Mixture single-barrel spiral feeder with backflow prevention structure and method

Abstract

The invention belongs to the field of spiral feeders, and provides a mixture single-barrel spiral feeder with an anti-backflow structure and a method, the mixture single-barrel spiral feeder comprises a feeding barrel, a feeding pipe and a discharging pipe are arranged on the feeding barrel, rotating rods are rotatably mounted at the two ends of the interior of the feeding barrel, and fixed spiral blades are fixedly connected to the two rotating rods; a flexible shaft spiral blade is connected between the two fixed spiral blades, rubber edges are arranged on the fixed spiral blades and the flexible shaft spiral blade, the rubber edges are in interference fit with the inner side wall of the feeding barrel, and the blade pitch of the flexible shaft spiral blade is smaller than that of the fixed spiral blade. According to the feeding device, the flexible shaft spiral blade and the scattering mechanism are arranged, the flexible shaft spiral blade firstly extrudes a mixed material to loosen the caked mixed material, then the scattering mechanism scatters the caked part of the mixed material, the caked mixed material is thoroughly separated, the phenomena of bridging and blocking of the feeder are avoided, and the conveying stability and the conveying efficiency are improved.

Description

Technical Field

[0001] The present invention belongs to the field of spiral feeders, and in particular relates to a mixed material single-barrel spiral feeder with an anti-backflow structure and a method. Background Art

[0002] Faced with the increasing severity of today's environmental and energy issues and the increasing depletion of non-renewable fuels such as oil and coal, the development of highly efficient renewable energy sources and the realization of long-term sustainable energy development have become urgent priorities worldwide. Within the new energy sector, hydrogen energy, as an environmentally friendly clean energy source, offers advantages such as high energy density and high thermal conversion efficiency. Furthermore, its combustion product, water, is environmentally friendly. Consequently, the development and application of hydrogen energy are receiving increasing attention both domestically and internationally.

[0003] Among the many hydrogen production technologies, hydrolysis hydrogen production technology, especially the hydrolysis hydrogen production technology of active metals and their hydrides, such as Mg, Al, LiH, CaH2, MgH2, LiAlH4, NaBH4, etc., has attracted more and more attention in recent years.

[0004] In the existing hydrolysis hydrogen production technology, the most important step is the preparation of hydrogen production materials. The preparation process of hydrogen production materials generally includes material mixing, ball milling, packaging and other processes. After the mixed materials are ball milled, the materials need to be transported to the packaging machine for packaging. When in use, only the packaged materials need to be taken.

[0005] After the material is ball-milled, it is usually transported to a sealed packaging machine using a sealed screw feeder. However, the hydrolysis hydrogen production material after ball milling is easily agglomerated due to static electricity, humidity, increased surface energy or frictional heat, which will affect the stability of material transportation. In severe cases, it will cause bridging and blockage of the feeder during the spiral conveying process, affecting the conveying efficiency. Summary of the Invention

[0006] The purpose of the present invention is to provide a mixed material single-barrel spiral feeder and method with an anti-backflow structure, aiming to solve the technical problems of bridging and clogging of the feeder caused by material agglomeration and agglomeration in the prior art.

[0007] The invention is achieved in this way: a mixed material single-drum spiral feeder with an anti-backflow structure comprises a feeding barrel, the feeding barrel is provided with a feeding tube and a discharge tube, one end of the feeding tube is connected to a sealed material bin arranged below the drum ball mill, one end of the discharge tube is connected to the feed inlet of the sealing packaging machine. The two inner ends of the feeding barrel are rotatably installed with a rotating rod, the two rotating rods are fixedly connected to fixed spiral blades, and a soft shaft spiral blade is connected between the two fixed spiral blades. The fixed spiral blades and the soft shaft spiral blades are both provided with rubber edges, and the rubber edges are interference fit with the inner side walls of the feeding barrel, thereby sealing the fixed spiral blades and the soft shaft spiral blades to prevent the mixed material from flowing back from the gap between the fixed spiral blades and the feeding barrel, the blade pitch of the soft shaft spiral blade is smaller than the blade pitch of the fixed spiral blade, and a motor is fixedly installed at one end of the feeding barrel, and one end of the motor is fixedly connected to one end of a rotating rod;

[0008] The feeding barrel is also provided with a breaking up mechanism, the output end of which extends into between the spiral leaves of the soft shaft inside the feeding barrel, and the breaking up mechanism is used to break up the mixed material.

