Mechanical sealing device for three-in-one kettle

Abstract

The utility model relates to the technical field of three-in-one kettle sealing, and discloses a mechanical sealing device for a three-in-one kettle, which comprises a shaft sleeve, a main shaft is inserted in the shaft sleeve in a sliding manner, sealing components are arranged on the outer wall and the bottom end of the shaft sleeve, each sealing component comprises a mechanical sealing piece mounted on the outer wall of the shaft sleeve, and a linear sealing sleeve is mounted at the bottom end of the shaft sleeve. Three fixing grooves are formed in the linear sealing sleeve, and V-shaped sealing rings are fixed in the fixing grooves. The lubricating oil grooves are formed in the adjacent positions of the three V-shaped sealing rings, oil in the lubricating oil grooves is just sealed by the three V-shaped sealing rings, meanwhile, the oil continuously soaks the main shaft along with linear sliding of the main shaft, the friction force of the outer wall of the main shaft is effectively reduced, the lubricating effect on friction between the main shaft and the V-shaped sealing rings is achieved, and the service life of the main shaft is prolonged. And the sealing effect of the V-shaped sealing ring is prevented from being influenced by heat generation, abrasion or creeping phenomena easily caused by a high friction factor.

Description

Technical Field

[0001] This utility model relates to the field of sealing technology for three-in-one reactors, and in particular to a mechanical sealing device for three-in-one reactors. Background Technology

[0002] Mechanical seals are devices that prevent fluid leakage. They consist of at least one pair of end faces perpendicular to the axis of the rotary agitator, which are kept in contact and slide relative to each other under the action of fluid pressure and the elastic force (or magnetic force) of the compensation mechanism, as well as the cooperation of auxiliary seals. The agitator shaft used in a three-in-one reactor needs to be raised to a certain height during operation before it can be rotated again. Therefore, traditional rotary mechanical seals cannot meet the working requirements of a three-in-one reactor.

[0003] The existing three-in-one mechanical seal device for reactors (announcement number: CN221857532U) has at least the following drawbacks: during use, the device does not provide effective lubrication for the fit between the main shaft and the lip seal, resulting in high friction between the main shaft and the lip seal. When the main shaft moves up and down rapidly, the lip seal will experience heat generation, wear, or creep due to the high coefficient of friction, thus affecting the sealing effect. Therefore, this utility model is proposed. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a three-in-one mechanical seal device for reactors.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] The mechanical seal device for a three-in-one reactor includes a bushing, in which a main shaft is slidably inserted. Sealing components are provided on the outer wall and bottom of the bushing. The sealing components include a mechanical seal installed on the outer wall of the bushing. A linear sealing sleeve is installed at the bottom of the bushing. The linear sealing sleeve has three fixing grooves inside, and a V-shaped sealing ring is fixed inside the fixing grooves. A lubricating oil groove is provided between every two adjacent fixing grooves inside the linear sealing sleeve, and the lubricating oil groove is filled with oil.

[0007] As a further embodiment of this utility model, the inner ring of the V-shaped sealing ring slides and seals with the outer wall of the main shaft, and the outer wall of the straight sealing sleeve and the connection between it and the two lubricating oil grooves are provided with threaded holes. The outer wall of the threaded holes is threaded with sealing bolts, and a sealing ring is fixed at the point where the sealing bolts abut against the outer wall of the straight sealing sleeve.

[0008] As a further embodiment of this utility model, a connecting hole is provided between the two lubricating oil grooves.

[0009] As a further embodiment of this utility model, a keyway is provided on the inner wall of the bushing near the top surface, and a key pin is fixed on the outer wall of the main shaft, with the key pin slidingly disposed within the keyway.

[0010] As a further embodiment of this utility model, a support bearing seat is installed on the outer wall of the bushing and above the mechanical seal.

[0011] As a further embodiment of this utility model, the outer wall of the bushing is provided with several mounting grooves near the bottom surface, and several mounting blocks are fixed on the top surface of the linear sealing sleeve. The mounting blocks are slidably inserted into the interior of the mounting grooves, and a locking bolt is slidably inserted into one side of the mounting block. The locking bolt is threadedly connected to the interior of the mounting groove.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] By setting up mechanical seals, the main shaft drives the bushing to rotate, providing a rotational seal. By setting up linear sealing sleeves and V-shaped sealing rings, the main shaft slides linearly inside the bushing, providing a sliding seal and meeting the sealing requirements of the three-in-one reactor main shaft. Furthermore, by setting up lubricating oil grooves at the adjacent points of the three V-shaped sealing rings, the oil inside the lubricating oil grooves is precisely sealed by the three V-shaped sealing rings. At the same time, the oil continuously permeates the main shaft as it slides linearly, effectively reducing the friction on the outer wall of the main shaft and providing lubrication for the friction between the main shaft and the V-shaped sealing rings. This prevents the V-shaped sealing rings from generating heat, wearing, or creeping due to high friction coefficients, which could affect the sealing effect. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural schematic diagram of the three-in-one mechanical seal device for a reactor proposed in this utility model.

