A clog-resistant potassium nitrate granule conveying device

Abstract

This invention discloses an anti-clogging potassium nitrate granule conveying device, belonging to the technical field of potassium nitrate granule conveying devices. The invention includes a conveying cylinder, with a conveying motor fixedly installed at its lower end. A conveying auger is rotatably installed on the inner side of the conveying cylinder, and a hopper is fixedly connected to the upper part of the lower section of the conveying cylinder. A discharge port is provided at the lower part of the upper section of the conveying cylinder. A mounting frame is fixedly installed at the upper end of the hopper, and a movable sleeve is elastically and vertically mounted on the mounting frame. A clearing rod is telescopically installed on the inner side of the movable sleeve, and a sealing plug is elastically and rotatably mounted on the upper end of the clearing rod. A second spring is fixedly connected between the sealing plug and the inner wall of the movable sleeve. This anti-clogging potassium nitrate granule conveying device can clean and clear the lower end of the hopper and the outer side of the conveying auger, and can trigger auxiliary vibration to dislodge material in the event of a blockage, effectively reducing the possibility of blockage and machine shutdown during the conveying process.

Description

Technical Field

[0001] This invention relates to the technical field of potassium nitrate granule conveying devices, specifically an anti-clogging potassium nitrate granule conveying device. Background Technology

[0002] In industrial settings such as potassium nitrate production, processing, storage, and transportation, the continuous and stable conveying of granular potassium nitrate is a key factor in ensuring production efficiency. Currently, screw conveyors are widely used as the core conveying equipment for conveying granular materials. These conveyors have become the mainstream choice for conveying potassium nitrate granules due to their advantages such as compact structure, small footprint, flexible conveying direction, and strong material conveying continuity.

[0003] Existing technology (Chinese Patent No. CN216470375U, Publication Date: 2022-05-10) discloses an industrial potassium nitrate conveying device, including a base, a worktable rotatably connected to the upper end of the base, a mounting hole on one side of the upper surface of the base, a motor installed in the mounting hole, a gear installed at the end of the motor's rotating shaft, a rotating toothed groove circumferentially provided on the lower surface of the worktable, the gear meshing with the rotating toothed groove, a screw conveyor body rotatably connected to one side of the upper end of the worktable, an asynchronous motor installed on the other side of the upper end of the worktable, a lead screw installed at the end of the asynchronous motor's rotating shaft, a threaded sleeve fitted on one side of the lead screw, a support rod installed at the upper end of the threaded sleeve, the upper end of the support rod rotatably connected to one side of the lower end of the screw conveyor body. The asynchronous motor drives the threaded sleeve through the lead screw to control the right side of the screw conveyor body to move downwards, the motor drives the worktable to rotate through the meshing of the gear and the rotating toothed groove, the worktable drives the screw conveyor body to rotate, facilitating quick and easy adjustment of the screw conveyor body's orientation; The prior art (Chinese patent publication number: CN117208488A, publication date: 2023-12-12) discloses a screw conveyor with anti-clogging function, including a cylinder, a first support block, a second support block, and a discharge pipe. The first support block and the second support block are installed on the outer wall of the cylinder, and the discharge pipe is installed through the outer wall of the cylinder, with the discharge pipe located on one side of the second support block. By installing a detection module, a protruding head, and a push rod, the screw conveyor is automatically controlled to prevent clogging during discharge. When the detection module detects that the discharge flow rate of the screw conveyor is abnormal through a flow sensor, the processor feeds back to the detection module to activate the anti-clogging component. The second motor rotates, driving the protruding head to rotate. The rotation of the protruding head drives the first support plate to move. The movement of the first support plate drives the first spring to move. The movement of the first spring causes the first support plate to drive the push rod to move. The movement of the push rod agitates the material in the discharge pipe to prevent clogging, thus realizing the function of automatically controlling the screw conveyor to prevent clogging during discharge. However, potassium nitrate granules have unique physicochemical properties. They are highly hygroscopic and easily absorb moisture from the air, leading to increased stickiness on the granule surface and subsequent clumping. Existing potassium nitrate granule conveying devices are not convenient for clearing the hopper and the inside of the conveyor, which can easily cause blockages and shutdowns during the feeding process, thereby reducing production efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide an anti-clogging potassium nitrate granule conveying device to solve the problem mentioned in the background art that current potassium nitrate granule conveying devices on the market are inconvenient to unclog the hopper and the inside of the conveyor, which easily leads to blockage and shutdown during the feeding process.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a clog-resistant potassium nitrate granule conveying device, comprising a conveying cylinder, a conveying motor fixedly installed at the lower end of the conveying cylinder, a conveying auger rotatably installed on the inner side of the conveying cylinder, a hopper fixedly connected to the upper part of the lower portion of the conveying cylinder, a discharge port provided at the lower part of the upper portion of the conveying cylinder, an outer fixing frame fixedly installed on the outer side of the hopper, a drive motor fixedly installed on the outer fixing frame, and a piston gas conveying assembly for reciprocating gas conveying also installed on the outer fixing frame, and an mounting frame fixedly installed at the upper end of the hopper. A movable sleeve is elastically lifted and installed on the mounting frame, and a draining rod is telescopically installed on the inner side of the movable sleeve. A sealing plug is elastically rotatably installed at the upper end of the draining rod, and a second spring is fixedly connected between the sealing plug and the inner wall of the movable sleeve. A rubber sleeve is sealed and fixedly connected between the lower end of the movable sleeve and the lower part of the draining rod. The movable sleeve is connected to the inner space of the rubber sleeve through air passages opened on the draining rod and the sealing plug. Bags are fixedly installed on both sides of the blades of the conveying auger. A vibration component is provided on the outer side of the hopper, and the vibration component is driven when the movable sleeve moves upward.

