A pre-pressurized all-plastic spray pump

Abstract

This invention discloses a pre-compression all-plastic spray pump, comprising a push-button, an atomizing nozzle, a pump body, a spring, a bottle cap, a one-way valve, a locking element, and a pumping assembly consisting of an upper pump rod, a lower pump rod, and a piston, all made of plastic. The pump body has a pump chamber, with the upper end of the pump body fixed to the bottle cap. The locking element is fixed to the pump body and confines the pumping assembly within the pump chamber. The push-button is connected to the upper end of the upper pump rod, and the atomizing nozzle is mounted on the push-button. A liquid outlet channel from the pump body to the atomizing nozzle is provided between the push-button and the upper and lower pump rods. The lower pump rod is connected to the lower end of the upper pump rod. The piston is sleeved on the outside of the lower pump rod and elastically presses against the upper and lower pump rods, sealing the liquid outlet channel. The pump body has an air inlet hole. The spring presses against the push-button and the bottle cap, lifting the upper pump rod. The piston and the inner walls of the pump body above and below the air inlet hole form an interference fit to create a seal. The entire spray pump is made of plastic, making it energy-saving and environmentally friendly.

Description

[Technical Field]

[0001] This invention relates to a pre-compressed all-plastic spray pump. [Background Technology]

[0002] Existing spray pumps use glass beads for their check valves, while the springs in the suction components are usually metal springs, which are prone to corrosion and rust. Furthermore, the metal, glass, and plastic need to be separated before recycling, making recycling inconvenient.

[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 pre-compressed all-plastic spray pump with simple structure and easy recycling.

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

[0006] A pre-compressed all-plastic spray pump includes a push-button, an atomizing nozzle, a pump body, a spring, a locking cap, a one-way valve, a locking element, and a pumping assembly consisting of an upper pump rod, a lower pump rod, and a piston, all made of plastic. The pump body has a pump chamber. The upper end of the pump body is fixed to the locking cap. The locking element is fixed to the upper port of the pump body and serves to confine the pumping assembly within the pump chamber. The one-way valve is located at the lower part of the pump chamber and allows contents to enter the pump chamber. The locking cap has a central hole through which the upper pump rod passes. The push-button is connected to the upper end of the upper pump rod. The atomizing nozzle is mounted on the push-button. A liquid outlet channel from the pump body to the atomizing nozzle is provided between the push-button and the upper and lower pump rods. The lower pump rod is connected to the lower end of the upper pump rod. The piston is sleeved on the outside of the lower pump rod and elastically presses against the upper and lower pump rods. The piston presses against the lower pump rod and closes the liquid outlet channel. The pump body is provided with an air inlet. The spring presses against the push-button and the bottle cap to lift the upper pump rod. The piston and the inner wall of the pump body above and below the air inlet are interference-fitted to form a seal.

[0007] As described above, a pre-pressurized all-plastic spray pump has an upper sealing ring and a lower sealing ring on the piston, which are respectively pressurized to form a seal with the pump body wall located above and below the air inlet. An air inlet is provided between the upper pump rod and the bottle cap to communicate with the outside. When the upper pump rod moves downward, it drives the piston to move downward to expose the air inlet above the upper sealing ring, thereby forming an air inlet channel between the upper pump rod, the locking member and the piston, which communicates with the air inlet and the air inlet.

[0008] As described above, a pre-pressurized all-plastic spray pump has a support ring at the upper end of the piston, a pressure plate on the upper pump rod for pressing the support ring, and an elastic arm evenly distributed around the circumference connecting the support ring and the upper sealing ring.

[0009] As described above, in an all-plastic recyclable push-button pump, the elastic arm has an arc-shaped structure.

[0010] As described above, a pre-compressed all-plastic spray pump has a retaining ring on the inner wall of the piston that is interference-fitted with the outer wall of the lower pump rod. The piston has a downwardly extending convex ring. The lower pump rod has a conical platform that can be engaged with the edge of the convex ring from below to close the liquid outlet channel and pull the piston upward when the lower pump rod moves upward.

[0011] As described above, in a pre-pressurized all-plastic spray pump, the spring comprises two bowl-shaped support seats, one with an opening facing upwards and the other with an opening facing downwards, with a through hole extending vertically through the middle of the two support seats.

