Liquid outlet buffer assembly, liquid outlet device and beverage machine

Abstract

The utility model discloses a liquid outlet buffer component, liquid outlet device and beverage machine relates to catering equipment technical field, including elastic pipeline and limit suite, the first end of elastic pipeline is communicated with pumping pipe, and the second end is communicated with the product pipeline, the inner diameter of elastic pipeline is less than the inner diameter of pumping pipe to play the throttling effect, and the limit suite is equipped with the limit suite. Meanwhile, the elastic pipeline is made of an elastic material, so that the elastic pipeline can perform certain deformation buffer offset on the pulse of the liquid, the limiting suite is provided with a limiting channel, the elastic pipeline is arranged in the limiting channel, and a preset distance is formed between the outer wall of the elastic pipeline and the limiting channel; the elastic pipeline is used for accommodating deformation of the elastic pipeline and limiting the limit degree of the deformation, so that the elastic pipeline is prevented from being burst. When liquid enters the elastic pipeline from the pumping pipe, the throttling effect is generated at the elastic pipeline under the influence of the change of the inner diameter of the pipeline, the pulse of the liquid can be neutralized through the deformation of the elastic pipeline, and the smooth flowing of the liquid in the product outlet pipeline is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of catering equipment, and more specifically to a liquid outlet buffer component, a liquid outlet device and a beverage machine. Background Art

[0002] With the rapid development of the beverage market, people's demand for beverage machines is growing. This equipment is mainly used to quickly and efficiently dispense various liquid beverages including tea, juice, milk, syrup and coffee. With the continuous increase in the variety of liquid beverages, the beverage industry has begun to widely introduce ready-made beverage dispensing machines.

[0003] In the ready-made beverage dispensing machine, all liquid beverages share a dispensing base through the action of their respective pumps, so that the liquid beverages flow into the finished cup or shaker. Among them, the pump is the power element of the liquid beverage delivery system. Compared with other types of pumps, peristaltic pumps are widely promoted and used because of their advantages such as no pollution, high repeatability, low shear force, good sealing, simple maintenance, and bidirectional equal flow delivery capacity.

[0004] The working principle of the peristaltic pump is to use the pillow-shaped hose between two rollers, and to pump the fluid by alternately squeezing and releasing the elastic conveying hose when the rollers rotate. As the rollers roll, the elasticity of the hose will cause it to continuously restore its original shape, forming a negative pressure at the pump inlet, causing the liquid to flow and fill the hose, achieving the purpose of transmission.

[0005] However, the liquid output by the peristaltic pump is pulsed, which seriously affects the accuracy of the product and also causes the problem of liquid splashing at the outlet. At present, the industry mainly optimizes the pulse problem by adjusting the pump speed and the number of rollers through software. However, when the high-viscosity liquid is output at a low speed, its output accuracy is still difficult to guarantee.

[0006] Therefore, how to reduce the impact of the pulse output of the peristaltic pump on the liquid output has become a technical problem that needs to be solved urgently by those skilled in the art. Utility Model Content

[0007] In view of this, an object of the present invention is to provide a liquid outlet buffer assembly to reduce the influence of the pulse output of the peristaltic pump on the liquid output.

[0008] Another object of the present utility model is to provide a liquid discharge device including the above-mentioned liquid discharge buffer assembly.

[0009] Another object of the present invention is to provide a beverage machine including the above-mentioned liquid outlet device.

[0010] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0011] A liquid outlet buffer assembly is used to be installed between a pumping pipe of a driving pump and a product outlet pipeline, and the liquid outlet buffer assembly includes:

[0012] A first pipeline, a first end of which is connected to the pumping pipe, and a second end of which is connected to the product output pipeline, wherein the inner diameter of the first pipeline is smaller than the inner diameter of the pumping pipe, and the first pipeline is made of elastic material;

[0013] The restriction kit has a restriction channel, the first pipeline is arranged in the restriction channel, and a preset distance is provided between the restriction channel and the outer wall of the first pipeline, so as to limit the deformation of the first pipeline.

[0014] Optionally, in the above-mentioned liquid outflow buffer assembly, along the liquid outflow direction, the inner diameter of the first pipeline gradually decreases or decreases in sections.

