Packaging device for disodium dihydrogen pyrophosphate

Abstract

The utility model discloses a disodium dihydrogen pyrophosphate packaging device which comprises a fixedly-arranged installation frame, a supporting frame vertically arranged on the installation frame in a sliding mode, a hopper fixedly connected to the top of the supporting frame, a discharging pipe fixed to the bottom of the installation frame and clamping mechanisms arranged on the two sides of the discharging pipe. A discharging pipe at the bottom end of the hopper is located at the top in the discharging pipe, a compaction ball and an air pipe which can be opened or closed are arranged at the bottom in the discharging pipe, and the compaction ball is vertically arranged in the discharging pipe in a sliding mode. And the effect of improving the stability and the quality of the product is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of automatic packaging devices, in particular to a packaging device for disodium dihydrogen pyrophosphate. Background Art

[0002] During the packaging process of disodium dihydrogen pyrophosphate powder, existing technology typically uses a hopper for unloading, a clamping structure to secure the bag, and prevents the bag from shifting or falling out during unloading. After packaging is complete, the bag is evacuated through a suction pipe to reduce the air content inside. However, despite this evacuation, due to the fine particles and loose structure of disodium dihydrogen pyrophosphate powder, a certain amount of air inevitably remains inside the bag. The moisture in this residual air can cause the powder to absorb moisture, clump, and even deteriorate, seriously affecting the stability and performance of the product. Summary of the Invention

[0003] The technical problem to be solved by the utility model is that air easily remains inside the packaged disodium dihydrogen phosphate powder, which affects the quality of the product.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a packaging device for disodium dihydrogen pyrophosphate, including a fixed mounting frame, a support frame vertically slidably arranged on the mounting frame, a hopper fixedly connected to the top of the support frame, a discharge pipe fixed at the bottom of the mounting frame and a clamping mechanism arranged on both sides of the discharge pipe, the discharge pipe at the bottom end of the hopper is located at the top of the discharge pipe, and a compacting ball and an air pipe that can be opened or closed are provided at the bottom of the discharge pipe, and the compacting ball is vertically slidably arranged in the discharge pipe.

[0005] Preferably, the compacting ball is hemispherical, and the compacting ball includes multiple compacting pieces, and the same end of the compacting pieces is rotatably connected to the sliding shaft, a rotation limiting structure is provided between the compacting piece located at the end of the compacting ball and the discharge pipe, a compacting cylinder is provided between the compacting piece located in the middle of the compacting ball and the discharge pipe, a protrusion and a groove for sliding the protrusion are respectively provided between the compacting piece close to the movable end and the compacting piece at its rear end, and a movable limiting structure is provided at both ends of the groove.

[0006] Preferably, the rotation limiting structure includes a moving block fixedly connected to the end wall of the compacting piece, a slot is provided in the discharge pipe for the moving block to slide axially along the discharge pipe, and the cross-section of the moving block is T-shaped.

[0007] Preferably, a return spring is installed in the slot, and the return spring connects the top end of the slot and the moving block.

[0008] Preferably, a sliding groove is provided on the inner side wall of the discharge pipe along the axial direction, and the sliding shaft is vertically slidably connected in the sliding groove.

[0009] Preferably, a connecting platform is coaxially fixed in the middle of the discharge pipe, the top of the compacting cylinder is hinged to the bottom of the connecting platform, the compacting ball and the compacting cylinder in the contracted state are located directly below the connecting platform, and a conical surface is provided on the top of the connecting platform.

[0010] Preferably, a rubber ring is provided at the bottom of the discharge pipe, an exhaust groove is vertically opened on the outer side wall of the rubber ring, and a screen is provided in the exhaust groove.

[0011] The utility model provides a packaging device for disodium dihydrogen pyrophosphate. A packaging bag is clamped at the bottom of a feeding pipe by a holding mechanism, and powder is weighed and discharged through a hopper. After the packaging bag is clamped and tightened, nitrogen is transported into the packaging bag through an air pipe, and then the powder is discharged into the packaging bag. After the powder is discharged, a compacting ball is controlled to open and press the compacting ball downward to compact the powder. The packaging bag is then sealed along the top of the powder, so as to reduce the gas inside the packaging bag and use nitrogen to replace the internal gas to package the disodium dihydrogen pyrophosphate powder, thereby improving the stability and quality of product packaging. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0013] Figure 1 It is a structural schematic diagram of an embodiment of the present utility model.

[0014] Figure 2 This is a schematic diagram of the internal structure of the discharge pipe in an embodiment of the present utility model.

