A hand-operated spray pump

Abstract

The present invention discloses a hand-pressed spray pump, which relates to the technical field of spray components; it includes a pump body, a sealing ring located at the bottom end of the pump body, and a sealing ball located at the bottom end of the pump body. The sealing ball is located above the sealing ring. It also includes a lower piston inserted at the upper end of the pump body, an upper piston sleeved on the upper end of the lower piston, and a spring located inside the pump body for driving the lower piston to move away from the pump body. A through hole is provided at the upper end of the upper piston. The lower end of the lower piston is a lower sealing portion that fits the inner wall of the pump body, and the lower end of the upper piston is an upper sealing portion that fits the inner wall of the pump body. An annular air-permeable groove is provided on the inner wall of the pump body between the upper sealing portion and the lower sealing portion. A hole is provided on the pump body between the air-permeable groove and the lower sealing portion. An annular liquid-permeable groove is provided on the pump body between the lower sealing portion and the sealing ball. The present invention has no water dripping phenomenon and has a moderate spraying force.

Description

Technical Field

[0001] The present invention belongs to the technical field of spray components, and particularly relates to a hand-pressed spray pump. Background Art

[0002] Sprays are used in fields such as cosmetics. The spray pump is a key component among them. After the traditional spray pump is pressed, the liquid in the pump body is ejected. During the ejection process, the pressure in the pump body gradually decreases. Later, due to insufficient pressure in the pump body, the liquid cannot be atomized, resulting in a dripping phenomenon. In addition, the traditional spray pump uses a spring as a pressure-increasing device, and the ejection force is too strong. Summary of the Invention

[0003] The purpose of the present invention is to overcome the disadvantages of the existing technology, such as the dripping phenomenon and too strong ejection force, and to provide a hand-pressed spray pump that has no dripping phenomenon and a moderate ejection force.

[0004] To achieve the above purpose, the present invention adopts the following technical solutions:

[0005] A hand-pressed spray pump includes a pump body, a sealing ring located at the bottom end of the pump body, and a sealing ball located at the bottom end of the pump body. The sealing ball is located above the sealing ring. It also includes a lower piston inserted into the upper end of the pump body, an upper piston sleeved on the upper end of the lower piston, and a spring located in the pump body for driving the lower piston to move away from the pump body. A through hole is provided at the upper end of the upper piston. The lower end of the lower piston is a lower sealing portion that fits the inner wall of the pump body. The lower end of the upper piston is an upper sealing portion that fits the inner wall of the pump body. An annular air-permeable groove is provided on the inner wall of the pump body between the upper sealing portion and the lower sealing portion. A hole is provided in the pump body between the air-permeable groove and the lower sealing portion. An annular liquid-permeable groove is provided in the pump body between the lower sealing portion and the sealing ball. During the process of pressing down the upper piston, the liquid goes out through the through hole, and the outside air enters the bottle through the hole, preventing the pressure in the bottle from being too low. The remaining liquid in the pump body enters the bottle through the hole, avoiding the dripping phenomenon. In addition, the present invention discharges the liquid in the form of the reaction force of the liquid, and the ejection force is moderate.

[0006] Preferably, the pump body includes an upper piston pipe section, a lower piston pipe section, and a liquid suction section that are arranged coaxially from top to bottom. The inner diameter of the upper piston pipe section is larger than that of the lower piston pipe section. The inner diameter of the lower piston pipe section is larger than that of the liquid suction section. The upper sealing portion is slidably connected in the upper piston pipe section. The lower sealing portion is slidably connected in the lower piston pipe section. The hole is located at the bottom end of the upper piston pipe section. The sealing ring and the sealing ball are located in the liquid suction section. The structure is simple and convenient for installation.

[0007] Preferably, a bottle cap is also sleeved on the upper piston pipe section. The bottle cap includes a screw ring with internal threads and an inwardly folded inner flange located on the upper end face of the screw ring. The pump body further includes an outwardly folded outer flange located at the upper end of the upper piston pipe section. The outer flange abuts against the lower side of the inner flange, and the upper piston passes through the inner flange. This facilitates installation on the bottle. Meanwhile, the outer flange is squeezed against the inner flange by the bottle mouth to achieve sealing, and the structure is simple.

[0008] Preferably, the pump body is an integrally formed structure, which is convenient for production.

[0009] Preferably, an annular clamping protrusion is fixedly connected to the inner wall of the screw ring below the outer flange. The cross-section of the clamping protrusion is arc-shaped. The bottle cap and the pump body are installed in a clamping manner.