[0015] Optionally, in the above-mentioned liquid outlet buffer assembly, the first pipeline includes a transition pipe section and a throttling pipe section which are sequentially connected and communicated, the transition pipe section is used to communicate with the pumping pipe, and the throttling pipe section is used to communicate with the product outlet pipeline;

[0016] The inner diameter of the transition pipe section is greater than the inner diameter of the throttling pipe section.

[0017] Optionally, in the above-mentioned liquid outlet buffer assembly, a second pipeline is further included, and the second pipeline is connected and arranged between the throttling pipe section and the product outlet pipeline;

[0018] The inner diameter of the second pipeline is greater than the inner diameter of the throttling pipe section.

[0019] Optionally, in the above-mentioned liquid outlet buffer assembly, the inner diameter of the throttling pipe section is a preset inner diameter, and the length of the throttling pipe section along the liquid outlet direction is a preset length.

[0020] Optionally, in the above-mentioned liquid outlet buffer assembly, along the liquid outlet direction, the inner diameter of the transition pipe section gradually shrinks to the preset inner diameter; and / or,

[0021] Along the liquid outlet direction, the inner diameter of the second pipeline gradually expands from the preset inner diameter to the inner diameter of the pumping pipe.

[0022] Optionally, in the above-mentioned liquid outlet buffer assembly, the second pipeline is made of elastic material, and the first pipeline and the second pipeline are an integrated pipeline.

[0023] Optionally, in the above-mentioned liquid outlet buffer assembly, the restriction kit includes:

[0024] A first set of components, provided with a first restriction channel, sleeved on a first end of the first pipeline, and used for connecting with the pumping pipe;

[0025] The second set is provided with a second restriction channel, and the second restriction channel and the first restriction channel form the restriction channel. The second set is at least sleeved outside the throttling pipe section and the second pipeline, and is used to connect with the output pipeline.

[0026] Optionally, in the above-mentioned liquid outflow buffer assembly, the first kit and the second kit have the same length along the liquid outflow direction.

[0027] Optionally, in the above-mentioned liquid outlet buffer assembly, the inner diameter of the first pipeline is the same along the liquid outlet direction.

[0028] Optionally, in the above-mentioned liquid outlet buffer assembly, the first pipeline and the restriction kit are an integrated structure.

[0029] A liquid outlet device comprises the above-mentioned liquid outlet buffer assembly, a driving pump and a product outlet pipeline, wherein the driving pump is connected to the first end of the elastic pipeline through the pumping pipe, and the product outlet pipeline is connected to the second end of the elastic pipeline.

[0030] Optionally, in the above-mentioned liquid outlet device, a buffer component is further included, the buffer component is connected and arranged between the first pipeline and the product outlet pipeline, and the inner diameter of the buffer component is larger than the inner diameter of the pumping pipe; and / or,

[0031] The inner diameter of the product output pipeline is smaller than the inner diameter of the pumping pipe.

[0032] A beverage machine comprises the above-mentioned liquid discharge device.

[0033] The liquid outlet buffer component provided by the utility model is used to be installed between a pumping pipe and a product outlet pipeline of a driving pump, the pumping pipe is the outlet pipeline of the driving pump, and the product outlet pipeline is used to discharge liquid, the liquid outlet buffer component comprises an elastic pipeline and a restriction kit, the first end of the elastic pipeline is connected with the pumping pipe, and the second end is connected with the product outlet pipeline, the inner diameter of the elastic pipeline is smaller than the inner diameter of the pumping pipe, so as to play a throttling role, and at the same time the elastic pipeline is made of elastic material, so that the elastic pipeline can perform a certain deformation buffering and offsetting on the pulse of the liquid, the restriction kit has a restriction channel, the elastic pipeline is arranged in the restriction channel, and the outer wall of the elastic pipeline and the restriction channel are spaced at a preset distance, which is used to accommodate the deformation of the elastic pipeline and limit the extreme degree of its deformation, so as to avoid the elastic pipeline from being burst and improve the service life of the elastic pipeline. The driving pump pumps the liquid in the form of pulses. The liquid passes through the pumping pipe, the elastic pipe and the output pipe in sequence. When the liquid enters the elastic pipe from the pumping pipe, it is affected by the change in the inner diameter of the pipe, and a throttling effect is generated in the elastic pipe. The deformation of the elastic pipe can neutralize the pulse of the liquid, thereby ensuring the smooth flow of the liquid in the output pipe.

