Packaging machine material conveying rod sealing structure

Abstract

This application provides a sealing structure for a material conveying rod of a packaging machine, including a transverse material cylinder, a rotatable conveying rod inside the transverse material cylinder, spiral blades on the outer wall of the conveying rod, an inlet and an outlet near both ends of the transverse material cylinder, a first end retaining ring and a second end retaining ring at both ends of the transverse material cylinder, a first bearing seat and a second bearing seat respectively on the side of the first end retaining ring and the second end retaining ring away from the transverse material cylinder, the two ends of the conveying rod passing through the first end retaining ring and the second end retaining ring respectively, and the two ends of the conveying rod rotatably engaging with the first bearing seat and the second bearing seat respectively, the inner walls of the first end retaining ring and the second end retaining ring having a first sealing ring that fits against the conveying rod, thus solving the problem of sealing the end of the transverse conveying screw of the filling and packaging machine.

Description

Technical Field

[0001] This utility model relates to the field of sealing in packaging machines, and in particular to a sealing structure for the material conveying rod of a packaging machine. Background Technology

[0002] A filling and packaging machine is a machine that fills materials into packaging containers according to a predetermined quantity. The filling and packaging machines currently purchased by the company lack any sealing device between the reducer side of the horizontal feeding screw spindle and the screw housing. Because the powder is squeezed by the spiral blades during mixing, some powder seeps out from the end connection gap of the feeding screw, causing a large amount of powder to accumulate at the end bearings and the reduction motor. This leads to bearing wear, increased motor load, and a significantly higher equipment failure rate. Simultaneously, rust, machine oil, and other foreign matter from the motor side can also enter the powder within the feeding screw, posing a significant quality and safety risk to the product. Utility Model Content

[0003] This utility model provides a sealing structure for the material conveying rod of a packaging machine, which solves the problem of sealing the end of the horizontal conveying screw in a filling packaging machine.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a sealing structure for a material conveying rod of a packaging machine, including a transverse material cylinder, a rotatable conveying rod inside the transverse material cylinder, a spiral blade on the outer wall of the conveying rod, an inlet and an outlet near both ends of the transverse material cylinder, a first end retaining ring and a second end retaining ring at both ends of the transverse material cylinder, a first bearing seat and a second bearing seat on the side of the first end retaining ring and the second end retaining ring away from the transverse material cylinder, the two ends of the conveying rod passing through the first end retaining ring and the second end retaining ring respectively, the two ends of the conveying rod being rotatably sleeved with the first bearing seat and the second bearing seat respectively, and a first sealing ring that fits against the conveying rod on the inner wall of the first end retaining ring and the second end retaining ring.

[0005] In the preferred embodiment, one end of the transverse material cylinder is provided with an end frame, the end frame is provided with a drive motor, the drive motor is provided with a drive shaft, the drive shaft is connected to the conveying rod, the first bearing seat is provided on the end frame, the other end of the transverse material cylinder is provided with a rear cover, the second end retaining ring is provided between the transverse material cylinder and the rear cover, and the second bearing seat is provided on the rear cover.

[0006] In the preferred embodiment, the first end retaining ring is provided with an inner through hole, which is sleeved with the conveying rod. Both ends of the inner through hole are provided with slots, and a second sealing ring is provided in the slot. The inner wall of the second sealing ring is in contact with the conveying rod. The second sealing ring at the end of the first end retaining ring away from the transverse material cylinder is pressed by the end frame.

[0007] In the preferred embodiment, the structure of the second end retaining ring is the same as that of the first end retaining ring. Each end of the feed rod is provided with a compression spring, and a pressure ring is provided at the end of each compression spring near the first end retaining ring and the second end retaining ring. The pressure ring abuts against the second sealing ring of the first end retaining ring and the second end retaining ring near the transverse material cylinder.

[0008] In the preferred embodiment, the conveying rod is provided with fixed collars at both ends, and annular baffles are fitted at both ends of the conveying rod. Each annular baffle abuts against one side of each fixed collar, and each compression spring abuts against the other side of each annular baffle. A third sealing ring is provided on the outer edge of the annular baffle, and the third sealing ring is in contact with the inner wall of the transverse material cylinder. A fourth sealing ring is provided between the annular baffle and the fixed collar.

