CN115175864A

CN115175864A - Feeding device

Info

Publication number: CN115175864A
Application number: CN202180000338.5A
Authority: CN
Inventors: 不公告发明人
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-01-18
Filing date: 2021-01-18
Publication date: 2022-10-11
Also published as: WO2022151496A1

Abstract

The application provides a feeding device. The feeding device comprises a hopper, the hopper comprises a first side wall and a second side wall, a first included angle between the first side wall and the horizontal plane is larger than or equal to the stacking gradient of a material stack formed by stacking materials conveyed by the hopper or larger than or equal to 35 degrees, the horizontal distance between the upper end of the second side wall and the first side wall is smaller than the horizontal distance between the lower end of the second side wall and the first side wall, and a second included angle between the second side wall and the horizontal plane is smaller than 90 degrees; batcher, the batcher rotationally sets up between primary side wall and secondary side wall, and between batcher and the primary side wall and all have the unloading clearance between batcher and the secondary side wall to disperse the material along self axial when the batcher rotates, and make the material along the axial unloading of batcher. The feeding device can avoid arching.

Description

Feeding device

Technical Field

The embodiment of the application relates to the field of mechanical equipment, in particular to a feeding device.

Background

The problems of bridging and arching of materials exist in the field of material conveying for a long time, for example, the materials are mutually adhered to form a stable state due to stress. Once the material is arched, the material cannot be discharged, so that the material flow is interrupted, and the shell bearing the material is also subjected to great pressure in the moment of collapsing the material during arch breaking, so that the shell is easily damaged, and the reliability is influenced.

In the prior art, a vibration method is usually adopted to prevent the material from arching, namely, mechanical force is adopted to vibrate the outer wall of the shell or vibrate the material, so that the arch breaking effect is achieved. However, this method can be realized only by adding extra large mechanical external force, so that external energy with very high power is needed to provide, which results in very high operation cost, especially for the case of very large amount of material, the cost is very huge.

Disclosure of Invention

In order to solve the above problem, embodiments of the present application provide a feeding device to at least partially solve the above problem.

According to a first aspect of embodiments of the present application, there is provided a feeding device, including: the hopper comprises a first side wall and a second side wall, a first included angle between the first side wall and the horizontal plane is larger than or equal to the stacking gradient of a material stack formed by stacking materials conveyed by the hopper or larger than or equal to 35 degrees, the horizontal distance between the upper end of the second side wall and the first side wall is smaller than the horizontal distance between the lower end of the second side wall and the first side wall, and a second included angle between the second side wall and the horizontal plane is smaller than 90 degrees; batcher, the batcher rotationally sets up between primary side wall and secondary side wall, and between batcher and the primary side wall and all have the unloading clearance between batcher and the secondary side wall to disperse the material along self axial when the batcher rotates, and make the material along the axial unloading of batcher.

Optionally, the dispenser comprises: the batching rotating shaft is rotatably arranged between the first side wall and the second side wall; the axial batching structure, the axial batching structure sets up in the batching axis of rotation to rotate along with the batching axis of rotation, with the material that will drop on the batcher along the axial dispersion of batching axis of rotation.

Optionally, the axial dosing structure comprises at least two segments of dosing screws, wherein the directions of rotation of the at least two segments of dosing screws are opposite.

Optionally, the first side wall and the second side wall are provided with adjusting grooves, two ends of the batcher in the axial direction are arranged in the adjusting grooves in a one-to-one correspondence manner, and the batcher can move in the vertical direction along the adjusting grooves to adjust the width of the blanking gap between the batcher and the first side wall and the second side wall.

Optionally, both ends of the batcher are provided with baffles, which extend in the vertical direction to cover the adjustment tank.

Optionally, the second sidewall includes an upper section, a lower section, and a connecting section, the upper section and the lower section pass through the connecting section, the upper section and the lower section are parallel to each other, and a horizontal distance between the upper section and the first sidewall is smaller than a horizontal distance between the lower section and the first sidewall.

Optionally, a value of a second included angle between the lower section and the horizontal plane is 90 degrees minus a self-locking angle between the material and the second side wall.

Optionally, the feeding device further comprises a drying cavity located outside the hopper and covering at least a part of the hopper, and drying gas is introduced into the drying cavity to dry the material.

