CN217971721U - Rotary feeder - Google Patents

Abstract

The application relates to a rotary feeder includes: storage barrel, the drive division, pivot and rotatory impeller, storage barrel's inside has the storage chamber, the strong point installation weighing unit, the downward intercommunication of the lopsidedness of storage barrel has the discharging pipe, the drive division is connected with the pivot transmission, the pivot stretches into to inside from storage barrel's bottom, with storage barrel bottom phase-match, rotatory impeller ann is in the pivot, be located the storage chamber, rotatory impeller is two-layer above from the coaxial and wheel ring structure that the interval set up of middle part to outward flange direction, connect through the several blade between the adjacent two-layer wheel ring structure, and the blade is laid around the center of wheel ring structure. Through multilayer rim structure and the blade that evenly lays around the axis of rotation at rim structure spare and replace the form individual layer blade that diffuses, this layering blade arranges, the discharging pipe can be stable with the butt joint of storage cavity, blade and discharging pipe are stable dynamic crossing always, make the feed volume stable, even can realize stable feeding when large-scale feeder small load operation.

Description

Rotary feeder

Technical Field

The application relates to a rotatory reinforced technical field especially relates to a rotary feeder.

Background

The present industrial production process of steel, electric power, non-ferrous, coal chemical, silicon chemical, solid waste and other industries involves the quantitative addition of a large amount of bulk granular or powdery solid materials into different high-temperature high-pressure furnaces, gasifiers and reactors. The stable and accurate feeding of the feeder usually has great influence on the production stability, the product quality, the production efficiency and the raw material consumption. The rotary feeding device is a positive displacement feeding device, materials are conveyed from a feeding hole to a discharging hole through a rotary impeller, and then are conveyed into a kiln or a reactor for reaction through conveying air. The rotary feeding device has the advantages of better controllability, air tightness and the like, and is widely applied to continuous feeding and transportation of pressurized bulk particles or powdery solid materials.

The working principle of the existing rotary feeding device is as follows: under a certain solid material is stored in the feed tank, the solid material is filled in the fan-shaped subspace of the rotary impeller through the top plate feed inlet. The rotary feeding device drives the shaft to rotate by the variable frequency motor, solid materials filled in the sector subspaces rotate 180 degrees and fall into the discharge hole of the bottom plate, and feeding and conveying of the solid materials are realized under the action of blowing air of the discharge pipe.

The rotating impeller in the existing rotating feeding device adopts a single-layer diffused orange-peel structure, and in order to ensure the strength and the wear resistance of blades of the rotating impeller, the blades need to reach a certain thickness, so that when each blade rotates to pass through a discharge port, solid materials cannot fall into the discharge port; when the blade rotates the low-angle, receive wall effect and dynamic knot to encircle, solid material feed volume is less, only after the blade rotates certain angle, just the solid material feed volume reaches the design value, and feed device all can appear the feed volume when every through a blade and fluctuate, and especially the rotatory feeder of big feed volume design is when the low-load operation, and the feed volume fluctuation is more obvious, seriously influences the reaction effect and the operating stability in kiln, the reactor.

In conclusion, the problem of feeding fluctuation of the conventional rotary feeding device is that the feeding stability and accuracy are poor along with the increase of the scale of the feeding device and the improvement of the operating pressure, so that the requirement of reaction in a kiln or a reactor on the feeding stability cannot be met, and the problem of poor product quality is caused.

SUMMERY OF THE UTILITY MODEL

In view of this, the present application provides a rotary feeder, which includes a storage cylinder, a driving portion, a rotating shaft, and a rotating impeller; a material storage cavity is formed in the material storage barrel, a weighing unit is installed at a supporting point, and a discharge pipe is communicated with one side of the material storage barrel in an inclined and downward manner; the driving part is in transmission connection with the rotating shaft, the rotating shaft extends into the storing barrel from the bottom of the storing barrel, and the rotating shaft is matched with a bearing group positioned at the bottom of the storing barrel; rotatory impeller fixed mounting be in the pivot, and be located the storage intracavity, rotatory impeller is two-layer above from the middle part to the coaxial and interval of outward flange orientation wheel ring structure that sets up, and is adjacent two-layer connect through the several blade between the wheel ring structure, just the blade winds the center of wheel ring structure is laid.

In a possible implementation manner, projections of the blades in the rotating shaft direction are linear, and the blades in the adjacent two layers of the wheel ring structures are not in the same straight line.

In a possible implementation manner, the projection of the blade in the direction of the rotating shaft is an arc line type, and the arc directions of the blades in the adjacent two layers of the wheel ring structures are opposite.