[0006] Preferably, the piston gas delivery assembly includes a turntable fixedly installed at the output end of the drive motor, a piston cylinder fixedly installed on the outer fixing frame, a piston block slidably installed on the inner side of the piston cylinder, and a connecting rod hinged between the piston block and the turntable.

[0007] Preferably, a first gas supply pipe is fixedly connected to the top of the piston cylinder, and the other end of the first gas supply pipe is fixedly connected to the upper end of the movable sleeve. When the piston block moves upward, the piston cylinder supplies gas to the inside of the movable sleeve through the first gas supply pipe for compression.

[0008] Preferably, the rubber sleeve is initially twisted, and the rubber sleeve expands when the air passage supplies air to the inside of the rubber sleeve. During the expansion of the rubber sleeve, the unblocking rod slides downward in the movable sleeve, and the movable sleeve rotates synchronously during the downward movement.

[0009] Preferably, when the air pressure inside the movable sleeve is restored, the unblocking rod moves upward and resets, and the unblocking rod drives the rubber sleeve to twist during the reset process.

[0010] Preferably, the top of the movable sleeve is connected to a second gas supply pipe, and the lower end of the second gas supply pipe is fixedly connected to a fixed seat. The fixed seat is rotatably installed on the outside of the shaft of the conveying auger. At the same time, the outside of the fixed seat is rotatably sealed to a movable seat. The movable seat is fixedly installed on the outside of the shaft of the conveying auger. The movable seat and the bladder are connected by a pipe. The gas in the second gas supply pipe enters the bladder after passing through the cavity between the movable seat and the fixed seat.

[0011] Preferably, a first spring is fixedly connected between the mounting bracket and the upper end of the movable sleeve, and the elastic force of the first spring is greater than that of the second spring.

[0012] Preferably, the vibration assembly includes a sliding plate that is slidably sleeved on the outside of the hopper, and a pull rope is fixedly connected between the sliding plate and the top of the movable sleeve, and the sliding plate is pulled upward synchronously by the pull rope during the upward movement of the movable sleeve.

