Double-piston spray pump

Abstract

The utility model discloses a double-piston spray pump relates to spray pump technical field, the double-piston spray pump includes head cap and head cap connected pump core, the pump core includes main part, lock cover, first piston rod, second piston rod, milk outlet rod, elastic piece and stop bead, lock cover is installed in main part one end, first piston rod lower end is installed in main part, second piston rod lower end is installed in the main part, the second piston rod is installed in the main body, the upper end of the second piston rod is located in the first piston rod, the milk outlet rod is installed in the main body, the upper end of the milk outlet rod is located in the second piston rod, the elastic piece is sleeved on the milk outlet rod, the blocking ball is installed on a feeding port of the main body, at least one first discharging port is arranged at the top end of the second piston rod, and at least one second discharging port is arranged at the bottom end of the milk outlet rod. The pump core is the double-piston pump core, the double pistons can release explosive force instantly in the pressing and resetting process, the instant atomization effect of a product is achieved, the spraying angle is effectively enlarged, the spraying effect of the spraying pump on materials with high viscosity and large interfaces is achieved, and the product quality is stabilized.

Description

Technical Field

[0001] The utility model relates to the technical field of spray pumps, in particular to a double piston spray pump. Background Art

[0002] Spray pumps (atomizing pumps) are widely used in daily life. For example, perfume, medicinal sprays, etc. all use spray pumps. A spray nozzle is a spraying device that makes a liquid spray out from a fine hole to form tiny droplets in a mist shape.

[0003] Traditional spray pumps are all built-in spray pumps, which have a good spraying effect on thin or low-viscosity materials. However, for products with a higher viscosity, either the spraying force or the spraying breadth is insufficient, or the water droplets are too large to meet the spraying requirements. Most of the external spray pumps on the market at present have no explosiveness or a poor explosion effect. For materials with a higher viscosity or a larger interface, such spray pumps do not have a good atomizing and spraying effect. Summary of the Utility Model

[0004] The utility model aims to solve the problem of poor atomizing and spraying effect in the prior art. To this end, the purpose of the utility model is to provide a double piston spray pump, which has good explosiveness and improves the spraying effect of the spray pump on products with a higher viscosity or a larger interface.

[0005] To achieve the above purpose, the utility model provides a double piston spray pump, including a pump core connected to a head cap. The pump core includes a main body, a locking cover, a first piston rod, a second piston rod, a milk outlet rod, an elastic member and a retaining bead. The locking cover is installed at one end of the main body. The lower end of the first piston rod is installed in the main body. The second piston rod is installed in the main body and its upper end is located in the first piston rod. The milk outlet rod is installed in the main body and its upper end is located in the second piston rod. The elastic member is sleeved on the milk outlet rod. The retaining bead is installed at the feed inlet of the main body. At least one first discharge port is provided at the top end of the second piston rod, and at least one second discharge port is provided at the bottom end of the milk outlet rod.

[0006] Further, on the basis of the above scheme, a first piston is provided at the lower end of the first piston rod, and the outer wall of the first piston is in close fit with the inner wall of the main body.

[0007] Further, on the basis of the above scheme, a second piston is provided in the middle of the second piston rod, and the outer wall of the second piston is in close fit with the inner wall of the main body.

[0008] Further, on the basis of the above scheme, a neck opening is provided on the inner wall of the first piston rod, and a plug is provided at the upper end of the second piston rod. The plug is conical and is used in cooperation with the neck opening.

[0009] Further on the basis of the above scheme, a first rib is provided on the inner wall of the first piston rod, and a second rib is provided on the outer wall of the second piston rod, and the second rib is matched with the first rib.

[0010] Further on the basis of the above solution, the first piston rod is further provided with a first clamping platform below the first buckle rib, and the second piston rod is further provided with a second clamping platform below the second buckle rib.

[0011] Further on the basis of the above scheme, a socket is provided at the lower end of the milking rod, the second material outlet is provided on the socket, a contact platform is provided inside the second piston rod, one end face of the elastic member contacts the upper end face of the socket, and the other end face contacts the lower end face of the contact platform.

[0012] Further on the basis of the above solution, the first piston rod is a hollow structure with openings at both ends, and the internal aperture of the first piston rod decreases in a step-like manner from bottom to top.

[0013] Further on the basis of the above scheme, the second piston rod is a hollow structure with an open end and a sealed end, and the internal aperture of the second piston rod decreases in a step-like manner from bottom to top.

[0014] Beneficial effects of the utility model:

[0015] The utility model has a double-piston pump core in the pump core. The double pistons can instantly release explosive force during the pressing and resetting process, complete the instantaneous atomization effect of the product, effectively increase the spray angle, and realize the spray effect of the spray pump on materials with high viscosity and large interface.

