A sealing structure for rotary equipment

Abstract

This utility model provides a sealing structure for a rotary equipment, belonging to the field of sealing structures for rotary equipment. It includes an overflow cavity, a baffle at the end of the rotary cylinder, the baffle being located inside the overflow cavity, the baffle being fixedly connected to the outer surface of the rotary cylinder, the baffle having an annular structure, and the outer surface of the baffle abutting against the inner wall of the annular structure. This utility model is suitable for use as a seal for rotary equipment. By setting a baffle at the end of the rotary cylinder, it blocks the material falling into the overflow cavity and prevents the material from drifting out of the overflow cavity.

Description

Technical Field

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

[0002] Rotary equipment is widely used in industrial fields, playing a crucial role in industries such as soda ash, compound fertilizer, fluorochemicals, new energy, environmental protection, and sludge drying. This type of equipment uses rotational motion to move, mix, and distribute the treated medium, while simultaneously performing drying, calcination, cooling, or chemical reactions. To ensure normal operation, it also requires devices with dynamic and static connection functions for feeding, discharging, adding refrigerant or heat media, exhausting, and ventilation.

[0003] With the development of various industries, the trend towards larger rotary equipment is becoming increasingly significant. Existing rotary structures use a fixed feed box with an inclined orientation. This fixed feed box has an annular inner wall, and the end of a rotating cylinder is rotatably positioned within this annular inner wall. An overflow cavity is formed between the outer surface of the rotating cylinder and the annular inner wall. Current sealing devices fill this overflow cavity with rubber or other seals. However, under conditions of frequent start-ups and shutdowns, high speeds, and complex operating conditions, the rubber seals are prone to wear and tear, leading to material leakage. This not only increases maintenance frequency and costs but can also cause production interruptions, resulting in greater economic losses. Furthermore, for seals containing flammable, explosive, or toxic media, seal failure can lead to leakage of these hazardous media, causing serious environmental pollution and potentially triggering safety accidents, threatening personnel safety and the sustainable development of enterprises. For example, in chemical production, some chemical raw materials are flammable and explosive; even minor leaks can pose an explosion risk. Leaks containing toxic media can cause long-term harm to the surrounding environment and human health. Utility Model Content

[0004] In view of this, the present invention provides a sealing structure for a rotary equipment, which can block the material falling into the overflow chamber by setting a baffle at the end of the rotary cylinder, thereby preventing the material from drifting out of the overflow chamber.

[0005] To solve the above-mentioned technical problems, this utility model provides a sealing structure for a rotary equipment, including an overflow cavity, which is the gap between the outer surface of the rotary cylinder and the annular inner wall. To block the overflow cavity, a baffle is connected to the outer surface of the end of the rotary cylinder. The baffle is fixedly connected to the rotary cylinder by welding. The baffle has an annular structure, and the outer surface of the baffle abuts against the annular inner wall. The baffle completely fills the overflow cavity, which can effectively block the material and prevent large-scale leakage of the material.

[0006] Furthermore, the baffles are arranged in a spiral blade shape and the arrangement direction of the baffles is opposite to the rotation direction of the rotary cylinder. When the rotary cylinder rotates, the rotary cylinder drives the baffles to rotate. When the baffles rotate, they can push the material in the opposite direction and accumulate the material at the end of the rotary cylinder, preventing the material from moving to the end of the overflow chamber away from the end of the rotary cylinder and causing material leakage.

[0007] One end of the baffle has a lifting plate, which is located on the side of the baffle near the end of the rotary cylinder. The end of the lifting plate away from the axis of the transmission component abuts against the inner wall of the ring. The lifting plate is inclined. When the lifting plate drives the material to rotate, the material enters the rotary cylinder through the inclined lifting plate.

[0008] A transmission component that connects the lifting plate and the baffle, driving the lifting plate to rotate.

