Spraying pump and spraying system

Abstract

The utility model 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 used for outputting materials. The spraying device comprises a material output channel communicated with an inner cavity of the container, a material release structure selectively communicated with the material output channel and a gas pressurizing device used for increasing 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 utility model relates to the technical field of spray pumps, in particular to a spray pump and a spray system. Background Art

[0002] As the use of packaging containers with spray functions continues to expand, they have good application prospects in the fields of medicine, cosmetics, food and agriculture, among which aerosol is a common type. Aerosol refers to a liquid, suspension or emulsion made by placing materials and propellants in a pressure-resistant and sealed container with a special valve system. When used, the material is sprayed out in the form of mist particles by the pressure of the propellant. The aerosol device includes a container and an aerosol contained in the container.

[0003] Conventional propellants for aerosol devices include liquefied gas and compressed gas. Liquefied gas has certain chemical properties and flammability, and compressed gas has certain dangers. This results in limitations in the use and transportation of aerosol devices, and high costs. Summary of the invention

[0004] The utility model aims to provide a spray pump to replace the propellant in a conventional aerosol device, and has a simple structure and can realize the inflation and pressurization of materials in a limited space.

[0005] One aspect of the utility model provides a spray pump, which is installed on a container of a spray system; the spray pump includes a spray device for outputting materials, the spray device includes a material output channel connected to the inner cavity of the container, and a material release structure that can selectively communicate with the material output channel; the spray pump also includes a gas booster device for increasing the air pressure in the container; the gas booster device includes a resettable 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 the movable part is compressed, 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 booster device and the spray device are coaxially arranged, and the gas booster device provides a hollow channel, and the hollow channel connects the material output channel and the material release structure.

[0006] In one 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 located at the lower position can be ejected to the higher position with the aid of the pressurization in the container, so that the position change of the material release structure has an indicating function of indicating that the spray pump can start spraying.

[0007] In one embodiment, the material release structure includes a resettable spray press head, a release valve, and a main column connected to the spray press head at one end and connected to the release valve at the other end, the spray press head is provided with a nozzle for outputting materials to the outside of the spray press head, the main column is provided with a material release channel connected to the output port, and the material release channel and the material output channel of the main column are selectively connected; the release valve is configured as follows: when the spray press head is pressed down, the release valve connects the material release channel and the material output channel; when the spray press 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 contacts and cooperates with the inner wall surface of the hollow channel, the valve body is also sleeved on the main column, and 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 slides with the valve body and can move to a first position or a second position relative to the valve body; 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 separated from the valve body to connect the material release channel and the material output channel.

[0009] In one embodiment, the valve hole is a throttle hole that passes through 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 point; in the lower position of the material release structure, the piston moves to the piston bottom dead point.

[0011] In one embodiment, the inner wall surface of the hollow channel also provides a piston top dead center, and 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.

[0012] In one embodiment, the outer peripheral wall of the piston and the inner wall surface of the hollow channel are frictionally matched, so that the downward pressure of the piston relative to the spray head remains unchanged when the spray pump is turned on for spraying.

[0013] In one embodiment, the material release structure further comprises a first elastic member, which is based on the valve body and exerts a restoring elastic force on a moving assembly formed by the main column, the valve seat and the spray head.

[0014] In one embodiment, 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 down, 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 the gas to enter the pressure chamber from the air inlet channel from the outside of the pressure chamber.

[0015] In one embodiment, the first valve includes an elastic outer blade, which is arranged on the outside of the pressure chamber and corresponds to an outlet connected to the outlet channel; the outer blade opens the outlet when the air pressure in the pressure chamber is greater than the air pressure in the outlet channel, and closes the outlet when the air pressure in the pressure chamber is less than the air pressure in the outlet channel.

[0016] In one embodiment, the second valve includes an elastic inner blade, which is arranged on the inner side of the pressure chamber and corresponds to an air inlet connected to the air inlet passage; the inner blade opens the air inlet when the air pressure in the pressure chamber is lower than the external air pressure, and closes the air inlet when the air pressure in the pressure chamber is higher than the external air pressure.

