Automatic ash removal device of belt type drying conveyor

Abstract

The invention discloses an automatic ash removal device of a belt type drying conveyor, and relates to the technical field of conveying equipment. Comprising a conveyor, chain wheels are fixedly installed at the two ends of a driving shaft and a driven shaft of the conveyor respectively, chains are in meshing transmission between the chain wheels on the same side, chain plates are connected between chain links of the chains on the two sides respectively, an annular conveying chain plate structure is formed between the chain plates, and one or more chain plates are arranged to be of a turning plate structure. The turning plate structure comprises end plates located at the two ends, a turning plate is arranged between the end plates, the end plates and the turning plate are spliced to form a chain plate, the end, close to the conveying direction of the conveyor, of the turning plate is vertically and rotationally connected with the same side ends of the end plates, and the end, away from the conveying direction of the conveyor, of the turning plate is supported on supporting blocks fixedly arranged at the bottoms of the end plates. When the chain plate turns over along with the conveying track, manual intervention is not needed, the turning plate is automatically opened / closed in the conveying process of the conveyor, internal impurities are directionally discharged, the cleaning efficiency is improved, and the internal impurity cleaning period is shortened.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of conveying equipment, in particular to an automatic ash removal device of a belt type drying conveyor. BACKGROUND

[0002] The chain plate in the existing drying machine chain plate conveyor has defects that can be further optimized due to the fixed structure design (no active opening and closing function): 1) Internal impurities cannot be actively discharged: the chain plate is a closed rigid structure, and the internal accumulated dust and clumped materials (such as hardened particles after sludge drying) can only be manually discharged or brushed after disassembling the plate. Disassembling the plate requires stopping and disassembling the entire chain transmission system, which takes a long time for single cleaning and seriously affects the continuity of production.

[0003] 2) Accumulation of impurities causes chain failure: long-term accumulation of internal impurities can cause uneven weight of the chain plate, resulting in vibration and noise during operation, accelerating the wear of the chain shaft and chain pin (30-50% reduction in service life); if the impurities are corrosive materials (such as chemical waste), they can also cause hidden corrosion to the internal metal structure of the chain plate, increasing the risk of sudden breakage.

[0004] 3) Secondary pollution during ash removal: during manual disassembly and cleaning, the internal dust is easily dispersed into the drying machine cavity, polluting the already dried materials (such as powder materials in food processing), or adhering to the inner wall of the equipment to form a new source of dust accumulation, forming a vicious cycle of "cleaning - pollution - re-cleaning". SUMMARY

[0005] The purpose of the present application is to provide an automatic ash removal device for a belt type drying conveyor, which can effectively solve the problems in the background art.

[0006] The technical solution to achieve the above-mentioned purpose is: an automatic ash removal device for a belt type drying conveyor, including a conveyor, the conveyor including a driving shaft and a driven shaft, the two ends of the driving shaft and the driven shaft are fixedly installed with chain wheels, the chain wheels on the same side are meshed and driven by chains, and the chain links of the two chains are connected with chain plates, characterized in that: one or more chain plates are provided with a flap structure, the flap structure is in a closed state under the action of gravity when running to the upper conveying section of the conveyor, and is in an open state under the action of gravity when running to the lower conveying section of the conveyor.

[0007] Further, the chain plates are sequentially and movably connected to form a ring-shaped conveying chain plate structure, the flap structure includes end plates at two ends, a flap is arranged between the end plates, the end plates and the flap are spliced to form the chain plates, one end of the flap close to the conveying direction of the conveyor is rotatably connected to the same side of the end plate, the back surface of the end plate away from the conveying direction of the conveyor is fixed with a support block protruding inwardly from the end plate, when the flap runs to the upper conveying section of the conveyor, the end away from the conveying direction of the conveyor is supported on the support block under the action of gravity, and the flap rotates downward to an open state under the action of gravity when running to the lower conveying section of the conveyor.

