A potassium nitrate production line finished product packaging equipment

Abstract

This invention relates to the field of packaging equipment, specifically a finished product packaging equipment for a potassium nitrate production line. The equipment includes a conveyor belt, a U-shaped frame fixedly installed on the upper part of the conveyor belt, a feeding mechanism for discharging potassium nitrate from the upper part of the U-shaped frame, and a bag-carrying mechanism for supplying packaging bags in the middle of the U-shaped frame. This invention uses two staggered discharge pipes to fill the packaging bags, preventing the packaging bags at the two filling stations from contacting each other on the conveyor belt, thus enabling continuous filling of potassium nitrate and improving packaging efficiency. Furthermore, this invention uses multiple movable frames positioned between the outer and inner track frames to transport the packaging bags, allowing operators to simultaneously place new packaging bags while the discharge pipes are discharging potassium nitrate into the packaging bags, thus enabling simultaneous filling and bagging, further improving the filling efficiency of potassium nitrate.

Description

Technical Field

[0001] This invention relates to the field of packaging equipment, specifically a finished product packaging equipment for a potassium nitrate production line. Background Technology

[0002] Potassium nitrate is an inorganic compound, commonly known as saltpeter or nitrate salt. It is a potassium-containing nitrate. Potassium nitrate is a colorless, transparent orthorhombic or rhombic crystal or white powder. It has low hygroscopicity in the air and does not easily clump. The active ingredients of potassium nitrate, nitrogen and potassium, can be quickly absorbed by crops, and there are no chemical residues, making potassium nitrate commonly used as a fertilizer.

[0003] Currently, potassium nitrate is typically packaged using a dual-station powder packaging machine. After filling, the bag is moved to the left by a conveyor belt, allowing a sealing machine to seal it. While the dual-station powder packaging machine can fill potassium nitrate simultaneously at both stations, the two stations are arranged parallel above the conveyor belt. To prevent collisions between the potassium nitrate bags on the right and left stations, the machine must simultaneously process both bags. The process involves either dropping potassium nitrate bags from the upper station or dropping bags from the left-side filling station first. This results in operators having to wait for the conveyor belt to move the bags from the right-side filling station past the left-side station before they can fit new bags onto the dual-station powder packaging machine. This leads to discontinuous filling operations and reduces the packaging efficiency of potassium nitrate. Furthermore, operators can only fit new bags onto the filling station after the existing bags have fallen onto the conveyor belt, resulting in poor bag fitting efficiency and impacting the packaging speed of potassium nitrate. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a finished product packaging equipment for a potassium nitrate production line, including a conveyor belt, a U-shaped frame fixedly installed on the upper part of the conveyor belt, a feeding mechanism for feeding potassium nitrate on the upper part of the U-shaped frame, and a bag conveying mechanism for supplying packaging bags in the middle of the U-shaped frame.

[0005] The feeding mechanism includes a storage bin fixedly installed on the upper part of the U-shaped frame. The storage bin is arranged in a state of gradually tilting backward from right to left. The front right part and the rear left part of the lower side of the storage bin are both fixedly connected to the discharge pipes through corrugated pipes. The two discharge pipes are jointly provided with a drive component to drive them to move up and down. The discharge pipes are provided with an opening and closing component to control the opening and closing of their pipe openings.

[0006] The bag transport mechanism includes an inner track frame fixedly installed in the middle of the U-shaped frame, an outer track frame fixedly installed in the middle of the U-shaped frame, both the outer track frame and the inner track frame having a waist-shaped slot structure, the outer track frame being located outside the inner track frame, a movable frame slidingly arranged on both the outer track frame and the inner track frame along its track, a bag clamping assembly being arranged on the movable frame, a movable component for driving the bag clamping assembly to move being arranged on the outer track frame, force application components for driving the bag clamping assembly to clamp the packaging bag being symmetrically arranged on the front and rear sides of the U-shaped frame, and a reset component for resetting the bag clamping assembly being arranged on the U-shaped frame.

