CN217447403U - Low pressure extraction system - Google Patents

Abstract

The utility model relates to a low pressure extraction system, its characterized in that: the beverage capsule sealing device comprises a housing, wherein a drawer is arranged at the bottom of the housing, a containing position for hanging a beverage capsule is arranged on the drawer, a movable support and a rotary support are arranged in the housing, a hot water inlet channel is arranged in the movable support, the rotary support and the movable support are mutually sleeved and connected through a column groove transmission structure or a thread transmission structure, so that the rotary support is driven to rotate to drive the movable support to move up and down, the movable support can be locked at the lowest part and the uppermost part, a sealing pad and a puncture needle are fixed on the bottom surface of the movable support, a water injection channel communicated with the hot water inlet channel is arranged in the puncture needle, the movable support moves down to the lowest part, the sealing pad can be pressed on the top surface of the beverage capsule in the drawer moving inwards in the housing, and the puncture needle punctures the beverage capsule. Has the advantages of small and reasonable structure and novel extraction operation mode.

Description

Low pressure extraction system

Technical Field

The utility model relates to a beverage extraction equipment especially relates to a beverage brewing equipment's low pressure extraction system, and beverage extraction equipment is one kind and extracts the equipment of extracting of corresponding juice with the holding thing in the container through the high pressure adds hot water fast, is suitable for to handle the container (capsule) of packing and is equipped with the batching, and the batching can produce beverage or edible juice after the liquid like hot pressurized water interact in with being introduced the capsule, and common extraction equipment is coffee extraction machine, tea drink extraction machine etc..

Background

The coffee machine is the most common one of beverage extraction devices, a heating system and a brewing system are two main components of the coffee machine, the heating system generally comprises a water tank, a heating element, a water pump and the like, the brewing system comprises a fixed part and a moving part, one of the fixed part and the moving part is provided with a puncture needle, the puncture needle is directly fixed with the part, the moving part is driven by a driving structure to slide relative to the fixed part, the fixed part and the moving part are folded to form a brewing cavity, or the moving part compresses a coffee capsule, the capsule compressed by the moving part is used as the brewing cavity, during extraction, heated water is pumped into the extraction cavity by the water pump, the water flows through coffee materials to be extracted, and the coffee beverage flows into a cup from a water outlet pipe of the coffee machine. The brewing system and the heating system of the existing most coffee machines are divided into two different parts, and the heating system flows to a brewing cavity through a longer flow channel, so that the heat loss is large, and the influence on the coffee extraction effect is large. In addition, the brewing system and the heating system are independent from each other, so that the coffee machine is large in size and is not beneficial to miniaturization of products.

The driving structure for driving the two members to move to close and open the two members in the coffee machine has three main forms:

one is a handle and connecting rod driving type, for example, the Chinese patent invention 'a device for preparing beverage extraction material' with the patent number ZL00812101.X (with the publication number CN1263415Y) discloses a machine element driving structure with the handle and connecting rod driving type. The handle connecting rod type machine element driving structure relates to the complex structure of multiple parts, and when the coffee machine is used, a handle needs to be pulled upwards or pressed downwards, the handle is pulled upwards to form a certain angle before a coffee capsule is placed, the handle is tilted to occupy larger height, the coffee machine can be used only when being placed at a position with a certain height space, the requirement on the placing space of the coffee machine is high, and the coffee machine is not humanized in use.

The other is an electric driving type, for example, Chinese patent invention 'brewing machine' with patent number ZL201380006474.0 (publication number CN104066362A) discloses a brewing system driven by a motor, a gear and a worm, which has the defects of complex structure, high cost and great manufacturing difficulty of related parts.

The third one is hydraulic drive type, for example, the chinese utility model patent No. ZL201020113007.1 (publication No. CN201617680U) discloses a hydraulic drive type driving structure in the "packet feeding and removing structure of a beverage brewing device". The structure has high requirement on a water path, and two water paths are required to be introduced, so that the whole system is large in size.