[0010] Preferably, a limiting cylinder is fixedly connected to the upper side of the inner flange. A connecting seat is inserted into the upper end of the limiting cylinder. A limiting protrusion is provided at the upper end of the inner wall of the limiting cylinder. A second limiting protrusion is provided at the lower end of the outer wall of the connecting seat. The connecting seat is slidably connected to the limiting cylinder. The second limiting protrusion is located below the limiting protrusion. A liquid outlet is provided on the connecting seat. The upper end of the upper piston is inserted into the lower end of the connecting seat and fixedly connected to the connecting seat. The connecting seat is used to connect the pressing head.

[0011] Preferably, the connecting seat includes a sliding sleeve and an annular support plate fixedly connected to the inner wall of the sliding sleeve. The second limiting protrusion is located at the lower end of the sliding sleeve. An annular first clamping edge and a second clamping edge are fixedly connected to the upper end of the outer wall of the upper piston. The lower edge of the first clamping edge is fixedly connected to the upper piston. The upper edge of the second clamping edge is fixedly connected to the upper piston. The first clamping edge is located above the second clamping edge. The outer diameter of the first clamping edge gradually increases from bottom to top. The outer diameter of the second clamping edge gradually decreases from bottom to top. The upper edge of the first clamping edge abuts against the lower side of the support plate. Both the first clamping edge and the second clamping edge are in interference fit with the sliding sleeve. A chamfer is provided at the lower end of the inner wall of the sliding sleeve. The chamfer facilitates installation.

[0012] Preferably, the inner wall of the upper piston is located on a conical surface, and the outer wall of the lower piston is located on another conical surface. The lower piston is in interference fit with the upper piston, which is convenient for installation.

[0013] Preferably, a spring seat is provided inside the lower piston. The lower end of the spring seat is connected to the upper end of the liquid suction section. The upper end of the spring abuts against the lower piston. The spring is sleeved on the spring seat. The sealing ball is located between the spring seat and the sealing ring. The spring seat is used to guide the spring. Additionally, the spring seat is used for the limit of the sealing ball.

[0014] The beneficial effects of the present invention are as follows: There is no water dripping phenomenon in the present invention, and the spraying force is moderate; it is convenient for installation and has a simple structure. Description of the Drawings

[0015] Figure 1Schematic diagram of the present invention;

[0016] Figure 2 Schematic diagram showing that when the upper sealing part moves to the air-permeable groove, the outside atmosphere passes through the holes;

[0017] Figure 3 Schematic diagram showing that when the lower sealing part moves to the liquid-permeable groove, the liquid in the pump body passes through the holes.

[0018] In the figure: pump body 1, sealing ball 2, lower piston 3, spring 4, lower sealing part 5, upper sealing part 6, air-permeable groove 7, holes 8, liquid-permeable groove 9, sealing ring 10, upper piston pipe section 11, lower piston pipe section 12, liquid suction section 13, outward flanging 14, bottle cap 15, screw ring 16, inward flanging 17, limiting cylinder 18, connecting seat 19, limiting protrusion 20, second limiting protrusion 21, liquid outlet 22, upper piston 23, through hole 24, clamping protrusion 25, sliding sleeve 26, support plate 27, first clamping edge 28, second clamping edge 29, chamfer 31, spring seat 32. Detailed implementation manners

[0019] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation manners:

[0020] Embodiment:

[0021] See Figures 1 to 3, a hand-pressed spray pump, comprising a pump body 1, a sealing ring 10 at the bottom end of the pump body 1, and a sealing ball 2 at the bottom end of the pump body 1. The sealing ball 2 is located above the sealing ring 10. It further includes a lower piston 3 inserted at the upper end of the pump body 1, an upper piston 23 sleeved on the upper end of the lower piston 3, and a spring 4 located inside the pump body 1 for driving the lower piston 3 to move away from the pump body 1. The inner wall of the upper piston 23 is located on a conical surface, and the outer wall of the lower piston 3 is located on another conical surface. The lower piston 3 and the upper piston 23 are in interference fit; a spring seat 32 is provided inside the lower piston 3. The lower end of the spring seat 32 is connected to the upper end of the liquid suction section 13. The upper end of the spring 4 abuts against the lower piston 3, and the spring 4 is sleeved on the spring seat 32. The sealing ball 2 is located between the spring seat 32 and the sealing ring 10; a through hole 24 is provided at the upper end of the upper piston 23. The lower end of the lower piston 3 is a lower sealing portion 5 that fits against the inner wall of the pump body 1, and the lower end of the upper piston 23 is an upper sealing portion 6 that fits against the inner wall of the pump body 1. An annular air-permeable groove 7 is provided on the inner wall of the pump body 1 between the upper sealing portion 6 and the lower sealing portion 5. A hole 8 is provided in the pump body 1 between the air-permeable groove 7 and the lower sealing portion 5. An annular liquid-permeable groove 9 is provided in the pump body 1 between the lower sealing portion 5 and the sealing ball 2; the pump body 1 includes an upper piston pipe section 11, a lower piston pipe section 12, and a liquid suction section 13 that are arranged in sequence from top to bottom and coaxially. The inner diameter of the upper piston pipe section 11 is greater than the inner diameter of the lower piston pipe section 12, and the inner diameter of the lower piston pipe section 12 is greater than the inner diameter of the liquid suction section 13. The upper sealing portion 6 is slidably connected inside the upper piston pipe section 11, and the lower sealing portion 5 is slidably connected inside the lower piston pipe section 12. The hole 8 is located at the bottom end of the upper piston pipe section 11. The sealing ring 10 and the sealing ball 2 are located inside the liquid suction section 13; a bottle cap 15 is further sleeved on the upper piston pipe section 11. The bottle cap 15 includes a screw ring 16 with internal threads and an inwardly folded inner flange 17 on the upper end face of the screw ring 16. The pump body 1 further includes an outwardly folded outer flange 14 at the upper end of the upper piston pipe section 11. The outer flange 14 abuts against the lower side of the inner flange 17. The upper piston 23 passes through the inner flange 17; an annular clamping protrusion 25 is fixedly connected to the inner wall of the screw ring 16 below the outer flange 14. The cross-section of the clamping protrusion 25 is circular arc-shaped; the pump body 1 is an integrally formed structure; a limiting cylinder 18 is fixedly connected above the inner flange 17. A connecting seat 19 is inserted into the upper end of the limiting cylinder 18. A limiting protrusion 20 is provided at the upper end of the inner wall of the limiting cylinder 18. A second limiting protrusion 21 is provided at the lower end of the outer wall of the connecting seat 19. The connecting seat 19 is slidably connected to the limiting cylinder 18. The second limiting protrusion 21 is located below the limiting protrusion 20. A liquid outlet 22 is provided on the connecting seat 19. The upper end of the upper piston 23 is inserted into the lower end of the connecting seat 19 and is fixedly connected to the connecting seat 19;The connecting seat 19 includes a sliding sleeve 26 and an annular support plate 27 fixedly connected to the inner wall of the sliding sleeve 26. The second limiting protrusion 21 is located at the lower end of the sliding sleeve 26. An annular first clamping edge 28 and a second clamping edge 29 are fixedly connected to the upper end of the outer wall of the upper piston 23. The lower edge of the first clamping edge 28 is fixedly connected to the upper piston 23, and the upper edge of the second clamping edge 29 is fixedly connected to the upper piston 23. The first clamping edge 28 is located above the second clamping edge 29. The outer diameter of the first clamping edge 28 gradually increases from bottom to top, and the outer diameter of the second clamping edge 29 gradually decreases from bottom to top. The upper edge of the first clamping edge 28 abuts against the lower side surface of the support plate 27. The first clamping edge 28 and the second clamping edge 29 are both in interference fit with the sliding sleeve 26. A chamfer 31 is provided at the lower end of the inner wall of the sliding sleeve 26.;

[0022] Principle of the embodiment:

[0023] The lower piston 3, the lower piston pipe section 12, and the sealing ball 2 form a chamber. The spiral ring 16 is threadedly connected to the bottle filled with liquid. The outer turned edge 14 of the bottle mouth abuts against the inner turned edge 17. When in use, the connecting seat 19 is pressed downward, and the upper sealing part 6 and the lower sealing part 5 descend synchronously. The pressure in the chamber increases, and liquid is discharged under the reaction force of the liquid. The liquid in the chamber is sprayed out in an atomized form from the liquid outlet 22. When the upper sealing part 6 slides downward to the air permeable groove 7, there is a gap between the upper sealing part 6 and the air permeable groove 7. The outside air enters the bottle through the air permeable groove 7 and the hole 8 to prevent the pressure in the bottle from being too low. In addition, when the upper sealing part 6 continues to slide downward after passing through the air permeable groove 7, when the lower sealing part 5 slides downward to the liquid permeable groove 9, at this time, the pressure in the chamber is already very small. To prevent dripping, the remaining liquid in the chamber flows through the liquid permeable groove 9 and the hole 8 and then drains into the bottle to prevent dripping.