[0007] As a preferred embodiment of the present invention, the bag clamping assembly includes two clamping plates symmetrically and slidably disposed on a movable frame. A feeding pipe is fixedly installed in the middle of the movable frame. Semi-circular grooves are provided on the sides of the two clamping plates on the same movable frame that are close to each other. A return spring is provided between the upper parts of the two clamping plates on the same movable frame that are close to the outer track frame. A fixing support plate is fixedly installed on the upper part of the clamping plate that is close to the inner track frame. A locking part for locking the position of the clamping plates is provided on the movable frame.

[0008] As a preferred embodiment of the present invention, the locking part includes a toothed plate slidably disposed on both sides of the movable frame near the outer track frame and the inner track frame respectively. The two toothed plates on the same movable frame are arranged symmetrically at the center. A helical spring is provided between the toothed plate and the movable frame. A triangular plate is fixedly installed on the side of the clamping plate near the outer track frame on one side of the same movable frame and the side of the clamping plate near the inner track frame on the other side at equal intervals. The shape of the triangular plate corresponds to the groove of the toothed plate at the corresponding position.

[0009] As a preferred embodiment of the present invention, the opening and closing assembly includes a top column fixedly installed at the axial position inside the feeding pipe, a spring telescopic rod fixedly installed inside the discharge pipe, a sealing member fixedly installed at the lower end of the telescopic section of the spring telescopic rod, both the upper and lower ends of the sealing member having a conical structure, the lower inner side of the discharge pipe having a conical ring structure with the same slope as the conical structure at the lower end of the sealing member, the upper part of the feeding pipe having a flared structure with a diameter gradually increasing from bottom to top, and the lower end of the discharge pipe having a conical surface structure with the same slope as the flared structure of the feeding pipe.

[0010] As a preferred embodiment of the present invention, the driving assembly includes an X-shaped plate that is fixedly installed on the outside of two discharge pipes. The X-shaped plate is slidably connected to the U-shaped frame through guide posts. An electric push rod is fixedly installed on the upper part of the U-shaped frame, and the telescopic section of the electric push rod is fixedly connected to the X-shaped plate.

[0011] As a preferred embodiment of the present invention, the reset assembly includes a rotating gear fixedly installed on the lower side of the horizontal section of the U-shaped frame, a first rack meshing with the rear of the rotating gear fixedly installed on the upper part of the X-shaped plate, push rods slidably arranged on the front right side and rear left side of the X-shaped plate, a connecting rod fixedly installed between the upper parts of the two push rods, a second rack meshing with the front of the rotating gear fixedly installed in the middle of the connecting rod, a sliding frame slidably arranged on the upper part of the moving frame, a compression spring arranged between the sliding frame and the moving frame, and inclined blocks fixedly installed on the lower side of the sliding frame near the outer and inner track frames.

[0012] As a preferred embodiment of the present invention, the force-applying component includes support plates fixedly installed on the front and rear sides of the U-shaped frame, a hydraulic push rod fixedly installed on the lower side of the middle part of the support plate, a lifting plate fixedly connected to the lower end of the telescopic section of the hydraulic push rod, and a pushing square rod symmetrically and slidably arranged on the front part of the lifting plate, the upper part of the pushing square rod being hinged to the support plate through a hinge plate.

[0013] As a preferred embodiment of the present invention, the moving component includes a moving belt rotatably disposed inside an outer track frame. The inner side of the moving belt is fixedly connected to the moving frame. An actuator motor is fixedly installed on the upper front side of the outer track frame. An active roller is fixedly installed on the outer side of the output shaft of the actuator motor. The cylindrical surface of the active roller abuts against the outer side of the moving belt.

[0014] The beneficial effects of this invention are as follows: I. This invention uses a storage silo arranged at an angle on the upper part of a U-shaped frame to store potassium nitrate. This allows the two discharge pipes on the storage silo to be staggered, preventing the packaging bags at the two filling stations from contacting each other on the conveyor belt. As a result, after the packaging bag at the filling station is filled with potassium nitrate and falls onto the conveyor belt, the bag transport mechanism can quickly transport the new packaging bag to the filling station for filling. This enables continuous filling of potassium nitrate and improves the packaging efficiency of potassium nitrate.

