Automatic feeding structure of flash dryer

Abstract

The utility model relates to a kind of automatic feeding structure of flash drying machine, and the bottom of storage tank is vertically fixed and is communicated with conveying pipe, conveying pipe bottom is fixed and is communicated with feed pipe, and discharge pipe is fixedly installed in the middle end of transmission frame side edge, and the bottom of feed pipe and the top of discharge pipe are fixed and are communicated, intermittent transmission mechanism is arranged in the inside of transmission frame, pusher mechanism is arranged in the inside of discharge pipe, pusher mechanism and intermittent transmission mechanism are connected, protective cover plate is hinged on the top of transmission frame by pivot, hand-pulling frame is fixedly installed on the top of protective cover plate, limit plate is fixedly installed on the end of transmission frame inside close to discharge pipe, pusher plate is fixedly installed on the side of each movable rod away from limit plate, the utility model can make that overall feeding mechanism can realize intermittent feeding, avoid that a large number of materials are excessively accumulated in the inside of flash drying machine after a large number of materials are caused by one-time disposable feeding too much, influence the drying efficiency and drying quality of material of flash drying machine.

Description

Technical Field

[0001] This utility model relates to the field of flash dryer technology, specifically to an automatic feeding structure for a flash dryer. Background Technology

[0002] Flash dryers are a new type of continuous drying equipment that integrates drying, crushing, and screening. Hot air enters the bottom of the dryer tangentially and forms a powerful rotating airflow under the action of the agitator. Pasty materials enter the dryer through a screw feeder. Under the strong action of the high-speed rotating agitator, the materials are dispersed by impact, friction, and shear stress. Lumpy materials are rapidly crushed and fully contacted with the hot air for heating and drying. The dehydrated dry materials rise with the hot airflow. The grading ring retains large particles, while small particles are discharged from the center of the ring and recovered by the cyclone separator and dust collector. Incompletely dried or large pieces of material are thrown against the wall by centrifugal force and fall back to the bottom to be crushed and dried again.

[0003] In practical applications, when using flash dryers to pulverize and dry materials, a corresponding feeding structure is often used to convey the material to be pulverized and dried from the flash dryer's inlet. While flash dryers offer a high pulverization and drying rate, the continuous feeding of large quantities of material through the feed pipe leads to excessive material accumulation inside the flash dryer. This results in excessive pulverization and drying intensity within the flash dryer itself, and the inability to accurately control the drying degree of material at different accumulation points. Consequently, the excessively accumulated material results in insufficient pulverization and drying quality, reducing the overall pulverization and drying efficiency. Therefore, a new technical solution is needed to address this issue. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology, adapt to practical needs, and provide an automatic feeding structure for a flash dryer. This solves the technical problem that when materials are conveyed and fed through a feeding pipe, a large amount of material is continuously fed at once, resulting in excessive material accumulation inside the flash dryer. This leads to excessive crushing and drying intensity of the flash dryer itself, while the drying degree of materials at different accumulation positions cannot be accurately controlled, resulting in insufficient crushing and drying quality of the excessively accumulated material and reduced crushing and drying efficiency.

[0005] To achieve the purpose of this utility model, the technical solution adopted by this utility model is as follows: design an automatic feeding structure for a flash dryer, including a storage tank and a transmission frame. The bottom of the storage tank is vertically connected to a conveying pipe, the bottom of the conveying pipe is fixedly connected to a feeding pipe, and the middle side of the transmission frame is fixedly installed with a discharge pipe, and the bottom of the feeding pipe and the top of the discharge pipe are fixedly connected.

[0006] An intermittent transmission mechanism is provided inside the transmission frame, and a pushing mechanism is provided inside the discharge pipe. The pushing mechanism and the intermittent transmission mechanism are connected. A protective cover plate is hinged to the top of the transmission frame via a rotating shaft, and a hand-operated frame is fixedly installed on the top of the protective cover plate.

[0007] Preferably, the pushing mechanism includes a pushing plate, a limiting plate is fixedly installed inside the transmission frame near the end of the discharge pipe, a movable rod is slidably inserted through the middle of the limiting plate, and a pushing plate is fixedly installed on the side of each movable rod away from the limiting plate.

[0008] Preferably, a hollow tube is movably sleeved on the side of the movable rod away from the pusher plate, a limit baffle is fixedly installed on the side of the hollow tube near the limit plate, and a push spring is movably sleeved on the outside of the movable rod.

[0009] Preferably, the intermittent transmission mechanism includes a transmission cam and a follower roller. A mounting plate is fixedly installed on the side of the hollow tube away from the limiting plate. A fixing frame is fixedly installed on the side of the mounting plate. An I-shaped rod is rotatably installed inside the fixing frame through a bearing. The follower roller is fixedly sleeved on the outer side of the middle end of the I-shaped rod.

