An extraction needle applied to an extractor of a beverage machine

Abstract

This application relates to an extraction needle for use in a beverage machine extractor, comprising an extraction needle body, which includes a step, a main body, a connecting shaft, and a needle. One end of the step is connected to the main body, and the outer circumference of the main body is provided with external threads. One end of the main body is provided with a connecting shaft, which has symmetrically provided opening grooves on its circumference. The other end of the step is provided with a needle, which has a through hole inside and a lateral hole that can be formed on its side wall. The main body has a countersunk hole, the end of which communicates with the through hole. The needle may have a connecting cone, the small end of which is connected to the top point. The top point is conical with a bevel to form a needle tip, and its surface can be hardened. Symmetrical keyways are provided on both sides of the outer circumference of the main body, and blind holes are provided inside. A central shaft is provided at the center of the blind holes. Several reinforcing ribs are provided circumferentially between the outer circumference of the central shaft and the inner circumference of the blind holes to form a cavity. An internally threaded hole may be provided at the end of the central shaft. This application has the advantages of stable structure, reliable connection, good piercing effect, and convenient fluid transportation and installation.

Description

Technical Field

[0001] This application relates to the field of beverage preparation equipment technology, and in particular to an extraction needle assembly for use in beverage machines. Background Technology

[0002] With the fast pace of modern life, instant beverages are widely used in homes, offices, and commercial settings due to their convenience and consistent taste. Among these, beverage preparation methods using capsules and beverage machines are favored by users for their simplicity and hygiene. Currently, most beverage capsules on the market are single-use, requiring a beverage machine to puncture the capsule and inject high-temperature, high-pressure water or gas during extraction, causing the beverage powder inside to dissolve and flow out. However, in existing technologies, some capsule structures have poor sealing or unreasonable inner and outer cap designs, easily leading to uneven pressure, poor flow, and powder residue, affecting the taste and extraction efficiency of the beverage.

[0003] In addition, some capsule structures lack effective guidance for powder flow paths, which can easily cause powder blockage or scattering, reducing safety and machine compatibility. Utility Model Content

[0004] In order to improve the effective guidance of powder flow path and enhance the safety and machine compatibility, this application provides an extraction needle for use in beverage machine extractors.

[0005] The extraction needle for use in a beverage machine extractor provided in this application adopts the following technical solution: An extraction needle for use in a beverage machine extractor includes an extraction needle body, wherein the extraction needle body comprises a step, a main body, a connecting shaft, and a needle. One end of the step is connected to the main body, and the outer circumference of the main body is provided with external threads; A connecting shaft is provided at one end of the main body; A needle is provided at the other end of the step, and a through hole is provided inside the needle; The main body has a countersunk hole, and the end of the countersunk hole is connected to the through hole.

[0006] By adopting the above technical solution, the extraction needle body is composed of a step, a main body, a connecting shaft, and a needle. The structural fit between these components ensures the overall stability and sealing. One end of the step connects to the main body, effectively limiting the positioning depth of the extraction needle during installation, ensuring precise assembly of the needle body in the extractor, and preventing poor sealing or liquid leakage due to misalignment. The outer circumference of the main body is provided with external threads, which allows for easy and reliable fastening of the extraction needle to the extractor body, ensuring strong pressure resistance and durability during use, and facilitating later disassembly, replacement, and maintenance. One end of the main body is provided with a connecting shaft, facilitating precise connection between the extraction needle and the internal transmission or positioning mechanism of the beverage machine, improving assembly compatibility and stability. The needle at the other end of the step 1 has a through hole inside, which allows for precise connection during extraction. The process ensures smooth flow of beverage liquids or water, preventing uneven extraction or abnormal pressure caused by blockages. The main body has a countersunk hole, the end of which connects to a through hole. The through-flow channel structure allows liquid to flow smoothly from the main body into the through hole and then out through the needle, achieving efficient fluid transfer and stable flow guidance. It can buffer the impact pressure during fluid flow to a certain extent, avoiding needle damage or beverage machine malfunctions caused by instantaneous high pressure, and improving the overall safety and reliability of operation. It not only ensures efficient liquid introduction and export when extracting beverages such as coffee and milk tea, but also has good sealing performance, convenient installation and durability. It solves the problems of easy loosening, blockage and poor sealing of traditional extraction needles, improving the extraction stability, taste consistency and service life of beverage machines.

