Variable-ratio liquid mixing double-person suction pipe and working method thereof

Abstract

The invention discloses a variable-ratio liquid mixing double-person straw and a working method thereof.The variable-ratio liquid mixing double-person straw comprises two upper straw bodies and two lower straw bodies which are independently arranged, the variable-ratio liquid mixing double-person straw further comprises a liquid mixing cavity, the upper end and the lower end of the liquid mixing cavity are each provided with two connecting ports, and the lower ends of the upper straw bodies and the upper ends of the lower straw bodies are connected with the connecting ports in a sealed mode; a linkage pin valve is arranged between the corresponding upper straw and lower straw on each side and comprises an upper sealing conical column and a lower sealing conical column which are connected together, and the upper sealing conical column is arranged in the upper straw and can movably ascend and descend to open or close an upper straw channel; and the lower sealing cone is arranged in the lower suction pipe and can be linked with the upper sealing cone column to lift to open or close a lower suction pipe channel, that is, the channel can be opened when each independent upper suction pipe sucks air, and the channel is closed when the air suction is stopped. The double-person cup can be used for independently sucking one kind of beverage, can also be used for two different kinds of beverage simultaneously by two persons, and is fashionable in design and full of interestingness in use.

Description

Technical Field

[0001] This invention relates to the field of straw technology, and in particular to a variable ratio mixing double straw and its working method. Background Technology

[0002] Straws are common everyday items used for drinking beverages. Most existing straws are single-tube designs suitable for single-person consumption. However, with the increasing variety of products, double straws have emerged, suitable for couples or friends to share drinks, allowing two people to drink from the same cup simultaneously.

[0003] Existing double-straw designs are relatively simple, with the lower part of the straw only able to insert into one cup at a time. Two people must drink from the same cup simultaneously, or one person must block the other straw. This prevents enjoying different drinks from two cups at the same time, lacking the choice and fun of sharing beverages. Especially during gatherings, there's a need for product designs that allow for collaboration and sharing among friends. Summary of the Invention

[0004] To address the aforementioned problems, the present invention aims to provide a variable ratio mixing double straw and its working method, which features an ingenious mixing mechanism that allows for individual consumption of a beverage or simultaneous enjoyment by two people, and enables the mixing of different flavored beverages. The design is novel and the use of the straw is full of the fun of cooperation and sharing.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A variable-ratio mixing double pipette includes two independently configured upper pipettes and two lower pipettes, and a mixing chamber. Each end of the mixing chamber has two connection ports. The lower end of the upper pipette and the upper end of the lower pipette are sealed to these connection ports. A linkage pin valve is provided between each pair of upper and lower pipettes. The linkage pin valve includes an upper sealing cone and a lower sealing cone connected together. The upper sealing cone is located in the upper pipette and can move up and down within it to open or close the upper pipette channel. The lower sealing cone is located in the lower pipette and can move up and down in conjunction with the upper sealing cone to open or close the lower pipette channel.

[0006] Furthermore, the upper straw is provided with a sealing ring that dynamically seals with the upper sealing cone. When the upper sealing cone rises, it separates from the sealing ring to open the upper straw channel. When the upper sealing cone descends, it seals with the sealing ring to close the upper straw channel.

[0007] Furthermore, the lower straw is provided with a sealing diaphragm that dynamically seals with the lower sealing cone; after the lower sealing cone rises, it separates from the sealing diaphragm to open the lower straw channel, and after the lower sealing cone descends, it seals with the sealing diaphragm to close the lower straw channel.

[0008] Furthermore, the mixing chamber is provided with a mixing plate, and the mixing plate is provided with an arc-shaped mixing guide plate and a mixing outlet.

[0009] Furthermore, it includes a dual-compartment container for holding two liquids, wherein the dual-compartment container has two independent liquid storage compartments; the dual-compartment container is provided with a cap, and the cap is provided with corresponding vent holes.