[0009] Further technical solution: the scattering mechanism includes a communication box fixedly connected to the side of the upper barrel and connected to the interior of the upper barrel, a mounting frame is fixedly installed on the side of the communication box, a fixing frame is fixedly installed on the side of the mounting frame, and an annular motion slide is provided on the fixing frame;

[0010] A sliding frame is installed on the mounting frame for sliding along the length direction of the mounting frame, and a first compression spring is connected between the side surface of the sliding frame and one end of the mounting frame close to the discharge pipe. A breaking rod is installed inside the sliding frame for sliding along the sliding direction perpendicular to the sliding frame, and one end of the breaking rod extending into the moving slide is fixedly connected to a protrusion, and the protrusion is slidably installed in the moving slide, and the other end of the breaking rod extends to the interior of the loading barrel, and the moving slide is provided with a first slit for the breaking rod to move, and the connecting box is provided with a second slit for the breaking rod to move. In order to ensure the sealing of the loading barrel, an elastic sealing membrane is provided between the breaking rod and the connecting box.

[0011] Further technical solution: The motion slide includes an insertion channel, an exit ramp and a retraction channel connected in sequence, the insertion channel is arranged perpendicular to the axis of the loading barrel, the exit ramp is arranged at an angle, and the retraction channel is arranged along the axis of the loading barrel. The insertion channel, exit ramp and retraction channel form a right-angled trapezoidal annular slide.

[0012] Further technical solution: the breaking mechanism further includes a grabbing assembly, which is mounted on a fixed frame above the end of the exit ramp, and is used to grab the convex head and transport the convex head to the retreat channel;

[0013] The grabbing assembly includes a first slide groove provided on the fixed frame, the first slide groove is located above the end of the exit ramp, one end of the first slide groove extends to the interior of the retraction channel, a permanent magnet block is slidably installed inside the first slide groove, the protrusion is made of permanent magnetic material, a vertical plate is fixedly connected to the top of the fixed frame, and a third compression spring is connected between one end of the vertical plate extending out of the fixed frame and the fixed frame.

[0014] Further technical solution: The breaking mechanism further includes a hammer pressing assembly, which is mounted on a fixing frame above the top of the insertion channel. When the protruding head returns to the insertion channel, the hammer pressing assembly is used to hammer the protruding head to the bottom of the insertion channel, so that the protruding head drives the breaking rod to be inserted into the spiral leaf of the flexible shaft;

[0015] The hammer pressing assembly includes a push rod slidably mounted on a fixed frame, the push rod is located above the top of the insertion channel, the top end of the push rod is fixedly connected to a gravity ball, and the bottom end of the push rod is fixedly connected to a push plate;

[0016] The hammering assembly also includes a limit assembly and a lifting structure. One end of the lifting structure is connected to the side of the sliding frame. The limit assembly is installed on the fixed frame. The output end of the limit assembly can be plugged into the push rod. When the sliding frame moves toward the lower material tube side, the lifting structure is used to drive the gravity ball and the push rod to rise, and make the push plate rise to above the top of the insertion channel. The limit assembly is used to fix the push rod on the fixed frame. When the protrusion returns to the insertion channel, the limit assembly releases the fixation of the push rod.

[0017] Further technical solution: The lifting structure includes an "L"-shaped connecting rod fixedly connected to the side of the sliding frame, and the end of the connecting rod is fixedly connected to an inclined guide ramp plate. A third slit is provided on the guide ramp plate to match the push rod, and the side of the guide ramp plate can contact the gravity ball.

[0018] Further technical solution: The limit assembly includes a fixed box fixedly installed on a fixed frame, a slider is slidably installed inside the fixed box, a second compression spring is connected between the slider and the fixed box, the side of the slider close to the insertion channel is fixedly connected with a collision block and a card block, the collision block extends to the interior of the insertion channel, the middle part of the collision block is aligned with the middle part of the retraction channel, and a slot is provided on the side of the push rod close to the card block, and the card block can be inserted into the slot to fix the push rod.

[0019] Further technical solution: A return air pipe is connected to the side of the connecting box, one end of the return air pipe is connected to the feeding pipe, and a filter is provided at one end of the return air pipe located inside the connecting box.