[0015] Second, this invention uses multiple movable frames set between the outer and inner track frames to transport the packaging bags, so that when the discharge pipe discharges potassium nitrate into the packaging bag, the operator can simultaneously put on a new packaging bag, thereby enabling filling and bagging to be carried out simultaneously, further improving the filling efficiency of potassium nitrate.

[0016] Third, the present invention uses a moving component to control the moving frame to rotate unidirectionally along the outer track frame and the inner track frame. The packaging bag is clamped simultaneously by the force-applying components on both sides. Thus, the packaging bag can be transported to the positions of the two discharge pipes by a single moving component, which simplifies the structure of the equipment, reduces the floor space occupied by the equipment, and makes the present invention adaptable to more confined environments. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 This is a partial structural diagram of the U-shaped frame, feeding mechanism, and reset assembly after removing the sliding frame and inclined block in this invention.

[0020] Figure 3 yes Figure 2 A magnified view of a portion of point A in the middle.

[0021] Figure 4 This is a cross-sectional view of the inner track frame, outer track frame, movable frame, bag clamping assembly, movable assembly, sliding frame and inclined block in this invention.

[0022] Figure 5 This is a partial cross-sectional view of the movable frame, bag clamping assembly, opening and closing assembly, corrugated pipe, discharge pipe, sliding frame and inclined block in this invention.

[0023] Figure 6 This is a cross-sectional view of the movable frame, sliding frame, inclined block and toothed plate in this invention.

[0024] Figure 7 This is a partial structural diagram of the U-shaped frame and the force-applying component in this invention.

[0025] In the diagram: 1. Conveyor belt; 2. U-shaped frame; 3. Feeding mechanism; 4. Bag conveying mechanism; 31. Storage bin; 32. Corrugated pipe; 33. Discharge pipe; 34. Drive assembly; 35. Opening and closing assembly; 41. Inner track frame; 42. Outer track frame; 43. Moving frame; 44. Bag clamping assembly; 45. Moving assembly; 46. Force application assembly; 47. Reset assembly; 341. X-shaped plate; 342. Electric push rod; 351. Top column; 352. Spring telescopic rod; 353. Sealing component; 441. Clamping plate ; 442. Feeding pipe; 443. Locking part; 444. Fixed support plate; 451. Moving belt; 452. Actuating motor; 453. Drive roller; 461. Support plate; 462. Hydraulic push rod; 463. Lifting plate; 464. Pushing square rod; 465. Hinge plate; 471. Rotating gear; 472. No. 1 rack; 473. Push rod; 474. Connecting rod; 475. No. 2 rack; 476. Sliding frame; 477. Inclined block; 4431. Gear plate; 4432. Triangle plate. Detailed Implementation

[0026] The embodiments of the present invention are described in detail below. The embodiments described below are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention. Where specific techniques or conditions are not specified in the embodiments, they shall be performed in accordance with the techniques or conditions described in the literature in the art or in accordance with the product manual.

[0027] See Figure 1 , Figure 2 and Figure 4 A finished product packaging equipment for a potassium nitrate production line includes a conveyor belt 1, a U-shaped frame 2 fixedly installed on the upper part of the conveyor belt 1, a feeding mechanism 3 for feeding potassium nitrate onto the upper part of the U-shaped frame 2, and a bag conveying mechanism 4 for supplying packaging bags in the middle of the U-shaped frame 2.

[0028] When potassium nitrate needs to be packaged, the operator first places the packaging bag on the bag conveying mechanism 4. The bag conveying mechanism 4 then intermittently transports the packaging bag to the unloading mechanism 3. The unloading mechanism 3 then fills the packaging bag with potassium nitrate. While filling the packaging bag, the operator places a new packaging bag on the bag conveying mechanism 4, thus making the filling and bagging processes synchronized and improving the packaging efficiency of potassium nitrate.