[0010] Furthermore, as a structural improvement, a C-shaped spring is provided between each of the upper sealing cone and the lower sealing cone. Two C-shaped springs are connected back to back by a connecting plate, and two adjusting slide plates are provided between the two C-shaped springs. The end of each adjusting slide plate is provided with an adjusting inclined surface that slides in cooperation with the arc surface of the C-shaped spring. The adjusting inclined surface has an arc groove. The adjusting slide plate is connected to an adjusting push rod located outside the mixing chamber. When the adjusting slide plate is in the middle position, the arc surface of the C-shaped spring slides into the arc groove, and the openings of the C-shaped springs on the left and right sides are in a half-open state. Moving the adjusting slide plate to the left or right squeezes the C-shaped spring, causing the opening on one side to contract to its limit and the opening on the other side to open to its limit. The deformation of the C-shaped spring opening to its limit or its limit contraction pushes the corresponding upper sealing cone and lower sealing cone to move up and down in linkage, respectively closing or opening the upper suction tube and the lower suction tube channel.

[0011] Furthermore, the connecting plate and the adjusting slide plate are respectively provided with liquid flow holes or grooves.

[0012] Furthermore, as a structural improvement, the connecting rod between the upper sealing cone and the lower sealing cone is provided with a sloping boss, and a lever is provided in the mixing chamber. The lever is connected to an operating handle located outside the mixing chamber. The lever can rotate to press against the sloping boss on one side, thereby locking the linkage pin valve on that side and closing the upper and lower suction tube channels.

[0013] Furthermore, the mixing chamber is connected to a sealing cap.

[0014] According to one of the working methods of the variable ratio mixing double pipette described above, when each upper pipette on each side draws air individually, the upper sealing cone and lower sealing cone on the corresponding side rise in linkage to open the upper and lower pipette channels respectively. The liquid is drawn into the mixing chamber through the lower pipette channel and then drawn out from the upper pipette. The linkage pin valve in the other pipette remains sealed. When the upper pipettes on both sides draw air simultaneously, the upper sealing cone and lower sealing cone on both sides rise in linkage to open the upper and lower pipette channels respectively. The two lower pipettes draw liquid into the mixing chamber for mixing. The ratio of the two liquids is freely combined and adjusted by the two pipettes during the drawing process. The mixed liquid is drawn out from the upper pipettes on both sides respectively. After the upper pipette stops drawing air, the upper sealing cone and lower sealing cone descend under the action of gravity to close the upper and lower pipette channels respectively.

[0015] According to the second working method of the variable ratio mixing double straw described above, when the adjusting slide is pushed to the middle position, the arc surface of the C-shaped spring slides into the arc groove, and the openings of the C-shaped springs on both sides are in a half-open state. The linkage pin valves on both sides remain in a free state, allowing two straws to be used simultaneously to draw mixed beverages. By pushing the adjusting slide to the left or right with the adjusting push rod, the adjusting slope of the adjusting slide squeezes the C-shaped springs on the left or right side, causing the opening on one side to contract to its limit and the opening on the other side to open to its limit. This pushes the upper sealing cone and the lower sealing cone on the side with the opening at its limit contraction to retract and open the upper and lower straw channels, reducing the suction force for drawing beverages on that side. Meanwhile, the upper sealing cone and the lower sealing cone on the side with the opening at its limit expansion move relative to each other, closing the upper and lower straw channels and preventing beverages from being drawn on that side.

[0016] According to the third working method of the variable ratio mixing double straw described above, by rotating the lever with the operating handle, the lever rotates to lock the linkage pin valve on one side of the inclined boss, thereby closing the upper and lower straw channels and preventing the straw on that side from drawing beverages; when the lever is rotated to the middle position with the operating handle, the linkage pin valves on both sides remain in a free state, and the upper straw on each side can either draw air or drink beverages individually, or both straws can be used simultaneously to draw mixed beverages.

