A freeze-dried powder pressing pump bottle

Abstract

The present invention belongs to the technical field of packaging containers, and particularly relates to a freeze-dried powder pressing pump bottle, which comprises: a bottle body, with a bottle mouth provided at the upper end of the bottle body; a pressing pump head, installed on the bottle mouth, and the pressing pump head includes a base, a liquid suction pipe, a compression chamber, a piston, a liquid discharge pipe, a pressing head and a spring; a first one-way valve is provided in the liquid suction pipe, and a second one-way valve is provided in the liquid discharge pipe; an exhaust hole and a closing unit are provided on the liquid discharge pipe. Before the pressing head of the present invention is pressed for the first time, the exhaust hole can communicate the inner cavity of the liquid discharge pipe with the atmosphere. Therefore, during the first pressing process, negative pressure cannot be generated in the compression chamber, and the solvent in the bottle body will not be sucked into the compression chamber, thus avoiding solvent loss. After the pressing head is pressed for the first time, the exhaust hole will be blocked by the closing unit, and then when the pressing head is pressed again, the normal suction function can be realized.

Description

Technical Field

[0001] The invention belongs to the technical field of packaging containers, and particularly relates to a freeze-dried powder pressure pump bottle. Background Art

[0002] In the prior art, freeze-dried powder skin care essences are generally packaged in ampoules or pump bottles, wherein the pump bottle has two chambers, one of which is used to hold the freeze-dried powder, and the other is used to hold the solvent for the freeze-dried powder. Before use, the user needs to press the pressure head once to make the freeze-dried powder fall into the solvent. After the two are evenly mixed, press the pressure head again to squeeze out the essence. However, the defect of the prior art is that when the user presses the pressure head for the first time, although it is not enough to squeeze out the solvent, some solvent will still be sucked into the pump head. This part of the solvent cannot merge with the freeze-dried powder, which will cause the amount of solvent in the bottle to decrease, and then cause the ratio of freeze-dried powder to solvent to deviate, affecting the use effect. Summary of the Invention

[0003] In view of the above-mentioned shortcomings of the prior art, the object of the present invention is to provide a freeze-dried powder pump bottle that can reduce solvent loss.

[0004] To achieve the above-mentioned and other related purposes, the present invention provides a freeze-dried powder pump bottle, comprising:

[0005] A bottle body, wherein the upper end of the bottle body is provided with a bottle mouth;

[0006] A pressure pump head is installed at the bottle mouth, and the pressure pump head includes a base, a suction tube, a compression chamber, a piston, a discharge tube, a pressure head and a spring;

[0007] The base is detachably mounted on the bottle mouth, the compression chamber is mounted below the base, the suction tube is in communication with the compression chamber, the piston is slidably disposed in the compression chamber, the discharge tube is connected to the piston, the lower end of the discharge tube is in communication with the compression chamber, the upper end of the discharge tube extends to the top of the base, the pressure head is mounted on the top of the discharge tube, and a discharge hole in communication with the discharge tube is provided in the pressure head; the spring is assembled so that its elastic force can drive the pressure head, the discharge tube, and the piston upward relative to the base;

[0008] A first one-way valve is provided in the liquid suction pipe, and a second one-way valve is provided in the liquid discharge pipe;

[0009] The drain tube is provided with an exhaust hole and a sealing unit, and the exhaust hole and the sealing unit are assembled so that before the pressure head is pressed for the first time, the exhaust hole can connect the inner cavity of the drain tube with the atmosphere, and after the pressure head is pressed for the first time, the sealing unit can close the exhaust hole.

[0010] In an alternative embodiment of the present invention, an annular groove is provided on the outer wall of the drain pipe, the exhaust hole is opened in the annular groove, and the exhaust hole penetrates through the pipe wall of the drain pipe; the closing unit includes an elastic sealing ring, and the elastic sealing ring is assembled such that before the pressing head is first pressed, the elastic sealing ring is in an area outside the annular groove, and after the pressing head is first pressed, the elastic sealing ring can move into the annular groove to close the exhaust hole.