[0020] When the material is in a state of being compressed and moved, the hopper and the conveyor belt are rotated together, and the hopper and the conveyor belt are rotated together, and the hopper and the conveyor belt are rotated together, and the hopper and the conveyor belt are rotated together, and the hopper and the conveyor belt are rotated together, and the hopper and the conveyor belt are rotated together, and the hopper and the conveyor belt are rotated together, and the hopper and the conveyor belt are rotated together, and the hopper and the conveyor belt are rotated together, and the hopper and the conveyor belt are rotated together, and the hopper and the conveyor belt are rotated together, and the hopper and the conveyor belt are rotated together, and the hopper and the conveyor belt are rotated together, and the hopper and the conveyor belt are rotated together, and the hopper and the conveyor belt are rotated together, and the hopper and the conveyor belt are rotated together, and the hopper and the conveyor belt are rotated together, and the hopper and the conveyor belt are rotated together, and the hopper and the conveyor belt are rotated together, and the hopper and the conveyor belt are rotated together,

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. The present invention is provided with a flexible shaft spiral blade and a breaking mechanism. The flexible shaft spiral blade first squeezes the mixture to loosen the agglomerated mixture, and then the breaking mechanism breaks up the agglomerated parts of the mixture to completely separate the agglomerated mixture, thereby avoiding the phenomenon of bridging and clogging of the feeder and improving the conveying stability and conveying efficiency.

[0023] 2. The present invention provides an annular motion slideway and uses the soft shaft spiral blade as the power to make the breaking rod move in a circular motion along the motion slideway, thereby smoothly breaking up the mixed material without the need for electricity or program drive. The present invention greatly reduces the failure rate, and the breaking rod can automatically adapt to the rotation speed of the soft shaft spiral blade. When adjusting the feeding speed, there is no need to additionally adjust the breaking mechanism, which is more convenient to use.

[0024] 3. The present invention provides a grabbing assembly. After the convex head moves to the top of the exit ramp, the permanent magnet of the grabbing assembly will attract the convex head, so that the convex head and the scattering rod are suspended on the permanent magnet. Then, under the elastic thrust of the first compression spring, the scattering rod and the convex head will smoothly move into the retraction channel, thereby preventing the convex head from returning to the exit ramp again, so that the entire cyclic movement can proceed smoothly. This solves the problem that the convex head may retreat along the exit ramp due to a large gap between the end of the retraction channel and the top of the exit ramp, resulting in the convex head being stuck at the end of the exit ramp and then unable to complete the cyclic movement, thereby reducing the failure rate of the device.

[0025] 4. The present invention provides a hammer pressing assembly. When the protruding head returns to the insertion channel, the hammer pressing assembly will hammer the protruding head and press the protruding head to the bottom of the insertion channel, thereby allowing the breaking rod to be smoothly inserted between the spiral leaves of the flexible shaft, ensuring the smooth operation of the circular motion.

[0026] 5. The present invention provides an air return pipe, which connects the connecting box and the feeding pipe, so that the protective gas entering the box can be returned to the feeding pipe and the sealed silo, thereby avoiding the gradual decrease in air pressure in the sealed silo, which in turn causes the rubber edge to be subjected to axial gas pressure, shortening the service life of the rubber edge, and avoiding the backflow of the mixture. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0028] Figure 2 It is a schematic diagram of the overall cross-sectional structure of the present invention.

[0029] Figure 3 For the present invention Figure 2 Enlarged schematic diagram of point A in the middle.

[0030] Figure 4 For the present invention Figure 3 Enlarged schematic diagram of point B in the middle.

[0031] Figure 5 It is a schematic diagram of the local structure of the convex head moving to the top of the exit ramp in the present invention.

[0032] Figure 6 It is a schematic diagram of the partial cross-sectional structure of the grabbing assembly transporting boss in the present invention.

[0033] Figure 7 For the present invention Figure 6 Enlarged schematic diagram at point C in the middle.

[0034] Figure 8 For the present invention Figure 6 Enlarged schematic diagram at point D in the middle.

[0035] Figure 9 It is a schematic diagram of the installation structure of the fixed spiral blade and the flexible shaft spiral blade in the present invention.

[0036] In the accompanying drawings: 1. Motor; 2. Feeding pipe; 3. Air return pipe; 4. Breaking mechanism; 41. Connecting rod; 42. Guide ramp; 43. Fixing frame; 44. Connecting box; 45. Limiting assembly; 451. Slot; 452. Block; 453. Slider; 454. Fixing box; 455. Impact block; 456. Second compression spring; 46. Grasping assembly; 461. Third compression spring; 462. Vertical plate; 46 3. Permanent magnet; 464. First slide groove; 47. Gravity ball; 48. Push rod; 49. Push plate; 410. Protruding head; 411. Sliding frame; 412. Breaking rod; 413. First compression spring; 414. Mounting frame; 415. Retraction channel; 416. Insertion channel; 417. Exit ramp; 5. Loading barrel; 6. Discharging tube; 7. Rotating rod; 8. Fixed spiral blade; 9. Soft shaft spiral blade; 10. Rubber edge. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0038] The specific implementation of the present invention is described in detail below with reference to specific embodiments.