[0034] Compared with the prior art, the liquid outlet buffer assembly provided by the utility model utilizes the high elasticity and high reset property of the elastic pipeline itself to absorb the pulses at the output end of the peristaltic pump, thereby alleviating the splashing problem when the liquid enters the finished cup or shaker. Especially for liquids with high viscosity, when the peristaltic pump runs at a low speed, the liquid output accuracy can be effectively improved, and it has the advantages of simple structure and low cost.

[0035] The liquid outlet device and beverage machine disclosed in the present invention include the above-mentioned liquid outlet buffer assembly. Due to the above-mentioned liquid outlet buffer assembly, the above-mentioned beneficial effects are also achieved. Other structures refer to the prior art and will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0037] Figure 1 It is a front view of the first liquid outlet buffer assembly disclosed in the embodiment of the utility model;

[0038] Figure 2 for Figure 1 Sectional view at AA in the middle;

[0039] Figure 3 A side view of the first liquid outlet buffer assembly disclosed in the embodiment of the utility model;

[0040] Figure 4 This is an axonometric diagram of the first liquid outlet buffer assembly disclosed in the embodiment of the utility model;

[0041] Figure 5 It is a front view of the second liquid outlet buffer assembly disclosed in the embodiment of the utility model;

[0042] Figure 6 for Figure 5 Cross-section at the middle BB;

[0043] Figure 7 A side view of a second liquid discharge buffer assembly disclosed in an embodiment of the utility model;

[0044] Figure 8 It is an axonometric view of the second liquid outlet buffer assembly disclosed in the embodiment of the utility model;

[0045] Fig. 9 It is a front view of the third liquid outlet buffer assembly disclosed in the embodiment of the utility model;

[0046] Fig.10 for Fig. 9 Sectional view at CC;

[0047] Fig.11 It is a side view of the third liquid outlet buffer assembly disclosed in the embodiment of the utility model;

[0048] Fig.12 This is an axonometric view of a third liquid outlet buffer assembly disclosed in an embodiment of the utility model;

[0049] Fig.13 It is an axonometric view of the beverage machine disclosed in the embodiment of the utility model;

[0050] Fig.14 This is a cross-sectional view of a beverage machine disclosed in an embodiment of the utility model.

[0051] Wherein, 100 is a first pipeline, 101 is a positioning portion, 110 is a transition pipe section, 120 is a throttling pipe section, and 130 is a second pipeline;

[0052] 200 is a restriction kit, 201 is a threaded connection portion, 202 is a positioning matching portion, 210 is a first kit, and 220 is a second kit;

[0053] 300 is a sink, 310 is an operating table, 320 is a display screen, 330 is a perspective window, 340 is an empty cup tray, 350 is a liquid outlet, 360 is an ice trough, 370 is a load-bearing module, 380 is a liquid outlet device, 390 is a machine head assembly, and 400 is an under-table assembly. DETAILED DESCRIPTION

[0054] The core of the utility model is to disclose a liquid outlet buffer component to reduce the influence of the pulse output of a peristaltic pump on liquid output.

[0055] Another core of the utility model is to disclose a liquid outlet device including the above-mentioned liquid outlet buffer assembly.

[0056] Another core of the utility model is to disclose a beverage machine including the above-mentioned liquid outlet device.

[0057] The following is an explanation of the embodiments with reference to the accompanying drawings. In addition, the embodiments shown below do not limit the contents of the utility model described in the claims. In addition, the entire contents of the structures represented by the following embodiments are not limited to those necessary as solutions of the utility model described in the claims. It should be noted that, for ease of description, only the parts related to the utility model are shown in the accompanying drawings. In the absence of conflict, the embodiments in the utility model and the features in the embodiments can be combined with each other.

