CN118716846B - A vacuum extraction device - Google Patents

Abstract

The invention relates to the technical field of extraction devices, and specifically discloses a vacuum extraction device suitable for extracting coffee powder, tea powder and the like. When in use, the end cover is first opened, and an extract is poured into a liquid tank of a second container, and then a liquid in an appropriate proportion is poured. After the two are poured in, the extract is deposited at the bottom, and then the end cover is covered, and a vacuum generator is placed on the upper end of the end cover. The vacuum generator is started, and since the pressure of the liquid tank is lower than the pressure of the liquid storage chamber, a first one-way valve is opened, so that an air extraction hole, a liquid tank, an air channel and a liquid storage chamber are connected in sequence, and the vacuuming effect of the vacuum generator is utilized so that the liquid tank and the liquid storage chamber can be in a vacuum state, thereby improving the extraction effect of the liquid in the liquid tank on the extract.

Description

Vacuum extraction device

Technical Field

The invention relates to the technical field of extraction devices, in particular to a vacuum extraction device.

Background

Extraction, also known as solvent extraction or liquid-liquid extraction, is a unit operation that utilizes the differential solubility of components of a system in solvents to separate a mixture, and extraction is a process that utilizes the difference in solubility or partition coefficient of a substance in two mutually immiscible (or slightly soluble) solvents to transfer a solute substance from one solvent to another, and extraction is one of the means used in organic chemistry laboratories to purify and purify a compound by which the desired substance can be extracted from a solid or liquid mixture.

The extraction device is widely applied to a coffee machine to carry out hot extraction or cold extraction on coffee powder, wherein the hot extraction is to soak the coffee powder by hot water through the crushed coffee powder heating water, so as to accelerate the extraction, but the hot water soaking coffee can decompose tannins in the coffee, so that the taste is affected. Cold extraction is to soak ground coffee powder with cold water and then extract the ground coffee powder, and in the process, the tannins in the ground coffee powder are almost not decomposed due to the fact that the ground coffee powder is not contacted with direct hot water, so that the taste is particularly pure and smooth, and no sour taste exists, and therefore, cold extraction is usually adopted for users who seek the taste.

The extraction device is an important machine for extracting coffee, and the conventional coffee extraction device can refer to a vacuum extraction type coffee brewing container structure disclosed in Chinese patent publication No. CN201899357U, and mainly comprises a container body, a filter cup, a check valve and an air extraction device.

Above-mentioned vacuum extraction formula coffee dashes and steep container structure can accelerate liquid through filter bowl effect through air exhaust device, but the filter bowl upper end is open, does not possess sealed fresh-keeping effect, extracts under the ordinary pressure moreover, and extraction efficiency is lower.

Accordingly, the prior art is still in need of improvement and development.

Disclosure of Invention

In view of the above-mentioned shortcomings of the prior art, the present invention aims to provide a vacuum extraction device, so as to solve the problems that the extraction device in the prior art does not have a sealing and fresh-keeping function and the normal pressure extraction efficiency is low.

A vacuum extraction apparatus comprising:

a first container having a reservoir for storing liquid;

The second container is arranged at the open end of the liquid storage cavity and is provided with an air channel and a liquid tank for extraction, the upper end of the liquid tank is communicated with the liquid storage cavity through the air channel, and the lower end of the liquid tank is also communicated with the liquid storage cavity;

the first one-way valve is arranged in the air channel and is in one-way conduction towards the liquid tank;

The filtering piece comprises a filtering structure arranged at the bottom of the liquid tank;

the end cover is arranged at the upper end of the second container, an air suction hole is arranged on the end cover, and the air suction hole is communicated with the upper end of the liquid tank;

The vacuum generator is arranged at the upper end of the end cover, the air extraction end faces the air extraction hole, and the air extraction hole, the liquid groove, the air channel and the liquid storage cavity are sequentially communicated when vacuumizing.

Specifically, the vacuum generator is detachably connected with the end cover, and a first sealing structure is arranged between the vacuum generator and the end cover.

Specifically, the vacuum generator is connected with the end cover in an integrated manner, and an electromagnetic valve is arranged in the vacuum generator.

Specifically, the first container is detachably connected with the second container, and a second sealing structure is arranged between the first container and the second container.