[0015] Figure 3 It is the spacer in the embodiment of the present utility model.

[0016] In the figure: 1. Mounting frame; 2. Support frame; 3. Hopper; 4. Weighing ring; 5. Clamping mechanism; 6. Feeding pipe; 7. Exhaust trough; 8. Connecting platform; 9. Compacting cylinder; 10. Compacting ball; 11. Air pipe; 12. Compacting sheet; 13. Moving block; 14. Sliding trough. DETAILED DESCRIPTION

[0017] like Figure 1-3 As shown, an embodiment of the utility model provides a packaging device for disodium dihydrogen pyrophosphate, including a fixed mounting frame 1, a support frame 2 vertically slidably arranged on the mounting frame 1, a hopper 3 fixedly connected to the top of the support frame 2, a discharge pipe 6 fixed at the bottom of the mounting frame 1 and a clamping mechanism 5 arranged on both sides of the discharge pipe 6, a discharge pipe at the bottom end of the hopper 3 is located at the top of the discharge pipe 6, and a compacting ball 10 and an air pipe 11 that can be opened or closed are provided at the bottom of the discharge pipe 6, and the compacting ball 10 is vertically slidably arranged in the discharge pipe 6.

[0018] Support structures are provided on both sides of the mounting frame 1 to ensure the stability of the mounting frame 1. A feeding pipe for disodium dihydrogen pyrophosphate powder is provided above the hopper 3. The disodium dihydrogen pyrophosphate powder enters the hopper 3 and is weighed by the weighing ring 4. When the hopper 3 weighs the set weight, it indicates that the powder in the hopper 3 has reached the set packaging amount. Then the air pipe 11 is controlled to transport nitrogen into the packaging bag, and the air in the packaging bag is replaced by nitrogen purge. After that, the feeding pipe stops feeding, and the hopper 3 is filled with water. The discharge pipe at the bottom of the material discharging tube will bring the powder down, and the powder will enter the packaging bag at the bottom of the feeding tube 6 through the feeding tube 6 and be clamped by the clamping mechanism 5. The clamping structure includes a clamping cylinder and a clamping claw. The top of the clamping claw is hinged on the outer wall of the feeding tube 6. The middle part of the clamping claw is pushed by the clamping cylinder to rotate around its top to clamp the packaging bag on the feeding tube 6. When the powder is completely discharged into the packaging bag, the compacting ball 10 is controlled to open, and the compacting ball 10 structure on both sides of the inside of the feeding tube 6 is closed to form a closed hemispherical structure. Figure 3 As shown, the compacting ball 10 is then controlled to move downward to compact the powder and expel most of the gas in the bag. The bag is then sealed, and the sealing position is performed along the top of the powder in the bag, reducing the residual air in the bag.

[0019] like Figure 2 and Figure 3 The compacting ball 10 is hemispherical and includes multiple compacting pieces 12. The same end of each compacting piece 12 is rotatably connected to a sliding shaft. A rotation limiting structure is provided between the compacting piece 12 at the end of the compacting ball 10 and the discharge pipe 6. A compacting cylinder 9 is provided between the compacting piece 12 at the middle of the compacting ball 10 and the discharge pipe 6. A protrusion and a groove for sliding the protrusion are provided between the compacting piece 12 near the movable end and the compacting piece 12 at the rear end, respectively. A movable limiting structure is provided at both ends of the groove.

[0020] When it is necessary to open the compacting ball 10 to compact the powder, the compacting cylinder 9 is controlled to extend, and the movable end of the compacting cylinder 9 pushes the compacting piece 12 at the movable end to rotate. The compacting piece moves in the groove through the protrusion, and drives the next compacting piece 12 to rotate, realizing continuous rotation of the compacting piece 12, and then opening the compacting ball 10 to form a sealed hemispherical structure. As the compacting cylinder 9 extends, the compacting ball 10 is pushed to slide downward. During the downward sliding process of the compacting ball 10, the powder in the packaging bag is compacted, and the gas in the packaging bag is discharged from both sides of the bag opening.

[0021] like Figure 3As shown, this is to facilitate the resetting of the compacting ball 10. The rotation limiting structure includes a moving block 13 fixedly connected to the end wall of the compacting sheet 12. A slot is provided in the discharge pipe 6 for the moving block 13 to slide axially along the discharge pipe 6. The cross-section of the moving block 13 is T-shaped. A reset spring is installed in the slot, and the reset spring connects the top of the slot and the moving block 13. When the compacting ball 10 moves downward to compact the powder, the reset spring is stretched. After the compaction is completed, the compacting cylinder 9 contracts, and the spring pulls the compacting ball 10 to move upward, preferentially driving the compacting ball 10 to move upward as a whole, and then the compacting sheet 12 in the compacting ball 10 contracts, which can prevent the compacting sheet 12 from scraping the powder when the compacting ball 10 contracts.

