Stirring mechanical sealing assembly for kettle

Abstract

The utility model relates to the field of mechanical equipment, and provides a stirring mechanical sealing assembly for a kettle, which comprises an inner end cover and a sealing mechanism. The tensioning oil seal and the tensioning spring are arranged, both the tensioning spring and the tensioning oil seal apply pretightening force to the elastic oil seal, the outer end cover pushes the tensioning oil seal inwards along the dustproof lip edge through the tensioning oil seal, so that the pretightening force is increased to the elastic oil seal, the oil-resistant lip edge of the elastic oil seal is tightly attached to the rotating shaft part again, and the rotating shaft part is prevented from rotating. The problem of leakage of lubricating grease is solved, and the problem of leakage of the lubricating grease is avoided by arranging the oil-resistant lip which is tightly attached to the rotating shaft part; by arranging the outer end cover, the connecting bolt, the spring washer, the positioning groove and the air gap, after oil leakage is caused by abrasion of an oil-resistant lip edge or a rotating shaft of the elastic oil seal through long-time operation, the inner end cover can be properly screwed inwards through the connecting bolt to reduce the air gap, and the air gap can also be properly increased or reduced according to the operation condition of equipment.

Description

Technical Field

[0001] This utility model relates to the field of mechanical equipment, specifically to a mechanical sealing assembly for a stirring vessel. Background Technology

[0002] The emergence of mechanical seal assemblies for reactors was to address the problems exposed by traditional packing or ordinary skeleton oil seals in rotating parts such as reducers and bearing housings during long-term operation. These mechanical seal assemblies offer an effective solution due to their sealing performance and durability. They are precision-designed to withstand high temperatures, high pressures, and corrosive environments, reducing wear and extending service life. Furthermore, the maintenance and replacement process of these mechanical seal assemblies is relatively simple, saving time and labor even in areas where disassembly is difficult. Therefore, mechanical seal assemblies for reactors have become a key choice for ensuring stable equipment operation, reducing maintenance costs, and improving production efficiency.

[0003] Currently, the rotating parts of existing mechanical equipment, such as speed reducers and bearing housings, are sealed with oil seals made of packing or ordinary skeletons. After long-term operation, the friction between the rotating shaft and the packing or ordinary skeleton seal causes wear on the sealing lip, leading to leakage of lubricating grease inside the housing. If the lubricating grease level is low and the leakage is not detected by on-site personnel in time, it may cause equipment accidents due to poor lubrication. Even if the leakage is detected by on-site personnel in time, the only option to deal with the leakage is to replace the packing or ordinary skeleton oil seal. For parts that are difficult to disassemble, the replacement process is time-consuming and laborious. Utility Model Content

[0004] The purpose of this utility model is to provide a mechanical sealing assembly for a stirring vessel to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a mechanical sealing assembly for a reactor stirring device, comprising an inner end cover and a sealing mechanism. A fixing bolt is provided on the outer side of the inner end cover, a sealing mechanism is provided above the inner end cover, an outer end cover is provided above the inner end cover, a step is provided on the inner side of the inner end cover, an elastic oil seal is provided above the step, an oil-resistant lip is provided on the inner side of the elastic oil seal, a tensioning oil seal is provided above the elastic oil seal, and a dustproof lip is provided on the inner side of the tensioning oil seal.

[0006] Preferably, the outer end cover is threaded with a connecting bolt, the connecting bolt is threaded to the inner end cover, a spring washer is sleeved on the outer side of the connecting bolt, a positioning groove is provided below the spring washer, the positioning groove is opened in the inner end cover, and an air gap is provided between the inner end cover and the outer end cover.

[0007] Preferably, a limiting block is sleeved on the inner side of the step, the limiting block is tightly fitted to the step, and the limiting block is fixedly connected to the elastic oil seal.

[0008] Preferably, the tension oil seal and the elastic oil seal are sleeved together, the tension oil seal and the elastic oil seal are sized to match, and the tension oil seal fits tightly against the inner end cap.

[0009] Preferably, the oil-resistant lip is fixedly connected to the elastic oil seal, and the oil-resistant lip is serrated.

[0010] Preferably, the dustproof lip and the tensioning oil seal are fixedly connected, and the tensioning oil seal and the oil-resistant lip are tightly fitted together.

