Integrated mechanical sealing equipment for rotating shaft of chemical reaction kettle

Abstract

The utility model discloses integrated mechanical sealing equipment for a rotating shaft of a chemical reaction kettle, which comprises a movable sealing element and an inner compression air bag ring, one end of the movable sealing element is connected with a spring body and a spring seat, and the inner compression air bag ring is adhered to the inner side wall of the movable sealing element. According to the utility model, the internal compression airbag ring and the like are arranged, so that the structure of the device is optimized, and a user can open the threaded sealing plug on the inflation reserved pipe; gas is inflated into the inner compression air bag ring through the gas pump, the inner compression air bag ring is tightly attached to the reaction kettle rotating shaft sleeved with the movable sealing piece, reinforced sealing between the movable sealing piece and the reaction kettle rotating shaft is achieved, when dismounting and overhauling are needed in the follow-up process, only the threaded sealing plug on the reserved exhaust pipe needs to be opened, gas can be exhausted, and operation is convenient. The one-way valves correspondingly arranged on the exhaust reserved pipe and the inflation reserved pipe ensure that gas in the exhaust reserved pipe and the inflation reserved pipe can only flow in one direction, and inflation and deflation operation is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical reactor shaft sealing treatment, in particular to a chemical reactor shaft integrated mechanical sealing device. Background Art

[0002] Chemical reactors are widely used in chemical, pharmaceutical, food, industrial and energy industries because they can withstand high pressure, high temperature and high-speed stirring. They are used for various chemical reactions, synthesis, blending, mixing, drying and crystallization processes, and can achieve continuous feeding, continuous discharge and effective mixing of reactants. The shaft is the most important functional component of the chemical reactor. In actual operation, in order to ensure the sealing effect of the chemical reactor, sealing equipment is often required on the shaft. However, there are still some defects in its actual operation.

[0003] The chemical reactor shaft sealing equipment often has a simple structure and can only be sealed by installing sealing materials between the shaft and the through-hole of the reactor body, or by a simple mechanical seal for dynamic sealing protection. The former will cause serious friction damage to the sealing structure, and the latter will have the risk of leakage. Based on this, we propose a new type of chemical reactor shaft integrated mechanical sealing equipment, which can integrate dynamic mechanical seals and multi-stage static sealing structures into one, achieve efficient front sealing protection effect, and facilitate promotion. Utility Model Content

[0004] The utility model aims to provide a chemical reactor shaft integrated mechanical sealing device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an integrated mechanical sealing device for a chemical reactor shaft, comprising a dynamic seal and an inner compression airbag ring, one end of the dynamic seal is connected with a spring body and a spring seat, the inner compression airbag ring is bonded to the inner side wall of the dynamic seal, a first silicone rubber seal is fixed to the inner wall of the dynamic seal on one side of the inner compression airbag ring, the top and bottom ends of the dynamic seal are respectively provided with an exhaust reserve pipe and an inflation reserve pipe connected to the inner compression airbag ring, and threaded sealing plugs and one-way valves are installed on the exhaust reserve pipe and the inflation reserve pipe, one end of the dynamic seal away from the spring body is connected with a static seal, one end of the static seal away from the dynamic seal is fixed with an installation mosaic block, both ends of the installation mosaic block are provided with a third silicone rubber seal, one end of the dynamic seal is provided with a second silicone rubber seal matching the static seal, and balls are evenly and movably connected to the second silicone rubber seal.

[0006] Preferably, the horizontal center line of the dynamic seal and the horizontal center line of the static seal are on the same straight line, and threaded fixing holes arranged at equal intervals are evenly arranged on the edge of the static seal, so that it is easy to fix the static seal on the corresponding chemical reactor by screws.

[0007] Preferably, the dynamic seal and the spring seat are both provided with a shaft fitting opening inside, so that it is convenient to fit the dynamic seal and the spring seat onto the corresponding reactor shaft structure.

