Polyvinyl alcohol plastic pump head structure

Abstract

The utility model discloses a polyvinyl alcohol plastic pump head structure, which relates to the technical field of pump heads, and comprises a cavity, a pressing cover arranged at the top of the cavity, a discharge guide pipe arranged between the pressing cover and the cavity, and an extrusion component arranged at the outer end of the discharge guide pipe, the extrusion assembly comprises a first-stage pipeline and a second-stage pipeline, the second-stage pipeline is fixedly arranged at the outer end of the discharge guide pipe, and a connecting spring and a connecting hose are arranged between the second-stage pipeline and the first-stage pipeline; the extrusion assembly is arranged at the outer end of the discharge guide pipe, viscous fluid is extruded out through the extrusion assembly, after extrusion is completed, the first-stage pipeline can be pressed downwards and then rapidly loosened, the first-stage pipeline rapidly rebounds upwards through the elasticity of the connecting spring, residual fluid at an opening of the first-stage pipeline is thrown out, and therefore the fluid is discharged rapidly. And therefore, the primary pipeline is prevented from being blocked by air drying of the residual fluid, and subsequent use is smoother.

Description

Technical Field

[0001] This utility model relates to the field of pump head technology, specifically to a polyvinyl alcohol plastic pump head structure. Background Technology

[0002] Press-type pump heads are commonly found in the packaging of washing products such as shower gel and shampoo. The main body is generally made of highly elastic and tough polyvinyl alcohol plastic, with a built-in spring structure, and the fluid inside the container is squeezed out by manually pressing.

[0003] In the prior art, the outlet end of the pump head is generally oriented to the side so that when squeezed with one hand, the squeezed fluid can flow into the hand smoothly, such as a pump head structure disclosed in the prior art with the publication number CN213949300U.

[0004] However, in reality, the fluids squeezed out by the pump head are mostly shower gel, shampoo, etc. These fluids are very viscous and are very easy to remain at the outlet after being squeezed out. The remaining fluid is easily dried by the air and the dried fluid will block the outlet, causing poor fluid flow during subsequent use. Utility Model Content

[0005] Therefore, this utility model provides a polyvinyl alcohol plastic pump head structure to solve the problem in the prior art where fluid is easily left at the outlet after extrusion, causing the dried fluid to clog the outlet and resulting in poor fluid flow during subsequent use.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A polyvinyl alcohol plastic pump head structure includes a cavity, a pressing cover at the top of the cavity, a discharge conduit between the pressing cover and the cavity, the top end of the discharge conduit being fixedly connected to the inner top end of the pressing cover, and both the cavity and the pressing cover being made of polyvinyl alcohol plastic;

[0008] The outer end of the discharge conduit is provided with an extrusion assembly, which includes a primary pipe and a secondary pipe. The secondary pipe is fixedly installed at the outer end of the discharge conduit. A connecting spring and a connecting hose are provided between the secondary pipe and the primary pipe, with the connecting spring located at the outer end of the connecting hose.

[0009] Furthermore, the two ends of the connecting hose are fixedly connected to the primary pipe and the secondary pipe, respectively, and the two ends of the connecting spring are fixedly provided with annular protrusions, with the two annular protrusions fixedly provided at the outer ends of the primary pipe and the secondary pipe, respectively.

[0010] Furthermore, the outer end of the press cover has an extended notch, and the extrusion assembly extends outward from the inside of the press cover through the extended notch. The press cover can protect the connecting spring and the connecting hose inside.

[0011] Furthermore, the top of the cavity is provided with a detachable bottle cap, which is also made of polyvinyl alcohol plastic. The top of the cavity extends into the inside of the bottle cap. An external sleeve is fixedly provided on the bottle cap. The discharge conduit passes through the bottle cap through the external sleeve. A one-way valve is fixedly provided on the discharge conduit, so that the fluid can only flow from bottom to top along the discharge conduit.

[0012] Furthermore, the outer end of the bottle cap is provided with a detachable cleaning component. The cleaning component includes an elastic retaining ring that is snapped onto the outer end of the bottle cap. The elastic retaining ring can be detached from the bottle cap. An elastic baffle is fixedly provided on the front side of the elastic retaining ring. The top of the elastic baffle extends to the top of the bottle cap, and one end of the primary pipe can contact the rear side of the elastic baffle.

[0013] Furthermore, the bottom end of the discharge conduit extends into the cavity and is fixedly provided with a lower pressure plate. The outer end of the lower pressure plate contacts the inner wall of the cavity, and a vent is provided at the outer end of the lower pressure plate, which serves to allow air to pass through.