In one possible implementation, the number of layers of the rim structure is within [2,4 ].

In a possible implementation manner, a material storage space is formed between two adjacent blades in the wheel ring structure on the same layer, the radial length of the material storage space on each layer is equal, or the volume of the material storage space on each layer is equal.

In a possible implementation manner, except for the blades of the outermost circle, each blade is arranged at the midpoint position of two adjacent blades of the adjacent layer.

In a possible implementation manner, the device further comprises a feeding tank, wherein the storage barrel body comprises a barrel main body, a top plate and a bottom plate; the middle-lower section of the feeding tank is of a bell mouth structure with a wide upper part and a narrow lower part; the cylinder main body is a hollow cylinder and forms the material storage cavity together with the top plate and the bottom plate in an enclosing manner; the top plate is covered on the upper part of the barrel, a feed inlet is formed in one side of the plate surface of the top plate, the forming position of the feed inlet is opposite to the direction of the discharge pipe, and an air inlet pipeline is formed in the top plate from the radial direction to the inner side; the air inlet pipeline comprises a main pipeline which is inwards opened from the outer side of the top plate, and a plurality of branch pipelines which are communicated with the main pipeline and are downwards opened; the bottom plate is arranged at the lower part of the cylinder main body, a discharge hole which is communicated with and matched with the discharge pipe in shape is formed in the bottom plate, and the discharge hole is correspondingly formed below the branch pipelines; the feed tank is installed on the storage barrel, the middle-lower section is of a horn mouth structure with a wide upper part and a narrow lower part, and the lower part is open to pass through the feed inlet and the inside of the storage cavity is communicated.

In a possible implementation manner, the blades are annularly arranged on the outer circumference of the wheel ring structure with the largest radius, and the blades in each layer of the wheel ring structure are uniformly distributed around the axis of the rotating shaft.

In a possible implementation manner, a shaft hole for penetrating through the rotating shaft is formed in the top plate and is communicated with the feeding hole, and the shaft hole is eccentrically arranged on the rotating shaft; wherein, eccentric setting the shaft hole with form between the pivot and dredge the material way, just it is in to dredge the material way discharging pipe one side is followed rotatory impeller direction of rotation width is crescent.

In a possible implementation manner, a connecting base matched with the rotating shaft and the bearing group is arranged between the bottom of the storage barrel body and the top of the driving part; the rotating shaft comprises an upper shaft, a coupler and a lower shaft; the bearing set also comprises an upper high-pressure sealing assembly, an upper bearing assembly, a lower high-pressure sealing assembly and a lower bearing assembly; the upper shaft and the lower shaft are coupled through the coupler, the connecting base is sleeved on the outer sides of the lower shaft, the coupler and part of the upper shaft, and a lower bearing assembly and a lower high-pressure sealing assembly are sequentially arranged between the lower shaft and the bottom plate in a surrounding mode from bottom to top; the upper shaft is positioned at the bottom of the storage barrel body, the upper bearing assembly and the upper high-pressure sealing assembly are sequentially arranged in a surrounding manner from bottom to top, and the top of the upper shaft extends into the storage barrel body; the driving part is a servo motor, the servo motor is provided with an encoder, a closed-loop control system is formed, quick starting and quick stopping can be realized, the lifting load capacity is stronger, quick response of feeding amount change is realized, and the feeding accuracy is improved; the rotating shaft is fixedly provided with a stirring part, and the stirring part is positioned in the feeding tank and above the rotating impeller; still include PLC host system, the pipeline that admits air is in the extroversion from flow control valve and check valve have set gradually in the direction in the storage cavity, PLC host system respectively with the drive division flow control valve electricity is connected.

The beneficial effect of this application: the blades uniformly distributed around the axis of the rotating shaft through the multilayer wheel ring structure replace diffused single-layer blades, and the layered blade arrangement ensures that the discharge pipe is always stably butted with the material storage cavity, the blades and the discharge pipe are always stably and dynamically intersected, so that the feeding quantity is stable, and stable feeding can be realized even when a large-scale feeding device operates under a small load. The problems that the blades of the single-layer divergent structure and the feed opening can completely coincide to block materials, and the feeding amount of the feeding machine is reduced due to the wall effect and the arching of the blades when the opening angle of the blades and the discharge pipe is small are solved.

Moreover, a closed material storage space is formed by the blades and the wheel ring structure, the problems of material leakage and material discharge caused by non-rotating factors such as pressure fluctuation, material static pressure, vibration and the like of the upper blades of the rotary impeller when the rotary impeller rotates are greatly reduced, and the influence of the material leakage on the accurate feeding of the rotary feeding device is reduced. And the blades are fixed between the two adjacent layers of wheel ring structures, and the whole rotating impeller of the rotating impeller has higher structural strength by the fixing mode.

