A liquid leakage preventing emulsion pump

Abstract

The application provides a liquid leakage prevention emulsion pump, which comprises a shoulder sleeve and a pump body installed in an external bottle body through the shoulder sleeve, an end of the pump body is provided with a connecting piece, the connecting piece is a hollow piece and is provided with a gas permeation groove on one side, a gas permeation hole is provided through the pump body and communicates with the gas permeation groove, a piston rod is installed in the pump body, a protruding part is provided around the piston rod, the protruding part is in sealing contact with the inner wall of the connecting piece, the gas permeation groove is sealed, and the upper end of the piston rod penetrates through the connecting piece. The emulsion pump provided by the application can seal the gas permeation groove through the protruding part of the piston rod during transportation, so that the emulsion in the bottle body cannot enter the pump body through the gas permeation hole and the gas permeation groove, thereby preventing the piston rod and the head cap from carrying out part of the emulsion to cause pollution when being opened, and the gas permeation groove is automatically unlocked when the head cap and the piston rod are lifted and opened, so that the subsequent use is not affected.

Description

Technical Field

[0001] This application relates to the field of emulsion pump technology, and more specifically to an emulsion pump that prevents leakage. Background Technology

[0002] Lotion pumps are commonly used in daily cleaning and skincare products such as hand soap, shower gel, and facial cleanser to dispense lotion, and are widely used in daily life. Patent application number 201120465226.0 discloses a spring-loaded external lotion pump, including a pusher, a locking cap, a nut, a main column, a body, a piston, a sealing cap, a glass bead, a spherical seal, and an external spring. The sealing cap is sealed and fixed within the body; the main column passes through the sealing cap; the external spring is elastically tensioned between the upper ends of the main column and the sealing cap; the bottom of the main column has an annular groove, and the piston is fitted into the groove and can move up and down; the body has a vent hole, the sealing cap is connected to the vent hole, and the sealing cap has an air intake control chamber communicating with the vent hole. The spherical seal fits into the air intake control chamber and opens or closes the vent hole depending on its position. When the emulsion pump is unopened, the vent is directly connected to the external bottle, which causes some emulsion to leak into the pump body during transportation. When the pump is first opened, the emulsion is pulled out of the bottle along with the piston, resulting in contamination and inconvenience in use. Summary of the Invention

[0003] (a) Technical problems to be solved

[0004] The problem to be solved by this application is to provide an emulsion pump that prevents leakage, which can overcome the defects in the prior art.

[0005] (II) Technical Solution

[0006] The embodiments in this specification provide the following technical solutions:

[0007] This specification provides an embodiment of a leak-proof emulsion pump, including a shoulder sleeve and a pump body installed inside an external bottle via the shoulder sleeve. A connector is inserted into the end of the pump body. The connector is hollow and has a vent groove on one side. A vent hole is provided through the pump body and communicates with the vent groove. A piston rod is installed inside the pump body. A protrusion is provided around the piston rod and seals against the inner wall of the connector, sealing the vent groove. At this time, the emulsion in the external bottle cannot enter the pump body through the vent hole and the vent groove. The upper end of the piston rod passes through the connector. When the pump body is opened, the piston rod moves upward, causing the protrusion to disengage from the vent groove. At this time, the vent hole communicates with the interior of the pump body, allowing the emulsion pump to be used normally.

[0008] In some embodiments, the pump body is provided with a first mounting base, the vent is located on one side of the first mounting base, the bottom of the connector is provided with a connecting part, the connecting part is inserted into the first mounting base, the vent groove is provided through one side of the connecting part, the protrusion is sealed and fitted against the inner wall of the connecting part, and the surface of the connecting part is provided with stop ribs at equal intervals, the stop ribs abut against the inner wall of the first mounting base.

[0009] In some embodiments, the pump body has at least one snap-fit ​​rib at its end, the connector has a snap-fit ​​groove corresponding to the snap-fit ​​rib, the piston rod has a cap connected to its upper end, the cap has an external thread at its bottom, and the connector has an internal thread that mates with the external thread.

[0010] In some embodiments, a spring seat is inserted and connected to the bottom of the piston rod, a second mounting seat is provided in the pump body, the bottom of the spring seat is placed on the second mounting seat, a return spring is installed in the pump body, the bottom of the spring seat is hollow, and the return spring abuts against the bottom of the spring seat.

[0011] In some embodiments, a piston is fitted onto the spring seat, the piston abuts against the bottom of the piston rod, the pump body is provided with a flange, the flange fits against the bottom of the shoulder sleeve, a gasket is provided at the bottom of the flange, and a sealing ball valve is installed on both the piston rod and the pump body.