[0058] Combination Figure 1-Figure 12The liquid outlet buffer assembly disclosed in the embodiment of the utility model is used to be installed between the pumping pipe and the output pipeline of the driving pump. The pumping pipe is the outlet pipeline of the driving pump (the elastic delivery hose of the peristaltic pump), and the output pipeline is used to output the liquid. The liquid outlet buffer assembly includes a first pipeline 100 and a restriction kit 200. The first end of the first pipeline 100 is connected to the pumping pipe, and the second end is connected to the output pipeline. The inner diameter of the first pipeline 100 is smaller than the inner diameter of the pumping pipe to play a throttling role. At the same time, the first pipeline 100 is made of elastic material, so that the first pipeline 100 can perform a certain deformation buffering and offset of the pulse of the liquid. The restriction kit 200 has a restriction channel, the first pipeline 100 is arranged in the restriction channel, and the outer wall of the first pipeline 100 and the restriction channel are spaced at a preset distance, which is used to accommodate the deformation of the first pipeline 100 and limit the extreme degree of its deformation to avoid the first pipeline 100 from being burst.

[0059] The driving pump pumps the liquid in the form of pulses, and the liquid passes through the pumping pipe, the first pipeline 100 and the output pipeline in sequence. When the liquid enters the first pipeline 100 from the pumping pipe, it is affected by the change in the inner diameter of the pipeline, and a throttling effect is generated at the first pipeline 100. The deformation of the first pipeline 100 can neutralize the pulse of the liquid, thereby ensuring the smooth flow of the liquid in the output pipeline.

[0060] Compared with the prior art, the liquid outlet buffer assembly disclosed in the embodiment of the utility model utilizes the high elasticity and high reset property of the first pipeline 100 itself to absorb the pulse of the output end (pumping tube) of the peristaltic pump, thereby alleviating the splashing problem when the liquid enters the finished cup or shaker. For liquids with high viscosity, when the peristaltic pump runs at a low speed, the liquid output accuracy can be effectively improved, and it has the advantages of simple structure and low cost.

[0061] Specifically, along the liquid outlet direction, the inner diameter of the first pipeline 100 may be kept the same, or the inner diameter of the first pipeline 100 may be gradually reduced or may be reduced in sections.

[0062] In one embodiment, in combination Figure 9-12 The first pipeline 100 is an integrated structure, and its inner diameter is the same at all places and is smaller than the inner diameter of the pumping tube. The restriction kit 200 is an integrated structure. After the liquid enters the first pipeline 100, since the inner diameter of the first pipeline 100 is smaller than the inner diameter of the pumping tube (about 70% of the inner diameter of the pumping tube), the liquid will cause the first pipeline 100 to expand outward during the flow of the liquid in the first pipeline 100, so as to neutralize the pulse in the liquid. At the same time, the inner wall of the restriction channel of the restriction kit 200 can limit the volume of the first pipeline 100 expanding outward, while ensuring the stability of liquid transportation, it can also avoid excessive deformation of the first pipeline 100.

[0063] The two ends of the restriction kit 200 are respectively used to connect with the pumping pipe and the output pipe. Fig.10 and Fig.12 , both ends of the restriction kit 200 are provided with threaded connection parts 201, which are used to be threadedly connected with the pumping pipe and the output pipeline through connecting parts such as pipe joints.

[0064] The two ends of the first pipeline 100 are respectively positioned and connected to the two ends of the restriction kit 200. Figure 6 Positioning portions 101 are provided at both ends of the first pipeline 100 , and corresponding positioning matching portions 202 can be provided on the inner wall of the end of the limiting channel, so that the first pipeline 100 and the limiting kit 200 can be positioned and assembled by assembling the positioning portions 101 and the positioning matching portions 202 .

[0065] The positioning portion 101 and the positioning matching portion 202 can both be step-shaped positioning structures, and the first pipeline 100 and the restriction kit 200 can be prepared by an integral molding method of overmolding.