[0008] Preferably, the threaded sealing plug is threadedly connected to one end of the exhaust reserved pipe and the inflation reserved pipe respectively.

[0009] Preferably, an air cavity is provided inside the inner compression airbag ring.

[0010] Preferably, the outer side wall of the inner compression airbag ring is provided with a water-absorbing and swelling resin layer, so as to optimize the sealing effect of the outer side wall of the inner compression airbag ring.

[0011] Preferably, a polyurethane base layer is provided on the inner compression airbag ring inside the water-swellable resin layer.

[0012] The beneficial technical effects of the technical scheme are as follows: the chemical reactor shaft integrated mechanical sealing device optimizes its own structure by installing an internal compression airbag ring, etc. The user can open the threaded sealing plug on the inflation reserved tube, and use an air pump to compress the airbag ring inward to fill the gas, so that it is close to the reactor shaft inserted into the dynamic seal, and realize the reinforced seal between the dynamic seal and the reactor shaft. When it needs to be disassembled and repaired later, it only needs to open the threaded sealing plug on the exhaust reserved tube to deflate, and the corresponding one-way valves on the exhaust reserved tube and the inflation reserved tube ensure that the gas inside the exhaust reserved tube and the inflation reserved tube can only flow in one direction, which is convenient for inflation and deflation operations.

[0013] The technical solution is provided with a second silicone rubber sealing ring, etc., so that when the device is used, a second silicone rubber sealing ring embedded in a static sealing member is provided on the dynamic sealing member, and a ball bearing is evenly and movably connected to the tail of the second silicone rubber sealing ring. The ball bearing can convert the sliding friction of the dynamic seal and the static seal during relative movement into rolling friction, thereby reducing the influence of friction resistance and helping to extend the service life of the device.

[0014] The technical solution is provided with static seals, etc., so that when the device is actually operated, under the action of the fluid pressure inside the reactor and the elastic force of the compensation mechanism composed of the spring body and the spring seat, the rotating shaft drives the dynamic seal to rotate, and the dynamic seal and the static seal can be kept in contact with each other, and the double-layer auxiliary sealing protection of the first silicone rubber sealing ring and the rotating shaft and the third silicone rubber sealing ring and the reactor can be used to prevent leakage. This enables the device to achieve a mechanical sealing protection effect by integrating the dynamic seal, the static seal, the first silicone rubber sealing ring and the third silicone rubber sealing ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a front view structural schematic diagram of the utility model.

[0016] Figure 2 It is a schematic diagram of a partial cross-sectional structure of a dynamic seal of the utility model from a side view.

[0017] Figure 3 It is a rear view structural schematic diagram of the dynamic seal of the utility model.

[0018] Figure 4 It is a rear view structural schematic diagram of the static seal of the utility model.

[0019] Figure 5 It is a schematic diagram of the cross-sectional structure of the side wall of the inner compression airbag ring of the utility model.

[0020] In the figure: 1. dynamic seal; 2. static seal; 3. exhaust reserve pipe; 4. threaded sealing plug; 5. inflation reserve pipe; 6. one-way valve; 7. inner compression airbag ring; 8. first silicone rubber seal ring; 9. shaft sleeve opening; 10. ball; 11. second silicone rubber seal ring; 12. spring body; 13. spring seat; 14. threaded fixing hole; 15. third silicone rubber seal ring; 16. mounting chimeric block; 17. water-absorbing and swelling resin layer; 18. polyurethane base layer; 19. air cavity. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-5The utility model provides an embodiment: an integrated mechanical sealing device for a chemical reactor shaft, comprising a dynamic seal 1 and an inner compression airbag ring 7, one end of the dynamic seal 1 is connected to a spring body 12 and a spring seat 13, the inner compression airbag ring 7 is bonded to the inner side wall of the dynamic seal 1, and a first silicone rubber sealing ring 8 is fixed to the inner wall of the dynamic seal 1 on one side of the inner compression airbag ring 7.

