Spraying pump and spraying system

Abstract

The invention provides an atomizing pump and an atomizing system. The spraying pump is mounted on a container of the spraying system; the spraying pump comprises a spraying device for outputting materials, and the spraying device comprises a material output channel communicated with the inner cavity of the container and a material release structure selectively communicated with the material output channel; the gas pressurizing device is used for increasing the gas pressure in the container; the gas supercharging device comprises a resettable movable part and a fixed part, and a pressure cavity is defined between the fixed part and the movable part; the pressure cavity is provided with a valve device, and when the pressure cavity is compressed by the movable part, the valve device allows gas in the pressure cavity to enter an inner cavity of the container, so that gas pressure in the container is increased; when the pressure cavity is reset due to the movement of the movable part, the valve device allows gas outside the pressure cavity to enter the pressure cavity; the gas supercharging device and the spraying device are coaxially arranged, the gas supercharging device provides a hollow channel, and the hollow channel communicates with the material output channel and the material release structure. The atomizing pump is simple in structure.

Description

Technical Field

[0001] The present invention relates to the technical field of spray pumps, and particularly to a spray pump and a spray system. Background Art

[0002] With the continuous expansion of the uses of packaging containers with spray functions, they have good application prospects in the fields of pharmaceuticals, cosmetics, food, and agriculture. Among them, aerosols are a common type. An aerosol refers to a liquid, suspension, or emulsion made by filling a material and a propellant into a pressure-resistant sealed container with a special valve system. When in use, the material is ejected in the form of mist particles by the pressure of the propellant. An aerosol device includes a container and an aerosol filled in the container.

[0003] Conventional propellants of aerosol devices include liquefied gases and compressed gases. Liquefied gases have certain chemical properties and flammability, and compressed gases have certain dangers. This results in limitations in the use and transportation of aerosol devices and relatively high costs. Summary of the Invention

[0004] The purpose of the present invention is to provide a spray pump to replace the propellant in a conventional aerosol device, and the structure is simple, and it can achieve inflation and pressurization of the material in a limited space.

[0005] One aspect of the present invention provides a spray pump installed on a container of a spray system; the spray pump includes a spray device for outputting the material, the spray device includes a material output channel communicating with the inner cavity of the container, and a material release structure selectively communicating with the material output channel; the spray pump further includes a gas pressurizing device for increasing the air pressure in the container; the gas pressurizing device includes a resetable movable part and a fixed part, and a pressure chamber is enclosed between the fixed part and the movable part; the pressure chamber is provided with a valve device, and when compressed by the movable part, the valve device allows the gas in the pressure chamber to enter the inner cavity of the container, thereby increasing the air pressure in the container; when the pressure chamber is reset by the movement of the movable part, the valve device allows the gas outside the pressure chamber to enter the pressure chamber; wherein, the gas pressurizing device and the spray device are coaxially arranged, and the gas pressurizing device provides a hollow channel, and the hollow channel communicates the material output channel and the material release structure.

[0006] In an embodiment, the material release structure can move between a lower position and a higher position, and the lower position is lower than the higher position; the material release structure at the lower position can be pushed out to the higher position by the pressurization in the container, so that the position change of the material release structure has an indication function of indicating that the spray pump can start spraying.

[0007] In one embodiment, the material release structure includes a resetable spray head, a release valve, and a main column with one end connected to the spray head and the other end connected to the release valve. The spray head is provided with a nozzle for outputting the material to the outside of the spray head. The main column is provided with a material release channel communicating with the output port, and the material release channel of the main column and the material output channel are selectively communicated; the release valve is configured to: when the spray head is pressed down, the release valve communicates the material release channel and the material output channel; when the spray head is reset, the release valve shuts off the material release channel and the material output channel.

[0008] In one embodiment, the release valve includes a valve body and a valve seat. The valve body is located in the hollow channel and is in contact and cooperation with the inner wall surface of the hollow channel. The valve body also sleeves on the main column. The valve seat is fixedly arranged at the lower end of the main column. The main column includes a valve hole. The main column is in sliding cooperation with the valve body and can move relative to the valve body to a first position or a second position; at the first position, the valve body closes the valve hole to shut off the material release channel and the material output channel; at the second position, the valve hole disengages from the valve body to communicate the material release channel and the material output channel.

[0009] In one embodiment, the valve hole is a throttle hole penetrating the material release channel and the outside of the main column.

[0010] In one embodiment, the valve body is a piston, and the inner wall surface of the hollow channel provides a piston bottom dead center; at the lower position of the material release structure, the piston moves to the piston bottom dead center.

[0011] In one embodiment, the inner wall surface of the hollow channel also provides a piston top dead center. At the higher position of the material release structure, the piston can move between the piston top dead center and the piston bottom dead center.

[0012] In one embodiment, the outer peripheral wall of the piston and the inner wall surface of the hollow channel are in frictional cooperation so that the piston relative to the pressing down of the spray head remains unchanged when the spray pump can start spraying.

[0013] In one embodiment, the material release structure further includes a first elastic member. The first elastic member acts on the moving assembly formed by the main column, the valve seat, and the spray head to apply a reset elastic force based on the valve body.

[0014] In one embodiment, the valve device includes a valve mechanism, an air inlet passage, and an air outlet passage. The valve mechanism includes a first valve and a second valve. The first valve is configured to open only when the movable part is pressed down, allowing the gas in the pressure chamber to enter the inner cavity of the container from the air outlet passage. The second valve is configured to open only when the movable part is reset, allowing gas to enter the pressure chamber from the outside of the pressure chamber through the air inlet passage.