[0066] In another embodiment, the first pipeline 100 includes a transition pipe section 110 and a throttling pipe section 120 which are connected and communicated in sequence, wherein the transition pipe section 110 is used to communicate with the pumping pipe, and the throttling pipe section 120 is used to communicate with the product pipeline. The inner diameter of the transition pipe section 110 is larger than the inner diameter of the throttling pipe section 120, and the throttling pipe section 120 is arranged in the restricted channel and is made of elastic material, that is, in the first pipeline 100, the throttling pipe section 120 is the narrowest part of the inner diameter, and the liquid produces a throttling effect at the throttling pipe section 120, and the pulse in the liquid will be alleviated or neutralized here by the elasticity of the throttling pipe section 120, and the throttling pipe section 120 is arranged in the restricted channel, and the restriction of the inner wall of the restricted channel can avoid excessive deformation or rupture of the throttling pipe section 120.

[0067] Furthermore, the liquid outlet buffer assembly also includes a second pipeline 130, which is connected between the throttling pipe section 120 and the product outlet pipeline. The inner diameter of the second pipeline 130 is larger than the inner diameter of the throttling pipe section 120 and smaller than the inner diameter of the pumping pipe, and is used to achieve stable transportation of liquid between the first pipeline 100 and the product outlet pipeline. The second pipeline 130 can also be made of elastic material.

[0068] It is understandable that the above-mentioned transition pipe section 110, throttling pipe section 120 and second pipeline 130 can be an integrated structure and are prepared by an elastic material through an integrated molding method.

[0069] In order to ensure the smooth flow of liquid in the first pipeline 100, the inner diameter of the throttling pipe section 120 is defined as a preset inner diameter, and the length of the throttling pipe section 120 along the liquid outlet direction is defined as a preset length. Then, in the direction from the first end to the second end of the first pipeline 100 (liquid outlet direction), the inner diameter of the transition pipe section 110 gradually shrinks to the preset inner diameter, and the inner diameter of the second pipeline 130 gradually expands from the preset inner diameter to the inner diameter of the pumping pipe, so that the liquid transitions smoothly in the first pipeline 100.

[0070] In one embodiment, the transition pipe section 110, the second pipe 130 and the throttling pipe section 120 have the same outer diameter, the first pipe 100 and the second pipe 130 are an integrated structure, referred to as an integrated elastic pipe, the axial extension length of the integrated elastic pipe is greater than or equal to 300 mm, the transition pipe section 110 accounts for 3 / 4 of the overall length of the integrated elastic pipe, the inner diameter of the throttling pipe section 120 is 35%-50% of its outer diameter, and the extension length of the throttling pipe section 120 is 5 mm-10 mm, that is, along the flow direction of the liquid, the inner diameter of the first 3 / 4 of the integrated elastic pipe section gradually decreases to ensure the stability of the flow of the liquid during the throttling process until it reaches the throttling pipe section 120 to achieve throttling. After flowing out of the throttling pipe section 120, the inner diameter of the integrated elastic pipe gradually expands until it expands to the same as the inner diameter of the pumping pipe, so as to release pressure and stabilize the flow. The liquid outlet buffer component can reduce liquid splashing during the beverage making process. At the same time, when the peristaltic pump runs at a low speed, it can improve the accuracy of the liquid output with high viscosity (it has been verified by experiments that the deviation can be controlled within ±0.5g).

[0071] When the peristaltic pump is working, the liquid passes through the pumping tube and enters the integrated elastic pipeline. As the inner diameter of the transition pipe section 110 decreases, the liquid flow rate increases, and a throttling effect is generated at the throttling pipe section 120, causing the throttling pipe section 120 to expand and neutralize the pulse in the liquid. Since the throttling pipe section 120 is restricted by the outer restriction kit 200, the liquid can flow continuously and smoothly at the throttling pipe section 120. After the liquid flows out from the second pipeline 130, it flows out through the output pipeline for output. When the peristaltic pump stops working, the liquid flow in the integrated elastic pipeline decreases, and the integrated elastic pipeline can use its own elasticity to restore to its original state.

[0072] The specific design parameters of the first pipeline 100 and the throttling pipe section 120 can be adjusted according to factors such as the medium characteristics of the liquid (medium viscosity, factors to consider whether it is inhaled), the output volume, the speed and number of rollers, etc. It should be noted that if the extension length of the first pipeline 100 or the throttling pipe section 120 is too short, the effect of alleviating pulsation will be poor. If the extension length is too long, it will occupy too much space, resulting in an excessively large volume of equipment such as the liquid dispensing device and the beverage dispenser.