[0017] The present invention has the following beneficial effects: This invention features two independent upper straws and two lower straws connected to the upper and lower ends of a mixing chamber. Each straw contains a linkage pin valve, which can move up and down in tandem to open or close the straw channels. The distance between the upper and lower sealing cones and the sealing ring or diaphragm can be adjusted according to the suction force to control the straw channel opening size and thus the flow rate. This allows for the consumption of a single beverage or for two people to enjoy beverages mixed in their preferred proportions. The design is novel and the use is fun.

[0018] The invention features an upper straw with a sealing ring that dynamically seals with the upper sealing cone, and a lower straw with a sealing diaphragm that dynamically seals with the lower sealing cone. When the upper straw draws air, both the upper and lower sealing cones rise simultaneously, separating from the sealing ring and diaphragm to open the upper and lower straw channels. When drawing air, gravity causes both cones to descend simultaneously, sealing with the sealing ring and diaphragm to close the channels. The linkage structure is ingeniously designed. The two straws are referred to as straws A and B, respectively. In use, straws A and B can be used individually to draw their respective liquids, or they can simultaneously draw two liquids in different mixing ratios. The flow rate can be adjusted according to the suction power of straws A and B to change the ratio of the two liquids in the mixing chamber, thus allowing for the free mixing of different proportions of liquids.

[0019] The present invention provides a variety of structures for the upper sealing cone and lower sealing cone in the linkage pin valve to rise and fall, which can be selected according to needs and can meet the usage requirements of different scenarios. Attached Figure Description

[0020] Figure 1 This is a cross-sectional schematic diagram of the variable ratio mixing double pipette of Embodiment 1 of the present invention.

[0021] Figure 2 This is a three-dimensional schematic diagram of the variable ratio mixing double pipette of Embodiment 1 of the present invention.

[0022] Figure 3 for Figure 2 A three-dimensional diagram of a mandarin duck container is added.

[0023] Figure 4 This is a three-dimensional schematic diagram of the linkage pin valve of the present invention.

[0024] Figure 5 This is a partial three-dimensional schematic diagram of one of the positions of the double pipette in the variable ratio mixing of Example 2.

[0025] Figure 6 for Figure 5 A three-dimensional diagram of the rear side.

[0026] Figure 7 This is a partial three-dimensional schematic diagram of the second position of the double pipette in the variable ratio mixing of Example 2.

[0027] Figure 8 This is a three-dimensional schematic diagram of the C-shaped spring, the upper sealing cone, and the lower sealing cone in Example 2.

[0028] Figure 9 This is a three-dimensional schematic diagram of the adjustable sliding plate in Example 2.

[0029] Figure 10 This is a partial three-dimensional schematic diagram of the variable ratio mixing double pipette in Example 3.

[0030] Figure 11 for Figure 9 A three-dimensional diagram of the rear side.

[0031] Figure 12 This is a three-dimensional schematic diagram of the inclined boss provided between the upper sealing cone and the lower sealing cone 2 in Embodiment 3.

[0032] 1. Upper pipette; 2. Lower pipette; 3. Mixing chamber; 31. Connection port; 4. Linkage pin valve; 41. Upper sealing cone; 42. Lower sealing cone; 43. C-shaped spring; 44. Connecting plate; 45. Adjusting slide plate; 451. Adjusting slope; 452. Arc groove; 46. Adjusting push rod; 47. Sloping boss; 48. Lever; 49. Operating handle; 5. Sealing ring; 6. Sealing diaphragm; 7. Mixing plate; 71. Arc-shaped mixing guide plate; 72. Mixing outlet; 8. Dual container; 81. Cap; 82. Vent. Detailed Implementation

[0033] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments: Example 1:

[0034] See Figure 1-4As shown, a variable ratio mixing double pipette includes two independently set upper pipettes 1, two lower pipettes 2, and a mixing chamber 3. Each mixing chamber 3 has two connection ports 31 at its upper and lower ends. The mixing chamber 3 is connected to a sealing cap, which can be detachable for easy installation and maintenance, or the sealing cap can be fused together with the mixing chamber 3 to prevent arbitrary disassembly. The lower end of the upper pipette 1 and the upper end of the lower pipette 2 are respectively sealed to the connection ports 31. A linkage pin valve 4 is provided between each corresponding upper pipette 1 and lower pipette 2. The linkage pin valve 4 includes an upper sealing cone 41 and a lower sealing cone 42 connected together. The upper sealing cone 41 is located in the upper pipette 1 and can move up and down within it to open or close the channel of the upper pipette 1. The lower sealing cone 42 is located in the lower pipette 2 and can move up and down in conjunction with the upper sealing cone 41 to open or close the channel of the lower pipette 2. The mixing chamber 3 is equipped with a mixing plate 7, which includes an arc-shaped mixing guide plate 71 and a mixing outlet 72. It also includes a dual-liquid container 8 containing two liquids, each with two independent liquid storage compartments. Each lower straw 2 is inserted into one of these compartments. The dual-liquid container 8 has a cap 81 with corresponding vent holes 82. The mixing plate 7 facilitates the mixing of the two liquids entering the mixing chamber 3 from the dual-liquid container 8. The upper straw 1, the two lower straws 2, the mixing chamber 3, the linkage pin valve 4, and the mixing plate 7 are all made of food-grade stainless steel or food-grade plastic.

[0035] The upper straw 1 is provided with a sealing ring 5 that dynamically seals with the upper sealing cone 41. When the upper sealing cone 41 rises, it separates from the sealing ring 5, opening the channel of the upper straw 1. When the upper sealing cone 41 descends, it seals with the sealing ring 5, closing the channel of the upper straw 1. The lower straw 2 is provided with a sealing diaphragm 6 that dynamically seals with the lower sealing cone 42. The sealing diaphragm 6 can also be provided on the lower sealing cone 42. When the lower sealing cone 42 rises, it separates from the sealing diaphragm 6, opening the channel of the lower straw 2. When the lower sealing cone 42 descends, it seals with the sealing diaphragm 6, closing the channel of the lower straw 2.

[0036] In this embodiment, the working method is as follows: the two lower straws 2 are inserted into the beverage container respectively. When the upper straw 1 on each side inhales air, the upper sealing cone 41 and the lower sealing cone 42 on the corresponding side rise in linkage to open the channels of the upper straw 1 and the lower straw 2 respectively. The liquid is drawn into the mixing chamber 3 through the channel of the lower straw 2 and then drawn out from the upper straw 1. The linkage pin valve 4 in the other straw remains sealed. When the upper suction tubes 1 on both sides simultaneously draw air, the upper sealing cone 41 and the lower sealing cone 42 on both sides rise in linkage to open the channels of the upper suction tube 1 and the lower suction tube 2 respectively. The two lower suction tubes 2 draw liquid into the mixing chamber 3 for mixing. The ratio of the two liquids is freely combined and adjusted by the two suction tubes during the suction process. That is, the flow rate and the suction time can be adjusted according to the different suction forces of the two suction tubes to change the ratio of the two liquids in the mixing chamber. The mixed liquid is drawn out from the upper suction tubes 1 on both sides respectively. After the upper suction tubes 1 stop drawing air, the upper sealing cone 41 and the lower sealing cone 42 descend under the action of gravity to close the channels of the upper suction tube 1 and the lower suction tube 2 respectively.