Optionally, the feeding device further comprises a pushing row, the pushing row is positioned above the dispenser, the pushing row comprises a plurality of movable pushing teeth, and downward pushing force is applied to the materials above the dispenser.

Optionally, the top of the hopper is provided with an opening for feeding, and the feeding device further comprises a spreader arranged at the opening of the hopper, so that the material entering the hopper from the opening is spread along the axial direction of the spreader.

Optionally, the spreader comprises: a roll shaft; and at least two sections of spreading material spiral structures are arranged on the roll shaft along the axial direction of the roll shaft, the spiral directions of the at least two sections of spreading material spiral structures are opposite, the roll shaft is rotatably arranged at the opening, and the positions of the roll shaft and the opening correspond, so that the material entering the hopper from the opening falls into the space between the at least two sections of spreading material spiral structures.

In the embodiment of the application, the feeding device is used for conveying materials. In order to prevent the materials from arching in the hopper, the hopper comprises a first side wall and a second side wall, a first included angle between the first side wall and the horizontal plane is larger than or equal to the stacking gradient gamma of a fuel stack formed by stacking the materials, the horizontal distance between the upper end of the second side wall and the first side wall is smaller than the horizontal distance between the lower end of the second side wall and the first side wall, and a second included angle between the second side wall and the horizontal plane is smaller than 90 degrees.

The batcher sets up between first lateral wall and second lateral wall, and all has the unloading clearance between batcher and the first lateral wall and between batcher and the second lateral wall to make the material along the axial unloading of batcher.

Because the first included angle between the first side wall and the horizontal plane is larger than or equal to the stacking gradient of the materials, the gravity of the materials can provide enough gliding component force for overcoming the friction force, so that the materials can glide downwards along the inner wall surface of the first side wall smoothly, and the materials are prevented from arching in the hopper. Similarly, in order to eliminate the friction between the material and the second side wall and enable the material to flow naturally by means of its own gravity, so as to prevent the material from arching in the hopper, the second included angle between the second side wall and the horizontal plane is less than 90 ° (preferably, 90 ° -minus the self-locking angle of the material with respect to the second side wall), and the upper end of the second side wall is closer to the first side wall than the lower end thereof in the horizontal direction, which ensures that the friction between the material and the second side wall can be eliminated.

The batcher can realize the dispersion to the material, make the material along the axial dispersion of batcher, promote the homogeneity of defeated material, through the inclination of control primary side wall and second lateral wall, in order to optimize the stress state of material in the hopper, thereby clear up the frictional force of material and primary side wall and second lateral wall, make the material can smoothly fall, and can not become arched in the hopper, and need not additionally to dispose powerful vibration source, it is smooth and easy to have ensured that the material is carried, the running cost is reduced.

Drawings

The drawings are only for purposes of illustrating and explaining the present application and are not to be construed as limiting the scope of the present application.

FIG. 1 is a schematic cross-sectional perspective view of a feeding device and a fixture according to an embodiment of the present disclosure;

FIG. 2 is a schematic cross-sectional perspective view of another feeding device of the present application in cooperation with a fixture;

FIG. 3 is a schematic view of another feeding device of the present application in cooperation with a fixture;

FIG. 4 is a schematic structural diagram illustrating a feeding device with a drying chamber and a fixture in cooperation with an embodiment of the application;

fig. 5 is a schematic perspective view illustrating a dispenser of another feeding device according to an embodiment of the present disclosure; and

fig. 6 is a schematic perspective view of a spreader of another feeding device according to an embodiment of the present disclosure.

41. A cavity housing; 42. a feed inlet; 81. a first side wall; 82. a second side wall; 821. a lower section; 822. an upper section; 83. a dosing device; 831. a baffle plate; 841. a first touch switch; 85. a drying chamber; 851. pushing teeth; 86. spreading machine; 861. a roll shaft; 862. the batching is of a spiral structure.

Detailed Description

In order to make those skilled in the art better understand the technical solutions in the embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application shall fall within the scope of the protection of the embodiments in the present application.

