Water inlet structure of lower hammer head of brewing device

Abstract

The utility model relates to the technical field of brewing beverage dispensers, in particular to a water inlet structure of a lower hammer head of a brewing device, which solves the problems of inconvenience in product installation, easiness in damage and high cost caused by the existing water inlet structure of the brewing device, and is provided with the lower hammer head and a hot water pipe, the structure that the water inlet channel is communicated with the hot water pipe is that the lower section of the water inlet channel on the lower hammer head is provided with an internal thread and a quick insertion pipe joint comprising an upper joint and a lower joint, the upper joint is provided with an external thread connecting part, and the lower joint is provided with an external thread connecting part. The upper connector is screwed on the lower hammer head to enable an inner cavity of the quick-inserting pipe connector to be communicated with the water inlet channel, the hot water pipe is sleeved on the lower connector and inserted on the upper connector along with the lower connector, and particularly, in order to facilitate processing and improve the strength of internal threads, the internal threads of the water inlet channel are internal threads which are embedded into a nut and are integrated with the lower hammer head in an injection molding mode.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of brewing beverage machine, especially a brewing device lower hammer head water inlet structure. BACKGROUND

[0002] Taking a coffee brewing device as an example, the parts of the brewing device include an upper hammer head, a brewing cylinder and a lower hammer head, etc., hot water enters the brewing cylinder from the lower hammer head in one direction, and at the same time when the upper hammer head and the lower hammer head are close to each other, the brewed beverage is squeezed to flow out from the upper hammer head.

[0003] In terms of the water inlet structure of the lower hammer head, an existing structure is shown in a piston structure of a coffee machine brewing unit disclosed in Chinese Patent Publication No. CN212368800U, and the water inlet structure is shown in the accompanying drawings. Figure 1 As shown in the accompanying drawings, the upper end of the hot water pipe is wrapped by a copper sleeve with a protruding ring, a sealing ring is sleeved on the copper sleeve, the lower hammer head is provided with a counterbore, the large hole of the counterbore is at the lower part and the small hole is at the upper part, the copper sleeve with the hot water pipe is inserted into the small hole from the large hole, the sealing ring is placed on the step of the counterbore, and the fixation of the copper sleeve is realized by a pressing block, which is fixed in the inner cavity of the lower hammer head by a self-tapping screw. The disadvantages of this structure are as follows: 1. high cost: the pressing block needs to be separately molded; 2. troublesome installation: due to the influence of the hot water pipe, it is difficult to align the counterbore of the lower hammer head when the pressing block presses the copper sleeve, and the installation process is time-consuming; 3. easy to damage: the pressing block is fixed by a self-tapping screw, and since the extraction pressure can cause the residue to block the water inlet, the hot water pipe needs to be cleaned or replaced, so after being disassembled for many times, the self-tapping screw hole is prone to slipping. CONTENT OF THE UTILITY MODEL

[0004] The technical problem to be solved by the utility model is to provide a brewing device lower hammer head water inlet structure to overcome the problems of inconvenient product installation, easy damage and high cost caused by the existing brewing device water inlet structure.

[0005] The technical solution adopted by the utility model to solve the technical problem is: a brewing device lower hammer head water inlet structure, which has a lower hammer head and a hot water pipe, a vertical water inlet channel is provided on the lower hammer head, the upper opening of the water inlet channel is connected to a brewing cavity, and the lower opening is connected to the hot water pipe, the lower hammer head is an injection molding part, and the structure in which the water inlet channel is connected to the hot water pipe is that the lower segment of the water inlet channel on the lower hammer head has internal threads, a quick plug pipe joint including an upper joint and a lower joint is provided, the upper joint has an external thread connection part, the upper joint is screwed onto the lower hammer head to make the internal cavity of the quick plug pipe joint communicate with the water inlet channel, and the hot water pipe is sleeved on the lower joint and inserted into the upper joint with the lower joint.

[0006] Specifically, since the internal threads of the water inlet channel of the lower hammer head are located on the cavity end wall of the lower hammer head, in order to facilitate processing and improve the strength of the internal threads, the internal threads of the water inlet channel are embedded nut internal threads integrated with the lower hammer head.

[0007] Specifically, in order to improve the sealing between the quick plug joint and the water inlet channel, the lower joint is provided with a sealing gasket on the end face close to the embedded nut.

[0008] Specifically, the metal embedded nut is used to make the internal thread have higher strength.

[0009] Specifically, in order to facilitate installation using the sleeve, the screw-in part of the upper joint is hexagonal.

