Feeder and anti-segregation sand bin system using the feeder

Abstract

The present invention relates to a feeder and an anti-segregation sand bin system using the feeder, the feeder comprising a dividing unit, a rotating unit and a driving motor for driving the rotating unit to rotate, the dividing unit is provided with a plurality of fan-shaped dividing cavities with the same volume at intervals along the circumferential direction of the rotating axis of the rotating unit, the upper and lower ends of the fan-shaped dividing cavity are both open structures, the rotating unit comprises an upper blocking plate arranged on the upper side of the dividing unit to cover the upper opening of the fan-shaped dividing cavity and a lower blocking plate arranged on the lower side of the dividing unit to cover the lower opening of the fan-shaped dividing cavity, the upper blocking plate is provided with a fan-shaped feeding port for materials to enter the fan-shaped dividing cavity, the lower blocking plate is provided with a fan-shaped discharging port for materials to flow out of the fan-shaped dividing cavity, the feeding port and the discharging port are staggered with the interval of at least one fan-shaped dividing cavity in the rotation circumferential direction of the rotating unit, when the feeder is applied to a sand bin system, the problem of material segregation in the sand bin can be effectively improved.

Description

Technical Field

[0001] The invention relates to a feeder and an anti-segregation sand bin system using the feeder. Background Art

[0002] At present, in the production process of the mixing station, materials are transported to the receiving sand bin through the feeder, and the unmixed materials need to be stored in the receiving sand bin. The existing feeder has only one discharge port, and the material has only one drop point in the receiving sand bin. Since the height of the receiving sand bin is relatively large, the material falling into the receiving sand bin from the feeder discharge port will form a cone angle with a high middle and low surroundings in the receiving sand bin. When subsequent materials fall on the conical inclined surface, materials with larger particles will roll along the inclined surface to the surroundings of the receiving sand bin, causing the materials in the receiving sand bin to segregate. Material segregation will cause a large difference in the coarseness and fineness ratio of each plate of material entering the mixer, thereby reducing the quality of the mortar. Summary of the invention

[0003] The object of the present invention is to provide a feeder that feeds evenly in the circumferential direction, so as to effectively improve the problem of material segregation in the sand bin when the above feeder is used in a sand bin system; the object of the present invention is also to provide an anti-segregation sand bin system to improve the problem of material segregation in the sand bin.

[0004] The feeder of the present invention adopts the following technical solution:

[0005] The feeder includes a material dividing unit, a rotating unit and a driving motor for driving the rotating unit to rotate, the material dividing unit is provided with a plurality of fan-shaped material dividing cavities with the same volume at circumferential intervals along the rotating axis of the rotating unit, the upper and lower ends of the fan-shaped material dividing cavity are both open structures, the rotating unit includes an upper blocking plate arranged on the upper side of the material dividing unit to cover the upper opening of the fan-shaped material dividing cavity and a lower blocking plate arranged on the lower side of the material dividing unit to cover the lower opening of the fan-shaped material dividing cavity, the upper blocking plate is provided with a fan-shaped feed inlet for materials to enter the fan-shaped material dividing cavity, the lower blocking plate is provided with a fan-shaped discharge port for materials to flow out of the fan-shaped material dividing cavity, the feed inlet and the discharge port are staggered by at least one fan-shaped material dividing cavity in the circumferential direction of rotation of the rotating unit.

[0006] The beneficial effect of the present invention is that when in use, when there is material above the upper material blocking plate, the driving motor of the feeder is started, and the driving motor drives the rotating unit to rotate at a uniform speed. At a moment, only the upper end openings of some fan-shaped dividing cavities are connected with the feed port of the upper material blocking plate, and the material enters the fan-shaped dividing cavity of the dividing unit through the feed port, and the upper end openings of the remaining fan-shaped dividing cavities are blocked by the upper material blocking plate, and cannot be fed; similarly, at this moment, only the lower end openings of some fan-shaped dividing cavities are connected with the discharge port of the lower material blocking plate, and the material in the corresponding fan-shaped dividing cavities is discharged through the discharge port, and the lower end openings of the remaining fan-shaped dividing cavities are blocked by the lower material blocking plate, and cannot be discharged. In this way, during the rotation of the rotating unit, material distribution in the circumferential direction can be achieved, and at the same time, the amount of material contained in each sector annular distribution cavity is ensured to be the same, so that the amount of material falling in the circumferential direction of the feeder is also the same, and finally the feeder can be uniformly fed in the circumferential direction, thereby forming multiple evenly distributed dropping points. When the above feeder is applied to the sand bin system, the problem of material segregation in the sand bin can be effectively improved.

[0007] To facilitate the design and processing of the rotating unit, the projection of the feed port on the lower baffle plate and the discharge port in this scheme are arranged in a centrally symmetrical manner along the rotation axis of the rotating unit. The setting of the positions of the feed port and the discharge port not only ensures that the fan-shaped annular distribution cavity is filled with the same amount of material during use, but also eliminates the complex design of the positions of the feed port and the discharge port, thereby facilitating the design and processing of the rotating unit.

[0008] In order to facilitate the material to enter the fan-shaped annular distribution cavity through the feed port, and to facilitate the material to flow out of the fan-shaped annular distribution cavity from the discharge port, the central angle of each fan-shaped annular distribution cavity in this solution is smaller than the central angle of the feed port.