[0013] Preferably, the vibration assembly further includes a striking element that is elastically rotatably mounted on the outside of the hopper, and the striking element is L-shaped. A first magnetic block is fixedly mounted on the lower surface of the slide plate, and a second magnetic block is fixedly mounted on the upper end of the striking element. The first magnetic block and the second magnetic block are positioned vertically corresponding to each other, and the magnetic poles of their opposite surfaces are opposite.

[0014] Compared with the prior art, the beneficial effects of the present invention are: the anti-clogging potassium nitrate granule conveying device can clean and unclog the hopper and the outside of the conveying auger, and realize the unclogging inside the hopper, the peeling of the attached material on the outside of the auger and the auxiliary knocking and dropping of material in the blocked state through the linkage of the same piston air conveying assembly, effectively reducing the possibility of blockage and machine stoppage during the conveying process. 1. It is equipped with a piston cylinder, a movable sleeve, a dredging rod and a rubber sleeve. As the piston block inside the piston cylinder moves back and forth, the gas inside the piston cylinder can be transported and compressed. When the gas pressure inside the rubber sleeve increases, it will expand, thereby driving the dredging rod to move down and rotate at the same time, thereby clearing the bottom of the hopper. 2. It is equipped with a piston cylinder and a bladder. As the gas inside the piston cylinder is transported and compressed, some gas can enter the bladder, causing the bladder to expand and recover. This causes the surface of the bladder to change, thereby realizing the automatic peeling off of the material attached to the outside of the conveying auger and the clamping blocks, avoiding excessive material attachment that could lead to blockage and machine shutdown. 3. Equipped with a movable sleeve, a sliding plate, and a striking component, when the bottom of the hopper is blocked, preventing the unblocking rod from moving down smoothly, the movable sleeve will elastically move upward under air pressure, which in turn will drive the sliding plate upward through the pull rope, causing the first magnetic block under the sliding plate to move away from the second magnetic block. This causes the striking component to lose its magnetic force and rotate elastically, thereby striking the side wall of the hopper to achieve vibration-assisted material discharge. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the main structure of the present invention; Figure 2 This is a schematic diagram of the rear view structure of the present invention; Figure 3 This is a schematic diagram of the conveying auger installation structure of the present invention; Figure 4 This is a schematic diagram of the hopper installation structure of the present invention; Figure 5 This is a schematic cross-sectional view of the hopper structure of the present invention; Figure 6 This is a schematic cross-sectional view of the piston cylinder structure of the present invention; Figure 7 This is a schematic diagram of the connection structure between the movable sleeve and the unblocking rod of the present invention; Figure 8 This is a schematic cross-sectional view of the movable sleeve structure of the present invention; Figure 9 This is a schematic diagram of the capsule mounting structure of the present invention; Figure 10 For the present invention Figure 4 Enlarged structural diagram at point A in the middle.

[0016] In the diagram: 1. Conveying cylinder; 2. Conveying motor; 3. Conveying auger; 4. Hopper; 5. Discharge port; 6. External fixed frame; 7. Drive motor; 8. Turntable; 9. Piston cylinder; 10. Piston block; 11. Connecting rod; 12. First air supply pipe; 13. Mounting bracket; 14. Movable sleeve; 15. First spring; 16. Unblocking rod; 17. Sealing plug; 18. Second spring; 19. Air passage; 20. Rubber sleeve; 21. Second air supply pipe; 22. Movable seat; 23. Fixed seat; 24. Bag body; 25. Pull rope; 26. Slide plate; 27. First magnetic block; 28. Striking component; 29. ​​Second magnetic block. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Example 1: Existing potassium nitrate granule conveying devices are inconvenient for effectively clearing the material during the conveying process. To solve this technical problem, this example discloses the following technical content. Please refer to [link / reference]. Figures 1-9 As shown; A clog-resistant potassium nitrate granule conveying device includes a conveying cylinder 1, a conveying motor 2 fixedly installed at the lower end of the conveying cylinder 1, a conveying auger 3 rotatably installed on the inner side of the conveying cylinder 1, a hopper 4 fixedly connected to the upper part of the lower part of the conveying cylinder 1, a discharge port 5 provided at the lower part of the upper part of the conveying cylinder 1, an outer fixing frame 6 fixedly installed on the outer side of the hopper 4, a drive motor 7 fixedly installed on the outer fixing frame 6, and a piston gas conveying assembly for reciprocating gas conveying also installed on the outer fixing frame 6. A mounting frame 13 is fixedly installed at the upper end of the hopper 4. The upper elastic lifting is equipped with a movable sleeve 14, and the inner side of the movable sleeve 14 is telescopically equipped with a dredging rod 16. The upper end of the dredging rod 16 is elastically rotatably equipped with a sealing plug 17, and a second spring 18 is fixedly connected between the sealing plug 17 and the inner wall of the movable sleeve 14. The lower end of the movable sleeve 14 and the lower part of the dredging rod 16 are sealed and fixedly connected with a rubber sleeve 20. The movable sleeve 14 is connected to the space inside the rubber sleeve 20 through the air passage 19 opened on the dredging rod 16 and the sealing plug 17. The blades of the conveying auger 3 are fixedly equipped with bladders 24 on both sides.