[0011] In an alternative embodiment of the present invention, a first tensioning portion is provided on the outer wall of the drain pipe, a second tensioning portion is provided on the base, and a plurality of the first tensioning portions and the second tensioning portions are arranged at intervals along the circumferential direction of the drain pipe, and each of the first tensioning portions and each of the second tensioning portions are arranged alternately in the circumferential direction of the drain pipe; before the pressing head is first pressed, the elastic sealing ring is tensioned on each of the first tensioning portions, a first stop wall is provided at the lower end of the second tensioning portion, and when the pressing head is first pressed down, the elastic sealing ring on the first tensioning portion will be blocked by the first stop wall and transferred to the second tensioning portion; a second stop wall is provided at the upper end of the first tensioning portion, and the second stop wall is flush with the lower edge of the annular groove. When the pressed pressing head is reset upward under the action of the spring, the elastic sealing ring on the second tensioning portion will be pushed by the second stop wall and separated from the second tensioning portion, and will be sleeved in the annular groove under its own elastic action.

[0012] In an alternative embodiment of the present invention, the distance that the first tensioning portion protrudes in the radial direction of the drain pipe is greater than the distance that the second tensioning portion protrudes in the radial direction of the drain pipe.

[0013] In an alternative embodiment of the present invention, the second tensioning portion is arranged at an interval from the outer wall of the drain pipe, and the distance therebetween is greater than the distance that the elastic sealing ring protrudes from the outer wall of the drain pipe after the elastic sealing ring is sleeved in the annular groove.

[0014] In an alternative embodiment of the present invention, one end of the spring abuts against the lower end of the pressing head, and the other end of the spring abuts against the second tensioning portion.

[0015] In an optional embodiment of the present invention, a sleeve is further provided under the base, and the sleeve is sleeved on the outside of the compression chamber and spaced apart from the outer wall of the compression chamber. The interlayer between the sleeve and the compression chamber constitutes a first chamber for accommodating freeze-dried powder, and a plug is provided at the lower end of the first chamber. The inner cavity of the bottle body below the plug constitutes a second chamber for accommodating the solvent; a force transmission medium is provided between the plug and the piston, and the force transmission medium is assembled so that when the pressure head is pressed for the first time, the piston can push the plug out of the first chamber through the force transmission medium.

[0016] In an optional embodiment of the present invention, an extension tube is provided at the lower end of the compression chamber, the suction tube is slidably arranged in the extension tube, the lower end of the suction tube is fixedly connected to the block, the suction tube constitutes the force transmission medium, and before the pressure head is pressed for the first time, the upper end of the suction tube protrudes into the compression chamber.

[0017] In an optional embodiment of the present invention, a movable bottom cover is provided at the bottom of the bottle body, and the movable bottom cover is slidably and sealingly connected to the inner wall of the bottle body.

[0018] In an optional embodiment of the present invention, an upper cover is further provided at the upper end of the pressure pump head, and a convex ring is provided at the upper end of the base, and the upper cover and the convex ring form a plug-in fit.

[0019] The technical effect of the present invention is that before the pressure head of the present invention is pressed for the first time, the exhaust hole can connect the inner cavity of the discharge tube with the atmosphere. Therefore, during the first pressing process, no negative pressure can be generated in the compression chamber, and the solvent in the bottle body will not be sucked into the compression chamber, thereby avoiding solvent loss. After the pressure head is pressed for the first time, the exhaust hole will be blocked by the sealing unit, and the normal suction function can be achieved when the pressure head is pressed again. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a partial exploded view of a freeze-dried powder pump bottle provided by an embodiment of the present invention;

[0021] Figure 2 yes Figure 1 I local enlarged view;

[0022] Figure 3 This is a top view of the freeze-dried powder pump bottle provided by an embodiment of the present invention with the upper cover removed;

[0023] Figure 4 The freeze-dried powder pump bottle provided by the embodiment of the present invention is Figure 3 A cross-sectional view of one of the states in the direction AA;

[0024] Figure 5 yesFigure 4 Partial enlarged view of II;

[0025] Figure 6 is a cross-sectional view of another state of the freeze-dried powder pressing pump bottle provided by the embodiment of the present invention in the direction shown by A-A in Figure 3 ;