[0009] In order to simplify the structure of the material distribution unit, the material distribution unit in the present embodiment includes an inner annular partition and an outer annular partition coaxially arranged, and a cavity partition radially connected between the inner annular partition and the outer annular partition. A plurality of cavity partitions are evenly distributed along the circumferential interval of the rotation axis of the rotating unit, and each fan-shaped material distribution cavity is surrounded by an inner annular partition, an outer annular partition and two adjacent cavity partitions.

[0010] In order to simplify the structure of the rotating unit, in the present embodiment, the upper material blocking plate and the lower material blocking plate are both disc structures with fan-shaped openings. The fan-shaped opening on the upper material blocking plate constitutes the feed port, and the fan-shaped opening on the lower material blocking plate constitutes the discharge port. The center of the disc structure is set on the rotation axis of the rotating unit. The upper material blocking plate and the lower material blocking plate are connected by an intermediate connecting part. The intermediate connecting part is a hollow structure and is located in the inner hole formed by the inner annular partition plate. The intermediate connecting part is drivingly connected to the output shaft of the drive motor.

[0011] In order to simplify the structure of the rotating unit, the lower material blocking plate and the middle connecting part in this solution are an integrated structure, and the upper material blocking plate and the middle connecting part are detachably connected.

[0012] In order to facilitate the connection between the feeder and the feeding device and the receiving device, the upper and lower sides of the outer annular partition in this scheme are respectively provided with an upper flange plate for connecting with the feeding device and a lower flange plate for connecting with the receiving device. The upper flange plate and the lower flange plate are both provided with positioning steps for positioning the corresponding material baffle plates. The upper flange plate and the lower flange plate facilitate the connection between the feeder and the feeding device and the receiving device, and the positioning steps can also facilitate the installation and positioning of the material baffle plate.

[0013] The anti-segregation sand bin system of the present invention adopts the following technical solutions:

[0014] The anti-segregation sand bin system comprises a feeding hopper, a receiving sand bin and a feeder arranged between the feeding hopper and the receiving sand bin, the feeding device comprising a distributing unit, a rotating unit and a driving motor for driving the rotating unit to rotate, the distributing unit is provided with a plurality of fan-shaped distributing cavities of the same volume, and the upper and lower ends of the fan-shaped distributing cavities are both open structures, the rotating unit comprises an upper baffle plate arranged on the upper side of the distributing unit to cover the upper end opening of the fan-shaped distributing cavity and a lower baffle plate arranged on the lower side of the distributing unit to cover the lower end opening of the fan-shaped distributing cavity, the upper baffle plate is provided with a fan-shaped feeding port for supplying sand material into the fan-shaped distributing cavity, and the lower baffle plate is provided with a fan-shaped distributing port for supplying sand material to flow out of the fan-shaped distributing cavity, the feeding port and the distributing port are staggered at least one fan-shaped distributing cavity in the rotation circumferential direction of the rotating unit, the feeding port is connected with the feeding hopper, and the distributing port is connected with the receiving sand bin.

[0015] The beneficial effect of the present invention is that when in use, when there is material above the upper material blocking plate, the driving motor of the feeder is started, and the driving motor drives the rotating unit to rotate at a uniform speed. At a moment, only the upper end openings of some fan-shaped material distribution chambers are connected with the feeding port of the upper material blocking plate, and the sand material enters the fan-shaped material distribution chamber of the distribution unit through the feeding port, and the upper end openings of the remaining fan-shaped material distribution chambers are blocked by the upper material blocking plate and cannot be fed; similarly, at this moment, only the lower end openings of some fan-shaped material distribution chambers are connected with the discharging port of the lower material blocking plate, and the sand material in the corresponding fan-shaped material distribution chamber is discharged through the discharging port, and the lower end openings of the remaining fan-shaped material distribution chambers are blocked by the lower material blocking plate and cannot be discharged. In this way, during the rotation of the rotating unit, it can not only achieve material distribution in the circumferential direction, but also ensure that the amount of sand contained in each sector annular distribution cavity is the same, so that the amount of sand falling in the circumferential direction of the feeder is also the same, and finally achieve uniform feeding in the circumferential direction, so that a plurality of evenly distributed dropping points can be formed in the receiving sand bin, which can effectively improve the problem of sand segregation in the sand bin.

[0016] To facilitate the design and processing of the rotating unit, the projection of the feed port on the lower baffle plate and the discharge port in this scheme are arranged in a centrally symmetrical manner along the rotation axis of the rotating unit. The setting of the positions of the feed port and the discharge port can eliminate the complicated design of the positions of the feed port and the discharge port while ensuring that the fan-shaped annular material distribution cavity is filled with sand during use, thereby facilitating the design and processing of the rotating unit.

[0017] In order to facilitate the sand material to enter the fan-shaped annular distribution cavity through the feed port and to facilitate the sand material to flow out of the fan-shaped annular distribution cavity from the discharge port, the central angle of each fan-shaped annular distribution cavity in this solution is smaller than the central angle of the feed port.

[0018] In order to simplify the structure of the material distribution unit, the material distribution unit in the present embodiment includes an inner annular partition and an outer annular partition coaxially arranged, and a cavity partition radially connected between the inner annular partition and the outer annular partition. A plurality of cavity partitions are evenly distributed along the circumferential interval of the rotation axis of the rotating unit, and each fan-shaped material distribution cavity is surrounded by an inner annular partition, an outer annular partition and two adjacent cavity partitions.