[0015] In one embodiment, the first valve includes an elastic outer vane. The outer vane is disposed outside the pressure chamber and corresponds to the air outlet of the air outlet passage. The outer vane opens the air outlet when the air pressure in the pressure chamber is greater than the air pressure in the air outlet passage, and closes the air outlet when the air pressure in the pressure chamber is less than the air pressure in the air outlet passage.

[0016] In one embodiment, the second valve includes an elastic inner vane. The inner vane is disposed inside the pressure chamber and corresponds to the air inlet of the air inlet passage. The inner vane opens the air inlet when the air pressure in the pressure chamber is less than the external air pressure, and closes the air inlet when the air pressure in the pressure chamber is greater than the external air pressure.

[0017] In one embodiment, the fixed part includes a cylinder. The cylinder includes a circumferential outer wall and a bottom wall. The bottom wall has a protruding cylindrical portion. The movable part includes a top wall and a circumferential inner wall. The top wall has a protruding tubular portion. The outer peripheral edge of the top wall is in sealed and sliding contact with the inner wall surface of the circumferential outer wall. The lower end of the circumferential inner wall is in sealed and sliding contact with the inner wall surface of the cylindrical portion. The circumferential outer wall, the bottom wall, the top wall, and the circumferential inner wall enclose the pressure chamber. The tubular portion provides the hollow channel.

[0018] In one embodiment, the top wall and the inner side wall of the enclosure are separately formed and assembled together. The valve mechanism includes an annular portion, a first valve located on the inner peripheral side of the annular portion, and a second valve located on the outer peripheral side of the annular portion. The first valve includes an elastic outer blade, which is arranged outside the pressure chamber and corresponds to the air outlet communicating with the air outlet channel. The outer blade opens the air outlet when the air pressure in the pressure chamber is greater than the air pressure in the air outlet channel, and closes the air outlet when the air pressure in the pressure chamber is less than the air pressure in the air outlet channel. The second valve includes an elastic inner blade, which is arranged inside the pressure chamber and corresponds to the air inlet communicating with the air inlet channel. The inner blade opens the air inlet when the air pressure in the pressure chamber is less than the external air pressure, and closes the air inlet when the air pressure in the pressure chamber is greater than the external air pressure. An outer flange is provided on the outer peripheral wall of the inner side wall of the enclosure, and an air outlet hole is provided on the outer flange. The top wall is provided with an annular clamping groove, the annular portion is installed in the annular clamping groove, and the lower end is in sealing contact with the outer flange, so that the outer blade is isolated outside the pressure chamber.

[0019] In one embodiment, the top wall and the inner side wall of the enclosure are separately formed and assembled together. The valve mechanism includes an annular portion and a second valve located on the outer peripheral side of the annular portion. The second valve includes an elastic inner blade, which is arranged inside the pressure chamber and corresponds to the air inlet communicating with the air inlet channel. The inner blade opens the air inlet when the air pressure in the pressure chamber is less than the external air pressure, and closes the air inlet when the air pressure in the pressure chamber is greater than the external air pressure. An outer flange is provided on the outer peripheral wall of the inner side wall of the enclosure, and an air outlet is provided on the outer flange. The top wall is provided with an annular clamping groove, the annular portion is installed in the annular clamping groove, and the lower end is in sealing contact with the outer flange. The lower port of the inner side wall of the enclosure is provided with an elastic outward expanding structure, and the outward expanding structure is the first valve. The gap between the outward expanding structure and the inner wall of the cylindrical portion selectively forms an air outlet corresponding to the air outlet channel. The outward expanding structure opens the air outlet by contracting when the air pressure in the pressure chamber is greater than the air pressure in the air outlet channel, and expands the air outlet when the air pressure in the pressure chamber is less than the air pressure in the air outlet channel.

[0020] In one embodiment, the fixed part further includes a cover body, the cover body and the air cylinder are fixedly assembled, and the cover body has a neck surrounding the tubular portion. The movable part includes a pressing head. The pressing head has an outer cylinder and an inner cylinder. The outer cylinder is movably arranged on the outer periphery of the neck, and the inner cylinder is fixedly assembled with the tubular portion on the outer periphery of the tubular portion and jointly provides the hollow channel.

[0021] In one embodiment, the gas pressurizing device further includes a second elastic member extending in an annular groove between the neck portion and the inner cylinder. One end of the second elastic member acts on the cover body, and the other end acts on the pressurizing button head, for providing a restoring elastic force to the pressurizing button head and the movable part.

[0022] Another aspect of the present invention provides a spray system, including a container, characterized in that it further includes the spray pump according to any one of the above, the spray pump is arranged on the container, and the material output channel of the spray pump communicates with the inner cavity of the container.