[0017] In one embodiment, the fixed part includes an air cylinder, which includes an outer wall and a bottom wall, and the bottom wall has a protruding cylindrical portion; the movable part includes a top wall and an inner wall, and the top wall has a protruding tubular portion; the outer peripheral edge of the top wall is sealed and in sliding contact with the inner wall surface of the outer wall; the lower end of the inner wall is sealed and in sliding contact with the inner wall surface of the cylindrical portion; the outer wall, the bottom wall, the top wall, and the inner wall together 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 formed separately and assembled together, the valve mechanism includes an annular portion, a first valve located on the inner circumference of the annular portion, and a second valve located on the outer circumference of the annular portion, the first valve includes an elastic outer blade, the outer blade is arranged on the outer side of the pressure chamber, corresponding to the air outlet connected to 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 on the inner side of the pressure chamber, corresponding to the air inlet connected to 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; the outer circumferential wall of the enclosure inner side wall is provided with an outer flange, and an air outlet hole is provided on the outer flange; the top wall is provided with an annular groove, the annular portion is mounted on the annular 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 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 on the inner side of the pressure chamber, corresponding to the air inlet connected to 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 arranged on the outer peripheral wall of the enclosure, and an outlet is arranged on the outer flange air port; the top wall is provided with an annular groove, the annular portion is installed in the annular 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 arranged to be an elastic outward expansion structure, the outward expansion structure is the first valve, and the gap between the outward expansion structure and the inner wall of the cylindrical portion selectively forms an air outlet corresponding to the air outlet channel, the outward expansion structure opens the air outlet by contraction when the air pressure in the pressure chamber is greater than the air pressure in the air outlet channel, and opens the air outlet by expanding 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 also includes a cover body, the cover body and the gas cylinder are fixedly assembled, the cover body has a neck surrounding the tubular portion, and the movable part includes a pressurizing head; the pressurizing head has an outer cylinder and an inner cylinder, the outer cylinder is movably arranged on the periphery of the neck, and the inner cylinder is fixedly assembled with the tubular portion on the periphery of the tubular portion and together provide the hollow channel.

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

[0022] Another aspect of the utility model provides a spray system, comprising a container, characterized in that it also comprises a spray pump as described in any one of the above items, wherein the spray pump is arranged on the container, and the material output channel of the spray pump is connected to the inner cavity of the container.

[0023] The spray pump of the utility model adopts a gas booster device to replace the propellant in a conventional aerosol device, and while realizing the spray function, the volume of the pressure chamber can be changed by pressing the movable part to inflate the container, and instant inflation and instant use can be realized without pre-filling gas; the user presses the spray device to spray continuously and quantitatively, and the user experience is better; and, compared with the separate design in which the gas booster device and the spray device are independent of each other, the spray pump of the utility model arranges the gas booster device and the spray device on the same axis, and can realize inflation and pressurization of materials in a limited space without changing the original structure and volume of the container, and has a simple structure, optimizes space utilization, and has a small overall volume and a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

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

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

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

[0029] Figure 5a yes Figure 2 A rear view of the spray pump with the material release structure shown in a lowered position;

[0030] Figure 5b yes Figure 2 A rear view of the spray pump with the material release structure shown in a higher position;

[0031] Figure 5c yes Figure 2 A front view of the material release structure of the spray pump shown in a lowered position;

[0032] Figure 5d yes Figure 2 A front view of the material release structure of the spray pump shown in a higher position;

[0033] Figure 5e yes Figure 2 A side view of the material release structure of the spray pump shown in a higher position;

[0034] Figure 6 yes Figure 2 A schematic diagram of the main column of the spray pump shown;

[0035] Figure 7 yes Figure 2 A schematic diagram of the piston of the spray pump shown;

[0036] Figure 8 yes Figure 2 A schematic diagram of a valve seat of a spray pump shown;

[0037] Fig. 9 yes Figure 2 A schematic diagram of the top wall of the spray pump shown;

