Vacuum safety sealing ring of high-efficiency ester exchange reaction kettle for series antioxidants

Abstract

The utility model provides a vacuum safety sealing ring of a series antioxidant high-efficiency ester exchange reaction kettle, which relates to the technical field of vacuum safety sealing rings of reaction kettles and comprises an upper lengthening ring, a lower outer lengthening ring is arranged on the outer side of the bottom of the upper lengthening ring, a lower inner lengthening ring is arranged on the inner side of the bottom of the upper lengthening ring, and a sealing ring is arranged on the lower inner side of the upper lengthening ring. And sealing surfaces are arranged on the outer surfaces of the upper lengthened ring and the lower inner lengthened ring. In the use process, the sealing ring is fixed to the manhole through the manhole cover and the screws, after the manhole cover is closed, the sealing ring makes contact with the manhole seat ring through the groove and is pressed and fixed, the lengthened ring on the upper portion of the sealing ring body makes close contact with the manhole cover and is fixed, and when the interior of a kettle is vacuum, the sealing ring is tightly pressed and fixed by means of the special structure of the sealing ring. When the manhole device is sealed, the plane sealing ring is contracted inwards to be tightly attached to the surfaces of the manhole seat ring and the manhole cover, the self-sealing effect is achieved, the manhole device achieves the fixing and sealing effects, and therefore the problem of vacuum leakage caused by the fact that the plane sealing ring contracts inwards due to vacuum in a kettle is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of a vacuum safety sealing ring for a reactor, in particular to a vacuum safety sealing ring for a series of antioxidant high - efficiency transesterification reactors. Background Art

[0002] In the production process of phenolic antioxidant products such as 1010, 1076, 1098, 245 and 1135, a very crucial production equipment is the transesterification reactor. Due to the need for internal maintenance, inspection and feeding of solid materials in the reactor, manholes are provided, and the manholes often need to be opened for feeding solid materials and then sealed after feeding. The manhole is usually sealed with a flat elliptical rubber gasket. The rubber gasket is usually cut into an ellipse from a rubber sheet and then the middle is hollowed out. The structure is relatively simple, and it is easy to displace and not easy to fix on the manhole. Especially in a high - vacuum state, due to the large vacuum in the reactor, a certain pressure difference is generated on the gasket. And the gasket has only one sealing surface, and under the pressure difference, the gasket is easy to move into the reactor and leave the sealing surface, losing the sealing performance, resulting in air entering the reactor and poor sealing.

[0003] In the production process of phenolic antioxidant products such as 1010, 1076, 1098, 245 and 1135, a very high vacuum degree is required. If the vacuum degree cannot be achieved, first, it will affect the conversion rate of the product; second, it will affect the purity of the product; third, because air enters the reactor from the sealing gasket, the reaction materials in the reactor will react with oxygen in the air at high temperature and turn yellow, seriously affecting the appearance quality of the product.

[0004] In view of the above defects of the existing sealing rings and gaskets, the purpose of the present utility model is to design a new type of vacuum safety sealing ring for a series of antioxidant high - efficiency transesterification reactors to solve the defects of poor sealing and easy displacement of the existing sealing rings with a flat structure. Content of the Utility Model

[0005] The purpose of the present utility model is to solve the problem of the defects of poor sealing and easy displacement of the existing sealing rings with a flat structure in the prior art.

[0006] To achieve the above purpose, the present utility model adopts the following technical scheme: A vacuum safety sealing ring for a series of antioxidant high - efficiency transesterification reactors, including an upper extended ring. The outer side of the bottom of the upper extended ring is provided with a lower outer extended ring, the inner side of the bottom of the upper extended ring is provided with a lower inner extended ring, and sealing surfaces are provided on the outer surfaces of the upper extended ring and the lower inner extended ring.

[0007] Further, a groove is provided between the lower inner extended ring and the lower outer extended ring, the

[0008] Both the upper inner extended ring and the lower outer extended ring are circular or elliptical ring bodies.

[0009] Furthermore, the upper extended ring fits tightly with the manhole cover.

[0010] Compared with the prior art, the advantages and positive effects of the present utility model are as follows.

