Atomizing pump

Abstract

The utility model discloses an atomizing pump which comprises a pump body, a piston piece arranged in the pump body, a piston rod matched with the inner wall of the piston piece and a pressing head, the outer wall of the piston piece and the inner wall of the pump body form dynamic sealing, and a fluid path extending in the axial direction is arranged in the piston rod. A liquid inlet hole communicated with the fluid path is formed in the side wall of the lower end of the piston rod and located in the piston piece, the upper end of the piston rod is sleeved with a piston seat, the piston seat is detachably connected with a pressing head, the pressing head is provided with a liquid outlet channel communicated with the fluid path and a spray head communicated with the liquid outlet channel, and the piston seat is sleeved with a first spring; the periphery of the lower end of the piston rod is sleeved with a second spring, the second spring is located above the piston piece, the upper end of the second spring abuts against the lower end face of the piston seat, the lower end of the second spring abuts against the upper end face of the piston piece, and the second spring is used for providing elastic force for promoting the piston piece to move downwards. The problem that an existing atomizing pump is poor in atomizing effect is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of sprayers, in particular to a spray pump. Background Art

[0002] Spray pump heads are a very common accessory for liquid containers in the cosmetics, detergents, and household goods sectors, such as plant cultivation. They are used to rapidly release the liquid in the bottle through a small orifice by pressing it. The pressure near the orifice is low, while the air pressure above the liquid surface in the container is high. The liquid rises along a thin tube below the orifice and flows out from the upper end of the tube. After being impacted by the airflow, it disperses into the air as a spray, forming a small airborne suspension. The return spring of existing spray pump heads is typically located within the pump chamber, where it comes into contact with the liquid. This contamination is unsanitary. Furthermore, existing sprayers often suffer from unsatisfactory atomization during use due to design flaws. Furthermore, existing spray pump heads are complex in structure, lack flexibility, and their numerous components lead to high production costs, reducing the product's market competitiveness. Therefore, further improvements are needed for existing spray pumps. Utility Model Content

[0003] In view of the above defects in the prior art, the utility model provides a spray pump to solve the defect of the existing sprayer that the atomization effect is not ideal.

[0004] The utility model is implemented by the following technical solutions:

[0005] A spray pump comprises a pump body, a piston member arranged in the pump body, a piston rod cooperating with the inner wall of the piston member, and a pressing head for applying force to the piston rod in the axial direction, the piston member divides the interior of the pump body into an upper chamber and a lower chamber, the outer wall of the piston member forms a dynamic seal with the inner wall of the pump body and can move axially relative to the pump body, the piston rod has a fluid path extending axially inside, a liquid inlet hole communicating with the fluid path is provided on the side wall of the lower end of the piston rod, and the liquid inlet hole is located inside the piston member, a piston seat is sleeved on the outer side of the upper end of the piston rod, the piston seat is detachably connected to the pressing head, and the pressing head is provided with a fluid path communicating with the fluid path The liquid outlet channel and the nozzle connected to the liquid outlet channel, the piston seat is provided with a first spring on the outside, the piston rod is provided with a second spring on the outside, and the second spring is located above the piston member, the upper end of the second spring is against the lower end surface of the piston seat, and the lower end of the second spring is against the upper end surface of the piston member, the second spring is used to provide an elastic force that causes the piston member to move downward, and when the first spring is pressed and compressed to the air pressure in the pump body is greater than the elastic force, the piston member moves upward to form a fluid gap between the inner wall of the lower end of the piston member and the outer wall of the lower end of the piston rod, so that the lower chamber is connected to the liquid inlet hole.

[0006] Furthermore, an annular groove is recessed inwardly on the inner wall of the piston, and the liquid inlet hole is communicated with the annular groove.

[0007] Furthermore, the outer wall of the lower end of the piston rod is formed as an outer conical table with an outer diameter gradually increasing from top to bottom, the inner wall of the lower end of the piston member is formed as an inner conical table that matches the outer conical table, and the cone angle of the inner circumferential wall of the lower end of the piston member is greater than the cone angle of the lower end of the piston rod.

[0008] Furthermore, the inner top surface of the pressing head has a first connecting portion extending downward, the liquid outlet channel is formed inside the first connecting portion, and the piston seat is provided with a connecting inner hole threadedly connected to the first connecting portion.

