A sealed emulsion pump for easy assembly

Abstract

The application provides a sealed emulsion pump convenient to assemble, which comprises a shoulder sleeve and a pump body. An end of the pump body is provided with a connecting piece. The connecting piece is provided with a gas permeation groove on one side. The pump body is provided with at least one gas permeation hole. The pump body is provided with a piston rod and a head cap sleeved on the top of the piston rod. The piston rod and the head cap pass through the connecting piece. A first sealing part at the bottom of the head cap is sealingly attached to one side of the gas permeation groove. The diameter of the piston rod is smaller than that of the first sealing part, so that a gap exists between the piston rod and the gas permeation groove. A flow cavity is formed between the pump body and the connecting piece. The bottom of the connecting piece is provided with a second sealing part. The sealed emulsion pump convenient to assemble provided by the application can realize the gas permeation of the pump body and the outside without aligning the gas permeation groove and the gas permeation hole during assembly, thereby improving the assembly efficiency. When the emulsion pump is transported, the gas permeation groove is sealed by the first sealing part and the second sealing part, thereby preventing the piston rod and the head cap from bringing out part of the emulsion when being opened and causing pollution.

Description

Technical Field

[0001] This application relates to the field of emulsion pump technology, and more specifically to a sealed emulsion pump that is easy to assemble. 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 body is opened for the first time, the emulsion will be carried out of the bottle body along with the piston, resulting in contamination and inconvenience. In addition, the emulsion pump requires the vent to be connected to the air inlet control chamber during assembly, which affects the assembly efficiency. Summary of the Invention

[0003] (a) Technical problems to be solved

[0004] The problem to be solved by this application is to provide a sealed emulsion pump that is easy to assemble, which can overcome the defects of the prior art.

[0005] (II) Technical Solution

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

[0007] This specification provides an easy-to-assemble sealed emulsion pump, including a shoulder sleeve and a pump body installed in an external bottle body through the shoulder sleeve. A connector is inserted into the end of the pump body. The connector is a hollow part with a vent groove on one side. The pump body has at least one through-hole. The pump body has a piston rod and a cap fitted on the top of the piston rod. The piston rod and the cap pass through the connector. A first sealing part at the bottom of the cap is sealed and fitted to one side of the vent groove. The diameter of the piston rod is smaller than the first sealing part, so there is a gap between the piston rod and the vent groove. When the piston rod rises, the gap communicates with the vent groove. A flow cavity is formed between the pump body and the connector. The flow cavity communicates the vent groove and the vent hole. A second sealing part is provided at the bottom of the connector. The second sealing part is sealed and fitted to the inner wall of the pump body below the vent hole.

[0008] In some embodiments, the pump body is provided with three vent holes at equal intervals around it, the pump body is provided with a first mounting seat, the vent holes pass through the first mounting seat, the bottom of the connector is provided with a connecting part, the connecting part is inserted into the first mounting seat, the vent groove is provided through one side of the connecting part, the surface of the connecting part is provided with first stop ribs at equal intervals, the inner wall of the first mounting seat is provided with corresponding second stop ribs, and the flow cavity is formed between the connecting part and the first mounting seat.

[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 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, the return spring abuts against the bottom of the spring seat, a piston is fitted on the spring seat, and the piston abuts against the bottom of the piston rod.

[0011] In some embodiments, the pump body is provided with a flange that fits against the bottom of the shoulder sleeve, and a gasket is provided at the bottom of the flange.

[0012] (III) Beneficial Effects

[0013] Compared with the prior art, the beneficial effects that the above-mentioned at least one technical solution adopted in the embodiments of this specification can achieve include at least the following: the pump body can be ventilated to the outside without aligning the vent groove and the vent hole during assembly, thereby improving assembly efficiency; the emulsion pump can be transported by sealing the vent groove through the first sealing part and the second sealing part, which can prevent the emulsion in the bottle from entering the pump body through the vent hole and the vent groove, thereby preventing the piston rod and the cap from bringing out some emulsion and causing contamination when they are opened; and the vent groove is automatically unlocked 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 from 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 pump body in this application;

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

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

[0020] Figure 6 This is a cross-sectional view of the connector in this application.

