Main shaft sealing assembly of screw conveyer

Abstract

The utility model relates to the technical field of conveyor main shaft sealing, and discloses a spiral conveyor main shaft sealing assembly which comprises a shaft body and a speed reducer, a first sealing sleeve seat and a second sealing sleeve seat are arranged on the outer surface of the shaft body, a conical column is arranged at one position of the outer surface of the shaft body, and a sealing ring is arranged on the conical column. The outer surface of the shaft body is sleeved with a sealing lantern ring and a wear-resisting ring, a sealing ring is arranged on the surface of the wear-resisting ring, two grooves which are symmetrically formed in the vertical direction are formed in the outer surface of the sealing lantern ring, fixed rods are fixedly connected into the grooves, movable rods are movably inserted into the fixed rods, and the movable rods are fixedly connected into the grooves. The outer surface of the fixing rod is fixedly connected with a spring. According to the main shaft sealing assembly of the spiral conveyor, when the wear-resisting ring is abraded, the movable rod is driven under the elastic force action of the spring, so that the wear-resisting ring is tightly attached to the surface of the conical column, the gap between the wear-resisting ring and the conical column is automatically adjusted, the wear-resisting ring and the conical column are tightly attached all the time, and the good sealing effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of conveyor main shaft seals, in particular to a screw conveyor main shaft seal component. Background Art

[0002] At present, screw conveyors are widely used in various industries, such as building materials, chemical industry, electric power, metallurgy, grain and other industries. They are suitable for horizontal or inclined conveying of powder, granular and small block materials. From the perspective of the displacement direction of the conveyed materials, compared with other conveying equipment, screw conveyors have the characteristics of small cross-sectional size of the whole machine, good sealing performance, and multi-point loading and unloading in the middle. In order to increase the sealing performance of the screw conveyor, it is usually necessary to add a sealing component to its main shaft.

[0003] The existing patent (publication number: CN220566568U) discloses a shaft sealing structure of a screw conveyor, including a driving shaft and a packing box, wherein the packing box body is in the shape of a sleeve, and the packing box is sleeved on the driving shaft. The driving shaft is also sleeved with a first packing, a second packing, an oil ring, a third packing, and a packing gland in sequence, wherein the first packing, the second packing, the oil ring, and the third packing are placed in the packing box, and the packing gland is connected to the packing box by a first bolt. An anti-leakage barrier is fixed on the driving shaft, and the anti-leakage barrier is in the shape of a disc. A bearing gland, a lip seal ring, and a bearing are sleeved on the driving shaft, and the bearing gland is fixedly connected to the lip seal ring and the bearing by a second bolt. The utility model is used to solve the problem that the shaft sealing structure in the prior art has a poor sealing effect and requires frequent maintenance and overhaul by mechanics.

[0004] The shaft sealing structure in the above patented technology is reliable and durable, has stable operation and low production cost. The bearings and reducers are not corroded by the material liquid and the service life is greatly extended. However, in actual use, the packing is squeezed by rotating the first bolt, and the loose packing is compacted to reduce the gap between the packing and the drive shaft. However, it is not convenient to judge the gap between the packing and the drive shaft. When the packing is worn, the gap between the packing and the drive shaft cannot be adjusted in time. Therefore, a screw conveyor main shaft sealing assembly is proposed. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a main shaft sealing assembly for a screw conveyor to solve the problems mentioned in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a screw conveyor main shaft sealing assembly, comprising a shaft body and a reducer, the shaft body is fixedly connected to the output end of the reducer, the outer surface of the shaft body is provided with a first sealing sleeve seat and a second sealing sleeve seat, a conical column is provided at a place on the outer surface of the shaft body, the outer surface of the shaft body is sleeved with a sealing collar and a wear-resistant ring, the surface of the wear-resistant ring is provided with a sealing ring, the wear-resistant ring corresponds to the conical column, the outer surface of the sealing collar is provided with two grooves symmetrically arranged in the upper and lower parts, the interior of the groove is fixedly connected with a fixing rod, the interior of the fixing rod is movably inserted with a movable rod, the outer surface of the fixing rod is fixedly connected with a spring, and the other end of the spring is fixedly connected to the wear-resistant ring.

[0007] Furthermore, the left and right outer surfaces of the first sealing sleeve seat and the second sealing sleeve seat are fixedly connected with side plates, the outer surfaces of the side plates are provided with a plurality of fixing screw holes, and the internal threads of the plurality of fixing screw holes are connected with fixing bolts.

[0008] Furthermore, the sealing ring is composed of two semicircular rings, the outer surfaces of the bottom sides of the sealing rings of the upper two semicircular rings are fixedly connected to the first positioning rod, and the outer surfaces of the top sides of the sealing rings of the lower two semicircular rings are provided with first positioning holes adapted to the first positioning rod.