[0019] In order to simplify the structure of the rotating unit, in the present embodiment, the upper material blocking plate and the lower material blocking plate are both disc structures with fan-shaped openings. The fan-shaped opening on the upper material blocking plate constitutes the feed port, and the fan-shaped opening on the lower material blocking plate constitutes the discharge port. The center of the disc structure is set on the rotation axis of the rotating unit. The upper material blocking plate and the lower material blocking plate are connected by an intermediate connecting part. The intermediate connecting part is a hollow structure and is located in the inner hole formed by the inner annular partition plate. The intermediate connecting part is drivingly connected to the output shaft of the drive motor.

[0020] In order to simplify the structure of the rotating unit, the lower material blocking plate and the middle connecting part in this solution are an integrated structure, and the upper material blocking plate and the middle connecting part are detachably connected.

[0021] In order to facilitate the connection between the feeder and the feeding hopper and the receiving sand bin, the upper and lower sides of the outer annular partition in this scheme are respectively provided with an upper flange connected to the feeding hopper and a lower flange connected to the receiving sand bin. The upper flange and the lower flange are both provided with positioning steps for positioning the corresponding baffle plates. The upper flange and the lower flange facilitate the connection between the feeder and the feeding hopper and the receiving sand bin, and the positioning steps can also facilitate the installation and positioning of the baffle plate.

[0022] In order to further improve the problem of sand segregation in the receiving sand bin, a distribution hopper coaxial with the rotating unit of the feeder is provided between the receiving sand bin and the feeder in this scheme, a distribution cone is coaxially arranged in the distribution hopper, and a plurality of distribution plates evenly distributed along the circumference of the distribution cone are connected between the bucket wall of the distribution hopper and the distribution cone. The distribution hopper, the distribution cone and the plurality of distribution plates form a plurality of distribution cavities evenly distributed along the circumference of the distribution cone, and each distribution cavity corresponds one-to-one to the fan-shaped distribution cavity of the feeder. A plurality of distribution holes evenly distributed circumferentially on the bottom of the distribution hopper and connected one-to-one to the distribution cavities are provided to allow the sand in the distribution cavity to flow out from the corresponding distribution holes to the receiving sand bin. The distribution cone allows the sand to slide evenly along the conical surface of the distribution cone when it enters the distribution hopper. The distribution cavity corresponding to the fan-shaped distribution cavity and the distribution holes corresponding to the distribution cavity enable the sand to be evenly distributed inside the receiving sand bin, further improving the problem of sand segregation in the receiving sand bin.

[0023] To facilitate the fixation of the distribution hopper and distribution cone, a lower flange connected to the distribution hopper is provided on the lower side of the outer annular partition of the feeder in this solution, and the rotating unit of the feeder is fixed to the upper side of the distribution cone through a thrust bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of a specific embodiment of the feeder of the present invention;

[0025] Figure 2 for Figure 1 The structural diagram of the middle material distribution unit;

[0026] Figure 3 for Figure 1 Structural schematic diagram of the middle and upper baffle plate;

[0027] Figure 4 for Figure 1 Structural schematic diagram of the middle and lower baffle plates;

[0028] Figure 5 It is a structural schematic diagram of a specific embodiment of the anti-segregation sand bin system of the present invention;

[0029] Figure 6 for Figure 5 Structural diagram of the middle feeder;

[0030] Figure 7 for Figure 5 Schematic diagram of the structure of the middle material distribution device (the material distribution holes are not shown).

[0031] In the figure: 1-feeding hopper; 2-distributing hopper; 3-feeder; 4-receiving sand bin; 5-discharging pipe; 6-valve; 7-feeding port; 8-discharging port; 9-motor; 10-thrust ball bearing; 11-lubricating device; 12-reducing machine; 13-connecting plate; 14-output shaft; 31-upper material blocking plate; 32-lower material blocking plate; 33-inner annular partition; 34-outer annular partition; 35-cavity partition; 36-fan annular material distribution cavity; 37-upper flange; 38-lower flange; 39-sleeve structure; 21-distributing cone; 22-distributing plate; 23-reducing machine connecting hole; 24-lower flange connecting hole; 100-feeding device; 200-receiving device; 371-upper positioning step; 381-lower positioning step. DETAILED DESCRIPTION

[0032] The embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0033] The specific embodiment of the feeder of the present invention is as follows Figure 1 As shown, the feeder includes a material distribution unit, a rotating unit and a reduction motor for driving the rotating unit to rotate. The reduction motor includes a motor 9 and a reducer 12 that are transmission-connected. The reduction motor in this embodiment is the driving motor.

[0034] like Figure 2 As shown, the material distribution unit includes an inner annular partition plate 33, an outer annular partition plate 34 and a cavity partition plate 35 connected between the two annular partition plates, and the inner annular partition plate 33, the outer annular partition plate 34 and the two adjacent cavity partition plates 35 form a fan-shaped material distribution cavity 36. Among them, the centers of the inner annular partition plate 33 and the outer annular partition plate 34 are set on the rotation axis of the rotating unit. In this embodiment, there are twelve cavity partition plates 35 evenly distributed along the circumferential interval of the inner annular partition plate 33, and the corresponding fan-shaped material distribution cavities 36 are also twelve, and the central angle of each fan-shaped material distribution cavity 36 is 30°, and the volume of each fan-shaped material distribution cavity 36 is equal and both ends are open structures.

