CN114314062A

CN114314062A - Vertical lifting structure with clamping belt

Info

Publication number: CN114314062A
Application number: CN202111664443.7A
Authority: CN
Inventors: 晏丽; 李永祥; 王明旭; 张超; 何颖臻; 赵子炎; 孙延新; 符记; 高偌霖; 陈晓玉; 曹宪周
Original assignee: Henan University of Technology
Current assignee: Henan University of Technology
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2022-04-12

Abstract

The invention relates to the technical field of unloading and conveying, in particular to a vertical lifting structure with a belt, wherein a bearing conveying belt and a covering conveying belt are parallel, a material conveying space is formed between the bearing conveying belt and the covering conveying belt, and the material conveying space is wrapped by an air chamber; the air chamber is formed by two curved shape chambeies concatenations, and curved shape chamber includes: the inner cambered shell and the outer curved shell are connected in a sealing way, and an air cavity is formed between the inner cambered shell and the outer curved shell; a plurality of air outlet holes are formed on the inner cambered surface shell, and air in the air supply cavity applies air pressure to the bearing conveying belt and the covering conveying belt; the two curved cavities are oppositely arranged, the two inner cambered shells are buckled with each other to clamp the bearing conveyer belt and the covering conveyer belt, and the belt edges of the bearing conveyer belt and the covering conveyer belt are connected with the edge parts of the two curved cavities through edge sealing devices. The invention improves the sealing performance, solves the air leakage problem, absorbs the linear expansion amount generated by temperature difference, eliminates the phenomena of air type distortion and arching generated by large environmental temperature difference and improves the material conveying efficiency.

Description

Vertical lifting structure with clamping belt

Technical Field

The invention relates to a material ship unloading and conveying technology, in particular to an entrainment vertical lifting structure.

Background

In recent years, with the expansion of port scale, continuous ship unloaders are greatly developed in port bulk cargo ship unloading, and mainly present two conveying forms, one is a large and efficient continuous ship unloader, the main machine types of the continuous ship unloader are a chain bucket, a bucket wheel and a spiral type, and the main operation form is to load and unload heavy bulk cargos with poor flowability, such as ores and coal, on a large bulk cargo port. The other is a small, mobile and multipurpose continuous ship unloader which mainly comprises a pneumatic type, a clamping type and the like, and the main operation mode is to load and unload fertilizer, grain, feed and other light bulk cargo with better mobility. Particularly, the belt-clamping ship unloader is a double-belt conveying system, the double-belt conveying system feeds materials from the tail part, the materials are conveyed between the double belts through the impellers, the materials can be lifted to the guide chute at a constant speed through the pressure of the air chambers on the double belts, and then the materials are conveyed to the horizontal conveying part through the guide chute, so that the lifting work of the materials is completed, and the belt-clamping ship unloader has the characteristics of low energy consumption, low breakage rate, good continuity and the like.

However, the current air chamber has large air flow resistance loss, low air utilization rate, large fan power consumption, poor air pressure uniformity along the longitudinal direction of the air chamber and difficult achievement of larger conveying capacity.

Disclosure of Invention

Technical problem to be solved

The invention provides an entrainment vertical lifting structure to solve the problem of poor conveying capacity.

(II) technical scheme

In order to solve the above technical problem, the present invention provides an entrainment vertical lifting structure, which includes: the material conveying device comprises a bearing conveying belt, a covering conveying belt and an air chamber, wherein the bearing conveying belt and the covering conveying belt are parallel, a material conveying space is formed between the bearing conveying belt and the covering conveying belt, the material conveying space is wrapped by the air chamber, and the air chamber penetrates from the lower part to the upper part of the entrainment vertical lifting structure;

the air chamber is formed by two curved chambeies concatenation, curved chamber includes: the inner cambered shell and the outer zigzag shell are connected in a sealing manner, and an air cavity is formed between the inner cambered shell and the outer zigzag shell; a plurality of air outlet holes are formed in the inner cambered surface shell, and air in the air cavity applies air pressure to the bearing conveying belt and the covering conveying belt;

the two curved cavities are oppositely arranged, the two inner cambered shells are buckled with each other to clamp the bearing conveyer belt and the covering conveyer belt, and the belt edges of the bearing conveyer belt and the covering conveyer belt are connected with the edge parts of the two curved cavities through edge sealing devices.