[0039] like Figures 1-9 The figure shows a mixed material single-cylinder spiral feeder with an anti-backflow structure provided by the present invention, including a feeding barrel 5, the feeding barrel 5 is provided with a feeding pipe 2 and a discharge pipe 6, one end of the feeding pipe 2 is connected to the sealed material bin arranged below the drum ball mill, and one end of the discharge pipe 6 is connected to the feed inlet of the sealing packaging machine. The internal ends of the feeding barrel 5 are rotatably installed with rotating rods 7, and the two rotating rods 7 are fixedly connected to fixed spiral leaves 8, and a soft shaft spiral leaf 9 is connected between the two fixed spiral leaves 8. The fixed spiral leaves 8 and the soft shaft spiral leaves 9 are both provided with rubber edges 10, and the rubber edges 10 are interference fit with the inner side walls of the feeding barrel 5, thereby sealing the fixed spiral leaves 8 and the soft shaft spiral leaves 9 to prevent the mixed material from flowing back from the gap between the fixed spiral leaves 8 and the feeding barrel 5. The blade pitch of the soft shaft spiral leaf 9 is smaller than the blade pitch of the fixed spiral leaf 8. One end of the feeding barrel 5 is fixedly installed with a motor 1, and one end of the motor 1 is fixedly connected to one end of a rotating rod 7;

[0040] The feeding barrel 5 is also provided with a breaking up mechanism 4 , the output end of which extends between the soft shaft spiral blades 9 inside the feeding barrel 5 , and the breaking up mechanism 4 is used to break up the mixed material.

[0041] After the drum ball mill finishes grinding the mixed material, the mixed material will be discharged into a sealed silo. The mixed material in the sealed silo will enter the feeding barrel 5 through the feeding pipe 2. The motor 1 is started, and the motor 1 drives the rotating rod 7 to rotate. The rotating rod 7 drives the fixed spiral blade 8 to rotate. The fixed spiral blade 8 drives the flexible shaft spiral blade 9 and another fixed spiral blade 8 to rotate together, so that the mixed material can be transported to the feeding port of the sealing packaging machine. The sealing packaging machine packages every 100g of mixed material with an error of no more than ±5g.

[0042] When the mixed material is transported, when the mixed material moves from the fixed spiral blade 8 to the flexible shaft spiral blade 9, since the blade pitch of the flexible shaft spiral blade 9 is smaller than the blade pitch of the fixed spiral blade 8, the distance between the two adjacent blades on the flexible shaft spiral blade 9 is shorter and the space is smaller. When the mixed material moves from the large space to the small space, the shape of the mixed material changes. Since the distance between the two adjacent blades of the flexible shaft spiral blade 9 is narrow, the flexible shaft spiral blade 9 will squeeze the axial thickness of the mixed material, so that the mixed material will gradually increase in height upwards, resulting in the mutual movement between the mixed materials, thereby The agglomerated mixture is loosened, and at the same time, the output end of the breaking up mechanism 4 will be inserted between the blades of the soft shaft spiral leaf 9, and the output end of the breaking up mechanism 4 will move axially with the blades of the soft shaft spiral leaf 9, and gradually exit the feeding barrel 5. Since the breaking up mechanism 4 moves in a vertical plane, the mixture rotating with the soft shaft spiral leaf 9 will also move relative to the output end of the breaking up mechanism 4, so that the output end of the breaking up mechanism 4 will break up the agglomerated parts of the mixture, completely separate the agglomerated parts, avoid the phenomenon of bridging and clogging of the feeder, and improve the conveying stability and efficiency.

[0043] The present invention provides a mixed material single-barrel spiral feeder with an anti-backflow structure. In this embodiment, the dispersing mechanism 4 includes a communication box 44 fixedly connected to the side of the feeding barrel 5 and communicating with the interior of the feeding barrel 5. A mounting frame 414 is fixedly installed on the side of the communication box 44. A fixing frame 43 is fixedly installed on the side of the mounting frame 414. The fixing frame 43 is provided with an annular motion slide.