Other features and aspects of the present application will become apparent from the following detailed description of exemplary embodiments, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate exemplary embodiments, features, and aspects of the application and, together with the description, serve to explain the principles of the application.

Fig. 1 shows a schematic structural view of a rotary impeller of an embodiment of the present application;

fig. 2 shows a schematic structural diagram of a main body of the rotary feeder of the embodiment of the application;

FIG. 3 shows a schematic structural view of a rotating impeller according to another embodiment of the present application;

FIG. 4 shows a schematic structural view of a rotating impeller and integral shaft of a third embodiment of the present application;

fig. 5 shows a schematic structural view of a rotary impeller according to a fourth embodiment of the present application;

FIG. 6 is a schematic structural diagram of a top plate, a rotating shaft and a bottom plate of the embodiment of the present application projected in a longitudinal direction;

fig. 7 is a partially enlarged schematic view illustrating the coupling connection between the upper shaft and the lower shaft according to the embodiment of the present application.

Detailed Description

Various exemplary embodiments, features and aspects of the present application will be described in detail below with reference to the accompanying drawings. In the drawings, like reference numbers indicate functionally identical or similar elements. While the various aspects of the embodiments are presented in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

It will be understood, however, that the terms "central," "longitudinal," "lateral," "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the present application or for simplicity of description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be considered limiting of the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments.

Furthermore, in the following detailed description, numerous specific details are set forth in order to provide a better understanding of the present application. It will be understood by those skilled in the art that the present application may be practiced without some of these specific details. In some instances, methods, means, elements and circuits that are well known to those skilled in the art have not been described in detail so as not to obscure the present application.

Fig. 1 shows a schematic structural view of a rotary impeller of an embodiment of the present application; fig. 2 shows a schematic structural view of a main body of the rotary feeder of the embodiment of the present application; FIG. 3 shows a schematic structural view of a rotating impeller according to another embodiment of the present application; FIG. 4 shows a schematic structural view of a rotating impeller and integral shaft of a third embodiment of the present application; fig. 5 shows a schematic structural view of a rotary impeller according to a fourth embodiment of the present application; FIG. 6 is a schematic structural diagram of the top plate, the rotating shaft and the bottom plate projected in the longitudinal direction according to the embodiment of the present application; fig. 7 is a partially enlarged schematic view illustrating the coupling between the upper shaft and the lower shaft according to the embodiment of the present application.

As shown in fig. 1 to 7, the rotary feeder includes: storage barrel 50, the drive division, pivot 100 and rotatory impeller 60, storage barrel 50's inside has the storage cavity, and upper portion is uncovered, the downward intercommunication of the lopsidedness of storage barrel 50 has discharging pipe 70, the drive division is connected with pivot 100 transmission, pivot 100 stretches into inside from storage barrel 50's bottom, pivot 100 and the bearing group phase-match that is located storage barrel 50 bottom, rotatory impeller 60 fixed mounting is on pivot 100, and be located the storage cavity, rotatory impeller 60 is two-layer above from the coaxial and interval wheel ring structure 62 that sets up of middle part to outward flange direction, connect through several blade 61 between the adjacent two-layer wheel ring structure 62, and blade 61 is laid around the center of wheel ring structure 62.

In this embodiment, the multi-layer ring structure 62 and the blades 61 arranged around the axis of the rotating shaft 100 of the ring structure replace the diffused single-layer blades, and the layered blades 61 are arranged to ensure that the discharge pipe 70 is always stably butted with the material storage cavity, the blades 61 and the discharge pipe 70 are always stably and dynamically intersected, the feeding amount is stable, and stable feeding can be realized even when a large-scale feeding device runs under a small load. The problems that the blade 61 of a single-layer divergent structure and a feed opening can completely coincide to block materials, and the feeding quantity of the feeding machine is reduced due to the fact that the blade 61 generates a wall surface effect and is arched when the opening angle of the blade 61 and the opening angle of the discharge pipe 70 are small are solved.

Moreover, the design of multilayer annulus structure 62 is cut apart into a plurality of independent storage spaces with whole rotatory impeller 60, thereby improve the leakproofness in each check storage space, make each check storage space all obtain effective the promotion to blowing material efficiency of discharging pipe 50, directional blowing down in each less storage space of check expects, it is more accurate controllable to blow the material, compare in the individual layer blade, can be reasonable avoid blowing the material air current and blow the material direction unstability down in too big individual layer blade, the more energy of loss and the circumstances such as ejection of compact effect are not good.

