Sealing structure of stainless steel reaction kettle

Abstract

The utility model provides a sealing structure of a stainless steel reaction kettle, which comprises a reaction kettle tank cover, a stirring shaft mounted on the inner side of the reaction kettle tank cover and an annular boss arranged on the outer side of the stirring shaft and positioned on the inner side of the reaction kettle tank cover, and a pressure plate and a U-shaped sealing gasket are fixedly sleeved in the top of the reaction kettle tank cover through first bolts. According to the sealing structure of the stainless steel reaction kettle, pressure detection can be conducted on gas filled into the inner side of the U-shaped sealing gasket through the gas pressure sensor, meanwhile, the U-shaped sealing gasket can make contact with the first sealing gasket and the second sealing gasket for sealing after being expanded, and even if the contact faces between the U-shaped sealing gasket and the first sealing gasket and between the U-shaped sealing gasket and the second sealing gasket are abraded, the sealing effect is good; the U-shaped sealing gasket can be tightly attached to the first sealing gasket and the second sealing gasket under the action of gas pressure, and it is ensured that the sealing mechanism can effectively seal the gap between the stirring shaft and the reaction kettle.

Description

Technical Field

[0001] The utility model relates to the technical field of reactors, and particularly discloses a sealing structure of a stainless steel reactor. Background Art

[0002] The existing sealing structure installed on the outside of the stirring shaft inside the stainless steel reactor adopts a mechanical seal. After long-term use, the sealing gasket will wear out, resulting in the sealing gasket being unable to effectively seal the gap between the stirring shaft and the reactor. Utility Model Content

[0003] In view of the above-mentioned defects or deficiencies in the prior art, the present application aims to provide a sealing structure for a stainless steel reactor, comprising a reactor cover, a stirring shaft installed on the inner side of the reactor cover, and an annular boss arranged on the outer side of the stirring shaft and located on the inner side of the reactor cover, the interior of the top of the reactor cover is fixed with a pressure plate and a U-shaped sealing gasket by a first bolt, the inner side of the U-shaped sealing gasket is fitted with a support ring that is movably fitted on the outer side of the first bolt, an air inlet is provided inside the support ring, and an internal thread of the support ring is sleeved with an inflation mechanism that is connected to the air inlet, the outer side of the top end of the stirring shaft is fixed with a sealing sleeve located above the U-shaped sealing gasket by a second bolt, and the inner side of the sealing sleeve is fitted with a sealing ring fitted on the outer side of the stirring shaft.

[0004] Preferably, a first sealing gasket located on the top of the U-shaped sealing gasket is sleeved on the inner side of the bottom of the sealing sleeve.

[0005] Preferably, a second sealing gasket is sleeved on the top of the annular boss and located at the bottom of the U-shaped sealing gasket.

[0006] Preferably, the inflation mechanism includes an adapter threadedly sleeved on the outside of the support ring, the inside of the outside of the adapter is respectively connected to a solenoid valve, an air pressure sensor and a pressure relief valve, and the solenoid valve is connected to a high-pressure pipe.

[0007] Preferably, the inner side of the U-shaped sealing gasket is provided with a first V-shaped protrusion and a second V-shaped protrusion distributed in the radial direction and the axial direction respectively. Beneficial effects

[0008] 1. The sealing structure of the stainless steel reactor can detect the pressure of the gas filled into the inner side of the U-shaped sealing gasket through the air pressure sensor, and at the same time, the U-shaped sealing gasket can be in contact with the first sealing gasket and the second sealing gasket for sealing after expansion. Even if the contact surfaces between the U-shaped sealing gasket and the first sealing gasket and the second sealing gasket are worn, the U-shaped sealing gasket can be tightly fitted with the first sealing gasket and the second sealing gasket under the action of gas pressure, ensuring that the sealing mechanism can effectively seal the gap between the stirring shaft and the reactor.

[0009] 2. The sealing structure of the stainless steel reactor uses a pressure relief valve to ensure that when the gas filled in the U-shaped sealing gasket expands due to high temperature, the stored gas can be automatically exhausted and depressurized, ensuring that there will be no excessive wear between the U-shaped sealing gasket and the first sealing gasket and the second sealing gasket under the action of gas pressure, thereby improving the service life of the sealing structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Other features, objects and advantages of the present application will become more apparent upon reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0011] Figure 1 This is a schematic diagram of the structure of the utility model;

[0012] Figure 2 It is a partial top view of the structure of the utility model;

[0013] Figure 3 This is a schematic diagram of a U-shaped sealing gasket of the present invention;

[0014] Figure 4 It is a schematic diagram of the pressure plate of the utility model.