[0008] Further, the two ends of the flap close to the conveying direction of the conveyor are respectively fixedly installed with rotating sleeves arranged along the width direction of the conveyor, the flap on the inner side of the rotating sleeve is provided with a square hole communicating with the rotating sleeve, and the two end plates are respectively fixedly installed with rotating shafts coaxially arranged with the rotating sleeves, the rotating shafts on the end plates are rotatably arranged in the rotating sleeves on the corresponding sides and respectively extend into the square holes, and one end of the rotating shaft extending into the square hole is threadedly connected with a limiting nut.

[0009] Further, the bottom of the flap is connected with a first reinforcing strip connected as a whole with the rotating sleeve, and the end of the flap away from the rotating end is connected with a second reinforcing strip at the bottom.

[0010] Further, the length of the flap is 2 / 3-4 / 5 of the width of the conveying surface of the conveyor.

[0011] The beneficial effects of the present application are as follows: 1) Automatic opening and closing of the ash: the chain plate is flipped along the conveying track without manual intervention, the flap is automatically opened / closed during the conveying process of the conveyor, the internal impurities are discharged in a directional manner, the cleaning efficiency is improved, and the internal impurity cleaning period is shortened.

[0012] 2) Online ash cleaning: the ash cleaning process is synchronized with the operation of the dryer (without stopping), which is suitable for continuous production scenes.

[0013] 3) Leakage prevention and wear resistance: the conveying surface is sealed in the closed state.

[0014] 4) Extension of equipment life: there is no accumulation of impurities in the chain plate, and the vibration noise is reduced.

[0015] 5) Avoiding secondary pollution: the impurities are collected through the dust collection groove arranged at the bottom of the dryer, and there is no dust diffusion.

[0016] 6) Enhanced adaptability: the hinge structure is compatible with chain plates made of different materials (metal and high polymer materials), and is suitable for sludge, chemical, food and other fields of drying, and is especially suitable for conveying of high-viscosity and easy-caking materials. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1is a front view of the present application; Figure 2 is Figure 1 is an enlarged view of part A in Figure 3 is Figure 2 is an enlarged view of part A in Figure 4 is Figure 2 is an enlarged view of part B in Figure 5 is Figure 1 is an enlarged view of part B in Figure 6 is Figure 5 is an enlarged view of part A in Figure 7 is Figure 5 is an enlarged view of part B in Figure 8 is Figure 1 is an enlarged view of part C in Figure 9 is Figure 8 is an enlarged view of part A in Figure 10 is Figure 8 is an enlarged view of part B in Figure 11 is Figure 1 is an enlarged view of part D in Figure 12 is Figure 11 is an enlarged view of part A in Figure 13 is Figure 11 is an enlarged view of part B in Figure 14 is a partial perspective view of the present application; Figure 15 is a top perspective view of the flap structure; Figure 16 is a bottom perspective view of the flap structure; Figure 17 is a partial schematic view of the flap structure; Figure 18 is a schematic view of the flap structure turned to the lower conveying section; Figure 19 is a schematic view of the flap structure turned upward to the turning position; Figure 20 is a partial schematic view of the second embodiment; Figure 21 is a partial perspective view of the second embodiment, wherein area A is a schematic view of the polyester mesh plate removed; Figure 22 is Figure 21 is an enlarged view of part B in Figure 23For the second embodiment, the local plan view, the area A is the state of the polyester screen plate is removed. DETAILED DESCRIPTION Embodiment 1

[0018] As Figures 1-17 shown, the present application includes conveyor 1, conveyor 1 includes driving shaft 2 and driven shaft 3, driving shaft 2 and driven shaft 3 are located in the same horizontal plane, both ends of driving shaft 2 and driven shaft 3 are fixedly installed with sprocket 4, the same side sprocket 4 is engaged with chain 6, the chain links of both sides of chain 6 are connected with chain plate 5 respectively, one or more of chain plate 5 is provided as a flap structure, one of chain plate 5 is provided as flap structure 7 in this embodiment, flap structure 7 includes end plate 8 located at both ends, end plate 8 is provided with flap 9 between them, end plate 8 and flap 9 are spliced into complete chain plate 5, the end of flap 9 close to the conveying direction of conveyor 1 is connected with the same side end of end plate 8 up and down, the back of end plate 8 away from the conveying direction of conveyor 1 is fixed with support block 10 which protrudes inward from end plate 8, when flap 9 runs to the upper conveying section of conveyor 1, the end away from the conveying direction of conveyor 1 is supported on support block 10 under the action of gravity, when flap 9 runs to the lower conveying section of conveyor 1, it rotates downward to the open state under the action of gravity.

