Coffee extraction system

Abstract

The utility model relates to food processing equipment technical field especially, relates to a coffee extraction system, including extraction tank, the top cover of through linear drive piece up and down movable installation in the top of extraction tank and the baffle of setting in the inside of extraction tank, a plurality of liquid outlet holes are arranged on the baffle and penetrate, the bottom of top cover is provided with the cloth liquid cavity that is suitable for extraction tank, and is provided with steam import on the cloth liquid cavity, the bottom of cloth liquid cavity penetrates and is provided with a plurality of steam exports, the bottom of extraction tank is fixed with the base, and the inside of base is provided with the linear drive mechanism of propelling baffle inside extraction tank moves up and down, through setting linear drive mechanism propels baffle and slides up and down in the inside of extraction tank, can extrude the powder cake of even thickness with the coffee powder of adding, improve coffee quality, and after extraction is completed, powder cake can also be conveniently ejected and discharged, improve extraction efficiency.

Description

Technical Field

[0001] This utility model relates to the field of food processing equipment technology, specifically a coffee extraction system. Background Technology

[0002] Coffee extraction is the core step in coffee making, referring to the process of dissolving and extracting soluble substances (flavor compounds, oils, acids, sugars, etc.) from coffee grounds using water. The quality of extraction directly affects the flavor, aroma, and taste of the coffee.

[0003] In the Chinese Patent Document Database, patent application number 202322997805.5 discloses a high-efficiency coffee extraction device. By setting up a pushing mechanism, the top cover can be used to squeeze and filter the mixture in the chamber, thereby improving the extraction effect. However, in actual use, loading and unloading are inconvenient. At the same time, because the coffee powder inside is relatively loose or unevenly distributed, hot water will preferentially flow through the path of least resistance, which may lead to local over-extraction and insufficient extraction in other areas, affecting the coffee quality. Utility Model Content

[0004] The purpose of this invention is to provide a coffee extraction system to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a coffee extraction system, including an extraction tank, a top cover mounted on the top of the extraction tank via a linear drive mechanism, and a partition disposed inside the extraction tank. The partition has several liquid outlet holes. The bottom of the top cover has a liquid distribution chamber adapted to the extraction tank, and the liquid distribution chamber has a steam inlet. The bottom of the liquid distribution chamber has several steam outlets. The extraction tank has a liquid outlet at its lower end. The bottom of the extraction tank is fixed to a base, and the base has a linear drive mechanism inside to push the partition to move up and down inside the extraction tank.

[0006] Furthermore, the linear drive mechanism includes a support rod fixed at the center of the partition, a movable plate fixed at the bottom of the support rod, a threaded rod vertically fixed inside the base, and a first motor that drives the threaded rod to rotate. The support rod passes through the extraction tank and extends into the interior of the base. The movable plate is located inside the base and is threadedly connected to the threaded rod.

[0007] Furthermore, the base has a guide rod vertically arranged inside, parallel to the threaded rod, and the guide rod is slidably connected to the movable plate.

[0008] Furthermore, the support rod is rotatably connected to the partition and the movable plate. The movable plate is provided with a rotary drive mechanism to drive the support rod to rotate. The extraction tank is a cylindrical structure. A rotating sleeve is rotatably installed at the bottom of the inside of the extraction tank. A scraper for cleaning the inner wall of the extraction tank is provided on the outer wall of the rotating sleeve. The rotating sleeve rotates synchronously with the support rod.

[0009] Furthermore, the outer peripheral wall of the support rod is provided with several limiting protrusions along its axial direction, and the inner side wall of the rotating sleeve is provided with several positioning grooves that are adapted to the limiting protrusions, and the limiting protrusions can move up and down inside the positioning grooves.

[0010] Furthermore, the rotary drive mechanism includes a first gear fixed on a support rod, a second gear mounted on a movable plate, and a second motor that drives the second gear to rotate, wherein the first gear and the second gear mesh with each other.

