阅读说明：本技术 一种高密封性超临界萃取反应釜 (High leakproofness supercritical fluid extraction reation kettle ) 是由 赵钟毓 陈之昊 于 2020-06-19 设计创作，主要内容包括：本发明涉及一种高密封性超临界萃取反应釜包括筒体和设置在筒体上端的端盖,所述筒体与端盖之间设置有卡箍,所述筒体与端盖之间还设置有密封环,所述密封环包括环本体、外挡环和内挡环,所述外挡环和内挡环分设在环本体的内外两侧,且两者之间形成上下两个环形插槽,所述端盖的下端和筒体的上端分别卡接在对应的插槽内,所述外挡环贴合在端盖与筒体的外壁上,所述内挡环贴合在端盖与筒体的内壁上,所述插槽内设置有密封圈。本发明通过在端盖与筒体之间设置密封环,保证端盖与筒体安装稳定,防止两者因内外压力变化发生位移而磨损密封圈,而且密封圈位于密封环与端盖和筒体,不与反应釜内的物质产生接触,不影响密封圈的密封性能。(The invention relates to a high-sealing supercritical extraction reaction kettle which comprises a barrel body and an end cover arranged at the upper end of the barrel body, wherein a clamp is arranged between the barrel body and the end cover, a sealing ring is also arranged between the barrel body and the end cover, the sealing ring comprises a ring body, an outer baffle ring and an inner baffle ring, the outer baffle ring and the inner baffle ring are respectively arranged at the inner side and the outer side of the ring body, an upper annular slot and a lower annular slot are formed between the outer baffle ring and the inner baffle ring, the lower end of the end cover and the upper end of the barrel body are respectively clamped in the corresponding slots, the outer baffle ring is attached to the outer walls of the end cover and the barrel body, the inner baffle ring is attached to the inner walls. The sealing ring is arranged between the end cover and the barrel body, so that the end cover and the barrel body are ensured to be stably installed, the sealing ring is prevented from being abraded due to displacement caused by internal and external pressure changes, and the sealing ring is positioned between the sealing ring and the end cover and the barrel body, does not contact with substances in the reaction kettle and does not influence the sealing performance of the sealing ring.)

1. The utility model provides a high leakproofness supercritical fluid extraction reation kettle, includes barrel (2) and end cover (1) of setting in barrel (2) upper end, be provided with clamp (4), its characterized in that between barrel (2) and end cover (1): still be provided with sealing ring (3) between barrel (2) and end cover (1), sealing ring (3) are including ring body (301), keep off ring (302) and interior fender ring (303) outward and set up at the inside and outside both sides of ring body (301) respectively, and two annular slots about forming between the two, the lower extreme of end cover (1) and the upper end difference joint of barrel (2) are in the slot that corresponds, keep off ring (302) laminating outward on the outer wall of end cover (1) and barrel (2), interior fender ring (303) laminating is on the inner wall of end cover (1) and barrel (2), be provided with the sealing washer in the slot.

2. The supercritical extraction reaction kettle with high sealing performance according to claim 1 is characterized in that: the sealing ring comprises a first sealing ring (5), a second sealing ring (6) and a third sealing ring (7), wherein the first sealing ring (5) is arranged between the lower end face of the end cover (1) and the ring body (301), the second sealing ring (6) is arranged between the upper end face of the barrel body (2) and the ring body (301), and the third sealing ring (7) is arranged between the inner wall of the inner baffle ring (303) and the end cover (1).

3. The supercritical extraction reaction kettle with high sealing performance according to claim 2 is characterized in that: the sealing ring (3) is screwed at the upper end of the cylinder body (2) through threads.

4. The supercritical extraction reaction kettle with high sealing performance according to claim 2 is characterized in that: one side of the inner baffle ring (303) facing the inner wall of the end cover (1) is provided with an annular clamping groove (304), and the third sealing ring (7) is clamped in the clamping groove (304).

5. The supercritical extraction reaction kettle with high sealing performance according to claim 4 is characterized in that: the third sealing ring (7) protrudes out of the inner baffle ring (303) in the radial direction, a notch corresponding to the clamping groove (304) is formed in the lower end of the end cover (1), a sealing installation area is formed between the notch and the clamping groove (304), and the third sealing ring (7) is arranged in the sealing installation area.

6. The supercritical extraction reactor with high sealing performance as claimed in claim 4 or 5, wherein: a thermal expansion ring (8) is arranged in the clamping groove (304), the thermal expansion ring (8) is sleeved on the inner blocking ring (303), and the third sealing ring (7) is sleeved on the outer side of the thermal expansion ring (8).

7. The supercritical extraction reaction kettle with high sealing performance according to claim 6 is characterized in that: an annular channel (305) for introducing cold and hot media is arranged in the sealing ring (3), the annular channel (305) is arranged in the inner baffle ring (303), the outer baffle ring (302) is provided with a medium inlet (307) and a medium outlet (308), and the medium inlet (307) and the medium outlet (308) are communicated with the annular channel (305).

8. The supercritical extraction reaction kettle with high sealing performance according to claim 6 is characterized in that: and a heat insulation ring is arranged between the third sealing ring (7) and the thermal expansion ring (8).