[0012] As described above, in a pre-pressurized all-plastic spray pump, the top of the bottle cap is provided with a guide sleeve that is fitted upwards inside the protective cap, and the upper outer side of the push head is integrally formed with a downward-facing outer sleeve. The outer sleeve is inserted into the inside of the guide sleeve, and the spring is located in the space formed by the guide sleeve and the outer sleeve and presses against the push head and the bottle cap.

[0013] As described above, in a pre-pressurized all-plastic spray pump, the outer side of the guide sleeve is detachably connected to a removable protective cover that can cover the nozzle on the inner side.

[0014] In the pre-pressurized all-plastic spray pump described above, the one-way valve is a pump ball.

[0015] As described above, a pre-pressurized all-plastic spray pump has a limiting part in the pump chamber to prevent the pump beads from detaching upwards from the pump chamber.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] 1. The entire spray pump of this invention is made of plastic, replacing the traditional metal springs and glass beads. When recycling the spray pump, it can be directly recycled and reshaped without disassembling and removing the springs and one-way valves, resulting in high production efficiency and energy saving and environmental protection.

[0018] 2. The pump body of this invention is provided with an air inlet hole. The piston is provided with an upper sealing ring and a lower sealing ring, which are respectively interference-fitted with the inner wall of the pump body located above and below the air inlet hole to form a seal. An air inlet hole communicating with the outside is provided between the upper pump rod and the locking cap. When the upper pump rod moves downward, it drives the piston to move downward so that the air inlet hole is exposed above the upper sealing ring, thereby forming an air inlet channel connecting the air inlet hole and the air inlet hole between the upper pump rod, the locking member, and the piston. The lower sealing ring is always interference-fitted with the pump body to form a seal to prevent liquid in the pump chamber from entering the air inlet hole during air inlet. When the upper pump rod moves upward, the lower pump rod drives the piston to move upward, and the upper sealing ring re-seals above the air inlet hole, closing the air inlet channel.

[0019] 3. The piston of this invention has a retaining ring on its inner wall that is interference-fitted with the outer wall of the lower pump rod. The piston also has a downwardly extending convex ring. The lower pump rod has a conical platform that, when moving upwards, can engage with the edge of the convex ring to close the liquid outlet channel and pull the piston upwards. When the lower pump rod springs up from its depressed state under the action of a spring, the piston's own elastic force releases, causing the convex ring to move downwards and quickly press against the conical platform to close the liquid outlet channel. The retaining ring remains sealed to the lower pump rod, preventing leakage between the piston and the lower pump rod. [Attached Image Description]

[0020] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, wherein:

[0021] Figure 1 This is a cross-sectional view of a pre-compressed all-plastic spray pump of the present invention in the pop-up state;

[0022] Figure 2 yes Figure 1 A magnified view of a section at point A in the middle;

[0023] Figure 3 This is a front view of the piston structure of a pre-compressed all-plastic spray pump according to the present invention;

[0024] Figure 4 This is a cross-sectional view of the piston structure of a pre-compressed all-plastic spray pump according to the present invention;

[0025] Figure 5 This is a perspective view of the piston structure of a pre-compressed all-plastic spray pump according to the present invention.

Detailed Implementation Methods

[0026] The present invention will now be further described with reference to the accompanying drawings:

[0027] like Figures 1 to 5As shown, a pre-pressurized all-plastic spray pump includes a pusher 1, an atomizing nozzle 2, a pump body 3, a spring 4, a bottle cap 9, a one-way valve 11, a locking element 12, and a pumping assembly composed of an upper pump rod 6, a lower pump rod 7, and a piston 8, all made of plastic. The pump body 3 contains a pump chamber 10. The upper end of the pump body 3 is fixed to the bottle cap 9. The locking element 12 is fixed to the upper port of the pump body 3 and is used to confine the pumping assembly within the pump chamber 10. The one-way valve 11 is located at the lower part of the pump chamber 10 and allows contents to enter the pump chamber 10. The bottle cap 9 has a central hole through which the upper pump rod 6 passes. The pusher 1 is connected to the upper pump rod 6. At the upper end, the atomizing nozzle 2 is mounted on the push head 1. A liquid outlet channel 13, leading from the pump body 3 to the atomizing nozzle 2, is provided between the push head 1 and the upper pump rod 6 and lower pump rod 7. The lower pump rod 7 is connected to the lower end of the upper pump rod 6. The piston 8 is sleeved on the outside of the lower pump rod 7 and elastically presses against the upper pump rod 6 and lower pump rod 7. The piston 8 presses against the lower pump rod 7 and closes the liquid outlet channel 13. The pump body 3 has an air inlet 14. The spring 4 presses against the push head 1 and the bottle cap 9, lifting the upper pump rod 6. The piston 8 and the inner walls of the pump body 3 above and below the air inlet 14 form an interference fit to create a seal. When the push head 1 is pressed, the upper pump rod 6 moves downwards along with the lower pump rod 7. Simultaneously, the piston 8 elastically deforms, causing the lower pump rod 7 to disengage downwards from the piston 8, opening the liquid outlet channel 13. The upper pump rod 6 continues downwards, pushing the piston 8 downwards to force the contents of the pump chamber 10 out through the liquid outlet channel 13. The entire spray pump is made of plastic, replacing the traditional metal springs and glass beads. When recycling the spray pump, there is no need to disassemble and remove the springs and check valves; it can be directly recycled and reshaped, resulting in high production efficiency and energy conservation and environmental protection.

