Pump head and spray bottle

Abstract

The pump head comprises a pump body, a valve body, a lock cover, a liquid taking rod, a piston and an elastic element, the valve body is arranged in a pump cavity of the pump body and used for opening and closing a bottom opening of the pump body, the lock cover is installed on a top opening of the pump body, and the liquid taking rod is arranged on the lock cover. The liquid taking rod is provided with a bottom liquid inlet hole with an opening in the side wall and a liquid guiding flow channel extending upwards from the bottom liquid inlet hole to the top face, the bottom of the liquid taking rod is arranged in a pump cavity of the pump body, and the top of the liquid taking rod extends out of the pump body through a lock cover penetrating hole of the lock cover. The piston is sleeved at the bottom of the liquid taking rod in a vertically movable mode and arranged in the pump cavity of the pump body and used for opening and closing the bottom liquid inlet hole of the liquid taking rod, and the pump head forms a liquid taking cavity among the pump body, the piston and the bottom of the liquid taking rod. The top of the elastic element is connected to the top of the pump body, the middle of the elastic element is connected to the middle of the liquid taking rod, and the bottom of the elastic element abuts against the top of the piston.

Description

Technical Field

[0001] The utility model relates to a liquid taking device, in particular to a pump head and a spray bottle. Background Art

[0002] A spray bottle is a packaging device that can atomize the pumped liquid and has a wide range of uses in the fields of daily chemicals, medicine, etc. The spray bottle consists of a bottle body and a pump head arranged on the bottle body. A compression spring is arranged in the pump body of the pump head. When the user presses the head cap of the pump body, the space in the pump body is compressed, allowing the liquid to be atomized when passing through the head cap. At the same time, the compression spring is compressed to store elastic potential energy, and this elastic potential energy causes the head cap to reset after the pressure of pressing the head cap is removed, so as to facilitate the next pressing. Repeating this process, a large amount of atomized liquid is pumped out. The problems of the existing spray bottles are as follows. First, during the process of pressing the head cap, as the compression process of the compression spring progresses, the compression spring becomes increasingly difficult to compress. That is, at the beginning of pressing the head cap, the compression spring is prone to deformation, and at this time, the user can press the head cap with a relatively small force. In the later stage of pressing the head cap, the compression spring is difficult to deform, and at this time, the user needs to use a relatively large force to press the head cap, which results in a poor feel when the user presses the head cap. Second, the compression spring needs to be in contact with the liquid for a long time, which will inevitably cause the compression spring to be easily corroded or oxidized, and the harmful substances generated during the corrosion or oxidation of the compression spring will dissolve in the liquid, causing the liquid to deteriorate. Summary of the Utility Model

[0003] An object of the utility model is to provide a pump head and a spray bottle, wherein the top of the elastic element of the pump head is connected to the top of the pump body, the middle part is connected to the middle part of the liquid taking rod, and the bottom abuts against the top of the piston. In this way, when the liquid taking rod moves downward, the part of the elastic element located between the pump body and the liquid taking rod is stretched, and the part of the elastic element located between the liquid taking rod and the piston is compressed. Compared with the compression spring in the prior art that only allows compression, during the entire pressing process, the elastic element of the utility model can provide substantially the same resistance, so that the pump head has a better pressing feel.

[0004] An object of the utility model is to provide a pump head and a spray bottle, wherein the elastic element is located outside the liquid taking cavity of the pump head, which makes the elastic element not contact the liquid, thereby not only avoiding the corrosion or oxidation of the elastic element caused by the liquid contacting the elastic element, but also avoiding the deterioration problem of the liquid caused by contacting the elastic element.

[0005] An object of the utility model is to provide a pump head and a spray bottle, wherein the head cap of the pump head is directly installed on the liquid taking rod, which makes the structure of the pump head of the utility model simpler and the cost lower.

