Coffee pressurizing valve and moka pot

Abstract

The present disclosure provides a coffee pressurizing valve and a moka pot; the coffee pressurizing valve has a liquid passing channel formed in a pressurizing valve assembly; a pressurizing plug nozzle is installed on the pressurizing valve assembly and is arranged at the entrance of the liquid passing channel; a guide structure and a sealing matching structure are formed on the inner surface of the liquid passing channel, and the sealing matching structure is coaxially arranged with the guide structure; a counterweight sealing plug is movably arranged in the liquid passing channel and is adapted to the guide structure to make the moving direction of the counterweight sealing plug consistent with the extension direction of the guide structure; a liquid seepage gap is formed between the outer surface of the counterweight sealing plug and the inner surface of the liquid passing channel, the liquid seepage gap is communicated with the outlet of the liquid passing channel, the counterweight sealing plug can stably descend along the extension direction of the guide structure under the action of gravity, or the counterweight sealing plug can stably ascend along the extension direction of the guide structure under the action of the coffee liquid pressure, and the counterweight sealing plug is less likely to be deformed and skewed by the impact of the coffee liquid.

Description

Technical Field

[0001] This disclosure relates to the technical field of coffee making equipment, and in particular to a coffee pressure valve and a moka pot. Background Technology

[0002] The Moka pot, as a core tool for efficiently extracting espresso in the home, is rapidly penetrating the home market thanks to its simple operation and consistent brewing quality. (Please refer to...) Figure 1 To increase the extraction pressure of coffee grounds in a Moka pot, most manufacturers use a pressure-boosting valve, such as the one disclosed in Chinese patent application document 2024218273854, which uses a conical spring 10 to hold the elastic stopper 20 in place. However, due to the structural limitations of the conical spring 10, the force exerted by the conical spring 10 on the elastic stopper 20 is limited, resulting in a poor effect on increasing the extraction pressure of the coffee grounds. Furthermore, when the coffee liquid, pressurized by the elastic stopper 20, is ejected, the conical spring 10 is easily deformed and tilted within the valve body of the pressure-boosting valve due to the impact of the coffee liquid. This requires manual adjustment, making it inconvenient to use. Utility Model Content

[0003] The purpose of this disclosure is to overcome the shortcomings of the prior art and provide a coffee pressure valve and moka pot that have a stable pressure method and are easy to use.

[0004] The purpose of this disclosure is achieved through the following technical solution:

[0005] A coffee booster valve, comprising:

[0006] A pressure boosting valve assembly, wherein a liquid passage is formed within the pressure boosting valve assembly;

[0007] A pressure-pressurizing nozzle is installed on the pressure-boosting valve assembly and plugs the inlet of the liquid passage; the inner channel of the pressure-pressurizing nozzle is used to pressurize and introduce coffee liquid into the liquid passage.

[0008] The coffee booster valve also includes a counterweight pressure plug, a guide structure, and a sealing fit structure;

[0009] Both the guiding structure and the sealing and fitting structure are formed on the inner surface of the liquid passage, and the sealing and fitting structure is coaxially arranged with the guiding structure; the counterweight pressure plug is movably disposed in the liquid passage and is adapted to the guiding structure by raising and lowering, so that the movement direction of the counterweight pressure plug is consistent with the extension direction of the guiding structure; a seepage gap is formed between the outer surface of the counterweight pressure plug and the inner surface of the liquid passage, and the seepage gap is connected to the outlet of the liquid passage;

[0010] The counterweight plugging component is also used to abut or disengage from the sealing structure to seal and block or open the seepage gap and the inner channel of the pressurized plug.

[0011] In some embodiments, a portion of the guide structure engages with a portion of the counterweight pressure block in a raised and recessed manner.

[0012] In some embodiments, the counterweight blocking member has an adaptation recess; the protrusion of the guide structure extends into the adaptation recess and is coaxially and vertically arranged with the counterweight blocking member.

[0013] In some embodiments, the guide structure extends in a columnar shape, and the diameter of the guide structure is smaller than the inner diameter of the adapting notch; or,

[0014] The inner peripheral wall of the adapting notch slides against the outer peripheral wall of the guide structure.

[0015] In some embodiments, the guide structure has a guide recess; a portion of the counterweight pressure block is located within the guide recess and is raised and lowered along the axial direction of the counterweight pressure block; the axial direction of the counterweight pressure block is the same as the extension direction of the guide recess.

