Sealed vacuum detachable extraction device

Abstract

A sealed vacuum detachable extraction device, comprising a first container (10), a second container (20), a filter member (30), and an end cover (40). The device is suitable for coffee powder and tea powder extraction. An extraction material and a liquid are poured into a liquid tank (22) of the second container (20), and air is evacuated outwards via an air extraction hole (41), so that the air pressure in a chamber (11) is lower than the air pressure in the liquid tank (22). Due to the pressure difference, the liquid is accelerated through the extraction material and then passes through a filtering structure (31) to enter the chamber (11), while the extraction material is blocked by the filtering structure (31) and cannot pass through. The negative pressure accelerates the extraction speed, greatly improving extraction efficiency. The end cover (40) is provided at the upper end of the second container (20), and covers an open end of the liquid tank (22) to achieve sealing and freshness preservation, allowing a user to conveniently place the entire sealed vacuum detachable extraction device into a refrigerator for cold extraction.

Description

A sealed vacuum detachable extraction device Technical Field

[0001] The utility model relates to the technical field of extraction devices, in particular to a sealed vacuum detachable extraction device. Background Art

[0002] Extraction, also known as solvent extraction or liquid-liquid extraction, is a unit operation that uses the different solubilities of components in the system to separate mixtures. Extraction is a method of transferring solute substances from one solvent to another by utilizing the difference in solubility or distribution coefficient of substances in two immiscible (or slightly soluble) solvents. Extraction is one of the means used to purify and purify compounds in organic chemistry laboratories. Through extraction, the required substances can be extracted from solid or liquid mixtures.

[0003] Extraction devices are commonly used in coffee machines, performing either hot or cold extraction on ground coffee. Hot extraction involves adding hot water to ground coffee. This process accelerates extraction, but hot water can break down the tannins in the coffee, affecting the taste. Cold extraction involves soaking ground coffee in cold water before extraction. Because the ground coffee doesn't come into direct contact with hot water, the tannins in the coffee are virtually completely unbroken, resulting in a particularly pure, smooth, and acid-free taste. Therefore, cold extraction is often preferred by users who prioritize a superior taste.

[0004] The extraction device is a relatively important machine for cold extraction of coffee. For conventional coffee cold extraction devices, reference can be made to an extraction mechanism of a coffee machine disclosed in Chinese Patent Publication No. CN104510351A, which includes a support plate, a rotating bracket, a positioning ring and an oil cylinder arranged in sequence from bottom to top, wherein an extraction chamber is provided on the rotating bracket, a positioning ring return spring is pressed on the lower end of the positioning ring, a clamping ring and a clamping ring return spring are provided at the upper end of the extraction chamber, a pair of hooks are provided on the clamping ring, a top block is provided on the outer side wall of the clamping ring, a bayonet matching the hook is provided on the positioning ring, a rotating ejector matching the top block is provided on the supporting plate, and a rotating ejector return torsion spring is provided on the rotating ejector. The rotating ejector can simultaneously push open the cooperation between the hook and the bayonet during the rotation and opening of the rotating bracket, so that the positioning ring is reset upward to its initial state under the action of the positioning ring return spring.

[0005] The above-mentioned extraction mechanism adopts a complex structure including a support plate, a rotating bracket, a positioning ring and an oil cylinder, which makes it difficult to disassemble and clean. On the other hand, cold extraction of coffee takes a long time. Conventional extraction devices usually need to be covered with a protective film on the open end to achieve the effect of sealing and preserving the coffee in order to facilitate cold extraction in the refrigerator.

[0006] Therefore, the existing technology still needs to be improved and developed.

[0007] Utility Model Content

[0008] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a sealed vacuum detachable extraction device to solve the problems of the prior art extraction device being difficult to dismantle and clean and unable to be sealed and preserved.