[0006] According to one aspect of the present utility model, the present utility model provides a pump head, which includes:

[0007] A pump body having a pump chamber and a bottom opening and a top opening respectively communicating with the pump chamber;

[0008] A valve body disposed in the pump chamber of the pump body for opening and closing the bottom opening of the pump body;

[0009] A lock cover installed at the top opening of the pump body, and the lock cover has a lock cover perforation;

[0010] A liquid taking rod having a bottom liquid inlet hole with an opening on the side wall of the liquid taking rod and a liquid guiding channel extending upward from the bottom liquid inlet hole to the top surface of the liquid taking rod. The bottom of the liquid taking rod is disposed in the pump chamber of the pump body, and the top extends to the outside of the pump body through the lock cover perforation of the lock cover;

[0011] A piston sleeved on the bottom of the liquid taking rod in a vertically movable manner and disposed in the pump chamber of the pump body in a vertically movable manner for opening and closing the bottom liquid inlet hole of the liquid taking rod. A liquid taking chamber with a variable space is formed between the pump body, the piston and the bottom of the liquid taking rod of the pump head; and

[0012] An elastic element, the top of which is connected to the top of the pump body, the middle is connected to the middle of the liquid taking rod, and the bottom abuts against the top of the piston.

[0013] According to an embodiment of the present utility model, the pump body has a pump body hook platform, the pump body hook platform is disposed on the inner wall of the pump body at the top of the pump body, and the top of the elastic element is hung on the pump body hook platform of the pump body, so that the top of the elastic element is connected to the top of the pump body.

[0014] According to an embodiment of the present utility model, the middle of the liquid taking rod has a rod body hook platform, and the middle of the elastic element is hung on the rod body hook platform of the liquid taking rod, so that the middle of the elastic element is connected to the middle of the liquid taking rod.

[0015] According to an embodiment of the present utility model, the pump body hook platform of the pump body is formed by the inner wall of the pump body shrinking outward.

[0016] According to an embodiment of the present utility model, the rod body hook platform of the liquid taking rod is formed by the middle of the liquid taking rod shrinking inward.

[0017] According to an embodiment of the present utility model, the elastic element includes a top section, a middle section, and a bottom section. The top section and the bottom section are integrally formed at opposite ends of the middle section respectively, and the inner diameter of the top section is larger than that of the middle section, while the inner diameter of the bottom section is smaller than that of the middle section.

[0018] According to an embodiment of the present utility model, the bottom of the liquid extraction rod has an annular limiting groove, the bottom liquid inlet hole communicates with the annular limiting groove, the piston has a positioning protrusion, the positioning protrusion of the piston protrudes into the annular limiting groove of the liquid extraction rod, and the height of the positioning protrusion of the piston is smaller than the height of the annular limiting groove of the liquid extraction rod, so as to allow the piston to move up and down relative to the liquid extraction rod.

[0019] According to an embodiment of the present utility model, the top of the liquid extraction rod has a blocking ring, and the outer diameter of the blocking ring is larger than the inner diameter of the locking cover through hole of the locking cover, so as to allow the locking cover to block the blocking ring of the liquid extraction rod.

[0020] According to an embodiment of the present utility model, the pump head further includes a screw cap and a head cap. The screw cap has a screw cap through hole, the top of the pump body is installed on the screw cap, and the top of the liquid extraction rod extends upward through the screw cap through hole of the screw cap. The head cap has a head cap channel, the head cap is installed on the top of the liquid extraction rod, and the head cap channel of the head cap communicates with the liquid guiding channel of the liquid extraction rod.

[0021] In another aspect of the present utility model, the present utility model provides a spray bottle, which includes a bottle body and a pump head arranged on the bottle body, wherein the pump head includes:

[0022] A pump body having a pump cavity and a bottom opening and a top opening respectively communicating with the pump cavity;

[0023] A valve body arranged in the pump cavity of the pump body for opening and closing the bottom opening of the pump body;

[0024] A locking cover installed on the top opening of the pump body, and the locking cover has a locking cover through hole;

[0025] A liquid extraction rod having a bottom liquid inlet hole with an opening on the side wall of the liquid extraction rod and a liquid guiding channel extending upward from the bottom liquid inlet hole to the top surface of the liquid extraction rod. The bottom of the liquid extraction rod is arranged in the pump cavity of the pump body, and the top extends to the outside of the pump body through the locking cover through hole of the locking cover.