[0029] See Figure 1 , Figure 4 and Figure 5 The bag transport mechanism 4 includes an inner track frame 41 fixedly installed in the middle of the U-shaped frame 2, an outer track frame 42 fixedly installed in the middle of the U-shaped frame 2, both the outer track frame 42 and the inner track frame 41 have a waist-shaped groove structure, the outer track frame 42 is located outside the inner track frame 41, and a movable frame 43 is slidably arranged on the outer track frame 42 and the inner track frame 41 along their track, and a bag clamping assembly 44 is arranged on the movable frame 43.

[0030] See Figure 4 and Figure 5 The bag clamping assembly 44 includes two clamping plates 441 symmetrically and slidably disposed on the movable frame 43. A feeding pipe 442 is fixedly installed in the middle of the movable frame 43. Semi-circular grooves are provided on the sides of the two clamping plates 441 on the same movable frame 43 that are close to each other. A return spring is provided between the upper parts of the two clamping plates 441 on the same movable frame 43 that are close to the outer track frame 42. A fixed support plate 444 is fixedly installed on the upper part of the clamping plate 441 that is close to the inner track frame 41.

[0031] See Figure 1 , Figure 4 , Figure 5 and Figure 7The bag transport mechanism 4 also includes force application components 46 arranged on the front and rear sides of the U-shaped frame 2. The two force application components 46 are arranged symmetrically at the center. Each force application component 46 includes a support plate 461 fixedly installed on the front and rear sides of the U-shaped frame 2. A hydraulic push rod 462 is fixedly installed on the lower side of the middle part of the support plate 461. A lifting plate 463 is fixedly connected to the lower end of the telescopic section of the hydraulic push rod 462. A push square rod 464 is symmetrically and slidably arranged on the front part of the lifting plate 463. The upper part of the push square rod 464 is hinged to the support plate 461 through a hinge plate 465.

[0032] When potassium nitrate needs to be packaged, the operator holds the packaging bag and moves it from bottom to top to the inside of a movable frame 43 directly below the corresponding support plate 461, so that the upper opening of the packaging bag is completely inside the movable frame 43, and the feeding pipe 442 is inserted into the inside of the packaging bag. Then, the telescopic section of the hydraulic push rod 462 extends downward, so that the hydraulic push rod 462 drives the lifting plate 463 to move downward. The lifting plate 463 drives the push rod 464 to move downward simultaneously to the outside of the two fixed support plates 444 at the corresponding positions.

[0033] As the lifting plate 463 moves the pushing rod 464 downward, the hinge plate 465 pulls the pushing rod 464 to move, causing the two pushing rods 464 on the same lifting plate 463 to move closer to each other. This causes the pushing rod 464 to push the fixed support plate 444 to move the two corresponding clamping plates 441 closer to each other, thereby clamping and fixing the packaging bag. At the same time, the clamping plate 441 uses its semi-circular groove to press the packaging bag against the outer surface of the feeding pipe 442, thus preventing gaps between the packaging bag and the feeding pipe 442, which could cause dust to overflow during potassium nitrate filling.

[0034] See Figure 5 and Figure 6 The bag clamping assembly 44 also includes a locking part 443 disposed on the movable frame 43. The locking part 443 includes a toothed plate 4431 slidably disposed on both sides of the movable frame 43 near the outer track frame 42 and the inner track frame 41 respectively. The two toothed plates 4431 on the same movable frame 43 are centrally symmetrically arranged. A helical spring is disposed between the toothed plate 4431 and the movable frame 43. On the same movable frame 43, the clamping plate 441 on one side near the outer track frame 42 and the clamping plate 441 on the other side near the inner track frame 41 are equally spaced and fixedly installed with a triangular plate 4432. The shape of the triangular plate 4432 corresponds to the slot of the toothed plate 4431 at the corresponding position.

[0035] When the clamping plate 441 moves and clamps the packaging bag, the clamping plate 441 drives the triangular plate 4432 on it to move synchronously. When the triangular plate 4432 contacts the corresponding toothed plate 4431, the triangular plate 4432 pushes the toothed plate 4431 away from the corresponding feed tube 442. When the clamping plate 441 clamps the packaging bag, the elastic force of the coil spring pushes the toothed plate 4431 to reset, so that the triangular plate 4432 is inserted into the triangular groove of the toothed plate 4431. In this way, the toothed plate 4431 blocks the clamping plate 441 through the triangular plate 4432, preventing the two clamping plates 441 on the same moving frame 43 from moving away from each other.