[0023] The spray pump of the present invention uses a gas pressurizing device to replace the propellant in a conventional aerosol device. While realizing the spray function, it can inflate the container by pressing the movable part to change the volume of the pressure chamber, and can achieve instant inflation and instant use without pre-filling gas; the user can continuously and quantitatively spray by pressing the spray device, and the user experience is better; and, compared with the separate design in which the gas pressurizing device and the spray device are independent of each other, the spray pump of the present invention arranges the gas pressurizing device and the spray device on the same axis, and can realize the inflation and pressurization of the material in a limited space without changing the original structure and volume of the container, with a simple structure, optimized space utilization, a relatively small overall volume of the spray pump, and a wide range of application fields. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The above and other features, properties and advantages of the present invention will become more obvious through the following description in conjunction with the drawings and embodiments, where:

[0025] Figure 1 is a schematic diagram of an embodiment of a spray pump according to the present invention;

[0026] Figure 2 is an exploded view of an embodiment of a spray pump according to the present invention;

[0027] Figure 3 is Figure 2 a cross-sectional view of the spray pump shown;

[0028] Figure 4 is a top view of an embodiment of a spray pump according to the present invention;

[0029] Figure 5a is Figure 2 a rear view of the material release structure of the spray pump shown at a lower position;

[0030] Figure 5b is Figure 2 a rear view of the material release structure of the spray pump shown at a higher position;

[0031] Figure 5c isFigure 2 Front view of the material release structure of the spray pump shown at a lower position;

[0032] Figure 5d is Figure 2 Front view of the material release structure of the spray pump shown at a higher position;

[0033] Figure 5e is Figure 2 Side view of the material release structure of the spray pump shown at a higher position;

[0034] Figure 6 is Figure 2 Schematic diagram of the main column of the spray pump shown;

[0035] Figure 7 is Figure 2 Schematic diagram of the piston of the spray pump shown;

[0036] Figure 8 is Figure 2 Schematic diagram of the valve seat of the spray pump shown;

[0037] Figure 9 is Figure 2 Schematic diagram of the top wall of the spray pump shown;

[0038] Figure 10 is Figure 2 Schematic diagram of the inner side wall of the enclosure of the spray pump shown;

[0039] Figure 11 is Figure 2 Schematic diagram of the valve mechanism of the spray pump shown;

[0040] Figure 12 is Figure 3 Schematic diagram of the air inlet channel and the air outlet channel of the spray pump shown. Detailed implementation manners

[0041] Now, reference will be made in detail to the embodiments of the present invention, one or more examples of which are shown in the accompanying drawings. Each example is provided to explain the present invention, not to limit the present invention. In fact, it will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the scope or spirit of the present invention. For example, features shown or described as part of one embodiment can be used with another embodiment to yield yet another embodiment. Accordingly, the present invention is intended to cover these modifications and variations that fall within the scope of the appended claims and their equivalents.

[0042] As used herein, the terms "first" and "second" are used to distinguish one component from another, or one position from another position, and are not intended to indicate the importance of the respective components. AsFigure 3 As indicated by the coordinates, the terms "upper" and "lower" represent the orientation relationship when the spray pump is assembled to the container of the spray system. The terms "higher position" and "lower position" are the positions of the top of the material release structure relative to the top of the movable part, and the "higher position" is located above the "lower position".

[0043] Figure 1 The spray pump 10 of the spray system is shown. The spray system is used to contain materials in a container and form a liquid, suspension or emulsion, and the materials are sprayed in the form of mist particles by the pressure of the propellant during use. The spray system includes a container (not shown) and a spray pump 10. The spray pump 10 is arranged on the container not shown in the figure, and the inner cavity 20 of the spray pump 10 is communicated with the container to achieve the spraying effect. The above-mentioned "materials" include but are not limited to liquids, solids and solid-liquid mixtures, and the states of the materials sprayed by the spray system include but are not limited to mist, foam, droplet and solid states.

[0044] Figure 2 and Figure 3 The spray pump 10 of an embodiment of the present invention is shown. The spray pump 10 is installed on the container of the spray system. The spray pump 10 includes a spray device 100 for outputting materials, and the spray device 100 includes a material output channel 110 communicated with the inner cavity 20 of the container and a material release structure 120 selectively communicated with the material output channel 110. The spray pump 10 further includes a gas pressurizing device 200 for increasing the air pressure in the container. The gas pressurizing device 200 includes a movable part that can be reset and a fixed part 220. A pressure chamber 230 is defined between the fixed part 220 and the movable part; the pressure chamber 230 is configured with a valve device, and when the pressure chamber 230 is compressed by the movable part, the valve device allows the gas in the pressure chamber 230 to enter the inner cavity 20 of the container, thereby increasing the air pressure in the container. When the pressure chamber 230 is reset due to the movement of the movable part, the valve device allows the gas outside the pressure chamber 230 to enter the pressure chamber 230. Among them, the gas pressurizing device 200 and the spray device 100 are arranged coaxially, and the gas pressurizing device 200 provides a hollow channel 211, and the hollow channel 211 communicates the material output channel 110 and the material release structure 120. Refer to Figure 3 , the gas pressurizing device 200 is hollow and sleeved outside a part of the material output channel 110, and the axis of the hollow channel 211 is the same as the axis of the material output channel 110.

[0045] By arranging the gas pressurizing device 200 and the spray device 100 on the same axis in the spray pump 10 of an embodiment of the present invention, compared with the separate design in which the gas pressurizing device 200 and the spray device 100 are independent of each other, the spray pump 10 of the present invention can simplify the structure of the spray pump 10 and optimize the space utilization while ensuring the realization of the above-mentioned spraying function. In this way, the overall volume of the spray pump 10 is small, the application field can be expanded, and the user experience can be improved.

