Dispenser having spiral lock

Abstract

A dispenser having a spiral lock, the dispenser comprising a pump body (2), a valve rod (6), a spiral sleeve (7) and a spring (8). The spiral sleeve (7) is sleeved over the lower portion of the valve rod (6), and the spiral sleeve (7) and the valve rod (6) remain fixed in the circumferential direction. The spring (8) is sleeved outside the valve rod (6), an upper end surface of the spring (8) abuts against a duckbill nozzle (12), and a lower end surface of the spring (8) abuts against the spiral sleeve (7). A spiral groove (22) is provided in the pump body (2), and a transverse groove is provided adjacent to the top of the spiral groove (22); and a spiral protrusion (73) is provided on a side wall of the spiral sleeve (7). In the dispenser having a spiral lock, the product height is reduced, the production cost is decreased, and the outer diameter of the pump body is reduced, such that the dispenser having a spiral lock has wider adaptability and applicability.

Description

A dispenser with a screw lock Technical Field

[0001] This application belongs to the field of packaging container technology, specifically a dispenser with a screw lock. Background Technology

[0002] A dispenser is a device that utilizes the principle of atmospheric balance. By pressing, it pumps the liquid out of the bottle and replenishes the liquid with outside air. Dispensers are widely used in industries such as daily chemicals and pharmaceuticals.

[0003] Springs are essential components of dispensers. Traditionally, springs in dispensers are typically made of metal. However, due to environmental considerations such as reducing pollution, facilitating recycling, and conserving resources, more and more manufacturers are using polymer materials (plastics) to make springs. For example, Chinese invention patent application CN117884277A uses a plastic spring. This patent application discloses a spiral-locking emulsion pump (emulsion pumps are a common dispenser in the daily chemical industry). During the opening and closing of the emulsion pump, the spring is subjected to strong pressure. Because plastic springs have weaker restoring ability than metal springs, repeated strong pressure may cause the plastic spring to fail to return to its original shape even in a free state. Combined with other factors, this causes the spring in this spiral-locking emulsion pump to exhibit play-up and down movement when initially opened and not fully closed, resulting in the spout failing to pump liquid within a certain downward stroke. The spout must be manually rotated to move downwards and seal the valve needle and pump body before it can be used, affecting the user experience and reducing the product's lifespan. Summary of the Invention

[0004] This application provides a dispenser with a spiral lock, which prevents the spring from shifting up and down, improves the user experience, and extends the product's lifespan.

[0005] To achieve the above-mentioned objectives, this application adopts the following technical solution:

[0006] A distributor with a helical lock includes a pump body, a valve stem, a helical sleeve, and a spring. The helical sleeve is fitted onto the lower part of the valve stem and is circumferentially fixed to the valve stem. The spring is fitted onto the valve stem, with its two ends abutting against a duckbill and a helical groove, respectively. The pump body has a helical groove, with a transverse groove adjacent to the top of the helical groove. The sidewall of the helical sleeve has a helical protrusion. When the helical protrusion is located in the transverse groove, the distributor with the helical lock is in the open state; when the helical protrusion is located at the bottom of the helical groove, the distributor with the helical lock is in the closed state.

[0007] Furthermore, to ensure stable use of the dispenser when it is in the open state, a groove is provided in the aforementioned transverse groove to prevent the spiral protrusion from moving within the groove.

[0008] Furthermore, in order to make the relative sliding between the spiral sleeve and the pump body more stable, there are two spiral protrusions, and there are also two corresponding spiral grooves; even further, the two spiral protrusions are arranged symmetrically.

[0009] Furthermore, the valve stem sidewall is provided with a first limiting rib, and the spiral sleeve is provided with a limiting notch. The first limiting rib of the valve stem cooperates with the limiting notch to prevent the spiral sleeve and the valve stem from rotating relative to each other.

[0010] Furthermore, the aforementioned distributor with a spiral lock also includes a connector, which is installed at the opening of the pump body, and the lower part of the duckbill is inserted into the connector.

[0011] Furthermore, the aforementioned distributor with a helical lock also includes a piston and a valve needle, with the piston mounted at the bottom of the valve stem and the valve needle passing through the piston and inserted into the valve stem.

[0012] Furthermore, the aforementioned distributor with a spiral lock also includes a check valve located at the liquid inlet at the bottom of the pump body; even further, the check valve can be a spring sleeve or a ball valve.