[0035] like Figure 1 As shown, the rotating unit includes an upper material blocking plate 31 arranged on the upper side of the material distributing unit and a lower material blocking plate 32 arranged on the lower side of the material distributing unit. The upper material blocking plate 31 and the lower material blocking plate 32 in this embodiment are both disc structures with fan-shaped openings, and the centers of the upper material blocking plate 31 and the lower material blocking plate 32 are both arranged on the rotating axis of the rotating unit. The fan-shaped opening of the upper material blocking plate 31 constitutes a feed port 7 for materials to enter the fan-shaped material distributing cavity 36, and the fan-shaped opening of the lower material blocking plate 32 constitutes a discharge port 8 for materials to flow out of the fan-shaped material distributing cavity 36.

[0036] like Figure 3 and Figure 4As shown, the projection of the feed port 7 on the lower baffle plate 32 is arranged centrally symmetrically with the discharge port 8 along the rotation axis of the rotating unit, and the central angles of the feed port 7 and the discharge port 8 are both 90°, so that the feed port 7 and the discharge port 8 are staggered by three fan-shaped distribution chambers 36 in the rotation circumference of the rotating unit, avoiding the same fan-shaped distribution chamber 36 from being connected to the feed port 7 and the discharge port 8 at the same time.

[0037] like Figure 2 As shown, the upper material stop plate 31 and the lower material stop plate 32 in this embodiment are fixedly connected by an intermediate connecting portion, and the lower material stop plate 32 and the intermediate connecting portion are welded to form an integrated structure, and the upper material stop plate 31 and the intermediate connecting portion are connected by bolts. The intermediate connecting portion in this embodiment is a hollow structure and is in the inner hole formed by the inner annular partition plate 33, and the intermediate connecting portion is fixedly connected to the output shaft 14 of the reducer 12, so as to drive the rotating unit to rotate through the output shaft 14 of the reducer 12.

[0038] The intermediate connection part includes a sleeve structure 39 which is coaxially fixedly connected to the output shaft 14 of the reducer 12. A connecting plate 13 is welded and fixed in the middle of the sleeve structure 39. The connecting plate 13 is provided with a connecting hole. The middle part of the output shaft 14 is provided with a threaded hole extending along the axial direction of the output shaft 14. The reducer 12 and the intermediate connection part are fixedly connected by screws which are installed in the connecting hole and threadedly connected to the threaded hole.

[0039] When there is material above the upper blocking plate 31, the reduction motor starts, driving the rotating unit to rotate at a uniform speed. At a certain moment, only the upper end openings of some fan-shaped ring-shaped material distribution chambers 36 are connected to the feed port 7, and the material enters the fan-shaped ring-shaped material distribution chamber 36 of the distribution unit through the feed port 7, and the upper end openings of the remaining fan-shaped ring-shaped material distribution chambers 36 are blocked by the upper blocking plate 31, and cannot be fed; similarly, at this moment, only the lower end openings of some fan-shaped ring-shaped material distribution chambers 36 are connected to the discharge port 8, and the material in the corresponding fan-shaped ring-shaped material distribution chambers 36 is discharged through the discharge port 8, and the lower end openings of the remaining fan-shaped ring-shaped material distribution chambers 36 are blocked by the lower blocking plate 32, and cannot be discharged. In this way, during the rotation of the rotating unit, the material distribution in the circumferential direction can be realized, and at the same time, the amount of material contained in each fan-shaped ring-shaped material distribution chamber 36 is ensured to be the same, so that the amount of material falling in the circumferential direction of the feeder is also the same, and finally the uniform feeding of the feeder in the circumferential direction is realized. When used specifically, each sector annular material distribution chamber 36 can be filled with materials by controlling the rotation speed of the reducer 12. Also, each sector annular material distribution chamber 36 can be filled with a set amount of materials by controlling the rotation speed of the reducer 12.

[0040] like Figure 1As shown, considering that the upper and lower sides of the feeder usually need to be connected to the corresponding feeding device 100 and the receiving device 200, the upper and lower sides of the outer annular partition 34 of this embodiment are respectively provided with an upper flange 37 and a lower flange 38. When in use, the upper flange 37 is connected to the feeding device 100, and the lower flange 38 is connected to the receiving device 200.

[0041] The upper flange 37 and the lower flange 38 are respectively provided with an upper positioning step 371 and a lower positioning step 381 for positioning the corresponding material blocking plate. The receiving device 200 in this embodiment has an inner part and an outer part coaxial with the inner part. The upper end of the receiving device 200 is open for material to flow in; the inner part and the outer part form a bottom-closed structure, and the material flows out from the discharge port 8 of the feeder and falls uniformly into the receiving device 200 along the circumference of the feeder.

[0042] Specifically, the reducer 12 is provided with a reducer mounting hole, the inner part of the material receiving device 200 is provided with a reducer connecting hole corresponding to the reducer mounting hole, and the inner part of the material receiving device 200 is fixedly connected to the reducer 12 by bolts installed in the reducer mounting hole and the reducer connecting hole; the lower flange 38 is provided with a lower flange hole, and the outer part of the material receiving device 200 is provided with a lower flange connecting hole corresponding to the lower flange hole, and the outer part of the material receiving device 200 is fixedly connected to the lower flange 38 by bolts installed in the lower flange connecting hole and the lower flange hole.

[0043] It should be noted that there should be a certain interval between the upper positioning step 371 of the upper flange 37 and the upper material stop plate 31, and between the lower positioning step 381 of the lower flange 38 and the lower material stop plate 32, so as to prevent the upper flange 37 and the lower flange 38 from affecting the rotation of the rotating unit. It should be noted that the upper flange 37, the lower flange 38, the outer annular partition 34, the cavity partition 35, and the inner annular partition 33 in this embodiment are welded as a whole to reduce the number of parts of the feeder and facilitate the installation and use of the feeder.