[0019] Further, the length of flap 9 is 2 / 3-4 / 5 of the width of the conveying surface of conveyor 1 (the length direction of flap 9 is consistent with the width direction of conveyor 1, and the width direction of flap 9 is consistent with the conveying direction of conveyor 1).

[0020] The rotating structure of the flap is as follows: the two ends of flap 9 close to the conveying direction of conveyor 1 are respectively fixedly installed with rotating sleeve 11 arranged along the width direction of conveyor 1, the outer end of rotating sleeve 11 is flush with the end face of the same side end of flap 9, square hole 12 communicating with rotating sleeve is provided on the inner side of flap 9, rotating shaft 13 coaxially arranged with rotating sleeve 11 is fixedly installed on both end plate 8, rotating shaft 13 on end plate 8 is respectively rotatably fitted in corresponding side rotating sleeve 11 and respectively extends into corresponding side square hole 12, one end of rotating shaft 13 extending into square hole is threadedly connected with limiting nut 14.

[0021] As a further improvement of this embodiment, in order to improve the overall strength of flap 9, first reinforcing strip 15 connected as a whole with rotating sleeve 11 is connected to the bottom of flap 9, second reinforcing strip 16 is connected to the bottom of the end of flap 9 away from the rotating end.

[0022] As Figure 18 , 19 As shown, during the clockwise rotation conveying process of conveyor 1, when it rotates to the upper conveying section, flap 9 is in Figure 3The closing state shown, the chain plate 5 of the flap structure runs from the upper conveying section to the lower conveying section, and the flap 9 is turned over to Figure 18 The downward opening state shown, and the impurities falling into the inside of the conveyor 1 will be concentrated to the left end turning position under the conveying of the conveyor 1, and the flap structure 7 will be turned over to Figure 18 The state shown to Figure 19 During the turning state shown, the impurities concentrated to the left end turning position will be automatically discharged from the conveyor 1 by the opening of the flap structure 7, realizing automatic dust removal.

[0023] The flap structure is turned to Figure 19 The state shown, the flap 5 will gradually close under the action of gravity with the rotation of the chain plate conveyor 1. Embodiment 2

[0024] As Figures 21-23 shown, the conveyor in this embodiment is used for conveying materials in a biomass drying device (such as a belt type sludge dryer with active ventilation function disclosed in publication No. CN114735912A), and the chain plate 5 needs to have good ventilation function to facilitate hot air passing through and drying the materials. Therefore, in this embodiment, the chain plate 5 is made of carbon steel, and the thickness of the chain plate 5 is controlled to be 2-3 mm to ensure that the weight of the chain plate 5 is light (without increasing the transmission load of the equipment) and meet the bearing strength requirements.

[0025] As Figure 7 shown, the chain plate 5 is provided with air holes 5.1, and the chain plate 5 is provided with air holes 5.1, which is a conventional technology mainly used in occasions requiring ventilation. The chain plate 5 is fixedly laid with a polyester mesh belt 6 covering all the air holes 5.1. Embodiment 3

[0026] As Figures 20-23 shown, the chain plate 5 not provided with a flap structure includes a chain plate body 5.4, one side of the chain plate body 5.4 in the width direction (i.e. the conveying direction of the conveyor) is provided with a first bending section 5.5 bent inward by 90°, the other side of the chain plate body 5.1 in the width direction is provided with a first support side edge 5.6 extending away from the first bending section 5.5, the width of the first support side edge 5.6 is 1 / 20-1 / 10 of the width of the chain plate body 5.1, the first support side edge 5.6 protrudes from the conveying surface of the chain plate body 5.4 and is parallel to the chain plate body 5.1, the chain plate body 5.4, the first bending section 5.5 and the first support side edge 5.6 are an integral structure, and the lower end of the first bending section 5.5 is further provided with a first folding edge 5.7 bent away from the first support side edge 5.6, and the folding angle of the first folding edge 5.7 relative to the first bending section 5.5 is 30°-60°. The first bending section 5.5 and the first folding edge 5.7 can improve the anti-deformation and anti-bending ability of the chain plate.