[0038] Fig.10 yes Figure 2 A schematic diagram of the inner side wall of the enclosure of the spray pump shown;

[0039] Fig.11 yes Figure 2 A schematic diagram of the valve mechanism of the spray pump shown;

[0040] Fig.12 yes Figure 3 Schematic diagram of the air inlet channel and the air outlet channel of the spray pump shown. DETAILED DESCRIPTION

[0041] Reference will now be made in detail to 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, rather than to limit the present invention. In fact, it will be apparent to those skilled in the art that various modifications and variations may be made in the present invention without departing from the scope or spirit of the present invention. For example, a feature shown or described as part of one embodiment may be used together with another embodiment to produce yet another embodiment. Therefore, 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 component, or to distinguish one position from another position, and are not intended to indicate the importance of each component. Figure 3 The terms "upper" and "lower" refer to the positional relationship when the spray pump is assembled on the container of the spray system. The terms "higher position" and "lower position" refer to the position of the top of the material release structure relative to the top of the active part, and the "higher position" is located on the "lower position".

[0043] Figure 1 The spray pump 10 of the spray system is shown. The spray system is a liquid, suspension or emulsion made by placing materials in a container. When used, the materials are sprayed out in the form of mist particles by the pressure of the propellant. The spray system includes a container (not shown) and a spray pump 10. The spray pump 10 is arranged on a container not shown in the figure, and the spray pump 10 is connected to the inner cavity 20 of the container to achieve a spraying effect. The above-mentioned "material" includes but is not limited to liquid, solid and solid-liquid mixture, and the state of the material sprayed by the spray system includes but is not limited to mist, foam, droplet and solid.

[0044] Figure 2 and Figure 3 The spray pump 10 of one embodiment of the utility model 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 connected to the inner cavity 20 of the container, and a material release structure 120 that can selectively communicate with the material output channel 110. The spray pump 10 also includes a gas booster 200 for increasing the gas pressure in the container. The gas booster 200 includes a resettable movable part and a fixed part 220, and a pressure chamber 230 is enclosed between the fixed part 220 and the movable part; the pressure chamber 230 is provided with a valve device, and when 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 gas pressure in the container. When the pressure chamber 230 is reset by the movement of the movable part, the valve device allows the gas outside the pressure chamber 230 to enter the pressure chamber 230. The gas booster device 200 and the spray device 100 are coaxially arranged, and the gas booster device 200 provides a hollow channel 211, which connects the material output channel 110 and the material release structure 120. Figure 3 The gas booster device 200 is hollow and is partially sleeved outside the material output channel 110 . The axis of the hollow channel 211 is consistent with the axis of the material output channel 110 .

[0045] The spray pump 10 of one embodiment of the utility model arranges the gas booster device 200 and the spray device 100 on the same axis. Compared with the separate design in which the gas booster device 200 and the spray device 100 are independent of each other, the spray pump 10 of the utility model can simplify the structure of the spray pump 10 and optimize the space utilization while ensuring the realization of the above-mentioned spray function. In this way, the overall volume of the spray pump 10 is small, which can expand the application field and improve the user experience.

[0046] By pressing the gas booster 200 of the spray pump 10, the user can inflate the container of the spray system, achieving instant inflation and immediate use; the user can press the spray device 100 to continuously spray a fixed amount of material, which can solve the inconvenience caused to the user by non-continuous spraying, and the fixed amount of material sprayed makes it easy for the user to determine the number of interval presses according to needs.

[0047] In terms of production and transportation, the spray pump 10 of one embodiment of the utility model does not need to be filled with gas, which can enhance safety compared to conventional aerosol containers filled with propellants, thereby expanding the applicable population, and the elderly and children can also use it alone; and the lack of filling gas can reduce filling requirements, simplify the manufacturing process, and reduce production costs.