[0046] By pressing the gas pressurizing device 200 of the spray pump 10, the user can inflate the container of the spray system to achieve instant inflation and instant use. By pressing the spray device 100, the user can continuously spray a fixed amount of material, which can solve the inconvenience caused by non - continuous spraying to the user, and the fixed amount of the sprayed material is convenient for the user to determine the number of times of pressing at intervals according to needs.

[0047] In terms of production and transportation, the spray pump 10 of an embodiment of the present invention does not need to be filled with gas. Compared with the conventional aerosol container filled with propellants, it can enhance safety, so that the applicable population can be expanded, and the elderly and children can also use it alone. And without filling gas, the filling requirements can be reduced, the manufacturing process can be simplified, and the production cost can be reduced.

[0048] For conventional aerosols, due to the pressurized propellants injected inside, the requirements for the pressure resistance of the container are relatively high. Usually, the materials of the pressure - resistant containers include glass and metal. Since the spray pump 10 of an embodiment of the present invention does not need to be filled with gas, the requirements for the pressure - resistant performance of the container are relatively low, and it can be manufactured by an injection - molding process, which has good economy. Without pre - factory pressure filling, the spray pump 10 of an embodiment of the present invention can be replaced at any time. It can be replaced when the original spray pump 10 is damaged or there are other needs, while the container and the material are inconvenient, practicing the concept of environmental protection and green.

[0049] Figure 4 The top view of the spray pump 10 of an embodiment of the present invention is shown. Figures 5a to 5e The different use states of the spray pump 10 of an embodiment of the present invention are shown. In some embodiments, the material release structure 120 can move between a lower position A and a higher position B. The lower position A is lower than the higher position B. The material release structure 120 at the lower position A can be pushed out to the higher position B by the pressurization in the container, and thus the position change of the material release structure 120 has an indication function indicating that the spray pump 10 can be started for spraying.

[0050] When the user first uses the spray pump 10, or when the pressure in the container is less than the external pressure, the material release structure 120 is at the lower position A. As Figure 5a and Figure 5c shown, the top end of the material release structure 120 is lower than the top end of the movable part, and the lower end of the nozzle 122 of the material release structure 120 contacts the inner wall surface of the U - shaped groove 217d of the pressurizing button 217 of the gas pressurizing device 200. The user cannot press down the material release structure 120, and thus cannot spray the material. At this time, the user can know that the current spray pump 10 cannot be started normally through the material release structure 120 being at the lower position A. When the gas pressurizing device 200 is pressed down and the pressure in the inner cavity 20 of the container reaches a certain pressure value, the material release structure 120 is pushed up by a larger air pressure, as Figure 5b, Figure 5d and Figure 5e As shown, it moves from the lower position A to the higher position B. At this time, the material release structure 120 is allowed to be pressed downward, and the user can know from the change of the position that the current spray pump 10 can be started normally. During use, when the pressure in the container decreases and the material release structure 120 is again at the lower position A, the spraying stops. At this time, the user can use the spray pump 10 normally again by inflating the movable part. The spray pump 10 of this embodiment can clearly and intuitively indicate the working state of the spraying device 100, avoiding misoperation by the user.

[0051] Figure 6 Fig. shows the main column 124 of the spray pump 10 according to an embodiment of the present invention. In some embodiments, the material release structure 120 includes a resetable spray head 121, a release valve 123, and a main column 124. One end of the main column 124 is connected to the spray head 121 and the other end is connected to the release valve 123. The spray head 121 is provided with a nozzle 122 for outputting the material to the outside of the spray head 121. The main column 124 is provided with a material release channel 124a communicating with the output port, and the material release channel 124a of the main column 124 and the material output channel 110 are selectively communicated. Among them, the release valve 123 is configured to: when the spray head 121 is pressed downward, the release valve 123 connects the material release channel 124a and the material output channel 110; when the spray head 121 is reset, the release valve 123 shuts off the material release channel 124a and the material output channel 110. The release valve 123 can enable the material to have a channel for spraying from the nozzle 122 when the spray head 121 is pressed downward, and prevent the material from spraying when the spray head 121 is reset, ensuring that the material release structure 120 can normally switch the working state and improving the reliability of the spray pump 10.

[0052] In some embodiments, the release valve 123 includes a valve body and a valve seat 123b. The valve body is located in the hollow channel 211 and is in contact and cooperation with the inner wall surface of the hollow channel 211. The valve body also sleeves on the main column 124. The valve seat 123b is fixedly arranged at the lower end of the main column 124. The main column 124 includes a valve hole 124b. The main column 124 is in sliding cooperation with the valve body and can move relative to the valve body to the first position C or the second position (not shown). At the first position C, the valve body closes the valve hole 124b to shut off the material release channel 124a and the material output channel 110; at the second position, the valve hole 124b is disengaged from the valve body to connect the material release channel 124a and the material output channel 110. In one embodiment, the valve body is set as a piston 123a. The first position C and the second position are the positions of the lower end of the main column 124 relative to the valve body. The first position C is as Figure 3As shown, when the main column 124 is in the first position C, the valve body completely covers the valve hole 124b, and the material cannot enter the material release channel 124a from the material output channel 110. The second position is not shown in the figure. The second position is lower than the first position C, that is, Figure 3 below the first position C shown. During the process of the main column 124 being pressed down by the spray head 121, the valve hole 124b also moves downward accordingly; when the main column 124 is in the second position, at least part of the valve hole 124b is exposed, and the material can enter the material release channel 124a from the material output channel 110.

