A liquid leakage-proof pump head

Abstract

The application discloses a liquid-leakage-preventing pump head, which comprises a cover body installed at the mouth of a container, a liquid storage chamber arranged in the cover body, a resettable pump head slidably installed in the liquid storage chamber, a liquid inlet pipe arranged in the liquid storage chamber, a liquid outlet pipe arranged in the pump head and corresponding to the liquid inlet pipe, a liquid outlet channel formed by the liquid outlet pipe and the liquid inlet pipe, and a first liquid outlet arranged in the liquid outlet channel and opened only when the pump head is pressed, so that the problem that the material in the bottle is squeezed out when the pump head is not pressed, the bottle body is pressed by mistake or the pressure in the bottle is increased is effectively solved, waste is avoided, the first elastic sheet and the first inclined surface part are integrally formed for resetting, on one hand, the product is made of plastic material, so that metal accessories are avoided, the problem that the emulsion corrodes the metal accessories is solved fundamentally, and on the other hand, the first elastic sheet and the first inclined surface part are integrally formed with the pump head and the cover body, the structure of the product is optimized, the production difficulty is reduced, the production efficiency is improved, and the production cost is also reduced.

Description

Technical Field

[0001] This invention relates to a press pump head, and more particularly to a leak-proof pump head. Background Technology

[0002] The current pump head reset is generally achieved using a metal spring, which has the strength and elasticity of a manuscript, ensuring the effectiveness of pump head reset. The processing technology is mature and the manufacturing cost is low. However, it is prone to rusting and contaminating the emulsion when immersed in the contents of the bottle for a long time.

[0003] In addition, existing pump heads have the problem of squeezing out the material inside the bottle when the bottle is accidentally pressed without pressing the pump head or when the pressure inside the bottle increases (such as temperature changes, chemical reactions between certain components in the emulsion, or the generation of gas), resulting in waste. Summary of the Invention

[0004] To overcome the shortcomings of the prior art, the present invention provides a leak-proof pump head.

[0005] The technical solution adopted by this invention to solve its technical problem is: A leak-proof pump head includes a cover installed at the opening of a container, a liquid storage chamber inside the cover, a resetting pump head slidably installed inside the liquid storage chamber, an inlet pipe inside the liquid storage chamber, an outlet pipe inside the pump head corresponding to the inlet pipe, the outlet pipe being connected to the inlet pipe to form an outlet channel, and a first outlet port that is opened only when the pump head is pressed inside the outlet channel.

[0006] The outlet pipe is slidably inserted into the inlet pipe. The first outlet is located at the lower end of the inlet pipe. A first one-way valve for sealing the first outlet is installed in the first outlet. A first baffle is provided in the inlet pipe above the first one-way valve. The first baffle abuts against the first one-way valve to keep the first outlet sealed. When the pump head is pressed, the outlet pipe pushes open the first baffle, allowing the first one-way valve to move.

[0007] The liquid outlet pipe is provided with a second liquid outlet, and a second one-way valve is installed in the second liquid outlet to block the second liquid outlet in one direction.

[0008] The sidewall of the inlet pipe is provided with a plurality of vertical grooves that connect the inside of the inlet pipe to the liquid storage chamber. The outlet pipe is provided with a first fastening part corresponding to the vertical groove, and the first fastening part is slidably installed in the vertical groove.

[0009] The outlet pipe is slidably fitted outside the inlet pipe, and the first outlet is located at the upper end of the inlet pipe. The pump head is located inside the outlet pipe and is equipped with a sealing valve for blocking the first outlet. When the pump head is pressed, the sealing valve disengages from the first outlet, thereby opening the first outlet.

[0010] The liquid outlet pipe is slidably fitted outside the liquid inlet pipe, and the first liquid outlet is located inside the liquid outlet pipe. The upper end of the liquid inlet pipe is provided with a sealing valve for sealing the first liquid outlet. When the pump head is pressed, the sealing valve disengages from the first liquid outlet, thereby opening the first liquid outlet.

[0011] The lower end of the inlet pipe is provided with a third outlet, and a third one-way valve is installed in the third outlet to block the third outlet in one direction. A fourth outlet is provided in the inlet pipe between the third outlet and the first outlet, and a fourth one-way valve is installed in the fourth outlet to block the fourth outlet in one direction.

[0012] The inlet pipe has a first connecting hole on its side wall between the third outlet and the fourth outlet, which connects the inside of the inlet pipe to the storage chamber.

[0013] The upper end of the inlet pipe is provided with a platform section, the sealing valve is provided on the platform section, and the platform section is provided with a plurality of drainage holes arranged to connect the inlet pipe and the outlet pipe.

[0014] The cover and the pump head are reset by an integrally formed first spring and a first inclined surface. When the pump head is pressed, the first spring deforms along the first inclined surface, so that the first spring has an elastic force to reset the pump head.

[0015] A leak-proof pump head includes a cap installed at the container opening, a resettable pump head slidably mounted inside the cap, a discharge pipe being provided in the pump head, and a suction tube connected to the lower end of the discharge pipe for discharging liquid while simultaneously driving the pump head to reset. A support rib is provided inside the discharge pipe, and the upper end of the suction tube abuts against the bottom of the support rib. A fifth one-way valve is installed inside the discharge pipe, which is pushed towards the suction tube by the reset rib and blocks the suction tube outlet. When the suction tube is pressed, the support rib is pushed up, supporting the separation of the fifth one-way valve from the suction tube outlet.

