Vibrating feeding device for powder bowl filling

Abstract

The vibration feeding device comprises an equipment frame, a stock bin and a metering mechanism, a frame plate is rotationally connected with a feeding hopper through an elastic support, and an electromagnetic vibrator is installed at the bottom of the feeding hopper; a vertical frame is fixedly arranged in the frame plate, two chain wheels are rotationally connected to the vertical frame, the outer sides of the chain wheels are sleeved with chains in a meshed mode, a guide part is arranged at the bottom of the frame plate, and a traction part and a linkage part are arranged on the vertical frame. In the feeding process, the stock bin is firstly controlled to quickly discharge materials into the feeding hopper, meanwhile, the feeding hopper inclines at a large angle to feed the materials into the metering mechanism, as the weight of the materials is about to reach the standard, the opening degree of the first valve plate and the second valve plate is adjusted, and the inclination angle of the feeding hopper is correspondingly controlled, so that the feeding efficiency is improved. Therefore, the feeding speed of the feeding hopper is adjusted, and the feeding accuracy is guaranteed while the feeding efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of powder material processing, in particular to a vibrating feeding device for powder filling. Background Art

[0002] Powder feeding is a high-precision, high-efficiency, environmentally friendly automation technology, which is widely used in the production process of powder materials that require high-temperature sintering. Powder vibrating feeder conveys materials from the silo to downstream equipment by vibration, and is widely used in industries such as chemical, pharmaceutical, food, powder metallurgy and military explosives for accurate feeding of powdered materials.

[0003] In the prior art, the vibration feeding of powder mostly uses an electromagnetic vibrator to drive the feeding trough to perform periodic linear reciprocating vibration along the inclined direction. When the vertical component of the acceleration of the feeder vibration is greater than the gravity acceleration, the material in the trough will be thrown up and jump forward along the trajectory of the parabola to achieve feeding. However, since the inclination angle of the feeding trough is not easy to adjust according to the loading degree of the material during the feeding process, if the inclination angle of the feeding trough is small during the feeding process, the electromagnetic vibrator needs to vibrate for a long time. Although accurate feeding of the material can be achieved, it is difficult to ensure feeding efficiency. If the inclination angle of the feeding trough is large during the feeding process, when the material filling reaches the rated weight, the operation of the electromagnetic vibrator is stopped. At this time, the material in the feeding trough can still continue to be filled into the metering mechanism under the action of gravity, so there is a problem of difficulty in ensuring accurate feeding.

[0004] Based on the above-mentioned defects, a vibrating feeding device for powder filling is provided. Summary of the invention

[0005] The purpose of the present invention is to solve the above problems and to propose a vibrating feeding device for powder filling.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a vibrating feeding device for powder filling, comprising an equipment frame, a silo mounted on the equipment frame and a metering mechanism, the silo is equipped with an air hammer, the interior of the silo is rotatably connected with a first valve plate and a second valve plate, the bottom of the silo is fixed with a frame plate through a frame rod, the frame plate is rotatably connected with a feeding hopper through an elastic bracket, an electromagnetic vibrator is installed on the bottom of the feeding hopper, the feeding hopper and the frame plate are both provided with open grooves, the bottom of the frame plate is provided with a butt joint pipe for vertical sliding, and the butt joint pipe and the feeding hopper are connected with the open groove through a flexible pipe fitting; The bottom of the frame plate is rotatably connected with a turntable and a telescopic mechanism for controlling the rotation of the turntable. A vertical frame is fixed in the frame plate, and two sprockets are rotatably connected to the vertical frame. The outer engaging sleeves of the two sprockets are provided with chains. A guide member is provided at the bottom of the frame plate. When the turntable rotates, the sprocket rotates under the action of the guide member. A traction member and a linkage member are provided on the vertical frame. When the sprocket rotates, the inclination angle of the feed hopper is controlled by the traction member, and the opening and closing degree of the first valve plate and the second valve plate are controlled by the linkage member.

[0007] Preferably, the flexible pipe comprises a leather sleeve connected between the feed hopper and the frame plate, and a corrugated pipe connected between the frame plate and the butt pipe.