[0009] Furthermore, the wear-resistant ring is composed of two semi-conical rings, and the outer surfaces on both sides of the bottom of the wear-resistant rings of the two upper semi-conical rings are fixedly connected to the second positioning rod, and the outer surfaces on both sides of the top of the wear-resistant rings of the two lower semi-conical rings are provided with second positioning holes that are compatible with the second positioning rod.

[0010] Furthermore, an oil filling hole is provided on the top outer surface of the wear-resistant ring, an oil filling cavity is provided inside the upper half of the wear-resistant ring, the oil filling cavity is connected with the oil filling hole, a plurality of oil outlet holes are provided on the bottom outer surface of the upper half of the wear-resistant ring, the plurality of oil outlet holes are fixedly connected with the oil filling cavity, an oil filling pipe is fixedly passed through the top outer surface of the first sealing sleeve seat, a telescopic tube is fixedly connected to the bottom outer surface of the oil filling tube, and the telescopic tube is connected with the inside of the oil filling hole.

[0011] Furthermore, an adjusting bolt is threadedly penetrated through the front outer surfaces of the first sealing sleeve seat and the second sealing sleeve seat, and one end of the adjusting bolt is in contact with the fixing rod.

[0012] Furthermore, the first sealing sleeve seat and the second sealing sleeve seat are both fixedly connected with high-elastic rubber rings inside, and the two high-elastic rubber rings form a disc shape.

[0013] Furthermore, sealing gaskets are provided at the connection between the two semicircular ring-shaped sealing collars and at the connection between the two semi-conical ring-shaped wear-resistant rings.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. When the wear-resistant ring of the screw conveyor main shaft seal assembly is worn, the movable rod is driven by the elastic force of the spring, so that the wear-resistant ring is closely attached to the surface of the tapered column, and the gap between the wear-resistant ring and the tapered column is adjusted autonomously, so that they are always closely fitted and play a good sealing role.

[0016] 2. The main shaft sealing assembly of the screw conveyor can be disassembled by removing the fixing bolts to disassemble the first sealing sleeve seat and the second sealing sleeve seat, and the sealing ring and the wear-resistant ring composed of two parts are arranged in combination with the first positioning rod, the first positioning hole, the second positioning rod and the second positioning hole, so that the sealing ring and the wear-resistant ring can be easily replaced. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the front view structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the partial structure of the utility model from the left side;

[0019] Figure 3 For this utility model Figure 2 The enlarged structural diagram at A in the middle;

[0020] Figure 4 This is a schematic diagram of the sealing ring and its related structures of the utility model;

[0021] Figure 5 This is a schematic diagram of the wear-resistant ring of the utility model and its related structures.

[0022] In the figure: 1. shaft body; 2. reducer; 3. first sealing sleeve seat; 4. second sealing sleeve seat; 5. tapered column; 6. sealing sleeve ring; 7. groove; 8. fixing rod; 9. movable rod; 10. spring; 11. wear-resistant ring; 12. side plate; 13. fixing bolt; 14. first positioning hole; 15. first positioning rod; 16. second positioning rod; 17. second positioning hole; 18. oil filling hole; 19. oil outlet hole; 20. oil filling pipe; 21. high elastic rubber ring; 22. adjusting bolt. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Embodiment 1:

[0025] Please refer to Figure 1-Figure 5 The utility model provides a technical solution: a main shaft sealing assembly of a screw conveyor, comprising a shaft body 1 and a reducer 2, the shaft body 1 is fixedly connected to the output end of the reducer 2, the outer surface of the shaft body 1 is provided with a first sealing sleeve seat 3 and a second sealing sleeve seat 4, a conical column 5 is provided at one place on the outer surface of the shaft body 1, a sealing collar 6 and a wear-resistant ring 11 are sleeved on the outer surface of the shaft body 1, a sealing ring is provided on the surface of the wear-resistant ring 11, the wear-resistant ring 11 corresponds to the conical column 5, the outer surface of the sealing collar 6 is provided with two grooves 7 symmetrically arranged up and down, a fixing rod 8 is fixedly connected to the inside of the groove 7, a movable rod 9 is movably inserted in the inside of the fixing rod 8, and an elastic Spring 10, the other end of the spring 10 is fixedly connected to the wear-resistant ring 11. In the present embodiment, with the long-term use of the shaft body 1, the wear-resistant ring 11 will be worn to a certain extent due to the friction between the wear-resistant ring 11 and the tapered column 5. At this time, due to the elastic force of the spring 10, the wear-resistant ring 11 can float to a certain extent. At this time, under the elastic force of the spring 10, the wear-resistant ring 11 is driven to be close to the tapered column 5, reducing the gap between the wear-resistant ring 11 and the tapered column 5, ensuring that the two are always tightly fitted, playing a good sealing role, so that when wear occurs during use, the gap between the wear-resistant ring 11 and the tapered column 5 can be adjusted autonomously, so that it is always tightly fitted, playing a good sealing role.

