A waterproof, air-proof, and liquid-proof push-button pump

Abstract

This invention discloses a waterproof, gas-proof, and liquid-injection-proof press pump, comprising a pump body, a pump chamber, a one-way valve, a bottle cap, a pusher, and a pumping assembly. The pump body is provided with a gas injection hole, and the pump chamber is provided with a liquid-proof sealing ring for blocking the gas injection hole. The liquid-proof sealing ring is provided with a retaining ring that fits onto the outside of the upper pump rod. The upper pump rod is provided with a pressing step that can press against the retaining ring to press the liquid-proof sealing ring downwards and a flange that can pull the liquid-proof sealing ring upwards. As the upper pump rod springs upwards from the pressing state, the flange gets caught on the edge of the retaining ring hole, thereby pulling the liquid-proof sealing ring upwards and exposing the gas injection hole to start gas injection. As the upper pump rod continues to spring upwards, the piston rises, thereby compressing the cavity above the piston and pushing the air flow to quickly inject gas into the bottle until the piston presses down on the liquid-proof sealing ring and seals with the liquid-proof sealing ring, thereby resealing the gas injection hole and preventing liquid from entering and contaminating the spring during gas injection.

Description

[Technical Field]

[0001] This invention relates to a waterproof, air-proof, and liquid-proof push-button pump. [Background Technology]

[0002] To prevent the spring from rusting, existing emulsion pumps use an external spring in their suction assembly to isolate the emulsion from the spring. However, external water, such as water from showering or rinsing with a tap, can easily enter the spring and corrode it. During the air replenishment process, the water can easily enter the emulsion bottle through the air replenishment channel, contaminating the liquid and causing hygiene problems. To address this issue, a solution is disclosed in the invention patent CN216581924U, entitled "A Waterproof and Liquid-proof Press Pump with Anti-liquid Inlet in the Air Inlet." This solution involves placing a liquid-proof sealing ring above the piston to block the air inlet and prevent liquid from entering. When the piston springs up, it pushes the sealing ring upwards above the air inlet. When the piston is pressed down, the piston disengages from the sealing ring, creating an air inlet channel. However, this method suffers from a problem: when the piston is pressed down, the sudden increase in volume between the piston and the sealing ring can easily create a negative pressure, causing air to flow back from both the outside and inside the bottle. Air is only replenished when the pressure inside the chamber equals the pressure inside the bottle, and external air continues to flow in. This can lead to insufficient or slow air replenishment, and during rapid pumping, the resulting negative pressure can prevent effective air replenishment, causing the bottle to flatten.

[0003] This invention was made based on this situation. [Summary of the Invention]

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a waterproof and gas-proof press pump with good gas replenishment effect.

[0005] This invention is achieved through the following technical solution:

[0006] A waterproof, air-proof, and liquid-proof push-button pump includes a pump body, a pump chamber, and a locking cap. The pump chamber houses a pumping assembly consisting of an upper pump rod, a lower pump rod, a piston, a locking cap, and a spring. The spring is located above the piston. A one-way valve for liquid entry into the pump chamber is located at the lower end of the pump chamber. A push-button is connected to the upper end of the upper pump rod. An air inlet is located on the pump body between the piston and the locking cap. A liquid-proof sealing ring is provided in the pump chamber to block the air inlet. The upper and lower ends of the liquid-proof sealing ring are interference-fitted with the inner walls of the pump body above and below the air inlet, respectively, to form a seal. The sealing ring is provided with a retaining ring that fits onto the outside of the upper pump rod. The upper pump rod is provided with a pressing step that can press against the retaining ring and press the anti-liquid sealing ring downwards during its downward pressing. The upper pump rod is provided with a flange that can lock onto the edge of the retaining ring hole from below when it bounces up, thereby pulling the anti-liquid sealing ring upwards. The locking cover is located above the anti-liquid sealing ring and blocks the anti-liquid sealing ring from above after the anti-liquid sealing ring rises and the air inlet hole is exposed from the lower end of the anti-liquid sealing ring. Under the action of the spring, the upper pump rod continues to bounce upwards and disengages the flange from the retaining ring until the piston presses down on the anti-liquid sealing ring from below and forms a sealing connection with the anti-liquid sealing ring.