[0009] Furthermore, a mounting hole for mounting the nozzle is provided on one side of the press head, and the nozzle is connected to the mounting hole in a threaded manner.

[0010] Furthermore, it also includes a cover body and a connecting piece, the cover body accommodates the pump body part inside, the pressing head is arranged on the cover body for up and down movement, the cover body is provided with an opening, the connecting piece is installed at the opening, the connecting piece has a second connecting part extending downward to the upper chamber, and the inner wall of the pump body is sealed with the outer wall of the second connecting part.

[0011] Furthermore, an annular groove is provided on the inner wall of the pump body, and an annular rib matching with the annular groove is provided on the outer wall of the second connecting portion.

[0012] Furthermore, the second connecting portion has a through hole therein, the piston seat has a third connecting portion extending downward, the diameter of the through hole is larger than the outer diameter of the third connecting portion, the second spring is accommodated in the through hole, and the upper end of the second spring is against the lower end surface of the third connecting portion, and the lower end of the second spring is against the upper end surface of the piston member.

[0013] Furthermore, the upper end surface of the cover body has a downwardly recessed guide groove, and the pressing head can move axially along the guide groove.

[0014] Furthermore, a gasket is provided on the outer periphery of the upper end of the pump body.

[0015] Compared with the prior art, the beneficial effects of the present invention include at least:

[0016] The utility model is provided with a second spring for causing the piston to move downward, and when the air pressure in the pump body is compressed by pressing the first spring to be greater than the elastic force, the piston moves upward to form a fluid gap between the inner wall of the lower end of the piston and the outer wall of the lower end of the piston rod, thereby connecting the lower chamber with the liquid inlet hole. The liquid flows into the fluid path from the liquid inlet hole at a high speed and is ejected from the nozzle through the liquid outlet channel. Since the pressure is relatively high, it is sufficient to spray the liquid in the lower chamber in the form of a spray, thereby achieving a better spray effect. Since the second spring is located in the upper chamber, it will not come into contact with the liquid, and can avoid corrosion of the second spring while achieving continuous spraying, thereby increasing the service life. By detachably connecting the push head and the piston seat, it is convenient to replace push heads of different specifications, and the flexibility is strong. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of a spray pump provided by an embodiment of the present utility model;

[0018] Figure 2 This is one of the cross-sectional views of the spray pump provided by the embodiment of the present utility model;

[0019] Figure 3 This is the second cross-sectional view of the spray pump provided by the embodiment of the present utility model;

[0020] Figure 4 is a cross-sectional view of a pressing head provided by an embodiment of the present utility model;

[0021] Figure 5 This is a cross-sectional view of a piston seat provided by an embodiment of the present utility model;

[0022] Figure 6This is a cross-sectional view of a pump body provided by an embodiment of the present utility model;

[0023] Figure 7 is a cross-sectional view of a connector provided by an embodiment of the present utility model;

[0024] Figure 8 is a cross-sectional view of a piston portion provided by an embodiment of the present utility model;

[0025] In the figure: 1. cover body; 11. guide groove; 2. press head; 21. nozzle; 22. first connecting part; 23. liquid outlet channel; 24. mounting hole; 3. piston seat; 31. connecting inner hole; 32. third connecting part; 33. annular flange; 34. plug-in through hole; 4. pump body; 41. lower chamber; 42. liquid inlet; 43. valve; 44. gasket; 45. annular groove; 5. connecting part; 51. second connecting part; 52. through hole; 6. piston part; 61. annular groove; 62. inner conical table; 7. piston rod; 71. fluid path; 72. liquid inlet; 73. outer conical table; 8. first spring; 9. second spring. DETAILED DESCRIPTION

[0026] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided to make this disclosure more comprehensive and complete and to fully convey the concepts of the example embodiments to those skilled in the art. Identical reference numerals in the figures denote identical or similar structures, and thus repeated descriptions thereof will be omitted.

[0027] The words expressing positions and directions described in this utility model are all explained with reference to the accompanying drawings as examples, but they can be changed as needed, and all such changes are included in the protection scope of this utility model.