[0015] In the figure: 1. Reactor tank cover; 2. Stirring shaft; 3. Annular boss; 4. First bolt; 5. Pressure plate; 6. U-shaped sealing gasket; 7. Support ring; 8. Air inlet; 9. Inflating mechanism; 91. Adapter; 92. Solenoid valve; 93. Air pressure sensor; 94. Pressure relief valve; 95. High-pressure pipe; 10. Second bolt; 11. Sealing sleeve; 12. Sealing ring; 13. First sealing gasket; 14. Second sealing gasket; 15. First V-shaped protrusion; 16. Second V-shaped protrusion. DETAILED DESCRIPTION

[0016] The present application will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the relevant utility model and are not intended to limit the utility model. It should also be noted that, for ease of description, only the portions relevant to the utility model are shown in the accompanying drawings.

[0017] The drawings in the embodiments of the present invention: different types of section lines in the drawings are not marked according to national standards, nor do they impose any requirements on the materials of the components. Instead, they are used to distinguish the cross-sectional views of the components in the drawings.

[0018] See also Figure 1-4, a sealing structure of a stainless steel reactor, comprising a reactor cover 1, a stirring shaft 2 installed on the inside of the reactor cover 1, and an annular boss 3 arranged on the outside of the stirring shaft 2 and located on the inside of the reactor cover 1. The interior of the top of the reactor cover 1 is fixed with a pressure plate 5 and a U-shaped sealing gasket 6 by a first bolt 4. The pressure plate 5 can squeeze and fix the U-shaped sealing gasket 6 to ensure that the U-shaped sealing gasket 6 will not be twisted during the rotation of the stirring shaft 2. The inner side of the U-shaped sealing gasket 6 is provided with a support ring 7 that is movably fitted on the outside of the first bolt 4. The U-shaped sealing gasket can be tightened by tightening the first bolt 4. 6 forms a closed cavity, the interior of the support ring 7 is provided with an air inlet 8, and the internal thread of the support ring 7 is sleeved with an inflation mechanism 9 connected to the air inlet 8, and the outer side of the top end of the stirring shaft 2 is fixed with a sealing sleeve 11 located above the U-shaped sealing gasket 6 by a second bolt 10. The sealing sleeve 11 can be limited and fixed by the second bolt 10 while ensuring that the sealing sleeve 11 will not move along the axial direction of the stirring shaft 2. The inner side of the sealing sleeve 11 is sleeved with a sealing ring 12 sleeved on the outside of the stirring shaft 2, and the gap between the stirring shaft 2 and the sealing sleeve 11 can be sealed by the sealing ring 12.

[0019] The inner side of the bottom of the sealing sleeve 11 is sheathed with a first sealing gasket 13 located on the top of the U-shaped sealing gasket 6 . The end surface of the sealing sleeve 11 can be sealed by the cooperation between the U-shaped sealing gasket 6 and the first sealing gasket 13 .

[0020] The top of the annular boss 3 is covered with a second sealing gasket 14 located at the bottom of the U-shaped sealing gasket 6 . The end surface of the annular boss 3 can be sealed by the cooperation between the U-shaped sealing gasket 6 and the second sealing gasket 14 .

[0021] Among them, the inflation mechanism 9 includes an adapter 91 threadedly sleeved on the outside of the support ring 7, and the inside of the outside of the adapter 91 is respectively connected to a solenoid valve 92, an air pressure sensor 93 and a pressure relief valve 94. The air pressure sensor 93 can detect the air pressure inside the U-shaped sealing gasket 6 and drive the solenoid valve 92 at the same time. When the air pressure sensor 93 detects that the air pressure inside the U-shaped sealing gasket 6 is low, it can be inflated in time to ensure that the U-shaped sealing gasket 6 can be tightly closed between the first sealing gasket 13 and the second sealing gasket 14. The U-shaped gasket 6 is tightly fitted, and when the air pressure inside the U-shaped gasket 6 exceeds the set value, the pressure relief valve 94 can automatically open, thereby automatically exhausting the inside of the U-shaped gasket 6. The solenoid valve 92 is connected to the high-pressure pipe 95. By starting the solenoid valve 92, the high-pressure gas inside the high-pressure pipe 95 can be transported to the inside of the U-shaped gasket 6, and then the U-shaped gasket 6 is expanded under the action of the gas pressure. At this time, the double-end face sealing of the stirring shaft 2 is achieved through the cooperation of the U-shaped gasket 6 with the first gasket 13 and the second gasket 14.