In some embodiments, preferably, the middle section of the outer zigzag shell is an arc-shaped surface, and the two ends of the outer zigzag shell are bent surfaces, and the bent surfaces are close to the inner zigzag shell from the connection part of the inner zigzag shell and form a plurality of bends.

In some embodiments, preferably, the curved cavity has a symmetrical structure.

In some embodiments, preferably, the plenum is fixedly connected to the truss carrying the vertical lifting structure by plenum support brackets.

In some embodiments, preferably, the outlet holes are proportionally enlarged from the central area hole to the edge, and all the outlet holes are distributed on the inner cambered shell in a manner that: the equal line spacing, the equal column spacing and the equal difference diameter are arranged from the middle.

In some embodiments, it is preferable that a bent air deflector is disposed in the air chamber and extends from the central region to the upper and lower ends.

In some embodiments, preferably, the bearing conveyer belt is provided with a buffer pressure regulating idler unit at a convex arc section which changes vertically and horizontally.

In some embodiments, preferably, the buffer pressure regulating idler unit includes: the supporting roller device comprises an integral supporting piece, a buffering supporting plate, an elastic buffering piece, a pneumatic cylinder and a plurality of supporting rollers which are arranged in parallel, wherein the buffering supporting plate is installed on the integral supporting piece through the elastic buffering piece, the non-adjacent ends of the supporting rollers at the end parts are installed on the buffering supporting plate through end part supporting roller brackets, the connecting ends of the two adjacent supporting rollers are respectively connected to a middle area supporting roller bracket, and the middle area supporting roller bracket is supported through the pneumatic cylinder.

In some embodiments, preferably, the edge sealing device includes a housing, the housing has an opening for the carrier belt and the cover belt to be inserted into, a first belt pressing roller for bearing the carrier belt is disposed in the housing, a second belt pressing roller for bearing the cover belt is further disposed in the housing, and the first belt pressing roller and the second belt pressing roller are both connected to an inner wall of the housing through a compression spring; and a sealing reed is arranged at the opening of the shell.

In some embodiments, preferably, a material inlet is arranged at the lower part of the material conveying space between the bearing conveyor belt and the covering conveyor belt to receive the material conveyed by the feeding structure; and/or, the entrainment vertical lifting structure further comprises: the truss is longitudinally supported.

(III) advantageous effects

The invention provides an entrainment vertical lifting structure comprising: the device comprises a bearing conveyer belt, a covering conveyer belt and an air chamber, wherein the bearing conveyer belt and the covering conveyer belt are parallel, a material conveying space is formed between the bearing conveyer belt and the covering conveyer belt, the material conveying space is wrapped by the air chamber, and the air chamber penetrates from the lower part to the upper part of a belt-clamping vertical lifting structure; the air chamber is formed by two curved shape chambeies concatenations, and curved shape chamber includes: the inner cambered shell and the outer curved shell are connected in a sealing way, and an air cavity is formed between the inner cambered shell and the outer curved shell; a plurality of air outlet holes are formed on the inner cambered surface shell, and air in the air supply cavity applies air pressure to the bearing conveying belt and the covering conveying belt; the two curved cavities are oppositely arranged, the two inner cambered shells are buckled with each other to clamp the bearing conveyer belt and the covering conveyer belt, and the belt edges of the bearing conveyer belt and the covering conveyer belt are connected with the edge parts of the two curved cavities through edge sealing devices. The air chamber is through the structural design of interior cambered surface shell and outer inflection book shell, and the cross sectional shape of air chamber is the air chamber that biarc and broken line combined together, and the junction seals through sealed glue, improves sealing performance, has solved the gas leakage problem of air chamber concatenation department, can also absorb the linear flexible volume that produces because of the difference in temperature, eliminates the big produced gas formula distortion of environmental temperature difference and arching phenomenon, improves material and carries the efficiency.

Drawings

FIG. 1a is a general schematic view of an embodiment of the invention with a vertical lifting structure entrained therein;

FIG. 1b is a schematic view of an entrainment vertical lift structure in an embodiment of the present invention;

FIG. 1c is a sectional view taken along line A-A of FIG. 1 b;

FIG. 1d is an enlarged schematic view of FIG. 1c at B;

FIG. 1e is a schematic illustration of a load bearing conveyor and a cover conveyor during transport of material in the conveyor;

FIG. 2 is a schematic diagram of a curved cavity in one embodiment of the invention;

FIG. 3 is a schematic view of the interior of a curved cavity in accordance with an embodiment of the present invention;

FIG. 4 is a schematic view of the arrangement of the air outlet holes of the inner cambered surface shell in one embodiment of the invention;

fig. 5 is a schematic structural view of a buffering and pressure-regulating idler unit according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a sealing device according to an embodiment of the present invention.