[0007] As described above, a waterproof, air-proof, and liquid-proof push-button pump has an outer sleeve integrally formed on the upper outer side of the upper pump rod, and an inner sleeve integrally formed inside the locking cover, extending above the locking cover. The outer sleeve is inserted into the inner sleeve. The spring is located within the space formed by the inner sleeve and the outer sleeve. A movable sleeve that can move up and down is fitted on the outer side of the inner sleeve. The push-button has a pull sleeve fitted on the outer side of the upper end of the movable sleeve. Anti-dislodgement structures are provided between the upper end of the movable sleeve and the pull sleeve, and between the lower end of the movable sleeve and the inner sleeve to prevent the inner sleeve from dislodging. The lock... The inner sleeve of the locking cover has a groove on the outside of the inner sleeve for the movable sleeve to fall into when the press head is pressed; or the upper pump rod has an outer sleeve integrally formed on the upper outer side facing downwards, the locking cover has an inner sleeve integrally formed extending above the locking cover, the outer sleeve is inserted into the inner side of the inner sleeve, the spring is located in the space formed by the inner sleeve and the outer sleeve, the press head has a water-proof sleeve fitted on the outside of the inner sleeve, when the press head is in the pop-up state, the lower end of the water-proof sleeve is fitted on the upper end of the inner sleeve, and the locking cover has a groove on the outside of the inner sleeve for the water-proof sleeve to fall into when the press head is pressed.

[0008] As described above, in a waterproof, air-proof, and liquid-proof press pump, when a movable sleeve that can move up and down is fitted on the outer side of the inner sleeve, an outer protruding ring is provided on the outer side of the upper port of the inner sleeve and the movable sleeve, and an inner protruding ring is provided on the inner side of the lower port of the pull sleeve and the movable sleeve. The outer protruding ring of the inner sleeve and the inner protruding ring of the movable sleeve cooperate to form an anti-dislodgement structure that prevents the movable sleeve from dislodging upward from the inner sleeve, and the inner protruding ring of the pull sleeve and the outer protruding ring of the movable sleeve cooperate to form an anti-dislodgement structure that prevents the movable sleeve from dislodging downward from the pull sleeve.

[0009] As described above, in a waterproof and airtight pump, when the push head is provided with a water-proof sleeve that fits over the outer side of the inner sleeve, the lower end of the water-proof sleeve is provided with a shrinking opening that narrows inward.

[0010] As described above, a waterproof and anti-air / liquid-entry press pump has a waterproof protruding ring on the outer sleeve that is interference-fitted with the inner sleeve to prevent water from entering.

[0011] As described above, a waterproof, air-proof, and liquid-inlet press pump has an external thread at the lower part of the outer sleeve and an internal thread on the lower inner side of the inner sleeve for threaded connection with the external thread.

[0012] As described above, a waterproof, air-proof, and liquid-proof press pump has a horizontally arranged baffle on the inner side of the middle of the liquid-proof sealing ring. The baffle has a through hole running vertically through it, and the retaining ring extends from the lower middle part of the baffle into the through hole.

[0013] Compared with the prior art, the present invention has the following advantages:

[0014] 1. In this invention, during the upward movement of the upper pump rod from the downward pressurized state, the flange engages with the edge of the retaining ring hole, thereby pulling the anti-liquid sealing ring upward and exposing the air inlet to begin air replenishment. As the upper pump rod continues to rise, the piston rises, compressing the cavity above the piston and pushing the airflow. Some of the air flows into the bottle from the air inlet, allowing the bottle to be quickly replenished with air. This continues until the piston presses down onto the anti-liquid sealing ring and seals it, thus resealing the air inlet. This prevents liquid from entering the bottle through the air inlet and contaminating the spring.

[0015] 2. The upper and lower ends of the anti-liquid sealing ring are respectively interference-fitted with the inner walls of the pump body above and below the air inlet to form a seal, preventing the contents from entering the pump chamber during transportation, while allowing air to be smoothly supplied into the bottle during use to prevent the bottle from collapsing.

