Split type automatic discharging hopper

Abstract

The invention discloses a split type automatic discharging hopper, and belongs to the field of powder feeding equipment. The discharging hopper comprises a main frame and a secondary frame which are separated from each other, a material scattering part is fixed to the top of the secondary frame and comprises a servo-driven rotating shaft, a first rotary vane and a second rotary vane, and the rotating shaft penetrates through a separation groove and obliquely points to the bottom of the hopper; the first rotary vane and the second rotary vane are both of a spiral structure which is fixed around the axis of the rotating shaft and are consistent in rotation direction, the pitch of a spiral line corresponding to the second rotary vane is larger than that of a spiral line corresponding to the first rotary vane, and the diameter of the spiral line corresponding to the second rotary vane is larger than that of the spiral line corresponding to the first rotary vane. A first leakage hole and a second leakage hole are respectively formed in the first rotary vane and the second rotary vane, and are staggered in a plane. According to the invention, the hopper and the bulk material piece for cutting materials are installed in a split manner, and then the two spiral vanes continuously cut the materials, so that the uniformity of subsequent products is ensured.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of powder feeding equipment, and in particular relates to a split type automatic feeding hopper. BACKGROUND

[0002] The automatic feeding hopper is a device used in an automated production line, and its main function is to temporarily store a certain amount of material (usually in granular, powdered or small block form), and automatically and accurately deliver these materials to the next process or device according to pre-set instructions (such as time, weight, quantity).

[0003] Similarly, for the feeding of powdered materials, a vibrating device is usually added to the side wall of the hopper to ensure the vibrating screening of the powder, which is more efficient and suitable for powder screening, but the presence of such devices as vibrating motors can cause the servo motor, angle encoder and other electrical appliances to be unable to work stably for a long time, and the corresponding shaft body can be in hard contact with the hopper or other rigid structures, causing wear and tear. Because additional electrically controlled bulk material devices cannot be installed, the screening of powder is usually filtered by steel wire mesh and similar structures.

[0004] At present, a basalt split screening device and a screening method are disclosed in Chinese Patent No. CN120306247A, which includes a rack, a feeding hopper arranged on the rack, and a screening assembly arranged in the feeding hopper. The screening assembly includes a chain structure arranged in parallel, a chain net structure arranged between the chain structures, and a transmission structure. The chain net structure includes a plurality of movably connected net buckles, and the gaps between the plurality of net buckles serve as screen holes. The screening assembly is used to realize the movement between the net buckles through the transmission structure to complete the screening process. The rotation of the motor is converted into the reciprocating motion of the net buckles through the use of a cam and a screening rod. Through this motion, the screen holes change constantly during the screening process. The chain rod penetrates the net buckles and is connected with the chain structure, which increases the stability and coordination of the movement of the chain net structure and ensures the uniformity of the change of the screen holes. Thus, the problem of powder blockage of the fixed screen and the vibrating screen in the prior art is solved.

[0005] As can be seen, in order to avoid powder blockage, the above-mentioned structure realizes the periodic motion of the screen holes through a chain wheel, realizes the periodic change of the screen holes, and thus ensures the screening effect. However, the screening of this structure is limited to the impact type screening of the steel wire mesh and the powdered material, the screening granularity is limited, and the product uniformity or precision often cannot meet the requirements. In addition, the chain wheel transmission process is still disturbed by the corresponding vibrating appliances of the vibrating screen, which causes serious long-term wear and tear and high maintenance cost.

[0006] Therefore, we propose a split type automatic feeding hopper to solve the above-mentioned problems. SUMMARY

[0007] In view of the above problems existing in the prior art, the present application aims to provide a split type automatic discharge hopper.