[0010] Preferably, a transmission rod is vertically rotatably mounted inside the transmission frame on the side away from the storage tank via a bearing. A transmission sleeve is movably sleeved on the outside of the transmission rod. A transmission cam is fixedly sleeved on the outside of the transmission sleeve, and the outer side of the follower roller is movably attached to the outer side wall of the transmission cam. A rotating motor is fixedly mounted at the bottom of the transmission frame, and the top of the rotating motor's transmission shaft is fixedly connected to the bottom of the transmission rod via a coupling.

[0011] Preferably, a first connecting screw hole is provided at both ends of the outer side of the hollow tube, and a second connecting screw hole is provided inside the top side of the movable rod. A connecting bolt is slidably inserted between the first connecting screw hole and the second connecting screw hole. A limit nut is threadedly screwed onto the top side of the connecting bolt. A fastening bolt is slidably inserted through the transmission rod and the transmission sleeve. A fastening nut is threadedly screwed onto the side end of the fastening bolt.

[0012] Preferably, a control valve is fixedly installed at the bottom of the conveying pipe, the bottom discharge port of the control valve is fixedly connected to the top of the feed pipe, a connecting frame is fixedly sleeved on the outside of the discharge pipe, and the feed pipe passes through the inside of the top of the connecting frame and is fixedly connected to the top of the discharge pipe.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. This utility model features a rotatable transmission cam inside a transmission frame, along with a horizontally movable rod and a hollow tube. A follower roller is rotatably positioned outside the hollow tube using an I-beam, and its side is attached to the outside of the transmission cam. When the rotating motor drives the transmission cam to rotate within the transmission frame, the position of the transmission cam against the outside of the follower roller changes. Consequently, the driving force provided by the transmission cam to the follower roller also changes. When the follower roller is against the outer arc surface of the transmission cam, the transmission cam can no longer provide the corresponding horizontal driving force, thus affecting the movement of the roller within the hollow tube and the hollow tube. Under the connecting transmission of the rod, the pusher plate located inside the discharge pipe cannot move horizontally to push the material. After the transmission cam rotates and its convex arc surface contacts the follower roller, it can provide the follower roller with the corresponding horizontal pushing force as the transmission cam rotates. This causes the follower roller to move horizontally to the right, which in turn drives the pusher plate to move horizontally inside the discharge pipe. This pushes the material accumulated inside the discharge pipe into the flash dryer, thus enabling the entire feeding mechanism to achieve intermittent feeding. This avoids excessive material being added at one time, which would cause a large amount of material to accumulate excessively inside the flash dryer, affecting the drying efficiency and quality of the flash dryer.

[0015] 2. This utility model features a transmission sleeve inside the transmission cam, connected to the transmission rod via fastening bolts and nuts. This allows the operator to disassemble the transmission cam and adapt its shape and arc circumference for different applications when the transmission rod rotates, driving the transmission cam to rotate. Furthermore, by connecting bolts, the hollow tube can be adjusted to fit the outer side of the movable rod. This ensures that even after replacing the transmission cam, the sidewall of the follower roller remains in contact with the outer wall of the transmission cam. This allows transmission cams of different shapes and sizes to consistently provide horizontal thrust to the follower roller during rotation, thereby enabling adjustments to the transmission cam's ability to handle material feeding intervals and further improving the overall mechanism's adaptability to intermittent material feeding. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0017] Figure 2 This is a schematic diagram of the internal structure of the transmission frame of this utility model;

[0018] Figure 3 This is a schematic diagram of the overall structure of the follower roller and pusher plate of this utility model;

[0019] Figure 4 This is a schematic diagram of the internal structure of the hollow tube and movable rod of this utility model;

[0020] In the diagram: 1. Storage tank; 11. Transmission frame; 12. Discharge pipe; 13. Connecting frame; 14. Feed pipe; 15. Conveying pipe; 16. Control valve; 17. Protective cover; 18. Hand-operated frame;

[0021] 2. Transmission rod; 21. Transmission sleeve; 22. Transmission cam; 23. Limiting plate; 24. Movable rod; 25. Hollow tube; 26. Mounting plate; 27. Fixed frame; 28. I-shaped rod; 29. ​​Follower roller;

[0022] 3. Push spring; 31. Rotating motor; 32. Push plate; 33. Limiting baffle;

[0023] 4. Tighten bolts; 41. Tighten nuts;

[0024] 5. First connecting screw hole; 51. Second connecting screw hole; 52. Connecting bolt; 53. Limit nut. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0026] Example 1: An automatic feeding structure for a flash dryer, see [link / reference] Figures 1 to 4 The storage tank is vertically connected to a conveying pipe at its bottom, and a feed pipe is fixedly connected to the bottom of the conveying pipe. A discharge pipe is fixedly installed at the middle of the side of the transmission frame, and the bottom of the feed pipe and the top of the discharge pipe are fixedly connected. A control valve is fixedly installed at the bottom of the conveying pipe, and the discharge port at the bottom of the control valve is fixedly connected to the top of the feed pipe. A connecting frame is fixedly sleeved on the outside of the discharge pipe, and the feed pipe passes through the top of the connecting frame and is fixedly connected to the top of the discharge pipe.

