Disclosure of Invention
The invention aims to: in order to overcome the defects in the prior art, the invention provides the scraping device capable of realizing high precision, high speed and low energy consumption.
The technical scheme is as follows: a scraping device, comprising:
a feed channel for feeding;
the shell is arranged below the feeding channel;
the primary scraping tray is arranged in the shell and positioned below the feeding channel, comprises a plurality of primary fan-shaped feeding areas which are circumferentially arranged along the primary scraping tray and used for receiving blanking in the feeding channel, is configured to be in driving connection with a driving mechanism capable of outputting forward power or reverse power, rotates when the driving mechanism outputs forward power and is used for distributing materials, and stops rotating when the driving mechanism outputs reverse power;
the secondary scraping tray is arranged between the primary scraping tray and the feeding channel, comprises a plurality of secondary fan-shaped feeding areas which are circumferentially arranged along the secondary scraping tray and used for receiving blanking in the feeding channel, the volume of each secondary fan-shaped feeding area is smaller than that of each primary fan-shaped feeding area and used for distributing materials, and is in driving connection with the driving mechanism and configured to rotate forwards along with forward power output of the driving mechanism and rotate reversely along with reverse power output of the driving mechanism;
the discharging channel is arranged at the bottom of the shell, and the discharging channel is arranged in a projection mode in the vertical direction of the feeding channel and used for discharging materials.
Further, the driving mechanism comprises a motor and a main shaft pivoted with the motor, and the secondary scraping tray and the primary scraping tray are pivoted on the main shaft in sequence from top to bottom.
Further, the primary scraping tray is pivoted to the main shaft through a one-way check bearing.
Further, the primary scraping tray is arranged on the main shaft in an eccentric manner, the axis of the primary scraping tray is arranged in a direction away from the discharging channel, the primary scraping tray comprises a plurality of first radiation plates which radiate outwards along the radial direction from the center of the primary scraping tray, the tail ends of the first radiation plates are elastically connected with elastic poking sheets, an elastic poking sheet is formed between every two adjacent first radiation plates, an opening is formed in the bottom of the primary fan-shaped feeding area, and materials enter the discharging channel through the opening.
Further, a plurality of second radiation plates radiate outwards along the radial direction from the center of the secondary scraping tray, a secondary fan-shaped feeding area is formed between the adjacent second radiation plates, and the bottom of the secondary fan-shaped feeding area is arranged to be non-closed.
Further, a material separation plate is further arranged between the primary scraping tray and the secondary scraping tray and used for sealing a section between the primary scraping tray and the secondary scraping tray except the feeding channel and the discharging channel, and the material separation plate is configured to be fixed and does not rotate along with the main shaft.
Further, the material separation plate comprises a blocking block for closing the area between the inner wall of the shell and the secondary scraping tray and between the feeding channel and the discharging channel, and the blocking block is fixedly connected with the inner wall of the shell.
Further, the two blocking blocks are connected through connecting plates, two areas between the feeding channel and the discharging channel are respectively closed, and the connecting plates are sleeved on the main shaft and are in non-driving connection with the main shaft.
Further, an end cover is further arranged at the bottom of the shell, and the end cover is fixedly connected with the shell and used for bearing the bottom end of the spindle.
The beneficial effects are that: according to the scraping device, the traditional spiral feeding is changed into the multi-stage scraping tray feeding, and the materials in the fan-shaped feeding area are distributed by utilizing the rotation of the scraping tray, so that the advantages of compact structure, small occupied space, convenience in installation and transportation and the like are realized.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that, the technical solutions of the embodiments may be combined with each other, but it is necessary to be based on the fact that those skilled in the art can implement the technical solutions, and when the technical solutions are contradictory or cannot be implemented, the technical solutions should be considered that the combination of the technical solutions does not exist, and is not within the scope of protection claimed by the present invention.
Referring to fig. 1 to 7, an embodiment of the scraping device of the present invention comprises a feed channel 4, a housing 1, a primary scraping tray 6, a secondary scraping tray 7 and a discharge channel 5. The feeding channel 4 is used for feeding, preferably adopts an inclined feeding channel 4, can smoothly convey materials into the scraping device, and can also adopt a vertical feeding channel 4. The housing 1 is arranged below the feed channel 4.