[0023] The top and bottom ends of the dynamic seal 1 are respectively provided with an exhaust reserve pipe 3 and an inflation reserve pipe 5 which are connected with the internal compression airbag ring 7, and the exhaust reserve pipe 3 and the inflation reserve pipe 5 are both installed with a threaded sealing plug 4 and a one-way valve 6; the user can open the threaded sealing plug 4 on the inflation reserve pipe 5, and use an air pump to compress the airbag ring 7 inwardly to fill the inside of the dynamic seal 1 with gas, so that it is close to the reactor shaft inserted into the dynamic seal 1, and realizes a reinforced seal between the dynamic seal 1 and the reactor shaft. When it needs to be disassembled and replaced for maintenance later, it is only necessary to open the threaded sealing plug 4 on the exhaust reserve pipe 3 to deflate, and the one-way valve 6 correspondingly arranged on the exhaust reserve pipe 3 and the inflation reserve pipe 5 ensures that the gas inside the exhaust reserve pipe 3 and the inflation reserve pipe 5 can only flow in one direction, which is convenient for charging and discharging operations.

[0024] The end of the dynamic seal 1 away from the spring body 12 is connected to the static seal 2, and the end of the static seal 2 away from the dynamic seal 1 is fixed with a mounting chimeric block 16, and both ends of the mounting chimeric block 16 are provided with a third silicone rubber sealing ring 15; one end of the dynamic seal 1 is provided with a second silicone rubber sealing ring 11 matching the static seal 2, and the second silicone rubber sealing ring 11 is evenly and movably connected with balls 10.

[0025] By arranging a second silicone rubber sealing ring 11 embedded in the static sealing ring 2 on the dynamic sealing ring 1, and evenly and movably connecting the tail of the second silicone rubber sealing ring 11 with a ball 10, the ball 10 can be used to convert the sliding friction of the dynamic seal 1 and the static seal 2 during relative movement into rolling friction, thereby reducing the influence of friction resistance and being beneficial to extending the service life of the device; the horizontal center line of the dynamic seal 1 and the horizontal center line of the static seal 2 are on the same straight line.

[0026] The edge of the static seal 2 is evenly provided with threaded fixing holes 14 arranged at equal intervals, so that it is convenient to fix the static seal 2 on the corresponding chemical reactor by screws; the dynamic seal 1 and the spring seat 13 are both provided with shaft sleeve ports 9 inside, so that it is convenient to sleeve the dynamic seal 1 and the spring seat 13 on the corresponding reactor shaft structure; the threaded sealing plug 4 is respectively threadedly connected to one end of the exhaust reserve pipe 3 and the inflation reserve pipe 5; the interior of the inner compression airbag ring 7 is provided with an air cavity 19; the outer side wall of the inner compression airbag ring 7 is provided with a water-absorbing and expanding resin layer 17, so that the sealing effect of the outer wall of the inner compression airbag ring 7 is optimized; a polyurethane base layer 18 is provided on the inner compression airbag ring 7 inside the water-absorbing and expanding resin layer 17.

[0027] The working principle of the device is as follows: the user can use the threaded fixing hole 14 on the static seal 2 to fix the static seal 2 on the corresponding chemical reactor through screws, and the user can use the shaft sleeve port 9 to insert the dynamic seal 1, the spring body 12 and the spring seat 13 onto the corresponding reactor shaft. When actually used, under the action of the fluid pressure inside the reactor and the elastic force of the compensation mechanism composed of the spring body 12 and the spring seat 13, when the shaft drives the dynamic seal 1 to rotate, the dynamic seal 1 and the static seal 2 can be kept in contact and the double-layer auxiliary sealing protection of the first silicone rubber sealing ring 8 and the shaft and the third silicone rubber sealing ring 15 and the reactor can be used to prevent leakage. This enables the device to achieve a mechanical sealing protection effect by integrating the dynamic seal 1, the static seal 2, the first silicone rubber sealing ring 8 and the third silicone rubber sealing ring 15.