[0009] A sealed vacuum detachable extraction device, comprising:

[0010] a first container having a chamber for storing a liquid;

[0011] A second container is detachably mounted on the upper end of the first container, and has an air extraction channel and a liquid tank for extraction that pass through the upper and lower parts, wherein the air extraction channel and the liquid tank are both connected to the chamber;

[0012] a filter element, detachably mounted on the inner side of the second container, the filter element having a filtering structure, the filtering structure being located at the bottom of the liquid tank;

[0013] an end cap detachably mounted on the upper end of the second container, the end cap being provided with an air extraction hole, the air extraction hole being in communication with the air extraction channel;

[0014] The vacuum generator is detachably mounted on the upper end of the end cover, with the exhaust end facing the exhaust hole. The exhaust hole, the exhaust channel, and the chamber are sequentially connected from top to bottom to form a gas flow channel.

[0015] Specifically, a first sealing structure is provided between the vacuum generator and the end cover.

[0016] Specifically, a second sealing structure is provided between the air extraction channel and the end cover.

[0017] Specifically, a third sealing structure is provided between the first container and the second container.

[0018] Specifically, the diverter further includes an inner cover, which includes a hood and a sleeve connected to the middle of the upper end of the hood, and the upper end of the sleeve is communicated with the air extraction channel.

[0019] Specifically, the sealed vacuum detachable extraction device also includes a water outlet structure. When the air pressure in the chamber is lower than the air pressure in the liquid tank, the liquid in the liquid tank flows to the diverter through the water outlet structure, and after being diverted by the diverter, it flows into the chamber.

[0020] Specifically, the water outlet structure includes a one-way valve.

[0021] Specifically, the sealed vacuum detachable extraction device further includes a diverter, which is detachably mounted on the bottom of the second container and is used to divert the liquid flowing down from the liquid tank.

[0022] Specifically, the diverter includes:

[0023] The main body has a downwardly concave guide groove at the upper end;

[0024] There are two guide baffles, and a first guide channel for diversion is formed between the two guide baffles. Each guide baffle forms a second guide channel by itself that is connected to the first guide channel and diverts the flow inward. A drain hole is provided at the lower end of the middle part of the second guide channel.

[0025] Beneficial effects of the utility model:

[0026] The sealed vacuum detachable extraction device of the present invention is suitable for extracting coffee powder, tea powder, etc., wherein the extract and liquid are poured into the liquid tank of the second container, and air is pumped outwards through the air pumping hole, so that the air pressure in the chamber is lower than the air pressure in the liquid tank. Due to the influence of the pressure difference, the liquid is accelerated to pass through the extract and then enters the chamber through the filtering structure, while the extract is blocked by the filtering structure and cannot pass through. The extraction speed is accelerated by the negative pressure, and the extraction efficiency is greatly improved; an end cover is provided at the upper end of the second container, and the open end of the liquid tank is covered by the end cover to achieve the effect of sealing and preserving freshness, so that the user can put the entire sealed vacuum detachable extraction device into the refrigerator for cold extraction. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] FIG1 is a cross-sectional structural diagram of a sealed vacuum detachable extraction device according to Example 1;

[0028] FIG2 is a cross-sectional structural diagram of a sealed vacuum detachable extraction device according to Example 2;

[0029] FIG3 is a cross-sectional structural diagram of the sealed vacuum detachable extraction device of Example 2 after being disassembled along the axis;

[0030] FIG4 is a cross-sectional structural diagram of the second container and the filter element after being assembled in Example 2;

[0031] FIG5 is a cross-sectional structural diagram of the second container and the filter element after being assembled in Example 3;

[0032] FIG6 is a cross-sectional structural diagram of the second container of Example 4, wherein the water outlet structure adopts a water outlet hole and an I-shaped valve;

[0033] FIG7 is a cross-sectional structural diagram of the first container of Example 5, in which the first container is a conical container;

[0034] FIG8 is a perspective view of the diverter of Example 2;

[0035] FIG9 is a top view of the flow dividing member of Example 2, in which the dotted arrow indicates the direction of liquid flow;

[0036] FIG10 is a cross-sectional view of the AA plane in FIG9;

[0037] FIG11 is a cross-sectional structural diagram of the end cap, second container, filter element, inner cover and diverter element of Example 6 after assembly;

[0038] FIG12 is a perspective view of the inner cover and the diverter member of Example 6 after separation;

[0039] FIG13 is a top view of the diverter of Example 6;

[0040] FIG14 is a cross-sectional structural diagram of the end cap, second container, filter element and diverter element after assembly in Example 7;

[0041] FIG15 is a top view of the diverter of Example 7. FIG.