[0008] Preferably, the guide member includes a rotating shaft rotatably connected to the stand and coaxially fixed with one of the sprockets, an outer sliding sleeve of the rotating shaft is provided with a sliding sleeve, and an arm is rotatably connected between the rotating disk and the sliding sleeve.

[0009] Preferably, a protrusion is formed on the inner wall of the sliding sleeve, and a slide rail is formed on the side wall of the rotating shaft to cooperate with the sliding of the protrusion, and the slide rail is composed of a spiral groove and a linear groove. When the protrusion slides along the spiral groove, the rotating shaft will rotate along the stand, and when the protrusion slides along the linear groove, the rotating shaft will remain stationary.

[0010] Preferably, the traction member comprises a sliding frame slidably connected to the outside of the vertical frame, the sliding frame is fixed to the chain, and when the sprocket drives the chain, the sliding frame slides along the vertical frame.

[0011] Preferably, a U-shaped frame is fixedly provided on the feeding hopper, a round block is fixedly provided on the inner wall of the U-shaped frame, and a slideway for cooperating with the round block to slide is formed on the side wall of the sliding frame.

[0012] Preferably, the linkage comprises a shaft rotatably connected to the stand, the shaft is coaxially fixed between the second valve plate and the corresponding sprocket, and a meshing assembly is provided on the silo, and when the second valve plate rotates, the first valve plate is driven to rotate synchronously through the meshing assembly.

[0013] Preferably, the meshing assembly includes two pulleys rotatably connected to the outside of the silo, and the outer meshing sleeves of the two pulleys are provided with a transmission belt. A rotary sleeve that penetrates the silo is coaxially fixed between one of the pulleys and the first valve plate, and the rotary sleeve is arranged on the outside of the shaft rod. Two gears corresponding to the pulleys are arranged on the outside of the silo, and the two gears are meshed. One of the gears is coaxially fixed with the shaft rod, and the other gear is coaxially fixed with the corresponding pulley.

[0014] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. In the present application, during the feeding process, the material bin is first controlled to discharge the material into the feeding hopper quickly, and at the same time, the feeding hopper is tilted at a larger angle to feed the material into the metering mechanism. As the material weight is about to reach the standard, the opening and closing degree of the first valve plate and the second valve plate are adjusted, and the tilt angle of the feeding hopper is correspondingly controlled, thereby adjusting the feeding speed of the feeding hopper to ensure the accuracy of feeding while improving the feeding efficiency.

[0015] 2. In this application, the sprocket is self-locked by limiting the linear groove by the protrusion. This mechanical self-locking method is more stable and reliable than some other locking methods that rely on external power. In some harsh working environments, such as high temperature, high humidity, and high dust, the self-locking function of the mechanical structure is not easily disturbed by external factors and can play a role stably for a long time, ensuring that the material enters the subsequent processing link at a predetermined speed and amount, avoiding the fluctuation of material flow due to changes in the angle of the feed hopper, affecting production quality and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the three-dimensional structure of a feeding device provided in an embodiment of the present invention is shown; Figure 2 A schematic cross-sectional view of a local structure of a feeding device provided according to an embodiment of the present invention is shown; Figure 3 A schematic diagram of a top-sectional structure of a silo provided according to an embodiment of the present invention is shown; Figure 4 It is shown that according to the present invention Figure 3 A partial enlarged schematic diagram of point A is provided; Figure 5 A schematic diagram of the bottom structure of a shelf provided according to an embodiment of the present invention is shown; Figure 6 A schematic diagram of the matching structure of a rotating disk and a sliding sleeve according to an embodiment of the present invention is shown; Figure 7 A schematic diagram of the inner structure of a U-shaped frame provided according to an embodiment of the present invention is shown.