Note: 1 covering conveyer belt, 2 bearing conveyer belt, 3 air chambers, 4 impellers, 5 edge sealing devices, 6 guide chutes, 7 feeding structures, 8 trusses, 9 buffering pressure regulating roller units, 11 covering conveyer belt tensioning rollers, 12 covering conveyer belt driving rollers, 13 covering conveyer belt driven rollers, 21 bearing conveyer belt driving rollers, 22 bearing conveyer belt tensioning rollers, 23 bearing conveyer belt driven rollers, 31 inner cambered shell, 32 outer zigzag shell, 33 air outlet holes, 34 air deflector, 35 air chamber support frame, 91 buffering supporting plate, 92 buffering spring, 93 pneumatic cylinder, 931 air chamber of air cylinder, 932 air pipe, 933 push rod, 934 sealing ring, 94 integral support, 95 oblique roller, 96 end roller support frame, 97 horizontal roller, 98 middle area roller support frame, 51 first pressure belt, 52 compression spring, 53 edge sealing shell, 54 edge sealing reed, 55 end spring pressing sheet.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

To address the problem of transport capacity, the present invention provides an entrainment vertical lift structure.

The invention provides an entrainment vertical lifting structure which is used for a ship unloader, receives materials fed by a feeding structure, carries out material entrainment in the vertical (vertical) direction and pneumatic conveying, sends the materials into a horizontal conveying structure and finally enters a target warehouse.

The entrainment vertical lift structure comprises: the device comprises a bearing conveyer belt, a covering conveyer belt and an air chamber, wherein the bearing conveyer belt and the covering conveyer belt are parallel, a material conveying space is formed between the bearing conveyer belt and the covering conveyer belt, the material conveying space is wrapped by the air chamber, and the air chamber penetrates from the lower part to the upper part of a belt-clamping vertical lifting structure; the air chamber is formed by two curved shape chambeies concatenations, and curved shape chamber includes: the inner cambered shell and the outer curved shell are connected in a sealing way, and an air cavity is formed between the inner cambered shell and the outer curved shell; a plurality of air outlet holes are formed on the inner cambered surface shell, and air in the air supply cavity applies air pressure to the bearing conveying belt and the covering conveying belt; the two curved cavities are oppositely arranged, the two inner cambered shells are buckled with each other to clamp the bearing conveyer belt and the covering conveyer belt, and the belt edges of the bearing conveyer belt and the covering conveyer belt are connected with the edge parts of the two curved cavities through edge sealing devices. The air chamber is through the structural design of interior cambered surface shell and outer inflection book shell, and the cross sectional shape of air chamber is the air chamber that biarc and broken line combined together, and the junction seals through sealed glue, improves sealing performance, has solved the gas leakage problem of air chamber concatenation department, can also absorb the linear flexible volume that produces because of the difference in temperature, eliminates the big produced gas formula distortion of environmental temperature difference and arching phenomenon, improves material and carries the efficiency.

The vertical lifting structure with the clamping belt is a double-belt conveying system, as shown in fig. 1a and fig. 1b, the double belts are a bearing conveying belt 2 and a covering conveying belt 1, the bearing conveying belt 2 and the covering conveying belt 1 respectively rotate circularly through a driving wheel and a tensioning wheel, the two belts are parallel to form a material conveying space, the material conveying space is conveyed into a material guide chute 6, the material conveying space is wrapped by an air chamber 3, the air chamber 3 conveys air to the bearing conveying belt 2 and the covering conveying belt 1, bearing air pressure is applied to the air chamber 3, and the air chamber 3 penetrates through the upper part from the lower part of the vertical lifting structure with the clamping belt.

The bearing conveyer belt 2 and the covering conveyer belt 1 are conveyer belts with cotton fabric core layers, polyester fabric core layers, nylon core layers, steel wire core layers and the like as core layers, and joints of the fabric core layer conveyer belt can adopt cold bonding or vulcanization joints without adopting mechanical joints. The carrier web 2 is wound on the carrier web drive roller 21, the carrier web tensioning roller 22, the carrier web driven roller 23, and the cover web 1 is wound on the cover web drive roller 12, the cover web tensioning roller 11, the cover web driven roller 13. The driving roller is a roller for transmitting traction force to the conveying belt through friction action, and is a main part for transmitting power. The driving roller has exposed smooth steel surface, herringbone and diamond pattern rubber covering surface, and may be used in low power, small bandwidth and dry environment. The friction coefficient of the rubber covering surface with herringbone and rhombus patterns is large, and the rubber covering surface has good skid resistance and drainage.