Specifically, the second container is detachably connected with the end cover, and a third sealing structure is arranged between the second container and the end cover.

Specifically, the middle part of the second container is provided with an upward extending pipeline, and the air channel is formed in the middle part of the pipeline.

Specifically, the filter element still include demountable installation in the inboard first sleeve of second container, connect in the bottom in first sleeve lower extreme outside, first sleeve cover is located the pipeline outside, first sleeve upper end side be equipped with a plurality of with the gas pocket of gas channel intercommunication, be equipped with a plurality of filtration holes that link up from top to bottom on the bottom, filtration is located in the filtration hole.

Specifically, a fourth sealing structure is arranged between the first sleeve and the pipeline.

Specifically, the vacuum extraction device further comprises a water outlet structure, and when the air pressure of the liquid storage cavity is lower than that of the liquid tank, the liquid in the liquid tank flows into the liquid storage cavity through the water outlet structure.

Specifically, the vacuum extraction device further comprises a flow dividing member, wherein the flow dividing member is detachably arranged at the bottom of the second container and is used for dividing the liquid flowing down from the liquid tank.

The invention has the beneficial effects that:

The vacuum extraction device is suitable for extracting coffee powder, tea powder and the like, when the vacuum extraction device is used, firstly, the end cover is opened, an extracted object is poured into the liquid tank of the second container, then liquid with proper proportion is poured into the liquid tank, the extracted object is deposited at the bottom after the extracted object and the liquid are poured into the liquid tank, then the end cover is covered, the vacuum generator is placed at the upper end of the end cover, the vacuum generator is started, and the first one-way valve is opened because the pressure of the liquid tank is lower than the pressure of the liquid storage cavity, so that the air suction hole, the liquid tank, the air channel and the liquid storage cavity are sequentially communicated, and the liquid tank and the liquid storage cavity can be in a vacuum state by utilizing the vacuumizing effect of the vacuum generator, so that the extraction effect of the liquid in the liquid tank on the extracted object is improved.

Drawings

FIG. 1 is a sectional view showing the constitution of a vacuum extractor of example 1;

FIG. 2 is a sectional view showing a structure of the vacuum extractor of example 1 taken apart along the axis;

FIG. 3 is a sectional view showing the constitution of a vacuum extractor of example 2;

FIG. 4 is a sectional view showing the constitution of a vacuum extractor of example 3;

FIG. 5 is a sectional view showing a structure of the vacuum extractor of example 3 taken apart along the axis;

FIG. 6 is a perspective view of the water outlet structure and diverter of example 3 after being fried open along an axis;

FIG. 7 is a top view of the lower housing of example 3, with arrows indicating the direction of liquid flow;

FIG. 8 is a cross-sectional view of the second container and duckbill valve of example 4;

FIG. 9 is a sectional view showing the construction of a second container and a second check valve according to embodiment 5;

FIG. 10 is a perspective view of the flow splitter of example 6;

FIG. 11 is a top view of the diverter of example 6 with arrows indicating the direction of liquid flow;

FIG. 12 is a cross-sectional view taken along the A-A plane in FIG. 11;

Fig. 13 is a plan view of the flow divider of example 7, with arrows indicating the direction of liquid flow.

The reference numerals are: the first container 10, the liquid storage chamber 11, the second container 20, the gas passage 21, the liquid tank 22, the first check valve 30, the filter 40, the filter structure 41, the end cap 50, the gas suction hole 51, the vacuum generator 60, the first seal structure 71, the second seal structure 72, the third seal structure 73, the pipe 23, the first sleeve 42, the bottom cap 43, the gas hole 421, the filter hole 431, the fourth seal structure 74, the water outlet structure 80, the bottom plate 81, the joint 82, the liquid discharge hole 25, the flow dividing member 90, the upper case 91, the cover 911, the second sleeve 912, the through hole 9111, the lower case 92, the first body 921, the first pipe body 922, the flow guiding baffle 923, the first flow guiding passage 9231, the second flow guiding passage 9232, the first lower water hole 9233, the duckbill valve 83, the second check valve 84, the second body 93, the arc baffle 94, the partition 95, the mounting portion 96, the flow guiding groove 931, the second lower water hole 932, the third body 97, the second pipe body 98, the arc baffle 99, the S-shaped baffle 971, the third lower water guiding passage 972.