[0016] 3. In this invention, when the upper pump rod springs up, the pulling sleeve pulls up the movable sleeve and connects it between the pulling sleeve and the inner sleeve. In the upright state, the pulling sleeve, movable sleeve, and inner sleeve form a water-blocking outer wall from top to bottom to prevent water from entering the inner side of the inner sleeve. Setting up the water-blocking outer wall can effectively prevent water from entering the spring location from the outside.

[0017] 4. The present invention can also be configured such that when the upper pump rod springs up, the lower end of the water-blocking sleeve is fitted over the outer side of the inner sleeve in the upright state. The water-blocking sleeve and the inner sleeve form a water-blocking outer wall from top to bottom to prevent water from entering the inner side of the inner sleeve. The lower part of the water-blocking sleeve is provided with a contraction opening that narrows inward, so that water will not flow into the inner cavity from top to bottom when spraying. The outer sleeve is provided with a waterproof protrusion that is interference-fitted with the inner sleeve to prevent water from entering, ensuring that water will not enter the spring cavity during the pressing process. [Attached Image Description]

[0018] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, wherein:

[0019] Figure 1 This is a cross-sectional view of the first embodiment of the waterproof, air-proof, and liquid-proof press pump of the present invention, which is locked when pressed to the bottom.

[0020] Figure 2 yes Figure 1 A magnified view of a section at point A in the middle;

[0021] Figure 3 This is a cross-sectional view of the first embodiment of the waterproof, air-proof, and liquid-proof push pump of the present invention in the pop-up state;

[0022] Figure 4 This is a cross-sectional view of a second embodiment of the waterproof, air-proof, and liquid-proof press pump of the present invention, which is locked when pressed to the bottom.

[0023] Figure 5 This is a cross-sectional view of a second embodiment of the waterproof, air-proof, and liquid-proof push-button pump of the present invention in the pop-up state.

Detailed Implementation Methods

[0024] The present invention will now be further described with reference to the accompanying drawings:

[0025] like Figures 1 to 5As shown, a waterproof, air-proof, and liquid-proof push-button pump includes a pump body 1, a pump chamber 2 on the pump body 1, a bottle cap 3 connected to the pump body 1, an upper pump rod 4 inside the pump chamber 2, a lower pump rod 5 connected to the lower end of the upper pump rod 4, a piston 6 sleeved on the outer side of the lower pump rod 5, a locking cap 7 connected to the pump body 1 to prevent the piston 6 from detaching upwards from the pump chamber 2, a spring 8 between the upper pump rod 4 and the locking cap 7 for lifting the upper pump rod 4 upwards, the spring 8 being located above the piston 6, a one-way valve 10 at the lower end of the pump chamber 2 for allowing liquid from the bottle to enter the pump chamber 2 when the piston 6 is pulled up, a push-button 9 connected to the upper end of the upper pump rod 4, an air inlet 11 on the pump body 1 located between the piston 6 and the locking cap 7, and a liquid-proof sealing ring 100 inside the pump chamber 2 for blocking the air inlet 11. The upper and lower ends are respectively press-fitted with the inner walls of the pump body 1 above and below the air inlet 11 to form a seal. The anti-liquid sealing ring 100 is provided with a retaining ring 101 that is sleeved on the outside of the upper pump rod 4. The upper pump rod 4 is provided with a pressing step 42 that can press against the retaining ring 101 and press the anti-liquid sealing ring 100 downward during its downward pressing. The upper pump rod 4 is provided with a flange 43 that can be locked from below at the edge of the retaining ring 101 hole when it bounces up, thereby pulling the anti-liquid sealing ring 100 upward. The locking cover 7 is located above the anti-liquid sealing ring 100 and blocks the anti-liquid sealing ring 100 from above after the anti-liquid sealing ring 100 rises and the air inlet 11 is exposed from the lower end of the anti-liquid sealing ring 101. Under the action of the spring 8, the upper pump rod 4 continues to bounce upward and the flange 43 is disengaged from the retaining ring 101 until the piston 6 presses down on the anti-liquid sealing ring 100 and is sealed to the anti-liquid sealing ring 100.