[0073] In a specific embodiment disclosed in the present utility model, the restriction kit 200 includes a first kit 210 and a second kit 220. The first kit 210 is provided with a first restriction channel, which is sleeved on the first end of the first pipeline 100 and is used to connect to the pumping pipe. The second kit 220 is provided with a second restriction channel. The second restriction channel and the first restriction channel form the above-mentioned restriction channel. The second kit 220 is sleeved on the second end of the first pipeline 100 and is used to connect to the product pipeline.

[0074] The first set 210 and the second set 220 can be arranged as a split structure, and the axial extension lengths (i.e., the extension lengths in the liquid outlet direction) of the first set 210 and the second set 220 can be the same or different, which at least ensures that the throttling pipe section 120 is located in the restriction channel (the first restriction channel or the second restriction channel). This split structure has a large degree of freedom in installation and can be applied to situations where the installation accuracy between the pumping pipe and the product outlet pipeline is low.

[0075] For example, when the second pipeline 130 is not arranged between the first pipeline 100 and the product pipeline, the second kit 220 is at least arranged outside the throttling pipe section 120. When the second pipeline 130 is arranged between the first pipeline 100 and the product pipeline, the second kit 220 is at least arranged outside the throttling pipe section 120 and the second pipeline 130. In addition, the second kit 220 can also be arranged outside a part of the transition pipe section 130 and does not overlap with the first kit 210.

[0076] The first pipeline 100 and the restriction kit 200 mentioned above may be provided as an integrated structure.

[0077] Combination Fig.13 and Fig.14 The liquid outlet device 380 disclosed in the utility model includes the above-mentioned liquid outlet buffer assembly, a driving pump and a product outlet pipeline. The driving pump delivers the liquid by squeezing and releasing the pumping tube. The pumping tube is connected to the first end of the first pipeline 100, and the product outlet pipeline is connected to the second end of the first pipeline 100. Due to the above-mentioned liquid outlet buffer assembly, the above-mentioned beneficial effects are also achieved, which will not be described in detail here.

[0078] Furthermore, the liquid outlet device 380 disclosed in the utility model also includes a buffer component, which is connected between the first pipeline 100 and the product output pipeline, and the inner diameter of the buffer component is larger than the inner diameter of the first pipeline 100 (pumping tube) (for example, it can be set to more than 1.3 times the inner diameter of the pumping tube, and its length can be set to between 100mm-200mm, matching the rotation speed of the peristaltic pump). The buffer component is used to cache a certain amount of liquid to ensure a continuous supply of liquid in the product output pipeline.

[0079] The outlet of the product delivery pipeline is used for connection or as a product outlet, and the inner diameter of the product delivery pipeline is set to be smaller than the inner diameter of the pumping pipe, so that the liquid has a larger flow rate after flowing out of the product delivery pipeline. The product delivery pipeline is usually a thin mesh tube with a length greater than or equal to 300 mm, and its inner diameter is preferably set to be smaller than the inner diameter of the first pipeline 100 to ensure a continuous supply of liquid.

[0080] Combination Fig.13 and Fig.14 The beverage machine disclosed in the embodiment of the utility model includes the above-mentioned liquid outlet device 380. Due to the above-mentioned liquid outlet device 380, it also has the above-mentioned beneficial effects. In addition, the beverage machine also includes a water tank 300, an operating table 310, a display screen 320, a perspective window 330, an empty cup tray 340, a liquid outlet 350 (product outlet), an ice trough 360, a load-bearing module 370, a head assembly 390, an under-table assembly 400 and other components. The specific structure and installation form of each component can refer to the existing technology and will not be repeated here.

[0081] The above description of the disclosed embodiments enables professionals and technicians in the field to implement or use the utility model. Various modifications to these embodiments will be obvious to professionals and technicians in the field, and the general principles defined in this article can be implemented in other embodiments without departing from the spirit or scope of the utility model. The specific technical means in some embodiments can be combined in part or in whole into another embodiment without being explicitly excluded by another embodiment. Therefore, the utility model will not be limited to the embodiments shown in this article, but will conform to the widest range consistent with the principles and novel features disclosed in this article.