[0014] Furthermore, a bellows and a return spring are fixedly provided at the bottom end of the lower pressure plate. The return spring is sleeved on the outer end of the bellows. The bottom ends of the bellows and the return spring are fixedly connected to the inner wall of the cavity. The bottom end of the discharge conduit communicates with the inside of the bellows so as to squeeze out the fluid.

[0015] Furthermore, a suction tube is fixedly provided at the bottom of the cavity, and the top of the suction tube communicates with the inside of the bellows. A one-way valve is fixedly provided on the suction tube to prevent fluid from flowing back down through the suction tube.

[0016] This utility model has the following advantages:

[0017] 1. By setting an extrusion component at the outer end of the discharge conduit, viscous fluid is squeezed out through the extrusion component. After extrusion, the primary pipe can be pressed down and then quickly released. The elasticity of the connecting spring causes the primary pipe to rebound quickly upward, throwing out the fluid remaining at the opening of the primary pipe. This prevents the residual fluid from drying out and clogging the primary pipe, making subsequent use smoother.

[0018] 2. By placing the return spring on the outside of the bellows, it is never in contact with the fluid, thus preventing it from being corroded by the fluid and improving the service life of the return spring and the pump head structure.

[0019] 3. The main components of the pump head structure, such as the cavity, pressing cap, and bottle cap, are all made of polyvinyl alcohol plastic, which gives it the advantages of being sturdy, highly elastic, and having a longer service life. Attached Figure Description

[0020] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0021] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0022] Figure 1 This is an overall structural diagram of the present invention;

[0023] Figure 2 This is a diagram showing the internal structure of the cavity in this utility model;

[0024] Figure 3 This is an exploded view of the bottle cap and cavity of this utility model;

[0025] Figure 4 This is a bottom view of the press cover structure of this utility model;

[0026] Figure 5 For the present utility model Figure 4 Enlarged view of section A in the middle;

[0027] Figure 6 This is a structural diagram of the cleaning component of this utility model.

[0028] In the diagram: 1. Cavity; 2. Suction tube; 3. Cleaning assembly; 301. Elastic retaining ring; 302. Elastic baffle; 4. External sleeve; 5. Bottle cap; 6. Extrusion assembly; 601. Primary pipe; 602. Secondary pipe; 603. Connecting spring; 604. Connecting hose; 7. Press cap; 8. Discharge conduit; 9. Lower pressure plate; 10. Vent notch; 11. Corrugated tube; 12. Return spring; 13. Extension notch. Detailed Implementation

[0029] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0030] like Figure 1-6 As shown, this utility model provides a polyvinyl alcohol plastic pump head structure, including a cavity 1, a pressing cover 7 on the top of the cavity 1, a discharge conduit 8 between the pressing cover 7 and the cavity 1, the top end of the discharge conduit 8 being fixedly connected to the inner top end of the pressing cover 7, and both the cavity 1 and the pressing cover 7 being made of polyvinyl alcohol plastic.

[0031] The outer end of the discharge conduit 8 is provided with an extrusion assembly 6. The extrusion assembly 6 includes a primary pipe 601 and a secondary pipe 602. The secondary pipe 602 is fixedly installed at the outer end of the discharge conduit 8. A connecting spring 603 and a connecting hose 604 are provided between the secondary pipe 602 and the primary pipe 601. The connecting spring 603 is located at the outer end of the connecting hose 604.

[0032] When in use, the pump head structure moves the discharge conduit 8 downward by pressing down the pressure cap 7. As it moves downward, the fluid inside the container flows upward along the discharge conduit 8 and eventually flows out through the extrusion assembly 6. When the fluid flows out, it flows through the secondary pipe 602, the connecting hose 604 and the primary pipe 601 in sequence, and finally flows out through the opening at the front end of the primary pipe 601.

[0033] After the fluid is squeezed out, the user can press down on the primary pipe 601, causing the connecting spring 603 and connecting hose 604 connecting the primary pipe 601 and the secondary pipe 602 to bend. The bending of the connecting spring 603 generates elasticity. Then, the primary pipe 601 is released, and under the elastic force of the connecting spring 603, the primary pipe 601 quickly rebounds upward. The rebound causes the fluid remaining at the opening of the primary pipe 601, and even the fluid that has not completely flowed out inside the primary pipe 601, to be thrown out. The above action can be repeated multiple times to avoid fluid remaining at the opening of the primary pipe 601, thereby preventing the remaining fluid from drying out and clogging the primary pipe 601, making subsequent use smoother.

