying fly ash solid waste, characterized in that, include: The conveyor body (1) has a feed bin (2) at one end and a storage bin (3) at the other end. A screw rod (4) is installed inside the conveyor body (1). A feeding conveying screw blade (6) is welded and fixed to the outer wall surface of the screw rod (4) near the feed bin (2). A discharging conveying screw blade (8) is welded and fixed to the outer wall surface of the screw rod (4) near the storage bin (3). A middle section conveying screw blade (7) is welded and fixed to the outer wall surface of the screw rod (4). The middle section conveying screw blade (7) is located in the middle part of the screw rod (4).

2. The anti-clogging screw conveyor for conveying fly ash solid waste according to claim 1, characterized in that, The number of thread turns of the feed conveying spiral blade (6) on the spiral rod (4) is greater than the number of thread turns of the middle section conveying spiral blade (7) on the spiral rod (4), and the number of thread turns of the middle section conveying spiral blade (7) on the spiral rod (4) is greater than the number of thread turns of the unloading conveying spiral blade (8) on the spiral rod (4).

3. The anti-clogging screw conveyor for conveying fly ash solid waste according to claim 1, characterized in that, The size of the feed conveying spiral blade (6) is smaller than that of the middle section conveying spiral blade (7); the size of the middle section conveying spiral blade (7) is smaller than that of the unloading conveying spiral blade (8).

4. The anti-clogging screw conveyor for conveying fly ash solid waste according to claim 3, characterized in that, An elastic scraper (9) is fixedly connected to the outer wall of the feeding conveyor spiral blade (8), and the elastic scraper (9) is in contact with the inner wall of the conveyor body (1).

5. The anti-clogging screw conveyor for conveying fly ash solid waste according to claim 1, characterized in that, The outer wall surface of the conveyor body (1) is provided with a wall vibrator (15). The wall vibrators (15) are arranged in parallel and symmetrically on the four surfaces of the conveyor body (1). Each set of wall vibrators (15) is connected to the power supply of the conveyor body (1) through a wire.

6. The anti-clogging screw conveyor for conveying fly ash solid waste according to claim 1, characterized in that, The inner walls of the conveyor body (1) are fixedly connected to two first stabilizing blocks (5), which are arranged in an "M" shape. The two ends of the spiral rod (4) are respectively engaged with the two sets of first stabilizing blocks (5).

7. The anti-clogging screw conveyor for conveying fly ash solid waste according to claim 6, characterized in that, The spiral rod (4) has stabilizing grooves (10) at both ends, and a second stabilizing block (11) is glued to the inner wall of the first stabilizing block (5). The stabilizing grooves (10) and the second stabilizing block (11) are fitted together.

8. The anti-clogging screw conveyor for conveying fly ash solid waste according to claim 1, characterized in that, A sleeve block (12) is fixedly connected to the outer wall of the screw rod (4). A crushing blade (13) is fixedly connected to the outer wall of the sleeve block (12). An outer scraper (14) is fixedly connected to the outer wall of the crushing blade (13). Two sets of sleeve blocks (12) are fixedly connected to the screw rod (4). One sleeve block (12) is located between the feeding conveying screw blade (6) and the middle conveying screw blade (7). The other sleeve block (12) is distributed between the middle conveying screw blade (7) and the unloading conveying screw blade (8).

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