The clamping belt type tensioning device of the ship unloader generates pretension of the conveying belt, ensures that enough friction force is generated between the conveying belt and the driving roller, further ensures that the conveying belt does not slip in the conveying process, and simultaneously limits the sag of the conveying belt among the groups of carrier rollers, thereby ensuring the normal operation of a double-belt conveying system of a lifting section of the ship unloader.

The common tension device of the belt conveyor mainly comprises a screw type and a weight type.

The spiral type tensioning device adjusts the pretension of the conveying belt by using a spiral mechanism. The belt conveyor is suitable for belt conveyors with short conveying lengths and low power. However, the spiral tensioning device cannot automatically adjust the tension of the conveying belt, and the conveying belt is elastic and loosens after being used for a period of time, so that the conveying belt needs to be regularly checked and continuously adjusted. Therefore, the overall requirements cannot be well met by selecting the spiral tensioning device.

The heavy hammer tensioning is a tensioning mode for adjusting the pre-tension of the conveying belt by means of a balance weight, and mainly comprises two modes of a vertical frame heavy hammer tensioning device and a horizontal vehicle type heavy hammer tensioning device. The vertical frame heavy hammer tensioning device is a tensioning mode that a tensioning roller is installed in a frame capable of moving along a vertical rail, the tensioning device can be arranged by utilizing the space position of a conveyor line, meanwhile, the elongation of a conveyor belt can be automatically compensated by depending on gravity along with the change of the tension, and a heavy hammer box is filled with 15kg of cast iron blocks to adjust the tension. The horizontal vehicle type heavy hammer tensioning device is a tensioning device with a tensioning roller arranged on a trolley capable of moving along a horizontal rail. It is suitable for long-distance belt conveyer with great power. However, the weight tensioning device needs a counter weight to apply external force to the tensioning device, so that the weight of the lifting section is increased, and the weight tensioning device is not in accordance with the lightness of the lifting section.

Therefore, the invention innovatively adopts a hydraulic tensioning device which is one of automatic control type tensioning devices and works in a mode of combining a hydraulic cylinder and a movable frame, so that the tensioning force is automatically adjusted according to the traction force of a tensioning roller, the elongation of a conveying belt can be compensated, and the operation is convenient when the conveying belt of the belt conveyor is adjusted.

The air chamber 3 is formed by splicing two curved cavities, as shown in fig. 1c, 1d, 2 and 3, wherein the curved cavities comprise: the inner cambered shell 31 and the outer curved shell 32 are connected in a sealing mode, an air cavity is formed between the inner cambered shell 31 and the outer curved shell 32, and the inner cambered shell and the outer curved shell can be welded, so that the air tightness of the air cavity is improved, air leakage is avoided, and the conveying efficiency of air is improved; a plurality of air outlet holes 33 are formed on the inner cambered surface shell 31, and air in the air supply cavity applies air pressure to the bearing conveying belt 2 and the covering conveying belt 1; the two curved cavities are oppositely arranged, the two inner arc surface shells 31 are buckled with each other to clamp the bearing conveyer belt 2 and the covering conveyer belt 1, and the belt edges of the bearing conveyer belt 2 and the covering conveyer belt 1 are connected with the edge parts of the two curved cavities through the edge sealing device 5.

The gas chamber 3 has a larger bandwidth and a larger transmission force than a box-shaped (e.g., a box-shaped square).

Compared with the double-curve air chamber 3 with two arc-shaped shells enclosing a city, the air chamber 3 has the advantages that due to the design of the outer bending shell, the air flow vortex in the air chamber 3 is reduced, the on-way resistance is reduced, the utilization rate of air is improved, the power consumption of a fan is reduced, the strength, the rigidity and the anti-torsion turning performance of the air chamber 3 are improved, the air chambers 3 are connected in a multi-section mode in the longitudinal direction, the uniformity of air pressure is improved, and the conveying capacity is improved. And, from bottom to top, divide into the multistage and connect, overall structure comprises back closed air chamber, preceding closed air chamber and middle air chamber, and every solar term room drive length is 3m, and 3 connection structure of air chamber adopts the connection that special-shaped outer flange and straight formula picture peg made up mutually, uses novel silicon rubber sealant to seal again in the junction to this has not only improved sealing performance, has solved the gas leakage problem of 3 concatenation departments of air chamber to a certain extent, and can also absorb the linear flexible volume that produces because of the difference in temperature, has eliminated the big gas formula distortion and the arching phenomenon that produces of environmental temperature difference.