[0044] A sliding frame 411 is slidably installed on the mounting frame 414 along the length direction of the mounting frame 414, and a first compression spring 413 is connected between the side of the sliding frame 411 and the end of the mounting frame 414 close to the discharge pipe 6. A breaking rod 412 is slidably installed inside the sliding frame 411 along the sliding direction perpendicular to the sliding frame 411, and the breaking rod 412 is fixedly connected to the end of the moving slide that extends into the motion slide with a protrusion 410, and the protrusion 410 is slidably installed in the motion slide, and the other end of the breaking rod 412 extends to the interior of the loading barrel 5, and the motion slide is provided with a first slit for the breaking rod 412 to move, and the connecting box 44 is provided with a second slit for the breaking rod 412 to move. In order to ensure the sealing of the loading barrel 5, an elastic sealing membrane is provided between the breaking rod 412 and the connecting box 44.

[0045] The cam 410 is then released from the drawer 412 and the cam 411 is released, and the cam 412 is released from the drawer 412 and the cam 411 is released, and the cam 411 is released, and the cam 411 is released, and the cam 411 is released, and the cam 411 is released, and the cam 411 is released, and the cam 411 is released, and the cam 411 is released, and the cam 411 is released, and the cam 411 is released, and the cam 411 is released, and the cam 411 is released, and the cam 411 is released, and the cam 411 is released, and the cam 411 is released, and the cam 411 is released, and the cam

[0046] The present invention provides a single-barrel spiral feeder for mixed materials with an anti-backflow structure. In this embodiment, the moving slide includes an insertion channel 416, an exit ramp 417 and a retraction channel 415 connected in sequence. The insertion channel 416 is arranged perpendicular to the axis of the feeding barrel 5, the exit ramp 417 is arranged at an angle, and the retraction channel 415 is arranged along the axis of the feeding barrel 5. The insertion channel 416, the exit ramp 417 and the retraction channel 415 form a right-angled trapezoidal annular slide.

[0047] Specifically, the breaking rod 412 is inserted into the loading barrel 5 at the insertion channel 416. When the soft shaft spiral leaf 9 drives the breaking rod 412 to move, the protruding head 410 moves obliquely upward along the exit ramp 417, so that one end of the breaking rod 412 is withdrawn from between the soft shaft spiral leaves 9. When the protruding head 410 moves to the end of the exit ramp 417, under the thrust of the first compression spring 413, the protruding head 410 will slide into the retreat channel 415 and move into the insertion channel 416 again, forming a movement cycle.

[0048] The present invention provides a single-barrel spiral feeder for mixing materials with an anti-backflow structure. Since a large gap is left between the end of the retraction channel 415 and the top of the exit ramp 417, when the protruding head 410 retracts, the protruding head 410 may retract along the exit ramp 417 instead of retracting into the retraction channel 415. At this time, one end of the scattering rod 412 will be inserted into the soft shaft spiral leaf 9 again, and the soft shaft spiral leaf 9 will continue to drive the scattering rod 412 to move, causing the protruding head 410 to be stuck at the end of the exit ramp 417, and then unable to complete the circular motion. Therefore, in this embodiment, the scattering mechanism 4 also includes a grabbing assembly 46, which is installed on the fixing frame 43 above the end of the exit ramp 417. The grabbing assembly 46 is used to grab the protruding head 410 and transport it to the retraction channel 415;

[0049] The grabbing assembly 46 includes a first slide groove 464 opened on the fixed frame 43, the first slide groove 464 is located above the end of the exit ramp 417, one end of the first slide groove 464 extends to the interior of the retraction channel 415, a permanent magnet block 463 is slidably installed inside the first slide groove 464, the protrusion 410 is made of permanent magnetic material, the top of the fixed frame 43 is fixedly connected to a vertical plate 462, and a third compression spring 461 is connected between one end of the vertical plate 462 extending out of the fixed frame 43 and the fixed frame 43.

[0050] Specifically, the suction force between the permanent magnet block 463 and the convex head 410 is greater than the gravity of the scattering rod 412 and the convex head 410. When the convex head 410 moves along the exit ramp 417 to the top of the exit ramp 417, the convex head 410 is attracted by the permanent magnet block 463, so that the convex head 410 and the scattering rod 412 are suspended on the permanent magnet block 463. Under the elastic thrust of the first compression spring 413, the sliding frame 411 drives the scattering rod 412 and the convex head 410 to move along the retreat channel 415. 0 drives the permanent magnet block 463 to move into the retraction channel 415. When the permanent magnet block 463 is blocked by the first slide groove 464, the breaking rod 412 pushes the protruding head 410 and the permanent magnet block 463 to separate, so that the protruding head 410 returns to the insertion channel 416. Under the elastic force of the third compression spring 461, the permanent magnet block 463 returns to the initial position, which is convenient for the next transportation of the protruding head 410, thereby preventing the protruding head 410 from returning to the exit ramp 417 again, so that the whole cycle movement can proceed smoothly.