[0037] This embodiment utilizes the gravity of the linkage pin valve 4 (including the upper sealing cone 41 and the lower sealing cone 42) to seal the straw channel. The straw channels on both sides can work independently or in conjunction. When simultaneously drawing a beverage, the mixing ratio of the liquid drawn into the straws on both sides depends on the flow rate and volume of each straw. The upper sealing cone 41 is sealed with the sealing ring 5, and the lower sealing cone 42 is sealed with the sealing diaphragm 6. The sealing diaphragm 6 is an elastic thin film with a central opening and a large elastic variable, which reduces the upward resistance of the lower sealing cone 42, thereby reducing the suction force of the straw and effectively ensuring that the upper and lower straw channels can be opened or closed simultaneously, avoiding operational chaos. Example 2:

[0038] See Figure 5-9 As shown, as an improvement, based on Embodiment 1, a C-shaped spring 43 is provided between each of the upper sealing cone 41 and the lower sealing cone 42. Two C-shaped springs 43 are connected back-to-back by a connecting plate 44. Two adjusting slide plates 45 are provided between the two C-shaped springs 43. The end of each adjusting slide plate 45 is provided with an adjusting inclined surface 451 that slides in cooperation with the arcuate surface of the C-shaped spring 43. An arcuate groove 452 is provided in the adjusting inclined surface 451. The adjusting slide plate 45 is connected to an adjusting push rod 46 located outside the mixing chamber 3. When the adjusting slide plate 45 is in the middle position, the arcuate surface of the C-shaped spring 43 slides into the arcuate groove 452, and the openings of the C-shaped springs 43 on the left and right sides are in a half-open state, allowing two straws to be used simultaneously to drink beverages. See the position state for details. Figure 5As shown; moving the adjusting slide plate 45 to the left or right squeezes the C-shaped spring 43, causing the opening on one side to contract to its limit and the opening on the other side to open to its limit. The deformation of the C-shaped spring 43, whether opening or contracting to its limit, pushes the corresponding upper sealing cone 41 and lower sealing cone 42 to move up and down in a coordinated manner, thereby closing or opening the channels of the upper suction tube 1 and the lower suction tube 2 respectively. See the position status for details. Figure 7 As shown; the connecting plate 44 and the adjusting slide plate 45 are respectively provided with liquid flow holes or grooves. The liquid drawn by the two lower suction tubes 2 is fully mixed through the liquid flow holes or grooves in the connecting plate 44 and the adjusting slide plate 45 and then enters the upper part of the mixing chamber 3 for normal suction.

[0039] In this embodiment, the working method is as follows: When the adjusting slide plate 45 is pushed to the middle position, the arc surface of the C-shaped spring 43 slides into the arc groove 452, and the openings of the C-shaped spring 43 on both sides are in a half-open state. The linkage pin valves 4 on both sides remain in a free state, allowing two straws to be used simultaneously to drink the mixed beverage. When the adjusting slide plate 45 is pushed to the left or right by the adjusting push rod 46, the adjusting inclined surface 451 of the adjusting slide plate 45 squeezes the C-shaped spring 43 on the left or right side, causing the opening on one side to contract to its limit and the opening on the other side to open to its limit. This pushes the upper sealing cone 41 and the lower sealing cone 42 on the side with the opening at its limit contraction to retract and open the upper and lower straw channels, reducing the suction force required to drink the beverage on that side and making it more convenient to drink. Meanwhile, the upper sealing cone 41 and the lower sealing cone 42 on the side with the opening at its limit expansion move relative to each other and close the upper and lower straw channels, preventing the beverage from being drunk on that side.

[0040] In this embodiment, the elastic force of the C-shaped spring 43 is controlled by the adjusting slide plate 45, which facilitates the opening or closing of the straw channel by controlling the upper sealing cone 41 and the lower sealing cone 42 (linkage pin valve 4) from the inside. The straw channel can be closed without relying on the gravity of the linkage pin valve 4. The C-shaped spring 43 works reliably and ensures that there is no air leakage after the straw channel is closed. Example 3:

[0041] See Figure 10-12 As shown, as an improvement, based on Embodiment 1, the connecting rod between the upper sealing cone 41 and the lower sealing cone 42 is provided with a sloping boss 47, and the mixing chamber 3 is provided with a lever 48. The lever 48 is connected to an operating handle 49 located outside the mixing chamber 3. The lever 48 can rotate to press against the sloping boss 47 on one side, thereby locking the linkage pin valve 4 on that side and closing the channels of the upper suction tube 1 and the lower suction tube 2 to prevent accidental operation. When the lever 48 is rotated to the middle position, it will not restrict the operation of the linkage pin valves 4 on both sides. The liquid drawn by the two lower suction tubes 2 is fully mixed by the mixing plate 7 and enters the upper part of the mixing chamber 3 for normal suction.

