Novel sealing structure of unloading screw of horizontal siphon decanter centrifuge

Abstract

The utility model discloses a novel sealing structure of unloading screw of horizontal siphon scraper centrifuge, including spiral casing, be equipped with through -hole on the spiral casing, fixedly connected with bearing chamber in the through -hole, install spiral axle head in bearing chamber, install sliding bearing between spiral axle head with bearing chamber, fixedly connected with the air cock on bearing chamber, the air cock is connected with the pressure gas source, install two flood seal on spiral axle head, flood seal is located in bearing chamber, the air cock is located between two flood sealings. The utility model discloses through the air cock in bearing chamber adds the compressed air, bearing chamber is always in the positive pressure state, prevents the material and enters the sliding rotation position, ensures the air film formation in sliding bearing position simultaneously, reaches good lubricating effect.

Description

Technical Field

[0001] This utility model relates to the field of mechanical seal structure technology, and in particular to a novel sealing structure for the unloading spiral of a horizontal siphon scraper centrifuge. Background Technology

[0002] Currently, most horizontal siphon scraper centrifuges on the market use bearing seal structures for their discharge screws. However, the popular screw seal devices have significant drawbacks: firstly, they require frequent maintenance; secondly, wear in the sealing chamber can easily lead to metal particle contamination and grease contamination in the lubrication points, resulting in unstable quality of the produced lithium carbonate products and a significant risk of contamination. Therefore, a new sealing structure for the discharge screw of a horizontal siphon scraper centrifuge is designed to address these issues. Utility Model Content

[0003] The purpose of this invention is to provide a novel sealing structure for the unloading spiral of a horizontal siphon scraper centrifuge, in order to solve the problems existing in the prior art. Compressed air is introduced into the bearing chamber through the air hole, and the bearing chamber is always in a positive pressure state, preventing material from entering the sliding rotating parts. At the same time, it ensures that an air film is formed in the sliding bearing part, achieving a good lubrication effect. This solves the defects of existing spiral sealing devices, such as high maintenance frequency, grease contamination, metal particle contamination, and unstable product quality.

[0004] To achieve the above objectives, this utility model provides the following solution: This utility model provides a novel sealing structure for the unloading spiral of a horizontal siphon scraper centrifuge, comprising:

[0005] A spiral housing has a through hole, a bearing chamber is fixedly connected inside the through hole, a spiral shaft head is installed inside the bearing chamber, a sliding bearing is installed between the spiral shaft head and the bearing chamber, an air nozzle is fixedly connected to the bearing chamber, the air nozzle is connected to a compressed air source, two plug seals are installed on the spiral shaft head, the plug seals are located inside the bearing chamber, and the air nozzle is located between the two plug seals.

[0006] Preferably, a sealing cap is installed on the spiral shell, the through hole is located inside the sealing cap, and a gap adjustment ring is installed between the sealing cap and the spiral shell.

[0007] Preferably, a groove is provided on the inner edge of the bearing chamber, and a retaining spring is installed in the groove, the retaining spring abutting against the plug seal.

[0008] Preferably, the spiral shaft head is fixedly connected to the spiral body.

[0009] This utility model discloses the following technical effects: In this device, a new sealing form is designed and manufactured. The new seal is equipped with an air nozzle, through which an equivalent amount of compressed air is blown in to prevent material from entering the seal and reduce the wear of the sliding bearing caused by material feeding. At the same time, the sliding contact surface inside the seal is always kept lubricated by an air film, eliminating direct friction between the spiral shaft head and the sliding bearing, thereby greatly reducing the maintenance frequency of the spiral seal structure. This not only reduces downtime and improves production efficiency, but also significantly reduces the cost caused by frequent maintenance. It also reduces the entry of metal particles and lubricating grease generated by mechanical wear into the lithium carbonate product, effectively improving the quality and stability of the lithium carbonate product.

[0010] This device not only extends the service life of the sealing device, but also ensures the lubrication process during lithium carbonate production without the introduction of impurities, thus improving economic efficiency. The excellent sealing structure ensures that materials cannot enter the sliding contact parts of the equipment, preventing frictional impurities and improving the service life of the sealing device and the continuity of production. Compressed air is introduced into the bearing chamber through the air nozzle, keeping the bearing chamber under positive pressure at all times, preventing materials from entering the sliding rotating parts, and ensuring the formation of an air film at the sliding bearing parts to achieve good lubrication. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of the novel sealing structure of the unloading spiral of the horizontal siphon scraper centrifuge of this utility model;