[0021] 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 base; 203. Second stop rib; 204. Snap-in rib; 205. Second mounting base; 206. Flange; 3. Connector; 301. Vent groove; 302. Second sealing part; 303. Connecting part; 304. First stop rib; 305. Snap-in groove; 306. Internal thread; 4. Piston rod; 401. Clearance; 5. Head cap; 501. First sealing part; 502. External thread; 6. Flow chamber; 7. Spring seat; 8. Return spring; 9. Piston; 10. Gasket. Detailed Implementation

[0022] The embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0023] 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.

[0024] 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.

[0025] 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.

[0026] 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.

[0027] Combination Figures 1-6As shown, this application provides a sealed emulsion pump that is easy to assemble, including a shoulder sleeve 1 and a pump body 2 installed in an external bottle through the shoulder sleeve 1. 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. The pump body 2 has at least one through vent hole 201. Specifically, the pump body 2 has three vent holes 201 arranged at equal intervals around it. The pump body 2 has a piston rod 4 and a cap 5 fitted on the top of the piston rod 4. The piston rod 4 and the cap 5 pass through the connector 3. The first sealing part 501 at the bottom of the cap 5 seals against one side of the vent groove 301, sealing the inner side of the vent groove 301. The diameter of the piston rod 4 is smaller than that of the first sealing part 501, so there is a gap between the piston rod 4 and the vent groove 301. When the head cap 5 is opened, the piston rod 4 rises. At this time, the gap 401 is connected to the vent groove 301, so that the inside of the pump body 2 is connected to the vent groove 301. At the same time, a flow cavity 6 is formed between the pump body 2 and the connecting part 3. The flow cavity 6 connects the vent groove 301 and the vent hole 201. The bottom of the connecting part 3 is provided with a second sealing part 302. The second sealing part 302 is sealed and fitted to the inner wall of the pump body 2 below the vent hole 201, sealing the outside of the vent groove 301. This allows external air to be connected to the pump body 2 through the vent hole 201 and the vent groove 301. Since the flow cavity 6 is formed between the connecting part 3 and the pump body 2, and the pump body 2 is provided with multiple vent holes 201, it is not necessary to align the vent holes 201 with the vent groove 301 during assembly.

[0028] In some embodiments, such as Figures 3-6As shown, the pump body 2 is provided with a first mounting base 202, and a vent hole 201 passes through the first mounting base 202. The bottom of the connector 3 is provided with a connecting part 303, which is inserted into the first mounting base 202. A vent groove 301 is provided through one side of the connecting part 303. The surface of the connecting part 303 is provided with first stop ribs 304 at equal intervals, and the inner wall of the first mounting base 202 is provided with corresponding second stop ribs 203, so that the connector 3 remains axially fixed after being installed in the pump body 2. In this embodiment, a flow cavity 6 is formed between the connecting part 303 and the first mounting base 202. The end of the pump body 2 is provided with at least one snap-fit ​​rib 204, and the connector 3 is provided with a snap-fit ​​groove 305 corresponding to the snap-fit ​​rib 204, so that the upper and lower ends of the connector 3 remain fixed after assembly. The bottom of the cap 5 is provided with an external thread 502, and the connector 3 is provided with an internal thread that mates with the external thread 502. The thread 306 requires unscrewing the threads on the cap 5 and connector 3 when using the emulsion pump, allowing the piston rod 4 to rise. A spring seat 7 is inserted into the bottom of the piston rod 4. A second mounting seat 205 is provided inside the pump body 2, and the bottom of the spring seat 7 is placed on the second mounting seat 205. A return spring 8 is installed inside the pump body 2. The bottom of the spring seat 7 is hollow, and the return spring 8 rests against the bottom of the spring seat 7. A piston 9 is fitted on the spring seat 7, and the piston 9 rests against the bottom of the piston rod 4. After the cap 5 is unscrewed, the return spring 8 will push the piston rod 4 through the spring seat 7, causing its first sealing part 501 to disengage from the vent groove 301 to unlock. In this embodiment, the pump body 2 is provided with a flange 206, which fits against the bottom of the shoulder sleeve 1. A gasket 10 is provided at the bottom of the flange 206. The pump body 2 is installed between the shoulder sleeve 1 and the outer bottle body by the cooperation of the gasket 10 and the flange 206.