[0026] Figure 7 is Figure 6 Partial enlarged view of III;

[0027] Figure 8 is a cross-sectional view of yet another state of the freeze-dried powder pressing pump bottle provided by the embodiment of the present invention in the direction shown by A-A in Figure 3 ;

[0028] Figure 9 is Figure 8 Partial enlarged view of IV. Specific embodiments

[0029] The following illustrates the embodiments of the present invention through specific examples. Those skilled in the art can easily understand the other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0030] The diagrams provided in the following embodiments only illustrate the basic concept of the present invention in a schematic manner. Therefore, only the components related to the present invention are shown in the diagrams, rather than drawn according to the number, shape, and size of the components in actual implementation. The type, quantity, and proportion of each component in actual implementation can be arbitrarily changed, and the layout type of the components may also be more complex.

[0031] <000...Please refer to Figures 1 - 9As shown, the freeze-dried powder pressing pump bottle provided by the present invention can be used for packaging freeze-dried powder essence, for example. It has two chambers, one chamber for containing the freeze-dried powder and the other chamber for containing the solvent of the freeze-dried powder. When the user presses for the first time, the two chambers can be connected to each other, so that the freeze-dried powder and the solvent are mixed. In the double-chamber pressing pump bottle in the prior art, when pressing for the first time, part of the solvent enters the pump body, and this part of the solvent cannot be mixed with the freeze-dried powder, which will lead to a deviation in the ratio of the freeze-dried powder to the solvent, affecting the use effect and causing waste of the solvent. For this reason, the present invention provides an exhaust hole 242 and a sealing unit in the pressing pump head. When pressing for the first time, the exhaust hole 242 is connected to the atmosphere, so that no negative pressure can be generated in the pump head, thereby avoiding the solvent from entering the pump head. After the first pressing is completed, the sealing unit can block the exhaust hole 242, thereby ensuring that the pressing pump head can perform the suction action normally, without causing solvent loss during the use process, and ensuring the mixing ratio accuracy of the freeze-dried powder and the solvent.

[0032] Please refer to Figures 1 - 9 As shown, the technical solution of the present invention will be described in detail below in conjunction with specific embodiments:

[0033] Please refer to Figures 4 - 9 As shown, the freeze-dried powder pressing pump bottle provided by the embodiment of the present invention includes a bottle body 10 and a pressing pump head; the upper end of the bottle body 10 is provided with a bottle mouth; the pressing pump head is installed on the bottle mouth, and the pressing pump head includes a base 20, a liquid suction pipe 21, a compression chamber 22, a piston 23, a liquid discharge pipe 24, a pressing head 25 and a spring 26; the base 20 is installed on the bottle mouth in a detachable manner, the compression chamber 22 is installed below the base 20, the liquid suction pipe 21 is communicated with the compression chamber 22, the piston 23 is slidably arranged in the compression chamber 22, the liquid discharge pipe 24 is connected to the piston 23, the lower end of the liquid discharge pipe 24 is communicated with the compression chamber 22, the upper end of the liquid discharge pipe 24 penetrates above the base 20, the pressing head 25 is installed at the top end of the liquid discharge pipe 24, and a liquid discharge hole 251 communicated with the liquid discharge pipe 24 is provided in the pressing head 25; the spring 26 is assembled so that its elastic force can drive the pressing head 25, the liquid discharge pipe 24 and the piston 23 to move upward relative to the base 20; a first one-way valve 211 is provided in the liquid suction pipe 21, and a second one-way valve 241 is provided in the liquid discharge pipe 24; it should be understood that the specific working principle of the pressing pump head of the present invention is similar to that of the prior art, so this patent will not be described in detail.

[0034] Please refer to Figure 5 、 7As shown in FIGS. 8 and 9, an exhaust hole 242 and a closing unit are provided on the drain pipe 24. The exhaust hole 242 and the closing unit are assembled such that before the pressing head 25 is pressed for the first time, the exhaust hole 242 can connect the inner cavity of the drain pipe 24 to the atmosphere, and after the pressing head 25 is pressed for the first time, the closing unit can close the exhaust hole 242.

