Optimized spraying method and device
By introducing pump air function and gas-liquid mixing unit into the spray packaging technology, the problem of improving spray effect and manufacturing difficulty in the prior art is solved, and more efficient spray effect and reducing the difficulty of mold maintenance is achieved.
Patent Information
- Application Number
- CN202410377519.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-29
- Publication Date
- 2025-01-07
AI Technical Summary
The existing spray packaging technology has technical barriers in improving the atomization effect and reducing the difficulty of manufacturing, especially the difficulties in manufacturing and maintenance of fine molds, which lead to difficulties in mass production of high-end spray devices.
The pump air function is introduced into the pump body, mixing with the liquid through the gas-liquid mixing unit, increasing the flow rate and turbulence intensity, thereby improving the spray effect, and designing an optimized pump body assembly and channel structure to achieve gas-liquid mixing.
It effectively improves the spray effect, reduces the difficulty of mold manufacturing and maintenance, makes high-end spray devices easier to produce, and fills the technical gap.
Smart Images
Figure CN119259294A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of packaging, in particular to the technical field of spray packaging, and specifically to an optimized spray method and a device thereof. Background Art
[0002] Whether it is daily chemical products, medicines, cosmetics, food, or condiments, etc., spray packaging is widely used. Because the spray method has many advantages such as non-contact, uniform distribution and quantitative, it is gradually gaining more and more favor in the packaging field.
[0003] At present, common spray packaging is a single-phase spray device, which draws liquid from the packaging container into the pump body, and then uses the piston to pressurize the liquid, flows to the spray head, and sprays out from the spray sheet. The spray effect is closely related to the flow rate and turbulence intensity of the liquid inside the spray head. In order to improve the spray effect and produce finer liquid mist, most of the existing technical solutions are solved by the following two measures: first, the flow rate is increased by reducing the nozzle diameter; second, the turbulence intensity is increased by optimizing the structure of the spray front chamber. However, it is very difficult to manufacture a spray sheet structure that is too small. This is because the production of the spray sheet requires the assembly of some extremely small parts into a mold, which is subject to many restrictions from mold processing technology and material technology, making the technical difficulty of mold manufacturing very high. These small mold parts are also very easy to be damaged during use, which also makes mold maintenance extremely difficult. Therefore, various methods of improving the atomization effect by reducing the nozzle diameter are not easy to implement, forming an obvious technical barrier, resulting in many companies being unable to mass-produce such high-end spray devices.
[0004] Currently, there is a lack of an optimized spray device that can improve the atomization effect and user experience while reducing the manufacturing difficulty, and at the same time has the characteristics of stable quality and easy mold maintenance. Summary of the invention
[0005] In view of the problems existing in the prior art, the present invention provides an optimized spraying method and device thereof to solve at least one of the above technical problems.
[0006] In order to achieve the above object, the present invention provides an optimized spraying method, comprising the following steps: Introduce a pumping function into the pump body to suck in gas; The gas is pressurized so that it flows through the gas-liquid mixing unit and mixes with the liquid; The gas-liquid mixture flows to the spray plate and sprays out a mist of liquid.
[0007] Further preferably, the method further comprises the following steps: The liquid is sucked in by the pump body; The liquid is pumped out to flow to the gas-liquid mixing unit.
[0008] The present invention introduces a method of pumping air function into the pump body component, so that the gas is involved in the spraying process, effectively increasing the flow rate and turbulence intensity, thereby effectively improving the atomization effect.
[0009] The present invention also provides an optimized spray device, comprising: A pump assembly, comprising a cylinder, a piston, a piston rod, and a one-way valve, wherein at least one group of the pump assembly is provided with a pumping function; A spray assembly, including a spray head and a spray sheet, for spraying liquid, gas, or a gas-liquid mixture; Channels, including liquid channels, gas channels, and gas-liquid mixed flow channels; The channel is provided with a gas-liquid mixing unit, where the liquid flowing out of the liquid channel and the gas flowing out of the gas channel are mixed and flow to the spray assembly before being sprayed out.
