Automatic packing machine for flake caustic soda

Abstract

An automatic packing machine for flake caustic soda, which comprises a screw feeder. The discharge port of the screw feeder is connected to the feed inlet of a screw feeder. The discharge port of the screw feeder is connected to a transition hopper. A bag clamping and bagging machine is arranged on the outer periphery of the lower part of the transition hopper. The bag clamping and bagging machine is suspended on a weighing sensor. A bag receiving conveyor is arranged below the bag clamping and bagging machine. A bag clamping conveyor is arranged in front of the bag receiving conveyor. A bag clamping shaping machine is arranged above the bag clamping conveyor. A heat sealing conveyor is arranged in front of the bag clamping conveyor. An inner bag heat sealer is arranged above the heat sealing conveyor. A sewing conveyor is arranged in front of the heat sealing conveyor. A hemming and sewing machine is arranged above the sewing conveyor. The devices located at the lower end of the discharge port of the screw feeder are all inside an isolation chamber. An air outlet is arranged at the top of the isolation chamber. The air outlet is connected to the inlet of a dehumidifier. The outlet of the dehumidifier is connected to the air inlet of the isolation chamber. The present invention can realize the automatic packing of flake caustic soda, and the equipment runs stably and reliably.

Description

Technical Field

[0001] The invention discloses a full-automatic packing machine for flake caustic soda, belonging to the field of packing machinery. Background Art

[0002] Caustic soda (NaOH) is a strong base with strong corrosiveness, soluble in water (exothermic when dissolved in water) and forms an alkaline solution, and is easy to absorb water vapor and carbon dioxide in the air, causing corrosion of production equipment. Flake caustic soda has more dust, and after the dust drifts onto the equipment, it absorbs moisture, adheres and deteriorates to form lumpy materials that are difficult to clean. At the same time, after the dust absorbs water to form an alkaline solution, it corrodes the equipment, causing damage to the heating device. In addition, the production process of flake caustic soda requires continuous production without stopping, so it is required that the packing machine for flake caustic soda should operate stably and reliably, and the fault shutdown time should not be longer than 5 minutes. The pipeline for flake caustic soda also needs to be cleaned with steam irregularly to prevent blockage due to caking. In view of the technical difficulties such as corrosion, wall hanging and caking, cleaning, and dust in the production process of flake caustic soda, the packing process of flake caustic soda has always adopted the manual packing method, that is, manual bagging, gross weight automatic weighing, manual tying or heat sealing of the inner bag, and folding and sealing of the outer bag, resulting in problems such as high labor intensity of workers, poor working environment, and low production efficiency. Summary of the Invention

[0003] In order to solve various problems existing in the manual packaging process of existing flake caustic soda, such as corrosion, wall sticking and caking, cleaning, dust, low efficiency, etc., the present invention proposes a full-automatic packaging machine for flake caustic soda, which includes a screw feeder 1. The front discharge port of the screw feeder 1 is connected to the feed inlet of a screw feeder. A large-diameter screw 4 is provided above the screw feeder, and a small-diameter screw 3 is provided below the screw feeder. A cut-off gate 2 is provided below the small-diameter screw 3. The lower end of the discharge port of the screw feeder is connected to a transition hopper 5. An interbagging machine 6 is provided on the outer periphery of the lower part of the transition hopper 5. There is no rigid connection between the interbagging machine 6 and the transition hopper 5. The interbagging machine 6 is suspended on a weighing sensor. An internal dust removal interface is also provided above the interbagging machine 6. A liftable bag receiving conveyor 18 is provided below the interbagging machine 6. A nip conveyor 16 is provided in front of the bag receiving conveyor 18. A nip shaping machine 8 is provided above the nip conveyor 16. A bag moving gripper 7 that can reciprocate back and forth is provided above the side of the interbagging machine 6. The bag moving gripper 7 can transfer the full bag B after bagging from the bag receiving conveyor 18 to the nip conveyor 16. A heat sealing conveyor 15 is provided in front of the nip conveyor 16. An intermittent internal bag heat sealer 11 is provided above the heat sealing conveyor 15. A sewing conveyor 14 is provided in front of the heat sealing conveyor 15. A hemming and sewing machine 12 is provided above the sewing conveyor 14. All devices located at the lower end of the discharge port of the screw feeder are inside a closed isolation chamber 13. An air outlet 22 is provided at the front end of the top of the isolation chamber 13. The air outlet 22 is connected to the inlet of a dehumidifier 21. The outlet of the dehumidifier 21 is connected to the air inlet 23 at the rear end of the top of the isolation chamber 13. The outlet of the dehumidifier 21 is also connected to a ventilation port 24 provided above the front discharge port of the screw feeder 1. A hole for outputting the full bag B is provided at the front end of the isolation chamber 13.