[0035] It should be understood that since the exhaust hole 242 can connect the inner cavity of the drain pipe 24 to the atmosphere before the pressing head 25 is pressed for the first time, during the first pressing process, no negative pressure can be generated in the compression cavity 22, so the solvent in the bottle body 10 will not be sucked into the compression cavity 22, thereby avoiding solvent loss. After the pressing head 25 is pressed for the first time, the exhaust hole 242 will be blocked by the closing unit. Thereafter, when the pressing head 25 is pressed again, the normal suction function can be achieved.

[0036] Please refer to Figure 5 、 7 、9, in an optional embodiment of the present invention, an annular groove 243 is provided on the outer wall of the drain pipe 24. The exhaust hole 242 is opened in the annular groove 243, and the exhaust hole 242 penetrates through the pipe wall of the drain pipe 24; the closing unit includes an elastic sealing ring 29. The elastic sealing ring 29 is assembled such that before the pressing head 25 is pressed for the first time, the elastic sealing ring 29 is in an area outside the annular groove 243, and after the pressing head 25 is pressed for the first time, the elastic sealing ring 29 can move into the annular groove 243 to close the exhaust hole 242.

[0037] Specifically, as Figure 2 、 5As shown in Figures 7 and 9, a first tensioning portion 244 is provided on the outer wall of the drain pipe 24, and a second tensioning portion 202 is provided on the base 20. A plurality of the first tensioning portions 244 and the second tensioning portions 202 are arranged at intervals along the circumference of the drain pipe 24, and each of the first tensioning portions 244 and each of the second tensioning portions 202 are staggered in the circumference of the drain pipe 24; before the pressure head 25 is pressed for the first time, the elastic sealing ring 29 is tensioned on each of the first tensioning portions 244, and a first retaining wall 203 is provided at the lower end of the second tensioning portion 202. When the pressure head 25 is pressed for the first time The elastic sealing ring 29 on the first tensioning portion 244 is transferred to the second tensioning portion 202 under the obstruction of the first retaining wall 203. A second retaining wall 245 is provided at the upper end of the first tensioning portion 244. The second retaining wall 245 is flush with the lower edge of the annular groove 243. When the first pressed pressing head 25 is reset upward under the action of the spring 26, the elastic sealing ring 29 on the second tensioning portion 202 is separated from the second tensioning portion 202 under the pushing action of the second retaining wall 245 and is sleeved in the annular groove 243 under its own elastic action. The distance that the first tensioning portion 244 protrudes in the radial direction of the discharge pipe 24 is greater than the distance that the second tensioning portion 202 protrudes in the radial direction of the discharge pipe 24.

[0038] In the above embodiment, the transfer process of the elastic sealing ring 29 is as follows: Figure 5 As shown, when the pump bottle leaves the factory, the elastic sealing ring 29 is tensioned on the first tensioning portion 244. When the user presses the pressure head 25 for the first time, the discharge pipe 24 and the piston 23 move downward. Since the first tensioning portion 244 is fixed to the outer wall of the discharge pipe 24, the first tensioning portion 244 also moves downward synchronously. At this time, the elastic sealing ring 29 is intercepted on the second tensioning portion 202 by the action of the first retaining wall 203, as shown in FIG. Figure 7 As shown; when the user releases the pressure head 25, the pressure head 25 drives the discharge pipe 24 and the piston 23 upward under the action of the spring 26. At this time, the elastic sealing ring 29 is just in the movement path of the second retaining wall 245. The second retaining wall 245 will push the elastic sealing ring 29 to move upward along the second tensioning part 202 until it is separated from the second tensioning part 202. After the elastic sealing ring 29 is separated from the second tensioning part 202, it will be sleeved in the annular groove 243 under the action of its own elastic force, thereby achieving the blocking of the exhaust hole 242, as shown in FIG. Figure 9 shown.

[0039] See also Figure 9As shown, in an alternative embodiment of the present invention, the second tensioning portion 202 is spaced from the outer wall of the drain pipe 24, and the distance therebetween is greater than the distance by which the elastic sealing ring 29 protrudes from the outer wall of the drain pipe 24 after the elastic sealing ring 29 is sleeved in the annular groove 243. This ensures that when the pressing head 25 is subsequently pressed, the second tensioning portion 202 will not interfere with the elastic sealing ring 29.