[0027] When a flash dryer is needed to pulverize and dry materials, the materials to be processed are poured into the storage tank. Then, the discharge pipe is connected to the feed inlet of the flash dryer, with the discharge pipe positioned on the outside of the flash dryer, lower on the left and higher on the right. The control valve is opened by an external controller, allowing the materials to move down from the storage tank under gravity and accumulate inside the discharge pipe. The materials can then be positioned on the right side of the pusher plate.

[0028] For details, see Figures 1 to 4 The top of the transmission frame is hinged to a protective cover plate via a pivot. The protective cover plate has a locking buckle on its side so that it can be stably attached to the top of the transmission frame to protect the internal components. A pull frame is fixedly installed on the top of the protective cover plate.

[0029] Further, see Figures 1 to 4A mounting plate is fixedly installed on the side of the hollow tube away from the limiting plate. A fixing frame is fixedly installed on the side of the mounting plate. An I-shaped rod is rotatably installed inside the fixing frame through a bearing. A follower roller is fixedly sleeved on the outer side of the middle end of the I-shaped rod. A transmission rod is vertically rotatably installed inside the transmission frame away from the storage tank through a bearing. A transmission sleeve is movably sleeved on the outer side of the transmission rod. A transmission cam is fixedly sleeved on the outer side of the transmission sleeve, and the outer side of the follower roller is movably attached to the outer side wall of the transmission cam. A rotating motor is fixedly installed at the bottom of the transmission frame, and the top of the rotating motor's transmission shaft is fixedly connected to the bottom of the transmission rod through a coupling.

[0030] The rotating motor is turned on by an external controller, causing the transmission rod to rotate. Through the connection of the fastening bolts and nuts, the transmission sleeve rotates synchronously with the transmission rod. This, in turn, causes the transmission cam to rotate within the transmission frame. During rotation, the transmission cam adjusts its position relative to the outer side of the follower roller. As the transmission cam rotates, the follower roller moves from the arc surface of the transmission cam to the convex arc surface, providing a corresponding pushing force. This causes the follower roller to move the hollow tube synchronously to the right. Subsequently, through the connection of the bolts, the movable rod sleeved inside the hollow tube moves to the right, causing the pusher plate to move synchronously with the transmission. The rotation of the moving cam causes it to move to the right inside the discharge pipe, pushing the material accumulated inside the discharge pipe during this rightward movement. This allows the material to be automatically conveyed into the flash dryer. The continuous rotation of the drive cam causes the follower roller to move from its convex arc surface to the outer arc wall. Once the drive cam loses its thrust on the follower roller, combined with the reverse restoring force of the push spring, the movable rod can drive the pusher plate to move to the left. When the side arc surface of the drive cam is in contact with the outer wall of the follower roller, the drive cam cannot provide the follower roller with the corresponding horizontal thrust. Therefore, under the connecting transmission action of the hollow tube and the movable rod, the pusher plate located inside the discharge pipe cannot move horizontally to push the material, thus achieving intermittent feeding of the material.

[0031] It is worth noting that, see Figures 1 to 4 A limiting plate is fixedly installed inside the transmission frame near the discharge pipe. A movable rod is slidably inserted through the middle of the limiting plate. The side end of the movable rod extends through the side of the transmission frame and moves into the discharge pipe. A pusher plate is fixedly installed on the side of each movable rod away from the limiting plate. The pusher plate is movably installed inside the discharge pipe, and the side of the pusher plate is tightly and movably attached to the inner wall of the discharge pipe.

[0032] It is worth noting that, see Figures 1 to 4The hollow tube has first connecting screw holes at both ends on its outer side, and a second connecting screw hole is provided inside the top of the side of the movable rod. A connecting bolt is slidably inserted between the first and second connecting screw holes, and a limit nut is screwed onto the top of the side of the connecting bolt. The connecting bolt is slidably inserted into the hollow tube, and the outer wall of the side of the connecting bolt has a thread that matches the inner wall of the limit nut. A fastening bolt is slidably inserted through the transmission rod and the transmission sleeve. A fastening nut is screwed onto the side of the fastening bolt, and the outer wall of the side of the fastening bolt has a thread that matches the inner wall of the fastening nut.