[0011] 1. In the present utility model, during use, the sealing ring is fixed on the manhole by the manhole cover and screws. After closing the manhole cover, the sealing ring contacts and presses against the manhole seat ring through the groove and is fixed. The upper extended ring of the sealing ring body contacts and is fixed tightly with the manhole cover. When the inside of the kettle is in a vacuum, relying on the special structure of the sealing ring, it undergoes inward contraction and fits tightly with the surface of the manhole seat ring and the manhole cover, playing a self-sealing role, enabling the manhole device to achieve fixation and sealing effects, thereby solving the problem of vacuum leakage caused by the inward contraction of the flat sealing ring due to the vacuum inside the kettle. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a top view schematic diagram of the vacuum safety sealing ring for a series of high-efficiency transesterification reaction kettles of antioxidants proposed by the present utility model;

[0013] Figure 2 It is a sectional structure schematic diagram of the vacuum safety sealing ring for a series of high-efficiency transesterification reaction kettles of antioxidants proposed by the present utility model;

[0014] Figure 3 It is a bottom view structure schematic diagram of the vacuum safety sealing ring for a series of high-efficiency transesterification reaction kettles of antioxidants proposed by the present utility model.

[0015] Legend: 1. Upper extended ring; 2. Sealing surface; 3. Lower inner extended ring; 4. Lower outer extended ring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] In order to be able to more clearly understand the above-mentioned objects, features, and advantages of the present utility model, the following further describes the present utility model in conjunction with the drawings and embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0017] In the following description, many specific details are set forth in order to fully understand the present utility model. However, the present utility model can also be implemented in other ways different from those described herein. Therefore, the present utility model is not limited by the specific embodiments disclosed in the following specification.

[0018] Embodiment 1, as Figure 1 - Figure 3As shown in the figure, the present utility model provides a vacuum safety sealing ring for an efficient transesterification reactor of a series of antioxidants, including an upper extended ring 1. The outer side of the bottom of the upper extended ring 1 is provided with a lower outer extended ring 4, and the inner side of the bottom of the upper extended ring 1 is provided with a lower inner extended ring 3. A sealing surface 2 is provided on the outer surfaces of the upper extended ring 1 and the lower inner extended ring 3. A groove is provided between the lower inner extended ring 3 and the lower outer extended ring 4. Both the lower inner extended ring 3 and the lower outer extended ring 4 are circular or elliptical ring bodies, and the upper extended ring 1 is closely attached to the manhole cover.

[0019] The effect achieved by the entire embodiment 1 is that the vacuum safety sealing ring of the efficient transesterification reactor of the series of antioxidants of the present utility model is applied to a 1135 transesterification reactor. When a vacuum condition is required inside the reactor, under the action of the pressure difference between the inside and outside of the manhole cover, the sealing ring shrinks inward. Relying on the special structure of the inner and outer extended rings of the sealing ring, the upper extended ring 1 is closely attached to the outer edge of the manhole cover, and the lower inner extended ring 3 and the lower outer extended ring 4 are closely attached to the surface of the manhole seat ring to play a self-sealing role, enabling the manhole device to achieve a double-sealing effect. Therefore, it well solves the problem that the vacuum safety sealing ring of the series of antioxidants in the transesterification reactor leaks air due to displacement caused by the pressure difference, affecting the quality of the 1135 product, and makes the color of the produced 1135 colorless, clear and transparent.

[0020] Working principle: During use, the sealing ring is fixed on the manhole by using the manhole cover and screws. After closing the manhole cover, the sealing ring contacts and presses against the manhole seat ring through the groove and is fixed. The upper extended ring 1 of the sealing ring body is in close contact with and fixed to the manhole cover. When the inside of the kettle is in a vacuum, relying on the special structure of the sealing ring, it shrinks inward and is closely attached to the surface of the manhole seat ring and the manhole cover, playing a self-sealing role, enabling the manhole device to achieve a fixing and sealing effect, thus solving the problem that the flat sealing ring shrinks inward due to the vacuum inside the kettle, resulting in vacuum leakage.

[0021] The above is only a preferred embodiment of the present utility model, and does not limit the present utility model in other forms. Any person skilled in the art may use the disclosed technical content to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, as long as it does not depart from the technical solution content of the present utility model, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present utility model still fall within the protection scope of the technical solution of the present utility model.

Claims

1. Series antioxidant high-efficiency transesterification reaction kettle vacuum safety sealing ring, characterized in that, It includes an upper extended ring (1), a lower outer extended ring (4) is arranged on the outer side of the bottom of the upper extended ring (1), a lower inner extended ring (3) is arranged on the inner side of the bottom of the upper extended ring (1), and a sealing surface (2) is arranged on the outer surfaces of the upper extended ring (1) and the lower inner extended ring (3).

2. The high-efficiency transesterification reaction kettle vacuum safety sealing ring of the series of antioxidants according to claim 1, characterized in that: A groove is arranged between the lower inner extended ring (3) and the lower outer extended ring (4), and both the lower inner extended ring (3) and the lower outer extended ring (4) are circular rings or elliptical ring bodies.

3. The high-efficiency transesterification reactor vacuum safety sealing ring for the series of antioxidants according to claim 2, characterized in that: The upper extended ring (1) fits closely with the manhole cover.

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