[0017] Legend: 1. Equipment frame; 2. Silo; 3. Air hammer; 4. Frame plate; 5. Elastic bracket; 6. Feed hopper; 7. Leather cover; 8. Electromagnetic vibrator; 9. First valve plate; 901, rotary sleeve; 10. Second valve plate; 11. Shaft; 12. Gear; 13. Pulley; 14. Transmission belt; 15. Stand; 16. Sprocket; 17. Chain; 18. Sliding frame; 19. Slideway; 20. U-shaped frame; 21. Round block; 22. Turntable; 23. Telescopic mechanism; 24. Butt pipe; 25. Bellows; 26. Sliding sleeve; 27. Protrusion; 28. Arm; 29. ​​Rotary shaft; 30. Slide rail; 31. Measuring mechanism. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] See also Figure 1-Figure 7 The present invention provides a technical solution: a vibrating feeding device for powder filling, comprising an equipment frame 1, a silo 2 installed on the equipment frame 1 and a metering mechanism 31, an air hammer 3 is installed on the silo 2, a first valve plate 9 and a second valve plate 10 are rotatably connected inside the silo 2, a frame plate 4 is fixed to the bottom of the silo 2 through a frame rod, a feeding hopper 6 is rotatably connected to the frame plate 4 through an elastic bracket 5, an electromagnetic vibrator 8 is installed at the bottom of the feeding hopper 6, an open groove is provided on the feeding hopper 6 and the frame plate 4, a butt joint pipe 24 is vertically slidable at the bottom of the frame plate 4, and the butt joint pipe 24 and the feeding hopper 6 are connected to the open groove through a flexible pipe fitting.

[0020] The air hammer 3, the electromagnetic vibrator 8 and the metering mechanism 31 are prior art. The air hammer 3 is used to solve the problem of powder and granular material blocking and adhering to the silo 2 and the pipe wall, so that the material can flow smoothly and prevent the silo 2 and the pipe from being blocked or bridged. The electromagnetic vibrator 8 is based on the action of electromagnetic induction and Lorentz force to vibrate the feed hopper 6, thereby realizing vibration feeding. The metering mechanism 31 collects the material weight signal through the sensor assembly, and ensures the accuracy of material loading in the industrial production process by accurately controlling the weight of the material.

[0021] When the material needs to be quantitatively loaded, the butt joint 24 is connected downward to the opening of the metering mechanism 31, and then the feeding hopper 6 is lifted upward. At the same time, the first valve plate 9 and the second valve plate 10 are rotated and opened, and the material in the silo 2 is transported to the feeding hopper 6. After the material passes through the feeding hopper 6, it is transported to the metering mechanism 31 by the flexible pipe. The vertical movement of the butt joint 24 is controlled by the existing electric telescopic rod, which will not be described in detail here.

[0022] The bottom of the frame plate 4 is rotatably connected with a turntable 22 and a telescopic mechanism 23 for controlling the rotation of the turntable 22. A vertical frame 15 is fixedly provided in the frame plate 4. Two sprockets 16 are rotatably connected to the vertical frame 15. Chains 17 are provided on the outer engaging sleeves of the two sprockets 16. A guide is provided at the bottom of the frame plate 4. When the turntable 22 rotates, the sprocket 16 rotates under the action of the guide. A traction member and a linkage member are provided on the vertical frame 15. When the sprocket 16 rotates, the inclination angle of the feed hopper 6 is controlled by the traction member, and the opening and closing degree of the first valve plate 9 and the second valve plate 10 are controlled by the linkage member.

[0023] A controller is installed on the equipment frame 1 , the input end of the controller is electrically connected to the output end of the sensor of the metering mechanism 31 , and the output end of the controller is electrically connected to the input end of the telescopic mechanism 23 .

[0024] The telescopic mechanism 23 is an existing hydraulic or pneumatic telescopic rod. The extension or contraction of the telescopic mechanism 23 drives the rotary disc 22 to rotate along the bottom of the frame plate 4. When the feeding hopper 6 feeds the metering mechanism 31 at the set maximum inclination angle, as the material in the metering mechanism 31 is about to reach the rated weight, the metering mechanism 31 sends a signal to the controller to control the telescopic mechanism 23 to extend, and the rotary disc 22 will rotate under the drive of the telescopic mechanism 23, and the sprocket 16 will rotate under the action of the guide member, thereby driving the feeding hopper 6 to reduce its inclination angle under the action of the traction member. At the same time, the first valve plate 9 and the second valve plate 10 will rotate under the action of the linkage to reduce the opening and closing angle. At this time, the material in the feeding hopper 6 will be accurately fed to the metering mechanism 31 under the action of the electromagnetic vibrator 8.