[0007] Optionally, the needle is provided with a connecting cone, the large end of which is integral with the end face of the step, and the small end of which is integrally connected with the tip of the upper end.

[0008] By adopting the above technical solutions, the structural strength and overall stability between the needle and the extraction needle body are enhanced, and it can also play a guiding and positioning role, making the docking of the needle body with the capsule or filter cup more accurate during the extraction process, avoiding misalignment and damage. The transition shape of the connecting cone can effectively disperse the pressure during liquid flow, reduce impact, and ensure smooth introduction and export of the extraction fluid, thereby improving sealing, durability and the stability of the extraction process.

[0009] Optionally, the connecting shaft is provided with symmetrically arranged opening slots around its circumference.

[0010] By adopting the above technical solutions, the elastic fit of the connection parts is enhanced, enabling the connecting shaft to better fit with the corresponding snap-fit ​​or positioning structure during assembly, thereby improving the stability and reliability of the connection.

[0011] Optionally, keyways are provided on both sides of the outer circumference of the main body in symmetrical positions.

[0012] By adopting the above technical solution, a key fit with the corresponding installation structure is achieved, ensuring that the extraction needle can be accurately positioned during assembly and preventing rotational slippage, thereby improving the reliability of fixation and the safety of use. The symmetrically arranged keyways maintain balance under stress, avoiding loosening or damage caused by off-center loading, and facilitating subsequent disassembly and replacement, improving maintenance efficiency, and ensuring that the extraction needle can maintain a stable assembly state and good sealing performance during long-term operation, thereby improving the consistency and stability of beverage machine extraction.

[0013] Optionally, the main body is provided with a blind hole, and a central shaft is provided at the center of the blind hole. Several reinforcing ribs are provided circumferentially between the outer circumference of the central shaft and the inner circumference of the blind hole. The two ends of the reinforcing ribs are fixedly connected to the outer circumference of the central shaft and the inner circumference of the blind hole, respectively. The space between the reinforcing ribs is an empty space.

[0014] By adopting the above technical solutions, the overall strength and deformation resistance of the main body are significantly improved. While maintaining structural stability, the weight is reduced and material consumption is decreased. The uniform distribution of reinforcing ribs can effectively disperse the stress and avoid cracks or damage caused by local stress concentration. The empty chamber plays a buffering and pressure-reducing role, improving the stability when the fluid passes through, thereby ensuring the durability and reliability of the extraction needle in long-term operation.

[0015] Optionally, the tip is conical with the small end facing outwards, and one side of the outer circumference of the conical tip is provided with a slope so that the outward end of the tip is a spike.

[0016] By adopting the above technical solutions, the penetration power of the needle when piercing the capsule membrane or filter membrane is significantly improved, the piercing resistance is reduced, and the puncture holes are concentrated and regularly shaped, avoiding membrane tearing or debris shedding. This helps to establish a fast and smooth extraction channel, improves extraction efficiency and fluid flow stability, and the needle tip can also reduce equipment energy consumption and wear, extend the service life of the extraction needle, and ensure the consistency and purity of the beverage's taste.

[0017] Optionally, the sidewall of the needle is provided with at least one lateral hole that communicates with the through hole.

[0018] By adopting the above technical solution, a multi-directional liquid outlet channel is formed during the extraction process, allowing the liquid to flow out not only through the top but also simultaneously through the side holes. This increases the liquid outlet area and flow rate, avoiding blockage or uneven flow rate caused by a single outlet. It helps improve the uniformity and efficiency of extraction, allowing the beverage to fully release its flavor in a short time. The side holes also play a role in diverting and reducing pressure, lowering the local pressure at the top puncture point and extending the service life of the capsule membrane and extraction needle.