[0010] The beneficial effects of the utility model are:

[0011] 1. Reduce the cost: the required processing parts are reduced, and the quick plug joint can be purchased externally.

[0012] 2. Simple installation: only the sleeve is needed to screw the threaded upper joint on the lower hammer head water inlet channel, and the lower joint is inserted.

[0013] 3. Higher strength: the threaded plastic embedded nut is used instead of self-tapping screw, and the disassembly of the threaded straight-through quick plug joint will not damage the lower hammer head. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, obviously, the drawings in the following description are only some embodiments described in the application, and for those skilled in the art, other drawings can be obtained without creative labor.

[0015] Figure 1 It is a perspective view of the brewing device;

[0016] Figure 2 It is a sectional view showing the water inlet structure of the lower hammer head.

[0017] In the figure: 1, powder falling hopper, 2, lower hammer head, 3, brewing cylinder, 4, hot water pipe, 5, water inlet channel, 6, upper joint, 7, lower joint, 8, embedded nut, 9, sealing gasket. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model more clear, the following will combine the drawings in the embodiments of the utility model to clearly and completely describe the technical scheme in the embodiments of the utility model, obviously, the described embodiments are part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the utility model.

[0019] ATTACHMENTFigure 1 is the perspective view of the brewing device, the upper hammer head fixed between the two side plates is blocked by the powder falling hopper 1, the lower hammer head 2 is located in the brewing cylinder 3, the brewing cylinder 3 moves up and down, the lower hammer head 2 has a process of keeping still when the brewing cylinder 3 moves up and down, and also has a process of moving up and down with the brewing cylinder 3, the accompanying Figure 2 is the water inlet structure of the lower hammer head of the brewing device, which has the lower hammer head 2 and the hot water pipe 4, the lower hammer head 2 is provided with a vertical water inlet channel 5, the upper opening of the water inlet channel 5 is connected with the brewing cavity, and the lower opening is connected with the hot water pipe 5, the lower hammer head 2 is an injection molding part, the structure that the water inlet channel 5 is connected with the hot water pipe 4 is that the lower section of the water inlet channel 5 on the lower hammer head 2 is provided with an internal thread, the internal thread is an internal thread of an embedded nut 8 which is integrated with the lower hammer head 2, the quick plug pipe joint has an upper connector 6 and a lower connector 7, the upper connector 6 has an external thread connection part, the upper connector 6 is screwed on the lower hammer head 2 to make the inner cavity of the quick plug pipe joint communicated with the water inlet channel 5, and the hot water pipe 5 is sleeved on the lower connector 7 and is inserted on the upper connector 6 with the lower connector 7.

[0020] The end face close to the embedded nut 8 of the lower connector 7 is provided with a sealing gasket 9, the embedded nut 8 is a metal nut, which can be a copper nut or a stainless steel nut, and the screwed part of the upper connector 6 is hexagonal.

[0021] The insertion structure of the upper connector 6 and the lower connector 7 of the quick plug pipe joint is prior art.

[0022] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any skilled person in the technical field according to the technical scheme and the application concept of the present application can make equivalent replacement or change within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A water inlet structure of a lower hammer head of a brewing device, comprising a lower hammer head and a hot water pipe, a vertical water inlet channel is arranged on the lower hammer head, an upper opening of the water inlet channel is communicated with a brewing cavity, and a lower opening of the water inlet channel is communicated with the hot water pipe, the lower hammer head is an injection molding part, and characterized in that: The structure that the water inlet channel communicates with the hot water pipe is that the lower section of the water inlet channel on the lower hammer head has internal threads, a quick plug pipe joint having an upper joint and a lower joint, the upper joint having an external threaded connection portion, the upper joint being screwed on the lower hammer head to make the internal cavity of the quick plug pipe joint communicate with the water inlet channel, and the hot water pipe being sleeved on the lower joint and being inserted on the upper joint with the lower joint.

2. The water inlet structure of the lower hammer head of the brewing device according to claim 1, characterized in that: The internal threads of the water inlet channel are internal threads of an embedded nut which are integrally formed with the lower hammer head.

3. The water inlet structure of the lower hammer head of the brewing device according to claim 2, characterized in that: A sealing gasket is arranged on the end face of the lower joint which is close to the embedded nut.

4. The water inlet structure of the lower hammer head of the brewing device according to claim 2, characterized in that: The embedded nut is a metal nut.

5. The water inlet structure of the lower hammer head of the brewing device according to claim 1, characterized in that: The screwed-in portion of the upper joint is hexagonal.

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