[0028] like Figures 1-8As shown, a spray pump provided by the present invention includes a pump body 4, a piston member 6 arranged in the pump body 4, a piston rod 7 cooperating with the inner wall of the piston member 6, and a pressing head 2 for applying force to the piston rod 7 in the axial direction. The piston member 6 divides the interior of the pump body 4 into an upper chamber and a lower chamber 41. The outer wall of the piston member 6 forms a dynamic seal with the inner wall of the pump body 4 and can move axially relative to the pump body 4. The piston rod 7 has a fluid path 71 extending axially inside, and a liquid inlet hole 72 that communicates with the fluid path 71 is provided on the side wall of the lower end of the piston rod 7, and the liquid inlet hole 72 is located inside the piston member 6. A piston seat 3 is provided on the outer side of the upper end of the piston rod 7, and the piston seat 3 is detachably connected to the pressing head 2. The pressing head 2 is provided with a fluid path 71 extending axially. The liquid outlet channel 23 connected to the fluid path 71 and the nozzle 21 connected to the liquid outlet channel 23, the piston seat 3 is provided with a first spring 8 on the outside, and the lower end of the piston rod 7 is provided with a second spring 9 on the outside, and the second spring 9 is located above the piston member 6, the upper end of the second spring 9 is against the lower end surface of the piston seat 3, and the lower end of the second spring 9 is against the upper end surface of the piston member 6, and the second spring 9 is used to provide an elastic force that causes the piston member 6 to move downward. When the first spring 8 is pressed and compressed to the air pressure in the pump body 4 is greater than the elastic force, the piston member 6 moves upward to form a fluid gap between the inner wall of the lower end of the piston member 6 and the outer wall of the lower end of the piston rod 7, so that the lower chamber 41 is connected to the liquid inlet hole 72.

[0029] In this embodiment, a liquid inlet 42 is provided at the lower end of the lower chamber 41, and a valve 43 is provided at the liquid inlet 42; the outer wall of the piston member 6 and the inner wall of the pump body 4 are dynamically sealed, and when the piston member 6 moves axially with the piston rod 7, the liquid will not flow out along the gap between the outer wall of the piston member 6 and the inner wall of the pump body 4, and the liquid inlet hole 72 at the lower end of the piston rod 7 is located inside the piston member 6, and the outer wall of the piston rod 7 and the inner wall of the piston are sealed and cooperated, that is, when the first spring 8 is initially pressed, the piston member 6 and the piston rod 7 move downward synchronously, and the liquid cannot pass through the gap between the outer wall of the piston rod 7 and the inner wall of the piston member 6. Its working principle is as follows: an axial force is applied to the pressing head 2, and the piston seat 3 in the pressing head 2 compresses the first spring 8, driving the piston member 6 and the piston rod 7 to move downward synchronously. The inner wall of the lower end of the piston member 6 and the outer wall of the lower end of the piston rod 7 are still sealed and matched, and the liquid cannot pass between the outer wall of the piston member 6 and the inner wall of the piston rod 7. The gas in the lower chamber 41 cannot be discharged outward and is thus compressed; continue to apply pressure. When the air pressure in the lower chamber 41 is greater than the downward elastic force applied by the second spring 9 to the piston member 6, the piston member 6 overcomes the elastic force and moves upward along the piston rod 7, thereby forming a fluid gap between the inner wall of the lower end of the piston member 6 and the outer wall of the lower end of the piston rod 7, and connecting the lower chamber 41 with the liquid inlet hole 72. The liquid flows into the fluid path 71 from the liquid inlet hole 72 at a high speed and is sprayed out by the nozzle 21 through the liquid outlet channel 23. Due to the large pressure, the liquid in the lower chamber 41 is sprayed out in the form of a spray, achieving a better spray effect. Since the second spring 9 is located in the upper chamber, it does not come into contact with the liquid, thereby achieving continuous spraying while preventing corrosion of the second spring 9 and improving its service life. By detachably connecting the pressing head 2 and the piston seat 3, it is easy to replace the pressing head 2 of different specifications, which is more flexible.

[0030] As a preferred embodiment, the inner wall of the piston 6 is recessed with an annular groove 61, and the liquid inlet hole 72 is connected to the annular groove 61. By providing the annular groove 61, the area of the piston 6 communicating with the lower chamber 41 is increased.

