Rotary joint with good sealing performance for circulating rotary drum

Abstract

The utility model relates to a rotary joint with good sealing performance for a circulating drum, which belongs to the field of circulating drums and comprises a shaft head flange. According to the rotary joint with the good sealing performance and used for the circulating rotary drum, the stainless steel ring is arranged on the hopper flange, the second corrosion-resistant O-shaped ring and the corrosion-resistant silica gel ring are arranged between the stainless steel ring and the hopper flange, the sealing performance between the stainless steel ring and the hopper flange is improved through the second corrosion-resistant O-shaped ring and the corrosion-resistant silica gel ring, and installation is convenient; the lubrication-free wear-resistant nylon ring and the first corrosion-resistant O-shaped ring are arranged between the stainless steel ring and the shaft head flange, the stainless steel ring plays a role in supporting the lubrication-free wear-resistant nylon ring, meanwhile, the sealing performance between the shaft head flange and the stainless steel ring is guaranteed, and the shaft head flange can rotate along with the rotary drum after being connected with the shaft head; the rotary joint has the advantages of being low in cost, convenient to install, good in sealing performance and long in service life.

Description

Technical Field

[0001] The utility model relates to the technical field of circulating drums, in particular to a rotary joint with good sealing performance used on a circulating drum. Background Art

[0002] During the leather making process, the raw hides need to be turned over in the drum to complete the steps of washing, pickling, tanning, dyeing, etc. The drum can ensure that the leather is evenly treated during these chemical treatments, thereby ensuring the quality of the final product. As a rotating part of the equipment, the drum works in a similar way to the drum in a centrifuge or flour mill. During the leather making process, the raw hides tumble in the drum together with water and other chemicals to achieve the desired chemical reaction and physical treatment effects.

[0003] Since the leather circulation drum needs to circulate the drum liquid in the drum and the liquid in the hopper outside the drum shaft head back and forth continuously, and the drum is rotating and the hopper is stationary, a rotary joint connecting them is needed to connect the rotating drum and the stationary hopper. According to the characteristics of the circulation drum such as low speed, high circulation frequency and long working time, a rotary joint is proposed which is more suitable for the use characteristics and occasions of the circulation drum than many rotary joints on the market. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a rotary joint with good sealing performance for use on a circulating drum, which has the advantages of low cost, convenient installation, good sealing performance, long service life, etc.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a rotary joint with good sealing performance for use on a circulating drum, comprising a shaft head flange, a lubrication-free wear-resistant nylon ring is arranged at the bottom of the shaft head flange, a stainless steel ring is arranged at the bottom of the lubrication-free wear-resistant nylon ring, a hopper flange is arranged inside the side of the stainless steel ring away from the lubrication-free wear-resistant nylon ring, a corrosion-resistant silicone ring is arranged on the outside of the hopper flange, and a second corrosion-resistant O-ring is arranged between the corrosion-resistant silicone ring and the stainless steel ring.

[0006] Furthermore, an embedding groove is provided on one side of the shaft head flange close to the lubrication-free wear-resistant nylon ring, and an annular protrusion is integrally fixed to one side of the lubrication-free wear-resistant nylon ring.

[0007] Furthermore, a first annular groove is formed on the annular protrusion, a first corrosion-resistant O-ring is clamped inside the first annular groove, and the first corrosion-resistant O-ring is clamped between the embedding groove and the first annular groove.

[0008] Furthermore, the annular protrusion is embedded in the embedding groove, and the annular protrusion is adapted to the embedding groove.

[0009] Furthermore, a second annular groove is formed on one side of the stainless steel ring close to the corrosion-resistant silicone ring, and the second corrosion-resistant O-ring is clamped inside the second annular groove.

[0010] Furthermore, the diameter of the lubrication-free wear-resistant nylon ring is larger than the diameter of the stainless steel ring, and the diameter of the corrosion-resistant silicone ring is smaller than the diameter of the stainless steel ring.