[0026] A piston, which is sleeved on the bottom of the liquid extraction rod in a vertically movable manner and is arranged in the pump chamber of the pump body in a vertically movable manner, is used to open and close the bottom liquid inlet hole of the liquid extraction rod. The pump head forms a liquid extraction chamber with variable volume between the pump body, the piston and the bottom of the liquid extraction rod; and

[0027] An elastic element, which is arranged such that the top of the elastic element is connected to the top of the pump body, the middle part is connected to the middle part of the liquid extraction rod, and the bottom abuts against the top of the piston;

[0028] A screw cap, which has a screw cap perforation. The top of the pump body is installed on the screw cap, and the top of the liquid extraction rod extends upward through the screw cap perforation of the screw cap;

[0029] A head cap, which has a head cap channel. The head cap is installed on the top of the liquid extraction rod, and the head cap channel of the head cap communicates with the liquid guiding channel of the liquid extraction rod. Description of the Drawings

[0030] Figure 1 is a schematic cross-sectional view of a spray bottle according to a preferred embodiment of the present invention.

[0031] Figure 2 is a three-dimensional schematic view of a perspective of a pump head of the spray bottle according to the above preferred embodiment of the present invention.

[0032] Figure 3 is a three-dimensional schematic view of another perspective of the pump head of the spray bottle according to the above preferred embodiment of the present invention.

[0033] Figure 4 is a schematic cross-sectional view of the pump head of the spray bottle according to the above preferred embodiment of the present invention.

[0034] Figure 5 is an exploded schematic view of a perspective of the pump head of the spray bottle according to the above preferred embodiment of the present invention.

[0035] Figure 6 is an exploded schematic view of another perspective of the pump head of the spray bottle according to the above preferred embodiment of the present invention. Detailed Description of the Invention

[0036] Before describing any embodiments of the present invention in detail, it should be understood that the present invention is not limited in its application to the details of the construction and arrangement of the components set forth in the following description or illustrated in the following drawings. The present invention is capable of other embodiments and of being practiced or carried out in various ways. Additionally, it should be understood that the language and terminology used herein are for the purpose of description and should not be regarded as limiting. As used herein, the terms "including" or "having" and their variants are intended to cover the listed items and their equivalents as well as additional items. Unless otherwise specified or limited, the terms "mounted", "connected", "supported" and "coupled" and their variants are used broadly and cover both direct and indirect mounting, connection, support and coupling. Further, "connected" and "coupled" are not limited to physical or mechanical connection or coupling.

[0037] And, in the first aspect, in the disclosure of the present invention, the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. This is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the above terms should not be construed as limiting the present invention; in the second aspect, the term "a" should be understood as "at least one" or "one or more". That is, in one embodiment, the number of an element can be one, while in other embodiments, the number of the element can be multiple. The term "a" should not be construed as limiting the quantity.

[0038] Attached Figures 1 to 6 There is shown a spray bottle according to a preferred embodiment of the present invention, which will be disclosed and described in the following. The spray bottle includes a bottle body 10 and a pump head 20 disposed on the bottle body 10. The bottle body 10 is used for containing liquid, and the pump head 20 is used for pumping out the liquid in the bottle body 10 and atomizing it.

[0039] Specifically, the pump head 20 includes a pump body 21, a valve body 22, a locking cap 23, a liquid taking rod 24, a piston 25, an elastic element 26, a screw cap 27 and a head cap 28.

[0040] The pump body 21 has a pump chamber 211, a bottom opening 212 and a top opening 213, and the bottom opening 212 and the top opening 213 are respectively communicated with the pump chamber 211.

[0041] The valve body 22 is disposed in the pump chamber 211 of the pump body 21. The valve body 22 is used to open and close the bottom opening 212 of the pump body 21. When the valve body 22 opens the bottom opening 212 of the pump body 21, fluid is allowed to enter the pump chamber 211 through the bottom opening 212 of the pump body 21.

[0042] In the Figures 1 to 6 In this specific example of the spray bottle of the present utility model shown in the attached figure, the valve body 22 is a valve disc, which includes a valve body 221, a mounting ring 222 surrounding the valve body 221, and a plurality of extension arms 223 extending between the valve body 221 and the mounting ring 222. The mounting ring 222 is fixedly mounted on the pump body 21. In the natural state, these extension arms 223 cause the valve body 221 to close the bottom opening 212 of the pump body 21 to prevent the fluid in the pump chamber 211 of the pump body 21 from flowing back through the bottom opening 212 of the pump body 21. When the pressure in the pump chamber 211 of the pump body 21 decreases, the valve body 221 moves upward to open the bottom opening 212 of the pump body 21. At this time, fluid is allowed to enter the pump chamber 211 of the pump body 21 through the bottom opening 212 of the pump body 21. At the same time, the valve body 221 pulls the extension arms 223 to cause the extension arms 223 to deform, so that the extension arms 223 have a tendency to pull the valve body 221 back to the initial position. Optionally, in other examples of the spray bottle of the present utility model, the valve body 22 may be a ball valve.

