Liquid outlet device

Abstract

According to the liquid outlet device disclosed by the utility model, the length of the liquid outlet pipe is increased to be more than 150mm, so that liquid remained in the liquid outlet pipe is not easy to drop from the liquid outlet. And meanwhile, the inner diameter of the liquid outlet pipe is reduced, so that the residual liquid in the liquid outlet pipe is not easy to drop from the liquid outlet. In addition, the outer wall of the liquid outlet pipe is coated with the heat preservation layer, so that heat exchange inside and outside the liquid outlet pipe is reduced, and liquid in the liquid outlet pipe is not prone to dripping from the liquid outlet. According to the scheme, the influence of dripping of residual liquid on the quality of drinks can be prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of liquid outlet equipment, more particularly to a liquid outlet device. BACKGROUND

[0002] The description in this section is provided only for background information related to the present disclosure and does not constitute the prior art.

[0003] In the liquid outlet equipment, such as tea machine, coffee machine or other equipment that needs to control the liquid flow accurately, these equipment are usually provided with one or more liquid outlet pipes, the upper end of the liquid outlet pipe is connected with a hose, and the lower end is a liquid outlet port for conveying the liquid from the liquid storage container to the liquid outlet port. However, in the prior art, when the equipment is closed, some liquid often remains in the liquid outlet pipe. These residual liquid will drip from the liquid outlet port under the action of gravity, which affects the quality of the beverage or causes the workbench to be contaminated. In order to solve this problem, the researchers in the field have tried various methods, such as changing the material, shape or inner wall treatment process of the pipe, and optimizing the valve control system. However, these methods are not completely effective in some cases, or increase the complexity and cost of the equipment. Therefore, a simple and effective solution is needed, which can be widely used in various liquid outlet equipment and can eliminate or delay the dripping of liquid from the pipe after the liquid pump or valve is closed.

[0004] It should be noted that the above introduction to the technical background is only for the convenience of clearly and completely describing the technical scheme of the present utility model and facilitating the understanding of the skilled in the art. The above technical scheme cannot be considered as known to the skilled in the art only because it is described in the background section of the present utility model. SUMMARY

[0005] The technical problem to be solved by the present utility model is to provide a liquid outlet device.

[0006] In order to solve the above technical problem, the present utility model provides a liquid outlet device, which is provided with a liquid outlet long pipe, the length of the liquid outlet long pipe is greater than or equal to 150 mm.

[0007] Preferably, the inner diameter of the liquid outlet long pipe is less than or equal to 3 mm.

[0008] Preferably, the length of the liquid outlet long pipe is 150-300 mm, and the inner diameter of the liquid outlet long pipe is 2-3 mm.

[0009] Preferably, the top of the liquid outlet long pipe has a bending part of about 90 degrees.

[0010] Preferably, the outer side of the liquid outlet long pipe is coated with a heat preservation material.

[0011] Preferably, the liquid outlet long pipe is made of 304 stainless steel material.

[0012] Preferably, the liquid outlet device is further provided with a liquid outlet short pipe.

[0013] Preferably, the liquid outlet device further comprises a mounting disc, and the liquid outlet long pipe and the liquid outlet short pipe are mounted in the mounting disc.

[0014] Preferably, the mounting disc is provided with a mounting hole penetrating from top to bottom, and the outer wall of the liquid outlet long pipe is provided with a ring of bosses in the circumferential direction, and the liquid outlet at the lower side of the bosses is inserted into the mounting hole.

[0015] Preferably, the inner wall of the mounting hole is sealed.