[0010] The present invention introduces a pumping function into the pump body component so that the gas participates in the spraying process, which can effectively increase the flow rate of the gas-liquid mixture, increase the turbulence intensity, and significantly improve the spraying effect.
[0011] Further preferably, at least one of the one-way valves is composed of an elastic sealing sheet and a vent hole arranged on the inner side of the gas pump piston.
[0012] Further preferably, the gas-liquid mixing unit includes at least one variable cross-section airflow channel, along the airflow direction, the diameter of the airflow channel changes from large to small to form a contraction section, and then changes from small to large to form a diffusion section, and the section with the smallest diameter between the contraction section and the diffusion section forms the throat section; a liquid outlet of the liquid channel is provided at a position close to the throat section of the throat section or the diffusion section of the variable cross-section airflow channel.
[0013] Further preferably, the cone angle α of the contraction section of the variable cross-section airflow channel is greater than the cone angle β of the diffusion section, and the diameter of the throat section is less than half of the major diameter D of the diffusion section.
[0014] Further preferably, the liquid channel is provided with a check valve.
[0015] Further optionally, the pump body assembly has two groups, one group is used to pump out liquid, and the other group is used to pump out gas.
[0016] Further preferably, the two groups of pump body components are coaxial, the liquid pump piston rod and the gas pump piston rod are combined into a sleeve, a central tube flows a fluid medium, and another fluid medium flows in the sleeve interlayer.
[0017] Further preferably, in the two groups of pump body components, the upper pump is a gas pump, and the lower pump is a liquid pump, the casing and the center tube circulate liquid, and the casing interlayer circulates gas.
[0018] Further optionally, the two groups of pump body components are not coaxial, the liquid channel and the gas channel are independently arranged, and the two merge in the gas-liquid mixing unit.
[0019] Beneficial effects: The present invention introduces a pumping function into the pump body assembly so that the gas participates in the spraying process. Compared with a single-liquid phase spray device, it can effectively increase the flow rate of the gas-liquid mixture and increase the turbulence intensity, thereby effectively improving the atomization effect under the conditions of existing mold technology. On the other hand, compared with existing spray methods, the difficulty of mold manufacturing can be significantly reduced while achieving the same spray effect, and the maintenance and care of the mold can also be made easier. Therefore, the use of the technical method and design scheme of the present invention can effectively improve the spray quality, reduce technical barriers, and enable enterprises to more easily produce high-end spray devices, thus filling a technical gap. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.
[0021] In the attached picture: Figure 1 It is a cross-sectional view of a specific embodiment 1 of the present invention; Figure 2 is a cross-sectional view of a piston in a second specific embodiment of the present invention in a highest position; Figure 3 It is a cross-sectional view of the piston of the specific embodiment 2 of the present invention in the open position of the liquid / gas one-way valve; Figure 4 is a cross-sectional view of a piston in a specific embodiment 2 of the present invention in a lowest position; Figure 5 is a cross-sectional view of a piston in a third specific embodiment of the present invention in a highest position; Figure 6 It is a cross-sectional view of the piston of the specific embodiment 3 of the present invention in the open position of the liquid / gas one-way valve; Figure 7 is a cross-sectional view of a piston in a specific embodiment 3 of the present invention in the lowest position; Among them: 1 is the infusion sliding rod, 1.1 is the liquid pump cylinder, 1.2 is the liquid pump piston, 1.3 is the liquid pump piston rod, 1.4 is the piston rod limiter, 1.5 is the liquid pump cylinder ventilation hole, 1.6 is the liquid outlet one-way valve hole, 1.7 is the liquid inlet one-way valve, 1.8 is the check valve, 1.9 is the air guide groove, 2.1 is the gas pump cylinder, 2.2 is the gas pump piston, 2.3 is the gas pump piston rod, 2.5 is the elastic sealing sheet, 2.6 is the gas outlet one-way valve hole, 2.7 is the vent hole, 3 is the spray head, 3.4 is the spray head plug, 3.8 is the spray sheet, 5 is the connecting cover, 6.5 is the throat section, 6.7 is the contraction section, 6.9 is the diffusion section, 8 is the liquid channel, 8.3 is the liquid outlet, 9 is the gas channel, and 10 is the return spring. DETAILED DESCRIPTION
[0022] It should be noted that: in the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other; the described embodiments are only embodiments of a part of the present invention, not all of the embodiments; the following description of the embodiments is merely illustrative, to facilitate a better understanding of the present invention, and does not constitute an improper limitation of the present invention; in addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.