[0016] In some embodiments, a movable gap is formed between the outer peripheral wall of the counterweight plug and the inner peripheral wall of the guide recess; or,

[0017] The inner peripheral wall of the guide recess slides against the outer peripheral wall of the counterweight plug.

[0018] In some embodiments, the coffee booster valve further includes an elastic reset member; the counterweight pressure plug is connected to the inner wall of the liquid passage through the elastic reset member, so that another part of the outer surface of the counterweight pressure plug is elastically reset to the sealing and mating structure.

[0019] In some embodiments, the booster valve assembly includes a threaded valve core and a valve cap, with the fluid passage formed between the valve core and the valve cap; the seepage gap is formed between the outer peripheral wall of the counterweight pressure plug and the inner peripheral wall of the valve core, and the bottom edge of the counterweight pressure plug abuts against an annular step protruding from the inner periphery of the valve core; the counterweight pressure plug is connected to the valve cap through the elastic reset member, so that the bottom edge of the counterweight pressure plug is elastically abutted against the edge of the annular step.

[0020] In some embodiments, the extension direction of the resilient reset member is the same as the extension direction of the guide structure.

[0021] A moka pot includes a pot body and a coffee pressure valve according to any of the above embodiments; the pot body is provided with a coffee guide column, which is connected to the coffee powder container of the pot body; the pressure valve assembly is installed on the coffee guide column, and the liquid passage is connected to the interior of the coffee guide column through the inner channel of the pressure nozzle.

[0022] Compared with the prior art, this disclosure has at least the following advantages:

[0023] The aforementioned coffee booster valve, due to the coaxial arrangement of the sealing and guiding structure formed on the inner surface of the liquid passage, and the adjustable height of the counterweight pressure plug and the guiding structure, allows the counterweight pressure plug to descend along the extension direction of the guiding structure under gravity. This allows the outer surface of the counterweight pressure plug to abut against the sealing and guiding structure, sealing the gap between the liquid and the pressurizing nozzle. The counterweight pressure plug then pressurizes and traps the coffee liquid between itself and the pressurizing nozzle. Subsequently, as the pressure of the coffee liquid increases beyond the weight of the counterweight pressure plug, it rises along the extension direction of the guiding structure under the pressure of the coffee liquid, separating from the sealing and guiding structure. Thus, the counterweight pressure plug maintains stable vertical movement under the influence of gravity and the guiding structure, is less prone to deformation or tilting due to the impact of the coffee liquid, and is therefore easier to use. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of this disclosure, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this disclosure and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 A partial cross-sectional view of a pressure boosting valve in the prior art;

[0026] Figure 2 This is a cross-sectional view of a moka pot according to an embodiment of the present disclosure;

[0027] Figure 3 for Figure 2 The enlarged view shown at point A in the middle;

[0028] Figure 4 This is a partial cross-sectional view of a moka pot according to another embodiment of this disclosure;

[0029] Figure 5 for Figure 1 An exploded view of the coffee pressurization valve in the moka pot.

[0030] Figure label:

[0031] 10. Conical spring; 20. Elastic stopper;

[0032] 100. Coffee pressure valve; 200. Kettle body; 210. Coffee guide column; 220. Coffee powder carrier;

[0033] 110. Pressure booster valve assembly; 1110. Valve core; 1120. Valve cap; 101. Liquid passage; 102. Leakage gap;

[0034] 120. Pressure plug; 1201. Inner channel;

[0035] 130. Counterweight pressure plug; 1301. Fitting notch;

[0036] 140. Guide structure; 1401. Guide notch;

[0037] 150. Sealing and fitting structure;

[0038] 160. Elastic reset component. Detailed Implementation

[0039] To facilitate understanding of this disclosure, a more complete description will be given below with reference to the accompanying drawings, which illustrate preferred embodiments of the present disclosure. However, this disclosure can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure.