[0016] By the above technical scheme, the liquid outlet device has the following beneficial effects:

[0017] The liquid outlet device increases the length of the liquid outlet pipe, so that the liquid remaining in the liquid outlet pipe is not easy to drip from the liquid outlet. Meanwhile, the inner diameter of the liquid outlet pipe is reduced, so that the liquid remaining in the liquid outlet pipe is further not easy to drip from the liquid outlet. In addition, the outer wall of the liquid outlet pipe is coated with a thermal insulation layer, so that the heat exchange between the inside and outside of the liquid outlet pipe is reduced, and the liquid in the liquid outlet pipe is not easy to drip from the liquid outlet. Through the above scheme, the dripping of the residual liquid can be prevented from affecting the quality of the beverage, and the pollution of the workbench by the dripping residual liquid can be avoided. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a structural schematic view of the liquid outlet device of the utility model.

[0019] Figure 2 is a structural schematic view of the liquid outlet long pipe of the utility model.

[0020] Wherein: 1, liquid outlet long pipe; 2, liquid outlet short pipe; 3, mounting disc; 11, bending part; 12, boss; 13, liquid outlet. DETAILED DESCRIPTION

[0021] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0022] It should be noted that in the description of the utility model, the terms "first", "second" and the like are only used for the purpose of description and distinguishing similar objects, and there is no sequence between them, nor can it be understood as indicating or implying relative importance. In addition, in the description of the utility model, unless otherwise stated, the meaning of "multiple" is two or more.

[0023] As shown in Figures 1-2 The present application provides a kind of liquid outlet device, and liquid outlet device is provided with liquid outlet long pipe 1, the length of liquid outlet long pipe 1 is greater than or equal to 150 mm.In vertical drop, residual liquid in liquid outlet pipe is affected by gravity, but due to surface tension, internal pressure change of pipeline, pipe wall adhesion and many other factors, residual liquid forms droplet shape in pipeline, adheres to pipe wall, or spreads on the surface of pipe wall, hinders its continuous flow.When vertical liquid outlet pipeline is long enough, the flow time of residual liquid in the pipeline will also be correspondingly extended, and the flow rate is reduced, and the flow of liquid in the pipeline becomes more slowly, and the larger inner wall surface of the pipeline can provide sufficient adhesion or spreading for liquid droplets, thereby slowing down or even stopping the falling of residual liquid.The manifestation at discharge port is delay or no longer dripping.In addition, when stopping discharging, the surface tension of liquid droplets at the liquid outlet 13 of the liquid outlet pipe makes the liquid droplets continuously shrink inward, similar to forming a thin film layer.In addition, affected by gas flow, temperature change and the like, the pressure in the pipeline fluctuates, and when the pressure in the pipeline is large enough, the residual liquid can be compressed in the pipeline, slowing down or stopping the further falling of residual liquid.

[0024] Further, the inner diameter of the liquid outlet long pipe 1 is less than or equal to 3 mm.Due to the small inner diameter of the liquid outlet pipe, under the action of sufficient surface tension and adhesion, residual liquid no longer flows continuously, but forms droplets, adheres to the pipe wall or spreads along the pipe wall, and the liquid droplets attract and balance each other, thereby reducing the falling speed.

[0025] In some preferred embodiments, the length of the liquid outlet long pipe 1 is 150-300 mm, and the inner diameter of the liquid outlet long pipe 1 is 2-3 mm.By further limiting the length and inner diameter of the liquid outlet long pipe 1, the liquid outlet process can be kept stable and accurate.Specifically, the liquid outlet long pipe 1 with a length of 150-300 mm can ensure that the liquid has a sufficient path during flow, thereby reducing the flow rate fluctuation of the liquid, and after discharging, the falling of residual liquid can be slowed down, without increasing too much cost and occupying limited space, without affecting the functional module layout of the liquid outlet equipment.The design of the inner diameter of 2-3 mm can control the flow of the liquid, make the liquid flow more uniform, reduce the liquid residue in the liquid outlet pipeline after discharging, and reduce the impact of the liquid on the liquid outlet 13, thereby reducing or avoiding the phenomenon of liquid dripping after closing the liquid pump or valve.