[0042] In this embodiment, the working method is as follows: by operating the handle 49 to rotate the lever 48, the lever 48 rotates to press against the inclined boss 47 on one side to lock the linkage pin valve 4 on that side, so that the channels of the upper straw 1 and the lower straw 2 are closed, and the straw on that side cannot drink beverages; when the lever 48 is rotated to the middle position by operating the handle 49, the linkage pin valves 4 on both sides remain in a free state, and the upper straw 1 on each side can either inhale air or drink beverages individually, or use both straws at the same time to drink mixed beverages.

[0043] In this embodiment, the lever 48 is used for locking, and the straw channel is closed without relying on the gravity of the linkage pin valve 4. This allows the linkage pin valve 4 (including the upper sealing cone 41 and the lower sealing cone 42) to be as lightweight as possible, thereby reducing the inhalation force when drinking beverages.

[0044] The above description is merely a specific embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made based on the content of the present invention specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A variable ratio mixing double pipette, comprising two independently configured upper pipettes (1) and two lower pipettes (2), characterized in that: The system includes a mixing chamber (3), with two connection ports (31) at both the upper and lower ends. The lower end of the upper suction tube (1) and the upper end of the lower suction tube (2) are respectively sealed to the connection ports (31). A linkage pin valve (4) is provided between the upper suction tube (1) and the lower suction tube (2) on each side. The linkage pin valve (4) includes an upper sealing cone (41) and a lower sealing cone (42) connected together. The upper sealing cone (41) is located in the upper suction tube (1) and can move up and down in it to open or close the channel of the upper suction tube (1). The lower sealing cone (42) is located in the lower suction tube (2) and can move up and down in conjunction with the upper sealing cone (41) to open or close the channel of the lower suction tube (2).

2. The variable ratio mixing double pipette according to claim 1, characterized in that: The upper straw (1) is provided with a sealing ring (5) that dynamically seals with the upper sealing cone (41). When the upper sealing cone (41) rises, it separates from the sealing ring (5) to open the channel of the upper straw (1). When the upper sealing cone (41) falls, it seals with the sealing ring (5) to close the channel of the upper straw (1).

3. The variable ratio mixing double pipette according to claim 1, characterized in that: The lower straw (2) is provided with a sealing diaphragm (6) that dynamically seals with the lower sealing cone (42); after the lower sealing cone (42) rises, it separates from the sealing diaphragm (6) to open the channel of the lower straw (2); after the lower sealing cone (42) falls, it seals with the sealing diaphragm (6) to close the channel of the lower straw (2).

4. The variable ratio mixing double pipette according to claim 1, characterized in that: The mixing chamber (3) is provided with a mixing plate (7), and the mixing plate (7) is provided with an arc-shaped mixing guide plate (71) and a mixing outlet (72).

5. The variable ratio mixing double pipette according to claim 1, characterized in that: The container (8) contains two liquids and has two separate liquid storage compartments. The container (8) has a cap (81) and a corresponding vent (82).