[0040] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this disclosure. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0042] To better understand the technical solutions and beneficial effects of this disclosure, the following detailed description is provided in conjunction with specific embodiments:

[0043] Please see Figure 2 and Figure 3One embodiment of a coffee booster valve 100 includes a booster valve assembly 110, a pressurizing nozzle 120, a counterweight pressure plug 130, a guide structure 140, and a sealing and fitting structure 150. A liquid passage 101 is formed within the booster valve assembly 110. The pressurizing nozzle 120 is mounted on the booster valve assembly 110 and plugs the inlet of the liquid passage 101. The inner channel 1201 of the pressurizing nozzle 120 is used to pressurize and guide coffee liquid into the liquid passage 101. Both the guide structure 140 and the sealing and fitting structure 150 are formed on the inner surface of the liquid passage 101, and the sealing and fitting structure 150 and the guide structure 140 are connected. The counterweight pressure plug 130 is coaxially arranged with the structure 140; the counterweight pressure plug 130 is movably arranged in the liquid passage 101 and is adapted to the guide structure 140 by lifting and lowering, so that the direction of movement of the counterweight pressure plug 130 is consistent with the extension direction of the guide structure 140; a seepage gap 102 is formed between the outer surface of the counterweight pressure plug 130 and the inner surface of the liquid passage 101, and the seepage gap 102 is connected to the outlet of the liquid passage 101; the counterweight pressure plug 130 is also used to abut or disengage with the sealing and fitting structure 150 to seal and block or conduct the seepage gap 102 and the inner channel 1201 of the pressure plug 120.

[0044] It is understood that, since the sealing and fitting structure 150 formed on the inner surface of the liquid passage 101 is coaxially arranged with the guide structure 140, and the counterweight pressure plug 130 is adapted to the guide structure 140 for vertical movement, the counterweight pressure plug 130 can descend along the extension direction of the guide structure 140 under the action of gravity. This allows the outer surface of the counterweight pressure plug 130 to abut against the sealing and fitting structure 150, thereby sealing and blocking the liquid leakage gap 102 and the pressure stopper 120. The coffee liquid is then trapped between the counterweight pressure plug 130 and the pressure stopper 120 by the pressure applied by the counterweight pressure plug 130. Subsequently, as the pressure of the coffee liquid increases to exceed the weight of the counterweight pressure plug 130, the counterweight pressure plug 130 can continue to rise along the extension direction of the guide structure 140 under the action of the coffee liquid pressure, separating from the sealing and fitting structure 150. In this way, the counterweight pressure plug 130 can maintain a stable lifting and lowering motion under the action of gravity and the guide structure 140, and is less likely to be deformed or tilted by the impact of coffee liquid, thus making it easier to use.

[0045] In this embodiment, the counterweight plugging component 130 is located above the sealing and mating structure 150. The counterweight plugging component 130 is a counterweight metal block, such as food-grade stainless steel. The weight of the counterweight plugging component 130 is 1.5g, and those skilled in the art can make other choices regarding the specific weight of the counterweight plugging component 130.

[0046] Please see Figure 3 and Figure 4In some embodiments, a portion of the guide structure 140 and a portion of the counterweight pressure block 130 engage in a concave-convex lifting fit. It is understood that by engaging the concave-convex lifting fit between the portion of the guide structure 140 and the portion of the counterweight pressure block 130, interference is formed between them through the concave-convex fit. This allows the counterweight pressure block 130 to move smoothly along the guide structure 140 under the interference effect, further reducing the likelihood of the counterweight pressure block 130 tilting due to the impact of coffee liquid. In other embodiments, the counterweight pressure block 130 is slidably disposed on the guide structure 140. The specific details are not limited here, and those skilled in the art can make other selections as needed.

[0047] The guide structure 140 and the counterweight pressure plug 130 have a concave-convex lifting mechanism, which includes at least the following implementation methods:

[0048] Please see Figure 3 In one embodiment, a matching recess 1301 is formed on the counterweight blocking member 130; the protruding portion of the guide structure 140 extends into the matching recess 1301 and is coaxially and vertically arranged with the counterweight blocking member 130. It can be understood that, since the protruding portion of the guide structure 140 extends into the matching recess 1301 and is coaxially and vertically arranged with the counterweight blocking member 130, at least when the counterweight blocking member 130 moves relative to the guide structure 140 and its axis is misaligned, the protruding portion of the guide structure 140 can interfere with the inner wall of the matching recess 1301, thereby allowing the counterweight blocking member 130 to remain in a straight position during movement. In this embodiment, the protruding portion of the guide structure 140 passes through the matching recess 1301 through the counterweight blocking member 130, allowing the counterweight blocking member 130 to move a greater extent within the guide structure 140.