[0013] Furthermore, the aforementioned distributor with a screw lock also includes a large ring, which is installed at the opening of the pump body and is used to install the aforementioned distributor with a screw lock onto the bottle body.

[0014] The distributor with a screw lock disclosed in this application allows the spring, duckbill, and valve stem to move up and down together during opening and closing. The spring remains consistently under stable force, preventing it from shifting during closing and immediately after opening. The distributor is ready to use from the open position, improving the user experience and extending product lifespan. Furthermore, this screw lock distributor reduces product height and production costs; it also reduces the pump body diameter, allowing it to fit bottles with smaller inner diameters, thus broadening its adaptability and applicability. Attached Figure Description

[0015] Figure 1 is a cross-sectional view of the dispenser with a screw lock in an embodiment;

[0016] Figure 2 is a schematic diagram of the pump body structure of the embodiment;

[0017] Figure 3 is a perspective view of the pump body structure in the embodiment;

[0018] Figure 4 is a perspective view of the spiral sleeve at the first angle of the embodiment;

[0019] Figure 5 is a perspective view of the spiral sleeve at the second angle of the embodiment;

[0020] Figure 6 is a perspective view of the valve stem in the embodiment;

[0021] Figure 7 is a cross-sectional view of the valve stem in the embodiment;

[0022] Figure 8 is a perspective view of the spring in the embodiment;

[0023] Figure 9 is a cross-sectional view of the piston in the embodiment;

[0024] Figure 10 is a front view of the valve needle in the embodiment;

[0025] Figure 11 is a cross-sectional view of the duckbill in the embodiment;

[0026] Figure 12 is a cross-sectional view of the connector in the embodiment;

[0027] Figure 13 is a perspective view of the spring sleeve in the embodiment;

[0028] Figure 14 is a schematic diagram of the dispenser with screw lock in the open state according to the embodiment;

[0029] Figure 15 is a schematic diagram of the distributor with screw lock in the closed state according to the embodiment.

[0030] In the diagram, the component numbers are as follows: 1. Straw, 2. Cap, 3. Spring sleeve, 4. Valve needle, 5. Piston, 6. Valve stem, 7. Spiral sleeve, 8. Spring, 9. Large ring, 10. Connecting seat, 11. Gasket, 12. Duckbill. Detailed Implementation

[0031] The following detailed description, in conjunction with the accompanying drawings, describes a distributor with a spiral lock according to this application. In the description of this application, it should be understood that the terms "left side," "right side," "upper part," "lower part," "bottom," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing the technical solution of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. "First," "second," etc., do not indicate the importance of components and therefore should not be construed as limiting the invention. The specific dimensions and values ​​used in this embodiment are only for illustrating the technical solution and do not limit the scope of protection of this invention. Example 1

[0032] As shown in Figure 1, this embodiment discloses a distributor with a spiral lock, including a pump body 2, a valve stem 6, a spiral sleeve 7, and a spring 8. As shown in Figure 4, the spiral sleeve 7 includes a spiral sleeve through hole 71, and the spiral sleeve 7 is fitted onto the lower part of the valve stem 6 through the spiral sleeve through hole 71. The spiral sleeve 7 and the valve stem 6 are fixed in the circumferential direction, that is, the spiral sleeve 7 and the valve stem 6 cannot rotate relative to each other around the longitudinal central axis of the valve stem 6. The spring 8 is fitted onto the outside of the valve stem 6, and the two ends of the spring 8 abut against the duckbill and the spiral sleeve, respectively. As shown in Figures 2 and 3, the inner wall of the pump body 2 is provided with a spiral groove 22, and the top of the spiral groove 22 is adjacent to a transverse groove; as shown in Figure 4, the side wall of the spiral sleeve 7 is provided with a spiral protrusion 73. When the spiral protrusion 73 is located in the transverse groove, the distributor with a spiral lock in this embodiment is in the open state, that is, the duckbill can be pressed down to pump out the stored liquid; when the spiral protrusion 73 is located at the bottom of the spiral groove 22, the distributor with a spiral lock in this embodiment is in the closed state, that is, the duckbill cannot be pressed down. When the duckbill is screwed all the way down, the 122 of the duckbill and the 102 of the connecting seat are in an interference seal (friction fit). It requires a certain amount of force to open, and there is a certain feel when it opens (there is a certain amount of friction).