[0008] In order to solve the above problems, the technical scheme adopted by the present application is as follows: The split type automatic discharge hopper comprises a main frame and a secondary frame which are separated from each other, the main frame is fixed with a hopper which is open upward, the top of the hopper is sealed by a cover plate, and a bulk layer is communicated with the center of the cover plate, the bulk layer is mesh-shaped and comprises multiple layers, the cover plate is further provided with a separation groove on the outside corresponding to the bulk layer, a vibration motor is further fixed on the side wall of the hopper, the secondary frame is fixed with a bulk material piece on the top, the bulk material piece comprises a rotation shaft driven by a servo motor, a first rotating blade and a second rotating blade, the rotation shaft penetrates through the separation groove and is inclined to the bottom of the hopper, the first rotating blade and the second rotating blade are both spiral structures fixed around the axis of the rotation shaft and have consistent rotation directions, the pitch of the corresponding spiral line of the second rotating blade is greater than that of the first rotating blade, the diameter length of the corresponding spiral line of the second rotating blade is greater than that of the first rotating blade, and the first rotating blade and the second rotating blade are further provided with a first leakage hole and a second leakage hole, respectively, and the first leakage hole and the second leakage hole are misaligned in the plane.

[0009] Further, the hopper is a cone, and a discharge port is fixed on the bottom flange, the hopper gradually narrows from top to bottom, and the included angle between the axis of the rotation shaft and the vertical axis of the hopper is greater than the taper of the hopper.

[0010] Further, the bulk layer comprises a feeding bin and multiple layers of steel wire mesh, the feeding bin is bolted on the top center of the cover plate and communicated with the cover plate, and each layer of the steel wire mesh is horizontally movably fixed on the inner wall of the feeding bin, and one side of the feeding bin is hinged with a window for disassembling and replacing the steel wire mesh.

[0011] Further, the secondary frame comprises a height rod, a steering block, a reinforcing rod and a counterweight block, the height rod is flush with the top surface of the hopper, the bottom of the height plate is supported by a bottom plate and the ground, and the counterweight block is connected and fixed with the center of the bottom plate, the reinforcing rod is fixedly connected with the height rod and the bottom plate at both ends, and the steering block is fixedly connected with the top of the height rod.

[0012] Further, the bulk material piece further comprises a servo motor, a worm wheel, a worm, a bearing seat and a mounting disc, the steering block is an angle block and has a U-shaped groove corresponding to the inclined surface, one end of the U-shaped groove is fixedly connected with the servo motor, the other end is fixedly connected with the bearing seat, the exposed separation groove of the rotating shaft is rotationally connected with the bearing seat, the output end of the servo motor is coaxially fixed with the worm, the mounting disc is fixedly sleeved on the bearing seat, the worm wheel is rotationally connected at the center of the mounting disc and coaxially arranged with the rotating shaft, and the worm wheel is engaged with the worm.

[0013] Further, two opposite angle plates are fixedly welded on the side wall of the hopper, and the vibration motor is fixedly bolted with the two angle plates.

[0014] Further, the first rotating blade and the second rotating blade are both arranged at intervals from the inner wall of the hopper, and the interval distance is not less than 2cm.

[0015] Further, the first leakage hole and the second leakage hole comprise a plurality of holes and are arranged in a circumferential array along the axis of the rotating shaft.

[0016] Further, the first rotating blade and the second rotating blade are both smooth stainless steel plates, and the connecting portions of the rotating shaft, the first rotating blade and the second rotating blade are all chamfered, so that the interval distance between the first rotating blade and the second rotating blade in a corresponding circle gradually increases as the axis of the rotating shaft rotates one circle from top to bottom.

[0017] Compared with the prior art, the beneficial effects of the present application are: The present application separates the hopper and the bulk material piece for cutting the material, and the two are independent and do not interfere with each other, so that the powder material can be further cut under the premise of ensuring the vibration screening efficiency, and the material is pre-screened by the bulk material layer before cutting, and the material falling under the gravity is continuously cut along the spiral track during the cutting process, so that the precision and uniformity of the subsequent discharged product are greatly ensured. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is an isometric structure schematic view of the automatic hopper of the present application; Figure 2 It is a front view of the automatic hopper of the present application; Figure 3 It is a cross-sectional view of the internal structure of the automatic hopper of the present application; Figure 4 It is a structure schematic view of the bulk material piece of the automatic hopper of the present application; Figure 5 It is a structure schematic view of the bottom of the bulk material piece of the automatic hopper of the present application; Figure 6The structural schematic diagram of the bulk layer of the automatic hopper.