[0013] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0014] The components are: 1. Bearing chamber; 2. Air nozzle; 3. Spiral body; 4. Spiral shaft head; 5. Snap ring; 6. Plug seal; 7. Sliding bearing; 8. Gap adjusting ring; 9. Sealing gland; 10. Spiral shell. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0017] Reference Figure 1-2 This utility model provides a novel sealing structure for the unloading spiral of a horizontal siphon scraper centrifuge, comprising:

[0018] The spiral housing 10 has a through hole, and a bearing chamber 1 is fixedly connected inside the through hole. A spiral shaft head 4 is installed inside the bearing chamber 1. A sliding bearing 7 is installed between the spiral shaft head 4 and the bearing chamber 1. An air nozzle 2 is fixedly connected to the bearing chamber 1. The air nozzle 2 is connected to a compressed air source. Two plug seals 6 are installed on the spiral shaft head 4. The plug seals 6 are located inside the bearing chamber 1, and the air nozzle 2 is located between the two plug seals 6.

[0019] In this device, the spiral shaft head 4 is rotatably connected to the bearing chamber 1 through the sliding bearing 7. The continuous supply of compressed air through the air nozzle 2 ensures that the rotating parts play a role in air film lubrication, removes the material in the rotating parts, eliminates direct friction between the shaft head and the sliding bearing, and extends the service life of the sliding bearing 7 and the spiral shaft head 4.

[0020] In this embodiment, the sliding bearing 7 is made of a polymer wear-resistant material.

[0021] The compressed air source can continuously supply 1.5-0.2 MPa of compressed air.

[0022] In a further optimized design, a sealing cap 9 is installed on the spiral housing 10, with a through hole located inside the sealing cap 9, and a gap adjustment ring 8 is installed between the sealing cap 9 and the spiral housing 10.

[0023] The sealing gland 9 is used to seal the spiral shaft head 4. The sealing gland 9 and the gap adjusting ring 8 are connected to the spiral housing 10 by practical bolts.

[0024] The design is further optimized by providing a slot on the inner edge of the bearing chamber 1, in which a retaining spring 5 is installed and abuts against the plug seal 6.

[0025] The snap ring 5 is used to secure the plug seal 6.

[0026] The design was further optimized so that the spiral shaft head 4 is fixedly connected to the spiral body 3.

[0027] In this device, a new sealing method is designed and manufactured. The new seal is equipped with an air nozzle 2, through which an equivalent amount of compressed air is blown in to prevent material from entering the seal and reduce the wear of the sliding bearing 7 caused by material feeding. At the same time, the sliding contact surface inside the seal is always kept lubricated by an air film, eliminating direct friction between the spiral shaft head 4 and the sliding bearing 7, thereby greatly reducing the maintenance frequency of the spiral seal structure. This not only reduces downtime and improves production efficiency, but also significantly reduces the cost caused by frequent maintenance. It also reduces the entry of metal particles and lubricating grease caused by mechanical wear into the lithium carbonate product, effectively improving the quality and stability of the lithium carbonate product.

[0028] This device not only extends the service life of the sealing device, but also ensures the lubrication process during lithium carbonate production without the introduction of impurities, thus improving economic efficiency. The excellent sealing structure ensures that materials cannot enter the sliding contact parts of the equipment, preventing frictional impurities and improving the service life of the sealing device and the continuity of production. Compressed air is introduced into the bearing chamber through the air nozzle, keeping the bearing chamber under positive pressure at all times, preventing materials from entering the sliding rotating parts, and ensuring the formation of an air film at the sliding bearing parts to achieve good lubrication.

[0029] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0030] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A novel sealing structure for the unloading spiral of a horizontal siphon scraper centrifuge, characterized in that, include: A spiral housing (10) has a through hole, a bearing chamber (1) is fixedly connected in the through hole, a spiral shaft head (4) is installed in the bearing chamber (1), a sliding bearing (7) is installed between the spiral shaft head (4) and the bearing chamber (1), an air nozzle (2) is fixedly connected to the bearing chamber (1), the air nozzle (2) is connected to a compressed air source, two plug seals (6) are installed on the spiral shaft head (4), the plug seals (6) are located in the bearing chamber (1), and the air nozzle (2) is located between the two plug seals (6); The bearing chamber (1) has a slot on its inner edge, and a retaining spring (5) is installed in the slot. The retaining spring (5) abuts against the plug seal (6).

2. The novel sealing structure of the unloading spiral of a horizontal siphon scraper centrifuge according to claim 1, characterized in that: A sealing cap (9) is installed on the spiral shell (10), the through hole is located inside the sealing cap (9), and a gap adjustment ring (8) is installed between the sealing cap (9) and the spiral shell (10).

3. The novel sealing structure of the unloading spiral of a horizontal siphon scraper centrifuge according to claim 1, characterized in that: The spiral shaft head (4) is fixedly connected to the spiral body (3).

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