[0009] In the preferred embodiment, a settling groove is provided at one end of the transverse material cylinder, and an annular baffle is provided in the settling groove. The annular baffle is rotatably connected to the conveying rod, and each compression spring abuts against the other side of the annular baffle. A fourth sealing ring is provided between the bottom end of the settling groove and the annular baffle, and a third sealing ring is provided between the transverse material cylinder and the conveying rod.

[0010] In a preferred embodiment, the transverse barrel is provided with an insertion part, which is inserted into the drive shaft. The drive shaft is provided with a first U-shaped bayonet, and the insertion part is provided with a radial positioning protrusion that is engaged in the first U-shaped bayonet of the drive shaft.

[0011] In a preferred embodiment, the transverse material cylinder includes a transition section and a stirring section. The transition section is rotatably sleeved with the first bearing seat. Both ends of the transition section are provided with insertion parts. Each insertion part is inserted into the stirring section and the drive shaft, respectively. The insertion part is provided with radial positioning protrusions. The drive shaft is provided with a first U-shaped bayonet. The stirring section is provided with a second U-shaped bayonet. The positioning protrusions are respectively inserted into the first U-shaped bayonet and the second U-shaped bayonet.

[0012] In a preferred embodiment, a partition groove is provided at the connection between the first end retaining ring and the transverse material cylinder. The partition groove is located on the side of the first sealing ring away from the transverse material cylinder. An air inlet and an air outlet are also provided inside the first end retaining ring, and the air inlet and air outlet are connected to the partition groove.

[0013] The beneficial effects of this utility model are as follows: by adding sealing structures at both ends of the conveyor rod, the risk of powder seeping out from the rotation gap and foreign matter such as rust and machine oil entering the powder is reduced, the wear of bearings and motors is reduced, the failure rate of the equipment is reduced, and potential product quality risks are eliminated; through multiple sealing structures combined with positive pressure air isolation, the diffusion of powder to the bearings and motors through gaps is blocked; the added structure is easy to process and adopts an assembly design with the original transverse material cylinder, and the sealing ring is also a universal accessory, so it is easy to improve the existing equipment and promote it. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0015] Figure 1 This is a schematic diagram illustrating the application of this utility model.

[0016] Figure 2 This is a schematic diagram of the interior of the horizontal feed cylinder.

[0017] Figure 3 This is a schematic diagram of the optimized sealing structure at the end of the transverse barrel.

[0018] Figure 4 This is a schematic diagram of the second optimized structure for sealing the end of the transverse barrel.

[0019] Figure 5 This is a diagram of the retaining ring structure.

[0020] Figure 6 This is a schematic diagram of the optimized sealing structure at the end of the transverse barrel.

[0021] Figure 7 This is a diagram of the material conveyor connection structure.

[0022] In the diagram: Horizontal material cylinder 1; Inlet 101; Outlet 102; Support frame 103; Settling tank 404; Positioning protrusion 405; Insertion part 406; Second U-shaped bayonet 407; Drive motor 2; Drive shaft 201; First U-shaped bayonet 202; Buffer tank 3; Conveying rod 4; Spiral blade 401; Fixing collar 402; Shoulder 403; Settling tank 404; Positioning protrusion 405; Insertion part 406; Second U-shaped bayonet 407; First end 5. Retaining ring; 501. Inner through hole; 502. Notch; 503. Second end retaining ring; 6. First bearing seat; 7. Second bearing seat; 701. End frame plate; 8. Rear cover; 9. First sealing ring; 10. End frame; 11. Second sealing ring; 12. Compression spring; 13. Compression ring; 14. Annular baffle plate; 15. Third sealing ring; 16. Elevating column; 17. Fourth sealing ring; 18. Transition section; 19. Stirring section; 20. Divider groove; 21. Air inlet duct; 2101. Air outlet duct; 2102. Detailed Implementation

[0023] like Figure 1-7 In a packaging machine, a sealing structure for a material conveying rod includes a transverse material cylinder 1. A rotatable conveying rod 4 is provided inside the transverse material cylinder 1. The outer wall of the conveying rod 4 is provided with spiral blades 401. The transverse material cylinder 1 has an inlet 101 and an outlet 102 near its two ends, respectively. A first end retaining ring 5 and a second end retaining ring 6 are provided at both ends of the transverse material cylinder 1. A first bearing seat 7 and a second bearing seat 701 are provided on the side of the first end retaining ring 5 and the second end retaining ring 6 away from the transverse material cylinder 1, respectively. The two ends of the conveying rod 4 pass through the first end retaining ring 5 and the second end retaining ring 6, respectively. The two ends of the conveying rod 4 are rotatably sleeved with the first bearing seat 7 and the second bearing seat 701, respectively. The inner walls of the first end retaining ring 5 and the second end retaining ring 6 are provided with a first sealing ring 10 that fits against the conveying rod 4.