[0053] In some embodiments, the valve hole 124b is a throttle hole that penetrates the outside of the material release channel 124a and the main column 124 to limit the flow rate of the material entering the nozzle 122 from the material release channel 124a, which is beneficial to the continuous ejection of the material. As Figure 6 shown, there may be two throttle holes, and they are symmetrically arranged in the circumferential direction of the main column 124. The aperture of the throttle hole can be determined according to the material form. For example, the aperture of the throttle hole corresponding to solid materials can be larger than that corresponding to powder materials and liquid materials.

[0054] In some embodiments, the inner wall surface of the hollow channel 211 provides a piston bottom dead center 212, as Figure 3 shown. At the lower position A of the material release structure 120, the piston 123a moves to the piston bottom dead center 212. During the process of the piston 123a moving to the piston bottom dead center 212, the valve seat 123b together with the main column 124 is pushed downward by the piston 123a; when the piston 123a moves to the piston bottom dead center 212, the material release structure 120 is at the lower position A to achieve the function of indicating that the material release structure 120 cannot eject the material.

[0055] Continuing to refer to Figure 3 , in some embodiments, the inner wall surface of the hollow channel 211 also provides a piston top dead center 213. At the higher position B of the material release structure 120, the piston 123a can move from the piston top dead center 213 to the piston bottom dead center 212. The movement stroke of the piston 123a is the distance between the piston top dead center 213 and the piston bottom dead center 212. The piston top dead center 213 can prevent the material release structure 120 from being ejected too far or even separated due to excessive pressure in the container. In one embodiment, the piston top dead center 213 is a snap ring protruding from the circumferential direction of the top end surface of the pressurizing head 217 towards its axis. In another embodiment, the piston top dead center 213 is an annular protrusion on the inner wall surface of the pressurizing head 217 in contact with the spray head 121, and an annular groove corresponding to the annular protrusion is provided on the outer wall surface of the spray head 121, which can also achieve the above effects.

[0056] Figure 7The valve body of the spray pump 10 according to an embodiment of the present invention is shown. In some embodiments, the outer peripheral wall 123a-1 of the piston 123a and the inner wall surface of the hollow channel 211 are in frictional fit. The movable part of the hollow channel 211 includes a pressing head 217. As Figure 3 shown, that is, the outer peripheral wall 123a-1 of the piston 123a and the inner wall surface of the pressing head 217 are in frictional fit, so that the downward pressure of the piston 123a relative to the spray head 121 when the spray pump 10 is turned on for spraying remains unchanged, so as to ensure that the valve hole 124b can smoothly disengage from the valve body. Under the condition that the frictional force between the piston 123a and the main column 124 during sliding fit is less than the sum of the frictional force between the piston 123a and the pressing head 217 and the force generated by the upward pressure of the air pressure in the container, the position of the piston 123a relative to the downward pressure of the spray head 121 can remain unchanged. On the contrary, pressing down the spray head 121 will drive the piston 123a to move downward together. From Figure 3 it can be obtained that even if pressing down the spray head 121 will drive the piston 123a to move downward together, the piston 123a cannot continue to move downward after moving to the lower dead center 212 of the piston. The frictional fit with the inner wall surface of the hollow channel 211 can be achieved by increasing the diameter of the outer periphery of the piston 123a.

[0057] As Figure 7 shown, the piston 123a further includes a lower end portion 123a-2, and the lower end portion 123a-2 can be in sealed and sliding contact with the inner wall surface of the movable part, ensuring that the material is always in the material output channel 110.

[0058] Figure 8 The valve seat 123b of the spray pump 10 according to an embodiment of the present invention is shown. As Figure 8 shown, the middle part of the valve seat 123b is concave to accommodate the lower end of the main column 124. The valve seat 123b is provided with a plurality of protruding portions 123b-1 in the circumferential direction. When the main column 124 is in the first position C, the piston 123a contacts the valve seat 123b, and the piston 123a pushes the valve seat 123b to move; when the main column 124 is in the second position, the valve seat 123b and the piston 123a are disengaged.

[0059] In some embodiments, the material release structure 120 further includes a first elastic member 125. The first elastic member 125 acts on the moving assembly formed by the main column 124, the valve seat 123b, and the spray head 121 based on the valve body to apply a reset elastic force, so as to realize the function of continuously pressing the spray head 121 multiple times. The first elastic member 125 can be a spring or other elastic materials, such as rubber.

[0060] In some embodiments, the valve device includes a valve mechanism 240, an intake passage, and an outlet passage. The valve mechanism 240 includes a first valve and a second valve. The first valve is configured to open only when the movable part is pressed down, allowing the gas in the pressure chamber 230 to enter the inner cavity 20 of the container from the outlet passage. The second valve is configured to open only when the movable part is reset, allowing gas to enter the pressure chamber 230 from the outside of the pressure chamber 230 through the intake passage. The intake passage only allows the outside gas to enter the pressure chamber 230; the outlet passage only allows the gas in the pressure chamber 230 to enter the container, and the material in the container cannot enter the pressure chamber 230.