[0033] When adjusting the feeding interval of materials, the protective cover is lifted and removed from the top of the transmission frame. The fastening nut is then tightened to move the fastening bolt to the side. The fastening bolt is then pulled out. The transmission cam is disassembled and moved away from the outside of the transmission rod. The transmission cam is then replaced and installed so that its overall shape is suitable for the feeding interval. The limit nut is then tightened and moved away from the side of the connecting bolt. The connecting bolt is then pulled out. Subsequently, the hollow tube is pushed and pulled to adjust its horizontal position outside the movable rod, so that the follower roller can fit against the outer wall of the replaced transmission cam, allowing the transmission cam to provide corresponding intermittent pushing force to the follower roller.

[0034] In addition, all components designed in this utility model are general standard parts or components known to those skilled in the art. Their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods. Those skilled in the art can fully implement them, so there is no need to elaborate. The content protected by this utility model does not involve improvements to the internal structure and method.

[0035] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this utility model based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this utility model, they are all within the protection scope of this utility model.

Claims

1. An automatic feeding structure for a flash dryer, comprising a storage tank (1) and a transmission frame (11), characterized in that, The bottom of the storage tank (1) is vertically connected to a conveying pipe (15), the bottom of the conveying pipe (15) is fixedly connected to a feed pipe (14), and the middle side of the transmission frame (11) is fixedly installed with a discharge pipe (12), and the bottom of the feed pipe (14) and the top of the discharge pipe (12) are fixedly connected. The transmission frame (11) is provided with an intermittent transmission mechanism, the discharge pipe (12) is provided with a pushing mechanism, the pushing mechanism is connected to the intermittent transmission mechanism, the top of the transmission frame (11) is hinged with a protective cover plate (17) through a rotating shaft, and a hand-pulled frame (18) is fixedly installed on the top of the protective cover plate (17).

2. The automatic feeding structure for the flash dryer as described in claim 1, characterized in that, The pushing mechanism includes a pushing plate (32). A limiting plate (23) is fixedly installed inside the transmission frame (11) at one end near the discharge pipe (12). A movable rod (24) is slidably inserted through the middle of the limiting plate (23). A pushing plate (32) is fixedly installed on the side of each movable rod (24) away from the limiting plate (23).

3. The automatic feeding structure for the flash dryer as described in claim 2, characterized in that, A hollow tube (25) is movably sleeved on the side of the movable rod (24) away from the pusher plate (32). A limit baffle (33) is fixedly installed on the side of the hollow tube (25) near the limit plate (23). A push spring (3) is movably sleeved on the outside of the movable rod (24).

4. The automatic feeding structure for the flash dryer as described in claim 3, characterized in that, The intermittent transmission mechanism includes a transmission cam (22) and a follower roller (29). A mounting plate (26) is fixedly installed on the side of the hollow tube (25) away from the limiting plate (23). A fixing frame (27) is fixedly installed on the side of the mounting plate (26). An I-shaped rod (28) is rotatably installed inside the fixing frame (27) through a bearing. The follower roller (29) is fixedly sleeved on the outer side of the middle end of the I-shaped rod (28).

5. The automatic feeding structure for the flash dryer as described in claim 4, characterized in that, A transmission rod (2) is vertically mounted inside the transmission frame (11) on the side away from the storage tank (1) via a bearing. A transmission sleeve (21) is movably sleeved on the outside of the transmission rod (2). A transmission cam (22) is fixedly sleeved on the outside of the transmission sleeve (21), and the outer side of the follower roller (29) is movably attached to the outer side wall of the transmission cam (22). A rotating motor (31) is fixedly mounted at the bottom of the transmission frame (11), and the top of the transmission shaft of the rotating motor (31) is fixedly connected to the bottom of the transmission rod (2) via a coupling.

6. The automatic feeding structure for the flash dryer as described in claim 5, characterized in that, The hollow tube (25) has a first connecting screw hole (5) at both ends on the outside. The movable rod (24) has a second connecting screw hole (51) inside the top side. A connecting bolt (52) is slidably inserted between the first connecting screw hole (5) and the second connecting screw hole (51). A limit nut (53) is threadedly screwed onto the top side of the connecting bolt (52). A fastening bolt (4) is slidably inserted through the transmission rod (2) and the transmission sleeve (21). A fastening nut (41) is threadedly screwed onto the side end of the fastening bolt (4).

7. The automatic feeding structure for the flash dryer as described in claim 1, characterized in that, A control valve (16) is fixedly installed at the bottom of the conveying pipe (15). The bottom discharge port of the control valve (16) is fixedly connected to the top of the feed pipe (14). A connecting frame (13) is fixedly sleeved on the outside of the discharge pipe (12), and the feed pipe (14) passes through the inside of the top of the connecting frame (13) and is fixedly connected to the top of the discharge pipe (12).

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