[0011] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0012] The rotary joint with good sealing performance used on the circulating drum is achieved by arranging a stainless steel ring on the hopper flange, and arranging a second corrosion-resistant O-ring and a corrosion-resistant silicone ring between the stainless steel ring and the hopper flange. The second corrosion-resistant O-ring and the corrosion-resistant silicone ring increase the sealing performance between the stainless steel ring and the hopper flange, and are convenient for installation. A lubrication-free wear-resistant nylon ring and a first corrosion-resistant O-ring are arranged between the stainless steel ring and the shaft head flange. The stainless steel ring supports the lubrication-free wear-resistant nylon ring and ensures the sealing performance between the shaft head flange and the stainless steel ring. After the shaft head flange is connected to the shaft head, it can rotate with the drum, and the hopper flange is connected to the hopper in a static state. The rotary joint has the advantages of low cost, easy installation, good sealing performance and long service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 It is a top view of the lubrication-free wear-resistant nylon ring of the utility model structure.

[0015] In the figure: 1. Shaft head flange; 2. First corrosion-resistant O-ring; 3. Lubrication-free wear-resistant nylon ring; 4. Stainless steel ring; 5. Second corrosion-resistant O-ring; 6. Corrosion-resistant silicone ring; 7. Hopper flange. DETAILED DESCRIPTION

[0016] 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.

[0017] See also Figure 1-2In this embodiment, a rotary joint with good sealing performance for a circulating drum includes a shaft head flange 1, a lubrication-free wear-resistant nylon ring 3 is arranged at the bottom of the shaft head flange 1, a stainless steel ring 4 is arranged at the bottom of the lubrication-free wear-resistant nylon ring 3, a hopper flange 7 is arranged inside the side of the stainless steel ring 4 away from the lubrication-free wear-resistant nylon ring 3, a corrosion-resistant silicone ring 6 is sleeved on the outside of the hopper flange 7, a second corrosion-resistant O-ring 5 is arranged between the corrosion-resistant silicone ring 6 and the stainless steel ring 4, a second annular groove is opened on the side of the stainless steel ring 4 close to the corrosion-resistant silicone ring 6, and the second corrosion-resistant O-ring 5 is clamped in the inside of the second annular groove.

[0018] It can be understood that by arranging a stainless steel ring 4 on the hopper flange 7, and arranging a second corrosion-resistant O-ring 5 and a corrosion-resistant silicone ring 6 between the stainless steel ring 4 and the hopper flange 7, the second corrosion-resistant O-ring 5 and the corrosion-resistant silicone ring 6 increase the sealing between the stainless steel ring 4 and the hopper flange 7, and facilitate installation.

[0019] Among them, a lubrication-free wear-resistant nylon ring 3 and a first corrosion-resistant O-ring 2 are arranged between the stainless steel ring 4 and the shaft head flange 1. The stainless steel ring 4 supports the lubrication-free wear-resistant nylon ring 3 and ensures the sealing between the shaft head flange 1 and the stainless steel ring 4. After the shaft head flange 1 is connected to the shaft head, it can rotate with the drum. The hopper flange 7 is connected to the hopper and is in a static state. The rotary joint has the advantages of low cost, easy installation, good sealing and long service life.

[0020] In this embodiment, an embedding groove is provided on the side of the shaft head flange 1 close to the lubrication-free wear-resistant nylon ring 3, and an annular protrusion is integrally fixed on one side of the lubrication-free wear-resistant nylon ring 3. The annular protrusion is embedded in the embedding groove, and the annular protrusion is adapted to the embedding groove. A first annular groove is provided on the annular protrusion, and a first corrosion-resistant O-ring 2 is clamped in the interior of the first annular groove. The first corrosion-resistant O-ring 2 is clamped between the embedding groove and the first annular groove.

[0021] It should be noted that by providing an embedded groove, it is convenient to position and connect the shaft head flange 1 and the lubrication-free wear-resistant nylon ring 3, and it is convenient to install the first corrosion-resistant O-ring 2 in the embedded groove. The first corrosion-resistant O-ring 2 can further increase the sealing performance.