[0051] The present invention provides a single-cylinder spiral feeder for mixed materials with an anti-backflow structure. Due to the presence of the grabbing assembly 46, the weight of the convex head 410 cannot be set too large, otherwise, the permanent magnet block 463 cannot suck up the convex head 410, and due to the large resistance of the mixed material in the soft shaft spiral leaf 9, the convex head 410 with a smaller weight cannot be inserted into the mixed material in the soft shaft spiral leaf 9 by itself. Therefore, in this embodiment, the scattering mechanism 4 also includes a hammer pressing assembly, which is installed on the fixing frame 43 above the top of the insertion channel 416. When the convex head 410 returns to the insertion channel 416, the hammer pressing assembly is used to hammer the convex head 410 to the bottom of the insertion channel 416, so that the convex head 410 drives the scattering rod 412 to insert into the soft shaft spiral leaf 9;

[0052] The hammer pressing assembly includes a push rod 48 slidably mounted on a fixing frame 43. The push rod 48 is located above the top of the insertion channel 416. The top end of the push rod 48 is fixedly connected to a gravity ball 47, and the bottom end of the push rod 48 is fixedly connected to a push plate 49.

[0053] The hammering assembly also includes a limit assembly 45 and a lifting structure, one end of the lifting structure is connected to the side of the sliding frame 411, and the limit assembly 45 is installed on the fixing frame 43. The output end of the limit assembly 45 can be plugged into the push rod 48. When the sliding frame 411 moves toward the lower material tube 6 side, the lifting structure is used to drive the gravity ball 47 and the push rod 48 to rise, and make the push plate 49 rise to above the top of the insertion channel 416. The limit assembly 45 is used to fix the push rod 48 on the fixing frame 43. When the protrusion 410 returns to the insertion channel 416, the limit assembly 45 releases the fixation of the push rod 48. Under the gravity of the gravity ball 47, the push rod 48 drives the push plate 49 to hammer the protrusion 410, and hammers the protrusion 410 to the bottom of the insertion channel 416, thereby inserting the breaking rod 412 between the soft shaft spiral leaves 9.

[0054] The present invention provides a single-barrel spiral feeder for mixed materials with an anti-backflow structure. In this embodiment, the lifting structure includes an "L"-shaped connecting rod 41 fixedly connected to the side of the slide frame 411, and the end of the connecting rod 41 is fixedly connected to an inclined guide ramp 42. A third slit is provided on the guide ramp 42 to match the push rod 48, and the side of the guide ramp 42 can contact the gravity ball 47.

[0055] Specifically, at the beginning, Figure 4As shown, the sliding frame 411 is located at the leftmost side of the fixing frame 43, and the surface of the guide inclined plate 42 contacts the surface of the gravity ball 47. When the soft shaft spiral leaf 9 drives the breaking rod 412 to move synchronously, the breaking rod 412 drives the sliding frame 411 and the connecting rod 41 to move, and the connecting rod 41 drives the guide inclined plate 42 to squeeze the gravity ball 47, so that the gravity ball 47 moves relative to the inclined guide inclined plate 42, and then pushes the gravity ball 47 up. When the protruding head 410 moves to the end of the exit ramp 417, the limiting assembly 45 just pushes the ball The rod 48 is fixed, that is, in the process of the sliding frame 411 driving the connecting rod 41 and the guide inclined plate 42 to retreat, the guide inclined plate 42 and the gravity ball 47 are separated, and the push rod 48 is always fixed on the fixing frame 43. After the protrusion 410 retreats into the insertion channel 416, the protrusion 410 will hit the input end of the limit assembly 45, thereby releasing the fixation of the limit assembly 45 on the push rod 48, and the gravity ball 47 presses the push rod 48 to descend, and the push rod 48 drives the protrusion 410 and the breaking rod 412 to descend through the push plate 49, completing the cycle.

[0056] The present invention provides a single-barrel spiral feeder for mixed materials with an anti-backflow structure. In this embodiment, the limiting assembly 45 includes a fixed box 454 fixedly mounted on a fixed frame 43, and a slider 453 is slidably mounted inside the fixed box 454. A second compression spring 456 is connected between the slider 453 and the fixed box 454. The slider 453 is fixedly connected to a collision block 455 and a clamping block 452 on the side near the insertion channel 416. The collision block 455 extends to the interior of the insertion channel 416, and the middle part of the collision block 455 is aligned with the middle part of the retraction channel 415. A slot 451 is provided on the side of the push rod 48 near the clamping block 452, and the clamping block 452 can be inserted into the slot 451 to fix the push rod 48.