[0043] The lock cap 23 has a lock cap perforation 231, and the lock cap 23 is mounted on the top opening 213 of the pump body 21. In the Figures 1 to 6 In this specific example of the spray bottle of the present utility model shown in the attached figure, the lock cap 23 is snap-fitted on the pump body 21 to prevent the lock cap 23 from falling off the pump body 21. For example, the periphery of the lock cap 23 may have a snap projection. Correspondingly, the pump body 21 has a card slot, and the lock cap 23 is snap-fitted on the pump body 21 in such a way that the snap projection extends into the card slot, so that the lock cap 23 is mounted on the top opening 213 of the pump body 21.

[0044] The liquid extraction rod 24 has a bottom liquid inlet hole 241 and a liquid guiding channel 242. The opening of the bottom liquid inlet hole 241 is located on the side wall of the liquid extraction rod 24. The liquid guiding channel 242 extends upward from the bottom liquid inlet hole 241 to the top surface of the liquid extraction rod 24. The piston 25 is sleeved on the bottom of the liquid extraction rod 24 in a vertically movable manner, and the piston 25 can open and close the bottom liquid inlet hole 241 of the liquid extraction rod 24. The bottom of the liquid extraction rod 24 and the piston 25 are both arranged in the pump cavity 211 of the pump body 21, and the piston 25 can move up and down in the pump cavity 211 of the pump body 21. In this way, the pump head 20 can form a liquid extraction cavity 29 between the pump body 21, the bottom of the liquid extraction rod 24 and the piston 25. As the piston 25 moves up and down in the pump cavity 211 of the pump body 21, the space of the liquid extraction cavity 29 of the pump head 20 can be changed. The top of the liquid extraction rod 24 extends to the outside of the pump body 21 after passing through the lock cover perforation 231 of the lock cover 23. It can be understood that since the lock cover 23 is arranged at the position of the top opening 213 of the pump body 21, the lock cover 23 can prevent the liquid extraction rod 24 and the piston 25 from falling from the pump cavity 211 of the pump body 21.

[0045] The elastic element 26 is arranged such that the top of the elastic element 26 is connected to the top of the pump body 21, the middle part is connected to the middle part of the liquid extraction rod 24, and the bottom abuts against the top of the piston 25. In this way, when the liquid extraction rod 24 and the piston 25 move downward, the part of the elastic element 26 located between the pump body 21 and the liquid extraction rod 24 is stretched and deformed to store elastic potential energy, and the part of the elastic element 26 located between the liquid extraction rod 24 and the piston 25 is compressed and deformed to store elastic potential energy. Thus, during the entire pressing process, the elastic element 26 can provide a substantially constant resistance, so that the pump head 20 has a better pressing feel. Moreover, the elastic element 26 is located outside the liquid extraction cavity 29 of the pump head 20, that is, the elastic element 26 does not contact the liquid. Thereby, it can not only avoid the corrosion or oxidation of the elastic element 26 caused by the liquid contacting the elastic element 26, but also avoid the deterioration problem of the liquid caused by contacting the elastic element 26.

[0046] Reference attached Figure 4 As shown in the figure, the pump body 21 has a pump body hook platform 214. The pump body hook platform 214 is arranged on the inner wall of the pump body 21 at the top of the pump body 21. The top of the elastic element 26 is hung on the pump body hook platform 214 of the pump body 21, so that the top of the elastic element 26 is connected to the top of the pump body 21. Preferably, in the attached Figures 1 to 6In this specific example of the spray bottle of the present utility model shown, the pump body hook platform 214 of the pump body 21 is formed by the inner wall of the pump body 21 shrinking outward.

[0047] Continue to refer to the appendix Figure 4 , a rod body hook platform 243 is provided in the middle of the liquid extraction rod 24, and the middle part of the elastic element 26 is hung on the rod body hook platform 243 of the liquid extraction rod 26, so that the middle part of the elastic element 26 is connected to the middle part of the liquid extraction rod 24. Preferably, in the appendix Figures 1 to 6 In this specific example of the spray bottle of the present utility model shown, the rod body hook platform 243 of the liquid extraction rod 24 is formed by the middle part of the liquid extraction rod 24 shrinking inward.