[0022] It is worth mentioning that the lubrication-free wear-resistant nylon ring 3 is made of lubrication-free wear-resistant nylon. The core advantage of this material is that it can maintain good sliding performance and low wear rate without external lubrication. It is usually composed of a nylon base material and a certain proportion of wear-resistant additives, such as carbon fiber, molybdenum disulfide, graphite, polytetrafluoroethylene powder or silicone powder, etc. The amount of these additives is generally between 3% and 15%. By adding specific wear-resistant agents, the wear of nylon materials is significantly reduced, which is suitable for applications such as mechanical parts that require long-term durability. The solid lubricant in the wear-resistant nylon, such as molybdenum disulfide, enables it to maintain good sliding performance even in the absence of lubricating oil.

[0023] Among them, the diameter of the lubrication-free wear-resistant nylon ring 3 is larger than the diameter of the stainless steel ring 4 , and the diameter of the corrosion-resistant silicone ring 6 is smaller than the diameter of the stainless steel ring 4 .

[0024] The working principle of the above embodiment is as follows: a stainless steel ring 4 is arranged on the hopper flange 7, and a second corrosion-resistant O-ring 5 and a corrosion-resistant silicone ring 6 are arranged between the stainless steel ring 4 and the hopper flange 7. The second corrosion-resistant O-ring 5 and the corrosion-resistant silicone ring 6 ensure the sealing between the stainless steel ring 4 and the hopper flange 7, and are convenient for installation. A lubrication-free wear-resistant nylon ring 3 and a first corrosion-resistant O-ring 2 are arranged between the stainless steel ring 4 and the shaft head flange 1. The stainless steel ring 4 supports the lubrication-free wear-resistant nylon ring 3 and ensures the sealing between the shaft head flange 1 and the stainless steel ring 4. The lubrication-free wear-resistant nylon ring 3 can maintain good sliding performance and low wear rate without external lubrication, reduce the wear of the shaft head flange 1 caused by long-term rotation of the shaft head, and improve the service life. The rotary joint has the advantages of low cost, easy installation, good sealing and long service life.

[0025] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0026] Although the 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 rotary joint with good sealing performance for use on a circulating drum, comprising a shaft head flange (1), characterized in that: A lubrication-free wear-resistant nylon ring (3) is arranged at the bottom of the shaft head flange (1), a stainless steel ring (4) is arranged at the bottom of the lubrication-free wear-resistant nylon ring (3), a hopper flange (7) is arranged inside the side of the stainless steel ring (4) away from the lubrication-free wear-resistant nylon ring (3), a corrosion-resistant silicone ring (6) is sleeved on the outside of the hopper flange (7), and a second corrosion-resistant O-ring (5) is arranged between the corrosion-resistant silicone ring (6) and the stainless steel ring (4).

2. A rotary joint with good sealing performance for a circulating drum according to claim 1, characterized in that: An embedding groove is provided on one side of the shaft head flange (1) close to the lubrication-free wear-resistant nylon ring (3), and an annular protrusion is integrally fixed to one side of the lubrication-free wear-resistant nylon ring (3).

3. A rotary joint with good sealing performance for a circulating drum according to claim 2, characterized in that: The annular protrusion is provided with a first annular groove, a first corrosion-resistant O-ring (2) is clamped inside the first annular groove, and the first corrosion-resistant O-ring (2) is clamped between the embedding groove and the first annular groove.

4. A rotary joint with good sealing performance for a circulating drum according to claim 2, characterized in that: The annular protrusion is embedded in the embedding groove, and the annular protrusion is adapted to the embedding groove.

5. A rotary joint with good sealing performance for a circulating drum according to claim 1, characterized in that: A second annular groove is formed on one side of the stainless steel ring (4) close to the corrosion-resistant silicone ring (6), and the second corrosion-resistant O-ring (5) is clamped in the interior of the second annular groove.

6. A rotary joint with good sealing performance for a circulating drum according to claim 1, characterized in that: The diameter of the lubrication-free wear-resistant nylon ring (3) is larger than the diameter of the stainless steel ring (4), and the diameter of the corrosion-resistant silicone ring (6) is smaller than the diameter of the stainless steel ring (4).

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