[0042] The accompanying drawings are marked as follows: first container 10, chamber 11, second container 20, air extraction channel 21, liquid tank 22, filter element 30, filter structure 31, end cover 40, air extraction hole 41, vacuum generator 50, annular sealant 51, diverter 60, body 61, guide groove 611, water hole 612, arc baffle 62, partition 63, mounting portion 64, water outlet structure 70, water outlet nozzle 71, one-way back pressure valve 72, water outlet hole 73, I-shaped valve 74, third sealing structure 90, second sealing structure 80, gap 42, limiting groove 43, lower extension portion 81, first annular groove 82, elastic sealing ring 83, elastic mounting Entrance 84, second annular groove 85, annular block 86, third annular groove 91, elastic sealing ring 92, cover body 32, first annular shell 87, first through hole 321, first O-ring 93, third annular groove 94, second O-ring 95, fourth annular groove 96, inner cover 100, cover 101, sleeve 102, first tube body 66, guide baffle 67, first guide channel 671, second guide channel 672, elastic mounting portion 23, second annular shell 88, second through hole 231, third O-ring 97, fifth annular groove 98, second tube body 69, S-shaped baffle 613, third guide channel 673. DETAILED DESCRIPTION

[0043] The present invention provides a sealed vacuum detachable extraction device. To make the purpose, technical solution, and effects of the present invention more clear and explicit, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific examples described herein are only intended to illustrate the present invention and are not intended to limit the present invention.

[0044] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0045] Example 1

[0046] Referring to FIG. 1 , this embodiment discloses a sealed vacuum detachable extraction device, comprising:

[0047] A first container 10 having a chamber 11 for storing liquid;

[0048] The second container 20 is detachably mounted on the upper end of the first container 10 and has an exhaust passage 21 and a liquid tank 22 for extraction, both of which are in communication with the chamber 11.

[0049] The filter element 30 is detachably mounted on the inner side of the second container 20 . The filter element 30 has a filter structure 31 . The filter structure 31 is located at the bottom of the liquid tank 22 .

[0050] The end cover 40 is detachably mounted on the upper end of the second container 20 . The end cover 40 is provided with an air extraction hole 41 , which is in communication with the air extraction channel 21 .

[0051] The vacuum generator 50 is detachably mounted on the upper end of the end cover 40 , with the exhaust end facing the exhaust hole 41 . The exhaust hole 41 , the exhaust channel 21 , and the chamber 11 are sequentially connected from top to bottom to form a gas flow channel.

[0052] The sealed vacuum detachable extraction device of this embodiment is suitable for extracting coffee powder, tea powder, etc., wherein the extract (e.g., coffee powder, tea powder, etc.) is poured into the liquid tank 22 of the second container 20, and then a liquid (e.g., water, milk, etc.) in an appropriate proportion is poured into the extract. After the two are poured in, the extract is deposited at the bottom, and air is evacuated outward through the air extraction hole 41, so that the air pressure in the chamber 11 is lower than the air pressure in the liquid tank 22. Due to the pressure difference, the liquid is accelerated to pass through the extract and then enter the chamber 11 through the filter structure 31. The extract is blocked by the filter structure 31 and cannot pass through. The extraction speed is accelerated by the negative pressure, and the extraction efficiency is greatly improved.

[0053] In the sealed vacuum detachable extraction device of this embodiment, an end cap 40 is provided at the upper end of the second container 20. The end cap 40 covers the open end of the liquid tank 22 to achieve a sealed and fresh-keeping effect, making it convenient for the user to place the entire sealed vacuum detachable extraction device in a refrigerator for cold extraction.