Referring to fig. 1, a feeding device is shown, the feeding device comprises a hopper and a batcher 83, the hopper comprises a first side wall 81 and a second side wall 82, a first included angle Φ 1 between the first side wall 81 and a horizontal plane 43 is greater than or equal to a stacking gradient γ of a stack formed by stacking materials conveyed by the hopper or the first included angle Φ 1 is greater than or equal to 35 °, a horizontal distance between an upper end of the second side wall 82 and the first side wall 81 is smaller than a horizontal distance between a lower end of the second side wall 82 and the first side wall 81, and a second included angle Φ 2 between the second side wall 82 and the horizontal plane 43 is smaller than 90 °; the dispenser 83 is rotatably disposed between the first side wall 81 and the second side wall 82, and there is a blanking gap between the dispenser 83 and the first side wall 81 and between the dispenser 83 and the second side wall 82, so as to disperse the material along its own axial direction when the dispenser 83 rotates, and to blank the material along the axial direction of the dispenser 83.

The feeding device is used for conveying materials. In order to prevent the materials from arching in the hopper, the hopper comprises a first side wall 81 and a second side wall 82, a first included angle phi 1 between the first side wall 81 and the horizontal plane is larger than or equal to the stacking gradient gamma of a fuel stack formed by stacking the materials, the horizontal distance between the upper end of the second side wall 82 and the first side wall 81 is smaller than the horizontal distance between the lower end of the second side wall 82 and the first side wall 81, and a second included angle phi 2 between the second side wall 82 and the horizontal plane is smaller than 90 degrees.

The dispenser 83 is disposed between the first side wall 81 and the second side wall 82, and there is a blanking gap between the dispenser 83 and the first side wall 81 and between the dispenser 83 and the second side wall 82, so that the material is blanked along the axial direction of the dispenser 83.

Because the first included angle phi 1 between the first side wall 81 and the horizontal plane is greater than or equal to the stacking gradient gamma of the material, the gravity of the material can provide a downward sliding component force enough to overcome the friction force, so that the material can slide down along the inner wall surface of the first side wall 81 more smoothly, and the material is prevented from arching in the hopper. Similarly, in order to eliminate the friction between the material and the second side wall 82 and enable the material to naturally flow by means of its own weight, so as to prevent the material from arching in the hopper, the second included angle Φ 2 between the second side wall 82 and the horizontal plane is smaller than 90 °, and the upper end of the second side wall 82 is closer to the first side wall 81 in the horizontal direction than the lower end thereof, which ensures that the friction between the material and the second side wall 82 can be eliminated.

Batcher 83 can realize the dispersion to the material, make the material along the axial dispersion of batcher 83, promote the homogeneity of defeated material, through the inclination of control first lateral wall 81 and second lateral wall 82, with the stress of optimizing the material in the hopper, thereby clear up the frictional force of material and first lateral wall 81 and second lateral wall 82, make the material smoothly fall, and can not become arched in the hopper, and need not additionally to dispose powerful vibration source, it is smooth and easy to have guaranteed that the material is carried, the running cost is reduced.

Alternatively, in another implementation, the first included angle between the first sidewall 81 and the horizontal plane may be slightly smaller than the stacking slope, as long as it is ensured that the first included angle is greater than or equal to 35 °.

For example, when the material is coal, grain, or other substance with good fluidity, the inventor finds that, in the research process, because the friction coefficient of the first side wall 81 is smaller than the friction coefficient of the surface of the coal or grain, the friction force between the coal or grain and the first side wall 81 is smaller than the friction force between two coal (or two grains), even if the first included angle is smaller than the stacking gradient, the coal or grain can be ensured to slide down smoothly as long as the included angle is larger than 35 °. Similarly, for the biomass fuel, if the first included angle between the first side wall 81 and the horizontal plane is smaller than the stacking gradient, it is only necessary to be greater than or equal to 40 °. As shown in fig. 1, in the present embodiment, the first side wall 81 may be a one-piece plate material, and is connected to the fixture by a mechanical connection method such as welding, bolting, riveting, or an integral forming method such as casting. Of course, the first side wall 81 may have other suitable structures and shapes besides the plate material, and the embodiment is not limited thereto.

The fixture can be different for different usage scenarios. For example, if the material being transported is a solid fuel (e.g., coal, biomass, or refuse), the stationary object can be a top wall of a solid fuel-fired furnace. For example, if the material to be conveyed is grain crops in a granular state such as wheat and corn, the fixed object may be a housing on the conveyor belt. As another example, if the material being conveyed is a granular industrial product (e.g., raw coal) to be processed, the stationary object may be a stationary base or the like.