[0019] In the figure: 1, main frame; 2, secondary frame; 3, hopper; 4, cover plate; 5, bulk layer; 6, separation groove; 7, vibration motor; 8, bulk piece; 9, rotating shaft; 10, first spiral blade; 11, second spiral blade; 12, first leakage hole; 13, second leakage hole; 14, discharge port; 15, feeding bin; 16, steel mesh; 17, window; 18, height rod; 19, turning block; 20, reinforcing rod; 21, counterweight; 22, bottom plate; 23, servo motor; 24, worm gear; 25, worm; 26, bearing seat; 27, mounting disc; 28, U-shaped groove; 29, angle plate. DETAILED DESCRIPTION

[0020] The application will be further described below in combination with specific embodiments.

[0021] As shown in Figure 1 , Figure 2 and Figure 3 , for the overall structure, in the embodiment, a main frame 1 and a secondary frame 2 are separated from each other, the main frame 1 is fixed with a hopper 3 with an opening upward, the hopper 3 is sealed at the top by a cover plate 4, and a bulk layer 5 is communicated at the center of the cover plate 4, the bulk layer 5 is net-shaped and includes multiple layers, the cover plate 4 is further provided with a separation groove 6 at the outside corresponding to the bulk layer 5, the side wall of the hopper 3 is further fixed with a vibration motor 7, two oppositely arranged angle plates 29 are fixed and welded to the side wall of the hopper 3, and the vibration motor 7 is bolted to the two angle plates 29. The secondary frame 2 is fixed with a bulk piece 8 at the top, the bulk piece 8 includes a rotating shaft 9 driven by a servo motor, a first spiral blade 10, and a second spiral blade 11, the rotating shaft 9 penetrates through the separation groove 6 and is inclined to the bottom of the hopper 3, and the first spiral blade 10 and the second spiral blade 11 are both spiral structures fixed around the axis of the rotating shaft 9 and have consistent rotation directions.

[0022] Through the above structure, in order to avoid the interference of the vibration motor 7 with other electrical equipment as in the traditional screening structure, the hopper 3 itself and the bulk piece 8 for cutting the material are installed separately, and they are independent of each other and do not interfere with each other, on the premise of ensuring the vibration screening efficiency, the powdery material can be further cut, and before cutting, the material is also pre-screened by the net-layer bulk layer 5, and during the cutting process, the material falling under the gravity by the rotation of the two spiral blades falls along the spiral track, which greatly ensures the precision and uniformity of the subsequent discharge product.

[0023] And for the specific cutting structure of the bulk material 8, in the embodiment, the hopper 3 is a cone, and the discharge port 14 is fixed on the bottom flange, the hopper 3 is gradually narrowed from top to bottom, the angle between the vertical axis of the hopper 3 and the axis of the rotating shaft 9 is greater than the taper of the hopper 3, so as to ensure that the inclination angle of the rotating shaft 9 can be the longest under the premise that the rotating blade does not contact the inner wall of the hopper 3, and the length of the rotating shaft 9 can ensure complete coverage of the top bulk material layer 5, and the rotating shaft 9 itself is also installed separately from the exposed hopper 3 without interference from the vibrating motor 7, and the cutting process is stable and reliable.

[0024] Based on the inclined rotating shaft 9, the specific structure of the corresponding first rotating blade 10 and the second rotating blade 11 can refer to FIG. 4 and FIG. 5. Figure 5 In the embodiment, the corresponding helix pitch of the second rotating blade 11 is greater than that of the first rotating blade 10, the diameter of the corresponding helix of the second rotating blade 11 is greater than that of the first rotating blade 10, and the first leak hole 12 and the second leak hole 13 are respectively arranged on the first rotating blade 10 and the second rotating blade 11, and the first leak hole 12 and the second leak hole 13 are staggered in the plane.

