Stirring shaft sealing structure of plastic-lined closed reaction kettle

Abstract

The utility model relates to the field of plastic-lined closed reaction kettles, and discloses a stirring shaft sealing structure of a plastic-lined closed reaction kettle, which comprises a kettle body, a clamping ring is fixedly connected to the middle of the kettle body, a shaft body is rotatably connected to the middle of the clamping ring, a pressing block is fixedly connected to the periphery of the shaft body, the pressing block is clamped to the middle of the clamping ring, and the clamping ring is fixedly connected to the periphery of the shaft body. The inner top of the kettle body is fixedly connected with a connecting rod, the periphery of the connecting rod is provided with an elastic assembly, the periphery of the connecting rod is slidably connected with a supporting plate, the top of the supporting plate is fixedly connected with a sealing ring, the sealing ring is clamped in the middle of the clamping ring, the elastic assembly comprises a stop block, and the stop block is fixedly connected with the bottom of the kettle body. The check block is fixedly connected to the periphery of the connecting rod. According to the utility model, firstly, under the action of the connecting rod, the supporting plate can drive the sealing ring to slide in the middle of the kettle body, and under the pushing of the pressure spring, the sealing ring can be tightly attached to the clamping ring and the shaft body under the action of the pressure spring when the interior of the kettle is in high-pressure and high-temperature conditions.

Description

Technical Field

[0001] This utility model relates to the field of plastic-lined closed reactors, and in particular to a stirring shaft sealing structure for a plastic-lined closed reactor. Background Technology

[0002] With societal development, reaction vessels are widely used in various industries such as petroleum, chemical, pharmaceutical, and food. Plastic-lined closed reaction vessels, as a new type of reaction vessel, employ an inner plastic lining design, which not only effectively improves corrosion resistance but also enhances heat transfer efficiency to a certain extent. Simultaneously, by mixing different types of materials in the reaction vessel through stirring, not only is uniform distribution of the components ensured but the contact area between reactants is also increased, thereby improving the reaction rate.

[0003] Traditional plastic-lined closed reactors typically install a sealing ring between the stirring shaft and the reactor body to improve the sealing effect between the shaft and the reactor body, ensuring stable operation and production efficiency. However, in actual use, the stirring shaft sealing structure is prone to loosening under high temperature and high pressure conditions, resulting in poor sealing, wear of the sealing surface, and thus affecting the sealing effect. To address this issue, a stirring shaft sealing structure for plastic-lined closed reactors is proposed. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a stirring shaft sealing structure for a plastic-lined closed reactor, aiming to improve the problem that the sealing structure in the prior art is prone to loosening and damage under high temperature and high pressure conditions.

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

[0006] A stirring shaft sealing structure for a plastic-lined closed reactor includes a reactor body, a retaining ring fixedly connected to the middle of the reactor body, a shaft rotatably connected to the middle of the retaining ring, a pressure block fixedly connected to the outer periphery of the shaft, the pressure block being engaged with the middle of the retaining ring, a connecting rod fixedly connected to the inner top of the reactor body, an elastic component installed on the outer periphery of the connecting rod, a support plate slidably connected to the outer periphery of the connecting rod, a sealing ring fixedly connected to the top of the support plate, and the sealing ring being engaged with the middle of the retaining ring.

[0007] The elastic component includes a stop block, which is fixedly connected to the outer periphery of the connecting rod, and a compression spring is sleeved on the outer periphery of the connecting rod;

[0008] As a further description of the above technical solution:

[0009] A connecting plate is fixedly connected to the outer periphery of the shaft, and a locking block is fixedly connected to the bottom of the connecting plate. The locking block is rotatably connected to the middle part of the vessel body.

[0010] As a further description of the above technical solution:

[0011] A ball bearing is installed in the middle of the card block;

[0012] As a further description of the above technical solution:

[0013] An oil inlet is fixedly connected to the middle of the connecting plate, and one end of the oil inlet passes through the connecting plate and the locking block from top to bottom;

[0014] As a further description of the above technical solution:

[0015] A sliding groove is provided in the middle of the vessel body, and the locking block is rotatably connected to the middle of the sliding groove;

[0016] As a further description of the above technical solution:

[0017] The tray has a through hole in the middle, and the connecting rod is slidably connected to the middle of the through hole;

[0018] As a further description of the above technical solution:

[0019] The compression spring is located between the support plate and the stop block;

[0020] As a further description of the above technical solution:

[0021] A groove is provided in the middle of the vessel body, and the connecting rod is fixedly connected to the inner top of the groove.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, firstly, under the action of the connecting rod, the support plate can drive the sealing ring to slide in the middle of the vessel body, and under the push of the compression spring, when the vessel is under high pressure and high temperature, the sealing ring can tightly adhere to the retaining ring and the shaft under the action of the compression spring.