[0044] The central angles of the feed port 7 and the discharge port 8 are both 90°, and the central angle of the fan-shaped material distribution chamber 36 is 30°. In addition, in this embodiment, the radial dimensions of the upper and lower material blocking plates 31 and 32 are larger than the radial dimensions of the outer annular partition plate 34, and the radial dimensions of the feed port 7 and the discharge port 8 are larger than the radial dimensions of the upper and lower openings of the fan-shaped material distribution chamber 36, so that the openings of the feed port 7 and the discharge port 8 are larger than the opening of the fan-shaped material distribution chamber 36, which facilitates the material to enter the fan-shaped material distribution chamber 36 through the feed port 7, and facilitates the material to flow out of the fan-shaped material distribution chamber 36 through the discharge port 8.

[0045] When installing the feeder, first fix the reducer 12 to the inner part of the receiving device 200 by bolts, and at the same time fix the outer part of the receiving device 200 to the lower flange 38 by bolts; then, the thrust ball bearing 10 and the sleeve structure 39 are sequentially mounted on the output shaft 14 on the upper side of the inner part of the receiving device 200, and the connecting plate 13 is fixed to the output shaft 14 by screws; then, the distributing unit is mounted on the outer side of the middle connecting part, and then, the upper material blocking plate 31 is fixed to the middle connecting part by bolts; finally, the feeding device 100 is fixed to the upper flange 37 by bolts to complete the assembly of the feeder.

[0046] To ensure reliable lubrication of the thrust ball bearing 10, the anti-segregation sand bin system further includes a lubrication device 11 for providing lubricating grease to the thrust ball bearing 10. In other embodiments, the thrust ball bearing 10 may also be replaced by an angular contact ball bearing or other thrust bearings that can withstand both axial and radial forces.

[0047] The projection of the feed port 7 on the lower baffle plate 32 and the discharge port 8 in this embodiment are arranged in a central symmetric manner along the rotation axis of the rotating unit, and the feed port and the discharge port are staggered by three fan-shaped distribution cavities 36 in the rotation circumferential direction of the rotating unit; in other embodiments, the feed port and the discharge port may be staggered by only one, two or more than four fan-shaped distribution cavities along the rotation axis of the rotating unit.

[0048] The central angle of the fan-shaped material distribution cavity 36 in this embodiment is one third of the central angle of the feed port 7; in other embodiments, the central angle of each fan-shaped material distribution cavity may be one half of the central angle of the feed port, or the central angle of the fan-shaped material distribution cavity is equal to the central angle of the feed port.

[0049] In this embodiment, the central angles of the feed port 7 and the discharge port 8 are the same. In other embodiments, the central angles of the feed port and the discharge port may be different.

[0050] In this embodiment, twelve fan-shaped annular material distribution cavities 36 are provided on the rotating unit. In other embodiments, the number of fan-shaped annular material distribution cavities can be set as needed. The rotating unit can have more than three but less than twelve or more than thirteen fan-shaped annular material distribution cavities evenly distributed along the circumferential direction.

[0051] The material distribution unit in this embodiment is composed of an inner annular partition 33, an outer annular partition 34 and a cavity partition 35 welded together. In other embodiments, the material distribution unit may also be composed of a block structure with multiple through holes. In this case, the fan-shaped material distribution cavity is surrounded by the hole walls of the through holes.

[0052] The upper material blocking plate 31 and the lower material blocking plate 32 in the present embodiment are both disc structures with fan-shaped openings. In other embodiments, the upper material blocking plate and the lower material blocking plate may be plate structures with fan-shaped openings.

[0053] The upper material blocking plate 31 and the lower material blocking plate 32 in this embodiment are connected by an intermediate connecting portion and are located in the inner hole formed by the inner annular partition 33. In other embodiments, the intermediate connecting portion can be connected to the outer periphery of the upper material blocking plate and the lower material blocking plate, and the material dividing unit is arranged in the space enclosed by the intermediate connecting portion and the upper material blocking plate and the lower material blocking plate.

[0054] The lower material blocking plate 32 and the middle connecting part in this embodiment are an integrated structure, and the upper material blocking plate 31 and the middle connecting part are detachably connected; in other embodiments, the upper and lower material blocking plates and the middle connecting part can be separately arranged, and the lower material blocking plate and the upper material blocking plate are fixedly connected to the middle connecting part by bolts or screws; or the upper material blocking plate and the middle connecting part are an integrated structure, and the lower material blocking plate and the middle connecting part are detachably connected.

[0055] In this embodiment, the radial dimensions of the upper and lower material blocking plates 31 and 32 are larger than the radial dimensions of the outer annular partition 34, and the radial dimensions of the feed port and the discharge port are larger than the radial dimensions of the upper and lower end openings of the fan-shaped annular material distribution cavity; in other embodiments, the radial dimensions of the upper and lower material blocking plates may be equal to the radial dimensions of the outer annular partition. At this time, the upper and lower material blocking plates are configured as plate-like structures with notches, and the feed port and the discharge port are composed of the notches of the corresponding plate-like structures.