[0048] Conventional aerosols have high requirements for the pressure resistance of the container because they are filled with pressurized propellants. Usually, the materials of pressure-resistant containers include glass and metal. The spray pump 10 of an embodiment of the utility model does not need to be filled with gas, so it has low requirements for the pressure resistance of the container. It can be manufactured by injection molding process, which is more economical. There is no pressure filling before leaving the factory. The spray pump 10 of an embodiment of the utility model can be replaced at any time. It can be replaced when the original spray pump 10 is damaged or there are other needs. The container and materials are inconvenient, and the concept of environmental protection and green is implemented.

[0049] Figure 4 A top view of a spray pump 10 according to an embodiment of the present invention is shown. Figure 5a to Figure 5e The figure shows different usage states of the spray pump 10 of one embodiment of the utility model. In some embodiments, the material release structure 120 can move between a lower position A and a higher position B, and 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 means of the pressure increase in the container, so that the position change of the material release structure 120 has an indication function of indicating that the spray pump 10 can start spraying.

[0050] When the user uses the spray pump 10 for the first time, or when the pressure in the container is lower than the external pressure, the material release structure 120 is located at the lower position A, such as Figure 5a and Figure 5cAs shown, the top of the material release structure 120 is lower than the top of the active 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 head 217 of the gas booster 200. The user cannot press down on the material release structure 120, and the material cannot be sprayed out. At this time, the user can know that the current spray pump 10 cannot be started normally because the material release structure 120 is located at the lower position A. When the gas booster 200 is pressed downward and the pressure in the inner cavity 20 of the container reaches a certain pressure value, the material release structure 120 is pushed upward by the larger air pressure, such as Figure 5b , Figure 5d and Figure 5e As shown, the spray pump 10 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 in position that the current spray pump 10 can be started normally. During use, the pressure in the container decreases, and when the material release structure 120 is located at the lower position A again, the spraying stops. At this time, the user can inflate the movable part again and use the spray pump 10 normally. The spray pump 10 of this embodiment can clearly and intuitively indicate the working state of the spray device 100 to avoid user's misoperation.

[0051] Figure 6 The main column 124 of the spray pump 10 of one embodiment of the utility model is shown. In some embodiments, the material release structure 120 includes a resettable 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 materials to the outside of the spray head 121, and the main column 124 is provided with a material release channel 124a connected to the output port, and the material release channel 124a of the main column 124 and the material output channel 110 are selectively connected. Among them, the release valve 123 is configured: when the spray head 121 is pressed down, 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 allows the material to have a channel to be sprayed out from the nozzle 122 when the spray head 121 is pressed down, and prevents the material from being sprayed out when the spray head 121 is reset, ensuring that the material release structure 120 can switch the working state normally 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 contacts and cooperates with the inner wall surface of the hollow channel 211. The valve body is also sleeved 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 slides with the valve body and can move relative to the valve body to a first position C or a second position (not shown). In 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; in the second position, the valve hole 124b is separated from the valve body to connect the material release channel 124a and the material output channel 110. In one embodiment, the valve body is configured 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 shown in FIG. Figure 3 As shown in the figure, 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, and the second position is lower than the first position C, that is, Figure 3 In the first position C shown, the main column 124 moves downward along with the spray head 121 , and the valve hole 124b also moves downward; 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 passes through the material release channel 124a and the outside of the main column 124 to limit the flow of the material entering the nozzle 122 from the material release channel 124a, which is conducive to the continuous ejection of the material. Figure 6 As shown, there may be two throttling holes, which are symmetrically arranged in the circumferential direction of the main column 124. The aperture of the throttling hole may be determined according to the material form. For example, the aperture of the throttling hole corresponding to the solid material may be larger than that of the powder material and the liquid material.

[0054] In some embodiments, the inner wall surface of the hollow channel 211 provides a piston bottom dead center 212, such as Figure 3 As 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 and the main column 124 are pushed downward by the piston 123a; when the piston 123a moves to the piston bottom dead center 212, the material release structure 120 is located at the lower position A, so as to achieve the function of indicating that the material release structure 120 cannot spray out the material.

