Rotary seal structure

Abstract

This utility model discloses a rotary sealing structure, including an inner tube limiting sealing ring and an outer tube connector. The inner tube limiting sealing ring is arranged around the middle of the inner tube to be connected. The cross-section of the inner tube limiting sealing ring is "T"-shaped. Two limiting grooves are formed between the inner tube limiting sealing ring and the outer wall of the inner tube to be connected. The outer tube connector is located at one end of the outer tube to be connected. The outer tube connector includes a front sealing plate, a rear sealing plate, and a sealing chamber wall plate. The front sealing plate and the rear sealing plate are respectively located in front of and behind the inner tube limiting sealing ring. A through hole adapted to the inner tube to be connected is opened in the middle of the front sealing plate and the rear sealing plate. The front sealing plate and the rear sealing plate are connected by the sealing chamber wall plate. A tetrachlorofluorocarbon sealing ring is provided at the rear end face of the front sealing plate facing the limiting groove and at the front end face of the rear sealing plate facing the limiting groove. This solves the problem of poor sealing performance of existing rotary pipe sealing structures.

Description

Technical Field

[0001] This utility model relates to the field of sealing structures, and in particular to a rotary sealing structure. Background Technology

[0002] Phosphorus mud is a byproduct of yellow phosphorus production or phosphorus-containing industrial wastewater treatment. It typically contains elemental phosphorus, water, solid impurities, and small amounts of organic matter. Direct disposal of it will pollute the environment.

[0003] Rotary pot phosphorus recovery is a resource-based treatment technology for phosphorus-containing waste residue (such as phosphorus mud from yellow phosphorus production). It is mainly used to recover elemental phosphorus (P4). A rotary pot is a rotating container with a heating function. Phosphorus mud is added to the rotary pot and heated to above the melting point of phosphorus (about 44°C) through indirect heating (such as electric heating or gas heating), causing the elemental phosphorus to melt. The centrifugal force generated by the rotation of the rotary pot separates the liquid phosphorus from solid impurities (such as silicates, dust, etc.). The liquid phosphorus, due to its higher density, sinks, while the impurities adhere to the pot wall or are suspended on the surface. The temperature is further raised to the boiling point of phosphorus (280°C), causing the liquid phosphorus to evaporate into a gaseous state. The high-purity phosphorus is then recovered through a condensation system, achieving efficient recovery and resource utilization of phosphorus. It is especially suitable for the yellow phosphorus industry. When using existing rotary pots to treat phosphorus mud, the seal between the steam outlet of the rotary pot and the steam pipe is often poor, resulting in phosphorus vapor leakage, which not only causes waste but also poses a safety hazard. To solve this problem, the existing rotary sealing structure needs to be improved. Utility Model Content

[0004] The purpose of this invention is to provide a rotary sealing structure to solve the problem of poor sealing performance of existing rotary pipe sealing structures.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A rotary sealing structure includes an inner tube limiting sealing ring and an outer tube fitting. The inner tube limiting sealing ring is arranged around the middle of the inner tube to be connected. The cross-section of the inner tube limiting sealing ring is T-shaped. The inner tube limiting sealing ring and the outer wall of the inner tube to be connected form two limiting grooves. The outer tube fitting is disposed at one end of the outer tube to be connected. The outer tube fitting includes a front sealing plate, a rear sealing plate, and a sealing chamber wall plate. The front sealing plate and the rear sealing plate are respectively disposed in front of and behind the inner tube limiting sealing ring. The middle of the front sealing plate and the rear sealing plate has a through hole adapted to the inner tube to be connected. The front sealing plate and the rear sealing plate are connected by the sealing chamber wall plate. A tetrachlorofluorocarbon sealing ring is provided at the rear end face of the front sealing plate facing the limiting groove and at the front end face of the rear sealing plate facing the limiting groove.

[0007] This rotary seal structure has two layers of seal. The first layer is a sealing layer composed of an inner tube limiting sealing ring and a tetrachlorofluorocarbon sealing ring tube. The second layer is a sealing chamber composed of a front sealing plate, a rear sealing plate, and a sealing chamber wall plate. This double-layer seal can effectively improve the sealing performance of the rotary seal.