[0025] During the feeding process, the silo 2 is first controlled to discharge the material into the feeding hopper 6 quickly, and at the same time, the feeding hopper 6 is tilted at a larger angle to feed the material into the metering mechanism 31. As the material weight is about to reach the standard, the opening and closing angles of the first valve plate 9 and the second valve plate 10 are adjusted to adjust the discharge speed of the silo 2. At the same time, the feeding speed of the feeding hopper 6 is adjusted by correspondingly controlling the tilt angle of the feeding hopper 6, thereby ensuring the accuracy of feeding while improving the feeding efficiency.

[0026] Specifically, Figure 2 As shown, the flexible pipe member includes a leather sleeve 7 connected between the feed hopper 6 and the frame plate 4 , and a bellows 25 connected between the frame plate 4 and the butt pipe 24 .

[0027] When the feed hopper 6 rotates along the elastic bracket 5, it is connected to the opening groove of the frame plate 4 through the flexible leather cover 7. When the docking pipe 24 moves in the vertical direction, it is connected to the opening groove of the frame plate 4 through the flexible corrugated pipe 25.

[0028] Specifically, Figure 5 and Figure 6 As shown, the guide member includes a rotating shaft 29 which is rotatably connected to the stand 15 and coaxially fixed with one of the sprockets 16. A sliding sleeve 26 is provided on the outer sliding sleeve of the rotating shaft 29. An arm 28 is rotatably connected between the rotating disk 22 and the sliding sleeve 26.

[0029] The inner wall of the sliding sleeve 26 is formed with a protrusion 27, and the side wall of the rotating shaft 29 is formed with a slide rail 30 for sliding with the protrusion 27. The slide rail 30 is composed of a spiral groove and a linear groove. When the protrusion 27 slides along the spiral groove, the rotating shaft 29 will rotate along the stand 15, and when the protrusion 27 slides along the linear groove, the rotating shaft 29 will remain stationary. The restriction of the linear groove by the protrusion 27 can effectively avoid the random rotation of the sprocket 16, and play a self-locking effect on the sprocket 16, thereby ensuring that the inclination angle of the feed hopper 6 remains stable, and the opening and closing angles of the first valve plate 9 and the second valve plate 10 are also kept stable. The stability of the sprocket 16 allows the inclination angle of the feed hopper 6 to be maintained within a relatively fixed range, which is very important for ensuring the stable supply of materials. The stable inclination angle of the feed hopper 6 can ensure that the material enters the subsequent processing link at a predetermined speed and amount, and avoid the material flow rate fluctuating due to the change of the angle of the feed hopper 6, which affects the production quality and efficiency.

[0030] In equipment that requires precise control of material flow or on-off, the opening and closing angles of the first valve plate 9 and the second valve plate 10 directly determine the flow of the material. A stable opening and closing angle can ensure that the flow state of the material in the pipeline or equipment meets the process requirements.

[0031] The sprocket 16 is self-locked by the restriction of the linear groove by the protrusion 27. This mechanical self-locking method is more stable and reliable than some other locking methods that rely on external power. In some harsh working environments, such as high temperature, high humidity, and high dust, the self-locking function of the mechanical structure is not easily disturbed by external factors and can play a role stably for a long time, reducing equipment failures and production accidents caused by locking failure.

[0032] During the feeding process of the feeding hopper 6, the butt joint 24 is always connected to the metering mechanism 31, so that the material can be prevented from being spilled out, thereby avoiding the phenomenon of material waste. After the feeding hopper 6 completes the feeding operation, as the feeding hopper 6 rotates to a horizontal state and stops conveying the material, the butt joint 24 will also be lifted upward from the metering mechanism 31 under the action of the electric telescopic rod.