The second side wall 82 may be a one-piece plate or other suitable structure and shape, and the second side wall 82 may also be connected to the fixture by a mechanical connection method such as welding, bolting, riveting, or an integral molding method such as casting.

The first side wall 81 and the second side wall 82 are disposed opposite to each other, for example, the lower end of the first side wall 81 is connected to a first end of an opening of a fixture through which the material passes, and the lower end of the second side wall 82 is connected to a second end of the opening of the fixture.

Optionally, the second side wall 82 comprises an upper section 821, a lower section 822 and a connecting section, the upper section 821 and the lower section 822 pass through the connecting section, the upper section 821 and the lower section 822 are parallel to each other, and a horizontal distance between the upper section 821 and the first side wall 81 is smaller than a horizontal distance between the lower section 822 and the first side wall 81.

Preferably, the second angle φ 2 between the lower segment 822 and the horizontal plane 43 is 90 minus the self-locking angle of the material to the second sidewall 82. The second included angle Φ 2 between the second sidewall 82 and the horizontal plane is the included angle between the lower segment 821 and the horizontal plane, the third included angle Φ 3 between the upper segment 822 and the horizontal plane is equal to the second included angle Φ 2, and is 90 ° minus the self-locking angle between the material and the second sidewall 82.

Because the upper section 822 and the lower section 821 are both obliquely arranged, and the inclination angle relative to the vertical direction is a self-locking angle (the value of the self-locking angle is 0-10 degrees, preferably 8-10 degrees), the friction force of the material relative to the second side wall 82 is eliminated, so that the material is not arched or bridged in the hopper, and when the material is required to fall, the material can smoothly fall down by applying a disturbance through the batcher 83.

The included angle between the connecting section and the horizontal plane can be set according to the requirement, and the embodiment is not limited. The advantage of providing a connecting section is that other required structures (e.g. level detectors) etc. can be mounted on the connecting section without affecting the angle between the upper section 822 and the lower section 821 and without affecting the smooth falling of the material.

In this embodiment, the dosing member 83 is arranged horizontally and parallel to the first side wall 81 and the second side wall 82, and in order to be able to support the dosing member 83, the hopper further comprises a third side wall on which a first axial end of the dosing member 83 is arranged and a fourth side wall on which a second axial end of the dosing member 83 is arranged.

Preferably, in order to accommodate different maximum particle sizes of the materials, the hopper is adapted to be lifted, and the dosing member 83 is movable in the height direction, so that the width of the blanking gap (W1 and W2 shown in the figure) between the dosing member 83 and the first and

second side walls

81 and 82 is varied to accommodate different maximum particle sizes of the materials.

In one example, the first and

second side walls

81 and 82 are provided with adjustment grooves, the two ends of the dispenser 83 in the axial direction are arranged in the adjustment grooves in a one-to-one correspondence, and the dispenser 83 can move in the vertical direction along the adjustment grooves to adjust the width of the blanking gap between the dispenser 83 and the first and

second side walls

81 and 82.

To avoid leakage of material from the adjustment channel, both ends of the dispenser 83 are provided with a flap 833, the flap 833 extending in the vertical direction to cover the adjustment channel. The baffles can be driven to move together when the dispenser 83 moves up and down to ensure that the baffles do not interfere with the movement of the dispenser 83.

Optionally, the batcher 83 includes a batching rotation shaft 831 and an axial batching structure 832, the batching rotation shaft 831 being rotatably disposed between the first side wall 81 and the second side wall 82; axial dosing structure 832 is disposed on dosing rotation shaft 831 and rotates with dosing rotation shaft 831 to disperse material falling on dosers 83 in the axial direction of dosing rotation shaft 831. The dispenser 83 with this structure can realize axial dispersion of the material, thereby realizing uniform material conveying.

Preferably, the axial dosing structure 832 comprises at least two segments of dosing screws, the directions of rotation of the at least two segments of dosing screws being opposite. When the ingredient rotating shaft 831 rotates, the ingredient spiral body rotates along with it, so that the material is pushed spirally to move in the axial direction, and at the same time, the ingredient spiral body can provide a moving space for the material, and the abutting force is counteracted by the axial movement when the material is abutted against the first side wall 81 or the second side wall 82, so as to prevent the first side wall 81 and the second side wall 82 from being damaged.