[0016] A leak-proof pump head includes a cover installed at the opening of a container, a liquid storage chamber inside the cover, a repositionable pump head slidably installed inside the liquid storage chamber, an outlet pipe inside the pump head, an inlet pipe inside the liquid storage chamber, the inlet pipe being connected to the outlet pipe to form an outlet channel, a seventh outlet blocked by a seventh one-way valve at the lower end of the inlet pipe, and an eighth outlet blocked by an eighth one-way valve at the upper end of the inlet pipe.

[0017] The top of the eighth one-way valve is arc-shaped, and a third spring is provided inside the liquid outlet pipe. The lower end of the third spring abuts against the top of the eighth one-way valve, and the center of the third spring and the center of the eighth one-way valve are not on the same vertical line.

[0018] A leak-proof pump head includes a cover installed at the opening of a container, a resettable pump head slidably mounted inside the cover, the pump head being provided with an outlet pipe, and an inlet pipe being provided inside the cover. The inlet pipe is connected to the outlet pipe to form an outlet channel, and a first outlet is provided in the outlet channel that opens only when the pump head is pressed.

[0019] The outlet pipe is slidably inserted into the inlet pipe. The first outlet is located at the lower end of the inlet pipe. A sixth check valve for sealing the first outlet is installed inside the first outlet. A second baffle is provided inside the inlet pipe above the sixth check valve. The second baffle abuts against the sixth check valve to keep the first outlet sealed. When the pump head is pressed, the outlet pipe pushes open the second baffle, allowing the sixth check valve to move.

[0020] The sixth one-way valve is integrally formed with the inlet pipe, and the sixth one-way valve and the inlet pipe are connected by a thin sheet. Initially, the sixth one-way valve is located on the upper side of the second baffle. When the pump head is pressed, the outlet pipe breaks the thin sheet and pushes the sixth one-way valve into the space between the first outlet and the second baffle.

[0021] A leak-proof pump head includes a cover installed at the opening of a container. A liquid storage chamber is provided within the cover. A resettable pump head is slidably mounted within the liquid storage chamber. An outlet pipe is provided within the pump head. An inlet pipe is provided within the liquid storage chamber. The inlet pipe is connected to the outlet pipe to form an outlet channel. A fifth outlet is provided on the outlet pipe, and a sixth outlet is provided on the inlet pipe. When the pump head is not pressed, the fifth and sixth outlets are misaligned. When the pump head is pressed, the fifth and sixth outlets are aligned.

[0022] The inlet pipe is connected to the cover body by a thin sheet. The side wall of the outlet pipe is provided with a hook hole. The inlet pipe is provided with a hook part corresponding to the hook hole. The hook part can be slidably installed in the hook hole.

[0023] The upper end of the inlet pipe is provided with a second spring plate, and the outlet pipe is provided with a second inclined section corresponding to the second spring plate. When the pump head is pressed, the second spring plate deforms along the second inclined section.

[0024] The inlet pipe has a central protrusion located below the sixth outlet. The central protrusion and the inner wall of the inlet pipe form an annular groove. A second connecting hole is provided in the annular groove to connect the sixth outlet with the suction pipe. A sealing ring is provided at the lower end of the outlet pipe. The sealing ring is inserted into the annular groove to block the second connecting hole.

[0025] The container opening has an external threaded portion on its outer side, and the cover has an internal threaded portion corresponding to the external threaded portion. The external threaded portion and the internal threaded portion are threadedly connected.

[0026] A reinforcing spring is provided between the spring and the inner wall of the liquid storage chamber.

[0027] The beneficial effects of this invention are: 1. The present invention has an inlet pipe in the liquid storage chamber and an outlet pipe in the pump head corresponding to the inlet pipe. The outlet pipe is connected to the inlet pipe to form an outlet channel. The outlet channel is provided with a first outlet that is opened only when the pump head is pressed, which effectively solves the problem that the material in the bottle will be squeezed out when the bottle body is accidentally pressed or the pressure inside the bottle increases when the pump head is not pressed, thus avoiding waste.

[0028] 2. The first spring and first inclined surface are integrally molded for resetting. When the pump head is pressed, the first spring deforms along the first inclined surface, giving it the elasticity to reset the pump head. On the one hand, the entire product is made of plastic material, thus avoiding the presence of metal parts and fundamentally solving the problem of emulsion corroding metal parts. On the other hand, the first spring, first inclined surface, pump head, and cover are integrally molded, optimizing the product structure, reducing production difficulty, improving production efficiency, and also reducing production costs. Attached Figure Description

[0029] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0030] Figure 1 This is a schematic diagram of the first embodiment; Figure 2 This is a schematic diagram of the second embodiment; Figure 3 This is a schematic diagram of the third embodiment; Figure 4 This is a schematic diagram of the fourth embodiment; Figure 5 yes Figure 4 Enlarged view of C in the middle; Figure 6 This is a schematic diagram of the fifth embodiment; Figure 7 This is a schematic diagram of the sixth embodiment; Figure 8 This is a schematic diagram of the seventh embodiment; Figure 9 This is one of the structural diagrams of the pump head; Figure 10 This is the second structural diagram of the pump head. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0032] It should be understood that these descriptions are merely exemplary and are not intended to limit the scope of the invention.

