Sealing mechanism of PET vacuum reaction kettle

Abstract

The utility model relates to the technical field of reaction kettles, and particularly discloses a sealing mechanism of a PET (Polyethylene Terephthalate) vacuum reaction kettle, which comprises a kettle body and an upper cover, the upper cover covers the upper end of the kettle body, the outer wall of the kettle body is fixedly connected with a mounting plate through bolts, one end of the mounting plate is fixedly provided with a mounting box, and the other end of the mounting box is fixedly provided with a sealing cover. When the upper cover covers the upper end of the kettle body, the upper end of the kettle body is sleeved with the fixing ring and the sealing ring, in the downward moving process of the upper cover, the pushing ring makes contact with the moving ring, the moving ring is pressed downwards, the moving ring pushes the first rack to move downwards, the first rack drives the gear to rotate, and therefore the upper cover can move downwards. The gear drives the second rack to drive the extrusion ring to move upwards, when the extrusion ring moves to the inner end of the moving ring, the extrusion ring makes contact with the outer end of the sealing ring through a slope, the sealing ring is tightly extruded and attached to the outer end of the kettle body, meanwhile, the inner end of the upper cover makes contact with the upper end of the kettle body, and the upper cover and the kettle body are sealed.

Description

Technical Field

[0001] The utility model relates to the technical field of reactors, in particular to a sealing mechanism for a PET vacuum reactor. Background Art

[0002] PET polyester reactors are primarily used for experiments such as material synthesis, distillation, and concentration. They are available in a variety of vessel configurations, including single-, double-, and triple-layered. The vessel's internal pressure can be adjusted to a negative pressure to meet experimental requirements. A constant pressure funnel or a regulating valve on the feeding bottle controls the uniform addition of materials, while the heat exchange function of the condenser is utilized to distill and recover the reaction products. The PET polyester reactor has two layers, an inner and outer layer. A circulating fluid at a constant temperature is injected into the inner layer to regulate the temperature of the material. The outer jacket is evacuated to a vacuum state using a vacuum pump to maintain heat.

[0003] In the prior art, the upper cover is mostly installed on the reactor body by bolts or flanges, and a rubber gasket is provided between the upper cover and the reactor body for sealing. After long-term use, the rubber ring is easily pressed out from between the upper cover and the reactor body, resulting in a problem of poor sealing. Utility Model Content

[0004] The purpose of the utility model is to provide a sealing mechanism for a PET vacuum reactor to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a sealing mechanism for a PET vacuum reactor, comprising: a reactor body and an upper cover, the upper cover covering the upper end of the reactor body, a mounting plate fixedly connected to the outer wall of the reactor body by bolts, a mounting box fixedly mounted on one end of the mounting plate, a rack 1 and a rack 2 respectively meshed and connected in the mounting box by gears, a moving ring fixedly mounted on the upper end of the rack 1, an extrusion ring fixedly mounted on the upper end of the rack 2 via a connecting plate, and a slope formed on the inner end of the extrusion ring;

[0006] A push ring and a fixing ring are fixedly installed on the outer side of the lower end of the upper cover respectively. The inner end of the fixing ring is slidably connected to the outer wall of the kettle body. A sealing ring is fixedly installed on the lower end of the fixing ring.

[0007] Preferably, two limiting rings are fixedly mounted on the outer end of the kettle body, and the mounting plate is located at the inner ends of the two limiting rings.

[0008] Preferably, the gear is rotatably installed in the installation box, the lower end of rack one is slidably inserted into the installation box and meshed with the outer wall of the gear, and a spring is fixedly installed at the lower end of rack one, and the lower end of the spring is fixedly connected to the bottom end of the installation box.

[0009] Preferably, the lower end of the rack 2 is slidably inserted into the installation box and meshed with the outer wall of the other end of the gear, the upper end of the rack 2 is fixedly connected to the outer end of the connecting plate, and the inner end of the connecting plate is fixedly connected to the lower end of the movable ring.

[0010] Preferably, the outer diameter of the extrusion ring is smaller than the inner diameter of the moving ring.

[0011] Preferably, the diameter of the push ring is the same as the diameter of the movable ring, and the diameter of the fixed ring is the same as the diameter of the extrusion ring.