[0057] Specifically, when the gravity ball 47 and the push rod 48 are raised, after the slot 451 moves to the side of the block 452, under the action of the second compression spring 456, the slider 453 drives the block 452 to be inserted into the slot 451. At the same time, the impact block 455 extends into the insertion channel 416. When the protrusion 410 retreats and hits the impact block 455, the impact block 455 drives the slider 453 away from the fixing frame 43, and the slider 453 drives the block 452 to be pulled out of the slot 451, thereby releasing the fixed state of the push rod 48, so that the gravity ball 47 can drive the push rod 48 and the push plate 49 to descend.

[0058] The present invention provides a mixed material single-cylinder spiral feeder with an anti-backflow structure. Since the drum-type ball mill and the sealed silo are both in a sealed state, and in order to prevent the mixed material from flowing back, a rubber edge 10 is provided, so that the space between the blades of the fixed spiral blade 8 and the feeding barrel 5 is also in a sealed state. After the mixed material in the feeding pipe 2 flows into the feeding barrel 5, the protective gas in the drum-type ball mill and the sealed silo will flow into the feeding barrel 5 synchronously, and the fixed spiral blade 8 will transport the mixed material together with the protective gas to the sealing packaging machine. When the gas is gradually extracted, the mixed material in the feeding pipe 2 will flow into the feeding barrel 5. After separation, since the gas in the sealed silo is not replenished, the air pressure in the sealed silo gradually decreases, and then the rubber edge 10 is not only subjected to the friction of the inner wall of the loading barrel 5, but also subjected to axial gas pressure, shortening the life of the rubber edge 10, causing the rubber edge 10 to be damaged prematurely, and the mixture in the loading barrel 5 will flow back again. Therefore, in this embodiment, the side of the connecting box 44 is connected to the return air pipe 3, one end of the return air pipe 3 is connected to the loading pipe 2, and the end of the return air pipe 3 located inside the connecting box 44 is provided with a filter.

[0059] Specifically, when the mixture and the protective gas move together to the soft shaft spiral blade 9, the gas will be squeezed into the connecting box 44 by the blades of the soft shaft spiral blade 9. The gas in the connecting box 44 will flow into the feeding pipe 2 through the return air pipe 3, replenishing the gas in the sealed silo, reducing the force of the gas pressure on the rubber edge 10, and extending the service life of the rubber edge 10.

[0060] By using the above-mentioned method of the mixed material single-cylinder spiral feeder with anti-backflow structure, the bulk material enters the feeding barrel 5 from the feeding pipe 2, the motor 1 drives the rotating rod 7 and the fixed spiral blade 8 to rotate, and the fixed spiral blade 8 drives the bulk material to be transported upward. When the bulk material moves to the soft shaft spiral blade 9, the soft shaft spiral blade 9 squeezes the bulk material to loosen the agglomerated material. At the same time, the breaking rod 412 is inserted between the soft shaft spiral blades 9 in the feeding barrel 5, and the breaking rod 412 and the bulk material move relative to each other to break up the agglomerated material. At the same time, the soft shaft spiral leaves 9 will also drive the breaking rod 412 to move synchronously. Under the action of the exit ramp 417, the breaking rod 412 will gradually withdraw from between the soft shaft spiral leaves 9. When the breaking rod 412 and the blades of the soft shaft spiral leaves 9 are separated, under the action of the first compression spring 413, the breaking rod 412 returns to the initial position, and it will be squeezed between the soft shaft spiral leaves 9 again by the hammer pressure assembly. The breaking mechanism 4 can cyclically break up the agglomerates of bulk materials, reduce the agglomeration rate of the materials, and avoid bridging and blockage of the feeding barrel 5.

[0061] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

[0062] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A mixed material single-barrel spiral feeder with an anti-backflow structure, comprising a feeding barrel, a feeding pipe and a discharge pipe provided on the feeding barrel, characterized in that: Rotating rods are rotatably installed at both ends of the inner part of the loading barrel, and fixed spiral leaves are fixedly connected to the two rotating rods. A soft shaft spiral leaf is connected between the two fixed spiral leaves, and rubber edges are provided on the fixed spiral leaves and the soft shaft spiral leaves. The rubber edges are interference fit with the inner side wall of the loading barrel, and the blade pitch of the soft shaft spiral leaf is smaller than the blade pitch of the fixed spiral leaf. A motor is fixedly installed at one end of the loading barrel, and one end of the motor is fixedly connected to one end of a rotating rod; The feeding barrel is also provided with a breaking up mechanism, the output end of which extends into between the spiral leaves of the soft shaft inside the feeding barrel, and the breaking up mechanism is used to break up the mixed material.