It should be particularly emphasized that the rotary feeder of the present application is mainly used for feeding and transporting powder and granular solid materials, and moreover, the blades 61 and the wheel ring structure 62 form a closed material storage space, which greatly reduces the material leakage and discharging problems of the blades 61 on the rotary impeller 60 caused by non-rotational factors such as pressure fluctuation, material static pressure and vibration when the rotary impeller rotates, and reduces the influence of the material leakage on the accurate feeding of the rotary feeder. And the blades 61 are fixed between two adjacent layers of the ring structures 62 in a way that the rotating impeller 60 has high structural strength as a whole. The middle portion of the wheel ring structure 62 with the smallest radius is adapted to pass through the rotating shaft 100 and be directly fixed to the rotating shaft 100.

In one embodiment, the projection of the blades 61 in the direction of the rotation axis 100 is a straight line, and the blades 61 in two adjacent layers of the wheel ring structures 62 are not in the same straight line.

In this embodiment, the projection of the blades 61 in the axial direction of the rotating shaft 100 is linear, that is, the blades 61 are straight, and the projections of the blades 61 in the two adjacent layers of the wheel ring structures 62 in the axial direction of the rotating shaft 100 are not on the same straight line, so that part of the material storage space is always communicated with the material discharge pipe 70, and the feeding amount is stable.

In one embodiment, the rotary vane wheel 60 is a double-layer rotary vane wheel, which includes a rotating shaft 100, a first-layer ring structure, a second-layer ring structure, a first-layer blade 61, a second-layer blade 61, a first-layer storage space formed by the first-layer blade 61, the first-layer ring structure and the second-layer ring structure, and a second-layer storage space formed by the second-layer blade 61, the second-layer ring structure and the storage cavity wall. The first layer of blades 61 and the second layer of blades 61 are arranged at intervals, and the first layer of storage space and the second layer of storage space can adopt equal-length design, namely, the first layer of blades 61 and the second layer of blades 61 have the same length. Because the material storage space is divided into two layers, and the two layers of blades 61 are designed to be alternately and uniformly arranged, the problems of fluctuation of feeding amount and poor precision of a single-layer diffusion type structure are avoided.

In one embodiment, the projection of the blade 61 in the direction of the rotation axis 100 is an arc, and the arc directions of the blades 61 in two adjacent layers of the wheel ring structures 62 are opposite.

In this embodiment, the rotating impellers are in opposite arc directions in the two adjacent layers of the rim structures 62, that is, the rotating impellers in the two adjacent layers of the rim structures 62 are in an "S" shape, and when the rotating impellers rotate along with the rotating shaft 100, the discharge pipe 70 and the blades 61 are always in dynamic intersection, so that the problems of blocking, wall effect, arching and the like are solved, and the rotating feeding device can stably feed materials. In order to improve the strength and the self-flow prevention capability of the S-shaped rotary impeller 60, a ring structure 62 is added to the outermost periphery of the S-shaped rotary impeller.

The present application also provides a two-tier S-turn impeller 60 which will have a torus structure which will strengthen the blades 61 in the center of the blades 61, the straight length of the first tier stock space in its radial direction being the same as this length of the second tier stock space.

In one embodiment, the present application provides a structure in which the rotary impeller 60 is a four-layer rotary impeller for a large rotary feeding device. The rotating blade 61 is composed of four layers of material storage spaces by the blades 61 and a wheel ring structure, the blades 61 on the layer are the central positions of two adjacent blades 61 on the previous layer, and the volume of each layer of material storage space is the same.

In one embodiment, the number of layers of rim structure 62 is between 2 and 4 layers.

In this embodiment, the number of layers of the ring structure 62 is preferably 2-4, which is simpler in design structure and moderate in number of ring structure layers, does not require more material cost, and is suitable for the ring structure 62 to occupy a smaller discharge area, compared with the structure of the single-layer rotating impeller 60.

In one embodiment, the pockets are formed between two adjacent blades 61 in the same tier of the ring structure 62, and the radial length of each tier of the pockets is equal.

In one embodiment, the volume in each cell of the multi-level wheel ring structure 62 is equal.

In this embodiment, the storage space volume of each check equals, changes in the control ejection of compact precision, also makes the rotary feeder's of this application design more reasonable.

In one embodiment, each vane 61 is disposed at a midpoint between two adjacent vanes 61 on adjacent layers.

In one embodiment, the lower-middle section of the feed tank 10 has a bell-mouth structure with a wide upper section and a narrow lower section.