[0056] In this embodiment, an upper flange 37 and a lower flange 38 are respectively provided on the upper and lower sides of the outer annular partition 34, and positioning steps for positioning the corresponding material blocking plate are respectively provided on the upper flange 37 and the lower flange 38. In other embodiments, flanges may not be provided on the upper and lower sides of the outer annular baffle, in which case the upper and lower sides of the outer annular baffle can be fixed to the feeding device and the receiving device by welding; positioning steps may not be provided on the upper flange and the lower flange, in which case the upper end face of the upper flange is flush with the upper end face of the outer annular baffle, and the lower end face of the lower flange is flush with the lower end face of the outer annular baffle; the feeding device, the receiving device and the feeder may not be connected, and the output shaft of the reducer is directly fixedly connected to the connecting plate of the middle connecting part, the dividing unit is directly placed on the lower baffle plate through the middle connecting part, or the dividing unit is fixed between the upper baffle plate and the lower baffle plate by a fixed bracket arranged on the periphery of the feeder, and the feeding device and the receiving device are fixedly arranged on the upper and lower sides of the feeder by separate brackets; or only one of the upper flange and the lower flange is provided on the outer annular baffle.

[0057] The material receiving device 200 in this embodiment has an inner part and an outer part coaxial with the inner part. In other embodiments, the material receiving device may be a cylinder with an open upper end, and the material falls at the bottom of the cylinder.

[0058] The specific embodiment of the anti-segregation sand bin system of the present invention is as follows: Figure 5 and Figure 6 As shown, the anti-segregation sand bin system includes a feeding hopper 1, a receiving sand bin 4, and a feeder 3 arranged between the feeding hopper 1 and the receiving sand bin 4. The feeder 3 in this embodiment has the same structure as the feeder described in the specific embodiment of the above-mentioned feeder, and will not be repeated. The feeding hopper 1 in this embodiment is equivalent to the feeding device in the specific embodiment of the above-mentioned feeder, and the receiving sand bin 4 is equivalent to the receiving device in the specific embodiment of the above-mentioned feeder. The receiving sand bin 4 in this embodiment is not connected to the feeder 3, and a distribution hopper 2 coaxially arranged with the lower baffle plate 32 is provided between the receiving sand bin 4 and the feeder 3. When in use, the sand passes through the feeding hopper 1, is divided by the feeder 3, and then enters the receiving sand bin 4 through the distribution hopper 2.

[0059] like Figure 7 As shown, a distribution cone 21 is coaxially arranged in the distribution hopper 2, and twelve distribution plates 22 are fixedly connected between the bucket wall of the distribution hopper 2 and the distribution cone 21. The bucket wall of the distribution hopper 2, the distribution cone 21 and the twelve distribution plates 22 surround twelve distribution cavities evenly distributed in the circumferential direction, and each distribution cavity corresponds to the fan-shaped distribution cavity 36 of the feeder 3. Twelve distribution holes (not shown in the figure) corresponding to the distribution cavities are evenly distributed in the circumferential direction on the bottom of the distribution hopper 2, so that the sand in the distribution cavity can flow out from the corresponding distribution holes to the receiving sand bin 4. The distribution hopper 2, the distribution cone 21 and the distribution plates 22 together constitute a distribution device. The sand flowing out of the discharge port 7 of the feeder 3 flows out from the distribution holes after passing through the distribution cavity and enters the receiving sand bin 4, so that multiple evenly distributed drop points can be formed in the receiving sand bin 4, which can effectively improve the problem of sand segregation in the receiving sand bin 4.

[0060] The reducer 12 is provided with a reducer mounting hole, the material distribution cone 21 is provided with a reducer connecting hole 23 corresponding to the reducer mounting hole, and the material distribution cone 21 is fixedly connected to the reducer 12 by bolts installed in the reducer mounting hole and the reducer connecting hole 23; the lower flange 38 is provided with a lower flange hole, and the material distribution hopper 2 is provided with a lower flange connecting hole 24 corresponding to the lower flange hole, and the material distribution hopper 2 is fixedly connected to the lower flange 38 by bolts installed in the lower flange connecting hole 24 and the lower flange hole.

[0061] like Figure 5 As shown, a plurality of discharge pipes 5 are evenly distributed at intervals along the circumference of the receiving sand bin 4 at the bottom of the receiving sand bin 4, and a valve 6 is provided on each discharge pipe 5. When the sand is discharged from the receiving sand bin 4, the valves 6 are opened in sequence along the clockwise or counterclockwise direction of the receiving sand bin 4 to discharge the material from the discharge pipe 5. Specifically, when the sand is discharged from the receiving sand bin 4, only one valve 6 is opened at a time, and the opening time of each valve 6 is equal. When the next valve 6 needs to be opened, the previously opened valve 6 is closed first, so that the amount of sand discharged from each discharge pipe 5 is equal, and the sand in the receiving sand bin 4 is uniformly lowered, which improves the problem of segregation of the remaining sand in the receiving sand bin.

[0062] When installing the feeder 3 in the anti-segregation sand bin system, first, the reducer 12 is fixedly connected to the distribution cone 21 by bolts; at the same time, the distribution hopper 2 is fixedly connected to the lower flange 38 by bolts. Then, the thrust ball bearing 10 and the sleeve structure 39 are sequentially sleeved on the output shaft 14 on the upper side of the distribution cone 21, and the connecting plate 13 is fixedly connected to the output shaft 14 by screws; then, the material distribution unit is sleeved on the outside of the middle connection part, and then, the upper material blocking plate 31 is fixedly connected to the middle connection part by bolts; finally, the feeder 1 is fixedly connected to the upper flange 37 on the upper side of the outer annular partition 34 by bolts, and the installation of the feeder 3 in the anti-segregation sand bin system is completed. The distribution hole in this embodiment can be formed by a distribution pipe welded and fixed at the bottom of the distribution hopper 2. The distribution cone 21 in this embodiment is welded and fixed to the distribution hopper 2, and the feeder 3 is fixedly connected to the distribution hopper 2, and the distribution hopper 2 supports and fixes the feeder 3.