[0012] Preferably, a slope is provided on the outer side of the lower end of the sealing ring.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] When the upper cover is closed on the upper end of the kettle body, the fixed ring and the sealing ring are sleeved on the upper end of the kettle body. When the upper cover moves down, the push ring contacts the movable ring and presses down the movable ring. The movable ring pushes the rack to move down, and the rack 1 drives the gear to rotate. The gear drives the rack 2 to move up with the extrusion ring. When the extrusion ring moves to the inner end of the moving ring, the extrusion ring contacts the outer end of the sealing ring through the slope, and the sealing ring is tightly squeezed and fitted to the outer end of the kettle body. At the same time, the inner end of the upper cover contacts the upper end of the kettle body, thereby sealing the upper cover and the kettle body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a front view of the structure of the utility model;

[0016] Figure 2 This is a front sectional view of the structure of the utility model;

[0017] Figure 3 This is a partial structural sectional view of the utility model;

[0018] Figure 4 This is a schematic diagram of the connection between the connecting plate and the extrusion ring of the utility model.

[0019] In the figure: 1. Kettle body; 2. Limiting ring; 3. Mounting plate; 4. Mounting box; 5. Rack 1; 6. Spring; 7. Moving ring; 8. Rack 2; 9. Connecting plate; 10. Extrusion ring; 11. Gear; 12. Upper cover; 13. Push ring; 14. Fixed ring; 15. Sealing ring. DETAILED DESCRIPTION

[0020] In order to clearly and completely describe the purpose and technical solution of the present invention and make its advantages more clearly understood, the following is a further detailed description of the embodiments of the present invention in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only part of the embodiments of the present invention, not all of them, and are only used to explain the embodiments of the present invention and are not intended to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] See also Figure 1-Figure 4 The utility model provides a technical solution: a sealing mechanism of a PET vacuum reactor, comprising: a reactor body 1 and an upper cover 12, the upper cover 12 is covered on the upper end of the reactor body 1, and a mounting plate 3 is fixedly connected to the outer wall of the reactor body 1 by bolts, and two limiting rings 2 are fixedly installed on the outer end of the reactor body 1, and the limiting rings 2 and the reactor body 1 are integrally formed, and the mounting plate 3 is located at the inner ends of the two limiting rings 2, and the upper and lower ends of the mounting plate 3 are in contact with the inner ends of the two limiting rings 2, so as to limit the mounting plate 3 and prevent the mounting plate 3 from sliding on the outer end of the reactor body 1.

[0022] One end of the mounting plate 3 is fixedly installed with a mounting box 4, and a protrusion is provided on one side of the mounting box 4 (not shown in the figure), and is connected to the mounting plate 3 through the protrusion. The mounting box 4 is located at the outer ends of the two limit rings 2, and the mounting box 4 is meshed with rack 1 and rack 2 8 through gears 11. The gear 11 is rotatably mounted in the mounting box 4 through the rotating shaft, and the lower end of rack 15 slides into the mounting box 4 and is meshed with the outer wall of the gear 11, and the lower end of rack 15 is fixedly installed with a spring 6, and the lower end of the spring 6 is fixedly connected to the bottom end of the mounting box 4. When the spring 6 is in a balanced state, the lower end of the rack 15 contacts the gear 11, and the lower end of the rack 2 8 slides into the mounting box 4 and is meshed with the outer wall of the other end of the gear 11. The upper end of the rack 2 8 is fixedly connected to the outer end of the connecting plate 9, and the inner end of the connecting plate 9 is fixedly connected to the lower end of the movable ring 7. The rack 15 and the rack 2 8 are respectively in contact with the upper and lower sides of the left and right ends of the gear 11.

[0023] Rack 1 5 and rack 2 8 are provided with sliding grooves (not numbered in the figure) at both the front and rear ends, and sliders (not shown in the figure) are provided on the front and rear sides of the upper end of the mounting box 4. The sliders are inserted into the sliding grooves to guide rack 1 5 and rack 2 8 when they move.

[0024] The upper end of the rack 1 5 is fixedly mounted with a moving ring 7, and the upper end of the rack 2 8 is fixedly mounted with an extrusion ring 10 via a connecting plate 9. The inner end of the extrusion ring 10 is provided with a slope, and the outer diameter of the extrusion ring 10 is smaller than the inner diameter of the moving ring 7, so that the extrusion ring 10 can be moved to the inner end of the moving ring 7;

