All-plastic emulsion pump

Abstract

The utility model discloses an all-plastic emulsion pump which comprises a pump core structure, the pump core structure is installed on a pump body, the pump core structure comprises a valve needle, a piston, a connecting cover, a plastic spring and a valve rod, the lower portion of the valve rod is connected with the valve needle, the valve needle penetrates through the piston to be inserted into the lower end of the valve rod, the plastic spring is arranged in the connecting cover, and the plastic spring is arranged on the outer side of the valve rod in a sleeved mode. Due to the fact that the valve rod and the connecting cover are matched to extrude the plastic spring, the design that the plastic spring is opposite to the metal spring is adopted, the metal spring and the pump body do not need to be separated when the emulsion pump is recycled, and therefore the emulsion pump can be recycled and reused as a whole, and the bottom ring arranged in the middle of the plastic spring and the middle of a rib play a supporting role. And large deformation of the middle parts of the ribs is avoided, so that the elasticity and the supporting force of the plastic spring are increased, and actual requirements are met.

Description

Technical Field

[0001] The utility model relates to the technical field of lotion pumps, in particular to a full-plastic lotion pump. Background Art

[0002] The lotion pump is a common cosmetic packaging tool and an indispensable device in modern homes and beauty salons. It is mainly used to squeeze and spray lotions, liquid cosmetics, shampoo, shower gel and other liquid cosmetics.

[0003] Currently, lotion pumps generally use metal springs as supports, but metal materials are not conducive to the overall recycling of the lotion pump. In order to solve this problem, some lotion pumps use spiral plastic springs as supports, but the supporting force of plastic springs is insufficient. Although they are easily compressed, they are not easy to reset. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides an all-plastic lotion pump, including a pump core structure, which is installed on a pump body. The pump core structure includes a valve needle, a piston, a connecting cover, a plastic spring and a valve stem. The lower part of the valve stem is connected to the valve needle, and the valve needle passes through the piston and is inserted into the lower end of the valve stem. The plastic spring is arranged in the connecting cover, and the plastic spring is sleeved on the outside of the valve stem. The plastic spring is extruded by the cooperation of the valve stem and the connecting cover.

[0005] Preferably, the plastic spring comprises a top ring and a bottom ring, and the top ring and the bottom ring are connected by ribs.

[0006] Preferably, two ribs are provided, and the two ribs are symmetrically spiral.

[0007] Preferably, at least one bottom ring is arranged in the middle of the rib.

[0008] Preferably, a rounded corner is provided at the intersection surface between each rib and the top ring and the bottom ring.

[0009] Preferably: a support ring is provided in the middle of the connection cover, and the outer diameter of the support ring is larger than the outer diameter of the connection cover.

[0010] Preferably: the inner wall of the upper opening of the connecting cover is symmetrically provided with limiting grooves, the limiting grooves are connected to the arc groove, and a sliding groove is provided at one end of the arc groove away from the limiting groove.

[0011] Preferably: a support ring is provided at the bottom of the connection cover, and the support ring is used to support the plastic spring.

[0012] Preferably, a plurality of convex ribs are radially arranged at the connection between the support ring and the connection cover.

[0013] Preferably: a valve stem ring is arranged on the upper part of the valve stem, the diameter of the valve stem ring is larger than the outer diameter of the valve stem, and sliders are symmetrically arranged on the valve stem ring along the axis of the valve stem.

[0014] Technical effects and advantages of the utility model:

[0015] 1. In the present invention, a plastic spring is used in comparison with a metal spring. When recycling, there is no need to separate the metal spring from the pump body, thereby facilitating the recycling and reuse of the entire lotion pump.

[0016] 2. In the present invention, the bottom ring disposed in the middle of the plastic spring plays a supporting role in the middle of the ribs, thereby avoiding large deformation in the middle of the ribs, thereby increasing the elasticity and supporting force of the plastic spring and meeting actual needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the all-plastic lotion pump provided in the embodiment of the present application;

[0018] Figure 2 is an exploded view of the all-plastic lotion pump provided in an embodiment of the present application;

[0019] Figure 3 is a cross-sectional view of an all-plastic lotion pump provided in an embodiment of the present application;

[0020] Figure 4 It is a schematic diagram of the structure of the connection cover in the all-plastic lotion pump provided in the embodiment of the present application;

[0021] Figure 5 is a top view of a connection cover in an all-plastic lotion pump provided in an embodiment of the present application;

[0022] Figure 6 It is a schematic diagram of the structure of a plastic spring in an all-plastic lotion pump provided in an embodiment of the present application;

[0023] Figure 7 It is a schematic diagram of the structure of the valve stem in the all-plastic lotion pump provided in the embodiment of the present application.