[0031] As a preferred embodiment, the outer wall of the lower end of the piston rod 7 is formed as an outer conical table 73 whose outer diameter gradually increases from top to bottom, and the inner wall of the lower end of the piston member 6 is formed as an inner conical table 62 that matches the outer conical table 73, and the cone angle of the inner peripheral wall of the lower end of the piston member 6 is greater than the cone angle of the lower end of the piston rod 7.

[0032] In this embodiment, sealing is achieved between the piston member 6 and the piston rod 7 through the inner conical table 62 and the outer conical table 73. The structure is simple and a better sealing effect is achieved through its own structure.

[0033] As a preferred embodiment, the inner top surface of the push head 2 has a downwardly extending first connecting portion 22, the liquid outlet channel 23 being formed within the first connecting portion 22. The piston seat 3 is provided with a connecting inner hole 31 that is threadedly connected to the first connecting portion 22. In this embodiment, the first connecting portion 22 enables a detachable connection between the piston seat 3 and the push head 2, facilitating quick assembly and disassembly of the push head 2 and the piston seat 3.

[0034] As a preferred embodiment, a mounting hole 24 is provided on one side of the press head 2 for mounting the nozzle 21, and the nozzle 21 is threadedly connected to the mounting hole 24. The nozzle 21 is mounted on the press head 2 in a threaded manner, and nozzles 21 of different specifications can be replaced, which is highly practical.

[0035] As a preferred embodiment, it also includes a cover body 1 and a connector 5. The cover body 1 partially accommodates the pump body 4 inside, and the pressing head 2 is arranged on the cover body 1 for moving up and down. The cover body 1 is provided with an opening, and the connector 5 is installed at the opening. The connector 5 has a second connecting portion 51 extending downward to the upper chamber, and the inner wall of the pump body 4 is sealed with the outer wall of the second connecting portion 51. In this embodiment, the cover body 1 is a screw thread cover with a thread formed on the inner surface, but its form is not limited to this, as long as it can be detachably connected to the bottle body; the connector 5 facilitates the detachable connection of the pump body 4 and the cover body 1, which is convenient for assembly. In addition, the upper end opening of the piston seat 3 extends outward to form an annular flange 33, the upper end of the first spring 8 abuts against the bottom surface of the annular flange 33, and the lower end of the first spring 8 abuts against the upper end surface of the connector 5, so as to better press down the first spring 8.

[0036] As a preferred embodiment, the inner wall of the pump body 4 is provided with an annular groove 45, and the outer wall of the second connecting portion 51 is provided with an annular rib that matches the annular groove 45. The concave-convex combination of the annular rib and the annular groove 45 further improves the sealing effect between the connecting member 5 and the pump body 4.

[0037] As a preferred embodiment, the second connecting portion 51 has a through hole 52 therein, the piston seat 3 has a third connecting portion 32 extending downward, the diameter of the through hole 52 is larger than the outer diameter of the third connecting portion 32, the second spring 9 is accommodated in the through hole 52, and the upper end of the second spring 9 is against the lower end surface of the third connecting portion 32, and the lower end of the second spring 9 is against the upper end surface of the piston member 6.

[0038] In this embodiment, the third connecting part 32 is provided with a plug-in hole 34 for the piston rod 7 to be plugged in. The outer wall of the upper end of the piston rod 7 is snap-connected with the inner wall of the plug-in hole 34, so that the piston rod 7 and the piston seat 3 can be quickly assembled; in addition, the third connecting part 32 can also press down the second spring 9 along the direction of the through hole 52, so that the third connecting part 32 has the functions of connecting and pressing down.

[0039] As a preferred embodiment, the upper end surface of the cover body 1 has a downwardly concave guide groove 11, and the push head 2 can move axially along the guide groove 11. By providing the guide groove 11, the first spring 8 can be wrapped to avoid being exposed and affecting the aesthetics.

[0040] As a preferred embodiment, a gasket 44 is sleeved on the outer periphery of the upper end of the pump body 4. By providing the gasket 44, the reliability of the connection between the pump body 4 and the cover body 1 is improved.

[0041] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limiting the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the utility model without departing from the principles and purpose of the utility model. All of these changes should fall within the scope of protection of the claims of the present invention.