[0034] The two ends of the connecting hose 604 are fixedly connected to the primary pipe 601 and the secondary pipe 602 respectively. The two ends of the connecting spring 603 are fixedly provided with annular protrusions, and the two annular protrusions are fixedly provided on the outer ends of the primary pipe 601 and the secondary pipe 602 respectively.

[0035] The outer end of the press cover 7 has an extension notch 13. The extrusion component 6 extends outward from the inside of the press cover 7 through the extension notch 13. The press cover 7 can protect the connecting spring 603 and the connecting hose 604 inside. When the primary pipe 601 is swung, it can be blocked by hand to prevent the fluid that is swung out from splashing everywhere.

[0036] This pump head structure is installed at the opening of the container for use, such as... Figure 1 , 3 As shown, the top of the cavity 1 is provided with a detachable bottle cap 5, which is also made of polyvinyl alcohol plastic. The top of the cavity 1 extends into the inside of the bottle cap 5. An external sleeve 4 is fixedly provided on the bottle cap 5. The discharge conduit 8 passes through the bottle cap 5 through the external sleeve 4. A one-way valve is fixedly provided on the discharge conduit 8, and the fluid can only flow from bottom to top along the discharge conduit 8.

[0037] The bottle cap 5 is fixed to the opening of the container by threaded fitting. The part above the bottle cap 5 is located outside the container, while the part below the bottle cap 5, including the cavity 1, is located inside the container. When the pressing cap 7 is pressed, the discharge tube 8 moves up and down along the outer sleeve 4.

[0038] To further clean the fluid remaining on extrusion assembly 6, such as Figure 1 , 6 As shown, the outer end of the bottle cap 5 is provided with a detachable cleaning component 3. The cleaning component 3 includes an elastic retaining ring 301 that is snapped onto the outer end of the bottle cap 5. The elastic retaining ring 301 can be detached from the bottle cap 5. An elastic baffle 302 is fixedly provided on the front side of the elastic retaining ring 301. The top end of the elastic baffle 302 extends to the top of the bottle cap 5. One end of the primary pipe 601 can contact the rear side of the elastic baffle 302.

[0039] A cleaning component 3 is fixed to the outer end of the bottle cap 5. The elastic retaining ring 301 is an incomplete ring with an inner diameter slightly smaller than the outer diameter of the bottle cap 5. Therefore, the elastic retaining ring 301 can be stuck to the outer end of the bottle cap 5 by its own elasticity. The top of the elastic baffle 302 extends upward. When the press cap 7 is pressed down, the extrusion component 6 moves downward and continuously extrudes fluid.

[0040] When the extrusion assembly 6 moves down to the elastic baffle 302, the open end of the primary pipe 601 will come into close contact with the rear side of the elastic baffle 302. In this way, the elastic baffle 302 will seal the open end of the primary pipe 601, and the fluid will no longer be extruded. The pressing cap 7 will also be difficult to move down further. The elastic baffle 302 cuts off the fluid inside and outside the primary pipe 601, and scrapes away some of the fluid remaining at the front end of the primary pipe 601, so as to prevent the viscous fluid from dripping onto the cap 5 or remaining on the extrusion assembly 6 and being difficult to clean. During use, fluid will also stick to the elastic baffle 302, which needs to be wiped and cleaned frequently.

[0041] The fluid is drawn into cavity 1, then pressed down to squeeze the fluid out of cavity 1, such as... Figure 1-3 As shown, the bottom end of the discharge conduit 8 extends into the cavity 1 and is fixedly provided with a lower pressure plate 9. The outer end of the lower pressure plate 9 contacts the inner wall of the cavity 1, and a venting notch 10 is provided at the outer end of the lower pressure plate 9. The venting notch 10 serves to allow air to pass through.

[0042] The bottom end of the lower pressure plate 9 is fixedly provided with a bellows 11 and a return spring 12. The return spring 12 is sleeved on the outer end of the bellows 11. The bottom ends of the bellows 11 and the return spring 12 are fixedly connected to the inner wall of the cavity 1. The bottom end of the discharge conduit 8 is connected to the inside of the bellows 11 so as to squeeze out the fluid.

[0043] A suction pipe 2 is fixedly installed at the bottom of the cavity 1. The top of the suction pipe 2 is connected to the inside of the bellows 11. A one-way valve is fixedly installed on the suction pipe 2 to prevent the fluid from flowing back down through the suction pipe 2.