In view of the above, the extraction system of the present beverage brewing apparatus can be further improved.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a small and exquisite reasonable, the novel low pressure extraction system of extraction operation mode of structure is provided to above-mentioned prior art current situation.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: a low pressure extraction system, characterized by: the beverage capsule injection machine comprises a shell, wherein a drawer capable of entering and exiting is arranged at the bottom of the shell, a containing position for hanging a beverage capsule is arranged on the drawer, a movable support capable of moving up and down and a rotary support capable of rotating around the axis of the drawer are arranged in the shell, a hot water inlet channel is arranged in the movable support, the rotary support is driven by a knob exposing the top of the shell to rotate, the rotary support and the movable support are mutually sleeved and connected through a column groove transmission structure or a thread transmission structure, so that the rotary support rotates to drive the movable support to move up and down and can lock the movable support at the lowest part and the uppermost part, a sealing pad and a puncture needle are fixed on the bottom surface of the movable support, a water injection channel communicated with the hot water inlet channel is arranged in the puncture needle, and the movable support moves down to the lowest part and can press the sealing pad on the top surface of the beverage capsule in the drawer internally moved in the shell, and the piercing pin pierces the beverage capsule.

The column groove transmission structure comprises a plurality of guide grooves arranged on the peripheral wall of the movable support and a plurality of driving columns arranged on the rotary support, wherein the driving columns are arranged in the guide grooves, the driving columns are driven by the rotation of the rotary support to move along the guide grooves, the guide grooves are provided with upper horizontal groove parts, lower horizontal groove parts and inclined groove parts, and the upper horizontal groove parts are arranged above the lower horizontal groove parts in an inclined mode and are communicated through the inclined groove parts.

The upper horizontal groove part, the lower horizontal groove part and the inclined groove part are all arranged along the peripheral wall of the rotating bracket, after the guide groove is unfolded, the upper horizontal groove part and the lower horizontal groove part are arranged horizontally, and the inclined groove part is arranged in an inclined manner; when the driving column moves to the upper horizontal groove part, the movable support moves downwards to the lowest position, and the upper horizontal groove part has an up-and-down constraint effect on the driving column, so that the movable support cannot move up and down when being driven by an axial external force when the movable support is subjected to the axial force, namely the movable support is axially locked at the lowest position; when the driving column moves to the lower horizontal groove part, the movable support moves upwards to the uppermost position, and the lower horizontal groove part has the function of restraining the driving column up and down, so that the movable support cannot move up and down when being driven by the axial external force when the movable support is subjected to the axial force, namely, the movable support is axially locked at the uppermost position. Therefore, the guide groove is simplest and most reasonable in structural design and meets design requirements.

Alternatively, the screw transmission structure includes an internal thread formed on an inner peripheral wall of the rotary bracket and an external thread formed on an outer peripheral wall of the movable bracket. The thread transmission part enables the rotary support to rotate to drive the movable support to move, the threads have a certain locking effect, the locking effect of thread locking is poor, and the thread transmission part is used for a long time, so that the driving and locking effects can be further influenced due to thread abrasion.

The driving column moves along the guide groove, so the driving column is in clearance fit with the guide groove bracket, and the rotating bracket and the moving bracket can move. The supporting spring has the function of filling the gap, the hand feeling is ensured, and the movable support of the movable support cannot be loosened.

As an improvement, the guide groove is also provided with a mounting groove which vertically penetrates through the top surface of the movable support, the lower end of the mounting groove is communicated with the upper horizontal groove part, and the driving column can enter from the top of the mounting groove. The mutual installation of more making things convenient for runing rest and movable support of setting up of mounting groove ensures that the drive post can not lead to the fact interference influence to it when installing, and the drive post can get into from the mounting groove top during the installation, then in the runing rest alright make the drive post get into horizontal slot portion, the installation was accomplished in rotatory.

The rotary support is further improved, a radial convex stop block is arranged on the rotary support, and a first stop part and a second stop part which are arranged at intervals along the circumference are arranged on the shell; when the rotating bracket rotates to a state that the stop block is matched with the first stop part in a blocking way, the driving column is positioned in the upper horizontal groove part; and when the rotating bracket rotates to the state that the stop block is matched with the second blocking part in a blocking way, the driving column is positioned in the lower horizontal groove part. The structure has an angle limiting effect on the rotation of the rotating bracket, and when the rotating bracket rotates to two extreme positions, the moving bracket is just positioned at the uppermost position or the lowermost position.