[0040] Please refer to Figure 4 、 6 、8 as shown, in an alternative embodiment of the present invention, one end of the spring 26 abuts against the lower end of the pressing head 25, and the other end of the spring 26 abuts against the second tensioning portion 202.

[0041] Please refer to Figure 4 、 6 、8 as shown, in order to achieve a double-chamber environment within the bottle body 10, in an alternative embodiment of the present invention, a sleeve 27 is further provided below the base 20. The sleeve 27 is sleeved outside the compression chamber 22 and is spaced from the outer wall of the compression chamber 22. The interlayer between the sleeve 27 and the compression chamber 22 forms a first chamber 101 for accommodating the freeze-dried powder. A plug 28 is provided at the lower end of the first chamber 101. The inner cavity of the bottle body 10 below the plug 28 forms a second chamber 102 for accommodating the solvent; a force-transmitting medium is provided between the plug 28 and the piston 23. The force-transmitting medium is configured such that when the pressing head 25 is first pressed, the piston 23 can push the plug 28 out of the first chamber 101 through the force-transmitting medium. An extension pipe is provided at the lower end of the compression chamber 22. The liquid suction pipe 21 is slidably provided within the extension pipe. The lower end of the liquid suction pipe 21 is fixedly connected to the plug 28. The liquid suction pipe 21 constitutes the force-transmitting medium. Before the pressing head 25 is first pressed, the upper end of the liquid suction pipe 21 protrudes into the compression chamber 22.

[0042] It should be understood that before the user first presses the pressing head 25, the plug 28 separates the first chamber 101 and the second chamber 102, as Figure 5 shown; when the user first presses the pressing head 25, the pressing head 25 pushes the liquid suction pipe 21 and the plug 28 downward through the drain pipe 24 and the piston 23, causing the plug 28 to move out of the first chamber 101, as Figure 7 shown; when the user releases the pressing head 25, the drain pipe 24 and the piston 23 reset under the action of the spring 26. At this time, the liquid suction pipe 21 will remain in the low position due to the action of friction, thereby keeping the first chamber 101 and the second chamber 102 in a connected state to facilitate the mixing of the freeze-dried powder and the solvent.

[0043] Please refer to Figure 4 、 6, as shown in FIGS. 8, in an optional embodiment of the present invention, the bottom of the bottle body 10 is provided with a movable bottom cover 11, and the movable bottom cover 11 is slidably and sealingly connected to the inner wall of the bottle body 10. It should be understood that in order to ensure the sealed storage environment of the freeze-dried powder, the inner cavity of the bottle body 10 is completely sealed. Without the design of the movable bottom cover 11, during the use process by the user, as the essence liquid is discharged, the negative pressure inside the bottle body 10 will gradually increase, eventually making it difficult to discharge the essence liquid. Therefore, the present invention provides a movable bottom cover 11 at the bottom of the bottle body 10, and the movable bottom cover 11 can gradually move upward with the change of the pressure difference, ensuring that the pressure inside and outside the bottle body 10 is always kept consistent, and thus ensuring that the essence liquid can be fully discharged.

[0044] Please refer to Figure 1 , as shown in FIGS., in an optional embodiment of the present invention, the upper end of the pressure pump head is further provided with an upper cover 30, and the upper end of the base 20 is provided with a convex ring 201. The upper cover 30 and the convex ring 201 form a plug-in fit to facilitate the protection of the pressure pump head.

[0045] In summary, before the pressing head 25 of the present invention is first pressed, the exhaust hole 242 can connect the inner cavity of the liquid discharge pipe 24 with the atmosphere. Therefore, during the first pressing process, no negative pressure can be generated in the compression cavity 22, and the solvent in the bottle body 10 will not be sucked into the compression cavity 22, thus avoiding solvent loss. When the pressing head 25 is pressed for the first time, the exhaust hole 242 will be blocked by the blocking unit. After that, when the pressing head 25 is pressed again, the normal suction function can be realized; the present invention provides a movable bottom cover 11 at the bottom of the bottle body 10, and the movable bottom cover 11 can gradually move upward with the change of the pressure difference, ensuring that the pressure inside and outside the bottle body 10 is always kept consistent, and thus ensuring that the essence liquid can be fully discharged.