[0033] As shown in Figures 2 and 3, to ensure stable operation of the distributor when it is in the open state, a groove 24 is provided in the transverse slot, and the spiral protrusion 73 is located in the groove 24 to prevent the spiral protrusion from moving. To make the relative sliding between the spiral sleeve 7 and the pump body 2 more stable, there are two spiral protrusions 73, which are symmetrically arranged, and there are also two spiral grooves 22.

[0034] As shown in Figure 6, a first limiting rib 64 is provided on the side wall of the valve stem 6; as shown in Figure 4, a limiting notch 72 is provided inside the spiral sleeve 7, and the first limiting rib 64 of the valve stem cooperates with the limiting notch 72 to prevent the spiral sleeve 7 and the valve stem 6 from rotating relative to each other.

[0035] As shown in Figure 1, the dispenser with a screw lock in this embodiment also includes a gasket 11, a connecting seat 10, a large ring 9, a piston 5, a valve needle 4, a one-way valve, and a suction tube 1. The large ring 9 is installed at the opening of the pump body 2 and is used to install the dispenser with a screw lock onto the bottle body; the gasket 11 is installed inside the large ring 9. The connecting seat 10 is installed inside the opening of the pump body 2, and the lower part of the duckbill 12 is inserted into the connecting seat 10. The piston 5 is installed at the bottom of the valve stem 6, and the valve needle 4 passes through the piston 5 and is inserted into the valve stem 6. The one-way valve is located at the liquid inlet at the bottom of the pump body 2, and the suction tube 1 is inserted into the liquid inlet at the bottom of the pump body 2. The one-way valve can be a spring sleeve or a ball valve; in this embodiment, a spring sleeve 3 is used.

[0036] To further improve the distributor technology solution with screw lock in this embodiment, the following technical details are provided:

[0037] As shown in Figure 8, the spring 8 includes a spring through hole 81, a spring upper bottom surface 82, and a spring lower bottom surface 83. The valve stem 6 is inserted through the spring through hole 81, and the spring upper bottom surface 82 abuts against the lower part of the duckbill 12. As shown in Figure 4, the spiral sleeve 7 includes a spiral sleeve plane 75, and the spring lower bottom surface 83 abuts against the spiral sleeve plane 75. In specific implementations, the spring 8 can be made of metal, polymer materials, etc.

[0038] As shown in Figure 9, the piston 5 includes an inner piston ring 51, a bottom surface 52 of the inner piston ring, and a top surface 53 of the outer piston ring. As shown in Figure 7, the valve stem 6 includes a bottom valve stem sidewall 61, a first valve stem locking rib 62, and a second valve stem limiting rib 63. The inner piston ring 51 and the valve stem sidewall 61 are fitted together for sealing. As shown in Figure 10, the valve needle 4 includes a valve needle locking rib 41, a valve needle top 42, and a valve needle inclined surface 43 at the bottom of the valve needle. The valve needle locking rib 41 and the first valve stem locking rib 62 are tightly engaged, the valve needle top 42 is limited by the second valve stem limiting rib 63, and the bottom surface 52 of the inner piston ring and the valve needle inclined surface 43 are in contact and sealed. As shown in Figure 5, the screw sleeve includes a screw sleeve bottom 74. When the distributor is in a stationary state, the bottom 74 of the screw sleeve abuts against the top surface 53 of the outer piston ring.

[0039] As shown in Figure 11, the duckbill 12 includes a duckbill rib 121 and a duckbill protrusion 122. As shown in Figure 12, the connecting seat includes a connecting seat rib 101 and a connecting seat sealing surface 102. As shown in Figure 2, the pump body 2 includes a pump body snap-fit ​​rib 23. As shown in Figure 7, the valve stem 6 includes a valve stem second snap-fit ​​rib 65. The connecting seat rib 101 and the pump body snap-fit ​​rib 23 cooperate. The duckbill rib 121 and the valve stem second snap-fit ​​rib 65 engage. During the distributor closing process, the duckbill protrusion 122 and the connecting seat sealing surface 102 are sealed together.

[0040] As shown in Figure 13, the sleeve 3 includes a sleeve sidewall 31; as shown in Figure 2, a first limiting rib 21 for the sleeve is provided at the bottom of the pump body 2. The sleeve sidewall 31 is interlocked and sealed with the first limiting rib 21 of the pump body, and serves to fix the sleeve 3.

