Pipeline sealing structure for molecular distillation equipment

Abstract

The utility model relates to the technical field of molecular distillation equipment, and discloses a pipeline sealing structure for molecular distillation equipment, which comprises an upper pipe, the lower end of the upper pipe is provided with a protruding pipe, the lower end of the protruding pipe is provided with an upper groove, the lower end of the upper groove is provided with a sealing ring I, and the outer side of the upper pipe is welded and connected with a fixed seat. According to the pipeline sealing structure for the molecular distillation equipment, the protruding pipe and the inner pipe base are arranged, after the upper pipe and the lower pipe are installed, the protruding pipe and the inner pipe base are completely attached, the contact area of the upper pipe and the lower pipe is increased, and therefore the sealing effect is improved; the upper groove and the lower groove are filled with the first sealing ring, the sealing effect is improved, the upper protruding ring, the lower protruding rings and the second sealing ring are arranged, after the upper pipe and the lower pipe are installed, the upper protruding ring is inserted among the multiple lower protruding rings, the second sealing ring is pressed and deformed, the gap between the upper protruding ring and the lower protruding rings is sealed, and the sealing effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of molecular distillation equipment, and specifically relates to a pipeline sealing structure for a molecular distillation equipment. Background Technique

[0002] The heating of the molecular distillation equipment can withstand high temperatures above 300°C. The temperature difference between startup and shutdown is relatively large, and the thermal expansion and contraction have a greater impact on the sealing effect at the connection of the column body. During the operation of molecular distillation, the requirement for vacuum degree is extremely high, and it should be continuously maintained below -10 Pa or even -0.1 Pa during operation. Therefore, the sealing requirement for the molecular distillation equipment is extremely high. The conventional O-ring seal is difficult to continuously meet the requirements for a long time. The middle part of the column body is subjected to the greatest force, and its sealing requirement is extremely high.

[0003] Chinese Utility Model Patent Publication No.: CN 217633841 U, discloses: a sealing structure for a molecular distillation equipment. For this sealing structure of the molecular distillation equipment, silicone sealant resistant to high temperature of 350°C is applied on both sides of the O-ring seal and at the position of chamfer one, then the column body one is pressed on the column body two, silicone sealant resistant to high temperature of 350°C is applied at the position of chamfer two, and then the rotating ring is rotated to firmly connect the column body one and the column body two together, and then the position of the rotating ring is fixed. Through multi-layer sealing, the sealing effect between the column body one and the column body two is the best. However, for this sealing structure of the molecular distillation equipment, it is necessary to rotate the rotating ring to firmly connect the column body one and the column body two together, and the rotation of the rotating ring is not convenient for operation, which is rather laborious and affects the installation efficiency. Summary of the Invention

[0004] The technical problem to be solved by the utility model is to provide a pipeline sealing structure for a molecular distillation equipment, which can effectively solve the problems in the prior art.

[0005] The technical solution adopted by the utility model is: a pipeline sealing structure for a molecular distillation equipment, including an upper pipe, a protruding pipe is arranged at the lower end of the upper pipe, an upper groove is opened at the lower end of the protruding pipe, a sealing ring one is arranged at the lower end of the upper groove, a fixed seat is welded and connected to the outer side of the upper pipe, an inclined surface is opened at the lower end of the fixed seat, a clamping groove is opened at the upper end of the fixed seat, an upper flange is arranged at the lower end of the upper pipe, an upper convex ring is arranged at the lower end of the upper flange, a notch is opened at the outer side of the upper flange, a lower pipe is arranged at the lower end of the upper pipe, an inner pipe seat is arranged on the inner wall of the lower pipe, a lower groove is opened at the upper end of the inner pipe seat, a lower flange is arranged at the upper end of the lower pipe, a lower convex ring is arranged at the upper end of the lower flange, a sealing ring two is arranged at the upper end of the lower flange, and a limiting component is arranged at the upper end of the lower flange;

[0006] The limiting component includes a mounting seat, an upper seat, an upper connecting column, a spring, a rotating rod, a clamping block, a top arc surface and a lower connecting column. An upper seat is fixedly connected to the inner side of the mounting seat. An upper connecting column is fixedly connected to the outer side of the upper seat. A spring is fixedly connected to the upper end of the upper connecting column. A rotating rod is rotatably connected to the upper end of the mounting seat. A clamping block is arranged at the upper end of the rotating rod. A top arc surface is formed at the upper end of the clamping block. A lower connecting column is fixedly connected to the inner side of the rotating rod.