[0004] A defective product discharge port is provided at the rear end of the screw feeder 1. A discharge pipe 20 is provided at the lower end of the defective product discharge port. A manual bag clamping device 19 is provided at the lower end of the discharge pipe 20. The screw feeder 1 can achieve forward and reverse conveying.

[0005] Vibrating plates 17 that can be opened and closed are provided on the left and right sides of the nip conveyor 16. When the vibrating plates 17 on the left and right sides are closed, they can clamp the full bag B.

[0006] An exhaust nip machine 9 is provided above the heat sealing conveyor 15. The exhaust nip machine 9 is located between the nip shaping machine 8 and the internal bag heat sealer 11. Bag mouth clamping rods 10 that incline forward and downward are provided on the left and right sides below the exhaust nip machine 9. The bag mouth clamping rods 10 can arrange the bag mouth of the full bag B into a straight line.

[0007] The working principle of the present invention is as follows: An empty bag A with a lining film is automatically supplied by a bag feeder to a bag clamping and filling machine 6. Flake caustic soda is conveyed by a screw feeder 1 to the feed inlet of a screw feeder. The large-diameter screw 4 and the small-diameter screw 3 operate simultaneously for feeding. The flake caustic soda is loaded into the empty bag A via a transition hopper 5 and weighed. Meanwhile, the dust generated during material bagging is sucked away by an internal dust removal interface above the bag clamping and filling machine 6. After reaching the coarse flow set value, the large-diameter screw 4 stops operating. When reaching the fine flow set value, the small-diameter screw 3 also stops operating. At the same time, the cutoff gate 2 is lifted to prevent the material from continuing to fall. The bag receiving conveyor 18 quickly rises to a high position and impacts the bottom of the full bag B, playing a role in vibrating the material bag, thereby preventing the material surface in the full bag B from being too high. Then the bag receiving conveyor 18 descends to the middle position. The bag transferring gripper 7 grips both sides of the bag mouth of the full bag B. The bag clamping and filling machine 6 releases the bag mouth. The bag transferring gripper 7 and the bag receiving conveyor 18 together transfer the full bag B to the bag clamping conveyor 16 and the bag clamping and shaping machine 8. Then the bag receiving conveyor 18 descends to a low position. The vibrating plate 17 closes to clamp the full bag B for vibration, making the flake caustic soda in the full bag B packed densely, thereby discharging the air in the material. The full bag B continues to be conveyed forward. The inclined bag mouth clamping rod 10 arranges the bag mouth into a straight shape to discharge the air at the bag mouth. After the full bag B reaches the inner bag heat sealer 11, the conveying stops. The heat sealing mechanism of the inner bag heat sealer 11 clamps the bag mouth and then heats it to firmly heat-seal the inner bag at the bag mouth. Then the full bag B after inner bag heat sealing continues to be conveyed forward to the hemming and sewing machine 12 to complete the hemming and sewing of the bag mouth. During the operation of the automatic packaging machine, the dehumidifier 21 extracts humid air from the air outlet 22 of the isolation room 13, and after dehumidification, the dry air is then introduced into the air inlet 23 and the ventilation opening 24 to keep the air inside the isolation room 13 and the material passage dry. When the production equipment at the upper end of the screw feeder 1 is cleaned with steam, the screw feeder 1 conveys in the reverse direction to convey the cleaning sewage to the defective product discharge opening for discharge. For the front-section materials that continue to be produced after cleaning, due to high humidity and viscosity, the screw feeder 1 also needs to convey in the reverse direction, and manual bagging is carried out using a manual bag gripper 19 until the humidity of the material reaches the standard, and then the screw feeder 1 is changed to convey in the forward direction, and automatic packaging of flake caustic soda is carried out using the automatic packaging machine.