Detailed Description

The present invention provides a vacuum extraction device, and in order to make the objects, technical solutions and effects of the present invention more clear and clear, the present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.

In the description of the present invention, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present invention and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.

Example 1

Referring to fig. 1-2, the present embodiment discloses a vacuum extraction apparatus, which includes:

A first container 10 having a liquid storage chamber 11 for storing liquid;

the second container 20 is arranged at the open end of the liquid storage cavity 11 and is provided with an air channel 21 and a liquid groove 22 for extraction, the upper end of the liquid groove 22 is communicated with the liquid storage cavity 11 through the air channel 21, and the lower end of the liquid groove 22 is also communicated with the liquid storage cavity 11;

a first check valve 30 provided in the air passage 21 and being unidirectional in conduction toward the liquid tank 22;

a filter element 40 comprising a filter structure 41 arranged at the bottom of the sump 22;

the end cover 50 is arranged at the upper end of the second container 20, the end cover 50 is provided with an air suction hole 51, and the air suction hole 51 is communicated with the upper end of the liquid tank 22;

The vacuum generator 60 is arranged at the upper end of the end cover 50, the air extraction end faces the air extraction hole 51, and when vacuum is extracted, the air extraction hole 51, the liquid tank 22, the air channel 21 and the liquid storage cavity 11 are sequentially communicated.

The vacuum extraction device of this embodiment is suitable for extracting coffee powder, tea powder, etc., when in use, firstly, the end cover 50 is opened, then the extracted matter (such as coffee powder, tea powder, etc.) is poured into the liquid tank 22 of the second container 20, then the liquid (such as water, milk, etc.) with proper proportion is poured, the extracted matter is deposited at the bottom after the two are poured, the end cover 50 is covered, the vacuum generator 60 is placed at the upper end of the end cover 50, the vacuum generator 60 is started, and as the pressure of the liquid tank 22 is lower than the pressure of the liquid storage cavity 11, the first one-way valve 30 is opened, so that the air pumping hole 51, the liquid tank 22, the air channel 21 and the liquid storage cavity 11 are communicated in sequence, and the liquid tank 22 and the liquid storage cavity 11 can be in a vacuum state by utilizing the vacuumizing effect of the vacuum generator 60, so that the extracting effect of the liquid in the liquid tank 22 on the extracted matter is improved.

The vacuum extraction can reduce the pollution of air pollutants to the extract, minimize the volatilization loss and oxidation of essence components, and achieve the effect of sealing and fresh-keeping; the dissolution area can be increased rapidly, so that the essence substances of the extracted substances are released more thoroughly, and the extraction concentration is higher. The technical means and the produced effect can refer to the prior art such as a vacuum extraction instrument disclosed in the Chinese patent publication No. CN209423009U, a flower essential oil vacuum extraction process and device disclosed in the Chinese patent publication No. CN106635422A, and the like.

In the extraction stage, in order to avoid that the air pressure of the liquid tank 22 is lower than the air pressure of the liquid storage cavity 11, so that air in the liquid storage cavity 11 directly enters the liquid tank 22 from the liquid outlet 25 at the bottom of the liquid tank 22, the embodiment is provided with the first one-way valve 30, so that the upper end of the liquid tank 22 is communicated with the liquid storage cavity 11 through the air channel 21, and when the vacuum generator 60 is vacuumized, the air pressure of the liquid tank 22 can be kept balanced with the air pressure of the liquid storage cavity 11, so that the situation is avoided.

After the extraction is completed, the vacuum generator 60 can be closed and removed from the upper end of the end cover 50, at this time, because the upper part of the air suction hole 51 is directly communicated with the outside, air enters the liquid tank 22 from the air suction hole 51 so that the air pressure in the liquid tank 22 is increased, the air pressure in the liquid tank 22 is higher than the air pressure in the liquid storage cavity 11, the first one-way valve 30 is closed, because the air pressure in the cavity 11 is lower than the air pressure in the liquid tank 22, the liquid is accelerated to pass through the extracted matter, then passes through the filtering structure 31 to enter the liquid storage cavity 11, the extracted matter is blocked under the action of the filtering structure 31 and cannot pass through, the filtering speed is accelerated through the pressure difference, and the efficiency is greatly improved.