[0026] In some preferred embodiments, as shown in Figure 2As shown, the top of the liquid outlet long pipe 1 of the liquid outlet device has a bending part 11 of about 90 degrees. The design of the bending part 11 slows down the flow rate, reduces the pressure in the pipe, and reduces the liquid residue after liquid outlet; at the same time, it improves the liquid distribution, so that the liquid remaining in the pipe is not easy to flow out directly, thereby slowing down or even preventing liquid dripping.

[0027] In some embodiments, the liquid outlet long pipe 1 can be made of 304 stainless steel material to ensure the safety of making drinks for eating. A bending part 11 of about 90 degrees can be formed at the top of the liquid outlet long pipe 1 by mechanical bending, heat treatment or mold forming.

[0028] In some embodiments, the outer side of the liquid outlet long pipe 1 is covered with a heat preservation material. The heat preservation material can take various forms, such as foam material, polyurethane material or other suitable heat preservation materials. The selection of the heat preservation material should consider its heat preservation performance, durability and compatibility with the material of the liquid outlet long pipe 1. Specifically, the heat preservation material can be fixed on the outer side of the liquid outlet long pipe 1 by pasting, covering or injecting, etc. to ensure that it can effectively play a heat preservation role for a long time. The heat preservation material can reduce the heat exchange between the liquid outlet long pipe 1 and the external environment.

[0029] In some embodiments, the liquid outlet device is also provided with a liquid outlet short pipe 2. The liquid outlet short pipe 2 cooperates with the liquid outlet long pipe 1, and different types of liquid outlet pipes can be selected for different types of liquid to improve the liquid outlet efficiency of the liquid outlet equipment. The liquid outlet device also includes a mounting disc 3, and the liquid outlet long pipe 1 and the liquid outlet short pipe 2 are installed in the mounting disc 3. The mounting disc 3 provides a fixed and supported structure, so that the liquid outlet long pipe 1 and the liquid outlet short pipe 2 can be stably installed in the equipment, avoiding the position change of the pipe due to vibration or other reasons during use. The mounting disc 3 is provided with a mounting hole penetrating from top to bottom, and the outer wall of the liquid outlet long pipe 1 is provided with a ring of bosses 12 in the circumferential direction, and the liquid outlet 13 on the lower side of the boss 12 is inserted into the mounting hole. The boss 12 provides additional support and fixing effect to ensure that the liquid outlet long pipe 1 does not loosen or shift during use. The size and shape of the mounting hole can be adjusted according to the specifications of the liquid outlet long pipe 1 to ensure a tight fit. For example, mounting holes of different diameters can be used to adapt to liquid outlet long pipes 1 of different sizes. As a preferred embodiment, the inner wall of the mounting hole can be specially treated, such as adding a sealing ring or coating a leak-proof material, to further improve the sealing effect.

[0030] The following are the experimental data of the liquid outlet long pipe of the present application:

[0031]

[0032] Conclusion: In the same conditions, the smaller the diameter of the outlet pipe, the better the effect of preventing dripping. Especially when the diameter is 2-3 mm, the average first dripping time after discharging is more than 110 seconds.

[0033] Analysis: The liquid in the pipe is affected by surface tension. Surface tension makes the liquid have a tendency to maintain its own shape. When the pipe diameter is small, the liquid droplets formed by the residual liquid under the action of surface tension are more easily attracted and balanced with each other, and the combined effect of adhesion to the pipe wall is more difficult to drip.

[0034] Conclusion: In the same conditions, the longer the outlet pipe, the better the effect of preventing dripping. Especially when the length of the outlet pipe is 200-300 mm, the average first dripping time after discharging is more than 110 seconds.

