Sealing device for end head of transmission shaft of stirring and conveying equipment

Abstract

The utility model provides a stirring and conveying equipment transmission shaft end sealing device, and relates to the technical field of transmission shaft end sealing, the stirring and conveying equipment transmission shaft end sealing device comprises a U-shaped casing, the right side surface of the U-shaped casing is provided with a driving device, the U-shaped casing is provided with a feeding port, and the right side surface of the U-shaped casing is provided with a discharging port. A discharging pipe is fixedly connected to the lower side surface of the U-shaped machine shell, a rear end plate and a front end plate are fixedly connected to the left side surface and the right side surface of the U-shaped machine shell correspondingly, inner threads are fixedly connected to the inner wall of the front end plate and the inner wall of the rear end plate correspondingly, and a mounted bearing is fixedly connected to the left side surface of the rear end plate. By means of the arrangement of the multiple layers of graphite packing, the rotating position of the transmission shaft can be lubricated, material leakage can be avoided, the situation that the transmission shaft drives the nuts to rotate to cause sealing failure when rotating is avoided through cooperation of the double-nut pressing head and the internal threads, meanwhile, during maintenance, the double-nut pressing head is conveniently fastened again, and the service life of the transmission shaft is prolonged. Therefore, leakage of materials is prevented.

Description

Technical Field

[0001] This utility model relates to the field of transmission shaft end sealing technology, and in particular to a transmission shaft end sealing device for a mixing and conveying equipment. Background Technology

[0002] As a core component of mixing and conveying equipment, the rationality and leak-proof effect of the end seal of the drive shaft directly determine the performance of the equipment and, consequently, its market competitiveness. The left and right shaft end structures of the mixing and conveying equipment serve to support and assist the mixing device. The inner end of the shaft end structure is in direct contact with the material and is immersed in the material during operation. Particles or liquids in the material can enter the shaft end structure through the shaft end seal seam, damaging the shaft end seal and the shaft end structure, reducing its reliability. Damage to the shaft end can cause the mixing device to fail to mix, resulting in blockages and hindering construction efficiency.

[0003] In existing technologies, the shaft and housing are connected by a bearing and a sealing ring. This can lead to material entering the bearing's internal gap and damaging the bearing. As a result, the material can leak out of the housing through the shaft end sealing structure, causing material leakage and loss. Workers also need to frequently clean the production site. In view of this, we propose a sealing device for the end of the drive shaft of a mixing and conveying equipment. Summary of the Invention

[0004] The purpose of this utility model is to provide a sealing device for the end of the drive shaft of a mixing and conveying equipment, so as to solve the problem that when material enters the internal gap of the bearing and damages the bearing, the material will leak to the outside of the housing through the shaft end sealing structure, resulting in material leakage and loss.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a sealing device for the end of a transmission shaft of a mixing and conveying equipment, comprising a U-shaped housing, a driving device disposed on the right side surface of the U-shaped housing, a feed inlet on the U-shaped housing, a discharge pipe fixedly connected to the lower side surface of the U-shaped housing, a rear end plate and a front end plate fixedly connected to the left and right sides of the U-shaped housing respectively, internal threads fixedly connected to the inner walls of the front end plate and the rear end plate, a bearing with a seat fixedly connected to the left side surface of the rear end plate, a transmission shaft rotatably sleeved inside the bearing with a seat, the right end of the transmission shaft rotatably penetrating into the interior of the front end plate, the transmission shaft being connected to the driving device, a graphite packing movably sleeved on the inner wall of the internal thread, a double nut pressure head sleeved on the internal thread of the internal thread, the double nut pressure head contacting the graphite packing, and a cleanup device disposed on the U-shaped housing.

[0006] Preferably, the impurity removal device includes an impurity removal box, which is fixedly connected to the upper surface of the U-shaped housing, and the interior of the impurity removal box has a circular cavity.

[0007] Preferably, the lower side of the circular cavity extends out to the lower surface of the impurity removal box, and a drive shaft is rotatably connected to the inner wall of the circular cavity.

[0008] Preferably, two extension plates are fixedly connected to the outer surface of the drive shaft, and a first electromagnet is fixedly connected to the end of the extension plate away from the drive shaft. A collection cavity is formed on the inner wall of the circular cavity.

[0009] Preferably, a second electromagnet is fixedly connected to the inner wall of the collecting cavity, and a collecting drawer is slidably connected to the inner wall of the collecting cavity.

[0010] Preferably, the collection drawer extends outside the waste removal box, and two arc-shaped electrical plates are fixedly connected to the inner wall of the circular cavity.

[0011] Preferably, the arc-shaped energized plate is in contact with the surface of the first electromagnet on the side away from the drive shaft.