[0015] Figure 2 This is a three-dimensional disassembled structural diagram of the three-in-one mechanical seal device for a reactor proposed in this utility model;

[0016] Figure 3 This is a three-dimensional structural diagram of the key pin of the three-in-one mechanical seal device for a reactor proposed in this utility model.

[0017] Figure 4 This is a three-dimensional cross-sectional view of the linear sealing sleeve of the three-in-one mechanical sealing device for a reactor proposed in this utility model.

[0018] In the diagram: 1. Bushing; 101. Main shaft; 2. Mechanical seal; 201. Linear seal sleeve; 202. Fixing groove; 203. V-shaped seal ring; 204. Lubricating oil groove; 205. Threaded hole; 206. Sealing bolt; 207. Connecting hole; 3. Keyway; 301. Key pin; 4. Support bearing seat; 5. Mounting groove; 501. Mounting block; 502. Locking bolt. Detailed Implementation

[0019] 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.

[0020] 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.

[0021] 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.

[0022] like Figures 1-4 As shown, the mechanical seal device for a three-in-one reactor includes a bushing 1, in which a main shaft 101 is slidably inserted. Sealing components are provided on the outer wall and bottom of the bushing 1. Each sealing component includes a mechanical seal 2 installed on the outer wall of the bushing 1. A linear sealing sleeve 201 is installed at the bottom of the bushing 1. Three fixing grooves 202 are provided inside the linear sealing sleeve 201. V-shaped sealing rings 203 are fixed inside the fixing grooves 202. A lubricating oil groove 204 is provided between every two adjacent fixing grooves 202 inside the linear sealing sleeve 201, and the lubricating oil groove 204 is filled with oil.

[0023] like Figures 2-4As shown, in this embodiment, the inner ring of the V-shaped sealing ring 203 slides and seals against the outer wall of the main shaft 101. A threaded hole 205 is provided on the outer wall of the straight sealing sleeve 201 at the point where it connects to the two lubricating oil grooves 204. A sealing bolt 206 is threaded onto the outer wall of the threaded hole 205. A sealing ring is fixed at the point where the sealing bolt 206 abuts against the outer wall of the straight sealing sleeve 201. A connecting hole 207 is provided between the two lubricating oil grooves 204. Because the inner ring of the V-shaped sealing ring 203 is in a sliding sealing state with the outer wall of the main shaft 101, the sealing bolt 206 is removed from the inside of the threaded hole 205. Then, lubricating oil is injected into the corresponding lubricating oil groove 204 through the threaded hole 205. The lubricating oil fills both lubricating oil grooves 204 through the connecting hole 207. Then... The sealing bolt 206 is reinstalled with the threaded hole 205, and then the main shaft 101 starts. When the main shaft 101 rotates, it drives the bushing 1 to rotate synchronously, so that the mechanical seal 2 starts to work and performs a rotational seal between the bushing 1 and the shell of the three-in-one reactor. When the main shaft 101 slides up and down inside the bushing 1, the bushing 1 does not rotate, the mechanical seal 2 does not work, and the V-shaped sealing ring 203 abuts against the outer wall of the main shaft 101 to achieve a sliding seal on the main shaft 101. Meanwhile, the lubricating oil inside the lubricating oil groove 204 continuously soaks the main shaft 101, effectively reducing the friction of the outer wall of the main shaft 101 and lubricating the friction between the main shaft 101 and the V-shaped sealing ring 203. This prevents the V-shaped sealing ring 203 from easily generating heat, wearing, or creeping due to high friction coefficient, which would affect the sealing effect.

[0024] like Figures 2-4 As shown, in this embodiment, the inner wall of the bushing 1 is provided with a keyway 3 near the top surface, and the outer wall of the main shaft 101 is fixed with a key pin 301. The key pin 301 and the keyway 3 are slidably arranged inside the keyway 3. By setting the keyway 3 and the key pin 301, the main shaft 101 can drive the bushing 1 to rotate synchronously when rotating, and at the same time, the main shaft 101 can slide up and down inside the bushing 1, which meets the working requirements of the main shaft 101 of the three-in-one reactor.

[0025] like Figures 2-4 As shown in this embodiment, a support bearing seat 4 is installed on the outer wall of the bushing 1 and above the mechanical seal 2. By setting the support bearing seat 4, the bushing 1 can be supported and positioned.