[0046] The above embodiments are only illustrative of the principles and effects of the present invention, and are not used to limit the present invention. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed by the present invention should still be covered by the claims of the present invention.

[0047] In the description herein, numerous specific details are provided, such as examples of components and / or methods, to provide a complete understanding of the embodiments of the present invention. However, those skilled in the art will recognize that the embodiments of the present invention can be practiced without one or more of the specific details or by other devices, systems, components, methods, parts, materials, parts, etc. In other cases, well-known structures, materials, or operations are not specifically shown or described in detail to avoid obscuring aspects of the embodiments of the present invention.

[0048] Throughout the specification, the mention of "an embodiment", "embodiments" or "specific embodiments" means that the particular features, structures or characteristics described in connection with the embodiments are included in at least one embodiment of the present invention and not necessarily in all embodiments. Thus, the appearances of the phrases "in an embodiment", "in embodiments" or "in specific embodiments" in various places throughout the specification are not necessarily referring to the same embodiment. In addition, the particular features, structures or characteristics of any specific embodiment of the present invention may be combined with one or more other embodiments in any suitable manner. It should be understood that other variations and modifications of the embodiments of the invention described and shown herein may be made in accordance with the teachings herein and will be considered part of the spirit and scope of the present invention.

[0049] It should also be understood that one or more of the elements shown in the figures may be implemented in a more separated or more integrated manner, or even removed in some cases because they are inoperable or provided because they may be useful for a particular application.

[0050] In addition, unless otherwise explicitly specified, any marked arrows in the figures should be considered exemplary only and not restrictive. Further, unless otherwise indicated, the term "or" as used herein generally intends to mean "and / or". In cases where the term is foreseen as being unclear due to the ability to provide separation or combination, the combination of components or steps will also be considered to have been specified.

[0051] As used in the description herein and throughout the claims below, unless otherwise indicated, "a", and "the" include plural references. Also, as used in the description herein and throughout the claims below, unless otherwise indicated, the meaning of "in" includes "in" and "on".

[0052] The above description of the embodiments shown of the present invention (including what is described in the abstract of the specification) is not intended to be exhaustive or to limit the present invention to the precise forms disclosed herein. Although specific embodiments of the present invention and examples of the present invention are described herein only for illustrative purposes, various equivalent modifications are possible within the spirit and scope of the present invention as will be recognized and understood by those skilled in the art. As noted, these modifications can be made to the present invention in accordance with the above description of the embodiments of the present invention and these modifications will be within the spirit and scope of the present invention.

[0053] The present disclosure has generally described systems and methods to facilitate an understanding of the details of the present invention. Additionally, various specific details have been given to provide a general understanding of embodiments of the present invention. However, those skilled in the relevant art will recognize that embodiments of the present invention may be practiced without one or more of the specific details, or with other devices, systems, components, methods, assemblies, materials, parts, etc. In other instances, well-known structures, materials, and / or operations have not been shown or described in detail to avoid obscuring aspects of the embodiments of the present invention.

[0054] Thus, while the present invention has been described herein with reference to its specific embodiments, modifications, various changes, and substitutions are also within the above disclosure, and it should be understood that in some instances, some features of the present invention may be employed without corresponding use of other features, without departing from the scope and spirit of the claimed invention. Accordingly, many modifications may be made to adapt a particular environment or material to the essential scope and spirit of the present invention. The present invention is not intended to be limited to the specific terms and / or the specific embodiments disclosed as the best mode contemplated for carrying out the present invention, but the present invention will include any and all embodiments and equivalents falling within the scope of the appended claims. Thus, the scope of the present invention will be determined only by the appended claims.