[0027] The chain plate 5 arranged as a flap structure is provided with a second bending section 23 bent 90° inward on one side of the end plate 8 and the flap 9, and is further provided with a second supporting side edge 25 extending away from the side of the second bending section 23 on the other side of the end plate 8, the width a of the second supporting side edge 25 is 1 / 20-1 / 10 of the width of the chain plate body 5.1, the second supporting side edge 25 is parallel to the end plate 8 and protrudes from the conveying surface of the end plate 8, and the second bending section 23 on the end plate 8 is correspondingly provided with a second folding edge 24 bent away from the second supporting side edge 25, and the folding angle of the second folding edge 24 relative to the second bending section 23 is 30-60°.

[0028] The chain plates 5 are arranged in the same direction (i.e. the end of the chain plate 5 arranged as a flap structure is provided with a second bending section, and the end of the chain plate 5 not arranged as a flap structure is provided with a first bending end, and the ends of the chain plates 5 are arranged in the same direction), and the chain plates 5 are connected end to end, wherein the chain plate 5 arranged as a flap structure is movably connected to the adjacent chain plate 5 through the second supporting side edge 25, and the chain plate 5 not arranged as a flap structure is movably connected to the adjacent chain plate 5 through the first supporting side edge 5.6, forming a ring-shaped conveying chain plate structure, and the gap between the flap 9 and the adjacent two chain plates 5 is less than 0.5 cm.

[0029] The chain plate body 5.4 is fixedly laid with a polyester mesh belt 17 covering all the ventilation holes 5.1, the two side edges of the polyester mesh belt 6 in the width direction are pressed and mounted on the corresponding chain plate body 5 through a pressing strip 18, and are fixedly connected through rivets, the head of the rivet is flat, so as to avoid hooking materials or scratching equipment, the pressing strip 7 is made of stainless steel, the width of the pressing strip 7 is 1 / 20-1 / 10 of the width of the chain plate body 5.4, and the pressing strip 18 is used to constrain the edge of the polyester mesh belt 6 on one hand, and to avoid the deviation of the polyester mesh belt 6 on the other hand.

[0030] The chain plate 5 arranged as a flap structure can be arranged as a solid plate, or can be provided with ventilation holes 5.1, when arranged as a solid plate, the polyester mesh belt 17 can not be laid, when provided with ventilation holes 5.1, the polyester mesh belt 17 needs to be laid, the ventilation holes 5.1 on the chain plate 5 arranged as a flap structure are arranged at the same position as the ventilation holes 5.1 on the chain plate not arranged as a flap structure, the end plate 8 and the flap 9 are independently laid with the polyester mesh belt 17, and the two side edges of the polyester mesh belt 17 in the width direction of the chain plate 5 are independently fixedly pressed and mounted through the pressing strip 18, so that the flap 9 can be turned on and off.

[0031] The inner middle part of the chain link of the chain 6 is fixed with a horizontally arranged connecting piece 19, and the chain plate 5 is fixed on the connecting piece 19 on the corresponding side through a bolt at both ends, wherein the chain plate 5 arranged in a flap structure is fixed through the end plate 8 at both ends and the connecting piece 19, and the chain plate 5 is respectively connected with a vertically upward baffle 20 (the baffle 20 corresponding to the chain plate 5 arranged in a flap structure is installed on the end plate 8), and the baffle 20 is used for forming a barrier to the material conveyed on the chain plate 5, and the vertical surfaces at the end portions of adjacent baffles 20 are fitted and movably matched, so that the baffles 20 can be relatively rotated when the baffles 20 are rotated to an angle position.