[0022] Among them, the inner side of the U-shaped sealing gasket 6 is provided with a first V-shaped protrusion 15 and a second V-shaped protrusion 16 which are distributed radially and axially respectively. The first V-shaped protrusion 15 allows the end face of the U-shaped sealing gasket 6 to move along the axial direction of the stirring shaft 2 when it expands, and the second V-shaped protrusion 16 allows the contact surface of the U-shaped sealing gasket 6 to move along the radial direction of the stirring shaft 2 when it expands, thereby ensuring that the sealing mechanism can effectively seal the stirring shaft 2.

[0023] When the sealing mechanism is working, when the air pressure sensor 93 detects that the air pressure inside the U-shaped sealing gasket 6 is lower than the set value, the solenoid valve 92 is started. At this time, the high-pressure gas inside the high-pressure pipe 95 is inflated to the inner side of the U-shaped sealing gasket 6 through the adapter 91 and the air inlet 8. When the air pressure sensor 93 detects that the air pressure inside the U-shaped sealing gasket 6 reaches the set value, the solenoid valve 92 is controlled to close and cut off the gas supply. When the gas inside the U-shaped sealing gasket 6 expands due to heat, the air pressure inside it is greater than the set value. At this time, the pressure relief valve 94 is opened under the action of the gas pressure, and the gas inside the U-shaped sealing gasket 6 can be discharged to the outside through the pressure relief valve 94, ensuring that there is no excessive extrusion between the U-shaped sealing gasket 6 and the first sealing gasket 13 and the second sealing gasket 14. The content not described in detail in this description belongs to the existing technology well known to professional and technical personnel in this field.

[0024] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0025] The above description is merely a preferred embodiment of the present application and an illustration of the technical principles employed. Those skilled in the art should understand that the scope of the utility model disclosed in this application is not limited to the technical solutions formed by the specific combination of the above-mentioned technical features, but also encompasses other technical solutions formed by any combination of the above-mentioned technical features or their equivalents without departing from the concept of the utility model. For example, a technical solution formed by replacing the above-mentioned features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A sealing structure for a stainless steel reactor, comprising a reactor cover (1), a stirring shaft (2) mounted on the inner side of the reactor cover (1), and an annular boss (3) arranged on the outer side of the stirring shaft (2) and located on the inner side of the reactor cover (1), characterized in that: The top of the reactor tank cover (1) is fixedly sleeved with a pressure plate (5) and a U-shaped sealing gasket (6) by a first bolt (4), the inner side of the U-shaped sealing gasket (6) is sleeved with a support ring (7) that is movably sleeved on the outer side of the first bolt (4), the inner side of the support ring (7) is provided with an air inlet (8), and the inner thread of the support ring (7) is sleeved with an inflation mechanism (9) that is connected to the air inlet (8), the outer side of the top of the stirring shaft (2) is fixedly sleeved with a sealing sleeve (11) located above the U-shaped sealing gasket (6) by a second bolt (10), and the inner side of the sealing sleeve (11) is sleeved with a sealing ring (12) sleeved on the outer side of the stirring shaft (2).

2. The sealing structure of a stainless steel reactor according to claim 1, characterized in that: A first sealing gasket (13) located on the top of the U-shaped sealing gasket (6) is sleeved on the inner side of the bottom of the sealing sleeve (11).

3. The sealing structure of a stainless steel reactor according to claim 1, characterized in that: A second sealing gasket (14) is sleeved on the top of the annular boss (3) and located at the bottom of the U-shaped sealing gasket (6).

4. The sealing structure of a stainless steel reactor according to claim 1, characterized in that: The inflation mechanism (9) comprises an adapter (91) threadedly sleeved on the interior of the outer side of the support ring (7); the interior of the outer side of the adapter (91) is respectively connected to a solenoid valve (92), an air pressure sensor (93) and a pressure relief valve (94); the solenoid valve (92) is connected to a high-pressure pipe (95).

5. The sealing structure of a stainless steel reactor according to claim 1, characterized in that: The inner side of the U-shaped sealing gasket (6) is provided with a first V-shaped protrusion (15) and a second V-shaped protrusion (16) distributed in the radial direction and the axial direction, respectively.

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