Preferably, the rotating bracket is further provided with a hanging edge protruding outwards in the radial direction, the rotating bracket is hung on the top surface of the shell through the hanging edge and the stop block, and the top surface of the shell is further fixed with a gland which restrains the hanging edge and the stop block on the top surface of the shell; the top surface of the rotating support is provided with salient points which are arranged at intervals along the circumference, and the salient points are in contact with the inner top surface of the gland. The setting of hanging the limit has the downward constraining action of axial to the rotation support, and the gland then has the upward constraining action of axial to the rotation support, and the area of contact of reduction rotation support top surface and gland is set up to the bump simultaneously for the rotating bracket rotating resistance is little, rotates more easily relatively. The top of the shell is provided with a positioning ball supported by a spring, the bottom surface of the stop block is provided with two positioning concave pits arranged at intervals along the circumference, and when the rotating bracket rotates to enable the movable bracket to be at the lowest part or the uppermost part, the positioning ball is clamped in one of the positioning concave pits. When the rotary bracket is rotated to be opened or extracted, the positioning ball is clamped into the positioning concave pit under the action of the spring, the positioning ball is quickly positioned to form a click sound, the click sound is confirmed to be in place, and the hand feeling is better.

The sealing gasket is further improved to be annular, the bottom surface of the movable support is provided with a boss part, the sealing gasket is sleeved on the boss part and is fixed on the bottom surface of the movable support through a pressing plate fixed on the bottom surface of the boss part, a flexible sucking disc is fixed on the pressing plate, and the pricking pin penetrates through the middle part of the flexible sucking disc and then is fixed on the boss part. The clamp plate is realized being the fixed of annular sealed pad, and the setting of flexible sucking disc for flexible sucking disc can form to change sealedly with the top surface of beverage capsule, and the felting needle passes in the middle part of flexible sucking disc in addition and fixes in boss portion, and this when making the extraction, pressure hot water is difficult for outwards overflowing from the felting needle periphery, and the extraction effect is better.

Preferably, the outer circumferential wall of the movable support is provided with a plurality of guide parts arranged at intervals along the circumference, the inner wall of the housing is provided with a plurality of guide grooves which are arranged in the guide parts in the axial direction, the outer part of the movable support is provided with a water receiving nozzle protruding in the radial direction, the water inlet channel penetrates through the water receiving nozzle, the circumferential wall of the housing is provided with a notch for the water receiving nozzle to slide up and down in the peripheral wall, and the notch penetrates through the top surface of the housing. The guide part and the guide groove have a guide constraint effect, so that the movable support only moves up and down and cannot rotate, in addition, the notch is arranged, so that the water receiving nozzle can not move up and down, the installation is realized, the water receiving nozzle can also be assembled from the upper part of the notch, the water receiving nozzle is arranged, a water pipe is conveniently communicated with a hot water inlet channel outside the shell, and the assembly is more convenient.

The drawer is further improved, clamping grooves are formed in the left side wall and the right side wall of the drawer, elastic arms which are arranged at intervals at the left side and the right side are arranged at the bottom of the shell, clamping ball heads used for being clamped into the clamping grooves are arranged at the inner ends of the elastic arms, and the clamping ball heads are clamped into the clamping grooves when the drawer moves into the shell; the containing position is a step perforation, after the body part of the beverage capsule passes through the small hole part of the step perforation, the annular edge of the beverage capsule is placed on the bottom surface of the large hole part of the step perforation. The cooperation of screens bulb and screens groove has the prepositioning effect, and the operator needs a constant force just can pull out the drawer, and the operation is felt better. The ladder perforation is used as a containing position, and the structure is simpler.

Compared with the prior art, the utility model has the advantages of: the system is simple in structure, only the rotating support is required to rotate, the rotating support drives the movable support to move up and down through the column groove transmission structure or the thread transmission structure, the movable support can be locked at the lowest part and the uppermost part, the rotating support and the movable support are sleeved with each other, and the groove transmission structure or the thread transmission structure is arranged between the rotating support and the movable support, so that the integral driving structure is more compact; rotatory mode drives the movable support and moves down and compare with traditional connecting rod formula structure, and the structure is simpler, and convenient operation compares with motor drive, and is with low costs, compares with hydraulic pressure structure, and this scheme only need a hot water route can, simplify the hydraulic pressure water route. In the existing beverage extraction system, a mode of driving the movable bracket to move in a rotating mode is not provided, so that the structure is more novel.