In one embodiment, the number of blades 61 is an even number.

In this embodiment, the number of blades 61 in each layer of the wheel ring structure 62 is about 6-10, so that the blades are divided into a proper number of storage spaces, and the even number of blades 61 can easily divide the circle into equal parts, so that the production and processing of the person skilled in the art are easy.

In one embodiment, the rotating shaft 100 is fixedly installed with a stirring portion 20, the stirring portion 20 is located in the feeding tank 10 and above the rotating impeller 60, and the driving portion is specifically a servo motor 120 driving a speed reducer 110 to drive the rotating shaft 100 for transmission.

In one embodiment, a weighing assembly 130 for weighing the material is installed on an outer wall of the feed tank 10 near the upper portion.

Still include PLC host system, the pipeline 40 that admits air has set gradually flow control valve and check valve in the direction in the storage cavity from the extroversion, and PLC host system is connected with drive division, flow control valve electricity respectively.

To sum up, the working principle of the rotary feeder of the application is: a certain solid material is stored in the feeding tank 10, the driving portion drives the rotating shaft 100 to rotate, the stirring portion 20 stirs the material in the feeding tank 10 and starts to drop the material, the solid material fills the subspaces of the rotating impellers 60 through the feeding holes in the top plate 30, after entering the plurality of material storage spaces in the rotating impellers 60, the solid material rotates along with the rotating shaft 100 along with the rotating impellers 60, after the material storage spaces rotate by a preset angle, the subspaces at the position start to coincide with the pipe openings of the discharging pipes, at the moment, the solid material in the subspaces starts to discharge along with the discharging holes under the action of blowing air in the material storage cavities by the air inlets, and feeding and conveying of the powder and granular solid materials are achieved.

In one embodiment, the storage barrel 50 includes a barrel main body, a top plate 30 and a bottom plate 71, the middle-lower section of the feeding tank 10 is a bell mouth structure with a wide top and a narrow bottom, the barrel main body is a hollow cylinder, and forms a storage cavity with the top plate 30 and the bottom plate 71, the top plate 30 covers the upper portion of the barrel, and a feeding port 31 is opened on one side of the plate surface on the top plate 30, the opening position of the feeding port 31 is opposite to the direction of the discharging pipe 70, and the top plate 30 is opened with an air inlet pipeline 40 from the radial direction inwards, the air inlet pipeline 40 includes a main pipeline opened inwards from the outer side of the top plate 30, and is communicated with the plurality of branch pipelines, and is opened downwards, the bottom plate 71 is installed on the lower portion of the barrel main body, a discharging port communicated with and matched with the shape of the discharging pipe 70 is opened on the bottom plate 71, and the discharging port is correspondingly arranged below the plurality of branch pipelines, the feeding tank 10 is installed on the storage barrel 50, the middle-lower section is a bell mouth structure with a wide top and is communicated with the interior of the storage cavity through the feeding port 31.

In this embodiment, the storage cylinder 50 includes a hollow cylinder body, and a top plate 30 and a bottom plate 71 respectively covering the upper portion and the lower portion of the cylinder body, the main cylinder body, the top plate 30 and the bottom plate 71 together enclose to form a storage cavity, a feeding hole 31 is opened on one side of the surface of the top plate 30, the feeding tank 10 and the storage cylinder 50 are communicated with each other through the feeding hole 31, generally, the structure of the feeding hole 31 is the same as the shape of a part of the rotary impeller 60, that is, the feeding hole 31 is a fan-shaped structure adapted to the rotary impeller 60, so as to maximize the feeding area and efficiency. And the arrangement directions of the feed inlet 31 and the discharge pipe 70 are opposite, so that the discharge pipe 70 can not directly fall out after materials directly enter the material storage barrel body 50 from the feed inlet 31, and the design and the structure are more reasonable.

Further, the feeding tank 10 is of a hopper structure, and the middle-lower section of the feeding tank is a bell mouth with a wide upper part and a narrow lower part and is fixedly installed on the top plate 30 of the storage cylinder 50.

In one embodiment, the air inlet line 40 communicates vertically downward to the air inlet end of the accumulator chamber.

Preferably, the opposite side of feed inlet 31 has not been seted up on roof 30, set up air inlet pipeline 40 from the periphery of roof 30 to the middle part, air inlet pipeline 40 includes main line and branch pipeline, the pipe diameter more than or equal to each branch pipeline's of main line pipe diameter, and the setting direction of main line is the direction that is on a parallel with roof 30 face, a plurality of branch pipelines of main line below intercommunication, and the gas outflow direction of branch pipeline is vertical down, namely branch pipeline upper end and main line intercommunication, whole vertical setting down, and the lower mouth of branch pipeline is located storage barrel 50 directly over with discharging pipe 70 intercommunication position.