[0063] When there is material above the upper material blocking plate 31, the reduction motor starts to drive the rotating unit to rotate at a uniform speed. At a moment, only the upper end openings of some fan-shaped material distribution chambers 36 are connected with the feed port 7, and the sand enters the fan-shaped material distribution chamber 36 of the distribution unit through the feed port 7, and the upper end openings of the remaining fan-shaped material distribution chambers 36 are blocked by the upper material blocking plate 31, and material cannot be fed; similarly, at this moment, only the lower end openings of some fan-shaped material distribution chambers 36 are connected with the discharge port 8, and the sand in the corresponding fan-shaped material distribution chambers 36 are discharged through the discharge port 8, and the lower end openings of the remaining fan-shaped material distribution chambers 36 are blocked by the lower material blocking plate 32, and material cannot be discharged. In this way, during the rotation of the rotating unit, it is possible to achieve material distribution in the circumferential direction while ensuring that the amount of sand contained in each sector annular distribution cavity 36 is the same, and the amount of sand falling in the circumferential direction of the feeder 3 is also the same, ultimately achieving uniform feeding in the circumferential direction, thereby forming a plurality of evenly distributed dropping points, which can effectively improve the problem of sand segregation in the receiving sand bin 4.

[0064] It should be noted that, in order to ensure reliable lubrication of the thrust ball bearing 10, the anti-segregation sand bin system also includes a lubrication device 11 for providing lubricating grease to the thrust ball bearing 10. In other embodiments, the thrust ball bearing 10 can also be replaced by an angular contact ball bearing or other thrust bearings that can withstand both axial and radial forces.

[0065] The upper material blocking plate 31 and the lower material blocking plate 32 in this embodiment are connected by an intermediate connecting part and are located in the inner hole formed by the inner annular partition 33. In other embodiments, the intermediate connecting part can be connected to the outer periphery of the upper material blocking plate and the lower material blocking plate, and the material dividing unit is arranged in the space enclosed by the intermediate connecting part and the upper material blocking plate and the lower material blocking plate. At this time, a fixed frame can be arranged on the outer periphery of the receiving sand bin, and the feeding hopper and the distribution hopper are fixedly connected to the fixed frame.

[0066] In this embodiment, the feeding hopper 1 is fixedly connected to the upper flange 37, the distribution hopper 2 is fixedly connected to the lower flange 38, and the distribution cone 21 is fixedly connected to the motor bracket 12. In other embodiments, the upper and lower sides of the outer annular partition can be fixed to the feeding hopper and the distribution hopper by welding, and the distribution hopper and the distribution cone are also fixed by welding; the feeder and the feeding hopper and the distribution hopper may also be disconnected. At this time, the feeding hopper, the distribution hopper and the feed port and the discharge port of the feeder are connected through a conveying hose, and the feeding hopper and the distribution hopper are fixedly supported by separate brackets.

[0067] In this embodiment, a distribution hopper 2 is provided between the feeder 3 and the receiving sand bin 4. In other embodiments, a distribution hopper may not be provided between the feeder and the receiving sand bin, and the upper part of the receiving sand bin is directly fixedly connected to the lower flange by bolts; or there is no connection between the receiving sand bin and the feeder, and the receiving sand bin is only provided on the lower side of the feeder, and the sand flowing out of the discharge port of the feeder directly falls into the receiving sand bin.

Claims

1. A feeder, characterized in that: The invention comprises a material distribution unit, a rotating unit and a driving motor for driving the rotating unit to rotate, wherein a plurality of fan-shaped material distribution chambers with the same volume are evenly distributed at intervals along the circumferential direction of the rotating axis of the rotating unit, and the upper and lower ends of the fan-shaped material distribution chamber are both opening structures. The rotating unit comprises an upper blocking plate arranged on the upper side of the material distribution unit to cover the upper opening of the fan-shaped material distribution chamber and a lower blocking plate arranged on the lower side of the material distribution unit to cover the lower opening of the fan-shaped material distribution chamber. The upper blocking plate is a disc structure with a fan-shaped opening, the upper blocking plate is provided with a fan-shaped feed port for materials to enter the fan-shaped material distribution chamber, and the lower blocking plate is provided with a fan-shaped discharge port for materials to flow out of the fan-shaped material distribution chamber, and the feed port and the discharge port are staggered at least one fan-shaped material distribution chamber in the rotation circumferential direction of the rotating unit; when in use, when there is material above the upper blocking plate, the driving motor of the feeder is started, and the driving motor drives the rotating unit to rotate at a uniform speed.

2. The feeder according to claim 1, characterized in that: The projection of the feed port on the lower blocking plate and the discharge port are centrally symmetrically arranged along the rotation axis of the rotating unit.

3. The feeder according to claim 1 or 2, characterized in that: The central angle of each annular material distribution cavity is smaller than the central angle of the feed inlet.

4. The feeder according to claim 1 or 2, characterized in that: The material distribution unit includes an inner annular partition and an outer annular partition coaxially arranged, and a cavity partition radially connected between the inner annular partition and the outer annular partition. A plurality of cavity partitions are evenly distributed at circumferential intervals along the rotation axis of the rotating unit, and each fan-shaped material distribution cavity is surrounded by an inner annular partition, an outer annular partition and two adjacent cavity partitions.