[0025] The reason for designing different pitches is to ensure that the second rotating blade 11 can cover the area of the first rotating blade 10 and can maximize the falling of the material cut by the first rotating blade 10, and the diameter of the first leak hole 12 can be designed to be greater than that of the second leak hole 13. After the pre-screening of the bulk material layer 5 is completed, the material enters the hopper 3, and then contacts the first rotating blade 10 first. The outer edge of the first rotating blade 10 cuts the freely falling material, and the helical structure design will accumulate some material inside the helix, indirectly achieving the buffering of the material. The slightly larger particles of the material will be splashed into the air under the action of the centrifugal force of the rotating shaft 9, and repeated cutting will be performed. The smaller particles of the material will be accumulated by the second rotating blade 11 after falling from the first leak hole 12, and the same, the outer edge of the second rotating blade 11 will also cut the freely falling material, and the accumulated material inside the helix will also be splashed and repeated cutting under the action of the centrifugal force.

[0026] More specifically, the first rotating blade 10 and the second rotating blade 11 are spaced apart from the inner wall of the hopper 3, and the spacing distance is not less than 2 cm. The first leak hole 12 and the second leak hole 13 include a plurality of circular arrays around the axis of the rotating shaft 9. The first rotating blade 10 and the second rotating blade 11 are smooth stainless steel plates, and the connection between the rotating shaft 9 and the first rotating blade 10 and the second rotating blade 11 is chamfered. With the rotating shaft 9, the distance between the first rotating blade 10 and the second rotating blade 11 gradually increases with each rotation from top to bottom.

[0027] The design with gradually increasing spacing ensures that the distance between the first blade 10 and the second blade 11 is different (i.e., different height difference) in each revolution as the material falls along the spiral track. The impact force of the material on the blades will change under different height differences, resulting in different inertia and different centrifugal forces. This ensures that the material is scattered with high intensity during the fall, ensuring the cutting effect and improving the uniformity of material cutting.

[0028] For the driving implementation of the rotating shaft 9, the bulk component 8 also includes a servo motor 23, a worm gear 24, a worm 25, a bearing seat 26, and a mounting plate 27. The steering block 19 is a corner block with a U-shaped groove 28 protruding on the corresponding inclined surface. One end of the U-shaped groove 28 is connected and fixed to the servo motor 23, and the other end is connected and fixed to the bearing seat 26. The exposed partition groove 6 of the rotating shaft 9 is set in the exposed shaft section and is rotatably connected to the bearing seat 26. The output end of the servo motor 23 is coaxially fixed to the worm 25. The mounting plate 27 is fixedly sleeved on the bearing seat 26. The worm gear 24 is rotatably connected to the center of the mounting plate 27 and remains coaxial with the rotating shaft 9. The worm gear 24 meshes with the worm 25.

[0029] After the servo motor 23 rotates the shaft 9, it drives the worm gear 25 to mesh with the worm wheel 24. The worm wheel 24 then drives the shaft 9 to rotate and be positioned on the bearing platform. The self-locking characteristics of the worm wheel 24 and worm gear 25 provide further protection for the split installation. The steering block 19 can provide sufficient support for the tilting shaft 9 to meet the requirements of the split installation. Similarly, in order to meet the requirements of this split installation structure, the secondary frame 2 in this invention includes a height rod 18, a steering block 19, a reinforcing rod 20, and a counterweight block 21. The height rod 18 is flush with the top surface of the hopper 3. The bottom of the height plate is supported by the base plate 22 and is connected and fixed to the counterweight block 21 at the center of the base plate 22. The two ends of the reinforcing rod 20 are fixedly connected to the height rod 18 and the base plate 22, respectively. The steering block 19 is fixedly connected to the top of the height rod 18. Both the counterweight block 21 and the reinforcing rod 20 ensure the balance with the center of gravity of the shaft 9 and the blade, ensuring the stability of the blade's split rotation.

[0030] For pre-screening before segmentation, such as Figure 6 As shown, in this invention, the bulk material layer 5 includes a feeding bin 15 and multiple layers of wire mesh 16. The feeding bin 15 is bolted to the top center of the cover plate 4 and communicates with the cover plate 4. Each layer of wire mesh 16 is horizontally and movably fixed to the inner wall of the feeding bin. A window 17 is hinged to one side of the feeding bin 15 to replace the wire mesh 16.

[0031] In order to avoid that the large particles of material wear the rotary blade, the application also adopts the structure of the traditional steel mesh screen, and places the structure on the top of the equipment, after the material is fed, the material is pre-screened through the multiple layers of steel wire mesh 16, the steel wire mesh 16 can be replaced by the window 17 to have different mesh numbers, and the equipment has wider applicability.