[0007] Preferably, the cross-section of the protruding pipe is in a trapezoidal structure, and the protruding pipe is adapted to the inner pipe seat.

[0008] Through the above technical solution, the protruding pipe and the inner pipe seat are provided. After the upper pipe and the lower pipe are installed, the protruding pipe and the inner pipe seat are completely fitted, improving the contact area between the upper pipe and the lower pipe, thereby enhancing the sealing effect.

[0009] Preferably, the upper groove and the lower groove correspond to each other, and the first sealing ring is arranged between the upper groove and the lower groove.

[0010] Through the above technical solution, the upper groove, the lower groove and the first sealing ring are provided. When the protruding pipe and the inner pipe seat are in close contact, the first sealing ring fills the upper groove and the lower groove, enhancing the sealing effect.

[0011] Preferably, the upper convex ring and the lower convex ring are in plug-in fit, and the second sealing ring is arranged between multiple lower convex rings.

[0012] Through the above technical solution, the upper convex ring, the lower convex ring and the second sealing ring are provided. After the upper pipe and the lower pipe are installed, the upper convex ring is inserted between multiple lower convex rings, pressing the second sealing ring to deform, sealing the gap between the upper convex ring and the lower convex ring. The contact area of the sealing member is large and the sealing effect is good.

[0013] Preferably, there are four identical limiting components and fixing seats, and the limiting components correspond to the fixing seats.

[0014] Through the above technical solution, the limiting component is provided to improve the installation speed of the upper pipe and the lower pipe.

[0015] Preferably, the upper end of the spring is fixedly connected to the lower connecting column, and the lower connecting column is in contact with the rotating rod when the rotating rod is in a vertical state.

[0016] Through the above technical solution, a spring is provided. In the initial state, the rotating rod is in a vertical state. When installing the upper pipe and the lower pipe, align the clamping block with the notch. Move the lower pipe upward. During this process, the top arc surface of the clamping block contacts the notch, extruding the clamping block outward, causing the rotating rod to rotate outward, stretching and growing the spring until the clamping block is higher than the notch. Then, the spring contracts to drive the rotating rod to reset. The clamping block contacts the inclined surface of the fixed seat and moves along the inclined surface until the clamping block is inserted into the clamping groove of the fixed seat, limiting and fixing the upper pipe and the lower pipe. Then, use bolts to lock the clamping block and the fixed seat, and use bolts to lock the upper flange and the lower flange. The speed of alignment and installation is fast, improving the installation efficiency.

[0017] Preferably, the notch corresponds to the mounting seat. The top arc surface has a quarter-circular structure, and the clamping block is adapted to the clamping groove.

[0018] Through the above technical solution, a clamping block and a clamping groove are provided. The upper pipe and the lower pipe are limited and locked by clamping the clamping block and the clamping groove.

[0019] Compared with the prior art, the present utility model provides a pipeline sealing structure for a molecular distillation device, having the following beneficial effects:

[0020] 1. For the pipeline sealing structure of the molecular distillation device, a protruding pipe and an inner pipe seat are provided. After the upper pipe and the lower pipe are installed, the protruding pipe and the inner pipe seat are completely fitted, increasing the contact area between the upper pipe and the lower pipe, thereby improving the sealing effect. An upper groove, a lower groove and a first sealing ring are provided. When the protruding pipe and the inner pipe seat are in close contact, the first sealing ring fills the upper groove and the lower groove, improving the sealing effect. An upper convex ring, a lower convex ring and a second sealing ring are provided. After the upper pipe and the lower pipe are installed, the upper convex ring is inserted between multiple lower convex rings, pressing and deforming the second sealing ring to seal the gap between the upper convex ring and the lower convex ring. The contact area of the sealing parts is large and the sealing effect is good.