In this embodiment, the vertical downward branch pipeline that blows off gas, the multilayer wheel ring structure 62 that cooperates in this application rotary feeder is more reasonable, compares in the direct air inlet mode that adopts the side blow, and the air inlet mode from top to bottom can not blockked by outermost layer structure among the multilayer wheel ring structure 62, avoids influencing blowing material, the discharge efficiency of other layers except outermost layer structure, or the air current is totally by the condition of outermost layer separation.

In one embodiment, the outer circumference of the wheel ring structure 62 with the largest radius is provided with the blades 61 in a surrounding manner, and the blades 61 in each layer of wheel ring structure 62 are uniformly distributed around the axis of the rotating shaft, and the number of the blades 61 is even.

In one embodiment, the top plate 30 is provided with a shaft hole 32 for passing through the rotating shaft, and is communicated with the feeding hole 31, the shaft hole 32 is eccentrically arranged on the rotating shaft, wherein a material dredging channel 33 is formed between the eccentrically arranged shaft hole 32 and the rotating shaft, and the width of the material dredging channel 33 on one side of the discharging pipe 70 is gradually increased along the rotating direction of the rotating impeller 60.

In this embodiment, the top plate 30 is provided with a shaft hole 32 matching with the rotating shaft, the shaft hole 32 is communicated with the feed port 31, in a normal case, the feed port 31 is of a fan-shaped structure, after the middle of the fan-shaped bottom edge is communicated with the shaft hole 32, a fan-shaped structure with a circular hole protruding from the center of the bottom edge is provided, a gap is provided between the shaft hole 32 and the rotating shaft, in a conventional case, the gap between the rotating shaft and the shaft hole 32 is equal, and the rotating feeder conveys solid and particle materials, the gap is easy to accumulate when blanking, and the rotation of the rotating shaft is affected if the gap is too large, so that the rotation of the rotating impeller 60 is affected, and the discharging speed and efficiency are affected finally, and the gap between the shaft hole 32 and the rotating shaft which are arranged deviating from the center shaft of the rotating shaft is unequal, so that the material dredging channel 33 as described in the foregoing is formed, and the material dredging channel 33 is gradually increased along the rotating direction of the rotating impeller 60 from a narrow direction to a wide direction, so that the materials clamped between the shaft hole 32 and the rotating shaft are gradually widened under the rotating effect of the rotating shaft is achieved, and the material feeding is not interfered, and the beneficial effect of the discharging efficiency is not affected.

In one embodiment, a connection base adapted to a rotation shaft and a bearing set is disposed between the bottom of the storage barrel 50 and the top of the driving portion, the rotation shaft includes an upper shaft 81, a coupler 82 and a lower shaft 83, the bearing set further includes an upper high-pressure seal assembly 93, an upper bearing assembly 91, a lower high-pressure seal assembly 94 and a lower bearing assembly 92, the upper shaft 81 and the lower shaft 83 are coupled by the coupler 82, the connection base is sleeved on the outer sides of the lower shaft 83, the coupler 82 and a part of the upper shaft 81, and a lower bearing assembly 92 and a lower high-pressure seal assembly 94 are sequentially disposed between the lower shaft 83 and the bottom plate 71 in a surrounding manner in a bottom-to-top direction, the upper shaft 81 is located at the bottom of the storage barrel 50, the upper bearing assembly 91 and the upper high-pressure seal assembly 93 are sequentially disposed in a surrounding manner in a bottom-to-top direction, the top of the upper shaft 81 extends into the storage barrel 50, the driving portion is a servo motor, a stirring portion 20 is fixedly mounted on the rotation shaft, the stirring portion 20 is located in the rotary impeller 10 and located above the rotary storage barrel 60, and further includes a PLC master control module, a check valve and a flow control valve are sequentially disposed in the storage barrel from outside in the storage chamber, and a flow control valve are electrically connected to the master control pipeline, and are electrically connected to the master control module.