[0048] Continue to refer to the appendix Figures 4 to 6 , the elastic element 26 includes a top section 261, a middle section 262 and a bottom section 263. The top section 261 and the bottom section 263 are integrally formed at opposite ends of the middle section 262 respectively, and the inner diameter dimension of the top section 261 is larger than the inner diameter dimension of the middle section 262. In this way, on the basis of not affecting the deformation of the middle section 262, the top section 261 can be hung on the pump body hook platform 214 of the pump body 21. The inner diameter dimension of the bottom section 263 is smaller than the inner diameter dimension of the middle section 262. In this way, on the basis of not affecting the deformation of the middle section 262 and the bottom section 263, the connection position of the middle section 262 and the bottom section 263 can be hung on the rod body hook platform 243 of the liquid extraction rod 24.

[0049] In the appendix Figures 1 to 6 In this specific example of the spray bottle of the present utility model shown, the elastic element 26 can be formed by winding a complete metal wire. In other examples of the spray bottle of the present utility model, the elastic element 26 can also be an injection molded part, so that the spray bottle can be all-plastic.

[0050] Continue to refer to the appendix Figures 4 to 6 , the bottom of the liquid extraction rod 24 has an annular limiting groove 244, the bottom liquid inlet hole 241 communicates with the annular limiting groove 244, the piston 25 has a positioning protrusion 251, the positioning protrusion 251 of the piston 25 protrudes into the annular limiting groove 244 of the liquid extraction rod 24, and the height dimension of the positioning protrusion 251 of the piston 25 is smaller than the height dimension of the annular limiting groove 244 of the liquid extraction rod 24 to allow the piston 25 to move up and down relative to the liquid extraction rod 24. In this way, when pumping the fluid in the bottle body 10 through the pump head 20, the piston 25 can be prevented from falling off the liquid extraction rod 24.

[0051] Continue to refer to the appendixFigures 4 to 6 At the top of the liquid extraction rod 24, there is a blocking ring 245. The outer diameter of the blocking ring 245 is larger than the inner diameter of the lid perforation 231 of the lock lid 23, so as to allow the lock lid 23 to block the blocking ring 245 of the liquid extraction rod 24. In this way, the lock lid 23 can limit the upward movement distance of the liquid extraction rod 24.

[0052] The screw cap 27 has a screw cap perforation 271. The top of the pump body 21 is installed on the screw cap 27. The top of the liquid extraction rod 24 extends upward through the screw cap perforation 271 of the screw cap 27. Wherein the screw cap 27 is used to install the pump head 20 on the bottle body 10. In the Figures 1 to 6 In this specific example of the spray bottle of the present utility model shown, the top of the pump body 21 is clamped on the screw cap 27 to reliably install the pump body 21 on the top of the screw cap 27. For example, the top of the pump body 21 has a clamping protrusion. Correspondingly, the screw cap 27 has a clamping groove. The pump body 21 is clamped on the screw cap 27 in such a way that the clamping protrusion extends into the clamping groove, so that the top of the pump body 21 is clamped on the screw cap 27.

[0053] The head cap 28 has a head cap channel 281. The head cap 28 is installed on the top of the liquid extraction rod 24, and the head cap channel 281 of the head cap 28 communicates with the liquid guiding channel 242 of the liquid extraction rod 24. In this way, the pumped fluid can enter the head cap channel 281 of the head cap 28 through the liquid guiding channel 242 of the liquid extraction rod 24 and be sprayed out after being atomized by the head cap 28 to form a spray.

[0054] Specifically, the head cap 28 includes a pressing cover 282 and a spray sheet 283 arranged on the pressing cover 282. The head cap channel 281 of the head cap 28 is formed in the pressing cover 282. The spray sheet 283 is located at the end of the head cap channel 281. Wherein the top of the liquid extraction rod 24 is inserted into the head cap channel 281 of the head cap 28 to install the pressing cover 282 on the liquid extraction rod 24 and make the liquid guiding channel 242 of the liquid extraction rod 24 communicate with the head cap channel 281 of the head cap 28.

[0055] In the spray bottle of the present utility model, the piston 25 is installed at the bottom of the liquid extraction rod 24, and the head cap 28 is installed at the top, which makes the structure of the pump head 20 of the present utility model simpler and the cost lower.