[0024] In the figure: 1. Straw; 2. Valve plate; 3. Pump body; 4. Valve needle; 5. Piston; 6. Large circle; 7. Gasket; 8. Connecting cover; 81. Support ring; 82. Limit groove; 83. Arc groove; 84. Slide groove; 85. Support ring; 86. Raised rib; 9. Plastic spring; 91. Top ring; 92. Bottom ring; 93. Rib; 94. Fillet; 10. Valve stem; 101. Valve stem ring; 102. Slider; 11. Head cap; 12. Buckle. DETAILED DESCRIPTION

[0025] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific purposes.

[0026] See also Figures 1 to 3 As shown, in this embodiment, a full-plastic lotion pump is provided, including a pump core structure, which is installed on a pump body 3. The pump core structure includes a valve needle 4, a piston 5, a connecting cover 8, a plastic spring 9 and a valve stem 10. The upper part of the valve stem 10 is connected to a head cap 11, and the lower part of the valve stem 10 is connected to the valve needle 4. The valve needle 4 passes through the piston 5 and is inserted into the lower end of the valve stem 10, and the lower end of the valve stem 10 is inserted into the piston 5. The piston 5 is arranged in the pump body 3, and the piston 5 can slide along the pump body 3. The pump body 3 is equipped with a gasket 7. The pump body 3 is connected to Connect the large circle 6, a valve plate 2 is arranged at the bottom of the pump body 3, the bottom of the pump body 3 is connected to the suction pipe 1, a connecting cover 8 is inserted on the upper part of the pump body 3, the bottom end of the connecting cover 8 is inserted into the annular groove on the upper end face of the piston 5, a plastic spring 9 is arranged inside the connecting cover 8, the plastic spring 9 is sleeved on the outside of the valve stem 10, the valve stem 10 is provided with a head cap 11 for use with the plastic spring 9, the outer side of the valve stem 10 is sleeved with a buckle 12, and the buckle 12 is sleeved on the cylinder on the upper part of the valve stem 10.

[0027] Specifically, after the plastic spring 9 is placed in the connecting cover 8, the valve stem 10 passes through the plastic spring 9 and the bottom of the connecting cover 8, and after the piston 5 is placed on the bottom inner circle of the valve stem 10, the valve stem 10 is clamped with the valve needle 4 to form a pump core structure, and the gasket 7 is inserted into the pump body 3 from the lower edge of the pump body 3, and the valve sheet 2 is placed in the small circle at the center bottom of the pump body 3. After the large circle 6 is placed on the upper edge of the pump body 3, the pump core is placed in the pump body 3 and pressed down to clamp the pump core and the pump body 3. After the head cap 11 is installed on the upper edge of the valve stem 10, the buckle 12 is clamped on the cylinder on the upper part of the connecting cover 8 to support the head cap 11 so that the head cap 11 will not go down, and then the straw 1 is inserted into the pump body 3 to complete the installation of the lotion pump.

[0028] See also Figure 4 and Figure 5As shown, a support ring 81 is provided in the middle of the connection cover 8, and the outer diameter of the support ring 81 is larger than the outer diameter of the connection cover 8. When the connection cover 8 is placed in the pump body 3, the lower edge of the support ring 81 fits on the upper edge of the pump body 3, and the upper edge of the support ring 81 supports the buckle 12. When the head cap 11 is pressed down, the buckle 12 is supported by the support ring 81 to prevent the buckle 12 from moving down. The inner wall of the upper opening of the connection cover 8 is symmetrically provided with a limiting groove 82, and the limiting groove 82 is connected to the arc groove 83, and the width of the limiting groove 82 along the radial direction of the connection cover 8 is greater than the width of the arc groove 83 along the radial direction. The radial width of the connecting cover 8, a slide groove 84 is arranged at one end of the arc groove 83 away from the limiting groove 82, and the slide groove 84 is arranged axially along the connecting cover 8. The radial width of the slide groove 84 along the connecting cover 8 is consistent with the radial width of the limiting groove 82 along the connecting cover 8. A support ring 85 is arranged at the bottom of the connecting cover 8. The support ring 85 is used to support the plastic spring 9, and a plurality of convex ribs 86 are radially arranged at the connection between the support ring 85 and the connecting cover 8. The convex ribs 86 can increase the strength of the support ring 85, and the bottom of the plastic spring 9 is limited by the convex ribs 86.

[0029] See also Figure 6 As shown, the plastic spring 9 includes a top ring 91 and a bottom ring 92, and the top ring 91 and the bottom ring 92 are connected by a rib 93. Two ribs 93 are provided, and the two ribs 93 are symmetrical spirals. At least one bottom ring 92 is provided in the middle of the rib 93. The rib 93 rotates 1.5 circles, and a bottom ring 92 is provided at each half circle of the rib 93. A fillet 94 is provided at the intersection of each rib 93 with the top ring 91 and the bottom ring 92.