[0029] 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.

[0030] 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 sealable emulsion pump for easy assembly, comprising a shoulder sleeve (1) and a pump body (2) mounted on an external bottle via said shoulder sleeve (1), characterized in that: A connector (3) is inserted into the end of the pump body (2). The connector (3) is hollow and has a vent groove (301) on one side. The pump body (2) has at least one through vent hole (201). The pump body (2) contains a piston rod (4) and a cap (5) fitted on the top of the piston rod (4). The piston rod (4) and the cap (5) pass through the connector (3). The first sealing part (501) at the bottom of the cap (5) is sealed and fitted to one side of the vent groove (301). The diameter of the piston rod (4) is smaller than that of the first sealing part (201). A gap (401) exists between the sealing part (501) and the vent groove (301). When the piston rod (4) rises, the gap (401) communicates with the vent groove (301). A flow cavity (6) is formed between the pump body (2) and the connector (3). The flow cavity (6) communicates with the vent groove (301) and the vent hole (201). A second sealing part (302) is provided at the bottom of the connector (3). The second sealing part (302) is sealed and fitted to the inner wall of the pump body (2) below the vent hole (201).

2. The easily assembled sealed emulsion pump according to claim 1, characterized in that, The pump body (2) is provided with three vent holes (201) at equal intervals around it.

3. The easily assembled sealed emulsion pump according to claim 1, characterized in that, The pump body (2) is provided with a first mounting base (202), the vent hole (201) passes through the first mounting base (202), and the bottom of the connector (3) is provided with a connecting part (303), which is inserted into the first mounting base (202).

4. The easily assembled sealed emulsion pump according to claim 3, characterized in that, The ventilation groove (301) is disposed through one side of the connecting part (303). The surface of the connecting part (303) is provided with first stop ribs (304) at equal intervals. The inner wall of the first mounting base (202) is provided with second stop ribs (203). The flow cavity (6) is formed between the connecting part (303) and the first mounting base (202).

5. The easily assembled sealed emulsion pump according to claim 1, characterized in that, The pump body (2) is provided with at least one snap-fit ​​rib (204) at its end, and the connector (3) is provided with a snap-fit ​​groove (305) corresponding to the snap-fit ​​rib (204).

6. The easily assembled sealed emulsion pump according to claim 1, characterized in that, The cap (5) has an external thread (502) at its bottom, and the connector (3) has an internal thread (306) that mates with the external thread (502).

7. The easily assembled sealed emulsion pump according to claim 1, characterized in that, A spring seat (7) is inserted and connected to the bottom of the piston rod (4), and a second mounting seat (205) is provided inside the pump body (2). The bottom of the spring seat (7) is placed on the second mounting seat (205).

8. The easily assembled sealed emulsion pump according to claim 7, characterized in that, A reset spring (8) is installed inside the pump body (2). The bottom of the spring seat (7) is hollow. The reset spring (8) abuts against the bottom of the spring seat (7). A piston (9) is fitted on the spring seat (7). The piston (9) abuts against the bottom of the piston rod (4).

9. The easily assembled sealed emulsion pump according to claim 1, characterized in that, The pump body (2) is provided with a flange (206), which is attached to the bottom of the shoulder sleeve (1), and a gasket (10) is provided at the bottom of the flange (206).

Images