[0049] Specifically, the coaxial lifting arrangement of the protruding part of the guide structure 140 and the counterweight pressure plug 130 includes at least the following implementation methods:

[0050] For example, the guide structure 140 extends in a columnar shape, and its diameter is smaller than the inner diameter of the fitting recess 1301. It can be understood that after the protruding portion of the guide structure 140 extends into the fitting recess 1301, because the diameter of the guide structure 140 is smaller than the inner diameter of the fitting recess 1301, a movable micro-space can still be maintained between the inner wall of the fitting recess 1301 and the guide structure 140. In other words, the counterweight pressure plug 130 is movably fitted onto the guide structure 140, allowing the counterweight pressure plug 130 to move up and down relative to the guide structure 140. It should be noted that the width of the micro-space is 1% of the diameter of the counterweight pressure plug 130. At this width, the amount of coffee liquid entering the micro-space is relatively small, yet the pressurizing effect of the counterweight pressure plug 130 on the coffee liquid can still be maintained.

[0051] Alternatively, the inner peripheral wall of the adapting notch 1301 can slide against the outer peripheral wall of the guide structure 140. It can be understood that by making the inner peripheral wall of the adapting notch 1301 slide against the outer peripheral wall of the guide structure 140, the inner peripheral wall of the adapting notch 1301 can interfere with the outer peripheral wall of the guide structure 140. This allows the guide structure 140 to constrain the placement of the counterweight pressure plug 130, enabling the counterweight pressure plug 130 to slide and rise stably relative to the guide structure 140 under the impact of the coffee liquid. The mutual contact between the inner peripheral wall of the adapting notch 1301 and the outer peripheral wall of the guide structure 140 reduces the amount of coffee liquid entering the gap between the adapting notch 1301 and the guide structure 140, thereby increasing the pressurizing effect of the counterweight pressure plug 130 on the coffee liquid.

[0052] In another embodiment, a guide recess 1401 is formed on the guide structure 140; a portion of the counterweight pressure block 130 is located within the guide recess 1401 and is vertically mounted along the axial direction of the counterweight pressure block 130; the axial direction of the counterweight pressure block 130 is the same as the extending direction of the guide recess 1401. It can be understood that because the axial direction of the counterweight pressure block 130 is the same as the extending direction of the guide recess 1401, the counterweight pressure block 130 can rise smoothly along the extending direction of the guide recess 1401 under the impact of the coffee liquid, thereby allowing the counterweight pressure block 130 to remain in a straight position during movement.

[0053] Specifically, the lifting and lowering arrangement of a portion of the counterweight pressure plug 130 along the axial direction of the counterweight pressure plug 130 includes at least the following implementation methods:

[0054] For example, a movable gap is formed between the outer peripheral wall of the counterweight pressure plug 130 and the inner peripheral wall of the guide recess 1401. It can be understood that because of this movable gap, a portion of the counterweight pressure plug 130 remains movable even after being positioned within the guide recess 1401, allowing it to rise along the extension direction of the guide recess 1401 under the impact of the coffee liquid. It should be specifically noted that the width of the movable gap is 1% of the diameter of the counterweight pressure plug 130, ensuring that slight swaying of the counterweight pressure plug 130 is interfered with by the guide recess 1401, thus allowing the counterweight pressure plug 130 to remain aligned during movement.

[0055] Alternatively, the inner peripheral wall of the guide recess 1401 can slide against the outer peripheral wall of the counterweight pressure block 130. It can be understood that by creating a movable gap between the outer peripheral wall of the counterweight pressure block 130 and the inner peripheral wall of the guide recess 1401, interference is formed between them. This allows the guide structure 140 to constrain the placement of the counterweight pressure block 130, enabling it to slide stably relative to the guide structure 140 under the impact of the coffee liquid.

[0056] In some embodiments, the coffee pressurization valve 100 further includes an elastic reset member 160; the counterweight pressure plug 130 is connected to the inner wall of the liquid passage 101 via the elastic reset member 160, so that another part of the outer surface of the counterweight pressure plug 130 is elastically reset towards the sealing and mating structure 150. It can be understood that since the counterweight pressure plug 130 is connected to the inner wall of the liquid passage 101 via the elastic reset member 160, the counterweight pressure plug 130 can be quickly reset along the extension direction of the guide structure 140 under the elastic force of the elastic reset member 160 after the coffee liquid is pressurized, so that the counterweight pressure plug 130 and the sealing and mating structure 150 can be re-engaged. The elastic reset member 160 is installed above the counterweight pressure block member 130. When the counterweight pressure block member 130 is separated from the sealing mating structure 150, the elastic reset member 160 is compressed and deformed. When the counterweight pressure block member 130 is installed above the counterweight pressure block member 130, the elastic reset member 160 is stretched and deformed. In both cases, the counterweight pressure block member 130 can be reset to the sealing mating structure 150 by the deformation force of the elastic reset member 160.