[0030] See also Figure 7 As shown, a stem ring 101 is disposed on the upper portion of the valve stem 10 , the diameter of the stem ring 101 is larger than the outer diameter of the valve stem 10 , and sliders 102 are symmetrically disposed on the stem ring 101 along the axis of the valve stem 10 .

[0031] Specifically, before use, the slider 102 is located in the limiting groove 82, and the limiting groove 82 limits the movement of the slider 102 to prevent the valve stem 10 from rotating. Even if the head cap 11 is pressed downward, the valve stem 10 will not move downward. During use, the head cap 11 is rotated to drive the valve stem 10 to rotate, and the slider 102 moves along the arc groove 83 to the slide groove 84, so that when the head cap 11 is pressed downward, the slider 102 can move downward along the slide groove 84.

[0032] In this embodiment, the plastic spring 9 can be made of PE, PP or PVC. Compared with the design of the metal spring, there is no need to separate the metal spring and the pump body during recycling, thereby facilitating the recycling and reuse of the entire lotion pump.

[0033] The working principle of the utility model is:

[0034] When in use, remove the buckle 12, rotate the head cap 11 to drive the valve stem 10 to rotate, and the slider 102 moves from the limit groove 82 to the slide groove 84. Press the head cap 11 downward by hand to drive the valve stem 10 to move downward, and the valves of the piston 5 and the valve needle 4 are opened to discharge the air or contents inside the pump body 3, along the middle of the valve stem 10 to the mouth of the head cap 11, and send the air or contents out. After releasing the head cap 11, the plastic spring 9 returns to its original position, so that the valves of the piston 5 and the valve needle 4 are closed.

[0035] In the utility model, the valve stem ring 101 squeezes the top ring 91 downward, and the top ring 91 squeezes the spiral rib 94, so that the plastic spring 9 is compressed as a whole. The bottom ring 92 and the middle part of the rib 94 provided in the middle of the plastic spring 9 play a supporting role, avoiding large deformation in the middle part of the rib 94, thereby increasing the elasticity and supporting force of the plastic spring 9 and meeting actual needs.

[0036] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. Structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to conventional means in the field unless otherwise specified and limited.

Claims

1. A fully plastic lotion pump, including a pump core structure, characterized in that: The pump core structure is installed on the pump body (3), and comprises a valve needle (4), a piston (5), a connecting cover (8), a plastic spring (9) and a valve stem (10). The lower part of the valve stem (10) is connected to the valve needle (4), the valve needle (4) passes through the piston (5) and is inserted into the lower end of the valve stem (10), the plastic spring (9) is arranged in the connecting cover (8), and the plastic spring (9) is sleeved on the outer side of the valve stem (10), and the plastic spring (9) is extruded by the cooperation of the valve stem (10) and the connecting cover (8).

2. The all-plastic lotion pump according to claim 1, characterized in that: The plastic spring (9) comprises a top ring (91) and a bottom ring (92), and the top ring (91) and the bottom ring (92) are connected via ribs (93).

3. The all-plastic lotion pump according to claim 2, characterized in that: Two ribs (93) are provided, and the two ribs (93) are symmetrically spiral.

4. The all-plastic lotion pump according to claim 3, characterized in that: At least one bottom ring (92) is arranged in the middle of the rib (93).

5. The all-plastic lotion pump according to claim 4, characterized in that: A rounded corner (94) is provided at the intersection surface between each rib (93) and the top ring (91) and the bottom ring (92).

6. The all-plastic lotion pump according to claim 1, characterized in that: A support ring (81) is provided in the middle of the connection cover (8), and the outer diameter of the support ring (81) is greater than the outer diameter of the connection cover (8).

7. The all-plastic lotion pump according to claim 6, characterized in that: The inner wall of the upper opening of the connection cover (8) is symmetrically provided with a limiting groove (82), the limiting groove (82) is connected to the arc groove (83), and a sliding groove (84) is provided at one end of the arc groove (83) away from the limiting groove (82).

8. The all-plastic lotion pump according to claim 7, characterized in that: A support ring (85) is provided at the bottom of the connection cover (8), and the support ring (85) is used to support the plastic spring (9).

9. The all-plastic lotion pump according to claim 8, characterized in that: A plurality of convex ribs (86) are radially arranged at the connection point between the support ring (85) and the connection cover (8).

10. The all-plastic lotion pump according to claim 1, characterized in that: A valve stem ring (101) is arranged on the upper part of the valve stem (10); the diameter of the valve stem ring (101) is larger than the outer diameter of the valve stem (10); and sliders (102) are symmetrically arranged on the valve stem ring (101) along the axis of the valve stem (10).

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