[0019] The piston gas delivery assembly includes a turntable 8 fixedly mounted on the output end of the drive motor 7, a piston cylinder 9 fixedly mounted on the outer fixing frame 6, and a piston block 10 slidably and sealingly mounted on the inner side of the piston cylinder 9. A connecting rod 11 is hinged between the piston block 10 and the turntable 8. A first gas delivery pipe 12 is fixedly connected to the top of the piston cylinder 9, and the other end of the first gas delivery pipe 12 is fixedly connected to the upper end of the movable sleeve 14. When the piston block 10 moves upward, the piston cylinder 9 delivers gas and compresses it to the inner side of the movable sleeve 14 through the first gas delivery pipe 12. The rubber sleeve 20 is initially twisted, and when the air passage 19 delivers gas to the inner side of the rubber sleeve 20, the rubber sleeve 20 expands. During the expansion process, the rubber sleeve 20 pushes the unblocking rod 16 to slide downward in the movable sleeve 14. Furthermore, the movable sleeve 14 rotates synchronously during its downward movement. When the air pressure inside the movable sleeve 14 is restored, the unblocking rod 16 moves upward and resets. During the reset process, the unblocking rod 16 drives the rubber sleeve 20 to twist. The top of the movable sleeve 14 is connected to the second air supply pipe 21, and the lower end of the second air supply pipe 21 is fixedly connected to the fixed seat 23. The fixed seat 23 is rotatably installed on the outside of the shaft of the conveying auger 3. At the same time, the outside of the fixed seat 23 is sealed and rotatably connected to the movable seat 22. The movable seat 22 is fixedly installed on the outside of the shaft of the conveying auger 3. The movable seat 22 and the bladder 24 are connected by a pipe. The gas in the second air supply pipe 21 enters the bladder 24 after passing through the cavity between the movable seat 22 and the fixed seat 23.

[0020] Material is fed into hopper 4, and then conveyor motor 2 is started, which drives conveyor auger 3 to rotate, thus conveying potassium nitrate granules. At the same time, drive motor 7 is started, which drives turntable 8 to rotate. Turntable 8 drives piston block 10 to reciprocate inside piston cylinder 9 via connecting rod 11. This allows gas inside piston cylinder 9 to be transported and compressed through first gas pipe 12. After entering the inside of movable sleeve 14, the gas enters the space between unblocking rod 16 and rubber sleeve 20 through air passage 19, causing rubber sleeve 20 to expand. At this time, the twisted and wrinkled parts of rubber sleeve 20 tend to straighten. At the same time, it drives unblocking rod 16 to move down inside movable sleeve 14 and rotate synchronously, thus unblocking the material inside hopper 4. When piston block 10 moves down, unblocking rod 16 will elastically rotate below sealing plug 17, thereby driving the two ends of rubber sleeve 20 to rotate relative to each other, causing rubber sleeve 20 to twist, and then unblocking rod 16 to return to its original position.