2. The mixed material single-barrel screw feeder with an anti-backflow structure according to claim 1 is characterized in that: The scattering mechanism includes a communication box fixedly connected to the side of the upper barrel and connected to the interior of the upper barrel, a mounting frame fixedly installed on the side of the communication box, a fixing frame fixedly installed on the side of the mounting frame, and an annular motion slideway is opened on the fixing frame; A sliding frame is slidably installed on the mounting frame, a first compression spring is connected between the sliding frame and the mounting frame, a breaking rod is slidably installed inside the sliding frame, one end of the breaking rod extending into the motion slide is fixedly connected to a protrusion, the protrusion is slidably installed in the motion slide, and the other end of the breaking rod extends to the interior of the loading barrel.

3. The mixed material single-barrel spiral feeder with an anti-backflow structure according to claim 2, characterized in that: The motion slideway comprises an insertion channel, an exit ramp and a retraction channel which are connected in sequence.

4. The mixed material single-barrel spiral feeder with an anti-backflow structure according to claim 3 is characterized in that: The dispersing mechanism also includes a grabbing assembly, which includes a first slide groove opened on the fixed frame, the first slide groove is located above the end of the exit ramp, one end of the first slide groove extends to the interior of the retraction channel, a permanent magnet block is slidably installed inside the first slide groove, the protrusion is made of permanent magnetic material, the top of the fixed frame is fixedly connected to a vertical plate, and a third compression spring is connected between one end of the vertical plate extending out of the fixed frame and the fixed frame.

5. The mixed material single-barrel spiral feeder with anti-backflow structure according to claim 3, characterized in that: The breaking mechanism further includes a hammer pressing assembly, which includes a push rod slidably mounted on a fixed frame, the push rod being located above the top of the insertion channel, the top end of the push rod being fixedly connected to a gravity ball, and the bottom end of the push rod being fixedly connected to a push plate; The hammering assembly also includes a limit assembly and a lifting structure. One end of the lifting structure is connected to the side of the sliding frame. The limit assembly is installed on the fixed frame. The output end of the limit assembly can be plugged into the push rod. When the sliding frame moves toward the lower material tube side, the lifting structure is used to drive the gravity ball and the push rod to rise. When the push plate rises above the top of the insertion channel, the limit assembly is used to fix the push rod on the fixed frame. When the protrusion returns to the insertion channel, the limit assembly releases the fixation of the push rod.

6. The mixed material single-barrel screw feeder with an anti-backflow structure according to claim 5, characterized in that: The lifting structure includes a connecting rod fixedly connected to the side of the sliding frame, and the end of the connecting rod is fixedly connected to an inclined guide inclined plate.

7. The mixed material single-barrel screw feeder with an anti-backflow structure according to claim 5, characterized in that: The limiting assembly includes a fixed box fixedly mounted on a fixed frame, a slider is slidably mounted inside the fixed box, a second compression spring is connected between the slider and the fixed box, an impact block and a clamping block are fixedly connected to the side of the slider, the impact block extends to the interior of the insertion channel, and a clamping slot is provided on the side of the push rod close to the clamping block, and the clamping block can be inserted into the clamping slot.

8. The mixed material single-barrel spiral feeder with an anti-backflow structure according to claim 2, characterized in that: A side surface of the connecting box is connected with an air return pipe, and one end of the air return pipe is connected with the feeding pipe.

9. A method for using the mixed material single-drum spiral feeder with an anti-backflow structure according to any one of claims 5 to 8, characterized in that: The bulk material enters the feeding barrel from the feeding pipe, and the motor drives the rotating rod and the fixed spiral blade to rotate. The fixed spiral blade drives the bulk material to be transported upward. When the bulk material moves to the soft shaft spiral blade, the soft shaft spiral blade squeezes the bulk material to loosen the agglomerated material. At the same time, the breaking rod is inserted between the soft shaft spiral blades in the feeding barrel. The breaking rod breaks up the agglomerated material. At the same time, the soft shaft spiral blade drives the breaking rod to move. Under the action of the exit ramp, the breaking rod gradually withdraws from between the soft shaft spiral blades. When the breaking rod and the blades of the soft shaft spiral blade are separated, the breaking rod returns to its initial position, and then the breaking rod is squeezed between the soft shaft spiral blades again by the hammer pressing assembly, and the cycle repeats.

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