[0033] The following describes some embodiments of the present invention with reference to the accompanying drawings.

[0034] Reference Figure 1-10 A leak-proof pump head includes a cap 1 installed at the container opening, a liquid storage chamber 2 inside the cap 1, a resetting pump head 3 slidably installed inside the liquid storage chamber 2, an inlet pipe 4 inside the liquid storage chamber 2, and an outlet pipe 5 inside the pump head 3 corresponding to the inlet pipe 4. The outlet pipe 5 is connected to the inlet pipe 4 to form an outlet channel. The outlet channel has a first outlet 6 that opens only when the pump head 3 is pressed, effectively solving the problem that if the bottle is accidentally pressed or the pressure inside the bottle increases when the pump head is not pressed, the material inside the bottle will be squeezed out, thus avoiding waste.

[0035] First embodiment: Reference Figure 1 The outlet pipe 5 is slidably inserted into the inlet pipe 4. The first outlet 6 is located at the lower end of the inlet pipe 4. A first one-way valve 7 for blocking the first outlet 6 is installed in the first outlet 6. A first baffle 8 is provided in the inlet pipe 4 above the first one-way valve 7. The first baffle 8 abuts against the first one-way valve 7 to keep the first outlet 6 blocked. When the pump head 3 is pressed, the outlet pipe 5 pushes open the first baffle 8, allowing the first one-way valve 7 to move.

[0036] In this embodiment, the first baffle 8 is symmetrically arranged on both sides of the inlet pipe 4. When the pump head 3 is pressed, the outlet pipe 5 pushes the first baffle 8 open. The size between the two first baffles 8 is smaller than the diameter of the first one-way valve 7. That is, the first one-way valve 7 cannot move upward past the first baffle 8. However, after the first baffle 8 is pushed open, the first one-way valve 7 has a movement space of 0.5-2mm. When the first one-way valve 7 moves upward, the first outlet 6 is opened.

[0037] In this embodiment, the first baffle 8 has two implementation methods. One is that both sides of the first baffle 8 are connected to the inner wall of the liquid inlet pipe 4. This structure has high strength and good pressure resistance. The other is that both sides of the first baffle 8 are separated from the inner wall of the liquid inlet pipe 4 (such as the first baffle 8 only being connected to the inner wall of the liquid inlet pipe 4 on the upper side). This structure is easy to demold and has high production efficiency.

[0038] The liquid outlet pipe 5 is provided with a second liquid outlet 9, and a second one-way valve 10 is installed in the second liquid outlet 9 to one-way block the second liquid outlet 9.

[0039] The side wall of the inlet pipe 4 is provided with a plurality of vertical grooves that connect the inside of the inlet pipe 4 to the liquid storage chamber 2. The outlet pipe 5 is provided with a first fastening part 11 corresponding to the vertical groove. The first fastening part 11 is slidably installed in the vertical groove. The first fastening part 11 and the vertical groove can serve as a guide and prevent the pump head 3 from being pulled out directly.

[0040] The liquid discharge process in this embodiment: Upon first pressing of the pump head 3, air in the storage chamber 2 enters the inlet pipe 4 through the vertical slide groove, opening the second one-way valve 10 and the second outlet 9, allowing air to escape. At this time, due to the reduced volume in the storage chamber 2 and pump head 3, the air pressure increases, pressing the first one-way valve 7 against the first outlet 6 to ensure its sealing effect. Simultaneously, the first baffle 8 is pushed open, the pump head 3 is released and reset, and the second one-way valve 10 falls back to the second outlet 9, sealing it. The increased volume in the storage chamber 2 and pump head 3 creates negative pressure, causing the material in the bottle to rise through the suction tube 16, opening the first one-way valve 7 and causing it to... When the first baffle 8 abuts against the outlet pipe 5, the material enters the storage chamber 2 from the vertical chute. After the outlet pipe 5 separates from the first baffle 8, the first baffle 8 tends to reset, thereby applying a pushing force to the first one-way valve 7. However, since the material is still continuously entering the storage chamber 2 (this process stops when the pump head 3 is fully reset), the position of the first one-way valve 7 remains unchanged, that is, the first outlet 6 is in the open state. When the pump head 3 is fully reset, the material stops flowing, the first baffle 8 resets, and pushes the first one-way valve 7 towards the first outlet 6, causing the first outlet 6 to be re-sealed. Pressing the pump head 3 again will allow normal liquid discharge.

[0041] If the outlet pipe 5 separates from the first baffle 8, and the elasticity of the first baffle 8 is too great, it can directly push the first one-way valve 7 towards the first outlet 6, blocking the first outlet 6. This means that the material cannot enter the storage chamber 2 normally (the force that drives the material into the storage chamber 2 is actually the increase in volume of the storage chamber 2 and the pump head 3, creating a negative pressure effect, i.e., the reset force of the pump head 3). It is necessary to reduce the elasticity generated by the first baffle 8 or increase the reset force of the pump head 3.

[0042] Second embodiment: Reference Figure 2 The outlet pipe 5 is slidably fitted outside the inlet pipe 4. The first outlet 6 is located at the upper end of the inlet pipe 4. The pump head 3 is located inside the outlet pipe 5 and is equipped with a sealing valve 12 for blocking the first outlet 6. When the pump head 3 is pressed, the sealing valve 12 disengages from the first outlet 6, thereby opening the first outlet 6.