[0032] The polyester mesh belt 6 is used as a surface layer material conveying component, and if a local damage occurs, the rivet and the pressing strip 18 can be individually replaced without discarding the chain plate 5, so that the cost of consumables is reduced; meanwhile, the air permeability (without affecting the penetration of hot air) and the surface smoothness (without sticking material) of the polyester mesh belt 17 can be retained.

[0033] As a further description of the embodiment, the chain plate 5 and the pressing strip 18 are subjected to galvanizing or plastic spraying treatment on the surface, so as to avoid rusting during the drying process (such as the material containing a small amount of acid and alkali), and prolong the service life of the chain plate 18.

[0034] The chain plate of carbon steel is used as a framework and is tightly fixed with the polyester mesh belt through a rivet, a synergistic structure of “framework stress + mesh belt material conveying” is formed, and the tensile deformation of the polyester mesh belt can be effectively limited. The tensile strength of the polyester mesh belt is increased by more than 3 times, the breaking strength is large, the material can be stably carried, the elongation rate of the mesh belt is controlled to be ≤1%, the tensioning device does not need to be frequently adjusted, and the operation and maintenance intervention is reduced.

[0035] The carbon steel / stainless steel pressing strip, the framework and the polyester mesh belt are fixed through the rivet, the edge tear resistance is strengthened (increased by 2-3 times compared with the pure polyester mesh belt), and the edge flatness is ensured, so as to avoid the edge curling when the equipment starts and stops or the material deviates. During the transmission process, the deviation amount of the polyester mesh belt can be controlled to be ≤±3mm, the manual real-time monitoring and adjustment are not needed, and the risk of device scratching caused by deviation is reduced.

Claims

1. A belt dryer conveyor automatic ash cleaning device, comprising a conveyor, the conveyor comprising a driving shaft and a driven shaft, chain wheels being fixedly installed at both ends of the driving shaft and the driven shaft respectively, chains being in meshing transmission between the chain wheels on the same side, and chain plates being connected between chain links of the chains on both sides, characterized in that: One or more of the chain plates is provided with a flap structure, which is in a closed state under the action of gravity when running to the upper conveying section of the conveyor, and is in an open state under the action of gravity when running to the lower conveying section of the conveyor.

2. The automatic ash removal device of the belt drying conveyor according to claim 1, characterized in that: The chain plates are sequentially and movably overlapped to form a ring-shaped conveying chain plate structure, the flap structure includes end plates at two ends, and a flap is arranged between the end plates, the end plates and the flap are spliced to form chain plates, one end of the flap close to the conveying direction of the conveyor is connected to the same side of the end plate in an up-down rotating manner, the back surface of the end plate away from the conveying direction of the conveyor is fixed with a support block protruding inward from the end plate, when the flap runs to the upper conveying section of the conveyor, the end away from the conveying direction of the conveyor is supported on the support block under the action of gravity, and when the flap runs to the lower conveying section of the conveyor, the flap rotates downward around the rotating end to the open state under the action of gravity.

3. The automatic ash cleaning device of a belt dryer conveyor according to claim 1, characterized in that: The two ends of the flap close to the conveying direction of the conveyor are respectively fixed with rotating sleeves arranged along the width direction of the conveyor, the flap on the inner side of the rotating sleeve is provided with a square hole communicating with the rotating sleeve, the two end plates are respectively fixed with rotating shafts coaxially arranged with the rotating sleeves, the rotating shafts on the end plates are respectively rotatably arranged in the rotating sleeves on the corresponding side and respectively extend into the square holes, and one end of the rotating shaft extending into the square hole is threadedly connected with a limiting nut.

4. The automatic ash cleaning device of a belt dryer conveyor according to claim 3, characterized in that: The bottom of the flap is connected with a first reinforcing strip connected as a whole with the rotating sleeve, and the end of the flap away from the rotating end is connected with a second reinforcing strip at the bottom.

5. The automatic ash cleaning device of a belt dryer conveyor according to claim 1, characterized in that: The length of the flap is 2 / 3-4 / 5 of the width of the conveying surface of the conveyor.

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