[0012] (III) Beneficial Effects

[0013] Compared with the prior art, the beneficial effects that can be achieved by the above-mentioned at least one technical solution adopted in the embodiments of this specification include at least the following: when the emulsion pump is transported, the venting groove is sealed by the protrusion of the piston rod, which can prevent the emulsion in the bottle from entering the pump body through the venting hole and the venting groove, thereby preventing the piston rod and the cap from bringing out some emulsion and causing contamination when they are opened, and automatically unlocking the venting groove when the cap and the piston rod are raised and opened, without affecting subsequent use. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a sectional view in this application;

[0016] Figure 2 It is in this application Figure 1 Enlarged view of section A in the middle;

[0017] Figure 3 This is a perspective view of the connector in this application;

[0018] Figure 4 This is a sectional view of the connector in this application;

[0019] Figure 5 This is a perspective view of the pump body in this application;

[0020] Figure 6 This is a sectional view of the pump body in this application;

[0021] Figure 7 This is a perspective view of the piston rod in this application.

[0022] The component names corresponding to the various reference numerals in the figure are as follows: 1. Shoulder sleeve; 2. Pump body; 201. Vent hole; 202. First mounting seat; 203. Snap-in rib; 204. Second mounting seat; 205. Flange; 3. Connector; 301. Vent groove; 302. Connecting part; 303. Stop rib; 304. Snap-in groove; 305. Internal thread; 4. Piston rod; 401. Protrusion; 5. Head cap; 501. External thread; 6. Spring seat; 7. Return spring; 8. Piston; 9. Gasket; 10. Sealing ball valve. Detailed Implementation

[0023] The embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0024] The following specific examples illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. This application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this application. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0025] It should be noted that various aspects of embodiments within the scope of the appended claims are described below. It will be apparent that the aspects described herein can be embodied in a wide variety of forms, and any particular structure and / or function described herein is merely illustrative. Based on this application, those skilled in the art will understand that one aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspects set forth herein can be used to implement the device and / or practice the method. Additionally, this device and / or method can be implemented using structures and / or functionalities other than one or more of the aspects set forth herein.

[0026] It should also be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this application. The illustrations only show the components related to this application and are not drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0027] Additionally, specific details are provided in the following description to facilitate a thorough understanding of the examples. However, those skilled in the art will understand that practice can be carried out without these specific details.

[0028] Combination Figures 1-7 As shown, this application provides a leak-proof emulsion pump, including a shoulder sleeve 1 and a pump body 2 installed inside an external bottle via the shoulder sleeve 1. The outside of the pump body 2 is in contact with the emulsion inside the bottle. A connector 3 is inserted into the end of the pump body 2. The connector 3 is a hollow part with a vent groove 301 on one side. A vent hole 201 is provided through the pump body 2 and communicates with the vent groove 301. In this embodiment, the vent groove 301 is horizontally arranged. A piston rod 4 is installed inside the pump body 2, and a protrusion is provided around the piston rod 4. In the packaging and transportation state of the emulsion pump, the protrusion 401 is sealed and fitted to the inner wall of the connector 3, sealing the vent groove 301. At this time, the emulsion in the bottle cannot enter the pump body 2 through the vent hole 201 and the vent groove 301. The upper end of the piston rod 4 passes through the connector 3. When the pump body 2 is opened, the piston rod 4 moves upward, causing the protrusion 401 to disengage from the vent groove 301. At this time, the vent hole 201 connects to the inside of the pump body 2 through the vent groove 301, so that the pump body 2 can be kept ventilated during subsequent use.

[0029] In some embodiments, such as Figures 2-6As shown, the pump body 2 is provided with a first mounting base 202, and a vent 201 is located on one side of the first mounting base 202. The bottom of the connector 3 is provided with a connecting part 302, which is inserted into the first mounting base 202. The vent groove 301 is provided through one side of the connecting part 302, and the protrusion 401 is sealed and fitted to the inner wall of the connecting part 302. The surface of the connecting part 302 is provided with stop ribs 303 at equal intervals. The stop ribs 303 abut against the inner wall of the first mounting base 202, so that the connector 3 is axially fixed after being installed in the pump body 2. The end of the pump body 2 is provided with at least one locking rib 203, and the connector 3 is provided with a locking groove 304 corresponding to the locking rib 203, so that the connector 3 is vertically fixed after assembly. The piston rod 4 is fixed at the top. In this embodiment, the upper end of the piston rod 4 is connected to a cap 5. The bottom of the cap 5 is provided with an external thread 501. The connector 3 is provided with an internal thread 305 that mates with the external thread 501. When using the emulsion pump, the threads on the cap 5 and the connector 3 need to be unscrewed. At this time, the piston rod 4 can rise. The bottom of the piston rod 4 is inserted and connected to a spring seat 6. The pump body 2 is provided with a second mounting seat 204. The bottom of the spring seat 6 is placed on the second mounting seat 204. A reset spring 7 is installed in the pump body 2. The bottom of the spring seat 6 is hollow. The reset spring 7 abuts against the bottom of the spring seat 6. After the cap 5 is unscrewed, the reset spring 7 will push the piston rod 4 through the spring seat 6, causing its protrusion 401 to disengage from the vent groove 301 to unlock.