[0011] Furthermore, a limiting ring is provided on the inner wall of the extraction tank to support the partition, so that a cavity for storing coffee liquid is reserved between the partition and the bottom of the extraction tank, and the outlet is located on the outer wall of the cavity.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This coffee extraction system, by setting a linear drive component, can push the top cover and the liquid distribution chamber to move up and down, facilitating the loading and unloading of materials. By setting a linear drive mechanism, the baffle slides up and down inside the extraction tank. The baffle and the liquid distribution chamber cooperate to compress the added coffee powder into a uniformly thick cake. The dense cake allows water to penetrate all areas at the same speed, avoiding extraction of some powder too quickly or too slowly, thus improving coffee quality. At the same time, after extraction is completed, the cake can be easily ejected for discharge, improving extraction efficiency. Attached Figure Description

[0013] Figure 1 This is a cross-sectional view of Embodiment 1 of the present utility model;

[0014] Figure 2 This is a three-dimensional structural diagram of Embodiment 1 of the present utility model;

[0015] Figure 3 This is a three-dimensional structural diagram of the rotary drive mechanism in Embodiment 2 of this utility model;

[0016] Figure 4 This is a partial cross-sectional view of Embodiment 2 of the present invention.

[0017] In the diagram: 1. Extraction tank; 101. Liquid outlet; 102. Limiting ring; 2. Top cover; 3. Linear drive component; 4. Liquid distribution chamber; 401. Steam inlet; 402. Steam outlet; 5. Baffle plate; 501. Liquid outlet hole; 6. Linear drive mechanism; 601. Support rod; 6011. Limiting protrusion; 602. Movable plate; 603. Threaded rod; 604. First motor; 605. Guide rod; 7. Base; 8. Rotating sleeve; 9. Scraper; 10. Rotary drive mechanism; 1001. First gear; 1002. Second gear; 1003. Second motor. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. In the description of the present utility model, it should be noted that the terms "first," "second," etc., are used for descriptive purposes only and do not specifically refer to any order or sequence, nor are they intended to limit the present utility model. They are merely used to distinguish components or operations described with the same technical terms, and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. The term "comprising" and any variations thereof in the specification, claims, and accompanying drawings of the present utility model are intended to cover non-exclusive inclusion.

[0019] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to fixed connections or detachable connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, in the description of this utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0020] Example 1, please refer to Figure 1-2This utility model provides an embodiment of a coffee extraction system, including an extraction tank 1, a top cover 2 that is movably mounted on the top of the extraction tank 1 via a linear drive 3, and a partition 5 disposed inside the extraction tank 1. The extraction tank 1 has a cylindrical structure. The linear drive 3 can be any type of electric push rod, cylinder, etc., vertically arranged on both sides of the extraction tank 1. The output end of the linear drive 3 is fixedly connected to both sides of the top cover 2. By extending and retracting the top cover 2, it can push the top cover 2 up and down, sealing it at the top of the extraction tank 1, or separating it from the extraction tank 1 to add weighed coffee powder and the extracted coffee powder. The partition 5 has several liquid outlet holes 501. The bottom end of the top cover 2 is provided with a connection to the extraction tank 1. The extraction tank 1 has a matching liquid distribution chamber 4, and a steam inlet 401 for introducing high-temperature steam into the chamber. Several steam outlets 402 are provided through the bottom of the liquid distribution chamber 4. An outlet 101 is provided at the bottom of the extraction tank 1. A base 7 is fixed to the bottom of the extraction tank 1, and a linear drive mechanism 6 is provided inside the base 7 to push the baffle 5 to move up and down inside the extraction tank 1. It should be noted that the liquid distribution chamber 4 is a cylindrical structure that is compatible with the extraction tank 1. Its outer peripheral wall is tightly fitted with the inner side wall of the extraction tank 1. It can cooperate with the baffle 5 to compress the coffee powder into a uniform thickness cake. The compact cake allows water to penetrate all areas at the same speed, avoiding extraction of some powder too fast or too slow, and improving the coffee quality.