Referring to fig. 2, the vacuum generator 60 of the present embodiment adopts an independent device with a vacuumizing function, the vacuum generator 60 is detachably connected with the end cover 50, in addition, in order to improve the tightness between the vacuum generator 60 and the end cover 50, a first sealing structure 71 is provided between the vacuum generator 60 and the end cover 50, the first sealing structure 71 is an annular sealant, an elastic annular sealant is sleeved on the lower edge of the vacuum generator 60, the annular sealant can be made of an elastomer material such as silica gel, rubber, and the like, preferably a food-grade elastomer material, and is fixed on the lower edge of the vacuum generator 60 by a connection manner such as a loop, bonding, hot melt connection, and the like, the size of the annular sealant is adapted to the size of a limit groove at the upper end of the end cover 50, and when the vacuum generator 60 is placed in the limit groove, due to the gravity of the vacuum generator 40, the sealing gasket is attached to the inner wall of the limit groove, so that the junction of the vacuum generator and the vacuum generator is sealed, gas leakage is avoided, and the lock-free self-sealing is realized.

It should be noted that, in this embodiment, the vacuum generator 60 is used as the negative pressure generator, and only one preferred embodiment is used, and in other embodiments, an air tap may be further disposed on the air suction hole 51 and may be communicated with other devices capable of generating negative pressure through an air duct, which is not limited to the vacuum generator 60 of this embodiment, and all equivalent modifications or substitutions are included in the scope of the invention defined in the claims of the present invention.

It should be added that, the first check valve 30 is specifically a first i-valve, a waist hole for the first i-valve to be clamped in is provided in the air channel 21, the first i-valve is in a structure with a big top and a small bottom, the lower part of the first i-valve is used for buckling the upper part of the waist hole, the upper part of the first i-valve is made of flexible materials, and is in flexible abutting connection with the upper end of the waist hole under the condition that the air pressure at the natural state or the upper end is greater than the air pressure at the lower end, and completely seals the waist hole, when the pressure of the liquid tank 22 is lower than the pressure of the liquid storage cavity 11, the upper part of the first i-valve is pressed and deformed, so that the waist hole can pass through the air flow and the structure is ingenious.

Further, in order to facilitate the detachable cleaning of both the first container 10 and the second container 20, the first container 10 is detachably connected with the second container 20; in addition, in order to improve the sealing performance of the first container 10 and the second container 20 after being combined, a second sealing structure 72 is arranged between the first container 10 and the second container 20, the second sealing structure 72 is a first elastic sealing ring, the first elastic sealing ring is sleeved on the outer side surface of the lower end of the second container 20, and when the lower end of the second container 20 is installed at the open end of the liquid storage cavity 11 of the first container 10, sealing is realized through the first elastic sealing ring, so that gas leakage is prevented.

Further, to facilitate the detachable cleaning of both the second container 20 and the end cap 50, the second container 20 is detachably connected to the end cap 50; in addition, in order to improve the sealing performance of the second container 20 and the end cover 50 after being combined, a third sealing structure 73 is arranged between the second container 20 and the end cover 50, the third sealing structure 73 is a second elastic sealing ring, the second elastic sealing ring is sleeved on the outer side surface of the lower end of the end cover 50, and when the lower end of the end cover 50 is installed at the open end of the liquid tank 22 of the liquid storage cavity 11 of the second container 20, sealing is realized through the second elastic sealing ring, so that gas leakage is prevented.

Further, in order to prevent the liquid in the liquid tank 22 from entering the gas passage 21, in the present embodiment, a pipe 23 extending upward is provided in the middle of the second container 20, and the gas passage 21 is formed in the middle of the pipe 23.

The filter 40 further comprises a first sleeve 42 detachably mounted on the inner side of the second container 20, and a bottom cover 43 connected to the outer side of the lower end of the first sleeve 42, the first sleeve 42 is sleeved on the outer side of the pipeline 23, a plurality of air holes 421 communicated with the air channel 21 are formed in the side face of the upper end of the first sleeve 42, a plurality of filter holes 431 penetrating up and down are formed in the bottom cover 43, the filter structure 41 is arranged in the filter holes 431, the filter structure 41 can be a sheet-shaped filter screen, and the mesh size of the filter screen is designed according to product requirements.