[0057] Please see Figure 3 and Figure 4 In this embodiment, the booster valve assembly 110 includes a threaded valve core 1110 and a valve cap 1120, with a liquid passage 101 formed between the valve core 1110 and the valve cap 1120; a seepage gap 102 is formed between the outer peripheral wall of the counterweight pressure plug 130 and the inner peripheral wall of the valve core 1110, and the bottom edge of the counterweight pressure plug 130 abuts against the annular step protruding along the inner periphery of the valve core 1110; the counterweight pressure plug 130 is connected to the valve cap 1120 through an elastic reset member 160, so that the bottom edge of the counterweight pressure plug 130 is subjected to elastic force and seals against the edge of the annular step. It is understandable that, since the valve core 1110 and the valve cap 1120 are threaded together, the heavy-pressure plug abutting against the annular step is connected to the valve cap 1120 through the elastic reset member 160. This allows the compression of the elastic reset member 160 to be adjusted by turning the valve cap 1120, thereby changing the deformation force of the elastic reset member 160. This, in turn, adjusts the sealing degree between the bottom edge of the counterweight plug 130 and the edge of the annular step, ultimately achieving the adjustment of the pressurization effect on the coffee liquid. The sealing and fitting structure 150 is an annular step.

[0058] Please see Figure 3 and Figure 4 In some embodiments, the extending direction of the elastic reset member 160 is the same as the extending direction of the guide structure 140. It can be understood that because the extending direction of the elastic reset member 160 is the same as the extending direction of the guide structure 140, the direction of the elastic force applied by the elastic reset member 160 can be consistent with the extending direction of the guide structure 140, thereby allowing the counterweight pressure plug 130 to reset more quickly under the elastic force of the elastic reset member 160. Specifically, the elastic reset member 160 can be a coil spring, a spring sheet, etc., which are only examples here, and those skilled in the art can make other choices as needed. In this embodiment, the elastic reset member 160 is a coil spring, and the central axis of the coil spring coincides with the central axis of the guide structure 140.

[0059] Please see Figure 2 and Figure 3 This disclosure also provides a moka pot, including a pot body 200 and a coffee pressure valve 100 of any of the above embodiments; a coffee guide column 210 is provided inside the pot body 200, and the coffee guide column 210 is connected to the coffee powder container 220 of the pot body 200; a pressure valve assembly 110 is installed on the coffee guide column 210, and a liquid passage 101 is connected to the interior of the coffee guide column 210 through the inner passage 1201 of the pressure stopper 120. It is understood that by applying the coffee pressure valve 100 disclosed herein to a moka pot, since the coffee guide column 210 is connected to the coffee powder container 220 of the pot body 200, and the interior of the coffee guide column 210 is connected to the liquid passage 101 through the inner channel 1201 of the pressure stopper 120, the coffee liquid obtained by the coffee powder extracted by the coffee powder container 220 passes through the coffee guide column 210 and the inner channel 1201 of the pressure stopper 120 and enters the liquid passage 101 for secondary pressure, thereby greatly improving the taste of the coffee liquid.

[0060] Compared with the prior art, this disclosure has at least the following advantages:

[0061] The aforementioned coffee pressurizing valve 100, due to the coaxial arrangement of the sealing and fitting structure 150 formed on the inner surface of the liquid passage 101 and the guide structure 140, and the adjustable height of the counterweight pressure plug 130 and the guide structure 140, allows the counterweight pressure plug 130 to descend along the extension direction of the guide structure 140 under the action of gravity. This allows the outer surface of the counterweight pressure plug 130 to abut against the sealing and fitting structure 150, thereby sealing and blocking the liquid leakage gap 102 and the pressurizing nozzle 120. The coffee liquid is then pressurized and trapped between the counterweight pressure plug 130 and the pressurizing nozzle 120. Subsequently, as the pressure of the coffee liquid increases to exceed the weight of the counterweight pressure plug 130, the counterweight pressure plug 130 can continue to rise along the extension direction of the guide structure 140 under the action of the coffee liquid pressure, separating from the sealing and fitting structure 150. In this way, the counterweight pressure plug 130 can maintain a stable lifting and lowering motion under the action of gravity and the guide structure 140, and is less likely to be deformed or tilted by the impact of coffee liquid, thus making it easier to use.