[0054] In the sealed vacuum detachable extraction device of this embodiment, the vacuum generator 50 is detachably mounted on the upper end of the end cover 40, with the exhaust end facing the exhaust hole 41. After the vacuum generator 50 is started, the exhaust hole 41 is exhausted. Since the exhaust hole 41 is connected to the exhaust channel 21, and the exhaust channel 21 is connected to the chamber 11, the pressure in the chamber 11 can be reduced, so that the air pressure in the chamber 11 is lower than the air pressure in the liquid tank 22, and the extraction speed of the liquid to be extracted is accelerated by the negative pressure.

[0055] Example 2

[0056] 2, 3, 4, 8, 9, and 10, the sealed vacuum detachable extraction device provided in this embodiment includes all the technical features of Example 1, and compared with Example 1, further has the following structure:

[0057] The bottom of the vacuum generator 50 has a downwardly protruding contact end. In order to improve the fit between the vacuum generator 50 and the end cover 40, this embodiment provides a limiting groove 43 at the upper end of the end cover 40 to match the bottom of the vacuum generator 50, and the exhaust hole 41 is provided at the bottom of the limiting groove 43. When the user puts down the vacuum generator 50, he can intuitively feel that the alignment is completed, which provides a good user experience.

[0058] In addition, in order to improve the sealing performance of the vacuum generator 50 and the end cover 40, a first sealing structure is provided between the vacuum generator 50 and the end cover 40 of this embodiment. The first sealing structure is an annular sealant 51. An elastic annular sealant 51 is sleeved on the lower edge of the vacuum generator 50. The annular sealant 51 can be made of elastomeric materials such as silicone and rubber, preferably food-grade elastomeric materials. It is fixed to the lower edge of the vacuum generator 50 by connecting methods such as ring sleeves, bonding, and hot melt connection. Its size is adapted to the size of the limiting groove 43. When the vacuum generator 50 is placed in the limiting groove 43, due to the gravity of the vacuum generator 50 itself, the sealing gasket fits against the inner wall of the limiting groove 43, so that the junction between the two is sealed and connected, avoiding gas leakage and achieving lock-free self-sealing.

[0059] It should be noted that the vacuum generator 50 used as the negative pressure generator in this embodiment is only a preferred embodiment. In other embodiments, an air nozzle can be provided on the air exhaust hole 41, which is connected to other devices that can generate negative pressure through an air duct. It is not limited to the vacuum generator 50 in this embodiment. These equivalent variations or replacements are all included in the scope defined by the claims of the invention.

[0060] In addition, in order to balance the air pressure of the liquid tank 22 and the outside world, so that the liquid in the liquid tank 22 is difficult to flow down, a gap 42 can be set between the end cover 40 and the inner wall of the liquid tank 22, and the formation of the gap 42 can be achieved by adjusting the size of the end cover 40 or the liquid tank 22; the use of the gap 42 is a means, and in a foreseeable solution, it can also be achieved by opening a hole on the periphery of the end cover 40 or the upper side wall of the liquid tank 22 to balance the air pressure of the liquid tank 22 and the outside world.

[0061] During the extraction process, due to the negative pressure, the liquid flows down from the liquid tank 22 faster, resulting in uneven mixing of the liquid and the extracted matter. Based on this, please refer to Figures 2 and 3. The sealed vacuum detachable extraction device of this embodiment also includes a diverter 60. The diverter 60 is detachably installed at the bottom of the second container 20. The diverter 60 diverts the liquid flowing down the liquid tank 22, thereby extending the flow path of the liquid and the extracted matter and improving the mixing effect of the liquid and the extracted matter.

[0062] 8, 9 and 10, the flow divider 60 of this embodiment includes a body 61, an arc-shaped baffle 62 and a partition 63, wherein:

[0063] The upper end of the body 61 has a downwardly concave guide groove 611. The liquid outlet at the bottom of the liquid tank 22 is located above the outer periphery of the guide groove 611. After the liquid flows down the guide groove 611, it can spiral downward along the guide groove 611 (vortex effect), further improving the mixing effect of the liquid and the extract.