[0043] Third embodiment: Reference Figure 3The outlet pipe 5 is slidably fitted outside the inlet pipe 4. The first outlet 6 is located inside the outlet pipe 5. The upper end of the inlet pipe 4 is provided with a sealing valve 12 for blocking the first outlet 6. When the pump head 3 is pressed, the sealing valve 12 disengages from the first outlet 6, thereby opening the first outlet 6. The upper end of the inlet pipe 4 is provided with a platform section, and the sealing valve 12 is located on the platform section. The platform section is provided with a plurality of drainage holes arranged to connect the inlet pipe 4 and the outlet pipe 5.

[0044] The lower end of the inlet pipe 4 is provided with a third outlet 13. A third one-way valve 17 is installed in the third outlet 13 to block the third outlet 13 in one direction. A fourth outlet 14 is provided in the inlet pipe 4 between the third outlet 13 and the first outlet 6. A fourth one-way valve 15 is installed in the fourth outlet 14 to block the fourth outlet 14 in one direction. A first connecting hole is provided on the side wall of the inlet pipe 4 between the third outlet 13 and the fourth outlet 14 to connect the inside of the inlet pipe 4 with the liquid storage chamber 2.

[0045] The liquid discharge process in Examples 2 and 3: When the pump head 3 is pressed for the first time, the sealing valve 12 disengages from the first outlet 6, opening the first outlet 6. Air in the storage chamber 2 enters the inlet pipe 4 through the first connecting hole, opening the fourth one-way valve 15 and opening the fourth outlet 14. Air then enters the outlet pipe 5 through the inlet pipe 4 and is discharged. After the pump head 3 is released, a negative pressure is formed between the pump head 3 and the storage chamber 2. The fourth one-way valve 15 is drawn towards the fourth outlet 14, sealing it. Simultaneously, the third one-way valve 17 is drawn away from the third outlet 13, opening the third outlet 13. The material in the bottle is drawn into the storage chamber 2 through the suction tube 16. When the pump head 3 is fully reset, the sealing valve 12 re-seals the first outlet 6 to prevent leakage when the pump head 3 is not pressed. Pressing the pump head 3 again will allow normal dispensing.

[0046] The cover 1 and the pump head 3 are reset by an integrally formed first spring and a first inclined surface. When the pump head 3 is pressed, the first spring deforms along the first inclined surface, giving it the elasticity to reset the pump head 3. On the one hand, the entire product is made of plastic material, thus avoiding the presence of metal parts and fundamentally solving the problem of emulsion corroding metal parts. On the other hand, the first spring, the first inclined surface, the pump head, and the cover are integrally formed, optimizing the product structure, reducing production difficulty, improving production efficiency, and also reducing production costs.

[0047] refer to Figure 1 The first spring is disposed at the upper end of the inlet pipe 4, and the first beveled part is disposed on the outside of the outlet pipe 5 (e.g., Figure 1 As shown, A1 is the first shrapnel, and B1 is the first inclined surface (see reference). Figure 2 , 3 The first inclined section is located on the outer side of the inlet pipe 4, and the lower end of the outlet pipe 5 extends downward to form the first spring sheet (e.g. Figure 2 , 3 As shown, A2 is the first shrapnel, and B2 is the first inclined surface.

[0048] refer to Figure 2 The inner wall of the outlet pipe 5 and the outer wall of the inlet pipe 4 are respectively provided with a first limiting part 18 and a second limiting part 19 that cooperate with each other. When the pump head 3 is in an unpressed state, the upper side of the first limiting part 18 is lower than the lower side of the second limiting part 19, or the upper side of the first limiting part 18 abuts against the lower side of the second limiting part 19, to prevent the pump head 3 from being pulled out directly.

[0049] refer to Figure 3 In addition to their sealing function, the sealing valve 12 and the first liquid outlet 6 can also prevent the pump head 3 from being pulled out directly.

[0050] In the illustrations of this application, all one-way valves adopt a ball structure. When the ball is displaced, the corresponding outlet is opened. In addition, this application can also adopt existing conventional one-way valve structures.

[0051] Fourth embodiment: Reference Figure 4 A leak-proof pump head includes a cover 1 installed at the container opening. A resettable pump head 3 is slidably installed inside the cover 1. The pump head 3 is provided with a liquid outlet pipe 5. The lower end of the liquid outlet pipe 5 is connected to a suction tube 16 for discharging liquid and simultaneously driving the pump head 3 to reset. A support rib 38 is provided inside the liquid outlet pipe 5. The upper end of the suction tube 16 abuts against the bottom of the support rib 38. A fifth one-way valve 20 is installed inside the liquid outlet pipe 5, which is pushed towards the suction tube 16 by the reset rib 21 and blocks the outlet of the suction tube 16. When the suction tube 16 is pressed, the support rib 38 is pushed up and supports the separation of the fifth one-way valve 20 from the outlet of the suction tube 16.