[0008] The beneficial effects of the present invention are as follows:

[0009] A. The screw feeder 1 has a forward and reverse conveying function, avoiding the sewage during the cleaning of the upper-end production equipment from flowing into the automatic packaging machine and causing the material passage to be humid, and can manually bag the unqualified materials with high water content through the manual bag gripper 19 to avoid the humid materials from sticking to the wall;

[0010] B. There is no rigid connection between the main material falling channel, the transition hopper 5, and the bag clamping and filling machine 6. Even if there is material sticking to the inner wall of the transition hopper 5, it will not affect the weighing accuracy;

[0011] C. By utilizing the vibration effect of the bag conveyor 18 when it rises to a high position, the flaky materials in the full bag are filled densely, reducing the height of the material surface;

[0012] D. By vibrating the full bag B using the vibrating plate 17, the flaky materials in the bag are filled densely, reducing the air contained between the materials;

[0013] E. By adopting an intermittent inner bag heat sealer 11, the heat sealing effect of the inner bag is reliable. At the same time, the structure of the heating mechanism is simpler than that of a continuous heat sealer, improving the reliability of the equipment;

[0014] F. By using a dehumidifier 21 to turn the air in the isolation chamber 13 into dry air, the humidity of the air in the conveying screw, feeding screw, and transition hopper is also reduced, preventing the flaky caustic soda from absorbing moisture and deteriorating and adhering to the channel, and also preventing the dust from deteriorating, caking, and absorbing moisture and corroding the equipment after falling on the equipment, improving the reliability of the equipment;

[0015] G. Through the coordinated cooperation of multiple devices, the hanging wall and caking of flaky caustic soda in the material channel are avoided, and the absorption of moisture and corrosion of the equipment and the deterioration and caking of the falling dust are also avoided. Thus, the reliability of the equipment operation is greatly improved. And through methods such as vibrating the material to exhaust air, exhausting air at the bag mouth, and clamping and heat sealing the inner bag, the packaging effect of the fully automatic packaging machine meets the strict requirements for caustic soda packaging, solving the long-existing packaging problems in the caustic soda industry and realizing the reliable and stable fully automatic packaging of flaky caustic soda. Description of the Drawings

[0016] Figure 1 is the front view of the present invention. Detailed Embodiments

[0017] For the detailed embodiments of the present invention, please refer to Figure 1, an automatic packaging machine for flake caustic soda, which includes a screw feeder 1. The front discharge port of the screw feeder 1 is connected to the feed port of a screw feeder. A large-diameter screw 4 is provided above the screw feeder, and a small-diameter screw 3 is provided below the screw feeder. A cut-off gate 2 is provided below the small-diameter screw 3. The lower end of the discharge port of the screw feeder is connected to a transition hopper 5. A bag clamping and bagging machine 6 is provided on the outer periphery of the lower part of the transition hopper 5. There is no rigid connection between the bag clamping and bagging machine 6 and the transition hopper 5. The bag clamping and bagging machine 6 is suspended on a weighing sensor. An internal dust removal interface is also provided above the bag clamping and bagging machine 6. A liftable bag receiving conveyor 18 is provided below the bag clamping and bagging machine 6. A bag clamping conveyor 16 is provided in front of the bag receiving conveyor 18. A bag clamping shaping machine 8 is provided above the bag clamping conveyor 16. A bag moving gripper 7 that can reciprocate back and forth is provided above the side of the bag clamping and bagging machine 6. The bag moving gripper 7 can transfer the full bag B after bagging from the bag receiving conveyor 18 to the bag clamping conveyor 16. A heat sealing conveyor 15 is provided in front of the bag clamping conveyor 16. An intermittent internal bag heat sealer 11 is provided above the heat sealing conveyor 15. A sewing conveyor 14 is provided in front of the heat sealing conveyor 15. A hemming and sewing machine 12 is provided above the sewing conveyor 14. All the devices located at the lower end of the discharge port of the screw feeder are inside a closed isolation room 13. An air outlet 22 is provided at the front end of the top of the isolation room 13. The air outlet 22 is connected to the inlet of a dehumidifier 21. The outlet of the dehumidifier 21 is connected to the air inlet 23 at the rear end of the top of the isolation room 13. The outlet of the dehumidifier 21 is also connected to a ventilation port 24 provided above the front discharge port of the screw feeder 1. A hole for outputting the full bag B is provided at the front end of the isolation room 13.