Referring to fig. 2 and 3, the zigzag shell 32 has a symmetrical shape, and has an arc-shaped middle section and bent ends, wherein the bent ends are adjacent to the inner arc-shaped shell 31 from the connection point of the bent ends and form a plurality of bends. In some embodiments, the bending may be performed more than twice, and more bending may be performed.

When the entrainment vertical lifting structure works, as shown in fig. 1e, the process that the high-pressure air in the air chamber 3 overflows from the air holes of the disc groove of the inner cambered surface shell 31 to form an air cushion field becomes a hole outflow phenomenon. The air chamber 3, which is the main component of the air cushion machine, and the air chamber sliding groove (i.e. the groove formed by buckling the two inner arc surface shells 31) determine the shape of the flow field carrying the air cushion, and the stable and reliable formation of the air cushion is the key for the correct design and reliable operation of the air cushion belt conveyor. The air cushion pressure is the most basic parameter of the air cushion flow field, and the reasonable air cushion pressure distribution determines whether the entrainment belt can be lifted into an ideal air cushion.

The inner cambered surface shell 31 is provided with air outlets 33, the arrangement mode of the air outlets 33 can adopt a mode of central hole distribution and multi-hole arrangement, the thickness of an air film formed by the mode is in a state that the middle is large and the two sides are small, and the thickness of an air film formed by the mode of hole distribution with equal row, line spacing and equal diameter is in a trend that the middle is small and the two sides are large. According to the forming condition of the air cushion, the hole distribution modes with equal row, line spacing and diameter are more consistent with the section form of the material conveying of the vertical double-belt lifting structure. Although the thickness of the air film formed by the hole distribution modes with equal row, line spacing and diameter accords with the section form of the conveyed material, the double-belt conveying system conveys the material in a vertical lifting conveying mode, so the hole distribution modes with equal row, line spacing and diameter can generate the condition of uneven material stress caused by uneven weight distribution of the lifted material, the middle heavy stress is small, the two sides light stress is large, and great loss can be generated in the material conveying process.

As shown in FIG. 4, the design of the invention combines the material conveying condition of the double-belt conveying system to enlarge the middle aperture in proportion on the basis of adopting the hole distribution form with equal row, line spacing and diameter, so as to form the hole distribution form with equal line spacing, equal column spacing and equal difference diameter, and the pressure of the double-belt conveying system for holding the materials is more uniform and reliable under the condition of keeping the thickness distribution of the air film reasonable.

When the double-hole symmetrical gas transmission is used, the flow field in the gas chamber 3 has a strong convection phenomenon, and the pressure distribution of the gas chamber is also uneven. In order to solve the above problem, the present invention intends to provide the air deflector 34 inside the air chamber 3 to alleviate the convection phenomenon and the uneven pressure inside the air chamber 3. As shown in fig. 3, a bent air deflector 34 is provided in the air chamber 3, extending from the central region to the upper and lower ends (the upper and lower directions are distinguished from each other by the angle of vertical lift). The flow field distribution of the air chamber 3 after the air deflector 34 is added presents a more uniform state of speed and pressure compared with the state before the air deflector 34 is not added.

By comparing the flow field analysis diagrams of the two air chamber 3 structures, the internal flow field condition of the air chamber 3 with the air deflector 34 added presents a more uniform and more stable state no matter in the pressure uniformity and the airflow streamline distribution state than the state without the air deflector 34 added.

Meanwhile, in order to stabilize the air cushion function of the air chamber 3, the air chamber 3 needs to be fixed, and the air chamber 3 is fixedly connected with the truss 8 with the vertical lifting structure through an air chamber support frame 35 (comprising a longitudinal support frame and a transverse support frame) so as to reduce the thrust of the air flow and the driving force of the acting force on the air chamber 3.