[0028] The user can open the threaded sealing plug 4 on the inflation reserve tube 5, and use the air pump to press the airbag ring 7 inward to fill the gas, so that it is close to the reactor shaft inserted into the dynamic seal 1, and realize the reinforced seal between the dynamic seal 1 and the reactor shaft. When it needs to be disassembled and repaired later, it is only necessary to open the threaded sealing plug 4 on the exhaust reserve tube 3 to deflate, and the one-way valve 6 correspondingly arranged on the exhaust reserve tube 3 and the inflation reserve tube 5 ensures that the gas inside the exhaust reserve tube 3 and the inflation reserve tube 5 can only flow in one direction, which is convenient for inflation and deflation operations. In addition, a second silicone rubber sealing ring 11 embedded in the static seal 2 is arranged on the dynamic seal 1, and a ball 10 is evenly and movably connected to the tail of the second silicone rubber sealing ring 11. The ball 10 can be used to convert the sliding friction of the dynamic seal 1 and the static seal 2 during relative movement into rolling friction, thereby reducing the influence of friction resistance and helping to extend the service life of the device.

Claims

1. A chemical reactor shaft integrated mechanical sealing device, characterized in that: The invention comprises a dynamic seal (1) and an inner compression airbag ring (7), wherein one end of the dynamic seal (1) is connected to a spring body (12) and a spring seat (13), the inner compression airbag ring (7) is bonded to the inner side wall of the dynamic seal (1), a first silicone rubber seal ring (8) is fixed to the inner wall of the dynamic seal (1) on one side of the inner compression airbag ring (7), and an exhaust reserve pipe (3) and an inflation reserve pipe (5) which are connected to the inner compression airbag ring (7) are respectively arranged at the top and bottom ends of the dynamic seal (1), and the exhaust reserve pipe (3) and the inflation reserve pipe (5) are A threaded sealing plug (4) and a one-way valve (6) are installed on both ends of the dynamic seal (1), the end of the dynamic seal (1) away from the spring body (12) is connected to the static seal (2), the end of the static seal (2) away from the dynamic seal (1) is fixed with a mounting chimeric block (16), both ends of the mounting chimeric block (16) are provided with a third silicone rubber sealing ring (15), one end of the dynamic seal (1) is provided with a second silicone rubber sealing ring (11) matching the static seal (2), and the second silicone rubber sealing ring (11) is evenly and movably connected with a ball (10).

2. The integrated mechanical sealing device for a chemical reactor shaft according to claim 1, characterized in that: The horizontal center line of the dynamic seal (1) and the horizontal center line of the static seal (2) are on the same straight line, and threaded fixing holes (14) arranged at equal intervals are evenly arranged at the edge of the static seal (2).

3. The integrated mechanical sealing device for a chemical reactor shaft according to claim 1, characterized in that: The dynamic seal (1) and the spring seat (13) are both provided with a rotating shaft sleeve opening (9) inside.

4. The integrated mechanical sealing device for a chemical reactor shaft according to claim 1, characterized in that: The threaded sealing plug (4) is threadedly connected to one end of the exhaust reserve pipe (3) and the inflation reserve pipe (5), respectively.

5. The integrated mechanical sealing device for a chemical reactor shaft according to claim 1, characterized in that: An air cavity (19) is provided inside the inner compression airbag ring (7).

6. The integrated mechanical sealing device for a chemical reactor shaft according to claim 1, characterized in that: The outer side wall of the inner compression airbag ring (7) is provided with a water-absorbing and swelling resin layer (17).

7. The integrated mechanical sealing device for a chemical reactor shaft according to claim 6, characterized in that: A polyurethane base layer (18) is provided on the inner compression airbag ring (7) inside the water-absorbing and swelling resin layer (17).

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