Claims

1. A freeze-dried powder pump bottle, characterized in that: include: A bottle body, wherein the upper end of the bottle body is provided with a bottle mouth; A pressure pump head is installed at the bottle mouth, and the pressure pump head includes a base, a suction tube, a compression chamber, a piston, a discharge tube, a pressure head and a spring; The base is detachably mounted on the bottle mouth, the compression chamber is mounted below the base, the suction tube is in communication with the compression chamber, the piston is slidably disposed in the compression chamber, the discharge tube is connected to the piston, the lower end of the discharge tube is in communication with the compression chamber, the upper end of the discharge tube extends to the top of the base, the pressure head is mounted on the top of the discharge tube, and a discharge hole in communication with the discharge tube is provided in the pressure head; the spring is assembled so that its elastic force can drive the pressure head, the discharge tube, and the piston upward relative to the base; A first one-way valve is provided in the liquid suction pipe, and a second one-way valve is provided in the liquid discharge pipe; The drain tube is provided with an exhaust hole and a sealing unit, and the exhaust hole and the sealing unit are assembled so that before the pressure head is pressed for the first time, the exhaust hole can connect the inner cavity of the drain tube with the atmosphere, and after the pressure head is pressed for the first time, the sealing unit can close the exhaust hole.

2. The freeze-dried powder pump bottle according to claim 1, characterized in that: An annular groove is provided on the outer wall of the drain pipe, the exhaust hole is opened in the annular groove, and the exhaust hole is set through the wall of the drain pipe; the closing unit includes an elastic sealing ring, and the elastic sealing ring is assembled so that before the pressure head is pressed for the first time, the elastic sealing ring is in an area outside the annular groove, and after the pressure head is pressed for the first time, the elastic sealing ring can move into the annular groove to close the exhaust hole.

3. The freeze-dried powder pump bottle according to claim 2, characterized in that: The cam is secured to the cam face and is adapted to engage the first and second spring members when the cam is in a position to engage the first and second spring members when the cam is in a position to engage the first and second spring members when the cam is in a position to engage the first and second spring members when the cam is in a position to engage the first and second spring members when the cam is in a position to engage the first and second spring members when the cam is in a position to engage the 4. The freeze-dried powder pump bottle according to claim 3, characterized in that: The distance that the first tensioning portion protrudes in the radial direction of the drain pipe is greater than the distance that the second tensioning portion protrudes in the radial direction of the drain pipe.

5. The freeze-dried powder pump bottle according to claim 3, characterized in that: The second tensioning portion is spaced apart from the outer wall of the drain pipe, and the distance between the second tensioning portion and the outer wall of the drain pipe is greater than the distance that the elastic sealing ring protrudes from the outer wall of the drain pipe after the elastic sealing ring is sleeved in the annular groove.

6. The freeze-dried powder pump bottle according to claim 3, characterized in that: One end of the spring abuts against the lower end of the pressing head, and the other end of the spring abuts against the second tensioning portion.

7. The freeze-dried powder pump bottle according to claim 1, characterized in that: A sleeve is also provided below the base, and the sleeve is sleeved on the outside of the compression chamber and is spaced apart from the outer wall of the compression chamber. The interlayer between the sleeve and the compression chamber constitutes a first chamber for accommodating freeze-dried powder. A plug is provided at the lower end of the first chamber, and the inner cavity of the bottle body below the plug constitutes a second chamber for accommodating the solvent; a force transmission medium is provided between the plug and the piston, and the force transmission medium is assembled so that when the pressure head is pressed for the first time, the piston can push the plug out of the first chamber through the force transmission medium.

8. The freeze-dried powder pump bottle according to claim 7, characterized in that: An extension tube is provided at the lower end of the compression chamber, and the suction tube is slidably arranged in the extension tube. The lower end of the suction tube is fixedly connected to the block. The suction tube constitutes the force transmission medium. Before the pressure head is pressed for the first time, the upper end of the suction tube protrudes into the compression chamber.

9. The freeze-dried powder pump bottle according to claim 1, characterized in that: A movable bottom cover is provided at the bottom of the bottle body, and the movable bottom cover is slidably and sealingly connected to the inner wall of the bottle body.

10. The freeze-dried powder pump bottle according to claim 1, characterized in that: The upper end of the pressure pump head is further provided with an upper cover, and the upper end of the base is provided with a convex ring, and the upper cover and the convex ring form a plug-in fit.

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