[0021] In this embodiment, the linear drive mechanism 6 includes a support rod 601 fixed at the center of the partition 5, a movable plate 602 fixed at the bottom of the support rod 601, a threaded rod 603 vertically fixed inside the base 7, and a first motor 604 that drives the threaded rod 603 to rotate. The support rod 601 passes through the extraction tank 1 and extends into the interior of the base 7. The movable plate 602 is located inside the base 7 and is threadedly connected to the threaded rod 603. The first motor 604 is installed inside the base 7 through a mounting plate and is directly connected to the threaded rod 603. The first motor 604 drives the threaded rod 603 to rotate, which in turn drives the movable plate 602 to move up and down along the length of the threaded rod 603. The movable plate 602 then pushes the partition 5 to move up and down inside the extraction tank 1, which can squeeze the coffee powder upwards or push out the coffee cake after extraction. Furthermore, the first motor 604 and the threaded rod 603 can be replaced with a cylinder or the like as needed to push the movable plate 602 to move up and down.

[0022] In this embodiment, a guide rod 605 parallel to the threaded rod 603 is vertically arranged inside the base 7, and the guide rod 605 is slidably connected to the movable plate 602, which can improve the stability of the movable plate 602 moving up and down.

[0023] In this embodiment, a limiting ring 102 for supporting the partition 5 is provided on the inner side wall of the extraction tank 1, so that the partition 5 and the bottom of the extraction tank 1 are reserved to store coffee liquid. The outlet 101 is located on the outer side wall of the cavity, and the limiting ring 102 can mechanically limit the partition 5.

[0024] Working principle: First, the linear drive 3 extends to push the top cover 2 and the liquid distribution chamber 4 upward, adding the weighed coffee powder into the extraction tank 1. Then, the linear drive 3 drives the top cover 2 and the liquid distribution chamber 4 downward, with the bottom of the liquid distribution chamber 4 inserted into the interior of the extraction tank 1. The linear drive mechanism 6 then drives the baffle 5 upward, and the baffle 5 and the liquid distribution chamber 4 cooperate to compress the coffee powder into a uniformly thick cake. High-temperature steam is then introduced into the liquid distribution chamber 4 through the steam inlet 401, and the steam is sprayed out onto the cake through the steam outlet 402, where it comes into contact with the cake for extraction. The extracted coffee liquid flows into the bottom of the extraction tank 1 through the liquid outlet 501 and is finally collected through the liquid outlet 101. The linear drive 3 extends to push the top cover 2 and the liquid distribution chamber 4 upward, and the linear drive mechanism 6 then pushes the baffle 5 upward to push out the extracted cake.

[0025] Example 2, please refer to Figure 3-4 In this embodiment, based on embodiment 1, the support rod 601 is rotatably connected to the partition plate 5 and the movable plate 602. The movable plate 602 is equipped with a rotary drive mechanism 10 to drive the support rod 601 to rotate. A rotating sleeve 8 is rotatably installed at the bottom of the extraction tank 1, and a scraper 9 for cleaning the inner wall of the extraction tank 1 is provided on the outer wall of the rotating sleeve 8. The scraper 9 is specifically an L-shaped structure, including a horizontal plate that fits against the bottom of the extraction tank 1 and a vertical plate that fits against the inner circumferential wall of the extraction tank 1. The top of the vertical plate abuts against the limiting ring 102. The rotating sleeve 8 and the support rod 601 rotate synchronously. After extraction is completed, high-temperature steam or clean water can be continuously introduced into the steam inlet 401 for rinsing. The rotary drive mechanism 10 drives the support rod 601 to rotate, which in turn drives the scraper 9 to rotate at the bottom of the extraction tank 1, scraping the hard-to-clean areas at the bottom of the extraction tank 1, making it more hygienic to use.

[0026] As a further description of this utility model, the support rod 601 is a cylindrical rod-shaped structure. Several limiting protrusions 6011 are provided on the outer peripheral wall of the support rod 601 along its axial direction, and several positioning grooves that are adapted to the limiting protrusions 6011 are provided on the inner side wall of the rotating sleeve 8. The limiting protrusions 6011 can move up and down inside the positioning groove, so that the support rod 601 and the rotating sleeve 8 can move up and down relative to each other, and at the same time, the two can rotate synchronously.