[0035] Analysis: The longer the outlet pipe, the more the liquid in the outlet pipe is affected by surface tension and forms small droplets with certain viscosity. When descending vertically, the flow of the droplets is hindered, and the speed slows down during the descending process. When the droplets come into contact with the pipe wall, they will adhere to the pipe wall or spread on the surface of the pipe wall under the action of surface tension. Because a straight pipe of sufficient length has a large inner wall surface for the droplets to adhere or spread, the falling of the residual liquid is slowed down or prevented. At the discharge port, the dripping is delayed or no longer occurs.

[0036] In addition, when discharging is stopped, the air pressure in the outlet pipe changes, and when the pressure in the pipe is sufficient, the residual liquid can be compressed in the pipe. At the discharge port, the residual liquid is constantly shrinking inward under the action of surface tension, similar to forming a thin film layer, which can prevent the residual liquid from falling further.

[0037] Conclusion: In the same conditions, the elbow pipe has a good effect of preventing dripping, and the average first dripping time after discharging is more than 115 seconds.

[0038] Analysis: Bending the top of the outlet pipe (90° right-angle bend or approximately 90° bend) slows down the flow rate and reduces the pressure in the pipe, which can reduce the residual liquid after discharging; at the same time, it improves the distribution of the liquid, so that the liquid remaining in the pipe is not easy to flow out directly, thereby slowing down or even preventing the liquid from dripping.

[0039] Conclusion: In the same conditions, the closer the ambient temperature is to the material temperature, the longer the average time of the first dripping. When the temperature is lower, the average time of the first dripping is relatively longer.

[0040] Analysis: when the ambient temperature and material temperature close, the heat exchange between the two is small, the system is in a relatively stable state. In this case, due to the small temperature difference, the speed of heat exchange is slow, the residual liquid molecule activity is relatively stable, and the flow is slow, so the drop time is relatively long.

[0041] In addition, the viscosity of the liquid will increase with the decrease of temperature. In the low temperature environment, the molecular activity is poor, the liquid drop flowability in the outlet pipe is poor, and the liquid drops formed by the residual liquid under the action of surface tension are attracted to each other under the action of viscosity, and the adhesion force of the pipe wall helps the residual liquid to remain in the pipeline without dropping. Therefore, wrapping the outlet pipe with thermal insulation material can make the liquid drops in the outlet pipe not easy to drop.

[0042] The above-described embodiments are only preferred embodiments for fully illustrating the present application, and the protection scope of the present application is not limited thereto. The equivalent substitutions or transformations made by the skilled in the art on the basis of the present application are within the protection scope of the present application. The protection scope of the present application is subject to the claims.

Claims

1. A liquid outlet device, the liquid outlet device being provided with a liquid outlet long tube, characterized in that, The length of the liquid outlet long pipe is greater than or equal to 150 mm, the inner diameter of the liquid outlet long pipe is less than or equal to 3 mm, and the top of the liquid outlet long pipe has a bending part of about 90 degrees.

2. The liquid outlet device according to claim 1, characterized in that, The length of the liquid outlet long pipe is 150-300 mm, and the inner diameter of the liquid outlet long pipe is 2-3 mm.

3. The liquid outlet device according to claim 2, characterized in that, The outer side of the liquid outlet long pipe is covered with a heat preservation material.

4. The liquid outlet device according to claim 2, characterized in that, The liquid outlet long pipe is made of 304 stainless steel material.

5. The liquid outlet device according to claim 2, characterized in that, The liquid outlet device is further provided with a liquid outlet short pipe.

6. The liquid outlet device according to claim 5, characterized in that, The liquid outlet device further comprises a mounting disc, and the liquid outlet long pipe and the liquid outlet short pipe are mounted in the mounting disc.

7. The liquid outlet device according to claim 6, characterized in that, The mounting disc is provided with a mounting hole penetrating from top to bottom, the outer wall of the liquid outlet long pipe is provided with a ring of bosses in the circumferential direction, and the liquid outlet at the lower side of the boss is inserted into the mounting hole.

8. The liquid outlet device according to claim 7, characterized in that, The inner wall of the mounting hole is sealed.

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