[0021] 2. For the pipeline sealing structure of the molecular distillation device, a spring is provided. In the initial state, the rotating rod is in a vertical state. When installing the upper pipe and the lower pipe, align the clamping block with the notch. Move the lower pipe upward. During this process, the top arc surface of the clamping block contacts the notch, extruding the clamping block outward, causing the rotating rod to rotate outward, stretching and growing the spring until the clamping block is higher than the notch. Then, the spring contracts to drive the rotating rod to reset. The clamping block contacts the inclined surface of the fixed seat and moves along the inclined surface until the clamping block is inserted into the clamping groove of the fixed seat, limiting and fixing the upper pipe and the lower pipe. Then, use bolts to lock the clamping block and the fixed seat, and use bolts to lock the upper flange and the lower flange. The speed of alignment and installation is fast, improving the installation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0023] Figure 2Schematic diagram of the split structure of the upper pipe and the lower pipe of the present utility model Figure 1 ;

[0024] Figure 3 Schematic diagram of the split structure of the upper pipe and the lower pipe of the present utility model Figure 2 ;

[0025] Figure 4 Schematic structural diagram of the installation process of the upper pipe and the lower pipe of the present utility model;

[0026] Figure 5 Schematic three-dimensional sectional structure diagram of the upper pipe and the lower pipe of the present utility model.

[0027] Wherein: 1. Upper pipe; 2. Protruding pipe; 3. Upper groove; 4. First sealing ring; 5. Fixed seat; 6. Inclined surface; 7. Card slot; 8. Upper flange; 9. Upper convex ring; 10. Lower pipe; 11. Inner pipe seat; 12. Lower groove; 13. Lower flange; 14. Lower convex ring; 15. Second sealing ring; 16. Limit component; 1601. Mounting seat; 1602. Upper seat; 1603. Upper connecting column; 1604. Spring; 1605. Rotating rod; 1606. Clamping block; 1607. Top arc surface; 1608. Lower connecting column; 17. Notch. Specific embodiments

[0028] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0029] Embodiment 1: As Figures 1-5 shown, a pipeline sealing structure for a molecular distillation device provided by the present utility model includes an upper pipe 1. A protruding pipe 2 is provided at the lower end of the upper pipe 1. An upper groove 3 is opened at the lower end of the protruding pipe 2. A first sealing ring 4 is provided at the lower end of the upper groove 3. A fixed seat 5 is welded and connected to the outer side of the upper pipe 1. An inclined surface 6 is opened at the lower end of the fixed seat 5. A card slot 7 is opened at the upper end of the fixed seat 5. An upper flange 8 is provided at the lower end of the upper pipe 1. An upper convex ring 9 is provided at the lower end of the upper flange 8. A notch 17 is opened on the outer side of the upper flange 8. A lower pipe 10 is provided at the lower end of the upper pipe 1. An inner pipe seat 11 is provided on the inner wall of the lower pipe 10. A lower groove 12 is opened at the upper end of the inner pipe seat 11. A lower flange 13 is provided at the upper end of the lower pipe 1. A lower convex ring 14 is provided at the upper end of the lower flange 13. A second sealing ring 15 is provided at the upper end of the lower flange 13. A limit component 16 is provided at the upper end of the lower flange 13;

[0030] The limit component 16 includes a mounting base 1601, an upper seat 1602, an upper connecting column 1603, a spring 1604, a rotating rod 1605, a clamping block 1606, a top arc surface 1607 and a lower connecting column 1608. The inner side of the mounting base 1601 is fixedly connected with the upper seat 1602. The outer side of the upper seat 1602 is fixedly connected with the upper connecting column 1603. The upper end of the upper connecting column 1603 is fixedly connected with the spring 1604. The upper end of the mounting base 1601 is rotatably connected with the rotating rod 1605. The upper end of the rotating rod 1605 is provided with the clamping block 1606. The upper end of the clamping block 1606 is provided with the top arc surface 1607. The inner side of the rotating rod 1605 is fixedly connected with the lower connecting column 1608.