[0028] like Figure 2 As shown, the piston 8 is provided with an upper sealing ring 82 and a lower sealing ring 83, which are respectively interference-fitted with the inner walls of the pump body 3 located above and below the air replenishment hole 14 to form a seal. An air inlet 15 communicating with the outside is provided between the upper pump rod 6 and the locking cap 9. When the upper pump rod 6 moves downward, it drives the piston 8 to move downward, exposing the air replenishment hole 14 above the upper sealing ring 82, thereby forming an air replenishment channel between the upper pump rod 6, the locking member 12, and the piston 8, connecting the air inlet 15 and the air replenishment hole 14. The lower sealing ring is always interference-fitted with the pump body to form a seal, preventing liquid in the pump chamber from entering the air replenishment hole during air replenishment. When the upper pump rod moves upward, the lower pump rod drives the piston upward, and the upper sealing ring re-seals above the air replenishment hole, closing the air replenishment channel.

[0029] like Figure 5 As shown, the piston 8 has a support ring 86 at its upper end, and the upper pump rod 6 has a pressure plate 61 for the support ring 86 to press against it. The support ring 86 and the upper sealing ring 82 are connected by elastic arms 87 that are evenly distributed around the circumference.

[0030] The elastic arm 87 has an arc-shaped structure.

[0031] like Figure 2 and 4 As shown, the piston 8 has a retaining ring 84 on its inner sidewall that is interference-fitted with the outer wall of the lower pump rod 7. The piston 8 has a convex ring 85 extending downward. The lower pump rod 7 has a conical platform 71 that can be locked from below at the edge of the convex ring 85 to close the liquid outlet channel 13 and pull the piston 8 upward when the lower pump rod 7 moves upward.

[0032] When the lower pump rod 7 springs up from its depressed state under the action of spring 4, the piston 8 releases its own elastic force, causing the convex ring 85 to move downwards and quickly press against the conical platform 71 to close the liquid outlet channel 13. The retaining ring 84 remains sealed to the lower pump rod 7 to prevent leakage between the piston 8 and the lower pump rod 7.

[0033] The spring 4 consists of two bowl-shaped support bases 42, one with an opening facing upwards and the other with an opening facing downwards. The middle of the two support bases 42 is provided with a through hole 41 that runs vertically through them.

[0034] The top of the bottle cap 9 is provided with a guide sleeve 91 that is fitted upwards inside the protective cap 5. The upper outer side of the push head 1 is integrally formed with a downward-facing outer sleeve 100. The outer sleeve 100 is inserted into the inside of the guide sleeve 91. The spring 4 is located in the space formed by the guide sleeve 91 and the outer sleeve 100 and presses against the push head 1 and the bottle cap 9.

[0035] The outer side of the guide sleeve 91 is detachably connected to a removable protective cover 5 that can cover the push head 1 on the inner side.

[0036] The one-way valve 11 is a pump ball.

[0037] like Figure 1 As shown, the pump ball is made of plastic and is lightweight. To prevent the pump ball from detaching from the pump chamber when the liquid is pressed in, the pump chamber 10 is provided with a limiting part 101 to restrict the pump ball from detaching from the pump chamber 10.