Any two sections of dosing screws with different turning directions may be connected together, i.e. have a common end point, or may be separated by a certain distance.

In one example, two sections of dosing screws with different rotation directions can be arranged on the dosing rotating shaft 831, and each section of dosing screw is of a single-thread structure, so that axial material distribution is realized. Alternatively, in another example, two sets of dosing screws may be disposed on the dosing rotating shaft 831, and the two sets of dosing screws may include 3, 4 or more dosing screws, as long as it is ensured that the axial distribution can be achieved by ensuring that the rotational directions of at least two segments of dosing screws are different.

For example, the two sets of dosing screws may include four dosing screws, each set of dosing screws including two equally-handed dosing screws forming a double-threaded structure.

In an example, to make the dispenser 83 more intelligent, the feeding device further comprises a level detector to detect the level below the dispenser 83, thereby controlling the dispenser 83 according to the level.

The material level detector can include distance measuring sensor, and distance measuring sensor sets up in the hopper, and is connected with batcher 83's driving motor, when detecting the height that highly satisfies the settlement height of the material of batcher 83 below, makes batcher 83's driving motor stop action to stop the batching. When the material height below the dosing device 83 is detected not to meet the set height, the driving motor of the dosing device 83 is rotated, and the dosing device 83 starts to discharge. This allows the dispenser 83 to have the effect of controlling the amount of material delivered. Taking the example that the feeding device is applied to the combustion furnace for conveying materials (such as solid fuel) into the hearth of the combustion furnace, the material distributor 83 is arranged to control whether the materials above can fall off, so that the effect of controlling the amount of the materials entering the hearth through the material distributor 83 is realized.

The distance measuring sensor may be a laser distance meter, an ultrasonic distance meter, or the like as long as it can measure the level of the material. Preferably, in order to improve the adaptability of the hopper, the feeding device further comprises a drying cavity 85 which is positioned outside the hopper and covers at least part of the hopper, and drying gas is introduced into the drying cavity 85 to dry the materials.

By stopping the drying chamber 85 and introducing a drying medium (e.g., a gas or liquid having a higher temperature than the material) therein, the material can be dried to reduce the viscosity and improve the fluidity of the material.

The drying chamber may be formed by a cylinder body sleeved outside the hopper, or may be formed by any suitable manner such as connecting a plate outside the first side wall 81 and the second side wall 82, which is not limited in this embodiment.

For the material with higher humidity, the material has poor fluidity and is more easily adhered to the first side wall 81 and the second side wall 82, and in order to avoid adhesion, the feeding device further comprises a pushing row which is positioned above the dosage unit 83, comprises a plurality of movable pushing teeth and applies a downward pushing force to the material above the dosage unit 83.

The push bar is used to apply a downward pushing force to the material to move the material downward when needed. The pusher may be synchronized with the start and stop of the dispenser 83 so that the pusher moves with the dispenser 83 as the dispenser 83 rotates to engage the dispenser 83 to drop the material.

In one example, the pusher teeth 851 may reciprocate up and down along an inner wall surface of the first sidewall 81 of the hopper. Thus, when the pushing teeth 851 moves downwards, a downward moving pushing force can be applied to the material, and when the pushing teeth 851 moves upwards, the material is not moved sufficiently, so that the pushing teeth 851 move circularly.

The structure, shape, material, etc. of the push teeth 851 may be determined as needed, and this embodiment is not limited thereto. For example, the push teeth 851 may be triangular push teeth, trapezoidal push teeth, or the like.

Preferably, the lower surface of the push tooth 851 is attached to the inner wall surface of the first side wall 81, so that the push tooth 851 can be effectively prevented from being stuck or materials can be prevented from being adhered to the first side wall 81.

In order to prevent excessive wear when the push tooth 851 is fitted to the first side wall 81, a wear-resistant coating may be provided on the push tooth 851 and/or the inner wall surface of the first side wall 81.

In order to further improve the feeding uniformity, the top of the hopper is provided with an opening for feeding, and the feeding device further comprises a spreader 86, wherein the spreader 86 is arranged at the opening of the hopper, so that the material entering the hopper 86 from the opening is spread along the axial direction of the spreader.