[0016] The features and advantages of the present invention will be described in detail through embodiments in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional diagram of the double-piston spray pump of the utility model;

[0018] Figure 2 It is a cross-sectional view of the double-piston spray pump of the utility model;

[0019] Figure 3 This utility model Figure 2 A in the enlarged view;

[0020] Figure 4 This utility model Figure 2 The enlarged view of point B in the figure;

[0021] Figure 5 It is a sectional view of the pump material state of the utility model.

[0022] In the figure: 1. Head cap;

[0023] 2. Pump core, 21. Main body, 211. Feed port, 22. Lock cover, 23. First piston rod, 231. First piston, 232. Neck, 233. First buckle rib, 234. First clamp, 24. Second piston rod, 241. Second piston, 242. Plug, 243. Second buckle rib, 244. Second clamp, 245. Contact platform, 246. First discharge port, 25. Discharge rod, 251. Second discharge port, 252. Socket, 26. Elastic part, 27. Stop bead. DETAILED DESCRIPTION

[0024] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0025] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices consistent with some aspects of the present application as detailed in the appended claims.

[0026] The terms used in this application are only for the purpose of describing specific embodiments and are not intended to limit this application. Unless otherwise defined, the technical terms or scientific terms used in this application should be understood by people with ordinary skills in the field to which the utility model belongs. The words "one" or "one" and the like used in the specification and claims of this application do not indicate a quantitative limitation, but indicate the existence of at least one. "Multiple" includes two, which is equivalent to at least two. "Including" or "including" and the like mean that the elements or objects appearing in front of "including" or "including" include the elements or objects listed after "including" or "including" and their equivalents, and do not exclude other elements or objects. "Connected" or "connected" and the like are not limited to physical or mechanical connections, and can include electrical connections, whether direct or indirect. The singular forms of "one", "said" and "the" used in the specification and the appended claims of this application are also intended to include plural forms, unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0027] Please refer to Figures 1-5, A double-piston spray pump, comprising a head cap 1 and a pump core 2 connected to the head cap 1. The pump core 2 includes a main body 21, a locking cover 22, a first piston rod 231 (rod 23), a second piston rod 241 (rod 24), a milk discharging rod 25, an elastic member 26, and a retaining bead 27. The head cap 1 is mounted on the first piston rod 231. The locking cover 22 is mounted at one end of the main body 21. The lower end of the first piston rod 231 is mounted in the main body 21. The second piston rod 241 is mounted in the main body 21 and its upper end is located inside the first piston rod 231. The milk discharging rod 25 is mounted in the main body 21 and its upper end is located inside the second piston rod 241. The elastic member 26 is sleeved on the milk discharging rod 25. The retaining bead 27 is mounted on the feed inlet 211 of the main body 21. At least one first discharge port 246 is provided at the top end of the second piston rod 241, and at least one second discharge port 251 is provided at the bottom end of the milk discharging rod 25.

[0028] In this embodiment, 4 first discharge ports 246 are provided at the top end of the second piston rod 241, and the 4 first discharge ports 246 are equidistantly arranged. The first discharge ports 246 connect the first piston rod 231 and the second piston rod 241. 2 second discharge ports 251 are provided at the bottom end of the milk discharging rod 25, and the 2 second discharge ports 251 are oppositely arranged. The second discharge ports 251 connect the main body 21 and the second piston rod 241.

[0029] In this embodiment, the elastic member 26 is a spring.

[0030] Furthermore, a first piston 231 is provided at the lower end of the first piston rod 231, and the outer wall of the first piston 231 is in close fit with the inner wall of the main body 21. A second piston 241 is provided in the middle of the second piston rod 241, and the outer wall of the second piston 241 is in close fit with the inner wall of the main body 21. During the pressing and resetting process of the double pistons, explosive force can be instantaneously released to complete the instantaneous atomization effect of the product, effectively increasing the spray angle and realizing the spray effect of the spray pump on materials with high viscosity and large interface.

[0031] Furthermore, a neck opening 232 is provided on the inner wall of the first piston rod 231, and a plug 242 is provided at the upper end of the second piston rod 241. The plug 242 is conical and is used in cooperation with the neck opening 232. As Figure 2 shown, in the normal state, the plug 242 is inserted into the neck opening 232 to block the neck opening 232 to prevent product leakage; as Figure 5 shown, in the material taking state, the plug 242 partially leaves the neck opening 232, the channel is opened, and the product flows out from here.

[0032] Furthermore, a first rib 233 is provided on the inner wall of the first piston 231 rod 23, and a second rib 243 is provided on the outer wall of the second piston 241 rod 24. The second rib 243 is adapted to the first rib 233, and the second rib 243 is stuck above the first rib 233, thereby preventing the first piston 231 rod 23 and the second piston 241 rod 24 from falling off during use.