[0052] Initially, the fifth one-way valve 20 is engaged with the outlet of the straw 16, the reset rib 21 is deformed, and it continuously applies a pushing force to the fifth one-way valve 20 to ensure that the outlet of the straw 16 is blocked. The support rib 38 is not engaged with the fifth one-way valve 20 (e.g., Figure 5As shown), the straw 16 is in a straight state, i.e., without elasticity. When the pump head 3 is pressed, the straw 16 bends and applies a pushing force to the support rib 38. The support rib 38 deforms upward. When the support rib 38 abuts against the fifth one-way valve 20, it will lift the fifth one-way valve 20, thereby opening the outlet of the straw 16 (the support rib 38 has a structure that is oblique to the center. When the support rib 38 deforms, it will move towards the center, thereby gradually reducing the size between the two sides of the support rib 38 to ensure that the fifth one-way valve 20 can be lifted). At this time, if the pump head 3 is pressed again, the material in the bottle can be directly squeezed out.

[0053] Fifth embodiment: Reference Figure 6 A leak-proof pump head includes a cover 1 installed at the container opening. A liquid storage chamber 2 is provided inside the cover 1. A resettable pump head 3 is slidably installed inside the liquid storage chamber 2. An outlet pipe 5 is provided inside the pump head 3. An inlet pipe 4 is provided inside the liquid storage chamber 2. The inlet pipe 4 is connected to the outlet pipe 5 to form an outlet channel. The lower end of the inlet pipe 4 has a seventh outlet 34 blocked by a seventh one-way valve 33. The upper end of the inlet pipe 4 has an eighth outlet 36 blocked by an eighth one-way valve 35. The top of the eighth one-way valve 35 is arc-shaped. A third spring plate 37 is provided inside the outlet pipe 5. The lower end of the third spring plate 37 abuts against the top of the eighth one-way valve 35, and the lower end of the third spring plate 37 is adapted to the top of the eighth one-way valve 35. The center of the third spring 37 and the center of the eighth one-way valve 35 are not on the same vertical line. That is, the third spring 37 and the eighth one-way valve 35 are eccentrically set. After pressing the pump head 3, the third spring 37 deforms and applies a large force to the eighth one-way valve 35, shifting the third spring 37 and the eighth one-way valve 35 to one side, thereby pressing the eighth one-way valve 35 to one side and creating a gap between the eighth one-way valve 35 and the eighth liquid outlet 36, thus opening the eighth liquid outlet 36. When the pump head 3 is released, the third spring 37 returns to its original position, and the lower end of the third spring 37 re-engages with the top of the eighth one-way valve 35 to position the eighth one-way valve 35 and restore it to the state of blocking the eighth liquid outlet 36.

[0054] As the top of the eighth one-way valve 35 is semi-circular, and the lower end of the third spring 37 is a quarter-circle structure, when the third spring 37 is pushed towards the eighth one-way valve 35, the eighth one-way valve 35 will move along the quarter-circle structure of the lower end of the third spring 37.

[0055] For the fourth and fifth embodiments, the one-way valve structure itself is used to prevent leakage. In daily life, if the bottle is accidentally pressed, increasing the pressure inside, such as when the bottle is stepped on (these bottles are of a certain strength, and when stepped on, their strength allows them to undergo only minor deformation), the pressure is generally too low to open the one-way valve, thus achieving the effect of preventing leakage. Alternatively, if the material inside the bottle undergoes a chemical reaction that produces gas, causing the pressure to increase, it may take a long time (several months or even years) to generate enough pressure to open the one-way valve. In such cases, the one-way valve structure can also be used to prevent leakage.

[0056] If the bottle body is made entirely of a flexible bag, such as a plastic bag, when a person steps on it directly, the plastic bag has almost no ability to resist deformation. Only when a large pressure is generated in a short period of time can a one-way valve be used as a protection device to prevent leakage.

[0057] Sixth embodiment: Reference Figure 7 A leak-proof pump head includes a cover 1 installed at the container opening. A resettable pump head 3 is slidably installed inside the cover 1. The pump head 3 is provided with a liquid outlet pipe 5. A liquid inlet pipe 4 is provided inside the cover 1. The liquid inlet pipe 4 is connected to the liquid outlet pipe 5 to form a liquid outlet channel. A first liquid outlet 6 is provided in the liquid outlet channel, which is opened only when the pump head 3 is pressed. The liquid outlet pipe 5 is slidably inserted into the liquid inlet pipe 4. The first liquid outlet 6 is located at the lower end of the liquid inlet pipe 4. A sixth one-way valve 22 for sealing the first liquid outlet 6 is installed inside the first liquid outlet 6. The liquid inlet pipe 4 is located above the sixth one-way valve 22. A second baffle 23 is provided on the side. The second baffle 23 abuts against the sixth one-way valve 22 to keep the first outlet 6 blocked. When the pump head 3 is pressed, the outlet pipe 5 pushes open the second baffle 23, giving the sixth one-way valve 22 room to move. The sixth one-way valve 22 is integrally formed with the inlet pipe 4, and the sixth one-way valve 22 and the inlet pipe 4 are connected by a thin sheet. Initially, the sixth one-way valve 22 is located above the second baffle 23. When the pump head 3 is pressed, the outlet pipe 5 breaks the thin sheet and pushes the sixth one-way valve 22 into the space between the first outlet 6 and the second baffle 23.

[0058] When the pump head 3 is pressed to its limit, if the outlet pipe 5 still cannot push the sixth one-way valve 22 to the working position, ribs, strips, or other structures that do not affect the liquid discharge can be added to the lower end of the outlet pipe 5 to increase the length of the outlet pipe 5, so as to ensure that the sixth one-way valve 22 is pushed to the working position.