[0061] In some embodiments, the first valve includes an elastic outer vane 241 disposed outside the pressure chamber 230 and corresponding to the outlet 214 communicating with the outlet passage. The outer vane 241 opens the outlet 214 when the air pressure in the pressure chamber 230 is greater than the air pressure in the outlet passage, and closes the outlet 214 when the air pressure in the pressure chamber 230 is less than the air pressure in the outlet passage. The elastic outer vane 241 can open when the volume of the pressure chamber 230 is compressed to a certain air pressure value, connecting the pressure chamber 230 and the outlet passage. When the air pressure in the pressure chamber 230 is greater than the air pressure in the outlet passage, the gas in the pressure chamber 230 will enter the outlet passage. The structure of the first valve is simple and the response is fast with such a setting.

[0062] In some embodiments, the second valve includes an elastic inner vane 242 disposed inside the pressure chamber 230 and corresponding to the inlet 215 communicating with the intake passage. The inner vane 242 opens the inlet 215 when the air pressure in the pressure chamber 230 is less than the outside air pressure, and closes the inlet 215 when the air pressure in the pressure chamber 230 is greater than the outside air pressure. The elastic inner vane 242 can open when the volume of the pressure chamber 230 expands to a certain air pressure value, connecting the pressure chamber 230 and the outside of the spray pump 10. When the air pressure in the pressure chamber 230 is less than the outside air pressure, the outside gas will enter the pressure chamber 230. The structure of the second valve is simple and the response is fast with such a setting.

[0063] Figure 9 The top wall 216 of the spray pump 10 according to an embodiment of the present invention is shown. Figure 10The inner circumferential wall 218 of the spray pump 10 according to an embodiment of the present invention is shown. In some embodiments, the fixed part 220 includes a cylinder 221, and the cylinder 221 includes an outer circumferential wall 222 and a bottom wall 223. The bottom wall 223 has a protruding cylindrical portion 223a. The movable part includes a top wall 216 and an inner circumferential wall 218. The top wall 216 has a protruding tubular portion 216a. The outer peripheral edge 216c of the top wall 216 is in sealed and sliding contact with the inner wall surface of the outer circumferential wall 222. The lower end of the inner circumferential wall 218 is in sealed and sliding contact with the inner wall surface of the cylindrical portion 223a. The outer circumferential wall 222, the bottom wall 223, the top wall 216, and the inner circumferential wall 218 enclose a pressure chamber 230. The tubular portion 216a provides a hollow channel 211, and the material output channel 110 is sleeved inside the tubular portion 216a. As Figure 3 shown, the bottom end of the cylindrical portion 223a provides an air outlet through hole 223b, and the air outlet through hole 223b communicates with the air outlet channel. The gas in the pressure chamber 230 can enter the container through the air outlet 214, the air outlet channel, and the air outlet through hole 223b. The aperture of the air outlet through hole 223b is small to prevent the material in the container from entering the air outlet channel.

[0064] Figure 11 The valve mechanism 240 of the spray pump 10 according to an embodiment of the present invention is shown. In some embodiments, the top wall 216 and the inner circumferential wall 218 are integrally formed and assembled together. The integrally formed top wall 216 and inner circumferential wall 218 are convenient for production and actual assembly, and reduce production costs. As Figure 11 shown, the valve mechanism 240 includes an annular portion 243, a first valve, and a second valve. The first valve is located on the inner peripheral side of the annular portion 243, and the second valve is located on the outer peripheral side of the annular portion 243. The first valve includes an elastic outer blade 241. The outer blade 241 is disposed outside the pressure chamber 230 and corresponds to the air outlet 214 communicating with the air outlet channel. The outer blade 241 opens the air outlet 214 when the air pressure in the pressure chamber 230 is greater than the air pressure in the air outlet channel, and closes the air outlet 214 when the air pressure in the pressure chamber 230 is less than the air pressure in the air outlet channel. The second valve includes an elastic inner blade 242. The inner blade 242 is disposed inside the pressure chamber 230 and corresponds to the air inlet 215 communicating with the air inlet channel. The inner blade 242 opens the air inlet 215 when the air pressure in the pressure chamber 230 is less than the external air pressure, and closes the air inlet 215 when the air pressure in the pressure chamber 230 is greater than the external air pressure. An outer flange 218a is provided on the outer peripheral wall of the inner circumferential wall 218, and an air outlet hole 218b is provided on the outer flange 218a. The top wall 216 is provided with an annular card slot 216b. The annular portion 243 is installed in the annular card slot 216b, and the lower end is in sealed contact with the outer flange 218a, so that the outer blade 241 is isolated outside the pressure chamber 230. The valve mechanism 240 in this embodiment has a simple structure and can reduce costs compared with the separate arrangement of the first valve and the second valve.

[0065] In some other embodiments, the structure of the first valve is different from that of the previous embodiment. Only the first valve will be elaborated in detail below, and for the same parts, reference can be made to the description of the previous embodiment. As Figure 3 and Figure 10 shown, in this embodiment, the first valve of the spray pump 10 has an elastic outwardly expanding structure 218c at the lower port of the inner side wall 218 of the enclosure. The gap between the outwardly expanding structure 218c and the inner wall of the cylindrical portion 223a selectively forms an air outlet corresponding to the communication air outlet passage, that is, Figure 3 at 214a shown. When the air pressure in the pressure chamber 230 is greater than the air pressure in the air outlet passage, the outwardly expanding structure 218c opens the air outlet by contracting. When the air pressure in the pressure chamber 230 is less than the air pressure in the air outlet passage, the air outlet is tightly closed. The outwardly expanding structure 218c is elastic. When the air pressure in the pressure chamber 230 is greater than the air pressure in the air outlet passage, the outwardly expanding structure 218c in contact with the inner wall of the cylindrical portion 223a contracts in the axial direction under the pressure, so that a gap for gas to pass through is generated between the outwardly expanding structure 218c and the inner wall of the cylindrical portion 223a, forming an air outlet, and the gas in the pressure chamber 230 enters the air outlet passage through this gap.