Further, in order to improve the sealing performance of the first sleeve 42 and the pipe 23 after being combined, the fourth sealing structure 74 is provided between the first sleeve 42 and the pipe 23, and the fourth sealing structure 74 is an elastic sealing ring, and the sealing manner of the elastic sealing ring is only a preferred embodiment, in other embodiments, in order to achieve the sealing effect of the first sleeve 42 and the pipe 23 after being combined, the first sleeve 42 and the pipe 23 may also be detachably connected by adopting a threaded connection, a fitting connection, a serration fit connection, or other manners of sealing connection, and all equivalent modifications or substitutions are included in the scope defined in the claims of the present invention.

Example 2

Referring to fig. 3, the difference between the present embodiment and embodiment 1 is that: the vacuum generator 60 is integrally connected with the end cover 50, an electromagnetic valve is arranged in the vacuum generator 60, the vacuum generator 60 stops vacuumizing in the filtering stage, the electromagnetic valve in the vacuum generator 60 is opened to enable the air suction hole 51 to be directly communicated with the outside, and air can sequentially enter the liquid groove 22 through the vacuum generator 60 and the air suction hole 51, so that the air pressure in the liquid groove 22 is improved.

Example 3

In the extraction stage, the liquid directly flows down from the liquid tank 22 due to gravity, resulting in insufficient extraction time of the liquid to the extracted material and poor extraction effect. Based on this, as shown in fig. 4 and 5, the vacuum extraction apparatus of the present embodiment further includes a water outlet structure 80 based on embodiment 1, and the liquid in the liquid tank 22 flows into the liquid storage cavity 11 through the water outlet structure 80 only when the air pressure in the liquid storage cavity 11 is lower than the air pressure in the liquid tank 22 by the on-off action of the water outlet structure 80, so that the liquid in the liquid tank 22 cannot flow into the liquid storage cavity 11 of the first container 10 through the liquid outlet 25 due to the blocking action of the water outlet structure 80 during the extraction stage.

Further, referring to fig. 6, the water outlet structure 80 includes a bottom plate 81 located at the bottom of the second container 20, a connector 82 disposed on the bottom plate, the connector 82 is connected with a liquid outlet of the liquid tank 22, a duckbill silica gel structure is disposed in the connector 82, and the liquid outlet structure has a unidirectional circulation function, and only when the air pressure of the liquid storage cavity 11 is lower than that of the liquid tank 22, the liquid in the liquid tank 22 flows into the liquid storage cavity 11 through the connector 82, so that the structure is ingenious.

In the filtering process, due to the negative pressure, the liquid flows down from the liquid tank 22 faster, resulting in uneven mixing effect of the liquid and the extracted object, and based on this, as shown in fig. 5, the vacuum extraction apparatus of the embodiment further includes a flow dividing member 90, where the flow dividing member 90 is detachably mounted at the bottom of the second container 20, and is used for dividing the liquid flowing down from the liquid tank 22, so as to prolong the flow path of the liquid and the extracted object, and improve the mixing effect of the liquid and the extracted object.

Further, referring to fig. 6 and 7, the flow divider 90 of the present embodiment includes an upper housing 91 and a lower housing 92; wherein, the upper case 91 comprises a cap 911 installed at the bottom of the second container 20 and a second sleeve 912 connected to the middle of the upper end of the cap 911, the upper end of the second sleeve 912 is communicated with the air passage 21, and the cap 911 is provided with a through hole 9111 through which the liquid flows down.

The lower casing 92 includes the first body 921 that can dismantle the fixed in the upper cover lower extreme, connect at first body 921 middle part and upwards extend first body 922 and two water conservancy diversion baffles 923 of distributing at first body 922 outlying, form the first water conservancy diversion passageway 9231 that is used for the drainage between two water conservancy diversion baffles 923, and every water conservancy diversion baffle 923 forms by oneself and first water conservancy diversion passageway 9231 intercommunication and inwards drains second water conservancy diversion passageway 9232, the middle part lower extreme of second water conservancy diversion passageway 9232 is provided with first water outlet 9233, after the liquid passed out water conservancy diversion structure 80 and flowed down first water conservancy diversion passageway 9231, can flow into second water conservancy diversion passageway 9232 along first water conservancy diversion passageway 9231, form vortex effect in second water conservancy diversion passageway 9232, further improve the mixing effect of liquid and the extract, finally, the rethread first water outlet 9233 flows.