[0033] Specifically, Figure 1-Figure 7 As shown, the traction member includes a sliding frame 18 slidably connected to the outside of the vertical frame 15 , and the sliding frame 18 is fixed to the chain 17 . When the sprocket 16 drives the chain 17 , the sliding frame 18 slides along the vertical frame 15 .

[0034] When the sprocket 16 rotates, the two sides of the chain 17 move synchronously in opposite directions. A hole groove is formed in the sliding frame 18 to match one side of the chain 17 , and the sliding frame 18 is fixed to the other side of the chain 17 .

[0035] A U-shaped frame 20 is fixedly provided on the feeding hopper 6 , a round block 21 is fixedly provided on the inner wall of the U-shaped frame 20 , and a slideway 19 for cooperating with the round block 21 to slide is formed on the side wall of the sliding frame 18 .

[0036] When the sliding frame 18 moves in the vertical direction, the slideway 19 will drive the feeding hopper 6 fixed to the U-shaped frame 20 to rotate along the elastic bracket 5 by pressing the side wall of the round block 21.

[0037] The elastic bracket 5 is composed of a bracket and a spring fixed between the bracket and the frame plate 4. An elastic buffer layer is provided between the U-shaped frame 20 and the fixed end surface of the feeding hopper 6 to reduce the vibration generated by the electromagnetic vibrator 8.

[0038] Specifically, Figure 2-Figure 4 As shown, the linkage includes a shaft rod 11 rotatably connected to the stand 15, the shaft rod 11 is coaxially fixed between the second valve plate 10 and the corresponding sprocket 16, and a meshing assembly is provided on the silo 2. When the second valve plate 10 rotates, the first valve plate 9 is driven to rotate synchronously through the meshing assembly.

[0039] When the sprocket 16 rotates, the second valve plate 10 will be driven to rotate synchronously through the shaft 11. At this time, the first valve plate 9 will drive the second valve plate 10 to rotate synchronously with it under the action of the meshing component, thereby realizing the control of the opening degree of the bottom of the silo 2.

[0040] The meshing assembly includes two pulleys 13 rotatably connected to the outside of the silo 2, and the outer meshing sleeves of the two pulleys 13 are provided with a transmission belt 14. A rotary sleeve 901 penetrating the silo 2 is coaxially fixed between one of the pulleys 13 and the first valve plate 9, and the rotary sleeve 901 is sleeved on the outside of the shaft 11. Two gears 12 corresponding to the pulleys 13 are provided on the outside of the silo 2, and the two gears 12 are meshed, one of the gears 12 is coaxially fixed with the shaft 11, and the other gear 12 is coaxially fixed with the corresponding pulley 13.

[0041] When the shaft 11 rotates, the gear 12 coaxially fixed with the shaft 11 will rotate synchronously. At this time, the two gears 12 located on the outside of the silo 2 will rotate synchronously. The pulley 13 coaxially fixed with one of the gears 12 will drive the other pulley 13 to rotate synchronously through the transmission belt 14. At this time, the first valve plate 9 will rotate synchronously in the opposite direction with the second valve plate 10 under the action of the rotating sleeve 901.

[0042] The cooperation of the gear 12 and the pulley 13 ensures the precision of synchronous reverse rotation of the first valve plate 9 and the second valve plate 10. This high-precision synchronous rotation is crucial for controlling the flow of materials and the opening and closing state of the valve, and can ensure that the opening and closing of the valve is accurate and timely, meeting the strict requirements of the production process for material control.