Claims

1. A liquid outlet buffer assembly, characterized in that: Used to be installed between the pumping pipe of the driving pump and the product pipeline, the liquid outlet buffer assembly includes: a first pipeline (100), a first end of which is connected to the pumping pipe, and a second end of which is connected to the product output pipeline, the inner diameter of the first pipeline (100) being smaller than the inner diameter of the pumping pipe, and the first pipeline (100) being made of an elastic material; The restriction kit (200) has a restriction channel, the first pipeline (100) is arranged in the restriction channel, and a preset distance is provided between the restriction channel and the outer wall of the first pipeline (100), so as to restrict the deformation of the first pipeline (100).

2. The liquid discharge buffer assembly according to claim 1, characterized in that: Along the liquid outlet direction, the inner diameter of the first pipeline (100) decreases gradually or decreases in sections.

3. The liquid discharge buffer assembly according to claim 2, characterized in that: The first pipeline (100) comprises a transition pipe section (110) and a throttling pipe section (120) which are sequentially connected and communicated, the transition pipe section (110) being used to communicate with the pumping pipe, and the throttling pipe section (120) being used to communicate with the output pipeline; The inner diameter of the transition pipe section (110) is greater than the inner diameter of the throttling pipe section (120).

4. The liquid discharge buffer assembly according to claim 3, characterized in that: It also includes a second pipeline (130), the second pipeline (130) being arranged in communication between the throttling pipe section (120) and the product output pipeline; The inner diameter of the second pipeline (130) is greater than the inner diameter of the throttling pipe section (120).

5. The liquid discharge buffer assembly according to claim 4, characterized in that: The inner diameter of the throttling pipe section (120) is a preset inner diameter, and the length of the throttling pipe section (120) along the liquid outlet direction is a preset length.

6. The liquid discharge buffer assembly according to claim 5, characterized in that: Along the liquid outlet direction, the inner diameter of the transition pipe section (110) gradually decreases to the preset inner diameter; and / or, Along the liquid outlet direction, the inner diameter of the second pipeline (130) gradually expands from the preset inner diameter to the inner diameter of the pumping pipe.

7. The liquid discharge buffer assembly according to claim 4, characterized in that: The second pipeline (130) is made of elastic material, and the first pipeline (100) and the second pipeline (130) are an integrated pipeline.

8. The liquid discharge buffer assembly according to claim 7, characterized in that: The restriction kit (200) comprises: A first set (210) is provided with a first limiting channel, is sleeved on a first end of the first pipeline (100), and is used to be connected to the pumping pipe; The second set (220) is provided with a second limiting channel, the second limiting channel and the first limiting channel forming the limiting channel, the second set (220) being at least sleeved outside the throttling pipe section (120) and the second pipeline (130), and being used to be connected to the output pipeline.

9. The liquid discharge buffer assembly according to claim 8, characterized in that: The first set (210) and the second set (220) have the same length along the liquid outlet direction.

10. The liquid discharge buffer assembly according to claim 1, characterized in that: Along the liquid outlet direction, the inner diameter of the first pipeline (100) is the same.

11. The liquid outlet buffer assembly according to any one of claims 1 to 10, characterized in that: The first pipeline (100) and the restriction kit (200) are an integrated structure.

12. A liquid discharge device, characterized in that: It comprises a liquid outlet buffer assembly as claimed in any one of claims 1 to 11, a driving pump and a product outlet pipeline, wherein the driving pump is connected to the first end of the first pipeline (100) through the pumping pipe, and the product outlet pipeline is connected to the second end of the first pipeline (100).

13. The liquid outlet device according to claim 12, characterized in that: It also comprises a buffer component, the buffer component is arranged in communication between the first pipeline (100) and the product output pipeline, and the inner diameter of the buffer component is larger than the inner diameter of the pumping pipe; and / or, The inner diameter of the product output pipeline is smaller than the inner diameter of the pumping pipe.

14. A beverage machine, characterized in that: Comprising the liquid outlet device as described in claim 12 or 13.

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