In one embodiment, the air chamber 3 may take the following dimensions: as shown in fig. 1e, the arc angle α of the inner arc shell 31 of the air chamber 3 is around 30 °, preferably 30 °. The length of the single air chamber 3 section is 3000mm, the width is 960mm, and the height is 360 mm. The thickness of the chute of the air chamber 3 is 2.5mm, and the inner cambered surface shell 31 and the outer zigzag shell 32 are welded, so that the air tightness of the air chamber 3 is ensured.

The minimum pressure intensity calculation formula of material lifting is as follows:

a-maximum allowable charging cross section area m of conveyer belt²；

Rho-bulk density of material t/m³；

g＝9.8

μ is the coefficient of friction.

In some embodiments, the speed difference between the carrying conveyor belt 2 and the covering conveyor belt 1 is easily generated in the convex arc section (turning from vertical to horizontal), the energy consumption of the driving motor is increased due to the elastic deformation and the generated friction stress of the double-clamping belt, and the double-clamping belt generates wrinkles and bulk materials at the joint when the double-clamping belt is serious. In order to reduce the speed difference and achieve the effect of synchronous operation, the conveyer belt is prevented from generating impact when the convex arc section conveys materials so as to cause the conveyer belt to generate breakage and abrasion, the impact on the carrier roller to a certain degree is generated when the conveyer belt moves, and the service life of the whole conveying system is prolonged. The invention designs the buffering pressure-regulating carrier roller unit 9, adopts a plurality of rows of carrier rollers to replace a large-scale turnabout drum to change directions of double belts, on one hand, the weight caused by the large-scale turnabout drum can be greatly reduced, on the other hand, the structure of a double-belt conveying system of a lifting section can be more compact, and the characteristics of lightness, compactness and the like of the lifting section of the belt-type ship unloader are met to the maximum extent. The vibration impact on the carrier roller in the processes of starting, stopping and changing directions of the conveyor belt is relieved, and the material is always kept in a clamped state in the process of changing the direction of the material held by the conveyor belt.

Meanwhile, according to the characteristics of conveyed materials, under the conditions of sufficient materials and insufficient materials, the convex arc sections have different clamping forces on the materials, so that the pressure adjusting devices are added to the carrier rollers according to the design aiming at the difference of the actual output of the conveyed materials and the stress of the convex arc sections due to the difference of the actual output of the conveyed materials, and the pressure of the conveying belts on the materials is adjusted in real time.

Specifically, as shown in fig. 5, the buffer pressure-regulating idler unit 9 includes: the support structure comprises an integral support 94, a buffer supporting plate 91, an elastic buffer part (namely a buffer spring 92), a pneumatic cylinder 93 and a plurality of supporting rollers which are arranged in parallel, wherein the buffer supporting plate 91 is installed on the integral support 94 through the elastic buffer part, the non-adjacent ends of the supporting rollers (namely oblique supporting rollers 95) at the ends are installed on the buffer supporting plate 91 through end supporting roller brackets 96, the connecting ends of two adjacent supporting rollers (namely oblique supporting rollers 95 and horizontal supporting rollers 97) are respectively connected onto a middle area supporting roller bracket 98, the middle area supporting roller bracket 98 is supported through the pneumatic cylinder 93, the pneumatic cylinder is provided with a pneumatic cylinder air chamber 931, a vent pipe 932 and a push rod 933, and the sealing rings 934 are connected in a sealing mode. Based on the condition that a compression spring has the characteristics of buffering and vibration reduction, and the groove-shaped angle of the adjusting groove-shaped carrier roller and the height of the flat carrier roller can increase the belt tension to a certain extent, a novel buffering and pressure-adjusting carrier roller is provided.

The edge sealing devices 5 are arranged on the left side and the right side of the air chamber 3 and used for clamping the bearing conveyor belt 2 and the covering conveyor belt 1, so that materials of the two conveyor belts cannot leak out of the two conveyor belts when the materials are conveyed. The edge sealing device 5 comprises an edge sealing shell 53, an opening of the shell is used for placing the bearing conveyer belt 2 and the covering conveyer belt 1, a first press belt carrier roller 51 for bearing the conveyer belt 2 and a second press belt carrier roller for bearing the covering conveyer belt 1 are arranged in the edge sealing shell 53, and the first press belt carrier roller 51 and the second press belt carrier roller are connected to the inner wall of the shell through a compression spring 52; the opening of the sealed edge shell 53 is provided with a strip edge reed 54, and the inner end part of the shell is provided with an end part spring pressing sheet 55. The longitudinal sealing device with the edge is of an elastic structure, when the air chamber 3 is not inflated, the sealing element is pressed against the edge of the adhesive tape by the pressure of the spring, and when the air chamber 3 is filled with low-pressure air, the sealing element is pressed against the edge of the adhesive tape by the action of air pressure, so that the bearing belt and the covering belt are tightly attached together. A small amount of air overflows between the sealing element and the adhesive tape to form an air cushion.