[0024] A support frame 103 is provided at the lower end of the horizontal material cylinder 1 to fix the horizontal material cylinder 1 to the ground or platform.

[0025] The openings at both ends of the transverse material cylinder 1 are sealed by the first end retaining ring 5 and the second end retaining ring 6, and the contact gap between the conveying rod 4 and the first end retaining ring 5 and the second end retaining ring 6 is sealed by the first sealing ring 10.

[0026] The first bearing housing 7 and the second bearing housing 701 are located on the back side of the first end retaining ring 5 and the second end retaining ring 6 to prevent materials from entering the bearing and damaging the rotating structure.

[0027] The feed inlet 101 is connected to the incoming material pipeline. After the enzyme-containing powder enters the inner cavity of the transverse material cylinder 1, it moves horizontally towards the discharge port 102 under the stirring action of the spiral blade 401. The discharge port 102 is connected to the buffer tank 3 through the corrugated hose. The powder enters the buffer tank 3 for storage and is discharged quantitatively from the discharge valve at the lower end of the buffer tank 3. The packaging bag is placed at the lower outlet of the buffer tank 3 to receive the material.

[0028] In a preferred embodiment, one end of the transverse material cylinder 1 is provided with an end frame 11, the end frame 11 is provided with a drive motor 2, the drive motor 2 is provided with a drive shaft 201, the drive shaft 201 is connected to the conveying rod 4, the first bearing seat 7 is provided on the end frame 11, the other end of the transverse material cylinder 1 is provided with a rear cover 9, the second end retaining ring 6 is provided between the transverse material cylinder 1 and the rear cover 9, and the second bearing seat 701 is provided on the rear cover 9.

[0029] In the preferred embodiment, the first end retaining ring 5 is provided with an inner through hole 501, which is sleeved with the conveying rod 4. Both ends of the inner through hole 501 are provided with slots 502, and a second sealing ring 12 is provided in the slots 502. The inner wall of the second sealing ring 12 is in contact with the conveying rod 4. The second sealing ring 12 at the end of the first end retaining ring 5 away from the transverse material cylinder 1 is pressed by the end frame 11.

[0030] The end frame 11 is provided with two end frame plates 8, and an annular support frame is connected between the two end frame plates 8. The drive shaft 201 and the feed rod 4 can be connected by a coupling. The first bearing seat 7 is installed on one of the end frame plates 8 of the end frame 11 by bolts. One of the end frame plates 8 of the end frame 11 presses the second sealing ring 12 on the side of the first end retaining ring 5 away from the transverse material cylinder 1.

[0031] In the preferred embodiment, the structure of the second end retaining ring 6 is the same as that of the first end retaining ring 5. Each end of the conveying rod 4 is provided with a compression spring 13. Each compression spring 13 is provided with a compression ring 14 at the end near the first end retaining ring 5 and the second end retaining ring 6. The compression ring 14 abuts against the second sealing ring 12 on the side of the first end retaining ring 5 and the second end retaining ring 6 near the transverse material cylinder 1.

[0032] Multiple circumferentially arranged notches 503 are provided on the outer edges of the first end retaining ring 5 and the second end retaining ring 6. A raised column 17 is provided at each notch 503. The end frame 11 and the transverse material cylinder 1, and the rear cover 9 and the transverse material cylinder 1 are raised by the raised column 17 and locked by bolts.

[0033] A baffle is installed near the port inside the transverse material cylinder 1 as the first layer of protection, which can prevent most of the powder from entering the cavity between the annular baffle plate 15 and the first end retaining ring 5 or the second end retaining ring 6. There are two structures: one is to weld a fixed collar 402 on the transverse material cylinder 1 as the abutment reference of the annular baffle plate 15; the other is to cut a groove 404 in the inner wall of the transverse material cylinder 1 as the abutment reference of the annular baffle plate 15.