[0011] Preferably, the inner sides of the elastic oil seal and the tensioning oil seal are fixedly connected with hooks, and the inner sides of the hooks are connected with tensioning springs via hanging rings. The tensioning springs are welded to the hanging rings, and multiple sets of tensioning springs are provided.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This invention solves the problem of lubricating grease leakage by setting up a tensioning oil seal and a tensioning spring. Both the tensioning spring and the tensioning oil seal provide a pre-tightening force to the elastic oil seal. By setting up the tensioning oil seal, the outer end cover pushes the tensioning oil seal inward along the dustproof lip, thereby increasing the pre-tightening force to the elastic oil seal. This makes the oil-resistant lip of the elastic oil seal fit tightly against the rotating shaft again, thus solving the problem of lubricating grease leakage. By setting up the oil-resistant lip, the oil-resistant lip fits tightly against the rotating shaft, thus preventing the problem of lubricating grease leakage.

[0014] This utility model, by setting an outer end cover, connecting bolts, spring washers, positioning grooves, and air gaps, allows for oil leakage caused by wear on the oil-resistant lip or rotating shaft of the elastic oil seal after long-term operation. The inner end cover can be tightened inwards by connecting bolts to reduce the air gap. The air gap can also be appropriately increased or decreased according to the operating conditions of the equipment. The spring washers can absorb axial displacement caused by temperature changes, equipment vibrations, and other factors, maintaining the stability of the seal. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the appearance structure of this utility model.

[0016] Figure 2 This is a schematic diagram of the exploded structure of this utility model.

[0017] Figure 3 This is a cross-sectional structural diagram of the present invention.

[0018] Figure 4 For the present utility model Figure 3 Enlarged view at point A.

[0019] Figure 5 This is a schematic diagram of the tension spring and the hanging ring of this utility model.

[0020] In the diagram: 1. Inner end cap; 2. Fixing bolt; 3. Sealing mechanism; 301. Outer end cap; 302. Connecting bolt; 303. Spring washer; 304. Positioning groove; 305. Step; 306. Elastic oil seal; 307. Limiting block; 308. Oil-resistant lip; 309. Tensioning oil seal; 310. Dustproof lip; 311. Hook; 312. Tensioning spring; 313. Hanging ring; 314. Air gap. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0022] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only 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" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within 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.

[0024] 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.

[0025] Please see Figure 1-5An embodiment of this utility model provides a mechanical sealing assembly for a stirring vessel, comprising an inner end cover 1 and a sealing mechanism 3. A fixing bolt 2 is provided on the outer side of the inner end cover 1, and the sealing mechanism 3 is provided above the inner end cover 1. An outer end cover 301 is provided above the inner end cover 1, and a step 305 is provided on the inner side of the inner end cover 1. An elastic oil seal 306 is provided above the step 305, an oil-resistant lip 308 is provided on the inner side of the elastic oil seal 306, a tensioning oil seal 309 is provided above the elastic oil seal 306, and a dustproof lip 310 is provided on the inner side of the tensioning oil seal 309.

[0026] Specifically, the outer end cover 301 is threaded with a connecting bolt 302, which is threaded to the inner end cover 1. A spring washer 303 is sleeved on the outer side of the connecting bolt 302. A positioning groove 304 is provided below the spring washer 303. The positioning groove 304 is opened in the inner end cover 1. An air gap 314 is provided between the inner end cover 1 and the outer end cover 301. After long-term operation, if the oil-resistant lip 308 of the elastic oil seal 306 or the rotating shaft wears and causes oil leakage, the inner end cover 1 can be tightened inward by the connecting bolt 302 to reduce the air gap 314. The air gap 314 can also be appropriately increased or decreased according to the operating conditions of the equipment. The spring washer 303 can absorb the axial displacement caused by temperature changes, equipment vibration and other factors, and maintain the stability of the seal.

[0027] Specifically, a limiting block 307 is sleeved on the inner side of the step 305. The limiting block 307 fits tightly with the step 305. The limiting block 307 is fixedly connected to the elastic oil seal 306. The limiting block 307 and the step 305 cooperate to fix the elastic oil seal 306 inside the inner end cover 1, improve stability, and prevent the elastic oil seal 306 from falling off.

[0028] Specifically, the tensioning oil seal 309 and the elastic oil seal 306 are connected in a sleeve. The tensioning oil seal 309 and the elastic oil seal 306 are sized to match. The tensioning oil seal 309 fits tightly with the inner end cap 1. The tensioning oil seal 309 will give the elastic oil seal 306 a pre-tightening force, which can help compensate for wear during use and extend the service life of the oil seal.

[0029] Specifically, the oil-resistant lip 308 and the elastic oil seal 306 are fixedly connected. The oil-resistant lip 308 is serrated and fits tightly with the rotating shaft to avoid leakage of lubricating grease.

[0030] Specifically, the dustproof lip 310 and the tensioning oil seal 309 are fixedly connected. The tensioning oil seal 309 and the oil-resistant lip 308 are tightly fitted together. The outer end cover 301 pushes the tensioning oil seal 309 inward along the dustproof lip 310, thereby increasing the preload on the elastic oil seal 306, so that the oil-resistant lip 308 of the elastic oil seal 306 is tightly fitted with the rotating shaft again, solving the problem of lubricating grease leakage.