[0021] As the gas inside the piston cylinder 9 is compressed and transported, some of the gas can enter the space between the movable seat 22 and the fixed seat 23 through the second gas supply pipe 21, and then enter the bladder 24 through the pipeline, causing the bladder 24 to expand. When the bladder 24 expands and recovers, it can change the surface curvature, thereby realizing the automatic peeling of the material attached to the outside of the conveying auger 3 and the clamping block, avoiding excessive material attachment that could lead to blockage and shutdown. The bladder 24 can be made of fluororubber, which has high strength and corrosion resistance. The movable seat 22 and the fixed seat 23 can adopt the standard rotary sealing joint commonly used in industry, which can effectively reduce wear and gas leakage at the connection. At the same time, the movable seat 22 and the fixed seat 23 can adopt a replaceable structure with the external pipeline, so that the movable seat 22 and the fixed seat 23 can be replaced separately after wear, without replacing the entire bladder 24 and the conveying auger 3.

[0022] Example 2: The technical content disclosed in this example is a further improvement based on Example 1. Existing potassium nitrate granule conveying devices have a single unblocking method and cannot provide auxiliary unblocking after blockage. To further solve this technical problem, this example discloses the following technical content: Figure 4 and Figures 7-10 As shown; a vibration assembly is provided on the outside of the hopper 4, and the vibration assembly is driven when the movable sleeve 14 moves upward.

[0023] A first spring 15 is fixedly connected between the upper ends of the mounting bracket 13 and the movable sleeve 14, and the elastic force of the first spring 15 is greater than that of the second spring 18. The vibration assembly includes a sliding plate 26 that is slidably sleeved on the outside of the hopper 4, and a pull rope 25 is fixedly connected between the sliding plate 26 and the top of the movable sleeve 14. During the upward movement of the movable sleeve 14, the sliding plate 26 is pulled upward synchronously by the pull rope 25. The vibration assembly also includes a striking element 28 that is elastically rotatably installed on the outside of the hopper 4, and the striking element 28 is L-shaped. A first magnetic block 27 is fixedly installed on the lower surface of the sliding plate 26, and a second magnetic block 29 is fixedly installed on the upper end of the striking element 28. The positions of the first magnetic block 27 and the second magnetic block 29 are corresponding vertically, and the magnetic poles of their opposite surfaces are opposite.

[0024] When the bottom of the hopper 4 becomes blocked, preventing the unblocking rod 16 from moving down smoothly, the movable sleeve 14 will elastically move upward under air pressure, thereby driving the slide plate 26 upward through the pull rope 25. This causes the first magnetic block 27 under the slide plate 26 to move away from the second magnetic block 29, causing the striking part 28 to lose its magnetic force and rotate elastically, thereby striking the side wall of the hopper 4. This achieves vibration-assisted material discharge, avoiding the noise caused by traditional continuous striking or vibration.

[0025] In the description of this invention, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

Claims

1. A clog-proof potassium nitrate granule conveying device, comprising a conveying cylinder (1), a conveying motor (2) fixedly installed at the lower end of the conveying cylinder (1), a conveying auger (3) rotatably installed on the inner side of the conveying cylinder (1), and a hopper (4) fixedly connected to the upper part of the lower part of the conveying cylinder (1), and a discharge port (5) provided at the lower part of the upper part of the conveying cylinder (1). Its features are, An outer fixing frame (6) is fixedly installed on the outside of the hopper (4), and a drive motor (7) is fixedly installed on the outer fixing frame (6). A piston gas delivery assembly for reciprocating gas delivery is also installed on the outer fixing frame (6). An installation frame (13) is fixedly installed on the upper end of the hopper (4), and a movable sleeve (14) is elastically lifted and lowered on the installation frame (13). A draining rod (16) is telescopically installed on the inner side of the movable sleeve (14). A sealing plug (17) is elastically rotatably installed on the upper end of the draining rod (16). A second spring (18) is fixedly connected between the inner wall of the movable sleeve (14) and the lower end of the movable sleeve (14) and the lower part of the unblocking rod (16) are sealed and fixedly connected with a rubber sleeve (20). The movable sleeve (14) is connected to the inner space of the rubber sleeve (20) through the air passage (19) opened on the unblocking rod (16) and the sealing plug (17). The blades of the conveying auger (3) are fixedly installed with bladders (24). The outer side of the hopper (4) is provided with a vibration component, and the vibration component is driven when the movable sleeve (14) moves upward.