[0066] In some embodiments, the fixing part 220 further includes a cover body 224, and the cover body 224 is fixedly assembled with the air cylinder 221. The cover body 224 has a neck portion 224a surrounding the tubular portion 216a, and the movable part includes a pressing head 217. The pressing head 217 has an outer cylinder 217a and an inner cylinder 217b. The outer cylinder 217a is movably arranged on the outer periphery of the neck portion 224a, and the inner cylinder 217b is fixedly assembled with the tubular portion 216a on the outer periphery of the tubular portion 216a and together provides a hollow channel 211. Figure 12 shows the air inlet passage and the air outlet passage of the spray pump 10 according to an embodiment of the present invention. The air inlet passage is as Figure 12 marked by the solid line arrow shown, and the air outlet passage is as Figure 12 shown by the dashed line arrow. When the air pressure in the pressure chamber 230 is less than the external air pressure, the external gas enters the annular groove 217c between the neck portion 224a and the inner cylinder 217b from the gap between the outer cylinder 217a of the pressing head 217 and the neck portion 224a, and then enters the pressure chamber 230 through the opened air inlet 215. When the air pressure in the pressure chamber 230 is greater than the air pressure in the air outlet passage, the gas in the pressure chamber 230 enters the air outlet passage through the opened air outlet hole 218b and the air outlet 214, and finally enters the inner cavity 20 of the container through the air outlet through hole 223b.

[0067] In some embodiments, the gas booster device 200 further includes a second elastic member 250 extending in an annular groove 217c between the neck portion 224a and the inner cylinder 217b. One end of the second elastic member 250 acts on the cover 224, and the other end acts on the pressing head 217, for providing a restoring elastic force to the pressing head 217 and the movable part, so as to realize the function of continuously pressing the pressing head 217 for multiple times. The second elastic member 250 can be a spring or other elastic materials, such as rubber.

[0068] In some embodiments, the spray pump 10 further includes a straw 260. The straw 260 is fixedly connected to the bottom wall 223 and communicates with the material output channel 110, facilitating the extraction of the material at the bottom of the inner cavity 20 of the container.

[0069] Although the present invention is disclosed above with preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make possible changes and modifications without departing from the spirit and scope of the present invention. Therefore, any modifications, equivalent changes and decorations made to the above embodiments based on the technical essence of the present invention without departing from the technical solution of the present invention all fall within the protection scope defined by the claims of the present invention.

Claims

1. A spray pump is installed on a container of a spray system; The spray pump includes a spraying device for outputting materials, and the spraying device includes a material output channel communicating with the inner cavity of the container and a material release structure selectively communicating with the material output channel; It is characterized in that, The spray pump further includes a gas pressurizing device for increasing the air pressure in the container; The gas pressurizing device includes a resetable movable part and a fixed part, and a pressure chamber is enclosed between the fixed part and the movable part; The pressure chamber is configured with a valve device, and when the pressure chamber is compressed by the movable part, the valve device allows the gas in the pressure chamber to enter the inner cavity of the container, thereby increasing the air pressure in the container; When the pressure chamber is reset due to the movement of the movable part, the valve device allows the gas outside the pressure chamber to enter the pressure chamber; Wherein, the gas pressurizing device and the spraying device are coaxially arranged, and the gas pressurizing device provides a hollow channel, and the hollow channel communicates the material output channel and the material release structure.

2. The spray pump according to claim 1, wherein The material release structure can move between a lower position and a higher position, and the lower position is lower than the higher position; The material release structure at the lower position can be pushed out to the higher position by the pressurization in the container, so that the position change of the material release structure has an indication function of indicating that the spray pump can be turned on for spraying.

3. The spray pump according to claim 2, characterized in that, The material release structure includes a resetable spray head, a release valve, and a main column with one end connected to the spray head and the other end connected to the release valve, The spray head is provided with a spray port for outputting materials to the outside of the spray head, The main column is provided with a material release channel communicating with the output port, The material release channel of the main column and the material output channel are selectively communicated; The release valve is configured as: When the spray head is pressed down, the release valve communicates the material release channel and the material output channel; When the spray head is reset, the release valve shuts off the material release channel and the material output channel.

4. The spray pump according to claim 3, wherein, The release valve includes a valve body and a valve seat, The valve body is located in the hollow channel and is in contact and cooperation with the inner wall surface of the hollow channel, The valve body also sleeves on the main column, The valve seat is fixedly arranged at the lower end of the main column, The main column includes a valve hole, and the main column is in sliding fit with the valve body and can move relative to the valve body to a first position or a second position; In the first position, the valve body closes the valve hole to shut off the material release channel and the material output channel; In the second position, the valve hole is disengaged from the valve body to communicate the material release channel and the material output channel.

5. The spray pump according to claim 4, wherein, The valve body is a piston, and the inner wall surface of the hollow channel provides a piston bottom dead center; In the lower position of the material release structure, the piston moves to the piston bottom dead center.