[0024] 2. In this utility model, lubricating oil is injected into the sluice through the oil inlet, so that the connecting plate and the locking block form a sealed space at the top of the vessel. When the shaft rotates, it will drive the locking block to rotate in the middle of the sluice, thereby isolating air under the action of lubricating oil and further improving the sealing effect. Attached Figure Description

[0025] Figure 1 This is a three-dimensional schematic diagram of the stirring shaft sealing structure of a plastic-lined closed reactor proposed in this utility model.

[0026] Figure 2 This is a schematic diagram of the ball bearing structure of the stirring shaft sealing structure of a plastic-lined closed reactor proposed in this utility model.

[0027] Figure 3 This is a schematic diagram of the sliding groove of the stirring shaft sealing structure of a plastic-lined closed reactor proposed in this utility model;

[0028] Figure 4 This is a schematic diagram of the retaining ring structure of the stirring shaft sealing structure of a plastic-lined closed reactor proposed in this utility model.

[0029] Legend:

[0030] 1. Kettle body; 2. Shaft body; 3. Connecting plate; 4. Oil inlet; 5. Clamping block; 6. Ball bearing; 7. Pressing block; 8. Snap ring; 9. Sealing ring; 10. Support plate; 11. Stop block; 12. Compression spring; 13. Connecting rod; 14. Through hole; 15. Groove; 16. Slide groove. Detailed Implementation

[0031] 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.

[0032] Reference Figure 1 , Figure 3 and Figure 4This utility model provides an embodiment of a stirring shaft sealing structure for a plastic-lined closed reactor, comprising a reactor body 1, a retaining ring 8 fixedly connected to the middle of the reactor body 1, a shaft 2 rotatably connected to the middle of the retaining ring 8, a pressure block 7 fixedly connected to the outer periphery of the shaft 2, the pressure block 7 being engaged with the middle of the retaining ring 8, a connecting rod 13 fixedly connected to the inner top of the reactor body 1, an elastic component installed on the outer periphery of the connecting rod 13, and a support plate 10 slidably connected to the outer periphery of the connecting rod 13, the top of the support plate 10... A sealing ring 9 is fixedly connected to the part, and the sealing ring 9 is snapped into the middle of the retaining ring 8. The elastic component includes a stop block 11, which is fixedly connected to the outer periphery of the connecting rod 13. A compression spring 12 is sleeved on the outer periphery of the connecting rod 13. A through hole 14 is opened in the middle of the support plate 10, and the connecting rod 13 is slidably connected in the middle of the through hole 14. The compression spring 12 is located between the support plate 10 and the stop block 11. A groove 15 is opened in the middle of the vessel body 1, and the connecting rod 13 is fixedly connected to the inner top of the groove 15. First, the pressure block 7 is inserted between the retaining ring 8 and the shaft 2 and fixed to the shaft 2, thereby reducing the gap between the retaining ring 8 and the shaft 2. At the same time, the connecting rod 13 is fixed in the groove 15, so that the support plate 10 can drive the sealing ring 9 to slide on the outer periphery of the connecting rod 13 and insert into the other end of the retaining ring 8. Meanwhile, under the support of the stop block 11, the compression spring 12 can continuously press the support plate 10 upward, so that the sealing ring 9 will not soften and loosen and produce gaps in a high-temperature environment. At the same time, when the sealing ring 9 wears under high pressure, the compression spring 12 can continue to push the sealing ring 9 upward, thereby filling the worn position and further ensuring the sealing effect.