[0026] As the upper pump rod 4 springs upward from its depressed state, the flange 43 engages with the edge of the retaining ring 101 hole from below, thereby pulling the anti-liquid sealing ring 100 upward and exposing the air inlet 11 to begin air replenishment. The upper locking cap blocks the anti-liquid sealing ring, preventing it from rising further. Due to the elasticity of the anti-liquid sealing ring, the flange deforms the retaining ring, allowing it to pass through the retaining ring and continue rising, carrying the piston upward. The rising piston 6 compresses the cavity above the piston 6, pushing airflow. Some of this air flows into the bottle from the air inlet 11, allowing for rapid air replenishment until the piston 6 presses down on the anti-liquid sealing ring 100 and seals with it, thus resealing the air inlet 11. This prevents liquid from entering the bottle through the air inlet 11 and contaminating the spring.

[0027] In addition, the pump chamber 2 has a stepped platform that is larger at the top and smaller at the bottom, and the anti-liquid sealing ring is also larger at the top and smaller at the bottom. The air inlet is set at the stepped platform of the pump chamber 2. During the process of pressing the pump rod 4 down, the flange 43 gets stuck on the edge of the hole of the retaining ring 101 from above, thereby pressing the anti-liquid sealing ring 100 down. When the anti-liquid sealing ring 100 falls at the stepped platform of the pump chamber 2, it is blocked. During the continued pressing process, the flange deforms the retaining ring and passes through the retaining ring to continue to descend. It presses on the retaining ring through the lower step, thereby limiting the anti-liquid sealing ring at the stepped platform of the pump chamber 2 and forming a stable sealing state.

[0028] The upper and lower ends of the anti-liquid sealing ring are respectively press-fitted into the inner walls of the pump body above and below the air inlet to form a seal, preventing the contents from entering the pump chamber during transportation, while allowing air to be smoothly supplied into the bottle during use to prevent the bottle from collapsing.

[0029] The liquid-proof sealing ring 100 has a horizontally arranged baffle 102 on its inner side. The baffle 102 has a through hole running vertically through it. The retaining ring 101 extends from the lower middle part of the baffle 102 into the through hole, forming a simple structure. During the upward movement, the flange 43 passes over the retaining ring 101 and continues to rise because the baffle 102 is blocked by the locking cover 7.

[0030] like Figure 1 and 3 In one embodiment shown, an outer sleeve 41 is integrally formed on the upper outer side of the upper pump rod 4, and an inner sleeve 71 is integrally formed inside the locking cover 7, extending above the locking cover 7. The outer sleeve 41 is inserted into the inner side of the inner sleeve 71. The spring 8 is located in the space formed by the inner sleeve 71 and the outer sleeve 41. A movable sleeve 20 that can move up and down is fitted on the outer side of the inner sleeve 71. A pull sleeve 91 is provided on the upper outer side of the movable sleeve 20. Anti-dislodgement structures are provided between the upper end of the movable sleeve 20 and the pull sleeve 91, and between the lower end of the movable sleeve 20 and the inner sleeve 71, respectively, to prevent the inner sleeve 71 from dislodging. A drop groove 72 is provided inside the locking cover 7 on the outer side of the inner sleeve 71, into which the movable sleeve 20 falls when the pressing head 9 is pressed.

[0031] When the upper pump rod 4 pops up, the pulling sleeve 91 pulls up the movable sleeve 20 and connects it between the pulling sleeve 91 and the inner sleeve 71. In the upright state, the pulling sleeve 91, the movable sleeve 20 and the inner sleeve 71 form a water-blocking outer wall from top to bottom to prevent water from entering the inner side of the inner sleeve 71.

[0032] When the upper pump rod 4 moves downward, it drives the piston 6 to disengage from the anti-liquid seal ring 100, thereby forming an air supply channel connecting the air supply hole 11 between the outer sleeve 41, the inner sleeve 71, the piston 6 and the anti-liquid seal ring 100.