[0019] Optionally, the bottom of the opening groove is arc-shaped, and its depth is uniformly distributed along the axial direction of the connecting shaft.

[0020] By adopting the above technical solutions, the stress concentration problem caused by the right-angled groove bottom can be effectively avoided, the fatigue resistance and overall strength of the groove structure can be improved, and better stress uniformity can be achieved during the connection shaft stress or assembly process, which helps to reduce friction and wear and extend the service life of parts.

[0021] Optionally, the end of the central shaft is provided with an internal threaded hole, the axis of which coincides with the axis of the extraction needle body.

[0022] By adopting the above technical solution, a reliable threaded connection interface can be provided for the extraction needle, which facilitates precise coaxial connection with other components, ensures the structural stability and sealing after assembly, makes the connection process more convenient, improves the assembly accuracy and overall concentricity between parts, avoids vibration or wear caused by eccentricity, and facilitates the subsequent expansion of the functional interface of the extraction needle, improving its versatility and maintenance convenience.

[0023] Optionally, the conical surface of the tip is hardened, and its surface hardness is higher than that of the needle body.

[0024] By adopting the above technical solution, the surface hardness of the tip is made higher than that of the needle body, which significantly improves the wear resistance and deformation resistance of the tip when piercing the capsule membrane or filter membrane, enhances the piercing efficiency, ensures that it remains sharp after long-term use, and the hardened surface effectively reduces wear and passivation caused by repeated piercing, extends the service life of the needle, reduces the resistance and debris generated during the piercing process, ensures stable piercing holes and unobstructed fluid channels, and improves the reliability and consistency of beverage extraction.

[0025] In summary, this application includes at least one of the following beneficial technical effects: The extraction needle body has a tight fit, ensuring overall stability and good sealing performance, and preventing liquid leakage and abnormal pressure.

[0026] The design of the steps connecting to the main body, the external threads on the main body, the keyways on both sides, and the connecting shaft ensures precise installation and positioning of the extraction needle in the beverage machine, preventing rotation or offset and improving assembly compatibility and stability.

[0027] The main body's internal submerged hole, needle through hole, needle side hole, and multi-directional liquid outlet design form a through flow channel, ensuring smooth liquid introduction and export, improving extraction efficiency and uniformity, while buffering pressure and reducing impact damage.

[0028] The top-conical structure, piercing tip design, and surface hardening treatment improve the efficiency of piercing capsule membranes or filter membranes, reduce resistance, ensure neat piercing holes, stable fluid channels, and extend the service life of the piercing needle.

[0029] The blind hole center axis and reinforcing ribs, the rounded bottom of the open slot, and the uniformly distributed design effectively disperse stress, enhance the resistance to deformation and fatigue performance, while reducing weight and improving durability.

[0030] The design of the central shaft's internal threaded hole and the connecting shaft's open slot provides a reliable connection interface, facilitating disassembly, replacement, and functional expansion, thereby improving the assembly accuracy of parts and maintenance efficiency.

[0031] The combined effect of various structural optimizations ensures that the extraction needle maintains stable operation during long-term use, thereby improving the stability of beverage machine extraction, consistency of taste, and service life of the equipment.

[0032] A new type of beverage capsule with optimized structure, reliable sealing, suitability for high-pressure gas injection environments, and good flow guidance function improves the use effect and user experience of capsule beverages. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of an extraction needle applied to an extractor in a beverage machine, according to an embodiment of this application.

[0034] Figure 2 This is a front view of an extraction needle applied to an extractor in a beverage machine according to an embodiment of this application.

[0035] Figure 3 yes Figure 2 Top view.

[0036] Figure 4 yes Figure 2 The illustration Figure 2 .

[0037] Figure 5 yes Figure 4 Left view.

[0038] Figure 6 yes Figure 5 A three-dimensional image.