[0064] There are four arc-shaped baffles 62 distributed in a circular array in the middle of the guide groove 611. Two downward-penetrating water holes 612 are provided in the area formed by the arc-shaped baffles 62. The intersection of the two arc-shaped baffles 62 forms an opening for liquid to flow in. After the liquid flows through the opening, part of the liquid can flow along the inner wall of the arc-shaped baffle 62, playing an effective diversion and diversion role.

[0065] The partition 63 is arranged in the middle of the guide groove 611. The middle part of the partition 63 is a truncated cone structure, and the two ends extend to the intersection of the two arc-shaped baffles 62, which is used to divide the area formed by the arc-shaped baffles 62 into two diversion areas. A drain hole 612 is correspondingly arranged in a diversion area to improve the dispersion effect of the liquid.

[0066] In addition, the diverter 60 of this embodiment also includes a mounting portion 64, the lower end of the mounting portion 64 is integrally connected to the main body 61, and the upper end is snap-connected to the second container 20. Specifically, a card slot is provided on the mounting portion 64, and a card block matching the card slot is provided at the bottom of the second container 20. The snap-fit ​​combination of the two facilitates the disassembly and assembly of the diverter 60.

[0067] It should be noted that the snap-fit ​​connection method used in this embodiment to install the diverter 60 is only a preferred implementation method. In other embodiments, screw fixation, threaded connection, butt connection, sleeve connection, etc. can also be used, and it is not limited to the snap-fit ​​connection of this embodiment.

[0068] The cold extraction process of some extracts (such as coffee powder, tea powder, etc.) requires soaking for a period of time before negative pressure extraction. When the extract and liquid are poured into the liquid tank 22, if a conventional straight-through water outlet is used, the liquid will quickly flow into the chamber 11 through the water outlet, and a long soaking process is not obtained.

[0069] Based on the problems caused by the above-mentioned straight-through water outlet, please refer to Figures 2 and 3. In this embodiment, a water outlet structure 70 is provided at the bottom of the liquid tank 22. When the air pressure in the chamber 11 is lower than the air pressure in the liquid tank 22, the liquid in the liquid tank 22 flows to the diverter 60 through the water outlet structure 70. After being diverted by the diverter 60, it flows into the chamber 11. Through such a setting, the liquid in the liquid tank 22 cannot flow naturally into the chamber 11, ensuring that the extract and the liquid can have a sufficient soaking time, thereby improving the extraction effect.

[0070] Further, please refer to Figure 4. The water outlet structure 70 of this embodiment includes a water outlet hole 73 provided at the bottom of the liquid tank 22 and a one-way valve connected to the water outlet hole 73, specifically an I-shaped valve 74. The water outlet hole 73 is a waist hole, and the I-shaped valve 74 is a structure with a small top and a large bottom. The upper part of the I-shaped valve 74 is used to buckle the bottom of the liquid tank 22, and the lower part of the I-shaped valve 74 is made of flexible material. In the natural state, it flexibly abuts against the bottom of the second container 20 and completely closes the lower end of the water outlet hole 73. When the air pressure in the chamber 11 is lower than the air pressure in the liquid tank 22, the lower part of the I-shaped valve 74 is compressed and deformed, so that the lower channel of the water outlet hole 73 is opened, and the liquid in the liquid tank 22 can flow down through the water outlet hole 73. The structure is ingenious.

[0071] Of course, the above-mentioned water outlet structure 70 using the water outlet hole 73 and the I-shaped valve 74 is only a preferred implementation method. In other embodiments, the water outlet structure 70 can also use valve structures such as electric valves and pneumatic valves, and is not limited to the combined structure of the water outlet hole 73 and the I-shaped valve 74. These equivalent variations or replacements are all included in the scope defined by the claims of the present invention.