[0041] The closing and opening process of a distributor with a screw lock provided in this embodiment is as follows:

[0042] 1. Closing Process: As shown in Figure 14, the distributor is in the open state, and the spiral protrusion 73 of the spiral sleeve 7 is located in the groove 24. Rotating the duckbill 12 to the right causes the valve stem 6 to rotate, which in turn rotates the spiral sleeve 7. The spiral protrusion 73 disengages from the groove 24 and enters the spiral groove 22. During this process, the bottom of the valve needle 4 gradually seals with the inside of the pump body 2, and the duckbill protrusion 122 and the connecting seat sealing surface 102 gradually seal and engage. When the spiral protrusion 73 reaches the bottom of the spiral groove 22, as shown in Figure 15, the entire liquid chamber at the bottom of the pump body 2 is closed, the duckbill 12 cannot be pressed, and the liquid inside the pump body 2 cannot be pumped out. At this time, the distributor is in the closed state. Throughout the closing process, the force and shape of the spring 8 remain essentially unchanged.

[0043] This embodiment takes rotating the duckbill 12 to the right as an example. It can also be set to rotate the duckbill 12 to the left, that is, the direction of the spiral groove is opposite to the direction of the spiral groove 22 in Figure 2 of the specification.

[0044] 2. Opening Process: As shown in Figure 15, the dispenser is in the closed state, with the spiral protrusion 73 located at the bottom of the spiral groove 22. Rotate the duckbill 12 to the left (opposite to the closing process), and the spiral protrusion 73 slides upwards along the spiral groove 22. When the spiral protrusion 73 reaches the outlet of the spiral groove 22, continue rotating the duckbill 12, and the spiral protrusion 73 engages with the groove 24. At this point, the dispenser is in the open state, and liquid can be pumped out by pressing the duckbill 12.

[0045] The above description is based on the preferred embodiments of this application. It should be clear that the present invention as defined by the appended claims is not limited to the specific details set forth in the above description, and many obvious modifications to the present invention without departing from the spirit or scope of the present invention may also achieve the purpose of the present invention.

Claims

1. A distributor with a helical lock, comprising a pump body, a valve stem, and a spring; characterized in that, It also includes a spiral sleeve; the spiral sleeve is fitted onto the lower part of the valve stem, and the spiral sleeve and the valve stem are fixed circumferentially; the spring is fitted onto the outside of the valve stem, and the two ends of the spring abut against the duckbill and the spiral sleeve respectively; a spiral groove is provided in the pump body, and a transverse groove is adjacent to the top of the spiral groove; a spiral protrusion is provided on the side wall of the spiral sleeve; when the spiral protrusion is located in the transverse groove, the distributor with a spiral lock is in the open state; when the spiral protrusion is located at the bottom of the spiral groove, the distributor with a spiral lock is in the closed state.

2. The dispenser with a spiral lock according to claim 1, characterized in that, The transverse groove is provided with a recess.

3. The dispenser with a spiral lock according to claim 1, characterized in that, There are two spiral protrusions and two spiral grooves.

4. The dispenser with a spiral lock according to claim 3, characterized in that, The two spiral protrusions are arranged symmetrically.

5. The dispenser with a spiral lock according to claim 1, characterized in that, The valve stem sidewall is provided with a first limiting rib, and the spiral sleeve is provided with a limiting notch, the first limiting rib of the valve stem cooperating with the limiting notch.

6. The dispenser with a spiral lock according to claim 1, characterized in that, The distributor with a spiral lock also includes a connector, which is installed at the opening of the pump body, and the lower part of the duckbill is inserted into the connector.

7. The dispenser with a spiral lock according to claim 1, characterized in that, The dispenser with a helical lock also includes a piston and a valve needle, the piston being mounted at the bottom of the valve stem and the valve needle passing through the piston and inserted into the valve stem.

8. The dispenser with a spiral lock according to claim 1, characterized in that, The distributor with a helical lock also includes a one-way valve located at the inlet at the bottom of the pump body.

9. The dispenser with a spiral lock according to claim 8, characterized in that, The one-way valve can be either a spring-loaded valve or a ball valve.

10. The dispenser with a spiral lock according to claim 1, characterized in that, The distributor with a helical lock also includes a large ring, which is installed at the opening of the pump body.

Images