Claims

1. A pre-pressurized all-plastic spray pump, characterized in that: The device includes a pusher (1), an atomizing nozzle (2), a pump body (3), a spring (4), a bottle cap (9), a one-way valve (11), a locking element (12), and a pumping assembly consisting of an upper pump rod (6), a lower pump rod (7), and a piston (8), all made of plastic. The pump body (3) contains a pump chamber (10). The upper end of the pump body (3) is fixed to the bottle cap (9). The locking element (12) is fixed at the upper port of the pump body (3) and used to confine the pumping assembly within the pump chamber (10). The one-way valve (11) is located at the lower part of the pump chamber (10) and allows contents to enter the pump chamber (10). The bottle cap (9) has a central hole through which the upper pump rod (6) passes. The pusher (1) is connected to the upper end of the upper pump rod (6). The atomizing nozzle... (2) Installed on the pusher (1), the pusher (1) and the upper pump rod (6) and the lower pump rod (7) are provided with a liquid outlet channel (13) from the pump body (3) to the atomizing nozzle (2). The lower pump rod (7) is connected to the lower end of the upper pump rod (6). The piston (8) is sleeved on the outside of the lower pump rod (7) and elastically presses against the upper pump rod (6) and the lower pump rod (7). The piston (8) presses against the lower pump rod (7) and closes the liquid outlet channel (13). The pump body (3) is provided with an air inlet (14). The spring (4) presses against the pusher (1) and the bottle cap (9) to lift the upper pump rod (6). The piston (8) and the pump body (3) are located above and below the air inlet (14) with an interference fit to form a seal.

2. The pre-compressed all-plastic spray pump according to claim 1, characterized in that: The piston (8) is provided with an upper sealing ring (82) and a lower sealing ring (83) that are respectively press-fitted to the inner wall of the pump body (3) located above and below the air inlet (14) to form a seal. An air inlet (15) communicating with the outside is provided between the upper pump rod (6) and the bottle cap (9). When the upper pump rod (6) moves downward, it drives the piston (8) to move downward so that the air inlet (14) is exposed above the upper sealing ring (82), thereby forming an air inlet channel communicating with the air inlet (15) and the air inlet (14) between the upper pump rod (6), the locking member (12) and the piston (8).

3. A pre-compressed all-plastic spray pump according to claim 2, characterized in that: The piston (8) is provided with a support ring (86) at its upper end, and the upper pump rod (6) is provided with a pressure plate (61) for the support ring (86) to press against it. An elastic arm (87) is evenly distributed around the circumference between the support ring (86) and the upper sealing ring (82).

4. A pre-compressed all-plastic spray pump according to claim 3, characterized in that: The elastic arm (87) has an arc-shaped structure.

5. A pre-compressed all-plastic spray pump according to any one of claims 2 to 4, characterized in that: The piston (8) has a retaining ring (84) on its inner side wall that is interference-fitted with the outer wall of the lower pump rod (7). The piston (8) has a convex ring (85) extending downward. The lower pump rod (7) has a conical platform (71) that can be locked from below at the edge of the convex ring (85) to close the liquid outlet channel (13) and pull the piston (8) upward when the lower pump rod (7) moves upward.

6. A pre-compressed all-plastic spray pump according to claim 1, characterized in that: The spring (4) consists of two bowl-shaped support seats (42) with one opening facing upward and the other opening facing downward. The middle of the two support seats (42) is provided with a through hole (41) that runs vertically through the middle.

7. A pre-compressed all-plastic spray pump according to claim 1, characterized in that: The top of the bottle cap (9) is provided with a guide sleeve (91) that is fitted upwards inside the protective cap (5). The upper outer side of the pusher (1) is integrally formed with a downward-facing outer sleeve (100). The outer sleeve (100) is inserted into the inside of the guide sleeve (91). The spring (4) is located in the space formed by the guide sleeve (91) and the outer sleeve (100) and presses against the pusher (1) and the bottle cap (9).

8. A pre-compressed all-plastic spray pump according to claim 7, characterized in that: The outer side of the guide sleeve (91) is detachably connected to a removable protective cover (5) that can cover the push head (1) on the inside.

9. A pre-compressed all-plastic spray pump according to claim 1, characterized in that: The one-way valve (11) is a pump ball.

10. A pre-compressed all-plastic spray pump according to claim 9, characterized in that: The pump chamber (10) is provided with a limiting part (101) for preventing the pump ball from detaching upward from the pump chamber (10).

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