Drawings

Fig. 1 is a schematic perspective view (initial state) of an embodiment of the present invention;

FIG. 2 is a second cross-sectional view (initial state) along the direction of the drawer according to the embodiment of the present invention;

FIG. 3 is a cross-sectional view perpendicular to the drawer in-out direction (initial state) according to the embodiment of the present invention;

FIG. 4 is a cross-sectional view of the embodiment of the present invention taken along the direction of the drawer access (intermediate state);

FIG. 5 is a cross-sectional view perpendicular to the drawer in-out direction (intermediate position) of the embodiment of the present invention;

fig. 6 is a schematic perspective view (extraction state) of the embodiment of the present invention;

FIG. 7 is a cross-sectional view of the embodiment of the present invention taken along the direction of the drawer access (extraction state);

FIG. 8 is a cross-sectional view perpendicular to the direction of drawer access (extracted state) according to an embodiment of the present invention;

FIG. 9 is a schematic perspective view of the embodiment of the present invention with the knob removed;

fig. 10 is a schematic perspective view of the embodiment of the present invention with the knob and the rotating bracket removed;

FIG. 11 is a schematic perspective view of a beverage capsule according to an embodiment of the present invention;

fig. 12 is a schematic perspective view of an outer shell according to an embodiment of the present invention;

fig. 13 is a schematic perspective view of a mobile stand according to an embodiment of the present invention;

fig. 14 is a perspective view of a select bracket according to an embodiment of the present invention;

fig. 15 is an exploded perspective view of an embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

As shown in fig. 1 to 15, it is a preferred embodiment of the present invention.

The utility model provides a low pressure extraction system, is particularly suitable for extracting the tea drink because it does not need higher extraction pressure, includes shell 1, and the bottom of shell 1 is equipped with the drawer 2 that can pass in and out, and the bottom of shell 1 has the holding chamber that supplies drawer 2 to pass in and out, and the bottom opening front end in holding chamber runs through, and the left and right sides inner wall in holding chamber opens has the guiding groove 1c that supplies the drawer direction. The drawer 2 is provided with a containing position 21 hung on the beverage capsule 4, the containing position 21 is a step perforation, after the body part of the beverage capsule 4 passes through the small hole part of the step perforation, the annular edge 41 of the beverage capsule 4 is placed on the bottom surface of the large hole part of the step perforation. Open on the lateral wall about drawer 2 has screens groove 22, and the elastic arm 16 that the interval set up about the bottom of shell 1 is equipped with, and the inner of elastic arm 16 is equipped with and is used for the card to go into the screens bulb 161 in screens groove 22, under the state that drawer 2 removed to the shell 1 in, screens bulb 161 card goes into screens groove 22.

A movable support 3 capable of moving up and down and a rotary support 5 capable of rotating around the axis of the movable support are arranged in the shell 1, a hot water inlet channel 31 is arranged in the movable support 3, the rotary support 5 is driven by a knob 17 exposed out of the top of the shell 1 and can rotate, the knob 17 is inserted at the upper end of the rotary support 5, the rotary support 5 and the movable support 3 are mutually sleeved and connected through a column slot transmission structure, so that the rotary support 5 rotates to drive the movable support 3 to move up and down, and can lock the movable support 3 in the lowermost and uppermost positions, a sealing gasket 6 and a puncture needle 7 are fixed on the bottom surface of the movable support 3, a water injection channel 71 communicated with the hot water inlet channel 31 is arranged in the puncture needle 7, the movable support 3 can press the sealing gasket 6 on the top surface of the beverage capsule 4 in the drawer 2 moved in the housing 1 when moving downwards to the lowermost position, and the puncture needle 7 punctures the beverage capsule 4.

The sealing gasket 6 is annular, the bottom surface of the movable support 3 is provided with a boss part 32, the sealing gasket 6 is sleeved on the boss part 32, the sealing gasket 6 is fixed on the bottom surface of the movable support 3 through a pressing plate 12 fixed on the bottom surface of the boss part 32, a flexible sucking disc 13 is fixed on the pressing plate 12, the sealing gasket 6 and the flexible sucking disc 13 are made of silica gel materials, and the puncture needle 7 penetrates through the middle part of the flexible sucking disc 13 and then is fixed on the boss part 32.