[0012] Preferably, the first electromagnet has an adsorption groove on the side surface away from the drive shaft, and the left side surface of the impurity removal box is also fixedly connected to a drive device, which is connected to the drive shaft.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. The sealing device at the end of the drive shaft of this mixing and conveying equipment utilizes a multi-layer graphite packing to not only lubricate the rotating parts of the drive shaft but also prevent material leakage. Furthermore, the double nut pressure head with internal threads prevents the nut from rotating during the drive shaft's rotation, thus avoiding seal failure. Additionally, during maintenance, it is easy to re-tighten the double nut pressure head, thereby preventing material leakage.

[0015] 2. The sealing device at the end of the drive shaft of the mixing and conveying equipment uses two rotatable first electromagnets, which can not only automatically attract iron filings in the material, but also easily transfer the iron filings on the first electromagnets to the inside of the collection drawer after rotation, without the need to manually clean the first electromagnets. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0017] Figure 1 This is a schematic diagram of the structure of a sealing device at the end of the drive shaft of a mixing and conveying equipment according to the present invention;

[0018] Figure 2 This is a plan view of the present invention;

[0019] Figure 3 This is a schematic diagram of the interior of the impurity removal box of this utility model;

[0020] Figure 4 for Figure 2 Enlarged view of point A in the middle.

[0021] The components include: 1. U-shaped housing; 2. Drive unit; 3. Feed inlet; 4. Discharge pipe; 5. Rear end plate; 6. Front end plate; 7. Bearing with seat; 8. Drive shaft; 9. Graphite packing; 10. Internal thread; 11. Double nut pressure head; 12. Impurity removal box; 13. Circular cavity; 14. Drive shaft; 15. Extension plate; 16. First electromagnet; 17. Collection chamber; 18. Second electromagnet; 19. Collection drawer; 20. Arc-shaped energized plate; 21. Adsorption groove. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0023] like Figure 1-4 This specific embodiment provides a sealing device for the end of a drive shaft of a mixing and conveying equipment, including a U-shaped housing 1. A drive device 2 is provided on the right side surface of the U-shaped housing 1. A feed inlet 3 is provided on the U-shaped housing 1. A discharge pipe 4 is fixedly connected to the lower side surface of the U-shaped housing 1. A rear end plate 5 and a front end plate 6 are fixedly connected to the left and right sides of the U-shaped housing 1, respectively. An internal thread 10 is fixedly connected to the inner wall of both the front end plate 6 and the rear end plate 5. A bearing 7 with a seat is fixedly connected to the left side surface of the rear end plate 5. A drive shaft 8 is rotatably sleeved inside the bearing 7. The right end of the drive shaft 8 rotatably penetrates into the interior of the front end plate 6. The drive shaft 8 is connected to the drive device 2. The inner wall of the inner thread 10 is movably fitted with a graphite packing 9. The inner thread of the inner thread 10 is fitted with a double nut pressure head 11, which contacts the graphite packing 9. A cleanup device is provided on the U-shaped housing 1. The multi-layer graphite packing 9 can not only lubricate the rotating parts of the drive shaft 8, but also prevent material leakage. The double nut pressure head 11, in conjunction with the inner thread 10, prevents the nuts from rotating when the drive shaft 8 rotates, thus preventing seal failure. At the same time, it is convenient to re-tighten the double nut pressure head 11 during maintenance, thereby preventing material leakage.

[0024] Furthermore, the impurity removal device includes an impurity removal box 12, which is fixedly connected to the upper surface of the U-shaped housing 1. A circular cavity 13 is formed inside the impurity removal box 12, extending from the lower surface of the box. A drive shaft 14 is rotatably connected to the inner wall of the circular cavity 13. Two extension plates 15 are fixedly connected to the outer surface of the drive shaft 14. A first electromagnet 16 is fixedly connected to the end of each extension plate 15 away from the drive shaft 14. A collection cavity 17 is formed on the inner wall of the circular cavity 13, and a second electromagnet 18 is fixedly connected to the inner wall of the collection cavity 17. A collection drawer 19 is slidably connected to the inner wall of the collection cavity 17, extending out from the impurity removal box. On the outside of the box 12, two arc-shaped energized plates 20 are fixedly connected to the inner wall of the circular cavity 13. The arc-shaped energized plates 20 are in contact with the surface of the first electromagnet 16 away from the drive shaft 14. The surface of the first electromagnet 16 away from the drive shaft 14 is provided with an adsorption groove 21. The left side surface of the impurity removal box 12 is also fixedly connected to the drive device 2. The drive device 2 on the impurity removal box 12 is connected to the drive shaft 14. By using the two rotatable first electromagnets 16, not only can the iron filings in the material be automatically adsorbed, but after rotation, the iron filings on the first electromagnets 16 can be transferred to the inside of the collection drawer 19 in a relatively convenient way, without the need to manually clean the first electromagnets 16.