[0030] In some embodiments, such as Figures 5-7 As shown, a piston 8 is mounted on the spring seat 6, and the piston 8 abuts against the bottom of the piston rod 4. The piston 8 moves up and down with the spring seat 6 and the piston rod 4. The pump body 2 is provided with a flange 205, which fits against the bottom of the shoulder sleeve 1. A gasket 9 is provided at the bottom of the flange 205. The pump body 2 is installed between the shoulder sleeve 1 and the outer bottle body by the cooperation of the gasket 9 and the flange 205. In this embodiment, a sealing ball valve 10 is installed in both the piston rod 4 and the pump body 2 to achieve a one-way sealing function.

[0031] In this specification, the same or similar parts between the various embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. In particular, the descriptions of the embodiments described later are relatively simple, and relevant parts can be referred to the descriptions of the foregoing embodiments.

[0032] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A leak-proof emulsion pump, comprising a shoulder sleeve (1) and a pump body (2) mounted on an external bottle via the shoulder sleeve (1), characterized in that: A connector (3) is inserted into the end of the pump body (2). The connector (3) is a hollow part and has a vent groove (301) on one side. A vent hole (201) is provided through the pump body (2). The vent hole (201) is connected to the vent groove (301). A piston rod (4) is installed inside the pump body (2). A protrusion (401) is provided around the piston rod (4). The protrusion (401) is sealed and fitted to the inner wall of the connector (3) to seal the vent groove (301). The upper end of the piston rod (4) passes through the connector (3). When the pump body (2) is opened, the piston rod (4) moves upward, causing the protrusion (401) to disengage from the vent groove (301). At this time, the vent hole (201) is connected to the inside of the pump body (2).

2. The emulsion pump for preventing leakage according to claim 1, characterized in that, The pump body (2) is provided with a first mounting base (202), the vent (201) is located on one side of the first mounting base (202), and the bottom of the connector (3) is provided with a connecting part (302), which is inserted into the first mounting base (202).

3. The emulsion pump for preventing leakage according to claim 2, characterized in that, The ventilation groove (301) is disposed through one side of the connecting part (302), the protrusion (401) is sealed and attached to the inner wall of the connecting part (302), and the surface of the connecting part (302) is provided with stop ribs (303) at equal intervals, and the stop ribs (303) abut against the inner wall of the first mounting base (202).

4. The emulsion pump for preventing leakage according to claim 1, characterized in that, The pump body (2) is provided with at least one snap-fit ​​rib (203) at its end, and the connector (3) is provided with a snap-fit ​​groove (304) corresponding to the snap-fit ​​rib (203).

5. The emulsion pump for preventing leakage according to claim 1, characterized in that, The piston rod (4) is connected to a cap (5) at its upper end. The cap (5) has an external thread (501) at its bottom and an internal thread (305) on the connector (3) that mates with the external thread (501).

6. The emulsion pump for preventing leakage according to claim 1, characterized in that, A spring seat (6) is inserted and connected to the bottom of the piston rod (4), and a second mounting seat (204) is provided inside the pump body (2). The bottom of the spring seat (6) is placed on the second mounting seat (204).

7. The emulsion pump for preventing leakage according to claim 6, characterized in that, A reset spring (7) is installed inside the pump body (2). The bottom of the spring seat (6) is hollow, and the reset spring (7) abuts against the bottom of the spring seat (6).

8. The emulsion pump for preventing leakage according to claim 6, characterized in that, A piston (8) is fitted onto the spring seat (6), and the piston (8) abuts against the bottom of the piston rod (4).

9. The emulsion pump for preventing leakage according to claim 1, characterized in that, The pump body (2) is provided with a flange (205), which is attached to the bottom of the shoulder sleeve (1), and a gasket (9) is provided at the bottom of the flange (205).

10. The emulsion pump for preventing leakage according to claim 1, characterized in that, Both the piston rod (4) and the pump body (2) are equipped with sealing ball valves (10).

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