[0031] Specifically, hooks 311 are fixedly connected to the inner sides of the elastic oil seal 306 and the tension oil seal 309. A tension spring 312 is connected to the inner side of the hook 311 through a hanging ring 313. The tension spring 312 and the hanging ring 313 are welded together. Multiple sets of tension springs 312 are provided. The tension springs 312 will give the elastic oil seal 306 an additional preload to improve the sealing performance.

[0032] Working principle: First, the elastic oil seal 306 is installed onto the inner end cover 1. The limiting block 307 and the step 305 cooperate to fix the elastic oil seal 306 inside the inner end cover 1, improving stability and preventing the elastic oil seal 306 from falling off. The oil-resistant lip 308 on the inner side of the elastic oil seal 306 is tightly fitted to the rotating shaft under the action of the tension spring 312. Next, the tension oil seal 309 is installed inside the dustproof lip 310 of the elastic oil seal 306, with the dustproof lip 310 facing outwards. Then, the outer end cover 301 is installed, ensuring that the boss of the outer end cover 301 presses against the outer ring of the tension oil seal 309. The outer end cover 301 is secured by fixing bolts. 2. Installed onto the inner end cover 1, under normal circumstances, the elastic oil seal 306 plays the role of sealing the rotating shaft through the oil-resistant lip 308. The tension spring 312 and the tension oil seal 309 will give the elastic oil seal 306 a pre-tightening force. After long-term operation, if the oil-resistant lip 308 of the elastic oil seal 306 or the rotating shaft wears and causes oil leakage, the inner end cover 1 can be tightened inward with the connecting bolt 302 to reduce the air gap 314. The air gap 314 can also be appropriately increased or decreased according to the operating conditions of the equipment. The spring washer 303 can absorb the axial displacement caused by temperature changes, equipment vibration and other factors, and maintain the stability of the seal.

[0033] The above description is merely an embodiment of this utility model, and common knowledge regarding specific structures and characteristics is not described in detail here. It will be apparent to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this utility model is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A mechanical sealing assembly for a stirring vessel, comprising an inner end cap (1) and a sealing mechanism (3), characterized in that: A fixing bolt (2) is provided on the outer side of the inner end cover (1). A sealing mechanism (3) is provided on the upper part of the inner end cover (1). An outer end cover (301) is provided on the upper part of the inner end cover (1). A step (305) is provided on the inner side of the inner end cover (1). An elastic oil seal (306) is provided on the upper part of the step (305). An oil-resistant lip (308) is provided on the inner side of the elastic oil seal (306). A tensioning oil seal (309) is provided on the upper part of the elastic oil seal (306). A dustproof lip (310) is provided on the inner side of the tensioning oil seal (309).

2. The mechanical seal assembly for a reactor stirring device according to claim 1, characterized in that: The outer end cap (301) is threaded with a connecting bolt (302), which is threaded to the inner end cap (1). A spring washer (303) is sleeved on the outer side of the connecting bolt (302). A positioning groove (304) is provided below the spring washer (303). The positioning groove (304) is opened in the inner end cap (1). An air gap (314) is provided between the inner end cap (1) and the outer end cap (301).

3. The mechanical seal assembly for a reactor stirring device according to claim 1, characterized in that: A limiting block (307) is sleeved on the inner side of the step (305), the limiting block (307) is tightly fitted to the step (305), and the limiting block (307) is fixedly connected to the elastic oil seal (306).

4. The mechanical seal assembly for a reactor stirring device according to claim 1, characterized in that: The tensioning oil seal (309) and the elastic oil seal (306) are sleeved together. The tensioning oil seal (309) and the elastic oil seal (306) are sized to match. The tensioning oil seal (309) is tightly fitted to the inner end cap (1).

5. The mechanical seal assembly for a reactor stirring device according to claim 1, characterized in that: The oil-resistant lip (308) and the elastic oil seal (306) are fixedly connected, and the oil-resistant lip (308) is serrated.

6. The mechanical seal assembly for a reactor stirring device according to claim 1, characterized in that: The dustproof lip (310) and the tensioning oil seal (309) are fixedly connected, and the tensioning oil seal (309) and the oil-resistant lip (308) are tightly fitted together.

7. The mechanical seal assembly for a reactor stirring device according to claim 1, characterized in that: The inner sides of the elastic oil seal (306) and the tension oil seal (309) are fixedly connected with hooks (311), and the inner side of the hooks (311) is connected with tension springs (312) through hanging rings (313). The tension springs (312) and hanging rings (313) are welded together, and multiple sets of tension springs (312) are provided.

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