Example 4

Referring to fig. 8, the difference between the present embodiment and embodiment 1 is that: the water outlet structure 80 adopts a duckbill valve 83, the duckbill valve 83 is an elastic valve made of food grade silica gel and has a structure with a large upper part and a flat lower part, the water outlet structure 80 adopts the duckbill valve 83 as a preferred embodiment, in other embodiments, the water outlet structure 80 can also adopt valve structures such as an electric valve, a pneumatic valve and the like, and the valve structures are not limited to the duckbill valve 83, and all equivalent variants or substitutions are included in the scope of the invention defined in the claims.

Example 5

Referring to fig. 9, the difference between the present embodiment and embodiment 1 is that: the water outlet structure 80 adopts a second one-way valve 84, the second one-way valve 84 is a second I-shaped valve, the second I-shaped valve is clamped into the liquid outlet 25, the second I-shaped valve is of a structure with a small upper part and a large lower part, the upper part of the second I-shaped valve is used for buckling the upper end of the liquid outlet 25, the lower part of the second I-shaped valve is made of flexible materials, in a natural state, the lower part of the second I-shaped valve is flexibly abutted with the lower end of the liquid outlet 25 and completely seals the liquid outlet 25, and when the pressure of the liquid tank 22 is larger than the pressure of the liquid storage cavity 11, the lower part of the second I-shaped valve is pressed and deformed, so that the liquid outlet 25 can pass through liquid, and the structure is ingenious; of course, the second one-way valve 84 is only a preferred embodiment of the water outlet structure 80, and in other embodiments, the water outlet structure 80 may also be a valve structure such as an electric valve, a pneumatic valve, etc., which is not limited to the second one-way valve 84, and all equivalent modifications or substitutions are included in the scope of the invention as defined in the claims.

Example 6

Referring to fig. 10 to 12, the difference between the present embodiment and embodiment 1 is that: the flow divider 90 of the present embodiment includes a second body 93, an arcuate baffle 94, and a baffle 95, wherein:

the upper end of the second body 93 is provided with a downward-concave diversion trench 931, a liquid outlet 25 at the bottom of the liquid tank 22 is arranged above the periphery of the diversion trench 931, and after the liquid flows down the diversion trench 931, the liquid can flow downwards along the diversion trench 931 in a spiral manner (vortex effect), so that the mixing effect of the liquid and the extracted matters is further improved;

The arc-shaped baffles 94 are four and distributed in the middle of the diversion trench 931 in a circumferential array, two second downcomers 932 penetrating downwards are arranged in the area surrounded by the arc-shaped baffles 94, an opening for liquid to flow in is formed at the joint position of the two arc-shaped baffles 94, and after the liquid flows in along the opening, part of the liquid can flow along the inner wall of the arc-shaped baffles 94, so that an effective diversion and diversion effect is achieved;

The baffle 95 is located guiding gutter 931 middle part, and the middle part of baffle 95 is round platform column structure, and both ends extend to the handing-over position of two arc baffles 94 for separate into two reposition of redundant personnel district with arc baffles 94 around the region that forms, a second apopore 932 corresponds to locate in a reposition of redundant personnel district, improves the dispersion effect of liquid.

In addition, the diverter 90 of this embodiment further includes a mounting portion 96, the lower end of the mounting portion 96 is integrally connected with the second body 93 in a molding manner, the upper end is connected with the second container 20 in a fastening manner, specifically, a clamping groove is provided on the mounting portion 96, a clamping block matched with the clamping groove is provided at the bottom of the second container 20, and the diverter 90 is convenient to be disassembled and assembled by fastening combination of the mounting portion 96 and the second body 93.

In this embodiment, the split member 90 is mounted by a snap connection, which is only a preferred embodiment, and in other embodiments, screw fixation, screw connection, butt connection, sleeve connection, etc. may be used, which is not limited to the snap connection of this embodiment.