It should be noted that after the transmission part of the rotary feeder is used for a long time, solid particles, dust and the like enter the transmission structure, and the high-pressure sealing assembly and the bearing structure which are easy to break down or are easy to damage need to be replaced frequently;

in one embodiment, a connection base is disposed between the storage barrel 50 and the driving portion, the upper and lower ends of the connection base are open, the connection base is hollow, the connection base covers the rotating shaft, the coupling 82 connects the upper shaft 81 and the lower shaft 83 to form a structure of an integral rotating shaft, the connection base is sleeved on the outer cover of the shaft structure to cover and protect the shaft structure, the inner wall of the connection base is matched with the shaft structure and the high-pressure sealing assembly and the bearing piece disposed at the corresponding position, so as to obtain the technical scheme that the maintenance of the high-pressure sealing assembly and the bearing piece is easy for the implementers in the field, specifically: the connecting base is sleeved outside the lower shaft 83, the coupler 82 and part of the upper shaft 81, a lower bearing assembly 92 and a lower high-pressure sealing assembly 94 are sequentially arranged between the lower shaft 83 and the bottom plate 71 in a surrounding manner from bottom to top, the upper shaft 81 is positioned at the bottom of the storage barrel 50, an upper bearing assembly 91 and an upper high-pressure sealing assembly 93 are sequentially arranged in a surrounding manner from bottom to top, when a technician in the field needs to perform regular maintenance, only the lower part of the shaft 83 is required to be dismounted, the upper shaft 81 is retained in the rotary feeder, and therefore the redundant step that maintenance can be performed without integrally dismounting the rotary feeder is achieved, and the specific dismounting step is as follows: dismantle drive division, connection base, lower high-pressure seal group, lower bearing group 83, lower axle 83 and shaft coupling 82 in proper order, alright will overlap and establish and take off upper high-pressure seal subassembly 93, the upper bearing subassembly 91 in the upper shaft 81 lower part, maintenance, clearance or change or install in the contrary order and can realize the maintenance, improved the maintenance degree of difficulty to bearing unit spare and high-pressure seal subassembly, reduce manpower and artifical cost of maintenance, finally realize reducing maintenance time by a wide margin.

In one embodiment, for the rotary feeder still adopting the integral shaft mode, the maintenance operation that the maintenance personnel in the field need to disassemble the integral mechanism can be avoided by changing the position of the shaft shoulder, as shown in fig. 4, specifically: the shaft shoulder positions are shifted to the positions above the upper high-pressure sealing assembly 93 and the upper bearing assembly 91, and the shaft sections are located at the stepped shaft sections below the upper high-pressure sealing assembly 93 and the upper bearing assembly 91, the radius of each stepped shaft section is smaller from top to bottom, so that troubles that a worker in the field cannot take off the upper high-pressure sealing assembly 93 and the upper bearing assembly 91 when detaching the shaft sections from the shaft are avoided.

The traditional driving mode of the feeding machine is variable frequency motor driving, the driving of the feeding machine is servo motor driving, and the servo motor driving has the following advantages:

1. the precision is high, the closed-loop control of position, speed and moment is realized, and the problem of step motor step loss is solved.

2. The rotating speed is high, the high-speed performance is good, and the rated rotating speed can reach 2000-3000 r/min.

3. The adaptability is good, the overload resistance is strong, the load which is three times of the rated torque can be borne, and the method is particularly suitable for occasions with instant load fluctuation and requirements on quick starting. The method has stronger adaptability to special materials, such as occasions with large water content and large particles and easy material blocking.

4. The low-speed running is stable, and the stepping running phenomenon similar to that of a stepping motor can not be generated during the low-speed running. The method is suitable for occasions with high-speed response requirements.

5. The response is good, and the dynamic corresponding time of motor acceleration and deceleration is short, generally within tens of milliseconds. Is beneficial to the dynamic adjustment of the feeder and the system.

6. Comfort: the heat generation and noise are significantly reduced.

The following table 1 is the feeding amount of current rotary feeder, and for the contrast of adopting this application's rotary feeder's feeding amount data statistics in table 2 below, the batcher that adopts the same specification tests, and only impeller structure uses different impellers, the current conventional single impeller structure of adoption, and the impeller of this application embodiment is double-deck, and every layer of storage space isovolumetric impeller experiment, following two sets of contrast data for the reference:

TABLE 1 statistical data table of feeding amount of existing rotary feeder (single-layer impeller)

Curve of change of feeding quantity with rotation speed of existing rotary feeder (single-layer impeller)

Table 2 table for the statistical data of the feeding amount of the rotary feeder of the present application with double-layer and equal-volume storage space

The change curve of the feeding amount of the rotary feeder with the rotation speed of the rotary feeder with double layers and equal-volume storage space

The foregoing description of the embodiments of the present application has been presented for purposes of illustration and description and is not intended to be exhaustive or limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen in order to best explain the principles of the embodiments, the practical application, or improvements made to the technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.