[0044] The bottom end of the suction pipe 2 is inserted into the bottom of the container through a pipe. When the discharge pipe 8 moves downward, it drives the lower pressure plate 9 to move downward inside the cavity 1, thereby compressing the bellows 11 and the return spring 12. Then the discharge pipe 8 is released, and the return spring 12 pushes the lower pressure plate 9 to move upward back to its original position. The bellows 11 expands again. Under the action of negative pressure, the fluid in the container is sucked into the bellows 11 through the suction pipe 2. When the bellows 11 is squeezed again, the fluid inside the bellows 11 will flow downward through the discharge pipe 8 due to the compression and eventually flow out. The return spring 12 rebounds and causes the fluid in the container to be sucked into the bellows 11 again. This cycle repeats. During this process, the return spring 12 is located outside the bellows 11 and never comes into contact with the fluid, so that it is not affected by the fluid and corroded, thus improving the service life of the return spring 12 and the pump head structure.

[0045] Although the present invention has been described in detail above with general descriptions and specific embodiments, some modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. A polyvinyl alcohol plastic pump head structure, comprising a cavity (1), characterized in that: The top of the cavity (1) is provided with a pressing cover (7), and a discharge conduit (8) is provided between the pressing cover (7) and the cavity (1). Both the cavity (1) and the pressing cover (7) are made of polyvinyl alcohol plastic. The discharge conduit (8) is provided with an extrusion assembly (6) at its outer end. The extrusion assembly (6) includes a primary pipe (601) and a secondary pipe (602). The secondary pipe (602) is fixedly installed at the outer end of the discharge conduit (8). A connecting spring (603) and a connecting hose (604) are provided between the secondary pipe (602) and the primary pipe (601). The connecting spring (603) is located at the outer end of the connecting hose (604).

2. The polyvinyl alcohol plastic pump head structure according to claim 1, characterized in that: The two ends of the connecting hose (604) are fixedly connected to the primary pipe (601) and the secondary pipe (602) respectively. The two ends of the connecting spring (603) are fixedly provided with annular protrusions, and the two annular protrusions are fixedly provided on the outer ends of the primary pipe (601) and the secondary pipe (602) respectively.

3. The polyvinyl alcohol plastic pump head structure according to claim 1, characterized in that: The outer end of the press cover (7) is provided with an extension notch (13), and the extrusion component (6) extends outward from the inside of the press cover (7) through the extension notch (13).

4. The polyvinyl alcohol plastic pump head structure according to claim 1, characterized in that: The top of the cavity (1) is provided with a detachable bottle cap (5), which is made of polyvinyl alcohol plastic. An external sleeve (4) is fixedly provided on the bottle cap (5). The discharge conduit (8) passes through the bottle cap (5) through the external sleeve (4). A one-way valve is fixedly provided on the discharge conduit (8).

5. The polyvinyl alcohol plastic pump head structure according to claim 4, characterized in that: The bottle cap (5) is provided with a detachable cleaning component (3) at its outer end. The cleaning component (3) includes an elastic retaining ring (301) that is snapped onto the outer end of the bottle cap (5). An elastic baffle (302) is fixedly provided on the front side of the elastic retaining ring (301). The top of the elastic baffle (302) extends to the top of the bottle cap (5).

6. The polyvinyl alcohol plastic pump head structure according to claim 1, characterized in that: The bottom end of the discharge conduit (8) extends into the cavity (1) and is fixedly provided with a lower pressure plate (9). The outer end of the lower pressure plate (9) contacts the inner wall of the cavity (1), and the outer end of the lower pressure plate (9) is provided with a venting notch (10).

7. The polyvinyl alcohol plastic pump head structure according to claim 6, characterized in that: The bottom end of the lower pressure plate (9) is fixedly provided with a bellows (11) and a reset spring (12). The reset spring (12) is sleeved on the outer end of the bellows (11). The bottom ends of the bellows (11) and the reset spring (12) are fixedly connected to the inner wall of the cavity (1). The bottom end of the discharge conduit (8) is connected to the inside of the bellows (11).

8. The polyvinyl alcohol plastic pump head structure according to claim 7, characterized in that: The bottom end of the cavity (1) is fixedly provided with a suction tube (2), the top end of the suction tube (2) is connected to the inside of the corrugated pipe (11), and a one-way valve is fixedly provided on the suction tube (2).

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