[0023] The series of embodiments of the present application and the features contained therein can be applied to various packaging solutions for spray products that need to be optimized, such as daily chemical products, medicines, cosmetics, foods, condiments, etc., and similar effects can be achieved by applying any of the series of embodiments of the present application, or by recombining and designing other similar technical solutions using the various technical features in the present application. The series of embodiments of the present application can also be applied to any other scenarios of spray devices that need to be optimized in the foreseeable future.
[0024] The present invention will be further described below in conjunction with the accompanying drawings. Several embodiments in the accompanying drawings are specific devices that use an optimized spray method of the present invention.
[0025] See also Figure 1 , Specific embodiment 1, an optimized spray device, including a pump body assembly, a spray assembly, and a channel.
[0026] The pump assembly has only one set, which is used to pump out gas and is composed of a gas pump cylinder 2.1, a gas pump piston 2.2, a gas pump piston rod 2.3, and a one-way valve; The one-way valve has a portion for air intake, which is composed of an elastic sealing sheet 2.5 and a vent hole 2.7 arranged on the inner side of the gas pump piston 2.2. During the suction stroke, as the gas pump piston 2.2 rises, the pressure in the gas pump cylinder 2.1 decreases, and the external air pushes the elastic sealing sheet 2.5 open through the vent hole 2.7 to achieve air intake; during the spray stroke, as the gas pump piston 2.2 is pressed downward, the pressure in the gas pump cylinder 2.1 increases, so that the elastic sealing sheet 2.5 is compressed and close to the vent hole 2.7, forming a seal and establishing the pump-out pressure.
[0027] The spray assembly comprises a spray head 3 and a spray sheet 3.8, and is used to spray liquid, gas, or a gas-liquid mixture.
[0028] The channels include a liquid channel 8, a gas channel 9, and a gas-liquid mixed flow channel (including a diffusion section 6.9 and subsequent flow channels); A check valve 1.8 is provided in the liquid passage 8. The check valve 1.8 is formed by an integrally-injected "eight"-shaped opening structure. When the liquid flows forward, the "eight"-shaped structure is pressurized at the bottom, the top opening is opened, and the valve is opened. When the liquid flows reversely, the "eight"-shaped structure is pressurized at the top, the top openings are pressed against each other, and the valve is closed. Of course, the check valve can also be in other forms, such as a one-way valve in the form of a gravity ball, or a plastic one-way valve, or an elastic diaphragm one-way valve, etc.
[0029] In this embodiment, the liquid channel 8 and the gas channel 9 are independent of each other. The gas-liquid mixing unit is arranged at the intersection of the liquid channel 8 and the gas channel 9, where the liquid flowing out of the liquid channel and the gas flowing out of the gas channel mix and flow to the spray assembly before being sprayed out.
[0030] The gas-liquid mixing unit comprises a variable cross-section airflow channel. Along the airflow direction, the diameter of the airflow channel changes from large to small to form a contraction section 6.7, and then changes from small to large to form a diffusion section 6.9. The section with the smallest diameter between the contraction section and the diffusion section forms a throat section 6.5. The throat section 6.5 of the variable cross-section airflow channel is provided with a liquid outlet 8.3 of the liquid channel. The cone angle α of the contraction section of the variable cross-section airflow channel of this embodiment is greater than the cone angle β of the diffusion section, and the diameter of the throat section is less than half of the major diameter D of the diffusion section.