Claims (10)

1. A rotary feeder is characterized by comprising a storage barrel, a driving part, a rotating shaft and a rotary impeller;

a material storage cavity is formed in the material storage barrel, and a material discharge pipe is obliquely and downwards communicated with one side of the material storage barrel;

the driving part is in transmission connection with the rotating shaft, the rotating shaft extends into the storing barrel body from the bottom of the storing barrel body, and the rotating shaft is matched with a bearing group positioned at the bottom of the storing barrel body;

rotatory impeller fixed mounting be in the pivot, and be located the storage intracavity, rotatory impeller is the wheel ring structure that sets up from middle part to outward flange direction is coaxial and the interval more than two-layer, and is adjacent two-layer connect through the several blade between the wheel ring structure, just the blade winds the center of wheel ring structure is laid.

2. A rotary feeder according to claim 1, wherein the projections of the blades in the direction of the rotation axis are linear, and the blades in two adjacent layers of the ring structures are not in the same line.

3. A rotary feeder according to claim 1, wherein the projections of the blades in the direction of the rotation axis are arc-shaped, and the arc directions of the blades in the wheel ring structures of two adjacent layers are opposite.

4. A rotary feeder according to any one of claims 2 or 3, wherein the number of layers of the rim structure is in the range of 2-4 layers.

5. A rotary feeder according to claim 2, wherein a storage space is formed between two adjacent blades in the same tier of the ring structure, and the storage space of each tier is equal in volume.

6. A rotary feeder according to claim 2, wherein each of the vanes is disposed at a midpoint position of two adjacent vanes in adjacent layers except for the outermost one of the vanes.

7. A rotary feeder according to any one of claims 1-3, 5 or 6, further comprising a feed tank, the storage silo including a silo main body, a top plate and a bottom plate;

the middle-lower section of the feeding tank is of a bell-mouth structure with a wide upper part and a narrow lower part;

the cylinder main body is a hollow cylinder and forms the material storage cavity together with the top plate and the bottom plate in an enclosing manner;

the top plate is covered on the upper part of the barrel, a feed inlet is formed in one side of the plate surface of the top plate, the forming position of the feed inlet is opposite to the direction of the discharge pipe, and an air inlet pipeline is formed in the top plate from the radial direction to the inner side;

the air inlet pipeline comprises a main pipeline which is inwards opened from the outer side of the top plate, and a plurality of branch pipelines which are communicated with the main pipeline and are downwards opened;

the bottom plate is arranged at the lower part of the cylinder main body, a discharge hole which is communicated with and matched with the discharge pipe in shape is formed in the bottom plate, and the discharge hole is correspondingly formed below the branch pipelines;

the feed tank is installed on the storage barrel, the middle-lower section is of a horn mouth structure with a wide upper part and a narrow lower part, and the lower part is open to pass through the feed inlet and the inside of the storage cavity is communicated.

8. A rotary feeder according to claim 7, wherein the blades are annularly arranged on the outer circumference of the wheel ring structure with the largest radius, and the blades in each layer of the wheel ring structure are uniformly distributed around the shaft center of the rotating shaft.

9. A rotary feeder according to claim 7, wherein the top plate is provided with a shaft hole for penetrating the rotary shaft and communicated with the feed inlet, and the shaft hole is eccentrically arranged on the rotary shaft;

wherein, eccentric setting the shaft hole with form between the pivot and dredge the material way, just it is in to dredge the material way discharging pipe one side is followed rotatory impeller direction of rotation width is crescent.

10. A rotary feeder according to claim 7, wherein a connection base adapted to the rotary shaft and the bearing set is arranged between the bottom of the storage barrel and the top of the driving part;

the rotating shaft comprises an upper shaft, a coupler and a lower shaft;

the bearing set also comprises an upper high-pressure sealing assembly, an upper bearing assembly, a lower high-pressure sealing assembly and a lower bearing assembly;

the upper shaft and the lower shaft are coupled through the coupler, the connecting base is sleeved on the outer sides of the lower shaft, the coupler and part of the upper shaft, and a lower bearing assembly and a lower high-pressure sealing assembly are sequentially arranged between the lower shaft and the bottom plate in a surrounding mode from bottom to top;

the upper shaft is positioned at the bottom of the storage barrel body, the upper bearing assembly and the upper high-pressure sealing assembly are sequentially arranged in a surrounding manner from bottom to top, and the top of the upper shaft extends into the storage barrel body;

the driving part is a servo motor;

a stirring part is fixedly arranged on the rotating shaft, is positioned in the feeding tank and is positioned above the rotating impeller;

still include PLC host system, the pipeline of admitting air is in the extroversion flow control valve and check valve have set gradually in the direction of storage cavity, PLC host system respectively with the drive division flow control valve electricity is connected.

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