[0034] In the preferred embodiment, the conveying rod 4 is provided with fixed collars 402 at both ends, and annular baffles 15 are fitted at both ends of the conveying rod 4. One side of each annular baffle 15 abuts against each fixed collar 402, and each compression spring 13 abuts against the other side of the annular baffle 15. A third sealing ring 16 is provided on the outer edge of the annular baffle 15. The third sealing ring 16 fits against the inner wall of the transverse material cylinder 1. A fourth sealing ring 18 is provided between the annular baffle 15 and the fixed collars 402.

[0035] In the preferred embodiment, a settling groove 404 is provided at one end of the transverse material cylinder 1, and an annular baffle plate 15 is provided inside the settling groove 404. The annular baffle plate 15 is rotatably connected to the conveying rod 4, and each compression spring 13 abuts against the other side of the annular baffle plate 15. A fourth sealing ring 18 is provided between the bottom end of the settling groove 404 and the annular baffle plate 15, and a third sealing ring 16 is provided between the transverse material cylinder 1 and the conveying rod 4.

[0036] A raised ring is provided on the annular baffle plate 15 to constrain the compression spring 13 and prevent the compression spring 13 from slipping.

[0037] Besides using a coupling, the connection structure between the transverse barrel 1 and the drive motor 2 can be of two types. One is to use the transverse barrel 1 as a whole shaft and transmit torque through a bayonet-type structure. The other is to divide the transverse barrel 1 into two parts, each transmitting torque through a bayonet-type connection. The bayonet-type structure is simple to install, has low requirements for coaxiality, and low requirements for machining accuracy.

[0038] In a preferred embodiment, the transverse barrel 1 is provided with an insertion part 406, the shoulder 403 abuts against the first bearing seat 7, the insertion part 406 is inserted into the drive shaft 201, the drive shaft 201 is provided with a first U-shaped bayonet 202, the insertion part 406 is provided with a radial positioning protrusion 405, and the positioning protrusion 405 is engaged in the first U-shaped bayonet 202 of the drive shaft 201.

[0039] In a preferred embodiment, the transverse material cylinder 1 includes a transition section 19 and a stirring section 20. The transition section 19 is rotatably sleeved with the first bearing seat 7. Both ends of the transition section 19 are provided with insertion parts 406. Each insertion part 406 is inserted into the stirring section 20 and the drive shaft 201 respectively. The insertion part 406 is provided with radial positioning protrusions 405. The drive shaft 201 is provided with a first U-shaped bayonet 202. The stirring section 20 is provided with a second U-shaped bayonet 407. The positioning protrusions 405 are respectively inserted into the first U-shaped bayonet 202 and the second U-shaped bayonet 407.

[0040] In a preferred embodiment, a partition groove 21 is provided at the connection between the first end retaining ring 5 and the transverse material cylinder 1. The partition groove 21 is located on the side of the first sealing ring 10 away from the transverse material cylinder 1. An air inlet 2101 and an air outlet 2102 are also provided inside the first end retaining ring 5. The air inlet 2101 and the air outlet 2102 are connected to the partition groove 21.

[0041] After the powder is sealed by one or more first sealing rings 10, most of the powder is blocked in the transverse material cylinder 1. When a small part of the powder reaches the partition 21, the powder in the partition 21 is blown out from the outlet 2102 by the clean positive pressure air connected to the air inlet 2101, preventing the powder from continuing to accumulate towards the bearing or motor end.

[0042] The above embodiments are merely preferred technical solutions of this utility model and should not be considered as limitations on this utility model. The protection scope of this utility model should be the technical solution described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the protection scope of this utility model.

Claims

1. A sealing structure for the material conveying rod of a packaging machine, characterized in that: The device includes a transverse material cylinder (1), a rotatable conveying rod (4) inside the transverse material cylinder (1), a spiral blade (401) on the outer wall of the conveying rod (4), an inlet (101) and an outlet (102) near the two ends of the transverse material cylinder (1), a first end retaining ring (5) and a second end retaining ring (6) at the two ends of the transverse material cylinder (1), a first bearing seat (7) and a second bearing seat (701) on the side away from the transverse material cylinder (1) respectively, the two ends of the conveying rod (4) pass through the first end retaining ring (5) and the second end retaining ring (6) respectively, the two ends of the conveying rod (4) are rotatably sleeved with the first bearing seat (7) and the second bearing seat (701) respectively, and the inner walls of the first end retaining ring (5) and the second end retaining ring (6) are provided with a first sealing ring (10) that fits against the conveying rod (4).