[0059] In this embodiment, when the pump head 3 is not pressed, the sixth one-way valve 22 and the inlet pipe 4 are an integral structure. After the pump head 3 is pressed, the outlet pipe 5 pushes the sixth one-way valve 22 to move downward and pass over the second baffle 23, and gets stuck in the space between the second baffle 23. The subsequent usage principle is the same as that of the first embodiment.

[0060] That is, in this embodiment, the configuration of the sixth one-way valve 22 can also be applied to the first embodiment.

[0061] Seventh embodiment: Reference Figure 8 A leak-proof pump head includes a cover 1 installed at the container opening, a liquid storage chamber 2 inside the cover 1, a repositionable pump head 3 slidably installed inside the liquid storage chamber 2, an outlet pipe 5 inside the pump head 3, an inlet pipe 4 inside the liquid storage chamber 2, the inlet pipe 4 being connected to the outlet pipe 5 to form an outlet channel, a fifth outlet 24 on the outlet pipe 5, and a sixth outlet 25 on the inlet pipe 4. When the pump head 3 is not pressed, the fifth outlet 24 and the sixth outlet 25 are misaligned; when the pump head 3 is pressed, the fifth outlet 24 and the sixth outlet 25 are aligned.

[0062] The inlet pipe 4 is connected to the cover 1 by a thin sheet. The side wall of the outlet pipe 5 is provided with a hook hole 26. The inlet pipe 4 is provided with a hook part 27 corresponding to the hook hole 26. The hook part 27 can be slidably installed in the hook hole 26. The sliding between the hook part 27 and the hook hole 26 is relative. When the pump head 3 is pressed, the hook hole 26 moves down. When the top of the hook hole 26 abuts against the hook part 27 and the pump head 3 is pressed further, the thin sheet will be pushed, the inlet pipe 4 moves down as a whole, and pushes the suction tube 16 to bend, thereby generating a restoring force acting on the pump head 3. After the pump head 3 is released, the suction tube 16 straightens and pushes the inlet pipe 4 up. The hook part 27 moves up. When the hook part 27 abuts against the bottom of the hook hole 26, it pushes the outlet pipe 5 up, thereby restoring the pump head 3.

[0063] The upper end of the inlet pipe 4 is provided with a second spring piece 28, and the outlet pipe 5 is provided with a second inclined part 29 corresponding to the second spring piece 28. When the pump head 3 is pressed, the second spring piece 28 deforms along the second inclined part 29. When the pump head 3 is released, the second spring piece 28 is the first to reset, and the fifth outlet 24 is misaligned with the sixth outlet 25, so that the fifth outlet 24 is blocked.

[0064] The inlet pipe 4 is provided with a central protrusion 30 on the lower side of the sixth outlet 25. The central protrusion 30 and the inner wall of the inlet pipe 4 form an annular groove 31. The annular groove 31 is provided with a second connecting hole that connects the sixth outlet 25 to the suction pipe 16. The lower end of the outlet pipe 5 is provided with a sealing ring 32. The sealing ring 32 is inserted into the annular groove 31 to block the second connecting hole.

[0065] The liquid discharge process in this embodiment: Pressing the pump head 3 causes the second spring 28 to deform along the second inclined surface 29, aligning the fifth liquid outlet 24 with the sixth liquid outlet 25. The fifth liquid outlet 24 is opened, and the sealing ring 32 is inserted into the annular groove 31, sealing the second connecting hole. With the second connecting hole blocked, if the pump head 3 is pressed further, the air in the liquid storage chamber 2 is discharged from the pump head 3 through the fifth liquid outlet 24. When the top of the hook hole 26 abuts against the hook part 27 and the pump head 3 is pressed further, the thin sheet is pushed down, the liquid inlet pipe 4 moves downward as a whole, and pushes the suction tube 16 to bend, thereby generating a restoring force acting on the pump head 3. After the pump head 3 is released, the second spring 28 is reset first, the fifth liquid outlet 24 and the sixth liquid outlet 25 are misaligned, and the fifth liquid outlet 24 is blocked. The sealing ring 32 exits from the annular groove 31, opening the second connecting hole. The straw 16 straightens and resets, pushing the inlet pipe 4 upward. The hook part 27 moves upward simultaneously. When the hook part 27 abuts against the top of the hook hole 26, it pushes the pump chamber 3 upward to reset. A negative pressure is formed in the liquid storage chamber 2. The material in the bottle enters the liquid storage chamber 2 through the straw 16, the second connecting hole and the sixth liquid outlet 25. When pressed again, the liquid can be dispensed normally.

[0066] In this application, the principle of straw bending deformation and straightening reset is used as the reset driving force of the pump head 3, and the spring sheet structure moves along the inclined surface to generate deformation, thereby generating the reset driving force of the pump head 3. These two methods can be used interchangeably within reasonable structural aspects.

[0067] The container opening has an external threaded portion on its outer side, and the cap 1 has an internal threaded portion corresponding to the external threaded portion. The external threaded portion and the internal threaded portion are threadedly connected. In addition, other conventional installation methods for bottle caps can also be used.