[0055] Continue to refer Figure 3In 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 detached due to excessive pressure in the container. In one embodiment, the piston top dead center 213 is a clamping ring that protrudes toward the axis of the top surface of the pressurizing head 217 in the circumferential direction. In another embodiment, the piston top dead center 213 is an annular protrusion on the inner wall surface of the pressurizing head 217 that contacts the spray head 121, and the outer wall surface of the spray head 121 is provided with an annular groove corresponding to the annular protrusion, which can also achieve the above effect.

[0056] Figure 7 FIG. 2 shows a valve body of a spray pump 10 according to an embodiment of the present invention. In some embodiments, the outer peripheral wall 123a-1 of the piston 123a and the inner wall surface of the hollow channel 211 are frictionally matched. The movable part providing the hollow channel 211 includes a pressurizing head 217, such as Figure 3 As shown, the outer peripheral wall 123a-1 of the piston 123a and the inner wall surface of the pressure head 217 are frictionally matched, so that when the spray pump 10 can start spraying, the downward pressure of the piston 123a relative to the spray head 121 remains unchanged, so as to ensure that the valve hole 124b can smoothly separate from the valve body. Under the condition that the friction force of the sliding fit between the piston 123a and the main column 124 is less than the sum of the friction force between the piston 123a and the pressure head 217 and the force generated by the upward pressure of the air pressure in the container, the position of the downward-pressing piston 123a relative to the spray head 121 can remain unchanged. On the contrary, the downward pressure of the spray head 121 will drive the piston 123a to move downward together. Figure 3 It can be seen that even if the spray head 121 is pressed downward to drive the piston 123a to move downward together, the piston 123a cannot move downward further after moving to the piston bottom dead point 212. The friction fit between the piston 123a and the inner wall surface of the hollow channel 211 can be achieved by increasing the diameter of the outer circumference of the piston 123a.

[0057] like Figure 7 As shown, the piston 123a also includes a lower end portion 123a - 2 , which can be sealed and slidably contacted with the inner wall surface of the movable part to ensure that the material is always in the material output channel 110 .

[0058] Figure 8 FIG. 1 shows the valve seat 123b of the spray pump 10 of one embodiment of the present utility model. Figure 8As 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 protrusions 123b-1 in the circumferential direction. When the main column 124 is located at 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 located at the second position, the valve seat 123b and the piston 123a are separated.

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

[0060] In some embodiments, the valve device includes a valve mechanism 240, an air inlet channel, and an air outlet channel, and 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 chamber 20 of the container from the air outlet channel. The second valve is configured to open only when the movable part is reset, allowing the gas to enter the pressure chamber 230 from the air inlet channel from the outside of the pressure chamber 230. The air inlet channel only allows external gas to enter the pressure chamber 230; the air outlet channel 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 blade 241, and the outer blade 241 is arranged outside the pressure chamber 230, corresponding to the air outlet 214 connected to 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 elastic outer blade 241 can be opened when the volume of the pressure chamber 230 is compressed to a certain air pressure value, connecting the pressure chamber 230 and the air outlet channel. If the air pressure in the pressure chamber 230 is greater than the air pressure in the air outlet channel, the gas in the pressure chamber 230 will enter the air outlet channel. The first valve arranged in this way has a simple structure and a fast response.

[0062] In some embodiments, the second valve includes an elastic inner blade 242, which is arranged inside the pressure chamber 230, corresponding to the air inlet 215 connected to 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. The elastic inner blade 242 can be opened 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 external air pressure, the external gas will enter the pressure chamber 230. The second valve arranged in this way has a simple structure and a fast response.