Claims

1. A spray pump, characterized in that: The invention comprises a pump body (4), a piston member (6) arranged in the pump body (4), a piston rod (7) matched with the inner wall of the piston member (6), and a pressing head (2) for applying force to the piston rod (7) in the axial direction, wherein the piston member (6) divides the interior of the pump body (4) into an upper chamber and a lower chamber (41), the outer wall of the piston member (6) forms a dynamic seal with the inner wall of the pump body (4) and can move axially relative to the pump body (4), the piston rod (7) has a fluid path (71) extending in the axial direction inside, a liquid inlet hole (72) communicating with the fluid path (71) is provided on the side wall of the lower end of the piston rod (7), and the liquid inlet hole (72) is located in the piston member (6), the upper end of the piston rod (7) is provided with a piston seat (3), the piston seat (3) is detachably connected to the pressing head (2), and the pressing head (2) is provided with a fluid path (71) communicating with the fluid path (71). 1) a liquid outlet channel (23) and a nozzle (21) connected to the liquid outlet channel (23); the piston seat (3) is provided with a first spring (8) on the outside; the piston rod (7) is provided with a second spring (9) on the outside of the second spring (9), and the second spring (9) is located above the piston member (6); the upper end of the second spring (9) is against the lower end surface of the piston seat (3); the lower end of the second spring (9) is against the upper end surface of the piston member (6); the second spring (9) is used to provide an elastic force to cause the piston member (6) to move downward; when the first spring (8) is pressed and compressed to the point that the air pressure in the pump body (4) is greater than the elastic force, the piston member (6) moves upward, so that a fluid gap is formed between the inner wall of the lower end of the piston member (6) and the outer wall of the lower end of the piston rod (7), so that the lower chamber (41) is connected to the liquid inlet hole (72).

2. The spray pump according to claim 1, characterized in that An annular groove (61) is recessed inwardly on the inner wall of the piston member (6), and the liquid inlet hole (72) is communicated with the annular groove (61).

3. The spray pump according to claim 1, wherein The outer wall of the lower end of the piston rod (7) is formed into an outer conical table (73) whose outer diameter gradually increases from top to bottom, and the inner wall of the lower end of the piston member (6) is formed into an inner conical table (62) that matches the outer conical table (73), and the cone angle of the inner peripheral wall of the lower end of the piston member (6) is greater than the cone angle of the lower end of the piston rod (7).

4. The spray pump according to claim 1, wherein The inner top surface of the push head (2) has a first connecting portion (22) extending downward, the liquid outlet channel (23) is formed inside the first connecting portion (22), and the piston seat (3) is provided with a connecting inner hole (31) threadedly connected to the first connecting portion (22).

5. The spray pump according to claim 1, characterized in that A mounting hole (24) for mounting the nozzle (21) is provided on one side of the pressing head (2), and the nozzle (21) is connected to the mounting hole (24) in a threaded manner.

6. The spray pump according to any one of claims 1 to 5, characterized in that: The invention also includes a cover body (1) and a connecting piece (5), wherein the cover body (1) partially accommodates the pump body (4) inside, and the pressing head (2) is arranged on the cover body (1) to move up and down, and the cover body (1) is provided with an opening, and the connecting piece (5) is installed at the opening, and the connecting piece (5) has a second connecting portion (51) extending downward to the upper chamber, and the inner wall of the pump body (4) is sealed with the outer wall of the second connecting portion (51).

7. The spray pump according to claim 6, characterized in that The inner wall of the pump body (4) is provided with an annular groove (45), and the outer wall of the second connecting portion (51) is provided with an annular rib that matches the annular groove (45).

8. The spray pump according to claim 6, characterized in that The second connecting portion (51) has a through hole (52) therein, the piston seat (3) has a third connecting portion (32) extending downward, the diameter of the through hole (52) is larger than the outer diameter of the third connecting portion (32), the second spring (9) is accommodated in the through hole (52), and the upper end of the second spring (9) is against the lower end surface of the third connecting portion (32), and the lower end of the second spring (9) is against the upper end surface of the piston member (6).

9. The spray pump according to claim 6, characterized in that The upper end surface of the cover body (1) is provided with a downwardly recessed guide groove (11), and the pressing head (2) can move axially along the guide groove (11).

10. The spray pump according to claim 6, characterized in that A gasket (44) is sleeved on the outer periphery of the upper end of the pump body (4).

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