[0031] The working principle of this embodiment is that the gas is pumped out by the gas pump, passes through the gas channel to the contraction section 6.7, and the gas channel diameter gradually decreases and reaches the minimum when it reaches the throat section 6.5. At this time, the gas flow rate increases significantly, the pressure decreases, and negative pressure is generated, so that the liquid in the liquid channel 8 is sucked out from the liquid outlet 8.3, mixed with the gas, flows to the diffusion section 6.9 and continues to flow to the spray head. Since the density of the gas-liquid mixture is greatly reduced relative to the density of the liquid, according to Bernoulli's law and the continuity equation, the flow rate of the gas-liquid mixture reaching the spray chamber set in the spray head will be significantly increased, and the turbulence intensity will also be greatly increased. The gas-liquid mixture will be sprayed out from the nozzle of the spray piece at a higher flow rate, thereby obtaining a more optimized atomization effect.
[0032] See also Figure 2-4 , Specific embodiment 2, an optimized spray device, including a pump body assembly, a spray assembly, and a channel.
[0033] The pump body assembly has two groups, one group is used to pump out liquid, consisting of a liquid pump cylinder 1.1, a liquid pump piston 1.2, a liquid pump piston rod 1.3, and a one-way valve; the other group is used to pump out gas, consisting of a gas pump cylinder 2.1, a gas pump piston 2.2, a gas pump piston rod 2.3, and a one-way valve.
[0034] In this embodiment, the two groups of pump body components are coaxially arranged, the upper pump is a gas pump, and the lower pump is a liquid pump.
[0035] One of the one-way valves is for air intake, and is composed of an elastic sealing sheet 2.5 and a vent hole 2.7 arranged inside the gas pump piston 2.2. During the suction stroke, as the gas pump piston 2.2 rises, the pressure inside the gas pump cylinder 2.1 drops, and the external air pushes the elastic sealing sheet 2.5 open through the vent hole 2.7 to achieve air intake; during the spray stroke, as the gas pump piston 2.2 is pressed downward, the pressure inside the gas pump cylinder 2.1 rises, pressurizing the elastic sealing sheet 2.5 and making it close to the vent hole 2.7 to form a seal and establish the pumping pressure.
[0036] The spray assembly comprises a spray head 3 and a spray sheet 3.8, and is used to spray liquid, gas, or a gas-liquid mixture.
[0037] The channels include a liquid channel 8, a gas channel 9, and a gas-liquid mixed flow channel (including a diffusion section 6.9 and subsequent flow channels); The channel is provided with a gas-liquid mixing unit, where the liquid pumped out by the liquid pump and the gas pumped out by the gas pump are mixed and flow to the spray assembly before being sprayed out.
[0038] In this embodiment, the liquid pump piston rod 1.3 and the gas pump piston rod 2.3 are combined into a sleeve, the central tube circulates liquid, and the sleeve interlayer circulates gas. The gas-liquid mixing unit is arranged at the end of the sleeve, and a variable cross-section airflow channel is formed by the outer wall of the sleeve. Along the airflow direction, the diameter of the airflow channel changes from large to small to form a contraction section 6.7, and then changes from small to large to form a diffusion section 6.9. The section with the smallest diameter between the contraction section and the diffusion section forms a throat section 6.5; the throat section 6.5 of the variable cross-section airflow channel is provided with a liquid outlet 8.3.