[0072] Please refer to Figure 4. A second sealing structure 80 is provided between the exhaust channel 21 and the end cover 40. The second sealing structure 80 includes a lower extension portion 81 connected to the middle part of the lower end of the end cover 40, a first annular groove 82 formed on the outer side of the lower extension portion 81, and an elastic sealing ring 83 sleeved in the first annular groove 82. The lower extension portion 81 can be installed into the inner top end of the exhaust channel 21, and sealing is achieved by the elastic sealing ring 83 to prevent gas leakage.

[0073] It should be noted that the sealing method of the lower extension part 81 and the elastic sealing ring 83 adopted in the above-mentioned second sealing structure 80 is only a preferred implementation method. In other embodiments, detachable sealing connection methods such as threaded connection, mosaic connection, and serrated connection can also be adopted. These equivalent variations or replacements are all included in the scope defined by the claims of the invention of this utility model.

[0074] Please refer to Figure 4. In this embodiment, a third sealing structure 90 is provided between the first container 10 and the second container 20. The third sealing structure 90 includes a third annular groove 91 formed on the outer side of the bottom of the second container 20 and an elastic sealing ring 92 sleeved on the third annular groove 91. The lower end of the first container 10 can be vertically inserted into the open end of the second container 20. After insertion, the elastic sealing ring 92 realizes sealing to prevent gas leakage during vacuuming.

[0075] Example 3

[0076] Please refer to Figure 4. The difference between this embodiment and Example 2 is that the second sealing structure 80 of this embodiment includes an elastic loading portion 84 connected to the middle part of the lower end of the end cover 40, a second annular groove 85 formed on the outer side wall of the elastic loading portion 84, and an annular clamping block 86 fixed to the inner wall of the exhaust channel 21. The elastic loading portion 84 is made of elastic material, which can be deformed under pressure and can be installed in the inner top of the exhaust channel 21. The annular clamping block 86 is used to clamp the second annular groove 85 to achieve a sealed connection and prevent gas leakage.

[0077] Example 4

[0078] Please refer to Figure 6. The difference between this embodiment and Example 2 is that the water outlet structure 70 of this embodiment includes a water outlet nozzle 71 arranged at the bottom of the liquid tank 22, and a one-way valve mounted on the lower end of the water outlet nozzle 71, specifically a one-way back pressure valve 72. The one-way back pressure valve 72 is made of flexible material. When the air pressure in the chamber 11 is lower than the air pressure in the liquid tank 22, the one-way back pressure valve 72 opens, so that the liquid in the liquid tank 22 can flow down through the water outlet nozzle 71 and the one-way back pressure valve 72 in sequence. The structure is ingenious.

[0079] Of course, the above-mentioned water outlet structure 70 using the water outlet nozzle 71 and the one-way back pressure valve 72 is only a preferred implementation method. In other embodiments, the water outlet structure 70 can also use valve structures such as electric valves and pneumatic valves, and is not limited to the combined structure of the water outlet nozzle 71 and the one-way back pressure valve 72. These equivalent variations or replacements are all included in the scope defined by the claims of the invention.

[0080] Example 5

[0081] As shown in FIG. 7 , the first container 10 of this embodiment adopts a conical structure, has a handle, and has a bottom pad provided at the bottom for better stability.

[0082] Example 6

[0083] Please refer to Figure 11. The filter element 30 used in this embodiment has a cylindrical cover body 32 in the middle, and the filtering structure 31 is connected to the lower end of the cover body 32. The cover body 32 completely covers the middle cylindrical frame of the second container 20, and the middle part of the lower end of the end cover 40 is connected to the first annular shell 87. The first annular shell 87 is assembled with the upper end of the cover body 32. Therefore, in order to achieve the connection between the exhaust hole 41 and the exhaust channel 21, this embodiment opens a first through hole 321 on the upper end side wall of the cover body 32. Of course, in other embodiments, the first through hole 321 can also be opened at the top of the cover body 32, and the gas is conducted through the first through hole 321 during exhaust.