[0009] A mounting plate is connected to one end of the baffle near the end of the rotating cylinder. The other end of the mounting plate abuts against the end face of the rotating cylinder. The mounting plate has a circular structure and multiple lifting plates are connected to it. The lifting plates are inclined so that the end of the lifting plate away from the axis of the mounting plate abuts against the inner wall of the ring. The rotating cylinder drives the mounting plate, and the mounting plate drives the lifting plates to rotate. When the lifting plates come into contact with the material, they will cause the material to rotate together. The material will slide into the interior of the rotating cylinder through the inclined lifting plates, thus completing the lifting and unloading of the material pushed back by the baffle.

[0010] A ring is connected to the outer surface of the rotating cylinder. The ring is fixed to the rotating cylinder by welding. A seal is connected to the end of the ring away from the rotating cylinder, so that the seal is connected to the tail of the inner wall of the ring to form a sealing cavity. The sealing cavity is located at the end of the baffle away from the end of the rotating cylinder. When the baffle does not block some materials, the escaping materials enter the sealing cavity, and the sealing cavity provides secondary blocking for the escaping materials.

[0011] The sealing element includes a static friction ring connected to the tail of the annular inner wall. The static friction ring has a circular hole in which a bolt is placed. The bolt passes through the circular hole on the static friction ring and connects to the tail of the annular inner wall. A dynamic friction ring is connected to the end of the static friction ring away from the baffle. The dynamic friction ring has a second circular hole in which a bolt is also placed. The bolt passes through the circular hole on the dynamic friction ring and connects to the annular ring. Both the static and dynamic friction rings are connected by bolts, which facilitates the disassembly of either the dynamic or static friction ring. After disassembly, it is convenient to clean the sealing cavity. The dynamic friction ring is connected to the annular ring, and the end faces of the dynamic and static friction rings abut against each other, which can block the material that escapes into the sealing cavity and prevent the material from drifting into the air.

[0012] The beneficial effects of the above-mentioned technical solution of this utility model are as follows:

[0013] 1. Preventing material leakage: By setting an annular baffle at the end of the rotating cylinder, its outer surface abuts against the inner wall of the annular cavity, completely filling the overflow cavity, effectively preventing material from drifting out of the overflow cavity and preventing large-scale leakage.

[0014] 2. Reduce the risk of material spillage: The baffles, arranged in a spiral blade shape and in the opposite direction of rotation of the rotary cylinder, can push the material in the opposite direction and accumulate it at the end of the rotary cylinder when it rotates, thus preventing the material from moving to the far end of the overflow chamber and causing leakage.

[0015] 3. Automatic lifting and loading / unloading of materials: When the inclined lifting plate at the end of the baffle rotates with the rotary cylinder, it can drive the material to slide into the rotary cylinder through the inclined surface, realizing the automatic lifting and reloading of the reverse-push material and reducing material retention.

[0016] 4. Secondary sealing protection: The ring on the outer surface of the rotating cylinder and the sealing elements (static friction ring and dynamic friction ring) at the tail of the annular inner wall form a sealing cavity, which provides secondary protection against the escape of materials that are not blocked by the baffle, further improving the sealing effect.

[0017] 5. Easy to maintain and clean: The static friction ring and the dynamic friction ring are connected by bolts. The detachable structure makes it easy to regularly disassemble and clean the accumulated material in the sealing cavity, reducing maintenance costs and extending the service life of the equipment.

[0018] 6. Adaptable to complex working conditions: Compared with traditional rubber seals, this structure reduces wear caused by equipment start-up and shutdown, high speed or medium characteristics through mechanical blocking and secondary sealing design, improves sealing reliability, and is suitable for hazardous media environments such as flammable, explosive, and toxic media, reducing safety risks and environmental pollution hazards. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the main structure of a sealing structure for a rotary device according to the present invention;

[0020] Figure 2 This is a cross-sectional view of the baffle of this utility model.