[0039] The working principle of this embodiment is that the gas is pumped out by the gas pump, passes through the gas channel to the contraction section 6.7, the gas channel diameter gradually decreases, and reaches the minimum when it reaches the throat section 6.5, at which time the gas flow rate increases significantly and the pressure decreases; at the same time, the liquid pumped out by the liquid pump passes through the liquid channel 8, flows to the liquid outlet 8.3, mixes into the gas, and the gas-liquid mixture flows to the diffusion section 6.9 and continues to flow to the spray head. Since the density of the gas-liquid mixture is greatly reduced relative to the liquid density, according to Bernoulli's law and the continuity equation, the flow rate of the gas-liquid mixture reaching the spray chamber set in the spray head will be significantly increased, and the turbulence intensity will also be greatly increased. The gas-liquid mixture will be sprayed out from the nozzle of the spray sheet at a higher flow rate, thereby obtaining a more optimized atomization effect.
[0040] See also Figure 5-7 , Specific embodiment 3, an optimized spray device, including a pump body assembly, a spray assembly, and a channel.
[0041] The pump body assembly has two groups, one group is used to pump out liquid, consisting of a liquid pump cylinder 1.1, a liquid pump piston 1.2, a liquid pump piston rod 1.3, and a one-way valve; the other group is used to pump out gas, consisting of a gas pump cylinder 2.1, a gas pump piston 2.2, a gas pump piston rod 2.3, and a one-way valve.
[0042] In this embodiment, the two groups of pump body components are arranged on different axes, the liquid pump is arranged on one side close to the spray plate, and the gas pump is arranged on the other side.
[0043] The one-way valve has a portion for air intake, which is composed of an elastic sealing sheet 2.5 and a vent hole 2.7 arranged on the inner side of the gas pump piston 2.2. During the suction stroke, as the gas pump piston 2.2 rises, the pressure in the gas pump cylinder 2.1 decreases, and the external air pushes the elastic sealing sheet 2.5 open through the vent hole 2.7 to achieve air intake; during the spray stroke, as the gas pump piston 2.2 is pressed downward, the pressure in the gas pump cylinder 2.1 increases, so that the elastic sealing sheet 2.5 is compressed and close to the vent hole 2.7, forming a seal and establishing the pump-out pressure.
[0044] The spray assembly comprises a spray head 3 and a spray sheet 3.8, and is used to spray liquid, gas, or a gas-liquid mixture.
[0045] The channels include a liquid channel 8, a gas channel 9, and a gas-liquid mixed flow channel (including a diffusion section 6.9 and subsequent flow channels); In this embodiment, the liquid channel 8 and the gas channel 9 are independent of each other, and the gas-liquid mixing unit is arranged at the intersection of the liquid channel 8 and the gas channel 9. The liquid pumped out by the liquid pump and the gas pumped out by the gas pump are mixed here and flow to the spray assembly before being sprayed out.
[0046] The gas-liquid mixing unit comprises a variable cross-section airflow channel. Along the airflow direction, the diameter of the airflow channel changes from large to small to form a contraction section 6.7, and then changes from small to large to form a diffusion section 6.9. The section with the smallest diameter between the contraction section and the diffusion section forms a throat section 6.5. The throat section 6.5 of the variable cross-section airflow channel is provided with a liquid outlet 8.3 of the liquid channel.
[0047] The cone angle α of the contraction section of the variable cross-section airflow channel of this embodiment is greater than the cone angle β of the diffusion section, and the diameter of the throat section is less than half of the major diameter D of the diffusion section.
[0048] The working principle of this embodiment is that the gas is pumped out by the gas pump, passes through the gas channel to the contraction section 6.7, the gas channel diameter gradually decreases, and reaches the minimum when it reaches the throat section 6.5, at which time the gas velocity increases significantly and the pressure decreases; at the same time, the liquid pumped out by the liquid pump passes through the liquid channel 8, flows to the liquid outlet 8.3, mixes into the gas, and the gas-liquid mixture flows to the diffusion section 6.9 and continues to flow to the spray head. Since the density of the gas-liquid mixture is greatly reduced relative to the density of the liquid, according to Bernoulli's law and the continuity equation, the flow rate of the gas-liquid mixture reaching the spray chamber set in the spray head will be significantly increased, and the turbulence intensity will also be greatly increased. The gas-liquid mixture will be sprayed out from the nozzle of the spray sheet at a higher flow rate, thereby obtaining a more optimized atomization effect.