[0022] like Figure 2 As shown, a sliding groove 14 is axially provided on the inner side wall of the discharge pipe 6, and the sliding shaft is vertically slidably connected in the sliding groove 14. The sliding groove 14 guides the movement of the compacting ball 10, ensuring that the compacting ball 10 compacts the powder stably.

[0023] like Figure 2 As shown, a connecting platform 8 is coaxially fixedly mounted in the center of the discharge pipe 6. The top of the compacting cylinder 9 is hingedly connected to the bottom of the connecting platform 8. The compacting ball 10 and the compacting cylinder 9 in a retracted state are located directly below the connecting platform 8. The top of the connecting platform 8 is provided with a conical surface. The connecting platform 8 shields the compacting cylinder 9 and the compacting ball 10, preventing the retracted compacting ball 10 from interfering with the discharge of the powder.

[0024] like Figure 1 As shown, the bottom of the discharge tube 6 is fitted with a rubber ring. A venting groove 7 is vertically defined on the outer wall of the rubber ring, and a screen is installed within the venting groove 7. The multiple raised protrusions on the rubber ring cooperate with the clamping claws to stably clamp the packaging bag to the discharge tube 6. During the powder compaction process, air in the packaging bag can be discharged through the venting groove 7, and the screen above the venting groove 7 can reduce powder loss.

Claims

1. A packaging device for disodium dihydrogen pyrophosphate, characterized in that: The invention comprises a fixed mounting frame (1), a support frame (2) vertically slidably arranged on the mounting frame (1), a hopper (3) fixedly connected to the top of the support frame (2), a discharge pipe (6) fixed to the bottom of the mounting frame (1), and clamping mechanisms (5) arranged on both sides of the discharge pipe (6); a discharge pipe at the bottom end of the hopper (3) is located at the top of the discharge pipe (6); a compacting ball (10) and an air pipe (11) capable of opening or closing are provided at the bottom of the discharge pipe (6); and the compacting ball (10) is vertically slidably arranged in the discharge pipe (6).

2. The packaging device for disodium dihydrogen pyrophosphate according to claim 1, wherein: The compacting ball (10) is hemispherical and includes a plurality of compacting pieces (12). The same end of the compacting pieces (12) is rotatably connected to the sliding shaft. A rotation limiting structure is provided between the compacting piece (12) at the end of the compacting ball (10) and the discharge pipe (6). A compacting cylinder (9) is provided between the compacting piece (12) at the middle of the compacting ball (10) and the discharge pipe (6). A protrusion and a groove for sliding the protrusion are respectively provided between the compacting piece (12) near the movable end and the compacting piece (12) at the rear end thereof. A movable limiting structure is provided at both ends of the groove.

3. The packaging device for disodium dihydrogen pyrophosphate according to claim 2, wherein: The rotation limiting structure includes a moving block (13) fixedly connected to the end wall of the compacting plate (12), and a slot is provided in the discharge pipe (6) for the moving block (13) to slide axially along the discharge pipe (6), and the cross-section of the moving block (13) is T-shaped.

4. A packaging device for disodium dihydrogen pyrophosphate as claimed in claim 3, characterized in that: A return spring is installed in the slot, and the return spring connects the top end of the slot and the moving block (13).

5. The packaging device for disodium dihydrogen pyrophosphate according to claim 2, wherein: A sliding groove (14) is axially provided on the inner side wall of the discharge pipe (6), and the sliding shaft is vertically slidably connected in the sliding groove (14).

6. The packaging device for disodium dihydrogen pyrophosphate according to claim 2, wherein: A connecting platform (8) is coaxially fixedly provided in the middle of the discharge pipe (6), the top end of the compacting cylinder (9) is hinged to the bottom end of the connecting platform (8), the compacting ball (10) and the compacting cylinder (9) in a contracted state are located directly below the connecting platform (8), and a conical surface is provided on the top end of the connecting platform (8).

7. The packaging device for disodium dihydrogen pyrophosphate according to claim 1, characterized in that: The bottom of the discharge pipe (6) is sleeved with a rubber ring, and an exhaust groove (7) is vertically opened on the outer wall of the rubber ring, and a screen is arranged in the exhaust groove (7).

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