[0033] Furthermore, the first piston 231 rod 23 is also provided with a first clamping platform 234 below the first buckle rib 233, and the second piston 241 rod 24 is also provided with a second clamping platform 244 below the second buckle rib 243. The first clamping platform 234 and the second clamping platform 244 will conflict with each other, preventing the second piston 241 rod 24 from being over-installed to avoid damaging the plug 242 or the neck 232.

[0034] Furthermore, a socket 252 is provided at the lower end of the milking rod 25, and the socket 252 is plugged into the inside of the main body 21 and fits tightly with the inner wall of the main body 21, so that the milking rod 25 can be fixed in the main body 21, and the second discharge port 251 is provided on the socket 252. A contact platform 245 is provided inside the second piston 241 rod 24, and one end surface of the elastic member 26 contacts the upper end surface of the socket 252, and the other end surface contacts the lower end surface of the contact platform 245.

[0035] Furthermore, the first piston 231 and the rod 23 are hollow structures with openings at both ends, and the internal diameter of the first piston 231 and the rod 23 decreases stepwise from bottom to top. The second piston 241 and the rod 24 are hollow structures with an opening at one end and a sealing end at the other end, and the internal diameter of the second piston 241 and the rod 24 decreases stepwise from bottom to top.

[0036] The utility model is a double-piston spray pump, and its working principle is explained in conjunction with the accompanying drawings:

[0037] The double piston spray pump is used in conjunction with a packaging bottle to pump and atomize materials.

[0038] When pumping material, the head cap 1 is pressed, the elastic member 26 is compressed, and the first piston 231 rod 23 and the second piston 241 rod 24 will drop under the action of the elastic member 26. At the same time, the relative positions of the first piston 231 rod 23 and the second piston 241 rod 24 will also change, and the plug 242 will partially leave the neck 232, and the passage of the neck 232 will open. Figure 2 become Figure 5 Under the action of air pressure, the blocking bead 27 rises, the feed port 211 opens, and the material enters the main body 21 through the feed port 211 of the main body 21, and then enters the second piston 241 rod 24 through the second discharge port 251, enters the first piston 231 rod 23 through the second discharge port 251 and the neck 232, and finally is ejected through the head cap 1.

[0039] The foregoing has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above-mentioned embodiments, and what is described in the above embodiments and the specification only illustrates the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements fall within the scope of the present utility model claimed. The scope of protection of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A double piston spray pump, comprising a pump core connected to a head cap, characterized in that, The pump core includes a main body, a locking cover, a first piston rod, a second piston rod, a milk discharge rod, an elastic member and a stop bead. The locking cover is installed at one end of the main body, the lower end of the first piston rod is installed in the main body, the second piston rod is installed in the main body and the upper end is located in the first piston rod, the milk discharge rod is installed in the main body and the upper end is located in the second piston rod, the elastic member is sleeved on the milk discharge rod, the stop bead is installed on the feed port of the main body, the top end of the second piston rod is provided with at least one first discharge port, and the bottom end of the milk discharge rod is provided with at least one second discharge port.

2. The double piston spray pump according to claim 1, characterized in that, A first piston is disposed at the lower end of the first piston rod, and an outer wall of the first piston is tightly fitted with an inner wall of the main body.

3. The double piston spray pump according to claim 2, characterized in that, A second piston is arranged in the middle of the second piston rod, and an outer wall of the second piston is tightly fitted with an inner wall of the main body.

4. The double piston spray pump according to claim 3, characterized in that, A neck is arranged on the inner wall of the first piston rod, and a plug is arranged on the upper end of the second piston rod. The plug is conical and is used in conjunction with the neck.

5. The double-piston spray pump according to claim 3, characterized in that, A first buckle rib is arranged on the inner wall of the first piston rod, and a second buckle rib is arranged on the outer wall of the second piston rod, and the second buckle rib is matched with the first buckle rib.

6. The double piston spray pump according to claim 5, characterized in that, The first piston rod is further provided with a first clamping platform below the first buckle rib, and the second piston rod is further provided with a second clamping platform below the second buckle rib.

7. The double piston spray pump according to claim 1, characterized in that, A socket is arranged at the lower end of the milking rod, the material outlet is arranged on the socket, a contact platform is arranged inside the second piston rod, one end surface of the elastic member contacts the upper end surface of the socket, and the other end surface contacts the lower end surface of the contact platform.

8. The double piston spray pump according to claim 1, wherein The first piston rod is a hollow structure with openings at both ends, and the internal aperture of the first piston rod decreases in a step-like manner from bottom to top.

9. The double piston spray pump according to claim 1, characterized in that, The second piston rod is a hollow structure with an open end and a sealed end, and the internal aperture of the second piston rod decreases in a step-like manner from bottom to top.

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