[0084] In the above structure, since the second container 20 and the filter element 30 are fitted together through a sleeve connection, there will be a certain gap between the cylindrical frame in the middle of the second container 20 and the cover body 32 of the filter element 30. In order to improve the sealing performance of this position, this embodiment provides a fourth sealing structure between the second container 20 and the filter element 30. The fourth sealing structure includes a first O-ring 93 and a third annular groove 94. The third annular groove 94 is opened on the outer side of the cylindrical frame in the middle of the second container 20, and the first O-ring 93 is sleeved in the third annular groove 94. When the cover body 32 is installed, the gap is blocked by the first O-ring 93 to achieve sealing.

[0085] In addition, there will be a certain gap between the upper end of the cover body 32 and the first annular shell 87. In order to improve the sealing performance of this position, this embodiment provides a fifth sealing structure between the cover body 32 and the first annular shell 87. The fifth sealing structure includes a second O-ring 95 and a fourth annular groove 96. The fourth annular groove 96 is opened on the outside of the cover body 32, and the second O-ring 95 is sleeved in the fourth annular groove 96. When the first annular shell 87 is installed, the gap is blocked by the second O-ring 95 to achieve sealing.

[0086] Please refer to Figures 11 to 13. This embodiment uses an inner cover 100 to cooperate with the diverter 60. The inner cover 100 includes a cover 101 and a sleeve 102 connected to the middle of the upper end of the cover 101. The upper end of the sleeve 102 is connected to the air extraction channel 21, and the water outlet structure 70 is installed on the cover 101; the diverter 60 includes a body 61, a first tube body 66 connected to the middle of the body 61 and extending upward, and two guide baffles 67 distributed on the periphery of the first tube body 66. A second guide baffle 67 for diverting water is formed between the two guide baffles 67. A guide channel 671, and each guide baffle 67 forms a second guide channel 672 by itself that is connected to the first guide channel 671 and guides the fluid inward. A drain hole 612 is provided at the lower middle end of the second guide channel 672. After the liquid passes through the water outlet structure 70 and flows down the first guide channel 671, it can flow into the second guide channel 672 along the first guide channel 671, forming a vortex effect in the second guide channel 672, further improving the mixing effect of the liquid and the extracted substance, and finally flows out through the drain hole 612.

[0087] Example 7

[0088] Please refer to Figure 14. An elastic mounting portion 23 is provided at the top of the middle cylindrical frame of the second container 20 used in this embodiment. The elastic mounting portion 23 passes through the middle cylindrical frame of the filtering structure 31. The middle part of the lower end of the end cover 40 is connected to a second annular shell 88. The second annular shell 88 and the elastic mounting portion 23 are assembled along the axis. Of course, in order to achieve the connection between the exhaust hole 41 and the exhaust channel 21, this embodiment opens a second through hole 231 on the upper end side wall of the elastic mounting portion 23. Of course, in other embodiments, the second through hole 231 can also be opened at the top of the elastic mounting portion 23. When exhausting, the gas is conducted through the first through hole 321.

[0089] In the above structure, the second container 20 and the filter element 30 are fitted together by sleeve connection. There will be a certain gap between the cylindrical frame in the middle of the second container 20 and the cover body 32 of the filter element 30. In order to improve the sealing performance of this position, this embodiment provides a fourth sealing structure between the second container 20 and the filter element 30. The fourth sealing structure includes a first O-ring 93 and a third annular groove 94. The third annular groove 94 is opened on the outer side of the cylindrical frame in the middle of the second container 20, and the first O-ring 93 is sleeved in the third annular groove 94. When the cover body 32 is installed, the gap is blocked by the first O-ring 93 to achieve sealing.

[0090] In addition, there will be a certain gap between the upper end of the elastic mounting portion 23 and the second annular shell 88. In order to improve the sealing performance of this position, this embodiment provides a sixth sealing structure between the elastic mounting portion 23 and the second annular shell 88. The sixth sealing structure includes a third O-ring 97 and a fifth annular groove 98. The fifth annular groove 98 is provided on the outer side of the cover body 32, and the third O-ring 97 is sleeved in the fifth annular groove 98. When the second annular shell 88 is installed, the gap is blocked by the third O-ring 97 to achieve sealing.