[0025] The outer side of the lower end of the upper cover 12 is fixedly installed with a push ring 13 and a fixed ring 14, the inner end of the fixed ring 14 is slidably connected to the outer wall of the kettle body 1, and the lower end of the fixed ring 14 is fixedly installed with a sealing ring 15. The outer side of the lower end of the sealing ring 15 is provided with a slope. The slope of the lower end of the sealing ring 15 and the slope angle and slope of the inner side of the upper end of the extrusion ring 10 are the same. The diameter of the push ring 13 is the same as the diameter of the movable ring 7, and the diameter of the fixed ring 14 is the same as the diameter of the extrusion ring 10. When the upper cover 12 is closed on the upper end of the kettle body 1, it is fixed. The ring 14 and the sealing ring 15 are sleeved on the upper end of the kettle body 1. When the upper cover 12 moves downward, the push ring 13 contacts the moving ring 7 and presses the moving ring 7 downward. The moving ring 7 pushes the rack 15 to move downward, and the rack 15 drives the gear 11 to rotate. The gear 11 drives the rack 2 8 to move up with the extrusion ring 10. When the extrusion ring 10 moves to the inner end of the moving ring 7, the extrusion ring 10 contacts the outer end of the sealing ring 15 through the slope, and the sealing ring 15 is tightly squeezed and fits the outer end of the kettle body 1, thereby sealing the upper cover 12 and the kettle body 1.

[0026] During actual use, when the upper cover 12 is closed on the upper end of the kettle body 1, the fixed ring 14 and the sealing ring 15 are sleeved on the upper end of the kettle body 1. During the downward movement of the upper cover 12, the push ring 13 contacts the movable ring 7 and presses the movable ring 7 downward. The movable ring 7 pushes the rack 15 to move downward, and the rack 15 drives the gear 11 to rotate. The gear 11 drives the rack 2 8 to move up with the extrusion ring 10. When the extrusion ring 10 moves to the inner end of the moving ring 7, the extrusion ring 10 contacts the outer end of the sealing ring 15 through the slope, and the sealing ring 15 is tightly squeezed and fitted to the outer end of the kettle body 1. At the same time, the inner end of the upper cover 12 contacts the upper end of the kettle body 1 to seal the upper cover 12 and the kettle body 1, and then the upper cover 12 and the kettle body 1 are fixed by a long screw.

[0027] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sealing mechanism for a PET vacuum reactor, comprising: A kettle body (1) and an upper cover (12), wherein the upper cover (12) covers the upper end of the kettle body (1), characterized in that: a mounting plate (3) is fixedly connected to the outer wall of the kettle body (1) by bolts, a mounting box (4) is fixedly installed on one end of the mounting plate (3), a rack 1 (5) and a rack 2 (8) are respectively meshed and connected in the mounting box (4) through a gear (11), a moving ring (7) is fixedly installed on the upper end of the rack 1 (5), an extrusion ring (10) is fixedly installed on the upper end of the rack 2 (8) through a connecting plate (9), and a slope is provided at the inner end of the extrusion ring (10); A push ring (13) and a fixing ring (14) are fixedly installed on the outer side of the lower end of the upper cover (12), the inner end of the fixing ring (14) is slidably connected to the outer wall of the kettle body (1), and a sealing ring (15) is fixedly installed on the lower end of the fixing ring (14).

2. The sealing mechanism of a PET vacuum reactor according to claim 1, characterized in that: Two limiting rings (2) are fixedly mounted on the outer end of the kettle body (1), and the mounting plate (3) is located at the inner ends of the two limiting rings (2).

3. The sealing mechanism of a PET vacuum reactor according to claim 2, characterized in that: The gear (11) is rotatably mounted in the mounting box (4), the lower end of the rack (5) is slidably inserted into the mounting box (4) and meshed with the outer wall of the gear (11), and a spring (6) is fixedly mounted on the lower end of the rack (5), and the lower end of the spring (6) is fixedly connected to the bottom end of the mounting box (4).

4. The sealing mechanism of a PET vacuum reactor according to claim 1, characterized in that: The lower end of the second rack (8) is slidably inserted into the mounting box (4) and meshedly connected with the outer wall of the other end of the gear (11). The upper end of the second rack (8) is fixedly connected to the outer end of the connecting plate (9), and the inner end of the connecting plate (9) is fixedly connected to the lower end of the moving ring (7).

5. The sealing mechanism of a PET vacuum reactor according to claim 4, characterized in that: The outer diameter of the extrusion ring (10) is smaller than the inner diameter of the moving ring (7).

6. The sealing mechanism of a PET vacuum reactor according to claim 1, characterized in that: The diameter of the push ring (13) is the same as the diameter of the moving ring (7), and the diameter of the fixed ring (14) is the same as the diameter of the extrusion ring (10).

7. The sealing mechanism of a PET vacuum reactor according to claim 1, characterized in that: The outer side of the lower end of the sealing ring (15) is provided with a slope.

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