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

[0064] Fig.11 FIG. 2 shows a valve mechanism 240 of a spray pump 10 of an embodiment of the present invention. In some embodiments, the top wall 216 and the inner wall 218 are formed separately and assembled together. The top wall 216 and the inner wall 218 formed separately are convenient for production and actual assembly, and reduce production costs. Fig.11As 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 circumference of the annular portion 243, and the second valve is located on the outer circumference of the annular portion 243. The first valve includes an elastic outer blade 241, which is arranged on the outer side of the pressure chamber 230, corresponding to the air outlet 214 connected to 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, which is arranged on the inner side of the pressure chamber 230, corresponding to the air inlet 215 connected to 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. The outer peripheral wall surrounding the inner side wall 218 is provided with an outer flange 218a, and an air outlet 218b is provided on the outer flange 218a. The top wall 216 is provided with an annular groove 216b, and the annular portion 243 is installed in the annular groove 216b, and the lower end is in sealing contact with the outer flange 218a, so that the outer blade 241 is isolated from the pressure chamber 230. The valve mechanism 240 in this embodiment has a simple structure, and can reduce costs compared to the first valve and the second valve being separately provided.

[0065] In other embodiments, the structure of the first valve is different from that of the previous embodiment. The following only describes the first valve in detail, and the same parts can refer to the description of the previous embodiment. Figure 3 and Fig.10 As shown, the first valve of the spray pump 10 of this embodiment is a lower port of the inner side wall 218 that is surrounded by an elastic outward expansion structure 218c, and the gap between the outward expansion structure 218c and the inner wall of the cylindrical portion 223a selectively forms an outlet corresponding to the outlet channel, that is, Figure 3 At 214a shown, the outward expansion structure 218c opens the air outlet by contraction when the air pressure in the pressure chamber 230 is greater than the air pressure in the air outlet channel, and the air outlet is tightly closed when the air pressure in the pressure chamber 230 is less than the air pressure in the air outlet channel. The outward expansion structure 218c is elastic, and when the air pressure in the pressure chamber 230 is greater than the air pressure in the air outlet channel, the outward expansion structure 218c in contact with the inner wall of the cylindrical portion 223a contracts toward its axial direction under the action of pressure, so that a gap is generated between the outward expansion structure 218c and the inner wall of the cylindrical portion 223a for gas to pass through, forming an air outlet, and the gas in the pressure chamber 230 enters the air outlet channel through the gap.

[0066] In some embodiments, the fixed part 220 further includes a cover 224, and the cover 224 and the gas cylinder 221 are fixedly assembled. The cover 224 has a neck 224a surrounding the tubular portion 216a, and the movable part includes a pressurizing head 217. The pressurizing 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 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 provide a hollow channel 211. Fig.12 FIG. 1 shows an air inlet channel and an air outlet channel of a spray pump 10 according to an embodiment of the present invention. Fig.12 As shown by the solid arrow, the outlet channel is Fig.12 When the pressure in the pressure chamber 230 is lower than the outside pressure, the outside gas enters the annular groove 217c between the neck 224a and the inner cylinder 217b from the gap between the outer cylinder 217a and the neck 224a of the pressurizing head 217, and then enters the pressure chamber 230 through the opened air inlet 215. When the pressure in the pressure chamber 230 is higher than the pressure in the air outlet channel, the gas in the pressure chamber 230 enters the air outlet channel through the opened air outlet hole 218b and the air outlet 214, and finally enters the inner chamber 20 of the container through the air outlet hole 223b.

[0067] In some embodiments, the gas booster device 200 further includes a second elastic member 250 extending in the annular groove 217c between the neck 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 pressurizing head 217, for providing elastic force for restoring the pressurizing head 217 and the movable part, so as to achieve the function of continuously pressing the pressurizing head 217 for multiple times. The second elastic member 250 may be a spring or other elastic material, such as rubber.

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

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

Claims

1. A spray pump installed on the container of the spray system; The spray pump comprises a spray device for outputting materials, wherein the spray device comprises 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 also includes a gas pressurizing device for increasing the gas pressure in the container; The gas booster device comprises a resettable movable part and a fixed part, wherein 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 gas 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 booster device and the spray device are coaxially arranged, and the gas booster device provides a hollow channel, and the hollow channel is connected to the material output channel and the material release structure.

2. The spray pump according to claim 1, characterized in that The material release structure can move between a lower position and a higher position, wherein the lower position is lower than the higher position; The material release structure located at the lower position can be pushed out to the higher position by means of the increased pressure in the container, so that the position change of the material release structure has an indicating function of indicating that the spray pump can start spraying.