[0068] A reinforcing spring 39 is provided between the spring (corresponding to the first spring, the second spring, and the third spring) and the inner wall of the liquid storage chamber 2. When the spring deforms, it will simultaneously squeeze the reinforcing spring 39, causing it to deform and generate elastic force. When it resets, the reinforcing spring 39 recovers and squeezes the corresponding spring, thereby increasing the driving force for the pump head 3 to reset and avoiding insufficient driving force for reset, which would cause the pump head 3 to fail to reset normally.

[0069] Furthermore, the structures of various springs and inclined surfaces can be interchanged, that is, the springs are set on the pump head 3, and the inclined surfaces are set in the liquid storage chamber.

[0070] Furthermore, the spring can be a sheet-like structure (such as...) Figure 9 As shown, 40 is the separation position between the two spring pieces), or it can be a ring structure (such as...). Figure 10 As shown in the figure, the ring design has higher elasticity than the sheet design.

[0071] In this invention, the term "a plurality of" refers to two or more unless otherwise expressly defined. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items. The terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection via an intermediate medium. Those skilled in the art will understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0072] It should be noted that when a component is referred to as being "assembled on," "mounted on," "fixed to," or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0073] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0074] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A leak-proof pump head, comprising a cover (1) installed at the container opening, wherein a liquid storage chamber (2) is provided inside the cover (1), and a resettable pump head (3) is slidably installed inside the liquid storage chamber (2), characterized in that... The liquid storage chamber (2) is provided with an inlet pipe (4), and the pump head (3) is provided with an outlet pipe (5) corresponding to the inlet pipe (4). The outlet pipe (5) is connected to the inlet pipe (4) to form an outlet channel. The outlet channel is provided with a first outlet (6) that will only open when the pump head (3) is pressed.

2. The leak-proof pump head according to claim 1, characterized in that... The outlet pipe (5) is slidably inserted into the inlet pipe (4). The first outlet (6) is located at the lower end of the inlet pipe (4). A first one-way valve (7) for blocking the first outlet (6) is installed in the first outlet (6). A first baffle (8) is provided in the inlet pipe (4) above the first one-way valve (7). The first baffle (8) abuts against the first one-way valve (7) to keep the first outlet (6) blocked. When the pump head (3) is pressed, the outlet pipe (5) pushes open the first baffle (8), so that the first one-way valve (7) has room to move.

3. The leak-proof pump head according to claim 2, characterized in that... The outlet pipe (5) is provided with a second outlet (9), and a second one-way valve (10) is installed in the second outlet (9) to block the second outlet (9) in one direction.

4. The leak-proof pump head according to claim 2, characterized in that... The side wall of the inlet pipe (4) is provided with a plurality of vertical grooves that connect the inside of the inlet pipe (4) to the liquid storage chamber (2). The outlet pipe (5) is provided with a first fastening part (11) corresponding to the vertical groove. The first fastening part (11) is slidably installed in the vertical groove.

5. The leak-proof pump head according to claim 1, characterized in that... The outlet pipe (5) is slidably fitted outside the inlet pipe (4), and the first outlet (6) is located at the upper end of the inlet pipe (4). The pump head (3) is located inside the outlet pipe (5) and is equipped with a sealing valve (12) for sealing the first outlet (6). When the pump head (3) is pressed, the sealing valve (12) disengages from the first outlet (6), thereby opening the first outlet (6).

6. The leak-proof pump head according to claim 1, characterized in that... The outlet pipe (5) is slidably fitted outside the inlet pipe (4), and the first outlet (6) is located inside the outlet pipe (5). The upper end of the inlet pipe (4) is provided with a sealing valve (12) for sealing the first outlet (6). When the pump head (3) is pressed, the sealing valve (12) disengages from the first outlet (6), thereby opening the first outlet (6).

7. The leak-proof pump head according to claim 5 or 6, characterized in that... The lower end of the inlet pipe (4) is provided with a third outlet (13), and a third one-way valve (17) is installed in the third outlet (13) to block the third outlet (13) in one direction. A fourth outlet (14) is provided in the inlet pipe (4) between the third outlet (13) and the first outlet (6), and a fourth one-way valve (15) is installed in the fourth outlet (14) to block the fourth outlet (14) in one direction.

8. The leak-proof pump head according to claim 7, characterized in that... The inlet pipe (4) is provided with a first connecting hole on the side wall between the third outlet (13) and the fourth outlet (14) to connect the inside of the inlet pipe (4) with the storage chamber (2).

9. The leak-proof pump head according to claim 6, characterized in that... The upper end of the inlet pipe (4) is provided with a platform section, and the sealing valve (12) is provided on the platform section. The platform section is provided with a plurality of drainage holes arranged to connect the inlet pipe (4) and the outlet pipe (5).

10. The leak-proof pump head according to claim 1, characterized in that... The cover (1) and the pump head (3) are reset through an integrally formed first spring and a first inclined surface. When the pump head (3) is pressed, the first spring deforms along the first inclined surface, so that the first spring has the elastic force to reset the pump head (3).

11. A leak-proof pump head, comprising a cover (1) installed at the container opening, wherein a resettable pump head (3) is slidably mounted within the cover (1), characterized in that... The pump head (3) is provided with a liquid outlet pipe (5). The lower end of the liquid outlet pipe (5) is connected to a suction pipe (16) for discharging liquid and simultaneously driving the pump head (3) to reset. A support rib (38) is provided inside the liquid outlet pipe (5). The upper end of the suction pipe (16) abuts against the bottom of the support rib (38). A fifth one-way valve (20) is installed inside the liquid outlet pipe (5) and is pushed towards the suction pipe (16) by the reset rib (21) and blocks the outlet of the suction pipe (16). When the suction pipe (16) is pressed, the support rib (38) is pushed up and supports the separation of the fifth one-way valve (20) from the outlet of the suction pipe (16).