[0027] As a further description of this utility model, the rotary drive mechanism 10 includes a first gear 1001 fixed on the support rod 601, a second gear 1002 mounted on the movable plate 602, and a second motor 1003 that drives the second gear 1002 to rotate. The first gear 1001 and the second gear 1002 mesh with each other. The second motor 1003 is mounted on the bottom end of the movable plate 602, and its output end is fixedly connected to the second gear 1002. By rotating, it drives the second gear 1002 to rotate. The second gear 1002 and the first gear 1001 mesh with each other, thereby driving the first gear 1001 and the support rod 601 to rotate synchronously. The support rod 601 then drives the rotating sleeve 8 and the scraper 9 to rotate. This allows the inside of the extraction tank 1 to be cleaned after extraction is completed, reducing the tedious manual disassembly and cleaning.

[0028] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A coffee extraction system, comprising an extraction tank (1), a top cover (2) mounted vertically on the top of the extraction tank (1) via a linear drive (3), and a partition (5) disposed inside the extraction tank (1), wherein the partition (5) is provided with a plurality of liquid outlet holes (501), characterized in that: The bottom end of the top cover (2) is provided with a liquid distribution chamber (4) adapted to the extraction tank (1), and a steam inlet (401) is provided on the liquid distribution chamber (4). Several steam outlets (402) are provided through the bottom end of the liquid distribution chamber (4). A liquid outlet (101) is provided below the extraction tank (1). A base (7) is fixed at the bottom end of the extraction tank (1), and a linear drive mechanism (6) is provided inside the base (7) to push the partition (5) to move up and down inside the extraction tank (1).

2. The coffee extraction system according to claim 1, characterized in that: The linear drive mechanism (6) includes a support rod (601) fixed at the center of the partition (5), a movable plate (602) fixed at the bottom of the support rod (601), a threaded rod (603) vertically fixed inside the base (7), and a first motor (604) that drives the threaded rod (603) to rotate. The support rod (601) passes through the extraction tank (1) and extends into the interior of the base (7). The movable plate (602) is located inside the base (7) and is threadedly connected to the threaded rod (603).

3. The coffee extraction system according to claim 2, characterized in that: The base (7) has a guide rod (605) that is parallel to the threaded rod (603) and is slidably connected to the movable plate (602) in the upper and lower parts.

4. The coffee extraction system according to claim 2, characterized in that: The support rod (601) is rotatably connected to the partition (5) and the movable plate (602). The movable plate (602) is provided with a rotary drive mechanism (10) for driving the support rod (601) to rotate. The extraction tank (1) is a cylindrical structure. A rotating sleeve (8) is rotatably installed at the bottom of the extraction tank (1). A scraper (9) for cleaning the inner wall of the extraction tank (1) is provided on the outer side wall of the rotating sleeve (8). The rotating sleeve (8) rotates synchronously with the support rod (601).

5. The coffee extraction system according to claim 4, characterized in that: The outer peripheral wall of the support rod (601) is provided with a number of limiting protrusions (6011) along its axial direction, and the inner side wall of the rotating sleeve (8) is provided with a number of positioning grooves that are adapted to the limiting protrusions (6011). The limiting protrusions (6011) can move up and down inside the positioning groove.

6. The coffee extraction system according to claim 4, characterized in that: The rotary drive mechanism (10) includes a first gear (1001) fixed on a support rod (601), a second gear (1002) mounted on a movable plate (602), and a second motor (1003) that drives the second gear (1002) to rotate. The first gear (1001) and the second gear (1002) mesh with each other.

7. The coffee extraction system according to claim 1, characterized in that: The inner wall of the extraction tank (1) is provided with a limiting ring (102) for supporting the partition (5), so that the partition (5) and the bottom of the extraction tank (1) are reserved to store coffee liquid. The outlet (101) is located on the outer wall of the cavity.

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