[0031] Specifically, the cross-section of the protruding tube 2 is trapezoidal, and the protruding tube 2 is adapted to the inner tube seat 11. The advantage is that the protruding tube 2 and the inner tube seat 11 are provided. After the upper tube 1 and the lower tube 10 are installed, the protruding tube 2 and the inner tube seat 11 are completely fitted, improving the contact area between the upper tube 1 and the lower tube 10, thereby improving the sealing effect.

[0032] Specifically, the upper groove 3 corresponds to the lower groove 12, and the first sealing ring 4 is arranged between the upper groove 3 and the lower groove 12. The advantage is that the upper groove 3, the lower groove 12 and the first sealing ring 4 are provided. When the protruding tube 2 is in close contact with the inner tube seat 11, the first sealing ring 4 fills the upper groove 3 and the lower groove 12, improving the sealing effect.

[0033] Specifically, the upper convex ring 9 is inserted and matched with the lower convex rings 14, and the second sealing ring 15 is arranged between the plurality of lower convex rings 14. The advantage is that the upper convex ring 9, the lower convex rings 14 and the second sealing ring 15 are provided. After the upper tube 1 and the lower tube 10 are installed, the upper convex ring 9 is inserted between the plurality of lower convex rings 14, pressing the second sealing ring 15 to deform, sealing the gap between the upper convex ring 9 and the lower convex rings 14. The contact area of the sealing member is large and the sealing effect is good.

[0034] Embodiment 2: As Figures 2-5 shown, as an improvement to the previous embodiment.

[0035] Specifically, there are four limit components 16 and fixing seats 5 which are the same, and the limit components 16 correspond to the fixing seats 5. The advantage is that the limit components 16 are provided, improving the installation speed of the upper tube 1 and the lower tube 10.

[0036] Specifically, the upper end of the spring 1604 is fixedly connected to the lower connecting column 1608, and when the rotating rod 1605 is in a vertical state, the lower connecting column 1608 contacts the rotating rod 1605. The advantage is that the spring 1604 is provided. In the initial state, the rotating rod 1605 is in a vertical state. When the upper pipe 1 and the lower pipe 10 are installed, the clamping block 1606 is aligned with the notch 17, and the lower pipe 10 is moved upward. During this process, the top arc surface 1607 of the clamping block 1606 contacts the notch 17, the clamping block 1606 is extruded outward, the rotating rod 1605 rotates outward, the spring 1604 stretches and grows. Until the clamping block 1606 is higher than the notch 17, the spring 1604 contracts to drive the rotating rod 1605 to reset. The clamping block 1606 contacts the inclined surface 6 of the fixed seat 5, and the clamping block 1606 moves along the inclined surface 6 until the clamping block 1606 is inserted into the card slot 7 of the fixed seat 5, limiting and fixing the upper pipe 1 and the lower pipe 10. Then, bolts are used to lock the clamping block 1606 and the fixed seat 5, and bolts are used to lock the upper flange 8 and the lower flange 13. The speed of alignment and installation is fast, improving the installation efficiency.

[0037] Specifically, the notch 17 corresponds to the mounting seat 1601, the top arc surface 1607 has a quarter-circular structure, and the clamping block 1606 is adapted to the card slot 7. The advantage is that the clamping block 1606 and the card slot 7 are provided, and the upper pipe 1 and the lower pipe 10 are limited and locked by the clamping connection of the clamping block 1606 and the card slot 7.

[0038] Working principle: During installation, in the initial state, the rotating rod 1605 is in a vertical state. When the upper pipe 1 and the lower pipe 10 are installed, the clamping block 1606 is aligned with the notch 17, and the lower pipe 10 is moved upward. During this process, the top arc surface 1607 of the clamping block 1606 contacts the notch 17, the clamping block 1606 is extruded outward, the rotating rod 1605 rotates outward, the spring 1604 stretches and grows. Until the clamping block 1606 is higher than the notch 17, the spring 1604 contracts to drive the rotating rod 1605 to reset. The clamping block 1606 contacts the inclined surface 6 of the fixed seat 5, and the clamping block 1606 moves along the inclined surface 6 until the clamping block 1606 is inserted into the card slot 7 of the fixed seat 5, limiting and fixing the upper pipe 1 and the lower pipe 10. Then, bolts are used to lock the clamping block 1606 and the fixed seat 5, and bolts are used to lock the upper flange 8 and the lower flange 13. The speed of alignment and installation is fast, improving the installation efficiency. When the upper pipe 1 and the lower pipe 10 are installed, the protruding pipe 2 is completely attached to the inner pipe seat 11, increasing the contact area between the upper pipe 1 and the lower pipe 10, thereby improving the sealing effect. The sealing ring 4 fills the upper groove 3 and the lower groove 12, improving the sealing effect. When the upper pipe 1 and the lower pipe 10 are installed, the upper convex ring 9 is inserted between multiple lower convex rings 14, pressing and deforming the sealing ring 2, sealing the gap between the upper convex ring 9 and the lower convex ring 14. The contact area of the sealing parts is large and the sealing effect is good.