[0039] Explanation of reference numerals in the attached drawings: 100, extraction needle body; 1, step; 2, main body; 3, external thread; 4, connecting shaft; 5, needle; 51, through hole; 52, connecting cone; 53, center point; 6, keyway; 7, blind hole; 8, open groove; 9, central shaft; 10, reinforcing rib; 11, empty chamber; 12, countersunk hole. Detailed Implementation

[0040] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0041] This application discloses an extraction needle used in the extractor of a beverage machine. (Refer to...) Figures 1-6The device includes an extraction needle body 100, which comprises a step 1, a main body 2, a connecting shaft 4, and a needle 5. The components are tightly fitted together to ensure overall stability and sealing. One end of the step 1 connects to the main body 2, and the outer circumference of the main body 2 has an external thread 3, which accurately limits the positioning depth of the extraction needle during installation, ensuring precise placement of the needle within the beverage machine's extractor and preventing misalignment leading to poor sealing or liquid leakage. One end of the main body 2 has a connecting shaft 4, which can precisely connect to the internal transmission or positioning mechanism of the beverage machine, further enhancing assembly stability and compatibility. The other end of the step 1 has a needle 5, which has a through hole 51. The main body 2 has a countersunk hole 12, the end of which connects to the through hole 51, forming a through-flow channel structure, allowing liquid to flow freely during extraction. The liquid flows smoothly into the through-hole and then out through the needle, achieving efficient liquid transfer and uniform flow. This effectively avoids extraction instability caused by blockage or uneven flow rate. It also buffers the impact pressure generated during liquid flow, reducing damage to the needle or beverage machine caused by instantaneous high pressure, and improving the overall safety and reliability of operation. The extraction needle not only ensures efficient liquid introduction and export when the beverage machine is extracting coffee, milk tea, and other beverages, but also has good sealing performance, easy assembly, and durability. It solves the problems of easy loosening, blockage, and poor sealing of traditional extraction needles, improving the stability of the beverage machine's extraction process, the consistency of beverage taste, and the overall service life of the equipment. It achieves efficient liquid introduction and export, ensuring the stability and safety of the extraction process, and is suitable for coffee machines, milk tea machines, and other capsule beverage preparation equipment.

[0042] The needle 5 consists of three parts, including a tip 53, a spiral lifting structure including an external thread 3, and a tail including a water pipe connection part with a connecting shaft 4. The working steps of the extraction needle body 100 on the whole machine are as follows: 1. When the extractor places the capsule at the extraction position, the grating can detect whether the capsule is accurately positioned; 2. If the grating detects that the capsule is accurately positioned, the lifting motor of the extractor is activated, and the rotation of the lifting mechanism drives the gears to slowly lower the needle 5; 3. When the needle 5 presses down on the capsule, the lifting motor will encounter resistance, and the current of the lifting motor will increase. As the current value of the lifting motor exceeds the set value, the lifting motor will stop working. 4. At this time, the downward pressure of the needle 5 is large enough to ensure that the capsule does not leak or burst, and the dosage is accurate. 5. Once the needle is accurately positioned, the electromagnetic pump starts supplying water to make the beverage; 6. Once the beverage preparation is complete, the positive and negative terminals of the lifting motor are reversed, power is supplied in reverse, and the lifting motor is raised. 7. Once the lifting motor has reached the designated position, the capsule will be ejected.

[0043] like Figures 1 to 6 As shown, the extraction needle in this embodiment includes an extraction needle body 100. The extraction needle body 100 consists of a step 1, a main body 2, a connecting shaft 4, and a needle 5. One end of the step 1 is connected to the main body 2, and the outer circumference of the main body 2 is provided with an external thread 3 for fixing the extraction needle to the beverage machine's extractor body, achieving a stable installation. One end of the main body 2 is provided with a connecting shaft 4, which can cooperate with the internal transmission mechanism or positioning structure of the beverage machine to ensure the assembly accuracy and stability of the extraction needle. The other end of the step 1 is provided with a needle 5, and the needle 5 has a through hole 51 inside, which allows the liquid to flow smoothly from the main body 2 to the needle 5. The main body 2 has a countersunk hole 12 inside, and the end of the countersunk hole 12 communicates with the through hole 51 of the needle 5, forming a through flow channel structure, allowing the liquid to flow smoothly from the main body 2 into the through hole 51 and then out through the needle.