[0036] Then, the telescopic section of the retracting hydraulic push rod 462 drives the lifting plate 463 and the pushing rod 464 back to their initial positions, so that the pushing rod 464 moves to the upper side of the fixed support plate 444, thereby avoiding the pushing rod 464 from obstructing the movement of the moving frame 43.

[0037] See Figure 1 , Figure 2 , Figure 4 and Figure 5 The bag conveying mechanism 4 also includes a moving component 45 mounted on the outer track frame 42. The moving component 45 includes a moving belt 451 rotatably mounted inside the outer track frame 42. The inner side of the moving belt 451 is fixedly connected to the moving frame 43. An actuator motor 452 is fixedly mounted on the upper front side of the outer track frame 42. An active roller 453 is fixedly mounted on the outer side of the output shaft of the actuator motor 452. The cylindrical surface of the active roller 453 abuts against the outer side of the moving belt 451. The unloading mechanism 3 includes a storage bin 31 fixedly mounted on the upper part of the U-shaped frame 2. The storage bin 31 is arranged in a state of gradually tilting backward from right to left. The lower right front part and left rear part of the storage bin 31 are both fixedly connected to the discharge pipe 33 through the corrugated pipe 32.

[0038] When the packaging bag is clamped on the moving frame 43, the start-up motor 452 drives the drive roller 453 to rotate. The drive roller 453 drives the moving belt 451 to rotate, causing the moving belt 451 to move the front moving frame 43 backward from the right side of the inner track frame 41. At the same time, the moving belt 451 drives the rear moving frame 43 forward from the left side of the inner track frame 41. Thus, the moving belt 451, through the moving frame 43, moves the packaging bag that is moving backward to directly below the discharge pipe 33 at the right front. At the same time, the moving belt 451, through the moving frame 43, moves the packaging bag that is moving forward to directly below the discharge pipe 33 at the left rear. This allows the packaging bag to move to directly below the discharge pipe 33 at the fastest speed, and ensures that the packaging bag does not obstruct the filled potassium nitrate bag on the right front discharge pipe 33.

[0039] Continue reading Figure 1 , Figure 2 , Figure 4 and Figure 5 The feeding mechanism 3 also includes a drive assembly 34 that is jointly installed on the two discharge pipes 33. The drive assembly 34 includes an X-shaped plate 341 that is jointly fixedly installed on the outside of the two discharge pipes 33. The X-shaped plate 341 is slidably connected to the U-shaped frame 2 through a guide column. An electric push rod 342 is fixedly installed on the upper part of the U-shaped frame 2. The telescopic section of the electric push rod 342 is fixedly connected to the X-shaped plate 341. The upper part of the feeding pipe 442 has a flared structure with a diameter that gradually increases from bottom to top. The lower end of the discharge pipe 33 has a conical structure with the same slope as the flared structure of the feeding pipe 442.

[0040] When the packaging bag moves directly below the discharge pipe 33, the telescopic section of the extended electric push rod 342 drives the X-shaped plate 341 to move downward. The X-shaped plate 341 drives the two discharge pipes 33 to move downward synchronously. At the same time, the corrugated pipe 32 extends, and the discharge pipe 33 moves downward into the flared structure of the upper part of the feeding pipe 442 inserted below it, so that the discharge pipe 33 and the feeding pipe 442 are tightly connected together. Meanwhile, the operator clamps the new packaging bag inside the movable frame 43 under the support plate 461, so that filling and bagging can be carried out simultaneously.

[0041] See Figure 5 The feeding mechanism 3 also includes an opening and closing assembly 35 disposed inside the discharge pipe 33. The opening and closing assembly 35 includes a top column 351 fixedly installed at the axial position inside the feeding pipe 442. A spring telescopic rod 352 is fixedly installed inside the discharge pipe 33. A sealing member 353 is fixedly installed at the lower end of the telescopic section of the spring telescopic rod 352. Both the upper and lower ends of the sealing member 353 are tapered structures. The lower inner side of the discharge pipe 33 is a tapered ring structure with the same slope as the tapered structure at the lower end of the sealing member 353.