[0021] Explanation of reference numerals in the attached drawings: 1. Overflow chamber; 2. Baffle; 3. Material lifting plate; 4. Mounting plate; 5. Ring; 6. Sealing chamber; 7. Static friction ring; 8. Dynamic friction ring; 9. Bolt. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the following will be described in conjunction with the accompanying drawings of the embodiments of this utility model. Figure 1-2The technical solutions of the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model are within the protection scope of this utility model.

[0023] like Figure 1 , 2 As shown:

[0024] This embodiment provides a sealing structure for a rotary device, including an overflow cavity 1, which is formed by the gap between the outer surface of the rotary cylinder and the annular inner wall. To effectively block the overflow cavity 1, a baffle 2 is connected to the outer surface of the end of the rotary cylinder. The baffle 2 is fixedly connected to the rotary cylinder by welding. The baffle 2 has an annular shape, and its outer surface abuts against the annular inner wall. By completely filling the overflow cavity 1 with the baffle 2, the material can be effectively blocked, preventing large-scale leakage.

[0025] like Figure 2 As shown: Furthermore, the baffles 2 are arranged in a helical blade shape, and the arrangement direction of the baffles 2 is opposite to the rotation direction of the rotating cylinder. When the rotating cylinder rotates, the rotating cylinder will drive the baffles 2 to rotate together. Due to the helical blade structure of the baffles 2 and the opposite rotation direction to the rotating cylinder, the baffles 2 can push the material in the opposite direction during rotation, causing the material to accumulate at the end of the rotating cylinder, thereby preventing the material from moving to the end of the overflow chamber 1 away from the end of the rotating cylinder, and thus preventing material leakage.

[0026] One end of the baffle 2 has a lifting plate 3. The lifting plate 3 is located on the side of the baffle close to the end of the rotary cylinder. The end of the lifting plate 3 away from the axis of the transmission component abuts against the inner wall of the ring. The lifting plate 3 is inclined. When the lifting plate 3 drives the material to rotate, the material enters the rotary cylinder through the inclined lifting plate 3.

[0027] The material lifting plate 3 is connected to the baffle plate 2 by a transmission component that drives the material lifting plate 3 to rotate.

[0028] like Figure 2As shown: A mounting plate 4 is connected to one end of the baffle 2 near the end of the rotating cylinder. The other end of the mounting plate 4 abuts against the end face of the rotating cylinder. The mounting plate 4 has a ring structure 5. Multiple lifting plates 3 are connected to the mounting plate 4. The lifting plates 3 are inclined, so that the end of the lifting plate 3 away from the axis of the mounting plate 4 abuts against the inner wall of the ring. When the rotating cylinder rotates, the rotating cylinder will drive the mounting plate 4 to rotate, and the mounting plate 4 will in turn drive the lifting plates 3 to rotate. When the lifting plates 3 come into contact with the material, they will drive the material to rotate together. Since the lifting plates 3 are inclined, the material will slide into the interior of the rotating cylinder through the inclined lifting plates 3, thereby completing the lifting and unloading operation of the material pushed back by the baffle 2.

[0029] like Figure 2 As shown: A ring 5 is connected to the outer surface of the rotating cylinder. The ring 5 is fixed to the rotating cylinder by welding and is located on the side of the rotating cylinder away from the fixed feed box. A seal is connected to the end of the ring 5 away from the rotating cylinder. The seal is connected to the tail of the annular inner wall to form a sealing cavity 6. This sealing cavity 6 is located at the end of the baffle 2 away from the end of the rotating cylinder. When the baffle 2 fails to block some material, the spilled material will enter the sealing cavity 6, which provides secondary blocking for the spilled material.