Example 7

Referring to fig. 13, the difference between the present embodiment and embodiment 1 is that: the flow dividing member 90 used in this embodiment includes a third body 97, a second pipe body 98 connected in the middle of the third body 97 and extending upward, two arc baffles 99 and four S-shaped baffles 910 distributed on the periphery of the second pipe body 98, a third water drain 971 is disposed on opposite sides of the two arc baffles 99, and each two S-shaped baffles 910 cooperate to form a horn-shaped third flow guiding channel 972, after the liquid passes through the water outlet structure 80 and flows down the third flow guiding channel 972, the liquid can gradually narrow along the third flow guiding channel 972 and flow into front sides of the two arc baffles 99, and the two arc baffles 99 guide the liquid to form a vortex effect, so that the mixing effect of the liquid and the extracted object is further improved, and finally the liquid flows out through the third water drain 971.

While the preferred embodiment of the present invention has been described in detail, the invention is not limited to the embodiments, and various equivalent modifications and substitutions can be made by those skilled in the art without departing from the spirit of the invention, and these equivalent modifications and substitutions are intended to be included in the scope of the invention as defined in the appended claims.

Claims (7)

1. A vacuum extraction apparatus, comprising:

a first container (10) having a liquid storage chamber (11) for storing liquid;

The second container (20) is arranged at the open end of the liquid storage cavity (11) and is provided with an air channel (21) and a liquid tank (22) for extraction, the upper end of the liquid tank (22) is communicated with the liquid storage cavity (11) through the air channel (21), and the lower end of the liquid tank (22) is also communicated with the liquid storage cavity (11);

A first one-way valve (30) provided in the air passage (21) and being one-way-conductive toward the liquid tank (22);

A filter element (40) comprising a filtering structure (41) arranged at the bottom of the tank (22);

The end cover (50) is arranged at the upper end of the second container (20), a suction hole (51) is formed in the end cover (50), and the suction hole (51) is communicated with the upper end of the liquid tank (22);

the vacuum generator (60) is arranged at the upper end of the end cover (50), the air extraction end faces the air extraction hole (51), and when vacuum is extracted, the air extraction hole (51), the liquid tank (22), the air channel (21) and the liquid storage cavity (11) are sequentially communicated;

the middle part of the second container (20) is provided with an upward extending pipeline (23), and the air channel (21) is formed in the middle part of the pipeline (23);

The filter element (40) further comprises a first sleeve (42) detachably arranged on the inner side of the second container (20), and a bottom cover (43) connected to the outer side of the lower end of the first sleeve (42), the first sleeve (42) is sleeved on the outer side of the pipeline (23), a plurality of air holes (421) communicated with the air channel (21) are formed in the side surface of the upper end of the first sleeve (42), a plurality of filter holes (431) penetrating up and down are formed in the bottom cover (43), and the filter structure (41) is arranged in the filter holes (431);

The vacuum extraction device further comprises a flow dividing member (90), wherein the flow dividing member (90) is detachably arranged at the bottom of the second container (20) and is used for dividing liquid flowing down from the liquid tank (22).

2. A vacuum extraction apparatus according to claim 1, wherein the vacuum generator (60) is detachably connected to the end cap (50), and wherein a first sealing structure (71) is provided between the vacuum generator (60) and the end cap (50).

3. Vacuum extraction device according to claim 1, characterized in that the vacuum generator (60) is integrally connected with the end cap (50), the vacuum generator (60) being built-in with a solenoid valve.

4. A vacuum extraction apparatus according to claim 1, wherein the first container (10) is detachably connected to the second container (20), and a second sealing structure (72) is provided between the first container (10) and the second container (20).

5. A vacuum extraction apparatus according to claim 1, wherein the second container (20) is detachably connected to the end cap (50), and a third sealing structure (73) is provided between the second container (20) and the end cap (50).

6. A vacuum extraction device according to claim 1, characterized in that a fourth sealing structure (74) is provided between the first sleeve (42) and the conduit (23).

7. A vacuum extraction apparatus according to claim 1, further comprising a water outlet structure (80), wherein when the air pressure of the liquid storage chamber (11) is lower than the air pressure of the liquid tank (22), the liquid in the liquid tank (22) flows into the liquid storage chamber (11) through the water outlet structure (80).