[0042] When the discharge pipe 33 is connected to the feeding pipe 442, the reaction force of the top column 351 on the sealing member 353 pushes the sealing member 353 upward, causing the sealing member 353 to move upward until it disengages from the conical ring structure at the bottom of the discharge pipe 33. At the same time, the spring telescopic rod 352 is compressed, so that the potassium nitrate inside the storage bin 31 is filled into the packaging bag in sequence through the corrugated pipe 32, the discharge pipe 33, and the feeding pipe 442 under the action of gravity. After filling is completed, the telescopic section of the electric push rod 342 is retracted, which drives the X-shaped plate 341 to return to the initial position, so that the discharge pipe 33 is disengaged from the feeding pipe 442. As a result, the elastic force of the spring telescopic rod 352 pushes the sealing member 353 downward again to press against the conical ring structure at the bottom of the discharge pipe 33, thereby sealing the lower end of the discharge pipe 33.

[0043] See Figure 2 , Figure 3 , Figure 5 and Figure 6The bag transport mechanism 4 also includes a reset assembly 47 mounted on the U-shaped frame 2. The reset assembly 47 includes a rotating gear 471 fixedly mounted on the lower side of the horizontal section of the U-shaped frame 2. A first rack 472 meshing with the rear of the rotating gear 471 is fixedly mounted on the upper part of the X-shaped plate 341. Push rods 473 are slidably mounted on the right front and left rear of the X-shaped plate 341. A connecting rod 474 is fixedly mounted between the upper parts of the two push rods 473. A second rack 475 meshing with the front of the rotating gear 471 is fixedly mounted on the middle of the connecting rod 474. A sliding frame 476 is slidably mounted on the upper part of the moving frame 43. A compression spring is provided between the sliding frame 476 and the moving frame 43. Inclined blocks 477 are fixedly mounted on the lower side of the sliding frame 476 near the outer track frame 42 and the inner track frame 41.

[0044] When the inside of the packaging bag is filled with potassium nitrate, the telescopic section of the retractable electric push rod 342 drives the X-shaped plate 341 to move upward, causing the X-shaped plate 341 to drive the first rack 472 to move upward synchronously, causing the first rack 472 to drive the rotating gear 471 to rotate. At the same time, the rotating gear 471 drives the second rack 475 to move downward, thereby causing the second rack 475 to drive the push rod 473 to move downward through the connecting rod 474. The push rod 473 moves downward to abut against the sliding frame 476 at its lower part, thereby causing the push rod 473 to push the sliding frame 476 to move downward synchronously. The sliding frame 476 pushes the two toothed plates 4431 at the lower part of the discharge pipe 33 and located on the same moving frame 43 to move away from each other through the inclined block 477 on it.

[0045] When the two clamping plates 4431 on the same moving frame 43 move away from each other, the clamping plates 4431 disengage from the corresponding triangular plates 4432, so that the clamping plates 4431 no longer block the clamping plates 441 through the triangular plates 4432. This causes the restoring spring to push the two clamping plates 441 at the corresponding positions away from each other, so that the clamping plates 441 no longer clamp the packaging bag. The packaging bag filled with potassium nitrate falls onto the conveyor belt 1 under the action of gravity. Then the conveyor belt 1 moves the packaging bag filled with potassium nitrate to the left. Then the extension section of the electric push rod 342 extends and drives the X-shaped plate 341 to return to the initial position. The X-shaped plate 341 drives the push rod 473 to return to the initial position as well, thus avoiding the push rod 473 from blocking the movement of the moving frame 43.

[0046] When filling potassium nitrate into the packaging bag, the present invention further includes the following steps: First, the operator holds the packaging bag and moves it from bottom to top to the inside of a movable frame 43 directly below the corresponding support plate 461. Then, the telescopic section of the hydraulic push rod 462 extends downward, so that the clamping plate 441 clamps and fixes the packaging bag on the movable frame 43.