2. The sealing structure for the material conveying rod of the packaging machine according to claim 1, characterized in that: One end of the transverse material cylinder (1) is provided with an end frame (11), and a drive motor (2) is provided on the end frame (11). The drive motor (2) is provided with a drive shaft (201), and the drive shaft (201) is connected to the conveying rod (4). The first bearing seat (7) is provided on the end frame (11). The other end of the transverse material cylinder (1) is provided with a rear cover (9). The second end retaining ring (6) is provided between the transverse material cylinder (1) and the rear cover (9). The second bearing seat (701) is provided on the rear cover (9).

3. The sealing structure for the material conveying rod of the packaging machine according to claim 2, characterized in that: The first end retaining ring (5) is provided with an inner through hole (501), which is sleeved with the conveying rod (4). Both ends of the inner through hole (501) are provided with slots (502), and a second sealing ring (12) is provided in the slot (502). The inner wall of the second sealing ring (12) is in contact with the conveying rod (4). The second sealing ring (12) at the end of the first end retaining ring (5) away from the transverse material cylinder (1) is pressed by the end frame (11).

4. The sealing structure for the material conveying rod of the packaging machine according to claim 3, characterized in that: The structure of the second end retaining ring (6) is the same as that of the first end retaining ring (5). Each end of the conveying rod (4) is provided with a compression spring (13). Each compression spring (13) is provided with a compression ring (14) at the end near the first end retaining ring (5) and the second end retaining ring (6). The compression ring (14) abuts against the second sealing ring (12) on the side of the first end retaining ring (5) and the second end retaining ring (6) near the transverse material cylinder (1).

5. The sealing structure for the material conveying rod of the packaging machine according to claim 4, characterized in that: The conveying rod (4) is provided with fixed collars (402) at both ends, and annular baffles (15) are fitted at both ends of the conveying rod (4). Each annular baffle (15) abuts against each fixed collar (402) on one side, and each compression spring (13) abuts against the other side of the annular baffle (15). A third sealing ring (16) is provided on the outer edge of the annular baffle (15). The third sealing ring (16) fits against the inner wall of the transverse material cylinder (1). A fourth sealing ring (18) is provided between the annular baffle (15) and the fixed collar (402).

6. The sealing structure for the material conveying rod of the packaging machine according to claim 4, characterized in that: A settling groove (404) is provided at one end of the transverse material cylinder (1). An annular baffle plate (15) is provided in the settling groove (404). The annular baffle plate (15) is rotatably connected to the conveying rod (4). Each compression spring (13) abuts against the other side of the annular baffle plate (15). A fourth sealing ring (18) is provided between the bottom end of the settling groove (404) and the annular baffle plate (15). A third sealing ring (16) is provided between the transverse material cylinder (1) and the conveying rod (4).

7. The sealing structure for the material conveying rod of the packaging machine according to claim 2, characterized in that: The transverse barrel (1) is provided with a plug-in part (406), which is plugged into the drive shaft (201). The drive shaft (201) is provided with a first U-shaped bayonet (202), and the plug-in part (406) is provided with a radial positioning protrusion (405). The positioning protrusion (405) is inserted into the first U-shaped bayonet (202) of the drive shaft (201).

8. The sealing structure for the material conveying rod of the packaging machine according to claim 2, characterized in that: The transverse material cylinder (1) includes a transition section (19) and a stirring section (20). The transition section (19) is rotatably connected to the first bearing seat (7). The two ends of the transition section (19) are provided with insertion parts (406). Each insertion part (406) is inserted into the stirring section (20) and the drive shaft (201) respectively. The insertion part (406) is provided with a radial positioning protrusion (405). The drive shaft (201) is provided with a first U-shaped bayonet (202). The stirring section (20) is provided with a second U-shaped bayonet (407). The positioning protrusion (405) is respectively inserted into the first U-shaped bayonet (202) and the second U-shaped bayonet (407).

9. The sealing structure for the material conveying rod of the packaging machine according to claim 1, characterized in that: A partition groove (21) is provided at the connection between the first end retaining ring (5) and the transverse material cylinder (1). The partition groove (21) is located on the side of the first sealing ring (10) away from the transverse material cylinder (1). An air inlet (2101) and an air outlet (2102) are also provided inside the first end retaining ring (5). The air inlet (2101) and the air outlet (2102) are connected to the partition groove (21).

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