[0025] Among them, the drive device 2 is also equipped with a power supply, wires, controller and microcomputer, etc. Since they are not the main structures, they will not be described in detail. At the same time, in order to ensure the sealing, the graphite packing 9 on one side shall not be less than three turns.

[0026] Working principle: When material enters the equipment through the feed inlet 3, the drive device 2 drives the transmission shaft 8 to stir and convey the material. During the rotation of the transmission shaft 8, the material inevitably reaches the front plate 6 and the rear plate 5. The graphite packing 9 can seal the gap between the inner thread 10 and the transmission shaft 8, and also provides lubrication. The double nut pressure head 11 not only fixes the graphite packing 9, but also prevents the transmission shaft 8 from rotating the nuts, which could cause the seal at the graphite packing 9 to fail. At the same time, when the material moves inside the equipment, iron filings and other debris inside are attracted by the first electromagnet 16. After the first electromagnet 16 has been working for a period of time, it can... The extension plate 15 is rotated by the drive device 2 in conjunction with the drive shaft 14. When the extension plate 15 rotates, it will simultaneously drive the two first electromagnets 16, thereby causing the first electromagnets 16 in the idle state to rotate to the lower side. After the first electromagnets 16 are in operation, they rotate to the idle area aligned with the collection cavity 17. When the first electromagnets 16 are aligned with the collection cavity 17, since there is no arc-shaped energized plate 20 here, the idle first electromagnets 16 will be de-energized. At this time, the iron filings on the idle first electromagnets 16 can be attracted and collected by the second electromagnets 18 on the inner wall of the collection cavity 17. Then, the second electromagnets 18 are de-energized so that the iron filings can enter the interior of the collection drawer 19.

[0027] The specific embodiments of the present invention described above do not constitute a limitation on the scope of protection of the present invention. Any other corresponding changes and modifications made in accordance with the technical concept of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A sealing device for the end of the drive shaft of a mixer-conveyor, comprising a U-shaped casing (1), characterized in that, A drive device (2) is provided on the right side surface of the U-shaped housing (1). A feed inlet (3) is provided on the U-shaped housing (1). A discharge pipe (4) is fixedly connected to the lower side surface of the U-shaped housing (1). A rear end plate (5) and a front end plate (6) are fixedly connected to the left and right sides of the U-shaped housing (1), respectively. An inner thread (10) is fixedly connected to the inner wall of both the front end plate (6) and the rear end plate (5). A bearing with a seat is fixedly connected to the left side surface of the rear end plate (5). 7) The inside of the bearing (7) with seat is fitted with a drive shaft (8). The right end of the drive shaft (8) rotates through the inside of the front end plate (6). The drive shaft (8) is connected to the drive device (2). The inner wall of the inner thread (10) is fitted with a graphite packing (9). The inner thread of the inner thread (10) is fitted with a double nut pressure head (11). The double nut pressure head (11) contacts the graphite packing (9). The U-shaped housing (1) is equipped with a cleaning device.

2. A drive shaft end head seal for a mixer-conveyor apparatus as defined in claim 1, wherein, The impurity removal device includes an impurity removal box (12), which is fixedly connected to the upper surface of the U-shaped housing (1), and a circular cavity (13) is provided inside the impurity removal box (12).

3. A drive shaft end head seal for a mixer-conveyor apparatus as defined in claim 2, wherein: The lower side of the circular cavity (13) extends out to the lower surface of the cleaning box (12), and the inner wall of the circular cavity (13) is rotatably connected to the drive shaft (14).

4. A drive shaft end head seal for a mixer-conveyor apparatus as defined in claim 3, wherein: Two extension plates (15) are fixedly connected to the outer surface of the drive shaft (14). A first electromagnet (16) is fixedly connected to one end of the extension plate (15) away from the drive shaft (14). A collection cavity (17) is opened on the inner wall of the circular cavity (13).

5. A drive shaft end head seal for a mixer-conveyor apparatus as defined in claim 4, wherein: The inner wall of the collecting cavity (17) is fixedly connected to a second electromagnet (18), and the inner wall of the collecting cavity (17) is slidably connected to a collecting drawer (19).

6. A drive shaft end head seal for a mixer-conveyor apparatus as defined in claim 5, wherein, The collection drawer (19) extends out of the outside of the cleaning box (12), and two arc-shaped electric plates (20) are fixedly connected to the inner wall of the circular cavity (13).

7. A sealing device for the drive shaft end of a mixing and conveying equipment according to claim 6, characterized in that, The arc-shaped energized plate (20) is in contact with the surface of the first electromagnet (16) away from the drive shaft (14).

8. A drive shaft end head seal for a mixer-conveyor apparatus as defined in claim 7, wherein, An adsorption groove (21) is provided on the side surface of the first electromagnet (16) away from the drive shaft (14). A drive device (2) is also fixedly connected to the left side surface of the impurity removal box (12). The drive device (2) on the impurity removal box (12) is connected to the drive shaft (14).

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