The column slot transmission structure comprises a plurality of guide slots 8 arranged on the peripheral wall of the movable support 3 and a plurality of driving columns 9 arranged on the rotary support 5, wherein the driving columns 9 are arranged in the guide slots 8, the driving columns 9 are driven by the rotation of the rotary support 5 to move along the guide slots 8, the guide slots 8 are provided with upper horizontal slot parts 81, lower horizontal slot parts 82 and inclined slot parts 83, and the upper horizontal slot parts 81 are positioned obliquely above the lower horizontal slot parts 82 and are communicated through the inclined slot parts 83. The guide groove 8 further has a mounting groove 84 vertically penetrating the top surface of the moving bracket 3, the lower end of the mounting groove 84 communicates with the upper horizontal groove portion 81, and the driving column 9 can enter from the top of the mounting groove 84.

The rotating bracket 5 is sleeved on the upper part of the moving bracket 3, a supporting spring 10 is arranged in the moving bracket 3, and the supporting spring 10 is supported between the inner top wall of the rotating bracket 5 and the inner bottom wall of the moving bracket 3, so that the moving bracket 3 keeps the trend of moving downwards relative to the rotating bracket 5.

A radial convex stop block 51 is arranged on the rotary bracket 5, and a first stop part 1a and a second stop part 1b which are arranged at intervals along the circumference are arranged on the shell 1; when the rotating bracket 5 rotates to the state that the stopper 51 is matched with the first blocking part 1a, the driving column 9 is positioned in the upper horizontal groove part 81; when the rotating bracket 5 rotates to a state that the stopper 51 is engaged with the second blocking portion 1b, the driving column 9 is located in the lower horizontal groove portion 82.

The rotating bracket 5 is further provided with a hanging edge 52 protruding outwards in the radial direction, the rotating bracket 5 is hung on the top surface of the shell 1 through the hanging edge 52 and the stop block 51, the top surface of the shell 1 is further fixed with a gland 11, and the gland 11 restrains the hanging edge 52 and the stop block 51 on the top surface of the shell 1.

The top surface of the rotating bracket 5 is provided with salient points 53 arranged at intervals along the circumference, and the salient points 53 are contacted with the inner top surface of the gland 11. The top of the shell 1 is provided with a positioning ball 18 supported by a spring, the bottom surface of the stopper 51 is provided with two positioning concave pits 511 arranged at intervals along the circumference, and when the rotating bracket 5 rotates to enable the moving bracket 3 to be in the lowest or the highest position, the positioning ball 18 is clamped in one of the positioning concave pits 511.

The peripheral wall of the movable support 3 is provided with a plurality of guide parts 33 arranged at intervals along the circumference, the inner wall of the shell 1 is provided with a plurality of guide grooves 14 which are arranged in the guide parts 33 in the axial direction, the outer part of the movable support 3 is provided with a water receiving nozzle 34 protruding in the radial direction, the hot water inlet channel 31 penetrates through the water receiving nozzle 34, the peripheral wall of the shell 1 is provided with a notch 15 for the water receiving nozzle 34 to slide up and down in the notch, and the notch 15 penetrates through the top surface of the shell 1.

The mutual cover of runing rest 5 and movable support 3 is established and can also be connected through screw drive structure, and screw drive structure is including the internal thread of locating runing rest 5 internal perisporium and locating the external screw thread on the periphery wall of movable support 3. Not shown in the drawings of the present embodiment.

The working principle and the process of the brewing system are as follows:

in the initial state, as shown in fig. 1 to 3, the driving column 9 moves to the lower horizontal groove 82, and the movable bracket 3 moves up to the uppermost position, and the lower horizontal groove 82 restrains the driving column 9 up and down, so that the movable bracket 3 is not moved up and down when being driven by an external axial force when the movable bracket 3 receives an axial force, that is, the movable bracket 3 is axially locked at the uppermost position.