[0044] The needle 5 is equipped with a connecting cone 52. The large end of the connecting cone 52 is integrated with the end face of the step 1, and the small end is integrated with the tip 53. The setting of the connecting cone 52 enhances the structural strength and overall stability between the needle and the extraction needle body. It plays a guiding and positioning role in the extraction process, making the contact between the needle 5 and the capsule or filter cup more accurate and preventing deviation that could cause damage. The transition shape of the connecting cone 52 can effectively disperse the pressure during liquid flow, reduce impact, ensure smooth liquid introduction and export, and improve sealing and durability.

[0045] The tip 53 is conical with the small end facing outwards. One side of the outer circumference of the conical surface is beveled, so that the outward-facing end of the tip forms a spike. The spike can improve the penetration of the needle into the capsule membrane or filter membrane, reduce the puncture resistance, and at the same time ensure that the puncture hole position is concentrated and the shape is regular, avoiding membrane tearing or debris falling off. The surface of the conical surface of the tip 53 is hardened, and its surface hardness is higher than that of the needle body 5, which enhances wear resistance and deformation resistance. Even after long-term use, it can still maintain its sharpness, improve puncture efficiency, extend service life, and ensure that the extraction liquid channel is unobstructed.

[0046] At least one lateral hole 54 communicating with the through hole 51 is opened on the side wall of the needle 5, forming a multi-directional liquid outlet channel during the extraction process, so that the liquid can not only flow out from the tip of the needle, but also be discharged from the lateral hole at the same time. The lateral hole 54 increases the liquid outlet area and flow rate, avoids blockage or uneven flow rate caused by a single outlet, and helps to improve the uniformity and efficiency of extraction. At the same time, it reduces the local pressure of the tip hole, extends the service life of the capsule membrane and the needle, and ensures the consistency of the beverage taste.

[0047] The connecting shaft 4 is used to connect the extraction needle body to the internal transmission or positioning mechanism of the beverage machine. The connecting shaft 4 has symmetrically arranged opening grooves 8 around its circumference. The bottom of the groove is arc-shaped and the depth is evenly distributed along the axial direction. The design of the opening grooves 8 enhances the elastic fit of the connecting shaft, allowing the connecting shaft to better fit with the snap-fit ​​or positioning structure during assembly, improving stability and reliability. The arc-shaped groove bottom avoids right-angle stress concentration, improving fatigue resistance. The evenly distributed groove depth enhances the balance of force, reduces friction and wear, and extends the overall service life of the connecting shaft and the extraction needle.

[0048] The outer circumference of the main body 2 is provided with symmetrical keyways 6 on both sides for keying with the mounting structure. This ensures that the extraction needle can be accurately positioned during assembly, preventing rotation or displacement, improving the reliability of fixation and the safety of use. The symmetrically arranged keyways maintain balance under stress, avoiding loosening or damage caused by off-center loading. At the same time, they facilitate disassembly and maintenance, improving the convenience of use.

[0049] The main body 2 has a blind hole 7 inside, and a central shaft 9 is located at the center of the blind hole. Several reinforcing ribs 10 are evenly arranged between the central shaft 9 and the inner wall of the blind hole 7. The two ends of the reinforcing ribs 10 are fixedly connected between the outer circumference of the central shaft 9 and the inner wall of the blind hole 7, forming a cavity 11. The reinforcing ribs 10 distribute the force, enhance the overall strength and deformation resistance of the main body, and the cavity 11 reduces the weight and acts as a buffer under the action of liquid flow or external force, improving the stability and durability of fluid flow. The end of the central shaft 9 has an internal threaded hole 13, whose axis coincides with the axis of the extraction needle body, which can be coaxially connected with other components to achieve structural stability and precise assembly, while also facilitating functional expansion and maintenance.