5. The feeder according to claim 4, characterized in that: The upper material blocking plate and the lower material blocking plate are both disc structures with fan-shaped openings. The fan-shaped opening on the upper material blocking plate constitutes the feed port, and the fan-shaped opening on the lower material blocking plate constitutes the discharge port. The center of the disc structure is set on the rotation axis of the rotating unit. The upper material blocking plate and the lower material blocking plate are connected by an intermediate connecting part. The intermediate connecting part is a hollow structure and is located in the inner hole formed by the inner annular partition. The intermediate connecting part is drivingly connected to the output shaft of the drive motor.

6. The feeder according to claim 5, characterized in that: The lower material blocking plate and the middle connecting part are an integrated structure, and the upper material blocking plate and the middle connecting part are detachably connected.

7. The feeder according to claim 5 or 6, characterized in that: An upper flange plate for connecting with a feeding device and a lower flange plate for connecting with a receiving device are respectively arranged on the upper and lower sides of the outer annular partition plate, and positioning steps for positioning the corresponding material retaining plate are arranged on the upper and lower flange plates.

8. An anti-segregation sand bin system, comprising a feeding hopper, a receiving sand bin and a feeder arranged between the feeding hopper and the receiving sand bin, characterized in that: The feeder comprises a material distribution unit, a rotating unit and a driving motor for driving the rotating unit to rotate. The material distribution unit is provided with a plurality of fan-shaped material distribution cavities of the same volume at intervals along the circumferential direction of the rotating axis of the rotating unit. The upper and lower ends of the fan-shaped material distribution cavity are both open structures. The rotating unit comprises an upper material blocking plate arranged on the upper side of the material distribution unit to block the upper opening of the fan-shaped material distribution cavity and a lower material blocking plate arranged on the lower side of the material distribution unit to block the lower opening of the fan-shaped material distribution cavity. The upper material blocking plate is a fan-shaped opening. The disc structure comprises a fan-shaped feeding port for feeding sand material into the fan-shaped feeding chamber on the upper material blocking plate, and a fan-shaped feeding port for feeding sand material out of the fan-shaped feeding chamber on the lower material blocking plate. The feeding port and the feeding port are staggered by at least one fan-shaped feeding chamber in the rotation circumferential direction of the rotating unit, the feeding port is connected with the feeding hopper, and the feeding port is connected with the receiving sand bin. When in use, when there is material above the upper material blocking plate, the driving motor of the feeder is started, and the driving motor drives the rotating unit to rotate at a uniform speed.

9. The anti-segregation sand bin system according to claim 8, characterized in that: The projection of the feed port on the lower material blocking plate and the discharge port are centrally symmetrically arranged along the rotation axis of the rotating unit.

10. The anti-segregation sand bin system according to claim 8 or 9, characterized in that: The central angle of each annular material distribution cavity is smaller than the central angle of the feed inlet.

11. The anti-segregation sand bin system according to claim 8 or 9, characterized in that: The material distribution unit includes an inner annular partition and an outer annular partition coaxially arranged, and a cavity partition radially connected between the inner annular partition and the outer annular partition. A plurality of cavity partitions are evenly distributed at circumferential intervals along the rotation axis of the rotating unit, and each fan-shaped material distribution cavity is surrounded by an inner annular partition, an outer annular partition and two adjacent cavity partitions.

12. The anti-segregation sand bin system according to claim 11, characterized in that: The upper material blocking plate and the lower material blocking plate are both disc structures with fan-shaped openings. The fan-shaped opening on the upper material blocking plate constitutes the feed port, and the fan-shaped opening on the lower material blocking plate constitutes the discharge port. The center of the disc structure is set on the rotation axis of the rotating unit. The upper material blocking plate and the lower material blocking plate are connected by an intermediate connecting part. The intermediate connecting part is a hollow structure and is located in the inner hole formed by the inner annular partition. The intermediate connecting part is drivingly connected to the output shaft of the drive motor.

13. The anti-segregation sand bin system according to claim 12, characterized in that: The lower material blocking plate and the middle connecting part are an integrated structure, and the upper material blocking plate and the middle connecting part are detachably connected.

14. The anti-segregation sand bin system according to claim 12 or 13, characterized in that: An upper flange connected to the feeding hopper and a lower flange connected to the receiving sand bin are respectively arranged on the upper and lower sides of the outer annular partition, and positioning steps for positioning the corresponding material blocking plates are arranged on the upper and lower flanges.

15. The anti-segregation sand bin system according to claim 12 or 13, characterized in that: A distribution hopper coaxial with the rotating unit of the feeder is provided between the receiving sand bin and the feeder, a distribution cone is coaxially provided in the distribution hopper, a plurality of distribution plates evenly spaced along the circumference of the distribution cone are connected between the bucket wall of the distribution hopper and the distribution cone, the distribution hopper, the distribution cone and the plurality of distribution plates form a plurality of distribution cavities evenly distributed along the circumference of the distribution cone, each distribution cavity corresponds one-to-one to the fan-shaped distribution cavity of the feeder, and a plurality of distribution holes evenly distributed circumferentially on the bucket bottom of the distribution hopper and connected one-to-one with the distribution cavities, so that the sand material in the distribution cavity can flow out from the corresponding distribution holes to the receiving sand bin.

16. The anti-segregation sand bin system according to claim 15, characterized in that: A lower flange connected to the material distribution hopper is provided at the lower side of the outer annular partition of the feeder, and the rotating unit of the feeder is fixed to the upper side of the material distribution cone through a thrust bearing.

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