During extraction, the drawer 2 is moved outwards, after the body part of the beverage capsule 4 passes through the small hole part of the step perforation, the annular edge 41 of the beverage capsule 4 is placed on the bottom surface of the large hole part of the step perforation, namely the beverage capsule 4 is hung on the drawer. Then the drawer is pushed into the housing 1, the knob 17 is rotated to drive the rotary bracket 5 to rotate in the forward direction, the driving column 9 slides from the lower horizontal groove 82 to the upper horizontal groove 81 along the chute 83, the driving column 9 moves upwards along the chute 83, the driving column 9 drives the movable bracket 3 to move downwards, when the driving column 9 moves to the upper horizontal groove 81, the movable bracket 3 moves downwards to the lowest position, and the upper horizontal groove 81 has the upper and lower constraint effect on the driving column 9, so that the movable bracket 3 cannot move upwards and downwards when being driven by the axial external force (water pressure during extraction) when the movable bracket 3 is subjected to the axial force, namely the movable bracket 3 is axially locked at the lowest position, the sealing gasket 6 on the movable bracket 3 at the position is pressed on the top surface of the beverage capsule 4 in the drawer 2 moving inwards in the housing 1, and the puncture needle 7 punctures the beverage capsule 4. High-pressure water is injected from the hot water inlet channel 31 into the beverage capsule 4 via the water injection channel 71 in the needle 7 to achieve extraction.

After extraction is completed, the knob 17 is rotated to drive the rotating bracket 5 to rotate reversely, the driving column 9 slides from the upper horizontal groove part 81 to the lower horizontal groove part 82 along the chute part 83, the driving column 9 moves downwards along the chute part 83, the driving column 9 drives the moving bracket 3 to move upwards, when the driving column 9 moves to the lower horizontal groove part 82, the moving bracket 3 moves downwards to the uppermost part, and the lower horizontal groove part 82 has an up-and-down constraint effect on the driving column 9, so that the moving bracket 3 cannot move upwards and downwards when being driven by an axial external force when the moving bracket 3 is subjected to the axial force, namely, the moving bracket 3 is axially locked at the uppermost part, the moving bracket 3 is far away from the beverage capsule 4, the drawer 2 is pulled out, and finally the extracted beverage capsule 4 is taken out.

It should be noted that in the description of the present embodiment, the terms "front, back", "left, right", "up, down", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for convenience of description of the present invention and simplification of description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. The terms "mounted," "connected," and "coupled" are to be construed broadly and may, for example, be fixedly coupled, detachably coupled, or integrally coupled; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Claims (10)

1. A low pressure extraction system, characterized by: comprises a shell (1), a drawer (2) which can be accessed is arranged at the bottom of the shell (1), a containing position (21) which is hung on a beverage capsule (4) is arranged on the drawer (2), a moving bracket (3) which can move up and down and a rotating bracket (5) which can rotate around the axis of the rotating bracket are arranged in the shell (1), a hot water inlet channel (31) is arranged in the moving bracket (3), the rotating bracket (5) is driven by a knob (17) which is exposed at the top of the shell (1) and can rotate, the rotating bracket (5) and the moving bracket (3) are mutually sleeved and connected through a column slot transmission structure or a thread transmission structure, so that the rotating bracket (5) drives the moving bracket (3) to move up and down and can lock the moving bracket (3) at the lowest part and the uppermost part, a sealing pad (6) and a puncture needle (7) are fixed on the bottom surface of the moving bracket (3), the puncture needle (7) is internally provided with a water injection channel (71) communicated with the hot water inlet channel (31), the movable bracket (3) moves downwards to the lowest position to press the sealing pad (6) on the top surface of the beverage capsule (4) in the drawer (2) internally moved in the shell (1), and the puncture needle (7) punctures the beverage capsule (4).

2. The low pressure extraction system of claim 1, wherein: the column groove transmission structure comprises a plurality of guide grooves (8) formed in the peripheral wall of the movable support (3) and a plurality of driving columns (9) arranged on the rotary support (5), the driving columns (9) are arranged in the guide grooves (8), the driving columns (9) are driven to move along the guide grooves (8) by rotation of the rotary support (5), the guide grooves (8) are provided with upper horizontal groove parts (81), lower horizontal groove parts (82) and inclined groove parts (83), and the upper horizontal groove parts (81) are located above the lower horizontal groove parts (82) in an inclined mode and communicated with the inclined groove parts (83).