[0032] The technical scope of the present application is not limited to the above description, and those skilled in the art can make various modifications and changes to the above embodiments without departing from the technical idea of the present application, and these modifications and changes shall be within the protection scope of the present application.

Claims

1. A split-type automatic feeding hopper, characterized in that, The device includes a main frame and a secondary frame separated from each other. A hopper with an upward opening is fixed on the main frame. The top of the hopper is sealed by a cover plate, and a loose material layer is connected in the center of the cover plate. The loose material layer is mesh-like and includes multiple layers. The cover plate also has a partition groove on the outer side of the corresponding loose material layer. A vibration motor is also fixed on the side wall of the hopper. A loose material component is fixed on the top of the secondary frame. The loose material component includes a servo-driven rotating shaft, a first blade, and a second blade. The rotating shaft passes through the partition groove and is inclined towards the bottom of the hopper. The first blade and the second blade are both spiral structures fixed around the axis of the rotating shaft and have the same direction of rotation. The pitch of the spiral line corresponding to the second blade is greater than the pitch of the spiral line corresponding to the first blade. The diameter of the spiral line corresponding to the second blade is greater than the diameter of the spiral line corresponding to the first blade. A first drain hole and a second drain hole are respectively opened on the first blade and the second blade. The first drain hole and the second drain hole are offset in the plane.

2. The split-type automatic feeding hopper according to claim 1, characterized in that, The hopper is conical and has a discharge port fixed at the bottom flange. The hopper gradually narrows from top to bottom. The angle between the vertical axis of the hopper and the axis of the rotating shaft is greater than the taper of the hopper.

3. The split-type automatic feeding hopper according to claim 1, characterized in that, The bulk material layer includes a feed hopper and multiple layers of wire mesh. The feed hopper is bolted to the top center of the cover plate and communicates with the cover plate. Each layer of wire mesh is horizontally and movably fixed to the inner wall of the feed hopper. A window is hinged on one side of the feed hopper to allow for the replacement of the wire mesh.

4. The split-type automatic feeding hopper according to claim 1, characterized in that, The secondary frame includes a height bar, a steering block, a reinforcing bar, and a counterweight. The height bar is flush with the top surface of the hopper. The bottom of the height plate is supported by a base plate and fixed to the ground. The counterweight is connected and fixed at the center of the base plate. The two ends of the reinforcing bar are fixedly connected to the height bar and the base plate, respectively. The steering block is fixedly connected to the top of the height bar.

5. A split-type automatic feeding hopper according to claim 4, characterized in that, The bulk components also include a servo motor, a worm gear, a worm, a bearing housing, and a mounting plate. The steering block is a corner block with a U-shaped groove protruding on the corresponding inclined surface. One end of the U-shaped groove is connected and fixed to the servo motor, and the other end is connected and fixed to the bearing housing. The exposed partition groove of the rotating shaft is set in the exposed shaft section and is rotatably connected to the bearing housing. The output end of the servo motor is coaxially fixed to the worm. The mounting plate is fixedly sleeved on the bearing housing. The worm gear is rotatably connected to the center of the mounting plate and keeps coaxial with the rotating shaft. The worm gear meshes with the worm.

6. A split-type automatic feeding hopper according to claim 1, characterized in that, The hopper sidewall is fixedly welded with two oppositely arranged corner plates, and the vibrating motor is bolted to the two corner plates.

7. A split-type automatic feeding hopper according to claim 1, characterized in that, Both the first and second blades are spaced apart from the inner wall of the hopper, with a spacing of not less than 2 cm.

8. A split-type automatic feeding hopper according to claim 1, characterized in that, The first and second leaks include multiple holes, and all are arranged in a circular array around the axis of rotation.

9. A split-type automatic feeding hopper according to claim 1, characterized in that, Both the first and second blades are made of smooth stainless steel plates. The connection between the rotating shaft and the first and second blades is chamfered. With each rotation of the rotating shaft from top to bottom, the distance between the first and second blades in the corresponding rotation gradually increases.

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