[0056] Preferably, the screw cap 27 has an upwardly extending annular wall 272 and a limiting cavity 273 surrounded by the annular wall 272. When the head cap 28 is not pressed, the bottom of the pressing cap 282 of the head cap 28 extends into the limiting cavity 273 surrounded by the annular wall 272 of the screw cap 27. In this way, not only can the aesthetics of the pump head 20 be increased, but also when the head cap 28 is pressed, the screw cap 27 restricts the moving direction of the head cap 28 to the height direction, preventing the head cap 28 from moving laterally or tilting.

[0057] Back to the appendix Figure 1 Furthermore, the spray bottle further includes a tube body 30. The top of the tube body 30 is installed on the pump body 21, and the bottom of the tube body 30 extends into the bottom of the bottle body 10.

[0058] The usage process of the spray bottle of the present utility model is as follows: When initially pressing down the head cap 28, the head cap 28 and the liquid extraction rod 24 move downward. Due to the large frictional force between the piston 25 and the pump body 21, the position of the piston 25 remains unchanged. That is, the position of the liquid extraction rod 24 changes relative to the piston 25, allowing the positioning protrusion 251 of the piston 25 to move to the top of the annular limiting groove 244 of the liquid extraction rod 24 to open the opening of the bottom liquid inlet hole 241 of the liquid extraction rod 24. During this process, the part of the elastic element 26 located between the pump body 21 and the liquid extraction rod 24 is stretched, and the part of the elastic element 26 located between the liquid extraction rod 24 and the piston 25 is compressed. The valve body 22 remains in the position of closing the bottom opening 212 of the pump body 21.

[0059] Then, continue to press down the head cap 28. The head cap 28, the liquid extraction rod 24, and the piston 25 move downward to compress the space of the liquid extraction cavity 29, increasing the pressure in the liquid extraction cavity 29. At this time, the fluid in the liquid extraction cavity 29 enters the head cap channel 281 of the head cap 28 through the bottom liquid inlet hole 241 of the liquid extraction rod 24 and the liquid guiding flow channel 242, and is atomized and ejected by the head cap 28. During this process, the part of the elastic element 26 located between the pump body 21 and the liquid extraction rod 24 is continuously stretched, and the part of the elastic element 26 located between the liquid extraction rod 24 and the piston 25 is continuously compressed. The valve body 22 remains in the position of closing the bottom opening 212 of the pump body 21.

[0060] In the first stage after releasing the pressing of the head cap 28, the elastic element 26 drives the head cap 28 and the liquid taking rod 24 to move upward during the process of restoring the initial state. Due to the large frictional force between the piston 25 and the pump body 21, the position of the piston 25 remains stationary, that is, the position of the liquid taking rod 24 changes relative to the piston 25 to allow the positioning protrusion 251 of the piston 25 to move to the bottom of the annular limiting groove 244 of the liquid taking rod 24 to close the opening of the bottom liquid inlet hole 241 of the liquid taking rod 24. In the second stage after releasing the pressing of the head cap 28, the elastic element 26 drives the head cap 28, the liquid taking rod 24 and the piston 25 to move upward during the process of restoring the initial state to increase the space of the liquid taking cavity 29 and increase the pressure in the liquid taking cavity 29. At this time, the valve body 22 opens the bottom opening 212 of the pump body 21 to allow the liquid in the bottle body 10 to enter the liquid taking cavity 29. After the pressure in the liquid taking cavity 29 is consistent with the pressure in the bottle body 10, the valve body 22 closes the bottom opening 212 of the pump body 21 again.

[0061] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the drawings are only examples and do not limit the present invention. The object of the present invention has been completely and effectively achieved. The function and structural principle of the present invention have been shown and described in the embodiments. Without departing from the principle, any deformation or modification of the embodiments of the present invention is possible.

Claims

1. Pump head, characterized in that, Comprising: A pump body having a pump chamber and a bottom opening and a top opening respectively communicating with the pump chamber; A valve body disposed in the pump chamber of the pump body for opening and closing the bottom opening of the pump body; A lock cover installed at the top opening of the pump body, and the lock cover has a lock cover perforation; A liquid taking rod having a bottom liquid inlet hole opening on the side wall of the liquid taking rod and a liquid guiding channel extending upward from the bottom liquid inlet hole to the top surface of the liquid taking rod, the bottom of the liquid taking rod is disposed in the pump chamber of the pump body, and the top extends to the outside of the pump body through the lock cover perforation of the lock cover; A piston slidably sleeved on the bottom of the liquid taking rod and slidably disposed in the pump chamber of the pump body for opening and closing the bottom liquid inlet hole of the liquid taking rod, and the pump head forms a liquid taking chamber with variable space between the pump body, the piston and the bottom of the liquid taking rod; And An elastic element, the top of which is connected to the top of the pump body, the middle is connected to the middle of the liquid taking rod, and the bottom abuts against the top of the piston.