[0049] In summary, we can see from several embodiments that as long as the pumping function is introduced into the pump body assembly to generate high-speed gas flow, and then the principles of fluid mechanics are properly used to design a scientific gas-liquid mixing unit so that the liquid is properly mixed into the air flow and enters the spray chamber, a higher-speed gas-liquid two-phase flow can be obtained, a stronger turbulence effect can be generated, and the sprayed liquid mist can be finer, resulting in a better atomization effect. The design of the check valve and the single pump can simplify the structure of the optimized spray device and effectively reduce costs; while the design of the double pump body assembly can make the sprayed gas-liquid mixture more uniform and the spray effect more stable.
[0050] The above are only optional implementation modes of the present invention. It should be pointed out that, for ordinary technicians in this technical field, without making any creative work, it is also possible to use the principles of the present invention as a premise, combine the various technical features of the present invention, design more technical solutions or make several improvements and modifications. All other embodiments thus obtained should be regarded as the protection scope of the present invention.
Claims
1. An optimized spraying method, characterized in that: The following steps are involved: Introduce a pumping function into the pump body to suck in gas; The gas is pressurized so that it flows through the gas-liquid mixing unit and mixes with the liquid; The gas-liquid mixture flows to the spray plate and sprays out a mist of liquid.
2. An optimized spraying method according to claim 1, characterized in that: The following steps are also included: The liquid is sucked in by the pump body; Pump out the liquid and make it flow to the gas-liquid mixing unit.
3. An optimized spray device, characterized in that: include: A pump assembly, comprising a cylinder, a piston, a piston rod, and a one-way valve, wherein at least one group of the pump assembly is provided with a pumping function; A spray assembly, including a spray head and a spray sheet, for spraying liquid, gas, or a gas-liquid mixture; Channels, including liquid channels, gas channels, and gas-liquid mixed flow channels; The channel is provided with a gas-liquid mixing unit, where the liquid flowing out of the liquid channel and the gas flowing out of the gas channel are mixed and flow to the spray assembly before being sprayed out.
4. An optimized spray device according to claim 3, characterized in that: At least one of the one-way valves is composed of an elastic sealing sheet and a vent hole arranged inside the gas pump piston.
5. An optimized spray device according to claim 3, characterized in that: The gas-liquid mixing unit includes at least one variable-section airflow channel. Along the airflow direction, the diameter of the airflow channel changes from large to small to form a contraction section, and then changes from small to large to form a diffusion section. The section with the smallest diameter between the contraction section and the diffusion section forms the throat section; a liquid outlet of the liquid channel is provided at a position close to the throat section of the throat section or the diffusion section of the variable-section airflow channel.
6. An optimized spray device according to claim 5, characterized in that: The cone angle of the contraction section of the variable cross-section airflow channel is greater than the cone angle of the diffusion section, and the diameter of the throat section is less than half of the major diameter of the diffusion section.
7. An optimized spray device according to claim 6, characterized in that: The liquid channel is provided with a check valve.
8. An optimized spray device according to any one of claims 3 to 6, characterized in that: The pump body components are divided into two groups, one group is used for pumping out liquid, and the other group is used for pumping out gas.
9. An optimized spray device according to claim 8, characterized in that: The two groups of pump body components are coaxial, the liquid pump piston rod and the gas pump piston rod are combined into a sleeve, a central tube flows through a fluid medium, and another fluid medium flows through the sleeve interlayer.
10. An optimized spray device according to claim 9, characterized in that: The two groups of pump body components, the upper pump is a gas pump, the lower pump is a liquid pump, the casing and the central tube flow liquid, and the casing interlayer flows gas.
11. An optimized spray device according to claim 8, characterized in that: The two groups of pump body components are not coaxial, the liquid channel and the gas channel are independently arranged, and the two are merged in the gas-liquid mixing unit.