[0008] As a further preferred embodiment of this utility model, the sealing chamber wall plate and the front sealing plate, and the sealing chamber wall plate and the rear sealing plate are connected by bolts in a detachable manner.

[0009] It facilitates the disassembly of the sealed chamber wall panels for repair and replacement of the internal structure, resulting in lower maintenance costs.

[0010] As a further preferred embodiment of this utility model, the middle of the end face where the front sealing plate connects to the sealing chamber wall plate and the middle of the end face where the rear sealing plate connects to the sealing chamber wall plate are both provided with snap-fit ​​grooves, and a snap-fit ​​strip is provided on the inner surface of the sealing chamber wall plate directly opposite the snap-fit ​​groove, and the snap-fit ​​strip is adapted to the snap-fit ​​groove.

[0011] It can further improve the sealing performance of the sealing chamber composed of the front sealing plate, the sealing chamber wall plate and the rear sealing plate.

[0012] As a further preferred embodiment of this utility model, the bottom surface of the snap-fit ​​groove is covered with a rubber sealing strip.

[0013] As a further preferred embodiment of this utility model, the inner tube limiting sealing ring includes a sealing ring body disposed perpendicular to the outer wall of the inner tube to be connected and a limiting body disposed parallel to the outer wall of the inner tube to be connected, wherein the limiting body and the sealing ring body are detachably connected by bolts.

[0014] This facilitates the replacement of the limiting body with the tetrachlorofluorocarbon sealing ring.

[0015] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0016] 1. This rotary seal structure has two layers of seal. The first layer is a sealing layer composed of an inner tube limiting sealing ring and a tetrachlorofluorocarbon sealing ring tube. The second layer is a sealing chamber composed of a front sealing plate, a rear sealing plate, and a sealing chamber wall plate. This double-layer seal can effectively improve the sealing performance of the rotary seal.

[0017] 2. It is easy to disassemble the sealed chamber wall panels to repair and replace the structure inside the sealed chamber, resulting in lower maintenance costs.

[0018] 3. It can further improve the sealing performance of the sealing chamber composed of the front sealing plate, the sealing chamber wall plate and the rear sealing plate.

[0019] 4. Facilitates the replacement of the limiting body with the tetrachlorofluorocarbon sealing ring tube. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0023] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0024] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0025] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used for the convenience of describing this utility model and simplifying the description, 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. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0026] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Specific Implementation Example 1

[0027] Figure 1 A rotary sealing structure is shown, including an inner tube limiting sealing ring 1 and an outer tube fitting. The inner tube limiting sealing ring 1 is arranged around the middle of the inner tube to be connected. The cross-section of the inner tube limiting sealing ring 1 is "T" shaped. The inner tube limiting sealing ring 1 and the outer wall of the inner tube to be connected form two limiting grooves 2. The outer tube fitting is arranged at one end of the outer tube to be connected. The outer tube fitting includes a front sealing plate 3, a rear sealing plate 4, and a sealing chamber wall plate 5. The front sealing plate 3 and the rear sealing plate 4 are respectively arranged in front of and behind the inner tube limiting sealing ring 1. The middle of the front sealing plate 3 and the rear sealing plate 4 is provided with a through hole adapted to the inner tube to be connected. The front sealing plate 3 and the rear sealing plate 4 are connected by the sealing chamber wall plate 5. The rear end face of the front sealing plate 3 facing the limiting groove 2 and the front end face of the rear sealing plate 4 facing the limiting groove 2 are both provided with tetrachlorofluorocarbon sealing ring tubes 6.

[0028] This rotary seal structure has two layers of seal. The first layer is a sealing layer composed of an inner tube limiting sealing ring and a tetrachlorofluorocarbon sealing ring tube. The second layer is a sealing chamber composed of a front sealing plate, a rear sealing plate, and a sealing chamber wall plate. This double-layer seal can effectively improve the sealing performance of the rotary seal. Specific Implementation Example 2

[0029] This embodiment further describes the sealing chamber wall plate 5 based on specific embodiment 1. The sealing chamber wall plate 5 is detachably connected to the front sealing plate 3 and the rear sealing plate 4 by bolts.