[0047] The second step involves starting the actuator 452, which drives the packaging bag to move directly below the discharge pipe 33 via the moving frame 43. The telescopic section of the extended electric push rod 342 drives the two discharge pipes 33 to move downwards synchronously until they are tightly connected with the feeding pipe 442. At the same time, the operator clamps the new packaging bag inside the moving frame 43 at the bottom of the support plate 461, so that filling and bagging can be carried out simultaneously.

[0048] Third, the reaction force of the top column 351 on the sealing component 353 pushes the sealing component 353 upward, causing the sealing component 353 to open the lower end of the discharge pipe 33, thereby allowing the potassium nitrate inside the storage bin 31 to be filled into the packaging bag. Then, the telescopic section of the retractable electric push rod 342 drives the X-shaped plate 341 back to the initial position, causing the spring telescopic rod 352 to drive the sealing component 353 to close the lower end of the discharge pipe 33.

[0049] In the fourth step, the telescopic section of the retractable electric push rod 342 causes the X-shaped plate 341 to move upward, which in turn causes the push rod 473 to push the sliding frame 476 downward. The sliding frame 476 causes the two toothed plates 4431 to move away from each other, which causes the restoring push spring to push the two clamping plates 441 at the corresponding positions to move away from each other. As a result, the packaging bag filled with potassium nitrate falls onto the conveyor belt 1 under the action of gravity. Then, the conveyor belt 1 moves the packaging bag filled with potassium nitrate to the left.

[0050] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention, which are still covered within the protection scope of the present invention.

Claims

1. A finished product packaging equipment for a potassium nitrate production line, comprising a conveyor belt (1), wherein a U-shaped frame (2) is fixedly installed on the upper part of the conveyor belt (1), characterized in that, The upper part of the U-shaped frame (2) is provided with a feeding mechanism (3) for feeding potassium nitrate, and the middle part of the U-shaped frame (2) is provided with a bag conveying mechanism (4) for supplying packaging bags; The feeding mechanism (3) includes a storage bin (31) fixedly installed on the upper part of the U-shaped frame (2). The storage bin (31) is arranged in a state of gradually tilting backward from right to left. The front right part and the rear left part of the storage bin (31) are both fixedly connected to the discharge pipe (33) through the corrugated pipe (32). The two discharge pipes (33) are jointly provided with a drive assembly (34) to drive them to move up and down. The discharge pipe (33) is provided with an opening and closing assembly (35) to control the opening and closing of its pipe opening. The bag transport mechanism (4) includes an inner track frame (41) fixedly installed in the middle of the U-shaped frame (2), an outer track frame (42) fixedly installed in the middle of the U-shaped frame (2), both the outer track frame (42) and the inner track frame (41) have a waist-shaped groove structure, the outer track frame (42) is located outside the inner track frame (41), a movable frame (43) is slidably arranged on the outer track frame (42) and the inner track frame (41) along its trajectory, a bag clamping assembly (44) is arranged on the movable frame (43), a movable component (45) for driving the bag clamping assembly (44) to move is arranged on the outer track frame (42), a force application component (46) for driving the bag clamping assembly (44) to clamp the packaging bag is symmetrically arranged on the front and rear sides of the U-shaped frame (2), and a reset component (47) for resetting the bag clamping assembly (44) is arranged on the U-shaped frame (2).

2. The finished product packaging equipment for a potassium nitrate production line according to claim 1, characterized in that, The bag clamping assembly (44) includes two clamping plates (441) symmetrically and slidably disposed on the movable frame (43). A feeding pipe (442) is fixedly installed in the middle of the movable frame (43). A semi-circular groove is provided on the side of the two clamping plates (441) on the same movable frame (43) that are close to each other. A return spring is provided between the upper parts of the two clamping plates (441) on the same movable frame (43) that are close to the outer track frame (42). A fixed support plate (444) is fixedly installed on the upper part of the clamping plate (441) that is close to the inner track frame (41). A locking part (443) is provided on the movable frame (43) for locking the position of the clamping plate (441).