[0033] The inner sleeve 71 and the movable sleeve 20 are respectively provided with an outer protruding ring 73 on the outer side of their upper ports, and the pull sleeve 91 and the movable sleeve 20 are respectively provided with an inner protruding ring 92 on the inner side of their lower ports. The outer protruding ring 73 of the inner sleeve 71 and the inner protruding ring 92 of the movable sleeve 20 cooperate to form an anti-disengagement structure to prevent the movable sleeve 20 from disengaging upward from the inner sleeve 71. The inner protruding ring 92 of the pull sleeve 91 and the outer protruding ring 73 of the movable sleeve 20 cooperate to form an anti-disengagement structure to prevent the movable sleeve 20 from disengaging downward from the pull sleeve 91.

[0034] like Figure 4 and 5 In another embodiment shown, an outer sleeve 41 is integrally formed on the upper outer side of the upper pump rod 4, and an inner sleeve 71 is integrally formed inside the locking cover 7, extending above the locking cover 7. The outer sleeve 41 is inserted into the inner side of the inner sleeve 71. The spring 8 is located in the space formed by the inner sleeve 71 and the outer sleeve 41. The push head 9 is provided with a water-proof sleeve 93 that is fitted on the outer side of the inner sleeve 71. When the push head 9 is in the pop-up state, the lower end of the water-proof sleeve 93 is fitted on the upper end of the inner sleeve 71. The locking cover 7 is provided with a drop groove 72 located on the outer side of the inner sleeve 71, into which the water-proof sleeve 93 falls when the push head 9 is pressed.

[0035] The lower end of the water-proof sleeve 93 is provided with a shrinking opening 931 that narrows inward, which can better prevent water from entering between the water-proof sleeve 93 and the inner sleeve 71.

[0036] When water is sprayed from top to bottom, the water-proof sleeve 93 and the inner sleeve 71 work together to prevent water from flowing into the inner cavity. However, during the pressing process, a small amount of water may inevitably be introduced into the inner wall of the outer ring. To ensure that water does not enter the spring cavity where the spring is located, the outer sleeve 41 is provided with a waterproof protrusion 411 that is interference-fitted with the inner sleeve 71 to prevent water from entering.

[0037] When the upper pump rod 4 pops up, the lower end of the water-blocking sleeve 93 is fitted over the outer side of the inner sleeve 71. In the upright state, the water-blocking sleeve 93 and the inner sleeve 71 form a water-blocking outer wall from top to bottom to prevent water from entering the inner side of the inner sleeve 71.

[0038] The lower part of the outer sleeve 41 is provided with an external thread, and the lower inner side of the inner sleeve 71 is provided with an internal thread for threaded connection with the external thread.

Claims

1. A waterproof, air-proof, and liquid-proof push-button pump, comprising a pump body (1), a pump chamber (2), and a locking cap (3), wherein the pump chamber (2) is provided with a pumping assembly consisting of an upper pump rod (4), a lower pump rod (5), a piston (6), a locking cap (7), and a spring (8), wherein the spring (8) is located above the piston (6), and a one-way valve (10) for liquid to enter the pump chamber (2) is provided at the lower end of the pump chamber (2), a push-button (9) is connected to the upper end of the upper pump rod (4), and an air-filling hole (11) is provided on the pump body (1) between the piston (6) and the locking cap (7), characterized in that: The pump chamber (2) is provided with a liquid-proof sealing ring (100) for blocking the air inlet (11). The upper and lower ends of the liquid-proof sealing ring (100) are respectively press-fitted with the inner walls of the pump body (1) above and below the air inlet (11) to form a seal. The liquid-proof sealing ring (100) is provided with a retaining ring (101) that fits on the outside of the upper pump rod (4). The upper pump rod (4) is provided with a pressing step (42) that can press against the retaining ring (101) to press the liquid-proof sealing ring (100) downward during its downward pressing process. The upper pump rod (4) is provided with a step that can be pressed down from the bottom when it bounces up. The flange (43) is locked at the edge of the hole of the retaining ring (101) to pull the anti-liquid sealing ring (100) upward. The locking cover (7) is located above the anti-liquid sealing ring (100) and blocks the anti-liquid sealing ring (100) from above after the air inlet (11) is exposed from the lower end of the anti-liquid sealing ring (100) under the action of the spring (8). Under the action of the spring (8), the upper pump rod (4) continues to spring upward and the flange (43) is disengaged from the retaining ring (101) until the piston (6) presses down on the anti-liquid sealing ring (100) and seals the anti-liquid sealing ring (100).