2. The anti-clogging potassium nitrate granule conveying device according to claim 1, characterized in that: The piston gas delivery assembly includes a turntable (8) fixedly installed at the output end of the drive motor (7), a piston cylinder (9) fixedly installed on the outer fixed frame (6), and a piston block (10) is slidably installed on the inner side of the piston cylinder (9), and a connecting rod (11) is hinged between the piston block (10) and the turntable (8).

3. The anti-clogging potassium nitrate granule conveying device according to claim 2, characterized in that: The piston cylinder (9) is fixedly connected to the top of the first gas supply pipe (12), and the other end of the first gas supply pipe (12) is fixedly connected to the upper end of the movable sleeve (14). When the piston block (10) moves upward, the piston cylinder (9) supplies gas to the inside of the movable sleeve (14) through the first gas supply pipe (12) for compression.

4. The anti-clogging potassium nitrate granule conveying device according to claim 1, characterized in that: The rubber sleeve (20) is initially twisted, and when the air passage (19) supplies air to the inside of the rubber sleeve (20), the rubber sleeve (20) expands. During the expansion of the rubber sleeve (20), the unblocking rod (16) is pushed to slide downward in the movable sleeve (14), and the movable sleeve (14) rotates synchronously during the downward movement.

5. The anti-clogging potassium nitrate granule conveying device according to claim 4, characterized in that: When the air pressure inside the movable sleeve (14) is restored, the unblocking rod (16) moves upward and resets, and the unblocking rod (16) drives the rubber sleeve (20) to twist during the reset process.

6. The anti-clogging potassium nitrate granule conveying device according to claim 1, characterized in that: The top of the movable sleeve (14) is connected to a second gas supply pipe (21), and the lower end of the second gas supply pipe (21) is fixedly connected to a fixed seat (23). The fixed seat (23) is rotatably installed on the outside of the shaft of the conveying auger (3). At the same time, the outside of the fixed seat (23) is sealed and rotatably connected to a movable seat (22). The movable seat (22) is fixedly installed on the outside of the shaft of the conveying auger (3). The movable seat (22) and the bladder (24) are connected by a pipe. The gas in the second gas supply pipe (21) enters the bladder (24) after passing through the cavity between the movable seat (22) and the fixed seat (23).

7. The anti-clogging potassium nitrate granule conveying device according to claim 1, characterized in that: A first spring (15) is fixedly connected between the upper end of the mounting bracket (13) and the movable sleeve (14), and the elastic force of the first spring (15) is greater than that of the second spring (18).

8. The anti-clogging potassium nitrate granule conveying device according to claim 7, characterized in that: The vibration assembly includes a sliding plate (26) that is slidably sleeved on the outside of the hopper (4), and a pull rope (25) is fixedly connected between the top of the sliding plate (26) and the movable sleeve (14), and the sliding plate (26) is pulled up synchronously by the pull rope (25) during the upward movement of the movable sleeve (14).

9. The anti-clogging potassium nitrate granule conveying device according to claim 1, characterized in that: The vibration assembly also includes a striking element (28) that is elastically rotatably mounted on the outside of the hopper (4), and the striking element (28) is L-shaped. A first magnetic block (27) is fixedly mounted on the lower surface of the slide plate (26), and a second magnetic block (29) is fixedly mounted on the upper end of the striking element (28). The first magnetic block (27) and the second magnetic block (29) are positioned vertically and vertically, and their magnetic poles are opposite.

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