[0091] Please refer to Figures 14 and 15. The diverter 60 used in this embodiment includes a main body 61, a second tube body 69 connected to the middle of the main body 61 and extending upward, and two arc-shaped baffles 62 and four S-shaped baffles 613 distributed on the periphery of the second tube body 69. The opposite sides of the two arc-shaped baffles 62 are provided with water holes 612, and every two S-shaped baffles 613 cooperate to form a trumpet-shaped third guide channel 673. After the liquid passes through the water outlet structure 70 and flows down the third guide channel 673, it can gradually narrow along the third guide channel 673 and flow into the front side of the two arc-shaped baffles 62, and is guided by the two arc-shaped baffles 62 to form a vortex effect, further improving the mixing effect of the liquid and the extracted matter, and finally flows out through the water holes 612.

[0092] The above specifically describes the preferred embodiments of the present invention, but the present invention is not limited to the embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of the present invention.

Claims

1. A sealed vacuum detachable extraction device, characterized in that, Comprising: A first container (10) having a chamber (11) for storing liquid; A second container (20) detachably mounted on the upper end of the first container (10), having an air extraction channel (21) penetrating up and down and a liquid tank (22) for extraction, and both the air extraction channel (21) and the liquid tank (22) are communicated with the chamber (11); A filter element (30) detachably mounted inside the second container (20), the filter element (30) having a filtering structure (31), and the filtering structure (31) is located at the bottom of the liquid tank (22); An end cap (40) detachably mounted on the upper end of the second container (20), and an air extraction hole (41) is provided on the end cap (40), and the air extraction hole (41) is communicated with the air extraction channel (21); A vacuum generator (50) detachably mounted on the upper end of the end cap (40), and the air extraction end faces the air extraction hole (41), and the air extraction hole (41), the air extraction channel (21), and the chamber (11) are communicated in sequence from top to bottom to form a gas circulation channel.

2. The sealed vacuum detachable extraction device according to claim 1, wherein, A first sealing structure is provided between the vacuum generator (50) and the end cap (40).

3. A sealed vacuum detachable extraction device according to claim 1, characterized in that, A second sealing structure (80) is provided between the air extraction channel (21) and the end cap (40).

4. A sealed vacuum detachable extraction device according to claim 1, characterized in that, A third sealing structure (90) is provided between the first container (10) and the second container (20).

5. A sealed vacuum detachable extraction device according to claim 1, characterized in that, The sealed vacuum detachable extraction device further includes a water outlet structure (70). When the air pressure in the chamber (11) is lower than the air pressure in the liquid tank (22), the liquid in the liquid tank (22) flows into the chamber (11) through the water outlet structure (70).

6. The sealed vacuum detachable extraction device according to claim 5, characterized in that, The water outlet structure (70) includes a check valve.

7. A sealed vacuum detachable extraction device according to claim 1, characterized in that, The sealed vacuum detachable extraction device further includes a flow divider (60), and the flow divider (60) is detachably mounted at the bottom of the second container (20) for dividing the liquid flowing down from the liquid tank (22).

8. A sealed vacuum detachable extraction device according to claim 7, characterized in that, The flow divider (60) includes: A body (61) having a downwardly concave diversion groove (611) at the upper end; There are two diversion baffles (67). A first diversion channel (671) for diversion is formed between the two diversion baffles (67). Each diversion baffle (67) forms a second diversion channel (672) that is communicated with the first diversion channel (671) and diverts inward, and a water outlet hole (612) is provided at the lower end of the middle part of the second diversion channel (672).

9. The sealed vacuum detachable extraction device according to claim 8, characterized in that, The flow divider (60) further includes an inner cover (100), and the inner cover (100) includes a cover (101) and a sleeve (102) connected to the middle of the upper end of the cover (101), and the upper end of the sleeve (102) is communicated with the air extraction channel (21).

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