[0062] The embodiments described above are merely illustrative of several implementations of this disclosure, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this disclosure, and these all fall within the protection scope of this disclosure. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A coffee pressurizing valve, comprising: A pressure boosting valve assembly, wherein a liquid passage is formed within the pressure boosting valve assembly; A pressure-pressurizing nozzle is installed on the pressure-boosting valve assembly and plugs the inlet of the liquid passage; the inner channel of the pressure-pressurizing nozzle is used to pressurize and introduce coffee liquid into the liquid passage. The coffee booster valve is characterized in that it further includes a counterweight pressure plug, a guide structure, and a sealing and fitting structure; Both the guiding structure and the sealing and fitting structure are formed on the inner surface of the liquid passage, and the sealing and fitting structure is coaxially arranged with the guiding structure; the counterweight pressure plug is movably disposed in the liquid passage and is adapted to the guiding structure by raising and lowering, so that the movement direction of the counterweight pressure plug is consistent with the extension direction of the guiding structure; a seepage gap is formed between the outer surface of the counterweight pressure plug and the inner surface of the liquid passage, and the seepage gap is connected to the outlet of the liquid passage; The counterweight plugging component is also used to abut or disengage from the sealing structure to seal and block or open the seepage gap and the inner channel of the pressurized plug.

2. The coffee booster valve according to claim 1, characterized in that, Part of the guide structure engages with part of the counterweight pressure plug in a raised and lowering manner.

3. The coffee booster valve according to claim 2, characterized in that, The counterweight pressure plug has a matching recess; the protruding part of the guide structure extends into the matching recess and is coaxially and vertically arranged with the counterweight pressure plug.

4. The coffee booster valve according to claim 3, characterized in that, The guide structure extends in a columnar shape, and the diameter of the guide structure is smaller than the inner diameter of the adapting notch; or, The inner peripheral wall of the adapting notch slides against the outer peripheral wall of the guide structure.

5. The coffee booster valve according to claim 2, characterized in that, The guide structure has a guide notch; part of the counterweight pressure plug is located in the guide notch and is raised and lowered along the axial direction of the counterweight pressure plug; the axial direction of the counterweight pressure plug is the same as the extension direction of the guide notch.

6. The coffee booster valve according to claim 5, characterized in that, A movable gap is formed between the outer peripheral wall of the counterweight plug and the inner peripheral wall of the guide recess; or, The inner peripheral wall of the guide recess slides against the outer peripheral wall of the counterweight plug.

7. The coffee booster valve according to claim 1, characterized in that, The coffee booster valve also includes an elastic reset component; the counterweight pressure plug is connected to the inner wall of the liquid passage through the elastic reset component, so that the other part of the outer surface of the counterweight pressure plug is reset to the sealing and mating structure by elastic force.

8. The coffee booster valve according to claim 7, characterized in that, The booster valve assembly includes a threaded valve core and a valve cap, with the liquid passage formed between the valve core and the valve cap; the seepage gap is formed between the outer peripheral wall of the counterweight pressure plug and the inner peripheral wall of the valve core, and the bottom edge of the counterweight pressure plug abuts against the annular step protruding from the inner periphery of the valve core; the counterweight pressure plug is connected to the valve cap through the elastic reset member, so that the bottom edge of the counterweight pressure plug is subjected to elastic force and seals against the edge of the annular step.

9. The coffee booster valve according to claim 8, characterized in that, The extension direction of the elastic reset member is the same as the extension direction of the guide structure.

10. A moka pot, characterized in that, The device includes a pot body and a coffee pressure valve according to any one of claims 1 to 9; the pot body is provided with a coffee guide column, which is connected to the coffee powder container of the pot body; the pressure valve assembly is installed on the coffee guide column, and the liquid passage is connected to the interior of the coffee guide column through the inner channel of the pressure nozzle.

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