6. The spray pump according to claim 5, wherein, The inner wall surface of the hollow channel also provides a piston top dead center, In the higher position of the material release structure, the piston can move between the piston top dead center and the piston bottom dead center.

7. The spray pump according to claim 5 or 6, characterized in that, The outer peripheral wall of the piston and the inner wall surface of the hollow channel are in frictional fit, so that the piston of the spray pump remains unchanged relative to the downward pressure of the spray head when the spray pump can be opened for spraying.

8. The spray pump according to claim 1, characterized in that, The valve device includes a valve mechanism, an air inlet channel, and an air outlet channel, and the valve mechanism includes a first valve and a second valve; The first valve is configured to open only when the movable part is pressed downward, allowing the gas in the pressure chamber to enter the inner cavity of the container from the air outlet channel; The second valve is configured to open only when the movable part is reset, allowing gas to enter the pressure chamber from the air inlet channel outside the pressure chamber.

9. The spray pump according to claim 8, wherein, The first valve includes an elastic outer blade, The outer blade is arranged outside the pressure chamber and corresponds to the air outlet of the air outlet channel; The outer blade opens the air outlet when the air pressure in the pressure chamber is greater than the air pressure in the air outlet channel, and closes the air outlet when the air pressure in the pressure chamber is less than the air pressure in the air outlet channel.

10. The spray pump according to claim 8, characterized in that, The second valve includes an elastic inner blade, The inner blade is arranged inside the pressure chamber and corresponds to the air inlet of the air inlet channel; The inner blade opens the air inlet when the air pressure in the pressure chamber is less than the external air pressure, and closes the air inlet when the air pressure in the pressure chamber is greater than the external air pressure.

11. The spray pump according to claim 8, characterized in that, The fixed part includes a cylinder, The cylinder includes a surrounding outer side wall and a bottom wall, and the bottom wall has a protruding cylindrical part; The movable part includes a top wall and a surrounding inner side wall, and the top wall has a protruding tubular part; The outer peripheral edge of the top wall is in sealed and sliding contact with the inner wall surface of the surrounding outer side wall; The lower end of the surrounding inner side wall is in sealed and sliding contact with the inner wall surface of the cylindrical part; The surrounding outer side wall, the bottom wall, the top wall, and the surrounding inner side wall enclose the pressure chamber; The tubular part provides the hollow channel.

12. The spray pump according to claim 11, wherein The top wall and the surrounding inner side wall are integrally formed and assembled together, The valve mechanism includes an annular part, a first valve located on the inner peripheral side of the annular part, and a second valve located on the outer peripheral side of the annular part, The first valve includes an elastic outer blade, The outer blade is arranged outside the pressure chamber and corresponds to the air outlet of the air outlet channel, The outer blade opens the air outlet when the air pressure in the pressure chamber is greater than the air pressure in the air outlet channel, and closes the air outlet when the air pressure in the pressure chamber is less than the air pressure in the air outlet channel; The second valve includes an elastic inner blade, The inner blade is arranged inside the pressure chamber and corresponds to the air inlet of the air inlet channel, The inner blade opens the air inlet when the air pressure in the pressure chamber is less than the external air pressure, and closes the air inlet when the air pressure in the pressure chamber is greater than the external air pressure; An outer flange is provided on the outer peripheral wall of the surrounding inner side wall, and an air outlet hole is provided on the outer flange; The top wall is provided with an annular clamping groove, the annular part is installed in the annular clamping groove, and the lower end is in sealed contact with the outer flange, so that the outer blade is isolated outside the pressure chamber.

13. The spray pump according to claim 11, wherein The top wall and the inner wall of the surrounding are formed separately and assembled together. The valve mechanism includes an annular portion and a second valve located on the outer peripheral side of the annular portion. The second valve includes an elastic inner blade. The inner blade is arranged inside the pressure chamber and corresponds to communicate with the air inlet of the air inlet passage. The inner blade opens the air inlet when the air pressure in the pressure chamber is less than the external air pressure, and closes the air inlet when the air pressure in the pressure chamber is greater than the external air pressure. An outer flange is provided on the outer peripheral wall of the inner wall of the surrounding, and an air outlet is provided on the outer flange. The top wall is provided with an annular card slot, the annular portion is installed in the annular card slot, and the lower end is in sealing contact with the outer flange. The lower port of the inner wall of the surrounding is provided with an elastic outward expansion structure, and the outward expansion structure is the first valve. A gap between the outward expansion structure and the inner wall of the cylindrical portion selectively forms an air outlet corresponding to communicate with the air outlet passage. The outward expansion structure opens the air outlet by contracting when the air pressure in the pressure chamber is greater than the air pressure in the air outlet passage, and expands the air outlet when the air pressure in the pressure chamber is less than the air pressure in the air outlet passage.

14. The spray pump according to claim 11, wherein The fixed part further includes a cover body. The cover body and the air cylinder are fixedly assembled. The cover body has a neck surrounding the tubular portion. The movable part includes a pressing head. The pressing head has an outer cylinder and an inner cylinder. The outer cylinder is movably arranged on the outer periphery of the neck, and the inner cylinder is fixedly assembled with the tubular portion on the outer periphery of the tubular portion and jointly provides the hollow channel.

15. A spray system, comprising a container, characterized in that, It further includes a spray pump according to any one of claims 1 to 14, the spray pump is arranged on the container, and the material output channel of the spray pump is communicated with the inner cavity of the container.

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