2. The pump head according to claim 1, wherein the pump body has a pump body hook platform, the pump body hook platform is disposed on the inner wall of the pump body at the top of the pump body, and the top of the elastic element is hung on the pump body hook platform of the pump body, so that the top of the elastic element is connected to the top of the pump body.

3. The pump head according to claim 2, wherein the middle of the liquid taking rod has a rod body hook platform, and the middle of the elastic element is hung on the rod body hook platform of the liquid taking rod, so that the middle of the elastic element is connected to the middle of the liquid taking rod.

4. The pump head according to claim 2, wherein the pump body hook platform of the pump body is formed by shrinking the inner wall of the pump body.

5. The pump head according to claim 3, wherein the rod body hook platform of the liquid taking rod is formed by shrinking the middle of the liquid taking rod.

6. The pump head according to claim 3, wherein the elastic element includes a top section, a middle section and a bottom section, the top section and the bottom section are integrally formed at opposite ends of the middle section respectively, and the inner diameter dimension of the top section is larger than the inner diameter dimension of the middle section, and the inner diameter dimension of the bottom section is smaller than the inner diameter dimension of the middle section.

7. The pump head according to any one of claims 1 to 6, wherein the bottom of the liquid taking rod has an annular limiting groove, the bottom liquid inlet hole communicates with the annular limiting groove, the piston has a positioning protrusion, the positioning protrusion of the piston protrudes into the annular limiting groove of the liquid taking rod, and the height dimension of the positioning protrusion of the piston is smaller than the height dimension of the annular limiting groove of the liquid taking rod to allow the piston to move up and down relative to the liquid taking rod.

8. The pump head according to any one of claims 1 to 6, wherein the top of the liquid taking rod has a blocking ring, and the outer diameter dimension of the blocking ring is larger than the inner diameter dimension of the lock cover perforation of the lock cover to allow the lock cover to block the blocking ring of the liquid taking rod.

9. The pump head according to any one of claims 1 to 6, wherein the pump head further comprises a screw cap and a head cap, wherein the screw cap has a screw cap perforation, the top of the pump body is mounted on the screw cap, and the top of the liquid extraction rod extends upward through the screw cap perforation of the screw cap, wherein the head cap has a head cap channel, the head cap is mounted on the top of the liquid extraction rod, and the head cap channel of the head cap communicates with the liquid guide channel of the liquid extraction rod.

10. Spray bottle, characterized in that, Comprising a bottle body and a pump head disposed on the bottle body, wherein the pump head comprises: A pump body having a pump chamber and a bottom opening and a top opening respectively communicating with the pump chamber; A valve body disposed in the pump chamber of the pump body for opening and closing the bottom opening of the pump body; A lock cap mounted on the top opening of the pump body, and the lock cap has a lock cap perforation; A liquid extraction rod having a bottom liquid inlet hole opening on the side wall of the liquid extraction rod and a liquid guide channel extending upward from the bottom liquid inlet hole to the top surface of the liquid extraction rod, the bottom of the liquid extraction rod is disposed in the pump chamber of the pump body, and the top extends to the outside of the pump body through the lock cap perforation of the lock cap; A piston movably sleeved on the bottom of the liquid extraction rod and movably disposed in the pump chamber of the pump body for opening and closing the bottom liquid inlet hole of the liquid extraction rod, and the pump head forms a liquid extraction chamber with variable space between the pump body, the piston and the bottom of the liquid extraction rod; and An elastic element, the top of which is connected to the top of the pump body, the middle part is connected to the middle part of the liquid extraction rod, and the bottom abuts against the top of the piston; A screw cap having a screw cap perforation, the top of the pump body is mounted on the screw cap, and the top of the liquid extraction rod extends upward through the screw cap perforation of the screw cap; A head cap having a head cap channel, the head cap is mounted on the top of the liquid extraction rod, and the head cap channel of the head cap communicates with the liquid guide channel of the liquid extraction rod.

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