[0050] The extraction needle of this application has the following technical advantages: 1. Stable structure and excellent sealing: The steps, main body, connecting shaft and needle form a stable overall structure to prevent liquid leakage and abnormal pressure; 2. High puncture efficiency: The conical tip, piercing point, and hardened treatment design ensure that the piercing needle can easily penetrate the capsule membrane or filter membrane, resulting in concentrated and neat punctures and unobstructed fluid channels; 3. Uniform liquid flow: The through hole 51, the side hole 54 and the countersunk hole 12 form a through flow channel, which improves the uniformity of fluid flow rate and extraction efficiency, buffers pressure and reduces impact damage; 4. High durability: Reinforcing ribs, hollow chambers, arc-shaped openings, and uniformly distributed structures effectively disperse stress, enhance resistance to deformation and fatigue, and extend service life; 5. Long-term reliability: The overall structural optimization ensures that the extraction needle operates stably under high pressure and high temperature conditions for a long time, improving the stability of beverage machine extraction and the consistency of taste.

[0051] In application, the needle 5 is equipped with a connecting cone 52, the tip 53 has a cone angle of 30°-35°, and the surface is hardened to HRC 58. It is suitable for high-pressure extraction scenarios to ensure rapid and uniform liquid distribution and is suitable for espresso or milk tea extraction machines. The needle 5 can also adopt a dual-side hole design, and a micro flow guide groove is added to the through hole 51 so that the liquid forms a rotating flow when passing through the needle, which improves the uniformity of extraction and is suitable for multi-powder mixed capsule beverages.

[0052] The implementation principle of an extraction needle applied to a beverage machine extractor according to an embodiment of this application is as follows: through overall structural optimization and fluid guidance, efficient liquid introduction and export, uniform flow, and precise piercing of capsules or filter membranes are achieved, while ensuring assembly stability, sealing, and long-term durability. The extraction needle body includes a step, a main body, a connecting shaft, and a needle. Each part fits tightly to form a stable overall structure. One end of the step is connected to the main body. The outer circumference of the main body is provided with external threads and symmetrical keyways. Through thread fixing and keyway cooperation with the beverage machine extractor body, the needle is accurately positioned and firmly fixed during installation, preventing rotation or displacement, thereby ensuring liquid sealing and installation stability. Qualitatively, the main body has a connecting shaft at one end, with symmetrically arranged open grooves around its circumference. The bottom of the grooves is arc-shaped and evenly distributed along the axial direction. It is connected to the internal transmission or positioning mechanism of the beverage machine through an elastic fit, which improves the assembly reliability and durability, and disperses the force, reducing the risk of fatigue. The main body has a countersunk hole inside, and the end of the countersunk hole is connected to the through hole inside the needle, forming a through flow channel structure. This allows the liquid to flow smoothly from the main body into the through hole of the needle and then out through the needle, avoiding uneven flow rate or blockage. This improves the uniformity of liquid flow and extraction efficiency. The connecting cone of the needle plays a guiding and positioning role during the insertion of the capsule or filter cup. At the same time, the transition shape disperses the liquid flow pressure and buffers the impact force.The tip is conical, with the smaller end facing outwards. A beveled surface on the outer side of the conical surface forms the spike. The tip surface is hardened to a higher hardness than the needle body, ensuring the needle maintains sharpness even after long-term use. This allows for efficient piercing of capsule or filter membranes, reducing damage and debris shedding, while ensuring concentrated and regular punctures. At least one lateral hole communicating with the through-hole is formed on the side wall of the needle, creating a multi-directional liquid outlet channel. Liquid is discharged from the lateral hole, increasing the outlet area and flow rate, uniformly guiding the flow, reducing local pressure, and improving extraction uniformity and efficiency. Reinforcing ribs are evenly distributed between the central axis of the main body and the inner wall of the blind hole, forming a cavity. The reinforcing ribs disperse stress, enhancing the overall strength and deformation resistance of the main body. The cavity reduces weight and acts as a buffer under liquid flow or external forces, improving fluid flow stability and durability. During application, when the capsule is accurately positioned, a grating detection triggers the lifting motor to start, carrying... The moving needle is slowly pressed down, and the lifting motor controls the downward pressure through current feedback, ensuring sufficient pressure to prevent leakage and bursting of the capsule. Simultaneously, the liquid flows out evenly through the through-flow channel and multi-directional holes, achieving efficient extraction. After extraction, the lifting motor reverses power to lift the needle, ejecting the capsule and completing the automated operation cycle. Through the above structure and working principle, the extraction needle achieves stable installation, high puncture efficiency, uniform liquid flow, durability, reliability, and long-term stable operation. It is suitable for high-pressure extraction scenarios, such as coffee machines, milk tea machines, and multi-powder mixed capsule beverage preparation equipment. It ensures efficient introduction and export of extracted liquid, maintains consistent beverage taste, and improves equipment lifespan and safety. It solves the technical problems of traditional extraction needles, such as easy loosening, clogging, and poor sealing, achieving a comprehensive technical effect of efficient liquid guidance, precise assembly, safe operation, and long-term reliability.