[0026] The left and right outer surfaces of the first sealing sleeve seat 3 and the second sealing sleeve seat 4 are fixedly connected with side plates 12, and the outer surface of the side plates 12 is provided with a plurality of fixing screw holes, and the internal threads of the plurality of fixing screw holes are connected with fixing bolts 13. In this embodiment, the side plates 12 of the first sealing sleeve seat 3 and the second sealing sleeve seat 4 are then butt-jointed, and fixed with the fixing bolts 13 to complete the installation.

[0027] The sealing ring 6 is composed of two semicircular rings. The outer surfaces of the bottom sides of the sealing ring 6 of the upper two semicircular rings are fixedly connected with first positioning rods 15, and the outer surfaces of the top sides of the sealing ring 6 of the lower two semicircular rings are provided with first positioning holes 14 that are compatible with the first positioning rods 15. In this embodiment, the first positioning rod 15 is inserted into the first positioning hole 14 to install the sealing ring 6.

[0028] The wear-resistant ring 11 is composed of two semi-conical rings. The outer surfaces on both sides of the bottom of the wear-resistant ring 11 of the upper two semi-conical rings are fixedly connected to the second positioning rod 16. The outer surfaces on both sides of the top of the wear-resistant ring 11 of the lower two semi-conical rings are provided with second positioning holes 17 that are compatible with the second positioning rod 16. In this embodiment, the second positioning hole 17 is inserted into the second positioning hole 17 to install the wear-resistant ring 11.

[0029] An oil filling hole 18 is provided on the top outer surface of the wear-resistant ring 11, an oil filling cavity is provided inside the upper half of the wear-resistant ring 11, and the oil filling cavity is connected to the oil filling hole 18. A plurality of oil outlet holes 19 are provided on the bottom outer surface of the upper half of the wear-resistant ring 11, and the plurality of oil outlet holes 19 are fixedly connected to the oil filling cavity. An oil filling pipe 20 is fixedly penetrated through the top outer surface of the first sealing sleeve seat 3, and a telescopic tube is fixedly connected to the bottom outer surface of the oil filling pipe 20, and the telescopic tube is connected to the interior of the oil filling hole 18. In this embodiment, lubricating oil is injected into the interior of the wear-resistant ring 11 through the oil filling pipe 20, and the lubricating oil enters the oil filling hole 18 and the oil filling cavity through the telescopic tube and is finally discharged through the oil outlet hole 19.

[0030] An adjusting bolt 22 is threadedly passed through the front outer surfaces of the first sealing sleeve seat 3 and the second sealing sleeve seat 4, and one end of the adjusting bolt 22 is in contact with the fixing rod 8. In this embodiment, when used later, the position of the fixing rod 8 in the groove 7 is adjusted by tightening the adjusting bolt 22 to control the elastic force of the spring 10.

[0031] Highly elastic rubber rings 21 are fixedly connected inside the first sealing sleeve seat 3 and the second sealing sleeve seat 4. The two highly elastic rubber rings 21 form a disc shape. In this embodiment, the highly elastic rubber ring 21 abuts against one side of the wear-resistant ring 11 to prevent it from moving.

[0032] Sealing gaskets are provided at the connection between the two semicircular sealing rings 6 and the connection between the two semi-conical ring-shaped wear-resistant rings 11. In this embodiment, the sealing gaskets are used to increase the sealing performance between the two sealing rings 6 and the two wear-resistant rings 11.

[0033] Working principle: When the utility model is in use, the reducer 2 drives the shaft body 1 to rotate, and a sealing effect is achieved through the sealing ring 6 and the sealing ring on the surface of the wear-resistant ring 11. With the long-term use of the shaft body 1, the friction between the wear-resistant ring 11 and the tapered column 5 causes the wear-resistant ring 11 to wear to a certain extent. At this time, due to the elastic force of the spring 10, the wear-resistant ring 11 can float to a certain extent. At this time, under the elastic force of the spring 10, the wear-resistant ring 11 is driven to be close to the tapered column 5, reducing the gap between the wear-resistant ring 11 and the tapered column 5 to ensure that the two are always tightly fitted and have a good sealing effect. Therefore, when wear occurs during use, the gap between the wear-resistant ring 11 and the tapered column 5 can be adjusted autonomously to ensure that they are always tightly fitted and have a good sealing effect. When used later, the position of the fixing rod 8 in the groove 7 can be adjusted by tightening the adjusting bolt 22 to control the elastic force of the spring 10.