The spreader 86 is used for distributing the material in the axial direction, so as to solve the problem that the width of the material conveying and discharging belt or the conveying belt in the prior art is limited, so that the material is concentrated in a narrow range when reaching the hopper and cannot be uniformly dispersed on the whole surface of the hopper.

Optionally, the material spreader 86 comprises a roller 861 and at least two sections of spreading spiral structures arranged on the roller 861 along the axial direction of the roller 861, the spiral directions of the at least two sections of spreading spiral structures are opposite, the roller 861 is rotatably arranged at the opening, and the positions of the roller 861 and the opening correspond, so that the material fed into the hopper from the opening falls into the at least two sections of spreading spiral structures.

Through setting up at least two sections and spreading out material helical structure and can make the material remove to the both ends of roller 861 along spreading out material helical structure at the roller 861 rotation in-process to the realization disperses the material in the axial, and along with the rotation of roller 861, the material drops downwards simultaneously, piles up the top at batcher 83.

At least two spreading helix segments can be connected together, i.e., have a common end point, or can be separated by a distance.

In one example, if two sections of spreading spiral structures are disposed on the roller shafts 861, single threads with different rotation directions are formed, so as to achieve axial material distribution. Or, in another example, if more than two sections of spreading spiral structures are arranged on the roller shafts 861, if four sections of spreading spiral structures are arranged, two threads with different rotation directions can be formed, so as to realize axial material distribution.

Based on this principle, an appropriate number of spreading spiral structures can be arranged on the roller shafts 861, which is not limited in this embodiment.

Optionally, the feeding device may also include a detector for the level of material above the dispenser 83 in order to accurately control the movement of the spreader 86.

The detector can be a mechanical swing rod and touch switch structure, the touch switch is connected with the driving motor of the material spreader 86, when the material level above the material spreader 83 meets the requirement, the swing rod is pressed against the touch switch, and the touch switch stops the driving motor of the material spreader 86 from rotating; when the material level above the batcher 83 does not meet the requirement, the swing rod is separated from the touch switch, and the touch switch enables the driving motor of the spreader 86 to rotate, so that the spreader 86 rotates, and the material enters the hopper.

Of course, the detector may be a non-contact detector, which is not limited in this embodiment.

The hopper can be applied to all scenes generating material flows, such as the grain storage process, and the material flows are generated by grain transportation or processing. For another example, in the coal processing industry, material flows are generated during the conveying and processing of raw coal, and the hopper in the application can be used for conveying and controlling materials in the scenes with the material flows.

The following description of the working process of the hopper with reference to a specific use scenario is as follows:

taking grain processing as an example, the hopper may be required in some processes when different treatments are performed on the grain, such as when the grain in a grain bin is conveyed to a crushing process, the hopper is required to be configured on a crusher to feed the crusher. In this scenario, the hopper is connected to the chamber shell 41 of the crusher.

A feed inlet 42 is arranged at the top of the cavity shell 41, and a conveying pipe is arranged above the opening of the hopper and used for conveying grains into the hopper. Normally, the feeding of the conveying pipe belongs to point feeding, namely, grains are gathered in a small area, and if the grains are not processed, the grains cannot be rapidly dispersed into the whole hopper, so that the space of the hopper is wasted. However, the hopper of the present application has the spreader 86, so that the grains falling from the conveying pipe are dispersed along the axial direction by the spreader 86 when falling onto the spreader 86, and then dispersed to the whole cross section of the hopper along with the flow of the grains, thereby making the grains more fully filled in the space of the whole hopper.

With respect to the distributor 82 below the spreader 86, the grain above is delivered under the distributor 82 while being dispersed in the axial direction as it rotates, and then falls into the chamber case 41 for crushing treatment.

In the process, because the first included angle of the first side wall 81 is greater than or equal to the stacking gradient formed by grain stacking (or is greater than or equal to 35 degrees), and the second included angle of the second side wall 82 and the horizontal plane is 90 degrees minus the self-locking angle (the second side wall 82 inclines towards the first side wall 81), the friction force can be eliminated, so that the grain can smoothly slide down without arching, and the conveying safety is ensured.

Through the structure that changes the hopper in this embodiment, the stress state of material in the hopper has been changed to avoid the knot to encircle, and then avoided the problem that the knot encircles and exist.