6. The variable ratio mixing double pipette according to claim 1, characterized in that: A C-shaped spring (43) is provided between each of the upper sealing cone (41) and the lower sealing cone (42). The two C-shaped springs (43) are connected back to back by a connecting plate (44). Two adjusting slide plates (45) are provided between the two C-shaped springs (43). The end of the adjusting slide plate (45) is provided with an adjusting inclined surface (451) that slides in cooperation with the arc surface of the C-shaped spring (43). The adjusting inclined surface (451) is provided with an arc groove (452). The adjusting slide plate (45) is connected to an adjusting push rod (46) located outside the mixing chamber (3). 45) When in the middle position, the arc surface of the C-shaped spring (43) slides into the arc groove (452), and the openings of the C-shaped spring (43) on the left and right sides are in a half-open state; when the adjusting slide (45) is moved to the left or right, the C-shaped spring (43) is squeezed to make the opening on one side limit contraction and the opening on the other side limit opening. The opening of the C-shaped spring (43) is deformed by the limit opening or limit contraction, which pushes the corresponding upper sealing cone (41) and lower sealing cone (42) to lift and lower, respectively closing or opening the channels of the upper suction tube (1) and the lower suction tube (2).

7. The variable ratio mixing double pipette according to claim 1, characterized in that: The connecting rod between the upper sealing cone (41) and the lower sealing cone (42) is provided with a sloping boss (47). The mixing chamber (3) is provided with a lever (48). The lever (48) is connected to an operating handle (49) located outside the mixing chamber (3). The lever (48) can rotate to press the sloping boss (47) on either side, thereby locking the linkage pin valve (4) on that side and closing the channels of the upper suction tube (1) and the lower suction tube (2).

8. The working method of the variable ratio mixing double pipette according to claim 1, characterized in that: When each of the upper suction tubes (1) draws air individually, the upper sealing cone (41) and lower sealing cone (42) on the corresponding side rise in tandem to open the channels of the upper suction tube (1) and the lower suction tube (2), respectively. The liquid is drawn into the mixing chamber (3) through the channel of the lower suction tube (2) and then drawn out from the upper suction tube (1). The linkage pin valve (4) in the other suction tube remains sealed. When the upper suction tubes (1) on both sides draw air simultaneously, the upper sealing cone (41) and lower sealing cone (42) on both sides rise in tandem to open the channels of the upper suction tube (1) and the lower suction tube (2). Do not open the channels of the upper straw (1) and the lower straw (2). The two lower straws (2) respectively draw the two liquids into the mixing chamber (3) for mixing. The ratio of the two liquids is freely combined and adjusted by the two straws during the suction process. The mixed liquids are drawn out from the upper straws (1) on both sides. After the upper straw (1) stops sucking, the upper sealing cone (41) and the lower sealing cone (42) descend under the action of gravity and close the channels of the upper straw (1) and the lower straw (2) respectively.

9. The working method of the variable ratio mixing double pipette according to claim 6, characterized in that: When the adjusting slide (45) is pushed to the middle position, the arc surface of the C-shaped spring (43) slides into the arc groove (452), the openings of the C-shaped spring (43) on both the left and right sides are in a half-open state, and the linkage pin valves (4) on both sides remain in a free state, so that two straws can be used at the same time to suck up the mixed beverage. The adjusting slide (45) is pushed to the left or right by the adjusting push rod (46). The adjusting slope (451) of the adjusting slide (45) squeezes the C-shaped spring (43) on the left or right side, causing the opening limit on one side to contract and the opening limit on the other side to open. The upper sealing cone (41) and the lower sealing cone (42) on the side with the opening limit contraction move in opposite directions to open the upper and lower straw channels, reducing the suction force for drinking on that side. Meanwhile, the upper sealing cone (41) and the lower sealing cone (42) on the side with the opening limit opening move in opposite directions to expand and close the upper and lower straw channels, preventing the drinking on that side from being absorbed.

10. The working method of the variable ratio mixing double pipette according to claim 7, characterized in that: By operating the handle (49) to rotate the lever (48), the lever (48) rotates to press against the inclined boss (47) on one side, locking the linkage pin valve (4) on that side, so that the upper straw (1) and lower straw (2) channels on that side are closed, and the straw on that side cannot suck up the beverage; when the lever (48) is rotated to the middle position by operating the handle (49), the linkage pin valves (4) on both sides remain in a free state, and each straw can suck up air and drink beverages individually, or can use two straws at the same time to suck up mixed beverages.

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