[0030] It facilitates the disassembly of the sealed chamber wall panels for repair and replacement of the internal structure, resulting in lower maintenance costs. Specific Implementation Example 3

[0031] This embodiment further describes the front sealing plate 3 based on specific embodiment 1. The middle part of the end face of the front sealing plate 3 connected to the sealing chamber wall plate 5 and the middle part of the end face of the rear sealing plate 4 connected to the sealing chamber wall plate 5 are provided with snap-fit ​​grooves. The inner surface of the sealing chamber wall plate 5 is provided with snap-fit ​​strip 8 facing the snap-fit ​​groove. The snap-fit ​​strip 8 is adapted to the snap-fit ​​groove.

[0032] It can further improve the sealing performance of the sealing chamber composed of the front sealing plate, the sealing chamber wall plate and the rear sealing plate. Specific Implementation Example 4

[0033] This embodiment further describes the snap-fit ​​groove based on specific embodiment 3, wherein the bottom surface of the snap-fit ​​groove is covered with a rubber sealing strip. Specific Implementation Example 5

[0034] This embodiment further describes the inner tube limiting sealing ring 1 based on specific embodiment 1. The inner tube limiting sealing ring 1 includes a sealing ring body 11 that is perpendicular to the outer wall of the inner tube to be connected and a limiting body 12 that is parallel to the outer wall of the inner tube to be connected. The limiting body 12 and the sealing ring body 11 are detachably connected by bolts.

[0035] This facilitates the replacement of the limiting body with the tetrachlorofluorocarbon sealing ring.

[0036] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A rotary sealing structure, characterized in that: It includes an inner tube limiting sealing ring (1) and an outer tube fitting. The inner tube limiting sealing ring (1) is arranged around the middle of the inner tube to be connected. The cross-section of the inner tube limiting sealing ring (1) is "T" shaped. The inner tube limiting sealing ring (1) and the outer wall of the inner tube to be connected form two limiting grooves (2). The outer tube fitting is set at one end of the outer tube to be connected. The outer tube fitting includes a front sealing plate (3), a rear sealing plate (4), and a sealing chamber wall plate (5). The front sealing plate (3) 3) and the rear sealing plate (4) are respectively set in front of and behind the inner tube limiting sealing ring (1). The middle part of the front sealing plate (3) and the rear sealing plate (4) is provided with a through hole adapted to the inner tube to be connected. The front sealing plate (3) and the rear sealing plate (4) are connected by the sealing chamber wall plate (5). The rear end face of the front sealing plate (3) facing the limiting groove (2) and the front end face of the rear sealing plate (4) facing the limiting groove (2) are both provided with tetrachlorofluorocarbon sealing ring tubes (6).

2. The rotary sealing structure according to claim 1, characterized in that: The sealed chamber wall plate (5) and the front sealing plate (3), and the sealed chamber wall plate (5) and the rear sealing plate (4) are connected by bolts in a detachable manner.

3. The rotary sealing structure according to claim 2, characterized in that: The middle of the end face where the front sealing plate (3) connects to the sealing chamber wall plate (5) and the middle of the end face where the rear sealing plate (4) connects to the sealing chamber wall plate (5) are provided with snap-fit ​​grooves. The inner surface of the sealing chamber wall plate (5) is provided with snap-fit ​​strips (8) facing the snap-fit ​​grooves. The snap-fit ​​strips (8) are adapted to the snap-fit ​​grooves.

4. The rotary sealing structure according to claim 3, characterized in that: A rubber sealing strip is laid on the bottom surface of the snap-fit ​​groove.

5. The rotary sealing structure according to claim 1, characterized in that: The inner tube limiting sealing ring (1) includes a sealing ring body (11) set perpendicular to the outer wall of the inner tube to be connected and a limiting body (12) set parallel to the outer wall of the inner tube to be connected. The limiting body (12) and the sealing ring body (11) are detachably connected by bolts.

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