It should be understood that although the specification has been described in terms of various embodiments, not every embodiment includes every single embodiment, and such description is for clarity purposes only, and it will be appreciated by those skilled in the art that the specification as a whole can be combined as appropriate to form additional embodiments as will be apparent to those skilled in the art.

The above description is only an exemplary embodiment of the present disclosure, and is not intended to limit the scope of the present disclosure. Any person skilled in the art should be able to make equivalent changes, modifications and combinations without departing from the concept and principle of the embodiments of the present application.

Claims

A feeding device, characterized in that the feeding device comprises:

the hopper comprises a first side wall (81) and a second side wall (82), a first included angle (phi 1) between the first side wall (81) and a horizontal plane (43) is larger than or equal to a stacking gradient (gamma) of a material stack formed by stacking materials conveyed by the hopper or the first included angle (phi 1) is larger than or equal to 35 degrees, the horizontal distance between the upper end of the second side wall (82) and the first side wall (81) is smaller than the horizontal distance between the lower end of the second side wall (82) and the first side wall (81), and a second included angle (phi 2) between the second side wall (82) and the horizontal plane (43) is smaller than 90 degrees;

batcher (83), batcher (83) rotationally sets up between first lateral wall (81) and second lateral wall (82), just batcher (83) with between first lateral wall (81) with batcher (83) with all have the unloading clearance between second lateral wall (82), with batcher (83) rotate when the time along self axial right the material disperses, and makes the material along the axial unloading of batcher (83).
The feeding device according to claim 1, characterised in that the dosing means (83) comprise:

a ingredient rotation shaft (831), the ingredient rotation shaft (831) being rotatably disposed between the first side wall (81) and the second side wall (82);

an axial dosing structure (832), the axial dosing structure (832) is arranged on the dosing rotating shaft (831) and rotates along with the dosing rotating shaft (831) to disperse the material falling on the dosing device (83) along the axial direction of the dosing rotating shaft (831).
Feeding device according to claim 2, characterised in that said axial distribution structure (832) comprises at least two sections of distribution screws, the directions of rotation of which are opposite.
The feeding device according to any one of claims 1 to 3, characterized in that the first side wall (81) and the second side wall (82) are provided with adjustment grooves, the dosing devices (83) are arranged in the adjustment grooves in a one-to-one correspondence at both ends in the axial direction, and the dosing devices (83) are movable in the vertical direction along the adjustment grooves to adjust the width of the blanking gap between the dosing devices (83) and the first side wall (81) and the second side wall (82).
The feeding device according to claim 4, characterised in that the dosing means (83) are provided with flaps (833) at both ends, the flaps (833) extending in a vertical direction to cover the adjustment channel.
The feeding device according to claim 1, characterized in that said second lateral wall (82) comprises an upper section (821), a lower section (822) and a connecting section through which said upper section (821) and said lower section (822) pass, said upper section (821) and said lower section (822) being parallel to each other and the horizontal distance between said upper section (821) and said first lateral wall (81) being smaller than the horizontal distance between said lower section (822) and said first lateral wall (81).
The feeding device according to claim 1 or 6, characterised in that a second angle (Φ 2) between the lower section (822) and the horizontal plane (43) has the value 90 ° minus the self-locking angle of the material with the second side wall (82).
The feeding device according to claim 1, characterized in that the feeding device further comprises a drying chamber (85) located outside the hopper and covering at least a part of the hopper, and drying gas is introduced into the drying chamber (85) to dry the material.
The feeding device according to claim 8, characterized in that the feeding device further comprises a pusher bar located above the dosage element (83), and the pusher bar comprises a plurality of movable pusher teeth and applies a downward pushing force to the material above the dosage element (83).
The feeding device as set forth in claim 8, wherein the top of the hopper is provided with an opening for feeding, and the feeding device further comprises a spreader (86) provided at the opening of the hopper such that the material introduced into the hopper from the opening is spread in an axial direction of the spreader.
The feeding device as set forth in claim 10, wherein the spreader (86) comprises:

a roller shaft (861); and

along the axial setting of roller (861) is in at least two sections of spreading out material helical structure on roller (861), at least two sections spread out material helical structure's spiral opposite direction, roller (861) rotationally sets up the opening part, roller (861) with the open-ended position corresponds, thereby makes certainly the material that the opening got into the hopper falls into at least two sections spread out between the material helical structure.