[0024] After the hand releases the connecting seat 19, the spring elongates, and the upper piston 23 and the lower piston 3 move upward. The pressure in the chamber decreases, and the sealing ball 2 disengages from the sealing ring 10. The liquid enters the chamber from the bottle through the liquid suction section 13 for the next use.

Claims

1. A hand-pressed spray pump, comprising a pump body, a sealing ring located at the bottom end of the pump body, and a sealing ball located at the bottom end of the pump body, the sealing ball being located above the sealing ring. It is characterized in that it further comprises a lower piston inserted at the upper end of the pump body, an upper piston sleeved on the upper end of the lower piston, and a spring located inside the pump body for driving the lower piston to move away from the pump body. A through hole is provided at the upper end of the upper piston. The lower end of the lower piston is a lower sealing portion that fits against the inner wall of the pump body. The lower end of the upper piston is an upper sealing portion that fits against the inner wall of the pump body. An annular air-permeable groove is provided on the inner wall of the pump body between the upper sealing portion and the lower sealing portion. A hole is provided in the pump body between the air-permeable groove and the lower sealing portion. An annular liquid-permeable groove is provided in the pump body between the lower sealing portion and the sealing ball.

2. A hand-pressed spray pump according to claim 1, It is characterized in that the pump body comprises an upper piston pipe section, a lower piston pipe section, and a liquid suction section that are arranged in sequence from top to bottom and coaxially. The inner diameter of the upper piston pipe section is larger than that of the lower piston pipe section. The inner diameter of the lower piston pipe section is larger than that of the liquid suction section. The upper sealing portion is slidably connected inside the upper piston pipe section. The lower sealing portion is slidably connected inside the lower piston pipe section. The hole is located at the bottom end of the upper piston pipe section. The sealing ring and the sealing ball are located inside the liquid suction section.

3. A hand-pressed spray pump according to claim 2, It is characterized in that a bottle cap is further sleeved on the upper piston pipe section. The bottle cap comprises a screw ring provided with internal threads and an inwardly folded inner flange located on the upper end face of the screw ring. The pump body further comprises an outwardly folded outer flange located at the upper end of the upper piston pipe section. The outer flange abuts against the lower side of the inner flange. The upper piston passes through the inner flange.

4. A hand-pressed spray pump according to claim 3, It is characterized in that the pump body is an integrally formed structure.

5. A hand-pressed spray pump according to claim 3, It is characterized in that an annular clamping protrusion is fixedly connected to the inner wall of the screw ring below the outer flange. The cross section of the clamping protrusion is arc-shaped.

6. A hand-pressed spray pump according to claim 3, It is characterized in that a limiting cylinder is fixedly connected to the upper side of the inner flange. A connecting seat is inserted into the upper end of the limiting cylinder. A limiting protrusion is provided at the upper end of the inner wall of the limiting cylinder. A second limiting protrusion is provided at the lower end of the outer wall of the connecting seat. The connecting seat is slidably connected to the limiting cylinder. The second limiting protrusion is located below the limiting protrusion. A liquid outlet is provided on the connecting seat. The upper end of the upper piston is inserted into the lower end of the connecting seat and fixedly connected to the connecting seat.

7. A hand-pressed spray pump according to claim 6, It is characterized in that The connecting seat includes a sliding sleeve and an annular support plate fixedly connected to the inner wall of the sliding sleeve. The second limiting protrusion is located at the lower end of the sliding sleeve. The upper end of the outer wall of the upper piston is fixedly connected with an annular first clamping edge and a second clamping edge. The lower edge of the first clamping edge is fixedly connected to the upper piston, and the upper edge of the second clamping edge is fixedly connected to the upper piston. The first clamping edge is located above the second clamping edge. The outer diameter of the first clamping edge gradually increases from bottom to top, and the outer diameter of the second clamping edge gradually decreases from bottom to top. The upper edge of the first clamping edge abuts against the lower side of the support plate. Both the first clamping edge and the second clamping edge are in interference fit with the sliding sleeve. A chamfer is provided at the lower end of the inner wall of the sliding sleeve.

8. A hand-pressed spray pump according to claim 1, characterized in that, the inner wall of the upper piston is located on a conical surface, the outer wall of the lower piston is located on another conical surface, and the lower piston is in interference fit with the upper piston.

9. A hand-pressed spray pump according to claim 2, characterized in that, a spring seat is provided in the lower piston. The lower end of the spring seat is connected to the upper end of the liquid suction section. The upper end of the spring abuts against the lower piston. The spring is sleeved on the spring seat. The sealing ball is located between the spring seat and the sealing ring.

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