3. A low pressure extraction system as claimed in claim 2, wherein: the upper portion at movable support (3) is established to runing rest (5) cover, is equipped with supporting spring (10) in movable support (3), supporting spring (10) support between the interior roof of runing rest (5) and the interior diapire of movable support (3) to make movable support (3) keep the trend that moves down relatively runing rest (5).

4. A low pressure extraction system as claimed in claim 2, wherein: the guide groove (8) is also provided with a mounting groove (84) vertically penetrating through the top surface of the movable support (3), the lower end of the mounting groove (84) is communicated with the upper horizontal groove part (81), and the driving column (9) can enter from the top of the mounting groove (84).

5. The low pressure extraction system of claim 4, wherein: a radial convex stop block (51) is arranged on the rotary support (5), and a first stop part (1a) and a second stop part (1b) which are arranged at intervals along the circumference are arranged on the shell (1); when the rotating bracket (5) rotates to a state that the stop block (51) is matched with the first blocking part (1a), the driving column (9) is positioned in the upper horizontal groove part (81); when the rotating bracket (5) rotates to the state that the stop block (51) is matched with the second blocking part (1b), the driving column (9) is positioned in the lower horizontal groove part (82).

6. The low pressure extraction system of claim 5, wherein: the rotary support (5) is further provided with a hanging edge (52) protruding outwards in the radial direction, the rotary support (5) is hung on the top surface of the shell (1) through the hanging edge (52) and the stop block (51), the top surface of the shell (1) is further fixedly provided with a gland (11), and the hanging edge (52) and the stop block (51) are restrained on the top surface of the shell (1) by the gland (11); the top surface of the rotating bracket (5) is provided with salient points (53) which are arranged at intervals along the circumference, and the salient points (53) are contacted with the inner top surface of the gland (11); the top of the shell (1) is provided with a positioning ball (18) supported by a spring, the bottom surface of the stop block (51) is provided with two positioning concave pits (511) arranged at intervals along the circumference, and when the rotating bracket (5) rotates to enable the moving bracket (3) to be located at the lowest part or the uppermost part, the positioning ball (18) is clamped in one of the positioning concave pits (511).

7. The low pressure extraction system of claim 1, wherein: sealing pad (6) are cyclic annular, the bottom surface that removes support (3) has boss portion (32), sealing pad (6) cover is established on boss portion (32) to clamp plate (12) through fixing at boss portion (32) bottom surface will seal up (6) and fix the bottom surface at removing support (3), be fixed with flexible sucking disc (13) on clamp plate (12), after puncture needle (7) pass from flexible sucking disc (13) middle part in boss portion (32) are fixed.

8. The low pressure extraction system of claim 1, wherein: the periphery wall of removal support (3) has a plurality of guide part (33) that set up along the circumference interval, the inner wall of shell (1) is equipped with many altogether guide part (33) place guide slot (14) of the axial setting in it in, the outside of removal support (3) has radial bellied water receiving nozzle (34), it runs through to advance hot water passageway (31) water receiving nozzle (34), it has confession water receiving nozzle (34) breach (15) that slide from top to bottom in it to open on the perisporium of shell (1), and breach (15) run through the top surface of shell (1).

9. The low pressure extraction system of claim 1, wherein: clamping grooves (22) are formed in the left side wall and the right side wall of the drawer (2), elastic arms (16) which are arranged at left and right intervals are arranged at the bottom of the shell (1), clamping ball heads (161) used for being clamped into the clamping grooves (22) are arranged at the inner ends of the elastic arms (16), and the clamping ball heads (161) are clamped into the clamping grooves (22) in the state that the drawer (2) moves into the shell (1); the containing position (21) is a step perforation, after the body part of the beverage capsule (4) passes through the small hole part of the step perforation, the annular edge (41) of the beverage capsule (4) is placed on the bottom surface of the large hole part of the step perforation.

10. A low pressure extraction system as claimed in claim 1, wherein: the thread transmission structure comprises internal threads arranged on the inner peripheral wall of the rotating support (5) and external threads arranged on the outer peripheral wall of the moving support (3).

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