3. The finished product packaging equipment for a potassium nitrate production line according to claim 2, characterized in that, The locking part (443) includes a toothed plate (4431) slidably disposed on both sides of the movable frame (43) near the outer track frame (42) and the inner track frame (41). The two toothed plates (4431) on the same movable frame (43) are centrally symmetrically arranged. A helical spring is provided between the toothed plate (4431) and the movable frame (43). On the same movable frame (43), the side of the clamping plate (441) on one side near the outer track frame (42) and the side of the clamping plate (441) on the other side near the inner track frame (41) are equally spaced and fixedly installed with a triangular plate (4432). The shape of the triangular plate (4432) corresponds to the groove of the toothed plate (4431) at the corresponding position.

4. The finished product packaging equipment for a potassium nitrate production line according to claim 2, characterized in that, The opening and closing assembly (35) includes a top column (351) fixedly installed on the inner axis of the feeding pipe (442), a spring telescopic rod (352) fixedly installed inside the discharge pipe (33), a sealing member (353) fixedly installed at the lower end of the telescopic section of the spring telescopic rod (352), the upper and lower ends of the sealing member (353) are both conical structures, the lower inner side of the discharge pipe (33) is a conical ring structure with the same slope as the conical structure at the lower end of the sealing member (353), the upper part of the feeding pipe (442) is a flared structure with the diameter gradually increasing from bottom to top, and the lower end of the discharge pipe (33) is a conical surface structure with the same slope as the flared structure of the feeding pipe (442). When the discharge pipe (33) moves downward to the flared structure of the upper part of the feeding pipe (442) below it, the discharge pipe (33) and the feeding pipe (442) are tightly connected together.

5. The finished product packaging equipment for a potassium nitrate production line according to claim 1, characterized in that, The drive assembly (34) includes an X-shaped plate (341) that is fixedly installed on the outside of the two discharge pipes (33). The X-shaped plate (341) is slidably connected to the U-shaped frame (2) through guide posts. An electric push rod (342) is fixedly installed on the upper part of the U-shaped frame (2). The telescopic section of the electric push rod (342) is fixedly connected to the X-shaped plate (341).

6. The finished product packaging equipment for a potassium nitrate production line according to claim 5, characterized in that, The reset assembly (47) includes a rotating gear (471) fixedly installed on the lower side of the horizontal section of the U-shaped frame (2), a rack (472) meshing with the rear of the rotating gear (471) fixedly installed on the upper part of the X-shaped plate (341), push rods (473) are slidably arranged on the front right side and the rear left side of the X-shaped plate (341), a connecting rod (474) is fixedly installed between the upper parts of the two push rods (473), a rack (475) meshing with the front of the rotating gear (471) is fixedly installed in the middle of the connecting rod (474), a sliding frame (476) is slidably arranged on the upper part of the moving frame (43), a compression spring is arranged between the sliding frame (476) and the moving frame (43), and inclined blocks (477) are fixedly installed on the lower side of the sliding frame (476) near the outer track frame (42) and the inner track frame (41).

7. The finished product packaging equipment for a potassium nitrate production line according to claim 1, characterized in that, The force application component (46) includes support plates (461) fixedly installed on the front and rear sides of the U-shaped frame (2). A hydraulic push rod (462) is fixedly installed on the lower middle part of the support plate (461). A lifting plate (463) is fixedly connected to the lower end of the telescopic section of the hydraulic push rod (462). A push rod (464) is symmetrically and slidably arranged on the front part of the lifting plate (463). The upper part of the push rod (464) is hinged to the support plate (461) through a hinge plate (465).

8. The finished product packaging equipment for a potassium nitrate production line according to claim 1, characterized in that, The moving component (45) includes a moving belt (451) rotatably disposed inside the outer track frame (42). The inner side of the moving belt (451) is fixedly connected to the moving frame (43). An actuator motor (452) is fixedly installed on the upper front side of the outer track frame (42). An active roller (453) is fixedly installed on the outer side of the output shaft of the actuator motor (452). The cylindrical surface of the active roller (453) abuts against the outer side of the moving belt (451).

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