The invention adopts a sealing device 5 combining a sealing reed and a spring carrier roller, and the model of the sealing device is shown in figure 6. The banding device 5 with longitudinal edges designed this time utilizes an elastic structure to seal, so that the smooth operation and the small operation resistance can be ensured when the bearing conveyer belt 2 and the covering conveyer belt 1 can compress tightly when the air chamber 3 has no air pressure. When the elastic structure is applied, the design of the invention tries to add the spring carrier roller to compress the double belts, thereby ensuring the transverse tension of the two conveying belts during operation.

The lower part of the material conveying space between the bearing conveyer belt 2 and the covering conveyer belt 1 is provided with a feeding port for receiving the material conveyed by the impeller 4 of the feeding structure 7.

In addition, it should be understood by those skilled in the art that in the specification of the embodiments of the present invention, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

In the description of the embodiments of the invention, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description. Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the invention, to simplify the disclosure of embodiments of the invention and to aid in the understanding of one or more of the various inventive aspects.

However, the disclosed method should not be interpreted as reflecting an intention that: that is, the claimed embodiments of the invention require more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of an embodiment of this invention.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. An entrained vertical lift structure, comprising: the material conveying device comprises a bearing conveying belt, a covering conveying belt and an air chamber, wherein the bearing conveying belt and the covering conveying belt are parallel, a material conveying space is formed between the bearing conveying belt and the covering conveying belt, the material conveying space is wrapped by the air chamber, and the air chamber penetrates from the lower part to the upper part of the entrainment vertical lifting structure;

2. The entrainment vertical lifting structure of claim 1 wherein the middle section of the outer serpentine shell is an arcuate surface and the two ends are curved surfaces, the curved surfaces approaching the inner arcuate shell from the junction with the arcuate surface and forming a plurality of bends.

3. The entrained vertical lift structure of claim 1, wherein the curved cavity is a symmetrical structure.

4. An entrained vertical lift structure as recited in claim 1, wherein the plenum is fixedly connected to the truss of the entrained vertical lift structure by plenum bracing.

5. An entrainment vertical lifting structure as claimed in claim 1 wherein said outlet holes are proportionally enlarged from the central area hole to the edge in turn, all the outlet holes being distributed on said inner cambered shell in the manner of: the equal line spacing, the equal column spacing and the equal difference diameter are arranged from the middle.

6. An entrained vertical lift structure as recited in claim 1, wherein a curved wind deflector is disposed within the plenum and extends from the central region to the upper and lower ends.

7. An entrainment vertical lifting structure according to any one of claims 1 to 6, characterized in that the carrier belt is provided with buffer pressure regulating idler units in the convex arc section changing vertically to horizontally.

8. The entrained vertical lift structure of claim 7, wherein the buffer pressure regulating idler unit comprises: the supporting roller device comprises an integral supporting piece, a buffering supporting plate, an elastic buffering piece, a pneumatic cylinder and a plurality of supporting rollers which are arranged in parallel, wherein the buffering supporting plate is installed on the integral supporting piece through the elastic buffering piece, the non-adjacent ends of the supporting rollers at the end parts are installed on the buffering supporting plate through end part supporting roller brackets, the connecting ends of the two adjacent supporting rollers are respectively connected to a middle area supporting roller bracket, and the middle area supporting roller bracket is supported through the pneumatic cylinder.

9. An entrainment vertical lifting structure according to any one of claims 1 to 6, wherein the edge banding device comprises a housing, the housing having an opening for the insertion of the carrier web and the cover web, a first belt idler bearing the carrier web is provided in the housing, and a second belt idler bearing the cover web is provided, the first belt idler and the second belt idler being connected to the inner wall of the housing by compression springs;

and a sealing reed is arranged at the opening of the shell.

10. An entrainment vertical lifting structure according to any one of claims 1 to 6, characterized in that a material inlet is provided at a lower part of the material conveying space between the carrying conveyor belt and the covering conveyor belt to receive the material conveyed by the feeding structure; and/or, the entrainment vertical lifting structure further comprises: the truss is longitudinally supported.