[0053] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An extraction needle for use in a beverage machine extractor, characterized in that: It includes an extraction needle body (100), which comprises a step (1), a main body (2), a connecting shaft (4), and a needle (5). One end of the step (1) is connected to the main body (2), and the outer circumference of the main body (2) is provided with an external thread (3); A connecting shaft (4) is provided at one end of the main body (2); The other end of the step (1) is provided with a needle (5), and the needle (5) is provided with a through hole (51); The main body (2) is provided with a countersunk hole (12), and the end of the countersunk hole (12) is connected to the through hole (51).

2. The extraction needle for use in a beverage machine extractor according to claim 1, characterized in that: The needle (5) is provided with a connecting cone (52), the large end of the connecting cone (52) is integral with the end face of the step (1), and the small end of the connecting cone (52) is integrally connected with the top tip (53) at the upper end.

3. The extraction needle for use in a beverage machine extractor according to claim 1, characterized in that: The connecting shaft (4) has symmetrically arranged opening slots (8) around its circumference.

4. The extraction needle for use in a beverage machine extractor according to claim 1, characterized in that: The main body (2) has keyways (6) on both sides of its outer circumference that are symmetrically positioned.

5. The extraction needle for use in a beverage machine extractor according to claim 4, characterized in that: The main body (2) is provided with a blind hole (7). A central shaft (9) is provided at the center of the blind hole (7). Several reinforcing ribs (10) are provided in the circumferential direction between the outer circumference of the central shaft (9) and the inner circumference of the blind hole (7). The two ends of the reinforcing ribs (10) are fixedly connected to the outer circumference of the central shaft (9) and the inner circumference of the blind hole (7), respectively. There is a cavity (11) between the reinforcing ribs (10).

6. The extraction needle for use in a beverage machine extractor according to claim 2, characterized in that: The tip (53) is conical with the small end facing outward. One side of the outer circumference of the conical tip (53) is provided with a slope so that the outward end of the tip (53) is a spike.

7. An extraction needle for use in a beverage machine extractor according to claim 1 or 2, characterized in that: The side wall of the needle (5) is provided with at least one lateral hole (54) that communicates with the through hole (51).

8. The extraction needle for use in a beverage machine extractor according to claim 3, characterized in that: The bottom of the opening groove (8) is arc-shaped, and its depth is evenly distributed along the axial direction of the connecting shaft (4).

9. An extraction needle for use in a beverage machine extractor according to claim 5, characterized in that: The end of the central shaft (9) is provided with an internal threaded hole (13), the axis of which coincides with the axis of the extraction needle body (100).

10. An extraction needle for use in a beverage machine extractor according to claim 6, characterized in that: The conical surface of the tip (53) is hardened, and its surface hardness is higher than that of the needle (5) body.

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