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

4. The spray pump according to claim 3, characterized in that The release valve comprises a valve body and a valve seat. The valve body is located in the hollow channel and contacts and cooperates with the inner wall surface of the hollow channel. The valve body is also sleeved on the main column. The valve seat is fixedly arranged at the lower end of the main column. The main column comprises a valve hole, and the main column is slidably matched 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 separated from the valve body, and the material release channel and the material output channel are connected.

5. The spray pump according to claim 4, characterized in that The valve body is a piston, and the inner wall surface of the hollow channel provides the piston bottom dead point; At 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, characterized in that The inner wall surface of the hollow channel also provides the piston top dead center. In the upper position of the material release structure, the piston is movable 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 frictionally matched, so that the downward pressure of the piston relative to the spray head remains unchanged when the spray pump can start spraying.

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

9. The spray pump according to claim 8, characterized in that The first valve comprises a resilient outer blade, The outer blade is arranged outside the pressure chamber, corresponding to the air outlet connected to 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 comprises a resilient inner blade, The inner blade is arranged inside the pressure chamber, corresponding to the air inlet connected to the air inlet passage; The inner blade opens the air inlet when the air pressure in the pressure chamber is lower than the external air pressure, and closes the air inlet when the air pressure in the pressure chamber is higher than the external air pressure.

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

12. The spray pump according to claim 11, characterized in that The top wall and the inner side wall of the enclosure are formed separately and assembled together. The valve mechanism includes an annular portion, a first valve located on the inner circumference of the annular portion, and a second valve located on the outer circumference of the annular portion. The first valve comprises a resilient outer blade, The outer blade is arranged outside the pressure chamber, corresponding to the air outlet connected to 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 comprises a resilient inner blade, The inner blade is arranged inside the pressure chamber, corresponding to the air inlet connected to the air inlet passage. The inner blade opens the air inlet when the air pressure in the pressure chamber is lower than the external air pressure, and closes the air inlet when the air pressure in the pressure chamber is higher than the external air pressure; The outer peripheral wall of the inner side wall is provided with an outer flange, and the outer flange is provided with an air outlet; The top wall is provided with an annular groove, the annular portion is mounted in the annular groove, and the lower end is in sealing contact with the outer flange, so that the outer blades are isolated outside the pressure chamber.

13. The spray pump according to claim 11, characterized in that The top wall and the inner side wall of the enclosure are formed separately and assembled together. The valve mechanism includes an annular portion, a second valve located on the outer peripheral side of the annular portion, The second valve comprises a resilient inner blade, The inner blade is arranged inside the pressure chamber, corresponding to the air inlet connected to the air inlet passage. The inner blade opens the air inlet when the air pressure in the pressure chamber is lower than the external air pressure, and closes the air inlet when the air pressure in the pressure chamber is higher than the external air pressure; The outer peripheral wall of the inner side wall is provided with an outer flange, and the outer flange is provided with an air outlet; The top wall is provided with an annular groove, the annular portion is installed in the annular 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 configured as an elastic outward expansion structure, and the outward expansion structure is the first valve. The gap between the outward expansion structure and the inner wall of the cylindrical portion selectively forms an air outlet corresponding to the air outlet channel. The outward expansion structure opens the air outlet by contraction 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.

14. The spray pump according to claim 11, characterized in that The fixing part further comprises a cover body, The cover body and the gas cylinder are fixedly assembled, The cover body has a neck surrounding the tubular portion, The movable part includes a pressure pressing head; The pressurizing head comprises an outer cylinder and an inner cylinder. The outer cylinder is movably arranged at the periphery of the neck, and the inner cylinder is fixedly assembled with the tubular portion at the periphery of the tubular portion and together provide the hollow passage.

15. A spray system comprising a container, characterized in that: It also includes a spray pump as described in any one of claims 1 to 14, wherein the spray pump is disposed on the container, and the material output channel of the spray pump is connected to the inner cavity of the container.

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