[0039] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A pipeline sealing structure for a molecular distillation device, comprising an upper pipe (1), characterized in that: The lower end of the upper tube (1) is provided with a protruding tube (2), the lower end of the protruding tube (2) is provided with an upper groove (3), the lower end of the upper groove (3) is provided with a sealing ring (4), the outer side of the upper tube (1) is welded with a fixing seat (5), the lower end of the fixing seat (5) is provided with an inclined surface (6), the upper end of the fixing seat (5) is provided with a clamping groove (7), the lower end of the upper tube (1) is provided with an upper flange (8), the lower end of the upper flange (8) is provided with an upper convex ring (9), the upper flange ( 8) a notch (17) is provided on the outer side, a lower tube (10) is provided at the lower end of the upper tube (1), an inner tube seat (11) is provided on the inner wall of the lower tube (10), a lower groove (12) is provided at the upper end of the inner tube seat (11), a lower flange (13) is provided at the upper end of the lower tube (10), a lower convex ring (14) is provided at the upper end of the lower flange (13), a sealing ring (15) is provided at the upper end of the lower flange (13), and a limit assembly (16) is provided at the upper end of the lower flange (13); The limiting assembly (16) comprises a mounting seat (1601), an upper seat (1602), an upper connecting column (1603), a spring (1604), a rotating rod (1605), a clamping block (1606), a top arc surface (1607) and a lower connecting column (1608); the inner side of the mounting seat (1601) is fixedly connected to the upper seat (1602); the outer side of the upper seat (1602) is fixedly connected to the upper connecting column (1603); the upper end of the upper connecting column (1603) is fixedly connected to the spring (1604); the upper end of the mounting seat (1601) is rotatably connected to the rotating rod (1605); the upper end of the rotating rod (1605) is provided with a clamping block (1606); the upper end of the clamping block (1606) is provided with a top arc surface (1607); the inner side of the rotating rod (1605) is fixedly connected to the lower connecting column (1608).

2. The pipeline sealing structure for molecular distillation equipment according to claim 1, characterized in that: The cross section of the protruding tube (2) is a trapezoidal structure, and the protruding tube (2) is matched with the inner tube seat (11).

3. The pipeline sealing structure for a molecular distillation device according to claim 1, characterized in that: The upper groove (3) corresponds to the lower groove (12), and the sealing ring (4) is arranged between the upper groove (3) and the lower groove (12).

4. The pipeline sealing structure for molecular distillation equipment according to claim 1, characterized in that: The upper convex ring (9) is plug-fitted with the lower convex ring (14), and the second sealing ring (15) is arranged between a plurality of lower convex rings (14).

5. The pipeline sealing structure for molecular distillation equipment according to claim 1, characterized in that: The limiting components (16) and the fixing seat (5) are both provided with four identical ones, and the limiting components (16) correspond to the fixing seat (5).

6. The pipeline sealing structure for molecular distillation equipment according to claim 1, characterized in that: The upper end of the spring (1604) is fixedly connected to the lower connecting column (1608), and when the rotating rod (1605) is in a vertical state, the lower connecting column (1608) is in contact with the rotating rod (1605).

7. The pipeline sealing structure for molecular distillation equipment according to claim 1, characterized in that: The notch (17) corresponds to the mounting seat (1601), the top arc surface (1607) is a quarter-circular structure, and the clamping block (1606) is adapted to the clamping slot (7).

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