[0026] like Figures 2-4 As shown in this embodiment, the outer wall of the bushing 1 is provided with several mounting grooves 5 near the bottom surface, and several mounting blocks 501 are fixed on the top surface of the linear sealing sleeve 201. The mounting blocks 501 are slidably inserted into the interior of the mounting grooves 5, and a locking bolt 502 is slidably inserted into one side of the mounting block 501. The locking bolt 502 is threadedly connected to the interior of the mounting groove 5. The mounting blocks 501 and the mounting groove 5 are detachably installed by the locking bolt 502, which facilitates the disassembly of the linear sealing sleeve 201 for replacement or maintenance.

[0027] From the above description, it can be seen that the above embodiments of this utility model achieve the following technical effects: In use, the mechanical seal 2 pressure ring and stationary ring are installed on the outer wall of the bushing 1 and the three-in-one reactor shell respectively. Then, the support bearing seat 4 is installed on the outer wall of the bushing 1 and the three-in-one reactor shell respectively. Then, the main shaft 101 is inserted into the bushing 1, and the key pin 301 is slidably set in the keyway 3. Then, the linear sealing sleeve 201 is inserted upward from the bottom end of the main shaft 101, and the mounting block 501 is inserted into the mounting groove 5. Then, the locking bolt 502 is threadedly connected to the inside of the mounting groove 5. At this time, the inner ring of the V-shaped sealing ring 203 is in a sliding sealing state with the outer wall of the main shaft 101. Then, the sealing bolt 206 is removed from the inside of the threaded hole 205. Then, lubricating oil is injected into the corresponding lubricating oil groove 204 through the threaded hole 205. The two lubricating oil grooves 204 are filled through the connecting hole 207. Then, the sealing bolt 206 and threaded hole 205 are reinstalled. Subsequently, the main shaft 101 starts to start. When the main shaft 101 rotates, it drives the bushing 1 to rotate synchronously, so that the mechanical seal 2 starts to work and performs a rotational seal between the bushing 1 and the shell of the three-in-one reactor. When the main shaft 101 slides up and down inside the bushing 1, the bushing 1 does not rotate, and the mechanical seal 2 does not work. At this time, the key pin 301 slides inside the keyway 3, and the V-shaped sealing ring 203 abuts against the outer wall of the main shaft 101 to achieve a sliding seal on the main shaft 101. The lubricating oil inside the lubricating oil groove 204 continuously soaks the main shaft 101, effectively reducing the friction of the outer wall of the main shaft 101 and lubricating the friction between the main shaft 101 and the V-shaped sealing ring 203. This prevents the V-shaped sealing ring 203 from generating heat, wearing, or creeping due to high friction coefficient, which would affect the sealing effect.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A mechanical seal device for a three-in-one kettle comprising a shaft sleeve (1), characterized in that, The inside of the shaft sleeve (1) is slidably provided with a main shaft (101), the outer wall and the bottom end of the shaft sleeve (1) are provided with sealing assemblies, the sealing assembly comprises a mechanical seal (2) installed on the outer wall of the shaft sleeve (1), the bottom end of the shaft sleeve (1) is provided with a linear sealing sleeve (201), three fixed grooves (202) are formed in the inside of the linear sealing sleeve (201), a V-shaped sealing ring (203) is fixed in the fixed groove (202), a lubricating oil groove (204) is formed between every two adjacent fixed grooves (202) in the inside of the linear sealing sleeve (201), and the lubricating oil groove (204) is filled with oil.

2. The mechanical seal device for a three-in-one kettle according to claim 1, wherein The inner ring of the V-shaped sealing ring (203) is in sliding sealing with the outer wall of the main shaft (101), the outer wall of the linear sealing sleeve (201) and the communication positions of the two lubricating oil grooves (204) are provided with threaded holes (205), the threaded holes (205) are in threaded connection with sealing bolts (206), and the abutting positions of the sealing bolts (206) and the outer wall of the linear sealing sleeve (201) are fixedly provided with sealing rings.

3. The mechanical seal device for a three-in-one kettle according to claim 2, wherein A communication hole (207) is formed between the two lubricating oil grooves (204).

4. The mechanical seal device for a three-in-one kettle according to claim 3, wherein The inner wall of the shaft sleeve (1) is provided with a key groove (3) near the top surface, the outer wall of the main shaft (101) is fixedly provided with a key pin (301), and the key pin (301) is slidably arranged in the key groove (3).

5. The mechanical seal device for a three-in-one kettle according to claim 4, wherein The outer wall of the shaft sleeve (1) is provided with a supporting bearing seat (4) above the mechanical seal (2).

6. The mechanical seal device for a three-in-one kettle according to claim 5, wherein The outer wall of the shaft sleeve (1) is provided with a plurality of mounting grooves (5) near the bottom surface, the top surface of the linear sealing sleeve (201) is fixedly provided with a plurality of mounting blocks (501), the mounting blocks (501) are slidably arranged in the mounting grooves (5), a locking bolt (502) is slidably arranged on one side of the mounting block (501), and the locking bolt (502) is in threaded connection with the inside of the mounting groove (5).

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