[0018] A defective product discharge port is provided at the rear end of the above-mentioned screw feeder 1. A discharge pipe 20 is provided at the lower end of the defective product discharge port. A manual bag clamping device 19 is provided at the lower end of the discharge pipe 20. The screw feeder 1 can realize forward and reverse conveying.

[0019] Vibrating plates 17 that can be opened and closed are provided on the left and right sides of the above-mentioned bag clamping conveyor 16. When the vibrating plates 17 on the left and right sides are closed, they can clamp the full bag B.

[0020] An exhaust bag clamping machine 9 is provided above the above-mentioned heat sealing conveyor 15. The exhaust bag clamping machine 9 is located between the bag clamping shaping machine 8 and the internal bag heat sealer 11. Bag mouth clamping rods 10 that slope forward and downward are provided on the left and right sides below the exhaust bag clamping machine 9. The bag mouth clamping rods 10 can arrange the bag mouth of the full bag B into a straight line.

Claims

1. An automatic packing machine for flake caustic soda, which comprises a screw feeder (1). The front discharge port of the screw feeder (1) is connected to the feed inlet of a screw feeder. It is characterized in that: A large-diameter screw (4) is provided above the screw feeder, a small-diameter screw (3) is provided below the screw feeder, a cut-off gate (2) is provided below the small-diameter screw (3). The lower end of the discharge port of the screw feeder is connected to a transition hopper (5). An interbag packing machine (6) is provided on the outer periphery of the lower part of the transition hopper (5). There is no rigid connection between the interbag packing machine (6) and the transition hopper (5). The interbag packing machine (6) is suspended on a weighing sensor. An internal dust removal interface is also provided above the interbag packing machine (6). A liftable bag receiving conveyor (18) is provided below the interbag packing machine (6). A nip conveyor (16) is provided in front of the bag receiving conveyor (18). A nip shaping machine (8) is provided above the nip conveyor (16). A reciprocating bag transfer gripper (7) that can move back and forth is provided above the side of the interbag packing machine (6). The bag transfer gripper (7) can transfer the full bag (B) after bagging from the bag receiving conveyor (18) to the nip conveyor (16). A heat-sealing conveyor (15) is provided in front of the nip conveyor (16). An intermittent internal bag heat-sealing machine (11) is provided above the heat-sealing conveyor (15). A sewing conveyor (14) is provided in front of the heat-sealing conveyor (15). A hemming sewing machine (12) is provided above the sewing conveyor (14). All the devices located at the lower end of the discharge port of the screw feeder are inside a closed isolation room (13). An air outlet (22) is provided at the front end of the top of the isolation room (13). The air outlet (22) is connected to the inlet of a dehumidifier (21). The outlet of the dehumidifier (21) is connected to an air inlet (23) at the rear end of the top of the isolation room (13). The outlet of the dehumidifier (21) is also connected to a ventilation port (24) provided above the front discharge port of the screw feeder (1). A hole for outputting the full bag (B) is provided at the front end of the isolation room (13). A defective product discharge port is provided at the rear end of the screw feeder (1). A discharge pipe (20) is provided at the lower end of the defective product discharge port. A manual bag gripper (19) is provided at the lower end of the discharge pipe (20). The screw feeder (1) can achieve forward and reverse conveying.

2. An automatic packing machine for flake caustic soda according to claim 1, It is characterized in that: Vibrating plates (17) that can be opened and closed are provided on the left and right sides of the nip conveyor (16). When the vibrating plates (17) on the left and right sides are closed, they can clamp the full bag (B).

3. An automatic packing machine for flake caustic soda according to claim 1, It is characterized in that: An exhaust nip machine (9) is provided above the heat-sealing conveyor (15). The exhaust nip machine (9) is located between the nip shaping machine (8) and the internal bag heat-sealing machine (11). Bag mouth clamping rods (10) that are inclined forward and downward are provided on the left and right sides below the exhaust nip machine (9). The bag mouth clamping rods (10) can arrange the bag mouth of the full bag (B) into a straight line.

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