[0030] like Figure 2 As shown: The sealing element includes a static friction ring 7 connected to the tail of the annular inner wall. The static friction ring 7 has a circular hole, into which a bolt 9 is placed. The bolt 9 passes through the circular hole on the static friction ring 7 and connects to the tail of the annular inner wall. A dynamic friction ring 8 is connected to the end of the static friction ring 7 away from the baffle 2. The dynamic friction ring 8 has a second circular hole, into which a bolt 9 is also placed. The bolt 9 passes through the second circular hole on the dynamic friction ring 8 and connects to the annular ring 5. Both the static friction ring 7 and the dynamic friction ring 8 are connected by bolts 9. This connection method facilitates the disassembly of either the dynamic friction ring 8 or the static friction ring 7, making it easy to clean the sealing cavity 6 after disassembly. The dynamic friction ring 8 is connected to the annular ring 5, and the end faces of the dynamic friction ring 8 and the static friction ring 7 abut against each other, which can block material escaping into the sealing cavity 6 and prevent the escaped material from drifting into the air.

[0031] Working principle: The annular baffle 2 at the end of the rotary cylinder is located inside the overflow chamber 1 and its outer surface abuts against the inner wall of the annulus. It can prevent the material falling into the overflow chamber 1 from drifting out of the chamber, thus achieving initial blocking of the material. The annulus 5 on the outer surface of the rotary cylinder is located on the side away from the fixed feed box. The seal at the end of the annulus 5 away from the rotary cylinder is connected to the tail of the inner wall of the annulus to form a sealing chamber 6. When the material that is not blocked by the baffle 2 escapes into the sealing chamber 6, the sealing chamber 6 can block the material a second time. The static friction ring 7 or the dynamic friction ring 8 is a detachable structure, which is convenient for cleaning the sealing chamber 6 after disassembly.

[0032] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 according to the specific circumstances.

[0033] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A sealing arrangement for a rotary machine comprising an overflow chamber (1), characterized in that: The end of the rotary cylinder has a baffle (2), which is located in the overflow cavity (1). The baffle (2) is fixedly connected to the outer surface of the rotary cylinder. The baffle (2) has an annular structure, and the outer surface of the baffle (2) abuts against the inner wall of the annular structure.

2. The rotary equipment sealing structure as described in claim 1, characterized in that: The baffles (2) are arranged in a spiral blade shape.

3. The rotary equipment sealing structure as described in claim 2, characterized in that: The baffle (2) has a lifting plate (3) at one end. The lifting plate (3) is connected to the baffle (2) by a transmission component that drives the lifting plate (3) to rotate. The lifting plate (3) is located on the side of the baffle (2) near the end of the rotary cylinder. The end of the lifting plate (3) away from the axis of the transmission component abuts against the inner wall of the ring. The lifting plate (3) is inclined. When the lifting plate (3) drives the material to rotate, the material enters the rotary cylinder through the inclined lifting plate (3).

4. The rotary equipment sealing structure as described in claim 3, characterized in that: The transmission component is a mounting plate (4), which is fixedly installed with the baffle (2). The lifting plate (3) is arranged in a ring on the mounting plate (4), and the lifting plate (3) is located on the mounting plate (4) on the side closer to the baffle (2).

5. The rotary equipment sealing structure as described in claim 1, characterized in that: The outer surface of the rotary cylinder is provided with a ring (5), the ring (5) is located on the side away from the fixed feed box, and the end of the ring (5) away from the rotary cylinder has a sealing element, which is connected to the tail of the inner wall of the ring to form a sealing cavity (6).

6. The rotary equipment sealing structure as described in claim 5, characterized in that: The sealing element includes a static friction ring (7) connected to the tail of the annular inner wall; The static friction ring (7) has a dynamic friction ring (8) at the end away from the baffle (2). The dynamic friction ring (8) is fixedly disposed with the ring (5). The static friction ring (7) and the end face of the dynamic friction ring (8) abut against each other. Both the static friction ring (7) and the dynamic friction ring (8) are annular structures.

7. The rotary equipment sealing structure as described in claim 6, characterized in that: The static friction ring (7) or the dynamic friction ring (8) is a detachable structure.

8. The rotary equipment sealing structure as described in claim 7, characterized in that: The static friction ring (7) is connected to the fixed feed box by bolts (9), or the dynamic friction ring (8) is connected to the baffle (2) by bolts (9).

Images