2. A waterproof, air-proof, and liquid-inlet-proof push-button pump according to claim 1, characterized in that: The upper pump rod (4) has an outer sleeve (41) integrally formed on the outer side of its upper end, and an inner sleeve (71) integrally formed inside the locking cover (7) extending above the locking cover (7). The outer sleeve (41) is inserted into the inner sleeve (71). The spring (8) is located in the space formed by the inner sleeve (71) and the outer sleeve (41). The outer side of the inner sleeve (71) is fitted with a movable sleeve (20) that can move up and down. The push head (9) is provided with a pull sleeve (91) fitted on the outer side of the upper end of the movable sleeve (20). The upper end of the movable sleeve (20) and the pull sleeve (91) and the lower end of the movable sleeve (20) and the inner sleeve (71) are respectively provided with anti-dislodgement structures to prevent the inner sleeve (71) from dislodging. The locking cover (7) is provided with a drop groove (72) on the outer side of the inner sleeve (71) for the movable sleeve (20) to fall into when the push head (9) is pressed.

3. A waterproof, air-proof, and liquid-inlet-proof push-button pump according to claim 2, characterized in that: The inner sleeve (71) and the movable sleeve (20) are respectively provided with an outer protruding ring (73) on the outer side of the upper port, and the pull sleeve (91) and the movable sleeve (20) are respectively provided with an inner protruding ring (92) on the inner side of the lower port. The outer protruding ring (73) of the inner sleeve (71) and the inner protruding ring (92) of the movable sleeve (20) cooperate to form an anti-dislodgement structure to prevent the movable sleeve (20) from dislodging upward from the inner sleeve (71). The inner protruding ring (92) of the pull sleeve (91) and the outer protruding ring (73) of the movable sleeve (20) cooperate to form an anti-dislodgement structure to prevent the movable sleeve (20) from dislodging downward from the pull sleeve (91).

4. A waterproof, air-proof, and liquid-proof push-button pump according to claim 1, characterized in that: The upper pump rod (4) has an outer sleeve (41) integrally formed on the outer side of its upper end, and an inner sleeve (71) integrally formed inside the locking cover (7) extending above the locking cover (7). The outer sleeve (41) is inserted into the inner sleeve (71). The spring (8) is located in the space formed by the inner sleeve (71) and the outer sleeve (41). The push head (9) is provided with a water-proof sleeve (93) that is fitted on the outer side of the inner sleeve (71). When the push head (9) is in the pop-up state, the lower end of the water-proof sleeve (93) is fitted on the upper end of the inner sleeve (71). The locking cover (7) is provided with a drop groove (72) on the outer side of the inner sleeve (71) for the water-proof sleeve (93) to fall into when the push head (9) is pressed.

5. A waterproof, air-proof, and liquid-proof push-button pump according to claim 4, characterized in that: The lower end of the waterproof sleeve (93) is provided with a shrinkage opening (931) that shrinks inward.

6. A waterproof, air-proof, and liquid-proof push-button pump according to claim 4, characterized in that: The outer sleeve (41) is provided with a waterproof protrusion (411) that is interference-fitted with the inner sleeve (71) to prevent water from entering.

7. A waterproof, air-proof, and liquid-proof push-button pump according to any one of claims 2 to 6, characterized in that: The lower part of the outer sleeve (41) is provided with an external thread, and the lower inner side of the inner sleeve (71) is provided with an internal thread for threaded connection with the external thread.

8. A waterproof, air-proof, and liquid-proof push-button pump according to claim 1, characterized in that: The liquid-proof sealing ring (100) has a horizontally arranged baffle (102) on its inner side. The baffle (102) has a through hole that runs vertically through it. The retaining ring (101) extends from the lower middle part of the baffle (102) into the through hole.

Images