[0033] Reference Figures 1-3 A connecting plate 3 is fixedly connected to the outer periphery of the shaft 2. A locking block 5 is fixedly connected to the bottom of the connecting plate 3. The locking block 5 is rotatably connected to the middle of the vessel body 1. A ball bearing 6 is installed in the middle of the locking block 5. An oil inlet 4 is fixedly connected to the middle of the connecting plate 3. One end of the oil inlet 4 passes through the connecting plate 3 and the locking block 5 from top to bottom. A sliding groove 16 is opened in the middle of the vessel body 1. The locking block 5 is rotatably connected to the middle of the sliding groove 16. First, lubricating oil is poured into the sliding groove 16, so that air is isolated under the action of the locking block 5 and the lubricating oil. At the same time, the connecting plate 3 at the top of the locking block 5 is connected to the shaft 2, so that a sealed space is formed between the connecting plate 3 and the shaft 2. Then, when the shaft 2 rotates, it will drive the locking block 5 to rotate in the sliding groove 16 through the connecting plate 3, thereby isolating the entry of air under the action of the lubricating oil, thus further ensuring the sealing effect. At the same time, the lubricating oil can be replenished under the action of the oil inlet 4, and the ball bearing 6 can reduce the friction generated during rotation, thereby reducing wear.

[0034] Working principle: First, the pressure block 7 on the outer periphery of the shaft 2 is inserted into the retaining ring 8 for fixation, reducing the entry of outside air. At the same time, under the action of the connecting rod 13, the support plate 10 can drive the sealing ring 9 to slide in the middle of the vessel body 1. Under the push of the compression spring 12, when the vessel is under high pressure and high temperature, the sealing ring 9 can be tightly attached to the retaining ring 8 and the shaft 2 under the action of the compression spring 12. When the edge of the sealing ring 9 is worn, it can continue to be attached to the retaining ring 8 and the sealing ring 9 under the push of the compression spring 12, thereby ensuring a continuous sealing effect.

[0035] Lubricating oil is injected into the slide groove 16 through the oil inlet 4, so that the connecting plate 3 and the locking block 5 form a sealed space at the top of the vessel body 1. When the shaft 2 rotates, it will drive the locking block 5 to rotate in the middle of the slide groove 16, thereby isolating air under the action of lubricating oil and further improving the sealing effect. At the same time, under the action of the ball bearing 6, the friction generated during rotation can be reduced, thereby reducing wear.

[0036] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A stirring shaft sealing structure for a plastic-lined closed reactor, comprising a reactor body (1), characterized in that: A retaining ring (8) is fixedly connected to the middle of the vessel body (1). A shaft (2) is rotatably connected to the middle of the retaining ring (8). A pressure block (7) is fixedly connected to the outer periphery of the shaft (2). The pressure block (7) is engaged in the middle of the retaining ring (8). A connecting rod (13) is fixedly connected to the inner top of the vessel body (1). An elastic component is installed on the outer periphery of the connecting rod (13). A support plate (10) is slidably connected to the outer periphery of the connecting rod (13). A sealing ring (9) is fixedly connected to the top of the support plate (10). The sealing ring (9) is engaged in the middle of the retaining ring (8). The elastic component includes a stop (11), which is fixedly connected to the outer periphery of the connecting rod (13), and a compression spring (12) is sleeved on the outer periphery of the connecting rod (13).

2. The stirring shaft sealing structure of a plastic-lined closed reactor according to claim 1, characterized in that: A connecting plate (3) is fixedly connected to the outer periphery of the shaft (2), and a locking block (5) is fixedly connected to the bottom of the connecting plate (3). The locking block (5) is rotatably connected to the middle part of the vessel body (1).

3. The stirring shaft sealing structure of a plastic-lined closed reactor according to claim 2, characterized in that: A ball bearing (6) is installed in the middle of the card block (5).

4. The stirring shaft sealing structure of a plastic-lined closed reactor according to claim 2, characterized in that: An oil inlet (4) is fixedly connected to the middle of the connecting plate (3), and one end of the oil inlet (4) passes through the connecting plate (3) and the locking block (5) from top to bottom.

5. The stirring shaft sealing structure of a plastic-lined closed reactor according to claim 2, characterized in that: The middle part of the vessel body (1) is provided with a sliding groove (16), and the locking block (5) is rotatably connected to the middle part of the sliding groove (16).

6. The stirring shaft sealing structure of a plastic-lined closed reactor according to claim 1, characterized in that: The tray (10) has a through hole (14) in the middle, and the connecting rod (13) is slidably connected to the middle of the through hole (14).

7. The stirring shaft sealing structure of a plastic-lined closed reactor according to claim 1, characterized in that: The compression spring (12) is located between the support plate (10) and the stop block (11).

8. The stirring shaft sealing structure of a plastic-lined closed reactor according to claim 2, characterized in that: The vessel body (1) has a groove (15) in the middle, and the connecting rod (13) is fixedly connected to the top of the groove (15).

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