[0043] The above description of the embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A vibrating feeding device for powder filling, comprising a device frame (1), a material bin (2) mounted on the device frame (1), and a metering mechanism (31), characterized in that: The silo (2) is provided with an air hammer (3), the interior of the silo (2) is rotatably connected with a first valve plate (9) and a second valve plate (10), the bottom of the silo (2) is fixed with a frame plate (4) via a frame rod, the frame plate (4) is rotatably connected with a feed hopper (6) via an elastic bracket (5), an electromagnetic vibrator (8) is provided at the bottom of the feed hopper (6), the feed hopper (6) and the frame plate (4) are both provided with an open groove, the bottom of the frame plate (4) is provided with a butt joint pipe (24) which slides vertically, and the butt joint pipe (24) and the feed hopper (6) are connected to the open groove via a flexible pipe fitting; The bottom of the frame plate (4) is rotatably connected to a rotary disk (22) and a telescopic mechanism (23) for controlling the rotation of the rotary disk (22). A vertical frame (15) is fixedly provided in the frame plate (4). Two sprocket wheels (16) are rotatably connected to the vertical frame (15). Chains (17) are provided on the outer engaging sleeves of the two sprocket wheels (16). A guide member is provided at the bottom of the frame plate (4). When the rotary disk (22) rotates, the sprocket wheels (16) rotate under the action of the guide member. A traction member and a linkage member are provided on the vertical frame (15). When the sprocket wheels (16) rotate, the inclination angle of the feed hopper (6) is controlled by the traction member, and the opening and closing degree of the first valve plate (9) and the second valve plate (10) are controlled by the linkage member.

2. A vibrating feeding device for powder filling according to claim 1, characterized in that: The flexible pipe comprises a leather sleeve (7) connected between the feed hopper (6) and the frame plate (4), and a corrugated pipe (25) connected between the frame plate (4) and the butt pipe (24).

3. A vibrating feeding device for powder filling according to claim 1, characterized in that: The guide member comprises a rotating shaft (29) rotatably connected to the stand (15) and coaxially fixed to one of the sprockets (16); a sliding sleeve (26) is provided on the outer sliding sleeve of the rotating shaft (29); and an arm (28) is rotatably connected between the rotating disk (22) and the sliding sleeve (26).

4. A vibrating feeding device for powder filling according to claim 3, characterized in that: The inner wall of the sliding sleeve (26) is formed with a protrusion (27), and the side wall of the rotating shaft (29) is formed with a slide rail (30) for sliding with the protrusion (27), and the slide rail (30) is composed of a spiral groove and a linear groove. When the protrusion (27) slides along the spiral groove, the rotating shaft (29) will rotate along the stand (15), and when the protrusion (27) slides along the linear groove, the rotating shaft (29) will remain stationary.

5. The vibrating feeding device for powder filling according to claim 1, characterized in that: The traction member comprises a sliding frame (18) slidably connected to the outside of the vertical frame (15); the sliding frame (18) is fixed to the chain (17); when the sprocket (16) drives the chain (17), the sliding frame (18) slides along the vertical frame (15).

6. A vibrating feeding device for powder filling according to claim 5, characterized in that: A U-shaped frame (20) is fixedly provided on the feeding hopper (6), a round block (21) is fixedly provided on the inner wall of the U-shaped frame (20), and a slideway (19) for cooperating with the round block (21) to slide is formed on the side wall of the sliding frame (18).

7. A vibrating feeding device for powder filling according to claim 1, characterized in that: The linkage comprises a shaft (11) rotatably connected to a stand (15); the shaft (11) is coaxially fixed between a second valve plate (10) and a corresponding sprocket (16); a meshing assembly is provided on the silo (2); when the second valve plate (10) rotates, the meshing assembly drives the first valve plate (9) to rotate synchronously.

8. A vibrating feeding device for powder filling according to claim 7, characterized in that: The meshing assembly comprises two pulleys (13) rotatably connected to the outside of the silo (2); the outer meshing sleeves of the two pulleys (13) are provided with a transmission belt (14); a rotary sleeve (901) penetrating the silo (2) is coaxially fixed between one of the pulleys (13) and the first valve plate (9); the rotary sleeve (901) is sleeved on the outside of the shaft (11); two gears (12) corresponding to the pulleys (13) are provided on the outside of the silo (2); and the two gears (12) are meshed, one of the gears (12) is coaxially fixed to the shaft (11), and the other gear (12) is coaxially fixed to the corresponding pulley (13).

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