The primary scraping tray 6 is arranged in the shell 1 and below the feeding channel 4, and comprises a plurality of primary fan-shaped feeding areas 60 which are circumferentially arranged along the primary scraping tray 6 and used for receiving blanking in the feeding channel 4, wherein the primary scraping tray 6 is configured to be in driving connection with a driving mechanism 2 capable of outputting forward power or reverse power, and rotates to distribute materials when the driving mechanism 2 outputs forward power, and stops rotating when the driving mechanism 2 outputs reverse power.
The secondary scraping tray 7 is arranged between the primary scraping tray 6 and the feeding channel 4, and comprises a plurality of secondary fan-shaped feeding areas 70 which are circumferentially arranged along the secondary scraping tray 7 and are used for receiving blanking in the feeding channel 4, wherein the volume of each secondary fan-shaped feeding area 70 is smaller than that of each primary fan-shaped feeding area 60 and is used for distributing materials, and the secondary scraping tray 7 is in driving connection with the driving mechanism 2 and is configured to rotate positively along with the forward power output of the driving mechanism 2 and rotate reversely along with the reverse power output of the driving mechanism 2. The housing 1 is used to accommodate a primary scraping tray 6 and a secondary scraping tray 7.
The discharging channel 5 is arranged at the bottom of the shell 1, and the discharging channel 5 is arranged in a projection mode in the vertical direction of the feeding channel 4 and is used for discharging materials.
In the working process, when materials with preset weight are required to be distributed, a coarse feeding mode is started, the driving mechanism 2 outputs forward power to drive the primary scraping tray 6 and the secondary scraping tray 7 to jointly rotate, the two scraping trays work simultaneously, feeding is carried out towards the outlet, and the batching rate is greatly improved. When the distribution process is close to the completion of the preset weight, for example, when 95% of the distribution weight is completed, the fine feeding mode is entered, the driving mechanism 2 starts to reversely output power, at the moment, the primary scraping tray 6 stops rotating, the secondary scraping tray 7 reversely rotates, and accordingly a small amount of materials are conveyed to the discharging channel 5, and the weight of the materials distributed to the discharging channel 5 is accurately controlled. The traditional spiral feeding is changed into the multi-stage scraping tray feeding, and the materials in the fan-shaped feeding area are distributed by utilizing the rotation of the scraping tray, so that the advantages of compact structure, small occupied space, convenience in installation and transportation and the like are realized.
Specifically, the driving mechanism 2 includes a motor 21 and a spindle 22 pivotally connected to the motor 21, and the secondary scraping tray 7 and the primary scraping tray 6 are sequentially pivoted to the spindle 22 from top to bottom. Wherein, the motor 21 is a gear motor 21. It should be noted that, in this embodiment, the scraping tray includes the primary scraping tray 6 and the secondary scraping tray 7, and in other embodiments, in order to more accurately control the weight of the dispensed material, it is also possible to continuously set multiple scraping trays, such as three-stage scraping trays and/or four-stage scraping trays, above the secondary scraping tray 7 and below the feeding channel 4 in the vertical direction, and the multiple scraping trays are not limited, and the setting of three-stage scraping trays, four-stage scraping trays or even more is still within the scope of the present invention.
As a further optimization of the present embodiment, the primary scraping tray 6 is pivotally connected to the main shaft 22 through a unidirectional non-return bearing 61, so as to perform a function of rotating only in one direction, and the cost is low, so that the standardized manufacturing is easy.