[0034] When it is necessary to replace the sealing ring 6 or the wear-resistant ring 11 inside the first sealing sleeve seat 3 and the second sealing sleeve seat 4, unscrew the fixing bolts 13, disassemble the first sealing sleeve seat 3 and the second sealing sleeve seat 4, disassemble the sealing ring 6 or the wear-resistant ring 11, and replace the new sealing ring 6 or the wear-resistant ring 11, put the two parts of the sealing ring 6 or the wear-resistant ring 11 at the appropriate position of the shaft body 1, insert the first positioning rod 15 into the first positioning hole 14, insert the second positioning hole 17 into the second positioning hole 17, install the sealing ring 6 and the wear-resistant ring 11, then connect the first sealing sleeve seat 3 and the second sealing sleeve seat 4, fix them with the fixing bolts 13, and complete the installation.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A screw conveyor main shaft sealing assembly, comprising a shaft body (1) and a reducer (2), characterized in that: The shaft body (1) is fixedly connected to the output end of the reducer (2); the outer surface of the shaft body (1) is provided with a first sealing sleeve seat (3) and a second sealing sleeve seat (4); a conical column (5) is provided at one point on the outer surface of the shaft body (1); a sealing sleeve ring (6) and a wear-resistant ring (11) are sleeved on the outer surface of the shaft body (1); a sealing ring is provided on the surface of the wear-resistant ring (11); the wear-resistant ring (11) corresponds to the conical column (5); the outer surface of the sealing sleeve ring (6) is provided with two grooves (7) symmetrically arranged in an upper and lower manner; a fixing rod (8) is fixedly connected inside the groove (7); a movable rod (9) is movably inserted inside the fixing rod (8); a spring (10) is fixedly connected to the outer surface of the fixing rod (8); the other end of the spring (10) is fixedly connected to the wear-resistant ring (11).

2. A screw conveyor main shaft seal assembly according to claim 1, characterized in that: The left and right outer surfaces of the first sealing sleeve seat (3) and the second sealing sleeve seat (4) are both fixedly connected to side plates (12), and the outer surfaces of the side plates (12) are provided with a plurality of fixing screw holes, and the internal threads of the plurality of fixing screw holes are connected to fixing bolts (13).

3. The main shaft seal assembly of a screw conveyor according to claim 1, characterized in that: The sealing collar (6) is composed of two semicircular rings, the outer surfaces of the bottom sides of the upper two semicircular rings of the sealing collar (6) are fixedly connected to first positioning rods (15), and the outer surfaces of the top sides of the sealing collar (6) of the lower two semicircular rings are provided with first positioning holes (14) adapted to the first positioning rods (15).

4. The screw conveyor main shaft seal assembly according to claim 1, characterized in that: The wear-resistant ring (11) is composed of two semi-conical rings, and the outer surfaces on both sides of the bottom of the wear-resistant ring (11) of the two upper semi-conical rings are fixedly connected to the second positioning rod (16), and the outer surfaces on both sides of the top of the wear-resistant ring (11) of the two lower semi-conical rings are provided with second positioning holes (17) adapted to the second positioning rod (16).

5. The main shaft seal assembly of a screw conveyor according to claim 1, characterized in that: The top outer surface of the wear-resistant ring (11) is provided with an oil filling hole (18), the interior of the upper half of the wear-resistant ring (11) is provided with an oil filling cavity, the oil filling cavity is connected to the oil filling hole (18), the bottom outer surface of the upper half of the wear-resistant ring (11) is provided with a plurality of oil outlet holes (19), the plurality of oil outlet holes (19) are fixedly connected to the oil filling cavity, the top outer surface of the first sealing sleeve (3) is fixedly penetrated with an oil filling pipe (20), the bottom outer surface of the oil filling pipe (20) is fixedly connected with a telescopic pipe, the telescopic pipe is connected to the interior of the oil filling hole (18).

6. The main shaft seal assembly of a screw conveyor according to claim 1, characterized in that: An adjusting bolt (22) is threadedly penetrated through the front outer surfaces of the first sealing sleeve seat (3) and the second sealing sleeve seat (4), and one end of the adjusting bolt (22) is in contact with the fixing rod (8).

7. The main shaft seal assembly of a screw conveyor according to claim 1, characterized in that: The first sealing sleeve seat (3) and the second sealing sleeve seat (4) are both fixedly connected with a high-elastic rubber ring (21) inside, and the two high-elastic rubber rings (21) form a disc shape.

8. The main shaft seal assembly of a screw conveyor according to claim 1, characterized in that: The connection between the two semicircular ring-shaped sealing collars (6) and the connection between the two semi-conical ring-shaped wear-resistant rings (11) are both provided with sealing gaskets.

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