12. A leak-proof pump head, comprising a cover (1) installed at the container opening, wherein a liquid storage chamber (2) is provided inside the cover (1), and a resettable pump head (3) is slidably installed inside the liquid storage chamber (2), characterized in that... The pump head (3) is provided with an outlet pipe (5), and the liquid storage chamber (2) is provided with an inlet pipe (4). The inlet pipe (4) is connected to the outlet pipe (5) to form an outlet channel. The lower end of the inlet pipe (4) is provided with a seventh outlet (34) blocked by a seventh check valve (33), and the upper end of the inlet pipe (4) is provided with an eighth outlet (36) blocked by an eighth check valve (35).

13. The leak-proof pump head according to claim 12, characterized in that... The top of the eighth one-way valve (35) is arc-shaped, and a third spring plate (37) is provided inside the liquid outlet pipe (5). The lower end of the third spring plate (37) abuts against the top of the eighth one-way valve (35), and the center of the third spring plate (37) and the center of the eighth one-way valve (35) are not on the same vertical line.

14. A leak-proof pump head, comprising a cover (1) installed at the container opening, wherein a resettable pump head (3) is slidably mounted within the cover (1), characterized in that... The pump head (3) is provided with an outlet pipe (5), and the cover (1) is provided with an inlet pipe (4). The inlet pipe (4) is connected to the outlet pipe (5) to form an outlet channel. The outlet channel is provided with a first outlet (6) that will only open when the pump head (3) is pressed.

15. The leak-proof pump head according to claim 14, characterized in that... The outlet pipe (5) is slidably inserted into the inlet pipe (4). The first outlet (6) is located at the lower end of the inlet pipe (4). A sixth check valve (22) for blocking the first outlet (6) is installed in the first outlet (6). A second baffle (23) is provided in the inlet pipe (4) above the sixth check valve (22). The second baffle (23) abuts against the sixth check valve (22) to keep the first outlet (6) blocked. When the pump head (3) is pressed, the outlet pipe (5) pushes open the second baffle (23), so that the sixth check valve (22) has room to move.

16. The leak-proof pump head according to claim 15, characterized in that... The sixth one-way valve (22) is integrally formed with the inlet pipe (4), and the sixth one-way valve (22) and the inlet pipe (4) are connected by a thin sheet. Initially, the sixth one-way valve (22) is located on the upper side of the second baffle (23). When the pump head (3) is pressed, the outlet pipe (5) breaks the thin sheet and pushes the sixth one-way valve (22) into the space between the first outlet (6) and the second baffle (23).

17. A leak-proof pump head, comprising a cover (1) installed at the container opening, wherein a liquid storage chamber (2) is provided inside the cover (1), and a resettable pump head (3) is slidably installed inside the liquid storage chamber (2), characterized in that... The pump head (3) is provided with an outlet pipe (5), and the liquid storage chamber (2) is provided with an inlet pipe (4). The inlet pipe (4) is connected to the outlet pipe (5) to form an outlet channel. The outlet pipe (5) is provided with a fifth outlet (24), and the inlet pipe (4) is provided with a sixth outlet (25). When the pump head (3) is not pressed, the fifth outlet (24) and the sixth outlet (25) are misaligned. When the pump head (3) is pressed, the fifth outlet (24) and the sixth outlet (25) are aligned.

18. The leak-proof pump head according to claim 17, characterized in that... The inlet pipe (4) is connected to the cover (1) by a thin sheet. The side wall of the outlet pipe (5) is provided with a hook hole (26). The inlet pipe (4) is provided with a hook part (27) corresponding to the hook hole (26). The hook part (27) can be slidably installed in the hook hole (26).

19. The leak-proof pump head according to claim 17, characterized in that... The upper end of the inlet pipe (4) is provided with a second spring sheet (28), and the outlet pipe (5) is provided with a second inclined surface (29) corresponding to the second spring sheet (28). When the pump head (3) is pressed, the second spring sheet (28) deforms along the second inclined surface (29).

20. The leak-proof pump head according to claim 17, characterized in that... The inlet pipe (4) is provided with a central protrusion (30) on the lower side of the sixth outlet (25). An annular groove (31) is formed between the central protrusion (30) and the inner wall of the inlet pipe (4). A second connecting hole is provided in the annular groove (31) to connect the sixth outlet (25) with the suction pipe (16). A sealing ring (32) is provided at the lower end of the outlet pipe (5). The sealing ring (32) is inserted into the annular groove (31) to block the second connecting hole.

21. The leak-proof pump head according to any one of claims 1-20, characterized in that... The container opening is provided with an external threaded portion on the outside, and the cover (1) is provided with an internal threaded portion corresponding to the external threaded portion, and the external threaded portion and the internal threaded portion are threadedly connected.

22. The leak-proof pump head according to any one of claims 10, 13, and 19, characterized in that, A reinforcing spring (39) is provided between the spring and the inner wall of the liquid storage chamber (2).

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