In other preferred embodiments, the primary scraping tray 6 includes a plurality of first radiation plates 62 radiating radially outwards from the center of the primary scraping tray 6, the tail ends of the first radiation plates 62 are elastically connected with elastic paddles 63, the primary fan-shaped feeding area 60 is formed between adjacent first radiation plates 62, an opening is arranged at the bottom of the primary fan-shaped feeding area 60, and the material enters the discharging channel 5 through the opening. The primary scraping tray 6 is eccentrically arranged on the main shaft 22, and the axis of the primary scraping tray 6 is arranged in a direction away from the discharging channel 5. So, when the primary scraping tray 6 rotates, the spring plectrum close to the feeding channel 4 is pressed by the machine body to be tightly attached to the inner wall of the shell 1, and when the elastic plectrum 63 rotates to be close to the discharging channel 5, the elastic plectrum 63 rebounds due to the reserved space of the eccentric structure, and the process is favorable for discharging materials at the outlet, so that the situation that the materials cannot go down can be well solved.
Specifically, a plurality of second radiation plates 71 radiate radially outwards from the center of the secondary scraping tray 7, the secondary fan-shaped feeding area 70 is formed between adjacent second radiation plates 71, and the bottom of the secondary fan-shaped feeding area 70 is arranged to be non-closed. In the fine feeding mode in the working process, after the materials fall through the feeding channel 4, the materials fill the primary fan-shaped feeding area 60 and then enter the secondary fan-shaped feeding area 70, the secondary fan-shaped feeding area 70 rotates to drive the materials to fill the next primary fan-shaped feeding area 60, and when the materials reach the primary fan-shaped feeding area 60 above the discharging channel 5, the materials distributed in the secondary fan-shaped feeding area 70 fall into the discharging channel 5 to finish fine distribution.
In this embodiment, the number of the primary fan-shaped feeding areas 60 of the primary scraping tray 6 is six, the number of the primary fan-shaped feeding areas may be increased or decreased according to the requirement, and similarly, the number of the secondary fan-shaped feeding areas 70 of the secondary scraping tray 7 may be determined according to the requirement, which is not described herein.
The material separating plate 8 is further arranged between the primary scraping tray 6 and the secondary scraping tray 7, and is used for sealing a region between the primary scraping tray 6 and the secondary scraping tray 7 except the feeding channel 4 and the discharging channel 5, and the material separating plate 8 is configured to be fixed and does not rotate along with the main shaft 22. In this way, in the fine feeding mode, the secondary scraping tray 7 can directly distribute the materials from the feeding channel 4 to the discharging channel 5 without distributing the materials to the primary fan-shaped feeding area 60 between each discharging channel 5 and the feeding channel 4, so that the discharging efficiency is improved.
Specifically, the material separation plate 8 comprises a blocking block 81 for closing the area between the secondary scraping tray 7 and the shell and between the feeding channel 4 and the discharging channel 5, and the blocking block 81 is fixedly connected with the inner wall of the shell 1. The setting of the blocking 81 seals the primary scraping tray 6 and the secondary scraping tray 7 between the feeding channel 4 and the discharging channel 5, so that the materials in the secondary scraping tray 7 are prevented from falling into the primary scraping tray 6, and the materials stably enter the discharging channel 5.
Further, the two blocking blocks 81 are connected through a connecting plate 82 to respectively seal the two areas between the feeding channel 4 and the discharging channel 5, and the connecting plate 82 is sleeved on the main shaft 22 and is in non-driving connection with the main shaft 22. Thus, the fixing property of the blocking piece 81 is improved, and the linear occurrence of the loosening of the blocking piece 81 is avoided. At the same time, the connecting plate 82 provides a bearing at the bottom of the secondary scraping tray 7, so that the materials in the secondary scraping tray 7 are prevented from falling into the primary scraping tray 6.
In some preferred embodiments, an end cover 3 is further disposed at the bottom of the housing 1, and the end cover 3 is fixedly connected to the housing 1 and is used for bearing the bottom end of the spindle 22, so as to improve the service life of the spindle 22 and avoid instability in the rotation process of the spindle 22.
It should be noted that in other embodiments, the number of the discharging passages 5 may be two or more, and the number of the blocking blocks 81 on the corresponding partition plate 8 may be set as required, so that the structural changes still fall within the scope of the present invention.
The foregoing is only a preferred embodiment of the invention, it being noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present invention, and such modifications and adaptations are intended to be comprehended within the scope of the invention.