9. The supercritical extraction reaction kettle with high sealing performance according to claim 2 is characterized in that: a cavity (501) is formed in the first sealing ring (5), and a through hole (502) communicated with the cavity (501) is formed in the inner side face of the first sealing ring (5).

Technical Field

The invention relates to the technical field of extraction kettles, in particular to a high-tightness supercritical extraction reaction kettle.

Background

A supercritical fluid is a substance between the gas and liquid that is neither in the gaseous nor liquid state and can only exist when its temperature and pressure exceed critical points. The density of the supercritical fluid is larger, the supercritical fluid is similar to that of liquid, and the viscosity of the supercritical fluid is closer to that of gas, so the supercritical fluid is an ideal extracting agent, and the supercritical extraction is an extraction mode adopting the supercritical fluid as the extracting agent. Because the supercritical fluid can have a better form only under corresponding temperature and pressure, the supercritical fluid can be better extracted, and the requirement on the sealing performance of the supercritical extraction reaction kettle is higher.

Chinese utility model patent with publication number CN202418560U discloses a supercritical fluid dyeing kettle high pressure quick-opening sealing structure, including the barrel, fix the end cover in the barrel upper end, form an annular groove body between the bottom of barrel inner wall and end cover, be equipped with the U-shaped sealing washer that closely matches in the annular groove body, its shortcoming lies in, and this U-shaped sealing washer is located inside the dyeing kettle, receives the fluid influence easily and influences sealing performance.

Disclosure of Invention

The invention aims to provide a high-sealing supercritical extraction reaction kettle, which realizes reliable sealing of an end cover and a cylinder body.

The above object of the present invention is achieved by the following technical solutions: the utility model provides a high leakproofness supercritical fluid extraction reation kettle, includes barrel and the end cover of setting in the barrel upper end, be provided with the clamp between barrel and the end cover, still be provided with the sealing ring between barrel and the end cover, the sealing ring includes ring body, outer fender ring and interior fender ring divide establish the inside and outside both sides at ring body, and two annular slots about forming between the two, the lower extreme of end cover and the upper end of barrel joint respectively in the slot that corresponds, keep off the ring laminating outward on the outer wall of end cover and barrel, interior fender ring laminating is on the inner wall of end cover and barrel, be provided with the sealing washer in the slot.

Preferably, the sealing ring comprises a first sealing ring, a second sealing ring and a third sealing ring, the first sealing ring is arranged between the lower end face of the end cover and the ring body, the second sealing ring is arranged between the upper end face of the cylinder body and the ring body, and the third sealing ring is arranged between the inner baffle ring and the inner wall of the end cover.

Preferably, the sealing ring is screwed on the upper end of the cylinder body through threads.

Preferably, one side of the inner baffle ring facing the inner wall of the end cover is provided with an annular clamping groove, and the third sealing ring is clamped in the clamping groove.

Preferably, the third sealing ring protrudes out of the inner baffle ring in the radial direction, a notch corresponding to the clamping groove is formed in the lower end of the end cover, a sealing installation area is formed between the notch and the clamping groove, and the third sealing ring is arranged in the sealing installation area.

Preferably, a thermal expansion ring is arranged in the clamping groove, the thermal expansion ring is sleeved on the inner baffle ring, and the third sealing ring is sleeved on the outer side of the thermal expansion ring.

Preferably, an annular channel for introducing cold and hot media is arranged in the sealing ring, the annular channel is arranged in the inner baffle ring, the outer baffle ring is provided with a medium inlet and a medium outlet, and the medium inlet and the medium outlet are communicated with the annular channel.

Preferably, a heat insulation ring is arranged between the third sealing ring and the thermal expansion ring.

Preferably, a cavity is formed in the first sealing ring, and a through hole communicated with the cavity is formed in the inner side surface of the first sealing ring.

The invention has the beneficial effects that: the sealing ring is arranged between the end cover and the barrel body, so that the end cover and the barrel body are ensured to be stably installed, the sealing ring is prevented from being abraded due to displacement caused by internal and external pressure changes, and the sealing ring is positioned between the sealing ring and the end cover and the barrel body, does not contact with substances in the reaction kettle and does not influence the sealing performance of the sealing ring.

Drawings

FIG. 1 is a schematic structural view of embodiment 1 of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is a schematic cross-sectional view of a seal ring in example 1 of the present invention;

FIG. 4 is a partially enlarged view of embodiment 2 of the present invention;

FIG. 5 is a schematic plan view of a seal ring in embodiment 2 of the invention;

FIG. 6 is a schematic cross-sectional view of a seal ring in example 2 of the present invention;

FIG. 7 is a schematic cross-sectional view of a first seal ring in embodiment 2 of the present invention;

in the figure: 1-end cap, 101-upper clamping edge, 2-barrel, 201-lower clamping edge, 3-sealing ring, 301-ring body, 302-outer retaining ring, 303-inner retaining ring, 304-clamping groove, 305-annular channel, 306-connecting channel, 307-medium inlet, 308-medium outlet, 4-clamping hoop, 5-first sealing ring, 501-cavity, 502-through hole, 6-second sealing ring, 7-third sealing ring and 8-thermal expansion ring.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.